Literatura académica sobre el tema "Sheep Physiology"

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Artículos de revistas sobre el tema "Sheep Physiology"

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Diven, R. H., R. E. Reed, and W. J. Pistor. "THE PHYSIOLOGY OF NITRITE POISONING IN SHEEP*." Annals of the New York Academy of Sciences 111, no. 2 (December 15, 2006): 638–43. http://dx.doi.org/10.1111/j.1749-6632.1964.tb53131.x.

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Ahmad Pampori, Zahoor, Aasif Ahmad Sheikh, Ovais Aarif, Dilruba Hasin, and Irfan Ahmad Bhat. "Physiology of reproductive seasonality in sheep – an update." Biological Rhythm Research 51, no. 4 (December 10, 2018): 586–98. http://dx.doi.org/10.1080/09291016.2018.1548112.

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Fortune, J. A. "Reproductive physiology of Merino sheep: Concepts and consequences." Animal Reproduction Science 30, no. 4 (January 1993): 335–36. http://dx.doi.org/10.1016/0378-4320(93)90083-4.

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Zhao, Pengfei, Shaobin Li, Zhaohua He, Fangfang Zhao, Jiqing Wang, Xiu Liu, Mingna Li, Jiang Hu, Zhidong Zhao, and Yuzhu Luo. "Physiology and Proteomic Basis of Lung Adaptation to High-Altitude Hypoxia in Tibetan Sheep." Animals 12, no. 16 (August 19, 2022): 2134. http://dx.doi.org/10.3390/ani12162134.

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The Tibetan sheep is an indigenous animal of the Tibetan plateau, and after a long period of adaptation have adapted to high-altitude hypoxia. Many physiological changes occur in Tibetan sheep as they adapt to high-altitude hypoxia, especially in the lungs. To reveal the physiological changes and their molecular mechanisms in the lungs of Tibetan sheep during adaptation to high altitudes, we selected Tibetan sheep from three altitudes (2500 m, 3500 m, and 4500 m) and measured blood-gas indicators, observed lung structures, and compared lung proteome changes. The results showed that the Tibetan
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Morand, C., C. Yacoub, C. Remesy, and C. Demigne. "Characterization of glucagon and catecholamine effects on isolated sheep hepatocytes." American Journal of Physiology-Regulatory, Integrative and Comparative Physiology 255, no. 4 (October 1, 1988): R539—R546. http://dx.doi.org/10.1152/ajpregu.1988.255.4.r539.

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The purpose of this study was to characterize the glycogenolytic response to catecholamines and glucagon in isolated sheep hepatocytes. In this species, epinephrine appeared to exert its action on hepatic glycogenolysis by altering the cytosolic concentrations of both adenosine 3',5'-cyclic monophosphate (cAMP) and Ca2+. In contrast to results obtained in rat hepatocytes, glucagon failed to induce a rise in free cytosolic Ca2+ in sheep liver. Experiments on isolated hepatocytes or on liver plasma membranes showed that in sheep, glucagon was more efficient than epinephrine in promoting the prod
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Owens, J. A., J. Falconer, and J. S. Robinson. "Glucose metabolism in pregnant sheep when placental growth is restricted." American Journal of Physiology-Regulatory, Integrative and Comparative Physiology 257, no. 2 (August 1, 1989): R350—R357. http://dx.doi.org/10.1152/ajpregu.1989.257.2.r350.

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The effect of restricting placental growth on glucose metabolism in pregnant sheep in late gestation was determined by primed constant infusions of D-[U-14C]- and D-[2-3H]glucose and antipyrine into fetuses of six control sheep and six sheep from which endometrial caruncles had been removed before pregnancy (caruncle sheep). In the latter, placental and fetal weights were reduced, as was the concentration of glucose in fetal arterial blood. Fetal glucose turnover in caruncle sheep was only 52-59% of that in controls, largely because of lower umbilical loss of glucose back to the placenta (38-3
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Snapper, J. R., and P. L. Lefferts. "Effects of aerosol histamine and carbachol on central and peripheral airflow resistance in sheep." Journal of Applied Physiology 61, no. 2 (August 1, 1986): 760–65. http://dx.doi.org/10.1152/jappl.1986.61.2.760.

