A method of determining on a discrete analyzer the nicotine content of tobacco or a smoking-related product by preparing an aqueous extract of a sample of tobacco or smoking-related product, pre-reacting the extract with an acidic buffered solution of pH not more than 6 for at least two minutes, reacting the pre-reacted extract in the discrete analyzer with aniline and cyanogen bromide, measuring the intensity of yellow coloration generated, and comparing said intensity with that produced by a n...

An enhanced quantitative assay for chiro-inositol concentration can be used to determine insulin-resistance, or a predeposition to the development of insulin-resistance, in type I and type II diabetics. Spot urine or serum samples reflecting concentrations of chiro-inositol below about 1.0 micrograms/ml in urine or 0.1 micrograms/ml in serum are indicative of a predisposition to the development of insulin-resistance, while concentrations below about 0.3 micrograms/ml or 0.03 micrograms/ml in ser...

Capillary Zone Electrophoresis (CZE) with laser-excited fluorescence detection has been found to be a fast, easy, and accurate method for directly measuring serum retinol. Due to its small sample requirements, the method may be used for finger-prick analysis.

A four-way spool valve assembly embodying a regenerative circuit for controlling the actuation of a double acting fluid motor for a bulldozer blade or the like characterized in that the spool has therewithin a relief valve and a check valve respectively operative to build up back pressure in the return line from the rod end of the motor during the blade lowering operation and to permit return flow under such back pressure into the inlet port to prevent cavitation of the head end of the motor, an...

A staple removal tool includes a working end with an enlarged area and forked portion. The forked portion includes two prongs separated by a substantially V-shaped slot, wherein the V-shaped slot includes a rounded junction. The working end tapers in thickness along two non-parallel planar surfaces that may include grooves set transversely to the longitudinal axis of the tool. A second embodiment of the staple removal tool includes a working end with both outwardly and inwardly curved exterior s...

An apparatus is provided for use with an injection molding machine to remove the product in the same orientation in which it was molded.

A method for the specific detection of inositol and phosphatidylinositol within a model membrane such as liposomes or within a cellular system such as T lymphocytes.

A method for fluorometric analysis of catecholamines characterized in that, after the addition of a catecholamine into a solution of 1,2-diphenylethylenediamine containing an oxidizing reagent at a pH of 4 to 10, the mixture is allowed to stand for more than 1 minute at a temperature of higher than 15.degree. C. to make cateocholamine fluorescent, is disclosed.

Apparatus for making micro-abrasions, particularly on human tissue, including a handle having an aperture which is intended to be positioned on the surface to be treated, and a nipple device for the metered supply of reducing substances in a pneumatic carrier to the aperture of the handle. The supply device comprises only a vacuum source connected to the handle to draw the reducing substances towards the aperture of the handle. A collector device is provided for collecting the used substances fo...

A portable wheel stand, wherein a platform member is supported above the ground upon downwardly extended legs pivoted thereto; a ramp member pivotally mounted to the platform member on a common axis with the pivotal mounting on one of the leg members to said platform member; the ramp member extending on an incline from the ground to the upper portion of the platform member; the leg members and ramp member being pivotally connected with the platform member so as to be foldable into compact relati...