Abstract: The combination of a self-adjusting payoff and a compact, portable metal forming device comprising: 1) a frame having entry and exit ends; 2) guide means adjacent the entry end for guiding a sheet of metal to be formed to a hand operated drive assembly supported within the frame that engages the metal sheet and drives it, through the operation of a series of gear linked separately journaled forming roll pairs mounted in the frame, 3) adjacent the exit end an adjustable cam wheel that engages one edge of the metal sheet and forms that edge just prior to the metal sheet reaching the exit end, and 4) forming the exit end, a guillotine cutter including a shaped exit aperture for cutting the formed metal sheet to any selected length.

Abstract: A compact, portable metal forming device comprising: 1) a frame having entry and exit ends; 2) guide means adjacent the entry end for guiding a sheet of metal to be formed to a hand operated drive assembly supported within the frame that engages the metal sheet and drives it, through the operation of a series of gear linked separately journaled forming roll pairs mounted in the frame, 3) adjacent the exit end an adjustable cam wheel that engages one edge of the metal sheet and forms that edge just prior to the metal sheet reaching the exit end, and 4) forming the exit end, a guillotine cutter including a shaped exit aperture for cutting the formed metal sheet to any selected length.

Abstract: Alumina is carbothermically and cyclically reacted with carbon and recycled materials within a reduction zone to produce a slag layer, an overlying aluminum metal layer, and vaporization products which are passed through a vapor-permeable back-reaction zone, which comprises a feed charge mixture which is selectively connected to the reduction zone. The aluminum metal layer is initially contaminated with 20-37% of Al.sub.4 C.sub.3 by weight. The vaporization products preheat and react with the feed charge mixture within the back-reaction zone to produce pre-reduction products which are selectively co-fed to the reduction zone with any unreacted portions of the feed charge mixture. The liquid/solids ratio in the back-reaction zone is limited, thereby maintaining the zone in vapor-permeable and non-slumping condition, by varying proportions of alumina fed to the back-reaction zone and to the reduction zone.

Abstract: A chromatographic material comprising an inorganic support-polysaccharide particle matrix is described. The matrix comprises an inorganic support having a high surface density of hydroxyl groups and, covalently attached thereto, insoluble particles of a polysaccharide. The free hydroxyl groups of the matrix can be activated, say, by treatment with cyanogen bromide or sodium metaperiodate, to form active sites where ligands can be attached for affinity chromatography.

Abstract: A process is described for improving the properties of a phosphor material comprising an oxysulfide that has been subjected to grinding, in which the phosphor material is heated while exposed to an oxygen-containing atmosphere at a temperature of about 600.degree. to about 1000.degree. C. The processed phosphor material can be used, for instance, in x-ray screens.

Abstract: An improved multilayer element for detecting glucose in samples of biological fluid which may contain with fluoride ion as a contaminant or preservative is described. The improved element comprises a buffered Trinder's reagent, which reagent comprises glucose oxidase, peroxidase, 4-aminoantipyrine and a phenolic or naphtholic coupler, which is buffered to a pH between about 4.5 and about 6.0. Such a buffering reduces any interference which may be due to fluoride ion present in the sample under analysis.

Abstract: An improved fermentation method comprises growing a cholesterol oxidase-producing microorganism in a medium comprising a carbon source, such as glycerol, yeast extract, a nonionic surfactant, an auxiliary carbon source which is also an inducer of cholesterol oxidase, and trace salts. Yields of cholesterol oxidase up to about 900 U. (international units) per liter have been obtained using the improved method of the present invention.

Abstract: There are disclosed buffered compositions for detecting either hydrogen peroxide or a substance having peroxidative activity by the catalytic oxidation of a dye-providing material by hydrogen peroxide in the presence of the material having peroxidative activity, which compositions comprise(A) hydrogen peroxide or substance having peroxidative activity, as appropriate, and(B) as the dye-providing material, either(I) a mixture of(a) either a sulfonyl hydrazone of the formula ##STR1## or a sulfonyl hydrazone precursor of the formula ##STR2## wherein R = alkylR' = hydrogen, aryl, alkoxy, halogen or alkylR" = aryl or alkylZ = atoms necessary to complete a heterocyclic ring of 5-6 atoms in the ring nucleusM.crclbar. = an anion; and(b) a coupler or(II) a triarylimidazole of the formula ##STR3## wherein R.sup.1, R.sup.2 and R.sup.3 are each an organic group such that at least one of R.sup.1, R.sup.2 and R.sup.3 is an ortho or para hydroxy substituted aryl group of up to 18 carbon atoms; the other two R.sup.1, R.sup.

Abstract: A method for preparing cholesterol oxidase, comprising the steps of:(a) growing a cholesterol oxidase producing microorganism in a medium comprising a nontoxic concentration of nonionic surfactant to yield extracellular cholesterol oxidase; and(b) separating the extracellular cholesterol oxidase from the medium.Preferably, cholesterol oxidase is prepared from a growth medium of Nocardia cholesterolicum species NRRL 5767 or 5768 which contains cholesterol, a suitable derivative of cholesterol or a 3-.beta.-hydroxy sterol as a cholesterol oxidase inducer and a nonionic surfactant in a concentration which is not toxic to said bacterium, which does not produce decomposition products in concentrations sufficient to be toxic to said bacterium, and in sufficient concentration to produce extracellular enzyme.

Abstract: Catalase is effectively removed from a uricase preparation by amphiphilic chromotography using as the column material cyanogen bromide-activated polysaccharide having a hydrophobic ligand attached thereto. Particularly useful hydrophobic ligands are the alkanediamines.

Abstract: A stable uricase preparation of high activity is produced by growing Micrococcus luteus NRRL B-8166 in a nutrient medium. Uricase preparations having activities of up to about 1000 U/liter are produced.

Abstract: An integral analytical element for analysis of liquids for their cholesterol content is disclosed. The element is of the type which comprises at least two superposed layers including a spreading layer and a reagent layer in fluid contact and, optionally, a support. Cholesterol oxidase and a composition for the hydrolysis of cholesterol esters comprising lipase having cholesterol esterase activity and protease are included in the element such that cholesterol esters contained in a sample applied to the spreading layer are saponified to free cholesterol and free cholesterol is decomposed in the presence of cholesterol oxidase to produce a detectable change related to the total cholesterol content of the sample.