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Sample records for su1 jonathan jiang1

  1. SU(2) and SU(1,1) squeezing of interacting radiation modes

    International Nuclear Information System (INIS)

    Abdalla Sebawe, M.; Faisal El-Orany, A.A.; Perina, J.

    2000-01-01

    In this communication we discuss SU(1,1) and SU(2) squeezing of an interacting system of radiation modes in a quadratic medium in the framework of Lie algebra. We show that regardless of which state being initially considered, squeezing can be periodically generated. (authors)

  2. The Historical Thought of Jiang Mengyin

    Institute of Scientific and Technical Information of China (English)

    于文杰[1; Xu Sangyi[2

    2016-01-01

    Jiang Mengyin (蒋孟引) (1907–1988), originally named Jiang Deheng (蒋德恒), also known as Baihuan (百幻),was a renowned Chinese historian. He was born in 1907 at Changping Village, Gaoqiao Town, Xinning County, Hunan Province. Studying in an old–style private school in his youth, Jiang showed his talents and special interests in history, as he frequently discussed historical issues with his tutor and formulated his own opinions. He then took historical research as his life–long pursuit. In 1928, Jiang was enrolled in the Department of History at National Central University.

  3. Path integrals and coherent states of SU(2) and SU(1,1)

    CERN Document Server

    Inomata, Akira; Kuratsuji, Hiroshi

    1992-01-01

    The authors examine several topical subjects, commencing with a general introduction to path integrals in quantum mechanics and the group theoretical backgrounds for path integrals. Applications of harmonic analysis, polar coordinate formulation, various techniques and path integrals on SU(2) and SU(1, 1) are discussed. Soluble examples presented include particle-flux system, a pulsed oscillator, magnetic monopole, the Coulomb problem in curved space and others.The second part deals with the SU(2) coherent states and their applications. Construction and generalization of the SU(2) coherent sta

  4. Infinite statistics and the SU(1, 1) phase operator

    International Nuclear Information System (INIS)

    Gerry, Christopher C

    2005-01-01

    A few years ago, Agarwal (1991 Phys. Rev. A 44 8398) showed that the Susskind-Glogower phase operators, expressible in terms of Bose operators, provide a realization of the algebra for particles obeying infinite statistics. In this paper we show that the SU(1, 1) phase operators, constructed in terms of the elements of the su(1, 1) Lie algebra, also provide a realization of the algebra for infinite statistics. There are many realizations of the su(1, 1) algebra in terms of single or multimode bose operators, three of which are discussed along with their corresponding phase states. The Susskind-Glogower phase operator is a special case of the SU(1, 1) phase operator associated with the Holstein-Primakoff realization of su(1, 1). (letter to the editor)

  5. New hierarchy in GUTs based on SU(n,1)/SU(n)U(1) SUGRA

    International Nuclear Information System (INIS)

    Hayashi, M.J.; Murayama, Akihiro

    1985-01-01

    Grand unified theories (GUTs) in the framework of SU(n, 1)/SU(n) x U(1) supergravity are discussed which naturally generate a new hierarchy, Msub(P) (Planck mass): Msub(X) (GUT scale):msub(3/2) (gravitino mass):m (explicit supersymmetry breaking scale)=1:epsilon:epsilon 3 :epsilon 5 α(Msub(X)) with Msub(P) as the only input mass scale. The SUSY breaking scale m is expected to be fixed radiatively as mproportionalMsub(W), i.e., epsilonproportional10 -3 . Our method would be applicable to any GUT based on SU(n, 1)/SU(n) x U(1) supergravity. (orig.)

  6. Entropy of entangled states and SU(1,1) and SU(2) symmetries

    International Nuclear Information System (INIS)

    Santana, A.E.; Khanna, F.C.; Revzen, M.

    2002-01-01

    Based on a recent definition of a measure for entanglement [Plenio and Vedral, Contemp. Phys. 39, 431 (1998)], examples of maximum entangled states are presented. The construction of such states, which have symmetry SU(1,1) and SU(2), follows the guidance of thermofield dynamics formalism

  7. Vector coherent state representations of SO5 contains SU2 + SU2 contains U1 + U1 and SO5 contains U1 + U1

    International Nuclear Information System (INIS)

    Pan Feng

    1991-01-01

    VCS representations of SO 5 contains SU 2 + SU 2 contains U 1 + U 1 and SO 5 contains U 1 + U 1 are discussed. Reduced matrix elements for SO 5 contains SU 2 + SU 2 are derived. The multiplicity of a weight for SO 5 is determined by using the K-matrix technique

  8. On Euclidean connections for su(1,1), suq(1,1) and the algebraic approach to scattering

    International Nuclear Information System (INIS)

    Ionescu, R.A.

    1994-11-01

    We obtain a general Euclidean connection for su(1,1) and suq(1,1) algebras. Our Euclidean connection allows an algebraic derivation for the S matrix. These algebraic S matrices reduce to the known ones in suitable circumstances. Also, we obtain a map between su(1,1) and su q (1,1) representations. (author). 8 refs

  9. Metaproteomics of Microbiota in Naturally Fermented Soybean Paste, Da-jiang.

    Science.gov (United States)

    Zhang, Ping; Zhang, Pengfei; Xie, Mengxi; An, Feiyu; Qiu, Boshu; Wu, Rina

    2018-05-01

    Da-jiang is a typical traditional fermented soybean product in China. At present, the proteins in da-jiang are needed to be explored. The composition and species of microbial proteins in traditional fermented da-jiang were analyzed by metaproteomics based on sodium dodecyl sulfonate-polyacrylamide gel electrophoresis (SDS-PAGE) and liquid chromatography-mass spectrometry/mass spectrometry (LC-MS/MS). The results showed that the number and variety of microbial proteins in the traditional fermented da-jiang from different regions were different. The production site influences the fermentation in da-jiang. Then we analyzed the functions of the microbial proteins identified in da-jiang, and found that they were mainly involved in the process of protein synthesis, glycometabolism and nucleic acid synthesis. In addtion, we compared the proteins composition in different da-jiang. There are 51 common proteins of naturally fermented da-jiang, and 25 common microbial sources. The main commonly microbial sources of fungal proteins are Saccharomyces cerevisiae and Schizosaccharomyces; the main commonly microbial sources of bacterial proteins are Enterococcus faecalis, Leuconostoc mesenteroides, Acinetobacter baumannii, and Bacillus subtilis. These common microbes play the predominant role in da-jiang fermentation. The present results help us to understand the fermentation of da-jiang and improve the quality and safety of final products in the future. The study illustrated metaproteome of microbiota in traditional fermented soybean paste, da-jiang, by sodium dodecyl sulfonate-polyacrylamide gel electrophoresis (SDS-PAGE) and liquid chromatography-mass spectrometry/mass spectrometry (LC-MS/MS). A method of extracting metaproteome from microbiota in da-jiang was attempted. The findings help to understand the fermentation of da-jiang and improve the quality and safety of da-jiang in fermented industry. © 2018 Institute of Food Technologists®.

  10. Jonathan Sladen (1957-2009)

    CERN Multimedia

    2009-01-01

    We deeply regret to announce the death of Mr Jonathan Sladen on 19 May 2009. Mr Sladen, who was born on 9 February 1957, was a member of the BE Department and had worked at CERN since 1985. The Director-General has sent his family a message of condolence on behalf of the CERN personnel. Social Affairs Human Resources Department Jonathan made outstanding contributions to the success of the LEP collider. The fast timing system he developed for synchronizing the LEP RF system performed unfailingly and with excellent precision throughout the lifetime of the accelerator. He was a highly motivated member of the LEP RF team, participating enthusiastically in the huge task of maintaining the RF system in a state of peak operational availability for physics. He contributed to many important performance enhancements which allowed LEP to reach such high energies. Later in his career Jonathan took responsibility for the low level RF system of the CLIC Test Facility. Here he...

  11. Unitary relation for the time-dependent SU(1,1) systems

    International Nuclear Information System (INIS)

    Song, Dae-Yup

    2003-01-01

    The system whose Hamiltonian is a linear combination of the generators of SU(1,1) group with time-dependent coefficients is studied. It is shown that there is a unitary relation between the system and a system whose Hamiltonian is simply proportional to the generator of the compact subgroup of SU(1,1). The unitary relation is described by the classical solutions of a time-dependent (harmonic) oscillator. Making use of the relation, the wave functions satisfying the Schroedinger equation are given, for a general unitary representation, in terms of the matrix elements of a finite group transformation (Bargmann function). The wave functions of the harmonic oscillator with an inverse-square potential is studied in detail, and it is shown that through an integral, the model provides a way of deriving the Bargmann function for the representation of positive discrete series of SU(1,1)

  12. Coherent states related with SU(N) and SU(N,1) groups

    International Nuclear Information System (INIS)

    Gitman, D.M.; Shelepin, A.L.

    1990-01-01

    The basis of coherent state (CS) for symmetric presentations of groups SU(N) and SU(N,1) is plotted, its properties being investigated. Evolution of CS is considered. Relation between CS of groups SU(N) and Glauber is ascertained

  13. Coherent states for a polynomial su(1, 1) algebra and a conditionally solvable system

    International Nuclear Information System (INIS)

    Sadiq, Muhammad; Inomata, Akira; Junker, Georg

    2009-01-01

    In a previous paper (2007 J. Phys. A: Math. Theor. 40 11105), we constructed a class of coherent states for a polynomially deformed su(2) algebra. In this paper, we first prepare the discrete representations of the nonlinearly deformed su(1, 1) algebra. Then we extend the previous procedure to construct a discrete class of coherent states for a polynomial su(1, 1) algebra which contains the Barut-Girardello set and the Perelomov set of the SU(1, 1) coherent states as special cases. We also construct coherent states for the cubic algebra related to the conditionally solvable radial oscillator problem.

  14. SU(3)_C× SU(2)_L× U(1)_Y( × U(1)_X ) as a symmetry of division algebraic ladder operators

    Science.gov (United States)

    Furey, C.

    2018-05-01

    We demonstrate a model which captures certain attractive features of SU(5) theory, while providing a possible escape from proton decay. In this paper we show how ladder operators arise from the division algebras R, C, H, and O. From the SU( n) symmetry of these ladder operators, we then demonstrate a model which has much structural similarity to Georgi and Glashow's SU(5) grand unified theory. However, in this case, the transitions leading to proton decay are expected to be blocked, given that they coincide with presumably forbidden transformations which would incorrectly mix distinct algebraic actions. As a result, we find that we are left with G_{sm} = SU(3)_C× SU(2)_L× U(1)_Y / Z_6. Finally, we point out that if U( n) ladder symmetries are used in place of SU( n), it may then be possible to find this same G_{sm}=SU(3)_C× SU(2)_L× U(1)_Y / Z_6, together with an extra U(1)_X symmetry, related to B-L.

  15. The effect of losses on the quantum-noise cancellation in the SU(1,1) interferometer

    International Nuclear Information System (INIS)

    Xin, Jun; Wang, Hailong; Jing, Jietai

    2016-01-01

    Quantum-noise cancellation (QNC) is an effective method to control the noise of the quantum system, which reduces or even eliminates the noise of the quantum systems by utilizing destructive interference in the quantum system. However, QNC can be extremely dependent on the losses inside the system. In this letter, we experimentally and theoretically study how the losses can affect the QNC in the SU(1,1) interferometer. We find that losses in the different arms inside the SU(1,1) interferometer can have different effects on the QNC in the output fields from the SU(1,1) interferometer. And the QNC in the SU(1,1) interferometer can almost be insensitive to the losses in some cases. Our findings may find its potential applications in the quantum noise control.

  16. The effect of losses on the quantum-noise cancellation in the SU(1,1) interferometer

    Energy Technology Data Exchange (ETDEWEB)

    Xin, Jun; Wang, Hailong [State Key Laboratory of Precision Spectroscopy, School of Physics and Materials Science, East China Normal University, Shanghai 200062 (China); Jing, Jietai, E-mail: jtjing@phy.ecnu.edu.cn [State Key Laboratory of Precision Spectroscopy, School of Physics and Materials Science, East China Normal University, Shanghai 200062 (China); Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan, Shanxi 030006 (China)

    2016-08-01

    Quantum-noise cancellation (QNC) is an effective method to control the noise of the quantum system, which reduces or even eliminates the noise of the quantum systems by utilizing destructive interference in the quantum system. However, QNC can be extremely dependent on the losses inside the system. In this letter, we experimentally and theoretically study how the losses can affect the QNC in the SU(1,1) interferometer. We find that losses in the different arms inside the SU(1,1) interferometer can have different effects on the QNC in the output fields from the SU(1,1) interferometer. And the QNC in the SU(1,1) interferometer can almost be insensitive to the losses in some cases. Our findings may find its potential applications in the quantum noise control.

  17. SU(N,1) inflation

    International Nuclear Information System (INIS)

    Ellis, J.; Enqvist, K.; Nanopoulos, D.V.; Olive, K.A.; Srednicki, M.

    1985-01-01

    We present a simple model for primordial inflation in the context of SU(N, 1) no-scale n=1 supergravity. Because the model at zero temperature very closely resembles global supersymmetry, minima with negative cosmological constants do not exist, and it is easy to have a long inflationary epoch while keeping density perturbations of the right magnitude and satisfying other cosmological constraints. We pay specific attention to satisfying the thermal constraint for inflation, i.e. the existence of a high temperature minimum at the origin. (orig.)

  18. Quantum SU(2|1) supersymmetric Calogero-Moser spinning systems

    Science.gov (United States)

    Fedoruk, Sergey; Ivanov, Evgeny; Lechtenfeld, Olaf; Sidorov, Stepan

    2018-04-01

    SU(2|1) supersymmetric multi-particle quantum mechanics with additional semi-dynamical spin degrees of freedom is considered. In particular, we provide an N=4 supersymmetrization of the quantum U(2) spin Calogero-Moser model, with an intrinsic mass parameter coming from the centrally-extended superalgebra \\widehat{su}(2\\Big|1) . The full system admits an SU(2|1) covariant separation into the center-of-mass sector and the quotient. We derive explicit expressions for the classical and quantum SU(2|1) generators in both sectors as well as for the total system, and we determine the relevant energy spectra, degeneracies, and the sets of physical states.

  19. PT symmetry and a dynamical realization of the SU(1, 1) algebra

    Science.gov (United States)

    Banerjee, Rabin; Mukherjee, Pradip

    2016-01-01

    We show that the elementary modes of the planar harmonic oscillator can be quantized in the framework of quantum mechanics based on pseudo-hermitian Hamiltonians. These quantized modes are demonstrated to act as dynamical structures behind a new Jordan-Schwinger realization of the SU(1, 1) algebra. This analysis complements the conventional Jordan-Schwinger construction of the SU(2) algebra based on hermitian Hamiltonians of a doublet of oscillators.

  20. Studies in the syntax of Targum Jonathan to Samuel

    NARCIS (Netherlands)

    Kuty, Renaud Jean

    2008-01-01

    This doctoral dissertation consists of a linguistic study of the Aramaic of Targum Jonathan. Targum Jonathan (and its twin Targum Onqelos) is a paraphrastic translation of the Hebrew Bible into Aramaic. Although it is usually recognized that it reached its final shape in Babylonia in the early

  1. On the unitarity of string propagation on SU(1,1)

    International Nuclear Information System (INIS)

    Mohammedi, N.

    1989-12-01

    We discuss the consistency (unitarity) of string propagation on the non-compact group SU(1,1) x G c and find the restrictions on the level of the Kac-Moody algebra for this propagation to be unitary. We also suggest some modifications to the Virasoro generators and obtain a manifestly unitary string theory. (author). 10 refs

  2. The SU(1, 1) Perelomov number coherent states and the non-degenerate parametric amplifier

    Energy Technology Data Exchange (ETDEWEB)

    Ojeda-Guillén, D., E-mail: dojedag@ipn.mx; Granados, V. D. [Escuela Superior de Física y Matemáticas, Instituto Politécnico Nacional, Ed. 9, Unidad Profesional Adolfo López Mateos, C.P. 07738 México D. F. (Mexico); Mota, R. D. [Escuela Superior de Ingeniería Mecánica y Eléctrica, Unidad Culhuacán, Instituto Politécnico Nacional, Av. Santa Ana No. 1000, Col. San Francisco Culhuacán, Delegación Coyoacán, C.P. 04430, México D. F. (Mexico)

    2014-04-15

    We construct the Perelomov number coherent states for an arbitrary su(1, 1) group operation and study some of their properties. We introduce three operators which act on Perelomov number coherent states and close the su(1, 1) Lie algebra. By using the tilting transformation we apply our results to obtain the energy spectrum and eigenfunctions of the non-degenerate parametric amplifier. We show that these eigenfunctions are the Perelomov number coherent states of the two-dimensional harmonic oscillator.

  3. More flipped SU(5) x U(1) baryosynthesis

    Energy Technology Data Exchange (ETDEWEB)

    Ellis, J.; Hagelin, J.S.; Nanopoulos, D.V.; Olive, K.A.

    1988-06-30

    We supplement a previous discussion of baryosynthesis in flipped SU(5)xU(1) GUTs by including (1) the large incoherent field energy density which is likely when SU(5) is broken, and (2) the possibility of additional Higgs triplet fields suggested by four-dimensional string model-building. We consider strong (weak) reheating scenarios in which the Universe is (is not) SU(5) symmetric after inflation. We find an adequate baryon asymmetry subsequent to strong reheating, whatever the number of Higgs triplets (although beware of possible difficulties with quasi-stable relic particles), whereas weak reheating requires at least two Higgs triplets.

  4. Flipped SU(5) times U(1) in superconformal models

    Energy Technology Data Exchange (ETDEWEB)

    Bailin, D.; Katechou, E.K. (Sussex Univ., Brighton (United Kingdom). School of Mathematical and Physical Sciences); Love, A. (London Univ. (United Kingdom))

    1992-01-10

    This paper reports that flipped SU(5) {times} U(1) models are constructed in the framework of tensoring of N = 2 superconformal minimal models quotiented by discrete symmetries. Spontaneous breaking of flipped SU(5) {times} U(1) and extra U(1) factors in the gauge group along F-flat directions of the effective potential is studied.

  5. SU(1,1) coherent states for Dirac–Kepler–Coulomb problem in D+1 dimensions with scalar and vector potentials

    Energy Technology Data Exchange (ETDEWEB)

    Ojeda-Guillén, D., E-mail: dogphysics@gmail.com [Escuela Superior de Física y Matemáticas, Instituto Politécnico Nacional, Ed. 9, Unidad Profesional Adolfo López Mateos, C.P. 07738, México D.F. (Mexico); Mota, R.D. [Escuela Superior de Ingeniería Mecánica y Eléctrica, Unidad Culhuacán, Instituto Politécnico Nacional, Av. Santa Ana No. 1000, Col. San Francisco Culhuacán, Delegación Coyoacán, C.P. 04430, México D.F. (Mexico); Granados, V.D. [Escuela Superior de Física y Matemáticas, Instituto Politécnico Nacional, Ed. 9, Unidad Profesional Adolfo López Mateos, C.P. 07738, México D.F. (Mexico)

    2014-08-14

    We decouple the Dirac's radial equations in D+1 dimensions with Coulomb-type scalar and vector potentials through appropriate transformations. We study each of these uncoupled second-order equations in an algebraic way by using an su(1,1) algebra realization. Based on the theory of irreducible representations, we find the energy spectrum and the radial eigenfunctions. We construct the Perelomov coherent states for the Sturmian basis, which is the basis for the unitary irreducible representation of the su(1,1) Lie algebra. The physical radial coherent states for our problem are obtained by applying the inverse original transformations to the Sturmian coherent states. - Highlights: • We solve the most general Dirac–Kepler–Coulomb problem. • The eigenfunctions and energy spectrum are obtained in a purely algebraic way. • We construct the radial SU(1,1) coherent states for the Kepler–Coulomb problem.

  6. SU(1,1) coherent states for Dirac–Kepler–Coulomb problem in D+1 dimensions with scalar and vector potentials

    International Nuclear Information System (INIS)

    Ojeda-Guillén, D.; Mota, R.D.; Granados, V.D.

    2014-01-01

    We decouple the Dirac's radial equations in D+1 dimensions with Coulomb-type scalar and vector potentials through appropriate transformations. We study each of these uncoupled second-order equations in an algebraic way by using an su(1,1) algebra realization. Based on the theory of irreducible representations, we find the energy spectrum and the radial eigenfunctions. We construct the Perelomov coherent states for the Sturmian basis, which is the basis for the unitary irreducible representation of the su(1,1) Lie algebra. The physical radial coherent states for our problem are obtained by applying the inverse original transformations to the Sturmian coherent states. - Highlights: • We solve the most general Dirac–Kepler–Coulomb problem. • The eigenfunctions and energy spectrum are obtained in a purely algebraic way. • We construct the radial SU(1,1) coherent states for the Kepler–Coulomb problem

  7. SU(1,2) invariance in two-dimensional oscillator

    Energy Technology Data Exchange (ETDEWEB)

    Krivonos, Sergey [Bogoliubov Laboratory of Theoretical Physics,Joint Institute for Nuclear Research, 141980 Dubna (Russian Federation); Nersessian, Armen [Yerevan State University,1 Alex Manoogian St., Yerevan, 0025 (Armenia); Tomsk Polytechnic University,Lenin Ave. 30, 634050 Tomsk (Russian Federation)

    2017-02-01

    Performing the Hamiltonian analysis we explicitly established the canonical equivalence of the deformed oscillator, constructed in arXiv:1607.03756, with the ordinary one. As an immediate consequence, we proved that the SU(1,2) symmetry is the dynamical symmetry of the ordinary two-dimensional oscillator. The characteristic feature of this SU(1,2) symmetry is a non-polynomial structure of its generators written in terms of the oscillator variables.

  8. Static forces in d=2+1 SU(N) gauge theories

    International Nuclear Information System (INIS)

    Meyer, H.B.

    2006-07-01

    Using a three-level algorithm we perform a high-precision lattice computation of the static force up to 1fm in the 2+1 dimensional SU(5) gauge theory. Discretization errors and the continuum limit are discussed in detail. By comparison with existing SU(2) and SU(3) data it is found that σr 2 0 =1.65-(π)/(24) holds at an accuracy of 1% for all N≥2, where r 0 is the Sommer reference scale. The effective central charge c(r) is obtained and an intermediate distance r s is defined via the property c(r s )=(π)/(24). It separates in a natural way the short-distance regime governed by perturbation theory from the long-distance regime described by an effective string theory. The ratio τ s /τ 0 decreases significantly from SU(2) to SU(3) to SU(5), where r s 0 . We give a preliminary estimate of its value in the large-N limit. The static force in the smallest representation of N-ality 2, which tends to the k=2 string tension as r→∞, is also computed up to 0.7 fm. The deviation from Casimir scaling is positive and grows from 0.1% to 1% in that range. (Orig.)

  9. Entanglement criteria via the uncertainty relations in su(2) and su(1,1) algebras: Detection of non-Gaussian entangled states

    International Nuclear Information System (INIS)

    Nha, Hyunchul; Kim, Jaewan

    2006-01-01

    We derive a class of inequalities, from the uncertainty relations of the su(1,1) and the su(2) algebra in conjunction with partial transposition, that must be satisfied by any separable two-mode states. These inequalities are presented in terms of the su(2) operators J x =(a † b+ab † )/2, J y =(a † b-ab † )/2i, and the total photon number a +N b >. They include as special cases the inequality derived by Hillery and Zubairy [Phys. Rev. Lett. 96, 050503 (2006)], and the one by Agarwal and Biswas [New J. Phys. 7, 211 (2005)]. In particular, optimization over the whole inequalities leads to the criterion obtained by Agarwal and Biswas. We show that this optimal criterion can detect entanglement for a broad class of non-Gaussian entangled states, i.e., the su(2) minimum-uncertainty states. Experimental schemes to test the optimal criterion are also discussed, especially the one using linear optical devices and photodetectors

  10. Bulb turbine operating at medium head: XIA JIANG case study

    Science.gov (United States)

    Loiseau, F.; Desrats, C.; Petit, P.; Liu, J.

    2012-11-01

    With lots of references for 4-blade bulb turbines, such as these of Wu Jin Xia (4 units - 36.1 MW per unit - 9.2 m rated head), Chang Zhou (15 units - 46.7 MW per unit - 9.5 m rated head) and Tong Wan (4 units - 46.2 MW per unit - 11 m rated head), ALSTOM Power Hydro is one of the major suppliers of bulb turbines operating under medium head for the Chinese market. ALSTOM Power Hydro has been awarded in November 2010 a contract by Jiang Xi Province Xia Jiang Water Control Project Headquarters to equip Xia Jiang's new hydropower plant. The power dam is located on the Gan Jiang river, at about 160 km away from Nan Chang town in South Eastern China. The supply will consist in 5 bulb units including the furniture of both the turbine and its generator, for a total capacity of 200 MW, under a rated net head of 8.6 m. The prototype turbine is a 7.8 m diameter runner, rotating at 71.4 rpm speed. For this project, ALSTOM has proposed a fully new design of 4-blade bulb runner. This paper outlines the main steps of the hydraulic development. First of all, a fine tuning of the blade geometry was performed to enhance the runner behaviour at high loads and low heads, so that to fulfill the demanding requirements of efficiencies and maximum output. The challenge was also to keep an excellent cavitation behaviour, especially at the outer blade diameter in order to avoid cavitation erosion on the prototype. The shape of the blade was optimized by using the latest tools in computational fluid dynamics. Steady state simulations of the distributor and the runner were performed, in order to simulate more accurately the pressure fields on the blade and the velocity distribution at the outlet of the runner. Moreover, draft tube computations have been performed close to the design point and at higher loads. Then, a model fully homologous with the prototype was manufactured and tested at ALSTOM's laboratory in Grenoble (France). The model test results confirmed the predicted ones: the

  11. Laughing Out Loud with Jonathan Coe: A Conversation

    OpenAIRE

    Guignery, Vanessa

    2016-01-01

    This conversation with Jonathan Coe took place at the École Normale Supérieure de Lyon on 15 October 2015. Part of the discussion focuses on Coe’s fictional production and part of it draws from essays included in Marginal Notes, Doubtful Statements. Non-Fiction, 1990-2013, a collection which contains pieces about such comic or satirical writers as Henry Fielding, Jonathan Swift, Laurence Sterne, B.S. Johnson, Alasdair Gray and David Nobbs, as well as musicians and film directors. The book com...

  12. Baryon number generation in a flipped SU(5) x U(1) model

    International Nuclear Information System (INIS)

    Campbell, B.; Hagelin, J.; Nanopoulos, D.V.; Olive, K.A.

    1988-01-01

    We consider the possibilities for generating a baryon asymmetry in the early universe in a flipped SU(5) x U(1) model inspired by the superstring. Depending on the temperature of the radiation background after inflation we can distinguish between two scenarios for baryogenesis: (1) After reheating the original SU(5) x U(1) symmetry is restored, or there was no inflation at all; (2) reheating after inflation is rather weak and SU(5) x U(1) is broken. In either case the asymmetry is generated by the out-of-equilibrium decays of a massive SU(3) x SU(2) x U(1) singlet field φ m . In the flipped SU(5) x U(1) model, gauge symmetry breaking is triggered by strong coupling phenomena, and is in general accompanied by the production of entropy. We examine constraints on the reheating temperature and the strong coupling scale in each of the scenarios. (orig.)

  13. 78 FR 69663 - Jonathan and Jayne Chase Troy Mills Hydroelectric Inc.; Notice of Transfer of Exemption

    Science.gov (United States)

    2013-11-20

    ... Jayne Chase Troy Mills Hydroelectric Inc.; Notice of Transfer of Exemption 1. By letter filed October 15, 2013, Jonathan Chase informed the Commission that the exemption from licensing for the Troy Hydroelectric Project, FERC No. 13381, originally issued December 2, 2011,\\1\\ has been transferred to Troy Mills...

  14. An su(1, 1) algebraic approach for the relativistic Kepler-Coulomb problem

    International Nuclear Information System (INIS)

    Salazar-Ramirez, M; Granados, V D; MartInez, D; Mota, R D

    2010-01-01

    We apply the Schroedinger factorization method to the radial second-order equation for the relativistic Kepler-Coulomb problem. From these operators we construct two sets of one-variable radial operators which are realizations for the su(1, 1) Lie algebra. We use this algebraic structure to obtain the energy spectrum and the supersymmetric ground state for this system.

  15. Bulb turbine operating at medium head: XIA JIANG case study

    International Nuclear Information System (INIS)

    Loiseau, F; Desrats, C; Petit, P; Liu, J

    2012-01-01

    With lots of references for 4-blade bulb turbines, such as these of Wu Jin Xia (4 units – 36.1 MW per unit – 9.2 m rated head), Chang Zhou (15 units – 46.7 MW per unit – 9.5 m rated head) and Tong Wan (4 units – 46.2 MW per unit – 11 m rated head), ALSTOM Power Hydro is one of the major suppliers of bulb turbines operating under medium head for the Chinese market. ALSTOM Power Hydro has been awarded in November 2010 a contract by Jiang Xi Province Xia Jiang Water Control Project Headquarters to equip Xia Jiang's new hydropower plant. The power dam is located on the Gan Jiang river, at about 160 km away from Nan Chang town in South Eastern China. The supply will consist in 5 bulb units including the furniture of both the turbine and its generator, for a total capacity of 200 MW, under a rated net head of 8.6 m. The prototype turbine is a 7.8 m diameter runner, rotating at 71.4 rpm speed. For this project, ALSTOM has proposed a fully new design of 4-blade bulb runner. This paper outlines the main steps of the hydraulic development. First of all, a fine tuning of the blade geometry was performed to enhance the runner behaviour at high loads and low heads, so that to fulfill the demanding requirements of efficiencies and maximum output. The challenge was also to keep an excellent cavitation behaviour, especially at the outer blade diameter in order to avoid cavitation erosion on the prototype. The shape of the blade was optimized by using the latest tools in computational fluid dynamics. Steady state simulations of the distributor and the runner were performed, in order to simulate more accurately the pressure fields on the blade and the velocity distribution at the outlet of the runner. Moreover, draft tube computations have been performed close to the design point and at higher loads. Then, a model fully homologous with the prototype was manufactured and tested at ALSTOM's laboratory in Grenoble (France). The model test results confirmed the predicted

  16. 1-Bromoethene-1-sulfonyl fluoride (BESF) is another good connective hub for SuFEx click chemistry.

    Science.gov (United States)

    Smedley, Christopher J; Giel, Marie-Claire; Molino, Andrew; Barrow, Andrew S; Wilson, David J D; Moses, John E

    2018-05-25

    We demonstrate 1,2-dibromoethane-1-sulfonyl fluoride (DESF) as a bench-stable and readily accessible precursor to the robust SuFEx connector, 1-bromoethene-1-sulfonyl fluoride (BESF). The in situ generation of BESF from DESF opens up several new reaction profiles, including application in the syntheses of unprecedented 3-substituted isoxazole-5-sulfonyl fluorides, 1-substituted-1H-1,2,3-triazole-4-sulfonyl fluorides, 2-amino-1-bromoethane-1-sulfonyl fluorides and 4-bromo-β-sultams in good to excellent yields. These new modules comprise a pendant sulfonyl fluoride handle, which further undergoes facile and selective SuFEx reactions with a selection of aryl silyl ethers to generate stable and useful sulfonate connections.

  17. Reflections on Jonathan Boston's Paper

    Science.gov (United States)

    Devine, Nesta

    2014-01-01

    In this article, Nesta Devine responds to Jonathan Boston's article "Child Poverty in New Zealand: Why It Matters and How It Can Be Reduced" ("Educational Philosophy and Theory," v46 n9 p995-999, 2014). Devine wishes to consider Boston's position from two angles: one is to rehearse the point that these statistics are an…

  18. Superstring sigma models from spin chains: the SU(1,1 vertical bar 1) case

    International Nuclear Information System (INIS)

    Bellucci, S.; Casteill, P.-Y.; Morales, J.F.

    2005-01-01

    We derive the coherent state representation of the integrable spin chain Hamiltonian with non-compact supersymmetry group G=SU(1,1 vertical bar 1). By passing to the continuous limit, we find a spin chain sigma model describing a string moving on the supercoset G/H, H being the stabilizer group. The action is written in a manifestly G-invariant form in terms of the Cartan forms and the string coordinates in the supercoset. The spin chain sigma model is shown to agree with that following from the Green-Schwarz action describing two-charged string spinning on AdS 5 xS 5

  19. Semidirect product gauge group [SU(3)cxSU(2)L]xU(1)Y and quantization of hypercharge

    International Nuclear Information System (INIS)

    Hattori, Chuichiro; Matsunaga, Mamoru; Matsuoka, Takeo

    2011-01-01

    In the standard model the hypercharges of quarks and leptons are not determined by the gauge group SU(3) c xSU(2) L xU(1) Y alone. We show that, if we choose the semidirect product group [SU(3) c xSU(2) L ]xU(1) Y as its gauge group, the hyperchages are settled to be n/6 mod Z(n=0,1,3,4). In addition, the conditions for gauge-anomaly cancellation give strong constraints. As a result, the ratios of the hypercharges are uniquely determined and the gravitational anomaly is automatically canceled. The standard charge assignment to quarks and leptons can be properly reproduced. For exotic matter fields their hypercharges are also discussed.

  20. SU(5) x U(1) phenomenology: Theorems on neutral-current analysis

    International Nuclear Information System (INIS)

    Zee, A.; Kim, J.E.

    1980-01-01

    We embed the SU(5) unified theory of Georgi and Glashow in a U(5) theory. This may result from the breaking of an SU(N), N>5, theory or of a GL(5,c) theory. At low energy this leads to an SU(2) x U(1) x U(1) electroweak theory. We show that, with a suitable choice of Higgs representations, the predictions of this theory for neutral-current experiments are characterized by three parameters. For appropriate values of these parameters, the predictions are practically indistinguishable from the standard SU(2) x U(1) theory. Certain theorems on the analysis of neutral-current interactions are proved. (Section V is independent for readers who are interested only in the theorems.) More accurate neutral-current measurement might answer the question of whether SU(5) x U(1) is relevant. Possible verification of the present electroweak theory can result from (roughly) an order suppression relative to the standard prediction on the asymmetries in e + e - → μ + μ - and discovery of two Z bosons around 90 --100 GeV. GL(n,c) gauge theories are formulated in the Appendix

  1. Phosphorylation of SU(VAR3-9 by the chromosomal kinase JIL-1.

    Directory of Open Access Journals (Sweden)

    Joern Boeke

    2010-04-01

    Full Text Available The histone methyltransferase SU(VAR3-9 plays an important role in the formation of heterochromatin within the eukaryotic nucleus. Several studies have shown that the formation of condensed chromatin is highly regulated during development, suggesting that SU(VAR3-9's activity is regulated as well. However, no mechanism by which this may be achieved has been reported so far. As we and others had shown previously that the N-terminus of SU(VAR3-9 plays an important role for its activity, we purified interaction partners from Drosophila embryo nuclear extract using as bait a GST fusion protein containing the SU(VAR3-9 N-terminus. Among several other proteins known to bind Su(VAR3-9 we isolated the chromosomal kinase JIL-1 as a strong interactor. We show that SU(VAR3-9 is a substrate for JIL-1 in vitro as well as in vivo and map the site of phosphorylation. These findings may provide a molecular explanation for the observed genetic interaction between SU(VAR3-9 and JIL-1.

  2. Super-resolution and ultra-sensitivity of angular rotation measurement based on SU(1,1) interferometers using homodyne detection

    Science.gov (United States)

    Liu, Jun; Li, Shitao; Wei, Dong; Gao, Hong; Li, Fuli

    2018-02-01

    We theoretically explore the angular rotation measurement sensitivity of SU(1,1) interferometers with a coherent beam and a vacuum beam input by using orbital angular momentum (OAM). Compared with the OAM in an SU(2) interferometer, the SU(1,1) interferometer employing homodyne detection can further surpass the angular rotation shot noise limit \\tfrac{1}{2l\\sqrt{N}} and improve the resolution and sensitivity of angular rotation measurement. Two models are considered, one is that OAM is carried by a probe beam and the other one is a pump beam with the OAM. The sensitivity can be improved by higher OAM and nonlinear process with a large gain. The resolution can be enhanced in the case that the pump beam has OAM. Moreover, we present a brief discussion on the variation of resolution and sensitivity in the presence of photon loss.

  3. SU(2 and SU(1,1 Approaches to Phase Operators and Temporally Stable Phase States: Applications to Mutually Unbiased Bases and Discrete Fourier Transforms

    Directory of Open Access Journals (Sweden)

    Maurice R. Kibler

    2010-07-01

    Full Text Available We propose a group-theoretical approach to the generalized oscillator algebra Aκ recently investigated in J. Phys. A: Math. Theor. 2010, 43, 115303. The case κ ≥ 0 corresponds to the noncompact group SU(1,1 (as for the harmonic oscillator and the Pöschl-Teller systems while the case κ < 0 is described by the compact group SU(2 (as for the Morse system. We construct the phase operators and the corresponding temporally stable phase eigenstates for Aκ in this group-theoretical context. The SU(2 case is exploited for deriving families of mutually unbiased bases used in quantum information. Along this vein, we examine some characteristics of a quadratic discrete Fourier transform in connection with generalized quadratic Gauss sums and generalized Hadamard matrices.

  4. Strongly coupled SU(2v boson and LEP1 versus LEP2

    Directory of Open Access Journals (Sweden)

    M. Bilenky

    1993-10-01

    Full Text Available If new strong interactions exist in the electroweak bosonic sector (e.g., strong Higgs sector, dynamical electroweak breaking, etc., it is natural to expect new resonances, with potentially strong couplings. We consider an additional vector-boson triplet, V+-, V0, associated with an SU(2v local symmetry under the specific (but rather natural assumption that ordinary fermions are SU(2v singlets. Mixing of the V triplet with the W+-, Z0 bosons effectively leads to an SU(2L×U(1Y violating vector-boson-fermion interaction which is strongly bounded by LEP1 data. In contrast, the potentially large deviation of the Z0W+W- coupling from its SU(2L×U(1Y value is hardly constrained by LEP1 data. Results from experiments with direct access to the trilinear Z0W+W− coupling (LEP200, NLC are urgently needed.

  5. SU(4) x U(1) gauge theory. II. CP nonconservation

    International Nuclear Information System (INIS)

    Deshpande, N.G.; Hwa, R.C.; Mannheim, P.D.

    1979-01-01

    We exploit the higher symmetry inherent in an SU(4) x U(1) gauge theory to construct a spontaneously broken theory of CP nonconservation. Higgs multiplets in the adjoint representation of SU(4) contain both even and odd CP fields; thus, requiring the simultaneous nonvanishing of the vacuum expectation values of these fields leads to CP noninvariance of the vacuum. We find that all the CP-nonconserving effects are mediated in our theory by the superheavy gauge bosons of the broken SU(4) x U(1) symmetry. In fact, the very existence of CP violation sets an upper limit on the masses of these bosons. In our model the dominant CP effect lies in the neutral kaon system and is found to arise through a direct (ΔS = 2) K 1 -K 2 transition. The model has all the features of a superweak theory, with a neutron electric dipole moment substantially smaller than 10 -24 e cm

  6. Kateedrid ja katedraalid / Jonathan Wolff ; interv. Jüri Lipping

    Index Scriptorium Estoniae

    Wolff, Jonathan

    2005-01-01

    Vestlus tuntud poliitikafilosoofi Jonathan Wolffiga. Huvi tekkimine poliitilise mõtlemise vastu, poliitilise filosoofia traditsioonidest, poliitiline liberalism, analüütiline filosoofia, ajaloo suurnimed

  7. RETRACTED: Relationship between the ACE I/D gene polymorphism and T1DN susceptibility/risk of T1DM developing into T1DN in the Caucasian population.

    Science.gov (United States)

    Zhou, Tian-Biao; Guo, Xue-Feng; Jiang, Zongpei; Li, Hong-Yan

    2015-12-01

    The following article has been included in a multiple retraction: Tian-Biao Zhou, Xue-Feng Guo, Zongpei Jiang, and Hong-Yan Li Relationship between the ACE I/D gene polymorphism and T1DN susceptibility/risk of T1DM developing into T1DN in the Caucasian population Journal of Renin-Angiotensin-Aldosterone System 1470320314563425, first published on February 1, 2015 doi: 10.1177/1470320314563425 This article has been retracted at the request of the Editors and the Publisher. After conducting a thorough investigation, SAGE found that the submitting authors of a number of papers published in the Journal of the Renin-Angiotensin Aldosterone System ( JRAAS) (listed below) had supplied fabricated contact details for their nominated reviewers. The Editors accepted these papers based on the reports supplied by the individuals using these fake reviewer email accounts. After concluding that the peer review process was therefore seriously compromised, SAGE and the journal Editors have decided to retract all affected articles. Online First articles (these articles will not be published in an issue) Wenzhuang Tang, Tian-Biao Zhou, and Zongpei Jiang Association of the angiotensinogen M235T gene polymorphism with risk of diabetes mellitus developing into diabetic nephropathy Journal of Renin-Angiotensin-Aldosterone System 1470320314563426, first published on December 18, 2014 doi: 10.1177/1470320314563426 Tian-Biao Zhou, Hong-Yan Li, Zong-Pei Jiang, Jia-Fan Zhou, Miao-Fang Huang, and Zhi-Yang Zhou Role of renin-angiotensin-aldosterone system inhibitors in radiation nephropathy Journal of Renin-Angiotensin-Aldosterone System 1470320314563424, first published on December 18, 2014 doi: 10.1177/1470320314563424 Weiqiang Zhong, Zongpei Jiang, and Tian-Biao Zhou Association between the ACE I/D gene polymorphism and T2DN susceptibility: The risk of T2DM developing into T2DN in the Asian population Journal of Renin-Angiotensin-Aldosterone System 1470320314566019, first published on January

  8. Weak mixing angle and the SU(3)CxSU(3) model on M4xS1/(Z2xZ'2)

    International Nuclear Information System (INIS)

    Li Tianjun; Wei Liao

    2002-05-01

    We show that the desirable weak mixing angle sin 2 θ W =0.2312 at m Z scale can be generated naturally in the SU(3) C xSU(3) model on M 4 xS 1 /(Z 2 x Z 2 ') where the gauge symmetry SU(3) is broken down to SU(2) L xU(1) Y by orbifold projection. For a supersymmetric model with a TeV scale extra dimension, the SU(3) unification scale is about hundreds of TeVs at which the gauge couplings for SU(3) C and SU(3) can also be equal in the mean time. For the non-supersymmetric model, SU(2) L xU(1) Y are unified at order of 10 TeV. These models may serve as good candidates for physics beyond the SM or MSSM. (author)

  9. The finite - dimensional star and grade star irreducible representation of SU(n/1)

    International Nuclear Information System (INIS)

    Han Qi-zhi.

    1981-01-01

    We derive the conditions of star and grade star representations of SU(n/1) and give some examples of them. We also give a brief review of the finite - dimensional irreducible representations of SU(n/1). (author)

  10. Flipped SU(5)xU(1){sub X} models from F-theory

    Energy Technology Data Exchange (ETDEWEB)

    Jiang Jing [Department of Physics, University of Wisconsin, Madison, WI 53706 (United States); Li Tianjun, E-mail: tjli@physics.rutgers.ed [George P. and Cynthia W. Mitchell Institute for Fundamental Physics, Texas A and M University, College Station, TX 77843 (United States); Key Laboratory of Frontiers in Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing 100190 (China); Nanopoulos, Dimitri V. [George P. and Cynthia W. Mitchell Institute for Fundamental Physics, Texas A and M University, College Station, TX 77843 (United States); Astroparticle Physics Group, Houston Advanced Research Center (HARC), Mitchell Campus, Woodlands, TX 77381 (United States); Academy of Athens, Division of Natural Sciences, 28 Panepistimiou Avenue, Athens 10679 (Greece); Xie Dan [George P. and Cynthia W. Mitchell Institute for Fundamental Physics, Texas A and M University, College Station, TX 77843 (United States)

    2010-05-01

    We systematically construct flipped SU(5)xU(1){sub X} models without and with bulk vector-like particles from F-theory. To realize the decoupling scenario, we introduce sets of vector-like particles in complete SU(5)xU(1) multiplets at the TeV scale, or at the intermediate scale, or at the TeV scale and high scale. To avoid the Landau pole problem for the gauge couplings, we can only introduce five sets of vector-like particles around the TeV scale. These vector-like particles can couple to the Standard Model singlet fields, and obtain suitable masses by Higgs mechanism. We study gauge coupling unification in detail. We show that the U(1){sub X} flux contributions to the gauge couplings preserve the SU(5)xU(1){sub X} gauge coupling unification. We calculate the SU(3){sub C}xSU(2){sub L} unification scales, and the SU(5)xU(1){sub X} unification scales and unified couplings. In most of our models, the high-scale or bulk vector-like particles can be considered as string-scale threshold corrections since their masses are close to the string scale. Furthermore, we discuss the phenomenological consequences of our models. In particular, in the models with TeV-scale vector-like particles, the vector-like particles can be observed at the Large Hadron Collider, the proton decay is within the reach of the future Hyper-Kamiokande experiment, the lightest CP-even Higgs boson mass can be increased, the hybrid inflation can be naturally realized, and the correct cosmic primordial density fluctuations can be generated.

  11. SU(n)c x SU(m)L x U(1)N generalizations of the standard model

    International Nuclear Information System (INIS)

    Pleitez, V.

    1993-01-01

    Generalizations of the Standard Model which are based on the gauge symmetry SU(n) c x SU(m) L x U(1) N are considered. Although the most interesting possibility occurs when n = 3, it will be considered also the cases n = 4,5, both with m = 3,4. It will also be given possible grand unification scenarios. (author). 18 refs

  12. Some comments on flipped SU(5) times U(1) and flipped unification in general

    Energy Technology Data Exchange (ETDEWEB)

    Barr, S.M. (Bartol Research Institute, University of Delaware, Newark, Delaware 19716 (US))

    1989-10-01

    A general group-theoretical discussion of flipped embeddings is given. In addition to the well-known flipped SU(5) and flipped SO(10), the existence of flipped E{sub 6} and E{sub 7} is shown, as well as several families and special cases of flipped embeddings. A possible physical reason, essentially based on the group theory of flipped embeddings, why nature prefers the low-energy group SU(3){times}SU(2){times}U(1) to alternatives such as SU(4){times}U(1) and SU(5) is pointed out.

  13. Some comments on flipped SU(5)xU(1) and flipped unification in general

    International Nuclear Information System (INIS)

    Barr, S.M.

    1989-01-01

    A general group-theoretical discussion of flipped embeddings is given. In addition to the well-known flipped SU(5) and flipped SO(10), the existence of flipped E 6 and E 7 is shown, as well as several families and special cases of flipped embeddings. A possible physical reason, essentially based on the group theory of flipped embeddings, why nature prefers the low-energy group SU(3)xSU(2)xU(1) to alternatives such as SU(4)xU(1) and SU(5) is pointed out

  14. New SU(1,1) position-dependent effective mass coherent states for a generalized shifted harmonic oscillator

    International Nuclear Information System (INIS)

    Yahiaoui, Sid-Ahmed; Bentaiba, Mustapha

    2014-01-01

    A new SU(1,1) position-dependent effective mass coherent states (PDEM CS) related to the shifted harmonic oscillator (SHO) are deduced. This is accomplished by applying a similarity transformation to the generally deformed oscillator algebra (GDOA) generators for PDEM systems and a new set of operators that close the su(1,1) Lie algebra are constructed, being the PDEM CS of the basis for its unitary irreducible representation. From the Lie algebra generators, we evaluate the uncertainty relationship for a position and momentum-like operators in the PDEM CS and show that it is minimized in the sense of Barut–Girardello CS. We prove that the deduced PDEM CS preserve the same analytical form than those of Glauber states. As an illustration of our procedure, we depicted the 2D-probability density in the PDEM CS for SHO with the explicit form of the mass distribution with no singularities. (paper)

  15. Closing the SU(3)LxU(1)X symmetry at the electroweak scale

    International Nuclear Information System (INIS)

    Dias, Alex G.; Montero, J. C.; Pleitez, V.

    2006-01-01

    We show that some models with SU(3) C xSU(3) L xU(1) X gauge symmetry can be realized at the electroweak scale and that this is a consequence of an approximate global SU(2) L+R symmetry. This symmetry implies a condition among the vacuum expectation value of one of the neutral Higgs scalars, the U(1) X 's coupling constant, g X , the sine of the weak mixing angle sinθ W , and the mass of the W boson, M W . In the limit in which this symmetry is valid it avoids the tree level mixing of the Z boson of the standard model with the extra Z ' boson. We have verified that the oblique T parameter is within the allowed range indicating that the radiative corrections that induce such a mixing at the 1-loop level are small. We also show that a SU(3) L+R custodial symmetry implies that in some of the models we have to include sterile (singlets of the 3-3-1 symmetry) right-handed neutrinos with Majorana masses, since the seesaw mechanism is mandatory to obtain light active neutrinos. Moreover, the approximate SU(2) L+R subset of SU(3) L+R symmetry implies that the extra nonstandard particles of these 3-3-1 models can be considerably lighter than it had been thought before so that new physics can be really just around the corner

  16. Naturally light neutrinos in the flipped SU(5)xU(1) superstring model

    Energy Technology Data Exchange (ETDEWEB)

    Antoniadis, I.; Rizos, J. (Centre de Physique Theorique, Ecole Polytechnique, 91 - Palaiseau (France)); Tamvakis, K. (Physics Dept., Univ. Ioannina (Greece))

    1992-04-16

    We analyze the SU(5)xU(1)'xU(1){sup 4}xSO(10)xSU(4) superstring model, taking into account non-renormalizable superpotential interactions up to sixth order, and find that all neutrinos stay naturally light within the experimental mass bounds. (orig.).

  17. General displaced SU(1, 1) number states: Revisited

    Energy Technology Data Exchange (ETDEWEB)

    Dehghani, A., E-mail: alireza.dehghani@gmail.com, E-mail: a-dehghani@tabrizu.ac.ir [Physics Department, Payame Noor University, P.O. Box 19395-3697 Tehran (Iran, Islamic Republic of)

    2014-04-15

    The most general displaced number states, based on the bosonic and an irreducible representation of the Lie algebra symmetry of su(1, 1) and associated with the Calogero-Sutherland model are introduced. Here, we utilize the Barut-Girardello displacement operator instead of the Klauder-Perelomov counterpart, to construct new kind of the displaced number states which can be classified in nonlinear coherent states regime, too, with special nonlinearity functions. They depend on two parameters, and can be converted into the well-known Barut-Girardello coherent and number states, respectively, depending on which of the parameters equal to zero. A discussion of the statistical properties of these states is included. Significant are their squeezing properties and anti-bunching effects which can be raised by increasing the energy quantum number. Depending on the particular choice of the parameters of the above scenario, we are able to determine the status of compliance with flexible statistics. Major parts of the issue is spent on something that these states, in fact, should be considered as new kind of photon-added coherent states, too. Which can be reproduced through an iterated action of a creation operator on new nonlinear Barut-Girardello coherent states. Where the latter carry, also, outstanding statistical features.

  18. California: 'the Stem Cell State'. Interview with Jonathan Thomas.

    Science.gov (United States)

    Thomas, Jonathan

    2011-11-01

    We talked to Jonathan Thomas, newly elected Chairman of the California Institute for Regenerative Medicine (CIRM), a few weeks into a role he describes as "the opportunity of the lifetime" to find out what he sees as the key goals for the CIRM and why patient advocates are so critical to the future of the Institute. Jonathan Thomas was elected as Chairman of the California Institute for Regenerative Medicine (CIRM) in June 2011, succeeding the Founder and former Chairman, Bob Klein. Thomas has had a successful career in finance and law and is a Co-Founding Partner at Saybrook Capital, an investment banking and private equity firm. His commitment to patient advocacy and keen interest in biological sciences, developed as a Biology Major at Yale, led him to stand for Chairman.

  19. Zhong et al., Afr J Tradit Complement Altern Med. (2014) 11(1):1-14

    African Journals Online (AJOL)

    cadewumi

    Yunqing Zhong*1, Xiufeng Wang2, Guanglan Xu,1, Bing Mao3, Wei Zhou3, Jie Min3, Hongli Jiang3, Xiang Diao4 , ..... due to COPD exacerbations, and 1 experienced a cerebrovascular accident. ..... the body (Makino T., 2005b; Hong et al., 2011). ... An, X., Zhang, A.L., Yang, A.W., Lin, L., Wu, D., Guo, X., Shergis, J.L., Thien, ...

