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Browsing by Subject "Methane"

Now showing items 1-20 of 37

Application of an open circuit indirect calorimetry system for gaseous exchange measurements in small ruminant nutrition

Criscioni Ferreira, Patricia Fabiola (Universitat Politècnica de València, 2016-05-16)

[EN] The main objective of this Thesis was to study the energy metabolism in small ruminants under different nutrition sceneries. As methodology we utilized indirect calorimetry instead of direct calorimetry or feeding ...
Catalytic activation of ceramic H2 membranes for CMR processes

Escolástico Rozalén, Sonia; KJOLSETH, C.; Serra Alfaro, José Manuel (Elsevier, 2016-11-01)

[EN] The application of catalytic membrane reactors can overcome some of the disadvantages that reactions for the direct conversion of methane to fuels and petrochemicals present. Hydrogen separation membranes can shift ...
Cation Gating and Relocation during the Highly Selective Trapdoor Adsorption of CO2 on Univalent Cation Forms of Zeolite Rho

Lozinska, Magdalena M.; Mowat, John P. S.; Wright, Paul A.; Thompson, Stephen P.; Jorda Moret, Jose Luis; Palomino Roca, Miguel; Valencia Valencia, Susana; Rey Garcia, Fernando (American Chemical Society, 2014-03-25)

Adsorption of CO2 and CH4 has been measured on the Na-, K-, and Cs-forms of zeolite Rho (0 9 bar; 283 333 K). Although CH4 is excluded, CO2 is readily taken up, although the uptake at low pressures decreases strongly, in ...
Characterization of gas emissions from a Mediterranean broiler farm

Calvet Sanz, Salvador; Cambra López, María; Estellés, F.; Torres Salvador, Antonio Germán (Poultry Science Association, 2011)

[EN] Gas emissions from broiler production have been the subject of intensive research. However, little experimental information exists for farms under the particular management and environmental conditions of the European ...
Conversion of Methane into C1 Oxygenates by Deep-UV Photolysis on SolidSurfaces: Influence of the Nature of the Solid and Optimization of PhotolysisConditions

Sastre Calabuig, Francesc; Fornes Seguí, Vicente; Corma Canós, Avelino; García Gómez, Hermenegildo (Wiley-VCH Verlag, 2012)

[EN] Deep-UV photolysis (either 165 or 185 nm) of surface hydroxy groups leads to homolytic O H bondcleavage with the generation of oxyl radicals that can initiate the room-temperature radical-chain methane activation. ...
Desarrollo de un modelo de cálculo de Huella de Carbono para la producción porcina en España

Arias Polo, Isabel (Universitat Politècnica de València, 2016-10-18)

[ES] El sector porcino es el principal sector en cuanto a producción final ganadera en España. Se trata además de un sector en constante crecimiento y con unas implicaciones ambientales evidentes dadas las emisiones de ...
Desarrollo de una herramienta de cálculo de emisiones de gases de efecto invernadero y amoníaco para granjas porcinas

Herrero Ballester, Ricardo Gonzalo (Universitat Politècnica de València, 2015-10-27)

[ES] La reducción de las emisiones de gases de efecto invernadero y amoniaco por parte de la ganadería es uno de los retos de este sector. Para ello, en primer lugar es sustancial conocer, de la forma más precisa posible, ...
Determination of the proportion of the ingested gross energy lost as exhaled methane by dairy goats consuming contrasting concentrate ingredients in mixed rations

López Luján, Mª del Carmen; Ródenas Martínez, Luis; Piquer Querol, Olga; Martinez-Paredes, Eugenio; Cerisuelo, A.; Cervera Fras, Mª Concepción; Fernández Martínez, Carlos Javier (NRC Research Press (Canadian Science Publishing), 2010-12)

[EN] Twelve 2-yr-old, dry Murciano-Granadina dairy goats were selected and divided into four equal groups based on similar body weight (38.41 +/- 0.78 kg). The four treatments were mixed diets with approximately 600 g ...
Dual-phase membrane based on LaCo0.2Ni0.4Fe0.4O3-x-Ce0.8Gd0.2O2-x composition for oxygen permeation under CO2/SO2-rich gas environments

García-Fayos, Julio; Balaguer Ramirez, Maria; Baunmann, Stefan; Serra Alfaro, José Manuel (Elsevier, 2018)

[EN] A dual-phase material with high ambipolar conductivity composed by the perovskite LaCo0.2Ni0.4Fe0.4O3-delta (LCNF) as the electronic phase and the fluorite Ce0.8Gd0.2O2-delta (CGO20) as oxide-ion conductor is proposed ...
Dynamic model development of enteric methane emission from goats based on energy balance measured in indirect open circuit respiration calorimeter

