Download or read book Caract risation des compos s organiques volatils dans une zone urbaine multi influenc e written by Joelle Roukos and published by . This book was released on 2010 with total page 215 pages. Available in PDF, EPUB and Kindle. Book excerpt: Les COV oxygénés sont des espèces peu mesurées dans l’air ambiant en raison de difficultés analytiques liées à la présence d’eau dans l’échantillon. Nos connaissances sur les teneurs, les sources et les puits de ces composés restent incomplètes. Afin de caractériser les COV (notamment les COVO) sur la zone littorale multi-influencée de Dunkerque, deux méthodes de mesures complémentaires ont été développées : l’échantillonnage passif (révélant la répartition spatiale des espèces) et l’analyse en mode on-line (informant l’évolution temporelle des teneurs).Deux campagnes de mesures préliminaires réalisées sur la zone d’étude pendant des périodes hivernale et estivale à l’aide des tubes passifs Radiello ont permis d’identifier les COV présents sur la zone d’étude et d’examiner les origines des BTEX mesurés. Concernant la mesure en mode on-line, une méthode chromatographique pour l’analyse de 14 composés oxygénés, 4 nitriles a été développée et validée. Un procédé de réduction de l’humidité avant l’étape de préconcentration a permis d’utiliser une colonne polaire spécifique aux composés oxygénés. Des premières mesures effectuées à Douai et à Dunkerque ont mis en évidence les origines urbaines et industrielles de certains composés. Quant à l’échantillonnage passif, la mesure de 2 composés oxygénés (éthanol acétone) et des BTEX a été développée pour une durée de prélèvement de 8 h. Les caractéristiques métrologiques de l’échantillonneur ont été déterminées : débits d’échantillonnage dans les conditions standard et limites de détection et l’influence des facteurs environnementaux sur l’échantillonnage. Une campagne de mesures à l’aide d’échantillonneurs passifs a ensuite été réalisée pendant un épisode de brise de mer. Des cartographies des COV et de l’ozone ont été établies et ont montré les « points chauds » en COV à proximité des émetteurs industriels et une zone de formation locale d’ozone sur le site d’étude.
Download or read book Caract risation des compos s organiques volatils dans une atmosph re urbaine sous influence industrielle written by Caroline Badol and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Ces travaux ont caractérisé la pollution par les Composés Organiques Volatils d'une atmosphère urbaine sous influence industrielle. Un site récepteur de l'agglomération dunkerquoise a été équipé d'un outil analytique permettant la mesure horaire de 53 COV de septembre 2002 à août 2003. Des profils d'émission des sources de COV influençant ce site ont été établis. L'analyse qualitative des données a mis en évidence plusieurs type de sources: échappements automobiles, évaporation de solvants et carburants, émissions industrielles. Ces dernières sont corrélées à des directions de vent peu fréquentes, qui, lorsqu'elles s'établissent, engendrent de fortes teneurs au site récepteur. L'analyse quantitative des données, basée en partie sur le modèle CMB, a établi que la contribution des sources industrielles aux teneurs ambiantes pour certaines directions de vent atteint plus de 70%. Néanmoins, globalement la contribution des sources urbaines et trafic représente plus de 80%.
Download or read book ICREEC 2019 written by Ahmed Belasri and published by Springer Nature. This book was released on 2020-06-10 with total page 659 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book highlights peer reviewed articles from the 1st International Conference on Renewable Energy and Energy Conversion, ICREEC 2019, held at Oran in Algeria. It presents recent advances, brings together researchers and professionals in the area and presents a platform to exchange ideas and establish opportunities for a sustainable future. Topics covered in this proceedings, but not limited to, are photovoltaic systems, bioenergy, laser and plasma technology, fluid and flow for energy, software for energy and impact of energy on the environment.
Download or read book Faecal Sludge Management written by Linda Strande and published by IWA Publishing. This book was released on 2014-08-15 with total page 428 pages. Available in PDF, EPUB and Kindle. Book excerpt: It is estimated that literally billions of residents in urban and peri-urban areas of Africa, Asia, and Latin America are served by onsite sanitation systems (e.g. various types of latrines and septic tanks). Until recently, the management of faecal sludge from these onsite systems has been grossly neglected, partially as a result of them being considered temporary solutions until sewer-based systems could be implemented. However, the perception of onsite or decentralized sanitation technologies for urban areas is gradually changing, and is increasingly being considered as long-term, sustainable options in urban areas, especially in low- and middle-income countries that lack sewer infrastructures. This is the first book dedicated to faecal sludge management. It compiles the current state of knowledge of the rapidly evolving field of faecal sludge management, and presents an integrated approach that includes technology, management, and planning based on Sandecs 20 years of experience in the field. Faecal Sludge Management: Systems Approach for Implementation and Operation addresses the organization of the entire faecal sludge management service chain, from the collection and transport of sludge, and the current state of knowledge of treatment options, to the final end use or disposal of treated sludge. The book also presents important factors to consider when evaluating and upscaling new treatment technology options. The book is designed for undergraduate and graduate students, and engineers and practitioners in the field who have some basic knowledge of environmental and/or wastewater engineering.