  20. Testable flipped SU(5)xU(1){sub X} models

    Energy Technology Data Exchange (ETDEWEB)

    Jiang Jing [Institute of Theoretical Science, University of Oregon, Eugene, OR 97403 (United States); Li Tianjun [George P. and Cynthia W. Mitchell Institute for Fundamental Physics, Texas A and M University, College Station, TX 77843 (United States) and Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing 100080 (China) and Department of Physics and Astronomy, Rutgers University, Piscataway, NJ 08854 (United States)]. E-mail: tjli@physics.rutgers.edu; Nanopoulos, Dimitri V. [George P. and Cynthia W. Mitchell Institute for Fundamental Physics, Texas A and M University, College Station, TX 77843 (United States); Astroparticle Physics Group, Houston Advanced Research Center (HARC), Mitchell Campus, Woodlands, TX 77381 (United States); Academy of Athens, Division of Natural Sciences, 28 Panepistimiou Avenue, Athens 10679 (Greece)

    2007-06-11

    The little hierarchy between the GUT scale and the string scale may give us some hints that can be tested at the LHC. To achieve string-scale gauge coupling unification, we introduce additional vector-like particles. We require that these vector-like particles be standard, form complete GUT multiplets, and have masses around the TeV scale or close to the string scale. Interestingly, only the flipped SU(5)xU(1){sub X} models can work elegantly. We consider all possible sets of vector-like particles with masses around the TeV scale. And we introduce vector-like particles with masses close to the string scale which can mimic the string-scale threshold corrections. We emphasize that all of these vector-like particles can be obtained in the interesting flipped SU(5)xU(1){sub X} string models from the four-dimensional free fermionic string construction. Assuming the low-energy supersymmetry, high-scale supersymmetry, and split supersymmetry, we show that the string-scale gauge coupling unification can indeed be achieved in the flipped SU(5)xU(1){sub X} models. These models can be tested at the LHC by observing simple sets of vector-like particles at the TeV scale. Moreover, we discuss a simple flipped SU(5)xU(1){sub X} model with string-scale gauge coupling unification and high-scale supersymmetry by introducing only one pair of the vector-like particles at the TeV scale, and we predict the corresponding Higgs boson masses. Also, we briefly comment on the string-scale gauge coupling unification in the model with low-energy supersymmetry by introducing only one pair of the vector-like particles at the intermediate scale. And we briefly comment on the mixings among the SM fermions and the corresponding extra vector-like particles.

  1. SU(3) limit of the IBM as a 1/N expansion

    International Nuclear Information System (INIS)

    Kuyucak, S.; Morrison, I.

    1990-01-01

    The SU(3) limit of the interacting boson model is considered from the perspective of the 1/N expansion. It is shown that truncation of the E2 matrix elements in the spirit of the 1/N expansion and the Mikhailov plots greatly simplifies the complicated exact results and leads to some new insights. A list of E2 transitions among the ground, β and γ bands, both in the SU(3) limit and in more general cases, is given, and some errors in the previous literature are pointed out. 13 refs

  2. Compact versus noncompact quantum dynamics of time-dependent su(1,1)-valued Hamiltonians

    International Nuclear Information System (INIS)

    Penna, V.

    1996-01-01

    We consider the Schroedinger problem for time-dependent (TD) Hamiltonians represented by a linear combination of the compact generator and the hyperbolic generator of su(1,1). Several types of transitions, characterized by different time initial conditions on the generator coefficients, are analyzed by resorting to the harmonic oscillator model with a frequency vanishing for t→+∞. We provide examples that point out how the TD states of the transitions can be constructed either by the compact eigenvector basis or by the noncompact eigenvector basis depending on the initial conditions characterizing the frequency time behavior. Copyright copyright 1996 Academic Press, Inc

  3. Neutrino masses in the flipped SU(5) x U(1) and the SU(4) x O(4) GUT models

    Energy Technology Data Exchange (ETDEWEB)

    Ranfone, S.; Papageorgiu, E.

    1992-03-01

    We classify the different neutrino-mass pattern arising in string-inspired Grand Universal Theory (GUT) and supersymmetric GUT models based on the flipped SU(5)xU(1) and the SU(4)xO(4) gauge groups. Phenomenologically interesting spectra are obtained through the interplay of the two seesaw mechanisms present, with typical neutrino masses {approx}10{sup -3} eV in the supersymmetric GUT models and of order 0.1 - 10 KeV in the ordinary GUTs. (author).

  4. Neutrino masses in the flipped SU(5)xU(1) and the SU(4)xO(4) GUT models

    Energy Technology Data Exchange (ETDEWEB)

    Papageorgiu, E.; Ranfone, S. (Rutherford Appleton Lab., Chilton (United Kingdom))

    1992-05-21

    We classify the different neutrino-mass patterns arising in string-inspired GUT and supersymmetric GUT models based on the flipped SU(5)xU(1) and the SU(4)xO(4) gauge groups. Phenomenologically interesting spectra are obtained through the interplay of the two seesaw mechanisms present, with typical neutrino masses {proportional to}10{sup -3} eV in the supersymmetric GUT models and of order 0.1-10 keV in the ordinary GUTs. (orig.).

  5. SU-8 photoresist and SU-8 based nanocomposites for broadband acoustical matching at 1 GHz

    Energy Technology Data Exchange (ETDEWEB)

    Ndieguene, A; Campistron, P; Carlier, J; Wang, S; Callens-Debavelaere, D; Nongaillard, B, E-mail: Assane.Ndieguene@meletu.univ-valenciennes.f [Univ Lille Nord de France, F-59000 Lille (France)

    2009-11-01

    So as to integrate acoustic functions in BioMEMS using 1 GHz ZnO transducers deposited on silicon substrates, acoustic waves propagation through the silicon substrate and its transmission in water needs to be maximized (the insertion losses at the Si / water interface are about 6dB). In the context of integration, it is interesting for mechanical impedance matching to use photosensitive materials such as SU-8 so that patterns may be obtained. Nanocomposite materials based on SU-8 mixed with nanoparticles having adequate impedances were fabricated. These new materials are characterized in terms of their acoustic velocity, impedance and attenuation. For this, the nanocomposite layers are deposited on the substrate by spin coating to obtain a thickness of about 10 {mu}m, in order to separate acoustic echoes from the material (even if {lambda}/4 layer thickness is lower than 1 {mu}m). The insertion losses of the device immersed in water can be simulated as a function of frequency for a given reflection coefficient between the silicon substrate and the photoresist. The characteristics of some nanocomposites made with SU-8 and various concentrations of nanoparticles like Ti0{sub 2}, SrTiO{sub 3} or W have been determined.

  6. Phase space information in a non-linear quantum system containing a Kerr-like medium through Su(1, 1)-algebraic treatment

    Science.gov (United States)

    Mohamed, Abdel-Baset A.

    2018-05-01

    Analytical description for a Su(2)-quantum system interacting with a damped Su(1, 1)-cavity, which is filled with a non-linear Kerr medium, is presented. The dynamics of non-classicality of Su(1, 1)-state is investigated via the negative part of the Wigner function. We show that the negative part depends on the unitary interaction and the Kerr-like medium and it can be disappeared by increasing the dissipation rate and the detuning parameter. The phase space information of the Husimi function and its Wehrl density is very sensitive not only to the coupling to the environment and the unitary interaction but also to the detuning as well as to the Kerr-like medium. The phase space information may be completely erased by increasing the coupling to the environment. The coherence loss of the Su(2)-state is investigated via the Husimi Wehrl entropy. If the effects of the detuning parameter or/and of the Kerr-like medium are combined with the damping effect, the damping effect of the coupling to the environment may be weaken, and the Wehrl entropy is delayed to reach its steady-state value. At the steady-state value, the phase space information and the coherence are quickly lost.

  7. M1 distributions for {sup 163}Dy and {sup 157}Gd in the SU{sup BF}{sub sdg}(3) and SU{sup BF}{sub sd}(3) x 1g limits of pn-sdgIBFM

    Energy Technology Data Exchange (ETDEWEB)

    Devi, Y.D. [Saha Inst. of Nuclear Physics, Calcutta (India); Kota, V.K.B. [Physical Research Laboratory, Ahmedabad 380 009 (India)

    1996-04-01

    The SU{sup BF}{sub sdg}(3) limit of pn-sdgIBFM, which was developed earlier, is applied with success in analyzing the recently observed M1 data in the {sup 163}Dy nucleus. As new experiments are being planned for {sup 157}Gd nucleus and that {sup 156}Gd is known to be a good SU{sub sd}(3) x 1g nucleus, in the second part of the paper a formalism for M1 distributions in the SU{sup BF}{sub sd}(3) x 1g limit is developed. In both these analytically solvable limiting situations, predictions are made for M1 distributions in the {sup 157}Gd nucleus. (orig.).

  8. Spontaneously broken SU(2) gauge invariance and the ΔI=1/2 rule

    International Nuclear Information System (INIS)

    Shito, Okiyasu

    1977-01-01

    A model of nonleptonic weak interactions is proposed which is based on spontaneously broken SU(2) gauge invariance. The SU(2) group is taken analogously to the U-spin. To this scheme, the source of nonleptonic decays consists of only neutral currents, and violation of strangeness stems from weak vector boson mixings. The model can provide a natural explanation of the ΔI=1/2 rule and of the bulk of the ΔI=1/2 nonleptonic amplitude. As a consequence, a picture is obtained that weak interactions originate in spontaneously broken gauge invariance under orthogonal SU(2) groups. Finally, a possibility of unifying weak and electromagnetic interactions is indicated. (auth.)

  9. A SU(3) x U(1) model for electroweak interactions

    International Nuclear Information System (INIS)

    Pisano, F.; Pleitez, V.

    1992-01-01

    We consider a gauge model based on a SU(3) vector U(1) symmetry in which the lepton number is violated explicitly by charged scalar and gauge boson, including a vector field with double electric charge. (author)

  10. Minimal unitary representation of D(2,1;λ) and its SU(2) deformations and d=1, N=4 superconformal models

    International Nuclear Information System (INIS)

    Govil, Karan; Gunaydin, Murat

    2013-01-01

    Quantization of the geometric quasiconformal realizations of noncompact groups and supergroups leads directly to their minimal unitary representations (minreps). Using quasiconformal methods massless unitary supermultiplets of superconformal groups SU(2,2|N) and OSp(8 ⁎ |2n) in four and six dimensions were constructed as minreps and their U(1) and SU(2) deformations, respectively. In this paper we extend these results to SU(2) deformations of the minrep of N=4 superconformal algebra D(2,1;λ) in one dimension. We find that SU(2) deformations can be achieved using n pair of bosons and m pairs of fermions simultaneously. The generators of deformed minimal representations of D(2,1;λ) commute with the generators of a dual superalgebra OSp(2n ⁎ |2m) realized in terms of these bosons and fermions. We show that there exists a precise mapping between symmetry generators of N=4 superconformal models in harmonic superspace studied recently and minimal unitary supermultiplets of D(2,1;λ) deformed by a pair of bosons. This can be understood as a particular case of a general mapping between the spectra of quantum mechanical quaternionic Kähler sigma models with eight super symmetries and minreps of their isometry groups that descends from the precise mapping established between the 4d, N=2 sigma models coupled to supergravity and minreps of their isometry groups.

  11. Isolamento e caracterização do vírus da influenza pandêmico H1N1 em suínos no Brasil

    Directory of Open Access Journals (Sweden)

    Rejane Schaefer

    2011-09-01

    Full Text Available A infecção causada pelo vírus Influenza A (IAV é endêmica em suínos no mundo inteiro. O surgimento da pandemia de influenza humana pelo vírus A/H1N1 (pH1N1 em 2009 levantou dúvidas sobre a ocorrência deste vírus em suínos no Brasil. Durante o desenvolvimento de um projeto de pesquisa do vírus de influenza suína em 2009-2010, na Embrapa Suínos e Aves (CNPSA, foi detectado em um rebanho de suínos em Santa Catarina, Brasil, um surto de influenza altamente transmissível causado pelo subtipo viral H1N1. Este vírus causou uma doença leve em suínos em crescimento e em fêmeas adultas, sem mortalidade. Tres leitões clinicamente afetados foram eutanasiados. As lesões macroscópicas incluiam consolidação leve a moderada das áreas cranioventrais do pulmão. Microscopicamente, as lesões foram caracterizadas por bronquiolite necrosante obliterativa e pneumonia broncointersticial. A imunohistoquímica, utilizando um anticorpo monoclonal contra a nucleoproteína do vírus influenza A, revelou marcação positiva no núcleo das células epiteliais bronquiolares. O tecido pulmonar de três leitões e os suabes nasais de cinco fêmeas e quatro leitões foram positivos para influenza A pela RT-PCR. O vírus influenza foi isolado de um pulmão, mais tarde sendo confirmado pelo teste de hemaglutinação (título HA 1:128 e por RT-PCR. A análise das seqüências de nucleotídeos dos genes da hemaglutinina (HA e proteína da matriz (M revelou que o vírus isolado foi consistente com o vírus pandêmico A/H1N1/2009 que circulou em humanos no mesmo período. Este é o primeiro relato de um surto de influenza causado pelo vírus pandêmico A/H1N1 em suínos no Brasil.

  12. On the SU(2 vertical stroke 1) WZNW model and its statistical mechanics applications

    Energy Technology Data Exchange (ETDEWEB)

    Saleur, H [CEA Centre d' Etudes de Saclay, 91 - Gif-sur-Yvette (France). Service de Physique Theorique; [University of Southern California, Los Angeles, CA (United States). Dept. of Physics; Schomerus, V [Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany)

    2006-11-15

    Motivated by a careful analysis of the Laplacian on the supergroup SU(2 vertical stroke 1) we formulate a proposal for the state space of the SU(2 vertical stroke 1) WZNW model. We then use properties of sl(2 vertical stroke 1) characters to compute the partition function of the theory. In the special case of level k=1 the latter is found to agree with the properly regularized partition function for the continuum limit of the integrable sl(2 vertical stroke 1)3- anti 3 super-spin chain. Some general conclusions applicable to other WZNW models (in particular the case k=-1/2) are also drawn. (orig.)

  13. Agricultural Exposures, Multiple Myeloma Etiology: Profile of Jonathan Hofmann

    Science.gov (United States)

    Tenure-track investigator Jonathan Hofmann, Ph.D., M.P.H., has established a research program in the Occupational and Environmental Epidemiology Branch focused on the role of agricultural exposures in the etiology of multiple myeloma and other cancers, and on understanding the biological mechanisms that influence the development and progression of multiple myeloma.

  14. Spontaneous compactification of D=10 Maxwell-Einstein theory leads to SU(3) X SU(2) X U(1) gauge symmetry

    International Nuclear Information System (INIS)

    Watamura, S.

    1983-01-01

    Solutions of ten-dimensional Maxwell-Einstein theory and a bosonic part of N = 2, D = 10 supergravity theory are examined. It is shown that there is a solution for which six-dimensional internal space is compactified into CP 2 x S 2 . The gauge symmetry of the effective four-dimensional theory is SU(3) x SU(2) x U(1). The introduction of fermions is also considered. The requirement of consistency in introducing a spinsup(C) structure on CP 2 results in a U(1) charge quantization condition. (orig.)

  15. Bosonization of the generalized SU(3) Nambu-Jona-Lasinio model in the 1/N expansion; Bosonizacao do modelo de Nambu-Jona-Lasinio SU(3) generalizado na expansao 1/N

    Energy Technology Data Exchange (ETDEWEB)

    Campos, Francisco Antonio Pena

    1995-12-31

    The present work consists in a 1/N expansion of extended version of the SU(3) Nambu-Jona-Lasinio model in the context of the Functional Integral. The gap equations, meson propagators, triangle diagram, etc, appear quite naturally as different orders in the expansion. The new features of this approach is the inclusion of high order corrections in the 1/N leading orders, which have never included in the previous one. The method also allows for the construction of a chiral Lagrangian of interacting mesons based on the SU(3) NJL model, here obtained for the first time. (author) 32 refs., 11 figs., 5 tabs.

  16. The dispute between Jonathan Franzen and Oprah Winfrey

    Directory of Open Access Journals (Sweden)

    Nina Bostič

    2008-12-01

    Full Text Available Following the publication of Jonathan Franzen's The Corrections in September 2001, the novel was selected by Oprah's Book Club. Afterwards,  Franzen commented  negatively on the club's  previ­ ous selections, upon which the invitation was withdrawn. The objective of this paper is to investigate the reasons behind Franzen's negative response, the proceeding  media fall-out and the effects of the Winfrey - Franzen dispute.

  17. The Ties that Bind: A Response to Jonathan Jansen

    Science.gov (United States)

    Sehoole, Chika Trevor

    2006-01-01

    In his critique of academic writing about and public consumption of government policy and law, Jonathan Jansen uses his argument of the symbolic functions of education law and education policy as a basis for explaining the lack of progress in achieving equity and justice under "Brown v. Board of Education" (1954) in the United States and…

  18. 3D gauged supergravity from SU(2) reduction of $N=1$ 6D supergravity

    CERN Document Server

    Gava, Edi; Narain, K S

    2010-01-01

    We obtain Yang-Mills $SU(2)\\times G$ gauged supergravity in three dimensions from $SU(2)$ group manifold reduction of (1,0) six dimensional supergravity coupled to an anti-symmetric tensor multiplet and gauge vector multiplets in the adjoint of $G$. The reduced theory is consistently truncated to $N=4$ 3D supergravity coupled to $4(1+\\textrm{dim}\\, G)$ bosonic and $4(1+\\textrm{dim}\\, G)$ fermionic propagating degrees of freedom. This is in contrast to the reduction in which there are also massive vector fields. The scalar manifold is $\\mathbf{R}\\times \\frac{SO(3,\\, \\textrm{dim}\\, G)}{SO(3)\\times SO(\\textrm{dim}\\, G)}$, and there is a $SU(2)\\times G$ gauge group. We then construct $N=4$ Chern-Simons $(SO(3)\\ltimes \\mathbf{R}^3)\\times (G\\ltimes \\mathbf{R}^{\\textrm{dim}G})$ three dimensional gauged supergravity with scalar manifold $\\frac{SO(4,\\,1+\\textrm{dim}G)}{SO(4)\\times SO(1+\\textrm{dim}G)}$ and explicitly show that this theory is on-shell equivalent to the Yang-Mills $SO(3)\\times G$ gauged supergravity the...

  19. The flipped SU(5)xU(1) string model revamped

    Energy Technology Data Exchange (ETDEWEB)

    Antoniadis, I.; Ellis, J.; Hagelin, J.S.; Nanopoulos, D.V. (European Organization for Nuclear Research, Geneva (Switzerland))

    1989-11-02

    We present a refined version of our three-generation flipped SU(5)xU(1) string model with the following properties. The complete massless spectrum is derived and shown to be free of all gauge and mixed anomalies apart from a single anomalous U(1). The imaginary part of the dilaton supermultiplet is eaten by the anomalous U(1) gauge boson, and the corresponding D-term is cancelled by large VEVs for singlet fields that break surplus U(1) gauge factors, leaving a supersymmetric vacuum with an SU(5)xU(1) visible gauge group and an SO(10)xSO(6) hidden gauge group. There are sufficient Higgs multiplets to break the visible gauge symmetry down to the standard model in an essentially unique way. All trilinear superpotential couplings have been calculated and there are in particular some giving m{sub t}, m{sub b}, m{sub tau}ne0. A renormalization group analysis shows that m{sub t}<190 GeV and m{sub b}{approx equal}3m{sub tau}. Light Higgs doublets are split automatically from heavy Higgs triplets, leaving no residual dimension-five operators for baryon decay, and the baryon lifetime tau{sub B} {approx equal} 2x10{sup 34{plus minus}2} yr. There are no tree-level flavour-changing neutral currents, but muyieldsegamma may occur at a detectable level: B(muyieldsegamma){proportional to} 10{sup -11}-10{sup -14}. (orig.).

  20. Phenomenology of an SU(2)×SU(2)×U(1) model with lepton-flavour non-universality

    Energy Technology Data Exchange (ETDEWEB)

    Boucenna, Sofiane M. [Laboratori Nazionali di Frascati, INFN,Via Enrico Fermi 40, 100044 Frascati (Italy); Celis, Alejandro [Arnold Sommerfeld Center for Theoretical Physics, Fakultät für Physik,Ludwig-Maximilians-Universität München,Theresienstrasse 37, 80333 München (Germany); Fuentes-Martín, Javier; Vicente, Avelino [Instituto de Física Corpuscular, Universitat de València - CSIC,E-46071 València (Spain); Virto, Javier [Albert Einstein Center for Fundamental Physics,Institute for Theoretical Physics, University of Bern,CH-3012 Bern (Switzerland)

    2016-12-14

    We investigate a gauge extension of the Standard Model in light of the observed hints of lepton universality violation in b→cℓν and b→sℓ{sup +}ℓ{sup −} decays at BaBar, Belle and LHCb. The model consists of an extended gauge group SU(2){sub 1SU(2){sub 2}×U(1){sub Y} which breaks spontaneously around the TeV scale to the electroweak gauge group. Fermion mixing effects with vector-like fermions give rise to potentially large new physics contributions in flavour transitions mediated by W{sup ′} and Z{sup ′} bosons. This model can ease tensions in B-physics data while satisfying stringent bounds from flavour physics, and electroweak precision data. Possible ways to test the proposed new physics scenario with upcoming experimental measurements are discussed. Among other predictions, the ratios R{sub M}=Γ(B→Mμ{sup +}μ{sup −})/Γ(B→Me{sup +}e{sup −}), with M=K{sup ∗},ϕ, are found to be reduced with respect to the Standard Model expectation R{sub M}≃1.

  1. SU(2) x U(1) x U'(1) models which are slightly different from the Weinberg-Salam model

    International Nuclear Information System (INIS)

    Gao, C.; Wu, D.

    1981-01-01

    We discuss SU(2) x U(1) x U'(1) models by a uniform formula which is convenient for their comparison with the standard Weinberg-Salam model. As examples, we give three interesting models which are based on different grand unification models. In one model, U'(1) does not contribute to the electromagnetic interaction; in the other two, both U(1) and U'(1) do contribute to the electromagnetic interaction. Also, the first two models can approach the standard Weinberg-Salam model as close as one wants; but the third model has limitations on it

  2. Supersymmetric Racah basis, family of infinite-dimensional superalgebras, SU(∞ + 1|∞) and related 2D models

    International Nuclear Information System (INIS)

    Fradkin, E.S.; Linetsky, V.Ya.

    1990-10-01

    The irreducible Racah basis for SU(N + 1|N) is introduced. An analytic continuation with respect to N leads to infinite-dimensional superalgebras su(υ + 1|υ). Large υ limit su(∞ + 1|∞) is calculated. The higher spin Sugawara construction leading to generalizations of the Virasoro algebra with infinite tower of higher spin currents is proposed and related WZNW and Toda models as well as possible applications in string theory are discussed. (author). 32 refs

  3. String completion of an SU(3c⊗SU(3L⊗U(1X electroweak model

    Directory of Open Access Journals (Sweden)

    Andrea Addazi

    2016-08-01

    Full Text Available The extended electroweak SU(3c⊗SU(3L⊗U(1X symmetry framework “explaining” the number of fermion families is revisited. While 331-based schemes can not easily be unified within the conventional field theory sense, we show how to do it within an approach based on D-branes and (unoriented open strings, on Calabi–Yau singularities. We show how the theory can be UV-completed in a quiver setup, free of gauge and string anomalies. Lepton and baryon numbers are perturbatively conserved, so neutrinos are Dirac-type, and their lightness results from a novel TeV scale seesaw mechanism. Dynamical violation of baryon number by exotic instantons could induce neutron–antineutron oscillations, with proton decay and other dangerous R-parity violating processes strictly forbidden.

  4. su(1,2) Algebraic Structure of XYZ Antiferromagnetic Model in Linear Spin-Wave Frame

    International Nuclear Information System (INIS)

    Jin Shuo; Xie Binghao; Yu Zhaoxian; Hou Jingmin

    2008-01-01

    The XYZ antiferromagnetic model in linear spin-wave frame is shown explicitly to have an su(1,2) algebraic structure: the Hamiltonian can be written as a linear function of the su(1,2) algebra generators. Based on it, the energy eigenvalues are obtained by making use of the similar transformations, and the algebraic diagonalization method is investigated. Some numerical solutions are given, and the results indicate that only one group solution could be accepted in physics

  5. SU(2) X SU(2) X U(1) basis for symmetric SO(6) representations: matrix elements of the generators

    International Nuclear Information System (INIS)

    Piepenbring, R.; Silvestre-Brac, B.; Szymanski, Z.

    1987-01-01

    Matrix elements of the group generators for the symmetric irreducible representations of SO(6) are explicitly calculated in a closed form employing thedecomposition chain SO(6) is contained in SU(2) X SU(2) X U(1) (which is different from the well known Wigner supermultiplet scheme). The relation to the Gel'fand Tsetlin method using SO(6) contained in SO(5) up to ... SO(2) is indicated. An example of a physical application is given

  6. Texture, Textuality and Political Discourse: A Study of Lexical Cohesion in Nigeria's President Goodluck Jonathan's Inaugural Address, May, 2011

    Science.gov (United States)

    Enyi, Amaechi Uneke; Chitulu, Mark Ononiwu

    2015-01-01

    This study, entitled, "Texture and textuality in Political Discourse: A Study of Cohesive Devices in President Goodluck Jonathan's Inaugural Address-May, 2011" was an analysis of the lexical cohesive devices employed by Nigeria's President Goodluck Jonathan in crafting his May, 2011's Presidential Inaugural Address (PIA). Guided by the…

  7. Dimensional Reduction of N=1, E_8 SYM over SU(3)/U(1) x U(1) x Z_3 and its four-dimensional effective action

    CERN Document Server

    Irges, Nikos; Zoupanos, George

    2011-01-01

    We present an extension of the Standard Model inspired by the E_8 x E_8 Heterotic String. In order that a reasonable effective Lagrangian is presented we neglect everything else other than the ten-dimensional N=1 supersymmetric Yang-Mills sector associated with one of the gauge factors and certain couplings necessary for anomaly cancellation. We consider a compactified space-time M_4 x B_0 / Z_3, where B_0 is the nearly-Kaehler manifold SU(3)/U(1) x U(1) and Z_3 is a freely acting discrete group on B_0. Then we reduce dimensionally the E_8 on this manifold and we employ the Wilson flux mechanism leading in four dimensions to an SU(3)^3 gauge theory with the spectrum of a N=1 supersymmetric theory. We compute the effective four-dimensional Lagrangian and demonstrate that an extension of the Standard Model is obtained with interesting features including a conserved baryon number and fixed tree level Yukawa couplings and scalar potential. The spectrum contains new states such as right handed neutrinos and heavy ...

  8. SU(3)xSU(2) color symmetry and Usub(B)(1)xSUsub(f)(4) quark model of hadrons

    International Nuclear Information System (INIS)

    Khrushchov, V.V.

    1982-01-01

    A quark model with a generalized color group SUsub(c)(3)xSU'sub(c)(2) is treated in the framework of the SUsub(f)(4)xUsub(B)(1) symnetry of strong interactions. The model contains twelve standard u, d, s, c quarks and new quarks belonging to representation 6 of the SU(4) group. The properties of new quarks are considered with respect to the color group and some properties of the exotic states, predicted by the model are presented

  9. SU(2) x U(1) unified theory for charge, orbit and spin currents

    International Nuclear Information System (INIS)

    Jin Peiqing; Li Youquan; Zhang Fuchun

    2006-01-01

    Spin and charge currents in systems with Rashba or Dresselhaus spin-orbit couplings are formulated in a unified version of four-dimensional SU(2) x U(1) gauge theory, with U(1) being the Maxwell field and SU(2) being the Yang-Mills field. While the bare spin current is non-conserved, it is compensated by a contribution from the SU(2) gauge field, which gives rise to a spin torque in the spin transport, consistent with the semi-classical theory of Culcer et al. Orbit current is shown to be non-conserved in the presence of electromagnetic fields. Similar to the Maxwell field inducing forces on charge and charge current, we derive forces acting on spin and spin current induced by the Yang-Mills fields such as the Rashba and Dresselhaus fields and the sheer strain field. The spin density and spin current may be considered as a source generating Yang-Mills field in certain condensed matter systems

  10. Probing neutrino and Higgs sectors in { SU(2) }_1 × { SU(2) }_2 × { U(1) }_Y model with lepton-flavor non-universality

    Science.gov (United States)

    Hue, L. T.; Arbuzov, A. B.; Ngan, N. T. K.; Long, H. N.

    2017-05-01

    The neutrino and Higgs sectors in the { SU(2) }_1 × { SU(2) }_2 × { U(1) }_Y model with lepton-flavor non-universality are discussed. We show that active neutrinos can get Majorana masses from radiative corrections, after adding only new singly charged Higgs bosons. The mechanism for the generation of neutrino masses is the same as in the Zee models. This also gives a hint to solving the dark matter problem based on similar ways discussed recently in many radiative neutrino mass models with dark matter. Except the active neutrinos, the appearance of singly charged Higgs bosons and dark matter does not affect significantly the physical spectrum of all particles in the original model. We indicate this point by investigating the Higgs sector in both cases before and after singly charged scalars are added into it. Many interesting properties of physical Higgs bosons, which were not shown previously, are explored. In particular, the mass matrices of charged and CP-odd Higgs fields are proportional to the coefficient of triple Higgs coupling μ . The mass eigenstates and eigenvalues in the CP-even Higgs sector are also presented. All couplings of the SM-like Higgs boson to normal fermions and gauge bosons are different from the SM predictions by a factor c_h, which must satisfy the recent global fit of experimental data, namely 0.995<|c_h|<1. We have analyzed a more general diagonalization of gauge boson mass matrices, then we show that the ratio of the tangents of the W-W' and Z-Z' mixing angles is exactly the cosine of the Weinberg angle, implying that number of parameters is reduced by 1. Signals of new physics from decays of new heavy fermions and Higgs bosons at LHC and constraints of their masses are also discussed.

  11. Sulev Keedus : "Jonathan" on film esti indiaanlastest / Sulev Keedus ; interv. Ain Lember

    Index Scriptorium Estoniae

    Keedus, Sulev, 1957-

    2007-01-01

    Dokumentaalfilm "Jonathan Austraaliast" : režissöör ja operaator Sulev Keedus : F-Seitse 2007. Režissöör filmist, kaitstes end kohaliku rahva süüdistuste vastu filmis kujutatu ebaeetilisuse üle

  12. Engineering the Frequency Spectrum of Bright Squeezed Vacuum via Group Velocity Dispersion in an SU(1,1) Interferometer

    OpenAIRE

    Lemieux, Samuel; Manceau, Mathieu; Sharapova, Polina R.; Tikhonova, Olga V.; Boyd, Robert W.; Leuchs, Gerd; Chekhova, Maria V.

    2016-01-01

    Bright squeezed vacuum, a promising tool for quantum information, can be generated by high-gain parametric down-conversion. However, its frequency and angular spectra are typically quite broad, which is undesirable for applications requiring single-mode radiation. We tailor the frequency spectrum of high-gain parametric down-conversion using an SU(1,1) interferometer consisting of two nonlinear crystals with a dispersive medium separating them. The dispersive medium allows us to select a narr...

  13. Global analysis of general SU(2)xSU(2)xU(1) models with precision data

    International Nuclear Information System (INIS)

    Hsieh, Ken; Yu, Jiang-Hao; Yuan, C.-P.; Schmitz, Kai

    2010-01-01

    We present the results of a global analysis of a class of models with an extended electroweak gauge group of the form SU(2)xSU(2)xU(1), often denoted as G(221) models, which include as examples the left-right, the leptophobic, the hadrophobic, the fermiophobic, the un-unified, and the nonuniversal models. Using an effective Lagrangian approach, we compute the shifts to the coefficients in the electroweak Lagrangian due to the new heavy gauge bosons, and obtain the lower bounds on the masses of the Z ' and W ' bosons. The analysis of the electroweak parameter bounds reveals a consistent pattern of several key observables that are especially sensitive to the effects of new physics and thus dominate the overall shape of the respective parameter contours.

  14. Global analysis of general SU(2) x SU(2) x U(1) models with precision data

    International Nuclear Information System (INIS)

    Hsieh, Ken; Yu, Jiang-Hao; Yuan, C.P.; Schmitz, Kai; Michigan State Univ., East Lansing, MI

    2010-05-01

    We present the results of a global analysis of a class of models with an extended electroweak gauge group of the form SU(2) x SU(2) x U(1), often denoted as G(221) models, which include as examples the left-right, the lepto-phobic, the hadro-phobic, the fermio-phobic, the un-unified, and the non-universal models. Using an effective Lagrangian approach, we compute the shifts to the coeffcients in the electroweak Lagrangian due to the new heavy gauge bosons, and obtain the lower bounds on the masses of the Z' and W' bosons. The analysis of the electroweak parameter bounds reveals a consistent pattern of several key observables that are especially sensitive to the effects of new physics and thus dominate the overall shape of the respective parameter contours. (orig.)

  15. Case 3. "Jiang Tao v. Chengdu Branch, People's People's Bank of China": Opinion by the People's Court in Wuhou District, Chengdu, Sichuan Province

    Science.gov (United States)

    Chinese Education and Society, 2006

    2006-01-01

    This article presents the decision of the People's Court in Wuhou District, Chengdu, Sichuan Province on the Jiang Tao v. Chengdu Branch, People's People's Bank of China case. Jiang Tao, the plaintiff, claimed that the defendant Chengdu Branch placed an announcement in the "Chengdu Business Daily" to "recruit tellers for Chengdu…

  16. The SU(3)xU(1) invariant breaking of gauged N=8 supergravity

    International Nuclear Information System (INIS)

    Nicolai, H.; Warner, N.P.

    1985-01-01

    The SU(3) x U(1) invariant stationary point of N=8 supergravity is described in some detail. This vacuum has N=2 supersymmetry, and it is shown how the fields of N=8 supergravity may be collected into multiplets of SU(3) x Osp(2, 4). A new kind of shortened massive multiplet is described, and the multiplet shortening conditions for this and other multiplets are used to determine, by the use of group theory alone, the masses of many of the fields in the vacuum. The remaining masses are determined by explicit calculation. The critical point realizes Gell-Mann's scheme for relating the spin-1/2 fermions of the theory to the observed quarks and leptons. (orig.)

  17. Self-interacting dark matter and Higgs bosons in the SU(3)C x SU(3)L x U(1)N model with right-handed neutrinos

    International Nuclear Information System (INIS)

    Hoang Ngoc Long; Nguyen Quynh Lan

    2003-05-01

    We show that the SU(3) C x SU(3) L x U(1) N (3-3-1) model with right-handed neutrinos can provide candidates for self-interacting dark matter, namely they are the CP-even and odd Higgs bosons. These dark matters are stable without imposing of new symmetry and should be weak-interacting. (author)

  18. Strongest experimental constraints on SU(5)xU(1) supergravity models

    International Nuclear Information System (INIS)

    Lopez, J.L.; Nanopoulos, D.V.; Park, G.T.; Zichichi, A.

    1994-01-01

    We consider a class of well-motivated string-inspired flipped SU(5) supergravity models which include four supersymmetry-breaking scenarios: no-scale, strict no-scale, dilaton, and special dilaton, such that only three parameters are needed to describe all new phenomena (m t ,tanβ,m g ). We show that the CERN LEP precise measurements of the electroweak parameters in the form of the ε 1 variable and the CLEO II allowed range for B(b→sγ) are at present the most important experimental constraints on this class of models. For m t approx-gt 155 (165) GeV, the ε 1 constraint [at 90 (95)% C.L.] requires the presence of light charginos (m χ1 ± approx-lt 50--100 GeV depending on m t ). Since all sparticle masses are proportional to m g , m χ1 ± approx-lt 100 GeV implies m χ1 0 approx-lt 55 GeV, m χ2 0 approx-lt 100 GeV, m g approx-lt 360 GeV, m q approx-lt 350 (365) GeV, m e R approx-lt 80 (125) GeV, m e L approx-lt 120 (155) GeV, and m n u approx-lt 100 (140) GeV in the no-scale (dilaton) flipped SU(5) supergravity model. The B(b→sγ) constraint excludes a significant fraction of the otherwise allowed region in the (m χ1 ± ,tanβ) plane (irrespective of the magnitude of the chargino mass), while future experimental improvements will result in decisive tests of these models

  19. ENVIRONMENTAL TECHNOLOGY VERIFICATION REPORT: RESIDENTIAL ELECTRIC POWER GENERATION USING THE PLUG POWER SU1 FUEL CELL SYSTEM

    Science.gov (United States)

    The Environmental Technology Verification report discusses the technology and performance of the Plug Power SU1 Fuel Cell System manufactured by Plug Power. The SU1 is a proton exchange membrane fuel cell that requires hydrogen (H2) as fuel. H2 is generally not available, so the ...

  20. Global analysis of general SU(2) x SU(2) x U(1) models with precision data

    Energy Technology Data Exchange (ETDEWEB)

    Hsieh, Ken; Yu, Jiang-Hao; Yuan, C.P. [Michigan State Univ., East Lansing, MI (United States). Dept. of Physics and Astronomy; Schmitz, Kai [Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany); Michigan State Univ., East Lansing, MI (United States). Dept. of Physics and Astronomy

    2010-05-15

    We present the results of a global analysis of a class of models with an extended electroweak gauge group of the form SU(2) x SU(2) x U(1), often denoted as G(221) models, which include as examples the left-right, the lepto-phobic, the hadro-phobic, the fermio-phobic, the un-unified, and the non-universal models. Using an effective Lagrangian approach, we compute the shifts to the coeffcients in the electroweak Lagrangian due to the new heavy gauge bosons, and obtain the lower bounds on the masses of the Z' and W' bosons. The analysis of the electroweak parameter bounds reveals a consistent pattern of several key observables that are especially sensitive to the effects of new physics and thus dominate the overall shape of the respective parameter contours. (orig.)

  1. Geometrical theory of ghost and Higgs fields and SU(2/1)

    International Nuclear Information System (INIS)

    Ne'eman, Y.; Thierry-Mieg, J.

    1979-10-01

    That a Principal Fiber Bundle provides a precise geometrical representation of Yang-Mills gauge theories has been known since 1963 and used since 1975. This work presents an entirely new domain of applications. The Feynman-DeWitt-Fadeev-Popov ghost-fields required in the renormalization procedure are identified with geometrical objects in the Principal Bundle. This procedure directly yields the BRS equations guaranteeing unitarity and Slavnov-Taylor invariance of the quantum effective Lagrangian. Except for one ghost field and its variation, this entire symmetry thus corresponds to classical notions, in that it is geometrical, and completely independent of the gauge-fixing procedure, which determines the quantized Lagrangian. These results may be used to fix the signs associated with the various ghost loops of quantum supergravity. The result is based upon the identification of a geometrical Z(2) x Z(2) double-gradation of the generalized fields in supergravity: [physical/ghost] fields and [integer/half integer] spins. Then the case of a supergroup as an internal symmetry gauge is considered. Ghosts geometrically associated to odd generators may be identified with the Goldstone-Nambu Higgs-Kibble scalar fields of conventional models with spontaneous symmetry breakdown. As an example, the chiral SU(3)/sub L/ x SU(3)/sub R/ flavor symmetry is realized by gauging the supergroup Q(3).Lastly, the main results concerning asthenodynamics (Weak-EM Unification) as given by the ghost-gauge SU(2/1) supergroup are recalled. 1 table

  2. Path representation of su-hat (2){sub k} states I: Operators and particles for k=1,2

    Energy Technology Data Exchange (ETDEWEB)

    Lamy-Poirier, Joel, E-mail: jlamypoirier@perimeterinstitute.c [Departement de physique, de genie physique et d' optique, Universite Laval, Quebec, G1K 7P4 (Canada); Mathieu, Pierre, E-mail: pmathieu@phy.ulaval.c [Departement de physique, de genie physique et d' optique, Universite Laval, Quebec, G1K 7P4 (Canada)

    2011-04-11

    This is the first of two articles devoted to the analysis of the path description of the states in su-hat (2){sub k} WZW models, a representation well suited for constructive derivations of the fermionic characters. In this first article, the cases k=1,2 are treated in detail, emphasizing a different description in each case (operators vs particles). For k=1, we first prove, as a side result, the equivalence of two known path representations for the finitized su-hat (2){sub 1} states by displaying an explicit bijection. An immediate offshoot is the gain of a new and simple weighting for the (Kyoto) path representation that generalizes to level k. The bijection also suggests two operator constructions for the su-hat (2){sub 1} paths, a local and a nonlocal one, both interrelated. These are formal operators that map a path to another path, so that any path can be obtained by successive applications of these operators on a simple reference (ground-state) path. The nonlocal operator description is the starting point for a direct and elementary derivation of the su-hat (2){sub 1} spinon character. The second part presents an extensive study of the su-hat (2){sub 2} paths from their particle point of view, where the particles are defined as the path building blocks. The resulting generating functions appear to provide new (at least superficially) fermionic forms of the characters. In particular, a nice relationship between the sum of the j=0,1 characters at k=2 and the two ones at k=1 is unraveled.

  3. Closed flux tubes in D=2+1SU(N) gauge theories: dynamics and effective string description

    Energy Technology Data Exchange (ETDEWEB)

    Athenodorou, Andreas [Department of Physics, University of Cyprus,POB 20537, 1678 Nicosia (Cyprus); Computation-based Science and Technology Research Center, The Cyprus Institute,20 Kavafi Str., Nicosia 2121 (Cyprus); Teper, Michael [Rudolf Peierls Centre for Theoretical Physics, University of Oxford,1 Keble Road, Oxford OX1 3NP (United Kingdom)

    2016-10-18

    We extend our earlier calculations of the spectrum of closed flux tubes in SU(N) gauge theories in 2+1 dimensions, with a focus on questions raised by recent theoretical progress on the effective string action of long flux tubes and the world-sheet action for flux tubes of moderate lengths. Our new calculations in SU(4) and SU(8) provide evidence that the leading O(1/l{sup γ}) non-universal correction to the flux tube ground state energy does indeed have a power γ≥7. We perform a study in SU(2), where we can traverse the length at which the Nambu-Goto ground state becomes tachyonic, to obtain an all-N view of the spectrum. Our comparison of the k=2 flux tube excitation energies in SU(4) and SU(6) suggests that the massive world sheet excitation associated with the k=2 binding has a scale that knows about the group and hence the theory in the bulk, and we comment on the potential implications of world sheet massive modes for the bulk spectrum. We provide a quantitative analysis of the surprising (near-)orthogonality of flux tubes carrying flux in different SU(N) representations, which implies that their screening by gluons is highly suppressed even at small N.

  4. Closed flux tubes in D=2+1SU(N) gauge theories: dynamics and effective string description

    International Nuclear Information System (INIS)

    Athenodorou, Andreas; Teper, Michael

    2016-01-01

    We extend our earlier calculations of the spectrum of closed flux tubes in SU(N) gauge theories in 2+1 dimensions, with a focus on questions raised by recent theoretical progress on the effective string action of long flux tubes and the world-sheet action for flux tubes of moderate lengths. Our new calculations in SU(4) and SU(8) provide evidence that the leading O(1/l"γ) non-universal correction to the flux tube ground state energy does indeed have a power γ≥7. We perform a study in SU(2), where we can traverse the length at which the Nambu-Goto ground state becomes tachyonic, to obtain an all-N view of the spectrum. Our comparison of the k=2 flux tube excitation energies in SU(4) and SU(6) suggests that the massive world sheet excitation associated with the k=2 binding has a scale that knows about the group and hence the theory in the bulk, and we comment on the potential implications of world sheet massive modes for the bulk spectrum. We provide a quantitative analysis of the surprising (near-)orthogonality of flux tubes carrying flux in different SU(N) representations, which implies that their screening by gluons is highly suppressed even at small N.

  5. Memory Consolidation of Attended Information Is Optional: Comment on Jiang et al. (2016)

    Science.gov (United States)

    Wyble, Brad; Chen, Hui

    2017-01-01

    Attribute amnesia is a phenomenon in which information about a stimulus that was just recently used to perform a task is poorly remembered in a surprise test (Chen & Wyble, 2015a). In a recent article by Jiang, Shupe, Swallow, and Tan (2016), this effect was replicated but with an additional priming measure that revealed some carryover memory…

  6. A Pragma-Stylistic Analysis of President Goodluck Ebele Jonathan Inaugural Speech

    Science.gov (United States)

    Abuya, Eromosele John

    2012-01-01

    The study was an examination through the pragma-stylistic approach to meaning of the linguistic acts that manifest in the Inaugural Speech of Goodluck Ebele Jonathan as the democratically elected president in May 2011 General Elections in Nigeria. Hence, the study focused on speech acts type of locution, illocutionary and perlocutionary in the…

  7. The Devil in Mr. Smith: A Conversation with Jonathan Z. Smith

    Science.gov (United States)

    Smith, Jonathan Z.; Pearson, Thomas; Gallagher, Eugene V.; Jensen, Tim; Fujiwara, Satoko

    2014-01-01

    This interview was recorded in November 2012 in Jonathan Z. Smith's Hyde Park graystone. Professor Smith offers insights into how he thinks about his classroom teaching and his students' learning through descriptions of various assignments and classroom activities he has developed over more than forty years of teaching. The discussion…

  8. Electromagnetic mass differences in the SU(3) x U(1) gauge model

    International Nuclear Information System (INIS)

    Maharana, K.; Sastry, C.V.

    1975-01-01

    In this note we point out that the electromagnetic mass differences of the pion and kaon in the SU(3) times U(1) model are the same as in Weinberg's model except for the differences in the masses of the gauge bosons

  9. JIL-1 and Su(var)3-7 Interact Genetically and Counteract Each Other's Effect on Position-Effect Variegation in Drosophila

    Science.gov (United States)

    Deng, Huai; Cai, Weili; Wang, Chao; Lerach, Stephanie; Delattre, Marion; Girton, Jack; Johansen, Jørgen; Johansen, Kristen M.

    2010-01-01

    The essential JIL-1 histone H3S10 kinase is a key regulator of chromatin structure that functions to maintain euchromatic domains while counteracting heterochromatization and gene silencing. In the absence of the JIL-1 kinase, two of the major heterochromatin markers H3K9me2 and HP1a spread in tandem to ectopic locations on the chromosome arms. Here we address the role of the third major heterochromatin component, the zinc-finger protein Su(var)3-7. We show that the lethality but not the chromosome morphology defects associated with the null JIL-1 phenotype to a large degree can be rescued by reducing the dose of the Su(var)3-7 gene and that Su(var)3-7 and JIL-1 loss-of-function mutations have an antagonistic and counterbalancing effect on position-effect variegation (PEV). Furthermore, we show that in the absence of JIL-1 kinase activity, Su(var)3-7 gets redistributed and upregulated on the chromosome arms. Reducing the dose of the Su(var)3-7 gene dramatically decreases this redistribution; however, the spreading of H3K9me2 to the chromosome arms was unaffected, strongly indicating that ectopic Su(var)3-9 activity is not a direct cause of lethality. These observations suggest a model where Su(var)3-7 functions as an effector downstream of Su(var)3-9 and H3K9 dimethylation in heterochromatic spreading and gene silencing that is normally counteracted by JIL-1 kinase activity. PMID:20457875

  10. Parity violations in electron-nucleon scattering and the SU(2)sub(L)xSU(2)sub(R)xU(1)sub(L+R) electroweak symmetry

    International Nuclear Information System (INIS)

    Rajpoot, S.

    1981-07-01

    The SU(2)sub(L) x SU(2)sub(R) x U(1)sub(L+R) model of electroweak interactions is described with the most general gauge couplings gsub(L), gsub(R) and gsub(L+R). The case in which neutrino neutral current interactions are identical to the standard SU(2)sub(L) x U(1)sub(L+R) model is discussed in detail. It is shown that with the weak angle lying in the experimental range sin 2 thetaSUB(w)=0.23+-0.015 and 1 2 /gsub(R) 2 <3 it is possible to explain the amount of parity violation observed at SLAC and at the same time predict values of the ''weak charge'' in bismuth to lie in the range admitted by the controversal data from different experiments. (author)

  11. Phenomenology of the SU(3)cxSU(3)LxU(1)X model with exotic charged leptons

    International Nuclear Information System (INIS)

    Salazar, Juan C.; Ponce, William A.; Gutierrez, Diego A.

    2007-01-01

    A phenomenological analysis of the three-family model based on the local gauge group SU(3) c xSU(3) L xU(1) X with exotic charged leptons, is carried out. Instead of using the minimal scalar sector able to break the symmetry in a proper way, we introduce an alternative set of four Higgs scalar triplets, which combined with an anomaly-free discrete symmetry, produce quark and charged lepton mass spectrum without hierarchies in the Yukawa coupling constants. We also embed the structure into a simple gauge group and show some conditions to achieve a low energy gauge coupling unification, avoiding possible conflict with proton decay bounds. By using experimental results from the CERN-LEP, SLAC linear collider, and atomic parity violation data, we update constraints on several parameters of the model

  12. Implications of Anomalous U(1) Symmetry in Unified Models the Flipped SU(5) x U(1) Paradigm

    CERN Document Server

    Ellis, Jonathan Richard; Rizos, J; Ellis, John

    2000-01-01

    A generic feature of string-derived models is the appearance of an anomalousAbelian U(1)_A symmetry which, among other properties, constrains the Yukawacouplings and distinguishes the three families from each other. In this paper,we discuss in a model-independent way the general constraints imposed by such aU(1)_A symmetry on fermion masses, R-violating couplings and proton-decayoperators in a generic flipped SU(5) x U(1)' model. We construct all possibleviable fermion mass textures and give various examples of effective low-energymodels which are distinguished from each other by their different predictionsfor B-, L- and R-violating effects. We pay particular attention to predictionsfor neutrino masses, in the light of the recent Super-Kamiokande data.

  13. Radiative corrections in SU2 x U1 LEP/SLC

    International Nuclear Information System (INIS)

    Lynn, B.W.; Peskin, M.E.; Stuart, R.G.

    1985-06-01

    We show the sensitivity of various experimental measurements to one-loop radiative corrections in SU 2 x U 1 . Models considered are the standard GSW model as well as extensions of it which include extra quarks and leptons, SUSY and certain technicolor models. The observation of longitudinal polarization is a great help in seeing these effects in asymmetries in e + e - → μ + μ - , tau + tau - on Z 0 resonance. 25 refs., 22 figs., 10 tabs

  14. The prognostic value of the suPARnosticTM ELISA assay in HIV-1 infected individuals is not affected by uPAR promoter polymorphisms

    DEFF Research Database (Denmark)

    Schneider, Uffe Vest; Nielsen, Rikke Lyngaa; Pedersen, Court

    2007-01-01

    BACKGROUND: High blood levels of soluble urokinase Plasminogen Activator Receptor (suPAR) are associated with poor outcomes in human immunodeficiency-1 (HIV-1) infected individuals. Research on the clinical value of suPAR in HIV-1 infection led to the development of the suPARnosticTM assay...... for commercial use in 2006. The aim of this study was to: 1) Evaluate the prognostic value of the new suPARnosticTM assay and 2) Determine whether polymorphisms in the active promoter of uPAR influences survival and/or suPAR values in HIV-1 patients who are antiretroviral therapy (ART) naive. METHODS: DNA...... and an A to G transition at -465 comparative to the transcription start site. These promoter transitions did not influence neither the suPAR levels nor patient survival. CONCLUSION: Plasma suPAR levels, as measured by the suPARnosticTM assay, were strongly predictive of survival in ART-naive HIV-1 infected...

  15. Construction Strategies of Social Security System for Wan-jiang Urban Belt’s Migrant Workers

    Institute of Scientific and Technical Information of China (English)

    2011-01-01

    Theoretical debate and practice exploration on social security of migrant workers were introduced.The political direction and security layer on social security for migrant workers in Wan-jiang urban belt were analyzed:the first layer is to implement wage payment guarantee and employment injury insurance;the second layer is to emphasize serious disease insurance and endowment insurance;the third layer is unemployed insurance and social assistance.The primary strategy of building a social security system for migrant workers in Wan-jiang urban belt was put up:wage payment guarantee system that is united in certain regions should be promoted;employment injury insurance system that is undertaken by enterprises should be built;a social health care system for serious diseases should be set up;multi-layers endowment insurance system for migrant workers should be created;vocational training and training in how to start a business should be built as well as the unemployment insurance system;social assistant system based on the basic cost of living allowances should be set up.

  16. Pramana – Journal of Physics | Indian Academy of Sciences

    Indian Academy of Sciences (India)

    Author Affiliations. Yan Jiang1 2 Bo Tian1 2 Pan Wang1 2 Kun Su1 2. State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing 100876, China; School of Science, Beijing University of Posts and Telecommunications, Beijing 100876, China ...

  17. Bosonization of the generalized SU(3) Nambu-Jona-Lasinio model in the 1/N expansion

    International Nuclear Information System (INIS)

    Campos, Francisco Antonio Pena

    1995-01-01

    The present work consists in a 1/N expansion of extended version of the SU(3) Nambu-Jona-Lasinio model in the context of the Functional Integral. The gap equations, meson propagators, triangle diagram, etc, appear quite naturally as different orders in the expansion. The new features of this approach is the inclusion of high order corrections in the 1/N leading orders, which have never included in the previous one. The method also allows for the construction of a chiral Lagrangian of interacting mesons based on the SU(3) NJL model, here obtained for the first time. (author)

  18. ɛ '/ ɛ anomaly and neutron EDM in SU(2) L × SU(2) R × U(1) B- L model with charge symmetry

    Science.gov (United States)

    Haba, Naoyuki; Umeeda, Hiroyuki; Yamada, Toshifumi

    2018-05-01

    The Standard Model prediction for ɛ '/ ɛ based on recent lattice QCD results exhibits a tension with the experimental data. We solve this tension through W R + gauge boson exchange in the SU(2) L × SU(2) R × U(1) B- L model with `charge symmetry', whose theoretical motivation is to attribute the chiral structure of the Standard Model to the spontaneous breaking of SU(2) R × U(1) B- L gauge group and charge symmetry. We show that {M_W}{_R}study a correlation between ɛ ' /ɛ and the neutron EDM. We confirm that the model can solve the ɛ ' /ɛ anomaly without conflicting the current bound on the neutron EDM, and further reveal that almost all parameter regions in which the ɛ ' /ɛ anomaly is explained will be covered by future neutron EDM searches, which leads us to anticipate the discovery of the neutron EDM.