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Sixteen anesthetized artificially ventilated open-chest sheep were prepared with retrograde catheters to allow for measurement of dynamic compliance of the lungs (Cdyn), total airflow resistance of the lungs (RL), and central (Rc) and peripheral (Rp) airflow resistance. Twelve sheep received aerosol histamine and 12 sheep received aerosol carbachol. Eight sheep received and responded to both aerosol histamine and aerosol carbachol. Three sheep received both aerosol histamine and aerosol carbachol but failed to respond to both agents. Under base-line conditions, for the 16 sheep, 69% of total R
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Coggeshall, J. W., B. W. Christman, P. L. Lefferts, W. E. Serafin, I. A. Blair, M. J. Butterfield, and J. R. Snapper. "Effect of inhibition of 5-lipoxygenase metabolism of arachidonic acid on response to endotoxemia in sheep." Journal of Applied Physiology 65, no. 3 (September 1, 1988): 1351–59. http://dx.doi.org/10.1152/jappl.1988.65.3.1351.

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We studied the effects of a 5-lipoxygenase inhibitor, L-651,192, on the pulmonary dysfunction caused by endotoxemia in chronically instrumented unanesthetized sheep. The efficacy and selectivity of L-651,392 were tested by measuring in vivo production of leukotriene B4 (LTB4) and cyclooxygenase products of arachidonic acid after endotoxemia before and after pretreatment with L-651,392 and ex vivo from granulocytes and whole blood stimulated with calcium ionophore from sheep before and 24 h after pretreatment with L-651,392. A novel assay for LTB4 by high-performance liquid chromatography/gas c
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Bujok, Jolanta, Tomasz Walski, Albert Czerski, Katarzyna Gałecka, Karolina Grzeszczuk-Kuć, Wojciech Zawadzki, Wojciech Witkiewicz, and Małgorzata Komorowska. "Sheep model of haemodialysis treatment." Laboratory Animals 52, no. 2 (July 10, 2017): 176–85. http://dx.doi.org/10.1177/0023677217718861.

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More than two million patients received haemodialysis (HD) in 2013. Many methods for improving dialysis therapy outcomes have been tested. Nevertheless, patients continue to experience high morbidity and mortality rates. We aimed to develop an animal model of HD treatment to study methods that would prevent the adverse effects of renal replacement therapy. The study was conducted using six male Merino sheep. The animals underwent a two-step bilateral nephrectomy, and a permanent dual-lumen catheter was inserted into the jugular vein. In each animal, 10 short, daily HD treatments were conducted
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Gopalakrishnan, G. S., D. S. Gardner, S. M. Rhind, M. T. Rae, C. E. Kyle, A. N. Brooks, R. M. Walker, et al. "Programming of adult cardiovascular function after early maternal undernutrition in sheep." American Journal of Physiology-Regulatory, Integrative and Comparative Physiology 287, no. 1 (July 2004): R12—R20. http://dx.doi.org/10.1152/ajpregu.00687.2003.

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The prenatal nutritional environment influences the subsequent risk of hypertension in adulthood. Animal studies have used, generally, the rat as a model species to illustrate the association between maternal nutrient intake and blood pressure in the resulting adult offspring. No study to date has shown programming of adult cardiovascular function in the sheep through maternal dietary intervention. We therefore fed pregnant sheep to either 100% recommended intake from day 0 of gestation to term [∼147 days gestational age (dGA); controls n = 8] or to 50% recommended intake from day 0 to 95 dGA
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Tesis sobre el tema "Sheep Physiology"

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Hopkins, John. "Lymphoid physiology of the sheep." Thesis, University of Edinburgh, 2000. http://hdl.handle.net/1842/29805.

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The aim of this thesis is to bring together and summarize the results of twenty-five years of active research into the immunology and physiology of the mammalian lymphoid system using the sheep as the model species. For this work I have exploited the cannulation of peripheral lymphatics, which enables the monitoring of lymph, lymphocytes and dendritic cells that are constantly trafficking from the skin or from lymph nodes. The use of this technique in the sheep permits access to large numbers of lymph-borne cells over extensive periods and in a form far closer to their <i>in vivo</i> non-activ
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Falchi, Laura. "Transcervical artificial insemination and physiology of the cervix of the sheep." Thesis, Royal Veterinary College (University of London), 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.558963.

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Nicholls, C. D. "Endoscopy, physiology and bacterial flora of sheep infected with abomasal nematodes." Thesis, University of Leeds, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.377967.

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Morrow, Robert James. "Blood flow velocity changes in the umbilical artery of the fetal sheep." Thesis, Queen's University Belfast, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.356870.

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Mamo, John Charles Louis. "Plasma lipoprotein triacylglycerol metabolism in sheep : a thesis submitted to the University of Adelaide in fulfilment of the requirements for the degree of Doctor of Philosophy." Title page, contents and introduction only, 1986. http://web4.library.adelaide.edu.au/theses/09PH/09phm265.pdf.

