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Application of analytical electron microscopy to the study of intergranular corrosion in 304 stainless steel

Description: The technique of analytical electron microscopy in a scanning transmission electron microscope fitted with an energy dispersive x-ray spectrometer is used to measure the chromium depletion in sensitized 304 stainless steel along the grain boundaries. It is shown that such measurements could be misleading unless care is taken to properly choose the regions on the grain boundaries for such analysis.
Date: January 1, 1980
Creator: Pande, C S & Sabatini, R L
Partner: UNT Libraries Government Documents Department

The magnet components database system

Description: The philosophy, structure, and usage MagCom, the SSC magnet components database, are described. The database has been implemented in Sybase (a powerful relational database management system) on a UNIX-based workstation at the Superconducting Super Collider Laboratory (SSCL); magnet project collaborators can access the database via network connections. The database was designed to contain the specifications and measured values of important properties for major materials, plus configuration information (specifying which individual items were used in each cable, coil, and magnet) and the test results on completed magnets. These data will facilitate the tracking and control of the production process as well as the correlation of magnet performance with the properties of its constituents. 3 refs., 10 figs.
Date: January 1, 1990
Creator: Baggett, M. J. (Brookhaven National Lab., Upton, NY (USA)); Leedy, R.; Saltmarsh, C. & Tompkins, J. C. (Superconducting Supercollider Lab., Dallas, TX (USA))
Partner: UNT Libraries Government Documents Department

Dual photon absorptiometry: Validation of mineral and fat measurements

Description: Photons passing through human tissue undergo attenuation in relation to the specific chemical substances with which they interact. By selecting two appropriate photon energies and recording their attenuation, the investigator can solve simultaneous equations that subdivide body mass into two components: soft tissue and bone mineral ash. The aim of this paper is to describe and to validate the estimates of body composition derived by dual photon systems. The initial studies largely involved dual photon absorptiometers, although the discussion will also include the more recently developed dual energy x-ray absorptiometers. 13 refs., 7 figs., 4 tabs.
Date: January 1, 1989
Creator: Heymsfield, S. B.; Wang, J.; Sulet, M.; Lichtman, S.; Pierson, R. N. Jr. (Saint Luke's-Roosevelt Hospital Center, New York, NY (USA)); Kehayias, J. (Tufts Univ., Boston, MA (USA). USDA Human Nutrition Research Center on Aging at Tufts Univ.) et al.
Partner: UNT Libraries Government Documents Department

Neutron and x-ray diffuse scattering study of tetrathiofulvalene tetracyanoquinodimethane (TTF--TCNQ)

Description: Results of extensive x-ray and neutron scattering experiments are: (1) Below the Peierls transition taking place at 54/sup 0/K, two additional structural phase transitions are observed at 49/sup 0/K and 38/sup 0/K. (2) Above the Peierls transition two different precursor 1-d fluctuations have been observed. Suggestions for future studies are given. (LK)
Date: January 1, 1976
Creator: Comes, R & Shirane, G
Partner: UNT Libraries Government Documents Department

Health risk analysis for ingestion of contaminants from existing groundwater contamination at selected UMTRA project sites

Description: This study examines potential hazards to human health from the ingestion of chemicals in ground waters beneath and adjacent to four abandoned uranium mill-tailings sites: Gunnison, Colorado; Lakeview, Oregon; Monument Valley, Arizona; and Riverton, Wyoming. Chemicals of concern in the ground water near these sites include arsenic, cadmium, chromium, lead-210, molybdenum, nitrate, polonium-210, radium 226 and radium 228, selenium, sulfate, thorium-230, uranium and vanadium. Hazards to health were evaluated by implementing the method outlined in the Environmental Protection Agency's (EPA's) Superfund Public Health Evaluation Manual. Conservative assumptions in the method, and the effect of these on the risk estimates and EPA's indices of harm are discussed. Because the method has a number of built-in conservatisms, the estimated risks and indices only indicate sites and chemicals requiring further analysis. The chemicals and sites identified as presenting risk in this first screening step should be investigated in more detail. Necessary steps are given. Sites and chemicals identified as harmless in this initial screening can be eliminated from further consideration. 9 refs., 4 figs., 4 tabs.
Date: September 1, 1988
Creator: Hamilton, L. D.; Medeiros, W. H.; Meinhold, A.; Morris, S. C.; Moskowitz, P. D. & Nagy, J.
Partner: UNT Libraries Government Documents Department

