Science.gov

Sample records for largest nuclear institute

  1. Presidential Pay Is Increasing Fastest at the Largest Institutions

    ERIC Educational Resources Information Center

    Chronicle of Higher Education, 2007

    2007-01-01

    At the top echelon of higher education, boards have to pay to play when hiring a president. "The Chronicle"'s latest survey of executive compensation shows what might be described as the minimum pay now required at the top institutions. At public research universities, the minimum compensation among the big players is roughly $450,000. In the…

  2. Social Institutions and Nuclear Energy

    ERIC Educational Resources Information Center

    Weinberg, Alvin M.

    1972-01-01

    Nuclear technologists can offer an all but infinite source of relatively cheap and clean energy" but society must decide whether the price of eternal vigilance needed to ensure proper and safe operation of its nuclear energy system" is worth the benefits. (Author/AL)

  3. Institutional plan -- Institute of Nuclear Power Operations, 1993

    SciTech Connect

    Not Available

    1993-12-31

    The US nuclear electric utility industry established the Institute of Nuclear Power Operations (INPO) in 1979 to promote the highest levels of safety and reliability -- to promote excellence -- in the operation of its nuclear plants. After its formation, the Institute grew from a handful of on-loan personnel in late 1979 to an established work force of more than 400 permanent and on-loan personnel. INPO`s early years were marked by growth and evolution of its programs and organization. The Institute now focuses primarily on the effectiveness and enhancement of established programs and activities. For INPO to carry out its role, it must have the support of its members and participants and a cooperative but independent relationship with the NRC. A basis for that support and cooperation is an understanding of INPO`s role. This Institutional Plan is intended to provide that understanding by defining the Institute`s role and its major programs. This plan considers the existing and projected needs of the industry and the overall environment in which INPO and its members and participants operate.

  4. Successful Completion of the Largest Shipment of Russian Research Reactor High-Enriched Uranium Spent Nuclear Fuel from Czech Republic to Russian Federation

    SciTech Connect

    Michael Tyacke; Dr. Igor Bolshinsky; Jeff Chamberlin

    2008-07-01

    On December 8, 2007, the largest shipment of high-enriched uranium spent nuclear fuel was successfully made from a Russian-designed nuclear research reactor in the Czech Republic to the Russian Federation. This accomplishment is the culmination of years of planning, negotiations, and hard work. The United States, Russian Federation, and the International Atomic Energy Agency have been working together on the Russian Research Reactor Fuel Return (RRRFR) Program in support of the Global Threat Reduction Initiative. In February 2003, RRRFR Program representatives met with the Nuclear Research Institute in Rež, Czech Republic, and discussed the return of their high-enriched uranium spent nuclear fuel to the Russian Federation for reprocessing. Nearly 5 years later, the shipment was made. This paper discusses the planning, preparations, coordination, and cooperation required to make this important international shipment.

  5. Evolution of nuclear spectroscopy at Saha Institute of Nuclear Physics

    NASA Astrophysics Data System (ADS)

    Mukherjee, P.

    2001-07-01

    Experimental studies of nuclear excitations have been an important subject from the earliest days when the institute was established. The construction of 4 MeV proton cyclotron was mainly aimed to achieve this goal. Early experiments in nuclear spectroscopy were done with radioactive nuclei with the help of beta and gamma ray spectrometers. Small NaI(Tl) detectors were used for gamma--gamma coincidence, angular correlation and life time measurements. The excited states nuclear magnetic moments were measured in perturbed gamma--gamma angular correlation experiments. A high transmission magnetic beta ray spectrometer was used to measure internal conversion coefficients and beta--gamma coincidence studies. A large number of significant contributions were made during 1950--59 using these facilities. Proton beam in the cyclotron was made available in the late 1950's and together with 14 MeV neutrons obtained from a C-W generator a large number of short-lived nuclei were investigated during 1960's and 1970's. The introduction of high resolution Ge gamma detectors and the improved electronics helped to extend the spectroscopic work which include on-line (p,p'g) and (p,n g) reaction studies. Nuclear spectroscopic studies entered a new phase in the 1980's with the availability of 40--80 MeV alpha beam from the variable energy cyclotron at VECC, Calcutta. A number of experimental groups were formed in the institute to study nuclear level schemes with (a,xn g) reactions. Initially only two unsuppressed Ge detectors were used for coincidence studies. Later in 1989 five Ge detectors with a large six segmented NaI(Tl) multiplicity-sum detector system were successfully used to select various channels in (a ,xn g) reactions. From 1990 to date a variety of medium energy heavy ions were made available from the BARC-TIFR Pelletron and the Nuclear Science Centre Pelletron. The state of the art gamma detector arrays in these centres enabled the Saha Institute groups to undertake more

  6. Largest College Endowments, 2011

    ERIC Educational Resources Information Center

    Chronicle of Higher Education, 2012

    2012-01-01

    Of all endowments valued at more than $250-million, the UCLA Foundation had the highest rate of growth over the previous year, at 49 percent. This article presents a table of the largest college endowments in 2011. The table covers the "rank," "institution," "market value as of June 30, 2011," and "1-year change" of institutions participating in…

  7. p150Glued, the largest subunit of the dynactin complex, is nonessential in Neurospora but required for nuclear distribution.

    PubMed Central

    Tinsley, J H; Minke, P F; Bruno, K S; Plamann, M

    1996-01-01

    Dynactin is a multisubunit complex that is required for cytoplasmic dynein, a minus-end-directed, microtubule-associated motor, to efficiently transport vesicles along microtubules in vitro. p150Glued, the largest subunit of dynactin, has been identified in vertebrates and Drosophila and recently has been shown to interact with cytoplasmic dynein intermediate chains in vitro. The mechanism by which dynactin facilitates cytoplasmic dynein-dependent vesicle transport is unknown. We have devised a genetic screen for cytoplasmic dynein/dynactin mutants in the filamentous fungus Neurospora crassa. In this paper, we report that one of these mutants, ro-3, defines a gene encoding an apparent homologue of p150Glued, and we provide genetic evidence that cytoplasmic dynein and dynactin interact in vivo. The major structural features of vertebrate and Drosophila p150Glued, a microtubule-binding site at the N-terminus and two large alpha-helical coiled-coil regions contained within the distal two-thirds of the polypeptide, are conserved in Ro3. Drosophila p150Glued is essential for viability; however, ro-3 null mutants are viable, indicating that dynactin is not an essential complex in N. crassa. We show that N. crassa cytoplasmic dynein and dynactin mutants have abnormal nuclear distribution but retain the ability to organize cytoplasmic microtubules and actin in anucleate hyphae. Images PMID:8744947

  8. Nuclear Concepts & Technological Issues Institute: Teacher Activity Booklet.

    ERIC Educational Resources Information Center

    Davison, Candace C., Ed.; Lunetta, Lois W., Ed.

    For many summers the Radiation Science and Engineering Center at Pennsylvania State University has been the site of a Nuclear Concepts and Technological Issues Institute for secondary school science teachers. As a culminating activity of the institute teachers develop lesson plans, laboratory experiments, demonstrations, or other activities and…

  9. The nuclear matrix protein p255 is a highly phosphorylated form of RNA polymerase II largest subunit which associates with spliceosomes.

    PubMed Central

    Vincent, M; Lauriault, P; Dubois, M F; Lavoie, S; Bensaude, O; Chabot, B

    1996-01-01

    The monoclonal antibody CC-3 recognizes a phosphodependent epitope on a 255 kDa nuclear matrix protein (p255) recently shown to associate with splicing complexes as part of the [U4/U6.U5] tri-snRNP particle [Chabot et al. (1995) Nucleic Acids Res. 23, 3206-3213]. In mouse and Drosophila cultured cells the electrophoretic mobility of p255, faster in the latter species, was identical to that of the hyperphosphorylated form of RNA polymerase II largest subunit (IIo). The CC-3 immunoreactivity of p255 was abolished by 5,6-dichloro-1-beta-D-ribofuranosylbenzimidazole, which is known to cause the dephosphorylation of the C-terminal domain of subunit IIo by inhibiting the TFIIH-associated kinase. The identity of p255 was confirmed by showing that CC-3-immunoprecipitated p255 was recognized by POL3/3 and 8WG16, two antibodies specific to RNA polymerase II largest subunit. Lastly, the recovery of RNA polymerase II largest subunit from HeLa splicing mixtures was compromised by EDTA, which prevents the interaction of p255 with splicing complexes and inhibits splicing. Our results indicate that p255 represents a highly phosphorylated form of RNA polymerase II largest subunit physically associated with spliceosomes and possibly involved in coupling transcription to RNA processing. PMID:8972849

  10. Institutional Strain and Precarious Values in Meeting Future Nuclear Challenges

    SciTech Connect

    Bruce Matthews; Todd R. LaPorte

    1998-11-01

    This paper explores the implications of moderately expanding plutonium "pit" production capability within the strongly R&D culture of Los Alamos National Laboratory, especially in terms of the lab's current capacity or "fitness for the future" in which institutional stewardship of the nation's nuclear deterrent capability becomes a primary objective. The institutional properties needed to assure "future fitness" includes the organizational requisites highly reliable operations and sustained institutional constancy in a manner that evokes deep public trust and confidence. Estimates are made of the degree to which the key Division and most relevant Program office in this evolution already exhibits them.

  11. Institute of Nuclear Power Operations 1994 annual report

    SciTech Connect

    1994-12-31

    This annual report highlights the activities of the Institute of Nuclear Power Operations. The topics of the report include the president and chairmen`s joint message, overview of programs serving as the foundation for most of its activities, performance indicators for the US nuclear utility industry, and INPO`s 1994 financial reports and rosters. INPO has four technical cornerstone programs that serve as the foundation for most of its activities. (1) Evaluations of nuclear power plants operated by member utilities are conducted on a regularly scheduled basis. (2) INPO supports its member utilities in their work to achieve and maintain accreditation of training programs. (3) Events analysis programs identify and communicate lessons learned from plant events so utilities can take action to prevent similar events at their plants. (4) INPO helps members improve in nuclear operations areas through assistance programs and other activities that continually evolve to meet the changing needs of the nuclear industry

  12. Institute of Nuclear Power Operations annual report, 1993

    SciTech Connect

    1993-12-31

    This annual report highlights the activities of the Institute of Nuclear Power Operations. The topics of the report include the president and chairmen`s joint message, overview of programs serving as the foundation for most of its activities, performance indicators for the US nuclear utility industry, and INPO`s 1993 financial reports and rosters. INPO has four technical cornerstone programs that serve as the foundation for most of its activities. (1) Evaluations of nuclear power plants operated by member utilities are conducted on a regularly scheduled basis. (2) INPO supports its member utilities in their work to achieve and maintain accreditation of training programs. (3) Events analysis programs identify and communicate lessons learned from plant events so utilities can take action to prevent similar events at their plants. (4) INPO helps members improve in nuclear operations areas through assistance programs and other activities that continually evolve to meet the changing needs of the nuclear industry.

  13. Future projection of radiocesium flux to the ocean from the largest river impacted by Fukushima Daiichi Nuclear Power Plant.

    PubMed

    Adhiraga Pratama, Mochamad; Yoneda, Minoru; Shimada, Yoko; Matsui, Yasuto; Yamashiki, Yosuke

    2015-01-01

    Following the initial fall out from Fukushima Dai-ichi Nuclear Power Plant (FDNPP), a significant amount of radiocesium has been discharged from Abukuma River into the Pacific Ocean. This study attempted to numerically simulate the flux of radiocesium into Abukuma River by developing the multiple compartment model which incorporate the transport process of the radionuclide from the ground surface of the catchment area into the river, a process called wash off. The results from the model show that the sub-basins with a high percentage of forest area release the radionuclides at lower rate compared to the other sub-basins. In addition the results show that the model could predict the seasonal pattern of the observed data. Despite the overestimation observed between the modeled data and the observed data, the values of R(2) obtained from (137)Cs and (134)Cs of 0.98 and 0.97 respectively demonstrate the accuracy of the model. Prediction of the discharge from the basin area for 100 years after the accident shows that, the flux of radiocesium into the Pacific Ocean is still relatively high with an order of magnitude of 10(9) bq.month(-1) while the total accumulation of the discharge is 111 TBq for (137)Cs and 44 TBq for (134)Cs. PMID:25673214

  14. Future projection of radiocesium flux to the ocean from the largest river impacted by Fukushima Daiichi Nuclear Power Plant

    PubMed Central

    Adhiraga Pratama, Mochamad; Yoneda, Minoru; Shimada, Yoko; Matsui, Yasuto; Yamashiki, Yosuke

    2015-01-01

    Following the initial fall out from Fukushima Dai-ichi Nuclear Power Plant (FDNPP), a significant amount of radiocesium has been discharged from Abukuma River into the Pacific Ocean. This study attempted to numerically simulate the flux of radiocesium into Abukuma River by developing the multiple compartment model which incorporate the transport process of the radionuclide from the ground surface of the catchment area into the river, a process called wash off. The results from the model show that the sub-basins with a high percentage of forest area release the radionuclides at lower rate compared to the other sub-basins. In addition the results show that the model could predict the seasonal pattern of the observed data. Despite the overestimation observed between the modeled data and the observed data, the values of R2 obtained from 137Cs and 134Cs of 0.98 and 0.97 respectively demonstrate the accuracy of the model. Prediction of the discharge from the basin area for 100 years after the accident shows that, the flux of radiocesium into the Pacific Ocean is still relatively high with an order of magnitude of 109 bq.month−1 while the total accumulation of the discharge is 111 TBq for 137Cs and 44 TBq for 134Cs. PMID:25673214

  15. Future projection of radiocesium flux to the ocean from the largest river impacted by Fukushima Daiichi Nuclear Power Plant

    NASA Astrophysics Data System (ADS)

    Adhiraga Pratama, Mochamad; Yoneda, Minoru; Shimada, Yoko; Matsui, Yasuto; Yamashiki, Yosuke

    2015-02-01

    Following the initial fall out from Fukushima Dai-ichi Nuclear Power Plant (FDNPP), a significant amount of radiocesium has been discharged from Abukuma River into the Pacific Ocean. This study attempted to numerically simulate the flux of radiocesium into Abukuma River by developing the multiple compartment model which incorporate the transport process of the radionuclide from the ground surface of the catchment area into the river, a process called wash off. The results from the model show that the sub-basins with a high percentage of forest area release the radionuclides at lower rate compared to the other sub-basins. In addition the results show that the model could predict the seasonal pattern of the observed data. Despite the overestimation observed between the modeled data and the observed data, the values of R2 obtained from 137Cs and 134Cs of 0.98 and 0.97 respectively demonstrate the accuracy of the model. Prediction of the discharge from the basin area for 100 years after the accident shows that, the flux of radiocesium into the Pacific Ocean is still relatively high with an order of magnitude of 109 bq.month-1 while the total accumulation of the discharge is 111 TBq for 137Cs and 44 TBq for 134Cs.

  16. Assessing the Institution of the Nuclear Nonproliferation Regime

    SciTech Connect

    Toomey, Christopher

    2010-05-14

    The nuclear nonproliferation regime is facing a crisis of effectiveness. During the Cold War, the regime was relatively effective in stemming the proliferation of nuclear weapons and building an institutional structure that could, under certain conditions, ensure continued success. However, in the evolving global context, the traditional approaches are becoming less appropriate. Globalization has introduced new sets of stresses on the nonproliferation regime, such as the rise of non-state actors, broadening extensity and intensity of supply chains, and the multipolarization of power. This evolving global context demands an analytical and political flexibility in order to meet future threats. Current institutional capabilities established during the Cold War are now insufficient to meet the nonproliferation regime’s current and future needs. The research was based on information gathered through interviews and reviews of the relevant literature, and two dominant themes emerged. First, that human security should be integrated into the regime to account for the rise of non-state actors and networked violence. Second, confidence in the regime’s overall effectiveness has eroded at a time where verification-based confidence is becoming more essential. The research postulates that a critical analysis of the regime that fully utilizes institutional theory, with its focus on rules, normative structures, and procedures will be essential to adapting the regime to the current global context, building mechanisms for generating trust, creating better enforcement, and providing flexibility for the future.

  17. Determination of the melon chloroplast and mitochondrial genome sequences reveals that the largest reported mitochondrial genome in plants contains a significant amount of DNA having a nuclear origin

    PubMed Central

    2011-01-01

    Background The melon belongs to the Cucurbitaceae family, whose economic importance among vegetable crops is second only to Solanaceae. The melon has a small genome size (454 Mb), which makes it suitable for molecular and genetic studies. Despite similar nuclear and chloroplast genome sizes, cucurbits show great variation when their mitochondrial genomes are compared. The melon possesses the largest plant mitochondrial genome, as much as eight times larger than that of other cucurbits. Results The nucleotide sequences of the melon chloroplast and mitochondrial genomes were determined. The chloroplast genome (156,017 bp) included 132 genes, with 98 single-copy genes dispersed between the small (SSC) and large (LSC) single-copy regions and 17 duplicated genes in the inverted repeat regions (IRa and IRb). A comparison of the cucumber and melon chloroplast genomes showed differences in only approximately 5% of nucleotides, mainly due to short indels and SNPs. Additionally, 2.74 Mb of mitochondrial sequence, accounting for 95% of the estimated mitochondrial genome size, were assembled into five scaffolds and four additional unscaffolded contigs. An 84% of the mitochondrial genome is contained in a single scaffold. The gene-coding region accounted for 1.7% (45,926 bp) of the total sequence, including 51 protein-coding genes, 4 conserved ORFs, 3 rRNA genes and 24 tRNA genes. Despite the differences observed in the mitochondrial genome sizes of cucurbit species, Citrullus lanatus (379 kb), Cucurbita pepo (983 kb) and Cucumis melo (2,740 kb) share 120 kb of sequence, including the predicted protein-coding regions. Nevertheless, melon contained a high number of repetitive sequences and a high content of DNA of nuclear origin, which represented 42% and 47% of the total sequence, respectively. Conclusions Whereas the size and gene organisation of chloroplast genomes are similar among the cucurbit species, mitochondrial genomes show a wide variety of sizes, with a non

  18. Cyclotron laboratory of the Institute for Nuclear Research and Nuclear Energy

    NASA Astrophysics Data System (ADS)

    Tonev, D.; Goutev, N.; Georgiev, L. S.

    2016-06-01

    An accelerator laboratory is presently under construction in Sofia at the Institute for Nuclear Research and Nuclear Energy, Bulgarian Academy of Sciences. The laboratory will use a TR24 type of cyclotron, which provides a possibility to accelerate a proton beam with an energy of 15 to 24 MeV and current of up to 0.4 mA. An accelerator with such parameters allows to produce a large variety of radioisotopes for development of radiopharmaceuticals. The most common radioisotopes that could be produced with such a cyclotron are PET isotopes like: 11C, 13N, 15O, 18F, 124I, 64Cu, 68Ge/68Ga, and SPECT isotopes like: 123I, 111In, 67Ga, 57Co, 99m Tc. Our aim is to use the cyclotron facility for research in the fields of radiopharmacy, radiochemistry, radiobiology, nuclear physics, solid state physics, applied research, new materials and for education in all these fields including nuclear energy. The building of the laboratory will be constructed nearby the Institute for Nuclear Research and Nuclear Energy and the cyclotron together with all the equipment needed will be installed there.

  19. 76 FR 28192 - Petition for Rulemaking Submitted by the Nuclear Energy Institute

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-05-16

    ... COMMISSION 10 CFR Part 26 Petition for Rulemaking Submitted by the Nuclear Energy Institute AGENCY: Nuclear... rulemaking (PRM) submitted by Anthony R. Pietrangelo, on behalf of the Nuclear Energy Institute (NEI), the...-mail: timothy.reed@nrc.gov . SUPPLEMENTARY INFORMATION: On October 22, 2010, (75 FR 65249), the...

  20. The Gulf Nuclear Energy Infrastructure Institute : an integrated approach to safety, security and safeguards.

    SciTech Connect

    Beeley, Phillip A.; Boyle, David R.; Williams, Adam David; Mohagheghi, Amir Hossein

    2010-04-01

    Sandia National Laboratories (SNL) and the Nuclear Security Science and Policy Institute (NSSPI) at Texas A&M University are working with Middle East regional partners to set up a nuclear energy safety, safeguards, and security educational institute in the Gulf region. SNL and NSSPI, partnered with the Khalifa University of Science, Technology, and Research (KUSTAR), with suppot from its key nuclear stakeholders, the Emirates Nuclear Energy Corporation (ENEC), and the Federal Authority for Nuclear Regulation (FANR), plan to jointly establish the institute in Abu Dhabi. The Gulf Nuclear Energy Infrastructure Institute (GNEII) will be a KUSTAR-associated, credit-granting regional education program providing both classroom instruction and hands-on experience. The ultimate objective is for GNEII to be autonomous - regionally funded and staffed with personnel capable of teaching all GNEII courses five years after its inauguration. This is a strategic effort to indigenize a responsible nuclear energy culture - a culture shaped by an integrated understanding of nuclear safety, safeguards and security - in regional nuclear energy programs. GNEII also promotes international interests in developing a nuclear energy security and safety culture, increases collaboration between the nuclear energy security and safety communities, and helps to enhance global standards for nuclear energy technology in the Middle East.

  1. The Gulf Nuclear Energy Infrastructure Institute : an integrated approach to safety, security & safeguards.

    SciTech Connect

    Williams, Adam David

    2010-04-01

    Sandia National Laboratories (SNL) and the Nuclear Security Science and Policy Institute (NSSPI) at Texas A&M University are working with Middle East regional partners to set up a nuclear energy safety, safeguards, and security educational institute in the Gulf region. SNL and NSSPI, partnered with the Khalifa University of Science, Technology, and Research (KUSTAR), with suppot from its key nuclear stakeholders, the Emirates Nuclear Energy Corporation (ENEC), and the Federal Authority for Nuclear Regulation (FANR), plan to jointly establish the institute in Abu Dhabi. The Gulf Nuclear Energy Infrastructure Institute (GNEII) will be a KUSTAR-associated, credit-granting regional education program providing both classroom instruction and hands-on experience. The ultimate objective is for GNEII to be autonomous - regionally funded and staffed with personnel capable of teaching all GNEII courses five years after its inauguration. This is a strategic effort to indigenize a responsible nuclear energy culture - a culture shaped by an integrated understanding of nuclear safety, safeguards and security - in regional nuclear energy programs. GNEII also promotes international interests in developing a nuclear energy security and safety culture, increases collaboration between the nuclear energy security and safety communities, and helps to enhance global standards for nuclear energy technology in the Middle East.

  2. Institute for Nuclear Theory. Annual report No. 3, 1 March 1992--28 February 1993

    SciTech Connect

    Haxton, W.; Bertsch, G.; Henley, E.M.

    1993-07-01

    This report briefly discussion the following programs of the Institute for Nuclear Theory: fundamental interactions in nuclei; strangeness in hadrons and nuclei; microscopic nuclear structure theory; nuclear physics in atoms and molecules; phenomenology and lattice QCD; and large amplitude collective motion.

  3. Institute for Nuclear Theory annual report No. 4, 1 March 1993--28 February 1994

    SciTech Connect

    Haxton, W.; Bertsch, G.; Henley, E.M.

    1994-06-01

    The Institute for Nuclear Theory was created as a national center by the Department of Energy. It began operations March 1, 1990. This annual report summarizes the INT`s activities during its fourth year of operations.

  4. Saga is largest commercial submarine ever

    SciTech Connect

    Not Available

    1985-05-01

    The long-range autonomous submarine, Saga, went nuclear last year with an agreement between the French and two Canadian companies. The agreement to convert the prototype from Swedish Stirling closed-cycle combustion engines to a nuclear power supply will make Saga the first non-defense nuclear submarine. With an external hull displacement of 500 tons, Saga will be the largest commercial submarine ever built.

  5. 75 FR 10444 - Nuclear Energy Institute; Denial of Petition for Rulemaking

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-03-08

    ...The Nuclear Regulatory Commission (NRC) is denying a petition for rulemaking (PRM) submitted by the Nuclear Energy Institute (NEI) (the petitioner). The petitioner requested that the NRC amend the compliance date for specific requirements in the NRC's regulations. The NRC decided to deny PRM-73-14 for the reasons stated in this...

  6. 75 FR 63725 - Nuclear Energy Institute; Consideration of Petition in the Rulemaking Process

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-10-18

    ...The U.S. Nuclear Regulatory Commission (NRC) will consider five of the issues raised in a petition submitted by the Nuclear Energy Institute (NEI), and is denying the remaining four issues of the petition. The petition requests the NRC amend its regulations to clarify existing event reporting requirements based on experience gained since the requirements were...

  7. The Summer Nuclear Engineering Institute at The University of Texas at Austin

    NASA Astrophysics Data System (ADS)

    Olvera, Juan

    2009-10-01

    The Summer Nuclear Engineering Institute (SNEI) at the University of Texas is a four week course that provides an opportunity for undergraduates to experience the field of nuclear engineering. This experience is especially important if you are a sophomore or junior and are not majoring in nuclear engineering as an undergrad, but would like to explore what nuclear engineering is like. Students will study fundamental nuclear engineering concepts, gain hands-on experience at UT's research reactor and receive six transferrable college credits. The SNEI program was first held in July of 2009, and will be held once again in the summer of 2010; it is funded by the U.S. Nuclear Regulatory Commission Nuclear Education Grant Program which covers housing, meal plan, a travel and textbook allowance and a 1000 stipend.

  8. Institutional Radiation Safety Committee--Nuclear Regulatory Commission. Final rule.

    PubMed

    1982-09-13

    The Nuclear Regulatory Commission (NRC) is amending its regulations regarding hospitals licensed to use radioactive byproduct material for human applications. Currently, such a license requires that the hospital have a Medical Isotopes Committee to review clinical aspects of the use of radioactive materials within the hospital. The amendment requires instead a Radiation Safety Committee with a simplified membership that will focus on the radiation safety of workers and the general public. The rule change acknowledges the Food and Drug Administration's role in regulating the safety and effectiveness of radioactive drugs with respect to the patient. The membership of the new Radiation Safety Committee will include the hospital management and the nursing staff in decisions affecting radiation safety at the hospital and will be easier for smaller hospitals to recruit. PMID:10259789

  9. Remediation of old environmental liabilities in the Nuclear Research Institute Rez plc

    SciTech Connect

    Podlaha, J.

    2007-07-01

    The Nuclear Research Institute Rez plc (NRI) is a leading institution in all areas of nuclear R and D in the Czech Republic. The NRI's activity encompasses nuclear physics, chemistry, nuclear power, experiments at research nuclear reactors and many other topics. The NRI operates two research nuclear reactors, many facilities as a hot cell facility, research laboratories, technology for radioactive waste (RAW) management, radionuclide irradiators, an electron accelerator, etc. After 50 years of activities in the nuclear field, there are some environmental liabilities that shall be remedied in the NRI. There are three areas of remediation: (1) decommissioning of old obsolete facilities (e.g. decay tanks, RAW treatment technology, special sewage system), (2) treatment of RAW from operation and dismantling of nuclear facilities, and (3) elimination of spent fuel from research nuclear reactors operated by the NRI. The goal is to remedy the environmental liabilities and eliminate the potential negative impact on the environment. Based on this postulate, optimal remedial actions have been selected and recommended for the environmental remediation. Remediation of the environmental liabilities started in 2003 and will be finished in 2012. Some liabilities have already been successfully remedied. The most significant items of environmental liabilities are described in the paper together with information about the history, the current state, the progress, and the future activities in the field of remediation of environmental liabilities in the NRI. (authors)

  10. TLD environmental monitoring at the Institute of Nuclear Engineering in Brazil.

    PubMed

    Taam, I H; da Rosa, L A R; Crispim, V R

    2008-09-01

    Since 2003 the Institute of Nuclear Engineering in Rio de Janeiro city, Brazil, operates a new cyclotron, RDS-111, to produce (18)F-Fluorodeoxyglucose to be used in nuclear medicine. Additionally, the IEN radioactive waste repository has been enlarged during the past last years, receiving a considerable amount of radioactive materials. Therefore, it became necessary to evaluate a possible increase of the environmental gamma exposure rates at the institute site due to the operation of the new accelerator and the enlargement of the institute waste repository as well. LiF:Mg,Cu,P, TLD-100H, and TL detectors were employed for environmental kerma rate evaluation and the results were compared with previous results obtained before the RDS-111 operation initialisation and the enlargement of IEN waste repository. No significant contribution for the enhancement of environmental gamma kerma rates was detected. PMID:18348907

  11. US assistance in physical protection at the Kharkov Institute of Physics and Technology and the Sevastopol Institute of Nuclear Energy and Industry, Ukraine

    SciTech Connect

    Zinneman, T.; Miranda, J.; Novick, A.; Roche, C.; Kuzmyez, G.

    1997-09-01

    The U.S. DOE is providing nuclear material safeguards assistance in both material control & accountability and physical protection to several nuclear facilities in Ukraine. This paper describes the types of physical protection upgrades that are presently being implemented at the Kharkov Institute of Physics and Technology and at the Sevastopol Institute of Nuclear Energy and Industry. These upgrades include: hardening of storage areas, improvements in access control, intrusion detection, CCTV assessment, alarm monitoring and voice communication systems. Methods used to implement these upgrades and problems encountered are discussed. 4 refs., 2 figs.

  12. The Australian Institute of Nuclear Science & Engineering - a model for University-National Laboratory collaboration

    SciTech Connect

    Gammon, R.B.

    1994-12-31

    This paper describes the aims and activities of the Australian Institute of Nuclear Science and Engineering (AINSE), from its foundation in 1958 through to 1993. The philosophy, structure and funding of the Institute are briefly reviewed, followed by an account of the development of national research facilities at the Lucas Heights Research Laboratories, with particular emphasis on nuclear techniques of analysis using neutron scattering instruments and particle accelerators. AINSE`s program of Grants, Fellowships and Studentships are explained with many examples given of projects having significance in the context of Australia`s national goals. Conference and training programs are also included. The achievements during these years demonstrate that AINSE has been an efficient and cost- effective model for collaboration between universities and a major national laboratory. In recent years, industry, government organisations and the tertiary education system have undergone major re-structuring and rationalization. A new operational structure for AINSE has evolved in response to these changes and is described.

  13. Management of Spent Nuclear Fuel of Nuclear Research Reactor VVR-S at the National Institute of Physics and Nuclear Engineering, Bucharest, Romania

    NASA Astrophysics Data System (ADS)

    Biro, Lucian

    2009-05-01

    The Nuclear Research Reactor VVR-S (RR-VVR-S) located in Magurele-Bucharest, Romania, was designed for research and radioisotope production. It was commissioned in 1957 and operated without any event or accident for forty years until shut down in 1997. In 2002, by government decree, it was permanently shutdown for decommissioning. The National Institute of Physics and Nuclear Engineering (IFIN-HH) is responsible for decommissioning the RR-VVR-S, the first nuclear decommissioning project in Romania. In this context, IFIN-HH prepared and obtained approval from the Romanian Nuclear Regulatory Body for the Decommissioning Plan. One of the most important aspects for decommissioning the RR-VVR-S is solving the issue of the fresh and spent nuclear fuel (SNF) stored on site in wet storage pools. In the framework of the Russian Research Reactor Fuel Return Program (RRRFR), managed by the U.S. Department of Energy and in cooperation with the International Atomic Energy Agency and the Rosatom State Corporation, Romania repatriated all fresh HEU fuel to the Russian Federation in 2003 and the HEU SNF will be repatriated to Russia in 2009. With the experience and lessons learned from this action and with the financial support of the Romanian Government it will be possible for Romania to also repatriate the LEU SNF to the Russian Federation before starting the dismantling and decontamination of the nuclear facility. [4pt] In collaboration with K. Allen, Idaho National Laboratory, USA; L. Biro, National Commission for Nuclear Activities Control, Romania; and M. Dragusin, National Institute of Physics and Nuclear Engineering, Bucharest-Magurele, Romania.

