400 results about "Particle density" patented technology

Structural cement panel for resisting transverse and shear loads equal to transverse and shear loads provided by plywood and oriented strain board, when fastened to framing for use in shear walls, flooring and roofing systems. The panels provide reduced thermal transmission compared to other structural cement panels. The panels employ one or more layers of a continuous phase resulting from curing an aqueous mixture of calcium sulfate alpha hemihydrate, hydraulic cement, coated expanded perlite particles filler, optional additional fillers, active pozzolan and lime. The coated perlite has a particle size of 1-500 microns, a median diameter of 20-150 microns, and an effective particle density (specific gravity) of less than 0.50 g / cc. The panels are reinforced with fibers, for example alkali-resistant glass fibers. The preferred panel contains no intentionally added entrained air. A method of improving fire resistance in a building is also disclosed.

Thus, a primary aspect of the present invention relates to a method for the fractionation of a protein-containing mixture wherein the protein-containing mixture is selected from the group consisting of milk, milk derived products, milk derived raw materials, vegetable derived products, vegetable derived extracts, fruit derived products, fruit derived extracts, fish derived products, and fish derived extracts, the method comprising the steps of: a) optionally adjusting the pH of the mixture; b) applying the mixture to an adsorption column comprising an adsorbent, the adsorbent comprises a particle with at least one high density non-porous core, surrounded by a porous material, the adsorbent having a particle density of at least 1.5 g / ml and a mean particle size of at most 150 μm; c) optionally washing the column; d) eluting at least one protein from the adsorbent.

The present invention relates to non-segregating flavored coffee compositions. In particular, the present invention relates to novel flavored coffee compositions that minimize or inhibit the segregation and separation of constituent components, and the corresponding processes for making such compositions. The flavored coffee compositions herein are characterized as having a roast and ground, an instant coffee component, or mixtures thereof. The roast and ground coffee component will have a moisture level in the range of from about 1% to about 15%, a particle density in the range of from about 0.1 g / cc to about 0.45 g / cc, and a mean particle size distribution in the range of from about 400 microns to about 1300 microns. The instant coffee components used herein will have a particle density in the range of from about 0.1 g / cc to about 0.8 g / cc, a mean particle size distribution in the range of from about 250 microns to about 2360 microns, and a moisture level in the range of from about 1% to about 4.5%. The flavored coffee composition further contains a flavoring component with a moisture level in the range of from about 1% to about 7%, a particle density in the range of from about 0.1 g / cc to about 0.8 g / cc, and a mean particle size distribution in the range of from about 5 microns to about 150 microns. The ratio of coffee component particle size to flavor component particle size is in the range of from about 100:1 to about 5:1.

The subject invention relates to a new alarm which is based on using a quarternary tunable Mid-IR laser to measure both particles and gas at the same time. The measurement is done within an area of which the gas of interest will absorb the Mid-IR radiation. By widely tuning the emission wavelength of the laser, several wavelengths can be measured in order to accurately find both gas composition and particle density with one laser based sensor. We tested a new device which use radiation between 2.27 μm and 2.316 μm. Methane gas reduces intensity of the radiation at certain wavelengths in this device, while particles / fog reduce intensity for all wavelengths. In this case, fog should not trigger an alarm, while methane leaks should. This can also be applied for CO and smoke in which one sensor will measure both parameters to sound an alarm instead of just one parameter.

The invention discloses a travelling robot positioning system based on a single camera. In the system, a point model is adopted for representing an environmental model, an off-line map is calibrated, an action model and an observation model are established for carrying out position updating and road sign calibration, Monte Carto particle filter technology is adopted, particle swarm distribution with weights is adopted for representing robot pose estimation, the weights and the distribution of particles are updated through road sign matching processing, field particle distribution is rasterized, and a sub-region with maximal particle density is selected for positioning the robot. As an independent platform, the system greatly improves the map calibration technology on the environmental model, has great flexibility on the identification of ground line sections, and just needs re-calibration but not needs model re-establishment after environment change. The model reduces the matching complexity in visual processing and improves calculation efficiency. The Monte Carlo localization algorithm is expanded on the information integration processing technology, thus ensuring the real-time property and robustness of the system.