Status of the Relativistic Heavy Ion Collider

Description: Accelerator Physics issues, such as the dynamical aperture, the beam lifetime and the current--intensity limitation are carefully studied for the Relativistic Heavy Ion Collider at Brookhaven National Laboratory. The single layer superconducting magnets, of 8 cm coil inner diameter, satisfying the beam stability requirements have also been successfully tested. The proposal has generated wide spread interest in the particle and nuclear physics. 1 ref., 4 figs., 3 tabs.
Date: April 25, 1990
Creator: Lee, S. Y.
Partner: UNT Libraries Government Documents Department

Calculation of closed orbit errors due to misalignment of combined function magnets with large bend angle

Description: The effects of different misalignments of bending magnets with very small bending radius ({rho} < lm) and very large bending angle ({Phi}{sub b} = 180, in some cases 360{degree}) are discussed. These magnets are represented by n segments. A method is given to calculate misalignments of a segment at any {alpha} < {Phi}{sub b} bend angle from the misalignments of the whole (rigid) magnet. This method is then used to calculate distorted closed orbits for the SXLS ring. 6 refs., 10 figs., 1 tab.
Date: January 1, 1990
Creator: Bozoki, E. S.
Partner: UNT Libraries Government Documents Department

Xeroderma pigmentosum: damage to DNA is involved in carcinogenesis. [Studies in cultured human xeroderma pigmentosum cells]

Description: The hereditary disease Xeroderma Pigmentosum (XP) is characterized by a high sensitivity to sunlight and the appearance at an early age of nonmelanoma skin cancer. The prevalence of both nonmelanoma and malignant melanoma among a population of XP individuals is several orders of magnitude greater than in the general population. The connection between photobiology and cancer arises because cells of XP individuals are defective in one or more of the mechanisms for repairing UV damage to DNA. The repair mechanisms are outlined schematically and discussed.
Date: January 1, 1976
Creator: Setlow, R B; Ahmed, F E & Grist, E
Partner: UNT Libraries Government Documents Department

A search for long-lived low mass states coupling to e sup + e sup minus

Description: Since the observation by the EPOS group at GS in 1985 of correlated electron-positron pair emission in superheavy ion-atom collision systems there have been many attempts to explain the phenomenon. The EPOS coincidence data show a series of narrow sum-energy lines in the laboratory kinetic energy range 610--820 keV. Recently, similar observations were reported by another group. For lack of conventional explanations for the narrow sum peaks, the production of a previously unobserved neutral system in the heavy ion collision which subsequently decays to e{sup +}e{sup {minus}} was considered as a possibility. If such an object were to exist, then it should be possible to produce it through the s-channel of ordinary electron-positron scattering. We describe the results of a set of experiments to search for such a neutral object directly in e{sup +}e{sup {minus}} collisions.
Date: January 1, 1990
Creator: Henderson, S. D.; Greenberg, J. S.; McDonough, J.; Phlips, B. F. (Yale Univ., New Haven, CT (USA). Wright Nuclear Structure Lab.); Kumar, P. A.; Huomo, H. et al.
Partner: UNT Libraries Government Documents Department

Closed orbit errors and correction in the SXLS ring

Description: SXLS is an electron synchrotron/storage ring, used as an X-ray lithography source, with a critical wavelength of {lambda}=10 A. It has a circumference of 8.5 m and its main elements are two 180{degree} combined function dipole, four quadrupoles and two sextupoles. The horizontal and vertical tunes are 1.415 and 0.415, respectively. The machine is being constructed in two phases. In Phase 1 and 2 it will run at 200 and 696 Mev using conventional (warm) and superconducting bending magnets, respectively. All other elements, as well as the lattice functions will be the same in the two phases. The constraint that the exit slits impose on the photon beamlines, requires that the source point, that is the closed orbit be controlled to better then {plus minus}3 mm horizontally, {plus minus}2 mm and {plus minus}1 mrad vertically. The following is a study of the expected closed orbit distortion in the ring as well as of the orbit monitor/corrector schemes necessary to correct the orbit. 10 figs.
Date: May 1, 1990
Creator: Bozoki, E. S.
Partner: UNT Libraries Government Documents Department

Needs and status of CTR materials irradiation facilities, an introduction to 14-MeV neutron sources

