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Dissertations / Theses on the topic 'Urea production'

Author: Grafiati

Published: 10 March 2023

Last updated: 26 July 2025

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1

Wheeler, Robert Alec. "Urea production and recycling in surgical neonates during convalescence." Thesis, University of Southampton, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.316464.

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2

Medeiros, João A. S. "Management alternatives for urea use in corn and wheat production." Diss., Columbia, Mo. : University of Missouri-Columbia, 2006. http://hdl.handle.net/10355/4533.

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Thesis (M.S.)--University of Missouri-Columbia, 2006.<br>The entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file. Title from title screen of research.pdf file viewed on (February 9, 2007) Includes bibliographical references.

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3

Schiller, Tamar Marie. "Urea production capacity in the wood frog (Rana sylvatica) varies with season and experimentally induced hyperuremia." Oxford, Ohio : Miami University, 2007. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=miami1196441446.

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4

Yan, Wei. "Nickel-based Catalysts for Urea Electro-oxidation." Ohio University / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1391419479.

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5

Xie, Rongjing. "Animal manures and urea as nitrogen sources for corn production in Québec." Thesis, McGill University, 1985. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=64482.

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6

Schiller, Tamar M. "Urea production capacity in the wood frog (Rana sylvatica) varies with season and experimentally induced hyperuremia." Miami University / OhioLINK, 2007. http://rave.ohiolink.edu/etdc/view?acc_num=miami1196441446.

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7

Schindler, Frank Vincent. "Redistribution and fate of applied ??N-enriched urea under irrigated continuous corn production." Thesis, North Dakota State University, 1996. https://hdl.handle.net/10365/28973.

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Understanding the redistribution and fate of N is essential for justification of Best Management Practices (BMP). This project was conducted on a Hecla fine sandy loam (sandy, mixed, Aquic Haploboroll) soil at the BMP field site near Oakes, North Dakota. One objective of this investigation was to evaluate the residence times of N03- -N in 20 undisturbed lysimeters and its infiltration time through the soil profile to tile drains. Corn (Zea mays L.) was fertilized with 135 kg N ha -1 as ??N-enriched urea plus 13.5 and 48.1 kg N ha -1 preplant for 1993 and 1994, respectively. Urea-N was band app

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8

King, Rebecca Lynne. "Investigation of Anode Catalysts and Alternative Electrolytes for Stable Hydrogen Production from Urea Solutions." Ohio University / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1275514221.

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9

Ottman, M. J. "Use of Agrotain to Prevent Urea Volotilization in Irrigated Wheat Production, Casa Grande 1996." College of Agriculture, University of Arizona (Tucson, AZ), 1997. http://hdl.handle.net/10150/202455.

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10

Lu, Fei. "Electrochemically Induced Urea to Ammonia on Ni Based Catalyst." Ohio University / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1502235953529178.

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11

Moore, Jeffrey Allen. "Comparison of ESN, urea, and aqua ammonia as sources of nitrogen for corn production in Iowa." [Ames, Iowa : Iowa State University], 2008.

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12

Kgole, M. L. (Matlou Lebogang). "Factors affecting milk urea nitrogen and its relationships with production traits in South African Holstein cattle." Diss., University of Pretoria, 2013. http://hdl.handle.net/2263/41116.

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The efficiency of utilization of dietary nitrogen can be monitored using milk urea nitrogen (MUN). Overfeeding or underfeeding of protein can be identified through the observation of deviations from target MUN concentrations. This will assist in lowering feed costs of dairy farms, and improving nutrition management of herds. Higher efficiency of utilization of dietary nitrogen might result in a reduction in environmental pollution. Non-genetic factors affecting variation in MUN were herd-test-day (HTD), lactation stage and year of calving. The contribution of HTD was the highest, ranging from

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13

Dahabieh, Matthew Solomon. "Metabolic engineering of industrial yeast strains to minimize the production of ethyl carbamate in grape and Sake wine." Thesis, University of British Columbia, 2008. http://hdl.handle.net/2429/790.

