Form particle size. Medical search. Frequent questions

For sucrose and sodium chloride, three powders of different size distributions were prepared by mixing predetermined quantities of particle size fractions. (unboundmedicine.com)
For paracetamol, three batches with varying particle size distributions were prepared by crystallisation. (unboundmedicine.com)
Number distributions are ideally chosen when the technique measures individual particles. (horiba.com)
We report particle-size distributions for andesitic ash fall from vertical eruptions and clouds above block-and-ash flows at Volcán de Colima, Mexico, during 2004-2006. (ed.ac.uk)
Statistical analysis shows particle-size distributions of vertical eruptions are more leptokurtic (peaked) than co-pyroclastic samples. (ed.ac.uk)
State all numerical values in terms of SI units unless specific instrumentation software reports particle size information, including percentiles, indices, and distributions as tabulations and graphs using alternate units. (astm.org)
Thus, the particle size distributions inside and outside the SCI crater reveal that the subsurface layer beneath the SCI impact site is rich in fine particles with - 9 cm in size while the particles on the surface have a size distribution of a power-law form with shallower slopes at small sizes due to the deposition of fine ejecta from the subsurface layer. (iac.es)
Schematic illustration of tripod holding acoustic and optical instruments for profiling particle distributions in the bottom boundary layer. (usgs.gov)
Title : Ambient Size Distributions and Lung Deposition of Aerosol Dithiothreitol-Measured Oxidative Potential: Contrast between Soluble and Insoluble Particles Personal Author(s) : Fang, Ting;Zeng, Linghan;Gao, Dong;Verma, Vishal;Stefaniak, Aleksandr B.;Weber, Rodney J. (cdc.gov)

Particle agglomeration refers to the formation of assemblages in a suspension and represents a mechanism leading to the functional destabilization of colloidal systems. (wikipedia.org)
Alternatively, a colloidal gel may form in concentrated suspensions which changes its rheological properties. (wikipedia.org)
Colloidal particles may also remain dispersed in liquids for long periods of time (days to years). (wikipedia.org)
The stability of particles, colloidal or otherwise, is most commonly evaluated in terms of zeta potential. (wikipedia.org)
A well dispersed colloidal suspension consists of individual, separated particles and is stabilized by repulsive inter-particle forces. (wikipedia.org)
Often, colloidal particles are suspended in water. (wikipedia.org)
By better understanding driven colloidal self-organization, scientists have the potential to harness these particles and create new and enhanced materials-possibilities that are now largely untapped. (nyu.edu)
When the light is extinguished, the swimmers stop and the structures dissolve into individual diffusing colloidal particles. (nyu.edu)
This light scattering intensity is then used to estimate the particle size distribution of colloidal particles. (izon.com)
Interactions between colloidal particles can be modelled by particles grafted with polymers. (lu.se)
phdthesis{ff456b77-1b1f-45e8-ba29-1ba15973124b, abstract = {{Interactions between colloidal particles can be modelled by particles grafted with polymers. (lu.se)
Hypothesis: Colloidal particles that interact via a long-ranged repulsive barrier in combination with a very short-ranged attractive minimum can "polymerize" to form highly anisotropic structures. (lu.se)

nano-sized particles in solution are not static, therefore light scattering intensity is not constant and fluctuations can be measured. (izon.com)
How do nano sized particles behave differently compared to larger particles? (pmeasuring.com)
In this article, I will show that carbon dioxide is not the driver, but a (useful) indicator of fossil burning and production processes that create nano sized particles (and particulate matter) which do affect climate shifts via coagulation and nucleation. (scirp.org)

Our Titanium Nitride, TiN powder (CAS 25583-20-4) has high purity, narrow size distribution, high temperature strength, high fracture strength, good chemical resistance, good thermal shock resistance, low density and high hardness. (mis-asia.com)
The variable current laser ion beam gas phase method can prepare the particle diameter and Cu-Nicomponentcontrollable high uniform mixing type nanometer nickel copper alloy powder, high purity, particle size uniform, spherical shape, good dispersion, the sintering shrinkage of small, dark black powder. (robocup2009.org)
These nanometer particles are high in purity, have a good crystal structure and can be controlled easily. (actionext.com)

