[en] The predicted increase in world demand for electricity requires that the gift of nuclear energy that has served developed nations must not be wasted. The development of nuclear energy is hampered by the absence of a clear and unequivocal policy regarding the storage and disposal of radioactive waste and is seen by a significant section of the public as a threat to their rights. Public opposition may cause the demise of nuclear electric power in developed nations and proscribe its use in the third world. (author)

[en] In the United Kingdom the term ALARA, ''as low as reasonably achievable'' and the term ALARP ''as low as reasonably practicable'' are used in regulations, in conditions in licenses, in assessment principles and in guidance notes used in the nuclear industry. In fact the ALARA principle is a cornerstone on which much of radiation protection regulation is based. The words ''reasonably practicable'' in ALARP have an established meaning in UK law and are used extensively in statutes and regulations, in particular The Health and Safety Act 1974. The Select Committee of the House of Lords on the European Communities in 1986 concluded that public opinion will play a much larger part in deciding the future of nuclear power than is usual with questions of science and technology. Under the circumstances it is important to industry and the general public for the terms used in legislation to be clear and unambiguous. This paper by distinguishing the terms ALARA/ALARP, sets the scene for a more disciplined use of the terms. (author)

No abstract available

[en] The argument for justification of the nuclear electric power development is examined in the following terms: practicability, economic and new build-up; effects on health; safety; security; the environment; issues and opportunities to overcome barriers to its development are identified. Uncertainties are identified in the areas of health and security that must be acknowledged and tackled from an international base. The practicalities of deployment of nuclear energy to offset world poverty are discussed; the principle objectives identified and legal measures to overcome barriers to the continuing development of the nuclear energy are suggested. (author)

[en] This document is a final technical report describing the accomplishments of the medium/high energy nuclear physics research program at the University of Texas at Austin. The research program had four main thrusts, only one of which can be considered as measurements of N-N parameters: (1) finishing the data analyses associated with recent LAMPF and TRIUMPF N-N experiments, whose overall purpose has been the determination of the nucleon-nucleon amplitudes, both for isospin 0 and 1 at medium energies; (2) continuing work on BNL E871, a search for rare decay modes of the K_L; (3) work on the RHIC-STAR project, an experiment to create and study a quark gluon plasma and nuclear matter at high energy density; (4) beginning a new AGS experiment (E896) which will search for the lowest mass state of the predicted strange di-baryons, the Ho, and other exotic states of nuclear matter through nucleus-nucleus collisions

[en] Using a one-dimensional hydrodynamic code we have simulated the radial evolution of heliospheric disturbances produced by slow coronal mass ejections (CMEs) embedded in much faster leading and trailing ambient solar wind. We find that pressure gradients induced by initial speed differences between slow CMEs and faster ambient wind can produce large accelerations of the CMEs, eventually nearly up to the speed of the ambient wind. The compressions, rarefactions, and shocks associated with this acceleration persist to large heliocentric distances. Comparison with observations reveals that such effects helped accelerate two of the six-high-latitude, CME events observed by Ulysses. copyright American Geophysical Union 1996

[en] This fourth part concerns the radioisotopes and includes: the risks bound to the production and the medical and industrial use of radioisotopes, the regulation of the users of ionizing radiation and the relevance of the experience of nuclear facility operators in litigation, problems relative to the medial, scientific and industrial use of radioelements, standards and rules in the use of radioactive sources in medical sector in Brazil. (N.C.)

No abstract available

[en] Ulysses observations at mid and high heliographic latitudes have revealed a solar wind devoid of the large variations in density, temperature, and speed that are commonly observed at low latitudes. One event, however, observed on May 1, 1996, while Ulysses was located at ∼3.7AU and 38.5 degree, stands out in the plasma data set. The structure, which is unique in the Ulysses high-latitude data set, is seen as a drop in proton density of almost an order of magnitude and a comparable rise in proton temperature. The event lasts ∼3(1)/(2) hours giving the structure a size of ∼9.6x10⁶km (0.06 AU) along the spacecraft trajectory. Minimum variance analysis of this interval indicates that the angle between the average magnetic field direction and the minimum variance direction is ∼92 degree, suggesting that the 'density hole' may be approximated by a series of planar slabs separated by several tangential discontinuities. We discuss several possible explanations for the origin of this structure, but ultimately the origin of the density hole remains unknown. copyright 1998 American Geophysical Union

[en] A recent experiment has measured analyzing powers in d(rvec p,π^-pp)p in a geometry which selected the quasifree two-body reaction rvec pn→π^-pp(¹S₀). Analysis of the results indicated a significant contribution from a very-short-range part of the nucleon-nucleon interaction. We show that the analyzing power data measured in the above experiment is reasonably well described by a unitary NN → NNπ model containing only the one-pion-exchange driving force