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Saha, Gopesh Chandra. "Mapping of foliar disease resistance genes and genes for agro-morphological traits in Lens culinaris Medik." Pullman, Wash. : Washington State University, 2009. http://www.dissertations.wsu.edu/Dissertations/Fall2009/g_saha_112409.pdf.
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Koul, Anju L. "Developmental aspects of phenolic compounds in lentils." Thesis, University of Ottawa (Canada), 1987. http://hdl.handle.net/10393/22412.
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Hanson, Matthew G. "The effect of lentils (Lens culinaris) on hypertension and hypertension–associated vascular remodeling in the spontaneously hypertensive rat." Cambridge University Press, 2013. http://hdl.handle.net/1993/22140.
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Consumption of pulse crops has been linked to improvements in blood vessel function, but which pulse variety/type is better and how they work remains unknown. Two distinct studies were conducted to address these questions.
In study 1, spontaneously hypertensive rats (SHR) were fed control diet, or diets containing 30% (w/w) beans, peas, lentils, chickpeas, or mixed pulses. Normotensive Wistar-Kyoto (WKY) rats were fed the control diet. The lentil–containing diet significantly attenuated the rise in BP (+8 and +31 mmHg, vs. control) and reduced large artery remodeling compared to control. In study 2, SHR were fed control, mixed lentil, green lentil, or red lentil diets for 8 weeks. WKY were fed control or mixed lentil diets. Green lentils decreased arterial remodeling and improved arterial compliance in the SHR.
A diet high in green lentils could be a valuable adjunct to allopathic medicine to mitigate effects of hypertension on the vasculature.October 2013
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Potts, Leah K. "Of lentils and llamas and other stories from the Palouse." Theological Research Exchange Network (TREN), 1997. http://www.tren.com.
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Sheung-kei, Winnie S. "Cooking quality: physical and biochemical properties of lentils (Lens culinaris)." Thesis, Curtin University, 2000. http://hdl.handle.net/20.500.11937/2528.
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Lentils, one of the cool-season pulses, are consumed as a staple food in most developing countries. The demand for pulses in western societies is increasing because of its valuable nutritional quality and an increased awareness of health issues. Australia has a good reputation for producing clean low moisture legume products and could increase as market share of lentil production by identifying, developing and promoting good quality varieties.Lentils which are graded as good quality varieties must have a short and uniform cooking time, without 'hard to cook' seed, have the hull stay attached to the seed during cooking, and have a final acceptable taste, texture, flavour and appearance after cooking (Bhatty 1990). Cooking quality in this study is defined as the maximum force (N) that is required to compress the whole seed cooked product after cooking for a standard period of time. This study aims to develop an objective measurement to determine the cooking quality of lentils and thereby evaluates the relationships between lentil cooking quality and some of its physical and biochemical properties. Four cultivars used (Cassab, Digger, ILL 7180 and Matilda) were grown during 1999 at Mullewa and Pingaring, Western Australia. The relationship between the cooking quality of lentil and water absorption, seed size, seed coat thickness, phytic acid, mineral composition and initial moisture content was investigated.Texture measurement was carried out using the TA.XT2i meter as an alternative to the subjective method "Cooking time test". By comparing the cooking time determined by 'Cooking time test, 220 N was established and suggested as an optimal peak compression force to determine the adequate cooking time for lentils. Both methods showed that 35 minutes cooking time was adequate for red lentils (Cassab, Digger, and ILL 7180), and 45 minutes for green lentils (Matilda).Cooking significantly reduced the hardness of the seeds (R= - 0.752 to - 0.89) and promoted mineral leaching (P < 0.05). The interaction between environment and genotype had a significant effect on seed size, seed coat thickness, mineral composition (Phytic acid, Ne, K+, Mg2+, Ca2+ M+, Fe2+ and CU2+) and hardness (P< 0.05). Seed coat thickness did not correlated with this rate of water uptake and cooking quality. Growing environments had a greater influence on the cooking quality than genotypes. Lentils grown at Pingaring are generally had a higher in Phyti acid content, better mineral retention and were harder in texture than those grown at Mullewa.The results of this study implicated that the peak compression force (220 N) was identified as an indicator to determine the cooking time of lentil cultivars. Texture Profile Analysis (TPA) is a useful method to evaluate various texture characteristics (hardness, cohesiveness, chewiness, springiness, gumminess and adhesiveness) of lentil cultivars. Cooking quality of lentil is significantly affected by the effect of varieties and growing locations. However, not the various biochemical compositions (phytic acid and minerals) and the thickness of seed coat have no significant effect on the cooking quality of lentil.
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Sheung-kei, Winnie S. "Cooking quality: physical and biochemical properties of lentils (Lens culinaris)." Curtin University of Technology, School of Public Health, 2000. http://espace.library.curtin.edu.au:80/R/?func=dbin-jump-full&object_id=10354.
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Lentils, one of the cool-season pulses, are consumed as a staple food in most developing countries. The demand for pulses in western societies is increasing because of its valuable nutritional quality and an increased awareness of health issues. Australia has a good reputation for producing clean low moisture legume products and could increase as market share of lentil production by identifying, developing and promoting good quality varieties.Lentils which are graded as good quality varieties must have a short and uniform cooking time, without 'hard to cook' seed, have the hull stay attached to the seed during cooking, and have a final acceptable taste, texture, flavour and appearance after cooking (Bhatty 1990). Cooking quality in this study is defined as the maximum force (N) that is required to compress the whole seed cooked product after cooking for a standard period of time. This study aims to develop an objective measurement to determine the cooking quality of lentils and thereby evaluates the relationships between lentil cooking quality and some of its physical and biochemical properties. Four cultivars used (Cassab, Digger, ILL 7180 and Matilda) were grown during 1999 at Mullewa and Pingaring, Western Australia. The relationship between the cooking quality of lentil and water absorption, seed size, seed coat thickness, phytic acid, mineral composition and initial moisture content was investigated.Texture measurement was carried out using the TA.XT2i meter as an alternative to the subjective method "Cooking time test". By comparing the cooking time determined by 'Cooking time test, 220 N was established and suggested as an optimal peak compression force to determine the adequate cooking time for lentils. Both methods showed that 35 minutes cooking time was adequate for red lentils (Cassab, Digger, and ILL 7180), and 45 minutes for green lentils ++(Matilda).Cooking significantly reduced the hardness of the seeds (R= - 0.752 to - 0.89) and promoted mineral leaching (P < 0.05). The interaction between environment and genotype had a significant effect on seed size, seed coat thickness, mineral composition (Phytic acid, Ne, K+, Mg2+, Ca2+ M+, Fe2+ and CU2+) and hardness (P< 0.05). Seed coat thickness did not correlated with this rate of water uptake and cooking quality. Growing environments had a greater influence on the cooking quality than genotypes. Lentils grown at Pingaring are generally had a higher in Phyti acid content, better mineral retention and were harder in texture than those grown at Mullewa.The results of this study implicated that the peak compression force (220 N) was identified as an indicator to determine the cooking time of lentil cultivars. Texture Profile Analysis (TPA) is a useful method to evaluate various texture characteristics (hardness, cohesiveness, chewiness, springiness, gumminess and adhesiveness) of lentil cultivars. Cooking quality of lentil is significantly affected by the effect of varieties and growing locations. However, not the various biochemical compositions (phytic acid and minerals) and the thickness of seed coat have no significant effect on the cooking quality of lentil.
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Rabah, Nasser Rima. "Physiological aspects of the response to elevated CO₂ in lentils (Lens culinaris Medic)." Thesis, University of Plymouth, 2009. http://hdl.handle.net/10026.1/253.
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This study examined the effects of elevated CO2 and its interaction with drought and nitrogen fertilizer on the growth, production and nodulation of the leguminous crop lentil (Lens culinaris Medic) cultivars ILL7979 and ILL6994 (Idlib 3). Plants were grown under ambient and elevated CO2 at full and limited irrigation conditions in both open top chambers, which were later proven to be unreliable because of CO2 leakage, and tightly sealed and ventilated chambers which were reliable. Destructive harvests at anthesis and at maturity were conducted and results from sealed chambers at maturity showed that above ground dry weight was increased by an average of 12% under elevated CO2, but this increase was not statistically significant.
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Ruiz, Raquel Gema. "A study of saponins in legumes of importance to both human and animal nutrition." Thesis, Open University, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.307783.
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Rashid, Md Harun-or [Verfasser], and Michael [Akademischer Betreuer] Wink. "Genetic diversity of rhizobia nodulating lentils (Lens culinaris Medik.) / Md. Harun-or Rashid ; Betreuer: Michael Wink." Heidelberg : Universitätsbibliothek Heidelberg, 2013. http://d-nb.info/117724926X/34.
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Dürr, Julia. "Folate, choline, betaine, resistant starch & dietary fiber in Swedish lentils : Effect of cultivar and growing conditions." Thesis, Linnéuniversitetet, Institutionen för kemi och biomedicin (KOB), 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-96847.
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Background: One key component in the development of sustainable farming and foodstuffs is to increase the cultivation of legumes, due to their environmental and health benefits. Legumes contain several essential vitamins and minerals, protein and fiber, but cultivation can be problematic due to their weak stem strength which results in loss of crops as a result of crop lodging and susceptibility to weed invasion. One possible solution is co-cultivation with cereal crops such as oats as they provide support and outcompete weed growth, however, it is still unknown if co-cultivation will affect the nutrient content of lentils. Aim: The thesis has two aims: first, to compare choline, betaine, folate, resistant starch and dietary fiber content in two different types of lentils: Gotland lentils and Anicia lentils; and second to examine if cocultivation with oats will affect the nutrient content of the two lentil types. Methods: Betaine and choline were analyzed through high pressure liquid chromatography-mass spectrometry (HPLC-MS) and folate through high pressure liquid chromatography with fluorometric/UV detection (HPLC-FL/UV). Resistant starch, non-resistant starch and dietary fiber were analyzed according to enzymatic assay kits by Megazyme. Results: Significant differences in nutrient content between Anicia and Gotland lentils were seen regarding resistant starch content, with Gotland showing a 50 % higher content. A significantly greater choline content was found in Anicia lentil samples that were co-cultivated with oats, showing approx. a 15 % higher choline content. Gotland lentils co-cultivated with oats showed a significantly greater choline, resistant starch and dietary fiber content by 15 %, 70 % and 10 %, respectively. Conclusions: There was no reported significant difference in choline, betaine, folate and dietary fiber content, but in resistant starch between the two lentil types, with Gotland lentil showing a higher resistant starch content. There appeared to be a positive effect of co-cultivation with oats since a significantly higher choline content in both lentil types co-cultivated with oats and a significant increase resistant starch and dietary fiber in Gotland lentils co-cultivated with oats was reported. This suggests that cocultivation can lead to an increase in nutritional content for some nutrients in Gotland and Anicia lentils. The dietary fiber analysis confirmed that legumes are a great source of fiber by one portion providing approx. half the recommended daily amount. Cultivation and consumption of lentils can give both environmental and health benefits. Further studies are needed to explore other pulses and effect on other nutrients.Svenska ekologiska linser
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Glushko, Anna. "The Challenge of Sorting Lentils from the Ashes in Employee Selection| Overt Integrity Testing and Organizational Attitudes." Thesis, Southern Illinois University at Edwardsville, 2017. http://pqdtopen.proquest.com/#viewpdf?dispub=10273876.
