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Дисертації з теми "Release animals"

Автор: Grafiati

Опубліковано: 3 червня 2025

Оновлено: 31 липня 2025

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1

Nevalainen, Nina, Martin Lundblad, Greg A. Gerhardt, and Ingrid Strömberg. "Striatal Glutamate Release in L-DOPA-Induced Dyskinetic Animals." Umeå universitet, Institutionen för strålningsvetenskaper, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-67595.

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L-DOPA-induced dyskinesia is a common side effect developed after chronic treatment with 3,4-dihydroxyphenyl-L-alanine (L-DOPA) in Parkinson's disease. The biological mechanisms behind this side effect are not fully comprehended although involvement of dopaminergic, serotonergic, and glutamatergic systems has been suggested. The present study utilizes in vivo amperometry to investigate the impact from unilateral 6-hydroxydopamine lesions and L-DOPA (4 mg/kg, including benserazide 15 mg/kg) -induced dyskinetic behavior on striatal basal extracellular glutamate concentration and potassium-evoked

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2

Henderson, Anna Rosalind. "Protein synthesis and synchrony of nutrient release in the rumen of the lactating dairy cow." Thesis, University of Nottingham, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.286248.

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3

Lee, Michael Richard F. "The use of novel forages to increase the synchrony of nitrogen and energy release in the reticulo-rumen of sheep and beef steers." Thesis, Aberystwyth University, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.364898.

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4

Azizan, A. R. "The effect of a prolonged release formulation of bovine somatotropin (sometribove) on milk production of Bos Taurus and dairy crossbred cows in Malaysia." Thesis, University of Reading, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.294565.

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5

Costa, Inês Duarte Alves da. "Clínica e comportamento de animais selvagens." Master's thesis, Universidade de Évora, 2015. http://hdl.handle.net/10174/17680.

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O presente relatório refere-se ao estágio curricular realizado no âmbito do Mestrado Integrado em Medicina Veterinária da Universidade de Évora, com o título de Clínica e Comportamento de Animais Selvagens, realizado no Centro de Triagem de Animais Silvestres e no Centro de Medicina e Pesquisa de Animais Selvagens. O relatório está dividido em duas partes. Na primeira é descrita a casuística assistida durante o estágio, enquanto que a segunda é dedicada a uma revisão bibliográfica sobre a criação de órfãos selvagens com expectativa de retorno à natureza, com posterior referência a alguns dos c

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6

Werner, Catherine. "An Innovative method for measuring cortical acetylcholine release in animals on a second-by-second time scale." Connect to resource, 2006. http://hdl.handle.net/1811/6619.

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Thesis (Honors)--Ohio State University, 2006.<br>Title from first page of PDF file. Document formatted into pages: contains 50 p.; also includes graphics. Includes bibliographical references (p. 28-37). Available online via Ohio State University's Knowledge Bank.

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7

Vos, Lynette Christine. "Growth factor expression and release in the ischemic heart." Scholarly Commons, 2004. https://scholarlycommons.pacific.edu/uop_etds/2665.

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The angiogenic and cardioprotective effects of basic fibroblast growth factor (FGF-2) and vascular endothelial growth factor (VEGF) in the ischemic myocardium have been studied, but expression and release of endogenous FGF-2 and VEGF during myocardial ischemia are poorly understood. In addition, nitric oxide synthase isoforms eNOS and iNOS may play a role in myocardial ischemia. The purpose of this study was to investigate the release of FGF-2 and expression of FGF-2, VEGF, eNOS, and iNOS in the normal and ischemic heart. In Phase I, serum FGF-2 levels in patients undergoing treadmill stress t

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8

Rossi, Marcelí Joele. "Suplementação da população de bugios-pretos (Alouatta caraya) no campus da Universidade de São Paulo em Ribeirão Preto pela soltura de indivíduos cativos - estudo do comportamento." Universidade de São Paulo, 2011. http://www.teses.usp.br/teses/disponiveis/59/59134/tde-12092011-111247/.

