Fuel Chemistry Division annual progress report for 1989

International Nuclear Information System (INIS)

Singh Mudher, K.D.

1993-01-01

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

Biology Division progress report, October 1, 1991--September 30, 1993

Energy Technology Data Exchange (ETDEWEB)

Hartman, F.C.; Cook, J.S.

1993-10-01

This Progress Report summarizes the research endeavors of the Biology Division of the Oak Ridge National Laboratory during the period October 1, 1991, through September 30, 1993. The report is structured to provide descriptions of current activities and accomplishments in each of the Division`s major organizational units. Lists of information to convey the entire scope of the Division`s activities are compiled at the end of the report.

Instrumentation and Controls Division progress report, July 1, 1990--June 30, 1992. Volume 2

Energy Technology Data Exchange (ETDEWEB)

1993-01-01

This report contains the following information from the Instrumentation and Controls Division of Oak Ridge National Laboratory: supplementary activities; seminars; publications and presentations; scientific and professional activities, achievements, and awards; and division organization charts.

Energy Division progress report, fiscal years 1994--1995

Energy Technology Data Exchange (ETDEWEB)

Moser, C.I. [ed.

1996-06-01

At ORNL, the Energy Division`s mission is to provide innovative solutions to energy and related issues of national and global importance through interdisciplinary research and development. Its goals and accomplishments are described in this progress report for FY 1994 and FY 1995. The Division`s expenditures in FY 1995 totaled 44.9 million. Sixty percent of the divisions work was supported by the US DOE. Other significant sponsors include the US DOT, the US DOD, other federal agencies, and some private organizations. The Division`s programmatic activities cover three main areas: (1) analysis and assessment, (2) transportation systems, and (3) energy use and delivery technologies. Analysis and assessment activities involve energy and resource analysis, preparation of environmental assessments and impact statements, and impact statements, research on emergency preparedness, analysis of energy and environmental needs in developing countries, and transportation analysis. Transportation systems research seeks to improve the quality of both civilian and military transportation efforts. Energy use and delivery technologies focus on building equipment, building envelopes, (walls, roofs, attics, and materials), improvement of energy efficiency in buildings, and electric power systems.

Biology Division progress report, October 1, 1993--September 30, 1995

Energy Technology Data Exchange (ETDEWEB)

NONE

1995-10-01

This Progress Report summarizes the research endeavors of the Biology Division of the Oak Ridge National Laboratory during the period October 1, 1993, through September 30, 1995. The report is structured to provide descriptions of current activities and accomplishments in each of the Division`s major organizational units. Lists of information to convey the entire scope of the Division`s activities are compiled at the end of the report. Attention is focused on the following research activities: molecular, cellular, and cancer biology; mammalian genetics and development; genome mapping program; and educational activities.

Spectroscopy Division progress report for January 1987 - December 1988

International Nuclear Information System (INIS)

Dixit, R.M.

1989-01-01

During the period January 1987 - December 1988, the Spectroscopy Division has carried out research and development in many areas of analytical spectroscopy, atomic spectra and spectra of diatomic and polyatomic molecules. The Division has acquired an ICP spectrometer and an excimer laser pumped dye laser during this period and they have been used very fruitfully for research and development. Research in high resolution atomic spectroscopy has continued to flourish. Beam foil spectroscopy and spectroscopy of low energy plasma focus sources have been put on a firm foundation. Setting up of new experimental systems for solid state spectral studies at liquid helium temperatures have been started. A good amount of theoretical work in forbidden transitions, has been carried out. Diode laser spectroscopy has been used for high precision intensity and frequency measurements. Service facilities like quality control analysis of nuclear materials and supply of optical components and thin film devices have performed with maximum efficiency. The electronics and instrumentation group has developed several facilities for various experimental set ups. Brief description of all these and other activities of the Division are given in the present progress report. A list of publications and a divisional staff chart are also given. (author). figs., tabs

Radiochemistry Division: annual progress report: 1987

International Nuclear Information System (INIS)

1989-01-01

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 YBa 2 Cu 3 Osub(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

Solid State Division progress report for period ending September 30, 1990

International Nuclear Information System (INIS)

Green, P.H.; Hinton, L.W.

1991-03-01

This report covers research progress in the Solid State Division from April 1, 1989, to September 30, 1990. During this period, division research programs were significantly enhanced by the restart of the High-Flux Isotope Reactor (HFIR) and by new initiatives in processing and characterization of materials

Solid State Division progress report for period ending September 30, 1990

Energy Technology Data Exchange (ETDEWEB)

Green, P.H.; Hinton, L.W. (eds.)

1991-03-01

This report covers research progress in the Solid State Division from April 1, 1989, to September 30, 1990. During this period, division research programs were significantly enhanced by the restart of the High-Flux Isotope Reactor (HFIR) and by new initiatives in processing and characterization of materials.

Instrumentation and Controls Division progress report for the period July 1, 1986 to June 30, 1988

International Nuclear Information System (INIS)

Klobe, L.E.

1988-12-01

The Instrumentation and Controls (IandC) Division of Oak Ridge National Laboratory (ORNL) performs basic and applied instrumentation and controls research, development and design engineering, specialized instrument design and fabrication, and maintenance services for instruments, electronics, and computers. The IandC Division is one of the largest RandD organizations of its type among government laboratories, and it exists as the result of an organizational strategy to integrate ORNL's instrumentation and controls-related disciplines into one dedicated functional organization to increase the Laboratory's expertise and capabilities in these rapidly expanding, innovative areas of technology. The Division participates in the programs and projects of ORNL by applying its expertise and capabilities in concert with other divisions to perform basic research and mission-oriented technology development. Many of the Division's RandD tasks that are a part of a larger ORNL program are of sufficient scope that the IandC effort constitutes a separate program element with direct funding and management responsibility within the Division. The activities of IandC include performance of an RandD task in IandC facilities, the participation of from one of many IandC engineers and scientists in a multidisciplinary team working in a specific research area or development project, design and fabrication of a special instrument or instrumentation system, or a few hours of maintenance service. In its support and maintenance work, the role of the IandC Division is to provide a level of expertise appropriate to complete a job successfully at minimum overall cost and time schedule---a role which involves IandC in almost all ORNL activities

Instrumentation and Controls Division progress report for the period July 1, 1986 to June 30, 1988

Energy Technology Data Exchange (ETDEWEB)

Klobe, L.E. (ed.)

1988-12-01

The Instrumentation and Controls (IandC) Division of Oak Ridge National Laboratory (ORNL) performs basic and applied instrumentation and controls research, development and design engineering, specialized instrument design and fabrication, and maintenance services for instruments, electronics, and computers. The IandC Division is one of the largest RandD organizations of its type among government laboratories, and it exists as the result of an organizational strategy to integrate ORNL's instrumentation and controls-related disciplines into one dedicated functional organization to increase the Laboratory's expertise and capabilities in these rapidly expanding, innovative areas of technology. The Division participates in the programs and projects of ORNL by applying its expertise and capabilities in concert with other divisions to perform basic research and mission-oriented technology development. Many of the Division's RandD tasks that are a part of a larger ORNL program are of sufficient scope that the IandC effort constitutes a separate program element with direct funding and management responsibility within the Division. The activities of IandC include performance of an RandD task in IandC facilities, the participation of from one of many IandC engineers and scientists in a multidisciplinary team working in a specific research area or development project, design and fabrication of a special instrument or instrumentation system, or a few hours of maintenance service. In its support and maintenance work, the role of the IandC Division is to provide a level of expertise appropriate to complete a job successfully at minimum overall cost and time schedule---a role which involves IandC in almost all ORNL activities.

Radiochemistry Division annual progress report : 1990

International Nuclear Information System (INIS)

Iyer, R.H.

1992-01-01

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

Division of Waste Management programs. Progress report, January-June 1979

International Nuclear Information System (INIS)

Lerch, R.E.; Allen, C.R.; Crippen, M.D.

1980-10-01

This is the twelfth progress report on Division of Waste Management programs being conducted at the Hanford Engineering Development Laboratory (HEDL) for the United States Department of Energy. The report describes progress in the first half of 1979 on the following programs: Acid Digestion of Combustible Wastes; and Chemical Treatment of Transuranic Contaminated Metals

Biology Division. Progress report, August 1, 1982-September 30, 1983

International Nuclear Information System (INIS)

1984-01-01

The Biology Division is the component of the Oak Ridge National Laboratory that investigates the potential adverse health effects of energy-related substances. The body of this report provides summaries of the aims, scope and progress of the research of groups of investigators in the Division during the period of August 1, 1982, through September 30, 1983. At the end of each summary is a list of publications covering the same period (published or accepted for publication). For convenience, the summaries are assembled under Sections in accordance with the current organizational structure of the Biology Division; each Section begins with an overview. It will be apparent, however, that currents run throughout the Division and that the various programs support and interact with each other

Biology Division. Progress report, August 1, 1982-September 30, 1983

Energy Technology Data Exchange (ETDEWEB)

1984-01-01

The Biology Division is the component of the Oak Ridge National Laboratory that investigates the potential adverse health effects of energy-related substances. The body of this report provides summaries of the aims, scope and progress of the research of groups of investigators in the Division during the period of August 1, 1982, through September 30, 1983. At the end of each summary is a list of publications covering the same period (published or accepted for publication). For convenience, the summaries are assembled under Sections in accordance with the current organizational structure of the Biology Division; each Section begins with an overview. It will be apparent, however, that currents run throughout the Division and that the various programs support and interact with each other.

Solid State Division progress report for period ending March 31, 1997

Energy Technology Data Exchange (ETDEWEB)

Green, P.H.; Hinton, L.W. [eds.

1997-12-01

This report covers research progress in the Solid State Division from April 1, 1995, through March 31, 1997. During this period, the division conducted a broad, interdisciplinary materials research program in support of Department of Energy science and technology missions. The report includes brief summaries of research activities in condensed matter theory, neutron scattering, synthesis and characterization of materials, ion beam and laser processing, and the structure of solids and surfaces. An addendum includes listings of division publications and professional activities.

Theoretical Physics Division progress report October 1978 -September 1979

International Nuclear Information System (INIS)

1980-03-01

A progress report of the Theoretical Physics Division of the Atomic Energy Research Establishment, Harwell for the year October 1978 to September 1979 is presented. The sections include: (1) Nuclear, atomic and molecular physics (nuclear theory, atomic theory, nuclear power applications). (2) Theory of fluids (statistical mechanics, mathematical physics, computational fluid mechanics). (3) Radiation damage and theoretical metallurgy. (4) Theory of solid state materials (point defects and point-defect determined processes, surface studies, non-destructive examination). A bibliography is given of reports and publications written by the division during the period. (UK)

Environmental Sciences Division annual progress report for period ending September 30, 1991

Energy Technology Data Exchange (ETDEWEB)

1992-04-01

This progress report summarizes the research and development activities conducted in the Environmental Sciences Division of Oak Ridge National Laboratory during the period October 1, 1990, through September 30, 1991. The report is structured to provide descriptions of current activities and accomplishments in each of the division`s major organizational units. Following the sections describing the organizational units is a section devoted to lists of information necessary to convey the scope of the work in the division. The Environmental Sciences Division (ESD) at Oak Ridge National Laboratory (ORNL) conducts environmental research and analyses associated with both energy technology development and the interactions between people and the environment. The division engages in basic and applied research for a diverse list of sponsors. While the US Department of Energy (DOE) is the primary sponsor ESD staff also perform research for other federal agencies, state agencies, and private industry. The division works collaboratively with federal agencies, universities, and private organizations in achieving its research objectives and hosts a large number of visiting investigators from these organizations. Given the diverse interdisciplinary specialization of its staff, ESD provides technical expertise on complex environmental problems and renders technical leadership for major environmental issues of national and local concern. This progress report highlights many of ESD`s accomplishment in these and other areas in FY 1991.

Biology Division progress report, October 1, 1984-September 30, 1985

Energy Technology Data Exchange (ETDEWEB)

1986-01-01

The body of this report provides summaries of the aims, scope and progress of the research by groups of investigators in the Division during the period of October 1, 1984, through September 30, 1985. At the end of each summary is a list of publications covering the same period. For convenience, the summaries are assembled under Sections in accordance with the current organizational structure of the Biology Division; each Section begins with an overview. It will be apparent, however, tha crosscurrents run throughout the Division and that the various programs support and interact with each other. In addition, this report includes information on the Division's educational activities, Advisory Committee, seminar program, and international interactions, as well as extramural activities of staff members, abstracts for technical meetings, and funding and personnel levels.

Biology Division progress report, October 1, 1984-September 30, 1985

International Nuclear Information System (INIS)

1986-01-01

The body of this report provides summaries of the aims, scope and progress of the research by groups of investigators in the Division during the period of October 1, 1984, through September 30, 1985. At the end of each summary is a list of publications covering the same period. For convenience, the summaries are assembled under Sections in accordance with the current organizational structure of the Biology Division; each Section begins with an overview. It will be apparent, however, tha crosscurrents run throughout the Division and that the various programs support and interact with each other. In addition, this report includes information on the Division's educational activities, Advisory Committee, seminar program, and international interactions, as well as extramural activities of staff members, abstracts for technical meetings, and funding and personnel levels

Physics Division progress report, January 1, 1991--December 31, 1991

International Nuclear Information System (INIS)

Shera, E.B.; Hollen, G.Y.

1992-06-01

This report provides selected accounts of significant progress in research and development achieved by Physics Division personnel during the period January 1, 1991, through December 31, 1991. It also provides a general description of the goals and interests of the Division, very brief descriptions of projects in the Division, and a list of publications produced during this period. The report represents the three main areas of experimental research and development in which the Physics Division serves the needs of Los Alamos National Laboratory and the nation in defense and basic sciences: (1) fundamental research in nuclear and particle physics, condensed-matter physics, and biophysics; (2) laser physics and applications, especially to high-density plasmas; (3) defense physics, including the development of diagnostic methods for weapons tests, weapons-related high energy-density physics, and other programs

Division of Waste Management programs. Progress report, July-December 1978

International Nuclear Information System (INIS)

Lerch, R.E.; Allen, C.R.; Richardson, G.L.

1979-07-01

This is the eleventh progress report on Division of Waste Management programs. The report describes progress in the second half of 1978 on the following programs: intermediate-level waste solidification, chemical processing of combustible solid waste, and application of acid digestion to commercial wastes. The latter two programs were combined in October 1978 into a single program, acid digestion of combustible wastes

Engineering Physics and Mathematics Division progress report for period ending December 31, 1994

International Nuclear Information System (INIS)

Sincovec, R.F.

1995-07-01

This report provides a record of the research activities of the Engineering Physics and Mathematics Division for the period January 1, 1993, through December 31, 1994. This report is the final archival record of the EPM Division. On October 1, 1994, ORELA was transferred to Physics Division and on January 1, 1995, the Engineering Physics and Mathematics Division and the Computer Applications Division reorganized to form the Computer Science and Mathematics Division and the Computational Physics and Engineering Division. Earlier reports in this series are identified on the previous pages, along with the progress reports describing ORNL's research in the mathematical sciences prior to 1984 when those activities moved into the Engineering Physics and Mathematics Division

Engineering Physics and Mathematics Division progress report for period ending December 31, 1994

Energy Technology Data Exchange (ETDEWEB)

Sincovec, R.F.

1995-07-01

This report provides a record of the research activities of the Engineering Physics and Mathematics Division for the period January 1, 1993, through December 31, 1994. This report is the final archival record of the EPM Division. On October 1, 1994, ORELA was transferred to Physics Division and on January 1, 1995, the Engineering Physics and Mathematics Division and the Computer Applications Division reorganized to form the Computer Science and Mathematics Division and the Computational Physics and Engineering Division. Earlier reports in this series are identified on the previous pages, along with the progress reports describing ORNL`s research in the mathematical sciences prior to 1984 when those activities moved into the Engineering Physics and Mathematics Division.

Radiochemistry Division annual progress report for 1982

International Nuclear Information System (INIS)

Bhargava, V.K.; Rao, V.K.

1984-01-01

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 UO 2 microspheres by internal gelation method, (2) synergetic extraction studies of various actinides from aqueous solutions, (3) development of methods of determination of uranium, 241 Am and 239 Pu, (4) fission studies of 232 Th, 236 U, 252 Cf and 229 Th, (5) determination of half-life of 241 Pu by various methods. A list of publications of the members of the Division published during 1982 is also given. (M.G.B.)

Environmental Sciences Division annual progress report for period ending September 30, 1992

International Nuclear Information System (INIS)

1993-04-01

This progress report summarizes the research and development activities conducted in the Environmental Sciences Division of Oak Ridge National Laboratory during fiscal year (FY) 1992, which which extended from October 1, 1991, through September 30, 1992. This report is structured to provide descriptions of current activities and accomplishments in each of the division's major organizational units. Section activities are described in the Earth and Atmospheric sciences, ecosystem studies, Environmental analysis, environmental biotechnology, and division operations

Physics Division progress report, January 1, 1990--December 31, 1990

International Nuclear Information System (INIS)

Shera, E.B.; Hollen, G.Y.

1991-07-01

This report provides selected accounts of significant progress in research and development achieved by Physics Division personnel during the period January 1, 1990, through December 31, 1990. It also provides a general description of the goals and interests of the Division, very brief descriptions of projects in the Division, and a list of publications produced during this period. The report represents the three main areas of experimental research and development in which the Physics Division serves the needs of Los Alamos National Laboratory and the nation in defense and basic sciences: (1) fundamental research in nuclear and particle physics, condensed-matter physics, and biophysics; (2) laser physics and applications, especially to high-density plasmas; and (3) defense physics, including the development of diagnostic methods for weapons tests, weapons-related high energy-density physics, and programs supporting the Strategic Defense Initiative

Environmental Sciences Division annual progress report for period ending September 30, 1992

Energy Technology Data Exchange (ETDEWEB)

Van Hook, R. I.; Hildebrand, S. G.; Gehrs, C. W.; Sharples, F. E.; Shriner, D. S.; Stow, S. H.; Cushman, J. H.; Kanciruk, P.

1993-04-01

This progress report summarizes the research and development activities conducted in the Environmental Sciences Division of Oak Ridge National Laboratory during fiscal year (FY) 1992, which which extended from October 1, 1991, through September 30, 1992. This report is structured to provide descriptions of current activities and accomplishments in each of the division's major organizational units. Section activities are described in the Earth and Atmospheric sciences, ecosystem studies, Environmental analysis, environmental biotechnology, and division operations.

Environmental Sciences Division annual progress report for period ending September 30, 1991

Energy Technology Data Exchange (ETDEWEB)

1992-04-01

This progress report summarizes the research and development activities conducted in the Environmental Sciences Division of Oak Ridge National Laboratory during the period October 1, 1990, through September 30, 1991. The report is structured to provide descriptions of current activities and accomplishments in each of the division's major organizational units. Following the sections describing the organizational units is a section devoted to lists of information necessary to convey the scope of the work in the division. The Environmental Sciences Division (ESD) at Oak Ridge National Laboratory (ORNL) conducts environmental research and analyses associated with both energy technology development and the interactions between people and the environment. The division engages in basic and applied research for a diverse list of sponsors. While the US Department of Energy (DOE) is the primary sponsor ESD staff also perform research for other federal agencies, state agencies, and private industry. The division works collaboratively with federal agencies, universities, and private organizations in achieving its research objectives and hosts a large number of visiting investigators from these organizations. Given the diverse interdisciplinary specialization of its staff, ESD provides technical expertise on complex environmental problems and renders technical leadership for major environmental issues of national and local concern. This progress report highlights many of ESD's accomplishment in these and other areas in FY 1991.

Metals and Ceramics Division progress report for period ending June 30, 1984

Energy Technology Data Exchange (ETDEWEB)

Brogden, I. (ed.)

1984-09-01

This progress report covers the research and development activities of the Metals and Ceramics Division from January 1, 1983, through June 30, 1984. The format of the report follows the organizational structure of the division. Short summaries of technical work in progress in the various experimental groups are presented in six parts. Chapter 1 deals with the research and development activities of the Engineering Materials Section, Chapter 2 with the Processing Science and Technology Section, Chapter 3 with the Materials Science Section, Chapter 4 with Project Activities, Chapter 5 with Specialized Research Facilities and Equipment, and Chapter 6 with Miscellaneous Activities.

Metals and Ceramics Division progress report for period ending June 30, 1984

International Nuclear Information System (INIS)

Brogden, I.

1984-09-01

This progress report covers the research and development activities of the Metals and Ceramics Division from January 1, 1983, through June 30, 1984. The format of the report follows the organizational structure of the division. Short summaries of technical work in progress in the various experimental groups are presented in six parts. Chapter 1 deals with the research and development activities of the Engineering Materials Section, Chapter 2 with the Processing Science and Technology Section, Chapter 3 with the Materials Science Section, Chapter 4 with Project Activities, Chapter 5 with Specialized Research Facilities and Equipment, and Chapter 6 with Miscellaneous Activities

Health and Safety Research Division progress report, October 1, 1988--March 31, 1990

International Nuclear Information System (INIS)

1990-09-01

The Health and Safety Research Division (HASRD) of the Oak Ridge National Laboratory (ORNL) continues to maintain an outstanding program of basic and applied research displaying a high level of creativity and achievement as documented by awards, publications, professional service, and successful completion of variety of projects. Our focus is on human health and the scientific basis for measurement and assessment of health-related impacts of energy technologies. It is our custom to publish a division progress report every 18 months that summarizes our programmatic progress and other measures of achievement over the reporting period. Since it is not feasible to summarize in detail all of our work over the period covered by this report (October 1, 1988, to March 30, 1990), we intend this document to point the way to the expensive open literature that documents our findings. During the reporting period the Division continued to maintain strong programs in its traditional areas of R ampersand D, but also achieved noteworthy progress in other areas. Much of the Division's work on site characterization, development of new field instruments, compilation of data bases, and methodology development fits into this initiative. Other new work in tunneling microscopy in support of DOE's Human Genome Program and the comprehensive R ampersand D work related to surface-enhanced Raman spectroscopy have attained new and exciting results. These examples of our progress and numerous other activities are highlighted in this report

Health and Safety Research Division progress report, October 1, 1988--March 31, 1990

Energy Technology Data Exchange (ETDEWEB)

1990-09-01

The Health and Safety Research Division (HASRD) of the Oak Ridge National Laboratory (ORNL) continues to maintain an outstanding program of basic and applied research displaying a high level of creativity and achievement as documented by awards, publications, professional service, and successful completion of variety of projects. Our focus is on human health and the scientific basis for measurement and assessment of health-related impacts of energy technologies. It is our custom to publish a division progress report every 18 months that summarizes our programmatic progress and other measures of achievement over the reporting period. Since it is not feasible to summarize in detail all of our work over the period covered by this report (October 1, 1988, to March 30, 1990), we intend this document to point the way to the expensive open literature that documents our findings. During the reporting period the Division continued to maintain strong programs in its traditional areas of R D, but also achieved noteworthy progress in other areas. Much of the Division's work on site characterization, development of new field instruments, compilation of data bases, and methodology development fits into this initiative. Other new work in tunneling microscopy in support of DOE's Human Genome Program and the comprehensive R D work related to surface-enhanced Raman spectroscopy have attained new and exciting results. These examples of our progress and numerous other activities are highlighted in this report.

Environmental Sciences Division annual progress report for period ending September 30, 1993

Energy Technology Data Exchange (ETDEWEB)

1994-05-01

This progress report summarizes the research and development activities conducted in the Environmental Sciences Division (ESD) of Oak Ridge National Laboratory during fiscal year (FY) 1993, which extended from October 1, 1992, through September 30, 1993. The report is structured to provide descriptions of current activities and accomplishments in each of the division`s major organizational units. Following the sections describing the organizational units are sections highlighting ESD Scientific, Technical, and Administrative Achievement awards and listing information necessary to convey the scope of the work in the division. An organizational chart of staff and long-term guests who were in ESD and the end of FY 1993 is located in the final section of the report.

Environmental Sciences Division annual progress report for period ending September 30, 1994

Energy Technology Data Exchange (ETDEWEB)

NONE

1994-12-31

This progress report summarizes the research and development activities conducted in the Environmental Sciences Division (ESD) of Oak Ridge National Laboratory during fiscal year (FY) 1994, which extended from October 1, 1993, through September 30, 1994. The report is structured to provide descriptions of current activities and accomplishments in each of the division`s major organizational units. Following the sections describing the organizational units are sections highlighting ESD Scientific, Technical, and Administrative Achievement awards and listing information necessary to covey the scope of the work in the division. An organizational chart of staff and long-term guests who wee in ESD at the end of FY 1994 is located in the final section of the report.

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

International Nuclear Information System (INIS)

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

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

International Nuclear Information System (INIS)

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

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.

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.

Physics Division progress report, Special 50th anniversary issue, January 1, 1992--December 31, 1992

International Nuclear Information System (INIS)

Shera, E.B.; Hollen, G.Y.

1993-01-01

This special anniversary issue of the Physics Division progress report presents a series of articles that describe the missions and projects of the past and present Physics Division Leaders during their respective tenures. The report also includes selected accounts of significant progress in research and development achieved by Physics Division personnel during the period January 1, 1992, through December 31, 1992, a general description of the goals and interests of the Division, and a list of publications produced during this period. The report represents the three main areas of experimental research and development in which the Physics Division serves the needs of Los Alamos National Laboratory and the nation in defense and basic sciences: (1) fundamental research in nuclear and particle physics, condensed-matter physics, and biophysics; (2) laser physics and applications, especially to high-density plasmas; and (3) defense physics, including the development of diagnostic methods for weapons tests, weapons-related high energy-density physics, and other programs

Theoretical Division progress report

International Nuclear Information System (INIS)

Cooper, N.G.

1979-04-01

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

Energy Division annual progress report for period ending September 30, 1988

International Nuclear Information System (INIS)

1989-06-01

The goals and accomplishments of the Energy Division of Oak Ridge National Laboratory are described in this annual progress report for Fiscal Year (FY) 1988. The Energy Division is a multidisciplinary research organization committed to (1) increasing the knowledge and understanding of the way society makes choices in energy use and energy-using technologies, (2) improving society's understanding of the environmental implications of changes in energy technology, and (3) improving and developing new energy-efficient technologies. The Energy Division's programmatic activities focus on four major areas: (1) analysis and assessment, (2) transportation and decision systems research, (3) technology research and development for improving the efficiency of energy and end-use technologies, and (4) electric power systems. The Division's total expenditures in FY 1988 were $44.3 million. The work is supported by the US Department of Energy, US Department of Defense, many other federal agencies, and some private organizations. Disciplines of the 139 staff members include engineering, social sciences, physical and life sciences, and mathematics and statistics

Energy Division annual progress report for period ending September 30, 1991

Energy Technology Data Exchange (ETDEWEB)

Stone, J.N. [ed.

1992-04-01

The Energy Division is one of 17 research divisions at Oak Ridge Laboratory. Its goals and accomplishments are described in this annual progress report for FY 1991. The division`s total expenditures in FY 1991 were $39.1 million. The work is supported by the US Department of Energy, US Department of Defense, many other federal agencies, and some private organizations. Disciplines of the 124 technical staff members include engineering, social sciences, physical and life sciences, and mathematics and statistics. The Energy Division`s programmatic activities focus on three major areas: (1) analysis and assessment, (2) energy conservation technologies, and (3) military transportation systems. Analysis and assessment activities cover energy and resource analysis, the preparation of environmental assessments and impact statements, research on waste management, analysis of emergency preparedness for natural and technological disasters, analysis of the energy and environmental needs of developing countries, technology transfer, and analysis of civilian transportation. Energy conservation technologies include electric power systems, building equipment (thermally activated heat pumps, advanced refrigeration systems, novel cycles), building envelopes (walls, foundations, roofs, attics, and materials), and technical issues for improving energy efficiency in existing buildings. Military transportation systems concentrate on research for sponsors within the US military on improving the efficiency of military deployment, scheduling, and transportation coordination.

Physics Division progress report, October 1, 1986--September 30, 1987

International Nuclear Information System (INIS)

Shera, E.B.; Sowerwine, H.

1989-05-01

This report provides brief accounts of significant progress in development activities and research results achieved by Physics Division personnel during the period October 1, 1986 through September 30, 1987. These efforts are representative of the three main areas of experimental research and development in which the Physics Division serves Los Alamos National Laboratory's and the nation's needs in defense and basic sciences: defense physics, including the development of diagnostic methods for weapons tests, weapon-related high-energy-density physics, and programs supporting the Strategic Defense Initiative; laser physics and applications, especially to high-density plasmas; and fundamental research in nuclear and particle physics, condensed-matter physics, and biophysics. Throughout the report, emphasis is placed on the design, construction, and application of a variety of advanced, often unique, instruments and instrument systems that maintain the Division's position at the leading edge of research and development in the specific fields germane to its mission

Environmental Sciences Division annual progress report for period ending September 30, 1994

International Nuclear Information System (INIS)

1994-01-01

This progress report summarizes the research and development activities conducted in the Environmental Sciences Division (ESD) of Oak Ridge National Laboratory during fiscal year (FY) 1994, which extended from October 1, 1993, through September 30, 1994. The report is structured to provide descriptions of current activities and accomplishments in each of the division's major organizational units. Following the sections describing the organizational units are sections highlighting ESD Scientific, Technical, and Administrative Achievement awards and listing information necessary to covey the scope of the work in the division. An organizational chart of staff and long-term guests who wee in ESD at the end of FY 1994 is located in the final section of the report

Environmental Sciences Division annual progress report for period ending September 30, 1993

International Nuclear Information System (INIS)

1994-05-01

This progress report summarizes the research and development activities conducted in the Environmental Sciences Division (ESD) of Oak Ridge National Laboratory during fiscal year (FY) 1993, which extended from October 1, 1992, through September 30, 1993. The report is structured to provide descriptions of current activities and accomplishments in each of the division's major organizational units. Following the sections describing the organizational units are sections highlighting ESD Scientific, Technical, and Administrative Achievement awards and listing information necessary to convey the scope of the work in the division. An organizational chart of staff and long-term guests who were in ESD and the end of FY 1993 is located in the final section of the report

Progress report of Applied Physics Division. 1 October 1980 - 30 June 1981. Acting Division Chief - Dr. J. Parry

International Nuclear Information System (INIS)

2004-01-01

In September 1980, the Commission approved a reorganization of Physics Division, Engineering Research Division and Instrumentation and Control Division to form two new research divisions to be known as Applied Physics Division and Nuclear Technology Division. The Applied Physics Division will be responsible for applied science programs, particularly those concerned with nuclear techniques. The Division is organized as four sections with the following responsibilities: (1) Nuclear Applications and Energy Studies Section. Program includes studies in nuclear physics, nuclear applications, ion implantation and neutron scattering. (2) Semiconductor and Radiation Physics Section. Studies in semiconductor radiation detectors, radiation standards and laser applications. (3) Electronic Systems Section. This includes systems analysis, digital systems, instrument design, project instrumentation and instrument maintenance. (4) Fusion Physics Section. This covers work carried out by staff currently attached to university groups (author)

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.

Chemical Technology Division progress report, July 1, 1991--December 31, 1992

International Nuclear Information System (INIS)

Genung, R.K.; Hightower, J.R.; Bell, J.T.

1993-05-01

This progress report reviews the mission of the Chemical Technology Division (Chem Tech) and presents a summary of organizational structure, programmatic sponsors, and funding levels for the period July 1, 1991, through December 31, 1992. The report also summarizes the missions and activities of organizations within Chem Tech for the reporting period. Specific projects performed within Chem Tech's energy research programs, waste and environmental programs, and radiochemical processing programs are highlighted. Special programmatic activities conducted by the division are identified and described. Other information regarding publications, patents, awards, and conferences organized by Chem Tech staff is also included

Energy Division annual progress report for period ending September 30, 1992

Energy Technology Data Exchange (ETDEWEB)

Counce, D.M.; Wolff, P.P. [eds.

1993-04-01

Energy Division`s mission is to provide innovative solutions to energy and related Issues of national and global importance through interdisciplinary research and development. Its goals and accomplishments are described in this annual progress report for FY 1992. Energy Division`s total expenditures in FY 1992 were $42.8 million. The work is supported by the US Department of Energy, the US Department of Defense, many other federal agencies, and some private organizations. Disciplines of the 116.5 technical staff members include engineering, social sciences, physical and life sciences, and mathematics and statistics. The division`s programmatic activities cover three main areas: (1) analysis and assessment, (2) energy conservation technologies, and (3) military transportation systems. Analysis and assessment activities involve energy and resource analysis, preparation of environmental assessments and impact statements, research on waste management, technology transfer, analysis of energy and environmental needs in developing countries, and civilian transportation analysis. Energy conservation technologies focus on electric power systems, building envelopes (walls, foundations, roofs, attics, and materials), and methods to improve energy efficiency in existing buildings. Military transportation systems conduct research for sponsors within the US military to improve the efficiency of military deployment, scheduling, and transportation coordination. Much of Energy Division`s research is valuable to other organizations as well as to sponsors. This information is disseminated by the staff`s involvement in professional and trade organizations and workshops; joint research with universities and private-sector firms; collaboration with state and local governments; presentation of work at conferences; and publication of research results in journals, reports, and conference proceedings.

Progress report, Physics Division, July 1 to September 30, 1976

International Nuclear Information System (INIS)

1976-10-01

Progress in the Physics Division, Chalk River Nuclear Laboratories, is reported for the period July 1 to September 30, 1976. Operation of the MP Tandem accelerator is described. Design highlights are provided for a proposed superconcucting cyclotron. Elastic and inelastic scattering experiments, many conducted in cooperation with other laboratories, are summarized. Activities of the Chalk River computation centre are also described. (O.T.)

Engineering Physics and Mathematics Division progress report for period ending March 31, 1991

International Nuclear Information System (INIS)

1991-10-01

The primary purpose of this report is to provide an archival record of the activities of the Engineering Physics and Mathematics Division during the period September 1, 1989 through March 31, 1991. Earlier reports in this series are identified on the previous pages, along with the progress reports describing ORNL's research on the mathematical sciences prior to 1984 when those activities moved into the division. As in previous reports, our research is described through abstracts of journal articles, technical reports, and presentations. Summary lists of publications and presentations, staff additions and departures, scientific and professional activities of division staff, and technical conferences organized and sponsored by the division are included as appendices. The report is organized following the division of our research among four sections and information centers. These research areas are: Mathematical Sciences; Nuclear Data Measurement and Evaluations; Intelligent Systems; Nuclear Analysis and Shielding; and Engineering Physics Information Center

Environmental Sciences Division. Annual progress report for period ending September 30, 1979

International Nuclear Information System (INIS)

1980-03-01

Progress for the period ending September 30, 1979 by the Environmental Sciences Division is reported. Sections reporting include terrestrial ecoloy; earth sciences; environmental resources; aquatic ecology; synthetic fuels; nuclear program; environmental impacts program; ecosystem studies; and burial ground technology

Energy Division annual progress report for period ending September 30, 1993

Energy Technology Data Exchange (ETDEWEB)

Wolff, P.P. [ed.

1994-07-01

One of 17 research divisions at Oak Ridge National Laboratory, Energy Division`s mission is to provide innovative solutions to energy and related issues of national and global importance through interdisciplinary research and development. Its goals and accomplishments are described in this annual progress report for FY1993. Energy Division is committed to (1) understanding the mechanisms by which societies make choices in energy use; (2) improving society`s understanding of the environmental, social, and economic implications of technological change; (3) developing and transferring energy-efficient technologies; (4) improving transportation policy and planning; (5) enhancing basic knowledge in the social sciences as related to energy and associated issues. Energy Division`s expenditures in FY1993 totaled $42 million. The work was supported by the US DOE, DOD, many other federal agencies, and some private organizations. Disciplines of the 126.5 technical staff members include engineering, social sciences, physical and life sciences, and computer sciences and data systems. The division`s programmatic activities cover three main areas: (1) analysis and assessment, (2) energy use and delivery technologies, and (3) transportation systems. Analysis and assessment activities involve energy and resource analysis, preparation of environmental assessments and impact statements, research on emergency preparedness, transportation analysis, and analysis of energy and environmental needs in developing countries. Energy use and delivery technologies focus on electric power systems, building equipment, building envelopes (walls, foundations, roofs, attics, and materials), and methods to improve energy efficiency in existing buildings. Transportation systems research is conducted both to improve the quality of civilian transportation and for sponsors within the US military to improve the efficiency of deployment, scheduling, and transportation coordination.

Physics Division progress report, January 1, 1984-September 30, 1986

International Nuclear Information System (INIS)

Keller, W.E.

1987-10-01

This report provides brief accounts of significant progress in development activities and research results achieved by Physics Division personnel during the period January 1, 1984, through September 31, 1986. These efforts are representative of the three main areas of experimental research and development in which the Physics Division serves Los Alamos National Laboratory's and the Nation's needs in defense and basic sciences: (1) defense physics, including the development of diagnostic methods for weapons tests, weapon-related high-energy-density physics, and programs supporting the Strategic Defense Initiative; (2) laser physics and applications, especially to high-density plasmas; and (3) fundamental research in nuclear and particle physics, condensed-matter physics, and biophysics. Throughout the report, emphasis is placed on the design, construction, and application of a variety of advanced, often unique, instruments and instrument systems that maintain the Division's position at the leading edge of research and development in the specific fields germane to its mission. A sampling of experimental systems of particular interest would include the relativistic electron-beam accelerator and its applications to high-energy-density plasmas; pulsed-power facilities; directed energy weapon devices such as free-electron lasers and neutral-particle-beam accelerators; high-intensity ultraviolet and x-ray beam lines at the National Synchrotron Light Source (at Brookhaven National Laboratory); the Aurora KrF ultraviolet laser system for projected use as an inertial fusion driver; antiproton physics facility at CERN; and several beam developments at the Los Alamos Meson Physics Facility for studying nuclear, condensed-matter, and biological physics, highlighted by progress in establishing the Los Alamos Neutron Scattering Center

Health physics division annual progress report for period ending June 30, 1977

Energy Technology Data Exchange (ETDEWEB)

1978-07-01

This annual progress report follows, as in the past, the organizational structure of the Health Physics Division. Each part is a report of work done by a section of the division: Assessment and Technology Section (Part I), headed by H.W. Dickson; Biological and Radiation Physics Section (Part II), H.A. Wright; Chemical Physics and Spectroscopy Section (Part III), W.R. Garrett; Emergency Technology Section (Part IV), C.V. Chester, Medical Physics and Internal Dosimetry Section (Part V), K.E. Cowser; and the Analytic Dosimetry and Education Group (Part VI), J.E. Turner.

Experimental Facilities Division. Progress report 1996-97

International Nuclear Information System (INIS)

1997-04-01

This progress report summarizes the activities of the Experimental Facilities Division (XFD) in support of the users of the Advanced Photon Source (APS), primarily focusing on the past year of operations. In September 1996, the APS began operations as a national user facility serving the US community of x-ray researchers from private industry, academic institutions, and other research organizations. The start of operations was about three months ahead of the baseline date established in 1988. This report is divided into the following sections: (1) overview; (2) user operations; (3) user administration and technical support; (4) R and D in support of view operations; (5) collaborative research; and (6) long-term strategic plans for XFD

Experimental Facilities Division progress report 1996--97

Energy Technology Data Exchange (ETDEWEB)

NONE

1997-04-01

This progress report summarizes the activities of the Experimental Facilities Division (XFD) in support of the users of the Advanced Photon Source (APS), primarily focusing on the past year of operations. In September 1996, the APS began operations as a national user facility serving the US community of x-ray researchers from private industry, academic institutions, and other research organizations. The start of operations was about three months ahead of the baseline date established in 1988. This report is divided into the following sections: (1) overview; (2) user operations; (3) user administration and technical support; (4) R and D in support of view operations; (5) collaborative research; and (6) long-term strategic plans for XFD.

Progress report, October 1 to December 31, 1959. Physics Division

International Nuclear Information System (INIS)

1959-01-01

This is a progress report of the Physics Division at Chalk River Nuclear Laboratories from October 1, to December 31, 1959. It describes the research in nuclear physics, general physics, theoretical physics and electronics. The research areas covered in this report include nuclear structure, the tandem accelerator, particle detector development, developments in electronics, neutron decay, beta ray spectrometer, fission studies, electronics development and neutron transport theory.

Engineering Physics and Mathematics Division progress report for period ending March 31, 1991

Energy Technology Data Exchange (ETDEWEB)

1991-10-01

The primary purpose of this report is to provide an archival record of the activities of the Engineering Physics and Mathematics Division during the period September 1, 1989 through March 31, 1991. Earlier reports in this series are identified on the previous pages, along with the progress reports describing ORNL's research on the mathematical sciences prior to 1984 when those activities moved into the division. As in previous reports, our research is described through abstracts of journal articles, technical reports, and presentations. Summary lists of publications and presentations, staff additions and departures, scientific and professional activities of division staff, and technical conferences organized and sponsored by the division are included as appendices. The report is organized following the division of our research among four sections and information centers. These research areas are: Mathematical Sciences; Nuclear Data Measurement and Evaluations; Intelligent Systems; Nuclear Analysis and Shielding; and Engineering Physics Information Center.