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Swinburne, Sarah Jane. "A study of the molecular and biological characteristics of ovine interleukin-12." Title page, contents and summary only, 2000. http://web4.library.adelaide.edu.au/theses/09PH/09phs9777.pdf.

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Bibliography: leaves 172-214. Interleukin-12 (IL-12) is a heterodimeric cytokine composed of two disulphide-linked subunits, p35 and p40, which form biologically active p70. IL-12 is able to induce IFN-y production from T and NK cells, and promote the proliferation of mitogen-activated T cells. It is thought that IL-12 may be an important cytokine in the initiation and progression of allograft destruction. This thesis describes the characterisation of ovine IL-12.
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Yarney, Thaddeus A. "Sexual maturational changes in the pituitary and testes of ram lambs and predictability of adult reproductive function." Thesis, McGill University, 1985. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=72049.

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Spring-born ram lambs were used to examine: (1) sexual maturational changes in LH, FSH and prolactin (PRL) secretion, testicular gonadotropin receptors, and testicular size and function; (2) predictability of yearling ram reproductive function from juvenile testicular size and reproductive hormone measurements. Despite continuous increases in testis size, serum LH-profile characteristics became greatest between 2 and 4 months and declined thereafter. However, LH-peak frequency increased by about 2-fold between 6 and 7 months; this was associated with marked increases in testosterone (T) secret
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Vasquez, Hidalgo Manuel Alexander. "Effects of Nutrient Restriction, Realimentation, and Twinning on Plasma Volume, Umbilical Hemodynamics and Placental Characteristics in the Pregnant Adolescent Ewe." Diss., North Dakota State University, 2019. https://hdl.handle.net/10365/31573.

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Reproductive physiology in production animals is a key economic component of longevity and profitability of animal farming. There are several components that can benefit or compromise adequate pregnancy periods. Sheep production is not only a very important economic activity for farmers around the United States, but sheep are also an important medical and surgical model to study human diseases. Our findings suggest that estradiol-17 beta could be involved in acute increased plasma volume early in gestation which can benefit overall gestation. We report that umbilical blood flow decreases upon
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Schoombee, Cornelius Johan Albertus. "The Damara sheep : an appraisal of its reproductive performance and potential." Thesis, Stellenbosch : University of Stellenbosch, 1998. http://hdl.handle.net/10019.1/5481.

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Ross, Jacob T. "Hypophysial and local mediators of adrenocortical growth and function before birth /." Title page, contents and summary only, 2000. http://web4.library.adelaide.edu.au/theses/09PH/09phr8242.pdf.

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Libros sobre el tema "Sheep Physiology"

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Butterfield, Rex M. New concepts of sheep growth. Sydney: Published by the Dept. of Veterinary Anatomy, University of Sydney, 1988.

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Grist, A. Ovine meat inspection: Anatomy, physiology, and disease conditions. Nottingham, U.K: Nottingham University Press, 2010.

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The Florey: The story of the Sheep Hilton. North Ryde, NSW, Australia: Angus & Robertson, 1989.

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J, Clarkson M., ed. A handbook for the sheep clinician. 7th ed. Oxfordshire: CAB International, 2012.

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Mason, B. D. Nutrition guide for B.C. sheep producers. [Victoria, B.C.?]: Province of British Columbia, Ministry of Agriculture and Food, 1985.

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Sharpe, Ann. Studies in perinatal lamb mortality in prolific sheep. Dublin: University College Dublin, 1998.

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Kania, Bogdan Feliks. Modulujący wpływ podwzgórza oraz opioidów na motorykę przedżołądków u owcy. Warszawa: Wydawn. SGGW, 1992.

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Motyl, Tomasz. Synteza kwasu orotowego w wątrobie oraz jego wydalanie u zwierząt przeżuwających. Warszawa: Wydawn. SGGW-AR, 1987.

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Swanson, Janice C. Stress in sheep and goats: January 1979 - August 1990. Beltsville, Md: National Agricultural Library, 1990.

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Tortora, Gerard J. A photographic atlas of the human body: With selected cat, sheep, and cow dissections. 2nd ed. [Hoboken, N.J.]: Wiley, 2004.

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Capítulos de libros sobre el tema "Sheep Physiology"

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Rousseau, J. P., A. Marie, and M. Falempin. "6. Afferent Vagal Traffic in Conscious Sheep." In Aspects of Digestive Physiology in Ruminants, edited by Marjorie J. Dobson, 123–39. Ithaca, NY: Cornell University Press, 2019. http://dx.doi.org/10.7591/9781501745713-008.

