Surface Tensions

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Surface Tensions

Author : Roberts, Nathan
Publisher : Hendrickson Publishers
Page : 217 pages
File Size : 44,7 Mb
Release : 2016-06-30
Category : Religion
ISBN : 9781619709140

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Surface Tensions by Roberts, Nathan Pdf

For some, our media-saturated culture points to the decline of Western civilization; for others, it points to the dawn of a bright future. For Nathan Roberts, the mediated landscape is a place to thoughtfully engage with these tensions. This unique memoir, meditative and philosophical, chronicles Nathan’s absorption in the vital, inspiring, and often maddening power of media and entertainment. With wry self-effacement and raw honesty, he calls us to conceive of media not only as an abstract, postmodern phenomenon, but as a digital architecture that creates real meeting space. Exploring social media, music, film, art, theater, standup comedy, and more, Nathan shows us a world of entertainment that reflects the universal hunger for connection.

Microscale Surface Tension and Its Applications

Author : Pierre Lambert,Massimo Mastrangeli
Publisher : MDPI
Page : 240 pages
File Size : 42,7 Mb
Release : 2019-10-21
Category : Technology & Engineering
ISBN : 9783039215645

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Microscale Surface Tension and Its Applications by Pierre Lambert,Massimo Mastrangeli Pdf

Building on advances in miniaturization and soft matter, surface tension effects are a major key to the development of soft/fluidic microrobotics. Benefiting from scaling laws, surface tension and capillary effects can enable sensing, actuation, adhesion, confinement, compliance, and other structural and functional properties necessary in micro- and nanosystems. Various applications are under development: microfluidic and lab-on-chip devices, soft gripping and manipulation of particles, colloidal and interfacial assemblies, fluidic/droplet mechatronics. The capillary action is ubiquitous in drops, bubbles and menisci, opening a broad spectrum of technological solutions and scientific investigations. Identified grand challenges to the establishment of fluidic microrobotics include mastering the dynamics of capillary effects, controlling the hysteresis arising from wetting and evaporation, improving the dispensing and handling of tiny droplets, and developing a mechatronic approach for the control and programming of surface tension effects. In this Special Issue of Micromachines, we invite contributions covering all aspects of microscale engineering relying on surface tension. Particularly, we welcome contributions on fundamentals or applications related to: Drop-botics: fluidic or surface tension-based micro/nanorobotics: capillary manipulation, gripping, and actuation, sensing, folding, propulsion and bio-inspired solutions; Control of surface tension effects: surface tension gradients, active surfactants, thermocapillarity, electrowetting, elastocapillarity; Handling of droplets, bubbles and liquid bridges: dispensing, confinement, displacement, stretching, rupture, evaporation; Capillary forces: modelling, measurement, simulation; Interfacial engineering: smart liquids, surface treatments; Interfacial fluidic and capillary assembly of colloids and devices; Biological applications of surface tension, including lab-on-chip and organ-on-chip systems.

Surface Tension and Related Thermodynamic Quantities of Aqueous Electrolyte Solutions

Author : Norihiro Matubayasi
Publisher : CRC Press
Page : 226 pages
File Size : 55,8 Mb
Release : 2013-09-09
Category : Science
ISBN : 9781439880876

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Surface Tension and Related Thermodynamic Quantities of Aqueous Electrolyte Solutions by Norihiro Matubayasi Pdf

Surface tension provides a thermodynamic avenue for analyzing systems in equilibrium and formulating phenomenological explanations for the behavior of constituent molecules in the surface region. While there are extensive experimental observations and established ideas regarding desorption of ions from the surfaces of aqueous salt solutions, a more successful discussion of the theory has recently emerged, which allows the quantitative calculation of the distribution of ions in the surface region. Surface Tension and Related Thermodynamic Quantities of Aqueous Electrolyte Solutions provides a detailed and systematic analysis of the properties of ions at the air/water interface. Unifying older and newer theories and measurements, this book emphasizes the contributions of simple ions to surface tension behavior, and the practical consequences. It begins with a general discussion on Gibbs surface thermodynamics, offering a guide to his theoretical insight and formulation of the boundary between fluids. The text then discusses the thermodynamic formulae that are useful for practical experimental work in the analysis of fluid/fluid interfaces. Chapters cover surface tension of pure water at air/water and air/oil interfaces, surface tension of solutions and the thermodynamic quantities associated with the adsorption and desorption of solutes, and surface tension of simple salt solutions. They also address adsorption of ions at the air/water interface, surface tension of solutions and the effect of temperature, adsorption from mixed electrolyte solutions, and thermodynamic properties of zwitterionic amino acids in the surface region. Focusing on the thermodynamic properties of ions at air/fluid interfaces, this book gives scientists a quantitative, rigorous, and objectively experimental methodology they can employ in their research.

Surface Tension and the Spreading of Liquids

Author : R. S. Burdon
Publisher : Cambridge University Press
Page : 113 pages
File Size : 44,9 Mb
Release : 2014-06-12
Category : Mathematics
ISBN : 9781107666573

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Surface Tension and the Spreading of Liquids by R. S. Burdon Pdf

First published in 1949, this book assesses the phenomena of surface tension and spreading for various liquids.

