Abstract: There is described an improvement in solenoid pilot operated valve using a spool/piston assembly which is operated by fluid pressure in a pilot chamber, wherein a piston is slidably mounted on one or both ends of a spool and independently returnable to its initial position upon relieving the pilot chamber of fluid pressure.

Abstract: A polyurethane top coating and a porous, polyurethane interposing layer are formed on a release carrier sheet. Split leather hide is bonded onto the porous layer with a compatible adhesive and the release carrier sheet is stripped from the top coat. The resultant laminate has the appearance and other properties of top-grain leather. The interposing porous layer functions as a cushion and prevents uneven deformation of top coat when the laminate is folded or stretched.

Abstract: An orthodontic headgear appliance having a safety system which includes a release mechanism for the headgear tensioning apparatus, a system for selectively setting limits for free travel of the facebow and for activating a disconnecting system when a forward force on the facebow is still being applied when the travel limit is reached.

Abstract: A new antiviral agent is now provided, which contains as the active ingredient at least one known glycine derivative of the formula: ##STR1## wherein R is a hydrogen atom, R' is a group --CH.sub.2 NH.sub.2, --CH.sub.2 NHCONH.sub.2, --CH.sub.2 NHCONHOH, --CH.sub.2 CH.sub.2 PO(OH).sub.2, ##STR2## or R and R' taken together form a group ##STR3## and R" is a hydrogen atom or a lower alkyl group, or a pharmaceutically acceptable salt of said glycine derivative. This antiviral agent is useful for therapeutic prevention and treatment of diseases caused by various kinds of viruses.

Abstract: A method for preparing a vaccine suitable for use in protecting lobsters against gaffkemia, which comprises:(a) culturing a logarithmic growth phase of the bacteria Aerococcus viridans (Var. Homari) in a suitable growth medium containing sources of assimilable complete nutrients for said bacteria;(b) adding a sublethal, replication-inhibiting amount of an antibiotic effective against said bacteria to said culture and incubating the resultant admixture for a period for time sufficient to accumulate antigens therein protective against gaffkemia infections; and(c) recovering said protective antigens to form a vaccine containing an immunologically effective amount of said antigens free of said living bacteria and substantially free of in vivo effective amounts of said antibiotic.

Abstract: A glass having a high refractive index, preferably >1.77, and a low specific gravity, preferable .ltoreq.3.8, is provided for utilization as spectacle lenses. The glass consists essentially of 80 mol percent or more of light cationic oxides with the remainder being cationic oxides having a greater molecular weight. It has a high crystallization stability in a viscosity range >200 poises and an expansion coefficient .alpha..times.10.sup.7 between 20.degree.-300.degree. C. of .ltoreq.100. Sufficiently light in weight to be well-suited for use as spectacle lenses, the glass can be continuously produced, as it has no pronounced tendency toward crystallization. The resulting corrective optical lenses have relatively high dioptric values, even with small center and edge thicknesses.

Abstract: Optical glasses having high refractive indexes and low specific gravities are provided for use as both distant and near vision spectacle lenses. The glasses consist essentially of low molecular weight cationic oxides, alkali metal oxides and divalent oxides to promote the crystallization stability of the glass. They have good chemical resistance, chemical hardenability and a thermal expansion coefficient between 93 and 99.times.10.sup.-7 /.degree. C. in the range of 20.degree.-300.degree. C. Optical lenses can be continuously produced due to the high crystallization stability of the glasses and the resultant spectacle lenses have high dioptric values even with thinner edge or center thicknesses.

Abstract: Lithium-free silver-activated phosphate glass suitable for use in radio-photoluminescence dosimetry and having improved chemical resistance, particularly to weathering, is provided by controlling the alkali metal metaphosphate content in the glass compositions to not more than 26% by weight, preferably 15-26% by weight, and the alkaline earth metaphosphate content to at least 16% by weight, preferably 16-27% by weight, based on the total composition.

Abstract: A liquid-cooled smoking device includes a plurality of superposed chambers, the lowermost one of which defines an ash receptacle for collecting ash deposits entrained within the smoke. The receptacle is separated from the upper liquid-coolant chamber through which the smoke passes to be cooled. Concentrically arranged tubular members disposed within the liquid-coolant chamber define a sinusoidal smoke flow path within the coolant so as to cool the smoke to acceptable levels. A tobacco reservoir is operatively associated with the smoking bowl of the device so as to semi-automatically replenish consumed tobacco.

Abstract: Single crystalline, acicular ferric oxide particles are produced by maintaining an aqueous suspension of ferric hydroxide at an elevated temperature at an alkaline pH in the presence of an organic phosphonic acid compound or a hydroxycarboxylic acid compound as a growth-regulating agent.

