Entenda os testes de resistência e fadiga. Este livro oferece uma análise detalhada das metodologias para avaliar a durabilidade e desempenho dos materiais.

Raúl Vicente lleva veinte años trabajando como bombero forestal. La mayor parte de este tiempo ha dirigido una brigada en la base helitransportada de la BRIF de Daroca, en Aragón. Desde allí, los bomberos forestales son movilizados para participar en la extincion de los incendios mas devastadores que se producen en cualquier parte de la geografia española. En estas paginas, Raul Vicente nos hace un hueco en el helicoptero junto a el y sus compañeros para hacernos participes de sus experiencias y permitirnos conocer de cerca una profesion tan gratificante como dura. Hermano fuego comienza siendo un viaje a la extincion de incendios forestales, pero termina siendo mucho mas: todo un recorrido vital por las emociones que se esconden en el corazon de las llamas.

Forestry in Ireland has never been so contentious. Over the last century the area of Irish woodland has increased tenfold, mostly through the planting of imported conifer species; government policy is to plant more trees to supply industry and to tackle climate change, both urgent priorities. But there has been a backlash from farmers, local communities, environmentalists and EU regulators. The rate of planting has plummeted. And up to one-third of new plantations in Ireland are failed forests that should never have been planted in the first place. How did we end up in this peculiar situation?Island of Woods traces the history of Irish forests over the last 10,000 years. It explains why Ireland lost so much of its forest cover, before a burst of tree-planting over the last few decades. It examines the state of Irish forestry today and sketches a way forward for our woods that balances commercial, environmental and social goals a vision of a different type of forestry that could transform the Irish landscape and re-establish a genuine tree culture in the country.This engaging examination of Irish woodlands relates historical events to present-day concerns and controversies, drawing out crucial themes that continue to shape the Irish landscape.

Genética cuantitativa y selección en el mejoramiento forestal es una obra que logra organizar desde los conceptos hasta la utilización de los métodos y procedimientos de la mejora genética moderna, con enfasis en el mejoramiento de especies forestales, pero de aplicacion general en el campo agroforestal. Ademas, revisa los albores de la mejora genetica en arboles y recorre brevemente la historia de su desarrollo en Costa Rica.El texto logra combinar elementos teoricos tratados con rigor, enlazados con procedimientos y metodologias de analisis e interpretacion de la informacion. Tambien se revisan con detalle las bases de un programa formal de mejoramiento: desde el inicio a partir de la seleccion de arboles superiores, evaluacion genetica en campo, estimacion y prediccion de parametros poblacionales, hasta los diseños de apareamiento para avanzar hacia la siguiente generacion de mejoramiento.En la segunda seccion se muestra el uso del software SELEGEN desarrollado en EMBRAPA, Brasil, que resuelve el analisis complejo de datos provenientes de mas de 200 tipos de ensayos geneticos, basado en los procedimientos REML-BLUP. De igual manera, se muestra en detalle la forma de organizacion de los datos para cada tipo de modelo estadistico experimental, su analisis respectivo y la salida de informacion que genera el software.Asimismo, se organizan los tipos de modelos segun sea para ensayos de medio hermanos, hermanos completos, clones, en una sola localidad o varias, asi como con inclusion de covarianzas. Se incluyen los procedimientos de seleccion de varios caracteres simultaneamente, asi como de analisis de caracteres binomiales y categoricos. Finalmente, se incluye un estudio de caso de evaluacion y seleccion en un programa de mejoramiento genetico de teca en Costa Rica.

Making Charcoal and Biochar is written with the interested amateur in mind, with the certainty that anyone who has a go at making charcoal will soon get the bug. Before you know it, you will be upgrading to a shiny new retort and there will be no looking back! This book gives a wide range of possibilities for making charcoal on a small scale and for commercial production. There are chapters on the heritage skills of earth burns, the enduring popularity of metal kilns and the future represented by the charcoal retort. Biochar - or small particle charcoal - has been heralded as an ancient but rediscovered super substance that can increase soil fertility and productivity whilst locking up carbon into the ground. This book looks at the ongoing discussion and weighs up the evidence. It concludes with a celebration of the myriad ways in which charcoal can be put to use. Covering the essentials for starting a business such as legislation and marketing, there are also chapters on why charcoal is in the ascendency from the ubiquitious barbecue to the most recent research into biochar and carbon sequestration. Fully illustrated with 195 colour photographs.

Trees have held an important place in mans way of life since he has been on the earth. Trees provided early man with weapons to defend himself and helped provide him with food, shelter and fuel.Trees have played an important role in the history of the United States. Timber was our nations first export. The forest also provided our forefathers with their homes, farm implements, rifle stocks and wagons. The forest, by furnishing ties and utility poles, made possible the expansion of railroad systems, electric power and telephone networks. Every industry depends upon forest products in one way or another.Trees are more important today than ever before. More than 10,000 products are reportedly made from trees. Through chemistry, the humble woodpile is yielding chemicals, plastics and fabrics that were beyond comprehension when an axe first felled a Texas tree.The American standard of living depends to no small extent on the care with which we use our forest resource. Fortunately, trees are a renewable resource. They can be grown as a crop and harvested in such a way that the stand is kept productive, and a steady supply of forest products is assured...

Este libro ha sido escrito pensando en un público lector con la formación de un estudiante de licenciatura o postgrado en áreas afines tales como biología,ecología y manejo, ingeniería ambiental, etcetera. Tambien esta pensado como un material auxiliar para aquellos profesionales que en su campo de accion esten los proyectos de restauracion y los investigadores que deseen iniciarse en esta desafiante y compleja area de las ciencias naturales, cada vez mas pertinente frente al drama mundial de la degradacion ambiental.

This comprehensive study, with a foreword by Lord Killanin, looks at Irish forestry from the migration of the first wood species some 10,000 years ago to the present day. Part One, The Historical Background, examines the primeval forest and early settlers, woodlands, land title and tenure under the Celts, codified with Brehon law; Norman forest law imposed in the early medieval period; the Tudor conquest and plantations; and the development of estate and scientific forestry during the eighteenth and nineteenth centuries. It also considers the political dimension of Irish forestry, and socio-economic factors such as land hunger and agrarian reform. Part Two, Forestry in Modern Ireland, chronicles the twentieth century, beginning with the Irish Forestry Committee of 1907. In the struggle for independence, replenishing the countrys forestry stock was placed high on the list of national objectives. State afforestation schemes laid foundations gradually built upon during the mid-century as the techniques and role of forestry were debated, policies defined and planting programmes instituted. With Coillte established in 1989 and EC-aided expansion plans for the 1990s, private and state interests converge in a major national enterprise. The husbanding of Irelands natural resources and its documentation are now part of a broader environmental awareness. Forests are of inestimable importance. They provide and protect. They sustain the biosphere, regulate climate, nurture diversity, serve recreation, and yield wood: a commodity which contributes more than any other to society, as fuel, as industrial timber and in the form of paper the key medium of civilization. A History of Irish Forestry will be of interest to all concerned with Irelands past, and future.