Science.gov

Sample records for experiments present status

  1. The Majorana Double Beta Decay Experiment: Present Status

    SciTech Connect

    Aguayo, Estanislao; Avignone, Frank T.; Back, Henning O.; Barabash, Alexander S.; Beene, Jim; Bergevin, M.; Bertrand, F.; Boswell, M.; Brudanin, V.; Busch, Matthew; Chan, Yuen-Dat; Christofferson, C. D.; Collar, J. I.; Combs, Dustin C.; Cooper, R. J.; Detwiler, Jason A.; Doe, Peter J.; Efremenko, Yuri; Egorov, Viatcheslav; Ejiri, H.; Elliott, S. R.; Esterline, James H.; Fast, James E.; Fields, N.; Finnerty, P.; Fraenkle, Florian; Gehman, Victor M.; Giovanetti, G. K.; Green, M. P.; Guiseppe, V. E.; Gusey, K.; Hallin, A. L.; Hazama, R.; Henning, Reyco; Hime, Andrew; Hoppe, Eric W.; Horton, Mark; Howard, Stanley; Howe, M. A.; Johnson, R. A.; Keeter, K.; Keller, C.; Kidd, M. F.; Knecht, A.; Kochetov, Oleg; Konovalov, S.; Kouzes, Richard T.; Laferriere, Brian D.; LaRoque, B. H.; Leon, Jonathan D.; Leviner, L.; Loach, J. C.; MacMullin, S.; Marino, Michael G.; Martin, R. D.; Mei, Dong-Ming; Merriman, Jason H.; Miller, M. L.; Mizouni, Leila; Nomachi, Masaharu; Orrell, John L.; Overman, Nicole R.; Phillips II, D. G.; Poon, Alan; Perumpilly, Gopakumar; Prior, Gersende; Radford, D. C.; Rielage, Keith; Robertson, R. G. H.; Ronquest, M. C.; Schubert, Alexis G.; Shima, T.; Shirchenko, M.; Snavely, Kyle J.; Steele, David; Strain, J.; Thomas, K.; Timkin, V.; Tornow, W.; Vanyushin, I.; Varner, R. L.; Vetter, Kai; Vorren, Kris R.; Wilkerson, J. F.; Yakushev, E.; Young, A.; Yu, Chang-Hong; Yumatov, Vladimir; Zhang, C.

    2013-06-01

    The Majorana collaboration is actively pursuing research and development aimed at a tonne-scale 76Ge neutrinoless double-beta decay experiment, an R&D effort that will field approximately 40 kg of germanium detectors with mixed enrichment levels. This article provides a status update on the construction of the Demonstrator

  2. Present status of the MISTRAL mass measurement experiment

    SciTech Connect

    Monsanglant, C.; Audi, G.; Doubre, H.; Duma, M.; Jacotin, M.; Kepinski, J.-F.; Le Scornet, G.; Saint Simon, M. de; Thibault, C.; Borcea, C.; Lebee, G.; Lunney, M. D.; Toader, C.

    1998-10-26

    The MISTRAL experiment for measuring masses of very short-lived nuclides at ISOLDE has been installed during the summer of 1997 and has had its first radioactive beam in November 1997. Tests are presently been carried out to study all possible systematic effects. This paper recalls the basic principles of the Smith-type radio-frequency spectrometer, gives its present characteristics and limitations, and describes the methods used to improve its performances.

  3. Present Status and Future Perspectives of the NEXT Experiment

    DOE PAGES

    Gómez Cadenas, J. J.; Álvarez, V.; Borges, F. I. G.; ...

    2014-01-01

    NEXT is an experiment dedicated to neutrinoless double beta decay searches in xenon. The detector is a TPC, holding 100 kg of high-pressure xenon enriched in the136Xe isotope. It is under construction in the Laboratorio Subterráneo de Canfranc in Spain, and it will begin operations in 2015. The NEXT detector concept provides an energy resolutionbetter than 1% FWHM and a topological signal that can be used to reduce the background. Furthermore, the NEXT technology can be extrapolated to a 1 ton-scale experiment.

  4. The DarkSide experiment: Present status and future

    DOE PAGES

    Zuzel, G.; Agnes, P.; Albuquerque, I. F. M.; ...

    2017-01-01

    Here, DarkSide is a multi-stage program devoted to direct searches of Dark Matter particles with detectors based on double phase liquid Argon Time Projection Chamber. The DarkSide-50 setup is running underground at the Laboratori Nazionali del Gran Sasso. First it was operated with Atmospheric Argon and during that run (1422 ± 67) kg×d of truly background-free exposure has been accumulated. Obtained data made it possible to set a 90% C.L. upper limit on the WIMP-nucleon cross section of 6.1 × 10–44 cm2 (for a WIMP mass of 100 GeV/c2). Presently the detector is filled with Underground Argon, which is depletedmore » in 39Ar by a factor of (1.4 ± 0.2)×103 with respect to Atmospheric Argon. Acquired so far (2616 ± 43) kg×d (71 live days) in combination with the data from the Atmospheric Argon run give us the 90% C.L. upper limit on the WIMP-nucleon spin-independent cross section of 2.0×10–44 cm2 for a WIMP mass of 100 GeV/c2. Up to date this is the best limit obtained with an argon target.« less

  5. The DarkSide experiment: Present status and future

    SciTech Connect

    Zuzel, G.; Agnes, P.; Albuquerque, I. F. M.; Alexander, T.; Alton, A. K.; Asner, D. M.; Back, H. O.; Baldin, B.; Biery, K.; Bocci, V.; Bonfini, G.; Bonivento, W.; Bossa, M.; Bottino, B.; Brigatti, A.; Brodsky, J.; Budano, F.; Bussino, S.; Cadeddu, M.; Cadonati, L.; Cadoni, M.; Calaprice, F.; Canci, N.; Candela, A.; Caravati, M.; Cariello, M.; Carlini, M.; Catalanotti, S.; Cavalcante, P.; Chepurnov, A.; Cicalò, C.; Cocco, A. G.; Covone, G.; D’Angelo, D.; D’Incecco, M.; Davini, S.; De Cecco, S.; De Deo, M.; De Vincenzi, M.; Derbin, A.; Devoto, A.; Eusanio, F. Di; Pietro, G. Di; Dionisi, C.; Edkins, E.; Empl, A.; Fan, A.; Fiorillo, G.; Fomenko, K.; Forster, G.; Franco, D.; Gabriele, F.; Galbiati, C.; Giagu, S.; Giganti, C.; Giovanetti, G. K.; Goretti, A. M.; Granato, F.; Grandi, L.; Gromov, M.; Guan, M.; Guardincerri, Y.; Hackett, B. R.; Herner, K.; Hughes, D.; Humble, P.; Hungerford, E. V.; Ianni, Al.; Ianni, An.; James, I.; Johnson, T. N.; Jollet, C.; Keeter, K.; Kendziora, C. L.; Koh, G.; Korablev, D.; Korga, G.; Kubankin, A.; Li, X.; Lissia, M.; Loer, B.; Lombardi, P.; Longo, G.; Ma, Y.; Machulin, I. N.; Mandarano, A.; Mari, S. M.; Maricic, J.; Marini, L.; Martoff, C. J.; Meregaglia, A.; Meyers, P. D.; Milincic, R.; Miller, J. D.; Montanari, D.; Monte, A.; Mount, B. J.; Muratova, V. N.; Musico, P.; Napolitano, J.; Agasson, A. Navrer; Odrowski, S.; Orsini, M.; Ortica, F.; Pagani, L.; Pallavicini, M.; Pantic, E.; Parmeggiano, S.; Pelczar, K.; Pelliccia, N.; Pocar, A.; Pordes, S.; Pugachev, D. A.; Qian, H.; Randle, K.; Ranucci, G.; Razeti, M.; Razeto, A.; Reinhold, B.; Renshaw, A. L.; Rescigno, M.; Riffard, Q.; Romani, A.; Rossi, B.; Rossi, N.; Rountree, D.; Sablone, D.; Saggese, P.; Saldanha, R.; Sands, W.; Savarese, C.; Schlitzer, B.; Segreto, E.; Semenov, D. A.; Shields, E.; Singh, P. N.; Skorokhvatov, M. D.; Smirnov, O.; Sotnikov, A.; Stanford, C.; Suvorov, Y.; Tartaglia, R.; Tatarowicz, J.; Testera, G.; Tonazzo, A.; Trinchese, P.; Unzhakov, E. V.; Verducci, M.; Vishneva, A.; Vogelaar, B.; Wada, M.; Walker, S.; Wang, H.; Wang, Y.; Watson, A. W.; Westerdale, S.; Wilhelmi, J.; Wojcik, M. M.; Xiang, Xi.; Xiao, X.; Xu, J.; Yang, C.; Zec, A.; Zhong, W.; Zhu, C.

    2017-01-01

    Here, DarkSide is a multi-stage program devoted to direct searches of Dark Matter particles with detectors based on double phase liquid Argon Time Projection Chamber. The DarkSide-50 setup is running underground at the Laboratori Nazionali del Gran Sasso. First it was operated with Atmospheric Argon and during that run (1422 ± 67) kg×d of truly background-free exposure has been accumulated. Obtained data made it possible to set a 90% C.L. upper limit on the WIMP-nucleon cross section of 6.1 × 10–44 cm2 (for a WIMP mass of 100 GeV/c2). Presently the detector is filled with Underground Argon, which is depleted in 39Ar by a factor of (1.4 ± 0.2)×103 with respect to Atmospheric Argon. Acquired so far (2616 ± 43) kg×d (71 live days) in combination with the data from the Atmospheric Argon run give us the 90% C.L. upper limit on the WIMP-nucleon spin-independent cross section of 2.0×10–44 cm2 for a WIMP mass of 100 GeV/c2. Up to date this is the best limit obtained with an argon target.

  6. Double Beta Decay Experiments: Present Status and Prospects for the Future

    NASA Astrophysics Data System (ADS)

    Barabash, A. S.

    The review of modern experiments on search and studying of double beta decay processes is done. Results of the most sensitive current experiments are discussed. The main attention is paid to EXO-200, KamLAND-Zen, GERDA-I and CUORE-0 experiments. Modern values of T1/2(2ν) and best present limits on neutrinoless double beta decay and double beta decay with Majoron emission are presented. Conservative limits on effective mass of a Majorana neutrino ( < 0.46 eV) and a coupling constant of Majoron to neutrino ( < 1.3 × 10-5) are obtained. In the second part of the review prospects of search for the neutrinoless double beta decay in new experiments with sensitivity to at the level of ∼ (0.01-0.1) eV are discussed. The main attention is paid to experiments of CUORE, GERDA, MAJORANA, EXO, KamLAND-Zen-2, SuperNEMO and SNO+. Possibilities of low-temperature scintillating bolometers on the basis of inorganic crystals (ZnSe, ZnMoO4, Li2MoO4, CaMoO4 and CdWO4) are considered too.

  7. Status and perspectives of neutrino physics at present and future experiments

    SciTech Connect

    Pagliarone, Carmine Elvezio E-mail: carmine.pagliarone@lngs.infn.it

    2016-03-25

    Neutrino Physics and Dark Matter searches play a crucial role in nowadays Particle and Astroparticle Physics. The present review paper will describe general properties of neutrinos and neutrino mass phenomenology (Dirac and Majorana masses). Space will be dedicated to the experimental attempts to answer the question of the neutrino mass hierarchy. We will give, then, a short review of the results of part of the experiments that have been running so far. We will also shortly summarize future experiments that plan to explore this very wide scientific area.

  8. Cultural immersion through international experiences among Japanese nurses: Present status, future intentions, and perceived barriers.

    PubMed

    Chiba, Yoko; Nakayama, Takeo

    2016-07-01

    Given limited exposure to various ethnicities, languages, and cultures, providing health care to an increasing foreign population in Japan will likely be challenging for Japanese nurses. This study aimed to examine past and intended future international experiences of Japanese nurses to assess their cultural immersion level. A cross-sectional electronic survey was conducted among 2029 nurses in 2010. Participants were categorized by travel purpose, and the frequency of non-holiday travel was analyzed. To examine participants' desire for and perceived feasibility of future non-holiday international experiences by background characteristics, logistic regression analyses were performed. Of 1039 participants, 10.1% had past non-holiday international experiences, with 80% having traveled to high-income, English-speaking countries. The median value for travel frequency was once, and the median duration of travel was less than 1 month. The most common purpose of travel was participation in short-term programs (e.g. professional training, language study). Fifty-one percent of female nurses reported a desire for future non-holiday international experiences. Of these, 37.2% considered such experiences feasible. Age of the youngest child, having nursing specialization, English proficiency, and past international experience were significant predictors for feasibility. Japanese nurses with foreign experience were considered valuable human resources for culturally appropriate care. Efforts should be made to integrate them into the Japanese healthcare setting. The present study revealed room for improvement in foreign language proficiency and cross-cultural training with a focus on non-English-speaking and developing countries. A supportive workplace environment should be created that allows nurses to pursue the international experiences they desire. © 2016 Japan Academy of Nursing Science.

  9. The Mini-Earth facility and present status of habitation experiment program

    NASA Astrophysics Data System (ADS)

    Nitta, Keiji

    The history of construction of the CEEF (the Mini-Earth), the configuration and scale of the CEEF are initially described. The effective usable areas in plant cultivation and animal holding and habitation modules and the accommodation equipments installed in each module are also explained. Mechanisms of the material circulation systems belonging to each module and subsystems in each material circulation system are introduced. Finally the results of pre-habitation experiments conducted until the year 2004 for clarifying the requirements in order to promote final closed habitation experiments are shown.

  10. Lorentz Invariance:. Present Experimental Status

    NASA Astrophysics Data System (ADS)

    Lämmerzahl, Claus

    2006-02-01

    Being one of the pillars of modern physics, Lorentz invariance has to be tested as precisely as possible. We review the present status of laboratory tests of Lorentz invariance. This includes the tests of properties of light propagation which are covered by the famous Michelson-Morley, Kennedy-Thorndike, and Ives-Stilwell experiments, as well as tests on dynamical properties of matter as, e.g., tests exploring the maximum velocity of massive particles or tests of the isotropy of quantum particles in Hughes-Drever experiments.

  11. REVIEWS OF TOPICAL PROBLEMS: Neutrinos from stellar core collapses: present status of experiments

    NASA Astrophysics Data System (ADS)

    Ryazhskaya, Ol'ga G.

    2006-10-01

    The responses of the existing underground detectors to neutrino bursts from collapsing stars evolving in accordance with various models are considered. The interpretation of the results of detecting neutrino radiation from the SN1987A supernova explosion is discussed. A combination of large scintillation counters interlayered with iron slabs (as a target for the electron neutrino interaction) is suggested as a detector for core collapse neutrinos. Bounds for the galactic rate of core collapses based on 28 years of observations by neutrino telescopes of RAS INR, LSD, and LVD detectors are presented.

  12. Swine flu vaccine: present status.

    PubMed

    Wiwanitkit, Viroj

    2009-11-01

    In early 2009, "swine flu", a new infectious disease, emerged in Mexico and further spread around the world. It is currently accepted as the most problematic infection at present. To control this new infection, the swine flu vaccine is the hope. The reasons that we need the swine flu vaccine will be discussed. Also, the present status, current attempts and problems of swine flu vaccine development will be presented in this commentary.

  13. Spinal cord stimulation in treatment of chronic benign pain: challenges in treatment planning and present status, a 22-year experience.

    PubMed

    Kumar, Krishna; Hunter, Gary; Demeria, Denny

    2006-03-01

    To present an in-depth analysis of clinical predictors of outcome including age, sex, etiology of pain, type of electrodes used, duration of pain, duration of treatment, development of tolerance, employment status, activities of daily living, psychological status, and quality of life. Suggestions for treatment of low back pain with a predominant axial component are addressed. We analyzed the complications and proposed remedial measures to improve the effectiveness of this modality. Study group consists of 410 patients (252 men, 58 women) with a mean age of 54 years and a mean follow-up period of 97.6 months. All patients were gated through a multidisciplinary pain clinic. The study was conducted over 22 years. The early success rate was 80% (328 patients), whereas the long-term success rate of internalized patients was 74.1% (243 patients) after the mean follow-up period of 97.6 months. Hardware-related complications included displaced or fractured electrodes, infection, and hardware malfunction. Etiologies demonstrating efficacy included failed back syndrome, peripheral vascular disease, angina pain, complex regional pain syndrome I and II, peripheral neuropathy, lower limb pain caused by multiple sclerosis. Age, sex, laterality of pain or number of surgeries before implant did not play a role in predicting outcome. The percentage of pain relief was inversely related to the time interval between pain onset and time of implantation. Radicular pain with axial component responded better to dual Pisces electrode or Specify-Lead implantation. Spinal cord stimulation can provide significant long-term pain relief with improved quality of life and employment. Results of this study will be effective in better defining prognostic factors and reducing complications leading to higher success rates with spinal cord stimulation.

  14. MOON for a next-generation neutrino-less double-beta decay experiment: Present status and perspective

    SciTech Connect

    Shima, T.; Doe, P.J.; Ejiri, H.; Elliot, S.R.; Engel, J.; Finger, M.; Finger, M.; Fushimi, K.; Gehman, V.M.; Greenfield, M.B.; Hazama, R.; /Hiroshima U. /NIRS, Chiba

    2008-01-01

    The performance of the MOON detector for a next-generation neutrino-less double-beta decay experiment was evaluated by means of the Monte Carlo method. The MOON detector was found to be a feasible solution for the future experiment to search for the Majorana neutrino mass in the range of 100-30 meV.

  15. MOON for a next-generation neutrino-less double-beta decay experiment; present status and perspective

    NASA Astrophysics Data System (ADS)

    Shima, T.; Doe, P. J.; Ejiri, H.; Elliot, S. R.; Engel, J.; Finger, M.; Finger, M., Jr.; Fushimi, K.; Gehman, V. M.; Greenfield, M. B.; Hazama, R.; Imaseki, H.; Kavitov, P.; Kekelidze, V. D.; Kitamura, H.; Matsuoka, K.; Nakamura, H.; Nomachi, M.; Para, A.; Robertson, R. G. H.; Slunecka, M.; Shirkov, G. D.; Sissakian, A. N.; Titov, A. I.; Uchihori, Y.; Umehara, S.; Vaturin, V.; Voronov, V. V.; Wilkerson, J. F.; Will, D. I.; Yasuda, K.; Yoshida, S.

    2008-07-01

    The performance of the MOON detector for a next-generation neutrino-less double-beta decay experiment was evaluated by means of the Monte Carlo method. The MOON detector was found to be a feasible solution for the future experiment to search for the Majorana neutrino mass in the range of 100-30 meV.

  16. Schedule and status of irradiation experiments

    SciTech Connect

    Rowcliffe, A.F.; Grossbeck, M.L.

    1997-04-01

    To provide an updated summary of the status of irradiation experiments for the neutron-interactive materials program. The current status of reactor irradiation experiments is presented in tables summarizing the experimental objectives, conditions, and schedule. Currently, the program has two irradiation experiments in reactor; and 8 experiments in the planning or design stages. Postirradiation examination and testing is in progress on 18 experiments.

  17. Status of the SNO+ experiment

    NASA Astrophysics Data System (ADS)

    Kaspar, Jarek; SNO+ Collaboration

    2011-10-01

    SNO+ is a large liquid scintillator detector following the successful SNO experiment with liquid scintillator replacing the heavy water. Located 2 km underground in Vale nickel mine in Sudbury, Canada, the experiment will detect solar neutrinos including the pep and CNO neutrinos, neutrinos from Earth, reactors, and supernovae. In addition, the experiment will search for neutrino-less double beta decay by adding 150-Nd to the scintillator. I will present the status of the experiment. The research has been supported under DOE Grant #DE-FG02-97ER41020.

  18. Present status of aircraft instruments

    NASA Technical Reports Server (NTRS)

    1932-01-01

    This report gives a brief description of the present state of development and of the performance characteristics of instruments included in the following group: speed instruments, altitude instruments, navigation instruments, power-plant instruments, oxygen instruments, instruments for aerial photography, fog-flying instruments, general problems, summary of instrument and research problems. The items considered under performance include sensitivity, scale errors, effects of temperature and pressure, effects of acceleration and vibration, time lag, damping, leaks, elastic defects, and friction.

  19. Methaemoglobinaemia presenting with status epilepticus.

    PubMed Central

    Malhotra, R; Hughes, G

    1996-01-01

    A case is reported of methaemoglobinaemia presenting with recurrent fits in the absence of cyanosis. A low oxygen saturation measured on pulse oximetry that fails to improve with oxygen treatment, the presence of "chocolate brown" blood that does not change on exposure to air, and a high PaO2 arterial blood gas with oxygen therapy should support such a diagnosis. A diagnostic blood methaemoglobin level should be obtained. PMID:9091107

  20. [Present status of cancer treatment].

    PubMed

    Larraín, C

    1991-10-01

    Cancer is the second cause of mortality in Chile: 12,000 deaths and 27,000 admissions were registered during 1982. Gastric and pulmonary cancer account for the highest mortality rates (23.2 and 9.7/100,000). Cancer prognosis has improved in thyroid, uterus and testes cancers, melanoma, Hodgkin's Disease etc, with 67 to 92% 5-year survival rates, while results are not as good in lung, gastric, colorectal, kidney, pancreas, etc, with only 3 to 52% 5-year survival rates. Treatment failure is attributed to cellular mutations and early metastases. At present, surgery is less aggressive and is associated to radiotherapy and chemotherapy; megavoltage radiation equipment and the use of radiosensitizers allow double radiation dose; chemotherapy complications are avoided with hematopoietic growth factors. It is possible to improve the prognosis of lung cancer avoiding the use of tobacco and of colorectal cancer reducing fats in the diet of these pts. Early detection and better chemotherapy have improved the prognosis of breast and uterus cancer. With these measures a 20 to 50% reduction in cancer rates is expected in the USA for the year 2000. Their application is urgent in our country.

  1. Big bang nucleosynthesis: Present status

    NASA Astrophysics Data System (ADS)

    Cyburt, Richard H.; Fields, Brian D.; Olive, Keith A.; Yeh, Tsung-Han

    2016-01-01

    Big bang nucleosynthesis (BBN) describes the production of the lightest nuclides via a dynamic interplay among the four fundamental forces during the first seconds of cosmic time. A brief overview of the essentials of this physics is given, and new calculations presented of light-element abundances through 6Li and 7Li, with updated nuclear reactions and uncertainties including those in the neutron lifetime. Fits are provided for these results as a function of baryon density and of the number of neutrino flavors Nν. Recent developments are reviewed in BBN, particularly new, precision Planck cosmic microwave background (CMB) measurements that now probe the baryon density, helium content, and the effective number of degrees of freedom Neff. These measurements allow for a tight test of BBN and cosmology using CMB data alone. Our likelihood analysis convolves the 2015 Planck data chains with our BBN output and observational data. Adding astronomical measurements of light elements strengthens the power of BBN. A new determination of the primordial helium abundance is included in our likelihood analysis. New D/H observations are now more precise than the corresponding theoretical predictions and are consistent with the standard model and the Planck baryon density. Moreover, D/H now provides a tight measurement of Nν when combined with the CMB baryon density and provides a 2 σ upper limit Nν<3.2 . The new precision of the CMB and D/H observations together leaves D/H predictions as the largest source of uncertainties. Future improvement in BBN calculations will therefore rely on improved nuclear cross-section data. In contrast with D/H and 4He, 7Li predictions continue to disagree with observations, perhaps pointing to new physics. This paper concludes with a look at future directions including key nuclear reactions, astronomical observations, and theoretical issues.

  2. Experiment SPHERE status 2008

    NASA Astrophysics Data System (ADS)

    Shaulov, S. B.; Besshapov, S. P.; Kabanova, N. V.; Sysoeva, T. I.; Antonov, R. A.; Anyuhina, A. M.; Bronvech, E. A.; Chernov, D. V.; Galkin, V. I.; Tkaczyk, W.; Finger, M.; Sonsky, M.

    2009-12-01

    The expedition carried out in March, 2008 to Lake Baikal became an important stage in the development of the SPHERE experiment. During the expedition the SPHERE-2 installation was hoisted, for the first time, on a tethered balloon, APA, to a height of 700 m over the lake surface covered with ice and snow. A series of test measurements were made. Preliminary results of the data processing are presented. The next plan of the SPHERE experiment is to begin a set of statistics for constructing the CR spectrum in the energy range 10-10 eV.

  3. COHERENT Experiment: current status

    NASA Astrophysics Data System (ADS)

    Akimov, D.; Albert, J. B.; Awe, C.; Barbeau, P. S.; Becker, B.; Belov, V.; Bolozdynya, A.; Burenkov, A.; Cabrera-Palmer, B.; Cervantes, M.; Collar, J. I.; Cooper, R. J.; Cooper, R. L.; Cuesta, C.; Dean, D.; del Valle Coello, M.; Detwiler, J.; Dolgolenko, A. G.; D'Onofrio, M.; Eberhardt, A.; Efremenko, Y.; Elliott, S. R.; Etenko, A.; Fabris, L.; Fields, N.; Fox, W.; Galindo-Uribarri, A.; Green, M.; Heath, M.; Hedges, S.; Iverson, E. B.; Kaufman, L. J.; Klein, S. R.; Khromov, A.; Konovalov, A.; Kovalenko, A.; Kumpan, A.; Li, L.; Lu, W.; Mann, K.; Melikyan, Y.; Markoff, D.; Miller, K.; Mueller, P.; Naumov, P.; Newby, J.; Parno, D.; Penttila, S.; Perumpilly, G.; Radford, D.; Ray, H.; Raybern, J.; Reyna, D.; Rich, G. C.; Rimal, D.; Rudik, D.; Scholberg, K.; Scholz, B.; Sinev, G.; Snow, W. M.; Sosnovtsev, V.; Shakirov, A.; Suchyta, S.; Suh, B.; Tayloe, R.; Thornton, R. T.; Tolstukhin, I.; Vanderwerp, J.; Vetter, K.; Virtue, C.; Yu, C. H.; Zettlemoyer, J.; Zderic, A.; COHERENT Collaboration

    2017-01-01

    The COHERENT Collaboration is realizing a long term neutrino physics research program. The main goals of the program are to detect and study elastic neutrino-nucleus scattering (CEνNS). This process is predicted by Standard Model but it has never been observed experimentally because of the very low energy of the recoil nucleus. COHERENT is using different detector technologies: CsI[Na] and NaI scintillator crystals, a single-phase liquid Ar and a Ge detectors. The placement of all the detector setups is in the basement of the Spallation Neutron Source (SNS) at Oak Ridge National Laboratory (ORNL). The current status of the COHERENT experimental program is presented.

  4. Status of the MINOS Experiment

    SciTech Connect

    Elizabeth Buckley-Geer

    2003-03-17

    We report on the status of the MINOS long baseline neutrino experiment presently under construction at the Fermi National Accelerator Laboratory and the Soudan mine. There is growing evidence that the solar neutrino and atmospheric neutrino anomalies [1] are the result of neutrino oscillations. The MINOS experiment is a long baseline neutrino oscillation experiment designed to study the region of parameter space indicated by the SuperKamiokande atmospheric neutrino results [2]. The experiment consists of two detectors, one with a mass of 980 tons located at Fermilab (the near detector) and the other of mass 5400 tons located 731 km away in the Soudan mine in northern Minnesota (the far detector). The third component is the neutrino beam which is currently under construction at Fermilab.

  5. ARC EMCS Experiments (Seedling Growth-2) Experiment Status

    NASA Technical Reports Server (NTRS)

    Heathcote, David; Steele, Marianne

    2015-01-01

    Presentation of the status of the ARC ISS (International Space Station) Experiment, Seedling Growth-2 to the Payload Operations Investigator Working Group meeting at MSFC, Huntsville AL. The experiment employs the European Modular Cultivation System (ECMS).

  6. BIOLAB experiment development status 2005

    NASA Astrophysics Data System (ADS)

    Brinckmann, Enno; Manieri, Pierfilippo

    2005-08-01

    BIOLAB, ESA's major facility for biological Space research on the International Space Station (ISS), will accommodate the first two batches of experiments after its launch with the "Columbus" Laboratory (spring 2007). Seven experiments have been selected for development: three of the first batch have concluded Phase A/B with the testing of the breadboards, in which the main functions of the scientific studies can be simulated and defined for further inputs to the final design of the experiment hardware. The biological specimens of the first batch are scorpions, plant seedlings, bacteria suspensions and cell cultures of mammalian and invertebrate origin. The experiment protocols request demanding resources ranging from life support for the entire mission (90 days) to skilled crew operations and transport/storage in deep freezers. Even more sophisticated experiments are in preparation for the second batch, dealing with various cell culture systems. This presentation gives an overview about the experiment development status, whilst the science background and breadboard test results will be presented by the respective experiment teams.

  7. Status Change and the Presentation of Minority Perspectives

    ERIC Educational Resources Information Center

    Youngreen, Reef

    2010-01-01

    How does the presentation of minority perspectives in the context of group problem-solving tasks affect the relative status positions of group members? The answer seems to depend on the initial position of the minority view presenters. Results from a controlled laboratory experiment show support for the hypothesis that people lose status for…

  8. Status Change and the Presentation of Minority Perspectives

    ERIC Educational Resources Information Center

    Youngreen, Reef

    2010-01-01

    How does the presentation of minority perspectives in the context of group problem-solving tasks affect the relative status positions of group members? The answer seems to depend on the initial position of the minority view presenters. Results from a controlled laboratory experiment show support for the hypothesis that people lose status for…

  9. National Hydrogen Learning Demonstration Status (Presentation)

    SciTech Connect

    Wipke, K.; Sprik, S.; Kurtz, J.; Ramsden, T.; Ainscough, C.; Saur, G.

    2012-02-01

    This presentation discusses U.S. DOE Learning Demonstration Project goals, fuel cell vehicle and H2 station deployment status, and technical highlights of vehicle and infrastructure analysis results and progress.

  10. Schedule and status of irradiation experiments

    SciTech Connect

    Rowcliffe, A.F.; Grossbeck, M.L.; Robertson, J.P.

    1998-09-01

    The current status of reactor irradiation experiments is presented in tables summarizing the experimental objectives, conditions, and schedule. Currently, the program has one irradiation experiment in reactor and five experiments in the design or construction stages. Postirradiation examination and testing is in progress on ten experiments.

  11. Schedule and status of irradiation experiments

    SciTech Connect

    Rowcliffe, A.F.; Grossbeck, M.L.; Robertson, J.P.

    1998-03-01

    The current status of reactor irradiation experiments is presented in tables summarizing the experimental objectives, conditions, and schedule. Currently, the program has four irradiation experiments in reactor, and five experiments in the design or construction stages. Postirradiation examination and testing is in progress on ten experiments.

  12. Status of Pion Decay Experiments

    NASA Astrophysics Data System (ADS)

    Numao, T.

    2016-11-01

    The branching ratio of pion decays, {Re/}_μ = Γ ({{{π }}^ + } \\to {e^ + }ν + {e^ + }{{ν γ }})/Γ ({{{π }}^ + } \\to {{{μ }}^ + }ν + {{{μ }}^ + }ν {{γ }}), has provided a sensitive test of electron-muon universality in weak interactions. The uncertainty of the Standard Model prediction is at a 0.01% level. Although a recent measurement, Re /μ = (1.2344 ± 0.0023(stat) ± 0.0019(syst)) × 10-4, reduced the experimental uncertainty by a factor of two, there is room for improvement by more than an order of magnitude. The status of two {{{π }}^ + } \\to {e^ + }ν experiments at TRIUMF and PSI as well as related pion decay experiments is presented.

  13. Fuel Cell Technology Status - Voltage Degradation (Presentation)

    SciTech Connect

    Kurtz, J.; Wipke,; Sprik, S.; Saur, G.

    2012-06-01

    This presentation describes an independent assessment of fuel cell durability status and discusses the project's relevance to the Department of Energy Hydrogen and Fuel Cells Program; NREL's analysis approach; the FY12 technical accomplishments including the fourth annual publication of results; and project collaborations and future work.

  14. Present status of TOPAZ FASTBUS system

    SciTech Connect

    Ikeda, H.; Tauchi, T.; Yamauchi, M.

    1986-02-01

    The architecture of the data acquisition system for the TOPAZ detector is reviewed, together with the description on the present status of the FASTBUS development. Miniature version of TOPAZ FASTBUS system is currently being set up for the cosmic ray test of the TOPAZ TPC under control of VAX/FPI.

  15. Status of the CBM experiment

    NASA Astrophysics Data System (ADS)

    Heuser, Johann M.

    2015-05-01

    The Compressed Baryonic Matter (CBM) experiment at the Facility for Anti-Proton and Ion Research (FAIR) will explore the phase diagram of strongly interacting matter at highest net baryon densities and moderate temperatures. The CBM physics program will be started with beams delivered by the SIS 100 synchrotron, providing energies from 2 to 11 GeV/nucleon for heavy nuclei, up to 14 GeV/nucleon for light nuclei, and 29 GeV for protons. The highest net baryon densities will be explored with ion beams up to 45 GeV/nucleon energy delivered by SIS 300 in the next stage of FAIR. Collision rates up to 107 per second are required to produce very rare probes with unprecedented statistics in this energy range. Their signatures are complex. These conditions call for detector systems designed to meet the extreme requirements in terms of rate capability, momentum and spatial resolution, and a novel DAQ and trigger concept which is not limited by latency but by throughput. The article discusses the development status of the CBM sub-systems for charged particle tracking, vertex detection, electron/muon identification, hadron/time-of-flight measurement, electromagnetic and zero-degree calorimetry, in terms of prototypes and expected physics performance. The concept and development status of CBM's central detector, the Silicon Tracking System STS are presented in somewhat more detail.

  16. Thyrotoxic crisis presenting as status epilepticus.

    PubMed Central

    Safe, A. F.; Griffiths, K. D.; Maxwell, R. T.

    1990-01-01

    A 30 year old male patient with thyrotoxic crisis presenting as status epilepticus is reported. The aetiology, manifestations and management of this medical emergency are discussed. The importance of prompt, vigorous and comprehensive treatment of thyrotoxic crisis is emphasized. Rapid control of hyperthyroidism as well as other supportive measures are essential if the high fatality rate is to be reduced. Comprehensive management reduces mortality from 90% to 20%. PMID:2349191

  17. Status of the OLYMPUS Experiment

    NASA Astrophysics Data System (ADS)

    Schmidt, Axel; Olympus Collaboration

    2016-03-01

    The OLYMPUS Experiment finished collecting data at DESY, Hamburg, in 2013, and the analysis effort is well underway. The goal of the experiment is to measure the ratio of electron-proton to positron-proton elastic scattering cross sections with 1 percent uncertainty. Deviation in this ratio from unity is evidence of hard two-photon exchange, an effect which may be responsible for the current proton form-factor discrepancy. At OLYMPUS, alternating beams of positrons and electrons were directed through a windowless hydrogen gas target, and the scattered lepton and recoiling proton were detected in coincidence in a large-acceptance magnetic spectrometer. Forward tracking telescopes, and Møller/Bhabha calorimeters independently monitored the relative luminosity of the electron and positron running modes. Over 4 fb-1 of integrated luminosity were collected, giving OLYMPUS excellent statistical precision. The analysis procedure as well as the current status will be presented. This work is supported by DOE Grant DE-FG02-94ER40818.

  18. Optical profiling of anticoagulation status (Conference Presentation)

    NASA Astrophysics Data System (ADS)

    Tshikudi, Diane M.; Tripathi, Markandey M.; Hajjarian, Zeinab; Nadkarni, Seemantini K.

    2016-02-01

    Defective blood coagulation resulting from excessive procoagulant activity often leads to thrombotic disorders such as stroke and myocardial infarction. A variety of oral and injectable anticoagulant drugs are prescribed to prevent or treat life-threatening thrombosis. However, due to bleeding complications often associated with anticoagulant treatment, routine monitoring and accurate dosing of anticoagulant therapy is imperative. We have developed Optical thromboelastography (OTEG), a non-contact approach that utilizes a drop of whole blood to measure blood coagulation status in patients. Here, we demonstrate the capability of OTEG for rapidly monitoring anticoagulation in whole blood samples. OTEG monitors coagulation status by assessing changes in blood viscosity from temporal intensity fluctuations of laser speckle patterns during clotting. In OTEG a blood drop is illuminated with coherent light and the blood viscosity is measured from the speckle intensity autocorrelation curve, g2 (t). The metrics, clotting time (R+k), clot progression (angle) and maximum clot stiffness (MA) are then extracted. The aim of the current study was to evaluate the accuracy of OTEG in assessing anticoagulation status of common anticoagulants including heparin, argatroban and rivaroxaban status. A dose-dependent prolongation of R+k was observed in anticoagulated blood, which closely corresponded with standard-reference Thromboelastography (TEG) (r 0.87-0.99, P>0.01 for all cases). OTEG angle was unaltered by anticoagulation whereas TEG angle presented a dose-dependent diminution probably linked to clot rupture. In both OTEG and TEG, MA was unaffected by heparin, argatroban or rivaroxaban. We conclude that OTEG can accurately monitor anticoagulation status following treatment, potentially providing a powerful tool for routine monitoring of patients in the doctor's office or in the home setting.

  19. Gabapentin withdrawal presenting as status epilepticus.

    PubMed

    Barrueto, Fermin; Green, Jonah; Howland, Mary Ann; Hoffman, Robert S; Nelson, Lewis S

    2002-01-01

    A 34-year-old male with lumbar disc disease and surgery was placed on gabapentin daily for chronic back pain. He remained on a steady dose of 8000 mg/day for 9 months, almost doubled what is considered therapeutic. He ran out of medication, was unable to refill his prescription for 2 days and presented to the emergency department in status epilepticus. There was no previous history of seizure disorder and he was on no other medications. A medical evaluation for an alternative etiology of his seizures was negative. Although gabapentin withdrawal has been previously reported and usually consists of anxiety, diaphoresis, and palpitations, this is the first reported patient with generalized seizures and status epilepticus secondary to gabapentin withdrawal.

  20. Status of the UCNA Experiment

    NASA Astrophysics Data System (ADS)

    Brown, Michael; UCNA Collaboration

    2015-04-01

    The UCNA Experiment at the Los Alamos Neutron Science Center (LANSCE) is the first measurement of the β-decay asymmetry parameter A0 using polarized ultracold neutrons (UCN). A0, which represents the parity-violating angular correlation between the neutron spin and the decay electron's momentum, determines λ =gA /gV , the ratio of the weak axial-vector and vector coupling constants. Measurements of the β-asymmetry presently provide the most precise determination of λ, which, together with the lifetime, permits the extraction of the CKM matrix element Vud solely from neutron decay. At LANSCE, UCN are produced in a solid deuterium source and polarized via transport through a 7 T magnetic field. Their spins can then be flipped in an Adiabatic Fast Passage spin flipper prior to storage within a 1 T solenoidal spectrometer with electron detectors at each end. Previous UCNA results (data from 2010 and earlier) were limited by systematic uncertainties, in particular those from the UCN polarization, calibration of the electron energy, and electron backscattering. This talk will present the status of the analysis of data obtained during run periods in 2011-2013, particularly focusing on updated work on the UCN polarization and energy calibration.

  1. CMS: Present status, limitations, and upgrade plans

    SciTech Connect

    Cheung, H.W.K.; /Fermilab

    2011-09-01

    An overview of the CMS upgrade plans will be presented. A brief status of the CMS detector will be given, covering some of the issues we have so far experienced. This will be followed by an overview of the various CMS upgrades planned, covering the main motivations for them, and the various R&D efforts for the possibilities under study. The CMS detector has been working extremely well since the start of data-taking at the LHC as is evidenced by the numerous excellent results published by CMS and presented at this workshop and recent conferences. Less well documented are the various issues that have been encountered with the detector. In the spirit of this workshop I will cover some of these issues with particular emphasis on problems that motivate some of the upgrades to the CMS detector for this decade of data-taking. Though the CMS detector has been working extremely well and expectations are great for making the most of the LHC luminosity, there have been a number of issues encountered so far. Some of these have been described and while none currently presents a problem for physics performance, some of them are expected to become more problematic, especially at the highest Phase 1 luminosities for which the majority of the integrated luminosity will be collected. These motivate upgrades for various parts of the CMS detector so that the current excellent physics performance can be maintained or even surpassed in the realm of the highest Phase 1 luminosities.

  2. Status of the HELIX Experiment

    NASA Astrophysics Data System (ADS)

    Wakely, Scott; Helix Collaboration

    2017-01-01

    HELIX, the High-Energy Light Isotope eXperiment, is a new balloon-borne superconducting magnet spectrometer designed to make detailed measurements of cosmic-ray chemical and isotopic abundances. Measurements of this kind, in particular of the ratio of radioactive 10Be to 9Be at energies to 3 GeV/nuc, can provide profound insights into cosmic-ray propagation processes and confinement timescales. HELIX is scheduled to make its first flight during the 2019/2020 Antarctic campaign. In this talk, we will discuss the goals and design of the instrument and describe the status of the program.

  3. Status of the QUAD Experiment

    NASA Astrophysics Data System (ADS)

    Church, Sarah

    2006-12-01

    The QUaD (QUEST at DASI) experiment comprises a 31-pixel polarization-sensitive bolometric camera mounted on a 2.6m telescope at the South Pole. QUaD has completed two seasons of observations designed to measure the polarization of the Cosmic Microwave Background (CMB). I will report on the status of QUaD data analysis and interpretation. QUaD is a collaboration between institutions in the US, the UK and Ireland and is funded by the NSF, PPARC and Enterprise Ireland.

  4. Status of the OLYMPUS experiment

    NASA Astrophysics Data System (ADS)

    Kohl, Michael

    2013-10-01

    The OLYMPUS experiment at DESY has been carried out to quantify the effect of two-photon exchange in elastic lepton-proton scattering, which has been the favored explanation for the discrepancy in the form factor ratio between the Rosenbluth separation and polarization transfer methods. While the effect can not be calculated from first principles, it can be determined experimentally by comparing the positron-proton and electron-proton elastic cross sections. The OLYMPUS experiment has used intense stored positron and electron beams along with an internal unpolarized hydrogen target and a large acceptance detector to measure the ratio of elastic scattering cross sections. Particular emphasis has been put on optimal control of systematics, by redundantly monitoring luminosity, beam properties and detector efficiencies. Data taking has been completed in January 2013. An overview of the experiment will be given along with the status of the analysis. Supported by NSF grants 0855473, 0959521, 1207672, and by DOE Early Career Award DE-SC0003884.

  5. Status of Japanese Experiment Module (JEM) activities

    NASA Technical Reports Server (NTRS)

    1991-01-01

    The current status of the JEM activities are presented in graphic form. The JEM spacecraft configuration is presented. The JEM configuration consist of the Pressurized Module, the Exposed Facility, the Experiment Logistics Module which consist of a pressurized section and an exposed section; and the Remote Manipulator System. The master schedule of the space station is given. Also the development tests of the structure and mechanism, the electrical power system, the data management system, the thermal control system, the environment control system, the experiment support system, and the remote manipulator system are listed.

  6. Recent developments and present status of telepathology.

    PubMed

    Kayser, K; Beyer, M; Blum, S; Kayser, G

    2000-01-01

    Telepathology which is the diagnostic work of a pathologist at a distance has been developed to routine application within the last ten years. It can be classified in relation to application, technical solutions, or performance conditions. Diagnostic pathology performance distinguishes primary diagnosis (for example, frozen section statement) from secondary diagnosis (for example, expert consultation) and quality assurance (diagnostic accuracy, continuous education and training). Applications comprise (a) frozen section service; (b) expert consultations; (c) remote control measurements; and (d) education and training. The technical solutions distinguish active (remote control, live imaging) systems from passive (conventional microscope handling, static imaging), and the performance systems with interactive (on-line, live imaging) use from those with passive (offline, static imaging) practice. Intra-operative frozen section service is mainly performed with remote control systems; whereas expert consultations and education/training are commonly based upon Internet connections with static imaging in an off-line mode. The image quality, transfer rates, and screen resolution of active and passive telepathology systems are sufficient for an additional or primary judgment of histological slides and cytological smears. From the technical point of view, remote control telepathology requires a fast transfer and at least near on-line judgement of images, i.e., image acquisition, transfer and presentation can be considered one performance function. Thus, image size, line transfer rate and screen resolution define the practicability of the system. In expert consultation, the pixel resolution of images and natural color presentation are the main factors for diagnostic support, whereas the line transfer rate is of minor importance. These conditions define the technical compartments, especially size and resolution of camera and screen. The performance of commercially available

  7. Present Status of Radiotherapy in Clinical Practice

    NASA Astrophysics Data System (ADS)

    Duehmke, Eckhart

    Aims of radiation oncology are cure from malignant diseases and - at the same time preservation of anatomy (e.g. female breast, uterus, prostate) and organ functions (e.g. brain, eye, voice, sphincter ani). At present, methods and results of clinical radiotherapy (RT) are based on experiences with natural history and radiobiology of malignant tumors in properly defined situations as well as on technical developments since World War II in geometrical and biological treatment planning in teletherapy and brachytherapy. Radiobiological research revealed tolerance limits of healthy tissues to be respected, effective total treatment doses of high cure probability depending on histology and tumor volume, and - more recently - altered fractionation schemes to be adapted to specific growth fractions and intrinsic radiosensitivities of clonogenic tumor cells. In addition, Biological Response Modifiers (BRM), such as cis-platinum, oxygen and hyperthermia may steepen cell survival curves of hypoxic tumor cells, others - such as tetrachiordekaoxid (TCDO) - may enhance repair of normal tissues. Computer assisted techniques in geometrical RT-planning based on individual healthy and pathologic anatomy (CT, MRT) provide high precision RT for well defined brain lesions by using dedicated linear accelerators (Stereotaxy). CT-based individual tissue compensators help with homogenization of distorted dose distributions in magna field irradiation for malignant lymphomas and with total body irradiation (TBI) before allogeneic bone marrow transplantation, e.g. for leukemia. RT with fast neutrons, Boron Neutron Capture Therapy (BNCT), RT with protons and heavy ions need to be tested in randomized trials before implementation into clinical routine.

  8. [Present status of psychosurgery in Spain].

    PubMed

    Barcia, J A; Bertolín-Guillén, J M; Barcia-González, J; Campos, J; Hernández, M E

    2007-08-01

    In order to know the present activity of psychosurgery in Spain, and the opinion of neurosurgeons relative to it, a survey was designed and applied to all active neurosurgeons in our country. We obtained data from at least one neurosurgeon from the 74 neurosurgical centers in Spain (response rate= 100%). Only 6 neurosurgeons performed psychosurgical interventions. In total, 121 psychosurgeries were performed between 1999 and 2003, 75.7% of them in private centers. The most frequent indication is obsessive-compulsive disorder and the most frequent technique is anterior capsulotomy, although techniques and indications differ among the practising neurosurgeons. Those not performing them cite lack of patient referral (54.4%) or unexperience (36.8%) as the causes. A suspected lack of efficacy or the possible adverse effects are seldom expressed. The possibility of using deep brain stimulation for psychiatric indications, as well as the experience of some neurosurgeons and the favorable opinion of the rest, might increase the number of operations in our country.

  9. Status of the CDF II experiment

    SciTech Connect

    S. Rolli

    2002-08-14

    The status of the CDF II experiment is described. Since operations start-up for run II data taking in March 2001, the CDF detector has been commissioned using about 20 pb{sup -1} of data provided by the Tevatron (utilized about 4-8). Most detector components are ready for physics quality data. The goal is to present the first physics results by summer-fall 2002.

  10. Present status on experimental search for pentaquarks

    NASA Astrophysics Data System (ADS)

    Liu, Tianbo; Mao, Yajun; Ma, Bo-Qiang

    2014-04-01

    It has been ten years since the first report for a positive strangeness pentaquark-like baryon state. However, the existence of the pentaquark state is still controversial. Some contradictions between the experiments are unsolved. In this paper, we review the experimental search for the pentaquark candidates Θ+, Θ++, Ξ- -, Θ c0 and N* in detail. We review the experiments with positive results and compare the experiments with similar conditions but opposite results.

  11. Status of the DarkLight Experiment

    NASA Astrophysics Data System (ADS)

    Epstein, Charles; DarkLight Collaboration

    2015-04-01

    The DarkLight experiment aims to search for a dark photon in the low mass region 10-100 MeV/c2. The process e- p -->e- pe+e- will be studied by using the Jefferson Lab energy-recovering linac's high-intensity 100 MeV, 1 MW electron beam incident on a gaseous hydrogen target. Full track reconstruction of the four-particle final state will be performed in order to search for a resonance on the e+-e- invariant mass spectrum. A Phase 1 DarkLight experiment is in preparation in which we will additionally address new Standard Model measurements at low energy and high intensity. The design of the complete (Phase 2) DarkLight experiment is currently in progress. The status of the Phase 1 experiment will be described and the plan for the Phase 2 experiment presented.

  12. ATLAS experimental equipment. November 1983 workshop and present status

    SciTech Connect

    Not Available

    1984-01-01

    The latest workshop was held in November 1983 with the purpose of presenting an overview of the experimental stations planned for ATLAS, describing the current status of each individual apparatus, soliciting final input on devices of the first phase (i.e. on those that will be ready when beams from ATLAS become available in late Spring of 1985), and discussing and collecting new ideas on equipment for the second phase. There were short presentations on the status of the various projects followed by informal discussions. The presentations mainly concentrated on new equipment for target area III, but included some descriptions of current apparatus in target area II that might also be of interest for experiments with the higher-energy beams available in area III. The meeting was well attended with approx. 50 scientists, approximately half of them from institutions outside Argonne. The present proceedings summarize the presentations and discussions of this one-day meeting. In addition we take the opportunity to include information about developments since this meeting and an update of the current status of the various experimental stations. We would like to emphasize again that outside-user input is extremely welcome.

  13. Status of the GERDA experiment

    NASA Astrophysics Data System (ADS)

    Medinaceli, E.; Gerda Collaboration

    2017-07-01

    The GERDA experiment is designed to search for neutrinoless double beta decay (0νββ) using ^{76} Ge, therefore asses the nature of neutrinos (Dirac or Majorana). In the so-called Phase I, with an exposure of 21.6kr yr, GERDA reached a background index (BI) of 10^{-2}{ cts/(keV kg yr)} at 90% CL No signal was found during this phase and a lower limit on the process half-life of 2.1×10^{25}{ yr} was derived (90% CL). GERDA is currently being upgraded to its Phase II, where the ^{76} Ge mass will be double, and it is expected to reduce by an order of magnitude the BI. For 0νββ half-lives at the order of 10^{26}{ yr} will be derived in the absence of signal. The experimental techniques used by GERDA will be depicted and the most relevant results from Phase I will be shown; as well as details on the upgrades of Phase II, including the status of the additional detectors deployed recently, and the new background reduction techniques using the active liquid Argon veto.

  14. Present status of Accelerator-Based BNCT

    PubMed Central

    Kreiner, Andres Juan; Bergueiro, Javier; Cartelli, Daniel; Baldo, Matias; Castell, Walter; Asoia, Javier Gomez; Padulo, Javier; Suárez Sandín, Juan Carlos; Igarzabal, Marcelo; Erhardt, Julian; Mercuri, Daniel; Valda, Alejandro A.; Minsky, Daniel M.; Debray, Mario E.; Somacal, Hector R.; Capoulat, María Eugenia; Herrera, María S.; del Grosso, Mariela F.; Gagetti, Leonardo; Anzorena, Manuel Suarez; Canepa, Nicolas; Real, Nicolas; Gun, Marcelo; Tacca, Hernán

    2016-01-01

    Aim This work aims at giving an updated report of the worldwide status of Accelerator-Based BNCT (AB-BNCT). Background There is a generalized perception that the availability of accelerators installed in hospitals, as neutron sources, may be crucial for the advancement of BNCT. Accordingly, in recent years a significant effort has started to develop such machines. Materials and methods A variety of possible charged-particle induced nuclear reactions and the characteristics of the resulting neutron spectra are discussed along with the worldwide activity in suitable accelerator development. Results Endothermic 7Li(p,n)7Be and 9Be(p,n)9B and exothermic 9Be(d,n)10B are compared. In addition to having much better thermo-mechanical properties than Li, Be as a target leads to stable products. This is a significant advantage for a hospital-based facility. 9Be(p,n)9B needs at least 4–5 MeV bombarding energy to have a sufficient yield, while 9Be(d,n)10B can be utilized at about 1.4 MeV, implying the smallest possible accelerator. This reaction operating with a thin target can produce a sufficiently soft spectrum to be viable for AB-BNCT. The machines considered are electrostatic single ended or tandem accelerators or radiofrequency quadrupoles plus drift tube Linacs. Conclusions 7Li(p,n)7Be provides one of the best solutions for the production of epithermal neutron beams for deep-seated tumors. However, a Li-based target poses significant technological challenges. Hence, Be has been considered as an alternative target, both in combination with (p,n) and (d,n) reactions. 9Be(d,n)10B at 1.4 MeV, with a thin target has been shown to be a realistic option for the treatment of deep-seated lesions. PMID:26933390

  15. Status of the MAJORANA DEMONSTRATOR experiment

    SciTech Connect

    Martin, R. D.; Abgrall, N.; Chan, Y-D.; Hegai, A.; Mertens, S.; Poon, A. W. P.; Vetter, K.; Aguayo, E.; Fast, J. E.; Hoppe, E. W.; Kouzes, R. T.; LaFerriere, B. D.; Orrell, J. L.; Overman, N. R.; Soin, A.; Avignone III, F. T.; Barabash, A. S.; Konovalov, S. I.; Yumatov, V.; Bertrand, F. E.; and others

    2014-06-24

    The MAJORANA DEMONSTRATOR neutrinoless double beta-decay experiment is currently under construction at the Sanford Underground Research Facility in South Dakota, USA. An overview and status of the experiment are given.

  16. Status of the MAJORANA DEMONSTRATOR experiment

    SciTech Connect

    Martin, R. D.; Abgrall, N.; Aguayo, Estanislao; Avignone, F. T.; Barabash, Alexander S.; Bertrand, F.; Boswell, M.; Brudanin, V.; Busch, Matthew; Caldwell, A. S.; Chan, Yuen-Dat; Christofferson, Cabot-Ann; Combs, Dustin C.; Detwiler, Jason A.; Doe, P. J.; Efremenko, Yuri; Egorov, Viatcheslav; Ejiri, H.; Elliott, S.; Esterline, James H.; Fast, James E.; Finnerty, P.; Fraenkle, Florian; Galindo-Uribarri, A.; Giovanetti, G. K.; Goett, J.; Green, M.; Gruszko, J.; Guiseppe, Vincente; Gusev, K.; Hallin, A. L.; Hazama, R.; Hegai, A.; Henning, R.; Hoppe, Eric W.; Howard, Stanley; Howe, M. A.; Keeter, K.; Kidd, M. F.; Kochetov, Oleg; Konovalov, S.; Kouzes, Richard T.; LaFerriere, Brian D.; Leon, Jonathan D.; Leviner, L.; Loach, J. C.; MacMullin, J.; MacMullin, S.; Mertens, S.; Mizouni, Leila; Nomachi, Masaharu; Orrell, John L.; O'Shaughnessy, Mark D.; Overman, Nicole R.; Phillips, David; Poon, Alan; Pushkin, K.; Radford, D. C.; Rielage, Keith; Robertson, R. G. H.; Romero-Romero, E.; Ronquest, M. C.; Schubert, Alexis G.; Shanks, B.; Shima, T.; Shirchenko, M.; Snavely, Kyle J.; Snyder, N.; Soin, Aleksandr; Suriano, Anne-Marie; Thompson, J.; Timkin, V.; Tornow, W.; Varner, R. L.; Vasilyev, Sergey; Vetter, Kai; Vorren, Kris R.; White, Brandon R.; Wilkerson, J. F.; Xu, W.; Yakushev, E.; Young, A.; Yu, Chang-Hong; Yumatov, Vladimir

    2014-07-08

    The MAJORANA DEMONSTRATOR neutrinoless double beta-decay experiment is currently under construction at the Sanford Underground Research Facility in South Dakota, USA. An overview and status of the experiment are given.

  17. Status of the APEX experiment

    NASA Astrophysics Data System (ADS)

    Franklin, Gregg; Essig, Rouven; Schuster, Philip; Toro, Natalia; Wojtsekhowski, Bogdan; APEX Collaboration

    2015-04-01

    The A' EXperiment (APEX) will search for a new vector boson, A', with weak coupling α ' 6 ×10-8 α to electrons (α =e2 / 4 π) in the mass range 65 MeV experiment will achieve very good sensitivity because the statistics of e+e- pairs will be ~ 10 , 000 times larger in the explored mass range than any previous search for the A' boson. This talk will discuss the experiment and present the results of a pilot run.

  18. TAIGA experiment: present status and perspectives

    NASA Astrophysics Data System (ADS)

    Budnev, N.; Astapov, I.; Bezyazeekov, P.; Boreyko, V.; Borodin, A.; Brückner, M.; Chiavassa, A.; Gafarov, A.; Grebenyuk, V.; Gress, O.; Gress, T.; Grinyuk, A.; Grishin, O.; Dyachok, A.; Fedorov, O.; Haungs, A.; Horns, D.; Huege, T.; Ivanova, A.; Kalmykov, N.; Kazarina, Y.; Kindin, V.; Kiryuhin, S.; Kokoulin, R.; Kompaniets, K.; Kostunin, D.; Korosteleva, E.; Kozhin, V.; Kravchenko, E.; Kunnas, M.; Kuzmichev, L.; Lemeshev, Yu.; Lenok, V.; Lubsandorzhiev, B.; Lubsandorzhiev, N.; Mirgazov, R.; Mirzoyan, R.; Monkhoev, R.; Nachtigall, R.; Osipova, E.; Pakhorukov, A.; Panasyuk, M.; Pankov, L.; Poleschuk, V.; Popesku, M.; Popova, E.; Porelli, A.; Postnikov, E.; Prosin, V.; Ptuskin, V.; Petrukhin, A.; Pushnin, A.; Rjabov, E.; Rubtsov, G.; Sagan, Y.; Samoliga, V.; Semeney, Yu.; Sidorenkov, A.; Schröder, F.; Silaev, A.; Silaev (junior, A.; Skurikhin, A.; Slunecka, M.; Sokolov, A.; Spiering, C.; Sveshnikova, L.; Tabolenko, V.; Tarashansky, B.; Tkachenko, A.; Tkachev, L.; Tluczykont, M.; Wischnewski, R.; Yashin, I.; Zagorodnikov, A.; Zhurov, D.; Zurbanov, V.

    2017-08-01

    The TAIGA observatory addresses ground-based gamma-ray astronomy at energies from a few TeV to several PeV, as well as cosmic ray physics from 100 TeV to several EeV . TAIGA will be located in the Tunka valley, ~ 50 km West from Lake Baikal. The different detectors of the TAIGA will be grouped in 6 arrays to measure Cherenkov and radio emission as well as electron and muon components of atmospheric showers. The combination of the wide angle Cherenkov detectors of the TAIGA-HiSCORE array and the 4-m Imaging Atmospheric Cherenkov Telescopes of the TAIGA-IACT array with their FoV of 10×10 degrees and underground muon detectors offers a very cost effective way to construct a 5 km2 array for gamma-ray astronomy.

  19. Present status of the ALTO project

    SciTech Connect

    Verney, D.

    2007-05-22

    The Institute of Nuclear Physics of Orsay has built in the Tandem building an ISOL device based on photofission induced by a 50-MeV electron-beam : ALTO (Accelerateur Lineaire aupres du Tandem d'Orsay). The project has been dimensioned to obtain 1011 fissions/s inside an UCx target. The objective of this facility is twofold: ensure the development of the physics with beams at extraction-energy of fission products and to serve as a test bench for certain aspects of the R and D for the SPIRAL2 project. The first electron beam has been extracted from the LINAC in december 2005 and a UCx-target/ion-source ensemble has been irradiated for the first time in june 2006. The effective yields of the non-refractory fission fragments after extraction and mass separation have been measured during this experiment and are similar to the calculated predictions.

  20. The Transuranium Elements - Present Status: Nobel Lecture

    DOE R&D Accomplishments Database

    Seaborg, G. T.

    1951-12-12

    The discovery of the transuranium elements and the work done on them up to the present time are reviewed. The properties of these elements, their relationship to other elements, their place in the periodic table, and the possibility of production and identification of other transuranium elements are discussed briefly.

  1. Present status of the ALTO project

    NASA Astrophysics Data System (ADS)

    Verney, D.

    2007-05-01

    The Institute of Nuclear Physics of Orsay has built in the Tandem building an ISOL device based on photofission induced by a 50-MeV electron-beam : ALTO (Accélérateur Linéaire auprès du Tandem d'Orsay). The project has been dimensioned to obtain 1011 fissions/s inside an UCx target. The objective of this facility is twofold : ensure the development of the physics with beams at extraction-energy of fission products and to serve as a test bench for certain aspects of the R&D for the SPIRAL2 project. The first electron beam has been extracted from the LINAC in december 2005 and a UCx-target/ion-source ensemble has been irradiated for the first time in june 2006. The effective yields of the non-refractory fission fragments after extraction and mass separation have been measured during this experiment and are similar to the calculated predictions.

  2. Fipronil Compound Consumption Presenting as Status Epilepticus

    PubMed Central

    Bharathraj, M. Y; Venugopal, K; Jaligidad, Kadappa; Karibasappa, Halli; Kumar, Hemantha

    2015-01-01

    Fipronil is a broadspectrum N-phenylpyrazole insecticide with gamma-aminobutyric acid type A receptor inhibitory action causing hyperexcitability of central nervous system. There is no literature reported in the past concerning its acute toxicity in human beings. A case report is useful for workers in medical and veterinary field. Hence, we are reporting a case in which young male intoxicated with fipronil compound was presented to the emergency department for having generalized tonic-clonic seizures and subsequently with the features of delirium for few days. This patient was treated with benzodiazepines which controlled the seizures and antipsychotics were given for few days for treating the psychosis. PMID:26862281

  3. THE PRESENT STATUS OF ABDOMINAL FASCIAL TRANSPLANTS

    PubMed Central

    Lowman, C. L.

    1949-01-01

    In recent years improvements have been made in techniques for transplanting fascia into the muscles of the abdomen to take over the function of paralyzed muscles. The techniques are described in this presentation. Since muscular coordination of pelvis and thorax plays an important part in control of the extremities, better methods of placing transplants across the abdomen to link these regions offer, coincidentally, the benefit of better use of muscles in the arms and legs. If done early and skillfully, abdominal fascial transplants and allied transplants not only aid in restoring function but often prevent deformities. PMID:18149114

  4. Status of the AMoRE experiment

    NASA Astrophysics Data System (ADS)

    Jo, Hyon-Suk; AMoRE Collaboration

    2017-09-01

    The goal of the Advanced Mo-based Rare process Experiment (AMoRE) is to search for neutrinoless double beta decay of 100Mo using low-temperature detectors consisting of molybdenum-based scintillating crystals read out via metallic magnetic calorimeters. Simultaneous measurements of heat and light signals are performed at mK temperatures, which are reached by using a dilution refrigerator. A pilot experiment, named AMoRE-Pilot, using five 100Mo-enriched, 48Ca-depleted 40Ca100MoO4 crystals with a total mass of about 1.5 kg, has been running in the 700-m-deep YangYang underground Laboratory. The current setup and status of the AMoRE experiment are presented.

  5. Ranger telerobotic shuttle experiment: a status report

    NASA Astrophysics Data System (ADS)

    Gefke, Gardell; Carignan, Craig R.; Roberts, Brian E.; Lane, J. Corde

    2002-02-01

    This paper presents an update on the Ranger Telerobotic Shuttle Experiment (RTSX) and associated key robotics technologies within the Ranger program. Ranger TSX will operate from a Spacelab logistics pallet inside the cargo bay of the shuttle and will demonstrate space station and on-orbit servicing operations including extravehicular (EVA) worksite setup, an orbital replacement unit (ORU) exchange, and various task board experiments. The flight system will be teleoperated from the middeck inside the shuttle as well as from a ground control station at NASA Johnson Space Center. This paper addresses the technical and programmatic status of the flight experiment and describes progress on the engineering test unit, Ranger Neutral Buoyancy Vehicle II (RNBVII), currently in fabrication. Also described are associated technologies, which support this effort. These include a flight robot mockup built to practice EVA stowage and Ranger NBV I, a free-flight prototype vehicle.

  6. [Present status of treatment in nasopharyngeal carcinoma?].

    PubMed

    Beckmann, Gabriele; Flentje, Michael

    2003-05-01

    Review of the evolution of combined treatment strategies in nasopharyngeal carcinoma. Radiotherapy is accepted standard for treatment of nasopharyngeal cancer. Nevertheless, there is no uniform opinion with regard to doses, fractionation, technique or use of systemic chemotherapy. It is hardly possible to compare the results of recent and historical trials because of different staging systems and because nasopharyngeal cancer occurring in the Oceano-Asian region are biologically different to those in Western countries. Conclusions drawn from former, mostly retrospective analyses are not applicable to newer standards regarding the developments in diagnostics and therapy. Presently simultaneous chemoradiotherapy is standard for lymph node positive nasopharyngeal cancer. It will be necessary to treat patients with different histologic subtypes with an uniform treatment schedule to define the place of combined modality treatment. This will probably be the only way to develop treatment concepts for distinct stages and biological entities.

