Log in

Relevant bibliographies by topics / In vitro gas production technique / Dissertations / Theses

To see the other types of publications on this topic, follow the link: In vitro gas production technique.

Dissertations / Theses on the topic 'In vitro gas production technique'

Author: Grafiati

Published: 4 June 2021

Last updated: 3 February 2022

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 40 dissertations / theses for your research on the topic 'In vitro gas production technique.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse dissertations / theses on a wide variety of disciplines and organise your bibliography correctly.

1

Palmer, Matthew. "Development of the in vitro gas production technique to estimate protein degradation in the rumen." Thesis, University of Edinburgh, 2006. http://hdl.handle.net/1842/1950.

Full text

Abstract:

The purpose of this thesis was to adapt the in vitro gas production technique (IVGPT) to estimate the rumen degradation profile of feed protein and to investigate the effect of sample preparation on the estimated kinetics of silage carbohydrate and protein degradation in the rumen.

APA, Harvard, Vancouver, ISO, and other styles

2

Nagadi, Sameer A. "Development of the in vitro gas production technique to assess degradability of forages by ruminants." Thesis, University of Edinburgh, 2000. http://hdl.handle.net/1842/15477.

Full text

Abstract:

The influence of microbial activity on the pattern of gas production and the possibility of developing a protocol for standardising the microbial activity of ruminal fluid were investigated (chapter 2). Firstly, ruminal fluid was diluted 1:2, 1:5, 1:9 and 1:20 (v/v) with buffer solution and the <i>in vitro</i> gas production from cellulose, glucose, hay and ryegrass studied. Gas production at 4, 24 and 120h were significantly decreased as the ratio of buffer solution to ruminal fluid increased. For each substrate, incubation with ruminal fluid diluted 1:2 (v/v) gave a higher (P<<i>0.5</i>) asy

APA, Harvard, Vancouver, ISO, and other styles

3

Sileshi, Zinash. "Development of a simple in vitro gas production technique, using a pressure transducer, to estimate digestion of some Ethiopian forages." Thesis, University of Reading, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.241462.

Full text

APA, Harvard, Vancouver, ISO, and other styles

4

Mauricio, Rogerio Martins. "Comparison of bovine rumen liquor and bovine faeces as sources of microorganisms for an in vitro gas production technique for evaluating forages." Thesis, University of Reading, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.299306.

Full text

APA, Harvard, Vancouver, ISO, and other styles

5

Fagundes, Roberto Pereira. "Efeito do silicato na produção e qualidade de Brachiaria decumbens cultivada em solo degradado do Triângulo Mineiro." Universidade Federal de Uberlândia, 2005. https://repositorio.ufu.br/handle/123456789/13002.

Full text

Abstract:

Mestre em Ciências Veterinárias<br>Os efeitos benéficos da adubação com silício (Si) têm sido observados em várias espécies vegetais, especialmente quando estas são submetidas a estresse, seja ele biótico ou abiótico. Aumentos de produtividade e resistência a pragas e doenças estão entre os principais benefícios do Si para as plantas que o absorvem e o acumulam na parte aérea, uma das possíveis razões para maior adaptabilidade e resistência do capim braquiária nas áreas de acidez e baixa fertilidade do solo das regiões do cerrado brasileiro. Objetivou-se avaliar o efeito da adubação superficia

APA, Harvard, Vancouver, ISO, and other styles

6

Nathanaelsson, Lena, and Linda Sandström. "Statistical evaluation of in vitro gas production kinetics." Thesis, Umeå universitet, Institutionen för matematik och matematisk statistik, 2003. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-51348.

Full text

Abstract:

At the Forage Research Centre, Swedish University of Agricultural Sciences in Umeå a technique has been developed to describe the degradation of feeds in ruminant animals. The development of this technique has been made in collaboration with Dr J.W. Cone, Nutrition and Food, Animal Sciences Group of Wageningen UR, Lelystad, the Netherlands. Experiments have been performed in laboratories where feed samples have been incubated with rumen fluid and the amount of gas produced during the digestion has been measured continuously. These feed samples were analysed at three separate occasions. The pu

APA, Harvard, Vancouver, ISO, and other styles

7

Lowman, Rebecca Susan. "Investigations into the factors which influence measurements during in vitro gas production studies." Thesis, University of Edinburgh, 1998. http://hdl.handle.net/1842/30405.

