PURPOSE:To increase high rate discharge performance by thining the thickness in the lower part of a plate than that in its upper part in an electrode plate group using a liquid absorbing mat-like separator. CONSTITUTION:The thickness T1 in the lower part of a positive plate 1 and/or a negative plate 2 are thinned compared with the thickness T0 in its upper part to meet a relation of T1<=0.95T0. A ...

PURPOSE:To increase chargeability and capacity recovery ability of an overdischarged battery which was allowed to stand, and to especially increase the reliability of a small sealed lead-acid battery by vapor-depositing Au on a cathode substrate. CONSTITUTION:A gold thin film is vapor-deposited on a cathode substrate. Thereby, even if a high resistant layer of lead sulfate is formed after an overc...

PURPOSE:To increase the activity of an active material, and to increase the utilization factor of the active material and formation efficiency by superimposing AC current on DC formation current applied to plates in a container formation process which is performed after a battery is assembled. CONSTITUTION:In a container formation process, AC current having a frequency of 10-60Hz is superimposed o...

An X-ray scanner comprising an array of detectors (16) and an X-ray tube (4) with elongated anode (26) or double focus can be operated in different modes: - the unpaired mode by using all the detector signals separately - the paired mode by combining the signals of two adjacent detectors, respectively - the dual energy mode by selectively attributing different spectral filters (43, 45) to alterna...

A method of intermittently dressing the ring-shaped surface or active rim of an axially adjustable dished grinding wheel of a gear grinding machine and which active rim acts upon a workpiece. The position of the active rim is controlled and the grinding wheel adjusted such that the ring-shaped surface or active rim is retained at the same location independent of its wear. The active rim is dressed...

An antimicrobial composition is prepared containing an aryl compound carrying an oleophilic substituent and a hydrophilic substituent, and an antimicrobial agent coordinated to the hydrophilic substituent. The oleophilic substituent is a straight alkyl radical from 6 to 24 carbon atoms and the hydrophilic substituent is a sulpho or hydroxyl group. The antimicrobial agent is an imidazole, a benzimi...

A polyurethane foam formulation for spraying onto the side walls of moulds is provided. The polyurethane foam formulation comprises (a) a polymer polyol having a viscosity in the range of 3,000 to 8,000 cps at 25 DEG C, (b) an isocyanate selected from toluene diisocyanate; di(4-isocyanatophenyl)methane; or derivatives thereof, (c) a catalyst for the polyurethane forming reaction comprising an amin...

Data are transmitted through a column of drilling mud in a drill string that is being used in drilling a borehole in an underground formation. The data are in the form of pressure waves (such as pressure pulses) and are generated by means of a downhole mud motor that is driven by the drilling mud. The pressure waves are generated by varying the load on the mud motor according to a predetermined pa...

High strength and modulus polyethylene objects are prepared by polymerizing ethylene in a hydrocarbon solvent in the presence of a catalyst system to form a 1-30 wt.% solution of linear polyethylene with an Mw of 4 x 10<5> to 5 x 10<6>, converting this solution into a solvent-containing object (fiber, tape, film), cooling this object to form a gel object and subjecting this latter to a stretching ...

A silicone foam composition comprising a vinyl-containing polysiloxane, optionally a filler, water, a hydrogen-containing polysiloxane and a platinum catalyst. Such a silicone foam composition is useful as flame insulative material and especially for electrical systems in nuclear plants.

Process for producing a flowable cement concrete mixture or cement mortar mixture which contains air pores and does not demix and contains cement, water and natural aggregates together with plasticizers, air pore formers and, if appropriate, customary additives and has, in particular, a slump value (Austrian standard B 4200) of from 58 to 64 cm, where the density of the finished concrete or mortar...

This sorbent is formed by a block copolymer based on polyethylene oxide and poly-6-caprolactam in porous powdered form, having a content of 1 to 40 % by weight of polyethylene oxide units, a specific surface of 0.1 to 80 m<2>/g, a mean pore radius preferably of 1 to 600 nm, a pore volume of 0.1 to 2.5 ml/g and a porosity of 1 to 60 %. The principle of the method of producing this sorbent is t...

A process for treating organically contaminated liquid hazardous waste comprises adding to the waste Portland cement, fly ash and activated carbon.

Process for purifying phosphate containing waste waters in which aluminum oxide is used as the sorption material. The waste water is brought into contact with fine-grained aluminum oxide in a grain size range from 0.05 to 0.2 mm. Simultaneously, a gas is blown in, which is inert with respect to Al2O3 and with respect to phosphate ions.

PURPOSE:To obtain a high tension steel plate ensuring satisfactory toughness at low temp. in the weld zone by adding B and reducing the amount of acid-sol. Al so as to accelerate the precipitation of BN and by reducing the amount of sol. B so as to prevent the deterioration of toughness. CONSTITUTION:The composition of a steel is composed of, by weight, 0.03-0.12% C, 0.05-0.4% Si, 0.7-1.6% Mn, <0....

Method of manufacturing body panels and other articles of the same kind, in particular refrigerator body panels, in which sheets 1 made of synthetic material, rendered plastic under the action of heat, are vacuum-formed in moulds 5, this vacuum-forming being carried out in at least two steps, each of which involves different regions of the starting sheet 1.