Titanium alloys are generally regarded as difficult- to-cut materials and plentiful research works have been conducted on their machinability in the past few decades with several diverse objectives, such as improvement on tool life, surface finish and surface integrity, investigation on chip and tool wear morphology, cutting force and vibration/chatter. This study introduces induction preheating as one of the new variable parameters to improve the machinability of titanium Ti-6Al-4V alloy. In the current work the influence of heating parameter i.e. preheating temperature, and the cutting variable, i.e. cutting speed, feed and axial depth of cut were investigated during end milling operation on a vertical machining center (VMC). The...

ISBN: 978-3-8383-7307-2
Издательство: Книга по требованию
Дата выхода: июль 2011

Dr. Yao is an associate professor at Institute of NanoEngineering and MicroSystems (NEMS), also an adjunct professor at Department of Power Mechanical Engineering and Department of Engineering System and Science, National Tsing Hua University, Taiwan. He was born at Taipei, Taiwan in 1969. He received his Ph.D. from department of Mechanical and Aerospace Engineering, University of California at Los Angeles (UCLA) in 2001. His dissertation was focused on the design and fabrication of in-plane MEMS thermoelectric microcooler (u-TEC), which can be used for cooling microchip locally or stabilizing temperature for bio-medical applications. His research scope is to combine his strong backgrounds (MEMS and thermal fluidics) on micro science...

ISBN: 978-3-8383-2308-4
Издательство: Книга по требованию
Дата выхода: июль 2011

Despite early acceptance of In-Situ Combustion by the industry, current reality indicates a decline in its selection and implementation as a preferred option for heavy oil recovery. This decline can be attributed to the notion that In-Situ Combustion is unreliable mainly due the failure of some high profile pilot and indeed commercial application of In-Situ Combustion. However a more pertinent reason for its decline is the generally low technical understanding of the principles, processes and practice of In-Situ Combustion. The objective of this monograph is to present a literature review of the principles, process and practice of In-Situ Combustion and to evaluate its suitability as a viable alternative to steam injection in reservoirs...

ISBN: 978-3-6392-5245-3
Издательство: Книга по требованию
Дата выхода: июль 2011

Present work investigates effects of application of different boundary layer control mechanisms on 2-D incompressible laminar flow around circular cylinder at different ?ow conditions. It focuses unsteady cases with its transient conditions. Unsteady Navier-Stokes equations are deployed. In tangential blowing from cylinder surface, both point blowing and span blowing are considered to study variations of lift, drag by varying blowing port positions and intensity of blowing. Effects on unsteadiness are also examined. In case of rotation of cylinder surface for controlling boundary layer, lift and drag are inves¬tigated by varying rotational speeds. Rotation has been found to have strong in?uence on ?ow and mode of vortex shedding gets...

ISBN: 978-3-6392-8894-0
Издательство: Книга по требованию
Дата выхода: июль 2011

India rubber and gutta percha: being a compilation of all the available information respecting the trees yielding these articles of commerce and their cultivation; with notes on the preparation and manufacture of rubber and gutta percha. Книга представляет собой репринтное издание 1887 года (издательство "Colombo, Ceylon"). Несмотря на то, что была проведена серьезная работа по восстановлению первоначального качества издания, на некоторых страницах могут обнаружиться небольшие "огрехи": помарки, кляксы и т.п. Данное...

ISBN: 978-1-275-00749-9
Издательство: Книга по требованию
Дата выхода: июль 2011

Induction hardening is a form of heat treatment in which a metal part is heated by induction heating and then quenched. The quenched metal undergoes a martensitic transformation, increasing the hardness and brittleness of the part. Induction hardening is used to selectively harden areas of a part or assembly without affecting the properties of the part as a whole. Данное издание не является оригинальным. Книга печатается по технологии принт-он-деманд после получения заказа.