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O campus da Universidade de São Paulo em Ribeirão Preto consiste em uma área de 450 ha, caracterizada por um mosaico de remanescentes de mata e construções, sendo uma das maiores áreas verdes do município. Para suplementar a população de bugios-pretos (Alouatta caraya) existente no campus, este estudo realizou a soltura de um casal cativo. O grupo residente, composto por quatro bugios, foi rastreado seis dias por mês num período de seis meses para verificação da área de vida com finalidade de definir uma área para a soltura do casal. Um macho adulto e uma fêmea subadulta foram unidos em cative

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9

Hu, Kang Dickson J. M. "Development and characterization of poly(vinylidene fluoride)-poly(acrylic acid) pore-filledpH-sensitive membranes and potential application on controlled drug release for ruminant animals." *McMaster only, 2007.

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10

Parsons, Sven David Charles. "Natural animal model systems to study tuberculosis." Thesis, Stellenbosch : University of Stellenbosch, 2010. http://hdl.handle.net/10019.1/4505.

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Thesis (PhD (Molecular Biology and Human Genetics))--University of Stellenbosch, 2010.<br>ENGLISH ABSTRACT: The growing global epidemic of human tuberculosis (TB) results in 8 million new cases of this disease and 2 million deaths annually. Control thereof will require greater insight into the biology of the causative organism, Mycobacterium tuberculosis, and into the pathogenesis of the disease. This will benefit the design of new vaccines and diagnostic assays which may reduce the degree of both disease transmission and progression. Animal models have played a vital role in the understandin

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11

Jeppsson, Knut-Håkan. "Aerial environment in uninsulated livestock buildings : release of ammonia, carbon dioxide and water vapour from deep litter and effect of solar heat load on the interior thermal environment /." Alnarp : Swedish Univ. of Agricultural Sciences (Sveriges lantbruksuniv.), 2000. http://epsilon.slu.se/avh/2000/91-576-5751-3.pdf.

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12

Fray, Martin Dennerley. "Gonadotrophin release in post parturient cattle and sheep." Thesis, University of Nottingham, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.314751.

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13

Koliandris, Andreas. "Relationship between texture of gels and flavour release." Thesis, University of Nottingham, 2009. http://eprints.nottingham.ac.uk/11689/.

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To provide further insight into the relationship between the structure of hydrocolloid solutions and gels and perception of taste and flavour, solutions of gelatin and locust bean gum, and gels prepared from mixtures of (a) high acyl and low acyl gellan (b) carrageenan and locust bean gum were studied. Both solutions contained sodium chloride and the gels were flavoured with ethyl butyrate. The gels were classified from rheological measurements into 3 categories: strong/brittle, intermediate and soft/elastic. Volatile release was measured by monitoring nose space volatile concentration during

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14

Reid, Steve G. "Control of catecholamine storage and release in teleost fish." Thesis, University of Ottawa (Canada), 1995. http://hdl.handle.net/10393/9961.

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This thesis examined a variety of factors controlling the storage and release of the catecholamine hormones, adrenaline and noradrenaline, from chromaffin cells in teleost fish. In these fish, chromaffin cells line the walls of the posterior cardinal vein (PCV) in the anterior kidney region (head kidney). To examine the process of catecholamine release, an in situ saline-perfused PCV preparation first was developed and validated in the rainbow trout (Oncorhynchus mykiss). The levels of stored catecholamines were approximately 4X greater in trout than in eel, and trout chromaffin cells released

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15

Ling, Zong-Chao. "Islet glucose metabolism and insulin release in two animal models of glucose intolerance /." Stockholm, 1999. http://diss.kib.ki.se/1999/19990517ling/.

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16

Mangat, Harman. "A study of stretch-stimulated ANF release from the atrial myocardium." Thesis, University of Ottawa (Canada), 1993. http://hdl.handle.net/10393/6833.