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During alcoholic fermentation Saccharomyces cerevisiae metabolizes L-arginine to ornithine and urea. S. cerevisiae can metabolize urea through the action of urea amidolyase, encoded by the DUR1,2 gene; however, DUR1,2 is subject to nitrogen catabolite repression (NCR) in the presence of high quality nitrogen sources during fermentation. Being cytotoxic at high concentrations, urea is exported into wine where it spontaneously reacts with ethanol, and forms the carcinogen ethyl carbamate (EC). Urea degrading yeast strains were created by integrating a linear cassette containing the DUR1,2 gene

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14

Malate, Andries. "Replacing sunflower oilcake with Sericea lespedezaand/or urea on feed digestibility and milk production of Saanen goats." Diss., University of Pretoria, 2017. http://hdl.handle.net/2263/63293.

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In conditions where supplementation of poor quality diets is a major challenge, forage legumes such as Sericea lespedeza can be a good alternative supplement for protein at lower cost than most commercial concentrates. From studies done on Sericea lespedeza it is found plausible and valuable to supplement urea with Sericea lespedeza to strategically combat the deleterious effect of condensed tannins in the Sericea lespedeza and provide nitrogen in the rumen. This study was aimed to evaluate the effect of replacing sunflower oilcake with urea (a rumen degradable protein RDP source) or Ser

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15

Villalba, Hugo Abelardo González. "Blending polymer-sulfur coated and NBPT-treated urea to improve nitrogen use efficiency and grain yield in corn production systems." Universidade de São Paulo, 2018. http://www.teses.usp.br/teses/disponiveis/11/11140/tde-14082018-100857/.

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Blends of controlled release and stabilized nitrogen (N) fertilizer represent an alternative to provide N at all corn growth stages, and is an option to reduce costs compared to the use of solely controlled release N. In this context, field experiments were conducted in Southeast Brazil with the use of a blend of polymer-sulfur coated urea (PSCU) and NBPT-treated urea (NBPTU) at a 70:30 ratio, applied at corn planting and incorporated into the soil. The objectives of the study were: i) to quantify and measure each fertilizer-derived N fate in the plants, and determine the nitrogen recovery eff

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16

Eriksson, Torsten. "Milk production from leguminous forage, roots and potatoes : effects on microbial protein supply and nitrogen efficiency /." Uppsala : Dept. of Animal Nutrition and Management, Swedish Univ. of Agricultural Sciences, 2003. http://epsilon.slu.se/a422.pdf.

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17

Armstrong, Christen Taylor. "Nitrogen Isotope Fractionation and Toxin Production during The Uptake of Micromolar Concentrations of Nitrate, Ammonium, and Urea By A Marine Dinoflagellate." W&M ScholarWorks, 2017. https://scholarworks.wm.edu/etd/1499449867.

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Despite an increased global interest in harmful algal bloom (HAB) species and eutrophication, the relationship between nutrient sources and changes in species composition or toxicity remains unclear. Stable isotopes are routinely used to identify and track nitrogen (N) sources to water bodies, as sources can be differentiated based on stable isotope values. While literature is available describing N fractionation by diatoms and coccolithophores, data are greatly lacking regarding isotope fractionation by dinoflagellates. Here we investigate the fractionation of nitrogen isotopes by saxitoxin-p

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18

Ouyang, Duosheng. "New fertilizer combinations for improved nitrogen and phosphorus use efficiency and reduced environmental damage in corn production." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/tape15/PQDD_0004/NQ30353.pdf.

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19

George, Mary. "Urea and Non-Protein Nitrogen Metabolism in Infants : With Special Reference to the Sudden Infant Death Syndrome (SIDS)." Doctoral thesis, Uppsala : Acta Universitatis Upsaliensis : Univ.-bibl. [distributör], 2001. http://publications.uu.se/theses/91-554-5141-1/.