Full text

Abstract:

The aim of this thesis was to investigate the suitability and application of an <I>in vitro </I>gas production technique as a routine analytical tool in animal nutrition studies. Firstly, the effect of several biological, chemical and physical factors on the measurement of gas production were investigated. These factors included incubation temperature, head-space pressure, shaking movement of the <I>in vitro</I> cultures, the nature of the feedstuff (chemical composition, particle size and drying process), the source of the microbial inoculum and the apparatus used to measure gas production. S

APA, Harvard, Vancouver, ISO, and other styles

8

Harris, David Malcolm. "The effect of pre-exposing the microbial population on gas production using the Pressure Transducer Technique." Thesis, University of Reading, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.242337.

Full text

APA, Harvard, Vancouver, ISO, and other styles

9

Baza, García Luis Angel. "In Vitro Assessment of Fecal Inocula From Horses Fed on High-Fiber Diets With Fibrolytic Enzymes Addition on Gas, Methane and Carbon Dioxide Productions As Indicators of Hindgut Activity." Tesis de Licenciatura, Universidad Autónoma del Estado de México, 2016. http://hdl.handle.net/20.500.11799/65147.

Full text

Abstract:

This study was aimed to assess the effect of fecal inocula from horses fed on concentrate (restricted amount daily) and oat straw (ad libitum) supplemented with fibrolytic enzymes on in vitro hindgut activity. Cellulase (CE), xylanase (XY) and CE+XY (1:1 v/v; CX) were tested at three levels (μL/g DM): 0, 1 and 3, in addition to control without enzyme addition (EP0). Fecal inocula were collected from 16 Quarter Horse mares supplemented with enzyme at 0 (FCOwithout enzyme), or fed 10 ml enzyme/mare/day of CE (FCE), XY (FXY) or CE+XY (1:1 v/v; FCX) for 15 days. The fecal content mixed with

APA, Harvard, Vancouver, ISO, and other styles

10

Ballinas, Archundia Susana. "Effect of Saccharomyces cerevisiae on In Vitro Fecal Digestion of Four Feed Ingredients Commonly Used to Feed Horses in Mexico." Tesis de Licenciatura, Universidad Autónoma del Estado de México, 2016. http://hdl.handle.net/20.500.11799/65150.

Full text

Abstract:

ABSTRACT: The study aimed to assess the nutritive value in vitro of 4 feeds (grains and forages) commonly used in horses nutrition in Mexico, in the absence or presence of Saccharomyces cerevisiae at 4 mg/g DM. Fecal inoculum was obtained from 4 adult English Thoroughbred horses fed on restricted amount of concentrate and oat hay ad libitum. The incubated substrates included were corn gluten meal, soybean meal, oat grain and alfalfa hay. Gas production was recorded at 2, 4, 6, 8, 10, 12, 14, 24, 48 and 70 h using the Pressure Transducer Technique. Some ingredient × yeast interactions were

APA, Harvard, Vancouver, ISO, and other styles

11

Kundu, Arunabha. "Tree phase reactors : A, Hydrodynamics and partial wetting of trickle beds : B, absorption enhancement in gas-liquid-liquid bublle column." Toulouse, INPT, 2004. http://www.theses.fr/2004INPT003G.

