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  1. Otto Hahn achievement and responsibility

    CERN Document Server

    Hoffmann, Klaus

    2001-01-01

    Otto Hahn (1879-1968) was awarded the 1944 Nobel Prize for Chemistry for his work on atomic fission: his work in Berlin in the 1930s and 1940s with Lise Meitner and Fritz Strassmann led to the discovery that uranium nuclei bombarded by neutrons undergo spontaneous fission, releasing enormous energies. This work, conveyed to England and the US by scientific refugees from Nazi Germany, led to the instigation of the Manhattan Project and the development of the Atomic Bomb. Reviled by many after the war as one of the people responsible for the carnage at Hiroshima and Nagasaki, Hahn had already begun to reflect on the social responsibility of scientists for their fundamental discoveries and the subsequent applications of the knowledge they create. Already during the war, Hahn had protested Nazi restrictions on Universities and researchers, and after the War, he became actively involved in efforts to restrict the spread of nuclear weapons. In this volume Klaus Hoffmann discusses Hahn's contributions to science and...

  2. NS Otto Hahn

    International Nuclear Information System (INIS)

    Schafstall, H.G.

    1983-01-01

    For the bulk cargo ship had been chosen the advanced PWR, the secial characteristic of which is an integrated primary loop with automatic pressurisation. Altogether the Otto Hahn covered over half a million sea-miles. In-service inspections and examinations of the reactor plant were effected by control authorities every year. During the whole operating period the NS Otto Hahn showed a safe and reliable behaviour even from the view of radiation protection. (DG) [de

  3. Decommissioning of NS OTTO HAHN

    International Nuclear Information System (INIS)

    Lettnin, H.K.J.; Viecenz, H.J.

    1982-01-01

    With NS OTTO HAHN for the first time a nuclear propelled merchant vessel has been regularly decommissioned after more than 10 years of successful operation. Based on the concept of the total decontamination about 1100 ts of contaminated and decontaminated components have been dismantled and removed from board ship. 260 ts of contaminated components packed in 10 ft containers and 400-liter drums and the 480 ts RPV unit are stored at the GKSS site for post investigations. A total mass of about 370 ts has been decontaminated by mechanical and chemical procedures below the required radiological limits. The nuclear status of OTTO HAHN has been removed by the competent licensing authority in June 1982 so that the vessel is now offered for sale for conventionel operations. 8 references, 11 figures

  4. Otto Hahn (1944). Discovery of nuclear fission

    International Nuclear Information System (INIS)

    2003-01-01

    Otto Hahn (Frankfurt-on-Main, 1879-Gotinga, 1968) is the discoverer of nuclear fission, which awarded him the Nobel Prize for Chemistry in 1944. After leaving Germany during the Second World War to settle in the United Kingdom, he returned to this country as a renown figure

  5. Otto Hahn (1944). Discovery of nuclear fission

    CERN Document Server

    Hahn, Otto

    2003-01-01

    Otto Hahn (Frankfurt-on-Main, 1879-Gotinga, 1968) is the discoverer of nuclear fission, which awarded him the Nobel Prize for Chemistry in 1944. After leaving Germany during the Second World War to settle in the United Kingdom, he returned to this country as a renown figure.

  6. The su(2)α Hahn oscillator and a discrete Fourier-Hahn transform

    International Nuclear Information System (INIS)

    Jafarov, E I; Stoilova, N I; Van der Jeugt, J

    2011-01-01

    We define the quadratic algebra su(2) α which is a one-parameter deformation of the Lie algebra su(2) extended by a parity operator. The odd-dimensional representations of su(2) (with representation label j, a positive integer) can be extended to representations of su(2) α . We investigate a model of the finite one-dimensional harmonic oscillator based upon this algebra su(2) α . It turns out that in this model the spectrum of the position and momentum operator can be computed explicitly, and that the corresponding (discrete) wavefunctions can be determined in terms of Hahn polynomials. The operation mapping position wavefunctions into momentum wavefunctions is studied, and this so-called discrete Fourier-Hahn transform is computed explicitly. The matrix of this discrete Fourier-Hahn transform has many interesting properties, similar to those of the traditional discrete Fourier transform. (paper)

  7. Hoffmann's disease: MR imaging of hypothyroid myopathy

    International Nuclear Information System (INIS)

    Chung, Jeewon; Ahn, Kyung-Sik; Kang, Chang Ho; Hong, Suk-Joo; Kim, Beak Hyun

    2015-01-01

    Hoffmann's syndrome is a hypothyroid myopathy presenting as muscle stiffness and hypertrophy. It is a rare complication of hypothyroidism. MRI features of this syndrome have seldom been described in the literature. We present a case of Hoffmann's syndrome in a 34-year-old man who underwent lower extremity contrast-enhanced MRI. MRI can demonstrate the hypertrophic configuration, T2 hyperintensity, and enhancement of the involved muscles in Hoffmann's syndrome. Along with clinical, laboratory, and electromyography findings, MRI may be helpful in distinguishing between inflammatory myopathy, myonecrosis, subacute muscle denervation, and infectious myositis. (orig.)

  8. Hoffmann's disease: MR imaging of hypothyroid myopathy

    Energy Technology Data Exchange (ETDEWEB)

    Chung, Jeewon; Ahn, Kyung-Sik; Kang, Chang Ho [Korea University Anam Hospital, Korea University College of Medicine, Department of Radiology, Seoul (Korea, Republic of); Hong, Suk-Joo [Korea University Guro Hospital, Korea University College of Medicine, Department of Radiology, Seoul (Korea, Republic of); Kim, Beak Hyun [Korea University Ansan Hospital, Korea University College of Medicine, Department of Radiology, Gyeonggi-do (Korea, Republic of)

    2015-11-15

    Hoffmann's syndrome is a hypothyroid myopathy presenting as muscle stiffness and hypertrophy. It is a rare complication of hypothyroidism. MRI features of this syndrome have seldom been described in the literature. We present a case of Hoffmann's syndrome in a 34-year-old man who underwent lower extremity contrast-enhanced MRI. MRI can demonstrate the hypertrophic configuration, T2 hyperintensity, and enhancement of the involved muscles in Hoffmann's syndrome. Along with clinical, laboratory, and electromyography findings, MRI may be helpful in distinguishing between inflammatory myopathy, myonecrosis, subacute muscle denervation, and infectious myositis. (orig.)

  9. Uniform Smoothness Entails Hahn-Banach | Albius | Quaestiones ...

    African Journals Online (AJOL)

    the Axiom of Choice), and we denote by ZFC set theory with the Axiom of Choice. Our paper deals with the role of the Axiom of. Choice in functional analysis, and more particularly, with the necessity of using the Axiom of Choice when invoking some consequence of the following Hahn-Banach axiom HB. Mathematics ...

  10. NS OTTO HAHN - the first German nuclear ship

    International Nuclear Information System (INIS)

    1981-01-01

    The NS OTTO HAHN is the first and only European nuclear propelled cargo and research vessel. She entered service in 1968 and was operated for 11 years without any technical failure. The essential experience and know-how about the nuclear propulsion unit is available now. Therefore the ship was decommissioned in 1979. Until the end of 1981 all activated and contaminated components will be removed and decontaminated. The ship can then be released for conventional utilization. In this book the NS OTTO HAHN is described in detail and the experiences of operation as well as research and development activities are reported. All earlier publications of GKSS on the same subject are listed. (orig.) [de

  11. Reverse osmosis seawater test facility on board NS Otto Hahn

    International Nuclear Information System (INIS)

    Boeddeker, K.W.; Hilgendorff, W.; Kaschemekat, J.

    1977-01-01

    To evaluate the performance of reverse osmosis membranes and prototype modules for the desalination of sea water under near technical conditions, a test station has been installed on board the nuclear research vessel NS Otto Hahn. A newly designed plate module with variable membrane area and favorable membrane exchange properties is being used as a test instrument for membranes and operating conditions. (orig./HK) [de

  12. Otto Hahn - Research and responsibility. Conflicts of a scientist

    International Nuclear Information System (INIS)

    Hoffmann, K.

    2005-01-01

    The life of Otto Hahn is documented and the time where science started in the mysterious field of radioactivity. The main steps: Youth, studies, first practical experiences, research at Berlin university, first world war, success for atomic researchers, national socialism - night over Germany, fission of uranium atom, menace with the atomic bomb of Hitler, the American super explosive U235, hunting on atomic researchers, diplomacy with atomic bombs, in conflict with conscience and policy, against nuclear arm tests and atomic arm race. (GL)

  13. Prenatal diagnosis of Werdnig-Hoffmann disease in China

    Institute of Scientific and Technical Information of China (English)

    2003-01-01

    Objective To establish a means for prenatal prediction of spinal muscular atrophy (SMA) through survival motor neuron (SMN) gene deletion analysis and genetic counseling in families with a child affected with SMA. Methods Genetic analysis for prenatal prediction of Werdnig-Hoffmann disease was performed in a at risk Chinese family by polymerase chain reaction (PCR)-single-strand conformation polymorphism (SSCP) in SMN gene exons 7 and 8.Results The pregnancy was positive for the homozygous deletion of the SMN gene, thus the fetus was diagnosed as being affected and the pregnancy was terminated.Conclusion This approach is fast and reliable for DNA-based prenatal diagnosis of Werdnig-Hoffmann disease.

  14. Otto Hahn - Research and responsibility. Conflicts of a scientist; Otto Hahn - Forschung und Verantwortung. Konflikte eines Wissenschaftlers

    Energy Technology Data Exchange (ETDEWEB)

    Hoffmann, K.

    2005-07-01

    The life of Otto Hahn is documented and the time where science started in the mysterious field of radioactivity. The main steps: Youth, studies, first practical experiences, research at Berlin university, first world war, success for atomic researchers, national socialism - night over Germany, fission of uranium atom, menace with the atomic bomb of Hitler, the American super explosive U235, hunting on atomic researchers, diplomacy with atomic bombs, in conflict with conscience and policy, against nuclear arm tests and atomic arm race. (GL)

  15. As Voltas do Pentágono de Hahn

    Directory of Open Access Journals (Sweden)

    Maria Augusta Vilalba Nunes

    2012-09-01

    Full Text Available http://dx.doi.org/10.5007/2176-8552.2011nesp2p109 O conto Pentágono de Hahn do escritor pernambucano Osman Lins se constrói como uma espécie de sistema, em que cinco micronarrativas se embaralham em trinta e dois parágrafos. Cada micronarrativa é designada por um sinal gráfico diferente e cada uma possui um narrador-personagem, sendo que a presença paquidérmica de Senhorita Hahn, uma elefanta que chega à cidade com um circo, é a única coisa que une cada uma das histórias. Este ensaio faz uma leitura do uso dos sinais gráficos dentro da fragmentação narrativa do conto, que, como sugere o título, se constrói aludindo à figura geométrica de um pentágono. Para ilustrar o sistema de Osman, criei uma figura pentagonal em forma de estrela que tem em cada uma de suas pontas um sinal gráfico, o que significa que cada uma das pontas representa uma das micronarrativas. Ao centro, unindo cada ponta da estrela, e, consequentemente, sendo o elo entre as micronarrativas, temos Hahn, a elefanta. A partir dessa figura pentagonal, faço um estudo do possível funcionamento dos sinais gráficos dentro do texto, sendo que minha leitura, no entanto, não procura desvendar o sistema criado por Osman, mas apenas levantar algumas possibilidades.

  16. Hahn-Meitner-Institut Berlin. Annual report 1993

    International Nuclear Information System (INIS)

    1994-01-01

    This report describes the activities of the Hahn-Meitner-Institute (HMI) on four special subjects: 1. Nuclear physics (nuclear reactions, nuclear structure, VICKSI accelerator development), 2. photochemical energy conversion (basic and material research, radiation chemistry), 3. structure research (theory of many-body systems, solid-state physics, neutron scattering, highly stressed metallic materials, trace nutrients in health and nutrition), and 4. information technics (software, real time systems, semiconductor subassembly). The following is presented for every special subject: a) The topics worked on in 1993, b) selected results and c) publications, lectures, theses submitted for diplomas and doctoral theses. (orig.) [de

  17. The 2nd reactor core of the NS Otto Hahn

    International Nuclear Information System (INIS)

    Manthey, H.J.; Kracht, H.

    1979-01-01

    Details of the design of the 2nd reactor core are given, followed by a brief report summarising the operating experience gained with this 2nd core, as well as by an evaluation of measured data and statements concerning the usefulness of the knowledge gained for the development of future reactor cores. Quite a number of these data have been used to improve the concept and thus the specifications for the fuel elements of the 3rd core of the reactor of the NS Otto Hahn. (orig./HP) [de

  18. Atrofia muscular espinal tipo 1: enfermedad de Werdnig-Hoffmann

    OpenAIRE

    Zárate-Aspiros, Romeo; Rosas-Sumano, Ana Beatriz; Paz-Pacheco, Alberto; Fenton-Navarro, Patricia; Chinas-López, Silvet; López-Ríos, José Antonio

    2013-01-01

    Introducción. Las atrofias musculares espinales de la infancia son enfermedades neuromusculares hereditarias, autosómicas, recesivas, caracterizadas por la degeneración de las neuronas motoras del asta anterior de la médula espinal. La atrofia muscular espinal tipo I (enfermedad de Werdnig-Hoffmann) es la forma más severa. Se inicia in útero o durante los primeros meses de vida. La muerte suele ocurrir antes de los dos años de edad. Caso clínico. Lactante de 6 meses de edad que ingresa al Ser...

  19. Continuous and discrete best polynomial degree reduction with Jacobi and Hahn weights

    KAUST Repository

    Ait-Haddou, Rachid

    2016-03-02

    We show that the weighted least squares approximation of Bézier coefficients with Hahn weights provides the best polynomial degree reduction in the Jacobi L2L2-norm. A discrete analogue of this result is also provided. Applications to Jacobi and Hahn orthogonal polynomials are presented.

  20. The Golden Anniversary of the Hahn-Strassmann experiment

    International Nuclear Information System (INIS)

    Fine, L.W.; Herrmann, G.

    1988-01-01

    Nearly fifty years have passed since chemical evidence of fission was first published in the January, 1939 issue of Naturwissenschaften, heralding the beginning of the nuclear age. News had reached America a few days earlier as Niels Bohr arrived in New York and visited with Fermi and others at Columbia. And so began one of the most exciting, dramatic, and profoundly important periods in all of the history of modern science. Although the history of these scientific events has been well-documented, it is appropriate in this Golden Anniversary period to once again record and review them. Making use of (1) the chronology provided by the essential list of publications that followed first publication, (2) eye-witness accounts of the principal participants (as excerpted from live interviews and recording made over the years on audio tapes - including Hahn himself), and (3) available photographic records, the flow of events and the contexts of the times are once again recalled

  1. Two-state approximation of the Fadeev-Hahn equations

    International Nuclear Information System (INIS)

    Brener, S.E.

    1993-01-01

    The equations have been chosen which allow both to solve the scattering problems and to calculate the parameters of bound states of three particles with Coulomb interaction when the system energy is below the decay to three separate particles. The method of constructing of equations which are most suitable for concrete problems is considered. Different numerical schemes to calculate the low energy scattering cross sections with two-particle clusterization in 'in' and 'out' collision's channels have been developed. The bounds of applied approaches were determined and the peculiarities connected with differently defined reaction amplitudes under these approaches have been considered. The interpretation of obtained results at different definitions of reaction amplitudes was demonstrated, and the elastic, inelastic cross sections and muon transfer rates in hydrogen isotope mesic atom collisions have been calculated using Fadeev-Hahn equations. (author)

  2. A Rare Manifestation of Hypothyroid Myopathy: Hoffmann's Syndrome

    Directory of Open Access Journals (Sweden)

    Kang Won Lee

    2015-12-01

    Full Text Available Hypothyroid myopathy is observed frequently and the resolution of the clinical manifestations of myopathy following thyroid hormone replacement is well known. However, a specific subtype of hypothyroid myopathy, Hoffmann's syndrome, characterized by increased muscular mass (pseudohypertrophy, proximal muscle weakness, muscle stiffness and cramps, is rarely reported. Herein, we describe a 34-year-old male who presented with proximal muscle weakness and non-pitting edema of the lower extremities. He initially visited the neurology department where he was suspected of having polymyositis. Additional laboratory evaluation revealed profound autoimmune hypothyroidism and elevated muscle enzymes including creatine kinase. The patient was started on levothyroxine treatment and, subsequently, clinical symptoms and biochemical parameters resolved with the treatment. The present case highlights that hypothyroidism should be considered in the differential diagnosis of musculoskeletal symptoms even in the absence of overt manifestations of hypothyroidism. To our knowledge, this is the first case reported in Korea.

  3. Hoffmann-Infeld black-hole solutions in Lovelock gravity

    Energy Technology Data Exchange (ETDEWEB)

    Aiello, MatIas [Departamento de Fisica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pabellon I, 1428 Buenos Aires (Argentina); Instituto de AstronomIa y Fisica del Espacio, C.C. 67, Suc. 28, 1428 Buenos Aires (Argentina); Ferraro, Rafael [Departamento de Fisica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pabellon I, 1428 Buenos Aires (Argentina); Instituto de AstronomIa y Fisica del Espacio, C.C. 67, Suc. 28, 1428 Buenos Aires (Argentina); Giribet, Gaston [Departamento de Fisica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pabellon I, 1428 Buenos Aires (Argentina); Departamento de Fisica, Universidad Nacional de La Plata, C.C. 67, 1900 La Plata (Argentina)

    2005-07-07

    Five-dimensional black holes are studied in Lovelock gravity coupled to Hoffmann-Infeld nonlinear electrodynamics. It is shown that some of these solutions present a double peak behaviour of the temperature as a function of the horizon radius. This feature suggests that the evaporation process, though drastic for a period, leads to an eternal black-hole remnant. In fact, the form of the caloric curve corresponds to the existence of a plateau in the evaporation rate, which implies that black holes of intermediate scales turn out to be unstable. The geometrical aspects, such as the absence of conical singularity, the structure of horizons, etc are also discussed. In particular, solutions that are asymptotically AdS arise for special choices of the parameters, corresponding to charged solutions of five-dimensional Chern-Simons gravity.

  4. Hoffmann-Infeld black-hole solutions in Lovelock gravity

    International Nuclear Information System (INIS)

    Aiello, MatIas; Ferraro, Rafael; Giribet, Gaston

    2005-01-01

    Five-dimensional black holes are studied in Lovelock gravity coupled to Hoffmann-Infeld nonlinear electrodynamics. It is shown that some of these solutions present a double peak behaviour of the temperature as a function of the horizon radius. This feature suggests that the evaporation process, though drastic for a period, leads to an eternal black-hole remnant. In fact, the form of the caloric curve corresponds to the existence of a plateau in the evaporation rate, which implies that black holes of intermediate scales turn out to be unstable. The geometrical aspects, such as the absence of conical singularity, the structure of horizons, etc are also discussed. In particular, solutions that are asymptotically AdS arise for special choices of the parameters, corresponding to charged solutions of five-dimensional Chern-Simons gravity

  5. Endoscopic cubital tunnel release using the Hoffmann technique.

    Science.gov (United States)

    Hoffmann, Reimer; Lubahn, John

    2013-06-01

    Endoscopic cubital tunnel release was originally described in 1989 by Tsai, and his technique has been modified by other surgeons including Mirza and Cobb. In 2006, Hoffmann and Siemionow described an endoscopic technique quite different from Tsai's original description. Instead of working from the "inside out," Hoffmann's technique is performed through an incision similar to that which would be used for an in situ release of the ulnar nerve. The main difference being that the nerve can be explored and decompressed 10 cm proximal and distal to the arcuate ligament as the surgeon looks down on the nerve and the surrounding tissues while viewing the anatomy through a camera attached to a soft tissue endoscope that is inserted in the wound. The arcuate (Osborne's) ligament is released under direct vision much like a standard in situ decompression. Using a blunt dissection instrument, a workspace is created proximally and distally to the cubital tunnel. Next an illuminated speculum is introduced, the nerve is directly visualized between 4 and 5 cm proximal and distal to the cubital tunnel, and potential compressive forearm fasciae or fibrous bands are released. Finally, a 15-cm, 30° soft tissue endoscope is introduced into the incision, and viewing the internal anatomy on a video monitor, the decompression continues using longer scissors. Any potential bleeding is controlled with a long bayonet bipolar cautery. The authors discuss indications, contraindications, and the surgical technique. Postoperative management and associated complications are also discussed. Copyright © 2013 American Society for Surgery of the Hand. Published by Elsevier Inc. All rights reserved.

  6. A high-order q-difference equation for q-Hahn multiple orthogonal polynomials

    DEFF Research Database (Denmark)

    Arvesú, J.; Esposito, Chiara

    2012-01-01

    A high-order linear q-difference equation with polynomial coefficients having q-Hahn multiple orthogonal polynomials as eigenfunctions is given. The order of the equation coincides with the number of orthogonality conditions that these polynomials satisfy. Some limiting situations when are studie....... Indeed, the difference equation for Hahn multiple orthogonal polynomials given in Lee [J. Approx. Theory (2007), ), doi: 10.1016/j.jat.2007.06.002] is obtained as a limiting case....

  7. Case Report of the Use of Mechanical Ventilation Protective Modes in Werdnig-Hoffmann Disease Domiciliary

    Directory of Open Access Journals (Sweden)

    I.V. Gutsul

    2014-08-01

    Full Text Available The article describes our own clinical observation of using mechanical ventilation protective modes in a child with Werdnig-Hoffmann disease and contracture of the upper and lower extremities.

  8. A set of sums for continuous dual q-2-Hahn polynomials

    International Nuclear Information System (INIS)

    Gade, R. M.

    2009-01-01

    An infinite set {τ (l) (y;r,z)} r,lisanelementofN 0 of linear sums of continuous dual q -2 -Hahn polynomials with prefactors depending on a complex parameter z is studied. The sums τ (l) (y;r,z) have an interpretation in context with tensor product representations of the quantum affine algebra U q ' (sl(2)) involving both a positive and a negative discrete series representation. For each l>0, the sum τ (l) (y;r,z) can be expressed in terms of the sum τ (0) (y;r,z), continuous dual q 2 -Hahn polynomials, and their associated polynomials. The sum τ (0) (y;r,z) is obtained as a combination of eight basic hypergeometric series. Moreover, an integral representation is provided for the sums τ (l) (y;r,z) with the complex parameter restricted by |zq| -2 -Hahn polynomials.

  9. Method of resonating groups in the Faddeev-Hahn equation formalism for three-body nuclear problem

    CERN Document Server

    Nasirov, M Z

    2002-01-01

    The Faddeev-Hahn equation formalism for three-body nuclear problem is considered. For solution of the equations the method of resonant groups have applied. The calculations of tritium binding energy and doublet nd-scattering length have been carried out. The results obtained shows that Faddeev-Hahn equation formalism is very simple and effective. (author)

  10. Thin-shell wormhole solutions in Einstein-Hoffmann-Born-Infeld theory

    Energy Technology Data Exchange (ETDEWEB)

    Mazharimousavi, S. Habib, E-mail: habib.mazhari@emu.edu.tr [Department of Physics, Eastern Mediterranean University, G. Magusa, North Cyprus, Mersin 10 (Turkey); Halilsoy, M., E-mail: mustafa.halilsoy@emu.edu.tr [Department of Physics, Eastern Mediterranean University, G. Magusa, North Cyprus, Mersin 10 (Turkey); Amirabi, Z., E-mail: zahra.amirabi@emu.edu.tr [Department of Physics, Eastern Mediterranean University, G. Magusa, North Cyprus, Mersin 10 (Turkey)

    2011-10-03

    We adopt the Hoffmann-Born-Infeld's (HBI) double Lagrangian approach in general relativity to find black holes and investigate the possibility of viable thin-shell wormholes. By virtue of the non-linear electromagnetic parameter, the matching hypersurfaces of the two regions with two Lagrangians provide a natural, lower-bound radius for the thin-shell wormholes which provides the main motivation to the present study. In particular, the stability of thin-shell wormholes supported by normal matter in higher-dimensional Einstein-HBI-Gauss-Bonnet (EHBIGB) gravity is highlighted. -- Highlights: → We extend the Hoffmann-Born-Infeld Lagrangian to higher dimensions. → We found higher-dimensional black hole solutions for Einstein-Hoffmann-Born-Infeld-Gauss-Bonnet (EHBIGB) gravity. → We obtained thin-shell wormholes in the EHBIGB gravity which are supported by ordinary matter and stable.

  11. Continuous and discrete best polynomial degree reduction with Jacobi and Hahn weights

    KAUST Repository

    Ait-Haddou, Rachid

    2016-01-01

    We show that the weighted least squares approximation of Bézier coefficients with Hahn weights provides the best polynomial degree reduction in the Jacobi L2L2-norm. A discrete analogue of this result is also provided. Applications to Jacobi

  12. Five years of proton therapy of tumours of the eye at Hahn-Meitner Institute, Berlin; Fuenf Jahre Protonentherapie von Augentumoren am Hahn-Meitner-Institut Berlin

    Energy Technology Data Exchange (ETDEWEB)

    Heufelder, J.; Cordini, D.; Heese, J.; Homeyer, H.; Kluge, H.; Morgenstern, H. [Hahn-Meitner-Inst. Berlin, Augentumortherapie (Germany); Fuchs, H. [Hahn-Meitner-Inst. Berlin, Augentumortherapie (Germany); Augenklinik, Charite - Universitaetsmedizin Berlin, Campus Benjamin Franklin (Germany); Hoecht, S.; Nausner, M.; Hinkelbein, W. [Klinik fuer Radioonkologie und Strahlentherapie, Charite - Universitaetsmedizin Berlin, Campus Benjamin Franklin (Germany); Bechrakis, N.E.; Foerster, M.H. [Augenklinik, Charite - Universitaetsmedizin Berlin, Campus Benjamin Franklin (Germany)

    2004-07-01

    Eye tumors (choroidal melanomas, iris melanomas, and choroidal hemangiomas) are being treated with 68 MeV protons since 1998 at the Ion Beam Laboratory of the Hahn-Meitner Institute of Berlin (Germany's first proton therapy center), in cooperation with the Charite University Hospital in Berlin, Campus Benjamin Franklin. The proton beam, generated via a combination of Van de Graaff accelerator and cyclotron, is prepared by passive shaping for conformal tumor irradiation. A digital X-ray verification of the tumor location with the patient in sitting position limits the position uncertainties to a maximum of 0,3 mm. The treatment planning is performed using the program EYEPLAN. OCTOPUS, a CT-based planning program developed in cooperation with the German Cancer Research Center of Heidelberg, is under pre-clinical testing. Thus far, more than 400 patients have been irradiated. The first results are comparable to those obtained in other proton therapy centers. At the end of 2002, the University Hospital of Essen has also become a cooperation partner of the Hahn-Meitner Institute. (orig.) [German] Seit 1998 werden am Ionenstrahllabor des Hahn-Meitner-Instituts Berlin (Deutschlands erster Einrichtung zur Protonentherapie) im Rahmen eines Kooperationsvertrages mit der Charite - Universitaetsmedizin Berlin, Campus Benjamin Franklin, Augentumoren (Aderhautmelanome, Irismelanome und Aderhauthaemangiome) mit 68-MeV-Protonen bestrahlt. Der mittels einer Kombination aus Van de Graaff-Beschleuniger und Zyklotron erzeugte Protonenstrahl wird passiv fuer eine konformale Bestrahlung des Tumors aufbereitet. Eine digitale Roentgenkontrolle der Lagerung des sitzenden Patienten beschraenkt die Lagerungsunsicherheit auf maximal 0,3 mm. Fuer die Bestrahlungsplanung wird das modellbasierte Planungsprogramm EYEPLAN verwendet. In vorklinischer Erprobung befindet sich das mit dem Deutschen Krebsforschungszentrum Heidelberg entwickelte CT-basierte Planungsprogramm OCTOPUS. Bisher wurden

  13. The night of the physicists. Heisenberg, Hahn, Weizsaecker, and the German bomb; Die Nacht der Physiker. Heisenberg, Hahn, Weizsaecker und die deutsche Bombe

    Energy Technology Data Exchange (ETDEWEB)

    Schirach, Richard von

    2014-07-01

    Finally the German atomic physicists around Heisenberg, von Weizsaecker, and Hahn worked on their ''uranium machine'' in a Swabian beer-cellar - and took themselves for the world elite of nuclear research. In imprisonment they heared from the dropping of the Hiroshima bomb - a shock. Richard von Schirach shows the hindered ''fathers of the German atomic bomb'' in close-up, their eagerness, their hybris, their true importance, and their attempts to give after the war a new interpretation of their own role. A book, which raises in the sense of Duerrenmatt the question for the responsibility of science.

  14. Energy-related renovation in the world heritage. Retrofitting 'Glas-Hoffmann' buildings, Berlin; Energetische Sanierung im Weltkulturerbe. Sanierung 'Glas-Hoffmann'-Bauten, Berlin

    Energy Technology Data Exchange (ETDEWEB)

    Brensing, Christian

    2012-11-01

    Between 1955 and 1959, the housing estate at the Schiller park in Berlin-Wedding (Federal Republic in Germany) established in the 1920ies was expanded by four-storey house lines, the so-called Glas-Hoffmann buildings. Since 2008, this ensemble belongs to the Unesco World Heritage. In improving the thermal insulation of the building envelope and the adaptation of the building services to today's standards, therefore the architectural aesthetics of these buildings should not be endangered. The retrofitting was a pilot project of the research project ''Monument and energy - Postwar Modernism''.

  15. The 50th anniversary of the N.S. Otto Hahn. When nuclear power said 'Ahoy'

    International Nuclear Information System (INIS)

    Reinartz, Jerome

    2013-01-01

    In September 1963 the construction of the only German nuclear ship to date, NS Otto Hahn, started in Kiel. For the 50 th anniversary, atw remembers an important part of nuclear technology history in Germany: The research and freight ship shows one thing above all in retrospect: The technology ran reliably. But cost pressure and reservations shattered the dream of a nuclear power shipping era. Until it was decommissioned in 1979 the ship travelled a total of 650,000 sea miles and called at 33 harbours in 22 countries. On the research level, the 'Otto Hahn' could satisfy expectations, however, it could not ring in an era of nuclear shipping - the atomic boat could never cover its operating costs with its freight trips and permission to call at foreign ports were rare. However, on the one hand, the ship's journeys, sometimes under hard weather conditions, demonstrated just how robust and durable the 'progressive pressurized water reactor' on board was, on the other hand, the 'Otto Hahn' had by all means been a prototype which under other market conditions could have been a model for nuclear container ships. In any case, it proved the performance capacity of the then still young German and European nuclear technology industry, that did not need to hide behind the Russian and American competition. (orig.)

  16. Hypoadrenocorticism (Addison's disease) in a Hoffmann's two-toed sloth (Choloepus hoffmanni).

    Science.gov (United States)

    Kline, Sarah; Rooker, Leah; Nobrega-Lee, Michelle; Guthrie, Amanda

    2015-03-01

    A 22-yr-old, captive-born, presumed female Hoffmann's two-toed sloth (Choloepus hoffmanni) presented in respiratory distress with severe dehydration and symptoms of hypotension. During treatment, dysphagia was noted and oral examination revealed enlarged palatine tonsils and mucosal plaques. Bloodwork showed a decreased sodium:potassium ratio, a low baseline cortisol, a decreased adrenocorticotropin response test, and a blunted aldosterone stimulation test. All values were compared to a healthy male Hoffmann's two-toed sloth at the same facility. Despite aggressive medical management and treatment for hypoadrenocorticism, the sloth was found deceased. Necropsy revealed abdominal effusion, multifocal plaques throughout the upper gastrointestinal tract, and testes. Histopathology showed marked adrenal cortical atrophy and intranuclear mucosal inclusions in the gastrointestinal tract; advanced molecular techniques did not uncover any viral etiologies. This is the first reported case of hypoadrenocorticism in a sloth.

  17. The comparison of application of two different frequencies of TENS on excitability of Hoffmann reflex

    OpenAIRE

    Akbari M; Bagheri H; Olyaei G; Talebian S; Jafari F

    2001-01-01

    The aim of this investigation is to compare the effect of applying two transcutaneous electrical nerve stimulation (TENS) current with different frequencies (2 Hz & 100 Hz) on Hoffmann reflex recorded from gastrosoleus muscle of healthy people. Forty female subjects between 20 to 30 years of age were participated in this quasi-experimental design. Twenty of them were exposed to the 100 Hz current and the remaining 20 to 2 Hz current on dermatome S1 root. The excitability of the alpha ...

  18. Hoffmann - Eesti XIX sajandi külaolustiku jäädvustaja

    Index Scriptorium Estoniae

    2002-01-01

    1. II-5. V EKMi Rüütelkonna hoones baltisaksa maalikunstniku ja graafiku Oskar Hoffmanni teoste ülevaatenäitus "Hoffmann fecit". Kuraator Anne Lõugas, kujundaja Saima Veidenberg. Kunstnikust ja tema loomingust. Näitust saadab loengkontsertide sari "Maal ja muusika". 3. II A. Lõugase loeng O. Hoffmanni maalist "Talumees tubakakarbiga". Ilmub kommenteeritud arhiivipublikatsioon - Amanda Tõnissoni TÜs kaitstud seminaritöö O. Hoffmanni kohta.

  19. The night of the physicists. Heisenberg, Hahn, Weizsaecker, and the German bomb

    International Nuclear Information System (INIS)

    Schirach, Richard von

    2014-01-01

    Finally the German atomic physicists around Heisenberg, von Weizsaecker, and Hahn worked on their ''uranium machine'' in a Swabian beer-cellar - and took themselves for the world elite of nuclear research. In imprisonment they heared from the dropping of the Hiroshima bomb - a shock. Richard von Schirach shows the hindered ''fathers of the German atomic bomb'' in close-up, their eagerness, their hybris, their true importance, and their attempts to give after the war a new interpretation of their own role. A book, which raises in the sense of Duerrenmatt the question for the responsibility of science.

  20. The comparison of application of two different frequencies of TENS on excitability of Hoffmann reflex

    Directory of Open Access Journals (Sweden)

    Akbari M

    2001-08-01

    Full Text Available The aim of this investigation is to compare the effect of applying two transcutaneous electrical nerve stimulation (TENS current with different frequencies (2 Hz & 100 Hz on Hoffmann reflex recorded from gastrosoleus muscle of healthy people. Forty female subjects between 20 to 30 years of age were participated in this quasi-experimental design. Twenty of them were exposed to the 100 Hz current and the remaining 20 to 2 Hz current on dermatome S1 root. The excitability of the alpha motoneurone was measured by H-reflex amplitude (peak to peak max/2 before and after the application of the TENS current for 30 minutes. The reflex was recorded and at measured before (TO and after the application of TENS at different times (T1, T% and T10 up to 10 minutes. The mean values were compared by multiple paired T test (alpha=0.00825. The results indicate a considerable decrement in Hoffmann reflex amplitude after application of 100 Hz current in comarison with that of before the application. The effect last for 10 minutes after the TENS application, whereas the application of 2 Hz current results in increment of the Hoffmann reflex amplitude. The 5 and 10 minutes interval test dose not show any significance and the results were attenuated befor 5 minutes. As a conclusion high frequency of TENS (100 Hz has an inhibitory effect on excitability of alpha motor neurone reflex lasting for 10 minutes, while low frequency of TENS (2 Hz has an facilatory effect on the same motoneurone with short lasting effect.

  1. Jürgen Hoffmann (org., The Solidarity Dilemma: Globalisation, Europeanisation and the Trade Unions

    Directory of Open Access Journals (Sweden)

    Hermes Augusto Costa

    2012-10-01

    Full Text Available Organizado por Jürgen Hoffmann, conceituado especialista em questões laborais e sindicais no quadro europeu e global, o presente livro é o resultado de uma conferência realizada em Março de 2001 pelo Instituto Sindical Europeu (ISE. A maioria dos textos reunidos em The Solidarity Dilemma são versões revistas das contribuições para essa conferência, consagrada à análise dos desafios colocados aos sindicatos num contexto de europeização e de globalização. A ideia recorrente de que os sindicat...

  2. Five years of proton therapy of tumours of the eye at Hahn-Meitner Institute, Berlin

    International Nuclear Information System (INIS)

    Heufelder, J.; Cordini, D.; Heese, J.; Homeyer, H.; Kluge, H.; Morgenstern, H.; Fuchs, H.; Hoecht, S.; Nausner, M.; Hinkelbein, W.; Bechrakis, N.E.; Foerster, M.H.

    2004-01-01

    Eye tumors (choroidal melanomas, iris melanomas, and choroidal hemangiomas) are being treated with 68 MeV protons since 1998 at the Ion Beam Laboratory of the Hahn-Meitner Institute of Berlin (Germany's first proton therapy center), in cooperation with the Charite University Hospital in Berlin, Campus Benjamin Franklin. The proton beam, generated via a combination of Van de Graaff accelerator and cyclotron, is prepared by passive shaping for conformal tumor irradiation. A digital X-ray verification of the tumor location with the patient in sitting position limits the position uncertainties to a maximum of 0,3 mm. The treatment planning is performed using the program EYEPLAN. OCTOPUS, a CT-based planning program developed in cooperation with the German Cancer Research Center of Heidelberg, is under pre-clinical testing. Thus far, more than 400 patients have been irradiated. The first results are comparable to those obtained in other proton therapy centers. At the end of 2002, the University Hospital of Essen has also become a cooperation partner of the Hahn-Meitner Institute. (orig.) [de

  3. "Und immer hat's geklungen...". Zu Dämonie und Erlebniskrise in Brentanos "Lore Lay" und in der von Hoffmann und Kierkegaard gedeuteten Mozartschen Don-Juan-Figur

    DEFF Research Database (Denmark)

    Ekmann, Bjørn

    1995-01-01

    Clemens Brentano, fremmedgørelse, indlevelse, romantik, oplevelseskrise, Mozart, E.T.A. Hoffmann, Søren Kierkegaard, forførelsesmotiv......Clemens Brentano, fremmedgørelse, indlevelse, romantik, oplevelseskrise, Mozart, E.T.A. Hoffmann, Søren Kierkegaard, forførelsesmotiv...

  4. Experiences with W3Re/W25Re thermocouples in fuel pins of NS Otto Hahn's two cores

    International Nuclear Information System (INIS)

    Kolb, M.

    1975-01-01

    Applications and performance of thermocouples in the Otto Hahn reactor are presented. The measurement of effective thermocouple time constants and of fuel rod heat transfer time constants utilizing the reactor noise and the resulting small temperature fluctuations which has become practical by the advent of modern noise analysis systems, is dealt with

  5. Experiences during the exchange of fuel elements of the NS OTTO HAHN

    International Nuclear Information System (INIS)

    Scharge, J.; Manthey, H.J.; Schafstall, H.G.

    1977-01-01

    In the fall of 1972, the nuclear ship OTTO HAHN was taken out of service in order to exchange the fuel elements and to take care of necessary modifications. Up to this time, she travelled a total distance of 241 588 nautical miles on 79 trips. The reactor plant was in service for approximately 25 230 h. The fuel elements reached a burn-up of 570 days. The guaranteed burn-up was exceeded by 14%. At sea the reactor was available 99.7% during operation. Operational data proved the design of the reactor plant to be very conservative. The fuel elements were never damaged. This successful operation of the FDR-reactor and its first core demonstrated that a reactor of this type is suitable for shipboard use. (orig.) [de

  6. The self-presentation of the Halle medical professor Friedrich Hoffmann (1660-1742) mirrored by his autobiography.

    Science.gov (United States)

    Schweikardt, Christoph

    2002-12-01

    The lost autobiography of the famous Halle medical professor Friedrich Hoffmann (1660-1742) was recently located in the Manuscripta borussica collection of the Berlin State Library Manuscript Department (Handschriftenabteilung der Staatsbibliothek zu Berlin). The autobiography shows new details about his life and work as well as his strategy to shape the picture of his personality for posterity.

  7. Total intravenous anesthesia (TIVA) in an infant with Werdnig-Hoffmann disease. Case report.

    Science.gov (United States)

    de Resende, Marco Antonio Cardoso; da Silva, Elizabeth Vaz; Nascimento, Osvaldo José Moreira; Gemal, Alberto Esteves; Quintanilha, Giseli; Vasconcelos, Eliana Maria

    2010-01-01

    Werdnig-Hoffmann disease is the most common cause of hypotonia in infants and its prognosis is worse if it is present shortly after delivery. Symmetrical muscular weakness, areflexia, and fasciculations of the tongue are characteristic. The majority of the infants die before two years of age as a consequence of respiratory failure. The present report presents a case in which total intravenous anesthesia was used. This is a 1 year old white female weighing 10 kg, physical status ASA III, with Werdnig-Hoffmann disease diagnosed at two months of age. The patient was a candidate for open gastrostomy, fundus gastroplication, and tracheostomy. After venoclysis, the patient was monitored with cardioscope, non-invasive blood pressure, pulse oximeter, precordial stethoscope, and rectal temperature. She was oxygenated and, after bolus administration of atropine (0.3 mg), boluses of remifentanil (20 microg) and propofol (30 mg) were administered for anesthetic induction. After tracheal intubation, she was ventilated with manual controlled system without CO(2) absorber, Baraka (Mapleson D system), FGF of 4 L.min(-1), and FiO(2) 0.5 (O(2)/N(2)O). Anesthesia was maintained with continuous manual infusion of propofol, 250 microg x kg(-1) x min(-1), and remifentanil, 0.3 microg x kg(-1) x min(-1). The surgery lasted 150 minutes. The patient regained consciousness 8 minutes after the end of the infusion, ventilating spontaneously. Two hours later, she was transferred to the pediatric unit, being discharged from the hospital on the fourth postoperative day. The choice of anesthetic technique gives priority to the safety associated with the familiarity of handling available drugs. In children with neuromuscular diseases, due to the extremely short duration, total intravenous anesthesia with remifentanil and propofol in infusion systems can have a favorable influence on disease evolution.

  8. Scientists from all over the world attend the 2005 Frederic Joliot/Otto Hahn summer school at Karlsruhe; Wissenschaftler aus aller Welt bei der ''Frederic Joliot/Otto Hahn Summer School 2005'' in Karlsruhe

    Energy Technology Data Exchange (ETDEWEB)

    Sanchez, V.H.; Fischer, U. [Forschungszentrum Karlsruhe, Inst. fuer Reaktorsicherheit, Eggenstein-Leopoldshafen (Germany)

    2005-10-01

    The Frederic Joliot/Otto Hahn Summer School annually organized alternately by the Karlsruhe Research Center and the Commissariat a l'Energie Atomique (CEA), Cadarche, France, this year was held at the Karlsruhe Congress Center. In line with the mission of the School to disseminate nuclear competence an a broad basis among young scientists from all over the world, lectures covered reactor physics, nuclear fuels, and nuclear systems. Speakers from leading international research institutions presented introductions to their respective fields, outlined the current state of the art, and also highlighted areas in need of further development and, thus, likely to offer challenges to young scientists. Next year's Frederic Joliot/Otto Hahn Summer School will be organized by CEA and held at Cadarache, France. (orig.)

  9. The 50{sup th} anniversary of the N.S. Otto Hahn. When nuclear power said 'Ahoy'; Als die Kernenergie 'Ahoi' rief. NS Otto Hahn. Nuklearbetriebenes Forschungs- und Frachtschiff

    Energy Technology Data Exchange (ETDEWEB)

    Reinartz, Jerome [atw-Redaktion, Hattingen (Germany)

    2013-11-15

    In September 1963 the construction of the only German nuclear ship to date, NS Otto Hahn, started in Kiel. For the 50{sup th} anniversary, atw remembers an important part of nuclear technology history in Germany: The research and freight ship shows one thing above all in retrospect: The technology ran reliably. But cost pressure and reservations shattered the dream of a nuclear power shipping era. Until it was decommissioned in 1979 the ship travelled a total of 650,000 sea miles and called at 33 harbours in 22 countries. On the research level, the 'Otto Hahn' could satisfy expectations, however, it could not ring in an era of nuclear shipping - the atomic boat could never cover its operating costs with its freight trips and permission to call at foreign ports were rare. However, on the one hand, the ship's journeys, sometimes under hard weather conditions, demonstrated just how robust and durable the 'progressive pressurized water reactor' on board was, on the other hand, the 'Otto Hahn' had by all means been a prototype which under other market conditions could have been a model for nuclear container ships. In any case, it proved the performance capacity of the then still young German and European nuclear technology industry, that did not need to hide behind the Russian and American competition. (orig.)

  10. Laguerre-Freud equations for the recurrence coefficients of the Laguerre-Hahn orthogonal polynomials on special nonuniform lattices

    International Nuclear Information System (INIS)

    Bangerezako, Gaspard; Foupouagnigni, Mama

    2003-10-01

    We give an algorithmic derivation of the Laguerre-Freud equations for the recurrence coefficients β n and γ n of the Laguerre-Hahn orthogonal polynomials on special nonuniform lattices. This algorithm is the most general one since it is valid for the Laguerre-Hahn orthogonal polynomials of any class k, on the special nonuniform lattices including the continuous (limiting cases), linear, q-linear and the q-nonlinear ones. Moreover, the algorithm allows to deduce an upper bound for the order of the equations in β n and γ n , which is respectively 2 k + 2 and 2 k + 3 when k is even, or 2 k + 3 and 2 k + 2 when k is odd. Finally, as applications, we discuss explicitly these equations for k = 1 in the continuous and linear cases, and k = 2 in the continuous symmetric one. (author)

  11. Scientists from all over the world attend the 2005 Frederic Joliot/Otto Hahn summer school at Karlsruhe

    International Nuclear Information System (INIS)

    Sanchez, V.H.; Fischer, U.

    2005-01-01

    The Frederic Joliot/Otto Hahn Summer School annually organized alternately by the Karlsruhe Research Center and the Commissariat a l'Energie Atomique (CEA), Cadarche, France, this year was held at the Karlsruhe Congress Center. In line with the mission of the School to disseminate nuclear competence an a broad basis among young scientists from all over the world, lectures covered reactor physics, nuclear fuels, and nuclear systems. Speakers from leading international research institutions presented introductions to their respective fields, outlined the current state of the art, and also highlighted areas in need of further development and, thus, likely to offer challenges to young scientists. Next year's Frederic Joliot/Otto Hahn Summer School will be organized by CEA and held at Cadarache, France. (orig.)

  12. 1981 research programme and budget of Hahn-Meitner-Institut fuer Kernforschung Berlin

    International Nuclear Information System (INIS)

    Anon.

    1981-01-01

    Hahn-Meitner-Institut fuer Kernforschung Berlin (HMI) is one of the twelve large research centers of the Federal Republic of Germany; like the other centers, it has to present a combined research programme and budget (programme budget) every year. In these programme budgets, as in the medium-term financial planning in the federal budget, planning for the current year is combined with a medium-term plan for the three next years. For the year 1981, the budget of HMI includes a total expenditure of about DM 85 million, DM 71.2 million of which are direct R + D expenditures. This R + D programme is carried by 396 of the total staff of 705. Research is done in the following fields (approximate figures): Heavy ion physics DM 23.0 million. Radiation- and photochemistry DM 11.4 million. Solid state research DM 20.9 million. Nuclear chemistry DM 8.9 million. Data processing/electronics DM 7.0 million. (orig./UA) [de

  13. Quantitative Hahn-Banach Theorems and Isometric Extensions forWavelet and Other Banach Spaces

    Directory of Open Access Journals (Sweden)

    Sergey Ajiev

    2013-05-01

    Full Text Available We introduce and study Clarkson, Dol’nikov-Pichugov, Jacobi and mutual diameter constants reflecting the geometry of a Banach space and Clarkson, Jacobi and Pichugov classes of Banach spaces and their relations with James, self-Jung, Kottman and Schäffer constants in order to establish quantitative versions of Hahn-Banach separability theorem and to characterise the isometric extendability of Hölder-Lipschitz mappings. Abstract results are further applied to the spaces and pairs from the wide classes IG and IG+ and non-commutative Lp-spaces. The intimate relation between the subspaces and quotients of the IG-spaces on one side and various types of anisotropic Besov, Lizorkin-Triebel and Sobolev spaces of functions on open subsets of an Euclidean space defined in terms of differences, local polynomial approximations, wavelet decompositions and other means (as well as the duals and the lp-sums of all these spaces on the other side, allows us to present the algorithm of extending the main results of the article to the latter spaces and pairs. Special attention is paid to the matter of sharpness. Our approach is quasi-Euclidean in its nature because it relies on the extrapolation of properties of Hilbert spaces and the study of 1-complemented subspaces of the spaces under consideration.

  14. The muscle CT of thigh in chronic Werdnig-Hoffmann disease

    International Nuclear Information System (INIS)

    Horikawa, Hirosei; Konagaya, Masaaki; Takayanagi, Tetsuya; Otsuji, Hideaki

    1986-01-01

    In this paper, the muscle CT of thigh in chronic Werdnig-Hoffmann disease (chronic WH) was evaluated. The subjects were five cases of chronic WH (3 males and 2 females, ages ranging from 6 to 22 years) and four control males. All cases showed symmetrical muscular weakness. The proximal muscle were more affected than the distal in the upper limbs. But the muscle strength of hip adduction was relatively spared as compared with other strength of lower limbs. The CT scan was carried out at the upper quarter level between lesser trochanter and medial condyle of the femur. The muscle CT of cases aged 6 and 7 years showed the severely decreased cross-sectional area of muscle without significant decrease in density. The atrophic muscles were surrounded by a large amount of low density area. The hamstring muscles and the adductor muscles, especially adductor longus muscle (ALM), were less affected than the quadriceps femoris muscles. Spotty and moth-eaten low density areas were observed dominantly in the severely affected muscles. In the advanced cases, only ALM could be identified on the CT image. The other muscles were unable to be identified because of severe atrophy with extremely low density. These CT findings suggest the process of muscular wastings of chronic WH as follows; at first muscle fibers are atrophied due to denervation and sooner or later replaced with fat tissue. Moreover, the preservation of ALM suggests that loss of anterior horn cells does not always go on homogeneously. (author)

  15. Testing general relativity with compact-body orbits: a modified Einstein–Infeld–Hoffmann framework

    Science.gov (United States)

    Will, Clifford M.

    2018-04-01

    We describe a general framework for analyzing orbits of systems containing compact objects (neutron stars or black holes) in a class of Lagrangian-based alternative theories of gravity that also admit a global preferred reference frame. The framework is based on a modified Einstein–Infeld–Hoffmann (EIH) formalism developed by Eardley and by Will, generalized to include the possibility of Lorentz-violating, preferred-frame effects. It uses a post-Newtonian N-body Lagrangian with arbitrary parameters that depend on the theory of gravity and on ‘sensitivities’ that encode the effects of the bodies’ internal structure on their motion. We determine the modified EIH parameters for the Einstein-Æther and Khronometric vector-tensor theories of gravity. We find the effects of motion relative to a preferred universal frame on the orbital parameters of binary systems containing neutron stars, such as a class of ultra-circular pulsar-white dwarf binaries; the amplitudes of the effects depend upon ‘strong-field’ preferred-frame parameters \\hatα1 and \\hatα2 , which we relate to the fundamental modified EIH parameters. We also determine the amplitude of the ‘Nordtvedt effect’ in a triple system containing the pulsar J0337+1715 in terms of the modified EIH parameters.

  16. Scientists from all over the world attend the Frederic Joliot/Otto Hahn summer school at the Karlsruhe Research Center; Wissenschaftler aus aller Welt bei der Frederic Joliot/Otto Hahn Summer School im Forschungszentrum Karlsruhe

    Energy Technology Data Exchange (ETDEWEB)

    Heinzel, V.

    2003-11-01

    The Frederic Joliot/Otto Hahn Summer School organized jointly by the Karlsruhe Research Center and the Commissariat a l'Energie Atomique was held in Karlsruhe in 2003 for the third time. The main topics this year focused on recent developments and findings in the fields of fuels and materials for reactors. Applications of nuclear technology beyond the confines of electricity generation were covered in discussions shout methods of hydrogen production. Specialized seminars dealt with current aspects of fusion research and the activities of the Institute for Transuranium Elements (ITU). (orig.)

  17. Anestesia venosa total (AVT) em lactente com doença de Werdnig-Hoffmann: relato de caso

    OpenAIRE

    Resende, Marco Antonio Cardoso de; Silva, Elizabeth Vaz da; Nascimento, Osvaldo José Moreira; Gemal, Alberto Esteves; Quintanilha, Giseli; Vasconcelos, Eliana Maria

    2010-01-01

    JUSTIFICATIVA E OBJETIVOS: A doença de Werdnig-Hoffmann é a causa mais comum de hipotonia no lactente e quando presente logo após o nascimento tem pior prognóstico. Fraqueza muscular simétrica, arreflexia e fasciculações da língua são característicos. A maioria dos lactentes morre antes dos dois anos por insuficiência respiratória. O presente relato apresenta um caso com técnica venosa total durante anestesia. RELATO DO CASO: Paciente feminina, branca, um ano, 10 kg, estado físico ASA III, co...

  18. Modulation of the Fibularis Longus Hoffmann Reflex and Postural Instability Associated With Chronic Ankle Instability

    Science.gov (United States)

    Kim, Kyung-Min; Hart, Joseph M.; Saliba, Susan A.; Hertel, Jay

    2016-01-01

    Context: Individuals with chronic ankle instability (CAI) present with decreased modulation of the Hoffmann reflex (H-reflex) from a simple to a more challenging task. The neural alteration is associated with impaired postural control, but the relationship has not been investigated in individuals with CAI. Objective: To determine differences in H-reflex modulation and postural control between individuals with or without CAI and to identify if they are correlated in individuals with CAI. Design: Descriptive laboratory study. Setting: Laboratory. Patients or Other Participants: A total of 15 volunteers with CAI (9 males, 6 females; age = 22.6 ± 5.8 years, height = 174.7 ± 8.1 cm, mass = 74.9 ± 12.8 kg) and 15 healthy sex-matched volunteers serving as controls (9 males, 6 females; age = 23.8 ± 5.8 years, height = 171.9 ± 9.9 cm, mass = 68.9 ± 15.5 kg) participated. Intervention(s): Maximum H-reflex (Hmax) and motor wave (Mmax) from the soleus and fibularis longus were recorded while participants lay prone and then stood in unipedal stance. We assessed postural tasks of unipedal stance with participants' eyes closed for 10 seconds using a forceplate. Main Outcome Measure(s): We normalized Hmax to Mmax to obtain Hmax : Mmax ratios for the 2 positions. For each muscle, H-reflex modulation was quantified using the percentage change scores in Hmax : Mmax ratios calculated from prone position to unipedal stance. Center-of-pressure data were used to compute 4 time-to-boundary variables. Separate independent-samples t tests were performed to determine group differences. Pearson product moment correlation coefficients were calculated between the modulation and balance measures in the CAI group. Results: The CAI group presented less H-reflex modulation in the soleus (t26 = −3.77, P = .001) and fibularis longus (t25 = −2.59, P = .02). The mean of the time-to-boundary minima in the anteroposterior direction was lower in the CAI group (t28 = −2.06, P = .048

  19. Anestesia venosa total (AVT) em lactente com doença de Werdnig-Hoffmann: relato de caso Anestesia general intravenosa (AVT) en lactante con enfermedad de Werdnig-Hoffmann: relato de caso Total intravenous anesthesia (TIVA) in an infant with Werdnig-Hoffmann disease: case report

    OpenAIRE

    Marco Antonio Cardoso de Resende; Elizabeth Vaz da Silva; Osvaldo José Moreira Nascimento; Alberto Esteves Gemal; Giseli Quintanilha; Eliana Maria Vasconcelos

    2010-01-01

    JUSTIFICATIVA E OBJETIVOS: A doença de Werdnig-Hoffmann é a causa mais comum de hipotonia no lactente e quando presente logo após o nascimento tem pior prognóstico. Fraqueza muscular simétrica, arreflexia e fasciculações da língua são característicos. A maioria dos lactentes morre antes dos dois anos por insuficiência respiratória. O presente relato apresenta um caso com técnica venosa total durante anestesia. RELATO DO CASO: Paciente feminina, branca, um ano, 10 kg, estado físico ASA III, co...

  20. Poetry, Nature and Science: Romantic Nature Philosophy in the Works of Novalis and E. T. a. Hoffmann

    Science.gov (United States)

    Weisend, Ausma Skerbele

    The nature philosophy of the early Romantic period in Germany attempted to find a synthesis of science and philosophy in a new philosophy of nature. This philosophy was first formulated by F. W. J. Schelling and influenced by the galvanic experiments of J. W. Ritter. Novalis is a unique figure in romanticism since he combines scientific expertise with philosophical insight and poetic imagination. In Lehrlinge zu Sais he explores the significance of nature's language and presents different relationships between man and nature. Novalis thinks that a synthesis of all divergent elements in nature and society is necessary to transform the world. In Klingsohrs Marchen this transformation is accomplished by poetic activation of the physical sciences and by the power of love. After 1800 the romantic movement becomes interested in the problems of subconscious and abnormal psychological states, which are seen as contacts with a more spiritual level of existence. These ideas, expressed in a popular form by G. H. Schubert, provide a rich source of materials for E. T. A. Hoffmann, who elevates the realms of poetry and music in his fairy tales, but sees only negative qualities in science. Hoffmann's protagonists find that love, music, and poetry are the greatest forces in life. The figure of the scientist becomes an evil magician with no regard for human values. The romantic movement failed to unite the values of humanities with the insights of physical sciences. The problem of autonomy isolates both modern science and modern literature from the ethical values of society.

