Data & statistics on Particle size distributions of two different particle size fuels: Particle size distributions of two different particle size fuels., Particle size distribution (PSD) for different fuels at 7.0 MPa (a) and 10.2 MPa (b) injection pressure. Averaged over run times and time span when particle is detectable., Relative effects of a thermodenuder and different temperature conditions on the size-number 12 distribution (ELPI - greased sintered plates - sample from the CVS - secondary dilution ( x 10 ) with N2) of Diesel exhaust particles as measured over an hot NEDC test cycle ( Euro 3 - Common Rail Turbocharged Diesel car - Fuel : 270 ppm S ). The total particle numbers are drastically affected by the 13 presence ......
TY - GEN. T1 - Effect of particle size on densification of copper powder during electric-field activated sintering for micro-scale forming. AU - Huang, Kunlan. AU - Qin, Yi. AU - Yang, Yi. PY - 2014/9/9. Y1 - 2014/9/9. N2 - A novel Micro-forming technology, called electric-field activated sintering for micro-scale forming (Micro-FAST), was introduced for the forming of micro-components. The effect of particle size on densification is revealed for copper powder being sintered under the influence from electrical field and force-field during forming of micro-components. Three kinds of copper powders of different particle sizes ((i) average particle size of 0.5μm; (ii) average particle size of 30μm and (iii) the mixture powders with 20% weight of 30μm and 80% weight of 0.5μm) with no binder were used for the experiments. The results show that the density of the compact sintered with mixed copper powders is the largest due to more volume of liquid phase was formed in the particles contacts. The ...
Physical activity (PA) and high aerobic fitness protects against cardiovascular disease and early death possibly among others because of an anti-atherogenic impact on lipoprotein particle concentrations. The objective of this study was to determine the impact of PA and diet on lipoprotein particle concentrations. Thirty-one severely obese women (age 43.6 ± 10.2 years; body mass index 43.0 ± 6.3 kg m−2) participated in a 1-year lifestyle intervention with repeated measurements of lipoprotein particle subclass concentrations and size of very low density lipoprotein (VLDL), low density lipoprotein (LDL) and high density lipoprotein (HDL), as well as fat mass, PA and diet. Multiple regression was used to determine associations with change (Δ) in two principal components (PCs) describing lipoprotein distributions: ΔPC 1 LIPO (dominated by VLDL and LDL) and ΔPC 2 LIPO (dominated by large HDL and mean HDL particle size). ΔPA duration was the only variable that was significantly related to ΔPC ...
Hepatic steatosis (HS), the most frequent liver disorder, was reported to be an independent predictor of cardiovascular disease. HS, if combined with the metabolic syndrome (MetS), might have a synergistic effect on low-density lipoprotein (LDL) particle size. Carotid intima-media thickness (IMT) and plaque formation, and HS were diagnosed ultrasonographically, and the MetS was diagnosed using the ATP III criteria in 274 healthy workers (mean age ± SD, 43.5 ± 7.1 yrs). LDL particle size was measured with density gradient ultracentrifugation, and subfractions were classified as large, buoyant LDL I (27.2~28.5 nm) and small, dense LDL III (24.2~25.5). All participants were grouped into three categories: control, subjects with HS alone and those with both HS and the MetS. The subjects with HS alone were 84 (30.7%), whereas those with HS and the MetS were 46 (16.8%). LDL peak particle sizes showed significant negative correlations with carotid mean IMTs. LDL peak particle size and LDL I (%) decreased
Particle size analysis is not a topic that many people master, but it does have an undisputable role in the products they consume or use daily. It practically refers to collecting particles with the purpose of characterizing their size distribution. Particle size analysis represents a crucial process for numerous industries, from pharmaceuticals and building materials, food and beverages to cosmetics. Selecting the right method for completing this process is very important for obtaining optimal results. The most common particle size analysis and characterization methods include laser diffraction, dynamic light scattering and automated imaging.. Laser diffraction is the favorite method used by manufacturers because it works for a multitude of products and provides accurate results. They use light intensity to determine particle size. Dynamic light scattering is more adequate for macromolecules offering information about the size, weight and zeta potential or "charge" of the particle. The process ...
TY - JOUR. T1 - Effect of alginate size, mannuronic/guluronic acid content and pH on particle size, thermodynamics and composition of complexes with beta-lactoglobulin. AU - Stender, Emil G. P.. AU - Khan, Sanaullah. AU - Ipsen, Richard. AU - Madsen, Finn. AU - Hägglund, Per. AU - Abou Hachem, Maher. AU - Almdal, Kristoffer. AU - Westh, Peter. AU - Svensson, Birte. PY - 2018/1. Y1 - 2018/1. U2 - 10.1016/j.foodhyd.2017.09.001. DO - 10.1016/j.foodhyd.2017.09.001. M3 - Journal article. VL - 75. SP - 157. EP - 163. JO - Food Hydrocolloids. JF - Food Hydrocolloids. SN - 0268-005X. ER - ...
Advanced Textile Materials: Effects of Addition Amount, Particle Size Distribution and Average Particle Size of NaCl Porogen on the Pore Connectivity of Silk Fibroin (|i|SF|/i|) /Hydroxyapatite (|i|HA|/i|) Porous Composites
Biomass Pretreatment and Enzymatic Hydrolysis Dynamics Analysis Based on Particle Size Imaging - Volume 24 Issue 5 - Dimitrios Kapsokalyvas, Arnold Wilbers, Ilco A.L.A. Boogers, Maaike M. Appeldoorn, Mirjam A. Kabel, Joachim Loos, Marc A.M.J. Van Zandvoort
AIM: To determine distribution, size, and phenotype of low density lipoprotein (LDL) subclasses and examine the influence of plasma lipid concentrations on lipoprotein particle size in both healthy population and patients with myocardial infarction.
Data & statistics on Particle size distribution of sediments from South West Spit: Particle size distribution of sediments from South West Spit, Particle Size Distribution (psd) of sediment particles, Sieve sizes used for sediment particle distribution and the Wentworth sediment size categories (Buchanan 1984) Sieve Number...
FAVERO, André et al. Influence of feed form and corn particle size on nutrient digestibility and energy utilization by young turkeys. R. Bras. Zootec. [online]. 2012, vol.41, n.1, pp.86-90. ISSN 1806-9290. https://doi.org/10.1590/S1516-35982012000100013.. A digestibility trial with 16 to 21-day-old turkeys was conducted to study the effects of feed form and corn particle size on the coefficient of total intestinal tract apparent digestibility of dry matter (DM), nitrogen (N), ether extract (EE), aparent metabolizable energy (AME) and aparent metabolizable energy corrected by nitrogen balance (AMEn). A completely randomized experimental design in a 2 × 3 factorial arrangement - two feed forms (crumble and micropellet) and three average particle sizes of the corn (380, 606, 806 µm) - was applied. Three hundred and sixty 1-d-old B.U.T 9 male turkey poults were distributed into 36 cages, 6 replications of 10 birds, each one per treatment. Overall care of birds complied with welfare directive from ...
