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Guns, Germs, and Steel: The Fates of Human Societies, Diamond Jared

Guns, Germs, and Steel: The Fates of Human Societies

Автор: Diamond Jared
Название:  Guns, Germs, and Steel: The Fates of Human Societies   (Оружие, микробы и сталь: бедствия человеческих обществ)
Издательство: Wiley
Издательство: W. W. Norton & Company
Классификация:
История
Разные темы

ISBN: 0393061310
ISBN-13(EAN): 9780393061314
ISBN: 0-393-06131-0
ISBN-13(EAN): 978-0-393-06131-4
Обложка/Формат: Hardcover
Страницы: 528
Вес: 0.92 кг.
Дата издания: 31.07.2005
Язык: ENG
Иллюстрации: Illustrations
Размер: 23.47 x 16.41 x 3.94 cm
Читательская аудитория: Professional & vocational
Ссылка на Издательство: Link
Поставляется из: США

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Guns germs steel

Автор: Diamond, J
Название: Guns germs steel
ISBN: 0393317552 ISBN-13(EAN): 9780393317558
Издательство: Wiley
Цена: 1055 р.
Наличие на складе: Нет в наличии.
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Modified method of Prestressing Steel Trusses by inducing Lack of fit

Автор: Ponnada Markandeya Raju und Thonangi Raghuram Sand
Название: Modified method of Prestressing Steel Trusses by inducing Lack of fit
ISBN: 3659287792 ISBN-13(EAN): 9783659287794
Издательство: LAP LAMBERT Academic Publishing
Цена: 6527 р.
Наличие на складе: Нет в наличии.
Описание: Trusses are the most common steel structures generally adopted for railway bridges, industrial buildings etc. The quantity of steel used in these structures is very high. Increased quantity of steel increases the cost of the structure. In general, prestress involves the imposition of stresses opposite in sign to those which are caused by the subsequent application of the working loads. The technique of prestressing can be adapted to steel trusses by inducing lack of fit. This work aims at showing that an iterative procedure can identify the member and the amount of lack of fit in that member that results in reduced member forces in the truss. Methodology is illustrated with the help of a typical example. A truss subjected to an external load is analyzed for different magnitudes of lack of fit in each member. The case with minimum sum of compressive and tensile forces is identified so that the sum of the forces obtained due to external loads and the forces obtained after prestressing are less than the forces obtained due to external loads. Hence the corresponding cross sections required is also less comparatively there by resulting a considerable saving in steel quantity.
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Maintenance of blast furnace section: A case study of Steel plant

Автор: Rupinder Singh und Navneet Saini
Название: Maintenance of blast furnace section: A case study of Steel plant
ISBN: 3659270474 ISBN-13(EAN): 9783659270475
Издательство: LAP LAMBERT Academic Publishing
Цена: 4703 р.
Наличие на складе: Нет в наличии.
Описание: In the present research work a systematic approach for maintenance planning and control (Six Step Method) has been applied on one of the critical unit, blast furnace section of steel plant as a case study. Down time has been reduced by analyzing the failure pattern of critical parts of all types of machines/ equipment’s. The study suggested that with proposed maintenance plan, downtime of Blast Furnace Section can be reduced by 20.31% and monetary benefit to the company due to new maintenance policy is of the order of Rs. 36, 50, 40, 000 INR. for one time maintenance in total life span of equipment.
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Yttria Dispersed 9Cr Martensitic Steel by Mechanical Alloying

