Abstract: In the solid-state image pickup device of the invention, a photodiode is formed on a semiconductor substrate, and a transfer channel is formed at a specific gap to the photodiode. On the semiconductor substrate, a transfer gate electrode formed through a gate dielectric film is provided, and an interlayer film is formed on the transfer gate electrode. Furthermore, a first light-shield film for shielding the transfer channel from light is formed on the interlayer film. On the first light-shield film, a second light-shield film is formed at least through an interlayer dielectric film. In this case, the interlayer dielectric film is composed of multiple layers of at least first interlayer dielectric film and second interlayer dielectric film, and in etching of the interlayer dielectric film, the second interlayer dielectric film is smaller in the etching rate to the first interlayer dielectric film, and the second interlayer dielectric film is formed beneath the first interlayer dielectric film.

Abstract: For sensing gaseous hydrocarbons in a gas mixture, a device consisting of two sensitive elements, one being a reference element, which are heated to different temperatures. The sensors, formed by subjecting films deposited by silk-screen processes to heat treatment at high temperature, are connected to an electronic evaluation circuit.

Abstract: A bottom electrode is of a double-layered structure composed of an aluminum portion and an anode oxide film. A surface of the aluminum portion is finished to a surface roughness of 1 .mu.m or less by polishing, for example, and the anode oxide film is grown by the anode oxidation technique. A surface of the anode oxide film is finished to a surface roughness of 1 .mu.m or less by polishing, for example. The polishing may be carried out by wrapping technique using diamond abrasive. The substrate slightly charged with descending cathode of plasma is weakly absorbed onto the bottom electrode, because the insulating film having a high degree of surface smoothness is interposed between the substrate and the bottom electrode. A large contact area and improved heat transfer are assured even with weak electrostatic absorption, thanks to excellent smoothness of the surface of the electrode. It is possible to control the temperature of the substrate without complicated mechanism.

Abstract: An aqueous gellable composition capable of producing gels resistant to syneresis in the presence of divalent ions, contains:a water-soluble acrylamide polymer or copolymer,a crosslinking agent formed by a water-soluble aldehyde, or a water-soluble aldehyde and a water-soluble phenol,a water-soluble anti-syneresis agent selected from: organic carboxy acids, organic hydroxy acids and aminoacids, or among aminophosphonic acids and their alkali-metal or ammonium salts.When malonic acid is used, a delay in aqueous composition gelation is additionally obtained.

Abstract: A method for determining the size of the stitch loops in sock-production machines by means of a control unit which stores three pairs of values for each of a plurality of different types of yarns with which each of a plurality of machine zones is to be produced. Each pair of values includes the relative height and the corresponding width of the knitted product, the specific length and corresponding width of the knitted product, and the height of the stitch-formation triangles and corresponding specific length of the knitted product. The width and type of yarn is selected for each zone to be produced, and the relative height corresponding to the selected width and type of yarn for each zone is determined by the control unit by means of an equation which represents a straight line. The rotational speed and angular position of the machine cylinder is measured and fed to the control unit, which then sends signals to step motors.

Abstract: A method, using a crane-equipped depot ship, for automatically repairing an underwater pipeline even if installed at great depth, comprising substantially the following steps: cutting off the damaged pipe piece by a single working module which, lowered onto the sea bed by a crane and clamped about said pipeline, removably supports the cutting apparatus; removing the concrete from the facing ends of the cut pipeline by said single working module which removably supports the removal apparatus, this being provided with an expansion-centering head; installing connectors by a sonar head alignment apparatus removably supported by said working module; and installing the replacement pipe piece by said working module using a reference and guide apparatus clamped about said ends of the pipeline. Specific apparatus for implementing the method are also described.

Abstract: A fertilizer containing Ca, Mg and NH.sub.4 4, having a water content ranging between 15% and 35% in weight and a melting point ranging between 50 and 65 degrees C is prepared by etching of dolomite and/or limestone with nitric acid, neutralization, concentration and granulation (FIG. 1).

Abstract: A catalytically active gel product is described consisting of a silica matrix which is amorphous to x-rays with uniform porosity, monomodal pore distribution and high surface area, within which one or more metal oxides possessing catalytic activity are dispersed. A process for preparing this catalytic gel is also described.

