Abstract: A separate phase of alumina is the matrix in which a separately prepared silica alumina is dispersed in the mixture of aqueous gels, which mixture is spray dried, and the solids calcined at about 1350.degree. F for about 3 hours. From about 0.001% to about 0.1% iron is impregnated into the support. Hydrocarbonylation of pentene-1 over such iron-containing catalyst provides hexanol and hexanal with an attractive combination of activity, selectivity, and stability for the catalytic process, the iron remaining on the support after repeated leaching by liquid product.

Abstract: An infant grows rapidly enough that the distance between the heart and the location for the implantation of a cardiac pacer can change during the few years between surgical investigations of the implanted apparatus. The lead connecting the pacer with the heart follows a large spiral path around the pacer so that the spiral can tighten to a smaller spiral to accommodate the greater distance between the heart and the pacer as the infant grows. Such spiral portion of the lead is within a plastic bag permitting such contraction of the spiral without the lead adhering to tissue. The association of the plug at the end of the lead with the cylindrical socket in the end face of the pacer helps to direct the lead toward its initial large spiral path. Such socket is encapsulated in a plastic shield at one of the four corners of the two side faces of the pacer. Adequate battery life is achieved by one or more cells having the combination of a lithium anode and thionyl chloride-containing electrolyte.

Abstract: Threads are interlaced with thermoelectric wires to provide a woven cloth in tape form, there being an intermediate layer of heat radiation reflecting material (e.g., aluminum foil) insulated electrically from said wires, which are of opposite thermoelectric polarity and connected as a plurality of thermocouples.

Abstract: In a thermoelectric generator, a component comprises a ceramic insulator, having over limited areas thereof, each area corresponding to a terminal end of thermoelectric wires, a coating of a first metal which adheres to the insulator, and an electrical thermoelectric junction including a second metal which wets said first metal and adheres to said terminal ends but does not wet said insulator, and a cloth composed of electrically insulating threads interlaced with thermoelectric wires.

Abstract: A new, solid catalyst suitable for the hydroformylation of low molecular weight olefins is disclosed. The catalyst composition is a hydrido-cobalt or nickel carbonyl-Group VA electron donor ligand complex on a solid, acidic, silica-based support. Preferred electron donor ligands are phosphines and tertiary amines. A preferred catalyst support contains amorphous silica-alumina and alumina.

Abstract: A new solid catalyst suitable for the hydroformylation including hydroxyhydroformylation, of low molecular weight olefins is disclosed. The catalyst composition is a hydrido-cobalt or nickel-carbonyl-Group VA electron donor ligand-platinum-group metal complex on a solid, porous, acidic, silica-based support.

Abstract: A cylindrical casing has a central shielded capsule of radioisotope fuel. A plurality of thermonuclear modules are axially arranged with their hot junctions resiliently pressed toward the shield and with their cold junctions adjacent a transition member having fins radiating heat to the environment. For each module, the assembly of transition member and fins is hinged to the casing for swinging to permit access to and removal of such module. A ceramic plate having gold layers on opposite faces prevents diffusion bonding of the hot junction to the shield.

Abstract: An electrical generator having an Isotopic Heat Capsule including radioactive fuel rod 21 as a primary heat source and Thermoelectric Modules 41 and 43 as converters. The Biological Shield for the Capsule is suspended from Spiders at each end each consisting of pretensioned rods 237 and 239 defining planes at right angles to each other. The Modules are mounted in cups 171 of transition members 173 of a heat rejection Fin Assembly whose fins 195 and 197 extend from both sides of the transition member 173 for effective cooling.

Abstract: Laying floor tiles is more convenient because the floor tiles are provided with tongues which can be fitted readily into grooves in adjacent tiles because the depth of each groove is less than the magnitude of the portion of a tile which is overhanging a portion of the adjacent tile. Such overhanging and underfitting relationships supplement tongues along adjacent sides into grooves of two adjacent tiles. Peripheral floor tiles can be anchored, but central area tiles can be free from the conventional adhesion to the subflooring. Venting for moisture equilibration between the atmosphere and a sub-flooring such as a concrete slab is achieved because of the absence of adhesive between vertical walls of adjacent tiles.

Abstract: The severity of oxidation conditions in each of two stages is regulated so that the concentration of metatoluic acid in the liquid does not exceed 2 weight per cent in the first stage and does not exceed 0.4 weight per cent in the second stage. Total impurities and intermediate aromatic oxidation products are thus sufficiently low that the particles of isophthalic acid which grow in the slurry of reaction mixture in acetic acid do not contain an excessive amount of impurities. The flow rates of feed, interstage slurry, and product slurry as expressed in mols of aromatic components per hour are approximately equalized and regulated as a part of the monitoring to assure compliance with such oxidation severity standards, both stages being in the 100.degree.-130.degree.C. range.