An invention is described which allows measurement of the concentration of fluorescent particles in a flowing (laminar) fluid by imaging the flow with a video camera. A beam of illumination is used to illuminate the target particles. Imaging optics are arranged to view the focal plane to form an image of the multiple fluorescent sample particles in the flow stream; a camera records the image formed by the imaging optics, and a counting algorithm enumerates the particles. Operational parameters of the system are adjusted according to an initial estimate of particle density, for example flow rate, exposure time, and sampling interval. In addition, the counting algorithm is selected according to the estimated particle density.

An objective of the invention is to provide a method for producing a polymer-particle composite by which a polymer-particle composite having a desired particle density and a desired film thickness can be produced conveniently without allowing the particle to be aggregated in the polymeric matrix. To accomplish the objective described above, the present invention provides a method for producing a polymer-particle composite comprising a step of forming a polymer-containing layer mainly consisting of a polymeric material and a step of bringing a particle suspension containing the particle suspended in a solvent capable of swelling the polymeric material into contact with the polymer-containing layer.

The present invention provides methods of forming uniform nanoparticle based monolayer films with a high particle density on the surface of a substrate comprising (a) forming a surface modifying layer on a substrate using a material comprising a first functional group that chemically binds to the substrate and a second functional group comprising a group capable of forming van der Waals forces, (b) applying to the surface modifying layer a solution comprising nanoparticles, and (c) curing the resultant structure formed at step (b) for a predetermined time to form a nanoparticle based monolayer film. The present invention further provides substrates and devices comprising the nanoparticle based monolayer films.

The present invention provides a carrier which contains core material particles having magnetism and a coating layer on the surfaces of the core material particles; in which the particle density of the core material particles is 4.0 g / cm3 to 6.0 g / cm3, and the bulk density of the core material particles is 2.0 g / cm3 to 3.0 g / cm3; and also provides a developer using the carrier, an image forming method using the developer, an image forming apparatus using the developer, and a process cartridge using the developer.

An intake system for the combustion air of a motor of a hand held implement is provided. The system includes an air filter and a centrifugal separator. The air filter has a dirt chamber and a clean chamber that is separated therefrom by a filter medium. The clean chamber is fluidically connected with a carburetor of the motor to convey combustion air to the motor. The centrifugal separator splits the air stream into a core flow having low particle density and a peripheral flow having high particle density. The centrifugal separator includes at least two cyclones, wherein the discharged flows from the cyclones are respectively combined in pairs and open out into a common suction tube.

A light guide plate, comprising a light exiting surface and a light entering end, has a shape in which its thickness perpendicular to the light exiting surface increases gradually as it is away from the light entering end and has scattering particles scattered therein. A light guide plate assembly comprises this guide plate, and a prism sheet in which a plurality of prisms are arranged in parallel with the apex angles of the prisms arranged facing the light exiting surface. A surface illuminating device comprises a light guide plate or a light guide plate assembly, and a liquid crystal display device comprises the surface illuminating device. The scattering particles scatter light entering at the light entering end and propagating through the inside and satisfy the following expression (1) and (2), and the apex angles of the prisms of the prism sheet satisfy the following expressions (3) and (4). (F is scattered sectional area, NP is particle density, LG is length of guide plate along incident direction, KC is correction coefficient, phi is apex angle of symmetric prism, and theta1 and theta2 are two apex angles divided by perpendicular of non-symmetric prism.) 1.1<=FNPLGKC<=8.2 ---(1) 0.005<=KC<=0.1 ---(2) 55 DEG<=theta<=80 DEG ---(3) 0 DEG<= theta1<= 15 DEG and 30 DEG<= theta2<= 45 DEG ---(4).