Fernández Martínez, Carlos Javier (Elsevier, 2018)

[EN] A dynamic model of methane (CH4) emission in goats was proposed and parameterized from energy balance experimental data. The model focused on dry matter intake and fat content of the diet as explanatory variables for ...
Efecto de dos niveles de almidón en la dieta sobre la producción de metano de cabras murciano-granadinas en lactación

Monllor Guerra, Paula (Universitat Politècnica de València, 2013-03-10)

[ES] 10 cabras en lactación con 2 dietas que difieren en el nivel de almidón. Se evaluó la producción de CH4 por intercambio respiratorio. La dieta con un 15% de almidón a penas disminuyó la producción de CH4 (4,06%) frente ...
Efecto de la dieta sobre la producción de metano en ganado caprino: resultados preliminares y puesta a punto de la metodología

López Luján, Mª del Carmen (Universitat Politècnica de València, 2011-07-22)

Se realizaron dos pruebas de digestibilidad mediante la administración de dos dietas que difirieron únicamente en el tipo de cereal (grano de cebada o maíz). La producción de metano y CO2, y el consumo de O2, se determinaron ...
Effect of carbohydrate source of diet in CH4 and CO2 production from dairy goats

Pérez Plumed, Jesús (Universitat Politècnica de València, 2014-07-30)

[ES] Objetivo: evaluación de la producción de metano y dióxido de carbono en cabras lecheras de la raza Murciano-granadina alimentadas con tres dietas diferentes . Se realizó también un estudio in vitro, empleando las ...
Effect of different physical form alfalfa on methane production in Murciano-Granadina dairy goats

López Luján, Mª del Carmen; Ródenas Martínez, Luis; Piquer Querol, Olga; Martinez-Paredes, Eugenio; Cerisuelo, Alba; Pascual Amorós, Juan José; Fernández Martínez, Carlos Javier (Taylor & Francis, 2010-09)

[EN] To study the effect of physical form of alfalfa on methane production, long (L) or chopped (C) alfalfa hay was fed with barley (B) or corn (C) to three 2 years old Murciano-Granadina dairy goats. Sunflower meal ...
Effect of hydrogen addition on the OH* and CH* chemiluminescence emissions of premixed combustion of methane-air mixtures

Reyes, M.; Tinaut, F.V.; Giménez, B.; Pastor, José V. (Elsevier, 2018)

[EN] Chemiluminescence emissions measurements of OH* and CH* are used to characterize the combustion of blends of methane and hydrogen in air in a constant volume combustion bomb, with two sets of initial conditions. The ...
Effect of water and straw management practices on methane emissions from rice fields: A review through a meta-analysis

Sanchís Jiménez, Elena María; Ferrer Roglán, Marta; Torres, Antonio G.; Cambra López, María; Calvet Sanz, Salvador (Mary Ann Liebert, 2012-12)

[EN] Rice fields contribute substantially to global warming of the atmosphere through emission of methane (CH4). This article reviews the state of the art of factors affecting CH4 emissions in rice fields, focusing on soil ...
Emisiones de gases en el cultivo del arroz: efecto de la gestión de la paja

Sanchís Jiménez, Elena María (Universitat Politècnica de València, 2015-03-06)

[EN] In flooded soils such as rice cultivation, CH4 is generated in large quantities, as a product of anaerobic degradation of organic matter. This CH4 is released to the atmosphere mainly through diffuse transport through ...
Emisiones de gases procedentes de purines obtenidos a partir de cerdos de cebo alimentados con pulpas cítricas

Nordlund Sierra, David Pablo (Universitat Politècnica de València, 2019-10-02)

[ES] El cerdo se consume de forma amplia en todo el mundo, y en su cría se producen cantidades relevantes de gases como el CH4 (metano) y el NH3 (amoniaco), los cuales tienen un efecto negativo sobre el medio ambiente. El ...
Estrategias de mitigación frente al Cambio Climático en los arrozales de la Albufera de Valencia

Domenech Martínez, Sergio (Universitat Politècnica de València, 2019-10-04)

[ES] El Cambio Climático es el mayor problema ambiental al que se enfrenta la humanidad en la actualidad, ya que afecta a todo el planeta. El clima determina las condiciones de vida y un cambio en éste supondría grandes ...
Estudio de deshidoaromatización de metano sobre catalizadores 3%mo/hzsm-5 y permeación de hidrogeno a través de membranas La6W012

Zanón González, Raquel (Universitat Politècnica de València, 2016-01-18)

[EN] Study of methane dehydroaromatization on 3%Mo/HZSM-5 catalysts at 700°C and 0.207 bar, and occasionally at higher temperature (750°C). Hydrogen permeation through ceramic membranes made of La6W012 was investigated ...