EVALUACIÓN DE LA CALIDAD DE LAS AGUAS DEL RÍO KATARI, LA PAZ, BOLIVIA, MEDIANTE UN MODELO MATEMÁTICO

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Author :
Publisher : Michael Osina
ISBN 13 :
Total Pages : 195 pages
Book Rating : 4./5 ( download)

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Book Synopsis EVALUACIÓN DE LA CALIDAD DE LAS AGUAS DEL RÍO KATARI, LA PAZ, BOLIVIA, MEDIANTE UN MODELO MATEMÁTICO by :

Download or read book EVALUACIÓN DE LA CALIDAD DE LAS AGUAS DEL RÍO KATARI, LA PAZ, BOLIVIA, MEDIANTE UN MODELO MATEMÁTICO written by and published by Michael Osina. This book was released on 2012-02-13 with total page 195 pages. Available in PDF, EPUB and Kindle. Book excerpt: Actualmente la contaminación hídrica es uno de los problemas ambientales más grandes a nivel mundial, ya que la escasez del agua dulce y la creciente contaminación de ésta, están haciendo que su uso sea cada vez más dificultoso. Bolivia no es ajena a esta problemática y los casos de contaminación en los cuerpos naturales de agua en su territorio, son cada vez más significativos y frecuentes. El establecimiento de objetivos de calidad ha de realizarse teniendo en cuenta tanto la cantidad de contaminante vertido como su comportamiento posterior en el medio en función del tiempo y cómo puede interferir con el resto de sustancias presentes en el medio. En este sentido, se hace necesario utilizar modelos matemáticos de simulación conocidos como "modelos de calidad" o "modelos de transporte de contaminantes” que permitan predecir la evolución a largo plazo del sistema en su conjunto ante una acción determinada. La validez de la predicción vendrá determinada por la capacidad del modelo propuesto de reflejar el comportamiento del sistema. Por ello, es necesario, por una parte, conocer todos los fenómenos que afectan al comportamiento de las distintas sustancias presentes en el sistema y por otra conocer muy bien las características del sistema, de tal forma desde el punto de vista del enfoque sistémico realizar un seccionamiento ambiental representativo. En este trabajo se presenta el estudio de la calidad del agua del Río Katari el cual comprende la confluencia del Río Pallina y Río Colorado hasta la descarga a la Bahía de Cohana utilizando modelos matemáticos. En la segmentación ambiental se considero cuatro tramos divididos por cinco puntos de muestreo a lo largo de la corriente. Se utilizaron como datos de entrada a los modelos: demanda biológica de oxigeno (DBO5), oxigeno disuelto (OD), temperatura (T), altitud sobre nivel del mar, velocidad del río (V), caudal (Q), profundidad (H), ancho del río (W), área transversal (A), constante de desoxigenación (K1), constante de reaireación (K2), longitud de cada tramo (L). También se considero en el análisis de calidad de agua parámetros como el pH, conductividad eléctrica (CE), Concentración de saturación de oxigeno disuelto (Cs). Previamente se realizo varias precampañas para conocer las características del lugar de estudio, para posteriormente realizar la segmentación ambiental requerida por los modelos y georeferenciar los puntos de muestreo para luego poder utilizarlos como referencia en futuras campañas de muestreo. Se realizaron tres campañas de muestreo en época seca el 2010 y una en época de lluvia el 2011, también se utilizo datos de cinco campañas anteriores realizadas por el Instituto Boliviano de Ciencia y Tecnología Nuclear (IBTEN) y Servicio Nacional de Meteorología e Hidrología (SENAMHI). Se utilizaron tres modelos computacionales RIOSep, WASP 7.4 y SIMOD. Se preparo la información obtenida en las campañas de muestreo para introducir a los modelos y proceder a la calibración. Se calibraron con 5 campañas y se validaron con 4 campañas. El modelo RIOSep y WASP 7.4 no tienen la opción de calcular la K1, por lo cual se determino a partir de la ecuación de Chapra y la correlación a partir de los datos obtenidos por el modelo SIMOD entre la K2 y K1. Una vez ya calibrado y validado los modelos, se realizo la evaluación estadística de los modelos y se verifico que el WASP 7.4 no calibro, debido a que requiere excesiva cantidad y calidad de información de entrada, eso lo convierte en un modelo poco aplicable en nuestro medio, debido a la carencia de información existente para nuestros ríos. Sin embargo el modelo RIOSep y SIMOD calibraron muy bien. Se concluyo que el modelo SIMOD es el más óptimo para realizar el estudio de la calidad del agua debido a que tuvo menor porcentaje de error, coeficiente de correlación más cercano a 1 y una diferencia promedio cercana a cero mostrando mejor correlación de los valores analizados que le modelo RIOSep, además su fácil manejo, poca información de entrada y el cálculo de la K1, el cual ahorra tiempo y dinero. Finalmente se realizo los escenarios de predicción con el modelo que mejores resultados presento en términos de calibración, validación y análisis de sensibilidad siendo este el modelo SIMOD. Como resultados de los escenarios de predicción se tiene: - Todas las ampliaciones y mejoras que vayan efectuarse en la PTAR Puchukollo no alcanzarán a ser suficientes para resolver la contaminación de la Bahía de Cohana, si no se hace paralelamente la debida recolección de las aguas residuales restantes de El Alto, Viacha y Laja en sus correspondientes tratamientos. - La mejor solución en cuanto a tratamiento de descargas es la implementación de un tratamiento secundario para Viacha, Laja y El Alto ya que cumpliría con lo estipulado por el Reglamento en Materia de Contaminación Hídrica y además no son muy costosos. - Si existiese mayor descarga de contaminantes de la ciudad de El Alto, Laja, Viacha, causaría mayor contaminación al Río Katari ya que el río no podría depurarlo de forma natural.