  14. Institutional implications of establishing safety goals for nuclear power plants. [PWR; BWR

    SciTech Connect

    Morris, F.A.; Hooper, R.L.

    1983-07-01

    The purpose of this project is to anticipate and address institutional problems that may arise from the adoption of NRC's proposed Policy Statement on Safety Goals for Nuclear Power Plants. The report emphasizes one particular category of institutional problems: the possible use of safety goals as a basis for legal challenges to NRC actions, and the resolution of such challenges by the courts. Three types of legal issues are identified and analyzed. These are, first, general legal issues such as access to the legal system, burden of proof, and standard of proof. Second is the particular formulation of goals. Involved here are such questions as sustainable rationale, definitions, avoided issues, vagueness of time and space details, and degree of conservatism. Implementation brings up the third set of issues which include interpretation and application, linkage to probabilistic risk assessment, consequences as compared to events, and the use of results.

  15. Acceleration mass spectrometer of the Budker Institute of Nuclear Physics for biomedical applications

    NASA Astrophysics Data System (ADS)

    Rastigeev, S. A.; Frolov, A. R.; Goncharov, A. D.; Klyuev, V. F.; Konstantinov, E. S.; Kutnyakova, L. A.; Parkhomchuk, V. V.; Petrozhitskii, A. V.

    2014-09-01

    An accelerator mass spectrometer (AMS) made at the Budker Institute of Nuclear Physics (BINP), Siberian Branch, Russian Academy of Sciences, is installed in the Geochronology of the Cenozoic Era Center for Collective Use for the carbon 14 dating of samples. Distinctive features of the BINP AMS include the use of a middle energy separator of ion beams, magnesium vapor target as a stripping target, and a time-of-flight telescope with thin films for accurate ion selection. Results of experiments measuring the radiocarbon concentration in test samples with radiocarbon labels for biomedical applications are presented.

  16. Vacuum photodiode detectors for broadband vacuum ultraviolet detection in the Saha Institute of Nuclear Physics Tokamak

    NASA Astrophysics Data System (ADS)

    Rao, C. V. S.; Shankara Joisa, Y.; Hansalia, C. J.; Hui, Amit K.; Paul, Ratan; Ranjan, Prabhat

    1997-02-01

    We report on the application of the vacuum photodiode to detect vacuum ultraviolet (VUV) radiation emitted from the Saha Institute of Nuclear Physics (SINP) Tokamak. It is simple to fabricate and provides broadband spectral response in the VUV and ultrasoft x ray (10 eV-1 keV). In our design, a stainless steel photocathode is used, which has a response identical to tungsten in the wavelength range 100-1200 Å. Its surface is passivated, to minimize contamination and monolayer deposition, by electropolishing it. Some representative experimental results illustrating the range of applicability are presented with special emphasis on its performance in disruptive shots.

  17. Maintenance self-assessments - An INPO (Institute of Nuclear Power Operation) perspective

    SciTech Connect

    Subalusky, W.T.

    1990-06-01

    In March 1987, all nuclear utilities in the US were requested by the Institute of Nuclear Power Operations (INPO) to perform a self-assessment of their maintenance programs. The goal of these self-assessments was to have each station identify any existing problem areas in maintenance in clear and sufficient detail to determine the root causes of the problems and to provide a foundation for subsequent corrective actions. The self-assessments were to be performed by each nuclear station using the INPO document Guidelines for the Conduct of Maintenance at Nuclear Power Stations. By December 1987, 72 of 74 stations had completed the self-assessments, and by the middle of 1988, all stations had completed this systematic review of their maintenance programs. As part of an industry plan to ensure continued improvements in maintenance, INPO is following up on the effectiveness of these self-assessments during the course of plant evaluation visits. This presentation briefly reviews the approaches to self-assessment of the station's maintenance programs, some of the lessons learned from this effort, and the results, to date, of INPO follow-up efforts in this area.

  18. Test Facilities and Experience on Space Nuclear System Developments at the Kurchatov Institute

    SciTech Connect

    Ponomarev-Stepnoi, Nikolai N.; Garin, Vladimir P.; Glushkov, Evgeny S.; Kompaniets, George V.; Kukharkin, Nikolai E.; Madeev, Vicktor G.; Papin, Vladimir K.; Polyakov, Dmitry N.; Stepennov, Boris S.; Tchuniyaev, Yevgeny I.; Tikhonov, Lev Ya.; Uksusov, Yevgeny I.

    2004-02-04

    The complexity of space fission systems and rigidity of requirement on minimization of weight and dimension characteristics along with the wish to decrease expenditures on their development demand implementation of experimental works which results shall be used in designing, safety substantiation, and licensing procedures. Experimental facilities are intended to solve the following tasks: obtainment of benchmark data for computer code validations, substantiation of design solutions when computational efforts are too expensive, quality control in a production process, and 'iron' substantiation of criticality safety design solutions for licensing and public relations. The NARCISS and ISKRA critical facilities and unique ORM facility on shielding investigations at the operating OR nuclear research reactor were created in the Kurchatov Institute to solve the mentioned tasks. The range of activities performed at these facilities within the implementation of the previous Russian nuclear power system programs is briefly described in the paper. This experience shall be analyzed in terms of methodological approach to development of future space nuclear systems (this analysis is beyond this paper). Because of the availability of these facilities for experiments, the brief description of their critical assemblies and characteristics is given in this paper.

  19. Test Facilities and Experience on Space Nuclear System Developments at the Kurchatov Institute

    NASA Astrophysics Data System (ADS)

    Ponomarev-Stepnoi, Nikolai N.; Garin, Vladimir P.; Glushkov, Evgeny S.; Kompaniets, George V.; Kukharkin, Nikolai E.; Madeev, Vicktor G.; Papin, Vladimir K.; Polyakov, Dmitry N.; Stepennov, Boris S.; Tchuniyaev, Yevgeny I.; Tikhonov, Lev Ya.; Uksusov, Yevgeny I.

    2004-02-01

    The complexity of space fission systems and rigidity of requirement on minimization of weight and dimension characteristics along with the wish to decrease expenditures on their development demand implementation of experimental works which results shall be used in designing, safety substantiation, and licensing procedures. Experimental facilities are intended to solve the following tasks: obtainment of benchmark data for computer code validations, substantiation of design solutions when computational efforts are too expensive, quality control in a production process, and ``iron'' substantiation of criticality safety design solutions for licensing and public relations. The NARCISS and ISKRA critical facilities and unique ORM facility on shielding investigations at the operating OR nuclear research reactor were created in the Kurchatov Institute to solve the mentioned tasks. The range of activities performed at these facilities within the implementation of the previous Russian nuclear power system programs is briefly described in the paper. This experience shall be analyzed in terms of methodological approach to development of future space nuclear systems (this analysis is beyond this paper). Because of the availability of these facilities for experiments, the brief description of their critical assemblies and characteristics is given in this paper.

  20. Largest impact craters on Venus

    NASA Technical Reports Server (NTRS)

    Ivanov, B. A.; Weitz, C. M.; Basilevsky, A. T.

    1992-01-01

    High-resolution radar images from the Magellan spacecraft have allowed us to perform a detailed study on 25 large impact craters on Venus with diameters from 70 to 280 km. The dimension of these large craters is comparable with the characteristic thickness of the venusian lithosphere and the atmospheric scale height. Some physical parameters for the largest impact craters on Venus (LICV), such as depth, ring/diameter ratio, and range of ballistic ejecta deposits, have been obtained from the SAR images and the altimetry dataset produced by MIT. Data related to each of these parameters is discussed.

  1. Material Control and Accounting (MC&A) System Upgrades and Performance Testing at the Russian Federal Nuclear Center-All-Russian Scientific Research Institute of Experimental Physics (RFNC-VNIIEF) VNIIEF)

    SciTech Connect

    Bushmelev, Vadim; Viktorov, Vladimir; Zhikharev, Stanislav; Yuferev, Vladimir; Singh, Surinder Paul; Kuzminski, Jozef; Hogan, Kevin; McKisson, Jacquelin

    2008-01-01

    The All-Russian Scientific Research Institute of Experimental Physics (VNIIEF), founded in 1946 at the historic village of Sarov, in Nizhniy Novgorod Oblast, is the largest nuclear research center in the Rosatom complex. In the framework of international collaboration, the United States (US) Department of Energy/National Nuclear Security Agency, in cooperation with US national laboratories, on the one hand, Rosatom and VNIIEF on the other hand, have focused their cooperative efforts to upgrade the existing material protection control and accountability system to prevent unauthorized access to the nuclear material. In this paper we will discuss the present status of material control and accounting (MC&A) system upgrades and the preliminary results from a pilot program on the MC&A system performance testing that was recently conducted at one technical area.

  2. The AMS Measurements and Its Applications in Nuclear Physics at China Institute of Atomic Energy (CIAE)

    SciTech Connect

    Jiang Shan; Shen Hongtao; He Ming; Dong Kejun; He Guozhu; Wang Xianggao; Yuan Jian; Wang Wei; Wu Shaoyong; Ruan Xiangdong; Wu Weimin

    2010-05-12

    Accelerator Mass Spectrometry (AMS), initiated in late 1970s at McMaster university based on the accelerator and detector technique, has long been applied in the studies on archaeology, geology, and cosmology, as a powerful tool for isotope dating. The advantages of AMS in the analysis of rare nuclides by direct counting of the atoms, small sample size and relatively free from the interferences of molecular ions have been well documented. This paper emphasizes that AMS can not only be used for archaeology, geology, environment, biology and so on, but also served as a unique tool for nuclear physics research. In this paper, the determination of the half-lives of {sup 79}Se, the measurements of the cross-sections of {sup 93}Nb(n,2n){sup 92g}Nb and {sup 238}U(n,3n){sup 236}U reactions, the detection and determination of ultratrace impurities in neutrino detector materials, and the measurement of the fission product nuclide {sup 126}Sn, are to be introduced, as some of examples of AMS applications in nuclear research conducted in AMS lab of China Institute of Atomic Energy. Searching for superheavy nuclides by using AMS is being planned.

  3. 75 FR 65249 - Anthony R. Pietrangelo on Behalf of the Nuclear Energy Institute; Receipt of Petition for Rulemaking

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-10-22

    ...The Nuclear Regulatory Commission (NRC) is publishing for public comment a notice of receipt of a petition for rulemaking, dated September 3, 2010, which was filed with the NRC by Anthony R. Pietrangelo on behalf of the Nuclear Energy Institute (NEI). The petition was docketed by the NRC on September 13, 2010, and has been assigned Docket No. PRM-26-5. The petitioner requests that the NRC......

  4. Largest Solar Flare on Record

    NASA Technical Reports Server (NTRS)

    2001-01-01

    The largest solar flare ever recorded occurred at 4:51 p.m. EDT, on Monday, April 2, 2001. as Observed by the Solar and Heliospheric Observatory (SOHO) satellite. Solar flares, among the solar systems mightiest eruptions, are tremendous explosions in the atmosphere of the Sun capable of releasing as much energy as a billion megatons of TNT. Caused by the sudden release of magnetic energy, in just a few seconds, solar flares can accelerate solar particles to very high velocities, almost to the speed of light, and heat solar material to tens of millions of degrees. The recent explosion from the active region near the sun's northwest limb hurled a coronal mass ejection into space at a whopping speed of roughly 7.2 million kilometers per hour. Luckily, the flare was not aimed directly towards Earth. Second to the most severe R5 classification of radio blackout, this flare produced an R4 blackout as rated by the NOAA SEC. This classification measures the disruption in radio communications. Launched December 2, 1995 atop an ATLAS-IIAS expendable launch vehicle, the SOHO is a cooperative effort involving NASA and the European Space Agency (ESA). (Image courtesy NASA Goddard SOHO Project office)

  5. Nuclear Explosives in Peacetime, A Scientists' Institute for Public Information Workbook.

    ERIC Educational Resources Information Center

    Brodine, Virginia, Ed.; Bradford, Albert, Ed.

    Discussed are the commercial uses of nuclear explosives as well as the testing of nuclear weapons. Case histories of the use of nuclear explosives to stimulate oil and natural gas production are examined, and problems associated with nuclear blasting are discussed with special reference to canal construction. Effects of nuclear weapons testing are…

  6. A Program for Cultivating Nuclear Talent at Engineering Educational Institute in a Remote Area from Nuclear Power Plants

    NASA Astrophysics Data System (ADS)

    Takahashi, Tsuyoshi

    Recently, in Japan, the number of students who hope for finding employment at the nuclear power company has decreased as students‧ concern for the nuclear power industry decreases. To improve the situation, Ministry of Education, Culture, Sports, Science and Technology launched the program of cultivating talent for nuclear power which supports research and education of nuclear power in the academic year of 2007. Supported by the program, Kushiro College of Technology conducted several activities concerning nuclear power for about a year. The students came to be interested in nuclear engineering through these activities and its results.

  7. Rehabilitating China's largest inland river.

    PubMed

    Li, Yiqing; Chen, Yaning; Zhang, Yaoqi; Xia, Yang

    2009-06-01

    Wetlands are particularly important for conserving China's biodiversity but riparian wetlands in the Tarim River basin in western China have been reduced by 46% during the last 3 decades. The world's largest habitat for Populus euphratica, which is in the Tarim River basin, significantly shrank. To protect and restore the deteriorated ecosystems along the Tarim River and its associated wetlands, China's government initiated a multimillion dollar river restoration project to release water from upper dams to the dried-up lower reaches of the Tarim River starting in 2000. We monitored the responses of groundwater and vegetation to water recharge in the lower reaches of the river from 2000 to 2006 by establishing nine 1000-m-long transects perpendicular to the river at intervals of 20-45 km along the 320-km river course below the Daxihaizi Reservoir, the source of water conveyance, to Lake Taitema, the terminus of the Tarim River. Water recharges from the Daxihaizi Reservoir to the lower reaches of the Tarim River significantly increased groundwater levels and vegetation coverage at all monitoring sites along the river. The mean canopy size of the endangered plant species P. euphratica doubled after 6 years of water recharge. Some rare migrating birds returned to rest on the restored wetlands in summer along the lower reaches of the Tarim River. The biggest challenge facing decision makers, however, is to balance water allocation and water rights between agricultural and natural ecosystems in a sustainable way. A large number of inhabitants in the Tarim Basin depend on these limited water resources for a living. At the same time, the endangered ecosystems need to be protected. Given the ecological, socioeconomic, and sociopolitical realities in the Tarim Basin, adaptive water policies and strategies are needed for water allocation in these areas of limited water resources. PMID:22748091

  8. The tissue bank at the national nuclear research institute in Mexico.

    PubMed

    Esther Martínez-Pardo, María; Lourdes Reyes-Frías, Ma

    2003-01-01

    The Instituto Nacional de Investigaciones Nucleares (ININ, The National Nuclear Research Institute) received during 1997-1998 strong support of the International Atomic Energy Agency (IAEA), to establish the first and only one tissue bank (BTR ININ tissue bank) in Mexico that uses ionising radiation as sterilising agent. In that time, the BTR staff was trained in different tissue banks in several countries. Basic equipment for tissue processing donated by the IAEA was received in 1998. In July, 1999 the Mexican Health Secretariat gave the Sanitary License No. 1062000001 to the BTR to operate as an official organ and tissue bank. In August, 2001 the ININ and the Hospital Materno Infantil (HMI-ISSEMYM) signed an agreement to collaborate in amnion processing. The hospital is responsible for donor selection, serology tests, tissue procurement and washing, since this hospital is the BTR amnion supplier. The tissues are collected by ININ weekly with complete documentation. The BTR is responsible for processing: cleaning, air drying, packaging, labelling, microbiological control and sterilisation by gamma irradiation. The sterilised tissue is kept under quarantine for 6 months to obtain the results of the donor second serology test. From March to June, 2002 the BTR has processed 347.86 units (50 cm(2) each), is say, 17,393 cm(2). In addition, the pig skin xenograft process has been implemented and a protocol for clinical applications of it is running at the Hospital Central Sur de Alta Especialidad (PEMEX). Also the ININ tissue bank present status and perspectives are described. PMID:15256855

  9. Food irradiation studies at the Institute of Nuclear Energy Research, Taiwan, Rep. of China

    NASA Astrophysics Data System (ADS)

    Fu, Ying-Kai; Tsai, Chao-Ming; Wu, Wen-Shi; Chang, Ming-Shia; Chang, Yung-Nien; Shu, Shih-Lin

    The use of radiation to inhibit sprouting of potatoes, onions, gingers and garlic was studied at the Institute of Nuclear Energy Research. The sprout inhibition doses of potatoes, onions, gingers and garlic were found to be 10, 5, 2.5, 7.5 Krads, respectively. Changes in the content of moisture, ash, reducing sugars, total sugars, lipids, proteins, fiber etc. were monitored in various agricultural foodstuffs both with and without γ-irradiation at various doses. Fungicides did not prevent potatoes from decaying at 10 or 25°C with or without gamma radiation. Onions treated with any of fungicides has significantly more healthy tissues than controls at 10°C but not 25°C after 30 and 60 days storage, regardless of the presence or absence of gamma radiation. Insect pests have been causing great damage to stored rice in Taiwan. The four most harmful insects are: Sitophilus Zeamais Mostschulsky. Rhyzopertha dominica. Tribolitum custaneum Herbst and Sitotroga cerealella Oliver. Adults, eggs or larvae of these insect pests were irradiated by 60Co gamma rays. The results show that 40 Krads of gamma-irradiation could completely control these four species of pests in stored rice.

  10. The radioisotope complex project "RIC-80" at the Petersburg Nuclear Physics Institute

    NASA Astrophysics Data System (ADS)

    Panteleev, V. N.; Barzakh, A. E.; Batist, L. Kh.; Fedorov, D. V.; Ivanov, V. S.; Moroz, F. V.; Molkanov, P. L.; Orlov, S. Yu.; Volkov, Yu. M.

    2015-12-01

    The high current cyclotron C-80 capable of producing 40-80 MeV proton beams with a current of up to 200 μA has been constructed at Petersburg Nuclear Physics Institute. One of the main goals of the C-80 is the production of a wide spectrum of medical radionuclides for diagnostics and therapy. The project development of the radioisotope complex RIC-80 (radioisotopes at the cyclotron C-80) at the beam of C-80 has been completed. The RIC-80 complex is briefly discussed in this paper. The combination of the mass-separator with the target-ion source device, available at one of the new target stations for on-line or semi on-line production of a high purity separated radioisotopes, is explored in greater detail. The results of target and ion source tests for a mass-separator method for the production of high purity radioisotopes 82Sr and 223,224Ra are also presented.

  11. The radioisotope complex project “RIC-80” at the Petersburg Nuclear Physics Institute

    SciTech Connect

    Panteleev, V. N. Barzakh, A. E.; Batist, L. Kh.; Fedorov, D. V.; Ivanov, V. S.; Moroz, F. V.; Molkanov, P. L.; Orlov, S. Yu.; Volkov, Yu. M.

    2015-12-15

    The high current cyclotron C-80 capable of producing 40-80 MeV proton beams with a current of up to 200 μA has been constructed at Petersburg Nuclear Physics Institute. One of the main goals of the C-80 is the production of a wide spectrum of medical radionuclides for diagnostics and therapy. The project development of the radioisotope complex RIC-80 (radioisotopes at the cyclotron C-80) at the beam of C-80 has been completed. The RIC-80 complex is briefly discussed in this paper. The combination of the mass-separator with the target-ion source device, available at one of the new target stations for on-line or semi on-line production of a high purity separated radioisotopes, is explored in greater detail. The results of target and ion source tests for a mass-separator method for the production of high purity radioisotopes {sup 82}Sr and {sup 223,224}Ra are also presented.

  12. The MaPLE device of Saha Institute of Nuclear Physics: Construction and its plasma aspects

    SciTech Connect

    Pal, Rabindranath; Biswas, Subir; Basu, Subhasis; Chattopadhyay, Monobir; Basu, Debjyoti; Chaudhuri, Manis

    2010-07-15

    The Magnetized Plasma Linear Experimental (MaPLE) device is a low cost laboratory plasma device at Saha Institute of Nuclear Physics fabricated in-house with the primary aim of studying basic plasma physics phenomena such as plasma instabilities, wave propagation, and their nonlinear behavior in magnetized plasma regime in a controlled manner. The machine is specially designed to be a versatile laboratory device that can provide a number of magnetic and electric scenario to facilitate such studies. A total of 36 number of 20-turn magnet coils, designed such as to allow easy handling, is capable of producing a uniform, dc magnetic field of about 0.35 T inside the plasma chamber of diameter 0.30 m. Support structure of the coils is planned in an innovative way facilitating straightforward fabrication and easy positioning of the coils. Further special feature lies in the arrangement of the spacers between the coils that can be maneuvered rather easily to create different magnetic configurations. Various methods of plasma production can be suitably utilized according to the experimental needs at either end of the vacuum vessel. In the present paper, characteristics of a steady state plasma generated by electron cyclotron resonance method using 2.45 GHz microwave power are presented. Scans using simple probe drives revealed that a uniform and long plasma column having electron density {approx}3-5x10{sup 10} cm{sup -3} and temperature {approx}7-10 eV, is formed in the center of the plasma chamber which is suitable for wave launching experiments.

  13. Institute for Nuclear Theory annual report No. 2, 1 March 1991--29 February 1992

    SciTech Connect

    Haxton, W.; Henley, E. M.

    1992-01-01

    This report discusses research on the following topics in Nuclear physics: electromagnetic interactions and few-nucleon systems; N*'s and nucleon structure; mesons and fields in nuclei; and nuclear astrophysics of type II supernovae. (LSP).

  14. Implementation of the MPC and A Operations Monitoring (MOM) System at IRT-T FSRE Nuclear Power Institute (NPI)

    SciTech Connect

    Sitdikov,I.; Zenkov, A.; Tsibulnikov, Y.; Duncan, C.; Brownell, L.; Pratt, W.T.; Carbonaro, J.; White, R.M.; Coffing, J.A.

    2008-07-13

    The Material Protection, Control and Accounting (MPC&A) Program has been working since 1994 with nuclear sites in Russia to upgrade the physical protection (PP) and material control and accounting (MC&A) functions at facilities containing weapons usable nuclear material. In early 2001, the MPC&A program initiated the MPC&A Operations Monitoring (MOM) Project to monitor facilities where MPC&A upgrades have been installed to provide increased confidence that personnel are present and vigilant, provide confidence that security procedures are being properly performed and provide additional assurance that nuclear materials have not been stolen. The MOM project began as a pilot project at the Moscow State Engineering Physics Institute (MEPhI) and a MOM system was successfully installed in October 2001. Following the success of the MEPhI pilot project, the MPC&A Program expanded the installation of MOM systems to several other Russian facilities, including the Nuclear Physics Institute (NPI) in Tomsk. The MOM system was made operational at NPI in October 2004. This paper is focused on the experience gained from operation of this system and the objectives of the MOM system. The paper also describes how the MOM system is used at NPI and, in particular, how the data is analyzed. Finally, potential expansion of the MOM system at NPI is described.

  15. Blueprint of the world`s largest uranium markets

    SciTech Connect

    Bizal, M.R.

    1996-06-01

    This article is a review of two recently released reports: (1) the EURATOM Supply Agency Annual Report for 1995, and (2) the US Energy Information Administration Uranium Industry Annual for 1995. These reports provide myraid information on uranium production, deliveries, contracts, and prices, as well as enrichment market activity during 1995 in the world`s largest nuclear fuel markets: the European Union and the United States.

  16. Characteristics of potential repository wastes: Volume 4, Appendix 4A, Nuclear reactors at educational institutions of the United States; Appendix 4B, Data sheets for nuclear reactors at educational institutions; Appendix 4C, Supplemental data for Fort St. Vrain spent fuel; Appendix 4D, Supplemental data for Peach Bottom 1 spent fuel; Appendix 4E, Supplemental data for Fast Flux Test Facility

    SciTech Connect

    Not Available

    1992-07-01

    Volume 4 contains the following appendices: nuclear reactors at educational institutions in the United States; data sheets for nuclear reactors at educational institutions in the United States(operational reactors and shut-down reactors); supplemental data for Fort St. Vrain spent fuel; supplemental data for Peach Bottom 1 spent fuel; and supplemental data for Fast Flux Test Facility.

  17. Forty years of the Institute for Nuclear Research (Scientific session of the Physical Sciences Division of the Russian Academy of Sciences, 22 December 2010)

    NASA Astrophysics Data System (ADS)

    2011-09-01

    On 22 December 2010, the scientific session of the Physical Sciences Division of the Russian Academy of Sciences (RAS), devoted to the 40th anniversary of the Institute for Nuclear Research, RAS, was held at the Institute for Nuclear Research, RAS in Troitsk. The agenda of the session announced on the website www.gpad.ac.ru of the RAS Physical Sciences Division listed the following reports: (1) Matveev V A (Institute for Nuclear Research, RAS, Moscow) "Introductory word"; (2) Gavrin V N (Institute for Nuclear Research, RAS, Moscow) "Contribution of the SAGE results to the understanding of solar physics and neutrino physics"; (3) Domogatsky G V (Institute for Nuclear Research, RAS, Moscow) "Baikal neutrino experiment"; (4) Tkachev I I (Institute for Nuclear Research, RAS, Moscow) "Observation of the Greisen - Zatsepin - Kuz'min effect at the Telescope Array Observatory"; (5) Kudenko Yu G (Institute for Nuclear Research, RAS, Moscow) "Neutrino T2K experiment: the first results"; (6) Sadykov R A (Institute for Nuclear Research, RAS, Moscow) "Fields of study of condensed media at the neutron facility at the INR, RAS"; (7) Zhuikov B L (Institute for Nuclear Research, RAS, Moscow) "Production of isotopes at the INR, RAS: reality and prospects".The papers written on the base of reports 1-5 and 7 are published below. In addition, the paper "High-power diode-pumped alkali lasers" by A M Shalagin is published. The paper is based on the report presented at the scientific session of the General Assembly of the Physical Sciences Division, RAS (13 December 2010) devoted to the 50th anniversary of the laser, the main materials of the session having been published in Usp. Fiz. Nauk 181 (8) 867 (2011) [Phys. Usp. 54 837 (2011)]. • Institute for Nuclear Research of the Russian Academy of Sciences turns 40, V A Matveev Physics-Uspekhi, 2011, Volume 54, Number 9, Pages 939-940 • The Russian-American gallium experiment SAGE, V N Gavrin Physics-Uspekhi, 2011, Volume 54, Number 9

  18. Correlation between effective and ambient neutron doses in radiation fields of nuclear-physics facilities at the joint institute for nuclear research

    NASA Astrophysics Data System (ADS)

    Guseva, S. V.; Lesovaya, E. N.; Timoshenko, G. N.

    2015-01-01

    The questions of a correlation between normative and operational quantities in the dosimetry of ionizing radiation still attract the attention of professionals working in the field. Since the neutron fields of nuclear-physics facilities at the Joint Institute for Nuclear Research (JINR) are highly varied, the question of whether the ambient neutron dose always serves as a conservative estimate of the effective dose (in the terms of which the dose limits are set) is of practical importance for radiation monitoring at JINR. We studied the correlation between the calculated values of effective and ambient neutron doses obtained based on a representative set of neutron spectra measured at JINR with the use of a multisphere neutron spectrometer. It is demonstrated that measuring the ambient neutron dose may not serve as a confirmation of compliance with the set dose limits in "hard" neutron fields.

  19. An optical comb filter for the stochastic cooling system at the Nuclotron accelerator (Joint Institute for Nuclear Research, Russia)

    NASA Astrophysics Data System (ADS)

    Kadenko, I.; Bezshyyko, O.; Hohov, D.; Sidorin, A.; Trubnikov, G.; Shurkhno, N.; Stassen, R.

    2014-09-01

    To carry out longitudinal stochastic cooling of charge particle beams at the Nuclotron of the Joint Institute for Nuclear Research (Dubna), a unique optical comb filter was designed and developed. The designed filter has space-saving size, low insertion losses, and small dispersion. The comb filter tuning was automated using a specially designed software, which made it possible to reduce the tuning time and increase tuning accuracy up to several hertz. The designed filter with automatic tuning was successfully tested in an experiment on deuteron beam cooling. In this work, characteristics of the designed filter are presented and an algorithm of its automatic tuning is considered.

  20. On the radiation safety studies of space nuclear sources at the Scientific-Research Institute of Thermal Processes

    SciTech Connect

    Koroteev, A.S.; Gafarov, A.A.; Bakhtin, B.I.; Kosov, A.V. )

    1991-01-01

    The main directions and some results of the theoretical and experimental studies, carried out at the Scientific-Research Institute of Thermal Processes on the radiation safety (RS) problem of the space nuclear power sources (SNPS), are stated. The experimental base for SNPS aerodynamic heating and breakup research is described. Some results of studies on the development of RS system for SNPS of Cosmos-954''-type satellites and SNPS Topaz'' are represented. The main directions and results of research on the RS problem of radioisotope SNPS is showen. Some aspects of SNPS possible collisions with space debris in near-earth orbits is examined.

  1. 77 FR 9273 - WORKSHOP Sponsored by the Nuclear Regulatory Commission and the Electric Power Research Institute...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-02-16

    ... on the Treatment of Probabilistic Risk Assessment Uncertainties: Public Meeting AGENCY: U.S. Nuclear... (EPRI), will hold a joint workshop on the Treatment of Probabilistic Risk Assessment (PRA) Uncertainties..., ``Enhancing Public Participation in NRC Meetings,'' (67 FR 36920; May 28, 2002). The NRC provides...

  2. Nuclear Concepts and Energy Resources Institute: A Unique Approach to Public Education.

    ERIC Educational Resources Information Center

    Jester, W. A.; And Others

    1982-01-01

    Describes a four-week program to prepare Pennsylvania high school science teachers to teach a course in nuclear science. Includes program content and organization and the name/address of contact person for teachers interested in participating in the 1982 session. (SK)

  3. Teaching the Nuclear Age: A History Institute for Teachers. Footnotes. Volume 14, Number 5

    ERIC Educational Resources Information Center

    Kuehner, Trudy

    2009-01-01

    On March 28-29, 2009, FPRI's Wachman Center hosted 43 teachers from across the country for a weekend of discussion on teaching the nuclear age. In his opening remarks, Walter A. McDougall observed that although students today are not made to crawl under their desks in air raid drills, that atomic power remains, and it is still necessary to raise a…

  4. Results in Developing an Engineering Degree Program in Safeguards and Security of Nuclear Materials at Moscow Engineering Physics Institute

    SciTech Connect

    Kryuchkov, Eduard F.; Geraskin, Nikolay I.; Killinger, Mark H.; Goodey, Kent O.; Butler, Gilbert W.; Duncan, Cristen L.