Full text

Abstract:

Two investigations on three phase reactors are reported : liquid flow maldistribution and partial wetting of the catalyst in trickle bed reactors, and effects of adding small amounts of organic phase on gas to aqueous phase mass transfer in a bubble column. Radial distribution of the liquid flow is investigated in a 0. 152 m in diameter fixed bed of 5 successive catalysts of various shape and size, and various trickling liquids (water, water+additives, kerosene). A model has been derived based on force balance on each fluid phase and compared to experimental results including previous works. T

APA, Harvard, Vancouver, ISO, and other styles

12

Garcia, Cortes Daniel Ajax. "Contribution à l'étude de l'hydrodynamique et du transfert de masse en réacteurs de type cuve agitée par une approche globale et locale en système gas-liquide." Toulouse, INPT, 2003. http://www.theses.fr/2003INPT030G.

Full text

Abstract:

L'hydrodynamique dans un bioréacteur à turbine à quate pales par Vélocimètre Laser à effet Dopler (LDV) a tout d'abord été étudiée en systèmes monophasique et biphasique ; les paramètres adimensionnels caractéristiques et obtenus ont été comparés à ceux de cuve standard. Ensuite nous avons caractérisé par LDV l'hydrodynamique dans un bioréacteur à fond hémisphérique équipé de deux turbines à six pales plates soit de dimensions égales, soit de dimensions différentes en systèmes monophasique et biphasique. Le système à deux turbines de dimensions différentes permet de diminuer la puissance conso

APA, Harvard, Vancouver, ISO, and other styles

13

Dufek, Nickolas Alois. "An Assessment of Integrated Weed Management Strategies for Purple Threeawn-Dominated Rangelands." Thesis, North Dakota State University, 2013. https://hdl.handle.net/10365/26635.

Full text

Abstract:

Purple threeawn (Aristida purpurea Nutt.) is a native bunch grass that is avoided by grazers. It is capable of dominating old cropland and overgrazed pastures, limiting livestock carrying capacity, and degrading wildlife habitat. Traditional management tools have had little impact on threeawn dominance in semiarid regions of the west. Our objectives were to: 1) assess fire and nitrogen treatment effects on threeawn forage quality at various phenological stages to test their potential as pretreatments in a grazing strategy and 2) examine a threeawn-dominated plant community?s response to prescr

APA, Harvard, Vancouver, ISO, and other styles

14

Longo, Cibele. "Avaliação in vitro de leguminosas taniníferas tropicais para mitigação de metano entérico." Universidade de São Paulo, 2007. http://www.teses.usp.br/teses/disponiveis/64/64132/tde-03092007-144241/.

Full text

Abstract:

Os animais contribuem para o aumento da concentração de metano na atmosfera através da fermentação de tanques de esterco e da fermentação do trato digestivo (fermentação entérica). A fermentação entérica dos ruminantes, pseudo-ruminantes (cavalos, asno, mulas) e não ruminantes produzem em média 80 Tg/ano de metano e representam 28 % do metano antropogênico global emitido, dos quais 95 % provêm dos ruminantes. Os objetivos destes trabalhos foram (i) rastrear novos materiais com potencial forrageiro que contenham tanino e que promovam redução de metano entérico; (ii) estudar a influência dessas

APA, Harvard, Vancouver, ISO, and other styles

15

Pinedo, Lerner Arévalo. "Teores de taninos e produção de gases in vitro da silagem de sorgo com adição de níveis crescentes de guandu." Universidade de São Paulo, 2009. http://www.teses.usp.br/teses/disponiveis/64/64134/tde-27042010-084215/.

Full text

Abstract:

Na alimentação animal, o sorgo pode ser explorado de diversas formas. Além dos grãos, a planta pode ser oferecida na forma de silagem, rolão, verde ou ainda pastejada; embora o valor nutritivo pode sofrer algumas variações pela presença ou ausência de compostos fenólicos como os taninos condensados. O objetivo deste trabalho foi avaliar a composição química-bromatológica, qualidade fermentativa e produção de gases in vitro nas silagens de sorgo granífero adicionados com diferentes níveis de guandu. O estudo foi dividido em dois experimentos. O primeiro estudo (Capítulo 3) avaliou os efeitos da

APA, Harvard, Vancouver, ISO, and other styles

16

Simões, Nancy Rodrigues. "Uso de inóculo de fezes como substituição do conteúdo ruminal de bubalinos na técnica in vitro de produção de gases." Universidade de São Paulo, 2012. http://www.teses.usp.br/teses/disponiveis/74/74131/tde-09052012-112310/.