Environmental Sciences Division annual progress report for period ending September 30, 1982. Environmental Sciences Division Publication No. 2090

International Nuclear Information System (INIS)

1983-04-01

Separate abstracts were prepared for 12 of the 14 sections of the Environmental Sciences Division annual progress report. The other 2 sections deal with educational activities. The programs discussed deal with advanced fuel energy, toxic substances, environmental impacts of various energy technologies, biomass, low-level radioactive waste management, the global carbon cycle, and aquatic and terrestrial ecology

Progress report, Physics Division, 1 October - 31 December, 1981

International Nuclear Information System (INIS)

1982-03-01

The work of the Physics Division during the quarter is reviewed. Nuclear physics activities included parity violation experiments, mass difference measurements using the ISOL facility, studies of high spin state decays, and scattering length measurements. In accelerator physics, construction of the heavy-ion superconducting cyclotron continued and development of the fast intense neutron source and the high current proton accelerator progressed. Neutron scattering experiments were carried out on a number of solids. Work in applied mathematics and computation is also reviewed

Division 1137 property control system

Energy Technology Data Exchange (ETDEWEB)

Pastor, D.J.

1982-01-01

An automated data processing property control system was developed by Mobile and Remote Range Division 1137. This report describes the operation of the system and examines ways of using it in operational planning and control.

Progress report - Health Sciences Division - 1985 July 01 -December 31

International Nuclear Information System (INIS)

1986-02-01

This progress report contains a topical summary of major research in the Health Sciences Division. Separate reports are included for each of the following branches: Dosimetric Research, Environmental Research, Radiation Biology, and Medical. Some of the aspects discussed include measurement and application of environmental isotopes, dosimetry and employee monitoring, environmental processes of radioisotope transport, the effects of ionizing radiation on living cells (cancer, hyperthermia, DNA, etc.), and statistics of hospital procedures

Progress report, Physics Division, July 1 to September 30, 1975

International Nuclear Information System (INIS)

1975-10-01

Progress in the Physics Division, CRNL, for the period July 1 to September 30, 1975 is reported. Operation of the MP tandem accelerator and design studies for a superconducting heavy ion cyclotron are summarized. Research on nuclear reactions and radioisotope decay is reported. Studies of neutron scattering on liquid helium and properties of ferromagnetic alloys are presented. A summary of computing centre operations is also provided. (O.T.)

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

International Nuclear Information System (INIS)

Datta, T.

1987-01-01

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)

Instrumentation and Controls Division progress report, September 1, 1980-July 1, 1982

Energy Technology Data Exchange (ETDEWEB)

Klobe, L.E.E. (ed.)

1982-12-01

Activities are reported by the Reactor Systems Section, Research Instrument Section, and the Measurement and Controls Engineering Section. Reactor system activities include dynamic analysis, survillanc and diagnostic methods, design and evaluation, detectors, facilities support, process instrumentation development, and special assignments. Activities in the Research Instrument Section include the Navy-ORNL RADIAC development program, advanced ..gamma.. and x ray detector systems, neutron detection and subcriticality measurements, circuit development, position-sensitive detectors, stand-alone computers, environmental monitoring-detectors and systems, plant security, engineering support for fusion energy division, engineering support for accelerator physics, and communications: radio, closed-circuit tv, and computer. Activities in the Measurement and Controls Engineering Section include the AVLIS program; gas centrifuge enrichment technology support; Advanced Instrumentation for Reflood Studies (AIDRS) program; instrumentation development support for fuel reprocessing; in-core experiments and reactor systems; energy, conservation, and electric power systems; computer systems; measurements research; and fossil energy studies Publications are listed. (WHK)

Instrumentation and Controls Division progress report, September 1, 1980-July 1, 1982

International Nuclear Information System (INIS)

Klobe, L.E.E.

1982-12-01

Activities are reported by the Reactor Systems Section, Research Instrument Section, and the Measurement and Controls Engineering Section. Reactor system activities include dynamic analysis, survillanc and diagnostic methods, design and evaluation, detectors, facilities support, process instrumentation development, and special assignments. Activities in the Research Instrument Section include the Navy-ORNL RADIAC development program, advanced #betta# and x ray detector systems, neutron detection and subcriticality measurements, circuit development, position-sensitive detectors, stand-alone computers, environmental monitoring-detectors and systems, plant security, engineering support for fusion energy division, engineering support for accelerator physics, and communications: radio, closed-circuit tv, and computer. Activities in the Measurement and Controls Engineering Section include the AVLIS program; gas centrifuge enrichment technology support; Advanced Instrumentation for Reflood Studies (AIDRS) program; instrumentation development support for fuel reprocessing; in-core experiments and reactor systems; energy, conservation, and electric power systems; computer systems; measurements research; and fossil energy studies Publications are listed

Physics Division progress report, January 1, 1984-September 30, 1986

Energy Technology Data Exchange (ETDEWEB)

Keller, W.E. (comp.)

1987-10-01

This report provides brief accounts of significant progress in development activities and research results achieved by Physics Division personnel during the period January 1, 1984, through September 31, 1986. These efforts are representative of the three main areas of experimental research and development in which the Physics Division serves Los Alamos National Laboratory's and the Nation's needs in defense and basic sciences: (1) defense physics, including the development of diagnostic methods for weapons tests, weapon-related high-energy-density physics, and programs supporting the Strategic Defense Initiative; (2) laser physics and applications, especially to high-density plasmas; and (3) fundamental research in nuclear and particle physics, condensed-matter physics, and biophysics. Throughout the report, emphasis is placed on the design, construction, and application of a variety of advanced, often unique, instruments and instrument systems that maintain the Division's position at the leading edge of research and development in the specific fields germane to its mission. A sampling of experimental systems of particular interest would include the relativistic electron-beam accelerator and its applications to high-energy-density plasmas; pulsed-power facilities; directed energy weapon devices such as free-electron lasers and neutral-particle-beam accelerators; high-intensity ultraviolet and x-ray beam lines at the National Synchrotron Light Source (at Brookhaven National Laboratory); the Aurora KrF ultraviolet laser system for projected use as an inertial fusion driver; antiproton physics facility at CERN; and several beam developments at the Los Alamos Meson Physics Facility for studying nuclear, condensed-matter, and biological physics, highlighted by progress in establishing the Los Alamos Neutron Scattering Center.

Progress report of the Metallurgy Division for the period 1978-1980

International Nuclear Information System (INIS)

Sharma, B.D.; Mohan, Ashok; Bose, D.K.; Rao, C.N.; Chouthai, S.S.

1980-01-01

The research and development (R and D) work of the Metallurgy Division of the Bhabha Atomic Research Centre at Bombay for the period 1978-1980 is reported in the form of individual summaries under the headings: extractive metallurgy section, physical metallurgy section, corrosion and electrometallurgy section, ceramics section. Progress of work of beryllium pilot plant project, programme for R-5 utilisation for materials irradiation research project, development of rare, reactive and refractory metals, and development of ceramics materials for MHD programme is surveyed. Lists of publications, deputations, visits, conferences, colloquia are given. A chart at the end shows the various sections of the Division and personnel in each section. (M.G.B.)

Environmental and Medical Sciences Division progress report January - December, 1980

International Nuclear Information System (INIS)

Hainge, W.M.

1982-02-01

A progress report on the work performed during 1980 by the Environmental and Medical Sciences Division at UKAEA Harwell is given. The programmes considered were atmospheric pollution; landfill research; monitoring of radioactive fallout and other radionuclides and trace elements in the environment; radioactive and non-radioactive aerosol metabolic studies; inhalation toxicology of radioactive aerosols and other hazardous materials; chemical analytical services; and radiation physics in dosimetry research, applied radiation spectrometry and data systems. (U.K.)

Progress report Health Sciences Division - 1984 July 01 to December 31

International Nuclear Information System (INIS)

1985-02-01

This progress report contains a topical summary of major research in the Health Sciences Division. Separate reports are included for each of the following branches: Health Physics, Environmental Research, Radiation Biology, Biomedical Research and Medical. Some of the main areas of interest discussed are health and safety aspects of tritium. This includes instrumentation, environmental studies, metabolism, dosimetry and health effects

Applied Chemistry Division progress report for the period 1990-1992

International Nuclear Information System (INIS)

Bharadwaj, S.R.; Kishore, K.; Ramshesh, V.

1993-01-01

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

Progress report Physical and Environmental Sciences TASCC Division 1994 July 1 to December 31

Energy Technology Data Exchange (ETDEWEB)

NONE

1995-05-01

The TASCC division of the Physics and Environmental Sciences releases this progress report to overview the research and instrumentation and facility development. The accelerator operation was smooth for the Tandem and rather difficult for the cyclotron. Progress has been made on all major development projects. A listing is included of all publications, reports, lectures and conference contributions. 14 tabs., 28 figs.

Progress report Physical and Environmental Sciences TASCC Division 1994 July 1 to December 31

International Nuclear Information System (INIS)

1995-05-01

The TASCC division of the Physics and Environmental Sciences releases this progress report to overview the research and instrumentation and facility development. The accelerator operation was smooth for the Tandem and rather difficult for the cyclotron. Progress has been made on all major development projects. A listing is included of all publications, reports, lectures and conference contributions. 14 tabs., 28 figs

Energy Division annual progress report for period ending September 30, 1991

Energy Technology Data Exchange (ETDEWEB)

Stone, J.N. (ed.)

1992-04-01

The Energy Division is one of 17 research divisions at Oak Ridge Laboratory. Its goals and accomplishments are described in this annual progress report for FY 1991. The division's total expenditures in FY 1991 were $39.1 million. The work is supported by the US Department of Energy, US Department of Defense, many other federal agencies, and some private organizations. Disciplines of the 124 technical staff members include engineering, social sciences, physical and life sciences, and mathematics and statistics. The Energy Division's programmatic activities focus on three major areas: (1) analysis and assessment, (2) energy conservation technologies, and (3) military transportation systems. Analysis and assessment activities cover energy and resource analysis, the preparation of environmental assessments and impact statements, research on waste management, analysis of emergency preparedness for natural and technological disasters, analysis of the energy and environmental needs of developing countries, technology transfer, and analysis of civilian transportation. Energy conservation technologies include electric power systems, building equipment (thermally activated heat pumps, advanced refrigeration systems, novel cycles), building envelopes (walls, foundations, roofs, attics, and materials), and technical issues for improving energy efficiency in existing buildings. Military transportation systems concentrate on research for sponsors within the US military on improving the efficiency of military deployment, scheduling, and transportation coordination.

Energy Division annual progress report for period ending September 30, 1990

Energy Technology Data Exchange (ETDEWEB)

Selden, R.H. (ed.)

1991-06-01

The Energy Division is one of 17 research divisions at Oak Ridge National Laboratory. The goals and accomplishments of the Energy Division are described in this annual progress report for FY 1990. The Energy Division is a multidisciplinary research organization committed to (1) increasing the knowledge and understanding of how societies make choices in energy use; (2) improving society's understanding of the environmental, social, and economic implications of technological change; (3) developing and transferring energy efficient technologies; and (4) developing improved transportation planning and policy. Disciplines of the 129 staff members include engineering, social sciences, physical and life sciences, and mathematics and statistics. The Energy Division's programmatic activities focus on three major areas: (1) analysis and assessment, (2) energy conservation technologies, and (3) military transportation systems. Analysis and assessment activities cover energy and resource analysis, the preparation of environmental assessments and impact statements, research on waste management, analysis of emergency preparedness for natural and technological disasters, analysis of the energy and environmental needs of developing countries, technology transfer, and analysis of civilian transportation. Energy conservation technologies include building equipment (thermally activated heat pumps, chemical heat pumps, refrigeration systems, novel cycles), building enveloped (walls, foundations, roofs, attics, and materials), retrofits for existing buildings, and electric power systems. Military transportation systems concentrate on research for sponsors within the US military on improving the efficiency of military deployment, scheduling, and transportation coordination. 48 refs., 34 figs., 7 tabs.

Instrumentation and Controls Division annual progress report for period ending September 1, 1974. Non-LMFBR program

International Nuclear Information System (INIS)

Sadowski, G.S.

1976-09-01

Research projects are summarized under the following categories: (1) basic electronics development; (2) engineering support for research facilities; (3) pulse counting and analysis; (4) radiation detection and monitoring; (5) instrument development; (6) automatic control and data acquisition; (7) process systems and instrumentation development; (8) reactor instrumentation and controls; (9) fuel reprocessing and shipping; (10) standards laboratory; (11) instrumentation for reactor division experiments and test loops; (12) maintenance and service; (13) ecological science studies; and (14) administration and training

Instrumentation and Controls Division annual progress report for period ending September 1, 1974. Non-LMFBR program

Energy Technology Data Exchange (ETDEWEB)

Sadowski, G.S. (comp.)

1976-09-01

Research projects are summarized under the following categories: (1) basic electronics development; (2) engineering support for research facilities; (3) pulse counting and analysis; (4) radiation detection and monitoring; (5) instrument development; (6) automatic control and data acquisition; (7) process systems and instrumentation development; (8) reactor instrumentation and controls; (9) fuel reprocessing and shipping; (10) standards laboratory; (11) instrumentation for reactor division experiments and test loops; (12) maintenance and service; (13) ecological science studies; and (14) administration and training. (WHK)

Progress report April 1, to June 30, 1956. Physics Division

Energy Technology Data Exchange (ETDEWEB)

NONE

1956-07-01

This is a progress report of the Physics Division at Chalk River Nuclear Laboratories from April 1, to June 30, 1956. It describes the research in nuclear physics, general physics; theoretical physics and electronics. The research areas covered in this report include nuclear reactions, nuclear decay, neutron capture gamma ray spectra, NRX production of plutonium and its higher isotopes, slow neutron spectrometry, neutron diffraction, gamma ray crystal spectrometry, theory of binary fission and analysis of neutron scattering data.

Progress report April 1, to June 30, 1956. Physics Division

International Nuclear Information System (INIS)

1956-01-01

This is a progress report of the Physics Division at Chalk River Nuclear Laboratories from April 1, to June 30, 1956. It describes the research in nuclear physics, general physics; theoretical physics and electronics. The research areas covered in this report include nuclear reactions, nuclear decay, neutron capture gamma ray spectra, NRX production of plutonium and its higher isotopes, slow neutron spectrometry, neutron diffraction, gamma ray crystal spectrometry, theory of binary fission and analysis of neutron scattering data.

Progress report Health Sciences Division - 1984 January 1 to June 30

International Nuclear Information System (INIS)

1984-09-01

This progress report contains a topical summary of major research in the Health Sciences Division. Separate reports are included for each of the following branches: Health Physics, Environmental Research, Radiation Biology, Biomedical Research and Medical. Some of the main areas of interest discussed are research goals, radiation levels, biological end points, assessment of carcinogenic and genetic hazards, research on radiation effects. Practical applications of research are highlighted

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.

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

International Nuclear Information System (INIS)

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

Radiochemistry Division biennial progress report: 1995-1996

International Nuclear Information System (INIS)

Tomar, B.S.; Pujari, P.K.; Mathur, J.N.; Mohapatra, P.K.; Murali, M.S.; Natarajan, V.; Jayanthakumar, M.L.

1997-01-01

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)

Radiochemistry Division biennial progress report: 1995-1996

Energy Technology Data Exchange (ETDEWEB)

Tomar, B S; Pujari, P K; Mathur, J N; Mohapatra, P K; Murali, M S; Natarajan, V; Jayanthakumar, M L [eds.; Radiochemistry Division, Bhabha Atomic Research Centre, Mumbai (India)

1998-12-31

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)

Environmental Sciences Division annual progress report for period ending September 30, 1982. Environmental Sciences Division Publication No. 2090. [Lead abstract

Energy Technology Data Exchange (ETDEWEB)

1983-04-01

Separate abstracts were prepared for 12 of the 14 sections of the Environmental Sciences Division annual progress report. The other 2 sections deal with educational activities. The programs discussed deal with advanced fuel energy, toxic substances, environmental impacts of various energy technologies, biomass, low-level radioactive waste management, the global carbon cycle, and aquatic and terrestrial ecology. (KRM)

Applied Chemistry Division progress report for the period 1993-1995

Energy Technology Data Exchange (ETDEWEB)

Naik, D. B.; Ramshesh, V.; Wani, B. N. [eds.; Bhabha Atomic Research Centre, Mumbai (India). Applied Chemistry Div.

1997-09-01

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.

Energy Division annual progress report for period ending September 30, 1988: Volume 2

Energy Technology Data Exchange (ETDEWEB)

1989-06-01

The goals and accomplishments of the Energy Division of Oak Ridge National Laboratory are described in this annual progress report for Fiscal Year (FY) 1988. The Energy Division is a multidisciplinary research organization committed to (1) increasing the knowledge and understanding of the way society makes choices in energy use and energy-using technologies, (2) improving society's understanding of the environmental implications of changes in energy technology, and (3) improving and developing new energy-efficient technologies. The Energy Division's programmatic activities focus on four major areas: (1) analysis and assessment, (2) transportation and decision systems research, (3) technology research and development for improving the efficiency of energy and end-use technologies, and (4) electric power systems. The Division's total expenditures in FY 1988 were $44.3 million. The work is supported by the US Department of Energy, US Department of Defense, many other federal agencies, and some private organizations. Disciplines of the 139 staff members include engineering, social sciences, physical and life sciences, and mathematics and statistics.

Progress report: 1996 Radiation Safety Systems Division

International Nuclear Information System (INIS)

Bhagwat, A.M.; Sharma, D.N.; Abani, M.C.; Mehta, S.K.

1997-01-01

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)

Progress report - Physical and Environmental Sciences - TASCC Division -1995 January 1 to June 30

Energy Technology Data Exchange (ETDEWEB)

NONE

1995-08-01

Included in this progress report of the TASCC division at Chalk River Nuclear Laboratories is the research and development being carried out at this time and a listing of the relevant publications, reports. lectures and conference contributions. 15 tabs. 19 figs.

Progress report - Physical and Environmental Sciences - TASCC Division -1995 January 1 to June 30

International Nuclear Information System (INIS)

1995-08-01

Included in this progress report of the TASCC division at Chalk River Nuclear Laboratories is the research and development being carried out at this time and a listing of the relevant publications, reports. lectures and conference contributions. 15 tabs. 19 figs

Energy Division annual progress report for period ending September 30, 1993

International Nuclear Information System (INIS)

Wolff, P.P.

1994-07-01

One of 17 research divisions at Oak Ridge National Laboratory, Energy Division's mission is to provide innovative solutions to energy and related issues of national and global importance through interdisciplinary research and development. Its goals and accomplishments are described in this annual progress report for FY1993. Energy Division is committed to (1) understanding the mechanisms by which societies make choices in energy use; (2) improving society's understanding of the environmental, social, and economic implications of technological change; (3) developing and transferring energy-efficient technologies; (4) improving transportation policy and planning; (5) enhancing basic knowledge in the social sciences as related to energy and associated issues. Energy Division's expenditures in FY1993 totaled $42 million. The work was supported by the US DOE, DOD, many other federal agencies, and some private organizations. Disciplines of the 126.5 technical staff members include engineering, social sciences, physical and life sciences, and computer sciences and data systems. The division's programmatic activities cover three main areas: (1) analysis and assessment, (2) energy use and delivery technologies, and (3) transportation systems. Analysis and assessment activities involve energy and resource analysis, preparation of environmental assessments and impact statements, research on emergency preparedness, transportation analysis, and analysis of energy and environmental needs in developing countries. Energy use and delivery technologies focus on electric power systems, building equipment, building envelopes (walls, foundations, roofs, attics, and materials), and methods to improve energy efficiency in existing buildings. Transportation systems research is conducted both to improve the quality of civilian transportation and for sponsors within the US military to improve the efficiency of deployment, scheduling, and transportation coordination

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

International Nuclear Information System (INIS)

Ryan, R.R.

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

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.

Nuclear Physics Divisions progress report for the period 1st January to 31st December 1979

International Nuclear Information System (INIS)

Sofield, C.J.; Lees, E.W.; Longworth, G.

1980-04-01

The annual progress report of the Nuclear Physics Division of the Atomic Energy Research Division of the Atomic Energy Research Establishment, Harwell for 1979, is presented under the headings; nuclear data and technology for nuclear power, nuclear studies, applications of nuclear and associated techniques, and accelerator operation, maintenance and development. Lists of reports, publications and conference papers and also of divisional, attached and research student staff are appended. (U.K.)

Solid State Division progress report for period ending September 30, 1993

Energy Technology Data Exchange (ETDEWEB)

Green, P.H.; Hinton, L.W. [eds.

1994-08-01

This report covers research progress in the Solid State Division from April 1, 1992, to September 30, 1993. During this period, the division conducted a broad, interdisciplinary materials research program with emphasis on theoretical solid state physics, neutron scattering, synthesis and characterization of materials, ion beam and laser processing, and the structure of solids and surfaces. This research effort was enhanced by new capabilities in atomic-scale materials characterization, new emphasis on the synthesis and processing of materials, and increased partnering with industry and universities. The theoretical effort included a broad range of analytical studies, as well as a new emphasis on numerical simulation stimulated by advances in high-performance computing and by strong interest in related division experimental programs. Superconductivity research continued to advance on a broad front from fundamental mechanisms of high-temperature superconductivity to the development of new materials and processing techniques. The Neutron Scattering Program was characterized by a strong scientific user program and growing diversity represented by new initiatives in complex fluids and residual stress. The national emphasis on materials synthesis and processing was mirrored in division research programs in thin-film processing, surface modification, and crystal growth. Research on advanced processing techniques such as laser ablation, ion implantation, and plasma processing was complemented by strong programs in the characterization of materials and surfaces including ultrahigh resolution scanning transmission electron microscopy, atomic-resolution chemical analysis, synchrotron x-ray research, and scanning tunneling microscopy.

Solid State Division progress report for period ending September 30, 1993

International Nuclear Information System (INIS)

Green, P.H.; Hinton, L.W.

1994-08-01

This report covers research progress in the Solid State Division from April 1, 1992, to September 30, 1993. During this period, the division conducted a broad, interdisciplinary materials research program with emphasis on theoretical solid state physics, neutron scattering, synthesis and characterization of materials, ion beam and laser processing, and the structure of solids and surfaces. This research effort was enhanced by new capabilities in atomic-scale materials characterization, new emphasis on the synthesis and processing of materials, and increased partnering with industry and universities. The theoretical effort included a broad range of analytical studies, as well as a new emphasis on numerical simulation stimulated by advances in high-performance computing and by strong interest in related division experimental programs. Superconductivity research continued to advance on a broad front from fundamental mechanisms of high-temperature superconductivity to the development of new materials and processing techniques. The Neutron Scattering Program was characterized by a strong scientific user program and growing diversity represented by new initiatives in complex fluids and residual stress. The national emphasis on materials synthesis and processing was mirrored in division research programs in thin-film processing, surface modification, and crystal growth. Research on advanced processing techniques such as laser ablation, ion implantation, and plasma processing was complemented by strong programs in the characterization of materials and surfaces including ultrahigh resolution scanning transmission electron microscopy, atomic-resolution chemical analysis, synchrotron x-ray research, and scanning tunneling microscopy

Fusion Energy Division progress report, 1 January 1990--31 December 1991

Energy Technology Data Exchange (ETDEWEB)

Sheffield, J.; Baker, C.C.; Saltmarsh, M.J.

1994-03-01

The Fusion Program of the Oak Ridge National Laboratory (ORNL), a major part of the national fusion program, encompasses nearly all areas of magnetic fusion research. The program is directed toward the development of fusion as an economical and environmentally attractive energy source for the future. The program involves staff from ORNL, Martin Marietta Energy systems, Inc., private industry, the academic community, and other fusion laboratories, in the US and abroad. Achievements resulting from this collaboration are documented in this report, which is issued as the progress report of the ORNL Fusion Energy Division; it also contains information from components for the Fusion Program that are external to the division (about 15% of the program effort). The areas addressed by the Fusion Program include the following: experimental and theoretical research on magnetic confinement concepts; engineering and physics of existing and planned devices, including remote handling; development and testing of diagnostic tools and techniques in support of experiments; assembly and distribution to the fusion community of databases on atomic physics and radiation effects; development and testing of technologies for heating and fueling fusion plasmas; development and testing of superconducting magnets for containing fusion plasmas; development and testing of materials for fusion devices; and exploration of opportunities to apply the unique skills, technology, and techniques developed in the course of this work to other areas (about 15% of the Division`s activities). Highlights from program activities during 1990 and 1991 are presented.

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

International Nuclear Information System (INIS)

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

Radiochemistry Division annual progress report : 1992

International Nuclear Information System (INIS)

Natarajan, V.; Godbole, S.V.; Iyer, R.H.

1994-01-01

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

Progress report - Physical and Environmental Sciences - TASCC Division -1995 July 1 to December 31

Energy Technology Data Exchange (ETDEWEB)

Hardy, J C [ed.

1996-05-01

Included in this progress report of the TASCC division at Chalk River Nuclear Laboratories is the research and development being carried out at this time and a listing of the relevant publications, reports, lectures and conference contributions. The TASCC staff is also detailed. 8 tabs.,16 figs.

Progress report - Physical and Environmental Sciences - TASCC Division -1995 July 1 to December 31

International Nuclear Information System (INIS)

Hardy, J.C.

1996-05-01

Included in this progress report of the TASCC division at Chalk River Nuclear Laboratories is the research and development being carried out at this time and a listing of the relevant publications, reports, lectures and conference contributions. The TASCC staff is also detailed. 8 tabs.,16 figs

Life Sciences Division progress report for CYs 1997-1998[Oak Ridge National Laboratory

International Nuclear Information System (INIS)

Mann, Reinhold C.

1999-01-01

This is the first formal progress report issued by the ORNL Life Sciences Division. It covers the period from February 1997 through December 1998, which has been critical in the formation of our new division. The legacy of 50 years of excellence in biological research at ORNL has been an important driver for everyone in the division to do their part so that this new research division can realize the potential it has to make seminal contributions to the life sciences for years to come. This reporting period is characterized by intense assessment and planning efforts. They included thorough scrutiny of our strengths and weaknesses, analyses of our situation with respect to comparative research organizations, and identification of major thrust areas leading to core research efforts that take advantage of our special facilities and expertise. Our goal is to develop significant research and development (R and D) programs in selected important areas to which we can make significant contributions by combining our distinctive expertise and resources in the biological sciences with those in the physical, engineering, and computational sciences. Significant facilities in mouse genomics, mass spectrometry, neutron science, bioanalytical technologies, and high performance computing are critical to the success of our programs. Research and development efforts in the division are organized in six sections. These cluster into two broad areas of R and D: systems biology and technology applications. The systems biology part of the division encompasses our core biological research programs. It includes the Mammalian Genetics and Development Section, the Biochemistry and Biophysics Section, and the Computational Biosciences Section. The technology applications part of the division encompasses the Assessment Technology Section, the Environmental Technology Section, and the Toxicology and Risk Analysis Section. These sections are the stewards of the division's core competencies. The

Life Sciences Division progress report for CYs 1997-1998 [Oak Ridge National Laboratory

Energy Technology Data Exchange (ETDEWEB)

Mann, Reinhold C.

1999-06-01

This is the first formal progress report issued by the ORNL Life Sciences Division. It covers the period from February 1997 through December 1998, which has been critical in the formation of our new division. The legacy of 50 years of excellence in biological research at ORNL has been an important driver for everyone in the division to do their part so that this new research division can realize the potential it has to make seminal contributions to the life sciences for years to come. This reporting period is characterized by intense assessment and planning efforts. They included thorough scrutiny of our strengths and weaknesses, analyses of our situation with respect to comparative research organizations, and identification of major thrust areas leading to core research efforts that take advantage of our special facilities and expertise. Our goal is to develop significant research and development (R&D) programs in selected important areas to which we can make significant contributions by combining our distinctive expertise and resources in the biological sciences with those in the physical, engineering, and computational sciences. Significant facilities in mouse genomics, mass spectrometry, neutron science, bioanalytical technologies, and high performance computing are critical to the success of our programs. Research and development efforts in the division are organized in six sections. These cluster into two broad areas of R&D: systems biology and technology applications. The systems biology part of the division encompasses our core biological research programs. It includes the Mammalian Genetics and Development Section, the Biochemistry and Biophysics Section, and the Computational Biosciences Section. The technology applications part of the division encompasses the Assessment Technology Section, the Environmental Technology Section, and the Toxicology and Risk Analysis Section. These sections are the stewards of the division's core competencies. The

Progress report - Health Sciences Division - 1985 January 01 - June 30

International Nuclear Information System (INIS)

1985-09-01

This progress report contains a topical summary of major research in the Health Sciences Division. Separate reports are included for each of the following branches: Dosimetric Research, Environmental Research, Radiation Biology, and Medical. Some of the main areas of interest discussed are the impact of studies on cultured human fibroblasts with abnormal carcinogen sensitivity. This includes mechanisms of DNA repair and for the initiation of cancer, contribution of such genes to overall societal cancer burden, impact on risk assessment, distribution of risk, and radiation protection, application to improved treatment of cancer, screening for abnormal carcinogen sensitivity and Roberts syndrome

Progress report 1979 July 01 to September 30, Health Sciences Division

International Nuclear Information System (INIS)

1979-12-01

In September 1979, the Biology and Health Physics Division and the Medical Division were amalgamated to form the Health Sciences Division. This is the first progress report of the new division. A new TLD reader for semi-automatic handling of individual TLD chips has been commissioned. As high range radiation detectors for spent fuel monitoring, optical photo-diodes show performance similar to that of silicon rectifiers. Studies continue on the use of water-permeable plastic membranes in tritium monitoring, particularly where it is important to distinguish between 3 H in elemental form and combined as water. The first of a series of radionuclide injection experiments was made in the sand aquifer near Perch Lake. These experiments are to develop methods for studying radionuclide transport in fractured rock. Investigations of soil and groundwater in the vicinity of waste management areas have shown that tritium is the only radionuclide present in significant quantities. Radiation damage to DNA and subsequent repair is being studied by observing both somatic and genetic effcts. Rare hereditary human diseases that present clinical or laboratory features indicative of defects in the DNA repair mechanism are being studied. Work on various metabolic models that describe retention and distribution of radionuclides in humans has continued with emphasis on tritium as HT, carbon as CO2, and compounds of the alkaline earth and actinide elements. Committed effective dose equivalent conversion factors for infants and adults have been calculated for 380 classes of compounds of radionuclide and intake routes, for 65 elements. (OT)

Progress report of Physics Division. 1 October 1979 - 30 September 1980. Acting Division Chief - Dr. J. Parry

International Nuclear Information System (INIS)

2004-01-01

The work of the Division concentrated on topics reported in the previous Progress Report with one additional project, namely, the application of ion beam techniques and laser annealing to the production of photovoltaic devices. The MOATA reactor and 3 MeV accelerator operated for Divisional projects and for other work, including collaborative projects supported by the Australian Institute of Nuclear Science and Engineering. Staff were seconded to the Reactors Department (New Reactor Study) and to universities (plasma physics and fusion program). Results obtained on four main themes (reactor calculations, neutron physics, nuclear applications and plasma physics) are reported in the following sections (author)

Instrumentation and Controls Division biennial progress report, September 1, 1976--September 1, 1978

Energy Technology Data Exchange (ETDEWEB)

Sadowski, G.S. (ed.)

1978-11-01

Progress is summarized in the following research and development areas: electronic circuits;instruments; radiation monitoring; process systems and instrumentation; thermometry; instrumentation for engineering experiments and test loops; HTGR fuel recycle development; reactor measurements and analysis; automatic control and data acquisition; electronic engineering support for research facilities; miscellaneous engineering services, studies, and developments; maintenance; and environmental science studies.

Instrumentation and Controls Division biennial progress report, September 1, 1976--September 1, 1978

International Nuclear Information System (INIS)

Sadowski, G.S.

1978-11-01

Progress is summarized in the following research and development areas: electronic circuits;instruments; radiation monitoring; process systems and instrumentation; thermometry; instrumentation for engineering experiments and test loops; HTGR fuel recycle development; reactor measurements and analysis; automatic control and data acquisition; electronic engineering support for research facilities; miscellaneous engineering services, studies, and developments; maintenance; and environmental science studies

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.

Chemical Technology Division progress report, October 1, 1989--June 30, 1991

Energy Technology Data Exchange (ETDEWEB)

1992-04-01

This progress report reviews the mission of the Chemical Technology Division (Chem Tech) and presents a summary of organizational structure, programmatic sponsors, and funding levels for the period October 1, 1988, through June 30, 1991. The report also summarizes the missions and activities of organizations within Chem Tech for the reporting period. Specific projects performed within Chem Tech`s energy research programs, waste and environmental programs, and radiochemical processing programs are highlighted. Other information regarding publications, patents, awards, and conferences organized by Chem Tech staff is also included.

Chemical Technology Division progress report, October 1, 1989--June 30, 1991

Energy Technology Data Exchange (ETDEWEB)

1992-04-01

This progress report reviews the mission of the Chemical Technology Division (Chem Tech) and presents a summary of organizational structure, programmatic sponsors, and funding levels for the period October 1, 1988, through June 30, 1991. The report also summarizes the missions and activities of organizations within Chem Tech for the reporting period. Specific projects performed within Chem Tech's energy research programs, waste and environmental programs, and radiochemical processing programs are highlighted. Other information regarding publications, patents, awards, and conferences organized by Chem Tech staff is also included.

Radiochemistry Division annual progress report: 1988

International Nuclear Information System (INIS)

1990-01-01

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 238 U and 165 Ho and fission yield of 252 Cf(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

Cell Division Synchronization

Science.gov (United States)

The report summarizes the progress in the design and construction of automatic equipment for synchronizing cell division in culture by periodic...Concurrent experiments in hypothermic synchronization of algal cell division are reported.

Radiochemistry Division annual progress report : 1991

International Nuclear Information System (INIS)

Natarajan, V.; Godbole, S.V.; Iyer, R.H.

1993-01-01

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 (Z c superconductors. A list of publications by the scientific staff of the Division is given at the end. (author). 31 figs., 49 tabs

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

International Nuclear Information System (INIS)

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

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

Applied Chemistry Division progress report for the period 1993-1995

International Nuclear Information System (INIS)

Naik, D.B.; Ramshesh, V.; Wani, B.N.

1997-01-01

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

Progress report [of] Technical Physics Division

International Nuclear Information System (INIS)

Vijendran, P.; Deshpande, R.Y.

1975-01-01

Activities of the Technical Physics Division of the Bhabha Atomic Research Centre, Bombay, over the last few years are reported. This division is engaged in developing various technologies supporting the development of nuclear technology. The various fields in which development is actively being carried out are : (i) vacuum technology, (ii) mass spectrometry, (iii) crystal technology, (iv) cryogenics, and (v) magnet technology. For surface studies, the field emission microscope and the Auger electron spectrometer and other types of spectrometers have been devised and perfected. Electromagnets of requisite strength to be used in MHD programme and NMR instruments are being fabricated. Various crystals such as NaI(Tl), Ge, Fluorides, etc. required as windows and prisms in X and gamma-ray spectroscopy, have been grown. In the cryogenics field, expansion engines required for air liquefaction plants, vacuum insulated dewars, helium gas thermometers etc. have been constructed. In addition to the above, the Division provides consultancy and training to personnel from various institutions and laboratories. Equipment and systems perfected are transferred to commercial organizations for regular production. (A.K.)

Chemical Technology Division: Progress report, January 1, 1987--June 30, 1988

Energy Technology Data Exchange (ETDEWEB)

1989-02-01

This progress report summarizes the research and development efforts conducted in the Chemical Technology Division (Chem Tech) during the period January 1, 1987, to June 30, 1988. The following major areas are covered: waste management and environmental programs, radiochemical and reactor engineering programs, basic science and technology, Nuclear Regulatory Commission programs, and administrative resources and facilities. The Administrative Summary, an appendix, presents a comprehensive listing of publications, oral presentations, awards and recognitions, and patents of Chem Tech staff members during this period. A staffing level and financial summary and lists of seminars and Chem Tech consultants for the period are also included.

Chemical Technology Division: Progress report, January 1, 1987--June 30, 1988

International Nuclear Information System (INIS)

1989-02-01

This progress report summarizes the research and development efforts conducted in the Chemical Technology Division (Chem Tech) during the period January 1, 1987, to June 30, 1988. The following major areas are covered: waste management and environmental programs, radiochemical and reactor engineering programs, basic science and technology, Nuclear Regulatory Commission programs, and administrative resources and facilities. The Administrative Summary, an appendix, presents a comprehensive listing of publications, oral presentations, awards and recognitions, and patents of Chem Tech staff members during this period. A staffing level and financial summary and lists of seminars and Chem Tech consultants for the period are also included

Progress report - physical sciences TASCC division 1990 July 01 - December 31

International Nuclear Information System (INIS)

1991-05-01

A completely new administrative structure of AECL Research was implemented on 1990 July 1. All of the basic physics programs, together with accelerator physics, radiation applications and most of the chemistry programs of AECL, have been placed in a new organizational unit called Physical Sciences. This unit also includes the management of the National Fusion Program. The research programs of Physical Sciences are grouped into three divisions: Chemistry, Physics and TASCC. Progress in each division will henceforth be reported on a twice-yearly basis. This report is the first of the new series to be issued by the TASCC Division. During the period covered by this report, the operation of the superconducting cyclotron has matured considerably, with over 30 accelerated ion beams more-or-less routinely available for a wide variety of nuclear physics experiments. The TASCC team, together with all the engineers, trades-people and other staff members who contributed to the design, constructed and commissioning of the Tandem Accelerator Superconducting Cyclotron facility, are to be heartily congratulated on bringing it to its present highly successful state in an unusually short period of time. In conjunction with our many outside collaborators, we are now engaged on exciting experiments in several areas of nuclear physics research, as reported in the following pages. We are well on the way to the establishment of a truly National Centre for Nuclear Physics research in Canada

Fusion Energy Division progress report, 1 January 1990--31 December 1991

International Nuclear Information System (INIS)

Sheffield, J.; Baker, C.C.; Saltmarsh, M.J.

1994-03-01

The Fusion Program of the Oak Ridge National Laboratory (ORNL), a major part of the national fusion program, encompasses nearly all areas of magnetic fusion research. The program is directed toward the development of fusion as an economical and environmentally attractive energy source for the future. The program involves staff from ORNL, Martin Marietta Energy systems, Inc., private industry, the academic community, and other fusion laboratories, in the US and abroad. Achievements resulting from this collaboration are documented in this report, which is issued as the progress report of the ORNL Fusion Energy Division; it also contains information from components for the Fusion Program that are external to the division (about 15% of the program effort). The areas addressed by the Fusion Program include the following: experimental and theoretical research on magnetic confinement concepts; engineering and physics of existing and planned devices, including remote handling; development and testing of diagnostic tools and techniques in support of experiments; assembly and distribution to the fusion community of databases on atomic physics and radiation effects; development and testing of technologies for heating and fueling fusion plasmas; development and testing of superconducting magnets for containing fusion plasmas; development and testing of materials for fusion devices; and exploration of opportunities to apply the unique skills, technology, and techniques developed in the course of this work to other areas (about 15% of the Division's activities). Highlights from program activities during 1990 and 1991 are presented

Progress report - physical sciences - physics division 1990 July 01 - December 31

International Nuclear Information System (INIS)

1991-05-01

A completely new administrative structure of AECL Research was implemented on 1990 July 1. All of the basic physics programs, together with accelerator physics, radiation applications and most of the chemistry programs of AECL, have been placed in a new organizational unit called Physical Sciences. This unit also includes the management of the National Fusion Program. The research programs of Physical Sciences are grouped into three divisions: Chemistry, Physics and TASCC. Progress in each division will henceforth be reported on a twice-yearly basis. This report is the first of the new series to be issued by the Physics Division. Of special note within the period covered by this report was the successful acceleration of over 75 mA of protons to 600 keV in RFQ1 making it the highest current RFQ in the world. Our electron accelerator expertise has been recognized by the award of one of the R and D 100 awards for the IMPELA (10 MeV 50 kW) machine. Considerable activity was associated with bringing the new dual beam neutron spectrometer DUALSPEC to completion. This instrument has been jointly funded by AECL and NSERC through McMaster University and will be a central component of the national neutron scattering facility at NRU in the 1990's. A major effort was made with the writing of a Project Definition Document for installation of a cold neutron source at the most opportune time

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

International Nuclear Information System (INIS)

Lyon, W.S.

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

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.

