Dissertations / Theses on the topic 'TEGs'
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1
Lönn, Anders, and Tomas Nyberg. "Utbyte mellan Polishögskolan i Umeå och Tegs centralskola." Thesis, Umeå University, Basic training programme for Police Officers, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-27271.
Abstract:
Tegs central skola har tidigare varit en s.k. problemskola, men har numer ett mycket bättre rykte. Vi har fått antydningar om att det finns ett stort intresse från skolan och föräldrarna till eleverna, att polisen ska komma till skolan och informera ungdomarna om t.ex. alkohol/droger och mobbing. Tyvärr har polisen i dagens läge vare sig resurser eller tid att fullt ut tillmötesgå dessa önskemål. Tanken med vårt arbete är att skaffa oss en uppfattning om det är möjligt, och om intresse finns att starta ett förhoppningsvis långvarigt samarbete mellan Tegs central skola och polisutbildningen i Umeå. Vi vill ta reda på vilka problemområden som finns på skolan och i slutändan kunna presentera idéer om hur man tillsammans ska kunna arbeta för att minimera dessa problem. Arbetet kommer att visa på olika faktorer som ligger bakom ungdomars inträde i kriminaliteten, och även idéer om hur ett samarbete mellan skolorna skulle kunna se ut kommer att presenteras
2
Roepsch, Jodi Ann. "Characterizaton of Triethoxyfluorosilane and Tetraethoxysilane Based Aerogels." Thesis, University of North Texas, 2001. https://digital.library.unt.edu/ark:/67531/metadc2999/.
Abstract:
Aerogels are highly porous, low dielectric constant (low k) materials being considered by the semiconductor industry as an interlayer dielectric. Low k materials are needed to overcome capacitance problems that limit device feature sizes. Precursors triethoxyfluorosilane (TEFS) and tetraethoxysilane (TEOS) were used to prepare bulk aerogels. Samples were prepared by sol-gel methods, and then carbon dioxide supercritically-dried. Effects of varying the water to precursor ratio were studied with respect to aerogel properties and microstructure. Methods of analysis for this study include FTIR-ATR, TEM, RBS, EDS, SEM, dielectric constant determination by impedance and surface area by gas adsorption. Si-F bonds were determined to be present in both acid- and base-catalyzed TEFS as well as HF-catalyzed TEOS. Fluorine promotes a fractal network microstructure as opposed to a particle-like microstructure. Surface area and dielectric constant were determined to increase slightly with increases in the water to precursor ratio.
3
Hartman, Jennifer. "Alignment of Middle School Core TEKS with Visual Arts TEKS." Thesis, University of North Texas, 2010. https://digital.library.unt.edu/ark:/67531/metadc33160/.
Abstract:
This descriptive study uses a qualitative, content analysis to examine the middle school visual arts and core Texas Essential Knowledge and Skills (TEKS) to determine the potential common learning activities that can be aligned between the two. By performing an alignment of the potential common learning activities present in the middle school visual art TEKS and the middle school core TEKS, I demonstrate that there is a foundation for curriculum integration in the Texas middle school visual arts classroom.
4
Oulfarsi, Mostafa. "Contribution à l’amélioration de la fiabilité de modules thermoélectriques : développement de solutions matériaux alternatives." Electronic Thesis or Diss., Université de Lorraine, 2020. http://www.theses.fr/2020LORR0228.
Abstract:
La conversion d’énergie à partir de la chaleur perdue par effets thermoélectriques (effet Seebeck) est une nouvelle source d’énergie renouvelable potentielle. La technologie thermoélectrique (TE) est néanmoins limitée à des applications terrestres de niche du fait de son faible rendement (5-6 %), mais aussi à cause des défis technologiques à surmonter pour éviter une dégradation des générateurs TE (GTE) employés. Notre thèse s’inscrit dans cette problématique dans le cadre d'un programme de recherche soutenu par l’ANR (projet RELIATEG) incluant comme partenaires la société HotBlockOnBoard (HBOB), le CEA LITEN, le CIRIMAT et l'IJL. L'objectif est de fiabiliser les GTE à base de siliciures, Mg₂Si₁₋ₓSnₓ pour le type n et de MnSi₁₊ᵧ pour le type p, fabriqués par HBOB pour une utilisation à long terme au voisinage de 400-500°C. Notre rôle consiste principalement à comprendre les mécanismes conduisant à leur fragilisation, notamment en ce qui concerne les problèmes d'oxydation du matériau Mg₂Si₀,₆Sn₀,₄. Ceux-ci étant inévitables, nous nous sommes tournés vers la solution de trouver un revêtement protecteur et de tester la stabilité thermique sous air d’un matériau Mg₂Si₁₋ₓSnₓ, moins sensible. Après avoir établi une synthèse bibliographique traitant des notions de base de la TE, de l'état de l’art des matériaux TE et justifié le choix des matériaux utilisés par HBOB, nous présentons les diverses étapes de la fabrication des GTE et les techniques expérimentales utilisées pour caractériser la microstructure des matériaux TE et leur stabilité thermique. Les tests de performance réalisés sur des GTE à quatre jambes montrent que la puissance obtenue, mesurée jusqu'à 450°C, est reproductible pour les 25 modules testés. Elle est toutefois environ 25 % plus faible que celle que l'on pourrait atteindre avec un GTE parfait, comme le montre les simulations que nous avons réalisées à l'aide du logiciel Comsol MultiPhysics. Les tests de stabilité ont montré que les modules sont stables sous air à 250°C, durant 500 h ou sous 1000 cycles, et qu'ils commencent à se dégrader sous air dès 350°C par le biais d'un phénomène de peste lié à l'oxydation du matériau TE Mg₂Si₀,₆Sn₀,₄ du côté chaud du GTE. Sous vide, ce processus est ralenti mais la présence d'oxygène résiduel ne permet pas de totalement stabiliser le matériau. A 500°C sous air, la peste est observée dès 3 heures de test. Les tests d'oxydation menés sur les deux matériaux à teneur en Sn différente ont permis de montrer le rôle déterminant de l'étain sur les phénomènes d'oxydation. Un modèle expliquant le phénomène de peste a pu être développé grâce à l'analyse combinée des résultats obtenus par des mesures thermogravimétriques, microscopie électronique à balayage et diffraction des rayons X. En nous appuyant sur la bibliographie et sur les diagrammes de phases des différents systèmes, des revêtements protecteurs céramiques, siliciures métalliques, métaux et verres ont été étudiés. Plusieurs voies de dépôt ont été explorées : frittage par Spark Plasma Sintering, nickelage électrochimique, pack cémentation, dépôts par pulvérisation (slurry, PVD et spray). Les revêtements les plus prometteurs ont été obtenus avec un verre dont le CET est proche de celui du matériau de type nEnergy conversion from waste heat through thermoelectric effects (Seebeck effect) is a potential new renewable energy source. The thermoelectric (TE) technology is nevertheless limited to niche terrestrial applications due to its low efficiency (5-6%), but also due to the technological challenges to be overcome to avoid a degradation of the TE generators (TEG). Our thesis is devoted to this problem within the framework of a research program supported by the ANR (RELIATEG project) including HotBlockOnBoard (HBOB), CEA LITEN, CIRIMAT and IJL as partners. The objective is to make reliable the TEG, manufactured by HBOB, based on silicides, Mg₂Si₁₋ₓSnₓ (n-type) and MnSi₁₊ᵧ (p-type), for long-term use in the vicinity of 400-500°C. Our main role is to understand the mechanisms leading to their embrittlement, particularly to the oxidation problems linked to the Mg₂Si₀,₆Sn₀,₄ material. As they are unavoidable, we turned to the solutions of finding a protective coating and/or testing the thermal stability under air of a Mg₂Si₁₋ₓSnₓ material, less sensitive to oxidation. After a bibliographical synthesis of the basic concepts of TE and of the state of the art of TE materials, the choice of materials used by HBOB have been justified. The various stages of TEG manufacturing and the experimental techniques used to characterize the microstructure of TE materials and their thermal stability are presented. The performance tests performed on TEGs show that the power obtained, measured up to 450°C, is reproducible for the 25 devices tested. However, it is about 25% lower than what one could achieve with a perfect TEG, as shown by the simulations we carried out using the Comsol MultiPhysics software. The stability tests showed that the devices are stable under air at 250°C, for 500 hours or under 1000 cycles, and that they begin to degrade under air at 350°C through a pesting phenomenon linked to the oxidation of Mg₂Si₀,₆Sn₀,₄. Under vacuum, this process is slowed down but the presence of residual oxygen does not completely stabilize the material. At 500°C under air, the pesting is observed from 3 hours of testing. The oxidation tests carried out on the two materials with different Sn content showed the significant role of tin on the oxidation phenomena. A model explaining the pesting phenomenon was developed by the combined analyses of results obtained by thermogravimetric measurements, scanning electron microscopy and X-ray diffraction. On the basis of bibliography and phase diagrams of the differents systems, protective coatings based on ceramics, metallic silicides, metals and glasses have been studied. Several deposition methods were explored: sintering by Spark Plasma Sintering, electrochemical nickel plating, pack cementation, slurry, PVD and spray deposits. The most promising coatings were obtained with a glass whose CTE is close to that of the n-type material
5
Nakasēs, Athanasios. "O naos tēs Athēnas Makistu /." Athēna : Tameio Archaiologikōn Porōn kai Apallotriōseōn, 2004. http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&doc_number=014734171&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA.
6
Roper, Nick. "South Tees diabetes mortality study." Thesis, University of Newcastle upon Tyne, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.399543.
7
Tarnoff, David. "Episode 3.02 – Tens Complement Arithmetic." Digital Commons @ East Tennessee State University, 2020. https://dc.etsu.edu/computer-organization-design-oer/18.
Abstract:
In 1645, Blaise Pascal presented his Pascaline to the public. Using only addition and the method of tens complement, the device could add, subtract, multiply, and divide. We discuss tens complement as an introduction to signed representations in binary.
8
Ierokēpiōtēs, Kōstas G. "Ē ellēnikē ekpaideusē stēn eparchia Paphu (1878-1960) : symbolē stēn istoria tēs ekpaideusēs tēs Kypru /." Leukōsia : Politistikes Hypēresies Hypurgeiu Paideias kai Politismu, 2004. http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&doc_number=020301014&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA.
9
Campagne, Ibarcq Claudie. "Tels serviteurs, tels maîtres : la représentation des domestiques dans la peinture vénitienne de la Renaissance." Paris, EHESS, 2015. http://www.theses.fr/2015EHES0051.
