U.S. Forest Service Pacific Northwest Region
88
88
Dec 18, 2013
12/13
by
Lotspeich, Frederick B., 1914-2005; Everest, Fred H; Pacific Northwest Forest and Range Experiment Station (Portland, Or.)
texts
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Caption title
Topics: Gravel, Particle size determination, Gravel, Particle size determination
189
189
Jan 9, 2013
01/13
by
Wing, Robert H; Marine EcoSystems Analysis Program; Pacific Marine Environmental Laboratory (U.S.)
texts
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"September 1976"
Topic: Particle size determination.
19
19
texts
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x, 309 p. : 24 cm
Topic: Particle size determination
369
369
Jun 17, 2010
06/10
by
Asimow, R. M
texts
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Measurement of superparamagnetic particle shapes and size distribution
Topics: MAGNETIZATION, PARAMAGNETISM, PARTICLE SIZE DISTRIBUTION, SHAPES, PARAMAGNETISM, PARTICLE SIZE
http://uf.catalog.fcla.edu/uf.jsp?st=UF030361800%26ix=pm%26I=0%26V=D%26pm=1
Topics: Aerosols, Particle size determination.
Biodiversity Heritage Library
2,289
2.3K
Sep 10, 2010
09/10
by
Hobson, R. D. (Richard D.); Coastal Engineering Research Center (U.S.)
texts
eye 2,289
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Cover title
Topics: Particle size determination, Soils
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32
Jun 22, 2017
06/17
by
Donnelly, Michelle K.; Yang, Jiann C.
texts
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Topic: Particle size determination -- Instruments
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51
Jun 30, 2010
06/10
by
Cadle, Richard D
texts
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303 p. 19 cm
Topics: Particle size determination, Partikel
Revision of proposed Federal specification
Topics: Dieldrin, Insecticides Particle size
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42
Jun 22, 2017
06/17
by
Donnelly, Michelle K.; Mulholland, George W.
texts
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Topic: Particle size determination -- Methodology
2
2.0
texts
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xii, 353 p. : 24 cm
Topic: Particle size determination -- Congresses
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38
Jun 5, 2012
06/12
by
Silverman, Leslie; Billings, Charles E., 1925- joint author; First, Melvin W., joint author; American Industrial Hygiene Association; U.S. Atomic Energy Commission
texts
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"Prepared under the direction of the American Industrial Hygiene Association for the Division of Technical Information, United States Atomic Energy Commission."
Topics: Particle size determination, Industrial hygiene
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17
Dec 23, 2019
12/19
by
Allen, Terence
texts
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xx, 678 pages : 24 cm
Topics: Particle size determination, Granulométrie, Granulometrie
The performance of the vertical sealing elements is determined by the level of protection to which they are subjected. Construction processes are changing and cementitious coatings are increasingly taking place among current construction options. On the other hand, the weather has its increasingly aggressive and more evident incidence. The performance standard sets the guidelines for seal manufacturers to meet expected quality standards. Given the above comes the importance of evaluating the...
Topics: Particle size, permeability and performance.
Click here to view the University of Florida catalog record
Topics: Sintering, Aluminum oxide, Particle size determination
Currently petroleum is being used as a major source for new chemicals, materials & fuels, although it has limitations in availability & costs. It also raises environmental concern. A promising alternative raw material for the production of bioethanol, a fossil fuel substitute, from renewable source is lignocellulosic biomass. Parthenium hysterophorus L, an obnoxious flowering, offers a big challenge to all attempts of control because of its high regeneration capacity, production of huge...
Topics: Parthenium, Lignocellulosic, Biomass, Particle Size, Xylose
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6.0
texts
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2 v. : 27 cm
Topics: Particles, Bulk solids, Particle size determination
Cover title
Topics: Sandstone, Geology, Stratigraphic, Particle size determination
22
22
Mar 17, 2021
03/21
by
IRJASH Journal
texts
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Niosomal drug delivery system serves as drug depots within the body that release the drug in a controlled manner through its bilayer, providing the enclosed drug to be released with sustainedaction.Transdermal drug delivery system for steroidal drug molecules through the development of a niosomal gel is needed for an optimized drug delivery system due to various problems associated with conventional treatment of steroidal molecule. The objective of this study was to develop a niosomalgel-based...
Topics: Niosomal Gel, Steroid, Dispersion, Particle size
A Microsponge Delivery System MDS is patented, highly cross linked, porous, polymeric microspheres that can entrap wide range of actives and then release them onto the skin over a time and in response to trigger. It is a unique technology for the controlled release of topical agents and consists of microporous beads, typically 10 25 microns in diameter, loaded with active agent. In this study, Ketoconazole microsponges were prepared by using quasi emulsion solvent diffusion method. The...