The present invention relates to non-segregating, non-agglomerated flavored coffee compositions. In particular, the present invention relates to novel flavored coffee compositions that minimize or inhibit the segregation and separation of constituent components, and the corresponding processes for making such compositions. The flavored coffee compositions herein are characterized as having a roast and ground, an instant coffee component, or mixtures thereof. The roast and ground coffee component will have a moisture level in the range of from about 1% to about 15%, a particle density in the range of from about 0.1 g / cc to about 0.45 g / cc, and a mean particle size distribution in the range of from about 400 microns to about 1300 microns. The instant coffee components used herein will have a particle density in the range of from about 0.1 g / cc to about 0.8 g / cc, a mean particle size distribution in the range of from about 250 microns to about 2360 microns, and a moisture level in the range of from about 1% to about 4.5%. The flavored coffee composition further includes a flavoring component with a moisture level in the range of from about 1% to about 7%, a particle density in the range of from about 0.1 g / cc to about 0.8 g / cc, and a mean particle size distribution in the range of from about 5 microns to about 150 microns. The ratio of coffee component particle size to flavor component particle size is in the range of from about 100:1 to about 5:1.

A method for rendering hair particles includes determining a grid with vertices and voxels bounding the hair particles, determining hair densities for the vertices, smoothing the hair densities, solving a distance function to form a distance field in response to the smooth hair densities, wherein a distance function returns zero at a pre-determined hair particle density, determining a surface normal direction for a hair particle in response to the distance field values, determining a hair illumination value in response to a first illumination source, and determining a shading value for the hair particle using the hair illumination value and the surface normal direction for the hair particle.

The light guide plate includes a rectangular light exit plane, a light entrance plane containing one side of the light exit plane, and a rear plane located on the side opposite from the light exit plane and scattering particles for scattering light propagating inside the light guide plate dispersed therein. The light guide plate has two layers, a first layer located on the side closer to the light exit plane and having a first particle density of the scattering particles, and a second layer located on the side opposite from the light exit plane and having a second particle density that is greater than the first particle density of the first layer. Npo and Npr satisfy Npo<Npr, where Npo is the first particle density and Npr is the second particle density.

A method for rendering hair particles includes determining a grid with vertices and voxels bounding the hair particles, determining hair densities for the vertices, smoothing the hair densities, solving a distance function to form a distance field in response to the smooth hair densities, wherein a distance function returns zero at a pre-determined hair particle density, determining a surface normal direction for a hair particle in response to the distance field values, determining a hair illumination value in response to a first illumination source, and determining a shading value for the hair particle using the hair illumination value and the surface normal direction for the hair particle.

The cold spraying process according to the invention uses cold gas streams whose properties (temperature (T), particle density (p), pressure (p), particle velocity (v)) are variably changed such that they can be adapted to the desired properties of the coatings.

The invention relates to a method for preparing high-quality energetic crystal material fine particles. Various high-quality energetic crystal material fine particle products, such as pentaerythritol tetranitrate (PETN), cyclotrimethylene trinitramine (RDX), cyclotetramethylenetetranitramine (HMX), hexanitrohexaazaisowurtzitane (CL-20), DADNE (FOX-7), ammonium perchlorate (AP), and the like can be prepared by adopting an ultrasound solvating-out crystallization method in the traditional solvating-out crystallization process. The high-quality energetic crystal material fine particle product prepared by the preparation method disclosed by the invention has subglobular particle form, narrow granularity distribution, average particle diameter of 5-50 microns or so, transparent crystals, high particle density, crystal theoretical density of more than 99.9 percent and obviously reduced shock wave sensitivity and is used for pouring or pressing PBX (Plastic-bonded explosives). The method for preparing the high-quality energetic crystal material fine particles has the advantages of simple process flow and mild reaction conditions and is suitable for mass industrialized production.

Methods for using focused light scattering techniques for the optical sensing of biological particles suspended in a liquid medium are disclosed. The optical sensing enables one to characterize particles size and / or distribution in a given sample. This, in turn, allows one to identify the biological particles, determine their relative particle density, detect particle shedding, and identify particle aggregation. The methods are also useful in screening and optimizing drug candidates, evaluating the efficacy and dosage levels of such drugs, and in personalized medicine applications.

A method for conducting laser absorption measurements in high temperature process streams having high levels of particulate matter is disclosed. An impinger is positioned substantially parallel to a laser beam propagation path and at upstream position relative to the laser beam. Beam shielding pipes shield the beam from the surrounding environment. Measurement is conducted only in the gap between the two shielding pipes where the beam propagates through the process gas. The impinger facilitates reduced particle presence in the measurement beam, resulting in improved SNR (signal-to-noise) and improved sensitivity and dynamic range of the measurement.

