摘要:
Disclosed are vitamin C derivatives linked with a peptide or a pharmaceutically acceptable salt thereof, a method of preparing the same, and a composition comprising the same.
摘要:
An apparatus and method for manufacturing a steel tube are provided. The apparatus includes: a tube-forming device for forming a steel plate into a steel tube; a heat treatment device connected in-line to the tube-forming device to heat the steel tube to a high temperature; a pre-treatment device for annealing the steel tube and providing a reduction atmosphere; and a plating device including a pot for storing a SeAHLume alloy composed of aluminum and zinc in a molten state, a level block selectively inserted into the molten alloy to adjust a level of the molten alloy, and a plating part into which the molten alloy flows in response to insertion of the level block and through which the steel tube passes substantially vertically. Therefore, it is possible to manufacture a steel tube having a plated surface to improve its corrosion-resistance.
摘要:
The present invention relates to a method and system for detecting a keyword whose number of being inputted from a user terminal is rapidly increased, and more particularly, to a method and system which generate rapid increase standard quotient by using the average and standard deviation for each keyword and compare the rapid increase standard quotient with measured input number in order to detect a keyword whose input number is rapidly increased.
摘要:
Provided are a compound having an activity for inhibiting dioxin toxicity, a pharmaceutical composition including the compound and a method of treating disease resulting from dioxin toxicity using the compound. More particularly, the compound is represented by formula 1: where, R1 may be a hydrogen atom, a C1-C5 alkyl group or an alkylketone group; and R2 may be a hydrogen atom, a C1-C10 alkyl group or —COR3, wherein R3 may be a C1-C5 alkyl group, a C1-C5 alkylamide group, a C3-C12 aryl group or a heteroaryl group. A compound having an activity for inhibiting dioxin toxicity by directly antagonizing a dioxin receptor and specifically lessening dioxin-associated toxicity without an adverse effect resulting from an overdose of the compound or an outbreak of another disease can be obtained.
摘要:
A ceramic filter and method for preparing the same. The method for preparing the ceramic filter according to the present invention is characterized in comprising the steps of: (a) coating firstly a ceramic green paper prepared by using a slurry solution comprising ceramic fiber of 0.1-10 length, with an aluminum silicate solution and drying the firstly coated paper; (b) coating secondly the dried ceramic green paper with an aluminum phosphate solution and drying the secondly coated paper; and (c) calcining the dried ceramic green paper obtained from the step (b). The ceramic filter according to the present invention has excellent mechanical strength since the bonding strength between ceramic fibers is very high, and shows good porosity, gas permeability, and efficiency for capturing microparticles since the pores between the ceramic fibers are less blocked, and thus can be very usefully applied to gas exhaustion system for automobile.
摘要:
A plastic film bag, including a seam welded part, a plastic film bag body part, and a tear tape to open the plastic film bag, is disclosed. In the plastic film bag, the tear tape is made of a monodirectionally oriented polypropylene film and is attached to an outer surface of the plastic film bag at a predetermined position between the seam welded part and the plastic film bag body part. Because the plastic film bag of the present invention is realized such that the tear tape is attached to the outer surface of the plastic film bag using an adhesive, the tear tape does not compromise the function of sealing the package, but allows the package to be completely sealed, unlike a conventional tear tape attached to the inner surface of a plastic film bag.
摘要:
Provided is a wireless packet communication method, and more particularly, a method and apparatus for enabling low-power communication by providing separate driving clocks optimized for a lower part for performing the function of a physical layer part and an upper part for performing the function of an upper layer above the physical layer in a wireless packet communication system. The method includes a first clock providing step of measuring actual data transmission and reception rates at a predetermined period, setting up a frequency (F1) of a first clock based on the measured rates, and providing the first clock to the upper part and a second clock providing step of determining a transfer mode of the wireless packet communication system, detecting a frequency (F2) of a second clock selected according to the determined transfer mode, and providing the second clock to the lower part.
摘要:
The present invention provides a semiconductor light-emitting device. The light-emitting device comprises a first conductive clad layer, an active layer, and a second conductive clad layer sequentially formed on a substrate. In the light-emitting device, the substrate has one or more side patterns formed on an upper surface thereof while being joined to one or more edges of the upper surface. The side patterns consist of protrusions or depressions so as to scatter or diffract light to an upper portion or a lower portion of the light-emitting device.
摘要:
Disclosed is a method of fabricating nitride semiconductors in a MOCVD reactor. GaN is first deposited on an inner wall of the MOCVD reactor, and a sapphire substrate is loaded into the MOCVD reactor. The sapphire substrate is heated and etching gas is injected into the MOCVD reactor. NH3 gas is injected into the MOCVD reactor to nitrify the surface of the sapphire substrate. A nitride semiconductor layer is grown on the nitrified sapphire substrate. By surface-reforming the sapphire substrate and then growing the nitride semiconductor layer on the surface-reformed sapphire substrate via MOCVD without formation of a low temperature buffer layer, an excellent nitride semiconductor structure can be realized. In this circumstance, the nitride semiconductor layer for example of GaN can be grown effectively on the surface-treated sapphire substrate because GaN deposition occurs on the sapphire substrate while it is etched.
摘要:
Disclosed herein is a nitride-based semiconductor light-emitting device. The nitride-based semiconductor light-emitting device comprises an n-type clad layer made of n-type Alx1Iny1Ga(1−x1−y1)N (where 0≦x1≦1, 0≦y1≦1, and 0≦x1+y1≦1), a multiple quantum well-structured active layer made of undoped InAGa1−AN (where 0
摘要翻译:本文公开了一种氮化物基半导体发光器件。 氮化物系半导体发光元件包括由n型Al x In 1(1-x1-y1)构成的n型覆盖层, N(其中0 <= X 1 <= 1,0 <= Y 1 <= 1,AND 0 <= X 1 由未掺杂的In N a Ga 1-A N(N 1)组成的多量子阱结构的有源层, 其中形成在n型覆盖层上的0 1-y2 N(其中0 <= Y2-2 <1)和由p型Al < (1-x3-y3)N(其中0