Topics: Microsponge, microporous beads, particle size analysis
pages 19-21 ; 22 cm
Topics: Particulate Matter, Particle Size, Microscopy -- methods
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16
texts
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xi, 140 pages : 24 cm
Topics: Particle size determination -- Congresses, Granulométrie -- Congrès, Particle size...
10
10.0
May 5, 2020
05/20
by
Jelinek, Zdenek K
texts
eye 10
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178 pages 24 cm
Topics: Granulométrie, Particle size determination, Deeltjesgrootte, Stoftransport, Granulometrie
U.S. Forest Service Pacific Northwest Region
99
99
Aug 28, 2014
08/14
by
Sandberg, David V., 1944-; Martin, Robert Edward, 1931-; Pacific Northwest Forest and Range Experiment Station (Portland, Or.)
texts
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Cover title
Topics: Slashburning, Particle size determination, Slash (Logging) Smoke
An experimental investigation was conducted to examine the effects of fuel-air ratios, fuel composition and smoke-suppressant fuel additives on the sooting characteristics of a T-63 combustor. Multiple wavelength light transmission and two-angle light scattering measurements were used to measure the mean soot diameter. Ferrocene, 12% Cerium Hex-Cem and USLAD 2055 were found effective in reducing exhaust gas opacity. Initial results were conflicting on the cause for the reduced opacity.
Topics: Aeronautics, soot particle size, light transmittance, scattering
339
339
Dec 8, 2013
12/13
by
TAJ SULTANA
texts
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Study on the landslide is an attempt to understand the geo-environmental characteristics of landslide disaster in the hilly areas of Bangladesh in the context of Chittagong University campus. In the University campus a total of 16 colonies of 3 rd and 4 th class employees have been developed in an unplanned and illegal manner at the edge of hill-slops by cutting the hill soil. As consequence nearly every year during the monsoon period there are incidents of...
Topics: Landslide, Vulnerable Area, Particle Size, Hill Slope
Grindability of granite and Iron‐ore was investigated in this work. Samples were collected from Julius Berger Quarry and National Iron‐Ore Mining Company (NIOMCO), Itakpe. Particle size distribution of the samples by means of sieve shaker and grindability of samples were also determined. The results obtained show that weight retained varies from 36.71 g to 183.1 g for granite while that of iron‐ore vary from 9.65 g to 87.78 g. In addition, it was observed that granite and iron‐ore have...
Topics: Grindability, Granite, Iron ore, Particle Size, Sample
A combined optical and collection probe for solid propellant rocket motor exhaust particle analysis was designed and utilized in initial experiments with a sub-scale rocket motor. Shock swallowing capabilities of the probe were verified under restricted motor operations using a schlieren system. Window purge and ejector design were shown to be capable of keeping the probe windows clean when the probe was placed approximately 14 nozzle diameters downstream of the exhaust nozzle. The exhaust...
Topics: solid propellant, collection probe, particle size distribution
[7], 43, 12 leaves : 28 cm
Topics: Drilling muds -- Analysis, Particle size determination, Hydrometer
A combined optical and particle collection probe which employed an in situ particle size distribution measurement method and an infrared camera were used to obtain data that could be used to validate solid propellant rocket motor plume signature prediction codes. The probe design was optimized and the required rates for window purge and ejector flows were determined which provided proper functioning of the probe when placed in the supersonic region of the plume. At the nozzle exit the particle...
Topics: Solid Propellant, Collection Probe, Particle Size Distribution
Plastic composites were made from corncobs and high density polyethylene (HDPE) by extrusion and evaluated. The composites were manufactured using two different screened corncob particle size fractions (
Topics: Corncobs, flexural properties, particle size, plastic composites.
73
73
Oct 6, 2015
10/15
by
Powers, John P.
texts
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Title from cover
Topic: PARTICLE SIZE.,SOLID ROCKET FUELS.,HOLOGRAMS.,IMAGE PROCESSING.
723
723
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Extraction of essential neem oil from neem seed was carried by soxhelt extraction method using different organic solvents and parameters. Physico-chemical property of the extracted oil was also determined by using classical wet chemical method. Result revealed that, soxhlet extraction using hexane has 40.35%; using ethanol-hexane mixture of 60:40% volume proportion has 43.71%, using ethanol 42.65% and using methanol 42.89%. For all solvent type particle size has 355μm, extraction time 1hr up...
