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Particulate Morphology

Particulate Morphology
Mathematics Applied to Particle Assemblies

by Keishi Gotoh

  • Publisher : Elsevier
  • Release : 2012
  • Pages : 85
  • ISBN : 0123969743
  • Language : En, Es, Fr & De
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Encompassing over fifty years of research, Professor Gotoh addresses the correlation function of spatial structures and the statistical geometry of random particle assemblies. In this book morphological study is formed into random particle assemblies to which various mathematics are applied such as correlation function, radial distribution function and statistical geometry. This leads to the general comparison between the thermodynamic state such as gases and liquids and the random particle assemblies. Although structures of molecular configurations change at every moment due to thermal vibration, liquids can be regarded as random packing of particles. Similarly, gaseous states correspond to particle dispersion. If physical and chemical properties are taken away from the subject, the remainder is the structure itself. Hence, the structural study is ubiquitous and of fundamental importance. This book will prove useful to chemical engineers working on powder technology as well as mathematicians interested in learning more about the subject. Concisely explains various mathematics and tools applied to the subject. Incorporates multiple fields to give a clear view of the application of mathematics in powder technology.

Advanced Particulate Morphology

Advanced Particulate Morphology
A Book

by John Keith Beddow

  • Publisher : CRC Press
  • Release : 2018-01-18
  • Pages : 200
  • ISBN : 1351077996
  • Language : En, Es, Fr & De
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This volume, based on the 1977 NSF Residential Advanced Particle Morphology Workshop, covers the principle developments in this new and rapidly evolving field. The divergent fields of interst of the authors reflect the prosepcts for the wide application of particle morphology analysis and include: many branches of science and engineering concerned with fine particles, information processing, life sciences, pharmacy, and food technology.

Advanced Particulate Morphology Proceedings

Advanced Particulate Morphology Proceedings
A Book

by Anonim

  • Publisher : Unknown Publisher
  • Release : 1980
  • Pages : 187
  • ISBN : 9876543210XXX
  • Language : En, Es, Fr & De
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Impact of Rail Pressure and Biodiesel Fueling on the Particulate Morphology and Soot Nanostructures from a Common-rail Turbocharged Direct Injection Diesel Engine

Impact of Rail Pressure and Biodiesel Fueling on the Particulate Morphology and Soot Nanostructures from a Common-rail Turbocharged Direct Injection Diesel Engine
A Book

by Anonim

  • Publisher : Unknown Publisher
  • Release : 2014
  • Pages : 5
  • ISBN : 9876543210XXX
  • Language : En, Es, Fr & De
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The effect of rail pressure and biodiesel fueling on the morphology of exhaust particulate agglomerates and the nanostructure of primary particles (soot) was investigated with a common-rail turbocharged direct injection diesel engine. The engine was operated at steady state on a dynamometer running at moderate speed with both low (30%) and medium-high (60%) fixed loads, and exhaust particulate was sampled for analysis. Ultra-low sulfur diesel and its 20% v/v blends with soybean methyl ester biodiesel were used. Fuel injection occurred in a single event around top dead center at three different injection pressures. Exhaust particulate samples were characterized with TEM imaging, scanning mobility particle sizing, thermogravimetric analysis, Raman spectroscopy, and XRD analysis. Particulate morphology and oxidative reactivity were found to vary significantly with rail pressure and with biodiesel blend level. Higher biodiesel content led to increases in the primary particle size and oxidative reactivity but did not affect nanoscale disorder in the as-received samples. For particulates generated with higher injection pressures, the initial oxidative reactivity increased, but there was no detectable correlation with primary particle size or nanoscale disorder.