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Research suggests that integrity is crucial to numerous aspects of the workplace. It plays a major role in influencing employee organizational attitudes and consequent behaviors, and as a result many companies implement integrity testing in their selection practices (Van Iddekinge et al., 2012). However, few researchers have examined the relationship between using integrity testing for selection and resulting applicants’ attitudes. This study explored applicants’ reactions to overt integrity testing. A combination of correlational and mediational analyses were applied. Results from 422 participants who completed Substance abuse, Production loss, and Interpersonal Problems (SPI) Inventory Integrity Survey revealed that perceived procedural justice negatively correlated with perceived privacy invasion and perceived job relevance and positively correlated with outcome favorability (being informed of passing the overt integrity test) and organizational attraction. Contrary to study’s expectations, no statistically significant correlation was found between perceived procedural justice and privacy concern, and there was a negative significant correlation between perceived procedural justice and perceived job relevance, the relationship between outcome favorability and perceived procedural justice was not mediated by perceived test relevance. This study provides relevant meaningful contributions to research literature in the fields of Industrial-Organizational Psychology, Human Relations, Management, and Business.
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VILA, DONAT MARIA DEL PILAR. "Valorization of legumes, important constituents of the Mediterranean Diet, with specific attention to lentils and their nutraceutical effects." Doctoral thesis, Università degli Studi di Camerino, 2015. http://hdl.handle.net/11581/401721.
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The current thesis has been developed and realized at the University of Camerino, School of Pharmacy in the Food Chemistry laboratories during my Ph.D course. This thesis provides a comprehensive assessment of the state of chemistry, nutrition and beneficial aspects of legumes, mainly lentils, which are an important food from a nutritional point of view. Whereupon, my research has been divided mainly into three parts. First of all, great attention was focused on the development of analytical instrumental methods for the analysis of important bioactive constituents in legumes, especially in lentils, such as soyasaponins and isoflavones, as well as, the fatty acid composition. The second part of this thesis was developed at the University of Valencia, Faculty of Pharmacy in the Toxicology laboratory. In this joint project, antioxidant properties of soyasaponins and lentil extracts were tested in ''in vitro'' cells to determine the cytoprotective action against mycotoxins such as Alternariol. Finally, the third part of the thesis, was focused on the ''in vivo'' study, in collaboration with Pharmacology research group of the University of Camerino, to test hypocholesterolemic action of lentil extracts rich in soyasaponins. Regarding bioactive constituents present in lentils, great attention was focused on soyasaponins that demonstrated to have health-promoting properties including plasma cholesterol-lowering, anti-carcinogenic, antioxidant and hepato-protective. In the first part of my thesis, an innovative and fast analytical method for the quantification of soyasaponins I and βg in lentils was developed. Samples were extracted using 70 % aqueous ethanol at room temperature and then injected into a high-performance liquid chromatography-tandem mass spectrometry system. The correlation coefficients of calibration curves of the analyzed compounds were ≥ 0.9997. The recoveries obtained by spiking the lentil samples with a standard mixture of soyasaponins I and βg at 50 and 100 mg l-1 were in the range of 96 - 101 and 98 - 103 %, respectively. The validated method was applied to the analysis of 30 lentil samples from central Italy. Soyasaponins I and βg were present in these lentils in concentrations that ranged from 54 to 226 mg kg-1 and from 436 to 1272 mg kg-1, respectively. Our data indicated that lentils cultivated in fields at intermediate altitudes (1142 - 1387 m) showed the highest levels of soyasaponins, a result confirmed by principal component analysis. Successively, a new analytical method for determining five isoflavone compounds, three of which are aglycons, namely daidzein, genistein, biochanin A, and two of which, daidzin and genistin, are glycosilated, in lentils and other legumes, by using an effective clean-up system and HPLC-MS/MS (triple quadrupole) method was developed. The recoveries obtained by spiking the lentil samples with a standard mixture of isoflavones at three levels of fortification (5, 25 and 100 μg kg-1) were in the range of 54.4 - 111.1 %, 68.6 - 91.1 %, and 84.4 - 114 %, respectively. The method was then applied to analyse 48 lentil samples from central Italy and other legumes for determining the isoflavone content which in lentils ranged from 1.1 to 95.6 μg kg-1, while chickpeas sample showed the highest isoflavone content (913.8 μg kg-1). After that, the fatty acid composition of 29 legumes (mostly lentils) after the optimization of the extraction method, was studied. The Folch method and liquid-solid extraction with hexane/isopropanol or with hexane/acetone were investigated, as was the effect of previous hydration of samples. Soxhlet extractions were also evaluated with different solvent mixtures. Results on fatty acids composition obtained using the hexane/isopropanol extraction method were the same in terms of fatty acids composition of the Folch method, but the extraction yield was only around 20 - 40 % of that of the Folch method preceded by hydration. Some types of legumes showed particularly interesting values for the ratio of polyunsaturated fatty acids n-6/n-3, in particular lentils, with the value of 4.0, in which PUFAs ranged from 42.0 to 57.4 %. Concerning the second part of my work, the cytotoxicity of Alternariol (AOH), soyasaponin I (SS I) and soyasaponins-rich extract from lentils was investigated, as well as, the cytoprotective effects of SS I and lentil extracts against AOH induced-cytotoxicity on Caco-2 cells. AOH is a mycotoxin produced by Alternaria spp. that has been found in vegetables such as lentils. Cytotoxic and genotoxic effects of AOH have been demonstrated previously in vitro. In our study, cytotoxicity was carried out using MTT and PC assays (AOH: 3.125 - 100 μM, SS I: 3.125 - 50 μM, and lentil extracts: 1:0 - 1:32) during 24 h of exposure in Caco-2 cells. Only AOH showed cytotoxic effect. The reduction in cell proliferation ranged from 25 % to 47 %, while simultaneous combination of SS I with AOH (1:1) increased cell proliferation (35 %) compared to AOH tested alone. Then SS I and lentil extracts showed synergistic cytoprotective effects against cytotoxicity induced by AOH on Caco-2 cells. Thus food commodities, such as lentils, containing soyasaponins could contribute to diminish the toxicological risk that natural contaminant as AOH, can produce to humans. For what concern the third part of my work, an ''in vivo'' study was realized to test the hypocholesterolemic activity of a lentil extract. However, this part of the thesis concerning the ''in vivo'' study are the basis of Patent Application, and no more details can be provided.
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Sampathkumar, Yamuna. "Thermal processing effects on total phenolic content, antioxidant activity, trypsin inhibitor activity and in-vitro protein digestibility of lentils." Thesis, McGill University, 2012. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=107918.
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Heat pre-treatment of nutrient-rich lentil seeds prior to their processing into flour may enhance its use by reducing processing and preparation times in value added products. In this study, changes in trypsin inhibitor content, total phenolic content, antioxidant activity, and in-vitro protein digestibility of flours prepared from hulled red lentils and unhulled green lentils were determined subsequent to various processing methods such as oven roasting (OR), boiling and microwave heating (MH). The increasing interest in the phenolic content of plant based food-stuffs made us to assess two different lentil cultivars processed under fixed temperature and time combination. Total phenolic content and antioxidant activity (TAC) of 70% acetone lentil extracts were assayed spectrophotometrically at 760nm using Folin-Ciocalteu and DPPH (1,1-diphenyl-2-picrylhydrazyl) radical scavenging activity methods, respectively. Significant differences in phenolic content and antioxidant activity were noted between hulled red and unhulled green lentil varieties. MH (5 min) led to a significant increase (P ≤ 0.05) in total phenolic content in unhulled green lentil flours (GLF) [8.85 mg GAE/g dry weight (DW) while raw flour comparatively showed lower phenolic content [7.5 mg GAE/g DW]. A similar increase was found after oven-roasting this material for 20 min. The TAC of untreated unhulled green lentil range was around 86%, and it was higher than the value obtained for the flour from untreated hulled red lentils. The increase in TPC of OR samples and microwave-heated samples over untreated ones may reflect reductions in TAC. Flour samples obtained from boiled lentils showed a sharp decrease in TPC and TAC values, which may be attributable to a number of factors in the matrix.Though lentils are rich in protein, their anti-nutritional components, the length of the time required for their preparation, as well as their unfavorable flavor, and reduced protein digestibility have limited their frequency of use for human consumption. By applying heat, anti-nutritional factors such as trypsin inhibitors can be largely removed. Our results show that MH treatment produced significant reduction (P≤0.05) in trypsin inhibitor activity when compared to OR or boiling methods. In- vitro protein digestibility (IVPD) was improved after processing. Longer processing times associated with OR or boiling methods improved IVPD to a greater extent than MH.Keywords: TAC- Total antioxidant activity; GA- Gallic Acid equivalent; Lentils; TPC- Total phenolic content; IVPD- In-Vitro Protein digestibility; MH- Microwave heating; OR- Oven roasting; GLF- Green lentil flours; RLF- Red lentil floursLe prétraitment thermique de lentilles avant de les moudre en farine peut faciliter son utilisation dans la préparation de produits à valeur ajoutée. Cette étude porte sur l'évaluation des effets des prétraitments thermiques par chauffage par torréfaction(CT), par chauffage par microondes (CM), ou par l'eau bouillante (EB), sur la teneur en composés phénoliques totaux (CPT), sur l'activité anti-oxydante totale (AAOT), sur les teneurs en inhibiteur de trypsine, et sur la digestibilité in-vitro des protéines (DIVP). Les essais ont été faits sur des farines obtenues à partir de lentilles rouges décortiquées et de lentilles vertes non decortiquées après l'application des prétraitment thermiques. Les deux varieties de lentilles ont été prétraitées selon des combinaisons déterminées de températures et de durées de traitment. Les teneurs en CPT et l'AAOT ont été évaluées par spectrophotométrie à 760 nm en utilisant la méthode de Folin-Ciocalteu et la méthode DPPH (1, 1- diphényl-2-picrylhydrazyle) de piégeage des radicaux libres. Les résultats ont démontré des différences significatives entre les deux types de lentilles étudiées. Le prétraitement CM (5 min) a conduit à une augumentation significative (P≤0.05) de la teneur en CPT dans les échantillons de farine de lentilles vertes [8.85 mg GAE/g de poids sec (ps) lorsque comparé aux échantillons de farine de lentilles vertes non-traitées [7.5 JEU mg/g ps]. Une tendance similaire a été observée auprés des farines de lentilles vertes torréfiées au four pendant 20 min. L'AAOT des farines de lentilles vertes non-traitées était d'environ 86% et elle était supérieure à celle obtenue à partir de lentilles rouges non-traitées. Les teneurs en CPT observées dans les échantillons traités soit par CT soit par CM étaient plus élevées que celles des échantillons non traitées et peuvent refléter des réductions en AAOT obetnues. Les teneurs en CPT et en AAOT des échantillons obtenues à la suite du prétraitment EB étainet nettement inférieures et peut être attributées à plusieurs facteurs dans la matrice. Bien que les lentilles soit riches en protéines, plusiers facteurs limitent leurs utilisation pour la consommation humaine. Ces principaux facteurs sont : la présence de composants antinutritionnels, le temps nécessaire à la préparation, les saveurs désagréables, et la digestibilité réduites des protéines. On peut réduire l'impacte des facteurs antinutritionnels comme les inhibiteurs de la trypsine par des traitements thermiques. Les résultats ont demontré que l'utilisation du pretraitment CM permettait de réduire significativement (P≤0.05) l'activité des inhibiteurs de trypsine lorsque comparés aux prétraitments CT et EB. Il a aussi été démontré que l'augmentation de la dureé des prétraitments thermiques par CT ou par EB permettait d'accroitre la DIVP. Dans tous les cas étudiés, l'application d'un prétraitment thermique sur les lentilles a permis d'améliorer la DIVP.Mots clés : Lentilles vertes, lentilles rouges, farines, traitements thermiques, composés phénoliques totaux (CPT), activité anti-oxydante totale (AAOT), digestibilité in-vitro des protéines (DIVP), équivalent en acide gallique, chauffage par torréfaction (CT), chauffage par microondes (CM), chauffage par trempage dans l'eau bouillante (EB).