Three particles are 1 μm, three are 2 μm, and three are 3 μm in size (diameter). (horiba.com)
PM 2.5 - particles below 2.5 µm in aerodynamic diameter) due to the poor combustion performance of small-size combustors. (witpress.com)
Materials in this category include gelatin sponge, available as a powder of 40-60 µm in particulate diameter or in sheets that can be cut into large particles or into pledgets. (medscape.com)
Rock particle 16-64 mm in diameter (from Hiscock, 1990, based on Wentworth, 1922. (marlin.ac.uk)
This can be achieved by lowering the average particle diameter to 80-90 nm. (adhesivesmag.com)
The combination of a nonionic/anionic hydrophilic tail on Hitenol BC-10 (Figure 3) produces the desired particle diameter. (adhesivesmag.com)
The combination of small particle diameter and a polymerizable surfactant has produced latex with good blush resistance over a range of test conditions. (adhesivesmag.com)
These particles could vary in a shape and their average diameter is 5 nanometers, which allows including them into the group of harmful nanoparticles. (eurasiareview.com)
A novel ultra-fine dust electric reduction device (UFDRS-System), created by the author, diminishs to a size of less than 10 nano particles in diameter and thus prevents major electrical drift of nano structured particulates in the upper troposphere and lower stratosphere and contributes largely in purifying the air and thus reduces the effects of climate shifts. (scirp.org)

ATS' chemistry department performs this test using specialized equipment called a laser diffraction particle size analyzer. (atslab.com)
Some of the instruments visible here are a laser-diffraction particle sizer (labeled "LISST-100X"), CTD (at end of arm, with copper tape to prevent fouling), white acoustic Doppler velocimeter (left of CTD), multiwavelength optical backscatter sensor (being cleaned), 10-cm transmissometer (on top, with some blue antifouling paint), and screened water intake (right of CTD). (usgs.gov)

The secondary electrons produced by the sample are used routinely to characterize Particle Morphology . (upstate.edu)
Particle morphology is an important descriptor in IPA. (upstate.edu)
Analyse raw materials and products, e.g., the size and morphology of separate particles. (dti.dk)
Crystal structure and particle morphology of Nb16W5O55 and Nb18W16O93. (diamond.ac.uk)

To explore this, the research team developed light-activated self-propelled particles, "swimmers," from the micro-meter-sized particles in solution. (nyu.edu)
Active systems such as microorganisms and self-propelled particles show a plethora of collective phenomena, including swarming, clustering, and phase separation. (nature.com)

Therefore, it is necessary to evaluate and control the emission of air pollutants such as fine particles (i.e. (witpress.com)
Estimates of the number of particles in different size ranges show that co-pyroclastic samples contain much greater numbers of very fine particles than vertical eruption samples. (ed.ac.uk)
This is consistent with the claim that some particles are buried in fine particles of the subsurface origin included in ejecta from the SCI crater. (iac.es)

The powders were formed into tablets. (unboundmedicine.com)
Powders are dry masses of solid, discrete particles, which flow almost like a liquid and have been used in a variety of applications throughout several industries. (atslab.com)
1.2 This practice applies to particle size measurement methods, devices, detail levels, and data formats for dry powders, and wet suspensions of solids, gels, or emulsion droplets. (astm.org)

In the mash diet, the increase in particle size promoted a quadratic response in the weight of duodenum and jejunum + ileum. (unesp.br)
The particle size as given by TEM indicates increase in particle size. (ias.ac.in)

Being the subject of our work, in particular, we show that linear or polymer-like clusters can be formed if long-ranged repulsive barriers are combined with very short-ranged attractive minimums stimulating particles to form highly anisotropic structures. (lu.se)

