Method for Sampling Sub-micron Particles

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ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (873 download)

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Book Synopsis Method for Sampling Sub-micron Particles by :

Download or read book Method for Sampling Sub-micron Particles written by and published by . This book was released on 1985 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Apparatus and method steps for collecting sub-micron sized particles include a collection chamber and cryogenic cooling. The cooling is accomplished by coil tubing carrying nitrogen in liquid form, with the liquid nitrogen changing to the gas phase before exiting from the collection chamber in the tubing. Standard filters are used to filter out particles of diameter greater than or equal to 0.3 microns; however the present invention is used to trap particles of less than 0.3 micron in diameter. A blower draws air to said collection chamber through a filter which filters particles with diameters greater than or equal to 0.3 micron. The air is then cryogenically cooled so that moisture and sub-micron sized particles in the air condense into ice on the coil. The coil is then heated so that the ice melts, and the liquid is then drawn off and passed through a Buchner funnel where the liquid is passed through a Nuclepore membrane. A vacuum draws the liquid through the Nuclepore membrane, with the Nuclepore membrane trapping sub-micron sized particles therein. The Nuclepore membrane is then covered on its top and bottom surfaces with sheets of Mylar. RTM. and the assembly is then crushed into a pellet. This effectively traps the sub-micron sized particles for later analysis.

Portable Sample Preparation and Analysis System for Micron and Sub-micron Particle Characterization Using Light Scattering and Absorption Spectroscopy

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ISBN 13 :
Total Pages : pages
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Book Synopsis Portable Sample Preparation and Analysis System for Micron and Sub-micron Particle Characterization Using Light Scattering and Absorption Spectroscopy by :

Download or read book Portable Sample Preparation and Analysis System for Micron and Sub-micron Particle Characterization Using Light Scattering and Absorption Spectroscopy written by and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: There is provided a method and device for remote sampling, preparation and optical interrogation of a sample using light scattering and light absorption methods. The portable device is a filtration-based device that removes interfering background particle material from the sample matrix by segregating or filtering the chosen analyte from the sample solution or matrix while allowing the interfering background particles to be pumped out of the device. The segregated analyte is then suspended in a diluent for analysis. The device is capable of calculating an initial concentration of the analyte, as well as diluting the analyte such that reliable optical measurements can be made. Suitable analytes include cells, microorganisms, bioparticles, pathogens and diseases. Sample matrixes include biological fluids such as blood and urine, as well as environmental samples including waste water.

Sub-micron Particle Sampler Apparatus

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ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (873 download)

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Book Synopsis Sub-micron Particle Sampler Apparatus by :

Download or read book Sub-micron Particle Sampler Apparatus written by and published by . This book was released on 1987 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Apparatus and method steps for collecting sub-micron sized particles include a collection chamber and cryogenic cooling. The cooling is accomplished by coil tubing carrying nitrogen in liquid form, with the liquid nitrogen changing to the gas phase before exiting from the collection chamber in the tubing. Standard filters are used to filter out particles of diameter greater than or equal to 0.3 microns; however the present invention is used to trap particles of less than 0.3 micron in diameter. A blower draws air to said collection chamber through a filter which filters particles with diameters greater than or equal to 0.3 micron. The air is then cryogenically cooled so that moisture and sub-micron sized particles in the air condense into ice on the coil. The coil is then heated so that the ice melts, and the liquid is then drawn off and passed through a Buchner funnel where the liquid is passed through a Nuclepore membrane. A vacuum draws the liquid through the Nuclepore membrane, with the Nuclepore membrane trapping sub-micron sized particles therein. The Nuclepore membrane is then covered on its top and bottom surfaces with sheets of Mylar. RTM. and the assembly is then crushed into a pellet. This effectively traps the sub-micron sized particles for later analysis.

Engineering of Submicron Particles

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Publisher : John Wiley & Sons
ISBN 13 : 1119296781
Total Pages : 238 pages
Book Rating : 4.1/5 (192 download)

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Book Synopsis Engineering of Submicron Particles by : Jayanta Chakraborty