  7. Satellite Ocean Color: Present Status, Future Challenges

    NASA Technical Reports Server (NTRS)

    Gregg, Watson W.; McClain, Charles R.; Zukor, Dorothy J. (Technical Monitor)

    2001-01-01

    We are midway into our 5th consecutive year of nearly continuous, high quality ocean color observations from space. The Ocean Color and Temperature Scanner/Polarization and Directionality of the Earth's Reflectances (OCTS/POLDER: Nov. 1996 - Jun. 1997), the Sea-viewing Wide Field-of-view Sensor (SeaWiFS: Sep. 1997 - present), and now the Moderate Resolution Imaging Spectrometer (MODIS: Sep. 2000 - present) have and are providing unprecedented views of chlorophyll dynamics on global scales. Global synoptic views of ocean chlorophyll were once a fantasy for ocean color scientists. It took nearly the entire 8-year lifetime of limited Coastal Zone Color Scanner (CZCS) observations to compile seasonal climatologies. Now SeaWIFS produces comparably complete fields in about 8 days. For the first time, scientists may observe spatial and temporal variability never before seen in a synoptic context. Even more exciting, we are beginning to plausibly ask questions of interannual variability. We stand at the beginning of long-time time series of ocean color, from which we may begin to ask questions of interdecadal variability and climate change. These are the scientific questions being addressed by users of the 18-year Advanced Very High Resolution Radiometer time series with respect to terrestrial processes and ocean temperatures. The nearly 5-year time series of ocean color observations now being constructed, with possibilities of continued observations, can put us at comparable standing with our terrestrial and physical oceanographic colleagues, and enable us to understand how ocean biological processes contribute to, and are affected by global climate change.

  8. Status of the SOX experiment

    NASA Astrophysics Data System (ADS)

    Maricic, Jelena; SOX/Borexino Collaboration Collaboration

    2016-09-01

    Observation of the oscillation pattern as a function of distance from the neutrino source will provide a very strong argument in favor of neutrino mixing with sterile neutrinos and their existence. SOX experiment will perform such measurement. A strong antineutrino generator 144Ce-144Pr (CeANG) with the activity between 3.7-5.5 PBq will be placed below the Borexino detector, measuring the electron antineutrino rate and spectrum as a function of distance from the generator. Borexino is a large 300 ton detector located at the Gran Sasso national laboratory in Italy. The antineutrino generator will be placed under the detector in a dedicated pit providing the continuous oscillation sampling distance from 4 - 12 m. The CeANG will be produced at a dedicated facility called Mayak in Russia, while the 2.2 ton tungsten shield has been produced at the Xiamen company in China. Details of the experiment, source production and sensitivity to neutrino oscillations in SOX will be presented. The project is made possible thanks to DOE, NSF, INFN, and several others.

  9. Primary energy: Present status and future perspectives

    NASA Astrophysics Data System (ADS)

    Thielheim, K. O.

    A survey of the base-load energy sources available to humans is presented, starting from the point of view that all energy used is ultimately derived from nuclear processes within the sun. Specific note is made of European energy options, noting the large dependence on imported oil. Detailed exploration of available nuclear fuel resources is carried out, with attention given to fission, fusion, and breeder reactor plants and to the state-of-the-art and technology for each. The problems of nuclear waste disposal are discussed, and long term burial in salt domes is outlined as a satisfactory method of containing the materials for acceptable periods of time. The CO2-greenhouse effect hazards caused by increased usage of coal-derived fuels are considered and precautions to be taken on a global scale to ameliorate the warming effects are recommended. The limitations to hydropower are examined, as are those of tidal power. Solar cells are projected to be produced in GW quantities by the year 2000, while wind-derived electricity is predicted to provide a minimum of 5% of the world energy needs in the future.

  10. Status of the PAPPA experiment

    NASA Technical Reports Server (NTRS)

    Kogut, Alan

    2006-01-01

    The Primordial Anisotropy Polarization Pathfinder Array (PAPPA) is a balloonborne instrument to measure the polarization of the cosmic microwave background and search for the signature of primordial gravity waves. PAPPA uses a novel marriage of RF phase modulation and millimeter-wave bolometric detectors to produce a "polarimeter-on-a-chip" capable of simultaneously measuring the Stokes I, Q, and U parameters on the sky. I will discuss the current status and future plans for PAPPA.

  11. Status of the PAPPA experiment

    NASA Technical Reports Server (NTRS)

    Kogut, Alan

    2006-01-01

    The Primordial Anisotropy Polarization Pathfinder Array (PAPPA) is a balloonborne instrument to measure the polarization of the cosmic microwave background and search for the signature of primordial gravity waves. PAPPA uses a novel marriage of RF phase modulation and millimeter-wave bolometric detectors to produce a "polarimeter-on-a-chip" capable of simultaneously measuring the Stokes I, Q, and U parameters on the sky. I will discuss the current status and future plans for PAPPA.

  12. Status and Perspectives of the COBRA Experiment

    NASA Astrophysics Data System (ADS)

    Wonsak, Björn

    COBRA is a neutrinoless double beta decay (0νββ) experiment using an array of Cadmium-Zinc-Telluride semiconductor detectors, the isotope of interest being 116Cd with a Q-value of 2814 keV. To investigate the experimental challenges of operating CdZnTe detectors in low background mode and to identify potential background components, a demonstrator setup is operated at the Gran Sasso underground laboratory (LNGS) in Italy, while additional studies are proceeding in surface laboratories. The experiment consists of monolithic, calorimetric detectors of coplanar grid design (CPG de- tectors). These detectors have a size of 1×1×1 cm3 and are arranged in four layers of 4×4 detectors. An overview of the current status and of future perspectives is given. Results of pulse shape analyses are presented as well as background estimates using the data collected so far.

  13. Status of neutrino mass experiments

    SciTech Connect

    Fackler, O.

    1985-12-01

    In 1980 two experiments ignited a fertile field of research the determination of the neutrino masses. Subsequently, over 35 experiments using a variety of techniques have probed or are probing this question. Primarily I will discuss electron antineutrino (hereafter referred to as neutrino) mass experiments. However, let me begin in Section I to discuss astronomical and terrestrial observations which motivated these experiments. In Section II, I will quote limits from muon and tau mass determinations. These limits are more thoroughly discussed in other papers. I will continue by describing the four approaches used to measure the electron neutrino mass. In Section III, tritium beta decay mass determinations will be reviewed. This section includes a general summary of previous experimental results, and discussion of the major ongoing experiments. Section IV offers concluding remarks. 24 refs., 24 figs.

  14. Nucleon decay experiments: status and prospects

    SciTech Connect

    Ayres, D.S.; Beier, E.W.; D'Ettorre Piazzoli, B.; Ernwein, J.; Gaisser, T.K.; Seidel, S.; Sulak, L.R.

    1986-01-01

    We survey the current status and future prospects of experiments to search for nucleon decay. Results from current experiments are summarized, and the background rejection capabilities of various techniques are described. We discuss the prospects for improved sensitivity in the new experiments that are now coming into operation, and the opportunities for the next generation of detectors. 33 refs., 2 figs., 4 tabs.

  15. Status of the MUNU experiment

    NASA Astrophysics Data System (ADS)

    Jonkmans, G.

    1999-05-01

    The MUNU experiment, a low background 1 m 3 time projection chamber surrounded by active anti-Compton shielding, is now under way at the Bugey nuclear reactor. It is dedicated to the experimental study of overlineνee - scattering down to 500 keV. The experiment is sensitive to a overlineνe magnetic moment down to 3 × 10 -11 Bohr magneton.

  16. Status of the Nab Experiment

    NASA Astrophysics Data System (ADS)

    Bowman, J. David

    2016-09-01

    The Nab experiment seeks to measure the electron-neutrino correlation coefficient, a, with a fractional uncertainty of .001. The experiment is now preparing for installation on the Fundamental Physics Beamline at ORNL-SNS. The angle between the electron and neutrino is reconstructed from the recoil proton time of flight in a magnetic field expansion spectrometer. I will review the principles of operation of the spectrometer, discuss the progress towards installation, and review the statistical and systematic uncertainty budgets.

  17. Status of the Borexino solar neutrino experiment

    NASA Astrophysics Data System (ADS)

    Maneira, J. C.

    2000-12-01

    Borexino is a new real-time detector for low energy solar neutrinos presently in construction at the Gran Sasso underground laboratory in Italy. The low energy threshold and the low radioactive background rate required for the detection of neutrinos below 1 MeV determines the choice of using liquid scintillator as the detection medium. Several tests on scintillator radiopurity and on various techniques to be used in Borexino were performed in CTF, a prototype detector installed in Gran Sasso. By performing the first real-time measurement of low energy solar neutrinos, Borexino will supply new information contributing to the solution of the Solar Neutrino Problem. In this paper, the goals, techniques and status of the Borexino experiment are presented, as well as the program for calibrations and monitoring of the detector.

  18. Status of the Picasso Experiment

    NASA Astrophysics Data System (ADS)

    Wichoski, Ubi

    2012-08-01

    The PICASSO experiment searches for cold dark matter through the direct detection of weakly interacting massive particles (WIMPs) via their spin-dependent interactions with fluorine at SNOLAB, Sudbury - ON, Canada. The detection principle is based on the superheated droplet technique; the detectors consist of a gel matrix with millions of liquid droplets of superheated fluorocarbon (C4F10) dispersed in it. The experiment has been taking data using 4.5-litre detector modules with approximately 80g of active mass per module. In this talk we will give an overview of the experiment, discuss the progress on the understanding of the superheated droplet technique and report on recent developments and future plans.

  19. Our Profession: Present Status and Future Directions. Northeast Conference Reports.

    ERIC Educational Resources Information Center

    Geno, Thomas H., Ed.

    The following reports on the status of and prospects for foreign language teaching in the United States are included: (1) "Present Status of Foreign Language Teaching: A Northeast Conference Survey" by Peter A. Eddy; (2) "Toward an Articulated Curriculum" by Robert C. Lafayette; (3) "Competence in a Foreign Language: A Valuable Adjunct Skill in…

  20. Status of the neutrino mass experiment KATRIN

    SciTech Connect

    Bornschein, L.; Bornschein, B.; Sturm, M.; Roellig, M.; Priester, F.

    2015-03-15

    The most sensitive way to determine the neutrino mass scale without further assumptions is to measure the shape of a tritium beta spectrum near its kinematic end-point. Tritium is the nucleus of choice because of its low endpoint energy, superallowed decay and simple atomic structure. Within an international collaboration the Karlsruhe Tritium Neutrino experiment (KATRIN) is currently being built up at KIT. KATRIN will allow a model-independent measurement of the neutrino mass scale with an expected sensitivity of 0.2 eV/c{sup 2} (90% CL). KATRIN will use a source of ultrapure molecular tritium. This contribution presents the status of the KATRIN experiment, thereby focusing on its Calibration and Monitoring System (CMS), which is the last component being subject to research/development. After a brief overview of the KATRIN experiment in Section II the CMS is introduced in Section III. In Section IV the Beta Induced X-Ray Spectroscopy (BIXS) as method of choice to monitor the tritium activity of the KATRIN source is described and first results are presented.

  1. Status of the MUNU experiment

    NASA Astrophysics Data System (ADS)

    Broggini, C.

    1999-01-01

    We built a low background detector based on a 1 m3 time projection chamber surrounded by an active anti-Compton shielding. The detector has been installed near a nuclear reactor in Bugey for the experimental study of the overlinevee - scattering. A low threshold, around 500 keV, can be set on the electron recoil energy, giving the experiment a sensitivity to the overlineve magnetic moment down to 3·10 -11 Bohr magnetons.

  2. Overview and Status of the OLYMPUS Experiment

    NASA Astrophysics Data System (ADS)

    Russell, Rebecca

    2012-03-01

    Analysis via Rosenbluth separation of elastic electron-proton scattering has long yielded the ratio of the electric and magnetic form factors (GE/GM) to be constant as a function of Q^2. More recent studies using polarized beams, extracting GE/GM through the polarization transfer technique, show it to decrease linearly with Q^2. It is suspected that two-photon exchange processes explain the observed discrepancy, though theoretical calculations vary dramatically. OLYMPUS measures the two-photon contribution by studying the ratio of the cross section for electron-proton scattering to positron-proton scattering using DORIS at DESY. With multi-GEV beam energies and >100 mA current on an internal hydrogen gas target, OLYMPUS will be able to precisely measure two-proton exchange for 0.5<=Q^2<=2.5 GeV^2. An update of the status of the experiment, and its 2012 data run, will be presented.

  3. Status of the OPERA experiment

    SciTech Connect

    Russo, A.

    2011-11-23

    The OPERA experiment in the underground Gran Sasso Laboratory (LNGS) has been designed to perform the first detection of neutrino oscillations in direct appearance mode in the muon to tau neutrino channel. The detector is hybrid, being made of an emulsion/lead target and of electronic detectors. It is placed in the CNGS neutrino beam 733 km away from the neutrino source. Runs with CNGS neutrinos were successfully carried out from 2008 and the following years. The analysis of a sample of events corresponding to 1.89x10{sup 19} p.o.t. in the CERN CNGS {nu}{sub {mu}} beam yielded the observation of a first candidate {nu}{sub {tau}} CC interaction. The topology and kinematics of this candidate event is described in detail. The background sources are explained and the significance of the observation of the first {nu}{sub {tau}} event candidate is assessed.

  4. Status of the OPERA experiment

    NASA Astrophysics Data System (ADS)

    Russo, A.

    2011-11-01

    The OPERA experiment in the underground Gran Sasso Laboratory (LNGS) has been designed to perform the first detection of neutrino oscillations in direct appearance mode in the muon to tau neutrino channel. The detector is hybrid, being made of an emulsion/lead target and of electronic detectors. It is placed in the CNGS neutrino beam 733 km away from the neutrino source. Runs with CNGS neutrinos were successfully carried out from 2008 and the following years. The analysis of a sample of events corresponding to 1.89×1019 p.o.t. in the CERN CNGS νμ beam yielded the observation of a first candidate ντ CC interaction. The topology and kinematics of this candidate event is described in detail. The background sources are explained and the significance of the observation of the first ντ event candidate is assessed.

  5. Status of the new muon (g - 2) experiment.

    SciTech Connect

    Carey, R. M.; Earle, W.; Efstathiadis, E.; Hare, M. F.; MUON Collaboration; Nodulman, L.; Roberts, B. L.

    1999-05-03

    The new muon (g - 2) experiment is now fully operational The goal of the experiment is to obtain a relative error on (g - 2) of {+-}O.35 ppm to measure the electroweak contribution for the first time, and to observe, or place stringent limits on physics beyond the standard model which can contribute to (g - 2). A brief status report is presented.

  6. Present status of spin frozen deuteron target at KEK

    SciTech Connect

    Hiramatsu, S.; Isagawa, S.; Ishimoto, S.; Masaike, A.; Morimoto, K.

    1983-01-01

    Brief report on the present status of a spin frozen deuteron target at KEK is presented. Deuterons in fully deterated propanediol (D-8) with EHBA-Cr/sup v/ complex were polarized up to 40% in a high cooling power dilution refrigerator which was installed in a large aperture spectrometer. 4 references, 5 figures.

  7. Status Cataplecticus as Initial Presentation of Late Onset Narcolepsy

    PubMed Central

    Panda, Samhita

    2014-01-01

    Narcolepsy, one of the important causes of hypersomnia, is an under diagnosed sleep disorder. It has a bimodal age of onset around 15 and 35 years. It is characterized by the tetrad of excessive daytime sleepiness, cataplexy, hypnagogic/ hypnopompic hallucinations, and sleep paralysis. Cataplexy is by far the most predictive feature of narcolepsy. Status cataplecticus is the occurrence of cataplexy repeatedly for hours or days, a rare presentation of narcolepsy. This report describes an elderly gentleman with late onset narcolepsy in the sixth decade of life presenting with initial and chief symptom of status cataplecticus. Citation: Panda S. Status cataplecticus as initial presentation of late onset narcolepsy. J Clin Sleep Med 2014;10(2):207-209. PMID:24533005

  8. Occupational Status and the Experience of Anger

    ERIC Educational Resources Information Center

    Collett, Jessica L.; Lizardo, Omar

    2010-01-01

    Current theories in the sociology of emotions posit contradictory expectations regarding the relationship between status and the relative experience of anger, with some predicting a negative relationship and others proposing a positive one. We test the compatibility of these opposing hypotheses by examining the relationship between anger and a key…

  9. Status cataplecticus as initial presentation of late onset narcolepsy.

    PubMed

    Panda, Samhita

    2014-02-15

    Narcolepsy, one of the important causes of hypersomnia, is an under diagnosed sleep disorder. It has a bimodal age of onset around 15 and 35 years. It is characterized by the tetrad of excessive daytime sleepiness, cataplexy, hypnagogic/ hypnopompic hallucinations, and sleep paralysis. Cataplexy is by far the most predictive feature of narcolepsy. Status cataplecticus is the occurrence of cataplexy repeatedly for hours or days, a rare presentation of narcolepsy. This report describes an elderly gentleman with late onset narcolepsy in the sixth decade of life presenting with initial and chief symptom of status cataplecticus.

  10. Status of the microwave inverse FEL experiment

    NASA Astrophysics Data System (ADS)

    Yoder, R. B.; Marshall, T. C.; Wang, Mei; Hirshfield, J. L.

    1999-07-01

    A status report is presented on an inverse free-electron-laser accelerator experiment operating in the microwave regime (1). This proof-of-principle electron accelerator is powered by up to 15 MW of RF power at 2.86 GHz, which propagates in a smooth-walled circular waveguide surrounded by a pulsed bifilar helical undulator: solenoids provide an axial guiding magnetic field. Undulator pitch, which is initially 11.75 cm, is up-tapered to 13.5 cm over the 1-meter length of the structure to maintain acceleration gradient. Numerical computations predict an energy gain of 0.7 MeV using a 6 MeV injected beam from a 2-1/2 cell RF gun, with small energy spread and strong phase trapping. The maximum attainable acceleration gradient with such a design, using 150 MW of RF power at 34 GHz, is estimated to be at least 30 MV/m. Results from bench tests of the structure and undulator are presented, along with preliminary beam measurements.

  11. Status of the TOTEM experiment at LHC

    NASA Astrophysics Data System (ADS)

    Baechler, J.; Antchev, G.; Aspell, P.; Atanassov, I.; Avati, V.; Berardi, V.; Berretti, M.; Bossini, E.; Bozzo, M.; Brogi, P.; Brücken, E.; Buzzo, A.; Cafagna, F.; Calicchio, M.; Catanesi, M. G.; Covault, C.; Csörgő, T.; Deile, M.; Eggert, K.; Eremin, V.; Ferretti, R.; Ferro, F.; Fiergolski, A.; Garcia, F.; Giani, S.; Greco, V.; Grzanka, L.; Heino, J.; Hilden, T.; Intonti, M. R.; Kašpar, J.; Kopal, J.; Kundrát, V.; Kurvinen, K.; Lami, S.; Latino, G.; Lauhakangas, R.; Leszko, T.; Lippmaa, E.; Lokajíček, M.; Lo Vetere, M.; Lucas Rodríguez, F.; Macrí, M.; Magaletti, L.; Mercadante, A.; Minafra, N.; Minutoli, S.; Nemes, F.; Niewiadomski, H.; Oliveri, E.; Oljemark, F.; Orava, R.; Oriunno, M.; Österberg, K.; Palazzi, P.; Procházka, J.; Quinto, M.; Radermacher, E.; Radicioni, E.; Ravotti, F.; Robutti, E.; Ropelewski, L.; Ruggiero, G.; Saarikko, H.; Sanguinetti, G.; Santroni, A.; Scribano, A.; Snoeys, W.; Sziklai, J.; Taylor, C.; Turini, N.; Vacek, V.; Vítek, M.; Welti, J.; Whitmore, J.

    2013-08-01

    The TOTEM experiment is dedicated to the measurement of the total proton-proton cross-section with the luminosity-independent method and the study of elastic and diffractive scattering processes. Two tracking telescopes, T1 and T2, integrated in the CMS detector, cover the pseudo-rapidity region between 3.1 and 6.5 on both sides of the interaction point IP5. The Roman Pot (RP) stations are located at distances of ±147 m and ±220 m with respect to the interaction point to measure the very forward scattered protons at very small angles. During the LHC technical stop in winter 2010/2011, the TOTEM experiment was completed with the installation of the T1 telescope and the RP stations at ±147 m. In 2011, the LHC machine provided special optics with the large ß*=90 m, allowing TOTEM to measure the elastic scattering differential cross-section, down to the four-momentum transfer squared |t|=2×10-2 GeV2. Using the optical theorem and extrapolation of the differential cross-section to t=0 (optical point), the total p-p cross-section at the LHC energy of √{ s} = 7 TeV could be computed for the first time. Furthermore we measured with standard LHC beam optics and the energy of √{ s} = 7 TeV the forward charged particle pseudorapidity density dn/dη in the range of 5.3<|η|<6.4. The status of the experiment, the performance of the detectors with emphasis on the RPs are described and the first physics results are presented.

  12. Present Status of Power Circuit Breaker and its Future

    NASA Astrophysics Data System (ADS)

    Yoshioka, Yoshio

    Gas circuit breaker and vacuum circuit breaker are the 2 main types of circuit breaker used in extra high voltage and medium voltage networks. After reviewing the history of these circuit breakers, their present status and technologies are described. As for future technology, computation of interrupting phenomena, SF6 gas less apparatus and expectation of the high voltage vacuum circuit breaker are discussed.

  13. The status of the PAMELA experiment

    NASA Astrophysics Data System (ADS)

    Pearce, M.

    The PAMELA experiment will be launched on-board of a polar orbiting Resurs DK1 satellite in mid-2003. The primary objective of PAMELA is to measure the flux of antiprotons (80 MeV - 190 GeV) and positrons (50 MeV - 270 GeV) in the cosmic radiation. The wide energy range and large statistics (O(10 4) antiprotons and O(10 5) positrons) will allow sensitive tests of cosmic ray propagation models and searches for exotic sources of antiparticles, such as cold dark matter neutralino annihilations. PAMELA is built around a permanent magnet spectrometer equipped with double-sided silicon detectors and surrounded by an active veto shield. This is complemented by a proportional straw tube / carbon fibre radiator transition radiation detector and a silicon-tungsten imaging calorimeter which is augmented by a scintillator shower tail catcher. A time-of-flight system provides the primary experimental trigger. The status of PAMELA is presented along with main results from simulations and test-beam studies.

  14. Bupropion Overdose Presenting as Status Epilepticus in an Infant.

    PubMed

    Rivas-Coppola, Marianna S; Patterson, Amy L; Morgan, Robin; Wheless, James W

    2015-09-01

    Bupropion is a monocyclic antidepressant in the aminoketone class, structurally related to amphetamines. The Food and Drug Administration withdrew this product from the market in 1986 after seizures were reported in bulimic patients. It was later reintroduced in 1989 when the incidence of seizures was shown to be dose-related in the immediate release preparation. Massive bupropion ingestion has been associated with status epilepticus and cardiogenic shock in adults. Seizures have been reported in children, but not status epilepticus. This report highlights a patient who presented with status epilepticus and developed cardiopulmonary arrest after bupropion ingestion. False-positive amphetamine diagnosis from urine drug screen on presentation was reported. We review the presentation, clinical course, diagnostic studies, and outcome of this patient. We then review the literature regarding bupropion overdose in children. Symptoms of bupropion toxicity and risk for seizures are dose-dependent and fatalities have been reported. Our patient developed status epilepticus and cardiopulmonary arrest and then progressed to have a hypoxic ischemic encephalopathy and refractory symptomatic partial seizures. Our report highlights the need to keep this medication away from children in order to prevent accidental overdose. Copyright © 2015 Elsevier Inc. All rights reserved.

  15. Status of the OLYMPUS Experiment at DESY

    SciTech Connect

    Kohl, M.

    2011-10-24

    The OLYMPUS experiment at DESY, Hamburg, Germany will definitively determine the effect of two-photon exchange in elastic lepton-proton scattering by precisely measuring the ratio of positron-proton to electron-proton elastic unpolarized cross sections. In this paper, the physics motivation is summarized, aspects of the experimental setup are discussed and the current status and timeline of the project are reviewed.

  16. Status of the NA62 Experiment

    NASA Astrophysics Data System (ADS)

    Palladino, Vito

    2016-04-01

    The rare decays {{{K}}^ + } to {π ^ + }{{ν bar ν }} are excellent processes to make tests of new physics at the highest scale complementary to LHC thanks to their theoretically cleaness. The NA62 experiment at CERN SPS aims to collect of the order of 100 events in two years of data taking, keeping the background at the level of 10%. Part of the experimental apparatus has been commissioned during a technical run in 2012. The physics prospects and the status of the experiment will be reviewed after the commissioning run of 2014 and the data taking in 2015.

  17. The CBM experiment-a status report

    SciTech Connect

    Friese, V.

    2012-05-15

    The CBM experiment is being designed to study strongly interacting matter at high densities with nuclear collisions up to 45 A GeV beam energy at the future FAIR centre. With interaction rates unprecedented in heavy-ion collisions, CBM will give access also to extremely rare probes and thus to the early stage of the collisions, in search for the first-order phase transition from confined to deconfined matter and the QCD critical point. The conceptual design of the experiment is consolidated, and the project has entered the R and D and technical design phase. We report on the project status, putting enphasis on recent progress and developments.

  18. Status of the RED-100 experiment

    NASA Astrophysics Data System (ADS)

    Akimov, D. Yu.; Berdnikova, A. K.; Belov, V. A.; Bolozdynya, A. I.; Burenkov, A. A.; Dolgolenko, A. G.; Efremenko, Yu. V.; Gusakov, Yu. V.; Etenko, A. V.; Kaplin, V. A.; Khromov, A. V.; Konovalov, A. M.; Kovalenko, A. G.; Kozlova, E. S.; Kumpan, A. V.; Krakhmalova, T. D.; Lukyashin, A. V.; Melikyan, Yu. A.; Naumov, P. P.; Nepochataya, O. E.; Rudik, D. G.; Shafigullin, R. R.; Shakirov, A. V.; Simakov, G. E.; Sosnovtsev, V. V.; Taer, G. S.; Tobolkin, A. A.; Tolstukhin, I. A.

    2017-06-01

    The current status of the RED-100 experiment is described. The detector is being prepared for the experiment on the first observation of a coherent elastic neutrino-nucleus scattering at the Kalinin Nuclear Power Plant (Russia). The estimation of the signal event rate for this process has been done by Monte Carlo with the use of the full detector geometry and the modern data on the ionisation yield for nuclear recoils in the liquid xenon. The simulation has shown very promising significant increase of it, by at least a factor of 2, in compare with our previous estimations.

  19. Status of CUORE Experiment and latest results from CUORE-0

    NASA Astrophysics Data System (ADS)

    Pagliarone, C.; Alduino, C.; Alfonso, K.; Artusa, D. R.; Avignone, F. T., III; Azzolini, O.; Banks, T. I.; Bari, G.; Beeman, J. W.; Bellini, F.; Bersani, A.; Biassoni, M.; Brofferio, C.; Bucci, C.; Camacho, A.; Caminata, A.; Canonica, L.; Cao, X. G.; Capelli, S.; Cappelli, L.; Carbone, L.; Cardani, L.; Carniti, P.; Casali, N.; Cassina, L.; Chiesa, D.; Chott, N.; Clemenza, M.; Copello, S.; Cosmelli, C.; Cremonesi, O.; Crewsick, R. J.; Cushman, J. S.; Dafinei, I.; Davis, C. J.; Dell'Oro, S.; Deninno, M. M.; Di Domizio, S.; Di Vacri, M.L.; Drobizhev, A.; Fang, D. Q.; Faverzani, M.; Fernandes, G.; Ferri, E.; Ferroni, F.; Fiorini, E.; Franceschi, M. A.; Freedman, S. J.; Fujikawa, B. K.; Giachero, A.; Gironi, L.; Giuliani, A.; Gladstone, L.; Gorla, P.; Gotti, C.; Gutierrez, T. D.; Haller, E. E.; Han, K.; Hansen, E.; Heeger, K. M.; Hennings-Yeomans, R.; Hickerson, K. P.; Huang, H. Z.; Kadel, R.; Keppel, G.; Kolomensky, Yu. G.; Leder, A.; Ligi, C.; Lim, K. E.; Liu, X.; Ma, Y. G.; Maino, M.; Marini, L.; Martinez, M.; Maruyama, R. H.; Mei, Y.; Moggi, N.; Morganti, S.; Mosteiro, P. J.; Napolitano, T.; Nones, C.; Norman, E. B.; Nucciotti, A.; O'Donnell, T.; Orio, F.; Ouellet, J. L.; Pallavicini, M.; Palmieri, V.; Pattavina, L.; Pavan, M.; Pessina, G.; Pettinacci, V.; Piperno, G.; Pira, C.; Pirro, S.; Pozzi, S.; Previtali, E.; Rosenfeld, C.; Rusconi, C.; Sala, E.; Sangiorgio, S.; Santone, D.; Scielzo, N. D.; Singh,, V.; Sisti, M.; Smith, A. R.; Taffarello, L.; Tenconi, M.; Terranova, F.; Tomei, C.; Trentalange, S.; Ventura, G.; Vignati, M.; Wagaarachchi, S. L.; Wang, B. S.; Wang, H. W.; Wilson, J.; Winslow, L. A.; Wise, T.; Woodcraft, A.; Zanotti, L.; Zhang, G. Q.; Zhu, B. X.; Zimmermann, S.; Zucchelli, S.

    2017-07-01

    Neutrinoless Double Beta Decay (0ν β β) is a rare nuclear transition that if it occurs at all it will be very important for the exploration of the inverted hierarchy region of the neutrino mass pattern. The Cryogenic Underground Observatory for Rare Events (CUORE) is an experiment that aims to search for such a transition in ^{130} Te together with other rare processes. In the present paper we will describe the basic features of CUORE Experiment, the status of the experiment as well as the latest results obtained from CUORE-0 detector, a smaller scale experiment constructed to test and demonstrate the expected performances of CUORE.

  20. Distended Bladder Presenting with Altered Mental Status and Venous Obstruction

    PubMed Central

    Washco, Vaughan; Engel, Lee; Smith, David L.; McCarron, Ross

    2015-01-01

    Background New onset or acute worsening of bilateral lower extremity swelling is commonly caused by venous congestion from decompensated heart failure, pulmonary disease, liver dysfunction, or kidney insufficiency. A thromboembolic event, lymphatic obstruction, or even external compression of venous flow can also be the culprit. Case Report We report the case of an 83-year-old male with a history of myelodysplastic syndrome that progressed to acute myeloid leukemia, bipolar disorder, and benign prostatic hypertrophy. He presented with altered mental status and new onset lower extremity edema caused by acute bladder outflow obstruction. Computed tomography of the abdomen and pelvis showed the patient's distended bladder compressing bilateral external iliac veins. Conclusion Insertion of a Foley catheter resulted in several liters of urine output and marked improvement in his lower extremity edema and mental status a few hours later. Our extensive workup failed to reveal a cause of the patient's acute change in mental status, and we attributed it to a concept known as cystocerebral syndrome. PMID:25829883

  1. Status and Prospects for Hadron Production Experiments

    SciTech Connect

    Schroeter, Raphaeel

    2010-03-30

    The latest results from the HARP, MIPP and NA61 Hadron Production Experiments are reviewed and their implications for neutrinos physics experiments are discussed. We emphasize three neutrino sources: accelerator-based neutrino beams, advanced neutrino sources and atmospheric neutrinos. Finally, prospects from additional forthcoming hadron production measurements are presented.

  2. TOPICAL REVIEW: θ13: phenomenology, present status and prospect

    NASA Astrophysics Data System (ADS)

    Mezzetto, Mauro; Schwetz, Thomas

    2010-10-01

    The leptonic mixing angle θ13 is currently a high-priority topic in the field of neutrino physics, with five experiments under way, searching for neutrino oscillations induced by this angle. We review the phenomenology of θ13 and discuss the information from the present global oscillation data. A description of the upcoming reactor and accelerator experiments searching for a non-zero value of θ13 is given, and we evaluate the sensitivity reach within the next few years.

  3. Emergency presentation and socioeconomic status in colon cancer.

    PubMed

    Gunnarsson, H; Ekholm, A; Olsson, L I

    2013-08-01

    Emergency presentation affects up to every fourth patient with colon cancer, and is associated with worse outcomes. The aim of this study was to investigate any association between socioeconomic status (SES) and mode of presentation in colon cancer. Individually attained data on civil status, education and income were linked to quality registries for colon cancer in two large Swedish regions 1997-2006 (n = 12 293) and analyzed by logistic regression, adjusting for age, sex, stage, region and socioeconomic variables. The frequency of emergency presentation was 23%; 27.8% among patients above the age of 80, and 20.0% among patients aged 70-79 (p < 0.001). There was no difference between men and women (22.6% vs. 23.8%; p = 0.1). Among patients with stage IV colon cancer, 34.6% presented as emergencies. Odds ratio for an emergency presentation in unmarried patients was 1.24 (96% CI 1.04-1.48), and for unmarried patients above the age of 80, OR was 1.45 (95% CI 0.98-2.13). Among patients below the age of 70 with compulsory education only, OR was 1.22 (95% CI 0.98-1.48). For patients within the lowest income quartile (Q1), OR was 1.24 (95% CI 1.04-1.49). This was most pronounced in men (OR 1.34; 95% CI 1.40-1.72), in patients below the age of 70 (OR 1.36; 95% CI 1.02-1.82), and above the age of 80 (OR 1.41; 95% CI 1.00-1.98). Emergency presentation of colon cancer is consistently associated with socioeconomic factors, and this must be considered in efforts aimed at reducing the overall frequency of emergency cases. Copyright © 2013 Elsevier Ltd. All rights reserved.

  4. VGKC antibodies in pediatric encephalitis presenting with status epilepticus.

    PubMed

    Suleiman, J; Brenner, T; Gill, D; Brilot, F; Antony, J; Vincent, A; Lang, B; Dale, R C

    2011-04-05

    Voltage-gated potassium channel antibodies (VGKC Ab) are associated with limbic encephalitis and neuromyotonia in adults. There have been no systematic investigations in children to date. We looked for antibodies that are associated with CNS syndromes in adults including antibodies to VGKCs, NMDARs, glutamic acid decarboxylase (GAD), and glycine receptor (GlyR) in the stored acute serum from 10 children with unexplained encephalitis presenting with encephalopathy and status epilepticus. We also looked for antibodies to leucine-rich glioma-inactivated 1 (Lgi1) and contactin-associated protein-like 2 (Caspr2), which are now known to be tightly complexed with VGKCs in vivo. Sixty-nine pediatric controls were used for comparison. An elevated VGKC Ab (>100 pM) was detected in 4/10 patients with encephalitis compared to only 1/69 controls (p < 0.001). The outcome in the 4 VGKC Ab-positive patients with encephalitis was variable including good recovery (n = 1), cognitive impairment (n = 3), temporal lobe epilepsy (n = 2), and mesial temporal sclerosis (n = 1). No other antibodies were detected, including those to Lgi1 and Caspr2. Encephalitis associated with VGKC Ab occurs in children and presents with status epilepticus and focal epilepsy. These antibodies are not directed against Lgi1 or Caspr2.

  5. Present status of Rare-RI Ring facility at RIBF

    NASA Astrophysics Data System (ADS)

    T Yamaguchithe Rare-RI Ring Collaboration

    2015-11-01

    A new storage ring facility called the Rare-RI Ring is currently under preparation at the RI Beam Factory (RIBF) in RIKEN. The storage ring is dedicated to the single-ion precision mass spectrometry of neutron-rich exotic nuclei. The masses are essential to elucidate the evolution of the nuclear shell structure far from the β stability and to determine the pathway of astrophysical nucleosynthesis. Such exotic nuclei are provided by the large-acceptance superconducting fragment separator, BigRIPS, at the RIBF accelerator complex. The experimental principle of the Rare-RI Ring mass measurements is based on isochronous mass spectrometry combined with the individual injection technique. This novel technique enables exotic species of interest to be produced randomly, in time to be sequentially stored in the storage ring. The Rare-RI Ring facility realizes the most efficient measurements for rare isotopes. An overview of the project is presented, along with its present status.

  6. TOPICAL REVIEW: Present status of the Penrose inequality

    NASA Astrophysics Data System (ADS)

    Mars, Marc

    2009-10-01

    The Penrose inequality gives a lower bound for the total mass of a spacetime in terms of the area of suitable surfaces that represent black holes. Its validity is supported by the cosmic censorship conjecture, and therefore its proof (or disproof) is an important problem in relation with gravitational collapse. The Penrose inequality is a very challenging problem in mathematical relativity and it has received continuous attention since its formulation by Penrose in the early seventies. Important breakthroughs have been made in the last decade or so, with the complete resolution of the so-called Riemannian Penrose inequality and a very interesting proposal to address the general case by Bray and Khuri. In this review, the most important results on this field will be discussed and the main ideas behind their proofs will be summarized, with the aim of presenting what is the status of our present knowledge in this topic.

  7. Early Detection of Fetal Malformation, a Long Distance Yet to Cover! Present Status and Potential of First Trimester Ultrasonography in Detection of Fetal Congenital Malformation in a Developing Country: Experience at a Tertiary Care Centre in India.

    PubMed

    Kashyap, Namrata; Pradhan, Mandakini; Singh, Neeta; Yadav, Sangeeta

    2015-01-01

    Early detection of malformation is tremendously improved with improvement in imaging technology. Yet in a developing country like India majority of pregnant women are not privileged to get timely diagnosis. To assess the present status and potential of first trimester ultrasonography in detection of fetal congenital structural malformations. This was a retrospective observational study conducted at Sanjay Gandhi Postgraduate Institute of Medical Sciences. All pregnant women had anomaly scan and women with fetal structural malformations were included. Out of 4080 pregnant women undergoing ultrasound, 312 (7.6%) had fetal structural malformation. Out of 139 patients who were diagnosed after 20 weeks, 47 (33.8%) had fetal structural anomalies which could have been diagnosed before 12 weeks and 92 (66.1%) had fetal malformations which could have been diagnosed between 12 and 20 weeks. The first trimester ultrasonography could have identified 50% of major structural defects compared to 1.6% in the present scenario. This focuses on the immense need of the hour to gear up for early diagnosis and timely intervention in the field of prenatal detection of congenital malformation.

  8. Early Detection of Fetal Malformation, a Long Distance Yet to Cover! Present Status and Potential of First Trimester Ultrasonography in Detection of Fetal Congenital Malformation in a Developing Country: Experience at a Tertiary Care Centre in India

    PubMed Central

    Kashyap, Namrata; Pradhan, Mandakini; Singh, Neeta; Yadav, Sangeeta

    2015-01-01

    Background. Early detection of malformation is tremendously improved with improvement in imaging technology. Yet in a developing country like India majority of pregnant women are not privileged to get timely diagnosis. Aims and Objectives. To assess the present status and potential of first trimester ultrasonography in detection of fetal congenital structural malformations. Methodology. This was a retrospective observational study conducted at Sanjay Gandhi Postgraduate Institute of Medical Sciences. All pregnant women had anomaly scan and women with fetal structural malformations were included. Results. Out of 4080 pregnant women undergoing ultrasound, 312 (7.6%) had fetal structural malformation. Out of 139 patients who were diagnosed after 20 weeks, 47 (33.8%) had fetal structural anomalies which could have been diagnosed before 12 weeks and 92 (66.1%) had fetal malformations which could have been diagnosed between 12 and 20 weeks. Conclusion. The first trimester ultrasonography could have identified 50% of major structural defects compared to 1.6% in the present scenario. This focuses on the immense need of the hour to gear up for early diagnosis and timely intervention in the field of prenatal detection of congenital malformation. PMID:26759727

  9. Non-convulsive status epilepticus presenting with Wernicke's aphasia.

    PubMed

    Al-Qahtani, Mashael; Khan, Sonia A; Kabiraj, Mohammed; Khoja, Waleed A

    2009-07-01

    Ictal aphasia in adults is a rare phenomenon. Most reported cases manifest with non-fluent (Broca) aphasia. Ictal fluent (Wernicke) aphasia is less common. We report a 47-year-old, right-handed woman that presented with recurrent episodes of non-convulsive seizures in the form of Wernicke's aphasia for 2 weeks. An MRI of the brain showed an old cerebral infarction in the left parieto-occipital area. Scalp EEG revealed continuous periodic sharp waves at the left temporal regions with diffusion to the whole left hemisphere and at occasions to the right. This is followed by variable periods of post ictal slowing. Recurrence of the described ictal pattern was noted. Management of status epilepticus was started in the form of intravenous diazepam and a loading dose of phenytoin and phenobarbitone. After treatment, she improved clinically and the EEG improved with disappearance of the left temporal ictal rhythm and normalization of the EEG background. Thus, establishing the diagnosis of non-convulsive partial status epilepticus manifesting as ictal aphasia.

  10. Present Status of Networking Conditions in Univ. of South Pacific

    NASA Astrophysics Data System (ADS)

    Takahashi, Fujinobu

    Three years program of Japanese Info-Communication Technology (ICT) Capacity Building Project in the University of South Pacific (USP) will terminate in June 2005. Japanese government has a plan of the new Pacific ICT Center program in USP from 2006. The author will introduce the recent status of USP networking conditions both of satellite and marine cable. The present global VLBI (and even GPS/IGS) network has a weak point of asymmetric distribution by very few number or luck of stations in the huge south Pacific/water hemisphere because of many difficulties such as narrow/poor telecommunication line. It is very important and urgent matters to enhance the space geodetic activities in USP.

  11. Present status of refurbishment and irradiation technologies in JMTR

    NASA Astrophysics Data System (ADS)

    Inaba, Yoshitomo; Ishihara, Masahiro; Niimi, Motoji; Kawamura, Hiroshi

    2011-10-01

    The Japan Materials Testing Reactor (JMTR) of the Japan Atomic Energy Agency is a testing reactor for various neutron irradiation tests on nuclear fuels and materials, as well as for radioisotope production. The operation of JMTR stopped temporarily in August 2006 for refurbishment and improvement. The renewed JMTR will resume operation in Japanese fiscal year 2011. The renewal of aged reactor components, the preparation of new irradiation facilities, and the development of irradiation technologies have been carried out for the resumption of the new JMTR. The new JMTR with the new irradiation facilities and the irradiation technologies will be utilized for the research and development of fission and fusion reactor fuels and materials. This paper describes the present status of the refurbishment and the irradiation technologies focused on instrumentation such as the multi-paired thermocouple which is applicable to irradiation temperature control and a ceramic oxygen sensor in JMTR.

  12. Status of advanced carbide fuels: Past, present, and future

    NASA Astrophysics Data System (ADS)

    Anghaie, Samim; Knight, Travis

    2002-01-01

    Solid solution, mixed uranium/refractory metal carbide fuels such as (U, Zr, Nb)C, so called ternary carbide or tri-carbide fuels have great potential for applications in next generation advanced nuclear power reactors. Because of their high melting points, high thermal conductivity, improved resistance to hot hydrogen corrosion, and good fission product retention, these advanced nuclear fuels have great potential for high performance reactors with increased safety margins. Despite these many benefits, some concerns regarding carbide fuels include compatibility issues with coolant and/or cladding materials and their endurance under the extreme conditions associated with nuclear thermal propulsion. The status of these fuels is reviewed to characterize their performance for space nuclear power applications. Results of current investigations are presented and as well as future directions of study for these advanced nuclear fuels. .

  13. CRUDE OIL BIOREMEDIATION: THE AMERICAN EXPERIENCE (PRESENTATION)

    EPA Science Inventory

    This is a state-of-the-art extended abstract presentation summary of the outputs from the oil spill program over the last 11 years. It summarizes the results of 3 field studies involving intentional releases of crude oil: the Delaware study in 1994 (sandy beach), the St. Lawrence...

  14. Status and prospects of the SNO+ experiment

    NASA Astrophysics Data System (ADS)

    Maneira, J.

    2016-05-01

    The SNO+ experiment is located at the SNOLAB underground laboratory and will employ 780 tons of liquid scintillator loaded, in its initial phase, with 800 kg of 130Te (0.3% by mass) for a low-background and high-isotope-mass search for neutrino-less double beta decay. SNO+ reuses the acrylic vessel and PMT array of the SNO detector, but several experimental upgrades and adaptations were necessary to allow for the use of liquid scintillator. The SNO+ technique allows a staged approach, and extensive R&D is ongoing to increase the loadings and improve the purification of Tellurium. The very good conditions of background and low energy threshold allow SNO+ to also have other physics topics in its program, including geo- and reactor neutrinos, Supernova and solar neutrinos. This talk will describe the main advantages and challenges of the SNO+ approach for the double-beta decay program, the current status of the experiment and its sensitivity prospects.

  15. Experiments on plants grown in space. Status and prospects

    NASA Technical Reports Server (NTRS)

    Halstead, T. W.; Dutcher, F. R.

    1984-01-01

    Space flight provides a unique capability to gravitational research by providing an environment in which gravity can be manipulated below the Earth norm of 1 to a state comparable to weightlessness. Although space experiments with seeds and plants have been conducted for almost 25 years, we are only now entering an era that promises the capability of routinely conducting controlled plant experiments in space. Results from experiments with higher plants and seeds flown thus far in both manned and unmanned spacecraft from both the USA and USSR are briefly summarized. An overview of the current status of space biology experimentation as it relates to plants is presented and present and future opportunities to conduct plant experiments under space flight conditions are discussed.

  16. Status of Meson Photoproduction Experiments with CLAS

    SciTech Connect

    Pasyuk, Eugene A.

    2014-01-01

    A large part of the experimental program in Hall B of the Jefferson Lab is dedicated to baryon spectroscopy. Meson photoproduction experiments are essential part of this program. CEBAF Large Acceptance Spectrometer (CLAS) and availability of circularly and linearly polarized tagged photon beams in combination with longitudinally and transversely polarized frozen spin targets provide unique conditions for this type of experiments. For the first time, a complete or nearly complete measurement became possible and will allow model independent extraction of the reaction amplitude. The measurements were complete with both proton and deuteron targets. An overview of the collected experimental data will be presented.

  17. Status migrainosus: an unusual presentation of a brain abscess.

    PubMed

    Bruera, O C; de Lourdes Figuerola, M; Gandolfo, C; Saggese, J; Giglio, J A

    1999-01-01

    Status migrainosus and brain abscess are uncommon complications of migraine and infectious diseases, respectively. We describe a woman with a history of migraine with aura but without any history of a pyogenic infectious process, who suffered status migrainosus as the sole manifestation of a brain abscess.

  18. Feed enzyme technology: present status and future developments.

    PubMed

    Ravindran, Velmurugu; Son, Jang-Ho

    2011-05-01

    Exogenous enzymes are now well accepted as a class of feed additives in diet formulations for poultry and pigs to overcome the negative effects of anti-nutritional factors, and to improve digestion of dietary components and animal performance. An overview of the current status of feed enzyme technology, including the different type of enzymes and modes of action, is provided. Variable response to enzyme supplementation is an important reason limiting the widespread acceptance of feed enzymes. The major reasons contributing to these variable responses are discussed. Main features of the next generation of feed enzymes and the various trends that will drive the future use of enzymes are highlighted. The use of feed enzymes in poultry and pig feed formulations is expected to increase in the future and this will be driven by on-going changes in the world animal production. Aquaculture and ruminant industries are emerging markets for exogenous feed enzymes. The article presents some promising patents on feed enzyme technology.

  19. Orbital retinoblastoma: Present status and future challenges – A review

    PubMed Central

    Ali, Mohammad J.; Honavar, Santosh G.; Reddy, Vijay A.P.

    2010-01-01

    Orbital retinoblastoma is a catastrophic event traditionally carrying a dismal prognosis. Although its incidence is less in the developed countries it continues to be one of the major diagnosis at presentation in the developing world. Orbital retinoblastoma encompasses a wide range of distinct clinical entities with varying tumor load. There are no standard treatment protocols as of now but the current preferred management is multimodal with a combination of initial high-dose chemotherapy, surgery, external beam radiotherapy and prolonged chemotherapy for twelve cycles. In spite of progress on all fronts including surgical, medical, diagnostic, genetic and rehabilitative with improving survival rates, however, lack of access to medical facilities, lack of education about the need for early medical attention and cultural resistance to enucleation continue to contribute to an epidemic of extra ocular disease at diagnosis in the developing world. This review introduces the various terminologies used in the spectrum of orbital retinoblastoma, discusses in details the clinical aspects and management protocols, current status and the future directions. PMID:23960917

  20. Progress and present status of ITER cryoline system

    SciTech Connect

    Badgujar, S.; Bonneton, M.; Chalifour, M.; Forgeas, A.; Serio, L.; Sarkar, B.; Shah, N.

    2014-01-29

    The cryoline system at ITER forms a very complex network localized inside the Tokamak building, on a dedicated plant bridge and in cryoplant areas. The cooling power produced in the cryoplant is distributed via these lines with a total length of about 3.7 km and interconnecting all the cold boxes of the cryogenic system as well as the cold boxes of various clients (magnets, cryopumps and thermal shield). Distinct layouts and polygonal geometry, nuclear safety and confinement requirements, difficult installation and in-service inspection/repair demand very high reliability and availability for the cryolines. The finalization of the building-embedded plates for supporting the lines, before the detailed design, has made this project technologically more challenging. The conceptual design phase has been completed and procurement arrangements have been signed with India, responsible for providing the system of cryolines and warm lines to ITER, as in kind contribution. The prototype test for the design and performance validation has been planned on a representative cryoline section. After describing the basic features and general layout of the ITER cryolines, the paper presents key design requirements, conceptual design approach, progress and status of the cryolines project as well as challenges to build such a complex cryoline system.

  1. [Present status and sustainable development of Dendrobium officinale industry].

    PubMed

    Wu, Yunqin; Si, Jinping

    2010-08-01

    To understand the present status and characteristics of Dendrobium officinale industry and to provide a rationale for the sustainable industrial development. Based on references and an on-site investigation of main Dendrobium officinale-producing enterprises and market, to analyze main existing problems and to propose suggestions for sustainable development. More than 10 provinces and regions are involved in the production around the center of Zhejiang and Yunnan provinces. These two provinces are different from each other in development pattern. Yunnan adopts a mode of companies minus farmer households but Zhejiang mainly employs a mode that a leading company establishes a production base with production, processing and marketing combined together. Zhejiang mode is characterized by high tech, high investment, high risk and high return. Existence of non-genuine species, stagnancy in development and application of varieties and techniques for quality control and a narrow channel for marketing are the key problems limiting sustainable development of the industry. The key to sustainable development of the industry is to establish a technological alliance to speed up development of common techniques and application of integrated innovations, to strengthen self-discipline and monitoring of production, and to expand sales market.

  2. Status of the Daya Bay Reactor Neutrino Oscillation Experiment

    SciTech Connect

    Daya Bay Collaboration; Lin, Cheng-Ju Stephen

    2010-12-15

    The last unknown neutrino mixing angle theta_13 is one of the fundamental parameters of nature; it is also a crucial parameter for determining the sensitivity of future long-baseline experiments aimed to study CP violation in the neutrino sector. Daya Bay is a reactor neutrino oscillation experiment designed to achieve a sensitivity on the value of sin^2(2*theta_13) to better than 0.01 at 90percent CL. The experiment consists of multiple identical detectors placed underground at different baselines to minimize systematic errors and suppress cosmogenic backgrounds. With the baseline design, the expected anti-neutrino signal at the far site is about 360 events per day and at each of the near sites is about 1500 events per day. An overview and current status of the experiment will be presented.

  3. Status and commissioning of the Karlsruhe tritium neutrino experiment KATRIN

    NASA Astrophysics Data System (ADS)

    Thuemmler, Thomas; Katrin Collaboration

    2013-10-01

    Neutrino properties, and especially the determination of the neutrino rest mass, play an important role at the intersections of cosmology, particle physics and astroparticle physics. At present there are two complementary approaches to address this topic in laboratory experiments. The search for neutrinoless double β decay probes whether neutrinos are Majorana particles and determines an effective neutrino mass value. Experiments based on single β decay investigate electrons close to their kinematic endpoint in order to determine the neutrino mass by a modelindependent method. The KArlsruhe TRItium Neutrino experiment (KATRIN) is currently the experiment in the most advanced status of commissioning. Applying an ultra-luminous molecular windowless gaseous tritium source and an integrating high-resolution spectrometer of MAC-E filter type, it allows β spectroscopy close to the tritium endpoint with unprecedented precision and will reach a sensitivity of 200 meV/c2 (90% C.L.) on the neutrino mass.

  4. Iodine status in the Nordic countries – past and present

    PubMed Central

    Nyström, Helena Filipsson; Brantsæter, Anne Lise; Erlund, Iris; Gunnarsdottir, Ingibjörg; Hulthén, Lena; Laurberg, Peter; Mattisson, Irene; Rasmussen, Lone Banke; Virtanen, Suvi; Meltzer, Helle Margrete

    2016-01-01

    Background Adequate iodine nutrition is dependent on ground water content, seafood, and, as many countries use iodized cow fodder, dairy products. In most countries, salt fortification programs are needed to assure adequate iodine intake. Objectives The objectives are threefold: 1) to describe the past and present iodine situation in the Nordic countries, 2) to identify important gaps of knowledge, and 3) to highlight differences among the Nordic countries’ iodine biomonitoring and fortification policies. Design Historical data are compared with the current situation. The Nordic countries’ strategies to achieve recommended intake and urine iodine levels and their respective success rates are evaluated. Results In the past, the iodine situation ranged from excellent in Iceland to widespread goiter and cretinism in large areas of Sweden. The situation was less severe in Norway and Finland. According to a 1960 World Health Organization (WHO) report, there were then no observations of iodine deficiency in Denmark. In Sweden and Finland, the fortification of table salt was introduced 50–75 years ago, and in Norway and Finland, the fortification of cow fodder starting in the 1950s helped improve the population's iodine status due to the high intake of milk. In Denmark, iodine has been added to household salt and salt in bread for the past 15 years. The Nordic countries differ with regard to regulations and degree of governmental involvement. There are indications that pregnant and lactating women, the two most vulnerable groups, are mildly deficient in iodine in several of the Nordic countries. Conclusion The Nordic countries employ different strategies to attain adequate iodine nutrition. The situation is not optimal and is in need of re-evaluation. Iodine researchers, Nordic national food administrations, and Nordic governmental institutions would benefit from collaboration to attain a broader approach and guarantee good iodine health for all. PMID:27283870

  5. Present status of optical ISL studies in Japan

    NASA Astrophysics Data System (ADS)

    Furuhama, Yoji; Yasukawa, Koji; Kashiki, Kanshiro; Hirata, Yasuo

    1987-01-01

    The current status of optical intersatellite link (ISL) R&D and related optical technologies in Japan are reviewed. Emphasis is placed on semiconductor laser diodes, photodetectors, CCDs, and modulation/demodulation techniques. Directions of future research on optical devices and communication systems are examined.

  6. Illiteracy, Sex and Occupational Status in Present-Day China.

    ERIC Educational Resources Information Center

    Lamontagne, Jacques

    This study determined the magnitude of disparity between men and women in China in relation to illiteracy and occupational status. Region and ethnicity are used as control variables. The data collected are from a 10 percent sampling of the 1982 census; the total sample size includes a population of 100,380,000 nationwide. The census questionnaire…

  7. National Fuel Cell Vehicle Learning Demonstration: Status and Results (Presentation)

    SciTech Connect

    Wipke, K.; Sprik, S.; Kurtz, J.; Ramsden, T.; Garbak, J.

    2009-04-22

    The objectives of this paper are: (1) validate H{sub 2} FC vehicles and infrastructure in parallel; (2) identify current status and evolution of the technology; (3) objectively assess progress toward technology readiness; and (4) provide feedback to H{sub 2} research and development.

  8. Illiteracy, Sex and Occupational Status in Present-Day China.

    ERIC Educational Resources Information Center

    Lamontagne, Jacques

    This study determined the magnitude of disparity between men and women in China in relation to illiteracy and occupational status. Region and ethnicity are used as control variables. The data collected are from a 10 percent sampling of the 1982 census; the total sample size includes a population of 100,380,000 nationwide. The census questionnaire…

  9. Groundwater Storage Changes: Present Status from GRACE Observations

    NASA Technical Reports Server (NTRS)

    Chen, Jianli; Famiglietti, James S.; Scanlon, Bridget R.; Rodell, Matthew

    2015-01-01

    Satellite gravity measurements from the Gravity Recovery and Climate Experiment (GRACE) provide quantitative measurement of terrestrial water storage (TWS) changes with unprecedented accuracy. Combining GRACE-observed TWS changes and independent estimates of water change in soil and snow and surface reservoirs offers a means for estimating groundwater storage change. Since its launch in March 2002, GRACE time-variable gravity data have been successfully used to quantify long-term groundwater storage changes in different regions over the world, including northwest India, the High Plains Aquifer and the Central Valley in the USA, the North China Plain, Middle East, and southern Murray-Darling Basin in Australia, where groundwater storage has been significantly depleted in recent years (or decades). It is difficult to rely on in situ groundwater measurements for accurate quantification of large, regional-scale groundwater storage changes, especially at long timescales due to inadequate spatial and temporal coverage of in situ data and uncertainties in storage coefficients. The now nearly 13 years of GRACE gravity data provide a successful and unique complementary tool for monitoring and measuring groundwater changes on a global and regional basis. Despite the successful applications of GRACE in studying global groundwater storage change, there are still some major challenges limiting the application and interpretation of GRACE data. In this paper, we present an overview of GRACE applications in groundwater studies and discuss if and how the main challenges to using GRACE data can be addressed.

  10. Groundwater Storage Changes: Present Status from GRACE Observations

    NASA Astrophysics Data System (ADS)

    Chen, Jianli; Famigliett, James S.; Scanlon, Bridget R.; Rodell, Matthew

    2016-03-01

    Satellite gravity measurements from the Gravity Recovery and Climate Experiment (GRACE) provide quantitative measurement of terrestrial water storage (TWS) changes with unprecedented accuracy. Combining GRACE-observed TWS changes and independent estimates of water change in soil and snow and surface reservoirs offers a means for estimating groundwater storage change. Since its launch in March 2002, GRACE time-variable gravity data have been successfully used to quantify long-term groundwater storage changes in different regions over the world, including northwest India, the High Plains Aquifer and the Central Valley in the USA, the North China Plain, Middle East, and southern Murray-Darling Basin in Australia, where groundwater storage has been significantly depleted in recent years (or decades). It is difficult to rely on in situ groundwater measurements for accurate quantification of large, regional-scale groundwater storage changes, especially at long timescales due to inadequate spatial and temporal coverage of in situ data and uncertainties in storage coefficients. The now nearly 13 years of GRACE gravity data provide a successful and unique complementary tool for monitoring and measuring groundwater changes on a global and regional basis. Despite the successful applications of GRACE in studying global groundwater storage change, there are still some major challenges limiting the application and interpretation of GRACE data. In this paper, we present an overview of GRACE applications in groundwater studies and discuss if and how the main challenges to using GRACE data can be addressed.

  11. Groundwater Storage Changes: Present Status from GRACE Observations

    NASA Technical Reports Server (NTRS)

    Chen, Jianli; Famiglietti, James S.; Scanlon, Bridget R.; Rodell, Matthew

    2015-01-01

    Satellite gravity measurements from the Gravity Recovery and Climate Experiment (GRACE) provide quantitative measurement of terrestrial water storage (TWS) changes with unprecedented accuracy. Combining GRACE-observed TWS changes and independent estimates of water change in soil and snow and surface reservoirs offers a means for estimating groundwater storage change. Since its launch in March 2002, GRACE time-variable gravity data have been successfully used to quantify long-term groundwater storage changes in different regions over the world, including northwest India, the High Plains Aquifer and the Central Valley in the USA, the North China Plain, Middle East, and southern Murray-Darling Basin in Australia, where groundwater storage has been significantly depleted in recent years (or decades). It is difficult to rely on in situ groundwater measurements for accurate quantification of large, regional-scale groundwater storage changes, especially at long timescales due to inadequate spatial and temporal coverage of in situ data and uncertainties in storage coefficients. The now nearly 13 years of GRACE gravity data provide a successful and unique complementary tool for monitoring and measuring groundwater changes on a global and regional basis. Despite the successful applications of GRACE in studying global groundwater storage change, there are still some major challenges limiting the application and interpretation of GRACE data. In this paper, we present an overview of GRACE applications in groundwater studies and discuss if and how the main challenges to using GRACE data can be addressed.

  12. The Spacecraft Fire Experiment (Saffire) - Objectives, Development and Status

    NASA Technical Reports Server (NTRS)

    Schoren, William; Ruff, Gary A.; Urban, David L.

    2016-01-01

    Since 2012, the Spacecraft Fire Experiment (Saffire) has been under development by the Spacecraft Fire Safety Demonstration (SFS Demo) project that is funded by NASA's Advanced Exploration Systems Division in the Human Exploration and Operations Mission Directorate. The overall objective of this project is to reduce the uncertainty and risk associated with the design of spacecraft fire safety systems for NASA's exploration missions. This is accomplished by defining, developing, and conducting experiments that address gaps in spacecraft fire safety knowledge and capabilities identified by NASA's Fire Safety System Maturation Team. This paper describes the three Spacecraft Fire Experiments (Saffire-I, -II, and -III) that were developed at NASA-GRC and that will conduct a series of material flammability tests in low-gravity and at length scales that are realistic for a spacecraft fire. The experiments will be conducted in Orbital ATK's Cygnus vehicle after it has unberthed from the International Space Station. The tests will be fully automated with the data downlinked at the conclusion of the test and before the Cygnus vehicle reenters the atmosphere. The objectives of these experiments are to (1) determine how rapidly a large scale fire grows in low-gravity and (2) investigate the low-g flammability limits compared to those obtained in NASA's normal gravity material flammability screening test. The hardware for these experiments has been completed and is awaiting their respective launches, all planned for 2016. This paper will review the objectives of these experiments and how they address several of the knowledge gaps for NASA's exploration missions. The hardware development will be discussed including several novel approaches that were taken for testing and evaluation of these series payloads. The status of the missions and operational status will also be presented.

  13. Present status of computational tools for Maglev development

    NASA Astrophysics Data System (ADS)

    Wang, Z.; Chen, S. S.; Rote, D. M.

    1991-10-01

    High-speed vehicles that employ magnetic levitation (maglev) have received great attention worldwide as a means of relieving both highway and air-traffic congestion. At this time, Japan and Germany are leading the development of maglev. After fifteen years of inactivity that is attributed to technical policy decisions, the Federal government of the United States has reconsidered the possibility of using maglev in the United States. The National Maglev Initiative (NMI) was established in May 1990 to assess the potential of maglev in the United States. One of the tasks of the NMI, which is also the objective of this report, is to determine the status of existing computer software that can be applied to maglev-related problems. The computational problems involved in maglev assessment, research, and development can be classified into two categories: electromagnetic and mechanical. Because most maglev problems are complicated and difficult to solve analytically, proper numerical methods are needed to find solutions. To determine the status of maglev-related software, developers and users of computer codes were surveyed. The results of the survey are described in this report.

  14. Present status of computational tools for maglev development

    SciTech Connect

    Wang, Z.; Chen, S.S.; Rote, D.M.

    1991-10-01

    High-speed vehicles that employ magnetic levitation (maglev) have received great attention worldwide as a means of relieving both highway and air-traffic congestion. At this time, Japan and Germany are leading the development of maglev. After fifteen years of inactivity that is attributed to technical policy decisions, the federal government of the United States has reconsidered the possibility of using maglev in the United States. The National Maglev Initiative (NMI) was established in May 1990 to assess the potential of maglev in the United States. One of the tasks of the NMI, which is also the objective of this report, is to determine the status of existing computer software that can be applied to maglev-related problems. The computational problems involved in maglev assessment, research, and development can be classified into two categories: electromagnetic and mechanical. Because most maglev problems are complicated and difficult to solve analytically, proper numerical methods are needed to find solutions. To determine the status of maglev-related software, developers and users of computer codes were surveyed. The results of the survey are described in this report. 25 refs.

  15. Present status of yellow fever: Memorandum from a PAHO Meeting*

    PubMed Central

    1986-01-01

    An international seminar on the treatment and laboratory diagnosis of yellow fever, sponsored by the Pan American Health Organization (PAHO) and held in 1984, differed from previous meetings on yellow fever because of its emphasis on the care and management of patients and because the participants included specialists from several branches of medicine, such as hepatology, haematology, cardiology, infectious diseases, pathology and nephrology. The meeting reviewed the current status of yellow fever and problems associated with case-finding and notification; features of yellow fever in individual countries of Latin America; health services and facilities for medical care as they relate to diagnosis and management of cases; prevention strategies for and current status of immunization programmes; clinical and pathological aspects of yellow fever in humans; pathogenesis and pathophysiology of yellow fever in experimental animal models; clinical and specific laboratory diagnosis; treatment of the disease and of complications in the functioning of individual organ systems; prognosis and prognostic indicators; and directions for future clinical and experimental research on pathophysiology and treatment. PMID:3490922

  16. Present status and applications of Interferometric Synthetic Aperture Radar

    NASA Astrophysics Data System (ADS)

    Qiao, Shubo; Li, Jinling; Sun, Fuping; Bian, Shaofeng

    2003-03-01

    Interferometric Synthetic Aperture Radar (InSAR) is a newly developed space geodetic technique, which provides the three dimensional information of targets on the Earth by interferometric processing of the Single Look Complex Images (SLC-Image) of Synthetic Aperture Radar (SAR). Because of the outstanding characteristics in all-weather and 24-hour continuous surveying, as well as the ability to penetrate into some substances on the Earth, the latent application fields of InSAR are rather broad, which becomes one of the foci in Earth science study. Hereby the principles and general status of SAR and InSAR are briefly introduced. The limitations in the precision of the height determination of targets on the Earth by InSAR are analyzed. The applications of InSAR and the mutual relation for promotion between InSAR and astro-geodynamics study are highlighted discussed.

  17. Present Status And Future Prospects Of Polarized Ion Sources

    SciTech Connect

    Belov, A.; Zelenski, A.

    2009-08-04

    Recent progress in polarized ion sources development is reviewed. New techniques for production of polarized H{sup -} ion (proton), D{sup -} (D{sup +}) and {sup 3}He{sup ++} ion beams are discussed. Feasibility studies of these techniques are in progress at BNL and other laboratories. Polarized deuteron beams will be required for the polarization program at the Dubna Nuclotron and at the deuteron Electric Dipole Moment experiment at BNL. Experiments with polarized {sup 3}He{sup ++} ion beams are a part of the experimental program at the future Electron Ion Collider.

