Abstract: An etching liquid used for selectively etching silicon nitride, the etching liquid includes: water; a first liquid that can be mixed with the water to produce a mixture liquid having a boiling point of 150° C. or more; and a second liquid capable of producing protons (H+). Alternatively, an etching liquid includes: water; phosphoric acid; and sulfuric acid, the phosphoric acid and the sulfuric acid having a volume ratio of 300:32 to 150:300.

Abstract: A game system includes a first game machine which operates according to a first architecture and, a second game machine which operates according to a second architecture different from the first architecture and has a processing capability lower than that of the first game machine. A game information storage medium stores, in addition to a first game program executable on the first game machine, a second game program executable on the second game machine and an emulator program that converts the second architecture into the first architecture. When a predetermined condition is satisfied while a first game according to the first game program is being executed on the first game machine, it is possible to execute a second game according to the second game program using the emulator program.

Abstract: A communication game system includes a plurality of game apparatuses which are able to wirelessly communicate with each other. Each of the game apparatus registers identifying information of an opponent obtained by a short-distance wireless communication or by user's input in a friend list. Thereafter, the game apparatus connects to the Internet, and inquires server, etc. whether or not it is possible to communicate with the opponent in the friend list over a network. If it is possible to communicate, the game apparatus obtains an address of the opponent to make a network communication. In a case that a still another opponent being connected to its own apparatus exists, when other game apparatus makes a connection, its own game apparatus transmits their identifying information to introduce the communicating opponents to each other. The game apparatuses introduced to each other make a communication over a network, and add the identifying information of the opponents to the friend list, if necessary.

Abstract: Trading cards consists of a single rule card and a plurality of character cards. The rule card is formed with a data recording area on its front surface. The data recording area of the rule card is mechanically readably recorded with rule program data determining a rule of an interactive game. Each character card is formed with a data recording area on its front surface. The data recording area of the character card is mechanically readably recorded with parameter data. An electronic game machine is loaded with a cartridge, and on the electronic game machine, the interactive game according to the rule program data read from the rule card and the parameter data read from the character card is executed on the basis of a game program of the cartridge.

Abstract: A multi-user video game with communications capabilities allows players to communicate with one another via simulated mail, leaflets and conversations. Different installations of the game on different discrete video game playing platforms may be unique or different depending upon random or other data available at the platform. For example, different installations may have different subsets of characters, different landscapes, or the like. Player characters from one virtual environment or village may visit another virtual environment or village and return home to his or her resident environment or village. Non-player characters may move from one virtual environment or village to another—thereby providing an ever-changing variety of characters. Communications between different game playing platforms can be provided via portable memory devices, portable game playing devices, or conventional communications means such as networks.

Abstract: A multi-user video game with communications capabilities allows players to communicate with one another via simulated mail, leaflets and conversations. Different installations of the game on different discrete video game playing platforms may be unique or different depending upon random or other data available at the platform. For example, different installations may have different subsets of characters, different landscapes, or the like. Player characters from one virtual environment or village may visit another virtual environment or village and return home to his or her resident environment or village. Non-player characters may move from one virtual environment or village to another—thereby providing an ever-changing variety of characters. Communications between different game playing platforms can be provided via portable memory devices, portable game playing devices, or conventional communications means such as networks.

Abstract: During a sleep mode, if an input made via operation switches matches a resume condition, a portable game apparatus cancels the sleep mode and generates a resume window. Next, a timer which counts down a predetermined length of time is set off, and the resume window is displayed on an LCD. Then, if an instruction from a user instructs a resume from the sleep mode, the resume window is erased, and game data and a game image which existed immediately before entering the sleep mode are restored, and the normal game processing is resumed. On the other hand, if inactivity for the predetermined length or longer with respect to the operation switches is detected, or if an option of not choosing to resume has been selected by the user, the sleep mode is again entered.

Abstract: A hand-held game apparatus and a game program are provided which allow a user to play a game while going back and forth between two kinds of maps, namely, a narrow-range map and a broad-range map game, and arbitrarily change the displayed state of at least one of the broad-range map and the narrow-range map by manipulating a touch panel which is mounted on a liquid crystal display section for displaying the broad-range map. As liquid crystal display sections embodying two screens, a first liquid crystal display section and a second liquid crystal display section are provided, with a touch panel mounted on the second liquid crystal display section. The first liquid crystal display section displays a narrow-range map, and the second liquid crystal display section displays a broad-range map.

Abstract: An electrode for active oxygen species comprising a conductive component with a polymer membrane of a metal porphyrin complex formed on the surface is disclosed. The electrode for active oxygen species can detect active oxygen species such as superoxide anion radicals, hydrogen peroxide, and .OH and other active radical species (NO, ONOO—, etc.) in any environment including in vivo environment as well as in vitro environment. The electrode thus can be used for specifying various diseases and examining active oxygen species in food or in water such as tap water and sewage water.

Abstract: An organopolysiloxane copolymer, comprising (i) R1SiO3/2 units, (ii) random R22SiO2/2 units, and (iii) linear (R32SiO)n units, wherein R1 is independently hydrocarbyl or halogen-substituted hydrocarbyl, R2 and R3 are independently R1 or H, n has an average value of from 5 to 500, the mole ratio of R1SiO3/2 units to R22SiO2/2 units is from 1 to 30, and the mole ratio of R1SiO3/2 units and R22SiO2/2 units combined to (R32SiO)n units is from 3 to 600 when the copolymer contains aliphatic unsaturation or from 1 to 600 when the copolymer is free of aliphatic unsaturation; and a method of preparing the organopolysiloxane copolymer.