In civil engineering, there are situations where matters of the soil is of utmost importance. Nickzom Calculator solves calculation problems in soil mechanics.. Under Soil Mechanics, there is Soil Test and Particle Size Analysis section.. Today, I would love to introduce you all to Drag Force under Particle Size Analysis.. One can access Nickzom Calculator+ (Professional Version) - The Calculator Encyclopedia via any of these channels:. Web - https://www.nickzom.org/calculator-plus. Android (Paid) - https://play.google.com/store/apps/details?id=org.nickzom.nickzomcalculator. Apple (Paid) - https://itunes.apple.com/us/app/nickzom-calculator/id1331162702?mt=8. Parameters to get solution for Drag Force in Particle Size Analysis. ...
Determining which method of particle size analysis that provides the most accurate representation of your product can often be a difficult process. Many times, there isnt one correct answer and a combination of tools are required to determine the accurate result. Identifying the particle size is an integral part of determining if the milling or sieving process being performed is yielding good results. There are three most common forms of particle size analysis used on powdered materials.PSD or Particle Size Distribution, has been used extensively in countless applications in various industries to monitor, control, and investigate material properties.
Particle size analysis, zeta potential measurement, rheology, molecular weight and size measurement, size exclusion / gel permeation chromatography sec/gpc
Utilizing the sand deck, a Table can concentrate ore in the 20 mesh to +200 mesh particle size range. With the slime deck, it will concentrate ore in the 100 mesh to +325 mesh particle size range. The capacity for a lab size Table (13A) is between 30 and 50 pounds of feed per hour, with lower capacities when using the slimes deck.. Get Price And Support Online ...
Professional Particle Size Measurement Systems - Precision Particle Size Measurement for Laboratory & Research - Your Number 1 Partner for Research & Quality Management
Copper and copper compounds are commonly used as biocides against biofouling on surfaces exposed to seawater. Copper oxide, one of the most commonly used forms of copper biocide, can provide an efficient mechanism for fouling-free surfaces, resulting in substantial fuel savings and reduction of Greenhouse Gases (GHG) emissions. However, copper oxide is commercially formulated with different particle sizes, which can consequently lead to surfaces with different roughness conditions. The roughness effect of various sizes of copper oxide particles on the drag performance of antifouling coatings, and hence on the ship hull drag, has not been systematically studied in the past. Therefore, to investigate the effect of particle sizes on antifouling roughness and hydrodynamic characteristics, a number of different sized cuprous oxide pigments (with median size ranging from 2µm to 250µm) were applied on Newcastle Universitys (UNEW) standard acrylic flat test panels. Roughness characteristics were ...
Dry deposition of atmospheric particles is critically dependent on particle size and plays a key role in dictating the mass and number distributions of atmospheric particles. However, modeling dry deposition is constrained by a lack of understanding of controlling dependencies and accurate size-resolved observations. We present size-resolved particle number fluxes for sub-100-nm particle diameters (Dp) over a deciduous forest derived using eddy covariance applied to data from a fast mobility particle sizer. The size-resolved particle number fluxes in 18 diameters between 8 and 100 nm were collected during leaf-on and are statistically robust. Particle deposition velocities normalized by friction velocity (v d +) are approximately four times smaller than comparable values for coniferous forests reported elsewhere. Comparison of the data with output from a new one-dimensional mechanistic particle deposition model designed for broadleaf forest exhibits greater accord with the measurements than two ...
A scanning mobility particle sizer (SMPS) is an analytical instrument that measures the size and number concentration of aerosol particles with diameters from 2.5 nm to 1000 nm. They employ a continuous, fast-scanning technique to provide high-resolution measurements. The particles that are investigated can be of biological or chemical nature. The instrument can be used for air quality measurement indoors, vehicle exhaust, research in bioaerosols, atmospheric studies, and toxicology testing. Lev Solomonovich Ruzer; Naomi H. Harley (2013). Aerosols Handbook: Measurement, Dosimetry, and Health Effects (Second ed.). CRC Press. pp. 234-. ISBN 978-1-4398-5519-5. Retrieved 28 April 2013. Burtscher, H. (2005). "Physical characterization of particulate emissions from diesel engines: a review". Journal of Aerosol Science. 36 (7): 896-932. doi:10.1016/j.jaerosci.2004.12.001. ISSN 0021-8502 ...
Particle Size and Standard Deviation - CPMProduct 15 - 40 . . to particle size reduction. Increasing energy costs, increasing customer awareness of . choice for particle size reduction (grinding) applications. . For certain special applications such as high moisture grain, some form of a raked tooth with different . In many cases, this reduction in noise means a roller.dental grinding particle size customer case,Particle Grinding & Milling Services- Woodbury, MinnesotaAVEKAs particle grinding and milling services are useful for a variety of industries . Using Multiple Processes To Solve a Customers Needs · Milling and size . In each case, media, typically larger than the material to be ground, is added to a.Particle Size Reduction Solutions - PraterMany decades and 6,000 customers later, Praters products are some of the most versatile and . Prater Particle Size Reduction Application Case Studies.. ...
0091] As mentioned above, once formed, the abrasive aggregates may be classified, or separated into various size ranges as desired before being applied to a substrate or otherwise utilized in a polishing operation. In addition to the abrasive aggregates, a resultant powder may include an amount of material smaller than the desired aggregate size. The particulate material composed of the thus formed aggregates generally has an average particle size within a range of about 10 to about 2500 microns. Typically, the aggregate has an average particle size not less than about 10 microns, not less than about 20 microns, not less than about 30 microns, or not less than about 50 microns, not less than 100 microns, not less than 200 microns. Upper limits for average particle size are driven by particular end use applications and generally the abrasive aggregate average particle size is not greater than about 2500 microns, not greater than about 1500 microns, not greater than about 1000 microns, not greater ...
... Across most sectors, the particle size of products and materials is a critical parameter in their manufacture. Changing the particle size distribution of a material has a massive impact on its characteristics and its behaviour either during its manufacture, within the final product or on its effects within the environment.For example, the particle size distribution of a product like coffee greatly impacts its taste and quality. As discussed in Malvern Panlyticals Application Note : MRK781-01.The key factors which need to be considered include:• Dissolution rate• Flowability / Pump rates• Stability• Appearance• Safety• Environmental ImpactA current hot topic both nationally and worldwide is surrounding how a materials particle size distribution effects the safety of that material. For example, if the material has a high fraction of particles within the respirable range - PM1, PM2.5 or PM10, how does this impact on the health of either the workers in the factories and
OBJECTIVE: To test the hypothesis that children and adults with a history of Kawasaki disease (KD) are more likely to have abnormal lipoprotein particle profiles that could place them at increased risk for developing atherosclerosis later in life. STUDY DESIGN: Fasting serum samples were obtained from 192 children and 63 adults with history of KD and 90 age-similar healthy controls. Lipoprotein particle concentrations and sizes were measured by nuclear magnetic resonance spectroscopy (LipoScience Inc, Raleigh, North Carolina), and serum was assayed for total cholesterol (TC), triglycerides, and high-density lipoprotein (HDL) cholesterol (HDL-C). Low-density lipoprotein (LDL) cholesterol was estimated using the Friedewald formula. Data were analyzed in a least-square means model, with adjustment for age and sex and with the use of Holm correction for multiple comparisons. RESULTS: Compared with respective control groups, both adult and pediatric subjects with KD had significantly lower mean very ...