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Madhi, Yahia Saeed. "Effect of germination, cooking, canning and storage on the nutrient composition of four varieties of lentils (Lens esculenta Moench)." Thesis, Royal Holloway, University of London, 1985. http://repository.royalholloway.ac.uk/items/85e39223-3676-49bd-844f-a13c55286036/1/.
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Various parameters (physical and biochemical) of the dry seeds of four varieties of lentils (Lens esculenta Moench): two Syrians, one Jordanian, and one American were studied as were those of seedlings grown for up to 5 days in the dark (25°C and 35°C) and in the light (25°C). The nutrients studied were: carbohydrates, lipids, crude fibre, proteins, and the vitamins: vitamin C, thiamine, and riboflavin. On the whole, there were no wide differences in nutritional values between the four lentil varieties studied. 1. Dark-grown seedlings (25°C) were found to be nutritionally better in retaining their vitamins than those grown at 35°C, and also than those grown at 25°C in the light. On the other hand, light-grown seedlings were nutritionally better in terms of protein quantity. 2. The four varieties of lentil seeds were also home processed (soaked in water and cooked for 1 h at 100°C). Total available carbohydrates, individual soluble sugars, free amino acids, and the three vitamins decreased significantly, lipids and proteins decreased slightly, while crude fibre increased significantly after home processing. Two chemicals, ammonium carbonate and trisodium phosphate, added in the soaking solution significantly decreased cooking time. 3. The lentil seeds were also canned. Most nutrients studied decreased after canning. 4. Storage of the canned products for 1 year at 25°C caused further losses in total available carbohydrates, proteins, free amino acids, and the 3 vitamins, while crude fibre again increased. Storing the canned products at 35°C for one year did affect the various nutrients but the decreases were not all that different from those stored at 25°C. 5. Parallel studies using scanning electron microscopy showed changes in the cellular structure of germinated, cooked, and canned lentil seeds. During germination, starch granules change their shape, become porous and easily breakable, and the gaps between starch granules become larger. In cooked lentils, the cells become more separate, and starch granules change their shapes. In canned seeds, starch granules become rough and show a loss of birefringence. 6. These studies have shown that compared to seeds germinated under the different conditions, dry unprocessed seeds are the more nutritious. It has been shown that canned seeds too can offer certain advantages nutritionally. However, they are more costly to produce than are dry seeds. Therefore, the home processing of lentil seeds is very beneficial nutritionally in a diet sadly lacking in carbohydrates, in proteins, and in vitamin C, in thiamine, and in riboflavin.
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Khorramdelazad, Mahsa. "Investigation of genetic and molecular mechanisms of lentil (Lens culinaris) cv. ILL7537 during early defence responses to Ascochyta lentis." Thesis, Griffith University, 2019. http://hdl.handle.net/10072/389670.
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Lentil (Lens culinaris) is a valuable and popular cool season legume worldwide. The lens shaped seed legume is a rich source of protein (up to 35%), complex carbohydrates, vitamin A and B, and potassium and iron and is high in fibre and low in sodium and fat. Therefore, lentil is a staple food in no- and low-meat diets especially in North Africa, the Middle East, the Indian subcontinent and parts of the Americas. Due to the high demand for lentil globally, its annual production has increased from 0.85 to 5.03 Mt within the last five decades. Australia is the fourth largest producer in the world with an annual export value of $185 million AUD. However, lentil global production and yield quality is greatly affected by the devastating fungal disease “Ascochyta blight” (AB).
Ascochyta lentis (Vassilievsky) is a necrotrophic fungus that causes AB, affecting all above-ground parts of the plant resulting in up to 70% yield loss and marketability reduction annually. The fungus is endemic to lentil growing regions globally and is the top biotic constraint to lentil production in Australia. A range of studies have been conducted on A. lentis to clarify the epidemiology, diagnostics, lifecycle, survival, chemical susceptibility as well as pathogenic variation and physiology of the host-pathogen interaction. The knowledge on A. lentis pathogenicity together with identification of genetic and molecular mechanisms of lentil defence in the naturally resistant lentil genotypes would lead to the most economic, environmentally friendly and effective method of disease management.
This study identified the genetic and molecular aspects of defence to A. lentis by identifying novel defence related genes and molecular pathways, their functions and locations on lentils chromosomes as well as some linked SNPs to the candidate genes. The identified genes, SNPs and QTLs identified may be used as genetic tools for the selection of A. lentis resistance within ILL7537 in future pre-breeding efforts.Thesis (PhD Doctorate)
Doctor of Philosophy (PhD)
School of Environment and Sc
Science, Environment, Engineering and Technology
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El-Hassan, Said A. K. "Biological control of vascular wilt of lentil (Fusarium oxysporum f. sp. lentis) by Bacillus subtilis and Trichoderma hamatum." Thesis, University of Reading, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.405539.
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Kemal, Seid Ahmed. "Pathogenic variability, inheritance of virulence and host-pathogen interaction with temperature in Ascochyta fabae f. sp. lentis on lentil." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1996. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/nq24061.pdf.
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Lemarinel, Béatrice Gatinel Damien. "Etude clinique de la qualité de vision et des modifications du diamètre pupillaire à long terme après insertion d'un implant phaque Artisan® pour la correction chirurgicale de la myopie forte." Créteil : Université de Paris-Val-de-Marne, 2006. http://doxa.scd.univ-paris12.fr:80/theses/th0247729.pdf.
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Boillot, Nathalie. "Etude théorique des lentilles : méthode matricielle, application à l'utilisation des objectifs en photographie." Paris 5, 1993. http://www.theses.fr/1993PA05P067.
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Ramdani, Sofiane. "Variétés lentes de systèmes dynamiques chaotiques considerés comme lents-rapides applications aux lasers." Toulon, 1999. http://www.theses.fr/1999TOUL0005.
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Ce mémoire porte sur les systèmes dynamiques autonomes lents-rapides. Nous les définissons initialement comme étant modélisés par des systèmes d'équations différentielles qui comportent un petit paramètre en facteur d'une composante de la vitesse. Pour étudier leurs solutions, dont certaines sont chaotiques, nous proposons une méthode d'analyse mathématique basée sur un raisonnement itératif qui permet d'aboutir, sous certaines conditions, à une équation analytique de la variété lente (V. L. ). Cette équation est obtenue en considérant que la V. L. Est l'enveloppe des pians localement orthogonaux au vecteur propre dit rapide à gauche du système tangent. Ce critère ne peut s'appliquer rigoureusement que dans les zones où la partie non linéaire du développement au premier ordre des équations n'altère pas le caractère attractif de la variété. On peul également obtenir l'équation de la V. L. En écrivant qu'elle est localement engendrée par les vecteurs propres ients. La méthode permet de caractériser géométriquement l'attracteur, et ou\re la voie à une analyse qualitative globale de sa dynamique. Les résultats sont illustrés par les études du modèle de Van der Pol. Et de l'oscillateur électronique chaotique de Chua « cubique » et de Chua. Nous avons ensuite étendu cette méthode à une classe plus large de systèmes ne comportant pas de petit paramètre, mais dont le système tangent possède une valeur propre réelle négative dans un domaine de l'espace des phases. Ainsi, la méthode a été appliquée au modèle de Lorenz pour obtenir l'équation de la variété lente associée. Ce résultat nous a permis d'établir une comparaison avec le modèle de Chua d'un point de vue qualitatif. Enfin, la méthode a été utilisée pour établir l'équation de la V. L. De modèles lents-rapides issus de l'optique non linéaire, comme l'oscillateur paramétrique optique, et de modèles de laser dont le modèle de Lorenz-HakenIn this work we deal with slow-fast autonomous dynamical systems. We initially define them as being modeled by differential equations systems having a small parameter muitiplying one of their velocity components. In order to analyze their solutions, which some are chaotic, we propose a mathematical analytic method based on an iterative approach. Under some conditions, this method allows us to give an analytic equation of the slow manifold (S. M. ). This equation is obtained by considering that the S. M. Is given by the plan locally orthogonal to the tangent system's left fast eigenvector. This result can be applied as long as the influence of the nonlinear terms of the velocity is lower than the fast component, fn this case, the behavior is the same as the so-called linear tangent system and the S. M. Remains attractive in spite of the nonlinear part of the velocity. It is also possible to compute the S. M. Equation by using the tangent system's slow eigenvectors. The method allows us to give a geometrical characterization of the attractor and a global qualitative description of its dynamics. The results are applied to the Van der Pol model, Chua's cubic model and Chua's model. The method used to compute the equation of the S. M. Has been extended to systems having a real and negative eigenvalue in a large domain of the phase space, as it is the case with Lorenz system. Indeed, we give the Lorenz S. M. Equation and this allows us to make a qualitative study comparing this model and Chua's model. Finally, we apply the results to give the S. M. Equation of nonlinear optical slow-fast systems as the optical parametric oscillator model and the laser model of Lorenz-Haken
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Vallée, Agnès. "Le risque infectieux chez les porteurs de lentilles de contact : prévention." Bordeaux 2, 1996. http://www.theses.fr/1996BOR2P095.
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Chauvin, Bernard. "La lentille pansement en collagène : place dans le traitement des lésions cornéennes." Montpellier 1, 1992. http://www.theses.fr/1992MON11204.
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Johnson, Casey Ray. "Prebiotics in Lentil (Lens Culinaris L.)." Thesis, North Dakota State University, 2013. https://hdl.handle.net/10365/27035.
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Prebiotic carbohydrates are an important component of healthy diet. The objectives of this study were (1) to compare the concentrations of prebiotic carbohydrates in different lentil genotypes and growing locations and (2) to compare the concentrations of prebiotic carbohydrates in lentil under various processing and preparation procedures. Mean concentrations of prebiotics in lentil genotypes were as follows: raffinose-family oligosaccharides (RFO) (raffinose + stachyose, 2509 mg; verbascose, 1562 mg), fructo-oligosaccharides (nystose, 62 mg), sugar alcohols (sorbitol, 1220 mg; mannitol, 203 mg), and resistant starch (RS), 7.5 g 100 g-1. Modest RFO concentration reductions were observed with cooking, cooling, and reheating. Mean RS concentration in raw, cooked, cooled, and reheated lentil were 3.0, 3.0, 5.1, and 5.1 g/100g respectively, clearly demonstrating cooling-induced synthesis of RS. Study results suggest that lentil contains nutritionally significant concentrations of prebiotics and that those concentrations may be enhanced through breeding, locational sourcing, and cooking and preparation procedures.North Dakota State University Experimental Station
Northern Pulse Growers Association
USA Dry Pea and Lentil Council
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Camboim, Denise Cruz. "Lentigo maligno microinvasivo." Botucatu, 2016. http://hdl.handle.net/11449/143121.
