Abstract: A catalyst component useful in propylene polymerization in combination with a dialkyl aluminum halide cocatalyst comprises the product of reaction of TiCl.sub.3 which is substantially free of extraneous halide with a selected electron donor compound which is dissolved in a liquid hydrocarbon solvent in which the TiCl.sub.3 is dispersed. The electron donor compound is selected from certain organic acid esters, hindered phenolic compounds and silyl esters.The catalyst of the invention provides increased activity, molecular weight control, increased isotacticity of propylene polymer products and prevents catalyst feed line pluggage, among other advantages.

Abstract: A weaving method and a leno heald system for producing a 3-dimensional woven fabric which includes a plurality of stacked single-ply webs (A.sub.1, A.sub.2, A.sub.3, A.sub.4) each comprising a weft yarn (2) which cross-bridges between warp yarns (1) arranged in rows in each web. The adjacent webs are connected together by a second warp yarn (3) which either cross-links to one of the warp yarns (1) at a cross-linking location or to the weft yarn adjacent the cross-linking location. The successive cross-linking locations are spaced in the weaving direction by at least one weft yarn course.

Abstract: A method and apparatus including a reaction chamber interposed in a polyvalent metal redox solution flow path between an absorber chamber and an oxygenation chamber, including one or more oxygenation stages, for contact in the reaction chamber of H.sub.2 S-laden catalytic polyvalent metal redox solution form the absorber chamber with highly oxidized polyvalent metal redox solution from the last oxygenation stage to accomplish oxidation of the dissolved H.sub.2 S species by interaction with the oxidized redox catalyst essentially in the absence of gaseous dissolved oxygen. The highly oxidized polyvalent metal redox solution, including Fe.sup.+3 or V.sup.+5, contacts the H.sub.2 S-laden solution from the absorber chamber for reoxidation of the dissolved HS.sup.-, S.sup.= and any of the polyvalent metal sulfur compounds (presumably a chelated iron sulfide or a vanadium sulfide), to avoid formation of sulfate or thiosulfate salts which reduce the yeild of sulfur and build up in the solution.

Abstract: An electrode endotracheal tube for detecting electromyographic signals in the laryngeal muscles and comprising electrode wires running in a direction parallel to the central axis of the endotracheal tube. Each wire is insulated from electrical contact along a first portion of its length and is exposed along a second portion. The exposed portion is at a location on the tube which permits the exposed portion to contact the adjacent laryngeal muscles when the endotracheal tube is inserted into the trachea.

Abstract: The in situ formation of a supported active metal phthalocyanine catalyst is disclosed. The supported metal phthalocyanine catalyst is useful in sweetening sour petroleum distillates containing mercaptans.

Abstract: A solid catalyst component, a method of making the same, a catalyst system incorporating the solid catalyst component, and a method of polymerizing one or more 1-olefins using the catalyst system are disclosed wherein the catalyst component is prepared by contacting, in the presence of an inert liquid hydrocarbon, silica, a soluble organomagnesium compound, an SiCl.sub.4 magnesium fixing agent, an alcohol, TiCl.sub.4, a carboxylic acid derivative, followed by extraction with a TiCl.sub.4 -containing extraction liquid. The inventive catalyst system allows ready control of product molecular weight by control of hydrogen concentration in the reactor, and allows the production of high MI or MF polymers at high productivities.

Abstract: A system is disclosed for steering a missile by means of gas jets, comprising a gas generator connectable to at least a pair of lateral nozzles via rotary valving means, movable under the action of drive means and controlling the passage of the gases through said nozzles whereinwith each nozzle is associated an individual rotary valving member;each valving member is controlled in rotation by the piston of a jack, one chamber of which receives a part of the gas generated by said gas generator, the position of said piston being controlled by controlling the flowrate of said gas through said chamber;the chambers of said jacks, opposite those receiving said gas flows, are connected together by a coupling circuit containing a pressurized incompressible fluid; andthe volume of said pressurized incompressible fluid is chosen so that one of the valving members may be in the completely open position of the associated nozzle, whereas all the other valving members completely close the nozzles which correspond thereto.

Abstract: A system for generating on board an aircraft an alarm signal should an anomaly occur during take-off includes: a circuit for delivering signals representing the theoretical and real accelerations of the aircraft at a given moment; a calculator for calculating the expression:D.sub.2 =D.sub.2 t+(Vat.sup.2 -V.sub.12 t.sup.2 /2 .gamma..sub.1 tin which: .gamma..sub.1 t is the real acceleration of the aircraft at the moment t, V.sub.11 t is its real speed, Vat is its theoretical speed, D.sub.1 t is the real distance covered by the aircraft at the moment t, and D.sub.1 is the real forecast distance covered by the aircraft when V.sub.11t shall equal Vat, as well as the ratio:D.sub.1 /Datin which Dat is the theoretical distance covered by the aircraft at the moment t; a comparator for comparing the ratio D.sub.

Abstract: This disclosure relates to an ultrapure water producing system having a primary ultrapure water system including a pretreatment process into which raw water is fed, and a primary ultrapure water device connected to the outlet of the pretreatment process. A reservoir is connected to the outlet of the primary ultrapure water device. A secondary ultrapure water system includes a pump having an inlet connected to the reservoir, a polisher connected to the outlet of the pump, and first use point connected to the outlet of the polisher and to the reservoir. A branch line is connected to the outlet of the polisher and has a heating and deaerating part connected thereto, and a high-temperature second use point is connected to the outlet of the heating and deaerating part.