Background Feeding alfalfa hay is often recommended for its buffering components, like protein and calcium, to prevent lesions of the gastric mucosa in horses. Until now, there has been no information...
In 2016, Metals and Additives LLC, a leading manufacturer and supplier of powder additives for the battery and plastics industries, purchased the Mastersizer 3000 from Malvern Panalytical. Here, Justin Hoover, Quality Manager at MAC, discusses the companys requirement for an instrument that was more efficient, versatile and accurate for particle size analysis. He also explains the decision-making process in choosing a new system, the benefits of the Mastersizer 3000 and the companys experience of working with Malvern Panalytical.. The need for accuracy and efficiency. "We are always looking to expand our capabilities and applications so that our products can benefit our customers in a wide array of industries, even beyond plastics and batteries. Particle size analysis is a key part of the testing of our materials and products," says Justin Hoover, Quality Manager, Metals and Additives LLC, US.. The majority of the products Metals and Additives LLC manufacture are dry powders and, consequently, ...
The INtegrated Mapping FOr the Sustainable Development of Irelands MArine Resource (INFOMAR) programme is a joint venture between the Geological Survey of Ireland (GSI) and the Marine Institute (MI). The programme is the successor to the Irish National Seabed Survey (INSS) and concentrates on creating integrated mapping products related to the seabed. INFOMAR Seabed Samples Particle Size Analysis represent locations where samples have been taken and particle size analysis (PSA) carried out on samples.. Sediment type classification based on percentage sand, mud and gravel (after Folk 1954). Every sediment is a mixture of grains of varying sizes. It groups grains into mud, sand and gravel on the basis of their diameter. The relative proportion of the grains in the three categories is then used to describe the sediment and is displayed in a diagram commonly called a "Folk triangle". This classification has 15 terms to describe the seabed sediments.. Samples from the seabed are taken by grab and ...
The INtegrated Mapping FOr the Sustainable Development of Irelands MArine Resource (INFOMAR) programme is a joint venture between the Geological Survey of Ireland (GSI) and the Marine Institute (MI). The programme is the successor to the Irish National Seabed Survey (INSS) and concentrates on creating integrated mapping products related to the seabed. INFOMAR Seabed Samples Particle Size Analysis represent locations where samples have been taken and particle size analysis (PSA) carried out on samples.. Sediment type classification based on percentage sand, mud and gravel (after Folk 1954). Every sediment is a mixture of grains of varying sizes. It groups grains into mud, sand and gravel on the basis of their diameter. The relative proportion of the grains in the three categories is then used to describe the sediment and is displayed in a diagram commonly called a "Folk triangle". This classification has 15 terms to describe the seabed sediments.. Samples from the seabed are taken by grab and ...
In order to design civil structures that are supported by soils, the shear strength parameters of soils are required. Due to the large particle size of coarse-grained soils, large direct shear tests should be performed. In this study, large direct shear tests on three types of coarse grained soils (4.5 mm, 7.9 mm, and 15.9 mm) were performed to evaluate the effects of particle size on the shear behavior of coarse grained soils with/without geogrid reinforcements. Based on the direct shear test results, it was found that, in the case of no-reinforcement, the larger the maximum particle size became, the larger the friction angle was. Compared with the no-reinforcement case, the cases reinforced with either soft geogrid or stiff geogrid have smaller friction angles. The cohesion of the soil reinforced with stiff geogrid was larger than that of the soil reinforced with soft geogrid. The difference in the shear strength occurs because the case with a stiff geogrid has more soil to geogrid contact area,
Modifying particle size in a laboratory spray-dryer setup can be quite challenging, especially if particles with larger diameter are requested. Altering process and formulation parameters with the most significant impact on particle size is not obvious but can negatively affect product characteristics such as residual moisture or yield.. In the first part of the webinar, after the introduction to pharmaceutical and laboratory spray drying, the systematic tool "Design-of-Experiments" (DoE) is introduced. DoE enables the control of product particle size while focusing on product quality. This will be shown exemplary for the manufacture of biodegradable polymer particles from organic solutions.. Based on the knowledge from the DoE experiments, the second part focuses on an in situ microencapsulation method. Encapsulation is done with a dual-liquid feed coaxial nozzle, whereby the emulsion for solvent evaporation is created at the tip of the nozzle. This allows minimizing of contact time and ...
Inline In-Situ Particle Size Measurement, Analysis and Characterization. Size distribution of droplets, crystals, cells. Online Particle Analysis, Inspection and Monitoring
Inline In-Situ Particle Size Measurement, Analysis and Characterization. Size distribution of droplets, crystals, cells. Online Particle Analysis, Inspection and Monitoring
NANOCAT® Superfine Fe2O3 can be used as catalyst or as an oxidant for CO oxidation, depending on the availability of the 02. FIG. 3 shows a comparison between the catalytic activity of Fe203 nanoparticles (NANOCAT® Superfine Iron Oxide (SFIO) from MACH I, Inc., King of Prussia, PA) having an average particle size of about 3 nm, versus Fe203 powder (from Aldrich Chemical Company) having an average particle size of about 5/xm. The Fe203 nanoparticles show a much higher percentage of conversion of carbon monoxide to carbon dioxide than the Fe203 having an average particle size of about 5jum. As shown in FIG. 3, 50 mg of the NANOCAT® Fe203 can catalyze more than 98% CO to C02 at 400 C in an inlet gas mixture of 3.4% CO and 20.6% 02 at 1000 ml/minute. Under identical conditions, the same amount of the a-Fe203 powder with a particle size of 5 /-tm, can only catalyze about 10% CO to C02. In addition to that, the initial light off temperature for NANOCAT® Fe203 is more than 100 °C lower than that ...
The contribution of emissions from agricultural facilities is rapidly becoming a major concern for local and regional air quality. Characterization of particle properties such as physical size distribution and chemical composition can be valuable in understanding the processes contributing to emissions and ultimate fate of particulate matter from agricultural facilities. A measurement campaign was conducted at an Iowa, deep-pit, three-barn swine finishing facility to characterize near-source ambient particulate matter. Size-specific mass concentrations were determined using minivol samplers, with additional size distribution information obtain using optical particle counters. Particulate composition was determined via ion chromatographic analysis of the collected filters. A thermal-CO2 elemental/organic carbon analyzer measured particulate carbon. The chemical composition and size distribution of sub-micron particles were determined via real-time aerosol mass spectrometry. Primary particulate was not
Its usually known that the particle size and particle shape are two irrelevant concepts. But our research shows that the token of particle size is not only related to particle shape, but also related to particle measurement methods. This paper takes sheetlike graphite micropowder for example and gets the function relation between particle shape factor and particle size by analyzing the particle distribution data between laser diffraction and sedimentation. This research provides a new approach for the study of particle shape ...
