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Author: Henry Arturo Bastidas Mora Publisher: Editorial Academica Espanola ISBN: 9783659072482 Category : Languages : es Pages : 92
Book Description
El desarrollo e implementacion de sistemas PLC/BPL (Power Line Communications- Broadband Power Line ) requiere un conocimiento detallado de las propiedades del canal electrico. Este libro trata con detalle lo referente a los parametros primarios de las lineas de transmision y distribucion: inductancia, capacitancia, conductancia y resistencia y tambien a los parametros secundarios de las lineas de transmision y distribucion: impedancia caracteristica, y constante de propagacion y de esta ultima su componente real es decir la atenuacion. Se verifican las diferentes topologias y la estructura de los sistemas electricos de potencia tanto para lineas de alto voltaje como para lineas de baja y media tension y su comportamiento a altas frecuencias. El analisis y calculos aqui presentados deben ayudar a clarificar sobre los principios fisicos de las lineas de energia electrica y su comportamiento a frecuencias altas para uso en comunicaciones, y se espera resulte muy util para los profesionales en los campos de las ingenierias electrica, de telecomunicaciones y ramas afines."
Author: Henry Arturo Bastidas Mora Publisher: Editorial Academica Espanola ISBN: 9783659072482 Category : Languages : es Pages : 92
Book Description
El desarrollo e implementacion de sistemas PLC/BPL (Power Line Communications- Broadband Power Line ) requiere un conocimiento detallado de las propiedades del canal electrico. Este libro trata con detalle lo referente a los parametros primarios de las lineas de transmision y distribucion: inductancia, capacitancia, conductancia y resistencia y tambien a los parametros secundarios de las lineas de transmision y distribucion: impedancia caracteristica, y constante de propagacion y de esta ultima su componente real es decir la atenuacion. Se verifican las diferentes topologias y la estructura de los sistemas electricos de potencia tanto para lineas de alto voltaje como para lineas de baja y media tension y su comportamiento a altas frecuencias. El analisis y calculos aqui presentados deben ayudar a clarificar sobre los principios fisicos de las lineas de energia electrica y su comportamiento a frecuencias altas para uso en comunicaciones, y se espera resulte muy util para los profesionales en los campos de las ingenierias electrica, de telecomunicaciones y ramas afines."
Author: Oran R. Young Publisher: Cornell University Press ISBN: 1501711393 Category : Political Science Languages : en Pages : 239
Book Description
How can the global environment be safeguarded in the absence of a world government? In the vanguard of efforts to address this critical question, Oran R. Young draws on environmental issues to explore the nature of international governance. Young's analysis invokes the distinction between "governance," a social function involving the management of interdependent individuals or groups, and "government," a set of formal organizations that makes and enforces rules.
Author: IAEA Publisher: International Atomic Energy Agency ISBN: 9201055226 Category : Technology & Engineering Languages : en Pages : 221
Book Description
Member States intending to introduce a nuclear power programme will need to pass through several phases during the implementation. Experience shows that careful planning of the objectives, roles, responsibilities, interfaces and tasks to be carried out in different phases of a nuclear project is important for success. This publication presents a harmonized approach that may be used to structure the owner/operator management system and establish and manage nuclear projects and their development activities irrespective of the adopted approach. It has been developed from shared management practices and consolidated experiences provided by nuclear project management specialists through a series of workshops and working groups organized by the IAEA. The resultant publication presents a useful framework for the management of nuclear projects from initiation to closeout and captures international best practices.