ISBN: 978-6-1306-2123-0
Издательство: Книга по требованию
Дата выхода: июль 2011

Industrie petroliere. Petrole, Gaz naturel, Forage, Plate-forme petroliere, Porosite, Permeabilite (fluide), Viscosite, Distribution du petrole, Armateur, Bareme Worldscale, Reformage catalytique, Raffinage du petrole, Programmation lineaire, Recherche operationnelle, Petrochimie, Plan d'approvisionnement, de production et de distribution du petrole Данное издание не является оригинальным. Книга печатается по технологии принт-он-деманд после получения заказа.

ISBN: 978-6-1300-1967-9
Издательство: Книга по требованию
Дата выхода: июль 2011

Eine wirtschaftliche Produktion zeichnet sich vor allem dadurch aus, dass die erzielten Erlose die Kosten ubertreffen. Anhand von drei Massivholzmobel - Produktionen in verschiedenen Grossen wird diese Tatsache untersucht. Zusatzlich werden diese Produktionen noch an verschiedenen Standorten betrachtet. Die Unterschiede zwischen den Standorten, die Unterschiede in der produzierten Menge sowie deren Auswirkungen auf die Betriebsergebnisse kristallisieren sich heraus. Umso grosser die produzierte Menge, umso wirtschaftlicher ist die Produktion. Je gunstiger die Rahmenparameter am Standort, umso lohnenswerter ist die Investition. Die Grundlagen der Mobelbetriebe, die durchgefuhrten Berechungen und Analysen, sowie die Moglichkeiten der...

ISBN: 978-3-6392-4266-9
Издательство: Книга по требованию
Дата выхода: июль 2011

A major reason of low irrigation efficiency in the developing countries is inequitable distribution of water along the irrigation channels. Pakistan has the largest contiguous irrigation system in the world but the efficiency of this system is very low. The tertiary irrigation channels are operated on rotational basis,locally called the ‘Wara-bandi'. Commonly, farmers at tail-end of the irrigation channels receive less than their promised share of water mainly due to conveyance losses. This situation leads the farmers spend more money to pump groundwater for irrigation. This book includes the statistical techniques to quantify inequity of the water distribution. It also envisages methodology for an economic survey, and linkages between...

ISBN: 978-3-6392-7002-0
Издательство: Книга по требованию
Дата выхода: июль 2011

ISBN: 978-3-6393-0352-0
Издательство: Книга по требованию
Дата выхода: июль 2011

Stainless steel has numerous applications due to a good combination of properties such as corrosion and oxidation resistance, toughness, weldability and mechanical strength at high temperatures. However these properties and performance are strongly related to the microstructure and in the case of castings are mainly dependent of chemical composition and cooling rate. In this work the effect of these two factors was studied and the experimental results compared with theoretical models available in literature. Sixteen heats of different austenitic stainless steel were cast and their complete chemical compositions were determined. Most of analyzed heats showed the solidification mode type C. Ferrite values were found in the range from 0 to...

ISBN: 978-3-6392-5225-5
Издательство: Книга по требованию
Дата выхода: июль 2011

Die Influenza Impfstoffproduktion mit Saugetierzellen stellt einen moglichen Prozess zur Herstellung von Impfstoffen im industriellen Massstab dar, der zur verbesserten Vorbeugung einer drohenden Pandemie dienen konnte. Dieses Buch beschreibt die Etablierung eines Prozesses zur Influenza Virus Produktion mit adharenten Vero Zellen. Der Autor Christian Dietzsch gibt eine Einfuhrung uber Vero Zellen, Influenza Virus sowie mogliche Herstellungsverfahren mit unterschiedlichen Reaktorsystemen. Es werden Versuchsergebnisse bezuglich des Zellwachstums und der Virusproduktion in statischen und Microcarrier Zellkultursystemen aufgefuhrt. Hierbei wird der Einfluss verschiedener Parameter (Multiplicity of Infection, Trypsinkonzentration) bei der...