  19. Renormalization of a tensorial field theory on the homogeneous space SU(2)/U(1)

    Science.gov (United States)

    Lahoche, Vincent; Oriti, Daniele

    2017-01-01

    We study the renormalization of a general field theory on the homogeneous space (SU(2)/ ≤ft. U(1)\\right){{}× d} with tensorial interaction and gauge invariance under the diagonal action of SU(2). We derive the power counting for arbitrary d. For the case d  =  4, we prove perturbative renormalizability to all orders via multi-scale analysis, study both the renormalized and effective perturbation series, and establish the asymptotic freedom of the model. We also outline a general power counting for the homogeneous space {{≤ft(SO(D)/SO(D-1)\\right)}× d} , of direct interest for quantum gravity models in arbitrary dimension, and point out the obstructions to the direct generalization of our results to these cases.

  20. Deep-inelastic lepton scattering in an SU(3) x U(1) gauge model

    International Nuclear Information System (INIS)

    Maharana, K.; Sastry, C.V.

    1976-01-01

    Linear relations and sum rules for deep-inelastic lepton scattering are derived in the light-cone algebra approach from a set of weak, neutral, and electromagnetic currents based on an SU(3) x U(1) gauge model proposed by Schechter and Ueda

  1. Diagenetic differences of the Zhenzhuchong Member of Ziliujing Formation in the Jiulongshan–Jiange area, Sichuan Basin

    Directory of Open Access Journals (Sweden)

    Mingcai Hou

    2015-03-01

    Full Text Available The rocks of the Zhenzhuchong Member of the Ziliujing Formation, Jiulongshan–Jiange area in the Sichuan Basin, were analyzed by petrography, XRD, and SEM techniques to investigate their diagenetic history and properties, such as authigenic mineral types, evolution of mixed-layer illite–smectite minerals, the clay assembly, and the fraction of mixed-layer clay minerals. The results revealed that the Zhenzhuchong Member has experienced several important episodes of diagenetic alteration since the deposition, including compaction (pressure-solution, cementation, metasomatism, dissolution, fracturing, and infilling of caves and cracks. It was also observed that diagenetic properties of the Jiulongshan area were significantly different from those of the Jiange area. The rock samples from the Jiulongshan area were characterized by the composition of siliceous and calcareous cements, varying amounts of detrital grains, clay matrix and kaolinite replaced by calcites, a certain amount of rarely dissolved early-stage kaolinite, dickite, and infillings by late-stage calcite. On the other hand, for the rock samples from the Jiange area, the dissolution is a common phenomenon with features of abundant aluminosilicates-dissolution pores or components, but the replacement phenomenon has rarely been seen. These rock samples were characterized by the presence of clay mineral cements, quartz, and dolomite infillings. It indicated that there was a great difference of diagenesis between the two areas in the types, phase, and temperature of diagenetic fluids. Revealing the difference would provide theoretical and practical implications for the exploration of high quality oil and gas reservoirs.

  2. Flavor violations in no-scale flipped SU(5)xU(1)

    Energy Technology Data Exchange (ETDEWEB)

    Faraggi, A.E.; Lopez, J.L.; Nonopoulos, D.V.; Yuan, K.

    1989-05-04

    We study lepton-number violations in the flipped SU(5)xU(1) model in the context of no-scale supergravity. We find that the experimental limits on ..mu..->e..gamma.., ..mu..->eeanti e, and ..mu.. conversion in nuclei generally imply an upper bound on the top quark mass and a lower bound on the gaugino mass. We conclude that the seed of supersymmetry breaking in no-scale models (gaugino masses) radically changes some results obtained in ''minimal'' N=1 supergravity in the leptonic sector, while results in the hadronic sector (e.g. K-anti K, B-anti B mixings, and b->s..gamma..) remain essentially unchanged.

  3. Vacuum expectation values of Higgs scalars in a SU(2)/sub L/ x SU(2)/sub R/ x U(1) gauge model

    International Nuclear Information System (INIS)

    Kitazoe, T.; Mainland, G.B.; Tanaka, K.

    1979-01-01

    We determine the vacuum expectation values of the Higgs scalars within the framework of a six-quark SU(2)/sub L/ x SU(2)/sub R/ x U(1) gauge model after the imposition of discrete symmetries that are necessary in order to express the Cabibbo angle in terms of quark mass ratios and phases of the vacuum expectation values. We find both real and complex solutions for the vacuum expectation values depending on the relative values of the parameters in the Higgs potential

  4. Vacuum expectation values of Higgs scalars in a SU(2)/sub L/ X SU(2)/sub R/ X U(1) gauge model

    International Nuclear Information System (INIS)

    Kitazoe, T.; Mainland, G.B.; Tanaka, K.

    1978-01-01

    The vacuum expectation values of the Higgs scalars are determined within the framework of a six quark SU(2)/sub L/ x SU(2)/sub R/ x U(1) gauge model after the imposition of discrete symmetrics that are necessary in order to express the Cabibbo angle in terms of quark mass ratios and phases of the vacuum expectation values. Both real and complex solutions are found for the vacuum expectation values depending on the relative values of the parameters in the Higgs potential

  5. Journal of Astrophysics and Astronomy | Indian Academy of Sciences

    Indian Academy of Sciences (India)

    2016-01-27

    Jan 27, 2016 ... Author Affiliations. J. B. Su1 Z.-Q. Shen1 X. Chen1 Jiyune Yi2 D. R. Jiang1 Y. J. Yun3. Shanghai Astronomical Observatory, Chinese Academy of Sciences, Shanghai 200030, China. Korea Astronomy and Space Science Institute, Daejeon 305-348, South Korea. Department of Physics and Astronomy, ...

  6. Phenomenology of the SU(3)c x SU(3)L x U(1)X model with right-handed neutrinos

    International Nuclear Information System (INIS)

    Gutierrez, D.A.; Ponce, W.A.; Sanchez, L.A.

    2006-01-01

    A phenomenological analysis of the three-family model based on the local gauge group SU(3) c x SU(3) L x U(1) X with right-handed neutrinos is carried out. Instead of using the minimal scalar sector able to break the symmetry in a proper way, we introduce an alternative set of four Higgs scalar triplets, which combined with an anomaly-free discrete symmetry, produces a quark mass spectrum without hierarchies in the Yukawa coupling constants. We also embed the structure into a simple gauge group and show some conditions for achieving a low energy gauge coupling unification, avoiding possible conflict with proton decay bounds. By using experimental results from the CERN-LEP, SLAC linear collider, and atomic parity violation data, we update constraints on several parameters of the model. (orig.)

  7. Efficient basis formulation for 1+1 dimensional SU(2) lattice gauge theory. Spectral calculations with matrix product states

    Energy Technology Data Exchange (ETDEWEB)

    Banuls, Mari Carmen; Cirac, J. Ignacio; Kuehn, Stefan [Max-Planck-Institut fuer Quantenoptik (MPQ), Garching (Germany); Cichy, Krzysztof [Frankfurt Univ. (Germany). Inst. fuer Theoretische Physik; Adam Mickiewicz Univ., Poznan (Poland). Faculty of Physics; Jansen, Karl [Deutsches Elektronen-Synchrotron (DESY), Zeuthen (Germany). John von Neumann-Inst. fuer Computing NIC

    2017-07-20

    We propose an explicit formulation of the physical subspace for a 1+1 dimensional SU(2) lattice gauge theory, where the gauge degrees of freedom are integrated out. Our formulation is completely general, and might be potentially suited for the design of future quantum simulators. Additionally, it allows for addressing the theory numerically with matrix product states. We apply this technique to explore the spectral properties of the model and the effect of truncating the gauge degrees of freedom to a small finite dimension. In particular, we determine the scaling exponents for the vector mass. Furthermore, we also compute the entanglement entropy in the ground state and study its scaling towards the continuum limit.

  8. Efficient Basis Formulation for (1+1-Dimensional SU(2 Lattice Gauge Theory: Spectral Calculations with Matrix Product States

    Directory of Open Access Journals (Sweden)

    Mari Carmen Bañuls

    2017-11-01

    Full Text Available We propose an explicit formulation of the physical subspace for a (1+1-dimensional SU(2 lattice gauge theory, where the gauge degrees of freedom are integrated out. Our formulation is completely general, and might be potentially suited for the design of future quantum simulators. Additionally, it allows for addressing the theory numerically with matrix product states. We apply this technique to explore the spectral properties of the model and the effect of truncating the gauge degrees of freedom to a small finite dimension. In particular, we determine the scaling exponents for the vector mass. Furthermore, we also compute the entanglement entropy in the ground state and study its scaling towards the continuum limit.

  9. Efficient Basis Formulation for (1 +1 )-Dimensional SU(2) Lattice Gauge Theory: Spectral Calculations with Matrix Product States

    Science.gov (United States)

    Bañuls, Mari Carmen; Cichy, Krzysztof; Cirac, J. Ignacio; Jansen, Karl; Kühn, Stefan

    2017-10-01

    We propose an explicit formulation of the physical subspace for a (1 +1 )-dimensional SU(2) lattice gauge theory, where the gauge degrees of freedom are integrated out. Our formulation is completely general, and might be potentially suited for the design of future quantum simulators. Additionally, it allows for addressing the theory numerically with matrix product states. We apply this technique to explore the spectral properties of the model and the effect of truncating the gauge degrees of freedom to a small finite dimension. In particular, we determine the scaling exponents for the vector mass. Furthermore, we also compute the entanglement entropy in the ground state and study its scaling towards the continuum limit.

  10. Efficient basis formulation for 1+1 dimensional SU(2) lattice gauge theory. Spectral calculations with matrix product states

    International Nuclear Information System (INIS)

    Banuls, Mari Carmen; Cirac, J. Ignacio; Kuehn, Stefan; Cichy, Krzysztof; Adam Mickiewicz Univ., Poznan; Jansen, Karl

    2017-01-01

    We propose an explicit formulation of the physical subspace for a 1+1 dimensional SU(2) lattice gauge theory, where the gauge degrees of freedom are integrated out. Our formulation is completely general, and might be potentially suited for the design of future quantum simulators. Additionally, it allows for addressing the theory numerically with matrix product states. We apply this technique to explore the spectral properties of the model and the effect of truncating the gauge degrees of freedom to a small finite dimension. In particular, we determine the scaling exponents for the vector mass. Furthermore, we also compute the entanglement entropy in the ground state and study its scaling towards the continuum limit.

  11. The Lipkin-Meshkov-Glick model from the perspective of the SU(1,1) Richardson-Gaudin models

    International Nuclear Information System (INIS)

    Lerma-H, Sergio; Dukelsky, Jorge

    2014-01-01

    Originally introduced in nuclear physics as a numerical laboratory to test different many-body approximation methods, the Lipkin-Meshkov-Glick (LMG) model has received much attention as a simple enough but non-trivial model with many interesting features for areas of physics beyond the nuclear one. In this contribution we look at the LMG model as a particular example of an SU(1,1) Richardson-Gaudin model. The characteristics of the model are analyzed in terms of the behavior of the spectral-parameters or pairons which determine both eigenvalues and eigenfunctions of the model Hamiltonian. The problem of finding these pairons is mathematically equivalent to obtain the equilibrium positions of a set of electric charges moving in a two dimensional space. The electrostatic problems for the different regions of the model parameter space are discussed and linked to the different energy density of states already identified in the LMG spectrum.

  12. Gauge symmetry breaking in the hidden sector of the flipped SU(5)xU(1) superstring model

    Energy Technology Data Exchange (ETDEWEB)

    Antoniadis, I.; Rizos, J. (Centre de Physique Theorique, Ecole Polytechnique, 91 - Palaiseau (France)); Tamvakis, K. (Theoretical Physics Div., Univ. Ioannina (Greece))

    1992-03-26

    We analyze the SU(5)xU(1)'xU(1){sup 4}xSO(10)xSU(4) superstring model with a spontaneously broken hidden sector down to SO(7)xSO(5) taking into account non-renormalizable superpotential terms up to eight order. As a result of the hidden sector breaking the 'exotic' states get a mass and the 'observable' spectrum is composed of the standard three families. In addition, Cabibbo mixing arises at sixth order and an improved fermion mass hierarchy emerges. (orig.).

  13. Probing neutrino and Higgs sectors in SU(2){sub 1} x SU(2){sub 2} x U(1){sub Y} model with lepton-flavor non-universality

    Energy Technology Data Exchange (ETDEWEB)

    Hue, L.T. [Duy Tan University, Institute of Research and Development, Da Nang City (Viet Nam); Vietnam Academy of Science and Technology, Institute of Physics, Hanoi (Viet Nam); Arbuzov, A.B. [Joint Institute for Nuclear Researches, Bogoliubov Laboratory for Theoretical Physics, Dubna (Russian Federation); Ngan, N.T.K. [Cantho University, Department of Physics, Cantho (Viet Nam); Vietnam Academy of Science and Technology, Graduate University of Science and Technology, Hanoi (Viet Nam); Long, H.N. [Ton Duc Thang University, Theoretical Particle Physics and Cosmology Research Group, Ho Chi Minh City (Viet Nam); Ton Duc Thang University, Faculty of Applied Sciences, Ho Chi Minh City (Viet Nam)

    2017-05-15

    The neutrino and Higgs sectors in the SU(2){sub 1} x SU(2){sub 2} x U(1){sub Y} model with lepton-flavor non-universality are discussed. We show that active neutrinos can get Majorana masses from radiative corrections, after adding only new singly charged Higgs bosons. The mechanism for the generation of neutrino masses is the same as in the Zee models. This also gives a hint to solving the dark matter problem based on similar ways discussed recently in many radiative neutrino mass models with dark matter. Except the active neutrinos, the appearance of singly charged Higgs bosons and dark matter does not affect significantly the physical spectrum of all particles in the original model. We indicate this point by investigating the Higgs sector in both cases before and after singly charged scalars are added into it. Many interesting properties of physical Higgs bosons, which were not shown previously, are explored. In particular, the mass matrices of charged and CP-odd Higgs fields are proportional to the coefficient of triple Higgs coupling μ. The mass eigenstates and eigenvalues in the CP-even Higgs sector are also presented. All couplings of the SM-like Higgs boson to normal fermions and gauge bosons are different from the SM predictions by a factor c{sub h}, which must satisfy the recent global fit of experimental data, namely 0.995 < vertical stroke c{sub h} vertical stroke < 1. We have analyzed a more general diagonalization of gauge boson mass matrices, then we show that the ratio of the tangents of the W-W{sup '} and Z-Z{sup '} mixing angles is exactly the cosine of the Weinberg angle, implying that number of parameters is reduced by 1. Signals of new physics from decays of new heavy fermions and Higgs bosons at LHC and constraints of their masses are also discussed. (orig.)

  14. Experimentally verifiable Yang-Mills spin 2 gauge theory of gravity with group U(1) x SU(2)

    International Nuclear Information System (INIS)

    Peng, H.

    1988-01-01

    In this work, a Yang-Mills spin 2 gauge theory of gravity is proposed. Based on both the verification of the helicity 2 property of the SU(2) gauge bosons of the theory and the agreement of the theory with most observational and experimental evidence, the authors argues that the theory is truly a gravitational theory. An internal symmetry group, the eigenvalues of its generators are identical with quantum numbers, characterizes the interactions of a given class. The author demonstrates that the 4-momentum P μ of a fermion field generates the U(1) x SU(2) internal symmetry group for gravity, but not the transformation group T 4 . That particles are classified by mass and spin implies that the U(1) x SU(2), instead of the Poincare group, is a symmetry group of gravity. It is shown that the U(1) x SU(2) group represents the time displacement and rotation in ordinary space. Thereby internal space associated with gravity is identical with Minkowski spacetime, so a gauge potential of gravity carries two space-time indices. Then he verifies that the SU(2) gravitational boson has helicity 2. It is this fact, spin from internal spin, that explains alternatively why the gravitational field is the only field which is characterized by spin 2. The Physical meaning of gauge potentials of gravity is determined by comparing theory with the results of experiments, such as the Collella-Overhauser-Werner (COW) experiment and the Newtonian limit, etc. The gauge potentials this must identify with ordinary gravitational potentials

  15. Ökoküla on nähtamatu / Jonathan Dawson ; tõlk. Kaarel Kressa

    Index Scriptorium Estoniae

    Dawson, Jonathan

    2008-01-01

    Ökoküla ei tähenda üksnes tuulegeneraatoreid ja murukatuseid. Ökokülas on vähemalt sama tähtis, kuidas inimesed omavahel ja loodusega suhtlevad, seletab ülemaailmse ökokogukondade võrgustiku president Jonathan Dawson Shotimaa Findhorni ökokülast

  16. [Analysis of clinical characteristics of traditional Chinese and Western medicine in Professor Jiang Liangduo's theory of "sanjiao meridian stasis"].

    Science.gov (United States)

    Wang, Hai-Yan; Jiang, Liang-Duo; Ma, Qing; Xu, Dong; Tang, Shi-Huan; Luo, Zeng-Gang

    2017-12-01

    In the clinical practice, Professor Jiang Liangduo, a national senior Chinese medicine doctor, has created the theory of "sanjiao meridian stasis" from the theory of meridian dialectics and from the overall state. In this paper, the traditional Chinese medicine and Western medicine clinical characteristics of sanjiao meridian stasis theory which is often used by Professor Jiang Liangduo in the treatment of out-patient syndrome differentiation, were first studied and summarized to investigate its inherent regularity. First, the source of data and research methods were introduced, and then the Traditional Chinese Medicine Inheritance Support System was used with the method of data mining to retrospectively analyze the disease characteristics of Chinese and Western medicine in 279 patients with sanjiao meridian stasis diagnosed by Professor Jiang in 2014. Then the following main conclusions were made after research: sanjiao meridian stasis was more common in women as well as young and middle-aged population. Often manifested by prolonged treatment course, red tongue with yellowishfur, with good correlation between modern Western medicine diagnosis and TCM differentiation syndrome. The symptoms of sanjiao meridian stasis syndrome are mostly of heat syndromes, and middle-aged patients are the most common patients with stasis and stasis of sanjiao. Related information of Western medicine diagnosis can help to diagnose the "sanjiao meridian stasis". Copyright© by the Chinese Pharmaceutical Association.

  17. Phenomenological constraints imposed by the hidden sector in the flipped SU(5)xU(1) superstring model

    Energy Technology Data Exchange (ETDEWEB)

    Leontaris, G.K.; Rizos, J.; Tamvakis, K. (Ioannina Univ. (Greece). Theoretical Physics Div.)

    1990-06-28

    We calculate the trilinear superpotential of the hidden sector of the three generation flipped SU(5)xU(1)xU(1){sup 4}xSO(10)xSU(4) superstring model. We perform a renormalization group analysis of the model taking into account the hidden sector. We find that, in all relevant cases, fractionally charged tetraplets of the hidden SO(6) gauge group are confined at a high scale. Nevertheless, their contribution to the observable U(1) gauge coupling evolution results in a drastic reduction of the available freedom in the values of a{sub 3}(m{sub w}), sin{sup 2}{theta}{sub w} and M{sub x} that allow superunification. (orig.).

  18. Unexpected neuronal protection of SU5416 against 1-Methyl-4-phenylpyridinium ion-induced toxicity via inhibiting neuronal nitric oxide synthase.

    Directory of Open Access Journals (Sweden)

    Wei Cui

    Full Text Available SU5416 was originally designed as a potent and selective inhibitor of vascular endothelial growth factor receptor-2 (VEGFR-2 for cancer therapy. In this study, we have found for the first time that SU5416 unexpectedly prevented 1-methyl-4-phenylpyridinium ion (MPP(+-induced neuronal apoptosis in cerebellar granule neurons, and decreased 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP-induced loss of dopaminergic neurons and impairment of swimming behavior in zebrafish in a concentration-dependent manner. However, VEGFR-2 kinase inhibitor II, another specific VEGFR-2 inhibitor, failed to reverse neurotoxicity at the concentration exhibiting anti-angiogenic activity, strongly suggesting that the neuroprotective effect of SU5416 is independent from its anti-angiogenic action. SU5416 potently reversed MPP(+-increased intracellular nitric oxide level with an efficacy similar to 7-nitroindazole, a specific neuronal nitric oxide synthase (nNOS inhibitor. Western blotting analysis showed that SU5416 reduced the elevation of nNOS protein expression induced by MPP(+. Furthermore, SU5416 directly inhibited the enzyme activity of rat cerebellum nNOS with an IC(50 value of 22.7 µM. In addition, knock-down of nNOS expression using short hairpin RNA (shRNA abolished the neuroprotective effects of SU5416 against MPP(+-induced neuronal loss. Our results strongly demonstrate that SU5416 might exert its unexpected neuroprotective effects by concurrently reducing nNOS protein expression and directly inhibiting nNOS enzyme activity. In view of the capability of SU5416 to cross the blood-brain barrier and the safety for human use, our findings further indicate that SU5416 might be a novel drug candidate for neurodegenerative disorders, particularly those associated with NO-mediated neurotoxicity.

  19. Filmiajakirjanike aasta filmi auhind jagati "Sügisballi" ja "Jonathan Austraaliast" vahel / Sulev Keedus ; interv. Jaanus Kulli

    Index Scriptorium Estoniae

    Keedus, Sulev, 1957-

    2008-01-01

    Eesti Filmiajakirjanike Ühing (EFÜ) nimetas 2007.a. filmi auhinna väärilisteks Veiko Õunpuu filmi "Sügisball" ja Sulev Keeduse dokumentaalfilmi "Jonathan Austraaliast". Intervjuu dokumentaalfilmi režissööriga

  20. Couplings in D(2,1;α) superconformal mechanics from the SU(2) perspective

    Energy Technology Data Exchange (ETDEWEB)

    Galajinsky, Anton [Laboratory of Mathematical Physics, Tomsk Polytechnic University,Lenin Ave. 30, 634050 Tomsk (Russian Federation)

    2017-03-09

    Dynamical realizations of the most general N=4 superconformal group in one dimension D(2,1;α) are reconsidered from the perspective of the R-symmetry subgroup SU(2). It is shown that any realization of the R-symmetry subalgebra in some phase space can be extended to a representation of the Lie superalgebra corresponding to D(2,1;α). Novel couplings of arbitrary number of supermultiplets of the type (1,4,3) and (0,4,4) to a single supermultiplet of either the type (3,4,1), or (4,4,0) are constructed. D(2,1;α) superconformal mechanics describing superparticles propagating near the horizon of the extreme Reissner-Nordström-AdS-dS black hole in four and five dimensions is considered. The parameter α is linked to the cosmological constant.

  1. Short Communication

    African Journals Online (AJOL)

    huis

    Short Communication. QTL analysis of production traits on SSC3 in a Large White×Meishan pig resource family. B. Zuo. 1. , Y.Z. Xiong. 1#. , Y.H. Su. 2. , C.Y. Deng. 1. , M.G. Lei. 1. , F.E. Li. 1. , R. Zheng. 1 and S.W. Jiang. 1. 1 Key Laboratory of Swine Genetics and Breeding, Ministry of Agriculture & Key Lab of Agricultural ...

  2. Orbital Mechanics near a Rotating Asteroid Yu Jiang1,2,∗ & Hexi ...

    Indian Academy of Sciences (India)

    The Hamilton function can then be written as (Yu & Baoyin 2012a). H = 1. 2 .... The symplectic structure is a differential exterior 2-form defined on a ..... The disadvantage of Poisson-bracket, Poisson and cohomology forms is unavailable for ...

  3. A new mutant gene su-1 in corn obtained by irradiation with low doses of gamma rays

    International Nuclear Information System (INIS)

    Diaconu, P.

    1993-01-01

    This paper provides a description of a sugar corn mutant obtained by irradiation of wetted kernels of Romanesc de Studina variety with low doses of gamma rays (300 R). This mutant influences the structure of the endosperm similarly to the su-1 genes developed spontaneously which resulted in the corn variety Zea mays saccharata thousands of years ago. Although the mutant is a multiple allele of the su-1 locus in chromosome IV it differs widely from the spontaneous mutant. The length of the ears is much reduced, varying between 4 and 6 cm, with numbers of kernels per ear varying between 45 and 72. Attempts to improve the cob size and the number of kernels by breeding and propagation in an insulated area led to no result. Crossing the mutants with the sugar hybrid Delicious resulted in sugar type progeny which confirms the common position of the mutant gene induced by irradiation and the spontaneous su-1 gene. The progenies of sugar mutant x Delicious are 38-43 % lower in cob vigor and 36-46% lower in kernel number. (author). 2 figs, 2 tab., 16 refs

  4. The su(1, 1) dynamical algebra from the Schroedinger ladder operators for N-dimensional systems: hydrogen atom, Mie-type potential, harmonic oscillator and pseudo-harmonic oscillator

    International Nuclear Information System (INIS)

    Martinez, D; Flores-Urbina, J C; Mota, R D; Granados, V D

    2010-01-01

    We apply the Schroedinger factorization to construct the ladder operators for the hydrogen atom, Mie-type potential, harmonic oscillator and pseudo-harmonic oscillator in arbitrary dimensions. By generalizing these operators we show that the dynamical algebra for these problems is the su(1, 1) Lie algebra.

  5. Estudio de la proteína de membrana de Saccharomyces cerevisiae Rot1: Importancia de su dominio transmembrana

    OpenAIRE

    Martínez Garay, Carlos Andrés

    2016-01-01

    Las proteínas de membranas corresponden a una fracción significativa, entre un 20-30%, del proteoma eucariota y están implicadas en una variedad de funciones celulares. Sin embargo, muchas veces su estudio es complicado, con respecto a sus contrapartes citoplasmáticas, debido principalmente a su naturaleza hidrofóbica. En el presente trabajo se caracterizó a Rot1, una proteína de membrana esencial de Saccharomyces cerevisiae. Esta proteína posee un dominio transmembrana (TM) en su extremo C-t...

  6. Strongest experimental constraints on SU(5)×U(1) supergravity models

    Science.gov (United States)

    Lopez, Jorge L.; Nanopoulos, D. V.; Park, Gye T.; Zichichi, A.

    1994-01-01

    We consider a class of well-motivated string-inspired flipped SU(5) supergravity models which include four supersymmetry-breaking scenarios: no-scale, strict no-scale, dilaton, and special dilaton, such that only three parameters are needed to describe all new phenomena (mt,tanβ,mg~). We show that the CERN LEP precise measurements of the electroweak parameters in the form of the ɛ1 variable and the CLEO II allowed range for B(b-->sγ) are at present the most important experimental constraints on this class of models. For mt>~155 (165) GeV, the ɛ1 constraint [at 90 (95)% C.L.] requires the presence of light charginos (m+/-χ1360 GeV, mq~sγ) constraint excludes a significant fraction of the otherwise allowed region in the (m+/-χ1,tanβ) plane (irrespective of the magnitude of the chargino mass), while future experimental improvements will result in decisive tests of these models. In light of the ɛ1 constraint, we conclude that the outlook for chargino and selectron detection at LEP II and at DESY HERA is quite favorable in this class of models.

  7. SU(5)×U(1)X grand unification with minimal seesaw and Z‧-portal dark matter

    Science.gov (United States)

    Okada, Nobuchika; Okada, Satomi; Raut, Digesh

    2018-05-01

    We propose a grand unified SU (5) × U(1)X model, where the standard SU(5) grand unified theory is supplemented by minimal seesaw and a right-handed neutrino dark matter with an introduction of a global Z2-parity. In the presence of three right-handed neutrinos (RHNs), the model is free from all gauge and mixed-gravitational anomalies. The SU(5) symmetry is broken into the Standard Model (SM) gauge group at MGUT ≃ 4 ×1016GeV in the standard manner, while the U(1)X symmetry breaking occurs at the TeV scale, which generates the TeV-scale mass of the U(1)X gauge boson (Z‧ boson) and the three Majorana RHNs. A unique Z2-odd RHN is stable and serves as the dark matter (DM) in the present Universe, while the remaining two RHNs work to generate the SM neutrino masses through the minimal seesaw. We investigate the Z‧-portal RHN DM scenario in this model context. We find that the constraints from the DM relic abundance, and the Z‧ boson search at the Large Hadron Collider (LHC), and the perturbativity bound on the U(1)X gauge coupling are complementary to narrow down the allowed parameter region in the range of 3.0 ≤mZ‧ [TeV ] ≤ 9.2 for the Z‧ boson mass. The allowed region for mZ‧ ≤ 5TeV will be fully covered by the future LHC experiments. We also briefly discuss the successful implementation of Baryogenesis and cosmological inflation scenarios in the present model.

  8. Retracing the phenomenology of the flipped SU(5)xU(1) superstring model

    Energy Technology Data Exchange (ETDEWEB)

    Rizos, J.; Tamvakis, K. (Ioannina Univ. (Greece). Dept. of Physics)

    1990-11-22

    We study in detail gauge symmetry breaking in the SU(5)xU(1)'xU(1){sup 4}xSO(10)xSO(6) superstring model, solving the D- and F-flatness conditions and taking into account quartic and quintic superpotential terms. We find that, to this order, the model describes two massive generations of quarks and leptons as well as a massless generation expected to receive naturally suppressed masses from higher order non-renormalizable terms. We show that D-flatness restricts the number of massless isodoublets to four. We also extract an inequality relating the top quark mass to M{sub W}. (orig.).

  9. The two-source illusion: How vidding practices changed Jonathan McIntosh's political remix videos [symposium

    Directory of Open Access Journals (Sweden)

    Martin Leduc

    2012-03-01

    Full Text Available In an interview with Henry Jenkins, Jonathan McIntosh named fannish vidding as a key influence on two of his more recent video remixes. I took a more detailed look at precisely how these two videos intertwine vidding practices with those of political remix video (PRV, and to what effect.

  10. Heavy charged leptons in an SU(3)L x U(1)N model

    International Nuclear Information System (INIS)

    Pleitez, V.; Tonasse, M.D.

    1992-12-01

    An SU(3) L x U(1) N model for the electroweak interactions which includes additional heavy charged leptons is considered. These leptons have not strong constraints on their masses since they do not couple in the same way as the lightest leptons to the neutral-currents and also because new contributions to the muon g-2 factor already suppressed because of the massive new vector boson present in this model. (author)

  11. SHORT COMMUNICATION DETERMINATION OF CYPERMETHRIN ...

    African Journals Online (AJOL)

    Preferred Customer

    Spectra-physics SP8810 HPLC, equipped with UV detector; N-1NW revolving evaporator (Tokyo Physics and Chemistry Company, Japan); high-speed homogenizer (German. IKA Company); HY-4 timing multi-oscillator (JiangSu JinSheng Apparatus Factory); T500 electronic balance (ChangShu Testing Apparatus Factory); ...

  12. The simulation research of dissolved nitrogen and phosphorus non-point source pollution in Xiao-Jiang watershed of Three Gorges Reservoir area.

    Science.gov (United States)

    Wu, Lei; Long, Tian-Yu; Li, Chong-Ming

    2010-01-01

    Xiao-jiang, with a basin area of almost 5,276 km(2) and a length of 182.4 km, is located in the center of the Three Gorges Reservoir Area, and is the largest tributary of the central section in Three Gorges Reservoir Area, farmland accounts for a large proportion of Xiao-jiang watershed, and the hilly cropland of purple soil is much of the farmland of the watershed. After the second phase of water storage in the Three Gorges Reservoir, the majority of sub-rivers in the reservoir area experienced eutrophication phenomenon frequently, and non-point source (NPS) pollution has become an important source of pollution in Xiao-jiang Watershed. Because dissolved nitrogen and phosphorus non-point source pollution are related to surface runoff and interflow, using climatic, topographic and land cover data from the internet and research institutes, the Semi-Distributed Land-use Runoff Process (SLURP) hydrological model was introduced to simulate the complete hydrological cycle of the Xiao-jiang Watershed. Based on the SLURP distributed hydrological model, non-point source pollution annual output load models of land use and rural residents were respectively established. Therefore, using GIS technology, considering the losses of dissolved nitrogen and phosphorus in the course of transport, a dissolved non-point source pollution load dynamic model was established by the organic coupling of the SLURP hydrological model and land-use output model. Through the above dynamic model, the annual dissolved non-point source nitrogen and phosphorus pollution output as well as the load in different types were simulated and quantitatively estimated from 2001 to 2008, furthermore, the loads of Xiao-jiang Watershed were calculated and expressed by temporal and spatial distribution in the Three Gorges Reservoir Area. The simulation results show that: the temporal changes of dissolved nitrogen and phosphorus load in the watershed are close to the inter-annual changes of rainfall runoff, and the

  13. Superheavy contributions to FCNC in the flipped SU(5) x U(1)

    Energy Technology Data Exchange (ETDEWEB)

    Gabbiani, F.; Masiero, A.

    1988-08-04

    In the supersymmetric GUT's the presence of the superheavy fields yields new contributions to flavour-changing neutral-current effects at low energy. We analyse this phenomenon in the context of the flipped SU(5) x U(1) superstring (-inspired) model. We show that possibly sizeable flavour leptonic changes (..mu.. -> e..gamma.., ..mu.. -> eeanti e, ..mu..-e conversion in nuclei) are generated. K-anti K, B-anti B mixings and b -> s..gamma.. constrain new couplings at the superlarge scale, which are unrelated to the standard Yukawa coefficients.

  14. On the exact S-matrix from CP sup(n-1) and SU(n) chiral Thirring model

    International Nuclear Information System (INIS)

    Abdalla, E.; Abdalla, M.C.B.

    1980-03-01

    The S-matrix of CP sub(n-1) and SU(n) Thirring model is calculated, perturbatively, up to 2 loops. The calculation shows striking similarities, but the S -matrix has some deviations from the expected exact one. (Author) [pt

  15. The anomalous U(1)_{anom} symmetry and flavors from an SU(5) × SU(5)' GUT in Z_{12-I} orbifold compactification

    Science.gov (United States)

    Kim, Jihn E.; Kyae, Bumseok; Nam, Soonkeon

    2017-12-01

    In string compactifications, frequently the anomalous U(1) gauge symmetry appears which belongs to E_8 × E_8' of the heterotic string. This anomalous U(1) gauge boson obtains mass at the compactification scale (≈ 10^{18 } {GeV}) by absorbing one pseudoscalar (corresponding to the model-independent axion) from the second rank antisymmetric tensor field B_{MN}. Below the compactification scale a global symmetry U(1)_{anom} results whose charge Q_anom is the original gauge U(1) charge. This is the most natural global symmetry, realizing the "invisible" axion. This global symmetry U(1)_{anom} is suitable for a flavor symmetry. In the simplest compactification model with the flipped SU(5) grand unification, all the low energy parameters are calculated in terms of the vacuum expectation values of the standard model singlets.

  16. The 1+1 SU(2) Yang-Mills path integral

    International Nuclear Information System (INIS)

    Swanson, Mark S

    2004-01-01

    The path integral for SU(2) invariant two-dimensional Yang-Mills theory is recast in terms of the chromoelectric field strength by integrating the gauge fields from the theory. Implementing Gauss's law as a constraint in this process induces a topological term in the action that is no longer invariant under large gauge transformations. For the case that the partition function is considered over a circular spatial degree of freedom, it is shown that the effective action of the path integral is quantum mechanically WKB exact and localizes onto a set of chromoelectric zero modes satisfying antiperiodic boundary conditions. Summing over the zero modes yields a partition function that can be reexpressed using the Poisson resummation technique, allowing an easy determination of the energy spectrum, which is found to be identical to that given by other approaches

  17. Super-No-Scale F-SU(5): A dynamic determination of M{sub 1/2} and tan{beta}

    Energy Technology Data Exchange (ETDEWEB)

    Li Tianjun, E-mail: junlt@physics.tamu.edu [George P. and Cynthia W. Mitchell Institute for Fundamental Physics, Texas A and M University, College Station, TX 77843 (United States); Key Laboratory of Frontiers in Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing 100190 (China); Maxin, James A., E-mail: jmaxin@physics.tamu.edu [George P. and Cynthia W. Mitchell Institute for Fundamental Physics, Texas A and M University, College Station, TX 77843 (United States); Nanopoulos, Dimitri V., E-mail: dimitri@physics.tamu.edu [George P. and Cynthia W. Mitchell Institute for Fundamental Physics, Texas A and M University, College Station, TX 77843 (United States); Astroparticle Physics Group, Houston Advanced Research Center (HARC), Mitchell Campus, Woodlands, TX 77381 (United States); Academy of Athens, Division of Natural Sciences, 28 Panepistimiou Avenue, Athens 10679 (Greece); Walker, Joel W., E-mail: jwalker@shsu.edu [Department of Physics, Sam Houston State University, Huntsville, TX 77341 (United States)

    2011-09-20

    We study the Higgs potential in No-Scale F-SU(5), a model built on the tripodal foundations of the F-lipped SU(5)xU(1){sub X} Grand Unified Theory, extra F-theory derived TeV scale vector-like particle multiplets, and the high scale boundary conditions of no-scale supergravity. V{sub min}, the minimum of the potential following radiative electroweak symmetry breaking, is a function at fixed Z-boson mass of the universal gaugino boundary mass M{sub 1/2} and tan{beta}, the ratio of Higgs vacuum expectation values. The so-scale nullification of the bilinear Higgs soft term B{sub {mu}} at the boundary reduces V{sub min}(M{sub 1/2}) to a one-dimensional dependency, which may be secondarily minimized. This 'Super-No-Scale' condition dynamically fixes tan{beta} and M{sub 1/2} at the local minimum minimorum of V{sub min}. Fantastically, the walls of this theoretically established secondary potential coalesce in descent to a striking concurrency with the previously phenomenologically favored 'Golden Point' and 'Golden Strip'.

  18. Salidroside pretreatment attenuates apoptosis and autophagy during hepatic ischemia?reperfusion injury by inhibiting the mitogen-activated protein kinase pathway in mice

    OpenAIRE

    Feng, Jiao; Zhang, Qinghui; Mo, Wenhui; Wu, Liwei; Li, Sainan; Li, Jingjing; Liu, Tong; Xu, Shizan; Fan, Xiaoming; Guo, Chuanyong

    2017-01-01

    Jiao Feng,1,* Qinghui Zhang,2,* Wenhui Mo,3,* Liwei Wu,1 Sainan Li,1 Jingjing Li,1 Tong Liu,1 Shizan Xu,4 Xiaoming Fan,5 Chuanyong Guo1 1Department of Gastroenterology, Shanghai Tenth People’s Hospital, Tongji University School of Medicine, Shanghai, 2Department of Clinical Laboratory, Kunshan First People’s Hospital Affiliated to Jiangsu University, Kunshan, JiangSu, 3Department of Gastroenterology, Minhang Hospital, Fudan University, Shanghai, 4Department of Gastroenter...

  19. Capacidad transactivadora del gen pttg1 y su implicación en tumorigénesis

    OpenAIRE

    Romero Franco, Ana

    2016-01-01

    Falta palabras clave Objetivos: Los objetivos planteados en esta tesis doctoral son los que se enumeran a continuación: 1) Estudiar la capacidad moduladora que ejerce el gen pttg1 sobre la expresión de genes relacionados con el microambiente del tumor, en células inmortalizadas de ratón NIH3T3. 2) Estudiar la capacidad transactivadora del gen pttg1 en células tumorales humanas y establecer nexos con su posible implicación biológica en el desarrollo del tumor. 3) Estudiar el efecto en el de...

  20. Release Notes for Whisper-1.1

    Energy Technology Data Exchange (ETDEWEB)

    Brown, Forrest B. [Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Rising, Michael Evan [Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Alwin, Jennifer Louise [Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

    2017-04-27

    Whisper is a statistical analysis package developed in 2014 to support nuclear criticality safety (NCS) validation [1-3]. It uses the sensitivity profile data for an application as computed by MCNP6 [4-6] along with covariance files [7,8] for the nuclear data to determine a baseline upper-subcritical-limit (USL) for the application. Whisper version 1.0 was first developed and used at LANL in 2014 [3]. During 2015-2016, Whisper was updated to version 1.1 [9] and is to be included with the upcoming release of MCNP6.2. This document describes the Whisper-1.1 package that will be included with the MCNP6.2 release during 2017. Specific details are provided on the computer systems supported, the software quality assurance (SQA) procedures, installation, and testing. This document does not address other important topics, such as the importance of sensitivity-uncertainty (SU) methods to NCS validation, the theory underlying SU methodology, tutorials on the usage of MCNP-Whisper, practical approaches to using SU methodology to support and extend traditional validation, etc. There are over 50 documents included with Whisper-1.1 and available in the MCNP Reference Collection on the MCNP website (mcnp.lanl.gov) that address all of those topics and more. In this document, however, a complete bibliography of relevant MCNP-Whisper references is provided.

  1. Investigation of the Effects of Expectation Values for Radii on the ...

    Indian Academy of Sciences (India)

    mation (NCA) wave functions to calculate expectation values of radii. The transition probability ... 1. Introduction. The optical properties of carbon, nitrogen and oxygen atoms are important in both atmospheric and ...... Zheng, N. W. 1988a, A new outline of atomic theory (Jiang Su Education Press). Zheng, N. W. 1988b, Chin.

  2. Large (g-2)$_{\\mu}$ in SU(5) x U(1) supergravity models

    CERN Document Server

    López, J L; Wang, X

    1994-01-01

    We compute the supersymmetric contribution to the anomalous magnetic moment of the muon within the context of $SU(5)\\times U(1)$ supergravity models. The largest possible contributions to $a^{susy}_\\mu$ occur for the largest allowed values of $\\tan\\beta$ and can easily exceed the present experimentally allowed range, even after the LEP lower bounds on the sparticle masses are imposed. Such $\\tan\\beta$ enhancement implies that $a^{susy}_\\mu$ can greatly exceed both the electroweak contribution ($\\approx1.95\\times10^{-9}$) and the present hadronic uncertainty ($\\approx\\pm1.75\\times10^{-9}$). Therefore, the new E821 Brookhaven experiment (with an expected accuracy of $0.4\\times10^{-9}$) should explore a large fraction (if not all) of the parameter space of these models, corresponding to slepton, chargino, and squarks masses as high as 200, 300, and 1000 GeV respectively. Moreover, contrary to popular belief, the $a^{susy}_\\mu$ contribution can have either sign, depending on the sign of the Higgs mixing parameter...

  3. Generalized permutation symmetry and the flavour problem in SU(2)sub(L)xU(1)

    International Nuclear Information System (INIS)

    Ecker, G.

    1984-01-01

    A generalized permutation group is introduced as a possible horizontal symmetry for SU(2)sub(L)xU(1) gauge theories. It leads to the unique two generation quark mass matrices with a correct prediction for the Cabibbo angle. For three generations the model exhibits spontaneous CP violation, correlates the Kobayashi-Maskawa mixing parameters s 1 and s 3 and predicts an upper bound for the running top quark mass of approximately 45 GeV. The hierarchy of generations is due to a hierarchy of vacuum expectation values rather than of Yukawa coupling constants. (orig.)

  4. 76 FR 31955 - Jonathan and Jayne Chase; Notice of Application Accepted for Filing With the Commission, Intent...

    Science.gov (United States)

    2011-06-02

    .... c. Date filed: July 23, 2010. d. Applicant: Jonathan and Jayne Chase. e. Name of Project: Troy Hydropower Project. f. Location: On the Missisquoi River, in the Town of Troy, Orleans County, Vermont. The... filing and is now ready for environmental analysis. l. Project Description: The Troy Project would...

  5. Flat Directions in Flipped SU(5); 1, All-Order Analysis

    CERN Document Server

    Cleaver, G B; Nanopoulos, Dimitri V

    2001-01-01

    We present a systematic classification of field directions for the string-derived flipped SU(5) model that are D- and F-flat to all orders. Properties of the flipped SU(5) model with field values in these directions are compared to those associated with other flat directions that have been shown to be F-flat to specific finite orders in the superpotential. We discuss the phenomenological Higgs spectrum, and quark and charged-lepton mass textures.

  6. Charge commutation relation approach to composite vector bosons in SU(2)sub(L)xU(1)sub(Y)

    International Nuclear Information System (INIS)

    Yasue, Masaki; Oneda, Sadao.

    1984-09-01

    Under the assumption that the local SU(2)sub(L)xU(1)sub(Y) symmetry is a good symmetry for new resonances, we predict that msub(W)msub(W*)=costhetamsub(Z)msub(Z*) where theta represents the mixing angle between neutral gauge bosons and msub(W), msub(Z), msub(W*) and msub(Z*) are the masses of W, Z, W* and Z*, respectively. W* and Z* are the lowest lying spin one resonances, whose pure states belong to a triplet of SU(2)sub(L). Possible SU(2)sub(L)-singlet state is assumed to be much heavier than W* and Z*. Low energy phenomenology of weak interactions indicates msub(W)--costhetamsub(Z), suggesting msub(W*)--msub(Z*). (author)

  7. The making of S{u00E1mi ethnography : contested authorities and negotiated representations / Kristin Kuutma

    Index Scriptorium Estoniae

    Kuutma, Kristin, 1959-

    2008-01-01

    Vaadeldakse saami autori Johan Turi raamatut Muitalus s{u00E1miid birra (1910) ja selle tõlget taani keelede Emilie Demant Hatti poolt ning uuritakse, millist autoritaarsust ja kultuurilist poeetikat see peegeldab ja millist sotsiaalset ja kultuurilist kriitikat ta edasi arendab

  8. Study of CP(N-1) theta-vacua by cluster simulation of SU(N) quantum spin ladders.

    Science.gov (United States)

    Beard, B B; Pepe, M; Riederer, S; Wiese, U-J

    2005-01-14

    D-theory provides an alternative lattice regularization of the 2D CP(N-1) quantum field theory in which continuous classical fields emerge from the dimensional reduction of discrete SU(N) quantum spins. Spin ladders consisting of n transversely coupled spin chains lead to a CP(N-1) model with a vacuum angle theta=npi. In D-theory no sign problem arises and an efficient cluster algorithm is used to investigate theta-vacuum effects. At theta=pi there is a first order phase transition with spontaneous breaking of charge conjugation symmetry for CP(N-1) models with N>2.

  9. Phenomenological implications of the flipped SU(5) x U(1) superstring model

    Energy Technology Data Exchange (ETDEWEB)

    Tamvakis, K. (Physics Dept., Univ. of Ioannina (Greece))

    1991-07-01

    We study in detail gauge symmetry breaking in the SU(5)xU(1)'xU(1){sup 4}xSO(10)xSO(6) superstring model, solving the D and F-flatness conditions and taking into account quartic and quintic superpotential terms. We find that, to this order, the model describes two massive generations of quarks and leptons as well as a massless generation expected to receive naturally suppressed masses from higher order non-renormalizable terms. D and F-flatness restricts the number of massless isodoublets to four. We solve the coupled renormalization group equations for the gauge and Yukawa couplings in the two-loop approximation and obtain the top-quark mass as a function of two parameters of the model which could be chosen to be ratios of singlet v.e.v's associated with the surplus (U(1)){sup 4} breaking. We obtain a heavy top-quark with 150GeV {<=} m{sub 1} < 200GeV, for most part of the parameter space, while lower values are possible only in a very small extermal region. We also compute the allowed range of unification parameters (M{sub x}, sin{sup 2} {theta}{sub w}, {alpha}{sub 3}(M{sub w})) in the presence of a heavy top quark. (orig.).

  10. Neutrinoless double beta decay in an SU(3)L x U(1)N model

    International Nuclear Information System (INIS)

    Pleitez, V.; Tonasse, M.D.

    1993-01-01

    A model for the electroweak interactions with SU (3) L x U(1) N gauge symmetry is considered. It is shown that, it is the conservation of F = L + B which forbids massive neutrinos and the neutrinoless double beta decay, (β β) On u. Explicit and spontaneous breaking of F imply that the neutrinos have an arbitrary mass and (β β) On u proceeds also with some contributions that do not depend explicitly on the neutrino mass. (author)

  11. Wave Function and Emergent SU(2) Symmetry in the ν_{T}=1 Quantum Hall Bilayer.

    Science.gov (United States)

    Lian, Biao; Zhang, Shou-Cheng

    2018-02-16

    We propose a trial wave function for the quantum Hall bilayer system of total filling factor ν_{T}=1 at a layer distance d to magnetic length ℓ ratio d/ℓ=κ_{c1}≈1.1, where the lowest charged excitation is known to have a level crossing. The wave function has two-particle correlations, which fit well with those in previous numerical studies, and can be viewed as a Bose-Einstein condensate of free excitons formed by composite bosons and anticomposite bosons in different layers. We show the free nature of these excitons indicating an emergent SU(2) symmetry for the composite bosons at d/ℓ=κ_{c1}, which leads to the level crossing in low-lying charged excitations. We further show the overlap between the trial wave function, and the ground state of a small size exact diagonalization is peaked near d/ℓ=κ_{c1}, which supports our theory.

  12. A synthetic combination of mutations, including fs(1)pyrSu(b), rSu(b) and b, causes female sterility and reduces embryonic viability in Drosophila melanogaster

    DEFF Research Database (Denmark)

    Piskur, Jure; Gojkovic, Zoran; Bahn, E.

    1999-01-01

    A Drosophila melangaster mutant, fs(1)pyr(Su(b)), carrying a mutation that maps to the tip of the X chromosome, has been isolated. The mutation, when present alone, does not confer a detectable phenotype. However, this mutation causes female sterility and reduces embryonic viability when combined...

  13. SU9516 Increases α7β1 Integrin and Ameliorates Disease Progression in the mdx Mouse Model of Duchenne Muscular Dystrophy.

    Science.gov (United States)

    Sarathy, Apurva; Wuebbles, Ryan D; Fontelonga, Tatiana M; Tarchione, Ashley R; Mathews Griner, Lesley A; Heredia, Dante J; Nunes, Andreia M; Duan, Suzann; Brewer, Paul D; Van Ry, Tyler; Hennig, Grant W; Gould, Thomas W; Dulcey, Andrés E; Wang, Amy; Xu, Xin; Chen, Catherine Z; Hu, Xin; Zheng, Wei; Southall, Noel; Ferrer, Marc; Marugan, Juan; Burkin, Dean J

    2017-06-07

    Duchenne muscular dystrophy (DMD) is a fatal muscle disease caused by mutations in the dystrophin gene, resulting in a complete loss of the dystrophin protein. Dystrophin is a critical component of the dystrophin glycoprotein complex (DGC), which links laminin in the extracellular matrix to the actin cytoskeleton within myofibers and provides resistance to shear stresses during muscle activity. Loss of dystrophin in DMD patients results in a fragile sarcolemma prone to contraction-induced muscle damage. The α7β1 integrin is a laminin receptor protein complex in skeletal and cardiac muscle and a major modifier of disease progression in DMD. In a muscle cell-based screen for α7 integrin transcriptional enhancers, we identified a small molecule, SU9516, that promoted increased α7β1 integrin expression. Here we show that SU9516 leads to increased α7B integrin in murine C2C12 and human DMD patient myogenic cell lines. Oral administration of SU9516 in the mdx mouse model of DMD increased α7β1 integrin in skeletal muscle, ameliorated pathology, and improved muscle function. We show that these improvements are mediated through SU9516 inhibitory actions on the p65-NF-κB pro-inflammatory and Ste20-related proline alanine rich kinase (SPAK)/OSR1 signaling pathways. This study identifies a first in-class α7 integrin-enhancing small-molecule compound with potential for the treatment of DMD. Copyright © 2017 The American Society of Gene and Cell Therapy. All rights reserved.

  14. [Analyze prescription rules of Professor Jiang Liangduo treatment for abdominal mass based on traditional Chinese medicine inheritance platform].

    Science.gov (United States)

    Lian, Xiao-Xiao; Guo, Xiao-Xia

    2018-01-01

    To investigate the herbal prescription rules of Professor Jiang Liangduo in the treatment of abdominal mass based on the traditional Chinese medicine inheritance support system software (TCMISS) of version 2.5, find out new herbal formulas for the treatment of abdominal mass, and then provide new reference to its traditional Chinese medicine therapy. By the method of retrospective study, one hundred and thirty-two outpatient prescriptions of Professor Jiang for the treatment of abdominal mass were collected to establish a typical database with TCMISS. Four properties, five tastes, channel tropism, frequency count, Chinese herbal prescriptions rules and the new prescriptions were analyzed so as to dig out the prescription rules. There were 57 herbs with a frequency>=15, and then 91 core combinations of 2-5 herbs were evolved and 9 new prescriptions were created. It was found out that these drugs mainly had the effects of liver nourishing and soothing, soft-moist and dredging-tonifying, supporting right and dispeling evil, cooperating with the method of calming the liver and resolving hard lump according to the actual situation. It reflected the thought of treatment based on syndrome differentiation in TCM, and provided a new reference for its clinical treatment and research. Copyright© by the Chinese Pharmaceutical Association.