TY - JOUR. T1 - Effect of particle size on new bone formation in vivo using calcium phopshate glass. AU - Moon, Hyun Ju. AU - LeGeros, Racquel Z.. AU - Kim, Kyoung Nam. AU - Kim, Kwang Mahn. AU - Choi, Seong Ho. AU - Kim, Chong Kwan. AU - Lee, Yong Keun. PY - 2007/1/24. Y1 - 2007/1/24. N2 - The purpose of this study was to compare the bone regenerative effect of calcium phosphate glass according to the particle size in vivo. We prepared two different sizes, that is 400 μm and 40 μm, of calcium phosphate glass powder using the system CaO-CaF2-P2O5-MgO-ZnO. Critical-sized calvarial defects were created in 60 male Sprague-Dawley rats. The animals were divided into 3 groups of 20 animals each. Each defect was filled with a constant weight of 0.5 g calcium phosphate glass powder mixed with saline. As controls, the defect was left empty. The rats were sacrificed 2 or 8 weeks after postsurgery, and the results were evaluated using histological as well as histomorphometrical studies. The particle size ...
Zetasizer Nano S90 for molecular / particle size measurement using Dynamic Light Scattering. Also measures molecular weight by Static Light Scattering.
Drummond, Jennifer D.; Larsen, Laurel G.; González-Pinzón, Ricardo; Packman, A.; Harvey, Judson W. Journal of Geophysical Research-Biogeosciences 123 : doi:10.1029/2017JG004212 (2018) DIGITAL CSIC. Stream restoration goals include reducing erosion and increasing hyporheic exchange to promote biogeochemical processing and improve water quality. Little is known, however, about fine particle dynamics in response to stream restoration. Fine particles (,100 μm) are exchanged with transient storage areas near and within streambeds and banks. Fine particle retention directly impacts carbon and nutrient cycling by supporting benthic and hyporheic primary production, but overaccumulation of fine particle deposits can impair metabolism by burying benthic biofilms and reducing streambed permeability. We analyzed the transport and retention of water and fine particles at both the reach and local scales in a restored urban stream, 9 years postrestoration. We injected conservative solute and fine particle ...
In the sand and stone aggregate market stones or sand the customers need to have a certain standard particle size for example gravel is divided into 510 mm 1020 mm 16315 mm sand is divided into coarse sand average particle size of 05 mm or more medium sand average particle size of 035.
Feed intake was highest for the 8mm particle size and lowest for the 2mm particle size, and average egg weight was highest when hens were offered rations containing 2mm particle sizes (see table). Particle size had no significant effect on yolk colour index or percentage shell. However, there was a tendency for fewer eggs to be produced per day with diets containing 8mm particle sizes. The whole wheat plus balancer ration significantly reduced feed intake, increased average egg weight and reduced feed cost per 100 eggs (£2.35 vs. £3.18). There were no significant differences in egg production or quality as a result of mash, crumbs or pellets but it was found that the crumbed ration reduced feed intake and hence feed cost per 100 eggs.. ...
In this study, sol-gel titania implants used in the controlled rate of drug release of valproic acid to the temporal lobe of the brain were optimized to insure that the correct drug dose is delivered. In previous studies we have reported that the rate of drug release to the temporal lobe of Wistar rats is dependent on (a) porosity and, (b) chemical linteractions between valproic acid and the surface hydroxyl groups of titania. When the sol-gel process is used in the synthesis, the concentration of water used in the hydrolysis reaction is an important variable in the degree of hydroxylation, porosity and structural defects in the framework of the nanostructured titanium oxide resevoir. The alcoxide /water ratio was systematically varied during the synthesis of the reservoir. Water was added in a dropwise manner during the hydrolysis of titanium n-butoxide. The valproic acid was incorporated into the framework during the synthesis. The resultant gels were dried under mild conditions over a 3 week period
At Stand 5-413, FRITSCH is displaying laboratory mills for grinding and mixing different materials and mixtures, as well as instruments for particle size analyses according to laser diffraction, dynamic light scattering, dynamic image analysis and sieving. Instruments on display include: Millsfor crushing, micro-milling, mixing and homogenizing hard, brittle, fibrous, elastic and soft materials (dry or in suspension); Instruments for particle size determinationby means of static and dynamic light scattering, dynamic image analysis and sieving; Laboratory instruments for dividingof dry and wet samples, controlled sample feeding . . .
The "bad" cholesterol, LDL, comes in large and small particles. Large LDL particles are relatively benign, but small LDL particles can more easily oxidize and stick to artery linings, forming hardened plaques. Doctors wanted to explore a link between nutrients such as B vitamins and LDL particle size. In one study, researchers measured blood fats and folate levels in 255 hospital workers. Scientists found a strong link: as blood levels of folate rose, LDL particle size increased; HDL, the "good" cholesterol, also increased; and triglycerides decreased. Doctors believe folate may help enhance and control LDL particle size, reducing chances of hardening of the arteries. Reference: Journal of Atherosclerosis and Thrombosis; 2010 Dec 26, Vol. 17, No. 12 ...
Baseline characteristics were obtained in 2103 men initially free of IHD, among whom 114 developed IHD during a 5-year follow-up period. These 114 case patients were matched with healthy control subjects for age, body mass index, smoking habits, and alcohol intake. LDL peak particle diameter (PPD) was measured a posteriori in 103 case-control pairs by nondenaturing gradient gel electrophoresis of whole plasma. Conditional logistic regression analysis of the case-control status revealed that men in the first tertile of the control LDL-PPD distribution (LDL-PPD , or = 25.64 nm) had a 3.6-fold increase in the risk of IHD (95% CI, 1.5 to 8.8) compared with those in the third tertile (LDL-PPD , 26.05 nm). Statistical adjustment for concomitant variations in LDL cholesterol, triglycerides, HDL cholesterol, and apolipoprotein B concentrations had virtually no impact on the relationship between small LDL particles and the risk of IHD ...
D6913 - 04e1 Standard Test Methods for Particle-Size Distribution (Gradation) of Soils Using Sieve Analysis , gradation, grain size, particle size, particle-size distribution, sieve analysis, sieving,
Abstract Standalone screen (SAS) design conventionally relies on particle size distribution (PSD) of the reservoir sands. The sand control systems generally use D-values, which are certain points on the PSD curve. The D-values are usually determined
Bettersize particle size distribution analyzer provide particle size analysis and sand content analysis data of soil and sediment samples. Bettersize instruments can help you to rapidly obtain particle size and shape data of soil, carry out effective evaluation of soil properties in a variety of applications.