Abstract:
Les peintures vénitiennes de la Renaissance contiennent de très nombreuses figures de domestiques, rarement remarquées par le spectateur. Leur recensement systématique et la constitution de séries ont permis de montrer que ces détails sont peu naturalistes et rarement décoratifs. Les figures de serviteurs relèvent le plus souvent d'un discours symbolique concernant souvent les maîtres, c'est-à-dire l'idée que les élites se font de leur place dans la société, en particulier durant la deuxième moitié du XVIe siècle, plus aristocratique. Mais les peintres peuvent aussi faire porter par ces figures des discours variés, politiques, littéraires, théologiques, voire artistiques ou satiriques. En effet, les serviteurs, figures du popolo, ont à Venise plus qu'ailleurs, droit de cité dans la représentation picturale, puisque le patriciat aime à considérer que les Vénitiens forment une communauté unie. L'étude systématique des domestiques de peinture a également conduit à réinterroger certaines œuvres bien connues, qui comportaient des figures de serviteurs faisant écart par rapport à la tradition ou à la 'norme' contemporaine. L'étude de ces dissonances a permis d'apporter un éclairage nouveau sur ces œuvres de Carpaccio, Titien, Tintoret et VéronèseRenaissance Venetian paintings include many servants, who often escape the notice of those who view them. A systematic statistical inventory of those servant figures and their grouping into different categories have made it obvious that those figures are hardly ever realistic or decorative but are most of the time an integral part of a symbolic system focusing on their masters' place in society and of the elite's conception of its social role, in particular during the more aristocratic second half of the sixteenth century. On the other hand, servant figures may be used to express views on varied subjects, either literary, theological or political, or even with an artistic or satirical goal in mind. Indeed, servants, figures of the popolo, have a legitimate place in pictorial representation in a city such as Venice where the Patricians like to think of the community as united. The systematic study of servants in painting has also led to a new questioning of well-known works when they include servant figures which differ from traditional or contemporary norms. The study of those discrepancies has shed a new light on those works by Carpaccio, Titian, Tintoretto and Veronese
10
Frangelakis, Fotios. "Controlling and upscaling laser induced surface morphology : from tens of microns to tens of nanometres." Thesis, Bordeaux, 2019. http://www.theses.fr/2019BORD0021/document.
Abstract:
L’Industrie actuelle demande des produits à haute valeur ajoutée offrant des nouvelles fonctions à moindre coût. Parmi les fonctions on peut citer la coloration de surface, le noircissement de surface, la réduction des frottements, la génération de surface anti-réflexion, anti-bactérienne, superhydrophobe ou anti-formation de glace. Les surfaces fonctionnelles présentes dans la nature nous indiquent que ces propriétés uniques sont possibles par des texturations de surface à l’échelle micro et nanométrique adéquates.Parallèlement à cela, la technologie laser révolutionne le champ des possibles en termes de texturation de surface et permet de reproduire ces fonctions inspirées du monde du vivant en modifiant la morphologie et la chimie de surface. Néanmoins, le développement et le déploiement de telles techniques de texturation laser au niveau industriel nécessite la levée de trois verrous. Le premier est de connecter les propriétés macroscopiques (couleur, résistance mécanique, stabilité chimique, vieillissement) et la morphologie de surface aux échelles nano et microscopiques. Le second d’acquérir une parfaite maîtrise de la morphologie de surface à ces échelles. Le troisième est la transposition du procédé développé en laboratoire en procédé industriel adapté aux traitements de grandes surfaces avec des temps de cycles les plus courts possibles. Nous avons étudié plusieurs techniques de texturation de surface à l’échelle submicronique par laser femtoseconde. Ainsi des « ripples » de quelques dizaines de nanomètres ont être réalisées par laser UV. L’irradiation avec double impulsion apporte une capacité supplémentaire dans le contrôle de la morphologie de surface finale. Différents types de structures, avec différentes symétries, ont ainsi été produites en jouant sur le délai entre les deux impulsions. Des structures LIPSS homogènes triangulaires ou carrées ont été obtenues pour des délais inférieurs à 5 ps et 500 ps respectivement. Des paramètres opératoires, en particulier la fluence et la polarisation, ont été identifiés comme jouant un rôle majeur dans les caractéristiques de la morphologie de surface finale. Des expériences complémentaires ont montré que des résultats similaires peuvent être obtenus en utilisant des cristaux biréfringents pour générer des délais courts. Nous avons également exploré la possibilité d’utiliser des trains d’impulsions uniques pour produire des texturations de surface de dimensions caractéristiques supérieures allant de quelques microns à plusieurs dizaines de microns en faisant varier de manière systématique la fluence, la dose énergétique et le taux de répétition du laser. La comparaison de résultats expérimentaux avec ceux issus de simulation nous avons mis en évidence le rôle majeur de l’accumulation thermique sur les dimensions caractéristiques des structures générées par laser. Par ailleurs, nous avons démontré la capacité du procédé à produire de texturations sub-longueurs d’onde, homogènes, sur des surfaces supérieures à 1 cm², avec des lasers ayant des taux de répétitions allant jusqu’à 10 MHz et des systèmes de positionnement innovants. Des nano-rugosités de surface ainsi produites affichent des propriétés de super hydrophobicité. A titre d’exemple, nous avons atteint un temps de texturation de l’ordre de 1 min/cm², soit 60 fois inférieurs à ce que nous obtenions en début des travaux. Enfin, nous avons démontré un temps de 9 s/cm² pour le noircissement de surface.Ces travaux de recherche, mettant à profit des sources laser et des équipements de déflection optique de dernière génération, apportent une contribution significative dans la compréhension des mécanismes d’une part, et dans la capacité à contrôler et à produire de telles texturations sur des grandes surfaces d’autre part. Ils devraient favoriser une dissémination rapide de ces technologies de texturation laser dans l’industrieCurrent industrial markets demand highly value-added products offering new features at a low-cost. Among the most desired functionalities are surface colouring and blackening, anti-icing, anti-biofouling, wear reduction and anti-reflectivity. Laser surface processing holds a virtually endless potential in surface functionalization since it can generate versatile surface properties by modifying surface morphology and chemistry. Nevertheless, developing functional surfaces for implementation in the industry requires action on three levels. The first is to connect the macro-scale surface properties (colour, mechanical resistance, chemical stability, ageing) and the micro & nano-scale morphology. The second is to increase the level of control over the laser induced morphology in the near micron and submicron scale. The third is to upscale the lab-developed process both in terms of processed area and cycle time. Functional textures found in nature can be used as a guideline for connecting the surface texture with the surface property. It is well established that different textures can enable different functionalities. Nevertheless, the level of control of the laser induced morphology has to be improved significantly in order to allow one to mimic nature’s examples. Increase of control requires an in-deep understanding of the physical mechanisms that lead to nanostructure formation. To this end, we carry out a comprehensive parametric study of fs processing on stainless steel. The impact of wavelength, overlap, fluence, dose, repetition rate, polarization and interpulse delay in the induced morphology was investigated.We investigate several techniques to achieve controlled laser structuring in the submicron regime. Ripples of a few tens of nanometres were obtained with a UV laser. Double pulses were employed to further control the submicron structures. Structures of different size and symmetry were obtained in different delays underlining the key role of the interpulse delay (Δτ). Homogeneous triangular and square 2D-LIPSS were obtained for Δτ smaller than 5 ps and 500 ps, respectively. Process parameters and particularly fluence and polarization were found to play also a role in the laser induced feature characteristics. In a complementary set of experiments, we show that similar results can be obtained for small delays with a robust setup of birefringent crystals. In the above micron regime, trains of single pulses were employed for controlling the surface morphology. Fluence, dose and repetition rate, were varied to show a systematic variation of spikes in the range of tens of micrometers. Combining our experimental results with simulation data we underline the key role of heat accumulation on the structures size. Finally, we proposed an upscaling strategy showing the possibility to exploit repetition rates up to 10 MHz for laser texturing.In the upscaling part, areas much larger than the spot size were textured homogenously using high repetition rate laser and innovative laser positioning systems. Nanometric ripples induced by UV laser act as a subwavelength grating. Laser induced nano roughness exhibits superhydrophobic properties. Uniform distribution of well-defined, sub-wavelength, 2D-LIPSS was successfully generated over ~1 cm2. The final surface exhibits multiple axis iridescence giving a holographic effect. Employing a 10 MHz laser surface was textured at a rate of ~ 1 min/cm2 almost 60 times faster compared to our starting point. Lastly, surface blackening was achieved at a rate of ~ 9 sec/cm2.In conclusion, valuable data were provided both in surface functionalization, in understanding and controlling of laser induced structuring and in upscaling a lab developed process. We believe that our results open the way for exploiting fs laser texturing in everyday applications employing up to date laser sources and positioning systems
11
Francis, Richard Paul. "The Hypoalgesic Effects of Acupuncture-Like Transcutaneous Electrical Nerve stimulation (AL-TENS) Compared to Conventional TENS." Thesis, Leeds Beckett University, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.491234.
Abstract:
Introduction: Transcutaneous electrical nerve stimulation (TENS) is used to reduce pain. TENS is applied as conventional TENS (50-100 Hz, causing paraesthesia) or acupuncture-like TENS (AL-TENS). AL-TENS is inconsistently characterised and research comparing its hypoalgesic effects to conventional TENS is lacking. Aim: To compare the hypoalgesic effects of acupuncture-like transcutaneous electrical nerve stimulation (AL-TENS) and conventional TENS.
12
Yanez, Darlene Ann. "Implementing state-initiated reform : mathematics TEKS /." Full text (PDF) from UMI/Dissertation Abstracts International, 2001. http://wwwlib.umi.com/cr/utexas/fullcit?p3008477.
13
Horsley, David James. "Large-diameter large-ratio hot tap tees." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/tape17/PQDD_0009/MQ31321.pdf.
14
Fuchs, Julia Friederike. "Q-Tess als möglicher Indikator des Prostatakarzinoms? /." Inhaltsverzeichnis, 2007. http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&doc_number=016969672&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA.
15
Nelson, Tracy Jane. "Identifying sediment sources in the Tees catchment." Thesis, Durham University, 2003. http://etheses.dur.ac.uk/3684/.
Abstract:
The main objective of this research is to identify the sources of suspended sediments in the River Tees. Earlier work in the Tees has focused on the extent of heavy metal concentrations in the river sediments as a result of mining m the upper catchment, but this is the first time that an attempt has been made to fingerprint the sources of suspended sediment. The idea of identifying sediment sources by fingerprinting was similar to that used by other authors, i.e. attempting to determine a distinctive chemical fingerprint for the different landuse, geology or subcatchments in the Tees. Field sediment samples were collected from potential source areas throughout the catchment and suspended sediment samples were collected from strategic points on the River Tees and its main tributaries. The samples were prepared using a sequential extraction procedure before analysis by ICP-AES. The samples were then subjected to several statistical procedures to determine which metals could classify the samples between the different source groups. Principal Components Analysis was the most successful tool for allowing interpretation of different sediment sources, identifying three possible sources for sedmient. These were the upstream bed and bank sediments, samples collected from the Leven catchment and the third source, which appeared to be the middle catchment agricultural areas. The data was subjected to a two-stage statistical analysis, as used by previous authors, but the data failed to provide a reliable fingerprint for use in a mixing model. Water samples collected along with suspended sediment showed distinct differences between the upper catchment and the lower tributaries, with samples from the lower Tees showing a degree of mixing. An attempt to use a mixing model failed, possibly owing to the small number of samples.
16
Lorden, Mack F. "The Localization of Chinese Teas in America." The Ohio State University, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=osu1429324160.
17
Kalous, Jiří. "Ocenění společnosti TESS CZ spol. s r.o." Master's thesis, Vysoká škola ekonomická v Praze, 2017. http://www.nusl.cz/ntk/nusl-360156.