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Orientador: Mariângela Esther Alencar MarquesResumo: O uso da imuno-histoquímica pode aumentar a acurácia na detecção de melanócitos neoplásicos na derme. Com o objetivo de pesquisar microinvasão, cento e nove casos previamente diagnosticados como lentigo maligno (LM) foram resgatados dos arquivos do Departamento de Patologia da Faculdade de Medicina de Botucatu, da Universidade Estadual Paulista (FMB/UNESP) no período de 01/01/2002 a 01/01/2014. As lâminas histológicas de todos os casos foram revisadas pelos autores para confirmação do diagnóstico e seleção do bloco mais representativo para realização de estudo imuno-histoquímico com Melan-A e MITF. Em 25 casos (22,9%) foi observada invasão focal da derme por melanócitos neoplásicos claramente imunomarcados pelo Melan-A. Nos locais onde se evidenciou invasão foi realizada a medida da espessura de Breslow que variou de 0,1 a 0,45 mm. A coloração imuno-histoquímica com MITF evidenciou positividade focal na derme, porém a identificação das células coradas não permitiu a mesma segurança da coloração pelo Melan-A. Todas as lâminas de imuno-histoquímica foram contracoradas pelo Giemsa para diferenciar positividade para o anticorpo testado e melanina. O presente estudo permitiu identificar microinvasão dérmica em 22,9% dos casos de lentigo maligno, mostrando a possibilidade de estadiamento e tratamento inadequado quando utilizada a técnica de rotina. Os achados são um alerta para os patologistas e clínicos, especialmente em lesões de grandes dimensões e associadas com infiltrado linf... (Resumo completo, clicar acesso eletrônico abaixo)
Abstract: The use of immunohistochemistry can enhance the accuracy in detecting neoplastic melanocytes in the dermis. In order to search for microinvasion, one hundred and nine cases previously diagnosed as lentigo maligna (LM) were retrieved from the archives of the Department of Pathology, Faculty of Medicine of Botucatu, Universidade Estadual Paulista (FMB / UNESP) in the period of 01/01 / 2002 to 01/01/2014. The histological slides of all cases were reviewed by the authors to confirm the diagnosis and selection of the most representative block for performing immunohistochemical study with Melan-A, and MITF. In 25 cases (22.9%) was observed focal dermal invasion by neoplastic melanocytes clearly immunostained for Melan-A. In these cases the Breslow thickness ranged between 0.1 and 0.45mm. Immunohistochemical staining showed MITF focal positivity in the dermis, but did not allow the same certainty of Melan-A staining. In order to distinguish melanin in macrophage cytoplasm from brown-staining melanocytes, the slides were counterstained by Giemsa. This study identified dermal microinvasion in 22.9% cases of lentigo maligna, showing the possibility of inadequate staging and treatment when using the routine technique. The findings are a warning for pathologists and clinicians, especially in large lesions and associated with lymphocytic infiltrate that obscures their limits.
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Novikova, Anna. "Élaboration d'optiques infrarouges par combinaison de la mécanosynthèse et du frittage SPS." Thesis, Rennes 1, 2018. http://www.theses.fr/2018REN1S115.
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En 2010, une nouvelle méthode de production de verres de chalcogénure transparents dans l'infrarouge a été brevetée, alliant la mécanosynthèse au frittage Spark Plasma Sintering. Ce travail de thèse intègre le transfert de technologie vers la société Diafir dans le cadre d'un projet RAPID, financé par la DGA. Il a pour but un travail d'optimisation des procédés de synthèse et de mise en forme a été mené afin de permettre d'adapter cette technologie innovante à un volume industriel. Les verres de composition Ge28Sb12Se60, 80GeSe2-20Ga2Se3, Te20As30Se50, As2Se3 et As2S3 ont été synthétisés par fusion-trempe, broyés finement puis frittés par SPS. Des disques avec des transmissions comparables au verre obtenu par voie classique ont été obtenus. Des traitements antireflets ont été déposés avec succès à leur surface. Le développement de moules spécifiques au SPS a conduit à la production de lentilles sphériques adaptables à des dispositifs optiques. Ces compositions vitreuses ont ensuite été synthétisées par mécanosynthèse puis frittées par SPS. Les disques obtenus présentant des phénomènes de diffusion récurrents. Les principales causes de diffusion ont été analysées afin d'optimiser le procédé de synthèse par voie mécaniqueIn 2010, a new method of production of chalcogenide glasses, transparent in the infrared, has been patented. It combines mechanosynthesis to Spark Plasma Sintering. In this thesis work, there is the technology transfer to the Diafir society included in the RAPID project, founded by the DGA. The aim is to optimize the processes of synthesis and forming in order to adapt this innovating technology to an industrial scale. The glasses of composition Ge28Sb12Se60, 80GeSe2-20Ga2Se3, Te20As30Se50, As2Se3 and As2S3 have been synthetized by melt-quench method then crushedfinely before to be sintered by SPS
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Sánchez, Alonso Carles. "Dark energy properties from the combination of large-scale structure and weak gravitational lensing in the dark energy survey." Doctoral thesis, Universitat Autònoma de Barcelona, 2017. http://hdl.handle.net/10803/457878.
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Aquesta tesi doctoral es centra en l’extracció d’informació cosmològica utilitzant cartografiats de galàxies fotomètrics, en particular el Dark Energy Survey (DES), tot minimitzant l’impacte dels efectes sistemàtics predominants. La tesi inclou treball tant en les fases inicials com finals de l’anàlisi de dades de DES, des del càlcul de desplaçaments cap al vermell (redshifts) fotomètrics i tests als possibles efectes sistemàtics en la mesura de formes de galàxies, a l’estimació de paràmetres cosmològics utilitzant la combinació d’informació d’estructura a gran escala i lents gravitacionals febles.
A la tesi es presenta la primera demostració de la fiabilitat dels redshifts fotomètrics obtinguts amb la càmera de DES, utilitzant un conjunt nombrós d’algoritmes i dades del període de validació de la ciència de DES (Science Verification, SV) conjuntament amb dades de cartografiats espectroscòpics com ara VVDS, zCOSMOS i ACES. En aquesta part presentem una àmplia comparació de mètodes de càlcul de redshifts fotomètrics utilitzant dades reals de DES.
Respecte a lents gravitacionals febles, a la tesi es caracteritza la senyal al voltant de galàxies per una varietat de mostres, incloent testatge exhaustiu d’efectes sistemàtics i l'estudi del biaix de galàxies, el qual descriu com les galàxies poblen halos de matèria fosca. A part de l'ús de galàxies com a lents, també s’estudia la senyal de lent gravitacional produïda per buits còsmics, per primer cop en un cartografiat fotomètric, utilitzant un nou algoritme per trobar buits que s’ha dissenyat en aquesta tesi concretament per tals conjunts de dades, i que s’ha aplicat aplicar també a l'estudi de l’efecte anomenat Sachs-Wolfe.
Com a peça central de la tesi, es presenten les mesures de correlacions angulars de galàxies i de lents gravitacionals febles al voltant de galàxies vermelles lluminoses en el conjunt de dades DES-SV i es combinen per produir el primer anàlisi cosmològic de la combinació d’estructura a gran escala i lents gravitacionals a DES. Els resultats no són competitius amb els del satèl·lit Planck (DES-SV comprèn només aproximadament 3% de la mostra de dades final de DES) però és consistent amb anàlisis independents amb les mateixes dades i estableix un marc en el modelat i tractament d'errors sistemàtics per combinacions futures de mesures a DES i a la generació pròxima de cartografiats de de galàxies com LSST, WFIRST i Euclid.This PhD thesis is focused on extracting cosmological information from photometric galaxy surveys, in particular the Dark Energy Survey, while minimizing the impact of dominant systematic errors. The thesis includes work on both the first and last stages of survey data analysis, from photometric redshifts (photo-z’s) and shear systematics testing to cosmological parameter estimation using large-scale structure (LSS) and weak gravitational lensing (WL). I performed the first assessment of the photo-z capabilities of the DES Camera by using an extensive set of photo-z algorithms, and data from the DES Science Verification (SV) period matched to spectroscopic data from surveys like VVDS, zCOSMOS and ACES. That part provides a thorough comparison between training and template-based photo-z methods using real data. On WL, I characterized the galaxy-galaxy lensing signal for a variety of galaxy samples, including exhaustive systematics testing and the study of the galaxy bias, which describes the way galaxies populate dark matter halos. Beyond the usage of galaxies as lenses, I also studied the lensing signal produced by cosmic voids, for the first time in a photometric survey, using a new void finder I designed specifically for such data sets, and which has been applied as well to the study of the Integrated Sachs-Wolfe effect. As a major piece of work in the thesis, I measured the angular galaxy clustering and galaxy-galaxy lensing of luminous red galaxies in the DES-SV sample and combined them to conduct the first cosmological analysis from the combination of LSS and WL probes in DES. The results are not competitive with those from Planck (DES-SV comprises only about 3% of the final DES data sample) but show consistency with the DES cosmic shear analysis and establish a benchmark in the modeling and treatment of systematic errors for future combinations of probes in DES and the next generation of galaxy surveys like LSST, WFIRST and Euclid.
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Robert, François-Maël. "Dispositif de pointage visuel par laser embarqué sur une lentille de contact sclérale." Electronic Thesis or Diss., Ecole nationale supérieure Mines-Télécom Atlantique Bretagne Pays de la Loire, 2023. http://www.theses.fr/2023IMTA0380.
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L’œil est un organe sur lequel la mesure de différents paramètres biologiques et cognitifs est possible. En particulier, l’étude des mouvements de l’œil et de la position du regard, ou oculométrie, a diverses applications dans des domaines tels que la conception d’interfaces humain-machines, les thérapies de restauration et réhabilitation visuelles ou la mesure de la charge cognitive. Le plus couramment, un oculomètre consiste en un dispositif comportant une caméra filmant l’œil associée à un algorithme de détection de pupille, la position de celle-ci étant liée à une position de regard dans l’environnement. Cette technique nécessite un traitement d’image pouvant être complexe et sujet à de mauvaises détections de pupille. Ce travail de thèse propose un nouveau type d’oculomètre vidéo, basé sur une lentille de contact sclérale dans laquelle sont encapsulés deux VCSELs, des lasers émettant dans l’infrarouge proche (850 nm). Ces lasers sont alimentés par induction à l’aide d’une bobine embarquée dans une monture. La monture embarque aussi la caméra filmant la lentille sur l’œil et une seconde caméra filmant l’environnement. La position des spots infrarouges de la lentille est associée à une position du regard par une calibration. Cette approche a été testée et validée expérimentalement, sur banc et sur humain au sein de la plateforme Streetlab à l’Institut de la Vision. Le dispositif a été certifié et a obtenu un marquage CE. L’utilisation d’un capteur optique de position, un PSD (Position Sensing Detector), pour remplacer la caméra filmant l’œil et gagner en fréquence d’acquisition, a été également été testée. La matérialisation du regard peut également passer par l’imagerie directe des spots infrarouges projetés dans l’environnement. Un élément d’optique diffractive a donc été incorporé à la lentille, pour collimater ou mettre en forme le faisceau issu des VCSELs sous forme de croix, et ainsi désigner une cible sans perturber la version humaine. La position regardée est vue par une caméra filmant dans l’infrarougeThe eye is an organ that can be used to measure various biological and cognitive parameters. In particular, the study of eye movements and gaze position, or oculometry, has various applications in fields such as the design of human-machine interfaces, visual restoration and rehabilitation therapies or the measurement of cognitive load. Most commonly, an oculometer consists of a device comprising a camera filming the eye, combined with a pupil detection algorithm, the position of which is linked to a gaze position in the environment. This technique requires image processing that can be complex and prone to poor pupil detection. This thesis proposes a new type of video oculometer, based on a scleral contact lens encapsulating two VCSELs, lasers emitting in the near infrared (850 nm). These lasers are powered inductively by a coil embedded in a mount. The mount also carries the camera filming the lens on the eye and a second camera filming the environment. The position of the infrared spots on the lens is associated with a gaze position by calibration. This approach has been tested and validated experimentally, on bench and on human subjects, on the Streetlab platform at the Institut de la Vision. The device has been certified and CE marked. The use of an optical position sensor, a PSD (Position Sensing Detector), to replace the camera filming the eye and gain in acquisition frequency, was also tested. The materialization of the gaze can also be achieved by direct imaging of infrared spots projected into the environment. A diffractive optics element was therefore incorporated into the lens, to collimate or shape the beam from the VCSELs in the form of a cross, and thus designate a target without disturbing the human version. The viewed position is seen by a camera filming in the infrared
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Carranza, Cunya Janeth, Nieto Antuane Flórez, Estrella José Málaga, and Castro Andrea Torres. "Lentes Express." Bachelor's thesis, Universidad Peruana de Ciencias Aplicadas (UPC), 2018. http://hdl.handle.net/10757/625278.
