Abstract: The invention provides a cooling device provided with a heat pipe, which is capable of effectively radiating heat from electronic equipment such as a small-sized computer. The cooling device with the heat pipe comprises a plate-like container made of heat transferring metal for containing a working fluid, and having a heat absorbing surface larger than that of the body to be cooled, a the heat transferring metal column, and a hollow portion in which the working fluid exists. An alternating embodiment of the cooling device with the heat pipe comprises a plate-like container made of heat transferring metal, a heat absorbing wall having a large heat absorbing surface, and a plurality of protrusion portions.

Abstract: There is provided a hydrogen-absorbing alloy comprising, as a principal phase, at least one kind of phase selected from the group consisting of a first phase having a hexagonal crystal system (excluding a phase having a CaCu5 type crystal structure) and a second phase having a rhombohedral crystal system, the hydrogen-absorbing alloy having a composition represented by the following general formula (1): R1−a−bMgaTbNiZ−X−Y−&agr;M1XM2YMn60   (1) wherein R is at least one kind of element selected from rare earth elements (which include Y), T is at least one element selected from the group consisting of Ca, Ti, Zr and Hf, M1 is at least one element selected from the group consisting of Co and Fe, M2 is at least one element selected from the group consisting of Al, Ga, Zn, Sn, Cu, Si, B, Nb, W, Mo, V, Cr, Ta, Li, P and S, and the atomic ratios of a, b, X, Y, &agr; and Z are respectively a number satisfying the conditions of: 0.15≦a≦0.37, 0≦b≦0.3, 0≦X≦1.

Abstract: A plate type heat pipe comprises two plate members facing each other to form a hermetically sealed container, on either one of which plate members at least one heat generating parts are mounted, at least one heat transfer block having a cross sectional area equal to or larger than a cross sectional area of the heat generating part, the heat transfer block being disposed at a prescribed position within the hollow portion corresponding to a position of the plate member to which the heat generating part is thermally connected, and a working fluid enclosed in the container.

Abstract: A plate type heat pipe comprises: a plate type container which includes a heat absorbing side and a heat dissipating side to form a hermetically sealed hollow portion; at least one heat transfer block which is thermally connected to each of inner walls of the heat absorbing side and the heat dissipating side; a wick which is placed along a side wall of the heat transfer block through the inner wall of the heat dissipating side; and a working fluid enclosed in the hollow portion. A securing member to secure the wick and the heat transfer block in close contact may be further included.

Abstract: A compressed mesh wick prepared by bending for plurality of times at least one sheet of band type mesh wire to form a prescribed shape, thus preparing a bent layered mesh body, and pressing the bent layered mesh body.

Abstract: There is provided a nickel-hydrogen secondary battery which comprises a negative electrode comprising a hydrogen-absorbing alloy represented by the following general formula (A), a positive electrode, and an alkaline electrolyte, and which meets the conditions represented by the formulas (1) and (2), (R1-xMgx)NiyAz   (A) wherein R is at least one element selected from rare earth elements (including yttrium), Ca, Zr and Ti, A is at least one element selected from Co, Mn, Fe, V, Cr, Nb, Al, Ga, Zn, Sn, Cu, Si, P and B, and x, y and z are atomic ratio individually defined as 0<x<1, 0≦z≦1.5, 2.5≦y+z<4.5, 3.2≦P≦5.0   (1) 0.9≦Q≦0.2P+0.7   (2) wherein P is a quantity (g) of the hydrogen-absorbing alloy per theoretical capacity 1 Ah of the positive electrode, and Q is a quantity (mL) of the alkaline electrolyte per theoretical capacity 1 Ah of the positive electrode.

Abstract: The present invention relates to a blasting method which comprises conducting a delay blast at a particular location; predicting time series data of a waveform of ground vibration or noise at a remote location to be generated by a hypothetical single-hole blast at the particular location using at least one of previous time series data of a waveform of ground vibration or noise generated by said delay blast and actually monitored at the remote location, and the corresponding previous actually applied initiation time series of said delay blast; computing a delay blasting initiation time series for a delay blasting, which provides a waveform of ground vibration or noise satisfying specific conditions, based on the above-predicted time series data of a single-hole blast; and carrying out a subsequent delay blast according to the computed delay blasting initiation time series.

