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Literatura académica sobre el tema "Physiological aspects"

Autor: Grafiati
Publicado: 4 de junio de 2021
Última modificación: 31 de julio de 2024

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Artículos de revistas sobre el tema "Physiological aspects"

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Van Hamme, Jonathan D., Ajay Singh y Owen P. Ward. "Physiological aspects". Biotechnology Advances 24, n.º 6 (noviembre de 2006): 604–20. http://dx.doi.org/10.1016/j.biotechadv.2006.08.001.

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KRAUSE, E. "Cardiac energetics: Physiological and patho-physiological aspects". Journal of Molecular and Cellular Cardiology 23 (julio de 1991): S52. http://dx.doi.org/10.1016/0022-2828(91)90669-d.

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Agrawal, AkashKumar, CR Yadav y MS Meena. "Physiological aspects of Agni". AYU (An International Quarterly Journal of Research in Ayurveda) 31, n.º 3 (2010): 395. http://dx.doi.org/10.4103/0974-8520.77159.

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Lichtman, Stuart M. "Physiological Aspects of Aging". Drugs & Aging 7, n.º 3 (1995): 212–25. http://dx.doi.org/10.2165/00002512-199507030-00006.

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Soni, Neetu, Rashmi Pradhan y Bhupendra Kumar Mishra. "PHYSIOLOGICAL ASPECTS OF ASTHIDHATU". International Ayurvedic Medical Journal 9, n.º 10 (15 de octubre de 2021): 2495–99. http://dx.doi.org/10.46607/iamj3209102021.

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Ayurveda is an ancient medical science which is related to health. Ayurveda described three basic physiological constitution of the body they are: Dosha, Dhatu and mala. Dhatu are structural unit of the body. Asthi is fifth dhatu among saptadhatu. In modern science asthidhatu relate with bones and cartilage. Bones store minerals such as calcium. Metabolic bone diseases are caused by minerals and vitamins deficiency. Asthidhatu is resultant of action of medoagni on medodhatu and is responsible for nourishing majjadhatu. It supports the basic structures, protect vital organs, nourishing the nervous tissue. Health refers to the moderate quantity of asthidhatu while dis- orders may develop when any vitiation occur. Just as asthi dhatu (Bones) contribute to health, diseases related to bones can disrupt the body. This paper attempts to understand concepts of Asthidhatu for maintain health and pre- vention from diseases related to the bone. Keywords: Health, Asthidhatu ksaya-Vruddhi, functions
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Shaikh, SharmeenFarooque, AmishaA Shah, AjitV Koshy y MohseenR Kazi. "Physiological aspects of cytokeratins". Universal Research Journal of Dentistry 6, n.º 3 (2016): 199. http://dx.doi.org/10.4103/urjd.urjd_25_16.

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Chodzko-Zajko, Wojtek J. y Robert L. Ringel. "Physiological aspects of aging". Journal of Voice 1, n.º 1 (enero de 1987): 18–26. http://dx.doi.org/10.1016/s0892-1997(87)80019-x.

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Soin, Bob y Peter J. Friend. "Physiological aspects of xenotransplantation". Transplantation Reviews 15, n.º 4 (octubre de 2001): 200–209. http://dx.doi.org/10.1016/s0955-470x(01)80019-7.

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LACHENMYER, JUDI. "Physiological Aspects of Transport". International Anesthesiology Clinics 25, n.º 2 (1987): 15–41. http://dx.doi.org/10.1097/00004311-198702520-00004.

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Saito, Susumu. "Physiological aspects of VDT work." Japanese journal of ergonomics 33, Supplement (1997): 44–45. http://dx.doi.org/10.5100/jje.33.supplement_44.

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Tesis sobre el tema "Physiological aspects"

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Young, Ingrid Victoria. "The energy demands of a 2,000 meter race simulation for national level oarswomen". Thesis, University of British Columbia, 1988. http://hdl.handle.net/2429/28542.

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The purpose of this study was to assess the energy demands of a 2,000 meter race simulation (RS) for national level oarswomen; as evaluated on a rowing ergometer (RE). A Progressive Intensity Test (P.I.T.) was also performed on the RE to further evaluate the RS. Six national level oarswomen (X values: age= 24.5 yrs., ht= 179 cm, wt= 75 kg), all current national team candidates (1988), participated in this investigation. A 6 1/2 minute tape recorded water race was used to execute a 2,000 meter RS on a Dr. Gjessing Ergorow ergometer. The tape recording was an actual race tape that was respliced to last exactly 6 1/2 minutes. Metabolic and respiratory exchange variables were continuously monitored by an open circuit method, utilizing a Beckman Metabolic Measurement Cart interfaced on-line with a Hewlitt Packard 3052A data acquisition system. The energy demands were calculated from metabolic variables, total oxygen cost and the analysis of excess post-exercise oxygen consumption (recovery V0₂).Results indicated a mean V0₂max. of 3.85 1.min⁻¹ , mean net V0₂ of 24.48 1 and a mean recovery V0₂ of 4.92 1. This represented the aerobic cost of the event at approximately 80% or 4/5ths of the total energy cost while the anaerobic contribution was approximately 20% of l/5th of the total energy cost. During the RS, V0₂ values rapidly increased to 90% of mean V0₂max. (3.85 l.min⁻¹) in the first two minutes. Mean max. VE (BTPS) RS value was 122.4 1.min⁻¹. VE plateaued after two minutes and remained around 90% of P.I.T. mean max. VE for the final 4 1/2 minutes. Mean max. excess C0₂ for RS was 19.81 ml.kg⁻¹.min⁻¹. The average maximal heart rate, as recorded in the RS was 192.8 bpm. The results of this study indicate the high aerobic demands and tremendous exercise intensity involved in the 2,000 meter RS.
Education, Faculty of
Curriculum and Pedagogy (EDCP), Department of
Graduate
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Sandbakk, Øyvind. "Physiological and Biomechanical Aspects of Sprint Skiing". Doctoral thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for bevegelsesvitenskap, 2011. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-12139.