  18. Status of the NOvA experiment

    SciTech Connect

    Plunkett, Robert; /Fermilab

    2007-12-01

    The NOvA experiment, using the existing NuMI beamline, is planned for construction at Ash River, Minnesota. The experiment will provide a measurement of, or strong limit on the neutrino mixing angle {theta}{sub 13}, and for sufficiently strong mixing, establish the hierarchy of the neutrino masses.

  19. The Status of Radiation Damage Experiments

    SciTech Connect

    Strachan, Denis M.; Scheele, Randall D.; Icenhower, Jonathan P.; Kozelisky, Anne E.; Sell, Richard L.; Legore, Virginia L.; Schaef, Herbert T.; O'Hara, Matthew J.; Brown, Christopher F.; Buchmiller, William C.

    2001-11-20

    Experiments have been on-going for about two years to determine the effects that radiation damage have on the physical and chemical properties of candidate titanate ceramics for the immobilization of plutonium. We summarize the results of these experiments in this document.

  20. Photovoltaic manufacturing: Present status, future prospects, and research needs

    SciTech Connect

    Wolden, C.A.; Fthenakis, V.; Kurtin, J.; Baxter, J.; Repins, I.; Shasheen, S.; Torvik, J.; Rocket, A.; Aydil, E.

    2011-03-29

    In May 2010 the United States National Science Foundation sponsored a two-day workshop to review the state-of-the-art and research challenges in photovoltaic (PV) manufacturing. This article summarizes the major conclusions and outcomes from this workshop, which was focused on identifying the science that needs to be done to help accelerate PV manufacturing. A significant portion of the article focuses on assessing the current status of and future opportunities in the major PV manufacturing technologies. These are solar cells based on crystalline silicon (c-Si), thin films of cadmium telluride (CdTe), thin films of copper indium gallium diselenide, and thin films of hydrogenated amorphous and nanocrystalline silicon. Current trends indicate that the cost per watt of c-Si and CdTe solar cells are being reduced to levels beyond the constraints commonly associated with these technologies. With a focus on TW/yr production capacity, the issue of material availability is discussed along with the emerging technologies of dye-sensitized solar cells and organic photovoltaics that are potentially less constrained by elemental abundance. Lastly, recommendations are made for research investment, with an emphasis on those areas that are expected to have cross-cutting impact.

  1. Transcatheter Aortic Valve Replacement: Comprehensive Review and Present Status

    PubMed Central

    Misenheimer, Jacob A.; Ramaraj, Radhakrishnan

    2017-01-01

    Aortic stenosis is the most common valvular heart disease in the developed world. About 7% of the population over age 65 years suffers from degenerative aortic stenosis. The prognosis of patients with symptomatic severe aortic stenosis is dismal without valve replacement. Even though the American College of Cardiology recommends aortic valve replacement to treat this condition as a class I recommendation, approximately one third of these patients over the age of 75 years are not referred for surgery. Typically, this is from concern about prohibitive surgical risk associated with patient frailty, comorbidities, age, and severe left ventricular dysfunction. The advent in France of transcatheter aortic valve replacement has raised the hope in the United States for an alternative, less invasive treatment for aortic stenosis. Two recent trials—the Placement of AoRTic TraNscathetER Valve Trial Edwards SAPIEN Transcatheter Heart Valve (Partner) and the CoreValve US Pivotal—have established transcatheter aortic valve replacement as the preferred approach in patients who are at high or prohibitive surgical risk. The more recently published Partner 2 trial has shown the feasibility of transcatheter aortic valve replacement in intermediate-surgical-risk patients as well. With a profile that promises easier use and better valve performance and delivery, newer-generation valves have shown their potential for further improvement in safety profile and overall outcomes. We review the history and status of this topic. PMID:28265210

  2. NASTRAN thermal analyzer status, experience, and new developments

    NASA Technical Reports Server (NTRS)

    Lee, H. P.

    1975-01-01

    The unique finite element based NASTRAN Thermal Analyzer originally developed as a general purpose heat transfer analysis incorporated into the NASTRAN system is described. The current status, experiences from field applications, and new developments are included.

  3. Trans-Pacific Astronomy Experiment Project Status

    NASA Technical Reports Server (NTRS)

    Hsu, Eddie

    2000-01-01

    The Trans-Pacific Astronomy Experiment is Phase 2 of the Trans-Pacific High Data Rate Satcom Experiments following the Trans-Pacific High Definition Video Experiment. It is a part of the Global Information Infrastructure-Global Interoperability for Broadband Networks Project (GII-GIBN). Provides global information infrastructure involving broadband satellites and terrestrial networks and access to information by anyone, anywhere, at any time. Collaboration of government, industry, and academic organizations demonstrate the use of broadband satellite links in a global information infrastructure with emphasis on astronomical observations, collaborative discussions and distance learning.

  4. Relativity experiment on Helios - A status report

    NASA Technical Reports Server (NTRS)

    Anderson, J. D.; Melbourne, W. G.; Cain, D. L.; Lau, E. K.; Wong, S. K.; Kundt, W.

    1975-01-01

    The relativity experiment on Helios (Experiment 11) uses S-band and Doppler data, and spacecraft-solar-orbital data to measure the effects of general relativity in the solar system and the quadrupole moment in the solar gravitational field. Specifically, Experiment 11 is converned with measuring the following effects: (1) relativistic orbital corrections described by two parameters of the space-time metric which are both equal to unity in Einstein's theory; (2) orbital perturbations caused by a finite quadrupole moment of an oblate sun, described by zonal harmonics in the solar gravitational field.

  5. The capillary flow experiments aboard the International Space Station: Status

    NASA Astrophysics Data System (ADS)

    Weislogel, Mark M.; Jenson, Ryan; Chen, Yongkang; Collicott, Steven H.; Klatte, Jörg; Dreyer, Michael

    2009-09-01

    This paper provides a current overview of the in-flight operations and experimental results of the capillary flow experiment (CFE) performed aboard the International Space Station (ISS) beginning August 2004 to present, with at least 16 operations to date by five astronauts. CFE consists of six approximately 1-2 kg experiment units designed to probe certain capillary phenomena of fundamental and applied importance, such as capillary flow in complex containers, critical wetting in discontinuous structures, and large length scale contact line dynamics. Highly quantitative video images from the simply performed experiments provide direct confirmation of the usefulness of current analytical design tools as well as provide guidance to the development of new ones. A description of the experiments, crew procedures, performances and status of the data collection and reduction is provided for the project. The specific experimental objectives are briefly introduced by way of the crew procedures and a sample of the verified theoretical predictions of the fluid behavior is provided. The potential impact of the flight experiments on the design of spacecraft fluid systems is discussed in passing.

  6. Status of the Wind-Diesel Market (Presentation)

    SciTech Connect

    Baring-Gould, E. I.

    2014-02-01

    This presentation offers an overview of the wind-diesel market, including the range of power systems, recent progress, current energy situation of remote communities, operating projects, current market approaches and ongoing challenges.

  7. The Process of Poster Presentation: A Valuable Learning Experience.

    ERIC Educational Resources Information Center

    Bracher, Lee; Cantrell, Jane; Wilkie, Kay

    1998-01-01

    Describes the formative use of poster presentations in a nursing-education program. Discusses the use of poster presentation as a successful assessment strategy and a motivating experience for students and teachers. (Author/WRM)

  8. Research experience in psychiatry residency programs across Canada: current status.

    PubMed

    Shanmugalingam, Arany; Ferreria, Sharon G; Norman, Ross M G; Vasudev, Kamini

    2014-11-01

    To determine the current status of research experience in psychiatry residency programs across Canada. Coordinators of Psychiatric Education (COPE) resident representatives from all 17 psychiatry residency programs in Canada were asked to complete a survey regarding research training requirements in their programs. Among the 17 COPE representatives, 15 completed the survey, representing 88% of the Canadian medical schools that have a psychiatry residency program. Among the 15 programs, 11 (73%) require residents to conduct a scholarly activity to complete residency. Some of these programs incorporated such a requirement in the past 5 years. Ten respondents (67%) reported availability of official policy and (or) guidelines on resident research requirements. Among the 11 programs that have a research requirement, 10 (91%) require residents to complete 1 scholarly activity; 1 requires completion of 2 scholarly activities. Eight (53%) residency programs reported having a separate research track. All of the programs have a research coordinator and 14 (93%) programs provide protected time to residents for conducting research. The 3 most common types of scholarly activities that qualify for the mandatory research requirement are a full independent project (10 programs), a quality improvement project (8 programs), and assisting in a faculty project (8 programs). Six programs expect their residents to present their final work in a departmental forum. None of the residency programs require publication of residents' final work. The current status of the research experience during psychiatry residency in Canada is encouraging but there is heterogeneity across the programs.

  9. Research Experience in Psychiatry Residency Programs Across Canada: Current Status

    PubMed Central

    Shanmugalingam, Arany; Ferreria, Sharon G; Norman, Ross M G; Vasudev, Kamini

    2014-01-01

    Objective: To determine the current status of research experience in psychiatry residency programs across Canada. Method: Coordinators of Psychiatric Education (COPE) resident representatives from all 17 psychiatry residency programs in Canada were asked to complete a survey regarding research training requirements in their programs. Results: Among the 17 COPE representatives, 15 completed the survey, representing 88% of the Canadian medical schools that have a psychiatry residency program. Among the 15 programs, 11 (73%) require residents to conduct a scholarly activity to complete residency. Some of these programs incorporated such a requirement in the past 5 years. Ten respondents (67%) reported availability of official policy and (or) guidelines on resident research requirements. Among the 11 programs that have a research requirement, 10 (91%) require residents to complete 1 scholarly activity; 1 requires completion of 2 scholarly activities. Eight (53%) residency programs reported having a separate research track. All of the programs have a research coordinator and 14 (93%) programs provide protected time to residents for conducting research. The 3 most common types of scholarly activities that qualify for the mandatory research requirement are a full independent project (10 programs), a quality improvement project (8 programs), and assisting in a faculty project (8 programs). Six programs expect their residents to present their final work in a departmental forum. None of the residency programs require publication of residents’ final work. Conclusions: The current status of the research experience during psychiatry residency in Canada is encouraging but there is heterogeneity across the programs. PMID:25565474

  10. The NASA Ames Closed Environmental Research Chamber: Present Status

    NASA Technical Reports Server (NTRS)

    Gross, Anthony R.; Korsmeyer, David J.; Harper, Lynn D.; Force, Edwin L.

    1994-01-01

    The Closed Environmental Research Chamber (CERC) at the NASA Ames Research Center was created to investigate both components and complete systems for life support of advanced space exploration missions. This facility includes a Main Chamber, an Airlock, a Sample Transfer Lock, a Vacuum System, an Air Recompression System, a dedicated control room and a pit area for housing supporting and environmental control systems. The Main Chamber provides 310 sq ft of internal working/living space on two levels. It is planned that the CERC will be a human-rated facility for habitation simulation under mass balance closure conditions. The internal pressure will be variable over the range of 14.7 psia to 5 psia with accompanying capability for variation in atmosphere composition to maintain the oxygen partial pressure at 160 mm Hg. The CERC will be provided with a core set of primary life support subsystems for temperature and humidity control, C02 removal and trace contaminant control. Interfacing with external life support technology test bds with be provided, along with connection to centralized, microprocessor-based data acquisition and control systems. This paper will discuss the current status of the CERC facility and show how it is being used to address the advanced technology requirements necessary to implement an integrated working and living environment for a planetary habitat. In particular, it will be shown how the CERC, along with a human-powered centrifuge, a planetary terrain simulator and advanced displays and a virtual reality capability will work together to develop and demonstration applicable technologies for future planetary habitats. Artificial intelligence and expert system programming techniques will be used extensively to provide an automated environment for a 4-person crew. There will be several robotic mechanisms performing exploration tasks external to the habitat that will be controlled through the virtual environment to provide representative

  11. The NASA Ames Closed Environmental Research Chamber: Present Status

    NASA Technical Reports Server (NTRS)

    Gross, Anthony R.; Korsmeyer, David J.; Harper, Lynn D.; Force, Edwin L.

    1994-01-01

    The Closed Environmental Research Chamber (CERC) at the NASA Ames Research Center was created to investigate both components and complete systems for life support of advanced space exploration missions. This facility includes a Main Chamber, an Airlock, a Sample Transfer Lock, a Vacuum System, an Air Recompression System, a dedicated control room and a pit area for housing supporting and environmental control systems. The Main Chamber provides 310 sq ft of internal working/living space on two levels. It is planned that the CERC will be a human-rated facility for habitation simulation under mass balance closure conditions. The internal pressure will be variable over the range of 14.7 psia to 5 psia with accompanying capability for variation in atmosphere composition to maintain the oxygen partial pressure at 160 mm Hg. The CERC will be provided with a core set of primary life support subsystems for temperature and humidity control, C02 removal and trace contaminant control. Interfacing with external life support technology test bds with be provided, along with connection to centralized, microprocessor-based data acquisition and control systems. This paper will discuss the current status of the CERC facility and show how it is being used to address the advanced technology requirements necessary to implement an integrated working and living environment for a planetary habitat. In particular, it will be shown how the CERC, along with a human-powered centrifuge, a planetary terrain simulator and advanced displays and a virtual reality capability will work together to develop and demonstration applicable technologies for future planetary habitats. Artificial intelligence and expert system programming techniques will be used extensively to provide an automated environment for a 4-person crew. There will be several robotic mechanisms performing exploration tasks external to the habitat that will be controlled through the virtual environment to provide representative

  12. Status of Magnetohydrodynamic Augmented Propulsion Experiment

    NASA Technical Reports Server (NTRS)

    Litchford, Ron J.; Lineberry, John T.

    2007-01-01

    Over the past several years, efforts have been under way to design and develop an operationally flexible research facility for investigating the use of cross-field MHD accelerators as a potential thrust augmentation device for thermal propulsion systems, The baseline configuration for this high-power experimental facility utilizes a 1,5-MW, multi-gas arc-heater as a thermal driver for a 2-MW, MHD accelerator, which resides in a large-bore 2-tesla electromagnet. A preliminary design study using NaK seeded nitrogen as the working fluid led to an externally diagonalized segmented MHD channel configuration based on an expendable beat-sink design concept. The current status report includes a review of engineering/design work and performance optimization analyses and summarizes component hardware fabrication and development efforts, preliminary testing results, and recent progress toward full-up assembly and testing

  13. Western Interconnection Energy Imbalance Market Status and Prospects (Presentation)

    SciTech Connect

    Milligan, M.; Kirby, B.; King, J.; Beuning, S.

    2011-10-01

    This presentation describes how a new wholesale electricity market for energy imbalance ancillary services could be implemented and operated. Some conclusions of this presentation are: (1) Method for calculating additional reserve requirements due to wind and solar production; (2) EIM results in substantial reduction in reserves requirements and ramping demand; (3) Reduced participation reduces benefits for all but reduces the benefits to non-participants the most; (4) Full participation leads to maximum benefit across the Western Interconnection, up to 42% of total reserve requirement; and (5) Regional EIM implementations have smaller but substantial benefits.

  14. PRESENT STATUS OF CHARGE-BREEDING IN KEKCB AT TRIAC

    SciTech Connect

    Oyaizu, M.; Jeong, S. C.; Imai, N.; Fuchi, Y.; Hirayama, Y.; Ishiyama, H.; Miyatake, H.; Okada, M.; Watanabe, Y. X.; Ichikawa, S.; Kabumoto, H.; Matsuda, M.; Osa, A.; Otokawa, Y.

    2009-05-04

    We report a recent experiment about the measurement of wall distribution of ions externally injected for charge-breeding in an electron cyclotron resonance (ECR) ion source. The ions, radioactive and singly charged {sup 111}In, were injected into the ECR ion source (ECRIS) for breeding their charge states at the Tokai Radioactive Ion Accelerator Complex (TRIAC). The residual radioactivity on the wall of the ECR plasma chamber of the source was measured, giving a two-dimensional distribution of the ions failed to be re-extracted during charge breeding. The distribution was decomposed, according to azimuthal symmetry, into three components, asymmetric, 120-degree symmetric, and isotropic ones, whose origins were qualitatively discussed for clarifying ion-losses in the course of charge breeding in ECRIS.

  15. Probing the radiative zones of stars: Present status and developments

    NASA Astrophysics Data System (ADS)

    Turck-Chièze, S.

    2013-12-01

    Seismology of Sun and stars associated to precise solar neutrino detections reveals microscopic and macroscopic behaviors of radiative zones that were not anticipated by stellar modeling predictions. These results allow us to check the hypotheses of the equations used in stellar evolution for long. In this review, I list some of the problems which emerge from these confrontations both on the description of the Sun or solar-like stars and on the envelopes of intermediate-type stars, then I summarize the cases at least partly solved in using 3D MHD simulations, new opacity calculations and laboratory experiments. This review shows also how we hope to progress on the others inside our OPAC consortium or in using the coming detection of neutrino fluxes.

  16. QUIJOTE Experiment: status of telescopes and instrumentation

    NASA Astrophysics Data System (ADS)

    Pérez-de-Taoro, M. R.; Aguiar-González, M.; Cózar-Castellano, J.; Génova-Santos, R.; Gómez-Reñasco, F.; Hoyland, R.; Peláez-Santos, A.; Poidevin, F.; Tramonte, D.; Rebolo-López, R.; Rubiño-Martín, J. A.; Sánchez-de-la-Rosa, V.; Vega-Moreno, A.; Viera-Curbelo, T.; Vignaga, R.; Casas, F. J.; Martinez-Gonzalez, E.; Ortiz, D.; Aja, B.; Artal, E.; Cano-de-Diego, J. L.; de-la-Fuente, L.; Mediavilla, A.; Terán, J. V.; Villa, E.; Harper, S.; McCulloch, M.; Melhuish, S.; Piccirillo, L.; Lasenby, A.

    2016-07-01

    The QUIJOTE Experiment (Q-U-I JOint TEnerife) is a combined operation of two telescopes and three instruments working in the microwave band to measure the polarization of the Cosmic Microwave Background (CMB) from the northern hemisphere, at medium and large angular scales. The experiment is located at the Teide Observatory in Tenerife, one of the seven Canary Islands (Spain). The project is a consortium maintained by several institutions: the Instituto de Astrofísica de Canarias (IAC), the Instituto de Física de Cantabria (IFCA), the Communications Engineering Department (DICOM) at Universidad de Cantabria, and the Universities of Manchester and Cambridge. The consortium is led by the IAC.

  17. Identity Status, Self-Presentations, and Self-Conceptions.

    ERIC Educational Resources Information Center

    Berzonsky, Michael D.; And Others

    Adolescent psychologists readily acknowledge the role that peer expectations and pressures may play in causing youth to act in ways that conflict with previously assimilated attitudes and beliefs. However, minimal research has been focused on self-presentational behavior during adolescence. This study was designed to determine whether the…

  18. Neutrino oscillations: From a historical perspective to the present status

    NASA Astrophysics Data System (ADS)

    Bilenky, S.

    2016-07-01

    The history of neutrino mixing and oscillations is briefly presented. Basics of neutrino mixing and oscillations and convenient formalism of neutrino oscillations in vacuum are given. The role of neutrino in the Standard Model and the Weinberg mechanism of the generation of the Majorana neutrino masses are discussed.

  19. Neutrino oscillations: from an historical perspective to the present status

    NASA Astrophysics Data System (ADS)

    Bilenky, S.

    2016-05-01

    The history of neutrino mixing and oscillations is briefly presented. Basics of neutrino mixing and oscillations and convenient formalism of neutrino oscillations in vacuum is given. The role of neutrino in the Standard Model and the Weinberg mechanism of the generation of the Majorana neutrino masses are discussed.

  20. The Electronic Presentation: A Status Report of International Use.

    ERIC Educational Resources Information Center

    Griffin, Robert E.; And Others

    This paper describes how electronic presentations are currently used by business people. Business people in the United States and Sweden were surveyed to determine how they are using the medium. A questionnaire was mailed to 506 business people in the United States (201 returned) and to 80 business people in Sweden (76 returned). Results are…

  1. Towards Terahertz MMIC Amplifiers: Present Status and Trends

    NASA Technical Reports Server (NTRS)

    Samoska, Lorene

    2006-01-01

    This viewgraph presentation surveys the fastest Monolithic Millimeter-wave Integrated Circuit (MMIC) amplifiers to date; summarize previous solid state power amp results to date; reviews examples of MMICs, reviews Power vs. Gate periphery and frequency; Summarizes previous LNA results to date; reviews Noise figure results and trends toward higher frequency

  2. The Status of Presentation Software and Graphic Design Training.

    ERIC Educational Resources Information Center

    Chalupa, Marilyn R.; Sormunen, Carolee

    1996-01-01

    Usable surveys were received from 282 (23.5%) subscribers to a computer magazine, of whom 91.5% had taught themselves the use of presentation software. Less than 40% had graphic design training; about half recognized a need for it. Printed documentation was the most common means of support. (SK)

  3. [Drug therapy of tuberculosis: history and present-day status].

    PubMed

    Khomenko, A G

    1996-01-01

    Historical aspects of early and present-day chemotherapy of tuberculosis have been summarized for 5 decades. Chemotherapeutic approaches are specified in relation to different tuberculosis forms, duration, extension, bacterial discharge. 4 categories of patients at different treatment stages are recognized. The terms of after treatment cessation of bacterial discharge and cavern closure are detailed.

  4. The Present Status of the Antigonish Movement in Nova Scotia.

    ERIC Educational Resources Information Center

    Sowder, Ellie Mae

    A comprehensive case study is presented of the Antigonish Movement in eastern Nova Scotia. Originally founded to combat poverty and exploitation, it has functioned since 1929 under the extension department of St. Francis Xavier University, Antigonish. The Movement brought education into the lives of ordinary working people and introduced group…

  5. The Present Status of the Antigonish Movement in Nova Scotia.

    ERIC Educational Resources Information Center

    Sowder, Ellie Mae

    A comprehensive case study is presented of the Antigonish Movement in eastern Nova Scotia. Originally founded to combat poverty and exploitation, it has functioned since 1929 under the extension department of St. Francis Xavier University, Antigonish. The Movement brought education into the lives of ordinary working people and introduced group…

  6. Towards Terahertz MMIC Amplifiers: Present Status and Trends

    NASA Technical Reports Server (NTRS)

    Samoska, Lorene

    2006-01-01

    This viewgraph presentation surveys the fastest Monolithic Millimeter-wave Integrated Circuit (MMIC) amplifiers to date; summarize previous solid state power amp results to date; reviews examples of MMICs, reviews Power vs. Gate periphery and frequency; Summarizes previous LNA results to date; reviews Noise figure results and trends toward higher frequency

  7. Present status of liquid metal research for a fusion reactor

    NASA Astrophysics Data System (ADS)

    Tabarés, Francisco L.

    2016-01-01

    Although the use of solid materials as targets of divertor plasmas in magnetic fusion research is accepted as the standard solution for the very challenging issue of power and particle handling in a fusion reactor, a generalized feeling that the present options chosen for ITER will not represent the best choice for a reactor is growing up. The problems found for tungsten, the present selection for the divertor target of ITER, in laboratory tests and in hot plasma fusion devices suggest so. Even in the absence of the strong neutron irradiation expected in a reactor, issues like surface melting, droplet ejection, surface cracking, dust generation, etc., call for alternative solutions in a long pulse, high efficient fusion energy-producing continuous machine. Fortunately enough, decades of research on plasma facing materials based on liquid metals (LMs) have produced a wealth of appealing ideas that could find practical application in the route to the realization of a commercial fusion power plant. The options presently available, although in a different degree of maturity, range from full coverage of the inner wall of the device with liquid metals, so that power and particle exhaust together with neutron shielding could be provided, to more conservative combinations of liquid metal films and conventional solid targets basically representing a sort of high performance, evaporative coating for the alleviation of the surface degradation issues found so far. In this work, an updated review of worldwide activities on LM research is presented, together with some open issues still remaining and some proposals based on simple physical considerations leading to the optimization of the most conservative alternatives.

  8. Micro-PIXE in plant sciences: Present status and perspectives

    NASA Astrophysics Data System (ADS)

    Mesjasz-Przybyłowicz, Jolanta; Przybyłowicz, Wojciech J.

    2002-04-01

    Fundamental processes of plant physiology are affected or regulated by mineral nutrients. Hence understanding the mechanisms of nutrient uptake and their functions in plant metabolism is of fundamental importance in both basic and applied plant studies. The present knowledge of ion uptake mechanisms is based mostly on techniques for bulk analysis, including analysis of small (mg-sized) samples but without spatially resolved results. On the other hand, advanced studies of elemental transport at a cellular level are conducted using techniques with high and very high spatial resolution, but with low sensitivity for elemental analysis. Thus the results obtained are usually restricted to macronutrients or elements present in high quantities. There is a high demand for studies of the functions of trace elements. In addition, it is known that, depending on their concentrations, elements can play different roles in plant life. Studies related to elemental deficiency and toxicity, as well as environmental pollution, require accurate, fully quantitative methods with good spatial resolution. Ideally, these studies should be conducted on organs and tissues as far down as the cellular level. This is where micro-PIXE has been applied until present and can in the near future play a much more important role. Progress is subject to closer collaboration between plant biologists and the PIXE community in terms of addressing problems of specimen preparation, refinement of analytical protocols such as quantitative elemental mapping and the interpretation of results.

  9. Adaptive optics high resolution spectroscopy: present status and future direction

    SciTech Connect

    Alcock, C; Angel, R; Ciarlo, D; Fugate, R O; Ge, J; Kuzmenko, P; Lloyd-Hart, M; Macintosh, B; Najita, J; Woolf, N

    1999-07-27

    High resolution spectroscopy experiments with visible adaptive optics (AO) telescopes at Starfire Optical Range and Mt. Wilson have demonstrated that spectral resolution can be routinely improved by a factor of - 10 over the seeing-limited case with no extra light losses at visible wavelengths. With large CCDs now available, a very wide wavelength range can be covered in a single exposure. In the near future, most large ground-based telescopes will be equipped with powerful A0 systems. Most of these systems are aimed primarily at diffraction-limited operation in the near IR. An exciting new opportunity will thus open up for high resolution IR spectroscopy. Immersion echelle gratings with much coarser grooves being developed by us at LLNL will play a critical role in achieving high spectral resolution with a compact and low cost IR cryogenically cooled spectrograph and simultaneous large wavelength coverage on relatively small IR detectors. We have constructed a new A0 optimized spectrograph at Steward Observatory to provide R = 200,000 in the optical, which is being commissioned at the Starfire Optical Range 3.5m telescope. We have completed the optical design of the LLNL IR Immersion Spectrograph (LISPEC) to take advantage of improved silicon etching technology. Key words: adaptive optics, spectroscopy, high resolution, immersion gratings

  10. Photoelectron diffraction and holography: Present status and future prospects

    SciTech Connect

    Fadley, C.S. |; Thevuthasan, S.; Kaduwela, A.P.

    1993-07-01

    Photoelectron diffraction and photoelectron holography, a newly developed variant of it, can provide a rich range of information concerning surface structure. These methods are sensitive to atomic type, chemical state, and spin state. The theoretical prediction of diffraction patterns is also well developed at both the single scattering and multiple scattering levels, and quantitative fits of experiment to theory can lead to structures with accuracies in the {plus_minus}0.03 {Angstrom} range. Direct structural information can also be derived from forward scattering in scanned-angle measurements at higher energies, path length differences contained in scanned-energy data at lower energies, and holographic inversions of data sets spanning some region in angle and energy space. Diffraction can also affect average photoelectron emission depths. Circular dichroism in core-level emission can be fruitfully interpreted in terms of photoelectron diffraction theory, as can measurements with spin-resolved core-spectra, and studies of surface magnetic structures and phase transitions should be possible with these methods. Synchrotron radiation is a key element of fully utilizing these techniques.

  11. Status of ELI-ALPS implementation (Conference Presentation)

    NASA Astrophysics Data System (ADS)

    Osvay, Karoly; Charalambidis, Dimitris; Antici, Patrizio; Dombi, Péter; Fulop, Lajos J.; Lepine, Franck; Mészáros, Gergo; Sansone, Giuseppe; Varju, Katalin G.

    2017-05-01

    The major research equipment of the Attosecond Light Pulse Source of the Extreme Light Infrastructure (ELI-ALPS) are driven by laser pulses of few cycle duration operating in the 100 W average power regime. The peak power and the repetition rate span from 1 TW at 100 kHz up to PW at 10 Hz. The systems are designed for stable and reliable operation, yet to deliver pulses with unique parameters, especially with unmatched fluxes and extreme bandwidths. This exceptional performance will enable the generation of secondary sources with exceptional characteristics, including light sources ranging from the THz to the X-ray spectral ranges, and particle sources. The experimental activities in the building complex to be inaugurated early 2017 will start with the installation of the two 100 kHz repetition rate, CEP stabilized lasers in May 2017. The MIR laser produces 0.15mJ, shorter than 4-optical-cylce pulses tunable between 2.5-3.9 µm. The first stage of the HR laser will provide pulses around 1 µm with 1 mJ energy and pulse duration less than 6.2 fs. The systems will be optically synchronized to each other with a temporal jitter below 1 fs. Along with the installation of the lasers, we will also start the assembly of the high harmonic beamlines and the THz laboratory, as well as nanoplasmonic experiments. The XUV bursts of light with attosecond duration are expected to be generated by the end of 2017.

  12. [Adhesive substances in medicine--history, present status and perspectives].

    PubMed

    Puls, M

    1996-03-01

    In the introduction to this study, present state of the progress of tissue adhesives and their use in medicine is discussed. Synthetic adhesives and the fibrin system are described. The advantages and disadvantages of both types of adhesive are compared. The bioadhesive systems used in medicine must meet certain requirements necessary for their application. The composition and preparation of the fibrin adhesives are analyzed in detail. Their effect on the regeneration of tissue cells and the level of histotoxicity are very important. The characteristics of the fibrin adhesive system result from its physiological origin. The filling of the wound with these adhesives improves the natural processes of healing.

  13. Geothermal activity in Italy: present status and future prospects

    SciTech Connect

    Carella, R.; Palmerini, C.G.; Stefani, G.C.; Verdiani, G.

    1985-01-01

    In the Italian Peninsula the Apennines separate a relatively cold Po-Adriatic-Ionian ''foredeep'' external belt from a warmer Tyrrhenian ''back-arc'' internal tensional belt. The latter i characterized by high geothermal heat flow together with conspicuous recent or present-day volcani phenomena. In this area, extending from Tuscany to Campania, lie the known steam- and waterdominated fields. Other ''warm'' areas are located on some Tyrrhenian islands. Within the ''cold'' external belt, interesting locations for low enthalpy utilizations can be found in the Po river valley, particularly in the eastern part near Ferrara and Abano. Since 1977 ENEL (National Electri Energy Agency) and AGIP (State Oil Company) have been jointly conducting geothermal activities in Italy, with the exception of the Tuscan geothermal area where ENEL operates on an exclusive basis. At present the areas surveyed cover about 8250 kmS. As of December 1983 the geothermal installed capacity was 456.2 MW (net capacity 340 MW) and low-temperature geothermal resources equivalent to 100,000 OET /yr were being used. The National Energy Plant (PEN), issued on 4 December 1981, forecast for the year 1990 a geothermal power increment of 200 MW /SUB e/ above the 449.1 MW /SUB e/ already installed. The target in the low enthalpy non-electric sector is to save 300,000 OET/yr by 1990. This paper describes the activities carried out from March 1975 to December 1983 and the main projects in progress.

  14. Nanomaterials in the field of design ergonomics: present status.

    PubMed

    Chowdhury, Anirban; Sanjog, J; Reddy, Swathi Matta; Karmakar, Sougata

    2012-01-01

    Application of nanotechnology and nanomaterials is not new in the field of design, but a recent trend of extensive use of nanomaterials in product and/or workplace design is drawing attention of design researchers all over the world. In the present paper, an attempt has been made to describe the diverse use of nanomaterials in product and workplace design with special emphasis on ergonomics (occupational health and safety; thermo-regulation and work efficiency, cognitive interface design; maintenance of workplace, etc.) to popularise the new discipline 'nanoergonomics' among designers, design users and design researchers. Nanoergonomics for sustainable product and workplace design by minimising occupational health risks has been felt by the authors to be an emerging research area in coming years. Use of nanomaterials in the field of design ergonomics is less explored till date. In the present review, an attempt has been made to extend general awareness among ergonomists/designers about applications of nanomaterials/nanotechnology in the field of design ergonomics and about health implications of nanomaterials during their use.

  15. History and present status of pulmonary metastasectomy in colorectal cancer

    PubMed Central

    Treasure, Tom; Milošević, Mišel; Fiorentino, Francesca; Pfannschmidt, Joachim

    2014-01-01

    Clinical practice with respect to metastatic colorectal cancer differs from the other two most common cancers, breast and lung, in that routine surveillance is recommended with the specific intent of detecting liver and lung metastases and undertaking liver and lung resections for their removal. We trace the history of this approach to colorectal cancer by reviewing evidence for effectiveness from the 1950s to the present day. Our sources included published citation network analyses, the documented proposal for randomised trials, large systematic reviews, and meta-analysis of observational studies. The present consensus position has been adopted on the basis of a large number of observational studies but the randomised trials proposed in the 1980s and 1990s were either not done, or having been done, were not reported. Clinical opinion is the mainstay of current practice but in the absence of randomised trials there remains a possibility of selection bias. Randomised controlled trials (RCTs) are now routine before adoption of a new practice but RCTs are harder to run in evaluation of already established practice. One such trial is recruiting and shows that controlled trial are possible. PMID:25356017

  16. Neutron polycapillary optics: present status and future trends

    NASA Astrophysics Data System (ADS)

    Ioffe, A.

    2005-07-01

    Up to present, neutron applications of polycapillary optics have been rather rear and mostly limited either to feasibility studies or to non-scattering techniques. The practical use of polycapillary focusing neutron optics for purposes of neutron scattering have been hindered by a serious degradation of momentum resolution caused by increased divergence of focused beams. However, limited size of samples available for research as well as limited brightness of present day neutron sources (both reactors and spallation sources) requires to rethink the current situation. Neutron lenses are successfully tested for low Q-resolution applications providing an enormous increase of neutron flux at small samples. Moreover, some recent developments in the field of neutron instrumentation allow us to overcome the resolution problem by decoupling the angular resolution and the incident beam divergence thus opening the opportunity for the use of focusing neutron optics in some high Q-resolution application. Further advances in technology required to improve the performance of neutron polycapillary optics, also in combination with modem methods of polarization of neutron beams, are discussed.

  17. CRYRING@ESR: present status and future research

    NASA Astrophysics Data System (ADS)

    Lestinsky, M.; Bräuning-Demian, A.; Danared, H.; Engström, M.; Enders, W.; Fedotova, S.; Franzke, B.; Heinz, A.; Herfurth, F.; Källberg, A.; Kester, O.; Litvinov, Y.; Steck, M.; Reistad, D.; Simonsson, A.; Skeppstedt, Ö.; Stöhlker, T.; Vorobjev, G.; the CRYRING@ESR working Group

    2015-11-01

    The former storage ring CRYRING has been shipped from the Manne Siegbahn Laboratory in Stockholm to Darmstadt as a Swedish in-kind contribution to FAIR. At its new location downstream of ESR all ion species presently accessible in ESR can be transferred to CRYRING, in which ions with rigidities between 1.44 and 0.054 Tm can be stored. The original Swedish layout has been modified by reconfiguring the sequence of straight sections and by slightly increasing the circumference to ESR/2. Ions can be injected from ESR or from an independent 300 keV/u RFQ test injector. The instrumentation of the ring includes an RF drift tube system for acceleration and deceleration (1 T s-1, with a possibility for an upgrade to 7 T s-1), electron cooling, a free experimental section, and both fast and slow extraction of ions. We report on the present progress of this project, give a prospective timeline, and summarize the new research which will be enabled by this project. First beam for commissioning of the storage ring is expected for 2015, final bakeout to restore ultrahigh vacuum conditions in 2016 and ion beams injected through ESR in ˜2017.

  18. Turbulence modelling in CFD: Present status, future prospects

    NASA Technical Reports Server (NTRS)

    Launder, Brian E.

    1992-01-01

    Information is given in viewgraph form for turbulence modeling in computational fluid dynamics (CFD). The Eddy Viscosity Models (EVM), Algebraic Second Moment Closures (ASM), and Differential Second-Moment Closures (DSM) are considered. It is concluded that EVM's, ASM's, and DSM's will remain in use, though with a steady decline in importance of EVM's and ASM's in favor of DSM's. Improved versions of low-Re two-equation EVM's should lead to more reliable predictions of separated flows than are achievable at present. Further refinement of sub-models in second moment closures can be expected throughout this decade. There will be increasing attention given to interfacing SMC with higher order approaches such as LES, and an increased use of two-time-scale schemes providing distinct time scales for large and fairly small eddies.

  19. Status of marine pollution research in South Africa (1960-present).

    PubMed

    Wepener, V; Degger, N

    2012-07-01

    The published literature on marine pollution monitoring research in South Africa from 1960 to present was evaluated. There has been a general decline in the number of papers from the 1980s and this can be linked to the absence of a marine pollution monitoring programme in South Africa. General trends observed were that contaminant exposure monitoring of metals predominates the research conducted to date. Monitoring results indicate that there has been a general decrease in metal concentrations in South African coastal waters and concentrations of metals and most organics in mussels are lower than in other industrialised nations. This is reflected in the general pristine nature and high biodiversity of the South African coastline. The establishment of a national marine pollution monitoring framework would stimulate marine pollution research.

  20. Ayurvedic research and methodology: Present status and future strategies

    PubMed Central

    Chauhan, Ashutosh; Semwal, Deepak Kumar; Mishra, Satyendra Prasad; Semwal, Ruchi Badoni

    2015-01-01

    Ayurveda is a science of life with a holistic approach to health and personalized medicine. It is one of the oldest medical systems, which comprises thousands of medical concepts and hypothesis. Interestingly, Ayurveda has ability to treat many chronic diseases such as cancer, diabetes, arthritis, and asthma, which are untreatable in modern medicine. Unfortunately, due to lack of scientific validation in various concepts, this precious gift from our ancestors is trailing. Hence, evidence-based research is highly needed for global recognition and acceptance of Ayurveda, which needs further advancements in the research methodology. The present review highlights various fields of research including literary, fundamental, drug, pharmaceutical, and clinical research in Ayurveda. The review further focuses to improve the research methodology for Ayurveda with main emphasis on the fundamental research. This attempt will certainly encourage young researchers to work on various areas of research for the development and promotion of Ayurveda. PMID:27833362

  1. Immunotherapy for liver tumors: present status and future prospects

    PubMed Central

    Matar, Pablo; Alaniz, Laura; Rozados, Viviana; Aquino, Jorge B; Malvicini, Mariana; Atorrasagasti, Catalina; Gidekel, Manuel; Silva, Marcelo; Scharovsky, O Graciela; Mazzolini, Guillermo

    2009-01-01

    Increasing evidence suggests that immune responses are involved in the control of cancer and that the immune system can be manipulated in different ways to recognize and attack tumors. Progress in immune-based strategies has opened new therapeutic avenues using a number of techniques destined to eliminate malignant cells. In the present review, we overview current knowledge on the importance, successes and difficulties of immunotherapy in liver tumors, including preclinical data available in animal models and information from clinical trials carried out during the lasts years. This review shows that new options for the treatment of advanced liver tumors are urgently needed and that there is a ground for future advances in the field. PMID:19272130

  2. The Present Deployment Status of the MAGDAS Project

    NASA Astrophysics Data System (ADS)

    Maeda, G.; Yumoto, K.

    2012-12-01

    Since 2004, MAGDAS magnetometers have been deployed slowly but steadily throughout the world. The PI of the MAGDAS Project is Prof. K. Yumoto of the International Center for Space Weather Science and Education (Kyushu University). There are now 64 real time stations deployed throughout the world mainly in three key bands: 210 MM (Magnetic Meridian) Band, 96 MM Band, and Dip Equatorial Band. In this presentation, we summarize primarily the activities of the past 12 months for this project. This includes a new installation at Jayapura in Indonesia, and three new installations on the island of Sumatra (also Indonesia). In addition, a state-of-the-art MAGDAS 9 magnetometer was installed at Bac Lieu in the south of Vietnam.

  3. Present status of surgical intervention for children with intractable seizures.

    PubMed

    Depositario-Cabacar, Dewi T; Riviello, James J; Takeoka, Masanori

    2008-03-01

    We present a discussion of recent relevant publications in pediatric epilepsy surgery. In 1998, the Commission on Neurosurgery of the International League Against Epilepsy formed the Subcommission for Pediatric Epilepsy Surgery. Their proposed recommendations are included here. We also discuss updates on identification and selection of children with severe refractory epilepsy. Functional imaging has advanced in recent years as an important adjunct in identifying the epileptogenic zone during the preoperative evaluation. The newer imaging modalities are summarized. Routine positron emission tomography, positron emission tomography with special tracers, and single photon emission computed tomography have proven to be beneficial. Other newer investigative techniques await validation. A number of studies on postoperative outcomes over the past few years have demonstrated the benefits of early surgical treatment for selected children.

  4. Ayurvedic research and methodology: Present status and future strategies.

    PubMed

    Chauhan, Ashutosh; Semwal, Deepak Kumar; Mishra, Satyendra Prasad; Semwal, Ruchi Badoni

    2015-01-01

    Ayurveda is a science of life with a holistic approach to health and personalized medicine. It is one of the oldest medical systems, which comprises thousands of medical concepts and hypothesis. Interestingly, Ayurveda has ability to treat many chronic diseases such as cancer, diabetes, arthritis, and asthma, which are untreatable in modern medicine. Unfortunately, due to lack of scientific validation in various concepts, this precious gift from our ancestors is trailing. Hence, evidence-based research is highly needed for global recognition and acceptance of Ayurveda, which needs further advancements in the research methodology. The present review highlights various fields of research including literary, fundamental, drug, pharmaceutical, and clinical research in Ayurveda. The review further focuses to improve the research methodology for Ayurveda with main emphasis on the fundamental research. This attempt will certainly encourage young researchers to work on various areas of research for the development and promotion of Ayurveda.

  5. Turbulence modelling in CFD: Present status, future prospects

    NASA Technical Reports Server (NTRS)

    Launder, Brian E.

    1992-01-01

    Information is given in viewgraph form for turbulence modeling in computational fluid dynamics (CFD). The Eddy Viscosity Models (EVM), Algebraic Second Moment Closures (ASM), and Differential Second-Moment Closures (DSM) are considered. It is concluded that EVM's, ASM's, and DSM's will remain in use, though with a steady decline in importance of EVM's and ASM's in favor of DSM's. Improved versions of low-Re two-equation EVM's should lead to more reliable predictions of separated flows than are achievable at present. Further refinement of sub-models in second moment closures can be expected throughout this decade. There will be increasing attention given to interfacing SMC with higher order approaches such as LES, and an increased use of two-time-scale schemes providing distinct time scales for large and fairly small eddies.

  6. Long-term nuclear waste management: Present status and alternatives

    NASA Astrophysics Data System (ADS)

    Schapira, J. P.

    1989-08-01

    Long-term nuclear waste management deals with the final and irreversible stage of waste disposal, on surface and in deep geological formations (according to the waste type), when institutional surveillance is over. There are presently two main options available to deal with the wastes generated by spent nuclear fuel unloaded from reactors and containing most of the radiotoxicity produced all along the nuclear fuel cycle. Since the end of Word War II, spent-fuel reprocessing technology has gone through three different stages, ending up with considerable technical achievements and large investments (construction of large facilities, UP3 in France and THORP in the UK). However, having to face spent-fuel risings and lack of reprocessing capacities, since the mid-seventies some countries are considering the possibility of direct spent-fuel disposal without reprocessing. These two options are discussed in terms of long-term waste management. Because of the types of waste conditioning and packaging adopted with present reprocessing technology, in that case long-term safety, after a few centuries, relies completely on the geological barriers. On the other hand, long-term safety with the second option is based essentially on the retention properties of uranium oxide with respect to actinides. Finally, alternatives such as chemical partitioning of minor actinides followed by their transmutation, either in reactors or using high-energy particle accelerators, are under discussion. Apart from the standard reprocessing (after a cooling period of 3-5 years), all the other options called for a long period (50 years) of interim storage, preventing the adoption of irreversible, costly and not well proved waste management solutions, and leaving time to develop and assess these alternative methods.

  7. Zygomycetes-based biorefinery: present status and future prospects.

    PubMed

    Ferreira, Jorge A; Lennartsson, Patrik R; Edebo, Lars; Taherzadeh, Mohammad J

    2013-05-01

    Fungi of the phylum Zygomycetes fulfil all requirements for being utilized as core catalysts in biorefineries, and would be useful in creating new sustainable products. Apart from the extended use of Zygomycetes in preparing fermented foods, industrial metabolites such as lactic acid, fumaric acid, and ethanol are produced from a vast array of feedstocks with the aid of Zygomycetes. These fungi produce enzymes that facilitate their assimilation of various complex substrates, e.g., starch, cellulose, phytic acid, and proteins, which is relevant from an industrial point of view. The enzymes produced are capable of catalyzing various reactions involved in biodiesel production, preparation of corticosteroid drugs, etc. Biomass produced with the aid of Zygomycetes consists of proteins with superior amino acid composition, but also lipids and chitosan. The biomass is presently being tested for animal feed purposes, such as fish feed, as well as for lipid extraction and chitosan production. Complete or partial employment of Zygomycetes in biorefining procedures is consequently attractive, and is expected to be implemented within a near future.

  8. Present Status of the ILC Project and Development

    SciTech Connect

    Ross, M.; Walker, N.; Yamamoto, A.; /KEK, Tsukuba

    2011-09-01

    The Technical Design of the International Linear Collider (ILC) Project will be finished in late 2012. The Technical Design Report (TDR) will include a description of the updated design, with a cost estimate and a project plan, and the results of research and development (R & D) done in support of the ILC. Results from directed ILC R & D are used to reduce the cost and risk associated with the ILC design. We present a summary of key challenges and show how the global R & D effort has addressed them. The most important activity has been in pursuit of very high gradient superconducting RF linac technology. There has been excellent progress toward the goal of practical industrial production of niobium sheet-metal cavities with gradient performance in excess of 35 MV/m. In addition, three purpose-built beam test facilities have been constructed and used to study and demonstrate high current linac performance, electron-cloud beam dynamics and precision beam control. The report also includes a summary of component design studies and conventional facilities cost optimization design studies.

  9. EUV lithography development in Europe: present status and perspectives

    NASA Astrophysics Data System (ADS)

    Ceccotti, Tiberio

    2004-01-01

    According to the ISMT roadmap, Extreme Ultraviolet lithography (EUVL) is the most promising technology to reach the 45-nm node for industrial production and to satisfy the famous law of Moore beyond 2007. Already in 1998 the first European EUVL project (EUCLIDES) has been launched under the leadership of ASM Lithography. Shortly after that in 1999, the national R&D program PREUVE started in France to improve EUVL related technologies and to build the first experimental lithography bench (BEL) in Europe. Finally, in 2001, the main European industrial companies as well as academic and national laboratories have federated within the important MEDEA+ effort to overcome the main technological challenges and to industrialize EUVL in time. Indeed, one of the most important challenges of EUVL concerns the achievement of very powerful, clean and reliable sources. The present paper will give the current state of European EUVL source technology and an overview of the different approaches. Main results are reviewed and the remaining challenges are discussed.

  10. [Screening for prostate cancer: present status and future perspectives].

    PubMed

    Ito, Kazuto

    2014-12-01

    In Japan, about three fourth municiparities and 90% human dry dock (a thorough medical checkup) institutions provide a prostate specific antigen (PSA) testing as a screening tool for early detection of prostate cancer. However, the exposure of screening for prostate cancer is very low compared to developed Western countries. The merits of introducing PSA-based screening could be cause-specific mortality reduction and prevention of developing metastatic disease, which was recently confirmed by prospective randomized controlled trials. On the other hand, some men participating in the screening program may be of drawbacks in terms of overdetection and overtreatment. Therefore, providing a fact sheet on screening for prostate cancer and also providing an optimal screening system including more accurate cancer detection, minimally invasive treatment and active surveillance strategy, which can reduce overdetection, overtreatment, and loss of QOL due to treatment, would be very important. The merits of PSA screening will increase and the drawbacks will decrease in the future due to progress in the diagnostic modalities and treatment strategies. At present, a baseline consensus is to conduct PSA-based screening according to well-balanced guidelines published by the Japanese Urological Association.

  11. Present Status and Future Developments in Proton Therapy

    NASA Astrophysics Data System (ADS)

    Smith, Alfred R.

    2009-07-01

    Within the past few years, interest in proton therapy has significantly increased. This interest has been generated by a number of factors including: 1) the reporting of positive clinical results using proton beams; 2) approval of reimbursement for delivery of proton therapy; 3) the success of hospital-based proton therapy centers; and 4) the availability of modern, integrated proton therapy technology for hospital-based facilities. In the United States, this increased interest has occurred particularly at the level of smaller academic hospitals, community medical centers, and large private practices; however, interest from large academic centers continues to be strong. Particular interest exists regarding smaller and less-expensive proton therapy systems, especially the so-called "single-room" systems. In this paper, the advantages and disadvantages of 1-room proton therapy systems will be discussed. The emphasis on smaller and cheaper proton therapy facilities has also generated interest in new proton-accelerating technologies such as superconducting cyclotrons and synchrocyclotrons, laser acceleration, and dielectric-wall accelerators. Superconducting magnets are also being developed to decrease the size and weight of isocentric gantries. Another important technical development is spot-beam scanning, which offers the ability to deliver intensity-modulated proton treatments (IMPT). IMPT has the potential to provide dose distributions that are superior to those for photon intensity modulation techniques (IMXT) and to improve clinical outcomes for patients undergoing cancer therapy. At the present time, only two facilities—one in Europe and one in the United States—have the ability to deliver IMPT treatments, however, within the next year or two several additional facilities are expected to achieve this capability.

  12. Present Status and Future Developments in Proton Therapy

    SciTech Connect

    Smith, Alfred R.

    2009-07-25

    Within the past few years, interest in proton therapy has significantly increased. This interest has been generated by a number of factors including: 1) the reporting of positive clinical results using proton beams; 2) approval of reimbursement for delivery of proton therapy; 3) the success of hospital-based proton therapy centers; and 4) the availability of modern, integrated proton therapy technology for hospital-based facilities. In the United States, this increased interest has occurred particularly at the level of smaller academic hospitals, community medical centers, and large private practices; however, interest from large academic centers continues to be strong. Particular interest exists regarding smaller and less-expensive proton therapy systems, especially the so-called 'single-room' systems. In this paper, the advantages and disadvantages of 1-room proton therapy systems will be discussed. The emphasis on smaller and cheaper proton therapy facilities has also generated interest in new proton-accelerating technologies such as superconducting cyclotrons and synchrocyclotrons, laser acceleration, and dielectric-wall accelerators. Superconducting magnets are also being developed to decrease the size and weight of isocentric gantries. Another important technical development is spot-beam scanning, which offers the ability to deliver intensity-modulated proton treatments (IMPT). IMPT has the potential to provide dose distributions that are superior to those for photon intensity modulation techniques (IMXT) and to improve clinical outcomes for patients undergoing cancer therapy. At the present time, only two facilities--one in Europe and one in the United States--have the ability to deliver IMPT treatments, however, within the next year or two several additional facilities are expected to achieve this capability.

  13. Status of pharmacy practice experience education programs.

    PubMed

    Danielson, Jennifer; Eccles, Dayl; Kwasnik, Abigail; Craddick, Karen; Heinz, Andrew K; Harralson, Arthur F

    2014-05-15

    To assess financial, personnel, and curricular characteristics of US pharmacy practice experiential education programs and follow-up on results of a similar survey conducted in 2001. Experiential education directors at 118 accredited US pharmacy colleges and schools were invited to participate in a blinded, Web-based survey in 2011. Aggregate responses were analyzed using descriptive statistics and combined with data obtained from the American Association of Colleges of Pharmacy to assess program demographics, faculty and administrative organizational structure, and financial support. The number of advanced pharmacy practice experience (APPE) sites had increased by 24% for medium, 50% for large, and 55% for very large colleges and schools. Introductory pharmacy practice experience (IPPE) sites outnumbered APPEs twofold. The average experiential education team included an assistant/associate dean (0.4 full-time equivalent [FTE]), a director (1.0 FTE), assistant/associate director (0.5 FTE), coordinator (0.9 FTE), and multiple administrative assistants (1.3 FTE). Most faculty members (63%-75%) were nontenure track and most coordinators (66%) were staff members. Estimated costs to operate an experiential education program represented a small percentage of the overall expense budget of pharmacy colleges and schools. To match enrollment growth, pharmacy practice experiential education administrators have expanded their teams, reorganized responsibilities, and found methods to improve cost efficiency. These benchmarks will assist experiential education administrators to plan strategically for future changes.

  14. Status and prospects of the JUNO experiment

    NASA Astrophysics Data System (ADS)

    Ranucci, Gioacchino; JUNO Collaboration

    2017-09-01

    The JUNO (Jiangmen Underground Neutrino Observatory), a 20 kton multi-purpose underground liquid scintillator detector, has been proposed and approved for realization in the south of China. After an intense design phase, the overall concept of the structure of the detector has been finalized, paving the way towards the construction of the several components and subsystems, which will compose it. Meanwhile, the excavation of the site which will host the experiment has been started and is rapidly progressing. The main physics target of JUNO is the determination of the neutrino mass hierarchy, which will be accessible through the measurement of the antineutrino spectrum from two high power nuclear complexes under installation 53 km away from the experimental site. In this work, after the description of the broad physics capabilities of the experiment, which include in addition to the crucial measure of the neutrino hierarchy the high precision determination of three oscillation parameters, as well as a rich astroparticle program, I illustrate the technical characteristics of the detector, with particular emphasis on the technological challenges which are being addressed along the path towards its realization.

  15. Analysis status of the Q-weak experiment

    NASA Astrophysics Data System (ADS)

    Kargiantoulakis, Emmanouil; Q-weak Collaboration

    2015-04-01

    The Q-weak Collaboration completed a challenging measurement of the parity-violating asymmetry in elastic electron-proton scattering at the Thomas Jefferson National Accelerator Facility (JLab). The initial result reported here is extracted from the commissioning part of the experiment, constituting about 4% of the full data set, and allowed for the first determination of the weak charge of the proton. The analysis of the full Q-weak data set is ongoing and expected to yield a high precision value for the weak charge, which will place significant constraints to models of physics beyond the standard model. The current status will be presented, with emphasis on analysis efforts to reduce the most important systematic uncertainties of the preliminary result.

  16. Refractory status epilepticus and glutamic acid decarboxylase antibodies in adults: presentation, treatment and outcomes.

    PubMed

    Khawaja, Ayaz M; Vines, Brannon L; Miller, David W; Szaflarski, Jerzy P; Amara, Amy W

    2016-03-01

    Glutamic acid decarboxylase antibodies (GAD-Abs) have been implicated in refractory epilepsy. The association with refractory status epilepticus in adults has been rarely described. We discuss our experience in managing three adult patients who presented with refractory status epilepticus associated with GAD-Abs. Case series with retrospective chart and literature review. Three patients without pre-existing epilepsy who presented to our institution with generalized seizures between 2013 and 2014 were identified. Seizures proved refractory to first and second-line therapies and persisted beyond 24 hours. Patient 1 was a 22-year-old female who had elevated serum GAD-Ab titres at 0.49 mmol/l (normal: <0.02) and was treated with multiple immuno- and chemotherapies, with eventual partial seizure control. Patient 2 was a 61-year-old black female whose serum GAD-Ab titre was 0.08 mmol/l. EEG showed persistent generalized periodic discharges despite maximized therapy with anticonvulsants but no immunotherapy, resulting in withdrawal of care and discharge to nursing home. Patient 3 was a 50-year-old black female whose serum GAD-Ab titre was 0.08 mmol/l, and was discovered to have pulmonary sarcoidosis. Treatment with steroids and intravenous immunoglobulin resulted in seizure resolution. Due to the responsiveness to immunotherapy, there may be an association between GAD-Abs and refractory seizures, including refractory status epilepticus. Causation cannot be established since GAD-Abs may be elevated secondary to concurrent autoimmune diseases or formed de novo in response to GAD antigen exposure by neuronal injury. Based on this report and available literature, there may be a role for immuno- and chemotherapy in the management of refractory status epilepticus associated with GAD-Abs.

  17. The molecular electronic device and the biochip computer: present status.

    PubMed

    Haddon, R C; Lamola, A A

    1985-04-01

    The idea that a single molecule might function as a self-contained electronic device has been of interest for some time. However, a fully integrated version--the biochip or the biocomputer, in which both production and assembly of molecular electronic components is achieved through biotechnology-is a relatively new concept that is currently attracting attention both within the scientific community and among the general public. In the present article we draw together some of the approaches being considered for the construction of such devices and delineate the revolutionary nature of the current proposals for molecular electronic devices (MEDs) and biochip computers (BCCs). With the silicon semiconductor conductor industry already in place and in view of the continuing successes of the lithographic process it seems appropriate to ask why the highly speculative MED or BCC has engendered such interest. In some respects the answer is paradigmatic as much as it is real. It is perhaps best stated as the promise of the realm of the molecular. Thus it is envisioned that devices will be constructed by assembly of individual molecular electronic components into arrays, thereby engineering from small upward rather than large downward as do current lithographic techniques. An important corollary of the construction technique is that the functional elements of such an array would be individual molecules rather than macroscopic ensembles. These two aspects of the MED/BCC--assembly of molecular arrays and individually accessible functional molecular units--are truly revolutionary. Both require scientific breakthroughs and the necessary principles, quite apart from the technology, remain essentially unknown. It is concluded that the advent of the MED/BCC still lies well before us. The twin criteria of utilization of individual molecules as functional elements and the assembly of such elements remains as elusive as ever. Biology engineers structures on the molecular scale but

  18. The molecular electronic device and the biochip computer: present status.

    PubMed Central

    Haddon, R C; Lamola, A A

    1985-01-01

    The idea that a single molecule might function as a self-contained electronic device has been of interest for some time. However, a fully integrated version--the biochip or the biocomputer, in which both production and assembly of molecular electronic components is achieved through biotechnology-is a relatively new concept that is currently attracting attention both within the scientific community and among the general public. In the present article we draw together some of the approaches being considered for the construction of such devices and delineate the revolutionary nature of the current proposals for molecular electronic devices (MEDs) and biochip computers (BCCs). With the silicon semiconductor conductor industry already in place and in view of the continuing successes of the lithographic process it seems appropriate to ask why the highly speculative MED or BCC has engendered such interest. In some respects the answer is paradigmatic as much as it is real. It is perhaps best stated as the promise of the realm of the molecular. Thus it is envisioned that devices will be constructed by assembly of individual molecular electronic components into arrays, thereby engineering from small upward rather than large downward as do current lithographic techniques. An important corollary of the construction technique is that the functional elements of such an array would be individual molecules rather than macroscopic ensembles. These two aspects of the MED/BCC--assembly of molecular arrays and individually accessible functional molecular units--are truly revolutionary. Both require scientific breakthroughs and the necessary principles, quite apart from the technology, remain essentially unknown. It is concluded that the advent of the MED/BCC still lies well before us. The twin criteria of utilization of individual molecules as functional elements and the assembly of such elements remains as elusive as ever. Biology engineers structures on the molecular scale but

  19. The Molecular Electronic Device and the Biochip Computer: Present Status

    NASA Astrophysics Data System (ADS)

    Haddon, R. C.; Lamola, A. A.

    1985-04-01

    The idea that a single molecule might function as a self-contained electronic device has been of interest for some time. However, a fully integrated version--the biochip or the biocomputer, in which both production and assembly of molecular electronic components is achieved through biotechnology--is a relatively new concept that is currently attracting attention both within the scientific community and among the general public. In the present article we draw together some of the approaches being considered for the construction of such devices and delineate the revolutionary nature of the current proposals for molecular electronic devices (MEDs) and biochip computers (BCCs). With the silicon semiconductor industry already in place and in view of the continuing successes of the lithographic process it seems appropriate to ask why the highly speculative MED or BCC has engendered such interest. In some respects the answer is paradigmatic as much as it is real. It is perhaps best stated as the promise of the realm of the molecular. Thus it is envisioned that devices will be constructed by assembly of individual molecular electronic components into arrays, thereby engineering from small upward rather than large downward as do current lithographic techniques. An important corollary of the construction technique is that the functional elements of such an array would be individual molecules rather than macroscopic ensembles. These two aspects of the MED/BCC--assembly of molecular arrays and individually accessible functional molecular units--are truly revolutionary. Both require scientific breakthroughs and the necessary principles, quite apart from the technology, remain essentially unknown. It is concluded that the advent of the MED/BCC still lies well before us. The twin criteria of utilization of individual molecules as functional elements and the assembly of such elements remains as elusive as ever. Biology engineers structures on the molecular scale but biomolecules

  20. The Current Status of the WARP Experiment

    NASA Astrophysics Data System (ADS)

    Szelc, A. M.; Benetti, P.; Calligarich, E.; Calaprice, F.; Cambiaghi, M.; Carbonara, F.; Cavanna, F.; Cocco, A. G.; Dipompeo, F.; Ferrari, N.; Fiorillo, G.; Galbiati, C.; Grandi, L.; Mangano, G.; Montanari, C.; Palamara, O.; Pandola, L.; Rappoldi, A.; Raselli, G. L.; Roncadelli, M.; Rossella, M.; Rubbia, C.; Santorelli, R.; Vignoli, C.; Zhao, Y.

    2006-07-01

    The WARP detector is a new idea in Dark Matter detection using liquid noble gases, specifically argon. We believe that argon is the medium best suited to detect nuclear recoils coming from interactions with the so called WIMPs (Weakly Interacting Massive Particles). The detection technique, using two different discrimination methods, is capable of an identification power as high as one event in 108. During the second half of the year 2006 the next, 100 liter, detector will be constructed with an active veto shield to further suppress the background, while currently a 2.3 liter prototype, installed in the Gran Sasso Laboratory (Italy), has been taking data since May 2004. The small version of the detector is able to not only provide insight on the operation of a two-phase liquid argon chamber but is also able to provide physics results competitive with the current leading edge experiments.

  1. Status and plans of the LUCIFER Experiment

    NASA Astrophysics Data System (ADS)

    Orio, F.

    2011-06-01

    Neutrinoless Double Beta Decay searches are the only way to give an answer to the neutrino mass nature, Dirac or Majorana. These experiments are extremely delicate and the greatest obstacle to improve their sensitivity is the background level that can be achieved. LUCIFER is a project, financed by a ERC-AdG, that would like to build a demonstrator of a technique based on the double read-out (scintillation light + heat) of ZnSe crystals used as bolometers. The goal is to reach a background lower than 0.001 counts/kg/keV/year. Along the way we would like to learn how practical is the enrichment of Se into 82Se, how efficient is the process of crystallization and how radiopure the crystals can be grown. In this talk we will discuss the properties of ZnSe crystals and sketch the layout of the project.

  2. Status of the NOvA Experiment

    NASA Astrophysics Data System (ADS)

    Perevalov, Denis

    2012-08-01

    NOvA is an off-axis long baseline neutrino experiment searching for νμ → νe oscillations using an upgraded NuMI neutrino beam from Fermilab, Batavia, IL. The main physics goal is a measurement or strong limit on the neutrino mixing angle θ13. For sufficiently large values of θ13, NOvA will also be sensitive to measuring CP violation and establishing the neutrino masses hierarchy. A large 14 kton Far detector, comprised of liquid scintillator contained in extruded PVC cells, will also provide an opportunity for other non-accelerator physics searches. While civil construction at the far detector is underway, a smaller prototype near detector has been assembled at Fermilab and is being studied.

  3. Status of the KATRIN neutrino mass experiment

    NASA Astrophysics Data System (ADS)

    Martin, Eric; Katrin Collaboration

    2016-09-01

    The upcoming Karlsruhe Tritium Neutrino (KATRIN) experiment aims to explore neutrino mass down to 0.2 eV/c2 (90% CL) by measuring the shape of the tritium beta decay spectrum. Using magnetic adiabatic collimation with an electrostatic filter (MAC-E filter) KATRIN will measure the electron kinetic energy spectrum with a resolution better than one part in 104. All major components are on site and commissioning is underway, with first tritium data currently scheduled for 2017. The measurement technique will be explained along with an update on commissioning progress. This material is based upon work supported by the U.S. Department of Energy Office of Science, Office of Nuclear Physics under Award Number DE-FG02-97ER41020.

  4. Dural Arteriovenous Fistula Presenting with Status Epilepticus Treated Successfully with Endovascular Intervention.

    PubMed

    Lee, Chun-Yu; Yeh, Shin-Joe; Tsai, Li-Kai; Tang, Sung-Chun; Jeng, Jiann-Shing

    2015-06-01

    Status epilepticus was rarely reported as the initial manifestation of intracranial dural arteriovenous fistulas. Successful treatment with endovascular intervention has not been reported in the literature. We report three cases of dural arteriovenous fistulas initially presenting with various types of status epilepticus, including generalized tonic-clonic status epilepticus, complex partial status epilepticus, and nonconvulsive status epilepticus. The status epilepticus of these patients was successfully terminated through aggressive endovascular intervention in conjunction with antiepileptic drugs. These cases highlight the importance of intracranial dural arteriovenous fistulas in diagnosing patients with status epilepticus. Moreover, directly treating dural arteriovenous fistulas plays a crucial role in addition to anti-epileptic drugs therapy in controlling seizures in patients with dural arteriovenous fistulas related status epilepticus.

