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Sample records for chemistry division barc

  1. Division of Analytical Chemistry, 1998

    DEFF Research Database (Denmark)

    Hansen, Elo Harald

    1999-01-01

    The article recounts the 1998 activities of the Division of Analytical Chemistry (DAC- formerly the Working Party on Analytical Chemistry, WPAC), which body is a division of the Federation of European Chemical Societies (FECS). Elo Harald Hansen is the Danish delegate, representing The Danish...... Chemical Society/The Society for Analytical Chemistry....

  2. Scientometric Dimensions of Innovation Communication Productivity of the Chemistry Division at Bhabha Atomic Research Centre

    OpenAIRE

    Kademani, B. S.; Surwase, Ganesh; Anil Sagar, *; Lalit Mohan; Gaderao, C. R.; Anil Kumar; Kalyane, V. L.; Prakasan, E.R.; Vijai Kumar, *

    2005-01-01

    Scientrometric analysis of 1733 papers published by the teams comprising total of 926 participating scientists at Chemistry Division of Bhabha Atomic Research Centre (BARC) during 1970-1999 in the domains: Radiation & Photochemistry and Chemical Dynamics (649), Solid State Studies (558), Inorganic, Structural and Materials Chemistry (460) and Theoretical Chemistry (66) were analysed for yearwise productivity, authorship pattern and collaboration. The highest number of publicationsin a year we...

  3. Analytical Chemistry Division's sample transaction system

    International Nuclear Information System (INIS)

    The Analytical Chemistry Division uses the DECsystem-10 computer for a wide range of tasks: sample management, timekeeping, quality assurance, and data calculation. This document describes the features and operating characteristics of many of the computer programs used by the Division. The descriptions are divided into chapters which cover all of the information about one aspect of the Analytical Chemistry Division's computer processing

  4. Fuel Chemistry Division: progress report for 1987

    International Nuclear Information System (INIS)

    The progress of research and development activities of the Fuel Chemistry Division of the Bhabha Atomic Research Centre, Bombay, during 1987 is reported in the form of summaries which are arranged under the headings: Fuel Development Chemistry, Chemistry of Actinides, Chemical Quality Control of Fuel, and Studies related to Nuclear Material Accounting. A list of publications by the members of the Division during the report period is given at the end of the report. (M.G.B.). refs., 15 figs., 85 tabs

  5. Fuel Chemistry Division: progress report for 1985

    International Nuclear Information System (INIS)

    Fuel Chemistry Division was formed in May 1985 to give a larger emphasis on the research and development in chemistry of the nuclear fuel cycle. The areas of research in Fuel Chemistry Division are fuel development and its chemical quality control, understanding of the fuel behaviour and post irradiation examinations, chemistry of reprocessing and waste management processes as also the basic aspects of actinide and relevant fission product elements. This report summarises the work by the staff of the Division during 1985 and also some work from the previous periods which was not reported in the progress reports of the Radiochemistry Division. The work related to the FBTR fuel was one of the highlights during this period. In the area of process chemistry useful work has been carried out for processing of plutonium bearing solutions. In the area of mass spectrometry, the determination of trace constituents by spark source mass spectrometry has been a major area of research. Significant progress has also been made in the use of alpha spectromet ry techniques for the determination of plutonium in dissolver solution and other samples. The technology of plutonium utilisation is quite complex and the Division would continue to look into the chemical aspects of this technology and provide the necessary base for future developments in this area. (author)

  6. Accelerator development in BARC

    International Nuclear Information System (INIS)

    Charged particle accelerators have played crucial role in the field of both basic and applied sciences. This has been possible because the accelerators have been extensively utilized from unraveling the secrets of nature to diverse applications such as implantation, material modification, medical diagnostics and therapy, nuclear energy and clean air and water. The development of accelerators in BARC can be categorized in two broad categories namely proton and heavy ion based accelerators and electron based accelerators. The heavy ion accelerators with sufficiently high energies are currently being used for conducting frontline nuclear and allied research whereas the electron accelerators are being routinely used for various industrial applications. Recently, there is a strong interest for developing the high energy and high intensity accelerators due to their possibility of effective utilization towards concept of energy amplification (Accelerator Driven System), incineration nuclear waste and transmutation. This talk will discuss details of the accelerator development program in BARC with particular emphasis on the recent development at Low Energy High Intensity Proton Accelerator (LEHIPA) Facility in Ion Accelerator Development Division, BARC. (author)

  7. Chemistry Division : Annual progress report of 1974

    International Nuclear Information System (INIS)

    Research and development activities (during 1974) of the Chemistry Division of the Bhabha Atomic Research Centre, Bombay, are described. Some of the activities of particular interest to nuclear science and technology are: (1) chemistry-based problems of the operating power reactors such as development of a decontaminating solution for power reactors, correlation of iodine-131 levels in the primary heat transport system of a reactor with its operation (2) release of fission gases like xenon from ceramic fuels and (3) radiation chemistry of nitrate solutions (M.G.B.)

  8. Chemistry Division: progress report (1983-84)

    International Nuclear Information System (INIS)

    This is the seventh progress report of the Chemistry Division covering the two years 1983 and 1984. The main emphasis of the Division continues to be on basic research though spin offs in high technology areas are closely pursued. Laboratory facilities have been considerably augmented during this period. Besides the design and fabrication of a crossed molecular beam chemiluminescence apparatus, a 80 MHz FTNMR and a 5nsec. excimer laser kinetic spectrometer were acquired; a 5nsec. pulsed electron accelerator would be installed in 1985. The research and development projects taken up during the VI Five Year Plan have achieved considerable progress. Only brief accounts of investigations are presented in the report. (author)

  9. Analytical Chemistry Division: annual report (for) 1986

    International Nuclear Information System (INIS)

    The Research and Development (R and D) activities of the Analytical Chemistry Division of the Bhabha Atomic Research Centre, Bombay, during 1986 are reported in the form of individual summaries. Analytical consultancies to outside organisations are also described in brief. Information regarding number of samples analysed, publications, invited talks, award of research degrees, training imparted to scientists from R and D organisations in the country and abroad etc. is given in the appendices at the end of the report. (M.G.B.)

  10. Analytical Chemistry Division : annual report (for) 1985

    International Nuclear Information System (INIS)

    An account of the various activities of the Analytical Chemistry Division of the Bhabha Atomic Research Centre, Bombay, during 1985 is presented. The main function of the Division is to provide chemical analysis support to India's atomic energy programme. In addition, the Division also offers its analytical services, mostly for measurement of concentrations at trace levels to Indian industries and other research organization in the country. A list of these determinations is given. The report also describes the research and development (R and D) activities - both completed and in progress, in the form of individual summaries. During the year an ultra trace analytical laboratory for analysis of critical samples without contamination was set up using indigenous material and technology. Publications and training activities of the staff, training of the staff from other institution, guidance by the staff for post-graduate degree and invited talks by the staff are listed in the appendices at the end of the report. (M.G.B.)

  11. Nuclear Chemistry Division annual report FY83

    International Nuclear Information System (INIS)

    The purpose of the annual reports of the Nuclear Chemistry Division is to provide a timely summary of research activities pursued by members of the Division during the preceding year. Throughout, details are kept to a minimum; readers desiring additional information are encouraged to read the referenced documents or contact the authors. The Introduction presents an overview of the Division's scientific and technical programs. Next is a section of short articles describing recent upgrades of the Division's major facilities, followed by sections highlighting scientific and technical advances. These are grouped under the following sections: nuclear explosives diagnostics; geochemistry and environmental sciences; safeguards technology and radiation effect; and supporting fundamental science. A brief overview introduces each section. Reports on research supported by a particular program are generally grouped together in the same section. The last section lists the scientific, administrative, and technical staff in the Division, along with visitors, consultants, and postdoctoral fellows. It also contains a list of recent publications and presentations. Some contributions to the annual report are classified and only their abstracts are included in this unclassified portion of the report (UCAR-10062-83/1); the full article appears in the classified portion (UCAR-10062-83/2)

  12. Nuclear Chemistry Division annual report FY83

    Energy Technology Data Exchange (ETDEWEB)

    Struble, G. (ed.)

    1983-01-01

    The purpose of the annual reports of the Nuclear Chemistry Division is to provide a timely summary of research activities pursued by members of the Division during the preceding year. Throughout, details are kept to a minimum; readers desiring additional information are encouraged to read the referenced documents or contact the authors. The Introduction presents an overview of the Division's scientific and technical programs. Next is a section of short articles describing recent upgrades of the Division's major facilities, followed by sections highlighting scientific and technical advances. These are grouped under the following sections: nuclear explosives diagnostics; geochemistry and environmental sciences; safeguards technology and radiation effect; and supporting fundamental science. A brief overview introduces each section. Reports on research supported by a particular program are generally grouped together in the same section. The last section lists the scientific, administrative, and technical staff in the Division, along with visitors, consultants, and postdoctoral fellows. It also contains a list of recent publications and presentations. Some contributions to the annual report are classified and only their abstracts are included in this unclassified portion of the report (UCAR-10062-83/1); the full article appears in the classified portion (UCAR-10062-83/2).

  13. Environmental Chemistry Division annual report, 1989

    International Nuclear Information System (INIS)

    The research activities making up the programs in the Environmental Chemistry Division of the Department of Applied Science are presented. Some of the more significant accomplishments during 1989 are described and plans for 1990 are discussed briefly. Publications for the period are listed and abstracts are provided. Research objectives and principal investigators are given for each of the active programs. A list of personnel and collaborators during the past year is presented. The support distribution of FY 1989 is approximately 85% from the Department of Energy (65% Office of Health and Environmental Research), and 15% other agencies (principally from the Electric Power Research Institute)

  14. Environmental Chemistry Division annual report, 1989

    Energy Technology Data Exchange (ETDEWEB)

    Newman, L.

    1990-01-01

    The research activities making up the programs in the Environmental Chemistry Division of the Department of Applied Science are presented. Some of the more significant accomplishments during 1989 are described and plans for 1990 are discussed briefly. Publications for the period are listed and abstracts are provided. Research objectives and principal investigators are given for each of the active programs. A list of personnel and collaborators during the past year is presented. The support distribution of FY 1989 is approximately 85% from the Department of Energy (65% Office of Health and Environmental Research), and 15% other agencies (principally from the Electric Power Research Institute).

  15. Isotope and Nuclear Chemistry Division annual report, FY 1988

    International Nuclear Information System (INIS)

    This report describes some of the major research and development programs of the Isotope and Nuclear Chemistry Division during FY 1988. The report includes articles on weapons chemistry, biochemistry and nuclear medicine, nuclear structure and reactions, and the INC Division facilities and laboratories

  16. Analytical Chemistry Division's sample transaction system

    Energy Technology Data Exchange (ETDEWEB)

    Stanton, J.S.; Tilson, P.A.

    1980-10-01

    The Analytical Chemistry Division uses the DECsystem-10 computer for a wide range of tasks: sample management, timekeeping, quality assurance, and data calculation. This document describes the features and operating characteristics of many of the computer programs used by the Division. The descriptions are divided into chapters which cover all of the information about one aspect of the Analytical Chemistry Division's computer processing.

  17. Water Chemistry Division Progress Report (April 1983 - April 1985)

    International Nuclear Information System (INIS)

    The research and development work of the Water Chemistry Division during the period from April 1983 to April 1985 is reported in the form of individual summaries. The activities of the Division cover the following fields: water and steam chemistry, high temperature studies, single crystal structure by x-ray diffraction, vriable temperature, x-ray powder studies, thermal analysis and thermophysical properties of rare earth compounds and uranium chemistry. (author)

  18. Proceedings of BARC golden jubilee year DAE-BRNS topical symposium on role of analytical chemistry in nuclear technology

    International Nuclear Information System (INIS)

    Among the various disciplines in Chemistry, Analytical Chemistry is unique, because it is an integral part of every aspect of technology- product and process development and deployment. In Nuclear Industry, the quality assurance criteria are very stringent. And truly, Analytical Chemistry has continued to play a pivotal role in the entire nuclear fuel cycle, since the beginning of the Indian Atomic Energy Programme. The conference covers invited talk, nuclear materials, reactor systems, thorium technology, alternate energy sources, biology, agriculture and environment, water technology, isotope, radiation and laser technology, development of analytical instruments, and reference materials and inter-comparison exercises. Papers relevant to INIS are indexed separately. (author)

  19. Fuel Chemistry Division annual progress report for 1986

    International Nuclear Information System (INIS)

    The research and development activities of the Fuel Chemistry Division during 1986 are reported in the form of summaries. These activities mainly deal with nuclear fuel development, the chemistry of actinides and solid and solution state, analytical methods for chemical quality control of fuels and other related materials. (M.G.B.)

  20. Fuel Chemistry Division annual progress report for 1990

    International Nuclear Information System (INIS)

    The progress report gives brief descriptions of the various activities of the Fuel Chemistry Division of Bhabha Atomic Research Centre, Bombay for the year 1990. The descriptions of activities are arranged under the headings: Fuel Development Chemistry, Chemistry of Actinides, Quality Control of Nuclear Fuels, and studies related to Nuclear Materials Accounting. At the end of the report, a list of papers published in journals and presented at various conferences/symposia is also given. (author). 7 figs., 52 tabs

  1. American Chemical Society, Division of Environmental Chemistry

    International Nuclear Information System (INIS)

    Separate abstracts were prepared for 161 papers of this divisional meeting for the US Department of Energy's Database. Main topics discussed included: acid rain mitigation - liming technologies and environmental considerations; biotechnology for wastewater treatment; environmental chemistry of lakes and reservoirs and pollution prevention and process analytical chemistry

  2. Chemistry-nuclear chemistry division. Progress report, October 1979-September 1980

    Energy Technology Data Exchange (ETDEWEB)

    Ryan, R.R. (comp.)

    1981-05-01

    This report presents the research and development programs pursued by the Chemistry-Nuclear Chemistry Division of the Los Alamos National Laboratory. Topics covered include advanced analytical methods, atmospheric chemistry and transport, biochemistry, biomedical research, element migration and fixation, inorganic chemistry, isotope separation and analysis, atomic and molecular collisions, molecular spectroscopy, muonic x rays, nuclear cosmochemistry, nuclear structure and reactions, radiochemical separations, theoretical chemistry, and unclassified weapons research.

  3. Chemistry-nuclear chemistry division. Progress report, October 1979-September 1980

    International Nuclear Information System (INIS)

    This report presents the research and development programs pursued by the Chemistry-Nuclear Chemistry Division of the Los Alamos National Laboratory. Topics covered include advanced analytical methods, atmospheric chemistry and transport, biochemistry, biomedical research, element migration and fixation, inorganic chemistry, isotope separation and analysis, atomic and molecular collisions, molecular spectroscopy, muonic x rays, nuclear cosmochemistry, nuclear structure and reactions, radiochemical separations, theoretical chemistry, and unclassified weapons research

  4. Isotope and Nuclear Chemistry Division annual report, FY 1984

    International Nuclear Information System (INIS)

    This report describes progress in the major research and development programs carried out in FY 1984 by the Isotope and Nuclear Chemistry Division. It covers radiochemical diagnostics of weapons tests; weapons radiochemical diagnostics research and development; other unclassified weapons research; stable and radioactive isotope production, separation, and applications (including biomedical applications); element and isotope transport and fixation; actinide and transition metal chemistry; structural chemistry, spectroscopy, and applications; nuclear structure and reactions; irradiation facilities; advanced analytical techniques: development and applications; atmospheric chemistry and transport; and earth and planetary processes. 287 refs

  5. Isotope and Nuclear Chemistry Division annual report, FY 1983

    Energy Technology Data Exchange (ETDEWEB)

    Heiken, J.H.; Lindberg, H.A. (eds.)

    1984-05-01

    This report describes progress in the major research and development programs carried out in FY 1983 by the Isotope and Nuclear Chemistry Division. It covers radiochemical diagnostics of weapons tests; weapons radiochemical diagnostics research and development; other unclassified weapons research; stable and radioactive isotope production, separation, and applications (including biomedical applications); element and isotope transport and fixation; actinide and transition metal chemistry; structural chemistry, spectroscopy, and applications; nuclear structure and reactions; irradiation facilities; advanced analytical techniques; development and applications; atmospheric chemistry and transport; and earth and planetary processes.

  6. Isotope and Nuclear Chemistry Division annual report, FY 1983

    International Nuclear Information System (INIS)

    This report describes progress in the major research and development programs carried out in FY 1983 by the Isotope and Nuclear Chemistry Division. It covers radiochemical diagnostics of weapons tests; weapons radiochemical diagnostics research and development; other unclassified weapons research; stable and radioactive isotope production, separation, and applications (including biomedical applications); element and isotope transport and fixation; actinide and transition metal chemistry; structural chemistry, spectroscopy, and applications; nuclear structure and reactions; irradiation facilities; advanced analytical techniques; development and applications; atmospheric chemistry and transport; and earth and planetary processes

  7. BARC highlights '88

    International Nuclear Information System (INIS)

    Highlights of research and development activities of the Bhabha Atomic Research Centre (BARC), Bombay during 1988 are presented in chapters entitled: Physical Sciences, Chemical Sciences, Materials and Materials Sciences, Radioisotopes, Reactors, Fuel Cycle, Radiological Safety and Protection, Electronics and Instrumentation, Engineering Services, and Life Sciences. Main thrust of the R and D activities of BARC is on nuclear power reactor technology and all stages of nuclear fuel cycle. Some activities are also in the frontier areas such as high temperature superconductivity and inertial confinement fusion. (M.G.B.). figs., tabs., coloured ills

  8. Fuel Chemistry Division: annual progress report for 1988

    International Nuclear Information System (INIS)

    The progress report gives the brief descriptions of various activites of the Fuel Chemistry Division of Bhabha Atomic Research Centre, Bombay for the year 1988. The descriptions of activities are arranged under the headings: Fuel Development Chemistry of Actinides, Quality Control of Fuel, and Studies related to Nuclear Material Accounting. At the end of report, a list of publications published in journals and papers presented at various conferences/symposia during 1988 is given. (author). 13 figs., 61 tabs

  9. Progress report, Chemistry and Materials Division

    International Nuclear Information System (INIS)

    A marked asymmetry has been observed in the intensity of ions scattered from manganese atoms in a Mn-Al alloy as a function of incidence angle, under near-axial channeling conditions. Proton dechanneling has been used to discriminate between simple and cluster defects created by He-ion irradiation of an Al-Ag alloy crystal. An automated Langmuir surface has been constructed for study of the radiation chemistry of polyunsaturated compounds organized in molecular films. New information about reactions of nitric oxide (NO) has been obtained which suggests that the reaction of NO with O2 in the gas phase is also an important reaction in the radiation chemistry of oxygenated nitrate and nitrite solutions. Development work on an ion-selective electrode for the determination of boron has been completed. Recent studies have resulted in improvements to the mass spectrometric determination of thorium, uranium and plutonium. Good agreement between the results of the determinations of atom percent fission by a stable isotope dilution Nd-148 and a uranium isotope ratio method was observed. Examination of a large number of iodine-induced crack initiation sites formed under conditions where the hydrides are in solution has shown no evidence for the involvement of any second phase particles, or any local segregation of impurities or alloying elements. Reproducible improvement in the purity of zirconium has been achieved by the electrotransport method. Doppler broadening studies of positron annihilation in electron irradiated Zr and Ti have been completed

  10. Analytical Chemistry Division : annual report for the year 1980

    International Nuclear Information System (INIS)

    The research and development activities of the Analytical Chemistry Division of the Bhabha Atomic Research Centre, during 1980 are reported in the form of abstracts. Various methods nuclear, spectral, thermal, electrochemical ion exchange developed for chemical analysis are described. Solvent extraction studies are also reviewed. (M.G.B.)

  11. Fuel Chemistry Division annual progress report for 1989

    International Nuclear Information System (INIS)

    The progress report gives a brief description of the various activities of the Fuel Chemistry Division of Bhabha Atomic Research Centre, Bombay for the year 1989. The descriptions of activities are arranged under the headings: Fuel Development Chemistry, Chemical Quality Control, Chemistry of Actinides, Sol-Gel process for the non Nuclear Ceramics and Studies related to Nuclear Material Accounting.At the end of the report, a list of papers published in journals and presented at various conferences/symposia is also given. (author). 69 tabs., 6 figs

  12. Isotope and Nuclear Chemistry Division annual report, FY 1990, October 1, 1989--September 30, 1990

    International Nuclear Information System (INIS)

    This report describes some of the major research and development programs of the Isotope and Nuclear Chemistry Division during FY 1990. The report includes articles on weapons chemistry, environmental chemistry, actinide and transition metal chemistry, geochemistry, nuclear structure and reactions, biochemistry and nuclear medicine, materials chemistry, and INC Division facilities and laboratories

  13. Chemistry-Nuclear Chemistry Division. Progress report, October 1980-September 1981

    International Nuclear Information System (INIS)

    This report describes major progress in the research and development programs pursued by the Chemistry-Nuclear Chemistry Division of the Los Alamos National Laboratory during FY 1981. Topics covered include advanced analytical methods, atmospheric chemistry and transport, biochemistry, biomedical research, medical radioisotopes research, element migration and fixation, nuclear waste isolation research, inorganic and structural chemistry, isotope separation, analysis and applications, the newly established Nuclear Magnetic Resonance Center, atomic and molecular collisions, molecular spectroscopy, nuclear cosmochemistry, nuclear structure and reactions, pion charge exchange, radiochemical separations, theoretical chemistry, and unclassified weapons research

  14. Chemistry-Nuclear Chemistry Division. Progress report, October 1980-September 1981

    Energy Technology Data Exchange (ETDEWEB)

    Ryan, R.R. (comp.)

    1982-05-01

    This report describes major progress in the research and development programs pursued by the Chemistry-Nuclear Chemistry Division of the Los Alamos National Laboratory during FY 1981. Topics covered include advanced analytical methods, atmospheric chemistry and transport, biochemistry, biomedical research, medical radioisotopes research, element migration and fixation, nuclear waste isolation research, inorganic and structural chemistry, isotope separation, analysis and applications, the newly established Nuclear Magnetic Resonance Center, atomic and molecular collisions, molecular spectroscopy, nuclear cosmochemistry, nuclear structure and reactions, pion charge exchange, radiochemical separations, theoretical chemistry, and unclassified weapons research.

  15. Analytical Chemistry Division, annual report for the year 1973

    International Nuclear Information System (INIS)

    Research and development activities of the Analytical Chemistry Division of the Bhabha Atomic Research Centre, Bombay (India), for the year 1973 are reported. From the point of view of nuclear science and technology, the following are worth mentioning: (1) radiochemical analysis of mercury in marine products (2) rapid anion exchange separation and spectrophotometric determination of gadolinium in uranium dioxide-gadolinium oxide blend and (3) neutron activation analysis for forensic purpose. (M.G.B.)

  16. BARC highlights 86

    International Nuclear Information System (INIS)

    The Bhabha Atomic Research Centre (BARC), Bombay, is the premier multidisciplinary research establishment of the Department of Atomic Energy (India). It provides Research and Development (R and D) support to the nuclear programmes of the country. Some of its important R and D activities and achievements during 1986 are described in brief in the chapters entitled: Physical Sciences, Chemical Sciences, Materials and Materials Sciences, Life Sciences, Reactors, Fuel Cycle, and Electronics and Instrumentation. The entire text is illustrated with a number of diagrams and photographs. (M.G.B.)

  17. Activity of Water Chemistry Division of the Atomic Energy Society of Japan

    International Nuclear Information System (INIS)

    A water chemistry group in Japan started in 1982 as a special committee of the Atomic Energy Society of Japan (AESJ). In 2007 the committee has been upgraded as Water Chemistry Division. Current status of the Water Chemistry Division is briefly summarized. (author)

  18. Electron accelerators programme at BARC

    International Nuclear Information System (INIS)

    Electron beams have established themselves as potential tools in the field of basic sciences. They have been employed as probes for unfolding the secrets of nature in the field of physics, chemistry, biology, metallurgy, agriculture etc. The applied sciences also have been immensely influenced by their vast potential. Even the industry could not remain isolated from their impact. It is evident from the processing of the materials which has gone through a dramatic change. To quote a few example's, the curing of coatings and adhesives, coloring of diamonds, irradiation of food, cross linking of cables, sterilization of medical products, treatment of pathogenic germs etc. have gone through a radical transformation. Similarly, the electron generated photon beams are finding vast applications in the field of radiography, radiation therapy and the strategic areas like defense. Free electron lasers have found a good berth in medicines and material sciences. BARC had long back realized the enormous potential of these beams and chalked out an elaborate programme for developing these accelerators. A brief account of the programme is given

  19. BARC progress report - 1996

    International Nuclear Information System (INIS)

    This report summarises the various activities and research and development programmes of the different Divisions of the Bhabha Atomic Research Centre, Mumbai. The list of publications and paper presented at various conferences, symposia, workshops etc and papers published in various journals by the staff members of the different Divisions are also given. (author)

  20. BARC progress report - 1998

    International Nuclear Information System (INIS)

    This report is a compilation of the progress in various major activities and Research and Development programmes of the different Divisions of the Bhabha Atomic Research Centre, Mumbai. The list of publications and papers presented at the various conferences, symposia, workshops and papers published in journal by the staff members of the Divisions are also given. (author)

  1. BARC progress report - 1997

    International Nuclear Information System (INIS)

    This report is a compilation of the progress in various major activities and Research and Development programmes of the different Divisions of the Bhabha Atomic Research Centre, Mumbai. The list of publications and papers presented at the various conferences, symposia, workshops and papers published in journal by the staff members of the Divisions are also given. (author)

  2. BARC solution for burn injuries

    CERN Multimedia

    2003-01-01

    The Bhabha Atomic Research Centre (BARC), has developed Hydrogel which is expected to be mass marketed soon in India. Dr Anil Kakodkar, Chairman of Atomic Energy Commission, said the product not only heals the wound, but also eliminates scars (1/2 page).

  3. Applied Chemistry Division progress report for the period 1990-1992

    International Nuclear Information System (INIS)

    The report covers the research and development (R and D) activities of the Applied Chemistry Division for the period January 1990 to December, 1992. R and D programmes of the Division are formulated to study the chemical aspects related to nuclear power plants and heavy water plants. The Division also gives consultancy to DAE units and outside agencies on water chemistry problems. The thrust areas of the Division's R and D programmes are : decontamination of nuclear facilities, metal water interaction of the materials used in PHT system, chemistry of soluble poisons, biofouling and its control in cooling water circuits, and treatment of cooling waters. Other major R and D activities are in the areas of: solid state reactions and high temperature thermodynamics, primary coolant water chemistry, speciation studies in metal amine systems, high temperature aqueous radiation chemistry. The Division was engaged in studies in novel areas such as dental implants, remote sealing of pipes in MS pipes, and cold fusion. The Division also designed and fabricated instruments like the Knudsen cell mass spectrometer, calorimeters and developed required software. All these R and D activities are reported in the form of individual summaries. A list of publications from the Division and a list of the staff members of the Division are given at the end of the report. (author). tabs., figs., appendices

  4. Isotope and nuclear chemistry division. Annual report, FY 1987. Progress report, October 1986-September 1987

    International Nuclear Information System (INIS)

    This report describes progress in the major research and development programs carried out in FY 1987 by the Isotope and Nuclear Chemistry Division. The report includes articles on radiochemical weapons diagnostics and research and development; other unclassified weapons research; stable and radioactive isotope production and separation; chemical biology and nuclear medicine; element and isotope transport and fixation; actinide and transition metal chemistry; structural chemistry, spectroscopy, and applications; nuclear structure and reactions; irradiation facilities; advanced concepts and technology; and atmospheric chemistry

  5. Photochemically driven redox chemistry induces protocell membrane pearling and division

    OpenAIRE

    Zhu, Ting F.; Adamala, Katarzyna; Zhang, Na; SZOSTAK, JACK W.

    2012-01-01

    Prior to the evolution of complex biochemical machinery, the growth and division of simple primitive cells (protocells) must have been driven by environmental factors. We have previously demonstrated two pathways for fatty acid vesicle growth in which initially spherical vesicles grow into long filamentous vesicles; division is then mediated by fluid shear forces. Here we describe a different pathway for division that is independent of external mechanical forces. We show that the illumination...

  6. Analytical Chemistry Division annual progress report for period ending December 31, 1985

    International Nuclear Information System (INIS)

    Progress reports are presented for the four major sections of the division: analytical spectroscopy, radioactive materials laboratories, inorganic chemistry, and organic chemistry. A brief discussion of the division's role in the Laboratory's Environmental Restoration and Facilities Upgrade is given. Information about quality assurance and safety programs is presented, along with a tabulation of analyses rendered. Publications, oral presentations, professional activities, educational programs, and seminars are cited

  7. Analytical Chemistry Division annual progress report for period ending December 31, 1985

    Energy Technology Data Exchange (ETDEWEB)

    Shultz, W.D.

    1986-05-01

    Progress reports are presented for the four major sections of the division: analytical spectroscopy, radioactive materials laboratories, inorganic chemistry, and organic chemistry. A brief discussion of the division's role in the Laboratory's Environmental Restoration and Facilities Upgrade is given. Information about quality assurance and safety programs is presented, along with a tabulation of analyses rendered. Publications, oral presentations, professional activities, educational programs, and seminars are cited.

  8. One hundred years of the Division of Agricultural and Food Chemistry

    Science.gov (United States)

    The Division of Agricultural and Food Chemistry (AGFD)of the American Chemical Society was 100 years old in 2008. ACS grouped papers into sections at its national meetings starting in 1904, including one dealing with agricultural, biological, and sanitary chemistry. This section became AGFD on Dec...

  9. Engineering ceramics development in BARC

    International Nuclear Information System (INIS)

    The non-nuclear ceramics research and development activities in BARC encompass the oxides carbide and nitride of light elements. The major thrust areas have been towards development of engineering ceramics like alumina, zirconia, silicon carbide and silicon nitride. The present paper summarises the research activities regarding these ceramics especially on powder synthesis and shape fabrication by injection moulding, reaction-sintering and activated sintering. The stability of silicon carbide in oxygen containing atmosphere is highlighted. (orig.)

  10. Surveys of research in the Chemistry Division, Argonne National Laboratory

    Energy Technology Data Exchange (ETDEWEB)

    Grazis, B.M. [ed.

    1992-11-01

    Research reports are presented on reactive intermediates in condensed phase (radiation chemistry, photochemistry), electron transfer and energy conversion, photosynthesis and solar energy conversion, metal cluster chemistry, chemical dynamics in gas phase, photoionization-photoelectrons, characterization and reactivity of coal and coal macerals, premium coal sample program, chemical separations, heavy elements coordination chemistry, heavy elements photophysics/photochemistry, f-electron interactions, radiation chemistry of high-level wastes (gas generation in waste tanks), ultrafast molecular electronic devices, and nuclear medicine. Separate abstracts have been prepared. Accelerator activites and computer system/network services are also reported.

  11. Surveys of research in the Chemistry Division, Argonne National Laboratory

    Energy Technology Data Exchange (ETDEWEB)

    Grazis, B.M. (ed.)

    1992-01-01

    Research reports are presented on reactive intermediates in condensed phase (radiation chemistry, photochemistry), electron transfer and energy conversion, photosynthesis and solar energy conversion, metal cluster chemistry, chemical dynamics in gas phase, photoionization-photoelectrons, characterization and reactivity of coal and coal macerals, premium coal sample program, chemical separations, heavy elements coordination chemistry, heavy elements photophysics/photochemistry, f-electron interactions, radiation chemistry of high-level wastes (gas generation in waste tanks), ultrafast molecular electronic devices, and nuclear medicine. Separate abstracts have been prepared. Accelerator activites and computer system/network services are also reported.

  12. Chemistry Division annual progress report for period ending April 30, 1993

    Energy Technology Data Exchange (ETDEWEB)

    Poutsma, M.L.; Ferris, L.M.; Mesmer, R.E.

    1993-08-01

    The Chemistry Division conducts basic and applied chemical research on projects important to DOE`s missions in sciences, energy technologies, advanced materials, and waste management/environmental restoration; it also conducts complementary research for other sponsors. The research are arranged according to: coal chemistry, aqueous chemistry at high temperatures and pressures, geochemistry, chemistry of advanced inorganic materials, structure and dynamics of advanced polymeric materials, chemistry of transuranium elements and compounds, chemical and structural principles in solvent extraction, surface science related to heterogeneous catalysis, photolytic transformations of hazardous organics, DNA sequencing and mapping, and special topics.

  13. Isotope and Nuclear Chemistry Division annual report FY 1985, October 1984-September 1985

    International Nuclear Information System (INIS)

    This report describes progress in the major research and development programs carried out in FY 1985 by the Isotope and Nuclear Chemistry Division. It covers radiochemical diagnostics of weapons tests; weapons radiochemical diagnostics research and development; other unclassified weapons research; stable and radioactive isotope production, separation, and applications (including biomedical applications); element and isotope transport and fixation; actinide and transition metal chemistry; structural chemistry, spectroscopy, and applications; nuclear structure and reactions; irradiations facilities; advanced analytical techniques; development and applications; atmospheric chemistry and transport; and earth and planetary processes

  14. Isotope and Nuclear Chemistry Division annual report FY 1986, October 1985-September 1986

    International Nuclear Information System (INIS)

    This report describes progress in the major research and development programs carried out in FY 1986 by the Isotope and Nuclear Chemistry Division. The report includes articles on radiochemical diagnostics and weapons tests; weapons radiochemical diagnostics research and development; other unclassified weapons research; stable and radioactive isotope production and separation; chemical biology and nuclear medicine; element and isotope transport and fixation; actinide and transition metal chemistry; structural chemistry, spectroscopy, and applications; nuclear structure and reactions; irradiation facilities; advanced concepts and technology; and atmospheric chemistry

  15. Isotope and Nuclear Chemistry Division annual report FY 1986, October 1985-September 1986

    Energy Technology Data Exchange (ETDEWEB)

    Heiken, J.H. (ed.)

    1987-06-01

    This report describes progress in the major research and development programs carried out in FY 1986 by the Isotope and Nuclear Chemistry Division. The report includes articles on radiochemical diagnostics and weapons tests; weapons radiochemical diagnostics research and development; other unclassified weapons research; stable and radioactive isotope production and separation; chemical biology and nuclear medicine; element and isotope transport and fixation; actinide and transition metal chemistry; structural chemistry, spectroscopy, and applications; nuclear structure and reactions; irradiation facilities; advanced concepts and technology; and atmospheric chemistry.

  16. American Chemical Society, 75 years of progress, Division of Environmental Chemistry, preprints of papers

    International Nuclear Information System (INIS)

    The 196th ACS meeting was held in the Los Angeles September 25-30, 1988. The Division of Environmental Chemistry presented symposia on the following topics: data analysis procedures for trace constituents and toxic compounds, photochemical oxidants and their precursors, ionizing radiation in drinking water, environmental chemistry of dyes, biogeochemistry of CO2 and the greenhouse effect, and biological markers of environmental contaminants. Abstracts are included for 151 papers

  17. Chemistry Division progress report for the period January 1, 1977 - December 31, 1980

    International Nuclear Information System (INIS)

    The research and development work of the Chemistry Division of the Bhabha Atomic Research Centre, Bombay, during the period 1977-1980 is reported in the form of individual summaries under the headings: basic research including radiation chemistry, photochemistry, kinetic and electrochemical studies, ion exchange and sorption behaviour, chemistry of metal complexes (in particular, of uranium complexes), radiation damage in solids, heterogeneous catalysts, studies in magnetism, physical properties, solid state studies, theoretical studies, reactor related programmes (including reactor chemistry, lubricants and sealants, surface studies, water chemistry), applied research and development (including materials development, purification and analytical techniques, apolied radiation chemistry etc.), and instrumentation. Work of service facilities such as workshop, analytical se services, and repair and maintenance of instruments is described. Lists of training programmes, staff publications and divisional seminars, are given. At the end a sectionwise list of staff members is also given. (M.G.B.)

  18. Control and monitoring of EXAFS beamline of Indus-2 at RRCAT remotely from BARC

    International Nuclear Information System (INIS)

    EXAFS Beam line of Indus-2 is being operated and managed by Spectroscopy Division, BARC. Experimental setup in Indus-2 experimental hall is required to be monitored and operated when beam is available at Indus-2. To facilitate remote monitoring and control of the experimental setup from BARC, necessary networking infrastructure has been commissioned. The setup is based on client-server architecture and is using LabView software as the application development tool. Vacuum is controlled and monitored remotely from BARC and data acquisition done at RRCAT for various parameters is transmitted to the other end. This is a unique application practically deployed on ANUNET. For providing dedicated, secured, reliable, high speed connectivity various options were explored. It was decided to use ANUNET network for this purpose. ANUNET is a DAE wide network connecting various units of DAE either by satellite based links or by leased links. Dedicated leased connectivity has been established between Spectroscopy Division, BARC and EXAFS Beam line, Indus-2. The connectivity does not intermix with the campus LANs of RRCAT and BARC, thus providing physical isolation, but at the same time addresses the user's requirement. IT security guidelines of the two units are also not compromised. (author)

  19. Analytical capabilities and services of Lawrence Livermore Laboratory's General Chemistry Division

    International Nuclear Information System (INIS)

    This comprehensive guide to the analytical capabilities of Lawrence Livermore Laboratory's General Chemistry Division describes each analytical method in terms of its principle, field of application, and qualitative and quantitative uses. Also described are the state and quantity of sample required for analysis, processing time, available instrumentation, and responsible personnel

  20. Progress report chemistry and materials division 1984 January 1 - June 30

    International Nuclear Information System (INIS)

    During the first half of 1984 work in the Chemistry and Materials Division of Chalk River Nuclear Laboratories concentrated on studies of ion penetration phenomena, surface phenomena, radiation damage, radiochemical analysis, recycle fuel analysis, gamma spectrometry, mass spectrometry of fuels and moderators, analysis of hydrogen in zirconium alloys, burnup analysis, radiolysis, hydrogen isotope separation, hydrogen adsorption, zirconium corrosion, and metal physics studies of zirconium

  1. Progress report: Chemistry and Materials Division, 1982 April 1 - June 30

    International Nuclear Information System (INIS)

    The work of the division in the areas of solid state studies, radiation chemistry, isotope separation, analytical chemistry and materials science is described. The solid state science group studied solute atom vacancy trapping in irradiated f.c.c. alloys as well as the rearrangement of atoms in solids bombarded by energetic heavy ions. In radiation chemistry, work was done on the pulse radiolysis of NO in argon. Isotope separation studies were done on fluoroform and uranium. Fuel burnup determination using 148Nd and 139La was investigated. Zirconium alloy studies included work on stress corrosion cracking and the Baushinger effect

  2. Analytical Chemistry Division annual progress report for period ending December 31, 1988

    Energy Technology Data Exchange (ETDEWEB)

    1988-05-01

    The Analytical Chemistry Division of Oak Ridge National Laboratory (ORNL) is a large and diversified organization. As such, it serves a multitude of functions for a clientele that exists both in and outside of ORNL. These functions fall into the following general categories: (1) Analytical Research, Development, and Implementation. The division maintains a program to conceptualize, investigate, develop, assess, improve, and implement advanced technology for chemical and physicochemical measurements. Emphasis is on problems and needs identified with ORNL and Department of Energy (DOE) programs; however, attention is also given to advancing the analytical sciences themselves. (2) Programmatic Research, Development, and Utilization. The division carries out a wide variety of chemical work that typically involves analytical research and/or development plus the utilization of analytical capabilities to expedite programmatic interests. (3) Technical Support. The division performs chemical and physicochemical analyses of virtually all types. The Analytical Chemistry Division is organized into four major sections, each of which may carry out any of the three types of work mentioned above. Chapters 1 through 4 of this report highlight progress within the four sections during the period January 1 to December 31, 1988. A brief discussion of the division's role in an especially important environmental program is given in Chapter 5. Information about quality assurance, safety, and training programs is presented in Chapter 6, along with a tabulation of analyses rendered. Publications, oral presentations, professional activities, educational programs, and seminars are cited in Chapters 7 and 8.

  3. Analytical Chemistry Division annual progress report for period ending December 31, 1988

    International Nuclear Information System (INIS)

    The Analytical Chemistry Division of Oak Ridge National Laboratory (ORNL) is a large and diversified organization. As such, it serves a multitude of functions for a clientele that exists both in and outside of ORNL. These functions fall into the following general categories: (1) Analytical Research, Development, and Implementation. The division maintains a program to conceptualize, investigate, develop, assess, improve, and implement advanced technology for chemical and physicochemical measurements. Emphasis is on problems and needs identified with ORNL and Department of Energy (DOE) programs; however, attention is also given to advancing the analytical sciences themselves. (2) Programmatic Research, Development, and Utilization. The division carries out a wide variety of chemical work that typically involves analytical research and/or development plus the utilization of analytical capabilities to expedite programmatic interests. (3) Technical Support. The division performs chemical and physicochemical analyses of virtually all types. The Analytical Chemistry Division is organized into four major sections, each of which may carry out any of the three types of work mentioned above. Chapters 1 through 4 of this report highlight progress within the four sections during the period January 1 to December 31, 1988. A brief discussion of the division's role in an especially important environmental program is given in Chapter 5. Information about quality assurance, safety, and training programs is presented in Chapter 6, along with a tabulation of analyses rendered. Publications, oral presentations, professional activities, educational programs, and seminars are cited in Chapters 7 and 8

  4. Applied Chemistry Division progress report for the period 1993-1995

    International Nuclear Information System (INIS)

    The report covers the research and development (R and D) activities of the Applied Chemistry Division for the period January 1993 to December 1995. This period is marked by important contributions pertaining to the R and D programmes on chemistry aspects related to nuclear power stations. The thrust areas of the Division's R and D programmes are : chemical decontamination of nuclear reactor systems, metal-water interactions relevant to the Nuclear Power Stations and other industrial units of the Department, biofouling and its control in cooling water circuits and cooling water treatment. Other major research programmes are in the areas of radiation chemistry, solid state reactions and thermodynamic studies aimed at reactor applications. refs., 9 tabs., 1 fig

  5. Mass and emission spectrometry in the Analytical Chemistry Division of Oak Ridge National Laboratory

    International Nuclear Information System (INIS)

    The capabilities of the Mass and Emission Spectrometry Section of the Analytical Chemistry Division of Oak Ridge National Laboratory are described. Many different areas of mass spectrometric expertise are represented in the section: gas analysis, high abundance sensitivity measurements, high- and low-resolution organic analyses, spark source trace constituent analysis, and ion microprobe analysis of surfaces. These capabilities are complemented by emission spectrometry. The instruments are described along with a few applications, some of which are unique

  6. Analytical Chemistry Division annual progress report for period ending December 31, 1989

    International Nuclear Information System (INIS)

    The Analytical Chemistry Division of Oak Ridge National Laboratory (ORNL) is a large and diversified organization. As such, it serves a multitude of functions for a clientele that exists both in and outside of ORNL. These functions fall into the following general categories: Analytical Research, Development and Implementation; Programmatic Research, Development, and Utilization; and Technical Support. The Analytical Chemistry Division is organized into four major sections, each which may carry out any of the three types of work mentioned above. Chapters 1 through 4 of this report highlight progress within the four sections during the period January 1 to December 31, 1989. A brief discussion of the division's role in an especially important environmental program is given in Chapter 5. Information about quality assurance, safety, and training programs is presented in Chapter 6, along with a tabulation of analyses rendered. Publications, oral presentations, professional activities, educational programs, and seminars are cited in Chapters 7 and 8. Approximately 69 articles, 41 proceedings, and 31 reports were published, and 151 oral presentations were given during this reporting period. Some 308,981 determinations were performed

  7. Analytical Chemistry Division annual progress report for period ending December 31, 1989

    Energy Technology Data Exchange (ETDEWEB)

    1990-04-01

    The Analytical Chemistry Division of Oak Ridge National Laboratory (ORNL) is a large and diversified organization. As such, it serves a multitude of functions for a clientele that exists both in and outside of ORNL. These functions fall into the following general categories: Analytical Research, Development and Implementation; Programmatic Research, Development, and Utilization; and Technical Support. The Analytical Chemistry Division is organized into four major sections, each which may carry out any of the three types of work mentioned above. Chapters 1 through 4 of this report highlight progress within the four sections during the period January 1 to December 31, 1989. A brief discussion of the division's role in an especially important environmental program is given in Chapter 5. Information about quality assurance, safety, and training programs is presented in Chapter 6, along with a tabulation of analyses rendered. Publications, oral presentations, professional activities, educational programs, and seminars are cited in Chapters 7 and 8. Approximately 69 articles, 41 proceedings, and 31 reports were published, and 151 oral presentations were given during this reporting period. Some 308,981 determinations were performed.

  8. Analytical Chemistry Division. Annual progress report for period ending December 31, 1981

    Energy Technology Data Exchange (ETDEWEB)

    Lyon, W. S. [ed.

    1982-04-01

    The functions of the Analytical Chemistry Division fall into three general categories: (1) analytical research, development, and implementation; (2) programmatic research, development and utilization; (3) technical support. The Division is organized into five major sections each of which may carry out any type of work falling into the thre categories mentioned above. Chapters 1 through 5 of this report highlight progress within the five sections which are: analytical methodology; mass and emission spectrometry; analytical technical support; bio/organic analysis section; and nuclear and radiochemical analysis. A short summary introduces each chapter to indicate work scope. Information about quality assurance and safety programs is presented in Chapter 6, along with a tabulation of analyses rendered. Chapter 7 covers supplementary activities. Chapter 8 is on presentation of research results (publications, articles reviewed or referred for periodicals). Approximately 56 articles, 31 proceedings publications and 33 reports have been published, and 119 oral presentations given during this reporting period.

  9. Analytical Chemistry Division. Annual progress report for period ending December 31, 1981

    International Nuclear Information System (INIS)

    The functions of the Analytical Chemistry Division fall into three general categories: (1) analytical research, development, and implementation; (2) programmatic research, development and utilization; (3) technical support. The Division is organized into five major sections each of which may carry out any type of work falling into the thre categories mentioned above. Chapters 1 through 5 of this report highlight progress within the five sections which are: analytical methodology; mass and emission spectrometry; analytical technical support; bio/organic analysis section; and nuclear and radiochemical analysis. A short summary introduces each chapter to indicate work scope. Information about quality assurance and safety programs is presented in Chapter 6, along with a tabulation of analyses rendered. Chapter 7 covers supplementary activities. Chapter 8 is on presentation of research results (publications, articles reviewed or referred for periodicals). Approximately 56 articles, 31 proceedings publications and 33 reports have been published, and 119 oral presentations given during this reporting period

  10. Analytical Chemistry Division annual progress report for period ending December 31, 1992

    Energy Technology Data Exchange (ETDEWEB)

    Shults, W.D.

    1993-04-01

    This report is divided into: Analytical spectroscopy (optical spectroscopy, organic mass spectrometry, inorganic mass spectrometry, secondary ion mass spectrometry), inorganic and radiochemistry (transuranium and activation analysis, low-level radiochemical analysis, inorganic analysis, radioactive materials analysis, special projects), organic chemistry (organic spectroscopy, separations and synthesis, special projects, organic analysis, ORNL/UT research program), operations (quality assurance/quality control, environmental protection, safety, analytical improvement, training, radiation control), education programs, supplementary activities, and presentation of research results. Tables are included for articles reviewed or refereed for periodicals, analytical service work, division manpower and financial summary, and organization chart; a glossary is also included.

  11. Chemistry Division annual progress report for period ending January 31, 1984

    Energy Technology Data Exchange (ETDEWEB)

    1984-05-01

    Progress is reported in the following fields: coal chemistry, aqueous chemistry at high temperatures and pressures, geochemistry, high-temperature chemistry and thermodynamics of structural materials, chemistry of transuranium elements and compounds, separations chemistry, elecrochemistry, catalysis, chemical physics, theoretical chemistry, nuclear waste chemistry, chemistry of hazardous chemicals, and thermal energy storage.