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McKinley, M. J., D. A. Denton, M. Leventer, R. R. Miselis, R. G. Park, E. Tarjan, J. B. Simpsom, and R. S. Weisinger. "Adipsia in Sheep Caused by Cerebral Lesions." In The Physiology of Thirst and Sodium Appetite, 321–26. Boston, MA: Springer US, 1986. http://dx.doi.org/10.1007/978-1-4757-0366-5_41.

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Sutherland, T. M. "3. Particle Separation in the Forestomachs of Sheep." In Aspects of Digestive Physiology in Ruminants, edited by Marjorie J. Dobson, 43–73. Ithaca, NY: Cornell University Press, 2019. http://dx.doi.org/10.7591/9781501745713-005.

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Weisinger, R. S., D. A. Denton, M. J. McKinley, J. B. Simpson, and E. Tarjan. "Cerebral Na Sensors and Na Appetite of Sheep." In The Physiology of Thirst and Sodium Appetite, 485–90. Boston, MA: Springer US, 1986. http://dx.doi.org/10.1007/978-1-4757-0366-5_64.

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Sheldrick, E. L., and A. P. F. Flint. "Secretion of Oxytocin by the Corpus Luteum and its Role in Luteolysis in the Sheep." In Endocrinology and Physiology of Reproduction, 211–19. Boston, MA: Springer US, 1987. http://dx.doi.org/10.1007/978-1-4899-1971-7_17.

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Sumar, Julio. "Reproductive physiology in South American Camelids." In Genetics of Reproduction in Sheep, 81–95. Elsevier, 1985. http://dx.doi.org/10.1016/b978-0-407-00302-6.50012-x.

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FOSTER, D., and L. JACKSON. "Puberty in the Sheep." In Knobil and Neill's Physiology of Reproduction, 2127–76. Elsevier, 2006. http://dx.doi.org/10.1016/b978-012515400-0/50044-0.

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Foster, Douglas L., and Stanley M. Hileman. "Puberty in the Sheep." In Knobil and Neill's Physiology of Reproduction, 1441–85. Elsevier, 2015. http://dx.doi.org/10.1016/b978-0-12-397175-3.00031-4.

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RAJKOVIC, A., S. PANGAS, and M. MATZUK. "Follicular DevelopmentMouse, Sheep, and Human Models." In Knobil and Neill's Physiology of Reproduction, 383–423. Elsevier, 2006. http://dx.doi.org/10.1016/b978-012515400-0/50015-4.

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Medjekal, Samir, and Mouloud Ghadbane. "Sheep Digestive Physiology and Constituents of Feeds." In Sheep Farming - An Approach to Feed, Growth and Health. IntechOpen, 2021. http://dx.doi.org/10.5772/intechopen.92054.

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Sheep have a gastrointestinal tract similar to that of other ruminants. Their stomach is made up of four digestive organs: the rumen, the reticulum, the omasum and the abomasum. The rumen plays a role in storing ingested foods, which are fermented by a complex anaerobic rumen microbiota population with different types of interactions, positive or negative, that can occur between their microbial populations. Sheep feeding is largely based on the use of natural or cultivated fodder, which is exploited in green by grazing during the growth period of the grass and in the form of fodder preserved during the winter period. Ruminant foods are essentially of plant origin, and their constituents belong to two types of structures: intracellular constituents and cell wall components. Cellular carbohydrates play a role of metabolites or energy reserves; soluble carbohydrates account for less than 10% dry matter (DM) of foods. The plant cell wall is multi-layered and consists of primary wall and secondary wall. Fundamentally, the walls are deposited at an early stage of growth. A central blade forms the common boundary layer between two adjacent cells and occupies the location of the cell plate. Most of the plant cell walls consist of polysaccharides (cellulose, hemicellulose and pectic substances) and lignin, these constituents being highly polymerized, as well as proteins and tannins.
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Actas de conferencias sobre el tema "Sheep Physiology"

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Filippi, J. F., D. Arnoux, N. Tubiana, B. Boutière, F. Le Caär, J. Sampol, Lab Hématol, Pr J. Sampol, and Pr Y. Carcassonne. "PLASMINOGEN ACTIVATOR ACTIVITY OF NORMAL AND MALIGNANT MONONUCLEAR HUMAN CELLS." In XIth International Congress on Thrombosis and Haemostasis. Schattauer GmbH, 1987. http://dx.doi.org/10.1055/s-0038-1643167.