Full text

Abstract:

Com o objetivo de estudar o uso de inóculo de fezes em substituição do conteúdo ruminal de bubalinos na técnica in vitro de produção de gases, este presente trabalho comparou as avaliações realizadas em três ensaios. Foram utilizados três bubalinos da raça Mediterrâneo, machos, adultos, castrados, fistulados no rúmen com média de peso vivo de 450 (± 18,7) kg. Estes animais receberam uma dieta basal, composta de silagem de milho (70%) e concentrado (30%). Estes animais foram os doadores dos 2 tipos de inóculos, que foram conteúdo ruminal (CR) e fezes. O primeiro ensaio realizado foi com aliment

APA, Harvard, Vancouver, ISO, and other styles

17

Melo, Flávia Alves. "Pré-incubação de fezes para utilização como fonte alternativa de inóculo microbiano para bioensaios in vitro." Universidade de São Paulo, 2018. http://www.teses.usp.br/teses/disponiveis/74/74131/tde-20112018-095621/.

Full text

Abstract:

As técnicas in vitro de produção de gases são usualmente empregadas em pesquisas na nutrição de ruminantes com a finalidade de simular a fermentação ruminal, possuindo diversas vantagens como facilidade de adoção, repetibilidade, uso minimizado de animais e baixo custo. Para tanto, é necessário a coleta de conteúdo ruminal, a qual geralmente é obtida com o uso de animais fistulados no rúmen, no entanto este tipo de cirurgia esta cada vez mais contestada. Frente a esse duelo, há um crescente interesse científico por pesquisas que forneçam alternativas ao inóculo ruminal. Sendo assim, o objetivo

APA, Harvard, Vancouver, ISO, and other styles

18

Alves, Teresa Cristina. "Desenvolvimento ponderal, características da carcaça e eficiência da nutrição energética e protéica no metabolismo ruminal de búfalos e produção de gases in vitro." Universidade de São Paulo, 2010. http://www.teses.usp.br/teses/disponiveis/74/74131/tde-04102010-162648/.

Full text

Abstract:

Com o objetivo de estudar a espécie bubalina quanto ao desempenho de machos bubalinos do nascimento ao abate em regime de pastejo e as características de carcaça em dois pesos de abate, assim como o metabolismo ruminal de dietas com diferentes níveis de proteína e energia e a produção de gases in vitro, o presente trabalho apresenta-se avaliações feitas em quatro partes. A parte 1 foi realizada com búfalos em crescimento criados à pasto, do nascimento até atingirem dois pesos distintos de abate (517 e 568 kg). Avaliações do desempenho foram realizadas com medição do peso vivo, perímetro toráci

APA, Harvard, Vancouver, ISO, and other styles

19

Serment, Amélie. "Dynamique et intensité de biotransformation dans le rumen." Phd thesis, AgroParisTech, 2012. http://pastel.archives-ouvertes.fr/pastel-00802657.

Full text

Abstract:

La " biotransformation ruminale " est un concept qui regroupe l'ensemble des réactions se produisant dans le rumen (dégradation, synthèse et conversion). Ces réactions sont pilotées par trois forces motrices majeures : les lois de la cinétique chimique, de la thermodynamique et de la dynamique des populations microbiennes. Cette thèse a pour objectif d'étudier l'impact d'un facteur alimentaire (pourcentage de concentrés incorporés dans la ration, supplémentation en huile) sur le fonctionnement du rumen et la biotransformation ruminale des constituants alimentaires en termes de dynamique et d'i

APA, Harvard, Vancouver, ISO, and other styles

20

Lima, Larissa de Assis. "Valor nutritivo da silagem de sorgo com níveis de resíduo da colheita da soja." Universidade Federal de Goiás, 2014. http://repositorio.bc.ufg.br/tede/handle/tede/4389.