Description: This paper reviews the requirement of neutron sources for radiation damage studies for fusion reactors, describes existing and planned facilities and serves as an introduction to several papers presented at this conference on proposed deuteron linac-neutron generators and other papers related to neutron sources.
Date: January 1, 1976
Creator: Grand, P & Goland, A N
Partner: UNT Libraries Government Documents Department

Relay testing at Brookhaven National Laboratory

Description: Brookhaven National Laboratory (BNL) is conducting a seismic test program on relays. The purpose of the test program is to investigate the influence of various designs, electrical and vibration parameters on the seismic capacity levels. The first series of testing has been completed and performed at Wyle Laboratories. The major part of the test program consisted of single axis, single frequency sine dwell tests. Random multiaxis, multifrequency tests were also performed. Highlights of the test results as well as a description of the testing methods are presented in this paper. 10 figs.
Date: January 1, 1989
Creator: Bandyopadhyay, K. & Hofmayer, C.
Partner: UNT Libraries Government Documents Department

Problems of the compensation methods for the spin depolarizing resonances in the strong focusing synchrotron

Description: The achievement of a high energy polarized proton beam requires the reduction of depolarization during acceleration. This depolarization will occur at spin resonances where the spin precession frequency equals that of a horizontal magnetic field component. There are basically two types of first order depolarizing resonances. One type is an intrinsic resonance which is excited by the periodical focusing structure of the machine. The resonance occurs at {gamma}G=nN {plus minus} {nu}{sub z}, where {gamma}, G, n, N and {nu}{sub z}are the Lorentz energy factor the gryomagnetic factor, and integer, the superperiodicity number of the machine and the vertical betatron tune, respectively. The resonance strength is proportional to the vertical betatron oscillation amplitude. The other type is an imperfection resonance which is due to the magnet misalignment leading to vertical closed orbit distortion (COD). This resonance occurs at {gamma}G=nN{plus minus}k, where k is the harmonic number of the vertical COD. The resonance strength is proportional to the amplitude of the vertical COD. This paper reports on phenomena and problems about depolarizing resonances encountered in accelerating polarized protons at the AGS and the KEK PS. 31 refs.
Date: May 15, 1990
Creator: Sato, Hikaru (National Lab. for High Energy Physics, Tsukuba, Ibaraki (Japan))
Partner: UNT Libraries Government Documents Department

Concepts and observations on the regulation of granulocyte production. [In dogs and man]

Description: The neutrophilic granulocyte count in the blood responds quickly to infection in dogs. The ratio of non-segmented to segmented neutrophils increased progressively after induction of bacterial pneumonia showing a rapid release from the bone marrow of less mature cells. Under normal steady state conditions there are modest fluctuations in the blood granulocyte count, presumably the result of interplay amongst factors regulating the sojourn time in the blood, rate of release of granulocytes from the bone marrow, their rate of production in the bone marrow and the factors that inhibit marrow granulocyte production. The average sojourn time of granulocytes in the blood of man is very variable with a large standard error. After induction of infection marked changes in the granulocytic specific activity curve (GSAC) are observed following autotransfusion of labeled cells. Early in infection the GSAC shows a rapid decrease implying a faster input of unlabeled cells from the bone marrow. Later the GSAC approaches normal and then, during recovery from infection, becomes longer than normal, implying that input of unlabeled granulocytes from the marrow is drastically reduced. Factors influencing the mechanism of release of granulocytes from the marrow in man are discussed. 41 references.
Date: January 1, 1976
Creator: Cronkite, E P; Burlington, H; Chanana, A D; Joel, D D; Reincke, U & Stevens, J
Partner: UNT Libraries Government Documents Department

Polarized beams at the ZGS and the AGS

Description: I have had, and still do, a feeling of deja Vu as I have gone through the development of the polarized beam at the AGS. There were many similarities both scientifically and sociologically, and of course, some significant differences between the AGS and the ZGS. We traded the 12 GeV ZGS for the 28 GeV AGS, we traded Ron Martin for Derek Lowenstein, but having the lowest energy, high energy machine did not change. Paraphrasing some remarks of Bob Sachs, the AGS replaced the ZGS as the tail of the dog, and it appears that now the tail loppers are again on the loose. You will probably see them again somewhere in the world using body english to help polarize a beam. Basically, I would like to describe a little of the progression of events and the hardware in both accelerators that allowed Kent and his colleagues to do a great deal of very interesting spin physics. 6 refs., 30 figs.
Date: January 1, 1989
Creator: Ratner, L. G.
Partner: UNT Libraries Government Documents Department

