Abstract: A broadband anti-reflection apparatus for use with terahertz radiation includes a layer having an outer surface comprising a plurality of pyramid structures having about a 30 ?m to about a 110 ?m period, and wherein reflectance of the terahertz radiation is reduced compared to a layer comprising a planar outer surface. Also disclosed is a method for modifying terahertz radiation which includes receiving terahertz radiation on a device having an anti-reflection layer having an outer surface comprising a plurality of pyramid structures having about a 30 ?m to a 110 ?m period, and modifying the terahertz radiation passing through the device or processing the terahertz radiation in the device.

Abstract: Provided is a power amplifier including: a depletion mode high electron mobility transistor (D-mode HEMT) configured to amplify a signal inputted to a gate terminal and output the amplified signal through a drain terminal; an input matching circuit configured to serially ground the gate terminal; and a DC bias circuit connected between the drain terminal and a ground. Through the foregoing configuration, the HEMT may be biased only by a single DC bias circuit without any biasing means to provide a negative voltage. Also, superior matching characteristic may be provided in various operation frequency bands through a shunt inductor and a choke inductor.

Abstract: An apparatus for manufacturing nonwoven fabric including a spinning nozzle, a fiber extension device, a receiver device and a sprinkler is provided. The spinning nozzle is filled with a spinning solution and has a plurality of spinners, where each of the spinners includes a spinning port and a main gas port surrounding the spinning port. The fiber extension device is disposed under the spinning nozzle and includes at least one secondary gas supply device. The secondary gas supply device has an arc gas distribution portion, such that the direction of gas ejected from the secondary gas supply device is the same as the direction of gas ejected from the main gas port. The receiver device is disposed under the fiber extension device. The sprinkler is disposed above the fiber extension device or the receiver device.

Abstract: The present invention discloses cephalomannine derivatives of general formula (I), a process for preparation of such cephalomannine derivatives, a composition containing such compounds, and use of said compounds in the manufacture of a medicament for the treatment of tumors, especially multidrug resistant tumors.

Abstract: A foreground image separation method is disclosed to separate dynamic foreground and static background in a sequence of input images which have been processed either with automatic white balance or brightness control by the camera. First, an input image is received from the camera, and then a white balance or brightness compensation is performed to the input image according to a reference image to generate a compensated image with background color and background brightness which are approximately similar to that of the reference image. Finally, a background subtraction algorithm is performed to the compensated image to generate a background separation result. The background subtraction algorithm could be a Gaussian Mixture Model based algorithm. The method could process successive images received from the camera to continuously generate background separation results and update the reference image accordingly, such that video surveillance system could adapt to the change of illumination.

Abstract: Provided is an optical interconnection device. The optical interconnection device include: a first semiconductor chip disposed on a germanium-on-insulator (GOI) substrate; a light emitter on the GOI substrate, the light emitter receiving an electrical signal from the first semiconductor chip and outputting a light signal; a light detector on the GOI substrate, the light detector sensing the light signal and converting the sensed light signal into an electrical signal; and a second semiconductor chip on the GOI substrate, the second semiconductor chip receiving the electrical signal from the light detector.

Abstract: Disclosed is a method for preparation of a nickel-carbonitride sphere, which includes preparing a melamine-formaldehyde resin, adding a nickel salt and a surfactant to the melamine-formaldehyde resin to prepare a nickel-melamine resin mixture, and conducting spray pyrolysis for the mixture to produce nickel-containing powder including nickel-carbonitride spheres. In addition, this method may further include thermal treatment of the nickel-containing powder.

Abstract: A method of single photon emission computed tomography (SPECT) using dual-isotopes of [99mTc]TRODAT-1 and [123I]ADAM is provided. Through SPECT, anomalies in dopamine and serotonin system are diagnosed with their photos in one examination. Thus, cost and labor for two examinations are saved and uses of SPECT are reduced.

Abstract: Disclosed are an RFID reader, an RFID tag, and a controlling method thereof. The RFID tag may include a state information generator to generate state information of the RFID tag, a receiver to receive an activation command including reference state information of the RFID tag, and a controller to activate the RFID tag based on the state information and the reference state information. The RFID tag may be selectively activated according to an inner state of the RFID tag.

Abstract: A digital data transmission device is provided comprising optical waveguide architecture, a sideband generator, a modulation controller, an optical filter, a data mapping unit, and a phase controller. The optical waveguide architecture is configured to direct an optical signal through the sideband generator and the optical filter. The sideband generator comprises an electrooptic interferometer comprising first and second waveguide arms. The modulation controller is configured to generate an electrical drive signal to drive the sideband generator at a control voltage that is substantially larger than V? to generate optical frequency sidebands about a carrier frequency of the optical signal. The optical filter is configured to discriminate between the optical frequency sidebands and the optical carrier frequency such that optical sidebands of interest can be directed through the optical waveguide architecture as an optical millimeter wave signal.