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Sprint cross-country skiing is a physiologically and technically complex discipline, performed as a time-trial qualification race and three subsequent knock-out heats. The racing time in a single heat is 2-4 min and is comparable to other middle-distance sports. However, sprint skiing is performed in varied terrain at constantly changing intensities using multiple techniques involving the arms and the legs to various degrees. The overall objectives of the current thesis were to examine physiological and biomechanical aspects associated with sprint skiing performance in the skating technique in elite skiers: 1) while treadmill roller skiing in the laboratory (studies I-IV), 2) during sprint competitions on snow (studies IV-V) and 3) for relationships between laboratory characteristics and performance on snow (studies IV-V). Studies I-III are comparative studies in which physiological characteristics, mechanical efficiency and gross kinematics during treadmill roller skiing were compared between male world-class and national level sprint skiers (studies I-II), and between men and women matched for performance level (study III). Study I showed that maximal aerobic capacity, gross efficiency and high speed capacity differentiated world-class from national level sprint skiers. The study also indicated that low and moderate intensity endurance training and maximal speed training is important in attaining an international level in sprint skiing. Study II demonstrated that world-class sprint skiers had a higher gross efficiency than national level skiers. A general linear relationship between work rate and metabolic rate existed, indicating that gross efficiency at moderate and high work rates provides useful information about crosscountry skiers in standardized conditions during treadmill roller skiing. Furthermore, worldclass skiers used longer cycle lengths and lower cycle rates at a given speed and generated higher maximal speeds. In study III, men showed a 17% higher peak treadmill speed at a short and long incremental test compared to women. These gender differences were slightly greater than findings in comparable endurance sports. The majority of gender differences in performance could be explained by higher maximal oxygen uptakes and lower fat percentages in men. Men and women showed similar gross efficiency. However, women showed higher fractional utilization of maximal oxygen uptake at the anaerobic threshold. In studies IV-V, elite male skiers were analyzed for speeds, work rates, technique choices and gross kinematics during two sprint time-trial competitions on snow. Furthermore, the skiers were tested for physiological and kinematical characteristics in the laboratory. Study IV analyzed the time-trial of an international sprint competition. The results showed that performance on uphill and flat terrain strongly determined sprint time-trial performance, and that performance in the last half of the race differentiated most between skiers. Estimated work rates on an uphill section of the race were approximately 60% higher than the capacities which the skiers are able to cover aerobically. Peak oxygen uptake, gross efficiency, peak treadmill speed and peak cycle length were strongly related to sprint time-trial performance, particularly to the uphill and flat sections during the last part of the race. Study V analyzed a simulated sprint race by using a high end differential global navigation satellite system with simultaneous tracking of both GPS and GLONASS satellites. This provided an opportunity for more detailed analysis of cross-country skiing. Skiers encompassed a large speed range (2.9–12.9 m·s-1) and multiple transitions between skiing techniques (range: 21–34 transitions). The results demonstrated that performance in the uphill sections had the strongest correlation to sprint performance, and that the faster skiers used the G3 technique to a greater extent than the slower skiers. Thus, this provides new knowledge on physiological and biomechanical aspects of sprint skating performance, particularly that both the maximal aerobic and peak speed capacities differed between world-class and national level sprint skiers. Furthermore, gross efficiency, while treadmill roller skiing provides relevant information strongly related to sprint performance level. Better skiers also employ longer cycle lengths at the same absolute speeds and at individual peak speeds. The gender differences in performance were slightly larger than expected; however, most of these differences could be explained by a higher maximal oxygen uptake and a lower fat percentage in men. Furthermore, the variations in speeds, work rates and techniques and, especially, speed in uphill and flat terrain are important to the skiers’ total time-trial performance. Better sprint performance is related to more application of the G3 technique and to longer cycle lengths within this technique. Faster skiers showed higher peak oxygen uptake, gross efficiency and high speed capacity. These capacities were specifically correlated to the ability to maintain high speed on uphill and flat terrain throughout a sprint race.