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El presente proyecto es una de las propuestas que beneficia a muchas personas. A lo largo de estas semanas, hemos visto diferentes perspectivas de los problemas que las personas plantean cuando quieren optar por un servicio eficiente y confiable. La ciudad en la que vivimos hace que cada vez más personas acudan a un servicio de entrega y que las empresas estén a la vanguardia de la tecnología y la necesidad de los clientes. Somos una empresa que realiza la entrega de lentes de varias clínicas oftalmológicas, que tienen nuestros principales clientes. Esta idea de negocio tiene la necesidad de tener las clínicas. Las soluciones oftalmológicas de potencia proporcionan las lentes para que sus pacientes eviten los problemas logísticos en la clínica, reducen el tiempo y el costo del almacenamiento de los artículos visuales que permanecen en el área de envío. . Además, tomar un servicio de entrega de lentes hace que la clínica sea un valor agregado. De esta manera evita a sus pacientes en la pérdida de tiempo por el tráfico. Tenemos nuestros asesores de ventas que sirven como enlace para captar nuestro objetivo principal, las clínicas oftalmológicas, que desean utilizar nuestro servicio de entrega de lentes. Nuestra distribución se realiza a través de diferentes puntos de Lima que externalizan el servicio de motorizado a una empresa que tiene las aplicaciones roja y móvil. Licencias de servicio, tiempo de espera y tiempo de entrega.The present project is one of the proposals that benefits many people. Throughout these weeks we have seen different perspectives of problems that people bring when they want to opt for an efficient and reliable service. The city in which we live makes more and more people come to a delivery service and that companies are at the forefront of technology and the need of customers. We are a company that performs the delivery of lenses from various ophthalmological clinics, who have our main clients. This business idea has the need to have the clinics. The ophthalmologic solutions of power provide the lenses for their patients to avoid the logistical problems in the clinic, they reduce the time and the cost of the storage of the visual articles that remain in the area of dispatch. . Also, taking a lens delivery service makes the clinic an added value. In this way he avoids his patients in the loss of time by traffic. We have our sales consultants who serve as a link to capture our main objective, ophthalmological clinics, who wish to take our lens delivery service. Our distribution is made by different points of Lima that outsource the service of motorized to a company that has the red and mobile applications. Service licenses, waiting time and delivery time.
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Richard, Johan. "Propriétés des premières étoiles et galaxies : contraintes sur les modèles de formation des galaxies." Phd thesis, Toulouse 3, 2005. https://tel.archives-ouvertes.fr/tel-00011648.
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Ce travail de thèse repose sur l'analyse de trios projets observationnels destines à la détection et l'étude de sources astrophysiques extrêmement distantes. Les champs considérés ont été centrés sur des amas de galaxies utilisés comme télescopes gravitationnels, permettant ainsi de bénéficier de l'effet d'amplification. Après avoir introduit le contexte cosmologique de cette thèse et l'effet de lentille gravitationnelle, je présente tout d'abord une recherche d'émetteurs Lyman-a par de la spectroscopie des régions les plus amplifiées d'un ensemble d'amas. Je décris ensuite l'étude du cas particulier d'une galaxie à z~7 observée par HST et Spitzer, pour laquelle nous avons dérivé des contraintes sur les propriétés physiques. Enfin, je donne les résultats d'un projet de recherche effectué à l'aide du télescope VLT. Il est possible d'obtenir des contraintes sur la fonction de luminosité UV et le taux de formation stellaire à très grand zThis thesis work is based on the data analysis from three main observational projects aimed at the detection and study of extremely distant astrophysical sources. The chosen fields were centered on galaxy clusters used as gravitational telescopes, thus taking benefit of the magnification effect. After introducing the cosmological context of this thesis and the gravitational lensing effect, I first present a search for Lyman-a emitters using blind spectroscopy of the most magnified regions of a galaxy clusters sample. I then describe a study on one particular distant (z~7) galaxy, observed by HST and Spitzer, for which I derive constraints on the physical properties. I finally give the results of a photometric research project for extremely distant objects, carried out using VLT telescopes in the near-infrared. From the whole sample of photometric candidates, it is possible to get constraints on the UV luminosity function and the cosmic star formation rate at very high z
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Ferreira, Daniele Alves. "Reactions using whole cell biocalytic lens culinaris (lentil)." Universidade Federal do CearÃ, 2012. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=8566.
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CoordenaÃÃo de AperfeiÃoamento de Pessoal de NÃvel SuperiorThis paper describes the use of seeds of lentil (Lens culinaris) as intact plant system in biocatalytic reactions of reduction and hydrolysis. Initially, some plant sources were evaluated for their action in the biocatalytic reduction of aromatic ketone acetophenone. The plants that showed positive results in the reduction reaction underwent determination of their protein content by the methods of Lowry and Bradford. Lens culinaris was plant species revealed that most relevant biocatalytic activity, in agreement with their high protein content (1.33 mg / mL and 1.07 mg / mL according to Bradford and Lowry methods, respectively), and thus The plant was selected for further study. Subsequently, always using the model substrate acetophenone as the reaction parameters were optimized: concentration of biocatalyst; reaction kinetics; stirring speed the reaction medium. After selecting these parameters, the bioreduction reactions were extended to other derivatives of prochiral acetophenone, which were observed with bioconversions yields and enantiomeric excess (ee) ranging from low to high percentages. Generally, were observed steric and electronic influences due to the type and relative position of the various substituents on aromatic compounds. In the case of substrates containing two different functional groups susceptible to reduction, low chemoselectivity observed. Investigated also other carbonyl compounds such as aliphatic and aromatic ketones, aromatic aldehydes and aromatic nitro compounds. In addition investigated the possibility that hydrolytic action from compounds belonging functions esters, amides and nitriles. The yields of the reactions were calculated using Gas Chromatography coupled with Mass Spectrometry (GC-MS) and Nuclear Magnetic Resonance Hydrogen (1H NMR). The enantiomeric excess (ee) were determined by High Performance Liquid Chromatography (HPLC) equipped with chiral columns.
Este trabalho relata a utilizaÃÃo das sementes de lentilha (Lens culinaris) como sistema Ãntegro de planta em reaÃÃes biocatalÃticas de reduÃÃo e hidrÃlise. Inicialmente, algumas fontes vegetais foram avaliadas quanto sua aÃÃo biocatalÃtica na reduÃÃo da cetona aromÃtica acetofenona. Os vegetais que revelaram resultados positivos na reaÃÃo de reduÃÃo foram submetidos à determinaÃÃo do seu teor de proteÃnas atravÃs dos mÃtodos de Lowry e Bradford. Lens culinaris foi à espÃcie vegetal que revelou atividade biocatalÃtica mais relevante, em acordo com seu alto teor de proteÃna (1,33 mg/mL e 1,07 mg/mL, segundo os mÃtodos de Bradford e Lowry, respectivamente), e assim, foi o vegetal selecionado para estudos mais aprofundados. Posteriormente, utilizando sempre a acetofenona como substrato modelo foram otimizados os parÃmetros reacionais: concentraÃÃo do biocatalisador; cinÃtica de reaÃÃo; velocidade de agitaÃÃo e meio reacional. ApÃs seleÃÃo desses parÃmetros, as reaÃÃes de biorreduÃÃo foram estendidas a outros derivados prÃ-quirais da acetofenona, onde foram observadas bioconversÃes com rendimentos e excessos enantiomÃricos (ee) que variaram de baixas a elevadas porcentagens. De modo geral, foram observadas influencias eletrÃnica e estÃrica devidas ao tipo e a posiÃÃo relativa dos diferentes substituintes nos compostos aromÃticos. No caso de substratos contendo dois grupos funcionais diferentes suscetÃveis de reduÃÃo, foi observada baixa quimiosseletividade. Foram investigados tambÃm outros compostos carbonilicos, como: cetonas alifÃticas e aromÃticas, aldeÃdos aromÃticos e nitrocompostos aromÃticos. Em adiÃÃo foi investigado a possibilidade de aÃÃo hidrolÃtica a partir de compostos pertencente Ãs funÃÃes Ãsteres, amidas e nitrilas. Os rendimentos das reaÃÃes foram calculados utilizando Cromatografia Gasosa acoplada à Espectrometria de Massas (CG-EM) e RessonÃncia MagnÃtica Nuclear de HidrogÃnio (RMN 1H). Os excessos enantiomÃricos (ee) foram determinados atravÃs de Cromatografia LÃquido de Alta EficiÃncia (CLAE) equipada com colunas quirais.
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Muzy, Ricardo Casarini. "Através das lentes." reponame:Repositório Institucional da UFSC, 2012. http://repositorio.ufsc.br/handle/123456789/103443.
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Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Ciências da Educação, Programa de Pós-Graduação em Educação, Florianópolis, 2012Made available in DSpace on 2013-07-16T04:39:48Z (GMT). No. of bitstreams: 1 317401.pdf: 1715376 bytes, checksum: 63cd29ecd08cce0430487b8208eaea8c (MD5)
A proposta é investigar as possibilidades do uso da fotografia como instrumento em processos educativos de crianças e jovens. Foram investigadas as possibilidades do uso da fotografia como instrumento educativo e elemento de construção das crianças e jovens envolvidos no processo. A pesquisa se constitui em uma experiência de uma investigação-intervenção, na qual foram realizadas oficinas de fotografia com crianças dos anos iniciais do Ensino Fundamental de uma escola pública na cidade de Florianópolis e com dois grupos de jovens de 17 a 29 anos, de duas diferentes regiões do Estado de Santa Catarina. Estes jovens estavam envolvidos em um projeto de uma entidade de assistência. O trabalho está ancorado e se estrutura principalmente nas propostas da Pedagogia do Oprimido, de Paulo Freire, Filosofia da Libertação, de Enrique Dussel, Jornalismo Libertador, de Elaine Tavares, na Pedagogia de Simón Rodríguez e ainda, nos pressupostos da mídia-educação. Os resultados indicaram que, tanto no ambiente escolar, como no espaço de formação assistencial, a fotografia não se constituía em ferramenta de captura e análise da realidade. As análises indicam ainda, que a fotografia pode ser um poderoso instrumento no processo educativo de crianças e jovens. Compreender esse fazer e dele se apropriar pode também transformar a relação na sala de aula, aproximando o educador da realidade concreta do educando, fazendo com que o processo educativo aconteça de forma fluida e natural.