  15. SU(N) gauge theories in 2+1 dimensions: glueball spectra and k-string tensions

    Energy Technology Data Exchange (ETDEWEB)

    Athenodorou, Andreas [Department of Physics, University of Cyprus,POB 20537, 1678 Nicosia (Cyprus); Computation-based Science and Technology Research Center, The Cyprus Institute,20 Kavafi Str., Nicosia 2121 (Cyprus); Teper, Michael [Rudolf Peierls Centre for Theoretical Physics, University of Oxford,1 Keble Road, Oxford OX1 3NP (United Kingdom)

    2017-02-03

    We calculate the low-lying glueball spectrum and various string tensions in SU(N) lattice gauge theories in 2+1 dimensions, and extrapolate the results to the continuum limit. We do so for for the range N∈[2,16] so as to control the N-dependence with a useful precision. We observe a number of striking near-degeneracies in the various J{sup PC} sectors of the glueball spectrum, in particular between C=+ and C=− states. We calculate the string tensions of flux tubes in a number of representations, and provide evidence that the leading correction to the N-dependence of the k-string tensions is ∝1/N rather than ∝1/N{sup 2}, and that the dominant binding of k fundamental flux tubes into a k-string is via pairwise interactions. We comment on the possible implications of our results for the dynamics of these gauge theories.

  16. Some new contributions to neutrinoless double β-decay in an SU(2)xU(1) model

    International Nuclear Information System (INIS)

    Escobar, C.O.

    1982-11-01

    An SU(2) x U(1) model having both Dirac and Majorana mass terms for the neutrinos, with an extended Higgs sector without natural flavor conservation is considered. Under these conditions, it is shown that for a certain range of the mass parameters of the model, some new contributions become important for the neutrinoless double β-decay (ββ)oν. (Author) [pt

  17. Elu- ja mõtterännakud, minemised ja saatmised / Kaljo Põllu ; interv. Jonathan Roper, Marika Alver

    Index Scriptorium Estoniae

    Põllu, Kaljo, 1934-2010

    2007-01-01

    Kaljo Põllu oma kunstiõpingutest, loomingust, tööst Tartu Ülikooli kunstikabineti juhatajana, käikudest soomeugrilaste juurde, soome-ugri ekpeditsioonide korraldamisest kunstiinstituudis, ekspeditsioonide mõjust üliõpilaste mõtteviisile ja kunstile, rühmitusest Ydi, soomeugrilisusest eemaldumisest. Leedsi ülikooli inglise filoloogia lektor Jonathan Rops on käinud koos EKA üliõpilastega ekspeditsioonidel 1998., 1999. ja 2003. aastal

  18. Morphological Variation in the Imperfect of hewâ in Onqelos and Jonathan

    Directory of Open Access Journals (Sweden)

    Jerome A. Lund

    2018-06-01

    Full Text Available Two morphological types of the imperfect of the verb hewâ appear in Onqelos and Jonathan, namely yihwê and yehê. While the two types distinguish gender in the plural, they do not do so in the singular. Statistically, the waw type is marginal in the second and third persons singular, but well attested in the first person singular. The use of the waw type in the singular appears to be conditioned by stylistic considerations, being employed to give the impression of solemnity. It is suggested that the waw type reflects the language of the proto-targum from which it was retained.

  19. Individual eigenvalue distributions of crossover chiral random matrices and low-energy constants of SU(2) × U(1) lattice gauge theory

    Science.gov (United States)

    Yamamoto, Takuya; Nishigaki, Shinsuke M.

    2018-02-01

    We compute individual distributions of low-lying eigenvalues of a chiral random matrix ensemble interpolating symplectic and unitary symmetry classes by the Nyström-type method of evaluating the Fredholm Pfaffian and resolvents of the quaternion kernel. The one-parameter family of these distributions is shown to fit excellently the Dirac spectra of SU(2) lattice gauge theory with a constant U(1) background or dynamically fluctuating U(1) gauge field, which weakly breaks the pseudoreality of the unperturbed SU(2) Dirac operator. The observed linear dependence of the crossover parameter with the strength of the U(1) perturbations leads to precise determination of the pseudo-scalar decay constant, as well as the chiral condensate in the effective chiral Lagrangian of the AI class.

  20. SU(N) Irreducible Schwinger Bosons

    OpenAIRE

    Mathur, Manu; Raychowdhury, Indrakshi; Anishetty, Ramesh

    2010-01-01

    We construct SU(N) irreducible Schwinger bosons satisfying certain U(N-1) constraints which implement the symmetries of SU(N) Young tableaues. As a result all SU(N) irreducible representations are simple monomials of $(N-1)$ types of SU(N) irreducible Schwinger bosons. Further, we show that these representations are free of multiplicity problems. Thus all SU(N) representations are made as simple as SU(2).

  1. Stravinsky: Symphony in E flat, Op. 1. Firebird-Suite (1919 version / Jonathan Swain

    Index Scriptorium Estoniae

    Swain, Jonathan

    1994-01-01

    Uuest heliplaadist "Stravinsky: Symphony in E flat, Op. 1. Firebird-Suite (1919 version). Royal Philharmonic Orchestra / Dalia Atlas; Symphony - comparative versions: SNO, Gibson. SRO, Järvi (2/94)(CHAN) CHAN 9236

  2. The prognostic value of the suPARnosticTM ELISA assay in HIV-1 infected individuals is not affected by uPAR promoter polymorphisms

    DEFF Research Database (Denmark)

    Schneider, Uffe; Nielsen, Rikke; Pedersen, Court

    2007-01-01

    . METHODS: DNA samples were collected retrospectively from 145 Danes infected with HIV-1 with known seroconversion times. In addition, plasma was collected retrospectively from 81 of these participants for use in the suPAR analysis. Survival was analysed using Kaplan Meier analysis. RESULTS: Survival...... to A transition at -118 and an A to G transition at -465 comparative to the transcription start site. These promoter transitions did not influence neither the suPAR levels nor patient survival. CONCLUSION: Plasma suPAR levels, as measured by the suPARnosticTM assay, were strongly predictive of survival in ART...

  3. A low-energy compatible SU(4)-type model for vector leptoquarks of mass ≤ 1 TeV

    Science.gov (United States)

    Blumhofer, A.; Lampe, B.

    1999-02-01

    The Standard Model is extended by a SU(2)_L singlet of vector leptoquarks. An additional SU(4) gauge symmetry between right-handed up quarks and right-handed leptons is introduced to render the model renormalizable. The arrangement is made in such a way that no conflict with low energy restrictions is encountered. The SU(2)_L singlet mediates interactions between the right-handed leptons and up type quarks for which only moderate low energy restrictions M_{LQ}/g_{LQ} > few hundred GeV exist. However, it is not a candidate to explain the anomalous HERA data at large Q^2 because theoretical reasons imply that g_{LQ} ≥ g_s which would give a much stronger anomalous HERA effect. We furthermore argue that the inequality g_{LQ} ≥ g_s is a general feature of consistent vector leptoquark models. Although our model is not relevant for HERA, it is interesting per se as a description of leptoquarks of mass ≤ 1 TeV consistent with all low-energy requirements.

  4. The light bound states of N=1 supersymmetric SU(3) Yang-Mills theory on the lattice

    Science.gov (United States)

    Ali, Sajid; Bergner, Georg; Gerber, Henning; Giudice, Pietro; Montvay, Istvan; Münster, Gernot; Piemonte, Stefano; Scior, Philipp

    2018-03-01

    In this article we summarise our results from numerical simulations of N=1 supersymmetric Yang-Mills theory with gauge group SU(3). We use the formulation of Curci and Veneziano with clover-improved Wilson fermions. The masses of various bound states have been obtained at different values of the gluino mass and gauge coupling. Extrapolations to the limit of vanishing gluino mass indicate that the bound states form mass-degenerate supermultiplets.

  5. Virus del dengue de serotipo 1 (DENV-1 de Colombia: su contribución a la presentación del dengue en el departamento de Santander

    Directory of Open Access Journals (Sweden)

    Raquel E. Ocazionez-Jiménez

    2013-08-01

    Full Text Available Introducción. Los cuatro serotipos del virus del dengue circularon en el departamento de Santander entre 1998 y 2008. No existe información sobre el papel del serotipo 1 (DENV-1 en la epidemiología de la enfermedad. Objetivo. Analizar la relación entre el cambio de predominancia del (DENV-1 con su diversificación genética, predominancia de los otros serotipos y presentación del dengue grave. Materiales y métodos. La diversificación genética se estudió por análisis filogenético usando la secuencia del gen E de 12 cepas del virus. Para el análisis se utilizaron datos sobre predominancia delos serotipos obtenidos en estudios previos y datos oficiales de incidencia del dengue. Resultados. Los virus seleccionados se agruparon en el genotipo V junto a (DENV-1 de países de Latinoamérica y se evidenció segregación en cuatro linajes. Los cambios en la predominancia del virus coincidieron con el reemplazo de linaje y esto, a su vez, con incremento en la prevalencia de DENV-2y DENV-3, e incremento del dengue grave. Conclusión. La diversificación genética podría contribuir a cambios de predominancia de (DENV-1, y la relación del virus con el DENV-2 y DENV-3 en situaciones que favorecen la presentación de casos graves. Se necesitan más estudios para precisar el papel de los serotipos en la epidemiología del dengue. doi: http://dx.doi.org/10.7705/biomedica.v33i0.717

  6. A Persistent Reformer: Jonathan Kozol's Work to Promote Equality in America. Adolescent Cultures, School and Society. Volume 59

    Science.gov (United States)

    Ognibene, Richard, Ed.

    2012-01-01

    Jonathan Kozol has been a leading educational critic and social activist since 1967 when "Death at an Early Age," his book about racism in Boston's schools, was published and won a National Book Award. Since then, Kozol has written eleven more books which focus on such issues as segregation in schools and society, poverty, inequitable school…

  7. Constraints from proton decay in the flipped SU(5)xU(1) superstring model

    Energy Technology Data Exchange (ETDEWEB)

    Leontaris, G.K.; Tamvakis, K. (Ioannina Univ. (Greece). Theoretical Physics Div.)

    1991-05-16

    We discuss the constraints the emerge from the existence of dimension-5 baryon-violating operators in the flipped SU(5) x U(1) superstring model. These are constraints on matter field assignments and on singlet VEV values. Although baryon-violating dimension-5 operators that appear as quintic non-renormalizable terms vanish as has been proven before and as we verify here, effective dimension-5 operators resulting from Higgs exchange put non-trivial but feasible constraints on the model. Constraints are also extracted from the presence of higher order non-renormalizable terms that generate such operators which do not a priori vanish. (orig.).

  8. [SU(2)]3 dark matter

    Science.gov (United States)

    Ma, Ernest

    2018-05-01

    An extra SU(2)D gauge factor is added to the well-known left-right extension of the standard model (SM) of quarks and leptons. Under SU(2)L × SU(2)R × SU(2)D, two fermion bidoublets (2 , 1 , 2) and (1 , 2 , 2) are assumed. The resulting model has an automatic dark U (1) symmetry, in the same way that the SM has automatic baryon and lepton U (1) symmetries. Phenomenological implications are discussed, as well as the possible theoretical origins of this proposal.

  9. Jiang Shuqin: a devoted family planning worker.

    Science.gov (United States)

    Zhu, H

    1997-04-01

    This article describes the family planning activities of a barefoot doctor, Jiang Shuqin, who has delivered family planning and other medical services to poor local farmers in China over the past 20 years. The once backward township of Kulongshan in Fengning Manchu Nationality Autonomous County, Chengde City, Hebei Province in North China, where she works, has advanced. Her efforts were recognized at the 1997 National Conference on Family Planning Work. Her first success was in treating a poor woman's sick child, which resulted in such gratitude that her initial reluctance to accept contraception was overcome and she agreed to terminate her pregnancy. Another case involved an elder sister who became pregnant for her infertile sister; when the latter was diagnosed and treated for gynecological disease and subsequently conceived herself, the older sister was convinced to abort her pregnancy. One woman was counseled to delay a pregnancy until treatment for tuberculosis was completed and was happy to avoid birth defects and enjoyed having a healthy baby 3 years later. Ms. Shuqin was known to quickly respond to a home delivery and difficult labor and even saved a baby whose supply of oxygen was limited during a difficult labor. She even performed an operation to stop massive hemorrhaging from a retained placenta while in her 8th month of pregnancy and being barely able to stand on her swollen and painful legs; she completed the operation on her knees. She wrote a paper to county officials on rice production on reclaimed paddy fields that benefitted hundreds of farmers. Her practice expanded to include treatment of animals. Her family complains about her absences, but everyone in the township appreciates her services. The township is proud to be one with no unplanned births.

  10. Q. Shen1, X. Chen1, Jiyune Yi2, DR Jiang1 & YJ Yun3

    Indian Academy of Sciences (India)

    imately six months to cover the 2-yr pulsation cycle of VX Sgr. We used a special phase referencing ... but the υ = 2 line has relatively few maser features, most of which reside in the. Southern and Northern parts. ... stronger masers of both the lines appear, among which the main features reside in the inner shell and show ...

  11. Phenomenology of the spontaneous C P violation in SU(3)L x U(1)Y electroweak models

    International Nuclear Information System (INIS)

    Epele, Luis N.; Gomez Dumm, Daniel A.

    1994-01-01

    This work studies the phenomenological consequence of the spontaneous C P violation in a SU(3) L x U(1) Y model with three Higgs triplets and one sextuplet, which has been recently proposed. Since this C P-violating effects are due to the presence of complex vacuum expectation values in the Higgs sector, our analysis requires a detailed study of the enlarged potential

  12. New approach to high energy SU/sub 2L/ /times/ U1 radiative corrections

    International Nuclear Information System (INIS)

    Ward, B.F.L.

    1988-07-01

    We present a new approach to SU/sub 2L/ /times/ U 1 radiative corrections at high energies. Our approach is based on the infrared summation methods of Yennie, Frautschi and Suura, taken together with the Weinberg-'t Hooft renormalization group equation. Specific processes which have been realized via explicit Monte Carlo algorithms are e + e/sup /minus// → f/bar f/' + n(γ), f = μ, /tau/, d, s, u, c, b or t and e + e/sup /minus// → e + e/sup /minus// + n(γ), where n(γ), denotes multiple photo emission on an event-by-event basis. Exemplary Monte Carlo data are presented. 16 refs., 4 figs

  13. Dicty_cDB: Contig-U15814-1 [Dicty_cDB

    Lifescience Database Archive (English)

    Full Text Available id... 54 0.030 1 ( EU435873 ) Parapalaeosepsis plebeia voucher su35 cytochrome ... 54 0.030 1 ( EU435865 ) Dicranosepsis... unipilosa voucher su24 cytochrome o... 54 0.030 1 ( EU435863 ) Dicranosepsis olfactoria voucher... su22 cytochrome ... 54 0.030 1 ( EU435861 ) Dicranosepsis hamata voucher su20 cy...tochrome oxid... 54 0.030 1 ( EU435858 ) Dicranosepsis crinita voucher su17 cytochrome oxi... 54 0.030 1 ( EU435856 ) Dicranosepsis...use DNA sequence from clone RP23-373N5 on chrom... 52 0.12 1 ( EU435862 ) Dicranosepsis javanica voucher su2

  14. The anomalous U(1){sub anom} symmetry and flavors from an SU(5) x SU(5){sup '} GUT in Z{sub 12-I} orbifold compactification

    Energy Technology Data Exchange (ETDEWEB)

    Kim, Jihn E. [Kyung Hee University, Department of Physics, Seoul (Korea, Republic of); Center for Axion and Precision Physics Research (IBS), Daejeon (Korea, Republic of); Kyae, Bumseok [Pusan National University, Department of Physics, Busan (Korea, Republic of); Nam, Soonkeon [Kyung Hee University, Department of Physics, Seoul (Korea, Republic of)

    2017-12-15

    In string compactifications, frequently the anomalous U(1) gauge symmetry appears which belongs to E{sub 8} x E{sub 8}{sup '} of the heterotic string. This anomalous U(1) gauge boson obtains mass at the compactification scale (∼ 10{sup 18} GeV) by absorbing one pseudoscalar (corresponding to the model-independent axion) from the second rank antisymmetric tensor field B{sub MN}. Below the compactification scale a global symmetry U(1){sub anom} results whose charge Q{sub anom} is the original gauge U(1) charge. This is the most natural global symmetry, realizing the ''invisible'' axion. This global symmetry U(1){sub anom} is suitable for a flavor symmetry. In the simplest compactification model with the flipped SU(5) grand unification, all the low energy parameters are calculated in terms of the vacuum expectation values of the standard model singlets. (orig.)

  15. Dimensional reduction of U(1) x SU(2) Chern-Simons bosonization: Application to the t - J model

    International Nuclear Information System (INIS)

    Marchetti, P.A.

    1996-09-01

    We perform a dimensional reduction of the U(1) x SU(2) Chern-Simons bosonization and apply it to the t - J model, relevant for high T c superconductors. This procedure yields a decomposition of the electron field into a product of two ''semionic'' fields, i.e. fields obeying Abelian braid statistics with statistics parameter θ = 1/4, one carrying the charge and the other the spin degrees of freedom. A mean field theory is then shown to reproduce correctly the large distance behaviour of the correlation functions of the 1D t - J model at >> J. This result shows that to capture the essential physical properties of the model one needs a specific ''semionic'' form of spin-charge separation. (author). 31 refs

  16. ESTUDIO SINTÉTICO Y CARACTERIZACIÓN POR INFRARROJO DE DERIVADOS 2-(AMINO-1,4-NAFTOQUINONA Y SU EVALUACIÓN ANTIBACTERIANA PRELIMINAR

    Directory of Open Access Journals (Sweden)

    Marlene Lariza Andrade-Guel

    2011-01-01

    Full Text Available Las naftoquinonas son compuestos de origen natural o sintético que han mostrado importantes actividades biológicas, resaltando como agentes antibacterianos, antifúngicos, antimaláricos y anticancerígenos. En el presente trabajo se reportan los resultados de la síntesis utilizando diferentes métodos como la síntesis a temperatura ambiente (STA, síntesis por calentamiento convencional (SCC y síntesis asistida por ultrasonido (SAU de los derivados 2-(amino-1,4-naftoquinona. Se realizó su caracterización por espectroscopía de infrarrojo. Además se determinó su capacidad como agentes antibacterianos frente a las cepas Proteus sp. y Enterococcus faecalis. La mayor actividad lo mostró el derivado 2-bencilamino 1,4-naftoquinona.

  17. Inelastic strong interactions at high energies. Annual progress report, June 1, 1979-May 1, 1980

    International Nuclear Information System (INIS)

    Suranyi, P.

    1980-02-01

    Investigations in the area of Grand Unified Field Theories were begun. Various ways of breaking the SU(5) symmetric theory of Georgi and Glashow were studied. As usual, an approx. 24 of Higgs breaks the symmetry from SU(5) to SU(3)/sub c/xSU(2)xU(1). It was found that an approx. 45 of Higgs is acceptable for breaking the symmetry from SU(3)/sub c/xSU(2)xU(1) to SU(3)/sub c/xU(1)/sub em/. In addition phenomenologically correct quark-lepton mass ratios are obtained by use of renormalization-group techniques if there are 6 generations of particles in the theory. Efforts directed at the development of approximate methods for extracting information from quantum field theories were continued. The quantum mechanics of polynomial potentials as a model for quantum field theories was investigated. A perturbation expansion for the energy levels and wave functions was constructed and has been proven to be convergent for arbitrary values of the coupling constants, in contrast to ordinary perturbation expansions that have a zero radius of convergence. The physical significance of the new perturbation expansions was explored both in the weak and strong coupling limits

  18. Carly L. Crouch & Jonathan Stökl (eds.: In the Name of God. The Bible in the Colonial Discourse of Empire

    Directory of Open Access Journals (Sweden)

    Judith Becker

    2015-11-01

    Full Text Available This contribution offers a review of Carly L. Crouch & Jonathan Stökl (eds.: In the Name of God. The Bible in the Colonial Discourse of Empire, Biblical Interpretation Series 126. Leiden: Brill, 2014. viii and 192 pages, € 98, ISBN 978-900-425-8334.

  19. U(1) x SU(2) Chern-Simons gauge theory of underdoped cuprate superconductors

    International Nuclear Information System (INIS)

    Marchetti, P.A.; Su Zhao-Bin; Yu Lu

    1998-05-01

    The Chern-Simons bosonization with U(1)xSU(2) gauge field is applied to the 2-D t-J model in the limit t>>J, to study the normal state properties of underdoped cuprate superconductors. We prove the existence of an upper bound on the partition function for holons in a spinon background, and we find the optimal spinon configuration saturating the upper bound on average - a coexisting flux phase and s+id-like RVB state. After neglecting the feedback of holon fluctuations on the U(1) field B and spinon fluctuations on the SU(2) field V, the holon field is a fermion and the spinon field is a hard-core boson. Within this approximation we show that the B field produces a π flux phase for the holons, converting them into Dirac-like fermions, while the V field, taking into account the feedback of holons produces a gap for the spinons vanishing in the zero doping limit. The nonlinear σ-model with a mass term describes the crossover from the short-ranged antiferromagnetic (AF) state in doped samples to long range AF order in reference compounds. Moreover, we derive a low-energy effective action in terms of spinons holons and a self-generated U(1) gauge field. Neglecting the gauge fluctuations, the holons are described by the Fermi liquid theory with a Fermi surface consisting of 4 ''half-pockets'' centered at (+-π/2,+-π/2) and one reproduces the results for the electron spectral function obtained in the mean field approximation, in agreement with the photoemission data on underdoped cuprates. The gauge fluctuations are not confining due to coupling to holons, but nevertheless yield an attractive interaction between spinons and holons leading to a bound state with electron quantum numbers. The renormalisation effects due to gauge fluctuations give rise to non-Fermi liquid behaviour for the composite electron, in certain temperature range showing the linear in T resistivity. This formalism provides a new interpretation of the spin gap in the underdoped superconductors

  20. Insulina e glicose como moduladores do desenvolvimento de plântulas de milho doce (Su1 Insulin and glucose as modulators of the development of sweet corn seedling (Su1

    Directory of Open Access Journals (Sweden)

    Luiz Fernando Ganassali Oliveira Júnior

    2009-09-01

    Full Text Available Durante a germinação e o desenvolvimento pós-germinativo de milho, o fluxo metabólico é intenso, ocorrendo síntese e degradação de açúcares (glicose, frutose e sacarose e hidrólise de amido, além da redução da concentração do ácido abscísico (ABA. Acredita-se que altas concentrações de glicose exógena, promovam acúmulo de ABA, proporcionando atraso na germinação e desenvolvimento de plântulas. Concentrações menores, por outro lado, podem ocasionar estímulo na germinação e desenvolvimento. Neste trabalho, foi observado que a glicose (800 µM estimulou a germinação e o desenvolvimento inicial de genótipo de milho comum e retardou, severa ou brandamente, genótipos de milho doce (su1, provavelmente devido às diferentes concentrações endógenas de glicose de cada genótipo. Foi visto, também, que a concentração de 1,2 ηM de insulina foi capaz de estimular o maior desenvolvimento de genótipos de milho comum (UENF 506-8 e doce H43IN e nula para o genótipo doce HDC. Quando adicionada insulina e glicose ao meio, foi obtido efeito aditivo para o desenvolvimento. Esses resultados sugerem que a insulina e glicose apresentam forte influência na germinação e no desenvolvimento de sementes de milho.During germination and development of corn seeds the metabolic flow is intense, the synthesis and degradation of sugars (glucose, fructose and sucrose and hydrolysis of starch, besides to the decrease in abscisic acid (ABA concentration are some of the major events. High concentrations of exogenous glucose are believed to promote accumulation of ABA, causing delay in the germination and development of seedlings, while lower concentrations stimulated the germination and development. In our studies it was verified that 800 µM glucose stimulated the germination and initial development of the common corn genotype and delayed severely or softly for sweet corn (su1 genotypes, probably due to different glucose endogenous

  1. UTC(SU) and EOP(SU) - the only legal reference frames of Russian Federation

    Science.gov (United States)

    Koshelyaevsky, Nikolay B.; Blinov, Igor Yu; Pasynok, Sergey L.

    2015-08-01

    There are two legal time reference frames in Russian Federation. UTC(SU) deals with atomic time and play a role of reference for legal timing through the whole country. The other one, EOP(SU), deals with Earth's orientation parameters and provides the official EOP data for scientific, technical and metrological applications in Russia.The atomic time is based on two essential hardware components: primary Cs fountain standards and ensemble of continuously operating H-masers as a time unit/time scale keeper. Basing on H-maser intercomparison system data, regular H-maser frequency calibration against Cs standards and time algorithm autonomous TA(SU) time scale is maintained by the Main Metrological Center. Since 2013 time unit in TA(SU) is the second (SU) reproduced independently by VNIIFTRI Cs primary standards in accordance to it’s definition in the SI. UTC(SU) is relied on TA(SU) and steering to UTC basing on TWSTFT/GNSS time link data. As a result TA(SU) stability level relative to TT considerably exceeds 1×10-15 for sample time one month and more, RMS[UTC-UTC(SU)] ≤ 3 ns for the period of 2013-2015. UTC(SU) is broadcasted by different national means such as specialized radio and TV stations, NTP servers and GLONASS. Signals of Russian radio stations contains DUT1 and dUT1 values at 0.1s and 0.02s resolution respectively.The definitive EOP(SU) are calculated by the Main Metrological Center basing on composition of the eight independent individual EOP data streams delivered by four Russian analysis centers: VNIIFTRI, Institute of Applied Astronomy, Information-Analytical Center of Russian Space Agency and Analysis Center of Russian Space Agency. The accuracy of ultra-rapid EOP values for 2014 is estimated ≤ 0.0006" for polar motion, ≤ 70 microseconds for UT1-UTC and ≤ 0.0003" for celestial pole offsets respectively.The other VNIIFTRI EOP activities can be grouped in three basic directions:- arrangement and carrying out GNSS and SLR observations at five

  2. Thermodynamics of SU(N) Yang-Mills theories in 2+1 dimensions II. The Deconfined phase

    CERN Document Server

    Caselle, Michele; Feo, Alessandra; Gliozzi, Ferdinando; Gursoy, Umut; Panero, Marco; Schafer, Andreas

    2012-01-01

    We present a non-perturbative study of the equation of state in the deconfined phase of Yang-Mills theories in D=2+1 dimensions. We introduce a holographic model, based on the improved holographic QCD model, from which we derive a non-trivial relation between the order of the deconfinement phase transition and the behavior of the trace of the energy-momentum tensor as a function of the temperature T. We compare the theoretical predictions of this holographic model with a new set of high-precision numerical results from lattice simulations of SU(N) theories with N=2, 3, 4, 5 and 6 colors. The latter reveal that, similarly to the D=3+1 case, the bulk equilibrium thermodynamic quantities (pressure, trace of the energy-momentum tensor, energy density and entropy density) exhibit nearly perfect proportionality to the number of gluons, and can be successfully compared with the holographic predictions in a broad range of temperatures. Finally, we also show that, again similarly to the D=3+1 case, the trace of the en...

  3. N = 1 SU(2) supersymmetric Yang-Mills theory on the lattice with light dynamical Wilson gluinos

    International Nuclear Information System (INIS)

    Demmouche, Kamel

    2009-01-01

    The supersymmetric Yang-Mills (SYM) theory with one supercharge (N=1) and one additional Majorana matter-field represents the simplest model of supersymmetric gauge theory. Similarly to QCD, this model includes gauge fields, gluons, with color gauge group SU(N c ) and fermion fields, describing the gluinos. The non-perturbative dynamical features of strongly coupled supersymmetric theories are of great physical interest. For this reason, many efforts are dedicated to their formulation on the lattice. The lattice regularization provides a powerful tool to investigate non-perturbatively the phenomena occurring in SYM such as confinement and chiral symmetry breaking. In this work we perform numerical simulations of the pure SU(2) SYM theory on large lattices with small Majorana gluino masses down to about m g approx 115 MeV with lattice spacing up to a ≅0.1 fm. The gluino dynamics is simulated by the Two-Step Multi-Boson (TSMB) and the Two-Step Polynomial Hybrid Monte Carlo (TS-PHMC) algorithms. Supersymmetry (SUSY) is broken explicitly by the lattice and the Wilson term and softly by the presence of a non-vanishing gluino mass m g ≠0. However, the recovery of SUSY is expected in the infinite volume continuum limit by tuning the bare parameters to the SUSY point in the parameter space. This scenario is studied by the determination of the low-energy mass spectrum and by means of lattice SUSY Ward-Identities (WIs). (orig.)

  4. Representations of the q-deformed algebras Uq (so2,1) and Uq (so3,1)

    International Nuclear Information System (INIS)

    Gavrilik, O.M.; Klimyk, A.U.

    1993-01-01

    Representations of algebra U q (so 2 ,1) are studied. This algebra is a q-deformation of the universal enveloping algebra U(so 2 ,1) of the Lie algebra of the group SO 0 (2,1) and differs from the quantum algebra U q (SU 1 ,1). Classifications of irreducible representations and of infinitesimally irreducible representations of U q (SU 1 ,1). The sets of irreducible representations and of infinitesimally unitary irreducible representations of the algebra U q (so 3 ,1) are given. We also consider representations of U q (so n ,1) which are of class 1 with respect to subalgebra U q (so n ). (author). 22 refs

  5. Pure classical SU(2) Yang-Mills theory with potentials invariant under a U(1) gauge subgroup

    International Nuclear Information System (INIS)

    Bacry, H.

    1978-07-01

    The present article is devoted to pure SU(2) classical Yang-Mills theories whose potentials are invariant under a U(1) gauge subgroup. Such potentials are shown to be associated with classical Maxwell-like fields with magnetic sources as 't Hooft's monopole is associated with the Dirac magnetic monopole. Conversely, the authors give Yang-Mills potentials corresponding to some Maxwell-like fields, in particular static magnetic fields with emphasis on those with cylindrical symmetry (including the dipole and other multipoles) and the ephemerons corresponding to an instantaneous magnetic multipole

  6. Supersymmetric U boson and the old U(1) problem

    International Nuclear Information System (INIS)

    Kim, B.R.

    1983-01-01

    In the supersymmetric SU(3)xSU(2)xU(1)xUsup(')(1) model the new gauge group Usup(')(1) enforces the introduction of mirror fermions. In this note we address the inverse question. If one starts with SU(3)xSU(2)xU(1) including mirror fermions, what physical arguments other than the supersymmetric require the introduction of a new gauge group Usup(')(1). It turns out that the old U(1) problem is closely related with this question. Further we give an estimate for the upper bound for the parameter of the supersymmetric U boson r and x. (orig.)

  7. String threshold corrections and flipped SU(5)

    Energy Technology Data Exchange (ETDEWEB)

    Antoniadis, I. (Ecole Polytechnique, Centre de Physique Theorique, 91 - Palaiseau (France) Theory Div., CERN, Geneva (Switzerland)); Ellis, J. (Theory Div., CERN, Geneva (Switzerland)); Lacaze, R. (Service de Physique Theorique, CEN-Saclay, 91 - Gif-sur-Yvette (France)); Nanopoulos, D.V. (Center for Theoretical Physics, Dept. of Physics, Texas A and M Univ., College Station, TX (United States) Astroparticle Physics Group, HARC, The Woodlands, TX (United States) Theory Div., CERN, Geneva (Switzerland))

    1991-10-10

    We revise previous calculations of the effective unification scale m{sub SU} at which the extrapolated low-energy gauge couplings should appear to become equal, and we show explicitly how to calculate m{sub SU} in the fermionic construction of four-dimensional strings. In the case of the flipped SU(5) GUT derived from the string, the SU(5) and U(1) couplings defined in the anti Danti R scheme become equal to g{sub SU} at m{sub SU} {approx equal} 1.76 x g{sub SU} x 10{sup 18} GeV. This scale is significantly larger than m{sub GUT}, the scale at which the low-energy SU(3) and SU(2) couplings become equal if extrapolated using the renormalization group equations of the minimal supersymmetric extension of the standard model. The existence of an intermediate SU(5) x U(1) phase could have an observable effect on the calculated value of sin{sup 2}{theta}{sub w}. (orig.).

  8. [Temperature modifies the acute effect of particulate air pollution on mortality in Jiang'an district of Wuhan].

    Science.gov (United States)

    Zhu, Y H; Wu, R; Zhong, P R; Zhu, C H; Ma, L

    2016-06-01

    To analyze the temperature modification effect on acute mortality due to particulate air pollution. Daily non-accidental mortality, cardiovascular mortality, and respiratory mortality data were obtained from Jiang'an District Center for Disease Control and Prevention. Daily meteorological data on mean temperature and relative humidity were collected from China Meteorological Data Sharing Service System. The daily concentration of particulate matter was collected from Wuhan Environmental Monitoring center. By using the stratified time-series models, we analyzed effects of particulate air pollution on mortality under different temperature zone from 2002 to 2010, meanwhile comparing the difference of age, gender and educational level, in Wuhan city of China. High temperature (daily average temperature > 33.4 ℃) obviously enhanced the effect of PM10 on mortality. With 10 μg/m(3) increase in PM10 concentrations, non-accidental, cardiovascular, and respiratory mortality increased 2.95% (95%CI: 1.68%-4.24%), 3.58% (95%CI: 1.72%-5.49%), and 5.07% (95%CI: 2.03%-9.51%) respectively. However, low temperature (daily average temperature respiratory mortality with 3.31% (95% CI: 0.07%-6.64%) increase. At high temperature, PM10 had significantly stronger effect on non-accidental mortality of female aged over 65 and people with high educational level groups. With an increase of 10 μg/m(3), daily non-accidental mortality increased 4.27% (95% CI:2.45%-6.12%), 3.38% (95% CI:1.93%-4.86%) and 3.47% (95% CI:1.79%-5.18%), respectively. Whereas people with low educational level were more susceptible to low temperature. A 10 μg/m(3) increase in PM10 was associated with 2.11% (95% CI: 0.20%-4.04%) for non-accidental mortality. Temperature factor can modify the association between the PM10 level and cause-specific mortality. Moreover, the differences were apparent after considering the age, gender and education groups.

  9. Symmetry breaking of SO(10) and constraints on Higgs potential, (1)

    International Nuclear Information System (INIS)

    Yasue, Masaki.

    1980-08-01

    The symmetry breaking of SO(10) is studied in the tree approximation of the potential for an adjoint (45) representation and a spinorial (16) representation. The potential can break SO(10) down to SU(3)sub(c) x SU(2)sub(L) x U(1). It is not allowed to break SO(10) down to SU(3)sub(c) x U(1)sub(em) via SU(3)sub(c) x SU(2)sub(L) x U(1) even in the presence of a cubic (16) (16*) (45) coupling. Instead, SU(3) x U(1) comes from SU(4) x U(1). The masses for the physical Higgs scalars are calculated in SU(3)sub(c) x SU(2)sub(L) x U(1). The dynamically allowed region of the vacuum expectation values of the (45) is found to be strongly restricted. As a result, SO(6) and SO(4) cannot show up in the course of the breaking. (author)

  10. General U(1)xU(1) F-theory Compactifications and Beyond: Geometry of unHiggsings and novel Matter Structure

    CERN Document Server

    Cvetic, Mirjam; Piragua, Hernan; Taylor, Washington

    2015-01-01

    We construct the general form of an F-theory compactification with two U(1) factors based on a general elliptically fibered Calabi-Yau manifold with Mordell-Weil group of rank two. This construction produces broad classes of models with diverse matter spectra, including many that are not realized in earlier F-theory constructions with U(1)xU(1) gauge symmetry. Generic U(1)xU(1) models can be related to a Higgsed non-Abelian model with gauge group SU(2)xSU(2)xSU(3), SU(2)^3xSU(3), or a subgroup thereof. The nonlocal horizontal divisors of the Mordell-Weil group are replaced with local vertical divisors associated with the Cartan generators of non-Abelian gauge groups from Kodaira singularities. We give a global resolution of codimension two singularities of the Abelian model; we identify the full anomaly free matter content, and match it to the unHiggsed non-Abelian model. The non-Abelian Weierstrass model exhibits a new algebraic description of the singularities in the fibration that results in the first expl...

  11. Calculation of the top quark mass in the flipped SU(5)xU(1) superstring model

    Energy Technology Data Exchange (ETDEWEB)

    Leontaris, G.K.; Rizos, J.; Tamvakis, K. (Ioannina Univ. (Greece). Dept. of Physics)

    1990-11-08

    We present a complete renormalization group calculation of the top-quark mass in the SU(5)xU(1) superstring model. We solve the coupled renormalization group equations for the gauge and Yukawa couplings in the two-loop approximation and obtain the top-quark mass as a function of two parameters of the model which could be chosen to be ratios of singlet VEVs associated with the surplus (U(1)){sup 4} breaking. We obtain a heavy top-quark with 150 GeV{le}m{sub t}<200 GeV, for most part of the parameter space, while lower values are possible only in a very small extremal region. We also compute the allowed range of unification parameters (M{sub x}, sin{sup 2}{theta}{sub w}, {alpha}{sub 3}(M{sub W})) in the presence of a heavy top-quark. (orig.).

  12. Phenomenology of the hierarchical lepton mass spectrum in the flipped SU(5)xU(1) string model

    Energy Technology Data Exchange (ETDEWEB)

    Leontaris, G.K.; Nanopoulos, D.V.

    1988-09-29

    A detailed phenomenological analysis of the lepton mass matrices and their implications in the low energy theory are discussed, within the recently proposed SU(5)xU(1) string model. The unification scale is highly constrained while the Yukawa couplings lie in a natural region. The flavour changing decays ..mu.. -> e..gamma.., ..mu.. -> 3e, ..mu.. -> e are highly suppressed while the depletion in the flux of muon neutrinos reported by the Kamiokande is explained through ..nu../sub ..mu../ reversible ..nu../sub tau/ oscillations.

  13. Electroweak phase transition in the economical 3-3-1 model

    Energy Technology Data Exchange (ETDEWEB)

    Phong, Vo Quoc; Van, Vo Thanh; Minh, Le Hoang [Ho Chi Minh City University of Science, Department of Theoretical Physics, Ho Chi Minh City (Viet Nam); Long, Hoang Ngoc [Vietnamese Academy of Science and Technology, Institute of Physics, Hanoi (Viet Nam)

    2015-07-15

    We consider the EWPT in the economical 3-3-1 (E331) model. Our analysis shows that the EWPT in the model is a sequence of two first-order phase transitions, SU(3) → SU(2) at the TeV scale and SU(2) → U(1) at the 100 GeV scale. The EWPT SU(3) → SU(2) is triggered by the new bosons and the exotic quarks; its strength is about 1-13 if the mass ranges of these new particles are 10{sup 2}-10{sup 3} GeV. The EWPT SU(2) → U(1) is strengthened by only the new bosons; its strength is about 1-1.15 if the mass parts of H{sub 1}{sup 0}, H{sub 2}{sup ±} and Y{sup ±} are in the ranges 10-10{sup 2} GeV. The contributions of H{sub 1}{sup 0} and H{sub 2}{sup ±} to the strengths of both EWPTs may make them sufficiently strong to provide large deviations from thermal equilibrium and B violation necessary for baryogenesis. (orig.)

  14. Closed flux tubes and their string description in D=2+1 SU(N) gauge theories

    International Nuclear Information System (INIS)

    Athenodorou, Andreas; Bringoltz, Barak; Teper, Michael

    2011-08-01

    We carry out lattice calculations of the spectrum of confining flux tubes that wind around a spatial torus of variable length l, in 2+1 dimensions. We compare the energies of the lowest ∝30 states to the free string Nambu-Goto model and to recent results on the universal properties of effective string actions. Our most useful calculations are in SU(6) at a small lattice spacing, which we check is very close to the N→ ∞ continuum limit. We find that the energies, E n (l), are remarkably close to the predictions of the free string Nambu-Goto model, even well below the critical length at which the expansion of the Nambu-Goto energy in powers of 1/l 2 diverges and the series needs to be resummed. Our analysis of the ground state supports the universality of the O(1/l) and the O(1/l 3 ) corrections to σl, and we find that the deviations from Nambu-Goto at small l prefer a leading correction that is O(1/l 7 ), consistent with theoretical expectations. We find that the low-lying states that contain a single phonon excitation are also consistent with the leading O(1/l 7 ) correction dominating down to the smallest values of l. By contrast our analysis of the other light excited states clearly shows that for these states the corrections at smaller l resum to a much smaller effective power. Finally, and in contrast to our recent calculations in D=3+1, we find no evidence for the presence of any non-stringy states that could indicate the excitation of massive flux tube modes. (orig.)

  15. Dark revelations of the [SU(3)]3 and [SU(3)]4 gauge extensions of the standard model

    Science.gov (United States)

    Kownacki, Corey; Ma, Ernest; Pollard, Nicholas; Popov, Oleg; Zakeri, Mohammadreza

    2018-02-01

    Two theoretically well-motivated gauge extensions of the standard model are SU(3)C × SU(3)L × SU(3)R and SU(3)q × SU(3)L × SU(3)l × SU(3)R, where SU(3)q is the same as SU(3)C and SU(3)l is its color leptonic counterpart. Each has three variations, according to how SU(3)R is broken. It is shown here for the first time that a built-in dark U(1)D gauge symmetry exists in all six versions. However, the corresponding symmetry breaking pattern does not reduce properly to that of the standard model, unless an additional Z2‧ symmetry is defined, so that U(1)D ×Z2‧ is broken to Z2 dark parity. The available dark matter candidates in each case include fermions, scalars, as well as vector gauge bosons. This work points to the possible unity of matter with dark matter, the origin of which may not be ad hoc.

  16. Dark revelations of the [SU(3]3 and [SU(3]4 gauge extensions of the standard model

    Directory of Open Access Journals (Sweden)

    Corey Kownacki

    2018-02-01

    Full Text Available Two theoretically well-motivated gauge extensions of the standard model are SU(3C×SU(3L×SU(3R and SU(3q×SU(3L×SU(3l×SU(3R, where SU(3q is the same as SU(3C and SU(3l is its color leptonic counterpart. Each has three variations, according to how SU(3R is broken. It is shown here for the first time that a built-in dark U(1D gauge symmetry exists in all six versions. However, the corresponding symmetry breaking pattern does not reduce properly to that of the standard model, unless an additional Z2′ symmetry is defined, so that U(1D×Z2′ is broken to Z2 dark parity. The available dark matter candidates in each case include fermions, scalars, as well as vector gauge bosons. This work points to the possible unity of matter with dark matter, the origin of which may not be ad hoc.

  17. Supersymmetric flipped SU(5) revitalized

    Energy Technology Data Exchange (ETDEWEB)

    Antoniadis, I.; Ellis, J.; Hagelin, J.S.; Nanopoulos, D.V.

    1987-08-06

    We describe a simple N = 1 supersymmetric GUT based on the group SU(5) x U(1) which has the following virtues: the gauge group is broken down to the SU(3)/sub C/ x SU(2)/sub L/ x U(1)/sub y/ of the standard model using just 10, 10 Higgs representations, and the doublet-triplet mass splitting problem is solved naturally by a very simple missing-partner mechanism. The successful supersymmetric GUT prediction for sin/sup 2/theta/sub w/ can be maintained, whilst there are no fermion mass relations. The gauge group and representation structure of the model may be obtainable from the superstring.

  18. Brahms J. Piano Quartet No 1 in G minor, Op. 25 (orch. Schoenberg) / Jonathan Swain

    Index Scriptorium Estoniae

    Swain, Jonathan

    1991-01-01

    Uuest heliplaadist "Brahms J. Piano Quartet No 1 in G minor, Op. 25 (orch. Schoenberg). Variations and Fugue on a Theme by Händel, Op. 24 (orch, Rubbra). London Symphony Orchestra /Neeme Järvi" Chandos ABTD 1450; CD CHAN 8825 (71 minutes)

  19. Notes on basic materials A (1)

    International Nuclear Information System (INIS)

    Donald, R.

    1977-01-01

    The lecture is in sections entitled: notation and generalities, symmetries (introduction, time development of a system, symmetry principles and conservation laws, parity, charge conjugation, continuous transformations, SU2, the quark model, extensions to SU3 (charm)); relativistic wave equations (general transformations, spin in a relativistic system, spin 1/2 particles, the Dirac equation, projection operators, spin 1 particles, the Proca equation). (U.K.)

  20. Closed flux tubes and their string description in D=2+1 SU(N) gauge theories

    Energy Technology Data Exchange (ETDEWEB)

    Athenodorou, Andreas [Deutsches Elektronen-Synchrotron (DESY), Zeuthen (Germany); Bringoltz, Barak [The Israeli Institute for Advanced Research (IIAR), Rehovot (Israel); Teper, Michael [Oxford Univ. (United Kingdom). Rudolf Peierls Centre for Theoretical Physics

    2011-08-15

    We carry out lattice calculations of the spectrum of confining flux tubes that wind around a spatial torus of variable length l, in 2+1 dimensions. We compare the energies of the lowest {proportional_to}30 states to the free string Nambu-Goto model and to recent results on the universal properties of effective string actions. Our most useful calculations are in SU(6) at a small lattice spacing, which we check is very close to the N{yields} {infinity} continuum limit. We find that the energies, E{sub n}(l), are remarkably close to the predictions of the free string Nambu-Goto model, even well below the critical length at which the expansion of the Nambu-Goto energy in powers of 1/l{sup 2} diverges and the series needs to be resummed. Our analysis of the ground state supports the universality of the O(1/l) and the O(1/l{sup 3}) corrections to {sigma}l, and we find that the deviations from Nambu-Goto at small l prefer a leading correction that is O(1/l{sup 7}), consistent with theoretical expectations. We find that the low-lying states that contain a single phonon excitation are also consistent with the leading O(1/l{sup 7}) correction dominating down to the smallest values of l. By contrast our analysis of the other light excited states clearly shows that for these states the corrections at smaller l resum to a much smaller effective power. Finally, and in contrast to our recent calculations in D=3+1, we find no evidence for the presence of any non-stringy states that could indicate the excitation of massive flux tube modes. (orig.)

  1. Critical behavior at the deconfinement phase phase transition of SU(2) lattice gauge theory in (2+1) dimensions

    International Nuclear Information System (INIS)

    Christensen, J.; Damgaard, P.H.

    1991-01-01

    The finite-temperature deconfinement phase transition of SU(2) lattice gauge theory in (2+1) dimensions is studied by Monte Carlo methods. Comparison is made with the expected form of correlation functions on both sides of the critical point. The critical behavior is compared with expectations based on universality arguments. Attempts are made to extract unbiased values of critical exponents on several lattices sizes. The behavior of Polyakov loops in higher representations of the gauge group is studied close to the phase transition. (orig.)

  2. Vortex-like and string-like solutions for the 2+1 dimensional SU(2) Yang-Mills theory with the Chern-Simons term

    International Nuclear Information System (INIS)

    Teh, R.

    1989-07-01

    Vortex-like and string-like solutions of 2+1 Dim. SU(2) YM theory with the Chern-Simons term are discussed. Two ansatze are constructed which yield respectively analytic Bessel function solutions and elliptic function solutions. The Bessel function solutions are vortex-like and tend to the same vacuum state as the Ginzburg-Landau vortex solution at large ρ. The Jacobi elliptic function solutions are string-like, have finite energy and magnetic flux concentrated along a line in the x 1 - x 2 plane. (author). 18 refs

  3. Critical Arts - Vol 18, No 1 (2004)

    African Journals Online (AJOL)

    Danie Jordaan. Transforming the media: A cultural approach. Lynette Steenveld. The Righteousness of self-centred royals: The world according to Disney animation. Lee Artz. Unifying and Dividing Processes in National Media: The Janus Face of South Africa. Kristin Skare Orgeret. Intellectuals Under Fire. Jonathan Jansen ...

  4. Anti-Pauli blocking in QCD1+1

    International Nuclear Information System (INIS)

    Burkardt, M.; Busch, R.

    1991-02-01

    We investigate the flavor asymmetry of the q bar q sea in a (uu)-proton for QCD 1+1 with SU(2)-color. The excess of bar u over bar d which apparently seems to be in conflict with the exclusion principle is explained by taking the color degrees of freedom into account. By computing color factors for the relevant perturbation theory diagrams we show that the non-abelian sea quarks behave effectively similar to abelian bosons. For the magnitude of the flavor asymmetry of the sea we predict scaling proportional to the ratio of the quark Compton wavelength to the proton radius. We show that the sign of the asymmetry in QCD 1+1 is different from the sign measured in 3+1 dimensions. 9 refs., 1 fig., 1 tab

  5. SU(3) chiral symmetry for baryons

    International Nuclear Information System (INIS)

    Dmitrasinovic, V.

    2011-01-01

    Three-quark nucleon interpolating fields in QCD have well-defined SU L (3)xSU R (3) and U A (1) chiral transformation properties, viz. [(6,3)+(3,6)], [(3,3-bar)+(3-bar,3)], [(8,1)+(1,8)] and their 'mirror' images. It has been shown (phenomenologically) in Ref. [2] that mixing of the [(6,3)+(3,6)] chiral multiplet with one ordinary ('naive') and one 'mirror' field belonging to the [(3,3-bar)+(3-bar,3)], [(8,1)+(1,8)] multiplets can be used to fit the values of the isovector (g A (3) ) and the flavor-singlet (isoscalar) axial coupling (g A (0) ) of the nucleon and then predict the axial F and D coefficients, or vice versa, in reasonable agreement with experiment. In an attempt to derive such mixing from an effective Lagrangian, we construct all SU L (3)xSU R (3) chirally invariant non-derivative one-meson-baryon interactions and then calculate the mixing angles in terms of baryons' masses. It turns out that there are (strong) selection rules: for example, there is only one non-derivative chirally symmetric interaction between J 1/2 fields belonging to the [(6,3)+(3,6)] and the [(3,3-bar)+(3-bar,3)] chiral multiplets, that is also U A (1) symmetric. We also study the chiral interactions of the [(3,3-bar)+(3-bar,3)] and [(8,1)+(1,8)] nucleon fields. Again, there are selection rules that allow only one off-diagonal non-derivative chiral SU L (3)xSU R (3) interaction of this type, that also explicitly breaks the U A (1) symmetry. We use this interaction to calculate the corresponding mixing angles in terms of baryon masses and fit two lowest lying observed nucleon (resonance) masses, thus predicting the third (J = 1/2, I = 3/2)Δ resonance, as well as one or two flavor-singlet Λ hyperon(s), depending on the type of mixing. The effective chiral Lagrangians derived here may be applied to high density matter calculations.

  6. Upper bounds on Higgs and top quark masses in the flipped SU(5)xU(1) superstring model

    Energy Technology Data Exchange (ETDEWEB)

    Durand, L.; Lopez, J.L.

    1989-02-02

    In this letter, we use a simplified method to calculate high-energy unitarity constraints on grand unified broken supersymmetric models. We apply the method to the ''flipped'' SU(5)xU(1) superstring model, obtain the constraints at a grand unified mass scale M/sub G/=4x10/sup 16/ GeV, and then use the renormalization group equations to evolve the constraints to the low-energy mass scale M/sub W/. We find upper bounds on the low-energy superpotential parameters which in turn imply absolute upper bounds on the top quark mass, m/sub t/< or approx.200 GeV, and on the lightest neutral Higgs boson mass, Msub(H/sub 1//sup 0/)< or approx.155 GeV. We also obtain an upper bound on Msub(H/sub 1//sup 0/) as a function of m/sub t/ which shows that for favored values of the ratio of Higgs vacuum expectation values Msub(H/sub 1//sup 0/)< or approx.125 GeV.

  7. Self-consistent calculation of the weak constants in the parity nonconserving nuclear forces. Effective PNC hamiltonian in SU(2)sub(L)xU(1)xSU(3)sub(c). PNC in the πNN vertex

    International Nuclear Information System (INIS)

    Dubovik, V.M.; Zenkin, S.V.

    1983-01-01

    On the basis of the total effective Hamiltonian of the parity nonconserving (PNC) hadron-hadron interactions found within the standard model SU(2)sUb(L)XU(1)xSU(3)sub(c) in all orders of the leading logarithms allowing for the difference of quark mass scales (msub(c)>>msub(u, d, s)) the PNC πNN vertex generating the long-range part of the PNC nuclear forces is considered. The origin and the methods of calculation of various contributions to this vertex with a special attention to possible artifacts of these methods is anatyzed. Within the self-consistence calculational framework partly including the MIT bag model the total value of the constant hsub(π) determining the PNC πNN vertex is evaluated. Value of hsub(π) (approximately 1.3x10 -7 ) is 2-4 times as small as previous estimates and does not contradict the experimental data

  8. String derived exophobic SU(6)×SU(2) GUTs

    International Nuclear Information System (INIS)

    Bernard, Laura; Faraggi, Alon E.; Glasser, Ivan; Rizos, John; Sonmez, Hasan

    2013-01-01

    With the apparent discovery of the Higgs boson, the Standard Model has been confirmed as the theory accounting for all sub-atomic phenomena. This observation lends further credence to the perturbative unification in Grand Unified Theories (GUTs) and string theories. The free fermionic formalism yielded fertile ground for the construction of quasi-realistic heterotic-string models, which correspond to toroidal Z 2 ×Z 2 orbifold compactifications. In this paper we study a new class of heterotic-string models in which the GUT group is SU(6)×SU(2) at the string level. We use our recently developed fishing algorithm to extract an example of a three generation SU(6)×SU(2) GUT model. We explore the phenomenology of the model and show that it contains the required symmetry breaking Higgs representations. We show that the model admits flat directions that produce a Yukawa coupling for a single family. The novel feature of the SU(6)×SU(2) string GUT models is that they produce an additional family universal anomaly free U(1) symmetry, and may remain unbroken below the string scale. The massless spectrum of the model is free of exotic states.

