Xem 1-20 trên 47 kết quả Numerical investigation
  • Due to the enormous progress in computer technology and numerical methods that have been achieved in recent years, the use of numerical simulation methods in industry gains more and more importance. In particular, this applies to all engineering disciplines. Numerical computations in many cases offer a cost effective and, therefore, very attractive possibility for the investigation and optimization of products and processes.

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  • The subject of acoustic waves might easily be considered a mature one, quite specialized, with narrow and circumscribed fields of interest and of application. The present book is an evidence of the opposite: it witnesses how the concept of acoustic wave, a collective displacement of matter which perturbs an equilibrium configuration, is a pervasive concept, which emerges in very different fields. This type of phenomena can be analyzed from different points of view, it can be exploited in different ways, and is the object of active investigations.

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  • This book collects original and innovative research studies concerning modeling and simulation of physical systems in a very wide range of applications, encompassing micro-electro-mechanical systems, measurement instrumentations, catalytic reactors, biomechanical applications, biological and chemical sensors, magnetosensitive materials, silicon photonic devices, electronic devices, optical fibers, electro-microfluidic systems, composite materials, fuel cells, indoor air-conditioning systems, active magnetic levitation systems and more.

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  • Morphology change at tidal influent estuary is controlled by the net sediment transport rate of river and tidal transport, and variations in features (bathymetry, structures, etc.) where scour and shoaling take place. To examine river and tidal exchange sediment transport in a systematic way, we investigated sediment transportation at the Bach Dang estuary with a coupled tide, wave and sediment transport-morphology change numerical modeling system. Five simulations consisting of

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  • A significant amount of time has passed since I first put this effort together. Much has changed in Numerical Analysis. Researchers now seem often content to rely on packages prepared by others even more than they did a decade ago. Perhaps this is the price to be paid by tackling increasingly ambitious problems. Also the advent of very fast and cheap computers has enabled investigators to use inefficient methods and still obtain answers in a timely fashion.

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  • The analysis model of a structure includes nodes (joints), elements and boundary conditions. Finite elements are used in data entry, representing members of the structure for numerical analysis, and nodes define the locations of such members. Boundary conditions represent the status of connections between the structure and neighboring structures such as foundations. A structural analysis refers to mathematical simulations of a numerical analysis model of a structure.

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  • The mitigation of earthquake-related hazards represents a key role in the modern society. The mitigation of such kind of hazards spans from detailed studies on seismicity, evaluation of site effects, and seismo-induced landslides, tsunamis as well as and the design and analysis of structures to resist such actions. The study of earthquakes ties together science, technology and expertise in infrastructure and engineering in an effort to minimize human and material losses when they inevitably occur.

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  • The questionnaire (survey) is a useful tool for Tyne and Wear University (TWU) to access and justify the success of the safety bus. In order to collect the greatest number of respondents with accurate response, the university need to design and distribute the effective questionnaire. The reason for choosing the questionnaire is caused by several advantages it brings to the business. According to Robson, Pemberton and McGrane (2011), the questionnaire seems to cover a numerous people, so, it increases the sample size....

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  • The title of this book, Wireless Power Transfer: Principles and Engineering Explorations, encompasses theory and engineering technology, which are of interest for diverse classes of wireless power transfer. This book is a collection of contemporary research and developments in the area of wireless power transfer technology. It consists of 13 chapters that focus on interesting topics of wireless power links, and several system issues in which analytical methodologies, numerical simulation techniques, measurement techniques and methods, and applicable examples are investigated....

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  • Nucleate pool boiling is a daily phenomenon transferring effectively high heat flux. It is, however, a very complex and illusive process because of the interrelation of numerous factors and effects as the nucleate process, the growth of the bubbles, the interaction between the heater’s surface with liquid and vapor, the evaporation process at the liquidvapor interface, and the transport process of vapour and hot liquid away from the heater’s surface.

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  • With the amazing advances of scientific research, Hydrodynamics - Theory and Application presents the engineering applications of hydrodynamics from many countries around the world. A wide range of topics are covered in this book, including the theoretical, experimental, and numerical investigations on various subjects related to hydrodynamic problems. The book consists of twelve chapters, each of which is edited separately and deals with a specific topic. The book is intended to be a useful reference to the readers who are working in this field....

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  • In this book, a wide range of different topics related to analytical as well as numerical solutions of problems related to scattering, propagation, radiation, and emission in different medium are discussed. Design of several devices and their measurements aspects are introduced. Topics related to microwave region as well as Terahertz and quasi-optical region are considered. Bi-isotropic metamaterial in optical region is investigated.

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  • To discuss embryological thought in seventeenth-century England is to discuss the main currents in embryological thought at a time when those currents were both numerous and shifting. Like every other period, the seventeenth century was one of transition. It was an era of explosive growth in scientific ideas and techniques, suffused with a creative urge engendered by new philosophical insights and the excitement of discovery.

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  • Tham khảo sách 'acoustic waves – from microdevices to helioseismology_2', kỹ thuật - công nghệ, kĩ thuật viễn thông phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả

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  • Bianco et al. Nanoscale Research Letters 2011, 6:252 http://www.nanoscalereslett.com/content/6/1/252 NANO IDEA Open Access Enhancement of heat transfer and entropy generation analysis of nanofluids turbulent convection flow in square section tubes Vincenzo Bianco, Sergio Nardini and Oronzio Manca* Abstract In this article, developing turbulent forced convection flow of a water-Al2O3 nanofluid in a square tube, subjected to constant and uniform wall heat flux, is numerically investigated.

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  • Given the large number of ways, one can contribute (directly and indi- rectly) to a thesis that reflects four years of work, I have to thank numerous people for their help. Therefore, it is quite obvious that this foreword can only reflect the most important contributions to my work. First of all, I would like to thank my supervisor, Prof. Martin T. Bohl for his contribution to this thesis. His ongoing support and the various insights he provided were a great help to my research. I also appreciate the freedom I had and his confidence in my work.

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  • Ca 2+ and cAMP are ubiquitous second messengers in euk-aryotes and control numerous physiological responses ran-ging fromfertilization to cell death induction 1 . Todistinguish between these different responses, their subtle regulation in time, space and amplitude is needed. Therefore, the char-acterization of the signalling process requires measurement of secondmessengers with tools of precise localization, high dynamic range and as little disturbance of cell physiology as possible.

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  • Metabolite channelling, the process in which consecutive enzymes have confined substrate transfer in metabolic pathways, has been proposed as a biochemical mechanism that has evolved because it enhances catalytic rates and protects unstable intermediates. Results from experiments on the synthesis of radioactive urea [Cheung, C., Cohen, N.S. & Raijman, L (1989)J. Biol. Chem.264, 4038–4044] have been interpreted as implying channelling of arginine between argininosuccinate lyase and arginase in permeabi-lized hepatocytes. ...

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  • Phosphorylation of RNA polymerase II’s largest subunit C-terminal domain (CTD) is a key event during mRNA metabolism. Numerous enzymes, including cell cycle-dependent kinases and TFIIF-dependent phosphatases tar-get the CTD. However, the repetitive nature of the CTD prevents determination of phosphorylated sites by conven-tional biochemistry methods. Fortunately, a panel of monoclonal antibodies is available that distinguishes between phosphorylated isoforms of RNA polymerase II’s (RNAP II) largest subunit....

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  • In addition to local periodontal tissue involvement, chronic infection of the periodontium together with continuous up-regulation of pro-inflammatory responses and immune mediators may contribute to systemic sequel including diabetes, preterm delivery of lowweight birth babies, lung inflammation, arthritis and cardiovascular diseases (CVD).

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