Lambert M. Surhone, Mariam T. Tennoe, Susan F. Henssonow
High Quality Content by WIKIPEDIA articles! A drillship is a maritime vessel that has been fitted with drilling apparatus. It is most often used for exploratory offshore drilling of new oil or gas wells in deep water or for scientific drilling. The drillship can also be used as a platform to carry out well maintenance or completion work such as casing and tubing installation or subsea tree installations. It is often built to the design specification of the oil production company and/or investors, but can also be a modified tanker hull outfitted with a dynamic positioning system to maintain its position over the well. Данное издание не является оригинальным. Книга печатается по...
ISBN: 978-6-1333-8574-0
Издательство:
Книга по требованию
Дата выхода: июль 2011
Best results in blasting are achievable from considering all influential mining and geological factors in the establishment of the parameters of blasting rounds charge design most fit to deliver the desired degree of fragmentation and blasting economics. The course content is focused on understanding the formulations of commercial explosives and initiation systems used in surface and underground rock blasting; the mechanisms of explosive rock fragmentation in various mining and geological conditions; the techniques of rock blasting used in surface and underground mining and construction; trouble shooting in surface and underground blasting; blasting computations and optimization of blasting rounds charge design and firing in any mining...
ISBN: 978-3-8383-7231-0
Издательство:
Книга по требованию
Дата выхода: июль 2011
Plastic containers are extensively used for transportation and storage of a vast variety of fluids due to their low production cost and easy manufacturing. Nevertheless, they are prone to sudden failure when subjected to impact loading, such as drop impact. There is a basic lack of understanding of the fundamental mechanisms leading to such failure as well as the effects of parameters, such as pressure, strain rate, container design, material properties, etc.. The main aim of this study is to investigate the behaviour of water-filled blow-moulded polyethylene containers sunbjected to drop impact, and the mechanisms leading to their failure in order to be able to predict when such failure will occur. To this end, a combined...
ISBN: 978-3-8433-8692-0
Издательство:
Книга по требованию
Дата выхода: июль 2011
This thesis is an introduction to ductile failure in sheet metals. First an overview of the main models existing in the literature is given, then examples of applications are provided to illustrate how a damage model can be actually applied to industrial processes. A procedure to identify the parameters of a constitutive and damage model starting from tensile tests and full-field measurements is detailed. The damage model, implemented in a FE code, is used to predict failure in sheet and tube hydroforming processes. The possibility of using numerical tools to predict plastic instabilities such as bursting or wrinkling is also discussed. Finally, in order to show a different way of tackling the problem of ductile fracture, a theoretical...
ISBN: 978-3-8433-8474-2
Издательство:
Книга по требованию
Дата выхода: июль 2011
Hardmetals and cermets are widely used as tool materials in machining and forming applications as well as materials for wear components because of their excellent combination of mechanical properties. Time-dependent mechanical degradation of these heterogeneous materials containing natural microstructural defects (pores, non-metallic inclusions or inhomogeneities and etc.) occurs at complex service conditions. The aims of the present work are to conduct fatigue strength predictions from limited data and to study novel TiC-based cermets (prospective for metal forming) to substitute conventional tungsten based hardmetals. The theoretical models of fatigue and surface fatigue predictions are proposed and proved experimentally. All results...
ISBN: 978-3-8364-5632-6
Издательство:
Книга по требованию
Дата выхода: июль 2011
Draglines are massive and expensive excavators used for primary excavation in strip mining operations. Inefficient use of draglines may cause production losses, increased unexpected downtimes, and even catastrophic damages. Understanding the dynamic behavior of the machine under extreme operating conditions will ensure dragline longevity, minimized maintenance cost with significant benefits to the industry. This book focuses on the development and implementation of dragline dynamic modeling and simulation using kinematics, dynamics and numerical modeling. The research findings showed that computer modeling and simulation provides a tool for evaluating the full-scale design of a system without building time-consuming and costly physical...