    2007-07-01

    The world’s first master’s degree program in nuclear safeguards and security, established at Moscow Engineering Physics Institute (MEPhI), has now graduated nine classes of students. Most of the graduates have gone on to work at government agencies, research organizations, or obtain their PhD. In order to meet the demand for safeguards and security specialists at nuclear facilities, MEPhI established a 5½ year engineering degree program that provides more hands-on training desired by facilities. In February 2004, the first students began their studies in the new discipline Nuclear Material Safeguards and Nonproliferation. This class, as well as other subsequent classes, included students who started the program in their third year of studies, as the first 2½ years consists of general engineering curriculum. Fourteen students made up the first graduating class, receiving their engineering degrees in February 2007. The topics addressed in this paper include specific features of the program caused by peculiarities of Russian education legislation and government quality control of academic education. This paper summarizes the main joint actions undertaken by MEPhI and the US National Laboratories in conjunction with the U.S. Department of Energy, to develop the engineering degree program. Also discussed are the program’s specific training requirements, student internships, and job placement. The paper concludes with recommendations from a recent international seminar on nonproliferation education and training.

  5. Application of modern computer technology to EPRI (Electric Power Research Institute) nuclear computer programs: Final report

    SciTech Connect

    Feinauer, L.R.

    1989-08-01

    Many of the nuclear analysis programs in use today were designed and developed well over a decade ago. Within this time frame, tremendous changes in hardware and software technologies have made it necessary to revise and/or restructure most of the analysis programs to take advantage of these changes. As computer programs mature from the development phase to being production programs, program maintenance and portability become very important issues. The maintenance costs associated with a particular computer program can generally be expected to exceed the total development costs by as much as a factor of two. Many of the problems associated with high maintenance costs can be traced back to either poorly designed coding structure, or ''quick fix'' modifications which do not preserve the original coding structure. The lack of standardization between hardware designs presents an obstacle to the software designer in providing 100% portable coding; however, conformance to certain guidelines can ensure portability between a wide variety of machines and operating systems. This report presents guidelines for upgrading EPRI nuclear computer programs to conform to current programming standards while maintaining flexibility for accommodating future hardware and software design trends. Guidelines for development of new computer programs are also presented. 22 refs., 10 figs.

  6. Germany gets largest ever MRI scanner

    NASA Astrophysics Data System (ADS)

    Stafford, Ned

    2008-07-01

    A 57-tonne cylindrical magnet has arrived at the Jülich Research Centre in Germany, where physicists are putting together the world's largest magnetic resonance imaging (MRI) system. When the machine comes online next year, medical researchers will use it to examine the brain in unprecedented detail, in the hope of gaining new insights into neurodegenerative diseases such as Alzheimer's.

  7. Air pollution ranks as largest health risk

    NASA Astrophysics Data System (ADS)

    Wendel, JoAnna

    2014-04-01

    The World Health Organization (WHO) reports that 7 million people died in 2012 from air-pollution-related sicknesses, marking air pollution as the single largest environmental health risk. This finding, a result of better knowledge and assessment of the diseases, is more than double previous estimates of the risk of death from air pollution.

  8. Program for upgrading nuclear materials protection, control, and accounting at all facilities within the All-Russian Institute of Experimental Physics (VNIIEF)

    SciTech Connect

    Yuferev, V.; Zhikharev, S.; Yakimov, Y.

    1998-12-31

    As part of the Department of Energy-Russian program for strengthening nuclear material protection, control, and accounting (MPC and A), plans have now been formulated to install an integrated MPC and A system at all facilities containing large quantities of weapons-usable nuclear material within the All-Russian Institute of Experimental Physics (VNIIEF, Arzamas-16) complex. In addition to storage facilities, the complex houses a number of critical facilities used to conduct nuclear physics research and facilities for developing procedures for disassembly of nuclear weapons.

  9. Opportunities for Russian Nuclear Weapons Institute developing computer-aided design programs for pharmaceutical drug discovery. Final report

    SciTech Connect

    1996-09-23

    The goal of this study is to determine whether physicists at the Russian Nuclear Weapons Institute can profitably service the need for computer aided drug design (CADD) programs. The Russian physicists` primary competitive advantage is their ability to write particularly efficient code able to work with limited computing power; a history of working with very large, complex modeling systems; an extensive knowledge of physics and mathematics, and price competitiveness. Their primary competitive disadvantage is their lack of biology, and cultural and geographic issues. The first phase of the study focused on defining the competitive landscape, primarily through interviews with and literature searches on the key providers of CADD software. The second phase focused on users of CADD technology to determine deficiencies in the current product offerings, to understand what product they most desired, and to define the potential demand for such a product.

  10. Simultaneous measurements of plasma parameters in the Saha Institute of Nuclear Physics Tokamak using a new low cost optoisolator

    NASA Astrophysics Data System (ADS)

    Ghosh, J.; Chattopadhyay, P. K.; Pal, R.; Bal, B.; Bhattacharya, P. S.

    2000-09-01

    In the Saha Institute of Nuclear Physics Tokamak (SINP-TOKAMAK), simultaneous measurement of signals from some diagnostics, like, electrostatic probes, etc., is not possible because pickup noises due to the formation of ground and other loops affect them quite severely. To avoid these loops and also to isolate some diagnostics from the ground, we developed a new type of optical isolator using a very low cost optical isolator chip (MC2TE made by Motorola) in a novel configuration. We continuously kept the light emitting diode on and used a feedback arrangement at the receiving side of the photoemitted signal for achieving good isolation for very low signals with reasonably high frequency response and good linearity. The method is highly cost effective in low budget tokamak experiments.

  11. First Light for World's Largest 'Thermometer Camera'

    NASA Astrophysics Data System (ADS)

    2007-08-01

    LABOCA in Service at APEX The world's largest bolometer camera for submillimetre astronomy is now in service at the 12-m APEX telescope, located on the 5100m high Chajnantor plateau in the Chilean Andes. LABOCA was specifically designed for the study of extremely cold astronomical objects and, with its large field of view and very high sensitivity, will open new vistas in our knowledge of how stars form and how the first galaxies emerged from the Big Bang. ESO PR Photo 35a/07 ESO PR Photo 35a/07 LABOCA on APEX "A large fraction of all the gas in the Universe has extremely cold temperatures of around minus 250 degrees Celsius, a mere 20 degrees above absolute zero," says Karl Menten, director at the Max Planck Institute for Radioastronomy (MPIfR) in Bonn, Germany, that built LABOCA. "Studying these cold clouds requires looking at the light they radiate in the submillimetre range, with very sophisticated detectors." Astronomers use bolometers for this task, which are, in essence, thermometers. They detect incoming radiation by registering the resulting rise in temperature. More specifically, a bolometer detector consists of an extremely thin foil that absorbs the incoming light. Any change of the radiation's intensity results in a slight change in temperature of the foil, which can then be registered by sensitive electronic thermometers. To be able to measure such minute temperature fluctuations requires the bolometers to be cooled down to less than 0.3 degrees above absolute zero, that is below minus 272.85 degrees Celsius. "Cooling to such low temperatures requires using liquid helium, which is no simple feat for an observatory located at 5100m altitude," says Carlos De Breuck, the APEX instrument scientist at ESO. Nor is it simple to measure the weak temperature radiation of astronomical objects. Millimetre and submillimetre radiation opens a window into the enigmatic cold Universe, but the signals from space are heavily absorbed by water vapour in the Earth

  12. A heartrending burden of gynaecological cancers in advance stage at nuclear institute of medicine and radiotherapy Jamshoro Sindh

    PubMed Central

    Bibi, Seema; Ashfaque, Sanober; Laghari, Naeem Ahmed

    2016-01-01

    Objectives: In Pakistan gynaecological cancers are among the leading causes of women’s morbidity and mortality posing huge financial burden on families, communities and state. Due to lack of national cancer registry exact facts and figures are unknown therefore this study was planned to find out prevalence, age, site and stage of presentation of gynaecological cancers at Nuclear Institute of Medicine and Radiotherapy (NIMRA), Jamshoro. Methods: A retrospective, cross sectional study was conducted from 1st January 2011 to 31st December 2011 at NIMRA Jamshoro. All cases of genital tract cancers were evaluated, required data was entered on predesigned performa and results were analyzed manually. Results: Out of 2401 total registered cancer cases, 231 (9.6%) patients were suffering from gynaecological cancer making it third most common cancer. Ovary was commonest site followed by cervix and uterus. More than 60% cases presented in advanced stage, mostly during 4th and 5th decade of life. Conclusion: Gynecological cancer was among top three cancers at one of the busiest public sector cancer institute in Sindh province and significant number presented in advance stage making treatment difficult and expensive. There is urgent need for development and implementation of an effective health policy regarding cancer prevention and treatment. PMID:27022358

  13. Flight performance of the largest volant bird

    PubMed Central

    Ksepka, Daniel T.

    2014-01-01

    Pelagornithidae is an extinct clade of birds characterized by bizarre tooth-like bony projections of the jaws. Here, the flight capabilities of pelagornithids are explored based on data from a species with the largest reported wingspan among birds. Pelagornis sandersi sp. nov. is represented by a skull and substantial postcranial material. Conservative wingspan estimates (∼6.4 m) exceed theoretical maximums based on extant soaring birds. Modeled flight properties indicate that lift:drag ratios and glide ratios for P. sandersi were near the upper limit observed in extant birds and suggest that pelagornithids were highly efficient gliders, exploiting a long-range soaring ecology. PMID:25002475

  14. Fiji's largest marine reserve benefits reef sharks

    NASA Astrophysics Data System (ADS)

    Goetze, J. S.; Fullwood, L. A. F.

    2013-03-01

    To provide more information about whether sharks benefit from no-take marine reserves, we quantified the relative abundance and biomass of reef sharks inside and outside of Namena, Fiji's largest reserve (60.6 km2). Using stereo baited remote underwater video systems (stereo-BRUVs), we found that the abundance and biomass of sharks was approximately two and four times greater in shallow and deep locations, respectively, within the Namena reserve compared to adjacent fished areas. The greater abundance and biomass of reef sharks inside Namena is likely a result of greater prey availability rather than protection from fishing. This study demonstrates that marine reserves can benefit sharks.

  15. DEVELOPMENT, INSTALLATION AND OPERATION OF THE MPC&A OPERATIONS MONITORING (MOM) SYSTEM AT THE JOINT INSTITUTE FOR NUCLEAR RESEARCH (JINR) DUBNA, RUSSIA

    SciTech Connect

    Kartashov,V.V.; Pratt,W.; Romanov, Y.A.; Samoilov, V.N.; Shestakov, B.A.; Duncan, C.; Brownell, L.; Carbonaro, J.; White, R.M.; Coffing, J.A.

    2009-07-12

    The Material Protection, Control and Accounting (MPC&A) Operations Monitoring (MOM) systems handling at the International Intergovernmental Organization - Joint Institute for Nuclear Research (JINR) is described in this paper. Category I nuclear material (plutonium and uranium) is used in JINR research reactors, facilities and for scientific and research activities. A monitoring system (MOM) was installed at JINR in April 2003. The system design was based on a vulnerability analysis, which took into account the specifics of the Institute. The design and installation of the MOM system was a collaborative effort between JINR, Brookhaven National Laboratory (BNL) and the U.S. Department of Energy (DOE). Financial support was provided by DOE through BNL. The installed MOM system provides facility management with additional assurance that operations involving nuclear material (NM) are correctly followed by the facility personnel. The MOM system also provides additional confidence that the MPC&A systems continue to perform effectively.

  16. Project of a Super Charm-Tau factory at the Budker Institute of Nuclear Physics in Novosibirsk

    SciTech Connect

    Bondar, A. E.

    2013-09-15

    A project of a Super Charm-Tau factory is being developed at the Budker Institute of Nuclear Physics (Siberian Branch, Russian Academy of Sciences) in Novosibirsk. The electron-positron collider to be employed will operate at c.m. energies in the range between 2 and 5 GeV at an unprecedentedly high luminosity of 10{sup 35} cm{sup -2} s{sup -1} with a longitudinal electron polarization at the beam-interaction point. The main objective of experiments at the Super Charm-Tau factory is to study processes involving the production and properties of charmed quarks and tau leptons. A high luminosity of this setup will make it possible to obtain a statistical data sample that will be three to four orders of magnitude vaster than that from any other experiment performed thus far. Experiments at this setup are assumed to be sensitive to effects of new physics beyond the Standard Model. Investigations to be carried out at the Super-Charm-Tau factory will supplement future experiments at Super-B factories under construction in Italy and in Japan.

  17. Collapse of the world's largest herbivores.

    PubMed

    Ripple, William J; Newsome, Thomas M; Wolf, Christopher; Dirzo, Rodolfo; Everatt, Kristoffer T; Galetti, Mauro; Hayward, Matt W; Kerley, Graham I H; Levi, Taal; Lindsey, Peter A; Macdonald, David W; Malhi, Yadvinder; Painter, Luke E; Sandom, Christopher J; Terborgh, John; Van Valkenburgh, Blaire

    2015-05-01

    Large wild herbivores are crucial to ecosystems and human societies. We highlight the 74 largest terrestrial herbivore species on Earth (body mass ≥100 kg), the threats they face, their important and often overlooked ecosystem effects, and the conservation efforts needed to save them and their predators from extinction. Large herbivores are generally facing dramatic population declines and range contractions, such that ~60% are threatened with extinction. Nearly all threatened species are in developing countries, where major threats include hunting, land-use change, and resource depression by livestock. Loss of large herbivores can have cascading effects on other species including large carnivores, scavengers, mesoherbivores, small mammals, and ecological processes involving vegetation, hydrology, nutrient cycling, and fire regimes. The rate of large herbivore decline suggests that ever-larger swaths of the world will soon lack many of the vital ecological services these animals provide, resulting in enormous ecological and social costs. PMID:26601172

  18. Testing a Parachute for Mars in World's Largest Wind Tunnel

    NASA Technical Reports Server (NTRS)

    2007-01-01

    The team developing the landing system for NASA's Mars Science Laboratory tested the deployment of an early parachute design in mid-October 2007 inside the world's largest wind tunnel, at NASA Ames Research Center, Moffett Field, California.

    In this image, two engineers are dwarfed by the parachute, which holds more air than a 280-square-meter (3,000-square-foot) house and is designed to survive loads in excess of 36,000 kilograms (80,000 pounds).

    The parachute, built by Pioneer Aerospace, South Windsor, Connecticut, has 80 suspension lines, measures more than 50 meters (165 feet) in length, and opens to a diameter of nearly 17 meters (55 feet). It is the largest disk-gap-band parachute ever built and is shown here inflated in the test section with only about 3.8 meters (12.5 feet) of clearance to both the floor and ceiling.

    The wind tunnel, which is 24 meters (80 feet) tall and 37 meters (120 feet) wide and big enough to house a Boeing 737, is part of the National Full-Scale Aerodynamics Complex, operated by the U.S. Air Force, Arnold Engineering Development Center.

    NASA's Jet Propulsion Laboratory, Pasadena, California, is building and testing the Mars Science Laboratory spacecraft for launch in 2009. The mission will land a roving analytical laboratory on the surface of Mars in 2010. JPL is a division of the California Institute of Technology.

  19. The largest volcanic eruptions on Earth

    NASA Astrophysics Data System (ADS)

    Bryan, Scott E.; Peate, Ingrid Ukstins; Peate, David W.; Self, Stephen; Jerram, Dougal A.; Mawby, Michael R.; Marsh, J. S. (Goonie); Miller, Jodie A.

    2010-10-01

    Large igneous provinces (LIPs) are sites of the most frequently recurring, largest volume basaltic and silicic eruptions in Earth history. These large-volume (> 1000 km 3 dense rock equivalent) and large-magnitude (> M8) eruptions produce areally extensive (10 4-10 5 km 2) basaltic lava flow fields and silicic ignimbrites that are the main building blocks of LIPs. Available information on the largest eruptive units are primarily from the Columbia River and Deccan provinces for the dimensions of flood basalt eruptions, and the Paraná-Etendeka and Afro-Arabian provinces for the silicic ignimbrite eruptions. In addition, three large-volume (675-2000 km 3) silicic lava flows have also been mapped out in the Proterozoic Gawler Range province (Australia), an interpreted LIP remnant. Magma volumes of > 1000 km 3 have also been emplaced as high-level basaltic and rhyolitic sills in LIPs. The data sets indicate comparable eruption magnitudes between the basaltic and silicic eruptions, but due to considerable volumes residing as co-ignimbrite ash deposits, the current volume constraints for the silicic ignimbrite eruptions may be considerably underestimated. Magma composition thus appears to be no barrier to the volume of magma emitted during an individual eruption. Despite this general similarity in magnitude, flood basaltic and silicic eruptions are very different in terms of eruption style, duration, intensity, vent configuration, and emplacement style. Flood basaltic eruptions are dominantly effusive and Hawaiian-Strombolian in style, with magma discharge rates of ~ 10 6-10 8 kg s -1 and eruption durations estimated at years to tens of years that emplace dominantly compound pahoehoe lava flow fields. Effusive and fissural eruptions have also emplaced some large-volume silicic lavas, but discharge rates are unknown, and may be up to an order of magnitude greater than those of flood basalt lava eruptions for emplacement to be on realistic time scales (< 10 years). Most

  20. The largest volcanic eruptions on Earth

    NASA Astrophysics Data System (ADS)

    Bryan, Scott E.; Peate, Ingrid Ukstins; Peate, David W.; Self, Stephen; Jerram, Dougal A.; Mawby, Michael R.; Marsh, J. S. (Goonie); Miller, Jodie A.

    2010-10-01

    Large igneous provinces (LIPs) are sites of the most frequently recurring, largest volume basaltic and silicic eruptions in Earth history. These large-volume (> 1000 km 3 dense rock equivalent) and large-magnitude (> M8) eruptions produce areally extensive (10 4-10 5 km 2) basaltic lava flow fields and silicic ignimbrites that are the main building blocks of LIPs. Available information on the largest eruptive units are primarily from the Columbia River and Deccan provinces for the dimensions of flood basalt eruptions, and the Paraná-Etendeka and Afro-Arabian provinces for the silicic ignimbrite eruptions. In addition, three large-volume (675-2000 km 3) silicic lava flows have also been mapped out in the Proterozoic Gawler Range province (Australia), an interpreted LIP remnant. Magma volumes of > 1000 km 3 have also been emplaced as high-level basaltic and rhyolitic sills in LIPs. The data sets indicate comparable eruption magnitudes between the basaltic and silicic eruptions, but due to considerable volumes residing as co-ignimbrite ash deposits, the current volume constraints for the silicic ignimbrite eruptions may be considerably underestimated. Magma composition thus appears to be no barrier to the volume of magma emitted during an individual eruption. Despite this general similarity in magnitude, flood basaltic and silicic eruptions are very different in terms of eruption style, duration, intensity, vent configuration, and emplacement style. Flood basaltic eruptions are dominantly effusive and Hawaiian-Strombolian in style, with magma discharge rates of ~ 10 6-10 8 kg s -1 and eruption durations estimated at years to tens of years that emplace dominantly compound pahoehoe lava flow fields. Effusive and fissural eruptions have also emplaced some large-volume silicic lavas, but discharge rates are unknown, and may be up to an order of magnitude greater than those of flood basalt lava eruptions for emplacement to be on realistic time scales (< 10 years). Most

  1. Computer networks for financial activity management, control and statistics of databases of economic administration at the Joint Institute for Nuclear Research

    NASA Astrophysics Data System (ADS)

    Tyupikova, T. V.; Samoilov, V. N.

    2003-04-01

    Modern information technologies urge natural sciences to further development. But it comes together with evaluation of infrastructures, to spotlight favorable conditions for the development of science and financial base in order to prove and protect legally new research. Any scientific development entails accounting and legal protection. In the report, we consider a new direction in software, organization and control of common databases on the example of the electronic document handling, which functions in some departments of the Joint Institute for Nuclear Research.

  2. Institute of Electrical and Electronics Engineers, Nuclear Science Symposium, 18th, and Nuclear Power Systems Symposium, 3rd, San Francisco, Calif., November 3-5, 1971, Proceedings.

    NASA Technical Reports Server (NTRS)

    1972-01-01

    Potential advantages of fusion power reactors are discussed together with the protection of the public from radioactivity produced in nuclear power reactors, and the significance of tritium releases to the environment. Other subjects considered are biomedical instrumentation, radiation damage problems, low level environmental radionuclide analysis systems, nuclear techniques in environmental research, nuclear instrumentation, and space and plasma instrumentation. Individual items are abstracted in this issue.

  3. Largest-ever Ozone Hole over Antarctica

    NASA Technical Reports Server (NTRS)

    2002-01-01

    A NASA instrument has detected an Antarctic ozone 'hole' (what scientists call an 'ozone depletion area') that is three times larger than the entire land mass of the United States-the largest such area ever observed. The 'hole' expanded to a record size of approximately 11 million square miles (28.3 million square kilometers) on Sept. 3, 2000. The previous record was approximately 10.5 million square miles (27.2 million square km) on Sept. 19, 1998. The ozone hole's size currently has stabilized, but the low levels in its interior continue to fall. The lowest readings in the ozone hole are typically observed in late September or early October each year. 'These observations reinforce concerns about the frailty of Earth's ozone layer. Although production of ozone-destroying gases has been curtailed under international agreements, concentrations of the gases in the stratosphere are only now reaching their peak. Due to their long persistence in the atmosphere, it will be many decades before the ozone hole is no longer an annual occurrence,' said Dr. Michael J. Kurylo, manager of the Upper Atmosphere Research Program, NASA Headquarters, Washington, DC. Ozone molecules, made up of three atoms of oxygen, comprise a thin layer of the atmosphere that absorbs harmful ultraviolet radiation from the Sun. Most atmospheric ozone is found between approximately six miles (9.5 km) and 18 miles (29 km) above the Earth's surface. Scientists continuing to investigate this enormous hole are somewhat surprised by its size. The reasons behind the dimensions involve both early-spring conditions, and an extremely intense Antarctic vortex. The Antarctic vortex is an upper-altitude stratospheric air current that sweeps around the Antarctic continent, confining the Antarctic ozone hole. 'Variations in the size of the ozone hole and of ozone depletion accompanying it from one year to the next are not unexpected,' said Dr. Jack Kaye, Office of Earth Sciences Research Director, NASA Headquarters

  4. Conceptual design project: Accelerator complex for nuclear physics studies and boron neutron capture therapy application at the Yerevan Physics Institute (YerPhI) Yerevan, Armenia

    NASA Astrophysics Data System (ADS)

    Avagyan, R. H.; Kerobyan, I. A.

    2015-07-01

    The final goal of the proposed project is the creation of a Complex of Accelerator Facilities at the Yerevan Physics Institute (CAF YerPhI) for nuclear physics basic researches, as well as for applied programs including boron neutron capture therapy (BNCT). The CAF will include the following facilities: Cyclotron C70, heavy material (uranium) target/ion source, mass-separator, LINAC1 (0.15-1.5 MeV/u) and LINAC2 (1.5-10 MeV/u). The delivered by C70 proton beams with energy 70 MeV will be used for investigations in the field of basic nuclear physics and with energy 30 MeV for use in applications.

  5. An investigation into the accuracy of the albedo dosimeter DVGN-01 in measuring personnel irradiation doses in the fields of neutron radiation at nuclear power installations of the joint institute for nuclear research

    NASA Astrophysics Data System (ADS)

    Beskrovnaya, L. G.; Goroshkova, E. A.; Mokrov, Yu. V.

    2010-05-01

    The calculated results of research into the accuracy of an individual albedo dosimeter DVGN-01 as it corresponds to the personal equivalent dose for neutrons H p (10) and to the effective dose for neutrons E eff in the neutron fields at Joint Institute for Nuclear Research Nuclear Power Installations (JNPI) upon different geometries of irradiations are presented. It has been shown that correction coefficients are required for the specific estimation of doses by the dosimeter. These coefficients were calculated using the energy sensitivity curve of the dosimeter and the known neutron spectra at JNPI. By using the correction factors, the uncertainties of both doses will not exceed the limits given to the personnel according to the standards.

  6. Detail of the largest generator, an Enterprise 5000, also known ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    Detail of the largest generator, an Enterprise 5000, also known as "Big Bertha", looking southeast - March Air Force Base, Strategic Air Command, Utility Building, 5220 Riverside Drive, Moreno Valley, Riverside County, CA

  7. Comments on Presentation on Industrial Nuclear Explosion Sites in the Russian Federation: Recovery and Institutional Monitoring Problems

    SciTech Connect

    Bradley, Donald J.

    2009-01-01

    The U.S. National Academy of Sciences selected 6 U.S. scientists to review papers prepared by Russian specialists in 6 specific areas of radioactive waste management concern. As one of the U.S. specialists selected, Don Bradley attended a meeting in Moscow, Russia where the papers were formally presented. Following the presentation, eah one was critiqued by the U.S. specialist. In Mr. Bradley's case the topic was contamination at Peaceful Nuclear Explosion test sites (PNE's). The formal title of the meeting was: "Cleaning Up Sites Contaminated with Radioactive Materials". Following discussions with the U.S. team, each of the U.S. specialists was charged with writing up a short comment paper for the U.S. Academy of Sciences. This is Mr. Bradley's comments on the presentation by Kasatkin V.V., Kamnev Ye.N. and Ilyichev V.A. (Rosatom, FGUP VNIPIpromtechnologii) .

  8. Effect of the size of experimental channels of the lead slowing-down spectrometer SVZ-100 (Institute for Nuclear Research, Moscow) on the moderation constant

    NASA Astrophysics Data System (ADS)

    Latysheva, L. N.; Bergman, A. A.; Sobolevsky, N. M.; Ilić, R. D.

    2013-04-01

    Lead slowing-down (LSD) spectrometers have a low energy resolution (about 30%), but their luminosity is 103 to 104 times higher than that of time-of-flight (TOF) spectrometers. A high luminosity of LSD spectrometers makes it possible to use them to measure neutron cross section for samples of mass about several micrograms. These features specify a niche for the application of LSD spectrometers in measuring neutron cross sections for elements hardly available in macroscopic amounts—in particular, for actinides. A mathematical simulation of the parameters of SVZ-100 LSD spectrometer of the Institute for Nuclear Research (INR, Moscow) is performed in the present study on the basis of the MCNPX code. It is found that the moderation constant, which is the main parameter of LSD spectrometers, is highly sensitive to the size and shape of detecting volumes in calculations and, hence, to the real size of experimental channels of the LSD spectrometer.

  9. Effect of the size of experimental channels of the lead slowing-down spectrometer SVZ-100 (Institute for Nuclear Research, Moscow) on the moderation constant

    SciTech Connect

    Latysheva, L. N.; Bergman, A. A.; Sobolevsky, N. M.; Ilic, R. D.

    2013-04-15

    Lead slowing-down (LSD) spectrometers have a low energy resolution (about 30%), but their luminosity is 10{sup 3} to 10{sup 4} times higher than that of time-of-flight (TOF) spectrometers. A high luminosity of LSD spectrometers makes it possible to use them to measure neutron cross section for samples of mass about several micrograms. These features specify a niche for the application of LSD spectrometers in measuring neutron cross sections for elements hardly available in macroscopic amounts-in particular, for actinides. A mathematical simulation of the parameters of SVZ-100 LSD spectrometer of the Institute for Nuclear Research (INR, Moscow) is performed in the present study on the basis of the MCNPX code. It is found that the moderation constant, which is the main parameter of LSD spectrometers, is highly sensitive to the size and shape of detecting volumes in calculations and, hence, to the real size of experimental channels of the LSD spectrometer.

  10. Approximating the largest eigenvalue of network adjacency matrices

    NASA Astrophysics Data System (ADS)

    Restrepo, Juan G.; Ott, Edward; Hunt, Brian R.

    2007-11-01

    The largest eigenvalue of the adjacency matrix of a network plays an important role in several network processes (e.g., synchronization of oscillators, percolation on directed networks, and linear stability of equilibria of network coupled systems). In this paper we develop approximations to the largest eigenvalue of adjacency matrices and discuss the relationships between these approximations. Numerical experiments on simulated networks are used to test our results.

  11. Time scale of the largest imaginable magnetic storm

    NASA Astrophysics Data System (ADS)

    Vasyliūnas, V. M.

    2013-01-01

    The depression of the horizontal magnetic field at Earth's equator for the largest imaginable magnetic storm has been estimated (Vasyliūnas, 2011a) as -Dst ~ 2500 nT, from the assumption that the total pressure in the magnetosphere (plasma plus magnetic field perturbation) is limited, in order of magnitude, by the minimum pressure of Earth's dipole field at the location of each flux tube. The obvious related question is how long it would take the solar wind to supply the energy content of this largest storm. The maximum rate of energy input from the solar wind to the magnetosphere can be evaluated on the basis either of magnetotail stress balance or of polar cap potential saturation, giving an estimate of the time required to build up the largest storm, which (for solar-wind and magnetospheric parameter values typical of observed superstorms) is roughly between ~2 and ~6 h.

  12. Watching the Creation of Southern California's Largest Reservoir

    NASA Technical Reports Server (NTRS)

    2001-01-01

    The new Diamond Valley Lake Reservoir near the city of Hemet in Riverside County is billed as the largest earthworks construction project in U.S.history. Construction began in 1995 and involved 31 million cubic meters of foundation excavation and 84 million cubic meters of embankment construction. This set of MISR images captures the most recent phase in the reservoir's activation. At the upper left is a natural-color view acquired by the instrument's vertical-viewing (nadir) camera on March 14, 2000 (Terra orbit 1273), shortly after the Metropolitan Water District began filling the reservoir with water from the Colorado River and Northern California. Water appears darker than the surrounding land. The image at the upper right was acquired nearly one year later on March 1, 2001 (Terra orbit 6399), and shows a clear increase in the reservoir's water content. When full, the lake will hold nearly a trillion liters of water.

    According to the Metropolitan Water District, the 7 kilometer x 3 kilometer reservoir nearly doubles Southern California's above-groundwater storage capacity. In addition to routine water management, Diamond Valley Lake is designed to provide protection against drought and a six-month emergency supply in the event of earthquake damage to a major aqueduct. In the face of electrical power shortages, it is also expected to reduce dependence on the pumping of water from northern mountains during the high-demand summer months. An unexpected result of site excavation was the uncovering of mastodon and mammoth skeletons along with bones from extinct species not previously thought to have been indigenous to the area, such as the giant long-horned bison and North American lion. A museum and interpretive center is being built to protect these finds.

    The lower MISR image, from May 20, 2001 (Terra orbit 7564), is a false-color view combining data from the instrument's 26-degree forward view (displayed as blue) with data from the 26-degree backward

  13. Final Status Survey for the Largest Decommissioning Project on Earth

    SciTech Connect

    Dubiel, R.W.; Miller, J.; Quayle, D.