Evaluación de la contaminación hídrica del río Jillusaya

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Author :
Publisher : Ewe Editorial Acad MIA Espa Ola
ISBN 13 : 9783847365693
Total Pages : 144 pages
Book Rating : 4.3/5 (656 download)

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Book Synopsis Evaluación de la contaminación hídrica del río Jillusaya by : Mary Liliana Flores Bustillos

Download or read book Evaluación de la contaminación hídrica del río Jillusaya written by Mary Liliana Flores Bustillos and published by Ewe Editorial Acad MIA Espa Ola. This book was released on 2012-04 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt: El presente trabajo tiene como objetivo evaluar la contaminacion hidrica del rio Jillusaya, en La Paz Bolivia, desde la urbanizacion Coqueni hasta el puente Calacoto con una extension de 7 km aproximadamente, en dos epocas del ano.El primer muestreo se realizo en epoca de lluvias en el mes de febrero, el segundo muestreo se realizo en epoca seca en el mes de agosto, donde se recolectaron 15 muestras por duplicado en cada campana. Se determinaron 26 parametros fisicoquimicos, ademas se realizaron analisis microbiologicos para determinar la calidad de las aguas y asi poder contrastar esta informacion con el Reglamento de la Ley de Medio Ambiente (Ley 1333) El area de estudio se dividio en tres zonas: alta, media, baja debido a la diferencia de actividades en cada una de ellas, los resultados de los analisis nos sirvieron para generar una base de datos que fueron introducidos al SIG, mediante el programa Ilwis, el que nos permitio observar de una mejor manera el comportamiento de ciertos contaminantes a lo largo del curso del rio, la zona que presenta un mayor impacto antropico es la zona media. Estos analisis demuestran que las aguas de este rio no son aptas para consumo humano."

Calidad fisicoquímica del agua.

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Author :
Publisher : Universidad Piloto de Colombia
ISBN 13 : 9588957281
Total Pages : 165 pages
Book Rating : 4.5/5 (889 download)

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Book Synopsis Calidad fisicoquímica del agua. by : Lozano-Rivas, William Antonio

Download or read book Calidad fisicoquímica del agua. written by Lozano-Rivas, William Antonio and published by Universidad Piloto de Colombia. This book was released on 2013-09-10 with total page 165 pages. Available in PDF, EPUB and Kindle. Book excerpt: El presente texto está dirigido especialmente al desarrollo de prácticas de laboratorio de alumnos de pregrado en ingenierías y ciencias ambientales, con el doble propósito de ilustrar los principios químicos fundamentales del análisis de aguas y el de familiarizar a los alumnos con las técnicas empleadas en el laboratorio. Se exponen métodos sencillos que no requieren de equipos especializados, considerando las limitaciones que pueden presentarse en muchos de los laboratorios de las instituciones educativas en Colombia. Es importante resaltar que el autor presenta ecuaciones, modelos y fórmulas inéditas, deducidas a partir de su experiencia práctica y de un prolongado trabajo de investigación en el laboratorio.