... Find the Right and the Top bauxite mill particle size for your coal handling plant!, a mining machines manufacturer in china focus on your local solutions service bauxite mill particle size bauxite particle size Coal processing system Machine for sale But the mill to the Bauxite particle size range, a reasonable ball hard, not easy to get the ... ...
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ROSA-GOMEZ, Isaías De la; OLGUIN, María Teresa e ALCANTARA, David. Silver-Modified Mexican Clinoptilolite-Rich Tuffs With Various Particle Sizes as Antimicrobial Agents Against Escherichia coli. J. Mex. Chem. Soc [online]. 2010, vol.54, n.3, pp.139-142. ISSN 1870-249X.. Water disinfection was performed using Mexican clinoptilolite-rich tuffs from Oaxaca and Sonora with different particle sizes exchanged with silver ions. Samples of Escherichia coli (ATCC 8739) suspended in distilled water (wastewater-like) and municipal waste-water containing coliforms (E. coli as a representative microorganisms from the coliform consortium), were treated in this investigation. E. coli is considered an indicator of microbiological contamination of water, so levels of this microorganism after zeolite treatment indicate how well the disinfection process worked. It was found that particle size, the amount of silver in the modified zeolitic rocks, the origin of the zeolitic material and the type of aqueous media ...
[116 Pages Report] Check for Discount on Global Particle-Size Analyzers Market Professional Survey Report 2017 report by QYResearch Group. This report studies Particle-Size Analyzers in Global market, especially...
Particle size plays an important role in mining and mineral separation. Particle size analysis ensures effectiveness of comminution (grinding).
There are many factors that affect the quality of wooden fuel pellets, from raw materials to pellet production process. Among the factors, raw materials compositions, mechanical durability, moisture contents, and particle size distribution were studied. Experimental raw materials of different percent weights were introduced to industrial fuel pellet production, micro-chips in part-1 experiment and peat in part-2 experiment. Pellets made from these experimental raw material mixtures were tested for their mechanical strength (also known as durability) according to Swedish standards SS 187180 in Part 1 experiment, and European Technical Specification CEN/TS 15210-1 in Part 2 Experiment. Moisture contents of these pellets were also determined. In part-1 experiment, particle size distributions of raw materials and final micro- chips pellets were analyzed. Mapping of pellet production process, bio-energy combine power and heating plant integrated with pellet production were illustrated along with ...
The particle-size distribution (PSD) of a powder, or granular material, or particles dispersed in fluid, is a list of values or a mathematical function that defines the relative amount, typically by mass, of particles present according to size. Significant energy is usually required to disintegrate soil, etc. particles into the PSD that is then called a grain size distribution. The PSD of a material can be important in understanding its physical and chemical properties. It affects the strength and load-bearing properties of rocks and soils. It affects the reactivity of solids participating in chemical reactions, and needs to be tightly controlled in many industrial products such as the manufacture of printer toner, cosmetics, and pharmaceutical products. Particle size distribution can greatly affect the efficiency of any collection device. Settling chambers will normally only collect very large particles, those that can be separated using sieve trays. Centrifugal collectors will normally collect ...
We specialise in particle size analysis Melbourne including bulk particle analysis, micro particle analysis of water, sediments, powders and particle counting.
The production and use of engineering nanomaterials (ENMs) leads to the release of manufactured or engineered nanoparticles into environment. The quantification and characterization of ENMs are crucial for the assessment of their environmental fate, transport behavior and health risks to humans. To analyze the size distribution and particle number concentration of AgNPs and AuNPs in environmental water and track their stability at low number concentration, a systematic study on SP-ICPMS was presented. The Poisson statistics was used to discuss the effect of dwell time and particle number concentration theoretically on the detection of NPs in solution by SP-ICPMS. The dynamic range of SP-ICPMS is approximately two orders of magnitude. The size detection limits for silver and gold nanoparticle in ultrapure water are 20 and 19nm respectively. The detection limit of nanoparticle number concentration is 8×104particlesL−1. Size distribution of commercial silver and gold nanoparticle dispersions is ...
In one general aspect, an instrument for measuring characteristics of particles suspended in a fluid is disclosed. It includes a closed wall surface defining a fractionation channel having a input opening, an output opening, and a flow axis that spans downstream from the input opening for the channel to the output opening. A force application subsystem has a force application output oriented perpendicular to at least part of the flow axis of the fractionation channel. A particle characteristic measurement subsystem is located hydraulically downstream from at least a portion of the closed wall surface defining the fractionation channel, and includes a sensor positioned to sense a property of the suspended particles in the potential measurement subsystem as well as a signal output responsive to the sensor. A result processor has a signal input responsive to the signal output of the particle characteristic measurement subsystem, zeta potential processing logic responsive to the particle characteristic
Whether youre in the early R&D or commercial phase, reliable, accurate particle size analysis is critical to the success of your compound. Rather than purchasing costly equipment or developing in-house expertise, many companies find that services specializing in drug substance testing can deliver more robust results, with staff experienced in particle size analysis. Catalent offers a number of particle size testing options to support all production activities and as a stand-alone service for products that do not require micronization or milling ...
A photographic color diffusion transfer element is disclosed wherein said element comprises a single dimensionally stable support, wherein said support comprises an opaque and light reflecting layer, and coated thereon in reactive association and in sequence (1) a mordant layer for binding diffusible dyes, (2) a stripping layer, (3) one or more layers comprising radiation sensitive silver halide, a solid particle dispersion of a diffusible-dye forming compound, or radiation sensitive silver halide and a solid particle dispersion of a diffusible-dye forming compound, and (4) a barrier layer comprising a polymer that (a) allows the passage of solutions for processing said element when said element is contacted with an external processing bath and (b) blocks the diffusion out of said element of the diffusible dye formed from said solid particle dispersion of a diffusible-dye forming compound when said element is contacted with an external processing bath. A further embodiment of a photographic color
Disclosed are a particle size measuring device and a particle size measuring method that are capable of measuring particle sizes without making contact with the target particles, and which allow for measuring a greater range of particle sizes. A plurality of laser beams of different wavelengths is constantly emitted by a light source (2), striking the particle to be measured in suspension. From among the scattered light that is scattered by the particle being measured, and with the laser beam wavelengths being varied, first scattered light, having a first plane of polarization, and second scattered light, having a second plane of polarization that is perpendicular to the first plane of polarization, are detected by a scattered light detection device (5). The luminosities of the first scattered light and the second scattered light that are detected by the scattered light detection device (5) are expressed numerically, and the polarization ratio is found therefrom. The size of the particle being measured
Die Erfindung betrifft die Erkennung von Teilchengrößen, insbesondere eine Erkennung von Teilchengrößen unter Ver wendung von Lichtstreuung. The invention relates to the detection of particle sizes, in particular a detection of particle sizes below Ver application of light scattering. Einrichtungen zum Bestimmen von Teilchengrößen sind jetzt allgemein bekannt und ebenso, daß Laserstrahlen dafür eingesetzt werden können und bisher eingesetzt worden sind, um Teilchengrößenmessungen durchzuführen. Means for determining particle sizes are now well known and also that laser beams can be used for this and have been previously used to particle size measurements carried out. Siehe beispiels weise die US-PS 34 06 289. Außerdem zeigt und beschreibt die US-PS 45 71 079 eine Teilchengrößenmessung mit einem Laser mit offenem Hohlraum (aktiv) und die US-PS 45 94 751 eine Messung mit passivem Hohlraum; See example, US-PS 34 06 289. In addition, shows and the US-PS 45 71 079 describes a particle ...
beneficiation of indian high alumina iron ore fines particle size measurement of the iron ore fines was performed using the standard laboratory sieve shaker and the results are presented in figure 1. from the figure it is revealed that average particle size (i.e d 50) the ore fines is 127 microns and 80% of the materials (by weight) have size More Info > Live Chat ...
