Abstract: The process comprises a cold absorption step 2 for removing acid gas from natural gas using a solvent phase at a pressure P.sub.2 which delivers a purified gas 5; a step for depressurizing and separating resultant acidic solvent phase containing hydrocarbons (lines 4, 11), at a pressure P.sub.12 which is lower than pressure P.sub.2 in a column-heat exchanger 12 which delivers a purified gaseous effluent 13 overhead and a further solvent phase at the bottom (line 17) which is enriched in hydrogen sulphide; and a solvent phase regeneration step carried out in a distillation column 18 at a pressure P.sub.18 and no higher than pressure P.sub.12. A gas 29 containing essentially hydrogen sulphide which is depleted in hydrocarbons is recovered from column 18 and is a suitable feed for a Claus plant for eliminating H.sub.2 S. The regenerated hot solvent phase 20 indirectly exchanges heat with the cold acidic solvent phase from absorber 2 or separator 6. It is then recycled to the absorbent after cooling.

Abstract: Described is catalyst that is active and selective for reducing to molecular nitrous oxides contained in a superstoichiometric medium of oxidizing agents, said reduction being conducted with agents such as carbon monoxide, hydrogen, hydrocarbons, alcohols, ethers, and other oxidized organic compounds and also with ordinary fuels such as gasolines, gas oils, liquefied gases, and compressed natural gases, whereby said catalyst comprises:at least one refractory inorganic oxide, including alumina;at least one element (A) that belongs to the group of rare earths;at least one element (B) that belongs to groups VIB, VIIB, VIII and IB of transition metals;at least one metal (C) that belongs to the group of precious metals of the platinum family, and optionallyat least one element (D) that belongs to group IIA of alkaline-earths;at least a portion of elements (A) is combined with alumina to form at the surface of the latter a microlayer of rare-earth aluminate.

Abstract: A pigment preparation for anti-corrosion coating materials, comprising(i) 3-40% by weight of a monomeric or polymeric, metal-free or metal-containing chelate-forming compound, preferably a phthalocyanine,(ii) 3-40% by weight of a material in flake form, preferably mica, and(iii) 25-80% by weight of a hydroxide ion-binding material, preferably a metaphosphate, di- or triphosphate. In a further embodiment, the pigment preparation additionally contains 5-65% by weight of a conductive pigment.

Abstract: An aqueous suspension-type microcapsule insecticide composition which is obtained by emulsifying a hydrophobic admixture of liquid pyrethroid insecticide or a pyrethroid insecticide and a high boiling point solvent, preferably an alkyl ester of phthalic acid in which the alkyl group has 8-13 carbon atoms to form particles of a suitable size in the presence of an anionic water-soluble polymeric surface active agent and polycondensating melamine-formaldehyde or a derivative thereof on the surface of the said emulsified and dispersed particles, and a process for producing the composition. This composition exhibits stable insecticidal activity over a prolonged period with noticeably reduced toxicity to aquatic life.

Abstract: Agents, containing at least one compound having antiprogestational activity and at least one compound having anti-estrogenic activity, are suitable for the treatment of hormone-dependent tumors.

Abstract: The invention relates to complex compound as well as their salts consisting of at least one metal ion and one complexing agent of general formula I ##STR1## in which Z.sup.1, Z.sup.2 and s have different meanings, as well as their use for the production of agents for radiation therapy and for NMR diagnosis and diagnostic radiology, especially for contrasting the hepatobiliary system. Further, the invention relates to a process for the production of these compounds and agents.

Abstract: The invention relates to oligonucleotides which are suitable for use as nucleic acid probes or as primers for the detection of Enterobacteriaceae, in particular of pathogenic Enterobacteriaceae, such as, for example, Salmonella sp. The oligonucieotides according to the invention are selected from the salmolysin-like DNA region and possess a sequence according to one of the formulae IIIa to IIIh, or a corresponding complementary sequence:______________________________________ GAA TAT ATT GCG TTA GAT TAA T IIIa (SEQ ID NO:19) AAA CTG AAG CTA CAG GTG CC IIIb (SEQ ID NO:20) CTT AGC AAG CTA ATT ATA AGG IIIc (SEQ ID NO:21) GGC ACG GTT GGT GCG CAT TTG G IIId (SEQ ID NO:22) GCC ATA CGT GTG GCC ATG TGA IIIe (SEQ ID NO:23) GGC GTG TGG TCA GTA ACC TGA IIIf (SEQ ID NO:24) TTG CTG GCC AGC ACG ACA CG IIIg (SEQ ID NO:25) and GAA TCA TCA CCG CCC TGA AT IIIh (SEQ ID NO:25).

Abstract: To recover these noble products consisting of acrylic acid monomer, acrylic ester monomers and alcohols, a thermal cracking is performed in the absence of catalyst on a mixture of heavy distillation residues originating, on the one hand, from the manufacture of acrylic acid and, on the other hand, from the manufacture of the esters, the light fraction originating from the dissociation reactions is continuously vaporized during the cracking operation and this light fraction is distilled in order to recover, after condensation, the required products.

Abstract: A method for the improvement of performances involves a drilling model wherein the model takes account of the effects of the destruction of a rock (2) by a cutter (1) fastened to a bit body (3) driven in rotation and the effects of the removal of rock cuttings by a fluid, by calculating a material balance from the production of cuttings by the cutter that has penetrated the rock by a depth .delta., a bed of cutting of thickness l, a fluid strip of thickness h between the bed of cuttings and body (3), the fluid strip having a cuttings concentration c.

