Smart Sensors for Real-Time Water Quality Monitoring (Smart Sensors, Measurement and Instrumentation)
Author: Subhas C Mukhopadhyay and Alex Mason | Size: 11 MB | Format:PDF | Quality:Unspecified | Publisher: Springer | Year: 2013 | pages: 300 | ISBN: 3642370055
Sensors are being utilized to increasing degrees in all forms of industry. Researchers and industrial practitioners in all fields seek to obtain a better understanding of appropriate processes so as to improve quality of service and efficiency. The quality of water is no exception, and the water industry is faced with a wide array of water quality issues being present world-wide.
Thus, the need for sensors to tackle this diverse subject is paramount. The aim of this book is to combine, for the first time, international expertise in the area of water quality monitoring using smart sensors and systems in order that a better understanding of the challenges faced and solutions posed may be available to all in a single text.
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DYNAMIC RESPONSE OF CIRCULAR PLATES ON ELASTIC FOUNDATION SUBJECTED TO SONIC BOOMS
Author: ANESH SIRCAR, Department of Mathematics, Regional Engineering College, Durgapur 9 (Communicated by F. C. Auluck, (Received 2 November 1972; alter revision 2 April 1973) | Size: 0.55 MB | Format:PDF | Quality:Unspecified | Year: 1972 | pages: 9
The dynamic response of circular plates resting on elastic foundation subjected
to an N-shaped pressure pulse resulting from a sonic boom is presented here.
Case of a plate supported on Winkler type foundation is considered and solution
obtained. The solution is given for a plate restrained at the outer
boundary by means of supports which resist elastically both the transverse
displacements and rotations. The plate is analysed according to classical
plate theory, neglecting rotatory inertia and shear strains.
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Author: SHAMSHER PRAKASH VIJAY K. PURI Professor Emeritus Professor Civil, Architecture and Environmental Civil and Environmental Engineering Engineering Southern Illinois University University of Missouri Rolla Carbondale, IL, USA Rolla, MO, USA | Size: 0.86 MB | Format:PDF | Quality:Unspecified | Publisher: Journal of Structural Engineering, SERC, Madras. INDIA | Year: April-May 2006, | pages: 39
The paper discusses the methods of analysis for determining the response of foundations subjected to vibratory loads. The design of a machine foundation is generally made by idealizing the foundation- soil system as spring-mass –dashpot model having one or two degrees of freedom. Most machine foundations are treated as surface footing and the soil spring and damping values are determined using the elastic-half space analog. The spring and damping values for response of embedded foundations can also be determined from the elastic half space concept as per Novak‟s work. The soil spring and damping values can also be obtained following the impedance –compliance function approach. The paper also presents a brief discussion of the predicted and observed response of machine foundations .
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FOUNDATIONS FOR INDUSTRIAL MACHINES AND EARTHQUAKE EFFECTS
Author: K.G. Bhatia Center for Applied Dynamics D-CAD Technologies, New Delhi | Size: 0.36 MB | Format:PDF | Quality:Unspecified | Publisher: ISET Journal of Earthquake Technology, Paper No. 495, Vol. 45, No. 1-2, March-June 2008, pp. 13–29 | Year: june2008 | pages: 17
Improvement in manufacturing technology has provided machines of higher ratings with better tolerances and controlled behaviour. These machines give rise to considerably higher dynamic forces and thereby higher stresses and, in return, demand improved performance and safety leaving no room for failures. This paper highlights need for a better interaction between foundation designer and machine manufacturer to ensure improved machine performance. The paper also describes the design aids/methodologies for foundation design. Various issues related to mathematical modeling and interpretations of results are discussed at length. Intricacies of designing vibration isolation system for
heavy-duty machines are also discussed. Influences of dynamic characteristics of foundation elements, viz., beams, columns, and pedestals etc. on the response of machine, along with some case studies, are also presented. The paper also touches upon the effects of earthquakes on machines as well as on their foundations. Use of commercially available finite element packages, for analysis and design of the foundation, is strongly recommended, but with caution.
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Geochemical modeling is an important tool in environmental studies, and in the areas of subsurface and surface hydrology, pedology, water resources management, mining geology, geothermal resources, hydrocarbon geology, and related areas dealing with the exploration and extraction of natural resources.
The book fills a gap in the literature through its discussion of geochemical modeling, which simulates the chemical and physical processes affecting the distribution of chemical species in liquid, gas, and solid phases. Geochemical modeling applies to a diversity of subsurface environments, from the vadose zone close to the Earth’s surface, down to deep-seated geothermal reservoirs.
This book provides the fundamental thermodynamic concepts of liquid-gas-solid phase systems. It introduces the principal types of geochemical models, such as speciation, reaction-path or forward, inverse- and reactive-transport models, together with examples of the most common codes and the best-practices for constructing geochemical models. The physical laws describing homogeneous and heterogeneous chemical reactions, their kinetics, and the transport of reactive solutes are presented. The partial differential or algebraic equations representing these laws, and the principal numerical methods that allow approximate solutions of these equations that can provide useful solutions to model different geochemical processes, are discussed in detail. Case studies applying geochemical models in different scientific areas and environmental settings, conclude the book.
The book is addressed to students, teachers, other professionals, and to the institutions involved in water, geothermal and hydrocarbon resources, mining, and environmental management. The book should prove useful to undergraduate and graduate students, postgraduates, professional geologists and geophysicists, engineers, environmental scientists, soil scientists, hydrochemists, and others interested in water and geochemistry.
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The main geometric parameters of curved highway bridges are studied in this dissertation and two analysis methods are developed for which general computer programs are written. On the basis of the new finite element method and the finite strip method of analysis, the behavior of curved girder bridges is studied and design recommendations are presented.
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Drilling and Completion in Petroleum Engineering: Theory and Numerical Applications (Multiphysics Modeling)
Author: Xinpu Shen, Mao Bai and William Standifird | Size: 11.4 MB | Format:PDF | Quality:Unspecified | Publisher: CRC Press | Year: 2011 | pages: 254 | ISBN: 0415665272
Modern petroleum and petrotechnical engineering is increasingly challenging due to the inherently scarce and decreasing number of global petroleum resources. Exploiting these resources efficiently will require researchers, scientists, engineers and other practitioners to develop innovative mathematical solutions to serve as basis for new asset development designs. Deploying these systems in numerical models is essential to the future success and efficiency of the petroleum industry.
Multiphysics modeling has been widely applied in the petroleum industry since the 1960s. The rapid development of computer technology has enabled the numerical applications of multiphysics modeling in the petroleum industry: its applications are particularly popular for the numerical simulation of drilling and completion processes. This book covers theory and numerical applications of multiphysical modeling presenting various author-developed subroutines, used to address complex pore pressure input, complex initial geo-stress field input, etc. Some innovative methods in drilling and completion developed by the authors, such as trajectory optimization and a 3-dimensional workflow for calculation of mud weight window etc, are also presented. Detailed explanations are provided for the modeling process of each application example included in the book. In addition, details of the completed numerical models data are presented as supporting material which can be downloaded from the website of the publisher. Readers can easily understand key modeling techniques with the theory of multiphysics embedded in examples of applications,and can use the data to reproduce the results presented.
While this book would be of interest to any student, academic or professional practitioner of engineering, mathematics and natural science, we believe those professionals and academics working in civil engineering, petroleum engineering and petroleum geomechanics would find the work especially relevant to their endeavors.
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