Download or read book Etude des champs de vitesse dans les effluents des r seaux d assainissement written by Walid Jaafar and published by . This book was released on 2006 with total page 225 pages. Available in PDF, EPUB and Kindle. Book excerpt: L’objectif principal de la thèse est l’étude des champs de vitesse dans des écoulements chargés de particules et le développement des algorithmes de traitement de signal permettant l’extraction de la vitesse à partir des distributions fréquentielles du signal Doppler. La vitesse est obtenue en calculant la densité spectrale de puissance par deux approches temporelle et spectrale. L’efficacité de l’appareil pour mesurer les profils de vitesse et les intensités turbulentes a été prouvée dans des bancs d’essai de laboratoire ou in situ. La précision des mesures pourrait être améliorée par l’application de la méthode d’élimination des échos parasites en utilisant plusieurs PRF. La dernière partie de la thèse fut consacrée à l’étude des écoulements par simulation numérique avec le code de calcul Fluent. Nous validons le modèle en monophasique et nous réalisons des simulations en multiphasique à travers la modélisation de la surface libre et le suivi des trajectoires des particules solides.
Download or read book Rh ologie et coulement de fluides charg s written by Abdelhakim Benslimane and published by . This book was released on 2012 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ce travail est une contribution expérimentale à l'étude rhéologique et en écoulement de fluides complexes (à seuil et thixotropes) transitant dans un circuit hydraulique. Il s'agit notamment de suspensions de bentonite ainsi que des complexes bentonite/polymère. L'étude porte sur l'évolution des pertes de charge et des champs de vitesse et se situe en régime laminaire, transitoire et turbulent. L'étude a été réalisée en utilisant un vélocimètre ultrasonore Doppler pulsé développé au laboratoire. Dans la première partie expérimentale de la thèse, des mesures rhéologiques et en écoulement ont été effectuées sur des suspensions de bentonite pures (sans additifs) à différentes concentrations. A partir des essais sur boucle hydraulique, une étude détaillée est présentée sur l'évolution des coefficients de frottement et des profils de vitesse pour les différents régimes d'écoulement. Dans une seconde partie, une suspension de bentonite pure et des mélanges bentonite/CMC à différentes concentrations massiques ont été étudiées en termes de comportement rhéologique et hydrodynamique en écoulement en conduite. En ce qui concerne les mesures effectuées en boucle hydraulique, il a été montré que le polymère a des propriétés viscosifiantes en régime laminaire. Par contre, en régime turbulent, le polymère agit comme un réducteur de frottement. La dernière partie de la thèse a été consacrée à l'étude de l'influence de la température sur le comportement rhéologique des solutions de polymère et des mélanges argile/polymère. Les mesures rhéologiques à différents paliers de températures ainsi que les balayages en température ont mis en évidence le caractère thermodépendant des dispersions.
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 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 Compendium of Sanitation Systems and Technologies written by Elizabeth Tilley and published by . This book was released on 2014 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book European Seagrasses written by Jens Borum and published by . This book was released on 2004 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt: The goal of the report project is to define the habitat requirements of seagrasses in the European coasts, the present threats to the sustainability of the ecosystem they form, and their resilience to disturbance in order to strengthen our forecast capacity and formulate cost-effective monitoring plans and management strategies.
Download or read book Cambridge Handbook of Engineering Education Research written by Aditya Johri and published by Cambridge University Press. This book was released on 2014-02-10 with total page 1124 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Cambridge Handbook of Engineering Education Research is the critical reference source for the growing field of engineering education research, featuring the work of world luminaries writing to define and inform this emerging field. The Handbook draws extensively on contemporary research in the learning sciences, examining how technology affects learners and learning environments, and the role of social context in learning. Since a landmark issue of the Journal of Engineering Education (2005), in which senior scholars argued for a stronger theoretical and empirically driven agenda, engineering education has quickly emerged as a research-driven field increasing in both theoretical and empirical work drawing on many social science disciplines, disciplinary engineering knowledge, and computing. The Handbook is based on the research agenda from a series of interdisciplinary colloquia funded by the US National Science Foundation and published in the Journal of Engineering Education in October 2006.
Download or read book Engineering written by Unesco and published by UNESCO. This book was released on 2010-01-01 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report reviews engineering's importance to human, economic, social and cultural development and in addressing the UN Millennium Development Goals. Engineering tends to be viewed as a national issue, but engineering knowledge, companies, conferences and journals, all demonstrate that it is as international as science. The report reviews the role of engineering in development, and covers issues including poverty reduction, sustainable development, climate change mitigation and adaptation. It presents the various fields of engineering around the world and is intended to identify issues and challenges facing engineering, promote better understanding of engineering and its role, and highlight ways of making engineering more attractive to young people, especially women.--Publisher's description.