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Atrial muscle stretch is widely believed to be the main stimulus for ANF release. However, we demonstrate in this study that although stretch induces an immediate increase in ANF output, this release rapidly decays even though hormone stores are not significantly depleted. In the present work, this phenomenon was studied in an isolated rat atria preparation using double isotope labelling. The tissue was labelled with $\rm\sp C$-leucine for 3 h followed by a 1 h chase, and then with $\rm\sp3H$-leucine for 1 h. A final 1 h chase period was conducted with the tissue under basal (0.2 g load) or st

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17

Walker, Angela. "Electrochemical study of vesicular release in bovine chromaffin cells." Thesis, McGill University, 1995. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=23431.

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The time course of the spontaneous current spikes produced by the release of the catecholamines from individual vesicles was examined in bovine chromaffin cells by using the carbon filament technique in the amperometric mode.<br>Frequency histograms of the rise and decay times of the current spikes showed a paucity of very short duration events. Scatterograms of the rise and decay times consistently showed a positive relation, and the best fitted lines intercepted the ordinate (the axis of the decay time) at: 16.06 $ pm$ 6.45 msec (n = 11).<br>The effect of temperature changes upon the time co

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18

Brunkwall, Jan. "On prostanoid release from animal and human vessels in an ex vivo perfusion model." Malmö, Sweden : [s.n.], 1990. http://books.google.com/books?id=SgJrAAAAMAAJ.

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19

Björkman, Jan-Arne. "Endogenous t-PA release and pharmacological thrombolysis : experimental animal studies of the coronary circulation /." Göteborg : Clinical Experimental Research Laboratory, Department of Emergency and Cardiovascular Medicine, Sahlgrenska University Hospital/Östra, Institute of Medicine, the Sahlgrenska Academy at Göteborg University, 2006. http://hdl.handle.net/2077/725.

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20

Montpetit, Colin J. "Neuronal control of catecholamine release in the rainbow trout (Oncorhynchus mykiss)." Thesis, University of Ottawa (Canada), 2003. http://hdl.handle.net/10393/28961.

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The aim of this thesis was to study aspects of the neuronal control of catecholamine secretion in a teleost, the rainbow trout. The development and validation of a nerve stimulation technique made it possible to determine that a portion of the neuronal control of catecholamine release, which prevailed at low frequency stimulation, could be attributed to vasoactive intestinal polypeptide (VIP) and/or pituitary adenylate cyclase activating polypeptide (PACAP). On the other hand, cholinergic stimulation predominated during higher levels of neuronal activity. Fluorescent histochemical techniques i

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21

Zhu, Ping jun. "Adenosine release and neuronal depression during energy deprivation : electrophysiological studies." Thesis, McGill University, 1996. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=40305.

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This thesis focuses on the effects of adenosine release on neuronal activity in the CA1 region of rat hippocampal slices, especially during energy deprivation, and related events. The overall aim was to find out how brain function is suppressed when metabolism is greatly reduced by the lack of oxygen or glucose, or by cyanide applications, and therefore to provide some insights in the cellular mechanisms underlying these depressant effects. Experiments were carried out on hippocampal slices kept submerged and constantly superfused with oxygenated saline at 33-34$ sp circ$C. Energy deprivation

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22

Fernandes, Cecília do Carmo Diogo. "Butterfly mobility: genetics and mark-release recapture studies." Master's thesis, Universidade de Aveiro, 2012. http://hdl.handle.net/10773/10263.

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Mestrado em Biologia Aplicada - Ecologia, Biodiversidade e Gestão de Ecossistemas<br>A dispersão biológica das espécies sempre foi um tema importante em vários estudos em ecologia de populações. Sabe-se que diferentes espécies de borboletas apresentam diferentes tipos de comportamentos: migratório ou sedentário. São conhecidos vários estudos genéticos que dizem respeito à estrutura populacional e aos problemas de isolamento. No entanto, são geralmente desconhecidos estudos de comportamento de dispersão das espécies para a análise populacional. Seleccionaram-se, por isso, dois métodos distintos

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23

Broomhead, Jonathan. "Calcium and phosphorus requirements in turkeys and an in vitro procedure for predicting phosphorus release /." free to MU campus, to others for purchase, 2004. http://wwwlib.umi.com/cr/mo/fullcit?p3164491.