Abstract:
The aim of this thesis is to estimate an objectified value of the company TESS CZ spol. s r.o. for the company management and owners to the date of 31. 12. 2015. After the introduction part, the theoretical-methodological part comes, which concerns terminology connected with the valuation issue and also offers recommended procedure and possible methods of a company valuation. In the practical part, after the company introduction, application of the particular methods, mentioned in the theoretical part, is realized. It is about strategic and financial analysis, analysis and forecast of value generators, creating of a financial plan and the valuation itself. The final valuation is made by yield method of discounted cash flow in the variant of FCFE.
18
Kim, Youngmok. "Factors influencing antioxidant phytochemical stability of teas." [College Station, Tex. : Texas A&M University, 2008. http://hdl.handle.net/1969.1/ETD-TAMU-3172.
19
Manteiga, Raquel 1963. "Toxic and mutagenic potentials of herbal teas." Thesis, The University of Arizona, 1991. http://hdl.handle.net/10150/292011.
Abstract:
Three commercially available herbal tea preparations (Weightless, Female Toner, and PMS) and one single ingredient herbal preparation, Chaparral (Larrea tridentata), were sequentially extracted with solvents of decreasing polarity (water, methanol and chloroform) and the crude extracts obtained screened for toxic/mutagenic potentials using the brine shrimp (Artemia sp.), mouse acute toxicity, Salmonella/microsomal mutagenicity, and chicken embryo bioassays. The crude aqueous extract from Weightless Tea was very toxic to brine shrimp larvae and had a cathartic action in mice at the highest concentration tested. While Weightless tea crude water extract was not mutagenic to Salmonella typhimurium TA100 at the concentrations tested, three chromatographic isolates obtained from a silica Gel 60 column were mutagenic to the test organism. Two of these isolates were detoxified after inclusion of a microsomal activation system. The teratogenic potentials of these isolates are unknown as the results obtained from the chicken embryo bioassay were not conclusive.
20
NISKA, JOANNA. "TERMINATING REPLICATION AT TERS AT EUKARYOTIC CHROMOSOMES." Doctoral thesis, Università degli Studi di Milano, 2014. http://hdl.handle.net/2434/234148.
Abstract:
Faithful transmission of genetic material is challenged by the presence of natural impediments affecting replication fork progression that jeopardize genome integrity. Transcription, which competes with DNA replication for the same template, is a common barrier to replication in both prokaryotes and higher eukaryotes. Multiple mechanisms minimize the consequences of DNA replication and transcription collisions in order to prevent torsional stress accumulation that occurs when replication fork encounters the transcription machinery. Defects in resolving topological problems during chromosome replication lead to fork reversal, R loop formation and recombination-induced genome rearrangements. Our interest is focused on the processes that coordinate replication with transcription at TERs (termination sites) and on the molecular pathways involved in termination of DNA replication. We investigated the roles of Rrm3, a DNA helicase that assists replication fork progression, and of Sen1, a DNA/RNA helicase that resolves the conflicts between replication and transcription. We found that Rrm3 and Sen1 mediate replication termination at specific TERs, preventing aberrant events ultimately leading to chromosome fragility. Our results contribute to the elucidation of mechanisms coordinating replication and transcription at TER zones in eukaryotes.
21
Turki, Adnan Jaman. "An investigation of metal partitioning and organic pollution in surface sediments from Tees Bay and the Tees Estuary, UK." Thesis, University of Newcastle Upon Tyne, 1998. http://hdl.handle.net/10443/416.
Abstract:
Concern about the possible contamination by metals, hydrocarbons and PCBs of Tees Bay and the Tees estuary, and potential sources of such materials has led to this study of surficial sediments. Surface sediment samples were collected from the Tees estuary and Tees Bay and were analysed for grain size, organic carbon content, metals, hydrocarbons (aliphatic and polyaromatic) and polychiorinated biphenyls (PCB5). The Tees estuary sediments are largely organic-rich clayey-silts, while the Bay sediments are organic-poor sands. All of the metals measured (Cd, Co, Cr, Cu, Ni, Pb and Zn) have significantly higher concentrations in the sediments of the Tees estuary than in those of Tees Bay (F<0.01), and the mean averages decrease in the order Zn > Pb> Cr> Cu > Ni > Co> Cd. These significantly higher concentrations remain apparent when the data are normalized to remove the effect of grain size variation, suggesting that the sediments of the Tees estuary are enriched in metals in comparison with the sediments of Tees Bay and that these differences are not the result of the different grain size distributions. Metal partitioning was determined by sequential extraction, using the scheme of Tessier et al. (1979) as recently modified by Ajayi and Van Loon (1989), in order to assess the likely behaviour of metals in the sediments studied. The results of the sequential extraction showed that the partitioning patterns of Cd, Cr, Cu and Zn differed between the marine and estuarine sediments. In the Tees Bay sediments the residual fraction hosted >50% of all of the metals, except Cd and Pb. In the Tees estuary, however, this fraction only accounted for >50% of the Cd, Co and Ni. Significant portions of Cd are contained in fractions 1 and 2 in both the Tees estuary sediments and those from Tees Bay. Because of the toxicity and availability of Cd this may pose a serious problem to the ecosystem. The total Pb in the sediments is also quite high, particularly in the Tees estuary, and even the small proportion in fraction 2 could cause deleterious effects. High concentrations of Cd and Pd, in Tees Bay and the Tees estuary sediments, and Cr and Zn, in Tees estuary sediments, were associated with fraction 3. Concern is directed to heavy metals associated with fraction 3 because changing environmental conditions can transfer these elements from the sediments into the aqueous phase. Cu was the only metal significantly associated with fraction 4. This fraction is likely to have an important role as a sink for trace metals, particularly for Cu and to a lesser extent Cr and Zn. Petroleum hydrocarbons, both aliphatic and polyaromatic (PAHs), were detected and quantified in all samples. The distributions of the n-alkanes, acyclic isoprenoids (especially pristane from coal), triterpanes and steranes, in most sediments from both areas, were indicative of pollution by fossil fuels. On the other hand, a few sediments from the estuary contain hydrocarbons from both biogenic and anthropogenic sources. Polyaromatic hydrocarbon assemblages observed in the samples were relatively rich in hydrocarbons having petrogenic origins. However, the presence of pyrolytic derived components was also indicated by several characteristic component composition ratios. Single PCB congeners were determined in the sediments studied. The PCB profile is fairly constant in sediments from both areas and similar to that of Aroclor 1260 and 1254. The similarity to the commercial mixtures, with only a slight enrichment of the lighter congeners, indicates that sources responsible for PCB pollution are located in the Tees area. The sediments of the Tees estuary tend to be more highly polluted, by metals, hydrocarbons and PCBs, than those of the Bay, particularly in the middle section of the estuary. However, there is a general decrease in the concentrations of these compounds from the middle to the mouth of the estuary, while within the Bay area offshore sites showed higher concentrations. Distributions of inorganic and organic constituents in the Tees Bay were significantly influenced by the organic carbon content and particle size of sediments.
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Celander, Tomas, and Chalak Muhyadin. "Icke-farmakologiska behandlingsmetoder mot postoperativt illamående och kräkning : Systematisk litteraturstudie." Thesis, Högskolan i Gävle, Avdelningen för vårdvetenskap, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-32404.
Abstract:
Bakgrund Postoperative Nausea and Vomiting (PONV) är utöver smärta bland de vanligaste biverkningarna för patienter som genomgår anestesi i det postoperativa förloppet. Individuella riskfaktorer för PONV anses vara kvinnligt kön följt av tidigare historia av åksjuka, att vara icke-rökare och användning av postoperativa opioider. Förutom ökat vårdlidande och ökat vårdbehov är PONV associerad med ökad risk för aspiration, och försämrad sårläkning och längre sjukhusvistelse. Syfte Syftet med litteraturstudien var att beskriva vilka effekter som framkommit för de icke- farmakologiska behandlingsmetoderna akupunktur, akupressur och transkutan elektrisk nervstimulering, mot postoperativt illamående och kräkningar hos vuxna. Metod Systematisk litteraturstudie med beskrivande design valdes för att sammanställa resultat av relevant litteratur från tidigare studier gjorda inom problemområdet. Sökning av vetenskapliga artiklar gjordes i databasen PubMed. Efter urval och kvalitetsgranskning inkluderades 12 studier i resultatet. Granskning av de inkluderade artiklarnas kvalitet genomfördes utifrån rekommendationerna från Joanna Briggs Checklist for Randomized control trails. Huvudresultat Flera av de inkluderade studierna visade att de icke-farmakologiska behandlingsmetoderna akupunktur, akupressur och TENS hade signifikanta positiva effekter mot PONV, det första postoperativa dygnet hos framförallt kvinnor under 50 år. Slutsats Utifrån de vetenskapliga artiklarna som har inkluderats i denna litteraturstudie, har det framkommit att de icke-farmakologiska behandlingsmetoderna akupunktur, akupressur och TENS har positiva effekter mot PONV hos framförallt kvinnor. Studien kan bidra till ökad förståelse för icke-farmakologiska behandlingsmetoder mot PONV. Därför bör icke-farmakologiska behandlingsmetoder betraktas som ett komplement till sedvanlig behandling mot PONV till patienter som genomgår anestesi i det postoperativa
23
Howitt, Anthony. "The formal specification of the Tees Confidentiality Model." Thesis, Teesside University, 2008. http://hdl.handle.net/10149/112674.
Abstract:
This thesis reports an investigation into authorisation models, as used in identity and access management. It proposes new versions of an authorisation model, the Tees Confidentiality Model (TCM), and presents formal specifications in B, and verifications and implementations of the key concepts using Spec Explorer, Spec# and LinQ. After introducing the concepts of authorisation and formal models, a formal methods specification in B of Role Based Access Control (RBAC) is presented. The concepts in RBAC have heavily influenced authorisation over the last two decades, and most of the research has been with their continued development. A complete re-working of the ANSI RBAC Standard is developed in B, which highlights errors and deficiencies in the ANSI Standard and confirms that B is a suitable method for the specification of access control. A formal specification of the TCM in B is then developed. The TCM supports authorisation by multiple concepts, with no extra emphasis given to Role (as in RBAC). The conceptual framework of Reference Model and Functional Specification used in the ANSI RBAC Standard is used to structure the TCM formal model. Several improvements to the original TCM are present in the formal specification, notably a simplified treatment of collections. This new variation is called TCM2, to distinguish it from the original model. Following this, a further B formal specification of a TCM reduced to its essential fundamental components (referred to as TCM3) was produced. Spec Explorer was used to animate this specification, and as a step towards implementation An implementation of TCM3 using LinQ and SQL is then presented, and the original motivating healthcare scenario is used as an illustration. Finally, classes to implement the versions of the TCM models developed in the thesis are designed and implemented. These classes enable the TCM to be implemented in any authorisation scenario. Throughout the thesis, model explorations, animations, and implementations are illustrated by SQL, C# and Spec# code fragments. These illustrate the correspondence of the B specification to the model design and implementation, and the effectiveness of using formal specification to provide robust code.
24
Eccles, Lee H., and Charles H. Jones. "IEEE P1451.0 CORE TEDS AND COMMON COMMAND SET." International Foundation for Telemetering, 2004. http://hdl.handle.net/10150/605792.