    2006-07-01

    To assist the United States Department of Energy's (US DOE's) re-industrialization efforts at its gaseous diffusion site in Oak Ridge, Tennessee, known as the East Tennessee Technology Park (ETTP), the US DOE awarded a 6-year Decontamination and Decommissioning (D and D) contract to BNG America (formerly BNFL Inc.) in 1997. The ETTP 3-Building D and D Project included the removal and disposition of the materials and equipment from the K-33, K-31, and K-29 Gaseous Diffusion Plant buildings. The three buildings comprise more than 4.8 million square feet (446,000 square meters) of floor surface area and more than 350 million pounds (148 million kilograms) of hazardous and radioactively contaminated material, making it the largest nuclear D and D project in progress anywhere in the world. The logistical hurdles involved in a project of this scope and magnitude required an extensive amount of Engineering and Health Physics professionals. In order to accomplish the Final Status Survey (FSS) for a project of this scope, the speed and efficiency of automated survey equipment was essential. Surveys of floors, structural steel and ceilings up to 60 feet (18 meters) were required. The FSS had to be expanded to include additional remediation and surveys due to characterization surveys and assumptions regarding the nature and extent of contamination provided by the US DOE. Survey design and technical bases had to consider highly variable constituents; including uranium from depleted to low enrichment, variable levels of Technetium-99 and transuranic nuclides, which were introduced into the cascade during the 1960's when recycled uranium (RU) from Savannah River was re-enriched at the facility. The RU was transported to unexpected locations from leaks in the cascade by complex building ventilation patterns. The primary survey tool used for the post remediation and FSS was the Surface Contamination Monitor (SCM) and the associated Survey Information Management System (SIMS

  14. Building Earth's Largest Library: Driving into the Future.

    ERIC Educational Resources Information Center

    Coffman, Steve

    1999-01-01

    Examines the Amazon.com online bookstore as a blueprint for designing the world's largest library. Topics include selection; accessibility and convenience; quality of Web sites and search tools; personalized service; library collection development, including interlibrary loan; library catalogs and catalog records; a circulation system; costs;…

  15. Cassini sheds light on Titan's second largest lake, Ligeia Mare

    NASA Astrophysics Data System (ADS)

    Wendel, JoAnna

    2014-04-01

    Saturn's largest moon, Titan, is known for its dense, planet-like atmosphere and large lakes most likely made of methane and ethane. It has been suggested that Titan's atmosphere and surface are a model of early Earth. Since the early 2000s, NASA's Cassini space probe has been unlocking secrets of the distant moon.

  16. Afterglows from the largest explosions in the universe

    PubMed Central

    Hartmann, Dieter H.

    1999-01-01

    The distinction of “largest explosions in the universe” has been bestowed on cosmic gamma-ray bursts. Their afterglows are brighter than supernovae and therefore are called hypernovae. Photometry and spectroscopy of these afterglows have provided major breakthroughs in our understanding of this mysterious phenomenon. PMID:10220364

  17. The Power of Nature. World's Largest Math Event 5.

    ERIC Educational Resources Information Center

    National Council of Teachers of Mathematics, Inc., Reston, VA.

    The theme of the fifth annual World's Largest Math Event (WLME 5) is "The Power of Nature." This theme encourages students to explore natural forces that affect humankind, including phenomena such as hurricanes, earthquakes, and snowstorms, and the mathematics that underlies their study. The 15 activities for WLMES have been grouped into five…

  18. The Single Largest Education Donor Comes with Controversy

    ERIC Educational Resources Information Center

    Finkel, Ed

    2012-01-01

    For the last decade, in districts big and small, the Bill & Melinda Gates Foundation has emerged as the largest private funder of educational efforts. This began with an initiative around small schools in the early to mid-2000s, mostly abandoned now, and has gained traction in the past few years in areas such as teacher evaluation, the Common Core…

  19. The Roper Center: The World's Largest Archive of Survey Data.

    ERIC Educational Resources Information Center

    Barry, John M.

    1988-01-01

    Describes the holdings and services provided by the Roper Center, the largest archive of survey data in the world. Explains the structure of and topics included in the online database, and discusses fees, membership opportunities, and future plans for the center. A sidebar by Burns W. Roper is included. (CLB)

  20. Animals as Our Companions: World's Largest Math Event 6.

    ERIC Educational Resources Information Center

    National Council of Teachers of Mathematics, Inc., Reston, VA.

    The World's Largest Math Event 6 (WLME 6) is the National Council of Teachers of Mathematics' (NCTM) celebration of mathematics and mathematics education and is the highlight of Mathematics Education Month. This year's event, slated for April 28, 2000, features the theme "Animals as Our Companions". This theme encourages students to explore the…

  1. Automation of the quantitative determination of elemental content in samples using neutron activation analysis on the IBR-2 reactor at the frank laboratory for neutron physics, joint institute for nuclear research

    NASA Astrophysics Data System (ADS)

    Dmitriev, A. Yu.; Pavlov, S. S.

    2013-01-01

    Software for the automated quantitative determination of element concentrations in samples is described. This software is used in neutron activation analysis (NAA) at the IBR-2 reactor of the Frank Laboratory for Neutron Physics, Joint Institute for Nuclear Research (FLNP JINR).

  2. Bayesian Predictive Distribution for the Magnitude of the Largest Aftershock

    NASA Astrophysics Data System (ADS)

    Shcherbakov, R.

    2014-12-01

    Aftershock sequences, which follow large earthquakes, last hundreds of days and are characterized by well defined frequency-magnitude and spatio-temporal distributions. The largest aftershocks in a sequence constitute significant hazard and can inflict additional damage to infrastructure. Therefore, the estimation of the magnitude of possible largest aftershocks in a sequence is of high importance. In this work, we propose a statistical model based on Bayesian analysis and extreme value statistics to describe the distribution of magnitudes of the largest aftershocks in a sequence. We derive an analytical expression for a Bayesian predictive distribution function for the magnitude of the largest expected aftershock and compute the corresponding confidence intervals. We assume that the occurrence of aftershocks can be modeled, to a good approximation, by a non-homogeneous Poisson process with a temporal event rate given by the modified Omori law. We also assume that the frequency-magnitude statistics of aftershocks can be approximated by Gutenberg-Richter scaling. We apply our analysis to 19 prominent aftershock sequences, which occurred in the last 30 years, in order to compute the Bayesian predictive distributions and the corresponding confidence intervals. In the analysis, we use the information of the early aftershocks in the sequences (in the first 1, 10, and 30 days after the main shock) to estimate retrospectively the confidence intervals for the magnitude of the expected largest aftershocks. We demonstrate by analysing 19 past sequences that in many cases we are able to constrain the magnitudes of the largest aftershocks. For example, this includes the analysis of the Darfield (Christchurch) aftershock sequence. The proposed analysis can be used for the earthquake hazard assessment and forecasting associated with the occurrence of large aftershocks. The improvement in instrumental data associated with early aftershocks can greatly enhance the analysis and

  3. ALMA Partners Break Ground on World's Largest Millimeter Wavelength Telescope

    NASA Astrophysics Data System (ADS)

    2003-11-01

    Scientists and dignitaries from North America, Europe, and Chile broke ground today (Thursday, November 6, 2003) on what will be the world's largest, most sensitive radio telescope operating at millimeter wavelengths. ALMA - the Atacama Large Millimeter Array - will be a single instrument composed of 64 high-precision antennas located on the Chajnantor plain of the Chilean Andes in the District of San Pedro de Atacama, 16,500 feet (5,000 meters) above sea level. ALMA's primary function will be to observe and image with unprecedented clarity the enigmatic cold regions of the Universe, which are optically dark, yet shine brightly in the millimeter portion of the electromagnetic spectrum. ALMA Array Artist's Conception of ALMA Array in Compact Configuration (Click on Image for Larger Version) Other Images Available: Artist's conception of the antennas for the Atacama Large Millimeter Array Moonrise over ALMA test equipment near Cerro Chajnantor, Chile VertexRSI antenna at the VLA test site The Atacama Large Millimeter Array is an international astronomy facility. ALMA is an equal partnership between Europe and North America, in cooperation with the Republic of Chile, and is funded in North America by the U.S. National Science Foundation (NSF) in cooperation with the National Research Council of Canada (NRC), and in Europe by the European Southern Observatory (ESO) and Spain. ALMA construction and operations are led on behalf of North America by the National Radio Astronomy Observatory (NRAO), which is managed by Associated Universities, Inc. (AUI), and on behalf of Europe by ESO. "The U.S. National Science Foundation joins today with our North American partner, Canada, and with the European Southern Observatory, Spain, and Chile to prepare for a spectacular new instrument," said Dr. Rita Colwell, director of the U.S. National Science Foundation. "The Atacama Large Millimeter Array will expand our vision of the Universe with "eyes" that pierce the shrouded mantles of

  4. Largest Lyapunov exponents for lattices of interacting classical spins.

    PubMed

    de Wijn, A S; Hess, B; Fine, B V

    2012-07-20

    We investigate how generic the onset of chaos in interacting many-body classical systems is in the context of lattices of classical spins with nearest-neighbor anisotropic couplings. Seven large lattices in different spatial dimensions were considered. For each lattice, more than 2000 largest Lyapunov exponents for randomly sampled Hamiltonians were numerically computed. Our results strongly suggest the absence of integrable nearest-neighbor Hamiltonians for the infinite lattices except for the trivial Ising case. In the vicinity of the Ising case, the largest Lyapunov exponents exhibit a power-law growth, while further away they become rather weakly sensitive to the Hamiltonian anisotropy. We also provide an analytical derivation of these results. PMID:22861854

  5. World's largest TLP moves onto deepwater Norwegian location

    SciTech Connect

    Vielvoye, R.

    1992-05-04

    This paper reports that the world's largest and most sophisticated tension leg platform (TLP) was floated out to Snorre oil field in the Norwegian North Sea last month. The 78,000 ton unit built by Norwegian independent, Sega Petroleum AS, Oslo, was installed in the southern part of block 34/7 and should produce first oil in August, about a month ahead of schedule.

  6. Rare gas record in the largest Apollo 15 rock.

    NASA Technical Reports Server (NTRS)

    Marti, K.; Lightner, B. D.

    1972-01-01

    The results obtained from mass-spectrometry analyses of the noble gases He, Ne, Ar, Kr, and Xe in a 182-mg chip of the largest Apollo 15 rock 15555 are presented. The spallation krypton data indicate a well-shielded location through most of the time during which the rock was exposed to cosmic rays. Gas retention ages are estimated. No evidence for the presence of products from plutonium-244 or iodine-129 was found.

  7. What Is the Largest Einstein Radius in the Universe?

    SciTech Connect

    Oguri, Masamune; Blandford, Roger D.

    2008-08-05

    The Einstein radius plays a central role in lens studies as it characterizes the strength of gravitational lensing. In particular, the distribution of Einstein radii near the upper cutoff should probe the probability distribution of the largest mass concentrations in the universe. Adopting a triaxial halo model, we compute expected distributions of large Einstein radii. To assess the cosmic variance, we generate a number of Monte-Carlo realizations of all-sky catalogues of massive clusters. We find that the expected largest Einstein radius in the universe is sensitive to parameters characterizing the cosmological model, especially {sigma}{sub s}: for a source redshift of unity, they are 42{sub -7}{sup +9}, 35{sub -6}{sup +8}, and 54{sub -7}{sup +12} arcseconds (errors denote 1{sigma} cosmic variance), assuming best-fit cosmological parameters of the Wilkinson Microwave Anisotropy Probe five-year (WMAP5), three-year (WMAP3) and one-year (WMAP1) data, respectively. These values are broadly consistent with current observations given their incompleteness. The mass of the largest lens cluster can be as small as {approx} 10{sup 15} M{sub {circle_dot}}. For the same source redshift, we expect in all-sky {approx} 35 (WMAP5), {approx} 15 (WMAP3), and {approx} 150 (WMAP1) clusters that have Einstein radii larger than 2000. For a larger source redshift of 7, the largest Einstein radii grow approximately twice as large. While the values of the largest Einstein radii are almost unaffected by the level of the primordial non-Gaussianity currently of interest, the measurement of the abundance of moderately large lens clusters should probe non-Gaussianity competitively with cosmic microwave background experiments, but only if other cosmological parameters are well-measured. These semi-analytic predictions are based on a rather simple representation of clusters, and hence calibrating them with N-body simulations will help to improve the accuracy. We also find that these 'superlens

  8. Molecular characterization of the largest subunit of Plasmodium falciparum RNA polymerase I.

    PubMed

    Fox, B A; Li, W B; Tanaka, M; Inselburg, J; Bzik, D J

    1993-09-01

    Plasmodium species possess developmentally regulated ribosomal RNA (rRNA) genes. This report describes the expression and gene structure of the largest subunit of P. falciparum RNA polymerase I (RNAPI), which is responsible for the synthesis of rRNA. The RNAPI largest subunit gene was present as a single copy gene on chromosome 9. Three exons encode the 2910-amino acid RNAPI polypeptide (340 140 Da). A comparison of Plasmodium, Trypanosoma, and Saccharomyces cerevisiae nuclear RNAP largest subunits identified conserved amino acid positions and class-specific amino acid positions. Novel amino acid insertions were found between RNAPI conserved regions A and B (region A'), D and DE1 (region D'), DE2 and E (region DE2'), and F and G (region F'). Leucine zipper domains were found within regions D', DE2, and DE2'. A novel serine-rich repeat domain, a domain with homology to the C-terminal domain of eukaryotic upstream binding factor (UBF), and 4 highly conserved casein kinase II (CKII) Ser/Thr phosphorylation motifs were found within a 127-amino acid sub-region of enlarged region F'. The novel RNAPI serine-rich repeat contained a conserved motif, Ser-X3-Ser, which was also identified in the serine-rich repeat domains of the P. falciparum RNAPII and RNAPIII largest subunits, as well as within a highly homologous serine-rich repeat from trophozoite antigen R45. The results of this molecular analysis indicate that phosphorylation and dephosphorylation mechanisms regulate the activity of P. falciparum RNAPI. PMID:8259131

  9. Publisher's Note: ''The MaPLE device of Saha Institute of Nuclear Physics: Construction and its plasma aspects'' [Rev. Sci. Instrum. 81, 073507 (2010)

    SciTech Connect

    Pal, Rabindranath; Biswas, Subir; Basu, Subhasis; Chattopadhyay, Monobir; Basu, Debjyoti; Chaudhuri, Manis

    2010-07-15

    The Magnetized Plasma Linear Experimental (MaPLE) device is a low cost laboratory plasma device at Saha Institute of Nuclear Physics fabricated in-house with the primary aim of studying basic plasma physics phenomena such as plasma instabilities, wave propagation, and their nonlinear behavior in magnetized plasma regime in a controlled manner. The machine is specially designed to be a versatile laboratory device that can provide a number of magnetic and electric scenario to facilitate such studies. A total of 36 number of 20-turn magnet coils, designed such as to allow easy handling, is capable of producing a uniform, dc magnetic field of about 0.35 T inside the plasma chamber of diameter 0.30 m. Support structure of the coils is planned in an innovative way facilitating straightforward fabrication and easy positioning of the coils. Further special feature lies in the arrangement of the spacers between the coils that can be maneuvered rather easily to create different magnetic configurations. Various methods of plasma production can be suitably utilized according to the experimental needs at either end of the vacuum vessel. In the present paper, characteristics of a steady state plasma generated by electron cyclotron resonance method using 2.45 GHz microwave power are presented. Scans using simple probe drives revealed that a uniform and long plasma column having electron density {approx} 3-5 Multiplication-Sign 1010 cm-3 and temperature {approx} 7-10 eV, is formed in the center of the plasma chamber which is suitable for wave launching experiments.

  10. The 120th anniversary of the birth of Academician D V Skobeltsyn (Joint meeting of the scientific session of the Physical Sciences Division of the Russian Academy of Sciences and the Research Councils of the Lebedev Physical Institute of the Russian Academy of Sciences and of the Skobeltsyn Institute of Nuclear Physics of Lomonosov Moscow State University, 28 November 2012)

    NASA Astrophysics Data System (ADS)

    2013-04-01

    A joint meeting of the scientific session of the Physical Sciences Division of the Russian Academy of Sciences (RAS) and the Research Councils of the Lebedev Physical Institute of the RAS and of the Skobeltsyn Institute of Nuclear Physics of Lomonosov Moscow State University took place at the conference hall of the Lebedev Physical Institute of the RAS on 28 November 2012.The following reports were put on the session agenda as posted on the website http://www.gpad.ac.ru of the RAS Physical Sciences Division:1) Mesyats G A (Lebedev Physical Institute, RAS, Moscow) "Opening remarks"; (2) Sadovnichy V A (Lomonosov Moscow State University, Moscow) "Academician D V Skobeltsyn and Moscow State University"; (3) Dalkarov O D (Lebedev Physical Institute, RAS, Moscow) "Cosmic rays studies at FIAN"; (4) Panasyuk M I, Romanovskii E A (Skobteltsyn Institute of Nuclear Physics of Lomonosov Moscow State University, Moscow) "Academician D V Skobeltsyn -- the founder of the scientific school of nuclear physics at Moscow State University"; (5) Mikhailin V V (Skobeltsyn Institute of Nuclear Physics of Lomonosov Moscow State University, Moscow) "Synchrotron and undulator radiations and their application in spectroscopy"; (6) Toptygin I N (St. Petersburg State Polytechnic University, St. Petersburg) "The Petersburg period in the life of D V Skobeltsyn". Articles based on talks 1, 2, 4-6 are printed below. • Academician D V Skobeltsyn and FIAN, G A Mesyats Physics-Uspekhi, 2013, Volume 56, Number 4, Pages 401-404 • Academician D V Skobeltsyn and Moscow State University, V A Sadovnichy Physics-Uspekhi, 2013, Volume 56, Number 4, Pages 404-406 • Academician D V Skobeltsyn as the founder of the MSU school of nuclear physics, M I Panasyuk, E A Romanovskii Physics-Uspekhi, 2013, Volume 56, Number 4, Pages 406-411 • Synchrotron and undulator radiations and their applications in spectroscopy, V V Mikhailin Physics-Uspekhi, 2013, Volume 56, Number 4, Pages 412-417 • The Petersburg

  11. Numerical simulation of morphodynamic diversity in the World's largest rivers

    NASA Astrophysics Data System (ADS)

    Nicholas, A.

    2012-04-01

    The World's largest rivers share many common properties, including gentle longitudinal bed gradients (~ 0.01-0.1 m per km), high mean annual discharges (~ >10,000 cumecs), and sand-sized bed sediment (D50 ~ 0.1-0.4 mm), yet despite these similarities they are characterised by diverse planform patterns and morphodynamic behaviour (including meandering, braided and anabranching river styles). Recent studies have shown that this diversity cannot be explained using existing channel pattern classification schemes that apply to small rivers. Indeed at present, the causes of morphodynamic diversity in the World's largest rivers remain unclear. Moreover, elucidation of process-form interactions in large rivers is hampered by logistical difficulties involved in field data collection, and by the time period over which satellite imagery is available, which is short given the slow rates of channel change in many large rivers. Numerical models provide a further possible approach for investigating large river morphodynamics. However, although many such models exist, they have generally been developed or applied to simulate either meandering or braided rivers, rather than to investigate a range of channel styles. This paper aims to address this shortcoming using a new numerical simulation model, which is applied to explore the controls on morphodynamic diversity in large sand-bed rivers. This model is based on the 2D shallow water equations with secondary circulation correction, with model components representing total sand transport, suspended transport of silt and clay, bank erosion, vegetation growth and floodplain development. Numerical simulations representing time periods of c. 200 years illustrate how a wide range of channel morphologies, including meandering, braided and anabranching channels, may develop from the same initial conditions and external forcing (valley gradient and discharge regime). These results shed light on the process controls on morphodynamic diversity

  12. Historically largest geomagnetic sudden commencement (SC) since 1868

    NASA Astrophysics Data System (ADS)

    Araki, Tohru

    2014-12-01

    Being stimulated by the previously reported large amplitude (202 nT at Kakioka) geomagnetic sudden commencement (SC) on 24 March 1991, we searched larger amplitude SCs in the past. We tried to collect old magnetograms and used the list of SC observed at Kakioka (27.5° gm.lat.) for the period 1924 to 2013 and Colaba (10.5°)-Alibag (10.3°) for 1868 to 1967. We found that the largest amplitude SC occurred on 24 March (the same day as 1991 SC), 1940. The H-component amplitude is larger than 273 nT at Kakioka and 310 nT at Alibag. We could also obtain the copy of the magnetogram of Cape Town (-33.3°) which shows 164 nT amplitude. The statistical analysis shows that the occurrence rate of SCs is less than 5% for amplitude larger than 50 nT and less than 1% for amplitude larger than 100 nT at both Kakioka and Alibag. Large amplitude SCs tend to occur during the declining phase of the solar activity. Finally, we discussed the possible increase of the dynamic pressure associated with the interplanetary shock causing the largest SC.

  13. Institution Closures.

    ERIC Educational Resources Information Center

    Hayden, Mary F., Ed.; And Others

    1995-01-01

    This newsletter theme issue focuses on the need to accelerate the closing of institutions for people with mental retardation. Articles are by both current and former residents of institutions and by professionals, and include: "The Realities of Institutions" (Tia Nelis); "I Cry Out So That I Won't Go Insane" (Mary F. Hayden); "Trends in…

  14. Earth's Largest Meteorite Impact Craters discovered in South America?

    NASA Astrophysics Data System (ADS)

    Kellndorfer, J. M.; Schmidt-Falkenberg, H.

    2014-12-01

    Novel analysis of high resolution InSAR-based digital elevation data from the year 2001 Shuttle Radar Topography Mission combined with a recently produced dataset of pan-tropical vegetation height from ALOS-1 SAR and IceSAT/GLAS Lidar estimates led to the quasi-bald-Earth discovery of four sizable near-perfect circle arcs in South America under dense tropical forests ranging in length from 216 km to 441 km. Terrain elevation profiles of cross-sections across the arcs show a distinct vertical rising and falling in elevations of hundreds of meters over a horizontal distance of tens of kilometers. It is hypothesized that these sizable arcs and associated rim-like topographic terrain features are remnants of huge meteorite impact craters with diameters ranging from 770 km to 1,310 km, thus forming potentially the largest known impact carter structures discovered on Earth today. The potential impact crater rim structures are located north of the eastern Amazon River, in the coastal region of Recife and Natal, and in the Brazilian, Bolivian and Paraguayan border region encompassing the Pantanal. Elevation profiles, hillshades and gray-shaded elevation maps were produced to support the geomorphologic analysis. It is also speculated whether in three of the four potential impact craters, central uplift domes or peaks, which are typical for complex impact crater structures can be identified. The worlds largest iron ore mining area of Carajás in Para, Brazil, falls exactly in the center of the largest hypothesized circular impact crater showing topographic elevations similar to the rim structure discovered 655 km to the north-north-west. Based on the topographic/geomorphologic driven hypothesis, geologic exploration of these topographic features is needed to test whether indeed meteorite impact craters could be verified, what the more exact ellipsoidal shapes of the potential impact craters might be, and to determine when during geologic times the impacts would have taken

  15. The largest Silurian vertebrate and its palaeoecological implications

    PubMed Central

    Choo, Brian; Zhu, Min; Zhao, Wenjin; Jia, Liaotao; Zhu, You'an

    2014-01-01

    An apparent absence of Silurian fishes more than half-a-metre in length has been viewed as evidence that gnathostomes were restricted in size and diversity prior to the Devonian. Here we describe the largest pre-Devonian vertebrate (Megamastax amblyodus gen. et sp. nov.), a predatory marine osteichthyan from the Silurian Kuanti Formation (late Ludlow, ~423 million years ago) of Yunnan, China, with an estimated length of about 1 meter. The unusual dentition of the new form suggests a durophagous diet which, combined with its large size, indicates a considerable degree of trophic specialisation among early osteichthyans. The lack of large Silurian vertebrates has recently been used as constraint in palaeoatmospheric modelling, with purported lower oxygen levels imposing a physiological size limit. Regardless of the exact causal relationship between oxygen availability and evolutionary success, this finding refutes the assumption that pre-Emsian vertebrates were restricted to small body sizes. PMID:24921626

  16. The depths of the largest impact craters on Venus

    NASA Technical Reports Server (NTRS)

    Ivanov, B. A.; Ford, P. G.

    1993-01-01

    The largest impact craters on Venus may be used as evidence of various geological processes within the Venusian crust. We are continuing to construct a data base for the further investigation of large craters on Venus (LCV). We hope to find evidence of crater relaxation that might constrain the thickness and thermal gradient of the crust, as was proposed in an earlier work. The current work concentrates on 27 impact craters with diameters (d) larger than 70 km, i.e., large enough that the footprint of the Magellan altimeter has a good chance of sampling the true crater bottom. All altimeter echoes from points located within (d/2)+70 km from the crater center have been inspected.

  17. The World's Largest Real Time Magnetometer Array: MAGDAS

    NASA Astrophysics Data System (ADS)

    Maeda, G.; Yumoto, K.; Abe, S.; Uozumi, T.

    2009-12-01

    This poster briefly out lines the current situation of the world's largest real time magnetometer array: MAGDAS. This array was conceived by Professor K. Yumoto of the Space Environment Research Center (SERC) based at Kyushu University in Japan. The first phase of MAGDAS deployment coincided with IHY (Years 2005-2009) and about 50 units were installed all over the world. The second phase of MAGDAS deployment is set to occur during ISWI (Intl. Space Weather Initiative, Years 2010-2012) using a new set of 50 magnetometers. MAGDAS stations are concentrated in three chains: (1) the 210 deg. MM chain through Asia, (2) the 96 deg. MM chain through Africa, and (3) the Dip Equator Chain. Data from MAGDAS is available to the scientific community but some conditions are attached to the data. We explain those conditions.

  18. Basal resistance for three of the largest Greenland outlet glaciers

    NASA Astrophysics Data System (ADS)

    Shapero, Daniel R.; Joughin, Ian R.; Poinar, Kristin; Morlighem, Mathieu; Gillet-Chaulet, Fabien

    2016-01-01

    Resistance at the ice-bed interface provides a strong control on the response of ice streams and outlet glaciers to external forcing, yet it is not observable by remote sensing. We used inverse methods constrained by satellite observations to infer the basal resistance to flow underneath three of the Greenland Ice Sheet's largest outlet glaciers. In regions of fast ice flow and high (>250 kPa) driving stresses, ice is often assumed to flow over a strong bed. We found, however, that the beds of these three glaciers provide almost no resistance under the fast-flowing trunk. Instead, resistance to flow is provided by the lateral margins and stronger beds underlying slower-moving ice upstream. Additionally, we found isolated patches of high basal resistivity within the predominantly weak beds. Because these small-scale (<1 ice thickness) features may be artifacts of overfitting our solution to measurement errors, we tested their robustness to different degrees of regularization.

  19. Water, Sanitation, and Hygiene at the World's Largest Mass Gathering.

    PubMed

    Vortmann, Michael; Balsari, Satchit; Holman, Susan R; Greenough, P Gregg

    2015-02-01

    The 2013 Kumbh Mela, a Hindu religious festival and the largest human gathering on earth, drew an estimated 120 million pilgrims to bathe at the holy confluence of the Ganga (Ganges) and Yamuna rivers. To accommodate the massive numbers, the Indian government constructed a temporary city on the flood plains of the two rivers and provided it with roads, electricity, water and sanitation facilities, police stations, and a tiered healthcare system. This phenomenal operation and its impacts have gone largely undocumented. To address this gap, the authors undertook an evaluation and systematic monitoring initiative to study preparedness and response to public health emergencies at the event. This paper describes the water, sanitation, and hygiene components, with particular emphasis on preventive and mitigation strategies; the capacity for surveillance and response to diarrheal disease outbreaks; and the implications of lessons learned for other mass gatherings. PMID:25783442

  20. Correlates of species richness in the largest Neotropical amphibian radiation

    PubMed Central

    Gonzalez-Voyer, A; Padial, J M; Castroviejo-Fisher, S; De La Riva, I; Vilà, C

    2011-01-01

    Although tropical environments are often considered biodiversity hotspots, it is precisely in such environments where least is known about the factors that drive species richness. Here, we use phylogenetic comparative analyses to study correlates of species richness for the largest Neotropical amphibian radiation: New World direct-developing frogs. Clade-age and species richness were nonsignficantly, negatively correlated, suggesting that clade age alone does not explain among-clade variation in species richness. A combination of ecological and morphological traits explained 65% of the variance in species richness. A more vascularized ventral skin, the ability to colonize high-altitude ranges, encompassing a large variety of vegetation types, correlated significantly with species richness, whereas larger body size was marginally correlated with species richness. Hence, whereas high-altitude ranges play a role in shaping clade diversity in the Neotropics, intrinsic factors, such as skin structures and possibly body size, might ultimately determine which clades are more speciose than others. PMID:21401771

  1. On the macroseismic magnitudes of the largest Italian earthquakes

    NASA Astrophysics Data System (ADS)

    Tinti, S.; Vittori, T.; Mulargia, F.

    1987-07-01

    The macroseismic magnitudes MT of the largest Italian earthquakes ( I0 ⩾ VIII, MCS) have been computed by using the intensity magnitude relationships recently assessed by the authors (1986) for the Italian region. The Progetto Finalizzato Geodinamica (PFG) catalog of the Italian earthquakes, covering the period 1000-1980 (Postpischl, 1985) is the source data base and is reproduced in the Appendix: here the estimated values of MT are given side by side with the catalog macroseismic magnitudes MK i.e. the magnitudes computed according to the Karnik laws (Karnik, 1969). The one-sigma errors Δ MT are also given for each earthquake. The basic aim of the paper is to provide a handy and useful tool to researchers involved in seismicity and seismic-risk studies on Italian territory.