Biology Division progress report for period of October 1, 1988--September 30, 1989

Energy Technology Data Exchange (ETDEWEB)

1990-02-01

The Biology Division of the Oak Ridge National Laboratory is one component of the Department of Energy's intramural program in life sciences. With respect to experimental biology, the congressionally mandated mission of this Office is to study adverse health effects of energy production and utilization. Within this stated broad mission, common themes among the research programs of the Biology Division are interactions of animals, cells, and molecules with their respective environments. Investigations focus on genetic and somatic effects of radiation and chemicals. Goals include identification and quantification of these effects, elucidation of pathways by which the effects are expressed, assessment of risks associated with radiation and chemical exposures, and establishment of strategies for extrapolation of risk data from animals to humans. Concurrent basic studies in genetics, biochemistry, molecular biology, and cell biology illuminate normal life processes as prerequisites to comprehending mutagenic and carcinogenic effects of environmental agents. This Progress Report is intended to provide both broad perspectives of the Division's research programs and synopses of recent achievements. Readers are invited to contact individual principal investigators for more detailed information, including reprints of publications. 120 refs.

Radiochemistry Division annual progress report 1989

International Nuclear Information System (INIS)

1990-01-01

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

Chemical Technology Division progress report for the period April 1, 1985 to December 31, 1986

International Nuclear Information System (INIS)

1987-08-01

This progress report summarizes the research and development efforts conducted in the Chemical Technology Division (Chem Tech) during the period April 1, 1985, through December 31, 1986. The following major areas are covered in the discussion: nuclear and chemical waste management, environmental control technology, basic science and technology, biotechnology research, transuranium-element processing, Nuclear Regulatory Commission programs, radioactive materials production, computer/engineering applications, fission energy, environmental cleanup projects, and various other work activities. As an appendix, the Administrative Summary presents a comprehensive compilation of publications, oral presentations, awards and recognitions, and patents of Chem Tech staff members during this report period. An organization chart, a staffing level and financial summary, and lists of seminars and Chem Tech consultants for the period are also included to provide additional information. 78 figs., 40 tabs

Chemical Technology Division progress report for the period April 1, 1985 to December 31, 1986

Energy Technology Data Exchange (ETDEWEB)

1987-08-01

This progress report summarizes the research and development efforts conducted in the Chemical Technology Division (Chem Tech) during the period April 1, 1985, through December 31, 1986. The following major areas are covered in the discussion: nuclear and chemical waste management, environmental control technology, basic science and technology, biotechnology research, transuranium-element processing, Nuclear Regulatory Commission programs, radioactive materials production, computer/engineering applications, fission energy, environmental cleanup projects, and various other work activities. As an appendix, the Administrative Summary presents a comprehensive compilation of publications, oral presentations, awards and recognitions, and patents of Chem Tech staff members during this report period. An organization chart, a staffing level and financial summary, and lists of seminars and Chem Tech consultants for the period are also included to provide additional information. 78 figs., 40 tabs.

Environment and Medical Sciences Division Progress Report

International Nuclear Information System (INIS)

Hainge, W.M.

1980-06-01

The 1979 annual progress report of the UKAEA Environmental and Medical Sciences Division covers both radiological and non-nuclear research programmes in the environmental and toxicological fields. The specific topics were 1) 'atmospheric pollution' which included the analysis of atmospheric trace gases by gas chromatography/mass spectrometry, the life cycle of atmospheric sulphur compounds, photochemical pollution, studies on stratospheric reactions, stratospheric ozone and the effects of pollutants, upper air sampling and monitoring gaseous atmospheric pollutants with passive samplers; 2) miscellaneous 'environmental safety projects'; 3) 'radiation physics' projects concerning a) radioactive fallout, b) studies of stable trace elements in the atmospheric environment and studies of radioactivity in the environment, c) various aspects of dosimetry research including radiation biophysics, d) personnel dosimetry, e) applied radiation spectrometry and f) data systems; 5) 'aerosol and metabolic studies' including whole body counting studies; 6) 'inhalation toxicology and radionuclide analysis' studies including actinide inhalation, cytotoxicity and fibrogenicity of non-radioactive dusts, asbestos and glass fibre research, a Qauntimet 720 image analysis service and radionuclide analysis in biological materials; and 7) 'analytical services' used in relation to 'environmental safety and chemical analysis' projects. (U.K.)

Radiochemistry Division: Annual progress report for 1981

International Nuclear Information System (INIS)

Jayadevan, N.C.; Manohar, S.B.

1983-01-01

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)O 2 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 SrSO 4 , 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 229 Th and 252 Cf, and (9) fabrication of a neutron well coincidence counter. (M.G.B.)

Applied Physics Division 1998 Progress Report

International Nuclear Information System (INIS)

Cecchini, M.; Crescentini, L; Ghezzi, L.; Kent, C.; Bottomei, M.

2001-01-01

This report outlines the 1998 research activities carried out by the Applied Physics Division of the Innovation Department of ENEA (Italian Agency for New Technologies, Energy and Environment). The fields addressed and discussed include: optical and electro-optical technologies (chaps. 1 and 2); accelerator technologies (chap. 3); diagnostic systems for science and engineering (chaps. 4 and 5); theory, modelling and computational methods (chaps. 6 and 7). The aim of the Applied Physics Division is to develop technologies and systems that can be directly applied by internal (ENEA) and external users in research (high-resolution spectroscopy, laser-generated soft-x-ray sources), production processes (laser material photoproduction, structural analysis), social, cultural and environmental sciences (laser remote sensing, modelling of ecosystems and population dynamics) and medicine (particle accelerator for radiotherapy). Most of the work in 1998 was performed by the division's laboratories at the Frascati, Casaccia and Bologna Research Centres of ENEA; some was done elsewhere in collaboration with other ENEA units, external laboratories and industries. A good share of the activities was carried out for international projects; in particular, the IV European Union Framework Program

Applied Physics Division 1998 Progress Report

Energy Technology Data Exchange (ETDEWEB)

Cecchini, M.; Crescentini, L; Ghezzi, L.; Kent, C.; Bottomei, M. [ENEA, Centro Ricerche Frascati, Frascati, RM (Italy). Applied physics Division

1999-07-01

This report outlines the 1998 research activities carried out by the Applied Physics Division of the Innovation Department of ENEA (Italian Agency for New Technologies, Energy and Environment). The fields addressed and discussed include: optical and electro-optical technologies (chaps. 1 and 2); accelerator technologies (chap. 3); diagnostic systems for science and engineering (chaps. 4 and 5); theory, modelling and computational methods (chaps. 6 and 7). The aim of the Applied Physics Division is to develop technologies and systems that can be directly applied by internal (ENEA) and external users in research (high-resolution spectroscopy, laser-generated soft-x-ray sources), production processes (laser material photoproduction, structural analysis), social, cultural and environmental sciences (laser remote sensing, modelling of ecosystems and population dynamics) and medicine (particle accelerator for radiotherapy). Most of the work in 1998 was performed by the division's laboratories at the Frascati, Casaccia and Bologna Research Centres of ENEA; some was done elsewhere in collaboration with other ENEA units, external laboratories and industries. A good share of the activities was carried out for international projects; in particular, the IV European Union Framework Program.

75 FR 77664 - Honeywell International, Inc., Automation and Control Solutions Division, Including On-Site...

Science.gov (United States)

2010-12-13

..., Inc., Automation and Control Solutions Division, Including On-Site Leased Workers From Manpower... Solutions Division. The Department has determined that these workers were sufficiently under the control of Honeywell International, Inc., Automation and Control Solutions Division to be considered leased workers...

76 FR 81986 - Honeywell International, Inc., Automation and Control Solutions Division, Including On-Site...

Science.gov (United States)

2011-12-29

..., Inc., Automation and Control Solutions Division, Including On-Site Leased Workers From Manpower...., Automation and Control Solutions Division. The Department has determined that these workers were sufficiently...., Automation and Control Solutions Division, including on-site leased workers from Manpower, Spherion...

Physics Division progress report for period ending September 30, 1988

Energy Technology Data Exchange (ETDEWEB)

Livingston, A.B. (ed.)

1989-03-01

This report covers the research and development activities of the Physics Division for the 1988 fiscal year, beginning October 1, 1987, and ending September 30, 1988. The activities of this Division are concentrated in the areas of experimental nuclear physics, experimental atomic physics, and theoretical nuclear and atomic physics. Operation of the Holifield Heavy Ion Research Facility as a national user facility continues to represent the single largest activity within the Division. This year saw the completion of the acceleration tube upgrade of the 25-MV tandem electrostatic accelerator and the achievement of record terminal potentials, operation for an experiment with 25 million volts on terminal, and successful tests with beam at 25.5 MV. The experimental nuclear physics program continues to be dominated by research utilizing heavy ions. These activities, while continuing to center largely on the Holifield Facility, have seen significant growth in the use of facilities that provide intermediate energies and especially ultrarelativistic beams. The UNISOR program, since its inception, has been intimately associated with the Division and, most particularly, with the Holifield Facility. In addition to the Holifield Facility, the Division operates two smaller facilities, the EN Tandem and the ECR Ion Source Facility, as ''User Resources.'' The efforts in theoretical physics, covering both nuclear and atomic physics, are presented. In addition to research with multicharged heavy ions from the ECR source, the effort on atomic physics in support of the controlled fusion program includes a plasma diagnostics development program. The concentration of this program on optical and laser technology is marked by the change in designation to the Laser and Electro-Optics Lab. A small, continuing effort in elementary particle physics, carried out in collaboration with the University of Tennessee, is reported.

Physics Division progress report for period ending September 30, 1988

International Nuclear Information System (INIS)

Livingston, A.B.

1989-03-01

This report covers the research and development activities of the Physics Division for the 1988 fiscal year, beginning October 1, 1987, and ending September 30, 1988. The activities of this Division are concentrated in the areas of experimental nuclear physics, experimental atomic physics, and theoretical nuclear and atomic physics. Operation of the Holifield Heavy Ion Research Facility as a national user facility continues to represent the single largest activity within the Division. This year saw the completion of the acceleration tube upgrade of the 25-MV tandem electrostatic accelerator and the achievement of record terminal potentials, operation for an experiment with 25 million volts on terminal, and successful tests with beam at 25.5 MV. The experimental nuclear physics program continues to be dominated by research utilizing heavy ions. These activities, while continuing to center largely on the Holifield Facility, have seen significant growth in the use of facilities that provide intermediate energies and especially ultrarelativistic beams. The UNISOR program, since its inception, has been intimately associated with the Division and, most particularly, with the Holifield Facility. In addition to the Holifield Facility, the Division operates two smaller facilities, the EN Tandem and the ECR Ion Source Facility, as ''User Resources.'' The efforts in theoretical physics, covering both nuclear and atomic physics, are presented. In addition to research with multicharged heavy ions from the ECR source, the effort on atomic physics in support of the controlled fusion program includes a plasma diagnostics development program. The concentration of this program on optical and laser technology is marked by the change in designation to the Laser and Electro-Optics Lab. A small, continuing effort in elementary particle physics, carried out in collaboration with the University of Tennessee, is reported

Environmental Sciences Division annual progress report for period ending September 30, 1990

International Nuclear Information System (INIS)

1991-04-01

The Environmental Sciences Division (ESD) of Oak Ridge National Laboratory (ORNL) conducts research on the environmental aspects of existing and emerging energy systems and applies this information to ensure that technology development and energy use are consistent with national environmental health and safety goals. Offering an interdisciplinary resource of staff and facilities to address complex environmental problems, the division is currently providing technical leadership for major environmental issues of national concern: (1) acidic deposition and related environmental effects, (2) effects of increasing concentrations of atmospheric CO 2 and the resulting climatic changes to ecosystems and natural and physical resources, (3) hazardous chemical and radioactive waste disposal and remediation research and development, and (4) development of commercial biomass energy production systems. This progress report outlines ESD's accomplishments in these and other areas in FY 1990. Individual reports are processed separately for the data bases in the following areas: ecosystem studies; environmental analyses; environmental toxicology; geosciences; technical and administrative support; biofuels feedstock development program; carbon dioxide information analysis and research program; and environmental waste program

Environmental Sciences Division annual progress report for period ending September 30, 1990

Energy Technology Data Exchange (ETDEWEB)

1991-04-01

The Environmental Sciences Division (ESD) of Oak Ridge National Laboratory (ORNL) conducts research on the environmental aspects of existing and emerging energy systems and applies this information to ensure that technology development and energy use are consistent with national environmental health and safety goals. Offering an interdisciplinary resource of staff and facilities to address complex environmental problems, the division is currently providing technical leadership for major environmental issues of national concern: (1) acidic deposition and related environmental effects, (2) effects of increasing concentrations of atmospheric CO{sub 2} and the resulting climatic changes to ecosystems and natural and physical resources, (3) hazardous chemical and radioactive waste disposal and remediation research and development, and (4) development of commercial biomass energy production systems. This progress report outlines ESD's accomplishments in these and other areas in FY 1990. Individual reports are processed separately for the data bases in the following areas: ecosystem studies; environmental analyses; environmental toxicology; geosciences; technical and administrative support; biofuels feedstock development program; carbon dioxide information analysis and research program; and environmental waste program.

Technology Development, Evaluation, and Application (TDEA) FY 2001 Progress Report Environment, Safety, and Health (ESH) Division

Energy Technology Data Exchange (ETDEWEB)

L.G. Hoffman; K. Alvar; T. Buhl; E. Foltyn; W. Hansen; B. Erdal; P. Fresquez; D. Lee; B. Reinert

2002-05-01

This progress report presents the results of 11 projects funded ($500K) in FY01 by the Technology Development, Evaluation, and Application (TDEA) Committee of the Environment, Safety, and Health Division (ESH). Five projects fit into the Health Physics discipline, 5 projects are environmental science and one is industrial hygiene/safety. As a result of their TDEA-funded projects, investigators have published sixteen papers in professional journals, proceedings, or Los Alamos reports and presented their work at professional meetings. Supplement funds and in-kind contributions, such as staff time, instrument use, and workspace, were also provided to TDEA-funded projects by organizations external to ESH Divisions.

Technology Development, Evaluation, and Application (TDEA) FY 1999 Progress Report, Environment, Safety, and Health (ESH) Division

International Nuclear Information System (INIS)

Hoffman, Larry G.

2000-01-01

This progress report presents the results of 10 projects funded ($500K) in FY99 by the Technology Development, Evaluation, and Application (TDEA) Committee of the Environment, Safety, and Health Division. Five are new projects for this year; seven projects have been completed in their third and final TDEA-funded year. As a result of their TDEA-funded projects, investigators have published thirty-four papers in professional journals, proceedings, or Los Alamos reports and presented their work at professional meetings. Supplemental funds and in-kind contributions, such as staff time, instrument use, and work space, were also provided to TDEA-funded projects by organizations external to ESH Division

Technology Development, Evaluation, and Application (TDEA) FY 1999 Progress Report, Environment, Safety, and Health (ESH) Division

Energy Technology Data Exchange (ETDEWEB)

Larry G. Hoffman

2000-12-01

This progress report presents the results of 10 projects funded ($500K) in FY99 by the Technology Development, Evaluation, and Application (TDEA) Committee of the Environment, Safety, and Health Division. Five are new projects for this year; seven projects have been completed in their third and final TDEA-funded year. As a result of their TDEA-funded projects, investigators have published thirty-four papers in professional journals, proceedings, or Los Alamos reports and presented their work at professional meetings. Supplemental funds and in-kind contributions, such as staff time, instrument use, and work space, were also provided to TDEA-funded projects by organizations external to ESH Division.

Nuclear Physics division progress report

International Nuclear Information System (INIS)

Lees, E.W.; Longworth, G.; Scofield, C.J.

1981-07-01

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.)

Radiochemistry Division annual progress report for 1973

International Nuclear Information System (INIS)

Iyer, R.H.; Natarajan, P.R.

1975-01-01

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 238 Pu, 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 PuF 3 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.)

Cell division control by the Chromosomal Passenger Complex

Energy Technology Data Exchange (ETDEWEB)

Waal, Maike S. van der; Hengeveld, Rutger C.C.; Horst, Armando van der; Lens, Susanne M.A., E-mail: s.m.a.lens@umcutrecht.nl

2012-07-15

The Chromosomal Passenger Complex (CPC) consisting of Aurora B kinase, INCENP, Survivin and Borealin, is essential for genomic stability by controlling multiple processes during both nuclear and cytoplasmic division. In mitosis it ensures accurate segregation of the duplicated chromosomes by regulating the mitotic checkpoint, destabilizing incorrectly attached spindle microtubules and by promoting the axial shortening of chromosomal arms in anaphase. During cytokinesis the CPC most likely prevents chromosome damage by imposing an abscission delay when a chromosome bridge connects the two daughter cells. Moreover, by controlling proper cytoplasmic division, the CPC averts tetraploidization. This review describes recent insights on how the CPC is capable of conducting its various functions in the dividing cell to ensure chromosomal stability.

Theoretical Division progress report. [October 1976-January 1979

Energy Technology Data Exchange (ETDEWEB)

Cooper, N.G. (comp.)

1979-04-01

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.

Progress report, Health Sciences Division, 1 October to 31 December 1979

International Nuclear Information System (INIS)

1980-02-01

This is the second quarterly progress report of the Health Sciences Division. Developments in health physics include construction of a simple monitor for measurement of tritium concentration at or above the maximum permissible level and measurements on the behaviour of Geiger counters at high temperature for monitoring activity in reactor cooling circuits. Environmental Research Branch continues to monitor groundwater in the vicinity of the glass blocks containing fission products. Work in radiation biology deals with the effects of radiation on a variety of living organisms. Emphasis continued on the study of damage to DNA and its repair. Research into certain human diseases which are believed to be caused by a deficient DNA repair mechanism is also summarized. (OT)

Fusion Energy Division: Annual progress report, period ending December 31, 1987

Energy Technology Data Exchange (ETDEWEB)

Morgan, O.B. Jr.; Berry, L.A.; Sheffield, J.

1988-11-01

The Fusion Program of Oak Ridge National Laboratory (ORNL), a major part of the national fusion program, carries out research in nearly all areas of magnetic fusion. Collaboration among staff from ORNL, Martin Marietta Energy Systems, Inc., private industry, the academic community, and other fusion laboratories, in the United States and abroad, is directed toward the development of fusion as an energy source. This report documents the program's achievements during 1987. Issued as the annual progress report of the ORNL Fusion Energy Division, it also contains information from components of the Fusion Program that are external to the division (about 15% of the program effort). The areas addressed by the Fusion Program include the following: experimental and theoretical research on magnetic confinement concepts, engineering and physics of existing and planned devices, development and testing of diagnostic tools and techniques in support of experiments, assembly and distribution to the fusion community of databases on atomic physics and radiation effects, development and testing of technologies for heating and fueling fusion plasmas, development and testing of superconducting magnets for containing fusion plasmas, and development and testing of materials for fusion devices. Highlights from program activities are included in this report. 126 figs., 15 tabs.

Fusion Energy Division: Annual progress report, period ending December 31, 1987

International Nuclear Information System (INIS)

Morgan, O.B. Jr.; Berry, L.A.; Sheffield, J.

1988-11-01

The Fusion Program of Oak Ridge National Laboratory (ORNL), a major part of the national fusion program, carries out research in nearly all areas of magnetic fusion. Collaboration among staff from ORNL, Martin Marietta Energy Systems, Inc., private industry, the academic community, and other fusion laboratories, in the United States and abroad, is directed toward the development of fusion as an energy source. This report documents the program's achievements during 1987. Issued as the annual progress report of the ORNL Fusion Energy Division, it also contains information from components of the Fusion Program that are external to the division (about 15% of the program effort). The areas addressed by the Fusion Program include the following: experimental and theoretical research on magnetic confinement concepts, engineering and physics of existing and planned devices, development and testing of diagnostic tools and techniques in support of experiments, assembly and distribution to the fusion community of databases on atomic physics and radiation effects, development and testing of technologies for heating and fueling fusion plasmas, development and testing of superconducting magnets for containing fusion plasmas, and development and testing of materials for fusion devices. Highlights from program activities are included in this report. 126 figs., 15 tabs

Progress report for 1978-87 of the Food Technology and Enzyme Engineering Division

International Nuclear Information System (INIS)

Adhikari, H.R.; Ninjoor, V.; Satyanarayan, V.

1988-01-01

The salient features of the research and development (R and D) activities of the Food Technology and Enzyme Engineering Division of the Bhabha Atomic Research Centre, Bombay, during the decade 1978-1987 are summarized. The Division was a part of the erstwhile Biochemistry and Food Technology which was bifurcated in 1985. The main thrust of the Division's R and D work is directed towards the development of appropriate technologies for radiation preservation of agricultural produce in natural form for prolonged periods without any perceptible change in quality attributes. The suitable parameters have been evolved to apply radiation technology for: (1) arresting sprouting losses in turbers and bulbs, (2) controlling infestation of cereals, spices and ready to eat food items, by insects, microbial pests and pathogens and (3) controlling spoilage of sea foods, fruits and vegetables. It is remarkable to note that the data collected during wholesomeness and toxicological studies of various irradiated food products have been used by the Joint Expert Committee on Food Irradiation of WHO/IAEA/FAO to accord unconditional health and safety clearance to irradiation process using upto 10 KGy radiation doses. The products treated with gamma radiation within this limit do not require toxicological evaluation. The technique for poly-valent radio-vaccine infective diseases in farm animals have been standardized and a vaccine to prevent Salmonella infection in poultry is undergoing field trials in farms. The other activities of the Division are in the fields of enzyme technology, photosynthetic process, and toxicity and genotoxicity of food ingredients and additives. Lists of staff-members of the Division and their publications, their participation in various symposia, seminars, conferences etc. are appended. (M.G.B.)

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)

Spectroscopy Division progress report (July 1993 - June 1995)

International Nuclear Information System (INIS)

Venkitachalam, T.V.

1995-01-01

This report gives an overview of the activities of the Spectroscopy Division for the period from July 1993 to June 1995 which can be broadly categorized as applied and basic research. In the applied field the thrust is in the development of analytical methods for the spectrometric determination of impurities in nuclear grade and allied materials. The report is arranged in four sections. The progress in analytical instrumentation, the fabrication of optical components and the development of new techniques in thin film coatings as also the indigenisation of synchrotron beam line instrumentation are all covered in section A. Sensitive techniques such as laser enhanced ionisation (LEI) and resonance ionization mass spectrometry (RIMS) have been developed. The spectroscopy of atoms and radicals generated by photodissociation of molecules of interest using pump and probe technique were also developed. Multiphoton excitation of atoms and molecules have resulted in identification of several new electronic levels. Raman spectra of many molecules were investigated. Some of these studies are presented in section B. The inter and intra divisional service activities are reported in section C. Section D contains miscellaneous activities. (author). refs., figs., tabs

Spectroscopy Division progress report (July 1995 - December 1997)

International Nuclear Information System (INIS)

Venkitachalam, T.V.

1998-07-01

This report gives an overview of the activities of the Spectroscopy Division for the period from July 1995 to December 1997 which can be broadly categorized as applied and basic research. In the applied field the thrust is in the development of analytical methods for the spectrometric determination of impurities in nuclear grade and allied materials. The report is arranged in four sections. The progress in analytical instrumentation, the fabrication of optical components and the development of new techniques in thin film coatings as also the indigenisation of synchrotron beam line instrumentation are all covered in Section A. Sensitive techniques such as laser enhanced ionisation (LEI) and resonance ionization mass spectrometry (RIMS) have been developed. The spectroscopy of atoms and radicals generated by photodissociation of molecules of interest using pump and probe technique were also developed. Multiphoton excitation of atoms and molecules have resulted in identification of several new electronic levels. Raman spectra of many molecules were investigated. Some of these studies are presented in Section B. The inter and intra Divisional service activities are reported in Section C. Section D contains papers published in journals and conferences and some other miscellaneous activities. (author)

Spectroscopy Division progress report (July 1993 - June 1995)

Energy Technology Data Exchange (ETDEWEB)

Venkitachalam, T V [ed.; Bhabha Atomic Research Centre, Bombay (India). Spectroscopy Division

1996-12-31

This report gives an overview of the activities of the Spectroscopy Division for the period from July 1993 to June 1995 which can be broadly categorized as applied and basic research. In the applied field the thrust is in the development of analytical methods for the spectrometric determination of impurities in nuclear grade and allied materials. The report is arranged in four sections. The progress in analytical instrumentation, the fabrication of optical components and the development of new techniques in thin film coatings as also the indigenisation of synchrotron beam line instrumentation are all covered in section A. Sensitive techniques such as laser enhanced ionisation (LEI) and resonance ionization mass spectrometry (RIMS) have been developed. The spectroscopy of atoms and radicals generated by photodissociation of molecules of interest using pump and probe technique were also developed. Multiphoton excitation of atoms and molecules have resulted in identification of several new electronic levels. Raman spectra of many molecules were investigated. Some of these studies are presented in section B. The inter and intra divisional service activities are reported in section C. Section D contains miscellaneous activities. (author). refs., figs., tabs.

Chemistry Division. Quarterly progress report for period ending June 30, 1949

Energy Technology Data Exchange (ETDEWEB)

1949-09-14

Progress reports are presented for the following tasks: (1) nuclear and chemical properties of heavy elements (solution chemistry, phase rule studies); (2) nuclear and chemical properties of elements in the fission product region; (3) general nuclear chemistry; (4) radio-organic chemistry; (5) chemistry of separations processes; (6) physical chemistry and chemical physics; (7) radiation chemistry; (8) physical measurements and instrumentation; and (9) analytical chemistry. The program of the chemistry division is divided into two efforts of approximately equal weight with respect to number of personnel, chemical research, and analytical service for the Laboratory. The various research problems fall into the following classifications: (1) chemical separation processes for isolation and recovery of fissionable material, production of radioisotopes, and military applications; (2) reactor development; and (3) fundamental research.

Health and Safety Research Division progress report for the period October 1, 1991--March 31, 1993

International Nuclear Information System (INIS)

Berven, B.A.

1993-09-01

This is a progress report from the Health and Safety Research Division of Oak Ridge National Laboratory. Information is presented in the following sections: Assessment Technology, Biological and Radiation Physics, Chemical Physics, Biomedical and Environmental Information Analysis, Risk Analysis, Center for Risk Management, Associate Laboratories for Excellence in Radiation Technology (ALERT), and Contributions to National and Lead Laboratory Programs and Assignments--Environmental Restoration

Health and Safety Research Division progress report for the period October 1, 1991--March 31, 1993

Energy Technology Data Exchange (ETDEWEB)

Berven, B.A.

1993-09-01

This is a progress report from the Health and Safety Research Division of Oak Ridge National Laboratory. Information is presented in the following sections: Assessment Technology, Biological and Radiation Physics, Chemical Physics, Biomedical and Environmental Information Analysis, Risk Analysis, Center for Risk Management, Associate Laboratories for Excellence in Radiation Technology (ALERT), and Contributions to National and Lead Laboratory Programs and Assignments--Environmental Restoration.

Physics Division progress report for period ending September 30, 1987

International Nuclear Information System (INIS)

Livingston, A.B.

1988-03-01

The activities of this Division are concentrated in the areas of experimental nuclear physics, experimental atomic physics, and theoretical nuclear and atomic physics. A major activity within the Division is operation of the Holifield Heavy Ion Research Facility as a national user facility. Highlights for this year, which include a record number of beam hours provided for research, are summarized. The experimental nuclear physics program continues to be dominated by research utilizing heavy ions. These activities, while continuing to center largely on the Holifield Facility, have seen growth in the use of facilities that provide intermediate energies (GANIL) and ultrarelativistic beams (CERN). The UNISOR program, since its inception, has been intimately associated with the Division and, most particularly, with the Holifield Facility. The experimental nuclear structure research of this consortium is included. In addition to the Holifield Facility, the Division also operates two smaller facilities, the EN Tandem and the ECR Ion Source Facility, as /open quotes/User Resources/close quotes/. The tandem continues a long history of supporting research in accelerator-based atomic physics. During this past year, new beam lines have been added to the ECR ion source to create user opportunities for atomic physics experiments with this unique device. These two facilities and the experimental programs in atomic physics are discussed. The efforts in theoretical physics, covering both nuclear and atomic physics, are presented. Also included is the theory effort in support of the UNISOR structure program. In addition to research with multicharged heavy ions from the ECR source, the effort on atomic physics in support of the controlled fusion program includes a plasma diagnostics development program and operation of an atomic physics data center. The nuclear physics program also operates a compilation and evaluation effort; this work is also described

Physics Division progress report for period ending September 30, 1987

Energy Technology Data Exchange (ETDEWEB)

Livingston, A.B. (ed.)

1988-03-01

The activities of this Division are concentrated in the areas of experimental nuclear physics, experimental atomic physics, and theoretical nuclear and atomic physics. A major activity within the Division is operation of the Holifield Heavy Ion Research Facility as a national user facility. Highlights for this year, which include a record number of beam hours provided for research, are summarized. The experimental nuclear physics program continues to be dominated by research utilizing heavy ions. These activities, while continuing to center largely on the Holifield Facility, have seen growth in the use of facilities that provide intermediate energies (GANIL) and ultrarelativistic beams (CERN). The UNISOR program, since its inception, has been intimately associated with the Division and, most particularly, with the Holifield Facility. The experimental nuclear structure research of this consortium is included. In addition to the Holifield Facility, the Division also operates two smaller facilities, the EN Tandem and the ECR Ion Source Facility, as /open quotes/User Resources/close quotes/. The tandem continues a long history of supporting research in accelerator-based atomic physics. During this past year, new beam lines have been added to the ECR ion source to create user opportunities for atomic physics experiments with this unique device. These two facilities and the experimental programs in atomic physics are discussed. The efforts in theoretical physics, covering both nuclear and atomic physics, are presented. Also included is the theory effort in support of the UNISOR structure program. In addition to research with multicharged heavy ions from the ECR source, the effort on atomic physics in support of the controlled fusion program includes a plasma diagnostics development program and operation of an atomic physics data center. The nuclear physics program also operates a compilation and evaluation effort; this work is also described.

Health and Safety Research Division: Progress report, October 1, 1985-March 31, 1987

International Nuclear Information System (INIS)

Walsh, P.J.

1987-09-01

This report summarizes the progress in our programs for the period October 1, 1985, through March 31, 1987. The division's presentations and publications represented important contributions on the forefronts of many fields. Eleven invention disclosures were filed, two patent applications submitted, and one patent issued. The company's transfers new technologies to the private sector more efficiently than in the past. The division's responsibilities to DOE under the Uranium Mill Tailings Remedial Action (UMTRA) program includes inclusion recommendations for 3100 properties. The nuclear medicine program developed new radiopharmaceuticals and radionuclide generators through clinical trials with some of our medical cooperatives. Two major collaborative indoor air quality studies and a large epidemiological study of drinking water quality and human health were completed. ORNL's first scanning tunneling microscope (STM) has achieved single atom resolution and has produced some of the world's best images of single atoms on the surface of a silicon crystal. The Biological and Radiation Physics Section, designed and constructed a soft x-ray spectrometer which has exhibited a measuring efficiency that is 10,000 times higher than other equipment. 1164 refs

Chemical Technology Division progress report for the period July 1, 1988 to September 30, 1989

Energy Technology Data Exchange (ETDEWEB)

1990-03-01

This progress report summarizes the research and development efforts conducted in the Chemical Technology Division (Chem Tech) during the period July 1, 1988, through September 30, 1989. The following major areas are covered: waste management and environmental programs, the Waste Management Technology Center, radiochemical and isotope programs, basic science and technology, Nuclear Regulatory Commission and Electric Power Research Institute severe accident research programs, the Office of Safety and Operational Readiness, and administrative resources and facilities.

Spectroscopy Division progress report for Jan 1983 - Dec 1984

International Nuclear Information System (INIS)

Dixit, R.M.

1985-01-01

The Research and Development (R and D) activities of the Spectroscopy Division of the Bhabha Atomic Research Centre, Bombay, during the period from January 1983 to December 1984 are reported. The main thrust of the activities of the Division is directed towards meeting the spectrochemical analytical requirements of the nuclear energy programmes and the related R and D projects of the Department of Atomic Energy. These activities are described in the form of summaries grouped under the headings:(1) analyses by optical emission, X-ray fluorescence, X-ray excited optical luminescence and other techniques, (2) atomic, molecular and solid state spectroscopy, (3) optics and thin films, and (4) electronic instrumentation. Two feature articles which are included in the report bring out the salient features of X-ray absorption fine structure spectroscopy (EXFAS) and laser spectroscopic techniques for trace analysis and describe the Division's efforts in setting up facilities to carry out work in these emerging fields. Other activities of the Division are teaching trainees and guiding research leading to M.Sc. and Ph.D. degrees. A list of papers published in journals and papers presented at conferences, symposia etc. by the staff-members of the Division is given. A divisional staff chart is also given. (M.G.B.)

Developmental control of cell division

NARCIS (Netherlands)

Boxem, M. (Mike)

2002-01-01

During development of multicellular organisms, cell divisions need to be coordinated with the developmental program of the entire organism. Although the mechanisms that drive cells through the division cycle are well understood, very little is known about the pathways that link extracellular signals

Progress report 1979

International Nuclear Information System (INIS)

1980-12-01

This progress report deals with technical and research work done at the AAEC Research Establishment in the twelve month period ending September 30, 1979. Work done in the following research divisions is reported: Applied Maths and Computing, Chemical Technology, Engineering Research, Environmental Science, Instrumentation and Control, Isotope, Materials and Physics

Health and Safety Research Division: Progress report, October 1, 1985-March 31, 1987

Energy Technology Data Exchange (ETDEWEB)

Walsh, P.J.

1987-09-01

This report summarizes the progress in our programs for the period October 1, 1985, through March 31, 1987. The division's presentations and publications represented important contributions on the forefronts of many fields. Eleven invention disclosures were filed, two patent applications submitted, and one patent issued. The company's transfers new technologies to the private sector more efficiently than in the past. The division's responsibilities to DOE under the Uranium Mill Tailings Remedial Action (UMTRA) program includes inclusion recommendations for 3100 properties. The nuclear medicine program developed new radiopharmaceuticals and radionuclide generators through clinical trials with some of our medical cooperatives. Two major collaborative indoor air quality studies and a large epidemiological study of drinking water quality and human health were completed. ORNL's first scanning tunneling microscope (STM) has achieved single atom resolution and has produced some of the world's best images of single atoms on the surface of a silicon crystal. The Biological and Radiation Physics Section, designed and constructed a soft x-ray spectrometer which has exhibited a measuring efficiency that is 10,000 times higher than other equipment. 1164 refs.

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

International Nuclear Information System (INIS)

Barr, D.W.; Heiken, J.H.

1988-05-01

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

Materials Science Division progress report 1986-1988

International Nuclear Information System (INIS)

Kumar, Vijay; Vasumathi, D.; Chandra Sekhar, N.V.

1990-01-01

This is a report on the various Research and Developmental (R and D) activities carried out in the Materials Science Division during the period 1986-88. Most contributions have been presented in the form of abstracts and wherever possible results of several contributions on a related problem have been consolidated into one. The R and D activities covered the following areas: (1) quasicrystalline phase, (2) high temperature superconducting behaviour in metal oxides, (3) physics of colloidal suspensions, (4) behaviour of materials under high pressure, (5) radiation effects in complex alloy systems, (6) inert gas behaviour in metals, and production of crystals, particularly of volatile semiconducting compounds. The lists of publications by the members of the Division and seminars held during 1986-88 are given at the end of the report. (a uthor)

Division of atomic physics

International Nuclear Information System (INIS)

Kroell, S.

1994-01-01

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

Radiochemistry Division annual progress report: 1994

International Nuclear Information System (INIS)

Babu, Y.; Seshagiri, T.K.; Iyer, R.H.

1996-01-01

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

Radiochemistry Division annual progress report: 1993

International Nuclear Information System (INIS)

Natarajan, V.; Godbole, S.V.; Iyer, R.H.

1995-01-01

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 UO 2 and (U, Pu)O 2 . A list of publications by the scientific staff of the Division is also included. (author). refs., 38 figs., 26 tabs

Spectroscopy Division: progress report for 1990

International Nuclear Information System (INIS)

Sharma, A.; Marathe, S.M.

1991-01-01

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

Spectroscopy Division progress report (July 1992-June 1993)

International Nuclear Information System (INIS)

Singh, Mahavir

1994-01-01

The research and development activities of the Spectroscopy Division during the year July 1992-June 1993 are reported in the form of individual summaries. These are arranged under the headings: (1) analytical spectroscopy, (2) infrared and Raman spectroscopy, (3) atomic spectra, (4) electronic spectra, (5) laser spectroscopy, (6) synchrotron beam foil and plasma spectroscopy, (7) optics, (8) electronics and instrumentation, and (9) design, fabrication and workshop etc. The list of publications and papers presented at the various conferences, symposia, workshops etc. by the staff members of the Division during the report period is also given. (author)

Division of Radiological Protection : progress report, 1989-1991

International Nuclear Information System (INIS)

Gupta, B.L.; Nagarajan, P.S.; Bhatt, B.C.; Seethapathy, A.; Pradhan, A.S.; Vishwakarma, R.R.

1992-01-01

This report describes the work of the Division of Radiological Protection during 1989-91, for implementation of radiation safety in all institutions in the country using radiation sources for medical, industrial and research applications. It gives information about personnel monitoring using photographic film and TLD badges, neutron monitoring badges, dosimetric techniques developed, calibration techniques for high-dose irradiators, design and fabrication of special radiation protection instruments, advisory and licensing services, regulation and transport of radioactive materials, periodic protection survey, education and training related to radiation safety programmes. About 164 publications by the staff of this Division are listed. (author). 1 index., 1 tab

Progress report - physical sciences TASCC division 1991 January 01 - June 30

International Nuclear Information System (INIS)

Hardy, J.C.

1991-09-01

This is the second in a new series of reports of the work of the TASCC Division since the creation of the Physical Sciences Unit in 1990. Physical Sciences comprises four main sectors, namely the TASCC, Physics and Chemistry Divisions, and the National Fusion Program Management Office. Physics Division is responsible for research and development in the areas of condensed matter physics, neutron and neutrino physics, and accelerator physics, while TASCC Division deals with research performed with the Tandem and Superconducting Cyclotron accelerators, primarily in the field of Heavy Ion Nuclear Physics

Annual progress report - Health Sciences Division - 1990 January 01 - December 31

International Nuclear Information System (INIS)

1991-06-01

This progress report contains a topical summary of major research in the Health Sciences Division. Separate reports are included for the Dosimetric Research Branch and the Radiation Biology Branch. The major topics discussed in this report include: neutron dosimetry, photon dosimetry, beta ray dosimetry, tritium measurement and dosimetry, internal dosimetry, biological dosimetry, instrumentation and measurement techniques, bioassay and in vivo counting development, dosimetry services, external activities, dose estimation by electron spin resonance, molecular and physical approaches to the structure and genetic function of DNA that determine cellular radioresponse, carcinogenic risks of radiation, stress induced changes in DNA structure and in cell biology, assessment of variation in the responses of individuals to ionizing radiation, cytotoxicity of beryllium, RBE of tritium beta rays for causes of death other than myeloid leukemia in male CBA/H mice, animal facility operations, and the Chalk River follow-up study

Progress report, Physics Division

International Nuclear Information System (INIS)

1986-03-01

This report reviews events and progress in the following areas: development of the TASCC facility; experimental and theoretical nuclear physics research; radionuclide standardization; condensed matter research; applied mathematics; and computer facility operation

Progress report : Technical Physics Division

International Nuclear Information System (INIS)

Gopalaraman, C.P.; Deshpande, R.Y.

1978-01-01

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.)

Radiation Protection Services Division: progress report for 1992-1993

International Nuclear Information System (INIS)

Massand, O.P.; Murthy, B.K.S.

1994-01-01

This report describes the work of the Radiation Protection Services Division during 1993, for implementation of radiation safety in all institutions in India using radiation sources in medical, industrial and research applications. It gives information about personnel monitoring using photographic film and TLD badges, neutron monitoring badges, advisory and licensing services, regulation, transport of radioactive materials and periodic protection survey. About 33 publications by the staff of the Division are also listed. (author). 4 tabs

Control of sporulation-specific cell division in Streptomyces coelicolor

NARCIS (Netherlands)

Noens, Elke

2007-01-01

During developmental cell division in sporulation-committed aerial hyphae of streptomycetes, up to a hundred septa are simultaneously produced, in close harmony with synchromous chromosome condensation and segregation. Several unique protein families are involved in the control of this process,

Radiochemistry Division annual progress report for 1977

International Nuclear Information System (INIS)

Iyer, R.H.; Natarajan, P.R.

1979-01-01

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.)

Progress report - Physical and Environmental Sciences - Physics Division, 1995 January 1 to December 31

International Nuclear Information System (INIS)

Harvey, M.