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20

Nascimento, Rildo Santana do [UNESP]. "Fontes e épocas de aplicação de nitrogênio em feijoeiro de inverno em sistema plantio direto." Universidade Estadual Paulista (UNESP), 2008. http://hdl.handle.net/11449/98912.

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Made available in DSpace on 2014-06-11T19:29:45Z (GMT). No. of bitstreams: 0 Previous issue date: 2008-02-11Bitstream added on 2014-06-13T21:00:09Z : No. of bitstreams: 1 nascimento_rs_me_ilha.pdf: 622801 bytes, checksum: 733c24ed2e9dfd88a5d08bda687e622e (MD5)<br>O nitrogênio é o nutriente absorvido em maior quantidade pelo feijoeiro, sendo que o manejo da adubação nitrogenada pode interferir no desenvolvimento e na produtividade da cultura. Neste sentido, o trabalho foi desenvolvido na Fazenda Experimental da UNESP – Ilha Solteira localizada em Selvíria, Mato Grosso do Sul, com o objetivo d

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Laberge, MacDonald Tammy. "Molecular Aspects of Nitrogen Metabolism in Fishes." Scholarly Repository, 2009. http://scholarlyrepository.miami.edu/oa_dissertations/668.

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Molecular aspects of nitrogen metabolism in vertebrates is an interesting area of physiology and evolution to explore due to the different ways in which animals excrete nitrogenous waste as they transition from an aquatic to a terrestrial lifestyle. Two main products of nitrogen metabolism in fishes are ammonia and urea. Ammonia is produced during protein catabolism and build up of ammonia is toxic. Some aquatic vertebrates convert ammonia into a less toxic compound urea via de novo synthesis through the ornithine-urea cycle (O-UC). Five enzymes are involved in the O-UC: carbamoyl phosphat

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BISPO, Safira Valença. "Substituição total do milho e parcial do farelo de soja por palma forrageira e uréia para vacas em lactação." Universidade Federal Rural de Pernambuco, 2009. http://www.tede2.ufrpe.br:8080/tede2/handle/tede2/6913.

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Submitted by (edna.saturno@ufrpe.br) on 2017-05-18T12:16:23Z No. of bitstreams: 1 Safira Valenca Bispo.pdf: 542927 bytes, checksum: 2113bc55d518b5e00e59bacc2d66cd98 (MD5)<br>Made available in DSpace on 2017-05-18T12:16:23Z (GMT). No. of bitstreams: 1 Safira Valenca Bispo.pdf: 542927 bytes, checksum: 2113bc55d518b5e00e59bacc2d66cd98 (MD5) Previous issue date: 2009-08-17<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES<br>The experiment was carried out with the aim of assessing the effect of the total replacement of corn meal and partial replacement of soybean meal with

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Nascimento, Rildo Santana do. "Fontes e épocas de aplicação de nitrogênio em feijoeiro de inverno em sistema plantio direto /." Ilha Solteira : [s.n.], 2008. http://hdl.handle.net/11449/98912.

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Orientador: Orivaldo Arf<br>Banca: Salatiér Buzetti<br>Banca: Rogério Peres Soratto<br>Resumo: O nitrogênio é o nutriente absorvido em maior quantidade pelo feijoeiro, sendo que o manejo da adubação nitrogenada pode interferir no desenvolvimento e na produtividade da cultura. Neste sentido, o trabalho foi desenvolvido na Fazenda Experimental da UNESP - Ilha Solteira localizada em Selvíria, Mato Grosso do Sul, com o objetivo de estudar o efeito de fontes e épocas de aplicação do nitrogênio no desenvolvimento e produtividade do feijoeiro de inverno no sistema plantio direto utilizando irrigação

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24

Miranda, Mariana Santos de. "Efeitos da substituição parcial do farelo de soja por uma fonte de proteína microbiana derivada de levedura, em dietas de vacas holandesas em lactação." Universidade de São Paulo, 2015. http://www.teses.usp.br/teses/disponiveis/74/74131/tde-01022016-135600/.