  1. rDNA mapping, heterochromatin characterization and AT/GC content of Agapanthus africanus (L. Hoffmanns (Agapanthaceae

    Directory of Open Access Journals (Sweden)

    ARYANE C. REIS

    2016-01-01

    Full Text Available ABSTRACT Agapanthus (Agapanthaceae has 10 species described. However, most taxonomists differ respect to this number because the great phenotypic plasticity of the species. The cytogenetic has been an important tool to aid the plant taxon identification, and to date, all taxa of Agapanthus L'Héritier studied cytologically, presented 2n = 30. Although the species possess large chromosomes, the group is karyologically little explored. This work aimed to increase the cytogenetic knowledge of Agapanthus africanus (L. Hoffmanns by utilization of chromosome banding techniques with DAPI / CMA3 and Fluorescent in situ Hybridization (FISH. In addition, flow cytometry was used for determination of DNA content and the percentage of AT / GC nitrogenous bases. Plants studied showed 2n = 30 chromosomes, ranging from 4.34 - 8.55 µm, with the karyotype formulae (KF = 10m + 5sm. Through FISH, one 45S rDNA signal was observed proximally to centromere of the chromosome 7, while for 5S rDNA sites we observed one signal proximally to centromere of chromosome 9. The 2C DNA content estimated for the species was 2C = 24.4 with 59% of AT and 41% of GC. Our data allowed important upgrade for biology and cytotaxonomy of Agapanthus africanus (L. Hoffmanns.

  2. Lower Amplitude of the Hoffmann Reflex in Women With Patellofemoral Pain: Thinking Beyond Proximal, Local, and Distal Factors.

    Science.gov (United States)

    de Oliveira Silva, Danilo; Magalhães, Fernando Henrique; Faria, Nathálie Clara; Pazzinatto, Marcella Ferraz; Ferrari, Deisi; Pappas, Evangelos; de Azevedo, Fábio Mícolis

    2016-07-01

    To investigate whether vastus medialis (VM) Hoffmann reflexes (H-reflexes) differ on the basis of the presence or absence of patellofemoral pain (PFP) and to assess the capability of VM H-reflex measurements in accurately discriminating between women with and without PFP. Cross-sectional study. Laboratory of biomechanics and motor control. Women (N=30) aged 18 to 35 years were recruited, consisting of 2 groups: women with PFP (n=15) and asymptomatic controls (n=15). Not applicable. Maximum evoked responses were obtained by electrical stimulation applied to the femoral nerve, and peak-to-peak amplitudes of maximal Hoffmann reflex (Hmax) and maximal motor wave (Mmax) ratios were calculated. Independent samples t tests were performed to identify differences between groups, and a receiver operating characteristic curve was constructed to assess the discriminatory capability of VM H-reflex measurements. VM Hmax/Mmax ratios were significantly lower in participants with PFP than in pain-free participants (P=.007). In addition, the VM Hmax/Mmax ratios presented large and balanced discriminatory capability values (sensitivity, 73%; specificity, 67%). This study is the first to show that VM H-reflexes are lower in women with PFP than in asymptomatic controls. Therefore, increasing the excitation of the spinal cord in PFP participants may be essential to maintaining the gains acquired during the rehabilitation programs. Copyright © 2016 American Congress of Rehabilitation Medicine. Published by Elsevier Inc. All rights reserved.

  3. Catástrofe y no catastrofismo en las poéticas de Benedetti, Gelman, Hahn y Romero

    Directory of Open Access Journals (Sweden)

    Silvana Serrani

    2013-06-01

    Full Text Available Which significant expressive singularities can be pointed out in the poetic expression of apocalyptic issues in Southern Cone Spanish American poetry? This paper focuses on the poetics of four authors who produced part of their work in exile, as a result of apocalyptic XXth Century dictatorships in the Latin-American Southern Cone: Mario Benedetti (Uruguay, Juan Gelman (Argentina,Oscar Hahn (Chile and Elvio Romero (Paraguay. Our thematic approach does not concentrate on the Biblical Apocalypse or St John´s myths in literature, but, rather, on the poetic expressions of historical ruptures or extraordinary disasters. The paper takes into account the notion of (poetic constellation (Monteleone, 2003 & 2010 to explain the non-exhaustivity of the group of poetics and the relevance of considering these four formally dissimilar poetics together. A synthetic characterization of each of the poetics is presented, based on well-known critical studies, discussing and exemplifying: neo-manierism and elements of fantasy literature in Hahn´s poetry; torrential wordiness and symbolism in Gelman´s poetry; “realism” and songs of heroic deeds in Romero´s poetry and “humorous” colloquialism in Benedetti´s poetry. Finally, using Discourse Studies, mainly, the interdiscourse concept (Foucault, [1969]2012; Pêcheux, [1990]2009, we show that, despite the underlying differences between the four poetics, two points of convergence can be pointed out: non-catastrophism and the universal approach of (even local issues pervading the constellation composed by those four poetic expressions.

  4. New ocular movement detector system as a communication tool in ventilator-assisted Werdnig-Hoffmann disease.

    Science.gov (United States)

    Kubota, M; Sakakihara, Y; Uchiyama, Y; Nara, A; Nagata, T; Nitta, H; Ishimoto, K; Oka, A; Horio, K; Yanagisawa, M

    2000-01-01

    A non-contact communication system was developed for a ventilator-assisted patient with Werdnig-Hoffmann disease who had lost all voluntary movements except for those of the eye. The system detects the extraocular movements and converts them to either a 'yes' signal (produced by one lateral eyeball movement) or a 'no' signal (produced by two successive lateral eyeball movements) using a video camera placed outside the patient's visual field. The patient is thus able to concentrate on performing a task without any intrusion from the detection system. Once the setting conditions of the device have been selected, there is no need for any resetting, as the patient is unable to move his body. In addition to playing television games, the child can use the device to select television channels, compose music, and learn written Japanese and Chinese characters. This seems to broaden the patient's daily world and promote mental development.

  5. Scientists from all over the world attend the 2007 - Frederic Joliot/Otto Hahn Summer School on Nuclear Reactors, ''Physics, Fuels and Systems''

    International Nuclear Information System (INIS)

    Fischer, U.; Sanchez-Espinoza, V.H.

    2007-01-01

    For more than ten years, the Frederic Joliot/Otto Hahn Summer School has been organized alternately by the Karlsruhe Research Center in Germany and the French Commissariat a l'Energie Atomique (CEA), Cadarache, in France. This year, the Summer School was held at the Center for Advanced Training in Technology and the Environment of the Karlsruhe Research Center on August 29 to September 7. The overarching topic of the event was the sustainability of nuclear power, including topical issues of generation-IV reactor concepts, transmutation and actinide separation, and geologic final storage. Next year's Frederic Joliot/Otto Hahn Summer School will be organized by CEA at Aix-en-Provence together with the Nuclear Safety Research Program of the Karlsruhe Research Center. (orig.)

  6. Analysis of NMR spectra of sugar chains of glycolipids by multiple relayed COSY and 2D homonuclear Hartman-Hahn spectroscopy

    International Nuclear Information System (INIS)

    Inagaki, F.; Kohda, D.; Kodama, C.; Suzuki, A.

    1987-01-01

    The authors applied multiple relayed COSY and 2D homonuclear Hartman-Hahn spectroscopy to globoside, a glycolipid purified from human red blood cells. The subspectra corresponding to individual sugar components were extracted even from overlapping proton resonances by taking the cross sections of 2D spectra parallel to the F 2 axis at anomeric proton resonances, so that unambiguous assignments of sugar proton resonances were accomplished. (Auth.)

  7. On machines and instruments (I: The automaton’s body in the work of E.T.A. Hoffmann

    Directory of Open Access Journals (Sweden)

    Montiel, Luis

    2008-06-01

    Full Text Available Immediately after becoming interested in animal magnetism, and undoubtedly as a result of this interest, E.T.A. Hoffmann used automata as the central characters in some of his most notable works. This paper aims to show how this interest reveals the author’s critical attitude towards a conception of the human being which, developing in parallel to anatomy-based medicine, had led in the eighteenth century to a doctrine whose most complete expression is to be found in L'homme machine, by J. O. De La Mettrie. Nowadays we can see these tales, like those dedicated to animal magnetism, as a cry of alarm against one of the consequences of such a mechanical conception of a human being: the growth of «biopower», or of «biopolitics», terms coined by Foucault in his last works; but also against the risks entailed by the Promethean drive of modernity.

    Inmediatamente después de interesarse por el magnetismo animal, y seguramente como consecuencia de dicho interés, E.T.A. Hoffmann hizo de los autómatas personajes centrales en algunas de sus obras más notables. El presente trabajo pretende mostrar cómo este interés revela la actitud crítica del escritor hacia un modo de concebir al ser humano que, desarrollándose paralelamente a una medicina basada en la anatomía, había desembocado en el siglo XVIII en un estado de opinión que tiene su más acabada expresión en L’homme machina, de J. O. De La Mettrie. Estos relatos, como los dedicados al magnetismo animal, nos parecen hoy un grito de alerta frente a una de las consecuencias de esa concepción mecánica del ser humano: el despliegue del «biopoder», o de la «biopolítica», conceptos formulados por Foucault en sus últimas obras; pero también frente a los riesgos que entraña la voluntad prometeica de la modernidad.

  8. Re-evaluation of the criticality experiments of the ''Otto Hahn Nuclear Ship'' reactor

    Energy Technology Data Exchange (ETDEWEB)

    Lengar, I.; Snoj, L.; Rogan, P.; Ravnik, M. [Jozef Stefan Institute, Ljubljana (Slovenia)

    2008-11-15

    Several series of experiments with a FDR reactor (advanced pressurized light water reactor) were performed in 1972 in the Geesthacht critical facility ANEX. The experiments were performed to test the core prior to its usage for the propulsion of the first German nuclear merchant ship ''Otto-Hahn''. In the present paper a calculational re-evaluation of the experiments is described with the use of the up-to date computer codes (Monte-Carlo code MCNP5) and nuclear data (ENDF/B-VI release 6). It is focused on the determination of uncertainties in the benchmark model of the experimental set-up, originating mainly from the limited set of information still available about the experiments. Effects of the identified uncertainties on the multiplication factor were studied. The sensitivity studies include parametric variation of material composition and geometry. The combined total uncertainty being found 0.0050 in k{sub eff}, the experiments are qualified as criticality safety benchmark experiments. (orig.)

  9. Anestesia venosa total (AVT em lactente com doença de Werdnig-Hoffmann: relato de caso Anestesia general intravenosa (AVT en lactante con enfermedad de Werdnig-Hoffmann: relato de caso Total intravenous anesthesia (TIVA in an infant with Werdnig-Hoffmann disease: case report

    Directory of Open Access Journals (Sweden)

    Marco Antonio Cardoso de Resende

    2010-04-01

    Full Text Available JUSTIFICATIVA E OBJETIVOS: A doença de Werdnig-Hoffmann é a causa mais comum de hipotonia no lactente e quando presente logo após o nascimento tem pior prognóstico. Fraqueza muscular simétrica, arreflexia e fasciculações da língua são característicos. A maioria dos lactentes morre antes dos dois anos por insuficiência respiratória. O presente relato apresenta um caso com técnica venosa total durante anestesia. RELATO DO CASO: Paciente feminina, branca, um ano, 10 kg, estado físico ASA III, com doença de Werdnig-Hoffmann diagnosticada desde os dois meses de idade. Candidata à gastrostomia e fundogastroplicatura na técnica aberta e traqueostomia. Monitorização com cardioscópio, pressão arterial não invasiva, oxímetro de pulso, estetoscópio precordial e temperatura retal após venóclise. Foi préoxigenada e após bolus de atropina (0,3 mg foi realizada indução anestésica com remifentanil bolus (20 µg e propofol (30 mg. Após intubação traqueal foi ventilada de forma controlada manual, em sistema sem absorvedor de CO2, Baraka (sistema Mapleson D, FGF de 4 L.min-1, FiO2 0,5 (0(2/N(20. Mantida sob anestesia com propofol 250 µg.kg-1.min-1 e remifentanil 0,3 µg.kg-1.min-1 em infusão contínua manual. O tempo cirúrgico foi de 150 minutos. O despertar ocorreu 8 minutos após o término da infusão, com ventilação espontânea. Duas horas depois foi transferida para unidade pediátrica e recebeu alta hospitalar no 4º dia de pós-operatório. CONCLUSÕES: A escolha da técnica anestésica prioriza a segurança que advém da familiaridade do manuseio dos fármacos existentes. Em crianças com doenças neuromusculares, a anestesia venosa total com remifentanil e propofol em sistemas de infusão, pela duração de ação extremamente curta, pode influenciar a evolução da doença favoravelmente.JUSTIFICATIVA Y OBJETIVOS: La enfermedad de Werdnig-Hoffmann es la causa más común de hipotonía en el lactante y cuando est

  10. Short-term locomotor adaptation to a robotic ankle exoskeleton does not alter soleus Hoffmann reflex amplitude.

    Science.gov (United States)

    Kao, Pei-Chun; Lewis, Cara L; Ferris, Daniel P

    2010-07-26

    To improve design of robotic lower limb exoskeletons for gait rehabilitation, it is critical to identify neural mechanisms that govern locomotor adaptation to robotic assistance. Previously, we demonstrated soleus muscle recruitment decreased by approximately 35% when walking with a pneumatically-powered ankle exoskeleton providing plantar flexor torque under soleus proportional myoelectric control. Since a substantial portion of soleus activation during walking results from the stretch reflex, increased reflex inhibition is one potential mechanism for reducing soleus recruitment when walking with exoskeleton assistance. This is clinically relevant because many neurologically impaired populations have hyperactive stretch reflexes and training to reduce the reflexes could lead to substantial improvements in their motor ability. The purpose of this study was to quantify soleus Hoffmann (H-) reflex responses during powered versus unpowered walking. We tested soleus H-reflex responses in neurologically intact subjects (n=8) that had trained walking with the soleus controlled robotic ankle exoskeleton. Soleus H-reflex was tested at the mid and late stance while subjects walked with the exoskeleton on the treadmill at 1.25 m/s, first without power (first unpowered), then with power (powered), and finally without power again (second unpowered). We also collected joint kinematics and electromyography. When the robotic plantar flexor torque was provided, subjects walked with lower soleus electromyographic (EMG) activation (27-48%) and had concomitant reductions in H-reflex amplitude (12-24%) compared to the first unpowered condition. The H-reflex amplitude in proportion to the background soleus EMG during powered walking was not significantly different from the two unpowered conditions. These findings suggest that the nervous system does not inhibit the soleus H-reflex in response to short-term adaption to exoskeleton assistance. Future studies should determine if the

  11. Facilitation of Hoffmann reflexes of ankle muscles in prone but not standing positions by focal ankle-joint cooling.

    Science.gov (United States)

    Kim, Kyung-Min; Ingersoll, Christopher D; Hertel, Jay

    2015-05-01

    Focal ankle-joint cooling (FAJC) has been shown to increase Hoffmann (H) reflex amplitudes of select leg muscles while subjects lie prone, but it is unknown whether the neurophysiological cooling effects persist in standing. To assess the effects of FAJC on H-reflexes of the soleus and fibularis longus during 3 body positions (prone, bipedal, and unipedal stances) in individuals with and without chronic ankle instability (CAI). Crossover. Laboratory. 15 young adults with CAI (9 male, 6 female) and 15 healthy controls. All subjects received both FAJC and sham treatments on separate days in a randomized order. FAJC was accomplished by applying a 1.5-L plastic bag filled with crushed ice to the ankle for 20 min. Sham treatment involved room-temperature candy corn. Maximum amplitudes of H-reflexes and motor (M) waves were recorded while subjects lay prone and then stood in quiet bipedal and unipedal stances before and immediately after each treatment. Primary outcome measures were H(max):M(max) ratios for the soleus and fibularis longus. Three-factor (group × treatment condition × time) repeated-measures ANOVAs and Fisher LSD tests were performed for statistical analyses. Significant interactions of treatment condition by time for prone H(max):M(max) ratios were found in the soleus (P = .001) and fibularis longus (P = .003). In both muscles, prone H(max):M(max) ratios moderately increased after FAJC but not after sham treatment. The CAI and healthy groups responded similarly to FAJC. In contrast, there were no significant interactions or main effects in the bipedal and unipedal stances in either muscle (P > .05). FAJC moderately increased H-reflex amplitudes of the soleus and fibularis longus while subjects were prone but not during bipedal or unipedal standing. These results were not different between groups with and without CAI.

  12. Scientists from all over the world attend the 2007 - Frederic Joliot/Otto Hahn Summer School on Nuclear Reactors, 'Physics, Fuels and Systems'; Wissenschaftler aus aller Welt bei der 2007 Frederic Joliot/Otto Hahn Summer School on Nuclear Reactors 'Physics, Fuels and Systems'

    Energy Technology Data Exchange (ETDEWEB)

    Fischer, U.; Sanchez-Espinoza, V.H. [Forschungszentrum Karlsruhe (Germany). Inst. fuer Reaktorsicherheit

    2007-12-15

    For more than ten years, the Frederic Joliot/Otto Hahn Summer School has been organized alternately by the Karlsruhe Research Center in Germany and the French Commissariat a l'Energie Atomique (CEA), Cadarache, in France. This year, the Summer School was held at the Center for Advanced Training in Technology and the Environment of the Karlsruhe Research Center on August 29 to September 7. The overarching topic of the event was the sustainability of nuclear power, including topical issues of generation-IV reactor concepts, transmutation and actinide separation, and geologic final storage. Next year's Frederic Joliot/Otto Hahn Summer School will be organized by CEA at Aix-en-Provence together with the Nuclear Safety Research Program of the Karlsruhe Research Center. (orig.)

  13. Síndrome de Werdnig-Hoffmann (atrofia muscular espinal de la infancia). Presentación de un caso y revisión en la literatura

    OpenAIRE

    Jairo Claret Rodríguez Hernández, MD; Eder Ariel Lancheros García; Silvia Cristina Martínez Rueda

    2010-01-01

    El síndrome de Werdnig-Hoffmann o atrofia muscular espinal (AME) de la infancia es una enfermedad de patrón autosómico recesivo de origen neuromuscular y degenerativo, poco prevalente en la población general, y que se caracteriza por la destrucción de las neuronas motoras del asta anterior de la medula espinal debido a alteraciones cromosómicas.La enfermedad no tiene tratamiento, es de mal pronóstico y, por lo general, culmina con la muerte del menor en los primeros años de vida por dificulta...

  14. A figura do gato como capa para considerações mais profundas : Lope de Vega, E. T. A. Hoffmann, T. S. Eliot

    OpenAIRE

    Zamith, Maria Cândida

    2014-01-01

    Cats have traditionally been writers' favourite pets. And writers who love cats often write about them or in their names. Among many others, Lope de Vega, E. T. A. Hoffmann and T. S. Eliot did. It is fascinating to analyse how three very different authors, living centuries apart in distinct countries, and writing different kinds of poetry or prose, found a similar way to express their opinions or secret grievances about women's inconstancy and the fallacy of love vows. The three of them lent ...

  15. Don Juan: eine Tragödie. Intertestualità faustiana e riscrittura tragica nel racconto di E. T. A. Hoffmann

    Directory of Open Access Journals (Sweden)

    Francesco Marola

    2017-11-01

    Full Text Available Il mito letterario di don Giovanni, sorto nella commedia, attorno al 1800 viene riformulato in direzione del tragico. La trasformazione inizia con la versione operistica di Mozart-Da Ponte e trova compimento nel racconto di Hoffmann, che proietta il nuovo tono tragico del finale mozartiano su tutto il mito. L’articolo intende porre in rilievo la presenza nel Don Juan di numerosi richiami intertestuali al Faust di Goethe, finora non pienamente rilevati dalla critica, attraverso i quali è possibile leggere tale riscrittura tragica come una dichiarata sintesi dei due miti, in cui don Giovanni assume il ruolo di Faust-Mefistofele e donna Anna quello di Gretchen. La riscrittura del mito culmina nel finale rispecchiamento del narratore in Anna-Gretchen. Ma il valore del tragico è relativizzato in Hoffmann dall’ironica autocoscienza dell’artista romantico: confinato nel mondo fantastico dell’arte, risulta privo di senso nella prosaica realtà della vita borghese.

  16. Anestesia venosa total (AVT em lactente com doença de Werdnig-Hoffmann: relato de caso Anestesia venosa total (AVT en lactante con enfermedad de Werdnig-Hoffmann: relato de caso Total intravenous anesthesia (TIVA in an infant with Werdnig-Hoffmann disease: case report

    Directory of Open Access Journals (Sweden)

    Luis Otavio Esteves

    2010-10-01

    Full Text Available Foi com grande interesse que li o artigo "Anestesia Venosa Total (AVT em Lactente com Doença de Werdnig-Hoffmann. Relato de Caso", de Resende e col. ¹, publicado nesta revista. Gostaria, em primeiro lugar, de parabenizar os autores pela iniciativa. Entretanto, dois pontos me chamaram a atenção. O primeiro refere-se à definição de lactente, a qual compreende o período de 1 a 12 meses de idade. A partir de 12 meses, define-se como pré-escolar ou apenas criança. No artigo, o autor coloca a idade do paciente como 1 ano, mas não especifica meses ou dias. Provavelmente, esse paciente tem mais de 12 meses, sendo, dessa forma, a definição de lactente inadequada. O segundo e mais importante ponto diz respeito à técnica usada e ao título do artigo. No título, utilizou-se a expressão "anestesia venosa total", mas no relato foi dito que, além de propofol e remifentanil, a anestesia foi mantida com oxigênio e N2O. Se foi usado um gás com propriedades anestésicas (N2O, não seria correto classificar essa técnica como venosa total. Além disso, ele cita o artigo de Crawford e col. ², que definiu doses de remifentanil para intubação em crianças. Esse estudo foi realizado utilizando-se oxigenação na concentração de 100%, pois os autores provavelmente entendem que a adição de gases com propriedades anestésicas interferiria nos resultados obtidosFue con un gran interés que leí el artículo "Anestesia Venosa Total (AVT en Lactante con Enfermedad de Werdnig-Hoffmann. Relato de Caso", de Resende y col. ¹, publicado en esta revista. Y de hecho quiero, en primer lugar, felicitar a los autores por la iniciativa. Sin embargo, dos puntos me llamaron la atención. El primero, se refiere a la definición de lactante, la cual abarca el período de 1 a 12 meses de edad. A partir de los 12 meses, se define como preescolar o apenas como niño. En el artículo, el autor coloca la edad del paciente como de 1 año, pero no especifica meses o d

  17. Scientists from all over the world attended the 'Frederic Joliot/Otto Hahn Summer School 2011' at the Karlsruhe Institute of Technology (KIT)

    International Nuclear Information System (INIS)

    Sanchez, Victor H.; Fischer, Ulrich

    2011-01-01

    The Karlsruhe Institute of Technology (KIT) and the Commissariat r leEnergie Atomique et Aux Energies Alternatives (CEA), Cadarache, alternate in organizing the annual 'Frederic Joliot/Otto Hahn Summer School.' This year's event, the 17th since its inception, was held in Karlsruhe, Germany on August 25 to September 3. Its topic was 'High-fidelity Modeling for Nuclear Reactors: Challenges and Prospects.' Here is a list of the subjects covered: - Status and perspectives of modeling and its role in design, operation, and safety. - Thermal hydraulics of nuclear reactors and simulation of 2 phase flows. - Structural mechanics, structure? fluid interaction, and seismic safety. - Advanced simulation in neutronics and reactor physics. - Progress in simulating fuel and materials behavior. - Multiphysics and uncertainty analysis methods. Experts from eight leading international research institutions and universities presented, and discussed with the 59 participants from 19 countries, the current state of the art and most recent development trends in the subjects listed above. (orig.)

  18. Scientists from all over the world attend the ''Frederic Joliot/Otto Hahn Summer School 2009'' at the Karlsruhe Institute of Technology (KIT)

    International Nuclear Information System (INIS)

    Sanchez Espinoza, Victor Hugo; Fischer, Ulrich

    2009-01-01

    The ''Frederic Joliot/Otto Hahn Summer School'' is organized each year alternately by the Karlsruhe Institute of Technology and the Commissariat a l'Energie Atomique (CEA), Cadarache. This year's Summer School, the 15th since its foundation, was run at the Advanced Training Center (FTU) of KIT Campus Nord on August 26 to September 4. The key topic this year was ''The Challenges in Implementing Fast Reactor Technology.'' These are the items discussed: Principles and challenges of future fast reactor designs, Fuels, fuel cycle, and recycling of minor actinides, Innovative cladding tube and structural materials, Special aspects of coolants and the challenges they pose, Fast reactor safety. Experts from 8 leading international research establishments and universities presented and discussed with the 58 participants from 16 countries the current state of the art and the latest development trends in the topics listed above. (orig.)

  19. Scientists from all over the world attend the ''Frederic Joliot/Otto Hahn Summer School 2009'' at the Karlsruhe Institute of Technology (KIT); Wissenschaftler aus aller Welt bei der ''Frederic Joliot/Otto Hahn Summer School 2009'' am Karlsruhe Institute of Technologie (KIT)

    Energy Technology Data Exchange (ETDEWEB)

    Sanchez Espinoza, Victor Hugo; Fischer, Ulrich [Karlsruhe Inst. of Tech. (KIT), Campus Nord/Inst. for Neutron Physics and Reactor Tech. (INR), Eggenstein-Leopoldshafen (Germany)

    2009-11-15

    The ''Frederic Joliot/Otto Hahn Summer School'' is organized each year alternately by the Karlsruhe Institute of Technology and the Commissariat a l'Energie Atomique (CEA), Cadarache. This year's Summer School, the 15th since its foundation, was run at the Advanced Training Center (FTU) of KIT Campus Nord on August 26 to September 4. The key topic this year was ''The Challenges in Implementing Fast Reactor Technology.'' These are the items discussed: Principles and challenges of future fast reactor designs, Fuels, fuel cycle, and recycling of minor actinides, Innovative cladding tube and structural materials, Special aspects of coolants and the challenges they pose, Fast reactor safety. Experts from 8 leading international research establishments and universities presented and discussed with the 58 participants from 16 countries the current state of the art and the latest development trends in the topics listed above. (orig.)

  20. Basicladia chelonum (Collins W.E. Hoffmann et Tilden (Chlorophyta, Cladophorophyceae from Cuba (Caribbean: new observation of the ultrastructure of its vegetative cells

    Directory of Open Access Journals (Sweden)

    Joanna Czerwik-Marcinkowska

    2011-01-01

    Full Text Available Basicladia chelonum (Collins W.E. Hoffmann and Tilden (1930 principally known from North America and Hawaii was recently (2004 found in Cuba (Caribbean from artificial pool growing on shells of musk turtles (Trachemys decussata Gray. Specimens collected in Cuba were subjected to detailed examinations also using a transmission electron microscope. On one hand, these studies confirmed many features of this species previously described by earlier authors in the specimens from Texas. On the other hand, the present studies revealed structures unknown so far (pyrenoid structure, which allowed for new analysis of this species. These investigations also have shown that Basicladia chelonum exhibits close similarity to the genus Cladophora and other representatives of the class Cladophorophyceae. The similarities include : siphonocladous level of organization of thallus, numerous chloroplasts forming a network and other structures. Conversely, the pyrenoid in vegetative cells of Basicladia chelonum distinguishes it markedly from representatives of the genus Cladophora, which have bilenticular pyrenoids divided into two hemispheres by a single thylakoids and each hemisphere is covered by a bowlshaped starch grain (Van Hoek et al. 1995. Since in Cladophora the ultrastructure of the pyrenoid is highly constant and characteristic, this contrasts with the genus Basicladia and, therefore, more firmly establishes position of the latter as an independent unit within Cladophorophyceae.

  1. Walén test and de Hoffmann-Teller frame of interplanetary large-amplitude Alfvén waves

    International Nuclear Information System (INIS)

    Chao, J. K.; Hsieh, Wen-Chieh; Lee, L. C.; Yang, L.

    2014-01-01

    In this study, three methods of analysis are compared to test the Walén relation. Method 1 requires a good de Hoffmann-Teller (HT) frame. Method 2 uses three components separately to find the frame that is slightly modified from Method 1. This method is intended to improve the accuracy of the HT frame and able to demonstrate the anisotropic property of the fluctuations. The better the relation is, the closer the slope of a regression fitting the data of plasma versus Alfvén velocities is to 1. However, this criterion is based on an average HT frame, and the fitted slope does not always work for the Walén test because the HT frame can change so fast in the high-speed streams. We propose Method 3 to check the Walén relation using a sequence of data generated by taking the difference of two consecutive values of plasma and Alfvén velocities, respectively. The difference data are independent of the HT frame. We suggest that the ratio of the variances between plasma and Alfvén velocities is a better parameter to qualify the Walén relation. Four cases in two solar wind streams are studied using these three methods. Our results show that when the solar wind HT frame remains stable, all three methods can predict Alfvénic fluctuations well, but Method 3 can better predict the Walén relation when solar wind contains structures with several small streams. A simulated case also demonstrates that Method 3 is better and more robust than Methods 1 and 2. These results are important for a better understanding of Alfvénic fluctuations and turbulence in the solar wind.

  2. Scientists and professionals from all around the world in Karlsruhe. Frederic Joliot/Otto Hahn summer school 2013 on nuclear reactors 'Physics, Fuels and Systems'

    Energy Technology Data Exchange (ETDEWEB)

    Sanchez-Espinoza, V.H.; Fischer, U. [Karlsruhe Institute of Technology (KIT), Eggenstein-Leopoldshafen (Germany). Scientific Secretariat FJOHSS

    2014-02-15

    Every 2 years the Karlsruhe Institute of Technology (KIT) organizes the Frederic Joliot/Otto Hahn (FJOH) Summer School together with the Commissariat a l'-Energie Atomique (CEA) since 1999. In 2013, the FJOH Summer School took place in Karlsruhe from 21 to 30 August. The topic of this year's school was 'Advanced Nuclear Systems with Transuranium Fuels'. Experts from internationally well recognized research institutions and Universities from USA, Japan, Asia and Europe gave lectures about the current status and trends on the related fields. (orig.)

  3. Scientists from all over the world attended the 'Frederic Joliot/Otto Hahn Summer School 2011' at the Karlsruhe Institute of Technology (KIT); Wissenschaftler aus aller Welt bei der 'Frederic Joliot/Otto Hahn Summer School 2011' am Karlsruhe Institute of Technology (KIT)

    Energy Technology Data Exchange (ETDEWEB)

    Sanchez, Victor H.; Fischer, Ulrich [Karlsruhe Institute of Technology (KIT), Eggenstein-Leopoldshafen (DE). Inst. for Neutron Physics and Reactor Technology (INR)

    2011-12-15

    The Karlsruhe Institute of Technology (KIT) and the Commissariat r leEnergie Atomique et Aux Energies Alternatives (CEA), Cadarache, alternate in organizing the annual 'Frederic Joliot/Otto Hahn Summer School.' This year's event, the 17th since its inception, was held in Karlsruhe, Germany on August 25 to September 3. Its topic was 'High-fidelity Modeling for Nuclear Reactors: Challenges and Prospects.' Here is a list of the subjects covered: - Status and perspectives of modeling and its role in design, operation, and safety. - Thermal hydraulics of nuclear reactors and simulation of 2 phase flows. - Structural mechanics, structure? fluid interaction, and seismic safety. - Advanced simulation in neutronics and reactor physics. - Progress in simulating fuel and materials behavior. - Multiphysics and uncertainty analysis methods. Experts from eight leading international research institutions and universities presented, and discussed with the 59 participants from 19 countries, the current state of the art and most recent development trends in the subjects listed above. (orig.)

  4. Hoffmann's syndrome: a case report

    Directory of Open Access Journals (Sweden)

    Ibrahim, Mohammad

    2005-07-01

    Full Text Available This syndrome is characterized by the presence of hypothyroidism with myxoedema, muscle stiffness and pseudo hypertrophy. We describe the disorder in a 21 year old male, who got admitted with complaints of generalized weakness, cold intolerance, constipation, and hoarse voice, difficulty in walking and progressive enlargement of muscles of thighs and back with crampy pains for two years. Examination revealed mild mental retardation, enlarged tongue, dry and rough skin, enlargement of thighs and back muscles, motor weakness in flexors of hips and knees with delayed relaxation of deep tendon reflexes. Investigations revealed evidence of hypothyroidism with marked elevation of muscle enzymes. Following institution of replacement therapy with thyroxine, the patient showed marked clinical and biochemical improvements after six months, but insignificant decrease in muscle mass. In this report we review relevant literature.

  5. Hahn-Meitner-Institut. Annual report 1994

    International Nuclear Information System (INIS)

    1995-01-01

    The report reflects the reorganisation of the HMI in 1994. The focus is now on structure research and solar energy research, and new fields or research are being defined in the context of these two fields. Nuclear physics and marginal fields are being reduced, and the research and service departments of the HMI have been reorganized. The research projects in radiation chemistry and nuclear physics were discontinued, and the VICKSI accelerator originally constructed for nuclear physics was modified for the purposes of solid state and materials research and is now called 'Ionen-Strahl-Labor Berlin (ISL)'. Another change in the year under report was the establishment of a department of theoretical solid state physics and the reorientation of the department of semiconductor elements from problems of radiation exposure to the technology and availability of solar cells. (orig./DG) [de

  6. Woodward–Hoffmann Rules At Your Fingertips!

    Indian Academy of Sciences (India)

    In the idealised transition state, the orbital on the migrating hydrogen and the p orbitals of the π unit form a Hückel framework (Figure 6). Counting the electrons in the migrating σ bond and those in the π part, it is clear that [1,3]-hydride shift is. Figure 6. Typical sigma- tropic shifts are shown. The topology of the interacting.

  7. Hahn-Meitner-Institute. Annual report 1991

    International Nuclear Information System (INIS)

    1992-01-01

    The institute's activities comprised a wide range of different fields of research in the recent years. This annual report gives a survey of the diverse research results of 1991. The targets of the 14 research programs (nuclear physics, photochemical energy conversion, structure research, information technology) are briefly described. Lists are given of the subjects treated and of the relevant publications and lectures. Some selected subjects are discussed. (orig./BBR) [de

  8. Production of Short-Lived Radionuclides at the Hahn-Meitner Institute in West Berlin; Production de Radionuclides a Courte Periode a l'Institut Hahn-Meitner de Berlin-Ouest; ПРОИЗВОДСТВО КОРОТКОЖИВУЩИХ РАДИОИЗОТОПОВ В ИНСТИТУТЕ ХАНА-МАЙТНЕРА В ЗАПАДНОМ БЕРЛИНЕ; Produccion de Radionuclidos de Periodo Corto en el Instituto Hahn-Meitner de Berlin Occidental

    Energy Technology Data Exchange (ETDEWEB)

    Felix, F. W.; Pirrwitz, D.; Szabo de Bucs, E. [Hahn - Meitner-Institut fuer Kern Forschung, Berlin, Federal Republic of Germany (Germany)

    1963-03-15

    The Hahn-Meitner Institute for Nuclear Research has produced short-lived radionuclides for medical and scientific purposes in the West Berlin area since 1960. Production now covers, the nuclides commonly used in medical applications, such as Na{sup 25}, K{sup 42} and Au{sup 198}, and other outstanding nuclides such as Cu{sup 64}, Zn{sup 69m} and F{sup 18}; Na{sup 24} and K{sup 42}are produced by neutron irradiation of the chlorides and, after calibration, distributed as solid material; Au{sup 198} is irradiated in metallic form, which is suitable for implantation in cancer therapy; F{sup 18} is produced by the reaction 0{sup 16} (t, n) and irradiation of LiNO{sub 3}. The separation of F{sup 18} by ion exchange showed better results than those usually given in the literature. For the production of Cu{sup 64} and Zn{sup 69m} special electrolytic methods have been developed to extract the radionuclides produced by a Szilard- Chalmers reaction on the phthalocyanines. Both nuclides have found application in medical diagnostics. In the paper details are given of irradiation facilities and techniques, production methods and apparatus, essay and calibration of the radionuclides produced and production capacity. (author) [French] Depuis 1960, l'Institut de recherches nucleaires Hahn-Meitner produit des radionucleides a courte periode a usage medical et scientifique pour la region de Berlin-Ouest. L'Institut prepare maintenant des nucleides utilises couramment en medecine tels que {sup 25}Na, {sup 42}K et {sup 198}Au, ainsi que quelques autres nucleides moins usuels comme {sup 64}Cu, {sup 69m}Zn et {sup 18}F. Le sodium-24 et le potassium-42 sont produits par irradiation neu- tronique des chlorures et distribues sous forme solide apres etalonnage. L'or-198 est irradie sous forme metallique, utilisable pour les implantations dans le traitement du cancer. Le fluor-18 est produit par la reaction {sup 16}0 (t, n) et par irradiation de LiNO{sub 3}. La separation de {sup 18}F par

  9. Development of DNA barcodes of genus Lygus Hahn (Hemiptera: Miridae)

    Science.gov (United States)

    The genus Lygus (Hemiptera: Miridae) is an important group of insects that contains 43 known species worldwide. Some species within this genus are important agricultural pests in North America. Annual economic impacts in cotton, Gossypium hirsutum L., from Lygus spp. due to yield losses and control ...

  10. Hahn-Meitner-Institut Berlin, Ionenstrahllabor. Annual report 2003

    International Nuclear Information System (INIS)

    Bertschrat, H.H.; Roehrich, J.; Schiwietz, G.

    2004-01-01

    The following topics are dealt with: Material structure and dynamics, materials analysis, applications of ion beams in fabrications, nuclear physics, accelerator operations and technical developments, eye tumor therapy. (HSI)

  11. Hahn-Meitner-Institut Berlin, Ionenstrahllabor. Annual report 2003

    Energy Technology Data Exchange (ETDEWEB)

    Bertschrat, H H; Roehrich, J; Schiwietz, G

    2004-07-01

    The following topics are dealt with: Material structure and dynamics, materials analysis, applications of ion beams in fabrications, nuclear physics, accelerator operations and technical developments, eye tumor therapy. (HSI)

  12. Hahn-Meitner-Institut Berlin, Ionenstrahllabor. Annual report 2004

    International Nuclear Information System (INIS)

    Roehrich, J.; Schiwietz, G.; Sielemann, R.

    2005-06-01

    The following topics are dealt with: Ion-molecule and ion-solid interactions, materials modification, materials analysis and structural determination, operation and developments of the accelerator facility, radiation dosimetry and therapy, nuclear-structure studies of the isotopoes 14,16,17 C. (HSI)

  13. Taastatud Pilistvere pastoraat / Dolores Hoffmann, Helmi Seil, Vello Rajangu

    Index Scriptorium Estoniae

    Hoffmann, Dolores, 1937-

    2006-01-01

    7 ill.; fotod: Tiit Koha; kontoriruumi akent ehib Dagmar ?(Dolores) Hoffmanni vitraaž, seinal on Helmi Seili ristpistes tikitud Eesti kaart, talvekirikus Vello Rajangu Pallase päevil loodud inglikuju

  14. Review: The Robben Island Shakespeare by Matthew Hahn ...

    African Journals Online (AJOL)

    London: Bloomsbury Methuen Drama, 2017). ISBN-10: 147428387X / ISBN-13: 978-1474283878. Full Text: EMAIL FULL TEXT EMAIL FULL TEXT · DOWNLOAD FULL TEXT DOWNLOAD FULL TEXT · http://dx.doi.org/10.4314/sisa.v30i1.12S.

  15. Hahn-Meitner-Institut Berlin. Programme budget 1995. Planning period 1993 to 1998

    International Nuclear Information System (INIS)

    Moehring, K.; Roberstson, T.

    1995-01-01

    This edition is the first one that has been published after a break of several years. It especially documents the realisation of the ''structure plan HMI 1995, which was agreed on at the end of 1993. In the medium-term this plan wants the institute to focus on the main subjects ''structure and dynamics of condensed material'' and ''solar energy research''. (orig./HP) [de

  16. Dolores Hoffmann pani Türi kiriku aknad särama / Marge Laagemann

    Index Scriptorium Estoniae

    Laagemann, Marge

    2005-01-01

    vitraažikunstnik räägib Türi kiriku vitraažidest, oma teekonnast vitraažide juurde, vitraažide valmistamisest, nende tekkest, ajaloost ning mõjust. Järgneb 2005. 9. dets., lk. 9, 16. dets., lk. 7, 23. dets., lk. 11 ja 30. dets., lk. 7

  17. Hahn AB, Germany (West). Revised Uniform Summary of Surface Weather Observations (RUSSWO). Parts A-F.

    Science.gov (United States)

    1982-08-09

    70 9 71*3 735 sś 71,5 76,2 76,7 76,7 7607 768 . 8 76.i 7LA. -900 43.5 6*.t 64.1 65.8 72.9 73*3 75.8 77.0 77.5 7807 79o2 79.2 79.2 79.41 79.4, 79.4p 800...97.6 97.6o 97.6 97.6 417.6 97.6 97.6 5000__ 1 AL.) aii 49 2 .5fl.jA .ifJ aL5 spt s.iiS I5 qA --anii-nqsrsn rsa q 2! 4500 44.1 50.5 51.6 52.2~ 53.9’ 53.9...81.2.180 6 : 3: 7711- 800 60.6 73.6 76.31 7 80 1 80.2 81.4, 81.6 81.7 81.9! 81.9, 81.9 81.9, 81.9 81.9 81.9, ’ i 63 5 768 79.51 80.9! 835 83. 84.7

  18. Hahn AB, Hunsbruck, Germany. Revised Uniform Summary of Surface Weather Observations (RUSSWO). Parts A-F

    Science.gov (United States)

    1978-09-29

    FREQUENCY OF WIND DIRECTION AND SPEED (FROM HOURLY OBSERVATIONS) 34_D5_ 1 hf.H A / -/ rJC< L:: P .,-’l 7 STAMIn SIAT..AS II I""n SSy. __ _L r nl :..T...opposite > 0. Froa the table: Visibility>, 3 Iles -95.-I%. Visibility> 2 Iles - 96.9%. Viaibility > 1 Ile - 96.3%. EM4PLE j3 To Obtain combintions of celling ...VERSUS VISIBILITY A;IR E, T-"F S 7 " " PERCENTAGE FREQUENCY OF OCCURRENCE (FROM HOURLY OBSERVATIONS) CEll , tWINSIB4ITY STATUTE MILES C,00 I/IN- . I

  19. Eesti tooraine: ebakvaliteetne või ülehinnatud? / Martin Hoffmann

    Index Scriptorium Estoniae

    Hoffmann, Martin

    2010-01-01

    Eesti müüdava liha, kala, köögivilja päritolust, kodumaise toodangu kvaliteedist. Asjatundjate hinnangul on Eestis küll väga head liha ja juurvilja, kuid nende kvaliteet kõigub ja tarnestabiilsus on halb. LM Keskuse müügijuhi Helgor Markovi, Horeca Sevice'i juhatuse liikme Raul Vaeti ja restoran Gloria peakoka Dmitri Demjanovi arvamusi ja hinnanguid

  20. Studies on Colombian cryptogams XVIII. The genus Stereocaulon (Schreber) Hoffmann (Lichenès)

    NARCIS (Netherlands)

    Boekhout, T.

    1982-01-01

    Nineteen species of Stereocaulon are treated from the northern Andes, mainly from Colombia. Descriptions and keys are given, with notes on the north-Andean distribution and ecology. Seven species are new for the Colombian flora, viz. St. atlanticum, St. claviceps, St. corticatulum (chem. strain with

  1. Die Kritik am romantischen Ideal in E. T. A. Hoffmanns «Der goldene Topf»

    Directory of Open Access Journals (Sweden)

    Jasmin Marjam Rezai Dubiel

    2013-11-01

    Full Text Available E. T. A. Hoffmann’s Der Goldene Topf portrays fantasy and the ideal of romantic aestheticism as utopian on a metafictional level. However, another possibility should be considered: the temporary contemplation within poetry compensates for the loss of belief in the poeticization of the world as conceived by Novalis. The artistic entity cannot immerse itself in the romantic ideal. Since the narrator becomes part of the story and a victim of his imagination, the narration presents a critical viewpoint of the concept of genius.

  2. NS OTTO HAHN - test report no. 27 for the period from 5-8-1976 to 25-8-1977

    International Nuclear Information System (INIS)

    1977-01-01

    Several voyages to Rio de Janeiro, Montevideo, and Durban are reported on as well as stays in the shipyard. In these reports, the programme of operation is explained, and the technical incidents are described. For the period between August 25th, 1976, and June 17th, 1977, the development of thermal power is given in the form of power histograms. (UA) [de

  3. Experience with W3Re/W25Re thermocouples in fuel pins of NS Otto Hahn's two cores

    International Nuclear Information System (INIS)

    Kolb, M.

    1976-01-01

    The paper first deals with the installation of 18 and 9 high-temperature sheathed thermocouples in fuel rods of the cores FDR-1 and FDR-2, respectively. The measured fuel rod centerline temperatures could be related to the local linear rod power at any given time by means of the densities of fission products with different half-lives obtained from fuel rod γ-scans. The fuel temperatures show then already an increase with the burn-up of the FDR-1 which becomes steeper when taking into account the decrease of the EMF measured at irradiated thermocouples taken from the fuel rods. Finally, the determination of effective thermocouple time constants and of fuel rod heat transfer time constants is demonstrated by utilizing the reactor noise to measure the transfer function between neutron flux and fuel temperature signal. (orig.) [de

  4. Annual report 1990 of the Heavy Ion Physics Department of Hahn-Meitner-Institut Berlin GmbH

    International Nuclear Information System (INIS)

    Eichler, J.; Oertzen, W. von; Lindenberger, H.; Homeyer, H.; Michaelsen, R.

    1991-05-01

    The efficiency of the VICKSI accelerator has again been enhanced by experiments with new ion beams using the isotopes C-14, Fe-54, Se-82, and I-127. Nuclear physics research work investigated hot nuclei, nuclear structures and reaction mechanisms. The research team in solid state physics studied selected problems in connection with heavy ion-solid interactions, deep implantation processes and thin-film structures. There is a complete survey of the scientific publications and lectures. (DG) [de

  5. Nissi Maarja kiriku kooriruumi kahe vitraažakna restaureerimine / H. Beyermann, Illar Kannelmäe, Dolores Hoffmann

    Index Scriptorium Estoniae

    Beyermann, H.

    2005-01-01

    4 ill.; aknad valmistas Riia meister H. Beyermann, ühel aknal on kujutatud evangelist Johannest, teisel apostel Peetrust; töid teostasid Dolores Hoffmanni juhendamisel OÜ Domini Canes meistrid B. Morejev, S. Ganin ja A. Bruk, kaitseklaaside projekti tegi Illar Kannelmäe

  6. On the need for nuclear waste management. Keynote address by the award winner on the occasion of the Otto Hahn Prize awarding ceremony 1988

    Energy Technology Data Exchange (ETDEWEB)

    Baumgaertner, F.

    1988-06-01

    One may find reasons justifying one's hopes in the sun or wind or other sources of energy to replace nuclear energy, or even reasons justifying the selfish attitude of those who believe that, for our lifetime, money will buy us enough fossil fuels to continue, but all this may not and must not let us close our eyes to the main problem that must be solved in the next few decades: disposal of the nuclear wastes. Shutting down all nuclear power plants would not free us from the problem at all. In 1986, medical and research establishments and industry have produced more than twice the amount of medium level and low level radioactive waste than have the nuclear power plants. However, even if we would place our hopes in the solar power plant and decide to abandon nuclear power, and even if society would also be prepared to close down the nuclear medical departments of the hospitals, to prohibit the use of radioactive substances by research and industry, we still would have to cope for a certain transitional period with the spent fuel accumulated so far, so that safe reprocessing and disposal of radioactive wastes is a problem remaining in any case.

  7. CARACTERIZACIÓN MORFOLÓGICA Y ANATÓMICA DEL GÉNERO STEREOCAULON HOFFMANN (ASCOMYCETES-LIQUENIZADOS EN COLOMBIA

    Directory of Open Access Journals (Sweden)

    ANGÉLICA RINCÓN-ESPITIA

    2013-12-01

    Full Text Available El género Stereocaulon presenta una gran plasticidad en sus estructuras morfológicas y anatómicas, que de no ser reconocidas se puede recaer en errores taxonómicos a nivel intraespecífico. Por esta razón, se presenta una diferenciación morfoanatómica de los caracteres diagnósticos: los filocladios, los cefalodios y los soredios para facilitar el proceso de identificación taxonómica. En esta contribución se reconocen 19 especies junto con cinco variedades de Stereocaulon para Colombia, se amplían los datos de distribución geográfica y se incluye una clave taxonómica para la identificación de las especies en el país.

  8. Der Stellenwert des Lebenszyklus für das Überleben der uferbewohnenden Wolfspinnenarten Pardosa wagleri (Hahn, 1822 und Pirata knorri (Scopoli, 1763

    Directory of Open Access Journals (Sweden)

    Manderbach, Randolf

    2001-04-01

    Full Text Available Quantitative, time-limited samplings in monthly intervals from June 1995 to August 1996, in combination with the measurement of carapace width of juvenile and adult spiders has revealed the life cycle patterns of the riparian wolf spiders Pardosa wagleri and Pirata knorri and showed the effect of floods on their abundance at the Isar River (Germany, Bavaria. Adults and juvenile spiders are heavily affected by floods but the populations of both species are able to recover quickly. The life cycles of both species are synchronized with the season and display a spring/summer stenochrony. P. wagleri shows a second reproductive phase in early summer. This reproductive behaviour supports the persistence of populations in this disturbed environment.

  9. Undergraduate Science Students are Uncertain of How to Find Facts in E-books Compared to Print Books. A Review of: Berg, S. A., Hoffmann, K., & Dawson, D. (2010. Not on the same page: Undergraduates' information retrieval in electronic and print books. The Journal of Academic Librarianship, 36(6, 518-525.

    Directory of Open Access Journals (Sweden)

    Christina E. Carter

    2011-06-01

    Full Text Available Objective – To observe and compare the strategies that undergraduate science students use to perform information retrieval tasks in e-books and in print books.Design – Qualitative analysis, employing a “prompted think-aloud” methodology and thematic analysis.Setting – Taylor Library (serving the Faculty of Science, University of Western Ontario, London, Ontario, Canada.Subjects – Twenty undergraduate science students (11 females, 9 males who had completed at least two years of study in Faculty of Science programs at the University of Western Ontario.Methods – Participants for the study were recruited through informational posters in Taylor Library, science departments, and in undergraduate science classes. Participants were assigned fact-finding tasks in e-book and print versions of eight health, computer science, and engineering textbooks and handbooks available in the Taylor Library. Book titles and tasks are included in a table in the study. Each student completed four tasks using e-books and four tasks using print books. Half of the participants performed tasks in print books first, and half began with tasks in e-books. Print books were “pre-selected” for each participant. The e-books were all from the same platform: Electronic Book Library. Participants were provided with a laptop computer to access the e-book versions, and a list of questions or facts to locate within each book. Following the methodology of Cotton & Gresty (2006, one researcher prompted students to verbalize actions while performing assigned tasks. A second researcher captured audio and video of the laptop screen as students individually conducted their e-book searches. A third researcher took notes on each session. An exit survey was given to each participant, asking about previous use, knowledge, and attitudes towards e-books. Thematic analysis was then used to examine the collected data.Main Results – Researchers identified four major themes from the data with regard to use of print versus e-books: linear/non-linear strategies; tangible/intangible aspects of books; met/unmet expectations; and transferable/non-transferable behaviours. Researchers found that participants tended to search print books in a linear fashion, whereas they approached e-books non-linearly. Physicality and familiarity with print books helped participants more readily find answers, compared to e-books, where students tried less successfully to mimic techniques used in print books to locate requested information. Participants used indexes in print books, versus e-books where they did not quickly identify the e-books as having them. The students expected that the e-books would behave as other web-based/online sources or search engines would (such as Google books, and commented that they did not. Transferable actions between print and e-books included developing and using keywords for searching.Conclusion – The authors of this study found that student participants did not know how to navigate the e-books presented to them compared with their print counterparts. There was a lack of awareness on the part of participants about e-books in general: the students were unaware that e-books were available through the library catalogue; they did not know that e-books have indexes as print books do; and did not know the differences among platforms offered by the library. All of these facts point to the importance of user education. The authors note the importance of testing of e-book platforms by students, faculty, and librarians prior to committing to purchase particular platforms. The authors note that more research is needed on user interaction with e-books, how e-books are used to assimilate information, and how groups other than undergraduates search e-books.

  10. Bioindikation im Grundwasser funktioniert - Erwiderung zum Kommentar von T. Scheytt zum Beitrag "Grundwasserfauna als Indikator für komplexe hydrogeologische Verhältnisse am westlichen Kaiserstuhl" von Gutjahr, S., Bork, J. & Hahn, H.J. in Grundwasser 18 (3), 173-184 (2013)

    Science.gov (United States)

    Hahn, Hans Jürgen; Gutjahr, Simon

    2014-09-01

    In seinem Kommentar schließt Traugott Scheytt die faunistische Bioindikation über die Nutzung von Grundwassermessstellen aus methodischen Gründen aus. Er postuliert auch, dass die faunistische Indikation hydrogeologischer Zusammenhänge wegen der eingeschränkten Ausbreitungsfähigkeit der Tiere in Porengrundwasserleitern nicht möglich sei und stellt grundsätzlich die Befunde unserer Untersuchungen am Kaiserstuhl in Frage. Dabei überträgt Herr Scheytt seine Erfahrungen aus der unbelebten Hydrogeologie direkt auf den Lebensraum Grundwasser. Seine Argumentation berücksichtigt dabei weder die Prinzipien der Ökologie noch den aktuellen Stand der grundwasserökologischen Forschung. Wir gehen davon aus, dass für die Untersuchungen am Kaiserstuhl sowohl unsere Arbeitshypothese wie auch die angewandten Methoden und die Interpretation der Ergebnisse der Fragestellung angemessen sind und internationalem, wissenschaftlichem Standard entsprechen. Aus den oben benannten Gründen bleiben wir dabei: Biondikation im Grundwasser funktioniert und sie bietet hervorragende Möglichkeiten, gerade auch für die Hydrogeologie.

  11. A Graduate Degree in Library or Information Science Is Required, but not Sufficient, to Enter the Profession. A Review of: Reeves, R., & Hahn, T. (2010. Job advertisements for recent graduates: Advising, curriculum, and job-seeking implications. Journal of Education for Library and Information Science, 51(2, 103-119.

    Directory of Open Access Journals (Sweden)

    Nazi Torabi

    2011-03-01

    Full Text Available Objective – To analyze the current state of the job market for recent MLS or MLIS graduates.Design – Content analysis of job postings.Setting – Online library or archival job advertisements published between 15 April, 2006 and 10 May, 2009 and collected from two national library publications (American Libraries and Library Journal, two electronic lists (Maryland's iSchool Discussion list and the Archives and Archivists list sponsored by the Society of American Archivists, two Internet job banks (USAJobs.gov and LISJobs.com, and several local chapters of library and archival organizations in the South Atlantic region of the United States.Subjects – 1,042 online library or archival job advertisements. Salary data were obtained from 401 available online job advertisements.Methods – The methodology for collection and content analysis of job ads was adapted from earlier studies, with slight modification wherever appropriate. The following criteria for selecting the ads were applied:• Ad says "entry-level"• No mention of professional experience• No experience or duties impossible for entry-level librarians to gain• Only ads that required an MLS or MLIS degree from an ALA-accredited institution• Part-time or temporary positions of less than nine months were excluded The authors removed duplicated job postings and identified three major areas of content analysis. Table 1 lists a brief summary of these areas and further sub-categories for each area. The content analysis was performed using a custom Microsoft Access database for data organization and storage and Microsoft Excel spreadsheet for data manipulation. SPSS was used for statistical analysis.Main Results – The two largest represented institution types for library positions were academic (63.6% and public (17.5%. For archival positions, the academic (62.7% and "other" (25.4% institutions rank first and second. When the job ads were broken down into the position types, which were covering a wide range of responsibilities, the greatest numbers of entry-level library positions are found to be public service (52.2% and technical services (23.9% positions. The two largest represented position types in archives are technical services (50.7 % and generalist (40.5%.While average salaries increased slightly over the four years of study, there is a more significant increase in the salaries of positions posted in 2009. The highest average salaries were found to be $43K for archivists working for government and $60K for library positions in the "other" category. In addition, the number of entry-level positions has increased from year to year over this period.Social competencies such as communication, collaboration and team work, and service orientation were the most emphasized traits for novice librarians and archivists. General information technology skills and knowledge of technical services were the most common skills required for both library and archive positions. Overall, the entry-level job postings did not require non-professional experience. However, 13.6% of the library and 18.7% of the archival positions required supervisory experience. Experience with preservation of physical objects and the knowledge of programming and mark-up languages were also common requirements for archives positions. Instructional and reference experience ranks the second and third essential skills for librarians.Conclusion – Based on the research results, a graduate degree in library or information science is required, but not sufficient, to enter the profession. Practical experience, either through internships, co-op programs, or part-time or full-time employment, is essential for new graduates seeking employment, but the majority of postings do not require a subject expertise, second Master’s degree, or knowledge of a foreign language. Since the job content analysis in this study only evaluated broad components of library services and archival operation, it might not provide sufficient data on new trends in the job market for the MLS curriculum review.

  12. Multivariable biorthogonal continuous--discrete Wilson and Racah polynomials

    International Nuclear Information System (INIS)

    Tratnik, M.V.

    1990-01-01

    Several families of multivariable, biorthogonal, partly continuous and partly discrete, Wilson polynomials are presented. These yield limit cases that are purely continuous in some of the variables and purely discrete in the others, or purely discrete in all the variables. The latter are referred to as the multivariable biorthogonal Racah polynomials. Interesting further limit cases include the multivariable biorthogonal Hahn and dual Hahn polynomials

  13. Evaluation of the Safety and Efficacy of Excimer Laser Keratorefractive Surgery in U.S. Army Soldiers using the latest Battlefield Technologies

    Science.gov (United States)

    2007-04-01

    Kossendrup D, Wiederholt M, Hoffmann F. Influence of cyclosporin A, dexamethasone, and benzalkonium chloride (BAK) on corneal epithelial wound healing...1032–1037. 3. Kossendrup D, Wiederholt M, Hoffmann F. Influence of cyclosporin A, dexamethasone, and benzalkonium chloride (BAK) on corneal...efficacy of WFG LASIK and WFG PRK by assessing improvement of uncorrected visual acuity, achievement of intended refractive correction, and reduction of

  14. Commentary on "Patient-reported outcomes after 3-dimensional conformal, intensity-modulated, or proton beam radiotherapy for localized prostate cancer." Gray PJ, Paly JJ, Yeap BY, Sanda MG, Sandler HM, Michalski JM, Talcott JA, Coen JJ, Hamstra DA, Shipley WU, Hahn SM, Zietman AL, Bekelman JE, Efstathiou JA. Harvard Radiation Oncology Program, Boston, MA.: Cancer 2013;119(9):1729-35. doi: 10.1002/cncr.27956. [Epub 2013 Feb 22].