1996-05-01

This document is a Progress Report for the Physical and Environmental Sciences, Physics Division, for the period 1995 January 1 to December 31, at the Chalk River nuclear Labs. The condensed matter science group continued to operate a multi-faceted program involving collaborative basic and applied research with external scientists in the fields of materials science, physics, chemistry and biology. The Applied Neutron Diffraction for Industry (And) program gained strength with ever wider applications for the nuclear, aerospace, and manufacturing programs. Steps continued towards making neutron scattering facilities at NRU reactor more user friendly. The neutrino physics group, as part of the Sudbury Neutrino Observatory (SNO) Institute, collaborating with scientists from Canada, USA and UK. The accelerator physics group spent considerable effort working with materials and fuels scientists to show the value of accelerators as an out-reactor source of radiation. Specific research activities have included the demonstration of laser plasma deposition of diamond coating, which has potential application for high-wear components in reactors, and the study for a Free Electron Laser upgrade for the IMPELA accelerator. As a result of funding reduction all programs of the Division were dissolved as of 1997 March 31

Progress report - Physical and Environmental Sciences - Physics Division, 1995 January 1 to December 31

Energy Technology Data Exchange (ETDEWEB)

Harvey, M. (ed.)

1996-05-01

This document is a Progress Report for the Physical and Environmental Sciences, Physics Division, for the period 1995 January 1 to December 31, at the Chalk River nuclear Labs. The condensed matter science group continued to operate a multi-faceted program involving collaborative basic and applied research with external scientists in the fields of materials science, physics, chemistry and biology. The Applied Neutron Diffraction for Industry (And) program gained strength with ever wider applications for the nuclear, aerospace, and manufacturing programs. Steps continued towards making neutron scattering facilities at NRU reactor more user friendly. The neutrino physics group, as part of the Sudbury Neutrino Observatory (SNO) Institute, collaborating with scientists from Canada, USA and UK. The accelerator physics group spent considerable effort working with materials and fuels scientists to show the value of accelerators as an out-reactor source of radiation. Specific research activities have included the demonstration of laser plasma deposition of diamond coating, which has potential application for high-wear components in reactors, and the study for a Free Electron Laser upgrade for the IMPELA accelerator. As a result of funding reduction all programs of the Division were dissolved as of 1997 March 31.

Division of Radiological Protection progress report 1982-1988

International Nuclear Information System (INIS)

Gupta, B.L.; Bhat, R.M.; Narayan, G.R.

1989-01-01

This report describes the work of the Division of Radiological Protection during 2-88, for implementation of radiation safety in all institutions in the country using radiation sources for medical, industrial and research applications. It gives information about personnel monitoring using photographic film and TLD badges, neutron monitoring badges, dosimetric techniques developed, calibration facilities and maintenance of national standards for radiation and radioactivity, design and fabrication of special radiation protection instruments, development of coloured indicators for indentification of radiation sterilized medical products, advisory and licencing services, regulation and transport of radioactive materials, periodic protection survey, education and training related to radiation safety programmes. About 500 publications by the staff of this Division are listed. (author). 46 figs

Progress report - physical sciences - physics division 1991 January 01 - June 30

International Nuclear Information System (INIS)

1991-09-01

This is the second in the new series of reports for the Physics Division since the creation of the Physical Sciences Unit in 1990. This report has been subdivided into three self-contained sections covering the activities in the branches for Accelerator Physics, Neutron and Solid State Physics and Theoretical Physics. It is noteworthy that the RFQ1 program with the original vanes has come to a successful conclusion having accelerated 79 mA of protons to 600 keV. The new vanes to achieve a high energy of 1.2 MeV have now been installed and will form the basis for the low energy end of high current proton accelerator development. The progress in the neutron scattering program has been hampered by the NRU reactor being down for repairs since January 1991. Nevertheless a very successful opening ceremony was held to mark the completion of the new DUALSPEC spectrometers and several workshops have been held to promote the understanding of neutron scattering

Spectroscopy Division : Progress report for Oct 1979 - Dec 1980

International Nuclear Information System (INIS)

Saksena, G.D.; Naik, R.C.

1981-01-01

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.)

Progress at LAMPF: Clinton P. Anderson Meson Physics Facility. Progress report, January-June 1981

International Nuclear Information System (INIS)

Allred, J.C.

1981-09-01

Progress at LAMPF is the semiannual progress report of the MP Division of the Los Alamos National Laboratory. The report includes brief reports on research done at LAMPF by researchers from other institutions and Los Alamos divisions

Progress at LAMPF: Clinton P. Anderson Meson Physics Facility. Progress report, January-June 1981

Energy Technology Data Exchange (ETDEWEB)

Allred, J.C. (ed.)

1981-09-01

Progress at LAMPF is the semiannual progress report of the MP Division of the Los Alamos National Laboratory. The report includes brief reports on research done at LAMPF by researchers from other institutions and Los Alamos divisions.

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

International Nuclear Information System (INIS)

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

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.

Technology Development, Evaluation, and Application (TDEA) FY 1998 Progress Report Environment, Safety, and Health (ESH) Division

Energy Technology Data Exchange (ETDEWEB)

Larry G. Hoffman; Kenneth Alvar; Thomas Buhl; Bruce Erdal; Philip Fresquez; Elizabeth Foltyn; Wayne Hansen; Bruce Reinert

1999-06-01

This progress report presents the results of 10 projects funded ($504K) in FY98 by the Technology Development, Evaluation, and Application (TDEA) Committee of the Environment, Safety, and Health Division. Nine projects are new for this year; two projects were completed in their third and final TDEA-funded year. As a result of their TDEA-funded projects, investigators have published 19 papers in professional journals, proceedings, or Los Alamos reports and presented their work at professional meetings. Supplemental funds and in-kind contributions, such as staff time, instrument use, and work space were also provided to the TDEA-funded projects by organizations external to ESH Division. Products generated from the projects funded in FY98 included a new extremity dosimeter that replaced the previously used finger-ring dosimeters, a light and easy-to-use detector to measure energy deposited by neutron interactions, and a device that will allow workers to determine the severity of a hazard.

RESEARCH AREA -- ARTIFICIAL INTELLIGENCE CONTROL (AIR POLLUTION TECHNOLOGY BRANCH, AIR POLLUTION PREVENTION AND CONTROL DIVISION, NRMRL)

Science.gov (United States)

The Air Pollution Technology Branch (APTB) of NRMRL's Air Pollution Prevention and Control Division in Research Triangle Park, NC, has conducted several research projects for evaluating the use of artificial intelligence (AI) to improve the control of pollution control systems an...

Progress at LAMPF: Clinton P. Anderson Meson Physics Facility. Progress report, July-December 1980

International Nuclear Information System (INIS)

Allred, J.C.

1981-03-01

Progress at LAMPF is the semiannual progress report of the MP Division of the Los Alamos National Laboratory. The report also includes brief reports on research done at LAMPF by researchers from other institutions and Los Alamos divisions

Recent Progress in Space-Division Multiplexed Transmission Technologies

DEFF Research Database (Denmark)

Morioka, Toshio

2013-01-01

Recent development of transmission technologies based on space-division multiplexing is described with future perspectives including a recent achievement of one Pb/s transmission in a single strand of fiber....

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.

Spectroscopy Division progress report (January 1991 to June 1992)

International Nuclear Information System (INIS)

Ahmad, S.A.; Kartha, V.B.

1993-01-01

The research and development activities of the Spectroscopy Division during the calendar year 1990-1992 are reported in the form of individual summaries. These are arranged under the headings: (1) analytical spectroscopy, (2) infrared and Raman spectroscopy, (3) atomic spectra, (4) molecular and electronic spectra, (5) laser spectroscopy (6) synchrotron, beam foil and plasma spectroscopy, (7) optics, (8) design, fabrication and workshop etc. The list of publications and papers presented at the various conferences, symposia etc. by the staff members of the Division during the report period is given at the end. (author). figs

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

International Nuclear Information System (INIS)

Chaudhry, Ramesh; Vijendran, P.

1983-01-01

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.)

Energy Division annual progress report for period ending September 30, 1981

Energy Technology Data Exchange (ETDEWEB)

1982-05-01

This eighth annual report of the Division covers work done during FY 1981 (October 1, 1980, through September 30, 1981). As with these documents in the past, the format follows approximately the organizational structure of the Energy Division. Chapters 2 through 6 summarize the activities of the sections of the Division: Environmental Impact Section, headed by H.E. Zittel; Regional and Urban Studies Section, R.M. Davis; Economic Analysis Section, R.B. Shelton; Data and Analysis Section, A.S. Loebl; and Efficiency and Renewables Research Section, J.W. Michel. In addition, work on a variety of projects which cut across section lines is reported in Chapter 7, Integrated Programs. These activities are under the supervision of T.J. Wilbanks, Associate Director for the Division. Separate abstracts are included for individual projects.

Energy Division annual progress report for period ending September 30, 1981

International Nuclear Information System (INIS)

1982-05-01

This eighth annual report of the Division covers work done during FY 1981 (October 1, 1980, through September 30, 1981). As with these documents in the past, the format follows approximately the organizational structure of the Energy Division. Chapters 2 through 6 summarize the activities of the sections of the Division: Environmental Impact Section, headed by H.E. Zittel; Regional and Urban Studies Section, R.M. Davis; Economic Analysis Section, R.B. Shelton; Data and Analysis Section, A.S. Loebl; and Efficiency and Renewables Research Section, J.W. Michel. In addition, work on a variety of projects which cut across section lines is reported in Chapter 7, Integrated Programs. These activities are under the supervision of T.J. Wilbanks, Associate Director for the Division. Separate abstracts are included for individual projects

Spectroscopy Division Progress report for 1977-79

International Nuclear Information System (INIS)

Saksena, G.D.; Naik, R.C.

1979-01-01

An account of the activities of the Spectroscopy Division of the Bhabha Atomic Research Centre, Bombay, covering the period 1977-79 is given. The activities broadly cover the areas of spectrochemical analysis, research and development programmes in the fields of atomic and molecular spectroscopy and design and fabrication of high precision optical instruments and electronic components required for the above programmes. (K.B.)

Metals and Ceramics Division progress report for period ending December 31, 1993

Energy Technology Data Exchange (ETDEWEB)

Craig, D.F.; Bradley, R.A.; Weir, J.R. Jr.

1994-07-01

This report provides an overview of activities and accomplishsments of the division from October 1992 through December 1993; the division is organized to provide technical support, mainly in the area of high-temperature materials, for technologies being developed by DOE. Activities span the range from basic research to industrial interactions (cooperative research and technology transfer). Sections 1-5 describe the different functional groups (engineering materials, high-temperature materials, materials science, ceramics, nuclear fuel materials). Sect. 6 provides an alternative view of the division in terms of the major programs, most of which cross group lines. Sect. 7 summarizes external interactions including cooperative R and D programs and technology transfer functions. Finally, Sect. 8 briefly describes the division`s involvement in educational activities. Several organizational changes were effected during this period.

Radiochemistry Division annual progress report: 1986

International Nuclear Information System (INIS)

Datta, T.

1988-01-01

Research and Development (R and D) activities of the Radiochemistry Division of Bhabha Atomic Research Centre, Bombay during 1986 are reported. Some of the highlights of these activities are solvent extraction studies on U(VI) and trivalent Am, Cm and Cf, low energy and medium energy fission of actinides, nuclear reactions on 197 Au, perturbed angular correlation studies on polymerisation of Hf(IV) and EPR studies on Am doped BaCO 3 , SrSO 4 and LiKSO 4 . Investigations on the complexation, hydrolysis and speciation of Am(III) in phosphate and carbonate media have been carried out with a view to understanding the behaviour of Am ions in natural and waste water systems. The angular momentum studies have shown that fission fragment angular momentum increases with increasing excitation energy and angular momentum of the fissioning due to coupling of various collective rotational degrees of freedom. Angular distribution studies have shown that asymmetric mode fragments have higher anisotropy compared to the symmetric mode fragments due to extended saddle point shape and hence larger effective moment of inertia. Studies on alpha induced nuclear reaction on 197 Au have provided evidence for non-equilibrium particle emission process as against the expected compound nucleus mechanism. EPR and TSL studies on actinide doped solids have shown stabilisation of radicals produced on irradiations as well as provided evidence for chemically induced dynamic nuclear polarization. At the end of the report, a list of publications of the staff members of the Division during the report is given. These publications include journal articles, conference paper and technical reports. (Orig.)

Progress report: Plasma Physics Division (July 1985 to March 1990)

International Nuclear Information System (INIS)

Venkatramani, N.; Thakur, A.V.; Viswanadam, C.

1991-01-01

The report summarizes the research and development (R and D) activities carried out by Laser and Plasma Technology Division, Bhabha Atomic Research Centre, Bombay during the period July 1985 to March 1990. The R and D activites are reported under the headings: 1) Thermal Plasma, 2) Electron Beam Technology, and 3) Industrial Design Section. A list of scientific and technical staff working in the different sections of the Division is also given. (author)

Asymmetric cell division during T cell development controls downstream fate

Science.gov (United States)

Pham, Kim; Shimoni, Raz; Charnley, Mirren; Ludford-Menting, Mandy J.; Hawkins, Edwin D.; Ramsbottom, Kelly; Oliaro, Jane; Izon, David; Ting, Stephen B.; Reynolds, Joseph; Lythe, Grant; Molina-Paris, Carmen; Melichar, Heather; Robey, Ellen; Humbert, Patrick O.; Gu, Min

2015-01-01

During mammalian T cell development, the requirement for expansion of many individual T cell clones, rather than merely expansion of the entire T cell population, suggests a possible role for asymmetric cell division (ACD). We show that ACD of developing T cells controls cell fate through differential inheritance of cell fate determinants Numb and α-Adaptin. ACD occurs specifically during the β-selection stage of T cell development, and subsequent divisions are predominantly symmetric. ACD is controlled by interaction with stromal cells and chemokine receptor signaling and uses a conserved network of polarity regulators. The disruption of polarity by deletion of the polarity regulator, Scribble, or the altered inheritance of fate determinants impacts subsequent fate decisions to influence the numbers of DN4 cells arising after the β-selection checkpoint. These findings indicate that ACD enables the thymic microenvironment to orchestrate fate decisions related to differentiation and self-renewal. PMID:26370500

Spectroscopy Division progress report for January 1985-December 1986

International Nuclear Information System (INIS)

Bellary, V.P.; Balasubramanian, T.K.

1987-01-01

The present report describes the activities of the Spectroscopy Division during the period January 1985-December 1986. Besides meeting the analytical requirements connected with the nuclear energy programmes and the related research and development projects, the Division has continued its efforts to develop and set-up new techniques to improve the speed and efficiency of the analytical capabilities and carry out basic research on atomic and molecular systems of importance to the programmes of the research centre. In the first section of the report, two feature articles, one on Laser Magnetic Resonance Spectroscopy and the other on Nuclear Spins, Moments and Charge Radii of short-lived isotopes and isomers using Laser Spectroscopic Techniques are included. The second section deals with the characterisation of the materials using optical emission, X-ray fluorescence and X-ray excited optical luminescence techniques. Work connected with basic research on atomic and molecular systems is described in the third section. Work on atomic systems includes high resolution studies on rare-earth ions in free and condensed states and the evaluation of the nuclear properties of short-lived radioactive elements. Work on molecular systems includes theoretical aspects pertaining to rotational intensities in forbidden transitions of diatomic molecules, high resolution spectral studies of diatomic molecules and free radicals, laser spectroscopy of alkali dimers. The fourth and fifth sections deal with the work concerning the designing and fabrication of sophisticated optical equipments and electronic components and system required for the various research and development programmes in the Division. Members of the Division continued to participate in the teaching programmes, guiding research leading to M.Sc. and Ph.D. degrees, training in spectrochemical analysis and in symposia and conferences. These activities are described in the last section of the report. (author)

Interface control document between PUREX/UO3 Plant Transition and Solid Waste Disposal Division

International Nuclear Information System (INIS)

Duncan, D.R.

1994-01-01

This interface control document (ICD) between PUREX/UO 3 Plant Transition (PPT) and Solid Waste Disposal Division (SWD) establishes at a top level the functional responsibilities of each division where interfaces exist between the two divisions. Since the PUREX Transition and Solid Waste Disposal divisions operate autonomously, it is important that each division has a clear understanding of the other division's expectations regarding these interfaces. This ICD primarily deals with solid wastes generated by the PPT. In addition to delineating functional responsibilities, the ICD includes a baseline description of those wastes that will require management as part of the interface between the divisions. The baseline description of wastes includes waste volumes and timing for use in planning the proper waste management capabilities: the primary purpose of this ICD is to ensure defensibility of expected waste stream volumes and Characteristics for future waste management facilities. Waste descriptions must be as complete as-possible to ensure adequate treatment, storage, and disposal capability will exist. The ICD also facilitates integration of existing or planned waste management capabilities of the PUREX. Transition and Solid Waste Disposal divisions. The ICD does not impact or affect the existing processes or procedures for shipping, packaging, or approval for shipping wastes by generators to the Solid Waste Division

Chemical Sciences Division: Annual report 1992

International Nuclear Information System (INIS)

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)

Metals and Ceramics Division materials science annual progress report for period ending June 30, 1977

International Nuclear Information System (INIS)

McHargue, C.J.

1977-09-01

Progress is reported for research programs in the metals and ceramics division of ORNL. In structure of materials, theoretical research, x-ray diffraction studies, studies of erosion of ceramics, preparation and synthesis of high temperature and special service materials, and studies of stabilities of microphases in high-temperature structural materials. Research into deformation and mechanical properties included physical metallurgy, and grain boundary segregation and embrittlement. Physical properties and transport phenomena were studied and included mechanisms of surface and solid state reactions, and properties of superconducting materials. The radiation effects program, directed at understanding the effects of composition and microstructure on the structure and properties of materials irradiated at elevated temperatures, is also described

Metals and Ceramics Division progress report for period ending September 30, 1991

Energy Technology Data Exchange (ETDEWEB)

1992-03-01

This report provides a brief overview of the activities and accomplishments of the Metals and Ceramics (M C) Division during fiscal year (FY) 1991. The division is organized to provide technical support, primarily in the area of high-temperature materials, for the various technologies being developed by the US Department of Energy (DOE). Activities span the range from basic research (through applied research and engineering development) to industrial interactions (through cooperative research and a strong technology transfer program). The division is organized in functional groups that encompass nearly all of the disciplines needed to develop and to apply materials in high-temperature applications. Sections I through 5 describe the different functional groups; Sect. 6 provides an alternative view of the division in terms of the major programs, most of which cross group lines; and Sect. 7 summarizes external interactions including cooperative research and development programs, educational activities, and technology transfer functions. Appendices describe the organizational structure, note personnel changes, present honors and awards received by division members, and contain listings of publications completed and presentations made at technical meetings.

Metals and Ceramics Division progress report for period ending September 30, 1991

International Nuclear Information System (INIS)

1992-03-01

This report provides a brief overview of the activities and accomplishments of the Metals and Ceramics (M ampersand C) Division during fiscal year (FY) 1991. The division is organized to provide technical support, primarily in the area of high-temperature materials, for the various technologies being developed by the US Department of Energy (DOE). Activities span the range from basic research (through applied research and engineering development) to industrial interactions (through cooperative research and a strong technology transfer program). The division is organized in functional groups that encompass nearly all of the disciplines needed to develop and to apply materials in high-temperature applications. Sections I through 5 describe the different functional groups; Sect. 6 provides an alternative view of the division in terms of the major programs, most of which cross group lines; and Sect. 7 summarizes external interactions including cooperative research and development programs, educational activities, and technology transfer functions. Appendices describe the organizational structure, note personnel changes, present honors and awards received by division members, and contain listings of publications completed and presentations made at technical meetings

Health, Safety, and Environment Division: Annual progress report 1987

Energy Technology Data Exchange (ETDEWEB)

Rosenthal, M.A. (comp.)

1988-04-01

The primary responsibility of the Health, Safety, and Environment (HSE) Division at the Los Alamos National Laboratory is to provide comprehensive occupational health and safety programs, waste processing, and environment protection. These activities are designed to protect the worker, the public, and the environment. Many disciplines are required to meet the responsibilities, including radiation protection, industrial hygiene, safety, occupational medicine, environmental science, epidemiology, and waste management. New and challenging health and safety problems arise occasionally from the diverse research and development work of the Laboratory. 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 and to help develop better occupational health and safety practices.

Health, Safety, and Environment Division: Annual progress report 1987

International Nuclear Information System (INIS)

Rosenthal, M.A.

1988-04-01

The primary responsibility of the Health, Safety, and Environment (HSE) Division at the Los Alamos National Laboratory is to provide comprehensive occupational health and safety programs, waste processing, and environment protection. These activities are designed to protect the worker, the public, and the environment. Many disciplines are required to meet the responsibilities, including radiation protection, industrial hygiene, safety, occupational medicine, environmental science, epidemiology, and waste management. New and challenging health and safety problems arise occasionally from the diverse research and development work of the Laboratory. 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 and to help develop better occupational health and safety practices

Physics division. Progress report for period ending September 30, 1995

International Nuclear Information System (INIS)

Ball, S.J.

1997-04-01

This report covers the research and development activities of the Physics Division for the 1995 and 1996 fiscal years, beginning October 1, 1994, and ending September 30, 1996. The activities of the Division continue to be concentrated in the areas of experimental nuclear physics, experimental atomic physics, and theoretical nuclear and atomic physics. In addition, there are smaller programs in plasma diagnostics and data compilation and evaluation. During the period of this report, there has been considerable success in bringing the Holifield Radioactive Ion Beam Facility (HRIBF) into routine operation. The budgets of the nuclear physics portion of the Division have increased each year in nearly all areas, and several new members have been added to the Division research and development staff. On August 30, 1996, the HRIBF successfully accelerated its first radioactive ion beams, 69 As and 70 As. Prior to this, the heart of the facility, the RIB injector system, was completed, including installation of a remote handling system for the target/ion source assembly. Target and ion source development is likely to be the technical key to success of the HRIBF. We have expanded our efforts in those development areas. Of special note is the development of highly permeable composite targets which have now been shown to allow release of difficult-to-produce radioactive ions such as 17,18 F. A summary of the HRIBF work is provided in Chapter 1, along with supporting activities of the Joint Institute for Heavy Ion Research

Control of cell division and radiation injury in mouse skin

International Nuclear Information System (INIS)

Yamaguchi, Takeo

1974-01-01

The method for determining the inhibitors of cell division (chalone-adrenalin system) in the irradiated epidermis and blood was developed using the epidermis of mouse ear conch during the cure of wounds (in vivo), and the epidermis cultured for a long period (in vitro). The whole body was irradiated with 200KV, 20 mA x-rays of 96 R/min filtered by 0.5 mmCu + 0.5 mmAl. Chalone, which is a physiologically intrinsic substance to control the proliferation, inhibits the DNA synthesis. From changes in cell division with time, chalone in the epidermis is considered to inhibit each process from G 2 to M, from G 2 to S, from G 1 to S. Adrenalin is indispensable when epidermal chalone acts the inhibition of cell division. Chalone activities in the epidermis irradiated with almost lethal doses were decreased. Factors to inhibit the proliferation of the epidermis by the potentiation of chalone and adrenalin are present in sera of animals irradiated to x-rays. (Serizawa, K.)

Polarity, cell division, and out-of-equilibrium dynamics control the growth of epithelial structures

Science.gov (United States)

Cerruti, Benedetta; Puliafito, Alberto; Shewan, Annette M.; Yu, Wei; Combes, Alexander N.; Little, Melissa H.; Chianale, Federica; Primo, Luca; Serini, Guido; Mostov, Keith E.; Celani, Antonio

2013-01-01

The growth of a well-formed epithelial structure is governed by mechanical constraints, cellular apico-basal polarity, and spatially controlled cell division. Here we compared the predictions of a mathematical model of epithelial growth with the morphological analysis of 3D epithelial structures. In both in vitro cyst models and in developing epithelial structures in vivo, epithelial growth could take place close to or far from mechanical equilibrium, and was determined by the hierarchy of time-scales of cell division, cell–cell rearrangements, and lumen dynamics. Equilibrium properties could be inferred by the analysis of cell–cell contact topologies, and the nonequilibrium phenotype was altered by inhibiting ROCK activity. The occurrence of an aberrant multilumen phenotype was linked to fast nonequilibrium growth, even when geometric control of cell division was correctly enforced. We predicted and verified experimentally that slowing down cell division partially rescued a multilumen phenotype induced by altered polarity. These results improve our understanding of the development of epithelial organs and, ultimately, of carcinogenesis. PMID:24145168

Reactor Division semestrial progress report January - June 1987

International Nuclear Information System (INIS)

1987-01-01

This report covers the activities of the reactor division at the SCK-CEN during the first semester of 1987. It deals with the BR-2 materials testing reactor, the BR-3 power plant, reactor physics, water cooled reactors, fast neutron reactors, fusion, non nuclear programmes, testing and commissioning, high and medium activities, and informatics. (MCB)

Reactor Division semestrial progress report July - December 1987

International Nuclear Information System (INIS)

1987-01-01

This report covers the activities of the reactor division at the SCK-CEN during the second semester of 1987. It deals with the BR-2 materials testing reactor, the BR-3 power plant, reactor physics, water cooled reactors, fast neutron reactors, fusion, non nuclear programmes, testing and commissioning, high and medium activities, and informatics. (MCB)

Physics Division progress report for period ending September 30, 1984

Energy Technology Data Exchange (ETDEWEB)

Livingston, A.B. (ed.)

1985-01-01

The research activities of the Division are centered primarily in three areas: experimental nuclear physics, experimental atomic physics, and theoretical nuclear and atomic physics. The largest of these efforts, experimental nuclear physics, is dominated by the heavy ion research program. A major responsibility under this program is the operation of the Holifield Heavy Ion Research Facility as a national user facility. During the period of this report, the facility has begun routine operation for the experimental program. The experimental atomic physics program has two components: the accelerator-based studies of basic collisional phenomena and the studies in support of the controlled fusion program. Also associated with the fusion-related studies are a plasma diagnostics program and the operation of an atomic physics data center. The theoretical physics program, both nuclear and atomic, is covered. This program has benefited this year from the success of the VAX-AP computer system and from the increase in manpower provided by the ORNL/University of Tennessee Distinguished Scientist Program. Smaller programs in applications and high-energy physics are summarized. During the period of this report, we continued to explore possible future extensions of the Holifield Facility. We retain a strong interest in a relativistic heavy-ion collider in the 10 x 10 GeV/nuclear energy range. The ideas for such a facility, described in last year's report, have been modified to utilize the HHIRF 25 MV tandem accelerator as the first stage. Finally, the report concludes with some general information on publications, Division activities, and personnel changes.

Physics Division progress report for period ending September 30, 1984

International Nuclear Information System (INIS)

Livingston, A.B.

1985-01-01

The research activities of the Division are centered primarily in three areas: experimental nuclear physics, experimental atomic physics, and theoretical nuclear and atomic physics. The largest of these efforts, experimental nuclear physics, is dominated by the heavy ion research program. A major responsibility under this program is the operation of the Holifield Heavy Ion Research Facility as a national user facility. During the period of this report, the facility has begun routine operation for the experimental program. The experimental atomic physics program has two components: the accelerator-based studies of basic collisional phenomena and the studies in support of the controlled fusion program. Also associated with the fusion-related studies are a plasma diagnostics program and the operation of an atomic physics data center. The theoretical physics program, both nuclear and atomic, is covered. This program has benefited this year from the success of the VAX-AP computer system and from the increase in manpower provided by the ORNL/University of Tennessee Distinguished Scientist Program. Smaller programs in applications and high-energy physics are summarized. During the period of this report, we continued to explore possible future extensions of the Holifield Facility. We retain a strong interest in a relativistic heavy-ion collider in the 10 x 10 GeV/nuclear energy range. The ideas for such a facility, described in last year's report, have been modified to utilize the HHIRF 25 MV tandem accelerator as the first stage. Finally, the report concludes with some general information on publications, Division activities, and personnel changes

Solid State Division progress report for period ending September 30, 1984

International Nuclear Information System (INIS)

Green, P.H.; Watson, D.M.

1985-03-01

During the reporting period, relatively minor changes have occurred in the research areas of interest to the Division. Nearly all the research of the Division can be classified broadly as mission-oriented basic research. Topics covered include: theoretical solid state physics; surface and near-surface properties of solids; defects in solids; transport properties of solids; neutron scattering; and preparation and characterization of research materials

Solid State Division progress report for period ending September 30, 1984

Energy Technology Data Exchange (ETDEWEB)

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

1985-03-01

During the reporting period, relatively minor changes have occurred in the research areas of interest to the Division. Nearly all the research of the Division can be classified broadly as mission-oriented basic research. Topics covered include: theoretical solid state physics; surface and near-surface properties of solids; defects in solids; transport properties of solids; neutron scattering; and preparation and characterization of research materials. (GHT)

Physics Division progress report for period ending September 30, 1990

International Nuclear Information System (INIS)

Livingston, A.B.

1991-03-01

The activities of this Division continue to be concentrated in the areas of experimental nuclear physics, experimental atomic physics, and theoretical nuclear and atomic physics. The Holifield Heavy Ion Research Facility and its operation as a national user facility continued as the single largest activity within the Division. The experimental nuclear physics program continues to emphasize heavy ion studies, with much of the activity centered at the Holifield Facility. The work with heavy ions at ultrarelativistic energies continues at the CERN SPS. Studies at the Brookhaven AGS, particularly in preparation of future experiments at RHIC, have seen an increased emphasis. A major consortium has been formed to propose the design and construction of a dimuon detector as the basis for one the principal experiments for RHIC. Also included are results from the increasing effort in particle physics, including participation in the L* proposal for the SSC. The UNISOR program, since its inception, has been associated intimately with the Division and, most particularly, with the Holifield Facility. A major area of experimental research for the Division is atomic physics. This activity comprises two groups: one on accelerator-based atomic physics, centered primarily at the EN-tandem and the Holifield Facility, but extending this year to an experiment at ultrarelativistic energies at the CERN SPS; and one on atomic physics in support of fusion energy, based primarily at the ECR ion source facility. Included in this section is also a description of a new effort in multicharged ion-surface interactions, and details of a planned upgrade of the ECR source

Physics Division progress report for period ending September 30, 1990

Energy Technology Data Exchange (ETDEWEB)

Livingston, A.B. (ed.)

1991-03-01

The activities of this Division continue to be concentrated in the areas of experimental nuclear physics, experimental atomic physics, and theoretical nuclear and atomic physics. The Holifield Heavy Ion Research Facility and its operation as a national user facility continued as the single largest activity within the Division. The experimental nuclear physics program continues to emphasize heavy ion studies, with much of the activity centered at the Holifield Facility. The work with heavy ions at ultrarelativistic energies continues at the CERN SPS. Studies at the Brookhaven AGS, particularly in preparation of future experiments at RHIC, have seen an increased emphasis. A major consortium has been formed to propose the design and construction of a dimuon detector as the basis for one the principal experiments for RHIC. Also included are results from the increasing effort in particle physics, including participation in the L* proposal for the SSC. The UNISOR program, since its inception, has been associated intimately with the Division and, most particularly, with the Holifield Facility. A major area of experimental research for the Division is atomic physics. This activity comprises two groups: one on accelerator-based atomic physics, centered primarily at the EN-tandem and the Holifield Facility, but extending this year to an experiment at ultrarelativistic energies at the CERN SPS; and one on atomic physics in support of fusion energy, based primarily at the ECR ion source facility. Included in this section is also a description of a new effort in multicharged ion-surface interactions, and details of a planned upgrade of the ECR source.

Physics division. Progress report for period ending September 30, 1996

Energy Technology Data Exchange (ETDEWEB)

Ball, S.J. [ed.

1997-04-01

This report covers the research and development activities of the Physics Division for the 1995 and 1996 fiscal years, beginning October 1, 1994, and ending September 30, 1996. The activities of the Division continue to be concentrated in the areas of experimental nuclear physics, experimental atomic physics, and theoretical nuclear and atomic physics. In addition, there are smaller programs in plasma diagnostics and data compilation and evaluation. During the period of this report, there has been considerable success in bringing the Holifield Radioactive Ion Beam Facility (HRIBF) into routine operation. The budgets of the nuclear physics portion of the Division have increased each year in nearly all areas, and several new members have been added to the Division research and development staff. On August 30, 1996, the HRIBF successfully accelerated its first radioactive ion beams, {sup 69}As and {sup 70}As. Prior to this, the heart of the facility, the RIB injector system, was completed, including installation of a remote handling system for the target/ion source assembly. Target and ion source development is likely to be the technical key to success of the HRIBF. We have expanded our efforts in those development areas. Of special note is the development of highly permeable composite targets which have now been shown to allow release of difficult-to-produce radioactive ions such as {sup 17,18}F. A summary of the HRIBF work is provided in Chapter 1, along with supporting activities of the Joint Institute for Heavy Ion Research.

Subtractive, divisive and non-monotonic gain control in feedforward nets linearized by noise and delays.

Science.gov (United States)

Mejias, Jorge F; Payeur, Alexandre; Selin, Erik; Maler, Leonard; Longtin, André

2014-01-01

The control of input-to-output mappings, or gain control, is one of the main strategies used by neural networks for the processing and gating of information. Using a spiking neural network model, we studied the gain control induced by a form of inhibitory feedforward circuitry-also known as "open-loop feedback"-, which has been experimentally observed in a cerebellum-like structure in weakly electric fish. We found, both analytically and numerically, that this network displays three different regimes of gain control: subtractive, divisive, and non-monotonic. Subtractive gain control was obtained when noise is very low in the network. Also, it was possible to change from divisive to non-monotonic gain control by simply modulating the strength of the feedforward inhibition, which may be achieved via long-term synaptic plasticity. The particular case of divisive gain control has been previously observed in vivo in weakly electric fish. These gain control regimes were robust to the presence of temporal delays in the inhibitory feedforward pathway, which were found to linearize the input-to-output mappings (or f-I curves) via a novel variability-increasing mechanism. Our findings highlight the feedforward-induced gain control analyzed here as a highly versatile mechanism of information gating in the brain.

Subtractive, divisive and non-monotonic gain control in feedforward nets linearized by noise and delays

Directory of Open Access Journals (Sweden)

Jorge F Mejias

2014-02-01

Full Text Available The control of input-to-output mappings, or gain control, is one of the main strategies used by neural networks for the processing and gating of information. Using a spiking neural network model, we studied the gain control induced by a form of inhibitory feedforward circuitry — also known as ’open-loop feedback’ —, which has been experimentally observed in a cerebellum-like structure in weakly electric fish. We found, both analytically and numerically, that this network displays three different regimes of gain control: subtractive, divisive, and non-monotonic. Subtractive gain control was obtained when noise is very low in the network. Also, it was possible to change from divisive to non-monotonic gain control by simply modulating the strength of the feedforward inhibition, which may be achieved via long-term synaptic plasticity. The particular case of divisive gain control has been previously observed in vivo in weakly electric fish. These gain control regimes were robust to the presence of temporal delays in the inhibitory feedforward pathway, which were found to linearize the input-to-output mappings (or f-I curves via a novel variability-increasing mechanism. Our findings highlight the feedforward-induced gain control analyzed here as a highly versatile mechanism of information gating in the brain.

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

International Nuclear Information System (INIS)

Lyon, W.S.

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

Chemistry Division : Annual progress report of 1974

International Nuclear Information System (INIS)

1974-01-01

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.)

TASCC Division progress report

International Nuclear Information System (INIS)

Hardy, J.C.

1992-10-01

The TASCC (Tandem Accelerator-Superconducting Cyclotron) facility is devoted to developing and providing beams for an experimental program of basic nuclear research. Beam was on target for 2901 hours during the period of interest. The cyclotron provided beam for 524 hours, and tandem beams were used for a total of 3940 hours. The most exciting experimental result was the first evidence of a rotational band with the characteristics of hyperdeformation: a ridge-valley structure in 152 Dy. This progress report details experimental results and instrumentation and facility development over the period. (L.L.) (refs., tabs., figs.)

Progress report physics division, 1983 July 1 - December 31

International Nuclear Information System (INIS)

1984-02-01

This report summarizes work carried out during the last half of 1983 in the Physics Division of the Chalk River Nuclear Laboratories in the areas of superconducting cyclotron facility development, nuclear physics research, applied physics, solid state physics, and applied mathematics and computation

Health and Safety Research Division progress report for the period April 1, 1990--September 30, 1991

Energy Technology Data Exchange (ETDEWEB)

Kaye, S.V.

1992-03-01

This is a brief progress report from the Health and Safety Research Division of Oak Ridge National Laboratory. Information is presented in the following sections: Assessment Technology including Measurement Applications and Development, Pollutant Assessments, Measurement Systems Research, Dosimetry Applications Research, Metabolism and Dosimetry Research and Nuclear Medicine. Biological and Radiation Physics including Atomic, Molecular, and High Voltage Physics, Physics of Solids and Macromolecules, Liquid and Submicron Physics, Analytic Dosimetry and Surface Physics and Health Effects. Chemical Physics including Molecular Physics, Photophysics and Advanced Monitoring Development. Biomedical and Environmental Information Analysis including Human Genome and Toxicology, Chemical Hazard Evaluation and Communication, Environmental Regulations and Remediation and Information Management Technology. Risk Analysis including Hazardous Waste.

The records of radiation control division, No.22 (1985)

International Nuclear Information System (INIS)

Fukui, Masami; Katsurayama, Kousuke; Ishida, Masahiro

1987-03-01

This report is a summary of activities of the radiation control division on the safety management in FY 1985. This report describes the records of the radiation control based on the activities of Indoor Radiation Control Section, Field Radiation Control Section and Personnel Radiation Control Section. External radiation doses were monitored using survey meters and film badges in the working area. Radioactive concentrations in dust and air were monitored in the radiation controlled area and at a number of locations outside the KURRI facilities. Reports of routine tasks such as the meteorological records, and the control of human exposure to radiation are described. This report also summarizes number of unscheduled tasks performed, including the replacement of the centralized monitoring board for radiation control, radiation monitors related to the extension of the spent fuel storage building, and the computer processing system of some indoor radiation monitors. Measurements of environmental radioactivity at several field locations are also presented in this report. (author)

Fusion Energy Division annual progress report, period ending December 31, 1989

Energy Technology Data Exchange (ETDEWEB)

Sheffield, J.; Baker, C.C.; Saltmarsh, M.J.

1991-07-01

The Fusion Program of Oak Ridge National Laboratory (ORNL) carries out research in most areas of magnetic confinement fusion. The program is directed toward the development of fusion as an energy source and is a strong and vital component of both the US fusion program and the international fusion community. Issued as the annual progress report of the ORNL Fusion Energy Division, this report also contains information from components of the Fusion Program that are carried out by other ORNL organizations (about 15% of the program effort). The areas addressed by the Fusion Program and discussed in this report include the following: Experimental and theoretical research on magnetic confinement concepts, engineering and physics of existing and planned devices, including remote handling, development and testing of diagnostic tools and techniques in support of experiments, assembly and distribution to the fusion community of databases on atomic physics and radiation effects, development and testing of technologies for heating and fueling fusion plasmas, development and testing of superconducting magnets for containing fusion plasmas, development and testing of materials for fusion devices, and exploration of opportunities to apply the unique skills, technology, and techniques developed in the course of this work to other areas. Highlights from program activities are included in this report.

Fusion Energy Division annual progress report, period ending December 31, 1989

International Nuclear Information System (INIS)

Sheffield, J.; Baker, C.C.; Saltmarsh, M.J.

1991-07-01

The Fusion Program of Oak Ridge National Laboratory (ORNL) carries out research in most areas of magnetic confinement fusion. The program is directed toward the development of fusion as an energy source and is a strong and vital component of both the US fusion program and the international fusion community. Issued as the annual progress report of the ORNL Fusion Energy Division, this report also contains information from components of the Fusion Program that are carried out by other ORNL organizations (about 15% of the program effort). The areas addressed by the Fusion Program and discussed in this report include the following: Experimental and theoretical research on magnetic confinement concepts, engineering and physics of existing and planned devices, including remote handling, development and testing of diagnostic tools and techniques in support of experiments, assembly and distribution to the fusion community of databases on atomic physics and radiation effects, development and testing of technologies for heating and fueling fusion plasmas, development and testing of superconducting magnets for containing fusion plasmas, development and testing of materials for fusion devices, and exploration of opportunities to apply the unique skills, technology, and techniques developed in the course of this work to other areas. Highlights from program activities are included in this report

Interface control document between Analytical Services and Solid Waste Disposal Division

International Nuclear Information System (INIS)

Venetz, T.J.

1995-01-01

This interface control document (ICD) between Analytical Services and Solid Waste Disposal (SWD) establishes a baseline description of the support needed and the wastes that will require management as part of the interface between the two divisions. It is important that each division has a clear understanding of the other division's expectations regarding levels and type of support needed. This ICD deals with the waste sampling support needed by SWD and the waste generated by the specified analytical laboratories. The baseline description of wastes includes waste volumes, characteristics and shipping schedules, which will be used to plan the proper support requirements. The laboratories included in this document are 222-S Laboratory Facility, the Waste Sampling and Characterization Facility (WSCF) and the Chemical Engineering Laboratory. These three facilities provide support to the entire site and are not associated with one major program/facility. The laboratories associated with major facilities or programs such as Engineering/Environmental Development Laboratory at K Basins Operation are not within the scope of this document

E-Division semiannual report. Progress report, June 1--December 31, 1977. [Electronics and Instrumentation Division, LASL

Energy Technology Data Exchange (ETDEWEB)

Kelley, P.A. (comp.)