  12. Progress report, Chemistry and Materials Division 1 July - 30 September, 1981

    International Nuclear Information System (INIS)

    The work of the division in the areas of solid state physics, chemistry and materials science over the quarter is described. The solid state science branch has worked on crystal defect formation after ion beam irradiation. Laser isotope separation methods have produced visible amounts of water enriched 2000-fold in deuterium. Work has been done on hydrogen isotope exchange in H2-methanol mixtures. Nitrogen impurities in Xe-133 can be determined down to the microgram level. A new apparatus for the determination of hydrogen in zirconium has been assembled. Coatings of stainless steels on zircaloy fuel cladding continue to offer protection against oxidation. Agreement has been obtained between computer-simulated and observed electron microscope images of irradiated titanium. Cold-worked zirconium has been studied under helium ion bombardment

  13. Synthesis of 10-Ethyl Flavin: A Multistep Synthesis Organic Chemistry Laboratory Experiment for Upper-Division Undergraduate Students

    Science.gov (United States)

    Sichula, Vincent A.

    2015-01-01

    A multistep synthesis of 10-ethyl flavin was developed as an organic chemistry laboratory experiment for upper-division undergraduate students. Students synthesize 10-ethyl flavin as a bright yellow solid via a five-step sequence. The experiment introduces students to various hands-on experimental organic synthetic techniques, such as column…

  14. Modeling Human Serum Albumin Tertiary Structure to Teach Upper-Division Chemistry Students Bioinformatics and Homology Modeling Basics

    Science.gov (United States)

    Petrovic, Dus?an; Zlatovic´, Mario

    2015-01-01

    A homology modeling laboratory experiment has been developed for an introductory molecular modeling course for upper-division undergraduate chemistry students. With this experiment, students gain practical experience in homology model preparation and assessment as well as in protein visualization using the educational version of PyMOL…

  15. European analytical column No. 36 from the Division of Analytical Chemistry (DAC) of the European Association for Chemical and Molecular Sciences (EuCheMS)

    DEFF Research Database (Denmark)

    Karlberg, Bo; Emons, Hendrik; Andersen, Jens Enevold Thaulov

    2008-01-01

    European analytical column no. 36 from the division of analytical chemistry (DAC) of the European association for chemical and molecular sciences (EuCheMS)......European analytical column no. 36 from the division of analytical chemistry (DAC) of the European association for chemical and molecular sciences (EuCheMS)...

  16. Chemistry Division annual progress report for period ending July 31, 1981

    Energy Technology Data Exchange (ETDEWEB)

    1982-01-01

    Research is reported on: chemistry of coal liquefaction, aqueous chemistry at high temperatures, geosciences, high-temperature chemistry and thermodynamics of structural materials, chemistry of TRU elements and compounds, separations chemistry, electrochemistry, nuclear waste chemistry, chemical physics, theoretical chemistry, inorganic chemistry of hydrogen cycles, molten salt systems, and enhanced oil recovery. Separate abstracts were prepared for the sections dealing with coal liquefaction, TRU elements and compounds, separations, nuclear wastes, and enhanced oil recovery. (DLC)

  17. Chemistry Division annual progress report for period ending July 31, 1981

    International Nuclear Information System (INIS)

    Research is reported on: chemistry of coal liquefaction, aqueous chemistry at high temperatures, geosciences, high-temperature chemistry and thermodynamics of structural materials, chemistry of TRU elements and compounds, separations chemistry, electrochemistry, nuclear waste chemistry, chemical physics, theoretical chemistry, inorganic chemistry of hydrogen cycles, molten salt systems, and enhanced oil recovery. Separate abstracts were prepared for the sections dealing with coal liquefaction, TRU elements and compounds, separations, nuclear wastes, and enhanced oil recovery

  18. Chemistry Division annual progress report for period ending January 31, 1986

    International Nuclear Information System (INIS)

    This report has been indexed by 11 separate chapters. The subjects covered are: coal chemistry, aqueous chemistry at high temperatures and pressures, geochemistry, materials chemistry, chemistry of transuranium elements and compounds, separations chemistry, catalysis, electron spectroscopy, nuclear waste chemistry, heuristic modeling, and special topics

  19. Chemistry Division annual progress report for period ending January 31, 1986

    Energy Technology Data Exchange (ETDEWEB)

    1986-05-01

    This report has been indexed by 11 separate chapters. The subjects covered are: coal chemistry, aqueous chemistry at high temperatures and pressures, geochemistry, materials chemistry, chemistry of transuranium elements and compounds, separations chemistry, catalysis, electron spectroscopy, nuclear waste chemistry, heuristic modeling, and special topics. (PLG)

  20. Radiochemistry Division annual progress report: 1993

    International Nuclear Information System (INIS)

    The research and development activities of the Radiochemistry Division of BARC during the year 1993 are briefly described under the headings: (i) nuclear chemistry; (ii) actinide chemistry; (iii) spectroscopy and (iv) instrumentation. Nuclear chemistry work deals with areas of nuclear reactions, nuclear fission, nuclear spectroscopy, nuclear data measurements and synthesis of transplutonium isotopes. The research programme in actinide chemistry deals mainly with the complexation of actinides, lanthanides and fission products from aqueous media with organic reagents such as amides, diamides, CMPO, crown ethers and macrocyclic ligands. Spectroscopic studies include electron paramagnetic resonance and optical investigations to probe phase transitions in actinide and other compounds, investigation of role of radiation induced radical ions in the thermoluminescence of actinide doped phosphors, photoacoustic spectra of uranium compounds and development of analytical methods for the determination of silver and rare earths from uranium and thorium oxide matrices. The instrumentation group has developed electronic circuitry and software support for installing a pilot plant for the preparation of dry gel microspheres of UO2 and (U, Pu)O2. A list of publications by the scientific staff of the Division is also included. (author). refs., 38 figs., 26 tabs

  1. Analytical Chemistry Division annual progress report for period ending December 31, 1991

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1992-01-01

    The following sentences highlight some of the technical activities carried out during 1991. They illustrate the diversity of programs and technical work performed within the Analytical Chemistry Division. Our neutron activation analysis laboratory at HFIR was placed into operation during 1991. We have combined inductively coupled plasma mass spectrometry (ICP/MS) with a preparation procedure developed at the Argonne National Laboratory to measure ultra-trace levels of U, Pu, Np, and Am in body fluids, primarily urine. Much progress has been made over the last year in the interfacing of an rf-powered glow discharge source to a double-focusing mass spectrometer. Preliminary experiments using electrospray ionization combined with ion trap mass spectrometry show much promise for the analysis of metals in solution. A secondary ion microprobe has been constructed that permits determination of the distribution of organic compounds less than a monolayer thick on samples as large as 1 cm diameter. Fourier transform mass spectrometry has been demonstrated to be a highly effective tool for the detailed characterization of biopolymers, especially normal and modified oligonucleotides. Much has been accomplished in understanding the fundamentals of quadrupole ion trap mass spectrometry. Work with ITMS instrumentation has led to the development of rapid methods for the detection of trace organics in environmental and physiological samples. A new type of time-of-flight mass spectrometer was designed for use with our positron ionization experiments. Fundamental research on chromatography at high concentrations and on gas-solid adsorption has continued. The preparation of a monograph on the chemistry of environmental tobacco smoke was completed this year.

  2. Progress report, Chemistry and Materials Division, October 1 to December 31, 1975

    International Nuclear Information System (INIS)

    Interim research results are reported in solid state science (ion penetration, electron microscopy, radiation damage and metal physics, nuclear methods of analysis), general chemistry (analytical chemistry, hydrogen-water exchange, radioactivity measurements, electrochemistry), physical chemistry (radiation and isotope chemistry), materials science (surface chemistry and metal physics), and university research (deuterium exchange and zirconium alloy properties). (E.C.B.)

  3. Analytical Chemistry Division annual progress report for period ending December 31, 1982

    International Nuclear Information System (INIS)

    The Analytical Chemistry Dvision of Oak Ridge National laboratory (ORNL) serves a multitude of functions for a clientele that exists both in and outside ORNL. These functions fall into the following general categories: (1) analytical research, development, and implementation; (2) programmatic research, development, and utilization; and (3) technical support. The Division is organized into five major sections, each of which may carry out any type of work falling in the three categories mentioned above. Chapters 1 through 5 of this report highlight progress within the five sections (analytical methodology, mass and emission spectrometry, radioactive materials, bio/organic analysis, and general and environmental analysis) during the period January 1, 1982 to December 31, 1982. A short summary introduces each chapter to indicate work scope. Information about quality assurance and safety programs is presented in Chapter 6, along with a tabulation of analyses rendered. Publications, oral presentations, professional activities, educational programs, and seminars are cited in Chapters 7 and 8. Approximately 61 articles, 32 proceedings publications and 37 reports have been published, and 107 oral presentations were given during this reporting period

  4. Progress report, Chemistry and Materials Division, 1 April - 30 June, 1981

    International Nuclear Information System (INIS)

    The work of the Division in the areas of solid state science, radiation, physical and analytical chemistry, and materials science during the quarter is described. Measurements of ion stopping power have emphasized the importance of axial symmetry and may be used to show the contribution of nuclear inelastic events to stopping processes. Enhancement of ion scattering at 180 degrees can occur even in the first few layers of a single crystal of gold implanted with heavy atoms. Agreement has been obtained between experimental and calculated rates for dechanneling of protons in gold. The rate of decomposition of HOI in aqueous solutions has been determined. The effects of radiation on dithiothreitol is being studied. Laser photochemistry work includes investigations of multiphoton dissociation and of laser-induced zirconium isotope separation. A method has been found for the preparation of oxygen gas samples for the determination of oxygen isotope ratios in water, and high-performance liquid chromatography has been applied to metals in ground water. Sputtered coatings of stainless steel on the surface of zircaloy fuel cladding reduce the oxidation rate in steam. A theoretically-based design equation for irradiation growth of pressure tubes has been developed. Studies on the effect of small strains on zircaloy-2 tubing show the need to avoid even small amounts of compressive deformation of calandria tubes

  5. Analytical Chemistry Division annual progress report for period ending December 31, 1982

    Energy Technology Data Exchange (ETDEWEB)

    Lyon, W.S. (ed.)

    1983-05-01

    The Analytical Chemistry Dvision of Oak Ridge National laboratory (ORNL) serves a multitude of functions for a clientele that exists both in and outside ORNL. These functions fall into the following general categories: (1) analytical research, development, and implementation; (2) programmatic research, development, and utilization; and (3) technical support. The Division is organized into five major sections, each of which may carry out any type of work falling in the three categories mentioned above. Chapters 1 through 5 of this report highlight progress within the five sections (analytical methodology, mass and emission spectrometry, radioactive materials, bio/organic analysis, and general and environmental analysis) during the period January 1, 1982 to December 31, 1982. A short summary introduces each chapter to indicate work scope. Information about quality assurance and safety programs is presented in Chapter 6, along with a tabulation of analyses rendered. Publications, oral presentations, professional activities, educational programs, and seminars are cited in Chapters 7 and 8. Approximately 61 articles, 32 proceedings publications and 37 reports have been published, and 107 oral presentations were given during this reporting period.

  6. Chemistry Division: Annual progress report for period ending March 31, 1987

    Energy Technology Data Exchange (ETDEWEB)

    1987-08-01

    This report is divided into the following sections: coal chemistry; aqueous chemistry at high temperatures and pressures; geochemistry of crustal processes to high temperatures and pressures; chemistry of advanced inorganic materials; structure and dynamics of advanced polymeric materials; chemistry of transuranium elements and compounds; separations chemistry; reactions and catalysis in molten salts; surface science related to heterogeneous catalysis; electron spectroscopy; chemistry related to nuclear waste disposal; computational modeling of security document printing; and special topics. (DLC)

  7. Chemistry Division: Annual progress report for period ending March 31, 1987

    International Nuclear Information System (INIS)

    This report is divided into the following sections: coal chemistry; aqueous chemistry at high temperatures and pressures; geochemistry of crustal processes to high temperatures and pressures; chemistry of advanced inorganic materials; structure and dynamics of advanced polymeric materials; chemistry of transuranium elements and compounds; separations chemistry; reactions and catalysis in molten salts; surface science related to heterogeneous catalysis; electron spectroscopy; chemistry related to nuclear waste disposal; computational modeling of security document printing; and special topics

  8. New generation of bottom anti-reflective coatings (BARCs): photodefinable BARCs

    Science.gov (United States)

    Guerrero, Douglas J.; Trudgeon, Tonya

    2003-06-01

    Three polymer systems, polycarbonates, polysulfonyl esters, and hybrid carbonate-sulfones, were evaluated as materials for a new generation of bottom anti-reflective coatings (BARCs). The polymers were tested for their solubility in accepted industry solvents, resistance to photoresist solvents after casting, thermal stability, and photosensitivity. From these, polysulfonyl esters show more promising properties as photodefinable BARCs than the other systems because of their good solvent solubility and resistance to photoresist solvents after casting. These polymers can be formulated in ethyl lactate (EL) or 1-methoxy-2-acetoxypropane (PGMEA) but are insoluble in the same solvents after curing above 170°C. The polysulfonyl esters were thermally stable up to ~300°C in air. The cured films were exposed with DUV light at 200 to 600 mJ/cm2. After exposure, the films can be easily removed in alkaline developer.

  9. Installation and commissioning of Scandiflash-450 flash X-ray generator at BARC, Visakhapatnam

    International Nuclear Information System (INIS)

    Energetics and Electromagnetics Division, BARC, Visakhapatnam has possessed a Flash X-ray radiography (FXR) system, make: Scandiflash, Sweden. This installation and commissioning of the system has been done by ourselves. Few problems have been detected during installation and commissioning. The troubleshooting of the system has been done. Somewhere we needed to replace the original components by indigenously made one. The complete installation and commissioning has been reportedly as far as detailed possible. Presently the system is working with satisfaction. The installed facility is being used as one of the primary means of diagnostics in many of the ongoing experiments. (author)

  10. Criticality calculations on BARC parallel processor- ANUPAM

    International Nuclear Information System (INIS)

    Parallel processing offers an increase in computational speed beyond the technological limitations of single processor systems. BARC has recently developed a parallel processing system (ANUPAM) based Multiple Instruction Multiple Data (MIMD) distributed memory architecture. In the work reported here, the sequential version of Monte Carlo code MONALI is modified to work on the ANUPAM for criticality calculations. The problem of random number generation in a parallel environment is handled using leapfrog technique. The code is modified to use variable number of slave processors. The parallel version of MONALI is used to calculate multiplication factor, fluxes and absorptions in one of the 8x8 fuel assemblies of IAEA BWR benchmark in 69 groups. To compare gain in execution time, the benchmark is also solved on LANDMARK and ND-570 systems (both serial) using the sequential version of the code. Speedup and efficiencies achieved on varying the number of slave processors are encouraging. (author). 5 refs., 1 tab

  11. Analytical Chemistry Division annual progress report: For period ending December 31, 1987

    International Nuclear Information System (INIS)

    This report is divided into analytical spectroscopy; radioactive materials analysis; inorganic chemistry; organic chemistry; ORNL environmental programs; quality assurance, safety, and training; supplementary activities; and presentation of research results

  12. Analytical Chemistry Division annual progress report: For period ending December 31, 1987

    Energy Technology Data Exchange (ETDEWEB)

    1988-05-01

    This report is divided into analytical spectroscopy; radioactive materials analysis; inorganic chemistry; organic chemistry; ORNL environmental programs; quality assurance, safety, and training; supplementary activities; and presentation of research results.

  13. Progress report, Chemistry and Materials Division, 1 April to 30 June, 1979

    International Nuclear Information System (INIS)

    Research results are reported by groups investigating ion penetration, nuclear methods of analysis, accelerator operation, general analytical chemistry, radoactivity measurement, deuterium analysis, electrochemistry, mass spectrometry and fuel analysis, radiation chemistry and laser photochemistry, hydrogen-water exchange, isotope chemistry, surface chemistry, and electron microscopy. Work in an associated laboratory at the University of Toronto on isotopic changes in reaction rates is reported. (L.L.)

  14. Progress report, Chemistry and Materials Division, April 1 to June 30, 1977

    International Nuclear Information System (INIS)

    Research results are reported in such areas as ion penetration, electron microscopy, metal physics and radiation damage, nuclear methods of analysis, fuel analysis, and general analytical chemistry, electrochemistry, radiation chemistry, hydrogen-deuterium exchange, and surface chemistry of nuclear materials like zirconium base alloys. (E.C.B.)

  15. Neutron beam research at BARC (India) and international collaboration

    Energy Technology Data Exchange (ETDEWEB)

    Ramanadham, M.; Mukhopadhyay, R. [Solid State Physics Division, Bhabha Atomic Research Centre, Mumbai (India)

    2001-03-01

    Neutron beam research started in India more than four decades ago. Presently, the National Facility for Neutron Beam Research, NFNBR is located in Dhruva, a 100 MW research reactor. The entire facility, including the development of neutron detectors, is the result of indigenous efforts of the participating scientists from Bhabha Atomic Research Centre, BARC. NFNBR is accessible to national and international collaborations, and about forty research groups from various institutions have already availed this facility. Active collaboration with ISIS started since 1984, when the day-1 spectrometer, built at BARC, became operational at ISIS. The collaboration continued with the fabrication, at BARC, of parts for OSIRIS spectrometer. Many neutron beam researchers from BARC have carried out collaborative experiments using the neutron sources at USA, France, Germany, Switzerland, and Japan. (author)

  16. Neutron beam research at BARC (India) and international collaboration

    International Nuclear Information System (INIS)

    Neutron beam research started in India more than four decades ago. Presently, the National Facility for Neutron Beam Research, NFNBR is located in Dhruva, a 100 MW research reactor. The entire facility, including the development of neutron detectors, is the result of indigenous efforts of the participating scientists from Bhabha Atomic Research Centre, BARC. NFNBR is accessible to national and international collaborations, and about forty research groups from various institutions have already availed this facility. Active collaboration with ISIS started since 1984, when the day-1 spectrometer, built at BARC, became operational at ISIS. The collaboration continued with the fabrication, at BARC, of parts for OSIRIS spectrometer. Many neutron beam researchers from BARC have carried out collaborative experiments using the neutron sources at USA, France, Germany, Switzerland, and Japan. (author)

  17. Advances in nuclear desalination in BARC

    International Nuclear Information System (INIS)

    As a part of our programme to improve the quality of life of our large population by systematic induction of nuclear energy, BARC has been engaged in R and D activities on desalination since 1970s. The desalination activities were part of a programme of setting up a number of demonstration plants for the energy intensive processes such as desalination of seawater, electrolytic production of hydrogen and electro thermal production of phosphorus. These activities are presently termed by IAEA as 'Non Electrical Application of Nuclear Energy'. Over a period of time, BARC has successfully developed desalination technologies based on multi-stage flash (MSF) evaporation, reverse osmosis (RO) and low temperature evaporation (LTE). In the field of thermal desalination, efforts are directed towards utilizing the low-grade heat and the waste heat as energy input for desalination. In membrane desalination, work is being carried out on newer pre-treatment methods such as use of ultra filtration, energy reduction and higher membrane life. Based on operational experience of MSF and RO plants at Trombay, BARC has undertaken establishment of the Nuclear Desalination Demonstration Project (NDDP), Kalpakkam. NDDP consists of a hybrid MSF-RO desalination plant of 6300 m3/d capacity (4500 m3/d MSF and 1800 m3/d Sea Water Reverse Osmosis (SWRO)) coupled to 2 x 170 MWe Pressurised Heavy Water Reactors (PHWRs) at MAPS, Kalpakkam. The requirements of seawater, steam and electrical power for the desalination plants are met from MAPS I and II which are around 1.5%, 1.0% and 0.5% of available at MAPS. The hybrid plant has provision for redundancy, utilization of streams from one to other and production of two qualities of products for their best utilization. The 1800 m3/d SWRO plant, which is already commissioned in August 2002, is designed to operate at relatively lower pressure (51.5 bar during 1st year and 54 bar during 3rd year) to save energy, employs lesser pre-treatment (because of

  18. Radiochemistry Division: annual progress report for 1980

    International Nuclear Information System (INIS)

    The research and development (R and D) activities of the Radiochemistry Division of the Bhabha Atomic Research Centre (BARC), Bombay, during 1980 are reported in the form of individual summaries under the headings: reactor chemistry, heavy element chemistry, process chemistry (of actinides), nuclear chemistry and instrumentation. Some of the highlights of the R and D activities are: (1) setting up of the facilities for the prepa.ration of (U,Pu)O2 microspheres by sot-gel process on laboratory scale, (2) studies on synergistic extraction of Am, Cm, Bk, Cf, Th(IV), Np(IV) and Pu(IV) with mixtures of TTA and oxodonor6s like TBP, (3) kinetics of radiation induced oxidation of Pu(IV) and that of reduction of Pu(VII), (4) determination of fission yields of 138Xe, 139Cs, 252Cf and 229Th, (5) measuring of gamma ray abundance of 229Th and isotopic ratios in thorium and plutonium and (6) design and fabrication of an osmistor for the determination of the molecular weight of actinide complexes. A list of papers published in journals and papers presented at conference/symposia during the year is also given. (M.G.B.)

  19. Symposium introduction: the first joint American Chemical Society Agricultural and Food Chemistry Division and the American Chemical Society International Chemical Sciences Chapter in Thailand

    Science.gov (United States)

    The American Chemical Society (ACS) Agricultural and Food Chemistry Division (AGFD) and the ACS International Chemical Sciences Chapter in Thailand (ICSCT) worked together to stage the “1st Joint ACS AGFD - ACS ICSCT Symposium on Agricultural and Food Chemistry,” which was held in Bangkok, Thailand ...

  20. Molecular laser isotope separation programme at BARC

    International Nuclear Information System (INIS)

    Little over thirty years ago, BARC ventured into a new frontier of scientific research: Molecular Laser Isotope Separation (MLIS) programme based on the interaction of lasers with molecules. The initial project was a scheme to produce enriched uranium. The idea was to use the intense, monochromatic light of lasers to break the chemical bonds of only those molecules containing the fissionable isotope uranium-235. At present the programme is evolving around separation of low and middle mass isotopes, namely sulphur 34/33/32, oxygen 17/18, carbon 13/12, hydrogen T/D/H to be followed by an advanced engineering programme designed to lead to a demonstration plant. The latest results have come very close to the design parameters specified for a full-scale separation of carbon isotopes. All these expertise provide an infra structure for future front line R and D activities in the general area of Laser Photochemical Technology which would include i) LIS of other useful elements ii) Material processing and iii) Fuel reprocessing/ waste management (author)

  1. Radiological and Environmental Research Division annual report, October 1979-September 1980: fundamental molecular physics and chemistry

    International Nuclear Information System (INIS)

    Research is reported on the physics and chemistry of atoms, ions, and molecules, especially their interactions with external agents such as photons and electrons. Individual items from the report were prepared separately for the data base

  2. Progress report, Chemistry and Materials Division, October 1 to December 31, 1976

    International Nuclear Information System (INIS)

    A summary is given of research largely centering around radiation effects on materials, radiation and analytical chemistry, surface studies, and materials science, esp. zirconium base alloys and their problems and properties in nuclear service. (E.C.B.)

  3. Progress report: Chemistry and Materials Division, 1983 January 1 - June 30

    International Nuclear Information System (INIS)

    The research progams in solid state science, analytical and physical chemistry and materials science are outlined for the first half of 1983. Studies are being carried out in the areas of surface science, isotope separation and irradiation effects on zirconium

  4. Popularization of groundnut varieties through BARC-UASD collaboration

    International Nuclear Information System (INIS)

    To boost the productivity of groundnut, farmers need to have an access to improved seeds of the right variety, at the right time, at the right place, at an affordable price. The awareness and benefits of the improved varieties and quality seeds of groundnut was carried out by carefully planned co-ordinated educational systems such as field trials, demonstrations, field days, training farmers, interface meetings through the well established network of the University and mass media promotional tools. The BARC-UASD collaboration led to the popularization of BARC groundnut varieties like TAG-24, TG-26, TPG-41 and TDG-39 among the farming community of north Karnataka. (author)

  5. Overview of slow positron beam based research in BARC

    International Nuclear Information System (INIS)

    Energy distributed positrons emitted from the beta decay of radioisotopes provide averaged information about the bulk of the sample. With the advent of slow positron beams, it has become possible to monoenergize positrons emitted from the radioisotope sources and probe surfaces, buried interfaces and multilayer structures. The positron emitted from the source are made to thermalize and transported to the sample as a monochromatic beam with the help of electric and magnetic field assemblies to carry out depth dependent studies. The slow positron beam at Radiochemistry Division, BARC is currently being utilized for depth profile studies in organic semiconductor (OSC) thin films and defect structure in metallic samples. In addition, pore architecture in membranes referring to pore interconnectivities have been addressed. The present talk entails studies on nanoscale organics and touches upon the utility of positron beam technique to address pore architecture. Single and multilayer nanoscale films of metal phthalocyanines (MPc) have been studied to probe buried interfaces and nanostructural variations as a function of different growth parameters. The sensitivity of positron to defects helped in identifying structural disorder resulting due to the heteroepitaxy between different materials. The ability to control the depth of penetration has helped to probe buried interfaces in these organic heterostructures. The positron diffusion length is derived from the Doppler broadening profiles (S-E) arid compared with charge carrier mobility in OSCs. Effect of post deposition annealing temperature on the nanostructure of MPc thin films has also been studied. The S-E profile together with S-W correlation helped in identifying nanostructural inhomogeneities in the film. In another study, the defect structure at the interface of OSC and the dielectric substrate has been examined for the films grown on SiO2/Si substrates, unmodified and modified, as the case may be, using self

  6. Investigation of UFO defect on DUV CAR and BARC process

    Science.gov (United States)

    Yet, Siew Ing; Ko, Bong Sang; Lee, Soo Man; May, Mike

    2004-05-01

    Photo process defect reduction is one of the most important factors to improve the process stability and yield in sub-0.18um DUV process. In this paper, a new approach to minimize the Deep-UV (DUV) Chemically Amplified Resist (CAR) and Bottom Anti-Reflective Coating (BARC) induced defect known as UFO (UnidentiFied Object) defect will be introduced. These defects have mild surface topography difference on BARC; it only exists on the wide exposed area where there is no photoresist pattern. In this test, Nikon KrF Stepper & Scanner and TEL Clean track were used. Investigation was carried out on the defect formulation on both Acetal and ESCAP type of photoresist while elemental analysis was done by Atomic Force Microscope (AFM) & Auger Electron Spectroscopy (AES). Result indicated that both BARC and photoresist induce this UFO defect; total defect quantity is related with Post Exposure Bake (PEB) condition. Based on the elemental analysis and process-split test, we can conclude that this defect is caused by lack of acid amount and low diffusivity which is related to PAG (Photo Acid Generator) and TAG (Thermal Acid Generator) in KrF photoresist and BARC material. By optimizing photoresist bake condition, this UFO defect as well as other related defect such as Satellite defect could be eliminated.

  7. Status report of 6 MV FOTIA and LEAF accelerators at BARC

    International Nuclear Information System (INIS)

    Two Accelerators, i.e. 6 MV Folded Tandem Ion Accelerator (FOTIA) facility and A Low Energy Accelerating Facility (LEAF) are operational at Ion Accelerator Development Division, BARC. The accelerated beams of both light and heavy ions from these facilities are being used extensively by various divisions of BARC, Universities, lIT Bombay and other R and D labs across the country for basic and applied research. The ion beam are being used for multi elemental analysis by PIXE and PIOE techniques, irradiation damage studies on structural material and live biological cells. LEAF employs the versatile SNICS-II (Source of Negative Ion by Cesium Sputtering) ion source and mass selection is done by a 90 degree magnet, which has a mass energy product of 66 MeV. This facility can deliver single negative ion beams of energy upto 50 keV. Negative ion beams of H-, Li-, C-, O-, Al-, Fe-, F-, Si-, S-, P-, Sb, Ag- and Au- beams has been extracted. Various Experiments have been done with H-, Li-, C-, Si-, S-, P- and Sb- beams. Typical particle currents available from this facility are few micro amperes. This facility is extensively used for H- ion implantation on lnAs/GaAs quantum dots at various energies between 50 keV to 20 keV, ion implantation on semiconductors and study on effect of irradiation effect over quantum dots for infrared photodetectors (QDIPs) and solar cell application and for testing of LEHIPA diagnostic devices and control software. Network based control system of this accelerator is used, apart from normal control operation, to auto start up and shutdown the accelerator and it is successfully working last few years. This paper will present the status report of FOTIA and LEAF with details and salient features of the facility, its applications and utilization. (author)

  8. Progress report, Chemistry and Materials Division: 1982 October 1 -December 31

    International Nuclear Information System (INIS)

    Solid state studies included work on the trapping vacancies of Au atoms by the backscattering-channeling method, and investigation into mixing across interfaces resulting from heavy ion bombardment. In radiation chemistry, computer simulations of nitrogen atom yield from radiolysis of N2-O2 mixtures were found to agree with experiment. Surface science research included studies of temporal oscillations in the kinetics of oxidation of carbon monoxide over the (100) face of single-crystal platinum. In analytical chemistry, research projects included the determination of thorium-230 in ores, use of a high specific activity methyl bromide tracer in commercial applications, determination of burnup in (Th,U)02 fuels using HPLC, and development of a simple and quick means to determine D20 content of water grab samples at CANDU sites using a small soft-bulb hydrometer. Materials science studies included experiments on true incubation time for stress-corrosion cracking in iodine vapour, examination of hydrogen contents of fuel cladding from bundles with failed pins, and studies of initiation of ΣnodularΣ corrosion of fuel cladding in high-temperature steam

  9. Progress report, Chemistry and Materials Division: 1982 July 1 - September 30

    International Nuclear Information System (INIS)

    During the third quarter of 1982, work in solid state studies included study of energy spectra of Auger electrons from a silicon single crystal, use of an excimer laser to anneal an aluminum crystal implanted with iron atoms, studies of defects created by helium ion irradiation of a dilute copper-indium alloy crystal, and computer simulations of ion channeling in a platinum crystal surface. Work in radiation chemistry on the enhancement of water calorimetry sensitivity continued. A surface science program to understand the temporal oscillations in the oxidation of carbon monoxide over platinum continued with the study of the interaction of oxygen with the (100) crystallographic face of platinum. Studies in analytical chemistry included a comparison of fuel burnup results using 145Nd + 146Nd and 148Nd, and a preliminary investigation into methods of reduction of U(VI) to U(IV), particularly electrolytic reduction. Materials science work continued on the fracture surfaces of Exel alloys cracked in hydrogen gas, the true incubation time for stress corrosion cracking in cesium-cadmium vapour mixtures, evidence for a previously unknown hexagonal phase of germanium, growth experiments in the DIDO reactor on swaged single-crystals, and examination of the first zirconium specimen purified by electrotransport in the CRNL equipment

  10. Radiochemistry Division : annual progress report for 1978

    International Nuclear Information System (INIS)

    The research and development (R and D) activities of the Radiochemistry Division of the Bhabha Atomic Research Centre (BARC), Bombay, during 1978 are reported in the form of individual summaries under the headings: reactor chemistry, heavy element chemistry, process chemistry, radioanalytical chemistry and services, nuclear chemistry, and instrumentation. Some of the highlights of the R and D activities are: (1) preparation of microspheres of uranium oxide and uranium-thorium oxides by sol-gel process, (2) study of vaporization thermodynamics of Th and U by transpiration and boiling techniques, (3) preparation and characterisation of uranium(III) sulphates and double sulphates by X-ray, thermal and infra-red analysis, (4) extraction of trivalent actinides and lanthanides by long chain amines from chloride solutions, (5) study of radiation chemical behaviour of U(VI) in hydrochloric acid and sulphuric acid media, (6) purification and concentration of neptunium by the primary and secondary amines, (7) development of gamma spectroscopic method for determination of isotopic composition of plutonium using low energy gamma rays of plutonium isotopes, (8) standardisation of method of determination of isotopic abundances of uranium at nanogram level by thermal ionisation mass spectroscopy, (9) extraction photometric determination of Pu(IV) and Np(IV) present in mixtures, (10) study of various aspects of nuclear fission such as charge distribution, mass distribution and fragment angular momentum in low energy fission of actinides, and (11) fabrication of: (a) spark counting unit for counting fission tracks in their plastic films, (b) autoranging alpha monitor to be used with fractionating column, (c) remote pipetter for use in hot cells and (d) a thermoluminescence unit for glovebox operation. (M.G.B.)

  11. Hahn-Meitner-Institute, Division of Radiation Chemistry. Scientific report 1982

    International Nuclear Information System (INIS)

    In 1982, the follow radiation chemistry projects were carried out by HMI: 1. interface surface processes and energy transfer (fast chemical reactions at the interface surfaces, application to the storage and conversion of solar energy); 2. pulse radiolysis and kinematics (generation and investigation of short-lived high-activity chemical particles; interaction of low-energy ions, atoms, molecules and molecule aggregate bodies); 3. insulators and plastics (investigation of electronic and ionic primary processes in negatively electric gases; radiation-induced variations of dielectric properties; radiation damage and the underlying processes of decomposition by oxidation in natural and synthetic polymers; photo-induced polymerization). To round off the report there is a comprehensive list of publications and lectures. (RB)

  12. Biennial report of Radiochemistry Division 1997-1998

    International Nuclear Information System (INIS)

    This report describes the work carried by Radiochemistry Division of BARC during the period 1997 and 1998. The work is divided in three main branches (1) Nuclear Chemistry (2) Actinides Chemistry (3) Actinide Spectroscopy. During this period research in nuclear chemistry was focussed on nuclear fission, nuclear reactions, neutron activation analysis, use of nuclear techniques for understanding of physico-chemical phenomena and developmental activities in non-destructive assay techniques. The research work on chemistry of actinides was directed on basic as well as applied studies related to complexation and extraction behaviour of actinides and lanthanides with a variety of novel ligands. The choice of complexing ligands was made with a view to examining the suitability in reprocessing streams, treatment of high level active waste and recovery of valuables. The third part spectroscopy of actinides describes the basic studies solid state spectroscopy of actinides and analytical spectroscopy for trace metallic assay. The solid state spectroscopy investigations were carried out using EPR, ENDOR, fluorescence, thermally stimulated luminescence and photo acoustic for spectroscopy techniques. In the analytical spectroscopy work a lot of stress was given on finding suitable chemical separation procedures for pre concentration of trace metals and a determination by ICP-AES/ETA-AAS techniques. (author)

  13. Proceedings of the frst joint american chemical society agricultural and food chemistry division – american chemical society international chemical sciences chapter in Thailand symposium on agricultural and food chemistry

    Science.gov (United States)

    This Proceedings is a compilation of papers from contributed oral and poster presentations presented at the first joint symposium organized by the American Chemical Society Agricultural and Food Chemistry Division and the American Chemical Society International Chemical Sciences Chapter in Thailand ...

  14. Progress report: Chemistry and Materials Division, 1982 January 1 to March 31

    International Nuclear Information System (INIS)

    Solid state studies in this period included observations of annealing of irradiation damage in Ni-In and Al-Sn alloys. Extensive experiments on the radiation chemistry of nitrogen-oxygen mixtures have been completed enabling comparisons to be made with calculations based on physical data. The program MAKSIMA-CHEMIST has been used to calculate the effects of variables such as concentration of dissolved gases on the accuracy of water calorimeters. Work in laser photochemistry continued with measurement of the infrared spectra of methylamine with and without deuterium substituted for the amino-hydrogens. Spectroscopic data for chemical species involved in laser isotope separation processes are being taken by laser magnetic resonance spectroscopy Improvements in detection of anions separated on columns of styrenedivinylbenzene with hydrophobic modifiers have been achieved by use of conductivity detection in place of ultraviolet absorption. The accuracy of the inert gas fusion method for measuring hydrogen in zirconium was verified. Research on zirconium alloys continued with work on gaseous hydrogen cracking, metal vapor embrittlement, nodular corrosion, and irradiation with helium ions at elevated temperatures

  15. Progress report, Chemistry and Materials Division, 1 October - 31 December, 1980

    International Nuclear Information System (INIS)

    Experiments with aluminum-indium single crystals in which the indium atoms occupy interstitial positions have enabled the first direct measurements of ion flux gradients to be made for a particular channel. A search is being carried out for tri-, tetra-, and hexa-vacancy clusters centered on interstitial indium or tin atoms in irradiated copper single crystal alloys. Work on hydrogen and helium ion scattering at keV energies from tungsten and tungsten oxide. Research is being carried out on dithiothreitol in aqueous solution with nitrate ion to improve understanding of the radiation chemistry of sulphydryl compounds. A short pulse carbon dioxide laser is being used in experiments on the multiphoton absorption and decomposition of alcohols. The separation factor for isotope exchange between heavy water and hydrogen gas has been measured as a function of temperature from 5 to 950C. A procedure has been developed for the determination of gadolinium, samarium, europium and dysprosium at levels down to 10-7g.g-1 in ThO2 by emission spectroscopy. It is now possible to determine uranium with high precision and accuracy in 2 percent uranium-thorium dioxide fuel by controlled potential coulometry. It has been shown that cracking of Zr-2.5 percent Nb in hydrogen gas is not pressure-dependent. The solubility of tin in zirconium has been studied. (L.L.)

  16. Progress report, Chemistry and Materials Division, October 1 to December 31, 1978

    International Nuclear Information System (INIS)

    Recent experiments have been successful in showing that molecular orbital radiation is polarized. Further experiments with both nitrogen-nitrous oxide and nitrogen-oxygen mixtures have failed to resolve the discrepancy in the yield of excited nitrogen atoms formed in the radiolysis of nitrogen. An equation describing the observed relationship between the average number of photons absorbed by a molecule in a laser field and the energy fluence of the laser has been derived. A computer program is being written which calculates nuclear magnetic resonance spectrometer lineshapes for intermolecular hydrogen isotope exchange. Two absorption states of oxygen on the (111) crystal face of platinum have been observed and characterized by changes in work function and thermal desorption spectroscopy. Inductively-coupled plasma (ICP) emission spectroscopy is being utilized in the total sample analysis of XL-alloy, a zirconium-tin-niobium-molybdenum alloy for which no certified standard exists. The analytical chemistry facilities set up to support the mixed oxide fuel fabrication line are functioning satisfactorily. The existence of a high-velocity hydrogen-induced cracking process has been confirmed for zirconium alloys exposed to gaseous hydrogen at room temperature. Positron annihilation studies on neutron-irradiated zirconium have been interpreted as implying that radiation damage at 375 K is in the form of isolated crystal lattice vacancies rather than vacancy clusters. (OST)

  17. Chemical Engineering Division reactor fuels and materials chemistry research: July 1976--September 1977. [LMFBR; GCFR

    Energy Technology Data Exchange (ETDEWEB)

    None

    1978-07-01

    Reactor safety studies were directed primarily toward obtaining high-temperature physical property data for use in reactor safety analyses. Spectroscopic data and an oxygen-potential model were used to calculate thermodynamic properties applicable to the equations of state of (U,Pu)O/sub 2/ and UO/sub 2/. Work was continued on the compilation of standard sets of property data on reactor fuels and materials. The viscosity of molten alumina and the thermal diffusivity of molten UO/sub 2/ were measured as functions of temperature. Modeling and chemical-interaction studies related to post-accident heat removal were conducted. The efforts in sodium technology supported the LMFBR program. Studies were conducted to explore the feasibility of upgrading the quality of commercial-grade sodium and sodium from decommissioned reactors to provide new sources of reactor-grade sodium. Work was started on the development of methods for disposal of contaminated alkali--metal wastes. In work related to tritium, a model was developed to describe the behavior of tritium in an LMFBR, tritium permeation through steam-generator materials was measured, and an in-sodium tritium meter was developed and tested in reactor environments. Work in the area of fuels and materials chemistry was conducted in support of the GCFR program. Portions of the cesium--uranium--oxygen phase diagram were investigated to aid in understanding the reaction of fission-product cesium with urania blanket material, particularly in relation to axial gas flow in vented GCFR fuel pins. Data on the oxidation of vanadium, niobium, and titanium were assessed to determine the suitability of these materials for use in controlling oxidative attack of stainless steel cladding.

  18. Conceptualization and development of a helium liquefier at BARC, Mumbai

    International Nuclear Information System (INIS)

    Indigenous development of helium liquefiers is regarded as a high priority area at BARC, Mumbai. A precooled Collin's cycle based helium liquefier conceived to work between pressure limits of 0.105 and 1.3 MPa (a) and with mass flow rate of 62 g/s is reported in the present paper. The system is designed to achieve a liquefaction rate of about 57 l/hr with the lowest temperature as 4.86 K. Effect of different heat exchanger effectiveness and turbine efficiency values on the liquefier performance has also been theoretically studied and reported here. Design and development methodology of the liquefier cold box has been dealt with. The present paper also describes the current state of installation and commissioning activities of the above described helium liquefier at BARC, Mumbai. First trial runs are expected soon after the completion of the transferline circuit from the liquefier cold box to the liquid helium receiver vessel. (author)

  19. Status report on the folded tandem ion accelerator at BARC

    Indian Academy of Sciences (India)

    P Singh; S K Gupta; M J Kansara; A Agarwal; S Santra; Rajesh Kumar; A Basu; P Sapna; S P Sarode; N B V Subrahmanyam; J P Bhatt; P J Raut; S S Pol; P V Bhagwat; S Kailas; B K Jain

    2002-11-01

    The folded tandem ion accelerator (FOTIA) facility set up at BARC has become operational. At present, it is used for elemental analysis studies using the Rutherford backscattering technique. The beams of 1H, 7Li, 12C, 16O and 19F have been accelerated up to terminal voltages of about 3 MV and are available for experiments. The terminal voltage is stable within ± 2 kV. In this paper, present status of the FOTIA and future plans are discussed.

  20. Current programmes on physical metallurgy and related areas in BARC

    International Nuclear Information System (INIS)

    Current research and development programmes on physical metallurgy and related areas from the following Divisions of Bhabha Atomic Research Centre are included in this report : Atomic Fuels Division, High Pressure Physics Division, Metallurgy Division, Radio Metallurgy Division, Solid State Physics Division. Important publications corresponding to each activity have also been listed. (author)

  1. Bhabha Atomic Research Centre (BARC) annual report 1985-86

    International Nuclear Information System (INIS)

    The research and development (R and D) activities and accomplishments during the financial year 1985-86 of the Bhabha Atomic Research Centre, Bombay are reported. The BARC is a multidisciplinary laboratory engaged in R and D activities in the field of nuclear energy. The main thrust of the R and D activities of the Centre is aimed at: (1) achieving targets of India's nuclear power programme, (2) indigenisation of the various steps in the nuclear fuel cycle, (3) developing and propagating peaceful applications of nuclear science and technology in the country in fields such as agriculture, medicine and industry, (4) providing scientific support to regulatory functions associated with nuclear facilities and radiation protection activities in the country. The salient features of these R and D activities are described in the chapters entitled: (1) physical sciences, (2) chemical sciences, (3) materials and materials sciences, (4) life sciences, (5) radioisotopes, (6) reactors, (7) fuel cycle, (8) health and safety, (9) electronics and instrumentation, and (10) technical services. A list of publications by the staff-members during the report period is given at the end of each chapter. The R and D activities of the outstation units of BARC, namely, Nuclear Research Laboratory at Srinagar, High Altitude Research Laboratory at Gulmarg, Variable Energy Cyclotron Centre at Calcutta and Gauribidanur Seismic Array near Bangalore are also covered in the report. Other activities of the Centre include technology transfer and manpower training which are also described briefly. (M.G.B.)

  2. Detection of radioactive material in public places: BARC's handheld tele radionuclide detector

    International Nuclear Information System (INIS)

    Electronics Division, BARC has developed a compact and portable system for detection of radioactive nuclides like 60Co, 137Cs etc. with high levels of radioactivity. These radioactive sources, because of their long life and relative ease of availability, have the potential of being used in radiological dispersion devices (dirty bombs) for panic creation in public places. The unit comprises of a compact CsI detector, photo diode and front-end electronics, micro-controller, a GPS module and Blue-tooth connectivity. The application software running on the mobile phone provides the interface as well as transmission of data to remote server. This is highly suitable for covert operations. The person, who carries this instrument, suitably camouflaged, also has a mobile phone in his pocket, which is connected to the system via blue tooth. On detection of activity above set limit, the system sends an alarm to the mobile phone. The mobile phone can be kept in vibration mode in order to avoid any undue attention. The graphical display on screen of mobile phone provides an indication of activity and the isotope identification. Simultaneously, the mobile phone sends information about the activity detected and source identification automatically along with the location of the instrument (longitude and latitude), provided by the GPS module in the instrument, to a remote server. The remote server provides radiation information on a map with position-coordinates. Based on this, necessary action can be initiated by the security personnel. (author)

  3. Analysis of Whiskey by Dispersive Liquid-Liquid Microextraction Coupled with Gas Chromatography/Mass Spectrometry: An Upper Division Analytical Chemistry Experiment Guided by Green Chemistry

    Science.gov (United States)

    Owens, Janel E.; Zimmerman, Laura B.; Gardner, Michael A.; Lowe, Luis E.

    2016-01-01

    Analysis of whiskey samples prepared by a green microextraction technique, dispersive liquid-liquid microextraction (DLLME), before analysis by a qualitative gas chromatography-mass spectrometry (GC/MS) method, is described as a laboratory experiment for an upper division instrumental methods of analysis laboratory course. Here, aroma compounds in…

  4. Progress report: 1996 Radiation Safety Systems Division

    International Nuclear Information System (INIS)

    The activities of Radiation Safety Systems Division include (i) development of specialised monitoring systems and radiation safety information network, (ii) radiation hazards control at the nuclear fuel cycle facilities, the radioisotope programmes at Bhabha Atomic Research Centre (BARC) and for the accelerators programme at BARC and Centre for Advanced Technology (CAT), Indore. The systems on which development and upgradation work was carried out during the year included aerial gamma spectrometer, automated environment monitor using railway network, radioisotope package monitor and air monitors for tritium and alpha active aerosols. Other R and D efforts at the division included assessment of risk for radiation exposures and evaluation of ICRP 60 recommendations in the Indian context, shielding evaluation and dosimetry for the new upcoming accelerator facilities and solid state nuclear track detector techniques for neutron measurements. The expertise of the divisional members was provided for 36 safety committees of BARC and Atomic Energy Regulatory Board (AERB). Twenty three publications were brought out during the year 1996. (author)

  5. Progress report of Technical Physics Division: April 1980 - March 1982

    International Nuclear Information System (INIS)

    Activities, with an individual summary of each, of the Technical Physics Division (TPD) of the Bhabha Atomic Research Centre (BARC), Bombay are reported for the period April 1980 - March 1982. The major thrust of the TPD's work has been in: (i) design and fabrication of instruments, devices and equipment and (ii) development of techniques in the frontline research and technology areas like vacuum science, surface analysis, cryogenics and crystal growing. The Division also provided custombuilt electronics equipment, vacuum systems and glass components and devices to the various Divisions of BARC and other units of the DAE. Training and manpower development activities and technology transfer activities are also reported. Lists of seminars, colloquia, publications during the period of the report are given. (M.G.B.)

  6. Development of AUC-based process at BARC for production of free-flowing and sinterable UO2 powder

    International Nuclear Information System (INIS)

    Ammonium uranium carbonate (AUC) process has been developed and industrially used in Germany for preparation of free-flowing and sinterable UO2 powder for fabrication of UO2 fuel pellets for light water reactors (LWR). Efforts are underway at Bhabha Atomic Research Centre (BARC) for developing AUC-based process which would yield free-flowing UO2 powder suitable for direct pelletisation and sintering to very high density (> 96% T.D.) UO2 fuel pellets for pressurised heavy water reactors (PHWRs) in India. The first phase of this work has been completed jointly by Chemical Engineering Division (ChED) and Radiometallurgy Division (RMD) in batches of 1.5 kg. It was possible to fabricate UO2 pellets of density 93-95% T.D. on a reproducible basis. At ChED, process parameters have been optimised for fabrication of AUC with suitable physical properties in batches of 1.5 kg (U), starting with nuclear pure uranyl nitrate solution. At RMD calcination parameters of AUC was optimised in batches of 500 g for obtaining free-flowing UO2 powder, suitable for direct pelletisation and sintering. The pelletisation and sintering have been carried out at Radiometallurgy Division in batches of 1-1.5 kg. The maximum achievable density of UO2 pellets has been in the range of 95.5-96% T.D. (author). 11 refs

  7. Nuclear Agriculture and Biotechnology Division, Bhabha Atomic Research Centre (BARC, Mumbai 400085, India

    Directory of Open Access Journals (Sweden)

    Ashok Badigannavar

    2015-08-01

    Full Text Available Phytic acid is the major storage form of phosphorus in cereals. It binds with nutritionally important metals and affects mineral bioavailability. The present study analyzed phytic acid, inorganic phosphorus (IP content, seed weight, and grain yield in 98 sorghum landraces and varieties grown in two environments to evaluate genotypic and environmental effects and to determine trait stability. Genotypic effects and genotype × interaction were significant for phytic acid concentration and yield components. A promising landrace, Malkhed-1, had the lowest phytic acid (0.015 mg g− 1 concentration, with a higher yield (70.02 g plant− 1, than the check variety M-35-1 in both environments. Similarly, among the varieties, Phule Maulee showed the lowest phytic acid (0.07 mg g− 1 and a higher grain yield of 53.15 g plant− 1 in both environments. Phytic acid and IP were negatively correlated (r = − 0.34, whereas grain yield and seed weight were positively correlated (r = 0.20. Cluster analysis based on seed phosphorus traits and yield components identified five and six clusters, respectively. Genotypes containing low phytic acid with high yield identified in this study would be helpful for increasing the bioavailability of mineral nutrients.