Applied Technical Services performs particle size distribution analysis to measure the dimensions of particles in a sample powder. (atslab.com)
The shapes and sizes of the individual particles that make up a powder specimen can fundamentally change the performance characteristics of the final product in which they will be used - manufacturers understand the importance of characterizing their powder with a trusted testing provider for this exact reason. (atslab.com)
ATS' particle size analysis lab performs this service for clients who need to validate their powder products. (atslab.com)
Microfibrillar collagen is supplied as a powder with a particle size of approximately 50 µm. (medscape.com)
Ricin toxin can be extracted from castor beans, purified and treated to form a pellet, a white powder, or dissolved in water or weak acid to be released as a liquid. (cdc.gov)
by the airborne route through release of ricin in the form of a powder, or a mist, or re-suspension of ricin into the air from disturbed surfaces. (cdc.gov)

When the repulsive forces weaken or become attractive through the addition of a coagulant, particles start to aggregate. (wikipedia.org)
The overlap between the diffuse layers of two approaching particles results in a repulsive double layer interaction potential, which leads to particle stabilization. (wikipedia.org)
We demonstrate that the reversal in propulsion direction changes the nature of the hydrodynamic interaction from attractive to repulsive and can drive the particle assemblies to undergo both fusion and fission transitions. (nature.com)
We could detect a non-monotonic temperature dependent aggregation of particles from attraction to repulsion to attraction, where the polymer-mediated interactions were repulsive. (lu.se)

Interpreting results of a particle size measurement requires an understanding of which technique was used and the basis of the calculations. (horiba.com)
One goal in method development is to disperse aggregates to the single particle state prior to measurement. (horiba.com)
3.3 Reported particle size measurement is a function of both the actual particle dimension and shape factor as well as the particular physical or chemical properties of the particle being measured. (astm.org)
Caution is required when comparing data from instruments operating on different physical or chemical parameters or with different particle size measurement ranges. (astm.org)
1.1 This practice covers reporting particle size measurement data. (astm.org)
Note 1 - For information on reporting liquid particle measurement data, refer to Practice E799. (astm.org)

Unlike traditional light scattering techniques, TRPS simultaneously measures either the size and zeta potential of individual particles, or individual particle size and concentration. (izon.com)

Since particles are frequently negatively charged, multivalent metal cations thus represent highly effective coagulants. (wikipedia.org)
However, because of electrical charge, caused by friction or due to anthropogenic negatively charged nano structured particle, emissions will travel up to the lower stratosphere and become neutralized at the electro sphere level, and they do also have a tendency to move to the Arctic. (scirp.org)

The amount of sulfuric acid formed is dependent on coal type and the temperature history of particles in the furnace. (cdc.gov)
The intensity of Brownian motion is affected by particle size (as well as other factors such as temperature) and affects how light is scattered by the particles in solution. (izon.com)
High temperature urban/industrial combustion processes typically produce waste particles which are spherical in form. (upstate.edu)
Instead, we appear to form an unusual, metastable high temperature form of the material known as CuI-IV. (europa.eu)
These conditions include a very low ionic strength (the particles are weakly charged), a relatively high temperature, and a low particle concentration. (lu.se)
Furthermore, by ensuring that the ionic strength is very low, with a Debye length similar to the particle size, we could use temperature to control the hydrophobicity of the grafted PEG layer, and thus the strength of the short-ranged attraction. (lu.se)

Of sediment particles - the main characteristic for classifying rock-derived sediments. (marlin.ac.uk)
Percentage (by weight) of sediment particles of each grain-size fraction. (marlin.ac.uk)
If the sediment is buried deeply, it becomes compacted and cemented, forming sedimentary rock. (nps.gov)
Such particles do not sediment for a long time, forming air suspensions, which can be evenly distributed throughout the working space. (eurasiareview.com)

