Abstract: A method for detecting small leaks in a tank storing a liquid by measuring changes in the location of a float suspended in the liquid. The method includes the steps of sealing the float to prevent the condensation of vapors within the float, positioning the float at a preselected depth, modulating an emitted signal by an amount which varies with the changes in the location of the float, and detecting the modulated signal. Changes in the signal are indicative of small changes in the location of the float and small leaks in the tank.

Abstract: The invention consists of improved apparatus and a kit packaged improved apparatus and methods for use of such apparatus such kits especially adapted for isolating and identifying and quantitatively measuring the MB iso-enzyme of creatine phosphokinase in fresh human blood serum and apparatus including combinations of racks, glass receptacles and other equipment for making various quantitative and qualitative blood and blood serum tests.

Abstract: The retention of the beta brass phase structure (body-centered cubic) as gold atoms (molars) are substituted for copper atoms. Thus essentially the useful physical and working properties of the beta brasses are retained (hot forgeability, castability, some ductility etc.). As to chemical behavior, there is a definite nobleization effect of the beta brasses, i.e. all gold-containing beta golds are more tarnish resistant than the beta brasses, and the nobleization increases with gold content. However, of most importance from a commercial point of view, is that the low kt beta golds (4-kt, 6-kt) are more tarnish resistant than the 10-kt conventional jewelry alloys, and equal to those of 14-kt gold. In essence there is a tarnish resistance enhancement in going from alpha structure to beta structure kt for kt, in the jewelry range. Other noble metals (Pd, Pt, Ru, Rh, Os, Ir and Ag) may be used singly or in combinations with, or in lieu of, the gold.

Abstract: Flotation of fly ash to recover coal contained therein is carried out in at least two steps, pH of the flotation slurry in the first step being 6-8, and in the last step lower than in the first step and below 6.5, preferably in the range of 3-5. The temperature may be ambient but is preferably 30.degree.-60.degree. C. As collector and frother several of those commonly employed are usable, preferably gas oil and pine oil, respectively. Desired pH is preferably achieved by sulphuric acid if desired in part by acidic flue gases. There is obtained separation into an almost carbon-free ash fraction and a carbonaceous fraction of low ash content.

Abstract: The invention comprises preparations for the treatment of neoplasms, the methods of treatment of neoplasms using such preparations, and processes for preparing such preparations, including the step of selective enzymatic degradation of the nuclei of cancer cells.The invention further comprises the method of treating patients suffering from neoplasms with immunomodulating agents obtained by isolating the genetically active components of cancer cell nuclei obtained from cancer tissue, subsequently recombining them by specific hybridization steps to prepare a vaccine therefrom, and intravenously, intraperitoneally and/or intramuscularly administering the resulting vaccine product to patients.

Abstract: A product which comprises essentially dry, storable, dehydrated fibrous fish products and process for making same from various raw materials including without limitation underutilized fish species or deboned fresh or frozen fish scrap and various parts. The process for making the novel product includes mincing, followed by a one-step, controlled, dehydration under conditions of reduced pressure and in the absence of an oxidizing atmosphere such as air, and at elevated temperatures of up to 95.degree. C., and in the absence of any other added ingredients.

Abstract: The invention comprises a multi-step synthesis of l(-) prostaglandin E.sub.2. The special features of the synthesis include: (1) a triply-convergent conjugate-addition and alkylation reaction involving the 1,4-addition of a chiral vinyl lithium reagent to a chiral vinylsulfone to produce a sulfone-stabilized anion. This anion is alkylated in situ to produce the basic prostaglandin skeleton structure, which is then subjected to (2) an efficient peracid oxidation of a secondary amine to a .beta.-silyloxy oxime; and (3) an alkali-catalyzed 1,4-elimination of an .alpha.-sulfonyl oxime to produce a vinyl nitroso intermediate. This intermediate is treated with borohydride to give a stereospecific 1,4-reduction which yields the bis-silyloxy oxime of l(-)PGE.sub.2. Hydrolysis of the oxime, with concurrent cleavage of the silyloxy protecting groups, affords l(-)PGE.sub.2.

Abstract: The invention is a process for a rapid and precise colorimetric method for determination of the total glucosylated blood proteins. The method is especially adapted and useful as a clinical, diagnostic aid for identification, management and treatment for diabetics. The method essentially comprises use of phenylhydrazine derivatives as reagents to determine the extent of glucosylation of hemoglobin and other proteins in the blood samples tested. The adduct of the aldehyde sugar (glucose) and the hemoglobin possesses the ketoamine structure. This structure is readily detected colorimetrically after treatment with a phenylhydrazine to give the corresponding phenylhydrazone. Phenylhydrazine and 2,4-dinitrophenylhydrazine are preferred reagents for the diagnostic process.

Abstract: Improved steps and methods for rapid, efficient and accurate assay of the CPK isozyme MB (cardiac fraction) and other determinations using chromatographic column technique. The improvements are especially adapted for carrying out rapid diagnostic tests in clinics and hospitals. Also contemplated improved apparatus and methods and uses of same adapted for the test method, such apparatus having novel features which can be packaged and merchandised in kit form. Other special features include use of electrophoresis either with or without the conventional chromatographic column analyses and using a selected colored (preferred-green) marker dye. Another special feature is that the used columns of the improved design can be conveniently recycled using the same solutions.