  8. Nuclear Agriculture and Biotechnology Division, Bhabha Atomic Research Centre (BARC), Mumbai 400085, India

    OpenAIRE

    Ashok Badigannavar; Girish, G; T.R. Ganapathi

    2015-01-01

    Phytic acid is the major storage form of phosphorus in cereals. It binds with nutritionally important metals and affects mineral bioavailability. The present study analyzed phytic acid, inorganic phosphorus (IP) content, seed weight, and grain yield in 98 sorghum landraces and varieties grown in two environments to evaluate genotypic and environmental effects and to determine trait stability. Genotypic effects and genotype × interaction were significant for phytic acid concentration and yield...

  9. Solid-state RF power amplifiers development at BARC

    International Nuclear Information System (INIS)

    The paper presents the recent developments on solid- RF power amplifiers (SSRFPA) at Bhabha Atomic Research Centre (BARC). Recent developments on solid-state RF power amplifier modules using LDMOS devices higher power output (>800) per module, high power gain (∼20 dB), and moderate DC to RF conversion efficiency (>65%). RF power combiners at various outputs (1-10 kW) at arbitrary input ports have developed. Integral power amplifiers at 325 and 352 MHz have been designed for 1, 3, 5 and 7 kW output. It also includes the 270 W, 352 MHz driver of 1 MW klystron based high power RF system. This SSRFPA has power gain of 22 dB and drain efficiency of 63%. Another RF generator of 300 W, 100 MHz has been specifically developed for RF ion-source of 14 MeV generator. The RF generator has 71 % efficiency. The paper presents details and test results of all the SSRFPA developments. (author)

  10. Status of solid-state power amplifiers development in BARC

    International Nuclear Information System (INIS)

    Various solid-state power amplifiers have been developed to meet the requirements of accelerator needs for BARC and its collaboration projects. These are mainly 352 and 325 MHz RF power amplifiers. The 352 MHz, RF power amplifier have been developed to feed the buncher cavity of the Low Energy High Intensity Proton Accelerator (LEHIPA). Whereas 325 MHz 3 kW and 7 kW solid- state power amplifiers have been designed under the IIFC-Fermilab collaboration. The same technologies will also be used for 200 MeV superconducting accelerator of ADS program. The paper present the technology details of the power amplifier modules, power combiners, dividers and sensors etc. The developed SSPAs are of 3 kW, 325 MHz and 10 kW 352 MHz. Both the power amplifiers have been tested on a 50 ohm load. The 3 kW SSPA has the drain efficiency of 65.3%. The four modules have the power output of 850 W each. This SSPA has the figure of merit of SSPAs (number of modules per kW) is 1.2. The 10 kW SSPA is mainly required to feed the buncher cavity of the LEHIPA. It is combination of 16 power modules of 800 W each at 352 MHz. (author)

  11. Chemistry

    International Nuclear Information System (INIS)

    The chemical research and development efforts related to the design and ultimate operation of molten-salt breeder reactor systems are concentrated on fuel- and coolant-salt chemistry, including the development of analytical methods for use in these systems. The chemistry of tellurium in fuel salt is being studied to help elucidate the role of this element in the intergranular cracking of Hastelloy N. Studies were continued of the effect of oxygen-containing species on the equilibrium between dissolved UF3 and dissolved UF4, and, in some cases, between the dissolved uranium fluorides and graphite, and the UC2. Several aspects of coolant-salt chemistry are under investigation. Hydroxy and oxy compounds that could be formed in molten NaBF4 are being synthesized and characterized. Studies of the chemistry of chromium (III) compounds in fluoroborate melts were continued as part of a systematic investigation of the corrosion of structural alloys by coolant salt. An in-line voltammetric method for determining U4+/U3+ ratios in fuel salt was tested in a forced-convection loop over a six-month period. (LK)

  12. Fundamental molecular physics and chemistry. Radiological and Environmental Research Division annual report, October 1981-December 1982. Pt. 1

    International Nuclear Information System (INIS)

    This document is the twelfth Annual Report of our Fundamental Molecular Physics and Chemistry Program. Scientifically, the work of the program deals with aspects of the physics and chemistry of molecules related to their interactions with photons, electrons, and other external agents. We chose these areas of study in view of our matic goals; that is to say, we chose them so that the eventual outcome of our work meets some of the needs of the US Department of Energy (DOE) and of other government agencies that support our research. First, we endeavor to determine theoretically and experimentally cross sections for electron and photon interactions with molecules, because those cross sections are indispensable for detailed microscopic analyses of the earliest processes of radiation action on any molecular substance, including biological materials. Those analyses in turn provide a sound basis for radiology and radiation dosimetry. Second, we study the spectroscopy of certain molecules and of small clusters of molecules because this topic is fundamental to the full understanding of atmospheric-pollutant chemistry

  13. Distributed UHV system for the folded tandem ion accelerator facility at BARC

    International Nuclear Information System (INIS)

    The 6 MV Folded Tandem Ion Accelerator (FOTIA) Facility at the Nuclear Physics Division, BARC is operational and accelerated beams of both light and heavy ions are being used extensively for basic and applied research. An average vacuum of the order of 10-8-10-9 Torr is maintained for maximum beam transmission and minimum beam energy spreads. The FOTIA vacuum system comprises of about 55 meter long, 100 mm diameter beam lines including various diagnostic devices, two accelerating tubes and four narrow vacuum chambers. The cross sections of the vacuum chambers are 14mm x 24mm for 180 deg., 38mm x 60mm and 19 x 44 mm for the and 70 deg. and 90 deg. bending magnets and Switching chambers respectively. All the beam line components are UHV compatible, fabricated from stainless steel 304L grade material fitted with metal gaskets. The total volume ∼5.8 x 105 cm3 and surface area of 4.6 x 104 cm2, interspersed with total 18 pumping stations. The accelerating tubes are subjected to very high voltage gradient, 20.4 kV/cm, which requires a hydrocarbon free and clean vacuum for smooth operation of the accelerator. Vacuum interlocks are provided to various devices for safe operation of the accelerator. Specially designed sputter ion pumps for higher environmental pressure of 8 atmospheres are used to pump the accelerating tubes and the vacuum chamber for the 180 deg. bending magnet. Fast acting valves are provided for isolating main accelerator against accidental air rush from rest of the beam lines. All the vacuum readings are displayed locally and are also available remotely through computer interface to the Control Room. Vacuum system details are described in this paper

  14. Ceramic nuclear fuels development at BARC - recent activities

    International Nuclear Information System (INIS)

    The ceramic nuclear fuels activities at Bhabha Atomic Research Centre (BARC) in recent years have been in the following areas: - improvisation of process flowsheet for economic and efficient production of high density UO2 fuel pellets on industrial scale for pressurised heavy water reactors (PHWR), - fabrication, thermophysical property evaluation and irradiation-testing of (U, Pu)O2, (Th, Pu)O2 and (Th, U)O2 fuels for PHWRs, - fabrication and thermophysical property evaluation of (U, Pu)O2, (U, Pu)C and (U, Pu)N fueld pellets for liquid metal cooled fast breeder reactors (LMFBR). The conventional ''powder-pellet'' and the advanced ''sol-gel microsphere pelletisation'' (SGMP) processes have been optimised for fabrication of oxide, carbide and nitride fuel pellets of controlled density and microstructure. The SGMP route is dust-free and is ideally suitable for remote fabrication of highly radiotoxic Pu and Pu233 bearing ceramic fuels. For fabrication of UO2 and (U, Pu)O2 pellets, a process combining SGMP and low temperature oxidative sintering has been developed for minimising radioactive dust hazard and energy requirement during sintering. The thermal conductivity (laser flash method) and hot hardness (using Vickers diamond indentor) of oxide, carbide and nitride fuel pellets were evaluated upto 1800 K and 1500 K respectively. The out-of-pile experiments on chemical compatibility of mixed uranium plutonium monocarbide and mononitride fuel pellets with stainless steel (type SS 316) cladding have been carried out to find their suitability as fueld for fast breeder test reactor (FBTR) and prototype fast breeder reactors (PFBR) at Indira Gandhi Centre for Atomic Research (IGCAR) at Kalpakkam. (orig.)

  15. Chemistry

    International Nuclear Information System (INIS)

    Research progress is reported in programs on fuel-salt chemistry, properties of compounds in the Li--Te system, Te spectroscopy UF4--H equilibria, porous electrode studies of molten salts, fuel salt-coolant salt reactions, thermodynamic properties of transition-metal fluorides, and properties of sodium fluoroborate. Developmental work on analytical methods is summarized including in-line analysis of molten MSBR fuel, analysis of coolant-salts for tritium, analysis of molten LiF--BeF2--ThF4 for Fe and analysis of LiF--BeF--ThF4 for Te

  16. Report on R and D activities of Health Physics Division 1984 - 1985

    International Nuclear Information System (INIS)

    A summary of the research and development programmes undertaken in Health Physics Division during the period 1984-1985 is contained in the report. The details of the various investigations are given in references listed under each abstract, most of which are published in the form of papers in symposia and journals or as BARC reports. Some of the investigations have been carried out in collaboration with other Divisions of BARC and outside organisations. A list of these leading to M.Sc./Ph.D Degrees submitted by members of the Division is given at the end. The Division has also a number of research contracts with IAEA. A summary of work carried out under these projects is included in a separate section. (author)

  17. Observation of neutrons and tritium in the early BARC cold fusion experiments

    International Nuclear Information System (INIS)

    Soon after the Fleischmann-Pons announcement of 1989, a number of groups at the Bhabha Atomic Research Centre (BARC), Mumbai independently set up experiments to confirm if nuclear products such as neutrons and tritium are generated when samples of Pd and Ti metal are loaded with deuterium, using both electrolytic as well as gas/plasma-based loading techniques. Twelve independent research groups involving about 50 scientists were engaged in this massive effort during 1989-95, before institutional support for research on this topic was withdrawn, emulating global trends. This article briefly summarizes the results obtained during those early BARC studies. (author)

  18. Research on refractory, reactive and rare metals in BARC

    International Nuclear Information System (INIS)

    -metallics for specific applications. The presentation will essentially attempt to give an account of the development of refractory, reactive and rare metals in BARC over the period of nearly fifty years. (author)

  19. The impact of nursing students' chemistry learning performance assessment in Taiwan: competitive versus non-competitive student team achievement division approaches

    Science.gov (United States)

    Wang, Kai-Ping

    2012-07-01

    Purpose: The purpose of this study was to determine the effectiveness of competitive Student Team Achievement Division (STAD), non-competitive STAD, and traditional learning on chemistry learning and learning perceptions. Sample, design and methods: By adopting the STAD approach, this study examined 144 nursing students at a five-year junior college in northern Taiwan during the first semester (totaling 18 weeks) of the 2008 academic year. Results: The findings reveal that both a heterogeneous group with external pressure (involving competitive STAD) and a friendship group with affective pressure (involving traditional learning) enhance group cohesion and assist students' meaningful learning; the heterogeneous group without extra pressure (involving non-competitive STAD), by contrast, fails because of apathy and lassitude. Moreover, learning effectiveness will obviously predominate until the learning strategy continues for a long period or at least one semester. Conclusions: This study revealed that the learning performance level of the competitive STAD group is significantly different from that of the non-competitive STAD group; and the learning performance level of the traditional group is significantly different from that of the non-competitive STAD group. Both the competitive STAD group and traditional group of medium ability students are significantly different from the non-competitive STAD group. Low-ability students from the competitive STAD group are significantly different from those of the non-competitive STAD, though no significant differences were found in learning perception. However, both a lack of friendship and a lack of ability in using algorithms may affect students' chemistry learning. Furthermore, gender imbalance, educational culture, and group emotions are factors that may influence student learning performance. Further study should focus on the use of grouping, improve responsibility in group discussion, and investigate group interaction

  20. Research and development activities of High Pressure Physics Division (October 1993 - March 1996)

    International Nuclear Information System (INIS)

    The research and development activities of the High Pressure Physics Division during the period October 1993-March 1996 are reported in the form of collection of papers presented in journals, conference proceedings and abstracts in conferences and Bhabha Atomic Research Centre (BARC) technical reports. The report is organised in two sections: (A) High Pressure Physics Division, and (B) Seismology Section. A list of staff members is enclosed at the end

  1. Chemistry

    International Nuclear Information System (INIS)

    Research and development activities dealing with the chemical problems related to design and ultimate operation of molten-salt reactor systems are described. An experimental test stand was constructed to expose metallurgical test specimens to Te2 vapor at defined temperatures and deposition rates. To better define the chemistry of fluoroborate coolant, several aspects are being investigated. The behavior of hydroxy and oxy compounds in molten NaBF4 is being investigated to define reactions and compounds that may be involved in corrosion and/or could be involved in methods for trapping tritium. Two corrosion products of Hastelloy N, Na3CrF6 and Na5Cr3F14, were identified from fluoroborate systems. The evaluation of fluoroborate and alternate coolants continued. Research on the behavior of hydrogen and its isotopes is summarized. The solubilities of hydrogen, deuterium, and helium in Li2BeF4 are very low. The sorption of tritium on graphite was found to be significant (a few milligrams of tritium per kilogram of graphite), possibly providing a means of sequestering a portion of the tritium produced. Development of analytical methods continued with emphasis on voltammetric and spectrophotometric techniques for the in-line analysis of corrosion products such as Fe2+ and Cr3+ and the determination of the U3+/U4+ ratio in MSBR fuel salt. Similar studies were conducted with the NaBF4--NaF coolant salt. Information developed during the previous operation of the CSTF has been assessed and used to formulate plans for evaluation of in-line analytical methods in future CSTF operations. Electroanalytical and spectrophotometric research suggests that an electroactive protonic species is present in molten NaBF4--NaF, and that this species rapidly equilibrates with a volatile proton-containing species. Data obtained from the CSTF indicated that tritium was concentrated in the volatile species. (JGB)

  2. Radiochemistry Division annual progress report for 1977

    International Nuclear Information System (INIS)

    The research and development work carried by the Radiochemistry Division of the Bhabha Atomic Research Centre, Bombay, during the calendar year 1977 in the areas of reactor chemistry, actinide chemistry, process chemistry of neptunium and plutonium-239, radioanalytical chemistry and nuclear chemistry has been reported. (M.G.B.)

  3. Progress report [of] Technical Physics and Prototype Engineering Division, April 1982 - March 1984

    International Nuclear Information System (INIS)

    The work done by the Technical Physics and Prototype Engineering Division of the Bhabha Atomic Research Centre (BARC) at Bombay during the period from April 1982 to March 1984 is described in the form of summaries. The main thrust of the work of the Division is towards designing, developing, fabricating and if needed, producing on a large scale various instruments, equipment and components required for the programmes of the BARC and the Department of Atomic Energy. The summaries describing the work are grouped under the headings:(1) vacuum, (2) surface analysis, (3) mass spectrometry, (4) electronics, (5) cryogenics, (6) crystals and detectors, (7) glass technology and devices, and (8) optoelectronics. A list of publications of the staff-members of the Division during the report period is given. (M.G.B.)

  4. Cold Plasma: simple tool for convenient utilitarian chemistry in homogeneous and heterogeneous environments

    International Nuclear Information System (INIS)

    Cold Plasma based experimental facilities have been commissioned (XI-XII Plan periods) in Radiation and Photochemistry Division, BARC to carry out free radical and excited state-induced chemistry in single- and mixed-phase milieu. In any reaction medium, Dielectric Barrier assisted Electric Discharge generates in situ non-equilibrium plasma constituting of electrons and photons (< 10 eV each) and chemically reactive ions, excited species and free radical transients near room temperature and pressure. Choice of reactants and nature of other added ingredient(s), type of interacting surface(s) and the dielectric characteristics, the rate and amount of electric energy dissipated within etc. control various reactions’ propensities and the natures of final products, following either routine or novel, atypical chemistry. A selection of results obtained from our laboratory highlight the development and the potential use of this technology. Constant improvements in Cold Plasma reactor types, and design, fabrication and assembly of a real-time measurement system, aiming to probe mechanistic chemistry, are also underway. (author)

  5. AERE Harwell Applied Chemistry Division unclassified progress report and bibliography for the period 1st April 1975 to 31st March 1976

    International Nuclear Information System (INIS)

    The Progress Report is under the headings: Analytical Chemistry Group, Actinide Analysis Group, Applied Electrochemistry Group, Nuclear Fuels Group, Solid State Chemistry Group, Separation Processes Group, list of unclassified publications. (U.K.)

  6. Recent trials with the experimental helium liquefier developed by BARC

    International Nuclear Information System (INIS)

    An experimental helium liquefier has been designed and fabricated by Cryo-Technology Division and installed at Bhabha Atomic Research Centre, Mumbai. The helium liquefaction process is based on a modified Collin's cycle consisting of one pre-cooler turboexpander, a pair of by-pass turboexpanders (warm and cold) and a series of 7 compact brazed plate fin high effectiveness heat exchangers. Liquid nitrogen pre-cooling facility along with another heat exchanger to recover cold of gaseous nitrogen has also been provided in the system. After the full installation of the process compressor and its integration with the helium liquefier cold box, trial runs were started. A lowest temperature of about 7.8 K was registered in a temperature sensor located downstream of the JT valve. (author)

  7. Over-expression, Rapid Preparation and Some Properties of C-terminal BARc Region in PICK1

    Directory of Open Access Journals (Sweden)

    Junhua Wang

    2008-12-01

    Full Text Available A DNA fragment encoding C-terminal BARc region (amino acids 128-416 of rat PICK1 (NP_445912 was inserted into a modified vector pMAL-s involving human rhinovirus 3C protease cleavage site to produce a recombinant plasmid, pMAL-s-barc. The construct can express the fusion protein, MBP-BARc in the soluble form in E.coli. To remove the MBP tag, MBP-BARc purified from amylose beads was digested with human rhinovirus 3C protease and the cleavage efficiency is about 95% when the ratio of protein / enzyme (w/w reaches 50:1, as analyzed on SDS-PAGE. The enzymatic reaction mixture was rapidly separated into two parts, MBP in the supernatant and BARc in the precipitate at the concentration of 1 M ammonium sulfate. In such case, the target protein BARc could be economically produced in a soluble state to be as the sample for measuring its biochemical function, for example, protein-protein interaction and protein-lipid combination.

  8. European analytical column no. 37 (January 2009) Division of Analytical Chemistry (DAC) of the European Association for Chemical and Molecular Sciences (EuCheMS)

    DEFF Research Database (Denmark)

    Karlberg, Bo; Grasserbauer, Manfred; Andersen, Jens Enevold Thaulov

    2009-01-01

    This issue of the European Analytical Column has again a somewhat different format: once more DAC invited a guest columnist to give his views on various matters related to Analytical Chemistry in Europe. This year, Professor Manfred Grasserbauer of the Vienna University of Technology focuses on...... representing a major branch of chemistry, namely analytical chemistry. The global financial crisis is affecting all branches of chemistry, especially analytical chemistry since our discipline by tradition has many close links to industry. Already now a decrease of industrial commitment with respect to new...

  9. European analytical column No. 37 from the Division of Analytical Chemistry (DAC) of the European Association for Chemical and Molecular Sciences (EuCheMS)

    DEFF Research Database (Denmark)

    Karlberg, Bo; Grasserbauer, Manfred; Andersen, Jens Enevold Thaulov

    2009-01-01

    The European Analytical Column again has a somewhat different format. We have once more invited a guest columnist to give his views on various matters related to analytical chemistry in Europe. This year we have invited Prof. Manfred Grasserbauer of Vienna University of Technology to present some...... for all those representing a major branch of chemistry, namely, analytical chemistry. The global financial crisis is affecting all branches of chemistry, but analytical chemistry in particular since our discipline by tradition has many close links to industry. We are already noticing a decreased...

  10. Water Chemistry Section: progress report (1981-82)

    International Nuclear Information System (INIS)

    The activities of the Water Chemistry Section of the Bhabha Atomic Research Centre (BARC), Bombay, during the years 1981 and 1982 are reported in the form of individual summaries. The research activities of the Section cover the following areas: (1) chemistry and thermodynamics of nuclear materials, (2) crystal structure of organo-metallic complexes using X-ray diffraction, (3) thermophysical and phase transition studies, (4) solid state chemistry and thermochemical studies, (5) water and steam chemistry of heavy water plants and phwr type reactors, and (6) uranium isotope exchange studies. A survey is also given of: (i) the Section's participation in advisory and consultancy services in nuclear and thermal power stations, (ii) training activities, and (iii) assistance in chemical analysis by various techniques to other units of BARC and outside agencies. A list of publications and lectures by the staff during the report period is included. (M.G.B.)

  11. Multi axis motor control system for BARC-TIFR LINAC scattering chamber

    International Nuclear Information System (INIS)

    A general purpose scattering chamber of 150 cm diameter and 50 cm height is recently installed at BARC-TIFR LINAC facility. Scattering chamber is used in several experiments using particle accelerators. A remote controlled system is developed to perform various operation in scattering chamber. Four servo motors with PLC interface have been used to meet the precise positioning of target and detectors in scattering chamber. User interface software has been developed in Java which interacts with the system over Ethernet

  12. Short term course on Particle Accelerator Facilities in BARC: lecture notes

    International Nuclear Information System (INIS)

    This course will focus on the working principles of different types of accelerators and the safety and regulatory aspects of the particle accelerators in BARC. We sincerely hope that the course will benefit all those involved in the design, operation, maintenance as well as regulation of the particle accelerators. The course will bring together all the stakeholders on a common platform to understand and communicate various aspects of particle accelerators. Papers relevant to INIS are indexed separately

  13. Spectroscopy Division : Progress report for Oct 1979 - Dec 1980

    International Nuclear Information System (INIS)

    An account of the activities, with an individual summary of each, of the Spectroscopy Division of the Bhabha Atomic Research Centre (BARC), Bombay, for the period from October 1979 to December 1980 is given. The activities of the Division are mainly concerned with: (1) spectrochemical analysis of nuclear fuels, reactor materials, mineral samples, environmental samples, biological samples, and other samples by methods of optical emission spectroscopy, electron spectroscopy, and X-ray fluorescence spectroscopy, (2) research and development primarily in the field of high resolution atomic and molecular spectroscopy, and (3) design and fabrication of high precision optical instruments and electronic components for other Divisions of BARC and other constituent units of the Department of Atomic Energy. During the report period, the following were fabricated: a monochromator using a concave holographic grating, a holographic grating spectrograph, a core viewing system for the Fast Breeder Test Reactor now under construction at Kalpakkam, a critical angle refractometer for heavy water analysis in the Rajasthan Atomic Power Station, electronic equipment like frequency divider amplifier, lock-in-voltmeter, analog ratio meter etc. required for laser spectroscopy. Lists of the staff members, their publications during the report period, educational and training activities of the Division are also given. Two feature articles, one dealing with beam foil spectroscopy and the other with monochromatization of synchrotron radiation, are also included. (M.G.B.)

  14. Micro-controller based fiber optic data telemetry system for the ion source of low energy accelerator facility at BARC

    International Nuclear Information System (INIS)

    The Low Energy Accelerator Facility (LEAF) is a 50 keV, high intensity, negative ion accelerator facility that has been set up indigenously at Nuclear Physics Division, BARC. This facility is capable of delivering a wide range of negative ion beams of both light and heavy ions across the periodic table using a SNICS II (Source of Negative Ion by Caesium Sputtering) source. A micro-controller based control and monitoring system has been developed exclusively for the ion source parameters of LEAF. The data control and monitoring system mainly targets acquiring the data from the field in the terms of parameters such as voltages and currents. There are processes which need to be monitored continuously in order to keep certain parameters under check. The microcontroller based fiber optic data telemetry system allows us to perform the aforesaid task. The voltages can be controlled and monitored by providing the inputs and receiving the feedback through a user friendly graphic user interface. With this system one can control the status as well as analog value of the high voltage power supplies like extractor, cathode, filament, focus line heater and oven. This system consists of Fiber optic transceiver, which is connected on serial port (RS 232C) of microcontroller as well as RS232 port of PC. The whole control system is reliable even in noisy environments including RF and worse EMI conditions. This compact modular design is implemented using low cost devices and allows easy and fast maintainability. In the paper, the details of the system are presented. (author)

  15. European analytical column No. 37 from the Division of Analytical Chemistry (DAC of the European Association for Chemical and Molecular Sciences (EuCheMS

    Directory of Open Access Journals (Sweden)

    BO KARLBERG

    2009-04-01

    Full Text Available INTRODUCTORY COMMENTS FROM THE CHAIRMAN OF DACThe European Analytical Column has again a somewhat different format. We have once more invited a guest columnist to give their views on various matters related to Analytical Chemistry in Europe. This year we have invited Professor Manfred Grasserbauer of the Vienna University of Technology to present some of the current challenges for European analytical chemistry. During the period 2002–2007 Professor Grasserbauer was Director of the Institute for Environment and Sustainability, Joint Research Centre of the European Commission, Ispra. There is no doubt that many challenges exist at the present time for all of us representing a major branch of chemistry, namely analytical chemistry.The global financial crisis is affecting all branches of chemistry but analytical chemistry in particular since our discipline by tradition has many close links to industry. We notice already now a decreased industrial commitment with respect to new research projects and sponsoring of conferences. It is therefore important that we strengthen our efforts and that we keep our presence at analytical chemistry meetings and conferences unchanged.Recent activities of DAC and details regarding the major analytical-chemistry event this year in Europe, Euroanalysis XV in Innsbruck, are also reported.

  16. Radiochemistry Division annual progress report : 1992

    International Nuclear Information System (INIS)

    The research and development activities of the Radiochemistry Division during 1992 are briefly described in the form of individual summaries grouped under the headings: 1) Nuclear Chemistry, 2) Actinide Chemistry, 3) Spectroscopy, and 4) Instrumentation. A list of publications numbering 95 by the scientific staff of the Division is also included in the report. (author). 35 figs., 56 tabs

  17. Report on R and D activities of Health Physics Division: 1988-1989

    International Nuclear Information System (INIS)

    The report summarises the different aspects of R and D programmes carried out in the Health Physics Division, BARC during 1988 and 1989. The results of various types of investigations on radiation physics, radiation dosimetry, instrumentation and techniques, environmental studies, micrometeorology etc. are presented in the form of abstracts. References to the detailed studies covered in the abstracts are also given in the appropriate sections. (author)

  18. Chemical Technology Division annual technical report 1997

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1998-06-01

    The Chemical Technology (CMT) Division is a diverse technical organization with principal emphases in environmental management and development of advanced energy sources. The Division conducts research and development in three general areas: (1) development of advanced power sources for stationary and transportation applications and for consumer electronics, (2) management of high-level and low-level nuclear wastes and hazardous wastes, and (3) electrometallurgical treatment of spent nuclear fuel. The Division also performs basic research in catalytic chemistry involving molecular energy resources, mechanisms of ion transport in lithium battery electrolytes, and the chemistry of technology-relevant materials and electrified interfaces. In addition, the Division operates the Analytical Chemistry Laboratory, which conducts research in analytical chemistry and provides analytical services for programs at Argonne National Laboratory (ANL) and other organizations. Technical highlights of the Division`s activities during 1997 are presented.

  19. European analytical column No. 37 from the Division of Analytical Chemistry (DAC) of the European Association for Chemical and Molecular Sciences (EuCheMS)

    OpenAIRE

    BO KARLBERG; MANFRED GRASSERBAUER; JENS E. T. ANDERSEN

    2009-01-01

    INTRODUCTORY COMMENTS FROM THE CHAIRMAN OF DACThe European Analytical Column has again a somewhat different format. We have once more invited a guest columnist to give their views on various matters related to Analytical Chemistry in Europe. This year we have invited Professor Manfred Grasserbauer of the Vienna University of Technology to present some of the current challenges for European analytical chemistry. During the period 2002–2007 Professor Grasserbauer was Director of the Institute f...

  20. Evaluation of thermophysical and thermomechanical properties of aluminium matrix dispersion fuels at BARC

    International Nuclear Information System (INIS)

    Al-U alloy and Al-UAIx, Al-U3O8 and Al-U3Si2 composites are being extensively used all over the world as fuel for small, water-cooled, non-power research reactors. As part of 40 kWt KAMINI and 5 MWt and 10 MWt research reactor fuels development programme at Bhabha Atomic Research Centre (BARC), Bombay, out-of-pile properties of these fuels, namely, hot hardness, high temperature microstructure and thermal conductivity were evaluated in the temperature range of 300-900K. (author)

  1. Investigating Quantum Mechanical Tunneling at the Nanoscale via Analogy: Development and Assessment of a Teaching Tool for Upper-Division Chemistry

    Science.gov (United States)

    Muniz, Marc N.; Oliver-Hoyo, Maria T.

    2014-01-01

    We report a novel educational activity designed to teach quantum mechanical tunneling to upper-division undergraduate students in the context of nanochemistry. The activity is based on a theoretical framework for analogy and is split into three parts that are linked pedagogically through the framework: classical ball-and-ramp system, tunneling…

  2. Radiochemistry Division annual progress report : 1991

    International Nuclear Information System (INIS)

    The research and development activities of the Radiochemistry Division during 1991 are briefly described under the headings: (i) Nuclear chemistry, (ii) Actinide chemistry, and (iii) Spectroscopy. In the field of nuclear chemistry, the main emphasis has been on the studies of fission process induced by reactor neutrons and light and heavy ions on actinides and low Z (Zc superconductors. A list of publications by the scientific staff of the Division is given at the end. (author). 31 figs., 49 tabs

  3. Radiochemistry Division annual progress report 1989

    International Nuclear Information System (INIS)

    The research and development activities of the Division during 1989 are briefly described in the form of individual summaries arranged under the headings: (1)Nuclear chemistry, (2)Actinide chemistry, and (3)Spectroscopy. In the field of nuclear chemistry, main emphasis is on studies in fission chemistry. R and D work in actinide chemistry area is oriented towards study of solvent extraction behaviour of actinide ions from aqueous solutions. The spectroscpoic studies are mainly concerned with EPR investigations. A list of publications by the scientist of the division is given at the end. (author). 22 figs., 39 tabs

  4. Proceedings of the national symposium on BARC technologies for development of rural India

    International Nuclear Information System (INIS)

    For empowering Indian villages, science and technology (S and T) based eco-friendly work plan have to be evolved. Sustainable techno-economic growth of rural sector in a country of vast size such as India requires technology innovations and their ingenious adaptation. This can be achieved to a great extent by adopting such technologies for varied local conditions so that it can be applied quickly to enhance the quality of life of larger population. Considering the wealth of technology and innovative capability generated in BARC, as an off-shoot of R and D in nuclear energy and its applications in power and non-power areas, Department of Atomic Energy (DAE), India has launched - Societal Initiative for utilization of Non-Power Applications (NPAs) and Spin off technologies (Spin-offs) in the area of water, land, agriculture, food processing and urban-rural waste management. Within this framework of societal initiative, structured programme called 'AKRUTI - KRUTIK - FORCE' has been formulated and is being implemented by BARC for techno-economic growth of the rural sector, as one of the many schemes for large-scale deployment of NPAs and spin-offs. This symposium consisting of invited lectures and poster presentations covered the topics like food and agriculture, health and environment, energy and conservation. Papers relevant to INIS are indexed separately

  5. Indigenous development and performance evaluation of BARC aerodynamic size separator (BASS)

    CERN Document Server

    Singh, S; Khan, A; Mayya, Y S; Narayanan, K P; Purwar, R C; Sapra, B K; Sunny, F

    2002-01-01

    Commercially available cascade impactors, commonly used for aerodynamic size separation of aerosol particles, are based on the principle of inertial impaction. As of now, these instruments are imported at a cost of several lakhs of rupees; hence an effort has been made to develop an aerodynamic particle sizer indigenously in BARC. This unit, referred to as BARC Aerodynamic Size Separator (BASS), separates aerosols into seven size classes ranging from 0.53 mu m to 10 mu m and operates at a flow rate of 45 Ipm. Intercomparison studies between the standard Andersen Mark-II (Grasbey Andersen Inc.) impactor and BASS using nebulizer generated aerosols have consistently shown excellent performance by BASS in all respects. In particular, BASS yielded the parameters of polydisperse aerosols quite accurately. Experiments to evaluate the individual stage cut-off diameters show that these are within 8% of their designed value for all stages except the higher two stages which indicate about 30% lower values than the desig...

  6. Variation of outdoor radon levels and gamma radiation with respect to meteorological parameter at BARC, Vizag

    International Nuclear Information System (INIS)

    Hourly outdoor radon concentration along with meteorological parameters were measured at eight locations in and around BARC, Vizag using radon monitoring system (Alpha Guard, Genitron make). The geometric means of outdoor radon levels were found to be in the range of 4-22 Bqm-3. The diurnal variation of outdoor radon concentration observed at each location indicates a possible dependence on the meteorological parameters. A build up of 2-16 fold is observed in early morning hours in outdoor radon concentration. The radon concentration is found to increase with increase in relative humidity. The radon concentration was also found to be inversely related to the atmospheric temperature with minimum radon concentration during afternoon hours, when the temperature was maximum. Similarly maximum radon concentration was observed in the early morning hours, when the temperature was minimum. Gamma radiation levels were also measured at eight locations in and around BARC, Vizag. The arithmetic means of gamma radiation observed in these locations were found to vary from 139-266 nGyh-1. The gamma radiation levels observed these locations were found to be independent of temperature and humidity for the measurement period of this study. (author)

  7. Fabrication experience of aluminium clad aluminium matrix dispersion fuels at BARC

    International Nuclear Information System (INIS)

    Aluminium clad, aluminium matrix plate type dispersion fuels have been fabricated in BARC in recent years as part of fuel development programme for small non-power research reactors. The present paper describes the flowsheet developed for fabrication of Al-UAlx, Al-U3Si2 and Al-U3O8 fuels at BARC. The Al-20% U alloy fuel for KAMINI neutron radiography reactor was prepared by 'melting and casting' route, followed by picture framing and roll-bonding. For higher 'U' density fuels namely, Al-UAlx, Al-U3O8 and Al-U3Si2 the 'powder metallurgy' route was followed for preparation of fuel meat. The novel features in fabrication route were: addition of Zr for stabilizing UAl3 phase in Al-20% U alloy; x-ray radiography and microdensitometric scanning of radiographs for location of fuel outline inside fuel element and for confirming homogeneous distribution of fissile atoms; immersion ultrasonic testing for confirming good bonding between mating Al surface of the fuel plate. (author)

  8. Chemical Technology Division annual technical report 1997

    International Nuclear Information System (INIS)

    The Chemical Technology (CMT) Division is a diverse technical organization with principal emphases in environmental management and development of advanced energy sources. The Division conducts research and development in three general areas: (1) development of advanced power sources for stationary and transportation applications and for consumer electronics, (2) management of high-level and low-level nuclear wastes and hazardous wastes, and (3) electrometallurgical treatment of spent nuclear fuel. The Division also performs basic research in catalytic chemistry involving molecular energy resources, mechanisms of ion transport in lithium battery electrolytes, and the chemistry of technology-relevant materials and electrified interfaces. In addition, the Division operates the Analytical Chemistry Laboratory, which conducts research in analytical chemistry and provides analytical services for programs at Argonne National Laboratory (ANL) and other organizations. Technical highlights of the Division's activities during 1997 are presented

  9. 1998 Chemical Technology Division Annual Technical Report.

    Energy Technology Data Exchange (ETDEWEB)

    Ackerman, J.P.; Einziger, R.E.; Gay, E.C.; Green, D.W.; Miller, J.F.

    1999-08-06

    The Chemical Technology (CMT) Division is a diverse technical organization with principal emphases in environmental management and development of advanced energy sources. The Division conducts research and development in three general areas: (1) development of advanced power sources for stationary and transportation applications and for consumer electronics, (2) management of high-level and low-level nuclear wastes and hazardous wastes, and (3) electrometallurgical treatment of spent nuclear fuel. The Division also performs basic research in catalytic chemistry involving molecular energy resources, mechanisms of ion transport in lithium battery electrolytes, and the chemistry of technology-relevant materials. In addition, the Division operates the Analytical Chemistry Laboratory, which conducts research in analytical chemistry and provides analytical services for programs at Argonne National Laboratory (ANL) and other organizations. Technical highlights of the Division's activities during 1998 are presented.

  10. Radiological and Environmental Research Division annual report: Fundamental Molecular Physics and Chemistry, October 1977-September 1978. [Summary of research activities at Argonne National Laboratory

    Energy Technology Data Exchange (ETDEWEB)

    Rowland, R. E.; Inokuti, Mitio [eds.

    1978-01-01

    Research presented includes 32 papers, six of which have appeared previously in ERA, and 26 appear in this issue of ERA. Molecular physics and chemistry including photoionization, molecular properties, oscillator strengths, scattering, shape resonances, and photoelectrons are covered. A list of publications is included. (JFP)

  11. Radiological and Environmental Research Division annual report. Fundamental molecular physics and chemistry, June 1975--September 1976. [Summaries of research activities at Argonne National Laboratory

    Energy Technology Data Exchange (ETDEWEB)

    None

    1976-01-01

    A summary of research activities in the fundamental molecular physics and chemistry section at Argonne National Laboratory from July 1975 to September 1976 is presented. Of the 40 articles and abstracts given, 24 have been presented at conferences or have been published and will be separately abstracted. Abstracts of the remaining 16 items appear in this issue of ERA. (JFP)

  12. Using Raman Spectroscopy and Surface-Enhanced Raman Scattering to Identify Colorants in Art: An Experiment for an Upper-Division Chemistry Laboratory

    Science.gov (United States)

    Mayhew, Hannah E.; Frano, Kristen A.; Svoboda, Shelley A.; Wustholz, Kristin L.

    2015-01-01

    Surface-enhanced Raman scattering (SERS) studies of art represent an attractive way to introduce undergraduate students to concepts in nanoscience, vibrational spectroscopy, and instrumental analysis. Here, we present an undergraduate analytical or physical chemistry laboratory wherein a combination of normal Raman and SERS spectroscopy is used to…

  13. Report on R and D activities of Health Physics Division 1994-1995

    International Nuclear Information System (INIS)

    This report is a compilation of the activities and also of the results of various R and D programmes of the Health Physics Division of Bhabha Atomic Research Centre (BARC) during the period 1994-1995. The topics covered are: environmental studies, radiation dosimetry- internal and external, operational health physics and nuclear safety, instruments and techniques, radiation physics, mathematical modelling and software development, micrometeorology and industrial hygiene. The matter is presented in the form of abstracts with the publication details. Also included are extracts from IAEA research agreements and the summary of theses submitted by the staff members of the Division during the above period

  14. Status report on LEHIPA beam trial through 2 segments of RFQ at BARC

    International Nuclear Information System (INIS)

    A 20 MeV, 30 mA, Low Energy High Intensity Protons Accelerator (LEHIPA) is under installation and commissioning at BARC. The 50 keV proton beam from Electron Cyclotron Resonance (ECR) source has been transported through Low Energy Beam Transport (LEBT) system and accelerated through 2 segments of Radio Frequency Quadrupole (RFQ) to 1.2 MeV. Installation of Sub Systems like Vacuum System, RHVPS, High Power RF system, LLRF system, Control and Instrumentation and safety interlock is completed. Two more segments of RFQ are expected very soon. This talk will cover report of progress made on all sub systems and results of beam trial will be presented. (author)

  15. Design of a new controller for vacuum interlock system at BARC-TIFR Pelletron Accelerator Facility

    International Nuclear Information System (INIS)

    The BARC-TIFR Pelletron Accelerator Facility has been operational for last twenty two years with progressively increased efficiency. The entire beam transport line is maintained under ultra high vacuum (UHV), Turbo Pumps, Getter and Ion Pumps are being used to maintain UHV in beam transport line. Safety of the pumps is ensured by interlocking operation of gate valves with the safe vacuum level. A new type of controller has been designed using CMOS ICs' for vacuum interlock system. Three pneumatically controlled UHV gate valves can be operated from this unit. This unit is interfaced with a multi cold cathode controller (Pfeiffer make) unit and accordingly generates signal to operate three gate valves. This paper presents the design features of the controller and its utilization. (author)

  16. Analytical chemistry

    International Nuclear Information System (INIS)

    The division for Analytical Chemistry continued to try and develope an accurate method for the separation of trace amounts from mixtures which, contain various other elements. Ion exchange chromatography is of special importance in this regard. New separation techniques were tried on certain trace amounts in South African standard rock materials and special ceramics. Methods were also tested for the separation of carrier-free radioisotopes from irradiated cyclotron discs

  17. Proceedings of the national symposium on BARC technologies for development of rural India

    International Nuclear Information System (INIS)

    Empowering villages with Science and Technology (S and T) based on eco-friendly work plan for sustainable Techno-Economic growth of rural sector in a country of vast size, technology innovations and adaptations have to be evolved. This can be achieved to a great measure particularly since such technology will fit with varied local conditions and can be applied quickly to enhance the quality of life of larger population. Considering the wealth of technology and innovative capability generated in BARC, as an off-shoot of R and D in Nuclear Energy and its applications in power and non-power areas, Department of Atomic Energy (DAE) has launched - Societal Initiative for utilization of Non-Power Applications (NPAs) and Spinoff technologies (Spinoffs) in the area of water, land, agriculture, food processing and urban-rural waste management. Within this framework of societal initiative, structured programme called 'AKRUTI - KRUTIK - FORCE' has been formulated and is being implemented by BARC for techno-economic growth of the rural sector, as one of the many schemes for large-scale deployment of NPAs and spinoffs. Bhabha Atomic Research Centre Officer's Association (BARCOA) is making a maiden attempt to hold a symposium where the scientists, technologists, agriculturists and the consumers will come on a common platform to discuss these issues. This symposium is organized to enable to take the fruits of technology to grass-root level to every villager in the remote corner and provide inclusive growth to the rural sector and tap the hidden innovative capability of large rural India. This symposium describes the various technologies developed indigenously by Bhabha Atomic Research Centre for the development of rural India. Papers relevant to INIS are indexed separately

  18. Indigenous development and performance evaluation of BARC aerodynamic size separator (BASS)

    International Nuclear Information System (INIS)

    Commercially available cascade impactors, commonly used for aerodynamic size separation of aerosol particles, are based on the principle of inertial impaction. As of now, these instruments are imported at a cost of several lakhs of rupees; hence an effort has been made to develop an aerodynamic particle sizer indigenously in BARC. This unit, referred to as BARC Aerodynamic Size Separator (BASS), separates aerosols into seven size classes ranging from 0.53 μm to 10 μm and operates at a flow rate of 45 Ipm. Intercomparison studies between the standard Andersen Mark-II (Grasbey Andersen Inc.) impactor and BASS using nebulizer generated aerosols have consistently shown excellent performance by BASS in all respects. In particular, BASS yielded the parameters of polydisperse aerosols quite accurately. Experiments to evaluate the individual stage cut-off diameters show that these are within 8% of their designed value for all stages except the higher two stages which indicate about 30% lower values than the designed ones. The replotting of all the mass distribution data using the experimental cut-off diameters showed perfect lognormal fits, thereby indicating that these diameters are closer to the true stage cut-off diameters for BASS. The studies show that BASS will be suitable for determining the particle size distributions in the context of the radiological safety programmes of DAE. Being indigenous in design, it may be fabricated on a commercial scale at a cost far less than that of the imported units. Such a venture will greatly help several national programmes on atmospheric pollution being carried out by many laboratories and institutions across the country. (author)

  19. Chemical Sciences Division: Annual report 1992

    International Nuclear Information System (INIS)

    The Chemical Sciences Division (CSD) is one of twelve research Divisions of the Lawrence Berkeley Laboratory, a Department of Energy National Laboratory. The CSD is composed of individual groups and research programs that are organized into five scientific areas: Chemical Physics, Inorganic/Organometallic Chemistry, Actinide Chemistry, Atomic Physics, and Physical Chemistry. This report describes progress by the CSD for 1992. Also included are remarks by the Division Director, a description of work for others (United States Office of Naval Research), and appendices of the Division personnel and an index of investigators. Research reports are grouped as Fundamental Interactions (Photochemical and Radiation Sciences, Chemical Physics, Atomic Physics) or Processes and Techniques (Chemical Energy, Heavy-Element Chemistry, and Chemical Engineering Sciences)

  20. Chemical Sciences Division: Annual report 1992

    Energy Technology Data Exchange (ETDEWEB)

    1993-10-01

    The Chemical Sciences Division (CSD) is one of twelve research Divisions of the Lawrence Berkeley Laboratory, a Department of Energy National Laboratory. The CSD is composed of individual groups and research programs that are organized into five scientific areas: Chemical Physics, Inorganic/Organometallic Chemistry, Actinide Chemistry, Atomic Physics, and Physical Chemistry. This report describes progress by the CSD for 1992. Also included are remarks by the Division Director, a description of work for others (United States Office of Naval Research), and appendices of the Division personnel and an index of investigators. Research reports are grouped as Fundamental Interactions (Photochemical and Radiation Sciences, Chemical Physics, Atomic Physics) or Processes and Techniques (Chemical Energy, Heavy-Element Chemistry, and Chemical Engineering Sciences).

  1. Materials Sciences Division 1990 annual report

    Energy Technology Data Exchange (ETDEWEB)

    1990-12-31

    This report is the Materials Sciences Division`s annual report. It contains abstracts describing materials research at the National Center for Electron Microscopy, and for research groups in metallurgy, solid-state physics, materials chemistry, electrochemical energy storage, electronic materials, surface science and catalysis, ceramic science, high tc superconductivity, polymers, composites, and high performance metals.

  2. Meteorological analysis of very severe cyclonic storm Hudhud in and around BARC-Visakhapatnam in October 2014

    International Nuclear Information System (INIS)

    Meteorological features of 'Hudhud' for the active period October 11-13, 2014 monitored at BARC, Visakhapatnam site have been analyzed. Response from observatories and behavior of the rare event of a cyclone which crossed through Visakhapatnam is presented and discussed for information and record. This will be a useful input in planning and designing the safety features in the developmental activities proposed at this site. (author)

  3. Spectroscopy Division: progress report for 1990

    International Nuclear Information System (INIS)

    This report summarises the work done by members of the Spectroscopy Division both within BARC as well as in scientific institutions elsewhere during the calendar year 1990. Main areas of research activity include atomic spectroscopy for hyperfine structure and isotope shift determination, theoretical and experimental studies of diatomic molecules, infrared and Raman spectroscopy of polyatomic molecules, design and fabrication of beam line optics for INDUS-I synchrotron radiation source, beam foil spectroscopy and laser spectroscopy of various atomic and molecular systems. Major experimental facilities that have been utilised include a fourier transform spectrometer, an excimer laser pumped dye-laser and a continous wave argon-ion laser. The report also includes the spectroscopic analytical service rendered for various DAE units and describes briefly some new analytical facilities like laser enhanced ionization in flames and resonance ionization mass spectroscopy using pulsed lasers which are being set up. The above activites were reported by members of the Spectroscopy Division via invited lectures, papers presented in various national and international conferences and publication in scientific journals. Details of these are given at the end of the report. (author). figs., tabs

  4. Chemical Sciences Division annual report 1994

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1995-06-01

    The division is one of ten LBL research divisions. It is composed of individual research groups organized into 5 scientific areas: chemical physics, inorganic/organometallic chemistry, actinide chemistry, atomic physics, and chemical engineering. Studies include structure and reactivity of critical reaction intermediates, transients and dynamics of elementary chemical reactions, and heterogeneous and homogeneous catalysis. Work for others included studies of superconducting properties of high-{Tc} oxides. In FY 1994, the division neared completion of two end-stations and a beamline for the Advanced Light Source, which will be used for combustion and other studies. This document presents summaries of the studies.