The polyol synthesis is a well-established method to form so-called "surfactant-free" nanoparticles (NPs). (mdpi.com)
Iron nanoparticles can be found in black, and are soluble in the nano Fe-colloid that is formed by water. (actionext.com)
The submicron iron particles in nanometer size are called iron nanoparticles. (actionext.com)
Tunable Resistive Pulse Sensing (TRPS) is a high-resolution technique for measuring nanoparticles, specifically designed to analyse particles in the size range of 40 nm to 11 µm. (izon.com)
Figure 1: Particle size distribution of lipid nanoparticles, as measured using different techniques. (izon.com)
Working as part of an international group of toxicologists scientists of the Far Eastern Federal University (FEFU) have found that harmful nanoparticles are formed in the process of arc welding using the most common types of electrodes today. (eurasiareview.com)
The smallest and consequently the most harmful nanoparticles form air suspensions in the human respiratory zone. (eurasiareview.com)
At the same time, the modernization of safety measures will not be possible without the detailed information gathering on how exactly the harmful welding nanoparticles are formed, what shape they are and what elements are contained in their composition. (eurasiareview.com)

Particularly dangerous are welding particles approaching the size of 1 nanometer. (eurasiareview.com)

Three mechanisms could lead to more nucleation mode particles formation: First, biodiesel fuel reduce soot emission and the solid soot surface lessen, and the ability of SOF condensation and adsorption on the soot particles weakens, so high super-saturation may lead to form new particles by nucleation. (sae.org)
The NanoAir® 10 Condensation Particle Counter (CPC) is a revolutionary new product from Particle Measuring Systems (PMS) . (pmeasuring.com)
What is a condensation particle counter (CPC) and how does it work? (pmeasuring.com)

During this process, particles dispersed in the liquid phase stick to each other, and spontaneously form irregular particle assemblages, flocs, or agglomerates. (wikipedia.org)
Particles may be irregular in appearance as a result of natural or anthropogenic abrading processes. (upstate.edu)

This is because the presence of larger particles skews measurements towards the large side, and DLS struggles to resolve particles if they are too similar in size. (izon.com)
Larger particles lodge in the throat (pharynx) and cause plague of the throat (pharyngeal plague). (msdmanuals.com)

In aerosols, airborne particles may equally aggregate and form larger clusters (e.g., soot). (wikipedia.org)
The Environmental Protection Agency issued a waiver of clean air standards for airborne particles in Imperial Valley, California, leaving valley residents at risk from a highly dangerous class of pollutants. (earthjustice.org)

Particle number and size distribution of the diesel engine were obtained using an Engine Exhaust Particle Sizer (EEPS). (sae.org)

Due to the nature of this single-particle approach, TRPS provides a level of insight that is unattainable with DLS, which is a bulk analytical technique that characterises multiple particles at once (Figure 1). (izon.com)

With control of light, magnets, and chemical attraction, these active particles bring biological organization to the materials world. (nyu.edu)
In this work, we use a simple approach to design novel synthetic active particles capable of performing fast propulsion direction reversals in combination with the switchable nature of interactions by simply changing the wavelength of light. (nature.com)

And since they are based on silver, they have an inherent antimicrobial effect and can be blended with polymers in a dry form rather than a paste because the particles do not pose an explosion hazard like aluminum flakes do, according to McCarthy. (plasticsnews.com)

Aerosols formed from coal combustion have a high concentration of sulfates at the surface (Amdur et al. (cdc.gov)
1.3 This practice does not concern particle concentration information. (astm.org)
Hexagonal form is predominant at some lower concentration. (ias.ac.in)
The average degree of polymerization could be adjusted by a variation of the particle concentration. (lu.se)

Particulate matter, also known as "soot," is particles of dust, smoke, and haze that are released or kicked up into the air by vehicle travel on dirt roads, industrial crushing and grinding, and windblown dust. (earthjustice.org)
Basic information on the nature and origin of particulate material can often be gathered from the size, shape and/or surface form of the individual particles. (upstate.edu)

Soot can also be formed when chemicals (many of the same that form smog) react and condense in the atmosphere. (earthjustice.org)
Soot is regulated based on the size of the particles. (earthjustice.org)

3.2 Particle size characterization information can be reported in three levels of detail in order to satisfy user's needs. (astm.org)

This is now automated with the Method Expert software features, exclusive to the LA-960 particle size analyzer. (horiba.com)