Download or read book Engineering of Submicron Particles written by Jayanta Chakraborty and published by John Wiley & Sons. This book was released on 2019-06-10 with total page 238 pages. Available in PDF, EPUB and Kindle. Book excerpt: Brings together in one place the fundamental theory and models, and the practical aspects of submicron particle engineering This book attempts to resolve the tricky aspects of engineering submicron particles by discussing the fundamental theories of frequently used research tools—both theoretical and experimental. The first part covers the Fundamental Models and includes sections on nucleation, growth, inter-molecular and inter-particle forces, colloidal stability, and kinetics. The second part examines the Modelling of a Suspension and features chapters on fundamental concepts of particulate systems, writing the number balance, modelling systems with particle breakage and aggregation, and Monte Carlo simulation. The book also offers plenty of diagrams, software, examples, brief experimental demonstrations, and exercises with answers. Engineering of Submicron Particles: Fundamental Concepts and Models offers a lengthy discussion of classical nucleation theory, and introduces other nucleation mechanisms like organizer mechanisms. It also looks at older growth models like diffusion controlled or surface nucleation controlled growth, along with new generation models like connected net analysis. Aggregation models and inter-particle potentials are touched upon in a prelude on intermolecular and surface forces. The book also provides analytical and numerical solutions of population balance models so readers can solve basic population balance equations independently. Presents the fundamental theory, practical aspects, and models of submicron particle engineering Teaches readers to write number balances for their own system of interest Provides software with open code for solution of population balance model through discretization Filled with diagrams, examples, demonstrations, and exercises Engineering of Submicron Particles: Fundamental Concepts and Models will appeal to researchers in chemical engineering, physics, chemistry, engineering, and mathematics concerned with particulate systems. It is also a good text for advanced students taking particle technology courses.

Powder Sampling and Particle Size Determination

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Publisher : Elsevier
ISBN 13 : 0080539327
Total Pages : 683 pages
Book Rating : 4.0/5 (85 download)

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Book Synopsis Powder Sampling and Particle Size Determination by : T. Allen

Download or read book Powder Sampling and Particle Size Determination written by T. Allen and published by Elsevier. This book was released on 2003-12-09 with total page 683 pages. Available in PDF, EPUB and Kindle. Book excerpt: Powder technology is a rapidly expanding technology and nowhere more than in particle characterization. There has been an explosion of new particle measuring techniques in the past ten year particularly in the field of on-line measurement. One of the main aims of this book is to bring the reader up-to-date with current practices. One important area of interest is the improvements in on-line light scattering instruments and the introduction of ultrasonic on-line devices. Another is the introduction of on-line microscopy, which permits shape analysis in conjunction with particle sizing.Schools of powder technology are common in Europe and Japan but the importance of this subject has only recently been recognised in America with the emergence of the Particle Research Centre (PERC) at the University of Florida in Gainsville. - Details all the latest developments in powder technology - Written by established authority on powder technology- A comprehensive text covering all aspects of powder technology and handling of particulate solids including characterization, handling and applications

Submicron Emulsions in Drug Targeting and Delivery

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Publisher : CRC Press
ISBN 13 : 1000725375
Total Pages : 356 pages
Book Rating : 4.0/5 (7 download)

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Book Synopsis Submicron Emulsions in Drug Targeting and Delivery by : S Benita

Download or read book Submicron Emulsions in Drug Targeting and Delivery written by S Benita and published by CRC Press. This book was released on 2019-08-16 with total page 356 pages. Available in PDF, EPUB and Kindle. Book excerpt: It is anticipated that submicron emulsion and lipid suspension will find numerous and novel medical applications in the near future. The purpose of this multi-authore book is to provide the reader with an up-to-date general overview of submicron emulsions and lipid suspensions (solid lipid nanoparticles) as well as to emphasize the various methods of preparation, characerization, evaluation and potential applications in various therapeutic areas. Leading authors have contributed to this unique book which contains all state of the art and detailed knowledge related to the physico-chemical, pharmaceutical and medical aspects of these most interesting but complex dosage forms, thus making this information easily available to the reader. This book will be of interest to scientists working in the field of drug delivery and targeting in universities as well as in the pharmaceutical, food, cosmetic, veterinary and chemical industries.

A Method for Sizing Sub-micron Particles Using Small Angle Diffraction of Soft X-rays

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ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (727 download)

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Book Synopsis A Method for Sizing Sub-micron Particles Using Small Angle Diffraction of Soft X-rays by :

Download or read book A Method for Sizing Sub-micron Particles Using Small Angle Diffraction of Soft X-rays written by and published by . This book was released on 1988 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this work is to develop a method of sizing sub-micron particles using small-angle soft x-ray diffraction. Solid poly-styrene spheres of known sizes were used as scattering samples, with C-K.cap alpha. (44.8Å) and V-L.cap alpha. (24.3Å) radiation from a conventional x-ray source. Two devices were used to diffract the x-rays. One collimates the radiation using a series of pinholes immediately preceding the sample, and directs the unfocussed radiation onto film placed far from the sample. The other utilizes radiation from a single pinhole above the source onto the sample and a spherical multilayer mirror in series, so that the radiation passes twice through the sample and is focused onto film immediately above the pinhole assembly to increase the effective sample area. Using the latter device, two types of diffraction patterns were obtained: a sharp, relatively small pattern from spheres which form a hexagonal lattice structure, and a diffuse, larger pattern from an unordered, or random, array of spheres. Both patterns are presented in this work, along with the calculations, based upon light scattering from an unordered and an ordered array of particles, of the scattering patterns. 9 refs., 32 figs., 2 tabs.

