Abstract:
An encapsulated getter arranged in vacuum glazing comprising an encapsulating box and a getter placed in the encapsulating box. The encapsulating box forms a closed cavity, and there is a gap between the getter and an inner surface of the encapsulating box. The position of the getter can be fixed with respect to the encapsulating box by filling material which is air permeable and thermal insulating in the gap.
Abstract:
A catalyst for the preparation of dimethyl carbonate from urea and methanol having a composition on weight base of: active component of from 20 to 50 wt %, and carrier of from 80 to 50 wt %, and prepared by equal-volume spraying and impregnating method is disclosed. The method for the synthesis of dimethyl carbonate can be carried out in a catalytic rectification reactor, said method comprising: (1) dissolving urea in methanol to form a methanol solution of urea; and (2) feeding the methanol solution of urea and methanol counter-currently into the reaction zone, wherein the reaction is carried out at conditions including reaction temperature of from 120° C. to 250° C., reaction pressure of from 0.1 MPa to 5 MPa, kettle bottom temperature of from 70° C. to 210° C., stripping section temperature of from 70° C. to 250° C., rectifying section temperature of from 70° C. to 280° C., and reflux ratio of from 1:1 to 20:1. The preparation of the catalyst according to the present invention is simple and has good repeatability, and the catalyst could further enhance the yield of DMC as well as conversion of urea in the catalytic rectification reactor.
Abstract:
A method for photoeluting photocleavable linker-attached chemical compounds, and an apparatus suitable for implementing the method, are disclosed. According to the method, photocleavable linker-attached library compounds are photoeluted from solid support media under conditions of controlled light exposure and controlled temperature. An apparatus suitable for carrying out the present photoelution method includes means for substantially evenly illuminating the photocleavable linker, means for controlling illumination time and intensity, and means for controlling sample temperature.
Abstract:
A method and apparatus for high-throughput identity confirmation, quantitation and purity determination of a compound of interest in a mixture of compounds is disclosed. According to the method, a chemical mixture, such as may be obtained from a chemical library, is processed to obtain a stream having a time-varying composition, such as by using a high pressure liquid chromatograph. The stream is split into two portions or streams for substantially contemporaneous detection in a compound-identifying device, such as a mass spectrograph, and in a compound-quantitating device, such as an evaporative light scattering detector. A peak in a chromatogram obtained from the compound-quantitating device is identified as the compound of interest by cross-correlation, via elution time, with chromatographic results obtained from the compound-identifying device. Once the peak is identified as corresponding to the compound of interest, the corresponding peak area is used for quantitation and purity determination.
Abstract:
A method and apparatus for high-throughput identity confirmation, quantitation and purity determination of a compound of interest in a mixture of compounds is disclosed. According to the method, a chemical mixture, such as may be obtained from a chemical library, is processed to obtain a stream having a time-varying composition, such as by using a high pressure liquid chromatograph. The stream is split into two portions or streams for substantially contemporaneous detection in a compound-identifying device, such as a mass spectrograph, and in a compound-quantitating device, such as an evaporative light scattering detector. A peak in a chromatogram obtained from the compound-quantitating device is identified as the compound of interest by cross-correlation, via elution time, with chromatographic results obtained from the compound-identifying device. Once the peak is identified as corresponding to the compound of interest, the corresponding peak area is used for quantitation and purity determination.
Abstract:
A device comprising means for engaging said device to at least a portion of an outside surface of a glass of a headwear, means for engaging said device to at least a portion of an inside surface of glass of said headwear, means for mounting a display module or video capturing device and said means for engaging said device to at least a portion of an inside surface of a headwear to said device, and means for adjusting a viewing angle of said display module or video capturing device with a generally 360 degrees rotation.
Abstract:
The present invention discloses a timing controller and a liquid crystal display comprising the same, wherein, the timing controller comprises a data converting module (10) for converting inputted serial video stream data into parallel video stream data, and a memory (30) for storing the parallel video stream data, and also comprises an output module (50) connected with the memory (30) for generating a predetermined clock signal and outputting the parallel video stream data under the control of the predetermined clock signal. With the technical solution of the present invention, the problem in the prior art is solved that the rate of the outputted video stream data is affected by the input. In addition, as the outputted video stream data is controlled by the clock signal it generates, this solves the problem of long locking duration of the timing controller in the prior art.
Abstract:
The present invention pertains to a microencapsulated fire retardant and the uses thereof. The inventive micro-encapsulated fire retardant comprises a core containing a fire retardant and a shell of a natural microtubule, wherein the core is encapsulated by the shell. The microencapsulated fire retardant of the present invention can be composited into a certain polymeric substrate by a mixing method so as to form into a corresponding, fire-retardant polymeric composite material.
Abstract:
The present invention relates to a solid base catalyst including 10.0%-30.0% by weight of calcium oxide and 70.0%-90.0% by weight of zirconium oxide, in which the calcium source is CaCl2 or Ca(NO3)2, and the Zirconium source is ZrOCl2 or ZrO(NO3)2. The invention also provides a process for the preparation of the catalyst and a use of the catalyst in synthesizing dimethyl carbonate via heterogeneous catalysis. The catalyst shows good catalytic stability and catalytic activity, and can be separated from products easily and is reusable.
Abstract:
A catalyst for the preparation of dimethyl carbonate from urea and methanol having a composition on weight base of: active component of from 20 to 50 wt %, and carrier of from 80 to 50 wt %, and prepared by equal-volume spraying and impregnating method is disclosed. The method for the synthesis of dimethyl carbonate can be carried out in a catalytic rectification reactor, said method comprising: (1) dissolving urea in methanol to form a methanol solution of urea; and (2) feeding the methanol solution of urea and methanol counter-currently into the reaction zone, wherein the reaction is carried out at conditions including reaction temperature of from 120° C. to 250° C., reaction pressure of from 0.1 MPa to 5 MPa, kettle bottom temperature of from 70° C. to 210° C., stripping section temperature of from 70° C. to 250° C., rectifying section temperature of from 70° C. to 280° C., and reflux ratio of from 1:1 to 20:1. The preparation of the catalyst according to the present invention is simple and has good repeatability, and the catalyst could further enhance the yield of DMC as well as conversion of urea in the catalytic rectification reactor.