1978-03-01

The status of the programs and projects of the Electronics Division is reported for the period of June through December 1977. The presentation is divided into three sections: Research, Engineering Support, and Technical Services. Each of these sections presents the activities and accomplishments of the corresponding branch within the Division. The primary goal of the Research and Development branch is to advance technology for future applications. The primary goal of the Engineering Support branch is to apply advanced technology to laboratory and material problems. The primary goal of the Technical Services branch is to provide a technical base and support for Laboratory programs. These goals are reflected in this report. Among the subject areas included are the following: radiation detectors, temperature monitoring, electromagnetic probing, Josephson junction switching devices, fiber optics, high-temperature electronics, HVAC systems, microprocessors, fuel cell-powered vehicles, laser fusion.

Health and Safety Research Division progress report, October 1, 1982-June 30, 1984

International Nuclear Information System (INIS)

Kaye, S.V.

1984-08-01

The work accomplished by the Health and Safety Research Division, Oak Ridge National Laboratory is summarized. Research, assessments and technical measurements done by the division between October 1982 and June 1984 are summarized. Separate analytics were written for each chapter

Progress report - Physical and Environmental Sciences - Physics Division. 1994 January 1 to December 31

International Nuclear Information System (INIS)

Harvey, M.

1995-09-01

This report marks the change from biannual to annual reports recording technical developments in Physics Division. During this period, AECL has continued with its restructuring program, with Physics Division now included in an expanded Physical and Environmental Sciences Unit. The Division itself remains unchanged, with major activities on neutron scattering, the Sudbury Neutrino Observatory and developments and applications of accelerator technology. (author)

Progress report - Physical and Environmental Sciences - Physics Division. 1994 January 1 to December 31

Energy Technology Data Exchange (ETDEWEB)

Harvey, M [ed.

1995-09-01

This report marks the change from biannual to annual reports recording technical developments in Physics Division. During this period, AECL has continued with its restructuring program, with Physics Division now included in an expanded Physical and Environmental Sciences Unit. The Division itself remains unchanged, with major activities on neutron scattering, the Sudbury Neutrino Observatory and developments and applications of accelerator technology. (author).

Effect of bleomycin and irradiation on G2 progression

International Nuclear Information System (INIS)

Kimler, B.F.

1979-01-01

The interaction of bleomycin and x-irradiation on the induction of G 2 delay in Chinese hamster ovary cells was investigated utilizing the mitotic selection procedure for cell cycle analysis. Following the addition of BLM, the number of cells selected in mitosis remained at control level for a refractory period and then decreased. The location of the transition point, i.e., the age in G 2 at which cells become refractory to a progression blockade, was concentration-dependent, ranging from the S/G 2 boundary at low concentrations to the G 2 /M boundary at high concentrations. Depending upon the concentration of the drug used and the duration of exposure, the mitotic rate either decreased to zero or else leveled off at some intermediate value and then recovered to the control level. The duration of BLM-induced division delay was thus dependent upon the concentration used and the duration of exposure. When cells were treated with pulses of bleomycin (10-500 μg/ml) in addition to x-irradiation, the mitotic rate declined as with exposure to x-ray alone. However, the recovery from radiation-induced division delay and the subsequent reappearance of mitotic cells in the selection window was delayed until the cells had recovered from their BLM-induced division delay. This implies that, in contrast to the synergistic effects observed for cell lethality, BLM and radiation do not interact in the production of a progression blockade and the resultant division delay

Physics Division progress report for period ending September 30, 1985

Energy Technology Data Exchange (ETDEWEB)

Livingston, A.B. (ed.)

1986-04-01

This report covers the research and development activities of the Physics Division for the 1985 fiscal year. The research activities were centered on experimental nuclear physics, experimental atomic physics, and theoretical nuclear and atomic physics. The experimental nuclear physics program is dominated by heavy ion research. A major part of this effort is the responsibility for operating the Holifield Heavy Ion Research Facility as a national user facility. A major new activity described is the preparation for participation in an ultrarelativistic heavy ion experiment to be performed at CERN in 1986. The experimental atomic physics program has two components: the accelerator-based studies of basic collisional phenomena and the studies in support of the controlled fusion program. Also associated with the fusion-related studies are a plasma diagnostics program and the operation of an atomic physics data center. Theory efforts associated with the UNISOR program are described, as well as smaller programs in applications and high-energy physics. (LEW)

Physics Division progress report for period ending September 30, 1985

International Nuclear Information System (INIS)

Livingston, A.B.

1986-04-01

This report covers the research and development activities of the Physics Division for the 1985 fiscal year. The research activities were centered on experimental nuclear physics, experimental atomic physics, and theoretical nuclear and atomic physics. The experimental nuclear physics program is dominated by heavy ion research. A major part of this effort is the responsibility for operating the Holifield Heavy Ion Research Facility as a national user facility. A major new activity described is the preparation for participation in an ultrarelativistic heavy ion experiment to be performed at CERN in 1986. The experimental atomic physics program has two components: the accelerator-based studies of basic collisional phenomena and the studies in support of the controlled fusion program. Also associated with the fusion-related studies are a plasma diagnostics program and the operation of an atomic physics data center. Theory efforts associated with the UNISOR program are described, as well as smaller programs in applications and high-energy physics

Energy Division annual progress report for period ending September 30, 1983

Energy Technology Data Exchange (ETDEWEB)

1984-06-01

This report covers work done during FY 1983 by the staff of the Energy Division and its subcontractors and by colleagues in other Oak Ridge National Laboratory divisions working on Energy Division projects. The work can be divided into four areas: (1) analysis and assessment, (2) models and data systems, (3) research to improve the efficiency of energy use and to improve electric power transmission and distribution, and (4) research utilization. Support came principally from the US Department of Energy (DOE), the US Nuclear Regulatory Commission, and the US Department of Defense, but also from a number of other agencies and organizations. Analysis and assessment included work on (a) environmental issues, including those deriving from the preparation of environmental impact statements; (b) energy and resource analysis; and (c) emergency preparedness. The models and data systems area involved research on evaluating and developing energy, environment, and engineering simulation models and on devising large data management systems, evaluating user data requirements, and compiling data bases. Research on improving the efficiency of energy use was focused primarily on the buildings and electricity sectors. A major effort on heat pump technology, which includes both heat-activated and electrically driven systems, continues. An important aspect of all the work was research utilization. Since the Energy Division is doing applied research, results are, by definition, intended to solve problems or answer questions of DOE and other sponsors. However, there are other users, and research utilization activities include technology transfer, commercialization efforts, outreach to state and regional organizations, and, of course, information dissemination.

Energy Division annual progress report for period ending September 30, 1983

International Nuclear Information System (INIS)

1984-06-01

This report covers work done during FY 1983 by the staff of the Energy Division and its subcontractors and by colleagues in other Oak Ridge National Laboratory divisions working on Energy Division projects. The work can be divided into four areas: (1) analysis and assessment, (2) models and data systems, (3) research to improve the efficiency of energy use and to improve electric power transmission and distribution, and (4) research utilization. Support came principally from the US Department of Energy (DOE), the US Nuclear Regulatory Commission, and the US Department of Defense, but also from a number of other agencies and organizations. Analysis and assessment included work on (a) environmental issues, including those deriving from the preparation of environmental impact statements; (b) energy and resource analysis; and (c) emergency preparedness. The models and data systems area involved research on evaluating and developing energy, environment, and engineering simulation models and on devising large data management systems, evaluating user data requirements, and compiling data bases. Research on improving the efficiency of energy use was focused primarily on the buildings and electricity sectors. A major effort on heat pump technology, which includes both heat-activated and electrically driven systems, continues. An important aspect of all the work was research utilization. Since the Energy Division is doing applied research, results are, by definition, intended to solve problems or answer questions of DOE and other sponsors. However, there are other users, and research utilization activities include technology transfer, commercialization efforts, outreach to state and regional organizations, and, of course, information dissemination

Annual progress report for 1983 of Theoretical Physics Division

International Nuclear Information System (INIS)

Rastogi, B.P.; Menon, S.V.G.

1984-01-01

A resume of the work done in the Theoretical Physics Division of the Bhadha Atomic Research Centre, Bombay, during the calendar year 1983 is reported in the form of individual summaries. The main thrust of the work has been in the field of particle transport theory, reactor physics and reactor safety. (M.G.B)

Energy Division annual progress report for period ending September 30, 1986

Energy Technology Data Exchange (ETDEWEB)

1987-06-01

This report describes work done by staff of the Energy Division of Oak Ridge National Laboratory during FY 1986. The work of the Division is quite diversified, but it can be divided into four research themes: (1) technology for improving the productivity of energy use; (2) technology for electric power systems; (3) analysis and assessment of energy and environmental issues, policies, and technologies; and (4) data systems research and development (R and D). The research is supported by the US Department of Energy (DOE), numerous other federal agencies, and some private organizations. 190 refs., 60 figs., 23 tabs.

Energy Division annual progress report for period ending September 30, 1986

International Nuclear Information System (INIS)

1987-06-01

This report describes work done by staff of the Energy Division of Oak Ridge National Laboratory during FY 1986. The work of the Division is quite diversified, but it can be divided into four research themes: (1) technology for improving the productivity of energy use; (2) technology for electric power systems; (3) analysis and assessment of energy and environmental issues, policies, and technologies; and (4) data systems research and development (R and D). The research is supported by the US Department of Energy (DOE), numerous other federal agencies, and some private organizations. 190 refs., 60 figs., 23 tabs

A Bistable Circuit Involving SCARECROW-RETINOBLASTOMA Integrates Cues to Inform Asymmetric Stem Cell Division

Science.gov (United States)

Cruz-Ramírez, Alfredo; Díaz-Triviño, Sara; Blilou, Ikram; Grieneisen, Verônica A.; Sozzani, Rosangela; Zamioudis, Christos; Miskolczi, Pál; Nieuwland, Jeroen; Benjamins, René; Dhonukshe, Pankaj; Caballero-Pérez, Juan; Horvath, Beatrix; Long, Yuchen; Mähönen, Ari Pekka; Zhang, Hongtao; Xu, Jian; Murray, James A.H.; Benfey, Philip N.; Bako, Laszlo; Marée, Athanasius F.M.; Scheres, Ben

2012-01-01

SUMMARY In plants, where cells cannot migrate, asymmetric cell divisions (ACDs) must be confined to the appropriate spatial context. We investigate tissue-generating asymmetric divisions in a stem cell daughter within the Arabidopsis root. Spatial restriction of these divisions requires physical binding of the stem cell regulator SCARECROW (SCR) by the RETINOBLASTOMA-RELATED (RBR) protein. In the stem cell niche, SCR activity is counteracted by phosphorylation of RBR through a cyclinD6;1-CDK complex. This cyclin is itself under transcriptional control of SCR and its partner SHORT ROOT (SHR), creating a robust bistable circuit with either high or low SHR-SCR complex activity. Auxin biases this circuit by promoting CYCD6;1 transcription. Mathematical modeling shows that ACDs are only switched on after integration of radial and longitudinal information, determined by SHR and auxin distribution, respectively. Coupling of cell-cycle progression to protein degradation resets the circuit, resulting in a “flip flop” that constrains asymmetric cell division to the stem cell region. PMID:22921914

Progress report - Physical Sciences, Physical Division 1993 July 1 -December 31

International Nuclear Information System (INIS)

Harvey, M.

1994-05-01

The progress report on the Physical Sciences, Physics Division, is split into Accelerator Physics and Neutron and Condensed Matter Science Branch. The Accelerator Physics Group in collaboration with Fuel Channel Components Branch has undertaken a unique series of experiments to prove the feasibility of using high energy electron beams for out-reactor irradiation of bulk samples of pressure-tube materials. The Neutron and Condensed Matter Branch, has among other topics, been involved with the Sudbury Neutrino Observatory project. It is part of an international collaboration including Canada, United States, and the United Kingdom. The project involves the use of heavy water to detect particles called neutrinos that are emitted from the centre of the sun and from exploding stars. Results from the Molecular Physics program include a study of the differing structures of ice grown in an electric field. Atomic Ordering in the new intermetallics Al 3 Ti-X was extensively investigated in the Materials Science program. In the theory program a code to calculate the multiphonon expansion of the incoherent scattering function was written and it was applied in the analysis of phonon density of states for amorphous and crystalline ice. Further calculations were made to develop improved understanding of superconductivity and a theory for the conductivity of vortex cores was proposed. 3 tabs., 15 figs

Progress report - Physical Sciences, Physical Division 1993 July 1 -December 31

Energy Technology Data Exchange (ETDEWEB)

Harvey, M

1994-05-01

The progress report on the Physical Sciences, Physics Division, is split into Accelerator Physics and Neutron and Condensed Matter Science Branch. The Accelerator Physics Group in collaboration with Fuel Channel Components Branch has undertaken a unique series of experiments to prove the feasibility of using high energy electron beams for out-reactor irradiation of bulk samples of pressure-tube materials. The Neutron and Condensed Matter Branch, has among other topics, been involved with the Sudbury Neutrino Observatory project. It is part of an international collaboration including Canada, United States, and the United Kingdom. The project involves the use of heavy water to detect particles called neutrinos that are emitted from the centre of the sun and from exploding stars. Results from the Molecular Physics program include a study of the differing structures of ice grown in an electric field. Atomic Ordering in the new intermetallics Al{sub 3} Ti-X was extensively investigated in the Materials Science program. In the theory program a code to calculate the multiphonon expansion of the incoherent scattering function was written and it was applied in the analysis of phonon density of states for amorphous and crystalline ice. Further calculations were made to develop improved understanding of superconductivity and a theory for the conductivity of vortex cores was proposed. 3 tabs., 15 figs.

Progress report of Environmental Assessment Division 1991-1994

International Nuclear Information System (INIS)

Sadasivan, S.; Nambi, K.S.V.

1994-01-01

The research and development (R and D) activities of Environmental Assessment Division during the period 1991-1994 are reported in the form of individual summaries arranged under the headings: 1) Studies on radioactivity measurements, 2) Dosimetry, 3) Epidemiological studies, 4) Aerosol studies, 5) Pollution monitoring systems, 6) Studies on trace constituents in the environment, and 7) Modelling studies. At the end of the report a list of publications including papers published in journals, presented at symposia, conferences etc., and published technical reports is given. (author)

Progress report of Environmental Assessment Division 1991-1994

Energy Technology Data Exchange (ETDEWEB)

Sadasivan, S; Nambi, K S.V. [comps.; Bhabha Atomic Research Centre, Bombay (India). Environmental Assessment Div.

1994-12-31

The research and development (R and D) activities of Environmental Assessment Division during the period 1991-1994 are reported in the form of individual summaries arranged under the headings: (1) Studies on radioactivity measurements, (2) Dosimetry, (3) Epidemiological studies, (4) Aerosol studies, (5) Pollution monitoring systems, (6) Studies on trace constituents in the environment, and (7) Modelling studies. At the end of the report a list of publications including papers published in journals, presented at symposia, conferences etc., and published technical reports is given. (author).

Asymmetric cell division and its role in cell fate determination in the ...

Indian Academy of Sciences (India)

Supplementary figure 1. Light micrograph of an asymmetrically dividing T. indica cell at various time intervals. Progress over a 12 hr period, showing that the larger component does not undergo further division. (A) 0 h, cell division at an early stage. (B) 5 h, lower half of cell undergoing further division. (C) 12 h, differentiated ...

Annual progress report for 1984 of Theoretical Physics Division

International Nuclear Information System (INIS)

Rastogi, B.P.; Menon, S.V.G.; Jain, R.P.

1985-01-01

This report presents a resume of the work done in the Theoretical Physics Division of the Bhabha Atomic Research Centre, Bombay, during the calendar year 1984. The report is divided into two parts, namely, Nuclear Technology and Mathematical Physics. The topics covered are described by brief summaries. A list of research publications and papers presented in symposia/workshops is also included. (author)

E-Division semiannual report. Progress report, July 1--December 31, 1978

Energy Technology Data Exchange (ETDEWEB)

Kelley, P.A. (comp.)

1979-01-01

The status of the programs and projects of the Electronics Division for the period July through December 1978 is reported. The presentation is divided into three sections: Research, Engineering Support, and Technical Services. Each of these sections presents the activities and accomplishments of the corresponding branch within the Division. The primary goal of the Research and Development branch is to advance technology for future applications. The primary goal of the Engineering Support Branch is to apply advanced technology to Laboratory and material problems. The primary goal of the Technical Services Branch is to provide a technical base and support for Laboratory programs. Most of the individual reports are quite short.

E-Division semiannual report. Progress report, July 1--December 31, 1978

International Nuclear Information System (INIS)

Kelley, P.A.

1979-01-01

The status of the programs and projects of the Electronics Division for the period July through December 1978 is reported. The presentation is divided into three sections: Research, Engineering Support, and Technical Services. Each of these sections presents the activities and accomplishments of the corresponding branch within the Division. The primary goal of the Research and Development branch is to advance technology for future applications. The primary goal of the Engineering Support Branch is to apply advanced technology to Laboratory and material problems. The primary goal of the Technical Services Branch is to provide a technical base and support for Laboratory programs. Most of the individual reports are quite short

Radiochemistry Division annual progress report for 1976

International Nuclear Information System (INIS)

Iyer, R.H.

1978-01-01

An account of the work done in the Radiochemistry Division of the Bhabha Atomic Research Centre, Bombay, during the calendar year 1976 is given. Some of the major highlights are: (1) development of a technique LEADTRAP using lead as a tracer for determination of total uranium and plutonium in the accountability tank in the fuel reprocessing plants, (2) fabrication of a compact unit of each gamma absorptiometer, the acidity monitor and the calorimeter for in-line monitoring of fuel reprocessing streams, (3) design and fabrication of an annular neutron counter, and (4) participation in the international intercomparison experiments PAFEX-II for the determination of plutonium in dissolver solutions and the processing of Ge(Li) gamma spectra, both organised by the IAEA. (M.G.B.)

Progress report, Health Sciences Division, 1 October - 31 December, 1981

International Nuclear Information System (INIS)

1982-03-01

The work of the Health Sciences Division during the quarter included development of improved radiation counters and dosimeters, studies of radionuclide migration through the environment, investigations of the effects of radiation upon a variety of living organisms, and calculation of improved dosimetry factors

Environmental and Medical Sciences Division progress report January - December 1975

International Nuclear Information System (INIS)

Johnston, J.E.

1976-07-01

The activities of the AERE Environmental and Medical Sciences Division for January to December 1975 are reported under sections entitled: introduction; inhalation toxicology and radionuclide analysis; whole body counting; radiation physics; environmental analysis, atmospheric pollution; medical; chemical analysis group; publications. (U.K.)

Environmental and Medical Sciences Division progress report January-December, 1976

International Nuclear Information System (INIS)

Hainge, W.M.

1977-05-01

The report falls under the following headings: introduction (a general survey of the research programme of the Division); inhalation studies and radionuclide analysis; whole body counting; radiation physics (including dosimetry, fallout, environmental analysis); atmospheric pollution; medical department; chemical analysis group; publications. (U.K.)

Metals and Ceramics Division progress report for period ending December 31, 1992

Energy Technology Data Exchange (ETDEWEB)

Craig, D.F.; Weir, J.R. Jr.

1993-04-01

This report provides a brief overview of the activities and accomplishments of the division, whose purpose is to provide technical support, primarily in the area of high-temperature materials, for the various technologies being developed by US DOE. Activities range from basic research to industrial research and technology transfer. The division (and the report) is divided into the following: Engineering materials, high-temperature materials, materials science, ceramics, nuclear fuel materials, program activities, collaborative research facilities and technology transfer, and educational programs.

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. |

Controlling myopia progression in children and adolescents

Directory of Open Access Journals (Sweden)

Smith MJ

2015-08-01

Full Text Available Molly J Smith, Jeffrey J WallineThe Ohio State University College of Optometry, Columbus, OH, USAAbstract: Myopia is a common disorder, affecting approximately one-third of the US population and over 90% of the population in some East Asian countries. High amounts of myopia are associated with an increased risk of sight-threatening problems, such as retinal detachment, choroidal degeneration, cataracts, and glaucoma. Slowing the progression of myopia could potentially benefit millions of children in the USA. To date, few strategies used for myopia control have proven to be effective. Treatment options such as undercorrection of myopia, gas permeable contact lenses, and bifocal or multifocal spectacles have all been proven to be ineffective for myopia control, although one recent randomized clinical trial using executive top bifocal spectacles on children with progressive myopia has shown to decrease the progression to nearly half of the control subjects. The most effective methods are the use of orthokeratology contact lenses, soft bifocal contact lenses, and topical pharmaceutical agents such as atropine or pirenzepine. Although none of these modalities are US Food and Drug Administration-approved to slow myopia progression, they have been shown to slow the progression by approximately 50% with few risks. Both orthokeratology and soft bifocal contact lenses have shown to slow myopia progression by slightly less than 50% in most studies. Parents and eye care practitioners should work together to determine which modality may be best suited for a particular child. Topical pharmaceutical agents such as anti-muscarinic eye drops typically lead to light sensitivity and poor near vision. The most effective myopia control is provided by atropine, but is rarely prescribed due to the side effects. Pirenzepine provides myopia control with little light sensitivity and few near-vision problems, but it is not yet commercially available as an eye drop or

Progress report of Applied Physics Division. July 1984 - June 1985

International Nuclear Information System (INIS)

2004-01-01

The activities of the Division during 1984/85 were again directed towards the general program objectives of the past two years. A shift in emphasis resulted in some organization changes. The increased importance of nuclear safeguards research in the Government's support for the International Atomic Energy Agency program has prompted a re-arrangement of the nuclear physics and science activities. Dr JR. Bird holds the responsibility for the Nuclear Science Section comprising the Nuclear Applications Group, Biomedical and Reactor Applications Group and the Neutron Scattering Group. The newly formed Safeguards and Nuclear Physics Section is headed by Dr J.W. Boldeman and includes the Safeguards Group and Nuclear Physics Group. The organization of the remainder of the Division is unchanged. The work on the electronic properties of hydrogen in silicon has been particularly rewarding and the plasma physics studies received recognition with an IAEA sponsored workshop on Compact Torus Research held in Sydney in March 1985 (author)

Progress report of Applied Physics Division. July 1984 - June 1985

Energy Technology Data Exchange (ETDEWEB)

NONE

2004-07-01

The activities of the Division during 1984/85 were again directed towards the general program objectives of the past two years. A shift in emphasis resulted in some organization changes. The increased importance of nuclear safeguards research in the Government's support for the International Atomic Energy Agency program has prompted a re-arrangement of the nuclear physics and science activities. Dr JR. Bird holds the responsibility for the Nuclear Science Section comprising the Nuclear Applications Group, Biomedical and Reactor Applications Group and the Neutron Scattering Group. The newly formed Safeguards and Nuclear Physics Section is headed by Dr J.W. Boldeman and includes the Safeguards Group and Nuclear Physics Group. The organization of the remainder of the Division is unchanged. The work on the electronic properties of hydrogen in silicon has been particularly rewarding and the plasma physics studies received recognition with an IAEA sponsored workshop on Compact Torus Research held in Sydney in March 1985 (author)

Spectroscopy Division : Annual progress report for 1973-74

International Nuclear Information System (INIS)

1974-01-01

Research and development activities (during 1973-74) of the Spectroscopy Division of the Bhabha Atomic Research Centre, Bombay are reviewed. From the point of view of nuclear science and technology, a special mention may be made of the following: (1) development of highly sensitive emission spectrographic methods for determination of boron in uranium and its compounds (ii) development of x-ray fluorescence analytic method for analysis of ZrO 2 , rare earths and thorium (iii) spectral studies of rare earth ions in crystals and (iv) development of isotopic analytical method for determining the abundances of boron isotopes. (M.G.B.)

BARC progress report - 1998

Energy Technology Data Exchange (ETDEWEB)

Kalyane, V L [comp.; Library and Information Services Div., Bhabha Atomic Research Centre, Mumbai (India)

1999-04-01

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) figs., tabs.

BARC progress report - 1998

International Nuclear Information System (INIS)

Kalyane, V.L.

1999-04-01

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)

BARC progress report - 1997

Energy Technology Data Exchange (ETDEWEB)

Kalyane, V L [comp.; Library and Information Services Div., Bhabha Atomic Research Centre, Mumbai (India)

1998-07-01

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) figs., tabs.

BARC progress report - 1997

International Nuclear Information System (INIS)

Kalyane, V.L.

1998-07-01

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)

Mammalian neurogenesis requires Treacle-Plk1 for precise control of spindle orientation, mitotic progression, and maintenance of neural progenitor cells.

Directory of Open Access Journals (Sweden)

Daisuke Sakai

Full Text Available The cerebral cortex is a specialized region of the brain that processes cognitive, motor, somatosensory, auditory, and visual functions. Its characteristic architecture and size is dependent upon the number of neurons generated during embryogenesis and has been postulated to be governed by symmetric versus asymmetric cell divisions, which mediate the balance between progenitor cell maintenance and neuron differentiation, respectively. The mechanistic importance of spindle orientation remains controversial, hence there is considerable interest in understanding how neural progenitor cell mitosis is controlled during neurogenesis. We discovered that Treacle, which is encoded by the Tcof1 gene, is a novel centrosome- and kinetochore-associated protein that is critical for spindle fidelity and mitotic progression. Tcof1/Treacle loss-of-function disrupts spindle orientation and cell cycle progression, which perturbs the maintenance, proliferation, and localization of neural progenitors during cortical neurogenesis. Consistent with this, Tcof1(+/- mice exhibit reduced brain size as a consequence of defects in neural progenitor maintenance. We determined that Treacle elicits its effect via a direct interaction with Polo-like kinase1 (Plk1, and furthermore we discovered novel in vivo roles for Plk1 in governing mitotic progression and spindle orientation in the developing mammalian cortex. Increased asymmetric cell division, however, did not promote increased neuronal differentiation. Collectively our research has therefore identified Treacle and Plk1 as novel in vivo regulators of spindle fidelity, mitotic progression, and proliferation in the maintenance and localization of neural progenitor cells. Together, Treacle and Plk1 are critically required for proper cortical neurogenesis, which has important implications in the regulation of mammalian brain size and the pathogenesis of congenital neurodevelopmental disorders such as microcephaly.

Progress report - physical sciences - physics division 1991 July 01 - December 31

International Nuclear Information System (INIS)

1992-05-01

The reports from the three branches in Physics Division, Accelerator Physics, Neutron and Solid State Physics and Theoretical Physics, are each presented in separate sections. Each section features a topical review, highlighting in this report the use of high-temperature rf and microwave response of materials, magnetic excitations in hexagonal ABX 3 materials, and meson exchange currents in nuclear beta decay. Noteworthy achievements in the Accelerator Physics program include the successful operation to design energy of the re-vaned RFQ1 accelerator enabling now an energy of 1250 keV. The ECR ion source has operated for greater than 75 hours without failure and has produced the 100 mA needed for the RFQ1 accelerator. The neutron scattering program was again hampered by the NRU Reactor being down for repair. The good news is that the reactor was brought back up to full power in December thus enabling experiments to begin again. Experiments earlier in the year were carried out at Oak Ridge (US), Riso (Denmark), National Institute for Standards and Technology (US) and the Rutherford-Appleton Laboratory (UK). A new high capacity, portable pumping system was commissioned replacing a fixed one that had become obsolete and allowing now greater use of environment control devices on all spectrometers. An analysis of double-charge exchange reactions in nuclei has been used to provide limits on the radius of the neutron halo in 11 Li. The most up-to-date, complete and accurate tables of neutron scattering lengths and cross-sections have been completed. Continuous quality improvement (CQI) analyses were initiated for all the activities in Physics Division with the goal to enhance performance and provide better service to our many customers

Engineering Physics Division progress report for period ending November 30, 1978

International Nuclear Information System (INIS)

Maienschein, F.C.

1979-01-01

Research and other activities of the Engineering Physics Division (formerly Neutron Physics Division) of ORNL during the period February 28, 1977 to November 30, 1978, are reported. The format is that of abstracts and summaries of prepared papers. Work is summarized in the following general areas: measurements of neutron cross sections and related quantities; cross-section theory, evaluations, and evaluation techniques; cross-section processing, testing, and sensitivity analyses; integral experiments and their analyses; development of methods for shield and reactor analyses; analyses for specific systems or applications (liquid-metal fast breeder reactor program, gas-cooled reactor program, alternate fuel cycle program, magnetic fusion energy program, high-energy physics program, accelerator breeding studies, miscellaneous studies); and information analysis and distribution. Overviews of each of these areas are included

Translational Control of Cell Division by Elongator

Directory of Open Access Journals (Sweden)

Fanelie Bauer

2012-05-01

Full Text Available Elongator is required for the synthesis of the mcm5s2 modification found on tRNAs recognizing AA-ending codons. In order to obtain a global picture of the role of Elongator in translation, we used reverse protein arrays to screen the fission yeast proteome for translation defects. Unexpectedly, this revealed that Elongator inactivation mainly affected three specific functional groups including proteins implicated in cell division. The absence of Elongator results in a delay in mitosis onset and cytokinesis defects. We demonstrate that the kinase Cdr2, which is a central regulator of mitosis and cytokinesis, is under translational control by Elongator due to the Lysine codon usage bias of the cdr2 coding sequence. These findings uncover a mechanism by which the codon usage, coupled to tRNA modifications, fundamentally contributes to gene expression and cellular functions.

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

International Nuclear Information System (INIS)

Ramamurthi, S.S.; Chaudhry, Ramesh

1985-01-01

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.)

Time-division-multiplex control scheme for voltage multiplier rectifiers

Directory of Open Access Journals (Sweden)

Bin-Han Liu

2017-03-01

Full Text Available A voltage multiplier rectifier with a novel time-division-multiplexing (TDM control scheme for high step-up converters is proposed in this study. In the proposed TDM control scheme, two full-wave voltage doubler rectifiers can be combined to realise a voltage quadrupler rectifier. The proposed voltage quadrupler rectifier can reduce transformer turn ratio and transformer size for high step-up converters and also reduce voltage stress for the output capacitors and rectifier diodes. An N-times voltage rectifier can be straightforwardly produced by extending the concepts from the proposed TDM control scheme. A phase-shift full-bridge (PSFB converter is adopted in the primary side of the proposed voltage quadrupler rectifier to construct a PSFB quadrupler converter. Experimental results for the PSFB quadrupler converter demonstrate the performance of the proposed TDM control scheme for voltage quadrupler rectifiers. An 8-times voltage rectifier is simulated to determine the validity of extending the proposed TDM control scheme to realise an N-times voltage rectifier. Experimental and simulation results show that the proposed TDM control scheme has great potential to be used in high step-up converters.

Characterization of dependencies between growth and division in budding yeast.

Science.gov (United States)

Mayhew, Michael B; Iversen, Edwin S; Hartemink, Alexander J

2017-02-01

Cell growth and division are processes vital to the proliferation and development of life. Coordination between these two processes has been recognized for decades in a variety of organisms. In the budding yeast Saccharomyces cerevisiae , this coordination or 'size control' appears as an inverse correlation between cell size and the rate of cell-cycle progression, routinely observed in G 1 prior to cell division commitment. Beyond this point, cells are presumed to complete S/G 2 /M at similar rates and in a size-independent manner. As such, studies of dependence between growth and division have focused on G 1 Moreover, in unicellular organisms, coordination between growth and division has commonly been analysed within the cycle of a single cell without accounting for correlations in growth and division characteristics between cycles of related cells. In a comprehensive analysis of three published time-lapse microscopy datasets, we analyse both intra- and inter-cycle dependencies between growth and division, revisiting assumptions about the coordination between these two processes. Interestingly, we find evidence (i) that S/G 2 /M durations are systematically longer in daughters than in mothers, (ii) of dependencies between S/G 2 /M and size at budding that echo the classical G 1 dependencies, and (iii) in contrast with recent bacterial studies, of negative dependencies between size at birth and size accumulated during the cell cycle. In addition, we develop a novel hierarchical model to uncover inter-cycle dependencies, and we find evidence for such dependencies in cells growing in sugar-poor environments. Our analysis highlights the need for experimentalists and modellers to account for new sources of cell-to-cell variation in growth and division, and our model provides a formal statistical framework for the continued study of dependencies between biological processes. © 2017 The Author(s).

Environmental Sciences Division. Annual progress report for period ending September 30, 1980

International Nuclear Information System (INIS)

Auerbach, S.I.; Reichle, D.E.

1981-03-01

Research conducted in the Environmental Sciences Division for the Fiscal Year 1980 included studies carried out in the following Division programs and sections: (1) Advanced Fossil Energy Program, (2) Nuclear Program, (3) Environmental Impact Program, (4) Ecosystem Studies Program, (5) Low-Level Waste Research and Development Program, (6) National Low-Level Waste Program, (7) Aquatic Ecology Section, (8) Environmental Resources Section, (9) Earth Sciences Section, and (10) Terrestrial Ecology Section. In addition, Educational Activities and the dedication of the Oak Ridge National Environmental Research Park are reported. Separate abstracts were prepared for the 10 sections of this report

Activity report of Reactor Physics Division - 1988

International Nuclear Information System (INIS)

Keshavamurthy, R.S.

1989-01-01

This report highlights the progress of activities carried out during the year 1988 in Reactor Physics Division in the form of brief summaries. The topics are organised under the following subject categories:(1) nuclear data evaluation , processing and validation, (2) core physics and analysis, (3) reactor kinetics and safety analysis, (4) noise analysis and (5) radiation transport and shielding. List of publications by the members of the Division and the Reactor Physics Seminars held during the year 1988, is included at the end of report. (author). refs., figs., tabs

Progress report of Environmental Assessment Division: 1995-1997

Energy Technology Data Exchange (ETDEWEB)

Nair, P V.N.; Nambi, K S.V. [comps.; Environmental Assessment Division, Bhabha Atomic Research Centre, Mumbai (India)

1998-08-01

The research and development (R and D) activities of Environmental Assessment Division during the period 1995 - 1997 are reported in the form of individual summaries arranged under the headings: 1) Studies on Radioactivity Measurements 2) Internal Dosimetry Studies 3) Epidemiological Studies 4) Aerosol Studies 5) Pollution Monitoring Systems 6) Studies on Trace Constituents in the Environment 7) Modelling Studies 8) Radiological Safety Assessment and 9) Dating Studies. At the end of the report, list of publications including papers published in journals, papers in symposium proceedings, papers in bulletins/newsletters and reports and summaries of Ph.D. theses completed during the period are given. (author)

HISTORY OF THE ENGINEERING PHYSICS AND MATHEMATICS DIVISION 1955-1993

Energy Technology Data Exchange (ETDEWEB)

Maskewitz, B.F.

2001-09-14

A review of division progress reports noting significant events and findings of the Applied Nuclear Physics, Neutron Physics, Engineering Physics, and then Engineering Physics and Mathematics divisions from 1955 to 1993 was prepared for use in developing a history of the Oak Ridge National Laboratory in celebration of its 50th year. The research resulted in an accumulation of historic material and photographs covering 38 years of effort, and the decision was made to publish a brief history of the division. The history begins with a detailed account of the founding of the Applied Nuclear Physics Division in 1955 and continues through the name change to the Neutron Physics Division in the late 1950s. The material thereafter is presented in decades--the sixties, seventies, and eighties--and ends as we enter the nineties.

Spectroscopy Division: progress report for January 1989-December 1989

International Nuclear Information System (INIS)

Sharma, A.; Marathe, S.M.

1990-01-01

Research and development activities of the Spectroscopy Division during the calendar year 1989 are reported in the form of individual summaries which are grouped under the headings entitled: (i)analysis by optical emission spectroscopy, inductively coupled plasma atomic emission spectrometry and x-ray fluroescence techniques, (ii)atomic, molecular, solid state and laser-spectroscopy, (iii)optics and thin films, (iv)electronics, (v)fabrication, (vi)publications, and (vii)other academic activities. A divisional staff chart is given at the end. (author). figs., tabs

E-Division semiannual report. Progress report, June 1--December 31, 1977

International Nuclear Information System (INIS)

Kelley, P.A.

1978-03-01

The status of the programs and projects of the Electronics Division is reported for the period of June through December 1977. The presentation is divided into three sections: Research, Engineering Support, and Technical Services. Each of these sections presents the activities and accomplishments of the corresponding branch within the Division. The primary goal of the Research and Development branch is to advance technology for future applications. The primary goal of the Engineering Support branch is to apply advanced technology to laboratory and material problems. The primary goal of the Technical Services branch is to provide a technical base and support for Laboratory programs. These goals are reflected in this report. Among the subject areas included are the following: radiation detectors, temperature monitoring, electromagnetic probing, Josephson junction switching devices, fiber optics, high-temperature electronics, HVAC systems, microprocessors, fuel cell-powered vehicles, laser fusion

Instrumentation and Controls Division, Technical Support Department Management Plan, FY 1993--FY 1996

Energy Technology Data Exchange (ETDEWEB)

Adkisson, B.P.; Kunselman, C.W.; Effler, R.P.; Miller, D.R.; Millet, A.J.; Stansberry, C.T.

1993-08-01

This report describes the organization, key functions, and major activities of the Technical Support Department The Department is the programmatic support element of the Instrumentation and Controls Division. The Department`s primary focus is the support of existing equipment and systems at Oak Ridge National Laboratory that are generally characterized as instrumentation and controls. The support takes the form of repair, calibration, fabrication, field engineering, preventive maintenance, software support, and record keeping.

Molecular Programs Underlying Asymmetric Stem Cell Division and Their Disruption in Malignancy.

Science.gov (United States)

Mukherjee, Subhas; Brat, Daniel J

2017-01-01

Asymmetric division of stem cells is a highly conserved and tightly regulated process by which a single stem cell produces two unequal daughter cells. One retains its stem cell identity while the other becomes specialized through a differentiation program and loses stem cell properties. Coordinating these events requires control over numerous intra- and extracellular biological processes and signaling networks. In the initial stages, critical events include the compartmentalization of fate determining proteins within the mother cell and their subsequent passage to the appropriate daughter cell in order to direct their destiny. Disturbance of these events results in an altered dynamic of self-renewing and differentiation within the cell population, which is highly relevant to the growth and progression of cancer. Other critical events include proper asymmetric spindle assembly, extrinsic regulation through micro-environmental cues, and non-canonical signaling networks that impact cell division and fate determination. In this review, we discuss mechanisms that maintain the delicate balance of asymmetric cell division in normal tissues and describe the current understanding how some of these mechanisms are deregulated in cancer.

Progress at LAMPF. Clinton P. Anderson Meson Physics Facility, July-December 1981

International Nuclear Information System (INIS)

Allred, J.C.

1982-03-01

Progress at LAMPF is the semiannual progress report of the MP Division of the Los Alamos National Laboratory. The report includes brief reports on research done at LAMPF by researchers from other institutions and Los Alamos divisions

Progress report for 1978-79, Technical Physics Division

International Nuclear Information System (INIS)

Gopalaraman, C.P.; Deshpande, R.Y.

1980-01-01

The research and development activities of the Technical Physics Division (TPD) of the Bhabha Atomic Research Centre, Bombay, during the calendar years 1978 and 1979 are reported. The TPD's major areas of work are electronics instrumentation, crystal technology, mass spectrometers, cryogenic equipment and vacuum equipment. Some of the major achievements are: (1) fabrication of various electronic instruments and components for the pulsed nuclear magnetic resonance spectrometers, (2) growth of large size NaI(Tl) and Ge crystals, (3) growth of CsI, KDP and arsenic selenide crystals, (4) fabrication of quadrupole mass filters and (5) fabrication of mass spectrometers for gas analysis and D/H analysis in water samples. (M.G.B.)

Fusion energy division computer systems network

International Nuclear Information System (INIS)

Hammons, C.E.

1980-12-01

The Fusion Energy Division of the Oak Ridge National Laboratory (ORNL) operated by Union Carbide Corporation Nuclear Division (UCC-ND) is primarily involved in the investigation of problems related to the use of controlled thermonuclear fusion as an energy source. The Fusion Energy Division supports investigations of experimental fusion devices and related fusion theory. This memo provides a brief overview of the computing environment in the Fusion Energy Division and the computing support provided to the experimental effort and theory research

Rho proteins − the key regulators of cytoskeleton in the progression of mitosis and cytokinesis

Directory of Open Access Journals (Sweden)

Anna Klimaszewska

2011-11-01

Full Text Available The Rho proteins are members of the Ras superfamily of small GTPases. They are thought to be crucial regulators of multiple signal transduction pathways that influence a wide range of cellular functions, including migration, membrane trafficking, adhesion, polarity and cell shape changes. Thanks to their ability to control the assembly and organization of the actin and microtubule cytoskeletons, Rho GTPases are known to regulate mitosis and cytokinesis progression. These proteins are required for formation and rigidity of the cortex during mitotic cell rounding, mitotic spindle formation and attachment of the spindle microtubules to the kinetochore. In addition, during cytokinesis, they are involved in promoting division plane determination, contractile ring and cleavage furrow formation and abscission. They are also known as regulators of cell cycle progression at the G1/S and G2/M transition. Thus, the signal transduction pathways in which Rho proteins participate, appear to connect dynamics of actin and microtubule cytoskeletons to cell cycle progression. We review the current state of knowledge concerning the molecular mechanisms by which Rho GTPase signaling regulates remodeling of actin and microtubule cytoskeletons in order to control cell division progression.

