Abstract: Metallic halide high-pressure gas discharge lamp whose filling contains elementary arsenic during operation.

Abstract: New and valuable 4-benzofuranyl esters having a good herbicidal action, herbicides containing these compounds as active ingredients, a process for controlling the growth of unwanted plants with these compounds, and a process for their manufacture.

Abstract: The present invention concerns new 5-nitropyrimidine derivatives and their acid addition salts as well as compositions containing them and their use, for selective pre- and post-emergent combating of weeds and for diminishing the growth of lawn, cereals and suckers. The new 5-nitropyrimidines have the formula ##STR1## wherein R.sub.1 is alkyl with 2-7 carbon atoms, alkenyl or cycloalkyl; R.sub.2 is optionally substituted lower alkyl, alkoxy or alkylthio, alkenyloxy or alkenylthio, cycloalkoxy or cycloalkylthio; R.sub.3 is hydrogen, lower alkyl, haloalkyl, alkoxy, alkylthio or dialkylamino.

Abstract: A composition and method for drilling a well into a subterranean formation containing a geothermal fluid utilizing a gas-containing aqueous drilling fluid containing both lignite and a salt of a high molecular weight acrylic polymer.

Abstract: Disclosed is process for the preparation of alumina-containing particles, comprising the steps of (a) mixing an aluminum oxide hydrosol containing a hydrate of alumina or activated alumina and an additive component selected from a high molecular weight natural organic material which is insoluble in aqueous solution up to a temperature of 50.degree. C. and carbon with a solution of hydrolyzable base to form a mixture; (b) introducing the mixture in dispersed form into a water-immiscible liquid having a temperature of from about 60 to 100.degree. C., whereby gel particles are formed; (c) aging the gel particles in the liquid at the temperature and subsequently in an aqueous ammonia solution; (d) recovering the aged particles; and (e) calcining the recovered particles.

Abstract: A process for the production of 1-methyl-3-phenylindans by dimerization of styrenes in the presence of catalysts and of organic compounds which absorb light of from 2000 to 8000 A and which are irradiated with such light. The compounds which can be prepared by the process of the invention are valuable starting materials for the production of dyes and pest control agents.

Abstract: A substantially cylindrical hole is drilled into a support structure, and the end of the hole remote from the point of entry of the drilling tool into the structure is enlarged in its cross-sectional area so as to provide abutment surfaces for spreading portions of a fastening element inserted into the hole subsequently to the drilling thereof. The drilling tool includes a drill shaft, and a drill bit connected to the free end of the drill shaft and having lateral cutting edges. The cutting edges may diverge in direction axially away from the drill shaft and a collar may be provided on the drill shaft which, in cooperation with the inner surface bounding the hole forms a fulcrum for a lever-type angular displacement of the drilling tool for increasing the cross-sectional area of the remote end of the hole.

Abstract: As the bottles go through the bottle washing machines the inside of each bottle is sprayed at various locations at each of which the bottle conveyor travels an arcuate path, the center of which is generally coincident with the center of the rotary spray pipe. The rotary spray pipe is provided with rows of aligned spray nozzles each of which lines up with the neck of a bottle in the conveyor as it passes over the spray area. A header surrounds the pipe at each nozzle location with a segment of the header removed to allow the nozzles to spray the adjacent bottles as the nozzles pass the cutout section. For the remainder of a revolution the nozzle is blanked off by the header. The bottles are always synchronized with the nozzles since the conveyor sprocket rotates with the spray pipe. A backflush pipe is fixed below and communicates with the header so water can be flushed through the nozzles in reverse direction for cleaning.

Abstract: The arrangement is used for continuously cleaning surface-sensitive paper or film in web form. The arrangement may be installed at any point along the path of web travel. The cleaning effect is provided by a ribbon of fibrous nonwoven material which is guided over a suction roller together with the web to be cleaned. The ribbon of fibrous nonwoven material moves in the opposite direction to the web. A highly satisfactory cleaning effect is obtained by the high relative speed between the surface to be cleaned and the web of nonwoven material. The particles of dust and dirt removed from the web are drawn into the suction roller under the effect of the vacuum.

Abstract: Bromine containing telomeric phosphonic acid esters of the formula ##STR1## which are used as flameproofing agent for the preparation of flame-repellent thermoplastic compositions.

