Abstract: A glass, substantially not including an alkali metal oxide and BaO, and including, in terms of mol % on the basis of oxides, 40 to 44% of SiO2, 15 to 23% of MgO, 28 to 36% of CaO, and 5 to 10% of Al2O3, in which a total content of SiO2, MgO, CaO, and Al2O3 is 97% or more, in which a molar ratio of CaO content to MgO content represented by CaO/MgO is 1.2 to 2.3.

Abstract: It is an object of the present invention to provide a beneficial composition in order to detoxify the harmful compound containing arsenic etc. effectively and systematically and a method for detoxifying a harmful compound by using the composition. The composition for the alkylation according to the present invention is characterized in that the composition contains a cobalt complex. The method of detoxifying the harmful compound according to the present invention is characterized in that a harmful compound containing at least one element selected from the groups comprising arsenic, antimony and selenium is detoxified by the alkylation of the harmful compound, in the presence of the composition according to the present invention.

Abstract: To provide a process for producing an airtight member, which can improve bonding property of a sealing layer to a highly thermally conductive substrate and reliability, in airtight sealing of a space between a glass substrate and a highly thermally conductive substrate by local heating by electromagnetic waves. A glass substrate having a sealing material layer having electromagnetic wave absorbing property provided on a sealing region, and a highly thermally conductive substrate having a glass layer formed on a sealing region, are laminated while the sealing material layer and the glass layer are brought into contact with each other. The sealing material layer is irradiated with electromagnetic waves through the glass substrate to heat and melt the sealing material layer thereby to bond it to the glass layer, so as to form a sealing layer which airtightly seals the space between the glass substrate and the thermally conductive substrate.

Abstract: To provide a reflective frame for a light-emitting element, which can be preferably used for a light-emitting device having a metal member on which a light-emitting element is mounted, whereby the light extraction efficiency, the reliability and the productivity, etc. can be improved. A reflective frame for a light-emitting element, which is made of a sintered body comprising a glass material and a ceramic powder; and the sintered body is one fired at at most 900° C. and has a porosity of at most 15% and an average reflectance at a wave length of from 400 to 700 nm being at least 86% when the thickness is 1 mm.

Abstract: It is an object of the present invention to provide a method of detoxifying a methyl compound comprising arsenic etc., effectively and systematically. The method of detoxifying a methyl compound according to the present invention is characterized in that an organic halogenated compound is reacted with a methyl compound comprising at least one element selected from the groups comprising arsenic, antimony and selenium to convert the methyl compound into more harmless substances. Furthermore, in a preferred embodiment of the method of detoxifying a methyl compound according to the present invention, the method is characterized in that the element is arsenic.

Abstract: Provided is a light-emitting device provided with a light reflection layer which has a high light reflectivity and which is less susceptible to deterioration of the reflectivity due to corrosion, and having an improved light extraction efficiency. A light-emitting device comprising a substrate having a conductor layer formed on its surface and a light-emitting element disposed on the conductor layer, characterized in that an overcoat layer is formed between the conductor layer and the light-emitting element, and the overcoat layer is a borosilicate glass which comprises, as represented by mol % based on oxides, from 62 to 84% of SiO2, from 10 to 25% of B2O3, from 0 to 5% of Al2O3 and from 0 to 5% in total of at least one of Na2O and K2O, provided that the total content of SiO2 and Al2O3 is from 62 to 84%, and may contain from 0 to 10% of MgO and at least one of CaO, SrO and BaO in a total content of at most 5%.

Abstract: The present disclosure describes a method for recovering metals such as gallium, indium and aluminum from III-V group compound semiconductors or semiconducting materials thereof containing arsenic, antimony and/or selenium. The method includes the step of adsorbing the arsenic, antimony and selenium selectively to an adsorbent containing the rare-earth metal compound with the use of the adsorbent.

Abstract: To provide a light emitting diode package of which the height of protrusion of a thermal via is decreased without decreasing the flexural strength of an insulating substrate. A light emitting diode package comprising a light emitting diode element mounted on a substrate, wherein the substrate is obtained by firing a glass ceramic composition containing a powder of glass containing, as represented by mole percentage, from 57 to 65% of SiO2, from 13 to 18% of B2O3, from 9 to 23% of CaO, from 3 to 8% of Al2O3 and from 0.5 to 6% of at least one of K2O and Na2O in total, and a ceramic filler.

Abstract: Provided is a light-emitting device provided with a light reflection layer which has a high light reflectivity and which is less susceptible to deterioration of the reflectivity due to corrosion, and having an improved light extraction efficiency. A light-emitting device comprising a substrate having a conductor layer formed on its surface and a light-emitting element disposed on the conductor layer, characterized in that an overcoat layer is formed between the conductor layer and the light-emitting element, and the overcoat layer is a borosilicate glass which comprises, as represented by mol % based on oxides, from 62 to 84% of SiO2, from 10 to 25% of B2O3, from 0 to 5% of Al2O3 and from 0 to 5% in total of at least one of Na2O and K2O, provided that the total content of SiO2 and Al2O3 is from 62 to 84%, and may contain from 0 to 10% of MgO and at least one of CaO, SrO and BaO in a total content of at most 5%.

Abstract: To provide a light emitting diode package of which the height of protrusion of a thermal via is decreased without decreasing the flexural strength of an insulating substrate. A light emitting diode package comprising a light emitting diode element mounted on a substrate, wherein the substrate is obtained by firing a glass ceramic composition containing a powder of glass containing, as represented by mole percentage, from 57 to 65% of SiO2, from 13 to 18% of B2O3, from 9 to 23% of CaO, from 3 to 8% of Al2O3 and from 0.5 to 6% of at least one of K2O and Na2O in total, and a ceramic filler.