  5. Distributed vacuum system for 20 MeV, 30 mA LEHIPA project at BARC

    International Nuclear Information System (INIS)

    The 20 MeV, 30 mA LEHIPA Project is at advance stage of commissioning at BARC, where high intensity proton beam will traverse about 30 meter through the LINAC accelerating structure, associated beam diagnostic and focusing elements. An average vacuum of the order of 10-7-10-8 Torr will be maintained for high beam transmission and minimum beam energy spreads. This is essential to minimize scattering of accelerated beam particles by the molecules of residual gases. The scattered particles result in loss of beam current, heating of structural surfaces, and at higher energies it causes activation of accelerator parts due to reactions. Except for the initial path of protons (H+ ions) near the ECR ion source where the plasma is formed inside the chamber at about 10-3 Torr hydrogen gas pressure, the vacuum system should meet the above requirement throughout the accelerator length. The vacuum system is divided in four sections where gas load and average vacuum levels are different based on the gas load. (author)

  6. Setup for thin layer activation at BARC-TIFR Pelletron Accelerator Facility

    International Nuclear Information System (INIS)

    Layout of drift space above analysing magnet of BARC-TIFR Pelletron accelerator facility was modified in year 2003 to accommodate an irradiation setup in tower area known as 6M irradiation setup. Proton beam of a few MeV energy having current in range of hundreds of nA can be obtained at this port to carry out specific experiments. Irradiation setup was modified to mount metal samples of different shape and sizes to study wear and corrosion rates using thin layer activation analysis technique. Special jigs were fabricated to irradiate samples i.e. disc gears, balls and rectangular shape coupons. The samples were irradiated by a proton beam of 13 MeV energy having 200 nA beam current. The irradiation resulted in production of a gamma emitting radionuclide Cobalt-56 (half- life:77.3 d, Energy: 847 KeV, 1.24 MeV) by the nuclear reaction 56Fe (p, n) 56Co. The irradiated samples were subjected to wear/corrosion environment under certain experimental conditions and activity loss was monitored periodically using gamma spectrometer. The reduced activity was correlated with thickness loss by generating a calibration curve. Details of setup and activation results will be presented in paper. (author)

  7. Chemical Technology Division annual technical report, 1996

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1997-06-01

    CMT is a diverse technical organization with principal emphases in environmental management and development of advanced energy sources. It conducts R&D in 3 general areas: development of advanced power sources for stationary and transportation applications and for consumer electronics, management of high-level and low-level nuclear wastes and hazardous wastes, and electrometallurgical treatment of spent nuclear fuel. The Division also performs basic research in catalytic chemistry involving molecular energy resources, mechanisms of ion transport in lithium battery electrolytes, materials chemistry of electrified interfaces and molecular sieves, and the theory of materials properties. It also operates the Analytical Chemistry Laboratory, which conducts research in analytical chemistry and provides analytical services for programs at ANL and other organizations. Technical highlights of the Division`s activities during 1996 are presented.

  8. Comparison of aerosol inhalation lung images using BARC and other nebulizers

    International Nuclear Information System (INIS)

    Various factors determine the site of inhaled aerosol deposition in the lungs. They are the size of aerosol the composition of carrier gas of the aerosol, the airflow rate, physico-chemical properties of the carrier gas or the aerosol, the shape and structure of the airways, and the body position during inhalation. Aerosol inhalation lung images were obtained in the same subjects using 99mTc-human serum albumin aerosol generated by 3 different aerosol generators each producing different-sized aerosol and 2 or 3 days apart from each study. The size of aerosol produced by an ultrasonic nebulizer (Mistogen) was 1.93 Micron in activity median aerodynamic diameter (AMAD) with its geometric standard deviation (σg) of 1.73, that by a jet nebulizer (Ultra Vent) was 1.04 micron in AMAD with its σg of 1.71, and that by our BARC nebulizer, a type of a jet nebulizer, was 0.84 micron in AMAD with its σg of 1.73. In addition Technegas was also applied to selected patients. The latter produced aerosol of less than 0.2 micron in size at the largest and the majority, say, 95% or more of the generated aerosol was less than 0.1 micron in size by electron Microscopy. Each subject inhaled aerosol in resting tidal breathing through a mouth-piece with a one way double J valve with the nose clipped in the sitting position. After inhaling approximately 2-3 mCi (74 to 111 MBq) in the thorax, four view lung images were taken: anterior, posterior, and right and left laterals. 300 K counts per view were collected. They were not only pictured on polaroid films as analogue data but also recorded and stored in a computer as digital data. In case of Technegas breathing it for the RV (residual volume) to the TLC (total lung capacity) level followed by breath-holding for 5 to 10 sec in duration was repeated 2 to 3 times as a breathing maneuver instead of tidal breathing. Otherwise deposition efficiency of Technegas is very little because of the small size of the Technegas. Representative 10 cases

  9. High voltage technologies for radio frequency (RF) systems of proton accelerators in BARC

    International Nuclear Information System (INIS)

    Accelerators were invented to provide energetic particles to investigate the structure of the atomic nucleus. They speed up and increase the energy of a beam of particles by generating electric fields that accelerate the particles and magnetic fields that steer and focus them. An RF accelerator uses electromagnetic fields to propel charged particles to high speeds and to contain them in well-defined beams. The RF power amplifier, which provides electromagnetic fields, converts direct current (D.C.) input power into r.f. output power. The accelerating structures use this r.f. power to accelerate low-charge bunches to high energies. An important program of Department of Atomic Energy is to build accelerator driven sub critical reactor system (ADS). In ADS, high energy proton beam (from the CW particle accelerator, 1 GeV, > 20 mA) strikes a heavy element target which yields copious neutrons by (p, xn) spallation reaction inside a sub-critical core. One of the critical components of ADS is a 1 GeV, high current proton accelerator. It is being built in three phases. In the first phase, a 20 MeV, 30 mA, low energy high intensity proton accelerator (LEHIPA) is under construction at BARC. It requires radio frequency (RF) power for beam acceleration and is provided by high power RF systems. The RF systems require and use high voltage DC technologies (at 100 kV and 65 kV) as their subsystems that are developed with the help of local Indian industries. These technologies are making use of innovative techniques, new insulating materials and new technologies to avoid the critical problems (associated with high voltages) like arcing, sparking, energy deposition under arcing etc. This poster will describe in detail these high voltage technologies developed with the help of local Indian industries. (author)

  10. Modification in existing SF6 gas handling system at 14UD BARC-TIFR Pelletron Accelerator, Mumbai

    International Nuclear Information System (INIS)

    BARC-TIFR 14 UD Pelletron Accelerator facility at TIFR, Mumbai is operational since inception 1989. The accelerator is housed inside a pressure vessel of 6 metre diameter, 25 metre long and 525m3 volume. The accelerator tank is pressurized with SF6 at 80 to 100 psig in order to achieve 14MV. The inventory of SF6 gas is about 18,000 Kg (approximately) at 80 psig. SF6 gas can be transported from Accelerator tank to storage tank using gas handling system, which consists of oil free compressor, vacuum pump, dust filters, oil filters, dryers etc

  11. Progress report, Chemistry and Materials Division

    International Nuclear Information System (INIS)

    New results have been obtained by time-of-flight studies for the stopping powers for heavy ions (Ne,Ar) transmitted at O0 through tin, copper and gold foils. It has been shown that complexes formed between vacancies and solute ions can be dissolved by MeV He+ ion irradiation at 70 K. An improved optical absorption spectrum of hypoiodite ion has been obtained. Studies of the radiolysis of gadolinium solutions covered with a vapour space are continuing. Research on hydrogen isotope separation by laser photochemistry and catalytic chemical exchange is going forward. A method for the determination of trace quantities of hexavalent uranium in groundwater and urine has been found. Preliminary experiments have been carried out on zone refining and electrotransport purification of zirconium. Irradiation creep and growth are bieng examined, and an experimental study of recovery in Zircaloy-2 from mechanical deformation has been completed. (LL)

  12. Progress report, Chemistry and Materials Division

    International Nuclear Information System (INIS)

    Laser radiation has been used to anneal damage created by implantation of arsenic ions into silicon single-crystal wafers. The threshold for recovery of lattice order, as measured by ion channeling methods, appeared at an energy density of 1.2 J.cm-2. Deuterium-enriched water has been recovered for the first time in visible amounts from a process based on laser photolysis. High performance liquid chromatography has been applied to the determination of U(VI) in ground water and urine. Results with low ground water concentrations were judged to be successful, while only limited success was achieved with urine. The first analyses in support of the production of (Th,Pu)O2 fuel elements were completed successfully. Experiments performed during the quarter have shown that cracking of Zr-2.5 percent Nb alloy by gaseous hydrogen is inhibited by traces of oxygen. It was found that there was no inhibition by helium in the absence of trace oxygen. Excellent agreement has been obtained between the growth and creep constants derived from ion-irradiated cantilever beam specimens and those from reactor irradiation of the same materials. (O.T.)

  13. Electron beam accelerator at BARC-BRIT complex - electron beam processing of materials and industrial utilization

    International Nuclear Information System (INIS)

    During the last decade, the 2MeV/20kW electron beam (EB) accelerator located at BARC-BRIT complex, Vashi has been successfully utilised for non-thermal applications to develop speciality products useful for the industry. Polymer materials are exposed to high energy electrons to induce crosslinking and degradation reactions in a number of industrial products without the use of external chemicals and additives. Various EB crosslinked products viz. PE O-rings, automotive components, automobile tyres, electrical insulations, etc have been found to be much superior in quality compared to those produced conventionally. A process has been developed to enhance colours in the polished diamonds and gem stones using EB irradiation at the facility which has attracted much attention in the Indian diamond industry as a value-addition process. Recycling of polymer waste processed under EB to produce microfine PTFE powder, to reuse in automobile industry etc. has shown good potential for the industrial use. The process feasibility both in terms of economics and technology have been amply demonstrated on a technological scale by installing special conveyors at our facility for irradiating various industrial products. Around 100 km cable insulations, 1.5 million PE O-rings and more than 40000 carats of polished diamonds have been processed in our facility over a period of time on commercial scale. Encouraged with the results, Indian private entrepreneurs have set up dedicated EB machines in some of the most significant industries producing wire and cables, electrical gadgets based on polymer composites, automobile tyres and diamonds. The products are unique in properties and are in some cases, became import substitutes. The industry is now fully geared up to adapt the technology by realising the advantages viz ease in adaptability, convenient, safe and environmental-friendly nature. Encouraged by the process demonstrations, while five EB accelerators were setup and are in operation

  14. PERSONNEL DIVISION BECOMES HUMAN RESOURCES DIVISION

    CERN Multimedia

    Division des ressources humaines

    2000-01-01

    In the years to come, CERN faces big challenges in the planning and use of human resources. At this moment, Personnel (PE) Division is being reorganised to prepare for new tasks and priorities. In order to accentuate the purposes of the operation, the name of the division has been changed into Human Resources (HR) Division, with effect from 1st January 2000. Human Resources DivisionTel.73222

  15. Development of Radiopharmaceuticals Based on 188Re and 90Y for Radionuclide Therapy at BARC. Chapter 6

    International Nuclear Information System (INIS)

    During the last decade, the group at Bhabha Atomic Research Centre (BARC), India, has focused attention on the development of 90Y based radiopharmaceuticals for therapy. Because the 90Sr/90Y generator is the primary source of high specific activity 90Y, local availability of the generator is crucial in the successful development of 90Y radiopharmaceuticals. In this context, 90Sr/90Y generators based on SLM and electrochemical techniques were designed and deployed at BARC for the elution of 90Y to be used for preparation of 90Y labelled products. This work formed a part of the IAEA CRP entitled Development of Generator Technologies for Therapeutic Radionuclides: 90Y and 188Re. In this chapter, work on the development of 90Y labelled products for treatment of NHL and liver cancer is reported. In addition, validation of the EPC technique for determination of 90Sr contamination in 90Y eluates and its comparison with the United States Pharmacopeia recommended method is presented. (author)

  16. Radiochemistry Division annual progress report for 1982

    International Nuclear Information System (INIS)

    The progress report of the Radiochemistry Division of the Bhabha Atomic Research Centre, Bombay, presents the research and development work carried out during 1982 in the form of individual summaries arranged under the headings: reactor fuel chemistry, heavy element chemistry, radioanalytical chemistry, and nuclear chemistry. Some of the highlights of the R and D activities are: (1) optimisation of the chemical parameters for the preparation of UO2 microspheres by internal gelation method, (2) synergetic extraction studies of various actinides from aqueous solutions, (3) development of methods of determination of uranium, 241Am and 239Pu, (4) fission studies of 232Th, 236U, 252Cf and 229Th, (5) determination of half-life of 241Pu by various methods. A list of publications of the members of the Division published during 1982 is also given. (M.G.B.)

  17. Radiochemistry Division annual progress report : 1990

    International Nuclear Information System (INIS)

    This progress report provides an account of the research and development activities of the Radiochemistry Division during the year 1990 in the areas of nuclear chemistry, actinide chemistry and spectroscopy. The main area of work in nuclear chemistry is centered around the fission process induced by reactor neutrons, and light and heavy ions on actinides and low Z (Z<80) elements. Actinide chemistry research is concerned mostly with extraction, complexation and separation of actinide ions from aqueous media using a variety of organic reagents under different experimental conditions. Spectroscopic studies include development and optimisation of chemical/analytical methods for separation and determination of trace metallic impurities and rare earths in fuel materials and EPR and microwave studies on several compounds to understand their superconducting, structural and magnetic properties. A list of publications by the scientific staff of the Division during 1990 is also given in the report. (author). 45 figs., 44 tabs

  18. Chemical Technology Division annual technical report, 1996

    International Nuclear Information System (INIS)

    CMT is a diverse technical organization with principal emphases in environmental management and development of advanced energy sources. It conducts R ampersand D in 3 general areas: development of advanced power sources for stationary and transportation applications and for consumer electronics, management of high-level and low-level nuclear wastes and hazardous wastes, and electrometallurgical treatment of spent nuclear fuel. The Division also performs basic research in catalytic chemistry involving molecular energy resources, mechanisms of ion transport in lithium battery electrolytes, materials chemistry of electrified interfaces and molecular sieves, and the theory of materials properties. It also operates the Analytical Chemistry Laboratory, which conducts research in analytical chemistry and provides analytical services for programs at ANL and other organizations. Technical highlights of the Division's activities during 1996 are presented

  19. BARC-35: A 35 group cross-section library with P3-anisotropic scattering matrices and resonance self-shielding factors

    International Nuclear Information System (INIS)

    A 35 group cross-section set with P3-anisotropic scattering matrices and resonance self-shielding factors has been generated from the basic ENDF/B-IV cross-section Library for 57 reactor elements. This library, called BARC35, is considered to be well suited for the neutronics and safety analysis of fission, fusion and hybrid systems. (author)

  20. BARC 2006 station report for NC-1004 national project on Genetic and Functional Genomic Approaches to Improve Production and Quality of Pork

    Science.gov (United States)

    The NC-1004 national project assesses “Genetic and Functional Genomic Approaches to Improve Production and Quality of Pork.” This final NC-1004 station report summarizes the BARC lab’s recent research progress on the second objective: Discover genetic mechanisms controlling animal health in pork pro...

  1. Chemistry in the front end and back end of thorium fuel cycle

    International Nuclear Information System (INIS)

    Microsphere impregnation technique has been developed for fabrication of Thoria based fuels in Fuel Chemistry Division. The process optimization was carried out to get homogeneous distribution of uranium in thoria. A simple and fast method for the dissolution of sintered ThO2 and (UxTh1-x)O2 (sintered at 1600-1700°C and with approx. 94% of the theoretical density) and separation of thorium and uranium from the solution was developed by reacting the oxides with ammonium nitrate at 360°C. Analytical method was developed for determination of relative amounts of U and Th in MOX by using TXRF method. Extensive studies on phase diagram and thermophysical properties of thoria based fuels were carried out in a wide composition and temperature range. For reprocessing studies, a large number of amides (12 nos.) was evaluated for their extraction behavior with respect to U/Th separation and it was concluded that branched alkyl chain amide, di-2-ethylhexyl isobutyramide (D2EHIBA), is a promising candidate for the selective separation of 233U from irradiated Th. Thermal and thermodynamic stability of Phosphate based inert matrix was also studied for its application for waste immobilization of thoria based fuels. With respect to molten salt reactor system, thermal behavior, thermodynamic properties and phase diagrams of Th-F, U-F, Th-U-F, Th-O-F systems were investigated. A high temperature and hydroflourination facility has been set up for preparation and purification of thorium based fluoride salts. This lecture will address some of the developments in the above field of research carried out in Radiochemistry and Isotope Group of BARC

  2. Report on R and D activities of Health Physics Division 1990-1993

    International Nuclear Information System (INIS)

    This report is a compilation of various R and D programmes undertaken, continued and/or completed by Health Physics Division of Bhabha Atomic Research Centre (BARC) during the period 1990-1993. The findings and results of several types of investigations on topics ranging from environmental studies, radiation dosimetry - internal and external, operational health physics, site evaluation studies, micrometeorology, instrumentation and techniques and industrial hygiene and safety are presented in the form of abstracts. The abstracts have been arranged subject wise. References to the scientific papers and technical reports published or presented have been included. Also included are extracts from IAEA Research Agreements and theses submitted for the award of M.Sc./Ph.D. degrees by research by the staff members of the Division. (author). appendix

  3. Health, Safety, and Environment Division

    Energy Technology Data Exchange (ETDEWEB)

    Wade, C [comp.

    1992-01-01

    The primary responsibility of the Health, Safety, and Environmental (HSE) Division at the Los Alamos National Laboratory is to provide comprehensive occupational health and safety programs, waste processing, and environmental protection. These activities are designed to protect the worker, the public, and the environment. Meeting these responsibilities requires expertise in many disciplines, including radiation protection, industrial hygiene, safety, occupational medicine, environmental science and engineering, analytical chemistry, epidemiology, and waste management. New and challenging health, safety, and environmental problems occasionally arise from the diverse research and development work of the Laboratory, and research programs in HSE Division often stem from these applied needs. These programs continue but are also extended, as needed, to study specific problems for the Department of Energy. The results of these programs help develop better practices in occupational health and safety, radiation protection, and environmental science.

  4. Ontario Hydro Research Division annual report 1988

    International Nuclear Information System (INIS)

    The Research Division of Ontario Hydro conducts research in the fields of chemistry, civil engineering, electrical engineering, mechanical engineering, metallurgy, and operations. Much of the research has a bearing on the safe, environmentally benign operation of Ontario Hydro's nuclear power plants. Particular emphasis has been placed on nuclear plant component aging and plant life assurance

  5. Materials Sciences Division 1990 annual report

    International Nuclear Information System (INIS)

    This report is the Materials Sciences Division's annual report. It contains abstracts describing materials research at the National Center for Electron Microscopy, and for research groups in metallurgy, solid-state physics, materials chemistry, electrochemical energy storage, electronic materials, surface science and catalysis, ceramic science, high tc superconductivity, polymers, composites, and high performance metals

  6. Materials Sciences Division 1990 annual report

    Energy Technology Data Exchange (ETDEWEB)

    1990-01-01

    This report is the Materials Sciences Division's annual report. It contains abstracts describing materials research at the National Center for Electron Microscopy, and for research groups in metallurgy, solid-state physics, materials chemistry, electrochemical energy storage, electronic materials, surface science and catalysis, ceramic science, high tc superconductivity, polymers, composites, and high performance metals.

  7. Supplemental Instruction in Physical Chemistry I

    Science.gov (United States)

    Toby, Ellen; Scott, Timothy P.; Migl, David; Kolodzeji, Elizabeth

    2016-01-01

    Physical chemistry I at Texas A&M University is an upper division course requiring mathematical and analytical skills. As such, this course poses a major problem for many Chemistry, Engineering, Biochemistry and Genetics majors. Comparisons between participants and non-participants in Supplemental Instruction for physical chemistry were made…

  8. Development of a compact 25-channel preamplifier module for Si-pad detectors of the BARC-CPDA

    International Nuclear Information System (INIS)

    The BARC Charged Particle Detector Array modules use indigenously developed Si pad detectors as their first element. Total number of charge sensitive pre-amplifiers required for the Si-pad detectors is 250. One of the main ideas here is a layout of five pre-amplifiers connected with one Si-pad detector (called a bank of preamplifiers). In the present work, a 25-channel pre-amplifier module that can cater to 5 independent Si-pad detectors, or a five-bank module, has been developed. This module uses pre-amp hybrid chips A1422H from CAEN S.p.A. and is housed in a double width NIM standard box. The module has been tested for performance using proton and ''7Li beams from FOTIA facility, Trombay

  9. Radiochemistry Division annual progress report: 1988

    International Nuclear Information System (INIS)

    The report covers the research and development (R and D) work carried out by Radiochemistry Division, Bhabha Atomic Research Centre, Bombay during the period 1987-1988. The R and D work is reported in the form of individual summari es grouped under the headings: (1)Actinide Chemistry, (2)Nuclear Chemistry, and (3)Spectroscopy. Some of the highlights of the work are studies on : (a)solvent extraction and complexation behaviour of actinides, (b)helium ion induced fission of 238U and 165Ho and fission yield of 252Cf(sf), (c)separation of rare earths from fission products, (d)positron annihilation spectroscopy of high Tc superconductors, and (e)EPR spectroscopy of high Tc superconductors. Radioanalytical services and radiation sources given to the other Divisions and Organisations are listed. A list of publications and symposia papers by scientists of the Division is also given. 45 figs., 49 tabs

  10. Brachytherapy of intra ocular tumors using ′BARC I-125 Ocu-Prosta seeds′: An Indian experience

    Directory of Open Access Journals (Sweden)

    Vikas Khetan

    2014-01-01

    Full Text Available Aim: To report our experience of brachytherapy using ′BARC I-125 Ocu-Prosta seeds′ for the management of intraocular tumors with regard to tumor control, globe preservation visual outcome, and patient survival at Sankara Nethralaya, Chennai, India between September 2003 and May 2011. Materials and Methods: We reviewed records of 35 eyes of 35 patients who underwent ophthalmic brachytherapy between September 2003 and May 2011. Twenty-one cases had choroidal melanoma, nine had childhood retinoblastoma, two had adult-onset retinoblastoma, and there were one case each of vasoproliferative tumor, retinal angioma, and ciliary body melanoma. Brachytherapy was administered using a 15- or 20-mm gold plaque with or without a notch. Brachytherapy was the primary treatment modality in all tumors other than retinoblastoma, wherein brachytherapy was done post chemoreduction for residual tumor. Results: For choroidal melanomas, the mean radiation dose was 68.69 ± 15.07 (range, 47.72-94.2 Gy. The eye salvage rate was 13/20 (65% and tumor control rate was 16/20 (80% at an average follow-up of 24.43 ± 24.75 (range, 1.5-87.98 months. For retinoblastoma, the mean dose was 45.85 ± 3.90 (range, 39.51-50.92 Gy. The eye salvage rate and tumor control rate was 5/6 (83.3% at an average follow-up of 38.36 ± 31.33 (range, 4.14-97.78 months. All eyes with retinoblastoma needed additional focal therapy for tumor control and eye salvage. Conclusion: The results of this retrospective study confirms that the use of ′BARC I-125 Ocu-Prosta seeds′ in episcleral plaques to treat intraocular tumors offers a viable option for the management of intraocular cancers.

  11. ZZ BARC-27GRP, 27-Group Infinitely Dilute and Bondarenko Cross-Section Library from ENDF/B

    International Nuclear Information System (INIS)

    1 - Description of problem or function: - BARC-27GRP: Format: 1-DX; Number of groups: 27; Nuclides: U-235, U-238, Pu-239, Pu-240, Pu-241, C, O, H, Al, Si, Na, Mg, Cr, Fe, Ni, Mo; Origin: ENDF/B-IV; Weighting spectrum: flux weighting proportional to 1/ΣT(u); fission weighting plus 1/E spectrum. - BARC-35-A: Format: SPHINX, Fx2-TH; Number of groups: 35; Nuclides: Al, He, Si, H, Fe, O, C, Na, Li, B, Be, N, Ca, Mn, V, Mo, Pb, Pu, Gd, K, Sm, Dy, Lu, Nb, U, Cr, Ni, Th, Np, Am, Zr, Cd, Eu, Mg, Ta, Cm, F, Ti, W. Origin: ENDF/B-IV; Weighting spectrum: fission - 1/E - thermal Maxwellian. - IAEA0856/01: 27-group resonance self-shielding factors and infinite diluted Cross sections for U-235, U-238, Pu-239, Pu-240, Pu-241, C, O, H, Al, Si, Na, Mg, Cr, Fe, Ni, Mo, generated by using the basic cross section and resonance parameter data from the ENDF/B-4 library. 2 - Method of solution: The 27-group constants were obtained by integrating the microscopic data over group intervals using a flux weighting proportional to 1/ΣT(u) and a fission plus 1/E spectrum. The standard ABBN group structure is used. The self-shielding factors were calculated for the following temperatures: 300, 900, 2100 (degrees Kelvin) and for potential scattering Cross sections of 10000, 100, 10, 1 barns. A thermal group is also included. For the 35-group library, resonance self-shielding factors are given at 300, 900, and 2100 K for a variety of dilution constants. Group Cross sections cover the energy range from 15 MeV to 0.005 eV and have been derived using Bondarenko flux approximation with a fission-1/E-thermal Maxwellian spectrum. The scattering Cross sections have been represented by a P3 Legendre expansion

  12. Chemical Technology Division annual technical report, 1994

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1995-06-01

    Highlights of the Chemical Technology (CMT) Division`s activities during 1994 are presented. In this period, CMT conducted research and development in the following areas: (1) electrochemical technology, including advanced batteries and fuel cells; (2) technology for fluidized-bed combustion; (3) methods for treatment of hazardous waste and mixed hazardous/radioactive waste; (4) the reaction of nuclear waste glass and spent fuel under conditions expected for an unsaturated repository; (5) processes for separating and recovering transuranic elements from waste streams, concentrating radioactive waste streams with advanced evaporator technology, and producing {sup 99}Mo from low-enriched uranium for medical applications; (6) electrometallurgical treatment of the many different types of spent nuclear fuel in storage at Department of Energy sites; and (8) physical chemistry of selected materials in environments simulating those of fission and fusion energy systems. The Division also conducts basic research in catalytic chemistry associated with molecular energy resources and novel ceramic precursors; materials chemistry of superconducting oxides, electrified metal/solution interfaces, molecular sieve structures, and impurities in scrap copper and steel; and the geochemical processes involved in mineral/fluid interfaces and water-rock interactions occurring in active hydrothermal systems. In addition, the Analytical Chemistry Laboratory in CMT provides a broad range of analytical chemistry support services to the technical programs at Argonne National Laboratory (ANL).

  13. Chemical Technology Division, Annual technical report, 1991

    Energy Technology Data Exchange (ETDEWEB)

    1992-03-01

    Highlights of the Chemical Technology (CMT) Division`s activities during 1991 are presented. In this period, CMT conducted research and development in the following areas: (1) electrochemical technology, including advanced batteries and fuel cells; (2) technology for fluidized-bed combustion and coal-fired magnetohydrodynamics; (3) methods for treatment of hazardous and mixed hazardous/radioactive waste; (4) the reaction of nuclear waste glass and spent fuel under conditions expected for an unsaturated repository; (5) processes for separating and recovering transuranic elements from nuclear waste streams; (6) recovery processes for discharged fuel and the uranium blanket in the Integral Fast Reactor (IFR); (7) processes for removal of actinides in spent fuel from commercial water-cooled nuclear reactors and burnup in IFRs; and (8) physical chemistry of selected materials in environments simulating those of fission and fusion energy systems. The Division also conducts basic research in catalytic chemistry associated with molecular energy resources; chemistry of superconducting oxides and other materials of interest with technological application; interfacial processes of importance to corrosion science, catalysis, and high-temperature superconductivity; and the geochemical processes involved in water-rock interactions occurring in active hydrothermal systems. In addition, the Analytical Chemistry Laboratory in CMT provides a broad range of analytical chemistry support services to the technical programs at Argonne National Laboratory (ANL).

  14. Report of the Solid State Physics Division (1991-1992)

    International Nuclear Information System (INIS)

    This report summarizes the activities carried out in the Solid State Physics Division at Bhabha Atomic Research Centre (BARC) covering the period from 1991-1992. The activities are reported in the form of individual summaries arranged under headings: Research Activities, Instrumentation and Software Development. The main research activity of the Division is centered around the utilisation of the neutron beams at the Dhruva and Cirus reactors. A number of research proposals from the universities, funded by the Inter University Consortium come under the category of powder diffraction studies. Another area of research where there is a good demand from universities is in the field of small angle neutron scattering. In addition to the neutron beam research, a number of other investigations pertaining to Raman scattering, liquid crystals, model membranes, magnetism, protein crystallography etc. have contributed significantly to the research programme. The fully indigenous guide laboratory is expected to become operational soon. A list of published papers, internal reports and submitted theses is given at the end. (author). refs., figs., tabs

  15. Nuclear Physics Division Biennial Report 1995-1996

    International Nuclear Information System (INIS)

    The report gives an overview of the scientific and technical activities of the Nuclear Physics Division (NPD) during the last two years. The physics report includes detailed experimental explorations carried out using heavy ion beams at the BARC-TIFR Pelletron facility located at Tata Institute of Fundamental Research (TIFR) and operated by NPD staff. The report also includes the experimental collaborations carried out at advanced accelerator facilities, like RHIC, COSY, etc., abroad for the quark gluon plasma studies and the η meson production in the intermediate energy nuclear reactions. The theoretical research reported includes that relevant to various experimental programs mentioned above and in general, the nuclear physics in non- and sub-nucleonic domains. In the field of accelerator development the division has the ongoing projects of the design, development, fabrication and installation of the 7 MV Folded Tandem Ion Accelerator (FOTIA) and Superconducting Linac Booster for the Pelletron Accelerator. The first stage of the linac project has been completed. It has successfully demonstrated the functioning of the indigenously developed resonator modules. On FOTIA project the installation has begun. The injector part for putting the beam in the vertical column is working. The Pelletron Accelerator, the main work horse for experimentalists, provided an excellent service to the users. A report on its running and maintenance is included. (author)

  16. Radiochemistry Division biennial progress report: 1995-1996

    International Nuclear Information System (INIS)

    The research and development activities of Radiochemistry Division during 1995-96 are briefly described under the headings : (1) nuclear chemistry; (2) actinide chemistry; (3) spectroscopy and (4) instrumentation. Nuclear chemistry work deals with the areas of nuclear reactions, nuclear spectroscopy, nuclear probes and radioanalytical techniques. The research programme in actinide chemistry centered on development of novel procedures for the separation of actinides, guest-host chemistry of lanthanides, actinides and fission products and extractants for solvent extraction. Spectroscopy section activities are summarised under (1) basic research in the solid state chemistry; (2) development of analytical spectroscopic methods for the trace metal determination in nuclear materials; (3) chemical quality control of plutonium 239, uranium 233 and thorium based nuclear fuels. Instrumentation group deals mainly with servicing and maintenance of electronic instruments and allied systems. A list of publications, by the scientific staff of the Divisions is also included. (author)

  17. Facility for testing and certification of medical x-ray films at BARC

    International Nuclear Information System (INIS)

    The major problem faced in the x-ray department with regard to x-ray films is the non consistent image quality of x-ray films leading to lesions missed/ wrong diagnosis and as a result retakes of the examination and increased radiation dosage to the patient. This report illustrates the methodology adopted by this Division towards implementation of quality assurance of the basic imaging devices namely the medical x-ray films. The characteristics properties desirable in x-ray films are the qualitative response of the emulsion to standard set of exposure and processing conditions in terms of speed, contrast and density. It should be consistent for exposure conditions in a custom built equipment simulating the quantum and type of energy that would be received by the film during diagnostic examinations. The phantom, geometrical set up and beam quality specifications as per the ISO standards required for x-ray sensitometry have been described in this report. (author)

  18. Chemical Technology Division annual technical report 1989

    International Nuclear Information System (INIS)

    Highlights of the Chemical Technology (CMT) Division's activities during 1989 are presented. In this period, CMT conducted research and development in the following areas: (1) electrochemical technology, including high-performance batteries (mainly lithium/iron sulfide and sodium/metal chloride), aqueous batteries (lead-acid and nickel/iron), and advanced fuel cells with molten carbonate and solid oxide electrolytes: (2) coal utilization, including the heat and seed recovery technology for coal-fired magnetohydrodynamics plants and the technology for fluidized-bed combustion; (3) methods for recovery of energy from municipal waste and techniques for treatment of hazardous organic waste; (4) nuclear technology related to a process for separating and recovering transuranic elements from nuclear waste and for producing 99Mo from low-enriched uranium targets, the recovery processes for discharged fuel and the uranium blanket in a sodium-cooled fast reactor (the Integral Fast Reactor), and waste management; and (5) physical chemistry of selected materials in environments simulating those of fission and fusion energy systems. The Division also has a program in basic chemistry research in the areas of fluid catalysis for converting small molecules to desired products; materials chemistry for superconducting oxides and associated and ordered solutions at high temperatures; interfacial processes of importance to corrosion science, high-temperature superconductivity, and catalysis; and the geochemical processes responsible for trace-element migration within the earth's crust. The Division continued to be administratively responsible for and the major user of the Analytical Chemistry Laboratory at Argonne National Laboratory (ANL)

  19. Chemical Technology Division annual technical report, 1985

    International Nuclear Information System (INIS)

    Highlights of the Chemical Technology (CMT) Division's activities during 1985 are presented. In this period, CMT conducted research and development in areas that include the following: (1) advanced batteries - mainly lithium-alloy/metal sulfide and sodium/sulfur; (2) advanced fuel cells with molten carbonate or solid oxide electrolytes; (3) corrosion-protective coatings for high-strength steel; (4) coal utilization, including the heat and seed recovery technology for coal-fired magnetohydrodynamics plants and the technology for fluidized-bed combustion; (5) methodologies for recovery of energy from municipal waste; (6) nuclear technology related to waste management, the recovery processes for discharged fuel and the uranium blanket in a sodium-cooled fast reactor, and proof of breeding in a light water breeder reactor; and (7) physical chemistry of selected materials in environments simulating those of fission and fusion energy systems. The Division also has a program in basic chemistry research in the areas of catalytic hydrogenation and catalytic oxidation; materials chemistry for associated and ordered solutions at high temperatures; interfacial processes of importance to corrosion science, surface science, and catalysis; the thermochemistry of zeolites and related silicates; and the geochemical processes responsible for trace-element migration within the earth's crust. The Division continued to be the major user of the technical support provided by the Analytical Chemistry Laboratory at ANL

  20. Development and utilization of various target assemblies for proton beam irradiation setup at 14 UD BARC-TIFR pelletron accelerator facility

    International Nuclear Information System (INIS)

    Drift space above analyzing magnet is modified to accommodate a proton beam setup at 6 meter level of 14UD BARC-TIFR Pelletron Accelerator Facility. This setup is capable of delivering proton beam in the energy range of 2 MeV to 26 MeV and current in μA range. The shielding at this level is such that radiation is within permissible limit when high proton beam current is accelerated. (author)

  1. 2002 Chemical Engineering Division annual report

    International Nuclear Information System (INIS)

    The Chemical Engineering Division is one of eight engineering research divisions within Argonne National Laboratory, one of the U.S. government's oldest and largest research laboratories. The University of Chicago oversees the laboratory on behalf of the U.S. Department of Energy (DOE). Argonne's mission is to conduct basic scientific research, to operate national scientific facilities, to enhance the nation's energy resources, and to develop better ways to manage environmental problems. Argonne has the further responsibility of strengthening the nation's technology base by developing innovative technology and transferring it to industry. The Division is a diverse early-stage engineering organization, specializing in the treatment of spent nuclear fuel, development of advanced electrochemical power sources, and management of both high- and low-level nuclear wastes. Although this work is often indistinguishable from basic research, our efforts are directed toward the practical devices and processes that are covered by Argonne's mission. Additionally, the Division operates the Analytical Chemistry Laboratory; Environment, Safety, and Health Analytical Chemistry services; and Dosimetry and Radioprotection services, which provide a broad range of analytical services to Argonne and other organizations. The Division is multidisciplinary. Its people have formal training as ceramists; physicists; material scientists; electrical, mechanical, chemical, and nuclear engineers; and chemists. They have experience working in academia; urban planning; and the petroleum, aluminum, and automotive industries. Their skills include catalysis, ceramics, electrochemistry, metallurgy, nuclear magnetic resonance spectroscopy, and petroleum refining, as well as the development of nuclear waste forms, batteries, and high-temperature superconductors. Our wide-ranging expertise finds ready application in solving energy and environmental problems. Division personnel are frequently called on by

  2. Radiochemistry Division annual progress report for 1973

    International Nuclear Information System (INIS)

    The R and D work carried out in the Radiochemistry Division of the Bhabha Atomic Research Centre, Bombay, during 1973 is reported under the following topical headings : process chemistry (of transuranic elements), radioanalytical chemistry and services, chemical quality control of Pu fuels, heavy element chemistry, nuclear chemistry and instrumentation. The major highlights are : preparation of 238Pu, non-destructive estimation of Pu by X-ray fluorescence and gamma counting, determining impurities in trace amounts in uranium and plutonium fuels, determination of solubility of PuF3 in molten fluoride mixtures as a part of the chemical development programme for the molten salt reactor concept, studies on correlation between average total kinetic energy, fission asymmetry and shell structure. (M.G.B.)

  3. Modified BARC nebulizer system for measuring mucociliary tracheal transport rate in smokers and in patients with chronic obstructive pulmonary disease

    International Nuclear Information System (INIS)

    A simple noninvasive method for in vivo monitoring of mucociliary tracheal transport rate (MTTR) is described. The technique is based on deposition of radioactive aerosols in the large airways of the lung and measuring their rate of movement as they are transported up the trachea. A technique for generating larger human serum albumin (HSA) radioaerosols, by using the BARC dry aerosol delivery system, is described. Qualitative data on bolus motion by cinescintigraphy and quantitative data for calculating the MTTR were obtained from a computer for 12 normal subjects, three asymptomatic smokers, four symptomatic smokers and 12 patients with chronic obstructive pulmonary disease (COPD). The mean MTTR was 4.11 + 0.84 mm/min in normals. Ten of the 12 COPD patients showed either a reduced MTTR or no motion of the boli. The motion as seen in cine mode was linear in all the 12 normals. Although MTTR in the remaining two patients with COPD was normal the bolus exhibited a spiral motion on cinescintigraphy. Asymptomatic smokers showed either reduced MTTR or spiral motion of the bolus, whereas all the symptomatic smokers showed reduced MTTR. It was observed that the movement of the boli in the symptomatic smokers and patients with COPD varied widely, showing, for example, regurgitation, spiral or axial motion, stasis and movement of the bolus from one bronchus to the other. (author). 17 refs, 3 figs, 2 tabs

  4. Design and construction of a target chamber and associated equipments for the BARC Charged Particle Detector Array

    International Nuclear Information System (INIS)

    A 60 cm diameter spherical high-vacuum target-chamber with side-opening hemispherical-lids, two ancillary-chambers, beam-line-tubes, tees and other high-vacuum components, and chamber-lid handling systems have been designed, constructed and installed for the Charged Particle Detector Array in BARC-TIFR Pelletron-LINAC Facility, Mumbai. This array of several tens of Si-CsI detector modules and other ancillary-detectors will be used for investigations in fusion-fission dynamics, nuclear structure at elevated temperatures and angular momenta, exotic nuclear clusters and related fields. This paper describes the unique features of the system that aid different coincidence experiments, the chamber fabrication experience and the pump-down characteristics with a turbo molecular pump. Unlike many other target chambers in use, this chamber allows multiple overall geometrical configurations to be set to reach experimental goals. For instance, by replacing a hemispherical-lid from one side with a flat-lid, the overall configuration becomes hemispherical. This way, high geometrical efficiency can be provided to an ancillary gamma detector array by allowing it to move close to target from the flat-lid side, although with some sacrifice of geometrical efficiency for charged particles. In experiments where a further improvement of geometrical efficiency for a gamma array is desired, a third compact-cylinder configuration can also be arrived at. Thinned portion of the lids of the chamber also allow neutron coincidence measurements with charged particles and gamma rays.

  5. Computational Fair Division

    DEFF Research Database (Denmark)

    Branzei, Simina

    Fair division is a fundamental problem in economic theory and one of the oldest questions faced through the history of human society. The high level scenario is that of several participants having to divide a collection of resources such that everyone is satisfied with their allocation -- e.g. two...... heirs dividing a car, house, and piece of land inherited. The literature on fair division was developed in the 20th century in mathematics and economics, but computational work on fair division is still sparse. This thesis can be seen as an excursion in computational fair division divided in two parts...... study alternative and richer models, such as externalities in cake cutting, simultaneous cake cutting, and envy-free cake cutting. The second part of the thesis tackles the fair allocation of multiple goods, divisible and indivisible. In the realm of divisible goods, we investigate the well known...

  6. Chemical Technology Division annual technical report, 1993

    Energy Technology Data Exchange (ETDEWEB)

    Battles, J.E.; Myles, K.M.; Laidler, J.J.; Green, D.W.

    1994-04-01

    Chemical Technology (CMT) Division this period, conducted research and development in the following areas: advanced batteries and fuel cells; fluidized-bed combustion and coal-fired magnetohydrodynamics; treatment of hazardous waste and mixed hazardous/radioactive waste; reaction of nuclear waste glass and spent fuel under conditions expected for an unsaturated repository; separating and recovering transuranic elements, concentrating radioactive waste streams with advanced evaporators, and producing {sup 99}Mo from low-enriched uranium; recovering actinide from IFR core and blanket fuel in removing fission products from recycled fuel, and disposing removal of actinides in spent fuel from commercial water-cooled nuclear reactors; and physical chemistry of selected materials in environments simulating those of fission and fusion energy systems. The Division also conducts basic research in catalytic chemistry associated with molecular energy resources and novel ceramic precursors; materials chemistry of superconducting oxides, electrified metal/solution interfaces, molecular sieve structures, thin-film diamond surfaces, effluents from wood combustion, and molten silicates; and the geochemical processes involved in water-rock interactions. The Analytical Chemistry Laboratory in CMT also provides a broad range of analytical chemistry support.

  7. Chemical Technology Division, Annual technical report, 1991

    Energy Technology Data Exchange (ETDEWEB)

    1992-03-01

    Highlights of the Chemical Technology (CMT) Division's activities during 1991 are presented. In this period, CMT conducted research and development in the following areas: (1) electrochemical technology, including advanced batteries and fuel cells; (2) technology for fluidized-bed combustion and coal-fired magnetohydrodynamics; (3) methods for treatment of hazardous and mixed hazardous/radioactive waste; (4) the reaction of nuclear waste glass and spent fuel under conditions expected for an unsaturated repository; (5) processes for separating and recovering transuranic elements from nuclear waste streams; (6) recovery processes for discharged fuel and the uranium blanket in the Integral Fast Reactor (IFR); (7) processes for removal of actinides in spent fuel from commercial water-cooled nuclear reactors and burnup in IFRs; and (8) physical chemistry of selected materials in environments simulating those of fission and fusion energy systems. The Division also conducts basic research in catalytic chemistry associated with molecular energy resources; chemistry of superconducting oxides and other materials of interest with technological application; interfacial processes of importance to corrosion science, catalysis, and high-temperature superconductivity; and the geochemical processes involved in water-rock interactions occurring in active hydrothermal systems. In addition, the Analytical Chemistry Laboratory in CMT provides a broad range of analytical chemistry support services to the technical programs at Argonne National Laboratory (ANL).

  8. Chemical Technology Division annual technical report, 1994

    International Nuclear Information System (INIS)

    Highlights of the Chemical Technology (CMT) Division's activities during 1994 are presented. In this period, CMT conducted research and development in the following areas: (1) electrochemical technology, including advanced batteries and fuel cells; (2) technology for fluidized-bed combustion; (3) methods for treatment of hazardous waste and mixed hazardous/radioactive waste; (4) the reaction of nuclear waste glass and spent fuel under conditions expected for an unsaturated repository; (5) processes for separating and recovering transuranic elements from waste streams, concentrating radioactive waste streams with advanced evaporator technology, and producing 99Mo from low-enriched uranium for medical applications; (6) electrometallurgical treatment of the many different types of spent nuclear fuel in storage at Department of Energy sites; and (8) physical chemistry of selected materials in environments simulating those of fission and fusion energy systems. The Division also conducts basic research in catalytic chemistry associated with molecular energy resources and novel ceramic precursors; materials chemistry of superconducting oxides, electrified metal/solution interfaces, molecular sieve structures, and impurities in scrap copper and steel; and the geochemical processes involved in mineral/fluid interfaces and water-rock interactions occurring in active hydrothermal systems. In addition, the Analytical Chemistry Laboratory in CMT provides a broad range of analytical chemistry support services to the technical programs at Argonne National Laboratory (ANL)

  9. Chemical Technology Division annual technical report, 1993

    International Nuclear Information System (INIS)

    Chemical Technology (CMT) Division this period, conducted research and development in the following areas: advanced batteries and fuel cells; fluidized-bed combustion and coal-fired magnetohydrodynamics; treatment of hazardous waste and mixed hazardous/radioactive waste; reaction of nuclear waste glass and spent fuel under conditions expected for an unsaturated repository; separating and recovering transuranic elements, concentrating radioactive waste streams with advanced evaporators, and producing 99Mo from low-enriched uranium; recovering actinide from IFR core and blanket fuel in removing fission products from recycled fuel, and disposing removal of actinides in spent fuel from commercial water-cooled nuclear reactors; and physical chemistry of selected materials in environments simulating those of fission and fusion energy systems. The Division also conducts basic research in catalytic chemistry associated with molecular energy resources and novel ceramic precursors; materials chemistry of superconducting oxides, electrified metal/solution interfaces, molecular sieve structures, thin-film diamond surfaces, effluents from wood combustion, and molten silicates; and the geochemical processes involved in water-rock interactions. The Analytical Chemistry Laboratory in CMT also provides a broad range of analytical chemistry support

  10. Chemical Technology Division, Annual technical report, 1991

    International Nuclear Information System (INIS)

    Highlights of the Chemical Technology (CMT) Division's activities during 1991 are presented. In this period, CMT conducted research and development in the following areas: (1) electrochemical technology, including advanced batteries and fuel cells; (2) technology for fluidized-bed combustion and coal-fired magnetohydrodynamics; (3) methods for treatment of hazardous and mixed hazardous/radioactive waste; (4) the reaction of nuclear waste glass and spent fuel under conditions expected for an unsaturated repository; (5) processes for separating and recovering transuranic elements from nuclear waste streams; (6) recovery processes for discharged fuel and the uranium blanket in the Integral Fast Reactor (IFR); (7) processes for removal of actinides in spent fuel from commercial water-cooled nuclear reactors and burnup in IFRs; and (8) physical chemistry of selected materials in environments simulating those of fission and fusion energy systems. The Division also conducts basic research in catalytic chemistry associated with molecular energy resources; chemistry of superconducting oxides and other materials of interest with technological application; interfacial processes of importance to corrosion science, catalysis, and high-temperature superconductivity; and the geochemical processes involved in water-rock interactions occurring in active hydrothermal systems. In addition, the Analytical Chemistry Laboratory in CMT provides a broad range of analytical chemistry support services to the technical programs at Argonne National Laboratory (ANL)

  11. Bad chemistry

    OpenAIRE

    Petsko, Gregory A

    2004-01-01

    General chemistry courses haven't changed significantly in forty years. Because most basic chemistry students are premedical students, medical schools have enormous influence and could help us start all over again to create undergraduate chemistry education that works.

