Abstract: The present invention provides a getter material configured by a pressed powder mixture comprising Ba—Al alloy powder and Ni powder, wherein when the pressed powder mixture is heated in a vacuum atmosphere or an inert gas atmosphere, a temperature at which an exothermic reaction starts is ranging from 750° C. to 900° C. According to this getter material, since the temperature at which the pressed powder mixture starts the exothermic reaction is set within a range from 750° C. to 900° C., there can be provided a getter material and an evaporation type getter device capable of suitably controlling an evaporation amount of getter components under a stable condition, and is excellent in responsiveness because a time ranging from a starting time of heating the getter material to a starting time of evaporation of the getter components can be shortened.

Abstract: The present invention provides a getter material configured by a pressed powder mixture comprising Ba—Al alloy powder and Ni powder, wherein when the pressed powder mixture is heated in a vacuum atmosphere or an inert gas atmosphere, a temperature at which an exothermic reaction starts is ranging from 750° C. to 900° C. According to this getter material, since the temperature at which the pressed powder mixture starts the exothermic reaction is set within a range from 750° C. to 900° C., there can be provided a getter material and an evaporation type getter device capable of suitably controlling an evaporation amount of getter components under a stable condition, and is excellent in responsiveness because a time ranging from a starting time of heating the getter material to a starting time of evaporation of the getter components can be shortened.

Abstract: Problem is to provide a ceramic-metal composite and a semiconductor device that exhibits high bonding strength, heat cycle resistance, durability, and reliability even if the ceramic-metal composite is used in a power module. A ceramic-metal composite includes a ceramic substrate, an active metal brazing alloy layer, and a metal plate bonded to the ceramic substrate through the active metal brazing alloy layer disposed therebetween. The active metal brazing alloy layer contains a transition metal.

Abstract: An electronic component module 1 has a circuit board 2 in which metal plates 5 and 7 are bonded to both surfaces of a ceramic substrate 3, and an electronic component 9 that is bonded to at least one surface of the metal plate 5 and is operable at least 125° C. The electronic component 9 is bonded to the metal plate 5 via a brazing material layer 8 having a higher melting point than a operating temperature of the electronic component 9.

Abstract: In a ceramic circuit board 1 prepared by integrally joining a circuit layer 4 composed of a clad member including a circuit plate 2 made of an Al plate and an Al—Si brazing material layer 3 to a ceramic substrate 6, a surface of the clad member adjacent to the Al—Si brazing material layer 3 is joined to the ceramic substrate 6 with an Al alloy film 5 therebetween, the Al alloy film 5 having a thickness of less than 1 ?m and being provided on the surface of the ceramic substrate 6. According to this structure, a ceramic circuit board in which the generation of voids in the joint interface can be effectively suppressed, the joint strength of the metal member serving as the circuit layer can be increased, and the heat resistance cycle characteristics can be drastically improved, and a method for producing the same can be provided.

Abstract: The present invention provides a getter material configured by a pressed powder mixture comprising Ba—Al alloy powder and Ni powder, wherein when the pressed powder mixture is heated in a vacuum atmosphere or an inert gas atmosphere, a temperature at which an exothermic reaction starts is ranging from 750° C. to 900° C. According to this getter material, since the temperature at which the pressed powder mixture starts the exothermic reaction is set within a range from 750° C. to 900° C., there can be provided a getter material and an evaporation type getter device capable of suitably controlling an evaporation amount of getter components under a stable condition, and is excellent in responsiveness because a time ranging from a starting time of heating the getter material to a starting time of evaporation of the getter components can be shortened.

Abstract: In a ceramic circuit board 1 prepared by integrally joining a circuit layer 4 composed of a dad member including a circuit plate 2 made of an Al plate and an Al—Si brazing material layer 3 to a ceramic substrate 6, a surface of the clad member adjacent to the Al—Si brazing material layer 3 is joined to the ceramic substrate 6 with an Al alloy film 5 therebetween, the Al alloy film 5 having a thickness of less than 1 ?m and being provided on the surface of the ceramic substrate 6. According to this structure, a ceramic circuit board in which the generation of voids in the joint interface can be effectively suppressed, the joint strength of the metal member serving as the circuit layer can be increased, and the heat resistance cycle characteristics can be drastically improved, and a method for producing the same can be provided.

