A Particle Of Clay

Author : Judith Niechcial
Publisher : Virago Press
ISBN 13 :
Total Pages : 228 pages
Book Rating : 4.76/5 ( download)

DOWNLOAD NOW!

Download or read book A Particle of Clay written by Judith Niechcial and published by Virago Press. This book was released on 2002 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt: One of the most eminent engineers of the 20th century, both on the national anand international stage, Professor Sir Alec Skempton was truly an influential figure in the discipline of soil mechanics. In the late 1940s he was instrumental in developing the subject, and formed the first university department of soil mechanics at Imperial College, London. Over the years the research, papers and books flowed, as did the accolades and recognition. But this is not a book about soil mechanics alone - it relates much more, about the man and how he really viewed life, how he approached challenges and how he would be content only with a job well done.

Author : Paul A. Schroeder
Publisher : Cambridge University Press
ISBN 13 : 110861776X
Total Pages : 255 pages
Book Rating : 4.65/5 ( download)

DOWNLOAD NOW!

Download or read book Clays in the Critical Zone written by Paul A. Schroeder and published by Cambridge University Press. This book was released on 2018-08-09 with total page 255 pages. Available in PDF, EPUB and Kindle. Book excerpt: Clays and clay minerals are the most abundant natural reactive solids on the Earth's surface. This comprehensive review considers clay science in the context of the Critical Zone - the Earth's permeable near-surface layer. Providing information on clays and clay minerals related to geological, biological and material sciences in the Critical Zone, it's well suited for graduate students and researchers interested in clay science, and environmental and soil mineralogy. The book starts with an introduction to clays and clay minerals, their historic background, and a review of how clay science impacts the Critical Zone. Examples and applications demonstrate how clays regulate habitats and determine the availability of other resources. These examples are supported by quantitative field data, including numerical and graphical depictions of clay and clay mineral occurrences. The book concludes by covering Critical Zone clay geochemistry and clay sequences, including the industrial, synthetic medical and extra-terrestrial world of clay science.

Author : William S. Ginell
Publisher :
ISBN 13 :
Total Pages : 12 pages
Book Rating : 4.32/5 ( download)

DOWNLOAD NOW!

Download or read book Preparation of Spherical Clay Particles Containing Radioactive Ions written by William S. Ginell and published by . This book was released on 1952 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Author : Roland Pusch
Publisher :
ISBN 13 :
Total Pages : 162 pages
Book Rating : 4.06/5 ( download)

DOWNLOAD NOW!

Download or read book Clay Particles, Their Size, Shape and Arrangement in Relation to Some Important Physical Properties of Clays written by Roland Pusch and published by . This book was released on 1962 with total page 162 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Author : Richard Bennett
Publisher : Springer Science & Business Media
ISBN 13 : 9400946848
Total Pages : 163 pages
Book Rating : 4.42/5 ( download)

DOWNLOAD NOW!

Download or read book Clay Microstructure written by Richard Bennett and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 163 pages. Available in PDF, EPUB and Kindle. Book excerpt: Plan of Review This review of clay microstructure is aimed at the diverse group of professionals who share an interest in the properties of fine-grained minerals in sediments. During the last several decades, members of this group have included geologists, soil scientists, soil engineers, engineering geologists, and ceramics scientists. More recently, it has included significant numbers of marine geologists and other engineers. Each of the disciplines has developed special techniques for investigating properties of clay sediments that have proven to be fruitful in answering questions of central interest. Knowledge of clay microstructure-the fabric of a sediment and the physico chemical interactions between its components-is fundamental to all these disciplines (Mitchell 1956; Lambe 1958a; Foster and De 1971). Clay fabric refers to the spatial distribution, orientations, and particle-to-particle relations of the solid particles (generally those less than 3. 9 /Lm in size) of sediment. Physico-chemical interac tions are expressions of the forces between the particles. In this review, we trace the historical development of under standing clay microstructure by discussing key scientific papers published before 1986 on physico-chemical interactions in fine grained sediments and on clay fabric. Since the development follows an intricate path, the current view of clay microstructure is summarized. This summary includes a discussion of the present state of knowledge, the observations made so far, and the facts that are now established.

Author : Alexander Graham Cairns-Smith
Publisher : CUP Archive
ISBN 13 : 9780521324083
Total Pages : 216 pages
Book Rating : 4.84/5 ( download)

DOWNLOAD NOW!

Download or read book Clay Minerals and the Origin of Life written by Alexander Graham Cairns-Smith and published by CUP Archive. This book was released on 1986-12-18 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume is the edited proceedings of a conference seeking to clarify the possible role of clays in the origin of life on Earth. At the heart of the problem of the origin of life lie fundamental questions such as: What kind of properties is a model of a primitive living system required to exhibit and what would its most plausible chemical and molecular makeup be? Answers to these questions have traditionally been sought in terms of properties that are held to be common to all contemporary organisms. However, there are a number of different ideas both on the nature and on the evolutionary priority of 'common vital properties', notably those based on protoplasmic, biochemical and genetic theories of life. This is therefore the first area for consideration in this volume and the contributors then examine to what extent the properties of clay match those required by the substance which acted as the template for life.

Author : Shlomo Nir
Publisher :
ISBN 13 : 9781536149593
Total Pages : 0 pages
Book Rating : 4.94/5 ( download)

DOWNLOAD NOW!