Sprintlangrenn er ein fysiologisk og biomekanisk kompleks disiplin som blir utført som ein prolog og tre etterfølgjande utslagsløp. Konkurransetidene i kvart enkelt heat er 2-4 min og kan samanliknast med andre mellomdistanseidrettar. Sprintlangrenn blir imidlertid gjennomført i kupert terreng og med varierande arbeidsintensitet og innslag av ulike teknikkar som involverer underkropp og overkropp i ulik grad. Den overordna målsetjinga med denne avhandlinga var å undersøke fysiologiske og biomekaniske aspekt som er assosiert med prestasjonen i sprint skøyting hos elite langrennsløparar: 1) på rulleskitredemølle i laboratoriet (studia I-IV), 2) i sprintkonkurransar på snø (studia IV-V), og 3) for samanhengar mellom laboratorium-karakteristikkar og sprintprestasjonen på snø (studia IV-V). Studia I-III undersøker forskjellar i fysiologiske karakteristikkar, mekanisk effektivitet og kinematikk mellom mannlege verdsklasse og nasjonal klasse sprintlangrennsløparar (studia III) og mellom mannlege og kvinnelege sprintlangrennsløparar på tilsvarande prestasjonsnivå (studie III). Studie I viser at maksimal aerob kapasitet, mekanisk effektivitet og hurtigheit skil verdsklasse frå nasjonal klasse sprintlangrennsløparar. Studiet indikerer også at låg- og moderat-intensiv uthaldstrening og maksimal hurtigheitstrening er viktig for å nå internasjonalt nivå i sprintlangrenn. Studie II viser at verdsklasse sprintlangrennsløparar har betre mekanisk effektivitet enn løparar på nasjonalt nivå. Studiet viser ein generell lineær samanheng mellom arbeidsratar og energiforbruk og indikerer at målingar av mekanisk effektivitet gir nyttig og valid informasjon om langrennsløparar som blir samanlikna under standardiserte vilkår på rulleskitredemøller. Studiet demonstrerer også at verdsklasse løparane har lengre sykluslengder og lågare syklusfrekvens på ei gitt fart. Studie III viser at menn oppnår 17 % høgre fart enn kvinner både på ein kort og ein lang prestasjonstest med trinnvis aukande fart på rulleskitredemølla. Resultata indikerer at prestasjonsforskjellane mellom kjønna hovudsakleg kan forklarast av høgare maksimalt oksygenopptak og lågare feittprosent hos menn, og at forskjellane er noko større enn det litteraturen viser i andre tilsvarande uthaldsidrettar. Kvinner og menn har lik effektivitet, mens kvinner har høgare prosentvis utnytting av maksimalt oksygenopptak ved anaerob terskel. I studia IV-V vart fart, arbeidsratar, teknikkval og kinematikk undervegs i sprintkonkurransar undersøkt. Vidare blei samanhengar mellom fysiologiske og kinematiske karakteristikkar i laboratoriet og sprintprestasjonen på snø undersøkt. I studie IV vart prologen i ein internasjonal sprintkonkurranse analysert. Resultata viser at prestasjonen i motbakke og i flatt terreng er sterke forklaringsvariablar for den totale prologprestasjonen. Studiet indikerer også at prestasjonen i siste halvdelen av løypa skil løparane mest. Estimerte arbeidsratar i motbakke indikerer eit totalt arbeid omlag 60% høgare enn det løparane klarer å dekke med aerob energi. Maksimalt oksygenopptak, mekaniske effektivitet, fartskapasitet og sykluslengde var sterkt relatert til sprintprestasjonen, og spesielt til farta i flatt terreng og motbakkar i siste halvdelen av løpet. I studie V vart ein simulert sprintprolog analysert ved bruk av ein høgteknologisk differensial GPS, med svært høg samplingsfrekvens og nøyaktigheit, som hadde samtidig mottak av GPS- og GLONASS-satellittar. Løparane gjennomførte sprintkonkurransen i variert terreng, noko som førte til eit spenn i hastigheiter frå 2.9 til 12.9 m·s-1 og som inkluderte 21–34 teknikkendringar. Motbakkeprestasjonen var høgast korrelert til total prestasjon, og betre skiløparar brukte dobbeldansteknikken i større grad, samanlikna med mindre gode løparar. Samanfatta så bidreg denne avhandlinga med ny kunnskap om fysiologiske og biomekaniske aspekt av sprintlangrenn i skøyting. Det viser at både maksimal aerob kapasitet og fartskapasitet skil verdsklasse frå nasjonal klasse sprintlangrennsløparar. Det er også vist at målingar av mekanisk effektivitet på rulleskitredemølle gir valid informasjon og er sterkt relatert til prestasjonsnivået til løparane. Dei beste løparane bruker lengre sykluslengder både på same submaksimale fart og på si høgste individuelle fart. Forskjellane mellom mannlege og kvinnelege sprintløparar i prestasjon er noko større enn forventa. Det meste av desse kjønnsforskjellane kan forklarast av at menn har høgare maksimalt oksygenopptak og lågare feittprosent. Undervegs i sprintprologar viser løparane store variasjonar i fart, arbeidsratar og vekslar stadig mellom ulike teknikkar. Spesielt er farta i motbakkar og flatt terreng mot slutten av løpa betydningsfull for prologprestasjonen. Betre prologprestasjon er linka til meir bruk av dobbeldansteknikken og lengre sykluslengder innan denne teknikken. Betre utøvarar har også høgare maksimalt oksygenopptak, effektivitet og fartskapasiet, noko som vart relatert til evna til å oppretthalde høg fart i motbakkar og flatt terreng gjennom eit sprintløp.
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Morren, Geert. "Anatomical and physiological aspects of anorectal dysfunction /". Linköping : Univ, 2002. http://www.bibl.liu.se/liupubl/disp/disp2002/med721s.pdf.

