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Rozprawy doktorskie na temat „Temperate production”

Autor: Grafiati

Data publikacji: 2 czerwca 2025

Data aktualizacji: 31 lipca 2025

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1

Fannon-Osborne, Amy Gail. "Hair Sheep Production in Temperate, Deciduous Appalachian Silvopastures." Thesis, Virginia Tech, 2012. http://hdl.handle.net/10919/76825.

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Silvopastoral management has potential to diversify and increase the output from livestock production systems. Silvopasture production offers solutions to many management issues associated with grazing systems in the Appalachian region. Several tree species have been proposed for silvopastures in humid temperate regions, but little data comparing animal performance from systems with different deciduous tree species are available. Forage and animal performance was compared from open systems (i.e., no trees) with that from silvopastures containing 13-yr-old honeylocust (Gleditsia triacanthos)

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Wales, Shea B. "MECHANISMS UNDERLYING PRODUCTION STABILITY IN TEMPERATE DECIDUOUS FORESTS." VCU Scholars Compass, 2019. https://scholarscompass.vcu.edu/etd/5803.

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A persistent and reliable future terrestrial carbon (C) sink will depend on how stable forest production is under more variable climate conditions. We examined how age, forest structure, and disturbance history relate to the interannual variability of above-ground wood net primary production (NPPw). Our site in northern Michigan spans two experimental forest chronosequences and three late successional stands; the chronosequences have distinct disturbance histories, originating following either clear cut harvesting (“Cut Only”) or clear cut harvesting and fire (“Cut and Burn”), and range from 2

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3

Stephens, Christine Elizabeth. "Marine fish carbonates : contribution to sediment production in temperate environments." Thesis, University of Exeter, 2016. http://hdl.handle.net/10871/26195.

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In the past, oceans have strongly influenced atmospheric CO2 levels through organic and inorganic carbon cycling. The inorganic carbon pump relies on the formation of calcium carbonate which releases CO2 into the surface ocean and traps alkalinity in solid form which sinks to deeper ocean layers and sediments. After sinking, calcium carbonate can either then become trapped in the sediments or dissolve increasing the alkalinity of deeper ocean layers. The net effect is of acidifying surface oceans and encouraging release of CO2 to the atmosphere. The present thesis focuses on marine teleost (bo

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Buergler, Alicia Lenore. "Forage Production and Nutritive Value in a Temperate Appalachian Silvopasture." Thesis, Virginia Tech, 2004. http://hdl.handle.net/10919/9923.

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Integrating trees into pasture may be an effective management tool to improve water, nutrient, and light allocation and increase total system productivity in Appalachia. We tested this hypothesis in a silvopasture near Blacksburg, VA. In 1995, black walnut and honey locust trees were planted within plots (r=3) of predominantly tall fescue pasture. Across a 12% slope, trees were planted to create treatments of low, medium, and high tree densities at shoulder, mid, and toe slope positions within plots of honey locust and black walnut. Sampling sites (n=54) under tree density and slope position c

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5

Olave, Rodrigo Javier. "Tree seedling production for multifunctional land use systems in cool temperate climates." Thesis, Queen's University Belfast, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.426722.

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Hemsley, Victoria. "Primary production and nitrate budgets in the temperate North Atlantic estimated from ocean gliders." Thesis, University of Southampton, 2016. https://eprints.soton.ac.uk/403358/.

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Phytoplankton in the ocean are a key component of the global carbon cycle and the base of most marine food webs. They contribute approximately one half of total global primary production, but are restricted to the euphotic zone, where sunlight is sufficient for photosynthesis. Due to ocean stratification nutrients become limiting in the near-surface ocean and the distribution of phytoplankton is influenced by the upward flux of nutrients from below. In situ measurements of primary production and nutrient fluxes are generally sparse and questions still remain about quantifying how the physical

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7

Bellamy, Amber R. "Sources and Ages of Carbon and Organic Matter Supporting Macroinvertebrate Production in Temperate Streams." The Ohio State University, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=osu1483481008330315.