Download or read book Getting Acquainted in Conversation written by Jan Svennevig and published by John Benjamins Publishing. This book was released on 2000-02-15 with total page 398 pages. Available in PDF, EPUB and Kindle. Book excerpt: What makes a ‘getting acquainted’ a recognizable conversational activity, and how are interpersonal relationships established in a first conversation? This book presents a theoretical framework for the study of relationship management in conversation and an empirical study of a corpus of initial interactions. It provides detailed descriptions of the sequential resources unacquainted interlocutors use in order to: – generate self-presentation – introduce topics – establish common contextual resources It is argued that these sequential patterns embody conventionalized procedures for establishing an interpersonal relationship involving some degree of: – solidarity (mutual rights and obligations) – familiarity (mutual knowledge of personal background) – mutual affect (emotional commitment) The sequential analysis is based on a conversation analytic approach, while the interpretive framework consists of pragmatic theories of politeness, conversational style and common ground.
Download or read book Le Pacifique Sud written by Frédéric Angleviel and published by Presses Univ de Bordeaux. This book was released on 1991 with total page 294 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fossil and Recent Biofilms written by Wolfgang Elisabeth Krumbein and published by Springer Science & Business Media. This book was released on 2003-11-30 with total page 520 pages. Available in PDF, EPUB and Kindle. Book excerpt: This textbook on biofilms combines knowledge on sub-aquatic and sub-aerial biofilms and their products (stromatolites, oolites, ore, petroleum and gas deposits). It describes how formation and degradation of minerals and rocks is achieved through biofilm formation on and in sediments, soils and rocks. Methods of study, examples of Precambrian biofilms of an early Earth as well as the most recent examples of desert rock biofilms are treated in this integrative book on biofilms, microbial mats and stromatolites.
Download or read book Travertine written by Allan Pentecost and published by Springer Science & Business Media. This book was released on 2005-07-22 with total page 472 pages. Available in PDF, EPUB and Kindle. Book excerpt: uring the spring of 1960, an uncle showed me a ‘petrifying spring’ near Plaxtol in Kent Dwhere twigs had been encased in a calcareous jacket. A twig was collected and having - cently been given I. Evan’s Observer’s Book of Geology by my parents, I found a photograph of another petrifying spring and an explanation of its origin. In those days, Derbyshire was too far for a holiday destination, and I took little further interest until a research studentship with Professor G. E. Fogg became available in 1971. Tony Fogg had recently moved to the University College of North Wales, Bangor and the research was to be into cyanobacterium mats, with fieldwork along the Red Sea coast. The fieldwork never materialised but my interest in algal mats had been aroused. A chance stroll along the Bangor shore revealed beautifully calcified cya- bacterium mats, and Tony generously allowed me to investigate these instead. The old Plaxtol collection was retrieved and yielded abundant cyanobacteria. It became apparent that here was a wealth of information about a rock whose formation was so rapid, that the process could be studied in days rather than years – an exceptional state of affairs. A search of the literature also revealed that the rock, a form of travertine, had other unusual features.
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."
Download or read book Sustainable Development in Mechanical Engineering written by Sylvie Nadeau and published by Cambridge Scholars Publishing. This book was released on 2020-05-15 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt: Owing to their specialized training, engineers play a crucial role in the design and development of new products or infrastructure as well as the creation of wealth. Consequently, engineers recognize that in the performance of these functions they have a specific responsibility to take such measures as are appropriate to safeguard the environment, health, safety and well-being of the public. This book proposes a series of fifteen practical cases, integrating knowledge from different fields of the mechanical engineering discipline, along with basic knowledge in environment, occupational health and safety risk management. The cases are descriptions of a real system, it’s functioning and it’s instructions for use. The systems selected represent a broad spectrum of mechanical engineering issues or problems: fluid mechanics, thermodynamics, heat transfer, heating, ventilation and cooling, vibrations, dynamics, statics, failure of materials, automatic and mecatronics, hydraulics, product design, human factors, maintenance, rapid prototyping to name a few. The professional objective of the cases proposed is to design or improve the design of the described system. This book is a must to transfer knowledge to future engineers with respect to hazards resulting from their work.
