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Author: Corinne Vinches
Publisher:
ISBN:
Category :
Languages : fr
Pages : 235
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Book Description
LA DECOUVERTE RECENTE D'UNE PHASE DE MEMBRANES CONNECTEES ALEATOIREMENT, LA PHASE EPONGE, A MOTIVE DE NOMBREUX TRAVAUX PORTANT SUR LA STRUCTURE ET LES PROPRIETES DE CETTE PHASE. C'EST L'ETUDE DE SES PROPRIETES DYNAMIQUES QUE NOUS ABORDONS DANS CETTE THESE. NOUS DECRIVONS DANS UN PREMIER TEMPS L'ECOULEMENT D'UNE PHASE EPONGE EN MILIEU POREUX POUR METTRE EN EVIDENCE UN PHENOMENE D'OBSTRUCTION LORSQUE LA TAILLE CARACTERISTIQUE DE L'EPONGE DEVIENT COMPARABLE A LA TAILLE DES PORES. LE RESTE DE L'ETUDE EST CONSACRE AUX PHASES EPONGES DU SYSTEME EAU SALEE NACL/SDS/PENTANOL AU VOISINAGE DE LA TRANSITION SYMETRIQUE/ASYMETRIQUE, PAR DIFFUSION DE LA LUMIERE ET PAR MESURES DIELECTRIQUES, GRACE AU DISPOSITIF EXPERIMENTAL QUE NOUS AVONS MIS AU POINT. UNE ETUDE SYSTEMATIQUE EN FONCTION DE LA CONCENTRATION EN SEL REVELE LA PRESENCE DE DEFAUTS COMME EFFET PRECURSEUR A LA TRANSITION AUX PLUS FAIBLES SALINITES
Author: Corinne Vinches
Publisher:
ISBN:
Category :
Languages : fr
Pages : 235
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Book Description
LA DECOUVERTE RECENTE D'UNE PHASE DE MEMBRANES CONNECTEES ALEATOIREMENT, LA PHASE EPONGE, A MOTIVE DE NOMBREUX TRAVAUX PORTANT SUR LA STRUCTURE ET LES PROPRIETES DE CETTE PHASE. C'EST L'ETUDE DE SES PROPRIETES DYNAMIQUES QUE NOUS ABORDONS DANS CETTE THESE. NOUS DECRIVONS DANS UN PREMIER TEMPS L'ECOULEMENT D'UNE PHASE EPONGE EN MILIEU POREUX POUR METTRE EN EVIDENCE UN PHENOMENE D'OBSTRUCTION LORSQUE LA TAILLE CARACTERISTIQUE DE L'EPONGE DEVIENT COMPARABLE A LA TAILLE DES PORES. LE RESTE DE L'ETUDE EST CONSACRE AUX PHASES EPONGES DU SYSTEME EAU SALEE NACL/SDS/PENTANOL AU VOISINAGE DE LA TRANSITION SYMETRIQUE/ASYMETRIQUE, PAR DIFFUSION DE LA LUMIERE ET PAR MESURES DIELECTRIQUES, GRACE AU DISPOSITIF EXPERIMENTAL QUE NOUS AVONS MIS AU POINT. UNE ETUDE SYSTEMATIQUE EN FONCTION DE LA CONCENTRATION EN SEL REVELE LA PRESENCE DE DEFAUTS COMME EFFET PRECURSEUR A LA TRANSITION AUX PLUS FAIBLES SALINITES
Author: Linda Strande
Publisher: IWA Publishing
ISBN: 1780404735
Category : Technology & Engineering
Languages : en
Pages : 428
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Book Description
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.
Author: R. T. Wilson
Publisher: ILRI (aka ILCA and ILRAD)
ISBN:
Category :
Languages : en
Pages : 598
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Book Description
This volume contains 44 papers and 2 abstracts from a international conference on African small ruminants research and development. eleven papers and 1 abstract deal with the importance of small ruminant production systems and economics. Another 11 describe and analyse feed resources and feeding systems and there are 6 papers on reproductive problems and their solutions. Seven papers and 1 abstract review the prevalent health problems under various management systems and present the solutions to these production constraints. The last 9 papers deal with breeds, breeding systems and breed improvement.
Author: Food and Agriculture Organization of the United Nations
Publisher: Food & Agriculture Org.
ISBN: 9789251055212
Category : Technology & Engineering
Languages : en
Pages : 116
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Book Description
Soils are affected by human activities, such as industrial, municipal and agriculture, that often result in soil degradation and loss. In order to prevent soil degradation and to rehabilitate the potentials of degraded soils, reliable soil data are the most important prerequisites for the design of appropriate land-use systems and soil management practices as well as for a better understanding of the environment. The availability of reliable information on soil morphology and other characteristics obtained through examination and description of the soil in the field is essential, and the use of a common language is of prime importance. These guidelines, based on the latest internationally accepted systems and classifications, provide a complete procedure for soil description and for collecting field data. To help beginners, some explanatory notes are included as well as keys based on simple test and observations.--Publisher's description.
Author: David M. Robbins
Publisher: IWA Publishing
ISBN: 178040476X
Category : Science
Languages : en
Pages : 148
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Book Description
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.
Author: Elizabeth Tilley
Publisher:
ISBN: 9783906484570
Category :
Languages : en
Pages : 176
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Book Description
Author: B. T. Kang
Publisher: IITA
ISBN: 0333600800
Category : Agroforestry
Languages : en
Pages : 121
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Book Description
The Tropical Agriculturalist is a series of practical field guides and textbooks for: producers, farmers and farm managers, agricultural extension officers agricultural diploma, degree and vocational students, teachers and lecturers, senior secondary students, as reference books, adult education, rural and community development programmes.
Author: Irene S. Lemos
Publisher:
ISBN: 9780199253449
Category : Social Science
Languages : en
Pages : 356
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Book Description
This is an up-to-date survey of Aegean archaeology at the beginning of the Iron Age (late eleventh and tenth centuries BC). There are chapters on pottery, metal finds, burial customs, architectural remains (and how to use them to understand the social and political structure of the society), cult practices, and developments towards state formation. The book will be useful to field archaeologists, historians of ancient Greece, and students.
Author: David Ridgway
Publisher: CUP Archive
ISBN: 9780521421645
Category : History
Languages : en
Pages : 204
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Book Description
This book acquaints us with the discovery and excavation of the first Greek establishment in the West, Euboean Pithekoussai on the island of Ischia in the Bay of Naples.
Author: Edward Phelps Allis
Publisher:
ISBN:
Category : Anatomy
Languages : en
Pages : 322
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Book Description