Modelo matemático de simulación y control de la calidad del agua para embalses

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Publisher :
ISBN 13 :
Total Pages : 327 pages
Book Rating : 4.:/5 (793 download)

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Book Synopsis Modelo matemático de simulación y control de la calidad del agua para embalses by : Felip Serrahima Viladevall

Download or read book Modelo matemático de simulación y control de la calidad del agua para embalses written by Felip Serrahima Viladevall and published by . This book was released on 1989 with total page 327 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Evaluación de la calidad de las aguas de los ríos de la Plata y Matanza-Riachuelo mediante la utilización de índices de calidad de agua

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Author :
Publisher :
ISBN 13 :
Total Pages : 51 pages
Book Rating : 4.:/5 (799 download)

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Book Synopsis Evaluación de la calidad de las aguas de los ríos de la Plata y Matanza-Riachuelo mediante la utilización de índices de calidad de agua by : Argentina. Secretaría de Vivienda y Ordenamiento Ambiental

Download or read book Evaluación de la calidad de las aguas de los ríos de la Plata y Matanza-Riachuelo mediante la utilización de índices de calidad de agua written by Argentina. Secretaría de Vivienda y Ordenamiento Ambiental and published by . This book was released on 1984 with total page 51 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Simulación mediante modelos matemáticos de calidad del agua de los embalses. Aplicación de los modelos MITWQM y PC-QUAL-R1 a los embalses de Cernadilla y Valparaiso (Zamora)

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Author :
Publisher :
ISBN 13 :
Total Pages : 612 pages
Book Rating : 4.:/5 (87 download)

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Book Synopsis Simulación mediante modelos matemáticos de calidad del agua de los embalses. Aplicación de los modelos MITWQM y PC-QUAL-R1 a los embalses de Cernadilla y Valparaiso (Zamora) by : Joan Carles Fernández i Vallés

Download or read book Simulación mediante modelos matemáticos de calidad del agua de los embalses. Aplicación de los modelos MITWQM y PC-QUAL-R1 a los embalses de Cernadilla y Valparaiso (Zamora) written by Joan Carles Fernández i Vallés and published by . This book was released on 1993 with total page 612 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Natural Arsenic in Groundwaters of Latin America

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Author :
Publisher : CRC Press
ISBN 13 : 0415407710
Total Pages : 784 pages
Book Rating : 4.4/5 (154 download)

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Book Synopsis Natural Arsenic in Groundwaters of Latin America by : Jochen Bundschuh

Download or read book Natural Arsenic in Groundwaters of Latin America written by Jochen Bundschuh and published by CRC Press. This book was released on 2008-09-23 with total page 784 pages. Available in PDF, EPUB and Kindle. Book excerpt: Groundwater resources naturally contain high levels of arsenic in many parts of the world. Over the last two decades, the As-containing groundwater in South-East Asia has received much attention, but the situation is just as crucial in Latin America, where the number of studies is still relatively low, and the extent and severity of As-exposure in the populations has yet to be fully evaluated. This book aims to promote knowledge of the occurrence and genesis of As-rich groundwater in Latin America. It deals with constraints on the mobility of As in groundwater, As-uptake from soil and water by plants, As-propagation through the food chain, human health impacts, and As-removal technologies. Case studies are presented from Argentina, Bolivia, Chile, Ecuador, El Salvador, Mexico, Nicaragua and Peru, amongst others, and are viewed against the background of experience from other world regions. The book is a state-of-art overview of arsenic research in Latin America. It aims to create interest within the Latin American countries affected by the presence of arseniferous aquifers and to increase awareness among administrators, policy makers and company executives. It will also serve to inform the international scientific community, and improve international cooperation on arsenic in groundwater.

Practising Feminist Political Ecologies

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Publisher : Zed Books Ltd.
ISBN 13 : 178360090X
Total Pages : 368 pages
Book Rating : 4.7/5 (836 download)

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Book Synopsis Practising Feminist Political Ecologies by : Wendy Harcourt

Download or read book Practising Feminist Political Ecologies written by Wendy Harcourt and published by Zed Books Ltd.. This book was released on 2015-05-14 with total page 368 pages. Available in PDF, EPUB and Kindle. Book excerpt: Destined to transform its field, this volume features some of the most exciting feminist scholars and activists working within feminist political ecology, including Giovanna Di Chiro, Dianne Rocheleau, Catherine Walsh and Christa Wichterich. Offering a collective critique of the ‘green economy’, it features the latest analyses of the post-Rio+20 debates alongside a nuanced reading of the impact of the current ecological and economic crises on women as well as their communities and ecologies. This new, politically timely and engaging text puts feminist political ecology back on the map.