Service activities of chemical analysis division

International Nuclear Information System (INIS)

Eom, Tae Yoon; Suh, Moo Yul; Park, Kyoung Kyun; Jung, Ki Suk; Joe, Kih Soo; Jee, Kwang Yong; Jung, Woo Sik; Sohn, Se Chul; Yeo, In Heong; Han, Sun Ho

1988-12-01

Progress of the Division during the year of 1988 was described on the service activities for various R and D projects carrying out in the Institute, for the fuel fabrication and conversion plant, and for the post-irradiation examination facility. Relevant analytical methodologies developed for the chemical analysis of an irradiated fuel, safeguards chemical analysis, and pool water monitoring were included such as chromatographic separation of lanthanides, polarographic determination of dissolved oxygen in water, and automation on potentiometric titration of uranium. Some of the laboratory manuals revised were also included in this progress report. (Author)

OSD1 promotes meiotic progression via APC/C inhibition and forms a regulatory network with TDM and CYCA1;2/TAM.

Science.gov (United States)

Cromer, Laurence; Heyman, Jefri; Touati, Sandra; Harashima, Hirofumi; Araou, Emilie; Girard, Chloe; Horlow, Christine; Wassmann, Katja; Schnittger, Arp; De Veylder, Lieven; Mercier, Raphael

2012-01-01

Cell cycle control is modified at meiosis compared to mitosis, because two divisions follow a single DNA replication event. Cyclin-dependent kinases (CDKs) promote progression through both meiosis and mitosis, and a central regulator of their activity is the APC/C (Anaphase Promoting Complex/Cyclosome) that is especially required for exit from mitosis. We have shown previously that OSD1 is involved in entry into both meiosis I and meiosis II in Arabidopsis thaliana; however, the molecular mechanism by which OSD1 controls these transitions has remained unclear. Here we show that OSD1 promotes meiotic progression through APC/C inhibition. Next, we explored the functional relationships between OSD1 and the genes known to control meiotic cell cycle transitions in Arabidopsis. Like osd1, cyca1;2/tam mutation leads to a premature exit from meiosis after the first division, while tdm mutants perform an aberrant third meiotic division after normal meiosis I and II. Remarkably, while tdm is epistatic to tam, osd1 is epistatic to tdm. We further show that the expression of a non-destructible CYCA1;2/TAM provokes, like tdm, the entry into a third meiotic division. Finally, we show that CYCA1;2/TAM forms an active complex with CDKA;1 that can phosphorylate OSD1 in vitro. We thus propose that a functional network composed of OSD1, CYCA1;2/TAM, and TDM controls three key steps of meiotic progression, in which OSD1 is a meiotic APC/C inhibitor.

Progress report: Physics Division, 1982 January 1 to March 1

International Nuclear Information System (INIS)

1982-05-01

The work of the Physics Division at Chalk River Nuclear Laboratories during the quarter is presented. Areas of interest include nuclear physics, neutron sources, the development of a superconducting cyclotron, high current proton accelerators and electron accelerators, diffraction studies and other solid state physics work in organic and inorganic substances, and computer codes. The operation of the MP tandem accelerator and the computer facilities is reviewed

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

International Nuclear Information System (INIS)

Ryan, R.R.

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

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.

Solid State Division progress report for period ending March 31, 1992

International Nuclear Information System (INIS)

Green, P.H.; Hinton, L.W.

1992-09-01

During this period, the division conducted a broad, interdisciplinary materials research program with emphasis on theoretical solid state physics, superconductivity, neutron scattering, synthesis and characterization of materials, ion beam and laser processing, and the structure of solids and surfaces. The High Flux Isotope Reactor was returned to full operation

Solid State Division progress report for period ending March 31, 1992

Energy Technology Data Exchange (ETDEWEB)

Green, P.H.; Hinton, L.W. (eds.)

1992-09-01

During this period, the division conducted a broad, interdisciplinary materials research program with emphasis on theoretical solid state physics, superconductivity, neutron scattering, synthesis and characterization of materials, ion beam and laser processing, and the structure of solids and surfaces. The High Flux Isotope Reactor was returned to full operation.

Solid State Division: Progress report for period ending September 30, 1987

Energy Technology Data Exchange (ETDEWEB)

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

1988-03-01

This paper contains a collection of articles on research done at the Solid State Division of ORNL. General topics covered are: theoretical solid state physics; neutron scattering; physical properties of superconductors and ceramics; synthesis and characterization of solids; ion beam and laser processing; and surface and defect studies. (LSP)

Solid State Division: Progress report for period ending September 30, 1987

International Nuclear Information System (INIS)

Green, P.H.; Watson, D.M.

1988-03-01

This paper contains a collection of articles on research done at the Solid State Division of ORNL. General topics covered are: theoretical solid state physics; neutron scattering; physical properties of superconductors and ceramics; synthesis and characterization of solids; ion beam and laser processing; and surface and defect studies

Annual progress report for 1985 of Theoretical Physics Division

International Nuclear Information System (INIS)

Rastogi, B.P.

1986-01-01

This report presents a resume of the work done in the Theoretical Physics Division during the calender year, 1985. The topics covered are described by their brief summaries. The main fields of the work were : (a) physics design of the 500 MWe PHWR and related developmental studies, (b) reactor physics work related to Rajasthan, Narora and Tarapur stations, (c) laser fusion studies, (d) mathematical physics studies on Monte-Carlo method, transport equation and Fokker-Planck Equation and (e) theoretical physics studies related to Feynman path integrals and quantum optics. The lists of research publications and Trombay Colloquia organised are also appended. (author)

Temporal controls of the asymmetric cell division cycle in Caulobacter crescentus.

Directory of Open Access Journals (Sweden)

Shenghua Li

2009-08-01

Full Text Available The asymmetric cell division cycle of Caulobacter crescentus is orchestrated by an elaborate gene-protein regulatory network, centered on three major control proteins, DnaA, GcrA and CtrA. The regulatory network is cast into a quantitative computational model to investigate in a systematic fashion how these three proteins control the relevant genetic, biochemical and physiological properties of proliferating bacteria. Different controls for both swarmer and stalked cell cycles are represented in the mathematical scheme. The model is validated against observed phenotypes of wild-type cells and relevant mutants, and it predicts the phenotypes of novel mutants and of known mutants under novel experimental conditions. Because the cell cycle control proteins of Caulobacter are conserved across many species of alpha-proteobacteria, the model we are proposing here may be applicable to other genera of importance to agriculture and medicine (e.g., Rhizobium, Brucella.

Temporal controls of the asymmetric cell division cycle in Caulobacter crescentus.

Science.gov (United States)

Li, Shenghua; Brazhnik, Paul; Sobral, Bruno; Tyson, John J

2009-08-01

The asymmetric cell division cycle of Caulobacter crescentus is orchestrated by an elaborate gene-protein regulatory network, centered on three major control proteins, DnaA, GcrA and CtrA. The regulatory network is cast into a quantitative computational model to investigate in a systematic fashion how these three proteins control the relevant genetic, biochemical and physiological properties of proliferating bacteria. Different controls for both swarmer and stalked cell cycles are represented in the mathematical scheme. The model is validated against observed phenotypes of wild-type cells and relevant mutants, and it predicts the phenotypes of novel mutants and of known mutants under novel experimental conditions. Because the cell cycle control proteins of Caulobacter are conserved across many species of alpha-proteobacteria, the model we are proposing here may be applicable to other genera of importance to agriculture and medicine (e.g., Rhizobium, Brucella).

Engineering Physics Division progress report for period ending November 30, 1978. [ORNL

Energy Technology Data Exchange (ETDEWEB)

Maienschein, F.C.

1979-01-01

Research and other activities of the Engineering Physics Division (formerly Neutron Physics Division) of ORNL during the period February 28, 1977 to November 30, 1978, are reported. The format is that of abstracts and summaries of prepared papers. Work is summarized in the following general areas: measurements of neutron cross sections and related quantities; cross-section theory, evaluations, and evaluation techniques; cross-section processing, testing, and sensitivity analyses; integral experiments and their analyses; development of methods for shield and reactor analyses; analyses for specific systems or applications (liquid-metal fast breeder reactor program, gas-cooled reactor program, alternate fuel cycle program, magnetic fusion energy program, high-energy physics program, accelerator breeding studies, miscellaneous studies); and information analysis and distribution. Overviews of each of these areas are included. (RWR)

2014 News Articles | 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.

2018 News Articles | 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.

2013 News Articles | 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.

Materials Science Division activity report 1991-1993

International Nuclear Information System (INIS)

Amarendra, G.; Tiwari, A.M.; Subramanian, N.; Venugopal Rao, G.

1995-01-01

This progress report gives an account of the various research and developmental activities carried out at the Materials Science Division of the Indira Gandhi Centre for Atomic Research, Kalpakkam during 1991-93. It also gives a summary of the results of the research activities, describes the experimental facilities and also list the publications

Nutritional Science Staff | 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.

Health and Safety Research Division progress report for period ending April 30, 1978

Energy Technology Data Exchange (ETDEWEB)

Kaye, S.V.

1978-08-01

The research goal of the Health and Safety Research Division is to conduct basic and applied research that contributes new scientific knowledge with emphasis in biophysical areas that lead to a better understanding of how alternative energy-related technologies affect man. Included in the basic research are fundamental processes that are important to understand formation, mobility, toxicity, detection, and characterization of pollutants. The applied research includes the integration of data from basic and applied studies through development of concepts and methodologies that can be used for energy-related assessments with primary focus on the health and safety of man. The division has no responsibilities for on-site health and safety.

Progress at LAMPF, Clinton P. Anderson Meson Physics Facility, January-December 1984

International Nuclear Information System (INIS)

Allred, J.C.

1985-04-01

Progress at LAMPF is the annual progress report of the MP Division of the Los Alamos National Laboratory. The report includes brief reports on research done at LAMPF by researchers from other institutions and Los Alamos divisions. Abstracts of separate sections of the report were prepared separately for the data base

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.

Radiochemistry Division: annual progress report for 1980

International Nuclear Information System (INIS)

Jayadevan, N.C.; Manohar, S.B.

1982-01-01

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)O 2 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 138 Xe, 139 Cs, 252 Cf and 229 Th, (5) measuring of gamma ray abundance of 229 Th 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.)

Progress report 1979

International Nuclear Information System (INIS)

1980-12-01

This progress report deals with service oriented work performed at the AAEC Research Establishment in the twelve month period ending September 30, 1979. Services provided by the Engineering Services Division, the Safety Department, Site Information Services Department and Commercial Applications are described

Nuclear Technology Division annual progress report for period ending June 30, 1974

International Nuclear Information System (INIS)

1975-01-01

Abstracts of research projects are presented concerning nuclear properties, general reactor development and support, test reactor operations support, LOFT support, PBF support, FEFPL support, TRSP support, techniques and instrumentation, non-nuclear energy sources, and related activities of division personnel. (U.S.)

Safety research programs sponsored by Office of Nuclear Regulatory Research: Progress report, January 1--June 30, 1988

Energy Technology Data Exchange (ETDEWEB)

Baum, J W; Boccio, J L; Diamond, D; Fitzpatrick, R; Ginsberg, T; Greene, G A; Guppy, J G; Hall, R E; Higgins, J C; Weiss, A J [comp.

1988-12-01

This progress report describes current activities and technical progress in the programs at Brookhaven National Laboratory sponsored by the Division of Regulatory Applications, Division of Engineering, Division of Safety Issue Resolution, and Division of Systems Research of the US Nuclear Regulatory Commission, Office of Nuclear Regulatory Research following the reorganization in July 1988. The previous reports have covered the period October 1, 1976 through December 31, 1987.

Safety research programs sponsored by Office of Nuclear Regulatory Research: Progress report, October 1--December 31, 1988

Energy Technology Data Exchange (ETDEWEB)

Weiss, A J; Azarm, A; Baum, J W; Boccio, J L; Carew, J; Diamond, D J; Fitzpatrick, R; Ginsberg, T; Greene, G A; Guppy, J G; Haber, S B

1989-07-01

This progress report describes current activities and technical progress in the programs at Brookhaven National Laboratory sponsored by the Division of Regulatory Applications, Division of Engineering, Division of Safety Issue Resolution, and Division of Systems Research of the US Nuclear Regulatory Commission, Office of Nuclear Regulatory Research following the reorganization in July 1988. The previous reports have covered the period October 1, 1976 through September 30, 1988.

Safety research programs sponsored by Office of Nuclear Regulatory Research: Progress report, January 1--June 30, 1988

International Nuclear Information System (INIS)

Baum, J.W.; Boccio, J.L.; Diamond, D.

1988-12-01

This progress report describes current activities and technical progress in the programs at Brookhaven National Laboratory sponsored by the Division of Regulatory Applications, Division of Engineering, Division of Safety Issue Resolution, and Division of Systems Research of the US Nuclear Regulatory Commission, Office of Nuclear Regulatory Research following the reorganization in July 1988. The previous reports have covered the period October 1, 1976 through December 31, 1987

Cell cycle related /sup 125/IUDR-induced-division delay

International Nuclear Information System (INIS)

Scheniderman, M.H.; Hofer, K.G.

1987-01-01

A series of experiments were run to determine if /sup 125/I-decays, in /sup 125/IUdR labeled DNA, specifically accumulated at 1, 3, 5, 7 and 9 hours after plating labeled mitotic cells caused a change in the rate or time of cell entry into mitosis. To accomplish this, a pool of labeled mitotic cells was selected in mitosis and plated in replicate flasks. /sup 125/I decays were accumulated in groups of cells by cooling (4 0 C) for 2 hours starting at the designated times. After rewarding, colcemid was added to arrest cells in mitosis. The rate of cell progression into mitosis for each cell cycle time of accumulation was determined by scoring the mitotic index of cells sampled as a function of time after addition of the colcemid. The results are summarized: (1) Decays from /sup 125/I in /sup 125/I(UdR) labeled DNA reduced the rate of cell progression into mitosis and delayed the time of initiation of mitosis. (2) The reduced rate of progression and the delayed time of initiation of mitosis were independent of the cell cycle time that /sup 125/I-decays were accumulated. (3) The reduced rate of progression after cell cycle accumulation of /sup 125/I decay was statistically indistinguishable from the corresponding controls. (4) The delayed initiation of mitosis after specific cell cycle accumulation of /sup 125/I- decays was greater than the corresponding control. The relationship of these data to DNA and non-DNA division delay target(s) is emphasized

UKAEA Government Division Annual Review 1994-95

International Nuclear Information System (INIS)

1995-01-01

This is the first annual review of the United Kingdom Atomic Energy Authority (UKAEA) Government Division. The Division was set up in April 1994 with the primary responsibility of completing the UKAEA's nuclear mission by caring for and decommissioning the radioactive facilities used in pursuit of the national nuclear programme over the past 50 years; this includes the safe disposal of the resulting radioactive waste. The progress made in the first year towards carrying out this responsibility at the lowest cost while continuing to ensure safety and protection of the environment is reported. Other responsibilities of Government Division which are reviewed include: management of the UKAEA's sites, buildings and operating facilities; oversight of the United Kingdom fusion research programme and provision for the Joint European Torus which is situated next to the Culham fusion site; and the UKAEA Constabulary. Appended to the review are a financial statement and a list of the main decommissioning tasks. (UK)

Analytical Chemistry Division : annual report (for) 1985

International Nuclear Information System (INIS)

Mahadevan, N.

1986-01-01

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.)

Physics division annual report - 1999

International Nuclear Information System (INIS)

Thayer, K.

2000-01-01

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

The Maryland Division of Correction hospice program.

Science.gov (United States)

Boyle, Barbara A

2002-10-01

The Maryland Division of Correction houses 24,000 inmates in 27 geographically disparate facilities. The inmate population increasingly includes a frail, elderly component, as well as many inmates with chronic or progressive diseases. The Division houses about 900 human immunodeficiency virus (HIV)-positive detainees, almost one quarter with an acquired immune deficiency syndrome (AIDS) diagnosis. A Ryan White Special Project of National Significance (SPNS) grant and the interest of a community hospice helped transform prison hospice from idea to reality. One site is operational and a second site is due to open in the future. Both facilities serve only male inmates, who comprise more than 95% of Maryland's incarcerated. "Medical parole" is still the preferred course for terminally ill inmates; a number have been sent to various local community inpatient hospices or released to the care of their families. There will always be some who cannot be medically paroled, for whom hospice is appropriate. Maryland's prison hospice program requires a prognosis of 6 months or less to live, a do-not-resuscitate (DNR) order and patient consent. At times, the latter two of these have been problematic. Maintaining the best balance between security requirements and hospice services to dying inmates takes continual communication, coordination and cooperation. Significant complications in some areas remain: visitation to dying inmates by family and fellow prisoners; meeting special dietary requirements; what role, if any, will be played by inmate volunteers. Hospice in Maryland's Division of Correction is a work in progress.

Safety research programs sponsored by Office of Nuclear Regulatory Research: Progress report, July 1--September 30, 1988

Energy Technology Data Exchange (ETDEWEB)

Weiss, A J [comp.

1989-02-01

This progress report describes current activities and technical progress in the programs at Brookhaven National Laboratory sponsored by the Division of Regulatory Applications, Division of Engineering, Division of Safety Issue Resolution, and Division of Systems of the US Nuclear Regulatory Commission, Office of Nuclear Regulatory Research following the reorganization in July 1988. The previous reports have covered the period October 1, 1976 through June 30, 1988. 71 figs., 24 tabs.

Safety research programs sponsored by Office of Nuclear Regulatory Research: Progress report, July 1--September 30, 1988

International Nuclear Information System (INIS)

Weiss, A.J.

1989-02-01

This progress report describes current activities and technical progress in the programs at Brookhaven National Laboratory sponsored by the Division of Regulatory Applications, Division of Engineering, Division of Safety Issue Resolution, and Division of Systems of the US Nuclear Regulatory Commission, Office of Nuclear Regulatory Research following the reorganization in July 1988. The previous reports have covered the period October 1, 1976 through June 30, 1988. 71 figs., 24 tabs

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

International Nuclear Information System (INIS)

1984-08-01

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

Engineering Physics Division progress report for period ending November 30, 1980

Energy Technology Data Exchange (ETDEWEB)

1980-12-01

Separate abstracts are included for sections concerning measurement of nuclear cross sections and related quantities; nuclear cross-section evaluations and theory; nuclear cross-section processing, testing, and sensitivity analysis; engineering physics division integral experiments and their analyses; development of methods for shield and reactor analysis; analyses for specific systems or applications; energy model validation; systems reliability and operations research; and information analysis and distribution.

Engineering Physics Division progress report for period ending November 30, 1980

International Nuclear Information System (INIS)

1980-12-01

Separate abstracts are included for sections concerning measurement of nuclear cross sections and related quantities; nuclear cross-section evaluations and theory; nuclear cross-section processing, testing, and sensitivity analysis; engineering physics division integral experiments and their analyses; development of methods for shield and reactor analysis; analyses for specific systems or applications; energy model validation; systems reliability and operations research; and information analysis and distribution

Modification of radiation-induced division delay by caffeine analogues and dibutyryl cyclic AMP

Energy Technology Data Exchange (ETDEWEB)

Kimler, B.F.; Leeper, D.B.; Snyder, M.H.; Rowley, R.; Schneiderman, M.H. (Thomas Jefferson Univ., Philadelphia, PA (USA). Hospital)

1982-01-01

The mitotic selection procedure for cell cycle analysis was utilized to investigate the concentration-dependent modification of x-radiation-induced division delay in Chinese hamster ovary (CHO) cells by methyl xanthines (caffeine, theophylline, and theobromine) and by dibutyryl cyclic AMP. The methyl xanthines (concentrations from 0.5 to 1000 ..mu..g/ml) all reduced radiation-induced division delay with the effect being linear between approximately 100 and 1000 ..mu..g/ml. After doses of 100-300 rad, delay was reduced by 75, 94 or 83 per cent at 1000 ..mu..g/ml for each drug, respectively. However, the addition of dibutyryl cyclic AMP had an opposite effect: radiation-induced delay was increased by the concentration range of 0.3 to 300 ..mu..g/ml. These results indicate that in mammalian cells the control of cell cycle progression and the modification of radiation-induced division delay are not simply related to intracellular levels of cyclic AMP. Rather, there appear to be at least two competing mechanisms which are differentially affected by caffeine analogues or by direct addition of dibutyryl cyclic AMP. The direct effect of caffeine and the methyl xanthines on membrane calcium permeability is considered.

Modification of radiation-induced division delay by caffeine analogues and dibutyryl cyclic AMP

International Nuclear Information System (INIS)

Kimler, B.F.; Leeper, D.B.; Snyder, M.H.; Rowley, R.; SChneiderman, M.H.

1982-01-01

The mitotic selection procedure for cell cycle analysis was utilized to investigate the concentration-dependent modification of x-radiation-induced division delay in Chinese hamster ovary (CHO) cells by methyl xanthines (caffeine, theophylline, and theobromine) and by dibutyryl cyclic AMP. The methyl xanthines (concentrations from 0.5 to 1000 μg/ml) all reduced radiation-induced division delay with the effect being linear between approximately 100 and 1000 μg/ml. After doses of 100-300 rad, delay was reduced by 75, 94 or 83 per cent at 1000 μg/ml for each drug, respectively. However, the addition of dibutyryl cyclic AMP had an opposite effect: radiation-induced delay was increased by the concentration range of 0.3 to 300 μg/ml. These results indicate that in mammalian cells the control of cell cycle progression and the modification of radiation-induced division delay are not simply related to intracellular levels of cyclic AMP. Rather, there appear to be at least two competing mechanisms which are differentially affected by caffeine analogues or by direct addition of dibutyryl cyclic AMP. The direct effect of caffeine and the methyl xanthines on membrane calcium permeability is considered. (author)

Biology Division progress report for the period of October 1, 1986--September 30, 1988

Energy Technology Data Exchange (ETDEWEB)

1988-09-01

The Biology Division of the Oak Ridge National Laboratory is one component of the Department of Energy's intramural program in life sciences. Accordingly, /approximately/75% of the Division's total budget is derived from the Department of Energy through its Office of Health and Environmental Research. With respect to experimental biology, the congressionally mandated mission of this Office is to study adverse health effects of energy production and utilization. Within this stated broad mission, common themes among the research programs of the Biology Division are interactions of animals, cells, and molecules with their respective environments. Investigations focus on genetic and somatic effects of radiation and chemicals. Goals include identification and quantification of these effects, elucidation of pathways by which the effects are expressed, assessment of risks associated with radiation and chemical exposures, and establishment of strategies for extrapolation of risk data from animals to humans. Concurrent basic studies in genetics, biochemistry, molecular biology, and cell biology illuminate normal life processes as prerequisites to comprehending mutagenic and carcinogenic effects of environmental agents.

Nutritional Science Funding Opportunities | 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.

Nutritional Science Clinical Trials | 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.

Active Nutritional Science Grants | 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.

David Nelson, MD, MPH | 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.

Environmental Sciences Division. Annual progress report for period ending September 30, 1980. [Lead abstract

Energy Technology Data Exchange (ETDEWEB)

Auerbach, S.I.; Reichle, D.E.

1981-03-01

Research conducted in the Environmental Sciences Division for the Fiscal Year 1980 included studies carried out in the following Division programs and sections: (1) Advanced Fossil Energy Program, (2) Nuclear Program, (3) Environmental Impact Program, (4) Ecosystem Studies Program, (5) Low-Level Waste Research and Development Program, (6) National Low-Level Waste Program, (7) Aquatic Ecology Section, (8) Environmental Resources Section, (9) Earth Sciences Section, and (10) Terrestrial Ecology Section. In addition, Educational Activities and the dedication of the Oak Ridge National Environmental Research Park are reported. Separate abstracts were prepared for the 10 sections of this report.

Reward value-based gain control: divisive normalization in parietal cortex.

Science.gov (United States)

Louie, Kenway; Grattan, Lauren E; Glimcher, Paul W

2011-07-20

The representation of value is a critical component of decision making. Rational choice theory assumes that options are assigned absolute values, independent of the value or existence of other alternatives. However, context-dependent choice behavior in both animals and humans violates this assumption, suggesting that biological decision processes rely on comparative evaluation. Here we show that neurons in the monkey lateral intraparietal cortex encode a relative form of saccadic value, explicitly dependent on the values of the other available alternatives. Analogous to extra-classical receptive field effects in visual cortex, this relative representation incorporates target values outside the response field and is observed in both stimulus-driven activity and baseline firing rates. This context-dependent modulation is precisely described by divisive normalization, indicating that this standard form of sensory gain control may be a general mechanism of cortical computation. Such normalization in decision circuits effectively implements an adaptive gain control for value coding and provides a possible mechanistic basis for behavioral context-dependent violations of rationality.

A local maximum in gibberellin levels regulates maize leaf growth by spatial control of cell division.

Science.gov (United States)

Nelissen, Hilde; Rymen, Bart; Jikumaru, Yusuke; Demuynck, Kirin; Van Lijsebettens, Mieke; Kamiya, Yuji; Inzé, Dirk; Beemster, Gerrit T S

2012-07-10

Plant growth rate is largely determined by the transition between the successive phases of cell division and expansion. A key role for hormone signaling in determining this transition was inferred from genetic approaches and transcriptome analysis in the Arabidopsis root tip. We used the developmental gradient at the maize leaf base as a model to study this transition, because it allows a direct comparison between endogenous hormone concentrations and the transitions between dividing, expanding, and mature tissue. Concentrations of auxin and cytokinins are highest in dividing tissues, whereas bioactive gibberellins (GAs) show a peak at the transition zone between the division and expansion zone. Combined metabolic and transcriptomic profiling revealed that this GA maximum is established by GA biosynthesis in the division zone (DZ) and active GA catabolism at the onset of the expansion zone. Mutants defective in GA synthesis and signaling, and transgenic plants overproducing GAs, demonstrate that altering GA levels specifically affects the size of the DZ, resulting in proportional changes in organ growth rates. This work thereby provides a novel molecular mechanism for the regulation of the transition from cell division to expansion that controls organ growth and size. Copyright © 2012 Elsevier Ltd. All rights reserved.

Analytical Chemistry Division annual progress report for period ending December 31, 1990

Energy Technology Data Exchange (ETDEWEB)

1991-04-01

The Analytical Chemistry Division has programs in inorganic mass spectrometry, optical spectroscopy, organic mass spectrometry, and secondary ion mass spectrometry. It maintains a transuranium analytical laboratory and an environmental analytical laboratory. It carries out chemical and physical analysis in the fields of inorganic chemistry, organic spectroscopy, separations and synthesis. (WET)

Divison of Environmental Control Technology program, 1978

International Nuclear Information System (INIS)

1979-06-01

This report covers Division of Environmental Control Technology projects in progress during FY 1978, within the Office of the Assistant Secretary for Environment, Department of Energy. It is the second in a planned series of annual reports. The Division of Environmental Control Technology (ECT) continues to support the Assistant Secretary for Environment (EV) in discharging two primary responsibilities: (1) under the Environmental Engineering (EE) Program, the independent overview and assessment of environmental control aspects of both the U.S. Department of Energy's (DOE) research, development, and demonstration (RD and D) programs and the Nation's energy policies, and (2) under the Decontamination and Decommissioning Program, the reduction of potential environmental hazards at the radioactively contaminated sites that are presently owned or were formerly used by the Government. This report presents a short summary of objectives, approach, progress and results, future plans, and a reference bibliography for each research, development, or assessment project within the program areas described above

Divison of Environmental Control Technology program, 1978

Energy Technology Data Exchange (ETDEWEB)

Mott, William E.

1979-06-01

This report covers Division of Environmental Control Technology projects in progress during FY 1978, within the Office of the Assistant Secretary for Environment, Department of Energy. It is the second in a planned series of annual reports. The Division of Environmental Control Technology (ECT) continues to support the Assistant Secretary for Environment (EV) in discharging two primary responsibilities: (1) under the Environmental Engineering (EE) Program, the independent overview and assessment of environmental control aspects of both the U.S. Department of Energy's (DOE) research, development, and demonstration (RD and D) programs and the Nation's energy policies, and (2) under the Decontamination and Decommissioning Program, the reduction of potential environmental hazards at the radioactively contaminated sites that are presently owned or were formerly used by the Government. This report presents a short summary of objectives, approach, progress and results, future plans, and a reference bibliography for each research, development, or assessment project within the program areas described above.

IFLA General Conference, 1986. Bibliographic Control Division. Section: Bibliography. Papers.

Science.gov (United States)

International Federation of Library Associations and Institutions, The Hague (Netherlands).

Papers on bibliographic control presented at the 1986 International Federation of Library Associations (IFLA) conference include: (1) "Bibliographic Interchange/Coordination in Southeast Asia (Huck Tee Lim, Malaysia); (2) "Project for 'Chinese National Bibliography' and Its Progress" (Huang Jungui, China); (3) "Subject…

The stem cell division theory of cancer.

Science.gov (United States)

López-Lázaro, Miguel

2018-03-01

All cancer registries constantly show striking differences in cancer incidence by age and among tissues. For example, lung cancer is diagnosed hundreds of times more often at age 70 than at age 20, and lung cancer in nonsmokers occurs thousands of times more frequently than heart cancer in smokers. An analysis of these differences using basic concepts in cell biology indicates that cancer is the end-result of the accumulation of cell divisions in stem cells. In other words, the main determinant of carcinogenesis is the number of cell divisions that the DNA of a stem cell has accumulated in any type of cell from the zygote. Cell division, process by which a cell copies and separates its cellular components to finally split into two cells, is necessary to produce the large number of cells required for living. However, cell division can lead to a variety of cancer-promoting errors, such as mutations and epigenetic mistakes occurring during DNA replication, chromosome aberrations arising during mitosis, errors in the distribution of cell-fate determinants between the daughter cells, and failures to restore physical interactions with other tissue components. Some of these errors are spontaneous, others are promoted by endogenous DNA damage occurring during quiescence, and others are influenced by pathological and environmental factors. The cell divisions required for carcinogenesis are primarily caused by multiple local and systemic physiological signals rather than by errors in the DNA of the cells. As carcinogenesis progresses, the accumulation of DNA errors promotes cell division and eventually triggers cell division under permissive extracellular environments. The accumulation of cell divisions in stem cells drives not only the accumulation of the DNA alterations required for carcinogenesis, but also the formation and growth of the abnormal cell populations that characterize the disease. This model of carcinogenesis provides a new framework for understanding the

Dnmt1-dependent Chk1 pathway suppression is protective against neuron division.

Science.gov (United States)

Oshikawa, Mio; Okada, Kei; Tabata, Hidenori; Nagata, Koh-Ichi; Ajioka, Itsuki

2017-09-15

Neuronal differentiation and cell-cycle exit are tightly coordinated, even in pathological situations. When pathological neurons re-enter the cell cycle and progress through the S phase, they undergo cell death instead of division. However, the mechanisms underlying mitotic resistance are mostly unknown. Here, we have found that acute inactivation of retinoblastoma (Rb) family proteins (Rb, p107 and p130) in mouse postmitotic neurons leads to cell death after S-phase progression. Checkpoint kinase 1 (Chk1) pathway activation during the S phase prevented the cell death, and allowed the division of cortical neurons that had undergone acute Rb family inactivation, oxygen-glucose deprivation (OGD) or in vivo hypoxia-ischemia. During neurogenesis, cortical neurons became protected from S-phase Chk1 pathway activation by the DNA methyltransferase Dnmt1, and underwent cell death after S-phase progression. Our results indicate that Chk1 pathway activation overrides mitotic safeguards and uncouples neuronal differentiation from mitotic resistance. © 2017. Published by The Company of Biologists Ltd.

Metals and Ceramics Division Materials Science Program. Annual progress report for period ending December 31, 1982

International Nuclear Information System (INIS)

McHargue, C.J.

1983-05-01

This report summarizes the activities of the Materials Sciences Program in the Metals and Ceramics Division. These activities constitute about one-fourth of the research and development conducted by the division. The major elements of the Materials Sciences Program can be grouped under the areas of (1) structural characterization, (2) high-temperature alloy studies, (3) structural ceramics, and (4) radiation effects

Biology Division progress report for period of October 1, 1985-September 30, 1986

Energy Technology Data Exchange (ETDEWEB)

1987-02-01

In keeping with the role of DOE national laboratories in research, the work in biology is fundamental and the new knowledge is intended to form the basis both for understanding and for applications by industry to biotechnology, medicine, and agriculture. Almost all the research of the Division is experimental and utilizes mammalian and sub-mammalian systems to obtain data for predicting and understanding hazards to human health. Among the possible adverse effects of environmental substances on the health of humans, the Division has concentrated its efforts on mutagenesis, heritable genetic effects, and carcinogenesis all of which involve molecular, cellular, and organizational studies of the consequences of damage to genetic materials. Biology also has been assigned the major responsibility by DOE for the investigation of the carcinogenic effects of external high LET radiation (neutron and heavy ion radiation).

Laser Division report 1986-89

International Nuclear Information System (INIS)

Monga, J.C.

1995-01-01

This report is a technical account of the scientific R and D activities pursued by the Laser Division of the Bhabha Atomic Research Centre during 1986-89. It covers in considerable detail, progress made in all the activities undertaken during that period in laser development and their application. The most important among them was the development of the 1 kJ glass laser. Studies of laser produced plasmas were pursued using a smaller 50 J chain and at different stages of development of the 1 kJ chain. Significant results of plasma instabilities and x-ray spectroscopic studies are reported. Several plasma diagnostic tools developed are also described which studied plasmas, radiation transport, and ablation induced shocks. Studies were also conducted on the performance of dye lasers during their development. Development of several CO 2 lasers, cw, pulsed, hybrid and wavelength turned/stabilized, have been described and their performance evaluated. Development and performance of a 16μ CF 4 laser is also given. An electron beam controlled CO 2 laser design is reported. (author). refs., figs., tabs

Physics Division annual progress report for period ending June 30, 1977. [ORNL

Energy Technology Data Exchange (ETDEWEB)

Stelson, P.H.

1977-09-01

The bulk of the Division's effort concerned nuclear physics and accelerator development, but work in the areas of nuclear data, research applicable to the magnetic fusion project, atomic and molecular physics, and high-energy physics is also recounted. Lists of publications, technical talks, personnel, etc., are included. Individual reports with sufficient data are abstracted separately. (RWR)

Physics division annual report - October 2000.

Energy Technology Data Exchange (ETDEWEB)

Thayer, K. [ed.

2000-10-16

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&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.

Engineering Physics and Mathematics Division progress report for period ending August 31, 1989

International Nuclear Information System (INIS)

1989-12-01

This paper contains abstracts on research performed at the Engineering Physics and Mathematics Division of Oak Ridge National Laboratory. The areas covered are: mathematical science; nuclear-data measurement and evaluation; intelligent systems; nuclear analysis and shielding; and Engineering Physics Information Center

Physics Division annual progress report, January 1-December 31, 1983

International Nuclear Information System (INIS)

Trela, W.J.

1984-12-01

The Physics Division is organized into three major research areas: Weapons Physics, Inertial Fusion Physics, and Basic Research. In Weapons Physics, new strategic defensive research initiatives were developed in response to President Reagan's speech in May 1983. Significant advances have been made in high-speed diagnostics including electro-optic technique, fiber-optic systems, and imaging. In Inertial Fusion, the 40-kJ Antares CO 2 laser facility was completed, and the 1- by 1- by 2-m-long large-aperture module amplifier (LAM) was constructed and operated. In Basic Research, our main emphasis was on development of the Weapons Neutron Research (WNR) facility as a world-class pulsed neutron research facility

Interdependency of formation and localisation of the Min complex controls symmetric plastid division.

Science.gov (United States)

Maple, Jodi; Møller, Simon G

2007-10-01

Plastid division represents a fundamental biological process essential for plant development; however, the molecular basis of symmetric plastid division is unclear. AtMinE1 plays a pivotal role in selection of the plastid division site in concert with AtMinD1. AtMinE1 localises to discrete foci in chloroplasts and interacts with AtMinD1, which shows a similar localisation pattern. Here, we investigate the importance of Min protein complex formation during the chloroplast division process. Dissection of the assembly of the Min protein complex and determination of the interdependency of complex assembly and localisation in planta allow us to present a model of the molecular basis of selection of the division site in plastids. Moreover, functional analysis of AtMinE1 in bacteria demonstrates the level of functional conservation and divergence of the plastidic MinE proteins.

Engineering Physics and Mathematics Division progress report for period ending August 31, 1989

Energy Technology Data Exchange (ETDEWEB)

1989-12-01

This paper contains abstracts on research performed at the Engineering Physics and Mathematics Division of Oak Ridge National Laboratory. The areas covered are: mathematical science; nuclear-data measurement and evaluation; intelligent systems; nuclear analysis and shielding; and Engineering Physics Information Center. (LSP)

The TCP4 transcription factor of Arabidopsis blocks cell division in yeast at G1 → S transition

International Nuclear Information System (INIS)

Aggarwal, Pooja; Padmanabhan, Bhavna; Bhat, Abhay; Sarvepalli, Kavitha; Sadhale, Parag P.; Nath, Utpal

2011-01-01

Highlights: → TCP4 is a class II TCP transcription factor, that represses cell division in Arabidopsis. → TCP4 expression in yeast retards cell division by blocking G1 → S transition. → Genome-wide expression studies and Western analysis reveals stabilization of cell cycle inhibitor Sic1, as possible mechanism. -- Abstract: The TCP transcription factors control important aspects of plant development. Members of class I TCP proteins promote cell cycle by regulating genes directly involved in cell proliferation. In contrast, members of class II TCP proteins repress cell division. While it has been postulated that class II proteins induce differentiation signal, their exact role on cell cycle has not been studied. Here, we report that TCP4, a class II TCP protein from Arabidopsis that repress cell proliferation in developing leaves, inhibits cell division by blocking G1 → S transition in budding yeast. Cells expressing TCP4 protein with increased transcriptional activity fail to progress beyond G1 phase. By analyzing global transcriptional status of these cells, we show that expression of a number of cell cycle genes is altered. The possible mechanism of G1 → S arrest is discussed.

High School Sport Specialization Patterns of Current Division I Athletes.

Science.gov (United States)

Post, Eric G; Thein-Nissenbaum, Jill M; Stiffler, Mikel R; Brooks, M Alison; Bell, David R; Sanfilippo, Jennifer L; Trigsted, Stephanie M; Heiderscheit, Bryan C; McGuine, Timothy A

Sport specialization is a strategy to acquire superior sport performance in 1 sport but is associated with increased injury risk. Currently, the degree of high school specialization among Division I athletes is unknown. College athletes will display increased rates of specialization as they progress through their high school careers. Descriptive epidemiological study. Level 4. Three hundred forty-three athletes (115 female) representing 9 sports from a Midwest Division I University completed a previously utilized sport specialization questionnaire regarding sport participation patterns for each grade of high school. McNemar and chi-square tests were used to investigate associations of grade, sport, and sex with prevalence of sport specialization category (low, moderate, high) (a priori P ≤ 0.05). Specialization increased throughout high school, with 16.9% (n = 58) and 41.1% (n = 141) of athletes highly specialized in 9th and 12th grades, respectively. Football athletes were less likely to be highly specialized than nonfootball athletes for each year of high school ( P 0.23). The majority of Division I athletes were not classified as highly specialized throughout high school, but the prevalence of high specialization increased as athletes progressed through high school. Nonfootball athletes were more likely to be highly specialized than football athletes at each grade level. Most athletes who are recruited to participate in collegiate athletics will eventually specialize in their sport, but it does not appear that early specialization is necessary to become a Division I athlete. Athletes should be counseled regarding safe participation in sport during high school to minimize injury and maximize performance.

Adaptive pole placement: the division by zero problem

NARCIS (Netherlands)

Arent, Krzysztof; Arent, K.; Polderman, Jan W.; Mareels, I.M.Y.; Mareels, Iven

1995-01-01

We re-examine the division by zero problem which occurs in certainty equivalence based indirect adaptive control algorithms applied to linear systems. By exploiting a parametrization for linear systems induced by the continued fraction description of its transfer function, the division by zero

Nutritional Science Meetings and Events | 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.

