Hydrocarbures aromatiques polycycliques et leurs dérivés nitrés et oxygénés dans l'air ambiant

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Publisher :
ISBN 13 :
Total Pages : 4 pages
Book Rating : 4.:/5 (834 download)

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Book Synopsis Hydrocarbures aromatiques polycycliques et leurs dérivés nitrés et oxygénés dans l'air ambiant by : Alexandre Albinet

Download or read book Hydrocarbures aromatiques polycycliques et leurs dérivés nitrés et oxygénés dans l'air ambiant written by Alexandre Albinet and published by . This book was released on 2006 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt: Several studies on the toxicity of the particles in the ambient air show that the polar phase, which contains the oxygenated and nitrated polycyclic aromatic hydrocarbons (OPAHs and NPAHs), is more toxic than the aromatic fraction containing the PAH. In this context, the objective of this study was to chemically characterize the NPAHs and OPAHs in ambient air on various sites (traffic, urban, suburban, rural and altitude). Samplings were performed within the framework of the French research program POllution des Vallées Alpines (POVA) during the winter 2002-2003 and the summer 2003 and in the area of Marseilles in summer 2004. Both, ambient air particulate and gas phases were sampled and particle size distribution was also studied. The results obtained on the OPAHs and the NPAHs contribute to increase the data base even still limited on these compounds. First, we developed a routine analytical method for the simultaneous quantitative determination of NPAHs and OPAHs in complex environmental matrices, using GC/NICI-MS. Results from the field campaigns show that, OPAH concentration levels were of the same order of magnitude as PAHs while NPAH concentrations were one to two orders of magnitude lower. Carcinogenic risk was estimated using toxic equivalent factors. NPAHs could contribute to 20% of the total risk. Study of source specific ratios clearly showed these compounds have a primary origin at the sites close to the sources of pollution whereas production of secondary NPAHs by gas phase reactions was prevalent at the rural sites far to the direct sources of pollution and initiated by OH (day-time reactions). The study of NPAH and OPAH sources suggested that gasoline engines were an important source of such compounds. The OPAH 9,10-anthraquinone presents a double origin: primary diesel emission and photochemical processes without to be able to discriminate when the formation occurred (before or during the sampling). The fraction of PAHs, OPAHs and NPAHs associated with the particle phase was strongly depending on their vapour pressure and the ambient temperature. Sources of these compounds take a part in their gas/particle partitioning which can bring information on their primary or secondary origin. Finally, during both, the winter and summer period, PAHs, OPAHs and NPAHs were mainly associated (>80%) with fine particles (Dp

Environmental Health Criteria

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Publisher :
ISBN 13 :
Total Pages : 818 pages
Book Rating : 4.:/5 ( download)

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Book Synopsis Environmental Health Criteria by :

Download or read book Environmental Health Criteria written by and published by . This book was released on 1976 with total page 818 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Emerging Micro-pollutants in the Environment

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Publisher : ACS Symposium
ISBN 13 : 9780841230781
Total Pages : 0 pages
Book Rating : 4.2/5 (37 download)

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Book Synopsis Emerging Micro-pollutants in the Environment by : Sudarshan Kurwadkar

Download or read book Emerging Micro-pollutants in the Environment written by Sudarshan Kurwadkar and published by ACS Symposium. This book was released on 2015 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Distributed in print by Oxford University Press."

Antibiotic Resistance in Aquatic Systems

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Publisher : Frontiers Media SA
ISBN 13 : 2889451313
Total Pages : 109 pages
Book Rating : 4.8/5 (894 download)

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Book Synopsis Antibiotic Resistance in Aquatic Systems by : Satoru Suzuki

Download or read book Antibiotic Resistance in Aquatic Systems written by Satoru Suzuki and published by Frontiers Media SA. This book was released on 2017-04-10 with total page 109 pages. Available in PDF, EPUB and Kindle. Book excerpt: Rivers, lakes and the ocean receive antibiotic resistance genes from human environments. The aquatic environments are a huge reservoir and exchange stage of antibiotic resistance genes.

