会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 107. 发明申请
    • Method for measuring work function
    • 功能测量方法
    • US20080012587A1
    • 2008-01-17
    • US11640056
    • 2006-12-14
    • Wei WeiKai-Li JiangShou-Shan Fan
    • Wei WeiKai-Li JiangShou-Shan Fan
    • G01R31/26
    • G01N27/005
    • A method for measuring work function includes the steps of: (a) providing a field emission electron source having a carbon nanotube tip as a cathode electrode and a spaced anode electrode, having a predetermined spaced distance therebetween; (b) applying a voltage between the cathode electrode and the anode electrode and measuring a first current-voltage curve of the field emission electron source in a vacuum environment; (c) forming a layer of field emission material at least on the surface of the carbon nanotube tip; (d) measuring a second current-voltage curve of the now-treated field emission electron source in the same conditions as that in the step (b); (e) achieving two Fowler-Nordheim curves calculated from the two current-voltage curves according to the Fowler-Nordheim equation; and (f) comparing the two Fowler-Nordheim curves and calculating the work function of the field emission material therefrom.
    • 一种用于测量功函数的方法包括以下步骤:(a)提供具有碳纳米管尖端作为阴极和间隔开的阳极的场致发射电子源,它们之间具有预定的间隔距离; (b)在阴极电极和阳极电极之间施加电压,并在真空环境中测量场发射电子源的第一电流 - 电压曲线; (c)至少在所述碳纳米管尖端的表面上形成场致发射材料层; (d)在与步骤(b)相同的条件下测量现在处理的场发射电子源的第二电流 - 电压曲线; (e)根据Fowler-Nordheim方程,从两个电流 - 电压曲线计算出两个Fowler-Nordheim曲线; 和(f)比较两条福勒 - 诺德海姆曲线,并计算其中的场致发射材料的功函数。
    • 109. 发明申请
    • Catalyst for the synthesis of dimethyl carbonate from urea and methanol, preparation and use thereof
    • 用于从尿素和甲醇合成碳酸二甲酯的催化剂,其制备和用途
    • US20060047136A1
    • 2006-03-02
    • US11209052
    • 2005-08-22
    • Yuhan SunWei WeiNing ZhaoBaoyuan SunBingsheng ZhangYanjun Chen
    • Yuhan SunWei WeiNing ZhaoBaoyuan SunBingsheng ZhangYanjun Chen
    • C07C69/96
    • B01J23/14B01J23/02B01J23/06B01J23/10B01J23/34C07C68/00Y02P20/127C07C69/96
    • 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.
    • 用于由尿素和甲醇制备碳酸二甲酯的催化剂,其重量基础为:活性组分为20至50重量%,载体为80至50重量%,并通过等体积喷涂和浸渍法制备 被披露。 合成碳酸二甲酯的方法可以在催化精馏反应器中进行,所述方法包括:(1)将脲溶于甲醇中形成尿素甲醇溶液; 和(2)将尿素和甲醇的甲醇溶液反向进料到反应区中,其中反应在包括反应温度为120℃至250℃的条件下进行,反应压力为0.1MPa至 5MPa,釜底温度为70℃至210℃,汽提段温度为70℃至250℃,精馏段温度为70℃至280℃,回流 比例为1:1至20:1。 根据本发明的催化剂的制备是简单的并且具有良好的重复性,并且催化剂可以进一步提高DMC的收率以及催化精馏反应器中尿素的转化率。
    • 110. 发明授权
    • Method for controlling the temperature of a refrigerator
    • 控制冰箱温度的方法
    • US06526770B1
    • 2003-03-04
    • US09661100
    • 2000-09-13
    • Haibei TangBaozhong LiZhiping LiWei Wei
    • Haibei TangBaozhong LiZhiping LiWei Wei
    • F25B4902
    • F25D29/00F25B2600/0251F25D2400/30F25D2700/14
    • The present invention relates to temperature control for refrigerators, which automatically adjusts the on-temp/off-temp values in view of the fluctuation of the ambient temperature. The present invention also relates to a refrigerator on which a sensor of simplified circuit design is reasonably allocated. In accordance with the present invention, ambient temperature is divided into a plurality of particular temperature divisions, the on-temp and off-temp values preferred for refrigerator operation in each corresponding temperature division are determined by experiments. By means of a temperature sensor, on-temp/off-temp values appropriately corresponding to a particular temperature division are applied to keep the temperature of the refrigerator at a required level.
    • 本发明涉及一种冰箱的温度控制装置,其根据环境温度的波动自动调节温度/临界值。 本发明还涉及一种冰箱,其上合理分配简化电路设计的传感器。 根据本发明,环境温度被分成多个特定的温度分段,通过实验确定在每个对应的温度分区中对于冰箱操作而言优选的温度和过温度值。 通过温度传感器,施加适当对应于特定温度分度的温度/临界值以将冰箱的温度保持在所需水平。