Microcomposites comprising titanium dioxide (TiO2) nanoparticles embedded within cross-linked, thermally responsive microgels of poly(N-isopropylacrylamide) are disclosed. Interpenetrating linear chains of poly(acrylic acid) functionalize the nanoparticles for dispersal within the microgel framework. The microcomposites show rapid sedimentation, which is useful for gravity separation applications such as environmental remediation via photocatalytic degradation.The extent of loading of the TiO2 within the colloidal particles can be easily manipulated from 10% (weight) to a value as high as 75%. The microgel-titania composites showed rapid sedimentation, which is useful for gravity separation of these particles in photocatalytic applications. The settling of the microgel-titania composites occurred over minutes and was much faster than solid, impermeable spheres. As the content of TiO2 increased within the particles from 10% to 75%, the increased effective particle density led to significant decrease in the settling time from approximately 2200 seconds to approximately 100 seconds.

A fresh air duct is configured to direct fresh air filtered by an air conditioning system towards a clean room downstream from the fresh air duct, the fresh air having a first level of particle density. A separate particle filter in the fresh air duct, located downstream from the air conditioning system and upstream from the clean room, is configured to further filter the fresh air to provide filtered fresh air having a second level of particle density therein that is less than the first level. Related methods are also disclosed.

The invention relates to a non-cenosphere light weight cement slurry, which mainly solves the problem that the cement slurry cannot keep the density thereof under a high pressure condition. The non-cenosphere light weight cement slurry is characterized by comprising the following components in portion by weight: 100 portions of cement, 116 to 321 portions of water, 52 to 136 portions of fly ash, 14 to 38 portions of silica fume, 14 to 38 portions of superfine cement, and 6 to 11 portions of early strength agent, wherein the particle diameter of the silica fume (of which the SiO2 content is more than 90 percent) is more than 0 and less than 0.5 mu m, the particle density of the silica fume and the fly ash is 2.0 grams per cubic meter, and the particle diameter of the superfine cement is more than 0 and less than 2 mu m. The light weight cement slurry forms a set of incompressible light weight cement slurry system of which the density is between 1.40 and 1.55 grams per cubic meter through preferentially selecting external additives and applying a grain composition principle, wherein the flowability and the sedimentation stability of the cement slurry are good, the set cement strength is more than 15 MPa and cannot decline at a temperature of 150 DEG C so as to satisfy the technical requirements on oil field exploration and development.

The invention specifically relates to an alpha-alumina-based abrasive and a preparation method thereof. The abrasive is characterized in that a particle density is higher than 3.88g / cm<3>, a micro hardness is higher than 20GPa, and particle-forming grain size is 0.15-0.3 micrometers. The preparation method comprises the steps that: (1) pure water, a boehmite half-finished product and alumina seed grind solution are added into a stirrer with a vacuum pumping function, and the raw materials are stirred and beaten into slurry; (2) dilute nitric acid with a concentration of 20% is added into the slurry, and a sol and then a gel are gradually formed in a vacuum state; (3) the gel is bake-dried under a temperature of 140 DEG C, and is crushed; on-sieve particles are obtained by using a 120-mesh sieve; (4) the obtained particles are calcined, and the calcined particles are sintered; and (5) finished product particles are obtained by sieving. The method provided by the invention has the advantages of low raw material cost, and mature and stable process. With the abrasive particles provided by the invention, a prepared abrasive product has the characteristics such as high grinding efficiency, good self-sharpening performance, and long durability.

A transparent light guide member comprising a first light guide unit in the form of a transparent plate having a rectangular light emitting plane and a parallel groove formed on a rear surface located opposite from the rectangular light emitting plane and parallel to one side of the rectangular light emitting plane; and a second light guide unit, which is transparent, having a columnar external shape to be accommodated in the parallel groove and containing light-scattering particles. Let Φ be the scattering cross section of the particles, LG the length of the light guide unit 32 in the direction in which light propagates, Np the particle density, and KC a compensation coefficient, then a value Φ·LG·Np·KC the light guide member assumes is not smaller than 1.1 and not greater than 8.2, and the compensation coefficient KC is not smaller than 0.005 and not greater than 0.1.

