摘要:
Disclosed are an annular-type distributor having a multiple slit layer including at least two annular layers, which are stacked while being spaced by a predetermined distance and in which at least one slit is formed so as to receive or discharge fluid; a reactor or a heat exchanger having the annular-type distributor; and a method of producing unsaturated aldehyde or unsaturated acid from olefin by catalytic gas phase oxidation reaction using the reactor.
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 method for forming a multi-wavelength semiconductor laser device. The method comprises sequentially forming an AlGaAs-based epitaxial layer for a first semiconductor laser diode and an etching stop layer composed of AlxGayIn(1-x-y)P (0≦x≦1, 0≦y≦1) on a substrate and sequentially growing an n-type GaAs flattening buffer layer and an AlGaInP-based epitaxial layer for a second semiconductor laser diode on the substrate, after selectively removing the AlGaAs-based epitaxial layer and the etching stop layer.
摘要翻译:本发明提供一种形成多波长半导体激光器件的方法。 该方法包括顺序形成用于第一半导体激光二极管的AlGaAs基外延层和由AlxGayIn(1-xy)P(0≤x≤1,0<= y <= 1)组成的蚀刻停止层) 在选择性地除去基于AlGaAs的外延层和蚀刻停止层之后,在衬底上顺序生长n型GaAs平坦化缓冲层和用于第二半导体激光二极管的AlGaInP基外延层。
摘要:
An electro-luminescence display device and a driving method thereof for assuring a high aperture ratio are disclosed. In the device, a plurality of pixel cells is arranged in a matrix type. A plurality of data electrodes applies video signals to the pixel cells. A plurality of gate lines are connected to the pixel cells positioned adjacently to each other at the upper/lower sides thereof in such a manner to cross the data electrodes.
摘要:
A backlight unit includes a bottom cover having a bottom surface and side surfaces, a plurality of light emitting diodes installed within the bottom cover for emitting a plurality of lights, a reflection plate within the bottom cover, the reflection plate having a variety of angles for mixing the plurality of lights into a white light, and a diffusion plate attached to the bottom cover for diffusing the white light.
摘要:
The present invention relates to a composition for preventing at least one plant disease resulted from infection of plant pathogens and a method for preparing the same. Particularly, the composition contains extract of at least one plant selected from the group consisting of Coptis chinensis Franch., Phellodendron genus plant, Sanguinaria canadensis and Chelidonium majus var. asiaticum which are natural plants having anti-plant pathogen activity or berberine which is purified therefrom. The composition of the present invention can be effectively used for preventing disease pathogens such as plant powdery mildew, anthracnose of pepper, damping-off of cucumber and gray mold rot of strawberry resulted from infection of plant pathogens such as Colletrotrichum gloeosporiodes, Pythium ultimum or Botrytis cinerea. For an alternative method for preparing the composition comprising berberine and/or derivatives thereof, the present invention provides various optimal culture condition and two phases cultivation methods using Phellodendron genus plant.
摘要:
Disclosed herein is nanoemulsion prepared by emulsifying main metabolites of ginseng saponin obtained by conversion of glucose, i.e. compound K (20-O-β-D-glucopyranosyl-20(S)-protopanaxadiol), ginsenoside F1 (20-O-β-D-glucopyranosyl-20(S)-protopanaxatriol) and compound Y (20-O-[α-L-arabinopyranosyl(1→6)-β-D-glucopyranosyl]-20(S)-protopanaxadiol); and admixture-thereof, in fine emulsion or liposome with dermotropic emulsifier by nano-emulsification; and having enhanced skin penetration, so to be effective in promoting proliferation of fibroblast and biosynthesis of collagen.
摘要:
An optical receiver for use in an Optical Network (ON) such as a WPON based on an SCMA scheme. The optical receiver apparatus for use in a Central Office contained in an ON includes: an optical power divider for dividing an input optical signal into first and second optical signals; a frequency generator for generating a oscillation frequency; a phase shifter for shifting a phase of the oscillation frequency; a first optical modulator for modulating the first optical signal with the oscillation frequency; a second optical modulator for modulating the second optical signal with the oscillation frequency phase-shifted; a first photodiode for converting the optical signal modulated by the first optical modulator into a first RF signal; a second photodiode for converting the optical signal modulated by the second optical modulator into a second RF signal; and a differential amplifier for differentially amplifying the first RF signal and the second RF signal.
摘要:
A method of forming a virtually defect free lattice mismatched nanoheteroepitaxial layer is disclosed. The method includes forming an interface layer on a portion of a substrate. The interface layer can be, for example, SiO2, Si3N4, Al2O3, or W. A template can then be made by forming a plurality of touchdown windows in the interface layer. A plurality of seed pads can then be formed in the touchdown windows by exposing the interface layer to a material comprising a semiconductor material. The plurality of seed pads, having an average width of about 1 nm to 10 nm, can be interspersed within the interface layer and contact the substrate. A first layer is formed by lateral growth of the seed pads over the interface layer. A second layer is then formed on the first layer. The second layer can be for example, one of a Group III-V and II-VI heteroepitaxial film.
摘要翻译:公开了形成几乎无缺陷的晶格失配的纳米外延层的方法。 该方法包括在衬底的一部分上形成界面层。 界面层可以是例如SiO 2,Si 3 N 4 N 2,N 2 O 2,N 2 > 3 SUB>或W.然后可以通过在界面层中形成多个触地窗来制作模板。 然后可以通过将界面层暴露于包含半导体材料的材料来在触地窗中形成多个种子垫。 具有约1nm至10nm的平均宽度的多个种子垫可以分散在界面层内并与基底接触。 通过界面层上的种子垫的横向生长形成第一层。 然后在第一层上形成第二层。 第二层可以是例如III-V族和II-VI族异质外延膜之一。
摘要:
A porous solid acid catalyst for producing light olefins is prepared through pillaring and a solid state reaction of a raw material mixture. The catalyst is made of a porous material having a crystalline structure that is different from that of the raw material mixture. The catalyst exhibits excellent catalytic activity (i.e., conversion and selectivity) in the production of light olefins from hydrocarbon feeds such as full range naphthas.