[en] Two-powder processes for the synthesis of superconducting (Bi, Pb)-2223/Ag-clad wires by the oxide-powder-in-the-robe are provided. The first precursor powder, of nominal stoichiometry CaCuO_x, is a solution-synthesized mixture of Ca_0.45Cu_0.55O₂ and CaO. Using these oxide precursor mixtures, superconducting tapes with well-aligned grains and reproducible critical current densities J_c in the range of 20,000 to 26,000 A/cm² at 75 K in self-field after annealing less than 200 hours were obtained. 2 figs

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[en] The use of natural gas in electric power generation is discussed. The advantages of using natural gas in power generation are environmental (reduces sulfur dioxide, nitrogen oxides, and carbon dioxide emissions) and economic (produces power cheaper and more reliably than any alternative fuel). The disadvantages of using natural gas as a boiler fuel are: (1) difficulty in attaining long-term contracts; (2) reliance on spot-markets also problematic; (3) curtailments; (4) insufficient pipeline capacity; and (5) day-to-day operational concerns. Methods for responding to these concerns are presented

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[en] The purpose of the report is to present several statistical models that have been developed to predict wood fuel use in residential applications based on a review of available residential wood use surveys conducted for local area planning or SIP inventory development. These models could be used to improve the emissions estimates for residential wood fuel consumption in areas that are not required to and therefore are not likely to conduct household surveys. The models may also be included in the Area and Mobile Source Subsystem (AMS) of the Aerometric Information Retrieval System (AIRS)

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[en] Apart from studies of the microwave background, direct exploration of the universe beyond the established redshifts of ordinary galaxies (z is approximately 1) has, at least so far, had to rely on the detection and study of high redshift QSOs. This review covers work, principally on quasi-stellar objects with large redshifts, that has come to the author's attention in the interval May 1978 to February 1981. He has assumed, except where otherwise noted, that redshift is an indicator of distance in a zero pressure Friedmann cosmology with zero cosmological constant, and zero deceleration parameter. A rather detailed discussion of some of the techniques used to discover high-redshift QSOs, recent major surveys for high-redshift objects and efforts to quantify selection efforts are presented. Sections are devoted to the distribution of QSOs in the sky, the continuous spectrum of QSOs and the nature of the central source of energy, the emission-line spectrum, absorption lines in QSO spectra and gravitational lenses. (Auth./C.F.)