    Science.gov (United States)

    Gottschalk, Alexander

    2014-04-01

    Recent studies have suggested differing toxicity patterns for patients with prostate cancer who receive treatment with 3-dimensional conformal radiotherapy (3DCRT), intensity-modulated radiotherapy (IMRT), or proton beam therapy (PBT). The authors reviewed patient-reported outcomes data collected prospectively using validated instruments that assessed bowel and urinary quality of life (QOL) for patients with localized prostate cancer who received 3DCRT (n = 123), IMRT (n = 153) or PBT (n = 95). Clinically meaningful differences in mean QOL scores were defined as those exceeding half the standard deviation of the baseline mean value. Changes from baseline were compared within groups at the first post-treatment follow-up (2-3 months from the start of treatment) and at 12 months and 24 months. At the first post-treatment follow-up, patients who received 3DCRT and IMRT, but not those who received PBT, reported a clinically meaningful decrement in bowel QOL. At 12 months and 24 months, all 3 cohorts reported clinically meaningful decrements in bowel QOL. Patients who received IMRT reported clinically meaningful decrements in the domains of urinary irritation/obstruction and incontinence at the first post-treatment follow-up. At 12 months, patients who received PBT, but not those who received IMRT or 3DCRT, reported a clinically meaningful decrement in the urinary irritation/obstruction domain. At 24 months, none of the 3 cohorts reported clinically meaningful changes in urinary QOL. Patients who received 3DCRT, IMRT, or PBT reported distinct patterns of treatment-related QOL. Although the timing of toxicity varied between the cohorts, patients reported similar modest QOL decrements in the bowel domain and minimal QOL decrements in the urinary domains at 24 months. Prospective randomized trials are needed to further examine these differences. © 2013 Published by Elsevier Inc.

  15. Lise Meitner

    International Nuclear Information System (INIS)

    2014-01-01

    This paper is a collection of articles concerning the biography of Lise Meitner with special regards to her cooperation with Otto Hahn in the discovery of nuclear fission, whereby the role of women in science, especially physics, are considered. (HSI)

  16. A transcriptome survey spanning life stages and sexes of the Harlequin bug, Murgantia histrionica

    Science.gov (United States)

    The harlequin bug, Murgantia histrionica (Hahn), is an agricultural pest in the continental United States, particularly in southern states. Reliable gene sequence data are especially useful to the development of species-specific, environmentally friendly molecular biopesticides and effective biolure...

  17. Waiting for the ice to thaw

    International Nuclear Information System (INIS)

    Jager, W.; Schroeder, E.

    1976-01-01

    The prospects for the economical operation of nuclear ships is discussed. The basis for this is the hitherto successful operation of the 'Otto Hahn'. Planning aims at a 80,000 shp container ship. (UA) [de

  18. The philosophy of Hans-Georg Gadamer / Wolfgang Drechsler

    Index Scriptorium Estoniae

    Drechsler, Wolfgang, 1963-

    1998-01-01

    Rets.rmt.: The philosophy of Hans-Georg Gadamer : a review of the philosophy of Hans-Georg Gadamer / Lewis Edwin Hahn, ed. Chicago and La Salle, IL: Open Court, 1997. (The Library of Living Philosophers, vol. XXIV)

  19. THE PRODUCTION OF A LOW DIETARY BULK DENSITY CASSAVA

    African Journals Online (AJOL)

    iya beji

    ABSTRACT. Fermentation is an ancient food-processing technique, employed in the preparation of cassava flours for home consumption. ... The flour obtained is cooked to form a stiff paste, which is consumed with a stew [Hahn, 1989].

  20. Download this PDF file

    African Journals Online (AJOL)

    Dr Olaleye

    genetic background, in brain slice preparations in normal and high K+ conditions, we studied the effect of 4 ..... (2013) used an interface recording chamber, superfused with ... experimental and computer modeling studies (Hahn et al., 2001 ...

  1. Wolfgang Pauli at the 6th meeting of the Nobel Prize laureates

    CERN Multimedia

    Franz Thorbecke, Lindau

    1956-01-01

    From left to right : ?, Max Born, Paul Adrien Maurice Dirac, Adolf Friedrich Johann Butenandt, ?, Otto Hahn, Wolfgang Pauli, Franca Pauli, Sir Chandrasekhara Venkata Raman, Isidor Isaac Rabi, and Leopold Ruzicka

  2. Lise Meitner; Lise Meitner

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2014-11-15

    This paper is a collection of articles concerning the biography of Lise Meitner with special regards to her cooperation with Otto Hahn in the discovery of nuclear fission, whereby the role of women in science, especially physics, are considered. (HSI)

  3. Comparative Study of Different Processing Methods for the ...

    African Journals Online (AJOL)

    MBI

    2014-06-07

    Jun 7, 2014 ... production of food energy, year-round availability and tolerance to stress condition (Hahn and Keyser,. 1985). Cassava is a major source of ... compounds releases hydrocyanic acid (HCN) which is of great concern for human ...

  4. ©Sierra Leone Journal of Biomedical Research Vol. 2 (2) pp. 95-102 ...

    African Journals Online (AJOL)

    Owner

    Electronic Technology, China) and intraocular pressure with Keeler Pulsair EasyEye ... biometric indexes used in assessing the corneal health status (Hahn et al., 2003). It provides valid information about the physiological condition of.

  5. Henoch-Schönlein purpura

    Science.gov (United States)

    ... FF, eds. Ferri's Clinical Advisor 2017 . Philadelphia, PA: Elsevier; 2017:562.e1-563.e1. Hahn D, Hodson ... JG, ed. Emergency Medicine . 2nd ed. Philadelphia, PA: Elsevier Saunders; 2013:chap 22. Jennette JC, Falk RJ, ...

  6. Patterns of cephalic indexes in three West African populations

    African Journals Online (AJOL)

    USER

    Key words: Cephalic, mesocephalic, gender, culture, West Africa. INTRODUCTION ..... The biology of human adaptability, Oxford. University Press, Oxford, pp. ... Development and Evolution of Brain Size, Hahn, Jensen and. Brududec (eds) ...

  7. African Review of Economics and Finance: Submissions

    African Journals Online (AJOL)

    The African Review of Economics and Finance is a peer-reviewed, scholarly ... financial markets and institutions, asset pricing, forecasting, impact of culture and ... In: Friedman BM, Hahn FH (Eds), Handbook of monetary economics, vol.1.

  8. Quantum Variational Calculus

    OpenAIRE

    Malinowska , Agnieszka B.; Torres , Delfim

    2014-01-01

    International audience; Introduces readers to the treatment of the calculus of variations with q-differences and Hahn difference operators Provides the reader with the first extended treatment of quantum variational calculus Shows how the techniques described can be applied to economic models as well as other mathematical systems This Brief puts together two subjects, quantum and variational calculi by considering variational problems involving Hahn quantum operators. The main advantage of it...

  9. Proceedings of the 12th Army Symposium on Solid Mechanics, ’Synergism of Mechanics Mathematics and Materials’ 4-7 November 1991, Plymouth, Massachusetts.

    Science.gov (United States)

    1991-11-07

    Sliding Contact With Temperature Dependent Bearing Steel Material Properties - V. Gupta, P. Bastias , G. Hahn and C. Rubin...TEMPERATURE DEPENDENT BEARING STEEL MATERIAL PROPERTIES V. Gupta, P. Bastias , G. Hahn and C. Rubin, Vanderbilt University 10: 15-10:30 am. BREAK 10:30-11:00...diameter. Its chemical composition is given in Table 1. The spheroidizing treatment involves austenitizing at 900’C for 1 hour, quenching in agitated ice

  10. Maru ühendatud : Poesie United esines Tartus / Priit Kruus

    Index Scriptorium Estoniae

    Kruus, Priit

    2005-01-01

    23. mail esinesid Tartus saksa, ameerika, prantsuse ja eesti luuletajad spoken word-kirjandusüritusega "Poesie united". Osalesid Wehwalt Koslovsky, Tobias Hoffmann, Milo Martin, Ben Porter Lewis, Antoine Faure, Jürgen Rooste, Asko Künnap ja fs

  11. Poesie United toob kirjanduspeo

    Index Scriptorium Estoniae

    2005-01-01

    23. mail toimub Tartus rahvusvaheline kirjanduspidu "International spoken word subversion 2005" eesti, saksa, prantsuse ja ameerika sõnakunstnikega: Wehwalt Koslovsky, Tobias Hoffmann, Ben Porter Lewis, Milo Martin, Antoine Faure. Vt ka Postimees, 21. mai, lk. 26

  12. Ginsbergi vennaskond, värskelt ühendatud / Marko Mägi

    Index Scriptorium Estoniae

    Mägi, Marko

    2005-01-01

    Poetry slami laadis luuleõhtul "Poesie United" esinesid 21. mail KuKu klubis Wehwalt Koslovsky, Tobias Hoffmann (Saksamaa), Ben Porter Lewis, Milo Martin (USA), Antoine Faure (Prantsusmaa), fs, Asko Künnap, Jürgen Rooste

  13. 78 FR 68476 - Notice of Lodging of Proposed Consent Decree Under the Comprehensive Environmental Response...

    Science.gov (United States)

    2013-11-14

    ..., General Electric Company, GlaxoSmithKline, LLC, Goodrich Corporation, HCR ManorCare, Inc., Hoffmann-La..., Inc., L.E. Carpenter & Company, LANXESS Corporation, Mack Trucks, Inc., Merck & Co., Inc., Momentive...

  14. Symbols for the General British English Vowel Sounds

    Science.gov (United States)

    Lewis, J. Windsor

    1975-01-01

    Deals with the critique of Hans G. Hoffmann saying that the new phonetic symbols contained in A. S. Hornby's "Advanced Learner's Dictionary" (Oxford University Press, London, 1974) are harder to learn than the older system of transcription. (IFS/WGA)

  15. Genetics Home Reference: 2-hydroxyglutaric aciduria

    Science.gov (United States)

    ... Ben-Omran T, Hoffmann GF, de Lonlay P, McDonald MT, Meberg A, Muntau AC, Nuoffer JM, Parini ... 10 All Bulletins Features What is direct-to-consumer genetic testing? What are genome editing and CRISPR- ...

  16. Who says no to a good cup of joe? / Kristi Martin

    Index Scriptorium Estoniae

    Martin, Kristi

    2016-01-01

    Tutvustus: Moldvaer, Anette. Coffee Obsession. London, 2014; Hoffmann, James. The world atlas of coffee. London, 2014; Steiman, Shawn. The Little Coffee Know-It-All. Massachusetts, 2015; Stephenson, Tristan. The Curious Barista's Guide to Coffee. London, 2015

  17. 76 FR 59141 - Determination That LOXITANE (Loxapine Succinate) Capsules and Three Other Drug Products Were Not...

    Science.gov (United States)

    2011-09-23

    ... Applicant NDA 017525 LOXITANE (loxapine Watson Laboratories succinate) Inc., 417 Wakara Capsules, Way, Suite.../milliliter. NDA 020828 FORTOVASE Hoffmann La Roche (saquinavir) Inc., 340 Kingsland Capsule, 200 mg. St...

  18. Effects of Formulated Glyphosate and Adjuvant Tank Mixes on Atomization from Aerial Application Flat Fan Nozzles

    Science.gov (United States)

    2012-01-01

    Bradley K. Fritz,1 W. Clint Hoffmann,1 and W. E. Bagley2 Effects of Formulated Glyphosate and Adjuvant Tank Mixes on Atomization from Aerial...Application Flat Fan Nozzles REFERENCE: Fritz, Bradley K., Hoffmann, W. Clint, and Bagley, W. E., “Effects of Formulated Glyphosate and Adjuvant Tank Mixes on...factors. Twelve spray-solution treatments were evaluated, ten of which contained a formulated glyphosate product and nine of these con- tained an

  19. The advertisement call of Ameerega pulchripecta (Silverstone, 1976)(Anura, Dendrobatidae).

    Science.gov (United States)

    Costa-Campos, Carlos Eduardo; Lima, Albertina Pimentel; Amézquita, Adolfo

    2016-07-06

    The name Ameerega picta was once used to denote a lineage of poison frogs (Dendrobatidae) distributed throughout most of the Amazon basin (Silverstone 1976); more recently, to describe a phenetic group involving at least 18 species, Lötters et al. (2007) pointed out that some of the lineages were indeed derived from the former A. picta. Among them, the nominal species with the widest distribution is A. hahneli (Haddad & Martins 1994; Twomey & Brown 2008), also an alleged complex of poorly defined species (Grant et al. 2006; Fouquet et al. 2007; Roberts et al. 2007). The mate-recognition signal, the advertisement call, was part of the evidence used to revalidate A. hahneli as a different species from A. picta. Although the advertisement call has been described for one or few individuals of other species in the group (Haddad & Martins 1994; Costa et al. 2006; Twomey & Brown 2008; Lötters et al. 2009), namely A. flavopicta, A. braccata and A. boehmei, and A. hahneli, we still lack a formal description for A. pulchripecta, the sister taxon of A. hahneli (Twomey & Brown 2008). Its call has been qualitatively described as similar to A. hahneli's call, but "deeper-voiced" (Lötters et al. 2007).

  20. How fission was discovered

    International Nuclear Information System (INIS)

    Fluegge, S.

    1989-01-01

    After the great survey of neutron induced radioactivity by Fermi and co-workers, the laboratories in Paris and Berlin-Dahlen tried to disentangle the complex results found in uranium. At that time neutron sources were small, activities low, and equipment very simple. Chemistry beyond uranium still was unknown. Hahn and Meitner believed to have observed three transuranic isomeric chains, a doubtful result even then. Early in 1938, Curie and Savic in Paris found an activity interpreted to be actinium, and Hahn and Meitner another to be radium. Both interpretations seemed impossible from energy considerations. Hahn and Strassmann, therefore, continued this work and succeeded to separate the new activity from radium. There remained no doubt that a barium isotope had been produced, the uranium nucleus splitting in the yet-unknown process we now call fission

  1. Port entry of nuclear ships differences, procedures and conditions

    International Nuclear Information System (INIS)

    McMichael, D.; Bianchi, H.

    1978-01-01

    There are about 250 nuclear propelled ships, only 2 of them are merchant ships: the US freighter Savannah and the bulk carrier Otto Hahn of the Federal Republic of Germany. This paper is restricted to the experience with both of these ships, showing partly similar and partly different procedures for port entry. They have called at 107 ports in 40 countries. The Savannah was operated in the periods from 1962 - 1971 and the Otto Hahn is still in operation. The endeavours of the OECD and IMCO to review and to harmonize international rules for nuclear merchant ships should be supported and continued

  2. Lise Meitner A Life in Physics

    CERN Document Server

    Sime, Ruth Lewin

    1996-01-01

    Lise Meitner (1878-1968) was a pioneer of nuclear physics and co-discoverer, with Otto Hahn and Fritz Strassmann, of nuclear fission. Braving the sexism of the scientific world, she joined the prestigious Kaiser Wilhelm Institute for Chemistry and became a prominent member of the international physics community. Of Jewish origin, Meitner fled Nazi Germany for Stockholm in 1938 and later moved to Cambridge, England. Her career was shattered when she fled Germany, and her scientific reputation was damaged when Hahn took full credit-and the 1944 Nobel Prize-for the work they had done together on

  3. Progress report no. 2, 1981-1984. Arbeitsgruppe Strahlenschaeden in Festkoerpern

    International Nuclear Information System (INIS)

    1984-10-01

    This progress report no. 2 refers to the work performed for the R and D project 3.2 'Radiation Damage in Solids' of the Hahn-Meitner-Institut fuer Kernforschung, Berlin in the period 1981-1984 and was prepared on the occasion of the review sessions of the committee of consultants (Wissenschaftlicher Beirat des HMI). These sessions take place in fall every year. Each project of the Hahn-Meitner-Institut is reviewed every four years. The report was edited under the guidance of C. Abromeit. (orig./RK)

  4. Vatuximab(Trademark): Optimizing Therapeutic Strategies for Prostate Cancer Based on Dynamic MR Tumor Oximetry

    Science.gov (United States)

    2010-01-01

    159: 621-631, 2003. 37. Bourke , V. A., Zhao, D., Gilio, J., Chang, C.-H., Jiang, L., Hahn, E. W., and Mason, R. P. Correlation of Radiation...probe: comparison with a paired survival assay. Radiat Res, 158, 167-73 (2002) 27. Gu, Y. Q., V. A. Bourke , J. G. Kim, A. Constantinescu, R. P. Mason...Res. 1998; 150: 549–556. 10. Bourke VA, Zhao D, Gilio J, Chang C-H, Jiang L, Hahn EW, Mason RP. Correlation of radiation response with tumor oxygen

  5. Hypergeometric series recurrence relations and some new orthogonal functions

    International Nuclear Information System (INIS)

    Wilson, J.A.

    1978-01-01

    A set of hypergeometric orthogonal polynomials, a set of biorthogonal rational functions generalizing them, and some new three-term relations for hypergeometric series containing properties of these functions are exhibited. The orthogonal polynomials depend on four free parameters, and their orthogonality relations include as special or limiting cases the orthogonalities for the classical polynomials, the Hahn and dual Hahn polynomials, Pollaczek's polynomials orthogonal on an infinite interval, and the 6-j symbols of angular momentum in quantum mechanics. Their properties include a second-order difference equation and a Rodrigues-type formula involving a divided difference operator

  6. 40 years of nuclear fission

    International Nuclear Information System (INIS)

    Koch, H.

    1979-01-01

    On the occasion of both the 100th birthday of the discoverer of nuclear fission, Otto Hahn, and the 40th anniversary of this outstanding scientific discovery the historical development is described, which led to nuclear fission. Aspects of scientific life in Berlin and in the whole world at that time are presented, and relations between scientists are characterized by quotations. In particular, stress is laid on the life and activities of Otto Hahn as a human being and as a scientist, and his outstanding scientific achievements are appreciated. (author)

  7. Una especie nueva de alacrán del género Centruroides de importancia médica (Scorpiones: Buthidae del estado de Guerrero, México A new scorpion species of medical importance of the genus Centruroides (Scorpiones: Buthidae from the state of Guerrero, Mexico

    Directory of Open Access Journals (Sweden)

    José Guadalupe Baldazo-Monsivaiz

    2013-03-01

    Full Text Available Se describe Centruroides villegasi sp. nov. del municipio de Chilapa de Álvarez, Guerrero, que es la novena especie de Centruroides registrada para el estado. Se compara con C. limpidus (Karsch, 1879 por su parecido morfológico y por habitar la misma zona geográfica. Se compara también con C. balsasensis Ponce y Francke, 2004, C. meisei Hoffmann, 1938 y C. tecomanus Hoffmann, 1932, por pertenecer al grupo "alacranes rayados" (sensu Hoffmann, 1932, por su parecido morfológico y por su registro en Guerrero. Es una especie de importancia médica que no se había recolectado o reconocido previamente. Se incluye una lista de las especies de alacranes reconocidas para Guerrero, después de actualizar datos y hacer las correcciones necesarias a los registros históricos para el estado.Centruroides villegasi sp. nov. from the municipality of Chilapa de Álvarez, Guerrero, Mexico is described. It is the nineth species of Centruroides reported for this state. The new species is compared with C. limpidus (Karsch, 1879 which is morphologically similar and inhabits the same geographic zone. The species C. balsasensis Ponce and Francke, 2004, C. meisei Hoffmann, 1938, and C. tecomanus Hoffmann, 1932 are also compared because they are found in Guerrero and belong to the "striped scorpions" group (sensu Hoffmann, 1932, and therefore they are morphologically similar to the new species. It is a species of medical importance that had not been collected or recognized previously. A list of species of scorpions recorded for the state of Guerrero is included after the revision and correction of historical records.

  8. The Genus Ixodes (Acari: Ixodidae) in Mexico: Adult Identification Keys, Diagnoses, Hosts, and Distribution (El genero Ixodes (Acari: Ixodidae) en Mexico: claves de identificacion para adultos, diagnosis, huespedes y distribucion)

    Science.gov (United States)

    2010-01-01

    also from Estado de México (Hoffmann, 1969). Hosts in Mexico. Cricetidae and Hominidae ( Homo sapiens Linnaeus, 1758) (Mammalia) (Hoffmann, 1969...distribution El género Ixodes (Acari: Ixodidae) en México: claves de identifi cación para adultos, diagnosis, huéspedes y distribución Carmen Guzmán...postdoctoral scholarship under the Programa de Formación e Incorporación de Profesores de Carrera en Facultades y Escuelas para el Fortalecimiento de la

  9. About vectors

    CERN Document Server

    Hoffmann, Banesh

    1975-01-01

    From his unusual beginning in ""Defining a vector"" to his final comments on ""What then is a vector?"" author Banesh Hoffmann has written a book that is provocative and unconventional. In his emphasis on the unresolved issue of defining a vector, Hoffmann mixes pure and applied mathematics without using calculus. The result is a treatment that can serve as a supplement and corrective to textbooks, as well as collateral reading in all courses that deal with vectors. Major topics include vectors and the parallelogram law; algebraic notation and basic ideas; vector algebra; scalars and scalar p

  10. Integrated energy data solution for energy markets of Europe: Energy Data Warehouse; Integrierte Energiedatenloesung fuer Europas Energiemaerkte: Energy Data Warehouse

    Energy Technology Data Exchange (ETDEWEB)

    Anon.

    2001-07-01

    According to Ralf Hoffmann, head of the sales department of Goerlitz Computerbau AG, integrated problem solutions for Europe's new energy markets must be developed fast, without delay and with all efforts available. [German] 'Integrierte Problemloesungen fuer Europas neue Energiemaerkte muessen schnell und investitionssicher fuer die Anwender realisiert werden. Sie dulden keinen Aufschub. Alle unternehmerische Kraft muss und wird in die Befriedigung dieser Anforderungen gelegt.' So aeussert sich der Vorstand Absatzwirtschaft der Goerlitz Computerbau AG, Ralf Hoffmann. (orig.)

  11. Carcinoembryonic antigen (CEA)

    International Nuclear Information System (INIS)

    Ephraim, K.H.; Cox, P.H.; Hamer, C.J.A. v.d.; Berends, W.; Delhez, H.

    1977-01-01

    The carcinoembryonic antigen (CEA) is a complex of antigen determinants and also the carrier of these determinants. Chemically it is a glycoprotein. Its occurrence in blood serum or urine is correlated with malignant disease. Several radioimmunoassays (RIA) have been developed, one by Hoffmann-Laroche and one by the Rotterdam Radiotherapeutic Institute. Both methods and the Hoffmann assay kit are tested. Specifications are given for isolation of the antigen, preparation of the antiserum, and the execution of the RIA. Biochemical and clinical aspects are discussed

  12. Computational Identification and Analysis of Signaling Subnetworks with Distinct Functional Roles in the Regulation of TNF Production

    Science.gov (United States)

    2016-01-04

    extract four distinct quantitative features of response timing and intensity: the trajectory peak height, the peak time, the area under the curve, and...J., 2007, 21, 325–332. 16 S. L. Werner, J. D. Kearns, V. Zadorozhnaya, C. Lynch, E. O’Dea, M. P. Boldin , A. Ma, D. Baltimore and A. Hoffmann, Genes...Werner, J. D. Kearns, V. Zadorozhnaya, C. Lynch, E. O’Dea, M. P. Boldin , A. Ma, D. Baltimore and A. Hoffmann, Genes Dev., 2008, 22, 2093–2101. 58 J

  13. Nutritional Needs in Hot Environments-Applications for Military Personnel in Field Operations

    Science.gov (United States)

    1993-04-01

    Johnson. G.F. Krause. and L. Hahn 1970 Effect of temperature on fooid and waler intake and rumen fermentation . J. Dairy Sci. 53:434-437. Glick. Z., A...purchases of fruits, salads, yogurt , and cottage cheese, as the noon-time temperature rose (significant at p < 0.05). As the temperature increased, average

  14. WA Smith: LP Vosloo, CH van Niekerkand FP Theron Gossypol, a ...

    African Journals Online (AJOL)

    with the semen of boars (Tso & Lee, 1981), rodents (Hahn,. Rusticus, Probst, Homm & Johnson, 1981), monkeys ... enzymes (Lee & MaIling, 1981; Tso & Lee, 1981;Kennedy, van der Ven, Straus, Bhattacharyya, Waller, ... 1973), Lindsey, Hawkins & Guthrie (1980) showed that diets supplying 24 g free gossypol per lactating ...

  15. 50 years of nuclear fission

    International Nuclear Information System (INIS)

    Hilscher, D.

    1989-01-01

    The article tells the story of the discovery of nuclear fission in Berlin 50 years ago by Otto Hahn and Fritz Strassmann in cooperation with Lise Meitner. 50 years later nuclear fission is still a subject of research. Some question remain unanswered. Selected new research results are used to discuss the dynamics of the collective movement of the elementary nuclear fission process. (orig.) [de

  16. Genetics Home Reference: ethylmalonic encephalopathy

    Science.gov (United States)

    ... 0004.2010.01457.x. Citation on PubMed García-Silva MT, Ribes A, Campos Y, Garavaglia B, Arenas ... R, Lamantea E, Mandel H, Balestri P, Garcia-Silva MT, Vollmer B, Rinaldo P, Hahn SH, Leonard ...

  17. Sturm–Schrödinger equations: Formula for metric

    Indian Academy of Sciences (India)

    University of Stellenbosch, 2008). [4] F G Scholtz, H B Geyer and F J W Hahne, Ann. Phys. (N.Y.) 213, 74 (1992). [5] M Znojil, SIGMA 4, 001 (2008), arXiv overlay: 0710.4432v3 [math-ph]. [6] A Messiah, Quantum mechanics I (North Holland, ...

  18. Quantum communication through a spin chain with interaction determined by a Jacobi matrix

    International Nuclear Information System (INIS)

    Chakrabarti, R; Van der Jeugt, J

    2010-01-01

    We obtain the time-dependent correlation function describing the evolution of a single spin excitation state in a linear spin chain with isotropic nearest-neighbour XY coupling, where the Hamiltonian is related to the Jacobi matrix of a set of orthogonal polynomials. For the Krawtchouk polynomial case, an arbitrary element of the correlation function is expressed in a simple closed form. Its asymptotic limit corresponds to the Jacobi matrix of the Charlier polynomial, and may be understood as a unitary evolution resulting from a Heisenberg group element. Correlation functions for Hamiltonians corresponding to Jacobi matrices for the Hahn, dual Hahn and Racah polynomials are also studied. For the Hahn polynomials we obtain the general correlation function, some of its special cases and the limit related to the Meixner polynomials, where the su(1, 1) algebra describes the underlying symmetry. For the cases of dual Hahn and Racah polynomials, the general expressions of the correlation functions contain summations which are not of hypergeometric type. Simplifications, however, occur in special cases.

  19. The Czech Approach to Outdoor Adventure and Experiential Education: The Influence of Jaroslav Foglar's Work

    Science.gov (United States)

    Jirásek, Ivo; Turcova, Ivana

    2017-01-01

    While key personalities often connected with the roots of outdoor education and experiential learning, like Dewey, Seton, Hahn or Naess, are well known internationally, Jaroslav Foglar, a Czech outdoor and experiential educator, is mostly unknown to the international audience. The article adds to the literature related to Czech outdoor experience…

  20. Fooling the harlequin bug (Hemiptera: Pentatomidae) using synthetic volatiles to alter host plant choice

    Science.gov (United States)

    Harlequin bug, Murgantia histrionica (Hahn) (Hemiptera: Pentatomidae), is a widespread invasive pest that feeds on a variety of brassicaceous crops and other plants. To understand olfactory cues which mediate host-finding, and possible utility in pest management, we deployed aggregation pheromone (m...

  1. Annual report 1972

    International Nuclear Information System (INIS)

    1972-01-01

    The report deals with the development of Geesthacht research centre, the research facilities (NS 'Otto Hahn', FRG-1 and FRG-2, ANEX), research and development projects, cooperation with industry and other research facilities, as well as with publications and lectures of 1972. (orig./AK) [de

  2. Retraction of "Women's Preference for Attractive Makeup Tracks Changes in Their Salivary Testosterone".

    Science.gov (United States)

    2016-03-01

    At the request of the authors, the following article has been retracted by the Editor and publishers of Psychological Science:Fisher, C. I., Hahn, A. C., DeBruine, L. M., & Jones, B. C. (2015). Women's preference for attractive makeup tracks changes in their salivary testosterone. Psychological Science, 26, 1958-1964. doi:10.1177/0956797615609900. © The Author(s) 2016.

  3. HMI scientific report - chemistry 1987

    International Nuclear Information System (INIS)

    1989-01-01

    Results of the R and D activities of the Radiation Chemistry Department, Hahn-Meitner-Institut, are reported, primarily dealing with the following subjects: Interface processes and energy conversion, high-energy photochemistry and radiation chemistry as well as trace elements chemistry. A list of publications and lectures is added and gives a view on results obtained in research and development. (EF) [de

  4. TASCC newsletter volume 10 no. 1

    International Nuclear Information System (INIS)

    Thomson, L.

    1996-01-01

    A newsletter produced by Chalk River's Tandem Accelerator Superconducting Cyclotron Facility. Included in this January issue of TASCC is an update of the facility, letters of support to the government for research to continue at Chalk River Laboratories, home page on the Internet, collaboration on Vsystem with the Hahn-Meitner Institute and a listing of January's experiments. 1 fig

  5. Influence of Gender and Leg Dominance on Q-angle among Young

    African Journals Online (AJOL)

    JAIYESIMI

    17 - 30 years and the influence of leg dominance and gender on the Q-angle. Four hundred healthy ... for the Q-angle can be ascribed to methodological differences in measurement ..... Hahn, T. and Foldspan, A. (1997) The Q-angle and sport.

  6. Lise Meitner and fission: Fallout from the discovery

    International Nuclear Information System (INIS)

    Sime, R.L.

    1991-01-01

    Much has been written about Lise Meitner, but she remains on the periphery. Of her pioneering work in nuclear physics, little is said; she is remembered primarily for nuclear fission, a discovery in which she did not share. Especially in Germany the staging seldom varies: Otto Hahn in the spotlight, Fritz Strassmann in his shadow, Lise Meitner in the wings, dimly outlined in reflected light. Her role is open to speculation. One writer sees her work 'crowned by the Nobel Prize for Otto Hahn', another, once director of an institute that bears her name, portrays her as the physicist who obstructed the discovery from the start. Often she is cast as Hahn's Mitarbeiterin; sometimes she is completely invisible, as in one of the world's great science museums, which for 30 years displayed the fission apparatus-equipment assembled by Lise Meitner on a table in her laboratory in her physics section of the Kaiser-Wilhelm-Institut fuer Chemie - without ever mentioning her name. The principals themselves do not agree. In his memoirs, Hahn has remarkably little to say of this closest colleague and friend. From Lise Meitner herself we have no autobiography. Available, however, is the large collection of letters and documents she has left behind, and these make it possible for us to learn much more. (orig./BBR)

  7. Modified Strum functions method in the nuclear three body problem

    International Nuclear Information System (INIS)

    Nasyrov, M.; Abdurakhmanov, A.; Yunusova, M.

    1997-01-01

    Fadeev-Hahn equations in the nuclear three-body problem were solved by modified Sturm functions method. Numerical calculations were carried out the square well potential. It was shown that the convergence of the method is high and the binding energy value is in agreement with experimental one (A.A.D.)

  8. Facing an Uncertain Future.

    Science.gov (United States)

    1982-01-01

    apparent coincidence that the same normalization should do for time and uncertainty with Kenneth Arrow, Michael Boskin, Frank Hahn, Hugh Rose, Amartya ... Sen , and John Wise at various times, and the possible relationship between the structure of a criterion function and an information tree such as that

  9. GENE FLOW AS A GENETIC HOMOGENIZATION EVENT BETWEEN POPULATIONS OF ACROCOMIA ACULEATA (JACQ.) LODD. EX MART AND A. TOTAI MART (ARECACEAE)

    Science.gov (United States)

    Technical Abstract The taxonomy of species of the genus Acrocomia (Arecaceae) is unclear. Some authors recognize two species: the caulescent Acrocomia aculeata and the acaulescent A. hassleri (Barb. Rodr.) W. J. Hahn; while others in recognition of the high phenotypic diversity assume the presence o...

  10. Programme budget 1980

    International Nuclear Information System (INIS)

    1979-10-01

    The fields of research done in the Hahn-Meitner institute are described. These concern heavy ion physics, radiation and photochemistry, solid state physics, radiochemistry, data processing and nuclear electronics. In addition some facts concerning the infrastructure and financial planning are presented. (HSI)

  11. SACCHARIFICATION WITH Phanerochaete chrysosporium and ...

    African Journals Online (AJOL)

    cantocanche

    2011-05-09

    May 9, 2011 ... and Pleurotus ostreatus enzymatic extracts of pretreated banana ... reduction in the cost of production (Hahn-Hägerdal et al., ... economy, the saccharification of these materials is necessary ... To efficiently process lignocellulosic wastes, the lignin ..... industries depend on the success in saccharification.

  12. Music Instruction for Elementary Students with Moderate to Severe Cognitive Impairments: A Case Study

    Science.gov (United States)

    Salvador, Karen

    2015-01-01

    Although elementary general music specialists teach students with a variety of exceptionalities every day (Chen, 2007; Hahn, 2010; Hoffman, 2011), many music teacher preparation programs do not adequately address exceptionality (Salvador, 2010). Articles regarding "strategies that work" appear perennially in the professional literature…

  13. “Continental Drift”: Translation and Kimiko Hahn’s Transcultural Poetry

    Directory of Open Access Journals (Sweden)

    Xiwen Mai

    2012-06-01

    Full Text Available In the context of the expanding discourse of transnational Asian American Studies, this essay studies Kimiko Hahn, particularly her engagement with East Asian traditions in her poetry, and shows how her work exemplifies a transcultural Asian American literature that requires reading beyond the domestic boundaries of the United States. Drawing on Walter Benjamin's and Gayatri Spivak’s translation studies, it examines how Hahn critiques the assimilationist representation of Asian women in translations of Asian texts such as Arthur Waley’s version of Lady Murasaki’s The Tale of Genji. It then reads how, based on her thoughts about literary translation, Hahn experiments with creative practices of “translation,” including a retranslation of Ezra Pound’s Chinese images and untranslation of zuihitsu. Rewriting Ezra Pound’s Chinese images, Hahn reconstructs women’s voice in ancient Chinese writings. Undoing the simplistic interpretation of the classical Japanese form zuihitsu, her restorative untranslation of the form makes connections between the discursive agency of ancient Asian women writers and contemporary women poets. Thus, Hahn’s translational writing reveals a poetics of “continental drift,” a poetics that calls attention to the necessity of reading Asian American literature in transnational and transcultural contexts.

  14. GASTROENTEROPANCREATIC NEUROENDOCRINE TUMORS ...

    African Journals Online (AJOL)

    Pavel M.E., Baum U., Hahn E.G., Hensen J. Doxorubucin and streptozocin after failed biotherapy of Neuroendocrine tumors. Int J. Gastrointest Cancer 2005; 35 179-185. 33. Yao J.C., Phan A., Hoff P.M., et al. Targeting vas- cular endothelial growth factor in advanced carci- noid tumors: a random assignment phase II study.

  15. Lise Meitner (1878-1968) 'Mother of nuclear structure physics'

    Energy Technology Data Exchange (ETDEWEB)

    Armbruster, P.

    2001-03-01

    A biography of Lise Meitner is given. Especially her work in cooperation with Otto Hahn concerning the discoveries of{sup 207}Tl and {sup 234}Pa by means of recoil separation and {beta}-spectrometry as well as the discovery of fission is described. Furthermore her confrontations with racism and sexism are considered. (HSI)

  16. Extension properties of states on operator algebras

    Science.gov (United States)

    Hamhalter, Jan

    1995-08-01

    We summarize and deepen some recent results concerning the extension problem for states on operator algebras and general quantum logics. In particular, we establish equivalence between the Gleason extension property, the Hahn-Banach extension property, and the universal state extension property of projection logics. Extensions of Jauch-Piron states are investigated.

  17. A NOTE ON HEAT TOLERANCE AND THYROID FUNCTION IN ...

    African Journals Online (AJOL)

    Johnson, 1957). Yousef, Hahn & Johnson (1968) stated that the inverse relationship betrveen thyroid activity and suitability of environment provides a means of adaptation to environments above or below thermoneutral tempera- ture. ... lute-Ames Company). At 12h00 rectal and skin temperatures were recorded using ...

  18. Saksa Trakeeni Liidu külaskäik Peroni juurde / Maario Laas ; kommenteerinud Peeter Viiard

    Index Scriptorium Estoniae

    Laas, Maario

    2014-01-01

    14.-17. veebruarini külastasid Eestit Saksamaa Trakeeni Liidu turundus ja spordijuht Andre Hahn ning Andreas Loebnitz omanimelisest trakeenikasvandusest, eesmärgiga tutvuda Eestis kasvatatavate trakeenidega ja teha kaupa Trakehner Hengstmarketil ning Neumünsteri galashowl sakslastele silma jäänud Peroni asjus

  19. Neutron scattering-instrumentation at the upgraded research reactor BER II

    International Nuclear Information System (INIS)

    1991-01-01

    The Berlin Neutron Scattering Centre (BENSC) is a newly created special department of the Hahn-Meitner-Institut, in the framework of which the BER II neutron beam reactor is made available to external users. BENSC is devoted to development, continuous modernisation and maintenance of the scientific instrumets at the BER II and to the support of their users. (orig./HSI)

  20. Das „unsägliche Verbrechen“ The “Unspeakable Crime”

    Directory of Open Access Journals (Sweden)

    Angela Koch

    2006-03-01

    Full Text Available Gesa Danes Untersuchung zur Vergewaltigung in Literatur und Recht ist eine präzise Analyse literarischer „Vergewaltigungsfälle“ vor dem jeweiligen zeitgenössischen rechtlichen Hintergrund. Im Vordergrund der Betrachtung stehen Texte von Barockautoren wie Grimmelshausen, Lohenstein oder Calderón de la Barca sowie von Schriftsteller/-innen des ausgehenden 18. und 19. Jahrhunderts wie Wagner, Goethe, Kleist, Lessing oder Hahn-Hahn. Diese Texte hat Dane auf deren anthropologische Konzeptionen von Ehre, Scham und Schande und auf das Tabu des Sprechens über sexuelle Gewalt befragt.Gesa Dane’s study of Vergewaltigung in Literatur und Politik (Rape in Literature and Politics is a precise analysis of literary “rape cases” presented against the backdrop of the respective contemporary legal situations. Texts by baroque authors such as Grimmelhausen, Lohenstein or Calderón de la Barca play a prominent role, as do those by authors from the end of the eighteenth and the nineteenth centuries such as Wagner, Goethe, Kleist, Lessing or Hahn-Hahn. Dane probed these texts as to their anthropological conceptions of honor, shame, and disgrace and as to the taboo of speaking about sexual violence.

  1. Supplementary data: Association of CTLA4, CD28 and ICOS gene ...

    Indian Academy of Sciences (India)

    Supplementary data: Association of CTLA4, CD28 and ICOS gene polymorphisms with clinicopathologic characteristics of childhood IgA nephropathy in Korean population. Hak-Jae Kim, Joo-Ho Chung, Sungwook Kang, Su-Kang Kim, Byoung-Soo Cho, Sung-Do Kim and Won-Ho Hahn. J. Genet. 90, 151–155. Table 1.

  2. Carbon Nanodots: Dual‐Color‐Emitting Carbon Nanodots for Multicolor Bioimaging and Optogenetic Control of Ion Channels (Adv. Sci. 11/2017)

    OpenAIRE

    Kim, Hyemin; Park, Yoonsang; Beack, Songeun; Han, Seulgi; Jung, Dooyup; Cha, Hyung Joon; Kwon, Woosung; Hahn, Sei Kwang

    2017-01-01

    Carbon nanodots (CNDs) have been widely investigated for theranostic applications including fluorescence imaging, photoacoustic imaging, photothermal therapy, and photodynamic therapy. In article number 1700325, Sei Kwang Hahn, Woosung Kwon, and co‐workers develop dual‐color‐emitting CNDs uniquely designed by the electronic structure engineering for both futuristic multi‐color bioimaging and optogenetic control of ion channels.

  3. Lise Meitner (1878-1968) 'Mother of nuclear structure physics'

    International Nuclear Information System (INIS)

    Armbruster, P.

    2001-03-01

    A biography of Lise Meitner is given. Especially her work in cooperation with Otto Hahn concerning the discoveries of 207 Tl and 234 Pa by means of recoil separation and β-spectrometry as well as the discovery of fission is described. Furthermore her confrontations with racism and sexism are considered. (HSI)

  4. Nuclear Information and Knowledge, No. 11, June 2011

    International Nuclear Information System (INIS)

    2011-06-01

    This Newsletter contains the following: Interview with Ruth Hahn-Weinert; The 35th Consultative Meeting of INIS Liaison Officers; New INIS collection search capability; The 13th INIS/ETDE Joint Technical Committee Meeting; Regional (AFRA) Training Course on the International Nuclear Information (INIS, Rabat, Morocco, May 2011; INIS Training Seminar in Vienna, Austria in November 2011; INIS 2010 Highlights; Meetings

  5. Lise Meitner and fission: Fallout from the discovery

    Energy Technology Data Exchange (ETDEWEB)

    Sime, R.L. (Sacramento City Coll., CA (United States). Dept. of Chemistry)

    1991-08-01

    Much has been written about Lise Meitner, but she remains on the periphery. Of her pioneering work in nuclear physics, little is said; she is remembered primarily for nuclear fission, a discovery in which she did not share. Especially in Germany the staging seldom varies: Otto Hahn in the spotlight, Fritz Strassmann in his shadow, Lise Meitner in the wings, dimly outlined in reflected light. Her role is open to speculation. One writer sees her work 'crowned by the Nobel Prize for Otto Hahn', another, once director of an institute that bears her name, portrays her as the physicist who obstructed the discovery from the start. Often she is cast as Hahn's Mitarbeiterin; sometimes she is completely invisible, as in one of the world's great science museums, which for 30 years displayed the fission apparatus-equipment assembled by Lise Meitner on a table in her laboratory in her physics section of the Kaiser-Wilhelm-Institut fuer Chemie - without ever mentioning her name. The principals themselves do not agree. In his memoirs, Hahn has remarkably little to say of this closest colleague and friend. From Lise Meitner herself we have no autobiography. Available, however, is the large collection of letters and documents she has left behind, and these make it possible for us to learn much more. (orig./BBR).

  6. Program budget 1976

    International Nuclear Information System (INIS)

    1976-01-01

    The tasks, the targets, the present situation of the Hahn-Meitner-Institut, and the main fields of research, in particular nuclear and atom physics, radiation chemistry, solid-state physics, nuclear chemistry, fusion reactor technology, data processing and electronics, are dealt with. The document contains also additional data on infrastructure, budgetary accounting and organization. (orig./LN) [de

  7. Comparative evaluation of the fracture resistances of endodontically ...

    African Journals Online (AJOL)

    2014-03-30

    Mar 30, 2014 ... Nigerian Journal of Clinical Practice • Nov-Dec 2014 • Vol 17 • Issue 6. Abstract .... on chemical bonding between the resin coated Gutta‑percha ..... Weiger R, Heuchert T, Hahn R, Löst C. Adhesion of a glass ionomer cement.

  8. Examination of the Relationship between Internet Attitudes and Internet Addictions of 13-18-Year-Old Students: The Case of Kahramanmaras

    Science.gov (United States)

    Ilhan, Aziz; Çelik, H. Coskun; Gemcioglu, Muharrem; Çiftaslan, Malik Ejder

    2016-01-01

    This study aims to determine internet attitudes and internet addiction levels of 13-18-year-old students and examine the relationship between these variables. The "internet attitude scale", developed by Tavsancil and Keser (2002) and the "internet addiction scale", developed by Hahn and Jerusalem and adapted into Turkish by…

  9. 75 years ago. The discovery of nuclear fission during the neutron irradiation of uranium on 17 December 1938 in Berlin

    International Nuclear Information System (INIS)

    Kuczera, Bernhard

    2013-01-01

    A ground-breaking, scientific discovery made in the Berlin experiments of the year 1938 on neutron irradiation of uranium, was that atom nuclei can be fissured and, during the fission energy, so-called nuclear energy, is released. If further U-235 atoms are in the immediate vicinity, the released neutrons can trigger a chain reaction of the nuclear fission. The story of this ground-breaking discovery that led to the worldwide civil utilisation of nuclear energy is outlined here. The discovery of neutrons and their implementation in radiation experiments occurred in the 1930s. The research work followed the model of the Stockholm citizen Niels Bohr on the configuration of an atom. In 1930, Walther Bothe reported on the occurrence of a high-energy radiation when beryllium was irradiated with alpha-particles. James Chadwick could prove experimentally in 1932 that this is a current of high-energy, electrically neutral particles. He called these particles neutrons. In Berlin, the radio-chemist Otto Hahn is the Director at the Kaiser-Wilhelm-Institute for Chemistry and head of the chemical-radioactive department. In the years 1935 to 1938, the radiation experiments of uranium with neutrons were at the centre of the research in Berlin. In October 1938, Hahn and Strassmann responded with their own experiments to the scientific challenge of Irene Curie and Paul Savitch of 3.5-hours of activity when uranium was radiated with neutrons. The decisive discovery for the neutron radiation of uranium was made by Hahn and Strassmann on 17 December 1938. From the results of different experiments, they conclude: 'Our radium isotopes have the properties of barium.' On 19 December, Hahn informs Lise Meitner and speaking on the issue of 'Where does the barium come from?' addresses a possible 'bursting' of the uranium nucleus. That is Hahn's 'Heureka.' moment: He recognises that the neutron radiation does not only effect radiochemical transformations, but can also cause the uranium

  10. Auch eine Theorie der Moderne Another Theory of Modernity

    Directory of Open Access Journals (Sweden)

    Sabine Rohlf

    2002-11-01

    Full Text Available Barbara Hahn zeichnet die Wege schreibender Frauen durch 200 Jahre deutsch-jüdische Kulturgeschichte nach. Ausgehend von Paul Celans vieldeutiger Jüdin Pallas Athene, werden dabei stereotype Bilder der „Jüdin“, der „Intellektuellen“ und die scharfe Trennlinie zwischen humanistisch christlicher und jüdischer Tradition zur Diskussion gestellt. Mit Celans Figur schreibt sich gleichzeitig die theoretische Herausforderung in diese Studie ein, nach Ambivalenzen und Dialogen zu fragen, deren Voraussetzungen mit beispielloser Gewalt zerstört wurden. Gestützt auf Archivmaterial und veröffentlichte Texte der von ihr vorgestellten Frauen, spannt Hahn den Bogen von frühen Strategien der Assimilierung bis in die Jahre nach 1945. Das Buch ist keine Überblicksdarstellung, sondern präsentiert einzelne, einander auch überschneidende Konstellationen – intellektuelle Netzwerke, Briefwechsel, intertextuellen Transfer.Hahn traces the paths of women writers through two hundred years of German-Jewish cultural history. Using Celan’s plurivalent “Pallas Athene” as a starting point, Hahn discusses stereotypical images of “the Jew,” “the Intellectual,” and the sharp division between the humanistic Christian and the Jewish tradition. The character created by Celan functions as a theoretical challenge in this text, asking about feelings of ambivalence and dialogues which could not take place as their premises were destroyed with an unprecedented violence. Based on archival material and biographical texts about the women she uses, Hahn completes the circle between early strategies and assimilation until the post-WWII years. This book does not offer a general overview, but offers individual, overlapping constellations-intellectual networks, letters, and intertextual transfers.

  11. Santa Margarita Estuary Water Quality Monitoring Data

    Science.gov (United States)

    2018-02-01

    calibrations were conducted before the survey using standard methods. The sensor and DGPS data were downloaded to a computer after the survey and time matched...Auer, R. P., Canale, and J. P, Hoffmann. 1982. “Ecological Studies and Mathematical Modeling of Cladophora in Lake Huron: 5. Model Development and

  12. Há 100 anos, a descoberta do Treponema pallidum A hundred years ago, the discovery of Treponema pallidum

    Directory of Open Access Journals (Sweden)

    Elemir Macedo de Souza

    2005-10-01

    Full Text Available A descoberta do Treponema pallidum por Schaudinn & Hoffmann em 3 de março de 1905 foi influenciada pela comunicação de Siegel, sobre a descoberta do agente etiológico da sífilis. Encarada com ceticismo, a comunicação acarretou novas investigações, conduzidas pelo zoologista Schaudinn e pelo dermatologista Hoffmann -primeiros observadores do agente da sífilis, denominado Spirochaeta pallida. A descoberta foi o passo inicial para o desenvolvimento dos procedimentos diagnósticos e terapêuticos nos anos subseqüentes.The discovery of Treponema pallidum by Schaudinn & Hoffmann, on March 3rd 1905, was influenced by Siegels' communication on the finding of the etiological agent of syphilis. John Siegel, working at the Institut of Zoology, University of Berlin, claimed to have found a flagellate protozoon in syphilitic lesions. Because of the skepticism it was received with, this communcation yielded further investigation, conducted by zoologist Schaudinn and dermatologist Hoffmann. They were the first investigators to find the etiological agent of syphilis, described under the name of Spirochaeta pallida. The discovery of Treponema pallidum on March 3rd 1905 was the first step towards the development of diagnostic and therapeutic procedures in subsequent years.

  13. Ka luule võib olla tantsitav / Aija Sakova

    Index Scriptorium Estoniae

    Sakova, Aija, 1980-

    2005-01-01

    21. ja 23. mail esinevad Tallinnas ja Tartus saksa, ameerika, prantsuse ja eesti luuletajad spoken word-kirjandusüritustega "Poesie united". Osalevad Wehwalt Koslovsky, Tobias Hoffmann, Milo Martin, Ben Porter Lewis, Antoine Faure, Jürgen Rooste, Asko Künnap ja fs

  14. VeriML: A Dependently-Typed, User-Extensible and Language-Centric Approach to Proof Assistants

    Science.gov (United States)

    2013-01-01

    newly-arrived members of the FLINT group, especially Xinyu Feng, Alex Vaynberg, Rodrigo Ferreira, David Costanzo, Shu-Chun Weng, Jan Hoffmann and Mike...Constable, S.F. Allen, H.M. Bromley, W.R. Cleaveland, J.F. Cremer , R.W. Harper, D.J. Howe, T.B. Knoblock, N.P. Mendler, P. Panangaden, et al. Implementing

  15. Gait variability and motor control in people with knee osteoarthritis

    DEFF Research Database (Denmark)

    Alkjaer, Tine; Raffalt, Peter C; Dalsgaard, Helle

    2015-01-01

    fluctuation analysis. The motor control was assessed by the soleus (SO) Hoffmann (H)-reflex modulation and muscle co-activation during walking. The results showed no statistically significant mean group differences in any of the gait variability measures or muscle co-activation levels. The SO H...

  16. Grazing incidence polarized neutron scattering in reflection ...

    Indian Academy of Sciences (India)

    journal of. January 2012 physics pp. 1–58. Grazing incidence polarized ..... atomic distances, the neutron has an energy which is low compared to molecular binding ...... cores and that of the Co ions in the AF oxide coatings. ...... [32] C Leighton, M R Fitzsimmons, P Yashar, A Hoffmann, J Nogus, J Dura, C F Majkrzak and.

  17. Assessing Physiological Response to Toxic Industrial Chemical Exposure in Megacities

    Science.gov (United States)

    2016-03-15

    Prediction of Aristolochic Acid–Induced Renal Injury in Male Rats. Veterinary Pathology Online, 51(3), 680–694. http://doi.org/10.1177/0300985813498779... Microbiology , 52(6), 2039–2045. http://doi.org/10.1128/JCM.00467-14 24. Hoffmann, D., Adler, M., Vaidya, V., Rached, E., Mulrane, L., Gallagher, W. M

  18. Neue Lautzeichen im Advanced Learners Dictionary (ALD). Stellungnahmen zum Pro und Kontra (New Sound Symbols in the Advanced Learners Dictionary [ALD]. Considerations Pro and Con)

    Science.gov (United States)

    Zielsprache Englisch, 1976

    1976-01-01

    The phonetic symbols in the "Advanced Learners Dictionary" (Oxford University Press, London) are discussed critically in articles by L. Alfes, H. Arndt, E. Bauch, G. Dahlmann-Resing, W. Friedrich, E. Germer, B. Haycraft, H. P. Kelz. Reference is made to an earlier article "Neue Zeichen", by H. G. Hoffmann. (Text is in German.)…

  19. International Conference on Numerical Grid Generation in Computational Fluid Dynamics

    Science.gov (United States)

    1989-04-30

    Joseph M. Juarez DFVLR SM -TS The Aerospace Corp. Bunsenstr-10 PO Box 92957 M5/559 D-3406 Gottingen Los Angeles CA 90009 F R Germany Klaus A. Hoffmann...Washington, D.C. 20332 Troy, NY 12180 Per Nielsen R. Raghunath Graduate Student Research Fellow Laboratory for Applied Math. Physic NOAA / AOML

  20. Bomen hebben wortels, mensen hebben benen, ideeën hebben vleugels: een introductie

    NARCIS (Netherlands)

    Leerssen, J.

    2008-01-01

    Trees have roots, people have legs, ideas have wings: an introduction Taking a philological field trip in 1837 by A.H. Hoffmann von Fallersleben as an example, this essay demonstrates how the rise of medievalism and national philology in the Netherlands was not a homegrown development, but a result

  1. Sélection d'un champignon filamenteux pour l'épuration des eaux ...

    African Journals Online (AJOL)

    Sci-Nat

    A quantum mechanical/ molecular mechanical study of the hydroxylation of phenol and halogenated derivatives by phenol hydroxylase. J. Am. Chem. Soc. 122, 8728-8738. Vankova S., Reznickova I., & Hoffmann J., 2000. Respirometric observation of inhibitory effects of xenobiotics on aerobic respiration of activated sludge ...

  2. Kas "Medium is the message?" / Riin Kübarsepp

    Index Scriptorium Estoniae

    Kübarsepp, Riin, 1978-

    2005-01-01

    Eesti Päevalehe 100. sünnipäevale pühendatud rändnäitusest "Ajaleht kunstis" Rakvere Linnagaleriis. Eksponeeritakse Oskar Hoffmann, Jaan Elkeni, Raul Rajangu, Agur Kruusingu, Endel Kõksi, Valeri Vinogradovi, Jüri Ojaveri jt töid

  3. Show and Tell

    DEFF Research Database (Denmark)

    2013-01-01

    /DK), Pernille With Madsen, Emil Alenius, Andrés Galeano (E/DE), Kasper Vang & Mads Forsby, Nanna Lysholt Hansen og Molly & Me (Molly Haslund & Catherine Hoffmann (UK)) Kurateret af Judith Schwarzbart og Sanne Krogh Groth Produceret af studerende ved Performance-design Programmet var støttet af Statens Kunstråd...

  4. Simunas pühitseti uus vitraažaken / Eva Klaas

    Index Scriptorium Estoniae

    Klaas, Eva, 1977-

    2009-01-01

    Simunas tähistati 31. oktoobril Simuna kiriku ja kogu kihelkonna nimepäeva, pühitseti ka äsjavalminud vitraažaken, mille autor on Dolores Hoffmann, kelle kujundatud on ka sarja "Maailma loomine" kuuluvad teised vitraažid

  5. "Uus tants 9" - kirju ja elujõuline / Evelin Lagle, Leenu Nigu

    Index Scriptorium Estoniae

    Lagle, Evelin

    2009-01-01

    19.-21. märtsini Tallinna teatrites ja saalides toimunud üheksandast Eesti uue tantsu ülevaatefestivalist "Uus Tants 9". Tantsulavastustest "Sula jagu", "Kahe korruse rahvas", "Can't Get No / Satisfaction", "Lokaalis täna: Kann/Valkeapää", "Kass ennustab tulevikku inimesest paremini", "Hoffmann-Promenade"

  6. Svetonosnoje iskusstvo / Lev Livshits

    Index Scriptorium Estoniae

    Лившиц, Лев, 1924-2013

    2003-01-01

    Katariina käigust Tallinnas. vitraažitöökojast-galeriist Domini Canes, seal töötavatest vitraažikunstnikest Dolores Hoffmannist ja Andrei Lobanovist, nende töödest nii Eestis kui ka välismaal. Dolores Hoffmann räägib vitraažist

  7. Nazad v budushtsheje / Jaroslava Tshudnovskaja

    Index Scriptorium Estoniae

    Tšudnovskaja, Jaroslava

    2004-01-01

    Dolores Hoffmann vitraažikunsti ajaloost, vitraažikoja asutamisest ja tegevusest Katariina käigus Tallinnas, vitraažimeistrite Boris Morejevi ja Aleksei tööst. vitraažikunstnik Dolores Hoffmanni lühibiograafia, tema tööd

  8. Evangelskije sjuzhetõ ljuterianskogo sobora / Jevgeni Ashihmin

    Index Scriptorium Estoniae

    Ashihmin, Jevgeni

    2004-01-01

    Narva Aleksandri Suurkirik saab 120. aastapäevaks värvilised vitraažid. Esimese vitraaži "Neitsi Maria" taastas Dolores Hoffmann, pärnapuust raam tehti mööblivabrikus Narova. Dolores Hoffmannil valmivad kiriku jaoks veel seitse vitraaži

  9. Organic Molecules and Water in the Inner Disks of T Tauri Stars

    Science.gov (United States)

    2011-05-11

    603 Knez, C., et al. 2007, BAAS , 211, 5005 Kruger, A. J., Richter, M. J., Carr, J. S., Najita, J. R., Doppmann, G. W., & Seifahrt, A. 2011, ApJ, 729...Close, L. M., Hinz, P. M., Hoffmann, W. F., Greene, T. P., Males, J. R., & Beck , T. L. 2010, ApJ, 711, 1280 Tappe, A., Lada, C. J., Black, J. H

  10. Distinguishing Plasmodium falciparum treatment failures from re-infections by using polymerase chain reaction genotyping in a holoendemic area in northeastern Tanzania

    DEFF Research Database (Denmark)

    Magesa, S M; Mdira, K Y; Farnert, A

    2001-01-01

    susceptibility to a combination of sulfadoxine/pyrimethamine (Fansidar; F. Hoffmann La Roche, Basel, Switzerland). Blood samples were collected before treatment and on days 7, 14, or 28 post-treatment in 51 asymptomatic children, of which 26 could not clear parasitemia within seven days post-treatment. Among...