Laboratory studies of free radical reactions in cloudwater

Description: Reactions in cloudwater can be important pathways for chemical transformation of atmospheric trace gases because of high solubility of reagent gases, rapid aqueous-phase kinetics, and large thermodynamic driving force. A key cloudwater reaction is oxidized of dissolved SO{sub 2} and H{sub 2}O{sub 2}. It is thus important to understand processes controlling H{sub 2}O{sub 2} formation in the atmosphere by gas- and aqueous-phase reactions of HO{sub 2} free radicals. A concern with models of free radical chemistry in cloudwater is that of the applicability of present chemical kinetic schemes to such complex milieus. This concern arises because, at the low free-radical concentrations expected for cloudwater, reactions of radicals with trace impurities are favored over radical-radical reactions, which dominate at high radical concentrations commonly employed in laboratory investigations. We report initial results of a study in which the rate of change in H{sub 2}O{sub 2} concentration is monitored in synthetic and authentic cloudwater in which HO{sub 2} radicals are produced by {sup 60}Co{gamma} radiolysis at rates comparable to those expected upon transfer of HO{sub 2} from interstitial cloud air to cloudwater. These results indicate that micromolar concentrations of Fe(III) decrease H{sub 2}O{sub 2} yields and can even lead to H{sub 2}O{sub 2} loss rather than formation. Implications on cloud chemistry will be discussed. 14 refs., 2 figs.
Date: November 1, 1989
Creator: Schwartz, S. E. & Weinstein-Lloyd, J.
Partner: UNT Libraries Government Documents Department

Transverse mode coupling in RHIC

Description: In the Proceedings of the Workshop on the RHIC Performance, it was stated that the transverse mode coupling instability, posed a potential intensity limitation for protons. This was based on the expression I{sub b} = 4(E{sub t}/qe) Q{sub s} 4 {radical}{pi} {sigma} {ell}/(Im (Z{sub {perpendicular}}) < {beta}{sub {perpendicular}} > R 3) where E{sub t} is the total energy, q the charge state, Q{sub s} the synchrotron tune, < {beta}{sub {perpendicular}} > the average beta function, R the machine radius, and {sigma}{sub {ell}} the rms bunch length of a Gaussian distribution in longitudinal phase space. For a < {beta}{sub {perpendicular}} > of 55 m and 10{sup 11} protons/bunch, the allowed impedance Z{sub {perpendicular}} for protons at injection, where Q{sub s} = 0.11 {times} 10{sup {minus}3}, would be less than 1.2 M{Omega}/m. The purpose of this report is to discuss the consequences of two factors that were omitted in this equation, which comes from the ZAP program, to RHIC. These are the space charge impedance and the incoherent tune spread of the beam.
Date: February 21, 1990
Creator: Raka, E.
Partner: UNT Libraries Government Documents Department

Documentation routines for MODEL. [For CDC 6600 or 7600 computer]

Description: MODEL/LINDA/GRAPEL is a unified logic design automation system consisting of a synthesis program (LINDA), a simulation program (MODEL), and a documentation program (GRAPEL). The base hardware description language is briefly covered. Extensibility features to nonhardware aspects of digital systems designs are discussed. The algorithms of GRAPEL, (Graph for Engineering Language), particularly the device placement and inter-connect routing strategies, are explained. Several examples and applications are offered. 6 figures, 3 tables.
Date: September 1, 1976
Creator: Osterer, L & Peskin, A M
Partner: UNT Libraries Government Documents Department

Basic physics of one-dimensional metals. [Lectures, electron gas]

Description: Largely nonmathematical qualitative lectures are given on the basic physics of nearly one-dimensional conductors. The main emphasis is placed on the properties of a purely one-dimensional electron gas. The effects of a real system having interchain coupling, impurities, a compressible lattice, lattice distortions and phonon anomalies are discussed. (JFP)
Date: January 1, 1976
Creator: Emery, V. J.
Partner: UNT Libraries Government Documents Department

BNL Archive and Dissemination System. [For accessing data files constructed at separate places and times]

