Abstract: To provide a process for producing a reliable substrate in good yield, by suppressing bleeding of boric acid from a green sheet comprising a powder of borosilicate glass to improve printability of a conductive pattern thereby to prevent disconnection. A process for producing a substrate which comprises firing a green sheet comprising a powder of borosilicate glass, wherein the powder is one prepared by holding borosilicate glass before pulverization, at a temperature higher by at least 30° C. than the glass transition temperature and lower by at most 50° C. than the softening point of the borosilicate glass for at least 3 hours in the atmosphere, followed by pulverization.

Abstract: Disclosed is an ultraviolet absorbing glass for fluorescent lamps which is composed of a borosilicate glass containing, in mass %, 60 to 80% of SiO2, 1 to 7% of Al2O3, 10 to 25% of B2O3, 3 to 15% of Li2O+Na2O+K2O, 0 to 5% of CaO+MgO+BaO+SrO+ZnO, 0.001 to 0.05% of Fe2O3, 0.1 to 5% of CeO2, 0.01 to 5% of SnO+SnO2 and 0.01 to 5% of ZrO2+ZnO+Nb2O5, and having an average linear expansion coefficient in a range of 36 to 57×10?7/° C. at 0 to 300° C. defined in JIS R 3102.

Abstract: Disclosed is an ultraviolet absorbing glass for fluorescent lamps which is composed of a borosilicate glass containing, in mass %, 60 to 80% of SiO2, 1 to 7% of Al2O3, 10 to 25% of B2O3, 3 to 15% of Li2O+Na2O+K2O, 0 to 5% of CaO+MgO+BaO+SrO+ZnO, 0.001 to 0.05% of Fe2O3, 0.1 to 5% of CeO2, 0.01 to 5% of SnO+SnO2 and 0.01 to 5% of ZrO2+ZnO+Nb2O5, and having an average linear expansion coefficient in a range of 36 to 57×10?7/° C. at 0 to 300° C. defined in JIS R 3102.

Abstract: A hexagonal ferrite magnetic powder having an average tabular diameter of from 15 to 28 nm, a coercive force (Hc) of from 2,000 to 5,000 Oe (from 160 to 400 kA/m), a switching field distribution (SFD) of from 0.3 to 0.7 and a D70/D50 of from 1.05 to 1.25. This magnetic powder can be obtained by melting and quenching starting materials to obtain an amorphous product, and thermally treating the product, which comprises increasing a temperature at a rate of 300 to 500° C./hr in a temperature range of 550 to 600° C. in the thermal treatment before the temperature reaches the thermally treating temperature.

Abstract: A low melting glass, which contains substantially no lead and contains 70-90% of Bi2O3, 1-20% of ZnO, 2-12% of B2O3, 0.1-5% of Al2O3, 0.1-5% of CeO2, 0-5% of CuO, 0-0.2% of Fe2O3 and 0.05-5% of CuO+Fe2O3 in mass %, wherein a content of alkali metal oxides in the glass composition is less than 0.1%, and the glass does not crystallize by pre-baking at a sealing temperature or more, can be used for sealing later, and can suppress deterioration of a material such as platinum or platinum-rhodium to provide a stable melting operation for a long period.

Abstract: To provide a process for producing a reliable substrate in good yield, by suppressing bleeding of boric acid from a green sheet comprising a powder of borosilicate glass to improve printability of a conductive pattern thereby to prevent disconnection. A process for producing a substrate which comprises firing a green sheet comprising a powder of borosilicate glass, wherein the powder is one prepared by holding borosilicate glass before pulverization, at a temperature higher by at least 30° C. than the glass transition temperature and lower by at most 50° C. than the softening point of the borosilicate glass for at least 3 hours in the atmosphere, followed by pulverization.

Abstract: A hexagonal ferrite magnetic powder having an average tabular diameter of from 15 to 30 nm, a coercive force (Hc) of from 2,000 to 5,000 Oe (from 160 to 400 kA/m) and a saturated magnetization (?s) of equal to or more than the average tabular diameter (nm)×0.37+45 A·m2/kg. This magnetic powder is obtained by melting a starting material containing a material which has a composition within the hatched region (1) in the triangular phase diagram shown in FIG. 1 and quenching the molten product to obtain an amorphous product, subjecting the amorphous product to a thermal treatment, acid treatment, and washing. Also, a magnetic recording medium is obtained by adding this magnetic powder to the magnetic layer and coating it on the support.

Abstract: A low melting glass, which contains substantially no lead and contains 70-90% of Bi2O3, 1-20% of ZnO, 2-12% of B2O3, 0.1-5% of Al2O3, 0.1-5% of CeO2, 0-5% of CuO, 0-0.2% of Fe2O3and 0.05-5% of CuO+Fe2O3 in mass %, wherein a content of alkali metal oxides in the glass composition is less than 0.1%, and the glass does not crystallize by pre-baking at a sealing temperature or more, can be used for sealing later, and can suppress deterioration of a material such as platinum or platinum-rhodium to provide a stable melting operation for a long period.