Abstract: A greenhouse gas monitoring system collects information about greenhouse gas and analyzes a greenhouse gas emissions distribution using the collected information about greenhouse gas. Thereafter, the greenhouse gas monitoring system generates a greenhouse gas distribution map by mapping the greenhouse gas emissions distribution to a three-dimensional digital map and provides the greenhouse gas distribution map to the user according to a user's request.

Abstract: An input apparatus including an optical mouse module and a mouse pad module is provided. The optical mouse module includes a light source and an optical sensor. The light source is adapted to emit a light beam. The optical sensor has a sensible distance. The mouse pad module is disposed on the optical mouse module. The mouse pad module includes a sliding sheet elastically coupled to the optical mouse module. The sliding sheet is adapted to move in a three-dimensional space. The optical sensor and the sliding sheet are arranged in an arrangement direction. An operation method of the input apparatus is also provided.

Abstract: Provided is a floating-type microbial fuel cell capable of effectively generating energy from organic contaminants of contaminated waters. The floating-type microbial fuel cell includes a cathode, an anode electrically connected to the cathode, and a floating unit connected to the cathode and/or the anode and floatable in a substrate solution, wherein the cathode is positioned at a region in the substrate solution having a dissolved oxygen concentration higher than that of a region at which the anode is positioned, and the anode is positioned at a region in the substrate solution having an amount of electrons generated by microorganisms larger than that of a region at which the cathode is positioned.

Abstract: The present invention relates to use of an active ingredient selected from ginsenoside Rg1, its metabolites ginsenoside Rh1 and Ppt for preparing a medicament and a health care product for improving sexual function of male mammals, and for providing the effect of spermatogenesis. The present invention further relates to a pharmaceutical composition for improving sexual function of male mammals, and/or for providing the effect of spermatogenesis, which comprises at least one active ingredient selected from ginsenoside Rg1, its metabolites ginsenoside Rh1 and Ppt, and a pharmaceutically acceptable excipient.

Abstract: A base station generates a ranging bitmap for indicating whether a ranging code is received through a corresponding ranging channel for each ranging channel, and transmits it to terminals. The terminals check whether the ranging code is successfully transmitted through the ranging bitmap provided by the base station and ranging code identity information included in a ranging response message.

Abstract: Spherical boron nitride nanoparticles having an average particle diameter is less than 50 nm is obtained by a method of synthesizing spherical boron nitride nanoparticles including the following steps; heating a mixture of boric acid ester and nitrogen gas in ammonia gas and argon gas to form reaction product; crystallizing reaction product to form precursor of spherical boron nitride nanoparticles; and, heating the precursor in inert gas.

Abstract: The present invention relates to a terahertz wave generator and a method of generating high-power terahertz waves using the terahertz wave generator. The terahertz wave generator includes a hollow spherical body, and a focusing lens installed in a cutout portion of the spherical body or an opening formed in the cutout portion, wherein an inner surface of the spherical body is coated with metal. In the method, frequencies having different levels are incident through the focusing lens or the opening to generate a plurality of air plasmas, and the air plasmas cause continuous focusing the metal-coated inner surface and hollow space of the spherical body, thus generating high-power terahertz waves. According to the present invention, a plurality of air plasmas is continuously generated, thus solving the problem in which the light intensity of terahertz waves generated using one air plasma is low.

Abstract: Provided is a nanocomplex comprising a core consisting of a metal; and a periphery being formed on a surface of the core to surround the core and consisting of an inorganic substance and a conductive polymer

Abstract: An air foil bearing includes a top foil, one or more orifice tubes and two or more bump foil strips disposed within a housing. The top foil is forms a substantially circular shape having one or more sets of top foil orifice holes. Each set of top foil orifice holes has at least three top foil orifice holes along a circumference of the top foil. An orifice tube is provided for each set of top foil orifice holes. The orifice tube includes a flat side having a set of tube orifice holes connected to an outer surface of the top foil. The bump foil strip is attached to the outer surface of the top foil adjacent to each side of each orifice tube. Another embodiment uses a housing with an inner surface having a curved polygonal cross-sectional shape with an odd number of curved sides.

Abstract: The present disclosure relates to reagents (antigenic and/or immunogenic reagents) and kits that are useful in a variety of in vitro, in vivo, and ex vivo methods including, e.g., methods for inducing an immune response, or for generating an antibody, in a subject. The reagents described herein can be used in the treatment or prevention of HIV-1 infections. In addition, the disclosure provides methods and compositions useful for designing (or identifying) an agent that binds to an membrane proximal external region (MPER) of an HIV-1 gp160 polypeptide or an agent that inhibits the fusion of an HIV-1 particle to a cell.