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Foi conduzido um estudo com vacas leiteiras no Centro de Análise e Pesquisa Tecnológica do Agronegócio - Bovinos de Leite, do Instituto de Zootecnia, em Nova Odessa, SP, com o objetivo de avaliar os efeitos da substituição parcial do farelo de soja da dieta por uma fonte de proteína microbiana derivada de levedura (PML), e a sua combinação com uma ureia de liberação lenta (ULL), sobre o consumo de MS, produção e composição do leite, bem como alguns parâmetros sanguíneos e o balanço nitrogenado. Foram utilizadas oito vacas primíparas da raça Holandês, distribuídas aleatoriamente em dois quadrad

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25

Teixeira, César Roberto Viana. "Ureia e sal mineral em suplementos para vacas mestiças leiteiras." Universidade Federal de Viçosa, 2014. http://locus.ufv.br/handle/123456789/5814.

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Made available in DSpace on 2015-03-26T13:55:24Z (GMT). No. of bitstreams: 1 texto completo.pdf: 232985 bytes, checksum: b09e629ebb282c1f0995ce7236c4eca5 (MD5) Previous issue date: 2014-02-26<br>Fundação de Amparo a Pesquisa do Estado de Minas Gerais<br>This study aimed to evaluate the use of supplements with different proportions of urea and mineral salt, for dairy crossbred cows fed with sugarcane on intake and digestibility of dry matter (DMI and DMD respectively) and its constituents ,milk production and composition, feed efficiency , excretion of nitrogenous compounds and microbial prot

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26

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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27

Queiroz, Oscar Cezar Müller. "Associação de aditivos microbianos na ensilagem e o desempenho de vacas em lactação recebendo silagem de cana-de-açúcar comparada a volumosos tradicionais." Universidade de São Paulo, 2006. http://www.teses.usp.br/teses/disponiveis/11/11139/tde-05102006-142405/.

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O presente trabalho teve como objetivo avaliar o efeito de aditivos químicos, microbianos e a associação destes sobre a dinâmica fermentativa e a estabilidade aeróbia de silagens de cana-de-açúcar, além de avaliar o desempenho de vacas leiteiras de alto potencial produtivo recebendo rações com diferentes fontes de volumosos. No primeiro experimento silagens de cana-de-açúcar foram confeccionadas em silos laboratoriais de 20L, contendo válvula para escape de gases e coleta de efluente. O experimento seguiu o delineamento inteiramente ao acaso, em esquema fatorial sendo constituído por dois perí

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Mendes, Alcester. "Fornecimento de uréia na dieta de catetos (Pecari tajacu) e uso de isótopo estável 15N como marcador para estimativa da síntese de nitrogênio microbiano." Universidade de São Paulo, 2008. http://www.teses.usp.br/teses/disponiveis/64/64134/tde-10062009-113522/.

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A utilização racional da fauna silvestre é um processo benéfico, por resultar em vantagens econômicas e sociais, e ao mesmo tempo auxiliar no processo de conservação das espécies silvestres. Entre as espécies silvestres brasileiras com potencial zootécnico, destaca-se o cateto (Pecari tajacu), um animal que consome diversos tipos de alimentos e que produz carne e couro com elevada demanda nos mercados nacional e internacional, respectivamente. Uma característica desta espécie é a presença de um pré-estômago, onde ocorre fermentação microbiana que confere a esta espécie capacidade para digerir

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29

Jiménez, Aliaga Ronald. "Uso de desperdicios de tubérculos de papa y de rastrojos de maíz tratados con urea en la alimentación estratégica de ovinos." Bachelor's thesis, Universidad Nacional Mayor de San Marcos, 2007. https://hdl.handle.net/20.500.12672/1247.