Abstract : The proposal is to investigate the possibilities of using photography as a tool in the educational process of children and youth. We investigated the possibilities of using photography as a tool for education and development of children and young people involved in the process. The work constitute an experience of a research-intervention, which were conducted photography workshops with children that study in the early years of elementary school at a public school in the city of Florianópolis and with two groups of young people aged 17 to 29 years. These young people were involved in a project of social care. The work is anchored mainly on the structure and motions of Pedagogy of the Oppressed, Paulo Freire's Philosophy of Liberation by Enrique Dussel, Liberator Journalism , Elaine Tavares, in the Pedagogy of Simón Rodríguez and also in the assumptions of media educational. The results indicated that both the school setting, as space training assistance, the photograph does not constitute tool for capturing and analyzing reality. The analyzes also indicate, that photography can be a powerful tool in the educational process of children and youth. We understand that the use of fotografe can transform the relationship in the classroom. Can the teacher approaching the reality of the student, making the educational process happens smoothly and naturally.
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Bakhsh, Ahmad. "Genetic analysis of seed characters in lentil (Lens Culinaris)." Thesis, University of East Anglia, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.334607.
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Ekanayake, Lukshman Jayampathi. "Selenium on Increasing Lentil (Lens Culinaris Medikus.) Grain Yield." Thesis, North Dakota State University, 2014. https://hdl.handle.net/10365/27405.
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Selenium is an essential element for mammals but it has not been considered as essential for higher plants. The effect of Se application on lentil grain yield, antioxidant activity, nitrogen fixation, and seed Se concentration studied. Experiments were conducted at Carrington Research and Extension Center in 2012 and 2013. Selenium fertilization increased the lentil grain yield by 5 % in 2012 and by 9 % in 2013. Selenium application increased the antioxidant activity (70 % inhibition) of lentils compared to the untreated control (61% inhibition). Percentage nitrogen derived from air was increased with Se fertilization by 17 % and 12 % in 2012 and 2013, respectively, with Se fertilization. Seed Se concentration was significantly higher in selenate treated lentils (1.4 mg/kg) compared to selenite (0.9 mg/kg) and the control (0.6 mg/kg). Overall, application of Se increased lentil grain yield, nitrogen fixation, antioxidant protection, and seed Se concentration.
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Ahmed, Fazle Rabbi Sadeque. "Response of the rhizobial-mycorrhizal-lentil symbiosis to arsenic." Thesis, University of Aberdeen, 2005. http://digitool.abdn.ac.uk/R?func=search-advanced-go&find_code1=WSN&request1=AAIU205721.
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The thesis focused on the response of the rhizobial-mycorrhizal-lentil symbiosis to arsenic as an environmental contaminant. This was instigated by the concern over the arsenic contaminated irrigation water problem in South East Asia, and in particularly, its impact on Bangladesh agriculture. This led to a holistic approach to the study, by investigating the effect of inoculation with Rhizobium leguminosarum and the AM fungus Glomus mosseae, as well as application of superphosphate and rock phosphate, on lentil growth, nitrogenase activity and nutrient uptake (especially N and P) in the presence of arsenic contaminated irrigation water. Positive effects of mycorrhizal inoculation on lentil (Lens culinaris L.) growth, nitrogen fixation and P nutrition were observed, along with reduced uptake of As in roots, shoots and pods. Decreased plant growth, nitrogen fixation, nutrient uptake, mycorrhizal infection and increased uptake of arsenic in root, shoot and pods were observed due to application of arsenate contaminated irrigation water. The use of a lux based bacterial biosensor test demonstrated that mycorrhizal inoculation reduced arsenic bioavailability in soil and that most of the toxicity was associated with the colloidal and fine particulate soil fraction. When rock phosphate was applied, an increase of P uptake only was observed. In contrast, superphosphate increased both P and As uptake and decreased mycorrhizal infection and activity. In summary, this thesis has shown that mycorrhizal inoculation appears to offer great potential as an effective tool contributing to crop management for technique in minimisation of the total intake of As by human and livestock. The observed decreased in uptake of As into pods of mycorrhizal lentil has particularly important potential implications for human health.
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Dallaire, Xavier. "Miniaturisation de lentilles grand angle." Doctoral thesis, Université Laval, 2018. http://hdl.handle.net/20.500.11794/28321.
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La miniaturisation des systèmes optiques, notamment des systèmes grand angle, est un sujet d’actualité qui revêt une grande importance. La réduction en taille des composantes optiques permet l’intégration de caméras dans une plus vaste gamme d’applications. Une amélioration constante des techniques de production ont permis jusqu’à présent de grandes avancées dans le domaine de la miniaturisation, mais aujourd’hui d’autres techniques doivent être développées dans le but de miniaturiser d’avantage. Le but de ce projet de doctorat est d’adapter et de développer des techniques de miniaturisation applicables à des systèmes optiques grand angle. À travers l’étude des diverses techniques de miniaturisation, la lentille repliée joint à l’imagerie à fovéa et la correction d’aberration via l’imagerie plénoptique ont été retenus comme candidats permettant la miniaturisation de caméra grand angle. Le Chapitre 3 dresse un portrait global des différentes avenues empruntées dans la littérature permettant la miniaturisation de système optique. Une courte description des techniques est présentée ainsi que les raisons pour lesquelles certaines furent écartées. Un design original d’endoscope miniature grand angle est présenté au Chapitre 4, de même que l’ensemble du processus de conception et de tolérancement. L’utilisation d’un repli dans le système permet de réduire la taille effective du système. L’utilisation de l’imagerie à fovéa est utilisée afin de contrôler le grandissement dans les régions d’intérêts. Deux versions de l’endoscope présentant des variations différentes de leur lfl sont analysées. Il est montré qu’un contrôle actif de la distorsion au moment du design peut permettre de maintenir les performances d’un système optique dans certaines régions clés du champ de vue tout en réduisant le nombre d’éléments qui le compose. Un algorithme de reprojection économe permettant de reconstruire une image plénoptique aberrée est présenté au Chapitre 5. Il est montré, à travers des simulations, qu’il est possible de corriger des aberrations présentes dans un système optique. Les cas monochromatiques, polychromatiques et grand angle furent abordés et corrigés avec succès. Il a aussi été démontré que l’algorithme de correction n’amplifiait pas le bruit présent dans les images d’origines. Finalement, un prototype simple de caméra plénoptique a été conçu et testé en laboratoire.The miniaturization of optical systems, particularly wide-angle systems, is a subject of great importance. The reduction in size of optical components allows the integration of cameras in a wider range of applications. Even though continuous improvements in production techniques have led to great advances in the field of miniaturization, new techniques have to be developed in order to further miniaturize. The aim of this PhD project is to adapt and develop miniaturization techniques applicable to wide-angle optical systems. Through the study of various miniaturization techniques, the folded lens joined to foveated imaging and the correction of aberration via plenoptic imaging were retained as candidates allowing the miniaturization of wide-angle camera. Chapitre 3 gives an overall picture of the various avenues used in the literature for the miniaturization of optical systems. A short description of the techniques is presented as well as the reasons why some were discarded. An original miniature wide-angle endoscope design is presented in Chapitre 4, as well as the entire design and tolerancing process. The use of a fold in the system reduces the effective size of the system. Foveated imaging is used to control magnification in areas of interest. Two versions of the endoscope with different variations of their lfl are analyzed. It is shown that active control of distortion at during design can maintain the performance of an optical system in certain key regions of the field of view while reducing the number of elements that compose it. A reprojection algorithm for reconstructing an aberrated plenoptic image is presented in Chapitre 5. It is shown, through simulations, that it is possible to correct aberrations present in an optical system. Monochromatic, polychromatic and wide angle cases were successfully addressed and corrected. It was also demonstrated that the correction algorithm do not amplify the noise present in the original image. Finally, a simple prototype of a plenoptic camera was designed and tested in the laboratory.
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MORITZ, SYLVIE. "Lentilles de contact et entretien." Strasbourg 1, 1987. http://www.theses.fr/1987STR10759.
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Sá, Jocelito Saccol de. "Influência do manejo do nível freático e doses de nitrogênio em culturas sob hipoxia no solo." Universidade de São Paulo, 2006. http://www.teses.usp.br/teses/disponiveis/11/11143/tde-10032006-164551/.