  12. Indigenous development of neutron detectors for use at various neutron scattering instruments at BARC

    International Nuclear Information System (INIS)

    Gas filled neutron detectors are developed in-house for various neutron scattering instruments, located at neutron beam research facility, Dhruva and CIRUS. This development program is successfully carried out to upgrade the scattering instruments with respect to detection efficiency, instrument resolution and judicial utilization of reactor beam time. The range of detectors include the miniature beam monitors, 1 m long 1-D Position sensitive detectors (PSD), 1-D PSD based on microstrip and 2-D PSD based on multiwire geometry. Developmental work involves detailed investigations on hardware aspects, behavior of gases and processing electronics for optimization of PSD performance. The Powder Diffractometer and Hi-Q Diffractometer make use of 5 identical 1 m long I-D PSDs to scan scattering angles in range 3 deg to 140 deg. Up gradation of these instruments using 15 high efficiency PSDs, arranged in three stacks of 5 PSDs in a layer, is, in progress. With each PSD (3He 10 bar + Kr 2 bar) showing the efficiency gain of 2 at 1.2 A, detector bank is expected to show overall gain in detection efficiency 6 times the present value and reduction in data collection time by equivalent factor. Neutron Reflectometer uses a 20 cm long PSD based on carbon coated quartz high resistive anode. Operational stability and position resolution of desired magnitude is obtained. Further up gradation to stack of 2 PSDs for improving detection efficiency is in progress. Developmental work on prototype microstrip based detector and multiwire based 2-D PSD based on charge division readout method is presented. Multiwire based PSD with delay line readout method, shows the advantage of better position resolution and high count rate capability. Low efficiency neutron beam imaging monitor is successfully developed using delay line readout method. Review on development and characterization of these detectors is presented. (author)

  13. Division of atomic physics

    International Nuclear Information System (INIS)

    The Division of Atomic Physics, Lund Institute of Technology (LTH), is responsible for the basic physics teaching in all subjects at LTH and for specialized teaching in Optics, Atomic Physics, Atomic and Molecular Spectroscopy and Laser Physics. The Division has research activities in basic and applied optical spectroscopy, to a large extent based on lasers. It is also part of the Physics Department, Lund University, where it forms one of eight divisions. Since the beginning of 1980 the research activities of our division have been centred around the use of lasers. The activities during the period 1991-1992 is described in this progress reports

  14. Radiochemistry Division: annual progress report: 1987

    International Nuclear Information System (INIS)

    The progress of Research and Development (R and D) activities during the year 1987 are reported in the form of summaries, which are presented under the headings (1) Actinide Chemistry, (2) Nuclear Chemistry, and (3) Spectroscopy. Microwave absorption studies of the high Tsub(c) oxide superconductor YBa2Cu3Osub(7-x) using electron paramagnetic resonance techniques are the new feature during the report year. Radioanalytical services and radiation sources in the form of electrodeposited sources or standard soluti ons were also given to the other Divisions, other units of the Department of Atomic Energy, and other organisations in the country. A list of papers by the members of the Division published in various journals and presented at various symposia, conferences etc. is given at the end of the report. (M.G.B.). refs., 51 tabs., 33 figs

  15. PREFACE: 11th International Workshop on Positron and Positronium Chemistry (PPC-11)

    Science.gov (United States)

    Pujari, P. K.; Sudarshan, K.; Dutta, D.

    2015-06-01

    The International Workshop on Positron and Positronium Chemistry (PPC) is a prestigious triennial conference series with a rich history. The 11th meeting in the series (PPC-11) was held at Cidade de Goa, Goa, India during 9-14, November, 2014. It was organized by Bhabha Atomic Research Centre (BARC), Mumbai. The co-organizers were Saha Institute of Nuclear Physics (SINP), Kolkata, Indira Gandhi Centre for Atomic Research (IGCAR), Kalpakkam and Indian Association of Nuclear Chemists and Allied Scientists (IANCAS), Mumbai. PPC-11 attracted participants both from academic institutions and industries. About 120 participants from 20 countries representing all continents participated in the conference. The conference continued the tradition of excellence in terms of quality of presentations and discussions. There were 33 plenary and invited talks, 39 oral presentations and 40 posters. The conference stood true to its multidisciplinary tag with papers presented in the fields of fundamentals of positron and positronium chemistry, applications in polymers, porous materials, metals/alloys, studies in liquids, biological applications as well as developments in theory and experimental techniques. The enthusiastic participation of senior researchers and young students made the scientific program a grand success. In order to encourage the student participants (twenty) and promote excellence, a committee of senior members evaluated their presentations and the top three contributions were awarded. The positron and positronium community paid homage to the memory of late Profs. J. Kristiak and A.T. Stewart. A brief sketch of their life and work was presented by Profs. Jan Kuriplach and Toshio Hyodo, respectively. All the papers published in these proceedings have been peer reviewed by the participants of PPC-11. Editors thank all the reviewers for sparing their valuable time and helping us in bringing out the proceedings with 43 contributed articles in the scheduled time. We are

  16. DanceChemistry: Helping Students Visualize Chemistry Concepts through Dance Videos

    OpenAIRE

    Tay, GC; Edwards, KD

    2015-01-01

    © 2015 The American Chemical Society and Division of Chemical Education, Inc. A visual aid teaching tool, the DanceChemistry video series, has been developed to teach fundamental chemistry concepts through dance. These educational videos portray chemical interactions at the molecular level using dancers to represent chemical species. Students reported that the DanceChemistry videos helped them visualize chemistry ideas in a new and memorable way. Surveying the general laboratory course at the...

  17. Chemical Technology Division annual technical report, 2001

    International Nuclear Information System (INIS)

    The Chemical Technology Division (CMT) is one of eight engineering research divisions within Argonne National Laboratory, one of the U.S. government's oldest and largest research laboratories. The University of Chicago oversees the laboratory on behalf of the U.S. Department of Energy (DOE). Argonne's mission is to conduct basic scientific research, to operate national scientific facilities, to enhance the nation's energy resources, and to develop better ways to manage environmental problems. Argonne has the further responsibility of strengthening the nation's technology base by developing innovative technology and transferring it to industry. CMT is a diverse early-stage engineering organization, specializing in the treatment of spent nuclear fuel, development of advanced electrochemical power sources, and management of both high- and low-level nuclear wastes. Although this work is often indistinguishable from basic research, our efforts are directed toward the practical devices and processes that are covered by Argonne's mission. Additionally, the Division operates the Analytical Chemistry Laboratory and Environment, Safety, and Health Analytical Chemistry services, which provide a broad range of analytical services to Argonne and other organizations. The Division is multidisciplinary. Its people have formal training as ceramists; physicists; material scientists; electrical, mechanical, chemical, and nuclear engineers; and chemists. They have experience working in academia; urban planning; and the petroleum, aluminum, and automotive industries. Their skills include catalysis, ceramics, electrochemistry, metallurgy, nuclear magnetic resonance spectroscopy, and petroleum refining, as well as the development of nuclear waste forms, batteries, and high-temperature superconductors

  18. Chemical Engineering Division annual technical report, 1980

    International Nuclear Information System (INIS)

    Highlights of the Chemical Engineering (CEN) Division's activities during 1980 are presented. In this period, CEN conducted research and development in the following areas: (1) rechargeable lithium-aluminum/iron sulfide batteries for electric vehicles and other applications; (2) ambient-temperature batteries - improved lead-acid, nickel/zinc, and nickel/iron - for electric vehicles; (3) energy-efficient industrial electrochemical processes; (4) molten carbonate fuel cells for use by electric utilities; (5) coal technology, mainly fluidized-bed combustion of coal in the presence of SO2 sorbent of limestone; (6) heat- and seed-recovery technology for open-cycle magnetohydrodynamic systems; (7) solar energy collectors and thermal energy storage; (8) fast breeder reactor chemistry research - chemical support of reactor safety studies, chemistry of irradiated fuels, and sodium technology; (9) fuel cycle technology - management of nuclear wastes, reprocessing of nuclear fuels, and proof-of-breeding studies for the Light Water Breeder Reactor; and (10) magnetic fusion research - systems analysis and engineering experimentation, materials research, and neutron dosimetry and damage analysis. The CEN Division also has a basic energy sciences program, which includes experimental and theoretical research on (1) the catalytic hydrogenation of carbon monoxide and methanol homologation, (2) the thermodynamic properties of a wide variety of inorganic and organic materials, (3) significant mechanisms for the formation of atmospheric sulfate and nitrogen-bearing aerosols, (4) processes occurring at electrodes and in electrolytes, and (5) the physical properties of salt vapors. In addition, the Division operated the Central Analytical Chemistry Laboratory

  19. Division: The Sleeping Dragon

    Science.gov (United States)

    Watson, Anne

    2012-01-01

    Of the four mathematical operators, division seems to not sit easily for many learners. Division is often described as "the odd one out". Pupils develop coping strategies that enable them to "get away with it". So, problems, misunderstandings, and misconceptions go unresolved perhaps for a lifetime. Why is this? Is it a case of "out of sight out…

  20. 1998 Chemical Technology Division Annual Technical Report. Applying chemical innovation to environmental problems

    International Nuclear Information System (INIS)

    The Chemical Technology (CMT) Division is a diverse technical organization with principal emphases in environmental management and development of advanced energy sources. The Division conducts research and development in three general areas: (1) development of advanced power sources for stationary and transportation applications and for consumer electronics, (2) management of high-level and low-level nuclear wastes and hazardous wastes, and (3) electrometallurgical treatment of spent nuclear fuel. The Division also performs basic research in catalytic chemistry involving molecular energy resources, mechanisms of ion transport in lithium battery electrolytes, and the chemistry of technology-relevant materials. In addition, the Division operates the Analytical Chemistry Laboratory, which conducts research in analytical chemistry and provides analytical services for programs at Argonne National Laboratory (ANL) and other organizations. Technical highlights of the Division's activities during 1998 are presented

  1. Complex chemistry

    Energy Technology Data Exchange (ETDEWEB)

    Kim, Bong Gon; Kim, Jae Sang; Kim, Jin Eun; Lee, Boo Yeon

    2006-06-15

    This book introduces complex chemistry with ten chapters, which include development of complex chemistry on history coordination theory and Warner's coordination theory and new development of complex chemistry, nomenclature on complex with conception and define, chemical formula on coordination compound, symbol of stereochemistry, stereo structure and isomerism, electron structure and bond theory on complex, structure of complex like NMR and XAFS, balance and reaction on solution, an organo-metallic chemistry, biology inorganic chemistry, material chemistry of complex, design of complex and calculation chemistry.

  2. Complex chemistry

    International Nuclear Information System (INIS)

    This book introduces complex chemistry with ten chapters, which include development of complex chemistry on history coordination theory and Warner's coordination theory and new development of complex chemistry, nomenclature on complex with conception and define, chemical formula on coordination compound, symbol of stereochemistry, stereo structure and isomerism, electron structure and bond theory on complex, structure of complex like NMR and XAFS, balance and reaction on solution, an organo-metallic chemistry, biology inorganic chemistry, material chemistry of complex, design of complex and calculation chemistry.

  3. Assessment of Ultimate Load Capacity for Pre-Stressed Concrete Containment Vessel Model of PWR Design With BARC Code ULCA

    International Nuclear Information System (INIS)

    Ultimate load capacity assessment of nuclear containments has been a thrust research area for Indian Pressurised Heavy Water Reactor (PHWR) power programme. For containment safety assessment of Indian PHWRs a finite element code ULCA was developed at BARC, Trombay. This code has been extensively benchmarked with experimental results. The present paper highlights the analysis results for Prestressed Concrete Containment Vessel (PCCV) tested at Sandia National Labs, USA in a Round Robin analysis activity co-sponsored by Nuclear Power Engineering Corporation (NUPEC), Japan and the U.S Nuclear Regulatory Commission (NRC). Three levels of failure pressure predictions namely the upper bound, the most probable and the lower bound (all with 90% confidence) were made as per the requirements of the round robin analysis activity. The most likely failure pressure is predicted to be in the range of 2.95 Pd to 3.15 Pd (Pd= design pressure of 0.39 MPa for the PCCV model) depending on the type of liners used in the construction of the PCCV model. The lower bound value of the ultimate pressure of 2.80 Pd and the upper bound of the ultimate pressure of 3.45 Pd are also predicted from the analysis. These limiting values depend on the assumptions of the analysis for simulating the concrete-tendon interaction and the strain hardening characteristics of the steel members. The experimental test has been recently concluded at Sandia Laboratory and the peak pressure reached during the test is 3.3 Pd that is enveloped by our upper bound prediction of 3.45 Pd and is close to the predicted most likely pressure of 3.15 Pd. (authors)

  4. Study on the atmospheric dispersion of pollutant in the presence and absence of a hill for BARC, Trombay site

    International Nuclear Information System (INIS)

    Blocking effects generated by topographical features leads to complex flow patterns that might generate mean concentration distributions significantly different from those that might be expected from the mean flow in the absence of the complex terrain features for atmospheric releases of pollutants. The present paper deals with one such study of the effect of a hill on the atmospheric dispersion of pollutant for BARC, Trombay site. The study of wind flow as well as the atmospheric dispersion of pollutant in the presence of 130 m hill behind PP is found to be important to gauge the radiological consequences on population residing beyond this hill. The results of study of the effect of this hill on the wind flow and the concentration distribution of pollutants on the upwind and downwind side of the hill are presented in the paper. It is seen that the wind flow gets modified leading to deceleration in the upwind side of the hill due to terrain blocking, speed up at the top of the hill and deceleration behind the hill. In the absence of hill, flow remains uniform in the downwind direction. It is also found that in the presence of the hill, the released pollutant disperses more as compared to the absence of the hill. Because of the additional dispersion provided by the hill and also because of the elevated topography, the peak concentration value in the presence of hill is obtained at shorter distance when compared with the other case. The peak ground level concentration value found in the presence of hill is relatively higher; however, for the population residing at farther distances, the additional dilution provided by the hill reduces the ground level concentration. (author)

  5. Mathematical Chemistry

    OpenAIRE

    Trinajstić, Nenad; Gutman, Ivan

    2002-01-01

    A brief description is given of the historical development of mathematics and chemistry. A path leading to the meeting of these two sciences is described. An attempt is made to define mathematical chemistry, and journals containing the term mathematical chemistry in their titles are noted. In conclusion, the statement is made that although chemistry is an experimental science aimed at preparing new compounds and materials, mathematics is very useful in chemistry, among other things, to produc...

  6. Radiochemistry Division annual progress report: 1994

    International Nuclear Information System (INIS)

    The research and development activities of Radiochemistry Division during 1994 are briefly described under the headings: (i) nuclear chemistry; (ii) actinide chemistry; (iii) spectroscopy and (iv) instrumentation. Nuclear chemistry work deals with the areas of nuclear reactions, nuclear fission, nuclear spectroscopy, nuclear data measurements, neutron activation analysis and positron annihilation spectroscopy. The research programme in actinide chemistry deals mainly with the complexation of the actinides, lanthanides and fission products from aqueous media with organic reagents such as amides, diamides, HTTA, CMPO, BEHSO and macrocyclic ligands. Spectroscopic studies include electron paramagnetic resonance investigations of actinide and other compounds, investigation of role of radiation induced radical ions in the thermoluminescence of actinide/lanthanide doped phosphors and development of analytical methods for the determination of metallic impurities in plutonium, uranium, thorium oxide and yttrium aluminium garnet matrices. A sinusoidal waveform generator for facilitating electrochemical etching of nuclear tracks and an IBM PC/AT based data station for the IR spectrophotometer were developed by the instrumentation group. A list of publications, numbering 107, by the Scientific staff of the Division is also included in the report. (author). refs., 32 tabs., 31 figs

  7. Radiochemistry Division: Annual progress report for 1981

    International Nuclear Information System (INIS)

    The progress report of the Radiochemistry Division of Bhabha Atomic Research Centre presents the research and development work carried out during 1981 in the form of individual summaries arranged under the headings: reactor fuel chemistry, heavy element chemistry, radioanalytical chemistry, and nuclear chemistry. Some of the highlights of the work are: (1) modification of the gelation set-up for making plutonium containing gel particles to get better yields of (U,Pu)O2 containing up to 15% of plutonium, (2) studies on solvent extraction of Am(III), Cm(III), Bk(III) and Cf(III) by 1-phenyl-2-methyl-4-benzoyl pyrazolone-5 (HPMBP), (3) study of the radiation chemistry and photochemistry of aqueous solutions of plutonium, (4) study of crystal structure of uranyl oxalate and sulphates, (5) ESR study, thermoluminescence and spectral studies of americium doped SrSO4, phosphors, (6) determination of uranium and plutonium by spectrophotometry, mass spectroscopy and alpha spectroscopy, (7) determination of isotopic ratios of plutonium isotopes by gamma spectroscopy, (8) studies on several aspects of fission chemistry of 229Th and 252Cf, and (9) fabrication of a neutron well coincidence counter. (M.G.B.)

  8. The ACS-NUCL Division 50th Anniversary: Introduction

    Energy Technology Data Exchange (ETDEWEB)

    Hobart, David E. [Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

    2016-01-10

    The ACS Division of Nuclear Chemistry and Technology was initiated in 1955 as a subdivision of the Division of Industrial and Engineering Chemistry. Probationary divisional status was lifted in 1965. The Division’s first symposium was held in Denver in 1964 and it is fitting that we kicked-off the 50th Anniversary in Denver in the spring of 2015. Listed as a small ACS Division with only about 1,000 members, NUCL’s impact over the past fifty years has been remarkable. National ACS meetings have had many symposia sponsored or cosponsored by NUCL that included Nobel Laureates, U.S. Senators, other high-ranking officials and many students as speakers. The range of subjects has been exceptional as are the various prestigious awards established by the Division. Of major impact has been the past 30 years of the NUCL Nuclear Chemistry Summer Schools to help fill the void of qualified nuclear scientists and technicians. In celebrating the 50th Anniversary we honor the past, celebrate the present and shape the future of the Division and nuclear science and technology. To celebrate this auspicious occasion a commemorative lapel pin has been designed for distribution to NUCL Division members.

  9. Radiation 2006. In association with the Polymer Division, Royal Australian Chemical Institute. Incorporating the 21st AINSE Radiation Chemistry Conference and the 18th Radiation Biology Conference, conference handbook

    International Nuclear Information System (INIS)

    Full text: Tumour modelling has the potential to assist in cancer treatment planning, by providing clinicians with patient specific predictions of treatment outcome. By implementing different radiotherapy (RT) schedules on a model, differential treatment outcome in terms of cell kill may be predicted. With the ability to assign a cell as either oxic, transiently hypoxic (temporal oxygen variations) or chronically hypoxic, the current model uniquely integrates the phenomenon of radiobiological hypoxia, which has been proven to a macroscopic tumour parameters with prognostic value, as seen in multiple HNSCC clinical trials. Features of the tumour growth model will be presented, along with a sensitivity analysis of the growth rate versus interchangeable parameters such as the random seed number, proportion of cells types etc. This will be followed by a justification and description of the hypoxia modelling technique. The in-silico model is programmed in the FORTRAN 95 language and is dedicated to squamous cell carcinoma of the head and neck (HNSCC) region. Each cell is declared as an object and possesses attributes which are stored as integers. The five attribute values are randomly selected from various distributions and stored for each cell. The attributes include; cell cycle time, the time of division, cell type, number of generations and pO2, which are condensed in to 6 bytes of memory space. In addition, the algorithm has been designed to incorporate a partial oxygen pressure (pO2) to mimic the microenvironment of each cell. The temporal characteristics of transient hypoxia considered have been taken from published literature. Cells are processed at a rate of 50,000 cells per second and using a symmetrical stem cell division probability of 2.5 %, tumour is developed with a doubling time of 45 days and a stem cell population of 1.6 % (values reported in the literature). A sensitivity analysis shows that the percentage probability of stem cell creation is the

  10. Underwater Sound Reference Division

    Data.gov (United States)

    Federal Laboratory Consortium — The Underwater Sound Reference Division (USRD) serves as the U.S. standardizing activity in the area of underwater acoustic measurements, as the National Institute...

  11. Theoretical physics division

    International Nuclear Information System (INIS)

    Research activities of the theoretical physics division for 1979 are described. Short summaries are given of specific research work in the following fields: nuclear structure, nuclear reactions, intermediate energy physics, elementary particles

  12. Progress report 1983-1984 Reactor Chemistry Department

    International Nuclear Information System (INIS)

    Description of the activity developed by the Reactor Chemistry Department of the National Atomic Energy Commission during the period 1983-1984 in its four divisions: Chemical Control; Moderator and Refrigerant Chemistry; Radiation Chemistry and Nuclear Power Plant's Service. A list of the publications made by the personnel during this period is also included. (M.E.L.)

  13. Des divisions aux alternances

    Directory of Open Access Journals (Sweden)

    Eric Clemens

    2012-12-01

    Full Text Available - From the divisions to the alternations - Society, action and common good give sense to democracy. Society is in fact a set of unmitigated divisions (horizontal and vertical, material and symbolic. Democratic action, since the discourse’s conflicts, doesn’t change the human beings, but things between they, in the alternation of power’s institutions for our only good in common: the body. With this aim, the Basic Income Earth Network is necessary.

  14. Chemical Technology Division annual technical report, 1986

    Energy Technology Data Exchange (ETDEWEB)

    1987-06-01

    Highlights of the Chemical Technology (CMT) Division's activities during 1986 are presented. In this period, CMT conducted research and development in areas that include the following: (1) high-performance batteries - mainly lithium-alloy/metal sulfide and sodium/sulfur; (2) aqueous batteries (lead-acid, nickel/iron, etc.); (3) advanced fuel cells with molten carbonate or solid oxide electrolytes; (4) coal utilization, including the heat and seed recovery technology for coal-fired magnetohydrodynamics plants, the technology for fluidized-bed combustion, and a novel concept for CO/sub 2/ recovery from fossil fuel combustion; (5) methods for recovery of energy from municipal waste; (6) methods for the electromagnetic continuous casting of steel sheet; (7) techniques for treatment of hazardous waste such as reactive metals and trichloroethylenes; (8) nuclear technology related to waste management, a process for separating and recovering transuranic elements from nuclear waste, and the recovery processes for discharged fuel and the uranium blanket in a sodium-cooled fast reactor; and (9) physical chemistry of selected materials in environments simulating those of fission and fusion energy systems. The Division also has a program in basic chemistry research in the areas of catalytic hydrogenation and catalytic oxidation; materials chemistry for associated and ordered solutions at high temperatures; interfacial processes of importance to corrosion science, surface science, and catalysis; the thermochemistry of zeolites and related silicates; and the geochemical processes responsible for trace-element migration within the earth's crust. The Division continued to be the major user of the technical support provided by the Analytical Chemistry Laboratory at ANL. 127 refs., 71 figs., 8 tabs.

  15. Chemical Technology Division annual technical report 1989

    Energy Technology Data Exchange (ETDEWEB)

    1990-03-01

    Highlights of the Chemical Technology (CMT) Division's activities during 1989 are presented. In this period, CMT conducted research and development in the following areas: (1) electrochemical technology, including high-performance batteries (mainly lithium/iron sulfide and sodium/metal chloride), aqueous batteries (lead-acid and nickel/iron), and advanced fuel cells with molten carbonate and solid oxide electrolytes: (2) coal utilization, including the heat and seed recovery technology for coal-fired magnetohydrodynamics plants and the technology for fluidized-bed combustion; (3) methods for recovery of energy from municipal waste and techniques for treatment of hazardous organic waste; (4) nuclear technology related to a process for separating and recovering transuranic elements from nuclear waste and for producing {sup 99}Mo from low-enriched uranium targets, the recovery processes for discharged fuel and the uranium blanket in a sodium-cooled fast reactor (the Integral Fast Reactor), and waste management; and (5) physical chemistry of selected materials in environments simulating those of fission and fusion energy systems. The Division also has a program in basic chemistry research in the areas of fluid catalysis for converting small molecules to desired products; materials chemistry for superconducting oxides and associated and ordered solutions at high temperatures; interfacial processes of importance to corrosion science, high-temperature superconductivity, and catalysis; and the geochemical processes responsible for trace-element migration within the earth's crust. The Division continued to be administratively responsible for and the major user of the Analytical Chemistry Laboratory at Argonne National Laboratory (ANL).

  16. Chemical technology division: Annual technical report 1987

    Energy Technology Data Exchange (ETDEWEB)

    1988-05-01

    Highlights of the Chemical Technology (CMT) Division's activities during 1987 are presented. In this period, CMT conducted research and development in the following areas: (1) high-performance batteries--mainly lithium-alloy/metal sulfide and sodium/sulfur; (2) aqueous batteries (lead-acid, nickel/iron, etc.); (3) advanced fuel cells with molten carbonate or solid oxide electrolytes; (4) coal utilization, including the heat and seed recovery technology for coal-fired magnetohydrodynamics plants and the technology for fluidized-bed combustion; (5) methods for the electromagnetic continuous casting of steel sheet and for the purification of ferrous scrap; (6) methods for recovery of energy from municipal waste and techniques for treatment of hazardous organic waste; (7) nuclear technology related to a process for separating and recovering transuranic elements from nuclear waste, the recovery processes for discharged fuel and the uranium blanket in a sodium-cooled fast reactor, and waste management; and (8) physical chemistry of selected materials in environments simulating those of fission and fusion energy systems. The Division also has a program in basic chemistry research in the areas of fluid catalysis for converting small molecules to desired products; materials chemistry for liquids and vapors at high temperatures; interfacial processes of importance to corrosion science, high-temperature superconductivity, and catalysis; the thermochemistry of various minerals; and the geochemical processes responsible for trace-element migration within the earth's crust. The Division continued to be the major user of the technical support provided by the Analytical Chemistry Laboratory at ANL. 54 figs., 9 tabs.

  17. Chemical Technology Division annual technical report, 1988

    International Nuclear Information System (INIS)

    Highlights of the Chemical Technology (CMT) Divisions's activities during 1988 are presented. In this period, CMT conducted research and development in the following areas: (1) high-performance batteries (mainly lithium-alloy/metal sulfide, sodium/metal chloride, and sodium/sulfur); (2) aqueous batteries (lead-acid, nickel/iron, etc.); (3) advanced fuel cells with molten carbonate or solid oxide electrolytes; (4) coal utilization, including the heat and seed recovery technology for coal-fired magnetohydrodynamics plants and the technology for fluidized-bed combustion; (5) methods for recovery of energy from municipal waste and techniques for treatment of hazardous chemical water; (6) nuclear technology related to a process for separating and recovering transuranic elements from nuclear waste and for producing /sup 99/Mo from low-enriched uranium targets, the recovery processes for discharged fuel and the uranium blanket in a sodium-cooled fast reactor, and waste management; and (7) physical chemistry of selected materials in environments simulating those of fission and fusion energy systems. The Division also has a program in basic chemistry research in the areas of fluid catalysis for converting small molecules to desired products; materials chemistry for superconducting oxides and associated and ordered solutions at high temperatures; interfacial processes of importance to corrosion science, high-temperature superconductivity, and catalysis; and the geochemical processes responsible for trace-element migration within the earth's crust. The Division continued to be the major user of the technical support provided by the Analytical Chemistry Laboratory at ANL. 53 figs., 16 tabs

  18. Chemical technology division: Annual technical report 1987

    International Nuclear Information System (INIS)

    Highlights of the Chemical Technology (CMT) Division's activities during 1987 are presented. In this period, CMT conducted research and development in the following areas: (1) high-performance batteries--mainly lithium-alloy/metal sulfide and sodium/sulfur; (2) aqueous batteries (lead-acid, nickel/iron, etc.); (3) advanced fuel cells with molten carbonate or solid oxide electrolytes; (4) coal utilization, including the heat and seed recovery technology for coal-fired magnetohydrodynamics plants and the technology for fluidized-bed combustion; (5) methods for the electromagnetic continuous casting of steel sheet and for the purification of ferrous scrap; (6) methods for recovery of energy from municipal waste and techniques for treatment of hazardous organic waste; (7) nuclear technology related to a process for separating and recovering transuranic elements from nuclear waste, the recovery processes for discharged fuel and the uranium blanket in a sodium-cooled fast reactor, and waste management; and (8) physical chemistry of selected materials in environments simulating those of fission and fusion energy systems. The Division also has a program in basic chemistry research in the areas of fluid catalysis for converting small molecules to desired products; materials chemistry for liquids and vapors at high temperatures; interfacial processes of importance to corrosion science, high-temperature superconductivity, and catalysis; the thermochemistry of various minerals; and the geochemical processes responsible for trace-element migration within the earth's crust. The Division continued to be the major user of the technical support provided by the Analytical Chemistry Laboratory at ANL. 54 figs., 9 tabs

  19. Chemical Technology Division annual technical report, 1986

    International Nuclear Information System (INIS)

    Highlights of the Chemical Technology (CMT) Division's activities during 1986 are presented. In this period, CMT conducted research and development in areas that include the following: (1) high-performance batteries - mainly lithium-alloy/metal sulfide and sodium/sulfur; (2) aqueous batteries (lead-acid, nickel/iron, etc.); (3) advanced fuel cells with molten carbonate or solid oxide electrolytes; (4) coal utilization, including the heat and seed recovery technology for coal-fired magnetohydrodynamics plants, the technology for fluidized-bed combustion, and a novel concept for CO2 recovery from fossil fuel combustion; (5) methods for recovery of energy from municipal waste; (6) methods for the electromagnetic continuous casting of steel sheet; (7) techniques for treatment of hazardous waste such as reactive metals and trichloroethylenes; (8) nuclear technology related to waste management, a process for separating and recovering transuranic elements from nuclear waste, and the recovery processes for discharged fuel and the uranium blanket in a sodium-cooled fast reactor; and (9) physical chemistry of selected materials in environments simulating those of fission and fusion energy systems. The Division also has a program in basic chemistry research in the areas of catalytic hydrogenation and catalytic oxidation; materials chemistry for associated and ordered solutions at high temperatures; interfacial processes of importance to corrosion science, surface science, and catalysis; the thermochemistry of zeolites and related silicates; and the geochemical processes responsible for trace-element migration within the earth's crust. The Division continued to be the major user of the technical support provided by the Analytical Chemistry Laboratory at ANL. 127 refs., 71 figs., 8 tabs

  20. Environmental Research Division technical progress report: January 1986--October 1987

    International Nuclear Information System (INIS)

    Technical process in the various research activities of Argonne National Laboratory's Environmental Research Division is reported for the period 1986-1987. Textual, graphic, and tabular information is used to briefly summarize (in separate chapters) the work of the Division's Atmospheric Physics, Environmental Effects Research, Fundamental Molecular Physics and Chemistry, and Organic Geochemistry and Environmental Instrumentation Programs. Information on professional qualifications, awards, and outstanding professional activities of staff members, as well as lists of publications, oral presentations, special events organized, and participants in educational programs, are provided in appendices at the end of each chapter. Individual projects under each division are processed separately for the data bases

  1. Environmental Research Division technical progress report: January 1986--October 1987

    Energy Technology Data Exchange (ETDEWEB)

    1988-07-01

    Technical process in the various research activities of Argonne National Laboratory's Environmental Research Division is reported for the period 1986-1987. Textual, graphic, and tabular information is used to briefly summarize (in separate chapters) the work of the Division's Atmospheric Physics, Environmental Effects Research, Fundamental Molecular Physics and Chemistry, and Organic Geochemistry and Environmental Instrumentation Programs. Information on professional qualifications, awards, and outstanding professional activities of staff members, as well as lists of publications, oral presentations, special events organized, and participants in educational programs, are provided in appendices at the end of each chapter. Individual projects under each division are processed separately for the data bases.

  2. Chemistry {ampersand} Materials Science progress report summary of selected research and development topics, FY97

    Energy Technology Data Exchange (ETDEWEB)

    Newkirk, L.

    1997-12-01

    This report contains summaries of research performed in the Chemistry and Materials Science division. Topics include Metals and Ceramics, High Explosives, Organic Synthesis, Instrument Development, and other topics.

  3. Combinatorial chemistry

    DEFF Research Database (Denmark)

    Nielsen, John

    1994-01-01

    An overview of combinatorial chemistry is presented. Combinatorial chemistry, sometimes referred to as `irrational drug design,' involves the generation of molecular diversity. The resulting chemical library is then screened for biologically active compounds.......An overview of combinatorial chemistry is presented. Combinatorial chemistry, sometimes referred to as `irrational drug design,' involves the generation of molecular diversity. The resulting chemical library is then screened for biologically active compounds....

  4. Positronium chemistry

    CERN Document Server

    Green, James

    1964-01-01

    Positronium Chemistry focuses on the methodologies, reactions, processes, and transformations involved in positronium chemistry. The publication first offers information on positrons and positronium and experimental methods, including mesonic atoms, angular correlation measurements, annihilation spectra, and statistical errors in delayed coincidence measurements. The text then ponders on positrons in gases and solids. The manuscript takes a look at the theoretical chemistry of positronium and positronium chemistry in gases. Topics include quenching, annihilation spectrum, delayed coincidence

  5. BARC golden jubilee and DAE-BRNS life sciences symposium 2006 on trends in research and technologies in agriculture and food sciences: abstracts

    International Nuclear Information System (INIS)

    Better methods of agricultural production, availability of hybrid and mutant varieties of crop plants, irrigation, fertilizers and pesticides have all helped boost up agricultural production, and famines and droughts remain restricted to a few pockets in the world. Innovative approach to step up agricultural production, especially of food crops symbolize synergy and synthesis of conventional and mutation breeding aided by modern biotechnological tools like DNA markers and gene manipulation in tune with the policy of environmental and soil conservation. It has increased the production of oil seeds in India during the last decade with a shift from groundnut and mustard to soybean and sunflower. Bhabha Atomic Research Centre (BARC), Mumbai which has strongly pursued the important societal programmes using nuclear technology in agriculture and health, has made a very significant impact on the country's agriculture by developing 27 new crop varieties mostly of oil seeds and pulses. Further, radiation processing of food, pioneered in India by BARC, is now gaining global acceptance and has opened new vistas for agriculture exports. The present symposium is dedicated to trends in research of technologies in agriculture and food sciences. The papers relevant to INIS are indexed separately

  6. 78 FR 4464 - Proposal Review Panel for Chemistry; Notice of Meeting

    Science.gov (United States)

    2013-01-22

    ..., Program Director, Centers for Chemical Innovation Program, Division of Chemistry, Room 1055, National... From the Federal Register Online via the Government Publishing Office NATIONAL SCIENCE FOUNDATION Proposal Review Panel for Chemistry; Notice of Meeting In accordance with the Federal Advisory...

  7. Chemical Technology Division Annual Report 2000

    International Nuclear Information System (INIS)

    The Chemical Technology Division (CMT) is one of eight engineering research divisions within Argonne National Laboratory (ANL), one of the U.S. government's oldest and largest research laboratories. The University of Chicago oversees the laboratory on behalf of the U.S. Department of Energy (DOE). Argonne's mission is to conduct basic scientific research, to operate national scientific facilities, to enhance the nation's energy resources, and to develop better ways to manage environmental problems. Argonne has the further responsibility of strengthening the nation's technology base through developing industrial technology and transferring that technology to industry. The Chemical Technology Division is a diverse early-stage engineering organization, specializing in the treatment of spent nuclear fuel, development of advanced power sources, and management of both high- and low-level nuclear wastes. Although this work is often indistinguishable from basic research, our efforts are directed toward the practical devices and processes that are covered by ANL's mission. Additionally, the Division operates the Analytical Chemistry Laboratory, which provides a broad range of analytical services to ANL and other organizations. The Division is multi-disciplinary. Its people have formal training as ceramists; physicists; material scientists; electrical, mechanical, chemical, and nuclear engineers; and chemists. They have experience working in academia, urban planning, and the petroleum, aluminum, and automotive industries. Their skills include catalysis, ceramics, electrochemistry, metallurgy, nuclear magnetic resonance spectroscopy, and petroleum refining, as well as the development of nuclear waste forms, batteries, and high-temperature superconductors. In this annual report we present an overview of the technical programs together with representative highlights. The report is not intended to be comprehensive or encyclopedic, but to serve as an indication of the condition

  8. Chemical Technology Division annual technical report, 1990

    Energy Technology Data Exchange (ETDEWEB)

    1991-05-01

    Highlights of the Chemical Technology (CMT) Division's activities during 1990 are presented. In this period, CMT conducted research and development in the following areas: (1) electrochemical technology, including advanced batteries and fuel cells; (2) technology for coal- fired magnetohydrodynamics and fluidized-bed combustion; (3) methods for recovery of energy from municipal waste and techniques for treatment of hazardous organic waste; (4) the reaction of nuclear waste glass and spent fuel under conditions expected for a high-level waste repository; (5) processes for separating and recovering transuranic elements from nuclear waste streams, concentrating plutonium solids in pyrochemical residues by aqueous biphase extraction, and treating natural and process waters contaminated by volatile organic compounds; (6) recovery processes for discharged fuel and the uranium blanket in the Integral Fast Reactor (IFR); (7) processes for removal of actinides in spent fuel from commercial water-cooled nuclear reactors and burnup in IFRs; and (8) physical chemistry of selected materials in environments simulating those of fission and fusion energy systems. The Division also has a program in basic chemistry research in the areas of fluid catalysis for converting small molecules to desired products; materials chemistry for superconducting oxides and associated and ordered solutions at high temperatures; interfacial processes of importance to corrosion science, high-temperature superconductivity, and catalysis; and the geochemical processes responsible for trace-element migration within the earth's crust. The Analytical Chemistry Laboratory in CMT provides a broad range of analytical chemistry support services to the scientific and engineering programs at Argonne National Laboratory (ANL). 66 refs., 69 figs., 6 tabs.

  9. Chemical Technology Division annual technical report, 1990

    International Nuclear Information System (INIS)

    Highlights of the Chemical Technology (CMT) Division's activities during 1990 are presented. In this period, CMT conducted research and development in the following areas: (1) electrochemical technology, including advanced batteries and fuel cells; (2) technology for coal- fired magnetohydrodynamics and fluidized-bed combustion; (3) methods for recovery of energy from municipal waste and techniques for treatment of hazardous organic waste; (4) the reaction of nuclear waste glass and spent fuel under conditions expected for a high-level waste repository; (5) processes for separating and recovering transuranic elements from nuclear waste streams, concentrating plutonium solids in pyrochemical residues by aqueous biphase extraction, and treating natural and process waters contaminated by volatile organic compounds; (6) recovery processes for discharged fuel and the uranium blanket in the Integral Fast Reactor (IFR); (7) processes for removal of actinides in spent fuel from commercial water-cooled nuclear reactors and burnup in IFRs; and (8) physical chemistry of selected materials in environments simulating those of fission and fusion energy systems. The Division also has a program in basic chemistry research in the areas of fluid catalysis for converting small molecules to desired products; materials chemistry for superconducting oxides and associated and ordered solutions at high temperatures; interfacial processes of importance to corrosion science, high-temperature superconductivity, and catalysis; and the geochemical processes responsible for trace-element migration within the earth's crust. The Analytical Chemistry Laboratory in CMT provides a broad range of analytical chemistry support services to the scientific and engineering programs at Argonne National Laboratory (ANL). 66 refs., 69 figs., 6 tabs

  10. Chemical Technology Division annual technical report, 1992

    International Nuclear Information System (INIS)

    In this period, CMT conducted research and development in the following areas: (1) electrochemical technology, including advanced batteries and fuel cells; (2) technology for fluidized-bed combustion and coal-fired magnetohydrodynamics; (3) methods for treatment of hazardous waste, mixed hazardous/radioactive waste, and municipal solid waste; (4) the reaction of nuclear waste glass and spent fuel under conditions expected for an unsaturated repository; (5) processes for separating and recovering transuranic elements from nuclear waste streams, treating water contaminated with volatile organics, and concentrating radioactive waste streams; (6) recovery processes for discharged fuel and the uranium blanket in the Integral Fast Reactor (EFR); (7) processes for removal of actinides in spent fuel from commercial water-cooled nuclear reactors and burnup in IFRs; and (8) physical chemistry of selected materials (corium; Fe-U-Zr, tritium in LiAlO2 in environments simulating those of fission and fusion energy systems. The Division also conducts basic research in catalytic chemistry associated with molecular energy resources and novel' ceramic precursors; materials chemistry of superconducting oxides, electrified metal/solution interfaces, and molecular sieve structures; and the geochemical processes involved in water-rock interactions occurring in active hydrothermal systems. In addition, the Analytical Chemistry Laboratory in CMT provides a broad range of analytical chemistry support services to the technical programs at Argonne National Laboratory (ANL)

  11. Radiochemistry Division annual progress report for 1979

    International Nuclear Information System (INIS)

    The research and development (R and D) activities of the Radiochemistry Division of the Bhabha Atomic Research Centre, Bombay, during 1979 are reported in the form of individual summaries under the headings: reactor chemistry, heavy element chemistry, radioanalytical chemistry and services, nuclear chemistry, and instrumentation. Some of the highlights of the R and D activities are: (1) studies on the solvent extraction of actinides, (2) work on the preparation of UO2 microspheres of 600 μm and 100 μm size by sol-gel process, (3) studies on structural chemistry of uranium compounds and plutonium compounds, (4) development of alpha spectroscopic method of determination of plutonium and americium, (5) studies on charge distribution, mass distribution and mass yield in fission, (6) determination of half life of actinide isotopes, and (7) studies on solid state nuclear track detectors - threshold, etching, and applications. A list of publications i.e. papers published during 1979 in journals, papers presented at conferences, symposia, etc. and reports is also given. (M.G.B.)

  12. Chemical Technology Division annual technical report, 1992

    Energy Technology Data Exchange (ETDEWEB)

    Battles, J.E.; Myles, K.M.; Laidler, J.J.; Green, D.W.

    1993-06-01

    In this period, CMT conducted research and development in the following areas: (1) electrochemical technology, including advanced batteries and fuel cells; (2) technology for fluidized-bed combustion and coal-fired magnetohydrodynamics; (3) methods for treatment of hazardous waste, mixed hazardous/radioactive waste, and municipal solid waste; (4) the reaction of nuclear waste glass and spent fuel under conditions expected for an unsaturated repository; (5) processes for separating and recovering transuranic elements from nuclear waste streams, treating water contaminated with volatile organics, and concentrating radioactive waste streams; (6) recovery processes for discharged fuel and the uranium blanket in the Integral Fast Reactor (EFR); (7) processes for removal of actinides in spent fuel from commercial water-cooled nuclear reactors and burnup in IFRs; and (8) physical chemistry of selected materials (corium; Fe-U-Zr, tritium in LiAlO{sub 2} in environments simulating those of fission and fusion energy systems. The Division also conducts basic research in catalytic chemistry associated with molecular energy resources and novel` ceramic precursors; materials chemistry of superconducting oxides, electrified metal/solution interfaces, and molecular sieve structures; and the geochemical processes involved in water-rock interactions occurring in active hydrothermal systems. In addition, the Analytical Chemistry Laboratory in CMT provides a broad range of analytical chemistry support services to the technical programs at Argonne National Laboratory (ANL).

  13. Radiation 2006. In association with the Polymer Division, Royal Australian Chemical Institute. Incorporating the 21st AINSE Radiation Chemistry Conference and the 18th Radiation Biology Conference, conference handbook

    International Nuclear Information System (INIS)

    Full text: The reversible addition fragmentation chain transfer (RAFT) process is a controlled/'living' free radical polymerisation process that was invented in Australia by the Commonwealth Scientific and Industrial Research Organisation (CSRIO) group led by Ezio Rizzardo. RAFT polymerisation has proven to be a powerful tool for the synthesis of polymers with predetermined molecular weight and low polydispersity. The RAFT process is capable of effecting living free radical polymerisation control over a great variety of monomers (eg (meth)acrylates, styrenes, acrylamides, vinyl acetate). The RAFT technique uses thiocarbonylthio compounds to mediate the polymerisation via a reversible chain transfer process. This leads to the establishment of an equilibrium under which all the propagating chains have approximately the same chain length at the same instant of time. The RAFT agent typically possesses a thiocarbonylthio group (S=C-S) with substituents R (radical leaving group) and Z (activating/stabilising group), which govern the reaction kinetics and the degree of structural control. In 2001, we reported the synthesis of RAFT agents (phenyl dithio acetates) that can be applied at low/ambient temperatures in the polymerization of alkyl acrylates and styrene. Low/ambient temperature RAFT agents allow the application of γ-radiation as source of initiation. The combination of γ-radiation and ambient temperature RAFT agents allows performing living polymerization at ambient temperature up to high conversions. This technique also opens the possibility to graft narrow polydisperse polymers from existing polymer surfaces. We have applied RAFT polymerization in conjunction with γ-radiation to graft various monomers (e.g. styrene, m-isopropenyl-α,α'-dimethylbenzyl isocyanate (TMI), N,N'-dimethyl acrylamide) from solid polypropylene phases that can be used for applications in combinatorial chemistry (eg peptide synthesis and scavenger reactions)

  14. Theoretical Division progress report

    International Nuclear Information System (INIS)

    This report presents highlights of activities in the Theoretical (T) Division from October 1976-January 1979. The report is divided into three parts. Part I presents an overview of the Division: its unique function at the Los Alamos Scientific Laboratory (LASL) and within the scientific community as a whole; the organization of personnel; the main areas of research; and a survey of recent T-Division initiatives. This overview is followed by a survey of the 13 groups within the Division, their main responsibilities, interests, and expertise, consulting activities, and recent scientific accomplisments. The remainder of the report, Parts II and III, is devoted to articles on selected research activities. Recent efforts on topics of immediate interest to energy and weapons programs at LASL and elsewhere are described in Part II, Major National Programs. Separate articles present T-Divison contributions to weapons research, reactor safety and reactor physics research, fusion research, laser isotope separation, and other energy research. Each article is a compilation of independent projects within T Division, all related to but addressing different aspects of the major program. Part III is organized by subject discipline, and describes recent scientific advances of fundamental interest. An introduction, defining the scope and general nature of T-Division efforts within a given discipline, is followed by articles on the research topics selected. The reporting is done by the scientists involved in the research, and an attempt is made to communicate to a general audience. Some data are given incidentally; more technical presentations of the research accomplished may be found among the 47 pages of references. 110 figures, 5 tables

  15. BARC highlights 1991

    International Nuclear Information System (INIS)

    Some of the important research and development (R and D) activities carried out at the Centre during the last two or three years are described in brief. The descriptions are arranged under the headings : Physical Sciences, Chemical Sciences, Material and Materials Science, Radioisotopes, Reactors, Fuel Cycle, Radiological Safety and Protection, Electronics and Instrumentation, Engineering Services, and Life Sciences. The text is illustrated with a number of photographs - some of them coloured. (M.G.B.)

  16. BARC annual report 1987

    International Nuclear Information System (INIS)

    The report summarises the Research and Development (R and D) activities of the Bhabha Atomic Research Centre, Bombay, during 1987. These R and D activities are described in the chapters entitled: Physical Sciences, Chemical S ciences, Materials and Materials Sciences, Radioisotopes, Reactors, Fuel Cycle, Radiological Safety and Protection, Electronics and Instrumentation, Engineering Services, and Life Sciences. Activities in the fields of remote handling and robotics, technology transfer, and auxiliary activities like technical information, human resources and development etc. are dealt in the chapter entitled General. At the end of each chapter, a list of publications by the scientists in the corresp onding subject field is given. Some of the major highlights of the work during 1987 are: (1) DHRUVA reactor became fully operational at its rated capacity making neutrons available for isotope production and studies in neutron scattering and condensed matter, (2) R and D activities were extended to study h igh temperature superconductivity in both fundamental and applied aspects and (3) a laboratory for production of 32P-biomolecules was set up at the Centre for Cellular and Molecular Biology at Hyderabad. (M.G.B.)

  17. On infinitely divisible semimartingales

    DEFF Research Database (Denmark)

    Basse-O'Connor, Andreas; Rosiński, Jan

    2015-01-01

    by a random measure admits a unique decomposition into an independent increment process and an infinitely divisible process of finite variation. Consequently, the natural analog of Stricker's theorem holds for all strictly representable processes (as defined in this paper). Since Gaussian processes...... are strictly representable due to Hida's multiplicity theorem, the classical Stricker's theorem follows from our result. Another consequence is that the question when an infinitely divisible process is a semimartingale can often be reduced to a path property, when a certain associated infinitely...

  18. Chemical Technology Division. Annual technical report, 1995

    Energy Technology Data Exchange (ETDEWEB)

    Laidler, J.J.; Myles, K.M.; Green, D.W.; McPheeters, C.C.

