Search Results - (vary OR (mark OR mar))*

Estimación del contenido de carbono total de especies arbóreas y arbustivas en áreas con diferente uso histórico, en una fracción del matorral espinoso tamaulipeco, Linares, N. L.... by Yerena Yamallel, José Israel

“…By a completely randomized ANOVA there were not any differences found in the average of total carbon content of the species (Pr < 0.0564), this content varied from 44.25 to 47.08% with an general average of 45.52%; Cordia boissieri (44.25 ± 1.52%) and Acacia farnesiana (44.52 ± 1.37%) in the site of Traditional Agriculture those were the species that were with the smallest values, Forestiera angustifolia (47.08 ± 1.27%) with highest in the site of Extensive Foraging. …”
Get full text

Diseño y construcción de un reactor hibrido tipo batch para la producción de biocombustibles: biodiésel y bioetanol como caso de estudio. by Solís Ulloa, Juan Carlos

“…In order to scale this parameter to reactor level, the RMA varied from 3: 1 and 6: 1 (6 molecules of methanol per 1 of oil used) and the time of 15, 30, 45 and 60 minutes of process obtaining as a result that with a RMA of 6: 1 with a time of 60 minutes a conversion of 100 % was obtained, all these experiments were carried out at a temperature of 60 ◦ C and 400 rpm. …”
Get full text

Evaluación de la expresión diferencial de citocinas proinflamatorias en un modelo murino de infección por distintos serotipos de Streptococcus agalactiae by Estupiñan Jiménez, José Roberto

“…The cytokine expression profiles varied after infection with the different serotypes. …”
Get full text

Mecanismos de resistencia y perfil de expresion de genes involucrados en la resistencia a la deltametrina en poblaciones de Aedes aegypti (L.) (Diptera: Culicidae) en México by Contreras Perera, Yamili Jazmin

“…The frequency of L410 increased from 1.18 to 2.63 for V1016 an increase was observed between 1.19 and 2.79 times, and C1534 was fixed in all strains after deltamethrin selection. Enzymatic activity varied significantly during the generations of selection. …”
Get full text

Estimación del contenido de carbono total de especies arbóreas y arbustivas en áreas con diferente uso histórico, en una fracción del matorral espinoso tamaulipeco, Linares, N. L.... by Yerena Yamallel, José Israel

“…By a completely randomized ANOVA there were not any differences found in the average of total carbon content of the species (Pr < 0.0564), this content varied from 44.25 to 47.08% with an general average of 45.52%; Cordia boissieri (44.25 ± 1.52%) and Acacia farnesiana (44.52 ± 1.37%) in the site of Traditional Agriculture those were the species that were with the smallest values, Forestiera angustifolia (47.08 ± 1.27%) with highest in the site of Extensive Foraging. …”
Get full text

Dieta invernal de tecolote llanero (athene cunicularia) y su interacción con dos especies simpátricas: búho cuerno corto (asio flammeus) y lechuza de campanario (tyto alba), en el... by Valdez Gómez, Héctor Enrique

“…It was found an average of 6.3 categorized habitats per individual convex polygon, showing a marked preference for low density short grasses and crops. …”
Get full text

Dieta invernal de tecolote llanero (athene cunicularia) y su interacción con dos especies simpátricas: búho cuerno corto (asio flammeus) y lechuza de campanario (tyto alba), en el... by Valdez Gómez, Héctor Enrique

“…It was found an average of 6.3 categorized habitats per individual convex polygon, showing a marked preference for low density short grasses and crops. …”
Get full text

Evaluación de la calidad del agua de tres ríos de la subcuenca del “Río Limón” en el estado de Nuevo León by Ríos Saucedo, Julio César

“…However none chamical constituent exceeded set standards but concentrations of several constituents (pH, CE, Ca2+, Mg2+ Na1 + CO3 - HCO3 Cl- , SO42-) varied according to time, river and location. The time source of variation was explained by increased discharge which appeared to control the concentration of several chemical constituents by dilution. …”
Get full text

Evaluación del contenido de carbono en bosques del sur de Nuevo León by Domínguez Cabrera, Gabriel

“…Therefore, the main objective was to evaluate forest capacity for carbon sequestration at the South of Nuevo León, in order to test that this capacity varies among forest types. To do so, from 8 to 12 trees belonging to Pinus teocote, Pinus pseudostrobus and Quercus spp., were felled to obtain total dry weight and to adjust diameter equations for diameters above 1.3 m. …”
Get full text

Evaluación de la calidad del agua de tres ríos de la subcuenca del “Río Limón” en el estado de Nuevo León by Ríos Saucedo, Julio César