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Panton, Anouska. "The impact of physical processes on primary and secondary production in temperate shelf seas." Thesis, University of Liverpool, 2012. http://livrepository.liverpool.ac.uk/9713/.

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The shelf seas account for only 9% of the surface area of the global ocean, yet are estimated to be responsible for 16% of global primary productivity and 47% of global annual carbon export. While the importance of these seas in the marine carbon cycle is well-recognised, the relationship between the physical environment and the magnitude and fate of biological production is still largely undetermined. Using a range of approaches, this project examined the relationship between physical processes and biological carbon flow over various time and space scales in a temperate shelf sea. Autonomous

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9

An, Ji Young. "Fine root dynamics and their contribution to carbon fixation in temperate forests of Japan and Korea." Kyoto University, 2018. http://hdl.handle.net/2433/232364.

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Ferguson, April A. "Autotrophic and heterotrophic bacterial carbon production in two temperate lakes with contrasting food web structure." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp03/MQ33481.pdf.

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McCormick, S. "The nature and causes of spatial variability in forage grass production in cool temperate climes." Thesis, Queen's University Belfast, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.419366.

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12

Charoenvattanaporn, Jiraporn. "Processes influencing phytoplankton growth and primary production in shallow temperate estuary Christchurch Harbour, United Kingdom." Thesis, University of Southampton, 2016. https://eprints.soton.ac.uk/403350/.

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The aim of this research project was to identify the factors controlling the phytoplankton community and primary production in the shallow temperate estuary of Christchurch Harbour and the two river systems flowing into the estuary. Christchurch Harbour is a small shallow micro-tidal enclosed estuary situated on the south coast of England. It is fed by the rivers Stour and Hampshire Avon, and exchanges with coastal waters through a narrow channel at Mudeford. An intensive programme of monitoring both the water quality and phytoplankton communities was undertaken at weekly intervals from April

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13

Andy, Saryoko. "Genotypic Variation in Yield Performance under Tropical Environments of Soybeans with Temperate and Tropical Origins." Kyoto University, 2018. http://hdl.handle.net/2433/232342.

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Copertino, Margareth. "Production ecology and ecophysiology of turf algal communities on a temperate reef (West Island, South Australia)." Title page, contents and abstract only, 2002. http://web4.library.adelaide.edu.au/theses/09PH/09phc782.pdf.

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Includes bibliographical references (leaves 235-258). Estimates the primary production and investigates the photosynthetic performance of temperate turfs at West Island, off the coast of South Australia. These communities play a fundamental role in reef ecology, being the main source of food for grazers, both fishes and invertebrates. Turfs also have an important function in benthic algal community dynamics, being the first colonizers on disturbed and bare substratum.

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15

Soars, Natalie Anne. "Habitat soundscapes and sound production by tropical and temperate sea urchins and the swimming behaviour of their larvae." Thesis, The University of Sydney, 2014. http://hdl.handle.net/2123/13923.

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The distribution, abundance and behaviour of soniferous organisms influence the spatial variability of underwater noise characteristics or ‘soundscape’. In this way, the soundscape provides useful information on habitat and assemblages that enables navigation in larvae and can be used for environmental assessment and monitoring. Despite the ecological importance of sea urchins and evidence they produce sound of their sound, knowledge gaps remain regarding the role of adult and larval sea urchins in acoustic ecology. In this thesis the sounds produced by 3 temperate and 3 tropical species of se

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16

Savelli, Raphaël. "Study of microphytobenthos dynamics in temperate intertidal mudflats by using physical-biological coupled modelling and remote sensing data analysis." Thesis, La Rochelle, 2019. http://www.theses.fr/2019LAROS030.