Abstract: A dome forming sliding gate filling composition for teeming ladles comprises chrome ore sand, quartz sand, and fine grained carbon black as an additive which improves dome formation or increases pourability.

Abstract: A process for the preparation of linear olefins which comprises polymerizing ethylene in a hydrocarbon solvent at a temperature of 50.degree.-150.degree. C. in the presence of a catalyst comprising a zirconium metal compound, an organometallic compound wherein the metal is selected from the group consisting of zinc, magnesium and aluminum, and a basic salt of a carboxylic acid which forms a fine suspension or a homogeneous solution in the hydrocarbon solvent wherein the ratio of the salt equivalents to the moles of zirconium compound is from above 0 to about 4.0.

Abstract: A catalytic polyvalent metal redox solution can be recovered and re-used in a catalytic polyvalent metal redox solution H.sub.2 S-removal, sulfur production process by interposing a closed loop evaporator/condenser process and apparatus in the sulfur washing/filtering/recovery process and apparatus so that wash water used to purify the sulfur, and any polyvalent metal redox solution recovered from the sulfur melter are fed to an evaporator to concentrate the redox solution to a concentration capable of effective absorption of H.sub.2 S, and the water evaporated in the evaporator is condensed as pure water for use in washing and/or filtering the recovered sulfur.

Abstract: A method of providing the surface area of a substrate with a first zone which is solvent-wettable and a second zone which is solvent-non-wettable, and which is particularly suitable for application to the printheads and nozzle plates of drop-on-demand ink jet printers or like products where the spacing between zones of the same kind can be as little as just tens of microns, and wherein the solvent-non-wettable zone displays excellent abrasion resistance and resistance to solvents, is virtually non-wettable by a wide range of solvents and bonds well even to plastics substrates, comprises:(i) providing a surface having good solvent wettability at least over that part of the area of the substrate which is to form said first zone;(ii) providing said area with a first layer which comprises siloxic material which bonds to the substrate and which is in contact with the substrate over at least that part of the area which is to form said second zone;(iii) providing said area with an overlayer comprising organic fluoro

Abstract: Disclosed are DNA sequences bonding deletion, substitution and/or addition analogs of the E. coli enzyme, chorismate mutase/prephenate dehydratase (CMPD). Preferred expression products include [des-Gln.sup.307, des-Ala.sup.308, des-Gly.sup.309, des-Ala.sup.310 ]CMPD; [Leu.sup.306 ]CMPD; [des-Thr.sup.304, Lys.sup.305, des-Gln.sup.306 ]CMPD; and [Cys.sup.309 ]CMPD display enzymatic activity of the wild type enzyme but are more resistant to inhibition in the presence of phenylalanine.

Abstract: A precooked-food warmer for baby and diet food which is contained in an openable, rigid container comprises a housing that can be fixed to the container and in which is located an electrical heating unit. The unit is equipped with connectors such that energy is supplied to the unit and with a heat-conducting means to transfer heat from the heating unit to liquid or semi-liquid food in the container. A transfer member of a rigid heat-conducting material that is immersible in the food and is detachable from the heating unit is also provided. Preferably, the transfer member defines at least one sword-like section of large surface area that is immersible in the food.

Abstract: Prior power converters have utilized discrete components mounted on circuit boards of differing designs. Failure of one or more of the components requires testing each component to determine which is faulty. The faulty component must then be replaced. This results in significant down time for the inverter and can require stocking a large number of specialized boards. In order to overcome these problems, an inverter is assembled using modular circuit boards. Each circuit board includes components mounted on a multilayer substrate and a heat exchanger which cools high power components. When a malfunction of a component occurs, the entire board containing the failed component may be readily replaced so that inverter down time is minimized. The use of modular circuit boards also reduces stocking requirements and inventory costs.

Abstract: A microbial shuttle vector is disclosed which is independently replicative in bacterial cells and mammalian cells and includes in its DNA sequence bacterial plasmid sequences allowing selection and replication in bacterial cells, an SV40 viral origin of replication, and either an SV40 functional "early gene" promoter and functional "early gene" terminator or an SV40 functional "late gene" promoter and functional "late gene" terminator, the vector having a unique restriction endonuclease enzyme recognition site between the promoter and terminator for insertion of an exogenous gene. The presence of restriction endonuclease enzyme recognition sites facilitative of insertion of a viral functional "late gene" into the "early gene" promoter/terminator vector in a single step allows for conversion of the shuttle vector into a lytic vector of an exogenous gene.

Abstract: An air-cooled overhead-valve engine comprises a cooling fan connecting to one end portion of crankshaft and surrounding with fan casing, a combustion air intake port provided in the direction of downstream side of cooling air, and push rods for driving a cam arranged in opposite side to said intake port with relate to a center of cylinder. The engine can be used suitable to power lawn mowers and the like.

Abstract: A composition and method of absorbing animal dross. Discrete particles of a composition comprising a water-swellable bentonite clay absorb animal dross and related liquids, and simultaneously agglomerate into a sufficiently large and stable mass therefore permitting physical separation and removal of the wetted mass of particles from unwetted particles of the composition. Removing the wetted and agglomerated composition particles from the remaining unwetted composition reduces or eliminates offensive odors produced by dross-soaked particles.