Física. Tomo I: Mecánica, ondas y termodinámica (Volumen 1)

Este libro pertenece a una colección de materiales didácticos desarrollada con el respaldo del Programa de Apoyo a Proyectos para la Innovación y el Mejoramiento de la Enseñanza para apoyar la enseñanza de las asignaturas de la Suárea de Ingeniería de la Carrera de Ingeniería Química Metalúrgica.

Soil is a pivotal component of the environment and the maintenance of soil quality is critical for ensuring the sustainability of the environment and the biosphere. The use of fertilizers has increased at a faster rate than global food production. Modern agriculture is dependent on phosphorus derived from phosphate rock, which is a non-renewable resource. It is needed to improve P acquisition efficiency for both low input and intensive agroecosystems. However, few studies have focused on cereal-legume interactions with regard to soil P. The objective of this work was to study the effects of...

Dos de los más reconocidos estudiosos iberoamericanos del problema ecológico analizan si la crisis ecológica actual constituye la crisis de toda la civilización industrial, y si la ciencia y la política contribuyen realmente a resolver el problema generalizado ya en todo el mundo. Se preguntan si el planeta ha dejado de ser parte de nuestro cuerpo y si estamos, como afirma el historiador J. McNeill, inmersos en "un gigantesco experimento fuera de control".

Everyone has questions about our universe: How hot is Venus? Can you distinguish between a pulsar and a quasar? Is there a universe or a multiverse? Where do we fit into the infinitely grand scheme of things? How do we map the Cosmic Microwave Background? Most tantalizing of all: Is there anyone out there? This small volume encapsulates the terrifying hugeness of the cosmos into bite-sized particles that mere earthlings can understand. It takes you on a cosmic tour, shedding light on the most awesome of objects and places and explaining some very big ideas, concepts, and discoveries. It also...