Abstract: Insulation particularly suitable for high voltage power cable consists essentially of low density polyethylene (or crosslinked polyethylene) and an effective amount of an alcohol of 6 to 24 carbon atoms which is a tree growth inhibitor capable of imparting at least a thousand-fold increase in electrical endurance as measured by an accelerated test procedure. Electrical trees can be initiated in the polyethylene in the presence of the alcohol. However, increased electrical endurance is obtained through inhibition of continued tree growth at that site.A precursor composition for a preferred insulation contains (i) low density polyethylene, (ii) a peroxide crosslinking agent, and (iii) an alcohol of 8 to 12 carbon atoms.

Abstract: New substituted acyl derivatives of amino acids which have the general formula ##STR1## are useful as angiotensin converting enzyme inhibitors.

Abstract: A graft copolymer having a polymeric backbone with pendent hydroxyl groups; wherein the hydrogen atom of at least the one the hydroxyl groups is replaced by the formula ##STR1## where R is an aliphatic group, a cycloaliphatic group or an aromatic group; R.sup.1 is an alkylene group having 2-6 carbon atoms; R.sup.2 is a polymer segment of a vinyl addition polymer, such as butyl acrylate/hydroxyethyl acrylate; coating compositions of this copolymer can be cross-linked with conventional cross-linking agents such as an alkylated melamine formaldehyde resin or an organic polyisocyanate and coating compositions useful for flexible elastomeric substrates can be prepared from this copolymer.

Abstract: An X-ray tube in which the electron beam can be deflected over the target is provided with means for causing the electron beam to scan in stepped, rather than continuous, manner along the target.

Abstract: New carboxyalkylacylamino acids which have the general formula ##STR1## are useful as angiotensin converting enzyme inhibitors.

Abstract: Penicillin esters and their acid addition salts of the formula ##STR1## wherein X is hydrogen, methyl, methoxy, chloro, or bromo and n is an integer from 1 to 3 provided that n is 2 or 3 only when X is hydrogen or methoxy; are disclosed. Upon oral administration, these esters provide improved absorption and result in high concentrations of the antibacterially active parent penicillin in the blood, tissues and urine.

Abstract: A computerized tomographic apparatus is described in which a wide fan of radiation scans a patient by rotating therearound, the fan being substantially flat and being maintained in alignment with a selected cross-sectional slice of a patient's body. Radiation emergent from the body along many substantially linear paths across the slice is detected by a detector means including a vacuum tube device containing a photo-cathode and, spaced therefrom, semiconductive means. Electrons emitted from the photo-cathode in response to light incident thereon (the light emanating from X-ray sensitive scintillating material) are accelerated towards the semiconductive means and impact thereon causing the generation of electrical signals indicative of the amount of X-radiation falling on the scintillating material.

Abstract: In a method of examining a body by means of penetrating radiation a source is arranged to provide a fan shaped spread of the radiation and a detector examines the intensity of a plurality of individual beams of radiation defined from the fan. The source and detector are orbited about the body so that the beams are provided at a plurality of angles relative to the body. In the associated processing, the data signals from the detectors are combined so that each combined signal relates to two beams 180.degree. to each other in the orbital movement. A further selection is also made of the data signals so that they are provided to a further processing stage in sets for which each set is of data signals relating to beams which are substantially parallel to each other.

Abstract: Derivatives of pyrrolidinecarboxaldehyde and piperidinecarboxaldehyde, and intermediates therefor, which have the general formula ##STR1## wherein R is hydrogen, lower alkanoyl or ##STR2## R.sub.1 is hydrogen or lower alkyl; R.sub.2 is hydrogen or hydroxy;R.sub.3 is hydroxymethyl, di(lower alkoxy)methyl or formyl;n is 1 or 2;and their bisulfite addition products, are useful as hypotensive agents.

Abstract: Hexafluoropropene is reacted with liquid sulfur trioxide in the presence of boric oxide, boron trichloride, boron trifluoride, tri(lower alkyl) borate, boron trioxychloride or boron trioxyfluoride at from 0.degree. C. to 150.degree. C. to form perfluoroallyl fluorosulfate and the sultone thereof. The perfluoroallyl fluorosulfate can be homopolymerized or copolymerized with various fluoroethylenes to form resins useful as ion exchange resins or catalysts. The fluorosulfate groups on the resins can be hydrolyzed to form carboxylic acid groups or various corresponding salts. The sultone of perfluoroallyl fluorosulfate can be rearranged to form .beta.-fluorocarbonyl-.beta.-fluorosulfonyl-trifluorethyl fluorosulfate.

Abstract: Computerized tomographic apparatus is described in which a radiation source and an associated detector array execute, concomitantly, reciprocating lateral scanning movements and rotational scanning movements relative to a patient's body, the scanning movements being effected in the plane of a cross-sectional slice of the body which intersects the patient's heart. The patient is located so that the heart is substantially at the center of the scanning movements. The lateral movements are substantially sinusoidal, arranged so that a substantially linear portion of the movement occurs when the source irradiates the heart, and the rotational movement is continuous or substantially continuous and any pauses are only brief, and during alternate lateral scans when the aforementioned substantially linear portions of movement occur. The scanning movements are synchronized to the patient's heart beats so that the heart is irradiated during a quiescent phase of its movement.

