Abstract:
A method for providing video content in a video conference includes sending, by a conference terminal, a video content access request to a video conference system, controlling a VOD proxy server to obtain video streams from a streaming media application system and providing the video streams to the video conference system. A method for providing video content for a video conference and a VOD proxy server, a video conference system and an integrated videoconferencing service system thereof are also provided according to embodiments of the present disclosure. According to the embodiments of the present disclosure, the video content in the course of a video conference is no longer subjected to the type of video sources coupled to the conference terminal. The conference terminal may introduce various video contents supported by the streaming media application system into the video conference. Accordingly, auxiliary functions of the video conference are enriched.
Abstract:
An illumination apparatus has a frame with a plurality of fins, at least one thermally conductive sheet and at least one illumination module. The illumination modules are positioned on the frame, and the thermally conductive sheets are positioned between the frame and the illumination modules. Thus, the illumination modules generate light beams and heat, which is carried away by the frame with a plurality of fins.
Abstract:
Methods and compositions for inhibiting at least one isoform of nitric oxide synthase are provided. Pharmaceutical compositions include derivatives of arginine as well as dipeptides and dipeptide analogs that contain nitroarginine or another unnatural amino acid. Compositions can be used to selectively inhibit particular isoforms of nitric oxide synthase.
Abstract:
A high temperature protective valve and the use thereof in a shower head, wherein the high temperature protective valve includes a body, the body having a complete one-way waterway, and also a thermo-sensitive assembly and a pivot valve assembly. The thermo-sensitive assembly is fixed inside the body and has a memory alloy body which can be immersed in the waterway and extend and retract along the direction of the flow. The pivot valve assembly is also fixed inside the body downstream waterway of the thermo-sensitive assembly. The pivot valve assembly has a pivot valve plug which is controllable by the thermo-sensitive assembly so as to cut off the waterway. The high temperature protective valve of such a structure has a fast response and can achieve good protective effects at a high temperature.
Abstract:
Cerium doped magnesium barium tungstate luminescent thin film, manufacturing method and application thereof are provided, said method for manufacturing cerium doped magnesium barium tungstate luminescent thin film comprises the following steps: mixing MgO, BaO, WO3 and Ce2O3, sintering for forming sputtering target, forming the precursor of cerium doped magnesium barium tungstate luminescent thin film by magnetron sputtering, annealing the precursor of cerium doped magnesium barium tungstate luminescent thin film, and then forming cerium doped magnesium barium tungstate luminescent thin film. Said cerium doped magnesium barium tungstate luminescent thin film exhibits high luminescence efficiency and high light emitting peaks in red and blue regions. Said method presents the advantages of simplified operation, less cost, and suitable for industrial preparation.
Abstract translation:提供铈掺杂的钡钡钨酸盐发光薄膜,其制造方法和应用,所述制造铈掺杂的钡钡钨酸盐发光薄膜的方法包括以下步骤:将MgO,BaO,WO 3和Ce 2 O 3混合,烧结以形成溅射靶,形成 通过磁控溅射法铈铈掺杂镁钡钨酸盐发光薄膜的前体,对铈掺杂的钡钡钨酸盐发光薄膜进行退火,然后形成铈掺杂的钡钡钨酸盐发光薄膜。 所述铈掺杂的钡钡钨酸盐发光薄膜在红色和蓝色区域表现出高发光效率和高发光峰。 所述方法具有操作简单,成本低,适用于工业制备的优点。
Abstract:
Disclosed are an organic electroluminescent device and a preparation method thereof. The organic electroluminescent device is a top-emitting organic electroluminescent device having a reversed structure, and the preparation method is: dissolving zinc oxide with acetic acid to obtain a zinc oxide solution with a concentration of 0.3 g/ml-0.6 g/ml, adding a phthalocyanine substance in a mass of 1%-10% of the mass of the zinc oxide to obtain a mixture, spin-coating the mixture on a glass substrate (1) and then drying to obtain a cathode (2), and then preparing by vapor deposition, an electron injection layer (3), an electron transport layer (4), a luminescent layer (5), a hole transport layer (6), a hole injection layer (7) and an anode (8), successively, so as to obtain the organic electroluminescent device.
Abstract:
The present invention relates to solar cells and discloses a difluoro benzotriazolyl solar cell material and preparation method and use thereof. The solar cell material is represented by formula (I), wherein both R1 and R2, are C1 to C20 alkyl, and n is an integer from 10 to 50. In the difluoro benzotriazolyl solar cell material, since the 1,2,3-benzotriazole solar cell material contains two fluorine atoms, the HOMO energy level is reduced by 0.11 eV, while the fluorine-substituted 1,2,3-benzotriazole has two imido groups with electron-withdrawing ability; the fluorine-substituted 1,2,3-benzotriazole is a heterocyclic compound with strong electron-withdrawing ability, and an alkyl chain can be easily introduced to the N-position of the N—H bond of the benzotriazole. The functional group of the alkyl chain can improve the solar energy conversion efficiency, thus solving the low efficiency problem of solar cells made of the solar cell material.
Abstract:
Provided are a co-polymer of formula (I) of 2,7-fluorene and bithiazole, a method for preparing same, and a solar battery containing same. The structural formula of the copolymer of 2,7-fluorene and bithiazole is as shown by formula (I), wherein both R1 and R2 are C1-C20 alkyl groups, and n is an integer of 10-100. The co-polymer of the present invention has a novel structure, a good dissolving property, an excellent film-forming property, and a high power conversion efficiency, and can be used as the material for a solar battery. Also provided are the method for preparing the co-polymer and the solar battery containing same. The preparation method uses raw materials widely available and has a simple synthesis route.