Abstract: A semiconductor arrangement comprises a region of a second type of conductivity formed in a semiconductor body of a first type of conductivity from one surface thereof, an insulating layer on this surface defining an opening above the said region and a resistance layer covering the opening in the insulating layer and comprising a metal silicide compound of silicon with a metal from the subgroups of groups V or VI of the periodic system which contain tungsten, molybdenum or tantalum.

Abstract: Contaminated sulfuric acid which may contain water, organic compounds and inorganic salts is converted to almost pure concentrated sulfuric acid by passing the acid through a Pauling plant and distilling the concentrated contaminated acid.Addition of nitric acid improves the decomposition of organic compounds and ammonium salts of the contaminated acid.

Abstract: New, substituted O-(aminosulfonyl)-glycolic amides having a strong herbicidal action, herbicides containing these active ingredients, a process for controlling the growth of unwanted plants with these compounds, and a process for producing these compounds.

Abstract: New and valuable substituted pyrazoles, herbicides containing these compounds as active ingredients, and a process for controlling the growth of unwanted plants with these compounds.

Abstract: The invention relates to special acetals of benzoin compounds which act as photoinitiators, and to a technically simple manufacturing process involving the reaction of an appropriate .alpha.- or .beta.-hydroxyketone with an .alpha.,.beta.-olefinically unsaturated ether in the presence of an acid catalyst. The acetals are particularly suitable for use as photoinitiators in the preparation of photopolymer printing plates.

Abstract: A sewing device for sewing similar workpieces of alternate sizes, the device is provided with means for the positioning control and the insertion of the workpiece cuts to be sewn, into the workpiece clamping holders. To adapt the device for workpieces of other sizes, there are provided adjusting means for the simultaneous displacement of two-piece clamping holders, master cams and the stop dogs of an inserting device.

Abstract: A roller bearing for the shaft of a cement-mixer drum, universally jointed on a stub shaft of a planetary-gear train driving the drum shaft through a gear coupling with arcuate teeth, has an inner race fixed to the drum shaft and an outer race secured to a surrounding transmission housing, this outer race being axially split into two halves each accommodating a set of barrel-shaped rollers. The two sets of rollers are held in respective cages, peripherally offset from each other, and are engaged by toroidal inner surfaces of the two race halves curved about the center of rotation of the universal joint; these race halves extend axially beyond the end faces of the inner race to allow for a swing of more than .+-.3.degree. from a midposition. The outer cage diameter exceeds the smallest diameter of each race half.

Abstract: A water-insoluble particulate composition having controlled slow oil-solubility at temperatures in excess of 350.degree. F. is disclosed. The composition is comprised of solid particles of a homogeneous mixture of (1) polyethylene, ethylene-vinyl acetate copolymer containing about 15 to 30 weight percent vinyl acetate, or admixtures of these polymers; (2) a polyamide having a melting point of between about 400.degree. F. and 460.degree. F.; and (3) a softening agent such as a long chain aliphatic diamide having a melting point between about 280.degree. F. and 300.degree. F., or a polyterpene resin having a melting point of between 230.degree. F. and 275.degree. F. Also disclosed is a method of using this particulate composition in well drilling and treating operations where formation temperatures of 350.degree. F. or above are encountered.

Abstract: The present invention relates to methods for the regulation of plant growth, especially for fruit abscission, acceleration of ripening and latex discharge. The active substances used in these methods correspond to the formula ##STR1## wherein X is chlorine or bromine, Y represents chlorine and R.sub.1 and R.sub.2 are both methyl, or the radical --OR.sub.3 and each of the radicals R.sub.1, R.sub.2 and R.sub.3 independently represent alkyl radicals, or the group --COR.sub.4, wherein R.sub.4 stands for an alkyl radical.

Abstract: The present invention relates to methods for the regulation of plant growth, especially for fruit abscission, acceleration of ripening and latex discharge. The active substances used in these methods correspond to the formula ##STR1## wherein X is chlorine or bromine, Y represents chlorine and R.sub.1 and R.sub.2 are both methyl, or the radical --OR.sub.3 and each of the radicals R.sub.1, R.sub.2 and R.sub.3 independently represent alkyl radicals, or the group --COR.sub.4, wherein R.sub.4 stands for an alkyl radical.