The secret history of America's air war to cut the Ho Chi Minh Trail, the supply routes upon which Communist victory in the Vietnam War was dependent.
The Trails War formed a major part of the so-called "secret war" in South East Asia, yet for complex political reasons, including the involvement of the CIA, it received far less coverage than campaigns like Rolling Thunder and Linebacker. Nevertheless, the campaign had a profound effect on the outcome of the war and on its perception in the USA. In the north, the Barrel Roll campaign was often operated by daring pilots flying obsolete aircraft, as in the early years, US forces were still flying antiquated piston-engine T-28 and A-26A aircraft. The campaign gave rise to countless heroic deeds by pilots like the Raven forward air controllers, operating from primitive airstrips in close contact with fierce enemy forces. USAF rescue services carried out extremely hazardous missions to recover aircrew who would otherwise have been swiftly executed by Pathet Lao forces, and reconnaissance pilots routinely risked their lives in solo, low-level mission over hostile territory. Further south, the Steel Tiger campaign was less covert. Arc Light B-52 strikes were flown frequently, and the fearsome AC-130 was introduced to cut the trails. At the same time, many thousands of North Vietnamese troops and civilians repeatedly made the long, arduous journey along the trail in trucks or, more often, pushing French bicycles laden with ammunition and rice. Under constant threat of air attack and enduring heavy losses, they devised extremely ingenious means of survival. The campaign to cut the trails endured for the entire Vietnam War but nothing more than partial success could ever be achieved by the USA. This illustrated title explores the fascinating history of this campaign, analyzing the forces involved and explaining why the USA could never truly conquer the Ho Chi Minh trail.
Автор: Minh, Nguyen Название: Phong sinh - chuyện nhỏ kho lam ISBN: 1545476500 ISBN-13(EAN): 9781545476505 Издательство: Неизвестно Рейтинг: Цена: 215.00 р. Наличие на складе: Есть у поставщика Поставка под заказ.
Описание:
Nếu chUng ta thực hiện hAnh động phOng sinh chỉ đơn giản như một việc lAm xuất phAt từ tAm từ bi, chUng ta sẽ khOng cO gI phải suy nghĩ, bAn luận nhiều về việc nEn hay khOng nEn, cO lợi hay khOng cO lợi, bởi vI tất cả những Y tưởng ấy đều khOng phải lA động lực thUc đẩy hAnh động của chUng ta. Tuy nhiEn, với những ai lAm việc phOng sinh theo lời khuyEn dạy hay chỉ dẫn của người khAc, hoặc xuất phAt từ những động cơ nAo đO khAc hơn lA tAm từ bi, những người ấy cO thể sẽ phải đối mặt với rất nhiều nghi vấn vA Y kiến phản bAc. Một số người đA thối lui, từ bỏ việc phOng sinh chỉ vI nhận rằng những Y kiến phản bAc ấy lA hợp lY. Mỗi ngAy cO hAng triệu sinh linh trEn trAi đất nAy bị con người giết hại, lại cũng cO rất nhiều con vật được con người bảo vệ, giải thoAt, cứu sống... Nhưng số sinh mạng được cứu sống "rất nhiều" nAy e lA cũng khOng đến số hAng triệu như số bị giết hại. ĐO lA một sự thật VA cOn một sự thật khAc nữa lA người ta thường giết hại loAi vật mA khOng hề đắn đo, do dự, nhưng lại "ra tay cứu giUp" với rất nhiều sự hoAi nghi vA phAn vAn, lưỡng lự. TOi đA gặp khOng It người chưa từng tự mInh lAm việc phOng sinh, nhưng lại cO thể đưa ra rất nhiều lY lẽ để phản bAc, cOng kIch những người lAm việc nAy. Thật ra, họ cũng giống như những người chưa từng ăn phở, khOng nEn đưa ra những lời khen, chE, bInh phẩm về mOn ăn nAy. Tuy nhiEn, họ vẫn lAm điều đO một cAch rất tự nhiEn. Điều đAng buồn lA lại cũng cO khOng It người vI nghe những lời chE bai, phản bAc của họ mA đA bỏ lỡ đi nhiều cơ hội để thực hiện một cOng việc rất tốt đẹp, đO lA việc phOng sinh.
Автор: Le Minh Название: Drawn Together ISBN: 1484767608 ISBN-13(EAN): 9781484767603 Издательство: Little Brown Рейтинг: Цена: 2427.00 р. Наличие на складе: Есть у поставщика Поставка под заказ.
Описание: The recipient of six starred reviews and the APALA Asian/Pacific American Award for Literature When a young boy visits his grandfather, their lack of a common language leads to confusion, frustration, and silence. But as they sit down to draw together, something magical happens-with a shared love of art and storytelling, the two form a bond that goes beyond words. With spare, direct text by Minh L and luminous illustrations by Caldecott Medalist Dan Santat, this stirring picturebook about reaching across barriers will be cherished for years to come. A Junior Library Guild selection Named a Best Book of 2018 by the Wall Street Journal, NPR, Smithsonian, Kirkus Reviews, School Library Journal, Booklist, the Bulletin of the Center for Children's Books, BookRiot, the New York Public Library, the Chicago Public Library-and many more
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: 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.
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.
Описание: This first-year Vietnamese language textbook introduces college students to all aspects of the Vietnamese language and culture in twelve comprehensive chapters. The book is enhanced with an answer key to the exercises, grammar indices, and full vocabulary lists.
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