  11. Mr Nissim Dahan, MK, Minister of Health, Israel, at the ATLAS exhibition

    CERN Multimedia

    Laurent Guiraud

    2001-01-01

    Photo 01: L. to r.:Dr Jim Allaby, Dr Peter Jenni, Prof. Bracha Regev, Chief Scientist, Ministry of Health, Mr Nissim Dahan, MK, Minister of Health, Dr Boaz Lev, Director General, Ministry of Health, Dr Hans F. Hoffmann and Dr Georges Mikenberg. Photo 02: Mr Nissim Dahan, MK, Minister of Health, Israel, signing the Guest Book.

  12. Resonance – Journal of Science Education | Indian Academy of ...

    Indian Academy of Sciences (India)

    Home; Journals; Resonance – Journal of Science Education; Volume 16; Issue 12. A Tale of Two Topologies: Woodward-Hoffmann Rules At Your Fingertips! Subramania Ranganathan. Volume 16 Issue 12 December 2011 pp 1211-1222. Fulltext. Click here to view fulltext PDF. Permanent link:

  13. East African Medical Journal - Vol 87, No 8 (2010)

    African Journals Online (AJOL)

    Association of the ENPP1 rs997509 polymorphism with obesity in South African mixed ancestry learners · EMAIL FREE FULL TEXT EMAIL FREE FULL TEXT · DOWNLOAD FULL TEXT DOWNLOAD FULL TEXT. T Matsha, B Fanampe, Y Yako, S Hassan, M Hoffmann, L Van der Merwe, RT Erasmus ...

  14. Disease: H00129 [KEGG MEDICUS

    Lifescience Database Archive (English)

    Full Text Available ings in Hunter disease: pathology and possible therapeutic effects reviewed. ... JOURNAL ... J Inherit Metab Dis 31:473-80 (2008) DOI:10.1007/s10545-008-0878-x ... ...532 OMIM: 309900 PMID:18618289 ... AUTHORS ... Al Sawaf S, Mayatepek E, Hoffmann B ... TITLE ... Neurological find

  15. Especie nueva de alacrán del género Centruroides (Scorpiones: Buthidae de la costa del estado de Jalisco, México A new scorpion species of the genus Centruroides (Scorpiones: Buthidae from the coast of the state of Jalisco, Mexico

    Directory of Open Access Journals (Sweden)

    Javier Ponce-Saavedra

    2011-12-01

    Full Text Available Se describe Centruroides chamela sp. nov. de Chamela en el estado de Jalisco, México. Se compara con C. elegans (Thorell, especie con la que es simpátrida. También se compara con las especies morfológica y geográficamente más cercanas: C. mascota Ponce-Saavedra y Francke, C. hirsutipalpus Ponce-Saavedra y Francke y C. tecomanus Hoffmann. Además, con C. meisei Hoffmann, que habita en las costas de Guerrero, porque este taxón se había considerado como subespecie de C. elegans. En la comparación se incluyen C. infamatus (C.L. Koch y C. ornatus (Pocock, por ser especies "rayadas" registradas para el estado de Jalisco.Centruroides chamela sp. nov. from Chamela, Jalisco, Mexico is described. The new species is compared primarily with C. elegans Thorell, because both species are sympatric. It is also compared with C. mascota Ponce-Saavedra et Francke, C. hirsutipalpus Ponce-Saavedra et Francke and C. tecomanus Hoffmann which are morphologically and geographically nearest to the new species. Centruroides meisei Hoffmann, which inhabits the coast of Guerrero is compared because this species was previously classified as a subspecies of C. elegans. Finally, C. infamatus (C.L. Koch and C. ornatus (Pocock are included in the comparisons because they are also present in the state of Jalisco, and belong to the "striped" section of the genus.

  16. ["Kuhu me siis läheme? - Eks ikka koju."] / M. J.

    Index Scriptorium Estoniae

    Jõgi, Mall, 1947-

    2016-01-01

    Tutvustus: „Kuhu me siis läheme? - Eks ikka koju.“ : sajandivahetus saksa kirjanduses 200 aastat tagasi : Goethe, Schiller, Tieck, Kleist, Hoffmann, Eichendorff, Büchner, Novalis, Hegel (Schelling? Hölderlin?), Schlegel / saksa keelest valinud ja tõlkinud Mati Sirkel. Tallinn : Eesti Keele Sihtasutus, 2015

  17. At the Very Root of the Development of Interest: Using Human Body Contexts to Improve Women's Emotional Engagement in Introductory Physics

    Science.gov (United States)

    Allaire-Duquette, Geneviève; Charland, Patrick; Riopel, Martin

    2014-01-01

    In physics, women find contexts concerning human biology, medical applications, or natural phenomena highly relevant (Hoffmann, 2002), and the rareness or absence of these in physics curricula may make it more difficult for women to develop and maintain their interest in physics. To date, research in physics education addressing student's…

  18. A Uniform Approach to Type Theory

    Science.gov (United States)

    1989-01-01

    logical and statistical techniques. There is no comprehensive survey on implementation issues. Some partial aspects are described in...U. de Paris (1930). In: Ecrits logiques de Jacques Herbrand, PUF Paris (1968). [71] C. M. Hoffmann, M. J. O’Donnell. "Programming with Equations

  19. Intergovernmentalisms: Gendering the Dinosaur?

    NARCIS (Netherlands)

    Vleuten, J.M. van der; Abels, G.; MacRae, H.

    2016-01-01

    Intergovernmentalism, whether in its original version (Hoffmann) or the liberal (Moravcsik) one, is usually portrayed as one of two classic, competing integration theories (the other one being neofunctionalism). It is also considered to be hopelessly limited as regards its explanatory power, due to

  20. A revision of the Paronychiinae

    NARCIS (Netherlands)

    Chaudhri, Mohammad Nazeer

    1968-01-01

    This study was undertaken, in April 1964, at the suggestion of Prof. Dr. J. Lanjouw. The need for such a revision, was, however, stressed by the authors of the subtribe, viz. PAX et K. HOFFMANN, who, while delimiting these genera, remarked that the Systematics of both the (main) genera of this

  1. Did goethe describe attention deficit hyperactivity disorder?

    Science.gov (United States)

    Bonazza, Sara; Scaglione, Cesa; Poppi, Massimo; Rizzo, Giovanni

    2011-01-01

    As early as 1846, the typical symptoms of attention deficit hyperactivity disorder (ADHD) were described by Heinrich Hoffmann (1809-1894). However, in Goethe's masterpiece Faust (1832), the character of Euphorion strongly suggests ADHD diagnosis. Copyright © 2011 S. Karger AG, Basel.

  2. Quantum variational calculus

    CERN Document Server

    Malinowska, Agnieszka B

    2014-01-01

    This Brief puts together two subjects, quantum and variational calculi by considering variational problems involving Hahn quantum operators. The main advantage of its results is that they are able to deal with nondifferentiable (even discontinuous) functions, which are important in applications. Possible applications in economics are discussed. Economists model time as continuous or discrete. Although individual economic decisions are generally made at discrete time intervals, they may well be less than perfectly synchronized in ways discrete models postulate. On the other hand, the usual assumption that economic activity takes place continuously, is nothing else than a convenient abstraction that in many applications is far from reality. The Hahn quantum calculus helps to bridge the gap between the two families of models: continuous and discrete. Quantum Variational Calculus is self-contained and unified in presentation. It provides an opportunity for an introduction to the quantum calculus of variations fo...

  3. Award for Lise Meitner

    International Nuclear Information System (INIS)

    1967-01-01

    It is a matter of history that the work in the 1930's of Lise Meitner, Otto Hahn and Fritz Strassmann played a great part in pointing the way to exploiting the possibilities of fission. One of the most interesting occasions the Agency has known came in 1963 when Lise Meitner paid a visit to talk about her life as a scientist, thus returning to the city where she had started her university career in 1901. Her account of a career which had brought her into contact with scientists such as Einstein, Planck, Rutherford, Bohr and many others took her listeners back to the birth of the atomic age. A photograph is shown taken at Dr. Meitner's home in Cambridge, UK, when she received the Enrico Fermi award for 1966, shared with Hahn and Strassmann

  4. Pioneers of the Nuclear Sciences

    International Nuclear Information System (INIS)

    Bosch, P.; Bulbulian, S.; Fernandez, M.; Jimenez, M.; Segovia, N.; Solache, M.; Tejera, A.

    1994-01-01

    From 1896, date in which radioactivity is discovered, to 1942, when Fermi installed the first atomic pile, a small group of researchers got to the bottom of the atom, and proposed an appropriate structure to define it and to create a technology derived from their findings. There were four schools the protagonists of such studies: a French group (Becquerel, Curie and Joliet Curie), an anglo-saxon group (Chadwick, Rutherford and Thomson), an Italian group (Fermi) and finally, an Australian-German group (Frisch, Hahn, Meitner and Strassmann). The progress of the knowledge was very fast because the results were exchanged and discussed in congresses in a totally cosmopolitan ambient, with the knowledge as the only objective. The book is arranged in sections as follows: I. The discovery of natural radioactivity. II. Atomic structure. III. Artificial radioactivity. IV. Properties of thermal neutrons. V. Nuclear fission: Otto Hahn and the german school. VI. Conclusions and two appendixes. (Author)

  5. The discovery of nuclear fission and the responsibility of the scientist

    International Nuclear Information System (INIS)

    Staab, H.A.

    1989-01-01

    The history of the discovery of nuclear fission is placed in historical context and the responsibility of the scientists involved for the subsequent military uses is discussed. It is explained that the deep things in science are not found because they are useful; they are found because it is possible to find them. If Otto Hahn and his co-workers had not discovered nuclear fission someone else in the late 1930s or early 1940s would have done so. It was decisions outside science which set the course for the nuclear fission research once the basic principle had been understood. The question how far does the scientists responsibility extend for unknown and unintended consequences of research and for misuses of his findings by others is discussed. Scientists have a duty to understand the applications of their work and to warn of misuse or hazards, as did Otto Hahn. (UK)

  6. Status report 1993-1997 on solar energy research; Statusbericht 1993-1997 Schwerpunkt `Solarenergieforschung`

    Energy Technology Data Exchange (ETDEWEB)

    Fuhs, W; Lux-Steiner, M; Tributsch, H; Willig, F

    1998-09-01

    Solar energy research at the Berlin Hahn-Meitner-Institut (HMI) comprises the following subjects: (a) Silicon thin film solar cells; (b) High-absorption intermediate semiconductors; (c) Photoelectrochemistry and photocatalysis; (d) Injection-type solar cells; (e) Interdisciplinary projects, accompanying materials research and basic research. The 1993 - 1997 status report presents a detailed outline of the projects. [Deutsch] Im Zentrum der Solarenergieforschung des Hahn-Meitner-Instituts (HMI) stehen die folgenden Vorhaben: (a) Duennschichtsolarzellen aus Silizium; (b) Hochabsorbierende Verbindungsleiter; (c) Photoelectrochemie und Photokatalyse; (d) Injektionssolarzellen; (e) Querschnittsaufgaben, begleitende Material- und Grundlagenforschung. Diese Vorhaben werden von Projekten verschiedener Abteilungen getragen. Der vorliegende Statusbericht 1993-1997 gibt eine detaillierte Uebersicht ueber die oben genannten Projekte. (AKF)

  7. 50 years with nuclear fission, April 25-28, 1989. A prelude to fission: France

    International Nuclear Information System (INIS)

    Savic, P.

    1989-01-01

    A personal account of the events leading to the 1938 discovery, by Irene Joliot-Curie and the author, of the unidentified element R 3.5h will be presented, as well as the experimental methods proving the R 3.5h had chemical properties similar to lanthanum which in turn led Hahn and Strassmann to the discovery of fission in 1939. The author points out that Irene Curie's intuition indicated the path towards the solution of the problem of uranium irradiated by neutrons, which made possible the discovery of fission by Hahn and Strassmann. Further applications of fission became possible by tremendous efforts and excellent contributions of scientists in the USA

  8. An Inconvenient History: the Nuclear-Fission Display in the Deutsches Museum

    Science.gov (United States)

    Sime, Ruth Lewin

    2010-06-01

    One of the longstanding attractions of the Deutsches Museum in Munich, Germany, has been its display of the apparatus associated with the discovery of nuclear fission. Although the discovery involved three scientists, Otto Hahn, Lise Meitner, and Fritz Strassmann, the fission display was designated for over 30 years as the Arbeitstisch von Otto Hahn (Otto Hahn’s Worktable), with Strassmann mentioned peripherally and Meitner not at all, and it was not until the early 1990s that the display was revised to include all three codiscoverers more equitably. I examine the creation of the fission display in the context of the postwar German culture of silencing the National Socialist past, and trace the eventual transformation of the display into a contemporary exhibit that more accurately represents the scientific history of the fission discovery.

  9. List of HMI reports

    International Nuclear Information System (INIS)

    1987-01-01

    The Hahn-Meitner-Institute Berlin publishes a series of reports with the results of R+D work of the institute. This list of publications contains also an author index in alphabetical order which points to annual reports of the institute as well as to the reports of the sections of nuclear and radiation physics, nuclear chemistry and reactor, and the section data processing and electronics. With 440 refs [de

  10. Constrained multi-degree reduction with respect to Jacobi norms

    KAUST Repository

    Ait-Haddou, Rachid; Barton, Michael

    2015-01-01

    We show that a weighted least squares approximation of Bézier coefficients with factored Hahn weights provides the best constrained polynomial degree reduction with respect to the Jacobi L2L2-norm. This result affords generalizations to many previous findings in the field of polynomial degree reduction. A solution method to the constrained multi-degree reduction with respect to the Jacobi L2L2-norm is presented.

  11. Plaadid / Villu Päärt

    Index Scriptorium Estoniae

    Päärt, Villu, 1972-

    2003-01-01

    Uutest plaatidest Sarah Connor "Unbelievable", Robbie Williams "Escapology", Stan Getz "The Definitive Stan Getz", Santana "Sunrise", Wallflowers "Red Letter Days", Robert Palmer "At His Very Best", INXS "Definitive", Hilary Hahn "Mendelssohn/Shostakovich", System Of A Down "Steal This Album!", Disturbed "Believe", "Divas Las Vegas", Yann Tiersen " C'Etait Ici", We Will Rock You " Original London Cast Recording", Busta Rhymes " It Ain't Safe No More", David Bowie "Best Of", Terence Trent D'Arby "Greatest Hits"

  12. ON THE FOUNDATIONS OF MATHEMATICAL ECONOMICS

    OpenAIRE

    J. BARKLEY ROSSER

    2012-01-01

    Kumaraswamy Vela Velupillai74 presents a constructivist perspective on the foundations of mathematical economics, praising the views of Feynman in developing path integrals and Dirac in developing the delta function. He sees their approach as consistent with the Bishop constructive mathematics and considers its view on the Bolzano-Weierstrass, Hahn-Banach, and intermediate value theorems, and then the implications of these arguments for such "crown jewels" of mathematical economics as the exi...

  13. La energía atómica hoy: un acuciante dilema

    OpenAIRE

    Coronado, Guillermo

    2016-01-01

    Para iniciar la consideración del tema, se discutirá un interesante caso de predicción exitosa. En efecto, el físico francés Mauricio de Broglie, en su texto divulgativo de 1939, Átomos, radioactividad, transmutaciones, hace referencia a los acontecimientos científicos divulgados a principios de ese año y a los aportes de Hahn, Meitner, Joliot-Curie, etc.

  14. A Workshop on Environmental Technology Assessment Held at the University of Cambridge, England Held on 24-26 April, 1985,

    Science.gov (United States)

    1985-01-01

    for Air Pollutants J J Stukel Economic Issues in the Control of Air Pollution I M Torrens Theme 2 Water Treatment Megatrends in Water Treatment...Hahn Waste Water Treatment by Fixed Films in Biological Aerated Filters J Sibony Theme 4 Hazardous and Toxic Waste Management Technologies for...TECHNOLOGY ASSESSMENTS -c -e ne>±- a- University of Cambridge, England April 24-26, 1985 MEGATRENDS IN NATER TREATMENT TECHNOLOGIES F’. Fiessinaer, J

  15. Development and testing of control rod drives for ship reactors

    International Nuclear Information System (INIS)

    Bruelheide, K.; Mundt, D.; Peters, C.-H.; Manthey, H.-J.

    1978-01-01

    The following paper deals with the development and testings of a new control rod drive design for marine reactors. Starting from the good operating experience with the advanced pressurized water reactor (FDR) of the NS OTTO HAHN a control rod drive system with an hermetically sealed drive principle was developed. A prototype control rod drive system was put through extensive tests and developed ready for standard production at the 'Gesellschaft fuer Kernenergieverwertung in Schiffbau und Schiffahrt'

  16. The Bern Infinitesimal Bubble Chamber (BIBC)

    CERN Multimedia

    CERN PhotoLab

    1977-01-01

    The chamber body was machined from a block of aluminium. The visible volume was cylindrical with 65 mm diameter and 35 mm depth. It was filled with propane or freon. It was meant as vertex detector in the search of short-lived particles. It was also used with in-line holography resulting in 8 µm bubble size and 9 cm depth of the field. See E. Ramseyer, B. Hahn and E. Hugentobler, Nucl. Instrum. Methods 201 (1982) 335.

  17. From nuclear fission to nuclear energy

    International Nuclear Information System (INIS)

    Pocock, R.F.

    1988-01-01

    Otto Hahn, a German chemist, demonstrated the fission of the uranium nucleus in December 1938. Ten months later, basic physical theory had been modified to account for this phenomenon. It is suggested here that this great advance in radio-chemistry and physics was influenced considerably by political considerations. By the outbreak of the European War in September 1939, all the major scientific principles involved in the production of atomic weapons were well-known and were available in all industrial countries. (author)

  18. General quantum variational calculus

    Directory of Open Access Journals (Sweden)

    Artur M. C. Brito da Cruz

    2018-02-01

    Full Text Available We develop a new variational calculus based in the general quantum difference operator recently introduced by Hamza et al. In particular, we obtain optimality conditions for generalized variational problems where the Lagrangian may depend on the endpoints conditions and a real parameter, for the basic and isoperimetric problems, with and without fixed boundary conditions. Our results provide a generalization to previous results obtained for the $q$- and Hahn-calculus.

  19. Contributions to radiochemical and nuclear materials research

    International Nuclear Information System (INIS)

    Matzke, H.

    1982-01-01

    Series of talks given during a seminar of the European Institute for Transuranium Elements in april 1981 in honor of R. LINDNER on the occasion of his 60th birth day. The topics include general aspects of research practice and science prognosis, retrospective essays about the discovery of nuclear fission by O. HAHN as well as surveys of actual research activities concerning a radiochemistry and the use of radioactivity in material science

  20. Abstracts of Manuscripts Submitted in 1991 for Publication

    Science.gov (United States)

    1992-05-01

    Tributlytin ( TBT ) has been shown to be Gonadally mature flounder (Pseudopleuronectes highly toxic to a number of aquatic species, but americanus) were...and biodegraded fuel oil, aromatic hydrocarbons and cycloalkanes at The interaction of tributyltin chloride ( TBT ) 5-10 cm with lesser concentrations...in Non-Mammalian Species: Implications for Dioxin Toxicity and Ah Receptor Evolution Mark E. Hahn and John J. Stegeman

  1. The best 100 free apps for libraries

    CERN Document Server

    Hahn, Jim

    2013-01-01

    Librarian Jim Hahn has carefully culled the over 500,000 available apps down to the 100 that are the absolute best for day-in, day-out library services. The guide covers apps from both Apple and Android devices, including tablets. This guide is intended as an introduction for those with little or no app experience and for those wanting to know more about app uses for information access.

  2. Dynamical suppression of nuclear-spin decoherence time in Si and GaAs using inversion pulses

    International Nuclear Information System (INIS)

    Watanabe, S.; Harada, J.; Sasaki, S.; Hirayama, Y.

    2007-01-01

    We found that nuclear-spin decoherence is suppressed by applying inversion pulses such as alternating phase Carr-Purcell (APCP) and Carr-Purcell-Meiboom-Gill (CPMG) sequences in silicon and GaAs. The decoherence time reaches ∼1.3s by applying inversion pulses, which is ∼200 times as long as the characteristic decay time obtained from the Hahn echo sequence (∼6ms) in silicon

  3. 75 years of the discovery of nuclear fission. A timeline; 75 Jahre Entdeckung der Kernspaltung. Eine Zeitlinie

    Energy Technology Data Exchange (ETDEWEB)

    Reinartz, Jerome [atw-Redaktion, Hattingen (Germany)

    2013-12-15

    The discovery of nuclear fission and the possibility of a self- sustaining chain reaction begins with modern atomic and nuclear physics at the end of the 19{sup th} century. Further key discoveries resulted as of 1900 with the fundamentals on the structure of matter. In 1938 Otto Hahn, Fritz Strassmann and Lise Meitner came to realise that neutrons were able to split uranium nuclei. Important milestones until 1938 and beyond are summarized. (orig.)

  4. Corrosion-induced changes in pore-size distributions of fuel-matrix material

    International Nuclear Information System (INIS)

    Krautwasser, P.; Eatherly, W.P.

    1981-01-01

    In order to understand the mechanism of metallic fission-product adsorption and desorption as well as diffusion in graphitic materials, a detailed knowledge of the material microstructure is essential. Different types of grahitic matrix material used or to be used in fuel elements of the German HTR Program were measured at ORNL in cooperation with the Hahn-Meitner-Institut Berlin. Actual measurements of fission product diffusion and adsorption/desorption were performed at HMI Berlin

  5. CONFERENCE: Computers and accelerators

    Energy Technology Data Exchange (ETDEWEB)

    Anon.

    1984-01-15

    In September of last year a Conference on 'Computers in Accelerator Design and Operation' was held in West Berlin attracting some 160 specialists including many from outside Europe. It was a Europhysics Conference, organized by the Hahn-Meitner Institute with Roman Zelazny as Conference Chairman, postponed from an earlier intended venue in Warsaw. The aim was to bring together specialists in the fields of accelerator design, computer control and accelerator operation.

  6. VatuximabTM: Optimizing Therapeutic Strategies for Prostate Cancer Based on Dynamic MR Tumor Oximetry

    Science.gov (United States)

    2007-12-01

    Ca2+ and pH in shaping myocardial contractile response to acute respiratory alkalosis , Am. J. Physiol. 265 (1993) H1696–1703. [313] H.L. Kirschenlohr...respect to growth and respiratory challenge. Int. J. Radiat. Oncol. Biol. Phys., 53: 744-756, 2002. 9. Zhao, D., Ran, S., Constantinescu, A., Hahn... respiratory challenge monitored with three oxygen-sensitive parameters. Applied Optics, 42, 2960-2967 (2003) 28. Brurberg, K. G., H. K. Skogmo, B. A. Graff

  7. Search for superdeformation in {sup 144,145}Gd

    Energy Technology Data Exchange (ETDEWEB)

    Rzaca-Urban, T [Warsaw Univ. (Poland); Lieder, R M; Strahle, K; Utzelmann, S; Gast, W; Kutchin, D; Schnare, H [Forschungszentrum Juelich GmbH (Germany). Inst. fuer Kernphysik; Georgiev, A [Sofia Univ. (Bulgaria); Marti, G [Comision Nacional de Energia Atomica, Buenos Aires (Argentina). Dept. de Fisica; Spohr, K [Forschungszentrum Juelich GmbH (Germany). Inst. fuer Kernphysik; [Hahn-Meitner-Institut Berlin GmbH (Germany); Brentano, P; Eberth, J; Eschenauer, M; Freund, S; Ott, E; Theuerkauf, J; Wolters, H; Zell, K O [Koeln Univ. (Germany). Inst. fuer Kernphysik; Maier, K H; Grave, H; Bach, C; Heese, J; Kluge, H; Schramm, M; Schubarth, R [Hahn-Meitner-Institut Berlin GmbH (Germany)

    1992-08-01

    Two experiments were performed and analyzed to search for superdeformation band in {sup 144,145}Gd by bombarding {sup 108,110}Pd targets with {sup 40A}r ions with energies of 182 and 189 MeV respectively, at the VICKSI accelerator of the Hahn-Meitner Institut, Berlin. The gamma radiation was measured with the OSIRIS spectrometer. An extended level system was proposed. 8 refs., 2 figs.

  8. Thermally-activated deformation in dispersion-hardened polycrystalline iron at room temperature

    DEFF Research Database (Denmark)

    Singh, Bachu Narain; Cotteril, P.

    1970-01-01

    The activation volume and dislocation velocity exponent have been obtained for polycrystalline iron in the extruded, extruded and annealed, and cold-rolled and annealed condition containing various amounts of alumina or zirconia particles, using the strain rate-change technique. It is found that ...... to the thermally activated flow stress contribution at room temperature. The dislocation velocity exponent also explains the yield-drop and Lüder's strain and is in a good agreement with Hahn's model....

  9. Constrained multi-degree reduction with respect to Jacobi norms

    KAUST Repository

    Ait-Haddou, Rachid

    2015-12-31

    We show that a weighted least squares approximation of Bézier coefficients with factored Hahn weights provides the best constrained polynomial degree reduction with respect to the Jacobi L2L2-norm. This result affords generalizations to many previous findings in the field of polynomial degree reduction. A solution method to the constrained multi-degree reduction with respect to the Jacobi L2L2-norm is presented.

  10. Quantum state transfer in spin chains with q-deformed interaction terms

    International Nuclear Information System (INIS)

    Jafarov, E I; Van der Jeugt, J

    2010-01-01

    We study the time evolution of a single spin excitation state in certain linear spin chains, as a model for quantum communication. Some years ago it was discovered that when the spin chain data (the nearest-neighbour interaction strengths and the magnetic field strengths) are related to the Jacobi matrix entries of Krawtchouk polynomials or dual Hahn polynomials the so-called perfect state transfer takes place. The extension of these ideas to other types of discrete orthogonal polynomials did not lead to new models with perfect state transfer, but did allow more insight in the general computation of the correlation function. In this paper, we extend the study to discrete orthogonal polynomials of q-hypergeometric type. A remarkable result is a new analytic model where perfect state transfer is achieved: this is when the spin chain data are related to the Jacobi matrix of q-Krawtchouk polynomials. The other cases studied here (affine q-Krawtchouk polynomials, quantum q-Krawtchouk polynomials, dual q-Krawtchouk polynomials, q-Hahn polynomials, dual q-Hahn polynomials and q-Racah polynomials) do not give rise to models with perfect state transfer. However, the computation of the correlation function itself is quite interesting, leading to advanced q-series manipulations.

  11. Dynamical nuclear polarization using multi-colour control of color centers in diamond

    Energy Technology Data Exchange (ETDEWEB)

    Yang, Pengcheng [Huazhong University of Science and Technology, School of Physics, Wuhan (China); Huazhong University of Science and Technology, Center for Quantum Optical Science, Wuhan (China); Plenio, Martin B. [Universitaet Ulm, Institut fuer Theoretische Physik, Ulm (Germany); Universitaet Ulm, Center for Integrated Quantum Science and Technology, Ulm (Germany); Cai, Jianming [Huazhong University of Science and Technology, School of Physics, Wuhan (China); Huazhong University of Science and Technology, Center for Quantum Optical Science, Wuhan (China); Universitaet Ulm, Institut fuer Theoretische Physik, Ulm (Germany); Universitaet Ulm, Center for Integrated Quantum Science and Technology, Ulm (Germany)

    2016-12-15

    Dynamical nuclear polarization (DNP) transfers the polarization of electron spins at cryogenic temperatures to achieve strong nuclear polarization for applications in nuclear magnetic resonance. Recently introduced approaches employ optical pumping of nitrogen-vacancy (NV) centers in diamond to achieve DNP even at ambient temperatures. In such schemes microwave radiation is used to establish a Hartmann-Hahn condition between the NV electron spin and proximal nuclear spins to facilitate polarization transfer. For a single monochromatic microwave driving field, the Hartmann-Hahn condition cannot be satisfied for an ensemble of NV centers due to inhomogeneous broadening and reduces significantly the overall efficiency of dynamical nuclear polarization using an ensemble of NV centers. Here, we adopt generalized Hartmann-Hahn type dynamical nuclear polarization schemes by applying microwave driving fields with (multiple) time-modulated frequencies. We show that it is possible to enhance the effective coupling between an ensemble of NV center spins with inhomogeneous broadening and nuclear spins, thereby improving significantly the overall efficiency of dynamical nuclear polarization. This approach can also be used to achieve dynamical nuclear polarization of an ensemble of nuclei with a distribution of Larmor frequencies, which would be helpful in magnetic resonance spectroscopy using a single NV spin sensor. (orig.)

  12. Descripción de una especie nueva de alacrán con importancia médica del género Centruroides (Scorpiones: Buthidae del estado de Colima, México Description of a new species of scorpion of medical importance of the genus Centruroides (Scorpiones: Buthidae from the state of Colima, Mexico

    Directory of Open Access Journals (Sweden)

    Javier Ponce-Saavedra

    2009-12-01

    Full Text Available Se describe Centruroides hirsutipalpus sp. nov. de la región de Minatitlán, Colima. Se compara con las especies morfológica y geográficamente más cercanas, C. elegans Thorell y C. tecomanus Hoffmann y con otras especies "rayadas" de Centruroides del centro-occidente de México. Es ésta una especie con importancia médica que no se había recolectado previamente.Centruroides hirsutipalpus sp. nov. from the region of Minatitlán, Colima, Mexico is described. The new species is compared with C. elegans Thorell and C. tecomanus Hoffmann, which are morphologically and geographically closely related. Comparisons with other species of "striped" Centruroides from central and western Mexico are included. This medically important species had not been collected previously.

  13. Nueva especie de alacrán del género Centruroides (Scorpiones, Buthidae del estado de Jalisco, México A new scorpion species of the genus Centruroides (Scorpiones, Buthidae from the state of Jalisco, Mexico

    Directory of Open Access Journals (Sweden)

    Javier Ponce Saavedra

    2011-06-01

    Full Text Available Se describe Centruroides mascota sp. nov. de Mascota, Estado de Jalisco, México. Se hace una comparación con las especies morfológica y geográficamente más cercanas: C. elegans Thorell, C. hirsutipalpus Ponce y Francke, C. infamatus (Koch., C. ornatus Pocock y C. tecomanus Hoffmann. Es una especie de importancia médica que no se había recolectado o reconocido previamente.Centruroides mascota sp. nov. from Mascota, Jalisco, Mexico is described. The new species is compared with C. elegans Thorell, C. hirsutipalpus Ponce y Francke, C. infamatus (Koch., C. ornatus Pocock and C. tecomanus Hoffmann, which are morphologically and geographically nearest to it. This medically important species had not been collected or recognized previously

  14. Effect of joint mobilization on the H Reflex amplitude in people with spasticity

    OpenAIRE

    Pérez Parra, Julio Ernesto; Henao Lema, Claudia Patricia

    2011-01-01

    Objective: To determine the effect of ankle joint mobilization on the H reflex amplitude of thesoleus muscle in people with spasticity. Materials and methods: A quasi-experimental study withcrossover design and simple masking was conducted in 24 randomized subjects to initiate thecontrol or experimental group. Traction and rhythmic oscillation were applied for five minutesto the ankle joint. H wave amplitude changes of Hoffmann reflex (electrical equivalent of themonosynaptic spinal reflex) w...

  15. Influence of an aerobic sediment-water interface in relation to reduced risk of phosphorus leaching from re-established wetlands

    DEFF Research Database (Denmark)

    Forsmann, Ditte M.; Kjærgaard, Charlotte

    water interactions are of fundamental importance for the biogeochemical processes controlling phosphorus dynamics in wetlands, and different hydrological pathways such as groundwater discharge and surface water flooding are operating within wetlands (Hoffmann et al., 2009). During groundwater discharge...... depends both on the hydrological regimes and the processes taking place at the sediment-water interface. Re-oxidation of iron might allow a recapturing of phosphorus (Zak et al., 2004), and thereby impede P losses to the aquatic environment....

  16. Belize it or not:implied contract terms in Marks and Spencer v BNP Paribas

    OpenAIRE

    McCunn, Joanna

    2016-01-01

    In Marks and Spencer v BNP Paribas, the Supreme Court restated the law on the implication of terms in fact, rejecting the previously authoritative approach taken by Lord Hoffmann in Attorney General of Belize v Belize Telecom Ltd. This article examines two major departures from Belize in Lord Neuberger’s leading judgment: the treatment of implication as a process separate from interpretation, and a return to the ‘traditional tests’ for the implication of terms. It argues that these are retrog...

  17. CMS Interim Memorandum of Understanding The Costs and How They are Calculated

    CERN Document Server

    Willers, Ian Malcolm

    2001-01-01

    This document explains how we arrived at the costs that are to be used in the Interim Memorandum of Understanding, iMoU. It integrates information taken from the Hoffmann review, PASTA and Lucas Taylor. I would like to thank Petr Moissenz for proof reading which helped me to improve the accuracy of the information in a short period of time. Also Claude Charlot for his valuable comments.

  18. [Christian Andreas Cothenius (1708-1789). A pro-memoria on the occasion of the 200th anniversary of his death].

    Science.gov (United States)

    Völker, A

    1990-04-01

    The 200th anniversary of the death of Christian Andreas Cothenius gave occasion to appreciate life and work of this personage of a physician. Cothenius maintained manifold connections to Halle, of which the golden doctorate and the heritage of the pharmaceutic enterprises of his teacher Friedrich Hoffmann were treated in this place. The picture of the local relations was supplemented by the history of the Cothenius medal which is today awarded by the Leopoldina of Halle.

  19. Visit of the Austrian Minister of Health and Women's Issues

    CERN Multimedia

    Maximilien Brice

    2003-01-01

    Mrs Maria Rauch-Kallat, Minister of Health and Women's Issues, Austria, came to CERN on 19 May. The theme of her visit was technology transfer. Photo 01: Dr Hans F. Hoffmann, CERN Director for Technology Transfer and Scientific Computing with Mrs Maria Rauch-Kallat, Minister of Health and Women's Issues, Austria, signing the VIP visitors' book. Photo 02: Mrs Maria Rauch-Kallat, Minister of Health and Women's Issues, Austria, signing the VIP visitors' book.

  20. The IMPACT Common Module - A Low Cost, Reconfigurable Building Block for Next Generation Phased Arrays

    Science.gov (United States)

    2016-03-31

    Road NE Cedar Rapids, IA USA 52498 Ted.Hoffmann@corp.rockwellcollins.com Caleb Fulton, Mark Yeary, Austin Saunders, Dan Thompson University...thus providing increasing functionality and performance at reduced cost, size, and weight compared to their predecessors [ 4 -6]. This has been...Figure 4 ). The kickback would otherwise be very difficult to absorb by the ADC driver and would also cause ringing in the bond wire inductances

  1. African Journal of Science and Technology (AJST) EFFETS DE L ...

    African Journals Online (AJOL)

    opiyo

    glycosides et des chalcones (Hoffmann et Holzi, 1989), des terpènes et des huiles essentielles (Amvam Zollo et al.,1995), des composés acétyléniques et des flavonoïdes .... plants of tropical central Africa. XX : The occurrence of 1- phenyl-1,3,5- triyne in the essential oil of Bidens pilosa L. from Cameroun. Flavour and ...

  2. Untitled

    African Journals Online (AJOL)

    Elamin

    Krüger B, Fischereder M, Jauch KW, Graeb C,. Hoffmann U, Böger CA, Banas B, Obed A. Schlitt HJ,. Krämer BK. Five-year follow-up after late conversion from calcineurin inhibitors to sirolimus in patients with chronic renal allograff dysfunction. Transplant Proc. 2007 Mar,39(2):518-21. 54. Schena FP, Pascoe MD, Albertu J, ...

  3. Lumbar paravertebral blockade as intractable pain management method in palliative care

    OpenAIRE

    Zaporowska-Stachowiak I; Kotlinska-Lemieszek A; Kowalski G; Kosicka K; Hoffmann K; Główka F; Łuczak J

    2013-01-01

    Iwona Zaporowska-Stachowiak,1,2 Aleksandra Kotlinska-Lemieszek,3 Grzegorz Kowalski,3 Katarzyna Kosicka,4 Karolina Hoffmann,5 Franciszek Główka,4 Jacek Łuczak2 1Department of Pharmacology, 2Palliative Medicine In-patient Unit, University Hospital of Lord’s Transfiguration, 3Department of Palliative Care, 4Department of Physical Pharmacy and Pharmacokinetics, 5Department of Internal Medicine, Metabolic Disorders and Arterial Hypertension, Poznan University of Medical Scie...

  4. Physical and Neuropsychiatric Trauma-Wound Healing and Tissue Preservation

    Science.gov (United States)

    2008-10-01

    Neurosurg Spine 99:188-197. Hall A (1998) Rho GTPases and the actin cytoskeleton. Science 279:509-514. Holtje M, Hoffmann A, Hofmann F, Mucke C...cytokines and receptors. Annu. Rev. Immunol. 22, 929–979 (2004). 21. S. J. Rodda, A. P. McMahon, Distinct roles for Hedgehog and canonical Wnt signaling in...Swain, M. S. Razzaque, S. Mackem, B. Lanske, Indian Hedgehog produced by postnatal chondrocytes is essen- tial for maintaining a growth plate and

  5. Linnugripp tõi ravimifirmale Roche magusa kasumi / Erik Aru

    Index Scriptorium Estoniae

    Aru, Erik

    2005-01-01

    Šveitsi ravimitootja Roche'i viiruseravimi Tamiflu müük on kasvanud. Roche kavatseb järgmiseks suveks suurendada toodangut võrreldes 2004. aastaga kaheksa korda, kuid seda ei peeta piisavaks. ÜRO ja WHO nõuavad, et firma loobuks patentidest või annaks koopiaravimite valmistajatele tootmise litsentsi. Tabel: F. Hoffmann-La Roche. Lisa: Linnugripi vaktsiini võib loota kuue kuu pärast

  6. Kumb oli agressor Hitler või Stalin / Rudolf Augstein

    Index Scriptorium Estoniae

    Augstein, Rudolf

    1996-01-01

    Järg Apr/13.,15.16.,17.,18.,19,20.,22.,23.,24.,25.,26. lk. 35,23,23,23,23,23,33,23,23,23,23,23. Kolme raamatu põhjal tehtud ülevaade sõjast: Vladimir Rezun "M-päev", Joachim Hoffmann "Stalini hävitussõda 1941-1945", Walter Post ""Barbarossa" plaan". Saksa ja Nõukogude kallaetungikavad 1940/41

  7. Music

    OpenAIRE

    Deinert, Herbert

    2010-01-01

    The musical ending [of Goethe's Novelle] recalls the fascination with "music as metaphor", "the power of music", among recent and contemporary poets from Pope and Dryden and Collins to E.T.A. Hoffmann and Kleist and, of course to Goethe himself. Music saves Faust's life on Easter morning at the end of a dreadful night, and we'll encounter a similar role of music in his Trilogie der Leidenschaft which we'll read in this context.

  8. Verification of models for ballistic movement time and endpoint variability.

    Science.gov (United States)

    Lin, Ray F; Drury, Colin G

    2013-01-01

    A hand control movement is composed of several ballistic movements. The time required in performing a ballistic movement and its endpoint variability are two important properties in developing movement models. The purpose of this study was to test potential models for predicting these two properties. Twelve participants conducted ballistic movements of specific amplitudes using a drawing tablet. The measured data of movement time and endpoint variability were then used to verify the models. This study was successful with Hoffmann and Gan's movement time model (Hoffmann, 1981; Gan and Hoffmann 1988) predicting more than 90.7% data variance for 84 individual measurements. A new theoretically developed ballistic movement variability model, proved to be better than Howarth, Beggs, and Bowden's (1971) model, predicting on average 84.8% of stopping-variable error and 88.3% of aiming-variable errors. These two validated models will help build solid theoretical movement models and evaluate input devices. This article provides better models for predicting end accuracy and movement time of ballistic movements that are desirable in rapid aiming tasks, such as keying in numbers on a smart phone. The models allow better design of aiming tasks, for example button sizes on mobile phones for different user populations.

  9. Functional analysis

    CERN Document Server

    Bachman, George

    1998-01-01

    Excellent treatment of the subject geared toward students with background in linear algebra, advanced calculus, physics and engineering. Text covers introduction to inner-product spaces, normed and metric spaces, and topological spaces; complete orthonormal sets, the Hahn-Banach theorem and its consequences, spectral notions, square roots, a spectral decomposition theorem, and many other related subjects. Chapters conclude with exercises intended to test and reinforce reader's understanding of text material. A glossary of definitions, detailed proofs of theorems, bibliography, and index of sym

  10. Scientific results report 1980

    International Nuclear Information System (INIS)

    1981-01-01

    The report describes in concise form the research tasks and results of the work groups pulsed irradiation, reaction kinematics and insulators and plastics in the field of 'radiation chemistry' of the Hahn-Meitner Institute, Berlin. The main topic of investigation was the kinetics and dynamics of fast chemical processes, the setting-up of chemical reaction mechanisms and research of chemical physical properties of highly reactive species (radicals, ions, electrons). A list of publications and lectures as well as teaching contributions of the institute's scientists, diploma and doctor theses performed in the institute and guest lectures held there is also given. (RB) [de

  11. A coincidence method for the simultaneous measurement of the photoionization of several masses

    International Nuclear Information System (INIS)

    Broeker, G.

    1989-11-01

    This study was made in the working team Ding (Hahn-Meitner Institute Berlin) in the framework of photoionization experiments on Van-der-Waals clusters. The experiments were performed at the Berlin electron storage ring (BESSY). In a molecular-beam source clusters are produced and ionized by monochromatic light. The mass of the ions arising hereby is determined with a time-of-flight mass spectrometer. Within this thesis a method and an electronic device was developed, by which it is made possible to gather simultaneously the wave-length dependence of several masses. (orig.) With 27 refs [de

  12. HMI annual report 1990

    International Nuclear Information System (INIS)

    1991-01-01

    This report describes the activities of the Hahn-Meitner-Institut (HMI) on four special subjects: 1. Nuclear physics (nuclear reactions, nuclear structure, VICKSI accelerator development), 2. photochemical energy conversion (basic and material research, radiation chemistry), 3. structure research (theory of many-body systems, solid-state physics, neutron scattering, highly stressed metallic materials, trace nutrients in health and nutrition), and 4. information technics (software, real time systems, semiconductor subassembly). The following is presented for every special subject: a) the topics worked on in 1989, b) selected results and c) publications, lectures, theses submitted for diplomas and doctoral theses. (orig.) [de

  13. Overview of recent results from non-neutral plasmas in the CNT stellarator

    Science.gov (United States)

    Pedersen, T. Sunn; Boozer, A. H.; Brenner, P. W.; Durand de Gevigney, B.; Hahn, M. S.; Sarasola, X.; Senter, A.

    2009-11-01

    An overview of recent results from the Columbia Non-neutral Torus (CNT) will be given. CNT is a stellarator dedicated to studies of non-neutral and electron-positron plasmas [1]. CNT operates with a surplus of electrons -- most of the time with only a trace amount of ions (ni/ne Kremer et al., PRL 97, (2006) 095003 [3] P. W. Brenner et al., this poster session [4] Q. R. Marksteiner et al., PRL 100 (2008) 065002 [5] X. Sarasola Martin et al., this poster session [6] M. S. Hahn et al., Phys. Plasmas 16 (2009) 022105

  14. List of HMI-reports 1958-1984

    International Nuclear Information System (INIS)

    1985-01-01

    The Hahn-Meitner-Institute of Nuclear Research in Berlin issues a series of reports informing on the institute's research and development results. These reports can be obtained from the central library provided they are not marked 'out of print'. The list includes an alphabetic index of authors in which the annual reports of the institute, scientific reports from the sectors nuclear and radiation physics, radiation chemistry, nuclear chemistry and reactors as well as data processing and electronics are also pointed out. (orig.) [de

  15. Austria announces new money for research infrastructure and social sciences

    CERN Multimedia

    2008-01-01

    Austria's Minister for Science and Research, Johannes Hahn, has announced funding for research infrastructures and the social sciences, amounting to EUR 6.9 million in total. The largest chunk of the money will go to a new data processing centre for the analysis of data from the European Organisation for Nuclear Research (CERN). The idea is that the new centre will provide Austria with access to the key technology for solving highly complex scientific and technological problems, while strengthening Austria's domestic research infrastructure in the field of 'advanced communication networks'.

  16. 200 years with uranium

    International Nuclear Information System (INIS)

    Hermann, A.

    1989-01-01

    A short history beginning with the French Revolution and attendant scientific revolution in chemistry and the discovery of a new element from pitchblende, the notable contributions made by Klaproth, Peligot, Roentgen, Curie, and Planck are mentioned. The works of Rutherford, Einstein, Joliot, Joliot-Curie, Chadwick, Szilard, Hahn and Strassmann leading up to the discovery of fission are also briefly explained. The political and military implications (World War II) are described. The feature article concludes with an account of postwar nuclear-political history and the establishment of international scientific cooperation. 36 refs

  17. Belated recognition: Lise Meitner's role in the discovery of fission

    International Nuclear Information System (INIS)

    Sime, R.L.

    1990-01-01

    Although physicist Lise Meitner is known for the first theoretical explanation of nuclear fission, the discovery itself is generally attributed only to her co-workers Otto Hahn and Fritz Strassmann. In fact, however, Meitner was essential to the discovery at every phase: she brought the uranium investigation to Berlin, led the Berlin group for four years, and, even after fleeing Germany, provided the critical direction which culminated in the identification of barium in December 1983. Recognition of Lise Meitner's contributions remedies a significant historical omission, and places the discovery itself in its proper scientific context. (author) 48 refs

  18. Nuclear fission - the great discovery of the nuclear chemistry 50 years ago

    International Nuclear Information System (INIS)

    Eichler, B.

    1988-01-01

    A scientific discovery only seldom in that extent has influenced the scientific-technical progress and the historical development of mankind as the discovery of nuclear fission. The investigation of the reactions at irradiation of the uranium with neutrons was historically the order of the day. In 1938, the radiochemical proof of the nuclear fission succeeded by coprecipitation, fractional crystallization and application of the tracer method. To be master of these methods as well as their profound physico-chemical insight enabled O. Hahn and F. Strassmann to give reliable evidence of fission by identifying the fission product barium. (author)

  19. Using a progress computer for the direct acquisition and processing of radiation protection data

    International Nuclear Information System (INIS)

    Barz, H.G.; Borchardt, K.D.; Hacke, J.; Kirschfeld, K.E.; Kluppak, B.

    1976-01-01

    A process computer will be used in the Hahn-Meitner-Institute to rationalize radiation protection measures. Appr. 150 transmitters are to be connected with this computer. Especially the radiation measuring devices of a nuclear reactor, of hot cells, and of a heavy ion accelerator, as well as the emission- and environment monitoring systems will be connected. The advantages of this method are described: central data acquisition, central alarm and stoppage information, data processing of certain measurement values, possibility of quick disturbance analysis. Furthermore the authors report about the preparations already finished, particularly about data transmission of digital and analog values to the computer. (orig./HP) [de

  20. A multi-stage-flash desalination plant of relative small performance with an integrated pressurized water reactor as a nuclear heat source

    International Nuclear Information System (INIS)

    Peltzer, M.; Petersen, G.

    1976-01-01

    In the Krupp-GKSS joint study MINIPLEX the requirements for seawater-desalination-plants with a performance in the range of 10,000 to 80,000 m 3 /d heated by a nuclear reactor are investigated. The reactor concept is similar to the integrated pressurized water reactor (IPWR) of the nuclear ship OTTO HAHN. The calculated costs of the desalinated water show, that due to the fuel cost advantages of reactors small and medium nuclear desalination plants are economically competetive with oil-fired plants since the steep rise of oil price in autumn 1973. (orig.) [de

  1. On the extrema of Dirichlet's first eigenvalue of a family of punctured ...

    Indian Academy of Sciences (India)

    a closed linear subspace of Hs( ) × L2( ). Then by Hahn-Banach theorem there exists l1 ∈ (Hs( ) × L2( ))∗ such that l1 ◦ T = l and ||l1||op = ||l||op where ||l||op denotes the operator norm of l. Consider Ps × Id : Hs( )×L2( ) → Hs(Rd)×L2( ). We can write Hs(Rd) = Ps(Hs( )) ⊕ Z for some closed linear subspace Z of Hs(Rd). Then.

  2. Reports of the study group for neutron scattering

    International Nuclear Information System (INIS)

    1982-01-01

    This report covers the activities from July 1980 to December 1981. Within this period, the project for reactor extension (including a thermal neutron source and a hall for the neutron guide), was worked out in detail. Like the Fritz-Haber Institute, the Institute for Crystallography of Tuebingen University decided to send a number of guest-scientists for studies at the Hahn-Meitner Institute on a permanent basis. The HMI also organized the 5th International Conference on Small-Angle Scattering, held in Berlin in October 1980. The scientific research work was mainly concerned with magnetic systems, molecular crystals, and the determination of electron densities. (orig.)

  3. Rabi oscillation and electron-spin-echo envelope modulation of the photoexcited triplet spin system in silicon

    Science.gov (United States)

    Akhtar, Waseem; Sekiguchi, Takeharu; Itahashi, Tatsumasa; Filidou, Vasileia; Morton, John J. L.; Vlasenko, Leonid; Itoh, Kohei M.

    2012-09-01

    We report on a pulsed electron paramagnetic resonance (EPR) study of the photoexcited triplet state (S=1) of oxygen-vacancy centers in silicon. Rabi oscillations between the triplet sublevels are observed using coherent manipulation with a resonant microwave pulse. The Hahn echo and stimulated echo decay profiles are superimposed with strong modulations known as electron-spin-echo envelope modulation (ESEEM). The ESEEM spectra reveal a weak but anisotropic hyperfine coupling between the triplet electron spin and a 29Si nuclear spin (I=1/2) residing at a nearby lattice site, that cannot be resolved in conventional field-swept EPR spectra.

  4. Scientific publications 1973-1974

    International Nuclear Information System (INIS)

    1976-01-01

    This catalogue supplements the HMI report 'Scientific publications 1958-1972' (HMI-B-142). It lists all the publications by the Hahn-Meitner-Institut fuer Kernforschung Berlin of the years 1973-1974. The catalogue contains progress reports, dissertations, publications from scientific journals and anthologies if these are available in print. The titles listed in this catalogue are based on the HMI's annual reports. The classification according to fields and departments follows the development of the institute as outlined in the annual reports. Further classification is done according to the year of publication. (orig./HK) [de

  5. Zero-field optical magnetic resonance study of phosphorus donors in 28-silicon

    Science.gov (United States)

    Morse, Kevin J.; Dluhy, Phillip; Huber, Julian; Salvail, Jeff Z.; Saeedi, Kamyar; Riemann, Helge; Abrosimov, Nikolay V.; Becker, Peter; Pohl, Hans-Joachim; Simmons, S.; Thewalt, M. L. W.

    2018-03-01

    Donor spins in silicon are some of the most promising qubits for upcoming solid-state quantum technologies. The nuclear spins of phosphorus donors in enriched silicon have among the longest coherence times of any solid-state system as well as simultaneous high fidelity qubit initialization, manipulation, and readout. Here we characterize the phosphorus in silicon system in the regime of "zero" magnetic field, where a singlet-triplet spin clock transition can be accessed, using laser spectroscopy and magnetic resonance methods. We show the system can be optically hyperpolarized and has ˜10 s Hahn echo coherence times, even for applied static magnetic fields below Earth's field.

  6. Neutron scattering investigation on low-dimensional, quantum and frustrated magnetism and utilization of neutron polarization analysis. My first encounter with neutron research

    International Nuclear Information System (INIS)

    Kakurai, Kazuhisa

    2013-01-01

    My first encounter with neutron scattering research on low-dimensional magnetism at the Hahn-Meitner Institut under the supervision of Prof. H. Dachs and Prof. M. Steiner, were it all began, is accounted for. The polarized neutron analysis research on low-dimensional magnetism at the Institut Laue Langevin under the supervision of Dr. R. Pynn is also reported. I would like to dedicate this article to late Prof. H. Dachs expressing may deepest gratitude for his warm guidance during the early period of my neutron science carrier. (author)

  7. Disease: H01249 [KEGG MEDICUS

    Lifescience Database Archive (English)

    Full Text Available H01249 Ethylmalonic encephalopathy (EE) Ethylmalonic encephalopathy (EE) is an aut...TITLE ... Therapeutic trial in the first three Asian cases of ethylmalonic encephalopathy: response to riboflavin. ... JOURNAL ... J Inherit Metab Dis 24:870-3 (2001) DOI:10.1023/A:1013948409790 ...mer B, Rinaldo P, Hahn SH, Leonard J, Rahman S, Dionisi-Vici C, Garavaglia B, Gasparini P, Zeviani M ... TITLE ... Ethylmalonic encepha...lopathy is caused by mutations in ETHE1, a gene encoding a mitochondrial matrix pro

  8. Rheological and thixotropic behavior of banana (Musa Cavendishii) puree

    OpenAIRE

    Ibarz Ribas, Alberto; Falguera Pascual, Víctor; Garvín, Alfonso

    2010-01-01

    Se han estudiado las propiedades reológicas del puré de plátano. Para cuantificar el comportamiento tixotrópico, se han ajustado los datos experimentales a las ecuaciones de Hahn, Weltman i Figoni-Shoemaker. El estudio de la tixotropía se realizó en un rango de temperaturas entre 5 y 75ºC y se aplicó un gradiente de velocidad de 10 y 20 s-1, encontrando en todos los casos que la ecuación de Figoni-Shoemaker describe mejor la dependencia con el tiempo. El comportamie...

  9. Correlation of fracture toughness with tensile properties for irradiated 20% cold-worked 316 stainless steel

    International Nuclear Information System (INIS)

    Hamilton, M.L.; Garner, F.A.; Wolfer, W.G.

    1983-08-01

    A correlation has been developed which allows an estimate to be made of the toughness of austenitic alloys using more easily obtained tensile data. Tensile properties measured on 20% cold-worked AISI 316 specimens made from ducts and cladding irradiated in EBR-II were used to predict values for the plane strain fracture toughness according to a model originally developed by Krafft. Some microstructural examination is required to determine a parameter designated as the process zone size. In contrast to the frequently employed Hahn-Rosenfeld model, this model gives results which agree with recent experimental determinations of toughness performed in the transgranular failure regime

  10. Magnetic resonance elastometry using a single-sided permanent magnet

    International Nuclear Information System (INIS)

    Tan, Carl S; Marble, Andrew E; Ono, Yuu

    2012-01-01

    In this paper, we describe a magnetic resonance method of measuring material elasticity using a single-sided magnet with a permanent static field gradient. This method encodes sample velocity in a reciprocal space using Hahn spin-echoes with variable timing. The experimental results show a strong correlation between magnetic resonance signal attenuation and elasticity when an oscillating force is applied on the sample. This relationship in turn provides us with information about the displacement velocity experienced by the sample, which is inversely proportional to Young's modulus. The proposed method shows promise in offering a portable and cost-effective magnetic resonance elastography system. (paper)

  11. Industrial applications at the new cold neutron radiography and tomography facility of the HMI

    International Nuclear Information System (INIS)

    Kardjilov, N.; Hilger, A.; Manke, I.; Strobl, M.; Treimer, W.; Banhart, J.

    2005-01-01

    The new cold neutron radiography and tomography facility at the Hahn-Meitner-Institut Berlin is suited for the investigation of components and materials from different industrial fields. The high-flux measuring position of the facility allows real-time imaging of fast dynamical processes. Cold neutrons interact stronger with the matter compared to thermal neutrons, which leads to a much better radiography contrast. Some examples of different industry applications like investigations on discharging of a Lithium battery or on oil sediments in a vent pipe are presented

  12. Additional records and descriptions of the ant-mimetic plant bug genus Pilophorus from Thailand (Hemiptera: Heteroptera: Miridae: Phylinae: Pilophorini).

    Science.gov (United States)

    Yasunaga, Tomohide; Yamada, Kazutaka; Artchawakom, Taksin

    2014-05-09

    Eleven species of the ant-mimetic plant bug genus Pilophorus Hahn from Thailand are documented, with photographic images of live individuals. Four new species with conventional, moderate antlike shape, Pilophorus meteorus, P. saovapruki, P. subparallelus and P. suwimonae, are described. Two known Thai species, P. alstoni Schuh and P. typicus (Distant), are further reported and diagnosed. Biological information including host association is provided for P. alstoni, P. meteorus, P. saovapruki and P. typicus. A checklist of all currently known species of Pilophorus in Thailand and a key to known Thai species are included. Pilophorus typicus is reported from Singapore for the first time.

  13. HMI annual report 1989

    International Nuclear Information System (INIS)

    1990-01-01

    This report describes the activities of the Hahn-Meitner-Institut (HMI) on four special subjects: 1. Nuclear physics (nuclear reactions, nuclear structure, VICKSI accelerator development), 2. photochemical energy conversion (basic and material research, radiation chemistry), 3. structure research (theory of many-body systems, solid-state physics, neutron scattering, highly stressed metallic materials, trace nutrients in health and nutrition, and 4. information technics (software technics, real time systems, semiconductor subassembly). The following is presented for every special subject: a) the topics worked on in 1989, b) selected results and c) publications, lectures, theses submitted for diplomas and doctoral theses. (MM) [de

  14. The beam matching system between the preaccelerator and the main accelerator of the Van-de-Graaff cyclotron combination VICKSI

    International Nuclear Information System (INIS)

    Hinderer, G.