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La production primaire (PP) élevée des vasières intertidales aux latitudes tempérées est principalement assurée par le microphytobenthos (MPB), qui soutient les réseaux trophiques benthiques et pélagiques. Dans cette thèse, nous utilisons un modèle couplé physique-biologie pour étudier la variabilité spatio-temporelle de la dynamique du MPB sur une vasière intertidale de la côte Atlantique française. Le modèle simule explicitement la biomasse du MPB et du brouteur Peringia ulvae. Les résultats fournissent des conclusions clés sur la dynamique du MPB. À l’hiver et au printemps, une lumière et u

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17

SCHAEFER, Holger Christian. "Production and decomposition dynamics of extraradical hyphae of arbuscular mycorrhizal fungi in warm-temperate forests of Chamaecyparis obtusa (hinoki cypress)." Kyoto University, 2019. http://hdl.handle.net/2433/243322.

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18

Grant, Kerstin [Verfasser], and Anke [Akademischer Betreuer] Jentsch. "Sensitivity of mesic temperate grassland to increased climate variability : biomass production, forage quality and plant-plant interactions / Kerstin Grant. Betreuer: Anke Jentsch." Bayreuth : Universität Bayreuth, 2016. http://d-nb.info/1108404804/34.

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Kazanjian, Garabet. "Primary production in shallow freshwater systems amid a rapidly changing world." Doctoral thesis, Humboldt-Universität zu Berlin, 2019. http://dx.doi.org/10.18452/20561.

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Kleine, flache Gewässer gelten als sogenannte „hotspots“ der Primärproduktion und Kohlenstoffbindung. Diese Doktorarbeit zielt darauf ab, die Primärproduktion verschiedener kleiner Gewässer zu quantifizieren sowie die Mechanismen, die den Kohlenstoffkreislauf dieser Systeme beeinflussen, zu analysieren. Der Fokus liegt dabei auf dem Einfluss globaler Veränderungen, die diese Mechanismen verändern können Im ersten Abschnitt wurde die Primärproduktion (PP) in kleinen, temporären Söllen untersucht, die sehr anfällig für Störungen sind. Ich konnte zeigen, dass die PP der Sölle im Sommer außergewö

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de, Bettignies Thibaut. "Sources and supply of kelp detritus : quantifying mechanisms of production." Thesis, Edith Cowan University, Research Online, Perth, Western Australia, 2013. https://ro.ecu.edu.au/theses/564.

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In temperate waters, rocky reefs dominated by extremely productive kelp beds export considerable primary production. Despite the extensive body of work on kelp detritus as a trophic subsidy, many questions remain about the production of this detritus. The aim of this thesis was to determine the rate and mechanisms of kelp detritus production, for Ecklonia radiata, the dominant kelp species in temperate Australia. Most of the work was conducted in Marmion Lagoon located 20 km North of Perth, south-western Western Australia, a region strongly influenced by oceanic swell and winter storms. The st

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21

Pätzig, Marlene [Verfasser], Brigitte [Akademischer Betreuer] Nixdorf, and Karl-Otto [Akademischer Betreuer] Rothhaupt. "Effect of lakeshore modification on structure and secondary production of macroinvertebrates in a large temperate lowland lake of Northeast Germany / Marlene Pätzig ; Brigitte Nixdorf, Karl-Otto Rothhaupt." Cottbus : BTU Cottbus - Senftenberg, 2016. http://d-nb.info/1114284270/34.

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Hewage, Renuka Priyadarshani Suddapuli [Verfasser], and Eva-Maria [Akademischer Betreuer] Pfeiffer. "Effect of charred digestate (biochar) and digestate on soil organic carbon and nutrients in temperate bioenergy crop production systems / Renuka Priyadarshani Suddapuli Hewage. Betreuer: Eva-Maria Pfeiffer." Hamburg : Staats- und Universitätsbibliothek Hamburg, 2016. http://d-nb.info/1095766589/34.