ISBN: 978-3-8383-3203-1
Издательство:
Книга по требованию
Дата выхода: июль 2011
Lambert M. Surhone, Mariam T. Tennoe, Susan F. Henssonow
Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Dynamoblech, Elektroblech oder Transformatorenblech bezeichnet Blechmaterial aus einer Eisen-Silizium-Legierung mit weichmagnetischen Eigenschaften, die zur Herstellung von magnetischen Kreisen fur elektrische Maschinen, also von Dynamos, Transformatoren und Elektromotoren verwendet werden. Das Blech ist in den Normen "Kaltgewalztes nicht kornorientiertes Elektroblech und -band im schlussgegluhten Zustand" (DIN EN 10106: 2007-11) und "Kornorientiertes Elektroblech und -band im schlussgegluhten Zustand" (DIN EN 10107: 2005-10) beschrieben. Данное издание не является...
ISBN: 978-6-1332-3246-4
Издательство:
Книга по требованию
Дата выхода: июль 2011
Accurate and reliable information about the current state of a dynamic process is paramount for plant monitoring, control, optimization, and management. Unfortunately, plant data are often corrupted by measurement errors that reduce the efficiency of strategies devised by plant operators, engineers, and managers to improve plant operations. This book contributes to the development of dynamic data reconciliation (DDR) techniques, namely, optimization-based DDR, predictor-corrector-based DDR, and auto-associative-neural-network-based DDR implemented in real time and closed loop to attenuate the measurement errors. Examples clearly illustrate how measurement errors affect plant monitoring and controller performance, and how the embedded DDR...
ISBN: 978-3-6392-1779-7
Издательство:
Книга по требованию
Дата выхода: июль 2011
Fischer-Tropsch Synthesis (FTS) is the reaction between carbon monoxide and hydrogen to produce gasoline range hydrocarbons. Continuing rise in oil prices and tougher environmental regulations has inspired a resurgent of interests in alternative fuels synthesis technologies. In this book, the suitability of molybdenum and tungsten carbides as FT catalysts has been investigated as a possible cost-effective alternative to noble metals in FTS. The authors introduced a new method for producing high surface area metal carbide catalysts – via precipitation from homogeneous solution followed by carburization in a mixture of propane and hydrogen. Catalyst design and optimisation based on statistical strategy was employed to investigate the...
ISBN: 978-3-6392-2092-6
Издательство:
Книга по требованию
Дата выхода: июль 2011
The performance of piles in liquefying ground under earthquake loading is a complex problem due to the effects of a progressive build-up of pore water pressures in the saturated soils. The loss of soil strength and stiffness due to liquefaction may develop large bending moments and shear forces in piles, possibly leading to pile damage. The significance of liquefaction-related damage to pile foundations has been clearly demonstrated by the major earthquakes that have occurred during past years. The present investigation is to find out the effect of earthquake induced lateral soil movement on lateral pile capacity. Modelling and the analyses are done using PLAXIS 2D. A plane strain alaysis is carried out. Soil layers are modelled as 15...
ISBN: 978-3-6392-1612-7
Издательство:
Книга по требованию
Дата выхода: июль 2011
Erdbebenwirkungen stellen in vielen Landern der Erde ein erhebliches Gefahrdungspotential fur Gebaude und somit auch fur Leib und Leben der Bewohner dar. Die grossen Erdbeben in der jungeren Vergangenheit (China, Kalifornien, Japan, Turkei, Indien, Taiwan usw.) haben dieses Problem deutlich vor Augen gefuhrt. Wahrend in den industrialisierten Landern wie USA oder Japan seit Jahrzehnten eine erdbebensichere Bauweise verfolgt wird bzw. erdbebengefahrdete Bauwerke nachverstarkt werden, hat sich das Gefahrdungspotential in den so-genannten Dritt- bzw. Schwellenlandern kaum verandert. Hier fuhren auch Erdbeben geringerer Intensitat immer noch zu grossen Schaden und zahlreichen Opfern. Im Rahmen der Arbeit werden Moglichkeiten der...