    1975-01-01

    The beam matching between the two accelerators of the heavy-ion accelerator combination VICKSI (Van de Graaff Isochron-Cyclotron Kombination fuer schwere Ionen) which is under construction at the Hahn-Meitner-Institut Berlin is investigated. The main elements are a combined gas- and carbon foil-stripper to increase the charge state of the ions and two clystron type high frequency bunchers for matching the longitudinal phase space. In order to minimize the enlargement of phase space due to energy- and angle straggling in the foil stripper a focus in all three dimensions is generated at this position. (orig./WL) [de

  15. Atomic Pioneers Book 2 From the Mid-19th to the Early 20th Century

    Energy Technology Data Exchange (ETDEWEB)

    Hiebert, Ray [University of Maryland; Hiebert, Roselyn

    1971-01-01

    This book gives a brief account of the lives and work of 26 men and women who contributed to the great surge of knowledge vital to atomic science from the 1800s to the mid-1900s. The 26 are: William Prout, Michael Faraday, Eilhardt Mitscherlich, Joseph Henry, Thomas Graham, Stanislao Cannizzaro, James Clerk Maxwell, Dmitri I. Mendeleev, Joseph Norman Lockyer, John William Strutt, Wilhelm Konrad Roentgen, Antione Henri Becquerel, Hendrik A. Lorentz, J.J. Thomson, Max Planck, Svante A. Arrhenius, Pierre Curie, Marie Curie, Pieter Zeeman, Theodore W. Richards, C.T.R. Wilson, Ernest Rutherford, Francis W. Aston, Frederick Soddy, Lise Meitner, and Otto Hahn.

  16. Proton Transfers at the Air-Water Interface

    Science.gov (United States)

    Mishra, Himanshu

    molecular scale. Our results unambiguously demonstrated the role of electrostatic-reorganization of interfacial water during proton transfer events. With our experimental and theoretical results on the 'superacidity' of the surface of mildly acidic water, we also explored implications on atmospheric chemistry and green chemistry. Our most recent results explained the basis for the negative charge of the air-water interface and showed that the water-hydrophobe interface could serve as a site for enhanced autodissociation of water compared to the condensed phase. In a nutshell, this thesis presents an in-depth account of complementary experiments and theory employed to answer the questions listed above. It is primarily based on the following articles: 1. H. Mishra, S. Enami, L. A. Stewart, R. J. Nielsen, M. R. Hoffmann, W. A. Goddard III, A. J. Colussi, Proceedings of the National Academy of Sciences (2012), 109(46), 18679--18683; 2. H. Mishra, S. Enami, R. J. Nielsen, W. A. Goddard III, M.R. Hoffmann, A. J. Colussi, Proceedings of the National Academy of Sciences (2012), 109(26), 10228--10232; 3. H. Mishra, R. J. Nielsen, S. Enami, M. R. Hoffmann, A. J. Colussi, W. A. Goddard III, International Journal of Quantum Chemistry (2013), 113(4), 413--417; 4. S. Enami, H. Mishra, M. R. Hoffmann, A. J. Colussi, Journal of Physical Chemistry A (2012), 116 (24), 6027--6032. On the recommendation of the thesis committee, Appendix I and II have been added based on the following articles: S. Enami, H. Mishra, M. R. Hoffmann, A. J. Colussi, Journal of Chemical Physics (2012) 136(15), 154707, 1-7, and H. Mishra, C. J. Yu, D. P. Chen, W. A. Goddard, N. F. Dalleska, M. R. Hoffmann, M. S. Diallo, Environmental Science & Technology, (2012) 46(16), 8998-9004.

  17. The Wolf-Rayet eclipsing binary HD 5980 in the Small Magellanic Cloud

    International Nuclear Information System (INIS)

    Breysacher, J.; Moffat, A.F.J.

    1982-01-01

    The Wolf-Rayet star HD 5980, which is probably associated with the bright HII region NGC 346 of the Small Magellanic Cloud, was found to be an eclipsing binary by Hoffmann, Stift and Moffat (1978). Breysacher and Perrier (1980) determined the orbital period, P=19.26 +- 0.003d, of the system whose light curve reveals a strongly eccentric orbit (e=0.47 for i=80 0 ). The behaviour of the light curve outside the eclipses shows that one is dealing with a rather complex binary system. An analysis of the spectroscopic data is presented here. (Auth.)

  18. Bicontinuous liquid crystals

    CERN Document Server

    Lynch, Mathew L

    2005-01-01

    PrefaceIntroduction AcknowledgmentsBicontinuous Cubic Liquid Crystalline Materials: A Historical Perspective and Modern Assessment; Kr̄e LarssonIntermediate Phases; Michael C. Holmes and Marc S. LeaverCubic Phases and Human Skin: Theory and Practice; Steven Hoath and Lars NorlňThe Relationship between Bicontinuous Inverted Cubic Phases and Membrane Fusion; D.P. SiegelAspects of the Differential Geometry and Topology of Bicontinuous Liquid-Crystalline Phases; Robert W. CorkeryNovel L3 Phases and Their Macroscopic Properties; R. Beck and H. HoffmannBicontinuous Cubic Phases of Lipids with Entra

  19. The Genus Ixodes (Acari: Ixodidae) in Mexico: Adult Identification Keys, Diagnoses, Hosts, and Distribution

    Science.gov (United States)

    2010-01-01

    Cricetidae and Hominidae ( Homo sapiens Linnaeus, 1758) (Mammalia) (Hoffmann, 1969). Note. The tick from Valle de Bravo, Estado de México, was...distribution El género Ixodes (Acari: Ixodidae) en México: claves de identifi cación para adultos, diagnosis, huéspedes y distribución Carmen Guzmán...Incorporación de Profesores de Carrera en Facultades y Escuelas para el Fortalecimiento de la Investigación (PROFIP). Tila María Pérez, Curator of CNAC

  20. Members of the State Council of Geneva

    CERN Multimedia

    Maximilien Brice

    2002-01-01

    Luncheon hosted by the Director-General for members of the State Council of Geneva: From left to right A. Naudi; J. May; M. Carlo Lamprecht, State Council - Employement, Foreign Office and Economic Departement; M. Robert Hensler, State Chancellor; L. Maiani, CERN Director General; H.F. Hoffmann; M. Robert Cramer, State Council - Environment, Agriculture and Interior Departement; J.Van Der Boon; M. Laurent Moutinot, State Council - Installation, equipment and housing Departement; C. Détraz; C. Wyss; P. Jenni; G. Hentsch; M. Pierre-François Unger, State Council - Health and Social Action Departement; G. Stassinakis; M. Bourquin, CERN Council President.

  1. A Study of Electrocyclic Reactions in a Molecular Junction

    DEFF Research Database (Denmark)

    Olsen, Stine Tetzschner; Nielsen, Mogens Brøndsted; Hansen, Thorsten

    2017-01-01

    must be in accordance to the orbital symmetry rules expressed by the Woodward-Hoffmann rules (when the electrodes do not significantly alter the molecular orbital appearances). We find these two requirements to be valid for the dianion of (1E,3Z,5E)-hexa-1,3,5-triene-1,6-diamine, and the Coulomb...... blockade diamonds were therefore modeled for this compound to elucidate how a dark photoswitching event would manifest itself in the stability plot. From this modeling of conductance as a function of gate and bias potentials, we predict a collapse in Coulomb diamond size, that is, a decrease in the height...

  2. Geneva University honours two CERN staff members

    CERN Multimedia

    2001-01-01

    Albert Hofmann Steve Myers On 8 June, two CERN staff members will receive Geneva University's highest distinction. On the proposal of the University's particle physicists, Steve Myers and Albert Hoffmann, who orchestrated LEP commissioning and operation and were instrumental in its success, will awarded the distinction of doctor honoris causa. The ceremony, interspersed with musical interludes, will be followed by a formal reception and is open to all. The Uni Dufour car park will be free to members of the public attending the ceremony. 8 June 2001 at 10.00 a.m. Uni Dufour, Auditoire Piaget 24, rue Général Dufour, Geneva.

  3. Lorentz covariant theory of gravitation

    International Nuclear Information System (INIS)

    Fagundes, H.V.

    1974-12-01

    An alternative method for the calculation of second order effects, like the secular shift of Mercury's perihelium is developed. This method uses the basic ideas of thirring combined with the more mathematical approach of Feyman. In the case of a static source, the treatment used is greatly simplified. Besides, Einstein-Infeld-Hoffmann's Lagrangian for a system of two particles and spin-orbit and spin-spin interactions of two particles with classical spin, ie, internal angular momentum in Moller's sense, are obtained from the Lorentz covariant theory

  4. Relativity and its roots

    CERN Document Server

    Hoffmann, Banesh

    1998-01-01

    In this fascinating, accessible introduction to one of the most revolutionary developments in modern physics, Einstein scholar Banesh Hoffmann recounts the successive insights that led to both the special and general theories of relativity.Using simple examples from everyday life, the author presents entertaining, nontechnical demonstrations of what relativity actually means and how it has revolutionized our ideas of time and space. Starting with the geometrical and cosmological ideas of the ancient Greeks, the author traces the succession of ideas and advances that paved the way for modern p

  5. Exact solutions of Lovelock-Born-Infeld black holes

    International Nuclear Information System (INIS)

    Aiello, Matias; Ferraro, Rafael; Giribet, Gaston

    2004-01-01

    The exact five-dimensional charged black hole solution in Lovelock gravity coupled to Born-Infeld electrodynamics is presented. This solution interpolates between the Hoffmann black hole for the Einstein-Born-Infeld theory and other solutions in the Lovelock theory previously studied in the literature. It is shown how the conical singularity of the metric around the origin can be removed by a proper choice of the black hole parameters. The differences existing with the Reissner-Nordstroem black holes are discussed. In particular, we show the existence of charged black holes with a unique horizon

  6. A Short Discussion of Crisis Management – Practical Experience with the 2006 Electoral Campaign in the Czech Republic

    Directory of Open Access Journals (Sweden)

    Tomáš Zdechovský

    2007-08-01

    Full Text Available The rival candidate – directly or through a “third person” – attacks, parodies or mocks the rival and his or her services, trying to persuade voters of the exclusivity of his or her own products. Negative campaigns fabricate situations which have not occurred, pointing out the weaknesses of the rival and trying to draw voters’ attention to them. During the Senate campaign in autumn 2006 for constituency No. 44, Chrudim, Petr Pithart had to face repeated media attacks (in Chrudimský deník by Chrudim businessman Ivan Hoffmann. What can be learned from Pithart’s defense.

  7. Tables of range and rate of energy loss of charged particles of energy 0,5 to 150 MeV

    Energy Technology Data Exchange (ETDEWEB)

    Williamson, C; Boujot, J P [Commissariat a l' Energie Atomique, Saclay (France). Centre d' Etudes Nucleaires

    1962-07-01

    The accurate knowledge of ranges and rates of energy loss of charged particles is very important for physicists working with nuclear accelerators. The tabulations of Aron, Hoffmann, and Williams and later of Madey and Rich have proved extremely useful. However, recent experimental range measurements have indicated the need for a new tabulation of the range-energy relation. It was felt that a useful purpose would be served by performing the calculations for a large number of stopping materials distributed throughout the periodic table, including the materials most commonly used as targets, detectors, and entrance foils. (authors)

  8. 现实版“马达加斯加”德国上演

    Institute of Scientific and Technical Information of China (English)

    2012-01-01

    A kangaroo is on the lam(在潜逃中)in Germany after breaking out of a wildlife park,with the help of a fox and a wild boar(野猪).Michael Hoffmann,assistant head of the Hochwildschutzpark,says the kangaroos got out of their cage after a young fox snuck into the park and dug a hole next to the cage’s fencing.Two of the three were then able to get out of the park entirely through

  9. Freqüência de parasitas intestinais em felinos mantidos em zoológicos Frequency of intestinal parasites in felines kept in zoos

    Directory of Open Access Journals (Sweden)

    G.C.K. Müller

    2005-08-01

    Full Text Available The endoparasites occurrence in felines confined in two Zoos, between December 1999 and April 2000, was studied. Fecal samples of 18 felines (Panthera tigris, Panthera leo, Felis serval, Panthera onca, Puma concolor, Leopardus tigrinus and Leopardus wiedii were collected and the methods of Faust, modified Baermann and Hoffmann, were used for fecal analyses. Three genera were identified in the feces: Trichuris spp., Toxocara spp. and Giardia spp. In the zoo of Pomerode, six animals (46% were infected by Trichuris spp. and/or Giardia spp. and all samples from the zoo of Brusque were infected by Trichuris spp., Toxocara spp. and Giardia spp.

  10. The Journal Microarrays

    Directory of Open Access Journals (Sweden)

    Shu-Kun Lin

    2011-10-01

    Full Text Available Our publishing company MDPI AG has its headquarters in Basel, Switzerland where there are thousands of scientists working in the laboratories of pharmaceutical companies and institutes including Novartis [1], F. Hoffmann-La Roche [2] and institutes affiliated with University of Basel [3]. In 1996, the first annual microplate conference MipTec was held in Basel, and the MipTec 2011 was held a few days ago in Basel [4]. I published a paper on microplate standardization presented at MipTec 1996 in MDPI’s longest-running journal Molecules [5-7]. [....

  11. Gravitational Lagrangians, Mach's Principle, and the Equivalence Principle in an Expanding Universe

    Science.gov (United States)

    Essén, Hanno

    2014-08-01

    Gravitational Lagrangians as derived by Fock for the Einstein-Infeld-Hoffmann approach, and by Kennedy assuming only a fourth rank tensor interaction, contain long range interactions. Here we investigate how these affect the local dynamics when integrated over an expanding universe out to the Hubble radius. Taking the cosmic expansion velocity into account in a heuristic manner it is found that these long range interactions imply Mach's principle, provided the universe has the critical density, and that mass is renormalized. Suitable higher order additions to the Lagrangians make the formalism consistent with the equivalence principle.

  12. Perceived parenting and social support: can they predict academic achievement in Argentinean college students?

    OpenAIRE

    de la Iglesia, Guadalupe; Freiberg Hoffmann, Agustin; Fernández Liporace, Mercedes

    2014-01-01

    Guadalupe de la Iglesia,1,2 Agustin Freiberg Hoffmann,2 Mercedes Fernández Liporace1,2 1National Council of Scientific and Technical Research (CONICET), 2University of Buenos Aires, Buenos Aires, Argentina Abstract: The aim of this study was to test the ability to predict academic achievement through the perception of parenting and social support in a sample of 354 Argentinean college students. Their mean age was 23.50 years (standard deviation =2.62 years) and most of them (83.3%...

  13. Multiparticle dynamics in an expanding universe

    Science.gov (United States)

    Anderson, James L.

    1995-11-01

    Approximate equations of motion for multiparticle systems in an expanding Einstein-deSitter universe are derived from the Einstein-Maxwell field equations using the Einstein-Infeld-Hoffmann surface integral method. At the Newtonian level of approximation one finds that, in comoving coordinates, both the Newtonian gravitational and Coulomb interactions in these equations are multiplied by the inverse third power of the scale factor R(t) appearing in the Einstein-deSitter field and they acquire a cosmic ``drag'' term. Nevertheless, both the period and luminosity size of bound two-body systems whose period is small compared to the Hubble time are found to be independent of t.

  14. Relações Internacionais no Brasil: a expansão dos manuais*

    Directory of Open Access Journals (Sweden)

    ROGÉRIO DE SOUZA FARIAS

    2011-01-01

    Full Text Available Resenha de BAUMANN, Renato, CANUTO, Otaviano, et al. Economia internacional: teoria e experiência brasileira. Rio de Janeiro: Elsevier. 2004. 442 p. ISBN: 85-353-1441-0. HERZ, Mônica e HOFFMANN, Andrea Ribeiro. Organizações internacionais: história e práticas. Rio de Janeiro: Elsevier, 2004. 268 p. ISBN: 85-352-1453-4. NOGUEIRA, João Pontes e MESSARI, Nizar. Teoria das relações internacionais: correntes e debates. Rio de Janeiro: Elsevier, 2005. 250 p. 85-352- 1687-1.

  15. All new for NA62

    CERN Multimedia

    Antonella Del Rosso

    2012-01-01

    This week sees the start of the first run of the new NA62 experiment. This will be a unique opportunity for the collaboration to test its new beam, new detectors and new data acquisition system before the physics run in 2014. Speaking to the Bulletin, the NA62 technical coordinator Ferdinand Hahn shares the many challenges that the various teams faced to be on time for beam. Ready, steady, start!   A Large Angle Veto detector (white) in place in the NA62 decay volume (blue). With components from almost all the detectors in place downstream of the decay point of the mother particles – the kaons – and of the KTAG detector that tags the kaons before they decay, NA62 is ready for its first technical run. This unique run will test all the equipment as well as the trigger and the data acquisition systems. “This year, we will have about five weeks of beam from the SPS before the long shutdown of all the CERN machines,” says Ferdinand Hahn, NA62 Technical Co-...

  16. Passage of nuclear powered ships in territorial waters and their stay in harbours

    International Nuclear Information System (INIS)

    Lucchini, L.; Voelckel, M.

    1975-01-01

    The specificity of rules governing entry of nuclear ships in the territorial waters of a State and their liability are reviewed. The concept of innocent passage prevailing for navigation in territorial waters is examined as are the protective measures taken by the Host State, in particular the prior authorisation characterizing thate State's discretionary powers of acceptance or refusal to admit the nuclear ship and the control over it. Liability rules and the nature of liability are analysed on the basis of agreements on the Savannah and the Otto Hahn. The importance of State intervention is demonstrated in its relationship with the operator particularly regarding control of operation and financial assistance. Also mentioned is liability for breach of the rules of procedure laid down in bilateral agreements, and in this context, a study is made of the rules of conduct for nuclear ships in territorial waters set out in the Savannah and Otto Hahn agreements. The liability of the coastal State is reviewed from the viewpoint of its grounds and possibilities of extension, given the development of nuclear navigation and the importance attached to protection against marine environmental pollution [fr

  17. Economics and politics of climate change

    International Nuclear Information System (INIS)

    Hahn, R.W.

    1998-01-01

    A fundamental issue is what steps, if any, nations should take to control greenhouse gas emissions. Robert Hahn argues that over the next decade the best strategy for policy makers is to build institutions that can address climate change in the future by developing a capacity at the nation-state level to measure greenhouse gas emissions and to implement and enforce cost-effective ways of limiting emissions. Policy makers must also improve the capacity of an international body to assess greenhouse gas inventories and review national policies. Hahn recommends that the developed nations craft an agreement for the next decade that provides a slight emission limitation and allows for a series of case studies, in which developing nations would participate, to preserve diversity and build useful institutional knowledge. The Economics and Politics of Climate Change is one in a series of new AEI studies related to the globalization of environmental policy. These studies will focus on specific issues and on the new institutional arrangements required to deal with them. A list of publications in this series appears inside

  18. Spurious solutions in few-body equations

    International Nuclear Information System (INIS)

    Adhikari, S.K.; Gloeckle, W.

    1979-01-01

    After Faddeev and Yakubovskii showed how to write connected few-body equations which are free from discrete spurious solutions various authors have proposed different connected few-body scattering equations. Federbush first pointed out that Weinberg's formulation admits the existence of discrete spurious solutions. In this paper we investigate the possibility and consequence of the existence of spurious solutions in some of the few-body formulations. Contrary to a proof by Hahn, Kouri, and Levin and by Bencze and Tandy the channel coupling array scheme of Kouri, Levin, and Tobocman which is also the starting point of a formulation by Hahn is shown to admit spurious solutions. We can show that the set of six coupled four-body equations proposed independently by Mitra, Gillespie, Sugar, and Panchapakesan, by Rosenberg, by Alessandrini, and by Takahashi and Mishima and the seven coupled four-body equations proposed by Sloan and related by matrix multipliers to basic sets which correspond uniquely to the Schroedinger equation. These multipliers are likely to give spurious solutions to these equations. In all these cases spuriosities are shown to have no hazardous consequence if one is interested in studying the scattering problem

  19. Shielding analysis method applied to nuclear ship 'MUTSU' and its evaluation based on experimental analyses

    International Nuclear Information System (INIS)

    Yamaji, Akio; Miyakoshi, Jun-ichi; Iwao, Yoshiaki; Tsubosaka, Akira; Saito, Tetsuo; Fujii, Takayoshi; Okumura, Yoshihiro; Suzuoki, Zenro; Kawakita, Takashi.

    1984-01-01

    Procedures of shielding analysis are described which were used for the shielding modification design of the Nuclear Ship ''MUTSU''. The calculations of the radiation distribution on board were made using Sn codes ANISN and TWOTRAN, a point kernel code QAD and a Monte Carlo code MORSE. The accuracies of these calculations were investigated through the analysis of various shielding experiments: the shield tank experiment of the Nuclear Ship ''Otto Hahn'', the shielding mock-up experiment for ''MUTSU'' performed in JRR-4, the shielding benchmark experiment using the 16 N radiation facility of AERE Harwell and the shielding effect experiment of the ship structure performed in the training ship ''Shintoku-Maru''. The values calculated by the ANISN agree with the data measured at ''Otto Hahn'' within a factor of 2 for fast neutrons and within a factor of 3 for epithermal and thermal neutrons. The γ-ray dose rates calculated by the QAD agree with the measured values within 30% for the analysis of the experiment in JRR-4. The design values for ''MUTSU'' were determined in consequence of these experimental analyses. (author)

  20. Communication: Proton NMR dipolar-correlation effect as a method for investigating segmental diffusion in polymer melts

    International Nuclear Information System (INIS)

    Lozovoi, A.; Mattea, C.; Stapf, S.; Herrmann, A.; Rössler, E. A.; Fatkullin, N.

    2016-01-01

    A simple and fast method for the investigation of segmental diffusion in high molar mass polymer melts is presented. The method is based on a special function, called proton dipolar-correlation build-up function, which is constructed from Hahn Echo signals measured at times t and t/2. The initial rise of this function contains additive contributions from both inter- and intramolecular magnetic dipole-dipole interactions. The intermolecular contribution depends on the relative mean squared displacements (MSDs) of polymer segments from different macromolecules, while the intramolecular part reflects segmental reorientations. Separation of both contributions via isotope dilution provides access to segmental displacements in polymer melts at millisecond range, which is hardly accessible by other methods. The feasibility of the method is illustrated by investigating protonated and deuterated polybutadiene melts with molecular mass 196 000 g/mol at different temperatures. The observed exponent of the power law of the segmental MSD is close to 0.32 ± 0.03 at times when the root MSD is in between 45 Å and 75 Å, and the intermolecular proton dipole-dipole contribution to the total proton Hahn Echo NMR signal is larger than 50% and increases with time.

  1. Effects of substituting D2O for H2O on SANS measurements of hydrating cement

    International Nuclear Information System (INIS)

    Sabine, T.M.; Prior, M.J.

    2002-01-01

    Full text: Small angle neutron scattering (SANS) measurements of cement have been found useful in the investigation of the shape and growth of particles formed during hydration. Calorimetric measurements of hydrating cement samples have shown that the substitution of D 2 O for H 2 O has the effect of slowing the hydration process. In order to throw some light on this phenomenon, we have measured SANS profiles from cement samples hydrating in H 2 O and D 2 O. This involved obtaining SANS profiles at half-hourly intervals during the initial stage of hydration. The only instruments capable of this at present are located at the Hahn-Meitner Institute in Berlin and at the Nuclear Physics Institute at Rez near Prague. Initial experiments carried out on the V12a UltraSANS diffractometer at The Hahn-Meitner Institute were only partially successful owing to excessive multiple scattering in the D 2 O samples. Subsequent measurements were therefore carried out on the similar instrument at Rez near Prague which operates at a shorter neutron wavelength. Results from these measurements show profound differences in the evolution of cements hydrating in D 2 O and those hydrating in H 2 O

  2. Alarcón-Elbal, P.M. & Lucientes, J. 2012. Actualización del catálogo de Culicoides Latreille, 1809 (Diptera, Ceratopogonidae de España. Graellsia 68:353–362. doi:10.3989/graellsia.2012.v68.064. Bilk, S. Schulze, C. Fischer, M. Beer, M. Hlinak, A. & Hoffmann, B. 2012. Organ distribution of Schmallenberg virus RNA in malformed newborns. Vet. Microbiol. 159:236–238. doi:10.1016/j.vetmic.2012.03.035. De Blas, I., Ruiz-Zarzuela, I. & Vallejo, A. 2006. WinEpi: Working In Epidemiology. An Online Epidemiological Tool. Page in Proceedings of the 11th International Symposium on Veterinary Epidemiology and Economics, Cairns, Australia. Cameron, A.R. & Baldock, F.C. 1998. A new probability formula for surveys to substantiate freedom from disease.. Prev. Vet. Med. 34:1–17. Doceul, V., Lara, E., Sailleau, C., Belbis, G. Richardson, J., Bréard, E., Viarouge, C., Dominguez, M., Hendrikx, P., Calavas, D., Desprat, A., Languille, J., Comtet, L., Pourquier, P., Eléouët, J.-F., Delmas, B., Marianneau, P., Vitour, D. & Zientara, S. 2013. Epidemiology, molecular virology and diagnostics of Schmallenberg virus, an emerging orthobunyavirus in Europe.. Vet. Res. 44:1–13. doi:10.1186/1297-9716-44-31. Elbers, A.R.W., Meiswinkel, R., van Weezep, E., Sloet van Oldruitenborgh-Oosterbaan, M.M. & Engbert, A.K. 2013. Schmallenberg Virus in Culicoides spp. Biting Midges, the Netherlands, 2011. Emerg. Infect. Dis. 19:106–109. doi:10.3201/eid1901.121054. Gariglinany, M.-M., Hoffmann, B., Dive, M., Sartelet, A., Bayrou, C., Cassart, D., Beer, M. & Desmecht, D. 2012. Schmallenberg Virus in Calf Born at Term with Porencephaly, Belgium. Emerg. Infect. Dis. 18. doi:10.3201/eid1806.120104. Greiner, E.C., Mo, C.L., Homan, E.J., Gonzalez, J., Oviedo, M.T., Thompson, L.H. & Gibbs, E.P. 1993. Epidemiology of bluetongue in Central America and the Caribbean: initial entomological findings. Regional Bluetongue Team. Med Vet Entomol 7:309–315. doi:10.1111/j.1365-2915.1993.tb00697.x. Hern

    Directory of Open Access Journals (Sweden)

    Marlene Villegas-Salas

    2017-12-01

    Full Text Available Schmallenberg virus affects ruminants, which causes significant economic losses.  The virus is transmitted through vectors of the genus Culicoides; however, other studies do not rule out the possibility of sexual transmission due to its presence in semen. For this reason, the National Service of Animal Health of Costa Rica (SENASA imposed restrictions on the import of semen from animals from the European Union in 2013. Consequently, SENASA conducted a study to determine the presence or absence of antibodies against this virus in bovine, ovine and caprine samples. As a result, no antibodies against this virus were detected in the 748 samples tested. It was concluded that Schmallenberg virus was not circulating in Costa Rican ruminants during the tested period.

  3. MOD-AGE - an algorithm for age-depth model construction; U-series dated speleothems case study

    Science.gov (United States)

    Hercman, H.; Pawlak, J.

    2012-04-01

    We present MOD-AGE - a new system for chronology construction. MOD-AGE can be used for profiles that have been dated by different methods. As input data, the system uses the following basic measurements: activities, atomic ratios or age, as well as depth measurement. Based on probability distributions describing the measurement results, MOD-AGE estimates the age~depth relation and its confidence bands. To avoid the use of difficult-to-meet assumptions, MOD-AGE uses nonparametric methods. We applied a Monte Carlo simulation to model age and depth values based on the real distribution of counted data (activities, atomic ratios, depths etc.). Several fitting methods could be applied for estimating the relationships; based on several tests, we decide to use LOESS method (locally weighted scatterplot smoothing). The stratigraphic correction procedure applied in the MOD-AGE program uses a probability calculus, which assumes that the ages of all the samples are correctly estimated. Information about the probability distribution of the samples' ages is used to estimate the most probable sequence that is concordant according to the superposition rule. MOD-AGE is presented as a tool for the chronology construction of speleothems that have been analyzed by the U-series method, and it is compared to the StalAge algorithm presented by D. Scholtz and D.L Hoffmann (2011). Scholtz, D., Hoffmann, D. L., 2011. StalAge - An algorithm designed for construction of speleothem age models. Quaternary Geochronology 6, 369-382.

  4. [The dishonest, the ignorant and the insane artists--psychopathography and other paths to soul of the artist].

    Science.gov (United States)

    Høyersten, J G

    2000-04-10

    Psychopathography is a specific kind of biography focusing on psychological and psychopathological aspects of the personality and their significance for creative activity, especially in famous persons. Psychopathography evolved as a discipline from the 1830's onwards, as a product of psychiatry emerging as a science, reflecting its reductionist and nosological approach. An illustration of this method is the analysis of the author E.T.A. Hoffmann, a prototypical representative of the German romanticism at the beginning of the century. Hoffmann himself expresses, in allegorical terms, the menacing, irrational and unconscious domains of the human soul. Romanticism may be seen as a forerunner of the psychoanalytic movement. Confronted with modernism in art, pathographic considerations were to a large extent based upon the object of art itself, often with arrogant and repudiating conclusions concerning the artist. Classical psychoanalysis has had a marked tendency to deduce a great deal about the personality of the artist or the writer solely from analysis of a picture or written text. The pathographic approach of the first century of scientific psychiatry has had a renaissance over the last 15-20 years: The ever increasing interest in affective syndromes has entailed a tendency to trace and identify affective pathology in artists and writers, deceased or alive, often emphasizing the affective dynamics of the creative process, aspects also noted by the classical pathographers. More recent studies of the creative personality may also present improved instruments for the study of the creative process.

  5. Correction to: Tocilizumab: A Review in Rheumatoid Arthritis.

    Science.gov (United States)

    Scott, Lesley J

    2018-02-01

    The article Tocilizumab: A Review in Rheumatoid Arthritis, written by Lesley J. Scott, was originally published Online First without open access. After publication in volume 77, issue 17, pages 1865-1879 F. Hoffmann-La Roche Ltd requested that the article be Open Choice to make the article an open access publication. Post-publication open access was funded by F. Hoffmann-La Roche Ltd. Further details may be found at http://www.medengine.com/Redeem/68FBF06068F81EA7 . The article is forthwith distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License ( http://creativecommons.org/licenses/by-nc/4.0/ ), which permits any noncommercial use, duplication, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

  6. UV-induced mitotic co-segregation of genetic markers in Candida albicans: Evidence for linkage

    International Nuclear Information System (INIS)

    Crandall, M.

    1983-01-01

    Parasexual genetic studies of the medically important yeast Candida albicans were performed using the method of UV-induced mitotic segregation. UV-irradiation of the Hoffmann-La Roche type culture of C. albicans yielded a limited spectrum of mutants at a relatively high fequency. This observation suggested natural heterozygosity. Canavanine-sensitive (CanS) segregants were induced at a frequency of 7.6 . 10 -3 . Double mutants that were both CanS and methionine (Met - ) auxotrophs were induced at a frequency of 7.4 . 10 -3 . The single Met - segregant class was missing indicating linkage. UV-induced CanS or Met - CanS segregants occurred occasionally in twin-sectored colonies. Analyses of the sectors as well as the observed and missing classes of segregants indicated that genes met and can are linked in the cis configuration. The proposed gene order is: centromere - met - can. Thus, it is concluded that the Hoffmann-La Roche strain of C. albicans is naturally heterozygous at two linked loci. These findings are consistent with diploidy. (orig.)

  7. Early application of tail nerve electrical stimulation-induced walking training promotes locomotor recovery in rats with spinal cord injury.

    Science.gov (United States)

    Zhang, S-X; Huang, F; Gates, M; Shen, X; Holmberg, E G

    2016-11-01

    This is a randomized controlled prospective trial with two parallel groups. The objective of this study was to determine whether early application of tail nerve electrical stimulation (TANES)-induced walking training can improve the locomotor function. This study was conducted in SCS Research Center in Colorado, USA. A contusion injury to spinal cord T10 was produced using the New York University impactor device with a 25 -mm height setting in female, adult Long-Evans rats. Injured rats were randomly divided into two groups (n=12 per group). One group was subjected to TANES-induced walking training 2 weeks post injury, and the other group, as control, received no TANES-induced walking training. Restorations of behavior and conduction were assessed using the Basso, Beattie and Bresnahan open-field rating scale, horizontal ladder rung walking test and electrophysiological test (Hoffmann reflex). Early application of TANES-induced walking training significantly improved the recovery of locomotor function and benefited the restoration of Hoffmann reflex. TANES-induced walking training is a useful method to promote locomotor recovery in rats with spinal cord injury.

  8. [Establishing biological reference intervals of alanine transaminase for clinical laboratory stored database].

    Science.gov (United States)

    Guo, Wei; Song, Binbin; Shen, Junfei; Wu, Jiong; Zhang, Chunyan; Wang, Beili; Pan, Baishen

    2015-08-25

    To establish an indirect reference interval based on the test results of alanine aminotransferase stored in a laboratory information system. All alanine aminotransferase results were included for outpatients and physical examinations that were stored in the laboratory information system of Zhongshan Hospital during 2014. The original data were transformed using a Box-Cox transformation to obtain an approximate normal distribution. Outliers were identified and omitted using the Chauvenet and Tukey methods. The indirect reference intervals were obtained by simultaneously applying nonparametric and Hoffmann methods. The reference change value was selected to determine the statistical significance of the observed differences between the calculated and published reference intervals. The indirect reference intervals for alanine aminotransferase of all groups were 12 to 41 U/L (male, outpatient), 12 to 48 U/L (male, physical examination), 9 to 32 U/L (female, outpatient), and 8 to 35 U/L (female, physical examination), respectively. The absolute differences when compared with the direct results were all smaller than the reference change value of alanine aminotransferase. The Box-Cox transformation combined with the Hoffmann and Tukey methods is a simple and reliable technique that should be promoted and used by clinical laboratories.

  9. Report in the Energy and Intensity Frontiers, and Theoretical at Northwestern University

    Energy Technology Data Exchange (ETDEWEB)

    Velasco, Mayda [Northwestern Univ., Evanston, IL (United States); Schmitt, Michael [Northwestern Univ., Evanston, IL (United States); deGouvea, Andre [Northwestern Univ., Evanston, IL (United States); Low, Ian [Northwestern Univ., Evanston, IL (United States); Petriello, Frank [Northwestern Univ., Evanston, IL (United States); Schellman, Heidi [Northwestern Univ., Evanston, IL (United States)

    2016-03-31

    The Northwestern (NU) Particle Physics (PP) group involved in this report is active on all the following priority areas: Energy and Intensity Frontiers. The group is lead by 2 full profs. in experimental physics (Schmitt and Velasco), 3 full profs. in theoretical physics (de Gouvea, Low and Petriello), and Heidi Schellman who is now at Oregon State. Low and Petriello hold joint appointments with the HEP Division at Argonne National Laboratory. The theoretical PP research focuses on different aspects of PP phenomenology. de Gouvea dedicates a large fraction of his research efforts to understanding the origin of neutrino masses, neutrino properties and uncovering other new phenomena, and investigating connections between neutrino physics and other aspects of PP. Low works on Higgs physics as well as new theories beyond the Standard Model. Petriello pursues a research program in precision QCD and its associated collider phenomenology. The main goal of this effort is to improve the Standard Model predictions for important LHC observables in order to enable discoveries of new physics. In recent years, the emphasis on experimental PP at NU has been in collider physics. NU expands its efforts in new directions in both the Intensity and the Cosmic Frontiers (not discussed in this report). In the Intensity Frontier, Schmitt has started a new effort on Mu2e. He was accepted as a collaborator in April 2015 and is identified with important projects. In the Energy Frontier, Hahn, Schmitt and Velasco continue to have a significant impact and expanded their CMS program to include R&D for the real-time L1 tracking trigger and the high granularity calorimeter needed for the high-luminosity LHC. Hahn is supported by an independent DOE Career Award and his work will not be discussed in this document. The NU analysis effort includes searches for rare and forbidden decays of the Higgs bosons, Z boson, top quark, dark matter and other physics beyond the standard model topics. Four

  10. A Seasonal Feature in Mercury's Exosphere Caused by Meteoroids from Comet Encke

    Science.gov (United States)

    Burger, M. H.; Christou, A.; Killen, R. M.

    2015-12-01

    The planet Mercury is enveloped in a tenuous atmosphere, the result of a delicate balance between poorly understood sources and sinks (Killen et al, 2007). Meteoroid impacts are a contributing source process (eg Wurz et al, 2010), but their importance compared to other production mechanisms is uncertain. Killen and Hahn (2015) found that seasonal variations in Mercury's calcium exosphere as observed by the MASCS spectrometer onboard the MESSENGER spacecraft (Burger et al, 2014) may be due to impact vaporization of surface material by the infall of interplanetary dust. However, an additional dust source was required to explain a Ca excess at a True Anomaly Angle (TAA) of 25±5 deg. Killen and Hahn suggested that dust from comet 2P/Encke, crossing Mercury's orbital plane at TAA=45 deg, may be the culprit. We have simulated numerically the stream of meteoroids ejected from Encke to test the Killen and Hahn conjecture. We find that Encke particles evolving solely under the gravity of the major planets and the Sun encounter Mercury at TAA=50-60 deg, well after the peak of the Ca excess emission. However, the addition of Poynting-Robertson (P-R) drag in our model couples the age and size of the meteoroids to the TAA at encounter, causing smaller, older particles to encounter Mercury progressively earlier in the Hermean year. In particular, mm-sized grains ejected between 10 and 20 kyr ago impact on the nightside hemisphere of Mercury at TAA = 350-30 deg, near the observed peak time of the exospheric feature. During this presentation, we will describe our model results and discuss their implications for the physical mechanism that injects impact-liberated Ca into sunlight as well as the origin and evolution of the Encke stream of meteoroids. Astronomical research at the Armagh Observatory is funded by the Northern Ireland Department of Culture, Arts and Leisure (DCAL). RMK was supported by NASA Grant NNX07AR78G-S01 as a Participating Scientist on the NASA MESSENGER

  11. A seasonal feature in Mercury’s exosphere caused by meteoroids from comet Encke

    Science.gov (United States)

    Christou, Apostolos; Killen, Rosemary M.; Burger, Matthew H.

    2015-11-01

    The planet Mercury is enveloped in a tenuous atmosphere, the result of a delicate balance between poorly understood sources and sinks (Killen et al, 2007). Meteoroid impacts are a contributing source process (eg Wurz et al, 2010), but their importance compared to other production mechanisms is uncertain.Killen and Hahn (2015) found that seasonal variations in Mercury's calcium exosphere as observed by Mercury Atmospheric, and Surface Composition Spectrometer (MASCS) onboard the MErcury Surface, Space ENvironment, GEochemistry, and Ranging (MESSENGER) spacecraft (Burger et al, 2014) may be attributed to impact vaporization of surface material by the infall of interplanetary dust. However, an additional dust source was required to explain a Ca excess at a True Anomaly Angle (TAA) of 25±5 deg. Killen and Hahn suggested that dust from comet 2P/Encke, crossing Mercury's orbital plane at TAA=45 deg, may be the culprit.We have simulated numerically the stream of meteoroids ejected from Encke in order to identify those particles that impact Mercury at the present epoch and test the Killen and Hahn conjecture. We find that Encke particles evolving solely under the gravity of the major planets and the Sun encounter Mercury at TAA=50-60 deg, well after the peak of the Ca excess emission. This result is independent of the time of ejection. However, the addition of Poynting-Robertson (P-R) drag in our model couples the age and size of the meteoroids to the TAA at encounter, causing smaller, older particles to encounter Mercury progressively earlier in the Hermean year. In particular, mm-sized grains ejected between 10 and 20 kyr ago impact on the nightside hemisphere of Mercury at TAA = 350-30 deg, near the observed peak time of the exospheric feature.During this presentation, we will describe our model results and discuss their implications for the physical mechanism that injects impact-liberated Ca into sunlight as well as the origin and evolution of the Encke stream of

  12. HMI Department of Radiation Chemistry: Results of scientific activities in 1984

    International Nuclear Information System (INIS)

    1985-01-01

    In the radiation chemistry department of the Hahn-Meitner-Institute in Berlin, 4 subjects are treated largely the progress of which made in 1984 is herein reported: 1) Interface processes and energy conversion (reaction pathways of photoinduced charge carriers and their in energy conversion mechanisms); 2) Pulse radiolysis (generation and investigation of shortlived chemically quick-reacting particles); 3) Kinematics (reciprocal action with ion, atom and molecule collisions; clarification of the dynamics of chemical reactions; 4) Insulators and plastics/physical and chemical primary processes when these materials are subjected to high-energy radiation, light or UV light). A list of publications and lectures is added to complement the description of results gained from R and D work. (BR) [de

  13. An overview of the teaching of nuclear chemistry

    International Nuclear Information System (INIS)

    Seaborg, G.I.

    1990-01-01

    Otto Hahn's book, Applied Radiochemistry, published in 1936, marked the author's entry into this field. Notes concerning a lecture course, An Introduction to Nuclear Chemistry, given during the summer of 1942 at the University of Chicago, as an introduction to the Plutonium Project of the Manhattan District, were widely distributed for use by participants in the Project. Nuclear chemistry courses, undergraduate and graduate, instigated at Berkeley in 1946, were taken by large numbers of students many of who became pioneers in the field. Noteworthy is Friedlander's and Kennedy's 1949 textbook, Introduction to Radiochemistry (and subsequent revisions). These courses and this book serve as typical examples, many other such courses were taught and books published during the intervening years. More recently the Department of Energy Summer School in Nuclear Chemistry (for high school students) at San Jose State University has helped to revive student interest in nuclear chemistry

  14. Einstein, Ethics and the Atomic Bomb

    Science.gov (United States)

    Rife, Patricia

    2005-03-01

    Einstein voiced his ethical views against war as well as fascism via venues and alliances with a variety of organizations still debated today. In 1939, he signed a letter to President Roosevelt (drafted by younger colleagues Szilard, Wigner and others) warning the U.S.government about the danger of Nazi Germany gaining control of uranium in the Belgian-controlled Congo in order to develop atomic weapons, based on the discovery of fission by Otto Hahn and Lise Meitner. In 1945, he became a member of the Princeton-based ``Emergency Committee for Atomic Scientists'' organized by Bethe, Condon, Bacher, Urey, Szilard and Weisskopf. Rare Einstein slides will illustrate Dr.Rife's presentation on Albert Einstein's philosophic and ethical convictions about peace, and public stance against war (1914-1950).

  15. HMI scientific publications 1991

    International Nuclear Information System (INIS)

    Ruehlemann, S.

    1992-08-01

    The publications of the staff of the Hahn-Meitner-Institute (HMI) are listed in this catalogue. It contains articles which have been published in journals, books or book chapters, theses or HMI-reports in 1988. Only those publications are included of which a copy was provided to the library. Each title is indexed by a publication number, composed of a code indicating the field of research, the year of publication, and a running number. The fields of research are physics, chemistry, solid state and materials research, and information techniques. The research reactor BER II, the heavy ion accelerator VICKSI, the central information and computer operation, the electronics, and the central library belong to the infrastructure of the HMI. (orig.) [de

  16. Elastic scattering of gamma radiation in solids

    International Nuclear Information System (INIS)

    Goncalves, O.D.

    1987-01-01

    The elastic scattering of gamma rays in solids is studied: Rayleigh scattering as well as Bragg scattering in Laue geometries. We measured Rayleigh cross sections for U, Pb, Pt, W, Sn, Ag, Mo, Cd, Zn, and Cu with gamma energies ranging from 60 to 660 KeV and angles between 5 0 and 140 0 . The experimental data are compared with form factor theories and second order perturbation theories and the limits of validity of both are established. In the 60 KeV experiment, a competition between Rayleigh and Bragg effects is found in the region of low momentum transfer. The Bragg experiments were performed using the gamma ray diffractometer from the Hahn-Meitner Institut (Berlin) with gammas of 317 KeV and angles up to 2 0 . In particular, we studied the effect of annealing in nearly perfect Czochralski Silicon crystals with high perfection in the crystallographic structure. The results are compared with Kinematical and Dynamical theories. (author)

  17. 1932: ''annus mirabilis'' for nuclear physics

    International Nuclear Information System (INIS)

    Hughes, J.

    1998-01-01

    1932 was an extraordinary year for nuclear physics: J. Chadwick discovered the neutron, C.D.Anderson identified the positron and the first artificial disintegration was realised with a particle accelerator by J.Cockcroft and E.Walton. These 3 discoveries transformed nuclear physics by providing basis on which any new research could be led. The neutron allowed the discovery of artificial radioactivity by Joliot-Curie in 1934 and later the discovery of nuclear fission by O. Hahn, F. Strassman and L. Meitner. The positron brought new concepts about cosmic radiation and drew the way to the discovery of new particles. Artificial disintegration paved the way to the ever-bigger machines. It was the beginning of the era of breaking nuclei. 1932 deserves its title of ''annus mirabilis'' of physics. This article presents the quick evolution of ideas, concepts in nuclear physics in the thirties. (A.C.)

  18. Persistence of slow fluctuations in the overdoped regime of Ba(Fe1-xRhx)2As2 superconductors

    Energy Technology Data Exchange (ETDEWEB)

    Bossoni, L. [Univ. of Pavia (Italy); Leiden Univ. (Netherlands); Moroni, M. [Univ. of Pavia (Italy); Julien, M. H. [Leiden Univ. (Netherlands); Canfield, Paul C. [Ames Lab. and Iowa State Univ., Ames, IA (United States); Mayaffre, H. [Leiden Univ. (Netherlands); Reyes, A. [National High Magnetic Field Lab., Tallahassee, FL (United States); Halperin, W. P. [Northwestern Univ., Evanston, IL (United States); Carretta, P. [Univ. of Pavia (Italy)

    2016-04-15

    We present nuclear magnetic resonance evidence that very slow (1 MHz) spin fluctuations persist into the overdoped regime of Ba(Fe1-xRhx)2As2 superconductors. Measurements of the 75As spin echo decay rate, obtained both with Hahn Echo and Carr Purcell Meiboom Gill pulse sequences, show that the slowing down of spin uctuations can be described by short-range diffusive dynamics, likely involving domain walls motions separating (π/a, 0) from (0, π/a) correlated regions. This slowing down of the fluctuations is weakly sensitive to the external magnetic field and, although fading away with doping, it extends deeply into the overdoped regime.

  19. Basic hypergeometric functions and covariant spaces for even-dimensional representations of Uq[osp(1/2)

    International Nuclear Information System (INIS)

    Aizawa, N; Chakrabarti, R; Mohammed, S S Naina; Segar, J

    2007-01-01

    Representations of the quantum superalgebra U q [osp(1/2)] and their relations to the basic hypergeometric functions are investigated. We first establish Clebsch-Gordan decomposition for the superalgebra U q [osp(1/2)] in which the representations having no classical counterparts are incorporated. Formulae for these Clebsch-Gordan coefficients are derived, and is observed that they may be expressed in terms of the Q-Hahn polynomials. We next investigate representations of the quantum supergroup OSp q (1/2) which are not well defined in the classical limit. Employing the universal T-matrix, the representation matrices are obtained explicitly, and found to be related to the little Q-Jacobi polynomials. Characteristically, the relation Q = -q is satisfied in all cases. Using the Clebsch-Gordan coefficients derived here, we construct new noncommutative spaces that are covariant under the coaction of the even-dimensional representations of the quantum supergroup OSp q (1/2)

  20. 'Y' a distributed resource sharing system in nuclear research environment

    International Nuclear Information System (INIS)

    Popescu-Zeletin, R.

    1986-01-01

    The paper outlines the rationales for the transition from HMINET-2 to a distributed resource sharing system in Hahn-Meitner-Institute for Nuclear Research. The architecture and rationales for the planned new distributed resource system (Y) in HMI are outlined. The introduction of a distributed operating system is a prerequisite for a resource-sharing system. Y will provide not only the integration of networks of different qualities (high speed back-bone, LANs of different technologies, ports to national X.25 network and satellite) at hardware level, but also an integrated global user view of the whole system. This will be designed and implemented by decoupling the user-view from the hardware topology by introducing a netwide distributed operating system. (Auth.)

  1. Farm Hall and the German atomic project of World War II a dramatic history

    CERN Document Server

    Cassidy, David C

    2017-01-01

    This gripping book brings back to life the events surrounding the internment of ten German Nuclear Scientists immediately after World War II. It is also an "eye-witness" account of the dawning of the nuclear age, with the dialogue and narrative spanning the period before, during and after atomic bombs were dropped on Japan at the end of the war. This pivotal historical episode is conveyed, along with the emotions as well as the facts, through drama, historical narrative, and photographs of the captive German nuclear scientists - who included Werner Heisenberg, Otto Hahn, and Max von Laue. The unique story that unfolds in the play is based on secretly recorded transcripts of the scientists’ actual conversations at Farm Hall, together with related documents and photographs.

  2. Lipid Membrane Encapsulation of a 3D DNA Nano Octahedron.

    Science.gov (United States)

    Perrault, Steven D; Shih, William M

    2017-01-01

    Structural DNA nanotechnology methods such as DNA origami allow for the synthesis of highly precise nanometer-scale materials (Rothemund, Nature 440:297-302, 2006; Douglas et al., Nature 459:414-418, 2009). These offer compelling advantages for biomedical applications. Such materials can suffer from structural instability in biological environments due to denaturation and nuclease digestion (Hahn et al., ACS Nano 2014; Perrault and Shih, ACS Nano 8:5132-5140, 2014). Encapsulation of DNA nanostructures in a lipid membrane compartmentalizes them from their environment and prevents denaturation and nuclease digestion (Perrault and Shih, ACS Nano 8:5132-5140, 2014). Here, we describe the encapsulation of a 50 nm DNA nanostructure having the geometry of a wireframe octahedron in a phospholipid membrane containing poly-(ethylene glycol), resulting in biocompatible DNA nanostructures.

  3. Atomic energy as an humane endeavor: Retrospective on its development

    International Nuclear Information System (INIS)

    Seaborg, G.T.; Stahlkopf, K.E.

    1989-01-01

    This report is a speech delivered in Tokyo, Japan, by the author. It covers the historical aspects of atomic energy, from the pre-fission days until present. Such pioneer experiments conducted by O. Hahn, L. Meitner, and F. Strassmann to describe barium isotopes as the result of bombardment of uranium with neutrons are discussed. The author also discussed in detail the pre-war nuclear research at Berkeley, a leading center of nuclear research. Such important events as the synthesis and identification of cobalt-60, iodine-131, and technetium-99m are also discussed. The author discussed the nuclear power as a source of electricity and the perspective on the future of nuclear power. 32 refs., 19 figs., 5 tabs

  4. LA GEOMETRIA NON-ARCHIMEDEA. DALLE PREMESSE AGLI INFINITI MODELLI ATTUALI

    Directory of Open Access Journals (Sweden)

    R. Mascella

    2006-02-01

    Full Text Available La geometria non-archimedea sembra essere un’ipotesi astratta e fantasiosa, accettabile nella matematica ma non per la rappresentazione spaziale, perché usa concetti a lungo esplorati nel pensiero scientifico e filosofico e spesso rigettati, quali l’infinito e l’infinitesimo attuali. L’articolo analizza gli aspetti storici, epistemologici, filosofici e matematici legati a questa geometria ed alle sue radici, considerando l’impostazione dell’inventore Giuseppe Veronese, della formalizzazione analitica di Levi-Civita e di altri matematici e filosofici che sul tema hanno fornito risultati e dibattuto, quali Cantor, Hilbert e Hahn, per terminare con gli infiniti modelli che oggi conosciamo. Questa geometria appare sottovalutata, ma si presta ad un ruolo non meno importante di alcune alternative non-euclidee, spesso semplicisticamente considerate come uniche varianti astratte dei modelli euclideo e riemanniano.

  5. GKSS annual report 1980

    International Nuclear Information System (INIS)

    1981-01-01

    This annual report of the GKSS-Research Centre Geesthacht GmbH contains a survey of the research- and development work done in the year of the report and a survey on the organisation and situation of the society. The R and D programme can be divided in two parts: utilization of nuclear energy; utilization of the sea and the coasts. The first part concerns tasks on the sector of reactor safety compiled to a project which is fully integrated into the programme Reactor Safety of the Federal Ministy for Research and Technology. Development of nuclear-energy propelled vessels is continued to a smaller extent than before. The NS OTTO HAHN stopped operations in 1979. In 1980 a waste-disposed concept for the nuclear waste was developed, on the basis of which the GKSS received permission to put the ship out of service. (orig./RW) [de

  6. JSS project phase 4: Experimental and modelling studies of HLW glass dissolution in repository environments

    International Nuclear Information System (INIS)

    1987-10-01

    A goal of the JSS project was to develop a scientific basis for understanding the effects of waste package components, groundwater chemistry, and other repository conditions on glass dissolution behaviour, and to develop and refine a model for the processes governing glass dissolution. The fourth phase of the project, which was performed by the Hahn-Meitner-Institut, Berlin, FRG, dealt specifically with model development and application. Phase 4 also adressed whether basaltic glasses could serve as natural analogues for nuclear waste glasses, thus providing a means to test the capability of the model for long-term predictions. Additional experiments were performed in order to complete the data base necessary to model interactions between the glass and bentonite and between glass and steel corrosion products. More data on temperature, S/V, and pH dependence of the glass/water reaction were also collected. In this report, the data acquired during phase 4 are presented and discussed. (orig./DG)

  7. Civilian nuclear ships

    International Nuclear Information System (INIS)

    Oelgaard, P.L.

    1993-03-01

    This report contains a review of the information available on nuclear powered ships, built for civilian purposes. In the introduction a short discussion is given of the reasons for the limited use of nuclear ships for these purposes. In the second section a brief review is presented of data for the three experimental/merchant ships build by the United States, Germany and Japan, i.e. NS Savannah, NS Otto Hahn and NS Mutsu. In the third section the Soviet/Russian icebreaker NS Lenin is considered. Its design, operational experience and the introduction of a new nuclear propulsion plant is reviewed. In the fourth section the newer Soviet/Russian icebreakers with nuclear propulsion are considered. Finally design of the Soviet/Russian icebreaker transport/container ship NS Sevmorput is reviewed in the fifth section. The future Russian plans for nuclear vessels for the arctic waters are briefly discussed. (au)

  8. Arbeitsgruppe 'Hochbeanspruchte metallische Werkstoffe' (Strahlenschaeden in Festkoerpern). Progress report No. 3. 1985-1988

    International Nuclear Information System (INIS)

    1988-10-01

    The present report comprises work performed during the third quadrennial period since the R and D program 'Radiation Damage in Solids' was established at the Hahn-Meitner-Institut, Berlin. When the new activities on high temperature properties of superalloys became a significant part of the work the title of the program was changed in 1986 to 'Highly Stressed Metallic Materials'. This report deals with the following main topics: 1) Microstructural evaluation under irradiation (4 papers); 2) Thermal and radiation-enhanced diffusion (6 papers); 3) Diffusion-controlled alloy decomposition (9 papers); 4) Phase stability under irradiation (9 papers); 5) Deformation and fracture of nickel base super alloys at high temperature (3 papers); 6) Defect reactions and kinetics (4 papers); 7) Ion solid interactions (3 papers); 8) New experimental facilities (3 papers, e.g. neutron diffractometer). The papers are written in summary form. (orig./MM)

  9. Chain reaction. History of the atomic bomb; Kettenreaktion. Die Geschichte der Atombombe

    Energy Technology Data Exchange (ETDEWEB)

    Mania, Hubert

    2010-07-01

    Henri becquerel tracked down in 1896 a strange radiation, which was called radioactivity by Marie Curie. In the following centuries German scientists Max Planck, Albert Einstein and Werner Heisenberg presented fundamental contributions to understand processes in the atomic nucleus. At Goettingen, center of the international nuclear physics community, the American student J. Robert Oppenheimer admit to this physical research. In the beginning of 1939 the message of Otto Hahns' nuclear fission electrified researchers. The first step, unleashing atomic energy, was done. A half year later the Second World War begun. And suddenly being friend with and busily communicating physicians were devided into hostile power blocs as bearers of official secrets. The author tells in this exciting book the story of the first atomic bomb as a chain reaction of ideas, discoveries and visions, of friendships, jealousy and intrigues of scientists, adventurers and genius. (orig./GL)

  10. Farm Hall: The Play

    Science.gov (United States)

    Cassidy, David C.

    2013-03-01

    It's July 1945. Germany is in defeat and the atomic bombs are on their way to Japan. Under the direction of Samuel Goudsmit, the Allies are holding some of the top German nuclear scientists-among them Heisenberg, Hahn, and Gerlach-captive in Farm Hall, an English country manor near Cambridge, England. As secret microphones record their conversations, the scientists are unaware of why they are being held or for how long. Thinking themselves far ahead of the Allies, how will they react to the news of the atomic bombs? How will these famous scientists explain to themselves and to the world their failure to achieve even a chain reaction? How will they come to terms with the horror of the Third Reich, their work for such a regime, and their behavior during that period? This one-act play is based upon the transcripts of their conversations as well as the author's historical work on the subject.

  11. Efficiency-wage competition and nonlinear dynamics

    Science.gov (United States)

    Guerrazzi, Marco; Sodini, Mauro

    2018-05-01

    In this paper we develop a nonlinear version of the efficiency-wage competition model pioneered by Hahn (1987) [27]. Under the assumption that the strategic relationship among optimal wage bids put forward by competing firms is non-monotonic, we show that market wage offers can actually display persistent fluctuations described by a piece-wise non-invertible map. Thereafter, assuming that employers are never constrained in the labour market, we give evidence that in the parameter region of chaotic dynamics, the model is able to reproduce the business cycle regularity according to which in the short-run average wages fluctuate less than aggregate employment. In addition, we show that the efficiency-wage competition among firms leads to some inefficiencies in the wage setting process.

  12. Multi-stage-flash desalination plants of relative small performance with integrated pressurized water reactors as a nuclear heat source

    International Nuclear Information System (INIS)

    Petersen, G.; Peltzer, M.