Download or read book Arsenic in Drinking Water written by National Research Council and published by National Academies Press. This book was released on 2001-11-26 with total page 241 pages. Available in PDF, EPUB and Kindle. Book excerpt: Having safe drinking water is important to all Americans. The Environmental Protection Agency's decision in the summer of 2001 to delay implementing a new, more stringent standard for the maximum allowable level for arsenic in drinking water generated a great deal of criticism and controversy. Ultimately at issue were newer data on arsenic beyond those that had been examined in a 1999 National Research Council report. EPA asked the National Research Council for an evaluation of the new data available. The committee's analyses and conclusions are presented in Arsenic in Drinking Water: 2001 Update. New epidemiological studies are critically evaluated, as are new experimental data that provide information on how and at what level arsenic in drinking water can lead to cancer. The report's findings are consistent with those of the 1999 report that found high risks of cancer at the previous federal standard of 50 parts per billion. In fact, the new report concludes that men and women who consume water containing 3 parts per billion of arsenic daily have about a 1 in 1,000 increased risk of developing bladder or lung cancer during their lifetime.
Download or read book Handbook on Characterization of Biomass Biowaste and Related By products written by Ange Nzihou and published by Springer Nature. This book was released on 2020-02-17 with total page 1394 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides authoritative information, techniques and data necessary for the appropriate understanding of biomass and biowaste (understood as contaminated biomass) composition and behaviour while processed in various conditions and technologies. Numerous techniques for characterizing biomass, biowaste and by-product streams exist in literature. However, there lacks a reference book where these techniques are gathered in a single book, although such information is in increasingly high demand. This handbook provides a wealth of characterization methods, protocols, standards, databases and references relevant to various biomass, biowaste materials and by-products. It specifically addresses sampling and preconditioning methods, extraction techniques of elements and molecules, as well as biochemical, mechanical and thermal characterization methods. Furthermore, advanced and innovative methods under development are highlighted. The characterization will allow the analysis, identification and quantification of molecules and species including biomass feedstocks and related conversion products. The characterization will also provide insight into physical, mechanical and thermal properties of biomass and biowaste as well as the resulting by-products.
Download or read book Preventing Disease Through Healthy Environments written by Annette Prüss-Üstün and published by World Health Organization. This book was released on 2016 with total page 173 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The main message emerging from this new comprehensive global assessment is that premature death and disease can be prevented through healthier environments--and to a significant degree. Analysing the latest data on the environment-disease nexus and the devastating impact of environmental hazards and risks on global health, backed up by expert opinion, this report covers more than 130 diseases and injuries. The analysis shows that 23% of global deaths (and 26% of deaths among children under five) are due to modifiable environmental factors--and therefore can be prevented. Stroke, ischaemic heart disease, diarrhoea and cancers head the list. People in low-income countries bear the greatest disease burden, with the exception of noncommunicable diseases. The report's unequivocal evidence should add impetus to coordinating global efforts to promote healthy environments--often through well-established, cost-effective interventions. This analysis will inform those who want to better understand the transformational spirit of the Sustainable Development Goals agreed by Heads of State in September 2015. The results of the analysis underscore the pressing importance of stronger intersectoral action to create healthier environments that will contribute to sustainably improving the lives of millions around the world."--Page 4 of cover.
Download or read book Remediation Case Studies written by and published by . This book was released on 1995 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book How to Design Wastewater Systems for Local Conditions in Developing Countries written by David M. Robbins and published by IWA Publishing. This book was released on 2014-03-15 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book The Mediterranean region under climate change written by Collectif and published by IRD Éditions. This book was released on 2018-11-19 with total page 736 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book has been published by Allenvi (French National Alliance for Environmental Research) to coincide with the 22nd Conference of Parties to the United Nations Framework Convention on Climate Change (COP22) in Marrakesh. It is the outcome of work by academic researchers on both sides of the Mediterranean and provides a remarkable scientific review of the mechanisms of climate change and its impacts on the environment, the economy, health and Mediterranean societies. It will also be valuable in developing responses that draw on “scientific evidence” to address the issues of adaptation, resource conservation, solutions and risk prevention. Reflecting the full complexity of the Mediterranean environment, the book is a major scientific contribution to the climate issue, where various scientific considerations converge to break down the boundaries between disciplines.
Download or read book Saints of the Atlas written by Ernest Gellner and published by ACLS History E-Book Project. This book was released on 2008-11 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