ISBN: 978-3-6390-3420-2
Издательство: Книга по требованию
Дата выхода: июль 2011

An injector, ejector, steam ejector, steam injector or thermocompressor is a pump-like device that uses the Venturi effect of a converging-diverging nozzle to convert the pressure energy of a motive fluid to velocity energy which creates a low pressure zone that draws in and entrains a suction fluid. After passing through the throat of the injector, the mixed fluid expands and the velocity is reduced which results in recompressing the mixed fluids by converting velocity energy back into pressure energy. The motive fluid may be a liquid, steam or any other gas. The entrained suction fluid may be a gas, a liquid, a slurry, or a dust-laden gas stream. Данное издание не является оригинальным. Книга...

ISBN: 978-6-1306-4071-2
Издательство: Книга по требованию
Дата выхода: июль 2011

In recent years, numerical and experimental investigations on the draft tube performance have confirmed the importance of the inlet swirling flow created by the runner vanes. The results indicate that it is still a challenge to get the optimal flow distribution at the draft tube inlet which gives the best machine performance over a range of operation points. Consequently, there is a need to adjust the runner-draft tube coupling to minimize the losses arising from the inlet flow distribution. This work focuses on establishing an automatic optimization method to improve the swirling flow characteristics at the draft tube inlet. The coupling of iSIGHT®, FLUENT® and MATLAB® commercial softwares has been performed to determine the best...

ISBN: 978-3-8433-5924-5
Издательство: Книга по требованию
Дата выхода: июль 2011

Optimization of large scaled structures under effect of dynamic loads is a difficult task because of very time consuming analysis as a result of high dimension calculation data in every cycle of optimization process. In this book, the Genetic Algorithm method has been used for optimization of a Jacket platform. Dynamic nature of forces that effect on the Jacket platform results in a time consuming analysis and so, a lengthy optimization process. In such cases, approximate analysis is a good solution. Therefore, the wave-net method has been used for approximate analysis. Wave-net method has been modified by combining the Back-Propagation neural network and wavelet theory. Wave-nets have been trained by several training sets. Then, the...

ISBN: 978-3-8433-7764-5
Издательство: Книга по требованию
Дата выхода: июль 2011

The accomplishment of the objectives of achieving a high safety level and reducing the cost through the reliance on Natural Circulation (NC) mechanisms requires a methodical understanding of those mechanisms and more particularly the instability phenomena. Instabilities occur generally due to external and internal disturbances. External disturbances include fluctuations in mass flow rate, fluctuations in inlet enthalpy, fluctuations in heat supply rate, etc. Internal disturbances include generally flow regime transitions. This requires specification of stable operating procedures, which in turn requires deeper understanding of the parametric trends. Therefore, the level of knowledge for the thermal-hydraulic phenomena for the specific...

ISBN: 978-3-8433-8016-4
Издательство: Книга по требованию
Дата выхода: июль 2011

ISBN: 978-6-1315-0511-9
Издательство: Книга по требованию
Дата выхода: июль 2011

The potential of stripper oil and gas fields for energy supply is large.With increasing energy demand, integrated reservoir studies, secondary and tertiary recovery, and infill drilling are becoming more common.The objective of this book was to optimize oil and gas production from stripper well fields.We integrated geologic and engineering data to build a detailed reservoir model for a stripper gas field.The objective was to provide insights to controls on gas production.For the stripper oil field,we evaluated the Green River formation of Monument Butte field,Utah. 3D geostatistical realizations were ranked using streamline simulation.Interwell connectivity vs well spacing was evaluated. A water-flood-only strategy provides more oil...

ISBN: 978-3-6392-2344-6
Издательство: Книга по требованию
Дата выхода: июль 2011

This book presents a sequential modelling approach for an integrated urban public transport planning. The methodology consists of three models viz. rail transit corridor identification, feeder route generation, and integrated scheduling models. The 1st model was developed to identify the new urban rail transit corridor using GIS, which is optimum from both users' and operators’ point of view. In the model for feeder route generation, the feeder routes are generated in two levels, the first level generates the initial set of shortest paths and in the second level, search is made around these corridors to select one route combination out of all possible routing configurations. The integrated scheduling model consists of two sub-models;...