Full text

Abstract:

Submitted by Luciana Ferreira (lucgeral@gmail.com) on 2015-03-30T14:23:12Z No. of bitstreams: 2 Dissertação - Larissa de Assis Lima - 2014.pdf: 502115 bytes, checksum: f3ad66893218685583a1492d7dd88c23 (MD5) license_rdf: 23148 bytes, checksum: 9da0b6dfac957114c6a7714714b86306 (MD5)<br>Approved for entry into archive by Luciana Ferreira (lucgeral@gmail.com) on 2015-03-30T15:32:56Z (GMT) No. of bitstreams: 2 Dissertação - Larissa de Assis Lima - 2014.pdf: 502115 bytes, checksum: f3ad66893218685583a1492d7dd88c23 (MD5) license_rdf: 23148 bytes, checksum: 9da0b6dfac957114c6a7714714b86306 (MD5)<br>Ma

APA, Harvard, Vancouver, ISO, and other styles

21

Silveira, Alisson Minozzo da. "Efeito de ácidos orgânicos ou monensina sódica sobre a fermentação ruminal." Universidade Federal de Santa Maria, 2013. http://repositorio.ufsm.br/handle/1/10813.

Full text

Abstract:

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior<br>Food additives are substances that control animal metabolism, increasing the efficiency of feed utilization and providing greater animal production. Monensin is certainly the most studied and used, but in recent years its use has undergone several constraints, mainly by the European Union and the United States, so it is crucial to study new alternatives which present satisfactory results additives on animal performance. Thus, an experiment was conducted evaluating, by the in vitro gas technique, the use of a product based on organi

APA, Harvard, Vancouver, ISO, and other styles

22

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/.

Full text

Abstract:

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

APA, Harvard, Vancouver, ISO, and other styles

23

Anghilante, Régis. "Flexibilisation and integration of solid oxide electrolysis units in power to synthetic natural gas plants." Thesis, Toulouse, INPT, 2020. http://www.theses.fr/2020INPT0094.

Full text

Abstract:

La technologie d’électrolyse à oxydes solides (SOE) pourrait permettre d’améliorer l’efficacité des installations de conversion d’électricité en gaz naturel de synthèse (SNG) et de réduire leur coût, grâce à une integration thermique performante, à l’industrialisation de la technologie et une flexibilisation des unités pour la pénétration de l’électricité renouvelable. Une analyse énergétique détaillée de trois concepts d’installations power-to-SNG innovants est d’abord réalisée avec une intégration thermique détailllée. Les installations intégrant des unités SOE et produisant du GNC ou du GNL

APA, Harvard, Vancouver, ISO, and other styles

24

Lucas, Ronaldo Carlos. "Características nutricionais e fatores antinutricionais na fermentação ruminal in vitro de espécies arbóreo-arbustivas nativas e exóticas em área de Caatinga no Sertão de Pernambuco." Universidade de São Paulo, 2012. http://www.teses.usp.br/teses/disponiveis/64/64134/tde-26092012-111917/.

Full text

Abstract:

A vegetação nativa do sertão nordestino é rica em espécies forrageiras nos estratos herbáceo, arbustivo e arbóreo. Estudos têm revelado que acima de 70% das espécies botânicas da caatinga participam significativamente da composição da dieta dos ruminantes domésticos. Estrategicamente, as espécies lenhosas são fundamentais no contexto de produção e disponibilidade de forragem no semiárido Nordestino. Objetivou-se com este trabalho: (1) Quantificar a composição química bromatológica e os compostos fenólicos de leguminosas nativas; (2) Avaliar as características de degradação ruminal e o efeito b

APA, Harvard, Vancouver, ISO, and other styles

25

Vitola, Pasetto Leticia. "Étude et développement d'un procédé de traitement des odeurs par oxydation à l'ozone : application aux effluents gazeux d'usines de production de superphosphate." Thesis, Toulouse, INPT, 2019. http://www.theses.fr/2019INPT0061.