  9. Path representation of su-hat (2){sub k} states II: Operator construction of the fermionic character and spin-1/2 -RSOS factorization

    Energy Technology Data Exchange (ETDEWEB)

    Lamy-Poirier, Joel, E-mail: jlamypoirier@perimeterinstitute.c [Departement de Physique, de Genie Physique et d' Optique, Universite Laval, Quebec, Canada, G1V 0A6 (Canada); Mathieu, Pierre, E-mail: pmathieu@phy.ulaval.c [Departement de Physique, de Genie Physique et d' Optique, Universite Laval, Quebec, Canada, G1V 0A6 (Canada)

    2011-06-01

    This is the second of two articles (independent of each other) devoted to the analysis of the path description of the states in su-hat (2){sub k} WZW models. Here we present a constructive derivation of the fermionic character at level k based on these paths. The starting point is the expression of a path in terms of a sequence of nonlocal (formal) operators acting on the vacuum ground-state path. Within this framework, the key step is the construction of the level-k operator sequences out of those at level-1 by the action of a new type of operators. These actions of operators on operators turn out to have a path interpretation: these paths are precisely the finitized RSOS paths related to the unitary minimal models M(k+1,k+2). We thus unravel - at the level of the path representation of the states - a direct factorization into a k=1 spinon part times a RSOS factor. It is also pointed out that since there are two fermionic forms describing these finite RSOS paths, the resulting fermionic su-hat (2){sub k} characters arise in two versions. Finally, the relation between the present construction and the Nagoya spectral decomposition of the path space is sketched.

  10. Infecção pelo vírus Influenza A (H1N1 de origem suína: como reconhecer, diagnosticar e prevenir How to prevent, recognize and diagnose infection with the swine-origin Influenza A (H1N1 virus in humans

    Directory of Open Access Journals (Sweden)

    Alcyone Artioli Machado

    2009-05-01

    Full Text Available Em março de 2009, houve o início de uma epidemia de gripe no México que, em pouco tempo, levou ao surgimento de casos semelhantes em outros países, alertando as autoridades sanitárias para o risco de uma pandemia. Neste artigo, descrevemos os principais sinais e sintomas da infecção pelo vírus Influenza A (H1N1 de origem suína, as medidas a serem tomadas para os casos suspeitos ou confirmados e como proceder em relação aos contactantes. Comentamos também quais drogas são utilizadas para o tratamento e profilaxia.In March of 2009, a flu epidemic began in Mexico. Shortly thereafter, similar cases appeared in other countries, alerting authorities to the risk of a pandemic. This article details the principal signs and symptoms of infection with the swine-origin Influenza A (H1N1 virus. In addition, the measures to be taken in suspected or confirmed cases are addressed, as are the procedures to follow in relation to contacts. Furthermore, the drugs used in the prophylaxis against and the treatment of infection with the H1N1 virus are described.

  11. New approach to SU2LxU1 radiative corrections in e+e- annihilation processes near the Z0 resonance

    International Nuclear Information System (INIS)

    Jadach, S.; Ward, B.F.L.

    1988-08-01

    We show explicitly how to proceed in the Monte Carlo simulation of SU 2L xU 1 radiative corrections in order to include multiple soft photon emission on an event by event basis. The method is based on the rigorous theory of summing infrared contributions to the respective cross section by Yennie, Frautschi and Suura. Our method is illustrated on the example of initial state bremsstrahlung. (author). 10 refs, 2 figs

  12. LTB-R1: an alternative to swine mycoplasmal pneumoniae control LTB-R1: uma alternativa para o controle da pneumonia micoplásmica suína

    Directory of Open Access Journals (Sweden)

    Fabrício Rochedo Conceição

    2003-11-01

    Full Text Available Mycoplasmal pneumoniae is the main respiratory disease in swine. The most efficient way to control it is through the use of vaccines (bacterins, whose production cost is high. The objective of this work was to develop a new alternative for controlling Swine Mycoplasmal Pneumoniae, based on a recombinant subunit vaccine containing the R1 region of P97 adhesin of Mycoplasma hyopneumoniae fused to the B subunit of the heat-labile enterotoxin of Escherichia coli (rLTB-R1. In this work we report the amplification of the genes, genetic fusion between LTB and R1 coding sequences, cloning, construction of the expression vector, as well as expression and purification of rLTB-R1 in E. coli.A Pneumonia Micoplásmica é a doença respiratória mais importante dos suínos. A forma mais eficaz de controlá-la é mediante a utilização de vacinas (bacterinas, cujo custo de produção é elevado. Uma nova alternativa para o controle desta doença, baseada em uma vacina de subunidade recombinante contendo a região R1 da adesina P97 de Mycoplasma hyopneumoniae fusionada a subunidade B da enterotoxina termolábel de Escherichia coli (rLTB-R1, foi o alvo deste trabalho. Nele abordou-se a amplificação dos genes, a fusão genética entre as seqüências codificadoras para LTB e R1, a clonagem, a construção do vetor de expressão, assim como a expressão em E. coli e purificação da rLTBR1.

  13. Frontiers of Knowledge: An Interview with 2017 Edward Novitski Prize Recipient Jonathan Hodgkin.

    Science.gov (United States)

    Hodgkin, Jonathan

    2017-12-01

    The Genetics Society of America's Edward Novitski Prize recognizes a single experimental accomplishment or a body of work in which an exceptional level of creativity and intellectual ingenuity has been used to design and execute scientific experiments to solve a difficult problem in genetics. The 2017 winner, Jonathan Hodgkin, used elegant genetic studies to unravel the sex determination pathway in Caenorhabditis elegans He inferred the order of genes in the pathway and their modes of regulation using epistasis analyses-a powerful tool that was quickly adopted by other researchers. He expanded the number and use of informational suppressor mutants in C. elegans that are able to act on many genes. He also introduced the use of collections of wild C. elegans to study naturally occurring genetic variation, paving the way for SNP mapping and QTL analysis, as well as studies of hybrid incompatibilities between worm species. His current work focuses on nematode-bacterial interactions and innate immunity. Copyright © 2017 by the Genetics Society of America.

  14. Feyz Kashani and Jonathan Edwards on the Place of Heart in Religious Knowledge

    Directory of Open Access Journals (Sweden)

    Saham Asadinia

    2014-08-01

    Full Text Available This essay seeks to summarize and compare the theological ideas of Jonathan Edwards, a western philosopher, with those of Feyz Kashani, an eastern philosopher. The reason for this study is the numerous conjunctions that are seen in their ideas. These include the harmony of heart and reason in respect to belief, the priority of the heart in the reflection of truth, the belief in centrality of the religion of heart, the necessity of divine grace in the flow of religious knowledge, the emphasis on the esoteric side of religion as opposed to the exoteric side, and the importance of a practical approach to religion. Significant differences also exist between their ideas. For instance, Edwards believes that human nature is sinful and corrupted while Feyz does not believe this is true. Furthermore, Feyz interprets the path of heart to be based on reason, while Edwards has a different point of view.

  15. New narrow boson resonances and SU(4) symmetry: Selection rules, SU(4) mixing, and mass formulas

    International Nuclear Information System (INIS)

    Takasugi, E.; Oneda, S.

    1975-01-01

    General SU(4) sum rules are obtained for bosons in the theoretical framework of asymptotic SU(4), chiral SU(4) direct-product SU(4) charge algebra, and a simple mechanism of SU(4) and chiral SU(4) direct-product SU(4) breaking. The sum rules exhibit a remarkable interplay of the masses, SU(4) mixing angles, and axial-vector matrix elements of 16-plet boson multiplets. Under a particular circumstance (i.e., in the ''ideal'' limit) this interplay produces selection rules which may explain the remarkable stability of the newly found narrow boson resonances. General SU(4) mass formulas and inter-SU(4) -multiplet mass relations are derived and SU(4) mixing parameters are completely determined. Ground state 1 -- and 0 -+ 16-plets are especially discussed and the masses of charmed and uncharmed new members of these multiplets are predicted

  16. miR-1 is increased in pulmonary hypertension and downregulates Kv1.5 channels in rat pulmonary arteries.

    Science.gov (United States)

    Mondejar-Parreño, Gema; Callejo, María; Barreira, Bianca; Morales-Cano, Daniel; Esquivel-Ruiz, Sergio; Moreno, Laura; Cogolludo, Angel; Perez-Vizcaino, Francisco

    2018-05-02

    ■The expression of miR-1 is increased in lungs from the Hyp/Su5416 PAH rat model. ■PASMC from this animal model are more depolarised and show decreased expression and activity of Kv1.5. ■miR-1 directly targets Kv1.5 channels, reduces Kv1.5 activity and induces membrane depolarization. ■Antagomir-1 prevents Kv1.5 channel downregulation and the depolarization induced by hypoxia/Su5416 exposition. Impairment of voltage-dependent potassium channel (Kv) plays a central role in the development of cardiovascular diseases, including pulmonary arterial hypertension (PAH). MicroRNAs (miRNAs) are non-coding RNAs that regulate gene expression by binding to the 3'-UTR region of specific mRNAs. The aim of this study was to analyze the effects of miR-1 on Kv channel function in pulmonary arteries (PA). Kv channel activity was studied in PA from healthy animals transfected with miR-1 or scrambled-miR. Kv currents were studied using the whole-cell configuration of patch-clamp technique. The characterization of the Kv1.5 currents was performed with the selective inhibitor DPO-1. miR-1 expression was increased and Kv1.5 channels were decreased in lungs from a rat model of PAH induced by hypoxia and Su5416. miR-1 transfection increased cell capacitance, reduced Kv1.5 currents and induced membrane depolarization in isolated pulmonary artery smooth muscle cells (PASMCs). Luciferase reporter assay indicated that KCNA5, which encodes Kv1.5 channels, is a direct target gene of miR-1. Incubation of PA with Su5416 and hypoxia (3% O 2 ) increased miR-1 and induced a decline in Kv1.5 currents, which was prevented by antagomiR-1. In conclusion, these data indicate that miR-1 induces PASMC hypertrophy and reduces the activity and expression of Kv channels, suggesting a pathophysiological role in PAH. This article is protected by copyright. All rights reserved. This article is protected by copyright. All rights reserved.

  17. Strong coupling expansion for scattering phases in hamiltonian lattice field theories. Pt. 2. SU(2) gauge theory in (2+1) dimensions

    International Nuclear Information System (INIS)

    Dahmen, B.

    1994-12-01

    A recently proposed method for a strong coupling analysis of scattering phenomena in hamiltonian lattice field theories is applied to the SU(2) Yang-Mills model in (2 + 1) dimensions. The calculation is performed up to second order in the hopping parameter. All relevant quantities that characterize the collision between the lightest glueballs in the elastic region - cross section, phase shifts, resonance parameters - are determined. (orig.)

  18. Minimal Supersymmetric $SU(4) \\to SU(2)_L \\to SU(2)_R$

    CERN Document Server

    King, S F

    1998-01-01

    We present a minimal string-inspired supersymmetric $SU(4) \\times SU(2)_L potential in this model, based on a generalisation of that recently proposed by Dvali, Lazarides and Shafi. The model contains a global U(1) R-symmetry and reduces to the MSSM at low energies. However it improves on the MSSM since it explains the magnitude of its $\\mu$ term and gives a prediction for $\\tan \\beta both `cold' and `hot' dark matter candidates. A period of hybrid inflation above the symmetry breaking scale is also possible in this model. Finally it suggests the existence of `heavy' charge $\\pm e/6$ (colored) and $\\pm e/2$ (color singlet) states.

  19. Intersecting Branes Flip SU(5)

    CERN Document Server

    Ellis, Jonathan Richard; Nanopoulos, Dimitri V; Ellis, John

    2002-01-01

    Within a toroidal orbifold framework, we exhibit intersecting brane-world constructions of flipped SU(5) \\times U(1) GUT models with various numbers of generations, other chiral matter representations and Higgs representations. We exhibit orientifold constructions with integer winding numbers that yield 8 or more conventional SU(5) generations, and orbifold constructions with fractional winding numbers that yield flipped SU(5) \\times U(1) models with just 3 conventional generations. Some of these models have candidates for the 5 and {\\bar 5} Higgs representations needed for electroweak symmetry breaking, but not for the 10 and {\\bar 10} representations needed for GUT symmetry breaking, or vice-versa.

  20. Influence of Jiang Tang Bu Shen Fang on expression of IKKβ mRNA in diabetic rats%降糖补肾方对糖尿病大鼠IKKβ mRNA表达的影响

    Institute of Scientific and Technical Information of China (English)

    范冠杰; 孙晓泽; 唐咸玉; 孙璐; 曾星; 罗广波; 卢绮韵; 温建炫

    2011-01-01

    目的 观察降糖补肾方对小剂量链脲佐菌素(STZ)加高脂饲料诱导的糖尿病模型大鼠肌肉组织IKK激酶β(IKKβ)信使核糖核酸(mRNA)表达的影响.方法 雄性SD大鼠高脂饲料喂养4周后注射小剂量STZ,1周后测大鼠空腹血糖,血糖值>11.1 mmoL/L者为造模成功的大鼠,将造模成功的大鼠随机分为模型组和降糖补肾方干预组,另设阿司匹林对照组和空白对照组,药物干预4周,取大腿肌肉组织,采用聚合酶链反应逆转录RT-PCR技术检测IKKβ mRNA表达水平.结果 模型组IKKβ mRNA表达明显高于空白对照组,是空白对照组的5.098倍(P0.05.结论 降糖补肾方在一定程度上能抑制糖尿病大鼠IKKβ mRNA基因,这可能是降糖补肾方抑制炎症信号通路的传导而发挥其改善胰岛素抵抗治疗糖尿病的机制之一.%Objective To observe the influence of Jiang Tang Bu Shen Fang on the expression of I kappa P kinase (IKKp) mRNA in muscular tissue in diabetic rats induced by low-dose streptozotocin ( STZ) and high-fat diet (HFD). Methods Male SD rats were fed HFD for 4 weeks, and then injected low-dose STZ. After one week the level of fasting plasma glucose was detected in rats and those with higher than 11. 1 mmol/L of level of fasting plasma glucose were successfully modeled. The rats were randomly divided into the model group, low-dose, mid-dose and high-dose Jiang Tang Bu Shen Fang groups (low-dose, mid-dose and high-dose groups), aspirin group and blank group. All groups were intervened by relevant medicinal for 4 weeks. The expression of IKKp mRNA in muscular tissue was detected by using reverse transcription polymerase chain reaction (RT-PCR). Results The expression of IKKp mRNA in the model group was significantly higher than that in the blank group (5.098 times, P 0. 05 compared with that in the model group. Conclusion Jiang Tang Bu Shen Fang can inhibit IKK(3 mRNA to some extent in diabetic rats, which may be one of mechanisms of the

  1. Electricity generation by Enterobacter cloacae SU-1 in mediator less microbial fuel cell

    Energy Technology Data Exchange (ETDEWEB)

    Samrot, Antony V.; Senthilkumar, P.; Pavankumar, K.; Akilandeswari, G.C. [Department of Biotechnology, Sathyabama University, Rajiv Gandhi Salai, Chennai, Tamilnadu (India); Rajalakshmi, N.; Dhathathreyan, K.S. [Center for Fuel Cell Technology ARCI, IITM Research Park, Phase I, 2nd Floor, 6 Kanagam Road, Tharamani, Chennai 600 113, Tamilnadu (India)

    2010-08-15

    We have investigated a Enterobacter cloacae SU-1, bacteria for mediator less microbial fuel cell with different carbon sources and is found to be more effective as the microorganism is able to transfer electrons directly (exo-electrogenic organism) via the cytochromes or the ubiquinone. These carriers of electrons are in form of stable reversible redox couples, not biologically degraded and not toxic to cell. The major advantage of mediator less microbial fuel cells emphasize that additives in the anolyte is not compatible with the purpose of water purification. The anode chamber with the bacteria is maintained under anaerobic conditions so that the bacteria will undergo anaerobic biochemical pathways like Glycolysis, TCA cycle, Electron Transport Chain (ETC) where electrons and protons are released. Here protons are released in TCA cycle and whereas electrons are released from ETC. The mediator less microbial fuel cell delivered an open circuit potential (OCP) of 0.93 V and power of 3 mW/sq cm. During power generation from the microbes, there was a drop in coulombic efficiency in terms of fluctuations during drawing power, as the carbon source is being utilized for the cell growth. (author)

  2. Independent SU(2)-loop variables

    International Nuclear Information System (INIS)

    Loll, R.

    1991-04-01

    We give a reduction procedure for SU(2)-trace variables and introduce a complete set of indepentent, gauge-invariant and almost local loop variables for the configuration space of SU(2)-lattice gauge theory in 2+1 dimensions. (orig.)

  3. SU(5) monopoles, magnetic symmetry and confinement

    International Nuclear Information System (INIS)

    Daniel, M.; Lazarides, G.; Shafi, Q.

    1980-01-01

    The monopoles of the unified SU(5) gauge theory broken down to Hsub(E) = SU(3)sub(c) x U(1)sub(EM) [or to Ksub(E) = SU(3)sub(c) x SU(2) x U(1)sub(γ)], are classified. They belong to representations of a magnetic group Hsub(M)(Ksub(M)), which is found to be isomorphic to Hsub(E)(Ksub(E)). For SU(5) broken down to Hsub(E), there exists a regular and stable monopole which is a colour magnetic triplet, and carries a non-zero abelian magnetic charge. It is suggested that composite operators made out of this monopole and its antiparticle fields develop a non-zero vacuum expectation value, and so lead to a squeezing of the colour electric flux. Finally, we comment on the cosmological production of SU(5) monopoles. (orig.)

  4. Mu ema must roos : [luuletused] / S{u00E1ndor Cso̤ri

    Index Scriptorium Estoniae

    Cso̤ri, S{u00E1ndor

    2004-01-01

    Sisu: Mu ema must roos ; Viinamägi, enne sõda ; Su lauba hämarusest ; Cantata profana ; Kolmandal päeval hakkas sadama lund ; Ema jutt ; Lume mälestus ; Lampide ja rusikate ette ; Kümnes õhtu ; Jutustab koit ; Oleksid kehv taevaelanik ; Päikesevalgus ja must öine põldmari ; Kiri põhjast ; Öösel koputab moon ; Keegi su sõber ; Rajan endale teed ; Ülestunnistus Linnale ; Lesknaised tantsivad ; Värvimata jäänud silmalaugude eleegia ; 1956. aasta novembri mälestuseks ; Vihane tund ; Sel ajal jaanuaris. Eluloolisi andmeid autori kohta lk. 389-391

  5. Your Child's Development: 1 Month

    Science.gov (United States)

    ... Child’s Development: 1 Month Print en español El desarrollo de su hijo: 1 mes Have you ever ... lying on the tummy, holds head up briefly Social and Emotional Development recognizes mother's voice when upset, ...

  6. A separate SU(2) for the third family: Topflavor

    International Nuclear Information System (INIS)

    Muller, D.J.; Nandi, S.; Univ. of Texas, Austin, TX

    1996-01-01

    The authors consider the extended electroweak gauge group SU(2) 1 xSU(2) x xU(1) Y where the first and second families of fermions couple to SU(2) 1 while the third family couples to SU(2) 2 . Bounds based on precision electroweak observables and heavy gauge boson searches are placed on the new parameters of the theory. The extra gauge bosons can be as light as about a TeV and can be discovered at future colliders such as the NLC and LHC for a wide range of the parameter space. FCNC interactions are also considered

  7. Black holes and gravitating axially symmetric non-abelian solitons in d 3+1 and d = 4+1

    International Nuclear Information System (INIS)

    Radu, Eugen; Shnir, Yasha; Tchrakian, D. H.

    2010-01-01

    We construct static, asymptotically flat solutions of SU(2) Einstein-Yang-Mills (EYM) theory in 4+1 dimensions, subject to bi-azimuthal symmetry. The results are compared with similar solutions of the SU(2) Yang--Mills--dilaton (YMd) model. Both particle-like and black hole solutions are considered.

  8. An SU(3)xU(1) theory of weak-electromagnetic interactions with charged boson mixing

    International Nuclear Information System (INIS)

    Singer, M.

    1978-01-01

    An SU(3)xU(1) gauge theory of weak electromagnetic interactions is proposed in which the charged bosons mix with each other. The model naturally ensures e-μ and quark-lepton universality in couplings, and the charged boson mixing permits an equal number of leptons and quark flavours. There are no new stable leptons. All the fermions are placed in triplets and singlets and the theory is vector-like and hence free of anomalies. In addition one of the charged bosons can have a mass less than 43 GeV. Discrete symmetries and specific choices for Higgs fields are postulated to obtain the appropriate boson and fermion masses. Calculations for the decay of the tau particle, which is described as a heavy electron, are given. Multimuon events are discussed as are neutrino neutral currents. Calculations are also given for testing asymmetries in e-hadron scattering due to weak electron neutral currents along with other phenomenology of the model

  9. Emerging Forms of the Part II of Jonathan Swift's Novel “Gulliver’s Travels”

    Directory of Open Access Journals (Sweden)

    Svitlana Tikhonenko

    2017-11-01

    Full Text Available The article is devoted to the study of grotesque forms in Jonathan Swift's novel "Gulliver’s Travels" based on the text of part II of the novel "A Voyage to Brobdingnag". On the basis of the selected actual material, displays of the grotesque elements in the semantic field of the work’s text are traced. The grotesque world of the novel is the author's model of mankind, in which J. Swift presents his view not only on the state of the modern system of England, but also on the nature of man in general, reveals the peculiarities of the psychology of human nature, especially human socialization. In part II, the author continues to develop a complex and contradictory picture of human existence in front of the reader, the world of giants appears as an ambivalent system in which the features of an ideal society and ideal ruler, in author’s opinion, with the ugly face of man and society, are marvelously combined.

  10. [Jonathan Swift's asylum in Dublin--Ireland's introduction to institutional psychiatry 250 years ago].

    Science.gov (United States)

    Reuber, M

    1995-09-01

    250 years ago, the satirical writer and clergyman Jonathan Swift from Dublin (1667-1745) founded the first Irish lunatic asylum. Rejecting the theories put forward by the English philosopher Thomas Hobbes and the doctor Thomas Willis, he was influenced by the ideas of the Scottish doctor and the "enlightened" thinker John Locke. Swift's St. Patrick's Hospital did not, however, realise a new philosophical concept: architecture and therapeutic approach of the new institution were clearly modelled on the much older Hospital of St. Mary of Bethlehem ( = Bedlam). Despite its conservative conceptual basis, the first institution dedicated to the mentally ill and intellectually subnormal in Ireland became a starting point for the apparantly unstoppable expansion of the, at one time, most comprehensive asylum system in the world. After Swift's Hospital had been enlarged twice at the tax-payers' expense (1778, 1793), the administration decided to relieve the institution by erecting the Richmond Asylum (1810), the first public asylum in Ireland. When this establishment also became overcrowded, in 1817, legislation was passed which led to the establishment of the oldest system of public asylums in Europe.

  11. Closed flux tubes and their string description in D=3+1 SU(N) gauge theories

    Energy Technology Data Exchange (ETDEWEB)

    Athenodorou, Andreas [Deutsches Elektronen-Synchrotron (DESY), Zeuthen (Germany); Bringoltz, Barak [Washington Univ., Seattle, WA (United States). Dept. of Physics; Teper, Michael [Oxford Univ. (United Kingdom). Centre for Theoretical Physics

    2010-08-15

    We calculate the energy spectrum of a confining flux tube that is closed around a spatial torus, as a function of its length l. We do so for various SU(N) gauge theories in 3+1 dimensions, and for various values of spin, parity and longitudinal momentum. We are able to present usefully accurate results for about 20 of the lightest such states, for a range of l that begins close to the (finite volume) deconfining phase transition at l{radical}{sigma} {proportional_to} 1.6, and extends up to l{radical}{sigma}{proportional_to}6 (where {sigma} is the string tension). We find that most of these low-lying states are well described by the spectrum of the Nambu-Goto free string theory in flat space-time. Remarkably, this is so not only at the larger values of l, where the gap between the ground state energy and the low-lying excitations becomes small compared to the mass gap, but also down to much shorter lengths where these excitation energies become large compared to {radical}{sigma}, the flux-tube no longer 'looks' anything like a thin string, and an expansion of the effective string action in powers of 1/l no longer converges. All this is for flux in the fundamental representation. We also calculate the k=2 (anti)symmetric ground states and these show larger corrections at small l. So far all this closely resembles our earlier findings in 2+1 dimensions. However, and in contrast to the situation in D=2+1, we also find that there are some states, with J{sup P}=0{sup -} quantum numbers, that show large deviations from the Nambu-Goto spectrum. We investigate the possibility that (some of) these states may encode the massive modes associated with the internal structure of the flux tube, and we discuss how the precocious free string behaviour of most states constrains the effective string action, on which much interesting theoretical progress has recently been made. (orig.)

  12. Closed flux tubes and their string description in D=3 1 SU(N) gauge theories

    International Nuclear Information System (INIS)

    Athenodorou, Andreas; Bringoltz, Barak; Teper, Michael

    2010-08-01

    We calculate the energy spectrum of a confining flux tube that is closed around a spatial torus, as a function of its length l. We do so for various SU(N) gauge theories in 3+1 dimensions, and for various values of spin, parity and longitudinal momentum. We are able to present usefully accurate results for about 20 of the lightest such states, for a range of l that begins close to the (finite volume) deconfining phase transition at l√σ ∝ 1.6, and extends up to l√σ∝6 (where σ is the string tension). We find that most of these low-lying states are well described by the spectrum of the Nambu-Goto free string theory in flat space-time. Remarkably, this is so not only at the larger values of l, where the gap between the ground state energy and the low-lying excitations becomes small compared to the mass gap, but also down to much shorter lengths where these excitation energies become large compared to √σ, the flux-tube no longer 'looks' anything like a thin string, and an expansion of the effective string action in powers of 1/l no longer converges. All this is for flux in the fundamental representation. We also calculate the k=2 (anti)symmetric ground states and these show larger corrections at small l. So far all this closely resembles our earlier findings in 2+1 dimensions. However, and in contrast to the situation in D=2+1, we also find that there are some states, with J P =0 - quantum numbers, that show large deviations from the Nambu-Goto spectrum. We investigate the possibility that (some of) these states may encode the massive modes associated with the internal structure of the flux tube, and we discuss how the precocious free string behaviour of most states constrains the effective string action, on which much interesting theoretical progress has recently been made. (orig.)

  13. Monte Carlo analysis of the SU(2)xU(1) and U(2) lattice gauge theories at different space-time dimensionalities

    International Nuclear Information System (INIS)

    Baig, M.; Colet, J.

    1986-01-01

    Using Monte Carlo simulations the SU(2)xU(1) lattice gauge theory has been analyzed, which is equivalent for the Wilson action to a U(2) theory, at space-time dimensionalities from d=3 to 5. It has been shown that there exist first-order phase transitions for both d=4 and d=5. A monopole-condensation mechanism seems to be responsible for these phase transitions. At d=3 no phase transitions have been detected. (orig.)

  14. White dwarf axions, PAMELA data, and flipped-SU(5)

    Energy Technology Data Exchange (ETDEWEB)

    Bae, Kyu Jung [Department of Physics and Astronomy and Center for Theoretical Physics, Seoul National University, Seoul 151-747 (Korea, Republic of); Huh, Ji-Haeng [Department of Physics and Astronomy and Center for Theoretical Physics, Seoul National University, Seoul 151-747 (Korea, Republic of)], E-mail: jhhuh@phya.snu.ac.kr; Kim, Jihn E. [Department of Physics and Astronomy and Center for Theoretical Physics, Seoul National University, Seoul 151-747 (Korea, Republic of)], E-mail: jekim@ctp.snu.ac.kr; Kyae, Bumseok [Department of Physics and Astronomy and Center for Theoretical Physics, Seoul National University, Seoul 151-747 (Korea, Republic of)], E-mail: bskyae@gmail.com; Viollier, Raoul D. [Institute of Theoretical Physics and Astrophysics, Department of Physics, University of Cape Town, Private Bag, Rondebosch 7701 (South Africa)

    2009-08-11

    Recently, there are two hints arising from physics beyond the standard model. One is a possible energy loss mechanism due to emission of very weakly interacting light particles from white dwarf stars, with a coupling strength {approx}0.7x10{sup -13}, and another is the high energy positrons observed by the PAMELA satellite experiment. We construct a supersymmetric flipped-SU(5) model, SU(5)xU(1){sub X} with appropriate additional symmetries, [U(1){sub H}]{sub gauge}x[U(1){sub R}xU(1){sub {gamma}}]{sub global}xZ{sub 2}, such that these are explained by a very light electrophilic axion of mass 0.5 meV from the spontaneously broken U(1){sub {gamma}} and two component cold dark matters from Z{sub 2} parity. We show that in the flipped-SU(5) there exists a basic mechanism for allowing excess positrons through the charged SU(5) singlet leptons, but not allowing antiproton excess due to the absence of the SU(5) singlet quarks. We show the discovery potential of the charged SU(5) singlet E at the LHC experiments by observing the electron and positron spectrum. With these symmetries, we also comment on the mass hierarchy between the top and bottom quarks.

  15. Oligomeric recombinant H5 HA1 vaccine produced in bacteria protects ferrets from homologous and heterologous wild-type H5N1 influenza challenge and controls viral loads better than subunit H5N1 vaccine by eliciting high-affinity antibodies.

    Science.gov (United States)

    Verma, Swati; Dimitrova, Milena; Munjal, Ashok; Fontana, Juan; Crevar, Corey J; Carter, Donald M; Ross, Ted M; Khurana, Surender; Golding, Hana

    2012-11-01

    Recombinant hemagglutinin from influenza viruses with pandemic potential can be produced rapidly in various cell substrates. In this study, we compared the functionality and immunogenicity of bacterially produced oligomeric or monomeric HA1 proteins from H5N1 (A/Vietnam/1203/04) with those of the egg-based licensed subunit H5N1 (SU-H5N1) vaccine in ferrets challenged with homologous or heterologous H5N1 highly pathogenic influenza strains. Ferrets were vaccinated twice with the oligomeric or monomeric rHA1 or with SU-H5N1 (Sanofi Pasteur) emulsified with Titermax adjuvant and were challenged with wild-type homologous (A/Vietnam/1203/04; clade 1) or heterologous (A/Whooperswan/Mongolia/244/2005; clade 2.2) virus. Only the oligomeric rHA1 (not the monomeric rHA1) immunogen and the SU-H5N1 vaccine provided protection against the lethality and morbidity of homologous and heterologous highly pathogenic H5N1. Oligomeric rHA1 generated more cross-neutralizing antibodies and higher levels of serum antibody binding to HA1, with stronger avidity and a better IgG/IgM ratio, than monomeric HA1 and SU-H5N1 vaccines, as determined by surface plasmon resonance (SPR). Importantly, viral loads after heterologous H5N1 challenge were more efficiently controlled in ferrets vaccinated with the oligomeric rHA1 immunogen than in SU-H5N1-vaccinated ferrets. The reduction of viral loads in the nasal washes correlated strongly with higher-avidity antibodies to oligomeric rHA1 derived from H5N1 clade 1 and clade 2.2 viruses, as measured by SPR. This is the first study to show the role of antibody avidity for the HA1 globular head domain in reduction of viral loads in the upper respiratory tract, which could significantly reduce viral transmission.

  16. Phase structure of the SU(5) Coleman-Weinberg theory

    International Nuclear Information System (INIS)

    Tkachev, I.I.

    1984-01-01

    The phase structure of the SU(5) Coleman-Weinberg theory in the one-loop approximation is obtained with account of temperature and space-time curvature. We show that the most essential contribution is that from the interaction between 5 and 24 scalar fields which reflects the existence of two strongly different mass scales in the model. A stability boundary of the SU(3) x SU(2) x U(1) phase is found. It is shown that the SU(4) x U(1) phase in the Coleman-Weinberg theory is unstable. (orig.)

  17. Alternative [SU(3]4 model of leptonic color and dark matter

    Directory of Open Access Journals (Sweden)

    Corey Kownacki

    2018-03-01

    Full Text Available The alternative [SU(3]4 model of leptonic color and dark matter is discussed. It unifies at MU∼1014 GeV and has the low-energy subgroup SU(3q×SU(2l×SU(2L×SU(2R×U(1X with (u,hR instead of (u,dR as doublets under SU(2R. It has the built-in global U(1 dark symmetry which is generalized B–L. In analogy to SU(3q quark triplets, it has SU(2l hemion doublets which have half-integral charges and are confined by SU(2l gauge bosons (stickons. In analogy to quarkonia, their vector bound states (hemionia are uniquely suited for exploration at a future e−e+ collider.

  18. Alternative [SU(3)]4 model of leptonic color and dark matter

    Science.gov (United States)

    Kownacki, Corey; Ma, Ernest; Pollard, Nicholas; Popov, Oleg; Zakeri, Mohammadreza

    2018-03-01

    The alternative [ SU (3) ] 4 model of leptonic color and dark matter is discussed. It unifies at MU ∼1014 GeV and has the low-energy subgroup SU(3)q × SU(2)l × SU(2)L × SU(2)R × U(1)X with (u , h) R instead of (u , d) R as doublets under SU(2)R. It has the built-in global U (1) dark symmetry which is generalized B- L. In analogy to SU(3)q quark triplets, it has SU(2)l hemion doublets which have half-integral charges and are confined by SU(2)l gauge bosons (stickons). In analogy to quarkonia, their vector bound states (hemionia) are uniquely suited for exploration at a future e-e+ collider.

  19. Conflict between natural flavor conservation of Higgs couplings and Cabibbo mixing in SU(2)/sub L/ x U (1)

    International Nuclear Information System (INIS)

    Segre, G.; Arthur Weldon, H.

    1980-01-01

    The general problem of conservation of strangeness and other quark flavors by the exchange of several neutral Higgs mesons is investigated in SU (2)/sub L/ x U (1). We find that the horizontal symmetries necessary to enforce this conservation conflict with the known Cabibbo mixing. In particular, if the quarks form an irreducible representation of the horizontal symmetry, the mixing angles are all trivial (i.e. 0 or π/2); if they form a reducible representation, it is possible to have some nontrivial mixing angles, but only if there are several unmixed generations of quarks with exactly the same relative pattern of masses and mixings

  20. [Raamat] / Elina Kalm

    Index Scriptorium Estoniae

    Kalm, Elina

    2007-01-01

    Tutvustus: Stroud, Jonathan. Samarkandi amulett / tlk. Bibi Raid. Tallinn : Pegasus, 2005 ; Stroud, Jonathan. Golemi silm / tlk. Bibi Raid. Tallinn : Pegasus, 2007 ; Stroud, Jonathan. Ptolemaiose värav / tlk. Bibi Raid. Tallinn : Pegasus, 2007. (Bartimaeuse triloogia ; 1-3)

  1. Origin of stratiform sediment-hosted manganese carbonate ore deposits: Examples from Molango, Mexico, and TaoJiang, China

    Science.gov (United States)

    Okita, P.M.; Shanks, Wayne C.

    1992-01-01

    Carbonate and sulfide minerals from the Molango, Mexico, and TaoJiang, China, Mn deposits display similar and distinctive ??34S and ??13C patterns in intervals of manganese carbonate mineralization. ??13C-values for Mn-bearing carbonate range from -17.8 to +0.5??? (PDB), with the most negative values occurring in high-grade ore zones that are composed predominantly of rhodochrosite. In contrast, calcite from below, within and above Mn-carbonate zones at Molango has ??13C???0??? (PDB). Markedly negative ??13C data indicate that a large proportion of the carbon in Mn-carbonates was derived from organic matter oxidation. Diagenetic reactions using MnO2 and SO2-4 to oxidize sedimentary organic matter were the principle causes of such 12C enrichment. Pyrite content and sulfide ?? 34S-values also show distinctive variations. In unmineralized rocks, very negative ??34S-values (avg. < -21??? CDT) and abundant pyrite content suggest that pyrite formed from diagenetic, bacteriogenic sulfate reduction. In contrast, Mn-bearing horizons typically contain only trace amounts of pyrite (e.g., <0.5 wt% S with ??34S-values 34S-enriched, in some cases to nearly the value for contemporaneous seawater. 34S-enriched pyrite from the Mn-carbonate intervals indicates sulfide precipitation in an environment that underwent extensive SO2-4 reduction, and was largely a closed system with regard to exchange of sulfate and dissolved sulfide with normal seawater. The occasional occurrence of 34S-depleted pyrite within Mn-carbonate zones dominated by 34S-enriched pyrite is evidence that closed-system conditions were intermittent and limited to local pore waters and did not involve entire sedimentary basins. Mn-carbonate precipitation may have occluded porosity in the surficial sediments, thus establishing an effective barrier to SO2-4 exchange with overlying seawater. Similar isotopic and mineralogic characteristics from both the Molango and TaoJiang deposits, widely separated in geologic time and

  2. Analysis list: Su(var)205 [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Su(var)205 Adult,Embryo,Larvae + dm3 http://dbarchive.biosciencedbc.jp/kyushu-u/dm3.../target/Su(var)205.1.tsv http://dbarchive.biosciencedbc.jp/kyushu-u/dm3/target/Su(var)205.5.tsv http://dbarc...hive.biosciencedbc.jp/kyushu-u/dm3/target/Su(var)205.10.tsv http://dbarchive.biosciencedbc.jp/kyushu-u/dm3/c...olo/Su(var)205.Adult.tsv,http://dbarchive.biosciencedbc.jp/kyushu-u/dm3/colo/Su(var)205.Embryo.tsv,http:...//dbarchive.biosciencedbc.jp/kyushu-u/dm3/colo/Su(var)205.Larvae.tsv http://dbarchive

  3. Domain walls and perturbation theory in high-temperature gauge theory: SU(2) in 2+1 dimensions

    International Nuclear Information System (INIS)

    Korthals Altes, C.; Michels, A.; Teper, M.; Stephanov, M.

    1997-01-01

    We study the detailed properties of Z 2 domain walls in the deconfined high-temperature phase of the d=2+1 SU(2) gauge theory. These walls are studied both by computer simulations of the lattice theory and by one-loop perturbative calculations. The latter are carried out both in the continuum and on the lattice. We find that leading order perturbation theory reproduces the detailed properties of these domain walls remarkably accurately even at temperatures where the effective dimensionless expansion parameter g 2 /T is close to unity. The quantities studied include the surface tension, the action density profiles, roughening, and the electric screening mass. It is only for the last quantity that we find an exception to the precocious success of perturbation theory. All this shows that, despite the presence of infrared divergences at higher orders, high-T perturbation theory can be an accurate calculational tool. copyright 1997 The American Physical Society

  4. Flavor changing neutral currents, CP violation, and implications for some rare decays in a SU(4)L x U(1)X extension of the standard model

    International Nuclear Information System (INIS)

    Jaramillo, Alejandro; Sanchez, Luis A.

    2011-01-01

    Extensions of the standard model with gauge symmetry SU(3) c x SU(4) L x U(1) X (3-4-1 extensions) where anomaly cancellation takes place between the fermion families (three-family models) predict the existence of two new heavy neutral gauge bosons which transmit flavor changing neutral currents at tree level. In this work, in the context of a three-family 3-4-1 extension which does not contain particles with exotic electric charges, we study the constraints coming from neutral meson mixing on the parameters of the extension associated to tree-level flavor changing neutral current effects. Taking into account experimental measurements of observables related to K and B meson mixing and including new CP-violating phases, we study the resulting bounds for angles and phases in the mixing matrix for the down-quark sector, as well as the implications of these bounds for the modifications in the amplitudes of the clean rare decays K + →π + νν, K L →π 0 νν, K L →π 0 l + l - (l=e, μ) and B d/s →μ + μ - .

  5. Radiative gauge symmetry breaking in supersymmetric flipped SU(5)

    Energy Technology Data Exchange (ETDEWEB)

    Drees, M.

    1988-05-19

    The radiative breaking of the SU(5)xU(1) symmetry in the flipped SU(5) model recently proposed by Antoniadis et al. is studied using renormalization group techniques. It is shown that gaugino masses can only be the dominant source of supersymmetry breaking at the Planck scale if the U(1) gaugino mass M/sub 1/ is at least 10 times larger than the SU(5) gaugino mass M/sub 5/. If M/sub 1/ approx. = M/sub 5/ at the Planck scale, non-vanishing trilinear soft breaking terms ('A-terms') are needed already at the Planck scale. In both cases consequences for the sparticle spectrum at the weak scale are discussed.

  6. An SU(2) x SU(2) symmetric Higgs-Fermion model with staggered fermions

    International Nuclear Information System (INIS)

    Berlin, J.; Heller, U.M.

    1991-01-01

    We have simulated on SU(2)xSU(2) symmetric Higgs-Fermion model with a four component scalar field coupled with a Yukawa type coupling to two flavours of staggered fermions. The results show two qualitatively different behaviours in the broken phase. One for weak coupling where the fermion masses obey the perturbative tree level relation M F =y , and one for strong coupling where the behaviour agrees with a 1/d expansion. (orig.)

  7. Flipped SU(6) from ten dimensions

    Energy Technology Data Exchange (ETDEWEB)

    Panagiotakopoulos, C. (Bartol Research Inst., Univ. of Delaware, Newark, DE (US))

    1990-06-20

    The authors study the compactification of the heterotic supersting on the only known three generation Calabi-Yau space with flux breakings leading to SU(6) {times} U(1) as the gauge group in four dimensions. We compute the massless spectrum and identify the discrete symmetries of the internal space that survive flux breaking. The possible four-dimensional models are classified according to their honest discrete symmetries. The allowed breaking chains of SU(6) {times} U(1) are listed. Model building with SU(6) {times} U(1) is discussed in general and a concrete realistic model is constructed which does not suffer from the gauge hierarchy problem, fast proton decay or any other obvious phenomenological disaster. A distinct experimental signature of this class of models is the presence in the low energy spectrum of vector-like quarks and antiquarks, outside the three known families, with masses of the order of the supersymmetry breaking scale.

  8. On grand unified SU(8)sub(L) x SU(8)sub(R) model

    International Nuclear Information System (INIS)

    Pirogov, Yu.F.

    1980-01-01

    In the model of early chiral grand unification SU(8)sub(L)xSU(8)sub(R) with intermediate symmetry hierarchies the radiation corrections for sinsup(2)thetasub(W)(μ) and α(μ) are calculated and unification mass M 8 is found in the one loop approximation with Higgs fields contribution being neglected. It is shown that there exists a natural hierarchy, leading to the decrease of sinsup(2)thetasub(W)(Msub(W)) down to the value sinsup(2)thetasub(W)=1/5-1/4 and simultaneous decrease of M 8 down to M 8 =(10 6 -10 7 ) GeV as compared with the values when there is no hierarchy [ru

  9. CAVEOLINA-1 implicaciones fisiológicas y patológicas

    Directory of Open Access Journals (Sweden)

    Vanesa Pereira-Prado

    Full Text Available Las caveolas son invaginaciones de la membrana plasmática conformada por proteínas denominadas caveolinas. De las tres isoformas de caveolina la más estudiada en el transcurso de los años es caveolina-1 (cav-1, quien juega un papel importante en la señalización celular y su gen CAV-1 corresponde a la familia de genes supresores tumorales. Debido a su rol dependiente del contexto en el cual se encuentra, la función y participación de cav-1 a nivel tumoral es compleja y aún permanece controvertida. Cav-1 interactúa con una serie de moléculas-receptores que regulan inicialmente los pasos de la transformación celular a la malignidad, participando a su vez en el ciclo celular, la angiogénesis, la remodelación de la matriz extracelular, la proliferación celular, entre otras. El estudio de esta molécula adquiere importancia en función a su utilidad como biomarcador asociado a diagnóstico, pronóstico y posible blanco terapéutico en procesos patológicos.

  10. Nonleptonic decays of 1/2+-baryons and pseudo-connected-line diagrams, 1

    International Nuclear Information System (INIS)

    Abe, Yoshikazu; Fujii, Kanji

    1978-01-01

    Under the SU(4)-20''-spurion dominance in nonleptonic weak decays, we investigate algebraic structures of the effective Hamiltonian H sub(eff) which describes the main features of the nonleptonic weak decays of ordinary baryons. When H sub(eff) is written by using 20'-baryon (1/2 + ) wave function of the form B sub(α)sup([βγ]), one can select out of H sub(eff) two terms which describe most simply the main features of the P-wave amplitudes for ordinary baryons. Only these terms are s-u dual in the sense of 'pseudo-connected-line diagrams' (pseudo-CLD's) obtained by writing CLD's with 4- and 4*-lines corresponding directly to the lower and the upper indices of B sub(α)sup([βγ]). By assuming Lee-Sugawara relation and s-u dual property of the P-wave amplitudes, various relations among ordinary and charmed baryon decays are derived. Comments on the parity-violating amplitudes are also given. (auth.)

  11. Lipid-lowering and antioxidant activities of Jiang-Zhi-Ning in Traditional Chinese Medicine.

    Science.gov (United States)

    Chen, Jianxin; Zhao, Huihui; Yang, Ying; Liu, Bing; Ni, Jian; Wang, Wei

    2011-04-12

    Jiang-Zhi-Ning (JZN) is composed of four Chinese herbs, i.e., Fleeceflower Root, Fructus Crataegi, Folium Nelumbinis and Semen Cassiae. It was used to strengthen blood circulation of coronary artery, arrhythmia and hyperlipidemia. The main objective of this paper is to evaluate lipid-lowering and antioxidant activities of extract and effective fraction of JZN by using in vitro experiments on hyperlipidemic rats. Moreover, in vivo experiments on cells were performed to investigate lipid-lowering and antioxidant activities of effective fraction and active constituents of JZN. Wistar rats with high fat diet-induced hyperlipidemia were used as in vitro models to study biological effects of lipid-lowering and antioxidant activities of extract and effective fraction of JZN. Serum total cholesterol (TC), triglyceride (TG), low-density lipoprotein cholesterol (LDL-C), high-density lipoprotein cholesterol (HDL-C), Coronary Index and Atherogenic Index were investigated to evaluate lipid-lowering effects of extract and effective fraction of JZN. Serum total nitric oxide synthase (NOS), nitric oxide (NO), endothelin-1 (ET-1), malondialdehyde (MDA), superoxide dismutase (SOD) and total antioxidant capacity (T-AOC) were detected to measure antioxidant effects of extract and effective fraction of JZN. Furthermore, oxidized low-density lipoprotein (Ox-LDL) injured human umbilical vein endothelial cell (HUVEC) model was employed as in vivo experiment to study lipid-lowering and antioxidant effects of effective fraction and active constituents of JZN. NO, ET-1, MDA SOD and T-AOC in HUVECs or culture media were investigated to evaluate antioxidant activity of effective fraction and active constituents of JZN. Using human hepatoma cell line Bel-7402, reverse transcription polymerase chain reaction (RT-PCR) technology was performed to investigate cholesterol metabolism effects of effective fraction and active constituents of JZN. Expressions of low density lipoprotein receptor (LDL

  12. Classification of three-family grand unification in string theory. II. The SU(5) and SU(6) models

    International Nuclear Information System (INIS)

    Kakushadze, Z.; Tye, S.H.

    1997-01-01

    Requiring that supersymmetric SU(5) and SU(6) grand unifications in the heterotic string theory must have three chiral families, adjoint (or higher representation) Higgs fields in the grand unified gauge group, and a non-Abelian hidden sector, we construct such string models within the framework of free conformal field theory and asymmetric orbifolds. Within this framework, we construct all such string models via Z 6 asymmetric orbifolds that include a Z 3 outerautomorphism, the latter yielding a level-three current algebra for the grand unification gauge group SU(5) or SU(6). We then classify all such Z 6 asymmetric orbifolds that result in models with a non-Abelian hidden sector. All models classified in this paper have only one adjoint (but no other higher representation) Higgs field in the grand unified gauge group. This Higgs field is neutral under all other gauge symmetries. The list of hidden sectors for three-family SU(6) string models are SU(2), SU(3), and SU(2)circle-times SU(2). In addition to these, three-family SU(5) string models can also have an SU(4) hidden sector. Some of the models have an apparent anomalous U(1) gauge symmetry. copyright 1997 The American Physical Society

  13. A minimal spontaneous CP violation model with small neutrino mass and SU(2) x U(1) x Z3 symmetry

    International Nuclear Information System (INIS)

    Geng, C.Q.; Ng, J.N.

    1988-04-01

    It is shown that spontaneous CP violation and natural flavor conservation can occur in the SU(2) L x U(1) Y model based on two Higgs doublet and one Higgs singlet fields with a Z 3 discrete symmetry. Physical CP nonconservation is purely due to scalar-pseudoscalar mixings. In order for this to be a major source of CP violation a light spin-O boson of mass less than 10 GeV is required. The see-saw mechanism can be implemented to generate small neutrino masses. The model implies a relatively large electric dipole moment for charged leptons and small value for ε'/ε

  14. How supersymmetry naturally suppresses Higgs-boson-mediated baryon-number violation in SU/sub c/(4) x SU/sub L/(2) x SU/sub R/(2) and SO(10)

    International Nuclear Information System (INIS)

    Gipson, J.M.; Marshak, R.E.

    1984-01-01

    The supersymmetric versions of the left-right-symmetric SU/sub C/(4) x SU/sub L/(2) x SU/sub R/(2) Pati-Salam theory and the grand unified SO(10) theory are studied. In the minimal versions of these models the requirement of soft or spontaneous breaking of supersymmetry, together with renormalizibility, leads to an accidental global U(1) symmetry which leads to baryon-number conservation. A necessary condition for this symmetry to be broken is the existence of fields which are antisymmetric in at least two SU/sub C/(4) indices. The introduction of such fields may allow for observable neutron oscillation

  15. Effects of design geometry on SU8 polymer waveguides

    Science.gov (United States)

    Holland, Anthony S.; Balkunje, Vishal S.; Mitchell, Arnan; Austin, Michael W.; Raghunathan, Mukund K.; Kostovski, Gorgi

    2005-02-01

    The spin-on photoresist SU8 from MicroChem has a relatively high refractive index (n=1.57 at 1550nm) compared with other polymers. It is stable and has high optical transmission at optical communication wavelengths. In this paper we study rib waveguides fabricated using SU8 as the core layer and thermoset polymers UV15 (n=1.50 at 1550nm) from Master Bond and NOA61 (n=1.54 at 1550nm) from Gentec as the cladding layers. The rib height is varied from 0.3 to 1.7μm high. This is part of the SU8 layer sandwiched between the cladding layers. The waveguides are tested to determine the effects of varying this geometry for single mode optical transmission. The lengths of the waveguides were 1.5 cm to 5 cm.

  16. Estereotipos Sexuales y su Relación con Conductas Sexuales Riesgosas1,2,3

    Science.gov (United States)

    Pérez-Jiménez, David; Orengo-Aguayo, Rosaura E.

    2012-01-01

    Resumen Los estereotipos sexuales son creencias generalmente aceptadas y poco cuestionadas que podrían contribuir a cómo los hombres y las mujeres debemos expresar nuestra sexualidad. Los objetivos de este estudio eran identificar cuántos hombres y mujeres heterosexuales en Puerto Rico endosaban ciertos estereotipos acerca de la sexualidad masculina y femenina y explorar la relación entre el endoso de estos estereotipos sexuales y las actitudes hacia el condón masculino y su uso en relaciones sexuales vaginales Llevamos a cabo un estudio descriptivo-correlacional mediante el cual le administramos dos escalas, una sobre sexualidad masculina y otra sobre sexualidad femenina a un grupo de 429 personas heterosexuales. Encontramos que los hombres endosaron estereotipos sexuales masculinos y femeninos más que las mujeres y que estos tienden a tener una visión más conservadora respecto a la sexualidad femenina que la que tienen sobre su propia sexualidad. Las mujeres, por otra parte, tienden a ver su propia sexualidad y la sexualidad masculina en términos menos estereotipados y más equitativos. También encontramos que a mayor endoso de creencias tradicionales sobre la sexualidad masculina y femenina, peor la actitud hacia el uso del condón masculino. Sin embargo, el endosar estereotipos sexuales masculinos y/o femeninos no se relacionó con el uso del condón. Estos hallazgos contradicen la literatura que sugiere que estos estereotipos sexuales y de género resultan en conductas sexuales de alto riesgo, lo cual tiene implicaciones importantes para el desarrollo e implementación de programas de prevención. PMID:24575164

  17. J{sub 1x}-J{sub 1y}-J{sub 2} square-lattice anisotropic Heisenberg model

    Energy Technology Data Exchange (ETDEWEB)

    Pires, A.S.T., E-mail: antpires@frisica.ufmg.br

    2017-08-01

    Highlights: • We use the SU(3) Schwinger boson formalism. • We present the phase diagram at zero temperature. • We calculate the quadrupole structure factor. - Abstract: The spin one Heisenberg model with an easy-plane single-ion anisotropy and spatially anisotropic nearest-neighbor coupling, frustrated by a next-nearest neighbor interaction, is studied at zero temperature using a SU(3) Schwinger boson formalism (sometimes also referred to as flavor wave theory) in a mean field approximation. The local constraint is enforced by introducing a Lagrange multiplier. The enlarged Hilbert space of S = 1 spins lead to a nematic phase that is ubiquitous to S = 1 spins with single ion anisotropy. The phase diagram shows two magnetically ordered phase, separated by a quantum paramagnetic (nematic) phase.