Forest Guardians, Forest Destroyers

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Publisher : University of Washington Press
ISBN 13 : 0295800259
Total Pages : 314 pages
Book Rating : 4.2/5 (958 download)

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Book Synopsis Forest Guardians, Forest Destroyers by : Tim Forsyth

Download or read book Forest Guardians, Forest Destroyers written by Tim Forsyth and published by University of Washington Press. This book was released on 2011-07-01 with total page 314 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this far-reaching examination of environmental problems and politics in northern Thailand, Tim Forsyth and Andrew Walker analyze deforestation, water supply, soil erosion, use of agrochemicals, and biodiversity in order to challenge popularly held notions of environmental crisis. They argue that such crises have been used to support political objectives of state expansion and control in the uplands. They have also been used to justify the alternative directions advocated by an array of NGOs. In official and alternative discourses of economic development, the peoples living in Thailand's hill country are typically cast as either guardians or destroyers of forest resources, often depending on their ethnicity. Political and historical factors have created a simplistic, misleading, and often scientifically inaccurate environmental narrative: Hmong farmers, for example, are thought to exhibit environmentally destructive practices, whereas the Karen are seen as linked to and protective of their ancestral home. Forsyth and Walker reveal a much more complex relationship of hill farmers to the land, to other ethnic groups, and to the state. They conclude that current explanations fail to address the real causes of environmental problems and unnecessarily restrict the livelihoods of local people. The authors' critical assessment of simplistic environmental narratives, as well as their suggestions for finding solutions, will be valuable in international policy discussions about environmental issues in rapidly developing countries. Moreover, their redefinition of northern Thailand's environmental problems, and their analysis of how political influences have reinforced inappropriate policies, demonstrate new ways of analyzing how environmental science and knowledge are important arenas for political control. This book makes valuable contributions to Thai studies and more generally to the fields of environmental science, ecology, geography, anthropology, and political science, as well as to policy making and resource management in the developing world.

Isle of Fire

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Publisher : University of Chicago Press
ISBN 13 : 0226461416
Total Pages : 339 pages
Book Rating : 4.2/5 (264 download)

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Book Synopsis Isle of Fire by : Christian A. Kull

Download or read book Isle of Fire written by Christian A. Kull and published by University of Chicago Press. This book was released on 2004-07-07 with total page 339 pages. Available in PDF, EPUB and Kindle. Book excerpt: Long considered both best friend and worst enemy to humankind, fire is at once creative and destructive. On the endangered tropical island of Madagascar, these two faces of fire have fueled a century-long conflict between rural farmers and island leaders. Based on detailed fieldwork in Malagasy villages and a thorough archival investigation, Isle of Fire offers a detailed analysis of why Madagascar has always been aflame, why it always will be aflame, and ultimately, as Christian Kull argues, why it should remain aflame.

Civilizing the Margins

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Publisher : NUS Press
ISBN 13 : 9789971694180
Total Pages : 308 pages
Book Rating : 4.6/5 (941 download)

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Book Synopsis Civilizing the Margins by : Christopher R. Duncan

Download or read book Civilizing the Margins written by Christopher R. Duncan and published by NUS Press. This book was released on 2008 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt: Discusses the programs, policies, and laws that affect ethnic minorities in eight countries: Burma, Cambodia, Indonesia, Laos, Malaysia, the Philippines, Thailand, and Viet Nam. Once targeted for intervention, people such as the Orang Asli of Malaysia and the "hill tribes" of Thailand often become the subject of programs aimed at radically changing their lifestyles, which the government views as backward or primitive. Several chapters highlight the tragic consequences of forced resettlement, a common result of these programs.