  2. 1. Photocopy of undated wash drawing. The largest building is ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    1. Photocopy of undated wash drawing. The largest building is the Hotel Williams. Next to it is the Williams House (Williams Hotel Annex), HABS No. MI-258 A. Below them are the log cabins built by the American Fur Company (from left to right): Log Building No. 1 (MI-258 C), Log Building No. 2 (MI-258 D), Log Building No. 3 (not documented), Log Building No. 4 (MI-258 E), and Log Building No. 5 (MI-258 F). (Williams Log House, MI-258 B, and Log Building No. 8, MI-258 G, are not shown). The drawing is in the collection of the Michigan Historical Commission. Although it does not have a date, it was painted in the early 20th century after the main building was constructed. - Hotel Williams, Murray Bay, Munising, Alger County, MI

  3. Collapse of the world’s largest herbivores

    PubMed Central

    Ripple, William J.; Newsome, Thomas M.; Wolf, Christopher; Dirzo, Rodolfo; Everatt, Kristoffer T.; Galetti, Mauro; Hayward, Matt W.; Kerley, Graham I. H.; Levi, Taal; Lindsey, Peter A.; Macdonald, David W.; Malhi, Yadvinder; Painter, Luke E.; Sandom, Christopher J.; Terborgh, John; Van Valkenburgh, Blaire

    2015-01-01

    Large wild herbivores are crucial to ecosystems and human societies. We highlight the 74 largest terrestrial herbivore species on Earth (body mass ≥100 kg), the threats they face, their important and often overlooked ecosystem effects, and the conservation efforts needed to save them and their predators from extinction. Large herbivores are generally facing dramatic population declines and range contractions, such that ~60% are threatened with extinction. Nearly all threatened species are in developing countries, where major threats include hunting, land-use change, and resource depression by livestock. Loss of large herbivores can have cascading effects on other species including large carnivores, scavengers, mesoherbivores, small mammals, and ecological processes involving vegetation, hydrology, nutrient cycling, and fire regimes. The rate of large herbivore decline suggests that ever-larger swaths of the world will soon lack many of the vital ecological services these animals provide, resulting in enormous ecological and social costs. PMID:26601172

  4. Opportunities for biodiversity gains under the world's largest reforestation programme.

    PubMed

    Hua, Fangyuan; Wang, Xiaoyang; Zheng, Xinlei; Fisher, Brendan; Wang, Lin; Zhu, Jianguo; Tang, Ya; Yu, Douglas W; Wilcove, David S

    2016-01-01

    Reforestation is a critical means of addressing the environmental and social problems of deforestation. China's Grain-for-Green Program (GFGP) is the world's largest reforestation scheme. Here we provide the first nationwide assessment of the tree composition of GFGP forests and the first combined ecological and economic study aimed at understanding GFGP's biodiversity implications. Across China, GFGP forests are overwhelmingly monocultures or compositionally simple mixed forests. Focusing on birds and bees in Sichuan Province, we find that GFGP reforestation results in modest gains (via mixed forest) and losses (via monocultures) of bird diversity, along with major losses of bee diversity. Moreover, all current modes of GFGP reforestation fall short of restoring biodiversity to levels approximating native forests. However, even within existing modes of reforestation, GFGP can achieve greater biodiversity gains by promoting mixed forests over monocultures; doing so is unlikely to entail major opportunity costs or pose unforeseen economic risks to households. PMID:27598524

  5. The 260: The Largest Solid Rocket Motor Ever Tested

    NASA Technical Reports Server (NTRS)

    Crimmins, P.; Cousineau, M.; Rogers, C.; Shell, V.

    1999-01-01

    Aerojet in the mid 1960s, under contract to NASA, built and static hot fire tested the largest solid rocket motor (SRM) in history for the purpose of demonstrating the feasibility of utilizing large SRMs for space exploration. This program successfully fabricated two high strength steel chambers, loaded each with approximately 1,68 million pounds of propellant, and static test fired these giants with their nozzles up from an underground silo located adjacent to the Florida everglades. Maximum thrust and total impulse in excess of 5,000,000 lbf and 3,470,000,000 lbf-sec were achieved. Flames from the second firing, conducted at night, were seen over eighty miles away. For comparative purposes: the thrust developed was nearly 100 times that of a Minuteman III second stage and the 260 in.-dia cross-section was over 3 times that of the Space Shuttle SRM.

  6. Spitzer/IRAC Photometry Of The Four Largest Uranian Satellites

    NASA Astrophysics Data System (ADS)

    Cartwright, Richard; Emery, J.; Rivkin, A.; Trilling, D.

    2012-10-01

    The surfaces of the four largest Uranian satellites are dominated by water ice and a spectrally neutral constituent that is likely carbonaceous in composition. CO2 ice has been detected on Ariel, Umbriel, and Titania, with no detection on the furthest regular Uranian satellite, Oberon (Grundy et al., 2003, 2006). Whether CO2 ice is primordial or is actively produced in the Uranian system is unclear; however, it seems unlikely that primordial CO2 ice would remain exposed on an icy satellite surface over the age of the Solar System. One possible mechanism for producing CO2 ice is bombardment of water ice and carbonaceous material by charged particles caught in Uranus’ magnetic field. Unlike the other large Uranian satellites, Oberon spends part of its orbit outside the confines of Uranus’ magnetic field, which might help explain why CO2 ice has yet to be detected on Oberon. We are using photometric data gathered by the Infrared Array Camera (IRAC), onboard the Spitzer Space Telescope (SST), in order to search for the signature of CO2 ice on Oberon, and confirm its presence on Ariel, Umbriel, and Titania at longer wavelengths than previous studies. IRAC collects data in four different channels, which are centered roughly at 3.6, 4.5, 5.8, and 8.0 µm. Additionally, we are gathering spectroscopic data using SpeX on IRTF, at similar longitudes to the IRAC observations, in order to characterize the distribution of CO2 ice on these icy satellites over a wide range of near-infrared wavelengths. Our preliminary photometry results for Oberon indicate that there is a steep reduction in reflected solar flux from channel 1 to channel 2, suggesting that surface materials are absorbing photons at wavelengths within the bandpass of channel 2. We will present the results of our photometric analysis of the four largest Uranian moons.

  7. Supergranulation as the Sun's largest buoyantly driven mode of convection

    NASA Astrophysics Data System (ADS)

    Cossette, Jean-Francois; Rast, Mark

    2016-05-01

    Solar supergranulation has been characterized as horizontally divergent flow motions having a typical scale of 32 Mm using Doppler imaging, granule tracking and helioseismology. Unlike granules, the size of which is comparable to both the thickness of the radiative boundary layer and local scale height at the photosphere, supergranules do not appear to correspond to any particular length scale of the flow. Possible explanations ranging from convection theories involving Helium ionization to spatial correlation or self-organization of granular flows have been proposed as physical mechanisms to explain solar supergranulation. However, its existence remains largely a mystery. Remarkably, horizontal velocity power spectra obtained from Doppler imaging and correlation tracking of flow features at the solar surface reveal the presence of peaks corresponding to granular and supergranular scales, followed by a monotonic decrease in power at scales larger than supergranulation, which suggests that large-scale modes in the deep layers of the convection zone may be suppressed. Using 3D anelastic simulations of solar convection we investigate whether supergranulation may reflect the largest buoyantly driven mode of convection inside the Sun. Results show that the amount of kinetic energy contained in the largest flow scales relative to that associated with supergranular motions is a function of the depth of the transition from a convectively unstable to convectively stable mean stratification inside the simulation. This suggests that the observed monotonic decrease in power at scales larger than supergranulation may be explained by rapid cooling in the subphotospheric layers and an essentially isentropic solar interior, wherein convective driving is effectively suppressed.

  8. Largest Aftershocks of Megathrust Earthquakes in the World

    NASA Astrophysics Data System (ADS)

    Koyama, J.; Tsuzuki, M.

    2012-12-01

    The 2011 Tohoku-oki megathrust earthquake of Mw9.0 induced the earthquake activity in high level all over Japan. It included not only earthquakes near active faults but also volcanic earthquakes. Although we have observed tens of thousands of aftershocks, yet we do not know which is the largest aftershock of the 2011 megathrust. There occurred several megathrust earthquakes worldwide in the last one hundred years, which are almost the same size or larger than the 2011 megathrust. We have studied their largest aftershocks based on our new hypothesis of along-dip double segmentation (ADDS) and along-strike single segmentation (ASSS). ADDS in the Tohoku-oki region along the Japan trench is characterized by the apparent absence of earthquakes in the trench-ward segments as opposed to the Japan Island-ward segments that have repeated small earthquakes of up to Mw8 class. In contrast, the 1960 Chile and the 2010 Maule megathrusts are characterized by ASSS with the weak seismic activity before the main event everywhere in the subduction zone. The difference between these two types of seismic segmentations would be that strongly coupled areas of trench-ward segments give rise to ADDS, whereas almost 100% coupled areas of shallow-parts of subduction zones give rise to ASSS. In other words, the phenomenon of a seismic gap can be identified for an ASSS megathrust, where as a doughnut pattern of seismic activity appears prior to a main ADDS event. In summary, most of the largest aftershocks of ADDS megathrusts are earthquakes of outer-rise(outer trench-slope) normal faultings, where there occur two types, dip-slip and strike-slip, depending on the structure of subducting oceanic plates. The 1933 Sanriku-oki Mw8.6 (the 1896 Meiji-Sanriku M~8.5) and the 2011 Tohoku-oki Mw7.7 (the 2011 Tohoku-oki Mw9.0) are the former and the 1987 Off Alaska Mw7.8 (the 1964 Alaska Mw9.2) and the 2012 Sumatra Mw8.6 (the 2004 Sumatra-Andaman Mw9.3) are the latter. Those of ASSS megathrusts occurred

  9. Urban aerosol pollution assessment in Russian largest cities

    NASA Astrophysics Data System (ADS)

    Malinina, Elizaveta; Chubarova, Natalia; Sviridenkov, Mikhail

    2015-04-01

    We assessed the aerosol pollution in 51 Russian largest cities, which are located in different climatic zones with various level of urban pollution using the aerosol optical thickness (AOT) at 550 nm from MODIS data with a spatial resolution 1°×1°during the warm period of 2000-2013. For better understanding of MODIS radiometers quality of AOT data over Russia the comparisons between AERONET data and MODIS data were fulfilled. They showed a good quality of the MODIS data and its possibility to detect an urban pollution from space. As a characteristic of urban aerosol pollution we used the difference between AOT in the city and the background value of AOT in the nearby region. The research showed, that urban aerosol pollution in Russian cities varied from 0.01 to 0.08. Besides, more precise assessment of urban aerosol pollution in Moscow was done basing on the AERONET network data in two sites at Moscow University Meteorological Observatory (MO) and at the Zvenigorod Scientific Station (ZSS). For the assessment the simultaneous measurements at these two sites during the period from September 2006 till July 2013 were taken. The average AOT difference in the visible spectrum (wavelength: 500 nm) between MO and ZSS, which could be used as pollution characteristic, is about 0.02. These results are similar to similar research, which had been made earlier for a shorter period. The difference between AOT at these two sites is the largest in winter and is about 0.03. In order to assess the dominating aerosol components in different cities we used the data of Russian network on emissions and concentrations of the main pollutants over the 1988-2011 period. For each city we evaluated the ratio of sulfur dioxide to nitrogen dioxide emissions and its trends to assess the dominating aerosol properties and temporal variability. As a result, the radiative forcing of urban aerosol pollution for different cities was evaluated. Depending on the location, the size and the level of

  10. Spectral properties of the largest asteroids associated with Taurid Complex

    NASA Astrophysics Data System (ADS)

    Popescu, M.; Birlan, M.; Nedelcu, D. A.; Vaubaillon, J.; Cristescu, C. P.

    2014-12-01

    Context. The Taurid Complex is a massive stream of material in the inner part of the Solar System. It contains objects spanning the range of 10-6-103 m, considered by some authors to have a common cometary origin. The asteroids belonging to Taurid Complex are on Apollo type orbit, with most of them being flagged as potentially hazardous asteroids. In this context, understanding the nature and the origin of this asteroidal population is not only of scientific interest but also of practical importance. Aims: We aim to investigate the surface mineralogy of the asteroids associated with Taurid Complex using visible and near-infrared spectral data. Compositional linking between these asteroids and meteorites can be derived based on the obtained spectra. Methods: We obtained spectra of six of the largest asteroids (2201, 4183, 4486, 5143, 6063, and 269690) associated with Taurid complex. The observations were made with the IRTF telescope equipped with the spectro-imager SpeX. Their taxonomic classification is made using Bus-DeMeo taxonomy. The asteroid spectra are compared with the meteorite spectra from the Relab database. Mineralogical models were applied to determine their surface composition. All the spectral analysis is made in the context of the already published physical data. Results: Five of the objects studied in this paper present spectral characteristics similar to the S taxonomic complex. The spectra of ordinary chondrites (spanning H, L, and LL subtypes) are the best matches for these asteroid spectra. The asteroid (269690) 1996 RG3 presents a flat featureless spectrum which could be associated to a primitive C-type object. The increased reflectance above 2.1 microns constrains its geometrical albedo to a value around 0.03. Conclusions: While there is an important dynamical grouping among the Taurid Complex asteroids, the spectral data of the largest objects do not support a common cometary origin. Furthermore, there are significant variations between the

  11. Largest US oil and gas fields, August 1993

    SciTech Connect

    Not Available

    1993-08-06

    The Largest US Oil and Gas Fields is a technical report and part of an Energy Information Administration (EIA) series presenting distributions of US crude oil and natural gas resources, developed using field-level data collected by EIA`s annual survey of oil and gas proved reserves. The series` objective is to provide useful information beyond that routinely presented in the EIA annual report on crude oil and natural gas reserves. These special reports also will provide oil and gas resource analysts with a fuller understanding of the nature of US crude oil and natural gas occurrence, both at the macro level and with respect to the specific subjects addressed. The series` approach is to integrate EIA`s crude oil and natural gas survey data with related data obtained from other authoritative sources, and then to present illustrations and analyses of interest to a broad spectrum of energy information users ranging from the general public to oil and gas industry personnel.

  12. Claim of largest flood on record proves false

    NASA Astrophysics Data System (ADS)

    Sheffer, N. A.; Enzel, Y.; Waldmann, N.; Grodek, T.; Benito, G.

    A study of paleofloods in the Gardon River in southern France reveals the occurrence of past extreme floods that were larger than any observed historically. From 8 to 9 September 2002, during the course of the study by a complete coincidence, an extreme flood claimed the lives of 21 people and caused millions of dollars worth of damage to the towns and villages along the river. This flood was larger in magnitude than any flood on record, according to gaged data since 1890.An autumn storm, which is typical of this region, struck with immense force. The rain cell migrated from the lower reaches of the basin on the evening of 8 September to the upper parts of the basin, producing 680 mm of rain in 20 hours.The flood's peak discharge is preliminary estimated at 6000 m3 s-1. This flood is now considered by the media and professionals to be “The largest flood on record.” However, our research proves otherwise.

  13. World's Largest Gold Crystal Studied at Los Alamos

    ScienceCinema

    Vogel, Sven; Nakotte, Heinz

    2015-01-07

    When geologist John Rakovan needed better tools to investigate whether a dazzling 217.78-gram piece of gold was in fact the world's largest single-crystal specimen - a distinguishing factor that would not only drastically increase its market value but also provide a unique research opportunity - he traveled to Los Alamos National Laboratory's Lujan Neutron Scattering Center to peer deep inside the mineral using neutron diffractometry. Neutrons, different from other probes such as X-rays and electrons, are able to penetrate many centimeters deep into most materials. Revealing the inner structure of a crystal without destroying the sample - imperative, as this one is worth an estimated $1.5 million - would allow Rakovan and Lujan Center collaborators Sven Vogel and Heinz Nakotte to prove that this exquisite nugget, which seemed almost too perfect and too big to be real, was a single crystal and hence a creation of nature. Its owner, who lives in the United States, provided the samples to Rakovan to assess the crystallinity of four specimens, all of which had been found decades ago in Venezuela.

  14. Holocene dynamics of the Arctic's largest ice shelf

    PubMed Central

    Antoniades, Dermot; Francus, Pierre; Pienitz, Reinhard; St-Onge, Guillaume; Vincent, Warwick F.

    2011-01-01

    Ice shelves in the Arctic lost more than 90% of their total surface area during the 20th century and are continuing to disintegrate rapidly. The significance of these changes, however, is obscured by the poorly constrained ontogeny of Arctic ice shelves. Here we use the sedimentary record behind the largest remaining ice shelf in the Arctic, the Ward Hunt Ice Shelf (Ellesmere Island, Canada), to establish a long-term context in which to evaluate recent ice-shelf deterioration. Multiproxy analysis of sediment cores revealed pronounced biological and geochemical changes in Disraeli Fiord in response to the formation of the Ward Hunt Ice Shelf and its fluctuations through time. Our results show that the ice shelf was absent during the early Holocene and formed 4,000 years ago in response to climate cooling. Paleoecological data then indicate that the Ward Hunt Ice Shelf remained stable for almost three millennia before a major fracturing event that occurred ∼1,400 years ago. After reformation ∼800 years ago, freshwater was a constant feature of Disraeli Fiord until the catastrophic drainage of its epishelf lake in the early 21st century. PMID:22025693

  15. Characterization of the largest effector gene cluster of Ustilago maydis.

    PubMed

    Brefort, Thomas; Tanaka, Shigeyuki; Neidig, Nina; Doehlemann, Gunther; Vincon, Volker; Kahmann, Regine

    2014-07-01

    In the genome of the biotrophic plant pathogen Ustilago maydis, many of the genes coding for secreted protein effectors modulating virulence are arranged in gene clusters. The vast majority of these genes encode novel proteins whose expression is coupled to plant colonization. The largest of these gene clusters, cluster 19A, encodes 24 secreted effectors. Deletion of the entire cluster results in severe attenuation of virulence. Here we present the functional analysis of this genomic region. We show that a 19A deletion mutant behaves like an endophyte, i.e. is still able to colonize plants and complete the infection cycle. However, tumors, the most conspicuous symptoms of maize smut disease, are only rarely formed and fungal biomass in infected tissue is significantly reduced. The generation and analysis of strains carrying sub-deletions identified several genes significantly contributing to tumor formation after seedling infection. Another of the effectors could be linked specifically to anthocyanin induction in the infected tissue. As the individual contributions of these genes to tumor formation were small, we studied the response of maize plants to the whole cluster mutant as well as to several individual mutants by array analysis. This revealed distinct plant responses, demonstrating that the respective effectors have discrete plant targets. We propose that the analysis of plant responses to effector mutant strains that lack a strong virulence phenotype may be a general way to visualize differences in effector function. PMID:24992561

  16. [A Standing Balance Evaluation Method Based on Largest Lyapunov Exponent].

    PubMed

    Liu, Kun; Wang, Hongrui; Xiao, Jinzhuang; Zhao, Qing

    2015-12-01

    In order to evaluate the ability of human standing balance scientifically, we in this study proposed a new evaluation method based on the chaos nonlinear analysis theory. In this method, a sinusoidal acceleration stimulus in forward/backward direction was forced under the subjects' feet, which was supplied by a motion platform. In addition, three acceleration sensors, which were fixed to the shoulder, hip and knee of each subject, were applied to capture the balance adjustment dynamic data. Through reconstructing the system phase space, we calculated the largest Lyapunov exponent (LLE) of the dynamic data of subjects' different segments, then used the sum of the squares of the difference between each LLE (SSDLLE) as the balance capabilities evaluation index. Finally, 20 subjects' indexes were calculated, and compared with evaluation results of existing methods. The results showed that the SSDLLE were more in line with the subjects' performance during the experiment, and it could measure the body's balance ability to some extent. Moreover, the results also illustrated that balance level was determined by the coordinate ability of various joints, and there might be more balance control strategy in the process of maintaining balance. PMID:27079089

  17. World's Largest Gold Crystal Studied at Los Alamos

    SciTech Connect

    Vogel, Sven; Nakotte, Heinz

    2014-04-03

    When geologist John Rakovan needed better tools to investigate whether a dazzling 217.78-gram piece of gold was in fact the world's largest single-crystal specimen - a distinguishing factor that would not only drastically increase its market value but also provide a unique research opportunity - he traveled to Los Alamos National Laboratory's Lujan Neutron Scattering Center to peer deep inside the mineral using neutron diffractometry. Neutrons, different from other probes such as X-rays and electrons, are able to penetrate many centimeters deep into most materials. Revealing the inner structure of a crystal without destroying the sample - imperative, as this one is worth an estimated $1.5 million - would allow Rakovan and Lujan Center collaborators Sven Vogel and Heinz Nakotte to prove that this exquisite nugget, which seemed almost too perfect and too big to be real, was a single crystal and hence a creation of nature. Its owner, who lives in the United States, provided the samples to Rakovan to assess the crystallinity of four specimens, all of which had been found decades ago in Venezuela.

  18. Cosmology on the Largest Scales with the SKA

    NASA Astrophysics Data System (ADS)

    Camera, S.; Raccanelli, A.; Bull, P.; Bertacca, D.; Chen, X.; Ferreira, P.; Kunz, M.; Maartens, R.; Mao, Y.; Santos, M.; Shapiro, P. R.; Viel, M.; Xu, Y.

    2015-04-01

    The study of the Universe on ultra-large scales is one of the major science cases for the Square Kilometre Array (SKA). The SKA will be able to probe a vast volume of the cosmos, thus representing a unique instrument, amongst next-generation cosmological experiments, for scrutinising the Universe's properties on the largest cosmic scales. Probing cosmic structures on extremely large scales will have many advantages. For instance, the growth of perturbations is well understood for those modes, since it falls fully within the linear regime. Also, such scales are unaffected by the poorly understood feedback of baryonic physics. On ultra-large cosmic scales, two key effects become significant: primordial non-Gaussianity and relativistic corrections to cosmological observables. Moreover, if late-time acceleration is driven not by dark energy but by modifications to general relativity, then such modifications should become apparent near and above the horizon scale. As a result, the SKA is forecast to deliver transformational constraints on non-Gaussianity and to probe gravity on super-horizon scales for the first time.

  19. Plans for building the largest thin solenoid ever

    SciTech Connect

    Heim, J.; Bowers, J.; Deis, G.

    1993-09-08

    The superconducting solenoid magnet for the GEM detector poses unusual fabrication and handling challenges because of its extraordinary size. It will be more than 30% larger in diameter than the largest existing particle detector coils. Each of the two coil elements that compose the air-core solenoid, will be about 19 meters in diameter and 15 meters long. Major components weighing as much as 1500 Mg must be transported and manipulated at the Interaction Region 5 (IR5) fabrication site of the SSC Laboratory as the magnets are fabricated. Because of their large size, the magnets will be fabricated, assembled and tested at special purpose facilities at the IR5 site. The site-use plan must accommodate the fabrication of other detector components and the assembly of large flux shaping iron structures in a timely manner to allow subsequent testing and detector assembly. Each cold mass will be composed of twelve 45-Mg coil windings that are joined prior to assembly into the 19-m diam annular cryostat.

  20. Four corners: The largest US methane anomaly viewed from space

    NASA Astrophysics Data System (ADS)

    Kort, Eric A.; Frankenberg, Christian; Costigan, Keeley R.; Lindenmaier, Rodica; Dubey, Manvendra K.; Wunch, Debra

    2014-10-01

    Methane (CH4) is a potent greenhouse gas and ozone precursor. Quantifying methane emissions is critical for projecting and mitigating changes to climate and air quality. Here we present CH4 observations made from space combined with Earth-based remote sensing column measurements. Results indicate the largest anomalous CH4 levels viewable from space over the conterminous U.S. are located at the Four Corners region in the Southwest U.S. Emissions exceeding inventory estimates, totaling 0.59 Tg CH4/yr [0.50-0.67; 2σ], are necessary to bring high-resolution simulations and observations into agreement. This underestimated source approaches 10% of the EPA estimate of total U.S. CH4 emissions from natural gas. The persistence of this CH4 signal from 2003 onward indicates that the source is likely from established gas, coal, and coalbed methane mining and processing. This work demonstrates that space-based observations can identify anomalous CH4 emission source regions and quantify their emissions with the use of a transport model.

  1. Holocene dynamics of the Arctic's largest ice shelf.

    PubMed

    Antoniades, Dermot; Francus, Pierre; Pienitz, Reinhard; St-Onge, Guillaume; Vincent, Warwick F

    2011-11-22

    Ice shelves in the Arctic lost more than 90% of their total surface area during the 20th century and are continuing to disintegrate rapidly. The significance of these changes, however, is obscured by the poorly constrained ontogeny of Arctic ice shelves. Here we use the sedimentary record behind the largest remaining ice shelf in the Arctic, the Ward Hunt Ice Shelf (Ellesmere Island, Canada), to establish a long-term context in which to evaluate recent ice-shelf deterioration. Multiproxy analysis of sediment cores revealed pronounced biological and geochemical changes in Disraeli Fiord in response to the formation of the Ward Hunt Ice Shelf and its fluctuations through time. Our results show that the ice shelf was absent during the early Holocene and formed 4,000 years ago in response to climate cooling. Paleoecological data then indicate that the Ward Hunt Ice Shelf remained stable for almost three millennia before a major fracturing event that occurred ∼1,400 years ago. After reformation ∼800 years ago, freshwater was a constant feature of Disraeli Fiord until the catastrophic drainage of its epishelf lake in the early 21st century. PMID:22025693

  2. Largest meteor since Tunguska event explodes above Russian city

    NASA Astrophysics Data System (ADS)

    Showstack, Randy

    2013-02-01

    The meteor that disintegrated in the atmosphere above Chelyabinsk, Russia, on 15 February, injuring more than 1000 people and causing widespread property damage from the shock wave, is the largest such incident since the 1908 Tunguska event in Siberia, according to Paul Chodas, research scientist in the Near-Earth Object (NEO) program office at NASA's Jet Propulsion Laboratory in Pasadena, Calif. During a 15 February teleconference, Chodas said it was an "incredible coincidence" that asteroid DA14 passed safely by Earth on the same day as the Chelyabinsk meteor; the 45-meter-wide asteroid sped by the planet at a distance of just 27,700 kilometers away on its closest approach. He stressed that the meteor was not related to DA14. The meteor "was coming from the wrong direction and at a completely different velocity," he said, noting that the orbit of the meteor went out to the asteroid belt while the orbit of DA14 "is very Earth-like, it does not go out so far."

  3. Institutional Economics.

    ERIC Educational Resources Information Center

    Samuels, Warren J.

    1984-01-01

    Institutional economics remains a viable alternative approach to economics. It stresses power, technology, and a holistic and evolutionary approach while critiquing the neoclassical approach. General features of institutional economics are examined, and the work of institutionalists in specific areas is discussed. (RM)

  4. Institutional History.

    ERIC Educational Resources Information Center

    Kohlstedt, Sally Gregory

    1985-01-01

    Discusses recent work on scientific institutions in the United States, indicating that although historians have explored the origins of institutions, few have pursued these organizations into their later and perhaps equally complex years. Learned/professional organizations, museums, publications, and philanthropy are among the major topic areas…

  5. [Institutional Renewal].

    ERIC Educational Resources Information Center

    Brown, Peggy, Ed.

    1983-01-01

    The theme of this journal issue is "Institutional Renewal." Projects designed to address the issues of the 1980s at 18 colleges are described, and 15 definitions of institutional renewal are presented. Participating colleges were provided expert advice through the Association of American College's (AAC) Project Lodestar (renamed Consultation and…

  6. Cassini RADAR Observes Titan's Kraken Mare, The Largest Extraterrestrial Sea

    NASA Astrophysics Data System (ADS)

    Kirk, R. L.

    2013-12-01

    Synthetic aperture radar (SAR) imaging by Cassini's RADAR instrument beginning in 2006 revealed the presence of hundreds of hydrocarbon lakes and three large seas in Titan's north polar region [1,2]. Kraken Mare appeared to be the largest sea in IR images [3] but only the northern end was imaged by RADAR prior to 2012. High altitude SAR (HiSAR) observations on recent Titan flybys T84, T91, and T92 now provide complete coverage of Kraken and environs to ~50°N, at resolutions of 2-10 km. Backscatter statistics of the sea are 0.002 × 0.04, i.e., any return is substantially less than the noise and much less than typical dry land cross sections of 0.1-1.5. We conclude that Kraken is liquid filled to substantial depth over its entire extent. A surprising result is that the major seas all lie within a 1800 x 900 km 'box' (Fig.1). A third of the area inside this box (0.6 M km2) is sea, whereas the largest lake outside the box is only 0.005 M km2. Kraken's overall shape is complex (lobateness 4.4 vs 2.1 for Ligeia) but its 0.44 M km2 is divided by 20 to 160 km wide straits into 5 sub-basins that are elongated E-W across the box. Numerous straight shoreline segments parallel the edges of the box. Others parallel the 10°, 80°, and 170°W meridians, as do the rectangular drainage patterns mapped by [4]. These alignments suggest a key role for tectonics in creating the depressions occupied by the northern seas. Fensal and Aztlan (the 'lazy H' of dune-filled lows straddling the equator at longitudes 0°-70°W) form a similar pattern of elongated depressions connected by a narrow strait within a rectangular box. In contrast, Titan's small lakes are widely distributed. Multiple depressions with radar-dark floors have been identified near the south pole and hypothesized as former seabeds [5], but though similar in size to the northern seas, they are not aligned with one another or tightly clustered. Thus, the geography of the north and south poles will remain distinct even if

  7. Global assessment of nutrient loads to the world's largest lakes

    NASA Astrophysics Data System (ADS)

    Fink, Gabriel; Reder, Klara; Malsy, Marcus; Eisner, Stephanie; Flörke, Martina

    2015-04-01

    Lakes are essential resources of drinking water for a large part of mankind. Even so, most of the industrial and domestic waste water is discharged - often untreated - into rivers and streams that are finally the tributaries of these important freshwater bodies. Additionally, diffuse nutrient sources such as fertilizer and atmospheric deposition exacerbate existing algal blooms and low oxygen concentrations in rivers, lakes, and reservoirs. In this tense atmosphere of competing water uses, it is necessary to analyze all sources of pollution as well as their total contributions in order to protect these water bodies against deterioration. Finally, this is a general and urgently needed basis for developing recommendations for involved stakeholders and decision makers. Therefore, the project eartH2Observe, initiated and financed by the European Commission, creates the necessary and underlying quantitative and qualitative hydrological and water use data. In this context, information for global as well as for regional water resource assessments is being prepared based on new earth observations and an ensemble of global hydrological models. As a member of this ensemble, WaterGAP3 provides global estimates of lake water quality relevant parameters on a 5 arc minutes grid, namely total phosphorus and total nitrogen. These nutrient loads to lakes from different sources such as industrial fertilizer, organic fertilizer, domestic loads, atmospheric deposition, and urban surface runoff are estimated for the period 1990 to 2010 in a monthly time step. Whereas nutrient loads and their changes into numerous lakes worldwide are calculated, a special focus is set on nutrient loads into the large and shallow Lake Peipus, which is located between Estonia and Russia and subject to blooms of harmful cyanobacteria. We present estimates, trends, as well as sources of present nutrient loads (TN and TP) to the world's largest lakes with detailed insights to the Lake Peipus situation

  8. U.S.-Russian cooperation in nuclear disarmament and nonproliferation

    NASA Astrophysics Data System (ADS)

    Podvig, Pavel

    2010-02-01

    The United States and Russia, the two largest nuclear powers, have a special obligation to provide leadership in nuclear disarmament and in strengthening the nuclear non-proliferation regime. In the past year the two countries made an effort to restart the arms control process by concluding a new treaty that would bring their legal disarmament obligations in line with the realities of their post-cold war relationships. The process of negotiating deeper nuclear reductions in the new environment turned out to be rather difficult, since the approaches that the countries used in the past are not well suited to dealing with issues like conversion of strategic nuclear delivery systems to conventional missions, tactical nuclear weapons, or dismantlement of nuclear warheads. This presentation considers the recent progress in U.S.-Russian arms control process and outlines the key issues at the negotiations. It also considers prospects for further progress in bilateral nuclear disarmament and issues that will be encountered at later stages of the process. The author argues that success of the arms reductions will depend on whether the United States and Russia will be able to build an institutional framework for cooperation on a range of issues - from traditional arms control to securing nuclear materials and from missile defense to strengthening the international nuclear safeguards. )

  9. Largest geomagnetic sudden commencement (SC) and interplanetary shock

    NASA Astrophysics Data System (ADS)

    Araki, Tohru

    2015-04-01

    The long term variation of amplitude of geomagnetic sudden commencements (SCs) is examined by checking old magnetograms at Kakioka (27.5 deg. geomagnetic latitude) and Alibag (10.3 deg.) and SC lists prepared by both stations. We found that the SC occurred on March 24, 1940 was largest since 1868. The amplitude is 310 nT at Alibag and larger than 273 nT at Kakioka. The magnetogram of Cape Town (-33.3 deg) was also available for this event which shows 164 nT amplitude. This SC occurred during the main phase of a large magnetic storm which has been interested as one of space weather events. The statistical analysis shows that the occurrence probability is less than 5 % for SCs with amplitude larger than 50 nT and less than 1 % for SCs larger than 100 nT at both Kakioka and Alibag. Large amplitude SCs tend to occur in the declining phase of the sun spot cycle as is reported for magnetic storms. Siscoe et al. (1968) firstly proposed the relationship for the solar wind dynamic pressure P and SC amplitude, dH as dH = C*d(P^0.5) where d(P^0.5) shows a jump of the square root of P associated with interplanetary shocks. If we take the proportionality constant C as 15 nT/(nPa)^0.5 and the 300 nT SC amplitude (dH) needs pressure jump from 2 nPa (assumed dynamic pressure in front of the shock) to 460 nPa. If the non-linear effect for magnetospheric compression is taken into account, a larger dynamic pressure will be needed for this large amplitude SC. On the other hand, the proportionality constant, C, might become larger for larger amplitude SC because C includes effects of electric currents induced in the earth. Larger amplitude SCs have larger time variation rate by which C becomes larger and the required dynamic pressure increase becomes smaller. We do not know which of the two competing processes is dominant but we consider that the linear estimation of the required dynamic pressure described above may be valid as the first order approximation.