A Method for Sizing Sub-micron Particles Using Small Angle Diffraction of Soft X-rays

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ISBN 13 :
Total Pages : 70 pages
Book Rating : 4.:/5 (844 download)

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Book Synopsis A Method for Sizing Sub-micron Particles Using Small Angle Diffraction of Soft X-rays by : Dana J. Berkeland

Download or read book A Method for Sizing Sub-micron Particles Using Small Angle Diffraction of Soft X-rays written by Dana J. Berkeland and published by . This book was released on 1988 with total page 70 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Methods and Experience in the Measurement of Submicron Particles in Source Emissions and the Ambient Air

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ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (11 download)

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Book Synopsis Methods and Experience in the Measurement of Submicron Particles in Source Emissions and the Ambient Air by :

Download or read book Methods and Experience in the Measurement of Submicron Particles in Source Emissions and the Ambient Air written by and published by . This book was released on 1972 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Measurement of Size Distribution of Submicron Particles Using New Laser Diagnostics

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Publisher :
ISBN 13 :
Total Pages : 31 pages
Book Rating : 4.:/5 (227 download)

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Book Synopsis Measurement of Size Distribution of Submicron Particles Using New Laser Diagnostics by : James F. Driscoll

Download or read book Measurement of Size Distribution of Submicron Particles Using New Laser Diagnostics written by James F. Driscoll and published by . This book was released on 1979 with total page 31 pages. Available in PDF, EPUB and Kindle. Book excerpt: The one year research program described here was a direct extension of work completed during the 1977 AFOSR/ASEE Summer Faculty Research program at AFRPL. During that program the author and Dr. David Mann, AFRPL, performed the first is situ size measurements of submicron alumina (Al2O3) particles that have been published to date. The new laser diagnostic technique used, Diffusion Broadening Spectroscopy, represents a new advance in the state-of-the-art of submicron particle sizing. The goal of the research described herein was to develop a data reduction procedure to extend the applicability of the technique, so that size distribution half width can be measured, in addition to particle mean diameter. The computer routine was developed to determine particle mean diameter and size distribution half width, given light scattering data obtained at two scattering angles. Sensitivity of the results was investigated and feasibility of future use of the technique in rocket motors and plumes was deduced. (Author).

Biophysical Characterization of Proteins in Developing Biopharmaceuticals

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Publisher : Elsevier
ISBN 13 : 0444641742
Total Pages : 586 pages
Book Rating : 4.4/5 (446 download)

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Book Synopsis Biophysical Characterization of Proteins in Developing Biopharmaceuticals by : Damian J. Houde

Download or read book Biophysical Characterization of Proteins in Developing Biopharmaceuticals written by Damian J. Houde and published by Elsevier. This book was released on 2019-11-13 with total page 586 pages. Available in PDF, EPUB and Kindle. Book excerpt: Biophysical Characterization of Proteins in Developing Biopharmaceuticals, Second Edition, presents the latest on the analysis and characterization of the higher-order structure (HOS) or conformation of protein based drugs. Starting from the very basics of protein structure, this book explains the best way to achieve this goal using key methods commonly employed in the biopharmaceutical industry. This book will help today’s industrial scientists plan a career in this industry and successfully implement these biophysical methodologies. This updated edition has been fully revised, with new chapters focusing on the use of chromatography and electrophoresis and the biophysical characterization of very large biopharmaceuticals. In addition, best practices of applying statistical analysis to biophysical characterization data is included, along with practical issues associated with the concept of a biopharmaceutical’s developability and the technical decision-making process needed when dealing with biophysical characterization data. Presents basic protein characterization methods and tools applicable to (bio)pharmaceutical research and development Highlights the capabilities and limitations of each technique Discusses the underlining science of each tool Empowers industrial biophysical chemists by providing a roadmap for applying biophysical tools Outlines the needs for new characterization and analytical tools in the biopharmaceutical industry

Submicron Porous Materials

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Publisher : Springer
ISBN 13 : 3319530356
Total Pages : 351 pages
Book Rating : 4.3/5 (195 download)

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Book Synopsis Submicron Porous Materials by : Paolo Bettotti

Download or read book Submicron Porous Materials written by Paolo Bettotti and published by Springer. This book was released on 2017-02-21 with total page 351 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book covers the latest research on porous materials at the submicron scale and inspires readers to better understand the porosity of materials, as well as to develop innovative new materials. A comprehensive range of materials are covered, including carbon-based and organic-based porous materials, porous anodic alumina, silica, and titania-based sol-gel materials. The fabrication, characterization, and applications of these materials are all explored, with applications ranging from sensors, thermoelectrics, catalysis, energy storage, to photovoltaics. Also of practical use for readers are chapters that describe the basics of porous silicon fabrication and its use in optical sensing and drug delivery applications; how thermal transport is affected in porous materials; how to model diffusion in porous materials; and a unique chapter on an innovative spectroscopic technique used to characterize materials' porosity. This is an ideal book for graduate students, researchers, and professionals who work with porous materials.