  5. The Status of the Cms Experiment

    NASA Astrophysics Data System (ADS)

    Green, Dan

    The CMS experiment was completely assembled in the fall of 2008 after a decade of design, construction and installation. During the last two years, cosmic ray data were taken on a regular basis. These data have enabled CMS to align the detector components, both spatially and temporally. Initial use of muons has also established the relative alignment of the CMS tracking and muon systems. In addition, the CMS calorimetry has been crosschecked with test beam data, thus providing an initial energy calibration of CMS calorimetry to about 5%. The CMS magnet has been powered and field mapped. The trigger and data acquisition systems have been installed and run at full speed. The tiered data analysis system has been exercised at full design bandwidth for Tier0, Tier1 and Tier2 sites. Monte Carlo simulation of the CMS detector has been constructed at a detailed geometric level and has been tuned to test beam and other production data to provide a realistic model of the CMS detector prior to first collisions.

  6. The status of the CMS experiment

    SciTech Connect

    Green, Dan; /Fermilab

    2009-01-01

    The CMS experiment was completely assembled in the fall of 2008 after a decade of design, construction and installation. During the last two years, cosmic ray data were taken on a regular basis. These data have enabled CMS to align the detector components, both spatially and temporally. Initial use of muons has also established the relative alignment of the CMS tracking and muon systems. In addition, the CMS calorimetry has been crosschecked with test beam data, thus providing an initial energy calibration of CMS calorimetry to about 5%. The CMS magnet has been powered and field mapped. The trigger and data acquisition systems have been installed and run at full speed. The tiered data analysis system has been exercised at full design bandwidth for Tier0, Tier1 and Tier2 sites. Monte Carlo simulation of the CMS detector has been constructed at a detailed geometric level and has been tuned to test beam and other production data to provide a realistic model of the CMS detector prior to first collisions.

  7. Status of the KOTO experiment at J-PARC

    NASA Astrophysics Data System (ADS)

    Beckford, Brian

    2017-01-01

    The K0TO experiment conducted at J-PARC was designed to observe the KL0-->π0 ν ν decay and measure its branching ratio. The current SM prediction for the branching ratio is 3.0 x 10-11 with a small theoretical uncertainty of about 2-3 As a result of the favorable outcome of KEK E391, the K0TO experiment is intended to pursue the search with increased beam power, an upgraded data acquisition system, and improved detector hardware. The signature of the decay is a pair of photons from the π0 decay and no other detected particles. For the measurement of the energies and positions of the photons, K0TO uses a Cesium Iodide (CSI) electromagnetic calorimeter as the main detector, and hermetic veto counters to guarantee that there are no other detected particles. The initial data was collected in 2013, followed by additional runs in 2015-2016 at beam powers of 24 and 40 kW, respectively. In this talk, we present a description of the upgrades and improvements to the detector, present status, and the latest results. For the K0TO collaboration.

  8. Status of the EXO-200 double beta decay experiment

    NASA Astrophysics Data System (ADS)

    Mackay, Derek

    2008-10-01

    The EXO collaboration is presently constructing and commissioning the world's largest search for neutrinoless double beta decay. The centerpiece of this experiment, known as EXO-200, is 200 kilograms of xenon enriched to 80% in Xenon-136. The xenon is cooled to 170 K, where it liquefies, and is held in a thin copper vessel inside several layers radioactive shielding. Ionizing events in the liquid xenon produce a charge signal which we observe on a segmented anode and a scintillation signal which is collected by array of avalanche photodiodes (APDs). The detector measures the three dimensional event location and the energy of the individual charge deposits, and it can distinguish between multiple-site Compton scattering events and single-site signal candidates. The experiment is located underground at the WIPP facility in Carlsbad, New Mexico, and is currently undergoing final commissioning in preparation for physics data taking. We will present in this talk the current status of our preparations and our expected neutrino mass sensitivity.

  9. CMS Tracker upgrade for HL-LHC: R&D plans, present status and perspectives

    NASA Astrophysics Data System (ADS)

    Ravera, F.; CMS Collaboration

    2016-07-01

    During the high luminosity phase of the LHC (HL-LHC), the machine is expected to deliver an instantaneous luminosity of 5 ×1034cm-2s-1. A total of 3000 fb-1 of data is foreseen to be delivered, with the opening of new physics potential for the LHC experiments, but also new challenges from the point of view of both detector and electronics capabilities and radiation hardness. In order to maintain its physics reach, CMS will build a new Tracker, including a completely new Pixel Detector and Outer Tracker. The ongoing R&D activities on both pixel and strip sensors will be presented. The present status of the Inner and Outer Tracker projects will be illustrated, and the possible perspectives will be discussed.

  10. Operating experience and construction status of ATLAS

    SciTech Connect

    Pardo, R.C.; DenHartog, P.; Shepard, K.W.; Zinkann, G.

    1984-01-01

    The present Argonne Tandem-Linac accelerator has operated in a reliable manner during the past year. The accelerator system provided 4402 hours of experimental beam time with a wide variety of heavy-ions. Figure 1 shows the beams which have been provided during the past year. New beams accelerated by the linac include 300 MeV /sup 82/Se and 390 MeV /sup 109/Ag. In tests, the tandem accelerated 102 MeV /sup 127/I. This is the heaviest beam ever accelerated by the Argonne tandem. The long-term performance of the niobium resonators appears to be good. No significant degradation of performance has been observed for most resonators over many years of use with the exceptions of problems caused by catastrophic vacuum accidents. Resonators whose performance has deteriorated after vacuum accidents have recently been restored to their original performance state by a simple technique. The technique used is to rinse the interior of the resonator with a sequence of baths of solvents and water.

  11. Research Status of IEC Experiments at NASA Marshall

    NASA Technical Reports Server (NTRS)

    Dobson, Chris; Hrbud, Ivana; Rodgers, Stephen L. (Technical Monitor)

    2002-01-01

    This presentation provides an overview of IEC (Inertial Electrostatic Confinement) research and experiments at NASA's Marshall Space Flight Center. Topics covered include: apparatus involvement, iec schematics, iec plasma images, iec deuterium experiments, thomson scattering, detector options and experiment results.

  12. Alumni Attitudes: Men and Women's Descriptions of Their College Experience, Present Work, and Present Recreational Activities.

    ERIC Educational Resources Information Center

    Jaynes, William E.; And Others

    Alumni attitudes concerning their college experience, present work, and present recreational activities were analyzed in relation to the time in college, using a semantic differential format. Four items were used for each type of rating, one evaluative, another activity-oriented, and two potency oriented. The evaluation dimension concerns the…

  13. Status of U.S. FCEV and Infrastructure Learning Demonstration Project (Presentation)

    SciTech Connect

    Wipke, K.; Sprik, S.; Kurtz, J.; Ramsden, T.; Ainscough, C.; Saur, G.

    2011-03-01

    Presented at the Japan Hydrogen and Fuel Cell Demonstration Project (JHFC), 1 March 2011, Tokyo, Japan. This presentation summarizes the status of U.S. fuel cell electric vehicles and infrastructure learning demonstration project.

  14. Status and Plan of the ISS-CREAM Experiment

    NASA Astrophysics Data System (ADS)

    Picot-Clemente, Nicolas; Iss-Cream Collaboration

    2016-03-01

    The Cosmic Ray Energetics and Mass (CREAM) project began as a balloon-borne experiment, which was flown successfully for 161 days in six flights over Antarctica. It was subsequently reconfigured for implementation on the International Space Station (ISS) to provide an order of magnitude increase in the exposure time with no atmospheric overburden. The ISS-CREAM instrument is configured of four subsystems: four layers of silicon charge detector (SCD) for charge measurements, top and bottom counting detectors (TCD/BCD) for electron/proton separation, a calorimeter (CAL) for energy measurements, and a boronated scintillator detector (BSD) for additional electron/proton distinction. CREAM is designed to investigate cosmic-ray origin, acceleration, and propagation by directly measuring individual particles with energy between 1012-1015eV and determining cosmic ray composition from protons to iron. The hardware was successfully tested, and remote monitoring and control capabilities were verified. It is scheduled for launch in 2016. The status and plan of the ISS-CREAM experiment will be presented.

  15. The Present Status of Global Mission Trips in Plastic Surgery Residency Programs.

    PubMed

    Ho, Trung; Bentz, Mike; Brzezienski, Mark; Gosman, Amanda; Ingraham, John; Wong, Michael S; Verheyden, Charles

    2015-06-01

    The present status of global mission trips of all of the academic Plastic Surgery programs was surveyed. We aimed to provide information and guidelines for other interested programs on creating a global health elective in compliance with American Board of Plastic Surgery (ABPS) and Accreditation Council for Graduate Medical Education Residency Review Committee (ACGME/RRC) requirements. A free-response survey was sent to all of the Plastic Surgery Residency program directors inquiring about their present policy on international mission trips for residents and faculty. Questions included time spent in mission, cases performed, sponsoring organizations, and whether cases are being counted in their resident Plastic Surgery Operative Logs (PSOL). Thirty-one programs responded, with 23 programs presently sponsoring international mission trips. Thirteen programs support residents going on nonprogram-sponsored trips where the majority of these programs partner with outside organizations. Many programs do not count cases performed on mission trips as part of ACGME index case requirement. Application templates for international rotations to comply with ABPS and ACGME/RRC requirements were created to facilitate the participation of interested programs. Many Plastic Surgery Residency programs are sponsoring international mission trips for their residents; however, there is a lack of uniformity and administrative support in pursuing these humanitarian efforts. The creation of a dynamic centralized database will help interested programs and residents seek out the global health experience they desire and ensure standardization of the educational experience they obtain during these trips.

  16. Adolescent Sexuality Related Beliefs and Differences by Sexual Experience Status

    ERIC Educational Resources Information Center

    Tolma, Eleni L.; Oman, Roy F.; Vesely, Sara K.; Aspy, Cheryl B.; Rodine, Sharon; Marshall, LaDonna; Fluhr, Janene

    2007-01-01

    Purpose: To examine if attitudes toward premarital sex, beliefs about peer influence, and family communication about sexual relationships differ by sexual experience status. Methods: Data were collected from a randomly selected ethnically diverse youth sample (N = 1,318) residing in two Midwestern cities. The primary method used in data analysis…

  17. The QUIJOTE experiment: project status and first scientific results

    NASA Astrophysics Data System (ADS)

    Rubiño-Martín, J. A.; Génova-Santos, R.; Rebolo, R.; Aguiar, Cózar-Castellano, J. M.; Gómez-Reñasco, F.; Gutiérrez, C.; Hoyland, R. J.; López-Caraballo, C.; Peláez-Santos, A. E.; Pérez-de-Taoro, M. R.; Poidevin, F.; Ruiz-Granados, B.; Sánchez de la Rosa, V.; Tramonte, D.; Vega-Moreno, A.; Viera-Curbelo, T.; Vignaga, R.; Martínez-González, E.; Barreiro, R. B.; Casaponsa, B.; Casas, F. J.; Diego, J. M.; Fernández-Cobos, R.; Herranz, D.; López-Caniego, M.; Ortiz, D.; Vielva, P.; Artal, E.; Aja, B.; Cagigas, J.; Cano, J. L.; de la Fuente, J.; Mediavilla, A.; Terán, J. V.; Villa, E.; Piccirillo, L.; Dickinson, C.; Grainge, K.; Harper, S.; Maffei, B.; McCulloch, M.; Melhuish, S.; Pisano, G.; Watson, R. A.; Lasenby, A.; Ashdown, M.; Perrott, Y.; Razavi-Ghods, N.; Titterington, D.; Scott, P.

    2017-03-01

    We present the current status of the QUIJOTE (Q-U-I JOint TEnerife) experiment, a new polarimeter with the aim of characterizing the polarization of the Cosmic Microwave Background, and other galactic or extra-galactic physical processes that emit in microwaves in the frequency range 10-42 GHz, and at largeangular scales (around 1 degree resolution). The experiment has been designed to reach the required sensitivity to detect a primordial gravitational wave component in the CMB, provided its tensor-to-scalar ratio is larger than r˜0.05. The project consists of two telescopes and three instruments which will survey a large sky area from the Teide Observatory to provide I, Q and U maps of high sensitivity. The first QUIJOTE instrument, known as Multi-Frequency Instrument (MFI), has been surveying the northern sky in four individual frequencies between 10 and 20 GHz since November 2012, providing data with an average sensitivity of 80 μK/beam in Q and U in a region of 20,000 square-degrees. The second instrument, or Thirty-GHz Instrument (TGI), is currently undergoing the commissioning phase, and the third instrument, or Forty-GHz Instrument (FGI), is in the final fabrication phase. Finally, we describe the first scientific results obtained with the MFI. Some specific regions, mainly along the Galactic plane, have been surveyed to a deeper depth, reaching sensitivities of around 40 μK/beam. We present new upper limits on the polarization of the anomalous dust emission, resulting from these data, in the Perseus molecular complex and in the W43 molecular complex.

  18. Tritium release experiment in France, presentation, organization and realization

    SciTech Connect

    Paillard, P.; Clerc, H.; Calando, J.P.; Gros, R.; Hircq, B.

    1988-09-01

    In October 1986 an experimental release of 256 TBq of tritium was performed in FRANCE; this experiment formed part of general studies agreed by the European Communities concerning the safety of future fusion reactors. The main objectives related to the analysis of HT HTO conversion in air and soil and the assessment of models. The organization and execution of the experiment was under the responsibility of the French Commissariat for Atomic Energy (CEA). The major experimental parameters such as site, weather conditions, activity are presented as well as the administrative aspects and appropriate logistics.

  19. Current status and perspectives of the LUCIFER experiment

    NASA Astrophysics Data System (ADS)

    Orio, F.

    2016-04-01

    The quest for Neutrinoless Double Beta Decay (0νDBD) represents one of the most promising ways to investigate the neutrino mass nature, Dirac or Majorana. A convincing detection claim demands for detectors with excellent energy resolution and almost zero background in the energy region of interest. These features can be obtained with the approach of the LUCIFER project, funded by an European grant, which is based on the double readout of the heat and scintillation light produced by ZnSe scintillating bolometers. The resulting identification and rejection of the α interactions, as well as the large Q-value of the emitter, will guarantee a background lower than 10-3 counts/keV/kg/y in the energy region of the 0νDBD of 82Se, an order of magnitude lower with respect to the present generation experiments. Despite the small mass of ˜17 kg, LUCIFER will reach a 90% CL sensitivity of 0.6 ×1026 y on the half-life of the decay. We describe the current status of the project, including results of the recent R&D activity.

  20. The Status and Recent Results of the Telescope Array Experiment

    NASA Astrophysics Data System (ADS)

    Yamazaki, Katsuya

    The Telescope Array (TA) is a cosmic ray observatory of the largest aperture in the northern hemisphere, located in a desert in the western part of Utah, U.S.A., to explore the origin of ultrahigh energy cosmic rays, photons, and neutrinos. The TA employs two types of detectors to observe air showers generated by cosmic rays in the atmosphere: the first is a "surface detector (SD)" of scintillation counters to measure shower particles on the ground, and the second is a "fluorescence detector (FD)" of telescopes installed in three stations to observe fluorescence light, caused by air shower particles, from the atmosphere above the SD array. The TA detectors have been in routine operation since May 2008. We measured the energy spectrum of cosmic rays with energy greater than 1018 eV from our first 4-year data. We found a clear suppression of comic ray intensity above 5 × 1019 eV. This feature is consistent with a theoretical prediction that cosmic rays lose energies due to interaction with cosmic microwave background photons during propagation in the intergalactic space. In this talk, We will present the status of the TA experiment and the recent results, including the energy spectrum, study of the primary mass composition, and searches for anisotropies in the arrival directions. We also briefly describe plans for further extensions.

  1. Present status of the NIJI-IV storage-ring free-electron lasers

    SciTech Connect

    Yamazaki, T.; Yamada, K.; Sei, N.

    1995-12-31

    The tunable region of the free-electron-laser (FEL) wavelength with the NIJI-IV system is now 348{approximately}595 nm. After the lasing at 352 nm in 1994, the quality of the electron beam stored in the ring has been improved further, and the highest peak intensity of the laser obtained so far is more than 300 times as high as that of the resonated spontaneous emission. The macro-temporal structure of the lasing has been greatly improved. Recently, a single-bunch injection system was completed, and the system has been installed in the injector linac, which is expected to increase the peak stored-beam current. The commissioning and the test of the new system is under way. The beam transporting system from the linac to the ring is also being modified by increasing the number of quadrupole magnets. The experiments related to the FEL in the ultraviolet wavelength region will be begun in this coming May. The results and the status of the FEL experiments will be presented at the Conference.

  2. Status of the dynamic helium charging experiment (DHCE)

    SciTech Connect

    Loomis, B.A.; Smith, D.L.; Hamilton, M.L.; Greenwood, L.R.; Clemmer, R.G.; Matsui, H.; Pearce, K.L.; Kopasz, J.P.; Johnson, C.E.

    1992-12-31

    The objective of this experiment is to provide baseline irradiation data on the effects of concurrent helium production and neutron irradiation on the physical and mechanical properties of vanadium alloys. Effects of helium production and irradiation on the alloy microstructures will also be characterized. This report summarizes the status of the DHCE in FFTF-MOTA, the preparations for retrieval of specimens from the irradiation capsules, and experimental results on procedures for the removal of tritium from the irradiated specimens.

  3. Recent status of A Positron-Electron Experiment (APEX)

    NASA Astrophysics Data System (ADS)

    Saitoh, H.; Pedersen, T. S.; Hergenhahn, U.; Stenson, E. V.; Paschkowski, N.; Hugenschmidt, C.

    2014-04-01

    A project is underway to generate an electron-positron plasma by using the NEPOMUC positron source at the FRM-II facility combined with a multicell-type Penning trap (PAX) and a superconducting dipole magnetic field trap (APEX). In the APEX project, proof-of principle experiments are proposed for the development of efficient injection methods of positrons by using a small dipole magnetic field trap with a permanent magnet. Plans for the APEX project and its recent status are reported.

  4. Presentations of self and the status dynamics of psychotherapy and supervision.

    PubMed

    Schwartz, Wynn

    2008-01-01

    This article explores basic issues in the status dynamics of psychotherapy and supervision. Self-presentation and status markers create a dynamic that affects the participants in psychotherapy and in its supervision. "Political correctness" at times, makes it difficult for trainees to discuss their feelings and observations about status differences with their supervisors. One of the roles of supervision is the rite of passage, involving moving the trainee from the world of nonpsychologist to membership in the community of psychologists. During supervision, the supervisor's self-disclosure of relevant autobiographical details and problematic thoughts and feeling is recommended as useful, even though such revelations in psychotherapy practice might be inappropriate or hazardous.

  5. Auditory status and experiences of abuse among college students.

    PubMed

    Porter, Judy L; Williams, Laverne McQuiller

    2011-01-01

    Studies that explore experiences of abuse among deaf or hard of hearing college students are sparse and usually focus on lifetime experiences rather than the college years. A random sample of more than 1,000 college students at a campus in Upstate New York provided the data for this study. An institute for the deaf or hard of hearing was one of the colleges at the university and provided a unique opportunity to explore experiences among this demographic. Victimization rates and experiences by auditory status--deaf and hard of hearing or hearing--were examined. Binomial regression analyses were employed and findings indicated a significant association with being deaf or hard of hearing and physical and psychological abuse at the hands of a partner. Implications for policy and future research are discussed.

  6. Present status and future trends of R&D for HTS rotational machines in Japan

    NASA Astrophysics Data System (ADS)

    Tsukamoto, Osami

    2014-09-01

    Various HTS rotating machines, from multiple MW class to several 10 kW class, are being developed in Japan. R&D statuses of those machines are reviewed. Design studies of various types of HTS wind power generators are also conducted in Japan and their merits and demerits are discussed. Based on the present R&D statuses, future technical trends of HTS machines are discussed.

  7. Status of non-LHC experiments at CERN

    NASA Astrophysics Data System (ADS)

    Schlatter, Dieter

    2005-06-01

    From the few non-LHC experiments still done at CERN, three experiments are presented. One experiment is completed (NA48 on direct CP violation in kaon decays), two others (NA48/1 on rare kaon decays and DIRAC on Pionium lifetime) have first physics results. The last chapter is a reminder of the SMC experiment in memory of Vernon Hughes (1921-2003), who was the spokesperson.

  8. Perceived Social Status and Learning Experiences in Social Cognitive Career Theory

    ERIC Educational Resources Information Center

    Thompson, Mindi N.; Dahling, Jason J.

    2012-01-01

    The purpose of this study was to test a model based on Social Cognitive Career Theory (Lent, Brown, & Hackett, 1994) that placed perceived social status as an antecedent of career-related learning experiences, self-efficacy, and outcome expectations. Gender was included in the present model and results indicated that gender related as expected to…

  9. Perceived Social Status and Learning Experiences in Social Cognitive Career Theory

    ERIC Educational Resources Information Center

    Thompson, Mindi N.; Dahling, Jason J.

    2012-01-01

    The purpose of this study was to test a model based on Social Cognitive Career Theory (Lent, Brown, & Hackett, 1994) that placed perceived social status as an antecedent of career-related learning experiences, self-efficacy, and outcome expectations. Gender was included in the present model and results indicated that gender related as expected to…

  10. Status of RAISE, the Rapid Acquisition Imaging Spectrograph Experiment

    NASA Astrophysics Data System (ADS)

    Laurent, Glenn T.; Hassler, D. M.; DeForest, C.; Ayres, T. R.; Davis, M.; De Pontieu, B.; Schuehle, U.; Warren, H.

    2013-07-01

    The Rapid Acquisition Imaging Spectrograph Experiment (RAISE) sounding rocket payload is a high speed scanning-slit imaging spectrograph designed to observe the dynamics and heating of the solar chromosphere and corona on time scales as short as 100 ms, with 1 arcsec spatial resolution and a velocity sensitivity of 1-2 km/s. The instrument is based on a new class of UV/EUV imaging spectrometers that use only two reflections to provide quasi-stigmatic performance simultaneously over multiple wavelengths and spatial fields. The design uses an off-axis parabolic telescope mirror to form a real image of the sun on the spectrometer entrance aperture. A slit then selects a portion of the solar image, passing its light onto a near-normal incidence toroidal grating, which re-images the spectrally dispersed radiation onto two array detectors. Two full spectral passbands over the same one-dimensional spatial field are recorded simultaneously with no scanning of the detectors or grating. The two different spectral bands (1st-order 1205-1243Å and 1526-1564Å) are imaged onto two intensified Active Pixel Sensor (APS) detectors whose focal planes are individually adjusted for optimized performance. The telescope and grating are coated with B4C to enhance short wavelength (2nd order) reflectance, enabling the instrument to record the brightest lines between 602-622Å and 761-780Å at the same time. RAISE reads out the full field of both detectors at 5-10 Hz, allowing us to record over 1,500 complete spectral observations in a single 5-minute rocket flight, opening up a new domain of high time resolution spectral imaging and spectroscopy. We present an overview of the project, a summary of the maiden flight results, and an update on instrument status.Abstract (2,250 Maximum Characters): The Rapid Acquisition Imaging Spectrograph Experiment (RAISE) sounding rocket payload is a high speed scanning-slit imaging spectrograph designed to observe the dynamics and heating of the solar

  11. RAISE (Rapid Acquisition Imaging Spectrograph Experiment): Results and Instrument Status

    NASA Astrophysics Data System (ADS)

    Laurent, Glenn T.; Hassler, Donald; DeForest, Craig; Ayres, Tom; Davis, Michael; DePontieu, Bart; Diller, Jed; Graham, Roy; Schule, Udo; Warren, Harry

    2015-04-01

    We present initial results from the successful November 2014 launch of the RAISE (Rapid Acquisition Imaging Spectrograph Experiment) sounding rocket program, including intensity maps, high-speed spectroheliograms and dopplergrams, as well as an update on instrument status. The RAISE sounding rocket payload is the fastest high-speed scanning-slit imaging spectrograph flown to date and is designed to observe the dynamics and heating of the solar chromosphere and corona on time scales as short as 100-200ms, with arcsecond spatial resolution and a velocity sensitivity of 1-2 km/s. The instrument is based on a class of UV/EUV imaging spectrometers that use only two reflections to provide quasi-stigmatic performance simultaneously over multiple wavelengths and spatial fields. The design uses an off-axis parabolic telescope mirror to form a real image of the sun on the spectrometer entrance aperture. A slit then selects a portion of the solar image, passing its light onto a near-normal incidence toroidal grating, which re-images the spectrally dispersed radiation onto two array detectors. Two full spectral passbands over the same one-dimensional spatial field are recorded simultaneously with no scanning of the detectors or grating. The two different spectral bands (1st-order 1205-1243Å and 1526-1564Å) are imaged onto two intensified Active Pixel Sensor (APS) detectors whose focal planes are individually adjusted for optimized performance. RAISE reads out the full field of both detectors at 5-10 Hz, allowing us to record over 1,500 complete spectral observations in a single 5-minute rocket flight, opening up a new domain of high time resolution spectral imaging and spectroscopy. RAISE is designed to study small-scale multithermal dynamics in active region (AR) loops, explore the strength, spectrum and location of high frequency waves in the solar atmosphere, and investigate the nature of transient brightenings in the chromospheric network.

  12. The current status of orbital experiments for UHECR studies

    NASA Astrophysics Data System (ADS)

    Panasyuk, M. I.; Casolino, M.; Garipov, G. K.; Ebisuzaki, T.; Gorodetzky, P.; Khrenov, B. A.; Klimov, P. A.; Morozenko, V. S.; Sakaki, N.; Saprykin, O. A.; Sharakin, S. A.; Takizawa, Y.; Tkachev, L. G.; Yashin, I. V.; Zotov, M. Yu

    2015-08-01

    Two types of orbital detectors of extreme energy cosmic rays are being developed nowadays: (i) TUS and KLYPVE with reflecting optical systems (mirrors) and (ii) JEM-EUSO with high- transmittance Fresnel lenses. They will cover much larger areas than existing ground-based arrays and almost uniformly monitor the celestial sphere. The TUS detector is the pioneering mission developed in SINP MSU in cooperation with several Russian and foreign institutions. It has relatively small field of view (±4.5°), which corresponds to a ground area of 6.4 • 103 km2. The telescope consists of a Fresnel-type mirror-concentrator (∼ 2 m2) and a photo receiver (a matrix of 16 x 16 photomultiplier tubes). It is to be deployed on the Lomonosov satellite, and is currently at the final stage of preflight tests. Recently, SINP MSU began the KLYPVE project to be installed on board of the Russian segment of the ISS. The optical system of this detector contains a larger primary mirror (10 m2), which allows decreasing the energy threshold. The total effective field of view will be at least ±14° to exceed the annual exposure of the existing ground-based experiments. Several configurations of the detector are being currently considered. Finally, JEM-EUSO is a wide field of view (±30°) detector. The optics is composed of two curved double-sided Fresnel lenses with 2.65 m external diameter, a precision diffractive middle lens and a pupil. The ultraviolet photons are focused onto the focal surface, which consists of nearly 5000 multi-anode photomultipliers. It is developed by a large international collaboration. All three orbital detectors have multi-purpose character due to continuous monitoring of various atmospheric phenomena. The present status of development of the TUS and KLYPVE missions is reported, and a brief comparison of the projects with JEM-EUSO is given.

  13. Operation and Development Status of the Spacecraft Fire Experiments (Saffire)

    NASA Technical Reports Server (NTRS)

    Ruff, Gary A.; Urban, David L.

    2016-01-01

    Since 2012, a series of Spacecraft Fire Experiments (Saffire) have been under development by the Spacecraft Fire Safety Demonstration (SFS Demo) project, funded by NASA's Advanced Exploration Systems Division. The overall objective of this project is to reduce the uncertainty and risk associated with the design of spacecraft fire safety systems for NASA's exploration missions. The approach to achieving this goal has been to define, develop, and conduct experiments that address gaps in spacecraft fire safety knowledge and capabilities identified by NASA's Fire Safety System Maturation Team. The Spacecraft Fire Experiments (Saffire-I, -II, and -III) are material flammability tests at length scales that are realistic for a spacecraft fire in low-gravity. The specific objectives of these three experiments are to (1) determine how rapidly a large scale fire grows in low-gravity and (2) investigate the low-g flammability limits compared to those obtained in NASA's normal gravity material flammability screening test. The experiments will be conducted in Orbital ATK's Cygnus vehicle after it has unberthed from the International Space Station. The tests will be fully automated with the data downlinked at the conclusion of the test before the Cygnus vehicle reenters the atmosphere. This paper discusses the status of the Saffire-I, II, and III experiments followed by a review of the fire safety technology gaps that are driving the development of objectives for the next series of experiments, Saffire-IV, V, and VI.

  14. Current status of the EUV/soft x-ray FEL beamline at SACLA (Conference Presentation)

    NASA Astrophysics Data System (ADS)

    Owada, Shigeki; Nakajima, Kyo; Togashi, Tadashi; Tono, Kensuke; Joti, Yasumasa; Inagaki, Takahiro; Hara, Toru; Tanaka, Takashi; Togawa, Kazuaki; Yamaga, Mitsuhiro; Sugimoto, Takashi; Senba, Yasunori; Yumoto, Hirokatsu; Koyama, Takahisa; Ohashi, Haruhiko; Tanaka, Hitoshi; Yabashi, Makina

    2016-09-01

    SACLA was inaugurated in March 2012 with two beamlines: BL3 for hard X-ray FEL and BL1 for wide range spontaneous emission. Currently, all user experiments have been performed at BL3 and BL2 that was constructed as the second hard XFEL beamline. To enhance research opportunities with softer X-ray FEL, we decided to relocate the SCSS test accelerator, which was a prototype of SACLA and decommissioned in 2013, to the SACLA undulator hall, to connect to BL1, and to generate EUV and soft X-ray FEL independently of the SACLA linac. In addition, we started commissioning of the upgraded BL1 in September 2015, and successfully observe SASE lasing at a photon energy of 36 eV in October. We are now constructing the end station, and will start commissioning in June 2016. We will install two C-band accelerator units that increase an electron beam energy up to 750 MeV with a photon energy up to 100 eV in the summer of 2016. In this presentation, I will report the latest status of the beamline.

  15. Perceptions of legal status: Associations with psychosocial experiences among undocumented Latino/a immigrants.

    PubMed

    Cobb, Cory L; Meca, Alan; Xie, Dong; Schwartz, Seth J; Moise, Rhoda K

    2017-03-01

    In the present study we used a mixed-method design to examine perceptions of legal status and their association with psychosocial experiences among undocumented Latino/a immigrants in the United States Participants were asked to compare their perceived social experiences with those of documented Latinos/as in order to determine whether differences in such perceptions might emerge and whether such perceptions might differentially impact well-being. A community sample of 140 self-reported undocumented Latino/a immigrants completed questionnaires measuring perceptions of legal status, well-being (global and psychological), perceived context of reception, and experiences of discrimination. Results indicated that individuals who perceived their experiences as different from those of documented Latinos/as due to an unauthorized legal status reported less social equality as evidenced by lower well-being, increased experiences of discrimination, and a more adverse context of reception. Moreover, individuals who perceived their social experiences as different from those of documented Latinos/as due to their legal status reported issues centering on 2 domains: limited opportunity/restricted social mobility and discrimination/unfair treatment. Theoretical and practical implications are discussed in terms of advancing theory and from a multicultural counseling perspective. (PsycINFO Database Record (c) 2017 APA, all rights reserved).

  16. Ranking of simultaneously presented choice options in animal preference experiments.

    PubMed

    Halekoh, Ulrich; Jørgensen, Erik; Bak Jensen, Margit; Pedersen, Lene Juul; Studnitz, Merete; Højsgaard, Søren

    2007-08-01

    We considered experiments where animals chose one of all possible simultaneously presented options. The animals might be observed at repeated occasions. In the ethological literature the analysis is often focused on testing the global hypothesis of no difference in preferences by non-parametric methods. This fails to address the estimation of a ranking. Often this approach cannot adequately reflect the experimental setting and the repeated measurement structure. Therefore, we propose to model the choice probabilities for the options with a multinomial logistic model. The correlation induced by repeated measurements is incorporated by animal specific random intercepts. The ranking of the options is taken as the order of the choice probabilities. Adopting a Bayesian approach samples from the posterior distribution of the choice probabilities provide directly samples from the posterior of the rankings. Based on this an estimate of the ranking and description of its variability can be derived. The computation was performed via Markov chain Monte Carlo sampling and was implemented using WinBUGS. We illustrate our approach with an experiment to determine the preference of pigs for three different rooting materials. The proposed method allowed deriving an overall ranking for different combinations of the materials and the spatial positioning.

  17. Status and Prospects of the DMTPC Directional Dark Matter Experiment

    NASA Astrophysics Data System (ADS)

    Monroe, J.

    2012-02-01

    The DMTPC directional dark matter detection experiment is a low-pressure CF4 gas time projection chamber, instrumented with charge and scintillation photon readout. This detector design strategy emphasizes reconstruction of WIMP-induced nuclear recoil tracks, in order to determine the direction of incident dark matter particles. Directional detection has the potential to make the definitive observation of dark matter using the unique angular signature of the dark matter wind, which is distinct from all known backgrounds. This talk will briefly review the experimental technique and current status of DMTPC.

  18. Status of the AFP project in the ATLAS experiment

    NASA Astrophysics Data System (ADS)

    Taševský, Marek

    2015-04-01

    Status of the AFP project in the ATLAS experiment is summarized. The AFP system is composed of a tracker to detect intact, diffractively scattered protons, and of a time-of-flight detector serving to suppress background from pile-up interactions. The whole system, located around 210 m from the main ATLAS detector, is placed in Roman Pots which move detectors from and to the incident proton beams. A typical distance of the closest approach of the tracker to these beams is 2-3 mm. The main physics motivation lies in measuring diffractive processes in runs with not a very high amount of pile-up.

  19. Status and Prospects of CJPL and the CDEX Experiment

    NASA Astrophysics Data System (ADS)

    Lin, S. T.; Yue, Q.

    The China Dark Matter Experiment (CDEX) pursues the direct detection of light WIMPs towards the goal of a ton-scale germanium detector array at the China Jinping Underground Laboratory (CJPL) located in Sichuan, China. This facility having about 2400 m of rock overburden is the deepest operational underground laboratory in the world. Results on light WIMPs from the CDEX-0 and CDEX-1 employed a germanium detector array with a total mass of 20 g and a crystal mass of 994 g pPCGe detector respectively were reported. We highlight the status and perspectives of the dark matter programs at CJPL, in particular the project of CDEX-10.

  20. Status of Theory and Experiment in Hadronic Parity Violation

    NASA Astrophysics Data System (ADS)

    Snow, W. M.; Ahmed, M. W.; Bowman, J. D.; Crawford, C.; Fomin, N.; Gao, H.; Gericke, M. T.; Gudkov, V.; Holstein, B. R.; Howell, C. R.; Huffman, P.; van Oers, W. T. H.; Penttilä, S.; Wu, Y. K.

    2016-02-01

    Hadronic parity violation uses quark-quark weak interactions to probe nonperturbative strong interaction dynamics through two nonperturbative QCD scales: ΛQCD and the fine-tuned MeV scales of NN bound states in low energy nuclear physics. The current and projected availability of high-intensity neutron and photon sources coupled with ongoing experiments and continuing developments in theoretical methods provide the opportunity to greatly expand our understanding of hadronic parity violation in few-nucleon systems. The current status of these efforts and future plans are discussed.

  1. Status of the AFP project in the ATLAS experiment

    SciTech Connect

    Taševský, Marek

    2015-04-10

    Status of the AFP project in the ATLAS experiment is summarized. The AFP system is composed of a tracker to detect intact, diffractively scattered protons, and of a time-of-flight detector serving to suppress background from pile-up interactions. The whole system, located around 210 m from the main ATLAS detector, is placed in Roman Pots which move detectors from and to the incident proton beams. A typical distance of the closest approach of the tracker to these beams is 2–3 mm. The main physics motivation lies in measuring diffractive processes in runs with not a very high amount of pile-up.

  2. Nonconvulsive Status Epilepticus on Electroencephalography: An Atypical Presentation of Subacute Sclerosing Panencephalitis in Two Children

    PubMed Central

    Singhi, Pratibha; Saini, Arushi Gahlot; Sahu, Jitendra Kumar

    2012-01-01

    Subacute sclerosing panencephalitis is a neurodegenerative disease secondary to measles infection that usually has a typical presentation with progressive myoclonia, cognitive decline, and periodic slow-wave complexes on electroencephalography. We report two pediatric cases who presented with periodic myoclonic jerks and cognitive decline. In both cases, the electroencephalogram showed continuous nonconvulsive status epilepticus activity. Both had elevated measles antibodies in cerebrospinal fluid and blood. Pediatricians need to be aware of this atypical presentation of subacute sclerosing panencephalitis. PMID:23094174

  3. Status of SRNL radiological field lysimeter experiment-Year 1

    SciTech Connect

    Kaplan, D.; Roberts, K.; Bagwell, L.

    2013-10-01

    The Savannah River National Laboratory (SRNL) Radiological Field Lysimeter Experiment is a one-of-a-kind field facility designed to study radionuclide geochemical processes at a larger spatial scale (from grams to tens of kilograms sediment) and temporal scale (from months to 10 years) than is readily afforded through laboratory studies. The lysimeter facility is intended to capture the natural heterogeneity of moisture and temperature regimes in the vadose zone, the unsaturated subsurface region between the surface soil and the underlying aquifer. The 48 lysimeter columns, which contain various radionuclides (and stable iodine), were opened to rainfall infiltration on July 5, 2012. The objective of this report is to provide a status of the lysimeter facility operations and to compile data collected during FY13, including leachate volume, rainfall, and soil moisture and temperature in situ probe data. Radiological leachate data are not presented in this document but will be the subject of a separate document.1 Leachate samples were collected quarterly and shipped to Clemson University for radiological analyses. Rainfall, leachate volume, moisture and temperature probe data were collected continuously. During operations of the facility this year, there were four safety or technical concerns that required additional maintenance: 1) radioactivity was detected in one of the overflow bottles (captured water collected from the secondary containment that does not come in contact with the radiological source material); 2) rainwater accumulated within the sample-bottle storage sheds; 3) overflow containers collected more liquid than anticipated; and 4) significant spider infestation occurred in the sample-bottle storage sheds. To address the first three concerns, each of the lysimeter columns was re-plumbed to improve and to minimize the number of joint unions. To address the fourth concern regarding spiders, new sample-bottle water sheds were purchased and a pest control

  4. STATUS OF THE INTERNATIONAL MUON IONIZATION COOLING EXPERIMENT(MICE)

    SciTech Connect

    Zisman, Michael S.

    2007-07-18

    An international experiment to demonstrate muon ionization cooling is scheduled for beam at Rutherford Appleton Laboratory (RAL) in 2007. The experiment comprises one cell of the Study II cooling channel [1], along with upstream and downstream detectors to identify individual muons and measure their initial and final 6D phase-space parameters to a precision of 0.1%. Magnetic design of the beam line and cooling channel are complete and portions are under construction. The experiment will be described, including cooling channel hardware designs, fabrication status, and running plans. Phase 1 of the experiment will prepare the beam line and provide detector systems, including time-of-flight, Cherenkov, scintillating-fiber trackers and their spectrometer solenoids, and an electromagnetic calorimeter. The Phase 2 system will add the cooling channel components, including liquid-hydrogen absorbers embedded in superconducting Focus Coil solenoids, 201-MHz normal-conducting RF cavities, and their surrounding Coupling Coil solenoids. The MICE Collaboration goal is to complete the experiment by 2010; progress toward this is discussed.

  5. Status of Magnetic Nozzle and Plasma Detachment Experiment

    SciTech Connect

    Chavers, D. Gregory; Dobson, Chris; Jones, Jonathan; Lee, Michael; Martin, Adam; Gregory, Judith; Cecil, Jim; Bengtson, Roger D.; Breizman, Boris; Arefiev, Alexey; Chang-Diaz, Franklin; Squire, Jared; Glover, Tim; McCaskill, Greg; Cassibry, Jason; Li Zhongmin

    2006-01-20

    High power plasma propulsion can move large payloads for orbit transfer, lunar missions, and beyond with large savings in fuel consumption owing to the high specific impulse. At high power, lifetime of the thruster becomes an issue. Electrodeless devices with magnetically guided plasma offer the advantage of long life since magnetic fields confine the plasma radially and keep it from impacting the material surfaces. For decades, concerns have been raised about the plasma remaining attached to the magnetic field and returning to the vehicle along the closed magnetic field lines. Recent analysis suggests that this may not be an issue if the magnetic field is properly shaped in the nozzle region and the plasma has sufficient energy density to stretch the magnetic field downstream. An experiment is being performed to test the theory regarding the MHD detachment scenario. The status of that experiment will be discussed in this paper.

  6. United States National Hydrogen Fuel Cell Vehicle and Infrastructure Learning Demonstration - Status and Results (Presentation)

    SciTech Connect

    Wipke,K.; Sprik, S.; Kurtz, J.; Ramsden, T.; Garbak, J.

    2009-03-06

    This presentation provides status and results for the United States National Hydrogen Fuel Cell Vehicle Learning Demonstration, including project objectives, partners, the National Renewable Energy Laboratory's role in the project and methodology, how to access complete results, and results of vehicle and infrastructure analysis.

  7. The Martian Radiation Environment Experiment -- Results and Status

    NASA Astrophysics Data System (ADS)

    Zeitlin, C.; Cleghorn, T. F.; Cucinotta, F. A.; Saganti, P.; Andersen, V.; Lee, K. T.; Pinsky, L. S.; Atwell, W.; Turner, R.

    2004-05-01

    Ionizing radiation in space presents a potentially serious health hazard to astronauts on long-duration missions. Missions that take humans outside the geomagnetosphere (which provides significant shielding for crews in low-Earth orbit) are of particular concern. A mission to Mars would expose a crew to a substantial radiation dose from high-energy heavy ions in the Galactic Cosmic Radiation (GCR). Though not expected to cause acute effects, such exposures might endanger the long-term health of crewmembers, leading to increased risk of late effects such as cancer and cataract. Since the biological effects of these ions are not well understood, NASA cannot yet specify career limits for deep-space missions. While ground-based research in radiobiology continues, it is necessary to characterize the radiation field on the Martian surface. This is determined by the radiation incident on the top of the Martian atmosphere, the transmission properties of the atmosphere, and the production of secondary particles (neutrons in particular) in the upper part of the surface. The Martian Radiation Environment Experiment (MARIE), aboard the 2001 Mars Odyssey spacecraft, has returned the first detailed measurements of the radiation field incident on the atmosphere. MARIE consists of a stack of silicon charged-particle detectors, designed to measure the nearly-constant flux of energetic Galactic Cosmic Rays (GCR) and intermittent Solar Particle Events (SPE). The detector is optimized for the detection of solar protons and helium in the energy range from 30 to 75 MeV/nucleon, though higher energies and heavier ions are also detected. Despite considerable uncertainties in data normalization, the measured dose agrees with model calculations, to an accuracy well within the (conservatively) estimated errors. As of this writing (Feb. 2004), MARIE is off, having sustained damage during the large Solar Particle Event of Oct. 29, 2003. Attempts to recover the instrument will resume in the

  8. Overview and Status of the SeaQuest Experiment

    NASA Astrophysics Data System (ADS)

    Isenhower, Larry Donald; SeaQuest Collaboration

    2016-09-01

    SeaQuest (E906) is a Fermilab fixed target experiment and has been running since December 2013. It has made significant progress towards its goal of extending measurements made by earlier Fermilab Drell-Yan (D-Y) experiments, E866 and E772. A description will be given of the effort that went into building this new high-mass, high-rate capability di-muon spectrometer with entirely new target, trigger, and DAQ systems. These were integrated into detector systems which are new or recycled from other experiments. A completely new beam operation mode had to be developed by Fermilab that would allow a slow extraction of the beam for SeaQuest over four seconds while not disturbing the fast extraction mode for neutrino running. A beam Cherenkov detector was built that could run at the necessary 53 MHz rate to monitor each beam pulse and produce a beam veto for large proton bunches. After commissioning, SeaQuest has made steady progress on the amount of data recorded. The current status will be shown, along with expectations for the next year. Many challenges have been overcome by this collaboration in order to produce data for analysis. A broad range of physics results will be the result of this effort as well as a number of possible future experiments. Work supported by U.S. DOE MENP Grant DE-FG02-03ER41243.

  9. Current status of GW experiment and multi-messenger astronomy

    NASA Astrophysics Data System (ADS)

    Rudenko, V. N.

    2016-06-01

    A limited review of the status of advanced gravitational wave interferometers is presented. In addition, a new opto-acoustical gravitational detector OGRAN in the deep underground of BNO INR RAS is described. The second part of the paper contains a short description of the "multi-messenger astronomy" approach in the context of the GW detection. Various scenarios of such strategy proposed by different authors are discussed. Special attention is paid to the "neutrino-gravity correlation" which looks more or less realistic in respect of supernova events in the Milky Way and near-by galaxies.

  10. Current Status of the WArP Experiment

    SciTech Connect

    Szelc, A. M.

    2009-04-17

    The WArP Collaboration is getting ready to run the WArP 100 liter detector in the Underground laboratory in Gran Sasso, Italy. The new detector, scheduled to run in 2008, should improve the current sensitivity limits by a factor of 10. Meanwhile, an active R and D program is being conducted. The highlights of this program, namely the runs with Argon depleted in the radioactive isotope {sup 39}Ar currently in preparation and the measurements of the effects of contamination with Nitrogen and Oxygen on the Liquid Argon effective light yield will be presented as well as the current status of the 100 liter detector.

  11. Status of the International Muon Ionization Cooling Experiment (MICE)

    SciTech Connect

    Zisman, Michael S.; Zisman, Michael S.

    2007-02-02

    An international experiment to demonstrate muonionization cooling is scheduled for beam at RutherfordAppleton Laboratory (RAL) in 2007. The experimentcomprises one cell of the Study II cooling channel [1],along with upstream and downstream detectors to identifyindividual muons and measure their initial and final 6Dphase-space parameters to a precision of 0.1percent. Magneticdesign of the beam line and cooling channel are completeand portions are under construction. The experiment willbe described, including cooling channel hardware designs,fabrication status, and running plans. Phase 1 of theexperiment will prepare the beam line and providedetector systems, including time-of-flight, Cherenkov,scintillating-fiber trackers and their spectrometersolenoids, and an electromagnetic calorimeter. The Phase2 system will add the cooling channel components,including liquid-hydrogen absorbers embedded insuperconducting Focus Coil solenoids, 201-MHz normalconductingRF cavities, and their surrounding CouplingCoil solenoids. The MICE Collaboration goal is tocomplete the experiment by 2010; progress toward this isdiscussed.

  12. Clinical presentation and visual status of retinitis pigmentosa patients: a multicenter study in southwestern Nigeria

    PubMed Central

    Onakpoya, Oluwatoyin Helen; Adeoti, Caroline Olufunlayo; Oluleye, Tunji Sunday; Ajayi, Iyiade Adeseye; Majengbasan, Timothy; Olorundare, Olayemi Kolawole

    2016-01-01

    Background To review the visual status and clinical presentation of patients with retinitis pigmentosa (RP). Methodology Multicenter, retrospective, and analytical review was conducted of the visual status and clinical characteristics of patients with RP at first presentation from January 2007 to December 2011. Main outcome measure was the World Health Organization’s visual status classification in relation to sex and age at presentation. Data analysis by SPSS (version 15) and statistical significance was assumed at P<0.05. Results One hundred and ninety-two eyes of 96 patients with mean age of 39.08±18.5 years and mode of 25 years constituted the study population; 55 (57.3%) were males and 41 (42.7%) females. Loss of vision 67 (69.8%) and night blindness 56 (58.3%) were the leading symptoms. Twenty-one (21.9%) patients had a positive family history, with RP present in their siblings 15 (71.4%), grandparents 11 (52.3%), and parents 4 (19.4%). Forty (41.7%) were blind at presentation and 23 (24%) were visually impaired. Blindness in six (15%) patients was secondary to glaucoma. Retinal vascular narrowing and retinal pigmentary changes of varying severity were present in all patients. Thirty-five (36.5%) had maculopathy, 36 (37.5%) refractive error, 19 (20%) lenticular opacities, and eleven (11.5%) had glaucoma. RP was typical in 85 patients (88.5%). Older patients had higher rates of blindness at presentation (P=0.005); blindness and visual impairment rate at presentation were higher in males than females (P=0.029). Conclusion Clinical presentation with advanced diseases, higher blindness rate in older patients, sex-related difference in blindness/visual impairment rates, as well as high glaucoma blindness in RP patients requires urgent attention in southwestern Nigeria. PMID:27601870

  13. Clinical presentation and visual status of retinitis pigmentosa patients: a multicenter study in southwestern Nigeria.

    PubMed

    Onakpoya, Oluwatoyin Helen; Adeoti, Caroline Olufunlayo; Oluleye, Tunji Sunday; Ajayi, Iyiade Adeseye; Majengbasan, Timothy; Olorundare, Olayemi Kolawole

    2016-01-01

    To review the visual status and clinical presentation of patients with retinitis pigmentosa (RP). Multicenter, retrospective, and analytical review was conducted of the visual status and clinical characteristics of patients with RP at first presentation from January 2007 to December 2011. Main outcome measure was the World Health Organization's visual status classification in relation to sex and age at presentation. Data analysis by SPSS (version 15) and statistical significance was assumed at P<0.05. One hundred and ninety-two eyes of 96 patients with mean age of 39.08±18.5 years and mode of 25 years constituted the study population; 55 (57.3%) were males and 41 (42.7%) females. Loss of vision 67 (69.8%) and night blindness 56 (58.3%) were the leading symptoms. Twenty-one (21.9%) patients had a positive family history, with RP present in their siblings 15 (71.4%), grandparents 11 (52.3%), and parents 4 (19.4%). Forty (41.7%) were blind at presentation and 23 (24%) were visually impaired. Blindness in six (15%) patients was secondary to glaucoma. Retinal vascular narrowing and retinal pigmentary changes of varying severity were present in all patients. Thirty-five (36.5%) had maculopathy, 36 (37.5%) refractive error, 19 (20%) lenticular opacities, and eleven (11.5%) had glaucoma. RP was typical in 85 patients (88.5%). Older patients had higher rates of blindness at presentation (P=0.005); blindness and visual impairment rate at presentation were higher in males than females (P=0.029). Clinical presentation with advanced diseases, higher blindness rate in older patients, sex-related difference in blindness/visual impairment rates, as well as high glaucoma blindness in RP patients requires urgent attention in southwestern Nigeria.

  14. HIV Status Disclosure Among Postpartum Women in Zambia with Varied Intimate Partner Violence Experiences.

    PubMed

    Hampanda, Karen M; Rael, Christine Tagliaferri

    2017-10-03

    HIV-positive pregnant and postpartum women's status disclosure to male sexual partners is associated with improved HIV and maternal and child health outcomes. Yet, status disclosure remains a challenge for many women living with HIV in sub-Saharan Africa, particularly those who are fearful of violence. The objective of the present study is to advance the current understanding of the relationship between intimate partner violence against women and their HIV status disclosure behaviors. We specifically evaluate how the severity, frequency, and type of violence against postpartum HIV-positive women affect status disclosure within married/cohabiting couples. A cross-sectional survey was administered by trained local research assistants to 320 HIV-positive postpartum women attending a large public health center for pediatric immunizations in Lusaka, Zambia. Survey data captured women's self-reports of various forms of intimate partner violence and whether they disclosed their HIV status to the current male partner. Multiple logistic regression models determined the odds of status disclosure by the severity, frequency, and type of violence women experienced. Our findings indicate a negative dose-response relationship between the severity and frequency of intimate partner violence and status disclosure to male partners. Physical violence has a more pronounced affect on status disclosure than sexual or emotional violence. Safe options for women living with HIV who experience intimate partner violence, particularly severe and frequent physical violence, are urgently needed. This includes HIV counselors' ability to evaluate the pros and cons of status disclosure among women and support some women's decisions not to disclose.

  15. Advanced Test Reactor Testing Experience: Past, Present and Future

    SciTech Connect

    Frances M. Marshall

    2005-04-01

    The Advanced Test Reactor (ATR), at the Idaho National Laboratory (INL), is one of the world’s premier test reactors for providing the capability for studying the effects of intense neutron and gamma radiation on reactor materials and fuels. The physical configuration of the ATR, a 4-leaf clover shape, allows the reactor to be operated at different power levels in the corner “lobes” to allow for different testing conditions for multiple simultaneous experiments. The combination of high flux (maximum thermal neutron fluxes of 1E15 neutrons per square centimeter per second and maximum fast [E>1.0 MeV] neutron fluxes of 5E14 neutrons per square centimeter per second) and large test volumes (up to 48" long and 5.0" diameter) provide unique testing opportunities. The current experiments in the ATR are for a variety of test sponsors -- US government, foreign governments, private researchers, and commercial companies needing neutron irradiation services. There are three basic types of test configurations in the ATR. The simplest configuration is the sealed static capsule, wherein the target material is placed in a capsule, or plate form, and the capsule is in direct contact with the primary coolant. The next level of complexity of an experiment is an instrumented lead experiment, which allows for active monitoring and control of experiment conditions during the irradiation. The highest level of complexity of experiment is the pressurized water loop experiment, in which the test sample can be subjected to the exact environment of a pressurized water reactor. For future research, some ATR modifications and enhancements are currently planned. This paper provides more details on some of the ATR capabilities, key design features, experiments, and future plans.

  16. The library system of the DFVLR: Present status, planned reorganization, user possibilities

    NASA Technical Reports Server (NTRS)

    Sternemann, P.

    1985-01-01

    This paper gives an overview of the present status, planned alterations, and the scope of users of the DFVLR library, as well as a survey of library related activities outside of the library department. Attention is given to the tasks of the DFVLR which include research, assistance in planning and carrying out projects, and the construction and operation of large test installations, showing how they relate to demands on the library.

  17. Status of Proof-of-principle Experiment for Coherent Electron Cooling

    SciTech Connect

    Pinayev, I; Ben-Zvi, I; Bengtsson, J; Elizarov, A; Fedotov, A V; Gassner, D M; Hao, Y; Kayran, D; Litvinenko, V; Mahler, G J; Meng, W; Roser, T; Sheehy, B; Than, R; Tuozzolo, J E; Wang, G; Webb, S D; Yakimenko, V; Bell, G I; Bruhwiler, D L; Ranjbar, V H; Schwartz, B T; Hutton, A; Krafft, G A; Poelker, M; Rimmer, R A; Kholopov, M A; Vobly, P

    2012-07-01

    Coherent electron cooling (CEC) has a potential to significantly boost luminosity of high-energy, high-intensity hadron colliders. To verify the concept we conduct proof-of-the-principle experiment at RHIC. In this paper, we describe the current experimental setup to be installed into 2 o'clock RHIC interaction regions. We present current design, status of equipment acquisition and estimates for the expected beam parameters.

  18. Students' Presentations: Does the Experience Change Their Views?

    ERIC Educational Resources Information Center

    Sander, Paul; Sanders, Lalage

    2005-01-01

    Introduction: Research has shown that students do not like student presentations, yet a case can be made for them. This study seeks to understand the effects that presentations have on students. Method: Within an action research framework, two repeated-measures studies were completed, one with students undertaking assessed presentations the other…

  19. Status of the nEDM Experiment at PSI

    NASA Astrophysics Data System (ADS)

    Musgrave, Matthew

    2016-09-01

    The search for the neutron electric dipole moment (nEDM) is one of the most sensitive probes for new sources of T and CP violation, which could provide insight into important unanswered questions in the Standard Model including the baryon asymmetry of the universe and the strong CP problem. The current limit of the nEDM is dn < 3.0E-26 ecm (90% CL). At the Paul Scherrer Institut (PSI) in Switzerland an international collaboration of 14 institutions intends to either discover an nEDM or improve this limit using a new solid deuterium ultracold neutron (UCN) source and an upgraded version of the RAL/Sussex/ILL apparatus. The experiment is currently in operation and has implemented a data blinding algorithm for future analysis. Additional milestones include a new technique to determine the UCN energy spectra using spin-echo, measurement of the ratio of the neutron and 199Hg gyromagnetic ratios to within 0.8 ppm, and improved limits on the axion phase-space by searching for an oscillating nEDM. The current status of the experiment and future plans will be discussed.

  20. Extreme Light Infrastructure Nuclear Physics (ELI-NP): Present status and perspectives

    NASA Astrophysics Data System (ADS)

    Zamfir, N. V.

    2016-05-01

    Extreme Light Infrastructure - Nuclear Physics (ELI-NP), a new Research Center under construction, will use extreme electromagnetic fields for nuclear physics research and will be operational in 2018. The status of the Project implementation will be presented. At ELI-NP, a high power laser system together with a very brilliant gamma beam are the two main research tools. Their targeted operational parameters will be described. The related experimental set-ups will be presented, together with the main directions of the research envisioned.

  1. New Onset Refractory Status Epilepticus as an Unusual Presentation of a Suspected Organophosphate Poisoning

    PubMed Central

    Waheed, Shahan; Sabeen, Amber; Ullah Khan, Nadeem

    2014-01-01

    New onset refractory status epilepticus (NORSE) is a new entity in medical literature. It has different infectious and noninfectious etiologies showing a devastating impact onto the clinical outcome of patients. Therapy with anaesthetic and antiepileptic agents often fails to improve the condition, unless the primary cause is rectified. Here is presented the case of a young female with a history of depression who after a recent bereavement came to the Emergency Department of Aga Khan University Hospital with complaints of drowsiness that lasted for few hours. Though she had no history of organophosphate poisoning, her physical examination and further investigations were suggestive of the diagnosis. During her hospital stay, she developed refractory status epilepticus. Her seizures did not respond to standard antiepileptic and intravenous anesthetic agents and subsided only after intravenous infusion of atropine for a few days. Organophosphate poisoning is a very common presentation in the developing world and the associated status epilepticus poses a devastating problem for emergency physicians. In patients with suspected organophosphate poisoning with favoring clinical exam findings, the continuation of atropine intravenous infusion can be a safe option to abate seizures. PMID:25580311

  2. Virtual Teams and Synchronous Presentations: An Online Class Experience

    ERIC Educational Resources Information Center

    Adkins, Joni K.

    2013-01-01

    Global expansion, cost containment, and technology advances have all played a role in the increase of virtual teams in today's workplace. Virtual teams in an online graduate information technology management class prepared and presented synchronous presentations over a business or non-profit sector case. This paper includes a brief literature…

  3. Photonic crystal Fano lasers: experiment and theory (Conference Presentation)

    NASA Astrophysics Data System (ADS)

    Mork, Jesper; Yu, Yi; Xue, Weiqi; Semenova, Elizaveta; Yvind, Kresten

    2016-09-01

    We present theoretical and experimental results for a novel laser structure where one of the mirrors is realized by a Fano resonance between the laser waveguide and a side-coupled nano cavity. The laser may be modulated via the mirror resonance, enabling ultrahigh modulatioon speeds and pulse generation. Experimental results for a photonic crystal structure with quantum dot active layers will be presented.

  4. Development Unit Configuration Status of the MIP/MAAC Experiment

    NASA Technical Reports Server (NTRS)

    Karlmann, P. B.; Johnson, K. R.; Rapp, D.; Wu, J. J.

    1999-01-01

    The Mars In-Situ Propellant Production (ISPP) Precursor (MIP) experiment package is planned for inclusion on the Mars 2001 Lander. This experiment package consists of five experiments whose purpose is to demonstrate the performance of various ISPP processes in-situ on Mars. The demonstrated ability to produce propellant for Mars Return Vehicles (MRV) is considered to be a necessary precursor to any future manned mission to Mars. The Mars Atmosphere Acquisition and Compression (MAAC) experiment is part of the MIP package and is intended to demonstrate that, by using a sorption compressor, CO2 can be preferentially adsorbed at about 6 torr from the Mars atmosphere during the night when the bed is cold then subsequently compressed to about 800 torr by heating the bed and desorbing C02 during the day. The compressed CO2 produced by MAAC is to be fed to the Oxygen Generator Subsystem (OGS) where pure oxygen is to be produced. Pure oxygen is considered to be one of the primary constituents of a future manned MRV propellant system. A MAAC Development Unit (DU) has been fabricated and tested at JPL. The MAAC DU consists of: (1) a sorption bed filled with a CO2 selective sorbent material; (2) a purge system to be used to periodically backflush non-CO2 gases from the sorbent bed during adsorption; (3) a JPL-developed gas-gap heat switch that allows heat transfer to a radiator for heat removal from the bed during the night time adsorption period and that impedes heat transfer during the day time desorption period; (4) a radiator to radiate heat to the night sky during the adsorption period; (5) a set of three isolation valves and connecting tubing; (6) two pressure transducers and several thermocouples for monitoring the MAAC operating conditions, and command and data handling electronics. This paper will describe the operational theory and the configuration of the MAAC DU and will discuss the current status of the MAAC experiment development including some selected results

  5. Experiences with Two Reliability Data Collection Efforts (Presentation)

    SciTech Connect

    Sheng, S.; Lantz, E.

    2013-08-01

    This presentation, given by NREL at the Wind Reliability Experts Meeting in Albuquerque, New Mexico, outlines the causes of wind plant operational expenditures and gearbox failures and describes NREL's efforts to create a gearbox failure database.

  6. Hydrocarbon solubility and its migration processes: a look at the present status

    SciTech Connect

    Mamun, C.K.; Ohkuma, H.; Sepehrnoori, K.

    1985-12-01

    In this study we review the present status of knowledge of solubility of hydrocarbons and its implications on primary migration processes. The intent is to examine the solubility and the transportation mechanisms relevant to geopressured-geothermal reservoirs, although the discussion included here accommodates a wide range of related aspects. Influences of parameters associated with hydrocarbon (especially methane) solubility have been studied. We have sought to evaluate several primary hydrocarbon migration processes and to point out their attractive features as well as their limitations. A brief discussion of hydrocarbon generation processes is also included.

  7. Present status of the geochronology of the early Precambrian of South India

    NASA Technical Reports Server (NTRS)

    Gopalan, K.; Srinivasan, R.

    1988-01-01

    The present status of Precambrian geochronology of South India was summarized. Support was offered for Raith's conclusion of an extensive 3.3 to 3.4-Ga tonalite-forming event. Evidence that the Sargur supracrustal sequence predates this event, however, remains equivocal. The only reliably dated supracrustal rocks are the similar to 3.0-Ga Chitradurga acid volcanics, and these are separated from the older Bababudan supracrustals by a major gneiss-forming event. A major unsolved problem relates to the timing of the Sargur supracrustals in relation to the basal units of the Dharwar succession. An appeal was made for more geochronological work on South Indian samples.

  8. Solar cell experiments for space: past, present and future

    NASA Astrophysics Data System (ADS)

    Hoheisel, R.; Messenger, S. R.; Lumb, M. P.; Gonzalez, M.; Bailey, C. G.; Scheiman, D. A.; Maximenko, S.; Jenkins, P. P.; Walters, R. J.

    2013-03-01

    Since the early beginnings of the space age in the 1950s, solar cells have been considered as the primary choice for long term electrical power generation of satellites and space systems. This is mainly due to their high power/mass ratio and the good scalability of solar modules according to the power requirements of a space mission. During the last decades, detailed solar cell material studies including the non-trivial interaction with high-energy space particles have led to continuous and significant improvements in device efficiency. This allowed the powering of advanced space systems like the International Space Station, rovers on the Martian surface as well as satellites which have helped to understand the universe and our planet. It is noteworthy that in addition to their success in space, these photovoltaic technologies have also broken ground for the application of photovoltaic systems in terrestrial systems. This paper discusses the development of space solar cells, gives insight into related experiments like the analysis of the interaction with space particles and provides an overview on challenges and requirements for future space missions.

  9. Toward space solar power: Wireless energy transmission experiments past, present and future

    NASA Astrophysics Data System (ADS)

    Little, Frank E.; McSpadden, James O.; Chang, Kai; Kaya, Nobuyuki

    1998-01-01

    Solar power is a reality. Today, increasing numbers of photovoltaic and other solar-powered installations are in service around the world and in space. These uses range from the primary electric power source for satellites, remote site scientific experiments and villages in developing countries to augmenting the commercial electric grid and providing partial power for individual businesses and homeowners in developed countries. In space, electricity generated by photovoltaic conversion of solar energy is the mainstay of power for low Earth and geostationary satellite constellations. Still, for all its acceptance as a benign and environmentally friendly energy source, terrestrial solar power has yet to be seriously considered a viable technology for providing base electrical generating capacity. The obvious reason is sunshine on Earth is too unreliable. In addition to the diurnal and seasonal cycles, inclement weather reduces the average daily period and intensity of insolation. However, the Sun shines constantly in space. The challenge is to harvest and transmit the energy from space to Earth. The concept of space solar power based on microwave wireless energy transmission was first put forth more than 25 years ago by Dr. Peter Glaser. We review historical experiments in wireless energy transmission which have brought the technology from a laboratory curiosity to its present status. Results from recent experiments and their implications for wireless energy transmission as an enabling technology for space solar power are reviewed. Current developments are discussed along with proposed terrestrial and space experiments.

  10. Experience with CPV Module Failures at NREL (Presentation)

    SciTech Connect

    Muller, M.

    2012-03-01

    The failures and performance issues associated with three years of on-sun testing of CPV modules are discussed. Pictures of various failure mechanisms and performance issues are presented. A wide array of CPV module failures and performance issues have been experienced at NREL. Many of the modules are prototypes and have not been through qualification testing. It is assumed that the qualification test would have captured many of the problems. Internal lens soiling due to condensation is not currently captured by the qualification test. Lens temperature dependence can be built into modeling if CPV is to operate in cold locations.

  11. Present Context of Fusion Research and the Ignitor Experiment

    NASA Astrophysics Data System (ADS)

    Ignitor Project Group; Coppi, B.

    1996-11-01

    The importance of investigating plasmas under ignition conditions has been repeatedly recognized recently. In addition, confinement experiments by high field compact machines, Alcator C-Mod in particular, have confirmed the validity of the machine parameters that have been chosen (B_T~=13 T, R_0~=1.32 m, a~=0.47 m, b~=0.87 m, δ_t~=0.4). The reference discharges for the machine design involve reaching I_p^T~=12 MA in 4 sec with an edge safety factor q_ψ~=3.3, and then decreasing I_p^T gradually to 10 MA after 1 sec to prevent the q=1 surface from becoming too large. Alternatively, I_p^T is held constant at 11 MA, corresponding to q_ψ~=3.6, for 4.5 sec. For low values of β_p, where the configuration is nearly force-free, a high poloidal plasma current is produced (

  12. Present status of GaAs. [including space processing and solid state applications

    NASA Technical Reports Server (NTRS)

    Gatos, H. C.; Lagowski, J.; Jastrzebski, L.