Abstract: A game system includes a first game machine which operates according to a first architecture and, a second game machine which operates according to a second architecture different from the first architecture and has a processing capability lower than that of the first game machine. A game information storage medium stores, in addition to a first game program executable on the first game machine, a second game program executable on the second game machine and an emulator program that converts the second architecture into the first architecture. When a predetermined condition is satisfied while a first game according to the first game program is being executed on the first game machine, it is possible to execute a second game according to the second game program using the emulator program.

Abstract: An organopolysiloxane copolymer, comprising (i) R1SiO3/2 units, (ii) random R22SiO2/2 units, and (iii) linear (R32SiO)n units, wherein R1 is independently hydrocarbyl or halogen-substituted hydrocarbyl, R2 and R3 are independently R1 or H, n has an average value of from 5 to 500, the mole ratio of R1SiO3/2 units to R22SiO2/2 units is from 1 to 30, and the mole ratio of R1SiO3/2 units and R22SiO2/2 units combined to (R32SiO)n units is from 3 to 600 when the copolymer contains aliphatic unsaturation or from 1 to 600 when the copolymer is free of aliphatic unsaturation; and a method of preparing the organopolysiloxane copolymer.

Abstract: This invention pertains to a siloxane resin composition comprising R1SiO3/2 siloxane units, R2SiO3/2 siloxane units and (R3O)bSiO(4-b)/2 siloxane units wherein R1 is an alkyl group having 1 to 5 carbons, hydrogen, or mixtures thereof; R2 is a monovalent organic group having 6 to 30 carbons; R3 is a branched alkyl group having 3 to 30 carbons, b is from 1 to 3; and the siloxane resin contains from 2.5 to 85 mole percent R1SiO3/2 units, 2.5 to 50 mole percent R2SiO3/2 units and 5 to 95 mole percent (R3O)bSiO(4-b)/2 units. The siloxane resin is useful to make insoluble porous resin and insoluble porous coatings. Heating a substrate coated with the siloxane resin at a sufficient temperature effects removal of the R2 and R3O groups to form an insoluble insoluble porous coating having a porosity of 1 to 60 volume percent and a dielectric constant in the range of 1.5 to 3.0.

Abstract: During a sleep mode, if an input made via operation switches matches a resume condition, a portable game apparatus cancels the sleep mode and generates a resume window. Next, a timer which counts down a predetermined length of time is set off, and the resume window is displayed on an LCD. Then, if an instruction from a user instructs a resume from the sleep mode, the resume window is erased, and game data and a game image which existed immediately before entering the sleep mode are restored, and the normal game processing is resumed. On the other hand, if inactivity for the predetermined length or longer with respect to the operation switches is detected, or if an option of not choosing to resume has been selected by the user, the sleep mode is again entered.

Abstract: This invention pertains to a siloxane resin composition comprising HSiO3/2 siloxane units, and (R2O)bSiO(4-b)/2 siloxane units wherein R2 is independently selected from the group consisting of branched alkyl groups having 3 to 30 carbon atoms and substituted branched alkyl groups having 3 to 30 carbon atoms, b is from 1 to 3. The siloxane resin contains a molar ratio of HSiO3/2 units to (R2O)bSiO(4-b)/2 units of 0.5:99.5 to 99.5. The siloxane resin is useful to make insoluble porous resins and insoluble porous coatings. Heating a substrate with the siloxane resin at a sufficient temperature effects removal of the R2O groups to form an insoluble porous coating having a porosity in a range of 1 to 40 volume percent and a modulus in the range of 4 to 80 GPa.

Abstract: A lithium ion battery electrode formed by the pyrolysis of a siloxane polymer of the structure(R.sup.1 R.sup.2 R.sup.3 SiO.sub.0.5).sub.w (R.sup.4 R.sup.5 SiO).sub.x (R.sup.6 SiO.sub.1.5).sub.y (SiO.sub.4/2).sub.zfollowed by introducing lithium ions. In this structure, each R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5 and R.sup.6 are independently selected from the group consisting of hydrogen and a hydrocarbon, w is in the range of 0 to about 0.8, x is in the range of 0 to about 0.9, y is in the range of 0 to about 0.9, z is in the range of 0 to 1 and w+x+y+z=1.

Abstract: Cross-liked resins exhibiting a high level of optical transparency and little variation of refractive index with temperature are prepared using mixtures of two organosiloxane resins in combination with a reinforcing silica filler. The types and relative concentrations of hydrocarbon radicals in the resins are within specified limits to obtain the required optical properties and each resin contains groups that react with groups on the other resin to form a crosslinked network.

Abstract: The invention is a curable composition whose essential structural elements are M and Q units and which provides a cured product that has a flexural modulus capable of withstanding practical applications. The curable organopolysiloxane composition comprises (A) an alkenyl-functional organopolysiloxane whose main components are the R.sup.1.sub.3 SiO.sub.1/2 and SiO.sub.4/2 units where R.sup.1 represents monovalent organic groups, (B) an SiH-containing organopolysiloxane whose main components are the R.sup.2.sub.3 SiO.sub.1/2 and SiO.sub.4/2 units where R.sup.2 represents the hydrogen atom and monovalent organic groups and (C) a platinum catalyst. In addition, the composition exhibits a post-cure flexural modulus of at least 100 MPa.

Abstract: Disclosed is a glass-ceramic product having a chemical composition, as expressed in terms of oxides with the exception of F, in the weight range of 35 to 60% SiO.sub.2, 10 to 20% Al.sub.2 O.sub.3, 12 to 25% MgO, 5 to 15% K.sub.2 O and 4 to 15% F, containing no B.sub.2 O.sub.3, and containing 40 to 70% by weight of fluorophlogopite microcrystals. This glass-ceramic product has a flexural strength of not less than 1500 kgf/cm.sup.2, a heat resistance of about 1100.degree. C., excellent dielectric properties and good machinability, and is a material capable of extending the range of use of high performance ceramics.