The size distribution inside the SCI crater also shows that the subsurface layer beneath the SCI impact site had a large number of particles with a characteristic size of - 9 cm, which is consistent with the previous evaluations. (iac.es)
The form in which mineral particles originally crystallized is often highly characteristic. (upstate.edu)

Filter collection efficiency for nanoscale particles. (cdc.gov)
When the particle size reaches the nanoscale, new properties are appeared like the blue shift of emission intensity [ 9 ]. (hindawi.com)

Deconvolution of grain-size histograms shows that co-pyroclastic samples have at least one subpopulation with a mode of 8.3-8.7 ϕ (2.4-3.1 μm). (ed.ac.uk)
Intrusive rocks have a characteristically coarse grain size. (nps.gov)
Their names are based on their grain size. (nps.gov)

Data regarding emissions of sulfur dioxide, which reacts with water in air to form sulfuric acid, were identified and are summarized below. (cdc.gov)

Clouston syndrome is a form of ectodermal dysplasia, a group of about 150 conditions characterized by abnormal development of some or all of the ectodermal structures, which include the skin, hair, nails, teeth, and sweat glands. (medlineplus.gov)
The idea behind this breakthrough arose from previous research into complex niobium oxides, with the team identifying structures that were associated with favourable diffusion properties, and might therefore offer extremely high diffusion rates with larger, micrometre-sized particles. (diamond.ac.uk)
This work proves that large, micrometre-sized particles can be used for high-rate electrodes with certain atomic structures and illustrates that nanoscaling is not always the most appropriate strategy to improve performance. (diamond.ac.uk)
Silicon Oxide SiO2 Hollow Nanospheres exhibits uniform particle sizes, hollow structures, large specific surface areas, uniform pores, hydrophilic properties, and can be modified to suit your needs. (hiphopgalaxy.com)

Micronization, as well as other particle size engineering techniques, enables effective and cost-efficient particle reduction of crystalline formulations which can aid solubility of compounds and improve the uniform distribution of API within formulations. (outsourcing-pharma.com)
It features uniform particle size and hollow structure. (hiphopgalaxy.com)

In coal burning power plants following the combustion phase the impurities in the coal almost invariably emerge as completely spherical particles. (upstate.edu)

These materials, due to better safe, chemical stability, excellent photo resistance, very high brightness, and long-lasting afterglow with no radio active radiations [ 5 ], form the important materials in various ceramics industries [ 6 ]. (hindawi.com)
Lowering particle size, however, may introduce a stability problem. (adhesivesmag.com)
The use of a polymerizable surfactant improves the particle stability and reduces the amount of free hydrophilic material available. (adhesivesmag.com)
A new inorganic material type, silica hollow microspheres are unique because of their narrow particle sizes, excellent dispersibility and stability. (hiphopgalaxy.com)

The mineral ice is the crystalline form of water (H2O). (usgs.gov)

In the atmosphere, sulfuric acid is generally in the form of small droplets, or it is adsorbed onto small particles. (cdc.gov)
However, there is a lack of regulations or laws to control air pollution from these small-size combustors in Japan. (witpress.com)
So far, small-size combustors have been characterized by their structural simplicity and low cost. (witpress.com)
It can be suggested that stable combustion should be performed under suitable conditions to control air pollutants emitted from biomass fuel, although small-size combustors are still not regulated to control PM 2.5 emission. (witpress.com)
In the case of particles, do they exist as small singlets or agglomerate quickly to a larger, more manageable size? (cdc.gov)
They used colloids-small particles suspended within a fluid medium-and discovered the basic organizing principles in natural flocking and how to use this to organize inorganic matter. (nyu.edu)
It is available in small to large custom particle sizes and is compatible in waterborne systems. (prweb.com)
The slope of the size distribution outside the crater at small sizes differs from the slope of the size distribution on the surface of Ryugu by approximately 1 or slightly less. (iac.es)
Small particles are only regulated on a 24-hour and annual average, while large particles are regulated on an hourly basis. (earthjustice.org)
Compared to large particles, small particles will diffuse more quickly in solution, causing more rapid fluctuations in the intensity of light scattering. (izon.com)
Carbon dioxide does not trigger the climate shifts, but is an indicator of exhaust of combustion processes that emit very small particles which drive these climate shifts. (scirp.org)
Small particles lodge in the lungs, causing pneumonic plague. (msdmanuals.com)