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Cebrián, Piqueras Miguel Angel Verfasser], Michael [Akademischer Betreuer] [Kleyer, and Boris [Akademischer Betreuer] Schröder-Esselbach. "Trade-offs and synergies between forage production, species conservation and carbon stocks in temperate coastal wet grasslands : an ecosystem services and process-based approach / Miguel Angel Cebrián Piqueras ; Michael Kleyer, Boris Schröder-Esselbach." Oldenburg : BIS der Universität Oldenburg, 2017. http://d-nb.info/1138027537/34.

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Xi, Nian-Xun. "Effects of patchy nitrogen inputs and soil nitrogen heterogeneity on grassland structure and function." Thesis, Clermont-Ferrand 2, 2015. http://www.theses.fr/2015CLF22542/document.

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A l’échelle mondiale, les prairies fournissent une grande variété de services écosystémiques et sont le support économique de nombreux systèmes d’élevage. Dans un contexte global éminemment changeant, une meilleure compréhension de la structure et du fonctionnement des prairies est incontournable pour proposer à la fois des gestions plus durables des ressources et promouvoir la fourniture de services écosystémiques diversifiés par ces écosystèmes. Les prairies étant des écosystèmes dynamiques et hétérogènes, notre capacité à prédire leur fonctionnement et leurs trajectoires de réponse à un fac

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25

Midtsjø, Alexander. "Power Production from Low Temperature Heat Sources." Thesis, Norwegian University of Science and Technology, Department of Energy and Process Engineering, 2009. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-9902.

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<p>As part of the energy recovery part of the ROMA (Resource Optimization and recovery in the Materials industry) project, a laboratory prototype power production system is being built and completed in 2009. The laboratory prototype is based on a new technology for power production from low to medium temperature heat sources (the off gas from electrolysis cells in the aluminum industry) where CO2 is used as a working medium in a trans-critical Rankine cycle. The laboratory rig consists of the power cycle with a prototype expander as the core unit, an air loop to provide the heat, and an ethyle

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Pfaff, Michael. "Power Production from Low Temperature Heat Sources." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for energi- og prosessteknikk, 2010. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-18330.

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SummaryThis Master Thesis is a conclusion on work done as part of the Resource Optimizationand recovery in the Materials industry project (Roma). This project is involved in thedevelopment of a new technology for power production from low temperature heat sourcesfor off gases from aluminum production cells. The technology is based on an transcriticalRankine cycle with CO2 as a working fluid, as the work recovery circuit. The center ofthe test facility is the expander, a prototype provided by Obrist Engineering . 81 testswere perfomed to investigate the behavoir of the expander cycle. Effect of

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Aycock, William. "Cotton Production in Southern Illinois: Reviving a Crop." OpenSIUC, 2019. https://opensiuc.lib.siu.edu/dissertations/1706.

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Cotton production came to a halt in Southern Illinois in 1974 after the last crop was harvested. Many factors went into the death of cotton in Southern Illinois. My dissertation addresses the factors that halted cotton production in 1974, and new technologies that will enable farmers to grow cotton again in 2019. Temperature and rainfall are two important factors that affect the growth of cotton. Once cotton is re-introduced into Southern Illinois, an infrastructure with a well-trained workforce will need to be in place to sustain this new industry. This study was motivated by three resea

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Eccleston, Kelcey Lynne. "Solid oxide steam electrolysis for high temperature hydrogen production /." St Andrews, 2007. http://hdl.handle.net/10023/322.

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Eccleston, Kelcey L. "Solid oxide steam electrolysis for high temperature hydrogen production." Thesis, University of St Andrews, 2007. http://hdl.handle.net/10023/322.

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This study has focused on solid oxide electrolyser cells for high temperature steam electrolysis. Solid oxide electrolysis is the reverse operation of solid oxide fuel cells (SOFC), so many of the same component materials may be used. However, other electrode materials are of interest to improve performance and efficiency. In this work anode materials were investigated for use in solid oxide electrolysers. Perovskite materials of the form L₁₋ｘSrｘMO₃ , where M is Mn, Co, or Fe. LSM is a well understood electrode material for the SOFC. Under electrolysis operation LSM performed well and no inter

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Karra, Glykeria. "Production of defects at phase transitions." Thesis, Imperial College London, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.298337.