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24

Zanetti, Diego. "Mineral release from different feeds, mineral balance for Nellore bulls, and water intake prediction by beef cattle." Universidade Federal de Viçosa, 2017. http://www.locus.ufv.br/handle/123456789/12352.

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Submitted by Reginaldo Soares de Freitas (reginaldo.freitas@ufv.br) on 2017-10-24T16:27:38Z No. of bitstreams: 1 texto completo.pdf: 1290781 bytes, checksum: 26969e6b4975755e04a6483c8d4906ce (MD5)<br>Made available in DSpace on 2017-10-24T16:27:38Z (GMT). No. of bitstreams: 1 texto completo.pdf: 1290781 bytes, checksum: 26969e6b4975755e04a6483c8d4906ce (MD5) Previous issue date: 2017-07-28<br>Conselho Nacional de Desenvolvimento Científico e Tecnológico<br>Para esta tese foram preparados quatro artigos científicos baseados em estudos de liberação de minerais de alimentos para ruminantes,

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25

Maher, Elizabeth Anne. "Atrial natriuretic factor in two canine models of ascites : cardiac release and heterogeneity of renal natriuretic response." Thesis, McGill University, 1988. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=75880.

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In response to i.v. ANF at 175 ng/kg/min, normal dogs increase sodium excretion ($ Delta$UNaV = 150 uEq/min) independent of changes in GFR and RPF. In contrast, when ANF was infused into chronic caval dogs (TIVC) or cirrhotic dogs (Cir) retaining sodium in the presence of ascites, they divided 50:50 into those who had a marked natriuretic response (responders, R) and those who had no natriuretic response (non-responders, NR). Of 46 TIVC dogs, 22 R had UnaV of 185 + 35 uEq/min and 24 NR had $ Delta$UNaV = 2 + 1 uEq/min. In 19 Cir dogs, 9 R had $ Delta$UNaV = 60 + 10 uEq/min and 10 NR had $ Delt

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26

Crosby, Chelsea Helene. "The role of individual learning and dietary preference in the consumption of the invasive Green Porcelain Crab, Petrolisthes armatus, by Native Crab Predators." The Ohio State University, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=osu1523887793938929.

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27

Nimmermark, Sven. "Odour impact : odour release, dispersion and influence on human well-being with specific focus on animal production /." Alnarp : Dept. of Agricultural Biosystems and Technology (JBT), Swedish Univ. of Agricultural Sciences, 2004. http://epsilon.slu.se/a494.pdf.

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28

Matias, Madeleine Gundayao. "Animal calcium release-activated calcium (CRAC) channels are homologous and derived from the ubiquitous Cation Diffusion Facilitators." Diss., Connect to a 24 p. preview or request complete full text in PDF format. Access restricted to UC campuses, 2008. http://wwwlib.umi.com/cr/ucsd/fullcit?p1453033.

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Thesis (M.S.)--University of California, San Diego, 2008.<br>Title from first page of PDF file (viewed June 25, 2008). Available via ProQuest Digital Dissertations. Includes bibliographical references (p. 48-51).

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29

Pellerin, Luc. "Studies on arachidonic acid release and metabolism by the 12-lipoxygenase pathway in rat brain slices." Thesis, McGill University, 1992. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=70251.