A Statistical Analysis of Coal Particulate Morphology

A Statistical Analysis of Coal Particulate Morphology
A Book

by David Joseph Duncan

  • Publisher : Unknown Publisher
  • Release : 1981
  • Pages : 174
  • ISBN : 9876543210XXX
  • Language : En, Es, Fr & De
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Characterization of Particulate Morphology, Nanostructures, and Sizes in Low-Temperature Combustion with Biofuels

Characterization of Particulate Morphology, Nanostructures, and Sizes in Low-Temperature Combustion with Biofuels
A Book

by HeeJe Seong

  • Publisher : Unknown Publisher
  • Release : 2012
  • Pages : 14
  • ISBN : 9876543210XXX
  • Language : En, Es, Fr & De
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Morphology of Crystals

Morphology of Crystals
Part A: Fundamentals Part B: Fine Particles, Minerals and Snow Part C: The Geometry of Crystal Growth by Jaap van Suchtelen

by Ichiro Sunagawa

  • Publisher : Springer Science & Business Media
  • Release : 1995-07-31
  • Pages : 420
  • ISBN : 9780792335924
  • Language : En, Es, Fr & De
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The molecular mechanisms underlying the fact that a crystal can take a variety of external forms is something we have come to understand only in the last few decades. This is due to recent developments in theoretical and experimental investigations of crystal growth mechanisms. Morphology of Crystals is divided into three separately available volumes. Part A contains chapters on roughening transition; equilibrium form; step pattern theory; modern PBC; and surface microtopography. This part provides essentially theoretical treatments of the problem, particularly the solid-liquid interface. Part B contains chapters on ultra-fine particles; minerals; transition from polyhedral to dendrite; theory of dendrite; and snow crystals. All chapters are written by world leaders in their respective areas, and some can be seen as representing the essence of a life's work. This is the first English-language work which covers all aspects of the morphology of crystals - a topic which has attracted top scientific minds for centuries. As such, it is indispensable for anyone seeking an answer to a question relating to this fascinating problem: mineralogists, petrologists, crystallographers, materials scientists, workers in solid-state physics and chemistry, etc. In Parts A: Fundamentals and B: Fine Particles, Minerals and Snow equilibrium and kinetic properties of crystals are generally approached from an `atomistic' point of view. In contrast, Part C: The Geometry of Crystal Growth follows the alternative and complementary `geometrical' description, where bulk phases are considered as continuous media and their interfaces as mathematical surfaces with orientation-dependent properties. Equations of motion for a crystal surface are expressed in terms of vector and tensor operators working on surface free energy and growth rate, both expressed as functions of surface orientation and driving force, or `affinity' for growth. This approach emphasizes the interrelation between equilibrium and kinetic behavior. Part 1 establishes the theoretical framework. Part 2 gives a construction toolbox for explicit (analytic) functions. An extra chapter is devoted to experimental techniques for measuring such functions: a new approach to sphere growth experiments. The emphasis throughout is on principles and new concepts. Audience: Advanced readers familiar with traditional aspects of crystal growth theory. Can be used as the basis for an advanced course, provided supplementation is provided in the areas of atomistic models of the advancing surface, diffusion fields, etc.

Characterization of Particulate Matter Morphology and Volatility for Two Direct-injection Engines

Characterization of Particulate Matter Morphology and Volatility for Two Direct-injection Engines
A Book

by Brian M. Graves

  • Publisher : Unknown Publisher
  • Release : 2015
  • Pages : 106
  • ISBN : 9876543210XXX
  • Language : En, Es, Fr & De
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Particulate matter emitted from two direct injection engines has been characterized by morphology, volatility, mass-mobility exponent, effective density, and size distribution using tandem measurements from a centrifugal particle mass analyzer (CPMA) and differential mobility analyzers (DMA). The engines consisted of a heavy duty, natural gas, compression ignition engine fitted with a high pressure direct injection (HPDI) system, and a four cylinder gasoline direct injection (GDI) engine fueled with gasoline and ethanol blends. The HPDI engine was tested at six conditions which varied load, speed, EGR fraction, and fuel delivery strategy. The GDI was tested at three engine loads at 2250 RPM (4%, 13%, and 26% of maximum load) in addition to an idle condition, while it was fueled using gasoline mixed with ethanol fractions of 0% (E0), 10% (E10), and 50% (E50) by volume. An increase in engine load increased particle number concentration for both engines, but the GDI idle condition produced approximately as many particles as at 13% load. An increase in ethanol fraction in the GDI decreased number concentration, but E10 produced more particles than E0 at idle and 26% load. HPDI size distributions were log-normal whereas GDI size distributions were not log-normal and were instead skewed. The fraction of the number of purely volatile particles to total number of particles (number volatile fraction, fN) for the HPDI engine decreased as load increased, although the low-speed, partially premixed mode had the lowest fN. The fN for the GDI both overall and as a function of particle mobility-equivalent diameter was under 10 percent at all engine conditions and fuels. The size-segregated ratio of the mass of internally mixed volatile material to total particle mass (fm) was similarly low for the GDI. The fm for the HPDI was higher; however it decreased with an increase in load and with particle mobility-equivalent diameter. HPDI effective density was seen to collapse to approximately a single line, but engine modes with higher fm values had slightly higher effective densities suggesting that the soot structures have collapsed into more dense shapes. Effective density and mass-mobility exponent for the GDI engine increased with load. Effective density decreased with an increase in ethanol fraction and a slight decrease in mass-mobility exponent was also observed for all conditions except idle. Effective density trends from both engines were compared to data from other GDI engines, a port fuel injection engine, and diesels, and the data is relatively similar between all engine types, with 90% of data points being within ±27% of a common trend line.