Surface-tension Measurements in Air of Liquid Lubricants to 200 ̊C by the Differential-maximum-bubble-pressure Technique

Author : William R. Jones (Jr.)
Publisher : Unknown
Page : 28 pages
File Size : 42,8 Mb
Release : 1971
Category : Heat
ISBN : UIUC:30112106639930

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Surface-tension Measurements in Air of Liquid Lubricants to 200 ̊C by the Differential-maximum-bubble-pressure Technique by William R. Jones (Jr.) Pdf

Differential-maximum-bubble-pressure apparatus used for surface tension measurements in air of liquid lubricants to 200 C.

Surface and Interfacial Tension

Author : Stanley Hartland
Publisher : CRC Press
Page : 633 pages
File Size : 53,9 Mb
Release : 2004-03-11
Category : Science
ISBN : 9780824751364

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Surface and Interfacial Tension by Stanley Hartland Pdf

This edited volume offers complete coverage of the latest theoretical, experimental, and computer-based data as summarized by leading international researchers. It promotes full understanding of the physical phenomena and mechanisms at work in surface and interfacial tensions and gradients, their direct impact on interface shape and movement, and their significance to numerous applications. Assessing methods for the accurate measurement of surface tension, interfacial tension, and contact angles, Surface and Interfacial Tension presents modern simulations of complex interfacial motions, such as bubble motion in liquids, and authoritatively illuminates bubble nucleation and detachment.

Measurement of Surface Tension

Author : Noah Ernest Dorsey
Publisher : Unknown
Page : 36 pages
File Size : 52,8 Mb
Release : 1926
Category : Surface tension
ISBN : UOM:39015086551754

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Measurement of Surface Tension by Noah Ernest Dorsey Pdf

The Enzymology of the Cell Surface Tension at the Cell Surface

Author : Aser Rothstein,Edmund N. Harvey
Publisher : Springer Science & Business Media
Page : 116 pages
File Size : 43,6 Mb
Release : 2012-12-06
Category : Science
ISBN : 9783709154496

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The Enzymology of the Cell Surface Tension at the Cell Surface by Aser Rothstein,Edmund N. Harvey Pdf

obvious properties, its structure, composition, electrical properties, me chanical properties, and most particularly, its permeability properties. None of these properties are obviously associated with surface enzymes. What are the functions of the cell surface that may require the presence of enzymes? From a purely hypothetical point of view, the cellular activities in which cell surface enzymes are potentially functional can be divided into two categories; first, those activities related to the production and maintenance of the cell surface structure itself, and second, those activities which are concerned with interactions between the cell and its environment. During growth of a cell, as it enlarges, new structural ma terial must be synthesized and assembled in the cell membrane. Although it is conceivable that new structural material is synthesized in the interior of the cell, it is difficult to visualize its complete synthesis and final assembly in the periphery of the cell, without the assistance of enzymes at the site. In the case of non-growing cells, although no net synthesis of new structural material is necessary, the turnover of the various components by a continuous degradation and resynthesis must be considered as a pos sibility.

Effect of Temperature and Impurities on Surface Tension of Crude Oil

Author : Stephen Gekwu Udeagbara
Publisher : Universal-Publishers
Page : 125 pages
File Size : 51,8 Mb
Release : 2010-07-30
Category : Surface chemistry
ISBN : 9781599423555

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Effect of Temperature and Impurities on Surface Tension of Crude Oil by Stephen Gekwu Udeagbara Pdf

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.

Surface Tension

Author : Julie Carr
Publisher : Deep Vellum Publishing
Page : 317 pages
File Size : 52,7 Mb
Release : 2013-04-23
Category : Literary Criticism
ISBN : 9781564788405

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Surface Tension by Julie Carr Pdf

Taking Dante Gabriel Rossetti, William Morris, and Gerard Manley Hopkins as its primary subjects, Surface Tension reveals how these later Victorian poets repeatedly imagine the aesthetic moment—charged, variegated, intensely focused—as capable of birthing a new, and newly redemptive, culture. Turning to contemporary experimental poets and theorists of poetry, such as Andrew Joron, Lisa Robertson, Christopher Nealon, and Joan Retallack, it goes on to reveal how our own poetry's fascination with complex surfaces and imagined social transformation has deep and under-recognized ties to Victorian concepts. Surface Tension offers new insights into the debt we owe to the most radical of the Victorians while yielding new understandings of how late Victorian poetry, even when least explicitly political, engages, and often re-envisions, the period's pressing anxieties about social progress, decadence, and revolution.

Surface Tension in Microsystems

Author : Pierre Lambert
Publisher : Springer Science & Business Media
Page : 327 pages
File Size : 48,6 Mb
Release : 2013-08-31
Category : Technology & Engineering
ISBN : 9783642375521

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Surface Tension in Microsystems by Pierre Lambert Pdf

This book describes how surface tension effects can be used by engineers to provide mechanical functions in miniaturized products (1 mm). Even if precursors of this field such as Jurin or Laplace already date back to the 18th century, describing surface tension effects from a mechanical perspective is very recent.brThe originality of this book is to consider the effects of capillary bridges on solids, including forces and torques exerted both statically and dynamically by the liquid along the 6 degrees-of-freedom.brIt provides a comprehensive approach to various applications, such as capillary adhesion (axial force), centering force in packaging and micro-assembly (lateral force) and recent developments such as a capillary motor (torque).

The Capillary Rise, Contact Angle, and Surface Tension of Potassium

Author : Lloyd Quarterman,William L. Primak
Publisher : Unknown
Page : 12 pages
File Size : 52,7 Mb
Release : 1949
Category : Potassium
ISBN : UOM:39015095080480

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The Capillary Rise, Contact Angle, and Surface Tension of Potassium by Lloyd Quarterman,William L. Primak Pdf