Full text

Abstract:

Dans le procédé de production d’engrais à base de superphosphate, l’attaque de la roche phosphatée par l’acide sulfurique génère des sous-produits gazeux odorants. Bien que leurs émissions se situent dans les limites réglementaires, les usines d’engrais à base de superphosphate sont susceptibles de causer des nuisances olfactives pour les riverains. Cette thèse propose d’étudier la faisabilité d’un procédé de traitement des odeurs par l’ozonation en phase gazeuse homogène. Une première étape de priorisation des composés chimiques ayant le potentiel odorant le plus important a été réalisée. Ce

APA, Harvard, Vancouver, ISO, and other styles

26

Declerck-Leblanc, Véronique. "Micropropagation du rhododendron à l'échelle industrielle : aspects qualitatifs et quantitatifs." Rouen, 1988. http://www.theses.fr/1988ROUES028.

Full text

Abstract:

Aspects scientifiques de la production in vitro en relation avec l'activité "recherche-développement" d'un laboratoire industriel (LBV France). Mise au point d'une technique pour 30 variétés. Détermination d'un milieu de culture optimal pour chacune des phases de développement. Recherche de marqueurs précoces de la conformité et de l'identité variétale. Utilisation de l'électrophorèse, application à 14 systèmes enzymatiques. Proposition d'essai de modélisation appliqués à la planification et à la gestion de la production. Simulation de la généralisation de la cinétique de production sur 200 va

APA, Harvard, Vancouver, ISO, and other styles

27

YU, LONG XI. "Arns poly(a**(+)) cytoplasmiques specifiques de l'organogenese reproductrice a caractere sterile chez mercurialis annua l. (2n=16) : traduction in vitro-electrophorese bidimensionnelles, hybridations homologues et heterologues." Orléans, 1987. http://www.theses.fr/1987ORLE2050.

Full text

APA, Harvard, Vancouver, ISO, and other styles

28

Shalygin, Maxim. "Réalisation et caractérisation du transport sélectif gazeux de contacteurs gaz-liquide à membrane (Selective transport of gases in gas-liquid membrane system)." Thesis, Vandoeuvre-les-Nancy, INPL, 2007. http://www.theses.fr/2007INPL022N/document.

Full text

Abstract:

Ce travail rapporte l’étude de systèmes membranaires à valves sélectives (SMV), qui combinent les avantages des techniques de séparation par membrane et par absorption. La 1ère partie du mémoire présente l'étude du transport de matière en régime permanent et transitoire dans les SMV élaborés à partir de membranes polymères denses et de solution aqueuses. Dans la 2ème partie le développement d'un modèle mathématique original pour la simulation des SMV est proposé ainsi que son évaluation expérimentale pour les séparations CO2/CH4/H2, avec des solutions aqueuses confinées de K2CO3. Des améliorat

APA, Harvard, Vancouver, ISO, and other styles

29

Bozorg, Marjan. "Optimization of membrane process architecture." Electronic Thesis or Diss., Université de Lorraine, 2019. http://www.theses.fr/2019LORR0252.

Full text

Abstract:

Les procédés de séparation membranaire sont une technologie bien connue et déjà largement utilisée dans le domaine de la purification des gaz. Ces procédés sont applicables à de nombreux secteurs d’activités industriels. Selon les performances de séparation recherchées, elles peuvent constituer une alternative intéressante aux technologies existantes de traitement des gaz (adsorption, cryogénie, contacteurs gaz/liquide). Pour exploiter au mieux cette technologie, le développement d'outils d’aide à la décision permettant d’identifier les procédés et les conditions opératoires économiquement ava

APA, Harvard, Vancouver, ISO, and other styles

30

Sales, Silva Luiz Paulo. "Procédé de séparation par formation sélective d'hydrates de gaz pour la valorisation du biogaz." Thesis, Université Paris-Saclay (ComUE), 2016. http://www.theses.fr/2016SACLY021/document.