ISBN: 978-3-6392-4230-0
Издательство: Книга по требованию
Дата выхода: июль 2011

Micropumping has emerged as a critical research area for many electronics and biological applications. A significant driving force behind this research has been integration of pumping mechanisms into micro Total Analysis Systems (?TAS) or similar multi-functional analysis techniques. However, electronics packaging, micromixing and microdosing systems, among others, have also exploited micropumping concepts. This work commences with a comprehensive review of the recent advances in micropump technologies. Quantitative comparison tables of various micropumping techniques are listed as tabular data for ready comparison. Of the micropumping techniques available, electrohydrodynamic (EHD) pumping is identified and explored for its viability in...

ISBN: 978-3-8383-5407-1
Издательство: Книга по требованию
Дата выхода: июль 2011

High Quality Content by WIKIPEDIA articles! Integrated Logistics Support is the disciplined and unified management of the technical logistic disciplines that plan and develop Logistics Support Requirements for military forces and which will ensure System product Quality in terms of reliability, availability, maintainability and testability . ILS is sometimes integrated with System Safety engineering. In general, this means that ILS is the management organization that plans and directs the activities of many technical disciplines associated with the identification and development of logistics support and system RAMT/S requirements for military systems or equipment / parts. There are comparable organizations outside the military which...

ISBN: 978-6-1316-3453-6
Издательство: Книга по требованию
Дата выхода: июль 2011

It is clearly desirable that understanding of the water-structure interaction of integral bridge abutments, piers and pile group is better enhanced as integral bridges being built in recent years in Malaysia are increasing in number. Construction of integral bridges is proven to be a cost effective that reduces initial construction cost, and long-term maintenance expenses. Integral bridges are alternatively referred to as rigid-frame bridges. Early researches, mostly concentrate on conventional bridge structures only. Investigations focus on the scour depth on the piers or abutments separately. Since the concept of integral bridge is comparable to portal frame; there is a need to combine superstructure and substructure together in two...

ISBN: 978-3-6392-5987-2
Издательство: Книга по требованию
Дата выхода: июль 2011

Strength of materials problems have been classified into determinate and indeterminate problems. Determinate analysis primarily based on the equilibrium concept is well understood. Solutions of indeterminate problems required additional compatibility conditions, and its comprehension was not exclusive. A solution to indeterminate problem is generated by manipulating the equilibrium concept, either by rewriting in the displacement variables or through the ‘cutting and closing gap' technique of the redundant force method. Compatibility improvisation has made analysis cumbersome. The author has researched and understood the compatibility theory. Solutions can be generated with equal emphasis on the equilibrium and compatibility concepts....

ISBN: 978-3-8383-8107-7
Издательство: Книга по требованию
Дата выхода: июль 2011

In this work, an object-oriented event-state spatiotemporal data model for 4D city environment is presented with the focus on 3D building objects that change over time. In the data model, the coherent relations between events and objects are considered. Events are bound to objects and can be described with respect to the hierarchy of the involved objects. Furthermore,algorithms for spatiotemporal generalization are proposed which is composed of event generalization and 3D spatial generalization. Данное издание не является оригинальным. Книга печатается по технологии принт-он-деманд после получения заказа.

ISBN: 978-3-8381-2298-4
Издательство: Книга по требованию
Дата выхода: июль 2011

In this book, several intelligent data dependent (IDD) approaches are applied to relevant modeling problems in the classification, simulation, and control of traffic flow. The studies cover a wide range of traffic flow systems including the analyses of freeway mainline flow, freeway ramp metering system, roadway flow disperson between intersections, and flow simulations at signalized and unsignalized intersections. Most of the proposed approaches reflect recent and advanced technologies in relevant research fields (e.g. computer science, control engineering), which are intelligent and robust to the changing physical environments. The structures and parameters are determined based on surveyed or simulated data sets. Compared with the...

ISBN: 978-3-8383-2906-2
Издательство: Книга по требованию
Дата выхода: июль 2011