Abstract:
Disclosed is an unshaped refractory containing a refractory mixture of alumina (Al 2 O 3 ) and silicon carbide (SiC) to which alumina cement, zircon and an alumina binder are added. The refractory exhibits high strength and density as well as significantly improved corrosion resistance, which is due to the reaction of zircon with calcium oxide (CaO), greatly suppressing corrosion by slag. Use of the alumina binder provides fast drying and strength sufficient for handling. Since shrinkage hardly occurs after heat treatment and low porosity and high strength can be obtained, the refractory is very suitable for use, in particular, a gasifier.
Abstract translation:公开了一种不均匀的耐火材料,其包含氧化铝(Al 2 O 3) sub>和碳化硅(SiC)的耐火混合物,氧化铝水泥,锆石和氧化铝粘结剂被加入到其中。 耐火材料表现出高的强度和密度以及显着提高的耐腐蚀性,这是由于锆石与氧化钙(CaO)的反应,极大地抑制了炉渣的腐蚀。 氧化铝粘结剂的使用提供了快速干燥和足够的强度以进行处理。 由于热处理后几乎不发生收缩,并且可以获得低孔隙率和高强度,耐火材料非常适合用于特别是气化器。
Abstract:
Disclosed is a refractory material for use in a coal gasifier reactor, which has strong resistance to corrosion by coal slag and can be used at high temperatures of 1500 ºC or higher. The disclosed refractory material composition includes: 100 parts by weight of a refractory material which is a mixture of spinel and silicon carbide at a mixing ratio of 25:75-75:25 based on weight; 1-15 parts by weight of submicron-sized α-alumina; and 1-10 parts by weight of boehmite. Since the disclosed refractory material does not contain chromium oxide, it is an environment-friendly refractory material that can be used at high temperatures of 1500 ºC or higher without evaporation of chromium oxide.
Abstract:
The present invention relates to a method of producing hydrogen by splitting water on a solid acid material. Specifically, the method comprises: continuously introducing a water-adsorbed solid acid into a reactor made of a heat-resistant and pressure-resistant material in a state in which the internal temperature of the reactor is maintained at 500~1500 K; splitting the water adsorbed on the solid acid to produce hydrogen; discharging the solid acid used in the splitting of the water from the reactor; adsorbing water on the discharged solid acid; and introducing the water-adsorbed solid acid again into the reactor. According to the invention, the amount of hydrogen produced by splitting of water can be increased by adsorbing a desired amount of water on a solid acid and continuously introducing the water-adsorbed solid acid into a reactor.
Abstract:
A motion of a model including a joint, at least one body part that rotates with respect to the joint, and a plurality of inertial sensors attached to each body part and measuring a rotational motion of the body part is tracked by obtaining a rotational matrix of a sensor coordinate system fixed to each of the inertial sensors with respect to an inertial coordinate system fixed to ground, by using a signal measured by the inertial sensor attached to each body part; obtaining a rotational matrix of the sensor coordinate systems with respect to a body part coordinate system fixed to each body part, by using an obtained rotational matrix value of the sensor coordinate system; obtaining a rotational matrix of each body part coordinate system with respect to the inertial coordinate system, by using a calculated rotational matrix of the sensor coordinate systems; and calculating a joint variable with respect to each body part, by using a calculated rotational matrix of the body part coordinate system.
Abstract:
A monomer composition for polymerizing a branch-type silsesquioxane polymer is disclosed. The monomer composition includes hydroxy-substituted cyclic siloxane in a solvent, and the hydroxy-substituted cyclic siloxane includes stereoisomers of cyclic siloxane of cis, trans, random and twist structures at controlled ratios. Also disclosed are a branch-type silsesquioxane polymer synthesized by polymerizing the monomer composition for polymerizing a branch-type silsesquioxane polymer, and a method for synthesizing the same. In accordance with the disclosure, the isomers can be isolated stably at desired ratios. The isolated isomers may be polymerized into polymers of various types. Since the polymers exhibit low dielectric property, they may be utilized as low dielectric materials.
Abstract:
Disclosed herein is a linear effusion cell, which is used in a vacuum deposition system, including: a crucible made of pyrolytic boron nitride (PBN), having an open upper portion and containing a raw material; a first heat generating unit formed on an outer surface of the crucible and having a pattern suitable for heating; an array of orifices formed through the lateral sides of the crucible and the first heat generating unit.
Abstract:
A telepresence robot may include a manual navigation unit configured to move the telepresence robot according to navigation information received from a user device; an autonomous navigation unit configured to detect environment of the telepresence robot and control the movement of the telepresence robot using the detected result; a motion control unit comprising a database related to at least one motion, the motion control unit configured to receive selection information on the motion of the database and actuate the telepresence robot according to the selection information; and an output unit configured to receive expression information of a user from the user device and output the expression information. The telepresence robot may be applied to various fields such as language education by a native speaking teacher, medical diagnoses, teleconferences, or remote factory tours.
Abstract:
The present invention relates to a thieno[3,2-d]pyrimidine derivative of formula (I), or a pharmaceutically acceptable salt, hydrate or solvate thereof, which has an excellent inhibitory activity on protein kinases, and a pharmaceutical composition comprising the same is effective in preventing or treating abnormal cell growth diseases.
Abstract:
The present invention relates to a novel bicyclic heteroaryl derivative, a pharmaceutically acceptable salt thereof, a hydrate thereof, and a solvate thereof having an improved inhibitory activity for protein kinases, and a pharmaceutical composition for preventing or treating an abnormal cell growth disorder comprising same as an active ingredient.
Abstract:
Disclosed are a 2,7-substituted thieno[3,2 -d ]pyrimidine compound having a protein kinase inhibition activity, a pharmaceutically acceptable salt, and a pharmaceutical composition for prevention and treatment of diseases caused by abnormal cell growth comprising the compound as an effective ingredient. Since the novel 2,7-substituted thieno[3,2 -d ]pyrimidine compound exhibits superior inhibition activity against various protein kinases involved in growth factor signal transduction, it is useful as an agent for preventing or treating diseases caused by abnormal cell growth.