  10. GIS learning tool for world's largest earthquakes and their causes

    NASA Astrophysics Data System (ADS)

    Chatterjee, Moumita

    The objective of this thesis is to increase awareness about earthquakes among people, especially young students by showing the five largest and two most predictable earthquake locations in the world and their plate tectonic settings. This is a geographic based interactive tool which could be used for learning about the cause of great earthquakes in the past and the safest places on the earth in order to avoid direct effect of earthquakes. This approach provides an effective way of learning for the students as it is very user friendly and more aligned to the interests of the younger generation. In this tool the user can click on the various points located on the world map which will open a picture and link to the webpage for that point, showing detailed information of the earthquake history of that place including magnitude of quake, year of past quakes and the plate tectonic settings that made this place earthquake prone. Apart from knowing the earthquake related information students will also be able to customize the tool to suit their needs or interests. Students will be able to add/remove layers, measure distance between any two points on the map, select any place on the map and know more information for that place, create a layer from this set to do a detail analysis, run a query, change display settings, etc. At the end of this tool the user has to go through the earthquake safely guidelines in order to be safe during an earthquake. This tool uses Java as programming language and uses Map Objects Java Edition (MOJO) provided by ESRI. This tool is developed for educational purpose and hence its interface has been kept simple and easy to use so that students can gain maximum knowledge through it instead of having a hard time to install it. There are lots of details to explore which can help more about what a GIS based tool is capable of. Only thing needed to run this tool is latest JAVA edition installed in their machine. This approach makes study more fun and

  11. CSCAPES Institute

    SciTech Connect

    Alex Pothen

    2008-10-26

    We report on the progress made by researchers of the CSCAPES Institute at Old Dominion University for the years 2007 and 2008 in the areas of research, software creation, education and training, and outreach activities.

  12. E-Competent Teacher and Principal as the Foundation of E-Competent School E-Education, the Largest School Informatization Project in Slovenia 2008-2013

    ERIC Educational Resources Information Center

    Šverc, Magdalena; Flogie, Andrej; Krabonja, Maja Vicic; Percic, Kristjan

    2013-01-01

    During the years 2008-2013 Ministry of Education in the Republic of Slovenia prepared largest project of informatization of educational institutions. One of the main goals of the project E-Education is the development of the standard E-Competent Teacher, School Principal and IT Expert. The standard E-Competent Teacher, Principal and IT Expert…

  13. Drilling the Bushveld Complex- the world's largest layered mafic intrusion

    NASA Astrophysics Data System (ADS)

    Ashwal, L. D.; Webb, S. J.; Trumbull, R. B.

    2013-12-01

    The fact that surprising new discoveries can be made in layered mafic intrusions (e.g., subtle 100-150 m cyclicity in apparently homogeneous cumulates over 1000s of m) means that we are still in the first-order characterization phase of understanding these objects. Accordingly, we have secured funding from ICDP for a planning workshop to be held in Johannesburg in early 2014, aimed at scientific drilling of the Bushveld Complex, the world's largest layered mafic intrusion. Science objectives include, but are not limited to: 1. Magma chamber processes & melt evolution. How many melts/magmas/mushes were involved, what were their compositions and how did they interact? What, if anything, is missing from the Complex, and where did it go? Did Bushveld magmatism have an effect upon Earth's atmosphere at 2 Ga? 2. Crust-mantle interactions & origin of Bushveld granitoids. Are Bushveld granites & rhyolites crustal melts, differentiates from the mafic magmas or products of immiscibility? How can the evolved isotopic signatures in the mafic rocks (e.g., epsilon Nd to -8) be understood? 3. Origin of ore deposits. What were the relative roles of gravity settling, magma mixing, immiscibility and hydrothermal fluid transport in producing the PGE, Cr and V deposits? We have identified 3 potential drilling targets representing a total of ~12 km of drill core. Exact locations of drill sites are to be discussed at the workshop. Target A- East-Central Bushveld Complex. We propose 3 overlapping 3 km boreholes that will provide the first roof-to-floor continuous coverage of the Rustenburg Layered Suite. These boreholes will represent a curated, internationally available reference collection of Bushveld material for present and future research. Target B- Southeastern Bushveld Complex. We propose a single borehole of ~2 km depth, collared in Rooiberg felsite, and positioned to intersect the Roof Zone, Upper Zone, Main Zone and floor of the Complex. Amongst other things, this site will

  14. Smart-Geology for the World's largest fossil oyster reef

    NASA Astrophysics Data System (ADS)

    Dorninger, Peter; Nothegger, Clemens; Djuricic, Ana; Rasztovits, Sascha; Harzhauser, Mathias

    2014-05-01

    The geo-edutainment park "Fossilienwelt Weinviertel" at Stetten in Lower Austria exposes the world's largest fossil oyster biostrome. In the past decade, significant progress has been made in 3D digitizing sensor technology. To cope with the high amount of data, processing methods have been automated to a high degree. Consequently, we formulated the hypothesis that appropriate application of state-of-the-art 3D digitizing, data processing, and visualization technologies allows for a significant automation in paleontological prospection, making an evaluation of huge areas commercially feasible in both time and costs. We call the necessary processing steps "Smart Geology", being characterized by automation and large volumes of data. The Smart Geology project (FWF P 25883-N29) investigates three topics, 3D digitizing, automated geological and paleontological analysis and interpretation and finally investigating the applicability of smart devices for on-site accessibility of project data in order to support the two scientific hypotheses concerning the emerging process of the shell bed, i.e. was it formed by a tsunami or a major storm, and does it preserve pre- and post-event features. This contribution concentrates on the innovative and sophisticated 3D documentation and visualization processes being applied to virtualise approximately 15.000 fossil oysters at the approximately 25 by 17 m accessible shell bad. We decided to use a Terrestrial Laserscanner (TLS) for the determination of the geometrical 3D structures. The TLS achieves about 2 mm single point measurement accuracy. The scanning campaign provides a "raw" point cloud of approximately 1 bio. points at the respective area. Due to the scanning configuration used, the occurrence of occluded ares is minimized hence the full 3D structure of this unique site can be modelled. In addition, approximately 300 photos were taken with a nominal resolution of 0.6 mm per pixel. Sophisticated artificial lightning (close to

  15. The Largest Holocene Eruption of the Central Andes Found

    NASA Astrophysics Data System (ADS)

    Fernandez-Turiel, J.; Rodriguez-Gonzalez, A.; Saavedra, J.; Perez-Torrado, F.; Carracedo, J.; Osterrieth, M.; Carrizo, J.; Esteban, G.

    2013-12-01

    We present new data and interpretation about a major eruption -spreading ˜110 km3 ashes over 440.000 km2- long thought to have occurred around 4200 years ago in the Cerro Blanco Volcanic Complex (CBVC) in NW Argentina. This eruption may be the biggest during the past five millennia in the Central Volcanic Zone of the Andes, and possibly one of the largest Holocene eruptions in the world. The environmental effects of this voluminous eruption are still noticeable, as evidenced by the high content of arsenic and other trace elements in the groundwaters of the Chacopampean Plain. The recognition of this significant volcanic event may shed new light on interpretations of critical changes observed in the mid-Holocene paleontological and archaeological records, and offers researchers an excellent, extensive regional chronostratigraphic marker for reconstructing mid-Holocene geological history over a wide geographical area of South America. More than 100 ashes were sampled in Argentina, Chile and Uruguay during different field campaigns. Ash samples were characterized by scanning electron microscope (SEM), X-ray diffraction (XRD), grain size distributions laser diffraction, and geochemically by electron microprobe (EMPA) and laser ablation-HR-ICP-MS. New and published 14C ages were calibrated to calendar years BP. The age of the most recent CBVC eruption is 4407-4093 cal y BP, indirectly dated by 14C of associated organic sediment within the lower part of a proximal fall deposit of this event (26°53'16.05"S-67°44'48.68"W). This is the youngest record of a major volcanic event in the Southern Puna. This age is consistent with other radiocarbon dates of organic matter in palaeosols underlying or overlying distal ash fall deposits. Based on their products, all of rhyolitic composition, we have distinguished 8 main episodes during the evolution of the most recent CBVC eruption: 1) the eruption began with a white rhyolite lava dome extrusion; 2) followed by a Plinian

  16. Outsourced Investment Management: An Overview for Institutional Decision-Makers

    ERIC Educational Resources Information Center

    Griswold, John S.; Jarvis, William F.

    2013-01-01

    Outsourcing of investment management is a growing trend among institutional investors. With a broad range of institutions using or exploring the outsourced chief investment officer (OCIO) model, portfolio size is no longer the determining factor driving the outsourcing decision. For all but the largest institutional investors--those with deep…

  17. Mapping Biomass for REDD in the Largest Forest of Central Africa: the Democratic Republic of Congo

    NASA Astrophysics Data System (ADS)

    Shapiro, Aurelie; Saatchi, Sassan

    2014-05-01

    With the support of the International Climate Initiative (ICI) of the Federal Ministry of the Environment, Conservation, and Nuclear Security, the implementation of the German Development Bank KfW, the World Wide Fund for Nature (WWF) Germany, the University of California Los Angeles (UCLA) and local DRC partners will produce a national scale biomass map for the entire forest coverage of the Democratic Republic of Congo (DRC) along with feasibility assessments of different forest protection measures within a framework of a REDD+ model project. The « Carbon Map and Model (CO2M&M) » project will produce a national forest biomass map for the DRC, which will enable quantitative assessments of carbon stocks and emissions in the largest forest of the Congo Basin. This effort will support the national REDD (Reducing Emissions from Deforestation and Degradation) program in DRC, which plays a major role in sustainable development and poverty alleviation. This map will be developed from field data, complemented by airborne LiDAR (Light Detection and Ranging) and aerial photos, systematically sampled throughout the forests of the DRC and up-scaled to satellite images to accurately estimate carbon content in all forested areas. The second component of the project is to develop specific approaches for model REDD projects in key landscapes. This project represents the largest LiDAR-derived mapping effort in Africa, under unprecedented logistical constraints, which will provide one of the poorest nations in the world with the richest airborne and satellites derived datasets for analyzing forest structure, biomass and biodiversity.

  18. Radiation Exposure Levels in Diagnostic Patients Injected with 99mTc, 67Ga and 131I at the Mexican National Institute of Cancerology Nuclear Medicine Department

    NASA Astrophysics Data System (ADS)

    Trujillo-Zamudio, F. E.; Gómez-Argumosa, E.; Estrada-Lobato, E.; Medina, L. A.

    2006-09-01

    According to the Mexican Radiation Safety regulations for patients treated in a nuclear medicine service, the exposure rate limit at 1 m from the patients is 5 mR/h before leaving the hospital. Three groups of patients have been monitored after: a) whole body bone studies with 740 MBq of 99mTc-MDP (207 patients); b) infection studies after i.v. administration of 185 MBq of 67Ga (207 patients); and c) thyroid studies with 185 MBq of 131I (142 patients). The results indicated that the average exposure rate levels in each group were: a) 0.57 ± 0.17 mR/h, b) 0.47 ± 0.20 mR/h, and c) 0.86 ± 0.14 mR/h. This study has shown that the Nuclear Medicine Department at INCAN complies with the NOM-013-NUCL-1995 Mexican regulation.

  19. Radiation Exposure Levels in Diagnostic Patients Injected with 99mTc, 67Ga and 131I at the Mexican National Institute of Cancerology Nuclear Medicine Department

    SciTech Connect

    Trujillo-Zamudio, F. E.; Gomez-Argumosa, E.; Estrada-Lobato, E.; Medina, L. A.

    2006-09-08

    According to the Mexican Radiation Safety regulations for patients treated in a nuclear medicine service, the exposure rate limit at 1 m from the patients is 5 mR/h before leaving the hospital. Three groups of patients have been monitored after: a) whole body bone studies with 740 MBq of 99mTc-MDP (207 patients); b) infection studies after i.v. administration of 185 MBq of 67Ga (207 patients); and c) thyroid studies with 185 MBq of 131I (142 patients). The results indicated that the average exposure rate levels in each group were: a) 0.57 {+-} 0.17 mR/h, b) 0.47 {+-} 0.20 mR/h, and c) 0.86 {+-} 0.14 mR/h. This study has shown that the Nuclear Medicine Department at INCAN complies with the NOM-013-NUCL-1995 Mexican regulation.

  20. Prescription patterns of psychotropic medications for the treatment of psychotic disorders in the largest mental health institutions of Uganda.

    PubMed

    Rukat, Annika; Musisi, Seggane; Ströhle, Andreas; Mundt, Adrian P

    2014-10-01

    The study describes prescription patterns of psychotropic medications for patients treated for psychosis in psychiatric hospitals of Uganda. A cross-sectional quantitative survey of age, sex, diagnoses, and psychotropic medication of 682 psychiatric inpatients of the 2 national referral hospitals in Uganda was conducted on 1 day in March 2012. The percentage of patients treated with the same substance within the diagnostic categories schizophrenia, bipolar affective disorder, unspecified psychosis, and depressive disorder was calculated. Close to 90% of the patients with conditions diagnosed with any psychotic disorder were treated with first-generation antipsychotic drugs (eg, chlorpromazine, haloperidol, trifluoperazine, and depot fluphenazine). Carbamazepine in combination with first-generation antipsychotics was prescribed frequently (45%) for the treatment of bipolar affective disorder. The use of second-generation antipsychotics, lithium, and valproic acid was exceptional. Patients with depression usually received a combination (63%) of first-generation antipsychotics and antidepressants (fluoxetine or amitriptyline). Benzodiazepines were only infrequently used for patients diagnosed with psychoses. First-generation antipsychotics, antidepressants, and carbamazepine were the most frequently used medications for treatment of psychosis in Uganda. Although lithium and valproic acid were on the essential drug list in Uganda, their use was still infrequent. There is a need to ensure the practical availability of the drugs listed on the essential drug list and to support the implementation of their use in clinical practice. PMID:24943390

  1. Nuclear materials in Japan

    NASA Astrophysics Data System (ADS)

    2015-03-01

    The incident at Fukushima Daiichi brought materials in the nuclear industry into the spotlight. Nature Materials talks to Tatsuo Shikama, Director of the International Research Centre for Nuclear Materials, Institute for Materials Research, Tohoku University, about the current situation.

  2. Institutional Bonding.

    ERIC Educational Resources Information Center

    Allard, M. June

    Institutional bonding was examined at a public, urban commuter college with exceptionally high attrition and visibly low morale. Changes in bonding and attrition were measured 6 years after a 2-year effort to develop school identity and student feelings of membership. It was found that a simple index of campus morale is provided by level of…

  3. Institutional Paralysis

    ERIC Educational Resources Information Center

    Yarmolinsky, Adam

    1975-01-01

    Institutional paralysis of higher education is the result of the disjunction between faculty and administration; the disjunction between substantive planning and bugetary decision-making; the disjunction between departmental structures and functional areas of university concern; and the disjunction between the theory of direct democracy and its…

  4. Institutional betrayal.

    PubMed

    Smith, Carly Parnitzke; Freyd, Jennifer J

    2014-09-01

    A college freshman reports a sexual assault and is met with harassment and insensitive investigative practices leading to her suicide. Former grade school students, now grown, come forward to report childhood abuse perpetrated by clergy, coaches, and teachers--first in trickles and then in waves, exposing multiple perpetrators with decades of unfettered access to victims. Members of the armed services elect to stay quiet about sexual harassment and assault during their military service or risk their careers by speaking up. A Jewish academic struggles to find a name for the systematic destruction of his people in Nazi Germany during the Holocaust. These seemingly disparate experiences have in common trusted and powerful institutions (schools, churches, military, government) acting in ways that visit harm upon those dependent on them for safety and well-being. This is institutional betrayal. The purpose of this article is to describe psychological research that examines the role of institutions in traumatic experiences and psychological distress following these experiences. We demonstrate the ways in which institutional betrayal has been left unseen by both the individuals being betrayed as well as the field of psychology and introduce means by which to identify and address this betrayal. PMID:25197837

  5. Institution Morphisms

    NASA Technical Reports Server (NTRS)

    Goguen, Joseph; Rosu, Grigore; Norvig, Peter (Technical Monitor)

    2001-01-01

    Institutions formalize the intuitive notion of logical system, including both syntax and semantics. A surprising number of different notions of morphisim have been suggested for forming categories with institutions as objects, and a surprising variety of names have been proposed for them. One goal of this paper is to suggest a terminology that is both uniform and informative to replace the current rather chaotic nomenclature. Another goal is to investigate the properties and interrelations of these notions. Following brief expositions of indexed categories, twisted relations, and Kan extensions, we demonstrate and then exploit the duality between institution morphisms in the original sense of Goguen and Burstall, and the 'plain maps' of Meseguer, obtaining simple uniform proofs of completeness and cocompleteness for both resulting categories; because of this duality, we prefer the name 'comorphism' over 'plain map.' We next consider 'theoroidal' morphisms and comorphisims, which generalize signatures to theories, finding that the 'maps' of Meseguer are theoroidal comorphisms, while theoroidal morphisms are a new concept. We then introduce 'forward' and 'semi-natural' morphisms, and appendices discuss institutions for hidden algebra, universal algebra, partial equational logic, and a variant of order sorted algebra supporting partiality.

  6. Annual Report FY2013-- A Kinematically Complete, Interdisciplinary, and Co-Institutional Measurement of the 19F(α,n) Cross-section for Nuclear Safeguards Science

    SciTech Connect

    Peters, William A; Smith, Michael Scott; Clement, Ryan; Tan, Wanpeng; Stech, Ed; Cizewski, J A; Febbraro, Michael; Madurga Flores, Miguel

    2013-10-01

    The goal of this proposal is to enable neutron detection for precision Non-Destructive Assays (NDAs) of actinide-fluoride samples. Neutrons are continuously generated from a UFx matrix in a container or sample as a result of the interaction of alpha particles from uranium-decay α particles with fluorine nuclei in the matrix. Neutrons from 19F(α,n)22Na were once considered a poorly characterized background for assays of UFx samples via 238U spontaneous fission neutron detection [SMI2010B]. However, the yield of decay-α-driven neutrons is critical for 234,235U LEU and HEU assays, as it can used to determine both the total amount of uranium and the enrichment [BER2010]. This approach can be extremely valuable in a variety of safeguard applications, such as cylinder monitoring in underground uranium storage facilities, nuclear criticality safety studies, nuclear materials accounting, and other nonproliferation applications. The success of neutron-based assays critically depends on an accurate knowledge of the cross section of the (α,n) reaction that generates the neutrons. The 40% uncertainty in the 19F(α,n)22Na cross section currently limits the precision of such assays, and has been identified as a key factor in preventing accurate enrichment determinations [CRO2003]. The need for higher quality cross section data for (α,n) reactions has been a recurring conclusion in reviews of the nuclear data needs to support safeguards. The overarching goal of this project is to enable neutron detection to be used for precision Non- Destructive Assays (NDAs) of actinide-fluoride samples. This will significantly advance safeguards verification at existing declared facilities, nuclear materials accounting, process control, nuclear criticality safety monitoring, and a variety of other nonproliferation applications. To reach this goal, Idaho National Laboratory (INL), in partnership with Oak Ridge National Laboratory (ORNL), Rutgers University (RU), and the University of Notre

  7. 10 CFR 61.14 - Institutional information.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 10 Energy 2 2011-01-01 2011-01-01 false Institutional information. 61.14 Section 61.14 Energy NUCLEAR REGULATORY COMMISSION (CONTINUED) LICENSING REQUIREMENTS FOR LAND DISPOSAL OF RADIOACTIVE WASTE Licenses § 61.14 Institutional information. The institutional information must include: (a) A...

  8. Next-Generation Museomics Disentangles One of the Largest Primate Radiations

    PubMed Central

    Krause, Johannes; Sawyer, Susanna; Valente, Luis M.; Bailey, Sebastian; Finstermeier, Knut; Sabin, Richard; Gilissen, Emmanuel; Sonet, Gontran; Nagy, Zoltán T.; Lenglet, Georges; Mayer, Frieder; Savolainen, Vincent

    2013-01-01

    Guenons (tribe Cercopithecini) are one of the most diverse groups of primates. They occupy all of sub-Saharan Africa and show great variation in ecology, behavior, and morphology. This variation led to the description of over 60 species and subspecies. Here, using next-generation DNA sequencing (NGS) in combination with targeted DNA capture, we sequenced 92 mitochondrial genomes from museum-preserved specimens as old as 117 years. We infer evolutionary relationships and estimate divergence times of almost all guenon taxa based on mitochondrial genome sequences. Using this phylogenetic framework, we infer divergence dates and reconstruct ancestral geographic ranges. We conclude that the extraordinary radiation of guenons has been a complex process driven by, among other factors, localized fluctuations of African forest cover. We find incongruences between phylogenetic trees reconstructed from mitochondrial and nuclear DNA sequences, which can be explained by either incomplete lineage sorting or hybridization. Furthermore, having produced the largest mitochondrial DNA data set from museum specimens, we document how NGS technologies can “unlock” museum collections, thereby helping to unravel the tree-of-life. [Museum collection; next-generation DNA sequencing; primate radiation; speciation; target capture.] PMID:23503595

  9. Next-generation museomics disentangles one of the largest primate radiations.

    PubMed

    Guschanski, Katerina; Krause, Johannes; Sawyer, Susanna; Valente, Luis M; Bailey, Sebastian; Finstermeier, Knut; Sabin, Richard; Gilissen, Emmanuel; Sonet, Gontran; Nagy, Zoltán T; Lenglet, Georges; Mayer, Frieder; Savolainen, Vincent

    2013-07-01

    Guenons (tribe Cercopithecini) are one of the most diverse groups of primates. They occupy all of sub-Saharan Africa and show great variation in ecology, behavior, and morphology. This variation led to the description of over 60 species and subspecies. Here, using next-generation DNA sequencing (NGS) in combination with targeted DNA capture, we sequenced 92 mitochondrial genomes from museum-preserved specimens as old as 117 years. We infer evolutionary relationships and estimate divergence times of almost all guenon taxa based on mitochondrial genome sequences. Using this phylogenetic framework, we infer divergence dates and reconstruct ancestral geographic ranges. We conclude that the extraordinary radiation of guenons has been a complex process driven by, among other factors, localized fluctuations of African forest cover. We find incongruences between phylogenetic trees reconstructed from mitochondrial and nuclear DNA sequences, which can be explained by either incomplete lineage sorting or hybridization. Furthermore, having produced the largest mitochondrial DNA data set from museum specimens, we document how NGS technologies can "unlock" museum collections, thereby helping to unravel the tree-of-life. PMID:23503595

  10. Astronomer's new guide to the galaxy: largest map of cold dust revealed

    NASA Astrophysics Data System (ADS)

    2009-07-01

    Astronomers have unveiled an unprecedented new atlas of the inner regions of the Milky Way, our home galaxy, peppered with thousands of previously undiscovered dense knots of cold cosmic dust -- the potential birthplaces of new stars. Made using observations from the APEX telescope in Chile, this survey is the largest map of cold dust so far, and will prove an invaluable map for observations made with the forthcoming ALMA telescope, as well as the recently launched ESA Herschel space telescope. ESO PR Photo 24a/09 View of the Galactic Plane from the ATLASGAL survey (annotated and in five sections) ESO PR Photo 24b/09 View of the Galactic Plane from the ATLASGAL survey (annotated) ESO PR Photo 24c/09 View of the Galactic Plane from the ATLASGAL survey (in five sections) ESO PR Photo 24d/09 View of the Galactic Plane from the ATLASGAL survey ESO PR Photo 24e/09 The Galactic Centre and Sagittarius B2 ESO PR Photo 24f/09 The NGC 6357 and NGC 6334 nebulae ESO PR Photo 24g/09 The RCW120 nebula ESO PR Video 24a/09 Annotated pan as seen by the ATLASGAL survey This new guide for astronomers, known as the APEX Telescope Large Area Survey of the Galaxy (ATLASGAL) shows the Milky Way in submillimetre-wavelength light (between infrared light and radio waves [1]). Images of the cosmos at these wavelengths are vital for studying the birthplaces of new stars and the structure of the crowded galactic core. "ATLASGAL gives us a new look at the Milky Way. Not only will it help us investigate how massive stars form, but it will also give us an overview of the larger-scale structure of our galaxy", said Frederic Schuller from the Max Planck Institute for Radio Astronomy, leader of the ATLASGAL team. The area of the new submillimetre map is approximately 95 square degrees, covering a very long and narrow strip along the galactic plane two degrees wide (four times the width of the full Moon) and over 40 degrees long. The 16 000 pixel-long map was made with the LABOCA submillimetre

  11. Bryant and Stratton Business Institute, Buffalo.

    ERIC Educational Resources Information Center

    Attmore, Robert H.

    In June 1992, the New York State Office of the Comptroller performed an audit of Tuition Assistance Program (TAP) and Supplemental Tuition Assistance Program (STAP) awards at Bryant and Stratton Business Institute's Buffalo Campus (BC). TAP, the largest student grant and scholarship program administered by the Higher Education Services Corporation…

  12. Kalman filter-based fast track reconstruction for charged particles in a Compressed Baryonic Matter experiment using parallel computing on a multicore server at the Laboratory of Information Technologies, Joint Institute for Nuclear Research

    NASA Astrophysics Data System (ADS)

    Ablyazimov, T. O.; Zyzak, M. V.; Ivanov, V. V.; Kisel, P. I.

    2015-05-01

    One of the main goals in the Compressed Baryonic Matter (CBM) experiment (GSI, Germany) is to find parameters of charged particle trajectories. An online full event reconstruction is planned to be carried out in this experiment, thus demanding fast algorithms be developed, which make the most of the capabilities of modern CPU and GPU architectures. This paper presents the results of an analysis of the Kalman filter-based track reconstruction for charged particles implemented by using various code parallelization methods. A multicore server located at the Laboratory of Information Technologies, Joint Institute for Nuclear Research (LIT JINR), with two CPU Intel Xeon X5660 processors and a GPU Nvidia GTX 480 video card is used.

  13. Institute news

    NASA Astrophysics Data System (ADS)

    1999-11-01

    Joining the team A new member of staff has recently joined the Institute of Physics Education Department (Schools and Colleges) team. (Dr) Steven Chapman will have managerial responsibility for physics education issues in the 11 - 16 age range, particularly on the policy side. He will work closely with Mary Wood, who spends much of her time out and about doing the practical things to support physics education pre-16. Catherine Wilson will be spending more of her time working to support the Post-16 Physics Initiative but retains overall responsibility for the department. Steven graduated in Physics and Astronomy and then went on to do his doctorate at Sussex University. He stayed in the research field for a while, including a period at NPL. Then, having decided to train as a teacher, he taught for the last five years, most recently at a brand new school in Sutton where he was Head of Physics. Physics update Dates for `Physics Update' courses in 2000, intended for practising science teachers, are as follows: 1 - 3 April: Malvern College 9 - 10 June: Stirling University 8 - 10 July: York University 8 - 10 December: Oxford University The deadline for applications for the course to be held on 11 - 13 December 1999 at the School of Physics, Exeter University, is 12 November, so any late enquiries should be sent to Leila Solomon at The Institute of Physics, 76 Portland Place, London W1N 3DH (tel: 020 7470 4821) right away. Name that teacher! Late nominations are still welcome for the Teachers of Physics/Teachers of Primary Science awards for the year 2000. Closing date for nominations is `the last week in November'. Further details can be obtained from Catherine Wilson or Barbara Hill in the Institute's Education Department. Forward and back! The Education Group's one-day meeting on 13 November is accepting bookings until almost the last minute, so don't delay your application! The day is entitled `Post-16 physics: Looking forward, learning from the past' and it aims to

  14. Institute news

    NASA Astrophysics Data System (ADS)

    1999-11-01

    Joining the team A new member of staff has recently joined the Institute of Physics Education Department (Schools and Colleges) team. (Dr) Steven Chapman will have managerial responsibility for physics education issues in the 11 - 16 age range, particularly on the policy side. He will work closely with Mary Wood, who spends much of her time out and about doing the practical things to support physics education pre-16. Catherine Wilson will be spending more of her time working to support the Post-16 Physics Initiative but retains overall responsibility for the department. Steven graduated in Physics and Astronomy and then went on to do his doctorate at Sussex University. He stayed in the research field for a while, including a period at NPL. Then, having decided to train as a teacher, he taught for the last five years, most recently at a brand new school in Sutton where he was Head of Physics. Physics update Dates for `Physics Update' courses in 2000, intended for practising science teachers, are as follows: 1 - 3 April: Malvern College 9 - 10 June: Stirling University 8 - 10 July: York University 8 - 10 December: Oxford University The deadline for applications for the course to be held on 11 - 13 December 1999 at the School of Physics, Exeter University, is 12 November, so any late enquiries should be sent to Leila Solomon at The Institute of Physics, 76 Portland Place, London W1N 3DH (tel: 020 7470 4821) right away. Name that teacher! Late nominations are still welcome for the Teachers of Physics/Teachers of Primary Science awards for the year 2000. Closing date for nominations is `the last week in November'. Further details can be obtained from Catherine Wilson or Barbara Hill in the Institute's Education Department. Forward and back! The Education Group's one-day meeting on 13 November is accepting bookings until almost the last minute, so don't delay your application! The day is entitled `Post-16 physics: Looking forward, learning from the past' and it aims to

  15. Accelerated Hyperfractionated Radiotherapy for Cervical Cancer: Multi-Institutional Prospective Study of Forum for Nuclear Cooperation in Asia Among Eight Asian Countries

    SciTech Connect

    Ohno, Tatsuya Nakano, Takashi; Kato, Shingo

    2008-04-01

    Purpose: To evaluate the toxicity and efficacy of accelerated hyperfractionated radiotherapy (RT) for locally advanced cervical cancer. Methods and Materials: A multi-institutional prospective single-arm study was conducted among eight Asian countries. Between 1999 and 2002, 120 patients (64 with Stage IIB and 56 with Stage IIIB) with squamous cell carcinoma of the cervix were treated with accelerated hyperfractionated RT. External beam RT consisted of 30 Gy to the whole pelvis, 1.5 Gy/fraction twice daily, followed by 20 Gy of pelvic RT with central shielding at a dose of 2-Gy fractions daily. A small bowel displacement device was used with the patient in the prone position. In addition to central shielding RT, intracavitary brachytherapy was started. Acute and late morbidities were graded according to the Radiation Therapy Oncology Group and Radiation Therapy Oncology Group/European Organization for Research and Treatment of Cancer criteria. Results: The median overall treatment time was 35 days. The median follow-up time for surviving patients was 4.7 years. The 5-year pelvic control and overall survival rate for all patients was 84% and 70%, respectively. The 5-year pelvic control and overall survival rate was 78% and 69% for tumors {>=}6 cm in diameter, respectively. No treatment-related death occurred. Grade 3-4 late toxicities of the small intestine, large intestine, and bladder were observed in 1, 1, and 2 patients, respectively. The 5-year actuarial rate of Grade 3-4 late toxicity at any site was 5%. Conclusion: The results of our study have shown that accelerated hyperfractionated RT achieved sufficient pelvic control and survival without increasing severe toxicity. This treatment could be feasible in those Asian countries where chemoradiotherapy is not available.