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Gamrod, Erin Elizabeth. "Flowering Control and Production of Strobilanthes dyerianus Mast. (Persian Shield)." Thesis, Virginia Tech, 2003. http://hdl.handle.net/10919/31819.

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Grown for its distinctive foliage, Strobilanthes dyerianus is a popular bedding and container plant. A problem in production is that over-wintered stock plants often flower. Once the plant becomes reproductive, stem elongation slows and floral buds arise from every node, rendering the plants useless for propagation. The objectives of this research were to examine the effectiveness of manipulating environmental factors and the application of ethephon on preventing floral bud initiation, as well as determine optimal nitrogen rate for stock plant culture. The first experiment was performed i

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Sivertsson, Viktor. "Hydrogen production using high temperature nuclear reactors : A feasibility study." Thesis, Uppsala University, Applied Nuclear Physics, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-120742.

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<p>The use of hydrogen is predicted to increase substantially in the future, both as chemical feedstock and also as energy carrier for transportation. The annual world production of hydrogen amounts to some 50 million tonnes and the majority is produced using fossil fuels like natural gas, coal and naphtha. High temperature nuclear reactors (HTRs) represent a novel way to produce hydrogen at large scale with high efficiency and less carbon footprint. The aim of this master thesis has been to evaluate the feasibility of HTRs for hydrogen production by analyzing both the reactor concept and its

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Chang, Le S. M. Massachusetts Institute of Technology. "High temperature ceramic membrane for CO₂ reuse and syngas production." Thesis, Massachusetts Institute of Technology, 2013. http://hdl.handle.net/1721.1/85505.

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Thesis: S.M., Massachusetts Institute of Technology, Department of Mechanical Engineering, 2013.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (pages 140-146).<br>In recent years, membrane based technologies have attracted much attention thanks to their simplicity in reactor design. The concept proposed is to use mixed ionic-electronic conducting membrane (MIEC) in CO2 reuse and syngas production by taking the advantage of low quality energy resource. The membrane under investigation is a La0,9Cao01FeO3 -6 (LCF) perovskite membrane. Membranes with perovskite s

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Shah, Parag S. ""Separation techniques using temperature gradient and their application in biodiesel production" /." free to MU campus, to others for purchase, 2004. http://wwwlib.umi.com/cr/mo/fullcit?p1426102.

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Tacarindua, Custodio Ramos Paulo. "Effects of Increased Temperature on Growth and Seed Production of Soybean." Kyoto University, 2013. http://hdl.handle.net/2433/180632.

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Kyoto University (京都大学)<br>0048<br>新制・課程博士<br>博士(農学)<br>甲第17964号<br>農博第2032号<br>新制||農||1019(附属図書館)<br>学位論文||H25||N4808(農学部図書室)<br>30794<br>京都大学大学院農学研究科農学専攻<br>(主査)教授白岩立彦, 教授奥本裕, 教授稲村達也<br>学位規則第4条第1項該当

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Іванович, Рудик Юрій, and Andrew Dominik. "Considering of Temperature Component Parameters by Metrological Characteristics of Safety Production." Thesis, Ivano-Frankivsk : Publisher Vasyl Stefanyk Precarpathian National University, 2017, 2017. http://hdl.handle.net/123456789/3749.

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Welman, Shaun. "Seasonal changes in the heat production of an African small mammal, Rhabdomys pumilio." Thesis, Nelson Mandela Metropolitan University, 2012. http://hdl.handle.net/10948/21417.