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The present work was aimed at studying the release of arachidonic acid and formation of lipoxygenase metabolites in rat brain slices maintained in vitro, as well as exploring possible physiological roles for them in the mammalian central nervous system. A particularly active 12-(S)-lipoxygenase activity was found, which could be stimulated by various stimuli including the neurotransmitters norepinephrine and glutamate. Activation of $ alpha$-adrenergic and N-methyl- scD-aspartate (NMDA) receptor subtypes appear responsible for the effect observed in each case. Arachidonic acid on the other han

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30

Syzov, Vladyslav. "Delivery of a coated bioactive from a rumen controlled-release device." The University of Waikato, 2008. http://hdl.handle.net/10289/2368.

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Ruminants possess a unique digestive system. Using the high metabolic potential of the symbiotic microflora of the rumen, ruminants are capable of digesting plant material and obtaining nutrients and energy from this process. Because of the ruminal fermentation, the most bioactives are not stable in the harsh ruminal environment. Therefore there is a need to improve the bioavailability of a bioactive by protecting it from the ruminal digestion. The formulation of protected bioactive can be delivered in the rumen in a controlled manner and over a long period of time. In this project the degree

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31

Simon, Jodie L. "Male-Female Communication in the Crayfish Orconectes Rusticus: The Use of Urinary Signals in Reproductive and Non-Reproductive Pairings." Connect to this title online, 2006. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=bgsu1148415041.

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32

Sarnecky, Brendan Andrew. "Evaluation of a Proprietary Slow-Release Oxytocin Therapy and Return of the Luteolytic Mechanism in Mares." DigitalCommons@USU, 2019. https://digitalcommons.usu.edu/etd/7704.

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Prolonging function of the corpus luteum (CL) is a method of suppressing estrus that maintains secretion of endogenous progesterone to keep mares out of heat naturally. The use of oxytocin to prolong CL function is becoming more popular. In these therapies, upregulation of cyclooxygenase-2 is inhibited, which impairs prostaglandin F2α ( PGF2α) production. Intramuscular (IM) administration of 60 IU of oxytocin once daily from 7 to 14 days after ovulation is currently the most common treatment protocol. Although that protocol is efficacious in ≥70% of treated mares, the need for daily administra

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33

Ransom, Curtis J. "Nitrogen Use Efficiency of Polymer-Coated Urea." BYU ScholarsArchive, 2014. https://scholarsarchive.byu.edu/etd/3985.

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Plants require N to complete their life cycle. Without adequate concentration of N, crops will not produce their potential yields. For turfgrass systems, N fertilizer application allows for the maintenance of functional, aesthetic, and recreational properties. However, fertilizer mismanagement is common and leads to N pollution in the environment. Controlled-release and slow-release fertilizers can enhance nitrogen (N)-use efficiency, reduce N pollution, minimize the need for repeated fertilizer applications, and reduce turfgrass shoot growth and associated costs. In order to evaluate the effe

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34

Holder, Vaughn B. "THE EFFECTS OF SLOW RELEASE UREA ON NITROGEN METABOLISM IN CATTLE." UKnowledge, 2012. http://uknowledge.uky.edu/animalsci_etds/6.

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The objective of this research was to investigate the effects of slow release urea on N metabolism in cattle. The ruminal behavior of Optigen®II and the effect of basal diet on the in situ degradability of urea and Optigen®II were evaluated. The effect of slow release urea and its interaction with degradable intake protein (DIP) level in the diet on N retention and excretion was evaluated utilizing 8 Holstein steers in a 4 x 4 Latin square experiment. In addition, the effect of slow release urea and DIP level on ruminal and systemic urea kinetics was evaluated using stable isotope techniques w

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35

Bortz, David Michael. "Transient Inactivation of the Neonatal Ventral Hippocampus Disrupts Mesolimbic Regulation of Prefrontal Glutamate Release." The Ohio State University, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=osu1352918608.

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36

George, Maryan. "Adrenaline releases level on skin-to skin touches." Thesis, Högskolan i Skövde, Institutionen för hälsovetenskaper, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:his:diva-19090.