Cholas and Pishtacos

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Publisher : University of Chicago Press
ISBN 13 : 0226891542
Total Pages : 377 pages
Book Rating : 4.2/5 (268 download)

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Book Synopsis Cholas and Pishtacos by : Mary Weismantel

Download or read book Cholas and Pishtacos written by Mary Weismantel and published by University of Chicago Press. This book was released on 2001-12-15 with total page 377 pages. Available in PDF, EPUB and Kindle. Book excerpt: Winner of the 2003 Senior Book Prize from the American Ethnological Society. Cholas and Pishtacos are two provocative characters from South American popular culture—a sensual mixed-race woman and a horrifying white killerwho show up in everything from horror stories and dirty jokes to romantic novels and travel posters. In this elegantly written book, these two figures become vehicles for an exploration of race, sex, and violence that pulls the reader into the vivid landscapes and lively cities of the Andes. Weismantel's theory of race and sex begins not with individual identity but with three forms of social and economic interaction: estrangement, exchange, and accumulation. She maps the barriers that separate white and Indian, male and female-barriers that exist not in order to prevent exchange, but rather to exacerbate its inequality. Weismantel weaves together sources ranging from her own fieldwork and the words of potato sellers, hotel maids, and tourists to classic works by photographer Martin Chambi and novelist José María Arguedas. Cholas and Pishtacos is also an enjoyable and informative introduction to a relatively unknown region of the Americas.

The Llobregat

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Publisher : Springer
ISBN 13 : 3642309399
Total Pages : 381 pages
Book Rating : 4.6/5 (423 download)

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Book Synopsis The Llobregat by : Sergi Sabater

Download or read book The Llobregat written by Sergi Sabater and published by Springer. This book was released on 2012-06-02 with total page 381 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Llobregat belongs to the most thoroughly studied rivers in Europe and is a paradigm of the confluence of human and natural disturbances in a single basin. Because of its location in a very densely populated region and its Mediterranean character, the Llobregat supports a mixture of irregular flow, water abstraction, excess nutrients, mining debris, and a wide array of pollutants. The aquatic organisms strive to survive in a dramatically changing river that passes through a succession of dams, weirs and channels. The long-term river monitoring as well as the research that has been carried out in the river for a long time have provided an extensive knowledge of these disturbances and their effects on the biological communities. This book highlights the available information, with emphasis on the hydrological, chemical and biological elements interspersed in the river. Experts in the field discuss the main nutrient patterns and pollutant occurrence and the responses of the biological quality elements as well as the river ecosystem to the overall natural and man-made influences.

Matemax: English + Spanish Edition

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Publisher : American Mathematical Soc.
ISBN 13 : 1470455005
Total Pages : 189 pages
Book Rating : 4.4/5 (74 download)

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Book Synopsis Matemax: English + Spanish Edition by : ALICIA. SABIA DICKENSTEIN (JUAN.)

Download or read book Matemax: English + Spanish Edition written by ALICIA. SABIA DICKENSTEIN (JUAN.) and published by American Mathematical Soc.. This book was released on 2020-07-28 with total page 189 pages. Available in PDF, EPUB and Kindle. Book excerpt: MATEMAX is a bilingual schoolbook of mathematical problems written with the premise that one of the fundamental ways of learning mathematics, in addition to being one of the goals of the subject, is to solve problems. The book is designed for children and young teens and aims to teach mathematics in an entertaining way. Problems are based on familiar everyday situations, and helpful hints guide students to develop strategies before diving into calculations, leading to practice in abstract thinking, an essential feature of mathematics. Presented in both English and Spanish it also provides equal access to students, parents and teachers with facility in either or both languages. An online supplement is available upon request at [email protected]. This companion book provides complete solutions, alternative methods and additional suggestions to complement the short answers contained in the book. In addition, while problems are arranged in the book as they appear naturally in life, the companion text connects the mathematical tools with standard curricula. Here is a sampling of those pages. MATEMAX es un libro escolar bilingüe de problemas matemáticos escrito bajo la premisa de que una de las formas fundamentales de aprender matemática, además de ser uno de los objetivos de la asignatura, es resolver problemas. El libro está diseñado para niños y adolescentes y tiene como objetivo enseñar matemática de una manera entretenida. Los problemas se basan en situaciones cotidianas familiares, y sugerencias útiles guían a los estudiantes para desarrollar estrategias antes de sumergirse en los cálculos, lo que lleva a la práctica del pensamiento abstracto, una característica esencial de la matemática. Presentado tanto en inglés como en español, también proporciona un acceso igual a estudiantes, padres y maestros con facilidad en uno o ambos idiomas. Un suplemento en línea está disponible a pedido en [email protected]. Este libro acompañante proporciona soluciones completas, métodos alternativos y sugerencias adicionales para complementar las respuestas cortas contenidas en el libro. Además, mientras que los problemas están ubicados en el libro como aparecen naturalmente en la vida, el texto complementario conecta las herramientas matemáticas con los planes de estudio estándar. Aquí hay una muestra de esas páginas.

