http://dspace.utalca.cl/handle/1950/1827 Search the Channel search http://dspace.utalca.cl/simple-search http://dspace.utalca.cl/handle/1950/3742 Title: Informe país: estado del medio ambiente en Chile 2005<br/><br/>Authors: Universidad de Chile, Centro de Analisis de Politicas Publicas, Programa de Desarrollo Sustentable<br/><br/>Description: Tambien disponible en: http://www.inap.uchile.cl/politicaspublicas/informepais2006.pdf Thu, 09 Aug 2007 18:06:48 GMT http://dspace.utalca.cl/handle/1950/3741 Title: Informe país: estado del medio ambiente en Chile 1999.<br/><br/>Authors: Universidad de Chile, Centro de Analisis de Politicas Publicas, Programa de Desarrollo Sustentable<br/><br/>Abstract: El Informe País: Estado del Medio Ambiente en Chile fue encargado por CONAMA a la Universidad de Chile con el fin de informar al país respecto de lo realizado y sobre el estado actual y las perspectivas de la situación ambiental en Chile, presentando un informe de carácter independiente que sirviera como documento de análisis para la labor del Consejo de Desarrollo Sustentable.Este informe a su vez fue encargado por la Universidad de Chile al Centro de Análisis de Políticas Públicas, organismo dependiente de Rectoría, que convocó a destacados especialistas del país para formar parte de un Comité de Expertos en Medio Ambiente y coordinó el trabajo de un grupo de destacados investigadores de diversas universidades. Los ocho temas específicos seleccionados para este informe fueron:Aire - Recursos Hídricos - Bosques - Diversidad Biológica - Suelos - Areas Marinas y Borde Costero - Recursos Mineros - Asentamientos Humanos<br/><br/>Description: Disponibe en: http://mazinger.sisib.uchile.cl/repositorio/lb/ciencias_agronomicas/u2002418137informepaiscompleto.pdf Thu, 09 Aug 2007 18:00:25 GMT http://dspace.utalca.cl/handle/1950/2429 Title: Chemical Periodic Table<br/><br/>Authors: chemicool.com<br/><br/>Abstract: Periodic Table first discovered in 1869 by Dmitry I. Mendeleyev is a way of presenting all the elements so as to show their similarities and differences. The elements are arranged in increasing order of atomic number(Z) as you go from left to right accross the table. The horizontal rows a called periods and the vertical rows, groups.A noble gas is found at the right hand side of each period. There is a progression from metals to non-metals across each period. Elements found in groups (e.g. alkali, halogens) have a similar electronic configuration. The number of electrons in outer shell is the same as the number of the group (e.g. lithium 2·1).The block of elements between groups II and III are called transition metals. These are similar in many ways; they produce colored compounds, have variable valency and are often used as catalysts. Elements 58 to 71 are known as lanthanide or rare earth elements. These elements are found on earth in only very small amounts.Elements 90 to 103 are known as the actinide elements. They include most of the will known elements which are found in nuclear reactions. The elements with larger atomic numbers than 92 do not occur naturally. They have all been produced artificially by bombarding other elements with particles. Wed, 21 Jun 2006 22:25:47 GMT http://dspace.utalca.cl/handle/1950/2072 Title: Harvesting Systems and Equipment in British Columbia<br/><br/>Authors: MacDonald, Jack (ed)<br/><br/>Abstract: This handbook describes the various types of equipment and systems used for harvesting timber in British Columbia. Falling, primary transport (ground, cable, and aerial), processing, and loading phases are described in terms of common and distinguishing features and their relationship to operational and environmental considerations. The handbook also discusses the effects of operating techniques, site characteristics, and external requirements from the same operational and environmental perspectives. Primary operating conditions for the various machine types are outlined in summary tables. A series of flowcharts based on a risk-analysis system is used to rank the probability of conducting successful operations with different equipment on various sites<br/><br/>Description: Libro Digital Mon, 13 Mar 2006 21:54:04 GMT