Автор: S. Kavithaa, P. C. Angelo und R. Subramanian
Название: Yttria Dispersed 9Cr Martensitic Steel by Mechanical Alloying
ISBN: 3659127248 ISBN-13(EAN): 9783659127243
Издательство: LAP LAMBERT Academic Publishing
Цена: 7583 р.
Наличие на складе: Нет в наличии.
Описание: Nuclear reactor technologies being developed for Generation IV reactors promise significant improvements in economics, safety, reliability and sustainability over present technologies by proper choice of cladding and structural material for the nuclear reactor. Studies to develop optimum combination of properties for steels intended for use as wrappers indicated that 9-12Cr type ferritic steels presented superior high temperature strength at temperatures below 873 K and excellent dimensional stability at high irradiation doses. Increasing the operating temperature by Oxide Dispersion Strengthening (ODS) of these steels will make them a promising candidate materials for advanced fast reactor core and fusion reactor blanket applications. The monograph elaborates the synthesis of nano-sized yttria dispersed 9%Cr martensitic steel by Mechanical Alloying (MA) and consolidation employing various powder compaction methodologies. Alloy powder characterization allowed optimization of experimental synthesis and bulk production. Characterization of the consolidated specimens was carried out to study the micro structural evolution during compaction.
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The concrete-steel ITZ influence on chloride threshold for corrosion

Автор: Amit Kenny
Название: The concrete-steel ITZ influence on chloride threshold for corrosion
ISBN: 3848490706 ISBN-13(EAN): 9783848490707
Издательство: LAP LAMBERT Academic Publishing
Цена: 6527 р.
Наличие на складе: Нет в наличии.
Описание: Corrosion damages is the biggest item on the maintenance bill of reinforced concrete (RC) structures. Chloride induced corrosion is the main cause for corrosion initiation. Chloride is the main cause for corrosion initiation in RC. Understanding the corrosion process and the parameters which influence the susceptibility for corrosion initiation, is essential for reducing the cost of corrosion in modern buildings. This book presents the theory of corrosion in reinforced concrete; and describe an investigation of the relationship between the micro-structure of the interfacial transition zone (ITZ) between the concrete and the embedded steel and the chloride concentration for corrosion initiation (chloride threshold). It includes a complete description of the method used in the investigation, results, and comprehensive discussion.
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Critical Evaluation of Air Pollution Control  in Steel Industry

Автор: Pramod Prabhakarrao Nandusekar
Название: Critical Evaluation of Air Pollution Control in Steel Industry
ISBN: 3846587141 ISBN-13(EAN): 9783846587140
Издательство: LAP LAMBERT Academic Publishing
Цена: 4703 р.
Наличие на складе: Нет в наличии.
Описание: Air pollution is a problem for all of us. The average adult breathes over 3,000 gallons of air every day. Children breathe even more air per pound of body weight and are more susceptible to air pollution. Many air pollutants, such as those that form urban smog and toxic compounds, remain in the environment for long periods of time and are carried by the winds hundreds of miles from their origin. Millions of people live in areas where urban smog, very small particles, and toxic pollutants pose serious health concerns. People exposed to high enough levels of certain air pollutants may experience burning in their eyes, an irritated throat, or breathing difficulties. Long-term exposure to air pollution can cause cancer and long-term damage to the immune, neurological, reproductive, and respiratory systems. In extreme cases, it can even cause death. In this book various air pollutant equipment and stydy of integreted steel plant is carried out
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Corrosion of Steel in Concrete

Автор: Bertolini
Название: Corrosion of Steel in Concrete
ISBN: 3527331468 ISBN-13(EAN): 9783527331468
Издательство: Wiley
Цена: 11000 р.
Наличие на складе: Нет в наличии.
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Weld Geometry and Postweld Heat Treatment of a Medium Carbon Steel

Автор: Sunusi Marwana Manladan
Название: Weld Geometry and Postweld Heat Treatment of a Medium Carbon Steel
ISBN: 3659359742 ISBN-13(EAN): 9783659359743
Издательство: LAP LAMBERT Academic Publishing
Цена: 4703 р.
Наличие на складе: Нет в наличии.
Описание: Medium carbon steel is an important engineering material used extensively where hardness, wear resistance and strength are required. A major consideration when welding medium carbon steels is the likelihood of formation of martensite in the heat affected zone (HAZ). This renders the weldment susceptible to cracking. Therefore, special precautions such as proper joint design and preparation; low hydrogen processes and consumables; and postweld heat treatment have to be taken when welding these steels to produce sound quality welds. This book discusses the result of a research conducted to investigate the effect of weld joint geometry and postweld heat treatment on the mechanical properties of weld in a medium carbon steel.
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Experimental Study of Concrete Filled Built-up Steel Tubular Beams

