Abstract: A detachable high-speed optoelectronic sampling head for use with an electron multiplier includes a housing having an evacuated chamber with a pair of transparent windows. Light to be detected is directed to the first window to a photoemissive strip spaced from a ground plane. The photoemissive strip comprises a microstrip, and the housing has high frequency feedthrough means for applying sampling potentials between said photoemissive strip and ground plane. A phosphor layer is provided on the other window in the chamber, and photoelectrons emitted from the photoemissive strip are directed through the ground plane to the phosphor layer.

Abstract: A novel plate system for thin layer chromatography comprises a supporting plate coated over about 50-90% of its area with an adsorbent layer, the uncoated surface comprising at least one strip of uniform width along an end of the supporting plate. Two such plates grafted and clamped in a lap-joint so that the edges of the adsorbent layers are in intimate contact provide an assembly on which a chromatogram developed on the first plate can be transferred in whole or in part onto the second plate. The assembly and technique are particularly useful for preparative thin layer chromatography.

Abstract: Aliphatic acids containing an isoprenoid 1,5-diene moiety are prepared in high yields by the selective gamma alkylation of .alpha.,.beta.-unsaturated acids with allylic electrophiles. The gamma-regioselectivity of the alkylation is controlled by the use of the dicopper(I) dienolates prepared from the .alpha.,.beta.-unsaturated acids. The method offers a particularly facile means for synthesizing isoprenoid 1,5-diene natural products such as farnesoic acid by alkylation of senecioic acid with geranyl bromide; geranoic acid by alkylation of senecioic acid with 3,3-dimethallyl bromide; and dl-lanceol by alkylation of tiglic acid with an allylic bromide derived from dl-limonene. Such products find use in the synthesis of insect pheremones, insect juvenile hormones, and components of perfumes.

Abstract: The administration of reserpine to nonlactating dairy cattle produces a marked increase in circulating serum prolactin levels. The parenteral administration of reserpine to nonlactating cows which have been hormonally induced into lactation, as by the parenteral administration of an estrogen and progesterone, and dexamethasone, results in a substantial rise in milk production.

Abstract: Disclosed are products and processes useful in catalysis of chemical reactions, especially the oxidation of organic materials. Specifically described are oxidation processes involving catalytically-active compositions derived from the admixture by smelting of certain metal oxides, or derived as an ash by-product from the combustion of coal, and which preferably include oxides of titanium, iron, magnesium and manganese as well as oxides of silicon, aluminum, calcium and potassium. Also described are substantially non-porous catalytic layers including such compositions which are useful in the manufacture of liners for "continuous cleaning" cooking devices.

Abstract: A process for preparing a bland, stable, aqueous dispersion of soybeans comprising:I. providing enzyme active soybean cotyledons, either intact or subdivided, while maintaining the moisture level thereof within prescribed limits;Ii. heating said soybean cotyledons sufficiently to inactivate the lipoxidase enzyme contained therein and to partially tenderize said soybean cotyledons;Iii. further tenderizing said soybean cotyledons until the soybeans exhibit a tenderometer value of between about 16 and about 300 pounds per 100 grams of soybeans on an equivalent whole bean basis; andIv. homogenizing an aqueous slurry of said tenderized soybeans, said slurry having a soybean concentration of less than about 20% by weight, in at least one pass through a homogenization zone at a pressure between about 1000 and 10,000 psi at a temperature between about 32.degree. F. and a boiling point of the slurry at the pressure within the homogenizing zone, thereby obtaining a bland, stable soybean dispersion.

Abstract: A ferroelectric wave transducer device comprising an unpoled ferroelectric substrate having a substantially sinusoidal poled region at a surface thereof. A metal plate electrode is disposed on the opposing surface of the substrate. In operation an A.C. voltage applied across the two electrodes gives rise to a surface elastic wave in the substrate. Also disclosed is a method of producing a surface wave transducer of the type described. A pair of interdigitated metal electrodes are applied to a surface of an unpoled ferroelectric substrate. A poling potential is applied between the electrodes, preferably while the substrate is heated. The interdigitated electrodes are then removed and a metal plate electrode is applied over the region where the interdigitated electrodes had been. Finally, another metal electrode is applied to the opposite surface of the substrate. Further disclosed is a surface wave variable delay device which includes a metal plate slidably disposed over a sinusoidally poled region.

Abstract: A transducer for a surface acoustic wave device. In accordance with an embodiment of the invention, there is provided an acoustic wave propagating substrate and first and second spaced elongated conductive fingers disposed on the substrate. A layer of dielectric material is formed over the first and second fingers. A first electrode is formed on the dielectric layer above the first finger, the first electrode being proportioned to oppose a predetermined portion of the first finger. A second electrode is formed on the dielectric layer above the first finger, the second electrode being spaced from the first electrode and proportioned to oppose another predetermined portion of the first finger. A third electrode is formed on the dielectric layer above the second finger, the third electrode being proportioned to oppose a predetermined portion of the second finger.

Abstract: The invention is directed to a waveguide for microwave electromagnetic energy. A conductive ground plane has a first layer of dielectric material disposed on its surface. A second dielectric layer overlays the first dielectric layer. The second dielectric layer has a higher dielectric constant than the first dielectric layer. An elongated dielectric strip is formed on the second dielectric layer, the strip having a width which is substantially less than that of the second dielectric layer. The strip is formed of a material having a dielectric constant which is less than the dielectric constant of the material comprising the second dielectric layer. In operation, the wave energy propagates in the second dielectric layer which has the highest dielectric constant. The dielectric strip provides a lens effect in the transverse direction so most of the wave energy is carried below the strip.