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Endothermy refers to the ability of an individual to produce heat from internal sources, and allows animals to maintain a body temperature that is higher than their external environment. Although much is known about the benefits of endothermy, its origin is highly debated. Nonetheless, due to environmental variation, endotherms have to regulate their heat production (thermogenesis) in order to remain normothermic. An endotherms regulatory response seems to be body size dependent. Keeping warm during cold periods is energetically expensive, and for small mammals this is exacerbated by their hig

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Parkison, Adam Joseph. "Hydride production in zircaloy-4 as a function of time and temperature." [College Station, Tex. : Texas A&M University, 2008. http://hdl.handle.net/1969.1/ETD-TAMU-2788.

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Yang, Xuedi. "Cathode development for solid oxide electrolysis cells for high temperature hydrogen production." Thesis, University of St Andrews, 2010. http://hdl.handle.net/10023/979.

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This study has been mainly focused on high temperature solid oxide electrolysis cells (HT-SOECs) for steam electrolysis. The compositions, microstructures and metal catalysts for SOEC cathodes based on (La₀.₇₅Sr₀.₂₅)₀.₉₅Mn₀.₅Cr₀.₅O₃ (LSCM) have been investigated. Hydrogen production amounts from SOECs with LSCM cathodes have been detected and current-to-hydrogen efficiencies have been calculated. The effect of humidity on electrochemical performances from SOECs with cathodes based on LSCM has also been studied. LSCM has been applied as the main composite in HT-SOEC cathodes in this study. Cell

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VILLELA, MARCOS JOSE REI. "TEMPERATURE BEHAVIOR ANALYSIS OF OIL PRODUCTION SYSTEMS: DRY AND WET COMPLETION COMPARISON." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2004. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=6084@1.

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PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO<br>Cerca de 50 por cento das reservas brasileiras de hidrocarbonetos estão localizadas na plataforma continental em lâminas de água superiores a mil metros. As temperaturas congelantes do fundo do mar tornam os problemas inerentes ao escoamento da produção de petróleo, ainda mais críticos. Entretanto, os desafios da garantia de escoamento, não são os únicos obstáculos para a produção de petróleo em águas ultra-profundas. Além dos aspectos relacionados à geologia e fatores econômicos, a decisão de desenvolvimento de um campo de petróleo

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Schanze, Julian J. (Julian Johannes). "The production of temperature and salinity variance and covariance : implications for mixing." Thesis, Massachusetts Institute of Technology, 2013. http://hdl.handle.net/1721.1/79294.

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Thesis (Ph. D.)--Joint Program in Physical Oceanography (Massachusetts Institute of Technology, Department of Earth, Atmospheric, and Planetary Sciences; and the Woods Hole Oceanographic Institution), 2013.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (p. 187-195).<br>Large-scale thermal forcing and freshwater fluxes play an essential role in setting temperature and salinity in the ocean. A number of recent estimates of the global oceanic freshwater balance as well as the global oceanic surface net heat flux are used to investigate the effects of heat- and fr

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Paschkewitz, Timothy Michael. "Ammonia Production at Ambient Temperature and Pressure: An Electrochemical and Biological Approach." Diss., University of Iowa, 2012. https://ir.uiowa.edu/etd/4893.

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The majority of power generated worldwide is from combustion of fossil fuels. The sustainability and environmental impacts of this non renewable process are severe. Alternative fuels and power generation systems are needed, however, to cope with increasing energy demands. Ammonia shows promise for use in power generation, however it is costly to produce and very few methods of using it as a fuel are developed. To address the need for alternative methods of ammonia synthesis, this research designed and tested a bioelectroch

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Tarom, Nematollah. "Numerical modelling to evaluate temperature profile along an injection or production wellbore." Thesis, Curtin University, 2013. http://hdl.handle.net/20.500.11937/482.

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This study developed numerical model to predict the flowing wellbore temperature profile (FWTP) of injection/production well for single and multiphase flow. A computer simulator, named WTP was developed employing this model. Case studies and sensitivity results demonstrated that: the simulator can be used as a powerful tool to analyse FWTP; and the behaviour and nature of dependency of FWTP is very complex. Such behaviour can be further influenced by many fluid and well related parameters.

