38 results about "Density dependent" patented technology

The present invention relates to the discovery that biocompatible anionic polymers can effectively inhibit fibrosis, scar formation, and surgical adhesions. The invention is predicated on the discovery that anionic polymers effectively inhibit invasion of cells associated with detrimental healing processes, and in particular, that the effectiveness of an anionic polymer at inhibiting cell invasion correlates with the anionic charge density of the polymer. Thus the present invention provides a large number of materials for use in methods of inhibiting fibrosis and fibroblast invasion. Anionic polymers for use in the invention include but are not limited to natural proteoglycans, and the glycosaminoglycan moieties of proteoglycans. Additionally, anionic carbohydrates and other anionic polymers may be used. The anionic polymers dextran sulfate and pentosan polysulfate are preferred. In a more preferred embodiment, dextran sulfate, in which the sulfur content is greater than about 10% by weight, may be used. In a more preferred embodiment, the average molecular weight is about 40,000 to 500,000 Daltons. The present invention provides compositions and methods to inhibit fibrosis and scarring associated with surgery. The invention further provides compositions and methods to inhibit glial cell invasion, detrimental bone growth and neurite outgrowth. In a preferred embodiment, the inhibitory compositions further comprise an adhesive protein.

A method (100) of controlling an outdoor lighting system, a computer program product, a controlling device for controlling an outdoor lighting system and an outdoor lighting system are provided. The outdoor lighting system comprises outdoor lamps which are distributed over spatial segments of an outdoor space. The emitted light intensity of the outdoor lamps is controllable per spatial segment, and references are used to refer to specific spatial segments. The method (100) comprises the steps of (i) receiving (102) from a detection system an indication of a sub-area of the outdoor space and receiving at least one activity property or the sub-area, the detection system being arranged for detecting activity in the sub-area, the sub-area being different from all the spatial segments, and the indication being used to refer to the sub-area, and the at least one activity property being related to a traffic density in the sub-area (ii) mapping (104) the at least one indication to at least one reference of a respective spatial segment, (iii) determining (106) a light intensity level for the respective at least one spatial segment in dependence on the received at least one activity property, (iv) providing (108) the at least one reference together with the respective determined light intensity to the outdoor lighting system.

Disclosed are operation methods of station based on station density in wireless local area network. An operation method comprises obtaining density-related information indicating a station density state within a communication area of the first station; and transmitting a notification frame including at least one of an operation mode indication information and a clear channel assessment (CCA) threshold that are set based on the density-related information. Therefore, performance of WLAN can be enhanced.

Methods, systems, and computer program products for measuring the density of material. According to one aspect, a nuclear density gauge is disclosed for measuring the density of a sample construction material. The gauge includes a radiation source positioned in an interior of a sample construction material and adapted to emit radiation from the interior of the sample construction material. Further, a radiation detector is positioned apart from the radiation source. The radiation detector is operable to produce a signal representing an energy level of detected radiation. A material property calculation function is configured to calculate a value associated with the density of the sample construction material based upon the signal produced by the radiation detector. Further, the radiation source may be positioned on a surface of the sample construction material and adapted to emit radiation towards the surface of the sample construction material.

Provided is yarn for a cell culture scaffold. The yarn includes ply-twisted fiber strands, and to prevent density-dependent inhibition of cultured cells and increase a cell-contacting specific surface area, at least a part of the plurality of twisted fiber strands are untwisted such that an open space is formed between the fibers. A cell proliferation rate and cell viability may be increased by creating microenvironments suitable for migration, proliferation and differentiation of the cultured cells using the yarn. A large quantity of cells may be simultaneously cultured by creating a cell proliferation space as large as possible in a scaffold space having a limited cell proliferation space, and cell proliferation may be steadily maintained by preventing the inhibition of cell proliferation due to intercellular contact. The cells cultured may be cultured to have a shape/structure suitable for application to an in vitro experiment model or implantation into an animal body.

The invention discloses an intelligent control compensation method for improving wind energy capturing capacity of wind generating set. The method comprises the following steps that (1) the local current air densities are obtained through timing calculation with the period of Tcal by measuring the air temperature, the air pressure and the humidity of a field where the wind generating set is located; (2) discrete air density values obtained through calculation are integrated into a plurality of preset interval ranges, and the densities input into a master control system are assigned according to the interval of the actual density; and (3) according to the interval of the current air density value, parameters of a master control program of the wind generating set relevant to density are corrected, when the air density is lower than a preset threshold, a set blade variable function is started before the wind speed reaches the rated wind speed, and the wind generating unit maintains the optimal working state in the changing environment. The invention further provides an intelligent control compensation device for improving wind energy capturing capacity of wind generating set. The method and device improve the wind energy capturing capacity and achieve output optimization under different working conditions.

A method and device for assaying sperm motility in a forward direction and density of active sperm in a semen sample are disclosed. The device includes a microfluidics structure having a sample reservoir, a downstream collection region and a microchannel extending therebetween. The microchannel is dimensioned to confine sample sperm to single-direction movement within the channel, such that sperm in a semen sample placed in the sample reservoir enter and migrate along the microchannel toward and into the collection region. Also included is a detector for detecting the presence of labeled sperm in the microchannel or collection region, and an electronics unit operatively connected to the detector for (i) receiving detector signals, (ii) based on the detector signals received, determining sperm motility and density in the sperm sample, and (iii) displaying information related to sperm motility and density.

