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    • 106. 发明公开
    • A silica-surfactant nanocomposite and its production process
    • 一种二氧化硅 - 表面活性剂纳米复合材料及其生产方法
    • EP0739856A3
    • 1996-11-27
    • EP96250091.4
    • 1996-04-24
    • THE INSTITUTE OF PHYSICAL & CHEMICAL RESEARCH
    • Ogawa, MakotoSasabe, Hiroyuki
    • C01B37/02B01J20/10
    • C01B37/02B01J20/103
    • A periodic silica-surfactant nanocomposite, of which crystal structure belongs to hexagonal system, has aggregated cylindrical micelle rods formed by surfactant surrounded by silica layers is provided. A periodic silica porous material has channels sized in 1-2 nm, with equal to or more than 1,000 m 2 /g as BET surface area is also provided by calcining the nanocomposite. A production process of the nanocomposites is further provided, and the process comprising steps of hydrolyzing tetraalkoxysilane under acidic condition to obtain hydrolysates, mixing surfactants and the hydrolysates obtained, coating the mixed solution on the substrate, and drying the coated solution. Such nanocomposites are obtained conveniently, and they may be formed as transparent film or gel-like lumps. Since the silica porous material has high specific surface area, it is available for optical functional materials, and so forth.
    • 提供了一种周期性的二氧化硅 - 表面活性剂纳米复合材料,其晶体结构属于六方晶系,具有由二氧化硅层包围的表面活性剂形成的聚集的圆柱形胶束棒。 周期性二氧化硅多孔材料具有尺寸为1-2nm,等于或大于1,000m 2 / g的通道,因为通过煅烧纳米复合材料也提供BET表面积。 进一步提供纳米复合材料的生产方法,该方法包括在酸性条件下水解四烷氧基硅烷以获得水解产物,混合表面活性剂和所获得的水解产物,将混合溶液涂覆在基材上并干燥涂覆溶液的步骤。 这样的纳米复合材料可以方便地获得,并且它们可以形成为透明膜或凝胶状块。 由于二氧化硅多孔材料具有高比表面积,因此可用于光学功能材料等。
    • 108. 发明公开
    • Magnetoencephalograph
    • 磁波
    • EP0541310A2
    • 1993-05-12
    • EP92309992.3
    • 1992-10-30
    • MITSUI MINING & SMELTING CO., LTD.THE INSTITUTE OF PHYSICAL & CHEMICAL RESEARCH
    • Ohta, HiroshiHoshino, Kazutomo,
    • G01R33/035A61B5/00H05K9/00
    • A61B5/04008G01R33/035
    • A magnetoencephalograph comprising an oxide superconductor magnetic shield (3) and a cryostat (4) for cooling the magnetic shield vessel, a multichannel SQUID (1) and a cryostat (2) for cooling the SQUID inserted together in the magnetic shield vessel from one end of the magnetic shield vessel, a magnetic-field detection unit (5) situated in the vessel for detecting magnetic fields, and a coupling portion (6) for coupling the SQUID and the magnetic-field detection unit with respect to the signals, and the SQUID and the magnetic-field detection unit being detachable.
      The magnetoencephalograph makes possible detection of the very weak magnetic fields from the human brain and therewith reduction of the diameter of the opening of the magnetic shield vessel for inserting the SQUID. The reduction of the diameter of the SQUID opening in turn makes it possible to reduce the length of the magnetic shield vessel preserving a high shielding effect of the magnetic shield vessel because of the relationship L/D. The magnetic shield vessel is thus reduced to a practical size easy to handle and fabricatable at a low cost.
    • 一种脑磁图仪,包括用于冷却磁屏蔽容器的氧化物超导体磁屏蔽(3)和低温恒温器(4),多通道SQUID(1)和低温恒温器(2),用于冷却从一端插入磁屏蔽容器中的SQUID ,位于容器内用于检测磁场的磁场检测单元(5)以及用于将SQUID和磁场检测单元相对于信号进行耦合的耦合部分(6),以及 SQUID和磁场检测单元是可拆卸的。 脑磁图仪使得能够检测来自人脑的非常微弱的磁场,并且因此用于插入SQUID的磁屏蔽容器的开口的直径减小。 由于L / D的关系,SQUID开口的直径的减小又使得可以减小保护磁屏蔽容器的高屏蔽效果的磁屏蔽容器的长度。 磁屏蔽容器因此被减小到易于处理和以低成本制造的实际尺寸。