Abstract: The present invention relates to a pharmaceutical composition for preventing or treating chronic kidney disease, the composition including graphene quantum dots as an active ingredient. Graphene quantum dots according to the present invention were observed to exhibit the effects of decreasing the expression of fibronectin, collagen 1al, Bax, TGF-?1, Smad2/3, ?-SMA, etc., which are renal fibrosis-related proteins, and increasing the expression of E-cadherin, Smad7, MnSOD, and SOD1, and thereby suppress renal fibrosis. Accordingly, it is expected that the graphene quantum dots according to the present invention will be able to be effectively used in the field of developing agents for treating or alleviating chronic kidney disease caused by renal fibrosis.

Abstract: The present invention relates to a device for realizing beam-forming in CDMA mobile telecommunication system by employing smart antenna technique and method thereof, which forms multiple fixed beams in a sector, and uses multiple fixed beams to form the traffic channel with narrow beams and the common channel with sector beams simultaneously in the same smart antenna system, and overcomes the problem of inconsistency of phrases of respective channels due to the variations of time and temperature without complicated correction technique, thereby improving the capacity and performance of CDMA system with multiple antennas.

Abstract: The present invention provides a new process for producing biodiesel from renewable oil under lipase catalysis in an organic medium reaction system. In this process, a short chain alcohol ROH is used as an acyl acceptor, a relatively hydrophilic organic solvent having no negative effect on the reactivity of lipase is used as the reaction medium, and a renewable oil raw material is catalyzed by a lipase to synthesize biodiesel through a transesterification reaction. In the process of the present invention, the renewable oil raw material can be almost completely converted into biodiesel and a byproduct glycerin, and the yield of the biodiesel is 94% or more. This new type organic medium reaction system promotes the solubility of the short chain alcohol in the renewable oil raw material, and dissolves part of the byproduct glycerin.

Abstract: This invention provides an airlift loop reactor without the need for external gases, which comprises main reactor (1), gas circulation line (2), gas punip (3), jacket (4), gas inlet (5), gas outlet (6), flow guider (7), gas flowmeter (8), feed inlet (9) and discharge opening (10). It is characterized by: connecting the gas outlet (6) on top of the airlift loop reactor to the gas inlet (5) at the bottom of the reactor, and installing the gas pump (3) in gas circulation line (2), hence directly using the internal gases as the circulation impetus, so that gases are directed by the gas circulation line (2) back to the bottom of the reactor after flowing out from the top of the reactor and then re-ejected into the reactor by the gas pump (3) and used as circulation impetus again. Compared to common airlift loop reactors which use external gases as the impetus; the airlift loop reactor of the present invention effectively reduces the cost of using external gases and hence diminishes production costs.

Abstract: The present invention provides a new process for producing biodiesel from renewable oil under lipase catalysis in an organic medium reaction system. In this process, a short chain alcohol ROH is used as an acyl acceptor, a relatively hydrophilic organic solvent having no negative effect on the reactivity of lipase is used as the reaction medium, and a renewable oil raw material is catalyzed by a lipase to synthesize biodiesel through a transesterification reaction. In the process of the present invention, the renewable oil raw material can be almost completely converted into biodiesel and a byproduct glycerin, and the yield of the biodiesel is 94% or more. This new type organic medium reaction system promotes the solubility of the short chain alcohol in the renewable oil raw material, and dissolves part of the byproduct glycerin.

Abstract: The present invention relates to a device for realizing beam-forming in CDMA mobile telecommunication system by employing smart antenna technique and method thereof, which forms multiple fixed beams in a sector, and uses multiple fixed beams to form the traffic channel with narrow beams and the common channel with sector beams simultaneously in the same smart antenna system, and overcomes the problem of inconsistency of phrases of respective channels due to the variations of time and temperature without complicated correction technique, thereby improving the capacity and performance of CDMA system with multiple antennas.