Abstract: It is an object of the present invention to provide a beneficial method of detoxifying a harmful compound in order to detoxify the harmful compound containing arsenic etc. effectively. A method of detoxifying a harmful compound according to the present invention is characterized in that a harmful compound containing at least one element selected from the group comprising arsenic, antimony and selenium is detoxified by an exposure to light and/or a heating under the presence of a cobalt complex. In a preferred embodiment of the method of detoxifying a harmful compound according to the present invention, the method is characterized in that the harmful compound is detoxified by an alkylation of arsenic, antimony and selenium.

Abstract: It is an object of the present invention to provide a method of detoxifying a methyl compound comprising arsenic etc., effectively and systematically. The method of detoxifying a methyl compound according to the present invention is characterized in that an organic halogenated compound is reacted with a methyl compound comprising at least one element selected from the groups comprising arsenic, antimony and selenium to convert the methyl compound into more harmless substances. Furthermore, in a preferred embodiment of the method of detoxifying a methyl compound according to the present invention, the method is characterized in that the element is arsenic.

Abstract: There is disclosed a photocatalyst which comprises a substrate having a photocatalytic function and metallic nanocolloid particles that are supported on the substrate by the use of a metallic nanocolloid liquid substantially free from a protective colloid formation agent. A highly active photocatalyst containing metallic ultrafine particles is provided by bringing a substrate such as fine particles having a photocatalytic function into contact with a metallic nanocolloid liquid which is substantially free from a protective colloid formation agent, and which has favorable dispersion stability even if containing metallic nanocolloid particles in a relatively high concentration. Accordingly the photocatalyst containing metallic ultrafine particles can be produced at a low cost without being restricted on the place of production.

Abstract: It is an object of the present invention to make it possible to recover and recycle the rare metals such as gallium and indium safely from the III-V group compound semiconductors. A method for recovering the metals according to the present invention is characterized by recovering at least one metal selected from the group comprising gallium, indium and aluminum from the III-V group compound semiconductors or the semiconducting materials of them containing at least one element selected from the group comprising arsenic, antimony and selenium, and comprising the step of adsorbing the arsenic, antimony and selenium selectively to an adsorbent containing the rare-earth metal compound with the use of the adsorbent.

Abstract: The present invention provides a metal nanocolloidal liquid characterized by containing a dispersion medium and nanocolloidal metal particles, and containing substantially no protective colloid-forming agent; and a method for producing a metal-on-carrier, characterized by including causing nanocolloidal metal particles to be carried on a carrier by use of the metal nanocolloidal liquid. According to the production method, nanocolloidal metal particles can be efficiently caused to be carried on a carrier, and a metal-on-carrier which is useful in a variety of fields can be industrially advantageously produced.

Abstract: It is an object of the present invention to provide a beneficial composition in order to detoxify the harmful compound containing arsenic etc. effectively and systematically and a method for detoxifying a harmful compound by using the composition. The composition for the alkylation according to the present invention is characterized in that the composition contains a cobalt complex. The method of detoxifying the harmful compound according to the present invention is characterized in that a harmful compound containing at least one element selected from the groups comprising arsenic, antimony and selenium is detoxified by the alkylation of the harmful compound, in the presence of the composition according to the present invention.

Abstract: The detoxification method characterized by comprising converting at least one member selected from the group comprising arsenic, antimony and selenium into a harmless substance produced in a food chain system by using the food chain system. The method of detoxifying a harmful compound as described above is characterized by comprising converting a harmful compound containing at least one element selected from the group comprising arsenic, antimony, and selenium into a harmless substance by using a food chain system containing a larval zooplankton.

Abstract: It is an object of the present invention to provide a method for the safe and effective detoxification of a hazardous compound containing the arsenic and or the like. The method for the detoxification of a hazardous compound according to the present invention is characterized in that the hazardous compound containing at lest one element selected from the groups comprising arsenic, antimony and selenium is converted to a harmless substance produced by the food chain system.

Abstract: The present invention provides a metal nanocolloidal liquid characterized by containing a dispersion medium and nanocolloidal metal particles, and containing substantially no protective colloid-forming agent; and a method for producing a metal-on-carrier, characterized by including causing nanocolloidal metal particles to be carried on a carrier by use of the metal nanocolloidal liquid. According to the production method, nanocolloidal metal particles can be efficiently caused to be carried on a carrier, and a metal-on-carrier which is useful in a variety of fields can be industrially advantageously produced.

Abstract: A method for forming colloidal particles by boiling a solution containing a metal salt and a reducing agent; and a method for preparing a colloidal solution wherein the concentration of the metal salt in the solution is 1×10?4 mol/L or more and less than 4×10?4 mol/L; the equivalent concentration of the reducing agent is four times or more and 20 times or less the equivalent concentration of the metal salt; and the reaction time is 60 minutes or more and 300 minutes or less. A carrier wherein colloidal particles are fixed on the surface of a substrate by applying the colloidal solution prepared by the above-described method. Methods for manufacturing a fuel cell cathode, a fuel cell anode, and a low temperature oxidation catalyst wherein a colloidal solution prepared in the state wherein a solution containing a metal salt and a reducing agent is boiled to remove dissolved oxygen is applied to a substrate and colloidal particles are fixed on the substrate.