Home Decorating Style 2016 for Dividing Positive and Negative Fractions Luxury Particle Size Distribution for Sand Used Subsequently Divided Into, you can see Dividing Positive And Negative Fractions Luxury Particle Size Distribution For Sand Used Subsequentl and more pictures for Home Interior Designing 2016 14604 at newartwestmidlands.org.
In this work, the influences of ethanol and iso-butanol blended with gasoline on engine-out and post three-way catalyst (TWC) particle size distribution and number concentration were studied using a General Motors (GM) 2.0L turbocharged spark ignition direct injection (SIDI) engine. The engine was operated using the production engine control unit (ECU) with a dynamometer controlling the engine speed and the accelerator pedal position controlling the engine load. A TSI Fast Mobility Particle Sizer (FMPS) spectrometer was used to measure the particle size distribution in the range from 5.6 to 560 nm with a sampling rate of 1 Hz. U.S. federal certification gasoline (E0), two ethanol-blended fuels (E10 and E20), and 11.7% iso-butanol blended fuel (BU12) were tested. Measurements were conducted at 10 selected steady-state engine operation conditions. Bi-modal particle size distributions were observed for all operating conditions with peak values at particle sizes of 10 nm and 70 nm ...
Track changes in real-time ✔ Control particle size, count, and shape ✔ Reveal hidden mechanisms ✔ Consistent particles in both Lab and Plant with probe-based particle size analyzers
Beckman Coulters reliable particle size analysis solutions use the Coulter principle, light scattering, laser diffraction and other technologies.
The influence of metal particle size of monometallic and bimetallic supported catalysts (Au, Pd, Au-Pd)/C was studied using as a model reaction the liquid phase oxidation of glycerol. By tuning the metal particle size from 2 to 16 nm a progressive decrease of activity and simultaneously an increase in the selectivity to sodium glycerate was observed. Moreover, the influence of the temperature was studied and it was found that by increasing the temperature, only with a large particle size the formed glycerate was retained and not over-oxidized to tartronate.. ...
Particle properties such as size, shape and density play significant roles on particle flow and flame propagation in pulverized fuel combustion and gasification. A drop tube furnace allows for experiments at high heating rates similar to those found in large-scale appliances, and was used in this study to carry out experiments on pulverized biomass devolatilization, i.e. detailing the first stage of fuel conversion. The objective of this study was to develop a particle conversion model based on optical information on particle size and shape transformation. Pine stem wood and wheat straw were milled and sieved to three narrow size ranges, rapidly heated in a drop tube setup, and solid residues were characterized using optical methods. Different shape descriptors were evaluated and a shape descriptor based on particle perimeter was found to give significant information for accurate estimation of particle volume. The optical conversion model developed was proven useful and showed good agreement ...
TY - JOUR. T1 - The effect of loading and particle size on the oxygen reaction in CGO impregnated Pt electrodes. AU - Lund,Anders. AU - Hansen,Karin Vels. AU - Jacobsen,Torben. AU - Mogensen,Mogens Bjerg. PY - 2012. Y1 - 2012. N2 - Porous platinum electrodes impregnated with Gd x Ce1−x O2−δ (CGO) are investigated to characterise how nano-sized CGO grains affect the oxygen reaction. Impedance measurements were performed at temperatures between 450 and 750 °C and at oxygen partial pressures of 0.2 and 5 × 10−5 bar for electrodes with various CGO loadings and electrodes annealed at various temperatures. The morphology was characterised by scanning electron microscopy and the CGO grain size was determined from X-ray diffraction peak broadening. The results showed that the polarisation resistance decreased with increasing CGO loading and increasing annealing temperature. CGO facilitates transport of oxygen ions thereby increasing the effective triple-phase boundary.. AB - Porous platinum ...
Description :The Mastersizer 3000 laser diffraction particle size analyzer delivers rapid, accurate particle size distributions for both wet and dry dispersions with the minimum of effort. Measuring over the nanometer to millimeter particle size ranges, it packs exceptional performance into the smallest of footprints, bringing operator-independent measurements that every user can rely on.
In the context of the international experimental campaign Hygroscopic Aerosols to Cloud Droplets (HygrA-CD, 15 May to 22 June 2014), dry aerosol size distributions were measured at Demokritos station (DEM) using a Scanning Mobility Particle Sizer (SMPS) in the size range from 10 to 550 nm (electrical mobility diameter), and an Optical Particle Counter (OPC model Grimm 107 operating at the laser wavelength of 660 nm) to acquire the particle size distribution in the size range of 250 nm to 2.5 μm optical diameter. This work describes a method that was developed to align size distributions in the overlapping range of the SMPS and the OPC, thus allowing us to retrieve the real part of the aerosol equivalent refractive index (ERI). The objective is to show that size distribution data acquired at in situ measurement stations can provide an insight to the physical and chemical properties of aerosol particles, leading to better understanding of aerosol impact on human health and earth radiative balance. The
New York, NY, October 29, 2019 (WiredRelease) - The Global Nanometer Particle Size Analyzers Market report conveys data of market measure (volume and esteem), and the divides markets by regions, types, actual drivers, models, challenges, applications, yearly development rate, figures, and organizations. The Nanometer Particle Size Analyzers market report provides a basic overview of the industry analysis which is provided for New York, NY, October 29, 2019 (WiredRelease) - The Global Nanometer Particle Size Analyzers market including definitions, classifications, applications, and industry chain structure, development history, competitive landscape investigation, and major countrys developing status. Nanometer Particle Size Analyzers market is anticipated to ascend at a steady rate and will post CAGR (compound annual growth rate) between 2020-2029 Resp.. The report global Nanometer Particle Size Analyzers Industry 2020 is an expert review, detail investigation that combines fragments of ...
