[en] Deep inelastic polarized lepton-nucleon scattering is reviewed in three lectures. The first lecture covers the polarized deep inelastic scattering formalism and foundational theoretical work. The second lecture describes the nucleon spin structure function experiments that have been performed up through 1993. The third lecture discusses implication of the results and future experiments aimed at high-precision measurements of the nucleon spin structure functions

[en] Results are presented on the analysis of CDHS test beam data using an iron-scintillator calorimeter exposed to electrons and pions in the energy range 10 to 140 GeV. Shower development is studied in order to extract information on calorimetric response to electrons and pions longitudinal and transverse shower profiles, shower containment and correlations, muon punch through and the effect on energy resolutions due to dead materials. 5 refs., 10 figs., 3 tabs

[en] Deep inelastic scattering experiments to measure the proton spin- dependent structure function were first pioneered in SLAC experiments in the 1970's [1]. These early experiments established the existence of large asymmetries in the spin structure of the proton predicted by the parton model. Despite the success, the results did not appear to be revealing new fundamental insights into the models. The experiments were, moreover, difficult, and SLAC's interest in constructing a linear collider to study the Z₀ boson ended the program to study in more detail the nucleon spin-dependent structure functions. In May of this year, SLAC reopened the study of this field of physics by approving experiment E142--an experiment to measure the neutron spin-dependent structure function. In this report, I describe the goals of experiment E142 and how we hope to achieve them

[en] A measurement of the nucleon spin asymmetries from deep inelastic scattering of polarized electrons by polarized ³He has been performed. The neutron spin structure function g₁ⁿ is extracted and used to test the Bjorken sum rule. The neutron integral assuming a simple Regge theory extrapolation at low x is ∫₀¹g₁ⁿ(x)dx = -0.022 ± 0.011. Combined with the EMC proton results, the Bjorken sum rule predicts a neutron integral of ∫₀¹g₁ⁿ(x)dx = -0.065 ± 0.018

[en] The author provides a summary of the proposed and published statistical (systematic) uncertainties from the world experiments on nucleon spin structure function integrals. By the time these programs are complete, there will be a vast resource of data on nucleon spin structure functions. Each program has quite different experimental approaches regarding the beams, targets, and spectrometers thus ensuring systematically independent tests of the spin structure function measurements. Since the field of spin structure function measurements began, there has been a result appearing approximately every five years. With advances in polarized target technology and high polarization in virtually all of the lepton beams, results are now coming out each year; this is a true signature of the growth in the field. Hopefully, the experiments will provide a consistent picture of nucleon spin structure at their completion. In summary, there are still many open questions regarding the internal spin structure of the nucleon. Tests of QCD via the investigation of the Bjorken sum rule is a prime motivator for the field, and will continue with the next round of precision experiments. The question of the origin of spin is still a fundamental problem. Researchers hope is that high-energy probes using spin will shed light on this intriguing mystery, in addition to characterizing the spin structure of the nucleon

[en] The US is at a critical junction. Global competition is now a reality for a large number of US businesses and, ultimately, almost all US businesses will compete to one degree or another in the global marketplace. Under these circumstances, maintaining and improving the standard of living of US citizens requires a plentiful supply of low-cost electric energy to reduce the cost of providing goods and services both in the US an abroad. At the same time, segments of the public demand increased environmental restrictions on the utility industry. If the electric utility industry is to successfully respond to the goals of reducing electricity costs, maintaining reliability, and reducing emissions, fuels technology research is critical. For coal-fired units, fuel cost typically represents from 60--70% of operating costs. Reducing fuel cost, reduces operating costs. This can provide revenue that could be used to finance emissions control systems or advanced type of boilers resulting from post-combustion research. At the same time, improving coal quality reduces emissions from existing boilers without the need for substantial capital investment by the utility. If quality improvements can be accomplished with little or no increase in fuel costs, an immediate improvement in emissions can be achieved without an increase in electricity costs. All of this is directly dependent on continued and expanded levels of research on coal with the cooperation and partnership between government and industry. The paper describes enhanced fuel technologies (use of waste coal, coal water slurries, biomass/composite fuels, improved dewatering technologies, precombustion control of HAPs, dry cleaning technologies, and international coal characterization) and enhanced emission control technologies

[en] This document represents a first step in the process of developing comprehensive value-impact methodology for the nuclear industry. It describes the development of the methodology and includes a discussion of the uses of cost-benefit or value-impact by other industries. This background is provided as a guide to the development of the methodology for the specific problems confronted by the nuclear industry. The use of benefit-cost analysis, or value-impact analysis, within the nuclear power industry has grown in recent years and is relied upon by both the regulatory community and the regulated industry. This report summarizes the state of the art of value-impact analysis as it affects these users. Relevant past experience in such fields as water resource development, transportation, environmental concerns, and health and medicine is reviewed. A critique of the applicability of existing value-impact analysis methods to nuclear safety decision problems is presented

[en] Published in summary form only

[en] A review of proton and neutron structure function measurements from fixed-target experiments is presented. Results on unpolarized structure functions have stabilized for x>0.1, and new results on lower x measurements are appearing. Recent results on the measurement of the neutron spin structure function are given and discussed in relation to previous surprising results from the proton spin structure function measurement. (author). 21 refs., 10 figs., 4 tabs

[en] Escherichia coli DNA, selectively labeled with ¹⁴C in the adenine moiety, was subjected in aqueous aerated solution to the action of γ-radiation. Two categories of products were obtained: those which had been eliminated from the chain by irradiation and were consequently found free in the solution, and those which had remained attached to the chain until they were cleaved off by hydrolysis. The optimum hydrolysis conditions differed from those suitable for thymine moiety. These compounds are: adenine, 4,6-dihydro-5-formamidopyrimidine, and 7,8-dihydro-8-oxoadenine. The formation of these derivatives as a function of the applied dose was determined, and a hypothesis concerning their formation is suggested