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Author: Daniel Alberto Lerma Arias Publisher: ISBN: Category : Languages : es Pages :
Book Description
Resumen: Ante las bajas coberturas de acueducto y alcantarillado en la zona rural de Colombia y los altos costos de implementación de sistemas de potabilización y distribución convencionales es importante evaluar la viabilidad técnica y económica de sistemas alternativos de tratamiento de agua potable al alcance de comunidades rurales y de bajos recursos; por tanto se analiza una tecnología alternativa que aun no ha sido probada en Colombia como son los filtros cerámicos impregnados con plata coloidal, los cuales se probaron con 4 diferentes grados de contaminación sobre una fuente de montaña, río Otún, que ofrece la alternativa de evaluar, con agua de la zona, la efectividad de los filtros, donde se encontró que la filtración remueve factores contaminantes tales como turbiedad, color aparente, sólidos totales disueltos y nitritos hasta valores aceptables por normatividad colombiana y no afecta el pH, asimismo, remueve coliformes totales y fecales entre 3 y 4 log, y refuerza el proceso de desinfección gracias a la plata coloidal que remueve coliformes totales y fecales entre 4 y 5 log, de tal forma que comprobada la viabilidad técnica, se encontró que son viables económicamente, al tener costo inicial de producción US$ 11, produciendo agua a razón de 587 $/m3.
Author: Daniel Alberto Lerma Arias Publisher: ISBN: Category : Languages : es Pages :
Book Description
Resumen: Ante las bajas coberturas de acueducto y alcantarillado en la zona rural de Colombia y los altos costos de implementación de sistemas de potabilización y distribución convencionales es importante evaluar la viabilidad técnica y económica de sistemas alternativos de tratamiento de agua potable al alcance de comunidades rurales y de bajos recursos; por tanto se analiza una tecnología alternativa que aun no ha sido probada en Colombia como son los filtros cerámicos impregnados con plata coloidal, los cuales se probaron con 4 diferentes grados de contaminación sobre una fuente de montaña, río Otún, que ofrece la alternativa de evaluar, con agua de la zona, la efectividad de los filtros, donde se encontró que la filtración remueve factores contaminantes tales como turbiedad, color aparente, sólidos totales disueltos y nitritos hasta valores aceptables por normatividad colombiana y no afecta el pH, asimismo, remueve coliformes totales y fecales entre 3 y 4 log, y refuerza el proceso de desinfección gracias a la plata coloidal que remueve coliformes totales y fecales entre 4 y 5 log, de tal forma que comprobada la viabilidad técnica, se encontró que son viables económicamente, al tener costo inicial de producción US$ 11, produciendo agua a razón de 587 $/m3.
Author: Benito Pérez Galdós Publisher: Cambridge Scholars Publishing ISBN: 144380777X Category : Fiction Languages : en Pages : 403
Book Description
Benito Pérez Galdós, considered Spain’s most important novelist after Cervantes, wrote 77 novels, several works of theater and a number of other tomes during his lifetime (1843–1920). His works have been translated into all major languages of the world, and many of his most highly regarded novels, those of the contemporary period, have been translated into English two, three and even four times over. Of the few “contemporary novels” of Galdós that until now have not come to light in English, The Forbidden is certainly among the most noteworthy. The story line concerns a wealthy philanderer, José María Bueno de Guzmán, who attempts to buy the favors of his three beautiful married cousins. He is successful with the first, Eloísa, a grasping materialist who falls deeply in love with him. Then he rejects her in order to attempt to seduce the youngest, Camila. Meanwhile, the third, the pseudo-intellectual María Juana, jealous, seduces José María. But it is Camila, healthy, impetuous and wild, who resists his temptations and holds our attention. The novelist and critic Leopoldo Alas, Galdós’s contemporary, calls her “the most feminine, graceful, lively female character that any modern novelist has painted.” As a naturalistic study, in the manner of Balzac in particular, principal characters of Galdós’s other novels (El doctor Centeno, La de Bringas, La familia de León Roch) become fleetingly visible in The Forbidden. In addition, the entire Bueno de Guzmán family gives evidence of the naturalistic emphasis on heredity: they all display certain physical or mental disorders. Eloísa has a morbid fear of feathers, María Juana often feels that she has a tiny piece of cloth caught in her teeth, José María suffers bouts of depression, an uncle is a kleptomaniac, one of the relatives writes letters to himself, etc. At the same time, this novel shows the foibles of Spanish society where status is determined by one’s associates, by the wearing of finery, and by living on borrowed money. In their history of Spanish literature, Chandler and Schwartz call Galdós “the greatest novelist of the nineteenth century and the only one who deserves to be mentioned in the same breath with great novelists like Balzac, Dickens and Dostoievsky.” The Forbidden, written at the height of the author’s creative powers, is a major work and its publication for an English-speaking audience is long overdue.
Author: Commission for Environmental Cooperation (Montréal, Québec). Secretariat Publisher: ISBN: Category : Agriculture Languages : en Pages : 240
Book Description
The North American Mosaic has four overarching features. First, it is, to the extent feasible, based on comparable information on the status and trends of major indicators of the state of the environment in Canada,Mexico, and the United States. Second, the report confirms that these three countries together make up an incredibly complex, dynamic, and interconnected ecosystem in which humans play a dominant and decisive role. Third, the report raises important and sometimes disquieting questions concerning the sustainability of some current trends. Finally, the report is a reminder that our economic, social, and physical well-being are utterly dependent on the life-sustaining services provided by nature. This report emphasizes the importance of developing mutually compatible economic, social, and environmental goals and policies across the three-country region.