Nanoparticles with a mean diameter of 485 nm were readily prepared from a 2% PLGA solution in DCM at 32W sonication power (Tab. 1). The size distribution was mono-modal with a slight tailing (Fig. 3A). Nanoparticle sizes extended from 175 to 755 nm according to the 10 and 90% percentiles. Repeatability of the production process was consistently good, as reflected by only minor variability in the mean particle diameter. Lowering the emulsions residence time in the sonic field from 14 to 7s had only a minor impact on the nanoparticle size. A reduction of the sonication power from 32 to 25W, however, resulted in a significant increase of the mean particle size from 485 to 700nm, caused by a more pronounced tailing of the size distribution curve (Fig. 3A). A less prominent, though significant increase in the mean particle size from 485 to 600 nm was found when using a 5% instead of a 2% PLGA solution.. Finally, the more hydrophilic PLGA was exchanged for the more hydrophobic and lower molecular ...
We have recently developed vetted methods for obtaining quantitative infrared directional-hemispherical reflectance spectra using a commercial integrating sphere. In this paper, the effects of particle size on the spectral properties are analyzed for several samples such as ammonium sulfate, calcium carbonate, and sodium sulfate as well as one organic compound, lactose. We prepared multiple size fractions for each sample and confirmed the mean sizes using optical microscopy. Most species displayed a wide range of spectral behavior depending on the mean particle size. General trends of reflectance versus particle size are observed such as increased albedo for smaller particles: for most wavelengths, the reflectivity drops with increased size, sometimes displaying a factor of 4 or more drop in reflectivity along with a loss of spectral contrast. In the longwave infrared, several species with symmetric anions or cations exhibited reststrahlen features whose amplitude was nearly invariant with ...
The Effect of Particle Size on the Efficacy of Pressurised Inhalers (pMDIs) in Adolescent Asthma - Is a Spacer Really Required for pMDI Use in this age ...
Particle size analysis, characterization and reduction are a key process used within the pharmaceutical manufacturing industry, they are carried out by...
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ABSTRACT Particle deposition on indoor surfaces has lately received great attention due to increasing concern about the effects of particle exposure on human health. In this study, we developed an easy and low-cost method of measuring the deposition amounts of different-sized particles and evaluated it through particle concentration measurement and theory calculation. First, a clean charge-coupled device (CCD) chip was exposed to air in order to receive the deposition of airborne particles. After sedimentation, images generated by the CCD of the deposited particles were analyzed, and the quantity of particles in each size range (> 2 µm) was identified based on the unique pixel sizes. Using a particle counter and a dust monitor, we also measured the concentrations of airborne particles with different sizes near the chip during sedimentation and compared them with the numbers of settled particles. The results show that the particle deposition can be quantified with this method and that a positive
The benefits of sizing aerosolized submicrometer particles using an electrical mobility sizing technique have been well documented. This type of analytical tool has been found to be able to measure particle diameter with an uncertainty of only 0.1%. The National Institute of Standards and Technology (NIST) has been using electrical mobility to measure its 0.1µm Standard Reference Material (SRM) Particles for well over a decade due to its superior accuracy and speed over surface measurement techniques. In this study an Electrospray Aerosol Generator has been used to generate polydisperse and monodisperse particles in the nanometer size range. A Scanning Mobility Particle Sizer™ (SMPS) Spectrometer with a Nano Differential Mobility Analyzer (NDMA) and Condensation Particle Counter (CPC) has been used to size the particles. The significance of controlling measurement parameters (flow accuracy, voltage accuracy, aerosol charge distributions, carrier gas properties, diffusion losses, etc.) will be
Abstract. Although secondary particulate matter is reported to be the main contributor of PM2.5 during haze in Chinese megacities, primary particle emissions also affect particle concentrations. In order to improve estimates of the contribution of primary sources to the particle number and mass concentrations, we performed source apportionment analyses using both chemical fingerprints and particle size distributions measured at the same site in urban Beijing from April to July 2018. Both methods resolved factors related to primary emissions, including vehicular emissions and cooking emissions, which together make up 76 % and 24 % of total particle number and organic aerosol (OA) mass, respectively. Similar source-types, including particles related to vehicular emissions (1.6 ± 1.1 μg m−3; 2.4 ± 1.8 × 103 cm−3 and 5.5 ± 2.8 × 103 cm−3 for two traffic-related components), cooking emissions (2.6 ± 1.9 μg m−3 and 5.5 ± 3.3 × 103 cm−3) and secondary aerosols (51 ± 41 μg m−3 ...
Determination of particle size distribution - Single particle light interaction methods - Part 4: Light scattering airborne particle counter for clean spaces
bauxite mill particle size mensennetwerk. bauxite particle size bauxite mining,Crusher South Africa bauxite particle size,Bauxite Crusher is widely used in bauxite crushing plant_SKDm_ Chat; particle size ore crush gamixeu bauxite crushing particle size,can be used to crush items from large,Size reduction in impact crushers,to break the ore down to a smaller size mine. More ...
The absolute efficiency of a phosphor screen is the ratio of the light energy per unit area at the screen surface to the incident x-ray energy fluence. Particle size is a critical factor in determining the absolute efficiency, but in most models its influence is not accounted for. To allow derivation of the particle size dependence, a model is proposed that describes the optical properties of the screen by means of a single parameter, the light extinction factor, xi, and assumes that the intrinsic efficiency (light energy/energy imparted to the phosphor material) is independent of particle size. The value of xi depends on the type of screen (phosphor, reflective backing, coating and binder) and has to be determined from measurements on at least two screens with known particle size and thickness. The absolute efficiency can then be calculated for an extended range of particle sizes and/or screen thicknesses. To test the model, experimental data from the literature were used to derive values of xi ...
The direct pelletization process is a fast and flexible operation with the potential to produce high quality particles appropriate for sophisticated oral solid dose formulations where a narrow particle size distribution is required. Traditional methods are too slow or subjective and therefore may be an unacceptable risk for use as an in-process control in a control strategy. An at-line direct imaging method with automated high-speed image analysis can be practically used during processing to accurately predict the process end-point with fast objective PSD data, supported by particle images, to significantly improve process optimisation and control.. ...
A method of controlling the particle size and particle size distribution of an aqueous emulsion having a non-aqueous disperse phase during the production thereof, in which the production of the emulsion is carried out in the presence of a dispersion of a templating agent, such as a polymer latex, and surfactant Particle size and particle size distribution of the dispersion is controlled by selecting the templating agent and surfactant such as to cause deposition of the disperse phase on particles of the dispersed templating agent, such that the particle size distribution of the templating agent provides a template for the particle size distribution of the final emulsion.
