摘要:
A single stranded nucleic acid probe having a base sequence complementary to the gene to be detected is immobilized onto the surface of an electrode or the tip of an optical fiber, and the nucleic probe is reacted with the gene sample denatured to a single stranded form, and then the nucleic acid probe hybridized with the gene is detected. In this procedure, to the reaction system consisting of the nucleic acid probe and the gene sample, a double stranded nucleic acid recognizing substance capable of binding specifically to the double stranded nucleic acid and being active electrochemically or optically is added. The detection of the nucleic acid probe is conducted by electrochemical or optical determination utilizing the electrode or optical fiber mentioned above. By this method, safer and more convenient detection of the gene is possible at a higher sensitivity even in a reduced time period.
摘要:
A method for manufacturing a magnetic head includes the process by which a curved sliding surface of a head chip for making contact with a recording medium and a penetrating window of a side surface of the head chip for determining a gap depth are formed by machining the head chip using a laser beam. The method includes placing the head chip on a working stage; placing a first mask in a light path of a laser beam from a laser source toward the side surface, the first mask being provided with a first slit for the purpose of forming the curved sliding surface of the head chip and a second slit for the purpose of forming the penetrating window of the side surface of the head chip; and irradiating the side surface through the first and second slits with the laser beam, thereby forming the curved sliding surface and the penetrating window in the head chip. The method also may include forming track grooves by irradiating the sliding surface of the head chip with the laser beam.
摘要:
A process for producing porous films which comprises melting a resin composition consisting essentially of (1) 100 parts by weight of a high-pressure-processed low-density polyethylene resin having a melt index of 0.5 to 7 and a density of 0.915 to 0.935, a linear low-density polyethylene resin having a melt index of 0.5 to 8.5 and a density of 0.915 to 0.935, or a mixture thereof and (2) 50 to 500 parts by weight of barium sulfate having an average particle diameter of 0.1 to 7 .mu.m; forming the molten resin composition into a film; and then stretching the film at least uniaxially by a factor of 1.5 to 7. As the linear low-density polyethylene resin, a copolymer of ethylene and hexene and/or octene is particularly preferred.
摘要翻译:一种多孔膜的制造方法,其特征在于,使树脂组合物熔融,所述树脂组合物主要由(1)100重量份熔融指数为0.5〜7,密度为0.915〜0.935的高压处理低密度聚乙烯树脂组成, 熔融指数为0.5〜8.5,密度为0.915〜0.935的线性低密度聚乙烯树脂,或其混合物,(2)50〜500重量份的平均粒径为0.1〜7μm的硫酸钡 m; 将所述熔融树脂组合物形成膜; 然后将膜至少单轴拉伸1.5至7倍。作为线性低密度聚乙烯树脂,特别优选乙烯和己烯和/或辛烯的共聚物。