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Plasminogen activators (PA) are thought to play a role in the invasive and metastatic properties of many types of cancer cells. Though, discrepancies in correlations between fibrinolytic activity and metastatic potential of malignant cells have been described.In this study, we evaluated both tissue type (tPA) and urokinase type (UK) cellular PA activities in different mononuclear cell types : normal T and B human peripheral lymphocytes, B cells from patients with chronic lymphocytic leukemia (CLL), human blood monocytes, alveolar macrophages, U 937, RAJI and JM cell 1ines.Mononuclear cells wer
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Yu, Jing, Yichen Ding, Arash Abiri, Parinaz Abiri, Juhyun Lee, Chih-Chiang Chang, Kyung In Baek, Rene Packard, and Tzung Hsiai. "Integrating 4-d light-sheet imaging with interactive virtual reality to recapitulate developmental cardiac mechanics and physiology." In Advanced Biomedical and Clinical Diagnostic and Surgical Guidance Systems XVI, edited by Tuan Vo-Dinh, Anita Mahadevan-Jansen, and Warren S. Grundfest. SPIE, 2018. http://dx.doi.org/10.1117/12.2286296.

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de Vito, Giuseppe, Lapo Turrini, Chiara Fornetto, Pietro Ricci, Caroline Müllenbroich, Giuseppe Sancataldo, Elena Trabalzini, et al. "Two-photon light-sheet microscopy for high-speed whole-brain functional imaging of zebrafish neuronal physiology and pathology." In Neurophotonics, edited by Thomas Kuner, Francesco Saverio Pavone, and Laurent Cognet. SPIE, 2020. http://dx.doi.org/10.1117/12.2560341.

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Sukhova, E. M., and V. S. Sukhov. "Optical model of the distribution of non-photochemical quenching in a sheet." In IX Congress of society physiologists of plants of Russia "Plant physiology is the basis for creating plants of the future. Kazan University Press, 2019. http://dx.doi.org/10.26907/978-5-00130-204-9-2019-421.

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Wolfson, M. R., P. Enkhbaatar, S. Fukuda, C. L. Nelson, R. O. Williams, III, S. Hengsawas, S. Sahakijpijarn, et al. "Perfluorochemical-Facilitated Fibrinolysin Delivery: Sustained Improvement in Physiologic Outcomes in Inhalational Smoke Induced Acute Lung Injury (ISALI) in Sheep." In American Thoracic Society 2019 International Conference, May 17-22, 2019 - Dallas, TX. American Thoracic Society, 2019. http://dx.doi.org/10.1164/ajrccm-conference.2019.199.1_meetingabstracts.a1696.

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Rambitan, Vandalita MM, Evie Palenewen, and Rachmawati. "Implementation of Student Sheet Activities Through the Usage of Mantangan (Merremia peltata (L.) Merr.) Extract as Organic Fertilizer to Increase Student Concept Understanding on Plant Physiology." In 2nd Educational Sciences International Conference (ESIC 2019). Paris, France: Atlantis Press, 2020. http://dx.doi.org/10.2991/assehr.k.200417.013.

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Informes sobre el tema "Sheep Physiology"

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Bazer, Fuller W., Arieh Gertler, and Elisha Gootwine. Role of Placental Lactogen in Sheep. United States Department of Agriculture, January 2001. http://dx.doi.org/10.32747/2001.7574339.bard.

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Central problems in sheep and dairy cattle production are reproductive failure due to embryonic/fetal mortality and low birth weights, especially in prolific breeds, and reduced milk yields which adversely affect neonatal survival and economy of production. The sheep placenta expresses lactogenic (ovine placental lactogen, oPL) and somatogenic (ovine placental growth hormone, oGH) hormones. Our research has focused on the biological roles of oPL and oGH in function of the uterine endometrium during gestation and the mammary gland during pregnancy and lactation. Major conclusions were that: ( 1
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Brosh, Arieh, David Robertshaw, Yoav Aharoni, Zvi Holzer, Mario Gutman, and Amichai Arieli. Estimation of Energy Expenditure of Free Living and Growing Domesticated Ruminants by Heart Rate Measurement. United States Department of Agriculture, April 2002. http://dx.doi.org/10.32747/2002.7580685.bard.

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Research objectives were: 1) To study the effect of diet energy density, level of exercise, thermal conditions and reproductive state on cardiovascular function as it relates to oxygen (O2) mobilization. 2) To validate the use of heart rate (HR) to predict energy expenditure (EE) of ruminants, by measuring and calculating the energy balance components at different productive and reproductive states. 3) To validate the use of HR to identify changes in the metabolizable energy (ME) and ME intake (MEI) of grazing ruminants. Background: The development of an effective method for the measurement of
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