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Los efectos del tamaño de partícula (TP) y tipo de amonificación-conservación (TAC) fueron evaluados sobre la digestibilidad y consumo de rastrojos de maíz, en ovinos. En un segundo experimento, la óptima combinación TP-TAC fue usada como dieta base para evaluar el efecto de niveles crecientes de suplementación con subproducto de papa sobre la ganancia de peso vivo, en ovinos. En el primer experimento se emplearon cuatro ovinos criollos en un arreglo factorial 4 x 4: TP (1, 2, 3 y 4 cm) x AC [no amonificado ni ensilado (SS) y tres tratamientos amonificados con variantes de conservación en silo

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Santiago, Alberto Magno Ferreira. "Uréia em dietas à base de cana-de-açúcar para vacas leiteiras." Universidade Federal de Viçosa, 2009. http://locus.ufv.br/handle/123456789/5810.

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Made available in DSpace on 2015-03-26T13:55:23Z (GMT). No. of bitstreams: 1 texto completo.pdf: 458453 bytes, checksum: 52841bfa7a70fd9ab10f120499d2f3c2 (MD5) Previous issue date: 2009-01-05<br>Conselho Nacional de Desenvolvimento Científico e Tecnológico<br>We evaluated the effect of four levels of mixing urea:ammonium sulfate (9:1) (Urea) on sugarcane (0, 0.4, 0.8 and 1.2%, fed basis) on consumption, on the intake and diet digestibility, production performance, metabolism of nitrogenous compounds and economy of diets in dairy cows producing less than 15 kg/day. We used 12 Holstein cows di

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Hipfner, J. Mark. "Egg production in the thick-billed murre (Uria lomvia) and razorbill (Alca torda) : a life-history perspective /." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape2/PQDD_0015/NQ55126.pdf.

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Almeida, Ana Ruth Estrela. "Coproduto de fecularia de mandioca e ureia protegida na alimentação de vacas em lactação." Universidade Estadual do Oeste do Paraná, 2016. http://tede.unioeste.br:8080/tede/handle/tede/1594.

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Bentes, Jones Gomes. "Influência do espaçamento na produtividade de sementes de malva (Urena lobata L.) em terra firme no Amazonas." Universidade Federal do Amazonas, 2015. http://tede.ufam.edu.br/handle/tede/4671.

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Maciel, Alexandre Chaves. "Tendências do cultivo da malva (Urena Lobata L.) por agricultores familiares em Manacapuru-AM." Universidade Federal do Amazonas, 2015. http://tede.ufam.edu.br/handle/tede/4081.

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Rivera, Solé María Belén. "Efecto del nivel de suplementación energética sobre la respuesta metabólica y productiva, en vacas consumiendo praderas con alto contenido protéico." Tesis, Universidad de Chile, 2013. http://repositorio.uchile.cl/handle/2250/148402.

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Tesis para optar al Título Profesional de Ingeniero Agrónomo y al Grado de Magister en Ciencias Agropecuarias, Mención Producción Animal<br>Se realizó un ensayo en la Estación Experimental Oromo dependiente del Departamento de Producción Animal de la Facultad de Ciencias Agronómicas, Universidad de Chile. El objetivo de esta investigación fue evaluar el efecto de la suplementación energética sobre la respuesta metabólica y productiva, en vacas consumiendo praderas de un alto contenido proteico. El estudio fue realizado durante los meses de Noviembre y Diciembre del año 2011 y tuvo una duració

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Rech, Ioná. "Produção e avaliação da eficiência de ureia enriquecida com aditivos para o controle da liberação do nitrogênio." Universidade de São Paulo, 2014. http://www.teses.usp.br/teses/disponiveis/11/11140/tde-19032014-111122/.

