Libros de ciencias, página 706 de 2700

For an increasing number of people, global warming is not an academic and scientific debate, but a matter of survival. As the planet warms at a rate of four degrees Fahrenheit per century, violent storms are increasing in frequency, icebergs are melting, sea level is rising, species are losing their habitats, and temperature records are being broken. Feeling the Heat consists of chapter-length visits by well-known authors to actual world "hot" spots, where people are already coping day-to-day with the consequences of climactic disruption. The locations for the book were strategically chosen because each represents a separate and important global warming impact, such as rising tides, melting glaciers, evolving ecosystems and air pollution. Feeling the Heat takes global warming out of the realm of armchair speculation and arcane scientific debate, revealing the process of climate change to be ongoing, serious and immediate.

This graduate-level text, intended for any student of physics who requires a thorough grounding in the quantum theory of nonrelativistic scattering, emphasizes the time-dependent approach. 1983 editi

Divulgacion Infantil

This monograph introduces modern developments on the bound state problem in Schrodinger potential theory and its applications in particle physics. The Schrodinger equation provides a framework for dealing with energy levels of N-body systems. It was a cornerstone of the quantum revolution in physics of the twenties but re-emerged in the eighties as a powerful tool in the study of spectra and decay properties of mesons and baryons. This book begins with a detailed study of two-body problems, including discussion of general properties, level ordering problems, energy level spacing and decay ...

Los cereales son los cultivos más importantes a nivel mundial, tanto por la superficie que se destina a su cultivo como por las producciones obtenidas, que constituyen la base de la alimentación de la mayoria de los pueblos. En este libro se aborda el estudio de los principales cereales cultivados, tanto de invierno (trigo, cebada, avena, centeno y triticale) como de primavera verano (arroz, maiz, sorgo y cereales menores).

2ª Edición corregida y aumentada. Suelo y roca. Geotecnia. Origen del suelo. Procesos de cementación. Granulometría de los suelos. Propiedades elementales. Porosidad. Indice de poros. Peso específico. Humedad. Grado de saturacion. Indice de densidad. Equivalente de arena. Limites de Atterberg. Grafico de Casagrande. Indice de fluidez. Propiedades fisico - quimicas de las arcillas. Actividad. Susceptibilidad y tixotropia. El agua en el terreno. Permeabilidad. Principio de presion efectiva. Tension superficial. Electroosmosis. Compresibilidad e hinchamiento de los suelos parcialmente saturados. Transferencia de humedad. Resistencia y deformacion. Suelos parcialmente saturados sometidos a esfuerzos cortantes. Encuadernacion: Tela con sobrecubierta.