Search Results - (((vallecas OR valleys) OR valderas) OR (valle OR value))

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  1. 1281
  2. 1282

    Contenido de nutrimentos minerales en la hojarasca de bosques de pino, encino y pino-encino durante el proceso de descomposición by Colín Vargas, Claudia Irasema

    Published 2019
    “…In the Oak forest, the transfer of nutrients to the soil was 14.75 mg g-1 for Ca; 2.45 mg g -1 Mg; 7.61 mg g-1 K, 7.53 μg g-1 Cu and 71,405 μg g-1 of Mn; the transfer in the Pino-Oak forest was 17.87 mg g-1 for Ca; 3.05 mg g-1 Mg; 6.7 mg g-1 K; 10 μg g1 Cu and 351.51 μg g-1 of Mn; As for Fe and Zn, increases in their content were observed in the three types of ecosystems, with the Oak forest recording the highest values; 1023.39 μg g-1 and 112.73 μg g-1 respectively. …”
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  3. 1283

    Aplicación de la inversión conjunta de datos sísmicos y de resistividad para la generación de imágenes de alta resolución en la caracterización hidrogeológica by Infante Pacheco, Víctor Eduardo

    Published 2008
    “…Four lithologic units were identified within the first 30 m: silts with small thickness (0.30 m.), and Vp waves velocities less than 400 m/s and resistivity values between 10 and 16 ohm-m; Alluvium (Quaternary deposits) with thickness of 2 to 4 m, with three sub-units inside; sub-unit 1 is composed of sandy clay with velocities of 450 – 700 m/s for Vp waves and resistivity of 20 – 35 ohm-m; sub-unit 2 is composed of sandy clay with caliche nodules with velocities of 700 – 800 m/s for Vp waves and resistivity of 16 – 35 ohm-m; sub-unit 3 is composed of clays with gravels and caliche nodules and calcareous material with velocities of 300 – 550 m/s for Vp waves and resistivity of 50 – 150 ohm-m. …”
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  4. 1284

    Efecto de monensina sódica, aceites esenciales, taninos y nanopartículas de zinc como modificadores de la fermentación ruminal in vitro y sus propiedades reductoras de emisiones de... by Díaz Hernández, Emmanuel

    Published 2020
    “…From these results, it can be highlighted that essential oils showed a similar behavior to monensin sodium, maintaining the rumen pH and showing similar values in VFA production, with the exception of acetic acid, which significant decrease, in addition to increasing total gas production. …”
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  5. 1285
  6. 1286
  7. 1287
  8. 1288

    Implementación del sistema de producción de bioetanol en un reactor híbrido tipo batch para su uso en un motor de combustión interna. by Lucio López, Alex Nibardo de

    Published 2018
    “…From these mixtures were evaluated the levels of average maximum pressure in the chamber, duration of the first phase of combustion and autoignition values. With this research we obtain the methodology for the production of mediumscale bioethanol, from a raw material of organic origin and whose process gives rise to the study of biofuels from different types of biomass with high content of sucrose, obtaining reasonable quantities with the desired specifications for evaluation in different types of internal combustion engines.…”
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  9. 1289

    Efecto sinérgico de distintos extractos vegetales y Bacillus thuringiensis var. israelensis para el control de Aedes aegypti (L.) (diptera, culicidae) by Ramírez Villalobos, Jesica María

    Published 2020
    “…By combining LC50 and LC25 of plant extracts and Bti strains, it was possible to enhance the larvicidal activity being the best combination LC25 Bt-QAM + LC25 C. longa presenting synergistic effect with values of 94 for the co-toxicity factor and 1.9 for the synergism factor. …”
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  10. 1290
  11. 1291

    Implementación del sistema de producción de bioetanol en un reactor híbrido tipo batch para su uso en un motor de combustión interna. by Lucio López, Alex Nibardo de

    Published 2018
    “…From these mixtures were evaluated the levels of average maximum pressure in the chamber, duration of the first phase of combustion and autoignition values. With this research we obtain the methodology for the production of mediumscale bioethanol, from a raw material of organic origin and whose process gives rise to the study of biofuels from different types of biomass with high content of sucrose, obtaining reasonable quantities with the desired specifications for evaluation in different types of internal combustion engines.…”
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  12. 1292

    Efecto sinérgico de distintos extractos vegetales y Bacillus thuringiensis var. israelensis para el control de Aedes aegypti (L.) (diptera, culicidae) by Ramírez Villalobos, Jesica María

    Published 2020
    “…By combining LC50 and LC25 of plant extracts and Bti strains, it was possible to enhance the larvicidal activity being the best combination LC25 Bt-QAM + LC25 C. longa presenting synergistic effect with values of 94 for the co-toxicity factor and 1.9 for the synergism factor. …”
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  13. 1293
  14. 1294
  15. 1295

    Population growth and its implications (Crecimiento poblacional y sus implicaciones) by Badii Zabeh, Mohammad Hosein, Castillo, J., López, J. Fabián

    Published 2005
    “…Among these changes are improved social, educational, and economic status for women; higher values on individual children; accepting responsibility for our own lives; social security and political stability that give people the means and confidence to plan for the future; and knowledge, availability, and use of effective and acceptable means of birth control.…”
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  16. 1296

    Caracterización geoquímica y petrofísica de la formación la casita en afloramientos del noreste de México. by Acevedo García, Sandy Mariela

    Published 2018
    “…The results of total organic carbon (TOC) indicate good to excellent values but with a very low generation potential. Finally, petrophysical analyzes were carried out on rock cores, to obtain porosity and compressibility parameters; the results indicate a decrease in porosity as the confining pressure increases, however, there is a pressure where the rock increases porosity. …”
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  17. 1297

    Cuestionario de bruxismo autoinformado. Estudio piloto en el noreste de México by Cruz Fierro, Norma, González Ramírez, Mónica Teresa, Vanegas Farfano, Minerva

    Published 2019
    “…This single-factor structure was verified in a confirmatory factor analysis, which presented significant values and suitable goodness of fit indexes (χ2/df = 1.461; GFI = .916; AGFI = .857, CFI = .967, RMSEA = .068). …”
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  18. 1298

    Estrategias alimentarias del coyote Canis latrans SAY, 1833, en una UMA del noreste de México by López Soto, Juan Homero

    Published 2005
    “…Rest from species of economical importance (cattle) were no identified in the analyzed feces content, while White tailed deer Odocoileus virginianus texanus were only detected in significant values during their birth season. The indices show that biodiversity of the diet changes with the weather season. …”
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  19. 1299

    Aprovechamiento de polimeros biodegradables para la remoción de metales pesados y colorantes a nivel laboratorio by Salazar Alpuche, Ruby Yarisol

    Published 2007
    “…The maximum removal for Cd2+ , Zn2+ and Pb2+ was obtained at pH 2, 4 and 4, with values of 57.5, 64.7 and 99.7%, respectively. For all dyes tested, the maximum removal was at pH 12 with 47.1% (Crystal Scarlet), 87.9% (RBBR) and 96.9% (Red Ponceau). …”
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  20. 1300

    Caracterización geoquímica y petrofísica de la formación la casita en afloramientos del noreste de México. by Acevedo García, Sandy Mariela

    Published 2018
    “…The results of total organic carbon (TOC) indicate good to excellent values but with a very low generation potential. Finally, petrophysical analyzes were carried out on rock cores, to obtain porosity and compressibility parameters; the results indicate a decrease in porosity as the confining pressure increases, however, there is a pressure where the rock increases porosity. …”
    Get full text
    Tesis

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