Abstract: An apparatus for automated preparation of DNA samples which comprises a reactor for preparing DNA samples and adjacent thereto an enzyme supply section, a plate holding section, a nozzle sealing section and a cleaning tank section, and wherein plates are loaded onto or unloaded from said plate holding section by means of a transport robot.

Abstract: An apparatus for automated preparation of DNA samples which comprises a reactor for preparing DNA samples and adjacent thereto an enzyme supply section, a plate holding section, a nozzle sealing section and a cleaning tank section, and wherein plates are loaded onto or unloaded from said plate holding section by means of a transport robot.

Abstract: A magneto-optical disk has a recording film on a substrate for defining a data area. The data area is divided into a plurality of zones in the radial direction, and each zone has a plurality of physical tracks divided into a plurality of sectors along the tracks. Number of sectors per physical track in each zone is increased as viewed toward the outer edge of the disk one by one. The shortest mark length in specified zones in the vicinity of the inner and outer edges of the disk is longer than that in other zones to thereby improve reliability in recording/reproducing characteristics in the specified zones, which have otherwise degraded recording/reproducing characteristics due to inferior physical characteristics of the recording film.

Abstract: An optical tape comprising a substrate having a center line average roughness (Ra.sup.A) on one side of 0.005 to 0.5 .mu.m and a tensile strength (F.sub.5) in the longitudinal direction of not less than 8 kg/mm.sup.2, and an optical recording layer formed on the other side of said substrate.

Abstract: Disclosed herein are an optical recording method of conducting recording/reading out for information by irradiating a laser beam at a wavelength of not more than 500 nm onto a recording layer of an optical disc having a track pitch of not less than 0.4 .mu.m and less than 0.9 .mu.m, the laser beam being incident from a disc substrate side of the optical disc using an objective lens having numerical aperture of 0.55 to 0.70, a recording area for information recording on the disc substrate being a flat area not having a guide groove for each track, and the disc substrate having a in-plane birefringence of not more than 20.times.10.sup.-6 and a vertical birefringence of not more than 300.times.10.sup.-6, and an optical recording medium suitable for use in the optical recording method.

Abstract: Disclosed herein is an optical tape comprising: a substrate whose a center-line average roughness (Ra.sup.B) on the surface of one side is not more than 0.005 .mu.m and the number of coarse protuberances having a height of not less than 0.10 .mu.m in the surface of that side is not more than 10 protuberances/cm.sup.2, and an optical recording layer formed on the surface whose the Ra.sup.B is not more than 0.005 .mu.m.

Abstract: A metal-containing indoaniline compound having the formula: ##STR1## wherein M is a metal atom of Group VIII, Ib, IIb, IIIb, IVa, Va, VIa or VIIa of the Periodic Table or its halide or oxide, rings A, B, C, D, E and F may have substituents, each of K.sup.1 K.sup.2 and K.sup.3 is a residue of a substituted or unsubstituted aromatic amine, each of l, m and n is 0 or 1, provided l+m+n=2 or 3, and p is 2, 3 or 4.

Abstract: A sulfide phosphor emitting green to orange light with long after-glow is represented by the formula of (ZN.sub.1-x,Cd.sub.x)S:eM.sup.I',fM.sup.III', gX' wherein M.sup.I' is at least one of copper and gold, M.sup.III' is at least one of gallium and indium, X' is at least one of chlorine, bromine, iodine, fluorine and aluminum, and x, e, f and g satisfy the conditions of 0.ltoreq.x.ltoreq.0.4, 10.sup.-8 .ltoreq.e.ltoreq.10.sup.-2, 5.times.10 .sup.-8 .ltoreq.f.ltoreq.5.times.10.sup.-3, and 5.times.10.sup.-8 .ltoreq.g.ltoreq.5.times.10.sup.-3. A white emitting phosphor is obtained by mixing the long after-glow yellow emitting phosphor represented by the above formula wherein 0.ltoreq.x.ltoreq.0.3 and 10.sup.-6 .ltoreq.e.ltoreq.10.sup.-2, with a long after-glow blue emitting phosphor. These sulfide phosphors are used to form fluorescent screens of electron excited fluorescent display devices.

Abstract: Disclosed herein is an optical recording medium for recording informations by irradiating the optical recording medium with a laser beam to form a hole or a deformed part thereon, said optical recording medium comprising a substrate and a recording layer containing at least Te, Se and F in the amounts of from 35 to 94.9 atomic % of Te, from 5 to 25 atomic % of Se and from 0.1 to 40 atomic % of F, produced by a reactive sputtering, said Se being derived from selenium fluoride and a sputtering target of Te or a sputtering target comprising Te-Se-alloy, and a process for producing the same.

Abstract: A monochrome display cathode ray tube which comprises a white emitting fluorescent screen formed on a face plate facing an electron gun to emit cathode rays, said white emitting fluorescent screen being composed essentially of a phosphor mixture comprising from 40 to 70% by weight of a long after-glow red emitting europium-activated indium borate phosphor, from 10 to 40% by weight of a long after-glow green emitting manganese-activated zinc silicate phosphor and from 10 to 50% by weight of a long after-glow blue emitting silver-activated zinc sulfide phosphor.