Energy Research Abstracts

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Publisher :
ISBN 13 :
Total Pages : 840 pages
Book Rating : 4.3/5 (129 download)

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Book Synopsis Energy Research Abstracts by :

Download or read book Energy Research Abstracts written by and published by . This book was released on 1990 with total page 840 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Analysis of Airborne Particles by Physical Methods

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Publisher : CRC Press
ISBN 13 : 1351078097
Total Pages : 314 pages
Book Rating : 4.3/5 (51 download)

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Book Synopsis Analysis of Airborne Particles by Physical Methods by : Malissa Hanns

Download or read book Analysis of Airborne Particles by Physical Methods written by Malissa Hanns and published by CRC Press. This book was released on 2018-01-18 with total page 314 pages. Available in PDF, EPUB and Kindle. Book excerpt: First Published in 2018. Routledge is an imprint of Taylor & Francis, an Informa company.

Particles in Gases and Liquids 2

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Publisher : Springer Science & Business Media
ISBN 13 : 1489935444
Total Pages : 393 pages
Book Rating : 4.4/5 (899 download)

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Book Synopsis Particles in Gases and Liquids 2 by : K.L. Mittal

Download or read book Particles in Gases and Liquids 2 written by K.L. Mittal and published by Springer Science & Business Media. This book was released on 2013-11-11 with total page 393 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book chronicles the proceedings of the Second Symposium on Particles in Gases and Liquids: Detection, Characterization and Control held as a part of the 20th Annual Fine Particle Society meeting in Boston, August 21-25, 1989. As this second symposium was as successful as the prior one, so we have decided to hold symposia on this topic on a regular (biennial) basis and the third symposium in this series is scheduled to be held at the 22nd Annual Meeting of the Fine Particle Society in San Jose, California, July 29-August 2, 1991. l As pointed out in the Preface to the prior volume in this series that recently there has been tremendous concern about yield losses due to unwanted particles, and these unwelcome particles can originate from a legion of sources, including process gases and liquids. Also all signals indicate that in the future manufacture of sophisticated and sensitive microelectronic components (with shrinking dimensions) and other precision parts, the need for detection, characterization, analysis and control of smaller and smaller particles will be more intensified.

Gas Cyclones and Swirl Tubes

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Publisher : Springer Science & Business Media
ISBN 13 : 9783540433262
Total Pages : 364 pages
Book Rating : 4.4/5 (332 download)

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Book Synopsis Gas Cyclones and Swirl Tubes by : Alex C. Hoffmann

Download or read book Gas Cyclones and Swirl Tubes written by Alex C. Hoffmann and published by Springer Science & Business Media. This book was released on 2002-05-28 with total page 364 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book has been conceived to provide guidance on the theory and design of cyclone systems. Forthose new to the topic, a cyclone is, in its most basic form, a stationary mechanical device that utilizes centrifugal force to separate solid or liquid particles from a carrier gas. Gas enters near the top via a tangential or vaned inlet, which gives rise to an axially descending spiral of gas and a centrifugal force field that causes the incoming particles to concentrate along, and spiral down, the inner walls of the separator. The thus-segregated particulate phase is allowed to exit out an underflow pipe while the gas phase constricts, and - in most separators - reverses its axial direction of flow and exits out a separate overflow pipe. Cyclones are applied in both heavy and light industrial applications and may be designed as either classifiers or separators. Their applications are as plentiful as they are varied. Examples include their use in the separation or classification of powder coatings, plastic fines, sawdust, wood chips, sand, sintered/powdered meta!, plastic and meta! pellets, rock and mineral cmshings, carbon fines, grain products, pulverized coal, chalk, coal and coal ash, catalyst and petroleum coke fines, mist entrained off of various processing units and liquid components from scmbbing and drilling operations. They have even been applied to separate foam into its component gas and liquid phases in recent years.

Nuclear Science Abstracts

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Publisher :
ISBN 13 :
Total Pages : 956 pages
Book Rating : 4.0/5 ( download)

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Book Synopsis Nuclear Science Abstracts by :

Download or read book Nuclear Science Abstracts written by and published by . This book was released on 1969-03 with total page 956 pages. Available in PDF, EPUB and Kindle. Book excerpt: