63results about How to "Improved recovery properties" patented technology

A semiconductor device includes a semiconductor substrate with: a drift layer; a base layer; and a collector layer and a cathode layer. In the semiconductor substrate, when a region operating as an IGBT device is an IGBT region and a region operating as a diode device is a diode region, the IGBT and diode regions are arranged alternately in a repetitive manner; a damaged region is arranged on a surface portion of the diode region in the semiconductor substrate. The IGBT and diode regions are demarcated by a boundary between the collector and cathode layers; and a surface portion of the IGBT region includes: a portion having the damaged region at a boundary side with the diode region; and another portion without the damaged region arranged closer to an inner periphery side relative to the boundary side.

A structure for use in a compressible resilient pad. The structure contains both axially elastomeric strands and relatively inelastic strands co-extruded in various patterns. The structure has a high degree of both compressibility under an applied normal load and excellent recovery (resiliency or spring back) upon removal of that load.

The invention discloses a method for optimizing parameters of a low-voltage current-limiting controller of a weak receiving terminal power network direct-current transmission system. The method comprises the following steps: establishing a simulated data platform; setting a running mode and a fault disturbance set; establishing an optimized model object function by adopting a particle swarm optimization algorithm; initializing a particle swarm, an optimum position of each particle and an optimum position of the particle swarm; starting iteration and updating the position and speed of each particle; calculating fitness of each particle; updating an optimum position through which each particle passes and an optimum position through which the particle swarm passes; and repeating the steps to obtain a parameter optimization result. According to the method disclosed by the invention, the establishment of the simulated data platform enables the optimized model object function to be able to accurately reflect the influence of VDCOL control parameters on safe and stable characteristics of an AC-DC power network, so that the parameters optimized by the method disclosed by the invention can achieve a better control effect under the condition with different running modes, faults and disturbance of a weak receiving terminal power network, thereby improving restoration characteristics of an AC-DC system, and promoting the safety and reliability levels of the system.

A curable organopolysiloxane composition containing a fluoroalkyl group is disclosed. The composition comprises: (A) an organopolysiloxane containing a fluoroalkyl group, having at least two alkenyl groups in a molecule, where 10 mol % or more of all substitution groups on the silicon atoms is a fluoroalkyl group, and the average degree of polymerization is less than 150; (B) an organohydrogen polysiloxane having at least two silicon-bonded hydrogen atoms in a molecule at an amount where the silicon-bonded hydrogen atoms in the component is 0.1 to 1.0 mol with regard to a total of 1 mol of the alkenyl groups in component (A); (C) an effective amount of a hydrosilylation reaction catalyst; and optionally, (D) a solvent. The composition generally has a high dielectric constant and favorable transparency. A cured product and applications of the composition and the cured product thereof are also disclosed.

In a liquid surface-floating culture method in which culturing of microalgae is performed on the liquid surface, there is provided a culture method in which the oil content in microalgae is improved. In addition, there is a provided a method for decreasing the probability of recovery of bottom surface algae. Furthermore, an object of the present invention is to provide a culture method in which the proliferation rate of microalgae is improved.

Culturing is performed such that a medium is suctioned from a region, in which there is a small quantity of microalgae between the liquid surface and the bottom surface, is discarded, and is replaced with a medium of which the concentration of a nitrogen compound or a phosphorus compound is lower than that of the above-described medium. In addition, a liquid is added thereto immediately before collecting microalgae on the liquid surface, and the water depth in a culture vessel is made to be deep. In addition, the microalgae are subjected to liquid surface-floating culture using a medium containing sugar. In the present invention, microalgae which can form a biofilm on the liquid surface and have at least one characteristic selected from the group consisting of the following (1) to (8) when being cultured in a medium within a culture vessel may be used. (1) The sum of the quantity of algal bodies of microalgae existing on the liquid surface and in a region from 1 cm below the liquid surface to the liquid surface, and the quantity of algal bodies of microalgae on the bottom surface of a culture vessel is greater than or equal to 10 times the quantity of algal bodies existing in the other region within the culture vessel; (2) the specific gravity of microalgae on the liquid surface is smaller than that of microalgae on the bottom surface of the culture vessel; (3) the specific gravity of microalgae on the liquid surface is greater than that of water; (4) the oil content of microalgae on the liquid surface is higher than that of microalgae on the bottom surface; (5) the size of microalgae on the liquid surface is larger than that of microalgae on the bottom surface; (6) a formed biofilm includes a film-like outer layer and an inner layer which has a plurality of bubble-like structures, and the outer layer is thicker than the inner layer; (7) a part of a formed biofilm has a pleat-like structure in a medium; and (8) in a case where microalgae obtained by collecting a biofilm which has been formed and subjecting the collected biofilm to suspension treatment are seeded on the liquid surface of a medium, the microalgae can be deposited in the medium.

In the method for producing a medical pressure-sensitive adhesive tape or sheet of the invention, a water dispersion-type copolymer solution having a specific composition is used. Therefore, the problem caused by high thixotropy can be eliminated and a pressure-sensitive adhesive layer can be relatively easily formed on a porous substrate by a direct method. In addition, when the medical pressure-sensitive adhesive tape or sheet obtained by the method of the invention is attached to the skin surface, skin adhesion and tube fixing are excellent and at the same time, irritation to skin is low.

The invention belongs to the technical field of processing of environment-friendly bath towels, and particularly relates to a preparation method of a soaping-resistant soft bath towel. The preparationmethod comprises preparation, dyeing, color fixation and high temperature setting of blended products. Compared with the prior art, the preparation method of the soaping-resistant soft bath towel disclosed by the invention has the following advantages that a plurality of fibers are reasonably combined to obtain blended fabrics, and modified sisal fibers and pineapple fibers are beneficial for improving wear resistance of the fabrics; sisal fibers are modified before the use, so that the softness of the fabrics can be improved, water absorption performance of the fabrics is also improved, andsurface roughness of the fabrics is reduced; compared with exclusive use of bamboo fibers, combined use of the bamboo fibers and licorice fibers is advantaged in better antibacterial property; becauseof coordination of the licorice fibers and the pineapple fibers, a soft hand feel of the fabrics can be improved, and the obtained fibers are high in elasticity, have better reduction characteristic,are not shrunk after the fibers are wet, and are high in shape retention property; then coordination of variable-speed coloring and low-temperature salt water color fixation is utilized, so that thecolor retention property of the product is improved.