摘要:
A method and system for searching for a relater term having rapidly increasing popularity is provided. The method includes: analyzing a search log and extracting a daily search frequency for each search term; comparing peaks of the daily search frequency, extracted for each search term in a predetermined period; and analyzing relevance between candidate search terms in which the peaks have occurred together in the predetermined period as a result of the comparison and filtering out a candidate search term having no relevance.
摘要:
The present invention relates to a more advanced preparation method of organic-transition metal hydride as a hydrogen storage material, precisely a more advanced preparation method of organic-transition metal hydride containing aryl or alkyl group that facilitates safe and reverse storage of massive amount of hydrogen.The present invention relates to a preparation method of an organic-transition metal hydride comprising the steps of preparing a complex reducing agent composition by reacting alkali metal, alkali earth metal or a mixture thereof and (C10˜C20) aromatic compound in aprotic polar solvent; and preparing organic-transition metal hydride by reacting the prepared complex reducing agent composition and organic-transition metal halide.The method of the present invention has advantages of minimizing the numbers and the amounts of byproducts by using a complex reducing agent and producing organic-transition metal hydride safely without denaturation under more moderate reaction conditions.
摘要:
A method and system for sorting out a keyword showing a different between two groups is provided. The method includes the steps of: defining a tuple with respect to an N number of keywords and defining a data group including a group of the tuple; creating a keyword value for each of the N number of keywords by using the data group; and creating a keyword group associated with the keyword value, and creating an output group including the keyword group, wherein the two groups includes a first group and a second group.
摘要:
The present invention relates to a more advanced preparation method of organic-transition metal hydride as a hydrogen storage material, precisely a more advanced preparation method of organic-transition metal hydride containing aryl or alkyl group that facilitates safe and reverse storage of massive amount of hydrogen. The present invention relates to a preparation method of an organic-transition metal hydride comprising the steps of preparing a complex reducing agent composition by reacting alkali metal, alkali earth metal or a mixture thereof and (C10-C20) aromatic compound in aprotic polar solvent and preparing organic-transition metal hydride by reacting the prepared complex reducing agent composition and organic transition metal halide. The method of the present invention has advantages of minimizing the numbers and the amounts of byproducts by using a complex reducing agent and producing organic-transition metal hydride safely without denaturation under more moderate reaction conditions.
摘要:
A system and method for non-isothermal temperature cycling (also called Conduction Temperature Cycling) of a semiconductor device. The method includes inserting a semiconductor device into a testing chamber and thermally coupling the semiconductor device to a heating and cooling element via a vacuum holding component. The method further includes heating and cooling a die portion of the semiconductor device with the heating and cooling element and testing the semiconductor device for component failure caused by thermo-mechanical stress induced by the non-isothermal temperature cycling. In one embodiment, the heating and cooling comprises non-isothermal temperature cycling.
摘要:
A method and system for searching for a related term having rapidly increasing popularity is provided. The method includes: analyzing a search log and extracting a daily search frequency for each search term; comparing peaks of the daily search frequency, extracted for each search term in a predetermined period; and analyzing relevance between candidate search terms in which the peaks have occurred together in the predetermined period as a result of the comparison and filtering out a candidate search term having no relevance.
摘要:
Provided is a process for isolating a catalyst from a solution having a copolymer and a catalyst dissolved therein, after performing copolymerization with the catalyst. More specifically the invention provides selection and application of an adsorbent to be used for the isolation.
摘要:
An olfactory display 10 includes a housing 12 having an emitting port 22, and presents a fragrance within a range bounded in terms of time and space. Within the housing 12, a fragrance chamber 14 having an air inlet 26 and a fragrance outlet 24 which is communicated with the emitting port 22 is formed, and in the fragrance chamber 14, a solid-like fragrance source 20 is accommodated. Furthermore, in the fragrance chamber 14, there is provided with a airflow source 16 comprising a diaphragm 34 having a piezoelectric device 32. In presenting a fragrance, an air is sent into the fragrance chamber 14 from the air inlet 26 by the airflow source 16, and accordingly, the air within the fragrance chamber 14, which including a gas-like fragrance component volatilized from the fragrance source 20 is emitted from the emitting port 22 passing through the fragrance outlet 24.
摘要:
Disclosed herein is a light-responsive photocatalyst composition, which is a composite oxide semiconductor containing tungsten, and which can efficiently absorb visible light emitted from the sun and light emitted from interior lamps, such as fluorescent lamps, etc., and a method of preparing the light-responsive photocatalyst composition. The visible light-responsive photocatalyst composition can decompose volatile organic compounds or harmful organic matter causing sick house syndrome, even indoors, because it can be activated by visible light outdoors and can respond to light emitted from interior lamps, such as fluorescent lamps, etc.
摘要:
A process and apparatus for separating an olefin from mixed gases containing light olefins is provided. The process includes adsorbing the olefin of an olefin-containing mixed gas in an adsorption column packed with an adsorbent selectively adsorbing the olefin; discharging gases other than the olefin through the outlet of the adsorption column; desorbing the adsorbed olefin by displacement using a desorbent, and separating the olefin from the desorbent, thereby producing a high-purity olefin. The apparatus includes adsorption columns packed with an adsorbent selectively adsorbing an olefin, and at least two distillation columns for separating an olefin/desorbent mixture and an olefin poor stream/desorbent into their components. If the olefin concentration of the off-gas from an olefin rinse step is higher than that of a raw material gas, recovering the olefin from the off-gas is carried out before or after the adsorption step.