Raman spectra of supported molybdena catalysts: II. Sulfided,used, and regenerated catalysts

Raman spectroscopy has been used to investigate the structural changes that two supported molybdenum oxide catalysts undergo upon specific chemical treatments. Molecular MoS₂ structures are indicated after sulfidation by a mixture of $\text{H}{}_2\text{H}{}_2\text{S}$. Catalyst samples used in a coal hydrodesulfurization process yield spectra dominated by intense scattering from carbon deposited in the pores of the catalyst. Spectra of used catalyst samples, subjected to controlled air-firing to 600 °C, show that all of the spectral features of the unused catalyst are not recovered after this “regeneration” procedure.     

Solvent extraction used in industrial separation of rare earths

The total reflux method as applied to the separation of rare earth elements is outlined with reference to extractants Versatic 911, tributyl phosphate and di-2-ethylhexyl phosphoric acid. Industrial solvent extraction processes are described for the production of pure compounds of lanthanum, praseodymium, neodymium, samarium, europium, gadolinium and yttrium.     

Utilizing expectancies in alcoholism treatment.

35 veterans who participated in an assertion training program as part of their treatment for alcoholism completed the Alcohol Expectancy Questionnaire (AEQ; [S. A. Brown et al; see PA, Vol 65:1217]) and self-evaluations of social competence. The participants were rated on social interaction skills by an independent observer during their initial and final training sessions. Analyses indicated significant relations between the Social and Physical Pleasure scale of the AEQ and improvement in Ss' social competence. Findings provide modest support for the utility of incorporating alcohol expectancies in treatment allocation decisions and suggest that targeting certain expectancies may optimize treatment effect. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Meat and vegetable protein blends for engineered foods

The meat industry in the United States offers the biggest volume potential for vegetable protein. American Meat Institute reports a 1977 tonnage of 4,377,937,031 pounds of sausage products. Our research with various protein sources is discussed. Emphasis is placed on soy protein products currently available and approved by government agencies. Formulations and requirements for satisfactory products is outlined with economic justifications for soy flour, concentrates and isolates. A thorough discussion of extruded and/or engineered foods is presented showing utilization of mechanically deboned meats, recovered meat proteins from pork and beef rendering, and vegetable proteins in combination with beef and pork. The nutritive values of mechanically deboned chicken and structured soy protein gave PERs over 3.0 with good amino acid balance.     

Technique for the Static Fatigue Testing of Fibers

An easy-to-use, low-cost method for static fatigue testing of fibers in harsh environments was developed. Stresses greater than 550 ksi (3791 MPa) are attainable yet the specimen is insensitive to external shock. The method gave good comparative results when used to test indium-coated fused silica fibers under distilled water or 2M NaCl solution.     

Computer-aided hierarchical diagrams

The user interface of a diagram-drawing program, DIAG2, is described. The user is provided with three basic constructs: the straight line, the segment of a circle and the block of text. These constructs may be assembled into larger groups. Thus a diagram can be built up in a hierarchical manner by the user. DIAG2 performs the unwrapping operations necessary to decompose the diagram into a set of straight line segments, which can be output to the appropriate display peripheral. No intelligence is required in the graphics device itself.