“…However none chamical constituent exceeded set standards but concentrations of several constituents (pH, CE, Ca2+, Mg2+ Na1 + CO3 - HCO3 Cl- , SO42-) varied according to time, river and location. The time source of variation was explained by increased discharge which appeared to control the concentration of several chemical constituents by dilution. …”
Get full text

Evaluación del contenido de carbono en bosques del sur de Nuevo León by Domínguez Cabrera, Gabriel

“…Therefore, the main objective was to evaluate forest capacity for carbon sequestration at the South of Nuevo León, in order to test that this capacity varies among forest types. To do so, from 8 to 12 trees belonging to Pinus teocote, Pinus pseudostrobus and Quercus spp., were felled to obtain total dry weight and to adjust diameter equations for diameters above 1.3 m. …”
Get full text

Distribución ecológica de la herpetofauna de la Sierra de Gomas, en el estado de Nuevo León. by Nevárez de los Reyes, Manuel

“…The abundance of the species is markedly seasonal, being greater in spring and descending thereafter with the passage of the seasons. …”
Get full text

Distribución ecológica de la herpetofauna de la Sierra de Gomas, en el estado de Nuevo León. by Nevárez de los Reyes, Manuel

“…The abundance of the species is markedly seasonal, being greater in spring and descending thereafter with the passage of the seasons. …”
Get full text

Valor nutricional de forrajes nativos del norte de México by Guerrero Cervantes, Maribel

“…The chemical composition was determined in each plant type; in addition, the extent and degree of ruminal fermentation, using the in vitro gas production technique with or whitout polietilene glycol and the in situ digestibility of dry matter, crude protein and neutral detergent fiber were also determined. Species varied in their contents (%DM) of ash (4.0-32), CP (3.9-18.6), NDF (18.7-65.1), ADF (10.6-42.3), lignin (1.1-14.5) and CT (0.1-9.1). …”
Get full text

Valor nutricional de forrajes nativos del norte de México by Guerrero Cervantes, Maribel

“…The chemical composition was determined in each plant type; in addition, the extent and degree of ruminal fermentation, using the in vitro gas production technique with or whitout polietilene glycol and the in situ digestibility of dry matter, crude protein and neutral detergent fiber were also determined. Species varied in their contents (%DM) of ash (4.0-32), CP (3.9-18.6), NDF (18.7-65.1), ADF (10.6-42.3), lignin (1.1-14.5) and CT (0.1-9.1). …”
Get full text

Ecología y fisiología en las primeras fases de crecimiento de plantas suculentas en el sur del desierto chihuahuense en México y las montañas de Córdoba en Argentina. by Pérez Sánchez, Reyes Manuel

“…The RWC, R/S ratio and RGR and their components varied in response to microenvironments for some species, but not consistently. …”
Get full text

Ecología y fisiología en las primeras fases de crecimiento de plantas suculentas en el sur del desierto chihuahuense en México y las montañas de Córdoba en Argentina. by Pérez Sánchez, Reyes Manuel

“…The RWC, R/S ratio and RGR and their components varied in response to microenvironments for some species, but not consistently. …”
Get full text

Biology and Society: Exposing the Vital Linkages: The Relationship between the Study of Life and Humanity's Chances for a Future by Wilson, Larry David, Lazcano-Villarreal, David

Get full text

Aislamiento y selección de cepas mutantes de Hirsutella citriformis inducidas por el agente químico: metanosulfonato de etilo (EMS). by Cruz Juárez, Georgina

“…Techniques such as biphasic culture on different low-cost substrates (sorghum, rice and oats) were evaluated to obtain the highest conidia production that would be used in classical mutagenesis with the chemical agent ethyl methane sulfonate (EMS) which has been successfully used to introduce changes of a single base in the DNA, a mutation protocol was established varying times and concentrations for the obtaining of mutant strains, which were characterized based on radial growth, production of conidia and speed of germination in media as PDA and PDA with yeast extract. …”
Get full text

Aislamiento y selección de cepas mutantes de Hirsutella citriformis inducidas por el agente químico: metanosulfonato de etilo (EMS). by Cruz Juárez, Georgina

“…Techniques such as biphasic culture on different low-cost substrates (sorghum, rice and oats) were evaluated to obtain the highest conidia production that would be used in classical mutagenesis with the chemical agent ethyl methane sulfonate (EMS) which has been successfully used to introduce changes of a single base in the DNA, a mutation protocol was established varying times and concentrations for the obtaining of mutant strains, which were characterized based on radial growth, production of conidia and speed of germination in media as PDA and PDA with yeast extract. …”
Get full text