    1996-06-01

    Highlights of the Chemical Technology (CMT) Division`s activities during 1995 are presented. In this period, CMT conducted research and development in the following areas: (1) electrochemical technology, including advanced batteries and fuel cells; (2) methods for treatment of hazardous waste and mixed hazardous/radioactive waste; (3) the reaction of nuclear waste glass and spent fuel under conditions expected for an unsaturated repository; (4) processes for separating and recovering selected elements from waste streams, concentrating low-level radioactive waste streams with advanced evaporator technology, and producing {sup 99}Mo from low-enriched uranium; (5) electrometallurgical treatment of different types of spent nuclear fuel in storage at Department of Energy sites; and (6) physical chemistry of selected materials in environments simulating those of fission and fusion energy systems.

  19. Radiochemistry Division: triennial progress report (for) 1983-1985

    International Nuclear Information System (INIS)

    The present report includes contributions pertaining to the studies of nuclear and chemical properties of actinides. These studies have been mostly concerned with the basic investigation, besides the research and development work connected with chemical quality control of plutonium-based fuels for trace metallic constituents. The nuclear properties are being studied in the Nuclear Chemistry and Instrumentation Section while the chemical properties are being studied in the Actinide Chemistry Section and the Spectroscopy Section. The work in the Actinide Chemistry Section deals essentially with properties of ions in solutions and preparation of solid compounds, to understand the complexing behaviour of actinides. The work in the Spectroscopy Section is concerned essentially with the study of actinide solids using EPR, TSL and optical spectroscopic techniques. The considerable advances made in the basic study of actinides are reflected in the number of publications in well-known international journals. The research and development work of the Division is fully supported by Instrumentation Group of the Division which looks after the maintenance of instruments of not only the Radiochemistry Division but also the Fuel Chemistry Division and design and fabrication of special electronic instruments needed for the research and development work. (author)

  20. Symposium on high temperature and materials chemistry

    Energy Technology Data Exchange (ETDEWEB)

    1989-10-01

    This volume contains the written proceedings of the Symposium on High Temperature and Materials Chemistry held in Berkeley, California on October 24--25, 1989. The Symposium was sponsored by the Materials and Chemical Sciences Division of Lawrence Berkeley Laboratory and by the College of Chemistry of the University of California at Berkeley to discuss directions, trends, and accomplishments in the field of high temperature and materials chemistry. Its purpose was to provide a snapshot of high temperature and materials chemistry and, in so doing, to define status and directions.

  1. Symposium on high temperature and materials chemistry

    International Nuclear Information System (INIS)

    This volume contains the written proceedings of the Symposium on High Temperature and Materials Chemistry held in Berkeley, California on October 24--25, 1989. The Symposium was sponsored by the Materials and Chemical Sciences Division of Lawrence Berkeley Laboratory and by the College of Chemistry of the University of California at Berkeley to discuss directions, trends, and accomplishments in the field of high temperature and materials chemistry. Its purpose was to provide a snapshot of high temperature and materials chemistry and, in so doing, to define status and directions

  2. Anticrossproducts and cross divisions.

    Science.gov (United States)

    de Leva, Paolo

    2008-01-01

    This paper defines, in the context of conventional vector algebra, the concept of anticrossproduct and a family of simple operations called cross or vector divisions. It is impossible to solve for a or b the equation axb=c, where a and b are three-dimensional space vectors, and axb is their cross product. However, the problem becomes solvable if some "knowledge about the unknown" (a or b) is available, consisting of one of its components, or the angle it forms with the other operand of the cross product. Independently of the selected reference frame orientation, the known component of a may be parallel to b, or vice versa. The cross divisions provide a compact and insightful symbolic representation of a family of algorithms specifically designed to solve problems of such kind. A generalized algorithm was also defined, incorporating the rules for selecting the appropriate kind of cross division, based on the type of input data. Four examples of practical application were provided, including the computation of the point of application of a force and the angular velocity of a rigid body. The definition and geometrical interpretation of the cross divisions stemmed from the concept of anticrossproduct. The "anticrossproducts of axb" were defined as the infinitely many vectors x(i) such that x(i)xb=axb. PMID:18423647

  3. Solid State Division

    Energy Technology Data Exchange (ETDEWEB)

    Green, P.H.; Watson, D.M. (eds.)

    1989-08-01

    This report contains brief discussions on work done in the Solid State Division of Oak Ridge National Laboratory. The topics covered are: Theoretical Solid State Physics; Neutron scattering; Physical properties of materials; The synthesis and characterization of materials; Ion beam and laser processing; and Structure of solids and surfaces. (LSP)

  4. Solid State Division

    International Nuclear Information System (INIS)

    This report contains brief discussions on work done in the Solid State Division of Oak Ridge National Laboratory. The topics covered are: Theoretical Solid State Physics; Neutron scattering; Physical properties of materials; The synthesis and characterization of materials; Ion beam and laser processing; and Structure of solids and surfaces

  5. | Division of Cancer Prevention

    Science.gov (United States)

    The Division of Cancer Prevention (DCP) conducts and supports research to determine a person's risk of cancer and to find ways to reduce the risk. This knowledge is critical to making progress against cancer because risk varies over the lifespan as genetic and epigenetic changes can transform healthy tissue into invasive cancer.

  6. Chemical Technology Division annual technical report, 2001

    International Nuclear Information System (INIS)

    The Chemical Technology Division (CMT) is one of eight engineering research divisions within Argonne National Laboratory, one of the U.S. government's oldest and largest research laboratories. The University of Chicago oversees the laboratory on behalf of the U.S. Department of Energy (DOE). Argonne's mission is to conduct basic scientific research, to operate national scientific facilities, to enhance the nation's energy resources, and to develop better ways to manage environmental problems. Argonne has the further responsibility of strengthening the nation's technology base by developing innovative technology and transferring it to industry. CMT is a diverse early-stage engineering organization, specializing in the treatment of spent nuclear fuel, development of advanced electrochemical power sources, and management of both high- and low-level nuclear wastes. Although this work is often indistinguishable from basic research, our efforts are directed toward the practical devices and processes that are covered by Argonne's mission. Additionally, the Division operates the Analytical Chemistry Laboratory and Environment, Safety, and Health Analytical Chemistry services, which provide a broad range of analytical services to Argonne and other organizations. The Division is multidisciplinary. Its people have formal training as ceramists; physicists; material scientists; electrical, mechanical, chemical, and nuclear engineers; and chemists. They have experience working in academia; urban planning; and the petroleum, aluminum, and automotive industries. Their skills include catalysis, ceramics, electrochemistry, metallurgy, nuclear magnetic resonance spectroscopy, and petroleum refining, as well as the development of nuclear waste forms, batteries, and high-temperature super-conductors. The Division's wide-ranging expertise finds ready application in solving energy and environmental problems. Division personnel are frequently called on by governmental and industrial

  7. Social Chemistry

    OpenAIRE

    Lichtfouse, Eric; Schwarzbauer, Jan; Robert, Didier

    2012-01-01

    International audience This article is both an essay to propose social chemistry as a new scientific discipline, and a preface of the book Environmental Chemistry for a Sustainable World. Environmental chemistry is a fast emerging discipline aiming at the understanding the fate of pollutants in ecosystems and at designing novel processes that are safe for ecosystems. Past pollution should be cleaned, future pollution should be predicted and avoided (Lichtfouse et al., 2005a). Such advices ...

  8. Computational chemistry

    OpenAIRE

    Truhlar, Donald G.; McKoy, Vincent

    2000-01-01

    Computational chemistry has come of age. With significant strides in computer hardware and software over the last few decades, computational chemistry has achieved full partnership with theory and experiment as a tool for understanding and predicting the behavior of a broad range of chemical, physical, and biological phenomena. The Nobel Prize award to John Pople and Walter Kohn in 1998 highlighted the importance of these advances in computational chemistry. With massively parallel computers ...

  9. Bioinorganic Chemistry

    OpenAIRE

    Bertini, Ivano; Gray, Harry B.; Lippard, Stephen J.; Valentine, Joan Selverstone

    1994-01-01

    This book covers material that could be included in a one-quarter or one-semester course in bioinorganic chemistry for graduate students and advanced undergraduate students in chemistry or biochemistry. We believe that such a course should provide students with the background required to follow the research literature in the field. The topics were chosen to represent those areas of bioinorganic chemistry that are mature enough for textbook presentation. Although each chapter presents material...

  10. Technetium chemistry

    International Nuclear Information System (INIS)

    Technetium chemistry is a young and developing field. Despite the limited knowledge of its chemistry, technetium is the workhorse for nuclear medicine. Technetium is also a significant environmental concern because it is formed as a byproduct of nuclear weapons production and fission-power generators. Development of new technetium radio-pharmaceuticals and effective environmental control depends strongly upon knowledge of basic technetium chemistry. The authors performed research into the basic coordination and organometallic chemistry of technetium and used this knowledge to address nuclear medicine and environmental applications. This is the final report of a three-year Laboratory-Directed Research and Development (LDRD) project at the Los Alamos National Laboratory (LANL)

  11. Chemical Technology Division annual technical report 1984

    International Nuclear Information System (INIS)

    In this period, CMT conducted research and development in the following areas: (1) advanced batteries - mainly lithium alloy/metal sulfide and sodium/sulfur for electric vehicles; (2) aqueous batteries - mainly improved lead-acid and nickel/iron for electric vehicles; (3) advanced fuel cells with molten carbonate or solid oxide electrolytes; (4) coal utilization, including the heat and seed recovery technology for coal-fired magnetohydrodynamic plants and the technology for pressurized fluidized-bed combustors; (5) methodologies for recovery of energy from municipal waste; (6) solid and liquid desiccants that allow moisture to be removed with a minium of energy; (7) nuclear technology related to waste management, proof of breeding for a light water reactor, and the recovery processes for discharged fuel and the uranium blanket in a sodium-cooled fast reactor; and (8) physical chemistry of selected materials in environments simulating those of fission, fusion, and other energy systems. The Division also has a program in basic chemistry research in the areas of fluid catalysis for converting abundant raw materials to desired products; materials chemistry of liquids and vapors at high temperatures; interfacial processes of importance to corrosion science, surface science, and catalysis; atmospheric chemistry, most notably SO2 oxidation mechanisms; and the thermochemistry of zeolites, related silicates, and inorganic compounds

  12. Mutation induction, evaluation and utilization for development of high yielding varieties in Indian mustard and sunflower: an overview of BARC work

    International Nuclear Information System (INIS)

    Mutation breeding programme in Indian mustard and sunflower at BARC has resulted into the development of wide spectrum of mutations for seed coat colour, chlorophyll, plant height, maturity, flower morphology, seed weight and oil content. In Indian mustard, TM1 and TM50 are high yielding yellow seed coat mutants, which were exploited in hybridisation to develop bold, yellow seed coat and high yielding genotypes. Light green leaf and variegated leaf are novel mutation in mustard. Putative mutants for drought tolerance have been isolated. Variability for zero erucic acid and zero glucosinolates genotypes have been developed in B. napus and B. juncea. In sunflower, high yielding black seed coat mutant were isolated. Extreme dwarf measuring only 11 cm is novel. Three high yielding varieties namely TM2, TM4, and TPM1 in mustard and one i.e.TAS82 in sunflower have been released for cultivation in collaboration with state agricultural universities. (author)

  13. Good chemistry

    OpenAIRE

    Petsko, Gregory A

    2004-01-01

    The subject matter in chemistry courses reflects almost nothing of the issues that chemists are interested in. It is important to formulate a set of topics - and a Medical College Admissions Test reflecting them - that would leave chemistry departments no choice but to change their teaching.

  14. Divisibility of characteristic numbers

    OpenAIRE

    Borghesi, Simone

    2009-01-01

    We use homotopy theory to define certain rational coefficients characteristic numbers with integral values, depending on a given prime number q and positive integer t. We prove the first nontrivial degree formula and use it to show that existence of morphisms between algebraic varieties for which these numbers are not divisible by q give information on the degree of such morphisms or on zero cycles of the target variety.

  15. 3. Theoretical Physics Division

    International Nuclear Information System (INIS)

    For the period September 1980 - Aug 1981, the studies in theoretical physics divisions have been compiled under the following headings: in nuclear physics, nuclear structure, nuclear reactions and intermediate energies; in particle physics, NN and NantiN interactions, dual topological unitarization, quark model and quantum chromodynamics, classical and quantum field theories, non linear integrable equations and topological preons and Grand unified theories. A list of publications, lectures and meetings is included

  16. Report of the Solid State Physics Division (July 1, 1990 to December 31, 1991)

    International Nuclear Information System (INIS)

    This is the first report summarizing the activities carried out by scientists in the recently constituted Solid State Physics Division at Bhabha Atomic Research Centre (BARC) covering the period from July 1990 to December 1991. The activities are reported in the form of individual summaries arranged under headings : Research Activities, Instrumentation, Papers published, Papers presented, Lectures, Physics colloquia, Theses and other activities. The main thrust of the research activities of the Division relates to experimental investigations of a variety of materials using microscopic scattering techniques like neutron scattering, light scattering, x-ray diffraction and related other techniques like Moessbauer Spectroscopy, calorimetry, nuclear magnetic resonance etc. During the period under review, a large number of high Tc superconductors, proteins and enzyme derivatives, micellar systems, model membranes and other complex systems have been investigated to understand their basic structural and dynamical aspects. As a result, the structure-property correlations are better appreciated, whether they relate to drug-membrane interactions or biological functions of enzymes or nature of superconductivity etc. (author). figs

  17. Report of the Nuclear Physics Division for January 1, 1988 to December 31, 1988

    International Nuclear Information System (INIS)

    The major thrust of the Nuclear Physics Division has continued to be the same as in previous years, that is, carrying out basic research in nuclear and solid state physics. The emphasis continues to be on developing as much instrumentation locally as possible. This report summarises these activities. This year (i.e. 1988) has seen the successful completion of the Medium Energy Heavy Ion Accelerator Project - under which a 14 MV Tandem Van de Graaff accelerator (14 UD pelletron accelerator) has been installed and commissioned jointly by BARC and TIFR at the TIFR campus. This facility was inaugurated on 30th December 1988 at the time of the DAE symposium on Nuclear Physics during December 27-31, 1988. Considerable developmental activity has been carried out for creating Pelletron utilisation facilities. Experimental activity at Dhruva has also increased and is expected to increase further. The report is divided into Nuclear Physics and Solid State Physics Section with a further subdivision into research work and instrument development. The report is presented in the form of summaries. At the end of the report, a list of publications by the members of the Division is also given. (orig.)

  18. Chemical and Analytical Sciences Division progress report for the period January 1, 1993--December 31, 1994

    Energy Technology Data Exchange (ETDEWEB)

    Poutsma, M.L.

    1995-06-01

    This report provides brief summaries of progress in the Chemical and Analytical Sciences Division (CASD) during 1993 and 1994. The first four chapters, which cover the research mission, are organized to mirror the major organizational units of the division and indicate the scope of the research portfolio. These divisions are the Analytical Spectroscopy Section, Nuclear and Radiochemistry Section, Organic Chemistry Section, and Physical and Materials Chemistry Section. The fifth and sixth chapters summarize the support activities within CASD that are critical for research progress. Finally, the appendices indicate the productivity and recognition of the staff in terms of various forms of external publications, professional activities, and awards.

  19. 2003 Chemical Engineering Division annual technical report

    International Nuclear Information System (INIS)

    The Chemical Engineering Division is one of six divisions within the Engineering Research Directorate at Argonne National Laboratory, one of the U.S. government's oldest and largest research laboratories. The University of Chicago oversees the laboratory on behalf of the U.S. Department of Energy (DOE). Argonne's mission is to conduct basic scientific research, to operate national scientific facilities, to enhance the nation's energy resources, to promote national security, and to develop better ways to manage environmental problems. Argonne has the further responsibility of strengthening the nation's technology base by developing innovative technology and transferring it to industry. The Division is a diverse early-stage engineering organization, specializing in the treatment of spent nuclear fuel, development of advanced electrochemical power sources, and management of both high- and low-level nuclear wastes. Additionally, the Division operates the Analytical Chemistry Laboratory, which provides a broad range of analytical services to Argonne and other organizations. The Division is multidisciplinary. Its people have formal training in chemistry; physics; materials science; and electrical, mechanical, chemical, and nuclear engineering. They are specialists in electrochemistry, ceramics, metallurgy, catalysis, materials characterization, nuclear magnetic resonance, repository science, and the nuclear fuel cycle. Our staff have experience working in and collaborating with university, industry and government research and development laboratories throughout the world. Our wide-ranging expertise finds ready application in solving energy, national security, and environmental problems. Division personnel are frequently called on by governmental and industrial organizations for advice and contributions to problem solving in areas that intersect present and past Division programs and activities. Currently, we are engaged in the development of several technologies of

  20. Division Quilts: A Measurement Model

    Science.gov (United States)

    Pratt, Sarah S.; Lupton, Tina M.; Richardson, Kerri

    2015-01-01

    As teachers seek activities to assist students in understanding division as more than just the algorithm, they find many examples of division as fair sharing. However, teachers have few activities to engage students in a quotative (measurement) model of division. Efraim Fischbein and his colleagues (1985) defined two types of whole-number…

  1. Biorepositories | Division of Cancer Prevention

    Science.gov (United States)

    Carefully collected and controlled high-quality human biospecimens, annotated with clinical data and properly consented for investigational use, are available through the Division of Cancer Prevention Biorepositories listed in the charts below. Biorepositories Managed by the Division of Cancer Prevention Biorepositories Supported by the Division of Cancer Prevention Related Biorepositories | Information about accessing biospecimens collected from DCP-supported clinical trials and projects.

  2. Radiochemistry division. Chapter 2

    International Nuclear Information System (INIS)

    In radiochemistry, the experiments made in 1976 were in the following fields: in nuclear chemistry, the study of heavy-ion reaction mechanisms of fusion and fission, quasi-elastic transfer reactions; in radiochemistry the study of the physico-chemical properties of the actinides and transuranium elements and the search for natural superheavy elements

  3. Quantum chemistry

    CERN Document Server

    Lowe, John P

    1993-01-01

    Praised for its appealing writing style and clear pedagogy, Lowe's Quantum Chemistry is now available in its Second Edition as a text for senior undergraduate- and graduate-level chemistry students. The book assumes little mathematical or physical sophistication and emphasizes an understanding of the techniques and results of quantum chemistry, thus enabling students to comprehend much of the current chemical literature in which quantum chemical methods or concepts are used as tools. The book begins with a six-chapter introduction of standard one-dimensional systems, the hydrogen atom,

  4. THE SPRINGBOK SIXTH DIVISION

    Directory of Open Access Journals (Sweden)

    Hertzog Biermann

    2012-02-01

    Full Text Available The Springbok Sixth Division was a mighty armoured force Of men whose ancestors made war in ships, on foot and horse They wrote a stirring chapter in Springbok Martial lore When they went to sunny Italy in Nineteen-Forty-Four.   They were in the Springbok First Team and their modest claim to fame Was their response to the clarion call: "Pay up and play the game!" Their duty they did nobly as their fathers did of old They proudly wore the Sixth Div flash of Springbok green and gold.

  5. Environmental Research Division technical progress report, January 1984-December 1985

    International Nuclear Information System (INIS)

    Technical progress in the various research and assessment activities of Argonne National Laboratory's Environmental Research Division is reported for the period 1984 to 1985. Textual, graphic, and tabular information is used to briefly summarize (in separate chapters) the work of the Division's Atmospheric Physics, Environmental Effects Research, Environmental Impacts, Fundamental Molecular Physics and Chemistry, and Waste Management Programs. Information on professional qualifications, awards, and outstanding professional activities of staff members, as well as lists of publications, oral presentations, special events organized, and participants in educational programs, are provided in appendices at the end of each chapter

  6. Environmental Research Division technical progress report, January 1984-December 1985

    Energy Technology Data Exchange (ETDEWEB)

    1986-05-01

    Technical progress in the various research and assessment activities of Argonne National Laboratory's Environmental Research Division is reported for the period 1984 to 1985. Textual, graphic, and tabular information is used to briefly summarize (in separate chapters) the work of the Division's Atmospheric Physics, Environmental Effects Research, Environmental Impacts, Fundamental Molecular Physics and Chemistry, and Waste Management Programs. Information on professional qualifications, awards, and outstanding professional activities of staff members, as well as lists of publications, oral presentations, special events organized, and participants in educational programs, are provided in appendices at the end of each chapter.

  7. Materials Chemistry

    CERN Document Server

    Fahlman, Bradley D

    2011-01-01

    The 2nd edition of Materials Chemistry builds on the strengths that were recognized by a 2008 Textbook Excellence Award from the Text and Academic Authors Association (TAA). Materials Chemistry addresses inorganic-, organic-, and nano-based materials from a structure vs. property treatment, providing a suitable breadth and depth coverage of the rapidly evolving materials field. The 2nd edition continues to offer innovative coverage and practical perspective throughout. After briefly defining materials chemistry and its history, seven chapters discuss solid-state chemistry, metals, semiconducting materials, organic "soft" materials, nanomaterials, and materials characterization. All chapters have been thoroughly updated and expanded with, for example, new sections on ‘soft lithographic’ patterning, ‘click chemistry’ polymerization, nanotoxicity, graphene, as well as many biomaterials applications. The polymer and ‘soft’ materials chapter represents the largest expansion for the 2nd edition. Each ch...

  8. Introductory Chemistry

    OpenAIRE

    Baron, Mark; Gonzalez-Rodriguez, Jose; Stevens, Gary; Gray, Nathan; Atherton, Thomas; Winn, Joss

    2010-01-01

    Teaching and Learning resources for the 1st Year Introductory Chemistry course (Forensic Science). 30 credits. These are Open Educational Resources (OER), made available for re-use under a Creative Commons license.

  9. Analytical chemistry

    International Nuclear Information System (INIS)

    This book is comprised of nineteen chapters, which describes introduction of analytical chemistry, experimental error and statistics, chemistry equilibrium and solubility, gravimetric analysis with mechanism of precipitation, range and calculation of the result, volume analysis on general principle, sedimentation method on types and titration curve, acid base balance, acid base titration curve, complex and firing reaction, introduction of chemical electro analysis, acid-base titration curve, electrode and potentiometry, electrolysis and conductometry, voltammetry and polarographic spectrophotometry, atomic spectrometry, solvent extraction, chromatograph and experiments.

  10. Cluster Chemistry

    Institute of Scientific and Technical Information of China (English)

    2011-01-01

    @@ Cansisting of eight scientists from the State Key Laboratory of Physical Chemistry of Solid Surfaces and Xiamen University, this creative research group is devoted to the research of cluster chemistry and creation of nanomaterials.After three-year hard work, the group scored a series of encouraging progresses in synthesis of clusters with special structures, including novel fullerenes, fullerene-like metal cluster compounds as well as other related nanomaterials, and their properties study.

  11. Green Chemistry

    Energy Technology Data Exchange (ETDEWEB)

    Collison, Melanie

    2011-05-15

    Green chemistry is the science of chemistry used in a way that will not use or create hazardous substances. Dr. Rui Resendes is working in this field at GreenCentre Canada, an offshoot of PARTEQ Innovations in Kingston, Ontario. GreenCentre's preliminary findings suggest their licensed product {sup S}witchable Solutions{sup ,} featuring 3 classes of solvents and a surfactant, may be useful in bitumen oil sands extraction.

  12. General Chemistry Division quarterly report, January--March 1977

    Energy Technology Data Exchange (ETDEWEB)

    Harrar, J.E. (ed.)

    1977-06-24

    Reported are: development of analytical capabilities of a submillimeter spectrometer; improved minimum detectibility of laser-induced molecular fluorescence; use of laser photoionization sources for analytical mass spectrometry; photoacoustic spectroscopy of solids; development of time-resolved spectroscopy for multicomponent mixtures; excited-state reactions of Ba/sup +/ + N/sub 2/O ..-->.. BaO +N/sub 2/; development of an ion-cyclotron-resonance spectrometer; development of glow-discharge multielement analytical systems; analysis of deposits on exploding gold bridgeware detonators; results of /sup 13/C-NMR study of toluene-2,4-diisocyanate polymers; analysis of 1,6-hexanediamine and 1,3-dipiperiodylpropane; studies of discrepancies between chromatographic and mass spectrometric data. (JRD)

  13. General Chemistry Division quarterly report, January--March 1977

    International Nuclear Information System (INIS)

    Reported are: development of analytical capabilities of a submillimeter spectrometer; improved minimum detectibility of laser-induced molecular fluorescence; use of laser photoionization sources for analytical mass spectrometry; photoacoustic spectroscopy of solids; development of time-resolved spectroscopy for multicomponent mixtures; excited-state reactions of Ba+ + N2O → BaO +N2; development of an ion-cyclotron-resonance spectrometer; development of glow-discharge multielement analytical systems; analysis of deposits on exploding gold bridgeware detonators; results of 13C-NMR study of toluene-2,4-diisocyanate polymers; analysis of 1,6-hexanediamine and 1,3-dipiperiodylpropane; studies of discrepancies between chromatographic and mass spectrometric data; development of automated oil shale mass spectrometer; determination of minerals in oil shales; determination of H2S in geothermal plant flue gas; characterization of geothermal brine and solids; screening of materials for use in geothermal brine; numerical studies of combustion processes; development of emission spectrometer for U in water and sediments; measurements of lanthanide ionization potentials; development of microwave multi-gas analyzer; and studies of coagulation processes of aeresols

  14. General Chemistry Division quarterly report, October--December 1978

    Energy Technology Data Exchange (ETDEWEB)

    Hill, J.

    1979-03-03

    The current status of the following projects is reported: associative ionization in the alkaline earths using multi-step laser excitation; an electronic terminal emulator for timing automatic samplers; color display system for the electron microprobe; examination of copper surfaces; stabilizer circuit for a mode-locker; investigation of the iron-chlorine reaction by modulated molecular beam mass spectroscopy; characterization of the mode-locked krypton ion laser; photoelectrochemistry; discrete-sampling wire atomizer and the microwave-induced plasma; modification of a Mettler buret; analysis of explosive composites; nonaquesus titrimetry; assay of ammonium nitrate and ethylenediamine dinitrate; potentiometric microdetermination of pentaerythritol tetranitrate; and testing of proprietary chemical additives and seeding for the reduction of scale in hypersaline geothermal systems. (LK)

  15. General Chemistry Division quarterly report, July--September 1976

    Energy Technology Data Exchange (ETDEWEB)

    Harrar, J.E. (comp. and ed.)

    1976-12-09

    The status is reported for various research projects in automation and instrumentation for chemical analysis, analytical methodology and measurements, and development of analytical methods for the energy program. (JSR)

  16. General Chemistry Division quarterly report, October--December 1976

    Energy Technology Data Exchange (ETDEWEB)

    Harrar, J.E.; Lentzner, H.L. (eds.)

    1977-03-09

    Reported are: determination of imperfections on a laser spatial-filter lens; oxidation of U in O/sub 2/--N/sub 2/ mixtures; use of polarized x-rays to improve detection limits in energy-dispersive x-ray fluorescence analysis; detection of less than 1 ppT of organic compounds by laser-induced molecular fluorescence; a Stark-shift laser spectrometer; photoionization thresholds of Nd, Sm, Eu, Dy, and Er; response tests of chloride ion-selective electrodes; chemical analyses of explosive composites; solid formation and corrosion in geothermal brine; analysis of carbonates in oil shales; models of methane combustion; and biofuel production from algae. (DLC)

  17. Green Chemistry: Innovations for a Cleaner World. [Videotape].

    Science.gov (United States)

    American Chemical Society, Washington, DC.

    This video was developed through a cooperative agreement between the American Chemical Society (ACS)'s Education and International Activities Division and the U.S. Environmental Protection Agency's Green Chemistry Program, Office of Pollution Prevention and Toxics. "Green Chemistry" focuses on chemical products and processes that reduce or…

  18. Radiation Chemistry

    Science.gov (United States)

    Wojnárovits, L.

    Ionizing radiation causes chemical changes in the molecules of the interacting medium. The initial molecules change to new molecules, resulting in changes of the physical, chemical, and eventually biological properties of the material. For instance, water decomposes to its elements H2 and O2. In polymers, degradation and crosslinking take place. In biopolymers, e.g., DNS strand breaks and other alterations occur. Such changes are to be avoided in some cases (radiation protection), however, in other cases they are used for technological purposes (radiation processing). This chapter introduces radiation chemistry by discussing the sources of ionizing radiation (radionuclide sources, machine sources), absorption of radiation energy, techniques used in radiation chemistry research, and methods of absorbed energy (absorbed dose) measurements. Radiation chemistry of different classes of inorganic (water and aqueous solutions, inorganic solids, ionic liquids (ILs)) and organic substances (hydrocarbons, halogenated compounds, polymers, and biomolecules) is discussed in concise form together with theoretical and experimental backgrounds. An essential part of the chapter is the introduction of radiation processing technologies in the fields of polymer chemistry, food processing, and sterilization. The application of radiation chemistry to nuclear technology and to protection of environment (flue gas treatment, wastewater treatment) is also discussed.

  19. Química de (nanomateriais Nano materials chemistry

    Directory of Open Access Journals (Sweden)

    Aldo J. G. Zarbin

    2007-12-01

    Full Text Available An overview of different aspects related to Materials and Nanomaterials Chemistry is presented and discussed. The insertion of this field in Brazil is evaluated on the basis of the communications presented on the 30th Annual Meeting of the Brazilian Chemical Society (SBQ. The importance of the Materials Chemistry Division of SBQ for the growth and consolidation of Materials Chemistry in Brazil is also discussed.

  20. Report of the Nuclear Physics Division (January 1, 1987 to December 31, 1987)

    International Nuclear Information System (INIS)

    Nuclear Physics Division is involved in research in nuclear and solid state physics. The year 1987 has been a fairly eventful one for the Division in the sense that several activities came to a high level of fruition. A beam of 5+ silicon ions accelerated to about 14 MeV in the BARC-TIFR Pelletron accelerator was obtained for the first time in September. Experiments on the cyclotron at Calcutta and the CN Van-de-Graaff accelerator at Trombay have continued. The latter continued to be heavily utilised for nuclear, chemical, materials and other applications in its twentysixth year of operation. For the neutron scattering programme at Dhruva Reactor two new diffractometers were commissioned, one of a conventional type and another based on a metre long position sensitive detectors (PSD). A neutron interferrometer was successfully operated at the CIRUS reactor. A modular CW argon laser giving a total power of about 2.7 watts has been incorporated with the Raman scattering spectrometer thus increasing the range of performable experiments. The modularity allows quick replacement of parts. A number of interesting investigations were carried out by the members of the Division; among others they include observations of quasi-molecular heavy ion resonances in Sisup(2s), anomalous behaviour of deep sub-barrier fission in uranium, crystalline to amorphous to crystalline transition in tetracyanoethylene, exceptional stability of the quasi-crystal Al6CuMg4 and the development of a phenomenological mode to describe magnetisation curves in the new high-Tsub(c) superconductors. These and many other investigations are reported. (M.G.B.)

  1. Quantum chemistry

    CERN Document Server

    Lowe, John P

    2006-01-01

    Lowe's new edition assumes little mathematical or physical sophistication and emphasizes an understanding of the techniques and results of quantum chemistry. It can serve as a primary text in quantum chemistry courses, and enables students and researchers to comprehend the current literature. This third edition has been thoroughly updated and includes numerous new exercises to facilitate self-study and solutions to selected exercises.* Assumes little initial mathematical or physical sophistication, developing insights and abilities in the context of actual problems* Provides thorough treatment

  2. Polymer Chemistry

    Science.gov (United States)

    Williams, Martha; Roberson, Luke; Caraccio, Anne

    2010-01-01

    This viewgraph presentation describes new technologies in polymer and material chemistry that benefits NASA programs and missions. The topics include: 1) What are Polymers?; 2) History of Polymer Chemistry; 3) Composites/Materials Development at KSC; 4) Why Wiring; 5) Next Generation Wiring Materials; 6) Wire System Materials and Integration; 7) Self-Healing Wire Repair; 8) Smart Wiring Summary; 9) Fire and Polymers; 10) Aerogel Technology; 11) Aerogel Composites; 12) Aerogels for Oil Remediation; 13) KSC's Solution; 14) Chemochromic Hydrogen Sensors; 15) STS-130 and 131 Operations; 16) HyperPigment; 17) Antimicrobial Materials; 18) Conductive Inks Formulations for Multiple Applications; and 19) Testing and Processing Equipment.

  3. Radiation hazards control activities in BARC and other DAE units in Bombay and Indore: annual report 1994

    International Nuclear Information System (INIS)

    The radiation hazards control activities of units of Radiation Safety Systems Division stationed at different plants and facilities of Bhabha Atomic Research Centre and other units of Department of Atomic Energy in Bombay are briefly summarised. The activities are reported plantwise and include the following: (i) nature of radioactive operations, (ii) radiological status of the plant, (iii) personnel exposure data including collective and average exposures, (iv) effluent discharges, (v) waste disposal data, and (vi) safety related unusual occurrences and special problems, if any. Important operations for which extensive radiation safety surveillance was provided during the year 1994 are included. During the year 4319 persons were provided with radiation safety coverage at 25 different facilities. The collective dose and the average individual dose for the year 1994 are 6.08 man-Sv and 1.41 mSv respectively. Trends in personnel radiation exposure for a longer period i.e. from 1981 onwards are shown graphically. The figure also shows a steady trend in collective as well as average doses. The major contribution to dose comes from the following facilities: Plutonium Plant, Thorium Plant, Cirus, Radiological Laboratories and Dhruva in the decreasing order. (author). refs., tabs., 1 fig

  4. Chemical Technology Division. Annual technical report, 1995

    International Nuclear Information System (INIS)

    Highlights of the Chemical Technology (CMT) Division's activities during 1995 are presented. In this period, CMT conducted research and development in the following areas: (1) electrochemical technology, including advanced batteries and fuel cells; (2) methods for treatment of hazardous waste and mixed hazardous/radioactive waste; (3) the reaction of nuclear waste glass and spent fuel under conditions expected for an unsaturated repository; (4) processes for separating and recovering selected elements from waste streams, concentrating low-level radioactive waste streams with advanced evaporator technology, and producing 99Mo from low-enriched uranium; (5) electrometallurgical treatment of different types of spent nuclear fuel in storage at Department of Energy sites; and (6) physical chemistry of selected materials in environments simulating those of fission and fusion energy systems

  5. Important projects of the Division

    International Nuclear Information System (INIS)

    In this chapter important projects of the Division for Radiation Safety, NPP Decommissioning and Radwaste Management of the VUJE, a. s. are presented. Division for Radiation Safety, NPP Decommissioning and Radwaste Management has successfully carried out variety of significant projects. The most significant projects that were realised, are implemented and possible future projects are introduced in the following part of presentation.

  6. Lightning Talks 2015: Theoretical Division

    Energy Technology Data Exchange (ETDEWEB)

    Shlachter, Jack S. [Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

    2015-11-25

    This document is a compilation of slides from a number of student presentations given to LANL Theoretical Division members. The subjects cover the range of activities of the Division, including plasma physics, environmental issues, materials research, bacterial resistance to antibiotics, and computational methods.

  7. E-Division activities report

    International Nuclear Information System (INIS)

    This report describes some of the activities in E (Experimental Physics) Division during the past year. E-Division carries out research and development in areas related to the missions of the Laboratory. Many of the activities are in pure and applied atomic and nuclear physics. In addition, this report describes work on accelerators, radiation damage, microwaves, and plasma diagnostics

  8. Organic chemistry

    International Nuclear Information System (INIS)

    The activities of the mycotoxin research group are discussed. This includes the isolation and structure determination of mycotoxins, plant products, the biosyntheris of mycotoxins, the synthesis and characteristics of steroids, the synthesis and mechanistic aspects of heterocyclic chemistry and the functionality of steroids over long distances. Nmr spectra and mass spectroscopy are some of the techniques used

  9. Reinventing Chemistry

    OpenAIRE

    Whitesides, George McClelland

    2015-01-01

    Chemistry is in a period of change, from an era focused on molecules and reactions, to one in which manipulations of systems of molecules and reactions will be essential parts of controlling larger systems. This Essay traces paths from the past to possible futures.

  10. Chemistry Notes

    Science.gov (United States)

    School Science Review, 1972

    1972-01-01

    Short articles on the kinetics of the hydrogen peroxide-iodide ion reaction, simulation of fluidization catalysis, the use of Newman projection diagrams to represent steric relationships in organic chemistry, the use of synthetic substrates for proteolytic enzyme reactions, and two simple clock reactions"--hydrolysis of halogenoalkanes and…

  11. Infrared Spectroscopy as a Preview of Coming Attractions: Teaching Chemistry with Instrumental Methods at Two-Year Colleges

    Science.gov (United States)

    Brown, David R.; Bushey, Michelle

    2010-01-01

    Two-year colleges (2YCs) provide a significant amount of chemical education to undergraduates in the United States. By design, the charge of the 2YCs is to provide coursework at the lower-division level. Nonetheless, general chemistry courses in 2YCs can be enhanced with content to prepare future chemistry majors for upper-division education. The…

  12. MIDDLE MIOCENE DEPOSITIONAL MODEL IN THE DRAVA DEPRESSION DESCRIBED BY GEOSTATISTICAL POROSITY AND THICKNESS MAPS (CASE STUDY: STARI GRADAC-BARCS NYUGAT FIELD

    Directory of Open Access Journals (Sweden)

    Tomislav Malvić

    2006-12-01

    Full Text Available Neogene depositional environments in the Drava depression can be classified in two groups. One group is of local alluvial fans, which were active during the period of Middle Miocene (Badenian extension through the entire Pannonian Basin. The second group is represented by continuous Pannonian and Pontian sedimentation starting with lacustrine environment of partly deep water and partly prodelta (turbidity fans and terminating at the delta plain sedimentation. The coarse-grained sediments of alluvial fans have the great hydrocarbon potential, because they often comprise reservoir rocks. Reservoir deposits are mostly overlain (as result of fan migration by pelitic seal deposits and sometimes including organic rich source facies. That Badenian sequences are often characterised by complete petroleum systems, what is confirmed by large number of oil and gas discoveries in such sediments in the Drava and other Croatian depressions. Alluvial environments are characterised by frequent changes of petrophysical properties, due to local character of depositional mechanism and material sources. In the presented paper, Stari Gradac-Barcs Nyugat field is selected as a case study for demonstrating the above mentioned heterogenic features of the Badenian sequences. Structural solutions are compared by maps of parameters related to depositional environment, i.e. porosity and thickness maps. Geostatistics were used for spatial extension of input dataset. The spatial variability of porosity values, i.e. reservoir quality, is interpreted by transition among different sub-environments (facies in the alluvial fan system.

  13. Control and interlocking of ventilation system at Advanced Fuel Fabrication Facility, BARC, Tarapur using microprocessor based programmable logic controllers (Paper No. 5.4)

    International Nuclear Information System (INIS)

    A nuclear fuel fabrication facility has been set up by BARC at Tarapur. These fuel elements being radioactive emit nuclear radiation which is hazardous to human beings. Therefore these fuel elements during fabrication stage are handled in totally enclosed transparent boxes known as glove boxes. To prevent leakage from these glove boxes the once through ventilation system at fuel fabrication facility has been designed and interlocked such that air flow is always from surrounding atmosphere to laboratory rooms to glove boxes. This is achieved by maintaining negative air pressure in laboratory rooms and still higher negative pressure in glove boxes. Some interlocking logics have been defined to achieve these interlocks by operating a combination of specified number of main exhaust blowers, glove exhaust blowers and supply blowers. This interlocking has been done on electrical side and being very complicated, programmable logic controllers have been used instead of electromagnetic relays for building the blocks of interlocking scheme. With PLC, once the system is hard wired, any change in logic can be easily effected by reprogramming the system. In this paper the commissioning experience, teething troubles faced, remedial measures taken and modifications carried out are discussed. (author)

  14. Scientific Equipment Division - Overview

    International Nuclear Information System (INIS)

    Full text: The Scientific Equipment Division consists of the Design Group and the Mechanical Workshop. The activity of the Division includes the following: - designing of devices and equipment for experiments in physics, their mechanical construction and assembly. In particular, there are vacuum chambers and installations for HV and UHV; - maintenance and upgrading of the existing installations and equipment in our Institute; - participation of our engineers and technicians in design works, equipment assembly and maintenance for experiments in foreign laboratories. The Design Group is equipped with PC-computers and AutoCAD graphic software (release 2000 and Mechanical Desktop 4.0) and a AO plotter, what allows us to make drawings and 2- and 3-dimensional mechanical documentation to the world standards. The Mechanical Workshop can offer a wide range of machining and treatment methods with satisfactory tolerances and surface quality. It offers the following possibilities: - turning - cylindrical elements of a length up to 2000 mm and a diameter up to 400 mm, and also disc-type elements of a diameter up to 600 mm and a length not exceeding 300 mm; - milling - elements of length up to 1000 mm and gear wheels of diameter up to 300 mm; - grinding - flat surfaces of dimensions up to 300 mm x 1000 mm and cylindrical elements of a diameter up to 200 mm and a length up to 800 mm; - drilling - holes of a diameter up to 50 mm; - welding - electrical and gas welding, including TIG vacuum-tight welding; - soft and hard soldering; - mechanical works including precision engineering; - plastics treatment - machining and polishing using diamond milling, modelling, lamination of various shapes and materials, including plexiglas, scintillators and light-guides; - painting - paint spraying with possibility of using furnace-fred drier of internal dimensions of 800 mm x 800 mm x 800 mm. Our workshop posses CNC milling machine which can be used for machining of work-pieces up to 500 kg

  15. Fine chemistry

    International Nuclear Information System (INIS)

    The 1988 progress report of the Fine Chemistry laboratory (Polytechnic School, France) is presented. The research programs are centered on the renewal of the organic chemistry most important reactions and on the invention of new, highly efficient and highly selective reactions, by applying low cost reagents and solvents. An important research domain concerns the study and fabrication of new catalysts. They are obtained by means of the reactive sputtering of the metals and metal oxydes thin films. The Monte Carlo simulations of the long-range electrostatic interaction in a clay and the obtention of acrylamides from anhydrous or acrylic ester are summarized. Moreover, the results obtained in the field of catalysis are also given. The published papers and the congress communications are included

  16. Organometallic chemistry

    OpenAIRE

    Bashkin, James K.; M.L.H. Green; Dr. M. L. H. Green

    1982-01-01

    Transition metal organometallic chemistry is a rapidly expanding field, which has an important relationship to industrial problems of petrochemical catalysis. This thesis describes studies of fundamental organometallic reaction processes, such as C-H and C-C bond formation and cleavage, and investigations of the structure and bonding of organometallic compounds. A number of techniques were used to pursue these studies, including synthesis, X-ray crystallography, and semi-em...

  17. Disk Chemistry*

    OpenAIRE

    Thi Wing-Fai

    2015-01-01

    The chemical species in protoplanetary disks react with each other. The chemical species control part of the thermal balance in those disks. How the chemistry proceeds in the varied conditions encountered in disks relies on detailed microscopic understanding of the reactions through experiments or theoretical studies. This chapter strives to summarize and explain in simple terms the different types of chemical reactions that can lead to complex species. The first part of the chapter deals wit...

  18. Interstellar chemistry

    OpenAIRE

    Klemperer, William

    2006-01-01

    In the past half century, radioastronomy has changed our perception and understanding of the universe. In this issue of PNAS, the molecular chemistry directly observed within the galaxy is discussed. For the most part, the description of the molecular transformations requires specific kinetic schemes rather than chemical thermodynamics. Ionization of the very abundant molecular hydrogen and atomic helium followed by their secondary reactions is discussed. The rich variety of organic species o...

  19. Physics division annual report 2006

    International Nuclear Information System (INIS)

    This report highlights the activities of the Physics Division of Argonne National Laboratory in 2006. The Division's programs include the operation as a national user facility of ATLAS, the Argonne Tandem Linear Accelerator System, research in nuclear structure and reactions, nuclear astrophysics, nuclear theory, investigations in medium-energy nuclear physics as well as research and development in accelerator technology. The mission of nuclear physics is to understand the origin, evolution and structure of baryonic matter in the universe--the core of matter, the fuel of stars, and the basic constituent of life itself. The Division's research focuses on innovative new ways to address this mission

  20. Physics division annual report 2006.

    Energy Technology Data Exchange (ETDEWEB)

    Glover, J.; Physics

    2008-02-28

    This report highlights the activities of the Physics Division of Argonne National Laboratory in 2006. The Division's programs include the operation as a national user facility of ATLAS, the Argonne Tandem Linear Accelerator System, research in nuclear structure and reactions, nuclear astrophysics, nuclear theory, investigations in medium-energy nuclear physics as well as research and development in accelerator technology. The mission of nuclear physics is to understand the origin, evolution and structure of baryonic matter in the universe--the core of matter, the fuel of stars, and the basic constituent of life itself. The Division's research focuses on innovative new ways to address this mission.

  1. Computational chemistry

    Science.gov (United States)

    Arnold, J. O.

    1987-01-01

    With the advent of supercomputers, modern computational chemistry algorithms and codes, a powerful tool was created to help fill NASA's continuing need for information on the properties of matter in hostile or unusual environments. Computational resources provided under the National Aerodynamics Simulator (NAS) program were a cornerstone for recent advancements in this field. Properties of gases, materials, and their interactions can be determined from solutions of the governing equations. In the case of gases, for example, radiative transition probabilites per particle, bond-dissociation energies, and rates of simple chemical reactions can be determined computationally as reliably as from experiment. The data are proving to be quite valuable in providing inputs to real-gas flow simulation codes used to compute aerothermodynamic loads on NASA's aeroassist orbital transfer vehicles and a host of problems related to the National Aerospace Plane Program. Although more approximate, similar solutions can be obtained for ensembles of atoms simulating small particles of materials with and without the presence of gases. Computational chemistry has application in studying catalysis, properties of polymers, all of interest to various NASA missions, including those previously mentioned. In addition to discussing these applications of computational chemistry within NASA, the governing equations and the need for supercomputers for their solution is outlined.

  2. Green chemistry

    International Nuclear Information System (INIS)

    A grand challenge facing government, industry, and academia in the relationship of our technological society to the environment is reinventing the use of materials. To address this challenge, collaboration from an interdisciplinary group of stakeholders will be necessary. Traditionally, the approach to risk management of materials and chemicals has been through inerventions intended to reduce exposure to materials that are hazardous to health and the environment. In 1990, the Pollution Prevention Act encouraged a new tact-elimination of hazards at the source. An emerging approach to this grand challenge seeks to embed the diverse set of environmental perspectives and interests in the everyday practice of the people most responsible for using and creating new materials--chemists. The approach, which has come to be known as Green Chemistry, intends to eliminate intrinsic hazard itself, rather than focusing on reducing risk by minimizing exposure. This chapter addresses the representation of downstream environmental stakeholder interests in the upstream everyday practice that is reinventing chemistry and its material inputs, products, and waste as described in the '12 Principles of Green Chemistry'

  3. Green chemistry

    International Nuclear Information System (INIS)

    The depletion of world fossil fuel reserves and the involvement of greenhouse gases in the global warming has led to change the industrial and energy policies of most developed countries. The goal is now to reserve petroleum to the uses where it cannot be substituted, to implement renewable raw materials obtained from plants cultivation, and to consider the biodegradability of molecules and of manufactured objects by integrating the lifetime concept in their expected cycle of use. The green chemistry includes the design, development and elaboration of chemical products and processes with the aim of reducing or eliminating the use and generation of harmful compounds for the health and the environment, by adapting the present day operation modes of the chemical industry to the larger framework of the sustainable development. In addition to biofuels, this book reviews the applications of green chemistry in the different industrial processes in concern. Part 1 presents the diversity of the molecules coming from renewable carbon, in particular lignocellulose and the biotechnological processes. Part 2 is devoted to materials and treats of the overall available technological solutions. Part 3 focusses on functional molecules and chemical intermediates, in particular in sugar- and fats-chemistry. Part 4 treats of biofuels under the aspects of their production and use in today's technologies. The last part deals with the global approaches at the environmental and agricultural levels. (J.S.)