ISBN: 978-3-6390-6954-9
Издательство:
Книга по требованию
Дата выхода: июль 2011
Frederic P. Miller, Agnes F. Vandome, John McBrewster
High Quality Content by WIKIPEDIA articles! High Quality Content by WIKIPEDIA articles! An echo machine is the early name for a sound processing device used with electronic instruments to repeat the sound and produce a simulated echo. The device was popular with guitarists and was used by Brian May, Jimmy Page and Syd Barrett among others. Nowadays it would normally be called a Delay or Echo. Данное издание не является оригинальным. Книга печатается по технологии принт-он-деманд после получения заказа.
ISBN: 978-6-1340-2609-3
Издательство:
Книга по требованию
Дата выхода: июль 2011
A numerical model is developed to simulate the steady state behaviour of a Domestic Refrigerator Evaporator controlled by a expansion valve. The liquid-vapour slip in the two-phase region of the evaporator is accounted for by a void fraction model. The Refrigerator is one of the most important and the biggest energy-consuming device. The selected Refrigerant mixtures are tested as potential short and mid-term substitutes for CFC12, HFC134a with some hydrocarbons (HC290) are considered as components of refrigerant mixtures but mineral oil is used for the analysis. HFC134a with HC 290 are used as the working fluid and without frost formation at the evaporator. Данное издание не является оригинальным....
ISBN: 978-3-6393-0167-0
Издательство:
Книга по требованию
Дата выхода: июль 2011
Hydrology is the main subject of water resources system planning. Basic concept of hydrology is used to design, analyze, and evaluate any project of water resources. Hydrograph is one important part of eco-hydrology. Ideally, every watershed has its own particular unit hydrograph. There are many patterns to develop synthetic unit hydrograph. Such a conditional deficiency in particular, however had respectively placed synthetic unit hydrograph models to be quite great utility. Данное издание не является оригинальным. Книга печатается по технологии принт-он-деманд после получения заказа.
ISBN: 978-3-8433-7258-9
Издательство:
Книга по требованию
Дата выхода: июль 2011
Frederic P. Miller, Agnes F. Vandome, John McBrewster
Ecological Engineering Methods is when researchers try to tap biologically-based energy sources. Some projects include engineering new organisms that produce hydrogen from water and sunlight in environmentally friendly ways with no waste products, and transforming the way man interacts with the environment. One of the more familiar techniques of ECO- Engineering is Bioremediation. Using oil-eating bacteria created by Eco-Engineering, Bioremidiation is applied to oil/chemical spills worldwide.We have to distinguish between Primary and Secondary methods of producing energy. Making hydrogen from water by electrolysis will use more energy than is available in the hydrogen, because processing always has nonzero wastage. When the hydrogen is...
ISBN: 978-6-1306-7264-5
Издательство:
Книга по требованию
Дата выхода: июль 2011
Frederic P. Miller, Agnes F. Vandome, John McBrewster
High Quality Content by WIKIPEDIA articles! Eddystone Lighthouse is on the treacherous Eddystone Rocks, 9 statute miles (14 kilometres) south west of Rame Head, United Kingdom. While Rame Head is in Cornwall, the rocks are in Devon and composed of Precambrian Gneiss. The current structure is the fourth lighthouse to be built on the site. The first and second were destroyed. The third, also known as Smeaton's Tower, is the best known because of its influence on lighthouse design and its importance in the development of concrete for building. Its upper portions have been re-erected in Plymouth as a monument. The lighthouse inspired a sea shanty, frequently recorded, that begins "My father was the keeper of the Eddystone light //And he...
ISBN: 978-6-1340-3108-0
Издательство:
Книга по требованию
Дата выхода: июль 2011
Frederic P. Miller, Agnes F. Vandome, John McBrewster
High Quality Content by WIKIPEDIA articles! Edmund Dummer (1651–1713) was an English naval engineer and shipbuilder who, as Surveyor of the Navy, founded the Royal Navy dockyard at (Devonport), Plymouth and extended that at Portsmouth. His survey of the Royal Navy Dockyards is a valuable and well-known historic document. He also served Arundel as Member of Parliament for approximately ten years and founded the first packet service between Falmouth, Cornwall and the West Indies. He died a bankrupt in the Fleet debtors' prison. Данное издание не является оригинальным. Книга печатается по технологии принт-он-деманд после получения заказа.
