A measuring tool for producing geophysical measurements within a borehole comprises a crawler belt, at least a portion of which constitutes a support for a transducer. The crawler belt is continuously displaced within the bore hole by means of a suspension cable and guide pulley in cooperating relation with spiked shoes and retaining plates for maintaining at least the transducer-supporting portio...

Apparatus for control of the heat transfer between a circulating bed of solid particles and a heat exchanger (6) located inside a fluidization enclosure (1) supplied with solid particles and connected to a device for recovering (4) and recycling (5) the particles into the fluidized bed. The heat exchange coefficient of the exchanger (6) is adapted at each moment to the heat transfer requirements o...

The present invention relates to a process for the manufacture of a liquid absorbing pad comprising a liquid absorbing particulate material, whereby two sheetings (1,3) one of which at least being water permeable, and one of which at least being provided with a polymer being capable of fusing the sheetings (1,3) together while heated, fusing the sheetings (1,3) together in a longitudinal direction...

The present invention relates to a process for the manufacture of a liquid absorbing pad comprising a liquid absorbing particulate material, whereby two sheetings (1,3) one of which at least being water permeable, and one of which at least being provided with a polymer being capable of fusing the sheetings (1,3) together while heated, fusing the sheetings (1,3) together in a longitudinal direction...

Novel azolylmethylcyclopropyl derivatives of the formula in which R represents halogen, alkyl, optionally substituted phenyl or the group -Y-R<2> in which Y represents oxygen, sulphur, SO or SO2 and R<2> represents optionally substituted phenyl, R<1> represents hydrogen, alkyl or acyl, X represents nitrogen or a CH group, Z represents halogen, alkyl having 1 to 4 carbon atoms, alko...

The present invention provides a method for inhibiting corrosion and elastomer swelling and degradation caused by alcohol and alcohol-containing fuels and for increasing lubricity of alcohol or alcohol-containing fuels, comprising the step of adding to alcohol or alcohol-containing fuels, a fuel additive comprising one or more reaction products of a carboxylic acid or acid chloride selected from t...

A method of optimizing the yield of a vanadium-phosphorus catalyst during the oxidation of butane to maleic anhydride, which comprises establishing the temperature at which the catalyst provides the desired percentage conversion and yield of maleic anhydride with the established feed composition and the maintaining that temperature by continuously introducing an amount of a suitable phosphorus com...

A novel hexa-cyclic compound, a derivative of camptothecin, of the general formura: The compound is prepared from an aminoketone compound and a pyranoindolizine compound through Friedlaender reaction. It has an excellent antitumour activity and a high degree of safety, and can be applied as an antitumour medicine for curing tumors of various kinds.

The parallel arm system (6,7) has a load bearer (9) so positioned that the load (10) is located in front of the arms, facilitating exchange of load objects. The system is hydraulically operated (4).

Pictures are fitted on the three sides of each bar so that with them in a common starting position each displays a separate picture. After rotation through 120 deg. they each display a second picture. Further rotation through the same angle provides a third picture on display. A final rotation brings the bars back to their starting position, with the first picture being shown. - Rotation is produc...