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Em diversos países, extensas áreas agrícolas são afetadas por inundações temporárias que ocasionam significativos prejuízos à produção de alimentos. Os objetivos deste trabalho foram: a) avaliar os efeitos da exposição de plantas de lentilha (Lens culinaris Medik) ao estresse por excesso hídrico em relação ao manejo do nível freático; b) avaliar o comportamento de cultivares de soja (Glycine max L. Merrill) a hipoxia e à aplicação de nitrogênio na atenuação dos danos ocasionados pelo excesso hídrico e c) avaliar as respostas de plantas de trigo (Triticum aestivum, L.) à saturação hídrica, total ou parcial, da camada de solo correspondente à zona radicular da cultura. Em plantas de lentilha, o excesso de água no solo reduziu a expansão foliar, o acúmulo de biomassa, a produção de grãos e reduziu a concentração de N, K, Ca, Mn e Mg nas folhas e intensificou o processo de senescência foliar. As taxas de ascensão e de rebaixamento do nível freático de 15 e 30 cm dia-1 influenciaram positivamente o desenvolvimento e a produção. Os danos mais drásticos foram ocasionados pela elevação e pelo rebaixamento do nível freático em 5 cm dia-1. O efeito negativo da inundação do solo na produção de grãos foi reduzido em 21% pelo aumento da taxa de ascensão e de rebaixamento do nível freático de 5 para 30 cm dia-1. A adição de 50 kg N ha-1 não minimizou os danos ocasionados pela hipoxia. Em soja, a área foliar, o acúmulo de matéria seca, a produção e a qualidade dos grãos dos cultivares decresceram com o prolongamento da inundação do solo. Os teores foliares de N, K, Mg e Mn decresceram linearmente e a concentração de Fe aumentou com a inundação do solo. O cultivar FT-Abyara apresentou maior crescimento vegetativo e o cultivar CD205 maior produtividade e maior teor protéico. Os maiores danos à produção foram ocasionados pela inundação do solo por período superior a 48 h. A aplicação de 50 e 100 kg N ha-1 aumentou o crescimento da parte aérea das plantas, a produção e a concentração de proteína dos grãos. O cultivar FT-Abyara apresentou melhores resultados à adição de N. A aplicação de N reduziu em 15% os danos causados pelo excesso de água no solo à produção de grãos. Em plantas de trigo, a saturação hídrica do solo intensificou a senescência das folhas, reduziu a produção de matéria seca, a taxa de crescimento da cultura e prejudicou a produção de grãos. Os efeitos ocasionados pela ocupação total dos poros do solo pela água foram mais severos para o desenvolvimento e a produção de grãos do que a saturação parcial dos poros pela água. O nível freático a 15 cm de profundidade minimizou em 30% os danos ocasionados pelo excesso de água no solo à produção de grãos. A aplicação de 50 kg N ha-1 reduziu em 16% os danos ocasionados pela saturação hídrica do solo à produção de grãos.In many countries, extensive agricultural areas are affected by short-term waterlogging that cause significant damages to the crop yields. The objectives of this work were: a) to evaluate the stress effect of the soil water excess on lentil plants (Lens culinaris Medik) related to water table management; b) to evaluate the behavior of soybean cultivars (Glycine max L. Merrill) to hypoxia conditions and to the nitrogen supplying for reducing flood damages c) to evaluate wheat (Triticum aestivum, L.) responses to complete or partial soil water saturation in the root zone. On lentil plants the excess of water reduced the growth of the leaves, the dry matter and grain production and the concentration of N, K, Ca, Mn and Mg in leaves. Also the senescence process was increased. The elevation and lowering by 15 and 30 cm day-1 affected positively the crop development and yield production. The most severe damage was induced by rate elevation of 5 cm day-1 and drawdown of water table. The increasing of water table ascension and lowering rate from 5 to 30 cm day-1 alleviated the damage effect on grain production in 21%. Hypoxia injuries were not minimized by a supplemental addition of 50 kg ha-1 of nitrogen. The leaves area, shoot dry matter accumulation, the grain production and the grain protein concentration of soybean plants were reduced proportionally to the flooding duration. The N, K, Mg and Mn concentration in leaves decreased linearly while Fe concentration increased for the waterlogging duration. The soybean cultivar FT-Abyara showed the higher vegetative growth, while CD205 produced a greater grain yield and grain protein concentration. A flooding period of 48 h caused severe damage to grain yield. The leaf area, shoot growth, grain yield and grain protein increased with supplemental N application of 50 and 100 kg N ha-1. The soybean cultivar FT-Abyara showed the best results due to the nitrogen supply. The N addition reduced the grain production damages by 15%. In wheat plants, the water excess increased leaves senescence, reduced dry matter and the growth rate and produced a significant decreasing on grain weight. The effects caused by total water saturation of soil pores were more severe to the plant growth and grain yield than those caused by partial water saturation, even for large periods. A water table at 15 cm depth minimized by 30% the harmful effects of water excess to the grain production. The application of 50 kg N ha-1 reduced by 16% the damages on the crop yield caused by flooding.
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Meunier-Guttin-Cluzel, Siegfried. "Caractérisations et modélisations des régimes chaotiques de la lentille thermique." Rouen, 1990. http://www.theses.fr/1990ROUES046.
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Quand un faisceau laser est absorbé par un liquide, celui-ci se comporte comme une lentille divergente. La lumière émergente produit, si elle est projetée sur un écran, une figure formée d'anneaux. Si le rayon traverse le liquide horizontalement et suffisamment près de la surface libre, la figure peut se déstabiliser. On observe alors des comportements variés allant du périodique au chaos en passant par la quasi-périodicité et le doublement de période. Un montage expérimental amélioré ainsi qu'une chaîne d'acquisition informatique ont été mis en place pour pouvoir étudier des signaux chaotiques. Plusieurs outils théoriques ont été élaborés pour caractériser les attracteurs attachés à ces signaux expérimentaux. En particulier, des programmes de calcul de spectres de dimensions et d'entropies généralisées à rayons fixes et a masses fixes ont été mis au point. Un attracteur de dimension 4 a ainsi été mis en évidence. Un modèle simple a été conçu à partir de considérations dimensionnelles et de la théorie de systèmes dynamiques. Celui-ci permet de retrouver la plupart des comportements observés dans les expériences
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Hamdi, Ahmed Hamdi Ismail Hamdi Ahmed. "Variation in lentil (Lens culinaris Medik) in response to irrigation." Thesis, Durham University, 1987. http://etheses.dur.ac.uk/6759/.
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This study aimed to investigate the response of lentil genotypes to different water regimes, providing guide lines, through partitioning the variation, for a selection program for adaptation to irrigated conditions. The research was divided into two main areas; 1) The overall variation in the crop was partitioned into genotypic, environmental and genotype-environmental components in an analysis of adaptation over seasons, irrigation regimes and locations; 2) The genotypic variation was partitioned into its various genetic components in an inheritance study using the dial lei mating system. Pronounced progress should be expected from selection for number of pods/plant, 100 seed weight and straw yield/plant traits, which showed high estimates of h(^2)(_b.s), C.G.V. and G.S. The two former traits correlated strongly and positively with seed yield, which allowed their use in indirect selection for seed yield. The 35 genotypes used in this study showed wide genetic diversity, allowing selection of high yielding genotypes under irrigation. Environmental variation in water supply, temperature and soil type was found to exert a profound effect on variation in characters measured. This suggests the possibility of raising yield levels through improved management practices. In this study, irrigation repeated twice increased seed yield by 19% over no irrigation, at the same location, and increased the yield by 300% in comparison with a dry location. Seed protein quality was influenced by environments and genotypes. Electrophoretic studies showed that the number and position of the bands could be used to identify genotypes. Four genotypes showed response to irrigation and could be recommended as promising entries. An anatomical study showed that large air spaces formed in the roots of a responsive genotype:, which could be used as a selection criterion for positive response to irrigation. Seed yield/plant exhibited 31.8% heterosis and showed a predominant role of non-additive genetic variance. Due to the significance of the non-additive effect, the superior F(_1)'s may be expected to throw out desirable transgressive segregants, provided that the complementary genes and epistatic effects included in the non-additive component are coupled in the same direction to maximize seed yield. Five F(_2) crosses showed superiority in seed yield and SCA effects. These crosses should be carried forward in lentil breeding programs.
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Chandra, A. "The genetic associations of rhegmatogenous retinal detachment and ectopia lentis." Thesis, University College London (University of London), 2014. http://discovery.ucl.ac.uk/1419863/.
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A genetic predisposition to Rhegmatogenous Retinal Detachment (RD) has been suggested for over 40 years. Ectopia Lentis (EL) is known to have a genetic aetiology as part of Marfan Syndrome, other ocular syndromes and when occurring in isolation. This work investigates the genetic aetiology to these conditions in Mendelian and non Mendelian inheritance. The work in this thesis establishes a clear genotype-phenotype correlation between isolated EL and its most important causative gene: ADAMTSL4. This suggests that mutations in this gene result in a more severe phenotype than other genes causing EL. In doing so, a novel clinical grading system for this condition has also been developed. The expression of ADAMTSL4 and distribution of its protein within ocular tissue has also been investigated and suggests further roles for this protein in ocular development. Modelling of the protein was undertaken and provides insights for future investigations. Traditional and novel next generation investigative tools have also been employed to examine families with Mendelian inherited phenotypes including RD and EL. The role of a deleted exon in ADAMTS17 has been identified as playing a role in Weill-Marchesani Like syndrome. A novel ocular phenotype has also been defined in three families demonstrated to be caused by mutations in ADAMTS1 8. This gene has previously been described in few probands with ophthalmic phenotypes, and this work has further delineated the role of this gene. It is becoming clear that members of the ADAMTS family of proteins play a significant role in ocular development. Finally, over 1300 probands with non-Mendelian RD were recruited and closely phenotyped as part of this work. It has demonstrated novel racial differences in the phenotypes of those affected. This cohort contributed significantly towards the first genome wide association study (GWAS) into RD; and established for the first time the genetic contribution to this condition. Further funding has now been acquired to investigate this cohort further using a novel exome array. Preliminary quality control analysis has been performed; allowing a platform for further detailed analysis to identify putative functional variants associated with RD.
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Halloin, Hubert. "CLAIRE: Premières Lumières d'une Lentille Gamma." Phd thesis, Université Paul Sabatier - Toulouse III, 2003. http://tel.archives-ouvertes.fr/tel-00342133.
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À l'extrémité du spectre électromagnétique observé, l'astrophysique gamma étudie les traces des phénomènes les plus violents de notre univers. Grâce aux instruments toujours plus perfectionnés, la recherche dans cette branche de l'astronomie est entrée dans un âge d'or, où les résultats quantitatifs et prédictifs ont succédé aux découvertes pionnières. Néanmoins, les techniques actuellement utilisées semblent avoir atteint leur limites avec la dernière génération de satellites d'observation. De nouveaux instruments gamma doivent donc être développés afin d'atteindre les résolutions angulaires et les sensibilités nécessaires à la confrontation des observations avec les prédictions théoriques. Afin de franchir cette nouvelle étape, la focalisation des rayonnements gamma offre une voie aujourd'hui prometteuse. Dans cette optique, le projet CLAIRE a pour objectif de démontrer la faisabilité d'une lentille gamma pour l'astrophysique nucléaire, ainsi que de quantifier les performances d'un tel instrument et les comparer aux principes théoriques.
À partir des lois de la diffraction des rayons dans les cristaux, une lentille a donc été développée et mise au point au CESR. Cette intrument, focalisant une bande énergétique de quelques keV centrée sur 170 keV, est constituée d'environ 560 cristaux de germanium disposés sur 8 anneaux concentriques, dont le réglage en laboratoire a nécessité la mise en place de procédures et systèmes spécifiques. D'autre part, les mesures récoltées lors de ce réglage ont permis de déterminer différents paramètres cristallins, servant ensuite d'initialisation aux simulations numériques.
La validité du principe de lentille gamma a alors été testée par des mesures au sol ainsi que par une observation effectuée sur la nébuleuse du Crabe sous ballon stratosphérique. Les mesures sol ont permis de déterminer l'efficacité de diffraction de la lentille ainsi que sa réponse hors axe. Ces résultats valident les principes à la base de la lentille gamma.
D'autre part, le 14 juin 2001, la lentille gamma a été embarquée sous ballon stratosphérique, à 41 km d'altitude. Suite au traitement des données, le signal diffracté a pu être mis en évidence avec un niveau de confiance de 3 sigmas, correspondant à une détection d'environ 33 photons pendant une observation effective d'1h12.
Les différentes expériences, tant au sol que pendant le vol stratosphérique, s'accordent sur une efficacité de 10% à 170 keV. Conformes aux prédictions, ces résultats valident le concept de lentille pour l'astrophysique et ouvrent la voie au développement d'un instrument spatial.
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Poulin-Girard, Anne-Sophie. "Banc de caractérisation pour lentilles panoramiques." Thesis, Université Laval, 2011. http://www.theses.ulaval.ca/2011/28212/28212.pdf.
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Filho, Bartholomeu AraÃjo Barros. "Estudo QuÃmico do Basidiomiceto Lentinus strigellus." Universidade Federal do CearÃ, 2009. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=4737.