Topics: Neem oil, Particle size, Soxhlet extraction, Solvent type.
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80
Nov 26, 2015
11/15
by
Jarosław Lasota, Ewa Błońska, Maciej Zwydak, Tomasz Wanic
texts
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The physical and chemical properties of soil are the basic features that are used in the assessment of mountain sites. The aim of this study was to produce a simple key for classifying forest sites in mountain areas using soil particle size distribution. 200 plots (standard typological space) were selected for examination, most of which are typical of the Carpathians – being dominated by flysch rock. A few plots were located in the Sudety and Tatra Mountains, which have a different surface...
Topics: forest soil, particle size distribution, mountain forest sites
Title from cover
Topics: PARTICLE SIZE., SOLID ROCKET FUELS., HOLOGRAMS., IMAGE PROCESSING.
An algorithm that extracts aerosol optical depth and particle size index from satellite observations of upwelling radiance over clear ocean areas was modified and studied. In order to examine the algorithm's performance on a regional scale, a previously analyzed data set, retrieved by the NOAA-9 AVHRR sensor, was reprocessed. The area of the study was in the central Pacific Ocean during the RITS-88 cruise from 7 April to 5 May 1988. The results were compared to those of the earlier study and...
Topics: Aerosols, optical depth, particle size index, phase function
231
231
Jun 18, 2010
06/10
by
Basov, V. N.; Popov, V. A
texts
eye 231
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Coefficient of resistance to motion of burning particles
Topics: CARBON, PARTICLE SIZE, SURFACE TEMPERATURE, COMBUSTION, DRAG COEFFICIENTS, PARTICLE SIZE...
Mendeley Climate Change Library
54
54
Jul 6, 2019
07/19
by
J. A.C. Castellar; Joan Formosa; Ana Inés Fernández; Patricia Jové; Montserrat Gonzáles Bosch; Jordi Morató; Hans Brix; Carlos A. Arias
texts
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Reusing by-products is an important strategy to ensure the preservation of natural capital and climate change mitigation. This study aimed at evaluating the potential of cork granulates, a by-product of winery industry, as an organic carbon (OC) source for the treatment of hydroponic wastewaters. First, chemical characterization was performed and discussed. Secondly, batch studies were performed using synthetic hydroponic wastewater to understand the role of particle size (PS), pH and contact...
Topics: By-products, Contact time, Denitrification, Particle size, Reusing, Wastewater
7
7.0
Aug 12, 2018
08/18
by
Mahendra Kumar Trivedi; Shrikant Patil; Rama Mohan Tallapragada
texts
eye 7
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In earlier papers the effect of Mr. Trivedi’s thought intervention through biofield in his physical presence on the atomic, crystalline and particle characteristics of first series of transition metal powders, group four metals and carbon allotropes are discussed. In the present paper we demonstrate this unusual effect on sieve size distribution, apparent density and flow of several metal powders under PM plant conditions.
Topics: Biofield, Sieve analysis, Apparent density, Metal powders, Particle size
Source: http://academictorrents.com/details/6fb7177de0034a1f96074f045648bbc06fdf89c5
12
12
Aug 12, 2018
08/18
by
Mahendra Kumar Trivedi; Shrikant Patil; Rama Mohan Tallapragada
texts
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Silicon, tin and lead powders belong to group IV in periodic table and exhibit decreasing semi conducting nature towards the bottom of the group. These are very useful in producing non ferrous powder metallurgy components. In the present investigation silicon, tin and lead powders are exposed to bio field. Both the exposed and unexposed powders are later characterized by various techniques. The average particle size, after an initial decrease is found to increase with increase in number of days...
Topics: X-ray diffraction, Particle size, Biofield, Silicon, Tin, Lead
Source: http://academictorrents.com/details/dac05ee6f20ea307ac960f73d54048cc9540d815
Heavy metals are one of the main sources of pollution in sediment in coastal lagoons in Mexico. The presence of metals in sediments of these aquatic bodies, are an indicator that allows us to know the environmental quality of ecosystems and the risk it poses to public health. This, due to consumption of aquatic organisms that have direct contact with the sediment when inhabiting the bottom of the lagoon system. The objective of this research was to determine the concentration of Pb, Cd, Cu, Cr...
Topics: Affinity and particle size, bioavailability, risk, public health, temporality.
