Abstract: This invention relates to a silver/metal oxide material for electrical contacts containing no Cd which essentially consists of Ag and 5 to 30% by weight of at least one of oxides of Sb, Sn, Zn, In, Cu, Mn, Bi and Pb, and further, if necessary, 0.05 to 2% by weight of at least one of oxides of Mg, Al, Fe, Ni, Co, Si, Ga, Ge, Te, Ca and Li, the total amount of said metal oxides being 5 to 32% by weight, wherein fine particles of said metal oxides are substantially uniformly distributed in a matrix whose main component is Ag in a sintered state, and wherein there are no grain boundaries formed by agglomerations or agglomerated layers of said metal oxides.

Abstract: In this invention, a call control information of a subscriber's line is compiled into a packet form, is transferred via a network of a digital switch board to a signal control device, and digital data is also transferred via the network to a handler. Accordingly, a signal from a digital subscriber is efficiently processed, and an analog subscriber is also accommodated so that a call control in the same way as for the digital subscriber is made possible for the analog subscriber.

Abstract: A digital subscriber line formed by terminal equipment, a network control device including a plurality of the terminal equipment, and an exchange terminal. In a waiting state of the digital subscriber line, the network control derive is placed in a state which can only receive a signal. A sending portion of the network control device is driven when, at a call from the terminal equipment, the terminal control device receives a line activation signal from the exchange equipment and when, at an incoming state from the state from the exchange terminal, the terminal control device receives a line activation from the exchange equipment. The synchronization pattern signal is sent from the sending portion to the exchange terminal so that the synchronization of the exchange terminal is established.

Abstract: A digital exchange system including exchange terminals, a digital network, and a bit rate conversion unit located therebetween. The bit rate conversion unit operates to match low bit-rate channel signals with high bit-rate channel signals acceptable by the digital network, by multiplexing a plurality of the outgoing low bit-rate channel signals. The bit-rate conversion unit operates, on the other hand, to demultiplex the incoming multiplexed low bit-rate channel signals.

Abstract: A digital switch module for a time division digital switching system includes an encoding law conversion memory and a control memory. The encoding law conversion memory has previously stored therein conversion data for converting between different types of encoding laws. For example, the A-law and .mu.-law encoding laws set forth in CCITT Recommendation G.711 can be converted by a digital switch module according to the present invention. The encoding law conversion memory includes a read only memory having regions for conversion between A-law and .mu.-law encoded data and for nonconversion of both A-law and .mu.-law encoded data. The control memory designates which of the regions in the encoding law conversion memory is to be used during each time slot, thus dynamically controlling whether data passing through the digital switch module is converted or not. The type of conversion or nonconversion designated by the control memory can be determined by the type of data, e.g.

Abstract: A gallium alloy for dental restorations which is hardenable at mouth temperature or around 37.degree. C. or more after triturating multicomponent liquid gallium alloy with alloy powder, is disclosed. The mixture has a heterogeneous structure after hardening, and contains as the overall composition, 9-47% gallium, 1-35% indium, 0.2-38% tin and 1-68% silver as indispensable components and one or more elements selected from 0.4-35% palladium, 0.5-25% copper and 0.4-12% zinc as arbitrary components. The multicomponent liquid gallium alloy contains 45-85% gallium, 5-40% indium and 1-30% tin as fundamental components and small amounts one or more elements selected from silver, palladium, gold, platinium, copper, zinc and germanium as arbitrary components. The alloy powder contains 1-85% silver and two or more elements selected from 1-40% tin, 1-40% palladium, 1-30% copper, 1-15% zinc and 1-25% indium.

Abstract: The antibacterial compounds 7-deazaadenosine and 7-deazinosine are produced by fermentation of a new microorganism of the genus Micromonospora. At least one of the active substances is isolated from the culture medium.

Abstract: New antibacterial compounds, XK-62-3 and XK-62-4, are produced by fermentation of microorganisms belonging to the genus Micromonospora. The compounds are accumulated in the culture liquor and are isolated therefrom.

Abstract: New antibacterial compounds, XK-62-3 and XK-62-4, are produced by fermentation of microorganisms belonging to the genus Micromonospora. The compounds are accumulated in the culture liquor and are isolated therefrom.

Abstract: Derivatives of the antibiotic XK-62-2 are prepared by chemically modifying the antibiotic XK-62-2. An example of one such derivative is 1-N-[L-(-)-.alpha.-hydroxy-.gamma.-aminobutyryl]XK-62-2.

Abstract: New antibiotic compounds, Fortimicin factors D and KE are produced by fermentation of microorganisms belonging to the genus Micromonospora. The antibiotic compounds are accumulated in the culture liquor and are isolated therefrom. A semisynthetic method of producing Fortimicin KE utilizing Fortimicin D is also disclosed.

Abstract: New antibiotic compounds, Fortimicin factors KF and KG are produced by fermentation of microorganisms belonging to the genus Micromonospora. The antibiotic compounds are accumulated in the culture liquor and are isolated therefrom.

Abstract: A novel antibacterial compound, XK-99, is produced by fermentation of an organism belonging to the genus Micromonospora. The compound is isolated from the microbial cells and culture liquor.

Abstract: New antibiotic compounds, Fortimicin factors D and KE are produced by fermentation of microorganisms belonging to the genus Micromonospora. The antibiotic compounds are accumulated in the culture liquor and are isolated therefrom. A semisynthetic method of producing Fortimicin KE utilizing Fortimicin D is also disclosed.

Abstract: Derivatives of the antibiotic XK-62-2 are prepared by chemically modifying the antibiotic XK-62-2. An example of one such derivative is 1-N-[L-(-)-.alpha.-hydroxy-.gamma.-aminobutyryl] XK-62-2.

Abstract: A new antibiotic, Fortimicin C, is produced by fermentation of a microorganism belonging to the genus Micromonospora. The antibiotic is accumulated in the culture medium and is isolated therefrom.

Abstract: 1-N-[L-(-)-.alpha.-hydroxy-.gamma.-aminobutyryl]XK-62-2 is produced by chemically modifying the antibiotic XK-62-2.

Abstract: A new antibiotic, Fortimicin C, is produced by fermentation of a microorganism belonging to the genus Micromonospora. The antibiotic is accumulated in the culture medium and is isolated therefrom.

Abstract: A novel series of antibiotics designated the XK-88 series are produced by culturing a microorganism belonging to the genus Streptomyces in a nutrient medium and thereafter recovering the antibiotics from the culture liquor.

Abstract: The antibiotic XK-62-2 is produced by fermentation of microorganisms belonging to the genus Micromonospora. The antibiotic is accumulated in the culture liquor and is isolated therefrom.