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CoordenaÃÃo de AperfeiÃoamento de NÃvel SuperiorO estudo quÃmico do basidiomiceto Lentinus strigellus foi realizado atravÃs da investigaÃÃo da produÃÃo de metabÃlitos secundÃrios em diferentes meios de culturas, alÃm da sua utilizaÃÃo em processos de biorreduÃÃo de compostos carbonÃlicos prÃquirais (cetona e -cetoÃster). A partir de L. strigellus cultivado em meio de peptona foi possÃvel isolar os benzopiranos 2,2-dimetil-6-metoxicroman-4-ona, 4-hidroxi-2,2-dimetil-6-metoxicromano e (3R,4S)-3,4-dihidroxi-2,2-dimetil-6-metoxicromano do meio lÃquido. Do micÃlio, foram isolados o alcalÃide indÃlico echinulina e a antraquinona fisciona, ambos inÃditos para o gÃnero Lentinus. Do microrganismo cultivado em Czapek, enriquecido com caldo de batata, foram isolados do meio lÃquido os mesmos benzopiranos produzidos em peptona, alÃm de (3S,4S)-3,4-dihidroxi-2,2-dimetil-6-metoxicromano. Quando Czapek foi utilizado como meio de cultivo, foram isoladas a panepoxidona e a isopanepoxidona. CÃlulas em crescimento de L. strigellus em meio de batata-dextrose foram investigadas, pela primeira vez, na biorreduÃÃo estereoseletiva da acetofenona e nove derivados aromÃticos, alÃm das cetonas alifÃticas ciclo-hexilmetilcetona, octan-2-ona, undecan-2-ona e do -cetoÃster 4-cloroacetoacetato de metila. A maioria das cetonas aromÃticas foi convertida ao respectivo Ãlcool de configuraÃÃo S, em excessos enantiomÃricos superiores a 99%. Exceto para a undecan-2-ona, as cetonas alifÃticas foram reduzidas enzimaticamente ao Ãlcool de configuraÃÃo S em elevadas taxas de conversÃo e excessos enantiomÃricos. O -cetoÃster 4- cloroacetoacetato de metila foi quimiosseletivamente reduzido ao Ãlcool correspondente de configuraÃÃo R, mas com excesso enantiomÃrico moderado.
The chemical study of the basidiomicete Lentinus strigellus was done by the investigation of its secondary metabolites production in varied culture media, besides its utilization in the bioreduction of prochiral carbonyl compounds (ketone and - ketoester). From the liquid medium of L. strigellus grown in peptone broth, it was isolated the benzopyranes 2,2-dimethyl-6-methoxycroman-4-one, 4-hydroxy-2,2-dimethyl-6-methoxycromane and (3R,4S)-3,4-dihydroxy-2,2-dimethyl-6-methoxycromane . From the mycelium, the indol alkaloid echinuline and the antraquinone fiscione were isolated, both compounds reported for the first time in Lentinus. The same benzopyranes isolated from L. strigellus grown in peptone, besides (3S,4S)-3,4-dihydroxy-2,2-dimethyl-6-methoxycromane were isolated from the liquid medium of the microorganism grown in Czapek medium enriched with potato broth. When only Czapek was used as culture medium, panepoxidone and isopanepoxidone were isolated. Growing cells of L. strigellus in potato-dextrose medium were investigated, for the first time, in the stereoselective reduction of acetophenone and nine aromatic derivatives, besides the aliphatic ketones cyclohexylmethylketone, octan-2-one and undecan-2-one, and the -ketoester methyl 4-chloroacetoacetate. Most of the aromatic ketones were converted into the respective alcohols with S configuration in high enantiomeric excesses (> 99%). Except for undecan-2-one, the aliphatic ketones were enzimatically reduced to the alcohols with S configurations in high conversion ratios and enantiomeric excesses. -ketoester methyl 4-chloroacetoacetate was chemoselectivelly reduced to its corresponding alcohol with R configuration but with moderate ee.
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Mahnaoui, Larbi. "Lentilles cornéennes : produits d'entretien et d'application." Nantes, 1986. http://www.theses.fr/1986NANT431P.
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Rousseau, Brisard Mélanie George Marie-Noëlle. "Kératite microbienne sous lentilles de contact." [S.l.] : [s.n.], 2009. http://castore.univ-nantes.fr/castore/GetOAIRef?idDoc=56656.
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Barros, Filho Bartholomeu Araújo. "Estudo Químico do Basidiomiceto Lentinus strigellus." reponame:Repositório Institucional da UFC, 2009. http://www.repositorio.ufc.br/handle/riufc/11122.
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BARROS FILHO, B. A. Estudo Químico do Basidiomiceto Lentinus strigellus. 2009. 221 f. Tese (Doutorado em Química) - Centro de Ciências, Universidade Federal do Ceará, Fortaleza, 2009.Submitted by José Jairo Viana de Sousa (jairo@ufc.br) on 2014-10-17T17:57:12Z No. of bitstreams: 1 2009_tese_babfilho.pdf: 14011696 bytes, checksum: 801d46d1660bd251831ffd08d35f89ed (MD5)
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The chemical study of the basidiomicete Lentinus strigellus was done by the investigation of its secondary metabolites production in varied culture media, besides its utilization in the bioreduction of prochiral carbonyl compounds (ketone and - ketoester). From the liquid medium of L. strigellus grown in peptone broth, it was isolated the benzopyranes 2,2-dimethyl-6-methoxycroman-4-one, 4-hydroxy-2,2-dimethyl-6-methoxycromane and (3R,4S)-3,4-dihydroxy-2,2-dimethyl-6-methoxycromane . From the mycelium, the indol alkaloid echinuline and the antraquinone fiscione were isolated, both compounds reported for the first time in Lentinus. The same benzopyranes isolated from L. strigellus grown in peptone, besides (3S,4S)-3,4-dihydroxy-2,2-dimethyl-6-methoxycromane were isolated from the liquid medium of the microorganism grown in Czapek medium enriched with potato broth. When only Czapek was used as culture medium, panepoxidone and isopanepoxidone were isolated. Growing cells of L. strigellus in potato-dextrose medium were investigated, for the first time, in the stereoselective reduction of acetophenone and nine aromatic derivatives, besides the aliphatic ketones cyclohexylmethylketone, octan-2-one and undecan-2-one, and the -ketoester methyl 4-chloroacetoacetate. Most of the aromatic ketones were converted into the respective alcohols with S configuration in high enantiomeric excesses (> 99%). Except for undecan-2-one, the aliphatic ketones were enzimatically reduced to the alcohols with S configurations in high conversion ratios and enantiomeric excesses. -ketoester methyl 4-chloroacetoacetate was chemoselectivelly reduced to its corresponding alcohol with R configuration but with moderate ee.
O estudo químico do basidiomiceto Lentinus strigellus foi realizado através da investigação da produção de metabólitos secundários em diferentes meios de culturas, além da sua utilização em processos de biorredução de compostos carbonílicos próquirais (cetona e -cetoéster). A partir de L. strigellus cultivado em meio de peptona foi possível isolar os benzopiranos 2,2-dimetil-6-metoxicroman-4-ona, 4-hidroxi-2,2-dimetil-6-metoxicromano e (3R,4S)-3,4-dihidroxi-2,2-dimetil-6-metoxicromano do meio líquido. Do micélio, foram isolados o alcalóide indólico echinulina e a antraquinona fisciona, ambos inéditos para o gênero Lentinus. Do microrganismo cultivado em Czapek, enriquecido com caldo de batata, foram isolados do meio líquido os mesmos benzopiranos produzidos em peptona, além de (3S,4S)-3,4-dihidroxi-2,2-dimetil-6-metoxicromano. Quando Czapek foi utilizado como meio de cultivo, foram isoladas a panepoxidona e a isopanepoxidona. Células em crescimento de L. strigellus em meio de batata-dextrose foram investigadas, pela primeira vez, na biorredução estereoseletiva da acetofenona e nove derivados aromáticos, além das cetonas alifáticas ciclo-hexilmetilcetona, octan-2-ona, undecan-2-ona e do -cetoéster 4-cloroacetoacetato de metila. A maioria das cetonas aromáticas foi convertida ao respectivo álcool de configuração S, em excessos enantioméricos superiores a 99%. Exceto para a undecan-2-ona, as cetonas alifáticas foram reduzidas enzimaticamente ao álcool de configuração S em elevadas taxas de conversão e excessos enantioméricos. O -cetoéster 4- cloroacetoacetato de metila foi quimiosseletivamente reduzido ao álcool correspondente de configuração R, mas com excesso enantiomérico moderado.
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Quiniou, Florence. "Contaminations fongiques des lentilles de contact." Strasbourg 1, 1988. http://www.theses.fr/1988STR15086.
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Jarboui, Ahmed. "Etude de l'oxygénation de la cornée en présence d'un dispositif oculaire par des approches couplées de modélisation et d'expérimentations." Thesis, Montpellier, 2020. http://www.theses.fr/2020MONTG038.
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Ce travail de thèse présente une étude de l'oxygénation de la cornée en présence d'un dispositif oculaire (sensor). Ce dispositif vise à permettre la mesure en continu de la pression intraoculaire de façon à mieux anticiper l’apparition du glaucome. L’étude de l'oxygénation a été réalisée via des approches couplées de modélisation et d'expérimentations. L’outil expérimental développé dans ce travail, basé sur une méthode chrono-ampérométrique, a permis de mesurer la perméabilité à l’oxygène des matériaux de fabrication du sensor ainsi que la perméabilité globale du dispositif. Des mesures expérimentales de la variation de l’épaisseur cornéenne par OCT ont permis de montrer que le gonflement cornéen, provoqué principalement par un manque d’oxygénation, varie localement à la cornée. Pour expliquer cette hétérogénéité spatiale, un modèle mathématique de l’oxygénation de la cornée a été développé en géométrie 2D. Le modèle intègre la description des phénomènes de transfert de matière (transfert et diffusion de l’oxygène) et des réactions biochimiques au sein de la cornée par voies aérobie et anaérobie. Le modèle apermis d’identifier les points limitants de l’oxygénation de la cornée dans différentes conditions de port du sensor, en intégrant un décentrage potentiel, et pour différents designs du dispositif. En tant qu’outil prédictif, le modèle a également permis d’identifier des stratégies d’amélioration telle que la diminution de la surface du circuit, l’implémentation des canaux d’oxygénation ou l’augmentation de la perméabilité des matériaux de fabricationThis work presents a study of the cornea oxygenation in the presence of an ocular device (sensor). This device aims to allow continuous measurement of intraocular pressure in order to better anticipate the onset of glaucoma. The oxygenation study was carried out using coupled modeling and experimental approaches. The experimental apparatus developed in this work, based on a chronoamperometric method, enabled to measure the oxygen permeability of the materials used to manufacture the sensor as well as the overall device permeability. Experimental OCT measurements concerning the change in corneal thickness have shown that corneal swelling, caused mainly by a lack of oxygenation, varies locally at the cornea. To explain this spatial heterogeneity, a mathematical model of corneal oxygenation has been developed in 2D geometry. The model involves the description of mass transfer phenomena (oxygen transfer and diffusion) and biochemical reactions within the cornea by aerobic and anaerobic pathways. The model enabled to identify the limiting phenomena of cornea oxygenation under different conditions of sensor wearing, by integrating a potential decentering, and for different designs of the device. As a predictive tool, the model also identified improvement strategies such as reducing the surface area of the circuit, implementing oxygen channels or increasing the permeability of manufacturing materials
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LANCERINI, EMANUEL. "Territori lenti." Doctoral thesis, Università IUAV di Venezia, 2004. http://hdl.handle.net/11578/278493.
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Crook, D. G. "The introduction of autumn-sown lentil (Len culinaris) into arable cropping." Thesis, University of Reading, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.301928.
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