particle size distribution Articles - page 2

Non-halogen Fire Resistance Fine Aluminum Hydroxide Additive

Product Name: Fine Aluminum Hydroxide Product Type: H-WF-1 Product Properties: H-WF-1 product has low electrolyte content, narrow particle-size distribution, low oil absorption, high whiteness (low impurities and organics, the invention patent owned by Pengfeng, One Producing Method of High Whiteness Aluminum Hydroxide Filler-Patent code: ZL 2013 1 0162126.4), high extrusion speed. As ...

May 16, 2019

By Zibo Pengfeng New Material Technology Co.,LTD.

The Revised ASTM Standard on the Description and Identification of Soils (Visual-Manual Procedure)

ASTM Practice for Description and Identification of Soils (Visual-Manual Procedure) (D 2488) was significantly revised in 1984. Revisions were made to parallel the recent changes in ASTM Classification of Soils for Engineering Purposes (D 2487) and to reflect more of current practices used for visual-manual description and identification. Where possible, the number of terms for descriptive ...

Dec. 1, 1987

By ASTM International

Sampling, testing and modeling particle size distribution in urban catch basins

The study analyzed the particle size distribution of particulate matter (PM) retained in two catch basins located, respectively, near a parking lot and a traffic intersection with common high levels of traffic activity. Also, the treatment performance of a filter medium was evaluated by laboratory testing. The experimental treatment results and the field data were then used as inputs to a ...

Dec. 15, 2014

By IWA Publishing

Sources of organic matter in first flush runoff from urban roadways

This study aims to explore the influential sources of organic matter in first flush runoff from urban roadways by comparing organic carbon content and particle size distribution in road dust with those from discharge from vehicles during rainfall. Samples on first flush runoff and road dust were collected from urban roadways. In addition, vehicle drainage was assumed to flow from vehicles ...

Jun. 29, 2015

By IWA Publishing

Sources of organic matter in first flush runoff from urban roadways

This study aims to explore the influential sources of organic matter in first flush runoff from urban roadways by comparing organic carbon content and particle size distribution in road dust with those from discharge from vehicles during rainfall. Samples on first flush runoff and road dust were collected from urban roadways. In addition, vehicle drainage was assumed to flow from vehicles ...

Jun. 29, 2015

By IWA Publishing

Mining and Minerals

Bettersize particle size and particle shape analysis instruments are widely used in the research, manufacturing and application of all kinds of mining and minerals, bringing favorable profits. The Bettersize particle size analyzer, particle shape analyzer and powder characteristics tester can provide complete physical property analysis for the deep processing of mining and minerals, and offer ...

Oct. 23, 2019

By Dandong Bettersize Instruments Ltd.

$The development of nanoparticulate materials for biodegradable bone fracture plates: (I)$

The development of nanoparticulate materials for biodegradable bone fracture plates: (I)

A cost effective route for the production of nanoparticulate calcium carbonate with high phase purity, a narrow particle size range and low tendency for agglomeration represents a crucial stage in the development of degradable nanocomposite materials for the manufacture of fracture fixation plates. In this study, the size, morphology and zeta potential of calcium carbonate (CaCO3) precipitated ...

Jan. 28, 2008

By Inderscience Publishers

Biomedical applications of iron oxide nanostructures

Iron oxide nanostructures including nanoparticles and nanorods have been widely used for numerous in vivo and vitro applications such as magnetic resonance imaging contrast enhancement, tissue repair and drug delivery. All these biomedical and bioengineering applications require that these nanostructures have high magnetisation values and size smaller then 100 nm with overall narrow particle size ...

Aug. 10, 2009

By Inderscience Publishers

Flue gases pollutant characterization by multispectral extinction measurement

ABSTRACT We present preliminary experimental results relevant to tests carried out on an innovative instrument properly designed for real time measurement of both particle size distribution and concentration in particle laden flows. The system performs on line, continuous, in situ measurements. The instrument, which is based on a multi-wavelength (300nm – 900nm) extinction technique, ...

Oct. 6, 2014

By Environmental Technology Publications Limited

Particulate Venturi Scrubber System

A precious metal refiner required the most advanced particulate scrubber to replace wet ESP for submicron particulate collection. Due to the very high gold prices, economic reasons were the driving force toward maximum removal efficiency. Macrotek was selected to design and install their ultra high efficiency flooded disc MVA scrubber. In addition to the high removal efficiency for submicron ...

Jun. 10, 2011

By Macrotek Inc.