Environmental Sciences Division. Annual progress report for period ending September 30, 1975

Energy Technology Data Exchange (ETDEWEB)

1976-08-01

The energy crisis and creation of ERDA were dominant factors affecting the activities of the Environmental Sciences Division during the past year. Efforts primarily centered on coal conversion effluents, aquatic effects from power plants, terrestrial modeling of both radioactive and nonradioactive waste transport, mineral cycling, forest management, and information handling codes and techniques. A bibliography of publications, presentation, these, and other professional activities is included. (PCS)

Quarterly report of Biological and Medical Research Division, April 1955

Energy Technology Data Exchange (ETDEWEB)

Brues, A.M.

1955-04-01

This report is a compilation of 48 investigator prepared summaries of recent progress in individual research programs of the Biology and Medical Division of the Argonne National Laboratory for the quarterly period ending April,1955. Individual reports are about 3-6 pages in length and often contain research data.

Metals and Ceramics Division Materials Science Program. Annual progress report for period ending June 30, 1984

International Nuclear Information System (INIS)

McHargue, C.J.

1984-11-01

This report summarizes the activities of the Materials Sciences Program in the Metals and Ceramics Division for the period January 1, 1983, to June 30, 1984. These activities constitute about one-fourth of the research and development conducted by the division. The emphasis of the program can be described as the scientific design of materials. The efforts are directed toward three classes of materials: high-temperature metallic alloys based on intermetallic compounds, structural ceramics, and radiation-resistant alloys

Metals and Ceramics Division Materials Science Program. Annual progress report for period ending June 30, 1984

Energy Technology Data Exchange (ETDEWEB)

McHargue, C.J. (comp.)

1984-11-01

This report summarizes the activities of the Materials Sciences Program in the Metals and Ceramics Division for the period January 1, 1983, to June 30, 1984. These activities constitute about one-fourth of the research and development conducted by the division. The emphasis of the program can be described as the scientific design of materials. The efforts are directed toward three classes of materials: high-temperature metallic alloys based on intermetallic compounds, structural ceramics, and radiation-resistant alloys.

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.

Reactor Engineering Division annual report

International Nuclear Information System (INIS)

1978-10-01

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)

Progress report for Applied Physics Division 1 July 1981 - 30 June 1982

International Nuclear Information System (INIS)

Anon.

1983-01-01

The Division is organised as four sections: nuclear applications and energy studies; semiconductor and radiation physics; electronics systems; and fusion physics. Research activities include studies in neutron fission, neutron capture and neutron scattering; use of nuclear techniques of analysis such as PIXE; development of semiconductor detectors; rotamak experiments, and further fusion studies on MHD surface waves and alfven resonance heating of plasmas. A list of publications is included

Progress report: Physics Division, 1 July to 30 September 1981

International Nuclear Information System (INIS)

1981-11-01

The work of the Physics Division during the quarter is reviewed. Nuclear physics activities included investigations of beta-delayed proton decay, lifetime measurements using the ISOL facility, radiocarbron dating experiments, studies of high spin states, and crystal blocking measurements for fission fragments from 16 O bombardment of 197 Au. Construction of the haavy ion superconducting cyclotron and development of the high current proton accelerator continued. Neutron diffraction studies were carried out on a number of compounds, low-frequency soliton modes were observed in a magnetic chain compound, vacancy formation energy in thorium metal was measured, and the size of a collision cascade initiated by a single ion passing through condensed matter was calculated. Work in applied mathematics and computation is reviewed

Progress report - physics division 1985 January 01 - June 30

International Nuclear Information System (INIS)

1985-08-01

This report reviews progress made during the first half of 1985 in the following areas: development of the TASCC facility; experimental and theoretical nuclear physics research; accelerator physics; condensed matter physics; applied mathematics and computer facility operation

Quality control in the low activity radioanalytical laboratory of the Environmental Division, DIEAM.CN of NUCLEBRAS Research Center - CDTN

International Nuclear Information System (INIS)

Carvalho, M.A.G. de

1988-01-01

The Environmental Engineering Division - DIEAM.CN of NUCLEBRAS research center - CTDN, is in charge of the routine work related to the analysis of environment samples collected at several NUCLEBRAS facilities. This paper presents the procedures used for quality control of the analyses performed at the Laboratory. The samples are initially verified and recorded as soon as they arrive at the Division. From then on, each aliquot and each analysis will be controlled using a follow-up sheet. Once a year, the operational conditions of the Lab couting systems are verified thoroughly. At that time, the systems are calibrated using certified radioactivity standards. Performance of the detectors is checked using control graphs, which can indicate the need for specific procedures to be followed such as maintenance, decontamination or recalibration. In order to reduce the risk of mistakes and to increase the capacity for global data evaluation, a microcomputer is used for processing the counting data and for editing a final report. (author) [pt

Barrett's Esophagus Translational Research Network (BETRNet) | Division of Cancer Prevention

Science.gov (United States)

The goal of BETRNet is to reduce the incidence, morbidity, and mortality of esophageal adenocarcinoma by answering key questions related to the progression of the disease, especially in the premalignant stage. In partnership with NCI’s Division of Cancer Biology, multidisciplinary translational research centers collaborate to better understand the biology of Barrett's

The effect of caffeine on radiation-induced division delay

International Nuclear Information System (INIS)

Snyder, M.H.; Kimler, B.F.; Leeper, D.B.

1977-01-01

Caffeine (100 μg/ml) was added to monolayer cultures of Chinese hamster ovary cells coincident with 60 Co γ-irradiation (75 to 300 rad). The results indicated that caffeine (at concentrations that did not perturb cell-cycle progression as monitored by the mitotic selection technique) exerted a protective effect against radiation-induced division delay. This protection consisted of an increase in the number of cells that were refractory to the radiation insult, as well as a decrease in the average time that non-refractory cells were delayed before they recovered their ability to progress through the cell cycle. (U.K.)

Radiochemistry Division : annual progress report for 1978

International Nuclear Information System (INIS)

Subramanian, M.S.; Satya Prakash

1981-01-01

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.)

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

International Nuclear Information System (INIS)

1982-08-01

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 148 Nd and 139 La was investigated. Zirconium alloy studies included work on stress corrosion cracking and the Baushinger effect

Annual report of the Nuclear Physics Division [for] the period ending December 1975

International Nuclear Information System (INIS)

Jain, B.K.; Nadkarni, D.M.; Rao, K.R.P.M.

1976-01-01

The R and D activities of the Nuclear Physics Division of the Bhabha Atomic Research Centre, Bombay, during 1975, are described. The following are the significant areas of research activities of the Division : resonance reactions, nuclear spectra, fast fission, ternary and quaternary fission, neutron diffraction studies of magnetic materials, neutron inelastic scattering and dynamics of condensed media. The progress of development work on various experimental techniques and facilities including ion implantation facility and terminal tandem accelerator has been reported. (M.G.B.)

THE INFLUENCE OF CAFFEINE ON MITOTIC DIVISION AT CAPSICUM ANNUUM L.

Directory of Open Access Journals (Sweden)

Elena Rosu

2006-08-01

Full Text Available The paper presents, the caffeine effects in mitotic division at Capsicum annuum L.. The treatment has determined the lessening of the mitotic index (comparative with the control variant, until mitotic division total inhibition, as well as an growth frequency of division aberation in anaphase and telophase.

Division of Biological and Medical Research annual report, 1979

International Nuclear Information System (INIS)

Rosenthal, M.W.

1979-01-01

Separate abstracts were prepared for 14 of the 20 sections included in this progress report. The other 6 sections include: introductory statements by the division director; descriptions of the animal, computer, electron microscope, and radiation support facilities; a listing of the educational activities, divisional seminars, and oral presentations by staff members; and divisional staff publications. An author index to the report is included

75 FR 24748 - Johnson Controls, Inc., Automotive Experience Division, Including Workers Whose Unemployment...

Science.gov (United States)

2010-05-05

...., Automotive Experience Division, Including Workers Whose Unemployment Insurance (UI) Wages Are Paid Through... unemployment insurance (UI) tax account, under the name Hoover Universal. Accordingly, the Department is... Division, including workers whose unemployment insurance (UI) wages are paid through Hoover Universal...

Reactor Engineering Division annual report

International Nuclear Information System (INIS)

Hirota, Jitsuya; Asaoka, Takumi; Suzuki, Tomoo; Mitani, Hiroshi; Akino, Fujiyoshi

1977-09-01

Research activities in the Division of Reactor Engineering in fiscal 1976 are described. Works of the division concern mainly the development of multi-purpose Very High Temperature Gas Cooled Reactor, fusion reactor engineering, and the development of Liquid Metal Fast Breeder Reactor in 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 activities of the Committee on Reactor Physics. (auth.)

Reactor Engineering Division annual report

International Nuclear Information System (INIS)

1976-09-01

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.)

Reactor Engineering Division annual report

International Nuclear Information System (INIS)

1975-11-01

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.)

Reactor Engineering Division annual report

International Nuclear Information System (INIS)

Matsuura, Shojiro; Nakahara, Yasuaki; Takano, Hideki

1982-09-01

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)

Uhrf1 controls the self-renewal versus differentiation of hematopoietic stem cells by epigenetically regulating the cell-division modes.

Science.gov (United States)

Zhao, Jingyao; Chen, Xufeng; Song, Guangrong; Zhang, Jiali; Liu, Haifeng; Liu, Xiaolong

2017-01-10

Hematopoietic stem cells (HSCs) are able to both self-renew and differentiate. However, how individual HSC makes the decision between self-renewal and differentiation remains largely unknown. Here we report that ablation of the key epigenetic regulator Uhrf1 in the hematopoietic system depletes the HSC pool, leading to hematopoietic failure and lethality. Uhrf1-deficient HSCs display normal survival and proliferation, yet undergo erythroid-biased differentiation at the expense of self-renewal capacity. Notably, Uhrf1 is required for the establishment of DNA methylation patterns of erythroid-specific genes during HSC division. The expression of these genes is enhanced in the absence of Uhrf1, which disrupts the HSC-division modes by promoting the symmetric differentiation and suppressing the symmetric self-renewal. Moreover, overexpression of one of the up-regulated genes, Gata1, in HSCs is sufficient to phenocopy Uhrf1-deficient HSCs, which show impaired HSC symmetric self-renewal and increased differentiation commitment. Taken together, our findings suggest that Uhrf1 controls the self-renewal versus differentiation of HSC through epigenetically regulating the cell-division modes, thus providing unique insights into the relationship among Uhrf1-mediated DNA methylation, cell-division mode, and HSC fate decision.

Progress report, Biology and Health Physics Division, January 1 to March 31, 1978

International Nuclear Information System (INIS)

Progress of work in Biology and Health Physics Division is reported for first quarter 1978. Measurements of liquid and plastic scintillator responses over a wide range of gamma-ray energies and calculations of the shape of the Compton electron distribution have been made for different scintillator sizes. Other work performed in health physics included determination of errors involved in accurate determination of dose-equivalents resulting from tritium ingestion, and development of radiation monitors and techniques for using them to best advantage. A wide range of environmental studies were underway during the quarter, notably 14 C/ 12 C ratio measurement using an accelerator-spectrometer and contiuing studies of the beneficial uses of thermal effluents. Development of computer linkage techniques for medical records continued. Practical applications of the approach include linkage of personal exposure histories with death records pertaining to the exposed individuals. Work in the Biology Branch has continued to focus upon the effects of radiation on a variety of living organisms, ranging from bacterial viruses to humans. The principal sensitive target for long-term biological effects of radiation on all living organisms is DNA. The chemical nature of the damage caused in DNA by radiation and the response of cells to this damage is being studied by a variety of biochemical and genetic techniques. A review of literature on the causes of cancer in humans has continued. If effects are linearly related to total dose, as is normally assumed for purposes of radiation protection, then the total number of fatal cancers predicted to arise from the use of nuclear power in the future should be about 100 times less than the number induced by urban air pollution resulting from the combustion of coal and oil to produce the same amount of electricity. (OST)

Active and Precise Control of Microdroplet Division Using Horizontal Pneumatic Valves in Bifurcating Microchannel

Directory of Open Access Journals (Sweden)

Shuichi Shoji

2013-05-01

Full Text Available This paper presents a microfluidic system for the active and precise control of microdroplet division in a micro device. Using two horizontal pneumatic valves formed at downstream of bifurcating microchannel, flow resistances of downstream channels were variably controlled. With the resistance control, volumetric ratio of downstream flows was changed and water-in-oil microdroplets were divided into two daughter droplets of different volume corresponding to the ratio. The microfluidic channels and pneumatic valves were fabricated by single-step soft lithography process of PDMS (polydimethylsiloxane using SU-8 mold. A wide range control of the daughter droplets’ volume ratio was achieved by the simple channel structure. Volumetric ratio between large and small daughter droplets are ranged from 1 to 70, and the smallest droplet volume of 14 pL was obtained. The proposed microfluidic device is applicable for precise and high throughput droplet based digital synthesis.

Tracking SDG7 : The Energy Progress Report 2018

OpenAIRE

International Energy Agency; International Renewable Energy Agency; United Nations; World Bank Group; World Health Organization

2018-01-01

The Energy Progress Report provides a global dashboard on progress towards Sustainable Development Goal 7 (SDG7). The report is a joint effort of the International Energy Agency (IEA), the International Renewable Energy Agency (IRENA), United Nations Statistics Division (UNSD), the World Bank, and the World Health Organization (WHO), which the United Nations (UN) has named as global custod...

Engineering Physics and Mathematics Division progress report for period ending December 31, 1992

Energy Technology Data Exchange (ETDEWEB)

Ward, R.C.

1993-05-01

In this report, our research is described through abstracts of journal articles, technical reports, and presentations organized into sections following the five major operating units in the division: Mathematical Sciences, Intelligent Systems, Nuclear Data and Measurement Analysis, Nuclear Analysis and Shielding, and the Engineering Physics Information Centers. Each section begins with an introduction highlighting honors, awards, and significant research accomplishments in that unit during the reporting period.

Engineering Physics and Mathematics Division progress report for period ending December 31, 1992

International Nuclear Information System (INIS)

Ward, R.C.

1993-05-01

In this report, our research is described through abstracts of journal articles, technical reports, and presentations organized into sections following the five major operating units in the division: Mathematical Sciences, Intelligent Systems, Nuclear Data and Measurement Analysis, Nuclear Analysis and Shielding, and the Engineering Physics Information Centers. Each section begins with an introduction highlighting honors, awards, and significant research accomplishments in that unit during the reporting period

Reactor Engineering Division annual report

International Nuclear Information System (INIS)

1980-09-01

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)

High Energy Physics Division semiannual report of research activities, July 1, 1990--December 31, 1990

International Nuclear Information System (INIS)

Berger, E.; Moonier, P.; May, E.; Norem, J.

1991-02-01

A report is presented of research and development activities conducted in the High Energy Physics Division at Argonne National Laboratory during the six month period July 1 through December 31, 1990. Analyses of data from experiments performed by members of the Division are summarized, and the status of experiments taking data and of those being prepared is reviewed. Descriptions are included of research on theoretical and phenomenological topics in particle physics. Progress reports are provided on accelerator research and development, detector research and development, and experimental facilities research. Lists are presented of publications, of colloquia and conference talks, and of significant external community activities of members of the Division

Progress report physics division 1984 January 1 - June 30

International Nuclear Information System (INIS)

1984-08-01

This report reviews progress made during the first half of 1984 in the following areas: development of the TASCC facility; experimental and theoretical nuclear physics research; development of the heavy-ion superconducting cyclotron, the high current proton accelerator and the electron test accelerator; condensed matter physics; applied mathematics and computer facility operation

Progress report physics division 1984 July 1 - December 31

International Nuclear Information System (INIS)

1985-02-01

This report reviews progress made during the last half of 1984 in the following areas: development of the TASCC facility; experimental and theoretical nuclear physics research; development of the heavy-ion superconducting cyclotron, the high current proton accelerator and the electron test accelerator; condensed matter physics; applied mathematics and computer facility operation

Mechanical control of mitotic progression in single animal cells

OpenAIRE

Cattin, Cedric J.; Düggelin, Marcel; Martinez-Martin, David; Gerber, Christoph; Müller, Daniel J.; Stewart, Martin P.

2015-01-01

Despite the importance of mitotic cell rounding in tissue development and cell proliferation, there remains a paucity of approaches to investigate the mechanical robustness of cell rounding. Here we introduce ion beam-sculpted microcantilevers that enable precise force-feedback-controlled confinement of single cells while characterizing their progression through mitosis. We identify three force regimes according to the cell response: small forces (∼5 nN) that accelerate mitotic progression, i...

Active Barrett's Esophagus Translational Research Network Grants | 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.

Progress report - physical sciences - physics division - 1993 January 01 - June 30

International Nuclear Information System (INIS)

1993-11-01

After significant organizational change for the Physics Division, there are now two groups: Neutron and Condensed Matter Science, and Nuclear Physics. Theoretical Physics Branch was disbanded. A topical review of work on high power proton linacs describes the historical development of high power ion linacs and the ion source development program from initiation to its completion in 1993. RFQ1 became the first particle accelerator to be driven by a klystrode-based rf system. The accelerator operated at 1.25 MeV and accelerated more than 50 mA of high quality beam. The equipment has been sent to Los Alamos National Laboratory and will be recommissioned as the Chalk River Injection Test Stand (CRITS). The laser plasma beatwave accelerator generating accelerating field gradients of up to 1.8 GeV/m and acceleration of an injected electron beam to at least 30 meV over a 1 cm distance. The high power CO 2 laser beam was used to irradiate Zr-N6 pressure tube samples. The aim was to assess surface modifications particularly from shock hardening. Application of radiofrequency waves were used to investigate the properties of relevant materials, notably industrial ferrites. Chalk River participated in an international collaboration on measurement of dielectric properties of materials at high temperatures. A second topical review on neutron scattering and mineral physics deals with phase transitions in carbonate and in silicates. Dualspec is operating successfully. Modifications have been made to improve safety, reproducibility, angle control, calibration and sample analysis. Reviews from six programs: physics, molecular physics, material science, condensed matter theory, neutrino physics, and molecular dating and modelling are given. 1 tab., 17 figs

Progress report - physical sciences - physics division - 1993 January 01 - June 30

Energy Technology Data Exchange (ETDEWEB)

NONE

1993-11-01

After significant organizational change for the Physics Division, there are now two groups: Neutron and Condensed Matter Science, and Nuclear Physics. Theoretical Physics Branch was disbanded. A topical review of work on high power proton linacs describes the historical development of high power ion linacs and the ion source development program from initiation to its completion in 1993. RFQ1 became the first particle accelerator to be driven by a klystrode-based rf system. The accelerator operated at 1.25 MeV and accelerated more than 50 mA of high quality beam. The equipment has been sent to Los Alamos National Laboratory and will be recommissioned as the Chalk River Injection Test Stand (CRITS). The laser plasma beatwave accelerator generating accelerating field gradients of up to 1.8 GeV/m and acceleration of an injected electron beam to at least 30 meV over a 1 cm distance. The high power CO{sub 2} laser beam was used to irradiate Zr-N6 pressure tube samples. The aim was to assess surface modifications particularly from shock hardening. Application of radiofrequency waves were used to investigate the properties of relevant materials, notably industrial ferrites. Chalk River participated in an international collaboration on measurement of dielectric properties of materials at high temperatures. A second topical review on neutron scattering and mineral physics deals with phase transitions in carbonate and in silicates. Dualspec is operating successfully. Modifications have been made to improve safety, reproducibility, angle control, calibration and sample analysis. Reviews from six programs: physics, molecular physics, material science, condensed matter theory, neutrino physics, and molecular dating and modelling are given. 1 tab., 17 figs.

Gain control through divisive inhibition prevents abrupt transition to chaos in a neural mass model.

Science.gov (United States)

Papasavvas, Christoforos A; Wang, Yujiang; Trevelyan, Andrew J; Kaiser, Marcus

2015-09-01

Experimental results suggest that there are two distinct mechanisms of inhibition in cortical neuronal networks: subtractive and divisive inhibition. They modulate the input-output function of their target neurons either by increasing the input that is needed to reach maximum output or by reducing the gain and the value of maximum output itself, respectively. However, the role of these mechanisms on the dynamics of the network is poorly understood. We introduce a novel population model and numerically investigate the influence of divisive inhibition on network dynamics. Specifically, we focus on the transitions from a state of regular oscillations to a state of chaotic dynamics via period-doubling bifurcations. The model with divisive inhibition exhibits a universal transition rate to chaos (Feigenbaum behavior). In contrast, in an equivalent model without divisive inhibition, transition rates to chaos are not bounded by the universal constant (non-Feigenbaum behavior). This non-Feigenbaum behavior, when only subtractive inhibition is present, is linked to the interaction of bifurcation curves in the parameter space. Indeed, searching the parameter space showed that such interactions are impossible when divisive inhibition is included. Therefore, divisive inhibition prevents non-Feigenbaum behavior and, consequently, any abrupt transition to chaos. The results suggest that the divisive inhibition in neuronal networks could play a crucial role in keeping the states of order and chaos well separated and in preventing the onset of pathological neural dynamics.

High Energy Physics Division semiannual report of research activities. Semi-annual progress report, July 1, 1995--December 31, 1995

International Nuclear Information System (INIS)

Norem, J.; Bajt, D.; Rezmer, R.; Wagner, R.

1996-10-01

This report describes the research conducted in the High Energy Physics Division of Argonne National Laboratory during the period July 1, 1995 - December 31, 1995. Topics covered here include experimental and theoretical particle physics, advanced accelerator physics, detector development, and experimental facilities research. Lists of division publications and colloquia are included

Biology Division progress report, October 1, 1978-May 31, 1980

International Nuclear Information System (INIS)

1980-10-01

Separate abstracts were prepared for each of the four sections into which this progress report has been divided. The report also contains sections related to interdivision activities and educational activities

Growth-arrest-specific protein 2 inhibits cell division in Xenopus embryos.

Directory of Open Access Journals (Sweden)

Tong Zhang

Full Text Available Growth-arrest-specific 2 gene was originally identified in murine fibroblasts under growth arrest conditions. Furthermore, serum stimulation of quiescent, non-dividing cells leads to the down-regulation of gas2 and results in re-entry into the cell cycle. Cytoskeleton rearrangements are critical for cell cycle progression and cell division and the Gas2 protein has been shown to co-localize with actin and microtubules in interphase mammalian cells. Despite these findings, direct evidence supporting a role for Gas2 in the mechanism of cell division has not been reported.To determine whether the Gas2 protein plays a role in cell division, we over-expressed the full-length Gas2 protein and Gas2 truncations containing either the actin-binding CH domain or the tubulin-binding Gas2 domain in Xenopus laevis embryos. We found that both the full-length Gas2 protein and the Gas2 domain, but not the CH domain, inhibited cell division and resulted in multinucleated cells. The observation that Gas2 domain alone can arrest cell division suggests that Gas2 function is mediated by microtubule binding. Gas2 co-localized with microtubules at the cell cortex of Gas2-injected Xenopus embryos using cryo-confocal microscopy and co-sedimented with microtubules in cytoskeleton co-sedimentation assays. To investigate the mechanism of Gas2-induced cell division arrest, we showed, using a wound-induced contractile array assay, that Gas2 stabilized microtubules. Finally, electron microscopy studies demonstrated that Gas2 bundled microtubules into higher-order structures.Our experiments show that Gas2 inhibits cell division in Xenopus embryos. We propose that Gas2 function is mediated by binding and bundling microtubules, leading to cell division arrest.

Gain control through divisive inhibition prevents abrupt transition to chaos in a neural mass model

Science.gov (United States)

Papasavvas, Christoforos A.; Wang, Yujiang; Trevelyan, Andrew J.; Kaiser, Marcus

2016-01-01

Experimental results suggest that there are two distinct mechanisms of inhibition in cortical neuronal networks: subtractive and divisive inhibition. They modulate the input-output function of their target neurons either by increasing the input that is needed to reach maximum output or by reducing the gain and the value of maximum output itself, respectively. However, the role of these mechanisms on the dynamics of the network is poorly understood. We introduce a novel population model and numerically investigate the influence of divisive inhibition on network dynamics. Specifically, we focus on the transitions from a state of regular oscillations to a state of chaotic dynamics via period-doubling bifurcations. The model with divisive inhibition exhibits a universal transition rate to chaos (Feigenbaum behavior). In contrast, in an equivalent model without divisive inhibition, transition rates to chaos are not bounded by the universal constant (non-Feigenbaum behavior). This non-Feigenbaum behavior, when only subtractive inhibition is present, is linked to the interaction of bifurcation curves in the parameter space. Indeed, searching the parameter space showed that such interactions are impossible when divisive inhibition is included. Therefore, divisive inhibition prevents non-Feigenbaum behavior and, consequently, any abrupt transition to chaos. The results suggest that the divisive inhibition in neuronal networks could play a crucial role in keeping the states of order and chaos well separated and in preventing the onset of pathological neural dynamics. PMID:26465514

Cell-Division Behavior in a Heterogeneous Swarm Environment.

Science.gov (United States)

Erskine, Adam; Herrmann, J Michael

2015-01-01

We present a system of virtual particles that interact using simple kinetic rules. It is known that heterogeneous mixtures of particles can produce particularly interesting behaviors. Here we present a two-species three-dimensional swarm in which a behavior emerges that resembles cell division. We show that the dividing behavior exists across a narrow but finite band of parameters and for a wide range of population sizes. When executed in a two-dimensional environment the swarm's characteristics and dynamism manifest differently. In further experiments we show that repeated divisions can occur if the system is extended by a biased equilibrium process to control the split of populations. We propose that this repeated division behavior provides a simple model for cell-division mechanisms and is of interest for the formation of morphological structure and to swarm robotics.

Asymmetric cell division requires specific mechanisms for adjusting global transcription.

Science.gov (United States)

Mena, Adriana; Medina, Daniel A; García-Martínez, José; Begley, Victoria; Singh, Abhyudai; Chávez, Sebastián; Muñoz-Centeno, Mari C; Pérez-Ortín, José E

2017-12-01

Most cells divide symmetrically into two approximately identical cells. There are many examples, however, of asymmetric cell division that can generate sibling cell size differences. Whereas physical asymmetric division mechanisms and cell fate consequences have been investigated, the specific problem caused by asymmetric division at the transcription level has not yet been addressed. In symmetrically dividing cells the nascent transcription rate increases in parallel to cell volume to compensate it by keeping the actual mRNA synthesis rate constant. This cannot apply to the yeast Saccharomyces cerevisiae, where this mechanism would provoke a never-ending increasing mRNA synthesis rate in smaller daughter cells. We show here that, contrarily to other eukaryotes with symmetric division, budding yeast keeps the nascent transcription rates of its RNA polymerases constant and increases mRNA stability. This control on RNA pol II-dependent transcription rate is obtained by controlling the cellular concentration of this enzyme. © The Author(s) 2017. Published by Oxford University Press on behalf of Nucleic Acids Research.

Progress report 1990/91 of the Division of Fusion Plasma Physics

International Nuclear Information System (INIS)

Lehnert, B.

1991-08-01

A summary is given of the historical background, research, education and available resources of the Division of Fusion Plasma Physics at the newly established Alfven Laboratory. Experimental and theoretical research is performed, including basic physics of magnetized plasma as well as applications to magnetically confined fusion plasma, and to certain technical and cosmical problems. The major project consists of the 'Extrap' high-beta confinement scheme within which a large experimental facility, EXTRAP T2, is under preparation. This research is performed in terms of extensive international collaboration and commitments, in particular with the European Community (Euratom). The education includes pregraduate and postgraduate teaching, the latter being based on obligatory, optional and extra courses which are connected with the research activities

Physics Division progress report, January 1, 1993--December 31, 1993

Energy Technology Data Exchange (ETDEWEB)

Hollen, G.Y.; Schappert, G.T. [comp.

1994-07-01

This report discusses its following topics: Recent Weapons-Physics Experiments on the Pegasus II Pulsed Power Facility; Operation of a Large-Scale Plasma Source Ion Implantation Experiment; Production of Charm and Beauty Mesons at Fermilab Sudbury Neutrino Observatory; P-Division`s Essential Role in the Redirected Inertial Confinement Fusion Program; Trident Target Physics Program; Comparative Studies of Brain Activation with Magnetocephalography and Functional Magnetic Resonance Imaging; Cellular Communication, Interaction of G-Proteins, and Single-Photon Detection; Nuclear Magnetic Resonance Studies of Oxygen-doped La{sub 2}CuO{sub 4+{delta}} Thermoacoustic Engines; A Shipborne Raman Water-Vapor Lidar for the Central Pacific Experiment; Angara-5 Pinch Temperature Verification with Time-resolved Spectroscopy; Russian Collaborations on Megagauss Magnetic Fields and Pulsed-Power Applications; Studies of Energy Coupling from Underground Explosions; Trapping and Cooling Large Numbers of Antiprotons: A First Step Toward the Measurement of Gravity on Antimatter; and Nuclear-Energy Production Without a Long-Term High-Level Waste Stream.

Progress report of Physics Division. 1st January - 31st December 1973

Energy Technology Data Exchange (ETDEWEB)

NONE

2004-07-01

The reactor MOATA is operating successfully at 100 kW with the higher available flux being much appreciated by all users. An uranium analysis service commenced and the various mining exploration companies are gradually availing themselves of it in an increasing fashion. The possible introduction of a similar service for neutron radiography is being explored following successful laboratory studies. Various other applications of nuclear science are under development. The revised safety assessment carried out for 100 kW operation of MOATA led to a more generalized study of self limited, non boiling power transients and in particular the maximum reactivity limit for these transients. This involved a re-examination of the SPERT non boiling transients and the prediction of their outcome in quantitative terms on purely physics considerations without resort to normalization. The indications are that a 10 second period transient in MOATA would give rise to a power transient which would be self limited to 100 . A possible experiment to test this prediction is under examination. Various physics aspects of MOATA operation were studied on a mockup of the reactor on the split table machine and the degree of understanding by staff of this reactor's behavior much improved. The safety assessment of the split table machine (Critical Facility) was completed and should shortly be available from the printer for submission to the new Licensing and Regulatory Bureau for authority to operate. {nu}-bar measurements for the various fissile elements are complete, but studies of neutron emission from the individual fragments produced during the spontaneous fission of {sup 252}Cf fission and the neutron energy spectrum of {sup 252}Cf fission neutrons are being undertaken to clarify some of the remaining discrepancies. Analysis of neutron capture cross section data obtained at Oak Ridge National Laboratory is continuing. Details of the analysis for some element studies are given. Progress has

Progress report of Physics Division. 1st January - 31st December 1973

International Nuclear Information System (INIS)

2004-01-01

The reactor MOATA is operating successfully at 100 kW with the higher available flux being much appreciated by all users. An uranium analysis service commenced and the various mining exploration companies are gradually availing themselves of it in an increasing fashion. The possible introduction of a similar service for neutron radiography is being explored following successful laboratory studies. Various other applications of nuclear science are under development. The revised safety assessment carried out for 100 kW operation of MOATA led to a more generalized study of self limited, non boiling power transients and in particular the maximum reactivity limit for these transients. This involved a re-examination of the SPERT non boiling transients and the prediction of their outcome in quantitative terms on purely physics considerations without resort to normalization. The indications are that a 10 second period transient in MOATA would give rise to a power transient which would be self limited to 100 . A possible experiment to test this prediction is under examination. Various physics aspects of MOATA operation were studied on a mockup of the reactor on the split table machine and the degree of understanding by staff of this reactor's behavior much improved. The safety assessment of the split table machine (Critical Facility) was completed and should shortly be available from the printer for submission to the new Licensing and Regulatory Bureau for authority to operate. ν-bar measurements for the various fissile elements are complete, but studies of neutron emission from the individual fragments produced during the spontaneous fission of 252 Cf fission and the neutron energy spectrum of 252 Cf fission neutrons are being undertaken to clarify some of the remaining discrepancies. Analysis of neutron capture cross section data obtained at Oak Ridge National Laboratory is continuing. Details of the analysis for some element studies are given. Progress has also been

Instrumentation and Controls Division Progress Report for the Period July 1, 1994, to December 31, 1997: Working Together on New Horizons

Energy Technology Data Exchange (ETDEWEB)

McDonald, D.W.

1998-04-01

The ORNL I&C Division was created to support DOE-funded research. We have since broadened our mission to include other sponsors as the need for our services has grown. This report summarizes some of the work we have been conducting on behalf of DOE, other federal agencies, and the private sector during the past three and a half years. Because we take on nearly 750 individual projects every year, much of our work cannot be reported in detail. We hope that these summaries are of interest and demonstrate that our work, rooted in DOE scientific and technological programs, can also benefit the nation, its industry, and its citizens in direct and tangible ways.

Multi-channel time-division integrator in HL-2A

International Nuclear Information System (INIS)

Yan Ji

2008-01-01

HL-2A is China's first Tokamak device with divertor configuration (magnetic confinement controlled nuclear fusion device). To find out the details of on-going fusion reaction at different times is of important significance in achieving controlled nuclear fusion. We developed a new type multi-channel time-division integrator for HL-2A. It has functions of automatic cutting off negative pulse of the input signals, optional integrating time division spacing 0.2-1 ms, TTL starting trigger signal, automatic regularly work 20 s, and integrating 10 channel at the same time. (authors)

Progress report, Physics Division, October 1 to December 31, 1976

International Nuclear Information System (INIS)

1977-02-01

A summary is given of the CRNL MP Tandem operation, research activities covering the range of nuclear and solid state physics, progress in CdTe detector technology, and mathematics and computation applied to the overall CRNL research program. (E.C.B.)

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

International Nuclear Information System (INIS)

1981-11-01

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 H 2 -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

Solid State Division progress report, September 30, 1981

Energy Technology Data Exchange (ETDEWEB)

1982-04-01

Progress made during the 19 months from March 1, 1980, through September 30, 1981, is reported in the following areas: theoretical solid state physics (surfaces, electronic and magnetic properties, particle-solid interactions, and laser annealing); surface and near-surface properties of solids (plasma materials interactions, ion-solid interactions, pulsed laser annealing, and semiconductor physics and photovoltaic conversion); defects in solids (radiation effects, fracture, and defects and impurities in insulating crystals); transport properties of solids (fast-ion conductors, superconductivity, and physical properties of insulating materials); neutron scattering (small-angle scattering, lattice dynamics, and magnetic properties); crystal growth and characterization (nuclear waste forms, ferroelectric mateirals, high-temperature materials, and special materials); and isotope research materials. Publications and papers are listed. (WHK)

Solid State Division progress report, September 30, 1981

International Nuclear Information System (INIS)

1982-04-01

Progress made during the 19 months from March 1, 1980, through September 30, 1981, is reported in the following areas: theoretical solid state physics (surfaces, electronic and magnetic properties, particle-solid interactions, and laser annealing); surface and near-surface properties of solids (plasma materials interactions, ion-solid interactions, pulsed laser annealing, and semiconductor physics and photovoltaic conversion); defects in solids (radiation effects, fracture, and defects and impurities in insulating crystals); transport properties of solids (fast-ion conductors, superconductivity, and physical properties of insulating materials); neutron scattering (small-angle scattering, lattice dynamics, and magnetic properties); crystal growth and characterization (nuclear waste forms, ferroelectric mateirals, high-temperature materials, and special materials); and isotope research materials. Publications and papers are listed

Reactor Engineering Division annual report

International Nuclear Information System (INIS)

1975-02-01

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.)

DNA Copy-Number Control through Inhibition of Replication Fork Progression

Directory of Open Access Journals (Sweden)

Jared T. Nordman

2014-11-01

Full Text Available Proper control of DNA replication is essential to ensure faithful transmission of genetic material and prevent chromosomal aberrations that can drive cancer progression and developmental disorders. DNA replication is regulated primarily at the level of initiation and is under strict cell-cycle regulation. Importantly, DNA replication is highly influenced by developmental cues. In Drosophila, specific regions of the genome are repressed for DNA replication during differentiation by the SNF2 domain-containing protein SUUR through an unknown mechanism. We demonstrate that SUUR is recruited to active replication forks and mediates the repression of DNA replication by directly inhibiting replication fork progression instead of functioning as a replication fork barrier. Mass spectrometry identification of SUUR-associated proteins identified the replicative helicase member CDC45 as a SUUR-associated protein, supporting a role for SUUR directly at replication forks. Our results reveal that control of eukaryotic DNA copy number can occur through the inhibition of replication fork progression.

Environmental and Occupational Safety Division annual progress report for 1984

International Nuclear Information System (INIS)

1985-11-01

Over 950 radiation workers were monitored at ORNL for both internal and external exposure to ionizing radiation and radioactive materials in 1984, and no employee exceeded 50% of the applicable DOE dose limit. No internal exposure exceeded 10% of the maximum permissible organ burden, as determined by in-vivo gamma spectrometry. Dose readings from 5000 TLDs and 136,000 pocket meters were determined, and more than 5800 calibrations were performed on these devices. Approximately 82,000 radioassays were performed; among these were 1500 urinalyses and 3000 radiochemical analyses. Over 3000 calibrations were performed for approximately 2000 portable and fixed survey instruments. Response teams were identified in support of the Radiological Assistance Program (RAP). Documentation, procedures, and equipment for the RAP vehicle were upgraded. A long-range environmental plan was issued early in the year and again in June 1984 to document the scope and justification for each project. The DEM is developing an environmental information system for managing DOE-ORO and ORNL environmental data. Five hundred eighty-four waste disposal requests containing 5769 items were handled by the Hazardous Materials Control Group during 1984. The Office of Operational Safety made significant progress in the completion of Safety Analysis Reports for existing facilities. The Radiation and Safety Surveys Department is becoming increasingly involved in work resulting in facility improvement, repair, or upgrade as well as decontamination and decommissioning of older facilities

Overview of CTR-division control and data acquisition usage at the Los Alamos Scientific Laboratory

International Nuclear Information System (INIS)

Chandler, G.I.; Klare, K.A.; Lillberg, J.W.; Wilkins, R.W.

1979-01-01

Computers have become an integral part of the control and data acquisition systems of several different fusion experiments in the CTR Division. These systems must (1) monitor and/or control approximately 200 to 1000 signals, (2) process from 40 to 250 diagnostic channels with a maximum plasma discharge repetition rate of once every five minutes, and (3) operate in an electrically noisy environment. Small to medium scale minicomputers interfaced to the experiment through CAMAC modules have been used to meet these requirements. System shielding and grounding have been given special consideration. These systems are also used for on-line data analysis and are linked to the local CTR network User Service Center where additional off-line analysis can be performed

The progress report of the Instrumentation and Technological Electronical Division, for 1987

International Nuclear Information System (INIS)

1988-05-01

The 1987 activity report of the CEA Instrumentation and Technological Electronic Division (ITED), is presented. The ITED fields of interest include nuclear, space, health, defense and civil domains. The research development and perspectives are summarized. Concerning materials and components the following research programs are included: silicon integrated circuits, silicon on isolator, common experimental laboratory, mass memory, lasers, photodetection, flat screens, and sensors. In the field of instrumentations and systems, the retained research guidelines are focused on: medical and biological instrumentation, the environment, the nuclear domain. Moreover, the research fields of physics, artificial intelligence and software, production, robots, architecture and integration are also included [fr

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....... The first part tackles the cake cutting problem, where the cake is a metaphor for a heterogeneous divisible resource such as land, time, mineral deposits, and computer memory. We study the equilibria of classical protocols and design an algorithmic framework for reasoning about their game theoretic...

Physics Division progress report for period ending June 30, 1981

International Nuclear Information System (INIS)

1981-11-01

Progress is reported in detail in the following areas: Holifield Heavy-Ion Research Facility, nuclear physics, the UNISOR program, neutron physics, theoretical physics, the Nuclear Data Project, atomic and plasma physics, and high energy physics. Publications are listed. Separate abstracts were prepared for 34 papers

High School Sport Specialization Patterns of Current Division I Athletes

OpenAIRE

Post, Eric G.; Thein-Nissenbaum, Jill M.; Stiffler, Mikel R.; Brooks, M. Alison; Bell, David R.; Sanfilippo, Jennifer L.; Trigsted, Stephanie M.; Heiderscheit, Bryan C.; McGuine, Timothy A.

2016-01-01

Background: Sport specialization is a strategy to acquire superior sport performance in 1 sport but is associated with increased injury risk. Currently, the degree of high school specialization among Division I athletes is unknown. Hypothesis: College athletes will display increased rates of specialization as they progress through their high school careers. Study Design: Descriptive epidemiological study. Level of Evidence: Level 4. Methods: Three hundred forty-three athletes (115 female) rep...

On infinitely divisible semimartingales

DEFF Research Database (Denmark)

Basse-O'Connor, Andreas; Rosiński, Jan

2015-01-01

to non Gaussian infinitely divisible processes. First we show that the class of infinitely divisible semimartingales is so large that the natural analog of Stricker's theorem fails to hold. Then, as the main result, we prove that an infinitely divisible semimartingale relative to the filtration generated...... 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 divisible...

