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Nitrates, agriculture, eau

Nitrates, agriculture, eau PDF Author: R. Calvet
Publisher: Editions Quae
ISBN: 9782738002846
Category : Technology & Engineering
Languages : en
Pages : 584

Book Description
The contributions of this symposium on the relation agriculture-nitrogen-water deal with the economical aspects (cost evaluation and cost repartition), the quantitative approach of the nitrogen biochemical cycle, farming systems and nitrogen manegement, and land utilization, nitrogen management and water quality

Nitrates, agriculture, eau

Nitrates, agriculture, eau PDF Author: R. Calvet
Publisher: Editions Quae
ISBN: 9782738002846
Category : Technology & Engineering
Languages : en
Pages : 584

Book Description
The contributions of this symposium on the relation agriculture-nitrogen-water deal with the economical aspects (cost evaluation and cost repartition), the quantitative approach of the nitrogen biochemical cycle, farming systems and nitrogen manegement, and land utilization, nitrogen management and water quality

Convective Heat and Mass Transfer in Porous Media

Convective Heat and Mass Transfer in Porous Media PDF Author: Sadik KakaƧ
Publisher: Springer Science & Business Media
ISBN: 9401132208
Category : Science
Languages : en
Pages : 1083

Book Description
The rapid growth of literature on convective heat and mass transfer through porous media has brought both engineering and fundamental knowledge to a new state of completeness and depth. Additionally, several new questions of fundamental merit have arisen in several areas which bear direct relation to further advancement of basic knowledge and applications in this field. For example, the growth of fundamental heat transfer data and correlations for engineering use for saturated media has now reached the point where the relations for heat transfer coefficients and flow parameters are known well enough for design purposes. Multiple flow field regimes in natural convection have been identified in several important enclosure geometries. New questions have arisen on the nature of equations being used in theoretical studies, i. e. , the Validity of Darcy assumption is being brought into question; Wall effects in high and low velocity flow fields have been found to play a role in predicting transport coefficients; The formulation of transport problems in fractured media are being investigated as both an extension of those in a homogeneous medium and for application in engineering systems in geologic media and problems on saturated media are being addressed to determine their proper formulation and solution. The long standing problem of how to adequately formulate and solve problems of multi-phase heat and mass transfer in heterogeneous media is important in the technologies of chemical reactor engineering and enhanced oil recovery.

Biodegradation and Biodeterioration at the Nanoscale

Biodegradation and Biodeterioration at the Nanoscale PDF Author: Hafiz M. N. Iqbal
Publisher: Elsevier
ISBN: 0128241799
Category : Technology & Engineering
Languages : en
Pages : 751

Book Description
Biodegradation and Biodeterioration at the Nanoscale describes the biodegradation and biodeterioration of materials in the presence of nanomaterials. The book's chapters focus on the basic principles, action mechanisms and promising applications of advanced nanomaterials, along with their integration with biotechnological processes for controlled degradation and deterioration of materials. In addition, the current research indications, positive or negative environmental impacts, legislation and future directions are also discussed. This book is an important reference source for researchers, engineers and scientists working in environmental remediation, biotechnology, materials science, corrosion and nanotechnology. - Provides detailed coverage on how nano-biomaterials degrade and deteriorate - Compares how different types of bionanomaterials decompose - Explains how the priorities of bionanomaterials affect their deterioration rate

Terra 2008

Terra 2008 PDF Author: Leslie Rainer
Publisher: Getty Publications
ISBN: 1606060430
Category : Architecture
Languages : en
Pages : 438

Book Description
Earthen architecture constitutes one of the most diverse forms of cultural heritage and one of the most challenging to preserve. It dates from all periods and is found on all continents but is particularly prevalent in Africa, where it has been a building tradition for centuries. Sites range from ancestral cities in Mali to the palaces of Abomey in Benin, from monuments and mosques in Iran and Buddhist temples on the Silk Road to Spanish missions in California. This volume's sixty-four papers address such themes as earthen architecture in Mali, the conservation of living sites, local knowledge systems and intangible aspects, seismic and other natural forces, the conservation and management of archaeological sites, research advances, and training.