  18. Seo et al., Afr J Tradit Complement Altern Med. (2013) 10 (1):113-123

    African Journals Online (AJOL)

    AJTCAM

    huo-tang, Jiin-koka-to, Simultaneous determination. Introduction. Many herbal formulae have been used to prevent and treat various diseases. Such herbal medicines have few side effects and exhibit multiple activities (Zhang et al., 2004; Jiang, ...

  19. On a new approach to the microscopic substantiation of the interacting boson model-1

    International Nuclear Information System (INIS)

    Karadjov, D.; Voronov, V.V.; Kyrchev, G.; Paar, V.

    1990-01-01

    An Lie algebraic approach to the microscopic foundation of interacting boson model-1 (IBM-1) is itemized, treating on an equal footing the SU(6) governed dynamics and the accompanying SU(6) constraints. The introduction of the collective random phase approximation phonon operators as preferred pairs with subsequent enforcement of the relevant SU(6) algebra has enabled: to identify the decoupled phonon subspace as carrier space of the totally symmetric irreducible representation of SU(6); to single out from a microscopic reference Hamiltonian the fragment with the ensuing IBM-1 sd-boson form. Using this approach, the IBM-1 parameters have been calculated for the sequence of even-even 64-70 Zn isotopes. 45 refs.; 2 figs.; 5 tabs

  20. Impacto de la vacunación frente a la gripe (H1N1)2009 en Navarra: comparación de diferentes escenarios

    OpenAIRE

    Jesús Castilla; Marcela Guevara; Manuel García Cenoz; Fátima Irisarri; Maite Arriazu; Aurelio Barricarte; Red de Médicos Centinela; Red de Vigilancia Epidemiológica y Microbiológica de Gripe de Navarra

    2011-01-01

    Fundamento: En 2009 se realizó una campaña de vacunación específica frente a la gripe (H1N1) 2009. El objetivo de este trabajo es evaluar su impacto en Navarra. Métodos: En la cohorte de población no institucionalizada de enfermos crónicos cubiertos por el Servicio Navarro de Salud (N=131.333), asumiendo una efectividad del 100! desde el octavo día tras la administración de la vacuna pandémica, estimamos su impacto en la prevención de casos y de hospitalizaciones por gripe (H1N1) 2009 entre l...

  1. Remarks on broken chiral SU(5) x SU(5) symmetry and B mesons

    International Nuclear Information System (INIS)

    Kim, D.Y.; Sinha, S.N.

    1985-01-01

    In a recent paper, Hatzis has estimated the masses and weak decay constants of b-flavored pseudoscalar mesons in a broken chiral SU(5) x SU(5) symmetry method. The estimated weak decay constant of B meson, f sub(B) f sub(K)(f sub(B)/f sub(K) approximately equal to 1.4) evaluated by Mathur et al. with the quantum chromodynamics (QCD) sum-rule model. We re-examined the problem applying the broken chiral SU(5) x SU(5) symmetry approach using a set of mass formulae. With this method we estimate the symmetry-breaking parameters and decay constants of pseudoscalar mesons. We found a consistent result for the decay constant: f sub(K) < or approximately equal to f sub(D) < or approximately equal to f sub(B). The explicit numerical value of these constants, however, are lower than that of the QCD sum rule. This may be due to the limited validity of the broken chiral symmetry approach for heavy mesons

  2. Brotes escolares de gripe (H1N1 2009 en Cataluña

    Directory of Open Access Journals (Sweden)

    Nuria Torner

    2011-01-01

    Full Text Available A pesar de los avances en el conocimiento del virus de la gripe (H1N1 2009, la eficacia de su transmision entre contactos, asi como la eficacia de las intervenciones no farmacologicas es poco conocida. El objetivo de este trabajo es caracterizar la ocurrencia de brotes confirmados de virus (H1N1 2009 en Cataluna en el ambito escolar durante el periodo pandemico y evaluar las actuaciones llevadas a cabo para su control. Metodos: Se estudio la incidencia de brotes de VGA(H1N12009 de mayo a diciembre 2009. Se calcularon las tasas de ataque en funcion de emision de recomendaciones preventivas y ejecucion de intervenciones. La asociacion entre variables se calculo mediante ¿Ô2, comparacion de medias mediante t-Student y comparacion de proporciones mediante estadistico z , estableciendo el grado de significacion estadistica en ¿¿=0,05. Resultados: En total se notificaron 238 brotes. La TA global fue del 15,5%. Del total de brotes solo se conoce la tasa de ataque de 173 (72,7%, de los cuales 142 (82,1%; p<0,001 tuvieron una TA inferior al 25%. El principal ambito de transmision fue el escolar, donde se produjeron 209 (88%; p<0,001 brotes, de los cuales 187 (78,6%; p<0,001 correspondian a centros educativos. La duracion media de los brotes fue significativamente menor en funcion de la emision de recomendaciones (p=0,04. Conclusiones: El estudio de los brotes de gripe A/H1N1 2009 permite evidenciar que la adopcion de medidas preventivas y de higiene es de vital importancia para el control de la transmision en centros educativos.

  3. Effect of simvastatin and ezetimibe on suPAR levels and outcomes

    DEFF Research Database (Denmark)

    Hodges, Gethin W; Bang, Casper N; Forman, Julie L

    2018-01-01

    -lowering therapy also lowers suPAR levels is unknown. METHODS: We investigated whether treatment with Simvastatin 40 mg and Ezetimibe 10 mg lowered plasma suPAR levels in 1838 patients with mild-moderate, asymptomatic aortic stenosis, included in the Simvastatin and Ezetimibe in Aortic Stenosis (SEAS) study, using...... and Ezetimibe treatment impeded the progression of the time-related increase in plasma suPAR levels. Year-1 suPAR was associated with all-cause mortality, MCE, and AVE irrespective of baseline levels (SEAS study: NCT00092677)....... cardiovascular events (MCE) composed of ischemic cardiovascular events (ICE) and aortic valve related events (AVE). RESULTS: After 4.3 years of follow-up, suPAR levels had increased by 9.2% (95% confidence interval [CI]: 7.0%-11.5%) in the placebo group, but only by 4.1% (1.9%-6.2%) in the group with lipid...

  4. Manual de RDFa 1.1: Marcado enriquecido de datos estructurados para documentos web

    Directory of Open Access Journals (Sweden)

    Juan Antonio Pastor Sánchez

    2013-03-01

    Full Text Available Los últimos dos años han sido testigos de una evolución interesante: mientras que en un principio la Web se construyó principalmente para el consumo humano, su contenido es cada vez más utilizado por las máquinas que esperan una cierta cantidad de datos estructurados. Los sitios web han empezado a identificar el título de la página, tipo de contenido y la imagen de previsualización con el objeto de proporcionar la información adecuada para ofrecerla como fuente de noticias al usuario cuando este hace clic en el botón "Me gusta". Los motores de búsqueda han comenzado a ofrecer resultados más ricos mediante la obtención de información estructurada muy detallada de las páginas web que rastrean. A su vez, los editores web están produciendo cantidades cada vez mayores de datos estructurados dentro de su contenido web para mejorar el posicionamiento de los sitios que gestionan en los buscadores. Una tecnología clave tras estos desarrollos es la capacidad de agregar directamente datos estructurados en páginas HTML. RDFa (Resource Description Framework in Attributes, RDF en atributos es una técnica que permite precisamente esto: proporciona un conjunto de atributos de marcado para enriquecer la información visual en la web con datos legibles por máquinas. En este Manual, se muestra la forma de expresar datos utilizando RDFa dentro del lenguaje HTML, y en particular el modo para marcar contenidos web ya existentes para su lectura por parte de personas con el objeto de expresar anotaciones RDFa (hints legibles por máquinas. Este documento proporciona únicamente una introducción a RDFa 1.1.

  5. Static properties of baryons in the SU(3) Skyrme model

    International Nuclear Information System (INIS)

    Sriram, M.S.; Mani, H.S.; Ramachandran, R.

    1984-01-01

    We study the SU(3) x SU(3) Skyrme model with explicit chiral- and flavor-symmetry-breaking terms. We evaluate the SU(3)-symmetric meson-baryon coupling-constant ratio α, SU(3) mass breaking in the octet and decuplet, and the ΔI = 1 part of the electromagnetic mass splitting in baryons. The theoretical numbers are in reasonable agreement with the experimental values

  6. Topics in 2 + 1 and 3 + 1 dimensional physics

    International Nuclear Information System (INIS)

    Camperi, M.F.

    1994-01-01

    This thesis is concerned with the study of two different topics pertaining to two different dimensionalities in Field Theory. First, the issues Chern-Simons Gauge Field Theory in 2 + 1 dimensions, mainly as a field theoretic description of knots and links in three euclidean dimensions is addressed. The author provides both a non-perturbative and a perturbative approach, relating them in the large-N limit. A non-perturbative duality was found between the SU(N) k Chern-Simons theory and the SU(k) N one, providing a possible physical consequences of these constructions, notably the case of Fractional Statistics. Second, this thesis addresses the study of the so-called open-quotes vector modelclose quotes, written in the language of Chiral Perturbation Theory in the physical (3 + 1)-dimensional space time. This model was introduced as a possible way to study the physics of vector and pseudoscalar mesons and is based on the assumption that there is a limit of QCD where the vector mesons become massless. The author relates this model to the Hidden Symmetry Scheme, a model sharing the motivation with the previous one, but based on different assumptions. Considering only well established physical results as vector meson dominance, The thesis concludes that the vector model does not appear to be a good candidate for the effective description of vector mesons

  7. Analysis list: Su(z)12 [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Su(z)12 Embryo,Larvae + dm3 http://dbarchive.biosciencedbc.jp/kyushu-u/dm3/target/S...u(z)12.1.tsv http://dbarchive.biosciencedbc.jp/kyushu-u/dm3/target/Su(z)12.5.tsv http://dbarchive.bioscience...dbc.jp/kyushu-u/dm3/target/Su(z)12.10.tsv http://dbarchive.biosciencedbc.jp/kyushu-u/dm3/colo/Su(z)12.Embryo....tsv,http://dbarchive.biosciencedbc.jp/kyushu-u/dm3/colo/Su(z)12.Larvae.tsv http://dbarchive.bioscience...dbc.jp/kyushu-u/dm3/colo/Embryo.gml,http://dbarchive.biosciencedbc.jp/kyushu-u/dm3/colo/Larvae.gml ...

  8. Cultural Years [SCRIPT 1 of 7]. "Music, the Arts and Society at the time of the Great Exhibition of 1851"\\ud [RADIO SERIES

    OpenAIRE

    Little, Jonathan D.

    1990-01-01

    Part of a seven-part radio series broadcast on Sundays at 10:30pm fortnightly from 1st April, 1990. Researched, written, presented and produced by Jonathan David Little for 3MBS-FM Fine Music Melbourne.\\ud \\ud CULTURAL YEARS - Series / Programme Description:\\ud \\ud “Cultural Years” was a seven-part radio series which discussed “Music, the Arts and Society around the time of seven of the great 19th- and 20th-century International Exhibitions” (see below). In examining the ideas which lay behin...

  9. Soluble urokinase plasminogen activator receptor levels are elevated and associated with complications in patients with type 1 diabetes

    DEFF Research Database (Denmark)

    Theilade, S; Lyngbaek, S; Hansen, T W

    2015-01-01

    OBJECTIVES: Soluble urokinase plasminogen activator receptor (suPAR) is a marker of inflammation and endothelial dysfunction. We investigated the associations between suPAR and diabetes, including diabetes duration and complications, in patients with type 1 diabetes. DESIGN, SETTING AND SUBJECTS......: From 2009 to 2011, 667 patients with type 1 diabetes and 51 nondiabetic control subjects were included in a cross-sectional study at Steno Diabetes Center, Gentofte, Denmark. suPAR levels were measured with an enzyme-linked immunosorbent assay. MAIN OUTCOME MEASURES: The investigated diabetic......% confidence interval) values per 1 ln unit increase in suPAR were as follows: 2.5 (1.1-5.7) for CVD: 2.7 (1.2-6.2) for autonomic dysfunction; 3.8 (1.3-10.9) for albuminuria and 2.5 (1.1-6.1) for a high degree of arterial stiffness (P ≤ 0.039). CONCLUSION: The suPAR level is higher in patients with type 1...

  10. Study of Λ parameters and crossover phenomena in SU(N) x SU(N) sigma models in two dimensions

    International Nuclear Information System (INIS)

    Shigemitsu, J.; Kogut, J.B.

    1981-01-01

    The spin system analogues of recent studies of the string tension and Λ parameters of SU(N) gauge theories in 4 dimensions are carried out for the SU(N) x SU(N) and O(N) models in 2 dimensions. The relations between the Λ parameters of both the Euclidean and Hamiltonian formulation of the lattice models and the Λ parameter of the continuum models are obtained. The one loop finite renormalization of the speed of light in the lattice Hamiltonian formulations of the O(N) and SU(N) x SU(N) models is calculated. Strong coupling calculations of the mass gaps of these spin models are done for all N and the constants of proportionality between the gap and the Λ parameter of the continuum models are obtained. These results are contrasted with similar calculations for the SU(N) gauge models in 3+1 dimensions. Identifying suitable coupling constants for discussing the N → infinity limits, the numerical results suggest that the crossover from weak to strong coupling in the lattice O(N) models becomes less abrupt as N increases while the crossover for the SU(N) x SU(N) models becomes more abrupt. The crossover in SU(N) gauge theories also becomes more abrupt with increasing N, however, at an even greater rate than in the SU(N) x SU(N) spin models

  11. Avoiding domain wall problem in SU(N) grand unified theories

    International Nuclear Information System (INIS)

    Fujimoto, Y.; Zhiyong, Z.

    1982-08-01

    We look for the possibility of embedding the discrete sub-group of U(1)-Pecci-Quinn symmetry into the continuous one to avoid the domain wall problem. We find, within some restricted context, among various SU(N) models only one-family SU(5) and SU(6). (author)

  12. Non linear realizations of SU(2) x U(1) in the MSSM model independent analysis and g - 2 of W bosons

    CERN Document Server

    Ferrara, Sergio; Porrati, Massimo; Ferrara, Sergio; Masiero, Antonio; Porrati, Massimo

    1993-01-01

    We perform a model-independent analysis of the spontaneously broken phase of an $SU(2)\\times U(1)$ supersymmetric gauge theory, by using a non-linear parametrization of the Goldstone sector of the theory. The non-linear variables correspond to an $SL(2,C)$ superfield matrix in terms of which a non-linear Lagrangian can be constructed, and the pattern of supersymmetry breaking investigated. The supersymmetric order parameter is the V.E.V. of the neutral pseudo-Goldstone boson. Some applications of this technique are considered, in relation to the minimal supersymmetric standard model, and to determine the $g-2$ of the $W$-bosons in the limit of large top mass.

  13. Anticuerpos antitiroperoxidasa y antitransglutaminasa en familiares de primer grado de personas con diabetes tipo 1 y su relación con algunas características clínicas, bioquímicas e inmunológicas Antithyroperoxidase and antitransglutaminase antibodies in first degree relatives of type 1 diabetes persons and its relation to some clinical, biochemical and immunological features

    OpenAIRE

    Levi González Rivero; Eduardo Cabrera Rode; Silvia Elena Turcios Tristá; José Armando Galván Cabrera; Julio César Rodríguez González; Tania Espinosa Reyes; Pedro González Fernández; Manuel Vera González; Celeste Arranz Calzado; Oscar Díaz Horta

    2010-01-01

    INTRODUCCIÓN: los anticuerpos antitiroperoxidasa (AcTPO) y antitransglutaminasa (ATGt) son útiles marcadores de enfermedad tiroidea autoinmune y enfermedad celíaca, respectivamente. Su presencia en familiares de primer grado de personas con diabetes tipo 1 no se ha descrito en Cuba. OBJETIVO: determinar las frecuencias de los AcTPO y ATGt en familiares de primer grado de personas con diabetes tipo 1 y su relación con algunas características clínicas, bioquímicas e inmunológicas. MÉTODOS: en u...

  14. dAdd1 and dXNP prevent genome instability by maintaining HP1a localization at Drosophila telomeres.

    Science.gov (United States)

    Chavez, Joselyn; Murillo-Maldonado, Juan Manuel; Bahena, Vanessa; Cruz, Ana Karina; Castañeda-Sortibrán, América; Rodriguez-Arnaiz, Rosario; Zurita, Mario; Valadez-Graham, Viviana

    2017-12-01

    Telomeres are important contributors to genome stability, as they prevent linear chromosome end degradation and contribute to the avoidance of telomeric fusions. An important component of the telomeres is the heterochromatin protein 1a (HP1a). Mutations in Su(var)205, the gene encoding HP1a in Drosophila, result in telomeric fusions, retrotransposon regulation loss and larger telomeres, leading to chromosome instability. Previously, it was found that several proteins physically interact with HP1a, including dXNP and dAdd1 (orthologues to the mammalian ATRX gene). In this study, we found that mutations in the genes encoding the dXNP and dAdd1 proteins affect chromosome stability, causing chromosomal aberrations, including telomeric defects, similar to those observed in Su(var)205 mutants. In somatic cells, we observed that dXNP and dAdd1 participate in the silencing of the telomeric HTT array of retrotransposons, preventing anomalous retrotransposon transcription and integration. Furthermore, the lack of dAdd1 results in the loss of HP1a from the telomeric regions without affecting other chromosomal HP1a binding sites; mutations in dxnp also affected HP1a localization but not at all telomeres, suggesting a specialized role for dAdd1 and dXNP proteins in locating HP1a at the tips of the chromosomes. These results place dAdd1 as an essential regulator of HP1a localization and function in the telomere heterochromatic domain.

  15. HLA DRB1*, DQB1*, DPA1* y DPB1* y su asociación con la patogénesis de las leucemias en población venezolana

    Directory of Open Access Journals (Sweden)

    Sergio E. Rivera-Pirela

    2016-08-01

    Full Text Available Background: The HLA complex is involved in the pathogenesis of leukemia. Objectives: The presence of class II HLA alleles DRB1 *, DQB1 *, DPA1 *, and DPB1 * was evaluated in 47 patients with acute lymphoblastic leukemia (ALL and 48 with chronic myeloid leukemia (CML for comparison with 48 healthy volunteers in Zulia, Venezuela, and to evaluate potential associations of HLA with leukemia. Methods: Low- and high-resolution PCR-SSP was used for class II HLA regions DRB1 *, DQB1 *, DPA1 *, and DPB1 * following the instructions of KIT Olerup SSP Genovision. Results: Alleles HLA-DRB1*14, especially DRB1*14:21, -DPA1*1:06, -DPA1*01:03,-DPA1*02:01, and the haplotypes HLA-DPA1*01:03-DPB1*04:01, DPA1*01:03-DPB1*02:01, DPA1*01:03-DPB1*99:01, -DRB1*14-DPA1*01:03, -DRB1*15-DPA1*01:03 were associated with CML (RR > 3; alleles HLA-DRB1*13, -DQB1*02, -DPA1*01:05, -DPA1*01:09 and the haplotypes HLA-DPA1*01:09-DPB1*02:01, DPA1*01:09-DPB1*04:01 were protective (RR < 1. Alleles HLA-DQB1*04, -DQB1*05, -DPA1*1:06, -DPA1*01:07, -DPA1*1:08 had a positive association with ALL. Alleles HLA-DPA1*01:09, -DPA1*02:01, -DPB1*02:01, -DPB1*03:01 and the haplotypes HLA-DPA1*01:03-DPB1*04:02, -DPA1*01:09-DPB1*02:01, -DPA1*01:09-DPB1*04:01, -DPA1*02:01-DPB1*04:02 were negatively associated. Conclusions: The absence of associations with HLA-DRB1 * region in ALL and other association patterns identified suggest marked differences in the pathogenesis of leukemia, which suggests possible deficiencies in antigen presentation for ALL or potential effects of molecular mimicry in CML.

  16. Unitary gauge calculation of K0/sub L/ → μ+μ- in the Weinberg SU(2)'/sub L/ x U(1) gauge theory

    International Nuclear Information System (INIS)

    Olenick, R.P.

    1979-01-01

    The rare weak decay K 0 /sub L/ → μ + μ - is calculated in the unitary gauge of the Weinberg SU(2)/sub L/ x U(1) model of weak and electromagnetic interactions. A historical development of gauge theories is presented first; this indicates the need for extension of the hadron symmetry group to SU(4). The GIM mechanism, which extends this group by introducing the charmed quark, is incorporated into Weinberg theory. Explicit calculations of the fourth-order Feynman diagrams representing W + W - , Z 0 , γ, and Higgs scalar intermediate states are performed. Through the technique of dimensional regularization the divergent amplitudes are evaluated, and the calculation is shown to be renormalizable by counterterms generated from the original Lagrangian. The Higgs scalar contribution to the effective Lagrangian is found to be greatly suppressed compared to the W + W - and Z 0 contributions, which are used to estimate the charmed quark mass. Analysis reveals that a charmed quark mass less than or equal to 5 GeV will suppress the decay rate to the experimentally observed value. Concluding remarks are made

  17. Rare B-meson decays in SU(2)LxSU(2)RxU(1) model

    International Nuclear Information System (INIS)

    Asatryan, H.M.; Ioannissian, A.N.

    1989-01-01

    Rare B-meson decays are investigated in the left-right synmmetric models. The scalar particle contribution to the amplitude of the b → s γ decay is calculated. It is shown that this contribution can be essential even for the scalar particles masses of about several TeV. The effects due to the left-right symmetry and scalar particles can be detected by measuring the photon polarization in the decay B → K * γ. 9 refs.; 1 fig.; 1 tab

  18. Optimization for extracellular biosynthesis of silver nanoparticles by Penicillium aculeatum Su1 and their antimicrobial activity and cytotoxic effect compared with silver ions.

    Science.gov (United States)

    Ma, Liang; Su, Wei; Liu, Jian-Xin; Zeng, Xiao-Xi; Huang, Zhi; Li, Wen; Liu, Zheng-Chun; Tang, Jian-Xin

    2017-08-01

    The present study addresses an eco-friendly and energy-saving method for extracellular biosynthesis of silver nanoparticles (AgNPs) using a cell free filtrate of the fungus strain Penicillium aculeatum Su1 as a reducing agent. Parametric optimization of the biosynthesis process demonstrated different effects on the size, distribution, yield, and synthesis rate of biosynthesized AgNPs. The transmission electron microscopy (TEM) measurements demonstrated that AgNPs were spherical or approximately spherical, with a size between 4 and 55nm. High-resolution transmission electron microscopy (HR-TEM) and X-ray diffraction (XRD) analyses indicated that AgNPs were nanocrystalline by nature, with the character of a face-centered cubic (fcc). Fourier transform infrared spectroscopy (FTIR) analysis confirmed the existence of protein molecules that acted as a reducing agent and a capping agent during the biosynthesis process. Furthermore, the biosynthesized AgNPs exhibited higher antimicrobial activity than silver ions against Gram negative bacteria, Gram positive bacteria and fungi. Compared with silver ions, the biosynthesized AgNPs presented higher biocompatibility toward human bronchial epithelial (HBE) cells and high cytotoxicity in a dose-dependent manner with an IC 50 of 48.73μg/mL toward A549 cells. These results demonstrate that Penicillium aculeatum Su1 is a potential bioresource that can be used to produce low-cost and eco-friendly AgNPs as efficient antimicrobial agent, drug delivery vehicle or anticancer drug for clinic treatment. Copyright © 2017 Elsevier B.V. All rights reserved.

  19. SU2 nonstandard bases: the case of mutually unbiased bases

    International Nuclear Information System (INIS)

    Olivier, Albouy; Kibler, Maurice R.

    2007-02-01

    This paper deals with bases in a finite-dimensional Hilbert space. Such a space can be realized as a subspace of the representation space of SU 2 corresponding to an irreducible representation of SU 2 . The representation theory of SU 2 is reconsidered via the use of two truncated deformed oscillators. This leads to replace the familiar scheme [j 2 , j z ] by a scheme [j 2 , v ra ], where the two-parameter operator v ra is defined in the universal enveloping algebra of the Lie algebra su 2 . The eigenvectors of the commuting set of operators [j 2 , v ra ] are adapted to a tower of chains SO 3 includes C 2j+1 (2j belongs to N * ), where C 2j+1 is the cyclic group of order 2j + 1. In the case where 2j + 1 is prime, the corresponding eigenvectors generate a complete set of mutually unbiased bases. Some useful relations on generalized quadratic Gauss sums are exposed in three appendices. (authors)

  20. Symmetry breaking patterns of the 3-3-1 model at finite temperature

    Energy Technology Data Exchange (ETDEWEB)

    Borges, J.S. [Universidade do Estado do Rio de Janeiro, Departamento de Fisica de Altas Energias, Rio de Janeiro, RJ (Brazil); Ramos, Rudnei O. [Universidade do Estado do Rio de Janeiro, Departamento de Fisica Teorica, Rio de Janeiro, RJ (Brazil)

    2016-06-15

    We consider the minimal version of an extension of the standard electroweak model based on the SU(3){sub c} x SU(3){sub L} x U(1){sub X} gauge symmetry (the 3-3-1 model). We analyze the most general potential constructed from three scalars in the triplet representation of SU(3){sub L}, whose neutral components develop nonzero vacuum expectation values, giving mass for all the model's massive particles. For different choices of parameters, we obtain the particle spectrum for the two symmetry breaking scales: one where the SU(3){sub L} x U(1){sub X} group is broken down to SU(2){sub L} x U(1){sub Y} and a lower scale similar to the standard model one. Within the considerations used, we show that the model encodes two first-order phase transitions, respecting the pattern of symmetry restoration. The last transition, corresponding to the standard electroweak one, is found to be very weak first-order, most likely turning second-order or a crossover in practice. However, the first transition in this model can be strongly first-order, which might happen at a temperature not too high above the second one. We determine the respective critical temperatures for symmetry restoration for the model. (orig.)

  1. Low energy properties of the SU(m|n) supersymmetric Haldane-Shastry spin chain

    International Nuclear Information System (INIS)

    Basu-Mallick, B.; Bondyopadhaya, Nilanjan; Sen, Diptiman

    2008-01-01

    The ground state and low energy excitations of the SU(m|n) supersymmetric Haldane-Shastry spin chain are analyzed. In the thermodynamic limit, it is found that the ground state degeneracy is finite only for the SU(m|0) and SU(m|1) spin chains, while the dispersion relation for the low energy and low momentum excitations is linear for all values of m and n. We show that the low energy excitations of the SU(m|1) spin chain are described by a conformal field theory of m non-interacting Dirac fermions which have only positive energies; the central charge of this theory is m/2. Finally, for n≥1, the partition functions of the SU(m|n) Haldane-Shastry spin chain and the SU(m|n) Polychronakos spin chain are shown to be related in a simple way in the thermodynamic limit at low temperatures

  2. Genetic algorithm for lattice gauge theory on SU(2) and U(1) on 4 dimensional lattice, how to hitchhike to thermal equilibrium state

    International Nuclear Information System (INIS)

    Yamaguchi, A.; Sugamoto, A.

    2000-01-01

    Applying Genetic Algorithm for the Lattice Gauge Theory is formed to be an effective method to minimize the action of gauge field on a lattice. In 4 dimensions, the critical point and the Wilson loop behaviour of SU(2) lattice gauge theory as well as the phase transition of U(1) theory have been studied. The proper coding methodi has been developed in order to avoid the increase of necessary memory and the overload of calculation for Genetic Algorithm. How hichhikers toward equilibrium appear against kidnappers is clarified

  3. Tetanus Cases After Voluntary Medical Male Circumcision for HIV Prevention - Eastern and Southern Africa, 2012-2015

    Science.gov (United States)

    2016-01-22

    2012–2015 Jonathan M. Grund, MA, MPH1; Carlos Toledo, PhD1; Stephanie M. Davis, MD1; Renee Ridzon, MD2; Edna Moturi, MBChB3; Heather Scobie , PhD3...Jonathan M.; Toledo, Carlos; Davis, Stephanie M.; Ridzon, Renee; Moturi, Edna; Scobie , Heather; Naouri, Boubker; Reed, Jason B.; Njeuhmeli, Emmanuel; Thomas

  4. Molecular characterization of Als1, an acetohydroxyacid synthase mutation conferring resistance to sulfonylurea herbicides in soybean.

    Science.gov (United States)

    Ghio, Cecilia; Ramos, María Laura; Altieri, Emiliano; Bulos, Mariano; Sala, Carlos A

    2013-12-01

    The AHAS gene family in soybean was characterized. The locus Als1 for sulfonylurea resistance was mapped and the resistant allele was characterized at the molecular level. Sulfonylurea (SU) resistance in soybean is controlled by Als1, a semi-dominant allele obtained by EMS mutagenesis over the cultivar Williams 82. The overall objective of this research was to map Als1 in the soybean genome and to determine the nucleotidic changes conferring resistance to SU. Four nucleotide sequences (GmAhas1-4) showing high homology with the Arabidopsis thaliana acetohydroxyacid synthase (AHAS, EC 4.1.3.18) gene sequence were identified by in silico analysis, PCR-amplified from the SU-resistant line BTK323STS and sequenced. Expression analysis showed that GmAhas1, located on chromosome 4 by in silico analysis, is the most expressed sequence in true leaves. F2:3 families derived from the cross between susceptible and resistant lines were evaluated for SU resistance. Mapping results indicate that the locus als1 is located on chromosome 4. Sequence comparison of GmAhas1 between BTK323STS and Williams 82 showed a single nucleotide change from cytosine to thymine at position 532. This transversion generates an amino acid change from proline to serine at position 197 (A. thaliana nomenclature) of the AHAS catalytic subunit. An allele-specific marker developed for the GmAhas1 mutant sequence cosegregated with SU resistance in the F2 population. Taking together, the mapping, expression and sequencing results indicate that the GmAhas1 sequence corresponds to the Als1 gene sequence controlling SU resistance in soybean. The molecular breeding tools described herein create the basis to speed up the identification of new mutations in soybean AHAS leading to enhanced levels of resistance to SU or to other families of AHAS inhibitor herbicides.

  5. Generalized N=1 orientifold compactifications and the Hitchin functionals

    International Nuclear Information System (INIS)

    Benmachiche, Iman; Grimm, Thomas W.

    2006-01-01

    The four-dimensional N=1 supergravity theories arising in compactifications of type IIA and type IIB on generalized orientifold backgrounds with background fluxes are discussed. The Kahler potentials are derived for reductions on SU(3) structure orientifolds and shown to consist of the logarithm of the two Hitchin functionals. These are functions of even and odd forms parameterizing the geometry of the internal manifold, the B-field and the dilaton. The superpotentials induced by background fluxes and the non-Calabi-Yau geometry are determined by a reduction of the type IIA and type IIB fermionic actions on SU(3) and generalized SU(3)xSU(3) manifolds. Mirror spaces of Calabi-Yau orientifolds with electric and part of the magnetic NS-NS fluxes are conjectured to be certain SU(3)xSU(3) structure manifolds. Evidence for this identification is provided by comparing the generalized type IIA and type IIB superpotentials

  6. Unifying flipped SU(5) in five dimensions

    International Nuclear Information System (INIS)

    Barr, S.M.; Dorsner, Ilja

    2002-01-01

    It is shown that embedding a four-dimensional flipped SU(5) model in a five-dimensional SO(10) model preserves the best features of both flipped SU(5) and SO(10). The missing partner mechanism, which naturally achieves both doublet-triplet splitting and suppression of d=5 proton decay operators, is realized as in flipped SU(5), while the gauge couplings are unified as in SO(10). The masses of down quarks and charged leptons, which are independent in flipped SU(5), are related by the SO(10). Distinctive patterns of quark and lepton masses can result. The gaugino mass M 1 is independent of M 3 and M 2 , which are predicted to be equal

  7. SEVILLA Y EL SEVILLA 1 (1972-2015 / Seville and the Seville 1(1972-2015

    Directory of Open Access Journals (Sweden)

    Valentín Trillo Martínez

    2015-05-01

    Full Text Available RESUMEN En 2012 el edificio de oficinas Sevilla 1 cumplía cuarenta años desde su inauguración. Obra de Fernando Villanueva, Manuel Trillo y Luis Fernando Gómez-Estern, arquitectos de la firma OTAISA, fue pionero en la ciudad en cuanto a su funcionalidad exclusiva, concepto de espacio de trabajo diáfano y técnica constructiva utilizada, basada en el empleo riguroso de un módulo de fachada en hormigón prefabricado con el que se controló la totalidad de la envolvente del inmueble. Después de este tiempo, en un entorno urbano muy evolucionado y consolidado, el edificio sigue teniendo un aspecto saludable. Su estudio y análisis subrayaran la importancia del edificio en el crecimiento de la ciudad y en el prolífico periodo de la oficina de arquitectura OTAISA que ocupó su onceava planta durante nueves años. Dirigida por Felipe Medina, oficina de arquitectura extensa y plural, importó la manera americana de entender la profesión como empresa, persiguiendo el equilibrio de la calidad, la capacidad y del rendimiento. Sus relaciones con una incipiente Escuela de Arquitectura sevillana, en una aún pequeña ciudad poco profesionalizada, resultaron inevitables.

  8. F-theory GUTs with U(1) symmetries: Generalities and survey

    International Nuclear Information System (INIS)

    Dolan, Matthew J.; Marsano, Joseph; Saulina, Natalia; Schaefer-Nameki, Sakura

    2011-01-01

    We study the structure of SU(5) F-theory grand unified theory (GUT) models that engineer additional U(1) symmetries. These are highly constrained by a set of relations observed by Dudas and Palti (DP) that originate from the physics of four-dimensional anomaly cancellation. Using the DP relations, we describe a general tension between unification and the suppression of dimension 5 proton decay when one or more U(1)'s are Peccei-Quinn (PQ) symmetries and hypercharge flux is used to break the SU(5) GUT group. We then specialize to spectral cover models, whose global completions in F theory we know how to construct. In that setting, we provide a technical derivation of the DP relations, construct spectral covers that yield all possible solutions to them, and provide a complete survey of spectral cover models for SU(5) GUTs that exhibit two U(1) symmetries.

  9. SU(7) GUT and evasion of the survival hypothesis

    International Nuclear Information System (INIS)

    Umemura, I.; Yamamoto, K.

    1981-01-01

    Characteristic features of an SU(7) GUT are discussed, in which the fundamental representation 7 consists of SU(5)'5 and its two singlets with charge q = +-1/2. The so-called survival hypothesis for fermions is naturally evaded by a kind of electric charge conservation due to q = +-1/2, and a brief comment on the suppression of the νsub(e) mass is given also. (orig.)

  10. Light hadrons from N{sub f}=2+1+1 dynamical twisted mass fermions

    Energy Technology Data Exchange (ETDEWEB)

    Baron, R. [CEA, Centre de Saclay, Gif-sur-Yvette (France). IRFU/Service de Physique Nucleaire; Blossier, B.; Boucaud, P. [Paris 11 Univ., Orsay (FR). Lab. de Physique Theorique] (and others)

    2011-01-15

    We present results of lattice QCD simulations with mass-degenerate up and down and mass-split strange and charm (N{sub f}=2+1+1) dynamical quarks using Wilson twisted mass fermions at maximal twist. The tuning of the strange and charm quark masses is performed at three values of the lattice spacing a{approx}0.06 fm, a{approx}0.08 fm and a{approx}0.09 fm with lattice sizes ranging from L{approx}1.9 fm to L{approx}3.9 fm. We perform a preliminary study of SU(2) chiral perturbation theory by combining our lattice data from these three values of the lattice spacing. (orig.)

  11. O vírus Influenza H1N1 e os trabalhadores da suinocultura: uma revisão

    Directory of Open Access Journals (Sweden)

    Neidimila Aparecida Silveira Oliveira

    Full Text Available Considerando-se o grande impacto midiático e populacional da recente epidemia pelo vírus Influenza H1N1, em função do seu risco potencial de alta letalidade, decidimos realizar esta revisão, de forma a melhor compreender as relações entre a exposição aos suínos e a possível contaminação laboral. A influenza, também conhecida como gripe, é uma doença viral adquirida através do contato humano com animais domesticados. Os suínos são importantes hospedeiros do vírus Influenza H1N1 (swine-like Influenza A e susceptíveis às infecções por vírus Influenza de origem aviária e humana. Os suínos possuem importante papel na transmissão viral entre espécies e na epidemiologia da influenza humana. A epidemia por Influenza A H1N1/2009 representou um grande desafio para as autoridades públicas e setores privados da saúde, no que se refere às medidas de planejamento e execução de ações de prevenção e tratamento. Estima-se que 89 milhões de pessoas tenham sido contaminadas por este vírus, com até 403 mil casos de hospitalização e 18.300 óbitos até abril de 2010. Embora estejamos em período pós-pandemia, acredita-se que o vírus H1N1 tenha atualmente um comportamento semelhante ao vírus de gripe sazonal, causando focos infecciosos localizados e com níveis ainda significativos de transmissão. Destaca-se a preocupação com a saúde dos trabalhadores diretamente ligados à suinocultura, já que essa atividade produtiva apresenta uma situação de risco aos trabalhadores envolvidos e também à comunidade.

  12. Dicty_cDB: Contig-U08145-1 [Dicty_cDB

    Lifescience Database Archive (English)

    Full Text Available . 50 1e-04 AF021822_1( AF021822 |pid:none) Scaptodrosophila lebanonensis supe... ...emonia viridis copper/zinc super... 49 6e-04 AF021824_1( AF021824 |pid:none) Hirtodrosophila pictiventris su

  13. Differential equations for correlators on the torus: Two-point correlation function of isospin-1 primary fields in the k=3 SU(2) WZW theory

    International Nuclear Information System (INIS)

    Durganandini, P.

    1990-01-01

    We systematize the procedure developed by Mathur, Mukhi and Sen to derive differential equations for correlators in rational conformal field theories on the torus in those cases when it is necessary to study not only leading-order behaviour but also the nonleading behaviour of the solutions in the asymptotic limit Imτ→∞, Imz→∞. As an illustration, we derive the differential equation for the two-point correlator of the isospin-1 primary fields in the k=3 SU(2) WZW model on the torus. (orig.)

  14. Sign of the neutron-proton mass difference in an SU(2)xU(1) supersymmetric toy model: A possible scenario for solving the old puzzle

    International Nuclear Information System (INIS)

    Desai, B.R.; Xu, G.

    1990-01-01

    Based on the idea that electromagnetism is responsible for mass differences within isotopic multiplets (e.g., pointlike neutron and proton or u and d quarks), we generalize an SU(2)xU(1) model in a toy field theory of vectors to a supersymmetric model and investigate the finite mass difference within the isotopic doublet. It is found that under soft-supersymmetry breaking, a positive n-p mass difference can be obtained under reasonable assumptions for the parameters involved

  15. Curiosities at c=1

    International Nuclear Information System (INIS)

    Ginsparg, P.

    1988-01-01

    We consider conformal field theories on a torus with central charge c=1, and in particular models based upon modding out string propagation on the SU(2) group manifold by its finite subgroups. We find that the partition functions for these models coincide with the continuum limit partition functions of a recently introduced class of RSOS models, defined in terms of the extended Dynkin diagrams of simply-laced Lie algebras, thus giving an alternative interpretation for the primary fields in these latter theories. Three of the models have no massless moduli and thus do not lie on the same line of critical points with the rest. The particular correspondence between simply-laced Lie algebras and finite subgroups of SU(2) that emerges coincides with that which has already appeared in other mathematical contexts. (orig.)

  16. Generalized N=1 orientifold compactifications and the Hitchin functionals

    International Nuclear Information System (INIS)

    Benmachiche, I.; Hamburg Univ.; Grimm, T.W.

    2006-02-01

    The four-dimensional N=1 supergravity theories arising in compactifications of type IIA and type IIB on generalized orientifold backgrounds with background fluxes are discussed. The Kaehler potentials are derived for reductions on SU(3) structure orientifolds and shown to consist of the logarithm of the two Hitchin functionals. These are functions of even and odd forms parameterizing the geometry of the internal manifold, the B-field and the dilaton. The superpotentials induced by background fluxes and the non-Calabi-Yau geometry are determined by a reduction of the type IIA and type IIB fermionic actions on SU(3) and generalized SU(3) x SU(3) manifolds. Mirror spaces of Calabi-Yau orientifolds with electric and part of the magnetic NS-NS fluxes are conjectured to be certain SU(3) x SU(3) structure manifolds. Evidence for this identification is provided by comparing the generalized type IIA and type IIB superpotentials. (orig.)

  17. Symmetry breaking in a five-dimensional SU(5) model

    International Nuclear Information System (INIS)

    Svetovoi, V.B.; Khariton, N.G.

    1986-01-01

    Two-state symmetry breaking in a SU(5) model in a space with M 4 x S 1 topology is discussed. The scalar 24-plet is a component of a five-vector and acquires a nonzero vacuum expectation value at the quantum level. The vacuum differs substantially from that of the standard SU(5) model. Its orientation in the SU(5) space and absolute magnitude are fixed uniquely. The second stage of the symmetry breaking occurs on account of a five-scalar in the fundamental representation of SU(5) by means of the Weinberg mechanism. The small mass of the scalar SU(2) doublet is not explained

  18. Analytic study of SU(3) lattice gauge theory

    International Nuclear Information System (INIS)

    Zheng Xite; Xu Yong

    1989-01-01

    The variational-cumulant expansion method has been extended to the case of lattice SU(3) Wilson model. The plaquette energy as an order paramenter has been calculated to the 2nd order expansion. No 1st order phase transition in the D = 4 case is found which is in agreement with the monte Carlo results, and the 1st order phase transition in the d = 5 case is clearly seen. The method can be used in the study of problems in LGT with SU(3) gauge group

  19. SU{sub 2} nonstandard bases: the case of mutually unbiased bases

    Energy Technology Data Exchange (ETDEWEB)

    Olivier, Albouy; Kibler, Maurice R. [Universite de Lyon, Institut de Physique Nucleaire de Lyon, Universite Lyon, CNRS/IN2P3, 43 bd du 11 novembre 1918, F-69622 Villeurbanne Cedex (France)

    2007-02-15

    This paper deals with bases in a finite-dimensional Hilbert space. Such a space can be realized as a subspace of the representation space of SU{sub 2} corresponding to an irreducible representation of SU{sub 2}. The representation theory of SU{sub 2} is reconsidered via the use of two truncated deformed oscillators. This leads to replace the familiar scheme [j{sub 2}, j{sub z}] by a scheme [j{sup 2}, v{sub ra}], where the two-parameter operator v{sub ra} is defined in the universal enveloping algebra of the Lie algebra su{sub 2}. The eigenvectors of the commuting set of operators [j{sup 2}, v{sub ra}] are adapted to a tower of chains SO{sub 3} includes C{sub 2j+1} (2j belongs to N{sup *}), where C{sub 2j+1} is the cyclic group of order 2j + 1. In the case where 2j + 1 is prime, the corresponding eigenvectors generate a complete set of mutually unbiased bases. Some useful relations on generalized quadratic Gauss sums are exposed in three appendices. (authors)

  20. O(5) x U(1) electroweak theory

    International Nuclear Information System (INIS)

    Mukku, C.; Sayed, W.A.

    1980-12-01

    An anomaly free O(5) x U(1) theory of electroweak interactions is described which provides a unified description of electroweak phenomena for two families of standard leptons and quarks. No ''new'' non-sequential type fermions of the standard model are introduced as has been the case for all past studies based on this group. The present scheme requires the introduction of two further charged and three more neutral gauge fields over and above the Wsup(+-), Z and photon fields of SU(2) x U(1) giving rise to new neutral and charged currents. In this note we outline our reasons for proposing the present electroweak scheme, give the basic structure of the model, discuss the symmetry breaking pattern which ensures that SU(2)sub(L) x U(1) is the low energy symmetry, point out the new interactions present in the extended framework and obtain limits on the masses of all the gauge fields. (author)

  1. Theory of weak interactions and related topics. Progress report, January 1-December 31, 1980

    International Nuclear Information System (INIS)

    Marshak, R.E.

    1985-08-01

    The work reported included an effort to understand the physical meaning of the U(1) hypercharge group in the accepted electroweak SU/sub L/(2) x U(1) group, as well as other facets of the electroweak structure (e.g., the persistence of the V-A charged current despite the finite masses of the quarks and leptons, the meaning of quark-lepton symmetry for all three generations). It was shown that, unlike the case of the SU(2)/sub L/ x U(1) model, the vector U(1) generator in the SU(2)/sub L/ x SU(2)/sub R/ x U(1) model can be identified with (B-L) symmetry. Consequences were explored of the idea that the breakdown of parity is related to the non-conservation of global B-L. One consequence is that two Majorana neutrinos, one light and one extremely heavy, are predicted for each generation. Also examined were the questions of the magnitudes of various B-violating amplitudes and the kinds of selection rules governing these processes. 18 refs

  2. Conformally parametrized surfaces associated with CPN-1 sigma models

    International Nuclear Information System (INIS)

    Grundland, A M; Hereman, W A; Yurdusen, I-dot

    2008-01-01

    Two-dimensional parametrized surfaces immersed in the su(N) algebra are investigated. The focus is on surfaces parametrized by solutions of the equations for the CP N-1 sigma model. The Lie-point symmetries of the CP N-1 model are computed for arbitrary N. The Weierstrass formula for immersion is determined and an explicit formula for a moving frame on a surface is constructed. This allows us to determine the structural equations and geometrical properties of surfaces in R N 2 -1 . The fundamental forms, Gaussian and mean curvatures, Willmore functional and topological charge of surfaces are given explicitly in terms of any holomorphic solution of the CP 2 model. The approach is illustrated through several examples, including surfaces immersed in low-dimensional su(N) algebras

  3. Intoxicação experimental de suínos por fumonisinas

    Directory of Open Access Journals (Sweden)

    Dilkin Paulo

    2004-01-01

    Full Text Available Os efeitos da exposição oral prolongada (28 dias à fumonisina foram estudados em suínos jovens. Os animais foram divididos em três grupos experimentais e alimentados com ração ad libitum contendo: A 0mg de FB1.kg-1 (controle; B 10mg de FB1.kg-1; C 30mg de FB1.kg-1. Os suínos foram observados duas vezes por dia; seus pesos e consumo alimentar foram registrados semanalmente. Entre o 20º e 24º dia de intoxicação, os suínos do tratamentos C apresentaram diminuição do consumo de ração e ganho de peso, sinais característicos de edema pulmonar, razão pela qual um animal foi levado a óbito aos 23 dias de intoxicação. Após 28 dias, os animais foram necropsiados e os órgãos submetidos a análises macroscópica, histopatológica e ao estudo da morfologia e histologia intestinal. Nos suínos que apresentaram sinais clínicos de intoxicação, observaram-se lesões pulmonares, hepáticas e diminuição de altura das vilosidades e profundidade das criptas e hiperplasia glandular em segmentos intestinais. Conclui-se, portanto, que substanciais perdas de produtividade podem ser induzidas em suínos alimentados com ração contaminada com baixos níveis de fumonisinas.

  4. Andrographolide inhibits hypoxia-inducible factor-1 through phosphatidylinositol 3-kinase/AKT pathway and suppresses breast cancer growth

    Directory of Open Access Journals (Sweden)

    Li J

    2015-02-01

    Full Text Available Jie Li,1 Chao Zhang,1 Hongchuan Jiang,1 Jiao Cheng21Department of General Surgery, 2Department of Gynaecology and Obstetrics, Beijing Chao-Yang Hospital, Beijing, People’s Republic of ChinaAbstract: Hypoxia-inducible factor-1 (HIF-1 is a master regulator of the transcriptional response to hypoxia. HIF-1α is one of the most compelling anticancer targets. Andrographolide (Andro was newly identified to inhibit HIF-1 in T47D cells (a half maximal effective concentration [EC50] of 1.03×10-7 mol/L, by a dual-luciferase reporter assay. It suppressed HIF-1α protein and gene accumulation, which was dependent on the inhibition of upstream phosphatidylinositol 3-kinase (PI3K/AKT pathway. It also abrogated the expression of HIF-1 target vascular endothelial growth factor (VEGF gene and protein. Further, Andro inhibited T47D and MDA-MB-231 cell proliferation and colony formation. In addition, it exhibited significant in vivo efficacy and antitumor potential against the MDA-MB-231 xenograft in nude mice. In conclusion, these results highlighted the potential effects of Andro, which inhibits HIF-1, and hence may be developed as an antitumor agent for breast cancer therapy in future.Keywords: Andrographolide (Andro, HIF-1α, inhibit, breast cancer, hypoxia, PI3k/AKT/mTOR pathway

  5. Tyrosine kinase inhibitor SU6668 represses chondrosarcoma growth via antiangiogenesis in vivo

    International Nuclear Information System (INIS)

    Klenke, Frank M; Abdollahi, Amir; Bertl, Elisabeth; Gebhard, Martha-Maria; Ewerbeck, Volker; Huber, Peter E; Sckell, Axel

    2007-01-01

    As chondrosarcomas are resistant to chemotherapy and ionizing radiation, therapeutic options are limited. Radical surgery often cannot be performed. Therefore, additional therapies such as antiangiogenesis represent a promising strategy for overcoming limitations in chondrosarcoma therapy. There is strong experimental evidence that SU6668, an inhibitor of the angiogenic tyrosine kinases Flk-1/KDR, PDGFRbeta and FGFR1 can induce growth inhibition of various primary tumors. However, the effectiveness of SU6668 on malignant primary bone tumors such as chondrosarcomas has been rarely investigated. Therefore, the aim of this study was to investigate the effects of SU6668 on chondrosarcoma growth, angiogenesis and microcirculation in vivo. In 10 male severe combined immunodeficient (SCID) mice, pieces of SW1353 chondrosarcomas were implanted into a cranial window preparation where the calvaria serves as the site for the orthotopic implantation of bone tumors. From day 7 after tumor implantation, five animals were treated with SU6668 (250 mg/kg body weight, s.c.) at intervals of 48 hours (SU6668), and five animals with the equivalent amount of the CMC-based vehicle (Control). Angiogenesis, microcirculation, and growth of SW 1353 tumors were analyzed by means of intravital microscopy. SU6668 induced a growth arrest of chondrosarcomas within 7 days after the initiation of the treatment. Compared to Controls, SU6668 decreased functional vessel density and tumor size, respectively, by 37% and 53% on day 28 after tumor implantation. The time course of the experiments demonstrated that the impact on angiogenesis preceded the anti-tumor effect. Histological and immunohistochemical results confirmed the intravital microscopy findings. SU6668 is a potent inhibitor of chondrosarcoma tumor growth in vivo. This effect appears to be induced by the antiangiogenic effects of SU6668, which are mediated by the inhibition of the key angiogenic receptor tyrosine kinases Flk-1/KDR, PDGFRbeta

  6. Nonperturbative flipped SU(5) vacua in heterotic M-theory

    Energy Technology Data Exchange (ETDEWEB)

    Faraggi, Alon E. E-mail: faraggi@thphys.ox.ac.uk; Garavuso, Richard E-mail: garavuso@thphys.ox.ac.uk; Isidro, Jose M. E-mail: isidro@thphys.ox.ac.uk

    2002-10-07

    The evidence for neutrino masses in atmospheric and solar neutrino experiments provides further support for the embedding of the Standard Model fermions in the chiral 16 SO(10) representation. Such an embedding is afforded by the realistic free fermionic heterotic-string models. In this paper we advance the study of these string models toward a nonperturbative analysis by generalizing the work of Donagi, Pantev, Ovrut and Waldram from the case of G=SU(2n+1) to G=SU(2n) stable holomorphic vector bundles on elliptically fibered Calabi-Yau manifolds with fundamental group Z{sub 2}. We demonstrate existence of G=SU(4) solutions with three generations and SO(10) observable gauge group over Hirzebruch base surface, whereas we show that certain classes of del Pezzo base surface do not admit such solutions. The SO(10) symmetry is broken to SU(5)xU(1) by a Wilson line. The overlap with the realistic free fermionic heterotic-string models is discussed.