    1977-01-01

    In the Krupp-GKSS joint study MINIPLEX the requirements for seawater-desalination plants with a performance in the range of 10 000 to 80 000 m 3 distillate per day heated by a nuclear reactor are investigated. The reactor concept is similar to the Integrated Pressurized Water Reactor (IPWR) of the nuclear ship OTTO HAHN. The design study shows that IPWR systems have specific advantages up to 200 MWth compared to other reactor types at least being adapted for single- and dual-purpose desalination plants. The calculated costs of the desalinated water show that due to fuel cost advantages of reactors small and medium nuclear desalination plants are economically competetive with oil-fired plants since the steep rise of oil price in autumn 1973. (author)

  13. The flexibility of SIMPSON and SIMMOL for numerical simulations in solid-and liquid-state NMR spectroscopy

    International Nuclear Information System (INIS)

    Vosegaard, T.; Malmendal, A.; Nielsen, N.C.

    2002-01-01

    Addressing the need for numerical simulations in the design and interpretation of advanced solid- and liquid-state NMR experiments, we present a number of novel features for numerical simulations based on the SIMPSON and SIMMOL open source software packages. Major attention is devoted to the flexibility of these Tcl-interfaced programs for numerical simulation of NMR experiments being complicated by demands for efficient powder averaging, large spin systems, and multiple-pulse rf irradiation. These features are exemplified by fast simulation of second-order quadrupolar powder patterns using crystallite interpolation, analysis of rotary resonance triple-quantum excitation for quadrupolar nuclei, iterative fitting of MQ-MAS spectra by combination of SIMIPSON and MINUIT, simulation of multiple-dimensional PISEMA-type correlation experiments for macroscopically oriented membrane proteins, simulation of Hartman-Hahn polarization transfers in liquid-state NMR, and visualization of the spin evolution under complex composite broad-band excitation pulses. (author)

  14. The new 'BerSANS-PC' software for reduction and treatment of small angle neutron scattering data

    International Nuclear Information System (INIS)

    Keiderling, U.

    2002-01-01

    Measurements on small angle neutron scattering (SANS) instruments are typically characterized by a large number of samples, short measurement times for the individual samples, and a frequent change of visiting scientist groups. Besides this, recent advances in instrumentation have led to more frequent measurements of kinetic sequences and a growing interest in analyzing two-dimensional scattering data, these requiring special software tools that enable the users to extract physically relevant information from the scattering data with a minimum of effort. The new 'BerSANS-PC' data-processing software has been developed at the Hahn-Meitner-Institut (HMI) in Berlin, Germany, to meet these requirements and to support an efficiently working guest-user service. Comprising some basic functions of the 'BerSANS' program available at the HMI and other institutes in the past, BerSANS-PC is a completely new development for network-independent use on local PCs with a full-feature graphical interface. (orig.)

  15. Chain reaction. History of the atomic bomb

    International Nuclear Information System (INIS)

    Mania, Hubert

    2010-01-01

    Henri becquerel tracked down in 1896 a strange radiation, which was called radioactivity by Marie Curie. In the following centuries German scientists Max Planck, Albert Einstein and Werner Heisenberg presented fundamental contributions to understand processes in the atomic nucleus. At Goettingen, center of the international nuclear physics community, the American student J. Robert Oppenheimer admit to this physical research. In the beginning of 1939 the message of Otto Hahns' nuclear fission electrified researchers. The first step, unleashing atomic energy, was done. A half year later the Second World War begun. And suddenly being friend with and busily communicating physicians were devided into hostile power blocs as bearers of official secrets. The author tells in this exciting book the story of the first atomic bomb as a chain reaction of ideas, discoveries and visions, of friendships, jealousy and intrigues of scientists, adventurers and genius. (orig./GL)

  16. Eléments de mathématique espaces vectoriels topologiques

    CERN Document Server

    Bourbaki, Nicolas

    2007-01-01

    Les éléments de mathématique de Nicolas Bourbaki ont pour objet une présentation rigoureuse, systématique et sans prérequis des mathématiques depuis leurs fondements. Ce livre est le cinquième du traité ; il est consacré aux bases de l'analyse fonctionnelle. Il contient en particulier le théorème de Hahn-Banach et le théorème de Banach-Steinhaus. Il comprend les chapitres: -1. Espaces vectoriels topologiques sur un corps value; -2. Ensembles convexes et espaces localement convexes; -3. Espaces d'applications linéaires continues; -4. La dualité dans les espaces vectoriels topologiques; -5. Espaces hilbertiens (théorie élémentaire). Il contient également des notes historiques. Ce volume a été publié en 1981.

  17. Rate of hydrogen motion in Ni-substituted LaNi5Hx from NMR

    International Nuclear Information System (INIS)

    Mendenhall, Michael P.; Bowman, Robert C.; Ivancic, Timothy M.; Conradi, Mark S.

    2007-01-01

    Partial substitution of Sn, Ge, or Si for Ni in LaNi 5 H x greatly enhances the stability under repeated hydrogen-cycling. Proton NMR relaxation measurements are reported here to determine the rates of H hopping in the substituted metals LaNi 4.6 M 0.4 H x with M = Sn, Ge, and Si, for comparison to bare LaNi 5 H x . The relaxation times T 2 * (FID), T 2 (Hahn echo), T 2 -CPMG, T 1 , and T 1ρ were determined from 130 to 375 K. The three substituents result in only small increases in the average rate of motion at a given temperature but with a broader distribution of rates over the many inequivalent H sites and hopping paths. Evidently, the average energy barriers along the paths for H motion are only little affected by these substituents. Changes of H content x produce only minor changes in the relaxation times

  18. NMR Phase Noise in Bitter Magnets

    Science.gov (United States)

    Sigmund, E. E.; Calder, E. S.; Thomas, G. W.; Mitrović, V. F.; Bachman, H. N.; Halperin, W. P.; Kuhns, P. L.; Reyes, A. P.

    2001-02-01

    We have studied the temporal instability of a high field resistive Bitter magnet through nuclear magnetic resonance (NMR). This instability leads to transverse spin decoherence in repeated and accumulated NMR experiments as is normally performed during signal averaging. We demonstrate this effect via Hahn echo and Carr-Purcell-Meiboom-Gill (CPMG) transverse relaxation experiments in a 23-T resistive magnet. Quantitative analysis was found to be consistent with separate measurements of the magnetic field frequency fluctuation spectrum, as well as with independent NMR experiments performed in a magnetic field with a controlled instability. Finally, the CPMG sequence with short pulse delays is shown to be successful in recovering the intrinsic spin-spin relaxation even in the presence of magnetic field temporal instability.

  19. Gas chromatographic measurement in water-steam circuits

    International Nuclear Information System (INIS)

    Zschetke, J.; Nieder, R.

    1984-01-01

    A gas chromatographic technique for measurements in water-steam circuits, which has been well known for many years, has been improved by design modifications. A new type of equipment developed for special measuring tasks on nuclear engineering plant also has a general application. To date measurements have been carried out on the ''Otto Hahn'' nuclear powered ship, on the KNK and AVR experimental nuclear power plants at Karlsruhe and Juelich respectively and on experimental boiler circuits. The measurements at the power plants were carried out under different operating conditions. In addition measurements during the alkali operating mode and during combined cycle operation were carried out on the AVR reactor. It has been possible to draw new conclusion from the many measurements undertaken. (orig.) [de

  20. Efficient algorithms for construction of recurrence relations for the expansion and connection coefficients in series of Al-Salam-Carlitz I polynomials

    International Nuclear Information System (INIS)

    Doha, E H; Ahmed, H M

    2005-01-01

    Two formulae expressing explicitly the derivatives and moments of Al-Salam-Carlitz I polynomials of any degree and for any order in terms of Al-Salam-Carlitz I themselves are proved. Two other formulae for the expansion coefficients of general-order derivatives D p q f(x), and for the moments x l D p q f(x), of an arbitrary function f(x) in terms of its original expansion coefficients are also obtained. Application of these formulae for solving q-difference equations with varying coefficients, by reducing them to recurrence relations in the expansion coefficients of the solution, is explained. An algebraic symbolic approach (using Mathematica) in order to build and solve recursively for the connection coefficients between Al-Salam-Carlitz I polynomials and any system of basic hypergeometric orthogonal polynomials, belonging to the q-Hahn class, is described

  1. Applications of functional analysis to optimal control problems

    International Nuclear Information System (INIS)

    Mizukami, K.

    1976-01-01

    Some basic concepts in functional analysis, a general norm, the Hoelder inequality, functionals and the Hahn-Banach theorem are described; a mathematical formulation of two optimal control problems is introduced by the method of functional analysis. The problem of time-optimal control systems with both norm constraints on control inputs and on state variables at discrete intermediate times is formulated as an L-problem in the theory of moments. The simplex method is used for solving a non-linear minimizing problem inherent in the functional analysis solution to this problem. Numerical results are presented for a train operation. The second problem is that of optimal control of discrete linear systems with quadratic cost functionals. The problem is concerned with the case of unconstrained control and fixed endpoints. This problem is formulated in terms of norms of functionals on suitable Banach spaces. (author)

  2. 60 years controlled nuclear fission: CP-1

    International Nuclear Information System (INIS)

    Anon.

    2002-01-01

    On December 2, 1942, the Chicago Pile 1 (CP-1) went critical for the first time. In this way, the scientists and engineers involved in the project under the leadership of Enrico Fermi succeeded in demonstrating that a self-sustaining nuclear reaction with nuclear fission processes was technically feasible. Only four years after the discovery and proof of nuclear fission by Otto Hahn, Fritz Strassmann, and Lise Meitner, the experiment consisting of graphite blocks as the moderator and uranium dioxide pellets as the fuel, as well as instrumentation and control devices, had been set up in the former squash court of the field and track stadium of the University of Chicago. Precisely at 3.36 a.m. Chicago time, after control rods had been withdrawn, the instruments showed the chain reaction by the neutron flux they indicated. An important cornerstone in the use of nuclear power had thus been laid. (orig.)

  3. Unrealistic comparative optimism: An unsuccessful search for evidence of a genuinely motivational bias.

    Science.gov (United States)

    Harris, Adam J L; de Molière, Laura; Soh, Melinda; Hahn, Ulrike

    2017-01-01

    One of the most accepted findings across psychology is that people are unrealistically optimistic in their judgments of comparative risk concerning future life events-they judge negative events as less likely to happen to themselves than to the average person. Harris and Hahn (2011), however, demonstrated how unbiased (non-optimistic) responses can result in data patterns commonly interpreted as indicative of optimism due to statistical artifacts. In the current paper, we report the results of 5 studies that control for these statistical confounds and observe no evidence for residual unrealistic optimism, even observing a 'severity effect' whereby severe outcomes were overestimated relative to neutral ones (Studies 3 & 4). We conclude that there is no evidence supporting an optimism interpretation of previous results using the prevalent comparison method.

  4. Transition operators in electromagnetic-wave diffraction theory. II - Applications to optics

    Science.gov (United States)

    Hahne, G. E.

    1993-01-01

    The theory developed by Hahne (1992) for the diffraction of time-harmonic electromagnetic waves from fixed obstacles is briefly summarized and extended. Applications of the theory are considered which comprise, first, a spherical harmonic expansion of the so-called radiation impedance operator in the theory, for a spherical surface, and second, a reconsideration of familiar short-wavelength approximation from the new standpoint, including a derivation of the so-called physical optics method on the basis of quasi-planar approximation to the radiation impedance operator, augmented by the method of stationary phase. The latter includes a rederivation of the geometrical optics approximation for the complete Green's function for the electromagnetic field in the presence of a smooth- and a convex-surfaced perfectly electrically conductive obstacle.

  5. Correlated charge changing ion-atom collisions

    International Nuclear Information System (INIS)

    Bernstein, E.M.; Tanis, J.A.

    1990-02-01

    This report summarizes the progress and accomplishments in accelerator atomic physics research supported by DOE grant FG02-87ER13778 from August 15, 1987 through February 15, 1990. The general scope of this work involves the experimental investigation of fundamental atomic interactions in collisions of highly charged projectiles with neutral targets, with a particular emphasis on two-electron interactions. Inner-shell processes involving excitation, ionization, and charge transfer are investigated using, for the most part, coincidence techniques in which projectile charge-changing events are associated with x-ray emission, target recoil ions, or electron emission. Measurements were conducted using accelerators at the Lawrence Berkeley Laboratory (LBL), Argonne National Laboratory (ANL), Hahn-Meitner-Institut, Berlin (HMI), and Western Michigan University (WMU). The research described here has resulted in 34 published papers, 14 invited presentations at national and international meetings, and 31 contributed presentations. Brief summaries of work completed and work in progress are discussed in this paper

  6. Precise measurement of coupling strength and high temperature quantum effect in a nonlinearly coupled qubit-oscillator system

    Science.gov (United States)

    Ge, Li; Zhao, Nan

    2018-04-01

    We study the coherence dynamics of a qubit coupled to a harmonic oscillator with both linear and quadratic interactions. As long as the linear coupling strength is much smaller than the oscillator frequency, the long time behavior of the coherence is dominated by the quadratic coupling strength g 2. The coherence decays and revives at a period , with the width of coherence peak decreasing as the temperature increases, hence providing a way to measure g 2 precisely without cooling. Unlike the case of linear coupling, here the coherence dynamics never reduces to the classical limit in which the oscillator is classical. Finally, the validity of linear coupling approximation is discussed and the coherence under Hahn-echo is evaluated.

  7. Ordered cones and approximation

    CERN Document Server

    Keimel, Klaus

    1992-01-01

    This book presents a unified approach to Korovkin-type approximation theorems. It includes classical material on the approximation of real-valuedfunctions as well as recent and new results on set-valued functions and stochastic processes, and on weighted approximation. The results are notonly of qualitative nature, but include quantitative bounds on the order of approximation. The book is addressed to researchers in functional analysis and approximation theory as well as to those that want to applythese methods in other fields. It is largely self- contained, but the readershould have a solid background in abstract functional analysis. The unified approach is based on a new notion of locally convex ordered cones that are not embeddable in vector spaces but allow Hahn-Banach type separation and extension theorems. This concept seems to be of independent interest.

  8. 10th International Conference on Vibration Engineering and Technology of Machinery

    CERN Document Server

    2015-01-01

    The VETOMAC-X Conference covered a holistic plethora of relevant topics in vibration and engineering technology including condition monitoring, machinery and structural dynamics, rotor dynamics,  experimental techniques, finite element model updating, industrial case studies, vibration control and energy harvesting, and signal processing. These proceedings contain not only all of the nearly one-hundred peer-reviewed presentations from authors representing more than twenty countries, but also include six invited lectures from renowned experts: Professor K. Gupta, Mr W. Hahn, Professor A.W. Lees, Professor John Mottershead, Professor J.S. Rao, and Dr P. Russhard. This work is of interest to researchers and practitioners alike, and is an essential book for most of libraries of higher academic institutes.

  9. Phenomenological model for particle production from the collisions of nucleons and pions with fissile elements at medium energies

    International Nuclear Information System (INIS)

    Alsmiller, F.S.; Alsmiller, R.G. Jr.; Gabriel, T.A.; Lillie, R.A.; Barish, J.

    1981-03-01

    A fission channel has been added to the intranuclear-cascade-evaporation model of nuclear reactions so that this model may be used to obtain the differential particle production data that are needed to study the transport of medium-energy nucleons and pions through fissionable material. The earlier work of Hahn and Bertini on the incorporation of fission-evaporation competition into the intranuclear-cascade-evaporation model has been retained, and the statistical model of fission has been utilized to predict particle production from the fission process. Approximate empirically derived kinetic energies and deformation energies are used in the statistical model. The calculated number of emitted neutrons and residual nuclei distributions are in reasonable agreement with experimental data, but the number of emitted neutrons at the higher incident nucleon energies (approx. > 500 MeV) are sensitive to the level density parameter used. 9 figures, 2 tables

  10. Nuclear fission discovered fifty years ago

    International Nuclear Information System (INIS)

    Weis, M.

    1988-01-01

    Fifty years ago, Otto Hahn, Lise Meitner and Fritz Strassmann discovered the process of nuclear fission which, more than other scientific discoveries to date, profoundly has changed the world and continues to influence our life significantly: This discovery made the up to then incontestable physicists' view of the atom as an inseparable whole suddenly shatter to pieces. It has brought about the invaluable advantages of a peaceful utilization of nuclear energy, and at the same time put scientists in the position to build the most terrible weapon ever, threatening mankind and earth with complete destruction. All this certainly is reason enough to recall the scientists, their work and the spirit of the time. (orig.) [de

  11. Nuclear fission - the unexpected discovery seventy years ago

    International Nuclear Information System (INIS)

    Weis, Michael

    2008-01-01

    Seventy years ago, on December 17, 1938, Otto Hahn, Lise Meitner, and Fritz Strassmann discovered nuclear fission. It was a serendipitous discovery resulting from the consistent pursuit, for many years, of occasionally unexpected radiochemical experimental findings. Hardly any other scientific discovery has had such direct bearing on our life, changing our view of the world. It over-threw the tenet of physics, believed to be incontestable, that the atom was indivisible. The use of nuclear power it has made possible has given rise to immense benefits, but it has also allowed mankind's most dreadful weapon so far to be developed. All this is ample reason seventy years later to recall the discovery, the discoverers and their times. It will also be shown what later generations have made of this discovery, and what economic and ecological prospects it continues to hold. (orig.)

  12. The borosilicate glass for 'PAMELA'

    International Nuclear Information System (INIS)

    Schiewer, E.

    1986-01-01

    The low enriched waste concentrate (LEWC) stored at Mol, Belgium, will be solidified in the vitrification plant 'PAMELA'. An alkali-borosilicate glass was developed by the Hahn-Meitner-Institut, Berlin, which dissolves (11 +- 3)wt% waste oxides while providing sufficient flexibility for changes in the process parameters. The development of the glass labelled SM513LW11 is described. Important properties of the glass melt (viscosity, resistivity, formation of yellow phase) and of the glass (corrosion in aqueous solutions, crystallization) are reported. The corrosion data of this glass are similar to those of other HLW-glasses. Less than five wt% of crystalline material are produced upon cooling of large glass blocks. Crystallization does not affect the chemical durability. (Auth.)

  13. Development of small and medium reactors for power and heat production

    International Nuclear Information System (INIS)

    Becka, J.

    1978-01-01

    Data are given on the current state of development of small and medium-power reactors designed mainly for electric power production in small power grids, for heat production for small- and medium-power desalination plants with possible electric power generation, for process steam production and heat development for district heating systems, again combined with electric power generation, and for propelling big and fast passenger ships. A diagram is shown of the primary system of an integrated PWR derived from the Otto Hahn reactor. The family is listed of the standard sizes of the integral INTERATOM company pressurized water reactors. Also listed are the specifications and design of CAS 2CG and AS 3G type reactors used mainly for long-distance heating systems. (J.B.)

  14. Two Universality Properties Associated with the Monkey Model of Zipf's Law

    Science.gov (United States)

    Perline, Richard; Perline, Ron

    2016-03-01

    The distribution of word probabilities in the monkey model of Zipf's law is associated with two universality properties: (1) the power law exponent converges strongly to $-1$ as the alphabet size increases and the letter probabilities are specified as the spacings from a random division of the unit interval for any distribution with a bounded density function on $[0,1]$; and (2), on a logarithmic scale the version of the model with a finite word length cutoff and unequal letter probabilities is approximately normally distributed in the part of the distribution away from the tails. The first property is proved using a remarkably general limit theorem for the logarithm of sample spacings from Shao and Hahn, and the second property follows from Anscombe's central limit theorem for a random number of i.i.d. random variables. The finite word length model leads to a hybrid Zipf-lognormal mixture distribution closely related to work in other areas.

  15. General solution to inhomogeneous dephasing and smooth pulse dynamical decoupling

    Science.gov (United States)

    Zeng, Junkai; Deng, Xiu-Hao; Russo, Antonio; Barnes, Edwin

    2018-03-01

    In order to achieve the high-fidelity quantum control needed for a broad range of quantum information technologies, reducing the effects of noise and system inhomogeneities is an essential task. It is well known that a system can be decoupled from noise or made insensitive to inhomogeneous dephasing dynamically by using carefully designed pulse sequences based on square or delta-function waveforms such as Hahn spin echo or CPMG. However, such ideal pulses are often challenging to implement experimentally with high fidelity. Here, we uncover a new geometrical framework for visualizing all possible driving fields, which enables one to generate an unlimited number of smooth, experimentally feasible pulses that perform dynamical decoupling or dynamically corrected gates to arbitrarily high order. We demonstrate that this scheme can significantly enhance the fidelity of single-qubit operations in the presence of noise and when realistic limitations on pulse rise times and amplitudes are taken into account.

  16. Mathematical foundation of quantum mechanics

    CERN Document Server

    Parthasarathy, K R

    2005-01-01

    This is a brief introduction to the mathematical foundations of quantum mechanics based on lectures given by the author to Ph.D.students at the Delhi Centre of the Indian Statistical Institute in order to initiate active research in the emerging field of quantum probability. The material in the first chapter is included in the author's book "An Introduction to Quantum Stochastic Calculus" published by Birkhauser Verlag in 1992 and the permission of the publishers to reprint it here is acknowledged. Apart from quantum probability, an understanding of the role of group representations in the development of quantum mechanics is always a fascinating theme for mathematicians. The first chapter deals with the definitions of states, observables and automorphisms of a quantum system through Gleason's theorem, Hahn-Hellinger theorem and Wigner's theorem. Mackey's imprimitivity theorem and the theorem of inducing representations of groups in stages are proved directly for projective unitary antiunitary representations ...

  17. The spider collection (Arachnida: Araneae of the Zoological Museum of the Iranian Research Institute of Plant Protection, with new species records for Iran

    Directory of Open Access Journals (Sweden)

    Zamani, Alireza

    2015-11-01

    Full Text Available The spider collection of the Zoological Museum of the Iranian Research Institute of Plant Protection was studied during the summer of 2014. A total of 180 specimens, belonging to 25 families, 60 genera and 77 species were documented. Of these, the following nine species could be recorded from Iran for the first time: Alopecosa schmidti (Hahn, 1835, Anyphaena accentuata (Walckenaer, 1802, Crustulina sticta (O. P.-Cambridge, 1861, Enoplognatha mordax (Thorell, 1875, Ero tuberculata (De Geer, 1778, Salticus zebraneus (C. L. Koch, 1837, Pardosa aenigmatica Tongiorgi, 1966, Pardosa nebulosa (Thorell, 1872 and Tmarus piochardi (Simon, 1866. Morphological and geographical data are provided for the newly recorded species. Two species (P. aenigmatica and T. piochardi are illustrated and a map of localities is given.

  18. The Brussels Nuclear Ship Convention and its impact on the German Atomic Energy Act

    International Nuclear Information System (INIS)

    Bernaerts, A.

    1976-01-01

    Although the Brussels Nuclear Ship Liability Convention of 1962, whose incorporation into German law was agreed upon by the German Federal Parliament (the Bundestag) in 1975, will have only minor international significance once it has entered into force, it will yet provide a new legal basis for the nuclear liability of the German vessel N.S. 'Otto Hahn' for the periods of her stay within the Federal Republic of Germany. However, there is no smooth concurrence of the Brussels Convention and the German Atomic Energy Act adapted to the Paris Liability Convention in 1975. This means that a number of questions still need to be resolved with respect to the protection of victims and the liability of shipowners. (orig.) [de

  19. Entangling distant resonant exchange qubits via circuit quantum electrodynamics

    Science.gov (United States)

    Srinivasa, V.; Taylor, J. M.; Tahan, Charles

    2016-11-01

    We investigate a hybrid quantum system consisting of spatially separated resonant exchange qubits, defined in three-electron semiconductor triple quantum dots, that are coupled via a superconducting transmission line resonator. Drawing on methods from circuit quantum electrodynamics and Hartmann-Hahn double resonance techniques, we analyze three specific approaches for implementing resonator-mediated two-qubit entangling gates in both dispersive and resonant regimes of interaction. We calculate entangling gate fidelities as well as the rate of relaxation via phonons for resonant exchange qubits in silicon triple dots and show that such an implementation is particularly well suited to achieving the strong coupling regime. Our approach combines the favorable coherence properties of encoded spin qubits in silicon with the rapid and robust long-range entanglement provided by circuit QED systems.

  20. Spiders (Araneae of Hůrka u Hranic National Nature Reserve (Moravia, Czech Republic

    Directory of Open Access Journals (Sweden)

    Ondřej Machač

    2015-01-01

    Full Text Available Spiders of Hůrka u Hranic National Nature Reserve were investigated during the year 2011. Several capture methods were used during the vegetation season (from April to November in many various habitats of this territory. Altogether, 92 species from 27 families were recorded, including very rare and remarcable species. Majority of such species prefer thermophilous habitats: Atypus affinis Eichwald, 1830, Dysdera czechica Řezáč, in prep., Theridion melanurum Hahn, 1831, Agroeca cuprea Menge, 1873, Drassyllus villicus (Thorell, 1875, Zodarion germanicum (C. L. Koch, 1837 and Dipoena melanogaster (C. L. Koch, 1837. Some species are also listed in the Red List of threatened species in the Czech Republic: Cheiracanthium elegans Thorell, 1875 in category endangered (EN, Cozyptila blackwalli (Simon, 1875 and Leptorchestes berolinensis (C. L. Koch, 1846 in category vulnerable (VU. Altogether, 144 spider species are now known from the reserve; they represent 16.6% of araneofauna of the Czech Republic.

  1. The NAA system at the reactor BER II clinical analysis of fluorine, calcium, phosphorus and aluminium in bone biopsies, comparison with photon activation analysis and ion sensitive electrode

    International Nuclear Information System (INIS)

    Gawlik, D.; Gatschke, W.; Behne, D.; Braetter, P.

    1981-01-01

    Over the past few years an irradiation and measuring system has been developed for the reactor BER II at the Hahn-Meitner-Institute. It was to be suited in particular to the neutron activation analysis of biological material via short lived radionuclides. The general characteristics of this equipment and some experimental details as the recycling facility and the device used for measuring the irradiation time, the waiting time and the neutron fluency are described. This equipment was used to determine physiological concentrations of the elements sodium, chlorine, aluminium, phosphorus, fluorine, calcium, copper and selenium in biological material. The results have been compared with those obtained by photon activation analysis or ion sensitive electrode. As an example of the application of the apparatus the authors report on the clinical analysis of Ca, F, P and Al in the control of the treatment of patients suffering from osteoporosis. (author)

  2. Workshop on instrumentation of the disassembled BER II

    International Nuclear Information System (INIS)

    Jauch, W.; Steiner, M.

    1982-01-01

    A workshop on the instrumentation of a disassembled BER II-reactor took place in the Hahn-Meitner-Institute in Berlin on April 19 and 20, 1982. Invited were all groups that are promoted by the associations 'Neutron Scattering for Investigation of Condensed Substance' and 'Neutron Scattering and Complementary Methods in Chemistry and Biology', along with experts for neutron spectrometers. 40 foreign scientists from 22 different institutes had accepted the invitation. The actual questions were treated in 13 presentations and a certain number of posters, with the latter also comprising activation analysis. The present report contains the presentations submitted, the final discussion minutes and a summary from HMI-view. (orig./RW) [de

  3. Countercurrents from the West: “blue-eyed” Zen masters, Vipassanā meditation, and Buddhist psychotherapy in contemporary Korea.

    Science.gov (United States)

    Bongseok Joo, Ryan

    2011-01-01

    One surprising and yet relatively unknown aspect of contemporary Korean Buddhism is the significant influence of American and European Buddhism. Between 1989 and 2009, South Koreans witnessed well-educated “blue-eyed” monastic residents via the Korean media, and the emergence of new bestsellers by authors like Thich Nhat Hahn and Jack Kornfield, written initially for Western audiences but since translated into Korean. The new teachings from the West have inspired a sudden growth of interest in vipassanā meditation as an “alternative” to Kanhwa Sŏn practice, and the emergence of a new academic field: Buddhist psychotherapy. This new wave of transnational influence from the West has changed not only the way Koreans practice Buddhism but also how they perceive Buddhist history and their own identities. In addition, the perceived “prestige” of Buddhism in the West has provided a new rhetorical strategy to defend Buddhism against other religions, particularly Korean evangelical Christianity.

  4. CERN in the park

    CERN Multimedia

    2002-01-01

    CERN will be the centre of debate at a 'Café scientifique' on Monday 29 April. The aim of the Cafés scientifiques, which are organised by the association of Bancs Publics, is to kindle discussion between ordinary people and specialists in a scientific field. This Monday, Maurice Bourquin, President of the CERN Council, Hans Hoffmann, Director of Technology Transfer and Scientific Computing at CERN, Gilbert Guignard, a physicist at CERN, and Ruhal Floris, who teaches mathematical didactics at the University of Geneva, will explain the usefulness and contributions to science of the world's biggest laboratory for particle physics. What is CERN for? Monday 29 April at 18.30 Musée d'histoire des sciences, Geneva (in the park Perle du Lac) Entry free Wine and buffet after the discussion

  5. CERN signs draft Memorandum of Understanding with Iran

    CERN Multimedia

    2001-01-01

    Left to right: Dr Henrik Foeth, Team Leader CMS; Dr Daniel Denegri, Physics Coordinator CMS; Prof. Tejinder Virdee, Deputy Spokesman CMS; Prof. Luciano Maiani, CERN Director-General - signing; Mr Jean-Marie Dufour, Head of the CERN Legal Service, Mr Ghodratollah Habibpour Gharakol, back; Dr Abdolali Sharghi, Advisor to the Minister and Director General, Office of International Scientific Cooperation, Iranian Ministry of Science, Research and Technology; Dr Mostafa Moin, Minister of Science, Research and Technology, Islamic Republic of Iran - signing; Dr Reza Mansouri, Director, International Scientific Meetings Office, Iranian Ministry of Science, Research and Technology; H. E. Dr Ali Khorram, Extraordinary and plenipotentiary Ambassador of the Islamic Republic of Iran to the United Nations in Geneva, Dr Hans F. Hoffmann, CERN Director for Technology Transfer & for Scientific Computing. Iranian Minister for Science, Research and Technology, Dr Mostafa Moin, and CERN Director-General Luciano Maiani, s...

  6. Possible resonance effect of axionic dark matter in Josephson junctions.

    Science.gov (United States)

    Beck, Christian

    2013-12-06

    We provide theoretical arguments that dark-matter axions from the galactic halo that pass through Earth may generate a small observable signal in resonant S/N/S Josephson junctions. The corresponding interaction process is based on the uniqueness of the gauge-invariant axion Josephson phase angle modulo 2π and is predicted to produce a small Shapiro steplike feature without externally applied microwave radiation when the Josephson frequency resonates with the axion mass. A resonance signal of so far unknown origin observed by C. Hoffmann et al. [Phys. Rev. B 70, 180503(R) (2004)] is consistent with our theory and can be interpreted in terms of an axion mass m(a)c2=0.11  meV and a local galactic axionic dark-matter density of 0.05  GeV/cm3. We discuss future experimental checks to confirm the dark-matter nature of the observed signal.

  7. IN SUBJECTS ALLERGIC TO GRASS POLLEN, BASOPHIL SENSITIVITY DECREASES DURING SUBCUTANEOUS IMMUNOTHERAPY DUE TO BOTH HUMORAL FACTORS AND CELLULAR DESENSITIZATION

    DEFF Research Database (Denmark)

    Schmid, Johannes Martin; Dahl, Ronald; Hoffmann, Hans Jürgen

    2011-01-01

    Johannes Martin Schmid, Ronald Dahl, and Hans Juergen Hoffmann Department of Respiratory Medicine, Aarhus, Denmark Background: The major effect of SCIT is a change in allergen specific immunoglobulin. We measure the contribution of competing immunoglobulin to the effect of SCIT in patients...... with allergic rhino-conjunctivitis with basophil activation tests (BAT). Methods: We have randomized 24 patients to a treatment (18) and an open control group (6). Repeated BAT were performed at baseline and througout treatment. Heparinized blood was centrifuged, plasma was removed, the cells washed twice...... basophils. The LC50 was calculated as the log of the allergen concentration leading to half maximum basophil activation. Specific IgE and IgG4 was measured using ISAC panel. Results: We found a 15-fold reduction in basophil sensitivity in the treated group during updosing, compared to their baseline...

  8. Reading a suspenseful literary text activates brain areas related to social cognition and predictive inference.

    Directory of Open Access Journals (Sweden)

    Moritz Lehne

    Full Text Available Stories can elicit powerful emotions. A key emotional response to narrative plots (e.g., novels, movies, etc. is suspense. Suspense appears to build on basic aspects of human cognition such as processes of expectation, anticipation, and prediction. However, the neural processes underlying emotional experiences of suspense have not been previously investigated. We acquired functional magnetic resonance imaging (fMRI data while participants read a suspenseful literary text (E.T.A. Hoffmann's "The Sandman" subdivided into short text passages. Individual ratings of experienced suspense obtained after each text passage were found to be related to activation in the medial frontal cortex, bilateral frontal regions (along the inferior frontal sulcus, lateral premotor cortex, as well as posterior temporal and temporo-parietal areas. The results indicate that the emotional experience of suspense depends on brain areas associated with social cognition and predictive inference.

  9. Dr. Mostafa Moin, Minister of Science, Research and Technology, Islamic Republic of Iran

    CERN Multimedia

    Patrice Loïez

    2001-01-01

    L. to. r.:Dr Henrik Foeth, Team Leader, CMS experiment; Dr Daniel Denegri, Physics Coordinator, CMS experiment; Prof. Tejinder Virdee, Deputy Spokesman, CMS experiment; Prof. Luciano Maiani, CERN Director-General (signing); Mr Jean-Marie Dufour, Head of the Legal Service, Mr Ghodratollah Habibpour Gharakol (back); Dr Abdolali Sharghi, Advisor to the Minister and Director General, Office of International Scientific Cooperation, Ministry of Science, Research and Technology; Dr Mostafa Moin, Minister of Science, Research and Technology, Islamic Republic of Iran (signing); Dr Reza Mansouri, Director, International Scientific Meetings Office, Ministry of Science, Research and Technology; H. E. Dr Ali Khorram, Extraordinary and plenipotentiary Ambassador to the United Nations in Geneva and Dr Hans F. Hoffmann, CERN Director for Technology Transfer & for Scientific Computing. _

  10. Mr Erkki Liikanen, European Commissioner for Enterprise and Information Society

    CERN Multimedia

    Maximilien Brice

    2003-01-01

    Photo 01: Visit of Mr Erkki Liikanen, at CMS experiment assembly hall at Point 5, L. to r.: : Mr Mario Campolargo, Head of Unit, Research Infrastructure, DG Information Society; Prof. Dan-Olof Riska, Director, Helsinki Institute of Physics; Prof. Ari-Pekka Hameri, HEC, University of Lausanne, Helsinki Institute of Physics; Mr Wolfgang Boch, Head of Unit, Grids for Complex Problems Solving, DG Information Society; Mr David O. Williams, Relations with the European Commission; Mr Erkki Liikanen, European Commissioner for Enterprise and Information Society; Dr Hans F. Hoffmann, Director for Technology Transfer and for Scientific Computing; Prof. Jorma Tuominiemi, Director of the CMS Programme for the Helsinki Institute of Physics; H.E. Mr Carlo Trojan, Ambassador, Head of the permanent delegation of the European Commission to the international organizations in Geneva; Prof. Erkko Autio, Helsinki University of Technology, Institute of Strategy & International Business. Photo 02: Prof. Dan-Olof Riska, Director,...

  11. Software development agreement between CERN and the Indian Department of Atomic Energy

    CERN Multimedia

    Patrice Loïez

    2003-01-01

    The development and prototyping work for the LHC computing facility is being organised as a project that includes many scientific institutes and industrial partners, coordinated by CERN. The project is nicknamed LCG (after LHC Computing Grid). Addendum No. 1 to the Protocol dated 24/09/02 to the 1991 co-operation agreement between CERN and the Department of Atomic Energy (DAE) of the Government of India defines the collaboration between CERN and DAE on software development for the LCG Prototype Project. Signing the addendum are G. Govindrajan (left), Director of the Electronics and Instrumentation Group at the Bhabha Atomic Research Centre, Mumbai, India and Dr. Hans Hoffmann, CERN Director for Technology Transfer and for Scientific Computing.

  12. Software development agreement between CERN and the Indian Department of Atomic Energy

    CERN Multimedia

    Patrice Loïez

    2003-01-01

    The development and prototyping work for the LHC computing facility is being organised as a project that includes many scientific institutes and industrial partners, coordinated by CERN. The project is nicknamed LCG (after LHC Computing Grid). Addendum No. 1 to the Protocol dated 24/09/02 to the 1991 co-operation agreement between CERN and the Department of Atomic Energy (DAE) of the Government of India defines the collaboration between CERN and DAE on software development for the LCG Prototype Project. Photo 01: Signing the addendum are G. Govindrajan (left), Director of the Electronics and Instrumentation Group at the Bhabha Atomic Research Centre, Mumbai, India and Dr. Hans Hoffmann, CERN Director for Technology Transfer and for Scientific Computing. Looking on are Christoph Eck (far left), resource manager of the LCG Project and Les Robertson, LCG Project Leader. Photo 02: (left to right) Christoph Eck, resource manager of the LCG Project; G. Govindrajan, Director of the Electronics and Instrumentation G...

  13. A literatura e o cinema como novo medium artístico: Hanns Heinz Ewers e O estudante de Praga (1913

    Directory of Open Access Journals (Sweden)

    Michael Korfmann

    2008-11-01

    Full Text Available The Student from Prague  (1913 is considered to be the first  film d’art produced in Germany. The film is based on a script by Ha nns Heinz Ewers, writer and ardent advocate of this new medium. With roots in German romantic ism, particularly in regard to motifs in the works by E.T.A. Hoffmann and Adelbert von Chamisso, The Student from Prague explored the optical possibilities offered by the doppelganger character. This literary framework supports the plot, gives credibility to the movie and contribut es to the acceptance of films as an art medium. It also marks the rise of German cinema on an international level, which reached its peak in the 1920s with the movement known as ‘German expressionism’. 

  14. Correlation of 18F-FDG PET/CT and Endoscopic Findings of Twin Mucosa-Associated Lymphoid Tissue (MALT) Lymphoma of the Stomach: Report of a Case

    International Nuclear Information System (INIS)

    Bahk, Yong Whee; Choi, Jin Wook

    2008-01-01

    Mucosa-associated lymphoid tissue (MALT) type lymphoma arises from extranodal marginal zone B-cell. It is etiologically associated with Helicobacter pylori infection and, hence, can be cured by antibiotic treatment. MALT type lymphoma is the most common variety of gastric lymphoma that is rare in the stomach). The published data of clinical studies on the usefulness of 18F-FDG PET in the diagnosis of MALT type lymphoma varied according to authors. Thus, the result of Hoffmann et al. was discouraging whereas a high diagnostic accuracy was reported by Ambrosini et al. The latter group further went to suggest that higher 18F-FDG uptake in gastric MALT type lymphoma would positively relate to the aggressiveness of neoplasm. The clinical studies conducted by other groups on MALT lymphomas of the stomach, lung, orbit and parotid gland and the stomach, lung, parotid gland, skin, orbit, mandible, esophagus and uterus confirmed that 18F-FDG scan is valuable

  15. Consumer evaluation of imported organic food products in emerging economies in Asia

    DEFF Research Database (Denmark)

    Pedersen, Susanne; Aschemann-Witzel, Jessica; Thøgersen, John

    , product image and consumer purchase intention: Evidence from an emerging economy. International Business Review, 21(6), 1041-1051. doi:http://dx.doi.org/10.1016/j.ibusrev.2011.11.010 Wang, O., De Steur, H., Gellynck, X., & Verbeke, W. (2015). Motives for consumer choice of traditional food and European......-country combinations in every product category (Pappu, Quester, & Cooksey, 2006, 2007). A country-of-origin-effect strong enough to drive purchasing decisions appears when a country’s equity is high and there is a good product-country match (S. A. Ahmed, d'Astous, & Petersen, 2011; Herz & Diamantopoulos, 2013; Roth......, preferences and purchase behaviour (Newman, Turri, Howlett, & Stokes, 2014). A wide range of contingencies and moderators of COO effects has been identified (Pharr, 2005; Verlegh & Steenkamp, 1999) – also for food products (Z. U. Ahmed et al., 2004; Chryssochoidis, Krystallis, & Perreas, 2007; Hoffmann, 2000...

  16. Characterization of grog of bricks; Caracterizacao de chamote de blocos de vedacao

    Energy Technology Data Exchange (ETDEWEB)

    Candido, V.S.; Pinheiro, R.M.; Monteiro, S.N.; Vieira, C.M.F. [Universidade Estadual do Norte Fluminense Darcy Ribeiro (LAMAV/CCT/UENF), Campos dos Goytacazes, RJ (Brazil). Lab. de Materiais Avancados

    2010-07-01

    This work aims to characterize a waste of red ceramic, grog, generated from the milling of defective pieces of bricks fired in a Hoffmann type furnace by a industry from Campos dos Goytacazes-RJ. The grog was tested for X-ray diffraction, X-ray fluorescence, thermogravimetric and differential thermal analysis, dilatometry, sieving and sedimentation by gravity and optical microscopy. The results indicated that the grog is predominantly constituted of quartz, muscovite mica and hematite. The presence of kaolinite indicates that the bricks were fired at low temperatures, below 600 deg C. Finally, the characterization results indicated that the grog presents itself as an alternative non plastic material to be used in mixtures with clays for the production of red ceramics. (author)

  17. Characterization of grog of bricks

    International Nuclear Information System (INIS)

    Candido, V.S.; Pinheiro, R.M.; Monteiro, S.N.; Vieira, C.M.F.

    2010-01-01

    This work aims to characterize a waste of red ceramic, grog, generated from the milling of defective pieces of bricks fired in a Hoffmann type furnace by a industry from Campos dos Goytacazes-RJ. The grog was tested for X-ray diffraction, X-ray fluorescence, thermogravimetric and differential thermal analysis, dilatometry, sieving and sedimentation by gravity and optical microscopy. The results indicated that the grog is predominantly constituted of quartz, muscovite mica and hematite. The presence of kaolinite indicates that the bricks were fired at low temperatures, below 600 deg C. Finally, the characterization results indicated that the grog presents itself as an alternative non plastic material to be used in mixtures with clays for the production of red ceramics. (author)

  18. Physical consequences of the interpretation of the skew part of gμν in Einstein's nonsymmetric unified field theory

    International Nuclear Information System (INIS)

    Voros, J.

    1995-01-01

    The electromagnetic interaction in the Einstein-Infeld-Hoffmann (EIH) equations of motion for charged particles in Einstein's unified field theory (EUFT) is found to be automatically precluded by the conventional identification of the skew part of the fundamental tensor with the Faraday tensor. It is shown that an alternative identification, suggested by observations of Einstein, Bergmann and Papapetrou, would lead to the expected electromagnetic interaction, were it not for the intervention of an infelicitous (radiation) gauge. Therefore, an EIH analysis of EUFT is inconclusive as a test of the physical viability of the theory, and it follows that EUFT cannot be considered necessarily unphysical on the basis of such an analysis. It is concluded that, historically, Einstein's unified field theory was rejected for the wrong reason. 26 refs

  19. JST Thesaurus Headwords and Synonyms: Woodward‐Hoffmann則 [MeCab user dictionary for science technology term[Archive

    Lifescience Database Archive (English)

    Full Text Available MeCab user dictionary for science technology term Woodward‐Hoffmann則 名詞 一般 * * * * ...Woodward‐Hoffmann則 Woodward‐Hoffmannソク ダブリューオーオーディーダブリューエイアールディー‐エイチオーエフエフエムエイエヌエヌソク Thesaurus2015 200906012584096939 C CA22 UNKNOWN_2 Woodward ‐ Hoffmann

  20. Reflections on evaluative practice in higher education: an experience collaborative

    Directory of Open Access Journals (Sweden)

    Suênya Marley Mourão Batista

    2016-12-01

    Full Text Available This article aims to reflect on the evaluation practice of higher education teachers generated from research conducted as part of a private higher education institution. The objective of this study is to characterize the assessment practices of teachers who work in higher education and collaborate in order to facilitate the expansion of dynamic assessment practices were used as theoretical and methodological support the studies of Vygotsky (2007, Liberali (2008, Ibiapina (2007, 2008, Meier (2007, Campione (2002 and Hoffmann (2011. Field research was conducted in a qualitative approach to collaborative type with 3 (three in higher education using the reflective interview as data collection tool to promote critical thinking about assessment practices to develop. The results showed the prevalence of use of traditional assessment practices by teachers and the possibility of performing dynamic assessment practices from the understanding of these nurtured by the research and training process.

  1. Die Stadt. Passagen zwischen Literatur und Architektur

    Directory of Open Access Journals (Sweden)

    Wolfgang Bongers

    2003-12-01

    Full Text Available O artigo pretende contribuir para uma arqueologia literária da cidade. Autores como Hoffmann, Poe e Baudelaire reagiram desde o começo da modernidade com novas perspectivas às ondas de modernização e construiram modelos de observação da metrópole européia, capazes de estabelecer novos discursos. Eles encontram sua continuação e transformação nas literaturas latinoamericana (Borges, cortázar, Marechal, Piglia e europeia (Aragon, Benjamin, Borchert, Brecht, Calvino, Döblin. Os textos apresentam, todavia, cidades imperceptíveis e invisíveis, que indicam as mudanças das arquiteturas urbanas.

  2. Cerambycidae (Coleoptera from Lagoa do Tamburí farm, Aracatu – Bahia, with new records

    Directory of Open Access Journals (Sweden)

    ANDRÉ DA SILVA FERREIRA

    2015-01-01

    Full Text Available ABSTRACTSpecies of Cerambycidae were inventoried in an area of Caatinga (dryland vegetation in the municipality of Aracatu, Bahia State, Brazil, between August/2012 and July/2013. The insects were collected using light traps, active searches, and white cloth trapping. A total of 716 specimens of Cerambycidae were collected; 665 of them were identified as belonging to 107 species, 84 genera, 30 tribes, and 3 subfamilies. The speciesPhaedinus carbonelli Monné, 1999,Lepturges (Lepturges fasciculatoides Gilmour, 1962,Hoplistonychus bondari Melzer, 1930,Ataxia arenaria Martins & Galileo, 2013 were new records for Bahia;Nesozineus obscurus Hoffmann, 1984 is new record for Brazil. The subfamily Cerambycinae demonstrated the greatest richness, with 56 species. These results contribute to our knowledge of the Cerambycidae fauna of Brazil.

  3. 188Re labeled MPEG-modified superparamagnetic nanogels: preparation and preliminary application in mice

    International Nuclear Information System (INIS)

    Sun Hanwen; Gong Peijun; Liu Xiuqing; Hong Jun; Xu Dongmei; Zhang Chunfu; Wang Yongxian; Yao Side

    2005-01-01

    Superparamagnetic poly(acrylamide) magnetic nanogels produced via photochemical method have been developed. After Hoffmann degradation of carbonyl, the nanogels with amino groups, or poly(acrylamide-vinyl amine) magnetic nanogels, were also obtained. And the magnetic nanogels were further modified by methoxy poly(ethylene glycol) (MPEG) for higher dispersibility and stability. The MPEG-modified magnetic nanogels were characterized by X-ray diffraction (XRD), photo correlation spectroscopy (PCS) and scanning electron microscopy (SEM), respectively. The MPEG-modified magnetic nanogels were labeled by 188 Re radiopharmaceuticals and intravenously injected into tails of mice in the presence and absence of a 0.5 T external magnetic field targeted on the bellies. The radioactivity distribution was monitored in vivo. In the absence of magnetic field, the radioactivity was mainly distributed in liver, spleen, kidney, stomach and lung. In the presence of the magnetic field, the radioactivity was mainly accumulated on the targeted point, verifying the magnetically targeted character. (authors)

  4. Česká literární moderna v časopise Aus fremden Zungen — čtyři příklady prostředkování // Czech literary modernism in the journal Aus fremden Zungen — four examples of mediation

    Directory of Open Access Journals (Sweden)

    Lucie Merhautová

    2015-12-01

    Full Text Available The study focuses on Bronislav Wellek, Adolph Donath, Camill Hoffmann, Oskar Wiener and Otto Hauser and their translations and articles on modern Czech literature published in the German journal Aus fremden Zungen (1891–1910. This fortnightly established by Joseph Kürschner dealt exclusively with foreign literature. Its openness to all kinds of literary currents and little-known minor literatures was unique within the system of German literary journals. A comparison indicates the key role played by mediators. The primary requirement for their activity was multilingualism, and it turns out that in the case of all the figures under consideration, language did not necessarily have the nationally symbolic significance ascribed by politics, and their identity basically did not depend on their use of one language or another. The progress and success of this mediation was not just decided by the literary standard of the translation, but all five translators were concerned to improve the standard of translation, as well as to change the approach to translation in general. The choice of text and its succeeded publication was determined by the involvement of the mediators in the Czech and German literary context. Hence Bronislav Wellek focused primarily on translations and interpretations of poetry by Jaroslav Vrchlický and J. S. Machar, whom he knew personally and who also introduced him to their own literary and intellectual circles. It was thanks to Vrchlický that he printed his translations in Eduard Albert’s anthologies Poesie aus Böhmen (1893–1895. Machar was responsible for other translations, e.g. Hilbert’s drama Vina, which Hermann Bahr was to help promote in the German-language sphere. Between 1896 and 1898, Adolph Donath attempted to build up his position as mediator between the Moderní revue circle and some representatives of Viennese modernism (e.g. Karl Kraus, Peter Altenberg and Felix Rappaport. For Aus fremden Zungen he

  5. An International Collaborative Study of Outcome and Prognostic Factors in Patients with Secondary CNS Involvement By Diffuse Large B-Cell Lymphoma

    DEFF Research Database (Denmark)

    El-Galaly, Tarec Christoffer; Cheah, Chan Yoon; Bendtsen, Mette Dahl

    2016-01-01

    that develop SCNS following primary therapy that contains a rituximab-based-regimen as well as the impact of more intensified treatment for SCNS are limited.Aims: The aims of this study were to i) describe the natural history of SCNS in a large cohort of patients treated with immunochemotherapy, and ii......' Hospital, London). Clinico-pathologic and treatment characteristics at the time of SCNS were collected from medical records.Results: In total, 281 patients with SCNS diagnosed between 2001 and 2016 were included. Median age at SCNS was 64 (range 20-93) years and male:female ratio was 1.3. SCNS occurred...... Myers Squib: Research Funding; NanoString Technologies: Research Funding; F Hoffmann-La Roche: Research Funding; Millennium Takeda: Research Funding; Seattle Genetics: Research Funding. Sehn: roche/genentech: Consultancy, Honoraria; amgen: Consultancy, Honoraria; seattle genetics: Consultancy, Honoraria...

  6. Case of asymmetrical arthrogryposis. A clinical study and a preliminary report on the value of CT-scanning

    Energy Technology Data Exchange (ETDEWEB)

    Hageman, G.; Vette, J.K.; Willemse, J. (University Hospital, Utrecht (Netherlands))

    1983-01-01

    Following the introduction of the conception that arthrogryposis is a symptom and not a clinical entity, a case of the very rare asymmetric form of neurogenic arthrogryposis is presented. The asymmetry of congenital contractures and weakness is associated with hemihypotrophy. The value of muscular CT-scanning prior to muscle biopsy is demonstrated. Muscular CT-scanning shows the extension of adipose tissue, which has replaced damaged muscles and therby indicates the exact site for muscle biopsy. Since orthopaedic treatment in arthrogryposis can be unrewarding due to severe muscular degeneration, preoperative scanning may provide additional important information on muscular function and thus be of benefit for surgery. The advantage of muscular CT-scanning in other forms of arthrogryposis requires further determination. The differential diagnosis with Werdnig-Hoffmann disease is discussed.

  7. Correlation of {sup 18}F-FDG PET/CT and Endoscopic Findings of Twin Mucosa-Associated Lymphoid Tissue (MALT) Lymphoma of the Stomach: Report of a Case

    Energy Technology Data Exchange (ETDEWEB)

    Bahk, Yong Whee; Choi, Jin Wook [SungAe Hospital, Seoul (Korea, Republic of)

    2008-02-15

    Mucosa-associated lymphoid tissue (MALT) type lymphoma arises from extranodal marginal zone B-cell. It is etiologically associated with Helicobacter pylori infection and, hence, can be cured by antibiotic treatment. MALT type lymphoma is the most common variety of gastric lymphoma that is rare in the stomach). The published data of clinical studies on the usefulness of 18F-FDG PET in the diagnosis of MALT type lymphoma varied according to authors. Thus, the result of Hoffmann et al. was discouraging whereas a high diagnostic accuracy was reported by Ambrosini et al. The latter group further went to suggest that higher 18F-FDG uptake in gastric MALT type lymphoma would positively relate to the aggressiveness of neoplasm. The clinical studies conducted by other groups on MALT lymphomas of the stomach, lung, orbit and parotid gland and the stomach, lung, parotid gland, skin, orbit, mandible, esophagus and uterus confirmed that 18F-FDG scan is valuable.

  8. Effect of Protein Hydrolysates on Pancreatic Cancer Cells

    DEFF Research Database (Denmark)

    Ossum, Carlo G.; Andersen, Lisa Lystbæk; Nielsen, Henrik Hauch

    Effect of Fish Protein Hydrolysates on Pancreatic Cancer Cells Carlo G. Ossum1, Lisa Lystbæk Andersen2, Henrik Hauch Nielsen2, Else K. Hoffmann1, and Flemming Jessen2 1University of Copenhagen, Department of Biology, Denmark, 2Technical University of Denmark (DTU), National Food Institute, Denmark...... hydrolysates obtained by enzymatic hydrolysis on cancer cell proliferation. Skin and belly flap muscle from trout were hydrolysed with the unspecific proteases Alcalase, Neutrase, or UE1 (all from Novozymes, Bagsværd, Denmark) to a hydrolysis degree of 1-15%. The hydrolysates were tested for biological...... activities affecting cell proliferation and ability to modulate caspase activity in pancreatic cancer cells COLO357 and BxPC-3 in vitro. A number of the hydrolysates showed caspase promoting activity; in particular products containing muscle tissue, i.e. belly flap, were able to stimulate caspase activity...

  9. [H reflex in patients with spastic quadriplegia].

    Science.gov (United States)

    Miyama, Sahoko; Arimoto, Kiyoshi; Kimiya, Satoshi

    2009-01-01

    Hoffmann reflex (H reflex) is an electrically elicited spinal monosynaptic reflex. H reflex was examined in 18 patients with spastic quadriplegia who had perinatal or postnatal problems. H reflex was elicitable in 11 patients for the abductor pollicis brevis (61.1%), 10 for the abductor digiti minimi (55.6%) and 16 for the abductor hallucis (88.9%). Because the abductor pollicis brevis and the abductor digiti minimi do not exhibit H reflex in normal subjects, it was suggested that the excitability of alpha motor neurons innervating these muscles was increased. H reflex was not detected for the extensor digitorum brevis in any patients, indicating the difference in the excitability among alpha motor neurons. In some patients, H reflex did not disappear under supramaximal stimuli. We conclude that the mechanism of evolution of H reflex in patients with spastic quadriplegia is different from that in normal subjects.

  10. Effect of Smokeless Tobacco on Surface Roughness of Dental Restorations

    Science.gov (United States)

    2016-05-01

    peer pressure.  Ingredients  found in smokeless tobacco include:  polonium   210 , n­nitrosamines, formaldehyde,  nicotine, cadmium, cyanide, arsenic...flavors, preservatives, and sugars are also added.  Polynuclear aromatic  hydrocarbons,  polonium   210 , and n­nitrosamines represent the chemical...N­nitrosamines in tobacco by super critical fluid extraction. Journal of   Agricultural and  Food  Chemistry 43, 916–922.     24 Brunnemann KD, Hoffmann D, Qi J

  11. ["Pharmaco-theology"].

    Science.gov (United States)

    Krafft, F

    1996-06-01

    Physico-theology is a way of thinking and argumentation, especially of the protestantism during enlightenment, which, facing the new, namely causal-mechanical natural science, emphasizes the anthropocentrical expediency of creation (of the "liber naturae'), traces it in nature and therefrom derives God's omnipotence, grace and wisdom. Although physico-theological writings of the 18th century are treating all kinds of natural objects under this aspect, the herbs and natural remedies never have been mentioned in the historical research of physico-theology until now. Here, this gap is closed. The relevant writings by Friedrich Hoffmann, Johann Julius Hecker und Julius Bernhard von Rohr are briefly presented and thereby attention is drawn to an important zeitströmung which added substantially to a broad acceptance of medicaments which then formed the practical basis as one of the preconditions for the developing of pharmacy into science in the late 18th century.

  12. Movement Behavior of High-Heeled Walking

    DEFF Research Database (Denmark)

    Alkjær, Tine; Raffalt, Peter Christian; Petersen, Nicolas Caesar

    2012-01-01

    The human locomotor system is flexible and enables humans to move without falling even under less than optimal conditions. Walking with high-heeled shoes constitutes an unstable condition and here we ask how the nervous system controls the ankle joint in this situation? We investigated the movement...... behavior of high-heeled and barefooted walking in eleven female subjects. The movement variability was quantified by calculation of approximate entropy (ApEn) in the ankle joint angle and the standard deviation (SD) of the stride time intervals. Electromyography (EMG) of the soleus (SO) and tibialis...... anterior (TA) muscles and the soleus Hoffmann (H-) reflex were measured at 4.0 km/h on a motor driven treadmill to reveal the underlying motor strategies in each walking condition. The ApEn of the ankle joint angle was significantly higher (p...

  13. Nickel alloys and high-alloyed special stainless steels. Properties, manufacturing, applications. 4. compl. rev. ed.

    International Nuclear Information System (INIS)

    Heubner, Ulrich; Kloewer, Jutta; Alves, Helena; Behrens, Rainer; Schindler, Claudius; Wahl, Volker; Wolf, Martin

    2012-01-01

    This book contains the following eight topics: 1. Nickel alloys and high-alloy special stainless steels - Material overview and metallurgical principles (U. Heubner); 2. Corrosion resistance of nickel alloys and high-alloy special stainless steels (U. Heubner); 3. Welding of nickel alloys and high-alloy special stainless steels (T. Hoffmann, M. Wolf); 4. High-temperature materials for industrial plant construction (J. Kloewer); 5. Nickel alloys and high-alloy special stainless steels as hot roll clad composites-a cost-effective alternative (C. Schindler); 6. Selected examples of the use of nickel alloys and high-alloy special stainless steels in chemical plants (H. Alves); 7. The use of nickel alloys and stainless steels in environmental engineering (V. Wahl); 8: Nickel alloys and high-alloy special stainless steels for the oil and gas industry (R. Behrens).