Characterization of the Effects of Re-suspension Technique on Particulate Matter Morphology Through the Use of Scanning Electron Microscopy

Characterization of the Effects of Re-suspension Technique on Particulate Matter Morphology Through the Use of Scanning Electron Microscopy
A Book

by Amber Rose Hottes

  • Publisher : Unknown Publisher
  • Release : 2002
  • Pages : 126
  • ISBN : 9876543210XXX
  • Language : En, Es, Fr & De
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Engine Exhaust Particulates

Engine Exhaust Particulates
A Book

by Avinash Kumar Agarwal,Atul Dhar,Nikhil Sharma,Pravesh Chandra Shukla

  • Publisher : Springer
  • Release : 2018-11-01
  • Pages : 266
  • ISBN : 9811332991
  • Language : En, Es, Fr & De
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This book provides a comparative analysis of both diesel and gasoline engine particulates, and also of the emissions resulting from the use of alternative fuels. Written by respected experts, it offers comprehensive insights into motor vehicle particulates, their formation, composition, location, measurement, characterisation and toxicology. It also addresses exhaust-gas treatment and legal, measurement-related and technological advancements concerning emissions. The book will serve as a valuable resource for academic researchers and professional automotive engineers alike.

Particle Characterization in Technology

Particle Characterization in Technology
Volume II: Morphological Analysis

by J.K. Beddow

  • Publisher : CRC Press
  • Release : 2018-01-18
  • Pages : 288
  • ISBN : 1351083813
  • Language : En, Es, Fr & De
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The first section of volume II deals with both theory and methods of morphological analysis, it then discusses data analysis, and finally, the applications.

Advanced Particulate Morphology, Proceedings of the National Science Foundation Residential Workshop on Advanced Particulate Morphology Held in Iowa City, Iowa, August 1977

Advanced Particulate Morphology, Proceedings of the National Science Foundation Residential Workshop on Advanced Particulate Morphology Held in Iowa City, Iowa, August 1977
A Book

by Beddow JK Ed

  • Publisher : Unknown Publisher
  • Release : 1980
  • Pages : 129
  • ISBN : 9876543210XXX
  • Language : En, Es, Fr & De
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German Double Particles as Preverbs

German Double Particles as Preverbs
Morphology and Conceptual Semantics

by Andrew McIntyre

  • Publisher : Unknown Publisher
  • Release : 2001
  • Pages : 336
  • ISBN : 9876543210XXX
  • Language : En, Es, Fr & De
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Particulate Carbon

Particulate Carbon
Formation During Combustion

by Donald Siegla

  • Publisher : Springer Science & Business Media
  • Release : 2013-11-11
  • Pages : 505
  • ISBN : 1475761376
  • Language : En, Es, Fr & De
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The goal of the symposium, "Particulate Carbon: Formation During Combustion", held at the General Motors Research Laboratories on October 15 and 16, 1980, was to discuss fundamental aspects of soot formation and oxidation in combustion systems and to stimulate new research by extensive interactions among the participants. This book contains lhe papers and discussions of that symposium, the 26th in an annual series covering many different disciplines which are timely and of interest to both General Motors and the technical community at large. The subject of this symposium has considerable relevance for man in his effort to control and preserve his environment. Emission of particulate carbon into the atmos phere from combustion sources is of concern to scientists and laymen alike. The hope of reducing this emission clearly requires an understanding of its formation during the combustion process, itself an area of considerable long-term research interest. It is our hope that this symposium has served to summarize what is known so that what remains to be learned can be pursued with greater vigor.