Author: Publisher: ISBN: 9781622701070 Category : Languages : en Pages :
Book Description
The Cal/OSHA Pocket Guide for the Construction Industry is a handy guide for workers, employers, supervisors, and safety personnel. This latest 2011 edition is a quick field reference that summarizes selected safety standards from the California Code of Regulations. The major subject headings are alphabetized and cross-referenced within the text, and it has a detailed index. Spiral bound, 8.5 x 5.5"
Author: Pedro Arezes Publisher: CRC Press ISBN: 1138000477 Category : Technology & Engineering Languages : en Pages : 648
Book Description
Occupational Safety and Hygiene presents selected papers from the International Symposium on Occupational Safety and Hygiene – SHO2013 (Guimarães, Portugal, 14-15 February 2013), which was organized by the Portuguese Society for Occupational Safety and Hygiene (SPOSHO). The contributions from 15 different countries focus on: - Occupational safety - Risk assessment - Safety management - Ergonomics - Management systems - Environmental ergonomics - Physical environments - Construction safety - Human factors The papers included in the book are mainly based on research carried out at universities and other research institutions, but they are also based on practical studies developed by Occupational Health & Safety (OHS) practitioners within their companies. As a result, this book will be useful to get acquainted with the state-of-the-art of the research within the aforementioned domains, as well as with some practical tools and approaches that are currently used by OHS professionals worldwide.
Author: William McDonough Publisher: North Point Press ISBN: 1429973846 Category : Nature Languages : en Pages : 207
Book Description
A manifesto for a radically different philosophy and practice of manufacture and environmentalism "Reduce, reuse, recycle" urge environmentalists; in other words, do more with less in order to minimize damage. But as this provocative, visionary book argues, this approach perpetuates a one-way, "cradle to grave" manufacturing model that dates to the Industrial Revolution and casts off as much as 90 percent of the materials it uses as waste, much of it toxic. Why not challenge the notion that human industry must inevitably damage the natural world? In fact, why not take nature itself as our model? A tree produces thousands of blossoms in order to create another tree, yet we do not consider its abundance wasteful but safe, beautiful, and highly effective; hence, "waste equals food" is the first principle the book sets forth. Products might be designed so that, after their useful life, they provide nourishment for something new-either as "biological nutrients" that safely re-enter the environment or as "technical nutrients" that circulate within closed-loop industrial cycles, without being "downcycled" into low-grade uses (as most "recyclables" now are). Elaborating their principles from experience (re)designing everything from carpeting to corporate campuses, William McDonough and Michael Braungart make an exciting and viable case for change.
Author: Enrique García Vargas Publisher: Archaeopress Publishing Ltd ISBN: 1789692970 Category : Social Science Languages : en Pages : 430
Book Description
Based on the proceedings of a workshop held at Seville University in 2015, this book looks at several series of amphorae created in the Late Republican Roman period, sharing a generally ovoid shape in their bodies – a group of material which, until now, has rarely been studied.
Author: David M. Robbins Publisher: IWA Publishing ISBN: 178040476X Category : Science Languages : en Pages : 148
Book Description
This is a practical handbook providing a step-by-step approach to the techniques used for characterizing wastewater sources and investigating sites where collection, treatment and reuse/disposal technologies will be installed. It is intended to help enable local implementation of on-site and decentralized wastewater management system (DWMS)for wide scale use in development settings. How to Design Wastewater Systems for Local Conditions in Developing Countries helps local service providers and regulatory officials make informed decisions through the use of tools, checklists and case studies. It includes a link to a web based community of on-site and decentralized wastewater professionals, which contains related tools and case studies. This handbook serves as a reference for training classes, certification programs, and higher education programs in civil and sanitary engineering. There is an increasing interest on the part of local government officials and private sector service providers to implement wastewater treatment systems to solve sanitation problems. The model presented in this handbook promotes activities that first generate data related to source and site conditions that represent critical inputs, and then applies this information to the technology selection process. Matching the most appropriate technologies to the specific needs of the wastewater project is the key that leads to long term sustainability. How to Design Wastewater Systems for Local Conditions in Developing Countries is an invaluable resource for public sector decision makers and private sector service providers in developing countries. It is also a useful text for students at engineering colleges in developing countries interested in taking a class that teaches the methods of decentralized wastewater management system (DWMS) development.
Author: James Gleick Publisher: Vintage ISBN: 0307379574 Category : Science Languages : en Pages : 400
Book Description
From the bestselling author of the acclaimed Chaos and Genius comes a thoughtful and provocative exploration of the big ideas of the modern era: Information, communication, and information theory. Acclaimed science writer James Gleick presents an eye-opening vision of how our relationship to information has transformed the very nature of human consciousness. A fascinating intellectual journey through the history of communication and information, from the language of Africa’s talking drums to the invention of written alphabets; from the electronic transmission of code to the origins of information theory, into the new information age and the current deluge of news, tweets, images, and blogs. Along the way, Gleick profiles key innovators, including Charles Babbage, Ada Lovelace, Samuel Morse, and Claude Shannon, and reveals how our understanding of information is transforming not only how we look at the world, but how we live. A New York Times Notable Book A Los Angeles Times and Cleveland Plain Dealer Best Book of the Year Winner of the PEN/E. O. Wilson Literary Science Writing Award
Author: Daniel Alberto Lerma Arias
Author: Daniel Alberto Lerma Arias
Author: Elizabeth Tilley
Author: Benito Pérez Galdós
Author: Commission for Environmental Cooperation (Montréal, Québec). Secretariat
Author: 
Author: Pedro Arezes
Author: William McDonough
Author: Enrique García Vargas
Author: David M. Robbins
Author: James Gleick