A process for obtaining an aryl-substituted aliphatic nitrile is described. The process utilizes a solution of an aryl-substituted aliphatic halide and an organic or inorganic cyanide substantially insoluble in the solution. The mixture is subjected to ultrasonic vibrations for a time and at a temperature sufficient to produce the aryl-substituted aliphatic nitrile.

The present invention provides microwave attenuating, filled composite materials which contain a polymer or ceramic matrix and metallic tubules and processes for making the same and devices which contain such materials.

An antenna system arranged at the end of the runway radiates Tacan pulses, and an antenna system arranged beside the runway radiates additional information in the form of pulses having specific time relationships with the Tacan pulse-pair. The additional information is evaluated by means of a Tacan receiver whose video stage is followed by a decoder for the additional information.

Synthesis of cis 2-(1'-methyl-2'-isopropenylcyclobutyl)ethanol, a component of the boll weevil sex attractant, and intermediates therefor, in which 5-hydroxy-pent-2-ynoic acid ester or ethers thereof is methylated followed by cyclization to yield 3-methylpent-2-eno-5-lactone which is irradiated in presence of ethylene to yield 2,3-cycloethylene-3-methylpentano-5-lactone which is cleaved and converted into 2-(1'-methyl-2'-isopropenylcyclobutyl)ethanol.

A pair of balanced terminals is connected to a pair of interdigital-coupled quarter-wave resonators in an electronic device. This electronic device has a first resonance mode that resonates at a first resonance frequency f.sub.1 higher than a resonance frequency f.sub.0 in each of the pair of quarter-wave resonators when establishing no interdigital-coupling, and a second resonance mode that resonates at a second resonance frequency f.sub.2 lower than the resonance frequency f.sub.0. The second ...

A gas diffusion electrode is constituted by forming a porous layer comprising a super-fine particle catalyst of silver or gold and a fluorine-containing material on a substrate and connecting a gas-liquid permeable collector to the substrate. The gas diffusion electrode can be used stably as an oxygen cathode for a sodium chloride electrolysis, etc., for a long period of time without causing decreased water repellency of the fluorine-containing material in the gas diffusion electrode and without...

Silicon difluoride is produced by the reduction of silicon tetrafluoride in a plasma torch under argon atmosphere. Instead of the usual reducing agents finely divided silicon has now been used as a reducing agent.

A process for the preparation of a stable solution of semitrichinoyl is disclosed. A solution of rhodizonic acid and a solution of trichinoyl octahydrate is mixed and subjected to the action of light. The solutions of rhodizonic acid and trichinoyl occtahydrate have the same molarity, whereby a solution of semitrichinoyl is formed. Pursuant to a preferred embodiment: (a) an aqueous solution containing about 1% by weight of inositol is chlorinated in the presence of light at a temperature of betw...

The present invention discloses an antenna with a filter, which comprises a substrate; an antenna device, a filter and a feed end. The antenna device is printed on the substrate; the filter is coupled to the antenna device; the feed end is coupled to the filter. The filter and the antenna device are radiating members printed on the substrate.

A Baseband transmitter for a radio frequency (RF) communication device according to an embodiment of the present invention includes a single-carrier processor, a pulse shape filter, a multi-carrier processor and a signal combiner. The single-carrier processor generates a single-carrier signal at a first sample rate. The pulse shape filter includes multiple polyphase filters which filter the single-carrier signal according to a time shaping pulse that approximates a multi-carrier power spectrum a...