摘要:
The present invention relates to a sustained-release formulation comprising choline alfoscerate or a pharmaceutically acceptable salt thereof, and a preparation method thereof. More particularly, the present invention relates to a sustained-release pharmaceutical composition comprising a drug compartment including choline alfoscerate or a pharmaceutically acceptable salt thereof, a coating compartment that is formed on the surface of the drug compartment, and a pharmaceutically acceptable sustained-release base material, and a preparation method thereof.
摘要:
The present invention relates to a sustained-release formulation comprising choline alfoscerate or a pharmaceutically acceptable salt thereof, and a preparation method thereof. More particularly, the present invention relates to a sustained-release pharmaceutical composition comprising a drug compartment including choline alfoscerate or a pharmaceutically acceptable salt thereof, a coating compartment that is formed on the surface of the drug compartment, and a pharmaceutically acceptable sustained-release base material, and a preparation method thereof.
摘要:
The present invention relates to a sustained-release formulation comprising donepezil or a pharmaceutically acceptable salt thereof. More particularly, the present invention relates to a sustained-release pharmaceutical composition comprising donepezil or a pharmaceutically acceptable salt thereof, and one or more sustained-release bases selected from the group consisting of polyvinyl acetate and fatty acid ester, and a preparation method thereof.
摘要:
This invention relates to tacrolimus injection comprising tacrolimus as an active ingredient, macrogol 15 hydroxystearate as a surfactant and a non-aqueous solvent.
摘要:
In a fuel cell assembly comprising at least one cell including an electrolyte layer, a pair of gas diffusion electrode layers interposing said electrolyte layer between them, and a pair of flow distribution plates (5) for defining passages (10, 11) for fuel and oxidizer gases that contact said gas diffusion electrode layers, a heater (62) and various sensors (61a, 61b and 61c) are formed at least one of the flow distribution plates so that the work needed for installing the heater and sensors is simplified. By embedding them in a substrate, the need for a complex sealing arrangement can be eliminated. In particular, if each flow distribution plate is formed by performing an etching process on a substrate, and forming the heater and sensors in succession to the step of forming each flow distribution plate, the installation of sensors and fabrication of the fuel call are simplified.
摘要:
The present invention relates to lettusic acid derivatives of formula (I), a preparation process thereof and a pharmaceutical composition comprising same as an active ingredient. Lettusic acid or its derivative of formula (I) has a dopamine beta -hydroxylase inhibitory activity, wherein X and Y, which are the same or different, are OR1 or (II). R1 is a hydrogen atom, an optionally substituted lower alkyl group or an alkaline metal, R2 and R3 are independently a hydrogen atom or an optionally substituted lower alkyl group, or they are linked together to form a saturated or unsaturated ring having one or more N or O atoms.
摘要:
Disclosed are a light emitting device having a zener diode therein and a method of fabricating the light emitting device. The light emitting device comprises a P-type silicon substrate having a zener diode region and a light emitting diode region. A first N-type compound semiconductor layer is contacted to the zener diode region of the P-type silicon substrate to exhibit characteristics of a zener diode together with the P-type silicon substrate. Further, a second N-type compound semiconductor layer is positioned on the light emitting diode region of the P-type silicon substrate. The second N-type compound semiconductor layer is spaced apart from the first N-type compound semiconductor layer. Meanwhile, a P-type compound semiconductor layer is positioned on the second N-type compound semiconductor layer, and an active layer is interposed between the second N-type compound semiconductor layer and the P-type compound semiconductor layer. Accordingly, it is possible to provide a light emitting device having a zener diode including the P-type silicon substrate and the first N-type compound semiconductor layer, and a light emitting diode including the second N-type compound semiconductor layer, the active layer and the P-type compound semiconductor layer in a single chip, so that damage to the light emitting diode due to electrostatic discharge can be prevented.
摘要:
The present invention relates to a gallium nitride-based compound semiconductor. The present invention provides a gallium nitride -based compound semiconductor comprising a substrate, a buffer layer containing boron and formed on the substrate, and a gallium nitride- based semiconductor layer formed on the buffer layer. The present invention further provides a method of fabricating the gallium nitride-based compound semiconductor. According to the present invention, the buffer layer containing boron is formed as a single film, a multi-layered film or a superlattice layer, thereby reducing crystal defects with respect to the semiconductor layer formed on the buffer layer and improving the crystallinity of the semiconductor layer, resulting in a semiconductor layer without crystal defects. Thus, it is possible to improve the performance and reliability of a device.
摘要:
The present invention provides a pharmaceutical composition in the form of pellet wherein controlled release of pharmacologically active substances can be effected. The present invention is characterized by a pharmaceutical composition for controlled release pellets, consisting es¬ sentially of: a) one or more pharmacologically active substances; b) one or more lipids having a low-melting point of less than 70°C and existing as a solid at room temperature; c) one or more hydrophilic substances; and d) one or more water-insoluble binding agents, prepared without melting the lipids.
摘要:
In a fuel cell assembly comprising a plurality of cell each including an electrolyte layer (2), a pair of diffusion electrode layers (3, 4) interposing the electrolyte layer between them, and a pair of flow distribution plates (5) for defining passages (10, 11) for fuel and oxidant fluids that contact the diffusion electrode layers, the fuel cells are arranged on a common plane. Therefore, the vertical dimension of the fuel cell assembly can be minimized, and a fuel cell assembly of favorable electric properties can be achieved. Each flow distribution plate is typically formed with communication passages for communicating fluid passages defined on each side of the electrolyte layer at a prescribed pattern. The communication passages and through holes communicate the fluid passages in such a manner that adjacent fuels cells have opposite polarities.