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Devido à importância do aumento da eficiência agronômica dos fertilizantes nitrogenados em função do custo cada vez maior dos fertilizantes na produção agrícola, o objetivo do presente estudo foi desenvolver formulações de fertilizantes nitrogenados a base de ureia com a adição de compostos inibidores de urease (NBPT, Cu, B), enxofre elementar e um argilomineral do grupo das zeolitas compondo os grânulos internamente, a fim de minimizar as perdas de N por volatilização de amônia e por lixiviação de amônio e nitrato. O primeiro experimento foi conduzido em casa de vegetação entre janeiro e març

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Padovani, Kathya Regina Fioravanti. "Ureia de liberação controlada, cinética e os produtos da fermentação in vitro de Brachiaria brizantha cv. Marandu em duas idades de rebrotação." Universidade de São Paulo, 2014. http://www.teses.usp.br/teses/disponiveis/74/74131/tde-25092014-145017/.

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Foi realizado no Laboratório de Ciências Agrárias da Faculdade de Zootecnia e Engenharia de Alimentos, um bioensaio de fermentação in vitro para avaliar a inclusão de doses crescentes de ureia de liberação controlada (ULC) em lâminas foliares de Brachiaria brizantha cv. Marandu em duas idades de rebrotação. Amostras colhidas em duas idades de rebrotação (28 e 65 dias, S28 e S65, respectivamente) foram incubadas em frascos com doses crescentes de ureia de liberação controlada (ULC - D0, D5, D10 e D20), em três inóculos distintos. O delineamento experimental foi em blocos casualizados fatorial 2

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Brouard, Christine. "Contribution à l'étude de la rétention de phénylurées (herbicides) par des adsorbants modèles et des sols." Angers, 1995. http://www.theses.fr/1995ANGE0006.

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Notre objectif était d'étudier la rétention d'herbicides de la famille des phenylurées sur des adsorbants minéraux et dans le sol. Les molécules retenues sont le chloroxuron, le chlortoluron, le metobromuron, l'isoproturon et le difenoxuron. Les adsorbants utilises sont la celite, le florisil, l'alumine, le carbonate et le sulfate de calcium. Les sols étudiés sont un sol limoneux-argileux et un sol limoneux-sableux. Nous poursuivons le double but analytique et environnemental d'améliorer les étapes de purification par chromatographie d'adsorption d'extraits en vue de l'analyse de résidus, et d

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Sangwan, Jagbinder Singh. "Obtention in vitro de cellules puis de plantes résistantes a certains herbicides chez le datura innoxia mill. Et le nicotania tabacum l." Paris 7, 1988. http://www.theses.fr/1988PA077149.

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La mise au point d'un système pour la sélection in vitro de deux solanacées diploïdes et autogames résistantes a l'atrazine, au chlortoluron et au terbutryne, est décrite. Les effets de ces produits ont été détermines sur des cultures d'organes (explants différencies) et sur des cals (tissus indifférencies). Aucune sélection n'est possible a partir de disques foliaires, entre-nœuds, anthères et cals non chlorophylliens. On procede ensuite au repiquage des tissus sur un milieu organogène. On réalise le micro greffage des apex des tiges ainsi formées sur de jeunes plantes issues de germination.

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Troton, Didier. "Modifications de la composition lipidique des thylakoides intervenant au cours de l'adaptation d'euglena gracilis au diuron." Paris 7, 1987. http://www.theses.fr/1987PA077169.

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Ke-WeiLin and 林克衛. "Investigation on Hydrogen-rich Syngas Production of Reforming Biofuel Blended with Aqueous Urea Solution." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/w36435.

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博士<br>國立成功大學<br>系統及船舶機電工程學系<br>107<br>Biofuel and urea are all environment-friendly hydrogen carriers; they can product hydrogen-rich syngas by reforming methods for fuel cell to generate the power or for other applications. There is little literature to discuss the hydrogen-rich syngas production of biofuel blended with aqueous urea solution (AUS) by reforming. In this study, different biofuels reforming including biodiesel, bioethanol, biobutanol, and HVO blend with AUS are investigated by a thermodynamic analysis and experiment. There are four parts in this study; the first part is to discu

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Chi, Chih-Wei, and 紀智偉. "Effect of Urea Concentration on Production of L-Lactic Acid and Chitosan by Culture of Rhizopus oryzae." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/98178033584501145463.