Finally, the equipment processes this data using an algorithm to characterize the sizes and shapes of particles in the sample according to several dimensions and categories. (atslab.com)

Combustion processes which generate carbon(aceous) particles (such as oil burning power plants) produce spherules which are well rounded and have a distinctive porous texture. (upstate.edu)
The present problem is that we produce huge amounts of air borne nano structured particles from combustion processes that never exist before. (scirp.org)

The objective of this study was to investigate the effect of the distribution in size of free-flowing particles for the evolution in tablet structure and tablet strength. (unboundmedicine.com)
It is concluded that the distribution in size of free-flowing particles is not critical for the tablet porosity but may give significant effects on tablet tensile strength due to a post-compaction reaction. (unboundmedicine.com)
Once the physical property is measured a calculation of some type generates a representation of a particle size distribution. (horiba.com)
Some techniques report only a central point and spread of the distribution, others provide greater detail across the upper and lower particle size detected. (horiba.com)
The particle size distribution can be calculated based on several models: most often as a number or volume/mass distribution. (horiba.com)
The easiest way to understand a number distribution is to consider measuring particles using a microscope. (horiba.com)
This approach builds a number distribution-each particle has equal weighting once the final distribution is calculated. (horiba.com)
Building a number distribution for these particles will generate the result shown in Figure 2, where each particle size accounts for one third of the total. (horiba.com)
If this same result were converted to a volume distribution, the result would appear as shown in Figure 2 where 75% of the total volume comes from the 3μm particles, and less than 3% comes from the 1μm particles. (horiba.com)
When presented as a volume distribution it becomes more obvious that the majority of the total particle mass or volume comes from the 3 μm particles. (horiba.com)
Our particle size distribution analysis team compares findings against criteria derived from either industry standards or client specifications to determine the sample's suitability for use. (atslab.com)
If your company needs particle size distribution analysis services, contact ATS today for a free quote - we take a closer look! (atslab.com)
The particle size distribution overlays and D10, 50, 90 vs. time plots can be viewed in greater detail, as seen below. (horiba.com)
The particle number size distribution of the engine shows unimodal or bimodal log-normal distribution. (sae.org)
We examine the size distribution of particles inside and outside an artificial impact crater (the SCI crater) based on the images taken by the optical navigation camera onboard the Hayabusa2 spacecraft. (iac.es)
The circumferential variation in particle size distribution inside the SCI crater is recognized and we interpret that major circumferential variation is caused by the large boulders inside the SCI crater that existed prior to the impact. (iac.es)
On the other hand, the size distribution outside the SCI crater exhibits the radial variation, implying that the deposition of ejecta from the SCI crater is involved. (iac.es)
Finally, we discuss a process responsible for this difference in particle size distribution between the surface and the subsurface layers. (iac.es)
Tunable Resistive Pulse Sensing (TRPS) offers an alternative route, and a clearer window into your true particle size distribution. (izon.com)
Although DLS data can be converted into a volume-based or number-based size distribution using sophisticated data processing techniques, the approach is often not sufficiently sensitive or accurate for this to be particularly insightful. (izon.com)
Woven-wire sieves present a variety of problems to the petroleum refiner who tries to use them for the determination of particle size distribution of cracking catalysts. (astm.org)
These micromesh sieves are recommended as a primary standard for testing size distribution of cracking catalysts because of their highly precise openings, which can be reliably measured with a microscope, and because they are available in the range of interest. (astm.org)
Equally, scientists are interested in the mechanisms of distribution of such particles throughout working spaces and beyond. (eurasiareview.com)

NYU physicists have developed a method for moving microscopic particles with the flick of a light switch. (nyu.edu)
Clastic sedimentary rocks may have particles ranging in size from microscopic clay to huge boulders. (nps.gov)

