The invention relates to a process for the preparation of positive or negative active mass of lead accumulators by using the active mass separated from production-refuse plates and/or the active-mass wastes produced during production. According to the invention when positive active mass is prepared then positive active mass, while when the negative active-mass is prepared then negative active-mass...

The invention relates to a process for the preparation of positive or negative active mass of lead accumulators by using the active mass separated from production-refuse plates and/or the active-mass wastes produced during production. According to the invention when positive active mass is prepared then positive active mass, while when the negative active-mass is prepared then negative active-mass...

Fine particles of gelatin and amino acid used in the present invention are particularly suitable for use in combination with resins. Gelatin particles used in the present invention have the number-average molecular weight of 8,500 or less, and amino acid partiles with the number-average molecular weight of 200 or less, so that efficient pulverization becomes possible and that gelatin and amino aci...

The present invention discloses a double guided slide valve apparatus for producing pressure pulses in drilling mud medium flowing through a drill string casing.

A device for dissecting, grasping and/or cutting an object has at least two elongate elements at least a portion of at least one of the elements is formed from a pseudoelastic material, preferably a pseudoelastic shape memory alloy. End portions of the elements can be moved away from one another and then toward one another to dissect, grasp and,/or cut an object with the elements. In certain embod...

07-27(604)A METHOD FOR PRODUCING SYNTHETIC N-LINKED GLYCOCONJUGATES A method is disclosed for derivatizing oligosaccharides to form synthetic N-linked glycoconjugates by converting a glycosylamine derivative of the oligosaccharide to a haloacetylated derivative as an intermediate compound prior to formation of the synthetic N-linked glycoconjugate to thereby maintain the .beta.-anomeric configurat...

PCT/US90/04608 A vibration isolation system (12) utilizes various configurations of elastic structures loaded to approach a point of elastic instability. In one form of the invention, the system uses a combination of a negative-stiffness mechanism (28) and a positive spring (20) to support a payload and provide zero or near-zero net stiffness in the vertical direction. Horizontal motion is general...

A process for the manufacture of a continuous press shell that is liquid-tight and smoothed on its inside, and which can be used as a press element in a dewatering press is provided. The press shell consists of a continuous wire belt which on its outside is coated with a plastic. Upon the smoothing of its outside, the coated press shell is turned, so that for the use of the press shell its smoothe...

A process for the manufacture of a continuous press shell that is liquid-tight and smoothed on its inside, and which can be used as a press element in a dewatering press is provided. The press shell consists of a continuous wire belt which on its outside is coated with a plastic. Upon the smoothing of its outside, the coated press shell is turned, so that for the use of the press shell its smoothe...

A process for the manufacture of a continuous press shell that is liquid-tight and smoothed on its inside, and which can be used as a press element in a dewatering press is provided. The press shell consists of a continuous wire belt which on its outside is coated with a plastic. Upon the smoothing of its outside, the coated press shell is turned, so that for the use of the press shell its smoothe...

A sensor element 10 includes an analyte-permeable matrix 16 which supports and maintains a sensing solution containing an analyte-sensitive indicator substance in a plurality of tiny vesicles 18. The sensor element is prepared by combining the sensing solution with an emuslifier that renders the solution dispersed within the matrix material. The sensing solution remains suspended in these disperse...

Enhanced crystallographic texture is developed in an alpha or alpha-beta titanium alloy having a dispersion of particles therein, by heating the alloy to essentially the all beta phase range and mechanically hot working the alloy in this range. The mechanical working is preferably accomplished by extrusion, rolling, or forging. The particles are stable during working, and prevent the formation of ...

A power supply circuit for discharge machining comprising a first switching means for supplying a d-c power voltage to a discharge gap between a discharge machining electrode and a workpiece, a first energy consumption circuit having a second switching means provided on the output side of the first switching means, and a second energy consumption circuit having a third switching means provided in ...

The invention relates to a process for the preparation of positive or negative active mass of lead accumulators by using the active mass separated from production-refuse plates and/or the active-mass wastes produced during production. According to the invention when positive active mass is prepared then positive active mass, while when the negative active-mass is prepared then negative active-mass...

Collector compositions for use in froth flotation processes for the beneficiation of mineral values from base metal sulfide ores comprise at least one hydrocarboxycarbonyl thionocarbamate or thiourea compound selected from compounds of the formulas: R<1>, R<2> and R<3> being specified. The processes include the use of the collectors which at pH values below 10.0 exhibit unexpectedly hig...

Collector compositions for use in froth flotation processes for the beneficiation of mineral values from base metal sulfide ores comprise at least one hydrocarboxycarbonyl thionocarbamate or thiourea compound selected from compounds of the formulas: R<1>, R<2> and R<3> being specified. The processes include the use of the collectors which at pH values below 10.0 exhibit unexpectedly hig...

2042590 9102932 PCTABScor01 Process and system for recovering refrigerant from refrigeration systems without substantial contamination of the atmosphere, said system comprising means for removing refrigerant from the system under the vapor pressure of the refrigerant or with aid from a compressor or other pump, conduit means for conveying the refrigerant from the system, and a collapsible bag cons...

In accordance with the present invention, an electrochemical cell is disclosed comprising a metal oxide cathode; an anode/electrolyte mixture which contains a zinc anode material and an aluminum compound additive as an source of aluminum ions (e.g., an aluminum salt). The anode/electrolyte mixture may also contain a source of sulfate ions (e.g., a metal sulfate). The anode/electrolyte mixture can ...

OF THE DISCLOSURE An openable roof includes a plurality of movable roof members. Each of the movable roof members is of a generally sectorial shape in two-dimensional projection. The sectorial shape has a radially outer edge portion and a radially inner edge portion. The outer edge portion of the movable roof member is movably disposed on an outer arcuate support. The inner edge portion of the mov...

An openable roof includes a plurality of rotationally movable roof members and at least one linearly movable roof member. Each of the rotationally movable roof members is of a generally sectorial shape in a two-dimensional projection. The sectorial shape has a radially outer edge portion. The outer edge portions of the rotationally movable roof members are movably disposed on an outer arcuate supp...