  16. Engineering the largest RNA virus genome as an infectious bacterial artificial chromosome

    PubMed Central

    Almazán, Fernando; González, José M.; Pénzes, Zoltan; Izeta, Ander; Calvo, Enrique; Plana-Durán, Juan; Enjuanes, Luis

    2000-01-01

    The construction of cDNA clones encoding large-size RNA molecules of biological interest, like coronavirus genomes, which are among the largest mature RNA molecules known to biology, has been hampered by the instability of those cDNAs in bacteria. Herein, we show that the application of two strategies, cloning of the cDNAs into a bacterial artificial chromosome and nuclear expression of RNAs that are typically produced within the cytoplasm, is useful for the engineering of large RNA molecules. A cDNA encoding an infectious coronavirus RNA genome has been cloned as a bacterial artificial chromosome. The rescued coronavirus conserved all of the genetic markers introduced throughout the sequence and showed a standard mRNA pattern and the antigenic characteristics expected for the synthetic virus. The cDNA was transcribed within the nucleus, and the RNA translocated to the cytoplasm. Interestingly, the recovered virus had essentially the same sequence as the original one, and no splicing was observed. The cDNA was derived from an attenuated isolate that replicates exclusively in the respiratory tract of swine. During the engineering of the infectious cDNA, the spike gene of the virus was replaced by the spike gene of an enteric isolate. The synthetic virus replicated abundantly in the enteric tract and was fully virulent, demonstrating that the tropism and virulence of the recovered coronavirus can be modified. This demonstration opens up the possibility of employing this infectious cDNA as a vector for vaccine development in human, porcine, canine, and feline species susceptible to group 1 coronaviruses. PMID:10805807

  17. How Does Institutional Grant Aid Impact College Choice? Research Brief

    ERIC Educational Resources Information Center

    Hurwitz, Michael

    2012-01-01

    New evidence on how students' choice of postsecondary institution is sensitive to grant aid offers from the colleges and universities. Institutional aid sensitivity is largest for students from the least wealthy families but does not vary by race/ethnicity or measured academic ability. A technical appendix is included.

  18. An Institutional Approach to Course Redesign at a Hispanic-Serving Institution

    ERIC Educational Resources Information Center

    Sanchez, Rudolph J.; Ramirez, Adrian D.; Hernandez, Chris

    2013-01-01

    As with many higher education institutions, Fresno State struggles with graduation rates. The overall six-year graduation rate for first-time, full-time freshmen hovers around 50 percent. The graduation gap between the two largest ethnic groups, White (55.6) and Hispanic (43.5), was 12.1 percentage points in 2012. This article reports on the…

  19. Production of cloned NIBS (Nippon Institute for Biological Science) and α-1, 3-galactosyltransferase knockout MGH miniature pigs by somatic cell nuclear transfer using the NIBS breed as surrogates

    PubMed Central

    Shimatsu, Yoshiki; Yamada, Kazuhiko; Horii, Wataru; Hirakata, Atsushi; Sakamoto, Yuji; Waki, Shiori; Sano, Junichi; Saitoh, Toshiki; Sahara, Hisashi; Shimizu, Akira; Yazawa, Hajime; Sachs, David H.; Nunoya, Tetsuo

    2013-01-01

    Background Nuclear transfer (NT) technologies offer a means for producing the genetically modified pigs necessary to develop swine models for mechanistic studies of disease processes as well as to serve as organ donors for xenotransplantation. Most previous studies have used commercial pigs as surrogates. Method and Results In this study, we established a cloning technique for miniature pigs by somatic cell nuclear transfer (SCNT) using Nippon Institute for Biological Science (NIBS) miniature pigs as surrogates. Moreover, utilizing this technique, we have successfully produced an α-1, 3-galactosyltransferase knockout (GalT-KO) miniature swine. Fibroblasts procured from a NIBS miniature pig fetus were injected into 1312 enucleated oocytes. The cloned embryos were transferred to 11 surrogates of which five successfully delivered 13 cloned offspring; the production efficiency was 1.0% (13/1312). In a second experiment, lung fibroblasts obtained from neonatal GalT-KO MGH miniature swine were used as donor cells and 1953 cloned embryos were transferred to 12 surrogates. Six cloned offspring were born from five surrogates, a production efficiency of 0.3% (6/1953). Conclusions These results demonstrate successful establishment of a miniature pig cloning technique by SCNT using NIBS miniature pigs as surrogates. To our knowledge, this is the first demonstration of successful production of GalT-KO miniature swine using miniature swine surrogates. This technique could help to ensure a stable supply of the cloned pigs through the use of miniature pig surrogates and could expand production in countries with limited space or in facilities with special regulations such as specific pathogen-free or good laboratory practice. PMID:23581451

  20. NRPB3, the third largest subunit of RNA polymerase II, is essential for stomatal patterning and differentiation in Arabidopsis

    PubMed Central

    Chen, Liang; Guan, Liping; Qian, Pingping; Xu, Fan; Wu, Zhongliang; Wu, Yujun; He, Kai; Gou, Xiaoping; Li, Jia; Hou, Suiwen

    2016-01-01

    ABSTRACT Stomata are highly specialized epidermal structures that control transpiration and gas exchange between plants and the environment. Signal networks underlying stomatal development have been previously uncovered but much less is known about how signals involved in stomatal development are transmitted to RNA polymerase II (Pol II or RPB), which plays a central role in the transcription of mRNA coding genes. Here, we identify a partial loss-of-function mutation of the third largest subunit of nuclear DNA-dependent Pol II (NRPB3) that exhibits an increased number of stomatal lineage cells and paired stomata. Phenotypic and genetic analyses indicated that NRPB3 is not only required for correct stomatal patterning, but is also essential for stomatal differentiation. Protein-protein interaction assays showed that NRPB3 directly interacts with two basic helix-loop-helix (bHLH) transcription factors, FAMA and INDUCER OF CBF EXPRESSION1 (ICE1), indicating that NRPB3 serves as an acceptor for signals from transcription factors involved in stomatal development. Our findings highlight the surprisingly conserved activating mechanisms mediated by the third largest subunit of Pol II in eukaryotes. PMID:26989174

  1. NRPB3, the third largest subunit of RNA polymerase II, is essential for stomatal patterning and differentiation in Arabidopsis.

    PubMed

    Chen, Liang; Guan, Liping; Qian, Pingping; Xu, Fan; Wu, Zhongliang; Wu, Yujun; He, Kai; Gou, Xiaoping; Li, Jia; Hou, Suiwen

    2016-05-01

    Stomata are highly specialized epidermal structures that control transpiration and gas exchange between plants and the environment. Signal networks underlying stomatal development have been previously uncovered but much less is known about how signals involved in stomatal development are transmitted to RNA polymerase II (Pol II or RPB), which plays a central role in the transcription of mRNA coding genes. Here, we identify a partial loss-of-function mutation of the third largest subunit of nuclear DNA-dependent Pol II (NRPB3) that exhibits an increased number of stomatal lineage cells and paired stomata. Phenotypic and genetic analyses indicated that NRPB3 is not only required for correct stomatal patterning, but is also essential for stomatal differentiation. Protein-protein interaction assays showed that NRPB3 directly interacts with two basic helix-loop-helix (bHLH) transcription factors, FAMA and INDUCER OF CBF EXPRESSION1 (ICE1), indicating that NRPB3 serves as an acceptor for signals from transcription factors involved in stomatal development. Our findings highlight the surprisingly conserved activating mechanisms mediated by the third largest subunit of Pol II in eukaryotes. PMID:26989174

  2. NCI launches largest-ever study of breast cancer genetics in black women

    Cancer.gov

    The Breast Cancer Genetic Study in African-Ancestry Populations initiative is a collaborative research project that will identify genetic factors that may underlie breast cancer disparities. It is the largest study ever to investigate how genetic and biol

  3. Nuclear Technology Series. Course 23: Nuclear Chemical Processes.

    ERIC Educational Resources Information Center

    Center for Occupational Research and Development, Inc., Waco, TX.

    This technical specialty course is one of thirty-five courses designed for use by two-year postsecondary institutions in five nuclear technician curriculum areas: (1) radiation protection technician, (2) nuclear instrumentation and control technician, (3) nuclear materials processing technician, (4) nuclear quality-assurance/quality-control…

  4. Nuclear Technology Series. Course 5: Introduction to Nuclear Systems.

    ERIC Educational Resources Information Center

    Center for Occupational Research and Development, Inc., Waco, TX.

    This technical specialty course is one of thirty-five courses designed for use by two-year postsecondary institutions in five nuclear technician curriculum areas: (1) radiation protection technician, (2) nuclear instrumentation and control technician, (3) nuclear materials processing technician, (4) nuclear quality-assurance/quality-control…

  5. Nuclear Technology Series. Course 24: Nuclear Systems and Safety.

    ERIC Educational Resources Information Center

    Center for Occupational Research and Development, Inc., Waco, TX.

    This technical specialty course is one of thirty-five courses designed for use by two-year postsecondary institutions in five nuclear technician curriculum areas: (1) radiation protection technician, (2) nuclear instrumentation and control technician, (3) nuclear materials processing technician, (4) nuclear quality-assurance/quality-control…

  6. Small Business Grants at the National Cancer Institute and National Institutes of Health

    NASA Astrophysics Data System (ADS)

    Baker, Houston

    2002-10-01

    Ten Federal Agencies set aside 2.5% of their external research budget for US small businesses—mainly for technology research and development, including radiation sensor system developments. Five agencies also set aside another 0.15% for the Small Business Technology Transfer Program, which is intended to facilitate technology transfers from research laboratories to public use through small businesses. The second largest of these agencies is the Department of Health and Human Services, and almost all of its extramural research funds flow through the 28 Institutes and Centers of the National Institutes of Health. For information, instructions, and application forms, visit the NIH website's Omnibus Solicitation for SBIR and STTR applications. The National Cancer Institute is the largest NIH research unit and SBIR/STTR participant. NCI also issues SBIR and STTR Program Announcements of its own that feature details modified to better support its initiatives and objectives in cancer prevention, detection, diagnosis, treatment, and monitoring.

  7. Draft Transportation Institutional Plan

    SciTech Connect

    Not Available

    1985-09-01

    The Department of Energy recognizes that the success of its program to develop and implement a national system for nuclear waste management and disposal depends on broad-based public understanding and acceptance. While each program element has its particular sensitivity, the transportation of the waste may potentially affect the greatest number of people, and accordingly is highly visible and potentially issue-laden. Therefore, the Office of Civilian Radioactive Waste Management has developed this Transportation Institutional Plan to lay the foundation for interaction among all interested parties for the purpose of identifying and resolving issues of concern. The Plan is divided into four chapters. Chapter 1 provides bachground information and discusses the purpose of the Plan and the policy guidance for establishing the transportation system. Chapter 2 introduces the major participants who must interact to build both the system itself and the consensus philosophy that is essential for effective operations. Chapter 3 suggests mechanisms for interaction that will ensure wide participation in program planning and implementation. And, finally, Chapter 4 suggests a framework for managing and resolving the issues related to development and operation of the transportation system. A list of acronyms and a glossary are included for the reader's convenience. The Plan's appendices provide supporting material to assist the reader in understanding the roles of the involved institutions. 4 figs., 1 tab.

  8. Structure and sequence of the gene for the largest subunit of trypanosomal RNA polymerase III.

    PubMed Central

    Köck, J; Evers, R; Cornelissen, A W

    1988-01-01

    As the first step in the analysis of the transcription process in the African trypanosome, Trypanosoma brucei, we have started to characterise the trypanosomal RNA polymerases. We have previously described the gene encoding the largest subunit of RNA polymerase II and found that two almost identical RNA polymerase II genes are encoded within the genome of T. brucei. Here we present the identification, cloning and sequence analysis of the gene encoding the largest subunit of RNA polymerase III. This gene contains a single open reading frame encoding a polypeptide with a Mr of 170 kD. In total, eight encoding a polypeptide with a Mr of 170 kD. In total, eight highly conserved regions with significant homology to those previously reported in other eukaryotic RNA polymerase largest subunits were identified. Some of these domains contain functional sites, which are conserved among all eukaryotic largest subunit genes analysed thus far. Since these domains make up a large part of each polypeptide, independent of the RNA polymerase class, these data strongly support the hypothesis that these domains provide a major part of the transcription machinery of the RNA polymerase complex. The additional domains which are uniquely present in the largest subunit of RNA polymerase I and II, respectively, two large hydrophylic insertions and a C-terminal extension, might be a determining factor in specific transcription of the gene classes. Images PMID:3174432

  9. The Multivariate Largest Lyapunov Exponent as an Age-Related Metric of Quiet Standing Balance

    PubMed Central

    Liu, Kun; Wang, Hongrui; Xiao, Jinzhuang

    2015-01-01

    The largest Lyapunov exponent has been researched as a metric of the balance ability during human quiet standing. However, the sensitivity and accuracy of this measurement method are not good enough for clinical use. The present research proposes a metric of the human body's standing balance ability based on the multivariate largest Lyapunov exponent which can quantify the human standing balance. The dynamic multivariate time series of ankle, knee, and hip were measured by multiple electrical goniometers. Thirty-six normal people of different ages participated in the test. With acquired data, the multivariate largest Lyapunov exponent was calculated. Finally, the results of the proposed approach were analysed and compared with the traditional method, for which the largest Lyapunov exponent and power spectral density from the centre of pressure were also calculated. The following conclusions can be obtained. The multivariate largest Lyapunov exponent has a higher degree of differentiation in differentiating balance in eyes-closed conditions. The MLLE value reflects the overall coordination between multisegment movements. Individuals of different ages can be distinguished by their MLLE values. The standing stability of human is reduced with the increment of age. PMID:26064182

  10. Institutional Priority for Diversity at Christian Institutions

    ERIC Educational Resources Information Center

    Paredes-Collins, Kristin

    2009-01-01

    This evaluative study explored the relationship between institutional priority for diversity and minority enrollment at four schools within the Council for Christian Colleges and Universities, a consortium of Christian institutions. This institutional evaluation utilized public resources in order to gather descriptive data on minority enrollment…

  11. Economics of nuclear power.

    PubMed

    Rossin, A D; Rieck, T A

    1978-08-18

    With 12 percent of U.S. electricity now being supplied by nuclear power, Commonwealth Edison has found nuclear plants to be good investments relative to other base load energy sources. The country's largest user of nuclear power, Commonwealth Edison, estimates that its commitment to nuclear saved its customers about 10 percent on their electric bills in 1977, compared to the cost with the next best alternative, coal. This advantage is seen as continuing, contrary to criticisms of the economics and reliability of nuclear power and claims that it has hidden subsidies. It is concluded that there is a need for both nuclear and coal and that government policy precluding or restricting either would be unwise. PMID:17794111

  12. Institute Study Report

    NASA Technical Reports Server (NTRS)

    Whitaker, Ann; Steadman, Jackie; Little, Sally; Underwood, Debra; Blackman, Mack; Simonds, Judy

    1997-01-01

    This report documents a study conducted by the MSFC working group on Institutes in 1995 on the structure, organization and business arrangements of Institutes at a time when the agency was considering establishing science institutes. Thirteen institutes, ten science centers associated with the state of Georgia, Stanford Research Institute (SRI), and IIT Research Institute (IITRI), and general data on failed institutes were utilized to form this report. The report covers the working group's findings on institute mission, structure, director, board of directors/advisors, the working environment, research arrangements, intellectual property rights, business management, institute funding, and metrics.

  13. Western Nuclear Science Alliance

    SciTech Connect

    Steve Reese; George Miller; Stephen Frantz; Denis Beller; Denis Beller; Ed Morse; Melinda Krahenbuhl; Bob Flocchini; Jim Elliston

    2010-12-07

    The primary objective of the INIE program is to strengthen nuclear science and engineering programs at the member institutions and to address the long term goal of the University Reactor Infrastructure and Education Assistance Program.

  14. Celebrating the 65th anniversary of the Russian Federal Nuclear Center — All-Russian Research Institute of Experimental Physics (Scientific session of the Physical Sciences Division of the Russian Academy of Sciences, 6 October 2010)

    NASA Astrophysics Data System (ADS)

    2011-04-01

    A scientific session of the Physical Sciences Division of the Russian Academy of Sciences (RAS) took place on 6 October 2010 in the Conference Hall of the Lebedev Physical Institute, RAS (FIAN) on the occasion of the 65th anniversary of founding of the Russian Federal Nuclear Center — All-Russian Research Institute of Experimental Physics (RFNC-VNIIEF).The agenda of the session announced on the website www.gpad.ac.ru of the RAS Physical Sciences Division listed the following reports: (1) Ilkaev R I (RFNC-VNIIEF, Sarov, Nizhny Novgorod region). Opening remarks "On the fundamental physics research programs at RFNC-VNIIEF" (2) Mikhailov A L (RFNC-VNIIEF, Sarov, Nizhny Novgorod region) "Hydrodynamic instabilities in various media"; (3) Trunin R F (RFNC-VNIIEF, Sarov, Nizhny Novgorod region) "Study of extreme states of metals using shock waves"; (4) Ivanovskii A V (RFNC-VNIIEF, Sarov, Nizhny Novgorod region) "Explosive magnetic energy generators and their application in research"; (5) Podurets A M (RFNC-VNIIEF, Sarov, Nizhny Novgorod region) "X-ray studies of the structure of matter in shock waves"; (6) Garanin S G (RFNC-VNIIEF, Sarov, Nizhny Novgorod region) "High-power lasers in studies of the physics of hot, dense plasma and thermonuclear fusion"; (7) Selemir V D (RFNC-VNIIEF, Sarov, Nizhny Novgorod region) "Physics research in ultrahigh magnetic fields"; (8) Mkhitar'yan L S (RFNC-VNIIEF, Sarov, Nizhny Novgorod region) "Gasdynamic thermonuclear fusion."Articles based on reports 1-7 are published below. An extended version of report 3 written as a review paper will be published in a later issue of Physics-Uspekhi. • Fundamental physics research at the All-Russian Research Institute of Experimental Physics, R I Ilkaev Physics-Uspekhi, 2011, Volume 54, Number 4, Pages 387-392 • Hydrodynamic instabilities, A L Mikhailov, N V Nevmerzhitskii, V A Raevskii Physics-Uspekhi, 2011, Volume 54, Number 4, Pages 392-397 • Extreme states of metals: investigation using shock

  15. Astronomers Break Ground on Atacama Large Millimeter Array (ALMA) - World's Largest Millimeter Wavelength Telescope

    NASA Astrophysics Data System (ADS)

    2003-11-01

    Scientists and dignitaries from Europe, North America and Chile are breaking ground today (Thursday, November 6, 2003) on what will be the world's largest, most sensitive radio telescope operating at millimeter wavelengths . ALMA - the "Atacama Large Millimeter Array" - will be a single instrument composed of 64 high-precision antennas located in the II Region of Chile, in the District of San Pedro de Atacama, at the Chajnantor altiplano, 5,000 metres above sea level. ALMA 's primary function will be to observe and image with unprecedented clarity the enigmatic cold regions of the Universe, which are optically dark, yet shine brightly in the millimetre portion of the electromagnetic spectrum. The Atacama Large Millimeter Array (ALMA) is an international astronomy facility. ALMA is an equal partnership between Europe and North America, in cooperation with the Republic of Chile, and is funded in North America by the U.S. National Science Foundation (NSF) in cooperation with the National Research Council of Canada (NRC), and in Europe by the European Southern Observatory (ESO) and Spain. ALMA construction and operations are led on behalf of North America by the National Radio Astronomy Observatory (NRAO), which is managed by Associated Universities, Inc. (AUI), and on behalf of Europe by ESO. " ALMA will be a giant leap forward for our studies of this relatively little explored spectral window towards the Universe" , said Dr. Catherine Cesarsky , Director General of ESO. "With ESO leading the European part of this ambitious and forward-looking project, the impact of ALMA will be felt in wide circles on our continent. Together with our partners in North America and Chile, we are all looking forward to the truly outstanding opportunities that will be offered by ALMA , also to young scientists and engineers" . " The U.S. National Science Foundation joins today with our North American partner, Canada, and with the European Southern Observatory, Spain, and Chile to prepare

  16. Real-time measurements of the largest Lyapunov exponent in optical fields

    NASA Astrophysics Data System (ADS)

    Gavrylyak, M. S.; Maksimyak, P. P.

    2012-01-01

    An analog interference method for measuring the largest Lyapunov exponent in optical fields generated by scattering objects and mediums is proposed. The method is used to make a device for high-speed real time transverse correlation function optical fields measurement.

  17. Real-time measurements of the largest Lyapunov exponent in optical fields

    NASA Astrophysics Data System (ADS)

    Gavrylyak, M. S.; Maksimyak, P. P.

    2011-09-01

    An analog interference method for measuring the largest Lyapunov exponent in optical fields generated by scattering objects and mediums is proposed. The method is used to make a device for high-speed real time transverse correlation function optical fields measurement.

  18. Profile of a Woman Officer; Findings of a Study of Executives in America's 1300 Largest Companies.

    ERIC Educational Resources Information Center

    1978

    The typical woman officer from the nation's largest industrial, banking, retail and utility companies is married, at least 50 years of age, has had some college, was born into a family of low or lower middle class income, and has a work salary of less than $30,000. While the number of women officers in leading business organizations is small, the…

  19. The 2003 Music in Our School's Month and World's Largest Concert Teacher's Guide.

    ERIC Educational Resources Information Center

    Music Educators National Conference, Reston, VA.

    On March 13, 2003 millions of school children, teachers, and citizens from around the world participate simultaneously in the "World's Largest Concert" (WLC). This concert, a sing-along program, is broadcast on PBS and the Armed Forces Radio and Television Network overseas. Participating in the WLC is a way to celebrate Music in Our Schools Month.…

  20. NAFTA: The World's Largest Trading Zone Turns 20

    ERIC Educational Resources Information Center

    Ferrarini, Tawni Hunt; Day, Stephen

    2014-01-01

    Everyone under the age of 20 who has grown up in North America has lived in the common market created by NAFTA--the North American Free Trade Agreement. In a zone linking the United States, Canada, and Mexico, most goods and investments flow freely across borders to users, consumers, and investors. In 1994, NAFTA created the largest relatively…

  1. Assessment of the Relative Largest Earthquake Hazard Level in the NW Himalaya and its Adjacent Region

    NASA Astrophysics Data System (ADS)

    Tsapanos, Theodoros M.; Yadav, R. B. S.; Olasoglou, Efthalia M.; Singh, Mayshree

    2016-04-01

    In the present study, the level of the largest earthquake hazard is assessed in 28 seismic zones of the NW Himalaya and its vicinity, which is a highly seismically active region of the world. Gumbel's third asymptotic distribution (hereafter as GIII) is adopted for the evaluation of the largest earthquake magnitudes in these seismic zones. Instead of taking in account any type of Mmax, in the present study we consider the ω value which is the largest earthquake magnitude that a region can experience according to the GIII statistics. A function of the form Θ(ω, RP6.0) is providing in this way a relatively largest earthquake hazard scale defined by the letter K(K index). The return periods for the ω values (earthquake magnitudes) 6 or larger (RP6.0) are also calculated. According to this index, the investigated seismic zones are classified into five groups and it is shown that seismic zones 3 (Quetta of Pakistan), 11 (Hindukush), 15 (northern Pamirs), and 23 (Kangra, Himachal Pradesh of India) correspond to a "very high" K index which is 6.

  2. 78 FR 23624 - Determination and Certification Under the Foreign Assistance Act Relating to the Largest...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-04-19

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF STATE Determination and Certification Under the Foreign Assistance Act Relating to the Largest Exporting and Importing Countries of Certain Precursor Chemicals Pursuant to Section 490(b)(1)(A) of the Foreign Assistance Act...

  3. Phase space reconstruction and estimation of the largest Lyapunov exponent for gait kinematic data

    SciTech Connect

    Josiński, Henryk; Świtoński, Adam; Michalczuk, Agnieszka; Wojciechowski, Konrad

    2015-03-10

    The authors describe an example of application of nonlinear time series analysis directed at identifying the presence of deterministic chaos in human motion data by means of the largest Lyapunov exponent. The method was previously verified on the basis of a time series constructed from the numerical solutions of both the Lorenz and the Rössler nonlinear dynamical systems.

  4. Discovery of the Largest Orbweaving Spider Species: The Evolution of Gigantism in Nephila

    PubMed Central

    Kuntner, Matjaž; Coddington, Jonathan A.

    2009-01-01

    Background More than 41,000 spider species are known with about 400–500 added each year, but for some well-known groups, such as the giant golden orbweavers, Nephila, the last valid described species dates from the 19th century. Nephila are renowned for being the largest web-spinning spiders, making the largest orb webs, and are model organisms for the study of extreme sexual size dimorphism (SSD) and sexual biology. Here, we report on the discovery of a new, giant Nephila species from Africa and Madagascar, and review size evolution and SSD in Nephilidae. Methodology We formally describe N. komaci sp. nov., the largest web spinning species known, and place the species in phylogenetic context to reconstruct the evolution of mean size (via squared change parsimony). We then test female and male mean size correlation using phylogenetically independent contrasts, and simulate nephilid body size evolution using Monte Carlo statistics. Conclusions Nephila females increased in size almost monotonically to establish a mostly African clade of true giants. In contrast, Nephila male size is effectively decoupled and hovers around values roughly one fifth of female size. Although N. komaci females are the largest Nephila yet discovered, the males are also large and thus their SSD is not exceptional. PMID:19844575

  5. Coordinated observations using the world largest low-frequency radio telescopes and space misiions

    NASA Astrophysics Data System (ADS)

    Konovalenko, A. A.; Zarka, Ph.; Kolyadin, V. L.; Zakharenko, V. V.; Stepkin, S. V.; Panchenko, M.; Lecacheux, A.; Rucker, H. O.; Fischer, G.; Ulyanov, O. M.; Melnik, V. N.; Litvinenko, G. V.; Sidorchuk, M. A.; Bubnov, I. N.; Vasilyeva, Ya. Yu.; Bojko, A. I.; Shaposhnikov, V.; Mann, G.; Kalinichenko, N. N.; Falkovich, I. S.; Koval, A. A.; Mylostna, K.; Pylaev, O. S.; Shepelev, V. A.; Reznik, A. P.

    2013-09-01

    The positive possibilities of astrophysical objects studies(including the Solar system investigations) using coordinated observations with the largest existing and coming low frequency radio telescopes are shown. The observations of the Sun, Jupiter, Saturn, ant others with UTR-2, URAN, NDA radio telescopes, and WIND, Cassini and STEREO space missions at frequencies lower than 40 MHz have been carried out.

  6. Nuclear energy related research

    NASA Astrophysics Data System (ADS)

    Rintamaa, R.

    1992-05-01

    The annual Research Program Plan describes publicly funded nuclear energy related research to be carried out mainly at the Technical Research Center of Finland (VTT) in 1992. The research is financed primarily by the Ministry of Trade and Industry (KTM), the Finnish Center for Radiation and Nuclear Safety (STUK), and VTT itself. Other research institutes, utilities, and industry also contribute to many projects.

  7. Medical Expenditure for Chronic Diseases in Mexico: The Case of Selected Diagnoses Treated by the Largest Care Providers

    PubMed Central

    Figueroa-Lara, Alejandro; Gonzalez-Block, Miguel Angel; Alarcon-Irigoyen, Jose

    2016-01-01

    Background Chronic diseases (CD) are a public health emergency in Mexico. Despite concern regarding the financial burden of CDs in the country, economic studies have focused only on diabetes, hypertension, and cancer. Furthermore, these estimated financial burdens were based on hypothetical epidemiology models or ideal healthcare scenarios. The present study estimates the annual expenditure per patient and the financial burden for the nine most prevalent CDs, excluding cancer, for each of the two largest public health providers in the country: the Ministry of Health (MoH) and the Mexican Institute of Social Security (IMSS). Methods Using the Mexican National Health and Nutrition Survey 2012 (ENSANUT) as the main source of data, health services consumption related to CDs was obtained from patient reports. Unit costs for each provided health service (e.g. consultation, drugs, hospitalization) were obtained from official reports. Prevalence data was obtained from the published literature. Annual expenditure due to health services consumption was calculated by multiplying the quantity of services consumed by the unit cost of each health service. Results The most expensive CD in both health institutions was chronic kidney disease (CKD), with an annual unit cost for MoH per patient of US$ 8,966 while for IMSS the expenditure was US$ 9,091. Four CDs (CKD, arterial hypertension, type 2 diabetes, and chronic ischemic heart disease) accounted for 88% of the total CDs financial burden (US$ 1.42 billion) in MoH and 85% (US$ 3.96 billion) in IMSS. The financial burden of the nine CDs analyzed represents 8% and 25% of the total annual MoH and IMSS health expenditure, respectively. Conclusions/Significance The financial burden from the nine most prevalent CDs, excluding cancer, is already high in Mexico. This finding by itself argues for the need to improve health promotion and disease detection, diagnosis, and treatment to ensure CD primary and secondary prevention. If the

  8. Nuclear Proliferation Challenges

    SciTech Connect

    Professor William Potter

    2005-11-28

    William C. Potter, Director of the Center for Non Proliferation Studies and the Center for Russian and Eurasian Studies at the Monterey Institute of International Studies, will present nuclear proliferation challenges following the 2005 Nuclear Non-Proliferation Treaty (NPT) Review Conference. In addition to elucidating reasons for, and implications of, the conference’s failure, Dr. Potter will discuss common ground between nuclear proliferation and terrorism issues and whether corrective action can be taken.

  9. Enlarged Multilocus Data set Provides Surprisingly Younger Time of Origin for the Plethodontidae, the Largest Family of Salamanders.