Hemp

Hemp PDF Author: Pierre Bouloc
Publisher: CABI
ISBN: 1845937937
Category : Technology & Engineering
Languages : en
Pages : 321

Book Description
Hemp production for industrial purposes continues to grow worldwide, and is currently being used for many applications including house insulation, paper making, animal bedding, fabric, rope making and also as a biofuel. This book brings together international experts to examine all aspects of industrial hemp production, including the origins of hemp production, as well as the botany and anatomy, genetics and breeding, quality assessment, regulations, and the agricultural and industrial economics of hemp production. A translation of Le Chanvre Industriel, this book has been revised and updated for an international audience and is essential reading for producers of industrial hemp, industry personnel and agriculture researchers and students.

Environmental Geomechanics

Environmental Geomechanics PDF Author: Bernhard A. Schrefler
Publisher: John Wiley & Sons
ISBN: 1118619773
Category : Technology & Engineering
Languages : en
Pages : 393

Book Description
This book covers a range of topics that are of increasing importance in engineering practice: natural hazards, pollution, and environmental protection through good practice. The first half of the book deals with natural risk factors, of both natural and human origin, that should be considered: subsidence, accidental infiltration, soil instability, rockslides and mudslides, debris flow, and degradation of buildings and monuments due to pollution and climactic effects, for example. These problems are highlighted and it is shown that a combination of sophisticated numerical techniques and extensive experimental investigations are necessary in order to effectively tackle these problems. The second half of the book is devoted to the use of polluted sites and associated problems, a topic of growing significance given the increasing reclamation of land from abandoned industrial sites for urban development over the last 20 years. Different types of oil pollution and decontamination methods are described, followed by a discussion of waste management and detailed coverage of confinement liners used in surface waste disposal.

Quality of Groundwater

Quality of Groundwater PDF Author:
Publisher: Elsevier
ISBN: 0080874762
Category : Technology & Engineering
Languages : en
Pages : 1163

Book Description
Quality of Groundwater

Mathematical Models

Mathematical Models PDF Author: Jean-Michel Tanguy
Publisher: John Wiley & Sons
ISBN: 1118587707
Category : Science
Languages : en
Pages : 407

Book Description
This series of five volumes proposes an integrated description of physical processes modeling used by scientific disciplines from meteorology to coastal morphodynamics. Volume 1 describes the physical processes and identifies the main measurement devices used to measure the main parameters that are indispensable to implement all these simulation tools. Volume 2 presents the different theories in an integrated approach: mathematical models as well as conceptual models, used by all disciplines to represent these processes. Volume 3 identifies the main numerical methods used in all these scientific fields to translate mathematical models into numerical tools. Volume 4 is composed of a series of case studies, dedicated to practical applications of these tools in engineering problems. To complete this presentation, volume 5 identifies and describes the modeling software in each discipline.

Heat and Mass Transfer in Refrigeration and Cryogenics

Heat and Mass Transfer in Refrigeration and Cryogenics PDF Author: J. Bougard
Publisher: Chem/Mats-Sci/E
ISBN:
Category : Science
Languages : en
Pages : 690

Book Description


Diagnosis & Prognosis of AAR Affected Structures

Diagnosis & Prognosis of AAR Affected Structures PDF Author: Victor E. Saouma
Publisher: Springer Nature
ISBN: 3030440141
Category : Technology & Engineering
Languages : en
Pages : 594

Book Description
This book presents the work of the RILEM Technical Committee 259-ISR. Addressing two complementary but fundamental issues: the kinetics of the reaction, and how this will affect the integrity of the structure (serviceability and strength), it also provides methodology for assessing past deterioration to enable readers to make engineering/science-based predictions concerning future expansion. The book is divided into six major topics: selection and interpretation of optimal monitoring system for structures undergoing expansion to monitor the progress of the swelling evolution and its consequences; development/refinement of current laboratory procedures to determine the kinetics of the reaction i.e. expansion vs (future) time, and to determine the kinetic characteristics of the time-dependent reaction to be used in a finite element simulation; extrapolation of results from structural component laboratory testing; selection of material properties based on data from existing structures affected by the alkali silica reaction or delayed ettringite formation; identification of critical features that should be present in a finite element code, development of test problems for validation, and a survey of relevant programs able to conduct a transient structural analysis of a structure undergoing chemically induced expansion; and lastly guidelines for finite element codes. The book is intended for practitioners responsible for concrete structures affected by the damaging alkali aggregate reaction, engineers dealing with aging structures, and researchers in the field.