Abstract: The invention pertains to a laser apparatus which includes a laser cavity containing a laser medium, such as methyl fluoride or formic acid, which has a characteristic wavelength in the far infrared region of the spectrum. The laser cavity has first and second opposing mirrors which also respectively serve as an input mirror for the pumping radiation and an output coupling mirror. The invention is an improved output coupler which serves as one of the first and second opposing mirrors. A metal layer having a multiplicity of apertures therein is provided. At least one layer of dielectric material is disposed over the metal layer. The dielectric material is selected to be substantially reflective of infrared radiation (at least 80% reflective) and substantially transmitting of far infrared radiation (at least 80% transmissive). The reflectivity of the output coupler to far infrared radiation is selected by choosing the aperture size and shape of the metal layer.

Abstract: A source of carbon, such as coal, is reacted with excess steam in an amount of about 2 to 10 times the amount necessary for complete reaction with the carbon source so that the steam reactant is the only source of heat necessary to supply the entire heat of reaction. The steam is superheated in a separate vessel in such a manner that it does not contain oxygen, nitrogen or combustion products so that pollutant gases are not found in the reaction product gas since the carbon source never comes in contact with oxygen in the reactor.

Abstract: Biodegradable insecticides having the formula: ##STR1## where R.sub.1 is H or Cl, R.sub.2 is CH.sub.3 or Cl, X and X.sup.1 are the same or different and each is selected from the group consisting of C.sub.1 to C.sub.3 alkyl groups and C.sub.1 to C.sub.4 alkoxy groups.

Abstract: Biologically active geldanamycin derivatives of Formula III, ##SPC1##wherein R.sub.5, R.sub.6, R.sub.7 and R.sub.8 are the same or different and selected from hydrogen, hydroxy, halo, alkyl, alkoxy, carboxyl, carboalkoxyl, amino, amido, or N-alkylsubstituted amido; pharmaceutical compositions and therapeutic methods involving the same.

Abstract: Soybean dehulling, blanching and grinding apparatus is provided for preparation of a relatively coarse ground slurry consisting of water and approximately 12% by weight of bean tissue. Soybeans having a moisture content of approximately 13% are dehulled in a rapid and efficient manner and without crushing or grinding the cotyledons. After separation from the hulls, the whole cotyledons are blanched by dropping the same in boiling water without prior soaking. The blanching apparatus blanches the cotyledons rapidly and without producing excessive foaming. The blanched soybeans are then mixed with water and ground in a horizontally positioned grinding tube by means of a series of blades which also move the product along the tube while providing a uniform mixture of bean tissue and water. A screen is provided at the end of the tube which prevents the issuance of material until the solids have a desired size, as determined by the perforations in the screen.

Abstract: Non-toxic bromofluorocarbon radiopaque agents are disclosed. Certain monobrominated acyclic fluorocarbons, e.g., CF.sub.3 (CF.sub.2).sub.6 CF.sub.2 Br, are improved non-toxic radiopaque agents useful in diagnostic roentgenology, for example in visualizing the gastrointestinal tract, the tracheobronchial tree, the alveolar spaces or parenchyma of the lung, the spleen, the urinary bladder and ureters, the common bile duct and its radicals, the pancreatic ducts, the blood vessels, etc.

Abstract: Disclosed are systems, methods and materials for use in detection and quantification of sulfur oxides in a fluid sample. Involved is the reaction of a selected compound which is substantially non-fluorescent under given reaction conditions, e.g., 5-amino-3-sulfo-salicylic acid in a pH 1-3 solution, with sulfur oxides in the fluid sample to form a fluorescent reaction product which may be quantified by standard fluorometric techniques.

Abstract: P,P'-DISUBSTITUTED .alpha.-TRICHLOROMETHYLBENZYLPHENYL ETHERS ARE A NEW CLASS OF COMPOUNDS WHICH SHOW VARYING DEGREES OF UTILITY AS SELECTIVE OR NONSELECTIVE BIODEGRADABLE INSECTICIDES AND/OR LARVICIDES.

Abstract: Biologically active stereoisomeric forms of ansa ring compounds are prepared by heat treatment of a reaction mixture comprising the compound dissolved or suspended in a selected reaction medium and subsequent isolation of the desired isomeric form from the reaction mixture.

Abstract: A ferroelectric surface wave transducer device comprising an unpoled ferroelectric substrate having a substantially sinusoidal poled region at a surface thereof. A metal plate electrode is disposed on the opposing surface of the substrate. In operation an A.C. voltage applied across the two electrodes gives rise to a surface elastic wave in the substrate. Also disclosed is a method of producing a surface wave transducer of the type described. A pair of interdigitated metal electrodes are applied to a surface of an unpoled ferroelectric substrate. A poling potential is applied between the electrodes, preferably while the substrate is heated. The interdigitated electrodes are then removed and a metal plate electrode is applied over the region where the interdigitated electrodes had been. Finally, another metal electrode is applied to the opposite surface of the substrate. In a preferred embodiment of the invention the interdigitated electrodes are in the form of a moveable fixture.

Abstract: P,P'-DISUBSTITUTED .alpha.-TRICHLOROMETHYLBENZYLANILINES ARE A NEW CLASS OF COMPOUNDS WHICH SHOW VARYING DEGREES OF UTILITY AS SELECTIVE OR NONSELECTIVE BIODEGRADABLE INSECTICIDES AND/OR LARVICIDES.