Political Ecology of Tourism

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Publisher : Routledge
ISBN 13 : 1317509358
Total Pages : 347 pages
Book Rating : 4.3/5 (175 download)

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Book Synopsis Political Ecology of Tourism by : Mary Mostafanezhad

Download or read book Political Ecology of Tourism written by Mary Mostafanezhad and published by Routledge. This book was released on 2016-01-08 with total page 347 pages. Available in PDF, EPUB and Kindle. Book excerpt: Why has political ecology been assigned so little attention in tourism studies, despite its broad and critical interrogation of environment and politics? As the first full-length treatment of a political ecology of tourism, the collection addresses this lacuna and calls for the further establishment of this emerging interdisciplinary subfield. Drawing on recent trends in geography, anthropology, and environmental and tourism studies, Political Ecology of Tourism: Communities, Power and the Environment employs a political ecology approach to the analysis of tourism through three interrelated themes: Communities and Power, Conservation and Control, and Development and Conflict. While geographically broad in scope—with chapters that span Central and South America to Africa, and South, Southeast, and East Asia to Europe and Greenland—the collection illustrates how tourism-related environmental challenges are shared across prodigious geographical distances, while also attending to the nuanced ways they materialize in local contexts and therefore demand the historically situated, place-based and multi-scalar approach of political ecology. This collection advances our understanding of the role of political, economic and environmental concerns in tourism practice. It offers readers a political ecology framework from which to address tourism-related issues and themes such as development, identity politics, environmental subjectivities, environmental degradation, land and resources conflict, and indigenous ecologies. Finally, the collection is bookended by a pair of essays from two of the most distinguished scholars working in the subfield: Rosaleen Duffy (foreword) and James Igoe (afterword). This collection will be valuable reading for scholars and practitioners alike who share a critical interest in the intersection of tourism, politics and the environment

Prescribed Burning in California Wildlands Vegetation Management

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Publisher : Univ of California Press
ISBN 13 : 0520354060
Total Pages : 274 pages
Book Rating : 4.5/5 (23 download)

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Book Synopsis Prescribed Burning in California Wildlands Vegetation Management by : Harold Biswell

Download or read book Prescribed Burning in California Wildlands Vegetation Management written by Harold Biswell and published by Univ of California Press. This book was released on 2023-11-10 with total page 274 pages. Available in PDF, EPUB and Kindle. Book excerpt: Harold Biswell's decades of research and field experience were a major factor in developing policies of controlled or prescribed burning, which mimics or reintroduces the natural fire cycle. This comprehensive study introduces the principles and practices of prescribed burning, which apply far beyond California, within a historical and ecological perspective. Available for the first time in paperback, with a new foreword by James Agee, this book places Biswell's study—and his legacy—in the context of recent developments in the field.

Seditious Histories

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Publisher :
ISBN 13 :
Total Pages : 392 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Seditious Histories by : Craig J. Reynolds

Download or read book Seditious Histories written by Craig J. Reynolds and published by . This book was released on 2006 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt: This collection of eleven essays by senior Asianist Craig Reynolds features debates about meaning in Southeast Asian and Thai history. He explores themes that have hitherto been treated superficially in Thai historical writing, including Siam’s semicolonialism in the late nineteenth century, the concepts of militarism and masculinity, collective memory and dynastic succession, the relationship of manual knowledge to ethnoscience, and the dialectics of globalization. Other more familiar topics under Reynolds’s microscope, treated with new material and approaches, include cultural nationalism and religious history.

Surveying and Exploring in Siam

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Publisher : Franklin Classics
ISBN 13 : 9780341945048
Total Pages : 238 pages
Book Rating : 4.9/5 (45 download)

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Book Synopsis Surveying and Exploring in Siam by : James McCarthy

Download or read book Surveying and Exploring in Siam written by James McCarthy and published by Franklin Classics. This book was released on 2018-10-09 with total page 238 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work has been selected by scholars as being culturally important and is part of the knowledge base of civilization as we know it. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. To ensure a quality reading experience, this work has been proofread and republished using a format that seamlessly blends the original graphical elements with text in an easy-to-read typeface. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.