Physics Division progress report for period ending June 30, 1981

Energy Technology Data Exchange (ETDEWEB)

1981-11-01

Progress is reported in detail in the following areas: Holifield Heavy-Ion Research Facility, nuclear physics, the UNISOR program, neutron physics, theoretical physics, the Nuclear Data Project, atomic and plasma physics, and high energy physics. Publications are listed. Separate abstracts were prepared for 34 papers. (WHK)

Parkin suppresses Drp1-independent mitochondrial division

Energy Technology Data Exchange (ETDEWEB)

Roy, Madhuparna, E-mail: mroy17@jhmi.edu; Itoh, Kie, E-mail: kito5@jhmi.edu; Iijima, Miho, E-mail: miijima@jhmi.edu; Sesaki, Hiromi, E-mail: hsesaki@jhmi.edu

2016-07-01

The cycle of mitochondrial division and fusion disconnect and reconnect individual mitochondria in cells to remodel this energy-producing organelle. Although dynamin-related protein 1 (Drp1) plays a major role in mitochondrial division in cells, a reduced level of mitochondrial division still persists even in the absence of Drp1. It is unknown how much Drp1-mediated mitochondrial division accounts for the connectivity of mitochondria. The role of a Parkinson’s disease-associated protein—parkin, which biochemically and genetically interacts with Drp1—in mitochondrial connectivity also remains poorly understood. Here, we quantified the number and connectivity of mitochondria using mitochondria-targeted photoactivatable GFP in cells. We show that the loss of Drp1 increases the connectivity of mitochondria by 15-fold in mouse embryonic fibroblasts (MEFs). While a single loss of parkin does not affect the connectivity of mitochondria, the connectivity of mitochondria significantly decreased compared with a single loss of Drp1 when parkin was lost in the absence of Drp1. Furthermore, the loss of parkin decreased the frequency of depolarization of the mitochondrial inner membrane that is caused by increased mitochondrial connectivity in Drp1-knockout MEFs. Therefore, our data suggest that parkin negatively regulates Drp1-indendent mitochondrial division. -- Highlights: •A Drp1-mediated mechanism accounts for ∼95% of mitochondrial division. •Parkin controls the connectivity of mitochondria via a mechanism that is independent of Drp1. •In the absence of Drp1, connected mitochondria transiently depolarize. •The transient depolarization is independent of calcium signaling and uncoupling protein 2.

Parkin suppresses Drp1-independent mitochondrial division

International Nuclear Information System (INIS)

Roy, Madhuparna; Itoh, Kie; Iijima, Miho; Sesaki, Hiromi

2016-01-01

The cycle of mitochondrial division and fusion disconnect and reconnect individual mitochondria in cells to remodel this energy-producing organelle. Although dynamin-related protein 1 (Drp1) plays a major role in mitochondrial division in cells, a reduced level of mitochondrial division still persists even in the absence of Drp1. It is unknown how much Drp1-mediated mitochondrial division accounts for the connectivity of mitochondria. The role of a Parkinson’s disease-associated protein—parkin, which biochemically and genetically interacts with Drp1—in mitochondrial connectivity also remains poorly understood. Here, we quantified the number and connectivity of mitochondria using mitochondria-targeted photoactivatable GFP in cells. We show that the loss of Drp1 increases the connectivity of mitochondria by 15-fold in mouse embryonic fibroblasts (MEFs). While a single loss of parkin does not affect the connectivity of mitochondria, the connectivity of mitochondria significantly decreased compared with a single loss of Drp1 when parkin was lost in the absence of Drp1. Furthermore, the loss of parkin decreased the frequency of depolarization of the mitochondrial inner membrane that is caused by increased mitochondrial connectivity in Drp1-knockout MEFs. Therefore, our data suggest that parkin negatively regulates Drp1-indendent mitochondrial division. -- Highlights: •A Drp1-mediated mechanism accounts for ∼95% of mitochondrial division. •Parkin controls the connectivity of mitochondria via a mechanism that is independent of Drp1. •In the absence of Drp1, connected mitochondria transiently depolarize. •The transient depolarization is independent of calcium signaling and uncoupling protein 2.

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

International Nuclear Information System (INIS)

Anon.

1988-01-01

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 CO 2 and the greenhouse effect, and biological markers of environmental contaminants. Abstracts are included for 151 papers

Conjoint utility analysis of technical maturity and project progress of construction project

Directory of Open Access Journals (Sweden)

Ma Wei

2016-01-01

Full Text Available In this paper, taking construction project as the research object, the relationship between the project maturity index calculated by the construction project technical risks with different fine degree and the project progress index is studied, and the equilibrium relationship between the Party A’s utility curve and the Party B’s cost curve of using project maturity index and project progress index as the research variables is analyzed. The results show that, when the construction project technical risk division is more precise, the conjoint utility of the project's technical maturity index and the project progress is higher, and the project’s Party A and Party B two sides are closer to the optimal equilibrium. This shows that the construction project technical risk must be finely divided, and managed and controlled respectively, which will help to improve the conjoint utility of the project Party A and Party B two sides.

Progress at LAMPF [Los Alamos Meson Physics Facility], January-December 1987

International Nuclear Information System (INIS)

Poelakker, K.

1988-09-01

This report is the annual progress report of MP Division of the Los Alamos National Laboratory. Included are brief reports on research done at LAMPF by researchers from other institutions and other Los Alamos Divisions. These reports included the following topics: Nuclear and particle physics; Atomic and molecular physics; Materials science; Radiation-effects studies; Biomedical research and instrumentation; Nuclear chemistry; Radioisotope production and accelerator facilities development and operation

Division of Biological and Medical Research annual report, 1979. [Lead abstract

Energy Technology Data Exchange (ETDEWEB)

Rosenthal, M.W. (ed.)

1979-01-01

Separate abstracts were prepared for 14 of the 20 sections included in this progress report. The other 6 sections include: introductory statements by the division director; descriptions of the animal, computer, electron microscope, and radiation support facilities; a listing of the educational activities, divisional seminars, and oral presentations by staff members; and divisional staff publications. An author index to the report is included. (ERB)

Division of Finance Homepage

Science.gov (United States)

Top Department of Administration logo Alaska Department of Administration Division of Finance Search Search the Division of Finance site DOF State of Alaska Finance Home Content Area Accounting Charge Cards You are here Administration / Finance Division of Finance Updates IRIS Expenditure Object Codes

Annual progress report, July 1, 1979-June 30, 1980

International Nuclear Information System (INIS)

1980-01-01

Research progress is reported for the year 1979-1980. The report is divided into sections dealing individually with the divisions of Biomolecular and Cellular Science, Environmental Biology, and Nuclear Medicine. The sections have been individually entered into EDB

Fusion energy division annual progress report, period ending December 31, 1980

Energy Technology Data Exchange (ETDEWEB)

1981-11-01

The ORNL Program encompasses most aspects of magnetic fusion research including research on two magnetic confinement programs (tokamaks and ELMO bumpy tori); the development of the essential technologies for plasma heating, fueling, superconducting magnets, and materials; the development of diagnostics; the development of atomic physics and radiation effect data bases; the assessment of the environmental impact of magnetic fusion; the physics and engineering of present-generation devices; and the design of future devices. The integration of all of these activities into one program is a major factor in the success of each activity. An excellent example of this integration is the extremely successful application of neutral injection heating systems developed at ORNL to tokamaks both in the Fusion Energy Division and at Princeton Plasma Physics Laboratory (PPPL). The goal of the ORNL Fusion Program is to maintain this balance between plasma confinement, technology, and engineering activities.

Fusion energy division annual progress report, period ending December 31, 1980

International Nuclear Information System (INIS)

1981-11-01

The ORNL Program encompasses most aspects of magnetic fusion research including research on two magnetic confinement programs (tokamaks and ELMO bumpy tori); the development of the essential technologies for plasma heating, fueling, superconducting magnets, and materials; the development of diagnostics; the development of atomic physics and radiation effect data bases; the assessment of the environmental impact of magnetic fusion; the physics and engineering of present-generation devices; and the design of future devices. The integration of all of these activities into one program is a major factor in the success of each activity. An excellent example of this integration is the extremely successful application of neutral injection heating systems developed at ORNL to tokamaks both in the Fusion Energy Division and at Princeton Plasma Physics Laboratory (PPPL). The goal of the ORNL Fusion Program is to maintain this balance between plasma confinement, technology, and engineering activities

Economic Benefit from Progressive Integration of Scheduling and Control for Continuous Chemical Processes

Directory of Open Access Journals (Sweden)

Logan D. R. Beal

2017-12-01

Full Text Available Performance of integrated production scheduling and advanced process control with disturbances is summarized and reviewed with four progressive stages of scheduling and control integration and responsiveness to disturbances: open-loop segregated scheduling and control, closed-loop segregated scheduling and control, open-loop scheduling with consideration of process dynamics, and closed-loop integrated scheduling and control responsive to process disturbances and market fluctuations. Progressive economic benefit from dynamic rescheduling and integrating scheduling and control is shown on a continuously stirred tank reactor (CSTR benchmark application in closed-loop simulations over 24 h. A fixed horizon integrated scheduling and control formulation for multi-product, continuous chemical processes is utilized, in which nonlinear model predictive control (NMPC and continuous-time scheduling are combined.

Nuclear Science Division 1994 annual report

International Nuclear Information System (INIS)

Myers, W.D.

1995-06-01

This report describes the activities of the Nuclear Science Division for the period of January 1, 1994, to December 31, 1994. This was a time of significant accomplishment for all of the programs in the Division. Assembly of the solar neutrino detector at the Sudbury Neutrino Observatory is well under way. All of the components fabricated by LBL were shipped to Sudbury early in the year and our efforts are now divided between assisting the assembly of the detector and preparing software for data analysis once the detector is operational in 1996. Much of the activity at the 88-Inch Cyclotron centered on Gammasphere. The open-quotes early implementationclose quotes phase of the detector ended in September. This phase was extremely successful, involving over 60 experiments with nearly 200 users from 37 institutions worldwide. The mechanical structure was installed and the final electronic system is expected to operate in March 1995. The Division concurrently hosted a conference on physics for large γ-ray detector arrays at the Clark Kerr Campus at UC Berkeley in August. This was a very successful meeting, reflecting the enthusiasm for this field worldwide. Also at the Cyclotron, the progress toward weak interaction experiments using ultra-thin sources passed a major milestone with the trapping of radioactive 21 Na atoms. We are now engaged in a major upgrade of the experimental area and the outlook is very promising for these novel experiments. Another highlight of research at the Cyclotron was the confirmation of element 106. This development allowed the original LLNL/LBL discovery team to move forward with their proposal to name this element seaborgium

Nuclear Science Division 1994 annual report

Energy Technology Data Exchange (ETDEWEB)

Myers, W.D. [ed.

1995-06-01

This report describes the activities of the Nuclear Science Division for the period of January 1, 1994, to December 31, 1994. This was a time of significant accomplishment for all of the programs in the Division. Assembly of the solar neutrino detector at the Sudbury Neutrino Observatory is well under way. All of the components fabricated by LBL were shipped to Sudbury early in the year and our efforts are now divided between assisting the assembly of the detector and preparing software for data analysis once the detector is operational in 1996. Much of the activity at the 88-Inch Cyclotron centered on Gammasphere. The {open_quotes}early implementation{close_quotes} phase of the detector ended in September. This phase was extremely successful, involving over 60 experiments with nearly 200 users from 37 institutions worldwide. The mechanical structure was installed and the final electronic system is expected to operate in March 1995. The Division concurrently hosted a conference on physics for large {gamma}-ray detector arrays at the Clark Kerr Campus at UC Berkeley in August. This was a very successful meeting, reflecting the enthusiasm for this field worldwide. Also at the Cyclotron, the progress toward weak interaction experiments using ultra-thin sources passed a major milestone with the trapping of radioactive {sup 21}Na atoms. We are now engaged in a major upgrade of the experimental area and the outlook is very promising for these novel experiments. Another highlight of research at the Cyclotron was the confirmation of element 106. This development allowed the original LLNL/LBL discovery team to move forward with their proposal to name this element seaborgium.

Argonne Physics Division Colloquium

Science.gov (United States)

[Argonne Logo] [DOE Logo] Physics Division Home News Division Information Contact PHY Org Chart Physics Division Colloquium Auditorium, Building 203, Argonne National Laboratory Fridays at 11:00 AM 2017 : Sereres Johnston 15 Sep 2017 Joint Physics and Materials Science Colloquium J. C. Séamus Davis, Cornell

Annual progress report, July 1, 1979-June 30, 1980

Energy Technology Data Exchange (ETDEWEB)

1980-01-01

Research progress is reported for the year 1979-1980. The report is divided into sections dealing individually with the divisions of Biomolecular and Cellular Science, Environmental Biology, and Nuclear Medicine. The sections have been individually entered into EDB. (ACR)

Divisible ℤ-modules

Directory of Open Access Journals (Sweden)

Futa Yuichi

2016-03-01

Full Text Available In this article, we formalize the definition of divisible ℤ-module and its properties in the Mizar system [3]. We formally prove that any non-trivial divisible ℤ-modules are not finitely-generated.We introduce a divisible ℤ-module, equivalent to a vector space of a torsion-free ℤ-module with a coefficient ring ℚ. ℤ-modules are important for lattice problems, LLL (Lenstra, Lenstra and Lovász base reduction algorithm [15], cryptographic systems with lattices [16] and coding theory [8].

Fusion Energy Division progress report, January 1, 1992--December 31, 1994

Energy Technology Data Exchange (ETDEWEB)

Sheffield, J.; Baker, C.C.; Saltmarsh, M.J.; Shannon, T.E.

1995-09-01

The report covers all elements of the ORNL Fusion Program, including those implemented outside the division. Non-fusion work within FED, much of which is based on the application of fusion technologies and techniques, is also discussed. The ORNL Fusion Program includes research and development in most areas of magnetic fusion research. The program is directed toward the development of fusion as an energy source and is a strong and vital component of both the US and international fusion efforts. The research discussed in this report includes: experimental and theoretical research on magnetic confinement concepts; engineering and physics of existing and planned devices; development and testing of plasma diagnostic tools and techniques; assembly and distribution of databases on atomic physics and radiation effects; development and testing of technologies for heating and fueling fusion plasmas; and development and testing of materials for fusion devices. The activities involving the use of fusion technologies and expertise for non-fusion applications ranged from semiconductor manufacturing to environmental management.

Energy Division annual progress report for period ending September 30, 1976

Energy Technology Data Exchange (ETDEWEB)

1977-04-01

A summmary of the work in each section of the Energy Division at ORNL is given and can be characterized by two themes: (1) environmental assessment, including social and economic considerations, and (2) fuel conservation and energy conversion efficiency. The first theme encompasses the preparation of environmental statements and assessments for nuclear power plants and other energy facilities (Chap. 2) as well as regional analyses of social, economic, and environmental effects due to energy system development patterns (Chap. 3). The second theme characterizes a broad scope of conservation-related work, including efforts to understand energy demand patterns and to develop technologies and arrangements for reducing these demands (Chap. 4). This theme also encompasses research directed at improving both high- and low-temperature thermodynamic cycles driven by solar, geothermal, or fossil energy sources (Chaps. 5 and 6). A listing of publications and oral presentations complete the report. A separate abstract was prepared for each major section or program. (MCW)

Fusion Energy Division progress report, January 1, 1992--December 31, 1994

International Nuclear Information System (INIS)

Sheffield, J.; Baker, C.C.; Saltmarsh, M.J.; Shannon, T.E.

1995-09-01

The report covers all elements of the ORNL Fusion Program, including those implemented outside the division. Non-fusion work within FED, much of which is based on the application of fusion technologies and techniques, is also discussed. The ORNL Fusion Program includes research and development in most areas of magnetic fusion research. The program is directed toward the development of fusion as an energy source and is a strong and vital component of both the US and international fusion efforts. The research discussed in this report includes: experimental and theoretical research on magnetic confinement concepts; engineering and physics of existing and planned devices; development and testing of plasma diagnostic tools and techniques; assembly and distribution of databases on atomic physics and radiation effects; development and testing of technologies for heating and fueling fusion plasmas; and development and testing of materials for fusion devices. The activities involving the use of fusion technologies and expertise for non-fusion applications ranged from semiconductor manufacturing to environmental management

Gain transient control for wavelength division multiplexed access networks using semiconductor optical amplifiers

DEFF Research Database (Denmark)

Gibbon, Timothy Braidwood; Osadchiy, Alexey Vladimirovich; Kjær, Rasmus

2009-01-01

Gain transients can severely hamper the upstream network performance in wavelength division multiplexed (WDM) access networks featuring erbium doped fiber amplifiers (EDFAs) or Raman amplification. We experimentally demonstrate for the first time using 10 Gb/s fiber transmission bit error rate...... measurements how a near-saturated semiconductor optical amplifier (SOA) can be used to control these gain transients. An SOA is shown to reduce the penalty of transients originating in an EDFA from 2.3 dB to 0.2 dB for 10 Gb/s transmission over standard single mode fiber using a 231-1 PRBS pattern. The results...... suggest that a single SOA integrated within a WDM receiver at the metro node could offer a convenient all-optical solution for upstream transient controlin WDM access networks....

Progress in Aluminum Electrolysis Control and Future Direction for Smart Aluminum Electrolysis Plant

Science.gov (United States)

Zhang, Hongliang; Li, Tianshuang; Li, Jie; Yang, Shuai; Zou, Zhong

2017-02-01

The industrial aluminum reduction cell is an electrochemistry reactor that operates under high temperatures and highly corrosive conditions. However, these conditions have restricted the measurement of key control parameters, making the control of aluminum reduction cells a difficult problem in the industry. Because aluminum electrolysis control systems have a significant economic influence, substantial research has been conducted on control algorithms, control systems and information systems for aluminum reduction cells. This article first summarizes the development of control systems and then focuses on the progress made since 2000, including alumina concentration control, temperature control and electrolyte molecular ratio control, fault diagnosis, cell condition prediction and control system expansion. Based on these studies, the concept of a smart aluminum electrolysis plant is proposed. The frame construction, key problems and current progress are introduced. Finally, several future directions are discussed.

Materials division facilities and equipment

International Nuclear Information System (INIS)

Biest, O. v.d.

1984-01-01

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

Biology Division progress report, June 1, 1980-July 31, 1982

Energy Technology Data Exchange (ETDEWEB)

1982-12-01

Highlights of progress for the period June 1980 through July 1982 are summarized. Discussions of projects are presented under the following headings: molecular and cellular sciences; cellular and comparative mutagenesis; mammalian genetics and teratology; toxicology; and carcinogenesis. In addition this report includes an outline of educational activities. Separate abstracts have been prepared for individual technical reports for inclusion in the Energy Data Base. (RJC)

Learning by Doing: the Progressive Novella Project.

Science.gov (United States)

Conroy, Michael G.

1996-01-01

States that the Progressive Novella Project for high school students involves the collaborative writing of a 35-50 page novella. Explains that prior to the actual writing process, students are educated in the basic elements of fiction writing. Describes the division of labor into groups. Comments that the results of the project are invariably…

Fission yeast cells undergo nuclear division in the absence of spindle microtubules.

Directory of Open Access Journals (Sweden)

Stefania Castagnetti

2010-10-01

Full Text Available Mitosis in eukaryotic cells employs spindle microtubules to drive accurate chromosome segregation at cell division. Cells lacking spindle microtubules arrest in mitosis due to a spindle checkpoint that delays mitotic progression until all chromosomes have achieved stable bipolar attachment to spindle microtubules. In fission yeast, mitosis occurs within an intact nuclear membrane with the mitotic spindle elongating between the spindle pole bodies. We show here that in fission yeast interference with mitotic spindle formation delays mitosis only briefly and cells proceed to an unusual nuclear division process we term nuclear fission, during which cells perform some chromosome segregation and efficiently enter S-phase of the next cell cycle. Nuclear fission is blocked if spindle pole body maturation or sister chromatid separation cannot take place or if actin polymerization is inhibited. We suggest that this process exhibits vestiges of a primitive nuclear division process independent of spindle microtubules, possibly reflecting an evolutionary intermediate state between bacterial and Archeal chromosome segregation where the nucleoid divides without a spindle and a microtubule spindle-based eukaryotic mitosis.

Progress report for 1975-1977 of the Biochemistry and Food Technology Division

International Nuclear Information System (INIS)

1978-01-01

Research and development work carried out during the period 1975-77 in the Biochemistry and Food Technology Division of the Bhabha Atomic Research Centre, is reported. In addition to the studies on macromolecular aspects of structure and function of chemical components e.g. proteins and enzymes of living systems and food microbiology, major studies relate to: (1) safe storage of wheat irradiated for disinfestation, (2) compositional changes in wheat exposed to high dose of radiation, (3) sprout inhibition of irradiated potatoes during storage under tropical conditions, (4) induction of phenylalanine ammonium lyase in irradiated potatoes, (5) preservation of mangoes and bananas by heat-radiation combination, (6) extension of shelf-life of fish by radurization, (7) wholesomeness of irradiated fish and (8) genetic toxicological evaluation of irradiated foods. (M.G.B.)

Control of cell division and the spatial localization of assembled gene products in Caulobacter crescentus

International Nuclear Information System (INIS)

Nathan, P.D.

1988-01-01

Experiments are described that examine the role of penicillin-binding proteins (PBPs) in the regulation of cell division in Caulobacter crescentus; and the spatial localization of methyl-accepting chemotaxis proteins (MCPs) in C. crescentus swarmer and predivisional cells. In the analysis of PBP function, in vivo and in vitro assays are used to directly label C. crescentus PBPs with [ 3 H] penicillin G in wild type strain CB15, in a series of conditional cell division mutants and in new temperature sensitive cephalosporin C resistant mutants PC8002 and PC8003. 14 PBPs are characterized and a high molecular weight PBP (PBP 1B) that is required for cell division is identified. PBP 1B competes for β-lactams that induce filament formation and may be a high affinity binding protein. A second high molecular weight PBP (PBP 1C) is also associated with defective cell division. The examination of PBP patterns in synchronous swarmer cells reveals that the in vivo activity of PBP 1B and PBP 1C increases at the time that the cell division pathway is initiated. None of the PBPs, however, appear to be differentially localized in the C. crescentus cell. In the analysis of MCP localization, in vivo and in vitro assays are used to directly label C. crescentus MCPs with methyl- 3 H. MCPs are examined in flagellated and non-flagellated vesicles prepared from cells by immunoaffinity chromatography

Pest Control Section Biochemical Group, Progress Report 1982-86

International Nuclear Information System (INIS)

1988-01-01

Reserch efforts in the Pest Control Section, BARC, a continuator of insect sterilization and pest control section of the erstwhile Biology and Agriculture Division, were continued to develop integrated management practices for the control of important insect pests of agricultural and medical importance. Insect pests chosen are, ubiquitous potato tuberworm, a serious pest of potatoes, cotton bollworms with particular reference to spotted bollworms and a mosquito (Culex fatigans), a vector of filariasis. Keeping these insects as targets, research activities have been concentrated in the fields of biological control with parasities, pathogens and sterile insects, sex pheromones and insect plant interaction with a view to integrate pest management programme. Besides, the research activity also encompasses investigations of basic nature in the fields of insect sex pheromones, insect pathology and insect plant interaction. Studies on insect pheromones relate to the modifying influence of abiotic and biotic factors of the environment on pheromone production and perception and the possibility of insect developing resistance to pheromones. Studies in the field of insect plant interaction are directed towards identifying weak links in the insect plant relationship with a view to exploit them for developing control. Basic studies in the field of insect pathology relate to isolation and identification of entomopathogens, source of their pathogenecity, improvement in their virulence and formulation of cheaper and potent microbial insecticides. This report pertains to the period 1982-86. (Orig.). 11 tables, 5 figures

The Division of Labor in Lesbian, Gay, and Heterosexual New Adoptive Parents

Science.gov (United States)

Goldberg, Abbie E.; Smith, JuliAnna Z.; Perry-Jenkins, Maureen

2012-01-01

Little research has investigated the division of child care and housework in adoptive or lesbian/gay parent families, yet these contexts "control for" family characteristics such as biological relatedness and parental gender differences known to be linked to family work. This study examined predictors (measured preadoption) of the division of…

The effects of pulse cycloheximide treatments on the light-induced recovery of mitotic divisions in antheridial filaments of Chara vulgaris

Directory of Open Access Journals (Sweden)

Maria Kwiatkowska

2014-01-01

Full Text Available Within the proliferative period of spermatogenesis in Chara vulgaris, the progression throughout successive cell divisions in antheridial filaments is greatly influenced by changes in photoperiodic conditions. The extended (4-day period of total darkness brings about cell cycle arrest in the early G2 phase. The recovery of mitosis requires about 20 hours of exposition to light. In the present study, a series of 8 pulse incubations of plants in cycloheximide (Cx; 2.5 mg/I, 2.5 h each pulse were performed within the period elapsing till the resumption of mitotic divisions. Depending on the time of treatment, the effects induced by Cx vary considerably. Within the first 10 hs of exposition to light, incubations with Cx result in the delays of mitoses; within the period between the 10th and the 17th h, mitotic divisions become blocked, and, following the 17.5 h of light-induced recovery, no influence of Cx is noticed on mitotic activity, as compared with the untreaed control plants. The obtained results provide a starting point for the characteristic of proteins synthesized during the G2 phase and a preliminary study on those mechanisms, which become engaged in the regulation of the G1-deficient cell cycle evidenced in antheridial filaments of Chara.

Isotope and Nuclear Chemistry Division annual report, FY 1983

International Nuclear Information System (INIS)

Heiken, J.H.; Lindberg, H.A.

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

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.

Isotope and Nuclear Chemistry Division annual report, FY 1984

International Nuclear Information System (INIS)

Heiken, J.H.

1985-04-01

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

Technical activities, 1990: Surface Science Division

International Nuclear Information System (INIS)

Powell, C.J.

1991-05-01

The report summarizes technical activities and accomplishments of the NIST Surface Science Division during Fiscal Year 1990. Overviews are presented of the Division and of its three constituent groups: Surface Dynamical Processes, Thin Films and Interfaces, and Surface Spectroscopies and Standards. These overviews are followed by reports of selected technical accomplishments during the year. A summary is given of Division outputs and interactions that includes lists of publications, talks, committee assignments, seminars (including both Division seminars and Interface Science seminars arranged through the Division), conferences organized, and a standard reference material certified. Finally, lists are given of Division staff and of guest scientists who have worked in the Division during the past year

Quality Control in Primary Schools: Progress from 2001-2006

Science.gov (United States)

Hofman, Roelande H.; de Boom, Jan; Hofman, W. H. Adriaan

2010-01-01

This article presents findings of research into the quality control (QC) of schools from 2001-2006. In 2001 several targets for QC were set and the progress of 939 primary schools is presented. Furthermore, using cluster analysis, schools are classified into four QC-types that differ in their focus on school (self) evaluation and school…

A dynamic new group within Human Resources Division

CERN Multimedia

2003-01-01

Since 1st May CERN's training and development and personnel management teams have been fused into a new group called Personnel Management and Development. The new Personnel Management and Development Group is responsible for career advancement and management, recruitment, remuneration and for language, communication, management, academic and technical training, keys to a sense of greater well-being and to career progression. The new group was born on 1st May out of the fusion of the "Personnel Management" and "Training and Development" Groups within CERN's Human Resources Division. Its aim is to offer a practical and easily accessible service to assist the members of the personnel and supervisors to manage careers more harmoniously, to make progress and to continue to learn on the job. With Sue Foffano as its Group Leader, the Group comprises four sections: Academic and Technical Training under the guiding hand of Mick Storr; Management, Communication and Language Training headed by Sudeshna Datta-Cockeril...

Engineering Physics and Mathematics Division progress report for period ending September 30, 1987

Energy Technology Data Exchange (ETDEWEB)

1987-12-01

This report provides an archival record of the activities of the Engineering Physics and Mathematics Division during the period June 30, 1985 through September 30, 1987. Work in Mathematical Sciences continues to include applied mathematics research, statistics research, and computer science. Nuclear-data measurements and evaluations continue for fusion reactors, fission reactors, and other nuclear systems. Also discussed are long-standing studies of fission-reactor shields through experiments and related analysis, of accelerator shielding, and of fusion-reactor neutronics. Work in Machine Intelligence continues to feature the development of an autonomous robot. The last descriptive part of this report reflects the work in our Engineering Physics Information Center, which again concentrates primarily upon radiation-shielding methods and related data.

Engineering Physics and Mathematics Division progress report for period ending September 30, 1987

International Nuclear Information System (INIS)

1987-12-01

This report provides an archival record of the activities of the Engineering Physics and Mathematics Division during the period June 30, 1985 through September 30, 1987. Work in Mathematical Sciences continues to include applied mathematics research, statistics research, and computer science. Nuclear-data measurements and evaluations continue for fusion reactors, fission reactors, and other nuclear systems. Also discussed are long-standing studies of fission-reactor shields through experiments and related analysis, of accelerator shielding, and of fusion-reactor neutronics. Work in Machine Intelligence continues to feature the development of an autonomous robot. The last descriptive part of this report reflects the work in our Engineering Physics Information Center, which again concentrates primarily upon radiation-shielding methods and related data

Fusion Energy Division annual progress report period ending December 31, 1986

Energy Technology Data Exchange (ETDEWEB)

Morgan, O.B. Jr.; Berry, L.A.; Sheffield, J.

1987-10-01

This annual report on fusion energy discusses the progress on work in the following main topics: toroidal confinement experiments; atomic physics and plasma diagnostics development; plasma theory and computing; plasma-materials interactions; plasma technology; superconducting magnet development; fusion engineering design center; materials research and development; and neutron transport. (LSP)

Fusion Energy Division annual progress report period ending December 31, 1986

International Nuclear Information System (INIS)

Morgan, O.B. Jr.; Berry, L.A.; Sheffield, J.

1987-10-01

This annual report on fusion energy discusses the progress on work in the following main topics: toroidal confinement experiments; atomic physics and plasma diagnostics development; plasma theory and computing; plasma-materials interactions; plasma technology; superconducting magnet development; fusion engineering design center; materials research and development; and neutron transport

Physics division annual report 2005

International Nuclear Information System (INIS)

Glover, J.

2007-01-01

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 252 No that helps pin down the single particle structure expected for superheavy elements, and a new low-background measurement of 16 N beta-decay to determine the 12 C(α, γ) 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 isotopes were trapped in an atom trap for

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

Glycemic control and alveolar bone loss progression in type 2 diabetes.

Science.gov (United States)

Taylor, G W; Burt, B A; Becker, M P; Genco, R J; Shlossman, M

1998-07-01

This study tested the hypothesis that the risk for alveolar bone loss is greater, and bone loss progression more severe, for subjects with poorly controlled (PC) type 2 diabetes mellitus (type 2 DM) compared to those without type 2 DM or with better controlled (BC) type 2 DM. The PC group had glycosylated hemoglobin (HbA1) > or = 9%; the BC group had HbA1 or = 75% were used to identify the worst bone score (WBS) in the dentition. Change in worst bone score at follow-up, the outcome, was specified on a 4-category ordinal scale as no change, or a 1-, 2-, 3-, or 4-category increase over baseline WBS (WBS1). Poorly controlled diabetes, age, calculus, time to follow-up examination, and WBS1 were statistically significant explanatory variables in ordinal logistic regression models. Poorly controlled type 2 DM was positively associated with greater risk for a change in bone score (compared to subjects without type 2 DM) when the covariates were included in the model. The cumulative odds ratio (COR) at each threshold of the ordered response was 11.4 (95% CI = 2.5, 53.3). When contrasted with subjects with BC type 2 DM, the COR for those in the PC group was 5.3 (95% CI = 0.8, 53.3). The COR for subjects with BC type 2 DM was 2.2 (95% CI = 0.7, 6.5), when contrasted to those without type 2 DM. These results suggest that poorer glycemic control leads to both an increased risk for alveolar bone loss and more severe progression over those without type 2 DM, and that there may be a gradient, with the risk for bone loss progression for those with better controlled type 2 DM intermediate to the other 2 groups.

Analytical Chemistry Division annual progress report for period ending December 31, 1979

International Nuclear Information System (INIS)

Shults, W.D.; Lyon, W.S.

1980-05-01

The progress is reported in the following sections: analytical methodology, mass and emission spectrometry, technical support, bio-organic analysis, nuclear and radiochemical analysis, and quality assurance

Biology Division progress report, October 1, 1983-September 30, 1984

International Nuclear Information System (INIS)

Griesmer, R.A.

1985-01-01

The report provides summaries of the aims, scope and progress from October 1983 through September 1984. Major interest was focused on the health effects of neutron- and heavy-ion radiations on animals with particular attention to the carcinogenic responses to low dose levels and to the RBE of various forms of radiation. Among chemical agents, activities concentrated on evaluating and understanding the toxicological interations when mammals are exposed to complex mixtures, either concurrently or successively. Separate abstracts have been prepared for individual sections

Dendrimer-Based Selective Proteostasis-Inhibition Strategy to Control NSCLC Growth and Progression.

Directory of Open Access Journals (Sweden)

Kyla Walworth

Full Text Available Elevated valosin containing protein (VCP/p97 levels promote the progression of non-small cell lung carcinoma (NSCLC. Although many VCP inhibitors are available, most of these therapeutic compounds have low specificity for targeted tumor cell delivery. Hence, the primary aim of this study was to evaluate the in vitro efficacy of dendrimer-encapsulated potent VCP-inhibitor drug in controlling non-small cell lung carcinoma (NSCLC progression. The VCP inhibitor(s (either in their pure form or encapsulated in generation-4 PAMAM-dendrimer with hydroxyl surface were tested for their in vitro efficacy in modulating H1299 (NSCLC cells proliferation, migration, invasion, apoptosis and cell cycle progression. Our results show that VCP inhibition by DBeQ was significantly more potent than NMS-873 as evident by decreased cell proliferation (p<0.0001, MTT-assay and migration (p<0.05; scratch-assay, and increased apoptosis (p<0.05; caspase-3/7-assay as compared to untreated control cells. Next, we found that dendrimer-encapsulated DBeQ (DDNDBeQ treatment increased ubiquitinated-protein accumulation in soluble protein-fraction (immunoblotting of H1299 cells as compared to DDN-control, implying the effectiveness of DBeQ in proteostasis-inhibition. We verified by immunostaining that DDNDBeQ treatment increases accumulation of ubiquitinated-proteins that co-localizes with an ER-marker, KDEL. We observed that proteostasis-inhibition with DDNDBeQ, significantly decreased cell migration rate (scratch-assay and transwell-invasion as compared to the control-DDN treatment (p<0.05. Moreover, DDNDBeQ treatment showed a significant decrease in cell proliferation (p<0.01, MTT-assay and increased caspase-3/7 mediated apoptotic cell death (p<0.05 as compared to DDN-control. This was further verified by cell cycle analysis (propidium-iodide-staining that demonstrated significant cell cycle arrest in the G2/M-phase (p<0.001 by DDNDBeQ treatment as compared to control

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.

Analytical Chemistry Division annual progress report for period ending December 31, 1979

Energy Technology Data Exchange (ETDEWEB)

Shults, W.D.; Lyon, W.S. (ed.)

1980-05-01

The progress is reported in the following sections: analytical methodology, mass and emission spectrometry, technical support, bio-organic analysis, nuclear and radiochemical analysis, and quality assurance. (DLC)

Autonomous model protocell division driven by molecular replication.

Science.gov (United States)

Taylor, J W; Eghtesadi, S A; Points, L J; Liu, T; Cronin, L

2017-08-10

The coupling of compartmentalisation with molecular replication is thought to be crucial for the emergence of the first evolvable chemical systems. Minimal artificial replicators have been designed based on molecular recognition, inspired by the template copying of DNA, but none yet have been coupled to compartmentalisation. Here, we present an oil-in-water droplet system comprising an amphiphilic imine dissolved in chloroform that catalyses its own formation by bringing together a hydrophilic and a hydrophobic precursor, which leads to repeated droplet division. We demonstrate that the presence of the amphiphilic replicator, by lowering the interfacial tension between droplets of the reaction mixture and the aqueous phase, causes them to divide. Periodic sampling by a droplet-robot demonstrates that the extent of fission is increased as the reaction progresses, producing more compartments with increased self-replication. This bridges a divide, showing how replication at the molecular level can be used to drive macroscale droplet fission.Coupling compartmentalisation and molecular replication is essential for the development of evolving chemical systems. Here the authors show an oil-in-water droplet containing a self-replicating amphiphilic imine that can undergo repeated droplet division.

Mathematics and statistics research department. Progress report, period ending June 30, 1981

Energy Technology Data Exchange (ETDEWEB)

Lever, W.E.; Kane, V.E.; Scott, D.S.; Shepherd, D.E.

1981-09-01

This report is the twenty-fourth in the series of progress reports of the Mathematics and Statistics Research Department of the Computer Sciences Division, Union Carbide Corporation - Nuclear Division (UCC-ND). Part A records research progress in biometrics research, materials science applications, model evaluation, moving boundary problems, multivariate analysis, numerical linear algebra, risk analysis, and complementary areas. Collaboration and consulting with others throughout the UCC-ND complex are recorded in Part B. Included are sections on biology and health sciences, chemistry, energy, engineering, environmental sciences, health and safety research, materials sciences, safeguards, surveys, and uranium resource evaluation. Part C summarizes the various educational activities in which the staff was engaged. Part D lists the presentations of research results, and Part E records the staff's other professional activities during the report period.

Mathematics and statistics research department. Progress report, period ending June 30, 1981

International Nuclear Information System (INIS)

Lever, W.E.; Kane, V.E.; Scott, D.S.; Shepherd, D.E.

1981-09-01

This report is the twenty-fourth in the series of progress reports of the Mathematics and Statistics Research Department of the Computer Sciences Division, Union Carbide Corporation - Nuclear Division (UCC-ND). Part A records research progress in biometrics research, materials science applications, model evaluation, moving boundary problems, multivariate analysis, numerical linear algebra, risk analysis, and complementary areas. Collaboration and consulting with others throughout the UCC-ND complex are recorded in Part B. Included are sections on biology and health sciences, chemistry, energy, engineering, environmental sciences, health and safety research, materials sciences, safeguards, surveys, and uranium resource evaluation. Part C summarizes the various educational activities in which the staff was engaged. Part D lists the presentations of research results, and Part E records the staff's other professional activities during the report period

Biology Division progress report, October 1, 1983-September 30, 1984

Energy Technology Data Exchange (ETDEWEB)

Griesmer, R.A.

1985-01-01

The report provides summaries of the aims, scope and progress from October 1983 through September 1984. Major interest was focused on the health effects of neutron- and heavy-ion radiations on animals with particular attention to the carcinogenic responses to low dose levels and to the RBE of various forms of radiation. Among chemical agents, activities concentrated on evaluating and understanding the toxicological interations when mammals are exposed to complex mixtures, either concurrently or successively. Separate abstracts have been prepared for individual sections. (ACR)

Savannah River Plant Works Technical Department monthly progress report for May 1958: Deleted Version

Energy Technology Data Exchange (ETDEWEB)

1958-06-17

This progress report by the Atomic Energy Division of the Savannah River Plant covers: Reactor Technology; Separation Technology; Engineering Assistance; Health Physics; and General Laboratory Work. (JT)

E-Division activities report

International Nuclear Information System (INIS)

Barschall, H.H.

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

Biology Division progress report, October 1, 1978-May 31, 1980. [Lead abstract

Energy Technology Data Exchange (ETDEWEB)

1980-10-01

Separate abstracts were prepared for each of the four sections into which this progress report has been divided. The report also contains sections related to interdivision activities and educational activities. (ERB)

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…

A novel model of magnetorheological damper with hysteresis division

Science.gov (United States)

Yu, Jianqiang; Dong, Xiaomin; Zhang, Zonglun

2017-10-01

Due to the complex nonlinearity of magnetorheological (MR) behavior, the modeling of MR dampers is a challenge. A simple and effective model of MR damper remains a work in progress. A novel model of MR damper is proposed with force-velocity hysteresis division method in this study. A typical hysteresis loop of MR damper can be simply divided into two novel curves with the division idea. One is the backbone curve and the other is the branch curve. The exponential-family functions which capturing the characteristics of the two curves can simplify the model and improve the identification efficiency. To illustrate and validate the novel phenomenological model with hysteresis division idea, a dual-end MR damper is designed and tested. Based on the experimental data, the characteristics of the novel curves are investigated. To simplify the parameters identification and obtain the reversibility, the maximum force part, the non-dimensional backbone part and the non-dimensional branch part are derived from the two curves. The maximum force part and the non-dimensional part are in multiplication type add-rule. The maximum force part is dependent on the current and maximum velocity. The non-dominated sorting genetic algorithm II (NSGA II) based on the design of experiments (DOE) is employed to identify the parameters of the normalized shape functions. Comparative analysis is conducted based on the identification results. The analysis shows that the novel model with few identification parameters has higher accuracy and better predictive ability.

Physics division annual report 1999