The invention discloses a device and a method for measuring the sand content of an optical sediment solution. The device comprises a measurement cylinder, a regulation base, a black and white linear array charge coupled device (CCD) module and a semiconductor laser, wherein the black and white linear array CCD module is arranged at the bottom of the measurement cylinder, and is connected with a computer by an analog/ digital (A/ D) conversion card. The method is based on a light refraction law; light refractive index is related to the density which is related to the concentration of the solution with sand content, so that the concentrations of the solution with different sand contents are different from one another, and the concentration has a certain correspondence relationship with the sand content, thus the refractive index corresponds to the sand content of the sediment solution, and the relationship between the concentration of the sediment solution and the refractive index can be established by calibration, so that the concentration of the sand content of the sediment solution can be reversely calculated by utilizing the refractive index according to the calibration relationship. The device disclosed by the invention is easy to build and high in measurement accuracy and degree of automation. The method disclosed by the invention is simple in principle, easy to operate, convenient for manufacturing a sand content measuring apparatus suitable for different occasions and wide in applicability.

The invention discloses a magnetic floating density separation measurement method based on general anti-magnetic properties of materials. The method includes a step (1) of constructing a magnetic floating experimental device, and simulating a magnetic floating effect of a magnetic field on an object by physical modeling; a step (2) of determining the approximate density of a material of a to-be-tested sample, and then determining the density of a paramagnetic medium solution; a step (3) of placing a transparent container containing the to-be-tested sample and the paramagnetic solution in a magnetic flotation device and performing full standing, wherein the magnetic flotation device is provided with an adjustable number of strip-shaped magnets with like poles opposite; a step (4) of obtaining floating height information of the tested sample by means of visual observation and picture collection; and a step (5) of calculating sample density and performing density-related studies. Comparedwith the prior art, the magnetic floating density separation measurement method has the outstanding advantages that a device required by the method is simple and convenient to operate and low in cost, measurement results are easy to observe, measurement accuracy is high, and high-precision density-related test applications can be carried out under limited conditions.

A sharpening filter is disclosed for performing density-dependent sharpening on digital images. In one embodiment, a digital image to be sharpened is decomposed into a plurality of high-pass versions of the image at different resolutions. These high-pass images are gained at each resolution and recombined with the original image to produce a sharpened version of the image. The gains that are applied at each resolution are density-dependent. As a result, the effects of density-dependent blurring are counteracted, such that the sharpness of the final printed image is independent of the print density. Techniques are disclosed for performing such density-dependent sharpening with a high degree of computational efficiency.

A computer implemented method modifies an experimental electron density map. A set of selected known experimental and model electron density maps is provided and standard templates of electron density are created from the selected experimental and model electron density maps by clustering and averaging values of electron density in a spherical region about each point in a grid that defines each selected known experimental and model electron density maps. Histograms are also created from the selected experimental and model electron density maps that relate the value of electron density at the center of each of the spherical regions to a correlation coefficient of a density surrounding each corresponding grid point in each one of the standard templates. The standard templates and the histograms are applied to grid points on the experimental electron density map to form new estimates of electron density at each grid point in the experimental electron density map.

The invention puts forward a CT (Computed Tomography) helical scanning image reconstruction method, which comprises the following steps that: carrying out helical scanning to obtain helical scanning data; obtaining a helical scanning data weighting factor, wherein the helical scanning data weighting factor comprises a first weighting factor, the first weighting factor relates to the density of the helical scanning data in a z-axis direction, and the z-axis direction is the rotation axis direction of the helical scanning; according to the weighting factor, carrying out interpolation on the helical scanning data to obtain segment data; and reconstructing the segment data into an image. By use of the helical scanning image reconstruction method, the distribution nonuniformity of the helical scanning data in the z-axis direction is considered in a weighted interpolation process, the first weighting factor related to the density of the helical scanning data in the z-axis direction is used for weighting the helical scanning data, and image artifacts can be effectively reduced. In addition, the invention also puts forward a CT helical scanning image reconstruction device.

The invention discloses an SNP molecular marker related to a chicken back pore density and belongs to the field of molecular markers and genetic breeding. An SNP site of the SNP molecular marker is located at a 169981107 site of a first chromosome of an international chicken reference genome GRCg6a Primary Assembly version, and a base at the site is G or A. The invention further provides a primercombination for detecting the SNP marker and application of the primer composition. By means of the SNP molecular marker and the primer combination, an efficient and accurate molecular marker assistedbreeding method for the back pore density can be established, so that the back pore density is effectively selected, and breeding of the anti-stress chicken breeds is promoted.

An apparatus for estimating a characteristic of a posterior distribution includes a sampling section configured to generate a plurality of samples from a prior distribution, an obtaining section configured to obtain, for each sample among the plurality of samples, a likelihood of observation given the sample, a calculation section configured to calculate a parameter relating to a density at each sample in the prior distribution, and an estimation section configured to estimate, for the plurality of samples, a characteristic of the posterior distribution based on the parameter relating to the density at each sample and the likelihood of observation for each sample.

The invention discloses a wind energy equipment with a control device for managing and running the wind energy equipment. The invention also discloses a method for controlling a wind energy equipment with a control device for managing the operation cycle. In order to extract as much energy as possible from the wind, the control device takes into account the altitude at which the wind energy installation is installed and/or the height of the wind energy installation. Furthermore, the method according to the invention measures the air density and transmits a signal characterizing the air density derived from the measured air density value to the control device for consideration by the control device when managing the operation.