  7. Tetrahedral cluster and pseudo molecule: New approaches to Calculate Absolute Surface Energy of Zinc Blende (111)/(-1-1-1) Surface

    Science.gov (United States)

    Zhang, Yiou; Zhang, Jingzhao; Tse, Kinfai; Wong, Lun; Chan, Chunkai; Deng, Bei; Zhu, Junyi

    Determining accurate absolute surface energies for polar surfaces of semiconductors has been a great challenge in decades. Here, we propose pseudo-hydrogen passivation to calculate them, using density functional theory approaches. By calculating the energy contribution from pseudo-hydrogen using either a pseudo molecule method or a tetrahedral cluster method, we obtained (111)/(-1-1-1) surfaces energies of Si, GaP, GaAs, and ZnS with high self-consistency. Our findings may greatly enhance the basic understandings of different surfaces and lead to novel strategies in the crystal growth. We would like to thank Su-huai Wei for helpful discussions. Computing resources were provided by the High Performance Cluster Computing Centre, Hong Kong Baptist University. This work was supported by the start-up funding and direct Grant with the Project.

  8. La larva de Hyla uruguaya Schmidt, 1944 (Anura: Hylidae, con comentarios sobre su biología y su status taxonómico

    Directory of Open Access Journals (Sweden)

    Kolenc, Francisco

    2003-11-01

    Full Text Available Hyla uruguaya es una especie poco conocida y con relaciones taxonómicas discutidas. Su hallazgo en Uruguay ha sido esporádico. En el presente trabajo se describen su morfología larval, aspectos sobre su biología reproductiva, geonemia y ecología en Uruguay. La larva tiene cuerpo de tipo robusto y elíptico, con ojos laterales, aletas altas con dorsal expandida, espiráculo izquierdo, tubo proctodeal dextrógiro y corto, y fórmula de queratodontes [(1(1-1/(1-1(2], con una fila simple de papilas orales con claro rostral y varias papilas intramarginales subangulares. Una puesta obtenida en el laboratorio consistió de 398 huevos de 1,3 mm de diámetro. El canto de anuncio consta de una sucesión de notas multipulsadas de 22 ms de duración, con una frecuencia dominante promedio de 4146 Hz, emitidas a una frecuencia de 4,2 - 4,8 notas/s. El tren de notas puede durar hasta 13 minutos. Su canto fue registrado en la naturaleza desde fines de agosto y sus larvas se encontraron hasta fines de febrero en charcos de áreas abiertas en paisajes serranos del NE, E y SE del Uruguay. Los resultados obtenidos permitirían reconsiderar el estado de conservación de la especie en Uruguay. Sugerimos su afinidad taxonómica con las especies de Scinax del clado ruber sobre la base de caracteres larvales y discutimos su relación con la especie críptica Hyla pinima. Hyla uruguaya is a poorly known species with controversial taxonomic status. Its finding in Uruguay has been sporadic. In the present work larval morphology, some aspects of reproductive biology, geographical distribution and ecology in Uruguay are addressed. The tadpole has a robust and elliptic body, lateral eyes, high fins, left spiracle, vent tube short and dextral, labial tooth row formula of [(1(1-1/(1-1(2], a single row of oral papillae with a dorsal gap and some submarginal subangular papillae. A spawn of 398 eggs of 1,3 mm diameter was obtained in the laboratory. The advertisement call

  9. CRP and suPAR are differently related to anthropometry and subclinical organ damage

    DEFF Research Database (Denmark)

    Lyngbæk, Stig; Sehestedt, Thomas; Marott, Jacob L

    2013-01-01

    BACKGROUND: Low-grade inflammation is a marker for cardiovascular disease (CVD). The inflammatory biomarkers C-reactive protein (CRP) and soluble urokinase plasminogen activator receptor (suPAR) independently predict CVD. We tested the hypothesis that these biomarkers reflect different aspects...... of the inflammation associated with CVD. METHODS: We studied 2273 subjects without CVD. Log-transformed CRP and suPAR were included in general linear and logistic regression models to compare associations with measures of anthropometry and subclinical organ damage (SOD). Owing to interactions on body mass index (BMI......) (P3: 1.31 (1.16-1.47), whereas log-CRP was not (1.00 (0.89-1.11))). CONCLUSIONS: CRP is positively associated with anthropometric measures, whereas suPAR is linked to endothelial dysfunction and atherosclerosis....

  10. Casos autodeclarados de síndrome gripal en trabajadores sanitarios españoles durante la pandemia de gripe A (H1N1 2009 Self-reported cases of influenza among Spanish healthcare workers during the 2009 influenza A(H1N1 pandemic

    Directory of Open Access Journals (Sweden)

    Julián Olalla

    2013-04-01

    Full Text Available Objetivos: Describir la prevalencia de síndrome gripal en el invierno de 2009 y los factores asociados a su ocurrencia. Método: Estudio transversal en 18 hospitales españoles. Los voluntarios respondieron un cuestionario de salud, informando sobre si habían sufrido síndrome gripal y su estado vacunal. Resultados: Participaron 1289 trabajadores sanitarios, y de ellos, 72 (5,6% refirieron gripe en su familia, 195 (15,1% se vacunaron frente al virus A/California/7/2009/H1N1 y 75 (5,8%, intervalo de confianza del 95% [IC95%]: 4,5-7,1 sufrieron síndrome gripal. Hubo diferencias entre comunidades autónomas. En el análisis de regresión logística, se asoció a síndrome gripal trabajar en la Comunidad de Madrid (odds ratio [OR]=8,31, IC95%: 1.05-65.39, tener casos de gripe en la familia (OR=2,84, IC95%: 1,41-5,73 y no estar vacunado frente a la gripe A (OR=2,68, IC95%: 1,05-6,82. Conclusiones: La presencia de casos en la familia y la comunidad donde se trabaja determinaron una diferente prevalencia de síndrome gripal. La vacuna se asoció a una menor prevalencia de la enfermedad.Objectives: To describe the prevalence of influenza-like syndrome in winter 2009 and the factors associated with its occurrence. Methods: A cross-sectional study was carried out in 18 hospitals in Spain. Volunteers completed a health questionnaire in which they reported the occurrence of influenza-like syndrome and vaccination and demographic status. Results: A total of 1,289 healthcare workers participated. Of these, 72 (5.6% reported influenza in their family, 195 (15.1% had been vaccinated against the A/California/7/2009/H1N1 virus and 75 (5.8%, 95%CI: 4.5-7.1% had been diagnosed with influenza like-syndrome. There were differences among regions. In logistic regression analysis, the following factors were associated with a higher prevalence of influenza-like syndrome: working in Madrid (OR=8.31, 95%CI: 1.05-65.39, the occurrence of cases of influenza in the family

  11. 1/N

    International Nuclear Information System (INIS)

    Coleman, S.

    1980-03-01

    There exist families of field theories with symmetry group SO(N) (or SU(N)) that become simpler as N becomes larger. More precisely, the solutions to these theories possess an expansion in powers of 1/N. This expansion is the subject of these lectures. The 1/N expansion can be used to analyze model field theories. The 1/N expansion is developed for phi 4 theory and applied to two two-dimensional models with similar combinatoric structures, the Gross-Neveu model and the CP/sup N-1/ model. These models display (in the leading 1/N approximation) such interesting phenomena as asymptotic freedom, dynamical symmetry breaking, dimensional transmutation, and non-perturbative confinement. It is possible that the 1/N expansion, with N the number of colors, might fruitfully be applied to quantum chromodynamics. Unfortunately, it is not possible to make a decisive test of the approximation, because no one knows how to compute even the first term in the expansion in closed form. However, it is possible to argue that this first term, whatever its detailed form, has many properties that are also shared by the real world, and which are otherwise underived from field theory. These include the saturation of scattering amplitudes by an infinite number of narrow resonances, the essential feature of dual-resonance models

  12. Expresión y purificación del antígeno preS1/2 y su utilidad en el estudio de la patogenia de la infección por el virus de la hepatitis B

    Directory of Open Access Journals (Sweden)

    Masyelly D. Rojas P

    2013-05-01

    Full Text Available El preS1/2 es parte de las proteínas de envoltura del virus de la hepatitis B (VHB, con funciones importantes en la inmunopatogenia de la enfermedad. Para su estudio es necesario contar con la proteína pura y así dilucidar su participación en el daño generado en el tejido hepático. Para ello se procedió a la expresión del preS1/2 previamente clonado en el vector peT3d, en la cepa de E coli HMS174 (DE3, seguido por su purificación mediante columnas de afinidad hacia residuos de histidina (6xhistidina y finalmente sometidas a liberación de contaminantes mediante el uso de columnas de afinidad hacia endotoxina y filtración por centrifugación, de esta manera utilizarla para evaluar su efecto sobre hepatocitos humanos. El procedimiento utilizado permitió obtener 1,5 mg de proteína pura funcionalmente estable por cada litro de medio de cultivo. En este trabajo se describe un método sencillo de expresión y purificación del preS1/2 recombinante y se evidencia la obtención de un producto intacto, con potencial uso en estudios funcionales y futuros ensayos terapéuticos Expression and purification of preS1/2 antigen and its usefulness in the hepatitis B virus pathogenesis study Abstract The preS1/2 belongs to the envelope proteins of the hepatitis B virus (HBV, and has an important role in the pathogenesis of the disease. A pure protein is important for their study, and thus elucidates their involvement in the liver tissue damage observed during the diseases. For this purpose preS1/2 previously cloned into the pET3d was expressed in E. coli strain HMS174 (DE3, subsequent was purified by affinity columns histidine residues (6xhistidine and finally treated to release contaminants by using affinity columns endotoxin and filtration by centrifugation, thereby used it to assess their effect on human hepatocytes. The procedure yielded 1,5 mg pure protein per liter of culture medium, functionally stable. In this paper we describe a simple method

  13. SU(6) symmetry and the quark forces

    International Nuclear Information System (INIS)

    Bartnik, E.A.; Namyslowski, J.M.

    1984-01-01

    The short distance forces between 3 valence quarks in the proton are investigated in perturbative QCD formulated on the light cone. These forces are the driving terms in the Brodsky-Lepage type evolution equation for the partially decomposed distribution amplitudes. The one-gluon exchange force, which is the lowest order force in the running coupling constant αsub(s) retains the SU(6) symmetry, while the αsub(s) 2 -order force, corresponding to one Coulomb gluon and one transverse gluon, breaks the SU(6) symmetry. The latter force contributes to the deviation from 1/2 of the d/u ratio for the proton, observed experimentally. In the kinematical domain of one fast quark, the αsub(s) 2 -order force gives the leading (1-x) 3 behaviour of the deep inelastic structure function F 2 (x), in contrast to the αsub(s)-order force, which gives (1-x) 5 , for xapprox.=1. (orig.)

  14. The phase transition in the SU(5) model at high temperatures

    International Nuclear Information System (INIS)

    Daniel, M.; Vayonakis, C.E.

    1981-01-01

    Within the minimum GUT model we have studied the nature of the fluctuation-induced transition between the SU(5) and the SU(3)sub(c) x SU(2) x U(1) phase which occurs at high temperatures. Our analysis is limited to the case when the phase transition occurs outside the critical (fluctuation-dominated) region. For this to happen the SU(5) model has to be in a mode analogous to the type I superconductor. This corresponds to having the scalar quartic couplings in the Higgs sector less than the squared gauge coupling. For generic values of the coupling constants the phase transition is found to be weakly first order. As we approach the boundaries for the region of the SU(3)sub(c) x SU(2) x U(1) phase, however, a strong first-order transition occurs. The SU(5) mode (analogous to the type II superconductor) when the phase transition occurs inside the fluctuation-dominated region has been recently studied by Ginsparg. His results together with ours show that there is a continuous merging of the type I mode into the type II mode. Finally our analysis elucidates some aspects of the monopole problem in grand unified theories. (orig.)

  15. SU/sub 3/ and color properties of the psi constituents

    Energy Technology Data Exchange (ETDEWEB)

    Wolfenstein, L [Carnegie-Mellon Univ., Pittsburgh, Pa. (USA)

    1976-06-19

    It is suggested that the psi constituents form a (3,1) representation of SU/sub 3/xSU/sub 3/c rather than (1,3) as in the charm scheme. Within the framework of confined color this allows the psi constituents to be produced above some threshold and decay weakly, as suggested in recent models. Some general consequences of this classification are discussed and a specific scheme which may help to resolve some problems in psi spectroscopy is presented.

  16. SuPAR predicts postoperative complications and mortality in patients with asymptomatic aortic stenosis

    DEFF Research Database (Denmark)

    Hodges, Gethin W; Bang, Casper N; Eugen-Olsen, Jesper

    2018-01-01

    complications with a HR of 2.7 (95% CI 1.5 to 5.1, P=0.002), per doubling in suPAR. After adjusting for the European System for Cardiac Operative Risk Evaluation or Society of Thoracic Surgeons risk score, suPAR remained associated with postoperative mortality with a HR 3.2 (95% CI 1.2 to 8.6, P=0.025) and 2...

  17. D-term contributions and CEDM constraints in E6 × SU(2)F × U(1)A SUSY GUT model

    Science.gov (United States)

    Shigekami, Yoshihiro

    2017-11-01

    We focus on E6 × SU(2)F × U(1)A supersymmetric (SUSY) grand unified theory (GUT) model. In this model, realistic Yukawa hierarchies and mixings are realized by introducing all allowed interactions with 𝓞(1) coefficients. Moreover, we can take stop mass is smaller than the other sfermion masses. This type of spectrum called by natural SUSY type sfermion mass spectrum can suppress the SUSY contributions to flavor changing neutral current (FCNC) and stabilize weak scale at the same time. However, light stop predicts large up quark CEDM and stop contributions are not decoupled. Since there is Kobayashi-Maskawa phase, stop contributions to the up quark CEDM is severely constrained even if all SUSY breaking parameters and Higgsino mass parameter μ are real. In this model, real up Yukawa couplings are realized at the GUT scale because of spontaneous CP violation. Therefore CEDM bounds are satisfied, although up Yukawa couplings are complex at the SUSY scale through the renormalization equation group effects. We calculated the CEDMs and found that EDM constraints can be satisfied even if stop mass is 𝓞(1) TeV. In addition, we investigate the size of D-terms in this model. Since these D-term contributions is flavor dependent, the degeneracy of sfermion mass spectrum is destroyed and the size of D-term is strongly constrained by FCNCs when SUSY breaking scale is the weak scale. However, SUSY breaking scale is larger than 1 TeV in order to obtain 125 GeV Higgs mass, and therefore sizable D-term contribution is allowed. Furthermore, we obtained the non-trivial prediction for the difference of squared sfermion mass.

  18. Down-regulation of Notch-1 by γ-secretase inhibitor suppress the ...

    African Journals Online (AJOL)

    ajl yemi

    2011-11-30

    Nov 30, 2011 ... Notch-1 signaling is crucial for stem cell maintenance and in a variety of tissues. Previous ... family of transcription factors (CBF-1/RBP-Jk, Su (h) and. LAG-1) .... prostate stem cell renew and cell differentiation (Chhipa,. 2011).

  19. N =1 Lagrangians for generalized Argyres-Douglas theories

    Science.gov (United States)

    Agarwal, Prarit; Sciarappa, Antonio; Song, Jaewon

    2017-10-01

    We find N = 1 Lagrangian gauge theories that flow to generalized ArgyresDouglas theories with N = 2 supersymmetry. We find that certain SU quiver gauge theories flow to generalized Argyres-Douglas theories of type ( A k-1 , A mk-1) and ( I m,km , S). We also find quiver gauge theories of SO/Sp gauge groups flowing to the ( A 2 m-1 , D 2 mk+1), ( A 2 m , D 2 m( k-1)+ k ) and D m(2 k + 2) m(2 k + 2) [ m] theories.

  20. Expresión y purificación del preS1/2 del virus de la hepatitis B (VHB y su utilidad en el diagnóstico de la infección

    Directory of Open Access Journals (Sweden)

    Yismelvy Marquez

    2013-12-01

    Full Text Available La hepatitis B es una enfermedad inflamatoria del tejido hepático causada por la infección crónica del virus de la hepatitis B (VHB. Su diagnostico se basa en la detección de anticuerpos y antígenos contra dos de sus principales proteínas inmunogenicas, el antígeno de superficie (HBsAg y el del core (HBcAg. Existen otros dos componentes de la envoltura altamente inmunogenicos el preS1/2, sin embargo su papel en la evaluación de la respuesta serológica aún no ha sido evaluado. Es por ello que en este trabajo se propone expresar y purificar el preS1/2 usando a la Escherichia coli como sistema de expresión por ser el menos costoso a fin de obtener una proteína con propiedades antigénicas adecuadas para su utilización en el diagnostico serológico y evaluación de la respuesta inmune. El preS1/2 previamente clonado en el vector pET3d-preS1/2 se utilizó para transformar a la cepa de Escherichia coli (HMS174 y después de inducir la síntesis proteica mediante el uso de IPTG, se purifico mediante columna de afinidad al níquel, posteriormente analizadas en gel de electroforesis poliacrilamida, para seleccionar las fracciones de preS1/2. Después de dializarlas y liofilizarlas se logró obtener 5,4 mg/ml de la proteína pura, confirmado mediante la realización del western blott con un anticuerpo monoclonal específico. Estos resultados indican que este método es fácil, poco costoso y rápido para obtener una proteína pura con potencial uso en el diagnostico serológico de la infección por VHB.

  1. SU(8) family unification with boson-fermion balance

    CERN Multimedia

    CERN. Geneva

    2014-01-01

    Grand unification has been intensively investigated for over forty years, and many different approaches have been tried. In this talk I propose a model that involves three ingredients that do not appear in the usual constructions: (1) boson--fermion balance without full supersymmetry, (2) canceling the spin 1/2 fermion gauge anomalies against the anomaly from a gauged spin 3/2 gravitino, and (3) using a scalar field representation with non-zero U(1) generator to break the SU(8) gauge symmetry through a ground state which, before dynamical symmetry breaking, has a periodic U(1) generator structure. The model has a number of promising features: (1) natural incorporation of three families, (2) incorporation of the experimentally viable flipped SU(5) model, (3) a symmetry breaking pathway to the standard model using the scalar field required by boson-fermion balance, together with a stage of most attractive channel dynamical symmetry breaking, without postulating additional Higgs fields, (4) vanishing of bare Yuk...

  2. High Fidelity Modeling of Field-Reversed Configuration (FRC) Thrusters (Briefing Charts)

    Science.gov (United States)

    2017-05-24

    THRUSTERS (Briefing Charts) Robert Martin , Eder Sousa, Jonathan Tran Air Force Research Laboratory (AFMC) AFRL/RQRS 1 Ara Drive Edwards AFB, CA 93524... Martin N/A HIGH FIDELITY MODELING OF FIELD-REVERSED CONFIGURATION (FRC) THRUSTERS Robert Martin1, Eder Sousa2, Jonathan Tran2 1AIR FORCE RESEARCH...Distribution is unlimited. PA Clearance No. 17314 MARTIN , SOUSA, TRAN (AFRL/RQRS) DISTRIBUTION A - APPROVED FOR PUBLIC RELEASE; DISTRIBUTION UNLIMITED. PA

  3. Lopinavir/ritonavir in the treatment of HIV-1 infection: a review

    Directory of Open Access Journals (Sweden)

    Ashish Chandwani

    2008-09-01

    Full Text Available Ashish Chandwani1, Jonathan Shuter21Division of Infectious Diseases, Montefiore Medical Center and the Albert Einstein College of Medicine, Bronx, NY, USA; 2AIDS Center and Division of Infectious Diseases, Montefiore Medical Center and the Albert Einstein College of Medicine, Bronx, NY, USAAbstract: Lopinavir/ritonavir is the first and only coformulated HIV-1 protease inhibitor (PI. Large clinical trials have demonstrated lopinavir/ritonavir’s clinical efficacy in both antiretroviral-naïve and -experienced patients. The immunologic and virologic benefits of treatment with this agent have been proven in HIV-infected adults, adolescents, and children. Smaller studies support the use of lopinavir/ritonavir monotherapy as a therapeutic option in certain patients. The drug is characterized by a high genetic barrier to resistance, and appears to be more forgiving of non-adherence than earlier, unboosted PIs. The most frequent side effects observed are diarrhea, nausea, and vomiting. These gastrointestinal adverse effects are generally mild to moderate. Metabolic derangements, including hyperlipidemia and glucose intolerance, have also been observed in lopinavir/ritonavir recipients. As the menu of available antiretroviral agents continues to expand, lopinavir/ritonavir remains a proven and effective drug for the treatment of HIV infection.Keywords: lopinavir/ritonavir, protease inhibitor, HIV, antiretroviral, Kaletra®

  4. Desempeño de la prueba de inmunofluorescencia directa en el diagnóstico del virus Influenza A(H1N1) Direct immunofluorescence assay performance in diagnosis of the Influenza A(H1N1) virus

    OpenAIRE

    Luis Pianciola; Gladys González; Melina Mazzeo; Mariano Navello; Natalia Quidel; María Fernanda Bulgheroni

    2010-01-01

    El 25 de abril de 2009, a menos de un mes de la detección en México del primer humano con virus Influenza A(H1N1), la enfermedad ya se había propagado a más de 40 países superando los 10 000 casos notificados. Dada su naturaleza impredecible, este tipo de virus requiere métodos diagnósticos apropiados, confiables y seguros, pero que también estén al alcance de los laboratorios clínicos. Mediante el estudio de 291 muestras de pacientes con sospecha de infección por virus Influenza A(H1N1) en N...

  5. Precision electroweak tests of the minimal and flipped SU(5) supergravity models

    Energy Technology Data Exchange (ETDEWEB)

    Lopez, J.L.; Nanopoulos, D.V.; Park, G.T.; Pois, H.; Yuan, K. (Center for Theoretical Physics, Department of Physics, Texas A M University, College Station, Texas 77843-4242 (United States) Astroparticle Physics Group, Houston Advanced Research Center (HARC), The Woodlands, Texas 77381 (United States))

    1993-10-01

    We explore the one-loop electroweak radiative corrections in the minimal SU(5) and the no-scale flipped SU(5) supergravity models via explicit calculation of vacuum polarization contributions to the [epsilon][sub 1,2,3] parameters. Experimentally, [epsilon][sub 1,2,3] are obtained from a global fit to the CERN LEP observables, and [ital M][sub [ital W

  6. Giant magnons in the D1-D5 system

    International Nuclear Information System (INIS)

    David, Justin R.; Sahoo, Bindusar

    2008-01-01

    We study giant magnons in the the D1-D5 system from both the boundary CFT and as classical solutions of the string sigma model in AdS 3 x S 3 x T 4 . Re-examining earlier studies of the symmetric product conformal field theory we argue that giant magnons in the symmetric product are BPS states in a centrally extended SU(1|1) x SU(1|1) superalgebra with two more additional central charges. The magnons carry these additional central charges locally but globally they vanish. Using a spin chain description of these magnons and the extended superalgebra we show that these magnons obey a dispersion relation which is periodic in momentum. We then identify these states on the string theory side and show that here too they are BPS in the same centrally extended algebra and obey the same dispersion relation which is periodic in momentum. This dispersion relation arises as the BPS condition for the extended algebra and is similar to that of magnons in N = 4 Yang-Mills

  7. Flipped SU(5) from Z{sub 12-I} orbifold with Wilson line

    Energy Technology Data Exchange (ETDEWEB)

    Kim, Jihn E. [Department of Physics and Astronomy, and Center for Theoretical Physics, Seoul National University, Seoul 151-747 (Korea, Republic of)]. E-mail: jekim@phyp.snu.ac.kr; Kyae, Bumseok [School of Physics, Korea Institute for Advanced Study, 207-43 Cheongryangri-dong, Dongdaemun-gu, Seoul 130-722 (Korea, Republic of)]. E-mail: bkyae@kias.re.kr

    2007-05-14

    We construct a three family flipped SU(5) model from the heterotic string theory compactified on the Z{sub 12-I} orbifold with one Wilson line. The gauge group is SU(5)xU(1){sub X}xU(1){sup 3}x[SU(2)xSO(10)xU(1){sup 2}]{sup '}. This model does not derive any non-Abelian group except SU(5) from E{sub 8}, which is possible only for two cases in case of one shift V, one in Z{sub 12-I} and the other in Z{sub 12-II}. We present all possible Yukawa couplings. We place the third quark family in the twisted sectors and two light quark families in the untwisted sector. From the Yukawa couplings, the model provides the R-parity, the doublet-triplet splitting, and one pair of Higgs doublets. It is also shown that quark and lepton mixings are possible. So far we have not encountered a serious phenomenological problem. There exist vector-like flavor SU(5) exotics (including Q{sub em}=+/-16 color exotics and Q{sub em}=+/-12 electromagnetic exotics) and SU(5) vector-like singlet exotics with Q{sub em}=+/-12 which can be removed near the GUT scale. In this model, sin{sup 2}{theta}{sub W}{sup 0}=38 at the full unification scale.

  8. An anti-ferromagnetic terephthalate-bridged trigonal prismatic ...

    Indian Academy of Sciences (India)

    M. Scheme 1. Possible coordination modes of terephthalate. (tp). 2. ..... W and Atwood J L 2009 In Supramolecular Chemistry .... (a) Jiang Z Q, Zhao Z, Jiang G Y, Hou D C, Kang Y ... (a) Li H, Eddaoudi M, O'Keeffe M and Yaghi O M 1999.

  9. Evidence for SU(3) symmetry breaking from hyperon production

    International Nuclear Information System (INIS)

    Yang Jianjun

    2002-01-01

    We examine the SU(3) symmetry breaking in hyperon semileptonic decays (HSD) by considering two typical sets of quark contributions to the spin content of the octet baryons: set 1 with SU(3) flavor symmetry and set 2 with SU(3) flavor symmetry breaking in the HSD. The quark distributions of the octet baryons are calculated with a successful statistical model. Using an approximate relation between the quark fragmentation functions and the quark distributions, we predict the polarizations of the octet baryons produced in e + e - annihilation and semi-inclusive deep lepton-nucleon scattering in order to reveal the SU(3) symmetry breaking effect on the spin structure of the octet baryons. We find that the SU(3) symmetry breaking significantly affects the hyperon polarization. The available experimental data on the Λ polarization seem to favor the theoretical predictions with SU(3) symmetry breaking. We conclude that there is a possibility to get collateral evidence for SU(3) symmetry breaking from hyperon production. The theoretical errors for our predictions are discussed

  10. Investigation of the bond strength between the photo-sensitive polymer SU-8 and Au

    DEFF Research Database (Denmark)

    Nordstrom, Maria; Johansson, Alicia; Sanches-Noguerón, E.

    2004-01-01

    promotors between the SU-8 and Au (ii) the effect of the processing sequence, either keeping SU-8 as bottum layer or Au (iii) varying the UV exposure dosage of the SU-8. For comparison, also the bond strength between SU-8 and other materials was measured. We report on bond strength of 4.8 +/- 1.2 MPa...

  11. Generalna karta Bosne i Hercegovine razmjere 1:150 000 : General map of Bosnia and Herzegovina at scale 1:150 000

    Directory of Open Access Journals (Sweden)

    Nedim Tuno

    2015-12-01

    Full Text Available Generalna karta Bosne i Hercegovine razmjere 1:150 000 u izdanju Vojnogeografskog instituta u Beču predstavlja jednu od najznačajnijih karata izrađenih na osnovu prvog sistematskog geodetskog premjera BiH. Temeljem analize izvornih kartografskih dokumenata i ostalih dostupnih podataka, u radu su izneseni najbitniji detalji koji karakterišu ovu kartu. Poslije kratkog historijskog osvrta na okolnosti koje su dovele do njenog nastanka, detaljno su analizirani elementi karte. Data je i kratka uporedba primijenjenih rješenja na spomenutoj karti s onima na ranijoj karti razmjere 1:300 000. Na osnovi provedenih istraživanja zaključuje se da je generalna karta BiH prva prava moderna topografska karta te zemlje, koja predstavlja izuzetno vrijednu kartografsku baštinu. : General map of Bosnia and Herzegovina at scale 1:150 000 published by the Military Geographical Institute of Vienna. is one of the most important maps made on the basis of the first systematic geodetic survey of B&H. Based on the analysis of the original cartographic documents and other available data, the paper presents the most important details that characterize this map. The elements of the map are analyzed in details after a brief historical review of the circumstances that led to the creation of the map. A brief comparison of solutions adopted on this map, with those of the previous 1: 300 000 scale map, is also given in the paper. Based on the conducted research it was concluded that the General map of Bosnia and Herzegovina is the first true modern topographic map of the country. This map is a cartographic heritage of exceptional value.

  12. BChPT x 1/Nc: masses and currents

    Energy Technology Data Exchange (ETDEWEB)

    Goity, Jose L. [Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States); Hampton Univ., Hampton, VA (United States); Fernando, Ishara P. [Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States); Hampton Univ., Hampton, VA (United States)

    2018-04-01

    A summary of the implementation of the combined BChPT X 1/Nc expansion for three flavors is presented, along with its applications to the octet and decuplet baryon masses, SU(3) charges and axial couplings.

  13. On symmetry hierarchy and radiative corrections in the grand unified model SU(8)sub(L)xSU(8)sub(R)

    International Nuclear Information System (INIS)

    Pirogov, Yu.F.

    1982-01-01

    In the model of precocious chiral unification SU(8)sub(L)xSU(8)sub(R) radiative corrections are calculated for the effective parameters sin 2 thetaw(μ) and α(μ) and the unification mass M 8 is determifed in presence of a hierarchy of intermediate symmetries. The one-loop approximation is used and contributions from the Higgs fields are neglected. It is shown that a natural hierarchy exists leading to a decrease of sinsup(2)thetasub(w)(Msub(wsub(L))) up to sinsup(2)thetasub(w)=1/5-1/4 together with a decrease of M 8 up to M 8 =10 6 -10 7 GeV, as compared with the magnitudes without the hierarchy [ru

  14. The baryon vector current in the combined chiral and 1/Nc expansions

    Energy Technology Data Exchange (ETDEWEB)

    Flores-Mendieta, Ruben; Goity, Jose L [JLAB

    2014-12-01

    The baryon vector current is computed at one-loop order in large-Nc baryon chiral perturbation theory, where Nc is the number of colors. Loop graphs with octet and decuplet intermediate states are systematically incorporated into the analysis and the effects of the decuplet-octet mass difference and SU(3) flavor symmetry breaking are accounted for. There are large-Nc cancellations between different one-loop graphs as a consequence of the large-Nc spin-flavor symmetry of QCD baryons. The results are compared against the available experimental data through several fits in order to extract information about the unknown parameters. The large-Nc baryon chiral perturbation theory predictions are in very good agreement both with the expectations from the 1/Nc expansion and with the experimental data. The effect of SU(3) flavor symmetry breaking for the |Delta S|=1 vector current form factors f1(0) results in a reduction by a few percent with respect to the corresponding SU(3) symmetric values.

  15. On two-particle N=1 supersymmetric composite grand unified models

    International Nuclear Information System (INIS)

    Pirogov, Yu.F.

    1984-01-01

    A class of two-particle N=1 supersymmetric composite grand unified models, satisfying the anomaly matching and cancellation conditions, n-independence and survival hypothesis is considered. A unique admissible set of the light states, containing spectator states on a par with the composite ones is found. At low mass scales this set contains exactly four families of ordinary fermions without any additional exotics. The interactions of the light states at distances greater than the compositeness radius are described by the N=1 sypersymmetric chiral grand unified model [SU(6)] 2 (or [SU(8)] 2 with a fixed set of four second-rank tensors as matter fields

  16. Symmetry hierarchies and radiative corrections in the grand unified model SU(8)/sub L/ x SU(8)/sub R/

    International Nuclear Information System (INIS)

    Pirogov, Y.F.

    1982-01-01

    In the SU(8)/sub L/ x SU(8)/sub R/ model of precocious chiral unification, radiative corrections for the effective parameters sin 2 theta/sub W/(μ) and α(μ) are calculated in the one-loop approximation, neglecting contributions of the Higgs fields, and the unification mass M 8 is determined in the presence of a hierarchy of intermediate symmetries. It is shown that a natural hierarchy exists which leads to a decrease in sin 2 theta/sub W/(M/sub W/L) down to the value sin 2 theta/sub W/ = (1/5)--(1/4) together with a decrease in M 8 down to M 8 = 10 6 --10 7 GeV in comparison with the values in the absence of a hierarchy

  17. SU(4)

    Indian Academy of Sciences (India)

    Abstract. We introduce in this paper embedded Gaussian unitary ensemble of random matrices, for m fermions in Ω number of single particle orbits, generated by random two- body interactions that are SU(4) scalar, called EGUE(2)-SU(4). Here the SU(4) algebra corresponds to Wigner's supermultiplet SU(4) symmetry in ...

  18. On the SU2 unit tensor

    International Nuclear Information System (INIS)

    Kibler, M.; Grenet, G.

    1979-07-01

    The SU 2 unit tensor operators tsub(k,α) are studied. In the case where the spinor point group G* coincides with U 1 , then tsub(k α) reduces up to a constant to the Wigner-Racah-Schwinger tensor operator tsub(kqα), an operator which produces an angular momentum state. One first investigates those general properties of tsub(kα) which are independent of their realization. The tsub(kα) in terms of two pairs of boson creation and annihilation operators are realized. This leads to look at the Schwinger calculus relative to one angular momentum of two coupled angular momenta. As a by-product, a procedure is given for producing recursion relationships between SU 2 Wigner coefficients. Finally, some of the properties of the Wigner and Racah operators for an arbitrary compact group and the SU 2 coupling coefficients are studied

  19. Quantum critical spin-2 chain with emergent SU(3) symmetry.

    Science.gov (United States)

    Chen, Pochung; Xue, Zhi-Long; McCulloch, I P; Chung, Ming-Chiang; Huang, Chao-Chun; Yip, S-K

    2015-04-10

    We study the quantum critical phase of an SU(2) symmetric spin-2 chain obtained from spin-2 bosons in a one-dimensional lattice. We obtain the scaling of the finite-size energies and entanglement entropy by exact diagonalization and density-matrix renormalization group methods. From the numerical results of the energy spectra, central charge, and scaling dimension we identify the conformal field theory describing the whole critical phase to be the SU(3)_{1} Wess-Zumino-Witten model. We find that, while the Hamiltonian is only SU(2) invariant, in this critical phase there is an emergent SU(3) symmetry in the thermodynamic limit.

  20. Dicty_cDB: Contig-U14689-1 [Dicty_cDB

    Lifescience Database Archive (English)

    Full Text Available e-137 ( P68541 ) RecName: Full=ATP synthase subunit alpha, mitochondrial... 489 e-137 EU281005_1( EU281005 |pid:none) Hydnora...7705 |pid:none) Orontium aquaticum ATPase alpha su... 486 e-136 AF503356_1( AF503356 |pid:none) Hydnora

  1. Your Child's Development: 1.5 Years (18 Months)

    Science.gov (United States)

    ... 5 Years (18 Months) Print en español El desarrollo de su hijo: 1,5 años (18 meses) ... takes off some clothes scribbles with a crayon Social and Emotional Development begins to engage in pretend ...

  2. Low scale composite Higgs model and 1.8 ˜2 TeV diboson excess

    Science.gov (United States)

    Bian, Ligong; Liu, Da; Shu, Jing

    2018-04-01

    We consider a simple solution to explain the recent diboson excess observed by ATLAS and CMS Collaborations in models with custodial symmetry SU(2)L × SU(2)R → SU(2)c. The SU(2)L triplet vector boson ρ with mass range of 1.8 ˜ 2 TeV would be produced through the Drell-Yan process with sizable diboson decay branching to account for the excess. The other SU(2)L × SU(2)R bidoublet axial vector boson a would cancel all deviations of electroweak obervables induced by ρ even if the SM fermions mix with some heavy vector-like (composite) fermions which couple to ρ (“nonuniversally partially composite”), therefore allows arbitrary couplings between each SM fermion and ρ. We present our model in the “General Composite Higgs” framework with SO(5) × U(1)X → SO(4) × U(1)X breaking at scale f and demand the first Weinberg sum rule and positive gauge boson form factors as the theoretical constraints. We find that our model can fit the diboson excess very well if the left-handed SM light quarks, charged leptons and tops have zero, zero/moderately small and moderate/large composite components for reasonable values of gρ and f. The correlation between tree level S parameter and the h → Zγ suggest a large a contribution to h → Zγ and it is indeed a 𝒪(1) effect in our parameter space which provides a strong hint for our scenario if this diboson excess is confirmed by the 13 ˜ 14 TeV LHC Run II.

  3. A supersymmetric flipped SU(5) intersecting brane world

    Energy Technology Data Exchange (ETDEWEB)

    Chen, C.-M. [George P. and Cynthia W. Mitchell Institute for Fundamental Physics, Texas A and M University, College Station, TX 77843 (United States)]. E-mail: cchen@physics.tamu.edu; Kraniotis, G.V. [George P. and Cynthia W. Mitchell Institute for Fundamental Physics, Texas A and M University, College Station, TX 77843 (United States)]. E-mail: kraniotis@physics.tamu.edu; Mayes, V.E. [George P. and Cynthia W. Mitchell Institute for Fundamental Physics, Texas A and M University, College Station, TX 77843 (United States)]. E-mail: eric@physics.tamu.edu (and others)

    2005-03-31

    We construct an N=1 supersymmetric three-family flipped SU(5) model from type IIA orientifolds on T{sup 6}/(Z{sub 2}xZ{sub 2}) with D6-branes intersecting at general angles. The spectrum contains a complete grand unified and electroweak Higgs sector. In addition, it contains extra exotic matter both in bi-fundamental and vector-like representations as well as two copies of matter in the symmetric representation of SU(5)

  4. Diversity of off-shell twisted (4,4) multiplets in SU(2)xSU(2) harmonic superspace

    International Nuclear Information System (INIS)

    Ivanov, E.A.; Sutulin, A.O.

    2004-01-01

    We elaborate on four different types of twisted N=(4,4) supermultiplets in the SU(2)xSU(2), 2D harmonic superspace. In the conventional N=(4,4), 2D superspace they are described by the superfields q ia , q Ia , q IA , subjected to proper differential constraints, (i, I, a, A) being the doublet indices of four groups SU(2) which form the full R-symmetry group SO(4) L xSO(4) R of N=(4,4) supersymmetry. We construct the torsionful off-shell sigma-model actions for each type of these multiplets, as well as the corresponding invariant mass terms, in an analytic subspace of the SU(2)xSU(2) harmonic superspace. As an instructive example, N=(4,4) superconformal extension of the SU(2)xU(1) WZNW sigma-model action and its massive deformation are presented for the multiplet q iA . We prove that N=(4,4) supersymmetry requires the general sigma-model action of pair of different multiplets to split into a sum of sigma-model actions of each multiplet. This phenomenon also persists if a larger number of non-equivalent multiplets are simultaneously included. We show that different multiplets may interact with each other only through mixed mass terms which can be set up for multiplets belonging to 'self-dual' pairs (q ia , q IA ) and (q Ia , q iA ). The multiplets from different pairs cannot interact at all. For a 'self-dual' pair of the twisted multiplets we give the most general form of the on-shell scalar potential

  5. Multiple multi-orbit fermionic and bosonic pairing and rotational SU(3) algebras

    International Nuclear Information System (INIS)

    Kota, V.K.B.

    2017-01-01

    In nuclei with valence nucleons that are identical nucleons and occupy r number of j-orbits, there will be 2 r-1 number of multiple pairing (quasi-spin) SU(2) algebras with the generalized pair creation operator S + being a sum of single-j pair creation operators with arbitrary phases. Also, for each set of phases there will be a corresponding Sp(2Ω) algebra in U(2Ω) ⊃ Sp(2Ω); Ω = ∑ (2j+1)/2. Using this correspondence, derived is the condition for a general one-body operator of angular momentum rank k to be a quasi-spin scalar or a vector vis-a-vis the phases in S + . These will give special seniority selection rules for electromagnetic transitions. We found that the phase choice advocated by Arvieu and Moszkowski gives pairing Hamiltonians having maximum correlation with well known effective interactions. All the results derived for identical fermion systems are shown to extend to identical boson systems such as sd, sp, sdg and sdpf interacting boson models (IBM's) with SU(2) → SU(1,1) and Sp(2/Omega) → SO(2Ω). Going beyond pairing, for a given set of oscillator orbits, there are multiple rotational SU(3) algebras both in shell model and IBM's. Different SU(3) algebras in IBM's are shown, using sdg IBM as an example, to give different geometric shapes.

  6. Dicty_cDB: Contig-U05265-1 [Dicty_cDB

    Lifescience Database Archive (English)

    Full Text Available 9439 ) Sequence 1140 from Patent WO2006024892. 34 0.61 3 ( EL484723 ) CHUM6535.b1_M01.ab1 CHU(LMS) puzzle su... CCFS1822.b1_K24.ab1 CCF(STU) sunflower Helianthus... 42 0.71 2 ( EL476128 ) CHUL4073.b1_A12.ab1 CHU(LMS) puzzle....6 1 ( EL479088 ) CHUL7595.b1_F04.ab1 CHU(LMS) puzzle sunflower Hel... 44 5.6 1 ( EL149373 ) EB3RODY01A41QO

  7. Infinitely many N=1 dualities from m+1−m=1

    Energy Technology Data Exchange (ETDEWEB)

    Agarwal, Prarit; Intriligator, Kenneth; Song, Jaewon [Department of Physics, University of California,San Diego, La Jolla, CA 92093 (United States)

    2015-10-06

    We discuss two infinite classes of 4d supersymmetric theories, T{sub N}{sup (m)} and U{sub N}{sup (m)}, labelled by an arbitrary non-negative integer, m. The T{sub N}{sup (m)} theory arises from the 6d, A{sub N−1} type N=(2,0) theory reduced on a 3-punctured sphere, with normal bundle given by line bundles of degree (m+1,−m); the m=0 case is the N=2 supersymmetric T{sub N} theory. The novelty is the negative-degree line bundle. The U{sub N}{sup (m)} theories likewise arise from the 6d N=(2,0) theory on a 4-punctured sphere, and can be regarded as gluing together two (partially Higgsed) T{sub N}{sup (m)} theories. The T{sub N}{sup (m)} and U{sub N}{sup (m)} theories can be represented, in various duality frames, as quiver gauge theories, built from T{sub N} components via gauging and nilpotent Higgsing. We analyze the RG flow of the U{sub N}{sup (m)} theories, and find that, for all integer m>0, they end up at the same IR SCFT as SU(N) SQCD with 2N flavors and quartic superpotential. The U{sub N}{sup (m)} theories can thus be regarded as an infinite set of UV completions, dual to SQCD with N{sub f}=2N{sub c}. The U{sub N}{sup (m)} duals have different duality frame quiver representations, with 2m+1 gauge nodes.

  8. On the topological structure of the vacuum in SU(2) and SU(3) lattice gauge theories

    International Nuclear Information System (INIS)

    Ishikawa, K.; Schierholz, G.; Schneider, H.; Teper, M.

    1983-01-01

    We present Monte Carlo measurements of the net topological charge of the vacuum in SU(2) and SU(3) lattice gauge theories. In both cases there is no evidence of any topological structure, and the values obtained are a factor of 0(100) smaller than expectations based on analyses of the U(1) problem. Moreover we find a strong sensitivity to the lattice size and to the boundary conditions imposed on the lattice. We comment on the physical significance of these results, establish criteria for the reliable performance of such calculations, and remark on the possibly detrimental impact of these findings on the calculation of hadron spectra

  9. Investigations of Tissue-Level Mechanisms of Primary Blast Injury Through Modeling, Simulation, Neuroimaging and Neuropathological Studies

    Science.gov (United States)

    2012-07-10

    2007;25(1):97-98. [19] Stewart C. Blast Injuries. Colorado Springs: USAF Academy Hospital; 2006. 88 p. [20] Cernak I, Wang Z, Jiang J, Bian X, Savic J...Wang Z, Jiang J, Bian X, Savic J. Ultrastructural and Functional Characteristics of Blast Injury- Induced Neurotrauma. Journal of Trauma: Injury

  10. Jonathan's Constitutional Conference in Nigeria

    African Journals Online (AJOL)

    ian

    2013-10-01

    Oct 1, 2013 ... Adeniyi S. Basiru is an independent researcher and a PhD candidate ... constitution-making are fundamentally the exclusive reserve of the elites, ..... agenda must be situated against the background of events that heralded his.

  11. Dose-finding and pharmacokinetic study of cisplatin, gemcitabine, and SU5416 in patients with solid tumors

    NARCIS (Netherlands)

    Kuenen, Bart C.; Rosen, Lee; Smit, Egbert F.; Parson, Mandy R. N.; Levi, Marcel; Ruijter, Rita; Huisman, Holger; Kedde, Marc A.; Noordhuis, Paul; van der Vijgh, Wim J. F.; Peters, Godefridus J.; Cropp, Gillian F.; Scigalla, Paul; Hoekman, Klaus; Pinedo, Herbert M.; Giaccone, Giuseppe

    2002-01-01

    Purpose: To investigate the feasibility and pharmacokinetics of the combination cisplatin, gemcitabine, and SU5416. Patients and Methods: Patients received cisplatin 80 mg/m(2) on day 1, gemcitabine 1,250 mg/m(2) on days 1 and 8, repeated every 3 weeks, and SU5416 (85 and 145 mg/m(2)) intravenously

  12. Evidence for dynamic SU(5) symmetry breaking in meson mass multiplets

    International Nuclear Information System (INIS)

    Frikkee, E.

    1994-07-01

    It is shown that the mass differences and multiplet pattern for pseudoscalar and vector mesons correspond to a chain of dynamic symmetry reductions SU(n) contains SU(n-1)xU(1). In this symmetry-reduction model, the differences between the masses of the quark flavours are the result of intra-hadronic interactions. Quark confinement is explained as a consequence of the fact that this symmetry breaking chain only occurs in hadrons. The results of a quantitative analysis of mass splittings in meson multiplets indicate that SU(5) is probably the highest symmetry for hadron states. In the proposed dynamic symmetry breaking scheme with five quark flavours there is no one-to-one correspondence between lepton and quark generations. (orig.)

  13. A comment on the quark mixing in the supersymmetric SU(4)xO(4) GUT model

    International Nuclear Information System (INIS)

    Ranfone, S.

    1992-08-01

    The SU(4) x O(4) and the ''flipped'' SU(5) x U(1) models seem to be the only possible Grand Universal Theories (GUT's) derivable from string theories with Kac-Moody level K=1. Naively, the SU(4) x O(4) model, at least in its minimal GUT version, is characterized by the lack of any mixing in the quark sector. In this ''Comment'' we show that, although some mixing may be generated as a consequence of large vacuum-expectation-values for the scalar partners of the right-handed neutrinos, it turns out to be too small by several orders of magnitude, in net contrast with our experimental information concerning the Cabibbo mixing. Our result, which therefore rules out the minimal SU(4) x O(4) GUT model, also applies to ''flipped'' SU(5) x U(1) in the case of the embedding in SO(10). (Author)

  14. Denominator function for canonical SU(3) tensor operators

    International Nuclear Information System (INIS)

    Biedenharn, L.C.; Lohe, M.A.; Louck, J.D.

    1985-01-01

    The definition of a canonical unit SU(3) tensor operator is given in terms of its characteristic null space as determined by group-theoretic properties of the intertwining number. This definition is shown to imply the canonical splitting conditions used in earlier work for the explicit and unique (up to +- phases) construction of all SU(3) WCG coefficients (Wigner--Clebsch--Gordan). Using this construction, an explicit SU(3)-invariant denominator function characterizing completely the canonically defined WCG coefficients is obtained. It is shown that this denominator function (squared) is a product of linear factors which may be obtained explicitly from the characteristic null space times a ratio of polynomials. These polynomials, denoted G/sup t//sub q/, are defined over three (shift) parameters and three barycentric coordinates. The properties of these polynomials (hence, of the corresponding invariant denominator function) are developed in detail: These include a derivation of their degree, symmetries, and zeros. The symmetries are those induced on the shift parameters and barycentric coordinates by the transformations of a 3 x 3 array under row interchange, column interchange, and transposition (the group of 72 operations leaving a 3 x 3 determinant invariant). Remarkably, the zeros of the general G/sup t//sub q/ polynomial are in position and multiplicity exactly those of the SU(3) weight space associated with irreducible representation [q-1,t-1,0]. The results obtained are an essential step in the derivation of a fully explicit and comprehensible algebraic expression for all SU(3) WCG coefficients

  15. Detección de virus herpes canino tipo 1 en Chile Canine herpesvirus-1 detection in Chile

    OpenAIRE

    C NAVARRO; M CELEDON; J PIZARRO

    2003-01-01

    RESUMEN Este trabajo informa la detección del virus herpes canino tipo 1 (VHC-1) en nuestro país, confirmando la fuerte sospecha clínica de su existencia. Se logró obtener un aislado viral, denominado RP5, a partir de casos clínicos diagnosticados como enfermedad hemorrágica de los cachorros. Este aislado inoculado en monocapas celulares produce el típico efecto citopático de miembros de la subfamilia alphaherpesvirinae, familia Herpesviridae: lisis celular a tiempos cortos. Este aislado mani...

  16. Biorremediación de suelo contaminado con el pesticida 1,1,1-tricloro-2,2’bis(p-clorofenil)etano (DDT) mediante protocolos de bioestimulación y adición de surfactante

    OpenAIRE

    Betancur Corredor, Bibiana

    2013-01-01

    Resumen: El 1,1,1-tricloro-2,2’bis(p-clorofenil)etano (DDT) ha sido usado desde la segunda guerra mundial para controlar enfermedades transmitidas por insectos en humanos y animales domésticos. El uso de estos insecticidas organoclorados se ha prohibido en la mayoría de los países debido a su persistencia en el ambiente, susceptibilidad de biomagnificación y potencial toxicidad a animales superiores. La biorremediación involucra el uso de microorganismos para degradar contaminantes orgánic...

  17. Model with a gauged lepton flavor SU(2) symmetry

    Science.gov (United States)

    Chiang, Cheng-Wei; Tsumura, Koji

    2018-05-01

    We propose a model having a gauged SU(2) symmetry associated with the second and third generations of leptons, dubbed SU(2) μτ , of which U{(1)}_{L_{μ }-L_{τ }} is an Abelian subgroup. In addition to the Standard Model fields, we introduce two types of scalar fields. One exotic scalar field is an SU(2) μτ doublet and SM singlet that develops a nonzero vacuum expectation value at presumably multi-TeV scale to completely break the SU(2) μτ symmetry, rendering three massive gauge bosons. At the same time, the other exotic scalar field, carrying electroweak as well as SU(2) μτ charges, is induced to have a nonzero vacuum expectation value as well and breaks mass degeneracy between the muon and tau. We examine how the new particles in the model contribute to the muon anomalous magnetic moment in the parameter space compliant with the Michel decays of tau.

  18. Affective language during the H1N1 influenza health crisis

    Directory of Open Access Journals (Sweden)

    Morant Marco, Ricard

    2010-12-01

    Full Text Available In this article we analyze the effects that, as seen through the written press, the arrival of H1N1 had on certain affective behaviors in society. After the spread of H1N1, health authorities recommended maintaining physical distance in social settings and, among other measures, advised against kissing. At first, this show of affection became a victim of the pandemic, especially in certain activities and rituals. However, once the media impact of swine flu had subsided, kissing recovered its habitual place and frequency, demonstrating that customs which are socially and culturally entrenched are resistant to change.

    El presente artículo analiza los efectos que según la prensa escrita tuvo la llegada de la gripe A en ciertos comportamientos afectivos de la población. Las autoridades sanitarias, tras la expansión del virus H1N1, recomendaron aumentar la distancia social y aconsejaron, entre otras medidas, evitar los besos. Esta manifestación afectiva, en un primer momento, notó los efectos de la pandemia, sobre todo en ciertas actividades y rituales. Sin embargo, una vez pasado el impacto mediático de la gripe A, recuperó su uso y frecuencia habitual, demostrando que las costumbres fuertemente enraizadas se resisten a cambiar.

  19. Sincronización de Células de Tabaco (Nicotiana tabacum) NT-1 Synchronization of tobacco cells (Nicotiana tabacum) NT-1

    OpenAIRE

    León F Ruiz; Ana E Higareda; Marco A Pardo

    2010-01-01

    Se ha evaluado la capacidad sincronizante de afidicolina e hidroxiurea en cultivos de células de tabaco (Nicotiana tabacum) NT-1. Los cultivos sincronizados son poderosas herramientas en estudios moleculares y bioquímicos relacionados al ciclo celular y comúnmente se utilizan químicos para bloquear el ciclo celular. La línea celular de tabaco (Nicotiana tabacum) NT-1 proviene de la línea celular TBY-2, caracterizándose NT-1 por su menor velocidad de crecimiento y tamaño celular heterogéneo. L...

  20. Signature effect in the SU(3) limit of SU(6) particle-quadrupole phonon coupling model (PTQM)

    International Nuclear Information System (INIS)

    Paar, V.; Brant, S.

    1981-09-01

    Systematic deviations from the J(J + 1) energy rule in the SU(3) limit of PTQM are studied and interpreted in terms of signature from the rotational model. The signature effect, which is in the rotational mode introduced via the Coriolis force, is generated here by the correlation of PTQM. (author)

  1. O(5) x U(1) electroweak theory

    International Nuclear Information System (INIS)

    Mukku, C.; Sayed, W.A.