New Perspectives on Environmental Justice

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Publisher : Rutgers University Press
ISBN 13 : 0813534275
Total Pages : 198 pages
Book Rating : 4.8/5 (135 download)

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Book Synopsis New Perspectives on Environmental Justice by : Rachel Stein

Download or read book New Perspectives on Environmental Justice written by Rachel Stein and published by Rutgers University Press. This book was released on 2004 with total page 198 pages. Available in PDF, EPUB and Kindle. Book excerpt: Women make up the vast majority of activists and organizers of grassroots movements fighting against environmental ills that threaten poor and people of color communities. [This] collection of essays ... pays tribute to the ... contributions women have made in these endeavors. The writers offer varied examples of environmental justice issues such as children's environmental-health campaigns, cancer research, AIDS/HIV activism, the Environmental Genome Project, and popular culture, among many others. Each one focuses on gender and sexuality as crucial factors in women's or gay men's activism and applies environmental justice principles to related struggles for sexual justice. Drawing on a wide variety of disciplinary perspectives, the contributors offer multiple vantage points on gender, sexuality, and activism.-Back cover.

Types of Latin American Peasantry

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Publisher :
ISBN 13 :
Total Pages : 24 pages
Book Rating : 4.:/5 (89 download)

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Book Synopsis Types of Latin American Peasantry by : Eric R. Wolf

Download or read book Types of Latin American Peasantry written by Eric R. Wolf and published by . This book was released on 1955 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Beyond the City

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Publisher : University of Texas Press
ISBN 13 : 1477309411
Total Pages : 179 pages
Book Rating : 4.4/5 (773 download)

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Book Synopsis Beyond the City by : Felipe Correa

Download or read book Beyond the City written by Felipe Correa and published by University of Texas Press. This book was released on 2016-06-07 with total page 179 pages. Available in PDF, EPUB and Kindle. Book excerpt: During the last decade, the South American continent has seen a strong push for transnational integration, initiated by the former Brazilian president Fernando Henrique Cardoso, who (with the endorsement of eleven other nations) spearheaded the Initiative for the Integration of Regional Infrastructure in South America (IIRSA), a comprehensive energy, transport, and communications network. The most aggressive transcontinental integration project ever planned for South America, the initiative systematically deploys ten east-west infrastructural corridors, enhancing economic development but raising important questions about the polarizing effect of pitting regional needs against the colossal processes of resource extraction. Providing much-needed historical contextualization to IIRSA’s agenda, Beyond the City ties together a series of spatial models and offers a survey of regional strategies in five case studies of often overlooked sites built outside the traditional South American urban constructs. Implementing the term “resource extraction urbanism,” the architect and urbanist Felipe Correa takes us from Brazil’s nineteenth-century regional capital city of Belo Horizonte to the experimental, circular, “temporary” city of Vila Piloto in Três Lagoas. In Chile, he surveys the mining town of María Elena. In Venezuela, he explores petrochemical encampments at Judibana and El Tablazo, as well as new industrial frontiers at Ciudad Guayana. The result is both a cautionary tale, bringing to light a history of societies that were “inscribed” and administered, and a perceptive examination of the agency of architecture and urban planning in shaping South American lives.