The influence of Mo particle size on the catalytic activity and product selectivity of alkalized MoS2 nanocatalysts has been investigated. Nanocatalysts are prepared using a microemulsion technique with water-to-surfactant ratios of 1-12. Three different techniques, including XRD, TEM, and hydrogen chemisorption were used to determine the molybdenum average particle size and their activity and selectivity in higher alcohols synthesis (HAS) carried out in a fixed bed microreactor at 330 °C and 70 bar. To fix the percentage of CO conversion, the GHSV is changed from 3.6 to 2.57 (nl/(hr.g catalyst)). The average MoS2 particle sizes are changed from 4.5 to 11.9 nm. The experimental results showed that changing particle size from 11.9 to 4.5 nm decreased the methanol formation rate from 0.00634 to 0.00534 (mol/(hr.g catalyst)) but increased ethanol formation rate from 0.00581 to 0.00787 (mol/(hr.g catalyst)) and higher alcohols formation rate from 0.00473 to 0.00657 (mol/(hr.g catalyst)). A size-dependent
Browse Item # 5350, SOLAIR 5350 100 Liters Per Minute (L/min) Flow Portable Airborne Particle Counters in the Technical Equipment Sales catalog including Item #,Item Name,Description,Brands,Standard Particle Size Range,Flow Rate at 0.5 Micrometer (µm
HORIBA Scientific particle size analyzers provide accurate, reliable particle size distribution measurements from 0.3 nanometers to 30 millimeters.
The complex nanoliposomes encapsulating both a hydrophilic drug vitamin C (vit C) and hydrophobic drug medium-chain fatty acids (MCFAs) was prepared by combining double emulsion method with dynamic high pressure microfluidization. The complex nanoliposomes was further freeze-dried under −86 °C for 48 h with sucrose at the sucrose/lipids ratio of 2:1(w/w) in order to enhance its stability. The freeze-dried complex nanoliposomes under the suitable conditions exhibited high entrapment efficiency of MCFAs (44.26 ± 3.34)%, relatively high entrapment efficiency of vit C (62.25 ± 3.43)%, low average size diameter (110.4 ± 7.28) nm and good storage stability at 4 °C for 60 days with slight changes in mean particle diameter and drug entrapment efficiencies. The results of transmission electron microscopy of freeze-dried complex nanoliposomes also showed that the freeze-dried samples with sucrose were stable without great increase in their particle sizes and without destroying their spherical shape. The
Analytical methods. Turbidimeters. The turbidimeters used were identical Sigrist KT65 or identical Hach 1720C turbidimeters. The measuring principle is based on scattering white light at a 90° angle. The turbidimeter was able to measure for four ranges. In this research only the lower range of 0 to 2 NTU was used. The resolution of the turbidity measurements was 1% of the maximum of the range. The turbidity was logged every minute. Before the experiments, both turbidimeters were calibrated.. Particle counters. As the on-line particle count technology has improved significantly in recent years, the research projects under review used different types of Met-One PCX particle counters. The number of ranges and the bin size of the ranges varied depending on the type of particle counter available at the water supply company. Some of the results were made with particle counters able to measure only in 5 particle-size ranges, while the most recent results were collected with particle counters using 31 ...
Track changes to particle size distribution, shape and count in real-time ✔ Control particle size, count, and shape ✔ Reveal hidden mechanisms ✔ Consistent particles in both Lab and Plant with probe-based technology
Particle size effect on the performance of Active Pharmaceutical Ingredient,Technical Articles,Technology,Jinan Winner Particle Instruments Joint Stock Co. Ltd.,1) API market conditionoverview:the pharmaceutical industry is divided into the pharmaceu
Particle size effect on the performance of Active Pharmaceutical Ingredient,Technical Articles,Technology,Jinan Winner Particle Instruments Joint Stock Co. Ltd.,1) API market conditionoverview:the pharmaceutical industry is divided into the pharmaceu
Powder compacts manufactured by the pharmaceutical industry are usually produced by uniaxial compression of powders or granules. This process results in compacts that are anisotropic in their mechanical strength, but this hypothesis has received little attention in the past. In this work, compacts were produced from sorbitol granules using two distinctively different particle size fractions, two compaction speeds and a range of different tablet porosities. The compact tensile strength was assessed by diametral and biaxial compression and by flexural bending. Fracture mechanics, i.e. the critical stress intensity factors in mode I and II loading, and the construction of the fracture envelope were used to investigate failure mechanisms and strength anisotropy. The strength results were also analyzed statistically employing Weibull analysis and analysis of variance. Granule size and compaction speed were identified as major influence factors on tensile strength. The magnitude of the effects found, however,
Nickel ferrite nanoparticles of very small size were prepared by sol-gel combustion and co-precipitation techniques. At the same annealing temperature sol-gel derived particles had bigger crystallite size. In both methods, crystallite size of the particles increased with annealing temperature. Sol-gel derived nickel ferrite particles were found to be of almost spherical shape and moderate particle size with a narrow size distribution; while co-precipitation derived particles had irregular shape and very small particle size with a wide size distribution. Nickel ferrite particles produced by sol-gel method exhibited more purity. Sol-gel synthesized nanoparticles were found to be of high saturation magnetization and hysteresis. Co-precipitation derived nickel ferrite particles, annealed at 400°C exhibited superparamagnetic nature with small saturation magnetization. Saturation magnetization increased with annealing temperature in both the methods. At the annealing temperature of 600°C, ...
TY - GEN. T1 - Toughening mechanism of PP with bimodal distributed SEBS particle size. AU - Mae, Hiroyuki. AU - Omiya, Masaki. AU - Kishimoto, Kikuo. PY - 2008. Y1 - 2008. N2 - The objective is to summarize the material ductility and the toughening mechanisms of the thermoplastic polypropylene blended with two different styrene-ethylene-butadiene-styrene tri-block copolymer (SEBS) at the intermediate and high strain rates. PP and two types of SEBS were blended so that the total rubber amounts were 10, 20 and 30 wt % against PP by the two-step blending procedure. Tensile tests are conducted at the nominal strain rates from 3 × 10-1 to 102 s-1. Phase morphology is investigated to estimate the bi-modal rubber particle size distribution. In addition, the fracture surfaces were observed by scanning electron microscopy (SEM) in order to understand the difference of the toughening mechanism for PP toughened with the bimodal rubber particle size distribution in PP and SEBS blends at various total ...
For BSA the most prominent effect of the micronization process was the formation of an insoluble fraction of the protein. Experiments revealed that all the three investigated milling parameters affected this result. With higher pressure and more milling cycles the insoluble fraction increased to 14 %. By applying cryogenic conditions the amount had been decreased to 6-9 %. This indicates that heat creation on the particle surface may play a role in this process, inducing changes within the particles. Different possible reasons for this phenomenon were investigated. Covalent protein aggregates due to thiol-disulfide interchange could be excluded as a reason as well as oxidation processes of this free thiol group. Increased surface hydrophobicity by rearrangement of fatty acids present at the molecule surface could be neglected by micronizing fatty acid free BSA. However, changes in relative surface hydrophobicity were detected by fluorescence analysis. The micronization process resulted in a ...
Our family of Condensation Particle Counters detects particles in the range from 2.5 to >3000 nm. Condensation Particle Counters use a condensation technique to enlarge submicrometer particles to a size that can be easily detected. Three of our condensation particle counting devices use water as the condensing fluid; the remaining CPCs use alcohol.
Read independent reviews on Delsa™Nano Zeta Potential and Submicron Particle Size Analyzer from Beckman Coulter on SelectScience