  4. ftsZ gene and plastid division

    Institute of Scientific and Technical Information of China (English)

    2003-01-01

    Plastid is one of the most important cellular organelles, the normal division process of plastid is essential for the differentiation and development of plant cells. For a long time, morphological observations and genetic analyses to special mutants are the major research fields of plastid division, but the molecular mechanisms underlying plastid division are largely unknown. Because of the endosymbiotic origin, plastid division might have mechanisms in common with those involved in bacterial cell division. It has been proved that several prokaryotic cell division genes also participate in the plastid division. Recently, the mechanisms of prokaryotic cell division have been well documented, which provides a valuable paradigm for understanding the plastid division mechanisms. In plants, the functional analyses of ftsZ, a key gene involved both in bacteria and plastid division, have established the solid foundation for people to understand the plastid division in molecular level. In this paper we will make a review for the research history and progress of plastid division.

  5. E-Division activities report

    Energy Technology Data Exchange (ETDEWEB)

    Barschall, H.H. (comp.)

    1984-07-01

    E (Experimental Physics) Division carries out basic and applied research in atomic and nuclear physics, in materials science, and in other areas related to the missions of the Laboratory. Some of the activities are cooperative efforts with other divisions of the Laboratory, and, in a few cases, with other laboratories. Many of the experiments are directly applicable to problems in weapons and energy, some have only potential applied uses, and others are in pure physics. This report presents abstracts of papers published by E (Experimental Physics) Division staff members between July 1983 and June 1984. In addition, it lists the members of the scientific staff of the division, including visitors and students, and some of the assignments of staff members on scientific committees. A brief summary of the budget is included.

  6. E-Division activities report

    International Nuclear Information System (INIS)

    E (Experimental Physics) Division carries out basic and applied research in atomic and nuclear physics, in materials science, and in other areas related to the missions of the Laboratory. Some of the activities are cooperative efforts with other divisions of the Laboratory, and, in a few cases, with other laboratories. Many of the experiments are directly applicable to problems in weapons and energy, some have only potential applied uses, and others are in pure physics. This report presents abstracts of papers published by E (Experimental Physics) Division staff members between July 1983 and June 1984. In addition, it lists the members of the scientific staff of the division, including visitors and students, and some of the assignments of staff members on scientific committees. A brief summary of the budget is included

  7. E-Division activities report

    International Nuclear Information System (INIS)

    This report describes some of the activities in E (Experimental Physics) Division during the past year. E-Division carries out research and development in areas related to the missions of the Laboratory. Many of the activities are in pure and applied atomic and nuclear physics and in material science. In addition this report describes work on accelerators, microwaves, plasma diagnostics, determination of atmospheric oxygen and of nitrogen in tissue

  8. Surface chemistry

    CERN Document Server

    Desai, KR

    2008-01-01

    The surface Chemistry of a material as a whole is crucially dependent upon the Nature and type of surfaces exposed on crystallites. It is therefore vitally important to independently Study different, well - defined surfaces through surface analytical techniques. In addition to composition and structure of surface, the subject also provides information on dynamic light scattering, micro emulsions, colloid Stability control and nanostructures. The present book endeavour to bring before the reader that the understanding and exploitation of Solid state phenomena depended largely on the ability to

  9. Hypercarbon chemistry

    International Nuclear Information System (INIS)

    This text points out the emerging significance of higher-valent carbon compounds. It describes the compounds of carbon with coordination numbers greater than four and explores the delocalized bonds of π aromatic molecules as a basis for rational description of orbitals; localized multicentered orbitals; the interactions of metallic ions with other atoms and molecules; the skeletal electron counts as a guide for synthesis; and the isolobal concept. Illustrated are the ways in which these subjects bring together structure and reactivity in the great diversity of novel carbon chemistry and its relationship to that of boron, lithium, hydrogen, the metals, and others

  10. Theoretical chemistry periodicities in chemistry and biology

    CERN Document Server

    Eyring, Henry

    1978-01-01

    Theoretical Chemistry: Periodicities in Chemistry and Biology, Volume 4 covers the aspects of theoretical chemistry. The book discusses the stably rotating patterns of reaction and diffusion; the chemistry of inorganic systems exhibiting nonmonotonic behavior; and population cycles. The text also describes the mathematical modeling of excitable media in neurobiology and chemistry; oscillating enzyme reactions; and oscillatory properties and excitability of the heart cell membrane. Selected topics from the theory of physico-chemical instabilities are also encompassed. Chemists, mechanical engin

  11. Publication productivity of the Bio-organic division at Bhabha Atomic Research Centre : a scientometric study

    OpenAIRE

    Kademani, B. S.; Vijai Kumar, *; Anil Kumar; Anil Sagar, *; Lalit Mohan; Surwase, Ganesh; Gaderao, C. R.

    2005-01-01

    Attempts to analyse quantitatively 475 papers published by the Bio-Organic Division of Bhabha Atomic Research Centre during 1972–2002 in various domains like Synthesis (202), Bioorganic Chemistry (100), Biotechnology (70), Natural Products (53), Waste Management (30), Supra-molecular Chemistry (18) and Organic Spectroscopy (2). The highest number of publications in a year were 38 in 2001. The average number of publications per year was 15.3 and the highest collaboration coefficient 1.0 was fo...

  12. Combustion chemistry

    Energy Technology Data Exchange (ETDEWEB)

    Brown, N.J. [Lawrence Berkeley Laboratory, CA (United States)

    1993-12-01

    This research is concerned with the development and use of sensitivity analysis tools to probe the response of dependent variables to model input variables. Sensitivity analysis is important at all levels of combustion modeling. This group`s research continues to be focused on elucidating the interrelationship between features in the underlying potential energy surface (obtained from ab initio quantum chemistry calculations) and their responses in the quantum dynamics, e.g., reactive transition probabilities, cross sections, and thermal rate coefficients. The goals of this research are: (i) to provide feedback information to quantum chemists in their potential surface refinement efforts, and (ii) to gain a better understanding of how various regions in the potential influence the dynamics. These investigations are carried out with the methodology of quantum functional sensitivity analysis (QFSA).

  13. Cyclodextrin chemistry

    International Nuclear Information System (INIS)

    The chemistry of cyclodextrins was studied. This study included synthesising some cyclodextrin derivatives, preparing selected inclusion complexes with cyclodextrin and investigating the effects of gamma irradiation on cyclodextrins and certain linear oligosaccharides. This report presents a brief review of the structure and properties of cyclodextrins, the synthesis of cyclodextrin derivatives, their complexation and applications. This is followed by a description of the synthesis of some cyclodextrin derivatives and the preparation of inclusion complexes of cyclodextrin with some organic compounds. Finally, the effects of gamma irradiation on cyclodextrins, some of their derivatives and certain structurally related carbohydrates are discussed. The gamma irradiation studies were carried out for two reasons: to study the effects of gamma irradiation on cyclodextrins and their derivatives; and to investigate selectivity during the gamma irradiation of cyclodextrin derivatives

  14. Health and Safety Research Division

    International Nuclear Information System (INIS)

    The programs of the Health and Safety Research Division encompass a broad range of basic and applied research defining how energy-related technologies affect man. Approximately one-third of the effort is in basic studies at atomic and molecular levels and is supported almost entirely by DOE's Office of Health and Environmental Research. The remainder of the Division's programs is of a more applied nature and receives more diverse funding from within DOE and other agencies. Some of the Division's special skills including negative ion physics, electron- and ion-molecule interactions, electron attachment and detachment processes, laser spectroscopy, wake theory, gaseous dielectrics, nuclear medicine, modeling radionuclide transport to man, radiation dosimetry, decontamination and decommissioning surveys, developing and testing instrumentation to measure exposures of humans to chemicals, and uncertainty analysis of assessment models are discussed. A selection of some recent accomplishments is listed

  15. Building an academic colorectal division.

    Science.gov (United States)

    Koltun, Walter A

    2014-06-01

    Colon and rectal surgery is fully justified as a valid subspecialty within academic university health centers, but such formal recognition at the organizational level is not the norm. Creating a colon and rectal division within a greater department of surgery requires an unfailing commitment to academic concepts while promulgating the improvements that come in patient care, research, and teaching from a specialty service perspective. The creation of divisional identity then opens the door for a strategic process that will grow the division even more as well as provide benefits to the institution within which it resides. The fundamentals of core values, academic commitment, and shared success reinforced by receptive leadership are critical. Attention to culture, commitment, collaboration, control, cost, and compensation leads to a successful academic division of colon and rectal surgery. PMID:25067922

  16. Obstacle to e-government: Digital division

    OpenAIRE

    Fatih Çapar; Ömer Faruk Vural

    2013-01-01

    The issue of digital division; is defined as different sectors of society’s difference in rates of access to information and communication technologies. Digital division is the one of the greatest obstacles to the transition to an information society and the provision of e-government services. In this study, the subject of digital division, importance of reducing digital division and its effect of the transition to e-government were described, the issue of digital division in Turkey and the ...

  17. Nuclear chemistry

    International Nuclear Information System (INIS)

    Topics covered include: mass asymmetry and total kinetic energy release in the spontaneous fission of 262105; calculation of spontaneous fission properties of very heavy nuclei - 98 less than or equal to Z less than or equal to 106 and 150 less than or equal to N less than or equal to 164; energy losses for 84Kr ions in nickel, aluminium and titanium; differences in compound nuclei formed with 40Ar and 84Kr projectiles; measurement of the energy division vs. mass in highly damped reactions; ambiguities in the inference of precompound emission from excitation function analysis; selective laser one-atom detection of neutral prompt fission fragments; laser induced nuclear polarization - application to the study of spontaneous fission isomers; quadrupole and hexadecapole deformations in the actinide nuclei; high-spin states in 164Yb; contrasting behavior of h/sub 9/2/ and i/sub 13/2/ bands in 185Au; multiple band crossings in 164Er; recoil-distance measurement of lifetimes of rotational states in 164Dy, lifetimes of ground-band states in 192Pt and 194Pt and application of the rotation-alignment model; coulomb excitation of vibrational nuclei with heavy ions; surface structure of deformed nuclei; valency contribution to neutron capture in 32S; neutron capture cross section of manganese; search for superheavy elements in natural samples by neutron multiplicity counting; and gamma-ray studies on the geochemistry of achondritic meteorites

  18. Reactor Engineering Division annual report

    International Nuclear Information System (INIS)

    Research activities in the Division of Reactor Engineering in fiscal 1977 are described. Works of the Division are development of multi-purpose Very High Temperature Gas Cooled Reactor, fusion reactor engineering, and development of Liquid Metal Fast Breeder Reactor for Power Reactor and Nuclear Fuel Development Corporation. Contents of the report are nuclear data and group constants, theoretical method and code development, integral experiment and analysis, shielding, heat transfer and fluid dynamics, reactor and nuclear instrumentation, dynamics analysis and control method development, fusion reactor technology, and Committee on Reactor Physics. (Author)

  19. Reactor Engineering Division annual report

    International Nuclear Information System (INIS)

    Research and development activities in the Division of Reactor Engineering in fiscal 1981 are described. The work of the Division is closely related to development of multipurpose Very High Temperature Gas Cooled Reactor and fusion reactor, and development of Liquid Metal Fast Breeder Reactor carried out by Power Reactor and Nuclear Fuel Development Corporation. Contents of the report are achievements in fields such as nuclear data and group constants, theoretical method and code development, integral experiment and analysis, shielding, reactor and nuclear instrumentation, reactor control and diagnosis, and fusion reactor technology, and activities of the Committee on Reactor Physics. (author)

  20. Reactor Engineering Division annual report

    International Nuclear Information System (INIS)

    Research activities conducted in Reactor Engineering Division in fiscal 1975 are summarized in this report. Works in the division are closely related to the development of multi-purpose High-temperature Gas Cooled Reactor, the development of Liquid Metal Fast Breeder Reactor by Power Reactor and Nuclear Fuel Development Corporation, and engineering research of thermonuclear fusion reactor. Many achievements are described concerning nuclear data and group constants, theoretical method and code development, integral experiment and analysis, shielding, heat transfer and fluid dynamics, reactor and nuclear instrumentation, dynamics analysis and control method development, fusion reactor technology and activities of the Committee on Reactor Physics. (auth.)

  1. Reactor Engineering Division annual report

    International Nuclear Information System (INIS)

    Research activities in fiscal 1974 in Reactor Engineering Division of eight laboratories and computing center are described. Works in the division are closely related with the development of a multi-purpose High-temperature Gas Cooled Reactor, the development of a Liquid Metal Fast Breeder Reactor in Power Reactor and Nuclear Fuel Development Corporation, and engineering of thermonuclear fusion reactors. They cover nuclear data and group constants, theoretical method and code development, integral experiment and analysis, shielding, heat transfer and fluid dynamics, reactor and nuclear instrumentation, dynamics analysis and control method development, fusion reactor technology and aspects of the computing center. (auth.)

  2. Reactor Engineering Division annual report

    International Nuclear Information System (INIS)

    Research activities in the Division of Reactor Engineering in fiscal 1979 are described. The work of the Division is closely related to development of multi-purpose Very High Temperature Gas Cooled Reactor and fusion reactor, and development of Liquid Metal Fast Breeder Reactor carried out by Power Reactor and Nuclear Fuel Development Corporation. Contents of the report are achievements in fields such as nuclear data and group constants, theoretical method and code development, integral experiment and analysis, shielding, reactor and nuclear instrumentation, reactor control and diagnosis, and fusion reactor technology, and activities of the Committees on Reactor Physics and on Decomissioning of Nuclear Facilities. (author)

  3. Los Alamos Life Sciences Division's biomedical and environmental research programs. Progress report, January-December 1980

    International Nuclear Information System (INIS)

    Highlights of research progress accomplished in the Life Sciences Division during the year ending December 1980 are summarized. Reports from the following groups are included: Toxicology, Biophysics, Genetics; Environmental Pathology, Organic Chemistry, and Environmental Sciences. Individual abstracts have been prepared for 46 items for inclusion in the Energy Data Base

  4. Science Update: Inorganic Chemistry

    Science.gov (United States)

    Rawls, Rebecca

    1978-01-01

    This first in a series of articles describing the state of the art of various branches of chemistry reviews inorganic chemistry, including bioinorganic, photochemistry, organometallic, and solid state chemistries. (SL)

  5. Why Teach Environmental Chemistry?

    Science.gov (United States)

    Gardner, Marjorie H.

    1974-01-01

    Discusses the importance of teaching environmental chemistry in secondary school science classes, and outlines five examples of environmental chemistry problems that focus on major concepts of chemistry and have critical implications for human survival and well-being. (JR)

  6. A Seven-Year Major and Trace Element Study of Rain Water in the Barcés River Watershed, A Coruña, NW Spain

    Science.gov (United States)

    Delgado, Jordi; Cereijo-Arango, José Luis; Juncosa-Rivera, Ricardo

    2016-04-01

    Precipitation constitutes an important source of soluble materials to surface waters and, in areas where they are diluted precipitation (either dry or wet) it can be the most relevant solute source. Certain trace elements may have a limited natural availability in soils and rocks although they can be important with respect the operation of different biogeochemical cycles, for the computation of local/regional atmospheric pollutant loads or from the global mass budget. In the present study we report the results obtained in a long-lasting (December 2008-December 2015) monitoring survey of the chemical composition of bulk precipitation as monthly-integrated samples taken at the headwaters of the Barcés river watershed (A Coruña, Spain). This location was selected based on the necessity of quantification of the chemical composition and elemental loads associated with the different water types (stream water, ground water and precipitation) contributing to the flooding of the Meirama lake. Available data includes information on meteorological parameters (air temperature, relative humidity, atmospheric pressure, wind speed and direction, total and PAR radiation and precipitation) as well as a wide bundle of physico-chemical (pH, redox, electrical conductivity, alkalinity, Li, Na, K, Mg, Ca, Sr, Mn, Fe, NH4, Cs, Rb, Ba, Zn, Cu, Sb, Ni, Co, Cr, V, Cd, Ag, Pb, Se, Hg, Ti, Sn, U, Mo, F, Cl, Br, SO4, NO3, NO2, Al, As, PO4, SIO2, B, O2, DIC, DOC) and isotopic (18Ov-smow and 2Hv-smow) constituents. The average pH of local precipitation is 5.6 (n=65) which is consistent with the expected value for natural, unpolluted rain water. Most of the studied elements (eg. Na, Ca, K, Mg, SiO2, etc.) shows significant increases in their concentration in the dry period of the year. That points towards a more significant contribution of dry deposition in these periods compared with the wet ones. The average electrical conductivity is about 67 S/cm while the average chloride

  7. Integrated Water Basin Management Including a Large Pit Lake and a Water Supply Reservoir: The Mero-Barcés Basin

    Science.gov (United States)

    Delgado, Jordi; Juncosa-Rivera, Ricardo; Hernández-Anguiano, Horacio; Muñoz-Ibáñez, Andrea

    2016-04-01

    use of lake water is acceptable from different points of view (water quality, legal constrains, etc.). Our results indicate that the joint use of the lake/reservoir system is feasible. Based on this and other complementary study, the basin water authorities has developed a project by which a 2.1 km uptake tunnel will be excavated in the next years to drain water from the lake towards the Barcés river and complement the water supply necessities of the Abegondo-Cecebre reservoir in case of hydric emergencies.

  8. Division of Biogeochemical Ecology FY-1985 highlights

    International Nuclear Information System (INIS)

    The primary goal of the Division is to understand the various biogeochemical processes, both in aquatic and terrestrial systems, that occur in the southeastern United States, including the Savannah River Plant. Both applied and basic approaches are being used to enhance understanding of the biogeochemical cycles of certain elements and trace contaminants, either in inorganic or organic states, and in stable or radioactive forms. Specific examples of studies conducted during the past year include: (1) ecosystem modeling and implementation of a computer model to predict the fate, behavior and transport of heavy metals and radionuclides in SRP streams, (2) laboratory and greenhouse studies on the environmental chemistry of an organo-borate in the soil-plant system, (3) research on the behavior and fate of actinide elements and other long-lived radioisotopes in terrestrial and aquatic ecosystems, and (4) responses of pine plantations to organic waste fertilization. Major findings of these studies are summarized. The chemical speciation-transport model MEXAMS (Metal Exposure Analysis Modeling System) was implemented to provide predictive capabilities for the transport of heavy metals and radionuclides in SRP aquatic systems. The basic components of the model are the geochemical model MINTEQ, and an aquatic exposure assessment model, EXAMS. The interfacing of these two models provides information on the complex chemistry and behavior of metals, as well as the transport processes influencing their migration and ultimate fate in aquatic systems. Test simulations for Cd, Cu, and Ni speciation in various SRP streams were conducted. The results indicated that the MEXAMS model will be a useful tool in predicting the transport and fate of metals in SRP streams

  9. Public perception of chemistry

    OpenAIRE

    Stražar, Alenka

    2015-01-01

    The thesis deals with the perception of chemistry among the public, which reflects the stereotypes that people have about chemistry. It presents the existing classification of stereotypes about chemistry and their upgrade. An analysis of movies that reflect the existing perception of chemistry in the public is written. Literature on selected aspects of the application of chemistry in movies is collected and analyzed. A qualification of perception of chemistry in the movies is presented based ...

  10. Science Update: Inorganic Chemistry.

    Science.gov (United States)

    Rawls, Rebecca

    1981-01-01

    Describes areas of inorganic chemistry which have changed dramatically in the past year or two, including photochemistry, electrochemistry, organometallic complexes, inorganic reaction theory, and solid state chemistry. (DS)

  11. Biomedical Research Group, Health Division annual report 1954

    Energy Technology Data Exchange (ETDEWEB)

    Langham, W.H.; Storer, J.B.

    1955-12-31

    This report covers the activities of the Biomedical Research Group (H-4) of the Health Division during the period January 1 through December 31, 1954. Organizationally, Group H-4 is divided into five sections, namely, Biochemistry, Radiobiology, Radiopathology, Biophysics, and Organic Chemistry. The activities of the Group are summarized under the headings of the various sections. The general nature of each section`s program, publications, documents and reports originating from its members, and abstracts and summaries of the projects pursued during the year are presented.

  12. Nuclear Physics division progress report

    International Nuclear Information System (INIS)

    Work undertaken by the Nuclear Physics Division of AERE, Harwell during 1980 is presented under the headings: (1) Nuclear Data and Technology for Nuclear Power. (2) Nuclear Studies. (3) Applications of Nuclear and Associated Techniques. (4) Accelerator Operation, Maintenance and Development. Reports, publications and conference papers presented during the period are given and members of staff listed. (U.K.)

  13. Environmental Transport Division: 1979 report

    Energy Technology Data Exchange (ETDEWEB)

    Murphy, C.E. Jr.; Schubert, J.F.; Bowman, W.W.; Adams, S.E.

    1980-03-01

    During 1979, the Environmental Transport Division (ETD) of the Savannah River Laboratory conducted atmospheric, terrestrial, aquatic, and marine studies, which are described in a series of articles. Separate abstracts were prepared for each. Publications written about the 1979 research are listed at the end of the report.

  14. Nuclear Physics Division progress report

    International Nuclear Information System (INIS)

    The 1983 progress report of the Nuclear Physics Division, UKAEA Harwell, is divided into four main topics. These are a) nuclear data and technology for nuclear power; b) nuclear studies; c) applications of nuclear and associated techniques, including ion beam techniques and moessbauer spectroscopy; and d) accelerator operation, maintenance and development. (U.K.)

  15. Manpower Division Looks at CETA

    Science.gov (United States)

    American Vocational Journal, 1977

    1977-01-01

    The Manpower Division at the American Vocational Association (AVA) convention in Houston was concerned about youth unemployment and about the Comprehensive Employment and Training Act (CETA)--its problems and possibilities. The panel discussion reported here reveals some differing perspectives and a general consensus--that to improve their role in…

  16. Environmental Transport Division: 1979 report

    International Nuclear Information System (INIS)

    During 1979, the Environmental Transport Division (ETD) of the Savannah River Laboratory conducted atmospheric, terrestrial, aquatic, and marine studies, which are described in a series of articles. Separate abstracts were prepared for each. Publications written about the 1979 research are listed at the end of the report

  17. Home | Division of Cancer Prevention

    Science.gov (United States)

    Our Research The Division of Cancer Prevention (DCP) conducts and supports research to determine a person's risk of cancer and to find ways to reduce the risk. This knowledge is critical to making progress against cancer because risk varies over the lifespan as genetic and epigenetic changes can transform healthy tissue into cancer. |

  18. 75 FR 70031 - Antitrust Division

    Science.gov (United States)

    2010-11-16

    ... Antitrust Division Notice Pursuant to the National Cooperative Research and Production Act of 1993--Open... National Cooperative Research and Production Act of 1993, 15 U.S.C. 4301 et seq. (``the Act''), Open Axis... branding program based upon distinctive trademarks to create high customer awareness of, demand for,...

  19. Trace Chemistry

    Science.gov (United States)

    Radhakrishnan, Krishnan; Whitefield, Philip

    1999-01-01

    The goals of the trace chemistry group were to identify the processes relevant to aerosol and aerosol precursor formation occurring within aircraft gas turbine engines; that is, within the combustor, turbine, and nozzle. The topics of discussion focused on whether the chemistry of aerosol formation is homogeneous or heterogeneous; what species are important for aerosol and aerosol precursor formation; what modeling/theoretical activities to pursue; what experiments to carry out that both support modeling activities and elucidate fundamental processes; and the role of particulates in aerosol and aerosol precursor formation. The consensus of the group was that attention should be focused on SO2, SO3, and aerosols. Of immediate concern is the measurement of the concentration of the species SO3, SO2, H2SO4 OH, HO2, H2O2, O, NO, NO2, HONO, HNO3, CO, and CO2 and particulates in various engines, both those currently in use and those in development. The recommendation was that concentration measurements should be made at both the combustor exit and the engine exit. At each location the above species were classified into one of four categories of decreasing importance, Priority I through IV, as follows: Combustor exit: Priority I species - SO3:SO2 ratio, SO3, SO2, and particulates; Priority II species: OH and O; Priority III species - NO and NO2; and Priority IV species - CO and CO2. For the Engine exit: Priority I species - SO3:SO2 ratio, SO3, SO2,H2SO4, and particulates; Priority II species: OH,HO2, H2O2, and O; Priority III species - NO, NO2, HONO, and HNO3; and Priority IV species - CO and CO2. Table I summarizes the anticipated concentration range of each of these species. For particulate matter, the quantities of interest are the number density, size distribution, and composition. In order to provide data for validating multidimensional reacting flow models, it would be desirable to make 2-D, time-resolved measurements of the concentrations of the above species and

  20. Migration chemistry

    International Nuclear Information System (INIS)

    Migration chemistry, the influence of chemical -, biochemical - and physico-chemical reactions on the migration behaviour of pollutants in the environment, is an interplay between the actual natur of the pollutant and the characteristics of the environment, such as pH, redox conditions and organic matter content. The wide selection of possible pollutants in combination with varying geological media, as well as the operation of different chemical -, biochemical - and physico-chemical reactions compleactes the prediction of the influence of these processes on the mobility of pollutants. The report summarizes a wide range of potential pollutants in the terrestrial environment as well as a variety of chemical -, biochemical - and physico-chemical reactions, which can be expected to influence the migration behaviour, comprising diffusion, dispersion, convection, sorption/desorption, precipitation/dissolution, transformations/degradations, biochemical reactions and complex formation. The latter comprises the complexation of metal ions as well as non-polar organics to naturally occurring organic macromolecules. The influence of the single types of processes on the migration process is elucidated based on theoretical studies. The influence of chemical -, biochemical - and physico-chemical reactions on the migration behaviour is unambiguous, as the processes apparently control the transport of pollutants in the terrestrial environment. As the simple, conventional KD concept breaks down, it is suggested that the migration process should be described in terms of the alternative concepts chemical dispersion, average-elution-time and effective retention. (AB) (134 refs.)

  1. Physics division annual report 2000

    International Nuclear Information System (INIS)

    This report summarizes the research performed in 2000 in the Physics Division of Argonne National Laboratory. The Division's programs include operation of ATLAS as a national user facility, nuclear structure and reaction research, nuclear theory and medium energy physics research, and accelerator research and development. As the Nuclear Science Advisory Committee and the nuclear science community create a new long range plan for the field in 2001, it is clear that the research of the Division is closely aligned with and continues to help define the national goals of our field. The NSAC 2001 Long Range Plan recommends as the highest priority for major new construction the Rare Isotope Accelerator (RIA), a bold step forward for nuclear structure and nuclear astrophysics. The accelerator R and D in the Physics Division has made major contributions to almost all aspects of the RIA design concept and the community was convinced that this project is ready to move forward. 2000 saw the end of the first Gammasphere epoch at ATLAS, One hundred Gammasphere experiments were completed between January 1998 and March 2000, 60% of which used the Fragment Mass Analyzer to provide mass identification in the reaction. The experimental program at ATLAS then shifted to other important research avenues including proton radioactivity, mass measurements with the Canadian Penning Trap and measurements of high energy gamma-rays in nuclear reactions with the MSU/ORNL/Texas A and M BaF2 array. ATLAS provided 5460 beam-research hours for user experiments and maintained an operational reliability of 95%. Radioactive beams accounted for 7% of the beam time. ATLAS also provided a crucial test of a key RIA concept, the ability to accelerate multiple charge states in a superconducting heavy-ion linac. This new capability was immediately used to increase the performance for a scheduled experiment. The medium energy program continued to make strides in examining how the quark-gluon structure of

  2. Proceedings of the DAE-BRNS theme meeting on chemistry in atomic energy programme

    International Nuclear Information System (INIS)

    The pivotal role played by chemistry in all the stages of atomic energy programme, right from mineral exploration, materials processing, fuel fabrication, coolant, control and structural materials, reactor chemistry, fuel recycling and actinide partitioning to radioactive waste management, has been explicitly demonstrated in the last few decades. The discoveries and developments in chemical sciences that have contributed to the formulation and successful implementation of our nuclear programme are enormous. It is to the credit of all our colleagues of Department of Atomic Energy to reckon the chronology of mile stones in our programme and how they place our nation on the global map of nuclear energy. The theme meeting on Chemistry in Atomic Energy Programme is an outcome of the thinking of some of our colleagues in BARC to take stock of the accomplishments made hitherto and to prepare a roadmap to meet the challenges of future advanced reactor regimes, while safeguarding the strategic interests of mankind. It is not out-of-context to record here that India, with its rich experience, is poised to play a major role in the global nuclear power programme, through bilateral international collaborations as well as on the platform of IAEA. Papers relevant to INIS are indexed separately

  3. 76 FR 6499 - Proposal Review Panel for Chemistry; Notice of Meeting

    Science.gov (United States)

    2011-02-04

    ... FOUNDATION Proposal Review Panel for Chemistry; Notice of Meeting In accordance with the Federal Advisory...: Name: Cyber Review of Phase I Centers for Chemical Innovation (CCI), 2011 Awardees by NSF Division of Chemistry (1191). Dates and Times: February 17, 2011; 8 a.m.-6 p.m. February 18, 2011; 8 a.m.-5 p.m....

  4. Introducing Undergraduates to Research Using a Suzuki-Miyaura Cross-Coupling Organic Chemistry Miniproject

    Science.gov (United States)

    Oliveira, Deyvid G. M.; Rosa, Clarissa H.; Vargas, Bruna P.; Rosa, Diego S.; Silveira, Ma´rcia V.; de Moura, Neusa F.; Rosa, Gilber R.

    2015-01-01

    A five-week miniproject is described for an upper-division experimental organic chemistry course. The activities include synthesis of a phenylboronic acid via a Grignard reaction and its use in a Suzuki-Miyaura cross-coupling reaction. Technical skills and concepts normally presented in practical organic chemistry courses are covered, including…

  5. Challenges in Chemistry Graduate Education: A Workshop Summary

    Science.gov (United States)

    National Academies Press, 2012

    2012-01-01

    Chemistry graduate education is under considerable pressure. Pharmaceutical companies, long a major employer of synthetic organic chemists, are drastically paring back their research divisions to reduce costs. Chemical companies are opening new research and development facilities in Asia rather than in the United States to take advantage of…

  6. Physiographic divisions of the conterminous U. S.

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — This is a polygon coverage of Physiographic Divisions in the conterminous United States. It was automated from Fenneman's 1:7,000,000-scale map, "Physical Divisions...

  7. Teaching chemistry with neutron activation analysis at Dalhousie University

    International Nuclear Information System (INIS)

    The Dalhousie University SLOWPOKE-2 Reactor (DUSR) has been operating since July 1976 and has proven to be an invaluable tool in many teaching programs. These reactors are inherently safe and are designed to serve teaching and research needs of the universities, research centers, hospitals, etc. Since the DUSR has been, from its inception, associated with the Trace Analysis Research Centre, which is the Analytical Chemistry Division of the Department of Chemistry, the main thrust of its use continues to be in the field of nuclear analytical chemistry. Both teaching and research programs involve trace element analysis by neutron activation

  8. Reactor Engineering Division annual report

    International Nuclear Information System (INIS)

    This report summarizes main research achievements in the 48th fiscal year which were made by Reactor Engineering Division consisted of eight laboratories and Computing Center. The major research and development projects, with which the research programmes in the Division are associated, are development of High Temperature Gas Cooled Reactor for multi-purpose use, development of Liquid Metal Fast Breeder Reactor conducted by Power Reactor and Nuclear Fuel Development Corporation, and Engineering Research Programme for Thermonuclear Fusion Reactor. Many achievements are reported in various research items such as nuclear data and group constants, theoretical method and code development, integral experiment and analysis, shielding, heat transfer and fluid dynamics, reactor and nuclear instrumentation, dynamics analysis and control method development, fusion reactor technology and activities of Computing Center. (auth.)

  9. Division of solid state physics

    International Nuclear Information System (INIS)

    This report gives a survey of the present research projects at the division of solid state physics, Inst. of Technology, Uppsala University. The projects fall within the fields of magnetism, i.e. spin glasses, ordered magnetic structures and itinerant electron magnetism, and optics, i.e. properties of crystalline and amorphous materials for selective transmission and absorption in connection with energy-related research. (author)

  10. Ontario Hydro Research Division, 1980

    International Nuclear Information System (INIS)

    The work of the Research Division of Ontario Hydro provides technical and scientific support for the engineering and operation of a power system that includes hydraulic, fossil-fired, and nuclear generation. It also relates to the transmission and distribution of electricity and to the need to help customers use electricity with safety and economy. Among the examples of projects given are qualification of CANDU heat transport system components, pressure tube replacement, steam generator integrity, testing for earthquake resistance, and radioactive waste disposal

  11. Building an Academic Colorectal Division

    OpenAIRE

    Koltun, Walter A

    2014-01-01

    Colon and rectal surgery is fully justified as a valid subspecialty within academic university health centers, but such formal recognition at the organizational level is not the norm. Creating a colon and rectal division within a greater department of surgery requires an unfailing commitment to academic concepts while promulgating the improvements that come in patient care, research, and teaching from a specialty service perspective. The creation of divisional identity then opens the door for...

  12. Materials division facilities and equipment

    International Nuclear Information System (INIS)

    The research activities of the Division at the Petten Establishment have the aims of characterising the properties of high temperature materials in industrial process environments and of understanding the structures involved in order to gain an insight into behavioural mechanisms. Metallic materials fall within the scope of the programme; the activities are, at present, almost entirely concerned with austenitic steels and nickel based alloys. Starting in 1984, advanced ceramic materials will be studied as well. The equipment available permits the study of mechanical properties in controlled gaseous environments, of the rates and mechanisms of corrosive reactions between materials and those environments, and of the surface and bulk structures by advanced physical techniques. Special preparation and treatment techniques are available. The Division has developed a Data Bank on high temperature alloys. It also operates an information Centre, the activities of which include the organisation of scientific meetings, the commissioning of ''state of the art'' studies on topics in the field of high temperature materials and their applications and the development of a inventory of current research activities in the field in Europe. This booklet is intended to present the facilities and services of the Division to the organizations which are interested in its programmes of work

  13. Industrial Chemistry and School Chemistry: Making Chemistry Studies More Relevant

    Science.gov (United States)

    Hofstein, Avi; Kesner, Miri

    2006-01-01

    In this paper, we present the development and implementation over the period of more than 15 years of learning materials focusing on industrial chemistry as the main theme. The work was conducted in the Department of Science Teaching at the Weizmann Institute of Science, Israel. The project's general goal was to teach chemistry concepts in the…

  14. Division of household tasks and financial management

    NARCIS (Netherlands)

    Antonides, G.

    2011-01-01

    Both the standard economic model and bargaining theory make predictions about financial management and the division of household labor between household partners. Using a large Internet survey, we have tested several predictions about task divisions reported by Dutch household partners. The division

  15. Química de (nano)materiais Nano) materials chemistry

    OpenAIRE

    Aldo J. G. Zarbin

    2007-01-01

    An overview of different aspects related to Materials and Nanomaterials Chemistry is presented and discussed. The insertion of this field in Brazil is evaluated on the basis of the communications presented on the 30th Annual Meeting of the Brazilian Chemical Society (SBQ). The importance of the Materials Chemistry Division of SBQ for the growth and consolidation of Materials Chemistry in Brazil is also discussed.

  16. From Matter to Life:Chemistry?Chemistry!

    Institute of Scientific and Technical Information of China (English)

    Jean-Marie; LEHN

    2007-01-01

    1 Results Animate as well as inanimate matter,living organisms as well as materials,are formed of molecules and of the organized entities resulting from the interaction of molecules with each other.Chemistry provides the bridge between the molecules of inanimate matter and the highly complex molecular architectures and systems which make up living organisms. Synthetic chemistry has developed a very powerful set of methods for constructing ever more complex molecules.Supramolecular chemistry seeks to con...

  17. Green chemistry: A tool in Pharmaceutical Chemistry

    OpenAIRE

    Smita Talaviya; Falguni Majumdar

    2012-01-01

    Green chemistry expresses an area of research developing from scientific discoveries about pollution awareness and it utilizes a set of principles that reduces or eliminates the use or generation of hazardous substances in all steps of particular synthesis or process. Chemists and medicinal scientists can greatly reduce the risk to human health and the environment by following all the valuable principles of green chemistry. The most simple and direct way to apply green chemistry in pharmaceut...

  18. Chemistry Rocks: Redox Chemistry as a Geologic Tool.

    Science.gov (United States)

    Burns, Mary Sue

    2001-01-01

    Applies chemistry to earth science, uses rocks in chemistry laboratories, and teaches about transition metal chemistry, oxidation states, and oxidation-reduction reactions from firsthand experiences. (YDS)

  19. A decade of Radiometallurgy Division

    International Nuclear Information System (INIS)

    The main thrust of the Research and Development (R and D) activities of the Radiometallurgy Division of the Bhabha Atomic Research Centre is on (1) R and D work and production of plutonium bearing nuclear fuels, (2) Post-Irradiation Examination (PIE) of fuels and structural materials, and (3) failure analysis of power reactor components. The main activities and achievements of the Division during the decade beginning from April 1978 are highlighted and the new thrust areas oriented towards installing a series of 235 MWe and 500 MWe PHWR units and prototype fast breeder reactor (PFBR) of 500 MWe capacity during the next 15 years are described in brief. The major achievements during last ten years are: (1) development and irradiation testing of mixed uranium plutonium oxide (MOX), as an alternative fuel for boiling water reactors at Tarapur, (2) setting up of a 10 tons/year pilot plant for fabrication of oxide fuels and technical support for setting up such plants, (3) development and production of plutonium rich, advanced mixed uranium plutonium monocarbide driver fuel for the Fast Breeder Test Reactor comm issioned at Kalpakkam, (4) development and fabrication of Al-233U plate fuel elements for KAMINI reactor, (5) PIE of fuel elements from Indian reactors in operation, (6) failure analysis of reactor components, and (7) in-pile performance analysis of power reactor structural materials. A list of publications during 1978-88 by the scientists of the Division is given at the end. The publications are listed under the headings: (1) fuels, (2) non-destructive evaluation, (3) engineering development, (4) welding development, (5) characterization and property evaluation, and (6) post irradiation examination. The entire text is illustrated with a number of diagrams and photographs - many of them coloured . (M.G.B.)

  20. Physics division annual report - 1999

    International Nuclear Information System (INIS)

    This report summarizes the research performed in the past year in the Argonne Physics Division. The Division's programs include operation of ATLAS as a national heavy-ion user facility, nuclear structure and reaction research with beams of heavy ions, accelerator research and development especially in superconducting radio frequency technology, nuclear theory and medium energy nuclear physics. The Division took significant strides forward in its science and its initiatives for the future in the past year. Major progress was made in developing the concept and the technology for the future advanced facility of beams of short-lived nuclei, the Rare Isotope Accelerator. The scientific program capitalized on important instrumentation initiatives with key advances in nuclear science. In 1999, the nuclear science community adopted the Argonne concept for a multi-beam superconducting linear accelerator driver as the design of choice for the next major facility in the field a Rare Isotope Accelerator (RIA) as recommended by the Nuclear Science Advisory Committee's 1996 Long Range Plan. Argonne has made significant R and D progress on almost all aspects of the design concept including the fast gas catcher (to allow fast fragmentation beams to be stopped and reaccelerated) that in large part, defined the RIA concept the superconducting rf technology for the driver accelerator, the multiple-charge-state concept (to permit the facility to meet the design intensity goals with existing ion-source technology), and designs and tests of high-power target concepts to effectively deal with the full beam power of the driver linac. An NSAC subcommittee recommended the Argonne concept and set as tie design goal Uranium beams of 100-kwatt power at 400 MeV/u. Argonne demonstrated that this goal can be met with an innovative, but technically in-hand, design

  1. Progress report : Technical Physics Division

    International Nuclear Information System (INIS)

    The research and development work carried out in the Technical Physics Division of the Bhabha Atomic Research Centre, Bombay, is reported. Some of the achievements are: (1) fabrication of mass spectrometers for heavy water analysis and lithium 6/7 isotope ratio measurement, (2) fabrication of electronic components for mass spectrometers, (3) growing of sodium iodide crystals for radiation detectors, (4) development of sandwich detectors comprising of NaI(Tl) and CaI(Na), (5) fabrication of mass spectrometer type leak detectors and (6) fabrication of the high vacuum components of the vacuum system of the variable energy cyclotron based at Calcutta. (M.G.B.)

  2. Code division multiple access (CDMA)

    CERN Document Server

    Buehrer, R Michael

    2006-01-01

    This book covers the basic aspects of Code Division Multiple Access or CDMA. It begins with an introduction to the basic ideas behind fixed and random access systems in order to demonstrate the difference between CDMA and the more widely understood TDMA, FDMA or CSMA. Secondly, a review of basic spread spectrum techniques are presented which are used in CDMA systems including direct sequence, frequency-hopping and time-hopping approaches. The basic concept of CDMA is presented, followed by the four basic principles of CDMA systems that impact their performance: interference averaging, universa

  3. Crevice chemistry estimation from bulk water chemistry

    International Nuclear Information System (INIS)

    Since the first PWR plant in Japan started commercial operation in 1970, 22 plants are running in Japan as of the end of 1994. The main purpose of secondary water chemistry control is to minimize the corrosion possibility of the secondary system equipment, especially steam generators (SG). To achieve this objective, much effort has been concentrated on improving secondary water chemistry control. As a result of this effort, the recent secondary water chemistry in Japanese plants is well maintained in every stage of operation. However, to ensure and improve the reliability of SG, it is necessary to control crevice environments, which are located at tube/tube support plate intersections and under the sludge pile on the tube sheet. According to recent crevice monitoring examination results, the concentration behavior impurities in SG bulk water at the crevice is different for each species, and SG bulk water and crevice chemical compositions are not always equal. From these results, to control the crevice chemistry, improving bulk water chemistry control methods and a new type of molar ratio control index is needed. This paper introduces a brief summary of a recent crevice chemistry evaluation technique and bulk water chemistry control method, which is employed for crevice chemistry control, based on crevice monitoring examination results

  4. Green chemistry: A tool in Pharmaceutical Chemistry

    Directory of Open Access Journals (Sweden)

    Smita Talaviya

    2012-07-01

    Full Text Available Green chemistry expresses an area of research developing from scientific discoveries about pollution awareness and it utilizes a set of principles that reduces or eliminates the use or generation of hazardous substances in all steps of particular synthesis or process. Chemists and medicinal scientists can greatly reduce the risk to human health and the environment by following all the valuable principles of green chemistry. The most simple and direct way to apply green chemistry in pharmaceuticals is to utilize eco-friendly, non-hazardous, reproducible and efficient solvents and catalysts in synthesis of drug molecules, drug intermediates and in researches involving synthetic chemistry. Microwave synthesis is also an important tool of green chemistry by being an energy efficient process.

  5. Organometallic Chemistry of Molybdenum.

    Science.gov (United States)

    Lucas, C. Robert; Walsh, Kelly A.

    1987-01-01

    Suggests ways to avoid some of the problems students have learning the principles of organometallic chemistry. Provides a description of an experiment used in a third-year college chemistry laboratory on molybdenum. (TW)

  6. CHINESE JOURNAL OF CHEMISTRY

    Institute of Scientific and Technical Information of China (English)

    2000-01-01

    @@Chinese Journal of Chemistry is an international journal published in English by the Chinese Chemical Society with its editorial office hosted by Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences.

  7. Environmental chemistry: Volume A

    Energy Technology Data Exchange (ETDEWEB)

    Yen, T.F.

    1999-08-01

    This is an extensive introduction to environmental chemistry for engineering and chemical professionals. The contents of Volume A include a brief review of basic chemistry prior to coverage of litho, atmo, hydro, pedo, and biospheres.

  8. Frontiers in Gold Chemistry

    OpenAIRE

    Mohamed, Ahmed A.

    2015-01-01

    Basic chemistry of gold tells us that it can bond to sulfur, phosphorous, nitrogen, and oxygen donor ligands. The Frontiers in Gold Chemistry Special Issue covers gold complexes bonded to the different donors and their fascinating applications. This issue covers both basic chemistry studies of gold complexes and their contemporary applications in medicine, materials chemistry, and optical sensors. There is a strong belief that aurophilicity plays a major role in the unending applications of g...

  9. Green Chemistry and Education.

    Science.gov (United States)

    Hjeresen, Dennis L.; Schutt, David L.; Boese, Janet M.

    2000-01-01

    Many students today are profoundly interested in the sustainability of their world. Introduces Green Chemistry and its principles with teaching materials. Green Chemistry is the use of chemistry for pollution prevention and the design of chemical products and processes that are environmentally benign. (ASK)

  10. Environmental Chemistry Activities.

    Science.gov (United States)

    Jackland, Thomas; And Others

    The authors of this curriculum supplement believe in a laboratory approach to chemistry and express the feeling that environmental chemistry provides the students an opportunity to apply theoretical chemistry to important practical problems. There are eighteen activities presented, each accompanied with behavioral objectives, one or more suggested…

  11. Facets of coordination chemistry

    CERN Document Server

    Agarwala, BV

    1993-01-01

    A concise account of coordination chemistry since its inception is given here together with some of the newer significant facets. This book covers a broad spectrum of various topics on Environment, Cyclic Voltammetry, Chromatography, Metal Complexes of biological interest, Alkoxides, NMR spectroscopy and others. These are useful to the scientific community engaged in the field of Inorganic Chemistry and Analytical Chemistry.

  12. American Association for Clinical Chemistry

    Science.gov (United States)

    ... indispensable patient care tool. Learn more IN CLINICAL CHEMISTRY ddPCR Quantification of Lymphoma Mutations Researchers have developed ... Online Harmonization.net Commission on Accreditation in Clinical Chemistry American Board of Clinical Chemistry Clinical Chemistry Trainee ...

  13. The New Color of Chemistry: Green Chemistry

    Directory of Open Access Journals (Sweden)

    Zuhal GERÇEK

    2012-01-01

    Full Text Available Green chemistry which is the new application of chemistry rules provides solutions to problems that mankind is faced with climate changes, sustainable agriculture, energy, toxics, depletion of natural sources e.g. designing new chemicals and processes that production and utilization of hazardous matters. So, it is the indispensible tool for sustainable development. Current and future chemists should consider the human health and ecological issues in their professional life. In order to provide a solution for this requirement, green chemistry rules and under standings should be primarily taken in the university curriculum and at all educational levels.

  14. The 1988 Leti Division progress report

    International Nuclear Information System (INIS)

    The 1988 progress report of the CEA's LETI Division (Division of Electronics, Technology and Instrumentation, France) is presented. The missions of LETI Division involve military and nuclear applications of electronics and fundamental research. The research programs developed in 1988 are the following: materials and components, non-volatile silicon memories, silicon-over-insulator, integrated circuits technologies, common experimental laboratory (opened to the European community), mass memories, photodetectors, micron sensors and flat screens

  15. Spatial Divisions and Fertility in India

    OpenAIRE

    Vijayan Pillai; Mashooq Salehin

    2012-01-01

    The Indian subcontinent can be divided into four geographical divisions. In this paper, we characterize three of the four divisions; the Northern Plains, the Deccan Plateau, and the Northern Mountains or the Himalayan as regions with dissimilar climatic and physical resources. It is argued that human adaptations to these variations would be varied by differences in social organization of production and consumption resulting in differences in fertility differences across the three divisions. W...

  16. Current programmes of Metallurgy Division (1991)

    International Nuclear Information System (INIS)

    Current research and development programmes of the Metallurgy Division are listed under the headings: 1)Thrust Areas, 2)High Temperature Materials Section, 3)Chemical Metallurgy Section, 4)Metallurgical Thermochemistry Section, 5)Physical Metallurgy Section, 6)Mechanical Metallurgy Section, 7)Corrosion Metallurgy Section, 8)Electrochemical Science and Technology Section, 9)Ceramics Section, and 10)Fabrication and Maintenance Group. A list of equipment in the Division and a list of sciientific personnel of the Division are also given. (M.G.B.)

  17. The division of labour under uncertainty

    OpenAIRE

    Wadeson, Nigel

    2013-01-01

    Reductions in the division of labour are a significant feature of modern developments in work organisation. It has been recognised that a reduced division of labour can have the advantages of job enrichment and lower coordination costs. In this paper it is shown how advantages from a lesser division of labour can stem from the flow of work between different sets of resources where the work rates of individual production stages are subject to uncertainties. Both process and project-based work ...