Abstract: New tunicamine derivatives are provided which exhibit antiviral activity against some virus, particularly Newcastle disease virus, and inhibitory activity against coccidiosis and which are also of particular value as intermediates for the preparation of a variety of useful antibacterial, antitumor and antiviral compounds. They have a structure of the formula: ##STR1## wherein R represents hydrogen or a fatty acid residue of the formula (CH.sub.3).sub.2 CH(CH.sub.2).sub.n CH.dbd.CHCO-- where n represents an integer of 8 to 11 inclusive. They are prepared either by fermentation methods or by acid hydrolysis of the known antibiotic tunicamycin.

Abstract: A fuel slurry comprising a mixture of a fuel oil and pulverized coal may be effectively stabilized with a small amount of a condensation product of a sulfonated benzene or naphthalene derivative-formaldehyde, ligninsulfonic acid, carboxymethylcellulose, carboxymethyl-starch or a salt thereof.

Abstract: 2-Substituted benzimidazole compounds of the formula: ##STR1## wherein R.sub.1 is hydrogen, halogen, lower alkyl or lower alkoxy, and R.sub.2 is hydrogen or lower alkyl with the proviso that R.sub.1 and R.sub.2 do not stand for hydrogen simultaneously and, when R.sub.1 is hydrogen, R.sub.2 cannot mean a methyl group at 6th position on the pyridin-2-yl group or methyl an isobutyl group on the phenyl group; are useful as anti-inflammatory agents and/or analgesics.

Abstract: Anti-mutagenic factor is fractionated from cabbage juice. The factor is a protein having an M. W. of about 48,000 when determined by the SDS-gel electrophoresis and shows characteristic adsorptions at 280 nm and 404 nm. The factor substantially inhibits the mutagenic activity of various mutagens such as pyrolysates of amino acids.

Abstract: Azetidine carboxylic acid esters are converted into enol silyl ethers which, as enamino ketene acetals, undergo ready oxidative cleavage of the ethylenically unsaturated double bond, e.g. by dye-sensitized photo-oxygenation, to form beta-lactams. The beta-lactams and substitution products thereof are useful intermediates in the synthesis of biologically active lactams.

Abstract: 2-Substituted benzimidazole compounds of the formula: ##STR1## wherein R.sub.1 is hydrogen, halogen, lower alkyl or lower alkoxy, and R.sub.2 is hydrogen or lower alkyl with the proviso that R.sub.1 and R.sub.2 do not stand for hydrogen simultaneously and, when R.sub.1 is hydrogen, R.sub.2 cannot mean a methyl group at the 6th position on the pyridin-2-yl group or methyl an isobutyl group on the phenyl group; are useful as anti-inflammatory agents and/or analgesics.

Abstract: A 9,3"-di-acyl derivative of a macrolide antibiotic can be readily produced by reacting a macrolide antibiotic or an acyl derivative thereof with an organic acid halide, particularly an alkanoic acid halide, in a solvent and in the presence of a molecular sieve consisting of a synthetic zeolite and then de-acylating partially the resultant acylation products by a partial hydrolysis in an aqueous alcohol to give the 9,3"-di-acyl derivative of the macrolide antibiotic.

Abstract: An accessory (1) for holding toast, muffins and other food articles includes two sections (2,3) which are hinged along their bottom edges to form a carrier to be inserted into one slot of a pop-up toaster. The carrier is formed of two complimentary sections, each of which includes a handle (10) of heat resistant material at its top, a metal support plate (12) attached to the underside of the handle, a plurality of support wires (13) attached to the ends of the support plate, and a plurality of guide wires (16) also attached to the support plate intermediate the support wires. Both the guide wires and the support wires have circular loops (21) at their bottom ends so that a hinge (4) can be inserted within and retained by the circular loops. The hinge which is inserted in the circular loops consists of a hollow tubular cylindrical metal member (14) and a pin (15) which is inserted within the tubular member.

Abstract: Polyimides of the formula ##STR1## Methods of making and polymerizing precursors for such polymers. Coating and adhesive compositions including constituents which can be converted into polyimides with the foregoing structure. Methods of making and using the compositions. Adhesion promoters for such compositions which are reaction products of aromatic dianhydrides and cyclic oxoimines, and methods of producing and using the adhesion promoters.

Abstract: Polyimides of the formula ##STR1## Methods of making and polymerizing precursors for such polymers. Coating and adhesive compositions including constituents which can be converted into polyimides with the foregoing structure. Methods of making and using the compositions. Adhesion promoters for such compositions which are reaction products of aromatic dianhydrides and cyclic oxoimines, and methods of producing and using the adhesion promoters.