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59
Jun 22, 2017
06/17
by
Hackley, Vincent A.; Lum, Lin-Sien; Gintautas, Vadas; Ferraris, Chiara F.
texts
eye 59
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Topics: Cement -- Measurement, Particle size determination -- Measurement, Spectrum analysis -- Instruments
Mendeley Climate Change Library
29
29
Jul 6, 2019
07/19
by
Xiao Zhang; Wenwu Zhao; Lixin Wang; Yuanxin Liu; Yue Liu; Qiang Feng
texts
eye 29
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In the context of global climate change as well as local climate warming and drying on the Loess Plateau of China, understanding the relationship between soil particle size and soil water distribution during years of atypical precipitation is important. In this study, fractal geometry theory is used to describe the mechanical composition and texture of soils to improve our understanding of hydropedology and ecohydrology in the critical zone on the Loess Plateau. One grassland slope and two...
Topics: Loess plateau, Particle-size distribution, Soil-water characteristic curve
Mendeley Climate Change Library
34
34
Jul 6, 2019
07/19
by
Jessica Unda-Calvo; Estilita Ruiz-Romera; Silvia Fdez-Ortiz de Vallejuelo; Miren Martínez-Santos; Ainara Gredilla
texts
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In this study, non-destructive techniques (X-ray Diffraction, Infrared and Scanning Electron Microscopy with Energy Dispersive spectroscopies) and invasive procedures (pseudo-total and sequential metal extraction methodologies) were used to highlight the significance of evaluating different particle sizes of sediments for assessing the potential environmental and health implications of metal geochemistry in an urban ecosystem. The variability in composition and properties between bulk (
Topics: "Ecological and health risk, Particle size, geochemistry, Urban environment"
Depending on the mechanism of particle production, the resultant particle size and velocity distribution may range over several orders of magnitude. In general, if particle size information is desired from a given type generator, one must resort to some form of experimental determination of the distribution. If the source of particle production is a dynamic one involving a reasonable volume, holography provides a tailor-made particle size and velocity distribution detector. This is evidenced by...
Topics: NASA Technical Reports Server (NTRS), HOLOGRAPHY, PARTICLE SIZE DISTRIBUTION, VELOCITY...
9
9.0
Jul 30, 2018
07/18
by
Mahendra Kumar Trivedi; Kalyan Kumar Sethi; Parthasarathi P; a; Snehasis Jana
texts
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Sodium selenate is an important inorganic compound but lacks reliable and accurate physico-chemical and spectral characterization information. The study was carried out for the in-depth physicochemical, thermal, and spectroscopic characterization of sodium selenate using various analytical techniques. The powder X-ray diffraction spectroscopy analysis showed well-defined and sharp peaks indicated sodium selenate is crystalline in nature. The crystallite size was found to be in the range of...
Topics: Particle size, Thermal analysis, Sodium Selenate, Crystallite Size, Surface Area
Source: http://academictorrents.com/details/d8b6a0ec3793a274a37c33f4b52f5d98a397847a
5
5.0
Aug 12, 2018
08/18
by
Mahendra Kumar Trivedi; Rama Mohan Tallapragada; Alice Branton; Dahryn Trivedi; Gopal Nayak; Omprakash Latiyal; Snehasis Jana
texts
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Silver is widely utilized as antimicrobial agent and wound dressing, where its shape, size, surface area, and surface charge play an important role. The aim of present study was to evaluate the impact of biofield treatment on physicochemical and atomic properties of silver powder. The silver powder was divided into two groups, coded as control and treatment. The treatment group received Mr. Trivedi’s biofield treatment. Subsequently, control and treated samples were characterized using...
Topics: X-ray diffraction, Particle size, Surface area, Biofield Treatment, Silver
Source: http://academictorrents.com/details/ac67a7ee53e58dce9cbec6401f5385423a8e1777
In the present research, studying the effect of adding two different types of reinforcing particles, which included: Rice Husk and Bamboo powders which were practical size (25 and 75 µm) and utilize at four various concentrations of (2,4,6, and 8 wt.%), to locate improved in the properties of tensile for heat-cure acrylic resin. The blend of resin and powders were cured at temperature 70-100 °C in a water bath and 2.5 bar for 2hours, The ASTM D638...
Topics: Rice Husk, Bamboo, Tensile, Heat Cure, Weight Fraction & Particle Size
An experimental investigation of the combustion behavior in solid fuel ramjets was conducted. Light extinction measurements were employed to determine the effects of fuel composition and bypass ratio on the combustion efficiency and the percent and size of unburned carbon. Utility and limitations of the optical method are presented.
Topics: Aeronautics, solid fuel ramjet, light extinction measurement, particle size measurement
Journal of Research of the National Institute of Standards and Technology
Topics: atomizers, aerosol generator, condensation nuclei counters, particle size, polystyrene latex spheres