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Yerushalmi, Laleh. "Physiological aspects of the acetone-butanol fermentation". Thesis, McGill University, 1985. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=71969.

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The effect of the key physiological parameters on the production of solvents in the acetone-butanol fermentation using the anaerobic bacterium Clostridium acetobutylicum was examined in this work.
The theoretical solvent yield was calculated based on expressing stoichiometric relationships between the substrate and the products of the process. The maximum theoretical yield under the acceptable process conditions was established ranging from 38.6% to 39.9%.
A linear correlation was established between the production of solvents and gases which varied with the mixing rate of the fermentation system.
Elevated hydrogen partial pressure affected the metabolism of C. acetobutylicum resulting in increased butanol and ethanol yields (based on glucose) by an average of 18% and 13%, respectively.
A mathematical model for the batch acetone-butanol fermentation was formulated using original experimental data for the microbial growth, sugar consumption and metabolite biosynthesis. This model was used for computer process simulations. Parametric sensitivity analysis indicated the importance of the key process parameters.
A method of systems analysis was applied in analysing pronounced physiological differences in the performance of one of the C. acetobutylicum culture strains. The cellular transport mechanism for substrate (glucose), solvents and acids through the cell membrane was established to depend on its permeability and the number of sugar transport "sites". Experimental results obtained from the study of the uptake of 3-0-methyl glucose (0.7mM) by the "normal culture" and the "retarded culture" confirmed the theoretical predictions of a slower transpost in the "retarded culture". The theoretical predictions were further confirmed by additional experimental results.
A mathematical "Physiological State Model" was developed which includes the culture physiological parameters as well as the internal and the external culture conditions. Using this mathematical model the standard and the substandard acetone-butanol fermentations could be simulated.
These results demonstrate the application of the method of systems analysis in elucidation of the role played by the key culture physiological parameters in the fermentation process.
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Mishra, Mamata. "Clinical and physiological aspects of stress echocardiography". Thesis, Queen Mary, University of London, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.267303.

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Gao, Nong. "Physiological aspects of form determination in aphids". Thesis, Imperial College London, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.338681.

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Weber, Thomas Peter. "Theoretical and physiological aspects of bird migration". Thesis, University of Oxford, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.320682.

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Patel, Kishor Kantilal. "Physiological aspects of weight loss in obesity". Thesis, University of Nottingham, 2011. http://eprints.nottingham.ac.uk/12052/.

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Obesity continues to be a major cause of morbidity and mortality and worldwide prevalence rates continue to rise. The cornerstone for treating obesity remains diet and lifestyle, with the ultimate goal being normalising those parameters that are associated with ill health, for example hyperinsulinaemia and insulin resistance. Because obesity predominantly develops due to a mismatch between energy intake and utilisation, this thesis looked at the effects of dietary interventions upon Resting Energy Expenditure (REE) and substrate oxidation. In addition, the impact of popular dietary interventions upon body composition and insulin resistance was examined. When phenotypic characteristics were investigated before and after weight loss by using hypocaloric diets, which differed in fat and carbohydrate content, Fat-Free Mass (FFM) and Fat Mass (FM), were strong predictors of REE before and after the intervention and weight loss rather than the specific dietary intervention, significantly predicted post intervention REE. Fasting fat oxidation was found to be lower in obese subjects and they had a lower postprandial response to a high fat challenge. This implied that a diet high in fat is more likely to promote a positive energy balance an ultimate weight gain. The final study compared 4 popular dietary interventions. Each was equally effective at achieving clinically significant weight loss and improvements in insulin sensitivity. Although none was significantly more superior, there was a trend supporting three of the diets (Atkins’, Weight Watchers and Rosemary Conley) above the other (Slim-Fast) and it was the pattern of weight loss, i.e. mainly loss of FM, which proved beneficial with regards to improving insulin sensitivity. In summary, this thesis confirms that REE is mainly predicted by FFM and FM and that there is diminished fat oxidation on obese subjects. What this thesis also adds to previous research that it if a specific diet can improve the pattern of weight loss, this can be clinically beneficial.
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Lobo, Dileep N. "Physiological aspects of fluid and electrolyte balance". Thesis, University of Nottingham, 2003. http://eprints.nottingham.ac.uk/10150/.

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The intake of water and electrolytes is inseparable from feeding by natural or artificial means and careful attention to salt and water balance is a vital component of perioperative care and of nutritional support. Nutritional support with water and sodium restriction in post-intensive care patients with oedema, dilutional hypoalbuminaemia and fluid excess of 10 L, cleared oedema over 7-10 days, with a 1 g/L rise in serum albumin for every kg loss in weight. Return of gastrointestinal function was also observed. Accordingly, 20 patients, undergoing colonic surgery, were randomised to receive standard (>3 L water and 154 mmol sodium/day) or restricted postoperative fluids (<2 L water and 77 mmol sodium/day). Solid (72.5 vs 175 min) and liquid phase (73.5 vs 110 min) gastric emptying times were significantly longer in the standard group on the 4th postoperative day and associated with a three day longer hospital stay. In volunteers receiving 2 L of 0.9% saline and 5% dextrose infusions, on separate occasions over one hour, haematocrit and serum albumin concentration fell, mainly due to dilution. While dextrose was rapidly excreted, two-thirds of the saline was retained after 6 h. Following 1 L infusions, plasma renin and angiotensin concentrations decreased more after saline than dextrose (P<0.04). Responses of aldosterone, atrial natriuretic peptide and vasopressin were not significantly different. Comparing 2 L infusions of saline and Hartmann's solution, volunteers excreted more water (median 1000 vs 450 mL) and sodium (122 vs 73 mmol) after Hartmann's. Hyperchloraemia and reduced bicarbonate were noted after saline alone. Whereas fluctuations in water balance are dealt with efficiently through osmoreceptors and vasopressin, and sodium deficiency by volume receptors and the renin angiotensin aldosterone system, the mechanism for dealing with sodium and chloride excess appears relatively inefficient. Natriuretic peptide responds to volume expansion rather than sodium gain.
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Reilly, P. "Physiological and cytological aspects of fungal growth". Thesis, University of Aberdeen, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.332695.

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1. The septal structure of C. cinereus and N. crassa was examined via fluorescence microscopy and transmission electron microscopy. The septa of these organisms were shown to contain two plates of chitin, not one, as had been previously believed.2. The effect of the fluorochrome Calcofluor White on chitin synthesis in vivo and in vitro was investigated. Growth of C. cinereus in media seeded with the dye caused abnormal deposition of chitin at points of growth i.e. tips, septa, hook cells and clamps. However, high concentrations of the dye were required to have an effect on the chitin content and growth rate of the mycelium. X-ray crystallography showed that chitin synthesized in the presence of the fluorochrome was less crystalline than chitin synthesized when the dye was absent. It would appear, therefore, that Calcofluor binds to nascent chitin inhibiting its crystallization into microfibrils. It was concluded that chitin synthesis is a two-step process involving polymerization and subsequent crystallization.3. A range of fungi and growth forms were probed for the presence of actin using the actin-specific fluorochrome rhodamine phalloidin. Only U. phaseoli germlings and C. albicans yeast cells appeared to contain the protein. It is suggested that the failure to visualize actin in the other organisms examined is linked to their cell wall structure which prevented penetration of the rhodamine phalloidin to sites of actin localization.4. In the light of these results, mechanisms of hyphal growth are discussed and a model for the polarity of apical extension is presented.
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Libros sobre el tema "Physiological aspects"

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service), SpringerLink (Online, ed. Aestivation: Molecular and physiological aspects. Berlin: Springer, 2010.

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Halasz, Hisako. Stress: Physiological and psychological aspects. Washington, D.C: Science Reference Section, Science and Technology Division, Library of Congress, 1987.

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Azria, M. (Moïse). Calcitonins: Physiological and pharmacological aspects. Berlin: Springer Verlag, 1989.

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Nielsen, Jens Høiriis. Physiological engineering aspects of penicillium chrysogenum. [Denmark]: Polyteknisk forlag, 1995.

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Cavagna, Giovanni. Physiological Aspects of Legged Terrestrial Locomotion. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-49980-2.

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Kunio, Okuda y Benhamou Jean Pierre 1927-, eds. Portal hypertension: Clinical and physiological aspects. Tokyo: Springer-Verlag, 1991.

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Christopher, Kennard y Rose F. Clifford, eds. Physiological aspects of clinical neuro-ophthalmology. Chicago: Year Book Medical Publishers, 1988.

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Gasparro, Francis P., ed. Sunscreen Photobiology: Molecular, Cellular and Physiological Aspects. Berlin, Heidelberg: Springer Berlin Heidelberg, 1997. http://dx.doi.org/10.1007/978-3-662-10135-3.

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International Meeting on Plant Mitochondria : Structural, Functional, and Physiological Aspects (2nd 1986 Aberystwyth, Wales). Plant mitochondria: Structural, functional, and physiological aspects. New York: Plenum Press, 1987.

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P, Gasparro Francis, ed. Sunscreen photobiology: Molecular, cellular, and physiological aspects. Berlin: Springer-Verlag, 1997.

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Capítulos de libros sobre el tema "Physiological aspects"

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Basuchaudhuri, Pranab. "Physiological Aspects". En Submerged Rice, 108–54. Boca Raton: CRC Press, 2024. http://dx.doi.org/10.1201/9781032663432-5.

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Behrens, Maik y Wolfgang Meyerhof. "Physiological Aspects of Bitterness". En Bitterness, 21–35. Hoboken, New Jersey: John Wiley & Sons, Inc., 2017. http://dx.doi.org/10.1002/9781118590263.ch2.

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Kendall, W. A. y W. C. Stringer. "Physiological Aspects of Clover". En Agronomy Monographs, 111–59. Madison, WI, USA: American Society of Agronomy, Crop Science Society of America, Soil Science Society of America, 2015. http://dx.doi.org/10.2134/agronmonogr25.c4.

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Kurt, Nevin Cambaz y Gian Carlo Di Renzo. "Physiological Aspects of Lactation". En Breastfeeding and Metabolic Programming, 51–59. Cham: Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-33278-4_5.

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Goren, R., M. Huberman y E. E. Goldschmidt. "Girdling: Physiological and Horticultural Aspects". En Horticultural Reviews, 1–36. Oxford, UK: John Wiley & Sons, Inc., 2010. http://dx.doi.org/10.1002/9780470650837.ch1.

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Sperlich, Billy. "Physiological Aspects of Marathon Running". En Marathon Running: Physiology, Psychology, Nutrition and Training Aspects, 1–12. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-29728-6_1.

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Gruppuso, Philip A. "Insulin: Biochemical and Physiological Aspects". En Principles of Perinatal-Neonatal Metabolism, 84–102. New York, NY: Springer US, 1991. http://dx.doi.org/10.1007/978-1-4684-0400-5_5.

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D’Ercole, A. Joseph. "Somatomedins: Biochemical and Physiological Aspects". En Principles of Perinatal-Neonatal Metabolism, 128–48. New York, NY: Springer US, 1991. http://dx.doi.org/10.1007/978-1-4684-0400-5_7.

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Ball, G. F. M. "Physiological aspects of vitamin bioavailability". En Bioavailability and Analysis of Vitamins in Foods, 1–31. Boston, MA: Springer US, 1998. http://dx.doi.org/10.1007/978-1-4899-3414-7_1.

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Azria, Moise. "Calcitonins — Physiological and Pharmacological Aspects". En Progress in Clinical Biochemistry and Medicine, 1–34. Berlin, Heidelberg: Springer Berlin Heidelberg, 1989. http://dx.doi.org/10.1007/978-3-642-74734-2_1.

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Actas de conferencias sobre el tema "Physiological aspects"

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Furr, Paul A., Conrad B. Monson, William J. Sears y Fred J. Abeles. "Physiological Aspects of EVA". En Intersociety Conference on Environmental Systems. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 1986. http://dx.doi.org/10.4271/860991.

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Richter, B., M. Burdumy, M. Echternach, C. Spahn, M. Bock y L. Traser. "Singer s Medicine – Vizualisation of physiological aspects". En Abstract- und Posterband – 91. Jahresversammlung der Deutschen Gesellschaft für HNO-Heilkunde, Kopf- und Hals-Chirurgie e.V., Bonn – Welche Qualität macht den Unterschied. © Georg Thieme Verlag KG, 2020. http://dx.doi.org/10.1055/s-0040-1711333.

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Vartanyan, Inna. "MUSICAL EAR: ANATOMICAL, PHYSIOLOGICAL AND PSYCHO-ACOUSTIC ASPECTS". En XV International interdisciplinary congress "Neuroscience for Medicine and Psychology". LLC MAKS Press, 2019. http://dx.doi.org/10.29003/m342.sudak.ns2019-15/114-115.

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Reidenbach, Hans-Dieter. "LEDs are not lasers regarding physiological safety aspects". En ILSC® 2005: Proceedings of the International Laser Safety Conference. Laser Institute of America, 2005. http://dx.doi.org/10.2351/1.5056589.

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Kelesheva, L. F. "ON SOME PHILOSOPHICAL ASPECTS OF THE THEORY OF FUNCTIONAL SYSTEMS P.K. ANOKHIN". En MODERN PROBLEMS IN SYSTEMIC REGULATION OF PHYSIOLOGICAL FUNCTIONS. NPG Publishing, 2019. http://dx.doi.org/10.24108/5-2019-confnf-34.

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Farkhutdinova, Louisa. "Physiological And Psychological Aspects Of Stress Resistance Of Students". En Humanistic Practice in Education in a Postmodern Age. European Publisher, 2020. http://dx.doi.org/10.15405/epsbs.2020.11.100.

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Rusu, LD, Laura Poanta, Cristina Hotoleanu, Lucica Coldea Agoston, D. Zdrenghea y DL Dumitrascu. "Heart rate variability assessment — physiological and pathological aspects". En 2008 IEEE International Conference on Automation, Quality and Testing, Robotics. IEEE, 2008. http://dx.doi.org/10.1109/aqtr.2008.4588882.

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Rao, Mandavilli M., Vladimir Blazek y Hans J. Schmitt. "Neurological and physiological aspects of chakras using optical sensors". En BiOS '99 International Biomedical Optics Symposium, editado por Alexander V. Priezzhev y Toshimitsu Asakura. SPIE, 1999. http://dx.doi.org/10.1117/12.348374.

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Barer, Arnold S. "Physiological and Medical Aspects of the EVA. The Russian Experience". En International Conference on Environmental Systems. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 1995. http://dx.doi.org/10.4271/951591.

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Ferguson, Ian T., Kelcy L. Yunghans, Amirhossein Ghods, Vishal G. Saravade y Chuanle Zhou. "A Review of the Physiological Aspects of Solid State Lighting". En Solid-State Lighting. Washington, D.C.: OSA, 2017. http://dx.doi.org/10.1364/ssl.2017.sw3c.3.

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Informes sobre el tema "Physiological aspects"

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Epstein, E., T. W.-M. Fan, R. M. Higashi y W. K. Silk. Plant Physiological Aspects of Silicon. Office of Scientific and Technical Information (OSTI), julio de 2002. http://dx.doi.org/10.2172/761913.

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Epstein, Emanuel. Final Report: Plant Physiological Aspects of Silicon, July 20, 1994 - July 19, 1998. Office of Scientific and Technical Information (OSTI), enero de 2000. http://dx.doi.org/10.2172/755822.

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Knapik, Joseph y Katy Reynolds. Load Carriage in Military Operations: A Review of Historical, Physiological, Biomechanical, and Medical Aspects. Fort Belvoir, VA: Defense Technical Information Center, enero de 1997. http://dx.doi.org/10.21236/ada330082.

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Martinho, Diogo V., Élvio R. Gouveia, André Rebelo, Adam Field, Alex S. Ribeiro, Juliano Casonatto y Hugo Sarmento. Physical and Physiological aspects in CrossFit®: a scoping review with evidence gap map and meta-correlation. INPLASY - International Platform of Registered Systematic Review and Meta-analysis Protocols, mayo de 2024. http://dx.doi.org/10.37766/inplasy2024.5.0063.

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Meidan, Rina, Jorge Flores, Keith Inskeep y David Wolfenson. Controlling the bovine ovarian cycle by disrupting the endothelin system in corpora lutea and follicles with novel approaches: RNA interference (RNAi) and intra-luteal Atrigel implants. United States Department of Agriculture, junio de 2006. http://dx.doi.org/10.32747/2006.7695594.bard.