    1979-01-01

    An extensive literature survey on GaAs was carried out for the period December 31, 1970, to December 31, 1977. The increasing interest in GaAs device structures increased steadily during that period. The leading research and development centers and the specific areas of interest were identified. A workshop on GaAs was held in November 1977 to assess the present status of melt-grown GaAs and the existing needs for reliable chemical, structural, and electronic characterization methods. It was concluded that the present available bulk GaAs crystals are of poor quality and that GaAs technology is lagging demonstrated or potentially feasible GaAs devices and systems.

  13. [Ictal catatonia presentation as a non-convulsive status epilepticus: A case report].

    PubMed

    Gaete, Germán; Velásquez, Álvaro

    2017-01-01

    The differential diagnosis of non-convulsive status epilepticus (NCSE) is often complex due to a wide clinical variability of its presentation, including psychiatric manifestations. We report a 68 years old male with a history of depression treated with venlafaxine, mirtazapine, quetiapine and risperidone, presenting in the emergency room with confusion and generalized rigidity. A brain CT scan did not show lesions. A neuroleptic syndrome was initially suspected. At the third day the obtundation worsened and an electroencephalogram (EEG) was performed, which showed epileptiform abnormalities. Treatment with valproic acid resulted in disappearance of such abnormalities. After three weeks of mechanical ventilation, the patient was extubated and remained lucid and partially orientated in time and space.

  14. An optical read-out system for the LISA gravitational reference sensor: present status and perspectives.

    NASA Astrophysics Data System (ADS)

    Grado, A.; De Rosa, R.; Di Fiore, L.; Garufi, F.; Milano, L.; Russano, G.; Spagnuolo, V.

    2017-05-01

    Since a few years, the LISA-PF group in Napoli has been working to the development of an optical read-out system, based on optical levers and position sensitive detectors, for the LISA Gravitational Reference Sensor (GRS). This is intended as a more sensitive extra sensing device, in addition to capacitive readout that is the reference solution already tested on flight by the LISA-Pathfinder mission. The reliability of the proposed ORO device and the fulfillment of the sensitivity goals have been already demonstrated in bench-top measurements and tested with torsion pendulum facilities. In this paper we report on the present status of this activity, presenting the results obtained so-far and the perspectives for the future LISA mission.

  15. The NUSTAR program at FAIR. Overview and present status of the project

    NASA Astrophysics Data System (ADS)

    Herlert, Alexander

    2014-04-01

    The NUSTAR Collaboration brings together several hundred scientists to form one of the four scientific pillars of the future FAIR facility. NUSTAR aims at the exploitation of intense radioactive beams with energies up to 1.5 GeV/u in order to explore nuclei with large neutron or proton excess. The project has evolved over the last years and now reached a state where a large fraction of the core program is financed, partly built, and even ready for operation. With the signing of the FAIR convention in 2010 and the start of construction, the sub-projects in NUSTAR gain momentum and look forward to commissioning and first beams in this decade. The present status of the project will be presented, focusing on the instrumentation to be applied in the various experimental areas behind the Super-FRS fragment separator, which is the central instrument of NUSTAR.

  16. Thermal hydraulic codes for LWR safety analysis - present status and future perspective

    SciTech Connect

    Staedtke, H.

    1997-07-01

    The aim of the present paper is to give a review on the current status and future perspective of present best-estimate Thermal Hydraulic codes. Reference is made to internationally well-established codes which have reached a certain state of maturity. The first part of the paper deals with the common basic code features with respect to the physical modelling and their numerical methods used to describe complex two-phase flow and heat transfer processes. The general predictive capabilities are summarized identifying some remaining code deficiencies and their underlying limitations. The second part discusses various areas including physical modelling, numerical techniques and informatic structure where the codes could be substantially improved.

  17. Focal status epilepticus as atypical presentation of pyridoxine-dependent epilepsy.

    PubMed

    Yoshii, Akira; Takeoka, Masanori; Kelly, Peter J; Krishnamoorthy, Kalpahty S

    2005-08-01

    Pyridoxine-dependent epilepsy usually presents in the neonatal period or even in utero, is refractory to antiepileptic medications, and is treatable with lifelong administration of pyridoxine. The seizures are typically generalized tonic-clonic, although myoclonic seizures or infantile spasms have been described. We report an infant who presented at 5 months of age with a right-sided clonic seizure with fever. Subsequently, she had recurrent right focal or generalized seizures despite sequential treatment with various antiepileptic medications. At 7 months, she was hospitalized with status epilepticus, which was finally controlled with pyridoxine. After she became seizure free, she continued to have a strong left arm preference with mild weakness of the right arm and delayed language skill. Eventually, she outgrew these symptoms. This case illustrates that pyridoxine-dependent epilepsy, although rare, must be included in the differential diagnosis of focal seizures, especially when the seizures are refractory to traditional antiepileptic drugs.

  18. From laboratory to industry Phasics experience (Conference Presentation)

    NASA Astrophysics Data System (ADS)

    Wattellier, Benoit F.; Lebrun, Marie-Begoña.

    2016-03-01

    We describe several examples of technology transfer from academic laboratories to PHASICS. PHASICS was created in 2003 as a spin-off of LULI an academic laboratory working on plasma physics and developing high power lasers to create such objects which temperature and pressure conditions are close to those at the center of stars. In order to optimize the intensity at laser focus, several thesis treated the subject of adaptive optics for lasers. LULI decided to collaborate with ONERA who just invented a technique for wave front sensing called multiwave lateral shearing interferometry. Though developed at first for infrared metrology applications, this technique proved to be very efficient with lasers because it was able to analyze wave front of modulated beams with sharp edges. Before being industrialized the technique was further improved to a compact version called quadriwave lateral shearing interferometry. As soon as PHASICS was created, we felt the potential of making wave front images from transparent objects because of QWLSI high spatial resolution. PHASICS and Institut Fresnel started a collaboration to study applications in microscopy imaging. Research subjects include biological imaging, CARS microscopy, anisotropy imaging, or laser damage testing. The results of research were then included in PHASICS products but sometimes only a tool developed during the project became a product. We will present research works that led to transfers as well as the method we used to ensure fruitful collaboration and transfer.

  19. Health and environmental impact of mercury: Past and present experience

    NASA Astrophysics Data System (ADS)

    Rivera, A. T. F.; Cortes-Maramba, N. P.; Akagi, H.

    2003-05-01

    Mercury exists in various forms including metallic mercury, inorganie and organic mercury compounds. Research studies show that contamination brought about by natural and man-made activities is clearly a growing problem today. In 1956, the first recognized poisoning outbreaks occurred. Minamata Disease is a disorder of the central nervous system caused by the consumption of fish and shellfish contaminated with methylmercury. Clinical manifestation differs from inorganic mercury poisoning in which the kidneys and the renal system are damaged. The toxidrome consists of sensory disorders in the distal portion of the four extremities, cerebral ataxia, bilateral concentric constriction of the visual field. central disorder of ocular movement, central hearing impairment and disequilibrium. Fetal type Minamata Disease bom of mothers being exposed to methylmercury during pregnancy resulted in conditions similar to those associated with “infantile cerebral palsy" were also documented. Measures to control environmental pollution were implemented such as the environmental restoration project, compensation and relief of victims as part of the health and environmental management undertaken by the government. At present, global research studies are focusing on long-term and low-dose inorganic and methyl mercury exposure; and developmental neurobehavioral toxicity including relevant environmental factors influencing mercury transformations, mass balances and partitioning in ecosystems.

  20. Insurance Status is Associated with Acuity of Presentation and Outcomes for Thoracic Aortic Operations

    PubMed Central

    Andersen, Nicholas D.; Brennan, J. Matthew; Zhao, Yue; Williams, Judson B.; Williams, Matthew L.; Smith, Peter K.; Scarborough, John E.; Hughes, G. Chad

    2014-01-01

    Background Non-elective procedure status is the greatest risk factor for postoperative morbidity and mortality in patients undergoing thoracic aortic operations. We hypothesized that uninsured patients were more likely to require non-elective thoracic aortic operation due to decreased access to preventative care and elective surgical services. Methods and Results An observational study of the Society of Thoracic Surgeons Database identified 51,282 patients who underwent thoracic aortic surgery between 2007–2011 at 940 North American centers. Patients were stratified by insurance status (private insurance, Medicare, Medicaid, other insurance, or uninsured) as well as age < 65 years or age ≥ 65 years to account for differences in Medicare eligibility. The need for non-elective thoracic aortic operation was highest for uninsured patients (71.7%) and lowest for privately insured patients (36.6%). The adjusted risks of non-elective operation were increased for uninsured patients (adjusted risk ratio [ARR], 1.77; 95% confidence interval [CI], 1.70–1.83 for age < 65 years; ARR, 1.46; 95% CI, 1.29–1.62 for age ≥ 65 years) as well as Medicaid patients age < 65 years (ARR, 1.18; 95% CI, 1.10–1.26) when compared to patients with private insurance. The adjusted odds of major morbidity and/or mortality were further increased for all patients age < 65 years without private insurance (ARRs between 1.13 and 1.27). Conclusions Insurance status was associated with acuity of presentation and major morbidity and mortality for thoracic aortic operations. Efforts to reduce insurance-based disparities in the care of patients with thoracic aortic disease appear warranted and may reduce the incidence of aortic emergencies and improve outcomes after thoracic aortic surgery. PMID:24714600

  1. Primary hyperparathyroidism presenting as hypercalcemic crisis: Twenty-year experience.

    PubMed

    Singh, Dependra Narayan; Gupta, Sushil Kumar; Kumari, Niraj; Krishnani, Narendra; Chand, Gyan; Mishra, Anjali; Agarwal, Gaurav; Verma, Ashok Kumar; Mishra, Saroj Kanta; Agarwal, Amit

    2015-01-01

    To study hyperparathyroid-induced hypercalcemic crisis (HIHC). We see very advanced cases of primary hyperparathyroidism (PHPT) and therefore, we sought to determine the incidence of HIHC in our surgically-treated PHPT patients, clinical presentation, and short- and long-term results with the use of bisphosphonate therapy and expeditious parathyroidectomy over a 20-year period at a single institution. Retrospective review of PHPT patients at Department of Endocrine Surgery, a tertiary care referral center. Retrospective review of 177 patients of advanced PHPT who underwent parathyroidectomy at a single institution from 1989 to 2010. All patients with serum calcium ≥14 mg/dl (≥3.5 mmol/l) were included in HIHC group. Analysis of variance (ANOVA) was used to determine differences between groups. Data is expressed as mean ± standard error of the mean (SEM); P values less than 0.05 were considered significant. We observed a higher incidence of HIHC (n = 37, 21%) with higher incidence of pancreatitis (n = 5, 13.5%). Crisis patients had heavier (6,717 mg) glands. Use of bisphosphonate therapy in seven crisis patients resulted in quicker lowering of serum calcium (mean: 4.5 vs 14.6 days in other crisis patients, P = 0.027) permitting early surgery. The incidence of postoperative hypocalcemia was not higher in these patients. Although the parathyroid adenoma was common pathology in both the groups, the incidence of parathyroid carcinoma was higher in crisis group (10.8%). Outcome with regards to postoperative eucalcemia was similar in both groups. Crisis patients are at risk of developing pancreatitis. Bisphosphonate therapy has the potential to quickly lower the serum calcium permitting early surgery without added risk of postoperative hypocalcemia. Successful and sustained eucalcemia with excellent long-term survival is possible with use of bisphosphonates and semi-emergent, focused parathyroidectmy.

  2. Nuclear data for production and medical application of radionuclides: Present status and future needs.

    PubMed

    Qaim, Syed M

    2017-01-01

    The significance of nuclear data in the choice and medical application of a radionuclide is considered: the decay data determine its suitability for organ imaging or internal therapy and the reaction cross section data allow optimisation of its production route. A brief discussion of reaction cross sections and yields is given. The standard SPECT, PET and therapeutic radionuclides are enumerated and their decay and production data are considered. The status of nuclear data is generally good. Some existing discrepancies are outlined. A few promising alternative production routes of (99m)Tc and (68)Ga are discussed. The increasing significance of non-standard positron emitters in organ imaging and of low-energy highly-ionizing radiation emitters in internal therapy is discussed, their nuclear data are considered and a brief review of their status is presented. Some other related nuclear data issues are also mentioned. The data needs arising from new directions in radionuclide applications (multimode imaging, theranostic approach, radionanoparticles, etc.) are considered. The future needs of data associated with possible utilization of newer irradiation technologies (intermediate energy cyclotron, high-intensity photon accelerator, spallation neutron source, etc.) are outlined. Except for a few small discrepancies, the available nuclear data are sufficient for routine production and application of radionuclides. Considerable data needs exist for developing novel radionuclides for applications. The developing future technologies for radionuclide production will demand further data-related activities. Copyright © 2016 Elsevier Inc. All rights reserved.

  3. Status and Plans for the XENON Dark Matter Experiment

    NASA Astrophysics Data System (ADS)

    Gaitskell, R. J.; Collaborotion, Xenon

    2005-04-01

    The XENON experiment aims at the direct detection of dark matter in the form of WIMPs (Weakly Interacting Massive Particles) via their elastic scattering off Xenon nuclei. With a fiducial mass of 1000 kg of liquid xenon, a sufficiently low threshold of 16 keV recoil energy and an un-rejected background rate of 10 events per year, XENON would be sensitive to a WIMP-nucleon interaction cross section of ~ 10-46cm2, for WIMPs with masses above 50 GeV. A 1 tonne scale experiment (XENON1T) would be realized with an array of ten identical 100 kg detector modules (XENON100). The detectors are time projection chambers operated in dual (liquid/gas) phase, to detect simultaneously the ionization, through secondary scintillation in the gas, and primary scintillation in the liquid produced by low energy recoils. The distinct ratio of primary to secondary scintillation for nuclear recoils from WIMPs (or neutrons), and for electron recoils from background, is key to the event-by-event discrimination capability of XENON. A 3kg dual phase detector with light readout provided by an array of 7 photomultipliers is currently being tested, along with other prototypes dedicated to various measurements relevant to the XENON program. We present some of the results obtained to-date and briefly discuss the next step in the phased approach to the XENON experiment, i.e. the development and underground deployment of a 10 kg detector (XENON10) during 2005.

  4. Free-ocean CO2 enrichment (FOCE) systems: present status and future developments

    NASA Astrophysics Data System (ADS)

    Gattuso, J.-P.; Kirkwood, W.; Barry, J. P.; Cox, E.; Gazeau, F.; Hansson, L.; Hendriks, I.; Kline, D. I.; Mahacek, P.; Martin, S.; McElhany, P.; Peltzer, E. T.; Reeve, J.; Roberts, D.; Saderne, V.; Tait, K.; Widdicombe, S.; Brewer, P. G.

    2014-08-01

    Free-ocean CO2 enrichment (FOCE) systems are designed to assess the impact of ocean acidification on biological communities in situ for extended periods of time (weeks to months). They overcome some of the drawbacks of laboratory experiments and field observations by enabling (1) precise control of CO2 enrichment by monitoring pH as an offset of ambient pH, (2) consideration of indirect effects such as those mediated through interspecific relationships and food webs, and (3) relatively long experiments with intact communities. Bringing perturbation experiments from the laboratory to the field is, however, extremely challenging. The main goal of this paper is to provide guidelines on the general design, engineering, and sensor options required to conduct FOCE experiments. Another goal is to introduce xFOCE, a community-led initiative to promote awareness, provide resources for in situ perturbation experiments, and build a user community. Present and existing FOCE systems are briefly described and examples of data collected presented. Future developments are also addressed as it is anticipated that the next generation of FOCE systems will include, in addition to pH, options for oxygen and/or temperature control. FOCE systems should become an important experimental approach for projecting the future response of marine ecosystems to environmental change.

  5. (237)Np(n,f) Cross Section: New Data and Present Status

    SciTech Connect

    Paradela, C.; Koehler, Paul Edward; N_TOF collaboration,

    2011-01-01

    In this document, we present the final result obtained at the n-TOF experiment for the neutron-induced fission cross section of the {sup 237}Np, from the fission threshold up to 1 GeV. The method applied to get this result is briefly discussed. n-TOF data are compared to the last experimental measurements using other TOF facilities or the surrogate method, reported experiments performed with monoenergetic sources and the FISCAL systematic, including a discussion about the existing discrepancies.

  6. Nuclear data for medical applications: An overview of present status and future needs

    NASA Astrophysics Data System (ADS)

    Syed, M. Qaim

    2017-09-01

    A brief overview of nuclear data required for medical applications is given. The major emphasis is on radionuclides for internal applications, both for diagnosis and therapy. The status of the presently available data is discussed and some of the emerging needs are outlined. Most of the needs are associated with the development of non-standard positron emitters and novel therapeutic radionuclides. Some new developments in application of radionuclides, e.g. theranostic approach, multimode imaging, radionanoparticles, etc. are described and the related nuclear data needs are discussed. The possible use of newer irradiation technologies for medical radionuclide production, e.g. intermediate energy charged-particle accelerators, high-power electron accelerators for photon production, and spallation neutron sources, will place heavy demands on nuclear data.

  7. National Registry of Designated Intractable Diseases in Japan: Present Status and Future Prospects

    PubMed Central

    KANATANI, Yasuhiro; TOMITA, Naoko; SATO, Yoko; ETO, Akiko; OMOE, Hiroe; MIZUSHIMA, Hiroshi

    2017-01-01

    Japan promotes research related to intractable diseases and financially supports patients with these diseases. Intractable diseases are designated as those that fulfill the following criteria: (1) rarity (affecting less than 0.1% of the population in Japan), (2) unknown etiology, (3) lack of effective treatment, (4) necessity of long-term treatment, and (5) existence of objective diagnostic criteria and not necessarily equal to rare diseases in other countries. The construction of a national database is required to promote research to clarify the pathogenesis of these diseases and to develop pharmaceutical products and medical devices. The Ministry of Health, Labor, and Welfare launched an online registration system in 2001, but many problems associated with gathering and utilizing information on patients with intractable diseases remain. In this paper, we describe the present status of the national registry of designated intractable diseases in Japan and discuss future prospects. PMID:27666154

  8. Endangered vascular plants in Japan--present status and a proposal for conservation.

    PubMed

    Iwatsuki, Kunio

    2008-01-01

    The history of the Red List of Japanese vascular plants is briefly reviewed for editing and research. Especially on the results of recent monitoring, the present status of information and conservation activities on the endangered plants in Japan is discussed and the dynamics of the Japanese flora are taken up, in relation to basic research on plant biodiversity on the Japanese Archipelago. The figures of endangered plants are not very variable during the past quarter of a century, but we can surmise that the conservation of threatened species in Japan has been promoted to some extent. Based on the results of such a study, proposals are made to contribute to the sustainable use of plant biodiversity on the Japanese Archipelago under a global conspectus.

  9. The Data Quality and Analysis Status of the Proton Charge Radius (PRad) Experiment at JLab

    NASA Astrophysics Data System (ADS)

    Xiong, Weizhi; PRad Collaboration

    2017-01-01

    In order to investigate the proton radius puzzle, the PRad experiment (E12-11-106) was performed in 2016 in Hall B at Jefferson Lab. The experiment aims to extract the electric form factor of proton in an unprecedented low Q2 region (2 ×10-4 - 0 . 1(GeV / c) 2), with a sub-percent precision. The PRad experiment utilizes a non-magnetic calorimetric method with a high efficiency and high resolution calorimeter (HyCal), and two Gas Electron Multiplier (GEM) detectors. The systematic uncertainties are well controlled by two main advantages of the experiment: (1) The electron-proton (e - p) elastic scattering cross section is normalized to the well-known M øller scattering process, which is measured simultaneously during the experiment; (2) The H2 gas flow target has no cell windows at both ends, which created primary backgrounds in the previous e - p elastic scattering experiments. Thus the PRad experiment largely suppresses the two major systematic uncertainties in the previous magnetic spectrometric e - p elastic scattering experiments. In this talk, we will discuss the data quality and analysis status, and present the first preliminary results from the current analysis process. This work is supported in part by the U.S. Department of Energy under Contract No. DE-FG02-03ER41231, NSF MRI award PHY-1229153, Thomas Jefferson National Accelerator Facility and Duke University.

  10. Stature signals status: The association of stature, status and perceived dominance - a thought experiment.

    PubMed

    Hermanussen, Michael; Scheffler, Christiane

    2016-11-01

    Background: There is a common perception that tall stature results in social dominance. Evidence in meerkats suggests that social dominance itself may be a strong stimulus for growth. Relative size serves as the signal for individuals to induce strategic growth adjustments. Aim: We construct a thought experiment to explore the potential consequences of the question: is stature a social signal also in humans? We hypothesize that (1) upward trends in height in the lower social strata are perceived as social challenges yielding similar though attenuated upward trends in the dominant strata, and that (2) democratization, but also periods of political turmoil that facilitate upward mobility of the lower strata, are accompanied by upward trends in height. Material and methods: We reanalyzed large sets of height data of European conscripts born between 1856-1860 and 1976-1980; and annual data of German military conscripts, born between 1965 and 1985, with information on height and school education. Results: Taller stature is associated with higher socioeconomic status. Historic populations show larger height differences between social strata that tend to diminish in the more recent populations. German height data suggest that both democratization, and periods of political turmoil facilitating upward mobility of the lower social strata are accompanied by a general upward height spiral that captures the whole population. Discussion: We consider stature as a signal. Nutrition, health, general living conditions and care giving are essential prerequisites for growth, yet not to maximize stature, but to allow for its function as a lifelong social signal. Considering stature as a social signal provides an elegant explanation of the rapid height adjustments observed in migrants, of the hitherto unexplained clustering of body height in modern and historic cohorts of military conscripts, and of the parallelism between changes in political conditions, and secular trends in adult

  11. Free Ocean CO2 Enrichment (FOCE) systems: present status and future developments

    NASA Astrophysics Data System (ADS)

    Gattuso, J.-P.; Kirkwood, W.; Barry, J. P.; Cox, E.; Gazeau, F.; Hansson, L.; Hendriks, I.; Kline, D. I.; Mahacek, P.; Martin, S.; McElhany, P.; Peltzer, E. T.; Reeve, J.; Roberts, D.; Saderne, V.; Tait, K.; Widdicombe, S.; Brewer, P. G.

    2014-03-01

    Free Ocean CO2 Enrichment (FOCE) systems are designed to assess the impact of ocean acidification on biological communities in situ for extended periods of time (weeks to months). They overcome some of the drawbacks of laboratory experiments and of field observations by enabling (1) precise control of CO2 enrichment by monitoring pH as an offset of ambient pH, (2) consideration of indirect effects such as those mediated through inter-specific relationships and food-webs, and (3) relatively long experiments with intact communities. Bringing perturbation experiments from the laboratory to the field is however extremely challenging. The goal of this paper is to provide guidelines on the general design, engineering, and sensors required to conduct FOCE experiments. Present and existing FOCE systems are briefly described and examples of data collected presented. Future developments are also addressed as it is anticipated that the next generation of FOCE systems will include, in addition to pH, options for oxygen and/or temperature control. FOCE systems should become an important experimental approach for projecting the future response of marine ecosystems to environmental change.

  12. Direct dark matter search with the CRESST-III experiment - status and perspectives

    NASA Astrophysics Data System (ADS)

    Willers, M.; Angloher, G.; Bento, A.; Bucci, C.; Canonica, L.; Defay, X.; Erb, A.; Feilitzsch, F. v.; Ferreiro Iachellini, N.; Gütlein, A.; Gorla, P.; Hauff, D.; Jochum, J.; Kiefer, M.; Kluck, H.; Kraus, H.; Lanfranchi, J.-C.; Loebell, J.; Mancuso, M.; Münster, A.; Pagliarone, C.; Petricca, F.; Potzel, W.; Pröbst, F.; Puig, R.; Reindl, F.; Schäffner, K.; Schieck, J.; Schönert, S.; Seidel, W.; Stahlberg, M.; Stodolsky, L.; Strandhagen, C.; Strauss, R.; Tanzke, A.; Trinh Thi, H. H.; Türkoǧlu, C.; Uffinger, M.; Ulrich, A.; Usherov, I.; Wawoczny, S.; Wüstrich, M.; Zöller, A.

    2017-09-01

    The CRESST-III experiment, located in the Gran Sasso underground laboratory (LNGS, Italy), aims at the direct detection of dark matter (DM) particles. Scintillating CaWO4 crystals operated as cryogenic detectors are used as target material for DM-nucleus scattering. The simultaneous measurement of the phonon signal from the CaWO4 crystal and of the emitted scintillation light in a separate cryogenic light detector is used to discriminate backgrounds from a possible dark matter signal. The experiment aims to significantly improve the sensitivity for low-mass (≲ 5-10 GeV/c2) DM particles by using optimized detector modules with a nuclear recoil-energy threshold ≲ 100 eV. The current status of the experiment as well as projections of the sensitivity for spin-independent DM-nucleon scattering will be presented.

  13. Latest Results from NEMO-3 & Status of the SuperNEMO Experiment

    NASA Astrophysics Data System (ADS)

    Waters, David; ">NEMO-3, experiments have particular strengths, including the ability to search for neutrinoless double-beta decay amongst several different isotopes hosted in source foils. Full event reconstruction provides powerful background rejection capability, and the ability to disentangle different mechanisms for neutrinoless double-beta decay in the event of its discovery. These proceedings will give the latest results from the NEMO-3 experiment, including new double-beta decay measurements using the isotopes 48Ca and 150Nd. The current status and future prospects for the SuperNEMO experiment will also be presented.

  14. Status of the STACEE Experiment and Recent Observations.

    NASA Astrophysics Data System (ADS)

    Fortin, P.; Boone, L. M.; Bramel, D.; Carson, J.; Chae, E.; Covault, C. E.; Gingrich, D. M.; Hanna, D. S.; Hinton, J. A.; Mukherjee, R.; Mueller, C.; Ong, R. A.; Ragan, K.; Scalzo, R. A.; Schuette, D. R.; Theoret, C. G.; Williams, D. A.; Wong, J.; Zweerink, J.

    2002-05-01

    The Solar Tower Atmospheric Cherenkov Effect Experiment (STACEE) is a ground-based gamma-ray telescope designed to study astrophysical sources of gamma rays in the energy range from 50 to 500 GeV. STACEE uses an array of 64 heliostat mirrors at the National Solar Thermal Test Facility in New Mexico to collect Cherenkov light generated by extended air showers and concentrate it onto cameras composed of photomultiplier tubes. The full STACEE experiment is now complete and started observations in October 2001. The telescope has a lower energy threshold than previous prototype due to superior triggering and electronics, including flash ADCs for every channel. Here we will discuss the performance of the complete instrument and present preliminary results of selected observations. This work was supported in part by the National Science Foundation (under Grant Numbers PHY-9983836, PHY-0070927, and PHY-0070953), the Natural Sciences and Engineering Research Council, FCAR (Fonds pour la Formation de Chercheurs et l'Aide à la Recherche), the Research Corporation and the California Space Institute. CEC is a Cottrell Scholar of the Research Corporation.

  15. Social status and energy intake: a randomized controlled experiment.

    PubMed

    Pavela, G; Lewis, D W; Dawson, J A; Cardel, M; Allison, D B

    2017-10-01

    While the inverse association between socioeconomic status (SES) and obesity in high gross domestic product countries is well established using observational data, the extent to which the association is due to a true causal effect of SES and, if so, the mechanisms of this effect remain incompletely known. To assess the influence of social status on obesity via energy intake, we randomized individuals to a higher or lower social status and observed subsequent energy intake. College students between the ages of 18 and 25 were randomized to social status and were operationalized as being a leader or follower in a partner activity as purportedly determined by a (bogus) test of leadership ability. Investigators were blinded to treatment assignment. Immediately after being told their leadership assignment, paired participants were provided with platters of food. Energy intake was objectively measured in kilocalories (kcal) consumed, and paired t-tests were used to test for significant differences in intake between leaders and followers. A total of 60 participants were included in the final analysis (males = 28, females = 32). Overall, no difference in energy intake was observed between leaders and followers, consuming an average of 575.3 and 579.8 kcal, respectively (diff = 4.5 kcal, P = 0.94). The null hypothesis of no effect of social status, operationalized as assignment to a leadership position in a small-group activity, on energy intake was not rejected. © 2017 World Obesity Federation.

  16. Immune status at presentation for human immunodeficiency virus clinical care in Rio de Janeiro and Baltimore

    PubMed Central

    Moreira, Ronaldo I.; Luz, Paula M.; Struchiner, Claudio J.; Morgado, Mariza; Veloso, Valdilea G.; Keruly, Jeanne C.; Grinsztejn, Beatriz; Moore, Richard D.

    2011-01-01

    Introduction Late presentation to HIV clinical care increases individual risk of (multiple) clinical events and death, and decreases successful response to highly active antiretroviral therapy (HAART). In Brazil, provision of HAART free of charge to all HIV-infected individuals could lead to increased testing and linkage to care. Methods We assessed the immune status of 2,555 patients who newly presented for HIV clinical care between 1997 and 2009 at the Johns Hopkins Clinical Cohort, in Baltimore, USA and at the Instituto de Pesquisa Clinica Evandro Chagas Clinical Cohort, in Rio de Janeiro, Brazil. The mean change in the CD4 cell count per year was estimated using multivariate linear regression models. Results Overall, from 1997 to 2009, 56% and 54% of the patients presented for HIV clinical care with CD4 count ≤ 350 cells/mm3 in Baltimore and Rio de Janeiro, respectively. On average, 75% of the patients presented with viral load > 10,000 copies/mL. In Rio de Janeiro only, the overall adjusted per year increase in the mean CD4 cell count was statistically significant [5 cells/mm3 (95% CI 1, 10 cells/mm3)]. Discussion We found that, over years, the majority of patients presented late, that is, with a CD4 count < 350 cells/mm3. Our findings indicate that, despite the availability of HAART for more than a decade, and mass media campaigns stimulating HIV testing in both countries, the proportion of patients who start therapy at an advanced stage of the disease is still high. PMID:21857314

  17. Immune status at presentation for HIV clinical care in Rio de Janeiro and Baltimore.

    PubMed

    Moreira, Ronaldo I; Luz, Paula M; Struchiner, Claudio J; Morgado, Mariza; Veloso, Valdilea G; Keruly, Jeanne C; Grinsztejn, Beatriz; Moore, Richard D

    2011-08-01

    Late presentation to HIV clinical care increases individual risk for (multiple) clinical events and death, and decreases successful response to highly active antiretroviral therapy (HAART). In Brazil, provision of HAART free of charge to all individuals infected with HIV could lead to increased testing and linkage to care. We assessed the immune status of 2555 patients who newly presented for HIV clinical care between 1997 and 2009 at the Johns Hopkins Clinical Cohort, in Baltimore, Md, and at the Instituto de Pesquisa Clinica Evandro Chagas Clinical Cohort, in Rio de Janeiro, Brazil. The mean change in the CD4 cell count per year was estimated using multivariate linear regression models. Overall, from 1997 to 2009, 56% and 54% of the patients presented for HIV clinical care with CD4 count ≤350 cells per cubic millimeter in Baltimore and Rio de Janeiro, respectively. On average, 75% of the patients presented with viral load >10,000 copies per millimeter. In Rio de Janeiro only, the overall adjusted per year increase in the mean CD4 cell count was statistically significant (5 cells/mm, 95% confidence interval: 1 to 10 cells/mm). We found that, over years, the majority of patients presented late, that is, with a CD4 count <350 cells per cubic millimeter. Our findings indicate that, despite the availability of HAART for more than a decade, and mass media campaigns stimulating HIV testing in both countries, the proportion of patients who start therapy at an advanced stage of the disease is still high.

  18. Tetramethylenedisulfotetramine intoxication presenting with de novo Status Epilepticus: a case series.

    PubMed

    Li, Jin-Mei; Gan, Jing; Zeng, Tian-Fang; Sander, Josemir W; Zhou, Dong

    2012-03-01

    Tetramethylenedisulfotetramine (TETS), a neurotoxic rodenticide banned in China, has repeatedly been shown to kill healthy people. We report a series of nine people with TETS intoxication presenting with Convulsive Status Epilepticus (CSE) as the initial manifestation. Median duration of CSE after admission was 6h. All had normal neuro-imaging but inter-ictal EEG showed bilateral epileptic waves. Despite aggressive anti-convulsive treatment, attempts at reducing TETS levels and supportive therapy, outcomes were poor. Multiple organ dysfunction syndrome (MODS) occurred in six people, of whom three died. TETS exposure should be part of the differential diagnosis in people presenting with unexplained SE in rural China, particularly if this occurs in family clusters. Over 14,000 cases of TETS intoxication occurred in China between 1 January 1991 and 31 December 2010, and 932 of these died. Cases were widely distributed throughout the country, occurring primarily in rural areas. CSE seems to be a frequent symptom of severe intoxication. There is, however, still a lack of information about the hazards of TETS and it is imperative that both the public and physicians are made aware of its risks and complications.

  19. Present-day status of investigations of anthropogenic influence on atmospheric ozone

    NASA Astrophysics Data System (ADS)

    Kondratyev, K. Y.

    1984-05-01

    The present day status of research on global spatial-temporal variability of the total content of atmospheric ozone is described. There is still a probable risk of weakening of the ozone layer as a result of the discharge of fluorocarbons, although in the future attention must also be given to other halogenated compounds which may reach the stratosphere. Should the discharge of fluorocarbons continue at the present rate, this should eventually lead to a decrease in the total ozone content by approximately 10%. For the time being there are no anthropogenically caused changes in the total ozone content. Numerical modeling indicates the existence of latitudinal and seasonal variations which must be taken into account in estimates of the consequences of a decrease in ozone content for man's health and the environment. There is a need for continuing and expanding programs for investigating all the main aspects of the problem, including numerical modeling, long-term global monitoring and laboratory measurements. A priority item is the monitoring of the ozone concentration at altitudes greater than 35 km where it is most responsive to anthropogenic effects.

  20. Radiotherapy infrastructure and human resources in Switzerland : Present status and projected computations for 2020.

    PubMed

    Datta, Niloy Ranjan; Khan, Shaka; Marder, Dietmar; Zwahlen, Daniel; Bodis, Stephan

    2016-09-01

    The purpose of this study was to evaluate the present status of radiotherapy infrastructure and human resources in Switzerland and compute projections for 2020. The European Society of Therapeutic Radiation Oncology "Quantification of Radiation Therapy Infrastructure and Staffing" guidelines (ESTRO-QUARTS) and those of the International Atomic Energy Agency (IAEA) were applied to estimate the requirements for teleradiotherapy (TRT) units, radiation oncologists (RO), medical physicists (MP) and radiotherapy technologists (RTT). The databases used for computation of the present gap and additional requirements are (a) Global Cancer Incidence, Mortality and Prevalence (GLOBOCAN) for cancer incidence (b) the Directory of Radiotherapy Centres (DIRAC) of the IAEA for existing TRT units (c) human resources from the recent ESTRO "Health Economics in Radiation Oncology" (HERO) survey and (d) radiotherapy utilization (RTU) rates for each tumour site, published by the Ingham Institute for Applied Medical Research (IIAMR). In 2015, 30,999 of 45,903 cancer patients would have required radiotherapy. By 2020, this will have increased to 34,041 of 50,427 cancer patients. Switzerland presently has an adequate number of TRTs, but a deficit of 57 ROs, 14 MPs and 36 RTTs. By 2020, an additional 7 TRTs, 72 ROs, 22 MPs and 66 RTTs will be required. In addition, a realistic dynamic model for calculation of staff requirements due to anticipated changes in future radiotherapy practices has been proposed. This model could be tailor-made and individualized for any radiotherapy centre. A 9.8 % increase in radiotherapy requirements is expected for cancer patients over the next 5 years. The present study should assist the stakeholders and health planners in designing an appropriate strategy for meeting future radiotherapy needs for Switzerland.

  1. Insurance status and the variable management of children presenting to the emergency department with bronchiolitis.

    PubMed

    Damore, Dorothy; Mansbach, Jonathan M; Clark, Sunday; Ramundo, Maria; Camargo, Carlos A

    2010-10-01

    To determine if insurance type is associated with differences in the management of children presenting to the emergency department (ED) with bronchiolitis We analyzed data from a 30-center, prospective cohort study of children younger than 2 years with bronchiolitis presenting to the ED. Insurance status was defined as private, public, and no insurance. Of 1450 patients, 473 (33%) had private, 928 (64%) had public, and 49 (3%) had no insurance. Multivariable analysis found that children with public insurance were less likely to receive inhaled β-agonists (odds ratio [OR], 0.68; 95% confidence interval [CI], 0.50-0.92) or antibiotics (OR, 0.61; 95% CI, 0.42-0.89) the week before the ED visit. Children without insurance were less likely to have a primary care provider (OR, 0.15; 95% CI, 0.04-0.57) or receive laboratory testing in the ED (OR, 0.41; 95% CI, 0.19-0.88). The children's clinical presentation (eg, respiratory rate, oxygen saturation, and retractions) and ED treatments (eg, inhaled β-agonists, inhaled racemic epinephrine, systemic corticosteroids, and antibiotics) were similar. Likewise, hospital admission (multivariable OR 1.04; 95% CI, 0.45-2.42) was similar between insurance groups. We noted some pre-ED and ED management differences across insurance types for children presenting to the ED with bronchiolitis. Although these variations may reflect treatments with unproven benefits, all children regardless of insurance should receive similar care. Despite these management variations, there were no differences in medications delivered in the ED or admission rate.

  2. Radiotherapy infrastructure and human resources in Europe - present status and its implications for 2020.

    PubMed

    Datta, Niloy Ranjan; Samiei, Massoud; Bodis, Stephan

    2014-10-01

    Radiotherapy (RT) is required for nearly half of the newly diagnosed cancer patients. To optimise the quality and availability of RT, guidelines have been proposed by European Society for Radiotherapy and Oncology-QUAntification of Radiation Therapy Infrastructure And Staffing Needs (ESTRO-QUARTS) and the International Atomic Energy Agency (IAEA). This study evaluates the present status of RT capacity in Europe and the projected needs by 2020 as per these recommendations. Thirty-nine of the 53 countries, listed in Europe by the UN Statistical Division, whose cancer incidences, teletherapy and human resources were available in the Global Cancer Incidence, Mortality and Prevalence (GLOBOCAN), International Agency for Research on Cancer (IARC) and DIrectory of RAdiotherapy Centres (DIRAC) (IAEA) databases were evaluated. A total of 3550 teletherapy units (TRT), 7017 radiation oncologists (RO), 3685 medical physicists (MP) and 12,788 radiotherapy technologists (RTT) are presently available for the 3.44 million new cancer cases reported annually in these countries. The present infrastructure and human resources in RT are estimated to provide RT access to 74.3% of the patients requiring RT. The current capacity in TRT, RO, MP and RTT when compared with recommended guidelines has a deficit of 25.6%, 18.3%, 22.7% and 10.6%, respectively. Thus, to respond to requirements by 2020, the existing capacity needs to be augmented by an additional 1698 TRTs, 2429 ROs, 1563 MPs and 2956 RTTs. With an imminent rise in cancer incidence, multifaceted strategic planning at national and international levels within a coordinated comprehensive cancer control programme is highly desirable to give adequate access to all patients who require radiotherapy across Europe. Specific steps to address this issue at national and continental levels involving all major stakeholders are proposed.

  3. Medical thoracoscopy in China—the present status and the future

    PubMed Central

    Liu, Jing-Yuan; Xiong, Liang; Zhang, Min; Shuai, Shi-Yuan; Wei, Xiao-Shan; Ye, Lin-Lin

    2017-01-01

    Medical thoracoscopy (MT) refers to a minimally invasive procedure to inspect and perform a biopsy of the pleural space, as well as to perform therapeutic interventions, in a nonintubated patient under local anesthesia. This procedure provides the physician a window into the pleural space. Over the past two decades, MT has been developed very rapidly in China. We performed a review of the published data on MT in China, and estimated the present status, the challenges, and future perspectives of MT. From the data we conduct that MT is widely used well in China, not only in the diagnosis of exudative pleural effusions, but also in the management of pleural diseases, such as tuberculous pleural effusion, malignant pleural effusion and spontaneous pneumothorax. Meanwhile, it is noteworthy that few prospective clinical trials, lack of routine follow-up of MT are current domestic problems for diagnosis and management in pleural effusion. Consequently, more prospective, randomized clinical trials are needed to assess the diagnostic value and treatment superiorities of MT compared with traditional methods or other subjects in China in the future. PMID:28275489

  4. Present status and future trends in the development of thermoluminescent materials.

    PubMed

    Azorin Nieto, Juan

    2016-11-01

    There is a continuous growing interest in developing materials for TL radiation dosimetry, especially in the fields of medical, environmental and personal applications. Although several phosphors are being used in these fields today, many efforts are being made in order to develop new TL materials, having better tissue equivalence, and increased sensitivity to gamma radiation, high energy photons, electrons, neutrons and heavy ions. Different preparation methods and properties of several TL materials have been studied so far and it is found that many of these materials constitute a class of TL phosphors with good performances, especially when they are doped with suitable activators. Most widely used and extensively studied materials for TL dosimetry (TLD) are fluorides, sulfates, borates and sulfides of alkali and alkaline earth elements. Besides these, have been developed other phosphors based on metal oxides and mixtures of metal oxides, halo sulfates and different kinds of glasses and perovskites. In this paper, a review of the status and future trends in the development of TL materials is presented. Copyright © 2015 Elsevier Ltd. All rights reserved.

  5. The present status of xeroderma pigmentosum in Japan and a tentative severity classification scale.

    PubMed

    Nakano, Eiji; Masaki, Taro; Kanda, Fumio; Ono, Ryusuke; Takeuchi, Seiji; Moriwaki, Shinichi; Nishigori, Chikako

    2016-08-01

    Xeroderma pigmentosum (XP) is a rare autosomal recessive hereditary disease. Patients with XP have severe hypersensitivity to sunlight, resulting in skin cancers, and some patients have neurological symptoms. In Japan, XP complementation group A (XP-A) is the most common form, and it is associated with severe neurological symptoms. We performed a nationwide survey on XP to determine the present status of XP in Japan. The distribution of complementation groups in Japan was considerably different from that in other countries, but there was a higher frequency in group A and the variant type, which is similar to previous reports in Japan. Basal cell carcinoma was the most frequent skin cancer that patients with XP developed, followed by squamous cell carcinoma and malignant melanoma. The frequency of these skin cancers in patients with XP-A has decreased, and these skin cancers have been occurring in much older people than those previously observed. Diagnosing XP in patients at younger ages seems to encourage patients and their parents to use sun protection, which helps prevent skin cancer. We also created a tentative scale for classifying the severity of XP, and we evaluated the neurological symptoms of XP-A using this severity scale. Our classification correlated well with patients' age, suggesting that it may be useful and feasible in clinical practice to assess the progression of symptoms of each patient with XP and evaluate the effects of treatment in the future.

  6. [History and present status of butterfly monitoring in Europe and related development strategies for China].

    PubMed

    Fang, Li-Jun; Xu, Hai-Gen; Guan, Jian-Ling

    2013-09-01

    Butterfly is an important bio-indicator for biodiversity monitoring and ecological environment assessment. In Europe, the species composition, population dynamics, and distribution pattern of butterfly have been monitored for decades, and many long-term monitoring schemes with international effects have been implemented. These schemes are aimed to assess the regional and national variation trends of butterfly species abundance, and to analyze the relationships of this species abundance with habitat, climate change, and other environmental factors, providing basic data for researching, protecting, and utilizing butterfly resources and predicting environmental changes, and playing important roles in the division of butterfly' s threatened level, the formulation of related protection measures, and the protection and management of ecological environment. This paper reviewed the history and present status of butterfly monitoring in Europe, with the focus on the well-known long-term monitoring programs, e. g. , the UK Butterfly Monitoring Scheme and the Germany and European Union Butterfly Monitoring Scheme. Some specific proposals for conducting butterflies monitoring in China were suggested.

  7. Present status and new perspectives in laser welding of vascular tissues.

    PubMed

    Esposito, G; Rossi, F; Matteini, P; Puca, A; Albanese, A; Sabatino, G; Maira, G; Pini, R

    2011-01-01

    The laser welding of biological tissues is a particular use of lasers in surgery. The technique has been proposed since the 1970s for surgical applications, such as repairing blood vessels, nerves, tendons, bronchial fistulae, skin and ocular tissues. In vascular surgery, two procedures have been tested and optimized in animal models, both ex vivo and in vivo, in order to design different approaches for blood vessels anastomoses and for the repair of vascular lesions: the laser-assisted vascular anastomosis (LAVA) and the laser-assisted vessel repair (LAVR). Sealing tissues by laser may overcome the problems related to the use of conventional closuring methods that are generally associated with various degrees of vascular wall damage that can ultimately predispose to vessel thrombosis and occlusion. In fact, the use of a laser welding technique provides several advantages such as simplification of the surgical procedure, reduction of the operative time, suppression of bleeding, and may guarantee an optimal healing process of vascular structures, very similar to restitutio ad integrum. Despite the numerous preclinical studies performed by several research groups, the clinical applications of laser-assisted anastomosis or vessel repair are still far off. Substantial breakthrough in the laser welding of biological tissues may come from the advent of nanotechnologies. Herein we describe the present status and the future perspectives in laser welding of vascular structures.

  8. Present Status of Venus Climate Orbiter (Planet-C) development in Japan

    NASA Astrophysics Data System (ADS)

    Nakamura, Masato

    Venus Climate Orbiter (VCO) is the first Japanese Venus orbiter to be launched in 2010. It aims at studying the atmospheric dynamics of Venus. We keep the time schedule of VCO development at ISAS/JAXA with the collaboration with university researchers and industrial engineers. In this talk we will report the present status of the VCO development in 2008. We have finished the Proto-Model integration test of major components of VCO in December 2007. Mechanical engineering model of the spacecraft has been built and its evaluation was done at Tsukuba Space Center and Sagamihara campus. The vibration levels are mostly consistent with the results from the mathematical modeling. It has been converted to the Thermal test model and is under evaluation in the thermal vacuum chamber at Sagamihara. In March 2008, we had the CDR for the phase-up (to Phase D). After the CDR, flight model of VCO has been built by NEC Corp. and ISAS/JAXA. It will be finalized by 2009 and the final integration test will be done during whole 2009.

  9. Nonconvulsive seizures in patients presenting with altered mental status: an evidence-based review.

    PubMed

    Zehtabchi, Shahriar; Abdel Baki, Samah G; Malhotra, Shweta; Grant, Arthur C

    2011-10-01

    Definitive diagnosis of nonconvulsive seizures (NCS) can be made only by electroencephalography, and delay in diagnosis can increase morbidity, resource utilization, and length of hospitalization. We performed an evidence-based literature review to estimate the prevalence of NCS in patients with altered mental status (AMS) of unknown cause. PUBMED, EMBASE, the Cochrane Library, and other resources were searched for studies that included AMS and seizure as topics. The resulting 276 articles were screened for predetermined inclusion and exclusion criteria, leaving 5 studies enrolling 478 patients for review. The prevalence of NCS in patients with AMS ranged from 8 to 30% (overall prevalence of 21.5%, 95% CI: 18-25%), suggesting that the prevalence of NCS is sufficiently high to consider routine use of urgent electroencephalography in such patients. However, methodological weaknesses limit the generalizability of the results. A large, prospective study enrolling and screening for NCS in all patients who present with acute AMS is needed. Copyright © 2011 Elsevier Inc. All rights reserved.

  10. Status of the Fermilab Muon (g-2) Experiment

    SciTech Connect

    Roberts, B.Lee

    2010-01-01

    The New Muon (g-2) Collaboration at Fermilab has proposed to measure the anomalous magnetic moment of the muon, a{sub {mu}}, a factor of four better than was done in E821 at the Brookhaven AGS, which obtained a{sub {mu}} = [116592089(63)] x 10{sup -11} {+-} 0.54 ppm. The last digit of a{sub {mu}} is changed from the published value owing to a new value of the ratio of the muon-to-proton magnetic moment that has become available. At present there appears to be a difference between the Standard-Model value and the measured value, at the {approx}= 3 standard deviation level when electron-positron annihilation data are used to determine the lowest-order hadronic piece of the Standard Model contribution. The improved experiment, along with further advances in the determination of the hadronic contribution, should clarify this difference. Because of its ability to constrain the interpretation of discoveries made at the LHC, the improved measurement will be of significant value, whatever discoveries may come from the LHC.

  11. Measurements and Status at the CERES Ocean Validation Experiment (COVE)

    NASA Astrophysics Data System (ADS)

    Fabbri, B. E.; Denn, F. M.; Schuster, G. L.; Arduini, R. F.; Madigan, J. J.; Rutan, D. A.

    2014-12-01

    The Clouds and the Earth's Radiant Energy System (CERES) is a suite of instruments flying on several earth-observing satellites that provides data products of radiant energy from the top of the atmosphere to the Earth's surface. The CERES Ocean Validation Experiment (COVE) was established in 1999 as an ocean surface validation site for CERES and other satellite instruments. COVE is located at Chesapeake Light Station, approximately 25 kilometers east of Virginia (coordinates: 36.90N, 75.71W). COVE measurements include downwelling and upwelling radiant flux at visible and infrared wavelengths, basic meteorological parameters, aerosol optical depth, black carbon, total column water vapor, cloud heights, and more. COVE is part of several networks including the Baseline Surface Radiation Network (BSRN), Aerosol Robotic Network (AERONET), Micro-Pulse Lidar Network (MPLNET) and Global Positioning System Meteorology (GPS-MET). A table will be displayed that outlines the current instrumentation and measurements being collected at COVE. Select data results will be presented, including CERES satellite derived data versus COVE surface observed measurements. Also, climatologies such as black carbon from an Aethalometer will be disclosed. In October 2012, the Department of Energy (D.O.E.) purchased Chesapeake Light with the goal of producing a base station for vertically defined wind profiles. While this project is still in the planning phase, the D.O.E. has allowed our research to continue in its current state.

  12. Status of the RBCC Direct-Connect Mixer Combustor Experiment

    NASA Technical Reports Server (NTRS)

    Walker, James F.; Kamhawi, Hani; Krivanek, Thomas M.; Thomas, Scott R.; Smith, Timothy D.

    2002-01-01

    The NASA Glenn Research Center is developing hydrogen based combined cycle propulsion technology for a single-stage-to-orbit launch vehicle application under a project called GTX. Rocket Based Combined Cycle (RBCC) propulsion systems incorporate one or more rocket engines into an airbreathing flow path to increase specific impulse as compared to an all rocket-powered vehicle. In support of this effort, an RBCC direct-connect test capability was established at the Engine Components Research Laboratory to investigate low speed, ejector ramjet, and initial ramjet operations and performance. The facility and test article enables the evaluation of two candidate low speed operating schemes; the simultaneous mixing and combustion (SMC) and independent ramjet stream (IRS). The SMC operating scheme is based on the fuel rich operations of the rocket where performance depends upon mixing between the rocket plume and airstream. In contrast, the IRS scheme fuels the airstream separately and uses the rocket plume to ignite the fuel-air mixture. This paper describes the test hardware and facility upgrades installed to support the RBCC tests. It also defines and discusses low speed technical challenges being addressed by the experiments. Finally, preliminary test results, including rocket risk mitigating tests, unfueled airflow tests, and the integrated system hot fire test will be presented.

  13. Present Status of Geophysics Departments at Universities in Turkey from Perspectives of their Students

    NASA Astrophysics Data System (ADS)

    Karabulut, Savas; Baris Aygordu, Ozan; Benli, Aral

    2015-04-01

    This survey was conducted in order to make the students who are having geophysical engineering education in Turkey evaluate their departments from their own perspectives.By doing this we aimed to make a contribution to the geophysical engineering education and we tried to find out if there were any deficiencies in that matter and also the possible solutions.In this respect aproximately 500 undergraduates from 11 different state universities were asked 25 questions regarding both their socio-economic status and their ideas on their future professions.In the survey the students were asked to state their high-school graduation;whether it is an Anatolian High-school,Vocational high-school or college and if geophysical engineering education was their first choice at the university entrance exams.The students' foreign language status-if there were any- except their mother tongue were asked and also their opinions on geophysical education at their universities.Besides these the students were asked in which fields they study in their department; Seismology, Geophysics or Applied Geophysics and if they found the geophysical equipments adequate in their departments and also the programming languages-like data processing laboratories.In the survey we tried to find out if the students were encouraged to participate in the meetings and congresses in their field by their instructers and if they found the theoretical training adequate besides the practical one.Above all the students answered questions if they had any worries about future job opportunities ; what their goals were after they graduate and if they could easily get access to any kind of Turkish sources in their field and if they were reluctant to work at any jobs part-time or full-time during university.The results of the survey were presented to the Union of Turkish Engineers and Architects and also to the related heads of departments.The most striking parts of this survey were that the students were not edequate

  14. Overcoming barriers to Baby-Friendly status: one hospital's experience.

    PubMed

    McKeever, Joyce; Fleur, Rose St

    2012-08-01

    The journey toward Baby-Friendly status at Jersey Shore University Medical Center in Neptune, NJ began with a desire to improve overall breastfeeding rates at the hospital. Although evidence showed that hospitals that incorporated some or all of the Ten Steps to Successful Breastfeeding had improved breastfeeding rates, it was difficult to overcome barriers that prevented the hospital physicians and nursing staff from seeing the value in adopting this quality initiative. Long-standing practices combined with misinformation compounded the problem. That situation changed when several factors nationally and statewide came together to create a prime environment for implementation of the Baby-Friendly Hospital Initiative. This article will discuss the barriers that one hospital encountered and the strategies used to overcome these common barriers to achieving Baby-Friendly status. This hospital is not yet designated as Baby-Friendly but is awaiting the outcome of a site visit in 2012.

  15. Present status of multi-column cell exposure system for mask writing

    NASA Astrophysics Data System (ADS)

    Yasuda, Hiroshi; Yamada, Akio; Yamabe, Masaki

    2009-04-01

    In the Mask D2I project at ASET, we are developing a novel electron beam exposure system using the concepts of MCC (multi column cell), CP (character projection), and VSB (variable shaped beam) to improve the throughput of electron beam exposure systems. In this paper we present the outline of a proof-of-concept system of MCC, results of the evaluation of fundamental functions of the system, and early writing results including multi column stitching. In the evaluation of fundamental functions of the system, we found that there is no interference on beam positions among the CCs, and that the beam position stability is quite good. In our early writing experiments, we had presented the first writing result of MCC and the first stitching result of a multi column system ever reported.

  16. Uncooled Terahertz real-time imaging 2D arrays developed at LETI: present status and perspectives

    NASA Astrophysics Data System (ADS)

    Simoens, François; Meilhan, Jérôme; Dussopt, Laurent; Nicolas, Jean-Alain; Monnier, Nicolas; Sicard, Gilles; Siligaris, Alexandre; Hiberty, Bruno

    2017-05-01

    As for other imaging sensor markets, whatever is the technology, the commercial spread of terahertz (THz) cameras has to fulfil simultaneously the criteria of high sensitivity and low cost and SWAP (size, weight and power). Monolithic silicon-based 2D sensors integrated in uncooled THz real-time cameras are good candidates to meet these requirements. Over the past decade, LETI has been studying and developing such arrays with two complimentary technological approaches, i.e. antenna-coupled silicon bolometers and CMOS Field Effect Transistors (FET), both being compatible to standard silicon microelectronics processes. LETI has leveraged its know-how in thermal infrared bolometer sensors in developing a proprietary architecture for THz sensing. High technological maturity has been achieved as illustrated by the demonstration of fast scanning of large field of view and the recent birth of a commercial camera. In the FET-based THz field, recent works have been focused on innovative CMOS read-out-integrated circuit designs. The studied architectures take advantage of the large pixel pitch to enhance the flexibility and the sensitivity: an embedded in-pixel configurable signal processing chain dramatically reduces the noise. Video sequences at 100 frames per second using our 31x31 pixels 2D Focal Plane Arrays (FPA) have been achieved. The authors describe the present status of these developments and perspectives of performance evolutions are discussed. Several experimental imaging tests are also presented in order to illustrate the capabilities of these arrays to address industrial applications such as non-destructive testing (NDT), security or quality control of food.

  17. Historical evolution and present status of family medicine in sri lanka.

    PubMed

    Ramanayake, R P J C

    2013-04-01

    Sri Lankan health system consists of Allopathic, Ayurvedic, Unani, and several other systems of medicine and allopathic medicine is catering to the majority of the health needs of the people. As in many other countries, Sri Lankan health system consists of both the state and the private sector General practitioners, MOs in OPDs of hospitals and MOs of central dispensaries, provide primary medical care in Sri Lanka. Most of the general practices are solo practices. One does not need postgraduate qualification or training in general practice to start a general practice. There is no registered population for any particular health care institution in the state sector or in the private sector and there is no strict referral procedure from primary care to secondary or tertiary care. Family doctors have been practicing in Sri Lanka for well over 150 years. The first national organization of general practitioners was Independent Medical Practitioner (IMPA)'s organization which was founded in 1929 and the College of General Practitioners of Sri Lanka was founded in 1974. College conducts its own Membership Course and Examination (MCGP) since 1999. Family Medicine was introduced to undergraduate curriculum in Sri Lanka in early 1980s and now almost all the medical faculties in the country have included Family Medicine in their curricula. In 1979, General Practice/Family Medicine was recognized as a specialty in Sri Lanka by the postgraduate institute of Medicine. Diploma in Family Medicine (DFM) and MD Family Medicine are the pathways for postgraduate training in Sri Lanka. At present 50 to 60 doctors enroll for DFM every year and the country has about 20 specialists (with MD) in Family Medicine. The author's vision for the future is that all the primary care doctors to have a postgraduate qualification in Family Medicine either DFM, MD, or MCGP which is a far cry from the present status.

  18. The present status of medical physics education and training in Europe: an EFOMP survey.

    PubMed

    Eudaldo, T; Olsen, K

    2008-03-01

    The aim of this work is to present the results of an EFOMP's survey on the status of Education and Training of Medical Physics in Europe. This survey has been undertaken by EFOMP in 2005, to update the document "Policy Statement No. 1", which represents the starting point of the EFOMP recommendations on Education and Training in Medical Physics. Ultimate results have been collected at the end of 2006. To perform the survey, a questionnaire was sent to 34 National Member Organisations (NMOs) for Medical Physics, to collect information on the present state of education and training in each European country. Twenty-five countries participated in the enquiry and responded to it. The most outstanding results are as follows: In all countries, the basic requirement to enter the Medical Physics education is a university degree. The length of this university education ranges from 2 to 5 years. Concerning the Post-graduate education in Medical Physics: A nationally approved educational programme is in operation in 16 of the 25 countries. Postgraduate education takes place essentially within 3 different approaches and the total length of Medical Physics education and training ranges from 2 1/2 years to 9 years. In 14 countries, it is mandatory to hold a diploma or license to work as a Medical Physicist. It allows working in all areas of competence (the most mentioned were Radiotherapy, Nuclear Medicine, Diagnostic Radiology and Radiation Protection) in 14 countries, whereas in 4 countries it allows to work only in 1 or 2 areas. Seventeen countries have a register for Medical Physicists. A formal CPD (Continuing Professional Development) programme is in operation in 13 countries.

  19. Fabrication of solar beam steering electrowetting devices—present status and future prospects

    NASA Astrophysics Data System (ADS)

    Khan, I.; Castelletto, S.; Rosengarten, G.

    2017-10-01

    Many different technologies are used to track the movement of the sun to both enable concentration of its energy and maximize the yearly energy capture. Their present main limitations are the cost, size, visual impact and wind loading, particularly for applications involving mounting to a building. A parabolic concentrator, for example, along with its steering equipment is heavy and bulky, and is not suitable for rooftop applications. Instead, thin and flat solar concentration devices are required for hassle-free rooftop applications. The use of electrowetting-controlled liquid lenses has emerged as a novel approach for solar tracking and concentration. By steering sunlight using thin electrowetting cell arrays, bulky mechanical equipment is not required. The basic concept of this technology is to change the shape of a liquid interface that is formed by two immiscible fluids of different refractive indices, by simply applying an electric field. An important challenge in electrowetting beam steering devices is the optimization of the design and fabrication process for each of their main constituent components, to maximize optical efficiency. In this paper, we report on the state-of-the-art fabrication methods for electrowetting devices for solar beam steering. We have reviewed the present status of different components types and related fabrication methods, and how they affect the efficiency and performance of such devices. The work identifies future prospects in using electrowetting beam steering devices for solar energy applications. This paper will help researchers and developers in the field to determine the components and fabrication process that affect the development of efficient beam steering electrowetting devices.

  20. The variable pathologic presentations of medullary and micro-medullary thyroid carcinoma: an institutional experience.

    PubMed

    Samulski, T Danielle; Livolsi, Virginia A; Montone, Kathleen; Baloch, Zubair

    2014-03-01

    Medullary thyroid carcinoma (MTC) is a rare tumor; its pathologic diagnosis can be difficult due to variability in its clinical presentation, size, morphology, and follow-up. We report our institutional experience with 45 cases of MTC diagnosed at University of Pennsylvania Medical Center between 2000 and 2007. The collected data points included patient's age, sex, family history, tumor size, method of diagnosis, calcitonin and CEA levels, presence of concomitant follicular derived thyroid carcinoma (FDTC), lymph node (LN) status, and clinical follow-up. The cohort included 17 males and 28 females (average age 53 years); 6 had a history of multiple endocrine neoplasia II (MENII). Pre-operative FNA was performed in 33/45 cases (33%); 23/33 were diagnosed as MTC or suspicious for MTC. Of 45 cases 20 were micro-MTC; 15 occurred with other thyroid malignancies. LN metastases were present at primary resection in 18/45 cases. Calcitonin levels rose or remained elevated postoperatively in 4 cases; of these, 2 had regional LN recurrence and 1 developed distant metastases and subsequently died of disease. MTC is a heterogeneous disease. Sporadic micro-MTC carcinoma is an indolent tumor and can occur with other malignant tumors of the thyroid gland. Copyright © 2013 Elsevier GmbH. All rights reserved.

  1. A Critical Appraisal of Kuppuswamy's Socioeconomic Status Scale in the Present Scenario

    PubMed Central

    Sharma, Rahul; Saini, Narinder K.

    2014-01-01

    The socioeconomic status (SES) is widely recognized as one of the important factors affecting the health condition of an individual or a family. One of the scales widely used and quoted even today is the one developed by Kuppuswamy. The Kuppuswamy scale in its various forms has held steady over three decades now and is still widely used as a measure of socioeconomic status in the urban population. However, it is important to discuss the applicability in the changed modern scenario. PMID:24791227

  2. From undocumented to lawfully present: Do changes to legal status impact psychological wellbeing among latino immigrant young adults?

    PubMed

    Patler, Caitlin; Laster Pirtle, Whitney

    2017-03-09

    Exclusionary immigration policies, as a form of structural racism, have led to a sizeable undocumented population that is largely barred from access to resources in the United States. Existing research suggests that undocumented immigration status detrimentally impacts mobility, yet few studies have tested the impacts of legal status on psychological wellbeing. Most importantly, we know little about how changes to legal status impact wellbeing. Announced in 2012, the Deferred Action for Childhood Arrivals (DACA) program allows eligible undocumented youth to apply for temporary lawful status. Drawing on cross-sectional survey data from 487 Latino immigrant young adults in California collected in 2014 and 2015, we analyze the predictors of three specialized outcomes related to immigrants' psychological wellbeing-distress, negative emotions, and deportation worry before and after a transition from undocumented to lawfully present status. Results show that retrospective reports of past psychological wellness, when all respondents were undocumented, are predicted primarily by socioeconomic status. However, reports of current psychological wellness are predicted by DACA status. Our results demonstrate, for the first time, the positive emotional consequences of transitioning out of undocumented status for immigrant young adults. Copyright © 2017 Elsevier Ltd. All rights reserved.

  3. Status of the TREK/E36 Experiment at J-PARC

    NASA Astrophysics Data System (ADS)

    Kohl, Michael; TREK Collaboration

    2014-09-01

    The TREK/E36 experiment is scheduled to run in 2015 at the J-PARC K1.1BR kaon beamline. The experiment uses a scintillating fiber target to stop a beam of up to 106 positive kaons per second. The kaon decay products are detected with a large-acceptance toroidal spectrometer capable of tracking charged particles with high resolution, combined with a photon calorimeter with large solid angle and redundant particle identification systems. With the aim to test lepton universality in the Ke 2 /Kμ 2 ratio with high precision, the experiment is highly sensitive to new physics beyond the Standard Model. A further goal of E36 is to search for light new particles with masses up to a few hundred MeV/c2 such as sterile neutrinos or U(1) bosons, which could be associated with dark matter or explain established muon-related anomalies. An overview of the planned experiment and the current project status will be presented. The TREK/E36 experiment is scheduled to run in 2015 at the J-PARC K1.1BR kaon beamline. The experiment uses a scintillating fiber target to stop a beam of up to 106 positive kaons per second. The kaon decay products are detected with a large-acceptance toroidal spectrometer capable of tracking charged particles with high resolution, combined with a photon calorimeter with large solid angle and redundant particle identification systems. With the aim to test lepton universality in the Ke 2 /Kμ 2 ratio with high precision, the experiment is highly sensitive to new physics beyond the Standard Model. A further goal of E36 is to search for light new particles with masses up to a few hundred MeV/c2 such as sterile neutrinos or U(1) bosons, which could be associated with dark matter or explain established muon-related anomalies. An overview of the planned experiment and the current project status will be presented. This project has been supported by DOE Early Career Award DE-SC0003884.