Download or read book Engineering for Sustainable Development written by International Centre for Engineering Education and published by UNESCO Publishing. This book was released on 2021-03-02 with total page 183 pages. Available in PDF, EPUB and Kindle. Book excerpt: The report highlights the crucial role of engineering in achieving each of the 17 SDGs. It shows how equal opportunities for all is key to ensuring an inclusive and gender balanced profession that can better respond to the shortage of engineers for implementing the SDGs. It provides a snapshot of the engineering innovations that are shaping our world, especially emerging technologies such as big data and AI, which are crucial for addressing the pressing challenges facing humankind and the planet. It analyses the transformation of engineering education and capacity-building at the dawn of the Fourth Industrial Revolution that will enable engineers to tackle the challenges ahead. It highlights the global effort needed to address the specific regional disparities, while summarizing the trends of engineering across the different regions of the world.
Download or read book Livres disponibles 1996 written by Electre and published by . This book was released on 1995 with total page 1440 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Crying Out for Change written by Deepa Narayan-Parker and published by World Bank Publications. This book was released on 2000 with total page 342 pages. Available in PDF, EPUB and Kindle. Book excerpt: A multi-country research initiative to understand poverty from the eyes of the poor, the Voices of the Poor project was undertaken to inform the World Bank's activities and the upcoming World Development Report 2000/01. The research findings are being published in three books: "Can Anyone Hear Us?" gathers the voices of over 40,000 poor women and men in 50 countries from the World Bank's participatory poverty assessments (Deepa Narayan, Raj Patel, Kai Schafft, Anne Rademacher, and Sarah Koch-Schulte, authors). "Crying Out for Change" pulls together new field work conducted in 1999 in 23 countries (Deepa Narayan, Robert Chambers, Meera Shah, and Patti Petesch, authors). "From Many Lands" offers regional patterns and country case-studies (Deepa Narayan and Patti Petesch, editors). Voices of the Poor marks the first time such an exercise has been undertaken in so many developing countries and transition economies around the world. It provides a unique and detailed picture of the life of the poor and explains the constraints poor people face to escape from poverty in a way that more traditional survey techniques do not capture well. Each of the three volumes demonstrates the importance of voice and power in poor people's definition of poverty. Voices of the Poor concludes that we need to expand our conventional views of poverty which focus on income expenditure, education, and health to include measures of voice and empowerment.
Download or read book Role of Phosphorus in Eutrophication written by Alfred Frank Bartsch and published by . This book was released on 1972 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book WHYCOS written by and published by . This book was released on 1998 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Olive Growing written by and published by . This book was released on 2010 with total page 756 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Light Green Society written by Michael Bess and published by University of Chicago Press. This book was released on 2003-11-15 with total page 404 pages. Available in PDF, EPUB and Kindle. Book excerpt: The accelerating interpenetration of nature and culture is the hallmark of the new "light-green" social order that has emerged in postwar France, argues Michael Bess in this penetrating new history. On one hand, a preoccupation with natural qualities and equilibrium has increasingly infused France's economic and cultural life. On the other, human activities have laid an ever more potent and pervasive touch on the environment, whether through the intrusion of agriculture, industry, and urban growth, or through the much subtler and more well-intentioned efforts of ecological management. The Light-Green Society limns sharply these trends over the last fifty years. The rise of environmentalism in the 1960s stemmed from a fervent desire to "save" wild nature-nature conceived as a qualitatively distinct domain, wholly separate from human designs and endeavors. And yet, Bess shows, after forty years of environmentalist agitation, much of it remarkably successful in achieving its aims, the old conception of nature as a "separate sphere" has become largely untenable. In the light-green society, where ecology and technological modernity continually flow together, a new hybrid vision of intermingled nature-culture has increasingly taken its place.
Download or read book Hydrocomplexity written by Shahbaz Khan and published by . This book was released on 2010 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt: Partial contents: Monitoring and Evaluating the Water Cycle; Linking Climate Change with Water Cycle Management; Parsimonious vs Complicated Approaches; Whole-of- System and Adaptative Approaches; Need for Transdisciplinary Issues Approaches to Deal with Water Related Ecosystems; Integrated Approaches; Role of Knowledge Platforms for Community Engagement; From Artificial to Embodied Intelligence; Water Allocation Dilemma; Water Quality a Critical Issue; Managing Hydrohazards.
Download or read book Olive Production Manual written by G. Steven Sibbett and published by UCANR Publications. This book was released on 2005 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt: This bestselling manual is the definitive guide to olive production in California. This 180-page manual is fully illustrated with 40 tables, 19 line drawings, and 36 charts, and 100 color and black and white photos. The most notable additions to this edition include a new chapter on deficit irrigation, a greatly expanded chapter on olive oil production, and coverage of four new pests, including the olive fly. Includes production techniques for commercial growers worldwide - from orchard planning and maintenance to harvesting and postharvest processing. Contains information on pollination, pruning for shaker and vertical rotating comb harvest, mechanical pruning, deficit irrigation, mechanical harvesting methods including trunk-shaking and canopy contact harvesters, postharvest handling and processing methods, and olive oil production. Also includes information on new pests including olive fly, oleander scale, olive mite, and black vine weevil.