Suspending in the welding fume, these particles infiltrate the human body through the respiratory tract. (eurasiareview.com)
The size of the airborne particle determines where the bacteria lodge in the respiratory tract. (msdmanuals.com)

Also interesting: It seems that from particles to a certain size limit, objects are 'round', then they are not (like cells, trees, us, etc.) and from a certain threshold gravity makes them round again, then those objects looke like filaments, clusters not really round. (physicsforums.com)
Besides, we utilize Metropolis Monte Carlo (MC) simulation to investigate the behavioural change of these particles with a focus on the types of clusters formed. (lu.se)
Experiments: In this work, we specifically synthesize poly (ethylene glycol) (PEG) chains, grafted onto poly(styrene) (PS) particles in aqueous solution, and adjust the conditions so that strongly anisotropic and isolated polymer-like clusters are formed. (lu.se)

Particle agglomeration can be induced by adding salts or other chemicals referred to as coagulant or flocculant. (wikipedia.org)
Particle agglomeration can be a reversible or irreversible process. (wikipedia.org)
In the course of agglomeration, the agglomerates will grow in size, and as a consequence they may settle to the bottom of the container, which is referred to as sedimentation. (wikipedia.org)

Some of the sulfate associated with the aerosols is in the form of sulfuric acid. (cdc.gov)

Since doublet formation is a second order rate process, the units of this coefficients are m3s−1 since particle concentrations are expressed as particle number per unit volume (m−3). (wikipedia.org)
At Lund Observatory, we study how the discs form and evolve, turbulence in the disc, and the formation of planetesimals. (lu.se)

Given the results of the recent coal dust particle size survey and large-scale explosion tests, NIOSH recommends a new standard of 80% total incombustible content be required in the intake airways of bituminous coal mines. (cdc.gov)
This report gives the results of recent coal dust particle size surveys and large-scale explosion tests and how this data impacts rock dusting requirements for underground coal mines. (cdc.gov)
Slow cooling means the individual mineral grains have a long time to grow, so they grow to a relatively large size. (nps.gov)
Biologic sedimentary rocks form when large numbers of living things die. (usgs.gov)
An important criterion in these studies is that the particle size is large enough to allow structural analyses via microscopy. (lu.se)
An important criterion is that the particle size is large enough to admit structural analyses via confocal laser scanning microscopy (CLSM). (lu.se)

McCarthy said Starlight is available in particle sizes of 14-238 microns. (plasticsnews.com)

It is reported that vapor pollutants and particles emitted from the burning of agricultural residue waste biomass such as waste rice husk and straw have serious influences on visibility, human health, and global climate. (witpress.com)
Titanium nitride can be made by directly reacting titanium and nitrogen at 1200°C. The coating can be formed by a vapor deposition method using a mixed gas of titanium tetrachloride, nitrogen, and hydrogen. (mis-asia.com)

As a latex film forms, the adhesive particles initially come together at the side exposed to air (see Figure 1). (adhesivesmag.com)

Our current theories of physics cannot describe processes of the size of the Planck length, which means there has to be some new physics. (physicsforums.com)

These tiny particles often behave much differently than bulk samples of the same material, resulting in unique electrical, optical, chemical, and biological properties. (cdc.gov)

Biologic sedimentary rocks form from once-living organisms. (nps.gov)

The National Institute for Occupational Safety and Health (NIOSH) and MSHA conducted a joint survey to determine the range of coal particle sizes found in dust samples collected from intake and return airways of U.S. coal mines. (cdc.gov)
Planets form in protoplanetary discs around young stars as dust grains collide and stick together to form larger and larger bodies. (lu.se)
They are the fine dust and nano structured particles that cause the shifts of the climate in cells, as demonstrated in this article and results i.e. in more thunder and lightning, extreme weather, distinct droughts and precipitation patterns. (scirp.org)