  4. Present status of amorphous In–Ga–Zn–O thin-film transistors

    PubMed Central

    Kamiya, Toshio; Nomura, Kenji; Hosono, Hideo

    2010-01-01

    The present status and recent research results on amorphous oxide semiconductors (AOSs) and their thin-film transistors (TFTs) are reviewed. AOSs represented by amorphous In–Ga–Zn–O (a-IGZO) are expected to be the channel material of TFTs in next-generation flat-panel displays because a-IGZO TFTs satisfy almost all the requirements for organic light-emitting-diode displays, large and fast liquid crystal and three-dimensional (3D) displays, which cannot be satisfied using conventional silicon and organic TFTs. The major insights of this review are summarized as follows. (i) Most device issues, such as uniformity, long-term stability against bias stress and TFT performance, are solved for a-IGZO TFTs. (ii) A sixth-generation (6G) process is demonstrated for 32″ and 37″ displays. (iii) An 8G sputtering apparatus and a sputtering target have been developed. (iv) The important effect of deep subgap states on illumination instability is revealed. (v) Illumination instability under negative bias has been intensively studied, and some mechanisms are proposed. (vi) Degradation mechanisms are classified into back-channel effects, the creation of traps at an interface and in the gate insulator, and the creation of donor states in annealed a-IGZO TFTs by the Joule heating; the creation of bulk defects should also be considered in the case of unannealed a-IGZO TFTs. (vii) Dense passivation layers improve the stability and photoresponse and are necessary for practical applications. (viii) Sufficient knowledge of electronic structures and electron transport in a-IGZO has been accumulated to construct device simulation models. PMID:27877346

  5. Present status of amorphous In-Ga-Zn-O thin-film transistors.

    PubMed

    Kamiya, Toshio; Nomura, Kenji; Hosono, Hideo

    2010-08-01

    The present status and recent research results on amorphous oxide semiconductors (AOSs) and their thin-film transistors (TFTs) are reviewed. AOSs represented by amorphous In-Ga-Zn-O (a-IGZO) are expected to be the channel material of TFTs in next-generation flat-panel displays because a-IGZO TFTs satisfy almost all the requirements for organic light-emitting-diode displays, large and fast liquid crystal and three-dimensional (3D) displays, which cannot be satisfied using conventional silicon and organic TFTs. The major insights of this review are summarized as follows. (i) Most device issues, such as uniformity, long-term stability against bias stress and TFT performance, are solved for a-IGZO TFTs. (ii) A sixth-generation (6G) process is demonstrated for 32″ and 37″ displays. (iii) An 8G sputtering apparatus and a sputtering target have been developed. (iv) The important effect of deep subgap states on illumination instability is revealed. (v) Illumination instability under negative bias has been intensively studied, and some mechanisms are proposed. (vi) Degradation mechanisms are classified into back-channel effects, the creation of traps at an interface and in the gate insulator, and the creation of donor states in annealed a-IGZO TFTs by the Joule heating; the creation of bulk defects should also be considered in the case of unannealed a-IGZO TFTs. (vii) Dense passivation layers improve the stability and photoresponse and are necessary for practical applications. (viii) Sufficient knowledge of electronic structures and electron transport in a-IGZO has been accumulated to construct device simulation models.

  6. TOPICAL REVIEW: Present status of amorphous In-Ga-Zn-O thin-film transistors

    NASA Astrophysics Data System (ADS)

    Kamiya, Toshio; Nomura, Kenji; Hosono, Hideo

    2010-08-01

    The present status and recent research results on amorphous oxide semiconductors (AOSs) and their thin-film transistors (TFTs) are reviewed. AOSs represented by amorphous In-Ga-Zn-O (a-IGZO) are expected to be the channel material of TFTs in next-generation flat-panel displays because a-IGZO TFTs satisfy almost all the requirements for organic light-emitting-diode displays, large and fast liquid crystal and three-dimensional (3D) displays, which cannot be satisfied using conventional silicon and organic TFTs. The major insights of this review are summarized as follows. (i) Most device issues, such as uniformity, long-term stability against bias stress and TFT performance, are solved for a-IGZO TFTs. (ii) A sixth-generation (6G) process is demonstrated for 32'' and 37'' displays. (iii) An 8G sputtering apparatus and a sputtering target have been developed. (iv) The important effect of deep subgap states on illumination instability is revealed. (v) Illumination instability under negative bias has been intensively studied, and some mechanisms are proposed. (vi) Degradation mechanisms are classified into back-channel effects, the creation of traps at an interface and in the gate insulator, and the creation of donor states in annealed a-IGZO TFTs by the Joule heating; the creation of bulk defects should also be considered in the case of unannealed a-IGZO TFTs. (vii) Dense passivation layers improve the stability and photoresponse and are necessary for practical applications. (viii) Sufficient knowledge of electronic structures and electron transport in a-IGZO has been accumulated to construct device simulation models.

  7. Supervised Occupational Experience Programs: History, Philosophy, Current Status, and Future Implications.

    ERIC Educational Resources Information Center

    Boone, Harry N.; And Others

    1987-01-01

    The authors examine the evolution of supervised occupational experience programs in agricultural education, provide an overview of their current status, and suggest the direction they will take in the future. Information was collected from a review of the literature. (CH)

  8. Gravitation theory - Empirical status from solar system experiments.

    NASA Technical Reports Server (NTRS)

    Nordtvedt, K. L., Jr.

    1972-01-01

    Review of historical and recent experiments which speak in favor of a post-Newtonian relativistic gravitational theory. The topics include the foundational experiments, metric theories of gravity, experiments designed to differentiate among the metric theories, and tests of Machian concepts of gravity. It is shown that the metric field for any metric theory can be specified by a series of potential terms with several parameters. It is pointed out that empirical results available up to date yield values of the parameters which are consistent with the prediction of Einstein's general relativity.

  9. Gravitation theory - Empirical status from solar system experiments.

    NASA Technical Reports Server (NTRS)

    Nordtvedt, K. L., Jr.

    1972-01-01

    Review of historical and recent experiments which speak in favor of a post-Newtonian relativistic gravitational theory. The topics include the foundational experiments, metric theories of gravity, experiments designed to differentiate among the metric theories, and tests of Machian concepts of gravity. It is shown that the metric field for any metric theory can be specified by a series of potential terms with several parameters. It is pointed out that empirical results available up to date yield values of the parameters which are consistent with the prediction of Einstein's general relativity.

  10. Status of experiments at LLNL on high-power x-band microwave generators

    SciTech Connect

    Houck, T.L.; Westenskow, G.A.

    1994-01-01

    The Microwave Source Facility at the Lawrence Livermore National Laboratory (LLNL) is studying the application of induction accelerator technology to high-power microwave generators suitable for linear collider power sources. We report on the results of two experiments, both using the Choppertron`s 11.4 GHz modulator and a 5-MeV, 1-kA induction beam. The first experimental configuration has a single travelingwave output structure designed to Produce in excess of 300 MW in a single fundamental waveguide. This output structure consists of 12 individual cells, the first two incorporating de-Q-ing circuits to dampen higher order remnant modes. The second experiment studies the feasibility of enhancing beam to microwave power conversion by accelerating a modulated beam with induction cells. Referred to as the ``Reacceleration Experiments this experiment consists of three traveling-wave output structures designed to produce about 125 MW per output and two induction cells located between the outputs. Status of current and planned experiments are presented.

  11. USA/FBR program status FFTF operations startup experience

    SciTech Connect

    Moffitt, W.C.; Izatt, R.D.

    1981-06-01

    This paper gives highlights of the major Operations evaluations and operational results of the startup acceptance testing program and initiation of normal operating cycles for experiment irradiation in the FFTF. 33 figures. (DLC)

  12. Goals and Status of the NASA Juncture Flow Experiment

    NASA Technical Reports Server (NTRS)

    Rumsey, Christopher L.; Morrison, Joseph H.

    2016-01-01

    The NASA Juncture Flow experiment is a new effort whose focus is attaining validation data in the juncture region of a wing-body configuration. The experiment is designed specifically for the purpose of CFD validation. Current turbulence models routinely employed by Reynolds-averaged Navier-Stokes CFD are inconsistent in their prediction of corner flow separation in aircraft juncture regions, so experimental data in the near-wall region of such a configuration will be useful both for assessment as well as for turbulence model improvement. This paper summarizes the Juncture Flow effort to date, including preliminary risk-reduction experiments already conducted and planned future experiments. The requirements and challenges associated with conducting a quality validation test are discussed.

  13. Status of the ALICE experiment at the LHC

    SciTech Connect

    Herrera Corral, G.

    2008-11-13

    The Large Hadron Collider will provide soon, beams of protons and collisions at high energy to the experiments. ALICE stands for A Large Ion Collider Experiment. It is one of the experiments at the Large Hadron Collider. ALICE will be dedicated to the study of heavy ion collisions. The main goal of ALICE is the observation of the transition of ordinary matter into a plasma of quarks and gluons. ALICE consists of 16 systems of detection. Two of them were designed and constructed in Mexico: i) The V0A detector, located at 3.2 mts. from the interaction point and ii) The cosmic ray detector on the top of the magnet. After a quick review of the LHC and the ALICE experiment we will focus on the description of these systems.

  14. Status of FNAL SciBooNE experiment

    SciTech Connect

    Nakajima, Yasuhiro; /Kyoto U.

    2007-12-01

    SciBooNE is a new experiment at FNAL which will make precision neutrino-nucleus cross section measurements in the one GeV region. These measurements are essential for the future neutrino oscillation experiments. We started data taking in the antineutrino mode on June 8, 2007, and collected 5.19 x 10{sup 19} protons on target (POT) before the accelerator shutdown in August. The first data from SciBooNE are reported in this article.

  15. TIDBIT: portable diagnostics of multiplexed nutrition deficiencies: iron, vitamin A and inflammation status (Conference Presentation)

    NASA Astrophysics Data System (ADS)

    Lu, Zhengda; Erickson, David

    2017-03-01

    Vitamin A and iron deficiency are common malnutrition affecting billions of people worldwide. However, in infrastructure limited settings, access to blood vitamin A and iron status test is limited because of the complexity and cost of traditional diagnostic methods. Direct measurements of vitamin A and iron level is not easy to perform, and it is necessary to measure approximate marker for obtaining vitamin A and iron deficiency status. Measurement of inflammatory marker is also necessary because the vitamin A and iron level are altered by inflammation status. Here we introduced a multiplex rapid point-of-care (POC) diagnostic devices that simultaneously characterize three markers relevant to vitamin A, iron and inflammation status: retinol binding protein 4, ferritin and C-reactive protein with lateral flow immunoassay test strips. Level of retinol binding protein 4, ferritin and C-reactive protein are indicated by excitation intensity of fluorescence tags with three different colors. The test can be done within 15 minutes and a complete sample-answer quantitative results of vitamin A, iron and inflammation status level can be obtained with assists of a smartphone and an external device. We also demonstrated the device is able to perform colorimetric analysis on single test area. which gives the device potential to perform more tests simultaneously at the same time.

  16. Planetary Observations in the Soft X-ray band; Present status and Future CMOS based technology

    NASA Astrophysics Data System (ADS)

    Kenter, A.; Kraft, R.; Murray, S.; Smith, R.; George, F.; Branduardi-Raymont, G.; Roediger, E.; Forman, W.; Elvis, M.

    2013-12-01

    ultra-relativistic electrons, indicative of strong magnetohydrodynamic shocks. In this poster we outline some of the planetary investigations that could be made with this technology, and present the current status of our instrumentation development. We also compare the capabilities of our X-ray imaging spectrometer on a dedicated mission to Jupiter with the results obtained with Chandra. Our instrument, on a dedicated mission to Jupiter, could obtain more data on the Jovian auroras and the Io plasma torus in five minutes than we could with weeks of continuous Chandra observation.

  17. SNS Ring Operational Experience and Power Ramp Up Status

    SciTech Connect

    Plum, Michael A

    2009-01-01

    The SNS Ring has now been operating for about 3.5 years, and our march continues to increase the beam power to the full design value of 1.4 MW. The Ring is a loss-limited machine, and in general the radioactivation levels are good, but there are some unanticipated hot spots that we are working to improve. High intensity collective effects such as space-charge and beam instability have had minimal impact on beam operations to date. The cross plane coupling issue in the ring to target beam transport line has been solved. We will also discuss the status of equipment upgrades in the high-energy beam transport beam line, the injection-dump beam transport line, the ring, and the ring-to-target beam transport line.

  18. Status and future of the tritium plasma experiment

    SciTech Connect

    Causey, R.A.; Buchenauer, D.; Taylor, D.; Harbin, W.; Anderl, B.

    1995-10-01

    The Tritium Plasma Experiment (TPE) has been recently upgraded and relocated at the Tritium System Test Assembly (TSTA) at Los Alamos National Laboratory. The first tritium plasma in the upgraded system was achieved on May 11, 1995. TPE is a unique facility devoted to experiments on the migration and retention of tritium in fusion reactor materials. This facility is now capable of delivering 100 to 200 eV tritons at a level of 1 A/cm{sup 2} to a 5 mm diameter sample, similar to that expected for the divertor of the International Thermonuclear Experimental Reactor (ITER). An aggressive research plan has been established, and experiments are expected to begin in June of 1995. 4 figs.

  19. Status and prospects of the China Dark Matter Experiment

    NASA Astrophysics Data System (ADS)

    Liu, Shukui; Yue, Qian

    2015-05-01

    The China Dark Matter Experiment (CDEX) pursues direct searches of light Weakly Interacting Massive Particles (WIMPs) at the China Jinping Underground Laboratory (CJPL), which is the deepest operating laboratory for astroparticle research in the world. Results from a prototype CDEX-0 20 g germanium detector array and CDEX-1 994 g pPCGe(p-type Point Contact Germanium) detector are reported. The new result from CDEX-1 pPCGe excludes the CoGeNT-2013 allowed region with an identical detector technique. CDEX-10 with a PCGearray of 10 kg target mass range enclosed in a liquid argon anti-Compton detector is being constructed and tested. The CDEX program evolves into the targets of "CDEX-1T Experiment". The CDEX-1T experiment will be located in CJPL-II which is under construction and will be finished by the end of 2016.

  20. Status of selected neutrinoless ββ-decay experiments

    NASA Astrophysics Data System (ADS)

    Avignone, F. T.; Brodzinski, R. L.; Reeves, J. H.; Miley, H. S.

    1988-11-01

    A brief update is given on a number of ongoing Oν ββ-decay experiments. Progress is reported in background reduction, limits are given on the various modes of decay, and projections of potential sensitivity are made in some cases. In particular, a new result from the PNL-USC Oν ββ decay experiment yields a half-life of (3.2+2.2-1.2)×1021 y (1σ) for decay with the emission of a majoron. While a positive result is still observed, it is now statistically less significant. A new recently deep-mined Ge to decrease background cosmogenic radioactivity.

  1. Status of NuMI experiments: MINOS+ and NO$\

    SciTech Connect

    Coelho, João A.B.

    2015-03-01

    The NuMI beam at Fermilab has been upgraded and is now capable of producing a 700 kW neutrino beam. Two major long-baseline neutrino experiments, MINOS+ and NOνA, have started data collection in the new NuMI configuration. This paper describes the latest developments of MINOS+ and NOνA. MINOS+ constitutes a new phase of the MINOS experiment and will provide improved sensitivity to new physics phenomena with a higher energy beam. NOνA will take advantage of its off-axis position to deliver precise measurements of

  2. Teachers' Perceptions of the Present and Optimum Status of the In-Service EFL Teacher Preparation Programs

    ERIC Educational Resources Information Center

    Birjandi, Parviz; Hesari, Ali Derakhshan

    2010-01-01

    The present study sought the different perceptions of Iranian EFL instructors and teachers on the present and optimum status of in-service programs. A 26-item questionnaire completed by 90 participants, thirty of whom were instructors and the rest were teachers, revealed that instructors and teachers had different conceptions about these…

  3. Primary Drug-Resistant Tuberculosis in Hanoi, Viet Nam: Present Status and Risk Factors

    PubMed Central

    Hang, Nguyen Thi Le; Maeda, Shinji; Lien, Luu Thi; Thuong, Pham Huu; Hung, Nguyen Van; Thuy, Tran Bich; Nanri, Akiko; Mizoue, Tetsuya; Hoang, Nguyen Phuong; Cuong, Vu Cao; Ngoc, Khieu Thi Thuy; Sakurada, Shinsaku; Endo, Hiroyoshi; Keicho, Naoto

    2013-01-01

    Introduction Resistance of Mycobacterium tuberculosis (MTB) to anti-tuberculosis (TB) drugs presents a serious challenge to TB control worldwide. We investigated the status of drug resistance, including multidrug-resistant (MDR) TB, and possible risk factors among newly diagnosed TB patients in Hanoi, the capital of Viet Nam. Methods Clinical and epidemiological information was collected from 506 newly diagnosed patients with sputum smear- and culture-positive TB, and 489 (96.6%) MTB isolates were subjected to conventional drug susceptibility testing, spoligotyping, and 15-locus variable numbers of tandem repeats typing. Adjusted odds ratios (aORs) were calculated to analyze the risk factors for primary drug resistance. Results Of 489 isolates, 298 (60.9%) were sensitive to all drugs tested. Resistance to isoniazid, rifampicin, streptomycin, ethambutol, and MDR accounted for 28.2%, 4.9%, 28.2%, 2.9%, and 4.5%, respectively. Of 24 isolates with rifampicin resistance, 22 (91.7%) were MDR and also resistant to streptomycin, except one case. Factors associated with isoniazid resistance included living in old urban areas, presence of the Beijing genotype, and clustered strains [aOR = 2.23, 95% confidence interval (CI) 1.15–4.35; 1.91, 1.18–3.10; and 1.69, 1.06–2.69, respectively). The Beijing genotype was also associated with streptomycin resistance (aOR = 2.10, 95% CI 1.29–3.40). Human immunodeficiency virus (HIV) coinfection was associated with rifampicin resistance and MDR (aOR = 5.42, 95% CI 2.07–14.14; 6.23, 2.34–16.58, respectively). Conclusion Isoniazid and streptomycin resistance was observed in more than a quarter of TB patients without treatment history in Hanoi. Transmission of isoniazid-resistant TB among younger people should be carefully monitored in urban areas, where Beijing strains and HIV coinfection are prevalent. Choosing an optimal treatment regimen on the basis of the results of drug susceptibility tests and monitoring of treatment

  4. The present status of geography education in boys' intermediate schools of Riyadh, Saudi Arabia

    NASA Astrophysics Data System (ADS)

    Al-Gahtany, Abdulrahman Mohammed

    The purpose of this study was to describe the present status of geography education in boys' intermediate schools in Riyadh, Saudi Arabia as perceived by geography teachers and supervisors; that is, to investigate the objectives, content, methods of teaching, tools and resources that are available and used in classrooms, evaluation techniques, and problems encountered in the teaching of geography. To collect data from this representative sample population, a questionnaire was developed by the researcher specifically for this study. Questionnaire data was collected from 19 social studies supervisors and 213 geography teachers. Percentages, frequencies, means, and standard deviations were computed for each questionnaire item. Chi Square tests were applied to determine if any significant differences could be identified between the observed and expected responses of supervisors and teachers. Major findings of the study indicated that both supervisors and teachers tend to strongly support the identified geography objectives. Most teachers and supervisors also indicated that the current geography curriculum contains enough information about Saudi Arabia, the Arabic world, and the Islamic world. In addition, the also indicated that geography content promotes a sense of patriotism and cultural pride. Responses indicated that educators see deficiencies in the content: it does not focus sufficiently on current events nor on developing student skills such as research and technical skills like drawing maps. Lecture and discussion are the most commonly used strategies in the teaching of geography. Field trips, role-playing, scientific competitions, scientific games, solving problems, and individual learning are less commonly used. Teaching tools most commonly used are wall maps and earth globes, whereas the use of geographical transparencies, models, and instruments is not common. Most of the teachers do lot use computers in their teaching. Evaluation techniques depend

  5. Present status and trend of technological developments for millimeter wave sensing systems

    NASA Astrophysics Data System (ADS)

    Ihara, Toshio; Okamoto, Ken'ichi; Kitamura, Katsumi; Awaka, Jun; Manabe, Takeshi

    1989-06-01

    Millimeter wave atmospheric propagation characteristics and state-of-the-art millimeter wave component technologies are reviewed. Particular attention is given to the current status of technological developments for millimeter wave sensing systems such as automotive radars, automatic location identification systems, and industrial instrumentation radars.

  6. Similar calcium status is present in infants fed formula with and without prebiotics

    USDA-ARS?s Scientific Manuscript database

    Prebiotic oligosaccharides can increase calcium absorption in adolescents and adults. Whether they affect calcium absorption in infants has not been assessed. Few data are available to compare the calcium status of infants fed modern infant formulas to that of breast fed infants. To evaluate calcium...

  7. E-Learning in Supplemental Educational Systems in Taiwan: Present Status and Future Challenges

    ERIC Educational Resources Information Center

    Zhang, Ke; Hung, Jui-Long

    2009-01-01

    As Taiwan's full-scale e-learning initiatives moved to the seventh year in 2009, the current status and challenges of e-learning development there are yet to be fully understood. Further extending Zhang and Hung's (2006) investigation on e-learning in all universities and colleges in Taiwan, this study investigated the after-school programs (ASPs)…

  8. E-Learning in Supplemental Educational Systems in Taiwan: Present Status and Future Challenges

    ERIC Educational Resources Information Center

    Zhang, Ke; Hung, Jui-Long

    2009-01-01

    As Taiwan's full-scale e-learning initiatives moved to the seventh year in 2009, the current status and challenges of e-learning development there are yet to be fully understood. Further extending Zhang and Hung's (2006) investigation on e-learning in all universities and colleges in Taiwan, this study investigated the after-school programs (ASPs)…

  9. Sport Sociology and the Discipline of Sociology: Present Status and Speculations about the Future.

    ERIC Educational Resources Information Center

    Snyder, Eldon E.; Spreitzer, Elmer

    The status of the sociology of sport within the discipline of sociology is explored. Review of the subfield since 1971 indicates an increase in the number of publications and communication relating to sport sociology topics. It is hypothesized, however, that sport sociology will not in the near future receive equal acceptance within sociology with…

  10. A review on the mass spectrometric studies of americium: Present status and future perspective.

    PubMed

    Aggarwal, Suresh Kumar

    2016-05-06

    The manuscript reviews the various mass spectrometric techniques for analysis and chemical studies of Americium. These methods include thermal ionization mass spectrometry (TIMS), and inductively coupled plasma source mass spectrometry (ICPMS) for the determination of Am isotope ratios and concentration in nuclear fuel samples of interest in nuclear technology, and in complex biological and environmental samples. Ultra-sensitive mass spectrometric techniques of resonance-ionization mass spectrometry (RIMS), and accelerator-based mass spectrometry (AMS) are also discussed. The novel applications of electrospray ionization mass spectrometry (ESIMS) to understand the solution chemistry of Am and other actinides are presented. These studies are important in view of the world-wide efforts to develop novel complexing agents to separate lanthanides and minor actinides (Am, Np, and Cm) for partitioning and transmutation of minor actinides from the point of view of nuclear waste management. These mass spectrometry experiments are also of great interest to examine the covalent character of actinides with increasing atomic number. Studies on gas-phase chemistry of Am and its oxides with Knudsen effusion mass spectrometry (KEMS), Fourier-transform ion cyclotron resonance mass spectrometry (FTICR-MS), and laser-based experiments with reflectron time-of-flight mass spectrometer (R-ToF) are highlighted. These studies are important to understand the fundamental chemistry of 5f electrons in actinides. Requirement of certified isotopic reference materials of Am to improve the accuracy of experimental nuclear data (e.g., the half-life of (243) Am) is emphasized. © 2016 Wiley Periodicals, Inc. Mass Spec Rev.

  11. Mariner 9 celestial mechanics experiment - A status report.

    NASA Technical Reports Server (NTRS)

    Lorell, J.; Shapiro, I. I.

    1973-01-01

    There are two basic efforts in the Mariner 9 celestial mechanics experiment: the determination of the gravity field of Mars and the performance of a very precise test of the theory of general relativity. In addition, there are a number of astrodynamic constants that are being determined. All the analyses are based on the Mariner 9 radio tracking data.

  12. Status of the BNL muon (g{minus}2) experiment

    SciTech Connect

    Miller, J.P.; Brown, D.H.; Carey, R.M.; Earle, W.; Efstathiadis, E.; Hazen, E.S.; Hughes, B.J.; Krienen, F.; Ouyang, J.; Rind, O.; Roberts, B.L.; Sulak, L.R.; Trofimov, A.; Worstell, W.A.; Brown, H.N.; Bunce, G.; Cullen, J.; Danby, G.T.; Geller, J.; Hseuh, H.; Jackson, J.W.; Jia, L.; Larsen, R.; Lee, Y.Y.; Mapes, M.; Meng, W.; Morse, W.M.; Pai, C.; Pearson, C.; Polk, I.; Prigl, R.; Rankowitz, S.; Sandberg, J.; Semertzidis, Y.K.; Shutt, R.; Snydstrup, L.; Soukas, A.; Stillman, A.; Tallerico, T.; Tanaka, M.; Toldo, F.; Woodle, K.; Orlov, Y. Winn, D.; Grossmann, A.; Jungmann, K.; zu Putlitz, G.; von Walter, P. Haeberlen, U.; Deninger, W.; Hertzog, D.W.; Polly, C.; Sedykh, S.; Trofimov, A.; Chertovskikh, A.; Cushman, P.; Duong, L.; Giron, S.; Kindem, J.; Miller, D.; McNabb, R.; Timmermans, C.; Zimmerman, D.; Fedotovich, G.V.; Grigorev, D.N.; Golubev, V.B.; Khazin, B.I.; Logashenko, I.; Merzliakov, Yu; Monich, V.; Ryskulov, N.; Serednyakov, S.; Shatunov, Yu M.; Solodov, E.; Sato, T.; Kurokawa, S.; Ichii, S.; Hirabayashi, H.; Endo, K. Ishida, K. |; Kawall, D.; Hughes, V.W.; Grosse Perdekamp, M.; Fei, X.; Farley, F.J.M.; Disco, A.; Dhawan, S.K.; Deng, H.

    1997-05-01

    The muon (g{minus}2) experiment at Brookhaven has just completed a 3-month run for checkout and initial data-taking. In the first two months beam was taken in a parasitic mode where one out of ten AGS pulses was delivered for commissioning of the beam line, quadrupoles, detectors, and data acquisition system. This was followed by four weeks of dedicated data collection. The main components of the experiment, which include the pion/muon beam line, the superconducting inflector, the superferric storage ring with its pulsed electric quadrupoles and magnetic field measurement system, and the detector system based on lead-scintillating fiber electron calorimeters, have been satisfactorily commissioned. The muon (g{minus}2) precession frequency is clearly seen as a large signal. It is estimaed that over 25{times}10{sup 6} decay positrons with energies greater than 1.5 GeV have been detected. {copyright} {ital 1997 American Institute of Physics.}

  13. National Criticality Experiments Research Center: Capability and Status

    SciTech Connect

    Hayes, David K.; Myers, William L.

    2012-07-12

    After seven years, the former Los Alamos Critical Experiments Facility (LACEF), or Pajarito Site, has reopened for business as the National Criticality Experiments Research Center (NCERC) at the Nevada National Security Site (NNSS). Four critical assembly machines (Comet, Planet, Flat-Top, and Godiva-IV) made the journey from Los Alamos to the NNSS. All four machines received safety system upgrades along with new digital control systems. Between these machines, systems ranging from the thermal through the intermediate to the fast spectrum may be assembled. Steady-State, transient, and super-prompt critical conditions may be explored. NCERC is the sole remaining facility in the United States capable of conducting general-purpose nuclear materials handling including the construction and operation of high-multiplication assemblies, delayed critical assemblies, and prompt critical assemblies. Reconstitution of the unique capabilities at NCERC ensures the viability of (1) The Nuclear Renaissance, (2) Stockpile Stewardship, and (3) and the next generation of criticality experimentalists.

  14. Status and Prospects of Hirfl Experiments on Nuclear Physics

    NASA Astrophysics Data System (ADS)

    Xu, H. S.; Zheng, C.; Xiao, G. Q.; Zhan, W. L.; Zhou, X. H.; Zhang, Y. H.; Sun, Z. Y.; Wang, J. S.; Gan, Z. G.; Huang, W. X.; Ma, X. W.

    HIRFL is an accelerator complex consisting of 3 accelerators, 2 radioactive beams lines, 1 storage rings and a number of experimental setups. The research activities at HIRFL cover the fields of radio-biology, material science, atomic physics, and nuclear physics. This report mainly concentrates on the experiments of nuclear physics with the existing and planned experimental setups such as SHANS, RIBLL1, ETF, CSRe, PISA and HPLUS at HIRFL.

  15. The EEE experiment project: status and first physics results

    NASA Astrophysics Data System (ADS)

    Abbrescia, M.; Agocs, A.; Aiola, S.; Antolini, R.; Avanzini, C.; Baldini Ferroli, R.; Bencivenni, G.; Bossini, E.; Bressan, E.; Chiavassa, A.; Cicaló, C.; Cifarelli, L.; Coccia, E.; De Gruttola, D.; De Pasquale, S.; Di Giovanni, A.; D'Incecco, M.; Dreucci, M.; Fabbri, F. L.; Frolov, V.; Garbini, M.; Gemme, G.; Gnesi, I.; Gustavino, C.; Hatzifotiadou, D.; La Rocca, P.; Li, S.; Librizzi, F.; Maggiora, A.; Massai, M.; Miozzi, S.; Panareo, M.; Paoletti, R.; Perasso, L.; Pilo, F.; Piragino, G.; Regano, A.; Riggi, F.; Righini, G. C.; Romano, F.; Sartorelli, G.; Scapparone, E.; Scribano, A.; Selvi, M.; Serci, S.; Siddi, E.; Spandre, G.; Squarcia, S.; Taiuti, M.; Toselli, F.; Votano, L.; Williams, M. C. S.; Yánez, G.; Zichichi, A.; Zuyeuski, R.

    2013-06-01

    The Extreme Energy Events Project is an experiment for the detection of Extensive Air Showers which exploits the Multigap Resistive Plate Chamber technology. At the moment 40 EEE muon telescopes, distributed all over the Italian territory, are taking data, allowing the relative analysis to produce the first interesting results, which are reported here. Moreover, this Project has a strong added value thanks to its effectiveness in terms of scientific communication, which derives from the peculiar way it was planned and carried on.

  16. STATUS OF THE NEUTRALIZED DRIFT COMPRESSION EXPERIMENT (NDCX-II)

    SciTech Connect

    Waldron, W.L.; Kwan, J.W.

    2011-04-21

    The Neutralized Drift Compression Experiment (NDCX-II) is an 11 M$ induction accelerator project currently in construction at Lawrence Berkeley National Laboratory for warm dense matter (WDM) experiments investigating the interaction of ion beams with matter at elevated temperature and pressure. The machine consists of a lithium injector, induction accelerator cells, diagnostic cells, a neutralized drift compression line, a final focus solenoid, and a target chamber. The induction cells and some of the pulsed power systems have been reused from the decommissioned Advanced Test Accelerator at Lawrence Livermore National Laboratory after refurbishment and modification. The machine relies on a sequence of acceleration waveforms to longitudinally compress the initial ion pulse from 600 ns to less than 1 ns in {approx} 12 m. Radial confinement of the beam is achieved with 2.5 T pulsed solenoids. In the initial hardware configuration, 50 nC of Li{sup +} will be accelerated to 1.25 MeV and allowed to drift-compress to a peak current of {approx}40 A. The project started in the summer of 2009. Construction of the accelerator will be completed in the fall of 2011 and will provide a worldwide unique opportunity for ion-driven warm dense matter experiments as well as research related to novel beam manipulations for heavy ion fusion drivers.

  17. Status of the DAMIC Direct Dark Matter Search Experiment

    SciTech Connect

    Aguilar-Arevalo, A.; et al.

    2015-09-30

    The DAMIC experiment uses fully depleted, high resistivity CCDs to search for dark matter particles. With an energy threshold $\\sim$50 eV$_{ee}$, and excellent energy and spatial resolutions, the DAMIC CCDs are well-suited to identify and suppress radioactive backgrounds, having an unrivaled sensitivity to WIMPs with masses $<$6 GeV/$c^2$. Early results motivated the construction of a 100 g detector, DAMIC100, currently being installed at SNOLAB. This contribution discusses the installation progress, new calibration efforts near the threshold, a preliminary result with 2014 data, and the prospects for physics results after one year of data taking.

  18. Dissociation of past and present experience in problem solving using a virtual environment.

    PubMed

    Sturz, Bradley R; Bodily, Kent D; Katz, Jeffrey S

    2009-02-01

    An interactive 3D desktop virtual environment task was created to investigate learning mechanisms in human problem solving. Participants were assessed for previous video game experience, divided into two groups (Training and Control), and matched for gender and experience. The Training group learned specific skills within the virtual environment before being presented a problem. The Control group was presented the problem only. Completion time was faster for the Training group and was affected by level of previous video game experience. Results indicated problem solving was a function of specific and general experience and demonstrated a method for dissociating these two facets of experience.

  19. The Earthcare Cloud Profiling Radar, its PFM development status (Conference Presentation)

    NASA Astrophysics Data System (ADS)

    Nakatsuka, Hirotaka; Tomita, Eichi; Aida, Yoshihisa; Seki, Yoshihiro; Okada, Kazuyuki; Maruyama, Kenta; Ishii, Yasuyuki; Tomiyama, Nobuhiro; Ohno, Yuichi; Horie, Hiroaki; Sato, Kenji

    2016-10-01

    view, Doppler measurement from satellite is quite challenging Technology. In order to maintain and ensure the CPR performance, several types of calibration data will be obtained by CPR. Overall performance of CPR is checked by Active Radar Calibrator (ARC) equipped on the ground (CPR in External Calibration mode). ARC is used to check the CPR transmitter performance (ARC in receiver mode) and receiver performance (ARC in transmitter mode) as well as overall performance (ARC in transponder mode with delay to avoid the contamination with ground echo). In Japan, the instrument industrial Critical Design Review of the CPR was completed in 2013 and it was also complemented by an Interface and Mission aspects CPR CDR, involving ESA and the EarthCARE Prime, that was completed successfully in 2015. The CPR Proto-Flight Model is currently being tested with almost completion of Proto-Flight Model integration. After handed-over to ESA planned for the beginning of 2017, the CPR will be installed onto the EarthCARE satellite with the other instruments. After that the CPR will be tested, transported to Guiana Space Center in Kourou, French Guiana and launched by a Soyuz launcher in 2018. This presentation will show the summary of the latest CPR design and CPR PFM testing status.

  20. Current Status of the Gasdynamic Mirror Fusion Propulsion Experiment

    NASA Technical Reports Server (NTRS)

    Emrich, William J., Jr.

    2002-01-01

    Nuclear fusion appears to be the most promising concept for producing extremely high specific impulse rocket engines. One particular fusion concept which seems to be particularly well suited for fusion propulsion applications is the gasdynamic mirror (GDM). An experimental GDM device has been constructed at the NASA Marshall Space Flight Center to provide an initial assessment of the feasibility of this type of propulsion system. An initial shakedown of the device is currently underway with initial experiments slated to occur in late 2001. This device would operate at much higher plasma densities and with much larger L/D ratios than previous mirror machines. The high L/D ratio minimizes to a large extent certain magnetic curvature effects which lead to plasma instabilities causing a loss of plasma confinement. The high plasma density results in the plasma behaving much more like a conventional fluid with a mean free path shorter than the length of the device. This characteristic helps reduce problems associated with 'loss cone' microinstabilities. The device has been constructed to allow a considerable degree of flexibility in its configuration thus permitting the experiment to grow over time without necessitating a great deal of additional fabrication.

  1. Status of the Electromagnetic Calorimeter Trigger system at the Belle II experiment

    NASA Astrophysics Data System (ADS)

    Kim, S. H.; Lee, I. S.; Unno, Y.; Cheon, B. G.

    2017-09-01

    The Belle II experiment at the SuperKEKB collider in Japan has been under the construction toward a physics run in 2018 with an ultimate target of 40 times higher instantaneous luminosity than the KEKB collider. The main physics motivation is to search for the New Physics from heavy quark/lepton flavor decays. In order to select an event of interest efficiently under much higher luminosity and beam background environment than the KEKB, we have upgraded the Electromagnetic Calorimeter (ECL) hardware trigger system. It would be realized by the improvement of ECL trigger logic based on two main triggers, the total energy and the number of clusters, with an FPGA-based flexible architecture and a high speed serial link for the data transfer. We report the current status of hardware, firmware, and software that has been achieved so far. The overall scheme of the system will be presented as well.

  2. The current status of the GlueX experiment at Jefferson Lab

    NASA Astrophysics Data System (ADS)

    Shepherd, Matthew; GlueX Collaboration

    2016-03-01

    The GlueX experiment is designed to search for and study light hybrid mesons utilizing a 9 GeV linearly polarized photon beam that is derived from the 12 GeV electron beam of the recently upgraded CEBAF at Jefferson Lab. Construction of the GlueX detector was completed in winter 2015 with initial detector commissioning utilizing low-energy polarized photons occurring in spring 2015. During spring 2016, continued detector commissioning and initial running at the full design energy are planned. In this talk the current status of the GlueX detector performance and data collection will be discussed. The prospects for first physics results, future run plans, and long term upgrades will be briefly presented. Supported by the US Department of Energy Office of Nuclear Physics.

  3. Status of the CUORE and results from the CUORE-0 neutrinoless double beta decay experiments

    SciTech Connect

    Sisti, M.; Artusa, D. R.; Avignone, F. T.; Azzolini, O.; Balata, M.; Banks, T. I.; Bari, G.; Beeman, J.; Bellini, F.; Bersani, A.; Biassoni, M.; Brofferio, C.; Bucci, C.; Cai, X. Z.; Camacho, A.; Caminata, A.; Canonica, L.; Cao, X. G.; Capelli, S.; Cappelli, L.; Carbone, L.; Cardani, L.; Casali, N.; Cassina, L.; Chiesa, D.; Chott, N.; Clemenza, M.; Copello, S.; Cosmelli, C.; Cremonesi, O.; Creswick, R. J.; Cushman, J. S.; Dafinei, I.; Dally, A.; Datskov, V.; Dell'Oro, S.; Deninno, M. M.; Di Domizio, S.; di Vacri, M. L.; Drobizhev, A.; Ejzak, L.; Fang, D. Q.; Farach, H. A.; Faverzani, M.; Fernandes, G.; Ferri, E.; Ferroni, F.; Fiorini, E.; Franceschi, M. A.; Freedman, S. J.; Fujikawa, B. K.; Giachero, A.; Gironi, L.; Giuliani, A.; Gorla, P.; Gotti, C.; Gutierrez, T. D.; Haller, E. E.; Han, K.; Heeger, K. M.; Hennings-Yeomans, R.; Hickerson, K. P.; Huang, H. Z.; Kadel, R.; Keppel, G.; Kolomensky, Yu. G.; Li, Y. L.; Ligi, C.; Lim, K. E.; Liu, X.; Ma, Y. G.; Maiano, C.; Maino, M.; Martinez, M.; Maruyama, R. H.; Mei, Y.; Moggi, N.; Morganti, S.; Napolitano, T.; Nastasi, M.; Nisi, S.; Nones, C.; Norman, E. B.; Nucciotti, A.; O'Donnell, T.; Orio, F.; Orlandi, D.; Ouellet, J. L.; Pagliarone, C. E.; Pallavicini, M.; Palmieri, V.; Pattavina, L.; Pavan, M.; Pedretti, M.; Pessina, G.; Pettinacci, V.; Piperno, G.; Pira, C.; Pirro, S.; Pozzi, S.; Previtali, E.; Rosenfeld, C.; Rusconi, C.; Sala, E.; Sangiorgio, S.; Scielzo, N. D.; Smith, A. R.; Taffarello, L.; Tenconi, M.; Terranova, F.; Tian, W. D.; Tomei, C.; Trentalange, S.; Ventura, G.; Vignati, M.; Wang, B. S.; Wang, H. W.; Wielgus, L.; Wilson, J.; Winslow, L. A.; Wise, T.; Woodcraft, A.; Zanotti, L.; Zarra, C.; Zhang, G. Q.; Zhu, B. X.; Zucchelli, S.

    2016-05-31

    CUORE is a 741 kg array of TeO2 bolometers for the search of neutrinoless double beta decay of 130Te. The detector is being constructed at the Laboratori Nazionali del Gran Sasso, Italy, where it will start taking data in 2015. If the target background of 0.01 counts/(keV·kg·y) will be reached, in five years of data taking CUORE will have a 1σ half life sensitivity of 1026y. CUORE-0 is a smaller experiment constructed to test and demonstrate the performances expected for CUORE. The detector is a single tower of 52 CUORE-like bolometers that started taking data in spring 2013. The status and perspectives of CUORE will be discussed, and the first CUORE-0 data will be presented.

  4. One surgeon's Army experience with "wound shock" from Pearl Harbor to the present.

    PubMed

    Hardaway, Robert M

    2009-09-01

    The Army has had extensive experience in the study and treatment of shock, beginning with the American Civil War and continuing to the present. This is the story of one Army surgeon's experience, both in research and treatment of shock, from Pearl Harbor to the present.

  5. Status of Coherent Cherenkov Wakefield Experiment at UCLA

    SciTech Connect

    Cook, A. M.; Knyazik, A.; Rosenzweig, J. B.; Tikhoplav, R.; Travish, G.; Williams, O. B.

    2009-01-22

    Coherent Cherenkov radiation (CCR) wakefields are produced when a compressed electron beam travels along the axis of a hollow cylindrical dielectric tube. In a dielectric wakefield accelerator (DWA) these wakefields accelerate either a trailing electron bunch or the tail of the driving bunch, depending on the modal structure of the radiation. For an appropriate choice of dielectric structure geometry and beam parameters the device operates in a single-mode regime, producing sinusoidal wakefields with wavelengths in the THz range. We report on preliminary results of an experiment at UCLA studying the potential of a DWA structure to produce high-power, narrow-band THz radiation. First measurements include observation of 1 MW peak-power pulses of coherent broadband radiation from a compact dipole beam dump magnet.

  6. Status of Coherent Cherenkov Wakefield Experiment at UCLA

    NASA Astrophysics Data System (ADS)

    Cook, A. M.; Knyazik, A.; Rosenzweig, J. B.; Tikhoplav, R.; Travish, G.; Williams, O. B.

    2009-01-01

    Coherent Cherenkov radiation (CCR) wakefields are produced when a compressed electron beam travels along the axis of a hollow cylindrical dielectric tube. In a dielectric wakefield accelerator (DWA) these wakefields accelerate either a trailing electron bunch or the tail of the driving bunch, depending on the modal structure of the radiation. For an appropriate choice of dielectric structure geometry and beam parameters the device operates in a single-mode regime, producing sinusoidal wakefields with wavelengths in the THz range. We report on preliminary results of an experiment at UCLA studying the potential of a DWA structure to produce high-power, narrow-band THz radiation. First measurements include observation of 1 MW peak-power pulses of coherent broadband radiation from a compact dipole beam dump magnet.

  7. Status of the JUNO reactor anti-neutrino experiment

    NASA Astrophysics Data System (ADS)

    Lu, Haoqi; JUNO Collaboration

    2017-06-01

    The Jiangmen Underground Neutrino Observatory (JUNO) is a reactor antineutrino experiment with the aim to determine the neutrino mass hierarchy. The detector will be filled with 20 kilotons of liquid scintillator and instrumented with 18000 20-inch PMTs to achieve an unprecedented energy resolution of 3%@1 MeV. A 35.4 m diameter acrylic sphere will be built as a liquid scintillator vessel.The detector will be constructed in a 700-m-deep-underground laboratory to reduce cosmogenic muon flux. An external veto cosisting of a water Cherenkov detector and a top tracker will be used for cosmogenic muon detection and background reduction. The mass hierarchy sensitivity is expected to reach 3-4σ after 6 years of data taking. Civil construction and detector R&D are underway. Data taking is expected to start in 2020.

  8. Status and Recent Results from the Cream Experiment

    NASA Astrophysics Data System (ADS)

    Seo, E. S.; Ahn, H. S.; Bhoyar, P.; Eaton, J.; Ganel, O.; Han, J. H.; Haque, A.; Kim, K. C.; Kim, M. H.; Lee, M. H.; Lee, S. E.; Lutz, L.; Malinin, A.; Ofoha, O.; Ryu, S. S.; Smith, B. P.; Vartanyan, A.; Walpole, P.; Wu, J.; Yoo, J. H.; Yoon, Y. S.; Anderson, T.; Conklin, N. B.; Coutu, S.; Geske, M.; Mognet, S. I.; Barbier, L.; Link, J. T.; Mitchell, J. W.; Barrau, A.; Buénerd, M.; Coste, B.; Derome, L.; Mangin-Brinet, M.; Putze, A.; Sallaz-Damaz, Y.; Bazer-Bachi, R.; Beatty, J. J.; Brandt, T. J.; Bigongiari, G.; Maestro, P.; Zei, R.; Jeon, J. A.; Na, G.; Nam, J.; Nam, S.; Park, I. H.; Park, N. H.; Yang, J.; Menchaca-Rocha, A.; Nutter, S.

    2011-06-01

    The Cosmic Ray Energetics And Mass (CREAM) balloon-borne experiment has accumulated ~156 days of exposure during five successful flights over Antarctica. Energy measurements are made with a transition radiation detector and an ionization calorimeter. Charge measurements are made with timing scintillators, pixelated Si, and Cherenkov detectors to minimize the effect of backscattered particles. High energy cosmic-ray data were collected over a wide energy range from ~ 1010 to ~ 1015 eV at an average altitude of ~38.5 km, with ~3.9 g/cm2 atmospheric overburden. All cosmic-ray elements from protons (Z = 1) to iron nuclei (Z = 26) are separated with excellent charge resolution. The instrument performance, results from the ongoing data analysis, and their implications on cosmic-ray origin, acceleration and propagation are discussed.

  9. Status of soft photons in experiment E855

    SciTech Connect

    Woody, C.; Lissauer, D. ); Gomez del Campo, J.; Ray, A.; Shapira, D.; Tincknell, M. ); Clark, R. ); Erd, C.; Schukraft, J.; Willis, W. )

    1990-01-01

    Experiment E855 was carried out at the AGS at Brookhaven National Laboratory to study soft photon production near center of mass rapidity Y{sub cm} {approximately} 0 in proton-nucleus collisions at 10 at 18 GeV/c. This was the first dedicated experiment to study this phenomenon at these lower energies. It is important to note that the related process of low mass dilepton pair production has been studied extensively at these energies and an excess signal of dileptons above known hadronic backgrounds has been firmly established. E855 was designed to measure photon production from P{sub t} {approximately} 5 MeV/c up to several GeV/c. A search will be made for an excess of soft photons in the P{sub t} region below the Jacobian peak from {pi}{sup 0} decays, above that which is expected from hadronic bremsstrahlung. Any observed signal will be correlated with the total charged multiplicity in the event in order to determine its production mechanism. This correlation can be used to distinguish purely hadronic sources of soft photons, such as mesons decays and bremsstrahlung, which vary linearly with the charged multiplicity, and a thermal source of soft photons which would exhibit a quadratic dependence on the charged multiplicity. In addition, E855 will measure low energy photons from nuclear decays which can be a background for measuring soft photons near Y{sub cm} {approximately} 0. These photons are also interesting from a nuclear physics point of view, since the spectrum of photons from nuclei excited by incident high energy protons gives a measure of the temperature of the excited nucleus and the amount of excitation energy which can be transferred to a nucleus in a high energy proton collision.

  10. The Present Status of Airship Construction, Especially of Airship-framing Construction

    NASA Technical Reports Server (NTRS)

    Ebner, Hans

    1938-01-01

    This work proposes to sketch, in broad outline, the status of airship construction in the various countries, at a time when commerce over great distances might be finally opened up to the airship through the performances of the "Graf Zeppelin." After a short historical review, a survey of the most important rigid and semirigid airships built since 1925, their differences and special problems, is made. In more detailed treatment, the framing construction of the more recent rigid airships and some especially interesting structural questions are investigated.

  11. The Effectiveness of Window Presentation Strategy and Cognitive Style of Field Dependence Status on Learning from Mediated Instructions.

    ERIC Educational Resources Information Center

    Ikegulu, Patricia R.; Ikegulu, T. Nelson

    The primary purpose of this article is to review the literature on research studies conducted in the last five years on the effectiveness of window presentation strategies and the cognitive dependence status of field-dependent/independent (FD/FI) learners in a computer-mediated instruction (CMI). Secondary to this purpose is to summarize research…

  12. Seminar to Discuss the Present Status of Vision Engineering for the Dade County Board of Public Instruction.

    ERIC Educational Resources Information Center

    Pancoast, Ferendino, Grafton and Skeels, Architects, Miami, FL.

    Proceedings of a seminar on the present status of vision engineering and the possible effects on criteria for school planning. A discussion by Dr. H. Richard Blackwell on vision engineering is included. Topics of discussion include--(1) broad aspects of the effect of light upon sight, (2) lighting variables and task visibility, (3) lighting…

  13. Undergraduate engineering student experiences: Comparing sex, gender and switcher status

    NASA Astrophysics Data System (ADS)

    Fergen, Brenda Sue

    This dissertation explores undergraduate engineering experiences, comparing men with women and switchers with non-switchers. Factors related to a chilly academic climate and gender-role socialization are hypothesized to contribute to variations in men's and women's academic experiences and persistence rates. Both quantitative and qualitative data are utilized in an effort to triangulate the findings. Secondary survey data, acquired as result of a 1992 Academic Environment Survey, were utilized to test the hypothesis that sex is the most important predictor (i.e., demographic variable) of perceptions of academic climate. Regression analyses show that sex by itself is not always a significant determinant. However, when sex and college (engineering vs. other) are combined into dummy variables, they are statistically significant in models where sex was not significant alone. This finding indicates that looking at sex differences alone may be too simplistic. Thirty personal interviews were conducted with a random stratified sample of undergraduate students from the 1993 engineering cohort. The interview data indicate that differences in childhood socialization are important. With regard to persistence, differences in socialization are greater for switchers vs. non-switchers than men vs. women. Thus, gender-role socialization does not appear to play as prominent a role in women's persistence as past literature would indicate. This may be due to the self-selection process that occurs among women who choose to pursue engineering. Other aspects of childhood socialization such as parents' level of educational and occupation, students' high school academic preparation and knowledge of what to expect of college classes appear to be more important. In addition, there is evidence that, for women, male siblings play an important role in socialization. There is also evidence that women engineering students at Midwestern University face a chilly academic climate. The factors which

  14. Status of the TREK/E36 Experiment at J-PARC

    NASA Astrophysics Data System (ADS)

    Kohl, Michael; TREK/E36 Collaboration

    2015-04-01

    The TREK/E36 experiment will provide a precision test of lepton universality in the Ke 2 /Kμ 2 ratio to search for new physics beyond the Standard Model. Simultaneously it will search for light U(1) gauge bosons and sterile neutrinos below 300 MeV/c2, which could be associated with dark matter or explain established muon-related anomalies such as the muon anomalous magnetic moment and the proton radius puzzle. The experiment is scheduled to run in 2015 at the J-PARC K1.1BR kaon beamline. It uses a scintillating fiber target to stop a beam of up to 106 positive kaons per second. The kaon decay products are detected with a large-acceptance toroidal spectrometer capable of tracking charged particles with high resolution, combined with a photon calorimeter with large solid angle and redundant particle identification systems. An overview of the planned experiment and the current project status will be presented. This project has been supported by DOE Early Career Award DE-SC0003884.

  15. Rolling and tumbling: status of the SuperAGILE experiment

    NASA Astrophysics Data System (ADS)

    Del Monte, E.; Costa, E.; di Persio, G.; Donnarumma, I.; Evangelista, Y.; Feroci, M.; Lapshov, I.; Lazzarotto, F.; Mastropietro, M.; Morelli, E.; Pacciani, L.; Rapisarda, M.; Rubini, A.; Soffitta, P.; Tavani, M.; Argan, A.; Trois, A.

    2010-07-01

    The SuperAGILE experiment is the hard X-ray monitor of the AGILE mission. It is a 2 x one-dimensional imager, with 6-arcmin angular resolution in the energy range 18 - 60 keV and a field of view in excess of 1 steradian. SuperAGILE is successfully operating in orbit since Summer 2007, providing long-term monitoring of bright sources and prompt detection and localization of gamma-ray bursts. Starting on October 2009 the AGILE mission lost its reaction wheel and the satellite attitude is no longer stabilized. The current mode of operation of the AGILE satellite is a Spinning Mode, around the Sun-pointing direction, with an angular velocity of about 0.8 degree/s (corresponding to 8 times the SuperAGILE point spread function every second). In these new conditions, SuperAGILE continuously scans a much larger fraction of the sky, with much smaller exposure to each region. In this paper we review some of the results of the first 2.5 years of "standard" operation of SuperAGILE, and show how new implementations in the data analysis software allows to continue the hard X-ray sky monitoring by SuperAGILE also in the new attitude conditions.

  16. Present status of recycling waste mobile phones in China: a review.

    PubMed

    Li, Jingying; Ge, Zhongying; Liang, Changjin; An, Ni

    2017-07-01

    A large number of waste mobile phones have already been generated and are being generated. Various countries around the world have all been positively exploring the way of recycling and reuse when facing such a large amount of waste mobile phones. In some countries, processing waste mobile phones has been forming a complete industrial chain, which can not only recycle waste mobile phones to reduce their negative influence on the environment but also turn waste into treasure to acquire economic benefits dramatically. However, the situation of recycling waste mobile phones in China is not going well. Waste mobile phones are not formally covered by existing regulations and policies for the waste electric and electronic equipment in China. In order to explore an appropriate system to recover waste mobile phones, the mobile phone production and the amount of waste mobile phones are introduced in this paper, and status of waste mobile phones recycling is described; then, the disposal technology of electronic waste that would be most likely to be used for processing of electronic waste in industrial applications in the near future is reviewed. Finally, rationalization proposals are put forward based on the current recovery status of waste mobile phones for the purpose of promoting the development of recycling waste mobile phones in developing countries with a special emphasis on China.

  17. CURRENT STATUS OF THE G0 PARITY VIOLATION EXPERIMENT CARRIED OUT AT JEFFERSON LABORATORY

    SciTech Connect

    Bimbot, L.

    2010-12-01

    Among experiments looking for strangeness in nuclear systems, electron scattering parity-violation type experiments aim mainly at measuring the strange quark contributions to the form factors of the proton. They can be accessed by measuring asymmetry in longitudinally polarized electron elastic scattering on hydrogen. The parity-violating asymmetry is measured at the ~ 10-7 level of accuracy, and when combined with the electromagnetic form factors of the proton, the strange form factors can be determined. The full separation of form factors according to quark flavour requires measurements at forward angle on hydrogen and at backward angle on proton and deuteron. The experimental setups used for the G0 experiment in the two different configurations will be described. The status of the analysis and the current results will be presented and discussed in relation with other experiments past and planned. The G0 forward angle measurement(2) detected the recoil proton with a segmented detector covering, for one incident energy, different Q2 bins ranging from 0.1 to 1.0 (GeV/c)2. This measurement provided a linear combination of strange magnetic and strange electric form factors for each Q2. In the backward angle configuration, electrons were detected and just one Q2 value was covered at a given incident energy. Due to time limitation, only two cases have been studied: Q2 ~ 0.63 and 0.23 (GeV/c)2. These values were chosen to be directly comparable with results from other experiments. By combining backward and forward configuration measurements it is possible to extract separately the electric and the magnetic strange form factors. The measurements are complete. The analysis, still in progress, will be described. A few comments will also be made regarding some other aspects of physics accessible in simultaneous measurements: neutral current in N transition parity violation in inclusive - production and 2 contribution to elastic scattering.

  18. Status of the NASA GMAO Observing System Simulation Experiment

    NASA Technical Reports Server (NTRS)

    Prive, Nikki C.; Errico, Ronald M.

    2014-01-01

    An Observing System Simulation Experiment (OSSE) is a pure modeling study used when actual observations are too expensive or difficult to obtain. OSSEs are valuable tools for determining the potential impact of new observing systems on numerical weather forecasts and for evaluation of data assimilation systems (DAS). An OSSE has been developed at the NASA Global Modeling and Assimilation Office (GMAO, Errico et al 2013). The GMAO OSSE uses a 13-month integration of the European Centre for Medium- Range Weather Forecasts 2005 operational model at T511/L91 resolution for the Nature Run (NR). Synthetic observations have been updated so that they are based on real observations during the summer of 2013. The emulated observation types include AMSU-A, MHS, IASI, AIRS, and HIRS4 radiance data, GPS-RO, and conventional types including aircraft, rawinsonde, profiler, surface, and satellite winds. The synthetic satellite wind observations are colocated with the NR cloud fields, and the rawinsondes are advected during ascent using the NR wind fields. Data counts for the synthetic observations are matched as closely as possible to real data counts, as shown in Figure 2. Errors are added to the synthetic observations to emulate representativeness and instrument errors. The synthetic errors are calibrated so that the statistics of observation innovation and analysis increments in the OSSE are similar to the same statistics for assimilation of real observations, in an iterative method described by Errico et al (2013). The standard deviations of observation minus forecast (xo-H(xb)) are compared for the OSSE and real data in Figure 3. The synthetic errors include both random, uncorrelated errors, and an additional correlated error component for some observational types. Vertically correlated errors are included for conventional sounding data and GPS-RO, and channel correlated errors are introduced to AIRS and IASI (Figure 4). HIRS, AMSU-A, and MHS have a component of horizontally

  19. Status of Experiment NEUTRINO-4 Search for Sterile Neutrino

    NASA Astrophysics Data System (ADS)

    Serebrov, A.; Ivochkin, V.; Samoilov, R.; Fomin, A.; Polyushkin, A.; Zinoviev, V.; Neustroev, P.; Golovtsov, V.; Chernyj, A.; Zherebtsov, O.; Martemyanov, V.; Tarasenkov, V.; Aleshin, V.; Petelin, A.; Izhutov, A.; Tuzov, A.; Sazontov, S.; Ryazanov, D.; Gromov, M.; Afanasiev, V.; Zaytsev, M.; Chaikovskii, M.

    2017-01-01

    In order to carry out research in the field of possible existence of a sterile neutrino the laboratory based on SM-3 reactor (Dimitrovgrad, Russia) was created to search for oscillations of reactor antineutrino. The prototype of a multi-section neutrino detector with liquid scintillator volume of 350 l was installed in the middle of 2015. It is a moveable inside the passive shielding detector, which can be set at distance range from 6 to 11 meters from the reactor core. Measurements of antineutrino flux at such short distances from the reactor core are carried out with moveable detector for the first time. The measurements with full-scale detector with liquid scintillator volume of 3m3 (5x10 sections) was started only in June, 2016. The today available data is presented in the article.

  20. TPC status for MPD experiment of NICA project

    NASA Astrophysics Data System (ADS)

    Averyanov, A.; Bazhazhin, A.; Chepurnov, V. F.; Chepurnov, V. V.; Cheremukhina, G.; Chernenko, S.; Fateev, O.; Kiriushin, Yu.; Kolesnikov, A.; Korotkova, A.; Levchanovsky, F.; Lukstins, J.; Movchan, S.; Pilyar, A.; Razin, S.; Ribakov, A.; Samsonov, V.; Vereschagin, S.; Zanevsky, Yu.; Zaporozhets, S.; Zruev, V.

    2017-06-01

    In a frame of the JINR scientific program on study of hot and dense baryonic matter a new accelerator complex Ion Collider fAcility (NICA) based on the Nuclotron-M is under realization. It will operate at luminosity up to 1027 cm-2s-1 for Au79+ ions. Two interaction points are foreseen at NICA for two detectors which will operate simultaneously. One of these detectors, the Multi-Purpose Detector (MPD), is optimized for investigations of heavy-ion collisions. The Time-Projection Chamber (TPC) is the main tracking detector of the MPD central barrel. It is a well-known detector for 3-dimensional tracking and particle identification for high multiplicity events. The conceptual layout of MPD and detailed description of the design and main working parameters of TPC, the readout system based on MWPC and readout electronics as well as the TPC subsystems and tooling for assembling and integration TPC into MPD are presented.

  1. Computers in clinical assessment: historical developments, present status, and future challenges.

    PubMed

    Butcher, James N; Perry, Julia; Hahn, Jungwon

    2004-03-01

    Computerized testing methods have long been regarded as a potentially powerful asset for providing psychological assessment services. Ever since computers were first introduced and adapted to the field of assessment psychology in the 1950s, they have been a valuable aid for scoring, data processing, and even interpretation of test results. The history and status of computer-based personality and neuropsychological tests are discussed in this article. Several pertinent issues involved in providing test interpretation by computer are highlighted. Advances in computer-based test use, such as computerized adaptive testing, are described and problems noted. Today, there is great interest in expanding the availability of psychological assessment applications on the Internet. Although these applications show great promise, there are a number of problems associated with providing psychological tests on the Internet that need to be addressed by psychologists before the Internet can become a major medium for psychological service delivery. Copyright 2004 Wiley Periodicals, Inc. J Clin Psychol.

  2. Smoking status and sex as indicators of differences in 2582 obese patients presenting for weight management.

    PubMed

    Abunassar, Michael J; Wells, George A; Dent, Robert R

    2012-01-01

    Smoking remains the most common preventable cause of death. Very little tobacco exposure can increase cardiovascular disease risk. The relationship between smoking, sex, and weight remains unclear. Between September 1992 and June 2007, 2582 consenting patients starting the Ottawa Hospital Weight Management program were grouped by sex and smoking status. "Former smokers" (771 females, 312 males) had quit for at least 1 year. "Smokers" (135 females, 54 males) smoked > 9 cigarettes daily. There were 979 females and 331 males who never smoked. Using SAS 9.2 statistical software, the prevalence of coronary artery disease (CAD), type 2 diabetes (T2DM), major depressive disorder (MDD), and medication use among the groups was compared (Chi-square [χ(2)]). Anthropometric measurements, lipid, glucose and thyroid levels were compared using analysis of variance (ANOVA). Interactions were assessed using 2-way ANOVA analysis for continuous data, and logistic regression for discrete data. Smokers were more likely to have MDD (χ(2)), lower high-density lipoprotein levels and higher triglyceride levels than other groups. Former smokers had a greater prevalence of CAD, T2DM on pharmacotherapy, and impaired fasting glucose than other groups. They were also more likely to be taking lipid-lowering agents and antihypertensives (χ(2)). Never smokers had less MDD, CAD, and were less likely to be on antidepressants than the other groups. Males were more likely to have CAD and T2DM than females. Females were more likely to have MDD than males. Interactions between smoking status and sex were found for age, weight, fasting glucose and thyroid-stimulating hormone levels. Obese never smokers suffer from the fewest chronic diseases. Obese former smokers have a greater prevalence of CAD, T2DM on pharmacotherapy, and impaired fasting glucose than other groups. Thus, clinicians and researchers should avoid combining former smokers with never smokers as "nonsmokers" in research and treatment

  3. Human islet allotransplantation: world experience and current status.

    PubMed

    Cretin, N; Bühler, L; Fournier, B; Caulfield, A; Oberholzer, J; Mentha, G; Morel, P

    1998-01-01

    Currently type-I diabetes mellitus is treated with exogenous insulin administration, but traditional insulin therapy does not prevent long-term systemic complications and therefore alternatives should be sought. Presently the only option is to substitute the insulin-producing beta cells in order to obtain a more physiological way to deliver insulin. Simultaneous kidney and pancreas transplantation is an established procedure. Pancreas transplantation, however, is a major surgical procedure with a high rate of complications. Transplantation of the isolated insulin-secreting islets of Langerhans is an alternative approach, which is easier and safer than whole organ transplantation. Since 1990, clinical trials of islet transplantation have begun in a few specialized centers worldwide and the International Islet Registry counting 305 human islet allografts at the end of 1995. Insulin independence at 1 year was achieved in 8% of the patients, but 20% of cases showed a graft function with a normal basal C peptide and improved glycemic regulation. We review here the different aspects of human islets of Langerhans allotransplatation, namely historical aspects, indications, isolation and purification procedures and the results obtained.

  4. A subordinate status position increases the present value of financial resources for low 2D:4D men.

    PubMed

    Millet, Kobe; Dewitte, Siegfried

    2008-01-01

    It has been suggested that the ratio of the length of the 2nd and 4th fingers (digit ratio or 2D:4D) is related to prenatal testosterone with lower ratios thought to be influenced by higher prenatal testosterone levels. Accordingly, low 2D:4D has been associated to a number of fitness-related factors, such as high status in competitive sports and in music. Recent evidence suggests that 2D:4D is also related to economic decision making. We combine both streams of research in the present paper. In two studies we manipulated status in two different ways. We found that a subordinate position raises discount rates, consistent with the reasoning that the present utility of money is higher for men in this position. Moreover, the effect was more pronounced for men with a low 2D:4D. There was a significant negative relationship between 2D:4D and level of discounting in a subordinate status position, but no significant relationship emerged in the dominant status position. Our studies add evidence to the recent line of research associating digit ratio and economic decision making. Moreover, our studies show that future 2D:4D research should focus on plausible interactions between 2D:4D and context cues rather than on linear relations. (c) 2007 Wiley-Liss, Inc.

  5. Conservation status and regional habitat priorities for the Orinoco crocodile: Past, present, and future

    PubMed Central

    Espinosa-Blanco, Ariel S.; Morales-Betancourt, Mónica A.; Seijas, Andrés E.; Lasso, Carlos A.; Antelo, Rafael; Densmore, Llewellyn D.