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碩士<br>大同大學<br>生物工程學系(所)<br>94<br>During L-lactic acid fermentation by culture of Rhizopus oryzae ATCC 9363, the production of biomass and chitosan was affected by the urea concentration. When fermentation was carried out in a 5-L stirred fermenter by adding calcium hydroxide to control the pH at 6.0, biomass increased from 4.35 g/L to 7.25 g/L as urea from 2.5 to 10.0 g/L was used as N-source; meanwhile, the produced chitosan increased from 0.290 g to 0.841 g. The highest yield of L-lactic acid was 101.3 g/L as 5.0 g/L of urea was used. Upon 5.0 g/L of urea as N-source and 120 g/L of glucose a

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Lin, Zi-Yuan, and 林子元. "Application of Urea and Plant Growth Regulators on Production of ‘Yu Her Pau’ Litchi (Litchi chinensis Sonn.)." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/3hkybv.

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碩士<br>國立屏東科技大學<br>農園生產系所<br>105<br>The objective of this study was to investigate the effect of utilizing Urea and Ethephon on the stage of shoot development and flowering management to inhibit the growth of vegetative shoot and flower-thinning of ‘Yu Her Pau’ Litchi, which evaluating the feasibility of Urea and treated different plant growth regulators after the fruit setting stage to prevent fruir dropping. The result indicate there was a significant effect on spraying the Ethephon and 20% Urea for shoot thinning of ‘Yu Her Pau’ Litchi. In 2015 and 2016, the shoot thinning rate of 395 ppm E

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BARZAGLI, FRANCESCO. "Innovative methods with low energy consumption for efficient CO2 capture and its re-use as a building block for the synthesis of useful chemicals." Doctoral thesis, 2016. http://hdl.handle.net/2158/1044295.

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The purpose of this research activity has been the development of new and efficient systems for the capture of CO2 from a gas stream in a sustainable way from an energetic, economic and environmental point of view. The chemical absorption by aqueous alkanolamines is considered the most efficient and mature technique for the CO2 capture and separation. Alkanolamines are widely used due to the fast reaction with CO2 and to their solubility in water. In particular aqueous 2-amine ethanol (MEA) has a long story as efficient systems for CO2 separation in ammonia and hydrogen plants, natural gas

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Yeshitela, Teferi Belayneh. "Effect of cultural practices and selected chemicals on flowering and fruit production in some mango (Mangifera indica L.) cultivars." Thesis, 2005. http://hdl.handle.net/2263/23181.

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Although mango (Mangifera indica L.) has been studied for many years, numerous problems still elude researchers. The objectives of the current trials were to study the effects of some cultural practices (fruit thinning, panicle/ bud/ renewal/ post-harvest pruning) and chemicals (Corasil.E, potassium nitrate/urea, paclobutrazol) on various vegetative, floral, yield and quality parameters. The study meant to address problems of both South African and Ethiopian mango growers. The thinning (on ‘Sensation’) and pruning (on ‘Tommy Atkins’ and ‘Keitt’) experiments were conducted for two seasons (2001

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"Optimizing the efficiency of nutrient utilization in dairy cows." Thesis, 2013. http://hdl.handle.net/10388/ETD-2013-03-973.

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A series of experiments were conducted to determine nutritional strategies to improve the efficiency of N utilization in dairy cows when feeding co-products including wheat-based (W-DDGS) and corn-wheat blend distillers grains with solubles (B-DDGS), and dried whey permeate (DWP). In Experiment 1, the objective was to determine the effects of replacing canola meal (CM) as the major protein source with W-DDGS on ruminal fermentation, microbial protein production, omasal nutrient flow, and animal performance. Cows were fed either a standard barley silage-based total mixed ration containing CM as

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Cherdchim, Banyat. "Actions of lignocellulolytic enzymes on Abies grandis(grand fir) wood for application in biofuel production." Doctoral thesis, 2010. http://hdl.handle.net/11858/00-1735-0000-0006-B138-4.

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