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Farage, P. K. "Chilling and freezing effects on photosynthesis and production in field crops with particular reference to photoinhibition." Thesis, University of Essex, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.383552.

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Edström, Mattias. "Methane production in Swedish freshwater lakes at different temperatures : -A laboratory study." Thesis, Linköpings universitet, Tema Miljöförändring, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-165858.

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In this study, incubations of sediments from three Swedish lakes, Parsen, Södra Teden, and Venasjön, were made to examine CH4 production during different temperatures. The incubations took place in two different climate rooms, one with a decreasing temperature and one with an increasing temperature with analyses made on the temperature levels around 10 and 20°C. Samples were taken and analyzed in a gas chromatograph. Results from the incubations ranged from -3,72 μmol m-2 d-1 up to 10,54 μmol m-2 d-1. A Mann Whitney test were made to test the statistical hypothesis if there were any difference

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Jornaz, Mustapha I. "The Mechanics of the drawing of polygonal sections from round at elevated temperature." Thesis, Aston University, 1991. http://publications.aston.ac.uk/11886/.

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Economic factors such as the rise in cost of raw materials, labour and power, are compelling manufacturers of cold-drawn polygonal sections, to seek new production routes which will enable the expansion in the varieties of metals used and the inclusion of difficult-to-draw materials. One such method generating considerable industrial interest is the drawing of polygonal sections from round at elevated temperature. The technique of drawing mild steel, medium carbon steel and boron steel wire into octagonal, hexagonal and square sections from round at up to 850 deg C and 50% reduction of area in

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Han, Xiangmin. "CONTINUOUS PRODUCTION OF MICROCELLULAR FOAMS." The Ohio State University, 2003. http://rave.ohiolink.edu/etdc/view?acc_num=osu1041275301.

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Gallagher, Kevin Gregory. "Challenges in low-temperature fuel cells." Diss., Georgia Institute of Technology, 2009. http://hdl.handle.net/1853/37264.

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Low-temperature fuel cells (LTFC) such as phosphoric acid fuel cells (PAFC) and proton exchange membrane fuel cells (PEMFC) are a promising electrochemical energy system for the conversion of hydrogen to electricity. Many challenges must be overcome before commercialization is possible. This dissertation focuses on the degradation of carbon catalyst supports and PEMFC water management. Kinetic studies are presented on the structure-reactivity relationship including an in-depth study of commercially available and model carbons. A mechanism and numerical model of the electrochemical oxidation of

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Sanches, José Afonso. "Understanding the dynamics of a tunnel oven : Use of infrared sensors to measure the temperature of the conveyor belt in a tunnel oven used in bread production." Thesis, Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-70363.

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During the continuous production of bread sometimes there are problems that lead to interruptions in the production and consequently to quality problems. One such problem is the bread burning in the contact area between the bread and the conveyor belt. In order to understand the problem and to know how to quantify it, it is necessary to understand what a thermodynamic system is and what types of systems exist, how the various types of heat transfer are processed, how to measure the temperature of an object by infrared radiation and some mathematical methods such as the least square root method

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Nell, Annalien. "Study of the plasma based production of tetrafluoroethylene." Thesis, Stellenbosch : Stellenbosch University, 1999. http://hdl.handle.net/10019.1/51440.

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Thesis (MIng) --Stellenbosch University, 1999.<br>ENGLISH ABSTRACT: A method was developed at the Atomic Energy Corporation of South Africa (AEC) for the plasma based production of tetrafluoroethylene (TFE). The process involves the feeding of carbon particles into a direct-current CF4 plasma. The resultant plasma gas is quenched rapidly to obtain TFE and other fluorocarbons. The mixing of the particles with the plasma gas is very important in order to achieve a high C:F-ratio in the gas phase, which promotes the desired reactions. The gas enthalpy in the reactor is a governing factor in

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