    PubMed

    Shen, Xing-Xing; Liang, Dan; Chen, Meng-Yun; Mao, Rong-Li; Wake, David B; Zhang, Peng

    2016-01-01

    Deep phylogenetic relationships of the largest salamander family Plethodontidae have been difficult to resolve, probably reflecting a rapid diversification early in their evolutionary history. Here, data from 50 independent nuclear markers (total 48,582 bp) are used to reconstruct the phylogeny and divergence times for plethodontid salamanders, using both concatenation and coalescence-based species tree analyses. Our results robustly resolve the position of the enigmatic eastern North American four-toed salamander (Hemidactylium) as the sister taxon of Batrachoseps + Tribe Bolitoglossini, thus settling a long-standing question. Furthermore, we statistically reject sister taxon status of Karsenia and Hydromantes, the only plethodontids to occur outside the Americas, leading us to new biogeographic hypotheses. Contrary to previous long-standing arguments that plethodontid salamanders are an old lineage originating in the Cretaceous (more than 90 Ma), our analyses lead to the hypothesis that these salamanders are much younger, arising close to the K-T boundary (~66 Ma). These time estimates are highly stable using alternative calibration schemes and dating methods. Our data simulation highlights the potential risk of making strong arguments about phylogenetic timing based on inferences from a handful of nuclear genes, a common practice. Based on the newly obtained timetree and ancestral area reconstruction results, we argue that (i) the classic "Out of Appalachia" hypothesis of plethodontid origins is problematic; (ii) the common ancestor of extant plethodontids may have originated in northwestern North America in the early Paleocene; (iii) origins of Eurasian plethodontids likely result from two separate dispersal events from western North America via Beringia in the late Eocene (~42 Ma) and the early Miocene (~23 Ma), respectively. PMID:26385618

  10. THE BRIGHTEST CLUSTER GALAXY IN A85: THE LARGEST CORE KNOWN SO FAR

    SciTech Connect

    López-Cruz, O.; Añorve, C.; Ibarra-Medel, H. J.; Birkinshaw, M.; Worrall, D. M.; Barkhouse, W. A.; Torres-Papaqui, J. P.

    2014-11-10

    We have found that the brightest cluster galaxy (BCG) in A85, Holm 15A, displays the largest core known so far. Its cusp radius, r {sub γ} = 4.57 ± 0.06 kpc (4.''26 ± 0.''06), is more than 18 times larger than the mean for BCGs and ≳ 1 kpc larger than A2261-BCG, hitherto the largest-cored BCG. Holm 15A hosts the luminous amorphous radio source 0039-095B and has the optical signature of a LINER. Scaling laws indicate that this core could host a supermassive black hole (SMBH) of mass M {sub •} ∼ (10{sup 9}-10{sup 11}) M {sub ☉}. We suggest that cores this large represent a relatively short phase in the evolution of BCGs, whereas the masses of their associated SBMH might be set by initial conditions.

  11. A method for reducing the largest relative errors in Monte Carlo iterated-fission-source calculations

    SciTech Connect

    Hunter, J. L.; Sutton, T. M.

    2013-07-01

    In Monte Carlo iterated-fission-source calculations relative uncertainties on local tallies tend to be larger in lower-power regions and smaller in higher-power regions. Reducing the largest uncertainties to an acceptable level simply by running a larger number of neutron histories is often prohibitively expensive. The uniform fission site method has been developed to yield a more spatially-uniform distribution of relative uncertainties. This is accomplished by biasing the density of fission neutron source sites while not biasing the solution. The method is integrated into the source iteration process, and does not require any auxiliary forward or adjoint calculations. For a given amount of computational effort, the use of the method results in a reduction of the largest uncertainties relative to the standard algorithm. Two variants of the method have been implemented and tested. Both have been shown to be effective. (authors)

  12. Limiting statistics of the largest and smallest eigenvalues in the correlated Wishart model

    NASA Astrophysics Data System (ADS)

    Wirtz, Tim; Kieburg, Mario; Guhr, Thomas

    2015-01-01

    The correlated Wishart model provides a standard tool for the analysis of correlations in a rich variety of systems. Although much is known for complex correlation matrices, the empirically much more important real case still poses substantial challenges. We put forward a new approach, which maps arbitrary statistical quantities, depending on invariants only, to invariant Hermitian matrix models. For completeness we also include the quaternion case and deal with all three cases in a unified way. As an important application, we study the statistics of the largest eigenvalue and its limiting distributions in the correlated Wishart model, because they help to estimate the behavior of large complex systems. We show that even for fully correlated Wishart ensembles, the Tracy-Widom distribution can be the limiting distribution of the largest as well as the smallest eigenvalue, provided that a certain scaling of the empirical eigenvalues holds.

  13. Rapid Deposition Technology Holds the Key for the World's Largest Solar Manufacturer (Fact Sheet)

    SciTech Connect

    Not Available

    2010-10-01

    Thanks in part to years of collaboration with the National Renewable Energy Laboratory (NREL), a manufacturer of thin-film solar modules has grown from a small garage-type operation to become the world's largest manufacturer of solar modules. First Solar, Inc. now manufactures cadmium telluride (CdTe) solar modules throughout the world, but it began in Ohio as a small company called Solar Cells, Inc.

  14. CV population densities: Using CFHT as the worlds largest time-series photometer

    NASA Astrophysics Data System (ADS)

    Lott, D. A.; Haswell, C. A.; Abbott, T. M. C.; Ringwald, F.

    2002-01-01

    Known samples of cataclysmic variables (CVs) are sparse and/or rife with selection effects and do not provide adequate tests of theories of their evolution. We have used the CFHT12k mosaic camera as the worlds largest time-series photometer, observing a 0.3 sq.deg. Galactic field with 3 minute time-resolution. The resulting unbiased, magnitude-limited sample of CVs, and their progenitors will be used to test the predictions of CV population models.

  15. Hospital Prices Increase in California, Especially Among Hospitals in the Largest Multi-hospital Systems.

    PubMed

    Melnick, Glenn A; Fonkych, Katya

    2016-01-01

    A surge in hospital consolidation is fueling formation of ever larger multi-hospital systems throughout the United States. This article examines hospital prices in California over time with a focus on hospitals in the largest multi-hospital systems. Our data show that hospital prices in California grew substantially (+76% per hospital admission) across all hospitals and all services between 2004 and 2013 and that prices at hospitals that are members of the largest, multi-hospital systems grew substantially more (113%) than prices paid to all other California hospitals (70%). Prices were similar in both groups at the start of the period (approximately $9200 per admission). By the end of the period, prices at hospitals in the largest systems exceeded prices at other California hospitals by almost $4000 per patient admission. Our study findings are potentially useful to policy makers across the country for several reasons. Our data measure actual prices for a large sample of hospitals over a long period of time in California. California experienced its wave of consolidation much earlier than the rest of the country and as such our findings may provide some insights into what may happen across the United States from hospital consolidation including growth of large, multi-hospital systems now forming in the rest of the rest of the country. PMID:27284126

  16. Lobbying Behaviors of Higher Education Institutions: Structures, Attempts, and Success

    ERIC Educational Resources Information Center

    Burgess, Brent; Miller, Michael T.

    2009-01-01

    As colleges and universities are under increased pressure to demonstrate their effectiveness, leaders have come to rely on government relations personnel to adequately tell the story of the activities and needs of the campus. State governments typically are the largest single supplier of public institution funding, yet they have been challenged by…

  17. Development of Curricula for Nuclear Radiation Protection, Nuclear Instrumentation, and Nuclear Materials Processing Technologies. Final Report.

    ERIC Educational Resources Information Center

    Hull, Daniel M.

    A study was conducted to assist two-year postsecondary educational institutions in providing technical specialty courses for preparing nuclear technicians. As a result of project activities, curricula have been developed for five categories of nuclear technicians and operators: (1) radiation protection technician, (2) nuclear instrumentation and…

  18. CPTAC Releases Largest-Ever Breast Cancer Proteome Dataset - Office of Cancer Clinical Proteomics Research

    Cancer.gov

    National Cancer Institute (NCI) Clinical Proteomic Tumor Analysis Consortium (CPTAC) scientists have released a dataset of proteins and phophorylated phosphopeptides identified through deep proteomic and phosphoproteomic analysis of breast tumor samples, previously genomically analyzed by The Cancer Genome Atlas (TCGA).

  19. National Institutes of Health

    MedlinePlus

    ... Stem Cell Information OppNet NIDB NIH Blueprint for Neuroscience Research Institutes at NIH List of Institutes, Centers & ... be prevented. Pneumonia Causes, symptoms, diagnosis and treatments. Learning Disabilities Early interventions offer help with learning problems. ...

  20. Swimmer-Training Institutions

    ERIC Educational Resources Information Center

    O'Donnell, R. W.

    1972-01-01

    This satirical essay proposes an institution of higher learning that would prepare students to become swimmers" and swimming instructors. Curriculum, teaching methods, student selection and evaluation are modelled on certain contemporary teacher-training institutes. (PD)

  1. Texas Heart Institute

    MedlinePlus

    ... Join us! James T. Willerson MD Cardiovascular Seminar Texas Heart Institute Journal Scientific Publications Library & Learning Resources ... Education 12th Annual Diabetes Symposium September 17, 2016 Texas Heart Institute Program Director: Mandeep Bajaj, MD Clinical ...

  2. Canadian institute honours Hawking

    NASA Astrophysics Data System (ADS)

    Durrani, Matin

    2009-11-01

    The Perimeter Institute for Theoretical Physics in Waterloo, Canada, has announced that a major new extension to its campus will be known as the Stephen Hawking Centre. The extension, which is currently being built, is due to open in 2011 and will double the size of the institute. It will also provide a home for the institute's Masters students, the first of whom joined the Perimeter Institute this autumn as part of its Perimeter Scholars international programme.

  3. Analysis of the largest tandemly repeated DNA families in the human genome

    PubMed Central

    Warburton, Peter E; Hasson, Dan; Guillem, Flavia; Lescale, Chloe; Jin, Xiaoping; Abrusan, Gyorgy

    2008-01-01

    Background Tandemly Repeated DNA represents a large portion of the human genome, and accounts for a significant amount of copy number variation. Here we present a genome wide analysis of the largest tandem repeats found in the human genome sequence. Results Using Tandem Repeats Finder (TRF), tandem repeat arrays greater than 10 kb in total size were identified, and classified into simple sequence e.g. GAATG, classical satellites e.g. alpha satellite DNA, and locus specific VNTR arrays. Analysis of these large sequenced regions revealed that several "simple sequence" arrays actually showed complex domain and/or higher order repeat organization. Using additional methods, we further identified a total of 96 additional arrays with tandem repeat units greater than 2 kb (the detection limit of TRF), 53 of which contained genes or repeated exons. The overall size of an array of tandem 12 kb repeats which spanned a gap on chromosome 8 was found to be 600 kb to 1.7 Mbp in size, representing one of the largest non-centromeric arrays characterized. Several novel megasatellite tandem DNA families were observed that are characterized by repeating patterns of interspersed transposable elements that have expanded presumably by unequal crossing over. One of these families is found on 11 different chromosomes in >25 arrays, and represents one of the largest most widespread megasatellite DNA families. Conclusion This study represents the most comprehensive genome wide analysis of large tandem repeats in the human genome, and will serve as an important resource towards understanding the organization and copy number variation of these complex DNA families. PMID:18992157

  4. Astronomical Institute of Athens

    NASA Astrophysics Data System (ADS)

    Murdin, P.

    2000-11-01

    The Astronomical Institute of Athens is the oldest research institute of modern Greece (it faces the Parthenon). The Astronomical Institute (AI) of the National Observatory of Athens (NOA) started its observational projects in 1847. The modern computer and research center are housed at the Penteli Astronomical Station with major projects and international collaborations focused on extragalactic ...

  5. Mesophotic fishes of the Abrolhos Shelf, the largest reef ecosystem in the South Atlantic.

    PubMed

    Simon, T; Pinheiro, H T; Moura, R L; Carvalho-Filho, A; Rocha, L A; Martins, A S; Mazzei, E; Francini-Filho, R B; Amado-Filho, G M; Joyeux, J-C

    2016-07-01

    Fishes inhabiting rhodolith beds and reefs at mesophotic depths on the Abrolhos Shelf, which encompasses the largest and richest coral reef formation in the South Atlantic Ocean, were assessed through technical diving and remotely operated vehicles (ROVs). A total of 74 fish species were recorded, including at least one new species, one new record for the south-western Atlantic and six new records for the Abrolhos region. Overfishing, mining and port activities are already threatening many endangered and commercially important species recorded on the mesophotic reefs of Abrolhos Shelf, and the establishment of marine protected areas and off-reserve fisheries regulations are urgently needed. PMID:27094882

  6. An unusual symbiont from the gut of surgeonfishes may be the largest known prokaryote.

    PubMed Central

    Clements, K D; Bullivant, S

    1991-01-01

    Symbionts first reported from the gut of a Red Sea surgeonfish, Acanthurus nigrofuscus (family Acanthuridae), were subsequently described as Epulopiscium fishelsoni. The taxonomic position of this very large (up to 576 microns in length) microorganism has previously been designated in the literature as either uncertain or eukaryotic. We suggest that similar symbionts from Great Barrier Reef surgeonfish may be prokaryotes, which together with E. fishelsoni from the Red Sea may represent the largest known forms of this cell type. Features identifying the symbionts as prokaryotes include the presence of bacterial-type flagella and a bacterial nucleoid and the absence of a nucleus or any other membrane-bound organelle. Images PMID:1885516

  7. Cluster-Void Degeneracy Breaking: Dark Energy, Planck, and the Largest Cluster and Void

    NASA Astrophysics Data System (ADS)

    Sahlén, Martin; Zubeldía, Íñigo; Silk, Joseph

    2016-03-01

    Combining galaxy cluster and void abundances breaks the degeneracy between mean matter density {{{Ω }}}{{m}} and power-spectrum normalization {σ }8. For the first time for voids, we constrain {{{Ω }}}{{m}}=0.21+/- 0.10 and {σ }8=0.95+/- 0.21 for a flat Λ CDM universe, using extreme-value statistics on the claimed largest cluster and void. The Planck-consistent results detect dark energy with two objects, independently of other dark energy probes. Cluster-void studies are also complementary in scale, density, and nonlinearity, and are of particular interest for testing modified-gravity models.

  8. THE MASS OF (4) VESTA DERIVED FROM ITS LARGEST GRAVITATIONAL EFFECTS

    SciTech Connect

    Kuzmanoski, Mike; Novakovic, Bojan; Apostolovska, Gordana E-mail: bojan@matf.bg.ac.r

    2010-09-15

    In this paper, we present a recalculated value of the mass of (4) Vesta, derived from its largest gravitational perturbations on selected asteroids during their mutual close encounters. This was done by using a new method for mass determination, which is based on the linking of pre-encounter observations to the orbit determined from post-encounter ones. The estimated weighted mean of the mass of (4) Vesta is (1.300 {+-} 0.001) x 10{sup -10} M{sub sun}.

  9. Venezuelan projects advance to develop world`s largest heavy oil reserves

    SciTech Connect

    Croft, G.; Stauffer, K.

    1996-07-08

    A number of joint venture projects at varying stages of progress promise to greatly increase Venezuela`s production of extra heavy oil. Units of Conoco, Chevron, Total, Arco, and Mobil have either signed agreements or are pursuing negotiations with affiliates of state-owned Petroleos de Venezuela SA on the development of huge reserves of 8--10{degree} gravity crude. Large heavy oil resources are present in the oil producing areas of eastern and western Venezuela, and the largest are in eastern Venezuela`s Orinoco heavy oil belt. The paper discusses the Orinoco heavy oil belt geology and several joint ventures being implemented.

  10. Mitochondrial genome of Micrura bella (Nemertea: Heteronemertea), the largest mitochondrial genome known to phylum Nemertea.

    PubMed

    Shen, Chunyang; Shi-Chun, Sun

    2016-07-01

    The complete mitochondrial genome (mitogenome) of Micrura bella was sequenced and analyzed. Being the largest mitogenome known to phylum Nemertea, the genome is 16 847 bp in length. It encodes 37 genes typical to metazoan mitogenomes and has the same gene arrangement with the other Heteronemertea mitogenomes sequenced to date. The genome has the maximal number of non-coding nucleotides (2037 bp at 25 sites) in Nemertea mitogenomes, among which two large non-coding regions were found (507 and 508 bp, respectively). PMID:26155969

  11. Management of National Nuclear Power Programs for assured safety

    SciTech Connect

    Connolly, T.J.

    1985-01-01

    Topics discussed in this report include: nuclear utility organization; before the Florida Public Service Commission in re: St. Lucie Unit No. 2 cost recovery; nuclear reliability improvement and safety operations; nuclear utility management; training of nuclear facility personnel; US experience in key areas of nuclear safety; the US Nuclear Regulatory Commission - function and process; regulatory considerations of the risk of nuclear power plants; overview of the processes of reliability and risk management; management significance of risk analysis; international and domestic institutional issues for peaceful nuclear uses; the role of the Institute of Nuclear Power Operations (INPO); and nuclear safety activities of the International Atomic Energy Agency (IAEA).

  12. Evaluation of nonlinear properties of epileptic activity using largest Lyapunov exponent

    NASA Astrophysics Data System (ADS)

    Medvedeva, Tatiana M.; Lüttjohann, Annika; van Luijtelaar, Gilles; Sysoev, Ilya V.

    2016-04-01

    Absence seizures are known to be highly non-linear large amplitude oscillations with a well pronounced main time scale. Whilst the appearance of the main frequency is usually considered as a transition from noisy complex dynamics of baseline EEG to more regular absence activity, the dynamical properties of this type of epileptiformic activity in genetic absence models was not studied precisely. Here, the estimation of the largest Lyapunov exponent from intracranial EEGs of 10 WAG/Rij rats (genetic model of absence epilepsy) was performed. Fragments of 10 seizures and 10 episodes of on-going EEG each of 4 s length were used for each animal, 3 cortical and 2 thalamic channels were analysed. The method adapted for short noisy data was implemented. The positive values of the largest Lyapunov exponent were found as for baseline as for spike wave discharges (SWDs), with values for SWDs being significantly less than for on-going activity. Current findings may indicate that SWD is a chaotic process with a well pronounced main timescale rather than a periodic regime. Also, the absence activity was shown to be less chaotic than the baseline one.

  13. Public health preparedness for the world's largest mass gathering: 2010 World Exposition in Shanghai, China.

    PubMed

    Yi, He; Zheng'an, Yuan; Fan, Wu; Xiang, Guo; Chen, Dong; Yongchao, He; Xiaodong, Sun; Hao, Pan; Mahany, Mollie; Keim, Mark

    2012-12-01

    The 2010 World Exposition in Shanghai China (Expo) was the largest mass gathering in world history, attracting a record 72 million visitors. More than 190 countries participated in the Expo, along with more than 50 international organizations. The 2010 Expo was six months in duration (May 1 through October 30, 2010), and the size of the venue site comprised 5.28 square kilometers. Great challenges were imposed on the public health system in Shanghai due to the high number and density of visitors, long duration of the event, and other risk factors such as high temperatures, typhoon, etc. As the major metropolitan public health agency in Shanghai, the Shanghai Municipal Center for Disease Control and Prevention (SCDC) implemented a series of actions in preparing for, and responding to, the potential health impact of the world's largest mass gathering to date, which included partnerships for capacity building, enhancement of internal organizational structure, risk assessment, strengthened surveillance, disaster planning and exercises, laboratory management, vaccination campaign, health education, health intervention, risk communication and mass media surveillance, and technical support for health inspection. The clear-cut organizational structures and job responsibilities, as well as comprehensive operational and scientific preparations, were key elements to ensure the success of the 2010 World Exposition. PMID:22995587

  14. Metagenomic Characterisation of the Viral Community of Lough Neagh, the Largest Freshwater Lake in Ireland

    PubMed Central

    Skvortsov, Timofey; de Leeuwe, Colin; Quinn, John P.; McGrath, John W.; Allen, Christopher C. R.; McElarney, Yvonne; Watson, Catherine; Arkhipova, Ksenia; Lavigne, Rob; Kulakov, Leonid A.

    2016-01-01

    Lough Neagh is the largest and the most economically important lake in Ireland. It is also one of the most nutrient rich amongst the world’s major lakes. In this study, 16S rRNA analysis of total metagenomic DNA from the water column of Lough Neagh has revealed a high proportion of Cyanobacteria and low levels of Actinobacteria, Acidobacteria, Chloroflexi, and Firmicutes. The planktonic virome of Lough Neagh has been sequenced and 2,298,791 2×300 bp Illumina reads analysed. Comparison with previously characterised lakes demonstrates that the Lough Neagh viral community has the highest level of sequence diversity. Only about 15% of reads had homologs in the RefSeq database and tailed bacteriophages (Caudovirales) were identified as a major grouping. Within the Caudovirales, the Podoviridae and Siphoviridae were the two most dominant families (34.3% and 32.8% of the reads with sequence homology to the RefSeq database), while ssDNA bacteriophages constituted less than 1% of the virome. Putative cyanophages were found to be abundant. 66,450 viral contigs were assembled with the largest one being 58,805 bp; its existence, and that of another 34,467 bp contig, in the water column was confirmed. Analysis of the contigs confirmed the high abundance of cyanophages in the water column. PMID:26927795

  15. Sequencing of tsunami waves: Why the first wave is not always the largest

    NASA Astrophysics Data System (ADS)

    Okal, Emile; Synolakis, Costas

    2015-04-01

    In many instances, the largest wave to hit a coastline during a tsunami is not the first one. Classical examples include the arrivals of the 1960 Chilean tsunami in Hilo, Hawaii, and of the 1964 Alaskan tsunami in Crescent City, California, where most casualties took place during later arrivals. This situation can be socially treacherous, since residents and civil defense authorities are led to believe that the worst is over after a first, relatively mild arrival, and to give an early "all clear" before the true largest wave, as was the case in Papeete, Tahiti during the 2011 Tohoku tsunami. We research this problem by using a number of simple models for which analytical solutions are available, as well as more realistic simulations of the large earthquake tsunamis of the past decade, and compare their results to a catalog of waveforms obtained at DART buoys spread over the Pacific Basin. Preliminary results indicate a transition from a regime of Maximum First Wave to one of Delayed Maximum when distance is increased, azimuth to receiver is moved away from the normal to fault strike, and/or source size is reduced.

  16. Constraining gravity at the largest scales through CMB lensing and galaxy velocities

    NASA Astrophysics Data System (ADS)

    Pullen, Anthony R.; Alam, Shadab; He, Siyu; Ho, Shirley

    2016-08-01

    We demonstrate a new method to constrain gravity on the largest cosmological scales by combining measurements of cosmic microwave background (CMB) lensing and the galaxy velocity field. EG is a statistic, constructed from a gravitational lensing tracer and a measure of velocities such as redshift-space distortions (RSD), that can discriminate between gravity models while being independent of clustering bias and σ8. While traditionally, the lensing field for EG has been probed through galaxy lensing, CMB lensing has been proposed as a more robust tracer of the lensing field for EG at higher redshifts while avoiding intrinsic alignments. We perform the largest-scale measurement of EG ever, up to 150 Mpc h-1, by cross-correlating the Planck CMB lensing map with the Sloan Digital Sky Survey III (SDSS-III) CMASS galaxy sample and combining this with our measurement of the CMASS auto-power spectrum and the RSD parameter β. We report EG(z = 0.57) = 0.243 ± 0.060 (stat) ± 0.013 (sys), a measurement in tension with the general relativity (GR) prediction at a level of 2.6σ. Note that our EG measurement deviates from GR only at scales greater than 80 Mpc h-1, scales which have not been probed by previous EG tests. Upcoming surveys, which will provide an order-of-magnitude reduction in statistical errors, can significantly constrain alternative gravity models when combined with better control of systematics.

  17. Metagenomic Characterisation of the Viral Community of Lough Neagh, the Largest Freshwater Lake in Ireland.

    PubMed

    Skvortsov, Timofey; de Leeuwe, Colin; Quinn, John P; McGrath, John W; Allen, Christopher C R; McElarney, Yvonne; Watson, Catherine; Arkhipova, Ksenia; Lavigne, Rob; Kulakov, Leonid A

    2016-01-01

    Lough Neagh is the largest and the most economically important lake in Ireland. It is also one of the most nutrient rich amongst the world's major lakes. In this study, 16S rRNA analysis of total metagenomic DNA from the water column of Lough Neagh has revealed a high proportion of Cyanobacteria and low levels of Actinobacteria, Acidobacteria, Chloroflexi, and Firmicutes. The planktonic virome of Lough Neagh has been sequenced and 2,298,791 2×300 bp Illumina reads analysed. Comparison with previously characterised lakes demonstrates that the Lough Neagh viral community has the highest level of sequence diversity. Only about 15% of reads had homologs in the RefSeq database and tailed bacteriophages (Caudovirales) were identified as a major grouping. Within the Caudovirales, the Podoviridae and Siphoviridae were the two most dominant families (34.3% and 32.8% of the reads with sequence homology to the RefSeq database), while ssDNA bacteriophages constituted less than 1% of the virome. Putative cyanophages were found to be abundant. 66,450 viral contigs were assembled with the largest one being 58,805 bp; its existence, and that of another 34,467 bp contig, in the water column was confirmed. Analysis of the contigs confirmed the high abundance of cyanophages in the water column. PMID:26927795

  18. Approximating natural connectivity of scale-free networks based on largest eigenvalue

    NASA Astrophysics Data System (ADS)

    Tan, S.-Y.; Wu, J.; Li, M.-J.; Lu, X.

    2016-06-01

    It has been recently proposed that natural connectivity can be used to efficiently characterize the robustness of complex networks. The natural connectivity has an intuitive physical meaning and a simple mathematical formulation, which corresponds to an average eigenvalue calculated from the graph spectrum. However, as a network model close to the real-world system that widely exists, the scale-free network is found difficult to obtain its spectrum analytically. In this article, we investigate the approximation of natural connectivity based on the largest eigenvalue in both random and correlated scale-free networks. It is demonstrated that the natural connectivity of scale-free networks can be dominated by the largest eigenvalue, which can be expressed asymptotically and analytically to approximate natural connectivity with small errors. Then we show that the natural connectivity of random scale-free networks increases linearly with the average degree given the scaling exponent and decreases monotonically with the scaling exponent given the average degree. Moreover, it is found that, given the degree distribution, the more assortative a scale-free network is, the more robust it is. Experiments in real networks validate our methods and results.

  19. Nuclear Science Division: 1993 Annual report

    SciTech Connect

    Myers, W.D.

    1994-06-01

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

  20. Nuclear Technology Series. Course 30: Mechanical Inspection.

    ERIC Educational Resources Information Center

    Center for Occupational Research and Development, Inc., Waco, TX.

    This technical specialty course is one of thirty-five courses designed for use by two-year postsecondary institutions in five nuclear technician curriculum areas: (1) radiation protection technician, (2) nuclear instrumentation and control technician, (3) nuclear materials processing technician, (4) nuclear quality-assurance/quality-control…

  1. Nuclear Technology Series. Course 7: Reactor Operations.

    ERIC Educational Resources Information Center

    Center for Occupational Research and Development, Inc., Waco, TX.

    This technical specialty course is one of thirty-five courses designed for use by two-year postsecondary institutions in five nuclear technician curriculum areas: (1) radiation protection technician, (2) nuclear instrumentation and control technician, (3) nuclear materials processing technician, (4) nuclear quality-assurance/quality-control…

  2. Nuclear Technology Series. Course 28: Welding Inspection.

    ERIC Educational Resources Information Center

    Center for Occupational Research and Development, Inc., Waco, TX.

    This technical specialty course is one of thirty-five courses designed for use by two-year postsecondary institutions in five nuclear technician curriculum areas: (1) radiation protection technician, (2) nuclear instrumentation and control technician, (3) nuclear materials processing technician, (4) nuclear quality-assurance/quality-control…

  3. Nuclear Technology Series. Course 19: Radiation Shielding.

    ERIC Educational Resources Information Center

    Center for Occupational Research and Development, Inc., Waco, TX.

    This technical specialty course is one of thirty-five courses designed for use by two-year postsecondary institutions in five nuclear technician curriculum areas: (1) radiation protection technician, (2) nuclear instrumentation and control technician, (3) nuclear materials processing technician, (4) nuclear quality-assurance/quality-control…

  4. Nuclear Technology Series. Course 27: Metrology.

    ERIC Educational Resources Information Center

    Center for Occupational Research and Development, Inc., Waco, TX.

    This technical specialty course is one of thirty-five courses designed for use by two-year postsecondary institutions in five nuclear technician curriculum areas: (1) radiation protection technician, (2) nuclear instrumentation and control technician, (3) nuclear materials processing technician, (4) nuclear quality-assurance/quality-control…

  5. Nuclear Technology Series. Course 12: Reactor Physics.

    ERIC Educational Resources Information Center

    Center for Occupational Research and Development, Inc., Waco, TX.

    This technical specialty course is one of thirty-five courses designed for use by two-year postsecondary institutions in five nuclear technician curriculum areas: (1) radiation protection technician, (2) nuclear instrumentation and control technician, (3) nuclear materials processing technician, (4) nuclear quality-assurance/quality-control…

  6. Nuclear Technology Series. Course 18: Radiological Emergencies.

    ERIC Educational Resources Information Center

    Center for Occupational Research and Development, Inc., Waco, TX.

    This technical specialty course is one of thirty-five courses designed for use by two-year postsecondary institutions in five nuclear technician curriculum areas: (1) radiation protection technician, (2) nuclear instrumentation and control technician, (3) nuclear materials processing technician, (4) nuclear quality-assurance/quality-control…

  7. Nuclear Technology Series. Course l: Radiation Physics.

    ERIC Educational Resources Information Center

    Technical Education Research Center, Waco, TX.

    This technical specialty course is one of thirty-five courses designed for use by two-year postsecondary institutions in five nuclear technician curriculum areas: (1) radiation protection technician, (2) nuclear instrumentation and control technician, (3) nuclear materials processing technician, (4) nuclear quality-assurance/quality-control…

  8. Educating American youth on nuclear technology

    SciTech Connect

    Hechanova, T.E.

    1993-12-31

    A grave problem facing the American nuclear technology field is the non-education of American youth in nuclear sciences which produces an uneducated populace. This presentation addresses first hand efforts of the Massachusetts Institute of Technology`s ANS Student Branch at educating mainly high school students in nuclear science, and recruiting college students into the Nuclear Engineering Department.

  9. Mapping Hispanic-Serving Institutions: A Typology of Institutional Diversity

    ERIC Educational Resources Information Center

    Núñez, Anne-Marie; Crisp, Gloria; Elizondo, Diane

    2016-01-01

    Hispanic-Serving Institutions (HSIs), institutions that enroll at least 25% Hispanic students, are institutionally diverse, including a much wider array of institutional types than other Minority-Serving Institutions (MSIs). Furthermore, they have distinctive institutional characteristics from those typically emphasized in institutional typologies…

  10. Rapid Deposition Technology Holds the Key for the World's Largest Manufacturer of Thin-Film Solar Modules (Fact Sheet)

    SciTech Connect

    Not Available

    2013-08-01

    First Solar, Inc. has been collaborating with NREL since 1991, advancing its thin-film cadmium telluride solar technology to grow from a startup company to become one of the world's largest manufacturers of solar modules, and the world's largest manufacturer of thin-film solar modules.