Author: S. Shoji Publisher: Elsevier ISBN: 0080869890 Category : Science Languages : en Pages : 313
Book Description
Volcanic eruptions are generally viewed as agents of destruction, yet they provide the parent materials from which some of the most productive soils in the world are formed. The high productivity results from a combination of unique physical, chemical and mineralogical properties. The importance and uniqueness of volcanic ash soils are exemplified by the recent establishment of the Andisol soil order in Soil Taxonomy. This book provides the first comprehensive synthesis of all aspects of volcanic ash soils in a single volume. It contains in-depth coverage of important topics including terminology, morphology, genesis, classification, mineralogy, chemistry, physical properties, productivity and utilization. A wealth of data (37 tables, 81 figures, and Appendix) mainly from the Tohoku University Andisol Data Base is used to illustrate major concepts. Twelve color plates provide a valuable visual-aid and complement the text description of the world-wide distribution for volcanic ash soils.This volume will serve as a valuable reference for soil scientists, plant scientists, ecologists and geochemists interested in biogeochemical processes occurring in soils derived form volcanic ejecta.
Author: Michael Bitz Publisher: Harvard Education Press ISBN: 1612500137 Category : Education Languages : en Pages : 254
Book Description
Based on a four-year study, Manga High explores the convergence of literacy, creativity, social development, and personal identity in one of New York City’s largest high schools. Since 2004, students at Martin Luther King, Jr., High School in Manhattan have been creating manga—Japanese comic books. They write the stories, design the characters, and publish their works in print and on the Internet. These students—African-American and Latino teenagers—are more than interested in the art and medium of manga. They have become completely engrossed in Japanese language, culture, and society. Manga High is highlighted by reproductions and content analysis of students’ original art and writing. An appendix includes guidelines for educators on starting a comic book club.
Author: Francois Buscot Publisher: Springer Science & Business Media ISBN: 3540266097 Category : Nature Languages : en Pages : 426
Book Description
For this third volume of the series Soil Biology, internationally renowned scientists shed light on the significant roles of microbes in soil. Key topics covered include: bioerosion, humification, mineralization and soil aggregation; Interactions in the mycorrhizosphere; microbes and plant nutrient cycling; Microbes in soil surface or toxic metal polluted soils; Use of marker genes and isotopes in soil microbiology, and many more.
Author: J.J. Adu-Gyamfi Publisher: Springer Science & Business Media ISBN: 940171570X Category : Science Languages : en Pages : 333
Book Description
Ultimate success in exploiting the genetic capabilities of plants to grow in nutrient-stressed environments of the semi-arid tropics (SAT) requires a holistic view of food systems to ensure that genetic selections for improved yields on nutrient-poor soils will actually be adopted by farmers. This book sets out to address the important issue of how physiological mechanisms of nutrient uptake can best be combined with genetic options to improve the adaptation of crops to low-nutrient availability, thereby enhancing productivity of nutrient poor soils in the semi-arid tropics. The book examines (i) the sustainability of breeding for low-nutrient environments from the viewpoint of three interrelated disciplines; physiology, breeding, and socio-economics, (ii) candidate mechanisms and physiological traits to enhance uptake and utilization efficiencies, (iii) genetic approaches for manipulation of crop plants to enhance root exudation and access nutrients in the rhizosphere, and (iv) field practices and farmers' preferences for crop varieties grown in low-nutrient environments. Finally, the role of modelling in improving nutrient efficiency in cropping systems, recommendations for future research needs and strategies were highlighted. Attended by 50 international participants, this book is the outcome of the workshop held at ICRISAT-India during 27-30 September 1999 to mark the culmination of the Government of Japan/ICRISAT Project.
Author: Robert Garcea Publisher: Springer Science & Business Media ISBN: 0387365230 Category : Medical Languages : en Pages : 435
Book Description
This volume evaluates the carcinogenic risk to humans posed by infection with human papillomaviruses (HPVs). To date, more than 70 HPV types have been identified, of which over 15 have been reported in cervical cancer biopsies. Worldwide, cervical cancer is the second most common cancer in women. This book also considers the possible involvement of HPV infection in cancers at other sites of the human body.
Author: Henry Arturo Bastidas Mora
Author: Henry Arturo Bastidas Mora
Author: Oran R. Young
Author: United States. Bureau of Labor Statistics
Author: IAEA
Author: S. Shoji
Author: Michael Bitz
Author: Susana A. Alaniz-Álvarez
Author: Francois Buscot
Author: J.J. Adu-Gyamfi
Author: Robert Garcea