Описание: The diamond is the hardest natural substance known. It is found in a type of igneous rock known as kimberlite. The diamond itself is essentially a chain of carbon atoms that have crystallised. The stones unique hardness is a result of the densely concentrated nature of the carbon chains. Like other igneous rocks, kimberlite was formed over the course of thousands of years by volcanic action that occurred during the formation of the earths crust. It is thought that diamonds were first discovered in India about 6,000 years ago in the riverbeds of the region. India was the only known source of the rocks for over a thousand years, until they were unearthed in Borneo around A.D. 600. During the Middle Ages, the diamond was overshadowed by some of the more colourful gems like the ruby and emerald. In the 18th century, diamond deposits were discovered in Brazil in small quantities, and later in Australia, Russia, and the United States. Block caving is the most commonly used method in excavating diamonds from kimberlite deposits. This method offers the highest yield and thus is the most cost effective. In the crushing operation, which occurs in the below-ground mining facilities, large chunks of kimberlite are broken up into more easily transportable segments. Diamonds will continue to be used in industry and hightechnology enterprises, but synthetically produced facsimiles -- first manufactured in 1953 -- may accomplish some of the tasks originally the exclusive province of the real stone. These "manufactured" gems have the same properties of hardness and durability, and while they will never be as popular as the real diamond for adomment purposes, they are well suited for industrial applications. This book provides comprehensive overview on origin, exploration, and history of diamond.
Автор: Bich Minh Nguyen Название: Short Girls ISBN: 0141039175 ISBN-13(EAN): 9780141039176 Издательство: Random House - Penguin Рейтинг: Цена: 2111.00 р. Наличие на складе: Поставка под заказ.
Описание: Sisters Van and Linny are short. But they couldn`t be more different. Van`s the overachiever - a high-flying lawyer with a pristine home and husband, until the husband walks out. Linny is fashionable, flighty, works for a catering firm called You Did It Dinners and has just been told by her married lover that he`s sticking with his wife.
Автор: Minh Chi Ngo Название: Minerals, Metals and Sustainability ISBN: 1681176653 ISBN-13(EAN): 9781681176659 Издательство: Gazelle Book Services Рейтинг: Цена: 31876.00 р. Наличие на складе: Поставка под заказ.
Описание: Minerals, metals and sustainability inspects the utilisation of minerals and mineral products and the consequences for sustainability of the consumption of finite mineral resources and the wastes related with their manufacture and usage. It delivers a multi-disciplinary approach that incorporates the physical and earth sciences with the social sciences, ecology and economics. Nowadays, the use of minerals is common in everyday items such as toothpaste, eyeglasses and some life saving hospital equipments. With the growth of the mining industry and development of advanced extraction techniques, more areas are being identified and selected for extraction of minerals. Abandoned land mines, mining in open areas, drilling for all- all these activities, if unplanned and not environmently-friendly also affects human health. This has led to concerns regarding the impact that mining has on the ecological health of the region and the people living in the area. Different methods of mining have different impacts on the environment. Sustainable development is the need of the hour if we are to provide a secure future for future generations. The book should be of great valuable for practising engineers, geologists and scientists; professionals in government service in areas such as resources, environment and sustainability; and non-technical professionals working in the minerals industry or in sectors servicing the minerals industry.
Автор: Minh Chi Ngo Название: Designing the Coal Preparation Plant of the Future ISBN: 168117572X ISBN-13(EAN): 9781681175720 Издательство: Gazelle Book Services Рейтинг: Цена: 30094.00 р. Наличие на складе: Поставка под заказ.