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In summary intensive studies carried out this year in both the US and Israel had established the methodology necessary for the achievement of the specific aims of the original proposal. Two complementary approaches to effectively neutralize the luteal ET- system were developed. In light of recent publications indicating that ET-2 might also have a physiological role in ovulation, the objectives of the original proposal have even more significant. Not only were the technologies to neutralize the luteal endothelin system developed in these studies, but additional important implications about the role of ET-1 were revealed. For example, direct early inhibitory effects of PGF2α were unmasked. It is possible that these early direct inhibitory effects could be related to functional aspects of luteal regression, while the effects observed after 12 hours of the PGF2α injection and that reversed by the ET receptor antagonist, could coincide with structural aspects of regression. Nevertheless, overall, the results clearly indicate that serum progesterone concentrations can effectively be elevated by the receptor antagonist which of great practical importance.
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Soenko, Yevgeny. TYPOLOGY OF PERIPHERAL VISION. Intellectual Archive, mayo de 2020. http://dx.doi.org/10.32370/iaj.2331.

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The research is based on the statement that retina produces the proper level of electrical activity, sourcing visual system. I started the research with partial darkening of different parts of the visual fields of humans to register possible psychological and physiological changes. The tested showed dramatically increasing variability and number of changes within just four exact types of darkening. More, emotional and physiological aspects of those changes were polarized into general acceptance and general rejection of a certain type of darkening in most of the individual tests. Thus the tested formed two opposite groups within every one of those types of darkening: a group with general negative reactions and a group with general positive ones. Further, those types of darkening turned out combined in pairs. General tune of reactions of most of the tested changed to strictly reverse within a pair of upper-lower types of darkening of peripheral vision and outer-inner ones as well. Between the pairs of types of darkening, there was no correspondence. The tested showed stability of their reactions during at least several months. Thus I may state a possibility of existence in the visual system of humans of two independent neuropsychological structures both having two alternative modes of functioning with a stable preference of just one of them in every individual case. If it is true, there may be a vision-based typology.
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Bonfil, David J., Daniel S. Long y Yafit Cohen. Remote Sensing of Crop Physiological Parameters for Improved Nitrogen Management in Semi-Arid Wheat Production Systems. United States Department of Agriculture, enero de 2008. http://dx.doi.org/10.32747/2008.7696531.bard.

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To reduce financial risk and N losses to the environment, fertilization methods are needed that improve NUE and increase the quality of wheat. In the literature, ample attention is given to grid-based and zone-based soil testing to determine the soil N available early in the growing season. Plus, information is available on in-season N topdressing applications as a means of improving GPC. However, the vast majority of research has focused on wheat that is grown under N limiting conditions in sub-humid regions and irrigated fields. Less attention has been given to wheat in dryland that is water limited. The objectives of this study were to: (1) determine accuracy in determining GPC of HRSW in Israel and SWWW in Oregon using on-combine optical sensors under field conditions; (2) develop a quantitative relationship between image spectral reflectance and effective crop physiological parameters; (3) develop an operational precision N management procedure that combines variable-rate N recommendations at planting as derived from maps of grain yield, GPC, and test weight; and at mid-season as derived from quantitative relationships, remote sensing, and the DSS; and (4) address the economic and technology-transfer aspects of producers’ needs. Results from the research suggest that optical sensing and the DSS can be used for estimating the N status of dryland wheat and deciding whether additional N is needed to improve GPC. Significant findings include: 1. In-line NIR reflectance spectroscopy can be used to rapidly and accurately (SEP <5.0 mg g⁻¹) measure GPC of a grain stream conveyed by an auger. 2. On-combine NIR spectroscopy can be used to accurately estimate (R² < 0.88) grain test weight across fields. 3. Precision N management based on N removal increases GPC, grain yield, and profitability in rainfed wheat. 4. Hyperspectral SI and partial least squares (PLS) models have excellent potential for estimation of biomass, and water and N contents of wheat. 5. A novel heading index can be used to monitor spike emergence of wheat with classification accuracy between 53 and 83%. 6. Index MCARI/MTVI2 promises to improve remote sensing of wheat N status where water- not soil N fertility, is the main driver of plant growth. Important features include: (a) computable from commercial aerospace imagery that include the red edge waveband, (b) sensitive to Chl and resistant to variation in crop biomass, and (c) accommodates variation in soil reflectance. Findings #1 and #2 above enable growers to further implement an efficient, low cost PNM approach using commercially available on-combine optical sensors. Finding #3 suggests that profit opportunities may exist from PNM based on information from on-combine sensing and aerospace remote sensing. Finding #4, with its emphasis on data retrieval and accuracy, enhances the potential usefulness of a DSS as a tool for field crop management. Finding #5 enables land managers to use a DSS to ascertain at mid-season whether a wheat crop should be harvested for grain or forage. Finding #6a expands potential commercial opportunities of MS imagery and thus has special importance to a majority of aerospace imaging firms specializing in the acquisition and utilization of these data. Finding #6b on index MCARI/MVTI2 has great potential to expand use of ground-based sensing and in-season N management to millions of hectares of land in semiarid environments where water- not N, is the main determinant of grain yield. Finding #6c demonstrates that MCARI/MTVI2 may alleviate the requirement of multiple N-rich reference strips to account for soil differences within farm fields. This simplicity will be less demanding of grower resources, promising substantially greater acceptance of sensing technologies for in-season N management.
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Sukenik, Assaf, Paul Roessler y John Ohlrogge. Biochemical and Physiological Regulation of Lipid Synthesis in Unicellular Algae with Special Emphasis on W-3 Very Long Chain Lipids. United States Department of Agriculture, enero de 1995. http://dx.doi.org/10.32747/1995.7604932.bard.