Description: The Brookhaven National Laboratory Archive and Dissemination System (BNLADS) is designed to deal with the record keeping associated with archiving and disseminating sequential files through a computer network. This data base management system (DBMS) is implemented in a host language that is a subset of PL/I. The stored sequential files that can be dealt with by the BNLADS must be in character mode (ASCII, BCD, EBCDIC). The accessing of fields is specified by a format description which allows for forward processing of fields only. The structure of a case type statement allows for a data field determining a format sequence from a set of format sequences. A data description language (DDL) was devised to describe the accessing sequence of stored sequential files. A data model definition gives the user a view of the content of each stored sequential file. The DDL requires all field type references to contain the field name, so that the BNLADS can access all stored sequential files by logical field name and can write stored sequential files by stating the logical field name without the necessity of referring to formats. The BNLADS is architected in a stratified form in which the application programs are built on the accessing procedures. Below this level, the procedures become dependent upon the compiler implementation of the host language PL/I and the operating system. In this manner, BNLADS can be used on most manufacturer&#x27;s hardware and exhibits the desired property of data independence. 5 figures.
Date: February 1, 1977
Creator: Abbey, S; Fuchel, K; Heller, J; Lin, K S & Osterer, L
Partner: UNT Libraries Government Documents Department

Brookhaven National Laboratory Burner-Boiler/Furnace Efficiency Test Project. Annual fuel use and efficiency reference manual: hydronic equipment

Description: A procedure for calculating the annual fuel use and seasonal efficiency of a particular heating unit has been developed at Brookhaven National Laboratory based upon laboratory measurement of steady state and part-load efficiency. The Annual Fuel Use and Efficiency (AFUE) calculation procedure provides a simple and direct method by which detailed efficiency measurements can be translated to annual fuel use data for ranges of field variables including: geographic location, building design heat load, domestic hot water usage, and design fuel firing rate. The direct efficiency measurements performed in the laboratory in conjunction with the AFUE procedure provide a standard quantitative method for comparison of heating units on a common and realistic basis.
Date: December 1, 1977
Creator: Batey, J; Hoppe, R; Berlad, A L; Allen, T & McDonald, R
Partner: UNT Libraries Government Documents Department

Critical properties of a simple spin glass model

Description: The Mattis spin glass model is described as following from a particular quenched random solid solution picture, and its zero-field properties are discussed. The random field model is reviewed. The application to the spin glass problem is made and the more general scaling theory presented, and the limitations of the model are discussed. (GHT)
Date: January 1, 1976
Creator: Aharony, A & Imry, Y
Partner: UNT Libraries Government Documents Department

Medical cyclotrons

Description: Cyclotrons as tools for therapy and for the production of radionuclides for use in nuclear medicine have been extensively reviewed in the literature. The current world status with respect to cyclotrons used primarily for research, development and application in nuclear medicine is reviewed here in the context of geographical distribution and type of use, presently available commercial types, machine characteristics and trends. Aspects of design requirements from a user perspective such as machine, beam and target characteristics are covered. Some special problems concerning many factors which can lead to effective production of the desired radionuclide or product are considered in light of machine characteristics. Consideration is also given to future directions for accelerators in nuclear medicine.
Date: January 1, 1976
Creator: Wolf, A P
Partner: UNT Libraries Government Documents Department

Overview of clustered nuclear siting and its technical aspects

Description: In recent years there has been growing discussion over the ability of new siting approaches to redress the increasing problems of nuclear plant location. This debate has focused largely on three alternatives to the conventional siting of nuclear reactors; floating offshore plants; underground siting; and nuclear energy centers (NECs) consisting of up to 40 reactors at a single site, and, possibly, including fuel cycle facilities within their perimeter. Congressional interest in energy centers, especially in view of concern over the proliferation of nuclear reactors throughout the country, and with the special problems of safeguards over fuel reprocessing and the use of plutonium as a reactor fuel, resulted in a mandate to the Nuclear Regulatory Commission to make a comprehensive analysis of the energy center concept. A common finding of all of the studies of the nuclear energy center concept thus far is that there appear to be no technical considerations that would clearly preclude energy centers. With the one significant exception regarding the meteorological impacts of the concentration of heat and moisture releases to the atmosphere, engineering solutions would appear to be quite adequate to address any difficulties of environmental impact, electrical systems management, water supply or construction management, and to keep the overall physical environmental impact of an energy center not significantly different to that of an equivalent number of dispersed reactors.
Date: September 1, 1976
Creator: Meier, P M
Partner: UNT Libraries Government Documents Department