Abstract:
International Telemetering Conference Proceedings / October 18-21, 2004 / Town & Country Resort, San Diego, CaliforniaThe Technical Committee 9 (TC-9) of the Institute of Electrical and Electronics Engineers (IEEE) Instrument and Measurement Society wants to ensure that all members of the IEEE 1451 family of standards conform to a common set of basic functionality and have, at some level, a common interface. To this end, the IEEE p1451.0 working group has been chartered to prepare an overarching standard that will define the operation of the other members of the family while still leaving the physical interface up to the various other standards working groups. The IEEE p1451.0 will define the general functionality required of an IEEE 1451 transducer, a common command set that is appropriate to all family members, and the core set of transducer electronic data sheets (TEDS). This paper gives a brief overview of the overall functionality and follows that with a description of the commands and the TEDS.
25
Fischer, Deivis Alexandre. "Educa??o e sensibilidade : tens?es e desafios." Pontif?cia Universidade Cat?lica do Rio Grande do Sul, 2015. http://tede2.pucrs.br/tede2/handle/tede/3818.
Abstract:
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Previous issue date: 2015-01-14This dissertation addresses the investigation of the meaning of sensitivity in the contemporary world and its implications for the field of education, identifying two sources of tension and two challenges. The way in which sensitivity has been considered in western culture has oscillated between devaluation and exacerbation, which has resulted in the importance of aesthetics in every field of life and culture. The tensions and challenges identified for education are not new, but appear powerfully in the contemporary world. The research is philosophical research that tried to identify how the authors have addressed this issue, and how it affects the field of education. To understand the current characteristics that refer to the sensitivity dimension in an incisive manner, we primarily used the works of Wolfgang Welsch, Christoph T?rcke and Michel Lacroix. The two tensions the tension between reason and sensitivity and between routine and spectacle and the two challenges the approach toward corporeity and of feelings and emotions are not restrictive for education and can contribute to the widening of the interpretive horizon. Finally, the aesthetic experience is presented as a way to access sensitivity and care as an expression of a sensitive ethos.
Esta disserta??o trata da investiga??o acerca do sentido da sensibilidade na contemporaneidade e suas implica??es para o campo da educa??o, identificando duas tens?es e dois desafios. O modo como se considerou a sensibilidade na cultura ocidental oscilou de uma desvaloriza??o a uma exacerba??o, o que resultou em uma import?ncia da est?tica em todos os campos da vida e da cultura. As tens?es e desafios identificados para a educa??o n?o s?o novos, mas aparecem com for?a contemporaneamente. A pesquisa realizada ? de natureza filos?fica, em que se procura identificar como os autores v?m trabalhando com esse tema e suas implica??es para a educa??o. Para a compreens?o de caracter?sticas atuais que se referem, de uma maneira incisiva, ? dimens?o da sensibilidade, utilizam-se concep??es de Wolfgang Welsch, Christoph T?rcke e Michel Lacroix. As duas tens?es a tens?o entre raz?o e sensibilidade, e entre rotina e espet?culo -, e os dois desafios a abordagem da corporeidade e dos sentimentos e emo??es - para a educa??o n?o s?o restritivos, e podem abrir outras perspectivas, contribuindo no alargamento do horizonte interpretativo. Por fim, apresenta-se a experi?ncia est?tica como possibilidade de acesso ? sensibilidade e o cuidado como express?o de um ethos sens?vel.
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Husby, Bjørn Kobberrød. "Simulation of TEG dehydration plants." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for energi- og prosessteknikk, 2014. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-26081.
Abstract:
The purpose of natural gas dehydration is to prevent condensation of water in production units and transport pipelines. Liquid water can cause severe problems such as corrosion and hydrate formation. The aim of this thesis is to evaluate various models used for simulation of triethylene glycol (TEG) dehydration plants by comparing simulation calculations to experimental and field data. Three different simulation tools are included in the evaluation: Pro/II (V9.1), Hysys (V8.3) and ProMax (V3.2). In Pro/II, the glycol package is applied for the simulations. Four different fluid packages are included in Hysys: Glycol Package (GP), Peng-Robinson (PR) and two versions of the Cubic-Plus-Association-model (CPA) developed at Technical University of Denmark (DTU, V3.8) and Statoil (NeqSim). Soave-Redlich-Kwong (SRK) and PR are included in ProMax. Statoil provided field data from Gullfaks A (March 2012) as a comparison for the simulation calculations. The dehydration unit on Gullfaks A utilizes an absorption process which consists of a contactor, a regenerator with condenser and reboiler, and a separate stripping column. TEG is used as absorbent. Relevant experimental data is also gathered and compared with the calculations done by the simulation tools. The thesis focuses on parameters relevant for gas dehydration: wet gas water content, dry gas water dew point, rich TEG composition, reboiler duty, lean TEG purity and TEG loss. Hysys CPA NeqSim proved to be the best suited fluid package for dehydration of natural gas using TEG as an absorbent. This fluid package provided results in good agreement with both experimental and field data for all relevant parameters. ProMax SRK and ProMax PR also provided accurate results, and only minor deviations were found such as a slightly high lean TEG purity. Both packages are well suited for dehydration of natural gas, and the simulations showed no significant difference between the two packages. Heating of TEG was shown to count for roughly 65 % of the calculated reboiler duty. Other heat consumptions were primarily related to evaporation of water (25 %). Pro/II and Hysys CPA DTU provided low reboiler duties. This was related to low calculated heat capacities of TEG. This was the only serious flaw discovered in Pro/II, making it better suited than both Hysys GP and Hysys PR, which provided inaccurate results for respectively wet gas water content and dry gas water dew point.The wet gas water content calculated by Hysys GP was 9 – 14 % lower than the field data. This was expected due to low calculated water content in methane. The low water content in wet gas in Hysys GP had a slight influence on the dry gas water dew point, reducing it by roughly 4 %. For the composition and flow rate of lean TEG given in the field data, the calculated dry gas water dew point was shown to be primarily dependent on the calculated water content in the vapor phase in equilibrium with TEG. Hysys CPA DTU provided consistently very low water dew points, while Hysys PR calculated values higher than both experimental and field data.Gases are soluble in TEG. This thesis studied the solubility of methane, ethane and CO2 in rich TEG. Hysys GP calculated the lowest solubility of these components in rich TEG and the largest solubility in binary simulations with TEG. These opposing results were shown to be related to the water content in rich TEG which decreased the solubility of especially methane and ethane significantly. No data were available as a comparison. However, considering the relatively low water content in rich TEG, the decrease was too large.The lean TEG purity from the reboiler was shown to be primarily dependent on the state of equilibrium between TEG and water. Hysys CPA DTU calculated a higher amount of water in the liquid phase, leading to lower purity from both reboiler and stripping column compared to the other fluid packages. The purity from the stripping column was lower than the measured value. In addition, Hysys CPA DTU calculated low circulation rate of TEG due to low TEG density. Consequently, Hysys CPA DTU was evaluated as the least suited fluid package for dehydration of natural gas of those included in this thesis.
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Grandini, Camila Pereira. "Obten??o de extratos vol?teis e n?o vol?teis de Pluchea sagittalis (Lam.) Cabrera (Quitoco) : processos e an?lises." Pontif?cia Universidade Cat?lica do Rio Grande do Sul, 2017. http://tede2.pucrs.br/tede2/handle/tede/7473.
Abstract:
Submitted by Caroline Xavier (caroline.xavier@pucrs.br) on 2017-06-30T17:35:25Z
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Conselho Nacional de Pesquisa e Desenvolvimento Cient?fico e Tecnol?gico - CNPq
The growing concern of industries in finding natural inputs in place of synthetic ones in the production of bioactive products in the pharmaceutical, food and cosmetic areas motivated this research to the study of the biological activities of the volatile and non-volatile extracts of Pluchea sagittalis. This plant known as quitoco of spontaneous growth in nature is found in tropical regions having its origin in the South American continent. The goal of this study was to obtain volatile and nonvolatile extracts from the aerial parts of the quitoco and to evaluate the chemical composition and the biological activities of the extracts obtained. In order to obtain extracts from leaf and stem samples of P. sagittalis, without flowers and flower samples, two processes were used: Extraction by steam drag, to obtain volatile extracts, and supercritical extraction, to obtain non-volatile extracts. The chemical composition of the extracts obtained by steam drag was analyzed by gas chromatography coupled with mass spectrometer. The antimicrobial activity of leaf and stem essential oil was tested with the bacteria Staphylococcus aureus and Escherichia coli and also with the fungus Candida albicans, both tests were performed using the indirect bioautography technique where the oil showed growth inhibition for Staphylococcus aureus and for the fungus Candida albicans. Volatile extracts of leaves and stems and flowers obtained by steam extraction and supercritical fluid at 90 bar pressure were evaluated for their aromatic potential by means of sensorial (olfatometric) analysis, having as best evaluation the extract obtained by supercritical extraction of quitoco flowers.
A crescente preocupa??o de ind?strias em encontrarem insumos naturais em substitui??o aos sint?ticos na produ??o de produtos bioativos nas ?reas farmac?utica, aliment?cia e cosm?tica motivou esta pesquisa quanto ao estudo das atividades biol?gicas dos extratos vol?teis e n?o vol?teis da Pluchea sagittalis. Esta planta conhecida como quitoco, de crescimento espont?neo, ? encontrada em regi?es tropicais tendo sua origem no continente sul-americano. O objetivo deste estudo consistiu em obter extratos vol?teis e n?o vol?teis das partes a?reas do quitoco e avaliar a composi??o qu?mica e as atividades biol?gicas dos extratos obtidos. Para a obten??o dos extratos a partir de amostras das folhas e talos da P. sagittalis, sem as flores, e amostras de flores foram utilizados dois processos: extra??o por arraste a vapor, para a obten??o de extratos vol?teis, e extra??o supercr?tica, para a obten??o de extratos vol?teis e n?o vol?teis. A composi??o qu?mica dos extratos obtidos por arraste a vapor foi determinada atrav?s da an?lise por cromatografia gasosa acoplada com espectr?metro de massa. A atividade antimicrobiana do ?leo essencial das folhas e talos foi testada com as bact?rias Staphylococcus aureus e Escherichia coli e tamb?m com o fungo Candida albicans, ambos os testes foram realizados atrav?s da t?cnica bioautografia indireta, onde o ?leo essencial apresentou inibi??o do crescimento para Staphylococcus aureus e para o fungo Candida albicans. Os extratos vol?teis das folhas e talos e das flores, obtidos atrav?s da extra??o por arraste a vapor e com fluido supercr?tico a 90 bar de press?o, foram avaliados quanto ao seu potencial arom?tico por meio de an?lise sensorial (olfatom?trica), tendo o extrato vol?til das flores obtido por extra??o supercr?tica um grande potencial para o uso em perfumaria.
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Alexis, Peter S. "Millstones and milestones of the Mill City the Greek Orthodox experience in Lowell, Massachusetts /." Online full text .pdf document, available to Fuller patrons only, 2002. http://www.tren.com.