    2017-01-01

    Conservation of large predator species has historically been a challenge because they often overlap in resource utilization with humans; furthermore, there is a general lack of in-depth knowledge of their ecology and natural history. We assessed the conservation status of the Orinoco crocodile (Crocodylus intermedius), defining regional habitat priorities/crocodile conservation units (RHP/CCU) and regional research priorities (RRP) for this species. We also estimated a species distribution model (SDM) to define current suitable areas where the species might inhabit and/or that might be successfully colonized. The SDM area obtained with a suitable habitat probability ≥ 0.5 was 23,621 km2. Out of 2,562 km2 are included within protected areas in both Colombia (1,643 km2) and Venezuela (919 km2), which represents only 10.8% of C. intermedius’ potential range. Areas such as Laguna de Chigüichigüe (flood plain lagoon) exhibited an increase in population abundance. In contrast, localities such as the Cojedes and Manapire Rivers reported a significant reduction in relative abundance values. In Colombia, disparity in previous survey methods prevented accurate estimation of population trends. Only one study in this country described an increase over a 13 years span in the Ele, Lipa, and Cravo Norte River populations based on nest surveys. We defined 34 critical areas (16 in Colombia, 17 in Venezuela, and one covering both countries) where we need to preserve/research/monitor and/or generate management actions, 10 RHP/CCU (six from Venezuela and four from Colombia) and 24 RRP (11 from Venezuela, 12 from Colombia, and one in both countries). Caño Guaritico (Creek) and the Capanaparo River in Venezuela and the Ele, Lipa, Cravo Norte River System and the Guayabero River in Colombia were defined as areas with the most optimal conditions for long-term preservation and maintenance of C. intermedius populations. We conclude that the conservation status of this species is

  6. Conservation status and regional habitat priorities for the Orinoco crocodile: Past, present, and future.

    PubMed

    Balaguera-Reina, Sergio A; Espinosa-Blanco, Ariel S; Morales-Betancourt, Mónica A; Seijas, Andrés E; Lasso, Carlos A; Antelo, Rafael; Densmore, Llewellyn D

    2017-01-01

    Conservation of large predator species has historically been a challenge because they often overlap in resource utilization with humans; furthermore, there is a general lack of in-depth knowledge of their ecology and natural history. We assessed the conservation status of the Orinoco crocodile (Crocodylus intermedius), defining regional habitat priorities/crocodile conservation units (RHP/CCU) and regional research priorities (RRP) for this species. We also estimated a species distribution model (SDM) to define current suitable areas where the species might inhabit and/or that might be successfully colonized. The SDM area obtained with a suitable habitat probability ≥ 0.5 was 23,621 km2. Out of 2,562 km2 are included within protected areas in both Colombia (1,643 km2) and Venezuela (919 km2), which represents only 10.8% of C. intermedius' potential range. Areas such as Laguna de Chigüichigüe (flood plain lagoon) exhibited an increase in population abundance. In contrast, localities such as the Cojedes and Manapire Rivers reported a significant reduction in relative abundance values. In Colombia, disparity in previous survey methods prevented accurate estimation of population trends. Only one study in this country described an increase over a 13 years span in the Ele, Lipa, and Cravo Norte River populations based on nest surveys. We defined 34 critical areas (16 in Colombia, 17 in Venezuela, and one covering both countries) where we need to preserve/research/monitor and/or generate management actions, 10 RHP/CCU (six from Venezuela and four from Colombia) and 24 RRP (11 from Venezuela, 12 from Colombia, and one in both countries). Caño Guaritico (Creek) and the Capanaparo River in Venezuela and the Ele, Lipa, Cravo Norte River System and the Guayabero River in Colombia were defined as areas with the most optimal conditions for long-term preservation and maintenance of C. intermedius populations. We conclude that the conservation status of this species is still

  7. Present status and plans for upgrading the Lujan neutron scattering center

    SciTech Connect

    Rhyne, James J

    2010-01-01

    The Lujan Center, part of the LANSCE accelerator complex at Los Alamos National Laboratory, operates a comprehensive neutron scattering facility for the U.S. Department of Energy that serves approximately 300 users per year. This paper will discuss the current instruments and status of the facility and also focus on the plans for a major upgrade of the Center including new instruments and enhancements to specific existing instruments. The instrument suite currently includes two reflectometers (one with full polarization), an engineering diffraction machine, a diffractometer specialized to pair-distribution analysis, 2 general purpose powder diffractometers, and 2 inelastic spectrometers. To complement these spectrometers, a full range of pressure, temperature, and magnetic field sample environments is available for users. As part of the planning for a forthcoming enhancement of Lujan Center, a series of workshops have been held over the past year to encourage user input to the design for new instruments as well as major upgrades of existing machines. Many of the planned facilities are designed to take advantage of the Lujan Center 20 Hz pulse repetition rate and cold source moderators, both of which are beneficial for high-resolution instruments using long neutron wavelengths.

  8. Present status of the liquid lithium target facility in the international fusion materials irradiation facility (IFMIF)

    NASA Astrophysics Data System (ADS)

    Nakamura, Hiroo; Riccardi, B.; Loginov, N.; Ara, K.; Burgazzi, L.; Cevolani, S.; Dell'Orco, G.; Fazio, C.; Giusti, D.; Horiike, H.; Ida, M.; Ise, H.; Kakui, H.; Matsui, H.; Micciche, G.; Muroga, T.; Nakamura, Hideo; Shimizu, K.; Sugimoto, M.; Suzuki, A.; Takeuchi, H.; Tanaka, S.; Yoneoka, T.

    2004-08-01

    During the three year key element technology phase of the International Fusion Materials Irradiation Facility (IFMIF) project, completed at the end of 2002, key technologies have been validated. In this paper, these results are summarized. A water jet experiment simulating Li flow validated stable flow up to 20 m/s with a double reducer nozzle. In addition, a small Li loop experiment validated stable Li flow up to 14 m/s. To control the nitrogen content in Li below 10 wppm will require surface area of a V-Ti alloy getter of 135 m 2. Conceptual designs of diagnostics have been carried out. Moreover, the concept of a remote handling system to replace the back wall based on `cut and reweld' and `bayonet' options has been established. Analysis by FMEA showed safe operation of the target system. Recent activities in the transition phase, started in 2003, and plan for the next phase are also described.

  9. A greenhouse experiment for the identification of spectral indices for crop water and nitrogen status assessment

    NASA Astrophysics Data System (ADS)

    Marino Gallina, Pietro; Bechini, Luca; Cabassi, Giovanni; Cavalli, Daniele; Chiaradia, Enrico Antonio; Corti, Martina; Ferrante, Antonio; Martinetti, Livia; Masseroni, Daniele; Morgutti, Silvia; Nocito, Fabio Francesco; Facchi, Arianna

    2015-04-01

    Improvements in crop production depend on the correct adoption of agronomic and irrigation management strategies. The use of high spatial and temporal resolution monitoring methods may be used in precision agriculture to improve the efficiency in water and nutrient input management, guaranteeing the environmental sustainability of agricultural productions. In the last decades, many indices for the monitoring of water or nitrogen status of crops were developed by using multispectral images and, more recently, hyperspectral and thermal images acquired by satellite of airborne platforms. To date, however, comprehensive studies aimed at identifying indices as independent as possible for the management of the two types of stress are still scarce in the literature. Moreover, the chemometric approach for the statistical analysis of the acquired images is not yet widely experienced in this research area. In this context, this work presents the set-up of a greenhouse experiment that will start in February 2015 in Milan (Northern Italy), which aims to the objectives described above. The experiment will be carried out on two crops with a different canopy geometry (rice and spinach) subjected to four nitrogen treatments, for a total of 96 pots. Hyperspectral scanner and thermal images will be acquired at four phenological stages. At each phenological phase, acquisitions will be conducted on one-fourth of the pots, in the first instance in good water conditions and, subsequently, at different time steps after the cessation of irrigation. During the acquisitions, measurements of leaf area index and biomass, chlorophyll and nitrogen content in the plants, soil water content, stomatal conductance and leaf water potential will be performed. Moreover, on leaf samples, destructive biochemical analysis will be conducted to evaluate the physiological stress status of crops in the light of different irrigation and nutrient levels. Multivariate regression analysis between the acquired

  10. The present status of the LLNL Evaluated Charged Particle Library (ECPL)

    SciTech Connect

    Mac Gregor, M.H.

    1987-03-13

    The present report is written with two purposes in mind: to summarize the charged-particle reactions that presently exist in Evaluated Charge Particle Library; and to list all of the low-Z charged-particle reactions for which data exist in the Livermore experimental data compilation. 2 tabs.

  11. Racial and Ethnic Identity Theory, Measurement, and Research in Counseling Psychology: Present Status and Future Directions

    ERIC Educational Resources Information Center

    Ponterotto, Joseph G.; Park-Taylor, Jennie

    2007-01-01

    The present article integrates and expands on the special section contributions of K. O. Cokley (2007); J. E. Helms (2007); J. E. Trimble (2007); S. M. Quintana (2007); and J. S. Phinney and A. D. Ong (2007). The authors of the present article begin with a note on politics and ideology in writings on racial identity development and review general…

  12. Racial and Ethnic Identity Theory, Measurement, and Research in Counseling Psychology: Present Status and Future Directions

    ERIC Educational Resources Information Center

    Ponterotto, Joseph G.; Park-Taylor, Jennie

    2007-01-01

    The present article integrates and expands on the special section contributions of K. O. Cokley (2007); J. E. Helms (2007); J. E. Trimble (2007); S. M. Quintana (2007); and J. S. Phinney and A. D. Ong (2007). The authors of the present article begin with a note on politics and ideology in writings on racial identity development and review general…

  13. Turner syndrome: review of clinical, neuropsychiatric, and EEG status: an experience of tertiary center.

    PubMed

    Saad, Khaled; Abdelrahman, Ahmed A; Abdel-Raheem, Yasser F; Othman, Essam R; Badry, Reda; Othman, Hisham A K; Sobhy, Karema M

    2014-03-01

    We reviewed the clinical, neuropsychiatric, and EEG status of 53 turner syndrome (TS) females, aged 3-16 years, in Assiut university hospitals, Upper Egypt. The diagnosis and care of patients with TS in Egypt is still in the developing stage. Hence this study was undertaken to review the details of patients with TS with respect to the pattern of cognitive, psychiatric, and motor dysfunction. We aimed to provide a comprehensive data about the experience of our center comparable to previous studies, which have been published in this field. This will contribute to a better definition of the neuropsychiatric features that may be specific to TS that allows early and better detection and management of these cases. We found FSIQ and verbal IQ that seem to be at a nearly normal level and a decreased performance IQ. ADHD and autistic symptoms were found in 20.70 and 3.77 % of our cohort, respectively. The motor performance in TS was disturbed, with some neurological deficits present in 17 % (reduced muscle tone and reduced muscle power). In addition, females with TS in our study exhibit social and emotional problems, including anxiety (5.66 %) and depression (11.30 %). The EEG results revealed abnormalities in seven patients (13.20 %). One patient presenting with generalized tonic-clonic seizures showed generalized epileptiform activity, and six patients presenting with intellectual disabilities showed abnormal EEG background activity.

  14. Near-Real Time Data for Space Weather Analyses: Present Status and Future

    NASA Technical Reports Server (NTRS)

    Hesse, Michael; Pulkkinen, Antti; Zheng, Yihua; Maddox, Marlo H.; Kuznetsova, Maria M.

    2011-01-01

    Assessments of the present state and future evolution of the space environment heavily relies on timely access to appropriate environmental measurements. These, near real-time (nrt), measurements provide a direct assessment of local or remote space environment conditions, they contribute to a more global description of Space Weather parameters through assimilative models, and they provide essential input into forecasting models. Unlike meteorology, however, the provision of these data is not a mainstream activity in the sense that critical space environment data are often derived from research rather than operational sensors. In addition, space research is a relatively immature field, where SUbstantial gaps in our knowledge impede our ability to optimally use available data streams. In this presentation, we provide examples of presently employed nrt data streams and their utility. We further discuss challenges and opportunities associated with the present approach to space weather forecasting. Finally, an outlook toward the future will be presented.

  15. Status of proof-of-principle experiment for coherent electron cooling

    SciTech Connect

    Pinayev I.; Belomestnykh, S.; Bengtsson, J.; Ben-Zvi, I.; Elizarov, A. et al

    2012-05-20

    Coherent electron cooling (CEC) has a potential to significantly boost luminosity of high-energy, high-intensity hadron colliders. To verify the concept we conduct proof-of-the-principle experiment at RHIC. In this paper, we describe the current experimental setup to be installed into 2 o'clock RHIC interaction regions. We present current design, status of equipment acquisition and estimates for the expected beam parameters. We use a dogleg to merge the electron and ion beams. The ions 'imprint' their distribution into the electron beam via a space charge density modulation. The modulation is amplified in an FEL comprised of a 7-m long helical wiggler. The ions are co-propagating with electron beam through the FEL. The ion's average velocity is matched to the group velocity of the wave-packet of e-beam density modulation in the FEL. A three-pole wiggler at the exit of the FEL tune the phase of the wave-packet so the ion with the central energy experience the maximum of the e-beam density modulation, where electric field is zero. The time-of-flight dependence on ion's provides for the electrical field caused by the density modulation to reduce energy spread of the ion beam. The used electron beam is bent off the ion path and damped.

  16. Status of The Facility for Experiments of Nuclear Reactions in Stars

    NASA Astrophysics Data System (ADS)

    Longland, Richard; Kelley, John; Marshall, Caleb; Portillo, Federico; Setoodehnia, Kiana; Underwood, Daniel

    2016-09-01

    To make connections between observations of stellar atmospheres and the processes occurring deep inside stars, me must rely on accurate nuclear cross sections. Often, the Coulomb barrier makes these cross sections immeasurably small in the laboratory. Particle transfer reactions are one tool in our inventory that can be used to infer the necessary properties of nuclear reactions, thus opening an avenue to calculate their cross sections. Enge split-pole magnetic spectrographs are one tool in our inventory that have been used successfully to perform these experiments. However, after a rash of closures, there were no operational spectrographs of this kind in North America to provide these valuable capabilities. Over the last few years, we have revived the Enge split-pole spectrograph at TUNL. We have also upgraded much of the equipment, ranging from the data acquisition system to the control system and detector package. These upgrades have enabled a powerful, flexible, and modern facility - the Facility for Experiments of Nuclear Reactions in Stars (FENRIS). In this talk, I will present a status upgrade of FENRIS, highlighting our upgrades, capabilities, and first science results. I will also highlight future upgrade plans for the facility.

  17. Status of joint US/USSR experiments planned for the Cosmos '83 biosatellite mission

    NASA Technical Reports Server (NTRS)

    Souza, K. A.

    1982-01-01

    The plans and status of the fourth joint US/USSR biosatellite experiment, scheduled to be conducted in the last half of 1983, are discussed. These experiments will be conducted on board an unmanned Soviet spacecraft and will involve two restrained Rhesus monkeys and 10 pregnant rats, as well as a variety of small plant and radiation biology experiments. Three of the joint studies will use the monkeys for studies of biorhythms, calcium homeostasis, and the cardiovascular system. The fourth experiment will study rodent embryogenesis and neonatal behavior and development following in utero exposure to spaceflight. Specialized sensors and battery powered hardware have been designed, fabricated, and qualified for flight.

  18. Status of joint US/USSR experiments planned for the Cosmos '83 biosatellite mission

    NASA Technical Reports Server (NTRS)

    Souza, K. A.

    1982-01-01

    The plans and status of the fourth joint US/USSR biosatellite experiment, scheduled to be conducted in the last half of 1983, are discussed. These experiments will be conducted on board an unmanned Soviet spacecraft and will involve two restrained Rhesus monkeys and 10 pregnant rats, as well as a variety of small plant and radiation biology experiments. Three of the joint studies will use the monkeys for studies of biorhythms, calcium homeostasis, and the cardiovascular system. The fourth experiment will study rodent embryogenesis and neonatal behavior and development following in utero exposure to spaceflight. Specialized sensors and battery powered hardware have been designed, fabricated, and qualified for flight.

  19. Status of health and environmental research relative to direct coal liquefaction: 1976 to the present

    SciTech Connect

    Gray, R.H.; Cowser, K.E.

    1982-06-01

    This document describes the status of health and environmental research efforts, supported by the US Department of Energy (DOE), to assist in the development of environmentally acceptable coal liquefaction processes. Four major direct coal liquefaction processes are currently in (or have been investigated at) the pilot plant stage of development. Two solvent refined coal processes (SRC-I and -II), H-coal (a catalytic liquefaction process) and Exxon donor solvent (EDS). The Pacific Northwest Laboratory was assigned responsibility for evaluating SRC process materials and prepared comprehensive health and environmental effects research program plans for SRC-I and -II. A similar program plan was prepared for H-coal process materials by the Oak Ridge National Laboratory. A program has been developed for EDS process materials by Exxon Research and Engineering Co. The program includes short-term screening of coal-derived materials for potential health and ecological effects. Longer-term assays are used to evaluate materials considered most representative of potential commercial practice and with greatest potential for human exposure or release to the environment. Effects of process modification, control technologies and changing operational conditions on potential health and ecological effects are also being evaluated. These assessments are being conducted to assist in formulating cost-effective environmental research programs and to estimate health and environmental risks associated with a large-scale coal liquefaction industry. Significant results of DOE's health and environmental research efforts relative to coal liquefaction include the following: chemical characterization, health effects, ecological fate and effects, amelioration and risk assessment.

  20. Present status of radioactive waste management of Romanian Electricity Authority (RENEL)

    SciTech Connect

    Barariu, G.

    1994-12-31

    The paper presents the development program concerning management of radioactive wastes including nuclear spent fuel which has been elaborated to cover the main topics connected with all foresseeble nuclear power objectives from Romania.

  1. [Impact of present-day forms of organization of physical education on the health status of preschool children].

    PubMed

    Kuchma, V R; Vishnevskaia, T Iu; Makarova, A Iu

    2006-01-01

    During a natural hygienic experiment, the physical development, psychomotor activity, exercise performance, and readiness were evaluated in 6-year-old children, in whom physical education had been organized by routine and experimental programs, including health-improving swimming in the indoor pool of a preschool educational establishment. Exercises built up on the principle of plot-role playing games, by using the developing corrective exercises and psychological and pedagogical escort, were established to be highly effective. The proposed methods contribute to the timely harmonious development of a child, his movement characteristics, positively affect the neurofunctional status, by ensuring the optimum psychomotor development, and maintain a high exercise performance.

  2. Present Status And First Results of the Final Focus Beam Line at the KEK Accelerator Test Facility

    SciTech Connect

    Bambade, P.; Alabau Pons, M.; Amann, J.; Angal-Kalinin, D.; Apsimon, R.; Araki, S.; Aryshev, A.; Bai, S.; Bellomo, P.; Bett, D.; Blair, G.; Bolzon, B.; Boogert, S.; Boorman, G.; Burrows, P.N.; Christian, G.; Coe, P.; Constance, B.; Delahaye, Jean-Pierre; Deacon, L.; Elsen, E.; /DESY /Valencia U., IFIC /KEK, Tsukuba /Beijing, Inst. High Energy Phys. /Savoie U. /Fermilab /Ecole Polytechnique /KEK, Tsukuba /Kyungpook Natl. U. /KEK, Tsukuba /Pohang Accelerator Lab. /Kyoto U., Inst. Chem. Res. /Savoie U. /Daresbury /Tokyo U. /Royal Holloway, U. of London /Kyungpook Natl. U. /Pohang Accelerator Lab. /Tokyo U. /KEK, Tsukuba /SLAC /University Coll. London /KEK, Tsukuba /SLAC /Royal Holloway, U. of London /KEK, Tsukuba /Tokyo U. /SLAC /Tohoku U. /KEK, Tsukuba /Tokyo U. /Pohang Accelerator Lab. /Brookhaven /SLAC /Oxford U., JAI /SLAC /Orsay /KEK, Tsukuba /Oxford U., JAI /Orsay /Fermilab /Tohoku U. /Manchester U. /CERN /SLAC /Tokyo U. /KEK, Tsukuba /Oxford U., JAI /Hiroshima U. /KEK, Tsukuba /CERN /KEK, Tsukuba /Oxford U., JAI /Ecole Polytechnique /SLAC /Oxford U., JAI /Fermilab /SLAC /Liverpool U. /SLAC /Tokyo U. /SLAC /Tokyo U. /KEK, Tsukuba /SLAC /CERN

    2011-11-11

    ATF2 is a final-focus test beam line which aims to focus the low emittance beam from the ATF damping ring to a vertical size of about 37 nm and to demonstrate nanometer level beam stability. Several advanced beam diagnostics and feedback tools are used. In December 2008, construction and installation were completed and beam commissioning started, supported by an international team of Asian, European, and U.S. scientists. The present status and first results are described.

  3. Individuals with hematological malignancies before undergoing chemotherapy present oxidative stress parameters and acute phase proteins correlated with nutritional status.

    PubMed

    Camargo, Carolina de Quadros; Borges, Dayanne da Silva; de Oliveira, Paula Fernanda; Chagas, Thayz Rodrigues; Del Moral, Joanita Angela Gonzaga; Durigon, Giovanna Steffanello; Dias, Bruno Vieira; Vieira, André Guedes; Gaspareto, Patrick; Trindade, Erasmo Benício Santos de Moraes; Nunes, Everson Araújo

    2015-01-01

    Hematological malignancies present abnormal blood cells that may have altered functions. This study aimed to evaluate nutritional status, acute phase proteins, parameters of cell's functionality, and oxidative stress of patients with hematological malignancies, providing a representation of these variables at diagnosis, comparisons between leukemias and lymphomas and establishing correlations. Nutritional status, C-reactive protein (CRP), albumin, phagocytic capacity and superoxide anion production of mononuclear cells, lipid peroxidation and catalase activity in plasma were evaluated in 16 untreated subjects. Main diagnosis was acute leukemia (n = 9) and median body mass index (BMI) indicated overweight (25.6 kg/m(2)). Median albumin was below (3.2 g/dL) and CRP above (37.45 mg/L) the reference values. Albumin was inversely correlated with BMI (r = -0.53). Most patients were overweight before the beginning of treatment and had a high CRP/albumin ratio, which may indicate a nutrition inflammatory risk. BMI values correlated positively with lipid peroxidation and catalase activity. A strong correlation between catalase activity and lipid peroxidation was found (r = 0.75). Besides the elevated BMI, these patients also have elevated CRP values and unexpected relations between nutritional status and albumin, reinforcing the need for nutritional counseling during the course of chemotherapy, especially considering the correlations between oxidative stress parameters and nutritional status evidenced here.

  4. Status of the Polarized Nonlinear Inverse Compton Scattering Experiment at UCLA

    SciTech Connect

    Williams, O.; Doyuran, A.; England, R. J.; Rosenzweig, J. B.; Travish, G.; Joshi, C.; Tochitsky, S.

    2006-11-27

    An Inverse Compton Scattering (ICS) experiment investigating the polarized harmonic production in the nonlinear regime has begun which will utilize the existing terawatt CO2 laser system and 15 MeV photoinjector in the Neptune Laboratory at UCLA. A major motivation for a source of high brightness polarized x-rays is the production of polarized positrons for use in future linear collider experiments. We report on the experimental set-up and status.

  5. Present status of the electron linac as the injector for KSR

    NASA Astrophysics Data System (ADS)

    Sugimura, Takashi; Shirai, Toshiyuki; Tonguu, Hiromu; Iwashita, Yoshihisa; Noda, Akira; Inoue, Makoto

    1997-05-01

    At the Nuclear Science Research Facility, ICR, Kyoto Univ., an electron sto rage ring, KSR, is under construction for the research of the synchrotron ra diation light. It is the race track type with the circumference of 25 m and the maximum energy of 300 MeV. As an injector of the ring, an S-band electro n linac with the energy of 100 MeV was constructed in October, 1995, and the beam acceleration test has been performed. We measured the transverse emittance of the 100 MeV electron beam using a pr ofile monitor made of a fluorescent screen and quadrupole lenses. The horizo ntal and vertical ones are 0.44 π\\cdotmm\\cdotmrad and 1.3 π\\cdotmm \\cdotmrad, respectively. Now, the beam from the linac is used for the experiment of the parametric X- ray radiation from the silicon crystal under the condition of a low duty fac tor. Utilizing of the KSR as a stretcher is proposed to increase a duty fact or of the beam for the experiment.

  6. [The peculiar features of the psychosomatic status in the patients presenting with the spondylogenic and cochleovestibular disorders].

    PubMed

    Morozova, S V; Shempeleva, L E

    2017-01-01

    The objective of the present study was to elucidate the peculiar features of the psychosomatic status in the patients with chronic vertebrogenic and cochleovestibular disorders The psychosomatic status was evaluated in 117 patients at the age from 21 to 65 years presenting with these conditions using the psychometric tests based on the STAI questionnaire (the state-trait anxiety inventory) adapted for the determination of the level of reactive and personal anxiety. It was shown that the vestibular disorders, tympanophonia, and hearing impairment have a negative influence on the psychogenic status of the patients suffering from cochleovestibulopathy. As many as 92.3% of the patients were characterized by the high or moderately high level of reactive and personal anxiety. The depressive conditions of various severity were diagnosed in 29.1% of the patients. The correction of postural muscular disbalance made it possible to achieve the well apparent reduction of the manifestations of reactive anxiety without prescription of the pharmacotherapeutic treatment and thereby to increase the effectiveness of the management of the patients presenting with the vertebrogenic and cochleovestibular disorders.

  7. Relationship of Age, Marital Status, and Work Experience of Community College Nursing Students to Grades.

    ERIC Educational Resources Information Center

    Frerichs, Marian L.

    To investigate differences in academic success due to age (younger or older than age 23), marital status, and nursing experience, a three-way analysis of variance was performed on the grade point averages of 1,435 female nursing students enrolled in 22 Associate Degree Nursing (ADN) programs in Illinois. The sample, representing over 90 percent of…

  8. Intimate Partner Violence, Relationship Status, and Protective Orders: Does "Living in Sin" Entail a Different Experience?

    ERIC Educational Resources Information Center

    Shannon, Lisa; Logan, T. K.; Cole, Jennifer

    2007-01-01

    The legal status of women's intimate relationships may allow for different experiences with intimate partner violence (IPV) and the protections received from the criminal justice system. There has been limited research examining differences in IPV and protective orders for women in marital and cohabiting intimate relationships. This study examines…

  9. Reward Experience, Socioeconomic Status, and Sex: Exploring Parameters of the Overjustification Effect.

    ERIC Educational Resources Information Center

    Schilling, Deanna E.

    The overjustification hypothesis predicts decreased intrinsic motivation when persons are paid to perform an interesting task. The factors of reward experience, socioeconomic status (SES), and sex are examined while testing conflicting predictions of the hypothesis and reinforcement theory. Children from grade 1 at two public elementary schools…

  10. Intimate Partner Violence, Relationship Status, and Protective Orders: Does "Living in Sin" Entail a Different Experience?

    ERIC Educational Resources Information Center

    Shannon, Lisa; Logan, T. K.; Cole, Jennifer

    2007-01-01

    The legal status of women's intimate relationships may allow for different experiences with intimate partner violence (IPV) and the protections received from the criminal justice system. There has been limited research examining differences in IPV and protective orders for women in marital and cohabiting intimate relationships. This study examines…

  11. The Effect of Socio-Economic Status on Severity of Periocular Basal Cell Carcinoma at Presentation.

    PubMed

    Lim, Lik Thai; Agarwal, Pankaj K; Young, David; Ah-Kee, Elliott Yann; Diaper, Charles J M

    2015-01-01

    To evaluate the influence of socio-economic factors on size of periocular basal cell carcinoma at presentation. All periocular basal cell carcinoma cases receiving treatment from the oculoplastics team in South Glasgow Hospitals NHS Trust, Glasgow, between 1999 and 2009, were identified retrospectively. Information collected included demographic details of patients, side and site of lesions, type of lesions, and size of lesions. The size of lesion was defined as small for any dimension not exceeding 5 mm, medium for dimensions between 6 mm and 10 mm, and large for dimensions exceeding 11 mm. Home address was used to determine the Scottish Index of Multiple Deprivation rank. The demographics, size of lesion, and Scottish Index of Multiple Deprivation rank were investigated using the general linear regression modelling. Of the 67 cases, 24 were men and 43 were women. The mean age was 71.5 years. There were a total of 67 identified cases, of which 38 presented with small-size lesions, 24 with medium-size lesions, and 5 with large-size lesions. Scottish Index of Multiple Deprivation is related to the presenting incidence of basal cell carcinoma, with the lower ranks presenting more frequently. Socio-economic deprivation is associated with larger and more frequent presentation of periocular basal cell carcinoma. This highlights the importance of raising awareness among populations of the more deprived areas of the significance of lumps and bumps within the periocular regions.

  12. [The influence of general magnetic therapy on the psychological status of the patients presenting with osteoarthrosis].

    PubMed

    Degtiarev, V K; Aleksandrov, A V; Nenasheva, N V; Cherkashina, I V; Nikitin, M V

    2013-01-01

    The present study was designed to estimate the influence of general magnetic therapy on the psychical conditions of 151 patients presenting with degenerative joint diseases including osteoarthritis (OA). It was shown that the application of general magnetic therapy for the rehabilitative treatment of osteoarthrosis promotes the improvement of the psycho-emotional state of the patients. It is concluded that prescription of general magnetic therapy to the patients with OA suffering from serious psycho-emotional disorders brings about beneficial changes in their anxiety- and depression-related personality traits.

  13. Present status of plasma-wall interactions research and materials development activities in the US

    SciTech Connect

    Hirooka, Y.; Conn, R.W.

    1989-08-01

    It is well known in the fusion engineering community that the plasma confinement performance in magnetic fusion devices is strongly affected by edge-plasma interactions with surface components. These plasma-material interactions (PMI) include fuel particle recycling and impurity generation both during normal and off-normal operation. To understand and then to control PMI effects, considerable effort has been made, particularly over the last decade in US, supported by Department of Energy, Division of Development and Technology. Also, because plasma-facing components are generally expected to receive significant amount of heat due to plasma bombardment and run-away electrons, materials must tolerate high-heat fluxes (HHF). The HHF-component research has been conducted in parallel with PMI research. One strong motivation for these research activities is that DT-burning experiments are currently planned in the Tokamak Test Fusion Reactor (TFTR) in early 1990s. Several different but mutually complementary approaches have been taken in the PMI+HHF research. The first approach is to conduct PMI experiments using toroidal fusion devices such as TFTR. The second one is to simulate elemental processes involved in PMI using ion beams and electron beams, etc. The last one but not least is to use non-tokamak plasma facilities. Along with these laboratory activities, new materials have been developed and evaluated from the PMI+HHF point of view. In this paper, several major PMI+HHF research facilities in US and their activities are briefly reviewed. 21 refs., 10 figs., 2 tabs.

  14. The Status of Graphical Presentation in Interior/Architectural Design Education

    ERIC Educational Resources Information Center

    Gurel, Meltem O.; Basa, Inci

    2004-01-01

    This article argues that interior/architectural design education favours a dominance of final presentation over the design process in the studio environment, particularly in the evaluation of a project. It suggests that the appeal of design juries for pleasant drawings, which may shift the emphasis from the project itself to its representation,…

  15. Microwave Three-Wave Mixing Experiments for Chirality Determination: Current Status

    NASA Astrophysics Data System (ADS)

    Perez, Cristobal; Shubert, V. Alvin; Schmitz, David; Medcraft, Chris; Krin, Anna; Schnell, Melanie

    2015-06-01

    Microwave three-wave mixing experiments have been shown to provide a novel and sensitive way to generate and measure enantiomer-specific molecular signatures. The handedness of the sample can be obtained from the phase of the molecular free induction decay whereas the enantiomeric excess can be determined by the amplitude of the chiral signal. After the introduction of this technique by Patterson et al. remarkable improvements have been realized and experimental strategies for both absolute phase determination and enantiomeric excess have been presented. This technique has been also successfully implemented at higher microwave frequencies. Here we present the current status of this technique as well future directions and perspectives. This will be illustrated through our systematic study of chiral terpenes as well as preliminary results in molecular clusters. Patterson, D.; Schnell, M.; Doyle, J. M. Enantiomer-Specific Detection of Chiral Molecules via Microwave Spectroscopy. Nature 2013, 497, 475-477. Patterson, D.; Doyle, J. M. Sensitive Chiral Analysis via Microwave Three-Wave Mixing. Phys. Rev. Lett. 2013, 111, 023008. Shubert, V. A.; Schmitz, D.; Patterson, D.; Doyle, J. M.; Schnell, M. Identifying Enantiomers in Mixtures of Chiral Molecules with Broadband Microwave Spectroscopy. Angew. Chem. Int. Ed. 2014, 53, 1152-1155. Lobsiger, S.; Perez, C.; Evangelisti, L.; Lehmann, K. K.; Pate, B. H. Molecular Structure and Chirality Detection by Fourier Transform Microwave Spectroscopy. J. Phys. Chem. Lett. 2014, 6, 196-200.

  16. Group foraging sensitivity to predictable and unpredictable changes in food distribution: past experience or present circumstances?

    PubMed

    Bell, Kenneth E; Baum, William M

    2002-09-01

    The ideal free distribution theory (Fretwell & Lucas, 1970) predicts that the ratio of foragers at two patches will equal the ratio of food resources obtained at the two patches. The theory assumes that foragers have "perfect knowledge" of patch profitability and that patch choice maximizes fitness. How foragers assess patch profitability has been debated extensively. One assessment strategy may be the use of past experience with a patch. Under stable environmental conditions, this strategy enhances fitness. However, in a highly unpredictable environment, past experience may provide inaccurate information about current conditions. Thus, in a nonstable environment, a strategy that allows rapid adjustment to present circumstances may be more beneficial. Evidence for this type of strategy has been found in individual choice. In the present experiments, a flock of pigeons foraged at two patches for food items and demonstrated results similar to those found in individual choice. Experiment 1 utilized predictable and unpredictable sequences of resource ratios presented across days or within a single session. Current foraging decisions depended on past experience, but that dependence diminished when the current foraging environment became more unpredictable. Experiment 2 repeated Experiment I with a different flock of pigeons under more controlled circumstances in an indoor coop and produced similar results.

  17. Hypertensive encephalopathy presenting as status epilepticus in a three year old.

    PubMed

    Sanford, Erica F; Stein, John C

    2012-06-01

    Hypertensive encephalopathy is one of the few neurologic emergencies in which prompt diagnosis and treatment can prevent permanent neurological damage. This syndrome is rarely seen in children. To discuss the recognition of hypertensive encephalopathy as a cause of acute neurological changes in children. We present the case of a 3-year-old boy who presented to the Emergency Department with seizures due to hypertensive encephalopathy. A review of the literature on the subject follows the case report. Hypertensive encephalopathy is a rare cause of acute neurological changes in children that can cause permanent damage if not recognized early. This case illustrates the importance of considering this syndrome as a potential cause of neurological symptoms, especially as neuroimaging can initially be misleading. Copyright © 2012 Elsevier Inc. All rights reserved.

  18. Present status of the 129Xe comagnetometer development for neutron EDM measurement

    NASA Astrophysics Data System (ADS)

    Mihara, M.; Masuda, Y.; Matsuta, K.; Kawasaki, S.; Watanabe, Y.; Hatanaka, K.; Matsumiya, R.

    2016-12-01

    A 129Xe comagnetometer designed for the measurement of neutron electric dipole moment (nEDM) as precisely as 1 × 10-27 e cm is presented. Highly nuclear spin polarized 129Xe are introduced into an EDM cell where the 129Xe spin precession is detected by means of the two-photon transition. The geometric phase effect (GPE) which generates the false nEDM was quantitatively discussed and the systematic error of nEDM from the GPE was estimated considering the buffer-gas suppression due to Xe atomic collisions. Research and development are in progress to construct the 129Xe comagnetometer with a field sensitivity of 0.3 fT. At present, about 70 % nuclear spin polarized 129Xe atoms have been obtained in a spin exchange opitial pumping cell, that are in the process of being transferred into the EDM cell via a cold trap.

  19. Precise time technology for selected Air Force systems: Present status and future requirements

    NASA Technical Reports Server (NTRS)

    Yannoni, N. F.

    1981-01-01

    Precise time and time interval (PTTI) technology is becoming increasingly significant to Air Force operations as digital techniques find expanded utility in military missions. Timing has a key role in the function as well as in navigation. A survey of the PTTI needs of several Air Force systems is presented. Current technology supporting these needs was reviewed and new requirements are emphasized for systems as they transfer from initial development to final operational deployment.

  20. MOON for spectroscopic studies of double beta decays and the present status of the MOON-1 prototype detector

    NASA Astrophysics Data System (ADS)

    Nakamura, H.; Ejiri, H.; Fushimi, K.; Ichihara, K.; Matsuoka, K.; Nomachi, M.; Hazama, R.; Umehara, S.; Yoshida, S.; Ogama, T.; Sakiuchi, T.; Hai, V. H.; Sugaya, Y.; Moon Collaboration

    2006-05-01

    The MOON (Molybdenum Observatory Of Neutrinos) project, as an extension of ELEGANT V, aims at spectroscopic studies of double beta decays from 100Mo with a sensitivity of the Majorana neutrino mass around 30 meV. Measurements with good energy and position resolutions enable one to select true signals and to reject background ones. A prototype MOON detector (MOON Phase-1A) with 142 g 100Mo was built and is running at the Oto underground laboratory. The present report describes briefly the outline of the MOON project and the present status of MOON-1.

  1. Present Status of Single Pion Production in Neutrino-Nucleus Reactions

    NASA Astrophysics Data System (ADS)

    Alvarez-Ruso, L.; Hernández, E.; Nieves, J.; Vacas, M. J. Vicente

    Some of the recent progress in the physics of pion production induced by neutrinos on nucleons and nuclei is reviewed from a theoretical perspective. The importance of Watson's theorem to reconcile ANL and BNL data with the off-diagonal Goldberger-Treiman relation for the Δ(1232) is discussed. The disagreement between MiniBooNE data and theoretical calculations is presented in the light of the new MINERvA data. The coherent pion production data on 12C obtained by MINERvA are also compared to different microscopic and PCAC models.

  2. Status of health and environmental research relative to coal gasification 1976 to the present

    SciTech Connect

    Wilzbach, K.E.; Reilly, C.A. Jr.

    1982-10-01

    Health and environmental research relative to coal gasification conducted by Argonne National Laboratory, the Inhalation Toxicology Research Institute, and Oak Ridge National Laboratory under DOE sponsorship is summarized. The studies have focused on the chemical and toxicological characterization of materials from a range of process streams in five bench-scale, pilot-plant and industrial gasifiers. They also address ecological effects, industrial hygiene, environmental control technology performance, and risk assessment. Following an overview of coal gasification technology and related environmental concerns, integrated summaries of the studies and results in each area are presented and conclusions are drawn. Needed health and environmental research relative to coal gasification is identified.

  3. Status of barium studies in the present era of oncology: Are they a history?

    PubMed Central

    Mahajan, Abhishek; Desai, Subash; Sable, Nilesh Pandurang; Thakur, Meenakshi Haresh

    2016-01-01

    With the advent of the modern imaging technologies, the present era of oncology is seeing steady decline in requests for barium studies due to the many reasons. It is prudent to mention here, that, barium examinations cannot be made obsolete! Our aim to preserve the age old technique of barium studies not only to keep it going on but also for the betterment and appropriate management of the patient. Our goal is not to “save” barium studies simply to keep this technology alive, per se, but rather to preserve barium radiology for the quality in patient care. PMID:28144086

  4. Status of the Virginia Power/DOE Cooperative Cask Testing/Demonstration Program: A video presentation

    SciTech Connect

    McKinnon, M.A.; Creer, J.M. ); Collantes, C.E. . Richland Operations Office)

    1990-01-01

    This paper is documentation of a video presentation and provides a brief summary of the Virginia power/US Department of Energy Cooperative Cask Testing/Demonstration Program. The program consists of two phases. The first phase has been completed and involved the unlicensed performance testing (heat transfer and shielding) of three metal spent fuel storage casks at the federally owned Idaho National Engineering Laboratory. The second phase is ongoing and consists of licensed demonstrations of standard casks from two different vendors and of one or two enhanced capacity casks. 6 refs., 1 tab.

  5. Present and long-term pollution status of airborne copper in major urban environments

    NASA Astrophysics Data System (ADS)

    Kim, Ki-Hyun

    2014-09-01

    The concentrations of many harmful metals in air have been continuously decreasing around the world especially in North America and Western Europe, although deviations from such trend have been observed elsewhere such as East Asia. To help understand spatiotemporal factors governing the environmental behavior of hazardous metals, the concentrations of copper (Cu) in total suspended particulate (TSP) fractions were analyzed in the seven major cities in South Korea over a two decadal period (1991 through 2012). Unlike other metal species, there was no distinctive seasonal trend (e.g., spring/winter maximum and summer minimum) in the Cu levels in most South Korean cities. The long-term trend of Cu, if assessed by its annual mean values, recorded two contrasting trends for each decade: the earlier period (from 1991 to early 2000) is characterized by high variabilities with a maximum concentration of 243 ng m-3 (in 2003), while the later period showed an appreciable (several-fold) reduction to the latest (2012) available concentration level of 35.7 ng m-3. As such, the present Cu levels in Korea should approach those commonly seen in moderately clean urban environments elsewhere. The overall results suggest that South Korean regulatory efforts to control particulate matter (PM) emissions have greatly influenced the present Cu levels consistent with the observed temporal trends of airborne PM.

  6. Cobalamin and folate status in 6 to 35 months old children presenting with acute diarrhea in Bhaktapur, Nepal.

    PubMed

    Ulak, Manjeswori; Chandyo, Ram K; Adhikari, Ramesh K; Sharma, Pushpa R; Sommerfelt, Halvor; Refsum, Helga; Strand, Tor A

    2014-01-01

    Cobalamin and folate are essential micronutrients and are important in DNA and RNA synthesis, cell proliferation, growth, hematopoiesis, and cognitive function. However, data on cobalamin and folate status are lacking particularly from young children residing in low and middle income countries. To measure cobalamin and folate status and identifies their predictors among 6 to 35 months old children presenting with acute diarrhea. This was a cross-sectional study in 823 children presenting with acute diarrhea. We measured plasma cobalamin, folate, methylmalonic acid and total homocysteine who sought treatment for acute diarrhea between June 1998 and August 2000. The mean (SD) plasma concentrations of cobalamin, folate, total homocysteine and methylmalonic acid were 206 (124) pmol/L, 55 (32) nmol/L, 11.4 (5.6) µmol/L and 0.79 (1.2) µmol/L, respectively. The prevalence of low plasma cobalamin (<150 pmol/L) was 41% but less than 2% (15) children had low folate concentration (<10 nmol/L). Plasma homocysteine and methylmalonic acid concentrations were negatively associated with cobalamin concentration but not associated with folate status. The prevalence of cobalamin deficiency was higher in breastfed than non-breastfed children (44% vs 24%; p = <0.001). The prevalence of hyperhomocysteinemia (>10 µmol/L) and elevated methylmalonic acid (>0.28 µmol/L) were 73% and 52%, respectively. In the regression analyses, the plasma cobalamin concentration was positively associated with age, and introduction of animal or formula milk. Our study indicated that poor cobalamin status was common particularly among breastfed children. Folate deficiency was virtually none existent. Possible consequences of cobalamin deficiency in young children need to be explored.

  7. Cobalamin and Folate Status in 6 to 35 Months Old Children Presenting with Acute Diarrhea in Bhaktapur, Nepal

    PubMed Central

    Ulak, Manjeswori; Chandyo, Ram K.; Adhikari, Ramesh K.; Sharma, Pushpa R.; Sommerfelt, Halvor; Refsum, Helga; Strand, Tor A.

    2014-01-01

    Background Cobalamin and folate are essential micronutrients and are important in DNA and RNA synthesis, cell proliferation, growth, hematopoiesis, and cognitive function. However, data on cobalamin and folate status are lacking particularly from young children residing in low and middle income countries. Objective To measure cobalamin and folate status and identifies their predictors among 6 to 35 months old children presenting with acute diarrhea. Design This was a cross-sectional study in 823 children presenting with acute diarrhea. We measured plasma cobalamin, folate, methylmalonic acid and total homocysteine who sought treatment for acute diarrhea between June 1998 and August 2000. Results The mean (SD) plasma concentrations of cobalamin, folate, total homocysteine and methylmalonic acid were 206 (124) pmol/L, 55 (32) nmol/L, 11.4 (5.6) µmol/L and 0.79 (1.2) µmol/L, respectively. The prevalence of low plasma cobalamin (<150 pmol/L) was 41% but less than 2% (15) children had low folate concentration (<10 nmol/L). Plasma homocysteine and methylmalonic acid concentrations were negatively associated with cobalamin concentration but not associated with folate status. The prevalence of cobalamin deficiency was higher in breastfed than non-breastfed children (44% vs 24%; p = <0.001). The prevalence of hyperhomocysteinemia (>10 µmol/L) and elevated methylmalonic acid (>0.28 µmol/L) were 73% and 52%, respectively. In the regression analyses, the plasma cobalamin concentration was positively associated with age, and introduction of animal or formula milk. Conclusions Our study indicated that poor cobalamin status was common particularly among breastfed children. Folate deficiency was virtually none existent. Possible consequences of cobalamin deficiency in young children need to be explored. PMID:24594935

  8. Present status and future potential of enhancing bone healing using nanotechnology.

    PubMed

    Stylios, George; Wan, Taoyu; Giannoudis, Peter

    2007-03-01

    An overview of the current state of tissue engineering material systems used in bone healing is presented. A variety of fabrication processes have been developed that have resulted in porous implant substrates that can address unresolved clinical problems. The merits of these biomaterial systems are evaluated in the context of the mechanical properties and biomedical performances most suitable for bone healing. An optimal scaffold for bone tissue engineering applications should be biocompatible and act as a 3D template for in vitro and in vivo bone growth; in addition, its degradation products should be non-toxic and easily excreted by the body. To achieve these features, scaffolds must consist of an interconnected porous network of micro- and nanoscale to allow extensive body fluid transport through the pores, which will trigger bone ingrowth, cell migration, tissue ingrowth, and eventually vascularization.

  9. Waste biorefineries using filamentous ascomycetes fungi: Present status and future prospects.

    PubMed

    Ferreira, Jorge A; Mahboubi, Amir; Lennartsson, Patrik R; Taherzadeh, Mohammad J

    2016-09-01

    Filamentous ascomycetes fungi have had important roles in natural cycles, and are already used industrially for e.g. supplying of citric, gluconic and itaconic acids as well as many enzymes. Faster human activities result in higher consumption of our resources and producing more wastes. Therefore, these fungi can be explored to use their capabilities to convert back wastes to resources. The present paper reviews the capabilities of these fungi in growing on various residuals, producing lignocellulose-degrading enzymes and production of organic acids, ethanol, pigments, etc. Particular attention has been on Aspergillus, Fusarium, Neurospora and Monascus genera. Since various species are used for production of human food, their biomass can be considered for feed applications and so biomass compositional characteristics as well as aspects related to culture in bioreactor are also provided. The review has been further complemented with future research avenues. Copyright © 2016 The Authors. Published by Elsevier Ltd.. All rights reserved.

  10. Hashimoto Encephalopathy with an Unusual Presentation of Status Epilepticus Seizures: A Case Report

    PubMed Central

    NAZERI, Masoume; ABOLHASANI FOROUGHI, Amin; HEIDARI, Hora; SAJADIANFARD, Sarvin; EGHBALI, Tannaz; ARASTEH, Peyman

    2016-01-01

    A 33 yr old man, previously diagnosed with hypothyroidism, presented with decreased level of consciousness and generalized tonic-clonic (GTC) seizure to Namazi hospital, Shiraz, Iran, during April 2015. The patient later referred with another episode of seizure like attack for which he received phenytoin, carbamazepine and levothyroxine and was discharged. During his last admission, the patient was admitted with chief complaints of decreased consciousness and four GTC attacks. On admission, the patients had aphasia, ataxia, loss of verbal communication, eye contact and complete loss of obedience. Thyroid function tests showed low levels of T3 and T4 with high levels of thyroid stimulating hormone. Other blood tests were all either normal or slightly abnormal. Lumbar puncture and CSF analysis had a high titer of Anti-TPO antibodies. With high suspicion of Hashimoto encephalopathy, pulsed methyl prednisolone (10 mg) was administered, however the patient showed little improvement. Therefore, plasmaphresis was started, to which the patient showed dramatic response. PMID:27957468

  11. [Present status of gastrointestinal damage due to non-steroidal anti-inflammatory drugs (NSAIDs)].

    PubMed

    Inaba, Tomoki; Ishikawa, Shigenao; Miyoshi, Masatsugu; Kurahara, Koichi

    2013-06-01

    Non-steroidal anti-inflammatory drugs (NSAIDs) are roughly divided into a low-dose aspirin group used for primary and secondary prevention of cardiovascular events and non-aspirin NSAIDs used for treatment of bone and joint diseases. Both cause gastrointestinal damage directly or indirectly. In the present study, we reviewed gastrointestinal damage due to non-aspirin NSAIDs with respect to the esophagus, stomach/duodenum, small intestine and colon. Damage due to NSAIDs occurs in all digestive tracts and since the analgesic effect of NSIADs hides subjective symptoms, the symptoms are often not treated until they are advanced to a serious state. Further, patients receiving NSAIDs are mostly elderly and have complications so that the onset of the conditions is serious and prevention is important. It is necessary to investigate a method that is effective for preventing damage for all digestive tracts and the mechanisms of damage must be understood for this reason.

  12. The Archeomagnetic field in South America: Present status and perspectives (Invited)

    NASA Astrophysics Data System (ADS)

    Hartmann, G. A.; Trindade, R. I.; Gallet, Y.; Poletti, W.; Begnini, G. S.; Genevey, A.; Legoff, M.

    2013-12-01

    Geomagnetic field variations over decadal to millennial timescales can be determined from direct (i.e. observatory) and indirect (e.g. from archeological artifacts and volcanics) sources. Before the observatory era, the recovery of these variations is however still strongly penalized by the very uneven both geographical and temporal distributions of the available archeo/paleomagnetic dataset. In particular, the southern hemisphere contributes with only ~3% of the global archeomagnetic database. Moreover, most of these data present restrictions due to their poor experimental reliability and to the lack of good age control. Therefore, new intensity and directional data from the southern hemisphere are strongly requested for the next generation of archeomagnetic field models. In this presentation, we will report on intensity and inclination results obtained from different regions in Brazil. A collection of twenty-three site-mean archeointensity data were obtained by our team from architectural brick fragments dated to the past 500 years from Northeast and Southeast Brazil. This dataset was complemented by a series of new results from South Brazil. In addition, we also obtained inclination data, after reconstructing the firing position of the ancient bricks from modern analogs of historical brickyards. Thirteen site-mean inclination results dated to between 1790 AD and 1950 AD and five inclination results spanning the 1590-1920 AD time interval were so determined from Southeast and Northeast Brazil, respectively. Altogether, our data, which are geographically distributed over more than 20 degrees in latitude, allow us to discuss the large-scale influence in Brazil and South America of non-dipolar features of the geomagnetic field during the past few centuries.

  13. Erythropoietin assay: present status of methods, pitfalls, and results in polycythemic disorders.

    PubMed

    Popovic, W J; Adamson, J W

    1978-01-01

    Mammalian erythropoiesis is regulated primarily by the hormone erythropoietin (ESP). Studies of ESF have provided information about its biochemistry and its role in regulating hemoglobin synthesis. Such studies rely on assays for erythropoietic activity in biological fluid. The assay which has proven most valuable and is used most widely is based upon the incorporation of radioactive iron into newly-formed red cells of polycythemic mice. While this assay has gained wide acceptance, it is expensive, cumbersome, imprecise, and insensitive, capable of reliably detecting no less than 50 milliunits of erythropoietin. Improvements in assay techniques will require new methodology relying primarily on immunologic recognition for the determination of hormone activity. Currently under development and in experimental use are radioimmunoassays and a hemagglutination inhibition assay. While work has progressed in these areas, these assays are not of proven value at present and meaningful physiological correlations have not emerged from their use. Alternatively, assays for hormone activity using suspensions of hematopoietic cells and the measurement of incorporation of radioactive isotopes into hemoglobin have provided both improvement in sensitivity and precision. The disadvantage of these types of assays is that they are sensitive to factors other than ESF and may give misleading information, depending on whether the factors present stimulate or inhibit cellular proliferation and hemoglobin synthesis. While such techniques may provide a temporary solution to some problems associated with assaying ESF for purification or physiological studies, they are not the best answer to the overall problem of hormone detection and characterization. The most important contribution to this field will be the availability of large amounts of highly purified and well-characterized ESF.

  14. Present Status and Future Growth of Advanced Maintenance Technology and Strategy in US Manufacturing

    PubMed Central

    Jin, Xiaoning; Weiss, Brian A.; Siegel, David; Lee, Jay

    2016-01-01

    The goals of this paper are to 1) examine the current practices of diagnostics, prognostics, and maintenance employed by United States (U.S.) manufacturers to achieve productivity and quality targets and 2) to understand the present level of maintenance technologies and strategies that are being incorporated into these practices. A study is performed to contrast the impact of various industry-specific factors on the effectiveness and profitability of the implementation of prognostics and health management technologies, and maintenance strategies using both surveys and case studies on a sample of U.S. manufacturing firms ranging from small to mid-sized enterprises (SMEs) to large-sized manufacturing enterprises in various industries. The results obtained provide important insights on the different impacts of specific factors on the successful adoption of these technologies between SMEs and large manufacturing enterprises. The varying degrees of success with respect to current maintenance programs highlight the opportunity for larger manufacturers to improve maintenance practices and consider the use of advanced prognostics and health management (PHM) technology. This paper also provides the existing gaps, barriers, future trends, and roadmaps for manufacturing PHM technology and maintenance strategy. PMID:28058173

  15. Present Status and Future Growth of Advanced Maintenance Technology and Strategy in US Manufacturing.

    PubMed

    Jin, Xiaoning; Weiss, Brian A; Siegel, David; Lee, Jay

    2016-01-01

    The goals of this paper are to 1) examine the current practices of diagnostics, prognostics, and maintenance employed by United States (U.S.) manufacturers to achieve productivity and quality targets and 2) to understand the present level of maintenance technologies and strategies that are being incorporated into these practices. A study is performed to contrast the impact of various industry-specific factors on the effectiveness and profitability of the implementation of prognostics and health management technologies, and maintenance strategies using both surveys and case studies on a sample of U.S. manufacturing firms ranging from small to mid-sized enterprises (SMEs) to large-sized manufacturing enterprises in various industries. The results obtained provide important insights on the different impacts of specific factors on the successful adoption of these technologies between SMEs and large manufacturing enterprises. The varying degrees of success with respect to current maintenance programs highlight the opportunity for larger manufacturers to improve maintenance practices and consider the use of advanced prognostics and health management (PHM) technology. This paper also provides the existing gaps, barriers, future trends, and roadmaps for manufacturing PHM technology and maintenance strategy.

  16. Proton electromagnetic form factors: present status and future perspectives at PANDA

    NASA Astrophysics Data System (ADS)

    Tomasi-Gustafsson, E.

    2015-05-01

    Data and models on electromagnetic proton form factors are reviewed, highlighting the contribution foreseen by the PANDA collaboration. Electromagnetic hadron form factors contain essential information on the internal structure of hadrons. Precise and surprising data have been obtained at electron accelerators, applying the polarization method in electron-proton elastic scattering. At electron-positron colliders, using initial state radiation, BABAR measured proton time-like form factors in a wide time-like kinematical region and the BESIII collaboration will measure very precisely proton and neutron form factors in the threshold region. In the next future an antiproton beam with momentum up to 15 GeV/c will be available at FAIR (Darmstadt). Measurements of the reaction p̅ + p → e+ + e- by the PANDA collaboration will contribute to the individual determination of electric and magnetic form factors in the time-like region of momentum transfer squared, as well as to their first determination in the unphysical region (below the kinematical threshold), through the reaction p̅ + p → e+ + e- + π0. From the discussion on feasibility studies at PANDA, we focus on the consequences of such measurements in view of an unified description of form factors in the full kinematical region. We present models which have the necessary analytical requirements and apply to the data in the whole kinematical region.

  17. Adolescent Health: Present Status and Its Related Programmes in India. Are We in the Right Direction?

    PubMed Central

    Sivagurunathan, C; Umadevi, R.; Rama, R.

    2015-01-01

    Adolescence is a phase of rapid growth and development during which physical, physiological and behavioural changes occur. They constitute more than 1.2 billion worldwide, and about 21% of Indian population. Morbidity and mortality occurring in this age group is mostly due to preventable causes. Young and growing children have poor knowledge and lack of awareness about physical and psychological changes that occurs during adolescence and the ill health affecting them. Existing Adolescent health programmes focus on rendering services like immunization, health education for sexual and reproductive health, nutritional education and supplementation, anemia control measures and counseling. Adolescent health programmes are fragmentary at present and there is no comprehensive programme addressing all the needs of adolescents. Access and availability of health care services are severely limited. Lack of accurate information, absence of proper guidance, parent’s ignorance, lack of skills and insufficient services from health care delivery system are the major barriers. Interventions should focus on providing psychological and mental health services and behaviour change communication towards leading a healthy lifestyle, restricting advertisement related to junk food products, awareness creation about reproductive and sexual health, educating parents to prevent early marriage, teenage pregnancy and to counsel their children on nutrition and reproductive health. Universal coverage of Adolescent friendly clinics is highly recommended. To be cost effective, all health services addressing adolescent should come under single programme. This review is intended to create awareness among the stakeholders about the importance of strengthening adolescent health services in order to meet their felt needs. PMID:25964884

  18. The present status and future growth of maintenance in US manufacturing: results from a pilot survey.

    PubMed

    Jin, Xiaoning; Siegel, David; Weiss, Brian A; Gamel, Ellen; Wang, Wei; Lee, Jay; Ni, Jun

    A research study was conducted (1) to examine the practices employed by US manufacturers to achieve productivity goals and (2) to understand what level of intelligent maintenance technologies and strategies are being incorporated into these practices. This study found that the effectiveness and choice of maintenance strategy were strongly correlated to the size of the manufacturing enterprise; there were large differences in adoption of advanced maintenance practices and diagnostics and prognostics technologies between small and medium-sized enterprises (SMEs). Despite their greater adoption of maintenance practices and technologies, large manufacturing organizations have had only modest success with respect to diagnostics and prognostics and preventive maintenance projects. The varying degrees of success with respect to preventative maintenance programs highlight the opportunity for larger manufacturers to improve their maintenance practices and use of advanced prognostics and health management (PHM) technology. The future outlook for manufacturing PHM technology among the manufacturing organizations considered in this study was overwhelmingly positive; many manufacturing organizations have current and planned projects in this area. Given the current modest state of implementation and positive outlook for this technology, gaps, future trends, and roadmaps for manufacturing PHM and maintenance strategy are presented.

  19. The present status of high-T c superconducting terahertz emitters

    NASA Astrophysics Data System (ADS)

    Kashiwagi, T.; Kubo, H.; Sakamoto, K.; Yuasa, T.; Tanabe, Y.; Watanabe, C.; Tanaka, T.; Komori, Y.; Ota, R.; Kuwano, G.; Nakamura, K.; Katsuragawa, T.; Tsujimoto, M.; Yamamoto, T.; Yoshizaki, R.; Minami, H.; Kadowaki, K.; Klemm, R. A.

    2017-07-01

    A terahertz (THz) wave emitter using the stack of intrinsic Josephson junctions present in the high-T c superconductor Bi2Sr2CaCu2O8+δ (Bi2212) has been developed. By applying a dc voltage V across the stack, the ac-Josephson effect converts this to an ac-current that emits photons at the Josephson frequency proportional to V. The Bi2212 device also behaves as and electromagnetic (EM) cavity, so depending upon the shape of the Bi2212 crystal, when the Josephson frequency matches that of a cavity resonance, the emission power is enhanced. However, the EM radiation characteristics also strongly depend upon the effects of Joule self heating of the device. In order to alleviate this Joule heating problem, we fabricated three distinct stand-alone Bi2212 sandwich device shapes, each crystal being first covered with Au on its top and bottom, and then sandwiched between sapphire plates. From our comparative studies of the three devices, we obtained important clues that could help to increase the emission power up to ∼mW and the frequency range up to several THz, as necessary for many applications such as security screening, high speed communications, medical and biological sensing, and astronomical detection, etc.

  20. Present status of sensitive detector of reactor's antineutrinos using scintillating detectors

    NASA Astrophysics Data System (ADS)

    Fajt, L.; Belov, V.; Burešová, H.; Egorov, V. G.; Fomina, M.; Kuznetsov, A.; Mamedov, F.; Ponomarev, D.; Přidal, P.; Rozova, I.; Špavorová, M.; Štekl, I.; Zhitnikov, I.

    2015-08-01

    In 2011, the reanalysis of the reactor antineutrinos spectra led to the formulation of the Reactor Antineutrino Anomaly (RAA) [1], which indicates the discrepancy between measured and expected antineutrino fluxes on short baselines. This discrepancy appears to favor the existence of the fourth "sterile" neutrino with |Δm2|>1 eV2. To confirm or reject this hypothesis a high sensitive antineutrino detector located close to the reactor is required. In addition to that such a detector could be used to online monitor the isotopic composition of the reactor core and to prevent illegal production and removal of239Pu, which is the essential part of nuclear weapons. Detector DANSSino [2] already proved that even a compact antineutrino detector (˜ 1 m3) based on polystyrene is capable of antineutrino detection in the close vicinity of a reactor core (˜ 10 m) with signal to background ratio about one. As a common activity between JINR Dubna and IEAP CTU a new prototype of detector (called S3) has been proposed and is under construction. The construction design, selected results of Monte Carlo simulations and results of benchmark tests are presented.

  1. An overview of important ethnomedicinal herbs of Phyllanthus species: present status and future prospects.

    PubMed

    Sarin, Bharti; Verma, Nidhi; Martín, Juan Pedro; Mohanty, Aparajita

    2014-01-01

    The genus Phyllanthus consists of more than 1000 species, of which many are used as traditional medicines. The plant extracts have been used since ancient times, for treating hypertension, diabetes, hepatic, urinary, and sexual disorders, and other common ailments. Modern day scientific investigations have now confirmed pharmacognostic properties of Phyllanthus herbs. The phytochemicals attributing these medicinal properties have been identified in many of the Phyllanthus herbs. The morphologically similar herbs of Phyllanthus grow together and admixture of species during collection for manufacture of herbal medicines is quite common. Hence, along with pharmacognostic and phytochemical studies, appropriate protocols for correct identification of species are also important. As the use of these herbs as green medicines is becoming more popular, it is imperative to assess its genetic diversity and phylogenetic relatedness for future conservation strategies. This review is an attempt to present an overview of the existing studies on pharmacognostics, phytochemistry, species identification, and genetic diversity of Phyllanthus herbs and consequently (i) highlight areas where further research is needed and (ii) draw attention towards extending similar studies in underutilized but potentially important herbs such as P. maderaspatensis, P. kozhikodianus, P. rheedii, P. scabrifolius, and P. rotundifolius.

  2. Mid-Atlantic coast osprey population: Present numbers, productivity, pollutant contamination, and status

    USGS Publications Warehouse

    Henny, C.J.; Byrd, M.A.; Jacobs, J.A.; McLain, P.D.; Todd, M.R.; Halla, B.F.

    1977-01-01

    An estimated 233 + 16 (95% C.I.) pairs of ospreys (Pandion haliaetus) nested in coastal New Jersey, Delaware, Maryland, and Virginia in 1975. The present populations were considerably smaller than those reported for selected locations at the turn of the century in these four states. The New Jersey population has continued to decline during the last 25 years, although it showed some signs of improved production in 1974-75. The insecticide DDT was used intensively in New Jersey for mosquito control from about 1946 until 1966; its use in the other states was much less intensive, and of shorter duration. In a segment of the pelaware population of ospreys, production was normal and numbers increased slightly in 1970-75. Fragmentary information from Maryland suggests that the number of pairs nesting on duck blinds was about the same in 1958 and 1975. The population in coastal Virginia north of Cape Henry increased from 1970 to 1975. DDE residues in osprey eggs were highest in the areas showing the greatest population declines and the lowest production rates.

  3. Microscopic colitis: Current status, present and future challenges: statements of the European Microscopic Colitis Group.

    PubMed

    Münch, A; Aust, D; Bohr, J; Bonderup, O; Fernández Bañares, F; Hjortswang, H; Madisch, A; Munck, L K; Ström, M; Tysk, C; Miehlke, S

    2012-10-01

    Microscopic colitis (MC) is an inflammatory bowel disease presenting with chronic, non-bloody watery diarrhoea and few or no endoscopic abnormalities. The histological examination reveals mainly two subtypes of MC, lymphocytic or collagenous colitis. Despite the fact that the incidence in MC has been rising over the last decades, research has been sparse and our knowledge about MC remains limited. Specialists in the field have initiated the European Microscopic Colitis Group (EMCG) with the primary goal to create awareness on MC. The EMCG is furthermore a forum with the intention to promote clinical and basic research. In this article statements and comments are given that all members of the EMCG have considered being of importance for a better understanding of MC. The paper focuses on the newest updates in epidemiology, symptoms and diagnostic criteria, pathophysiology and highlights some unsolved problems. Moreover, a new treatment algorithm is proposed on the basis of new evidence from well-designed, randomized control trials. Copyright © 2012 European Crohn's and Colitis Organisation. Published by Elsevier B.V. All rights reserved.

  4. Present status of sensitive detector of reactor’s antineutrinos using scintillating detectors

    SciTech Connect

    Fajt, L.; Mamedov, F.; Přidal, P.; Špavorová, M.; Štekl, I.; Belov, V.; Egorov, V. G.; Fomina, M.; Kuznetsov, A.; Ponomarev, D.; Rozova, I.; Zhitnikov, I.; Burešová, H.