Abstract: The invention is a multistep process for the production of metallic aluminum. An aluminum containing ore such as bauxite, alumina, and clay is reacted with a carbon containing material, oxygen and bromine at an elevated temperature to produce aluminum bromide. The aluminum bromide is then electrolyzed to give aluminum and bromine. The bromine is conveniently recycled to the first step. The oxides and other reactive contaminants in the ore starting materials are simultaneously converted to bromides which can be hydrolyzed and oxidized to bromine for use in the process. Alternative steps in the process are also possible which avoid the electrolysis step but use a disproportionation step.

Abstract: Polymer-bound photosensitizing catalysts are effective in the heterogeneous catalysis of various photosensitized chemical reactions, such as photooxidation reactions, photodimerization reactions, and photocycloaddition reactions, and are thereafter readily separated from the reaction medium and reaction products by simple filtration. The polymer-bound photosensitizing catalysts comprise the nucleophilic displacement reaction product of (A) a polymeric material having attached thereto an available leaving group which is capable of being displaced in a nucleophilic displacement reaction with a nucleophilic reagent and (B) a photosensitizing catalytic compound containing in its molecule a nucleophile which is capable of displacing the leaving group attached to the polymeric material in a nucleophilic displacement reaction.

Abstract: The invention comprises a method for the color stabilization of iodoalkyne carbamates by the addition thereto of selected epoxy compounds. The epoxy compounds which thus function as stabilizers may be employed as a part of solutions containing the iodoalkyl carbamates, or they may be employed as a part of the films, coatings or compositions containing the iodoalkyne compounding.

Abstract: It was previously found that a catalyst containing molybdenum and at least one element of the lanthanide or actinide groups or mixtures thereof, at a temperature of from 300.degree. C. to 600.degree. C. and a pressure of from 100 psig to 2,000 psig was a superior catalyst for the production of methane from a feed mixture containing hydrogen, carbon monoxide and gaseous compounds of sulfur.It has now been discovered that although the presence of alumina as an additional component had not been well characterized, it gives advantageous results when present in these methanation catalysts. Experimental data have shown that when alumina is added in small proportions to the molybdenum containing catalysts it results in further increased activity. Substantially the same temperatures, pressures and feed streams are used as in the process which does not employ the alumina in the catalysts.

Abstract: The invention is for the preparation and use of novel compositions and formulations of pressure sensitive adhesives for solid surfaces and which are especially adapted for use on both flexible and rigid plastic surfaces. Both the compositions and the adhesive formulations are considered to be novel and contain, among other components and ingredients, acrylic and methacrylic ester formals. The new formulations have been shown to have superior properties in a number of critical areas all of which are of great importance and provide advantages for the pressure sensitive adhesives.

Abstract: This invention relates to a method for obtaining materials and products based on urea-formaldehyde resin. Thus, the invention is a method of obtaining composite materials and products, particularly for construction and building purposes, based on urea-formaldehyde resins. It relates particularly to cast materials and products. As the active filler and curing agent for the urea-formaldehyde resin there is used phosphogypsum, which is a by-product of phosphoric acid production and which can be used either moist or dried. Moist phosphogypsum usually contains 40 weight percent of water and is added in up to 40 to 90 weight percent of the overall mixture. The dried phosphogypsum contains only water of crystallization since its "loose" water has been extracted. It is added in quantities of from 30 to 50 weight percent of the overall mixture. This method does not require special temperatures and pressures, i.e., it can be used at atmospheric pressure and at room temperature.

Abstract: A systematic and programmed wash cycle for cleaning automatic and semi-automatic biochemical analyzers and separators and other equipment. The wash cycle includes a series or sequence of specific and ordered washing steps using a fixed specific sequence of reagents in critical concentrations including use of a hypochlorite reducing agent, a peroxide oxidising agent, an alkaline hydroxide solution, a solution of cetyl pyridinium bromide and cinnamic aldehyde, a solution of a polysulfonated alkyl detergent and a hydrochloric acid solution. It is also contemplated as a special feature, to use a so-called "polishing" system to eliminate from analyzers the micro-organisms and enzymes which cause interference with UV analyses. It is also a particular feature that the ordered wash cycle can be used to clean tubular flow systems, including piping and plumbing, such as may occur in centralized air conditioning units and miscellaneous washing machinery.

Abstract: When making a foundry mould or core from a fluid mixture comprising sand and a foamed aqueous phase comprising resin condensate, foaming agent and acid curing agent and that is a stable foam, improved results are obtained if the fluid mixture is obtained by forming a fluid mix of the sand, resin condensate and foaming agent and then mixing the acid curing agent into this.

Abstract: Floor or wall covering is provided and comprises a decorative opaque surface layer bonded to a sheet backing obtained by comminuting, softening and resheeting a sheet material comprising a fibrous reinforcement, a layer of foamed vinyl resin and pigmented decoration. The fibrous reinforcement is normally of glass fibres and particulate inorganic filler is incorporated into the mass that is resheeted.

Abstract: The invention relates to a sealing material for use in connection with ostomy devices, particularly stoma pouches, to surround and protect a stoma in the human body. The improvement is that the material is a shaped, gel-like composition composed of a largely continuous phase consisting of a physically cross-linked elastomer or a mixture of such elastomers, and preferably, but optionally, one or more hydrocarbon tackifier resins and likewise optionally, but preferably, an oil extender; and distributed in the continuous phase one or more hydrocolloids. The gel-like composition has a low resistance to quick deformation and a rapid recovery to the original shape after deformation.