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Human pleasant touches promote feelings of security, supportiveness, and wellbeing. Conversely, human unpleasant touches promote the body for either “fight or flight” or “short term acute stress” during emergencies, feeling of stress or danger. The promoted stress response is released from the hypothalamus by the sympathetic nerve system further to the spinal cord to reach the signals to the adrenal medulla, where stress hormones adrenaline is released. Adrenaline, which is characterized by a mimic sympathetic nerve system, interacts with α and β receptors on different organs. The aim for this

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37

Upton, Erlanda. "Development and evaluation of polymer coated urea as a potential slow-release urea supplement for ruminants." Thesis, Stellenbosch : Stellenbosch University, 1999. http://hdl.handle.net/10019.1/51199.

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Thesis (MScAgric)--Stellenbosch University, 1999.<br>ENGLISH ABSTRACT: The rate of hydrolysis of urea in the rumen of animals is a major limitation when considering the substitution of natural protein with urea in the formulation of rations. The aim of this study was to evaluate polymer coated urea prills with variable coating thickness and evaluate its potential as a slow-release NPN compound. A new slowrelease urea compound, made by coating prilled feedgrade urea with a co-polymer of urea-formaldehyde resin and a castor-coconut alkyd was initially evaluated for urea-nitrogen concentra

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38

Pantua, Homer Dadios. "Requirements for Assembly and Release of Newcastle Disease Virus-Like Particles: A Dissertation." eScholarship@UMMS, 2006. https://escholarship.umassmed.edu/gsbs_diss/242.

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The final step of paramyxovirus infection requires the assembly of viral structural components at the plasma membrane of infected cells followed by budding of virions. While the matrix (M) protein of some paramyxoviruses has been suggested to play a central role in the assembly and release of virus particles, the specific viral and host protein requirements are still unclear. Using Newcastle disease virus (NDV) as a prototype paramyxovirus, we explored the role of each of the NDV structural proteins in virion assembly and release. For these studies, we established a virus-like particle (VLP) s

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39

Carareto, Rafaela. "Uso de uréia de liberação lenta para vacas alimentadas com silagem de milho ou pastagens de capim Elefante manejadas com intervalos fixos ou variáveis de desfolhas." Universidade de São Paulo, 2007. http://www.teses.usp.br/teses/disponiveis/11/11139/tde-10032008-180721/.

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Foram conduzidos 2 estudos com vacas leiteiras no Departamento de Zootecnia da ESALQ/USP com os objetivos de avaliar a utilização de fonte de uréia de liberação lenta (Optigen ®) e ID (intervalos de desfolhas) fixos ou variáveis em pastagens de capim Elefante. No Experimento 1, foram utilizadas 32 vacas no terço médio de lactação, produzindo 20,8 kg leite dia-1 e pesando 524 kg no início do período experimental. O tratamento controle (C) continha apenas farelo de algodão como suplemento protéico. No tratamento U30, 30 % da PB do farelo de algodão foi substituída por uréia. No tratamento O30, 3

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Cruz, Camila Conceição Tomé da. "Estudo In vitro de nanocompósitos para a liberação lenta de nitrogênio sobre a alimentação animal." Universidade Federal de São Carlos, 2016. https://repositorio.ufscar.br/handle/ufscar/8734.

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Submitted by Alison Vanceto (alison-vanceto@hotmail.com) on 2017-05-09T12:45:33Z No. of bitstreams: 1 DissCCTC.pdf: 2703284 bytes, checksum: d6c01b80e9f013e4e3f0004410ab32f9 (MD5)<br>Approved for entry into archive by Ronildo Prado (ronisp@ufscar.br) on 2017-05-10T19:05:03Z (GMT) No. of bitstreams: 1 DissCCTC.pdf: 2703284 bytes, checksum: d6c01b80e9f013e4e3f0004410ab32f9 (MD5)<br>Approved for entry into archive by Ronildo Prado (ronisp@ufscar.br) on 2017-05-10T19:05:10Z (GMT) No. of bitstreams: 1 DissCCTC.pdf: 2703284 bytes, checksum: d6c01b80e9f013e4e3f0004410ab32f9 (MD5)<br>Made availabl

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Hennefer, Jordan P. "Analyses of Greater Sage-Grouse (Centrocercus urophasianus) Translocation Release Methods and Chick Survival in Strawberry Valley, Utah." Diss., CLICK HERE for online access, 2007. http://contentdm.lib.byu.edu/ETD/image/etd1754.pdf.