Abstract: To excite a fluorescence glass element to which radiation is applied with ultraviolet rays and to read a dose by a fluorescence intensity generated from a fluorescence detection surface of the fluorescence glass element, a method comprises a fluorescence intensity measurement step of using a two-dimensional camera as a detection unit which detects the fluorescence intensity from the fluorescence glass element and measuring the fluorescence intensity for each pixel division comprising one or a plurality of pixels set beforehand, a step of converting the fluorescence intensity measured for each pixel division into the dose, and a step of outputting the dose of each pixel division and a dose distribution.

Abstract: For example, the reflector according to the present invention is a reflector made of glass for a projector which is composed of amorphous glass whose thermal expansion coefficient is 30 to 45×10?7/° C. and includes a reflective surface for reflecting light emitted from a light source and an opening for inserting a light source bulb or a conductor to the light source bulb, in which the opening is smoothed by heat-treating the surface thereof after opening-drilling, thus mechanical damage is removed from the processed part.

Abstract: For example, the reflector according to the present invention is a reflector made of glass for a projector which is composed of amorphous glass whose thermal expansion coefficient is 30 to 45×10?7/° C. and includes a reflective surface for reflecting light emitted from a light source and an opening for inserting a light source bulb or a conductor to the light source bulb, in which the opening is smoothed by heat-treating the surface thereof after opening-drilling, thus mechanical damage is removed from the processed part.

Abstract: A cryopreservation medium and a cryopreservation method which make it possible to cryopreserve ES cells from primates simply with high viability are provided. A cryopreservation medium containing a cryoprotectant at a Concentration of from 12% (W/V) to 50% (W/V) and a cryopreservation method for primate embryonic stem cells, which comprises a step of suspending primate embryonic stem cells in the cryopreservation medium, and a refrigeration step of freezing the suspension of the primate embryonic stem cells in the cryopreservation medium by cooling it to ?80° C. or below at a rate of from 0.5° C. to 10° C. per minute, and a preservation step of storing the frozen suspension of primate embryonic stem cells in the cryopreservation medium enable simple cryopreservation of primate embryonic stem cells with high viability.

Abstract: For example, the reflector according to the present invention is a reflector made of glass for a projector which is composed of amorphous glass whose thermal expansion coefficient is 30 to 45×10−7/° C. and includes a reflective surface for reflecting light emitted from a light source and an opening for inserting a light source bulb or a conductor to the light source bulb, in which the opening is smoothed by heat-treating the surface thereof after opening-drilling, thus mechanical damage is removed from the processed part.

Abstract: A dose reading device comprises: an ultraviolet irradiating section 40 for irradiating an ultraviolet laser beam forming an excitation light source for fluorescent glass elements X; a fluorescence detecting section 50 for detecting a radiation exposure dose from the intensity of fluorescence generated by a fluorescent glass element X; a magazine conveying section 30 for conveying a magazine 10 capable of accommodating a plurality of fluorescent glass elements X to a position for measurement by the fluorescence detecting section 50; a dark box for accommodating the magazine conveying section 30 and the fluorescence detecting section 50; a first shielding plate 31c set at a non-perpendicular angle to the light axis of the ultraviolet laser beam having passed through the fluorescent glass element X; a second shielding plate 31e for shielding fluorescence from the fluorescent glass elements X other than the fluorescent glass element X under measurement; and first and second slit plates 41a, 42a for transmitting o

Abstract: A cylindrical silver-activated phosphate glass base material 2 is placed inside a heater 1. The upper end of this base material 2 is set in a supporting section 3, and an extending section 4 provided in vertically movable fashion by means of a drive device is attached to the lower end thereof. As the base material 2 is softened by the heating of the heater 1, and the extending section 4 is lowered by operating the drive device, the base material 2 is extended and assumes a thin bar shape. The extension rate of the extending section 4 driven by the drive device is controlled by an external diameter control section 5, while detecting the external diameter, in such a manner that the external diameter of the extended portion is uniform. The extended portion 6 of the base material 2 is cut to uniform lengths, and the cut faces thereof are polished by a polishing device, thereby yielding a cylindrical dosimeter glass element 7a.

Abstract: A glass for anodic bonding, which is a glass to be anodically bonded to a silicon crystal substrate and which contains substantially no Na2O and contains from 4 to 8 mol % of Li2O.

Abstract: A heating vessel for concentration is formed in an elongated one, and a baffle plate is arranged to increase sulfuric acid liquid concentration at an outlet to a high level. The heating vessel for concentration and a heating vessel for distillation are installed so that the respective heating vessels have substantially the same waste sulfuric acid liquid level therein, forming continuous flow of the sulfuric acid liquid without presence of a valve or an intermediate tank in a connecting pipe. The heating vessel for distillation is formed in an elongated one with a baffle plate arranged therein to increase the impurity concentration included in concentrated sulfuric acid liquid at an outlet to a high level.

Abstract: An aluminum nitride sintered product which is made mainly of aluminum nitride and contains an yttrium compound in an amount of from 0.6 to 5 wt % as calculated as yttrium oxide, a vanadium compound in an amount of from 0.02 to 0.4 wt % as calculated as vanadium and carbon in an amount of from 0.03 to 0.10 wt % and which has a three-point bending strength of at least 45 kg/mm and a thermal conductivity of at least 150 W/m·K, wherein crystal grains of aluminum nitride have an average grain size of at most 5 &mgr;m.