Abstract: The present invention relates to compounds of the formula ##STR1## wherein R' is hydrogen, straight or branched chain lower alkyl having from 1 to 4 carbon atoms or benzyl, Z is hydrogen or straight chain lower alkyl having from 1 to 4 carbon atoms, Y is hydrogen or a nitrogen blocking group selected from the group consisting of tertiary alkoxycarbonyl, benzyloxycarbonyl, cycloalkoxycarbonyl and vinyloxycarbonyl, R.sub.c is hydrogen, halogen or benzyloxy and R.sub.d is hydrogen, or R.sub.c and R.sub.d are benzyloxy; or an individual diastereomer thereof. Said compounds having use as intermediates in the production of enkephalin derivatives which in turn are used as analgesic and antipsychotic agents.

Abstract: Treatment of central nervous system depression in a mammal using method and compositions employing 1-aryl-1,2,3,4-tetrahydro-.beta.-carboline-3-carboxylic acids, esters and pharmaceutically-acceptable salts.

Abstract: Hypoglycemic phenylpropynylamino benzoic acids and the pharmaceutically-acceptable salts thereof, a method for lowering serum sugars and hypoglycemic compositions useful for the treatment of diabetes.

Abstract: A kit for the determination of transaminase present in body fluid having a first reagent containing aspartate, a second reagent containing alanine, and a third reagent containing 2-oxoglutarate substrate in combination with a secondary reaction system containing reduced nicotinamide adenine dineucleotide.

Abstract: The present invention concerns a method of inhibiting or controlling calcium scale deposition in SO.sub.2 flue gas scrubbers which comprises scrubbing said flue gases with an aqueous composition comprising concentrated sodium hydroxide and a 2-hydroxyethyl iminodiacetate calcium inhibitor.

Abstract: Method of reducing the amount of acetylene impurity present in hydrogen chloride gas comprising contacting said gas with an oxidation catalyst in the presence of an oxygen-containing gas to form carbon monoxide and/or carbon dioxide and water. The method of the present invention is particularly adapted to remove acetylene impurities from hydrogen chloride streams used in the oxychlorination of ethylene in the presence of a catalyst.

Abstract: Production of polycarbonate or phenolphthalein polycarbonate copolymers and method for recovery of solid copolymer from solution.

Abstract: Undesired impurities in polymer solutions, such as amine scavenging agents or hydrochloric acid, are removed by passing a contaminated polymer solution through a strong acid cation exchange resin bed.

Abstract: Water-soluble salts of low-molecular weight polyacrylic acids function synergistically with inorganic salts to obtain superior reduction of water demand of dispersed inorganic solids. The disclosed invention is particularly adapted for use in the wet-grinding process for preparing portland cement.

Abstract: A process for grinding coal or ores containing metal values comprising carrying out said grinding in a liquid medium and with a grinding aid comprising an anionic polyelectrolyte derived from polyacrylic acid and dispersible in the liquid medium, said grinding aid being present in an amount effective to provide increased grinding efficiency.

Abstract: A process for grinding coal or ores containing metal values comprising carrying out said grinding in a liquid medium and with a grinding aid system comprising an anionic polyelectrolyte derived from polyacrylic acid and certain inorganic metal salts, said system being dispersible in the liquid medium and being present in an amount effective to provide increased grinding efficiency.

Abstract: Highly purified alkali metal hydroxide and carbonate solutions are obtained by treating self-contaminated solutions thereof with composite ion exchange resin bodies having low residual amounts of quaternary ammonium cation not intimately associated with carboxylate anions to minimize inorganic chloride and chlorate anion leakage.

Abstract: Improved composite ion exchange resin bodies comprising a reaction product of an ingredient containing carboxylate anions polymerized within a strong base anion exchange resin, said resin bodies having low residual amounts of quaternary ammonium cation not intimately associated with said carboxylate anions to minimize inorganic chloride and chlorate anion leakage in ion exchange column operation.

Abstract: A process for grinding coal or ores containing metal values comprising carrying out said grinding in a liquid medium and with a grinding aid comprising copolymers or salts of copolymers of styrene with maleic anhydride, itaconic or citraconic acids dispersible in the liquid medium, said grinding aid being present in an amount effective to provide increased grinding efficiency.

Abstract: A process for grinding coal or ores containing metal values comprising carrying out said grinding in a liquid medium and with a grinding aid comprising an anionic polyelectrolyte derived from sulfoethylmethacrylic acid and dispersible in the liquid medium, said grinding aid being present in an amount effective to provide increased grinding efficiency.

Abstract: Water-soluble copolymers prepared from styrene and maleic anhydride and the water-soluble salts and partial esters thereof function synergistically with inorganic salts to obtain superior reduction of water demand of dispersed inorganic solids. The disclosed invention is particularly adapted for use in the wet-grinding process for preparing portland cement.