Abstract: A process is disclosed for producing particular hydroxyalkyl glucosides in the presence of a binary catalyst.

Abstract: A process is disclosed for preparing alkyl glycosides of general formula (I), by reacting an alcohol with a reducing sugar or with an equivalent of the latter, in the presence of a binary catalyst formed by a strong organic acid and a weak, also organic, base, having a K.sub.a within the range of from 10.sup.-8 to 10.sup.-1.

Abstract: A thermotropic polyesterimide, in which the liquid-crystalline phase is of nematic structure within a useful temperature range, consists of units of formula: ##STR1## the units being in the following ratios:a/(b+c)=1c/b=0-50/50, and preferably c/b<30/70The polyesterimide of the present invention possesses self-reinforcement characteristics, or reinforcement characteristics for traditional thermoplastic materials.

Abstract: An apparatus for purifying laser gas, in particular for excimer and F.sub.2 lasers, employs liquid nitrogen (12) for freezing impurities out of the laser gas, the freeze-out temperature being set by means of the pressure above the surface (14) of the liqid nitrogen (12).

Abstract: A device for sequentially loading tubes in a spinning machine wherein the tubes are fed by a tube orientating device. The device disclosed includes a duct for guiding the fall of the tubes and provided at its lower end with a shutter which loads one tube at a time onto the pegs of the spinning machine doffing belt by withdrawing it from a stack of tubes accumulated within the duct to form a buffer stock.

Abstract: A meshed plastic filter of a narrow-pitch net with a net structure and a frame structure formed in either a square or a circular overall shape into a plastic injection molded unitary body includes a dam/discharge rib in the net structure for storing molten plastic material and accumulating pressure of the molten plastic material, thereby enabling implementations of a fine-pitch net filter having mesh holes of 0.2 mm in diameter at a spacing of 0.3 mm, which has diverse applications, such as a filter or sieve for gasoline or oil, a dust collector filter and other various filtration.

Abstract: A process for recovering column bottom residues produced by distillation of ethylene glycol resulting from an aromatic polyester production process, involving treating the residues with an aromatic mono-alkyl ester and distilling the reaction product.

Abstract: There are disclosed devices for conditioning a blood flow which include at least one element with portions which are exposed to the blood and are deformable cyclically at a frequency comparable to the frequency of the heartbeat, in which the cyclically deformable portions have a continuous coating of biocompatible carbonaceous material comprised of carbon crystals having a density of greater than 2.1 grams per cubic centimeter applied by sputtering directly on and completely covering at least those portions of the device which are exposed to the blood.

Abstract: Compounds which can be defined by the formula (I):CF.sub.3 --C.sub.n F.sub.2n --C.sub.m H.sub.2m --CH.sub.3 (I)wherein:n is a numeral comprised within the range of from 1 to 21;m is a numeral comprised within the range of from 3 to 25;n+m is a numeral equal to, or higher than, 18;with the chain of carbon atoms being either linear or branchedare used as agents affording sliding characteristics (ski-waxes) for skis, to be applied onto the ski sole, and/or to be incorporated inside the ski sole.A sliding composition is also disclosed, which contains a paraffinic wax and at least one compound with formula (I).

Abstract: A new surface reaction model has been presented to simulate topological evolutions by taking into account the existence of absorbed radicals on the substrate surface. The model treats the etching rate as a function of the coverage ratio by absorbed radicals on the surface. Based on the model, a two-dimensional topography simulator has been provided. The simulator is applied to silicon-dioxide trench teachings made by hydrofluorcarbon gases. The topography simulator is used in a dry-etching process for realizing sub-half micron patternings.

Abstract: A bottle carrier case for transporting bottles of beverage having locating means on the bottom of the case for stably stacking the case and having openings provided in the concavities for easily removing the case from overlying bottles.

Abstract: A description follows of oxa(thia)diazol- and triazol-ones(thiones), with a iticide and insecticide activity, having the general formula ##STR1## wherein: Y=0, S; Z=0, S, NCH.sub.3, one of the two substituents P and Q is an ortho-substituted phenyl and the other a substituted benzyl.