Abstract: Certain sodium borophosphate glasses containing 0 to 11 mole percent of one or more oxides selected from the group consisting of ZrO.sub.2, MgO and Al.sub.2 O.sub.3 are good ionic conductors and are resistant to molten sodium at about 300.degree. C. Exemplary is a glass consisting of 55 mole percent of Na.sub.2 O, 25 mole percent of B.sub.2 O.sub.3, 20 mole percent of P.sub.2 O.sub.5 and 5 mole percent of ZrO.sub.2.

Abstract: Films, 0.5-10 mils thick, which are rapidly and completely soluble in cold water, and which are suitable for use as packaging film in automatic packaging equipment, can be prepared by conventional melt extrusion processes when prepared from a novel composition consisting essentially of 5-20 parts by weight of a polyethylene glycol (having an average molecular weight in the range between 325 and 550) in 100 parts by weight of a partially hydrolyzed low molecular weight polyvinyl alcohol.

Abstract: Thioalkanoylalkanoic acid compounds and salts thereof having the formula ##STR1## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 each is hydrogen or lower alkyl;R.sub.5 is hydrogen, lower alkanoyl, benzoyl or ##STR2## A and B each is hydrogen or join together as a polymethylene chain --(CH.sub.2).sub.n -- to complete a 4-, 5- or 6- membered cycloalkyl group, and m is 0 or 1,are angiotensin converting enzyme inhibitors and are useful as hypotensive agents.

Abstract: A graft copolymer having a polymeric backbone with pendant hydroxyl groups; wherein the hydrogen atom of at least the one the hydroxyl groups is replaced by the formula ##STR1## where R is an aliphatic group, a cycloaliphatic group or an aromatic group; R.sup.1 is an alkylene group having 2-6 carbon atoms; R.sup.2 is a polymer segment of a vinyl addition polymer, such as butyl acrylate/hydroxyethyl acrylate; coating compositions of this copolymer can be cross-linked with conventional cross-linking agents such as an alkylated melamine formaldehyde resin or an organic polyisocyanate and coating compositions useful for flexible elastomeric substrates can be prepared from this copolymer.

Abstract: A copolyetherester composition is derived from terephthalic acid or ester forming equivalents thereof, 1,4-butanediol, an ethylene oxide-capped poly(propylene oxide) glycol and a branching agent having a functionality of 3-6. The ethylene oxide-capped poly(propylene oxide) glycol has an ethylene oxide content of from about 15-35 weight percent and a number average molecular weight ranging from about 1500-2800. The branching agent is present in the copolyetherester in a concentration of from about 1.5-6.0 equivalents per 100 moles of terephthalic acid or ester forming equivalent thereof. The copolyetherester composition contains from about 25-48 weight percent butylene terephthalate units and has a melt index at 230.degree. C. of less than about 50 grams per 10 minutes. The copolyetherester compositions can be injection molded or extruded into various shaped articles, e.g., hose, with ease and exhibit good physical properties, e.g., good low temperature properties and high strength.

Abstract: A one-piece, integrally molded plastic carrier adapted for supporting a plurality of bottles (such as beverage bottles) in a space envelope which is essentially the same as that space previously utilized by cardboard cartons. In an embodiment for carrying six bottles, a pair of non-planar handle supports extend upwardly from the base, with each of the supports resting in the central space between groupings of four bottles that are arranged to form a "square". The handle supports may be generally cylindrical or T-shaped, or a combination thereof; but in any case they are non-planar. The moment of inertia of the handle supports is high, so that the stiffness of the carrier is correspondingly high. A substantial slot is provided in the base between the two handle supports, and the slot is sized so that two bottle carriers may be nested together--with the handle of one carrier passing through the slot and into the bottom of another carrier.

Abstract: A support for mounting solar energy collectors on a roof of a building, which roof has an opening in the roof sheeting, includes a shell having a generally flat rectangular base and an upstanding edge secured to, and extending about the periphery of the base and a frame secured to, and extending about, the periphery of the shell. The frame is configured and dimensional to correspond to the outer surface shape of the roof sheeting and to permit mating receipt thereof in the opening of the sheeting.

Abstract: A substance which inhibits the enzyme .beta.-lactamase, produced by a wide range of microorganisms, is obtained when species of the microorganism Micromonospora are cultivated under aerobic fermentation conditions and this inhibitor can be isolated from the fermentation medium by extraction. This substance, denominated EM4615, is useful to enhance the effectiveness of .beta.-lactam antibiotics such as penicillins and cephalosporins.

Abstract: Process for crosslinking fluorocarbon polymers, of ethylene and tetrafluoroethylene or chlorotrifluoroethylene, which contain esterified pendant polyfluorinated tertiary alcohol groups.