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Santos, Alan Henrique Ribeiro dos. "Sensor para detec??o de varia??o de tens?o para redes de baixa tens?o utilizando redes sem fio IEEE 802.11." Pontif?cia Universidade Cat?lica de Campinas, 2016. http://tede.bibliotecadigital.puc-campinas.edu.br:8080/jspui/handle/tede/887.
Abstract:
Submitted by Fernanda Ciolfi (fernanda.ciolfi@puc-campinas.edu.br) on 2016-08-11T18:46:02Z
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Alan Henrique Ribeiro dos Santos.pdf: 3411627 bytes, checksum: 9502463608d158f97139964de31fc083 (MD5)Made available in DSpace on 2016-08-11T18:46:02Z (GMT). No. of bitstreams: 1 Alan Henrique Ribeiro dos Santos.pdf: 3411627 bytes, checksum: 9502463608d158f97139964de31fc083 (MD5) Previous issue date: 2016-06-24
The increasing technological advances will allow a transformation in the electricity sector, until then, little changed since its implementation, however, this scenario has changed mainly by power generation growth through renewable matrices. The concept Smart Grid has provided significant changes mainly in the basic distribution networks with the inclusion of Information and Communication Technology (ICT), enabling monitoring and control of the grid, but effective and even allowing for the integration of Generation, Transmission and Distribution Power. The utilization of intelligent sensors and automation and control devices will also enable reduction of errors in decision making caused by human error, yet very common in the industry. The quality of electricity supply is currently topic extensively explored and of great importance to the utilities that are concerned with improving the quality of the product delivered to their consumers. This work aims to develop a sensor of long and short duration voltage variation, these are phenomena that are present in the electricity networks and affect the power supply to both industrial customers and to residential consumers, yet it is of great importance that devices intelligent be developed to integrate the distribution network for the generation of data, the main objective is to develop a low-cost sensor for identification and records of these phenomena. To communicate with the supervisory system, the sensors use a wireless telecommunications infrastructure, IEEE 802.11, based on urban Wi-Fi technology, this way the data is sent to a monitoring station reporting any faults captured by the sensors.
O crescente avan?o tecnol?gico permitir? uma transforma??o no setor el?trico, at? ent?o pouco modificado desde a sua implanta??o, no entanto, este cen?rio tem se modificado principalmente pelo crescimento da gera??o de energia atrav?s de matrizes renov?veis. O conceito Smart Grid tem propiciado grandes modifica??es principalmente nas redes de distribui??o b?sica com a inser??o de Tecnologia da Informa??o e Comunica??o (TIC), possibilitando monitoramento e controle mais efetivos da rede el?trica, e at? mesmo possibilitando a integra??o entre a Gera??o, Transmiss?o e Distribui??o de energia. A utiliza??o de sensores inteligentes e dispositivos de automa??o e controle ainda permitir? a redu??o de erros em tomadas de decis?o causadas por falhas humanas, ainda muito comuns no setor. A qualidade do fornecimento de energia el?trica ? t?pico atualmente bastante explorado e de grande import?ncia para as concession?rias que est?o preocupadas em melhorar a qualidade do produto entregue a seus consumidores. Este trabalho tem como objetivo desenvolver um sensor de varia??o de tens?o para redes de baixa tens?o utilizando redes sem fio WI-FI 802.11, estes, s?o fen?menos que est?o presentes nas redes el?tricas e afetam o fornecimento de energia tanto a consumidores industriais como a consumidores residenciais, contudo ? de grande import?ncia que dispositivos inteligentes sejam desenvolvidos de forma a integrar-se ? rede de distribui??o para a coleta de dados. O principal objetivo ? desenvolver um sensor de baixo custo para identifica??o e registros destes fen?menos. Para comunicar-se com o sistema supervis?rio, os sensores utilizar?o uma estrutura de telecomunica??es sem fio, IEEE 802.11, baseado em tecnologia Wi-Fi urbana, desta forma os dados ser?o enviados a uma Central de Monitoramento informando eventuais falhas captadas pelos sensores.
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Dube, Phumuzile. "The antimicrobial and associated antioxidant activity of rooibos (aspalathus linearis) and honeybush (cyclopia intermedia) herbal teas." Thesis, Cape Peninsula University of Technology, 2015. http://hdl.handle.net/20.500.11838/2236.
Abstract:
Thesis (MTech (Biomedical Technology))--Cape Peninsula University of Technology, 2015.The increase in antibiotic resistant bacterial and fungal infections and the prevalence of oxidative stress-related conditions including cancers, cardiovascular diseases and diabetes has led to a consensus among pharmaceutical companies, clinicians and researchers that novel antimicrobial and antioxidant approaches are needed. These should be ideally efficacious, non toxic, easily accessible and affordable. There has been an increased interest in the identification of medicinal plants that possess both these bioactivities in an intrinsically related manner, allowing the simultaneous prevention of these ailments. Two South African herbal teas, rooibos and honeybush have been associated with a long history of medicinal use, hence their consideration for the current study. Numerous studies have been performed to evaluate the antioxidant activities of these South African herbal teas, however limited information about their antimicrobial activity currently exists.
National Research Foundation
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Mpampiniōtēs, Geōrgios. "Geōrgiu D. Mpampiniōtē Mikro Lexiko tēs Neas Ellēnikēs Glōssas." Athēna : Kentro Lexikologias, 2009. http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&doc_number=018802503&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA.
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Tevs, Art [Verfasser], and Hans-Peter [Akademischer Betreuer] Seidel. "Deformable shape matching / Art Tevs. Betreuer: Hans-Peter Seidel." Saarbrücken : Saarländische Universitäts- und Landesbibliothek, 2012. http://d-nb.info/1051586615/34.
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Trevino-Anderson, Monika Raquel. "Mastery of sixth grade TEKS objectives through integrated learning." Texas A&M University, 2004. http://hdl.handle.net/1969.1/1413.
Abstract:
The purpose of this study was to assess learning in sixth grade students by gain
scores in science and mathematics while participating in the integrative curriculum
modules developed by the Partnership for Environmental Education and Rural Health
(PEER) Program. The PEER Program is a collaboration between the College of
Education and Applied Sciences, and the College of Veterinary Medicine at Texas A&M
University.
Two Integrated Curricular Modules provided the experimental treatment in this
study. The alliance of the PEER Program and Texas A&M University has developed a
middle school integrated curriculum based on sixth grade mathematics, science, English,
reading and social studies TEKS (Texas Essential Knowledge and Skills)-based
objectives. This multimedia curriculum incorporates the five disciplines into an
adventure narrative featuring characters similar in dynamics to its targeted population,
with problem-solving activities aimed to spark learning interests of students and
emphasize skill development.
Integrated learning allows students an alternative method to traditional or
conventional ways of learning by conceptualizing the subject matter into more than one
medium. Selected students who participated in this study were pre-tested with Texas
Assessment of Knowledge and Skills (TAKS)-related instrumentation based on TEKS
objectives. Their scores were recorded and some students were then selected to
participate as the treatment group where they were taught the PEER Programs
integrated curriculum, patterned to correspond to TEKS objectives. Post-tests were
administered to both groups, and gain scores were collected to evaluate and determine if
there was evidence that the PEER Program was successful in improving the mastery of
the TEKS objectives in mathematics and science.
Results varied in this study with findings that supported the notions that the
integrated PEER experimental modules had a positive, negative, and no effect on the
experimental populations compared to the control, or untreated population. It is
inconclusive to whether the integrated modules were effective in raising and improving
test scores based on the preparatory curriculum. Inconsistencies in the results from this
study imply that further research is needed.
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Tews, Rory [Verfasser]. "Social entrepreneurship in Germany: A Bourdieuan perspective / Rory Tews." Bielefeld : Universitätsbibliothek Bielefeld, 2015. http://d-nb.info/1080129863/34.
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Garcia, Welington Luis Codinhoto [UNESP]. "Teds-easy - descrição automática de transducer electronic data sheet." Universidade Estadual Paulista (UNESP), 2014. http://hdl.handle.net/11449/111113.
Abstract:
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000800354.pdf: 2158636 bytes, checksum: 30cb8216f1fbaa6275408b282df9f779 (MD5)Neste trabalho, apresenta-se uma ferramenta para descrição automática de TEDS (Transducer Electronic Data Sheet), facilitando a configuração de transdutores em uma rede de sensores inteligentes de acordo com o padrão IEEE 1451. As TEDS são tabelas virtuais definidas no padrão IEEE 1451, que contém a descrição dos transdutores. No desenvolvimento desta ferramenta, denominada de TEDS-EASY, utilizou-se a linguagem de programação web JSP (Java Server Pages) e sistema de banco de dados PostGreeSQL. Utilizou-se também a UML (Unified Modeling Language) para realizar a modelagem do projeto. Foram realizados testes com o sistema TEDS-EASY, a fim de validar as TEDS geradas por meio de descrições manuais e descrições encontradas na literatura, comparando com a descrição obtida ao utilizar a ferramenta de descrição de TEDS apresentada neste trabalho
This work presents a tool for automatic description of TEDS (Transducer Electronic Data Sheet), facilitating the configuration of transducers on a network of smart sensors according to the IEEE 1451 standard.'s TEDS are virtual tables defined in the IEEE 1451 standard containing the description of the transducers. In developing this tool called TEDS-EASY used the language of web programming JSP (Java Server Pages) and database system PostgreSQL database. We also used the UML (Unified Modeling Language) to perform the modeling project. Tests with TEDS-EASY system were performed in order to validate the TEDS generated through manual descriptions and descriptions found in the literature, comparing with the description obtained when using the tool for describing TEDS show in this project
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Shariatmadar, Hashem. "Seismic response of connections in precast concrete double-tees." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp02/NQ30386.pdf.
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Böhme, René, Msau Mkandawire, Udo Krause-Buchholz, Petra Rösch, Gerhard Rödel, Jürgen Popp, and Volker Deckert. "Characterizing cytochrome c states – TERS studies of whole mitochondria." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2014. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-138679.
Abstract:
Protein structures (cytochrome c) were visualized by TERS measurements on whole mitochondria referring to specific spectral features describing the electronic state of the heme moietyDieser Beitrag ist mit Zustimmung des Rechteinhabers aufgrund einer (DFG-geförderten) Allianz- bzw. Nationallizenz frei zugänglich
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Garcia, Welington Luis Codinhoto. "Teds-easy - descrição automática de transducer electronic data sheet /." Ilha Solteira, 2014. http://hdl.handle.net/11449/111113.