Full text

Abstract:

Le biogaz, constitué essentiellement de méthane et de dioxyde de carbone, représente une voie alternative aux sources d’énergies fossiles. Pour être valorisé le mélange doit être séparé dans un procédé de séparation de gaz. Ces dernières années, un nouveau procédé basé sur la formation d'hydrates de gaz (GSHF) a suscité une attention particulière dans la communauté scientifique. Basé sur une transition de phase hydrate – liquide – vapeur conduite en présence de promoteurs thermodynamiques, la purification est supposée demander moins d’énergie et moins de réactifs dangereux pour l’environnement

APA, Harvard, Vancouver, ISO, and other styles

31

Theodoridou, Katerina. "Les effets des tannins condensés du sainfoin (Onobrychis viciifolia) sur sa digestion et sa valeur nutritive." Phd thesis, Université Blaise Pascal - Clermont-Ferrand II, 2010. http://tel.archives-ouvertes.fr/tel-00669557.

Full text

APA, Harvard, Vancouver, ISO, and other styles

32

Broman, Nils. "Värdeskapande av koldioxid frånbiogasproduktion : En kartläggning över lämpliga CCU-tekniker för implementeringpå biogasanläggningar i Sverige." Thesis, Linköpings universitet, Industriell miljöteknik, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-171793.

Full text

Abstract:

Carbon dioxide from biogas production is currently considered to be without value and isbecause of this released into the atmosphere in the biogas upgrading process. The residualgas is a potential carbon source and can create value in the biogas manufacturing process.By finding a suitable value-creating process that utilizes carbon dioxide, it can be possibleto provide both economic and environmental incentives for companies to develop theiroperations. This project explored the possibility to create value from this CO2. Through anevaluation of the technical maturity of CCU technologies, a reco

APA, Harvard, Vancouver, ISO, and other styles

33

Chen, Chung-Nan, and 陳中南. "Study of the kinetic characteristics of enteric methane production in dairy cattle and pigs by in vitro gas production technique." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/62j5n7.

Full text

Abstract:

博士<br>國立中興大學<br>動物科學系所<br>106<br>Methane is one of the main greenhouse gases. The livestock sector contributes approximately 20% of global methane emissions. Both ruminant animals (cattle and sheep) and non-ruminants (swine and horses) produce methane as a byproduct of enteric fermentation, which is considered as energy loss to the host animals. The enteric methane production varies with several factors. To identify effective mitigation strategies, a rapid, accurate and repeatable in vitro technique is required. Therefore, the main objective of this thesis was to establish an in vitro techniqu

APA, Harvard, Vancouver, ISO, and other styles

34

Aguiar, Andre D. "Predicting Forage Nutritive Value Using an In Vitro Gas Production Technique and Dry Matter Intake of Grazing Animals Using n-Alkanes." Thesis, 2010. http://hdl.handle.net/1969.1/ETD-TAMU-2010-05-7773.

Full text

Abstract:

In the first experiment, forage samples (n = 39) were collected during 4 years (2006 ? 2009) from pastures grazed by Santa Gertrudis cattle at the King Ranch, TX. The in vitro gas production technique (IVGP) was performed to understand the pattern of fermentation parameters of the forage and obtain fractional digestion rate (kd) values to predict total digestible nutrients (TDN). The best nonlinear model to describe the IVGP values of the forages was the two-pool logistic equation. The passage rate (kp) of 4%/h was used.. The kp predicted by the Large Nutrient Ruminant System (LNRS) model was

APA, Harvard, Vancouver, ISO, and other styles

35

Lin, Yu-Huei, and 林育徽. "Study on the forage degradation dynamic through in vitro gas production method." Thesis, 2002. http://ndltd.ncl.edu.tw/handle/12284552414238016481.

Full text

Abstract:

碩士<br>國立中興大學<br>畜產學系<br>90<br>In vitro digestion is a simple method which uses end point digestion measurement without evaluate dynamic changes during fermentation. In vitro gas production method however measured the gas production and changes of nutrient at different time points during incubation to predict dynamic changes in ruminal degradation. The aim of there studys was to predict forage degradation via method of in vitro gas production and of in situ nylon bag. Forage used in this trial including bermuda, timothy hay and local produced napier and pangola grass harvested at 4, 6, and 8-we

APA, Harvard, Vancouver, ISO, and other styles

36

Boadi, Dinah Ama. "Field measurement of methane and carbon dioxide production by cattle : use of the sulphur hexafluoride (SF6) tracer gas technique." 2002. http://hdl.handle.net/1993/19611.