Автор: Moayyad Al-Nasra, Madiha Ammari und AbdulQader Naj
Название: Experimental Study of Concrete Filled Built-up Steel Tubular Beams
ISBN: 3659373168 ISBN-13(EAN): 9783659373169
Издательство: LAP LAMBERT Academic Publishing
Цена: 7669 р.
Наличие на складе: Нет в наличии.
Описание: Using a new system of U-links and/or plated studs in CFT beams to join the steel tube with the concrete core in the compression side of the beam resulted in large confinement of the concrete core. Confinement is achieved by employing the separation expected between the two materials. A total of eight rectangular CFT beam specimens were tested under flexure with different ratios and different diameters for the U-links and/or plated studs were used to examine their effect on the flexural behavior of these beams. Ultimate flexural strength of the CFT beams with U-links and plated studs showed increase of strength about 45% of the specimens with ratio equals 37.5 above standard specimens with no links inside. State of the concrete inside the tubes has shown no crushing of the concrete when those beams were cut open at the location of plastic hinge. Strain measurements revealed that the compressive strain in concrete was 5-6 times the concrete crushing strain.
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FEA of Residual Stresses in Butt Welding of Two Stainless Steel Plates

Автор: Gurinder Singh Brar und Rakesh Kumar
Название: FEA of Residual Stresses in Butt Welding of Two Stainless Steel Plates
ISBN: 3659329495 ISBN-13(EAN): 9783659329494
Издательство: LAP LAMBERT Academic Publishing
Цена: 4703 р.
Наличие на складе: Нет в наличии.
Описание: One of the most widely used permanent joining processes is welding. Welding results in a very complex thermal cycle which results in irreversible elastic-plastic deformation and residual stresses in and around fusion zone and heat affected zone (HAZ). Residual stresses may be an advantage or disadvantage in structural components depending on their nature and magnitude. Due to these residual stresses produced in and around the weld zone the strength and life of the component is reduced. In present study a commercially available finite element code was used to model and analyze a three dimensional model of the butt welded joint of two AISI 304 stainless steel plate used for manufacturing sugar hoppers. Butt welding simulations were performed by four different welding techniques - submerged arc welding (SAW), manual metal arc welding (MMAW), gas metal arc welding (MIG) and gas tungsten arc welding (TIG). Analysis of butt welded joint showed that butt welds produced by MIG resulted in lowest value of residual stress in plates. Critical analysis of butt welded joint by MIG and TIG showed that by increasing plate thickness, the residual stresses also increases.
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Parametric Study Of Castellated Steel Beam

Автор: Madhukar Wakchaure und Aparna Sagade
Название: Parametric Study Of Castellated Steel Beam
ISBN: 3846507814 ISBN-13(EAN): 9783846507810
Издательство: LAP LAMBERT Academic Publishing
Цена: 4703 р.
Наличие на складе: Нет в наличии.
Описание: Engineers are constantly trying to improve the materials and practices of design and construction. One such improvement occurred in built-up structural members in the mid-1930’was castellated beam. The use of castellated beam for various structures is rapidly gaining appeal. This is due to the increased depth of the section without any additional weight, high strength-to-weight ratios and their lower maintenance and painting costs, increase in vertical bending stiffness, ease of service provision, and attractive appearance. However one consequence of the increased depth of the section is the development of various local effects. To fully utilize the engineering advantage of castellated beams, some provisions should be made in designing. With Finite element software ANSYS analysis was carried out on beam with increase in depth of opening, and results were validated with Experimental testing. Results obtained from testing and ANSYS are showing little variations. From ANSYS analysis and experimentation, it was proved that castellated beam up to profile depth 0.6D behave satisfactory for serviceability criteria.
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State and Local Government: Sustainability in the 21st Century

Автор: Simon Christopher, Steel Brent, Lovrich Nicholas J
Название: State and Local Government: Sustainability in the 21st Century
ISBN: 0199752001 ISBN-13(EAN): 9780199752003
Издательство: Oxford Academ
Цена: 3943 р.
Наличие на складе: Нет в наличии.
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