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Neal, Kathryn. "Nutrient Utilization, Lactational Performance, and Profitability of Dairy Cows by Feeding Protein Supplements in High-Forage Lactation Diets." DigitalCommons@USU, 2014. https://digitalcommons.usu.edu/etd/2124.

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Due to the increasing cost of soybean meal and concerns of excess N being excreted into the environment, new protein supplements have been developed. Two products that have shown potential in increasing N utilization efficiency are slow release urea (SRU; Optigen) and ruminal escape protein derived from yeast (YMP; DEMP). The objective of this study was to assess the effects of feeding these 2 supplements in high-forage [(54% of total dietary dry matter (DM)] dairy diets on nutrient utilization, feed efficiency, lactational performance of dairy cows, and their impacts on income-over feed costs

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Collins, Angela. "An investigation into the habitat, behavior and opportunistic feeding strategies of the protected Goliath grouper (Epinephelus itajara)." Scholar Commons, 2014. https://scholarcommons.usf.edu/etd/5002.

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Groupers (Epinephelidae: Epinephelinae) are apex predators within many reef communities worldwide. Grouper landings contribute significantly to global fisheries, and many populations are suffering from unsustainable levels of exploitation. The large size, site specificity and catchability of most groupers increase susceptibility to fishing pressure, and a large number of grouper species throughout the world are currently overfished. Multiple species are listed as endangered or threatened, and many have suffered local extirpations across their range. Removal of these upper level predators can s

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Guindon, Kathryn Yvonne. "Evaluating Lethal and Sub-Lethal Effects of Catch-and-Release Angling in Florida's Central Gulf Coast Recreational Atlantic Tarpon (Megalops atlanticus) Fishery." Scholar Commons, 2011. http://scholarcommons.usf.edu/etd/3134.

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Atlantic tarpon are sought after because of their fighting ability on various tackle and support a popular, lucrative and predominantly catch-and-release recreational fishery in Florida. They are not commercially harvested or consumed by the general public, therefore assessing effects of catch-and-release angling on tarpon survival is critical to a sustainable fishery. Tarpon caught on artificial breakaway jig and traditional live bait fishing charters in Boca Grande Pass (n=42) and trips from the recreational fishery of Tampa Bay (n=40) were tagged with ultrasonic transmitters and tracked up

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Carareto, Rafaela. "Fontes de nitrôgenio, níveis de forragem e métodos de processamento de milho em rações para tourinhos da raça Nelore terminados em confinamento." Universidade de São Paulo, 2011. http://www.teses.usp.br/teses/disponiveis/11/11139/tde-24052011-101403/.

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Foram realizados 2 experimentos no Departamento de Zootecnia da ESALQ/USP com o intuito de se avaliar o desempenho de tourinhos Nelore em confinamento. No experimento 1 foi avaliada a substituição da uréia (U) convencional por farelo de soja (FS) ou uréia de liberação lenta (ULL) (Optigen®) em rações de bovinos em terminação. Foram utilizados 100 tourinhos da raça Nelore (389 kg), distribuídos em 20 baias por 90 dias. As rações continham 8% de feno de Tifton (% da MS) e 65 a 69% de polpa cítrica no concentrado. Os 5 tratamentos experimentais foram assim designados (%MS): FS - ração com 5% de f

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Tye, Braden M. "Effects of Feeding High-Moisture Corn Grain with Slow-Release Urea in Dairy Diets on Lactational Performance, Energy and Nitrogen Utilization, and Ruminal Fermentation Profiles by Lactating Cows." DigitalCommons@USU, 2016. https://digitalcommons.usu.edu/etd/4923.