    2015-08-17

    In 2011, the reanalysis of the reactor antineutrinos spectra led to the formulation of the Reactor Antineutrino Anomaly (RAA) [1], which indicates the discrepancy between measured and expected antineutrino fluxes on short baselines. This discrepancy appears to favor the existence of the fourth “sterile” neutrino with |Δm{sup 2}|>1 eV{sup 2}. To confirm or reject this hypothesis a high sensitive antineutrino detector located close to the reactor is required. In addition to that such a detector could be used to online monitor the isotopic composition of the reactor core and to prevent illegal production and removal of{sup 239}Pu, which is the essential part of nuclear weapons. Detector DANSSino [2] already proved that even a compact antineutrino detector (∼ 1 m{sup 3}) based on polystyrene is capable of antineutrino detection in the close vicinity of a reactor core (∼ 10 m) with signal to background ratio about one. As a common activity between JINR Dubna and IEAP CTU a new prototype of detector (called S{sup 3}) has been proposed and is under construction. The construction design, selected results of Monte Carlo simulations and results of benchmark tests are presented.

  5. Adolescent health: present status and its related programmes in India. Are we in the right direction?

    PubMed

    Sivagurunathan, C; Umadevi, R; Rama, R; Gopalakrishnan, S

    2015-03-01

    Adolescence is a phase of rapid growth and development during which physical, physiological and behavioural changes occur. They constitute more than 1.2 billion worldwide, and about 21% of Indian population. Morbidity and mortality occurring in this age group is mostly due to preventable causes. Young and growing children have poor knowledge and lack of awareness about physical and psychological changes that occurs during adolescence and the ill health affecting them. Existing Adolescent health programmes focus on rendering services like immunization, health education for sexual and reproductive health, nutritional education and supplementation, anemia control measures and counseling. Adolescent health programmes are fragmentary at present and there is no comprehensive programme addressing all the needs of adolescents. Access and availability of health care services are severely limited. Lack of accurate information, absence of proper guidance, parent's ignorance, lack of skills and insufficient services from health care delivery system are the major barriers. Interventions should focus on providing psychological and mental health services and behaviour change communication towards leading a healthy lifestyle, restricting advertisement related to junk food products, awareness creation about reproductive and sexual health, educating parents to prevent early marriage, teenage pregnancy and to counsel their children on nutrition and reproductive health. Universal coverage of Adolescent friendly clinics is highly recommended. To be cost effective, all health services addressing adolescent should come under single programme. This review is intended to create awareness among the stakeholders about the importance of strengthening adolescent health services in order to meet their felt needs.

  6. The present status and future growth of maintenance in US manufacturing: results from a pilot survey

    PubMed Central

    Jin, Xiaoning; Siegel, David; Weiss, Brian A.; Gamel, Ellen; Wang, Wei; Lee, Jay; Ni, Jun

    2016-01-01

    A research study was conducted (1) to examine the practices employed by US manufacturers to achieve productivity goals and (2) to understand what level of intelligent maintenance technologies and strategies are being incorporated into these practices. This study found that the effectiveness and choice of maintenance strategy were strongly correlated to the size of the manufacturing enterprise; there were large differences in adoption of advanced maintenance practices and diagnostics and prognostics technologies between small and medium-sized enterprises (SMEs). Despite their greater adoption of maintenance practices and technologies, large manufacturing organizations have had only modest success with respect to diagnostics and prognostics and preventive maintenance projects. The varying degrees of success with respect to preventative maintenance programs highlight the opportunity for larger manufacturers to improve their maintenance practices and use of advanced prognostics and health management (PHM) technology. The future outlook for manufacturing PHM technology among the manufacturing organizations considered in this study was overwhelmingly positive; many manufacturing organizations have current and planned projects in this area. Given the current modest state of implementation and positive outlook for this technology, gaps, future trends, and roadmaps for manufacturing PHM and maintenance strategy are presented. PMID:27525253

  7. Probiotics and Prebiotics: Present Status and Future Perspectives on Metabolic Disorders

    PubMed Central

    Yoo, Ji Youn; Kim, Sung Soo

    2016-01-01

    Metabolic disorders, including type 2 diabetes (T2DM) and cardiovascular disease (CVD), present an increasing public health concern and can significantly undermine an individual’s quality of life. The relative risk of CVD, the primary cause of death in T2DM patients, is two to four times higher in people with T2DM compared with those who are non-diabetic. The prevalence of metabolic disorders has been associated with dynamic changes in dietary macronutrient intake and lifestyle changes over recent decades. Recently, the scientific community has considered alteration in gut microbiota composition to constitute one of the most probable factors in the development of metabolic disorders. The altered gut microbiota composition is strongly conducive to increased adiposity, β-cell dysfunction, metabolic endotoxemia, systemic inflammation, and oxidative stress. Probiotics and prebiotics can ameliorate T2DM and CVD through improvement of gut microbiota, which in turn leads to insulin-signaling stimulation and cholesterol-lowering effects. We analyze the currently available data to ascertain further potential benefits and limitations of probiotics and prebiotics in the treatment of metabolic disorders, including T2DM, CVD, and other disease (obesity). The current paper explores the relevant contemporary scientific literature to assist in the derivation of a general perspective of this broad area. PMID:26999199

  8. An Overview of Important Ethnomedicinal Herbs of Phyllanthus Species: Present Status and Future Prospects

    PubMed Central

    Sarin, Bharti; Martín, Juan Pedro; Mohanty, Aparajita

    2014-01-01

    The genus Phyllanthus consists of more than 1000 species, of which many are used as traditional medicines. The plant extracts have been used since ancient times, for treating hypertension, diabetes, hepatic, urinary, and sexual disorders, and other common ailments. Modern day scientific investigations have now confirmed pharmacognostic properties of Phyllanthus herbs. The phytochemicals attributing these medicinal properties have been identified in many of the Phyllanthus herbs. The morphologically similar herbs of Phyllanthus grow together and admixture of species during collection for manufacture of herbal medicines is quite common. Hence, along with pharmacognostic and phytochemical studies, appropriate protocols for correct identification of species are also important. As the use of these herbs as green medicines is becoming more popular, it is imperative to assess its genetic diversity and phylogenetic relatedness for future conservation strategies. This review is an attempt to present an overview of the existing studies on pharmacognostics, phytochemistry, species identification, and genetic diversity of Phyllanthus herbs and consequently (i) highlight areas where further research is needed and (ii) draw attention towards extending similar studies in underutilized but potentially important herbs such as P. maderaspatensis, P. kozhikodianus, P. rheedii, P. scabrifolius, and P. rotundifolius. PMID:24672382

  9. Present status and strategic plan for the stable isotope reference materials at the IAEA.

    NASA Astrophysics Data System (ADS)

    Assonov, Sergey; Groening, Manfred

    2016-04-01

    The presentation will give the overview of the stable isotope reference materials (SI-RMs) under distribution by the IAEA, its stable isotope laboratory and capacities related to material testing & production as well as future plans. Historically, most of the IAEA reference materials were produced and made available via collaborations with expert stable isotope laboratories worldwide. The IAEA plans include several directions as follows: • Maintaining the scale-defining SI-RMs at the highest level and introducing adequate replacements when needed; • Monitoring existing SI-RMs for any potential alteration(s) and of isotopic values assigned; • Identifying and then addressing the needs for new SI-RMs, with the priority to address the most critical applications (environmental and climate related applications, human health, food safety studies) and newly emerging analytical isotope techniques; • Performing all measurements aimed for characterisation of new SI-RMs and the corresponding uncertainty evaluation in accordance to the latest metrological concepts; • Promoting metrological approaches on traceability and uncertainty evaluation in every day practice of stable isotope measurements; • Expanding the IAEA capacities for SI-RMs by (i) planning a renewed laboratory at IAEA; (ii) enlarging collaboration with expert laboratories aimed to help IAEA in production and characterisation of new SI-RMs. These major directions will help to address the increasing demand for Stable Isotope Reference Materials.

  10. Probiotics and Prebiotics: Present Status and Future Perspectives on Metabolic Disorders.

    PubMed

    Yoo, Ji Youn; Kim, Sung Soo

    2016-03-18

    Metabolic disorders, including type 2 diabetes (T2DM) and cardiovascular disease (CVD), present an increasing public health concern and can significantly undermine an individual's quality of life. The relative risk of CVD, the primary cause of death in T2DM patients, is two to four times higher in people with T2DM compared with those who are non-diabetic. The prevalence of metabolic disorders has been associated with dynamic changes in dietary macronutrient intake and lifestyle changes over recent decades. Recently, the scientific community has considered alteration in gut microbiota composition to constitute one of the most probable factors in the development of metabolic disorders. The altered gut microbiota composition is strongly conducive to increased adiposity, β-cell dysfunction, metabolic endotoxemia, systemic inflammation, and oxidative stress. Probiotics and prebiotics can ameliorate T2DM and CVD through improvement of gut microbiota, which in turn leads to insulin-signaling stimulation and cholesterol-lowering effects. We analyze the currently available data to ascertain further potential benefits and limitations of probiotics and prebiotics in the treatment of metabolic disorders, including T2DM, CVD, and other disease (obesity). The current paper explores the relevant contemporary scientific literature to assist in the derivation of a general perspective of this broad area.

  11. Embryonic stem cells in companion animals (horses, dogs and cats): present status and future prospects.

    PubMed

    Tecirlioglu, R Tayfur; Trounson, Alan O

    2007-01-01

    Reproductive technologies have made impressive advances since the 1950s owing to the development of new and innovative technologies. Most of these advances were driven largely by commercial opportunities and the potential improvement of farm livestock production and human health. Companion animals live long and healthy lives and the greatest expense for pet owners are services related to veterinary care and healthcare products. The recent development of embryonic stem cell and nuclear transfer technology in primates and mice has enabled the production of individual specific embryonic stem cell lines in a number of species for potential cell-replacement therapy. Stem cell technology is a fast-developing area in companion animals because many of the diseases and musculoskeletal injuries of cats, dogs and horses are similar to those in humans. Nuclear transfer-derived stem cells may also be selected and directed into differentiation pathways leading to the production of specific cell types, tissues and, eventually, even organs for research and transplantaton. Furthermore, investigations into the treatment of inherited or acquired pathologies have been performed mainly in mice. However, mouse models do not always faithfully represent the human disease. Naturally occurring diseases in companion animals can be more ideal as disease models of human genetic and acquired diseases and could help to define the potential therapeutic efficiency and safety of stem cell therapies. In the present review, we focus on the economic implications of companion animals in society, as well as recent biotechnological progress that has been made in horse, dog and cat embryonic stem cell derivation.

  12. History, Present Status & Future of Site Testing at Dôme C

    NASA Astrophysics Data System (ADS)

    Vernin, J.; Agabi, A.; Aristidi, E.; Azouit, M.; Chadid, M.; Fossat, E.; Sadibekova, T.; Trinquet, H.; Ziad, A.

    Hereafter we give a brief history of our contribution to astronomical site testing in Antarctica, at least for the high angular resolution in the visible range. The decision to undertake the first site testing at South Pole began one year after a congress organized by French Académie des Sciences, in year 1992. Indeed, in 1993 a meeting took place in Chicago with the participation of Peter Gillingham, Al Harper and Jean Vernin where each one took the respective responsibility of 1) giving a PhD student, 2) the South Pole infrastructure and 3) the relevant instruments. During winter 1995, thanks to a mast equipped with micro-thermal sensors, we demonstrated (Marks et al., 1996, A&AS, 118, 1) that the first 30 m of the surface layer was disrupted by strong optical turbulence. Then, the year after, 15 balloons equipped with micro-thermal probes were successfully launched from South Pole. Marks et al. (1999, A&AS, 134, 161) shown that most of the optical turbulence at South Pole was concentrated within a layer 200 m thick above the ice level. From this study, it becomes clear that the noticeable katabatic wind present at South Pole was generating this huge surface layer and that is why we oriented our astronomical site characterization toward Dôme C. Our first summer seeing estimations began in 2000, which demonstrated (Aristidi et al., 2003, A&AS, 406, L19 & Aristidi et al., 2005, A&A, 444, 651) that, as expected, the surface wind was much less than at South Pole, and, as a matter of fact, the seeing was much better, and was even exceptional during the four hours of the afternoon where a seeing of less than 0.5 arcsec was measured. In 2005, the Concordia base was first open during the polar night, and one of us, A. Agabi was able to launch 41 balloons equipped with micro-thermal sensors. A differential image motion monitor (DIMM) was also setup with success. At mid winter, Agabi et al. (2006, PASP, 118, 344) showed that most of the optical turbulence came from the

  13. Status-Relevant Experiences and Conspicuous Consumption - the Moderating Role of Prenatal Androgen Exposure.

    PubMed

    Cornelissen, Gert; Palacios-Fenech, Javier

    2016-09-20

    In this paper we study consumers' interest in acquiring and displaying expensive luxury products. Based on recent insights in consumer psychology, which build on developments in evolutionary biology, we consider luxury products as "costly signals": wasteful and costly goods, whose purpose is to communicate one's biological fitness, and social status, to others. In line with previous research, we show that experiences that trigger mate attraction goals (Study 1: Exposure to others in bathing outfit) or status display goals (Study 2: Experiencing a vicarious victory of one's favorite sports team) can increase people's interest in luxury products. However, we demonstrate that some individuals are predictably more responsive to those experiences than others. We used a physiological measure (the proportion of the length of the index finger and ring finger of the right hand, 2D:4D) as a proxy for individual differences in exposure to prenatal androgens (i.e., testosterone). This measure has been related to dominant and competitive behavior later in life. We predict and find that individuals with a low 2D:4D (i.e., high exposure to prenatal androgens) were more responsive to the status-relevant experiences: they became more interested in luxury goods after these experiences. This was not the case for high 2D:4D individuals.

  14. Status of the proton and electron transfer lines for the AWAKE Experiment at CERN

    NASA Astrophysics Data System (ADS)

    Schmidt, J. S.; Bauche, J.; Biskup, B.; Bracco, C.; Doebert, S.; Goddard, B.; Gschwendtner, E.; Jensen, L. K.; Jones, O. R.; Mazzoni, S.; Meddahi, M.; Pepitone, K.; Petrenko, A.; Velotti, F. M.; Vorozhtsov, A.

    2016-09-01

    The AWAKE project at CERN is planned to study proton driven plasma wakefield acceleration with an externally injected electron beam. Therefore two transfer lines are being designed in order to provide the proton beam from the SPS and the electron beam from an RF gun to the plasma cell. The commissioning of the proton line will take place in 2016 for the first phase of the experiment, which is focused on the self-modulation of a 12 cm long proton bunch in the plasma. The electron line will be added for the second phase of AWAKE in 2017, when the wakefield will be probed with an electron beam of 10-20 MeV/c. The challenge for these transfer lines lies in the parallel operation of the proton, electron and laser beam used to ionize the plasma and seed the self-modulation. These beams, of different characteristics, need to be synchronized and positioned for optimized injection conditions into the wakefield. This task requires great flexibility in the transfer line optics. The status of these designs will be presented in this paper.

  15. Economic evaluation of the prevention and treatment of breast cancer--present status and open issues.

    PubMed

    Imai, Hirohisa; Kuroi, Katsumasa; Ohsumi, Shozo; Ono, Michikazu; Shimozuma, Kojiro

    2007-01-01

    More effective methods of preventing and treating breast cancer are being sought by clinicians every day, and new drugs and interventions for overcoming this cancer are being energetically evaluated. At present, there are wide treatment options and many different objectives for breast cancer. These circumstances led us to seek information about the relative costs of the different medical options for the prevention and treatment of breast cancer and to try to ascertain whether one course of action is more efficient than other courses. Economic evaluation of healthcare is indispensable for selection of the best alternatives among medical interventions which are becoming more diverse day after day. The total medical expenditure continues to rise each year and some sort of evaluation from an objective and external viewpoint is required to provide the information with which to suppress this rise. This paper surveys the three major reports published on this topic to date, for the purpose of demonstrating the importance and necessity of performing an economic analysis of the treatment and prevention of breast cancer. The three reports to be surveyed pertain to: (1) cost-effectiveness analysis of adjuvant chemotherapy for patients with lymph node negative breast cancer, (2) cost utility analysis of first-line hormonal therapy in advanced breast cancer, namely comparison of two aromatase inhibitors to tamoxifen, and (3) cost-effectiveness analysis of tamoxifen in the prevention of breast cancer. In addition, this paper discusses the advantages, limitations and perspective for the future of the economic evaluation of healthcare for breast cancer. (1) The authors concluded that if the average risk of all women of undergoing recurrence after this therapy is assumed to be 4% per year, adjuvant chemotherapy is definitely of benefit for node-negative, estrogen receptor-negative breast cancer patients. They additionally stated that this benefit decreases markedly if the changes in

  16. Helical Undulator Based Production of Polarized Positrons and Status of the E166 Experiment

    NASA Astrophysics Data System (ADS)

    Laihem, K.

    2005-08-01

    This paper describes the status of the E166 experiment. The experiment is dedicated to test the helical-undulator-based polarized positron source for the international linear collider. The physics motivation for having both electrons and positrons polarized in collision is crucial and a demonstration experiment for the undulator-based production of polarized positrons is summarized. The E166 experiment uses a 1 meter long helical undulator in the 50 GeV Final Focus Test Beam at SLAC to provide MeV photons with circular polarization. These photons are then converted in a thin (0.5 radiation length X0) target into positrons (and electrons) with about 50% degree of longitudinal polarization. In this experiment, the polarization of both photons and positrons is measured simultaneously using photon transmission polarimetry.

  17. Mere experience of low subjective socioeconomic status stimulates appetite and food intake.

    PubMed

    Cheon, Bobby K; Hong, Ying-Yi

    2017-01-03

    Among social animals, subordinate status or low social rank is associated with increased caloric intake and weight gain. This may reflect an adaptive behavioral pattern that promotes acquisition of caloric resources to compensate for low social resources that may otherwise serve as a buffer against environmental demands. Similarly, diet-related health risks like obesity and diabetes are disproportionately more prevalent among people of low socioeconomic resources. Whereas this relationship may be associated with reduced financial and material resources to support healthier lifestyles, it remains unclear whether the subjective experience of low socioeconomic status may alone be sufficient to stimulate consumption of greater calories. Here we show that the mere feeling of lower socioeconomic status relative to others stimulates appetite and food intake. Across four studies, we found that participants who were experimentally induced to feel low (vs. high or neutral) socioeconomic status subsequently exhibited greater automatic preferences for high-calorie foods (e.g., pizza, hamburgers), as well as intake of greater calories from snack and meal contexts. Moreover, these results were observed even in the absence of differences in access to financial resources. Our results demonstrate that among humans, the experience of low social class may contribute to preferences and behaviors that risk excess energy intake. These findings suggest that psychological and physiological systems regulating appetite may also be sensitive to subjective feelings of deprivation for critical nonfood resources (e.g., social standing). Importantly, efforts to mitigate the socioeconomic gradient in obesity may also need to address the psychological experience of low social status.

  18. The effects of age and experience on memory for visually presented music.

    PubMed

    Meinz, E J; Salthouse, T A

    1998-01-01

    Increased age is often associated with lower levels of performance in tests of memory for spatial information. The primary question in the current study was whether this relationship could be moderated as a function of one's relevant experience and/or knowledge. Stimulus materials consisted of short (7-11 note), visually presented musical melodies and structurally equivalent nonmusical stimuli. Participants (N = 128) were recruited from a wide range of age and experience levels. Although there were strong main effects of age and experience on memory for music, there was no evidence that the age-related differences in memory for these stimuli were smaller for individuals with moderate to large amounts of experience with music.

  19. Transition without status: the experience of youth leaving care without Canadian citizenship.

    PubMed

    Hare, Francis G

    2007-01-01

    The origins of the project reviewed in this chapter lie in discussions with a Toronto agency that has a mandate to serve youth in transition from the care of the Children's Aid Society. This service system, also known in various jurisdictions as child welfare, child protection, or foster care, includes among its clients children and youth who are living in Canada without legal Canadian status. This could have occurred because the child arrived alone and was taken into care on arrival or because the child arrived with a family but was taken into care before status was obtained. While the child is in care, this lack of status is relatively inconsequential in that health, educational, and other services are provided through the Children's Aid Societies. Once the transition is made from care, the youth's vulnerability increases dramatically if legal status has not been obtained. Health services, educational opportunities, and legal employment are often beyond reach, and the youth is subject to deportation. The major objectives of the project were to explore the national and international literature to discover the dimensions of this issue, interview youth and service providers to gain insight into their experience, and discover ways to minimize the number of youth who leave care without having obtained status.

  20. Influence of Menopausal Status on the Symptom Experience of Women Before Breast Cancer Surgery.

    PubMed

    Mazor, Melissa; Cataldo, Janine K; Lee, Kathryn; Dhruva, Anand; Paul, Steven M; Smoot, Betty J; Dunn, Laura B; Levine, Jon D; Mastick, Judy; Conley, Yvette P; Miaskowski, Christine

    2017-09-23

    Breast cancer treatments can change women's hormonal milieu and alter their symptom experience. Little is known about associations between menopausal status and menopausal symptoms in women with breast cancer before surgery. The purpose of this study was to evaluate for differences in occurrence, severity, and distress of symptoms between premenopausal and postmenopausal women before breast cancer surgery. A total of 312 women with breast cancer completed the Menopausal Symptoms Scale, a self-report measure that evaluated the occurrence, severity, and distress of 46 common symptoms associated with menopause. Regression analyses were used to evaluate for between-group differences in these symptoms. Of the 312 patients enrolled, 37.4% (n = 116) were premenopausal, and 62.6% (n = 196) were postmenopausal. In the multivariate analysis that adjusted for 7 covariates, premenopausal patients reported higher occurrence rates for urinary frequency (P = .006) and reported lower occurrence rates for joint pain/stiffness (P = .011), difficulty falling asleep (P = .025), and vaginal dryness (P = .002). A significant interaction was found between age and menopausal status for hot flashes (P = .002), wake during the night (P = .025), and headache (P = .040). Regardless of menopausal status, women reported high occurrence rates for several menopausal symptoms. Associations between some symptom occurrence rates and menopausal status depended on the patients' age. As part of a preoperative symptom assessment, clinicians need to consider a woman's menopausal status and salient demographic and clinical characteristics. The identification of women with a higher symptom burden will assist with more effective management.

  1. Heritage Learners of Mexican Descent in Higher Education: A Qualitative Study of Past and Present Experiences

    ERIC Educational Resources Information Center

    Gignoux, Alicia

    2009-01-01

    This is a qualitative interpretive study that explores the past and present experiences of heritage learners (HLs) of Mexican descent who were studying or had recently studied advanced Spanish in institutions of higher education. All of the participants had been exposed to Spanish in the home and began their studies in elementary or middle school…

  2. Heritage Learners of Mexican Descent in Higher Education: A Qualitative Study of Past and Present Experiences

    ERIC Educational Resources Information Center

    Gignoux, Alicia

    2009-01-01

    This is a qualitative interpretive study that explores the past and present experiences of heritage learners (HLs) of Mexican descent who were studying or had recently studied advanced Spanish in institutions of higher education. All of the participants had been exposed to Spanish in the home and began their studies in elementary or middle school…

  3. Can Decision Biases Improve Insurance Outcomes? An Experiment on Status Quo Bias in Health Insurance Choice

    PubMed Central

    Krieger, Miriam; Felder, Stefan

    2013-01-01

    Rather than conforming to the assumption of perfect rationality in neoclassical economic theory, decision behavior has been shown to display a host of systematic biases. Properly understood, these patterns can be instrumentalized to improve outcomes in the public realm. We conducted a laboratory experiment to study whether decisions over health insurance policies are subject to status quo bias and, if so, whether experience mitigates this framing effect. Choices in two treatment groups with status quo defaults are compared to choices in a neutrally framed control group. A two-step design features sorting of subjects into the groups, allowing us to control for selection effects due to risk preferences. The results confirm the presence of a status quo bias in consumer choices over health insurance policies. However, this effect of the default framing does not persist as subjects repeat this decision in later periods of the experiment. Our results have implications for health care policy, for example suggesting that the use of non-binding defaults in health insurance can facilitate the spread of co-insurance policies and thereby help contain health care expenditure. PMID:23783222

  4. Can decision biases improve insurance outcomes? An experiment on status quo bias in health insurance choice.

    PubMed

    Krieger, Miriam; Felder, Stefan

    2013-06-19

    Rather than conforming to the assumption of perfect rationality in neoclassical economic theory, decision behavior has been shown to display a host of systematic biases. Properly understood, these patterns can be instrumentalized to improve outcomes in the public realm. We conducted a laboratory experiment to study whether decisions over health insurance policies are subject to status quo bias and, if so, whether experience mitigates this framing effect. Choices in two treatment groups with status quo defaults are compared to choices in a neutrally framed control group. A two-step design features sorting of subjects into the groups, allowing us to control for selection effects due to risk preferences. The results confirm the presence of a status quo bias in consumer choices over health insurance policies. However, this effect of the default framing does not persist as subjects repeat this decision in later periods of the experiment. Our results have implications for health care policy, for example suggesting that the use of non-binding defaults in health insurance can facilitate the spread of co-insurance policies and thereby help contain health care expenditure.

  5. Progressive outer retinal necrosis syndrome: a comprehensive review of its clinical presentation, relationship to immune system status, and management.

    PubMed

    Austin

    2000-12-01

    Progressive outer retinal necrosis (PORN) syndrome is a form of the Varicella zoster virus (VZV) chorioretinitis found almost exclusively in people with the acquired immunodeficiency syndrome (AIDS). This destructive infection has an extremely rapid course that may lead to no light perception in affected eyes within days or weeks. Attempts at its treatment have had limited success. Rhegmatogenous retinal detachments often occur after the development of atrophic retinal holes, and silicone oil temponade has been found to be the most successful reattachment procedure. Unfortunately, cataract formation is common after such surgery. PORN needs to be differentiated from acute retinal necrosis (ARN) syndrome, a necrotizing retinitis that can also be caused by VZV. PORN and ARN are found at opposite ends of the spectrum of necrotizing herpetic retinopathies (NHR), where its clinical presentation depends upon immune system status. After a brief case presentation, the distinguishing clinical characteristics of PORN, its differentiation from ARN, attempts at its treatment, the role of the immune system status on its clinical appearance and treatment, and management of complications such as retinal detachment and subsequent cataracts are discussed.

  6. Status of Animal Experiments on International Space Station, and Animal Care Activities in Japan

    NASA Astrophysics Data System (ADS)

    Izumi, Ryutaro; Ishioka, Noriaki; Yumoto, Akane; Ito, Isao; Shirakawa, Masaki

    We would like to introduce animal experiments status on International Space Station (ISS) of Japan. Aquatic Habitat (AQH) was launched at 2012 July, by H-II Transfer Vehicle (HTV, ‘Kounotori’) from Tanegashima island in Japan, which could house small fish (Medaka, or Zebrafish) at most three months. First experiment using AQH was carried out for two months from Oct. 26, 2012, and second experiment would start from February, 2014. Mice housing hardware is now under development. For animal care activities, current topic in Japan is self-estimation for animal experiment status by each institute, and to open the result for public. JAXA conducted self-estimation of fiscal year 2011 (from 2011 April until 2012 March) for the first time, and would continue every fiscal year. JAXA already have its own animal care regulation, under animal care law and policy in Japan, and also referred COSPAR animal care guideline. And this year, JAXA made handbook for animal experiments in space (only Japanese).

  7. Experiments with Liquid Metal Walls: Status of the Lithium Tokamak Experiment

    SciTech Connect

    Kaita, Robert; Boyle, Dennis; Gray, Timothy; Granstedt, Erik; Hammett, Gregory; Jacobson, Craig M; Jones, Andrew; Kozub, Thomas; Kugel, Henry; Leblanc, Benoit; Logan, Nicholas; Lucia, Matthew; Lundberg, Daniel; Majeski, Richard; Mansfield, Dennis; Menard, Jonathan; Spaleta, Jeffrey; Strickler, Trevor; Timberlak, John

    2010-02-16

    Liquid metal walls have been proposed to address the first wall challenge for fusion reactors. The Lithium Tokamak Experiment (LTX) at the Princeton Plasma Physics Laboratory (PPPL) is the first magnetic confinement device to have liquid metal plasma-facing components (PFC's) that encloses virtually the entire plasma. In the Current Drive Experiment-Upgrade (CDX-U), a predecessor to LTX at PPPL, the highest improvement in energy confinement ever observed in Ohmically-heated tokamak plasmas was achieved with a toroidal liquid lithium limiter. The LTX extends this liquid lithium PFC by using a conducting conformal shell that almost completely surrounds the plasma. By heating the shell, a lithium coating on the plasma-facing side can be kept liquefied. A consequence of the low-recycling conditions from liquid lithium walls is the need for efficient plasma fueling. For this purpose, a molecular cluster injector is being developed. Future plans include the installation of a neutral beam for core plasma fueling, and also ion temperature measurements using charge-exchange recombination spectroscopy. Low edge recycling is also predicted to reduce temperature gradients that drive drift wave turbulence. Gyrokinetic simulations are in progress to calculate fluctuation levels and transport for LTX plasmas, and new fluctuation diagnostics are under development to test these predictions. __________________________________________________

  8. Non-practice of breast self examination and marital status are associated with delayed presentation with breast cancer.

    PubMed

    Ghazali, Sumarni Mohd; Othman, Zabedah; Cheong, Kee Chee; Hock, Lim Kuang; Wan Mahiyuddin, Wan Rozita; Kamaluddin, Muhammad Amir; Yusoff, Ahmad Faudzi; Mustafa, Amal Nasir

    2013-01-01

    Delay in seeking treatment for breast cancer is a barrier to the early diagnosis and management of the disease, resulting in a poorer prognosis. We here estimated the prevalence of delayed presentation for breast cancer and identified possible influential sociodemographic factors in a cross-sectional study of 250 patients diagnosed with primary breast cancer at the Radiotherapy and Oncology Clinic in Kuala Lumpur Hospital. Data were collected by face-to-face interview using a structured questionnaire and from medical records. We examined associations between delayed presentation (presenting to a physician more than 3 months after self-discovery of a symptom) and sociodemographic characteristics, practice of breast self examination (BSE), history of benign breast disease, family history of breast cancer and type of symptom, symptom disclosure and advice from others to seek treatment using multiple logistic regression. Time from self-discovery of symptom to presentation ranged from tghe same day to 5 years. Prevalence of delayed presentation was 33.1% (95%CI: 27.4, 39.3). A significantly higher proportion of delayers presented with late stages (stage III/IV) (58.3% vs. 26.9%, p<0.001). Divorced or widowed women (OR: 2.23, 95% CI: 1.11, 4.47) had a higher risk of delayed presentation than married women and women who never performed breast self examination were more likely to delay presentation compared to those who regularly performed BSE (OR: 2.74, 95% CI: 1.33, 5.64). Our findings indicate that delayed presentation for breast cancer symptoms among Malaysian women is high and that marital status and breast self examination play major roles in treatment-seeking for breast cancer symptoms.

  9. Online Real-Time Presentation of Virtual Experiences for External Viewers.

    PubMed

    Ponto, Kevin; Shin, Hyun Joon; Kohlmann, Joe; Gleicher, Michael

    2012-01-01

    Externally observing the experience of a participant in a virtual environment is generally accomplished by viewing an egocentric perspective. Monitoring this view can often be difficult for others to watch due to unwanted camera motions that appear unnatural and unmotivated. We present a novel method for reducing the unnaturalness of these camera motions by minimizing camera movement while maintaining the context of the participant's observations. For each time-step, we compare the parts of the scene viewed by the virtual participant to the parts of the scene viewed by the camera. Based on the similarity of these two viewpoints we next determine how the camera should be adjusted. We present two means of adjustment, one which continuously adjusts the camera and a second which attempts to stop camera movement when possible. Empirical evaluation shows that our method can produce paths that have substantially shorter travel distances, are easier to watch and maintain the original observations of the participant's virtual experience.

  10. Capacity Value of Wind Plants and Overview of U.S. Experience (Presentation)

    SciTech Connect

    Milligan, M.

    2011-08-01

    This presentation provides an overview and summary of the capacity value of wind power plants, based primarily on the U.S. experience. Resource adequacy assessment should explicitly consider risk. Effective load carrying capability (ELCC) captures each generators contribution to resource adequacy. On their own, reserve margin targets as a percent of peak can't capture risks effectively. Recommend benchmarking reliability-based approaches with others.

  11. Primary immune deficiencies presenting in adults: seven years of experience from Iran.

    PubMed

    Mansouri, Davood; Adimi, Parisa; Mirsaedi, Mehdi; Mansouri, Nahal; Tabarsi, Payam; Amiri, Majid; Jamaati, Hamid R; Motavasseli, Masoud; Baghaii, Noushin; Cheraghvandi, Ali; Rouhi, Reza; Roozbahany, Navid A; Zahirifard, Soheila; Mohammadi, Forouzan; Masjedi, Mohammad R; Velayati, Ali A; Casanova, Jean L; Speert, David P; Elwood, R Kevin; Schellenberg, Robert; Turvey, Stuart E

    2005-07-01

    Primary immunodeficiencies (PIDs) are not solely diseases of childhood. We describe the clinical presentation and outcome for 55 adult patients with previously unrecognized PIDs. This series provides unique data regarding PIDs presenting in adulthood, and serves as a timely reminder that physicians must consider the diagnosis of PIDs in their adult patients. Using the experience gained from these patients, we outline key "warning signs" suggestive of an underlying PID. Only through increased physician awareness will patients with PIDs receive timely diagnosis and optimal management.

  12. Patients’ Experiences of Cancer Diagnosis as a Result of an Emergency Presentation: A Qualitative Study

    PubMed Central

    Black, Georgia; Sheringham, Jessica; Spencer-Hughes, Vicki; Ridge, Melanie; Lyons, Mairead; Williams, Charlotte; Fulop, Naomi; Pritchard-Jones, Kathy

    2015-01-01

    Introduction Cancers diagnosed following visits to emergency departments (ED) or emergency admissions (emergency presentations) are associated with poor survival and may result from preventable diagnostic delay. To improve outcomes for these patients, a better understanding is needed about how emergency presentations arise. This study sought to capture patients' experiences of this diagnostic pathway in the English NHS. Methods Eligible patients were identified in a service evaluation of emergency presentations and invited to participate. Interviews, using an open-ended biographical structure, captured participants' experiences of healthcare services before diagnosis and were analysed thematically, informed by the Walter model of Pathways to Treatment and NICE guidance in an iterative process. Results Twenty-seven interviews were conducted. Three typologies were identified: A: Rapid investigation and diagnosis, and B: Repeated cycles of healthcare seeking and appraisal without resolution, with two variants where B1 appears consistent with guidance and B2 has evidence that management was not consistent with guidance. Most patients’ (23/27) experiences fitted types B1 and B2. Potentially avoidable breakdowns in diagnostic pathways caused delays when patients were conflicted by escalating symptoms and a benign diagnosis given earlier by doctors. ED was sometimes used as a conduit to rapid testing by primary care clinicians, although this pathway was not always successful. Conclusions This study draws on patients' experiences of their diagnosis to provide novel insights into how emergency presentations arise. Through these typologies, we show that the typical experience of patients diagnosed through an emergency presentation diverges significantly from normative pathways even when there is no evidence of serious service failures. Consultations were not a conduit to diagnosis when they inhibited patients’ capacity to appraise their own symptoms appropriately and

  13. Proposed program for and present status of the Geological Survey's investigation of domestic resources of radioactive raw materials

    USGS Publications Warehouse

    Bulter, A.P.; Killeen, P.L.; Page, G.B.; Rubey, W.W.

    1983-01-01

    This interim report is designed to show the present status of the Geological Survey's information and the parts of a comprehensive program necessary to improve our information about the raw material resources of uranium and thorium. Rarely in geologic work has it been necessary. to determine so completely a nation's resources of useful minerals in so brief a span of time. Ordinarily, information on mineral resources Is accumulated during a long period of years. However, uranium and thorium were suddenly thrust from a position of subsidiary economic interest into one of great strategic importance. Information concerning their occurrence must, therefore, be obtained as rapidly as reliable methods of investigation will permit. Accordingly the program must be at once comprehensive and carried out over an area more extensive than is usual in the search for and appraisal of most other mineral resources.

  14. Isolation and culture of preantral follicles for retrieving oocytes for the embryo production: present status in domestic animals.

    PubMed

    Gupta, P S P; Nandi, S

    2012-06-01

    The development of efficient ovarian preantral follicle (PF) isolation and culture systems provide a large number of oocytes for the manipulation and embryo production. It also helps for understanding the mechanisms of follicle and oocyte development. Isolation and culture protocols for PFs were developed for many domestic species like cattle, buffalo, sheep, goat, pig, horse, camel, dog and cats; however, embryo production from oocytes derived from in vitro grown PFs was reported only in pigs, buffalo, sheep and goat. The rate of oocyte maturation from PFs grown in vitro is low and requires considerable research. This paper presents an overview of isolation and culture systems of PFs that have been developed for domestic species (cattle, buffalo, sheep, goat, pigs, horse, camel, dog and cat) along with the current status of progress achieved in the direction of producing embryos using PFs as the source of oocyte in these species.

  15. A Database of Historical Still Video by The Mainichi Newspaper : Construction of "MAIHIT" and Its Present Status

    NASA Astrophysics Data System (ADS)

    Maesaka, Toshiyuki

    "MAIHIT" is a still video database by The Mainichi Newspapers. Still video is stored in optical discs and text information such as title, caption, date of photographing is in a large computer, which is retrieved by free keywords. Still video and text information are displayed in a single screen. At this moment, some 60,000 are stored including historical still video of the eras of Meiji, Taisho, Showa (up to the year of 30). In this paper, present status and necessity of image database, circumstances under which it was constructed are described. System configuration and a sample output are also shown. In addition, how this database is helpful and what issues should be considered for the future are mentioned.

  16. Technology and techniques for parity experiments at Mainz: Past, Present and Future

    NASA Astrophysics Data System (ADS)

    Diefenbach, Juergen

    2016-03-01

    For almost 20 years the Mainz accelerator facility MAMI delivered polarized electron beam to the parity violation experiment A4 that measured the contributions of strange sea quarks to the proton electromagnetic factors. Parity violation asymmetries were of the order of A ~5 ppm. Currently the A1 collaboration carries out single spin asymmetry measurements at MAMI (A ~20 ppm) to prepare for a measurement of neutron skin depth on lead (A ~1 ppm). For such high precision experiments active stabilization and precise determination of beam parameters like current, energy, position, and angle are essential requirements in addition to precision electron beam polarimetry. For the future P2 experiment at the planned superconducting accelerator MESA in Mainz the requirements for beam quality will be even higher. P2 will measure the weak mixing angle with 0.15 percent total uncertainty and, in addition, the neutron skin depth of lead as well as parity violation in electron scattering off 12C. A tiny asymmetry of only -0.03 ppm creates the needs to combine digital feedback with feedforward stabilizations along with new polarimetry developments like a hydro-Moller and a double-Mott polarimeter to meet the goals for systematic uncertainty. This talk gives an overview of our experience with polarimetry, analog feedbacks and compensation techniques for apparative asymmetries at the A4 experiment. It finally leads to the requirements and new techniques for the pioneering P2 experiment at MESA. First results from beam tests currently carried out at the existing MAMI accelerator, employing high speed analog/digital conversion and FPGAs for control of beam parameters, will be presented. Supported by the cluster of excellence PRISMA and the Deutsche Forschungsgemeinschaft in the framework of the SFB1044.

  17. Design and development status of ETS-7, an RVD and space robot experiment satellite

    NASA Technical Reports Server (NTRS)

    Oda, M.; Inagaki, T.; Nishida, M.; Kibe, K.; Yamagata, F.

    1994-01-01

    ETS-7 (Engineering Test Satellite #7) is an experimental satellite for the in-orbit experiment of the Rendezvous Docking (RVD) and the space robot (RBT) technologies. ETS-7 is a set of two satellites, a chaser satellite and a target satellite. Both satellites will be launched together by NASDA's H-2 rocket into a low earth orbit. Development of ETS-7 started in 1990. Basic design and EM (Engineering Model) development are in progress now in 1994. The satellite will be launched in mid 1997 and the above in-orbit experiments will be conducted for 1.5 years. Design of ETS-7 RBT experiment system and development status are described in this paper.

  18. Design and development status of ETS-7, an RVD and space robot experiment satellite

    NASA Astrophysics Data System (ADS)

    Oda, M.; Inagaki, T.; Nishida, M.; Kibe, K.; Yamagata, F.

    1994-10-01

    ETS-7 (Engineering Test Satellite #7) is an experimental satellite for the in-orbit experiment of the Rendezvous Docking (RVD) and the space robot (RBT) technologies. ETS-7 is a set of two satellites, a chaser satellite and a target satellite. Both satellites will be launched together by NASDA's H-2 rocket into a low earth orbit. Development of ETS-7 started in 1990. Basic design and EM (Engineering Model) development are in progress now in 1994. The satellite will be launched in mid 1997 and the above in-orbit experiments will be conducted for 1.5 years. Design of ETS-7 RBT experiment system and development status are described in this paper.

  19. Auditory presentation and synchronization in Adobe Flash and HTML5/JavaScript Web experiments.

    PubMed

    Reimers, Stian; Stewart, Neil

    2016-09-01

    Substantial recent research has examined the accuracy of presentation durations and response time measurements for visually presented stimuli in Web-based experiments, with a general conclusion that accuracy is acceptable for most kinds of experiments. However, many areas of behavioral research use auditory stimuli instead of, or in addition to, visual stimuli. Much less is known about auditory accuracy using standard Web-based testing procedures. We used a millisecond-accurate Black Box Toolkit to measure the actual durations of auditory stimuli and the synchronization of auditory and visual presentation onsets. We examined the distribution of timings for 100 presentations of auditory and visual stimuli across two computers with difference specs, three commonly used browsers, and code written in either Adobe Flash or JavaScript. We also examined different coding options for attempting to synchronize the auditory and visual onsets. Overall, we found that auditory durations were very consistent, but that the lags between visual and auditory onsets varied substantially across browsers and computer systems.

  20. Experiences of obstetric nurses who are present for a perinatal loss.

    PubMed

    Puia, Denise M; Lewis, Laura; Beck, Cheryl Tatano

    2013-01-01

    To discover the impact of perinatal loss on obstetric nurses. In the parent study, obstetric nurses were provided with an open-ended statement asking them to describe in writing the experience of being present during a traumatic childbirth. For this study, a secondary qualitative analysis was performed on those cases in which a perinatal loss was described as traumatic to answer new research questions. A total of 464 cases were included in the parent study; 150 cases included either fetal or infant death. Of those, 91 cases had rich descriptions that we analyzed for this study. The data were analyzed using Krippendorff's (2013) method for qualitative content analysis. Responses were clustered to allow themes to emerge. Nurses' experiences of fetal and infant loss were analyzed individually and then compared and contrasted for overarching themes. Six themes emerged from the fetal and infant loss experiences, with the final overarching themes from perinatal loss including getting through the shift, symptoms of pain and loss, frustrations with inadequate care, showing genuine care, recovering from traumatic experience, and never forgetting. Perinatal loss can have a lasting effect on nurses, and thus continued support may be needed. © 2013 AWHONN, the Association of Women's Health, Obstetric and Neonatal Nurses.

  1. The shield of professional status: Comparing internationally educated nurses' and international medical graduates' experiences of discrimination.

    PubMed

    Neiterman, Elena; Bourgeault, Ivy Lynn

    2015-11-01

    This article examines the intersecting roles of gender, ethnicity, and professional status in shaping the experiences of internationally educated health professionals in Canada. The article is based on 140 semi-structured qualitative interviews with internationally trained nurses and physicians who came to Canada within past 10 years with the intention to practice their profession. Describing the challenging process of professional integration in Canada, our participants highlighted incidents of discrimination they experienced along the way. Although some of the participants from both professional groups experienced racial discrimination, the context of those experiences differed. Physicians rarely reported instances of discrimination in communication with patients or nurses. Instead, they were concerned with instances of discrimination within their own professional group. Nurses, on the other hand, reported discrimination at the hands of patients and their families as well as racialization by physicians, management, and other nurses. We conclude our article with a reflection on the role that gender and professional status play in shaping the experiences of ethnic discrimination of internationally educated health professionals. © The Author(s) 2015.

  2. Determining true glomerular filtration status in newly presenting type 2 diabetic subjects using age and sex adjustment.

    PubMed

    Playle, R; Ollerton, R L; Dunstan, F D; Evans, W D; Burch, A; Luzio, S D; Owens, D R

    1998-11-01

    To determine age- and sex-adjusted reference ranges (ASARRs) for glomerular filtration status using data from nondiabetic subjects and to apply these to newly presenting type 2 diabetic subjects. Glomerular filtration rate corrected for body surface area (cGFR) was determined using a radionuclide (51Cr-EDTA) method in 75 non-diabetic subjects (37 men, 38 women) and 219 type 2 diabetic subjects (157 men, 62 women). The 95% constant reference ranges (CRRs) were calculated as mean nondiabetic cGFR+/-1.96 SD. The 95% ASARRs were calculated by Altman's method from the nondiabetic cGFR versus age regression residuals for both male and female subjects. Using Altman's method, the intercepts, but not the gradients, of the cGFR versus age regressions were significantly different between male and female subjects (intercept difference [95% CI] 8.2 [1.3-15.1], gradient difference -0.4 [-1.1 to 0.3]). Fitting a common gradient, 95% ASARRs for normofiltration were found to be from 123.9 - (0.89 X age) to 181.7 - (0.89 x age) for male subjects, and from 116.0 - (0.89 X age) to 173.2 - (0.89 X age) for female subjects. The 95% CRR for normofiltration was 70.2-138.1 ml x min(-1) x (1.73 m)(-2). When applied to the diabetic cGFRs, the CRRs and ASARRs gave, respectively, 17% (37/219) versus 21% (46/219) hyperfiltrators and 83% (181/219) versus 79% (172/219) normofiltrators. Using the ASARRs, 14 normofiltrators (6 men, 8 women) were reclassified as hyperfiltrators (change [n/total n] [95% CI] 8% [14/181] [4-12]), and 5 hyperfiltrators (5 men, 0 women) were reclassified as normofiltrators (change 14% [5/37] [5-30]). We conclude that age and sex adjustment are essential to assess glomerular filtration status.

  3. The Main Injector Particle Physics Experiment (MIPP FNAL E-907) at Fermilab status and plans

    NASA Astrophysics Data System (ADS)

    Raja, Rajendran

    2008-01-01

    We describe the status of the Main Injector particle production Experiment (MIPP) at Fermilab which has to date acquired 18 million events of particle interactions using ( 5 GeV/c-120 GeV/c) π, K and p beams on various targets. We describe plans to upgrade the data acquisition speed of MIPP to make it run 100 times faster which will enable us to obtain particle production data of unprecdented quality and statistics on a wide variety of nuclear targets including nitrogen which is of importance to cosmic ray physics.

  4. Mortality and immortality: the Nobel Prize as an experiment into the effect of status upon longevity.

    PubMed

    Rablen, Matthew D; Oswald, Andrew J

    2008-12-01

    It has been known for centuries that the rich and famous have longer lives than the poor and ordinary. Causality, however, remains trenchantly debated. The ideal experiment would be one in which extra status could somehow be dropped upon a sub-sample of individuals while those in a control group of comparable individuals received none. This paper attempts to formulate a test in that spirit. It collects 19th-century birth data on science Nobel Prize winners. Correcting for potential biases, we estimate that winning the Prize, compared to merely being nominated, is associated with between 1 and 2 years of extra longevity.

  5. The daily commute from work to home: examining employees' experiences in relation to their recovery status.

    PubMed

    van Hooff, Madelon L M

    2015-04-01

    Sufficient recovery after daily effort expenditure at work is important to protect employee health and well-being. However, the role of commuting in the daily effort-recovery process is still not very well understood. The present study aimed to advance insight in this respect by examining if relaxation, detachment, mastery and stressful delays experienced during the commute from work to home affect employees' recovery status after returning home from work and at the end of the evening. Daily job demands were expected to moderate these effects. Serenity and (low) anxiety were included as indicators of employees' recovery status. Data were collected by means of a 5-day daily diary study (three measurements daily) among 76 participants from various industries. Multilevel analyses showed that relaxation was positively and stressful delays were negatively related to employees' recovery status after returning home from work but not to indicators of recovery at the end of the evening. For detachment, similar relations were found but only on days with high job demands. Mastery was not related to employees' recovery status. These findings enhance our insight in the daily effort-recovery cycle and underline the importance of promoting detachment (on demanding workdays) and relaxation on the way home from work.

  6. Mediastinal Pseudocyst: Varied Presentations and Management—Experience from a Tertiary Referral Care Centre in India

    PubMed Central

    Abdul Jameel, Abdul Rehman; Kannan, Naveen; Anbalagan, Amudhan; Duraisamy, Benet; Raju, Prabhakaran

    2017-01-01

    Pseudocysts are a recognised complication following acute or chronic pancreatitis. Usually located in peripancreatic areas, they have also been reported to occur in atypical regions like liver, pelvis, spleen, and mediastinum. Mediastinal pseudocysts are a rare entity and present with myriad of symptoms due to their unique location. They are a clinical challenge to diagnose and manage. In this paper, we describe the clinical and radiological characteristics of mediastinal pseudocysts in 7 of our patients, as well as our experience in managing these patients along with their clinical outcome. PMID:28392624

  7. [Reactions of caudate nucleus neurons to presentation of acoustic clicks to cats in a chronic experiment].

    PubMed

    Litvinova, A N; Lukhanina, E P

    1980-01-01

    Background and evoked activities of the caudate nucleus neurons to repetitive auditory clicks were recorded extracellularly in chronic experiments with partial restrained cats. Four types of background neuronal activity were distinguished. 44% of recorded units altered their background activity during auditory click applications. Five types of neuronal responses were found: phasic activation, phasic inhibition, tonic activation, tonic inhibition, mixed tonic reactions. Tonic activation was predominant. The phasic responses persisted under prolonged presentation of clicks. Partial or total attenuation of tonic responses during frequent repetition of clicks occurred in 33% of responding units. The question is discussed on the convergence of specific and unspecific influences on the caudate nucleus neurons.

  8. [Choice of plant light status for space greenhouse: results of ground-based experience].

    PubMed

    Berkovich, Iu A

    2000-01-01

    To decide on the light status of plants in space greenhouse, a theoretical study was undertaken to correlate specific productivity of space greenhouse with illumination characteristics including vertical PAR flux density (I), photoperiod (tau), and crop leaf index (L). It was demonstrated that in pace with I the daily productivity per a volume unit tended to monotonously approach maximum at I = Ip, whereas the greenhouse energy efficiency ME peaked at I = IE, IK < IE < IP, where IK is a compensation point of the light curve of crop photosynthesis. Proposed are compromise criteria to optimize illumination as a maximum of linear combination of MV and ME and coefficients which account for the cost of a space station volume unit and a unit of board power supply, and as maximum of product Q = MV.ME. Experimental results serve as the basis for a technique for determination of the best, by the Q criterion, light status parameters for three types of space greenhouses: research growth chamber for synchronous cultivation of leaf mustard, wheat growth chamber with fixed crop density, and green conveyer for cultivation of Brassica pekinensis (Lour Rupor). For the last mentioned Q effective I and tau values differed with the conveyer step. The technique allows design of ground-based experiments aimed at determination of the most effective light status of space-grown crops.

  9. The shadow position sensors (SPS) formation flying metrology subsystem for the ESA PROBA-3 mission: present status and future developments

    NASA Astrophysics Data System (ADS)

    Focardi, M.; Noce, V.; Buckley, S.; O'Neill, K.; Bemporad, A.; Fineschi, S.; Pancrazzi, M.; Landini, F.; Baccani, C.; Capobianco, G.; Loreggia, D.; Casti, M.; Romoli, M.; Massone, G.; Nicolini, G.; Accatino, L.; Thizy, C.; Servaye, J. S.; Mechmech, I.; Renotte, E.

    2016-07-01

    PROBA-3 [1] [2] is a Mission of the European Space Agency (ESA) composed of two formation-flying satellites, planned for their joint launch by the end of 2018. Its main purposes have a dual nature: scientific and technological. In particular, it is designed to observe and study the inner part of the visible solar corona, thanks to a dedicated coronagraph called ASPIICS (Association of Spacecraft for Polarimetric and Imaging Investigation of the Corona of the Sun), and to demonstrate the in-orbit formation flying (FF) and attitude control capability of its two satellites. The Coronagraph payload on-board PROBA-3 consists of the following parts: the Coronagraph Instrument (CI) with the Shadow Position Sensor (SPS) on the Coronagraph Spacecraft (CSC), the Occulter Position Sensor (OPSE) [3] [4] and the External Occulting (EO) disk on the Occulter Spacecraft (OSC). The SPS subsystem [5] is one of the main metrological devices of the Mission, adopted to control and to maintain the relative (i.e. between the two satellites) and absolute (i.e. with respect to the Sun) FF attitude. It is composed of eight micro arrays of silicon photomultipliers (SiPMs) [6] that shall be able to measure, with the required sensitivity and dynamic range as asked by ESA, the penumbral light intensity on the Coronagraph entrance pupil. With the present paper we describe the testing activities on the SPS breadboard (BB) and Development Model (DM) as well as the present status and future developments of this PROBA-3 metrological subsystem.

  10. Present and future experiments using bright low-energy positron beams

    NASA Astrophysics Data System (ADS)

    Hugenschmidt, Christoph

    2017-01-01

    Bright slow positron beams enable not only experiments with drastically reduced measurement time and improved signal-to-noise ratio but also the realization of novel experimental techniques. In solid state physics and materials science positron beams are usually applied for the depth dependent analysis of vacancy-like defects and their chemical surrounding using positron lifetime and (coincident) Doppler broadening spectroscopy. For surface studies, annihilation induced Auger-electron spectroscopy allows the analysis of the elemental composition in the topmost atomic layer, and the atomic positions at the surface can be determined by positron diffraction with outstanding accuracy. In fundamental research low-energy positron beams are used for the production of e.g. cold positronium or positronium negative ions. All the aforementioned experiments benefit from the high intensity of present positron beam facilities. In this paper, we scrutinize the technical constraints limiting the achievable positron intensity and the available kinetic energy at the sample position. Current efforts and future developments towards the generation of high intensity spin-polarized slow positron beams paving the way for new positron experiments are discussed.

  11. Space Experiments with Particle Accelerators (SEPAC), status review, 23 September 1980

    NASA Technical Reports Server (NTRS)

    1980-01-01

    The development responsibilities of SEPAC include: accelerator systems, diagnostic systems, power systems, dedicated experiment processor, interface unit, control panel, and all flight software. The operations of SEPAC, including automated experiments under DEP command control and SEPAC manual operations, are outlined. A diagram of the system configuration is presented.

  12. Status of the NGNP Fuel Experiment AGR-2 Irradiated in the Advanced Test Reactor

    SciTech Connect

    Blaine Grover

    2012-10-01

    The United States Department of Energy’s Next Generation Nuclear Plant (NGNP) Advanced Gas Reactor (AGR) Fuel Development and Qualification Program will be irradiating up to seven separate low enriched uranium (LEU) tri-isotopic (TRISO) particle fuel (in compact form) experiments in the Advanced Test Reactor (ATR) located at the Idaho National Laboratory (INL). These irradiations and fuel development are being accomplished to support development of the next generation reactors in the United States, and will be irradiated over the next several years to demonstrate and qualify new TRISO coated particle fuel for use in high temperature gas reactors. The goals of the irradiation experiments are to provide irradiation performance data to support fuel process development, to qualify fuel for normal operating conditions, to support development and validation of fuel performance and fission product transport models and codes, and to provide irradiated fuel and materials for post irradiation examination (PIE) and safety testing. The experiments, which will each consist of at least six separate capsules, will be irradiated in an inert sweep gas atmosphere with individual on-line temperature monitoring and control of each capsule. The sweep gas will also have on-line fission product monitoring on its effluent to track performance of the fuel in each individual capsule during irradiation. The first experiment (designated AGR-1) started irradiation in December 2006 and was completed in November 2009. The second experiment (AGR-2), which utilized the same experiment design as well as control and monitoring systems as AGR-1, started irradiation in June 2010 and is currently scheduled to be completed in April 2013. The design of this experiment and support systems will be briefly discussed, followed by the progress and status of the experiment to date.

  13. Development Unit Configuration and Current Status of the MIP/MTERC Experiment

    NASA Technical Reports Server (NTRS)

    Juanero, K. J.; Johnson, K. R.

    1999-01-01

    The Mars In-Situ Propellant Production (ISPP) Precursor (MIP) experiment package is planned for inclusion on the Mars 2001 Lander. This experiment package consists of five experiments whose purpose is to demonstrate the performance of various ISPP processes in-situ on Mars. The demonstrated ability to produce propellant for Mars Return Vehicles (MRV) is considered to be a necessary precursor to any future manned mission to Mars. The Mars Thermal Environment/Radiator Characterization (MTERC) experiment is part of the MIP package and is intended to determine the Mars night sky temperature as well as to characterize the performance degradation of radiators caused by environmental exposure on Mars over time. Radiators are needed as part of the ISPP process to remove heat from the Mars Atmosphere Acquisition and Compression (MAAC) C02 sorption compressor. MTERC will provide the data needed to optimize the design of radiators for ISPP and other processes. A MTERC Development Unit (DU) has been fabricated and tested at JPL. The MTERC DU consists of: (1) a radiator subassembly, (2) a motor/cover subassembly, (3) a differential temperature control circuit and motor control electronics circuit board, and (4) a command and data handling electronics circuit board. This paper will describe the operational theory and the configuration of the MTERC DU and will discuss the current status of the MTERC experiment development including some selected results of performance testing that has been completed prior to the ISRU III meeting.

  14. Development Unit Configuration and Current Status of the MIP/MTERC Experiment

    NASA Technical Reports Server (NTRS)

    Juanero, K. J.; Johnson, K. R.

    1999-01-01

    The Mars In-Situ Propellant Production (ISPP) Precursor (MIP) experiment package is planned for inclusion on the Mars 2001 Lander. This experiment package consists of five experiments whose purpose is to demonstrate the performance of various ISPP processes in-situ on Mars. The demonstrated ability to produce propellant for Mars Return Vehicles (MRV) is considered to be a necessary precursor to any future manned mission to Mars. The Mars Thermal Environment/Radiator Characterization (MTERC) experiment is part of the MIP package and is intended to determine the Mars night sky temperature as well as to characterize the performance degradation of radiators caused by environmental exposure on Mars over time. Radiators are needed as part of the ISPP process to remove heat from the Mars Atmosphere Acquisition and Compression (MAAC) CO2 sorption compressor. MTERC will provide the data needed to optimize the design of radiators for ISPP and other processes. A MTERC Development Unit (DU) has been fabricated and tested at JPL. The MTERC DU consists of 1) a radiator subassembly, 2) a motor/cover subassembly, 3) a differential temperature control circuit and motor control electronics circuit board, and 4) a command and data handling electronics circuit board. This paper will describe the operational theory and the configuration of the MTERC DU and will discuss the current status of the MTERC experiment development including some selected results of performance testing that has been completed prior to the ISRU III meeting.

  15. On the presentation of wave phenomena of electrons with the Young-Feynman experiment

    NASA Astrophysics Data System (ADS)

    Matteucci, Giorgio

    2011-05-01

    The Young-Feynman two-hole interferometer is widely used to present electron wave-particle duality and, in particular, the buildup of interference fringes with single electrons. The teaching approach consists of two steps: (i) electrons come through only one hole but diffraction effects are disregarded and (ii) electrons come through both holes and interference fringes are described. Therefore, a student might believe that wave phenomena are not revealed in case (i), but they arise only by the combined effect of electrons from the two holes. To avoid misunderstanding regarding the distribution of electrons passing through one hole, Fresnel and Fraunhofer diffraction patterns are discussed. In particular, an original experiment, realized with a standard electron microscope and a sample with round holes, is presented to introduce the wave nature of electrons. The experimental results clearly show that a careful discussion of electron diffraction phenomena from one hole provides students with the evidence that the interference experiment from both holes is not strictly required to show the superposition of electron waves.

  16. Late-Presenting Congenital Diaphragmatic Hernia in Children: The Experience of Single Institution in Korea

    PubMed Central

    Kim, Dong Jin

    2013-01-01

    Purpose Late-presenting congenital diaphragmatic hernia (CDH) beyond the neonatal period is rare and often misdiagnosed, with delayed treatment. Materials and Methods We retrospectively reviewed our experience with late-presenting CDH over 30 years at a single institution to determine the characteristics of late-presenting CDH for early diagnosis. Results Seven patients had operations due to late-presenting CHD in our institution over 30 years. The patients' ages ranged from 2.5 months to 16 years. There were six boys and one girl. Five hernias were left-sided, one was right-sided and one was a retrosternal hernia. All patients had normal intestinal rotation. Non-specific gastrointestinal or respiratory symptoms and signs were usually presented. Intestinal malrotations were absent; therefore, only organs adjacent to the defect or relatively movable organs such as the small bowel and transverse colon were herniated. Two cases were accompanied by stomach herniation with the volvulus and liver, respectively. The duration from presentation to diagnosis varied from 5 days to 1 year. Diagnoses were made by chest X-ray, upper gastrointestinal series and chest computed tomography. All patients underwent primary repair with interrupted non-absorbable sutures by a transabdominal approach. None had postoperative complications. The follow-up period in six patients ranged from 4 months to 20 years (median 3.8 years). There was no recurrence in any of the patients on follow-up. Conclusion A high index of suspicion is important for the diagnosis of late-presenting CDH because it can be a life-threatening condition such as CDH with a gastric volvulus. Early diagnosis and appropriate treatment can lead to a good prognosis. PMID:23918563

  17. Photographic Emulsions in the OPERA Long Baseline Experiment Status and First Results

    NASA Astrophysics Data System (ADS)

    Meisel, Frank W.

    2010-04-01

    The OPERA experiment (Oscillation Project with Emulsion tRacking Apparatus) has been designed to confirm the neutrino oscillation hypothesis by direct observation of the tau neutrino appearance coming out of a (almost) pure muon neutrino beam. The beam is extracted from the SPS at CERN towards the Gran Sasso Underground Laboratory, the location of OPERA, 730km afar. In order to detect the leptonic tau decays, the vertex detector needs a spatial resolution of the order of micrometers. Nuclear emulsion films are the only detector materials capable of fulfilling this tight condition. In addition, emulsion scanning techniques have been significantly improved during the last recent neutrino experiments. This article is going to review the status of the detector, the neutrino beam properties, the first results from the 2008 run and the neutrino event analyses putting special emphasis on the emulsion detection technique.

  18. Women's disclosure of HIV status: experiences of mistreatment and violence in an urban setting.

    PubMed

    Gielen, A C; O'Campo, P; Faden, R R; Eke, A

    1997-01-01

    Women represent an increasing proportion of AIDS cases and anecdotal reports suggest some face substantial risks when others learn they are HIV-positive. The purpose of this paper is to describe women's fears and experiences regarding disclosure of their HIV status. Fifty HIV-positive women, ages 16-45 from urban teaching hospital outpatient clinics, were interviewed using an in-depth, qualitative interview. Eighty-six percent of the women were African American and 56% were current or former IVDU. At the time of the interview, 88% of the women had known their HIV status for a year or more. All but one woman had disclosed her HIV status to at least one person and 82% had disclosed to multiple people. Although two-thirds of the women had been afraid to disclose to others because of concerns about rejection, discrimination or violence, three-quarters of the sample reported only supportive and understanding responses to their disclosure. One-quarter of the sample reported negative consequences of disclosure, including rejection, abandonment, verbal abuse and physical assault. Disclosure-related violence was discussed by nine women (18%): two who feared violence were relieved to find a supportive response; four chose not to disclose their status because they feared violence; and three women were verbally or physically assaulted. Fear of mistreatment figured prominently in decisions about disclosure among this sample. That many women found supportive and understanding responses is encouraging. However, there were sufficient examples of negative consequences, including violence, to suggest individualized approaches to post-test counseling, enhanced support services for HIV-positive women, and public education to destigmatize HIV-disease.

  19. The history, development and the present status of the radon measurement programme in the United States of America.

    PubMed

    George, A C

    2015-11-01

    The US radon measurement programme began in the late 1950s by the US Public Health Service in Colorado, New Mexico and Utah during the uranium frenzy. After the 1967 Congressional Hearings on the working conditions in uranium mines, the US Atomic Energy Commission (AEC) was asked to conduct studies in active uranium mines to assess the exposure of the miners on the Colorado Plateau and in New Mexico. From 1967 to 1972, the Health and Safety Laboratory of the US AEC in New York investigated more than 20 uranium mines for radon and radon decay product concentrations and particle size in 4 large uranium mines in New Mexico. In 1970, the US Environmental Protection Agency (EPA) was established and took over some of the AEC radon measurement activities. Between 1975 and 1978, the Environmental Measurements Laboratory of the US Department of Energy conducted the first detailed indoor radon survey in the USA. Later in 1984, the very high concentrations of radon found in Pennsylvania homes set the wheels in motion and gave birth to the US Radon Industry. The US EPA expanded its involvement in radon issues and assumed an active role by establishing the National Radon Proficiency Program to evaluate the effectiveness of radon measurement and mitigation methods. In 1998, due to limited resources EPA privatised the radon programme. This paper presents a personal perspective of past events and current status of the US radon programme. It will present an update on radon health effects, the incidence rate of lung cancer in the USA and the number of radon measurements made from 1988 to 2013 using short-term test methods. More than 23 million measurements were made in the last 25 y and as a result more than 1.24 million homes were mitigated successfully. It is estimated that <2 % of the radon measurements performed in the USA are made using long-term testing devices. The number of homes above the US action level of 148 Bq m(-3) (4 pCi l(-1)) may be ∼8.5 million because ∼50

  20. Adaptive Structures Flight Experiments

    NASA Technical Reports Server (NTRS)

    Martin, Maurice

    1992-01-01

    The topics are presented in viewgraph form and include the following: adaptive structures flight experiments; enhanced resolution using active vibration suppression; Advanced Controls Technology Experiment (ACTEX); ACTEX program status; ACTEX-2; ACTEX-2 program status; modular control patch; STRV-1b Cryocooler Vibration Suppression Experiment; STRV-1b program status; Precision Optical Bench Experiment (PROBE); Clementine Spacecraft Configuration; TECHSAT all-composite spacecraft; Inexpensive Structures and Materials Flight Experiment (INFLEX); and INFLEX program status.