Abstract: The present invention concerns a catalyst comprising a porous organic or mineral support, preferably silica, and an acidic phase containing B(OSO.sub.2 CF.sub.3).sub.3 and at least one acid selected from the group formed by sulphuric acid (H.sub.2 SO.sub.4) and trifluoromethane sulphonic acid (CF.sub.3 SO.sub.3 H), the support having been impregnated by said acidic phase, said catalyst being such that it is constituted essentially by particles with an average diameter of between 0.1 and 150 .mu.m, such that the support, prior to its impregnation with said acidic phase, has a total pore volume of between 0.5 and 6 cm.sup.3 per gram and said catalyst being characterized in that said acidic phase contains:between 0.1 and 70% by weight of B(OSO.sub.2 CF.sub.3).sub.3 ;between 0 and 90% by weight of H.sub.2 SO.sub.4 ;between 0 and 90% by weight of CF.sub.3 SO.sub.3 H.

Abstract: Partially fluorinated benzene derivatives of the formula I ##STR1## in which R, A.sup.1, A.sup.2, Q, Y, L.sup.1, L.sup.2, L.sup.3 and m are as defined in claim 1,are suitable as components of liquid-crystalline media.

Abstract: The invention relates to diethylenetriaminepentaacetic acid monoamide derivatives, their complexes and complex salts, containing gadolinium, dysprosium, iron or manganese, pharmaceutical agents containing these compounds, their use as contrast media and process for their production.

Abstract: The process and apparatus are based on a triple-column system, having at least a high-pressure column (7), a medium-pressure column (8) and a low-pressure column (9). Feed air (1) is compressed to a first pressure (2). A first partial stream (101, 103, 104) of the resultant air feed (3) is sent into high-pressure column (7) after it has been compressed to a second pressure (5, 102), which is at least equal to the operating pressure of the high-pressure column (7). A second partial stream (201, 202) of the compressed air feed (3) is fed into the medium-pressure column (8). A third partial stream (301, 303, 304) of the compressed air feed (3) is engine-expanded (305) and then fed (306) into the low-pressure column (9). Fractions (18; 26) from the high-pressure column (7) and the medium-pressure column (8) are introduced at least partially into low-pressure column (19, 20; 28, 29). Nitrogen-enriched top fractions (10; 21) from high-pressure column (7) and medium-pressure column (8) are condensed (11; 22).

Abstract: A method of using cavitate- or clathrate-forming host/guest complexes for the preparation of contrast media in ultrasonic examination is provided. The host/guest complexes have a host which dissolves in a liquid carrier, releasing the guest (inert gas). With such contrast media, it is possible to diagnose blood and its flow conditions in the heart, and other organs, such as the myocardium, liver, spleen, and kidneys. Other internal systems such as the urinary ducts, the gastrointestinal tract, joints, and eyes can also be imaged.

Abstract: Alkyl-benzoylguanidines of the formula I ##STR1## wherein R.sup.1, R.sup.2 and R.sup.3 have the meanings given, and physiologically acceptable salts thereof show antiarrhythmic properties and act as inhibitors of the cellular Na.sup.+ /H.sup.+ antiporter.

Abstract: A process for the preparation of 3-chloropropionic acid consists especially in simultaneously introducing hydrochloric acid gas and acrylic acid at a molar ratio of 0.7:1 to 1.3:1 into a sediment consisting of 3-chloropropionic acid optionally diluted with water or with an aqueous hydrochloric acid solution.

Abstract: The use of a benzylidenenorcamphor compound of the formula I ##STR1## wherein Phe is a phenyl group which is unsubstituted or substituted by 1 to 5 hydroxyl, alkyl or alkoxy groups having 1 to 10 C atoms, andn is 1 or 2.as sunscreen filters,and also novel compounds of the formula I, their preparation and use as UV filters, in particular in cosmetic or pharmaceutical preparations.

Abstract: Novel compounds of the formula I ##STR1## in which --Y--Z--, R.sup.1, R.sup.2, R.sup.3, R.sup.4 and R.sup.5 have the meanings as stated in the specification, and their salts show endothelin receptor antagonist properties.

Abstract: A data fusion workstation apparatus and method utilizes algorithms and can be used for applications such as, e.g., hydrogeological modeling, steady-state hydrological flow modeling, transport uncertainty determination, flow/transport fusion, oil reserve management, water supply development, geo-technical engineering projects, and management decision optimization. The invention uses a spatial continuity model which is extended to 3D and equations are provided for computation of the spatial AR coefficients from a desired covariance function. The data fusion workstation provides more robust optimization iterations by use of an algorithm that includes Trust Region or Step Halving methods to limit the Gauss Newton step in solving non-linear least squares problems. Measurement biases and error parameters, and parameters which define a hydrological flow model can be included in the common set of estimated states.

Abstract: A pellicle for a mask or substrate including a frame having one end surface and another end surface and a membrane extended over the frame on the one end surface side. A channel is formed in the other end surface of the frame. The channel is filled with a layer of a tackifier capable of expanding upon heating and/or light irradiation such that the tackifier layer does not protrude outward beyond the other end surface of the frame in an unexpanded state, but protrudes outward beyond the other end surface of the frame when expanded. No liner is attached to the tackifier layer.