Описание: Coal preparation plants are designed to clean impurities, such as soil, sand and rock from coal, to ready it for transportation to power plants and coking facilities for use in steel processing. Monitoring flow through the coal preparation process can be difficult as the coal is abrasive and can cause inaccuracies and maintenance issues for intrusive instruments. A Coal preparation plant generally use gravity process equipment to separate the refuse from the product (coal). Coal has a specific gravity between 1.35 and 1.5, while the refuse rock has a Specific Gravity of 2.1 to 2.3. Heavy Media is the most popular method of cleaning coarse sizes. Heavy media cyclones are being used more often for fines size fractions. Flotation is generally used to clean the -28 mesh size fraction, although spirals and heavy media cyclones have shown success in cleaning down to 100 mesh coal feed. Spirals are generally used for middling sizes. Modular Coal Preparation Plants (MCPP) prepares coal for a cleaner burning process, enhanced calorific value and cleaner emissions. MCPPs consist of several modules including a raw coal preparation (crushing and screening station), a coal feed and washing module (jigging and Heavy Medium cyclone) as well as a dewatering module. Designing the Coal Preparation Plant of the Future provides comprehensive overview on several current and future challenges that must be considered in the design and operation of coal preparation facilities. These challenges dictate that we constantly strive to improve plant. Coal Preparation Engineers are meeting this challenge of the future by designing large modem environmentally acceptable plants.
In the first ever book devoted to a critical investigation of the personal style blogosphere, Minh-Ha T. Pham examines the phenomenal rise of elite Asian bloggers who have made a career of posting photographs of themselves wearing clothes on the Internet. Pham understands their online activities as “taste work” practices that generate myriad forms of capital for superbloggers and the brands they feature. A multifaceted and detailed analysis, Asians Wear Clothes on the Internet addresses questions concerning the status and meaning of “Asian taste” in the early twenty-first century, the kinds of cultural and economic work Asian tastes do, and the fashion public and industry’s appetite for certain kinds of racialized eliteness. Situating blogging within the historical context of gendered and racialized fashion work while being attentive to the broader cultural, technological, and economic shifts in global consumer capitalism, Asians Wear Clothes on the Internet has profound implications for understanding the changing and enduring dynamics of race, gender, and class in shaping some of the most popular work practices and spaces of the digital fashion media economy.
Описание: Vietnam is a fascinating country, still unspoilt by mass tourism unlike some nearby countries, and although there are several guides already published (including one from the author of this book), they tend to concentrate in the main attractions, most of which are concentrated in the city centre, while ignoring some of the beauties, which although not far away from the centre, hardly see any foreign face. From the awarded author of "Saigon 2013: Guide to Ho Chi Minh City", and "Vietnam Business and people, understanding to cultural differences" comes this new guide book to help you discover some hidden gems in Ho Chi Minh City, giving you the opportunity to observe and experience real life of Vietnamese people. What will you find in this book: -Very interesting hidden temples, covering the many religions practised in Vietnam. -How to reach the suggested sites from the city centre. -Time to reach them, and how much a taxi will cost. -Suggestions for best eats nearby. -Daily real life of Vietnamese. -Markets where Vietnamese shop (Ben Thanh market is for tourist only ) at Vietnamese prices. -Lots of pictures and maps. -Suggested walking itineraries, and time to do them. -Up to date information as per January 2014
Описание: This book offers the first detailed English-language examination of the Great Vietnamese Famine of 1945, which left at least a million dead, and links it persuasively to the largely unexpected Viet Minh seizure of power only months later. Drawing on extensive research in French archives, Geoffrey C. Gunn offers an important new interpretation of Japanese Vichy French wartime economic exploitation of Vietnam s agricultural potential. He analyzes successes and failures of French colonial rice programs and policies from the early 1900s to 1945, drawing clear connections between colonialism and agrarian unrest in the 1930s and the rise of the Viet Minh in the 1940s. Gunn asks whether the famine signaled a loss of the French administration s mandate of heaven, or whether the overall dire human condition was the determining factor in facilitating communist victory in August 1945. In the broader sweep of Vietnamese history, including the rise of the communist party, the picture that emerges is not only one of local victimhood at the hands of outsiders French and, in turn, Japanese but the enormous agency on the part of the Vietnamese themselves to achieve moral victory over injustice against all odds, no matter how controversial, tragic, and contested the outcome. As the author clearly demonstrates, colonial-era development strategies and contests also had their postwar sequels in the American war, just as land, land reform, and subsistence-sustainable development issues persist into the present.
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