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The objective of this experiment was to determine if nutrient utilization and energy partitioning by lactating dairy cows would differ in response to dietary corn grain (CG) types [steam-flaked corn (SFC) vs. high-moisture corn (HMC)] and to test if the types of CG would interact with slow-release urea (SRU) on lactational performance and energy utilization. Eight multiparous Holstein cows (32 ± 8.2 days-in-milk) were used in a duplicated 4 × 4 Latin square with one square consisting of ruminally cannulated cows. A 2 × 2 factorial arrangement was used to test 4 dietary treatments: SFC without

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Faversani, Jessica Carolina. "Metais pesados em solo e plantas em área com longo histórico de aplicações de fontes orgânicas e mineral de nutrientes." Universidade Federal de Santa Maria, 2014. http://repositorio.ufsm.br/handle/1/5601.

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior<br>The application of organic and mineral fertilizers in agricultural areas, especially, in no-till system and over the years, can promote increased levels of heavy metals and as arsenic (As), cadmium (Cd), lead (Pb), chromium (Cr), copper (Cu), zinc (Zn) and nickel (Ni) in the soil, which may be contaminants and ground water but may also be absorbed and accumulated in plants, and even exported by the grain entering the food chain. The aim of this study was to evaluate how changes of heavy metals in the soil, caused by use of several

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Romeo, C. R. "PARASITES AND BIOLOGICAL INVASIONS: ALIEN GREY SQUIRREL (SCIURUS CAROLINENSIS) AND NATIVE RED SQUIRREL (S. VULGARIS) AS MODEL SYSTEM." Doctoral thesis, Università degli Studi di Milano, 2014. http://hdl.handle.net/2434/232973.

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Parasites may play an important role in biological invasions through two main mechanisms: enemy release and apparent competition. First, alien species may lose part of their parasite fauna during the introduction process and this release from natural enemies may enhance their performances in the new range. Furthermore, parasites may mediate the competition between alien and native species: invaders may transmit alien parasites to naive native species (spillover) or acquire local parasites, increasing their environmental abundance and their impact on native hosts (spillback) and/or altering th

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Papet, Léo. "Localisation des sons chez les crocodiliens." Thesis, Lyon, 2019. http://www.theses.fr/2019LYSE1337.

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Les crocodiliens ont développé des capteurs très précis pour sonder leur environnement jusqu'à atteindre leur position de super prédateur. Ces capacités sensorielles sont primordiales en situation de chasse mais elles sont également nécessaires pour assurer les interactions sociales entre partenaires sexuels ou entre parents et jeunes. Depuis l'intérieur des œufs, les embryons matures utilisent la communication acoustique pour synchroniser l'éclosion. Dans leurs premières années, les jeunes vocalisent en cas de danger pour solliciter la protection de leurs parents et assurer la cohésion du gro

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Jumeau, Jonathan. "Les possibilités de dispersion et éléments d'habitat-refuge dans un paysage d'agriculture intensive fragmenté par un réseau routier dense : le cas de la petite faune dans la plaine du Bas-Rhin." Thesis, Strasbourg, 2017. http://www.theses.fr/2017STRAJ120/document.

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La fragmentation des paysages et des habitats induite par les infrastructures linéaires de transport terrestres est une des principales causes de la perte de biodiversité actuelle. Parmi ces infrastructures, la route est un acteur majeur de fragmentation, d’autant plus qu’elle possède des effets propres dus au trafic circulant qui induit des collisions véhicule-faune et une pollution des paysages. Afin de diminuer ces effets négatifs, des mesures de réduction sont mises en place, notamment des passages à faune permettant de faire traverser la faune de part et d’autre des voies. La route crée a

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