  14. [Profile of Shohei Ninomiya (pharmacist), the first Japanese medical representative to practice modern European-style propaganda in the late Meiji era].

    Science.gov (United States)

    Nishikawa, Takashi

    2007-01-01

    A Swiss pharmaceutical company (F-Hoffmann-La Roche Ltd.), first introduced the profession of "propagandist" in Japan in 1912. At the time, Shohei Ninomiya was a chief hospital pharmacist, but he changed his vocation to become the first "propah" (Japanese abbreviation for propagandist). The German physician Dr. Rudolf Ebering initiated Dr. Ninomiya in the methods and principles of "propah," and he faithfully practiced them. The defining principle of a modern European propagandist is one who is far from sales-centered. From the late 1970s through 1980s, however, Japanese pharmaceutical companies indulged in pursuing sales and neglected this principle, resulting in numerous abuses and adverse effects. Today, use of the description "medical representative" (MR) is more common than "propah." Even with this different description, pharmaceutical companies and MRs should never neglect the founding principle to avoid repeating such abuses.

  15. [A pharmaceutical of the century will be 100. A historical vignette on the introduction of acetylsalicylic acid to the market in 1899].

    Science.gov (United States)

    Kohl, F

    1999-10-15

    This article describes the historic roots of acetylsalicylic acid (ASA) from the first experiments at 1800 until the introduction into the pharmaceutical market in 1899. In 1869, Hermann Kolbe enlightened the chemical structure of salicylic acid, which was used at that time as an analgetic and antipyretic drug. Because of the side effects, for example the irritation of the stomach, analytical chemists and pharmacologists searched for chemical modifications. In August 1897 Felix Hoffmann (1868-1946) was successful in acetylizing the salicylic acid to acetylsalicylic acid (ASA). Between 1897 and 1899 Kurt Witthauer (1865-1911) collected clinical data and experiences on the efficiency of ASA as an analgetic and antipyretic drug. In 1899 ASA was introduced into the pharmaceutical market as Aspirin and became soon one of the most successful drugs of its time. The indication exceeds analgesia in the mean time and to prophylaxis of myocardial ischaemia or cerebral stroke, among others.

  16. Estudo piloto sobre esquistossomose mansoni em área rural do Município de Itanhomi, Vale do Rio Doce, Minas Gerais

    Directory of Open Access Journals (Sweden)

    Maria José Conceição

    1978-12-01

    Full Text Available Neste trabalho os autores apresentam dados relativos à prevalência e formas clinicas da esquistossomose mansoni, hospedeiro intermediário e determinação do seu índice de infecção em Santa Luzia do Carneiro, área rural do Município de Itanhomi, Vale do Rio Doce, Minas Gerais. O estudo seccional da população revelou 42,1% de positividade para ovos de S.mansoni em um exame de fezes peto método de Lutz (Hoffmann, Ponz, Janer e um percentual de 6,8% de pacientes com hepato-esplenomegalia. O hospedeiro intermediário encontrado foi a B.glabrata com um índice de infecção de 3,2%.

  17. A case of asymmetrical arthrogryposis

    International Nuclear Information System (INIS)

    Hageman, G.; Vette, J.K.; Willemse, J.

    1983-01-01

    Following the introduction of the conception that arthrogryposis is a symptom and not a clinical entity, a case of the very rare asymmetric form of neurogenic arthrogryposis is presented. The asymmetry of congenital contractures and weakness is associated with hemihypotrophy. The value of muscular CT-scanning prior to muscle biopsy is demonstrated. Muscular CT-scanning shows the extension of adipose tissue, which has replaced damaged muscles and therby indicates the exact site for muscle biopsy. Since orthopaedic treatment in arthrogryposis can be unrewarding due to severe muscular degeneration, preoperative scanning may provide additional important information on muscular function and thus be of benefit for surgery. The advantage of muscular CT-scanning in other forms of arthrogryposis requires further determination. The differential diagnosis with Werdnig-Hoffmann disease is discussed. (author)

  18. Antigen retrieval prior to on-tissue digestion of formalin-fixed paraffin-embedded tumour tissue sections yields oxidation of proline residues.

    Science.gov (United States)

    Djidja, Marie-Claude; Claude, Emmanuelle; Scriven, Peter; Allen, David W; Carolan, Vikki A; Clench, Malcolm R

    2017-07-01

    MALDI-mass spectrometry imaging (MALDI-MSI) has been shown to allow the study of protein distribution and identification directly within formalin-fixed paraffin-embedded (FFPE) tissue sections. However, direct protein identification from tissue sections remains challenging due to signal interferences and/or existing post-translational or other chemical modifications. The use of antigen retrieval (AR) has been demonstrated for unlocking proteins prior to in situ enzymatic digestion and MALDI-MSI analysis of FFPE tissue sections. In the work reported here, the identification of proline oxidation, which may occur when performing the AR protocol, is described. This facilitated and considerably increased the number of identified peptides when adding proline oxidation as a variable modification to the MASCOT search criteria. This article is part of a Special Issue entitled: MALDI Imaging, edited by Dr. Corinna Henkel and Prof. Peter Hoffmann. Copyright © 2016 Elsevier B.V. All rights reserved.

  19. [Utilization of feed energy by growing pigs. 3. Energy requirement for the growth and fattening of pigs].

    Science.gov (United States)

    Hoffmann, L; Schiemann, R; Jentsch, W

    1979-02-01

    The test series for the investigation of the energy consumption of growing pigs of the breeds large white and improved land race pig as well as cross breeds of the two breeds in a total of 369 metabolism periods (as described in the first two pieces of information of this publication series -- Hoffmann and others, 1977 and Jentsch and Hoffmann, 1977) were statistically analysed for the purpose of the derivation of the energy requirement for maintenance and the partial energy requirement for growth in order to test the possibilities of the factorial analysis for the derivation of energy requirement values of growing pigs. The dependence of the maintenance requirement of growing pigs (investigations in the live weight range of 10 to 40 kg -- see 1st information--were made with boars those in the live weight range of 30 to 120 kg were made with gelded boars, 2nd information) on the live weight can best be characterised by applying a power exponent of 0,61 or 0,62 for the live weight. A definition is offered to be discussed for the energetic maintenance requirement of productive live stock and laboratory animals as a conventional value. The energy requirement values derived from the doubly-factorial statistical analysis show a satisfactory adaptation to the measured values as such concerning energy intake and observed growth performance of the test animals. The conclusion is drawn that the factorial analysis of the energy requirement (maintenance plus partial performances) results in a better estimate of the requirement of growing animals than the assessment according only to live weight and live weight increase without characterising the energy requirement for partial performances. This is important for the further working on and more exact definition of requirement norms.

  20. Reflexive contraction of the levator palpebrae superioris muscle to involuntarily sustain the effective eyelid retraction through the transverse trigeminal proprioceptive nerve on the proximal Mueller's muscle: verification with evoked electromyography.

    Science.gov (United States)

    Ban, Ryokuya; Matsuo, Kiyoshi; Osada, Yoshiro; Ban, Midori; Yuzuriha, Shunsuke

    2010-01-01

    We have proposed a hypothetical mechanism to involuntarily sustain the effective eyelid retraction, which consists of not only voluntary but also reflexive contractions of the levator palpebrae superior muscle (LPSM). Voluntary contraction of fast-twitch fibres of the LPSM stretches the mechanoreceptors in Mueller's muscle to evoke trigeminal proprioception, which induces continuous reflexive contraction of slow-twitch fibres of the LPSM through the trigeminal proprioceptive nerve fibres innervating the mechanoreceptors in Mueller's muscle via the oculomotor neurons, as a tonic trigemino-oculomotor reflex. In the common skeletal mixed muscles, electrical stimulation of the proprioceptive nerve, which apparently connects the mechanoreceptors in muscle spindles to the motoneurons, induces the electromyographic response as the Hoffmann reflex. To verify the presence of the trigemino-oculomotor reflex, we confirmed whether intra-operative electrical simulation of the transverse trigeminal proprioceptive nerve on the proximal Mueller's muscle evokes an electromyographic response in the LPSM under general anaesthesia in 12 patients. An ipsilateral, phasic, short-latency response (latency: 2.8+/-0.3 ms) was induced in the ipsilateral LPSM in 10 of 12 subjects. As successful induction of the short-latency response in the ipsilateral LPSM corresponds to the Hoffmann reflex in the common skeletal mixed muscles, the present study is the first electromyographic verification of the presence of the monosynaptic trigemino-oculomotor reflex to induce reflexive contraction of the LPSM. The presence of the trigemino-oculomotor reflex may elucidate the unexplainable blepharoptosis due to surgery, trauma and tumour, all of which may damage the trigeminal proprioceptive nerve fibres to impair the trigemino-oculomotor reflex. Copyright (c) 2008. Published by Elsevier Ltd.

  1. Prevalência de enteroparisitos na populaçao urbana de São Tomé - RN - estudo comparativo de um decênio

    Directory of Open Access Journals (Sweden)

    Carlos Alberto Moreira Campos

    1982-12-01

    Full Text Available Objetivando a obtenção de variáveis relacionadas aos fatores sócio-econômicos e sanitários no período de dez (10 anos, os autores colheram resultados sobre a prevalência de enteroparasitas na população urbana de São Tomé, Rio Grande do Norte, cujos dados foram coletados entre 09 a 27 de julho de 1979, empregando o método da sedimentação espontânea (Hoffmann, Pons e Janer, através de exames realizados em 826 amostras de fezes, com uma positividade de565 para as diversas parasitoses intestinais e correspondendo a uma prevalência de 68,4% em função das condições ambientais que, embora melhoradas, concorrem no processo de disseminação de helmintoses e protozooses, além de outras patologias.In view of socio-economic and sanitary changes during ten (10 years, the authors gathered data on the prevaíence of enteroparasites in the urban population of São Tomé, Rio Grande do Norte. They collected from July 9 to July 27, 1979, 826 faecal samples which they examined using the spontaneous sedimentation method (Hoffmann, Pons, and Janer. 565 were positive for the various intestinal parasites, corresponding to a prevaíence of 68,4%. Although environmetal conditions have improved, they still contributed to the dissemination intestinal protozoal and helminthic infections.

  2. COMPARAÇÃO DO CRESCIMENTO E DO DESGASTE DO CASCO EM BOVINOS TAURINOS E ZEBUÍNOS RATES OF HOOF GROWTH AND WEAR IN ZEBUINE AND TAURINE CATTLE

    Directory of Open Access Journals (Sweden)

    Rüdiger Daniel Ollhoff

    2001-02-01

    Full Text Available No presente trabalho, mediram-se o crescimento e o desgaste do casco dos quatro dígitos laterais, em duas posições (dorsal e lateral, em quatro garrotes da raça Jersey e quatro da raça Gir, mantidos em "tie-stall", sobre piso de cimento recoberto por alta camada de maravalha. O trabalho transcorreu no período de novembro de 1997 a abril de 1998. As medidas de crescimento e desgaste do casco foram obtidas empregando-se a técnica clássica descrita por Hahn et al. (1986. Não ocorreram diferenças significativas no crescimento e no desgaste dos cascos entre as raças estudadas, assim como entre as unhas dos cascos dos membros anteriores e posteriores. Em ambas as raças, foram constatados maiores desgaste e crescimento da região lateral (lado abaxial do casco, em relação à região dorsal, indicando que grande parte do contato e sustentação do corpo ocorre na área lateral do casco. A apara funcional acelera o crescimento do casco, porém não altera a taxa de desgaste.Rates of hoof growth and wear, on both dorsal and lateral surfaces of front and rear outside claws, were measured in four Jersey and four Gir yearling steers kept on a tie-stall system on a concrete ground covered by deep layer of sawdust. Measurements were taken from November 1997 to April 1998 according to the classical technique described by HAHN et al. (1986. No significant differences in the growth and wear of the claws were found between the two breeds. There was no significant difference of growth and wear rates between front and rear claws. Horn of the lateral walls grew and wore faster in taurine and zebuine cattle, indicating that most of the weight-bearing and contact to the soil is given through this region. Functional trimming increases claw horn growth but does not interfere with wear rates.

  3. Austria Declares Intent To Join ESO

    Science.gov (United States)

    2008-04-01

    At a press conference today at the University of Vienna's Observatory, the Austrian Science Minister Johannes Hahn announced the decision by the Austrian Government to seek membership of ESO from 1 July this year. ESO PR Photo 11/08 ESO PR Photo 11/08 Announcing Austria's Intent to Join ESO Said Minister Hahn: "With membership of ESO, Austria's scientists will receive direct access to the world's leading infrastructure in astronomy. This strengthens Austria as a place for research and provides an opportunity for young researchers to continue their work from here. With this move, Austria takes an important step in the reinforcement of Europe's science and research infrastructure." The decision constitutes a major breakthrough for Austrian scientists who have argued for membership of ESO for many years. Seeking membership in ESO also marks a step towards the further development of the European Research and Innovation Area, an important element of Europe's so-called Lisbon Strategy. "ESO welcomes the Austrian bid to join our organisation. I salute the Austrian Government for taking this important step and look forward to working closely with our Austrian friends and colleagues in the years to come," commented the ESO Director General, Tim de Zeeuw. For Austrian astronomers, ESO membership means not only unrestricted access to ESO's world-leading observational facilities including the world's most advanced optical telescope, the Very Large Telescope, and full participation in the quasi-global ALMA project, but also the possibility to participate on a par with their European colleagues in the future projects of ESO, including the realisation of ESO's Extremely Large Telescope project (E-ELT), which is currently in the design phase. All these projects require some of the most advanced technologies in key areas such as optics, detectors, lightweight structures, etc. Austrian participation in ESO opens the door for Austrian industry and major research institutes of the

  4. Ion mobilities in Xe/Ne and other rare-gas mixtures

    Energy Technology Data Exchange (ETDEWEB)

    Piscitelli, D; Pitchford, L C [Centre de Physique des Plasmas et Applications de Toulouse (CPAT), UMR 5002 CNRS, 118 route de Narbonne, 31062 Toulouse (France); Phelps, A V [JILA, University of Colorado and National Institute of Technology, Boulder, Colorado (United States); Urquijo, J de [Centro de Ciencias Fisicas, Universidad Nacional Autonoma de Mexico, Post Office Box 48-3, 62251, 80309-0440 Cuernavaca, Moreno (Mexico); Basurto, E [Departmento de Ciencias Basicas, Universidad Autonoma Metropolitana, 02200 Mexico Distrito Federal (Mexico)

    2003-10-01

    The ion mobility or drift velocity data important for modeling glow discharges in rare gas mixtures are not generally available, nor are the ion-neutral scattering cross sections needed to calculate these data. In this paper we propose a set of cross sections for Xe{sup +} and Ne{sup +} collisions with Xe and Ne atoms. Ion mobilities at 300 K calculated using this cross section set in a Monte Carlo simulation are reported for reduced field strengths, E/N, up to 1500x10{sup -21} V m{sup 2}, in pure gases and in Xe/Ne mixtures containing 5% and 20% Xe/Ne, which are mixtures of interest for plasma display panels (PDPs). The calculated Xe{sup +} mobilities depend strongly on the mixture composition, but the Ne{sup +} mobility varies only slightly with increasing Xe in the mixture over the range studied here. The mobilities in pure gases compare well with available experimental values, and mobilities in gas mixtures at low E/N compare well with our recent measurements which will be published separately. Results from these calculations of ion mobilities are used to evaluate the predictions of Blanc's law and of the mixture rule proposed by Mason and Hahn [Phys. Rev. A 5, 438 (1972)] for determining the ion mobilities in mixtures from a knowledge of the mobilities in each of the pure gases. The mixture rule of Mason and Hahn is accurate to better than 10% at high field strengths over a wide range of conditions of interest for modeling PDPs. We conclude that a good estimate of ion mobilities at high E/N in Xe/Ne and other binary rare gas mixtures can be obtained using this mixture rule combined with known values of mobilities in parent gases and with the Langevin form for mobility of rare gas ions ion in other gases. This conclusion is supported by results in Ar/Ne mixtures which are also presented here.

  5. Responses of diatom communities to hydrological processes during rainfall events

    Science.gov (United States)

    Wu, Naicheng; Faber, Claas; Ulrich, Uta; Fohrer, Nicola

    2015-04-01

    The importance of diatoms as a tracer of hydrological processes has been recently recognized (Pfister et al. 2009, Pfister et al. 2011, Tauro et al. 2013). However, diatom variations in a short-term scale (e.g., sub-daily) during rainfall events have not been well documented yet. In this study, rainfall event-based diatom samples were taken at the outlet of the Kielstau catchment (50 km2), a lowland catchment in northern Germany. A total of nine rainfall events were caught from May 2013 to April 2014. Non-metric multidimensional scaling (NMDS) revealed that diatom communities of different events were well separated along NMDS axis I and II, indicating a remarkable temporal variation. By correlating water level (a proxy of discharge) and different diatom indices, close relationships were found. For example, species richness, biovolume (μm3), Shannon diversity and moisture index01 (%, classified according to van Dam et al. 1994) were positively related with water level at the beginning phase of the rainfall (i.e. increasing limb of discharge peak). However, in contrast, during the recession limb of the discharge peak, diatom indices showed distinct responses to water level declines in different rainfall events. These preliminary results indicate that diatom indices are highly related to hydrological processes. The next steps will include finding out the possible mechanisms of the above phenomena, and exploring the contributions of abiotic variables (e.g., hydrologic indices, nutrients) to diatom community patterns. Based on this and ongoing studies (Wu et al. unpublished data), we will incorporate diatom data into End Member Mixing Analysis (EMMA) and select the tracer set that is best suited for separation of different runoff components in our study catchment. Keywords: Diatoms, Rainfall event, Non-metric multidimensional scaling, Hydrological process, Indices References: Pfister L, McDonnell JJ, Wrede S, Hlúbiková D, Matgen P, Fenicia F, Ector L, Hoffmann L

  6. Combination of geochemical and hydrobiological tracers for the analysis of runoff generating processes in a lowland catchment

    Science.gov (United States)

    Faber, Claas; Wu, Naicheng; Ulrich, Uta; Fohrer, Nicola

    2015-04-01

    EMMA dataset improves the ability to distinguish tile drainage, groundwater and surface runoff influence to streamflow in our agriculturally dominated lowland catchment. Keywords: tile drainage, surface runoff, groundwater, hydrograph separation, EMMA, dia-toms, water quality, lowland catchments References: Pfister L, Wetzel CE, Martínez-Carreras N, Frentress J, Ector L, Hoffmann L, McDonnell JJ. 2011. Do diatoms run downhill? Using biodiversity of terrestrial and aquatic diatoms to identify hydrological connectivity between aquatic zones in Luxembourg. AGU Fall Meeting. Tauro F, Martínez-Carreras N, Wetzel CE, Hissler C, Barnich F, Frentress J, Ector L, Hoff-mann L, McDonnell JJ, Pfister L. 2013. Fluorescent diatoms as hydrological tracers: a proof of concept percolation experiment. EGU abstract, EGU2013-7687-4.

  7. Il perturbante è l’identità divisa Un’interpretazione di Der Sandmann

    Directory of Open Access Journals (Sweden)

    Giovanni Bottiroli

    2015-07-01

    Full Text Available Il saggio di Freud sul perturbante ha offerto molti stimoli agli studi letterari e a quelli sul cinema: è stato commentato e discusso molte volte. Nella maggior parte dei casi, tuttavia, sembra essere stato letto frettolosamente: ci si è soffermati sulla tesi più evidente, che stabilisce un nesso tra perturbante e angoscia di castrazione, e sono state trascurate le affermazioni relative al problema dell’identità. Eppure, proprio in relazione a Der Sandmann Freud offre riflessioni di straordinaria importanza. Questo articolo si propone anzitutto di restituire al saggio di Freud la sua complessità: vengono messi in luce, ad esempio, i fraintendimenti e le forzature della critica femminista (Sarah Kof- man. E, soprattutto, propone una nuova interpretazione del racconto di Hoffmann, a partire dal concetto di ‘identità divisa’. L’identità si dice in due modi fondamentali, la coincidenza e la non-coincidenza con se stessi. Ogni soggetto sperimenta il conflitto tra questi due modi. Nel racconto di Hoffmann, il prota- gonista (Nathaniel viene trascinato al di là di se stesso, verso la fatale coincidenza con das Ding. È questa la fonte essenziale della sua angoscia. Der Sandmann è la storia di un’attrazione inesora- bile, rallentata da entità che svolgono una funzione-schermo: nel rapporto con la bambola Olimpia emergono tutti i paradossi che determinano la fragile identità di Nathaniel. Poiché il perturbante appartiene al campo dell’angoscia, non sarebbe stato possibile ignorare il Seminario X di Lacan, così come le riflessioni di Heidegger. Quest’articolo propone una revisione della concezione di Lacan: l’angoscia più devastante non deriva tanto da un eccesso di presenza (ciò che Lacan chiama «la mancanza della mancanza» quanto dallo svanire della non- coincidenza. Perturbante è la sensazione di un collasso logico-ontologico, a causa del quale il soggetto viene come incellofanato in se stesso

  8. Sensitivity enhancement by multiple-contact cross-polarization under magic-angle spinning.

    Science.gov (United States)

    Raya, J; Hirschinger, J

    2017-08-01

    Multiple-contact cross-polarization (MC-CP) is applied to powder samples of ferrocene and l-alanine under magic-angle spinning (MAS) conditions. The method is described analytically through the density matrix formalism. The combination of a two-step memory function approach and the Anderson-Weiss approximation is found to be particularly useful to derive approximate analytical solutions for single-contact Hartmann-Hahn CP (HHCP) and MC-CP dynamics under MAS. We show that the MC-CP sequence requiring no pulse-shape optimization yields higher polarizations at short contact times than optimized adiabatic passage through the HH condition CP (APHH-CP) when the MAS frequency is comparable to the heteronuclear dipolar coupling, i.e., when APHH-CP through a single sideband matching condition is impossible or difficult to perform. It is also shown that the MC-CP sideband HH conditions are generally much broader than for single-contact HHCP and that efficient polarization transfer at the centerband HH condition can be reintroduced by rotor-asynchronous multiple equilibrations-re-equilibrations with the proton spin bath. Boundary conditions for the successful use of the MC-CP experiment when relying on spin-lattice relaxation for repolarization are also examined. Copyright © 2017 Elsevier Inc. All rights reserved.

  9. Fritz Haber: December 9, 1868-January 29, 1934.

    Science.gov (United States)

    Witschi, H

    2000-08-14

    Fritz Haber (1868-1934) was a German physical chemist. Nobel laureate and foreign member of the US National Academy of Sciences. His greatest accomplishment in science was the development of a practical method to prepare nitrogen from air (nitrogen fixation or Haber-Bosch process). While working on the toxicity of war gases. he formulated 'Haber's rule', also known as C x T= constant in order to characterize the toxicity of an inhalant. Between 1919 and 1933. he was one of the leading figures in revitalizing science in Germany. At his institute in Berlin worked such luminaries as Albert Einstein, Lise Meitner and Otto Hahn. His last paper described what became known as the Haber-Weiss reaction. After his death he was for a long time forgotten by the Nazis because he was Jewish and after World War II by the Allies because of his work on war gases in World War I. And yet he was one of the truly great modern scientists. not only because of his science, but also because of the role he played in science politics and policies.

  10. Research on improvement of marine nuclear reactors and future perspective

    International Nuclear Information System (INIS)

    Yokomura, Takeyoshi

    1988-01-01

    The features when atomic energy is utilized on the sea are that the fuel cost is low, accordingly it is suitable to the power sources of large output, that the volume and weight of fuel are small, accordingly it is suitable to the continuous operation for a long period without refueling, and that oxygen is not required for the burning, accordingly it is suitable to undersea power sources. In USSR, four nuclear icebreakers have been in use, and four more are under construction. A nuclear LASH ship has been operated, and one more is under construction. As the other fields than sea transportation, an electricity generation barge MH-1A of USA used as the auxiliary power source for the Panama Canal and a research submarine NR-1 of USA have been in practical use. With the advance of ocean development in future, the creation of needs such as deep sea power stations, deep sea research ships and deep sea work ships is expected. Marine nuclear reactor technology was begun in the form of the nuclearization of merchant ships, and Savannah of USA, Otto Hahn of West Germany and Mutsu of Japan were built. The marine nuclear reactors built so far and of which the conceptual design was carried out are shown. The improvement of marine reactors is the reduction of size and weight, the simplification of the system, the adoption of self pressurization and self compensation and so on. The research on the improvement in Japan Atomic Energy Research Institute is reported. (Kako, I.)

  11. 2008 EUROSAFE Forum. The role of TSOs in view of rising demand for safety expertise

    International Nuclear Information System (INIS)

    May, Horst; Jansen, Florian; Seubert, Armin; Kaulard, Joerg; Weber, Stefan; Sternkopf, Juergen

    2009-01-01

    Some 400 guests from 27 nations attended the 10 th EUROSAFE Forum for Nuclear Safety in Paris in early November 2008. In addition to the proven specialized seminars, the event this time focused on the role of TSOs in view of the rising demand for safety expertise. Jacques Repussard, Director General of IRSN; Lothar Hahn, Technical-Scientific Managing Director, GRS; Benoit de Boeck, Managing Director, Bel V; Ales John, Director General, UJV (Nuclear Research Institute Rez plc); and Seppo Vuori, Chief Scientist, VTT, stressed the importance of close cooperation among European TSOs. In Europe, the need was becoming more and more apparent to harmonize safety requirements and standardize licensing criteria. The four specialized seminars discussed these topics: - Seminar 1: Safety of nuclear installations assessment and research. - Seminar 2: Environmental protection and radiation protection. - Seminar 3: Waste management and the environment. - Seminar 4: Safeguarding nuclear materials and plants. The presentations can be found under www.eurosafe-forum.org. The 11 th EUROSAFE Forum will be held in Brussels on November 2 and 3, 2009. (orig.)

  12. Estudo do processo de realização da produção de animação em longametragem do filme Até que a sbórnia nos separe = Process study of realization of animation production in movie feature film Até que a sbórnia nos separe

    Directory of Open Access Journals (Sweden)

    Branco, Marsal Ávila Alves

    2016-01-01

    Full Text Available Este artigo tem como tema o processo de realização audiovisual de animação em longa-metragem. Traz como problema a falta de uma sistematização eficiente desse processo no cenário nacional. Aprofundam-se quatro hipóteses para o problema supracitado: a a ausência de uma pré-produção e planejamento adequados; b a ineficácia da comunicação entre os membros da equipe; c a escassez de profissionais capacitados nas instâncias deste processo; d a total dependência de recursos públicos. A metodologia do artigo foi balizada em uma pesquisa descritiva através de estudo de caso, em uma coleta realizada com base nas técnicas de observação participativa. Fundamentando a análise, utilizaram-se os autores Gerbase (2012, Catmull (2014, Hahn (2008 e Thomas (1981. O objeto do estudo de caso é a animação “Até que a Sbórnia nos Separe” (2013. Como resultado, busca-se entender o processo de realização deste filme, obtendo-se, assim, um panorama do cenário contemporâneo da produção audiovisual brasileira

  13. Germany: Overview of activities on Neutron Imaging (NI) and Cultural Heritage (CH) studies - Helmholtz-Zentrum Berlin

    International Nuclear Information System (INIS)

    Kardjilov, Nikolay

    2012-01-01

    Neutron imaging is a non-destructive investigation method with a fast growing application field in materials research and fundamental science. The method is used broadly in the cultural heritage research as complementary technique to x-ray imaging. The ability of neutron beam to transmit thick layers of metal and the sensitivity to light elements makes the technique unique for detection of organic substances in metal and stone matrices. The high penetration power of neutrons allows for investigation of samples with real dimensions of about 100 cm3. The neutron imaging in cultural heritage helps to provide information about manufacturing processes and material properties which is very important for further restoration and conservation of the objects. The development of new methods like energy selective imaging and grating interferometry and the application of autoradiography increase the potential of the method for characterization of cultural heritage samples. The neutron tomography instrument CONRAD has been in operation since 2005 at the Hahn-Meitner research reactor at Helmholtz-Zentrum Berlin (HZB). Over the last 5 years, significant development work has been performed to expand the radiographic and tomographic capabilities of the beamline. New techniques have been implemented, including imaging with polarized neutrons, Bragg-edge mapping, high-resolution neutron imaging and grating interferometry. These methods together with the autoradiography have been provided to the user community as tools to help address scientific problems particularly in the field of cultural heritage and palaeontology. Descriptions and parameters of the facilities are given

  14. Radiofrequency fields in MAS solid state NMR probes

    Science.gov (United States)

    Tošner, Zdeněk; Purea, Armin; Struppe, Jochem O.; Wegner, Sebastian; Engelke, Frank; Glaser, Steffen J.; Reif, Bernd

    2017-11-01

    We present a detailed analysis of the radiofrequency (RF) field over full volume of a rotor that is generated in a solenoid coil. On top of the usually considered static distribution of amplitudes along the coil axis we describe dynamic radial RF inhomogeneities induced by sample rotation. During magic angle spinning (MAS), the mechanical rotation of the sample about the magic angle, a spin packet travels through areas of different RF fields and experiences periodical modulations of both the RF amplitude and the phase. These modulations become particularly severe at the end regions of the coil where the relative RF amplitude varies up to ±25% and the RF phase changes within ±30°. Using extensive numerical simulations we demonstrate effects of RF inhomogeneity on pulse calibration and for the ramped CP experiment performed at a wide range of MAS rates. In addition, we review various methods to map RF fields using a B0 gradient along the sample (rotor axis) for imaging purposes. Under such a gradient, a nutation experiment provides directly the RF amplitude distribution, a cross polarization experiment images the correlation of the RF fields on the two channels according to the Hartmann-Hahn matching condition, while a spin-lock experiment allows to calibrate the RF amplitude employing the rotary resonance recoupling condition. Knowledge of the RF field distribution in a coil provides key to understand its effects on performance of a pulse sequence at the spectrometer and enables to set robustness requirements in the experimental design.

  15. Nuclear magnetic ordering in silver

    International Nuclear Information System (INIS)

    Lefmann, K.

    1995-12-01

    Nuclear antiferromagnetic ordering has been observed by neutron diffraction in a single crystal of 109 Ag. The critical temperature is found to 700 pK, and the critical field is 100 μT. From the paramagnetic phase a second order phase transition leads into a type-I 1-k structure with long range order. The experiments have taken place at the Hahn-Meitner Institut in Berlin in collaboration with the low Temperature Laboratory in Helsinki, the Niels Bohr Institute in Copenhagen, and Risoe National Laboratory, Roskilde. The present report is a Ph.D. thesis which has been successfully defended at the Niels Bohr Institute. Besides the results of the nuclear ordering experiments the thesis contains a description of the theoretical background for nuclear magnetism and a review of earlier nuclear ordering experiments as well as theoretical work. The principles for studying polarized nuclei with use of polarized and unpolarized neutrons are presented, as well as the results of such experiments. (au) 11 tabs., 59 ills., 143 refs

  16. Nash points, Ky Fan inequality and equilibria of abstract economies in Max-Plus and -convexity

    Science.gov (United States)

    Briec, Walter; Horvath, Charles

    2008-05-01

    -convexity was introduced in [W. Briec, C. Horvath, -convexity, Optimization 53 (2004) 103-127]. Separation and Hahn-Banach like theorems can be found in [G. Adilov, A.M. Rubinov, -convex sets and functions, Numer. Funct. Anal. Optim. 27 (2006) 237-257] and [W. Briec, C.D. Horvath, A. Rubinov, Separation in -convexity, Pacific J. Optim. 1 (2005) 13-30]. We show here that all the basic results related to fixed point theorems are available in -convexity. Ky Fan inequality, existence of Nash equilibria and existence of equilibria for abstract economies are established in the framework of -convexity. Monotone analysis, or analysis on Maslov semimodules [V.N. Kolokoltsov, V.P. Maslov, Idempotent Analysis and Its Applications, Math. Appl., volE 401, Kluwer Academic, 1997; V.P. Litvinov, V.P. Maslov, G.B. Shpitz, Idempotent functional analysis: An algebraic approach, Math. Notes 69 (2001) 696-729; V.P. Maslov, S.N. Samborski (Eds.), Idempotent Analysis, Advances in Soviet Mathematics, Amer. Math. Soc., Providence, RI, 1992], is the natural framework for these results. From this point of view Max-Plus convexity and -convexity are isomorphic Maslov semimodules structures over isomorphic semirings. Therefore all the results of this paper hold in the context of Max-Plus convexity.

  17. „Náš národ Slovenský jest naposledy nepřestanné pilnosti a pracování oddaný.“ Teoretické koncepcie výskumu historických stereotypov aplikované pri analýze stereotypu pracovitosti Slovákov v 19. storočí

    Directory of Open Access Journals (Sweden)

    Rastislav Molda

    2011-12-01

    Full Text Available The article offers the theoretical concepts and methodological guidelines for research on  historical stereotypes of the major European theorists from the various social science disciplines. For us, an important theoretical and methodological interpretation of  ethnic and other stereotypes was formulated by Professor Hans Hening Hahn, as well as other Central European researchers. We use the presented theoretical and methodological guidelines to analyse the stereotype of Slovakian diligence. The primary sources of the textual analysis are ethnographic travelogues and diverse literature of Slovak origin, which are  rich sources for scientific interpretation of stereotypes. Writers resorted to an idealization and generalization of character, physical appearance and other characteristics of the population of Ungarn and the Habsburg monarchy, and so there were constructed ethnic/national, cultural, confessional, gender, as well as other auto/heterostereotypes. We deal with the stereotype of Slovak diligence, with specific attention to the situation in which they were formulated, we point out their tasks and the reciprocal interaction with other auto- and heterostereotypes.

  18. A RETURN ON INVESTMENT IN EMPLOYEE ASSISTANCE PROGRAMMES: A THEORETICAL UNDERPINNING

    Directory of Open Access Journals (Sweden)

    Keet, Anneline

    2013-05-01

    Full Text Available Mental health conditions such as stress, depression, substance abuse and relational problems are major contributors to sickness, absenteeism and lower job performance (Nissly & Mennen, 2002. Steward, Ricci, Chee, Hahn and Morganstein (2003 indicate that employees with depressive disorders present with almost four times more health-related lost productivity than those without depressive symptoms. This amounts to 5.6 hours per week lost by employees with depressive disorders in comparison with 1.5 hours lost by employees who do not suffer from these disorders, costing the United States economy up to $44 billion per year. Steele (2002 maintains that workdays lost because of substance abuse alone cost the US economy $5 billion dollars a year. In South Africa the Bytes Technology Group conducted a study (Bytes, 2011 indicating that local companies lose between R12 to R20 billion a year to absenteeism. An article in Rapport Loopbane (2 July 2006 also indicated that the cost of absenteeism for the South African economy was estimated at R20 billion for that year. It is unlikely that statistics have changed significantly over the last five years and the country continues to lose revenue through employee absenteeism.

  19. Rational hypocrisy: a Bayesian analysis based on informal argumentation and slippery slopes.

    Science.gov (United States)

    Rai, Tage S; Holyoak, Keith J

    2014-01-01

    Moral hypocrisy is typically viewed as an ethical accusation: Someone is applying different moral standards to essentially identical cases, dishonestly claiming that one action is acceptable while otherwise equivalent actions are not. We suggest that in some instances the apparent logical inconsistency stems from different evaluations of a weak argument, rather than dishonesty per se. Extending Corner, Hahn, and Oaksford's (2006) analysis of slippery slope arguments, we develop a Bayesian framework in which accusations of hypocrisy depend on inferences of shared category membership between proposed actions and previous standards, based on prior probabilities that inform the strength of competing hypotheses. Across three experiments, we demonstrate that inferences of hypocrisy increase as perceptions of the likelihood of shared category membership between precedent cases and current cases increase, that these inferences follow established principles of category induction, and that the presence of self-serving motives increases inferences of hypocrisy independent of changes in the actions themselves. Taken together, these results demonstrate that Bayesian analyses of weak arguments may have implications for assessing moral reasoning. © 2014 Cognitive Science Society, Inc.

  20. Theoretical proposal for a magnetic resonance study of charge transport in organic semiconductors

    Science.gov (United States)

    Mkhitaryan, Vagharsh

    Charge transport in disordered organic semiconductors occurs via carrier incoherent hops in a band of localized states. In the framework of continuous-time random walk the carrier on-site waiting time distribution (WTD) is one of the basic characteristics of diffusion. Besides, WTD is fundamentally related to the density of states (DOS) of localized states, which is a key feature of a material determining the optoelectric properties. However, reliable first-principle calculations of DOS in organic materials are not yet available and experimental characterization of DOS and WTD is desirable. We theoretically study the spin dynamics of hopping carriers and propose measurement schemes directly probing WTD, based on the zero-field spin relaxation and the primary (Hahn) spin echo. The proposed schemes are possible because, as we demonstrate, the long-time behavior of the zero-field relaxation and the primary echo is determined by WTD, both for the hyperfine coupling dominated and the spin-orbit coupling dominated spin dynamics. We also examine the dispersive charge transport, which is a non-Markovian sub-diffusive process characterized by non-stationarity. We show that the proposed schemes unambiguously capture the effects of non-stationarity, e.g., the aging behavior of random walks. This work was supported by the Department of Energy-Basic Energy Sciences under Contract No. DE-AC02-07CH11358.

  1. Study of the energetic proton production in relativistic heavy ions Ne + nuclei collisions, using Diogene detector. Hadronic matter temperature

    International Nuclear Information System (INIS)

    Rahmani, A.

    1988-12-01

    The study of the proton's production differential cross sections, in the collision of relativistic heavy ions, allows to obtain the nuclear-matter temperature and gives information about the nucleons large burst pulses in the nucleus. The chosen thermodynamic model is a generalized approach of the R. Hagedorn model, applied to heavy ions collisions: the nuclear matter is divided in volume elements δV assumed to be in thermal and chemical equilibrium and emitting particles and fragments isotropically, inside their own system. The applied nuclear-matter velocity distribution depended only on the impact parameter and on the relationship between the chemical potential and the temperature. The predictions of this thermodynamic model were compared to the Saturne experimental results, using Diogene detector. The obtained temperature values are similar to those given by D. Hahn and H. Stoker. The proton production cross sections were measured for backward emitting angles. A relationship between the cross sections and the burst pulse distribution in the nuclei was settled [fr

  2. Building-Up of a DNA Barcode Library for True Bugs (Insecta: Hemiptera: Heteroptera) of Germany Reveals Taxonomic Uncertainties and Surprises

    Science.gov (United States)

    Raupach, Michael J.; Hendrich, Lars; Küchler, Stefan M.; Deister, Fabian; Morinière, Jérome; Gossner, Martin M.

    2014-01-01

    During the last few years, DNA barcoding has become an efficient method for the identification of species. In the case of insects, most published DNA barcoding studies focus on species of the Ephemeroptera, Trichoptera, Hymenoptera and especially Lepidoptera. In this study we test the efficiency of DNA barcoding for true bugs (Hemiptera: Heteroptera), an ecological and economical highly important as well as morphologically diverse insect taxon. As part of our study we analyzed DNA barcodes for 1742 specimens of 457 species, comprising 39 families of the Heteroptera. We found low nucleotide distances with a minimum pairwise K2P distance 2.2% were detected for 16 traditionally recognized and valid species. With a successful identification rate of 91.5% (418 species) our study emphasizes the use of DNA barcodes for the identification of true bugs and represents an important step in building-up a comprehensive barcode library for true bugs in Germany and Central Europe as well. Our study also highlights the urgent necessity of taxonomic revisions for various taxa of the Heteroptera, with a special focus on various species of the Miridae. In this context we found evidence for on-going hybridization events within various taxonomically challenging genera (e.g. Nabis Latreille, 1802 (Nabidae), Lygus Hahn, 1833 (Miridae), Phytocoris Fallén, 1814 (Miridae)) as well as the putative existence of cryptic species (e.g. Aneurus avenius (Duffour, 1833) (Aradidae) or Orius niger (Wolff, 1811) (Anthocoridae)). PMID:25203616

  3. Chemistry at molecular junctions: Rotation and dissociation of O2 on the Ag(110) surface induced by a scanning tunneling microscope.

    Science.gov (United States)

    Roy, Sharani; Mujica, Vladimiro; Ratner, Mark A

    2013-08-21

    The scanning tunneling microscope (STM) is a fascinating tool used to perform chemical processes at the single-molecule level, including bond formation, bond breaking, and even chemical reactions. Hahn and Ho [J. Chem. Phys. 123, 214702 (2005)] performed controlled rotations and dissociations of single O2 molecules chemisorbed on the Ag(110) surface at precise bias voltages using STM. These threshold voltages were dependent on the direction of the bias voltage and the initial orientation of the chemisorbed molecule. They also observed an interesting voltage-direction-dependent and orientation-dependent pathway selectivity suggestive of mode-selective chemistry at molecular junctions, such that in one case the molecule underwent direct dissociation, whereas in the other case it underwent rotation-mediated dissociation. We present a detailed, first-principles-based theoretical study to investigate the mechanism of the tunneling-induced O2 dynamics, including the origin of the observed threshold voltages, the pathway dependence, and the rate of O2 dissociation. Results show a direct correspondence between the observed threshold voltage for a process and the activation energy for that process. The pathway selectivity arises from a competition between the voltage-modified barrier heights for rotation and dissociation, and the coupling strength of the tunneling electrons to the rotational and vibrational modes of the adsorbed molecule. Finally, we explore the "dipole" and "resonance" mechanisms of inelastic electron tunneling to elucidate the energy transfer between the tunneling electrons and chemisorbed O2.

  4. Fifty years with nuclear fission

    International Nuclear Information System (INIS)

    Behrens, J.W.; Carlson, A.D.

    1989-01-01

    The news of the discovery of nucler fission, by Otto Hahn and Fritz Strassmann in Germany, was brought to the United States by Niels Bohr in January 1939. Since its discovery, the United States, and the world for that matter, has never been the same. It therefore seemed appropriate to acknowledge the fiftieth anniversary of its discovery by holding a topical meeting entitled, ''Fifty years with nuclear fission,'' in the United States during the year 1989. The objective of the meeting was to bring together pioneers of the nuclear industry and other scientists and engineers to report on reminiscences of the past and on the more recent developments in fission science and technology. The conference highlighted the early pioneers of the nuclear industry by dedicating a full day (April 26), consisting of two plenary sessions, at the National Academy of Sciences (NAS) in Washington, DC. More recent developments in fission science and technology in addition to historical reflections were topics for two full days of sessions (April 27 and 28) at the main sites of the NIST in Gaithersburg, Maryland. The wide range of topics covered by Volume 2 of this topical meeting included plenary invited, and contributed sessions entitled, Nuclear fission -- a prospective; reactors II; fission science II; medical and industrial applications by by-products; reactors and safeguards; general research, instrumentation, and by-products; and fission data, astrophysics, and space applications. The individual papers have been cataloged separately

  5. Nuclear energy: fusion and fission - From the atomic nucleus to energy

    International Nuclear Information System (INIS)

    2002-09-01

    Matter is made up of atoms. In 1912, the English physicist Ernest Rutherford (who had shown that the atom had a nucleus), and the Danish physicist Niels Bohr developed a model in which the atom was made up of a positively charged nucleus surrounded by a cloud of electrons. In 1913, Rutherford discovered the proton, and in 1932, the English physicist Chadwick discovered the neutron. In 1938, Hahn and Strassmann discovered spontaneous fission and the French physicist Frederic Joliot-Curie, assisted by Lew Kowarski and Hans Von Halban, showed in 1939 that splitting uranium nuclei caused an intense release of heat. The discovery of the chain reaction would enable the exploitation of nuclear energy. 'It was the Second World War leaders who, by encouraging research for military purposes, contributed to the development of nuclear energy'. During the Second World War, from 1939 to 1945, studies of fission continued in the United States, with the participation of emigre physicists. The Manhattan project was launched, the aim of which was to provide the country with a nuclear weapon (used at Hiroshima and Nagasaki in 1945). After the war ended, research into energy production by the nuclear fission reaction continued for civil purposes. CEA (the French Atomic Energy Commission) was set up in France in 1945 under the impetus of General de Gaulle. This public research body is responsible for giving France mastery of the atom in the research, health, energy, industrial, safety and defense sectors. (authors)

  6. Development of nuclear powered ship in Japan

    International Nuclear Information System (INIS)

    Sato, Hiroshi

    1976-01-01

    The development of nuclear merchant ship in Japan was started in 1955 by the establishment of Nuclear Ship Study Group, and since then, the investigation, test and research on nuclear ships have been continued. As a result, a nuclear ocean observation and supply ship was designed for trial. Researches were carried out also in JAERI and Institute for Technical Research of Ships. Meanwhile, the nuclear icebreaker Lenin was completed in Soviet Union in 1959, the nuclear ship Savannah set out for maiden voyage in U.S. in 1962, and the construction of the nuclear ore carrier Otto Hahn was prepared in FRG. Japan Nuclear Ship Development Corp. was established in 1963, and started the design and construction of the first nuclear ship in Japan, Mutsu. The basic policy in the construction is the improvement of nuclear ship technology, the securing of safety, and the use of domestic technologies as far as possible. The progress of the design, construction and test of the Mutsu is described. Owing to the problem of radiation leak, the development of nuclear ships stagnated for a while, but the nuclear plant of the Mutsu demonstrated the expected performance in the functional test, land criticality test and zero output test, and it is expected that the bud of the independent development brought up so far can bear valuable fruit. The independent development of marine nuclear reactors should be continued by selecting the way most suitable to Japan. (Kako, I.)

  7. Influence of the p ¯ -p Nuclear Interaction on the Rate of the Low-Energy p ¯ + H μ → ( p ¯ p α + μ − Reaction

    Directory of Open Access Journals (Sweden)

    Renat A. Sultanov

    2018-04-01

    Full Text Available The influence of an additional strong p ¯ -p nuclear interaction in a three-charge-particle system with arbitrary masses is investigated. Specifically, the system of p ¯ , μ − , and p is considered in this paper, where p ¯ is an antiproton, μ − is a muon and p is a proton. A numerical computation in the framework of a detailed few-body approach is carried out for the following protonium (antiprotonic hydrogen formation three-body reaction: p ¯ + H μ ( 1 s → ( p ¯ p α + μ − . Here, H μ ( 1 s is a ground state muonic hydrogen, i.e., a bound state of p and μ − . A bound state of p and its antimatter counterpart p ¯ is a protonium atom in a quantum atomic state α , i.e., P n = ( p ¯ p α . The low-energy cross sections and rates of the P n formation reaction are computed in the framework of coupled Faddeev-Hahn-type equations. The strong p ¯ -p interaction is included in these calculations within a first order approximation. It was found, that the inclusion of the nuclear interaction results in a quite significant correction to the rate of the three-body reaction.

  8. Radiating matter

    International Nuclear Information System (INIS)

    Zimen, K.E.

    1987-01-01

    The author describes the history and uses of radioactivity. The narration is completed by bibliographic notes on Otto Hahn with a number of so far unpublished letters and documents and on Leo Szilard, the most far-sighted among the nuclear researchers actively engaged during the war. The first part deals with the discovery of radioactivity and the discovery of uranium fission in 1938 with its military consequences, up to the short-lived euphoria on the 'atomic age' (Geneva conference 1955). This is followed by an account of natural radioactivity in our environment, a brief of useful information on radiation effects and radiation protection, and of typical applications of radioactive beams in science, engineering, and medicine. The final part is concerned with the most important instances of insight into nature triggered by the discovery of radioactivity: From cosmological to chemical evolution, from Democrit's atom theory to modern nuclear physics' particle zoo, from the contest of ideas between acausalists and determinists on what is commonly termed 'coincidence' to the limits of graphic views on nature. (orig./HP) [de

  9. Radiating matter

    International Nuclear Information System (INIS)

    Zimen, K.E.

    1990-01-01

    The author describes the history and uses of radioactivity. The narration is completed by bibliographic notes on Otto Hahn with a number of so far unpublished letters and documents and on Leo Szilard, the most far-sighted among the nuclear researchers actively engaged during the war. The first part deals with the discovery of radioactivity and the discovery of uranium fission in 1938 with its military consequences, up to the short-lived euphoria on the 'atomic age' (Geneva conference 1955). This is followed by an account of natural radioactivity in our environment, a brief of useful information on radiation effects and radiation protection, and of typical applications of radioactive beams in science, engineering, and medicine. The final part is concerned with the most important instances of insight into nature triggered by the discovery of radioactivity: From cosmological to chemical evolution, from Democrit's atom theory to modern nuclear physics' particle zoo, from the contest of ideas between acausalists and determinists on what is commonly termed 'coincidence' to the limits of graphic views on nature. (orig.) With 40 figs [de

  10. 1938-1942: the fateful 4 years of discovery

    International Nuclear Information System (INIS)

    Anon.

    1992-01-01

    The chain of discovery which led from an experiment in 1938 which demonstrated nuclear fission to the first controlled chain reaction in the Chicago Pile 1 (CP1) on 2nd December 1942 is outlined. The initial experiment by Hahn and Strassman detected barium as a product of the bombardment of uranium by neutrons. An explanation of the presence of the barium was offered by Meitner and Frisch in terms of the fission of the uranium atom into two elements. This involved a net reduction in mass which it was suggested was converted into energy. This was subsequently confirmed experimentally. A further prediction that the process produced secondary neutrons was also confirmed leading to the possibility of a chain reaction. From then on, efforts were directed in Germany, the USA and the United Kingdom towards the building of a structure in which there was a self-propagating, controlled, chain reaction and also into devising a bomb based on an explosive nuclear chain reaction. The elements of an ''atomic pile'' were gradually conceived including neutron moderation, critical size, the neutron multiplication factor and a reactor lattice. Under the direction of Fermi, this culminated in the construction of the uranium, graphite moderated pile CP1. The plutonium produced in such a reactor was one route to a bomb. Of other routes explored in the USA over the same period, the separation of U235 by gaseous diffusion was selected for development. (UK)

  11. 2000, the centenary of the birth of Frederic Joliot

    International Nuclear Information System (INIS)

    Radvanyi, P.

    2000-01-01

    This article is a short biography of Frederic Joliot. In 1935 F. Joliot and his wife Irene Curie received the Nobel prize of chemistry for their discovery of artificial radioactivity. In january 1939 F.Joliot acknowledged the results of O. Hahn and F. Strassmann about a new nuclear process called fission and he performed a very simple experiment in order to prove fission experimentally by observing fission fragments. Later F.Joliot imagined the possibility of a chain reaction made up of successive fissions self-sustained by the neutrons emitted and able to produce energy. In the same time, similar ideas were developed by E.Fermi's team at Columbia University in New-York. The saga of the quest for heavy water during world war two is recalled. In 1946 F.Joliot was appointed as the first director of the recently created French ''Commissariat a l'energie atomique'' (CEA), in march 1950 he wrote and signed the first ''appel de Stockholm'' where he called for an absolute forbidding of non-peaceful use of nuclear energy, in april he was removed from office. (A.C.)

  12. New CMS spokesperson: “An honour to be chosen to lead a spectacular collection of people”

    CERN Multimedia

    Achintya Rao

    2016-01-01

    Fermilab’s Joel Butler will take the reins of the CMS collaboration in September, after having been elected as its new spokesperson during the last CMS Week.   Joel Butler, new CMS spokesperson. (Image: Reidar Hahn/Fermilab) On 10 February, members of the CMS Collaboration Board, the “parliament” of the collaboration, held a ballot to appoint their next leader. The Board chose Joel Butler, who brings a wealth of experience – more than thirty years at Fermilab and more than ten of those with CMS – to this important management role, leading a collaboration of 3000 people from across the globe. High on Joel’s priority list is making sure that all collaborators are able to participate in the collaboration’s research easily and to the best of their abilities: “We need everybody to be involved in CMS, whether they’re big or small institutions,” he says in his office in CERN’s Building ...

  13. Identification and Quantitation of Phenylalanine in the Brain of Patients with Phenylketonuria by Means of Localized in Vivo1H Magnetic-Resonance Spectroscopy

    Science.gov (United States)

    Kreis, R.; Pietz, J.; Penzien, J.; Herschkowitz, N.; Boesch, C.

    Localized proton MR spectroscopy was used to identify phenylalanine (PHE) and to quantitate its cerebral concentration in patients with type I phenylketonuria (PKU). Data acquisition was optimized for the detection of low-concentration metabolites, using a short TE (20 ms) double Hahn-echo localization sequence for large volumes within the head coil and for smaller volumes using a surface coil, Previously described methods to quantitate localized MR spectra were extended to cover the case of low-concentration metabolites, unevenly distributed in three brain compartments and measured in difference spectra only. PHE content was determined in difference spectra of four PKU patients with respect to normals and in one patient before and after an oral load of L-PHE, PHE concentrations of 0.3 to 0.6 mmol/kg brain tissue were obtained, resulting in a concentration gradient for PHE between blood and brain tissue of 2.4 to 3.0, No significant changes were found for the abundant metabolites in gray or white matter. Previously reported MRI changes were confirmed to be due to increased cerebro-spinal-fluid-like spaces.

  14. Quantum communication and state transfer in spin chains

    International Nuclear Information System (INIS)

    Van der Jeugt, Joris

    2011-01-01

    We investigate the time evolution of a single spin excitation state in certain linear spin chains, as a model for quantum communication. We consider first the simplest possible spin chain, where the spin chain data (the nearest neighbour interaction strengths and the magnetic field strengths) are constant throughout the chain. The time evolution of a single spin state is determined, and this time evolution is illustrated by means of an animation. Some years ago it was discovered that when the spin chain data are of a special form so-called perfect state transfer takes place. These special spin chain data can be linked to the Jacobi matrix entries of Krawtchouk polynomials or dual Hahn polynomials. We discuss here the case related to Krawtchouk polynomials, and illustrate the possibility of perfect state transfer by an animation showing the time evolution of the spin chain from an initial single spin state. Very recently, these ideas were extended to discrete orthogonal polynomials of q-hypergeometric type. Here, a remarkable result is a new analytic model where perfect state transfer is achieved: this is when the spin chain data are related to the Jacobi matrix of q-Krawtchouk polynomials. This case is discussed here, and again illustrated by means of an animation.

  15. Methods for sequential resonance assignment in solid, uniformly 13C, 15N labelled peptides: Quantification and application to antamanide

    International Nuclear Information System (INIS)

    Detken, Andreas; Hardy, Edme H.; Ernst, Matthias; Kainosho, Masatsune; Kawakami, Toru; Aimoto, Saburo; Meier, Beat H.

    2001-01-01

    The application of adiabatic polarization-transfer experiments to resonance assignment in solid, uniformly 13 C- 15 N-labelled polypeptides is demonstrated for the cyclic decapeptide antamanide. A homonuclear correlation experiment employing the DREAM sequence for adiabatic dipolar transfer yields a complete assignment of the C α and aliphatic side-chain 13 C resonances to amino acid types. The same information can be obtained from a TOBSY experiment using the recently introduced P9 1 12 TOBSY sequence, which employs the J couplings as a transfer mechanism. A comparison of the two methods is presented. Except for some aromatic phenylalanine resonances, a complete sequence-specific assignment of the 13 C and 15 N resonances in antamanide is achieved by a series of selective or broadband adiabatic triple-resonance experiments. Heteronuclear transfer by adiabatic-passage Hartmann-Hahn cross polarization is combined with adiabatic homonuclear transfer by the DREAM and rotational-resonance tickling sequences into two- and three-dimensional experiments. The performance of these experiments is evaluated quantitatively

  16. Exchange of equipment between CERN and JINR

    CERN Multimedia

    CERN Bulletin

    2010-01-01

    The drift chambers of the former NA48 experiment have recently left CERN to be installed in the MPD experiment at the future NICA accelerator in Dubna, Russia. As a counterpart, the JINR Laboratory will produce drift chambers for the new NA62 experiment. This operation is a fruitful exchange of technology that profits both laboratories and enhances their collaboration.   On 22 July, in the occasion of the departure of the chambers from CERN, Mikhail Itkis (centre), acting Director of the JIINR visited the NA62 experimental area accompanied by Rolf Heuer (left), CERN Director General and Ferdinand Hahn, NA62 technical Co-ordinator. The NA48 drift chambers were overhauled in 2000 and employed until 2008. With a total of 110 kilometres of wire soldered to a very high degree of precision, the four drift chambers were a crucial element of the experimental kaon programme at CERN. The chambers are now moving to a new challenge as they will be re-used by the Multi Purpose Detector (MPD) experiment, under...

  17. Reports from the working group on neutron scattering

    International Nuclear Information System (INIS)

    1979-06-01

    The present report contains papers dating from July 1978 until May 1979. During this period the experimental facilities have been expanded; a new four-circuit neutron spectrometer was installed and, together with the Fritz Hafer Institute, a measuring point was set up for investigations of ideal crystals, the Compton scattering equipment has been essentially improved. The report contains a contribution on the mechanics and the control of the neutron diffractometers existing at BER II. The main subjects of the scientific research work were magnetic structures and phase transitions, electron densities and chemical bonds, structure and dynamics of molecular crystals. At the BER II reactor measuring opportunities could be offered to a number of guest groups. Their research activities are reported, too. In addition to those made at the Berlin reactor BER II measurements could be made at the accelerator VICKSI of the Hahn-Meitner Institute and at the reactors of the Institute Laue-Langevin at Grenoble and of the Research Establishment at Riso by the working groups. (orig.) [de

  18. Development of a composite large-size SiPM (assembled matrix) based modular detector cluster for MAGIC

    Science.gov (United States)

    Hahn, A.; Mazin, D.; Bangale, P.; Dettlaff, A.; Fink, D.; Grundner, F.; Haberer, W.; Maier, R.; Mirzoyan, R.; Podkladkin, S.; Teshima, M.; Wetteskind, H.

