División de Ciencias Ambientales: Envíos recientes
Mostrando ítems 141-160 de 448
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Enhancing saccharification of Agave tequilana bagasse by oxidative delignification and enzymatic synergism for the production of hydrogen and methane
(Elsevier, 2018)"Agave tequilana bagasse is a suitable lignocellulosic residue for energy production. However, the presence of lignin and the heterogeneous structure of hemicellulose may hinder the availability of polysaccharides. In this ... -
Temporal and longitudinal biofilm matrix analysis of a biofilter treating ethyl acetate during ozonation
(Springer, 2018)"The present paper focuses on the biofilm composition and pattern of biomass in gas biofiltration of ethyl acetate working under continuous addition of ozone (O3). Two biofilters were operated for 230 days, one under ... -
Effects of five Lacandon Maya agroforestry trees on soil nematode trophic group composition
(Springer, 2018)"The Lacandon Maya have managed their lands in Chiapas, Mexico for hundreds of years without long-term soil degradation by applying their traditional swidden agroforestry system. Lacandon land managers plant and care for ... -
Producción de hidrógeno en continuo a partir de hidrolizados enzimáticos de bagazo de agave obtenidos con la enzima nacional Cellulase 50 XL
(2019-08-26)"El bagazo de agave es un residuo lignocelulósico que puede ser utilizado como sustrato para la producción de hidrógeno (H2). Sin embargo, debido a su estructura compleja, es necesario someterlo a un proceso de sacarificación ... -
Efecto del tamaño de la bellota y del cambio climático sobre la germinación de encinos (Qercus SPP.)
(2019-08-23)"La producción de semillas en ecosistemas forestales está regulada por factores ambientales y genéticos, donde los árboles parentales influyen en los rasgos de las semillas. Así, el tamaño de las semillas puede influir en ... -
The role of organic load and ammonia inhibition in anaerobic digestion of tannery fleshing
(Elsevier, 2018)"In this study, batch tests on anaerobic digestion of tannery fleshing (skin-residue waste from hides’ tanning process), as sole substrate, have been performed with the purpose of assessing the effects of high substrate ... -
Progress and opportunities for monitoring greenhouse gases fluxes in Mexican ecosystems: the MexFlux network
(Universidad Nacional Autónoma de México, Centro de Ciencias de la Atmósfera, 2013)"Para entender los procesos de los ecosistemas desde un punto de vista funcional es fundamental entender las relaciones entre la variabilidad climática, los ciclos biogeoquímicos y las interacciones superficie-atmósfera. ... -
Water defluoridation with special emphasis on adsorbents-containing metal oxides and/or hydroxides: A review
(Elsevier, 2015)"Fluoride contamination in drinking water has been recognized as one of the major worldwide problems since this represents a serious threat to human health. The World Health Organization (WHO) recommends the guideline value ... -
Community structure of a southern Chihuahuan Desert grassland under different grazing pressures
(Elsevier, 2009)"The effect of different grazing intensities on the semiarid grasslands of the southern Chihuahuan Desert was studied using a fence-line contrast between a moderately grazed cattle ranch, from which goats and sheep had ... -
Germinación de especies de cactáceas en categoría de riesgo del desierto chihuahuense
(Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias, 2011)"Se presenta una síntesis de los principales resultados sobre germinación de semillas de 28 cactáceas con estatus de conservación y cuatro sin estatus, nativas del desierto chihuahuense. Se incluye la información referente ... -
Comunidades de roedores nocturnos en un ecotono de matorrales micrófilos y zacatal gipsófilo en San Luis Potosí, México
(Instituto de Biología, Universidad Nacional Autónoma de México, 2008)"En el presente estudio se compara la abundancia y riqueza entre los roedores nocturnos de un zacatal gipsófilo y los de 3 matorrales micrófilos, en el norte de San Luis Potosí. Los muestreos se llevaron a cabo en sitios ... -
Rangeland systems in developing nations: conceptual advances and societal implications
(Springer, 2017)"Developing-country rangelands are vast and diverse. They are home to millions who are often poor, politically marginalized, and dependent on livestock for survival. Here we summarize our experiences from six case-study ... -
An overview of reclaimed wastewater reuse in gold heap leaching
(Taylor & Francis, 2016)"The intensive use of groundwater by the gold mining industry is an important sustainability concern, especially in arid and semiarid regions where groundwater is a scarce resource. Alternatives, such as water reuse, ... -
Paths of water entry and structures involved in the breaking of seed dormancy of Lupinus
(Elsevier, 2016)"Physical dormancy is the water impermeability of the seed coat caused by one or more palisade cell layer(s) called macrosclereids. The specialised structure for water entry sites is the water gap, which serves as a detector ... -
Allometry of root branching and its relationship to root morphological and functional traits in three range grasses
(Oxford University Press, 2011)"The study of proportional relationships between size, shape, and function of part of or the whole organism is traditionally known as allometry. Examination of correlative changes in the size of interbranch distances (IBDs) ... -
Landscape composition influences abundance patterns and habitat use of three ungulate species in fragmented secondary deciduous tropical forests, Mexico
(Elsevier, 2015)"Secondary forests are extensive in the tropics. Currently, these plant communities are the available habitats for wildlife and in the future they will possibly be some of the most wide-spread ecosystems world-wide. To ... -
Induced climate change impairs photosynthetic performance in Echinocactus platyacanthus, an especially protected Mexican cactus species
(Elsevier, 2014)"The responses of desert plants to climate warming have been poorly assessed, perhaps due to the overall expectation that desert vegetation will expand as a consequence of this component of climate change. However, determining ... -
Combined effect of water potential and temperature on seed germination and seedling development of cacti from a mesic Argentine ecosystem
(Elsevier, 2017)"Global climatic change will be associated with an increase of droughts and heat waves, which can affect seed germination and plant population dynamics. Cactus species from mesic ecosystems are likely to be more affected ... -
Biomasa aérea de Vochysia guatemalensis en una selva alta perennifolia de La Chinantla, Oaxaca
(Universidad Juárez Autónoma de Tabasco, 2017)"Se estimó la biomasa aérea de Vochysia guatemalensis Donn. Smith., una especie de importancia ecológica y económica en el sur-sureste de México. Se derribaron siete árboles de cuatro categorías diamétricas (10, 15, 20 y ... -
Effects of surface-engineered nanoparticle-based dispersants for marine oil spills on the model organism Artemia franciscana
(American Chemical Society, 2014)"Fine particles are under active consideration as alternatives to chemical dispersants for large-scale petroleum spills. Fine carbon particles with engineered surface chemistry have been shown to stabilize oil-in-water ...