DECANTER CENTRIFUGE FOR THICKENING AT HIGH RATES of the Invention A decanter centrifuge is provided with a rotatable bowl and a coaxially-mounted conveyor which is adapted for rotation at a differential speed with respect to the bowl. The conveyor includes a central hub extending for at least one portion of the longitudinal length of the conveyor. A series of radially-extending ribs which transver...

PROCESSING AIR AND STABILIZER FOR POLYVINYLIDENE CHLORIDE POLYMERS A vinylidene chloride film with improved processing properties such as good thermal stability, enhanced extrudability and reduced stickiness to metal surfaces is made from a vinylidene chloride polymer or copolymer and up to about 2.0% by weight of a soap of a fatty acid as a processing aid.

A semiconductor resistance element of one electrical conduction type comprises: a semiconductor region including a first impurity of opposite electrical conduction type and second impurity of one electrical conduction type, wherein said second impurity is more heavily introduced so that a predetermined resistance is obtained; and electrode regions provided on both ends of said semiconductor region...

Compounds represented by the general formula (I), wherein R<1> is a saturated or unsaturated, straight or branched hydrocarbon radical [wherein the number of carbon atoms in the longest straight chain of this hydrocarbon radical ranges from three to seven], or a radical of the formula -(CH2)n-Y [in which n is an integer from 0 to 4, when Y is a cyclohexyl radical, or n is an integer from 2 ...

A laser device, if directly amplitude modulated, exhibits an unwanted frequency modulation which broadens its emission spectrum. The unwanted frequency modulation is eliminated by carrying out a conversion of the modulated optical signal wavelength, using a semiconductor optical amplifier as a converter and another nonmodulated laser as a conversion signal generator. Wavelength conversion takes pl...

The present invention pertains to a perfusion cannula for insertion into an artery. The perfusion cannula comprises a main channel fluidly connected to an intra-aortic portion of the cannula. The main channel is also adapted for fluid connection to an aortic perfusion line of a cardiopulmonary bypass. The intra-aortic portion has a proximal end adjacent the main channel and a distal end remote fro...

In a mist-spouting type drilling device having a mist passage (5 alpha ) extending through a hollow drill (5) and a hollow shaft (30), a slender throat nozzle (58) is disposed inside the drill, and a slender anti-counterflow nozzle (40) having an orifice portion (40a) is disposed inside the hollow nozzle (58). The anti-counterflow nozzle (40) is connected to a mist supply pipe (20) through a joint...

A low noise battery charger includes a rectifier to convert AC line voltage to a rectified sinusoidal voltage that is applied to a primary winding of a transformer. Another rectifier coupled to a first secondary winding applies a charging current to a battery. A switch coupled in series with the primary winding controls current therein. A rectifier coupled to another secondary winding produces a b...

The alkaline earth metal/potassium acetate according to the invention comprises from 14 to 19 % by weight of calcium (Ca<++>), from 0 to 1 % by weight of magnesium (Mg<++>), from 11 to 16 % by weight of potassium (K<+>), from 62 to 71 % by weight of acetate (CH3COO<->), from 0 to 7 % by weight of water, and from 0 to 2 % by weight of water-insoluble components. It is prepared by re...

The alkaline earth metal/sodium acetate according to the invention comprises from 18 to 22 % by weight of calcium (Ca<++>), from 0 to 1 % by weight of magnesium (Mg<++>), from 4 to 7 % by weight of sodium (Na<+>), from 66 to 75 % by weight of acetate (CH3COO<->), from 0 to 7 % by weight of water, and from 0 to 2 % by weight of water-insoluble components. It is prepared by reacting ...

The alkaline earth metal/potassium acetate according to the invention comprises from 14 to 19 % by weight of calcium (Ca<++>), from 0 to 1 % by weight of magnesium (Mg<++>), from 11 to 16 % by weight of potassium (K<+>), from 62 to 71 % by weight of acetate (CH3COO<->), from 0 to 7 % by weight of water, and from 0 to 2 % by weight of water-insoluble components. It is prepared by re...

The alkaline earth metal/sodium acetate according to the invention comprises from 18 to 22 % by weight of calcium (Ca<++>), from 0 to 1 % by weight of magnesium (Mg<++>), from 4 to 7 % by weight of sodium (Na<+>), from 66 to 75 % by weight of acetate (CH3COO<->), from 0 to 7 % by weight of water, and from 0 to 2 % by weight of water-insoluble components. It is prepared by reacting ...

Alkaline earth metal potassium acetate, a process for its preparation and its use The alkaline earth metal potassium acetate according to the invention comprises 14 to 19 % by weight of calcium (Ca++), 0 to 1 % by weight of magnesium (Mg++), 11 to 16 % by weight of potassium (K+), 62 to 71 % by weight of acetate (CH3COO-), 0 to 7 % by weight of water and 0 to 2 % by weight of water-insoluble compo...

Alkaline earth metal sodium acetate, a process for its preparation and its use The alkaline earth metal sodium acetate according to the invention comprises 18 to 22 % by weight of calcium (Ca++), 0 to 1 % by weight of magnesium (Mg++), 4 to 7 % by weight of sodium (Na+), 66 to 75 % by weight of acetate (CH3COO-), 0 to 7 % by weight of water and 0 to 2 % by weight of water-insoluble components For ...

Novel titanium (IV) chelates and their use in polysiloxane materials Reaction products of titanates with .beta.-dicarbonyl compounds and citrates and their use in one-component RTV silicones.

Compounds of formula (I) : [wherein: A represents a group (IIa), (IIb) or (IIc) : R<1> is alkyl, alkenyl, cycloalkyl or a group of formula R<4>-Y-R<5>-, where: R<4> is hydrogen, alkyl, or cycloalkyl, R<5> is a single bond or alkylene, and Y is oxygen, sulphur or imino group; R<2> is hydrogen, halogen, Optionally substituted alkyl, optionally substituted alkenyl, optionally ...

Compounds of formula (I): (I) ¢wherein: A represents a group (IIa), (IIb) or (IIc): (IIa) (IIb) (IIc) R1 is alkyl, alkenyl, cycloalkyl or a group of formula R4-Y-R5-, where: R4 is hydrogen, alkyl, or cycloalkyl, R5 is a single bond or alkylene, and Y is oxygen, sulfur or imino group; R2 is hydrogen, halogen, optionally substituted alkyl, optionally substituted alkenyl, opti...

An induction heating apparatus for utilizing electromagnetic induction to heat a workpiece. The apparatus includes a pair of heating coil units disposed in spaced-parallel relation to permit transportation of the workpiece between the heating coil units. Each of the heating coil units includes a main heating coil and an auxiliary heating coil disposed at a position adjacent to the main heating coi...

An apparatus for controlling the power supplied to an inductive load, such as an induction furnace, by an inverter power supply having switch means for generating an alternating polarity voltage across a load comprises means (120) for monitoring the current (100) in the load and generating a signal (102) representative of zero crossings of the load current, and means for controlling the operation ...