Abstract: In a plant for uranium enrichment using a cascade of ion exchange beds, each bed operates more efficiently because an annular chamber is rotated about a stationary annular ion exchange bed at a speed corresponding to the speed of migration of a region so that, with respect to such rotating chamber, each of the regions of a system remains substantially stationary. An aqueous solution of ferric chloride is pumped to the ferric region and flows forwardly to the forwardly moving rear boundary of the uranium region.

Abstract: An improved spacer grid for a nuclear fuel assembly comprising fuel rods in a matrix wherein each rod is adapted to be enclosed by a spacer "cell" for positioning thereof relative to adjacent rods in the fuel assembly.

Abstract: A method of making a high temperature and stress resistant body of desired porosity in whose practice a green porous body (FIGS. 4, 5, 9, 10) of higher than the desired porosity is formed by compacting different size fractions of spherical particles (A, 23, 27 FIGS. 4, 5) or by winding fine cold-drawn wire (53 FIG. 9) or mesh of fine cold-drawn wire (73 FIG. 10) on a mandrel (51 FIG. 7; 71 FIG. 10). The green body is cemented into a rigid body and at the same time its porosity is decreased to the desired magnitude by depositing cementing material (H5 FIG. 11, 61 FIG. 9, 77 FIG. 10) in the pores (25 FIGS. 5 and 6; 55 FIG. 9) from a gas. Typically a body of tungsten is formed by reducing a tungsten halide in the pores with hydrogen.

Abstract: A minor amount of a radical trap, that is, an organic compound readily reacting with an organic radical, when combined with a polyolefin having a melt index of from about 0.2 to about 10, can be associated with 70 per cent tertiary butyl hydroperoxide (containing about 30 per cent water). In the event of accidental conflagration of the combination, the combustion continues at a moderate rate, thereby avoiding the propensity toward troublesomely rapid burning of unmodified aqueous 70 per cent TBHP. Container liners should have a polyolefin thickness of 0.7 to 7 mm, the polyolefin containing such radical trap in a concentration of from about 0.1 to about 5 per cent, generally 0.2 to 2 per cent. If particulate polyolefin is used, the radical trap concentration should be from about 10 to about 100,000 parts per million parts of aqueous TBHP. A concentration of polyolefin particles from about 0.6 per cent to about 6 per cent by weight of the TBHP is suitable.

Abstract: A heat-to-electricity converter is disclosed which includes a radioactive heat source and a thermoelectric element of relatively short overall length capable of delivering a low voltage of the order of a few tenths of a volt. Such a thermoelectric element operates at a higher efficiency than longer higher-voltage elements; for example, elements producing 6 volts. In the generation of required power, thermoelectric element drives a solid-state converter which is controlled by input current rather than input voltage and operates efficiently for a high signal-plus-noise to signal ratio of current. The solid-state converter has the voltage gain necessary to deliver the required voltage at the low input of the thermoelectric element.

Abstract: A new, solid catalyst suitable for the hydroformylation of low molecular weight olefins is disclosed. The catalyst composition is a hydrido-platinum group metal carbonyl-Group VA electron donor ligand complex on a solid, sodium form natural or synthetic crystalline aluminosilicate support.

Abstract: Butadiene is prepared by directing a C.sub.4 hydrocarbon stream through seven parallel adiabatic beds. The dehydrogenation period and the regeneration period are each about 9 1/5 minutes with evacuation and purge taking about 2 3/5 minutes of the 21 minute cycle. The temperature of the regeneration gas is individually adjusted in response to the summation of deviation of targeted conversion from average conversion and reactor deviation from average conversion amongst all reactors. Moreover, such adjustment minimizes deviations of each reactor from average conversion during the previous 21 minute cycle.The dehydrogenation effluent is mixed and sent through a common quenching zone. The quenched product stream's density varies in response to the extent of conversion, permitting measurement of conversion for each three minutes. Average conversion for each cycle is measured by averaging the conversions for such seven time periods. The density data are directed to a digital computer.

Abstract: A catalyst composition for the hydroformylation, including hydroxyhydroformylation, of C.sub.2 to C.sub.16 olefins to provide alcohols and aldehydes is disclosed. The catalyst contains a hydrido-platinum-group metal-carbonyl, such as hydridopalladium carbonyl, on a solid, acidic, silica-based support material. The catalyst composition can also contain a Group VA electron donor ligand, such as triphenyl phosphine.

Abstract: Diperoxides, useful as free radical type polymerization initiators, for example, are preparable from an organic hydroperoxide such as t-butyl hydroperoxide, and a ketone using catalyst comprising molybdenum or vanadium.