Bamako Sounds

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Publisher : U of Minnesota Press
ISBN 13 : 1452944415
Total Pages : 215 pages
Book Rating : 4.4/5 (529 download)

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Book Synopsis Bamako Sounds by : Ryan Thomas Skinner

Download or read book Bamako Sounds written by Ryan Thomas Skinner and published by U of Minnesota Press. This book was released on 2015-06-01 with total page 215 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bamako Sounds tells the story of an African city, its people, their values, and their music. Centered on the music and musicians of Bamako, Mali’s booming capital city, this book reveals a community of artists whose lives and works evince a complex world shaped by urban culture, postcolonialism, musical expression, religious identity, and intellectual property. Drawing on years of ethnographic research with classically trained players of the kora (a twenty-one-string West African harp) as well as more contemporary, hip-hop influenced musicians and producers, Ryan Thomas Skinner analyzes how Bamako artists balance social imperatives with personal interests and global imaginations. Whether performed live on stage, broadcast on the radio, or shared over the Internet, music is a privileged mode of expression that suffuses Bamako’s urban soundscape. It animates professional projects, communicates cultural values, pronounces public piety, resounds in the marketplace, and quite literally performs the nation. Music, the artists who make it, and the audiences who interpret it thus represent a crucial means of articulating and disseminating the ethics and aesthetics of a varied and vital Afropolitanism, in Bamako and beyond.

Violent Environments

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Publisher : Cornell University Press
ISBN 13 : 9780801487118
Total Pages : 468 pages
Book Rating : 4.4/5 (871 download)

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Book Synopsis Violent Environments by : Nancy Lee Peluso

Download or read book Violent Environments written by Nancy Lee Peluso and published by Cornell University Press. This book was released on 2001 with total page 468 pages. Available in PDF, EPUB and Kindle. Book excerpt: Do environmental problems and processes produce violence? Current U.S. policy about environmental conflict and scholarly work on environmental security assume direct causal links between population growth, resource scarcity, and violence. This belief, a staple of governmental decision-making during both Clinton administrations and widely held in the environmental security field, depends on particular assumptions about the nature of the state, the role of population growth, and the causes of environmental degradation.The conventional understanding of environmental security, and its assumptions about the relation between violence and the environment, are challenged and refuted in Violent Environments. Chapters by geographers, historians, anthropologists, and sociologists include accounts of ethnic war in Indonesia, petro-violence in Nigeria and Ecuador, wildlife conservation in Tanzania, and "friendly fire" at Russia's nuclear weapons sites. Violent Environments portrays violence as a site-specific phenomenon rooted in local histories and societies, yet connected to larger processes of material transformation and power relations. The authors argue that specific resource environments, including tropical forests and oil reserves, and environmental processes (such as deforestation, conservation, or resource abundance) are constituted by and in part constitute the political economy of access to and control over resources. Violent Environments demands new approaches to an international set of complex problems, powerfully arguing for deeper, more ethnographically informed analyses of the circumstances and processes that cause violence.

Pyrethroid Insecticides

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Publisher : Springer Nature
ISBN 13 : 3030556964
Total Pages : 317 pages
Book Rating : 4.0/5 (35 download)

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Book Synopsis Pyrethroid Insecticides by : Ethel Eljarrat

Download or read book Pyrethroid Insecticides written by Ethel Eljarrat and published by Springer Nature. This book was released on 2020-08-04 with total page 317 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book reviews the latest developments concerning the analysis, fate, behaviour and toxicity of pyrethroid insecticides. Over the last few decades, pyrethroid insecticides have increasingly replaced organochlorine pesticides due to their relatively lower mammalian toxicity, selective insecticide activity and lower environmental persistence. They represent 25% of global sales of insecticides, and are considered to be “safe” since they are converted to non-toxic metabolites by oxidative metabolism in fish and by hydrolysis in mammals. However, recent studies have demonstrated their environmental ubiquity, their bioaccumulation and their toxicity in various aquatic and terrestrial organisms, and even in humans. Featuring contributions by leading experts, the book discusses the physico-chemical properties and uses of pyrethroid insecticides; the latest chemical analytical methods; their occurrence in the environment, biota and food; and their isomeric and enantiomeric behaviour. It particularly highlights the toxicological effects and human exposure to pyrethroid insecticides, and also offers insights into the effects of the salmon industry on the marine environment with a case study of sea lice treatment using pyrethroids. This comprehensive book is a valuable source of information for environmental scientists, policymakers and producers interested in issues related to pyrethroid insecticides.