Download or read book Water Purification by Micelle-clay Nano-particles written by Shlomo Nir and published by . This book was released on 2019 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book focuses on water purification by micelle-clay nano-particles. The micelle-clay complex is composed of an organic cation (surfactant) with a long alkyl chain, e.g., ODTMA (octadecyltrimethylammonium) that spontaneously forms micelles of several nm in diameters at small concentrations. The positively charged micelles interact with a negatively charged clay (bentonite) at optimal ratios. The resulting complex has a large surface area per weight; it includes large hydrophobic parts and has an excess of a positive charge. The complex is insensitive to higher temperatures (50 0C), to pH values in the range of 2-11, or ionic strengths. Production of powdered and granulated complexes is described. The material characteristics of the micelle-clay complex differ from those of organo-clay of the same composition, which is formed by the interaction of monomers of the surfactant with the clay (Chapters One and Two). Model calculations enable simulations and predictions of removal of pollutants from water in batch or filtration experiments, and can yield cost estimates (Chapter Three). Laboratory and pilot experiments (Chapter Four) yield efficient removal from the water of (i) hydrophobic and anionic organic molecules: herbicides, humic acid, dissolved organic matter, and pharmaceuticals; (ii) inorganic anions, e.g., perchlorate; and (iii) microorganisms: bacteria, viruses, and parasites, e.g., cryptosporidium, which is resistant to chlorination. The (above) use of a micelle-clay complex indicated a big advantage in comparison with activated carbon. Low cost regeneration of used filters after bacteria adsorption is described. Biocidal effects of cations, e.g., ODTMA are demonstrated; released cations during filtration enhanced the filter efficiency. The released cations are removed from water before consumer use by another filter containing activated carbon. Drinking water from lakes is forbidden during cyanobacteria bloom due to harmful toxins. Filtration by the granulated micelle-clay complex and killing of cyanobacteria by ODTMA cations are described. Water purification by other clay-composites such as liposome- and polymer-clay is described in Chapter Five. Collaboration between technologies of water purification are found in Chapter Six: (i) Incubation of grey water in a moving bed biological reactor followed by filtration by the micelle-clay granulated complex enables water reuse at low cost. (ii) Filtration combined with degradation by solar photo-Fenton processes is a promising tertiary treatment of wastewater, including efficient removal of problematic pharmaceuticals. (iii) A new design of the micelle-clay complex may yield enhanced capacity for removal of microorganisms from water by combining filtration with biocidal action of free cations. This book describes inventions in material science and developments of computational procedures for simulations and predictions, and is an authoritative and stimulating reference for researchers, engineers and students involved in water treatment and adsorption processes.

Author : Charles Cushing Ladd
Publisher :
ISBN 13 :
Total Pages : 136 pages
Book Rating : 4.21/5 ( download)

DOWNLOAD NOW!

Download or read book Research in Earth Physics written by Charles Cushing Ladd and published by . This book was released on 1967 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Author : S.A. Miedema
Publisher : IOS Press
ISBN 13 : 1614994544
Total Pages : 572 pages
Book Rating : 4.41/5 ( download)

DOWNLOAD NOW!

Download or read book The Delft Sand, Clay and Rock Cutting Model written by S.A. Miedema and published by IOS Press. This book was released on 2014-10-29 with total page 572 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sand, clay and rock have to be excavated for a variety of purposes, such as dredging, trenching, mining (including deep sea mining), drilling, tunnel boring and many other applications. Many excavations take place on dry land, but they are also frequently required in completely saturated conditions, and the methods necessary to accomplish them consequently vary widely. This book provides an overview of cutting theories. It begins with a generic model, valid for all types of soil (sand, clay and rock), and continues with the specifics of dry sand, water-saturated sand, clay, atmospheric rock and hyperbaric rock. Small blade angles and large blade angles are discussed for each soil type, and for each case considered the equations/model for cutting forces, power and specific energy are given. With models verified by laboratory research, principally from the Delft University of Technology, and data from other recognized sources, this book will prove an invaluable reference for anybody whose work involves major excavations of any kind.

Author : G. Jock Churchman
Publisher : CRC Press
ISBN 13 : 0429532245
Total Pages : 301 pages
Book Rating : 4.45/5 ( download)

DOWNLOAD NOW!

Download or read book Soil Clays written by G. Jock Churchman and published by CRC Press. This book was released on 2019-06-10 with total page 301 pages. Available in PDF, EPUB and Kindle. Book excerpt: As the human population grows from seven billion toward an inevitable nine or 10 billion, the demands on the limited supply of soils will grow and intensify. Soils are essential for the sustenance of almost all plants and animals, including humans, but soils are virtually infinitely variable. Clays are the most reactive and interactive inorganic compounds in soils. Clays in soils often differ from pure clay minerals of geological origin. They provide a template for most of the reactive organic matter in soils. They directly affect plant nutrients, soil temperature and pH, aggregate sizes and strength, porosity and water-holding capacities. This book aims to help improve predictions of important properties of soils through a modern understanding of their highly reactive clay minerals as they are formed and occur in soils worldwide. It examines how clays occur in soils and the role of soil clays in disparate applications including plant nutrition, soil structure, and water-holding capacity, soil quality, soil shrinkage and swelling, carbon sequestration, pollution control and remediation, medicine, forensic investigation, and deciphering human and environmental histories. Features: Provides information on the conditions that lead to the formation of clay minerals in soils Distinguishes soil clays and types of clay minerals Describes clay mineral structures and their origins Describes occurrences and associations of clays in soil Details roles of clays in applications of soils Heavily illustrated with photos, diagrams, and electron micrographs Includes user-friendly description of a new method of identification To know soil clays is to enable their use toward achieving improvements in the management of soils for enhancing their performance in one or more of their three main functions of enabling plant growth, regulating water flow to plants, and buffering environmental changes. This book provides an easily-read and extensively-illustrated description of the nature, formation, identification, occurrence and associations, measurement, reactivities, and applications of clays in soils.