Abstract:
Orientador: Alexandre César Rodrigues da SilvaCo-orientador: Tércio Alberto dos Santos Filho
Banca: Erica Regina Marani Daruichi Machado
Banca: Dalton Matsuo Tavares
Resumo: Neste trabalho, apresenta-se uma ferramenta para descrição automática de TEDS (Transducer Electronic Data Sheet), facilitando a configuração de transdutores em uma rede de sensores inteligentes de acordo com o padrão IEEE 1451. As TEDS são tabelas virtuais definidas no padrão IEEE 1451, que contém a descrição dos transdutores. No desenvolvimento desta ferramenta, denominada de TEDS-EASY, utilizou-se a linguagem de programação web JSP (Java Server Pages) e sistema de banco de dados PostGreeSQL. Utilizou-se também a UML (Unified Modeling Language) para realizar a modelagem do projeto. Foram realizados testes com o sistema TEDS-EASY, a fim de validar as TEDS geradas por meio de descrições manuais e descrições encontradas na literatura, comparando com a descrição obtida ao utilizar a ferramenta de descrição de TEDS apresentada neste trabalho
Abstract: This work presents a tool for automatic description of TEDS (Transducer Electronic Data Sheet), facilitating the configuration of transducers on a network of smart sensors according to the IEEE 1451 standard.'s TEDS are virtual tables defined in the IEEE 1451 standard containing the description of the transducers. In developing this tool called TEDS-EASY used the language of web programming JSP (Java Server Pages) and database system PostgreSQL database. We also used the UML (Unified Modeling Language) to perform the modeling project. Tests with TEDS-EASY system were performed in order to validate the TEDS generated through manual descriptions and descriptions found in the literature, comparing with the description obtained when using the tool for describing TEDS show in this project
Mestre
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Böhme, René, Msau Mkandawire, Udo Krause-Buchholz, Petra Rösch, Gerhard Rödel, Jürgen Popp, and Volker Deckert. "Characterizing cytochrome c states – TERS studies of whole mitochondria." Royal Society of Chemistry, 2011. https://tud.qucosa.de/id/qucosa%3A27770.
Abstract:
Protein structures (cytochrome c) were visualized by TERS measurements on whole mitochondria referring to specific spectral features describing the electronic state of the heme moiety.Dieser Beitrag ist mit Zustimmung des Rechteinhabers aufgrund einer (DFG-geförderten) Allianz- bzw. Nationallizenz frei zugänglich.
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Olsson, Louise, and Maja Thurén. "Smärtlindring vid fibromyalgi. Har TENS och akupunktur någon effekt?" Thesis, Malmö universitet, Fakulteten för hälsa och samhälle (HS), 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:mau:diva-26445.
Abstract:
Bakgrund: Fibromyalgi är en kronisk sjukdom där smärta är en stor del av sjukdomen. 3-5% av världens befolkning beräknas vara drabbade av sjukdomen. Sjuksköterskan ska i omvårdnaden hjälpa patienten att återfå eller förbättra sin hälsa. Smärtlindring är en del av denna process. Det finns inget läkemedel som botar sjukdomen, behandlingen är inriktad på att lindra symtomen. Idag vänder sig många patienter till alternativa behandlingsmetoder för att bli smärtlindrande. Syfte: Att undersöka om TENS och/eller akupunktur har smärtlindrande effekt vid fibromyalgi. Ger någon av metoderna en sänkning på VAS? Är minskningen större vid någon av metoderna?Metod: Studien utfördes som en litteraturstudie med kvantitativ ansats. Resultatet byggde på 11 artiklar som fanns på databaserna CINAHL och Pubmed. Artiklarna granskades och kvaliteten bedömdes med hjälp av en anpassad kvalitetsmall. Resultat: Åtta artiklar handlade om akupunktur och tre om TENS. Studien visade att akupunktur och TENS hade en viss sänkning på VAS. Sänkningen varierade beroende på interventionens längd och var inte signifikant efter 12 veckor. Sänkningen var inte alltid signifikant. Konklusion: Akupunktur hade en större sänkning på VAS än TENS. Det fanns fler artiklar som handlade om akupunktur och fler personer var med i studierna än TENS. Detta bidrar till att sjuksköterskan inte kan rekommendera akupunktur över TENS på grund av att det inte fanns lika många artiklar.Background: Fibromyalgia is a chronic, widespread disease which mostly revolves around pain. 3-5 % of the world population is estimated to be suffering from the disease. The nurse’s mission is to help patients to recover and to improve their health. Pain relief is a vital part of this process. Since the disease has no cure, the treatment is instead focused to ease the symptoms. There are many patients that seek pain relief from non-pharmaceutical treatments. Aim: To study if TENS and/or acupuncture have pain relieving effects in patients suffering from fibromyalgia. Do any of the methods a reduction on VAS? Do any of the methods have a larger reduction?Method: The study was a quantitative literature review. 11 articles were found on literature databases (e.g. PubMed and CINAHL). The quality and nature of these articles were assessed through a template. Result: Eight of the chosen articles regarded acupuncture as a treatment option and the rest regarded TENS. The study showed that both acupuncture and TENS caused a reduction on the VAS. The decrease was dependent on the duration of the treatment and was proven to be nonsignificant if treated longer than 12 weeks.Conclusion: Acupuncture caused a larger reduction on the VAS than TENS. Though more articles regarding acupuncture as a treatment were used and these studies were performed on larger populations than the studies regarding TENS. Thus, the nurse may not recommend acupuncture over TENS as a treatment option for fibromyalgia.
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Mackenzie, Leonore. "Feministiese vertelstrategieë in 'n metafiksionele teks van Jeanne Goosen." Thesis, Rhodes University, 1991. http://hdl.handle.net/10962/d1002100.
Abstract:
Die roman Ons is nie almal so nie (1990) deur Jeanne Goosen word aangebied in 'n realistiese (oftewel tradisionele) vertelvorm. Feministiese vakkundigheid verwys na die narratiewe tipe as patriargaal of fallosentries. As sodanig, is daar 'n ingrypende verskil tussen die vertelwyse van hierdie teks en die van die outeur se vroeere tekste. Hierdie verskuiwing dien as stimulus vir 'n evaluasie van bogenoemde teks binne 'n raamwerk van die feministiese literere teorie en kritiek. Genoemde verskuiwing beteken ook 'n behoefte na 'n ondersoek van die feministiese literatuur en vakkunde in verhouding tot die heersende manlike "stem" van tradisionele redevoering. Dit word beklemtoon dat elkeen van die feministiese teoretiese standpunte die onvoorwaardelike politieke doelstellings van alle feministiese tekste aan die lig bring. Daar word onder andere te kenne gegee dat patriargale mag nie net op persoonlike vlak voorkom nie, maar ook op die vlak van instellings en sosiale gebruike. Patriargale beheer is dus nie 'n onveranderliknatuurlike gegewe nie; dit is vatbaar vir teoretiese analise en praktiese wysiging. Vanwee die feministiese literere teoriee se preokkupasie met patriargale mag, word hierdie teoriee dikwels gekritiseer as synde onbetrokke by strydvrae ten opsigte van rassisme en klasseverdeling. Dit word erken dat die feministiese literere kritiek die geskil met betrekking tot seksisme moet transendeer; dat die toekoms van die feministiese literere teoriee gelee is in 'n deurdringende gesprekvoering met materialisme. Dit is die uitdruklike doelstelling van die marxisties-feministiese kritiese standpunt om rekening te hou, nie net met vraagpunte ten opsigte van taal en "gender" nie, maar ook van klas en ras. Goosen se teks is besonder ontvanklik vir 'n ondersoek van hierdie verwante probleme. * * * The novel Ons is nie almal so nie (1990) by Jeanne Goosen is presented in a realistic (or traditional) narrative form. In feminist terms this narrative form is referred to as patriarchal or phallocentric. As such, the text differs radically from the narrative mode in which the author's previous texts are presented. This shift invites an assessment of the text within a framework of feminist theory and criticism. Moreover, it indicates the need for an investigation into the relationship of feminist literature and scholarship to the dominant male voice of traditional discourse. It is stressed that each of the feminist theoretical positions reveals the unreservedly political purpose of all feminist writing. It is further suggested that patriarchal power exists in institutions and social practices, not merely in individual intentions. Patriarchal power is therefore not a part of immutable nature, but open to effective theoretical analyses and practical change. Due to their preoccupation with patriarchal power, feminist literary theories are often criticised as being blind to issues of race and/or class. It is recognised that feminist literary theory must transcend the issue of sexism; that its future lies in a far more articulated dialogue with materialism. The express purpose of the marxist-feminist critical position is to take into account questions not only of language and gender, but also of class and race. Goosen's text is particularly receptive to an exploration of these interrelated problems.
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Young, Margaret Mary. ""Tess of the d'Urbervilles": A Pure Woman Faithfully Defended." W&M ScholarWorks, 1991. https://scholarworks.wm.edu/etd/1539625675.
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Shen, Miao Yu. "Study on geographical indication protection of teas in China." Thesis, University of Macau, 2018. http://umaclib3.umac.mo/record=b3952236.
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MANTHOPOULOU, ELENI-EVANGELIA. "RICERCA DI ESOPIANETI IN ASSOCIAZIONI STELLARI DA DATI TESS." Doctoral thesis, Università degli studi di Padova, 2022. http://hdl.handle.net/11577/3449036.
Abstract:
For the predominant part of exoplanet's hosts the age is not well constrained and consequently planet properties, demographics, and occurrence rates have been widely unmapped as a function of time. Discovering exoplanets in stellar associations can shed light on these topics as they provide the opportunity to investigate planet formation and evolution in environments with well-defined age. Moreover, for the members of stellar associations we can define with high accuracy their stellar properties and consequently characterize a potential exoplanet around them more efficiently in comparison with field stars. The Full-Frame Images (FFIs) of Transiting Exoplanet Survey Satellite (TESS) offer a huge data mining archive of millions of targets to investigate. We have analyzed the light curves of ~ 12000 stars belonging in 40 young associations and moving groups with ages spanning from 1 to 680 Myr. Our targets have been monitored during the primary mission of TESS (July 2018 -- July 2020) from Sector 1 to 26. We have extracted the light curves of young association's members from the FFIs, corrected the systematic errors that affected them, accounted for stellar variability, performed transit simulations to probe the detection efficiency of our technique to discover different types of transiting exoplanets, and estimate their frequency. We report the detection of 24 candidate exoplanets in our sample. Eighteen of our candidates are novel discoveries. Our candidate planets belong in 10 different young stellar associations with ages between 10 and 50 Myr and have been validated through a series of vetting tests (odd/even, secondary transit depth, etc). We also measured the frequencies of candidate planets in stellar associations for different orbital periods and planetary radii, taking into consideration the detection efficiency of our technique and the false positive probabilities of our candidates. Furthermore, we exploited the Stellar Age -- Planet radius distribution of known candidates and confirmed exoplanets with well measured ages and orbital periods less than 100 days. Giant (RP ≥ 11.2 R⊕) and small (RP < 3.9 R⊕) size planets do not show any peculiar trend on their distribution, whereas the distribution of planets in the radius regime of 4 R⊕ ≤ RP ≤ 10 R⊕ have attracted a lot of interest within the exoplanet community. These planets are concentrated at ages less than 100 Myr and it is still unclear why there are no detections of planets with this size orbiting older stars. Various scenarios (i.e atmospheric escape, core-powered mass loss, dynamical evolution etc) have been proposed to explain this behavior but until today no secure conclusions have been made. Consequently, increasing the candidate and eventually confirmed exoplanets around young stars we can take significant steps towards the understanding of the evolution and formation mechanisms that prevail in the early stages of an exoplanet's life which are still into debate among the exoplanet community.For the predominant part of exoplanet's hosts the age is not well constrained and consequently planet properties, demographics, and occurrence rates have been widely unmapped as a function of time. Discovering exoplanets in stellar associations can shed light on these topics as they provide the opportunity to investigate planet formation and evolution in environments with well-defined age. Moreover, for the members of stellar associations we can define with high accuracy their stellar properties and consequently characterize a potential exoplanet around them more efficiently in comparison with field stars. The Full-Frame Images (FFIs) of Transiting Exoplanet Survey Satellite (TESS) offer a huge data mining archive of millions of targets to investigate. We have analyzed the light curves of ~ 12000 stars belonging in 40 young associations and moving groups with ages spanning from 1 to 680 Myr. Our targets have been monitored during the primary mission of TESS (July 2018 -- July 2020) from Sector 1 to 26. We have extracted the light curves of young association's members from the FFIs, corrected the systematic errors that affected them, accounted for stellar variability, performed transit simulations to probe the detection efficiency of our technique to discover different types of transiting exoplanets, and estimate their frequency. We report the detection of 24 candidate exoplanets in our sample. Eighteen of our candidates are novel discoveries. Our candidate planets belong in 10 different young stellar associations with ages between 10 and 50 Myr and have been validated through a series of vetting tests (odd/even, secondary transit depth, etc). We also measured the frequencies of candidate planets in stellar associations for different orbital periods and planetary radii, taking into consideration the detection efficiency of our technique and the false positive probabilities of our candidates. Furthermore, we exploited the Stellar Age -- Planet radius distribution of known candidates and confirmed exoplanets with well measured ages and orbital periods less than 100 days. Giant (RP ≥ 11.2 R⊕) and small (RP < 3.9 R⊕) size planets do not show any peculiar trend on their distribution, whereas the distribution of planets in the radius regime of 4 R⊕ ≤ RP ≤ 10 R⊕ have attracted a lot of interest within the exoplanet community. These planets are concentrated at ages less than 100 Myr and it is still unclear why there are no detections of planets with this size orbiting older stars. Various scenarios (i.e atmospheric escape, core-powered mass loss, dynamical evolution etc) have been proposed to explain this behavior but until today no secure conclusions have been made. Consequently, increasing the candidate and eventually confirmed exoplanets around young stars we can take significant steps towards the understanding of the evolution and formation mechanisms that prevail in the early stages of an exoplanet's life which are still into debate among the exoplanet community.