Moreover, we show these active colloids can act as nucleation sites, and switch rapidly the interactions between active and passive particles, leading to reconfigurable assembly and disassembly. (nature.com)
A simplistic particle-particle potential of mean force is adopted for the simulations, but we also invoke a more elaborate theoretical model, to demonstrate that similar interactions can be obtained when the grafted chains are treated explicitly. (lu.se)

We could also investigate the eﬀect of polymer addition to the particle dispersions. (lu.se)

It was found that the shape and size of phosphor particles play important role for the phosphorescence properties. (hindawi.com)
The shape and size of the phosphor particles may depend on the crystal type and particle size of the starting materials as well as the method of preparation. (hindawi.com)
This is because particle shape is frequently indicative of composition and/or origin. (upstate.edu)

They may form from accumulated carbon--rich pfant material or from deposits of animal shells. (nps.gov)
Before I will elaborate on the thesis that nano particles are the main cause of climate shifts, we will discuss the contemporary consensus that we have global climate-change with an expectation that we will face at least 3 degrees Celsius overall warming caused by increases in the amount of carbon dioxide in the atmosphere and, show that in some respect, the reasoning about global change can be improved. (scirp.org)

The reverse process whereby particle agglomerates are re-dispersed as individual particles, referred to as peptization, hardly occurs spontaneously, but may occur under stirring or shear. (wikipedia.org)
a-c, Nb16W5O55 is built from blocks (red rectangles) of 4 × 5 (Nb,W)O6 octahedra, with adjoining blocks forming crystallographic shear planes. (diamond.ac.uk)

In NanoCuI we investigated the synthesis of new copper(I) iodide electrodes which in theory, should be capable of transporting charge much better, and could form a basis for new, efficient p-DSSCs. (europa.eu)

This type of information can be readily obtained by examining the particles in the scanning electron microscope (SEM). (upstate.edu)

Sulfate concentrations increase with decreasing particle size. (cdc.gov)

If a 300-nm particle is stable with 1.75% surfactant, an 85-nm particle would require 6.2% surfactant based on just the surface area. (adhesivesmag.com)

This parameter provides a readily quantifiable measure of interparticle repulsion, which is the key inhibitor of particle aggregation. (wikipedia.org)
A2}}} In the early stage of the aggregation process, the suspension mainly contains individual particles. (wikipedia.org)
Adsorption of oppositely charged species (e.g., protons, specifically adsorbing ions, surfactants, or polyelectrolytes) may destabilize a particle suspension by charge neutralization or stabilize it by buildup of charge, leading to a fast aggregation near the charge neutralization point, and slow aggregation away from it. (wikipedia.org)
Note that after 150 seconds a second larger peak (light blue) appears, indicating re-aggregation of the particles. (horiba.com)

Anatomy9

Organisms10

Diseases3

Chemicals and Drugs112

Analytical, Diagnostic and Therapeutic Techniques and Equipment55

Phenomena and Processes42

Disciplines and Occupations9

Technology, Industry, Agriculture41

Information Science2

Health Care9

Distributions9

Colloidal12

Nano-sized particles3

Purity3

Diameter9

Laser diffraction particle2

Morphology4

Self-propelled particles2

Fine particles3

Powders3

Increase in particle size2

Highly anisotropic structures1

Powder6

Repulsive4

Measurement6

Individual particle1

Negatively charged2

Temperature6

Sediment4

Nanoparticles8

Nanometer1

Condensation3

Irregular2

Larger particles2

Airborne particles2

Sizer1

Single particle1

Active particles2

Blended with polymers1

Concentration4

Particulate2

Soot2

Characterization1

Analyzer1

Characteristic2

Nanoscale2

Grain-size3

Emissions1

Structures4

Uniform2

Spherical1

Stability4

Crystalline form1

Small12

Characterize1

Combustion processes2

Distribution23

Microscopic2

Respiratory tract2

Clusters3

Agglomeration3

Aerosols1

Formation2

Large6

Microns1

Vapor2

Initially1

Processes1

Behave1

Sedimentary rocks form1

Dust3

Interactions2

Investigate1

Shape3

Carbon2

Shear2

Electrodes1

Microscope1

Concentrations1

Stable1

Aggregation4