Full text

APA, Harvard, Vancouver, ISO, and other styles

37

Cabo, Ângelo Daniel Santos do. "Comparison of equine caecal and faecal inoculums for estimating the nutritive value of concentrate feeds using the gas production technique." Master's thesis, 2015. http://hdl.handle.net/10348/5282.

Full text

Abstract:

Dissertação de Mestrado em Engenharia Zootécnica<br>Este trabalho teve por objetivo comparar a atividade fermentativa de inóculo cecal e fecal de equino utilizando a técnica da produção de gás. Para este efeito, foram utilizados dois equinos castrados canulados no ceco, alimentados ao nível da manutenção com um feno de prado natural (80%) e alimento composto (20%), sendo distribuída metade da quantidade diária às 08:00 h e a restante às 20:00 h, para se evitar seleção e desperdício de alimento. Foram estudados 2 alimentos (milho e cevada). As amostras de conteúdo cecal e de fezes foram r

APA, Harvard, Vancouver, ISO, and other styles

38

Wu, Ming-Ju, and 吳明儒. "The Use of a Gas Chromatography/Milli-whistle Technique for the On-line Monitoring of Ethanol Production Using Microtube Array Membrane (MTAM) Immobilized Yeast Cells." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/12259114364248062920.

Full text

Abstract:

碩士<br>國立臺灣師範大學<br>化學系<br>104<br>Hollow, poly (l-lactic acid) microtube array membranes (MTAM) were used in preparing membranes that contained immobilized yeast cells. To evaluate the performance of the developed system for continuous and fed-batch fermentation, a gas chromatography/milli-whistle device was used to on-line monitor the production of ethanol. The milli-whistle was connected to the outlet of a GC capillary, and when the fermentation gases and the GC carrier gas pass through it, a sound with a fundamental frequency is produced. The online data obtained for frequency vs. retentio

APA, Harvard, Vancouver, ISO, and other styles

39

Wang, Chia-Hui, and 王嘉惠. "Application of rumen simulation technique (Rusitec) to study the feasibility of reducing greenhouse gas production by increasing the by-product ratio in lactating Holstein cow diet." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/kq36zf.

Full text

Abstract:

碩士<br>國立屏東科技大學<br>動物科學與畜產系所<br>105<br>Increase of greeenhouse gas is the major source that contributes to the global warming and climate change. The most important greenhouse gases directly emitted from human activity include carbon dioxide (CO2), methane (CH4), nitrous oxide (N2O), and several others. Climate change results the unstable crops growing. Moreover, the fast increasing world population and decreasing plantable crop land even stimulate the crisis food supply. Exploring diverse feed resources, using local-produced feed, and diet formulation are important reseach issues regarding car

APA, Harvard, Vancouver, ISO, and other styles

40

Vlaming, Johannes Bernardus. "Quantifying variation in estimated methane emission from ruminants using the SF6 tracer technique : a thesis presented in partial fulfilment of the requirements for the degree of Doctor of Philosophy in Animal Science at Massey University, Palmerston North, New Zealand." 2008. http://hdl.handle.net/10179/730.

Full text

Abstract:

With the signing of the Kyoto Protocol, New Zealand must reduce its national greenhouse gas emissions. As New Zealand has a large proportion of its national emissions as methane (~31%), and methane (CH4) has a short atmospheric lifetime, it provides a good target for mitigation strategies. The initial aim of this research was to identify high and low CH4-emitting cattle to assess factors that contribute to low CH4 production. Initial studies using the SF6 tracer technique to estimate CH4 production could not identify consistently high and low CH4 emitters. Research was therefore undertaken to

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!