Abstract:
Provided is a color center laser medium that is a wide-spectrum laser medium with a laser oscillation wavelength band that ranges from a near-ultraviolet region, with a shorter wavelength than that of a conventional laser medium utilizing color centers, to the visible region, and that is capable of operating at room temperature without requiring a laser cavity and liquid nitrogen cooling. The color center-containing magnesium oxide is created by means of a solid-phase reaction between silicon monoxide (SiO), boron trioxide (B2O3), or ferric oxide (Fe2O3) and metallic magnesium. The wavelength-variable laser medium then utilizes color centers (color center) in the magnesium oxide created by the solid-phase reaction. More specifically, silicon monoxide and metallic magnesium are heated for several hours in an argon atmosphere at a prescribed temperature in order to obtain a magnesium oxide sublimate. Laser oscillation occurs by the sublimate being directly irradiated with an excitation pulsed laser beam using a pump energy higher than a prescribed energy that is the laser oscillation threshold value.
Abstract:
A luminescent element of next-generation optical device that by photoluminescence (PL), exhibits a large half-value width of emission spectrum in the wavelength region of visible light so as to realize broad light emitting characteristics and enables white light emission. Silica glass is produced through a firing operation for firing a product of pressure molding of silica microparticles such as fumed silica, wherein the firing temperature is regulated within a range not exceeding 1000°C so as to satisfactorily carry out dehydration condensation reaction with respect to OH groups of silica microparticles to thereby attain clearing and wherein amorphous defects having occurred during the reaction are retained without being reduced. This silica glass is used as a phosphor.
Abstract:
A process for electroslag welding permitting utilization of a gap width of from 3 to 8 mm between members (16, 18) to be welded, in which there is used a sheet electrode (28) having a width of the order of the width of the members (16, 18) at the gap; the electrode (28) having a central layer (33) of metal and, on each of the major surfaces of the metal layer (33), a layer (34) of slag forming flux.
Abstract:
A memory wherein the bit reliability of the memory cells can be dynamically varied depending on the application or the memory status, the operation stability is ensured, and thereby a low power consumption and a high reliability are realized. Either a mode (a 1-bit/1-cell mode) in which one bit is composed of one memory cell or a mode (a 1-bit/n-cell mode) in which one bit is composed of n (n is two or more) connected memory cells is dynamically selected. When the 1-bit/n-cell mode is selected, the read/write stability of one bit is enhanced, the cell current during read is increased (read is speeded up), and a bit error, if occurs, is self-corrected. Especially, a pair of CMOS transistors and a control line for performing control so as to permit the CMOS transistors to conduct are added between the data holding nodes of n adjacent memory cells. With this, the word line (WL) is controlled, and thereby the operation stability is further improved.
Abstract:
It is intended to provide a method of anticipating the response to a ß-blocker drug based on a gene polymorphism of a subject. A large number of genes seemingly relating to heart functions or ß 1 -receptor functions are extracted and the correlations between individual polymorphisms occurring in these genes and responses to ß-blocker drugs are comprehensively analyzed. As a result, a plural number of gene polymorphisms useful in anticipating the responses to ß-blocker drugs are found out. Moreover, it is clarified that the responses to ß-blocker drugs can be anticipated at a high accuracy by using these gene polymorphisms. The technique as described above is useful in treating heart failure with the use of ß-blocker drugs, examinations and diagnosis in the ß-blocker drug therapy for improving other heart functions and so on.
Abstract:
A process of incorporating non-polymeric particulate matter such as magnetic materials, pigments and minerals, into a cross-linked styrene-base polymeric matrix, which process comprises dispersing the non-polymeric particles with a polymeric dispersant in a medium containing one or more vinyl monomers and a crosslinking agent, and adding a polymerization initiator. Typical polymeric dispersants are copolymers, styrenes and tertiary-nitrogen-containing vinyl monomers. Non-polymeric particulate matter incorporated into polymeric beads by this process is resistant to chemical attack and the beads may be used to prepare composite adsorbents or ion exchange resins.
Abstract:
Disclosed is a cell which enables the reproduction of a cartilage tissue and has a proliferative ability. Also disclosed is a technique for providing a cell supply source which can be used in a definitive treatment of osteochondrosis deformans. A chondrocyte-like cell which has the same properties as those of a chondrocyte and can proliferate can be produced by selecting a combination of an Myc family gene and/or a Klf family gene and a SOX9 gene and introducing the combination into a somatic cell. The chondrocyte-like cell can be used for a medical purpose of cartilage regeneration.