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Análisis Hidrogeomorfológico del norte de México
Se ha tratado de explicar la distribucion geografica de la cactacea Astrophytum myriostigma en el norte de Mexico, dando como resultado una teoria que supone que existio una conexion hidrologica entre San Luis Potosi y la Comarca Lagunera. En otros tiempos, los grandes bolsones que existen en la region lagunera fueron el sitio de grandes lagos. El clima se mantuvo asi hasta cerca de los 18,000 anos A.P., y hasta finales del Winsconsiniano el clima en el norte de Mexico fue frio y humedo; en el area se encontraban extensos cuerpos de agua, ademas de sus playas. En este trabajo se modelo la hidrologia superficial del norte de Mexico a partir de un Modelo Digital de Elevaciones. Los modelos hidrologicos obtenidos se contrastaron con un analisis espectral de sedimentos y coberturas de edafologia y sedimentos pleistocenicos; asi como contra el nicho potencial de A. myriostigma para verificar la concordancia visual de los margenes de los paleorrios y paleolagos con la distribucion de esta especie. Tambien se analizo la concordancia visual de los modelos con cartografia antigua del norte de Mexico.
Cambio en la Vegetación Del Río Nazas
Los sensores remotos de alta resolucion espacial ofrecen nuevas posibilidades para estudios de ecosistemas forestales, esta tecnologia asociada con el desarrollo de metodologias conocidas como indices de vegetacion se convierten en una prioridad para la toma acertada de decisiones en la planeacion y manejo sustentable de los recursos naturales, asi como una fuente importante de fundamentos para la biologia de la conservacion, y la ecologia de paisaje. Por lo tanto, determinar los cambios en la cobertura vegetal de la vegetacion riparia, especificamente del bosque de galeria del Rio Nazas en el segmento Canon de Fernandez -Presa San Fernando, en el Municipio de Lerdo, Durango, Mexico. Mediante el analisis digital de imagenes de satelite y bases de datos geograficas, permite entre otras cosas, detectar el grado de deterioro de estos ecosistemas, y su relacion con actividades productivas y de conservacion. Asimismo la elaboracion de poligonos realizada sobre los manchones de vegetacion riparia, en imagenes de alta resolucion espacial, resulto ser una alternativa util para la cuantificacion y comparacion espacio-temporal, y una propuesta de caracterizacion de la zona."
Hyperborder
Roving vigilantes, fear-mongering politicians, hysterical pundits, and the looming shadow of a seven hundred-mile-long fence: the US–Mexican border is one of the most complex and dynamic areas on the planet today. Hyperborder provides the most nuanced portrait yet of this dynamic region. Author Fernando Romero presents a multidisciplinary perspective informed by interviews with numerous academics, researchers, and organizations. Provocatively designed in the style of other kinetic large-scale studies like Rem Koolhaas's Content and Bruce Mau’s Massive Change, Hyperborder is an exhaustively researched report from the front lines of the border debate.
Trancoso
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Global Political Ecology
The world is caught in the mesh of a series of environmental crises. So far attempts at resolving the deep basis of these have been superficial and disorganized. Global Political Ecology links the political economy of global capitalism with the political ecology of a series of environmental disasters and failed attempts at environmental policies. This critical volume draws together contributions from twenty-five leading intellectuals in the field. It begins with an introductory chapter that introduces the readers to political ecology and summarizes the books main findings. The following seven sections cover topics on the political ecology of war and the disaster state; fuelling capitalism: e...
Handbook of Solid Phase Microextraction
The relatively new technique of solid phase microextraction (SPME) is an important tool to prepare samples both in the lab and on-site. SPME is a "green" technology because it eliminates organic solvents from analytical laboratory and can be used in environmental, food and fragrance, and forensic and drug analysis. This handbook offers a thorough background of the theory and practical implementation of SPME. SPME protocols are presented outlining each stage of the method and providing useful tips and potential pitfalls. In addition, devices and fiber coatings, automated SPME systems, SPME method development, and In Vivo applications are discussed. This handbook is essential for its discussion of the latest SPME developments as well as its in depth information on the history, theory, and practical application of the method. Practical application of Solid Phase Microextraction methods including detailed steps Provides history of extraction methods to better understand the process Suitable for all levels, from beginning student to experienced practitioner
Advances in Comparative Immunology
Immunologists, perhaps understandably, most often concentrate on the human immune system, an anthropocentric focus that has resulted in a dearth of information about the immune function of all other species within the animal kingdom. However, knowledge of animal immune function could help not only to better understand human immunology, but perhaps more importantly, it could help to treat and avoid the blights that affect animals, which consequently affect humans. Take for example the mass death of honeybees in recent years – their demise, resulting in much less pollination, poses a serious threat to numerous crops, and thus the food supply. There is a similar disappearance of frogs interna...