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Wähner, Michael. "Klinische Studie zum Vergleich des schmerztherapeutischen Effektes von Mikroreizstrom-Therapie versus Placebo bei schmerzhafter diabetischer Neuropathie." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2012. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-90086.
Abstract:
Diabetes mellitus und seine Folgeerkrankungen haben aufgrund der hohen Prävalenz in der Bevölkerung eine starke medizinsche Relevanz. Dabei stellen die durch eine diabetische Neuropathie ausgelösten Schmerzen ein Herausforderung in der Schmerztherapie dar. Die Behandlung dieser Schmerzen mit TENS ist eine oft angewendete Therapieoption, welche jedoch in ihrer Wirksamkeit nicht ausreichend evidenzbasiert gesichert ist, da es methodenbedingt bei klinischen Studien zur Wirksamkeit der TENS-Therapie oft Zweifel an einer ausreichenden Verblindung gibt. Die vorliegende Studie untersuchte deshalb Mikro-TENS als Therapiealternative zur TENS-Behandlung im Rahmen einer einfach verblindeten, placebokontrollierten, klinischen Studie mit 41 Patienten. Die Placebokontrolle ist bei der Anwendung von Mikroreizstrom möglich, weil dieser unterhalb der Wahrnehmungsschwelle für sensible Nervenfasern liegt. Damit können die Patienten nicht zwischen MENS-Therapie und Placebo-Therapie unterscheiden.
Die Diabetespatienten wurden über 4 Wochen in insgesamt 12 Sitzungen à 30 Minuten mit Mikro-TENS am distalen Fuß beidseits behandelt. Als Messgrößen dienten der PDI, der NPS, der ADS und die durchschnittliche Schmerzintensität auf einer numerischen Ratingskala von 0 bis 10. Diese Variablen wurden jeweils zu Beginn der Studie, direkt am letzten Behandlungstag und einen Monat nach der letzten Behandlung erhoben.
Der PDI Score zeigte nach vierwöchiger Therapie eine durchschnittliche absolute Reduktion von 4,27 \\pm 4,17 in der Verum- und 3,79 \\pm 7,71 in der Placebogruppe. Eine mindestens 30 %ige Verbesserung des NPS- und PDI-Scores wurde als Ansprechen auf die Therapie gewertet. Insgesamt konnte bei circa 30 % der 40 Studienteilnehmer eine Therapieresponse festgestellt werden. Laut NPS sprachen nach vier Wochen Reizstromtherapie 6 von 22 Patienten in der Verumgruppe und 10 von 19 Patienten in der Placebogruppe auf die Therapie an. Die Unterschiede zwischen den Studiengruppen waren statistisch nicht signifikant.
Letztlich konnte die Wirksamkeit von Mikroreizstromtherapie bei diabetischer Polyneuropathie nicht bestätigt werden. Mit einer größeren Fallzahl und damit größerer statistischer Power könnte möglicherweise ein geringer Unterschied im Therapieerfolg zwischen Placebo- und Verumbehandlung statistisch signifikant werden. Dieser Therapieeffekt wäre aber möglicherweise schmerztherapeutisch als nicht relevant einzuschätzen, da es sich mit 80 %iger Wahrscheinlichkeit (Power der vorliegenden Studie) um eine Reduktion von weniger als 15 Punkten im PDI handelt. Daher kann die Mikroreizstromtherapie zur symptomatischen Therapie bei schmerzhafter diabetischer Neuropathie (dPNP) nicht empfohlen werden. Auf die Wirksamkeit von TENS mit höheren Stromstärken zur Behandlung der dPNP kann anhand der vorliegenden Studie kein Rückschluß gezogen werden.
Es profitieren dennoch circa 30 % der insgesamt 40 Studienteilnehmer von der Intervention. Da in der Schmerztherapie Ansprechraten auf eine Placebotherapie von 7 bis 49 % möglich sind, stellt TENS eine Möglichkeit dar, diesen Effekt zusätzlich mit relativ geringem Aufwand auszuschöpfen. Vorteile in der Therapie mit Reizstrom sind außerdem geringe Kosten, nahezu keine unerwünschten Nebenwirkungen und fast kein Vorliegen von Kontraindikationen. Damit ist diese zusätzliche Therapieoptionen der dPNP neben einer optimale Einstellung des Blutzuckers und einer medikamentösen Schmerztherapie nicht außer Acht zu lassen und die Wirksamkeit komplexer Therapieprogramme mit Langzeitreizstromtherapie sollte in weiteren kontrollierten klinischen Studien eruiert werden.
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Erasmus, Lene Mari. "Development of sensory tools for quality grading of Cyclopia genistoides, C. longifolia, C. maculata and C. subternata herbal teas." Thesis, Stellenbosch : Stellenbosh University, 2015. http://hdl.handle.net/10019.1/96756.
Abstract:
Thesis (MSc Food Sc)--Stellenbosch University, 2015.ENGLISH ABSTRACT: The sensory profiles and the phenolic composition of C. genistoides, C. longifolia, C. maculata and C. subternata, used for commercial production of honeybush tea, were determined with the aim to develop quality control tools, such as sensory wheels and statistical models to predict the basic taste and mouthfeel modalities using compositional data. Optimum fermentation parameters for C. longifolia in terms of aroma and flavour development were determined by investigating eight temperature/time regimes (80°C and 90°C for 8, 16, 24 and 32 h), using descriptive sensory analysis (DSA). Fermentation at 80°C/24 h or 90°C/24 h significantly reduced the negative sensory attributes present and produced a tea of good sensory quality. Previously, 80°C/24 h and 90°/16 h were shown to deliver optimum quality for the other three Cyclopia species. A large sample set (N = 150) consisting of C. genistoides, C. maculata and C. subternata, harvested during three production years (2010, 2012 and 2013), as well as C. longifolia harvested in 2013, was used to develop sensory wheels. All the samples were produced by fermentation at the two optimum fermentation temperature/time regimes of each species. The plant material was sourced from different production regions and plantations to ensure inherent plant variation was accommodated. The “characteristic” and generic sensory profile of honeybush was defined as a “fynbos-floral”, “woody”, “fynbos-sweet” aroma and flavour, with a sweet taste and slightly astringent mouthfeel. Species-specific sensory profiles were also identified. Cyclopia genistoides had a strong “rose geranium” flavour and a perceptible bitter taste, whereas C. longifolia had a similar sensory profile to that of C. genistoides, however, C. longifolia’s “rose geranium” flavour was less prominent and its bitter taste not perceptible. Cyclopia maculata and C. subternata were both described as having “caramel” and other “sweet-associated” notes and a slightly astringent mouthfeel. These results were used to develop a generic sensory wheel for both aroma and flavour, as well as similar wheels for each of the four Cyclopia species. Each sensory wheel reflects the relative intensity of the sensory attributes, while prevalence of the major attributes were accommodated in accompanying bar graphs. Sorting was investigated as a rapid profiling technique to serve as an alternative to the standard profiling method, descriptive sensory analysis (DSA). Instructed sorting was identified as a possible rapid sensory profiling tool for the honeybush industry, especially when samples need to be classified according to a selected list of sensory attributes. Uninstructed sorting can be used when the aim is to categorise a group of samples freely according to similarities and thus determine the natural grouping of samples within a broader sample set. The phenolic content of the respective four Cyclopia species differed qualitatively and quantitatively. Of the compounds quantified only four compounds were present in all four species, i.e. hesperidin, vicenin-2, mangiferin and isomangiferin. A larger number of compounds were present in three out of four species. The predictive value of the phenolic compounds towards the intensity of the taste and mouthfeel attributes (sweet, sour, bitter and astringent) was investigated using Pearson‟s correlation analysis, partial least squares regression (PLS) and step-wise regression analysis. Potential “candidate predictors” for taste and mouthfeel attributes were identified such as the xanthones, mangiferin and isomangiferin, being responsible for bitter taste and astringency.