Abstract: There is provided a hydrogen-absorbing alloy comprising at least one crystal phase consisting essentially of at least one unit cell which has a laminate structure comprising at least one A2B4 subcell and at least one AB5 subcell, and the aforementioned at least one unit cell satisfying the following formula (1), 0.5<X<1  (1) wherein A is at least one kind of element which is capable of generating heat of formation &Dgr;H (kJ/mol) of less than 20 kJ/mol at the occasion of generating a hydride from one mole of hydrogen at a temperature of 25° C., B is at least one kind of element which is capable of generating heat of formation &Dgr;H (kJ/mol) of not less than 20 kJ/mol at the occasion of generating a hydride from one mole of hydrogen at a temperature of 25° C., and X is a ratio in number of the aforementioned at least one A2B4 subcell to the aforementioned at least one AB5 subcell.

Abstract: A nickel-hydrogen secondary battery having a negative electrode comprising a hydrogen-absorbing alloy containing magnesium, a rare earth element and nickel as essential elements, which is capable of suppressing the self-discharge being occurred under the condition of high temperature storage, or the like. This secondary battery comprises a negative electrode containing a hydrogen-absorbing alloy, a positive electrode containing nickel hydroxide, a separator comprising a non-woven fabric, and an alkaline electrolyte. The hydrogen-absorbing alloy is represented by (R1−xMgx)NiyAz (wherein R is at least one element selected from rare earth elements (including yttrium), Ca, Zr and Ti, A is at least one element selected from Co, Mn, Fe, V, Cr, Nb, Al, Ga, Zn, Sn, Cu, Si, P and B), and x, y and z are atomic ratio individually defined as 0<x<1, 0≦z≦1.5, 2.5≦y+z<4.5).

Abstract: The present invention relates to a cooling unit for electronic devices wherein the manufacturing method comprises the steps of: (a) preparing a plate-type metal block for removing heat generated from an electronic component, the metal block having holes in the thickness part of the metal block and having convex portions formed on one main surface or both main surfaces of the metal block; (b) inserting heat pipes into the holes; and (c) applying a local and two-dimensional force from the surface of the metal block to the convex portions to make the surface flat bringing the outer surface of each heat pipe into close contact with the inner wall of each hole in the metal block.

Abstract: There is provided a hydrogen-absorbing alloy which contains an alloy ingot manufactured by means of a casting or sintering method or a pulverized product of the alloy ingot, and the alloy ingot being represented by the following general formula (1),(Mg.sub.1-a-b R1.sub.a M1.sub.b)Ni.sub.z (1)wherein R1 is at least one element selected from rare earth elements (including Y), M1 is at least one element selected from elements having a larger electronegativity than that of Mg (excluding the elements of R1, Cr, Mn, Fe, Co, Cu, Zn and Ni), and a, b and z are respectively a number satisfying conditions 0.1.ltoreq.a.ltoreq.0.8, 0<b.ltoreq.0.9, 1-a-b>0, and 3.ltoreq.z.ltoreq.3.8.

Abstract: The invention provides a cooling device with a heat pipe, which is capable of effectively radiating heat from electronic equipment such as a small-sized computer. The cooling device with the heat pipe comprises a plate-like container made of heat transferring metal for containing a working fluid, and having a heat absorbing surface larger than that of the body to be cooled, a heat transferring metal column, and a hollow portion in which the working fluid exists. An alternating embodiment of the cooling device with the heat pipe comprises a plate-like container made of heat transferring metal, a heat absorbing wall having a large heat absorbing surface, and a plurality of protrusion portions.

Abstract: A hydrogen absorbing electrode containing a hydrogen absorbing alloy consisting mainly of AB.sub.3 type crystal-structure phase and represented by the following formula (I) is providedR(Ni.sub.1-x M.sub.x).sub.z (I)wherein R is at least one element selected from rare earth elements (including Y), M is at least one element selected from the group consisting of Al, Ga, Zn, Sn, Cu, Si, Ag, In, Ti, Zr, Hf, V, Nb, Ta, Cr, Fe, Mn, Mo and W, and x and z are respectively a number satisfying conditions 0.01.ltoreq.x.ltoreq.0.2, and 2.5<z<3.25.