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Various unicellular algae produce omega-3 (w3) very-long-chain polyunsaturated fatty acids (VLC-PUFA), which are rarely found in higher plants. In this research and other studies from our laboratories, it has been demonstrated that the marine unicellular alga Nannochloropsis (Eustigmatophyceae) can be used as a reliable and high quality source for the w3 VLC-PUFA eicosapentaenoic acid (EPA). This alga is widely used in mariculture systems as the primary component of the artificial food chain in fish larvae production, mainly due to its high EPA content. Furthermore, w3 fatty acids are essential for humans as dietary supplements and may have therapeutic benefits. The goal of this research proposal was to understand the physiological and biochemical mechanisms which regulate the synthesis and accumulation of glycerolipids enriched with w3 VLC-PUFA in Nannochloropsis. The results of our studies demonstrate various aspects of lipid synthesis and its regulation in the alga: 1. Variations in lipid class composition imposed by various environmental conditions were determined with special emphasis on the relative abundance of the molecular species of triacylglycerol (TAG) and monogalactosyl diacylglycerol (MGDG). 2. The relationships between the cellular content of major glycerolipids (TAG and MGDG) and the enzymes involved in their synthesis were studied. The results suggested the importance of UDP-galactose diacylglycerol galactosyl (UDGT) in regulation of the cellular level of MGDG. In a current effort we have purified UDGT several hundredfold from Nannochloropsis. It is our aim to purify this enzyme to near homogeneity and to produce antibodies against this enzyme in order to provide the tools for elucidation of the biochemical mechanisms that regulate this enzyme and carbon allocation into galactolipids. 3. Our in vitro and in vivo labeling studies indicated the possibility that phosphatidylcholine (PC) and phosphatidylethanolamine (PE) are associated with desaturation of the structural lipids, whereas shorter chain saturated fatty acids are more likely to be incorporated into TAG. 4. Isolation of several putative mutants of Nannochloropsis which appear to have different lipid and fatty acid compositions than the wild type; a mutant of a special importance that is devoid of EPA was fully characterized. In addition, we could demonstrate the feasibility of Nannochloropsis biomass production for aquaculture and human health: 1) We demonstrated in semi-industrial scale the feasibility of mass production of Nannochloropsis biomass in collaboration with the algae plant NBT in Eilat; 2) Nutritional studies verified the importance algal w3 fatty acids for the development of rats and demonstrated that Nannochloropsis biomass fed to pregnant and lactating rats can benefit their offspring.
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Cnaani, Avner, Gordon Grau, Darren Lerner y Sheenan Harpaz. Gastrointestinal osmoregulatory activity in Tilapia and its effects on growth, an opportunity for fish diet developments. United States Department of Agriculture, julio de 2014. http://dx.doi.org/10.32747/2014.7594393.bard.

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Fish living in freshwater and seawater environments experience constant osmotic pressure between their internal body and the surrounding water. Regulation of ion and water balance under these conditions is highly energetic demanding, and eventually, affects the fish growth. While the role of the gills in osmoregulation was extensively studied, the osmoregulatory activity of the gastrointestinal tract is less known. In this study we characterized the tilapia intestine as a multifunctional organ, having a role in both nutrition and in ion regulation. We studied the pituitary endocrine regulation of intestinal salinity adaptation, the salinity-dependent physiological activity along different intestinal sections, and specific genes that are linking nutrient absorption with ion and acid-base regulation. The results of this study indicate that different intestinal sections developed various specific activities. Their endocrine regulation is now better understood, a large data-set of salinity dependent gene transcript was developed, as well as new tools and methods to study new aspects of intestinal physiology.
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Steffens, John, Eithan Harel y Alfred Mayer. Coding, Expression, Targeting, Import and Processing of Distinct Polyphenoloxidases in Tissues of Higher Plants. United States Department of Agriculture, noviembre de 1994. http://dx.doi.org/10.32747/1994.7613008.bard.

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Polyphenol oxidase (PPO) catalyzes the oxidation of phenols to quinones at the expense of O2. PPOs are ubiquitous in higer plants, and their role in oxidative browning of plant tissues causes large annual losses to food production. Despite the importance of PPOs to agriculture, the function(s) of PPOs in higher plants are not understood. Among other roles, PPOs have been proposed to participate in aspects of chloroplast metabolism, based on their occurrence in plastids and high Km for O2. Due to the ability of PPO to catalyze formation of highly reactive quinones, PPOs have also been proposed to be involved in a wide array of defensive interactions with insect, bacterial, and fungal pests. Physiological and biochemical studies of PPO have provided few answers to the major problems of PPO function, subcellular localization, and biochemical properties. This proposal achieved the following major objectives: cloning of PPO cDNAs in potato and tomato; characterization of the tomato PPO gene family; antisense downregulation of the tomato PPO gene family; and reduction in post-harvest enzymic browning of potato through expression of antisense PPO genes under the control of tuber-specific promoters. In addition, we established the lumenal localization of PPO, characterized and clarified the means by which PPOs are imported and processed by chloroplasts, and provided insight into the factors which control localization of PPOs. This proposal has thereby provided fundamental advances in the understanding of this enzyme and the control of its expression.
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