The planar lighting device includes, in addition to light sources, a light exit plane, a pair of light entrance planes formed on a pair of sides of the light exit plane, and a rear plane composed of a pair of inclined planes formed on a side opposite from the light exit plane such that the light guide plate grows thicker with an increasing distance from the light entrance planes toward the center. The light guide plate contains light scattering particles satisfying Npi>Np, where Npi is the particle density in a region of space within a given range of the light guide plate and Np the density in the other region of space. The planar lighting device with minimized brightness unevenness liable to develop near the light entrance planes when the light exit plane has great dimensions.

A particle laminated substrate and a method for manufacturing the particle laminated substrate are disclosed. The particle laminated substrate has a particle accumulation layer formed by accumulating and allowing particles to adhere onto a substrate having a surface where a graft polymer chain is present in which either terminal of the polymer is bonded to the surface of the substrate, by means of an electrostatic accumulating phenomenon, such that a particle density in the vicinity of the surface of the particle accumulation layer is higher than a particle density in the vicinity of the substrate.

The present invention is to provide a carrier and a developer, which have fewer occurrences of carrier adhesion and background smear, excellent granularity and longer durability. The carrier comprises the core material particles having magnetism and resin coating layer covering the core material particles, and wherein the weight average particle diameters is in the range of 22 m to 32 m, the proportion of the weight average particle diameters relative to the number average particle diameter is in the range of 1.00 to 1.20, the content of particles having a diameter of 20 m or smaller is 7% by mass, the content of carrier particles having a diameter of 36 m or smaller is in the range of 90% by mass to 100% by mass, and the proportion of the particle density of the core material particles is in the range of 85% to 100% of the true density of the core material particles.

The invention specifically relates to an alpha-alumina-based abrasive containing sheet-shaped structures, and a preparation method thereof. The abrasive is characterized in that particle density is higher than 3.88, a microhardness is higher than 20GPa, sizes of grains forming particles are lower than 5 micrometers, and the abrasive contains sheet-shaped structures. The preparation method comprises the steps that: (1) pure water and a boehmite semi-finished product are added into a stirring machine with a vacuum pumping function; and the mixture is stirred into slurry; (2) dilute nitric acid with a concentration of 20% is added; stirring is carried out under a vacuum state, such that a sol and then a gel are gradually formed; (3) the gel is bake-dried and crushed; on-sieve particles with a size higher than 120 meshes are obtained by sieving; (4) the sieved particles are calcined, and the calcined particles are sintered; and (5) finished-product particles are obtained by sieving. The preparation method provided by the invention has the advantages of low raw material cost, and mature and stable process. With the method provided by the invention, the prepared abrasive particles contain sheet-shaped structures. Prepared abrasive product has the characteristics such as high grinding efficiency, good self-sharpening performance, long durability, and the like.

Method for measuring a target particle property. A suspended microchannel resonator is calibrated to determine the relationship between a detected mass and a resonance frequency shift of the resonator. The target particle is suspended in a fluid and introduced into the resonator, and the resonator frequency shift due to the particle is measured. Target particle mass is calculated from the resonator frequency shift, the target particle density, and the fluid density. A target particle property such as size or volume is determined from the calculated target particle mass.

The invention provides a device and a method for measuring mass moisture content and volume density of soil by utilizing a volume replacement measurement way. The device comprises a controller, a sampling vessel, a weighing device and a saturation system, wherein the controller is connected with the weighing device, and the saturation system comprises a pre-saturation pond and a water supply device. The method comprises the following steps that under the situation that the density of soil particles is known, a soil sample with a certain volume is taken, so initial mass of the soil sample can be measured, then pre-saturation treatment is conducted on the soil sample, water is continuously supplied to the soil sample so as to ensure the soil sample to be maintained at a saturated state, when the mass of the soil sample is constant, the mass of the soil sample at the saturation state is measured, and the mass moisture content of the soil sample can be calculated through a formula according to the volume of the soil sample, the soil particle density, the initial mass of the soil sample, the mass of the saturated soil sample and the water density. The volume replacement measurement way is used for directly measuring the mass moisture content and the volume density of the soil, so that simplicity and convenience in operation can be realized, the measurement precision is high, the instrument stability is good, time and labor can be saved, and the energy can be saved.