Abstract: A method and hot rolling apparatus for producing a hot rolled steel sheet include a roughing rolling mill to roughing roll a heated slab into a sheet bar, at least one solenoid-type induction heater arranged for re-heating the sheet bar over its entire width, and a finish rolling mill arranged to finish roll the re-heated sheet bar into a hot rolled steel sheet having a predetermined thickness. An initial temperature before rolling is set to be low, and re-heating of the sheet bar is carried out around the middle of the hot rolling apparatus. The thermal energy required for rolling is thereby reduced as a whole without damaging the quality of the resulting hot rolled steel sheet. A descaling apparatus is provided prior to the finish rolling mill to remove oxide scales on surfaces of the sheet bar, whereby the resulting hot rolled steel sheet is free of scale flaws and exhibits superior surface properties.

Abstract: The present invention relates to a cooling unit for electronic devices wherein the manufacturing method comprises the steps of: (a) preparing a plate-type metal block for removing heat generated from an electronic component, the metal block having holes in the thickness part of the metal block and having convex portions formed on one main surface or both main surfaces of the metal block; (b) inserting heat pipes into the holes; and (c) applying a local and two-dimensional force from the surface of the metal block to the convex portions to make the surface flat bringing the outer surface of each heat pipe into close contact with the inner wall of each hole in the metal block.

Abstract: Making method of hot-rolled steel sheet comprises rough rolling a slab into a rough bar, heating the rough bar, guiding the rough bar with side guides and finish rolling the rough bar. The apparatus comprises a rough rolling mill, a heating device for heating the rough bar, side guides for guiding the rough bar and a finish rolling mill.

Abstract: A tire pressure detector of an automobile, comprises a magnet having N and S poles and rotated in accordance with a pneumatic pressure in a tire, the N and S poles being rotatable in reverse, detecting means, arranged opposite to the magnet, for detecting magnetism and outputting a voltage signal changed to different magnetism level in accordance with rotation of the magnet, and determining means for comparing the voltage signal with a positive or negative threshold value and determining whether the pneumatic pressure in the tire is within a suitable range, based on a polarity of the voltage signal represented by a comparison result.

Abstract: A nickel-hydrogen secondary battery comprising, a positive electrode containing nickel hydroxide, a negative electrode containing a hydrogen-absorbing alloy, a separator interposed between the positive electrode and the negative electrode and containing olefin-containing-polymer based fibers having an ion-exchange group, and an alkaline electrolyte having a normality of 5 or more in concentration, wherein the separator satisfies the following equation (1):{0.409-(X/55)}.ltoreq.Y.ltoreq.{0.636+(2X/55)} (1)where X is a chemical equivalent of alkaline electrolyte per 1 Ah of battery capacity (meq/Ah) and Y is an ion-exchange capacity of the separator per 1 Ah of battery capacity (meq/Ah).

Abstract: A nickel-hydrogen secondary battery is disclosed wherein a long life is assured, an improved self-discharging property in a high temperature storage and the inhibition of increase in inner pressure of the battery in the occasion of over-charging can be realized. The nickel-hydrogen secondary battery comprises, a case, a paste-type positive electrode accommodated in the case and containing nickel hydroxide and a polymeric binder, a paste-type negative electrode accommodated in the case and containing a hydrogen-absorbing alloy and a polymeric binder, a separator accommodated in the case in so as to be interposed between the positive and negative electrodes, and an alkali electrolyte accommodated in the case.

Abstract: A hot-dipped aluminum coated steel sheet including, on the surface thereof, a coating layer consisting of 2 to 15 wt % of Si, not greater than 1.2 wt % of Fe, 0.005 to 0.6 wt % of Mn, 0.002 to 0.05 wt % of Cr and the balance of Al and unavoidable impurities, and an alloy layer disposed between the coating layer and the steel sheet, having a thickness of not greater than 7 .mu.m and having a mean composition consisting of 20 to 50 wt % of Fe, 3 to 20 wt % of Si, 0.1 to 10 wt % of Mn, 0.05 to 1.0 wt % of Cr and the balance substantially consisting of Al. This steel sheet can be produced by conducting coating in a coating bath consisting of 3 to 15 wt % of Si, 0.5 to 3.5 wt % of Fe, 0.05 to 1.5 wt % of Mn, 0.01 to 0.2 wt % of Cr and the balance substantially consisting of Al, or by adjusting the sum of the concentrations of Zn and Sn in the impurities in the coating layer to not greater than 1 wt %.