    2017-02-01

    The MAGIC collaboration operates two 17 m diameter Imaging Atmospheric Cherenkov Telescopes (IACTs) on the Canary Island of La Palma. Each of the two telescopes is currently equipped with a photomultiplier tube (PMT) based imaging camera. Due to the advances in the development of Silicon Photomultipliers (SiPMs), they are becoming a widely used alternative to PMTs in many research fields including gamma-ray astronomy. Within the Otto-Hahn group at the Max Planck Institute for Physics, Munich, we are developing a SiPM based detector module for a possible upgrade of the MAGIC cameras and also for future experiments as, e.g., the Large Size Telescopes (LST) of the Cherenkov Telescope Array (CTA). Because of the small size of individual SiPM sensors (6 mm×6 mm) with respect to the 1-inch diameter PMTs currently used in MAGIC, we use a custom-made matrix of SiPMs to cover the same detection area. We developed an electronic circuit to actively sum up and amplify the SiPM signals. Existing non-imaging hexagonal light concentrators (Winston cones) used in MAGIC have been modified for the angular acceptance of the SiPMs by using C++ based ray tracing simulations. The first prototype based detector module includes seven channels and was installed into the MAGIC camera in May 2015. We present the results of the first prototype and its performance as well as the status of the project and discuss its challenges.

  19. Spin gymnastics with selective radiofrequency pulses

    Energy Technology Data Exchange (ETDEWEB)

    Freeman, R.; Kupce, E. [Cambridge Univ. (United Kingdom)

    1994-12-31

    Although high resolution NMR spectra are normally excited with short intense radiofrequency pulses, there is an entire family of new experiments that can be performed with frequency-selective or ``soft`` pulses. Time-consuming two-dimensional spectroscopy may be reduced to a much shorter one-dimensional version with much finer digitization in the frequency domain. A large number of soft pulses can be combined to form a ``polychromatic pulse`` that has uniform excitation over the entire range of proton shifts except for a rejection notch at the water frequency. Polychromatic pulses can also be used to create antiphase magnetization in preparation for a coherence transfer or double-quantum experiment. An excitation profile can be designed in the form of a ``template`` that exactly matches the spectrum of a given chemical compound but has zero excitation elsewhere. This is achieved by using the information in the experimental free induction decay to construct a suitable array of soft pulses that has the required excitation pattern. In this manner, interpenetrating spectra can be separated into the spectra of the pure components, for example those of a and b glucose. Selective Hartmann-Hahn coherence transfer experiments employ similar soft pulse techniques. If several such transfers are concatenated, the method may be used as a test to see whether a group of protons is linked in an unbroken chain by scalar spin-spin interactions. (authors). 24 refs., 18 figs.

  20. Controlled energy generation from nuclear fusion. 60th year atw

    Energy Technology Data Exchange (ETDEWEB)

    Weiss, Georg [Pintsch Bamag AG, Frankfurt am Main (Germany)

    2015-02-15

    Prospects increase, that with a controlled process of nuclear fusion one day an additional nuclear energy source will be commercially exploitable. In what follows, scientific principles according to the most recent research will be presented. Since approximately 30 years we are aware of the fact, that energy in form of light and heat provided by the sun and other fixed stars since over four billions years resulted from reactions of atomic nuclei. A series of such reactions became known which are considered for 'thermonuclear' processes, for example the carbon cycle by Bethe, where hydrogen is converted into helium. Most of the reflections and experiments dealt until 1938 with the reaction between nuclei of light elements. The possibility of splitting heavy nuclei was not anticipated. Its discovery by Hahn and Strassmann was a complete surprise - so to speak a rash reaction to release energy at the end of the element row. This 'way out' captured the interest of nuclear physicist for more than a decade. Only today, by starting to construct big nuclear power plants - only today, being able to assess the possibilities and limitations of this technology, the idea of energy generation through nuclear fusion steps into the foreground of nuclear research.

  1. From the nuclear stalemate to a nuclear-weapon free world. In memory of Klaus Fuchs

    International Nuclear Information System (INIS)

    Flach, Guenter; Fuchs-Kittowski, Klaus

    2012-01-01

    The following topics were dealt with: The first soviet atomic bomb and Klaus Fuchs, in illusory worlds of Andrei Sakharov, Edward Teller, and Klaus Fuchs, Klaus Fuchs as grandfather of the hydrogen bomb, memories of and thinking about Klaus Fuchs, the Scottish years of Klaus Fuchs 1937-1941, Klaus Fuchs in the mirror of the Venona documents, Gernot Zippe and the ultracentrifuge or east-west technology transfer in the cold war, secret impulses for the soviet nuclear project, responsibility of knowledge with anti-facism, philosophy, and science as well as peace as the first human right in the work of Klaus Fuchs, the request of Klaus Fuchs for a lasting peace, Klaus Fuchs in Daniel Granin's roman ''Escape to Russia'', ways to a nuclear-weapon free world, Otto Hahn and the declarations of Mainau and Goettingen, nuclear winter, initiatives of the GDR for the prohibition of weapons of mass destruction, nuclear weapons in negative entropy, militarism and antimilitarism of the nuclear age, contributions of the young Klaus Fuchs to statistical physics, nuclear disarmament and the peaceful use of nuclear energy, the responsibility of the scientists for a socially effective and efficient energy change, Berlin-Bucher contributions to a world free of biological weapons. (HSI)

  2. HMI Radiation Chemistry Department. Scientific report 1985

    International Nuclear Information System (INIS)

    1985-01-01

    Results of the R and D activities of the Radiation Chemistry Department, Hahn-Meitner-Institut, are reported, primarily dealing with the following subjects: a) Interface processes and energy conversion; b) Pulsed radiolysis and kinematics; c) Insulating materials and polymers. Activities belonging to group (a) above include the development of photosensitive materials for energy conversion, photovoltaic solar cells, light-induced hydrogen liberation, and inclusion reactions, model experiments studying photoactive interfaces, rapid kinematic measurements at interfaces after laser-induced excitation, surface preparation of amorphous silicon and its effects on electronic properties, photochemical reactions and catalysts. Work performed in group (b) above included studies into various chemical reactions involving radicals, and on interactions between atoms, ions, molecules and molecular clusters induced by low-energy collisions. Group (c) above all performed studies into the physical and chemical elementary processes induced by high-energy radiation, light and UV light, especially in electronegative gases. Further activities in this group included photochemical and radiation chemical investigations on polymers. The report lists publications and lectures prepared by H.M.I. members and guest scientists in the year 1985. (RB) [de

  3. Use of different Zn precursors for the deposition of Zn(S,O) buffer layers by chemical bath for chalcopyrite based Cd-free thin-film solar cells

    Energy Technology Data Exchange (ETDEWEB)

    Saez-Araoz, R.; Lux-Steiner, M.C. [Hahn Meitner Institut, Berlin (Germany); Freie Universitaet Berlin, Berlin (Germany); Ennaoui, A.; Kropp, T.; Veryaeva, E. [Hahn Meitner Institut, Berlin (Germany); Niesen, T.P. [AVANCIS GmbH and Co. KG, Munich (Germany)

    2008-10-15

    Progress in fabricating Cu(In,Ga)(S,Se){sub 2} (CIGSSe) solar cells with Zn(S,O) buffer layers prepared by chemical bath deposition (CBD) is discussed. The effect of different Zn salt precursors on solar cell device performance is investigated using production scale CIGSSe absorbers provided by AVANCIS GmbH and Co. KG. The CBD process has been developed at the Hahn-Meitner-Institut (HMI) using zinc nitrate, zinc sulphate or zinc chloride as zinc precursor. An average efficiency of 14.2{+-}0.8% is obtained by using one-layer CBD Zn(S,O) The dominant recombination path for well performing solar cells is discussed based on the results obtained from temperature dependent J(V) analysis. The structure and morphology of buffer layers deposited using zinc nitrate and zinc sulphate has been studied by means of transmission electron micrographs of glass/Mo/CIGSSe/Zn(S,O) structures. Results show a conformal coverage of the absorber by a Zn(S,O) layer of 15-25 nm consisting of nanocrystals with radii of {proportional_to}5 nm. XAES analysis of the buffer layer reveals a similar surface composition for buffer layers deposited with zinc nitrate and zinc sulphate. (copyright 2008 WILEY-VCH Verlag GmbH and Co. KGaA, Weinheim) (orig.)

  4. Review of glass ceramic waste forms

    International Nuclear Information System (INIS)

    Rusin, J.M.

    1981-01-01

    Glass ceramics are being considered for the immobilization of nuclear wastes to obtain a waste form with improved properties relative to glasses. Improved impact resistance, decreased thermal expansion, and increased leach resistance are possible. In addition to improved properties, the spontaneous devitrification exhibited in some waste-containing glasses can be avoided by the controlled crystallization after melting in the glass-ceramic process. The majority of the glass-ceramic development for nuclear wastes has been conducted at the Hahn-Meitner Institute (HMI) in Germany. Two of their products, a celsian-based (BaAl 3 Si 2 O 8 ) and a fresnoite-based (Ba 2 TiSi 2 O 8 ) glass ceramic, have been studied at Pacific Northwest Laboratory (PNL). A basalt-based glass ceramic primarily containing diopsidic augite (CaMgSi 2 O 6 ) has been developed at PNL. This glass ceramic is of interest since it would be in near equilibrium with a basalt repository. Studies at the Power Reactor and Nuclear Fuel Development Corporation (PNC) in Japan have favored a glass-ceramic product based upon diopside (CaMgSi 2 O 6 ). Compositions, processing conditions, and product characterization of typical commercial and nuclear waste glass ceramics are discussed. In general, glass-ceramic waste forms can offer improved strength and decreased thermal expansion. Due to typcially large residual glass phases of up to 50%, there may be little improvement in leach resistance

  5. HEU/LEU-conversion of BER II successfully finished

    International Nuclear Information System (INIS)

    Haas, K.; Fischer, C.-O.; Krohn, H.

    2000-01-01

    The BER II (Berliner Experimental Reactor) research reactor is a swimming pool type reactor located in Berlin, Germany. The reactor operates with a thermal power of 10 MW and is primarily used to produce neutrons for neutron scattering experiments. The conversion from HEU- to LEU-fuel elements began in August, 1997. At the last RERTR Meeting 1999 in Budapest, Hungary, Hahn-Meitner-Institut (HMI) presented a 'Status Report' on the conversion of 10 HEU/LEU mixed cores. In February 2000, HMI finished the HEU/LEU-conversion. Hereby, the first pure LEU-standard-core went into operation. Our second LEU-core just ends its operation at the end of July. The third LEU-core will be built up in the beginning of August. The average burn-up rate was improved from 50 - 55% (HEU) to 60 - 65% (LEU). Therefore, only 14 elements/year are now used instead of 28/year. The following report describes our first steps in building pure LEU-cores from mixed HEU/LEU-cores, as well as our initial experience using the pure LEU-cores. (author)

  6. Rate of hydrogen motion in Ni-substituted LaNi{sub 5}H{sub x} from NMR

    Energy Technology Data Exchange (ETDEWEB)

    Mendenhall, Michael P. [Washington University, Department of Physics, Saint Louis, MO 63130 (United States); Bowman, Robert C. [Jet Propulsion Laboratory, California Institute of Technology, Mail Stop 79-24, 4800 Oak Grove Drive, Pasadena, CA 91109 (United States); Ivancic, Timothy M. [Washington University, Department of Physics, Saint Louis, MO 63130 (United States); Conradi, Mark S. [Washington University, Department of Physics, Saint Louis, MO 63130 (United States)], E-mail: msc@wuphys.wustl.edu

    2007-10-31

    Partial substitution of Sn, Ge, or Si for Ni in LaNi{sub 5}H{sub x} greatly enhances the stability under repeated hydrogen-cycling. Proton NMR relaxation measurements are reported here to determine the rates of H hopping in the substituted metals LaNi{sub 4.6}M{sub 0.4}H{sub x} with M = Sn, Ge, and Si, for comparison to bare LaNi{sub 5}H{sub x}. The relaxation times T{sub 2}{sup *} (FID), T{sub 2} (Hahn echo), T{sub 2}-CPMG, T{sub 1}, and T{sub 1{rho}} were determined from 130 to 375 K. The three substituents result in only small increases in the average rate of motion at a given temperature but with a broader distribution of rates over the many inequivalent H sites and hopping paths. Evidently, the average energy barriers along the paths for H motion are only little affected by these substituents. Changes of H content x produce only minor changes in the relaxation times.

  7. People involved in radiation research and protection - an historical perspective

    International Nuclear Information System (INIS)

    Toussaint, L.F.

    2010-01-01

    Full text: The lives of selected people involved in radiation research are covered in two parts: 1. history of radiation and radioactivity; and 2. historical aspects of radiation and radiation protection in Western Australia. History of radiation/radioactivity: The background of some of the key people involved in early radiation research is discussed. These include Rontgen and Becqucrel who undertook early research into X-rays and radioactivity respectively. As well as the radiation hazards which early radiation scientists faced, there were also social pressures, as exemplified by the life of women such as Marie Curie, particularly after the death of her husband Pierre. Despite this being the time of the so-called 'beautiful years' in Europe, where there was a friendly exchange of ideas between scientists from various countries, there were also protracted disagreements. Some of the scientific findings of the Curies' daughter (Irene Joliot-Curie) and husband (Frederic Joliot-Curie) were vigorously disputed by Lisa Meitner (and colleague Otto Hahn) in Vienna. The 'beautiful years' came to an end when politics intruded and scientists such as Lisa Meitner had to flee from persecution. The splitting of the atom and realisation (by Leo Szilard) that a chain reaction was possible, led to political barriers being erected around scientists. With Europe poised for war, the implication of this science for warfare application was cause for concern among many of the normally free thinking and co-operative scientists. Secrecy now prevailed.

  8. A Transcriptome Survey Spanning Life Stages and Sexes of the Harlequin Bug, Murgantia histrionica

    Directory of Open Access Journals (Sweden)

    Michael E. Sparks

    2017-05-01

    Full Text Available The harlequin bug, Murgantia histrionica (Hahn, is an agricultural pest in the continental United States, particularly in southern states. Reliable gene sequence data are especially useful to the development of species-specific, environmentally friendly molecular biopesticides and effective biolures for this insect. Here, mRNAs were sampled from whole insects at the 2nd and 4th nymphal instars, as well as sexed adults, and sequenced using Illumina RNA-Seq technology. A global assembly of these data identified 72,540 putative unique transcripts bearing high levels of similarity to transcripts identified in other taxa, with over 99% of conserved single-copy orthologs among insects being detected. Gene ontology and protein family analyses were conducted to explore the functional potential of the harlequin bug’s gene repertoire, and phylogenetic analyses were conducted on gene families germane to xenobiotic detoxification, including glutathione S-transferases, carboxylesterases and cytochrome P450s. Genic content in harlequin bug was compared with that of the closely related invasive pest, the brown marmorated stink bug, Halyomorpha halys (Stål. Quantitative analyses of harlequin bug gene expression levels, experimentally validated using quantitative real-time PCR, identified genes differentially expressed between life stages and/or sexes.

  9. The discovery of the neutron and its consequences (1930-1940)

    Science.gov (United States)

    Nesvizhevsky, Valery; Villain, Jacques

    2017-11-01

    In 1930, Walther Bothe and Herbert Becker performed an experiment, which was further improved by Irène and Frédéric Joliot-Curie. These authors, however, misinterpreted their results and believed to have observed γ-rays while they had seen neutrons. After additional experimental verifications, James Chadwick gave the correct interpretation of these experiments in 1932. Immediately, the new particle, the neutron, became an essential actor of nuclear and elementary particle physics, and completely changed the whole research landscape. Enrico Fermi and his group applied it to artificial radioactivity, substituting neutrons to α-rays initially used by Joliot-Curies. They also discovered that slow neutrons were more efficient than fast ones in certain nuclear reactions. A crucial discovery of Otto Hahn, Fritz Straßmann, Lise Meitner, and Otto Frisch, after several misinterpretations of complicated experimental results, was nuclear fission. When Joliot, Halban, and Kowarski demonstrated the possibility of a chain reaction by neutron multiplication due to fission, nuclear physics became a military science, at the very moment when the Second World War was beginning. Later it led to nuclear power applications and use of neutrons as an important tool and object of scientific research at large-scale neutron facilities. The Comptes rendus de l'Académie des sciences were partner of a vivid international debate involving several other journals.

  10. Novel multi-dimensional heteronuclear NMR techniques for the study of 13C-O-acetylated oligosaccharides: Expanding the dimensions for carbohydrate structures

    Energy Technology Data Exchange (ETDEWEB)

    Jones, David N.M. [University of Colorado Health Sciences Center, Departments of Pharmacology (United States); Bendiak, Brad [University of Colorado Health Sciences Center, Departments of Cellular and Structural Biology (United States)

    1999-10-15

    Complex carbohydrates have critical roles in a wide variety of biological processes. An understanding of the molecular mechanisms that underlie these processes is essential in the development of novel oligosaccharide-based therapeutic strategies. Unfortunately, obtaining detailed structural information for larger oligosaccharides (>10 residues) can be exceedingly difficult, especially where the amount of sample available is limited. Here we demonstrate the application of {sup 13} C O-acetylation in combination with novel NMR experiments to obtain much of the information required to characterize the primary structure of oligosaccharides. (H)C{sub Me}COH-HEHAHA and H(C{sub Me})COH-HEHAHA experiments are presented that use heteronuclear Hartmann-Hahn transfer to correlate the acetyl groups with sugar ring protons in peracetylated oligosaccharides. The in-phase, pure absorption nature of the correlation peaks in these experiments allows measurement of both chemical shifts and, importantly, {sup 1}H-{sup 1}H coupling constants that are used to define the stereochemistry of the sugar ring. The (HC{sub Me})COH and (HC{sub Me})COH-RELAY experiments provide additional methods for obtaining chemical shift assignments for larger oligosaccharides to define the sites of glycosidic linkages from the patterns of acetylation.

  11. Particle emission induced by the interaction of highly charged slow Xe-ions with a SiO2 surface

    International Nuclear Information System (INIS)

    Schiwietz, G.; Skogvall, B.; Schneider, D.; Clark, M.; DeWitt, D.; McDonald, J.

    1991-01-01

    Sputtering of surface atoms by low energy (a few keV) heavy ions is a commonly used technique in material science and applied physics. In general, sputtering occurs via nuclear energy transfer processes and is determined mainly by the atom-atom interaction potentials. In the energy range of interest these potentials depend only slightly on the charge state of one collision partner if the other is neutral. The development of new ion-sources, however, allows for the use of ions with charged states of q > 50. For these highly charged ions it is conceivable that electronic processes come into play as well. If, for example, the density of charged surface atoms exceeds a certain limit, then particle emission can occur via the electrostatic repulsion of target atoms, the so-called Coulomb explosion. Indications for such electronic effects have been found in a few investigations of ion-induced sputtering Si (q q+ ). However, the order of magnitude of this effect is not clear until now. In this work we present preliminary data on sputtering, ion backscattering, electron and photon emission from SiO 2 surface induced by incident Xe ions of very high charge states (q=30--50). The experiment was performed at the electron beam ion trap (EBIT) of the Lawrence Livermore National Laboratory using a time-of-flight (TOF) ion analyzer-system from the Hahn-Meitner-Institute, Berlin

  12. Precise modelling of the eye for proton therapy of intra-ocular tumours

    Energy Technology Data Exchange (ETDEWEB)

    Dobler, B.; Bendl, R. [Medizinische Physik, Deutsches Krebsforschungszentrum, INF 280, 69120 Heidelberg (Germany)]. E-mails: b.dobler@dkfz-heidelberg.de; barbara.dobler@gmx.de; r.bendl@dkfz-heidelberg.de

    2002-02-21

    A new method is described that allows precise modelling of organs at risk and target volume for radiation therapy of intra-ocular tumours. The aim is to optimize the dose distribution and thus to reduce normal tissue complication probability. A geometrical 3D model based on elliptic shapes was developed that can be used for multimodal model-based segmentation of 3D patient data. The tumour volume cannot be clearly identified in CT and MR data, whereas the tumour outline can be discriminated very precisely in fundus photographs. Therefore, a multimodal 2D fundus diagram was developed, which allows us to correlate and display simultaneously information extracted from the eye model, 3D data and the fundus photograph. Thus, the connection of fundus diagram and 3D data is well-defined and the 3D volume can be calculated directly from the tumour outline drawn onto the fundus photograph and the tumour height measured by ultrasound. The method allows the calculation of a precise 3D eye model of the patient, including the different structures of the eye as well as the tumour volume. The method was developed as part of the new 3D treatment planning system OCTOPUS for proton therapy of ocular tumours within a national research project together with the Hahn-Meitner-Institut Berlin. (author)

  13. Real-time dose calculation and visualization for the proton therapy of ocular tumours

    Energy Technology Data Exchange (ETDEWEB)

    Pfeiffer, Karsten [Medizinische Physik, Deutsches Krebsforschungszentrum, INF 280, D-69120 Heidelberg (Germany). E-mail: k.pfeiffer at dkfz.de; Bendl, Rolf [Medizinische Physik, Deutsches Krebsforschungszentrum, INF 280, D-69120 Heidelberg (Germany). E-mail: r.bendl at dkfz.de

    2001-03-01

    A new real-time dose calculation and visualization was developed as part of the new 3D treatment planning tool OCTOPUS for proton therapy of ocular tumours within a national research project together with the Hahn-Meitner Institut Berlin. The implementation resolves the common separation between parameter definition, dose calculation and evaluation and allows a direct examination of the expected dose distribution while adjusting the treatment parameters. The new tool allows the therapist to move the desired dose distribution under visual control in 3D to the appropriate place. The visualization of the resulting dose distribution as a 3D surface model, on any 2D slice or on the surface of specified ocular structures is done automatically when adapting parameters during the planning process. In addition, approximate dose volume histograms may be calculated with little extra time. The dose distribution is calculated and visualized in 200 ms with an accuracy of 6% for the 3D isodose surfaces and 8% for other objects. This paper discusses the advantages and limitations of this new approach. (author)

  14. IMO and the peaceful use of nuclear energy through the last 30 years

    International Nuclear Information System (INIS)

    Jansen, E.

    1990-01-01

    All nuclear electric power reactors in operation and under construction by the end of 1988 are tabulated. Unclassified published statistics show that in 1988, on a world basis, there were 376 active nuclear powered submarines and surface craft, while 47 were under construction or in the process of conversion. Information on types, number of units, and nationality of these nuclear powered navy vessels is given. Parallel to this development, the Soviet Union has successfully built and put into operation a fleet of nuclear powered icebreakers, starting with the Lenin, commissioned in 1959. The first nuclear powered merchant ship, the United States' Savannah, was launched on 21 July 1959, and put into service on 1 May 1962. The Federal Republic of Germany put their nuclear propelled merchant ship Otto Hahn into operation in October 1968, and in November the same year the keel of the first Japanese nuclear ship, the Mutsu, was laid. The International Maritime Organisation (IMO) has, throughout its thirty year existence, made recommendations and developed a Nuclear Ship Safety Code to cover the safety requirements of nuclear ships, and has promoted the peaceful uses of nuclear energy. With the depletion of natural resources and environmental pollution such as the emission of gases causing the greenhouse effect, the correct and safe application of nuclear energy for peaceful purposes, including merchant ships, is likely to be the most efficient and hygienic source of energy in the next century. (UK)

  15. Diffusion of renewable energy technologies in South Korea on incorporating their competitive interrelationships

    International Nuclear Information System (INIS)

    Huh, Sung-Yoon; Lee, Chul-Yong

    2014-01-01

    Renewable energy technologies (RETs) have attracted significant public attention for several reasons, the most important being that they are clean alternative energy sources that help reduce greenhouse gas emissions. To increase the probability that RETs will be successful, it is essential to reduce the uncertainty about its adoption with accurate long-term demand forecasting. This study develops a diffusion model that incorporates the effect of competitive interrelationships among renewable sources to forecast the growth pattern of five RETs: solar photovoltaic, wind power, and fuel cell in the electric power sector, and solar thermal and geothermal energy in the heating sector. The 2-step forecasting procedure is based on the Bayus, (1993. Manage. Sci. 39, 11, 1319–1333) price function and a diffusion model suggested by Hahn et al. (1994. Marketing Sci. 13, 3, 224–247). In an empirical analysis, the model is applied to the South Korean renewable energy market. - Highlights: • We develop a diffusion model incorporating the competition among renewables. • A price function and a diffusion model are used in 2-step forecasting procedure. • The annual demand through 2035 for five renewables in South Korea is forecasted. • Wind power will maintain the largest market share in the electric power sector. • The supply of geothermal energy will be larger than that of solar thermal energy

  16. Report from the neutron diffraction work group

    International Nuclear Information System (INIS)

    1978-08-01

    This progress report of the neutron diffraction group at the Hahn Meitner Institute in Berlin comprises the following contributions: Three-dimensional critical properties of CsNiF 3 around the Neel point; Spin waves in CsNiF 3 with an applied magnetic field; Solitons in CsNiF 3 : Their experimental evidence and their thermodynamics; Neutron diffraction study of DAG at very low temperatures and in external magnetic field; Neutron diffraction investigation of tricritical behaviour in DyPO 4 ; Crystalline modifications and structural phase transitions of NaOH; Gitterdynamik von Cerhydrid; Investigation of the ferroelectric-ferroelastic phase transition in KH 2 PO 4 and RbH 2 PO 4 by means of γ-ray diffractometry; A γ-ray diffractometer for systematic measurements of absolute structure factors; Electron density in pyrite by combined γ-ray and neutron diffraction measurements: Thermal parameters from short wavelength neutron data; Accurate determination of temperature parameters from neutron diffraction data: Direct observation of the thermal diffuse scattering from silicon using perfect crystals; A Compton spectrometer for momentum density studies using 412 keV γ-radiation; Investigation of the electronic structure of Niobiumhydrides by means of gamma-ray Compton scattering; Interpretation of Compton profile data in position space; High resolution neutron scattering measurements on single crystals using a horizontally bent monochromator and a multidetecter; Statistical analysis of neutron diffraction studies of proteins. (orig.) [de

  17. Patient attitudes and preferences regarding literacy screening in ambulatory cancer care clinics

    Directory of Open Access Journals (Sweden)

    Elizabeth A Hahn

    2010-04-01

    Full Text Available Elizabeth A Hahn1, Sofia F Garcia1, Hongyan Du2, David Cella11Department of Medical Social Sciences, Feinberg School of Medicine, Northwestern University, Chicago; 2Center on Outcomes, Research and Education, NorthShore University HealthSystem, Evanston, IL, USAObjectives: To evaluate patient attitudes towards literacy screening, agreement between literacy tests, and associations between literacy, informed consent comprehension, and health-related quality of life (HRQL.Methods: Participants completed three literacy tests, read a sample consent form, and reported their HRQL, experiences, and attitudes.Results: We enrolled 97 cancer patients, of whom 66% were female, 67% were African American, and 65% were high school graduates. Sixty percent of patients with lower reading comprehension had trouble reading health information, and 31% had trouble reading everyday written material. Even patients with higher reading comprehension had trouble reading health information (29% and everyday written material (10%. Low-literacy patients were more likely to feel anxious about literacy screening. However, the majority of patients (84% would be willing to have literacy results given to providers. Comprehension of informed consent increased with higher literacy. There were no HRQL differences.Conclusions: Patients report difficulty comprehending written health information. Literacy assessment is acceptable and it is considered important for providers to be aware of their patients’ reading abilities. Patient preference data should be used to improve literacy testing strategies and measures. Enhancing detection of low literacy can facilitate interventions to reduce health disparities.Keywords: health literacy, screening, informed consent, reading, writing

  18. An unusual case of an isolated capitellar fracture of the right elbow in a child: a case report

    Directory of Open Access Journals (Sweden)

    Gonçalves Pestana José

    2012-02-01

    Full Text Available Abstract Introduction Although elbow fractures have a high incidence in the pediatric population, fractures of the capitellum are almost exclusively observed in individuals older than 12 years of age. Due to their rarity in children, reports with large numbers of cases are lacking in the literature and the surgical treatment options are poorly defined. Case presentation We present the case of an 11-year-old Portuguese girl with a displaced fracture of the capitellum of the right elbow, a typical Hahn-Steinthal or Type 1 fracture, which was followed for one year. The treatment and outcome of this fracture are described. Our patient underwent an open reduction and internal fixation with two cannulated screws. There were no complications and normal elbow function was recovered. Conclusion The authors believe that cannulated screw fixation is a reliable method of treatment for Type 1 capitellar fracture in children because it enables good interfragmentary compression, early mobilization, faster functional elbow recovery and implant removal is rarely necessary.

  19. Personal reminiscences of the Kaiser Wilhelm Institute, Berlin, 1937/38 and of the nuclear project in Canada, 1944/56

    International Nuclear Information System (INIS)

    Cook, L.G.

    1989-01-01

    Part 1 of this talk deals with reminiscences from the Kaiser Wilhelm Institute in Berlin during the period 1937-1938. Topics include the course of experimental events and the continuing search for interpretations that would stand up, the guiding influence of the work of Irene Curie and Pvale Savic on the experimental work of Hahn and Strassmann, the influence and effects of Nazi political pressures within the Institute, the shadows of war, and how uranium fission finally got itself discovered. Part 2 gives reminiscences from the Nuclear Project in Canada from 1944 to 1956 as an extension of the pre-war work in Paris - both in concept and in personnel - created by British effort, the powerful changing US influences, the shift to British direction and a goal, the world's first high power heavy water moderated reactor for the production of massive quantities of synthetic radioactive materials, extraction processes including those for plutonium, the shift to Canadian direction and goals, a heavy water moderated electricity production system, and a postscript

  20. Einleitung

    Science.gov (United States)

    Herrmann, Christoph

    Veränderungen unserer Umwelt, wie z.B. die Globalisierung und Dynamisierung der Absatz- und Beschaffungsmärkte, führen zu einer steigenden Komplexität in unternehmerischen Entscheidungssituationen. Die Dynamik der Veränderungen erfordert eine immer schnellere Anpassung der Unternehmen an ihre Umwelt (Malik 2006). Die aktive Gestaltung dieser notwendigen Anpassungen in Form des unternehmerischen Wandels wird damit zu einer entscheidenden Fähigkeit von Unternehmen (Westkämper 2002). Insbesondere für kleine und mittlere Unternehmen (KMU) stellen die rasant steigenden Anforderungen an die Anpassungsfähigkeit - auch aufgrund vielschichtiger KMU-spezifischer Faktoren (wie z.B. eine fehlende oder nur lückenhaft formulierte Unternehmensstrategie, fehlende Methodenkompetenz, etc.) - die zentrale Herausforderung für die Zukunft dar. Da KMU in der Regel in die Zulieferketten größerer Unternehmen eingebunden sind, werden zudem die Anpassungsanforderungen der großen Unternehmen an die kleinen und mittleren Unternehmen weitergegeben. Erfolgt die Anpassung von KMU an die zeitlichen, qualitativen oder kostenbezogenen Anforderungen ihrer Kunden nur langsam oder in unzureichendem Maße, verlieren KMU im Verlaufe der Zeit ihre Wettbewerbs- und damit ihre Überlebensfähigkeit (Gomez u. Hahn 1994).

  1. Advanced Test Reactor National Scientific User Facility (ATR NSUF) Monthly Report October 2014

    Energy Technology Data Exchange (ETDEWEB)

    Ogden, Dan [Idaho National Lab. (INL), Idaho Falls, ID (United States)

    2014-10-01

    Advanced Test Reactor National Scientific User Facility (ATR NSUF) Monthly Report October 2014 Highlights • Rory Kennedy, Dan Ogden and Brenden Heidrich traveled to Germantown October 6-7, for a review of the Infrastructure Management mission with Shane Johnson, Mike Worley, Bradley Williams and Alison Hahn from NE-4 and Mary McCune from NE-3. Heidrich briefed the group on the project progress from July to October 2014 as well as the planned path forward for FY15. • Jim Cole gave two invited university seminars at Ohio State University and University of Florida, providing an overview of NSUF including available capabilities and the process for accessing facilities through the peer reviewed proposal process. • Jim Cole and Rory Kennedy co-chaired the NuMat meeting with Todd Allen. The meeting, sponsored by Elsevier publishing, was held in Clearwater, Florida, and is considered one of the premier nuclear fuels and materials conferences. Over 340 delegates attended with 160 oral and over 200 posters presented over 4 days. • Thirty-one pre-applications were submitted for NSUF access through the NE-4 Combined Innovative Nuclear Research Funding Opportunity Announcement. • Fourteen proposals were received for the NSUF Rapid Turnaround Experiment Summer 2014 call. Proposal evaluations are underway. • John Jackson and Rory Kennedy attended the Nuclear Fuels Industry Research meeting. Jackson presented an overview of ongoing NSUF industry research.

  2. The theory of accelerated particles in AVF cyclotrons

    International Nuclear Information System (INIS)

    Schulte, W.M.

    1978-01-01

    This thesis deals with the study of the motion of accelerated charged particles in an AVF cyclotron. This study has been done on behalf of the VICKSI- project of the Hahn-Meitner-Institut in West Berlin. A new theory is developed which facilitates an accurate description of the influence of the acceleration on the motion in the median plane of a cyclotron. The theory is applied to systems with 1 or 2 Dee electrodes, the frequency of the accelerating voltage being equal to the revolution frequency of the particles or a higher harmonic of this frequency. It turned out that the betatron oscillations in the radial phase space may be disturbed considerably as a result of the acceleration. In the theory the author makes use of the Hamilton formalism. After a number of canonical transformations a Hamilton function was found, in which the most important effects show themselves clearly. The corresponding equations of motion can be solved very quickly with the help of a simple computer program. The results of this theory are in agreement with those of extensive numerical orbit integration programmes. In this thesis attention is also devoted to the centering of the beam in the VICKSI cyclotron just after injection, the possibility to obtain single-turn extraction and the interpretation of the high frequency phase measurements. (Auth.)

  3. Nuclear magnetic ordering in silver

    Energy Technology Data Exchange (ETDEWEB)

    Lefmann, K

    1995-12-01

    Nuclear antiferromagnetic ordering has been observed by neutron diffraction in a single crystal of {sup 109}Ag. The critical temperature is found to 700 pK, and the critical field is 100 {mu}T. From the paramagnetic phase a second order phase transition leads into a type-I 1-k structure with long range order. The experiments have taken place at the Hahn-Meitner Institut in Berlin in collaboration with the low Temperature Laboratory in Helsinki, the Niels Bohr Institute in Copenhagen, and Risoe National Laboratory, Roskilde. The present report is a Ph.D. thesis which has been successfully defended at the Niels Bohr Institute. Besides the results of the nuclear ordering experiments the thesis contains a description of the theoretical background for nuclear magnetism and a review of earlier nuclear ordering experiments as well as theoretical work. The principles for studying polarized nuclei with use of polarized and unpolarized neutrons are presented, as well as the results of such experiments. (au) 11 tabs., 59 ills., 143 refs.

  4. A summary of the XAFS X Conference in Chicago

    International Nuclear Information System (INIS)

    Kemner, K.; Sayers, D.

    1999-01-01

    On August 10-14, 1998, the 10th International Conference on X-ray Absorption Fine Structure (XAFS X) was held on the Illinois Institute of Technology campus in Chicago. This is one of the major synchrotron radiation conferences, held every two years since 1981 when the first international meeting of XAFS experts was held in Daresbury, coincident with the operation of the first of the second-generation dedicated synchrotron radiation sources. The XAFS conferences have evolved over the years with the more recent conferences covering not only the advances in instrumentation, theory and method but also their applications in disciplines ranging from biological to environmental sciences. Approximately 360 scientists from 23 countries attended the conference. The program consisted of 467 abstracts for plenary talks, invited talks, contributed talks, and posters. The co-chairs for the conference were B. Bunker, S. Heald, and T. Morrison and the Program Chair was J. Penner-Hahn. The first IXS award for career contributions to the field was presented to F. Lytle who gave a plenary talk on 'The EXAFS Family Tree: History of the Development of X-ray Absorption Spectroscopy'. In addition, awards were given for the best poster by a young scientist at each session. The winners were M. Duff, D. Cabaret and S. Rossano. The International Union of Crystallography (IUCr) also sponsored poster prizes for the best posters in the areas of biology and instrumentation and methods. These winners were A. Templeton and M. Suzuki

  5. Compound Nucleus Reactions in LENR, Analogy to Uranium Fission

    Science.gov (United States)

    Hora, Heinrich; Miley, George; Philberth, Karl

    2008-03-01

    The discovery of nuclear fission by Hahn and Strassmann was based on a very rare microanalytical result that could not initially indicate the very complicated details of this most important process. A similarity is discussed for the low energy nuclear reactions (LENRs) with analogies to the yield structure found in measurements of uranium fission. The LENR product distribution measured earlier in a reproducible way in experiments with thin film electrodes and a high density deuteron concentration in palladium has several striking similarities with the uranium fission fragment yield curve.ootnotetextG.H. Miley and J.A. Patterson, J. New Energy 1, 11 (1996); G.H. Miley et al, Proc ICCF6, p. 629 (1997).This comparison is specifically focussed to the Maruhn-Greiner local maximum of the distribution within the large-scale minimum when the fission nuclei are excited. Implications for uranium fission are discussed in comparison with LENR relative to the identification of fission a hypothetical compound nuclear reaction via a element ^306X126 with double magic numbers.

  6. Low-Energy Nuclear Reactions Resulting as Picometer Interactions with Similarity to K-Shell Electron Capture

    Science.gov (United States)

    Hora, H.; Miley, G. H.; Li, X. Z.; Kelly, J. C.; Osman, F.

    2006-02-01

    Since the appeal by Brian Josephson at the meeting of the Nobel Laureates July 2004, it seems to be indicated to summarize the following serious, reproducible and confirmed observations on reactions of protons or deuterons incorporated in host metals such as palladium. Some reflections to Rutherford's discovery of nuclear physics, the Cockroft-Oliphant discovery of anomalous low-energy fusion reactions and the chemist Hahn's discovery of fission had to be included. Using gaseous atmosphere or discharges between palladium targets, rather significant results were seen e.g. from the "life after death" heat production of such high values per host atom that only nuclear reactions can be involved. This supports the earlier evaluation of neutron generation in fully reversible experiments with gas discharges hinting that a reasonable screening effect - preferably in the swimming electron layer - may lead to reactions at nuclear distances d of picometers with reaction probability times U of about megaseconds similar to the K-shell capture radioactivity. Further electrolytic experiments led to low-energy nuclear reactions (LENR) where the involvement of pollution could be excluded from the appearance of very seldom rare earth elements. A basically new theory for DD cross-sections is used to confirm the picometer-megasecond reactions of cold fusion. Other theoretical aspects are given from measured heavy element distributions similar to the standard abundance distribution, SAD, in the Universe with consequences on endothermic heavy nuclei generation, magic numbers and to quark-gluon plasmas.

  7. Low-energy nuclear reactions resulting as parametric interactions with similarity to K-shell electron capture

    International Nuclear Information System (INIS)

    Hora, H.; Miley, G.H.; Li, X.Z.; Kelly, J.C.; Osman, F.

    2006-01-01

    Since the appeal by Brian Josephson at the meeting of the Nobel Laureates July 2004, it seems to be indicated to summarize the following serious, reproducible and confirmed observations on reactions of protons of deuterons incorporated in host metals such as palladium. Some reflections to Rutherford's discovery of nuclear physics, the Cockcroft Oliphant discovery of anomalous low-energy fusion reactions and the chemist Hahn's discovery of fission had to be included. Using gaseous atmosphere or discharges between palladium targets, rather significant results were seen e.g. from the 'life after death' heat production of such high values per host atom that only nuclear reactions can be involved. This supports the earlier evaluation of neutron generation in fully reversible experiments with gas discharges hinting that a reasonable screening effect - preferably in the swimming electron layer - may lead to reactions at nuclear distances d of pico-meters with reaction probability times U of about mega-seconds similar to the K-shell capture radioactivity. Further electrolytic experiments led to low-energy nuclear reactions (LENR) where the involvement of pollution could be excluded from the appearance of very seldom rare earth elements. A basically new theory for DD cross-sections is used to confirm the pico-meter- mega-second reactions of cold fusion. Other theoretical aspects are given from measured heavy element distributions similar to the standard abundance distribution, SAD, in the Universe with consequences on endothermic heavy nuclei generation, magic numbers and to quark-gluon plasmas. (authors)

  8. From the nuclear stalemate to a nuclear-weapon free world. In memory of Klaus Fuchs; Vom atomaren Patt zu einer von Atomwaffen freien Welt. Zum Gedenken an Klaus Fuchs

    Energy Technology Data Exchange (ETDEWEB)

    Flach, Guenter; Fuchs-Kittowski, Klaus (eds.)

    2012-07-01

    The following topics were dealt with: The first soviet atomic bomb and Klaus Fuchs, in illusory worlds of Andrei Sakharov, Edward Teller, and Klaus Fuchs, Klaus Fuchs as grandfather of the hydrogen bomb, memories of and thinking about Klaus Fuchs, the Scottish years of Klaus Fuchs 1937-1941, Klaus Fuchs in the mirror of the Venona documents, Gernot Zippe and the ultracentrifuge or east-west technology transfer in the cold war, secret impulses for the soviet nuclear project, responsibility of knowledge with anti-facism, philosophy, and science as well as peace as the first human right in the work of Klaus Fuchs, the request of Klaus Fuchs for a lasting peace, Klaus Fuchs in Daniel Granin's roman ''Escape to Russia'', ways to a nuclear-weapon free world, Otto Hahn and the declarations of Mainau and Goettingen, nuclear winter, initiatives of the GDR for the prohibition of weapons of mass destruction, nuclear weapons in negative entropy, militarism and antimilitarism of the nuclear age, contributions of the young Klaus Fuchs to statistical physics, nuclear disarmament and the peaceful use of nuclear energy, the responsibility of the scientists for a socially effective and efficient energy change, Berlin-Bucher contributions to a world free of biological weapons. (HSI)

  9. Nanolayers with advanced properties for superconducting nanoelectronics

    International Nuclear Information System (INIS)

    Prepelita, A.; Zdravkov, V.; Morari, R.; Socrovisciuc, A.; Antropov, E.; Sidorenko, A.

    2011-01-01

    Full text: Elaborated advanced technology for superconducting spintronics - technological process, based on magnetron sputtering of the metallic films with non-metallic protective layers, yields significant improvement in superconducting properties of thin Nb films and Nb/CuNi nanostructures in comparison with common methods of films deposition. The developed advanced technological process is patented (Patent RM number 175 from 31.03.2010). First experimental observation of the double re-entrant superconductivity in superconductor/ ferromagnetic nanostructures (Nb/Cu 41 Ni 59 bilayers) in dependence on the thickness of the ferromagnetic layer (Published in : A.S. Sidorenko, V.I. Zdravkov, J. Kehrle, R.Morari, E.Antropov, G. Obermeier, S. Gsell, M. Schreck, C. Muller, V.V. Ryazanov, S. Horn, R. Tidecks, L.R. Tagirov. Extinction and recovery of superconductivity by interference in superconductor/ferromagnet bilayers. In: Nanoscale Phenomena . Fundamentals and Applications,Ed. by H.Hahn, A.Sidorenko, I.Tiginyanu, Springer, 2009 p.1-10. Perspectives of applications: design of a new generation of superconducting spintronic devices - high frequency operating superconducting spin-switch for telecommunication and computers. (author)

  10. Evaluation of tumoral enhancement by superparamagnetic iron oxide particles: comparative studies with ferumoxtran and anionic iron oxide nanoparticles

    International Nuclear Information System (INIS)

    Brillet, P-Y.; Gazeau, F.; Luciani, A.; Bessoud, B.; Cuenod, C.-A.; Siauve, N.; Pons, J.-N.; Poupon, J.; Clement, O.

    2005-01-01

    This study was designed to compare tumor enhancement by superparamagnetic iron oxide particles, using anionic iron oxide nanoparticles (AP) and ferumoxtran. In vitro, relaxometry and media with increasing complexity were used to assess the changes in r2 relaxivity due to cellular internalization. In vivo, 26 mice with subcutaneously implanted tumors were imaged for 24 h after injection of particles to describe kinetics of enhancement using T1 spin echo, T2 spin echo, and T2 fast spin echo sequences. In vitro, the r2 relaxivity decreased over time (0-4 h) when AP were uptaken by cells. The loss of r2 relaxivity was less pronounced with long (Hahn Echo) than short (Carr-Purcell-Meiboom-Gill) echo time sequences. In vivo, our results with ferumoxtran showed an early T2 peak (1 h), suggesting intravascular particles and a second peak in T1 (12 h), suggesting intrainterstitial accumulation of particles. With AP, the late peak (24 h) suggested an intracellular accumulation of particles. In vitro, anionic iron oxide nanoparticles are suitable for cellular labeling due to a high cellular uptake. Conversely, in vivo, ferumoxtran is suitable for passive targeting of tumors due to a favorable biodistribution. (orig.)

  11. Dielectronic recombination theory

    International Nuclear Information System (INIS)

    LaGattuta, K.J.

    1991-01-01

    A theory now in wide use for the calculation of dielectronic recombination cross sections (σ DR ) and rate coefficients (α DR ) was one introduced originally by Feshbach for nuclear physics applications, and then later adapted for atomic scattering problems by Hahn. In the following, we briefly review this theory in a very general form, which allows one to account for the effects of overlapping and interacting resonances, as well as continuum-continuum coupling. An extension of our notation will then also allow for the inclusion of the effects of direct radiative recombination, along with a treatment of the interference between radiative and dielectronic recombination. Other approaches to the calculation of σ DR have been described by Fano and by Seaton. We will not consider those theories here. Calculations of α DR have progressed considerably over the last 25 years, since the early work of Burgess. Advances in the reliability of theoretical predictions have also been promoted recently b a variety of direct laboratory measurements of σ DR . While the measurements of σ DR for δn ≠ 0 excitations have tended to agree very well with calculations, the case of δn = 0 has been much problematic. However, by invoking a mechanism originally proposed by Jacobs, which takes into account the effect of stray electric fields on high Rydberg states (HRS) participating in the DR process, new calculations have improved the agreement between theory and experiment for these cases. Nevertheless, certain discrepancies still remain

  12. Algunos problemas de interpretación en la teoría de precios de producción de Piero Sraffa

    Directory of Open Access Journals (Sweden)

    Guillén Romo Hector

    1981-12-01

    Full Text Available Aunque con el término "escuela neo-ricardiana" o "escuela de Cambridge" algunas veces se designa a las contribuciones de Joan Robinson, Nicholas Kaldor, Luigi Pasínetti y algunos otros á la teoría del crecimiento, en este ensayo nos referiremos casi exclusivamente a la teoría neo-ricardíana de los precios, tal y como ha sido elaborada por Piero Sraffa. Los fundamentos metodológicos de la escuela neo-ricardiana
    pueden ser encontrados en las obras de V. K. Dimitriev y L. Bortkiewicz, autores de finales del Siglo XIX e inicios del XX. La importancia de estos autores se ha visto particularmente incrementada en los últimos años, tras la publicación de la obra de Sraffa. La escuela neo-ricardiana puede ser analizada desde varios puntos de vista según que se consideren sus vínculos con la teoría marxista del valor o con la teoría neoclásica, ya sea en su versión vulgar (Jevons, Menger, Marshall o en su versión del equilibrio económico general (Arrow, Hahn, Malinvaud.

  13. Teenage experiments contaminate suburban property

    International Nuclear Information System (INIS)

    Lall, P.; Jensen, L.; Mitchell, J.; Sass, W.; Skowronek, R.; Minnaar, D.

    1999-01-01

    In August 1994, 18-year-old David Hahn (David) was detained by police in Clinton Township, Michigan. When the police searched his car, they discovered a locked tool box and other containers that David said contained radioactive materials resulting from experiments he had conducted with the radioactive materials from, primarily, consumer products. From the ages 14 to 18, David spent his spare time at his Union Lake, Michigan, home attempting to concentrate, bum, chemically alter, and experiment with: the thorium from hundreds of lantern mantles, radium from various luminescent sources and clock dials, americium from smoke detector sources, and radioactive materials from natural ores. In the process, he had contaminated a wooden shed in his backyard and his bedroom, and exposed himself. In 1995, EPA, their emergency response contractor, and the Michigan Department of Public Health (MDPH) performed an emergency assessment and removal at the property. The response and removal were conducted cost-effectively and generated approximately 10 cubic yards of radioactive waste. (author)

  14. Development of suitable plastic standards for X-ray fluorescence analysis

    Energy Technology Data Exchange (ETDEWEB)

    Mans, Christian [University of Applied Sciences Muenster, Department of Chemical Engineering, Advanced Analytical Chemistry, Stegerwaldstr. 39, 48565 Steinfurt (Germany)], E-mail: c.mans@fh-muenster.de; Hanning, Stephanie [University of Applied Sciences Muenster, Department of Chemical Engineering, Advanced Analytical Chemistry, Stegerwaldstr. 39, 48565 Steinfurt (Germany)], E-mail: hanning@fh-muenster.de; Simons, Christoph [University of Applied Sciences Muenster, Department of Chemical Engineering, Advanced Analytical Chemistry, Stegerwaldstr. 39, 48565 Steinfurt (Germany)], E-mail: simons@fh-muenster.de; Wegner, Anne [University of Applied Sciences Muenster, Department of Chemical Engineering, Advanced Analytical Chemistry, Stegerwaldstr. 39, 48565 Steinfurt (Germany)], E-mail: awegner@fh-muenster.de; Janssen, Anton [University of Applied Sciences Muenster, Department of Chemical Engineering, Advanced Analytical Chemistry, Stegerwaldstr. 39, 48565 Steinfurt (Germany)], E-mail: janssena@fh-muenster.de; Kreyenschmidt, Martin [University of Applied Sciences Muenster, Department of Chemical Engineering, Advanced Analytical Chemistry, Stegerwaldstr. 39, 48565 Steinfurt (Germany)], E-mail: martin.kreyenschmidt@fh-muenster.de

    2007-02-15

    For the adoption of the EU directive 'Restriction on use of certain Hazardous Substances' and 'Waste Electrical and Electronic Equipment' using X-ray fluorescence analysis suitable standard materials are required. Plastic standards based on acrylonitrile-butadiene-styrene terpolymer, containing the regulated elements Br, Cd, Cr, Hg and Pb were developed and produced as granulates and solid bodies. The calibration materials were not generated as a dilution from one master batch but rather the element concentrations were distributed over nine independent calibration samples. This was necessary to enable inter-elemental corrections and empirical constant mass absorption coefficients. The produced standard materials are characterized by a homogenous element distribution, which is more than sufficient for X-ray fluorescence analysis. Concentrations for all elements except for Br could be determined by Inductively Coupled Plasma Atomic Emission Spectroscopy after microwave assisted digestion. The concentration of Br was determined by use of Neutron Activation Analysis at Hahn-Meitner-Institute in Berlin, Germany. The correlation of the X-ray fluorescence analysis measurements with the values determined using Inductively Coupled Plasma Atomic Emission Spectroscopy and Neutron Activation Analysis showed a very good linearity.

  15. Static strain aging of Zircaloy-2: the effect of dislocation dynamics on yielding behaviour

    International Nuclear Information System (INIS)

    Thorpe, W.R.; Smith, I.O.

    1981-01-01

    The static strain-aging response of Zircaloy-2 was determined in the temperature range 293-723 K. A modified Hahn yielding model was found to provide a satisfactory description of the magnitude and shape of the yield points after aging, thereby providing information about the mobile dislocation density and the dislocation generation rate. For example, the characteristic double peak in the temperature dependence of strain aging was simplified to a single broad minimum in the mobile dislocation density over the temperature interval 500-700 K. The shape of the yield point was also found to be temperature dependent; the yield drop became less sharp at test temperatures above 648 K. This was ascribed to the inhibition of dislocation multiplication by dynamic strain aging. A kinetic law was developed by applying Snoek ordering kinetics to the process of dislocation locking and the resultant change in mobile dislocation density was then used to predict the strain-aging response as a function of aging time. The stress dependence of strain aging at 573 K was investigated at aging stresses of between 0.07 and 0.975 of the flow stress sigmasub(f). The strain-aging response increased for aging at stresses between 0.07sigmassub(f) and 0.8sigmasub(f), whereafter it declined steeply to the limit of zero at the flow stress. (Auth.)

  16. Biology of the rabbit.

    Science.gov (United States)

    Brewer, Nathan R

    2006-01-01

    In recognition of Dr. Nathan Brewer's many years of dedicated service to AALAS and the community of research animal care specialists, the premier issue of JAALAS includes the following compilation of Dr. Brewer's essays on rabbit anatomy and physiology. These essays were originally published in the ASLAP newsletter (formerly called Synapse), and are reprinted here with the permission and endorsement of that organization. I would like to thank Nina Hahn, Jane Lacher, and Nancy Austin for assistance in compiling these essays. Publishing this information in JAALAS allows Dr. Brewer's work to become part of the searchable literature for laboratory animal science and medicine and also assures that the literature references and information he compiled will not be lost to posterity. However, readers should note that this material has undergone only minor editing for style, has not been edited for content, and, most importantly, has not undergone peer review. With the agreement of the associate editors and the AALAS leadership, I elected to forego peer review of this work, in contradiction to standard JAALAS policy, based on the status of this material as pre-published information from an affiliate organization that holds the copyright and on the esteem in which we hold for Dr. Brewer as a founding father of our organization.

  17. Solving the relativistic Rankine-Hugoniot condition in the presence of a magnetic field in the astrophysical scenario of a neutron star

    International Nuclear Information System (INIS)

    Mallick, Ritam

    2011-01-01

    The Rankine-Hugoniot condition has been solved to study phase transition in an astrophysical scenario mainly in the case of phase transition from a neutron star (NS) to a quark star (QS). The equations of state and temperature play a huge role in determining the nature of the front propagation, which brings about the phase transition in a NS. The shock jump conditions can be solved analytically, but the situation changes drastically by the inclusion of the magnetic field. High magnetic fields, which are always associated with a NS play a huge role in determining the structure and evolution of a NS. So, a magnetic field has been introduced in the shock jump condition in the de Hoffmann-Teller frame. The modified conservation condition for the perpendicular and oblique shocks is obtained in this frame. Numerical solution of the perpendicular shock has been obtained, which shows considerable deviation from the nonmagnetic case. The results show that the magnetic field helps in shock generation. It also indirectly hints at the instability of the matter and thereby the NS for very high magnetic field, implying that NSs can only support a magnetic field of some finite strength.

  18. Analysis of heart rate and oxygen uptake kinetics studied by two different pseudo-random binary sequence work rate amplitudes.

    Science.gov (United States)

    Drescher, U; Koschate, J; Schiffer, T; Schneider, S; Hoffmann, U

    2017-06-01

    The aim of the study was to compare the kinetics responses of heart rate (HR), pulmonary (V˙O 2 pulm) and predicted muscular (V˙O 2 musc) oxygen uptake between two different pseudo-random binary sequence (PRBS) work rate (WR) amplitudes both below anaerobic threshold. Eight healthy individuals performed two PRBS WR protocols implying changes between 30W and 80W and between 30W and 110W. HR and V˙O 2 pulm were measured beat-to-beat and breath-by-breath, respectively. V˙O 2 musc was estimated applying the approach of Hoffmann et al. (Eur J Appl Physiol 113: 1745-1754, 2013) considering a circulatory model for venous return and cross-correlation functions (CCF) for the kinetics analysis. HR and V˙O 2 musc kinetics seem to be independent of WR intensity (p>0.05). V˙O 2 pulm kinetics show prominent differences in the lag of the CCF maximum (39±9s; 31±4s; p<0.05). A mean difference of 14W between the PRBS WR amplitudes impacts venous return significantly, while HR and V˙O 2 musc kinetics remain unchanged. Copyright © 2017 Elsevier B.V. All rights reserved.

  19. Impact of water supply, domiciliary water reservoirs and sewage on faeco-orally transmitted parasitic diseases in children residing in poor areas in Juiz de Fora, Brazil.

    Science.gov (United States)

    Teixeira, J C; Heller, L

    2006-08-01

    The objectives of this study were to characterize faeco-orally transmitted parasitic diseases and to identify the factors associated with these diseases, with emphasis on environmental factors, in children ranging from 1 up to 5 years old residing in substandard settlement areas. A population-based cross-sectional epidemiological design was used in a non-random selection of 29 out of the 78 substandard settlement areas in the municipality of Juiz de Fora, Brazil. A sample of 753 children were assessed from the target population consisting of all children of the appropriate age range residing in the selected areas. Data were collected by means of domiciliary interviews with their mothers or with the person responsible for them. The Hoffmann-Pons-Janer method was used in the parasitological examination of faeces. Binary logistic regression models were used to identify the factors associated with the diseases. A total of 319 sample children presented faeco-orally transmitted parasitic diseases. The factors associated with these parasitic diseases included the children's age, family income, number of dwellers in the domicile, consumption of water from shallow wells, consumption of water from natural sources, absence of covered domiciliary water reservoirs, and the presence of sewage flowing in the street.

  20. Environmental impact of almond crop in strong slope with two vegetable covers: bush and leguminous; Impacto en el medio ambiente del cultivo de almendros en fuertes pendientes con dos cubiertas vegetales: Matorral y Leguminosa

    Energy Technology Data Exchange (ETDEWEB)

    Carceles Rodriguez, B.; Francia Martinez, J. R.; Martinez Raya, A.

    2009-07-01

    Soil erosion is one of the main physical processes of land degradation in Spain. Several studies in the Mediterranean environment have demonstrated the positive effect of vegetation covers on the reduction of water erosion and their indirect improvement of the soil physical and chemical properties, essentially by the incorporation of organic matter. Sol loss and surface runoff patterns over a four-year period were monitors in erosion plots from hill slope with two different cover-crop strips: (1) non-tillage with leguminous (Lens esculenta Moench) and (2) non-tillage with and a mixture of autochthonous thymes (Thymus baeticus Boiss. ex Lacaita, Thymus capitatus (L) Hoffmanns and Link., Thymus vulgaris L.) of 3 m with, in Lanjaron (Granada) on the south flank of the Sierra Nevada of southeast Spain. The erosion plots were located on the hill slope at 35% incline, at 580 m in altitude and with 144 m{sup 2} (24 m x 6 m) in area. the area selected for the experiment is the part of the rainfed orchard given entirely with almond (Prunus amygdalus Basch cv. Desmayo Largueta) trees, the planting gird were 6 x 7 m. (Author) 10 refs.