AFRIKAANSE OPSOMMING: Die sensoriese profiel en fenoliese samestelling van C. genistoides, C. longifolia, C. maculata en C. subternata, waarvan heuningbostee geproduseer word, is bepaal om gehaltebeheer hulpmiddels te ontwikkel soos sensoriese wiele en statistiese modelle wat die fenoliese samestelling kan gebruik om die basiese smaak en mondgevoel eienskappe van infusies te voorspel. Die optimum fermentasie parameters vir C. longifolia in terma van aroma- en geurontwikkeling is bepaal deur agt temperatuur/tyd kombinasies (80°C en 90°C vir 8, 16, 24 en 32 h) te ondersoek met behulp van beskrywende sensoriese analise (BSA). Fermentasie by 80°C/24 h of 90°C/24 h het „n beduidende afname in die negatiewe sensoriese eienskappe veroorsaak en tot die ontwikkeling van tee met ʼn goeie sensoriese kwaliteit gelei. Die fermentasie parameters, 80°C/24 h en 90°/16 h, is voorheen aangedui as die optimale kondisies vir die ontwikkeling van „n goeie kwaliteit tee vir die ander drie Cyclopia spesies. 'n Groot stel monsters (N = 150), bestaande uit C. genistoides, C. maculata en C. subternata en ge-oes gedurende drie produksiejare (2010, 2012 en 2013), sowel as C. longifolia ge-oes in 2013, is gebruik om die sensoriese wiele te ontwikkel. Die twee optimum fermentasie temperatuur/tyd kombinasies van elke spesie is gebruik om die monsters te produseer. Plantmateriaal afkomstig van verskillende produksiegebiede en plantasies is versamel ten einde te verseker dat die monsters „n betekenisvolle hoeveelheid inherente variasie dek. Die generiese en "karakteristieke" sensoriese profiel wat met heuningbos geassosieer word, is gedefinieer as 'n "fynbos-blomagtige", "houtagtige", "fynbos-soet" aroma en geur, met 'n soet smaak en effense vrank mondgevoel. Spesies-spesifieke sensoriese profiele is ook geïdentifiseer. Cyclopia genistoides het 'n sterk "roos malva" geur en „n merkbare bitter smaak. Die sensoriese profiel van C. longifolia is soortgelyk aan dié van C. genistoides, maar sy "roos malva" geur was minder prominent en 'n bitter smaak was nie sensories waarneembaar nie. Beide C. maculata en C. subternata het waarneembare "karamel" en ander "soet-verwante" eienskappe, asook 'n effense vrank mondgevoel getoon. Die volle stel data is uiteindelik gebruik om 'n generiese sensoriese wiel vir heuningbostee, asook spesies-spesifieke sensoriese wiele vir elk van die vier Cyclopia spesies saam te stel. Die onderskeie sensoriese wiele weerspieël die relatiewe intensiteit van elk van die sensoriese eienskappe, terwyl die voorkoms-frekwensie van die onderskeie sensoriese eienskappe in gepaardgaande kolomgrafieke geillustreer is. Sortering, 'n vinnige profileringsmetode, is as alternatief tot die standaard profileringsmetode, beskrywende sensoriese analise (BSA), ondersoek. Gestrukteerde sortering is geïdentifiseer as 'n moontlike hulpmiddel vir die heuningbosbedryf om die sensoriese profiel van heuningbos te bepaal, veral wanneer „n groot aantal monsters vinning geklassifiseer moet word volgens 'n lys geselekteerde sensoriese eienskappe. Ongestrukteerde sortering kan gebruik word wanneer die doel is om „n groot aantal monsters vrylik te kategoriseer volgens hul sensoriese ooreenkomste of verskille. Die fenoliese saamestelling van die vier Cyclopia spesies het kwalitatief en kwantitatief verskil. Slegs vier van die gekwantifiseerde verbindings was teenwoordig in al vier spesies, naamlik hesperidien, visenien-2, mangiferien en isomangiferien. Meer verbindings was egter teenwoordig in drie van die vier spesies. Die voorspellingswaarde van die fenoliese verbindings tot die intensiteit van die smaak en mondgevoel eienskappe (soet, suur, bitter en vrank) is ondersoek met behulp van Pearson se korrelasie, gedeeltelike kleinste-kwadrate regressie (PLS) en stapsgewyse regressie analises. Potensiële "kandidaat voorspellers" vir die smaak en mondgevoel eienskappe, soos die xantone, mangiferien en isomangiferien, verantwoordelik vir 'n bitter smaak en vrank mondgevoel, is geïdentifiseer.
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Oliveira, Bruna Filipa Ferreira de. "Estudo da eficácia do TENS vs libertação miofascial na dor lombar e incapacidade funcional." Bachelor's thesis, [s.n.], 2018. http://hdl.handle.net/10284/6747.
Abstract:
Projeto de Graduação apresentado à Universidade Fernando Pessoa como parte dos requisitos para obtenção do grau de Licenciada em FisioterapiaObjetivo: Verificar qual dos métodos aplicados a Estimulação Elétrica Neural Transcutânea (TENS) ou Libertação Miofascial (LM) tem eficácia, na incapacidade funcional e redução da dor lombar. Metodologia: É um estudo quasi-experimental randomizado, com 28 elementos de ambos os sexos, com uma média de idades de 21,86 ± 1,56 anos, divididos aleatoriamente em dois grupos: Grupo TENS (n=14) que realiza tratamento com TENS, em modo acupuntura, com uma frequência de 20Hz e largura de pulso de 100pps, durante 30 minutos e grupo LM (n=14) em que consistiu no contorno de diversas regiões da zona lombar, fazendo duas passagens em cada região, cada uma durante 3 minutos. Ambos os grupos foram submetidos a duas sessões por semana por 4 semanas. Resultados: Após a aplicação do protocolo verificou-se que tanto no grupo TENS como no grupo LM houve uma redução da dor e uma melhoria na incapacidade funcional, mas, comparando os grupos, não houve diferenças significativas. Conclusão: Os resultados sugerem que ambas as técnicas aparentam ser uma boa solução para a redução da dor e melhoria da incapacidade funcional em indivíduos com dor lombar.
Objective: Evaluate the effect of Trancutaneous Electrical Nerve Stimulation (TENS) or Miofascial release (MR) in functional incapacity and reduction of lumbar pain. Methodology: It is a randomized quasi-experimental study, with 28 elements of both genders, with an age average of 21,86 ± 1,56 years old. They were randomly assigned into two groups: group TENS (n=14) which performs TENS treatment in acupuncture mode, with a frequency of 20Hz and pulse width of 100pps, during 30 minutes and a group MR (n = 14) where consisted the contour of several regions of the lumbar region, each one during 3 minutes. The intervention was applied two times per week, during 4 weeks. Results: After the application of the protocol, it was verified that in both groups there was a reduction of pain and an improvement of functional incapacity, however, when there were no statistical difference between groups. Conclusion: The results suggest that both techniques seems to be a good solution to reduce pain and increase functional disability in individuals with low back pain.
N/A
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Waymark, Claire Marie. "Joint validation of HIRDLS and TES." Thesis, University of Oxford, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.531808.
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Richard, France Portalier Serge. "De mes yeux à tes mains." Lyon : Université Lumière Lyon 2, 2002. http://demeter.univ-lyon2.fr:8080/sdx/theses/lyon2/2002/richard_f.
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Formenton, Maira Rezende. "Eletroterapia e laserterapia no controle da dor e inflamação no período pós-operatório em cães submetidos a cirurgia de osteotomia de nivelamento do platô da tíbia: estudo prospectivo." Universidade de São Paulo, 2015. http://www.teses.usp.br/teses/disponiveis/10/10137/tde-27012016-081544/.
Abstract:
A fisioterapia é uma área medicina veterinária com um crescente interesse científico, da mesma forma que sua aplicação em pequenos animais. Em cães, entre as indicações da reabilitação está o pós-operatório ortopédico recente, em que os objetivos principais são o controle álgico e da inflamação, possibilitando um restabelecimento funcional precoce. Dentre as afecções ortopédicas, a ruptura de ligamento cruzado cranial é a mais comum na articulação fêmoro-tíbio-patelar em cães, sendo a técnica de nivelamento do platô tibial amplamente empregada. O presente estudo teve como objetivo a análise dos efeitos da eletroterapia e da laserterapia nos aspectos de dor e inflamação no pós-operatório recente da referida cirurgia ortopédica. Para esta avaliação, foi utilizada uma metodologia multimodal que incluiu escalas de dor unidimensional (ENV) e multidimensional (Glasgow), escalas de claudicação, análise cinética por baropodometria, análises perimétricas e termográficas da articulação. Vinte e quatro cães foram selecionados, sendo que efetivamente distribuídos e randomizados entre os grupos, 16. Dentre eles, 9 animais foram distribuídos no grupo Fisioterapia (F) e 7 no grupo Placebo(P). Os animais do grupo fisioterapia foram submetidos a 6 sessões de eletroterapia associada à laserterapia, enquanto os animais do segundo grupo submetidos a 6 sessões placebo. Ambos os grupos foram avaliados antes da cirurgia, no pós-operatório previamente às sessões e ao término das 6 sessões. O grupo fisioterapia teve benefícios evidenciados nas análises seriadas das escalas de dor, com valores de P=0,0156 e P=0,011, nos quesitos de ENV do avaliador e do cuidador respectivamente. Nas análises de dor através da escala de Glasgow, os valores de P=0.0272 na análise seriada do grupo tratado, confirmando a melhora deste grupo em relação ao controle, onde o resultado de P=0.4375. Porém, não foram observadas diferenças nos quesitos de escalas de claudicação, avaliação de edema através de perimetria, e, inflamação através da termografia, em relação ao grupo placebo. Na avaliação cinética, houve diferença na análise dos parâmetros de impulso vertical, tendendo à melhora do grupo fisioterapia, porém na análise do pico de força vertical, que é mais sensível, não houve diferença entre os grupos. Houve também a necessidade de resgate analgésico em três animais do grupo placebo, sendo que nenhum animal do grupo Fisioterapia necessitou de resgate. Conclui-se que os animais submetidos às sessões de fisioterapia tiveram melhor evolução nos quesitos de dor, além de não necessitarem de resgate analgésico. Não houve influência da laserterapia no controle da inflamação e do edema através dos métodos avaliados. Evidencia-se a necessidade de mais estudos sobre os resultados das técnicas de fisioterapia quando aplicadas à rotina clínica veterinária, especialmente, com um maior número de amostrasPhysical therapy is a veterinary medicine area with a growing scientific interest, as its application in small animals. In dogs, among the physiotherapy indications is the recent orthopedic post operatory period, in order to control pain and inflammation to get an early functional recovery. Among the orthopedic diseases, the cranial cruciate ligament rupture is the most common disease in the femoral-tibio-patellar joint in dogs, and the tibial plateau leveling osteotomy, the to more common surgical approach. This study aimed to evidence the effects of electrotherapy and laser therapy on aspects of pain and inflammation in the post operatory of that recent surgery. For this evaluation were used multimodal methods that included unidirectional and multidirectional pain scales, lameness scales, kinetic analysis by baropodometry, perimeter and thermographic analysis. Twenty-four dogs were selected, which effectively distributed between the groups 16. Among them, 9 animals in physiotherapy group (F) 7 and the placebo group (P). Animals in the physical therapy group underwent 6 electrotherapy sessions associated with laser therapy, and the other group underwent 6 placebo sessions. Both groups were evaluated before surgery, in the post recent post operatory, before the treatment, and after 6 sessions. The physiotherapy group had benefits shown in the serial analysis of pain scales, with P = 0.0156 and P = 0.011 values for the treated group, for ENV questions of the evaluator and the owner, respectively. The pain analysis by the Glasgow scale, the values of P = 0.0272 in the serial analysis of the treated group, confirming the improvement of this group compared to the control group, which had the P = 0.4375. Despite of these findings, no differences were observed in the categories of lameness scales, edema assessment through perimetry and thermography. In the kinetic evaluation, there were differences in the analysis of vertical impulse parameters, tending to improve of the physiotherapy group, but in the analysis of vertical peak force, which is more sensitive, there was no difference between groups. There was also the need for analgesic rescue medication in three animals of the placebo group. We conclude that animals subjected to actual physical therapy sessions had improvement in pain scores, and do not require analgesic rescue. There was no influence on the swelling or on the inflammation through the methods used in this study. Further studies are needed, especially with a larger number of animals