Surface Effects in Magnetic Nanoparticles

Surface Effects in Magnetic Nanoparticles PDF

Author: Dino Fiorani

Publisher: Springer Science & Business Media

Published: 2006-06-09

Total Pages: 309

ISBN-13: 0387260188

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A collection of articles on different approaches to the investigation of surface effects on nanosized magnetic materials, with special emphasis on magnetic nanoparticles. The book provides an overview of progress in the field through recent results.

Surface Effects in Solid Mechanics

Surface Effects in Solid Mechanics PDF

Author: Holm Altenbach

Publisher: Springer Science & Business Media

Published: 2013-03-12

Total Pages: 200

ISBN-13: 3642357830

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This book summarizes the actual state of the art and future trends of surface effects in solid mechanics. Surface effects are more and more important in the precise description of the behavior of advanced materials. One of the reasons for this is the well-known from the experiments fact that the mechanical properties are significantly influenced if the structural size is very small like, for example, nanostructures. In this book, various authors study the influence of surface effects in the elasticity, plasticity, viscoelasticity. In addition, the authors discuss all important different approaches to model such effects. These are based on various theoretical frameworks such as continuum theories or molecular modeling. The book also presents applications of the modeling approaches.

The Surface Wettability Effect on Phase Change

The Surface Wettability Effect on Phase Change PDF

Author: Marco Marengo

Publisher: Springer Nature

Published: 2021-10-30

Total Pages: 390

ISBN-13: 3030829928

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The Surface Wettability Effect on Phase Change collects high level contributions from internationally recognised scientists in the field. It thoroughly explores surface wettability, with topics spanning from the physics of phase change, physics of nucleation, mesoscale modeling, analysis of phenomena such drop evaporation, boiling, local heat flux at triple line, Leidenfrost, dropwise condensation, heat transfer enhancement, freezing, icing. All the topics are treated by discussing experimental results, mathematical modeling and numerical simulations. In particular, the numerical methods look at direct numerical simulations in the framework of VOF simulations, phase-field simulations and molecular dynamics. An introduction to equilibrium and non-equilibrium thermodynamics of phase change, wetting phenomena, liquid interfaces, numerical simulation of wetting phenomena and phase change is offered for readers who are less familiar in the field. This book will be of interest to researchers, academics, engineers, and postgraduate students working in the area of thermofluids, thermal management, and surface technology.

Surfaces and Interfaces II

Surfaces and Interfaces II PDF

Author: John Burke

Publisher: Springer Science & Business Media

Published: 2013-03-09

Total Pages: 493

ISBN-13: 1475701780

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The Army Materials and Mechanics Research Center has conducted the Sagamore Army Materials Research Conferences, in cooperation with the Metallurgical Research Laboratories of the Department of Chemical Engineering and Metallurgy of Syracuse University, since 1954. The purpose of the conferences has been to gather together scientists and engineers from academic institutions, industry, and government who are uniquely qualified to explore in depth a subject of importance to the Army, the Department of Defense and the scientific corr.munity. This volume, Surfaces and Interfaces ll: Physical and Mechanical Properties, can be considered a continuation, or perhaps an extension, of the information contained in Surfaces and Interfaces I: Chemical and Physical Characteristics. The emphasis in this volume is focused on: the technological significance of surfaces and interfaces; surface sensitive mechanical properties; environment-sensitive properties; control of grain structure; and composite materials. It is felt that the rather ambitious undertaking of the program committee to place the role of "surfaces and interfaces" in its proper context has been achieved. The balance between basic research findings and more applied research allows the reader a certain degree of latitude in the use of the two volumes. The continued active interest and support of these conferences by Col. C. T. Riordan, Commanding Officer, Dr. E. Scala, Technical Di rector, and J. F. Sullivan, Deputy Technical Director, of the Army Materials and Mechanics Research Center is appreciated.

Effect of Temperature and Impurities on Surface Tension of Crude Oil

Effect of Temperature and Impurities on Surface Tension of Crude Oil PDF

Author: Stephen Gekwu Udeagbara

Publisher: Universal-Publishers

Published: 2010-07-30

Total Pages: 125

ISBN-13: 1599423553

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Surface tension is one of the major issues encountered in the oil industry. This study investigated the laboratory effect of temperature and impurities on surface tension of crude oil samples and water. The aforementioned tests were carried out (in line with industrial standard) on the samples in order to determine the relationship between surface tension, temperature and impurities and also to compare the variation in the measured property due to temperature and impurities. Prediction equations were also built. The results show that surface tension decreases with an increase in temperature in the crude oil samples, water and detergent, while there was an increment in the presence of salt and bentonite as the concentrations increase. We also observed that surface tension increases with water-in-oil emulsion. Also, we see a strong relationship between temperature, impurities and the measured property (surface tension) with an r2 value range of 0.7441 to 0.8638 in all the tests carried out. This study utilized graphic and statistical illustrations to highlight the effect of temperature and impurities on the investigated property and the corresponding effect in the oil industry. The collective and individual relationship between the independent and dependent variable was highlighted and variations were scientifically explained. The prediction equations serve as a quick guide to reservoir engineers to determine the variation in the measured property from other samples of crude oil and water.