Sensitivity of response of LISST-ABS and OBS to size distribution changes

This Note shows how the calibration of the LISST-ABS acoustic backscatter sensor and of optical backscatter sensor (OBS) changes when water contains a broad distribution of particle sizes, and why LISST-ABS is inherently superior. Particle size distributions in water are usually not very narrow, i.e. particles of more than a single size exist in suspension. It is common practice to consider ...

Oct. 20, 2015

By Sequoia Scientific, Inc.

Assessment of particulates in the urban atmosphere of Sao Carlos, Brazil

A survey on the concentration of particulate matter in the urban atmosphere was carried out in the city of Sao Carlos, Brazil. Five sites were selected for data collection one in the city centre (high concentration of people and automotive vehicles), three in industrial areas, and one at the interface with the countryside. The particle size distribution and mass concentration, temperature, ...

Jan. 26, 2004

By Inderscience Publishers

Acoustic Spectroscopy for Concentrated Polydisperse Colloids with Low Density Contrast

The mechanisms of sound attenuation are different in dispersions with low and high density contrast. “Viscous losses” are dominant in high density contrast dispersions whereas “thermal losses” predominate in dispersions with low density contrast. The rutile dispersion is chosen as an instance of the high density contrast system. The dispersion of the neoprene latex is an instance of the low ...

Oct. 16, 1996

By Dispersion Technology Inc.

Manufacturing process of silicon powder

Silicon powder’s manufacturing process can be simply described as: breaking & milling from silicon lump, but it’s actually much complicated in order to get the powder with required purity and particle size distribution. 1st Step: Raw material choosing, this concerns the purity of final silicon powder. The silicon lump prepared for manufacturing powder is about >100mm. 2nd Step: ...

Jan. 3, 2020

By Edgetech Industries LLC

Large eddy simulation modelling of the dispersion of radioactive particulate matter

Field experiments with a Radioactive Dispersion Device (RDD) were performed by the National Radiation Protection Institute (NRPI) of the Czech Republic. We present the results of computer simulations of these experiments using a new microscale model, Charles University Large Eddy Microscale Model (CLMM). The model was first validated using wind tunnel data for the dispersion of continuous passive ...

Oct. 13, 2012

By Inderscience Publishers

Study of the dispersion/settling of oil–mineral–aggregates using particle tracking model and assessment of their potential risks

A random walk particle tracking model was used to simulate the motions of oil–mineral–aggregates (OMAs) under hydrodynamic conditions involving wave–induced velocities, random velocities due to turbulence, and the settling velocity due to gravity. Wave–induced and settling velocities for OMAs determined from the application of Stokes's theory and empirical equations derived from experimental data ...

Sep. 12, 2013

By Inderscience Publishers

Humic substances alleviate the aquatic toxicity of PVP‐coated silver nanoparticles to organisms of different trophic levels

It was investigated how humic substances (HS) modify the aquatic toxicity of silver nanoparticles (AgNPs) as these particles agglomerate in water and interact with HS. An alga species (Raphidocelis subcapitata), a cladoceran species (Chydorus sphaericus) and a freshwater fish larva (Danio rerio), representing organisms of different trophic levels, were exposed to colloids of the ...

Feb. 13, 2015

By John Wiley & Sons, Ltd.

Dynamic Light Scattering (DLS)

Dynamic light scattering (DLS), also known as photon correlation spectroscopy (PCS), is a commonly used characterization method for nanoparticles. DLS particle size analyzer has the advantages of accuracy, rapidity, and good repeatability. With the update of the instrument and the development of data processing technology, the current dynamic light scattering instrument laser particle size ...

Aug. 10, 2019

By Dandong Bettersize Instruments Ltd.

$Problems in Particle Size: Laser Diffraction Observations$

Problems in Particle Size: Laser Diffraction Observations

The results obtained by a particle size analysis can easily be taken for granted. If the particle size distribution of a material must be quantified and reported, it is important that the full implications of the analytical technique and generated data are investigated and understood. While complying with designated testing methods and procedures is of great importance in a quality assurance ...

Jul. 2, 2013

By Particle Technology Labs

Development of air quality indices for Mumbai, India

This paper proposes a simple approach for developing air quality indices for different sites in an urban region of India. The database used for calculating these indices included various physical and chemical characteristics of suspended particulate matter, such as particle size distribution, chemical (elemental) properties and parameters governing the acidity of precipitation. The indices were ...

Jan. 26, 2004

By Inderscience Publishers

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