  18. Surface chemistry essentials

    CERN Document Server

    Birdi, K S

    2013-01-01

    Surface chemistry plays an important role in everyday life, as the basis for many phenomena as well as technological applications. Common examples range from soap bubbles, foam, and raindrops to cosmetics, paint, adhesives, and pharmaceuticals. Additional areas that rely on surface chemistry include modern nanotechnology, medical diagnostics, and drug delivery. There is extensive literature on this subject, but most chemistry books only devote one or two chapters to it. Surface Chemistry Essentials fills a need for a reference that brings together the fundamental aspects of surface chemistry w

  19. Fundamentals of reactor chemistry

    International Nuclear Information System (INIS)

    In the Nuclear Engineering School of JAERI, many courses are presented for the people working in and around the nuclear reactors. The curricula of the courses contain also the subject material of chemistry. With reference to the foreign curricula, a plan of educational subject material of chemistry in the Nuclear Engineering School of JAERI was considered, and the fundamental part of reactor chemistry was reviewed in this report. Since the students of the Nuclear Engineering School are not chemists, the knowledge necessary in and around the nuclear reactors was emphasized in order to familiarize the students with the reactor chemistry. The teaching experience of the fundamentals of reactor chemistry is also given. (author)

  20. Physics division annual report 2005

    International Nuclear Information System (INIS)

    This report highlights the research performed in 2005 in the Physics Division of Argonne National Laboratory. The Division's programs include operation of ATLAS as a national user facility, nuclear structure and reaction research, nuclear theory, medium energy nuclear research and accelerator research and development. The mission of Nuclear Physics is to understand the origin, evolution and structure of baryonic matter in the universe--the matter that makes up stars, planets and human life itself. The Division's research focuses on innovative new ways to address this mission and 2005 was a year of great progress. One of the most exciting developments is the initiation of the Californium Rare Ion Breeder Upgrade, CARIBU. By combining a Cf-252 fission source, the gas catcher technology developed for rare isotope beams, a high-resolution isobar separator, and charge breeding ECR technology, CARIBU will make hundreds of new neutron-rich isotope beams available for research. The cover illustration shows the anticipated intensities of low-energy beams that become available for low-energy experiments and for injection into ATLAS for reacceleration. CARIBU will be completed in early 2009 and provide us with considerable experience in many of the technologies developed for a future high intensity exotic beam facility. Notable results in research at ATLAS include a measurement of the isomeric states in 252No that helps pin down the single particle structure expected for superheavy elements, and a new low-background measurement of 16N beta-decay to determine the 12C(α, γ)16O reaction rate that is so important in astrophysical environments. Precise mass measurements shed new light on the unitarity of the quark weak-mixing matrix in the search for physics beyond the standard model. ATLAS operated for 4686 hours of research in FY2005 while achieving 95% efficiency of beam delivery for experiments. In Medium-Energy Physics, radium isotopes were trapped in an atom trap for the

  1. Physics division annual report 2005.

    Energy Technology Data Exchange (ETDEWEB)

    Glover, J.; Physics

    2007-03-12

    This report highlights the research performed in 2005 in the Physics Division of Argonne National Laboratory. The Division's programs include operation of ATLAS as a national user facility, nuclear structure and reaction research, nuclear theory, medium energy nuclear research and accelerator research and development. The mission of Nuclear Physics is to understand the origin, evolution and structure of baryonic matter in the universe--the matter that makes up stars, planets and human life itself. The Division's research focuses on innovative new ways to address this mission and 2005 was a year of great progress. One of the most exciting developments is the initiation of the Californium Rare Ion Breeder Upgrade, CARIBU. By combining a Cf-252 fission source, the gas catcher technology developed for rare isotope beams, a high-resolution isobar separator, and charge breeding ECR technology, CARIBU will make hundreds of new neutron-rich isotope beams available for research. The cover illustration shows the anticipated intensities of low-energy beams that become available for low-energy experiments and for injection into ATLAS for reacceleration. CARIBU will be completed in early 2009 and provide us with considerable experience in many of the technologies developed for a future high intensity exotic beam facility. Notable results in research at ATLAS include a measurement of the isomeric states in {sup 252}No that helps pin down the single particle structure expected for superheavy elements, and a new low-background measurement of {sup 16}N beta-decay to determine the {sup 12}C({alpha},{gamma}){sup 16}O reaction rate that is so important in astrophysical environments. Precise mass measurements shed new light on the unitarity of the quark weak-mixing matrix in the search for physics beyond the standard model. ATLAS operated for 4686 hours of research in FY2005 while achieving 95% efficiency of beam delivery for experiments. In Medium-Energy Physics, radium

  2. Power Efficient Division and Square Root Unit

    DEFF Research Database (Denmark)

    Liu, Wei; Nannarelli, Alberto

    2012-01-01

    Although division and square root are not frequent operations, most processors implement them in hardware to not compromise the overall performance. Two classes of algorithms implement division or square root: digit-recurrence and multiplicative (e.g., Newton-Raphson) algorithms. Previous work...... shows that division and square root units based on the digit-recurrence algorithm offer the best tradeoff delay-area-power. Moreover, the two operations can be combined in a single unit. Here, we present a radix-16 combined division and square root unit obtained by overlapping two radix-4 stages. The...

  3. Major Programs | Division of Cancer Prevention

    Science.gov (United States)

    The Division of Cancer Prevention supports major scientific collaborations, research networks, investigator-initiated grants, postdoctoral training, and specialized resources across the United States. |

  4. Annual report 1985 Chemistry Department

    International Nuclear Information System (INIS)

    This report contains a brief survey of the main activities in the Chemistry Department. All particles and reports published and lectures given in 1985 are presented. The facilities and equipment are mentioned briefly. The activities are divided into the following groups: radioisotope chemistry, analytical- and organic chemistry, environmental chemistry, polymer chemistry, geochemistry and waste disposal, radical chemistry, positron annihilation, mineral processing, and general. (author)

  5. Annual report 1984 Chemistry Department

    International Nuclear Information System (INIS)

    This report contains a brief survey of the main activities in the Chemistry Department. All articles and reports published and lectures given in 1984 are presented. The facilities and equipment are mentioned briefly. The activities are divided into the following groups: radioisotope chemistry, analytical- and organic chemistry , environmental chemistry, polymer chemistry, geochemistry and waste disposal, radical chemistry, positron annihilation, mineral processing, and general. (author)

  6. Annual Report 1984. Chemistry Department

    OpenAIRE

    Funck, Jytte; Nielsen, Ole John

    1985-01-01

    This report contains a brief survey of the main activities in the Chemistry Department. All articles and reports published and lectures given in 1984 are presented. The facilities and equipment are mentioned briefly. The activities are divided into the following groups: radioisotope chemistry, analytical- and organic chemistry, environmental chemistry, polymer chemistry, geochemistry and waste disposal, radical chemistry, positron annihilation, mineral processing, and general.

  7. Los Alamos Life Sciences Division's biomedical and environmental research programs. Progress report, January-December 1980

    Energy Technology Data Exchange (ETDEWEB)

    Holland, L.M.; Stafford, C.G.; Bolen, S.K. (comps.)

    1981-09-01

    Highlights of research progress accomplished in the Life Sciences Division during the year ending December 1980 are summarized. Reports from the following groups are included: Toxicology, Biophysics, Genetics; Environmental Pathology, Organic Chemistry, and Environmental Sciences. Individual abstracts have been prepared for 46 items for inclusion in the Energy Data Base. (RJC)

  8. Quarterly Progress Report for the Chemical and Energy Research Section of the Chemical Technology Division: January-March 1998

    Energy Technology Data Exchange (ETDEWEB)

    Jubin, R.T.

    1999-03-01

    This report summarizes the major activities conducted in the Chemical and Energy Research Section of the Chemical Technology Division at Oak Ridge National Laboratory (ORNL) during the period January-March 1998. The section conducts basic and applied research and development in chemical engineering, applied chemistry, and bioprocessing, with an emphasis on energy driven technologies and advanced chemical separations for nuclear and waste applications. The report describes the various tasks performed within nine major areas of research: Hot Cell Operations, Process Chemistry and Thermodynamics, Molten Salt Reactor Experiment (MSRE) Remediation Studies, Chemistry Research, Biotechnology, Separations and Materials Synthesis, Fluid Structure and Properties, Biotechnology Research, and Molecular Studies.

  9. Mol - Research Division report 1987 - 2

    International Nuclear Information System (INIS)

    This report covers the research activities at the SCK-CEN, MOl, during the second semester of 1987. It deals with materials physics, nuclear physics, metallurgy, ceramics, nuclear chemistry, chemical engineering, biology, nuclear metrology and analytical chemistry. (MCB)

  10. Mol - Research Division report 1987 - 1

    International Nuclear Information System (INIS)

    This report covers the research activities at the SCK-CEN, Mol, during the first semester of 1987. It deals with material physics, nuclear physics, metallurgy, ceramics, nuclear chemistry, chemical engineering, biology, nuclear metrology and analytical chemistry. (MCB)

  11. Mol - Research Division Report 1986 - 1

    International Nuclear Information System (INIS)

    This report covers the research activities carried out at the SCK-CEN, Mol from the middle of 1985 till mid 1986. It deals with materials science, metallurgy, ceramics, nuclear chemistry, chemical engineering, biology, nuclear meteorology and analytical chemistry. (MCB)

  12. Mol - Research Division Report 1986 - 2

    International Nuclear Information System (INIS)

    This report covers the research activities carried out at the SCK-CEN, Mol during the second semester of 1986. It deals with chemistry, chemical engineering, biology, nuclear metrology, analytical chemistry. (MCB)

  13. The New Color of Chemistry: Green Chemistry

    OpenAIRE

    Zuhal GERÇEK

    2012-01-01

    Green chemistry which is the new application of chemistry rules provides solutions to problems that mankind is faced with climate changes, sustainable agriculture, energy, toxics, depletion of natural sources e.g. designing new chemicals and processes that production and utilization of hazardous matters. So, it is the indispensible tool for sustainable development. Current and future chemists should consider the human health and ecological issues in their professional life. In order to provid...

  14. Philosophy of Chemistry or Philosophy with Chemistry?

    OpenAIRE

    Bernadette Bensaude-Vincent

    2014-01-01

    Chemistry deserves more philosophical attention not so much to do justice to a long-neglected science or to enhance its cultural prestige, but to undermine a number of taken-for-granted assumptions about scientific rationality and more importantly to diversify our metaphysical views of nature and reality. In brief, this paper does not make the case for a philosophy of chemistry. It rather urges philosophers of science to listen to chemists and discuss what they learn from them. Because over t...

  15. 76 FR 4724 - Emerson Transportation Division, a Division of Emerson Electric, Including Workers Located...

    Science.gov (United States)

    2011-01-26

    ... Transportation Division, a division of Emerson Electric, Bridgeton, Missouri. The notice was published in the Federal Register on December 16, 2010 (75 FR 75701). At the request of a State of Arkansas agent, the... Division lived throughout the United States, including Arkansas, but report to the Bridgeton,...

  16. Workshop on Bikini soil chemistry, Berkeley, CA, February 28, 1987

    International Nuclear Information System (INIS)

    The soil treatments being tested on Bikini Atoll fall into three categories: (a) removal and disposal of the surface soil which contains most of the radionuclides; (b) addition of materials that absorb cesium-137 so firmly that it is no longer available for root uptake; 3 addition of the chemically related elements, potassium and/or sodium in relatively large amounts to suppress or 'blockade' cesium uptake by roots. Potassium has further value as a fertilizer since its natural concentration is too low for the high productivity of many crops. Sodium, of course, is present in infinite quantities in seawater and no point on Bikini is further than a quarter of a mile from the source. The problems involved in removing surface soil and growing satisfactory crops on the residual subsoil are now fairly well recognized by BARC. Likewise, the theory underlying cesium immobilization by clay, ground mica, or zeolites is straightforward, although actual performance in Bikini soils is still under test. The effectiveness of the third category (ionic treatment) has now been demonstrated in a series of ongoing field trials. Despite the success of the latter, however, the soil chemistry involved when large amounts of potassium, sodium, or seawater are added to these calcium-dominated soils is poorly understood in quantitative terms. Extension of field trial results to soils of the entire atoll, choice of efficient amounts and treatment combinations, and ability to predict intensity and duration of the suppressive effects will depend on more thoroughgoing knowledge of the mechanisms and rates involved. Accordingly, this workshop was convened to examine present information and concepts pertinent to soil treatments designed to reduce cesium-137 and strontium-90 in Bikini foods. It also considered additional experiments and analyses needed for better understanding and extensibility of the results achieved thus far. The principal topics discussed and the recommendations or suggestions

  17. Physics Division annual report 2004

    International Nuclear Information System (INIS)

    This report highlights the research performed in 2004 in the Physics Division of Argonne National Laboratory. The Division's programs include operation of ATLAS as a national user facility, nuclear structure and reaction research, nuclear theory, medium energy nuclear research and accelerator research and development. The intellectual challenges of this research represent some of the most fundamental challenges in modern science, shaping our understanding of both tiny objects at the center of the atom and some of the largest structures in the universe. A great strength of these efforts is the critical interplay of theory and experiment. Notable results in research at ATLAS include a measurement of the charge radius of He-6 in an atom trap and its explanation in ab-initio calculations of nuclear structure. Precise mass measurements on critical waiting point nuclei in the rapid-proton-capture process set the time scale for this important path in nucleosynthesis. An abrupt fall-off was identified in the subbarrier fusion of several heavy-ion systems. ATLAS operated for 5559 hours of research in FY2004 while achieving 96% efficiency of beam delivery for experiments. In Medium Energy Physics, substantial progress was made on a long-term experiment to search for the violation of time-reversal invariance using trapped Ra atoms. New results from HERMES reveal the influence of quark angular momentum. Experiments at JLAB search for evidence of color transparency in rho-meson production and study the EMC effect in helium isotopes. New theoretical results include a Poincare covariant description of baryons as composites of confined quarks and non-point-like diquarks. Green's function Monte Carlo techniques give accurate descriptions of the excited states of light nuclei and these techniques been extended to scattering states for astrophysics studies. A theoretical description of the phenomena of proton radioactivity has been extended to triaxial nuclei. Argonne continues to

  18. Physics Division annual report 2004.

    Energy Technology Data Exchange (ETDEWEB)

    Glover, J.

    2006-04-06

    This report highlights the research performed in 2004 in the Physics Division of Argonne National Laboratory. The Division's programs include operation of ATLAS as a national user facility, nuclear structure and reaction research, nuclear theory, medium energy nuclear research and accelerator research and development. The intellectual challenges of this research represent some of the most fundamental challenges in modern science, shaping our understanding of both tiny objects at the center of the atom and some of the largest structures in the universe. A great strength of these efforts is the critical interplay of theory and experiment. Notable results in research at ATLAS include a measurement of the charge radius of He-6 in an atom trap and its explanation in ab-initio calculations of nuclear structure. Precise mass measurements on critical waiting point nuclei in the rapid-proton-capture process set the time scale for this important path in nucleosynthesis. An abrupt fall-off was identified in the subbarrier fusion of several heavy-ion systems. ATLAS operated for 5559 hours of research in FY2004 while achieving 96% efficiency of beam delivery for experiments. In Medium Energy Physics, substantial progress was made on a long-term experiment to search for the violation of time-reversal invariance using trapped Ra atoms. New results from HERMES reveal the influence of quark angular momentum. Experiments at JLAB search for evidence of color transparency in rho-meson production and study the EMC effect in helium isotopes. New theoretical results include a Poincare covariant description of baryons as composites of confined quarks and non-point-like diquarks. Green's function Monte Carlo techniques give accurate descriptions of the excited states of light nuclei and these techniques been extended to scattering states for astrophysics studies. A theoretical description of the phenomena of proton radioactivity has been extended to triaxial nuclei. Argonne

  19. Medical Sciences Division report for 1993

    International Nuclear Information System (INIS)

    This year's Medical Sciences Division (MSD) Report is organized to show how programs in our division contribute to the core competencies of Oak Ridge Institute for Science and Education (ORISE). ORISE's core competencies in education and training, environmental and safety evaluation and analysis, occupational and environmental health, and enabling research support the overall mission of the US Department of Energy (DOE)

  20. Polarized Cell Division of Chlamydia trachomatis.

    Science.gov (United States)

    Abdelrahman, Yasser; Ouellette, Scot P; Belland, Robert J; Cox, John V

    2016-08-01

    Bacterial cell division predominantly occurs by a highly conserved process, termed binary fission, that requires the bacterial homologue of tubulin, FtsZ. Other mechanisms of bacterial cell division that are independent of FtsZ are rare. Although the obligate intracellular human pathogen Chlamydia trachomatis, the leading bacterial cause of sexually transmitted infections and trachoma, lacks FtsZ, it has been assumed to divide by binary fission. We show here that Chlamydia divides by a polarized cell division process similar to the budding process of a subset of the Planctomycetes that also lack FtsZ. Prior to cell division, the major outer-membrane protein of Chlamydia is restricted to one pole of the cell, and the nascent daughter cell emerges from this pole by an asymmetric expansion of the membrane. Components of the chlamydial cell division machinery accumulate at the site of polar growth prior to the initiation of asymmetric membrane expansion and inhibitors that disrupt the polarity of C. trachomatis prevent cell division. The polarized cell division of C. trachomatis is the result of the unipolar growth and FtsZ-independent fission of this coccoid organism. This mechanism of cell division has not been documented in other human bacterial pathogens suggesting the potential for developing Chlamydia-specific therapeutic treatments. PMID:27505160

  1. The Changing Nature of Division III Athletics

    Science.gov (United States)

    Beaver, William

    2014-01-01

    Non-selective Division III institutions often face challenges in meeting their enrollment goals. To ensure their continued viability, these schools recruit large numbers of student athletes. As a result, when compared to FBS (Football Bowl Division) institutions these schools have a much higher percentage of student athletes on campus and a…

  2. Friday's Agenda | Division of Cancer Prevention

    Science.gov (United States)

    TimeAgenda8:00 am - 8:10 amWelcome and Opening RemarksLeslie Ford, MDAssociate Director for Clinical ResearchDivision of Cancer Prevention, NCIEva Szabo, MD Chief, Lung and Upper Aerodigestive Cancer Research GroupDivision of Cancer Prevention, NCI8:10 am - 8:40 amClinical Trials Statistical Concepts for Non-Statisticians |

  3. Radioactive Waste and Clean-up Division

    International Nuclear Information System (INIS)

    The main objectives of the Radioactive Waste and Clean-up division of SCK-CEN are outlined. The division's programme consists of research, development and demonstration projects and aims to contribute to the objectives of Agenda 21 on sustainable development in the field of radioactive waste and rehabilitation of radioactively contaminated sites

  4. Research Networks Map | Division of Cancer Prevention

    Science.gov (United States)

    The Division of Cancer Prevention supports major scientific collaborations and research networks at more than 100 sites across the United States.  Five Major Programs' sites are shown on this map. | The Division of Cancer Prevention supports major scientific collaborations and research networks at more than 100 sites across the United States.

  5. Earth Sciences Division, collected abstracts-1977

    International Nuclear Information System (INIS)

    This report is a compilation of abstracts of papers, internal reports, and talks presented during 1977 at national and international meetings by members of the Earth Sciences Division, Lawrence Livermore Laboratory. It is arranged alphabetically by author and includes a cross-reference by subject indicating the areas of research interest of the Earth Sciences Division

  6. EDH 'Millionaire' in PS Division

    CERN Multimedia

    2001-01-01

    Christmas cheer! Left to right: Gerard Lobeau receives a bottle of Champagne from Derek Mathieson and Jurgen De Jonghe in recognition of EDH's millionth document. At 14:33 on Monday 3 December a technician in PS division, Gerard Lobeau, unwittingly became part of an important event in the life of CERN's Electronic Document Handling system (EDH). While ordering some pieces of aluminum for one of the PS's 10Mhz RF cavities, he created EDH document number 1,000,000. To celebrate the event Derek Mathieson (EDH Project Leader) and Jurgen De Jonghe (Original EDH Project Leader) presented Mr Lobeau with a bottle of champagne. As with 93% of material requests, Mr Lobeau's order was delivered within 24 hours. 'I usually never win anything' said Mr Lobeau as he accepted his prize, 'I initially though there may have been a problem with EDH when the document number had so many zeros in it, and was then surprised to get a phone call from you a few minutes later.' The EDH team had been monitoring the EDH document number ...

  7. Physics division annual report 1999

    Energy Technology Data Exchange (ETDEWEB)

    Thayer, K., ed.; Physics

    2000-12-06

    This report summarizes the research performed in the past year in the Argonne Physics Division. The Division's programs include operation of ATLAS as a national heavy-ion user facility, nuclear structure and reaction research with beams of heavy ions, accelerator research and development especially in superconducting radio frequency technology, nuclear theory and medium energy nuclear physics. The Division took significant strides forward in its science and its initiatives for the future in the past year. Major progress was made in developing the concept and the technology for the future advanced facility of beams of short-lived nuclei, the Rare Isotope Accelerator. The scientific program capitalized on important instrumentation initiatives with key advances in nuclear science. In 1999, the nuclear science community adopted the Argonne concept for a multi-beam superconducting linear accelerator driver as the design of choice for the next major facility in the field a Rare Isotope Accelerator (WA) as recommended by the Nuclear Science Advisory Committee's 1996 Long Range Plan. Argonne has made significant R&D progress on almost all aspects of the design concept including the fast gas catcher (to allow fast fragmentation beams to be stopped and reaccelerated) that in large part defined the RIA concept the superconducting rf technology for the driver accelerator, the multiple-charge-state concept (to permit the facility to meet the design intensity goals with existing ion-source technology), and designs and tests of high-power target concepts to effectively deal with the full beam power of the driver linac. An NSAC subcommittee recommended the Argonne concept and set as tie design goal Uranium beams of 100-kwatt power at 400 MeV/u. Argonne demonstrated that this goal can be met with an innovative, but technically in-hand, design. The heavy-ion research program focused on GammaSphere, the premier facility for nuclear structure gamma-ray studies. One example

  8. Journal of Business Chemistry

    OpenAIRE

    2013-01-01

    The Journal of Business Chemistry examines issues associated with leadership and management for chemists and managers working in chemical research or industry. This journal is devoted to improving and developing the field of Business Chemistry. The Journal of Business Chemistry publishes peer-reviewed papers (including case studies) and essays. Areas for possible publication in include: leadership issues in the chemical and biochemical industry, such as teamwork, team building, mentoring, coa...

  9. Mathematical Thinking in Chemistry

    OpenAIRE

    José L. Villaveces; Guillermo Restrepo

    2012-01-01

    Mathematical chemistry is often thought to be a 20th-century subdiscipline of chemistry, but in this paper we discuss several early chemical ideas and some landmarks of chemistry as instances of the mathematical way of thinking; many of them before 1900. By the mathematical way of thinking, we follow Weyl's description of it in terms of functional thinking, i.e. setting up variables, symbolizing them, and seeking for functions relating them. The cases we discuss are Plato's triangles, Geoffro...

  10. Elementary physical chemistry

    CERN Document Server

    Linder, Bruno

    2010-01-01

    This book is designed for a one-semester course, for undergraduates, not necessarily chemistry majors, who need to know something about physical chemistry. The emphasis is not on mathematical rigor, but subtleties and conceptual difficulties are not hidden. It covers the essential topics in physical chemistry, including the state of matter, thermodynamics, chemical kinetics, phase and chemical equilibria, introduction to quantum theory, and molecular spectroscopy.

  11. Orbital interactions in chemistry

    CERN Document Server

    Albright, Thomas A; Whangbo, Myung-Hwan

    2013-01-01

    Explains the underlying structure that unites all disciplines in chemistry Now in its second edition, this book explores organic, organometallic, inorganic, solid state, and materials chemistry, demonstrating how common molecular orbital situations arise throughout the whole chemical spectrum. The authors explore the relationships that enable readers to grasp the theory that underlies and connects traditional fields of study within chemistry, thereby providing a conceptual framework with which to think about chemical structure and reactivity problems. Orbital Interactions

  12. The Chemistry Institute

    OpenAIRE

    Fontecave, Marc

    2015-01-01

    Chemistry at the Collège de France has received particular attention over the last few years. After the departures of Profs Jean-Marie Lehn and Jacques Livage, new ambition for developing this discipline has led to the creation of several Chairs: Prof. Marc Fontecave’s Chair of Chemistry of Biological Processes in 2008, Prof. Clément Sanchez’ Chair of Chemistry of Hybrid Materials in 2011, and the Chair of Chemistry of Materials and Energy, which Prof. Jean-Marie Tarascon has held since 2014....

  13. Advances in quantum chemistry

    CERN Document Server

    Sabin, John R

    2013-01-01

    Advances in Quantum Chemistry presents surveys of current topics in this rapidly developing field that has emerged at the cross section of the historically established areas of mathematics, physics, chemistry, and biology. It features detailed reviews written by leading international researchers. This volume focuses on the theory of heavy ion physics in medicine.Advances in Quantum Chemistry presents surveys of current topics in this rapidly developing field that has emerged at the cross section of the historically established areas of mathematics, physics, chemistry, and biology. It features

  14. DOE fundamentals handbook: Chemistry

    International Nuclear Information System (INIS)

    This handbook was developed to assist nuclear facility operating contractors in providing operators, maintenance personnel, and the technical staff with the necessary fundamentals training to ensure a basic understanding of chemistry. This volume contains the following modules: reactor water chemistry (effects of radiation on water chemistry, chemistry parameters), principles of water treatment (purpose; treatment processes [ion exchange]; dissolved gases, suspended solids, and pH control; water purity), and hazards of chemicals and gases (corrosives [acids, alkalies], toxic compounds, compressed gases, flammable/combustible liquids)

  15. Group theory and chemistry

    CERN Document Server

    Bishop, David M

    1993-01-01

    Group theoretical principles are an integral part of modern chemistry. Not only do they help account for a wide variety of chemical phenomena, they simplify quantum chemical calculations. Indeed, knowledge of their application to chemical problems is essential for students of chemistry. This complete, self-contained study, written for advanced undergraduate-level and graduate-level chemistry students, clearly and concisely introduces the subject of group theory and demonstrates its application to chemical problems.To assist chemistry students with the mathematics involved, Professor Bishop ha

  16. 49 CFR 1242.03 - Made by accounting divisions.

    Science.gov (United States)

    2010-10-01

    ... 49 Transportation 9 2010-10-01 2010-10-01 false Made by accounting divisions. 1242.03 Section 1242... accounting divisions. The separation shall be made by accounting divisions, where such divisions are maintained, and the aggregate of the accounting divisions reported for the quarter and for the year....

  17. Analytical Chemistry Laboratory progress report for FY 1984

    International Nuclear Information System (INIS)

    Technical and administrative activities of the Analytical Chemistry Laboratory (ACL) are reported for fiscal year 1984. The ACL is a full-cost-recovery service center, with the primary mission of providing a broad range of technical support services to the scientific and engineering programs at ANL. In addition, ACL conducts a research program in analytical chemistry, works on instrumental and methods development, and provides analytical services for governmental, educational, and industrial organizations. The ACL is administratively within the Chemical Technology Division, the principal user, but provides technical support for all of the technical divisions and programs at ANL. The ACL has three technical groups - Chemical Analysis, Instrumental Analysis, and Organic Analysis. Under technical activities 26 projects are briefly described. Under professional activities, a list is presented for publications and reports, oral presentations, awards and meetings attended. 6 figs., 2 tabs

  18. Analytical Chemistry Laboratory progress report for FY 1984

    Energy Technology Data Exchange (ETDEWEB)

    Green, D.W.; Heinrich, R.R.; Jensen, K.J.; Stetter, J.R.

    1985-03-01

    Technical and administrative activities of the Analytical Chemistry Laboratory (ACL) are reported for fiscal year 1984. The ACL is a full-cost-recovery service center, with the primary mission of providing a broad range of technical support services to the scientific and engineering programs at ANL. In addition, ACL conducts a research program in analytical chemistry, works on instrumental and methods development, and provides analytical services for governmental, educational, and industrial organizations. The ACL is administratively within the Chemical Technology Division, the principal user, but provides technical support for all of the technical divisions and programs at ANL. The ACL has three technical groups - Chemical Analysis, Instrumental Analysis, and Organic Analysis. Under technical activities 26 projects are briefly described. Under professional activities, a list is presented for publications and reports, oral presentations, awards and meetings attended. 6 figs., 2 tabs.

  19. Division of Scientific Equipment - Overview

    International Nuclear Information System (INIS)

    Full text: The Scientific Equipment Division consists of the Design Group and the Mechanical Workshop. The activity of the Division includes the following: * designs of devices and equipment for experiments in physics; their mechanical construction and assembly. In particular, these are vacuum chambers and installations for HV and UHV;* maintenance and upgrading of the existing installations and equipment in our Institute; * participation of our engineers and technicians in design works, equipment assembly and maintenance for experiments in foreign laboratories. The Design Group is equipped with PC-computers and AutoCAD graphic software (release 2000 and Mechanical Desktop 4.0) and an A0 plotter, which allow us to make drawings and 2- and 3-dimensional mechanical documentation to the world standards. The Mechanical Workshop offers a wide range of machining and treatment methods with satisfactory tolerances and surface quality. They include: * turning - cylindrical elements of a length up to 2000 mm and a diameter up to 400 mm, and also disc type elements of a diameter up to 600 mm and a length not exceeding 300 mm, * milling - elements of length up to 1000 mm and gear wheels of diameter up to 300 mm, * grinding - flat surfaces of dimensions up to 300 mm x 1000 mm and cylindrical elements of a diameter up to 200 mm and a length up to 800 mm, * drilling - holes of a diameter up to 50 mm, * welding - electrical and gas welding, including TIG vacuum-tight welding, * soft and hard soldering, * mechanical works including precision engineering, * plastics treatment - machining and polishing using diamond milling, modelling, lamination of various shapes and materials, including plexiglas, scintillators and light-guides, * painting - paint spraying with possibility of using furnace-fired drier of internal dimensions of 800 mm x 800 mm x 800 mm. Our workshop is equipped with the CNC milling machine which can be used for machining of work pieces up to 500 kg. The machine

  20. Development and Evolution of Neural Networks in an Artificial Chemistry

    OpenAIRE

    Astor, Jens C.; Adami, Christoph

    1998-01-01

    We present a model of decentralized growth for Artificial Neural Networks (ANNs) inspired by the development and the physiology of real nervous systems. In this model, each individual artificial neuron is an autonomous unit whose behavior is determined only by the genetic information it harbors and local concentrations of substrates modeled by a simple artificial chemistry. Gene expression is manifested as axon and dendrite growth, cell division and differentiation, substrate production and c...

  1. Open access and medicinal chemistry

    OpenAIRE

    Swain Chris

    2007-01-01

    Abstract Chemistry Central is a new open access website for chemists publishing peer-reviewed research in chemistry from a range of open access journals. A new addition, Chemistry Central Journal, will cover all of chemistry and will be broken down into discipline-specific sections, and Im delighted that Medicinal Chemistry will be a key discipline in this new journal.

  2. Annual report 1988 Chemistry Department

    International Nuclear Information System (INIS)

    This report contains a brief survey of the main activities in the Chemistry Department. The names and abstracts of all articles and reports published and lectures given in 1988 are presented. The facilities and equipment are mentioned briefly. The activities are divided into the following groups: radioisotope chemistry, analytical- and organic chemistry, environmental chemistry, polymer chemistry, chemical reactivity, mineral processing, and general. (author)

  3. Annual report 1986 chemistry department

    International Nuclear Information System (INIS)

    This report contains a brief survey of the main activities in the Chemistry Department. All articles and reports published and lectures given in 1986 are presented. The facilities and equipment are mentioned briefly. The activities are divided into the following groups: radioisotope chemistry, analytical- and organic chemistry, environmental chemistry, polymer chemistry, radical chemistral, mineral processing, and general. (author)

  4. Annual report 1989 Chemistry Department

    International Nuclear Information System (INIS)

    This report contains a brief survey of the main activities in the Chemistry Department. The names and abstracts of all articles and reports published and lectures given in 1989 are presented. The facilities and equipment are mentioned briefly. The activities are divided into the following groups: radioisotope chemistry, analytical- and organic chemistry, environmental chemistry, polymer chemistry, chemical reactivity, mineral processing, and general. (author)

  5. Biology and Medicine Division: Annual report 1986

    International Nuclear Information System (INIS)

    The Biology and Medicine Division continues to make important contributions in scientific areas in which it has a long-established leadership role. For 50 years the Division has pioneered in the application of radioisotopes and charged particles to biology and medicine. There is a growing emphasis on cellular and molecular applications in the work of all the Division's research groups. The powerful tools of genetic engineering, the use of recombinant products, the analytical application of DNA probes, and the use of restriction fragment length polymorphic DNA are described and proposed for increasing use in the future

  6. Introduction into Calculus over Division Ring

    OpenAIRE

    Kleyn, Aleks

    2008-01-01

    Based on twin representations of division ring in an Abelian group I consider $D$\\Hyph vector spaces over division ring. Morphism of $D$\\Hyph vector spaces is linear map of $D$\\Hyph vector spaces. I consider derivative of function $f$ of continuous division ring as linear map the most close to function $f$. I explore expansion of map into Taylor series and method to find solution of differential equation. The norm in $D$\\Hyph vector space allows considering of continuous mapping of $D$\\Hyph v...

  7. Biology and Medicine Division: Annual report 1986

    Energy Technology Data Exchange (ETDEWEB)

    1987-04-01

    The Biology and Medicine Division continues to make important contributions in scientific areas in which it has a long-established leadership role. For 50 years the Division has pioneered in the application of radioisotopes and charged particles to biology and medicine. There is a growing emphasis on cellular and molecular applications in the work of all the Division's research groups. The powerful tools of genetic engineering, the use of recombinant products, the analytical application of DNA probes, and the use of restriction fragment length polymorphic DNA are described and proposed for increasing use in the future.

  8. Earth Sciences Division collected abstracts: 1979

    International Nuclear Information System (INIS)

    This report is a compilation of abstracts of papers, internal reports, and talks presented during 1979 at national and international meetings by members of the Earth Sciences Division, Lawrence Livermore Laboratory. The arrangement is alphabetical (by author). For a given report, a bibliographic reference appears under the name of each coauthor, but the abstract iself is given only under the name of the first author or the first Earth Sciences Division author. A topical index at the end of the report provides useful cross references, while indicating major areas of research interest in the Earth Sciences Division

  9. The Breath of Chemistry

    DEFF Research Database (Denmark)

    Josephsen, Jens

    The present preliminary text is a short thematic presentation in biological inorganic chemistry meant to illustrate general and inorganic (especially coordination) chemistry in biochemistry. The emphasis is on molecular models to explain features of the complicated mechanisms essential to breathing...

  10. Movies in Chemistry Education

    Science.gov (United States)

    Pekdag, Bulent; Le Marechal, Jean-Francois

    2010-01-01

    This article reviews numerous studies on chemistry movies. Movies, or moving pictures, are important elements of multimedia and signify a privileged or motivating means of presenting knowledge. Studies on chemistry movies show that the first movie productions in this field were devoted to university lectures or documentaries. Shorter movies were…

  11. Physical Chemistry of Molecular

    Institute of Scientific and Technical Information of China (English)

    2011-01-01

    @@ Established in 2009, the group consists of six researchers and more than 70 research assistants and graduate students from the CAS Key Laboratory of Molecular Nanostructures and Nanotechnologies at the CAS Institute of Chemistry.Its research focuses on the physical chemistry involved in molecular assembly, molecular nanostructures, functional nanomaterials and conceptual nano-devices.

  12. Chemistry of americium

    Energy Technology Data Exchange (ETDEWEB)

    Schulz, W.W.

    1976-01-01

    Essential features of the descriptive chemistry of americium are reviewed. Chapter titles are: discovery, atomic and nuclear properties, collateral reading, production and uses, chemistry in aqueous solution, metal, alloys, and compounds, and, recovery, separation, purification. Author and subject indexes are included. (JCB)

  13. Exercises in Computational Chemistry

    DEFF Research Database (Denmark)

    Spanget-Larsen, Jens

    2016-01-01

    A selection of HyperChem© PC-exercises in computational chemistry. Answers to most questions are appended (Roskilde University 2014-16).......A selection of HyperChem© PC-exercises in computational chemistry. Answers to most questions are appended (Roskilde University 2014-16)....

  14. Titanocene sulfide chemistry

    Czech Academy of Sciences Publication Activity Database

    Horáček, Michal

    2016-01-01

    Roč. 314, MAY 2016 (2016), s. 83-102. ISSN 0010-8545 R&D Projects: GA ČR(CZ) GAP207/12/2368 Institutional support: RVO:61388955 Keywords : titanocene sulfide chemistry * photolysis * titanocene hydrosulfides Ti-(SH)n Subject RIV: CF - Physical ; Theoretical Chemistry Impact factor: 12.239, year: 2014

  15. Chemistry in Microfluidic Channels

    Science.gov (United States)

    Chia, Matthew C.; Sweeney, Christina M.; Odom, Teri W.

    2011-01-01

    General chemistry introduces principles such as acid-base chemistry, mixing, and precipitation that are usually demonstrated in bulk solutions. In this laboratory experiment, we describe how chemical reactions can be performed in a microfluidic channel to show advanced concepts such as laminar fluid flow and controlled precipitation. Three sets of…

  16. Chemical and Laser Sciences Division annual report 1989

    International Nuclear Information System (INIS)

    The Chemical and Laser Sciences Division Annual Report includes articles describing representative research and development activities within the Division, as well as major programs to which the Division makes significant contributions

  17. Chemical and Laser Sciences Division annual report 1989

    Energy Technology Data Exchange (ETDEWEB)

    Haines, N. (ed.)

    1990-06-01

    The Chemical and Laser Sciences Division Annual Report includes articles describing representative research and development activities within the Division, as well as major programs to which the Division makes significant contributions.

  18. Mathematical Thinking in Chemistry

    Directory of Open Access Journals (Sweden)

    José L. Villaveces

    2012-05-01

    Full Text Available Mathematical chemistry is often thought to be a 20th-century subdiscipline of chemistry, but in this paper we discuss several early chemical ideas and some landmarks of chemistry as instances of the mathematical way of thinking; many of them before 1900. By the mathematical way of thinking, we follow Weyl's description of it in terms of functional thinking, i.e. setting up variables, symbolizing them, and seeking for functions relating them. The cases we discuss are Plato's triangles, Geoffroy's affinity table, Lavoisier's classification of substances and their relationships, Mendeleev's periodic table, Cayley's enumeration of alkanes, Sylvester's association of algebra and chemistry, and Wiener's relationship between molecular structure and boiling points. These examples show that mathematical chemistry has much more than a century of history.

  19. Korean Kimchi Chemistry: A Multicultural Chemistry Connection

    Science.gov (United States)

    Murfin, Brian

    2009-01-01

    Connecting science with different cultures is one way to interest students in science, to relate science to their lives, and at the same time to broaden their horizons in a variety of ways. In the lesson described here, students make kimchi, a delicious and popular Korean dish that can be used to explore many important chemistry concepts,…

  20. Third Chemistry Conference on Recent Trends in Chemistry

    International Nuclear Information System (INIS)

    The third chemistry conference 2011 on recent trends in chemistry was held from October 17-19, 2001 at Islamabad, Pakistan. More than 65 papers and oral presentation. The scope of the conference was wide open and provides and opportunity for participation of broad spectrum of chemists. This forum provided a platform for the dissemination of the latest research followed by discussion pertaining to new trends in chemistry. This con fence covered different aspects of subjects including analytical chemistry, environmental chemistry, polymer chemistry, industrial chemistry, biochemistry and nano chemistry etc. (A.B.)

  1. Civil Remedies Division Administrative Law Judge Decisions

    Data.gov (United States)

    U.S. Department of Health & Human Services — Decisions issued by Administrative Law Judges of the Departmental Appeals Board's Civil Remedies Division concerning fraud and abuse determinations by the Office of...

  2. Environmental Research Division's Data Access Program (ERDDAP)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — ERDDAP (the Environmental Research Division's Data Access Program) is a data server that gives you a simple, consistent way to download subsets of scientific...

  3. Earth Sciences Division annual report 1981

    International Nuclear Information System (INIS)

    Separate abstracts were prepared for the 59 papers of the 1981 annual report of the Earth Sciences Division at Lawrence Berkeley Laboratory. The general topics covered included nuclear waste isolation, geophysics and reservoir engineering, and geosciences

  4. Overlapped frequency-time division multiplexing

    Institute of Scientific and Technical Information of China (English)

    JIANG Hui; LI Dao-ben

    2009-01-01

    A technique named overlapped frequency-time division multiplexing (OVFTDM)) is proposed in this article. The technique is derived from Nyquist system and frequency-time division multiplexing system. When the signals are compactly overlapped without the orthogonality in time domain, the technique is named overlapped time division multiplexing (OVTDM), whereas when signals are compactly overlapped without the orthogonality in frequency domain, the technique is called overlapped frequency division multiplexing (OVFDM). To further improve spectral efficiency, the OVFTDM in which signals are overlapped both in frequency domain and in time domain is explored. OVFTDM does not depend on orthogonality whatever in time domain or in frequency domain like Nyquist system or OFDM system, but on the convolutional constraint relationship among signals. Therefore, not only the spectral efficiency but also the reliability is improved. The simulations verify the validity of this theory.

  5. Theoretical Division annual report, FY 1975

    International Nuclear Information System (INIS)

    This report presents an overview of the activities in the Theoretical Division and a summary of research highlights during FY 1975. It is intended to inform a wide audience about the theoretical work of the LASL and, therefore, contains introductory material which places recent advances in a broader context. The report is organized into two special interest reports: reactor safety research and the Advanced Research Committee, and 11 reports from the T-Division group leaders on the work of their respective groups. Main interests and responsibilities are outlined including the relationship of the group's work to the work of other T-Division groups and other divisions at the Laboratory. The description of research highlights for FY 1975 explains in a fairly simple, straightforward manner the major recent advances and their significance. Each group report is followed by a publication list for FY 1975 (330 references) and a list of talks given outside the Laboratory (140 references). 29 figures

  6. DNR Division of Enforcement Officer Patrol Areas

    Data.gov (United States)

    Minnesota Department of Natural Resources — This theme shows the DNR Division of Enforcement Office Patrol Areas as of January 1, 2003. Patrol areas were defined and verified by Patrol Officers during the...

  7. Nanoengineering: Super symmetry in cell division

    Science.gov (United States)

    Huang, Kerwyn Casey

    2015-08-01

    Bacterial cells can be sculpted into different shapes using nanofabricated chambers and then used to explore the spatial adaptation of protein oscillations that play an important role in cell division.

  8. About DCP | Division of Cancer Prevention

    Science.gov (United States)

    The Division of Cancer Prevention (DCP) is the primary unit of the National Cancer Institute devoted to cancer prevention research. DCP provides funding and administrative support to clinical and laboratory researchers, community and multidisciplinary teams, and collaborative scientific networks. |

  9. System approach to chemistry course

    OpenAIRE

    Lorina E. Kruglova; Valentina G. Derendyaeva

    2010-01-01

    The article considers the raise of chemistry profile for engineers and constructors training, discloses the system approach to chemistry course and singles out the most important modules from the course of general chemistry for construction industry.

  10. Budget Setting Strategies for the Company's Divisions

    OpenAIRE

    Berg, M; Brekelmans, R.C.M.; De Waegenaere, A.M.B.

    1997-01-01

    The paper deals with the issue of budget setting to the divisions of a company. The approach is quantitative in nature both in the formulation of the requirements for the set-budgets, as related to different general managerial objectives of interest, and in the modelling of the inherent uncertainties in the divisions' revenues. Solutions are provided for specific cases and conclusions are drawn on different aspects of this issue based on analytical and numerical analysis of the results. From ...

  11. Weapons Experiments Division Explosives Operations Overview

    Energy Technology Data Exchange (ETDEWEB)

    Laintz, Kenneth E. [Los Alamos National Laboratory

    2012-06-19

    Presentation covers WX Division programmatic operations with a focus on JOWOG-9 interests. A brief look at DARHT is followed by a high level overview of explosives research activities currently being conducted within in the experimental groups of WX-Division. Presentation covers more emphasis of activities and facilities at TA-9 as these efforts have been more traditionally aligned with ongoing collaborative explosive exchanges covered under JOWOG-9.

  12. Nuclear Physics Division annual report 1992

    International Nuclear Information System (INIS)

    The report covers the research and development activities of the Nuclear Physics Division for the period January to December 1992. These research and development activities are reported under the headings: 1) Experiments, 2) Theory, 3) Applications, 4) Instrumentation, and 5) The Pelletron Accelerator. At the end a list of publications by the staff scientists of the Division is given. Colloquia and seminars held during the year are also listed. (author). refs., tabs., figs

  13. Nuclear Science Division: 1993 Annual report

    International Nuclear Information System (INIS)

    This report describes the activities of the Nuclear Science Division for the 1993 calendar year. This was another significant year in the history of the Division with many interesting and important accomplishments. Activities for the following programs are covered here: (1) nuclear structure and reactions program; (2) the Institute for Nuclear and Particle Astrophysics; (3) relativistic nuclear collisions program; (4) nuclear theory program; (5) nuclear data evaluation program, isotope project; and (6) 88-inch cyclotron operations

  14. Earth Sciences Division annual report 1989

    Energy Technology Data Exchange (ETDEWEB)

    1990-06-01

    This Annual Report presents summaries of selected representative research activities from Lawrence Berkeley Laboratory grouped according to the principal disciplines of the Earth Sciences Division: Reservoir Engineering and Hydrology, Geology and Geochemistry, and Geophysics and Geomechanics. We are proud to be able to bring you this report, which we hope will convey not only a description of the Division's scientific activities but also a sense of the enthusiasm and excitement present today in the Earth Sciences.

  15. Activity Report of Reactor Physics Division - 1997

    International Nuclear Information System (INIS)

    The research and development activities of the Reactor Physics Division of the Indira Gandhi Centre for Atomic Research (IGCAR), Kalpakkam during 1997 are reported. The activities are arranged under the headings: nuclear data processing and validation, PFBR and KAMINI core physics, FBTR core physics, radioactivity and shielding and safety analysis. A list of publications of the Division and seminars delivered are included at the end of the report

  16. Divisibility properties for C*-algebras

    DEFF Research Database (Denmark)

    Robert, Leonel; Rørdam, Mikael

    2013-01-01

    We consider three notions of divisibility in the Cuntz semigroup of a C*-algebra, and show how they reflect properties of the C*-algebra. We develop methods to construct (simple and non-simple) C*-algebras with specific divisibility behaviour. As a byproduct of our investigations, we show that...... there exists a sequence (An) of simple unital infinite dimensional C*-algebras such that the product ∏n=1∞ An has a character....

  17. Earth Sciences Division, collected abstracts, 1978

    Energy Technology Data Exchange (ETDEWEB)

    Taasevigen, D.K.; Henry, A.L.; Madsen, S.K.

    1979-03-30

    Abstracts of papers, internal reports, and talks presented during 1978 at national and international meetings by members of the Earth Sciences Division of the Lawrence Livermore Laboratory are compiled. The arrangement is alphabetical (by author). For any given report, a bibliographic reference appears under the name of each coauthor. A topical index at the end provides useful cross references, while indicating major areas of research interest in the Earth Sciences Division.

  18. Activity report of Reactor Physics Division- 1994

    International Nuclear Information System (INIS)

    This report contains the summaries of the various activities conducted during the year 1994 by the members of the Reactor Physics Division. These have been organised under the following topics: nuclear data processing and validation and uncertainty analysis; core physics and operation studies; reactor kinetics and safety analysis; radiation transport and shielding studies. A list of publications made by the members of the Division and the reactor physics seminars held during the year 1994 are included at the end of the report

  19. Earth Sciences Division collected abstracts: 1980

    International Nuclear Information System (INIS)

    This report is a compilation of abstracts of papers, reports, and talks presented during 1980 at national and international meetings by members of the Earth Sciences Division, Lawrence Livermore National Laboratory. The arrangement is alphabetical (by author). For a given report, a bibliographic reference appears under the name of each coauthor, but the abstract itself is given only under the name of the first author (indicated in capital letters) or the first Earth Sciences Division author

  20. Medical Sciences Division report for 1993

    Energy Technology Data Exchange (ETDEWEB)

    1993-12-31

    This year`s Medical Sciences Division (MSD) Report is organized to show how programs in our division contribute to the core competencies of Oak Ridge Institute for Science and Education (ORISE). ORISE`s core competencies in education and training, environmental and safety evaluation and analysis, occupational and environmental health, and enabling research support the overall mission of the US Department of Energy (DOE).