Methods for Investigating the Effects of Particulate Processing Sequence on Product Morphology

Methods for Investigating the Effects of Particulate Processing Sequence on Product Morphology
A Book

by Yuh-Ling Chen

  • Publisher : Unknown Publisher
  • Release : 1984
  • Pages : 162
  • ISBN : 9876543210XXX
  • Language : En, Es, Fr & De
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Particulate Interactions in Dry Powder Formulation for Inhalation

Particulate Interactions in Dry Powder Formulation for Inhalation
A Book

by Xian Ming Zeng,Gary Peter Martin,Christopher Marriott

  • Publisher : CRC Press
  • Release : 2000-10-26
  • Pages : 264
  • ISBN : 1135729778
  • Language : En, Es, Fr & De
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Interactions between drug particulates are crucial in determining drug dispersion and deaggregation, and ultimately delivery efficiency. This book combines principles established in surface and colloidal chemistry with pharmaceutical powder technology. It discusses some of the factors affecting particulate interactions, and particle-fluid interaction in the respiratory tract. It review some of the studies carried out in dry powder formulation development, and proposes possible strategies in improving DPI efficiency. The majority of these principles are applicable to other pharmaceutical solid dosage forms (e.g. tablets and capsules).

Control of Particulate Matter Contamination in Healthcare Manufacturing

Control of Particulate Matter Contamination in Healthcare Manufacturing
A Book

by Thomas A. Barber

  • Publisher : CRC Press
  • Release : 1999-10-31
  • Pages : 578
  • ISBN : 1000065111
  • Language : En, Es, Fr & De
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This book offers practical applications addressing the specifics of contamination, including particle origination, characterization, identification, and elimination, with a special focus on quality considerations. Written by an industry expert, this material offers a clear and concise understanding of particle populations and their control in stabi

The Effects of TiO2 Particulate Film Morphology and TiO2 Surface Characteristics on Photoactivity

The Effects of TiO2 Particulate Film Morphology and TiO2 Surface Characteristics on Photoactivity
A Book

by James C. Kennedy

  • Publisher : Unknown Publisher
  • Release : 1994
  • Pages : 330
  • ISBN : 9876543210XXX
  • Language : En, Es, Fr & De
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Effects of Particulate Debris Morphology on the Rolling Wear Behavior of All-Steel and Si(Sub 3)N(Sub 4)-Steel Bearing Element Couples

Effects of Particulate Debris Morphology on the Rolling Wear Behavior of All-Steel and Si(Sub 3)N(Sub 4)-Steel Bearing Element Couples
A Book

by Anonim

  • Publisher : Unknown Publisher
  • Release : 2001
  • Pages : 129
  • ISBN : 9876543210XXX
  • Language : En, Es, Fr & De
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Rolling contact fatigue experiments were performed on all-steel and hybrid Si[sub 3]N[sub 4]-M50 steel rolling bearing systems using particulate contaminated lubricants. The particulate contaminants used were glycothermally synthesized[alpha]-Al[sub 2]O[sub 3] platelets or Arizona test dust. The effects of contaminant composition and morphology on rolling contact fatigue and wear behavior were explored. The effects of bearing element material properties on fatigue and wear behavior were also examined. Rolling wear behavior is related to bearing component material configuration and the type of particulate contaminant present in the lubricant. Component and particulate material properties such as hardness and elastic modulus are observed to affect rolling wear behavior. Wear mechanisms such as contact stress fatigue, indenting, cutting and plowing are observed.

Effect of Engine Operating Conditions on the Size and Morphology of Diesel Particulate Emissions

Effect of Engine Operating Conditions on the Size and Morphology of Diesel Particulate Emissions
A Book

by Adam Neer

  • Publisher : Unknown Publisher
  • Release : 2005
  • Pages : 118
  • ISBN : 9876543210XXX
  • Language : En, Es, Fr & De
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"The size, morphology and volume fraction of sub-micron particulate matter emitted from a compression ignition (diesel) engine was investigated using thermophoretic sampling experiments followed by direct visual characterizations under transmission electron microscopy"--Abstract, leaf iii.