ISBN: 978-6-1317-7622-9
Издательство:
Книга по требованию
Дата выхода: июль 2011
Frederic P. Miller, Agnes F. Vandome, John McBrewster
Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Dr. Edward Keonjian was a prominent engineer, an early leader in the field of low-power electronics, the father of microelectronics. In 1954 Keonjian designed the world's first solar-powered, pocket-sized radio transmitter. In 1959 Keonjian designed the first prototype of integrated circuit. In 1963 he organized the world's first international symposium on low-power electronics. Later on Keonjian collaborated with NASA astronaut Neil Armstrong as chief of failure analysis on the Apollo 11 project. Данное издание не является оригинальным. Книга печатается по...
ISBN: 978-6-1342-6109-8
Издательство:
Книга по требованию
Дата выхода: июль 2011
This book shows a simplified approach to evaluate the integrated effects of global warming (climate change and sea level rise) and anthropogenic stress such as land use change on coastal groundwater resources, concerning the salinity intrusion in coastal aquifers. It helps to understand the behaviour of the coastal aquifer systems regionally as well as globally. As the proposed approach assists to overcome the problems due to lack of data and the available laborious and time consuming methodologies, it will be useful in areas where limited hydrological data is available. The introduced approach has been applied to evaluate the situation of global fresh coastal groundwater resources over the next century. Global scale evaluation shows...
ISBN: 978-3-6392-4498-4
Издательство:
Книга по требованию
Дата выхода: июль 2011
This book contains eight chapters include with references. Chapter one contains the description about the work. Chapter two contains literature survey. Chapter three describes lock stitch formation process. Chapter four contains preliminary investigation of the thesis work. Chapter five contains experimental details of the work. In this chapter a grading system is developed on the respect of some sewing properties. Chapter six contains discussion of results.Conclusion implies that both sewing thread count and SPI affect sewing quality. At present sewing thread count is selected according to the GSM, strength, length, uniformity, elasticity, etc of the fabric. Our research indicates that this approach of selecting sewing thread count is...
ISBN: 978-3-6393-1893-7
Издательство:
Книга по требованию
Дата выхода: июль 2011
The consumption of cassava has dramatically increased in many countries as a source of energy in human diet. One of the major drawbacks of the cassava is high content of cyanogenic glucosides: the main toxic substance in cassava. Therefore, all cassava and cassava based products should be processed to suppress an adverse health effect that arises from cyanide toxicity as a result of cassava consumption. This book, therefore, provides first hand information about the effect of processing on the cyanide content of two cassava varieties commonly consumed in Ethiopia. Two cassava varieties were analyzed for their cyanide content. The outcome of analysis should help researchers and academicians or anyone else in the field of food science or...
ISBN: 978-3-6391-0861-3
Издательство:
Книга по требованию
Дата выхода: июль 2011
In the book, such methods of covariance estimation have been studied, which allow to make the measurement results more precise in case the observation data have different degrees of precision and are correlated. To compare the results of the measurements accomplished at different times, a test of the homogeneity of several correlation coefficients has been applied. It is a known fact that during the estimation of any output value it is impossible to be sure that the input values' correlation ratios can be neglected. Therefore, in practice any function under investigation has to be estimated with the use of sampled data and such methods of statistics estimation, which will specify the covariance of dependent variables. For example, if the...
ISBN: 978-3-6392-3561-6
Издательство:
Книга по требованию
Дата выхода: июль 2011
With increasing concerns of global warming and rising emissions, the asphalt industry is making a constant effort to lower the mixing and compaction temperatures of asphalt mixture without affecting the mix properties. Several proprietary chemicals are available in the industry that can help reduce the mixing and compaction temperatures. A significant reduction of required heat can be achieved in most cases. While some studies have been conducted to evaluate the properties of warm mix asphalt; properties of binders and mixtures, in fresh and aged conditions, containing these chemicals have not been studied in great detail. This research presents the results of tests conducted to evaluate the properties of warm asphalt binders and mixes,...
ISBN: 978-3-6392-7474-5
Издательство:
Книга по требованию
Дата выхода: июль 2011