Abstract: A constant-current polarization voltage detecting method includes step of feeding to a detecting electrode a predetermined minute current in a pulse form, and detecting sequentially a polarization voltage at each time of feeding the pulsating current, in an electrochemical analysis in solution. The polarization voltage is detected after a lapse of a predetermined time from the initiation of feeding the pulsating current at each time. A Karl Fischer's moisture content analyzing apparatus can utilize such a method.

Abstract: An optical disc having an aluminum reflective film is disclosed, wherein an oxide of Al in the stable oxidized state is introduced into the Al reflective film to eliminate changes with lapse of time to improve durability of the optical disc. A method for producing a reflective film on an optical disc is also disclosed, wherein a trace amount of oxygen is introduced into atmosphere in the course of formation of the reflective film.

Abstract: An electrolytic solution for Karl Fischer coulometric titration is disclosed which consists mainly of an amine, sulfur dioxide, iodide ions, and a solvent which is a mixed solvent comprising (a) propylene carbonate and (b) a dialkylene glycol monoalkyl ether (wherein the alkylene groups and the alkyl group each have from 1 to 4 carbon atoms). The electrolytic solution, which is based on a less toxic solvent, has fewer side reactions with ketones and is useful in accurately determining the water content of ketones.

Abstract: An optical disc having an aluminum reflective film is disclosed, wherein an oxide of Al in the stable oxidized state is introduced into the Al reflective film to eliminate changes with lapse of time to improve durability of the optical disc. A method for producing a reflective film on an optical disc is also disclosed, wherein a trace amount of oxygen is introduced into atmosphere in the course of formation of the reflective film.

Abstract: The present invention relates to N-acylglutamine derivatives of formula (I): ##STR1## The N-acylglutamine derivatives are well compatible with oily bases and have good skin-moisturizing activity and hair growth-stimulative effect. These are useful as cosmetics and hair growth stimulants.

Abstract: A novel xanthine derivative of the formula (I): ##STR1## wherein one of R.sup.1 and R.sup.2 represents substituted or unsubstituted lower alkyl, lower alkenyl, lower alkynyl, substituted or unsubstituted alicyclic alkyl, substituted or unsubstituted phenyl, or substituted or unsubstituted benzyl; and the other represents--(CH.sub.2).sub.m --Xwherein m is 2 or 3, and X is amino substituted phenyl.Q represents ##STR2## (wherein R.sup.3 and R.sup.4 are the same or different and are substituted or unsubstituted alicyclic alkyl), ##STR3## or a pharmacologically accetable salt thereof is disclosed. This derivative has anti-dementia activity.

Abstract: An electrolytic solution for Karl Fischer's coulometric titration comprising a iodide ion, sulfur dioxide, a basic compound and a solvent, and a method for measuring a water content using the same are disclosed. In the electrolytic solution, the basic compound is a mixture comprising an amino alcohol and a compound represented by formula (I): ##STR1## wherein n represents an integer of from 1 to 3, the amino alcohol is present at a molar ratio of not more than 1 to sulfur dioxide, and the amino alcohol and compound represented by formula (I) is present at a total molar ratio of from 1 to 5 to sulfur dioxide. The electrolytic solution is free from a pyridine odor, applicable either as an anolyte or as a catholyte, and capable of considerably reducing time required for water content measurement.

Abstract: An optical disc having an aluminum reflective film is disclosed, wherein an oxide of Al in the stable oxidized state is introduced into the Al reflective film to eliminate changes with lapse of time to improve durability of the optical disc. A method for producing a reflective film on an optical disc is also disclosed, wherein a trace amount of oxygen is introduced into atmosphere in the course of formation of the reflective film.

Abstract: A furan derivative and a pharmaceutically acceptable salt thereof having gastrointestinal enterokinetic activity which is expected to be used in a broad spectrum of diseases associated with gastrointestinal dyskinesia.