    1981-01-01

    An anomaly-free O(5) x U(1) theory of electroweak interactions is described which provides a unified description of electroweak phenomena for two families of standard leptons and quarks. No ''new'' nonsequential-type fermions are introduced, unlike the case for all past studies based on this group. The present scheme requires the introduction of two further charged and three more neutral gauge fields over and above those of SU(2) x U(1) giving rise to new neutral and charged currents

  2. Exclusive measurement of breakup reactions with the one-neutron halo nucleus sup 1 sup 1 Be

    CERN Document Server

    Palit, R; Aumann, T; Boretzky, K; Carlson, B V; Cortina-Gil, D; Elze, T W; Emling, H; Geissel, H; Hellström, M; Jones, K L; Kratz, J V; Kulessa, R; Leifels, Y; Leistenschneider, A; Münzenberg, G; Nociforo, C; Reiter, P; Simon, H; Sümmerer, K; Walús, W

    2003-01-01

    Electromagnetic and nuclear inelastic scattering of the halo nucleus sup 1 sup 1 Be have been investigated by a measurement of the one-neutron removal channel, utilizing a secondary sup 1 sup 1 Be beam with an energy of 520 MeV/nucleon impinging on lead and carbon targets. All decay products, i.e. sup 1 sup 0 Be fragments, neutrons, and gamma-rays have been detected in coincidence. Partial cross sections for the population of ground and excited states in sup 1 sup 0 Be were determined for nuclear diffractive breakup as well as for electromagnetically induced breakup. The partial cross sections for ground-state transitions have been differentiated further with respect to excitation energy, and the dipole-strength function associated solely with transitions of the halo 2s sub 1 sub / sub 2 neutron to the continuum has been derived. The extracted dipole strength integrated from the neutron threshold up to 6.1 MeV excitation energy amounts to 0.90(6) e sup 2 fm sup 2. A spectroscopic factor for the nu 2s sub 1 su...

  3. Vacuum structure of the SU(3) gauge field theory in the Coulomb gauge

    International Nuclear Information System (INIS)

    Yee, J.H.; Viswanathan, K.S.

    1978-01-01

    The SU(3) gauge field is studied in the Coulomb gauge. The Gribov ambiguities arising in the Coulomb gauge are analysed. Restricting to a class of spherically symmetric vacua it is shown that there exist non-trivial vacua characterized by a topological number eta=0, +-1/2, and +-2. This must be contrasted with the spherically symmetric SU(2) vacua which are characterized by eta=0, +-1/2. (Auth.)

  4. On the N=1{sup ∗} gauge theory on a circle and elliptic integrable systems

    Energy Technology Data Exchange (ETDEWEB)

    Bourget, Antoine; Troost, Jan [Laboratoire de Physique Théorique, Ecole Normale Supérieure,24 rue Lhomond, 75005 Paris (France)

    2016-01-18

    We continue our study of the N=1{sup ∗} supersymmetric gauge theory on ℝ{sup 2,1}×S{sup 1} and its relation to elliptic integrable systems. Upon compactification on a circle, we show that the semi-classical analysis of the massless and massive vacua depends on the classification of nilpotent orbits, as well as on the conjugacy classes of the component group of their centralizer. We demonstrate that semi-classically massless vacua can be lifted by Wilson lines in unbroken discrete gauge groups. The pseudo-Levi subalgebras that play a classifying role in the nilpotent orbit theory are also key in defining generalized Inozemtsev limits of (twisted) elliptic integrable systems. We illustrate our analysis in the N=1{sup ∗} theories with gauge algebras su(3), su(4), so(5) and for the exceptional gauge algebra G{sub 2}. We map out modular duality diagrams of the massive and massless vacua. Moreover, we provide an analytic description of the branches of massless vacua in the case of the su(3) and the so(5) theory. The description of these branches in terms of the complexified Wilson lines on the circle invokes the Eichler-Zagier technique for inverting the elliptic Weierstrass function. After fine-tuning the coupling to elliptic points of order three, we identify the Argyres-Douglas singularities of the su(3)N=1{sup ∗} theory.

  5. Gauge fixing conditions for the SU(3) gauge theory

    International Nuclear Information System (INIS)

    Ragiadakos, Ch.; Viswanathan, K.S.

    1979-01-01

    SU(3) gauge theory is quantized in the temporal gauge A 0 =0. Gauge fixing conditions are imposed completely on the electric field components, conjugate to the vector potential Ssub(i) that belongs to the subalgebra SO(3) of SU(3). The generating functional in terms of the independent variables is derived. It is ghost-free and may be regarded as a theory of (non-relativistic) spin-0, 1, 2, and 3 fields. (Auth.)

  6. Unconstrained SU(2) and SU(3) Yang-Mills classical mechanics

    International Nuclear Information System (INIS)

    Dahmen, B.; Raabe, B.

    1992-01-01

    A systematic study of contraints in SU(2) and SU(3) Yang-Mills classical mechanics is performed. Expect for the SU(2) case with spatial angular momenta they turn out to be nonholonomic. The complete elimination of the unphysical gauge and rotatinal degrees of freedom is achieved using Dirac's constraint formalism. We present an effective unconstrained formulation of the general SU(2) Yang-Mills classical mechanics as well as for SU(3) in the subspace of vanishing spatial angular momenta that is well suited for further explicit dynamical investigations. (orig.)

  7. An SU(5) grand unified model with hadrons as nontopological solitons. Pt. 1

    International Nuclear Information System (INIS)

    Chen Shihao

    1994-01-01

    A new grand unified model containing the known three generations of quark and lepton in which hadrons are regarded as nontopological solitons formed from quarks is presented. According to the model leptons and quarks are the same in essence. The differences between them are caused by spontaneous symmetry breaking. When a quark is located inside a hadron, its properties will be the same as those of a known quark and its mass very small. When a quark is outside hadrons, its properties will be the same as those of a known lepton, its mass very large and it will rapidly decay. Except defining charge Q 0 and fermion number F 0 which are exactly conserved, we also define interior colour, interior charge and interior fermion number approximately conserved inside a hadron. The (L-B) conservation in the known SU(5) model corresponds to the fermion number F 0 conservation in the present model

  8. Frecuencia de retinopatía diabética y su relación con algunas variables clínicas y bioquímicas asociadas a la diabetes tipo 1 Frequency of diabetic retinopathy and its relation to some clinical and biochemical variables associated with type 1 diabetes

    Directory of Open Access Journals (Sweden)

    Manuel E. Licea Puig

    2006-12-01

    Full Text Available La aparición de la retinopatía diabética (RD se asocia a la presencia de varios factores de riesgo que determinan tanto su surgimiento como el incremento de su severidad. El objetivo de este trabajo es determinar la frecuencia y severidad de la RD y su relación con algunas variables clínicas y bioquímicas en un grupo de personas con diabetes mellitus tipo 1 (DM1. Fue realizado un estudio retrospectivo y descriptivo en 240 diabéticos tipo 1 atendidos en el Centro de Atención al Diabético del Instituto Nacional de Endocrinología. Se estudiaron: edad, sexo, duración de la DM 1, presión arterial sistólica (PAS y diastólica (PAD, índice de masa corporal (IMC, hábito de fumar, glucemia en ayunas y posprandial de 2 h, hemoglobina glucosilada (HbA1, excreción urinaria de albúmina (EUA en orina de 24 h y presencia y tipo de RD: no proliferativa (RDNP y proliferativa (RD. 40,4 % de los diabéticos tenían algún tipo de RD (RDNP 35,4 % y RDP 5,0 %. A mayor edad cronológica se incrementó la frecuencia de RD. De los 39 sujetos con una DM1 de ³ 20 años de evolución, 34 tenían algún tipo de RD. La hipertensión arterial (HTA apareció en 30,6 y 50,0 % de los individuos que presentaban RDNP y RDP, respectivamente. La glucemia en ayunas fue significativamente (pThe appearance of diabetic retinopathy (DR is associated with the presence of several risk factors that determine its emergence and the increase of its severity. The objective of this paper is to know the frequency and severity of DR and its connection with some clinical and biochemical variables in a group of persons with type1 diabetes mellitus. A retrospective and descriptive study was conducted in 240 type 1 diabetics seen at the Diabetes Care Center of the National Institute of Endocrinology. The studied variables were age, sex, duration of type 1 diabetes mellitus, systolic (SAP and diastolic arterial pressure (DAP, body mass index (BMI, smoking habit, fasting and 2-hour

  9. Higgs Mass Textures in Flipped SU(5)

    CERN Document Server

    Ellis, Jonathan Richard; Rizos, J; Ellis, John

    1999-01-01

    We analyze the Higgs doublet-triplet mass splitting problem in the version of flipped SU(5) derived from string theory. Analyzing non-renormalizable terms up to tenth order in the superpotential, we identify a pattern of field vev's that keeps one pair of electroweak Higgs doublets light, while all other Higgs doublets and all Higgs triplets are kept heavy, with the aid of the economical missing-doublet mechanism found in the field-theoretical version of flipped SU(5). The solution predicts that second-generation charge -1/3 quarks and charged leptons are much lighter than those in the third generation.

  10. Study of phase transition of even and odd nuclei based on q-deforme SU(1,1) algebraic model

    Science.gov (United States)

    Jafarizadeh, M. A.; Amiri, N.; Fouladi, N.; Ghapanvari, M.; Ranjbar, Z.

    2018-04-01

    The q-deformed Hamiltonian for the SO (6) ↔ U (5) transitional case in s, d interaction boson model (IBM) can be constructed by using affine SUq (1 , 1) Lie algebra in the both IBM-1 and 2 versions and IBFM. In this research paper, we have studied the energy spectra of 120-128Xe isotopes and 123-131Xe isotopes and B(E2) transition probabilities of 120-128Xe isotopes in the shape phase transition region between the spherical and gamma unstable deformed shapes of the theory of quantum deformation. The theoretical results agree with the experimental data fairly well. It is shown that the q-deformed SO (6) ↔ U (5) transitional dynamical symmetry remains after deformation.

  11. Innovative SU-8 Lithography Techniques and Their Applications

    Directory of Open Access Journals (Sweden)

    Jeong Bong Lee

    2014-12-01

    Full Text Available SU-8 has been widely used in a variety of applications for creating structures in micro-scale as well as sub-micron scales for more than 15 years. One of the most common structures made of SU-8 is tall (up to millimeters high-aspect-ratio (up to 100:1 3D microstructure, which is far better than that made of any other photoresists. There has been a great deal of efforts in developing innovative unconventional lithography techniques to fully utilize the thick high aspect ratio nature of the SU-8 photoresist. Those unconventional lithography techniques include inclined ultraviolet (UV exposure, back-side UV exposure, drawing lithography, and moving-mask UV lithography. In addition, since SU-8 is a negative-tone photoresist, it has been a popular choice of material for multiple-photon interference lithography for the periodic structure in scales down to deep sub-microns such as photonic crystals. These innovative lithography techniques for SU-8 have led to a lot of unprecedented capabilities for creating unique micro- and nano-structures. This paper reviews such innovative lithography techniques developed in the past 15 years or so.

  12. Unconstrained SU(2) and SU(3) Yang-Mills clasical mechanics

    International Nuclear Information System (INIS)

    Dahmen, B.; Raabe, B.

    1992-01-01

    A systematic study of constraints in SU(2) and SU(3) Yang-Mills classical mechanics is performed. Expect for the SU(2) case with vanishing spatial angular momenta they turn out to be non-holonomic. Using Dirac's constraint formalism we achieve a complete elimination of the unphysical gauge and rotational degrees of freedom. This leads to an effective unconstrained formulation both for the full SU(2) Yang-Mills classical mechanics and for the SU(3) case in the subspace of vanishing spatial angular momenta. We believe that our results are well suited for further explicit dynamical investigations. (orig.)

  13. RLE (Research Laboratory of Electronics) Progress Report Number 129.

    Science.gov (United States)

    1987-01-01

    27709 ELEMENT NO. NO. NO. NO. 1. TITLE finciade SeciantV Ciiiiiiificationt Progress Report.No. 129 12. PERSONAL AUTHORI(S) Jonathan Allen, Daniel...TMIS PAGE *~ ~ d 1 ". d4 ’V. ~a PI al . 1 AN *,.i **N %** RLE Progress Report No. 129 January 1987 Submitted by: Prof. Jonathan Allen Prof. Daniel...Clevenger, J. Floro, S.M. Garrison, J. Im, K. Ismail, H. Kahn, H.J. Kim, Y.C. Ku, J.C. Licini, U. Meirav, J.E. Palmer, S.L. Park, H.M. Quek , J. Scott

  14. The search for a realistic flipped SU(5) string model

    Energy Technology Data Exchange (ETDEWEB)

    Lopez, J.L. (Center for Theoretical Physics, Texas A and M Univ., College Station, TX (United States) Astroparticle Physics Group, Houston Advanced Research Center (HARC), The Woodlands, TX (United States)); Nanopoulos, D.V. (Center for Theoretical Physics, Texas A and M Univ., College Station, TX (United States) Astroparticle Physics Group, Houston Advanced Research Center (HARC), The Woodlands, TX (United States)); Yuan, K. (Department of Physics and Astronomy, University of Alabama, Tuscaloosa, AL (United States))

    1993-07-05

    We present an extensive search for a class of flipped SU(5) models built within the free fermionic formulation of the heterotic string. We describe a set of algorithms which constitute the basis for a computer program capable of generating systematically the massless spectrum and the superpotential of all possible models within the class we consider. Our search through the huge parameter space to be explored is simplified considerably by the constraint of N=1 spacetime supersymmetry and the need for extra Q, anti Q representations beyond the standard ones in order to possibly achieve string gauge coupling unification at scales of O(10[sup 18] GeV). Our results are remarkably simple and evidence the large degree of redundancy in this kind of constructions. We find one model with gauge group SU(5)xU(1)sub(Y tilde)xSO(10)[sub h]xSU(4)[sub h]xU(1)[sup 5] and fairly acceptable phenomenological properties. We study the D- and F-flatness constraints and the symmetry breaking pattern in this model and conclude that string gauge coupling unification is quite possible. (orig.)

  15. Renormalization effects in the SU(16) maximally gauged theory

    International Nuclear Information System (INIS)

    Mahdavi-Hezaveh, E.

    1981-03-01

    In the context of a quark-lepton unified gauge theory, when fermionic degrees of freedom are maximally gauged, several intermediate mass scales filling the grand plateau, between 10 2 Gev. and the grand unifying mass scale, M, may exist. In particular, when renormalization effects are taken into account for the SU(16) ''maximal'' gauge symmetry, [in which lepton number is regarded as the fourth color quantum number], it turns out that two intermediate stages governed by the symmetries G 2 =SU(8)sub(I) S SU(8)sub(II) X U(1)sub(F) and G 3 =SU(2)sub(L) X XU(2)sub(R) X SU(4)sub(C) can naturally coexist if Sin 2 theta (Msub(W))>1/6+5/9(α(Msub(W)/αsub(S)(Msub(W)). It is shown that these symmetries break down at a mass scale of the order of Msub(X) approximately equal to 10 4 -10 5 Gev. If neutral current phenomenology (or any other experiment) predicts Sin 2 theta (Msub(W))>0.206, then quark-lepton unification and left-right symmetry simultaneously break down at M approximately equal to 10 4 Gev. (at which αsub(C)(Msub(X) approximately equal to 0.041). It is then argued that apart from proton decay, n-anti n oscillation and neutrinoless double β decay processes, an accurate experimental value of Sin 2 theta (Msub(W)), to α 10 -4 accuracy) plays a crucial role in determining the possible existence of such intermediate stages. (author)

  16. SU-8 Photolithography as a Toolbox for Carbon MEMS

    Directory of Open Access Journals (Sweden)

    Rodrigo Martinez-Duarte

    2014-09-01

    Full Text Available The use of SU-8 as precursor for glass-like carbon, or glassy carbon, is presented here. SU-8 carbonizes when subject to high temperature under inert atmosphere. Although epoxy-based precursors can be patterned in a variety of ways, photolithography is chosen due to its resolution and reproducibility. Here, a number of improvements to traditional photolithography are introduced to increase the versatility of the process. The shrinkage of SU-8 during carbonization is then detailed as one of the guidelines necessary to design carbon patterns. A couple of applications—(1 carbon-electrode dielectrophoresis for bioparticle manipulation; and (2 the use of carbon structures as micro-molds are also presented.

  17. Integrable deformations of the Gk1 ×Gk2 /Gk1+k2 coset CFTs

    Science.gov (United States)

    Sfetsos, Konstantinos; Siampos, Konstantinos

    2018-02-01

    We study the effective action for the integrable λ-deformation of the Gk1 ×Gk2 /Gk1+k2 coset CFTs. For unequal levels theses models do not fall into the general discussion of λ-deformations of CFTs corresponding to symmetric spaces and have many attractive features. We show that the perturbation is driven by parafermion bilinears and we revisit the derivation of their algebra. We uncover a non-trivial symmetry of these models parametric space, which has not encountered before in the literature. Using field theoretical methods and the effective action we compute the exact in the deformation parameter β-function and explicitly demonstrate the existence of a fixed point in the IR corresponding to the Gk1-k2 ×Gk2 /Gk1 coset CFTs. The same result is verified using gravitational methods for G = SU (2). We examine various limiting cases previously considered in the literature and found agreement.

  18. Integrable deformations of the Gk1×Gk2/Gk1+k2 coset CFTs

    Directory of Open Access Journals (Sweden)

    Konstantinos Sfetsos

    2018-02-01

    Full Text Available We study the effective action for the integrable λ-deformation of the Gk1×Gk2/Gk1+k2 coset CFTs. For unequal levels theses models do not fall into the general discussion of λ-deformations of CFTs corresponding to symmetric spaces and have many attractive features. We show that the perturbation is driven by parafermion bilinears and we revisit the derivation of their algebra. We uncover a non-trivial symmetry of these models parametric space, which has not encountered before in the literature. Using field theoretical methods and the effective action we compute the exact in the deformation parameter β-function and explicitly demonstrate the existence of a fixed point in the IR corresponding to the Gk1−k2×Gk2/Gk1 coset CFTs. The same result is verified using gravitational methods for G=SU(2. We examine various limiting cases previously considered in the literature and found agreement.

  19. SU(N) instantons in the field strength approach to QCD

    International Nuclear Information System (INIS)

    Reinhardt, H.

    1994-01-01

    Field strength formulated Yang-Mills theory is confronted to the traditional formulation in terms of gauge fields. It is shown that both formulations yield the same semiclassics, in particular the same instanton physics. The field strength formulation is, however, superior at the tree level where it includes already a good deal of quantum fluctuations of the standard formulation. These quantum fluctuations break the scale invariance of classical QCD and give rise to an instanton interaction. The latter causes the instanton to condense and to form a homogeneous instanton solid. These instanton solids show up in the field strength approach as homogeneous (constant up to gauge transformations) vacuum solutions. A new class of SU(N) instantons is presented which are not embeddings of SU(N-1) instantons but have non-trivial SU(N) color structure and carry winding number n = N/(N 2 -1)/6. These novel instantons generate (after condensation) the lowest action homogeneous solutions of the field strength approach. (orig.)

  20. Water Activated Doping and Transport in Multilayered Germanane Crystals

    Science.gov (United States)

    2015-09-21

    Justin Young, Basant Chitara , Nicholas Cultrara , Maxx Q Arguilla , Shishi Jiang, Fan Fan , Ezekiel Johnston-Halperin, Joshua E Goldberger 611102 c...Crystals Justin R Young1, Basant Chitara2, Nicholas D Cultrara2, Maxx Q Arguilla2, Shishi Jiang2, Fan Fan2 Ezekiel Johnston-Halperin1, Joshua E...Optoelectronics ACS Nano 7 5660-5 [9] Zhang Y, Tan Y-W, Stormer H L and Kim P 2005 Experimental observation of the quantum Hall effect and Berry’s phase in

  1. Simulating plasma instabilities in SU(3) gauge theory

    International Nuclear Information System (INIS)

    Berges, Juergen; Gelfand, Daniil; Scheffler, Sebastian; Sexty, Denes

    2009-01-01

    We compute nonequilibrium dynamics of plasma instabilities in classical-statistical lattice gauge theory in 3+1 dimensions. The simulations are done for the first time for the SU(3) gauge group relevant for quantum chromodynamics. We find a qualitatively similar behavior as compared to earlier investigations in SU(2) gauge theory. The characteristic growth rates are about 25% lower for given energy density, such that the isotropization process is slower. Measured in units of the characteristic screening mass, the primary growth rate is independent of the number of colors.

  2. SO(2N) and SU(N) gauge theories

    OpenAIRE

    Lau, Richard; Teper, Michael

    2013-01-01

    We present our preliminary results of SO(2N) gauge theories, approaching the large-N limit. SO(2N) theories may help us to understand QCD at finite chemical potential since there is an orbifold equivalence between SO(2N) and SU(N) gauge theories at large-N and SO(2N) theories do not have the sign problem present in QCD. We consider the string tensions, mass spectra, and deconfinement temperatures in the SO(2N) pure gauge theories in 2+1 dimensions, comparing them to their corresponding SU(N) ...

  3. Is neutralino dark matter compatible with flipped SU(5) models

    Energy Technology Data Exchange (ETDEWEB)

    McDonald, J.

    1989-07-13

    We consider the possibility that the lightest supersymmetric particle in flipped SUSY SU(5)xU(1) models is cosmologically stable and corresponds to a neutralino. Previous studies of dark matter in flipped SUSY SU(5) models have suggested that the decay of the oscillations of the SU(5) breaking scalar field would result in too many neutralinos, if they are stable. We show that it is possible for an acceptable density of neutralinos to occur in the case where the neutralino corresponds to a light photino, if the temperature at the end of the oscillation dominated period is SU(5) models. Direct detection of dark matter in forthcoming experiments will therefore not eliminate this class of models. (orig.).

  4. String tensions for lattice gauge theories in 2+1 dimensions

    International Nuclear Information System (INIS)

    Ambjoern, J.; Hey, A.J.G.; Otto, S.

    1982-01-01

    Compact U(1) and SU(2) lattice gauge theories in 3 euclidean dimensions are studied by standard Monte Carlo techniques. The question of extracting reliable string tensions from these theories is examined in detail, including a comparison of the Monte Carlo Wilson loop data with weak coupling predictions and a careful error analysis: our conclusions are rather different from those of previous investigations of these theories. In the case of U(1) theory, we find that only a tiny range of β values can possibly be relevant for extracting a string tension and we are unable to convincingly demonstrate the expected exponential dependence of the string tension on β. For the SU(2) theory we are able to determine, albeit with rather large errors, a string tension from a study of Wilson loops. (orig.)

  5. La Víctima de Trata Sexual y su Des-protección en la Ley Integral contra la Violencia de Género 1/2004 (The Sexual Trafficking Victims and Des-protection in the Law Against Gender Violence 1/2004

    Directory of Open Access Journals (Sweden)

    Izaskun Orbegozo

    2015-06-01

    Full Text Available In this article I make a reflection about the art. 1 L0 1/2004 of 28 December of integral Protection Measures against Gender Violence (law 1/2004 and its relations with sexual trafficking victims, who are absent in these regulation, and as a result any kind of protection.Taking into an account, the most important international instruments aiming at the elimination of violence against women, I am going to focus on sexual trafficking victims and gender violence from the point of view of criminology and victimology, and finally, on the meaning of violence gender from different perspectives, making an special mention to the concept regulated in the article 1 of the integral 1/2004. En el presente artículo realizo una reflexión sobre el art. 1 de la L0 1/2004, de 28 de diciembre, de medidas de Protección integral contra la violencia de género (en adelante ley integral 1/2004 y su relación con las víctimas de trata sexual, ausentes en dicha normativa, y por consiguiente, carentes de protección. Partiendo de los instrumentos internacionales más relevantes que tienen por finalidad la eliminación de la violencia contra la mujer, me centraré en la víctima de trata sexual como violencia de género desde un punto de vista criminológico y victimológico, y finalmente, abordaré el significado de violencia de género desde diversas perspectivas, haciendo mención especial al concepto regulado en el art.1 de la ley integral 1/2004. DOWNLOAD THIS PAPER FROM SSRN: http://ssrn.com/abstract=2612021

  6. Insulin-like growth factor type 1 and its relation with neuropsychiatric disorders

    Directory of Open Access Journals (Sweden)

    Jonathan Adrián Zegarra-Valdivia

    2017-08-01

    Full Text Available Resumen El estudio de distintos factores neurotróficos, entre ellos, el factor de crecimiento insulínico tipo 1, ha alcanzado relevancia en los últimos años por su rol en la actividad cerebral y sus potenciales aplicaciones terapéuticas. En el presente artículo se realiza una revisión del factor de crecimiento insulínico tipo 1 vinculado a trastornos neuropsiquiátricos como el autismo, la ansiedad, depresión, trastorno de estrés post traumático y la enfermedad de Alzheimer. Esto nos permitirá conocer su relación e importancia en dichos trastornos, en distintas etapas del desarrollo. Se realizó una búsqueda exhaustiva de distintos artículos originales, estudios clínicos, experimentales y de revisión, en las bases de datos de MEDLINE/PubMed y ScienceDirect, seleccionando 80 publicaciones de alto impacto posteriores al año 2000. Se concluye que a pesar de las muchas funciones del factor de crecimiento insulínico tipo 1 que han sido estudiadas en el sistema nervioso en desarrollo, así como en el cerebro adulto y especialmente con modelos animales, no se comprende completamente su papel en el cerebro humano con trastornos neuropsiquiátricos. Los datos son contradictorios en lo referente a trastornos altamente prevalentes, como los que afectan al estado del ánimo. Sin embargo, se encuentran mayores implicancias en los trastornos neurodegenerativos. Adicionalmente se señala su alto potencial como recurso terapéutico en trastornos neuropsiquiátricos de difícil abordaje, como el autismo y la enfermedad de Alzheimer. No obstante ello, es necesario efectuar una mayor investigación, tanto a nivel básico y clínico aplicado, para entender completamente su relevancia en estos trastornos.

  7. Gestión centralizada de la iluminación en Terminal 1 del aeropuerto Barcelona-El Prat

    OpenAIRE

    Borraz Rocafull, Óscar

    2017-01-01

    Este trabajo consiste en el estudio de una gestión centralizada de iluminación en la Terminal T1 del Aeropuerto de Barcelona-El Prat. Se dan a conocer los sistemas y subsistemas del control de iluminación, con base KNX-EIB (sistema estándar de interconexión de dispositivos) y su central de gestión. También se explican los fallos encontrados al finalizar la obra de construcción de la T1 (terminada en 2009) o los sucedidos durante su operatividad. Así como mejoras para su func...

  8. Avoiding the secondary magnetic monopole problem in the inflation theories: The 75 of SU(5)

    International Nuclear Information System (INIS)

    Kim, C.W.; Kim, J.E.; Kim, J.S.

    1985-01-01

    A class of inflation models suffer from the secondary monopole problem which cannot be diluted by inflation. Using the Coleman-Weinberg potential for the 75-dimensional representation of SU(5), we suggest a group theoretical way to avoid the problem. It is shown that the vacuum, when released from the origin, starts to evolve and roll down along the Sp(4) . U(1) direction. It is noticed that the 75 provides an option for the vacuum to roll down to the SU(3) . SU(2) . U(1) vacuum without causing the secondary cosmological monopole problem. (orig.)

  9. Targeted activation of endothelin-1 exacerbates hypoxia-induced pulmonary hypertension

    International Nuclear Information System (INIS)

    Satwiko, Muhammad Gahan; Ikeda, Koji; Nakayama, Kazuhiko; Yagi, Keiko; Hocher, Berthold; Hirata, Ken-ichi; Emoto, Noriaki

    2015-01-01

    Pulmonary arterial hypertension (PAH) is a fatal disease that eventually results in right heart failure and death. Current pharmacologic therapies for PAH are limited, and there are no drugs that could completely cure PAH. Enhanced activity of endothelin system has been implicated in PAH severity and endothelin receptor antagonists have been used clinically to treat PAH. However, there is limited experimental evidence on the direct role of enhanced endothelin system activity in PAH. Here, we investigated the correlation between endothelin-1 (ET-1) and PAH using ET-1 transgenic (ETTG) mice. Exposure to chronic hypoxia increased right ventricular pressure and pulmonary arterial wall thickness in ETTG mice compared to those in wild type mice. Of note, ETTG mice exhibited modest but significant increase in right ventricular pressure and vessel wall thickness relative to wild type mice even under normoxic conditions. To induce severe PAH, we administered SU5416, a vascular endothelial growth factor receptor inhibitor, combined with exposure to chronic hypoxia. Treatment with SU5416 modestly aggravated hypoxia-induced pulmonary hypertension, right ventricular hypertrophy, and pulmonary arterial vessel wall thickening in ETTG mice in association with increased interleukin-6 expression in blood vessels. However, there was no sign of obliterative endothelial cell proliferation and plexiform lesion formation in the lungs. These results demonstrated that enhanced endothelin system activity could be a causative factor in the development of PAH and provided rationale for the inhibition of endothelin system to treat PAH. - Highlights: • Role of endothelin-1 in pulmonary arterial hypertension (PAH) was investigated. • The endothelin-1 transgenic (ETTG) and wild type (WT) mice were analyzed. • ETTG mice spontaneously developed PAH under normoxia conditions. • SU5416 further aggravated PAH in ETTG mice. • Enhanced endothelin system activity could be a causative factor in

  10. Targeted activation of endothelin-1 exacerbates hypoxia-induced pulmonary hypertension

    Energy Technology Data Exchange (ETDEWEB)

    Satwiko, Muhammad Gahan [Division of Cardiovascular Medicine, Department of Internal Medicine, Kobe University Graduate School of Medicine, Kobe (Japan); Ikeda, Koji [Department of Clinical Pharmacy, Kobe Pharmaceutical University, Kobe (Japan); Nakayama, Kazuhiko [Division of Cardiovascular Medicine, Department of Internal Medicine, Kobe University Graduate School of Medicine, Kobe (Japan); Yagi, Keiko [Department of Clinical Pharmacy, Kobe Pharmaceutical University, Kobe (Japan); Hocher, Berthold [Institute for Nutritional Science, University of Potsdam, Potsdam (Germany); Hirata, Ken-ichi [Division of Cardiovascular Medicine, Department of Internal Medicine, Kobe University Graduate School of Medicine, Kobe (Japan); Emoto, Noriaki, E-mail: emoto@med.kobe-u.ac.jp [Division of Cardiovascular Medicine, Department of Internal Medicine, Kobe University Graduate School of Medicine, Kobe (Japan); Department of Clinical Pharmacy, Kobe Pharmaceutical University, Kobe (Japan)

    2015-09-25

    Pulmonary arterial hypertension (PAH) is a fatal disease that eventually results in right heart failure and death. Current pharmacologic therapies for PAH are limited, and there are no drugs that could completely cure PAH. Enhanced activity of endothelin system has been implicated in PAH severity and endothelin receptor antagonists have been used clinically to treat PAH. However, there is limited experimental evidence on the direct role of enhanced endothelin system activity in PAH. Here, we investigated the correlation between endothelin-1 (ET-1) and PAH using ET-1 transgenic (ETTG) mice. Exposure to chronic hypoxia increased right ventricular pressure and pulmonary arterial wall thickness in ETTG mice compared to those in wild type mice. Of note, ETTG mice exhibited modest but significant increase in right ventricular pressure and vessel wall thickness relative to wild type mice even under normoxic conditions. To induce severe PAH, we administered SU5416, a vascular endothelial growth factor receptor inhibitor, combined with exposure to chronic hypoxia. Treatment with SU5416 modestly aggravated hypoxia-induced pulmonary hypertension, right ventricular hypertrophy, and pulmonary arterial vessel wall thickening in ETTG mice in association with increased interleukin-6 expression in blood vessels. However, there was no sign of obliterative endothelial cell proliferation and plexiform lesion formation in the lungs. These results demonstrated that enhanced endothelin system activity could be a causative factor in the development of PAH and provided rationale for the inhibition of endothelin system to treat PAH. - Highlights: • Role of endothelin-1 in pulmonary arterial hypertension (PAH) was investigated. • The endothelin-1 transgenic (ETTG) and wild type (WT) mice were analyzed. • ETTG mice spontaneously developed PAH under normoxia conditions. • SU5416 further aggravated PAH in ETTG mice. • Enhanced endothelin system activity could be a causative factor in

  11. SIRT1 expression is associated with poor prognosis of lung adenocarcinoma

    Directory of Open Access Journals (Sweden)

    Li C

    2015-04-01

    Full Text Available Chong Li,1,2,* Lingling Wang,3,* Liang Zheng,4 Xianghong Zhan,4 Bin Xu,1,2 Jingting Jiang,1,2 Changping Wu1,2 1Department of Tumor Biological Treatment, the Third Affiliated Hospital, Soochow University, Changzhou, 2Cancer Immunotherapy Engineering Research Center of Jiangsu Province, Changzhou, 3Department of Medical Education, Jinling Hospital, Medical School of Nanjing University, Nanjing, 4Department of Thoracic Surgery, the Third Affiliated Hospital, Soochow University, Changzhou, Jiangsu, People’s Republic of China *These authors contributed equally to this work Abstract: Several studies have reported that the overexpression of Sirtuin 1 (SIRT1 was associated with poor prognosis in various human cancers. However, little is known regarding the prognostic value of SIRT1 in lung adenocarcinoma. Therefore, the aim of this study is to evaluate the role of SIRT1 in the prognosis of lung adenocarcinoma patients. Using a tissue microarray, we detected SIRT1 expression by immunohistochemistry in lung adenocarcinoma tissue, as well as in corresponding noncancerous tissues (NCTs. A high expression level of SIRT1 was observed in 74.7% (56/75 of patients with lung adenocarcinoma and 6.7% (5/75 of NCTs (P<0.001. SIRT1 expression was significantly associated with high pathological stage. Importantly, we found that SIRT1 expression was associated with worse overall survival in these lung adenocarcinoma patients (67.0 months vs 104.5 months; P=0.005. In addition, anaplastic lymphoma kinase, epidermal growth factor receptor, vascular endothelial growth factor (VEGF, and Survivin expression were evaluated by fluorescent in situ hybridization or immunohistochemistry, respectively. We found that VEGF and Survivin were both highly expressed in the lung adenocarcinoma tissues, as compared to NCTs. Moreover, the SIRT1 and VEGF expression statuses were significantly positively correlated (r=0.238, P=0.039, while SIRT1 and Survivin expression status were not

  12. On Parametrization of the Linear GL(4,C) and Unitary SU(4) Groups in Terms of Dirac Matrices

    Science.gov (United States)

    Red'Kov, Victor M.; Bogush, Andrei A.; Tokarevskaya, Natalia G.

    2008-02-01

    Parametrization of 4 × 4-matrices G of the complex linear group GL(4,C) in terms of four complex 4-vector parameters (k,m,n,l) is investigated. Additional restrictions separating some subgroups of GL(4,C) are given explicitly. In the given parametrization, the problem of inverting any 4 × 4 matrix G is solved. Expression for determinant of any matrix G is found: det G = F(k,m,n,l). Unitarity conditions G+ = G-1 have been formulated in the form of non-linear cubic algebraic equations including complex conjugation. Several simplest solutions of these unitarity equations have been found: three 2-parametric subgroups G1, G2, G3 - each of subgroups consists of two commuting Abelian unitary groups; 4-parametric unitary subgroup consis! ting of a product of a 3-parametric group isomorphic SU(2) and 1-parametric Abelian group. The Dirac basis of generators Λk, being of Gell-Mann type, substantially differs from the basis λi used in the literature on SU(4) group, formulas relating them are found - they permit to separate SU(3) subgroup in SU(4). Special way to list 15 Dirac generators of GL(4,C) can be used {Λk} = {μiÅνjÅ(μiVνj = KÅL ÅM )}, which permit to factorize SU(4) transformations according to S = eiaμ eibνeikKeilLeimM, where two first factors commute with each other and are isomorphic to SU(2) group, the three last ones are 3-parametric groups, each of them consisting of three Abelian commuting unitary subgroups. Besides, the structure of fifteen Dirac matrices Λk permits to separate twenty 3-parametric subgroups in SU(4) isomorphic to SU(2); those subgroups might be used as bigger elementary blocks in constructing of a general transformation SU(4). It is shown how one can specify the present approach for the pseudounitary group SU(2,2) and SU(3,1).

  13. Santa Ana River Design Memorandum Number 1. Phase 2. GDM on the Santa Ana River Mainstem Including Santiago Creek. Volume 1. Seven Oaks Dam. Appendix A

    Science.gov (United States)

    1988-08-01

    su0.0001,4 from full depth of west0 wall of 23.656 lb. somple f5 , maso o~s ora atsow below exc Of test pit of teot pit. IL 4+ __ -H.~gv MASS GRADATION MASS...s * -W I * a am9 a a a 0 6 a a a a a a a a a a a Sa ~ ~ ~ o a’ a.1aa a a a a a a a a J . . a a a a acca aO a1 1 1 1 a aa a 1- a a 1 as- Is a1 a a a a

  14. Origin and phenomenology of weak-doublet spin-1 bosons

    International Nuclear Information System (INIS)

    Chizhov, M.V.; Dvali, Gia

    2011-01-01

    We study phenomenological consequences of the Standard Model extension by the new spin-1 fields with the internal quantum numbers of the electroweak Higgs doublets. We show, that there are at least three different classes of theories, all motivated by the hierarchy problem, which predict appearance of such vector weak-doublets not far from the weak scale. The common feature for all the models is the existence of an SU(3) W gauge extension of the weak SU(2) W group, which is broken down to the latter at some energy scale around TeV. The Higgs doublet then emerges as either a pseudo-Nambu-Goldstone boson of a global remnant of SU(3) W , or as a symmetry partner of the true eaten-up Goldstone boson. In the third class, the Higgs is a scalar component of a high-dimensional SU(3) W gauge field. The common phenomenological feature of these theories is the existence of the electroweak doublet vectors (Z * ,W * ), which in contrast to well-known Z ' and W ' bosons posses only anomalous (magnetic moment type) couplings with ordinary light fermions. This fact leads to some unique signatures for their detection at the hadron colliders.

  15. The anemodata 1-IIE. Automatic system for wind data acquisition; El anemodata 1-IIE. Sistema automatico para la adquisicion de datos de viento

    Energy Technology Data Exchange (ETDEWEB)

    Borja, Marco Antonio; Parkman Cuellar, Pablo A [Instituto de Investigaciones Electricas, Cuernavaca (Mexico)

    1987-12-31

    Wind is an inexhaustible energy source. To study its behavior in order to develop research projects and apply new technologies connected to its maximum development is one of the activities carried on at the Instituto de Investigaciones Electricas (IIE). As a part of such activities, the equipment Anemodata-1-IIE was designed and built for the wind velocity and direction data acquisition. The Anemodata-1-IIE is the result of the work that the Departamento de Fuentes no Convencionales (Non-Conventional Energy Sources of the Energy Sources Department) carries on regarding the development of electric equipment for the anemometry. [Espanol] Una fuente inagotable de energia es el viento. Estudiar su comportamiento para desarrollar proyectos de investigacion y aplicar nuevas tecnologias vinculadas con su maximo aprovechamiento es una de las actividades que se realizan en el Instituto de Investigaciones Electricas (IIE). Como parte de dichas actividades, se diseno y construyo el equipo Anemodata-1-IIE para la adquisicion de datos de velocidad y direccion del viento. El anemodata-1-IIE es un resultado de los trabajos que el Departamento de Fuentes no Convencionales, de la division de Fuentes de Energia, lleva a cabo en torno al desarrollo de equipo electrico para anemometria.

  16. The anemodata 1-IIE. Automatic system for wind data acquisition; El anemodata 1-IIE. Sistema automatico para la adquisicion de datos de viento

    Energy Technology Data Exchange (ETDEWEB)

    Borja, Marco Antonio; Parkman Cuellar, Pablo A. [Instituto de Investigaciones Electricas, Cuernavaca (Mexico)

    1986-12-31

    Wind is an inexhaustible energy source. To study its behavior in order to develop research projects and apply new technologies connected to its maximum development is one of the activities carried on at the Instituto de Investigaciones Electricas (IIE). As a part of such activities, the equipment Anemodata-1-IIE was designed and built for the wind velocity and direction data acquisition. The Anemodata-1-IIE is the result of the work that the Departamento de Fuentes no Convencionales (Non-Conventional Energy Sources of the Energy Sources Department) carries on regarding the development of electric equipment for the anemometry. [Espanol] Una fuente inagotable de energia es el viento. Estudiar su comportamiento para desarrollar proyectos de investigacion y aplicar nuevas tecnologias vinculadas con su maximo aprovechamiento es una de las actividades que se realizan en el Instituto de Investigaciones Electricas (IIE). Como parte de dichas actividades, se diseno y construyo el equipo Anemodata-1-IIE para la adquisicion de datos de velocidad y direccion del viento. El anemodata-1-IIE es un resultado de los trabajos que el Departamento de Fuentes no Convencionales, de la division de Fuentes de Energia, lleva a cabo en torno al desarrollo de equipo electrico para anemometria.

  17. SO(14) unification of 3+1 families

    International Nuclear Information System (INIS)

    Karadayi, H.R.

    1982-03-01

    It is shown that the unification of 3+1 families is possible within the framework of 64 dimensional spinor representation of SO(14). Special care is given for a description without the heavy excess fermions such as conjugate and mirror or completely exotic fermions of some family unification schemes. With the aid of an intrinsic ''L-R Asymmetry'' mechanism which we proposed recently, the conventional strong and electromagnetic interactions are obtained for all four families by concentrating only on the symmetry breaking SO(14) → SU(3)sub(c) x U(1)sub(e.m.). However, the conventional weak interactions of the first three families are obtained just as in the standard SU(2)sub(L) x U(1)sub(Y) model, while those of the prescribed fourth family show certain differences. This is what we mean by 3+1 family unification. All vector particles mediating strong, electromagnetic and weak interactions which are the subjects of present phenomenological tests are specified among the vector fields of SO(14) and their mass mechanisms leading to a consistent description of this low-energy phenomenology are studied with the aid of the Higgs multiplets 14, 364, 1716 and 2002 of SO(14). Moreover, the fermion mass mechanisms are considered with the aid of these scalar multiplets and the contributions from these scalars to the vector and fermion masses are explicitly calculated. All these calculations are carried out in the new mathematical technique for the Lie algebra representations which we introduced recently. (author)

  18. Yang-Mills-Higgs solitons dynamics in (2+1)-dimensions

    International Nuclear Information System (INIS)

    Getmanov, B.S.; Sutcliffe, P.M.

    1998-01-01

    Dimensional reduction of the self-dual Yang-Mills (sd YM) equation in (2+2) dimensions produces an integrable Yang-Mills-Higgs-Bogomolny equation in (2+1) dimensions. For an SU(1,1) gauge group a t'Hooft-like ansatz is used to construct a monopole-like solution and an N-soliton-type solution, which describes static deformed monopoles together with exotic monopole dynamics, including transmutation. Finally, we show how our monopole solution has a surprisingly simple form in terms of the twistor construction, and make some remarks regarding multimonopole solutions

  19. Evaluation of physical constants and operators in the SU(2) and SU(3) lattice gauge theory

    International Nuclear Information System (INIS)

    Tsuchida, R.H.

    1987-01-01

    Wilson loops and Wilson lines in the fundamental and the adjoint representations of SU(2) on the lattice are measured using the icosahedral subgroup and a noise reduction technique. The string tension was evaluated by fitting the expectation value of loops of all sizes to a 6-parameter curve. From the Wilson lines in the adjoint representation of SU(2), two kinds of gluon potentials were measured: the gluon-gluon interaction potential and the gluon-image interaction potential. The effective mass of the gluon was evaluated on each of those potentials and compared. In SU(3), the contribution of s anti σ/sub μnu/F/sub μnu/d operator to the correction of effective weak four-quark operator in the measurement of ΔI = 1/2 amplitude of kaon decay is examined. The renormalization of the critical hopping parameter is calculated perturbatively and compared with the Monte Carlo results. The VEV of psi anti psi operator is measured on the lattice. In the hopping parameter renormalization calculation and the psi anti psi measurements, the effects of expanding of Feynman diagrams in power of a, the lattice spacing, are examined

  20. Land cover of oases and forest in XinJiang, China retrieved from ASTER data

    Science.gov (United States)

    Buhe, Aosier; Tsuchiya, K.; Kaneko, M.; Ohtaishi, N.; Halik, Mahmut

    ASTER aboard NASA’s satellite Terra is a high-resolution multispectral radiometer of 14 bands. The spatial resolution is 15 m in VNIR, 30 m in SWIR and 90 m in TIR spectra, respectively. With the data observed with ASTER, the land cover classification is produced for the Tarim Diversifolious Poplar Protection Area along the Tarim River in the northern Tarim Basin (Taklamakan Desert) in XinJiang, China. The classification of the vegetation (plants) in the arid and semiarid regions using remote-sensing technology is very difficult. Because the cause has low vegetable cover density and the influence of reflection from background soil is large. ASTER data are effective in studying the spectrum characteristics of land cover in arid and semiarid regions. The sensor has several bands in the shortwave infrared wavelength region that is designed for exploration of earth resources and study of the arid and semiarid region natural environment. However, we are not clear combination of which band is the most effective in research of the arid region like the Taklamakan desert in the data of 14 bands of ASTER. The optimum index factor (OIF), based on total variance within bands and correlation coefficient between bands, is a statistical approach to rank all possible three-band combinations. In the process of analyzing the data, the pixel sizes of all the data are converted (layer stacking and re-sampling) into consistent same size of 15 m. The three-band composite with the largest OIF value will have most information (as measured by variance) with the least amount of duplication (as measured by correlation). We used the OIF technique to rank all three-band combinations of ASTER original 14-band data over Tarim River Poplar Protection Area. Our study indicates that RGB color overlay using atmospheric corrected ASTER original bands 2, 3 (VNIR), and 6 (SWIR) has the highest OIF. When NDVI is considered as one ASTER band, highest OIF will have by carrying out bands 3 (VNIR), 4

  1. Random SU(2) invariant tensors

    Science.gov (United States)

    Li, Youning; Han, Muxin; Ruan, Dong; Zeng, Bei

    2018-04-01

    SU(2) invariant tensors are states in the (local) SU(2) tensor product representation but invariant under the global group action. They are of importance in the study of loop quantum gravity. A random tensor is an ensemble of tensor states. An average over the ensemble is carried out when computing any physical quantities. The random tensor exhibits a phenomenon known as ‘concentration of measure’, which states that for any bipartition the average value of entanglement entropy of its reduced density matrix is asymptotically the maximal possible as the local dimensions go to infinity. We show that this phenomenon is also true when the average is over the SU(2) invariant subspace instead of the entire space for rank-n tensors in general. It is shown in our earlier work Li et al (2017 New J. Phys. 19 063029) that the subleading correction of the entanglement entropy has a mild logarithmic divergence when n  =  4. In this paper, we show that for n  >  4 the subleading correction is not divergent but a finite number. In some special situation, the number could be even smaller than 1/2, which is the subleading correction of random state over the entire Hilbert space of tensors.

  2. Neutrino masses in flipped SU(5)

    Energy Technology Data Exchange (ETDEWEB)

    Abel, S.A. (Bristol Univ. (UK). H.H. Wills Physics Lab.)

    1990-01-04

    It is demonstrated that the, recently proposed, SU(5)xU(1) unification scheme is one of only a small number of the current candidates that allows, in its parameter space, the possibility of heavy neutrinos. This is due to the fact that the usual GIM suppression mechanism does not operate, leading to fast decays of heavy tau neutrinos of the form {nu}{yields}{nu}{gamma}, with an estimated lifetime of O(1 yr) for a tau neutrino mass of 1 MeV. Using well known cosmological arguments, based on the observed 3 K background radiation, the mass of the electron neutrino is constrained to be either greater than O(1 eV), or less than the usual limit of O(10{sup -2} eV). (orig.).

  3. Prospects for discovery of supersymmetric No-Scale F-SU(5) at the once and future LHC

    Science.gov (United States)

    Li, Tianjun; Maxin, James A.; Nanopoulos, Dimitri V.; Walker, Joel W.

    2012-06-01

    We present the reach of the Large Hadron Collider (LHC) into the parameter space of No-Scale F-SU(5), starting our analysis with the current operating energy of √{s}=7 TeV, and extending it on through the bright future of a 14 TeV beam. No-Scale F-SU(5) is a model defined by the confluence of the F-lipped SU(5) Grand Unified Theory, two pairs of hypothetical TeV scale vector-like supersymmetric multiplets with origins in F-theory, and the dynamically established boundary conditions of No-Scale Supergravity. When searching for a five standard deviation signal, we find that the CMS experiment at the √{s}=7 TeV LHC began to penetrate the phenomenologically viable parameter space of this model at just under 1 fb of integrated luminosity, and that the majority of this space remains intact, subsequent to analyses of the first 1.1 fb of CMS data. On the contrary, the ATLAS experiment had not reached the F-SU(5) parameter space in its first 1.34 fb of luminosity. Since the CMS and ATLAS detectors have now each amassed a milestone of 5 fb of collected luminosity, the current LHC is presently effectively probing No-Scale F-SU(5). Upon the crossing of the 5 fb threshold, the 7 TeV LHC will have achieved five standard deviation discoverability for a unified gaugino mass of up to about 532 GeV, a light stop of 577 GeV, a gluino of 728 GeV, and heavy squarks of just over 1 TeV. Extending the analysis to include a future LHC center-of-mass beam energy of √{s}=14 TeV, the full model space of No-Scale F-SU(5) should be visible to CMS at about 30 fb of integrated luminosity. We stress that the F-SU(5) discoverability thresholds discussed here are contingent upon retaining only those events with nine jets or more for the CMS experiment and seven jets or more for the ATLAS experiment.

  4. Exact scattering in the SU(n) supersymmetric principal chiral model

    CERN Document Server

    Evans, J M; Evans, Jonathan M; Hollowood, Timothy J

    1997-01-01

    The complete spectrum of states in the supersymmetric principal chiral model based on SU(n) is conjectured, and an exact factorizable S-matrix is proposed to describe scattering amongst these states. The SU(n)_L*SU(n)_R symmetry of the lagrangian is manifest in the S-matrix construction. The supersymmetries, on the other hand, are incorporated in the guise of spin-1/2 charges acting on a set of RSOS kinks associated with su(n) at level n. To test the proposed S-matrix, calculations of the change in the ground-state energy in the presence of a coupling to a background charge are carried out. The results derived from the lagrangian using perturbation theory and from the S-matrix using the TBA are found to be in complete agreement for a variety of background charges which pick out, in turn, the highest weight states in each of the fundamental representations of SU(n). In particular, these methods rule out the possibility of additional CDD factors in the S-matrix. Comparison of the expressions found for the free-...

  5. Electronic records' 1.4 m pounds annual saving.

    Science.gov (United States)

    Baillie, Jonathan

    2011-03-01

    The St. Helens & Knowsley Teaching Hospitals NHS Trust says it has reached a significant milestone in a major project via which it aims to cease completely using paper-based patient records and other patient-related information such as discharge summaries and X-ray results by converting all such documentation to online electronic form. With the purchase of three Kodak high-speed document scanners, which digitise the files, and a tailored version of C Cube Solutions' electronic document management software (EDMS), all 27 hospital departments at the Trust's two main acute hospitals have now "gone live" with the radical new system for medical records, and, as HEJ editor Jonathan Baillie reports, preparations are in hand to convert other important patient documentation into electronic form.

  6. Sequence similarity between the erythrocyte binding domain 1 of the Plasmodium vivax Duffy binding protein and the V3 loop of HIV-1 strain MN reveals binding residues for the Duffy Antigen Receptor for Chemokines

    OpenAIRE

    Bolton, Michael J; Garry, Robert F

    2011-01-01

    Abstract Background The surface glycoprotein (SU, gp120) of the human immunodeficiency virus (HIV) must bind to a chemokine receptor, CCR5 or CXCR4, to invade CD4+ cells. Plasmodium vivax uses the Duffy Binding Protein (DBP) to bind the Duffy Antigen Receptor for Chemokines (DARC) and invade reticulocytes. Results Variable loop 3 (V3) of HIV-1 SU and domain 1 of the Plasmodium vivax DBP share a sequence similarity. The site of amino acid sequence similarity was necessary, but not sufficient, ...

  7. Elevated soluble urokinase plasminogen activator receptor (suPAR) predicts mortality in Staphylococcus aureus bacteremia

    DEFF Research Database (Denmark)

    Mölkänen, T; Ruotsalainen, E; Thorball, C W

    2011-01-01

    The soluble form of urokinase-type plasminogen activator receptor (suPAR) is a new inflammatory marker. High suPAR levels have been shown to associate with mortality in cancer and in chronic infections like HIV and tuberculosis, but reports on the role of suPAR in acute bacteremic infections...... are scarce. To elucidate the role of suPAR in a common bacteremic infection, the serum suPAR levels in 59 patients with Staphylococcus aureus bacteremia (SAB) were measured using the suPARnostic ELISA assay and associations to 1-month mortality and with deep infection focus were analyzed. On day three, after...... the first positive blood culture for S. aureus, suPAR levels were higher in 19 fatalities (median 12.3; range 5.7-64.6 ng/mL) than in 40 survivors (median 8.4; range 3.7-17.6 ng/mL, p = 0.002). This difference persisted for 10 days. The presence of deep infection focus was not associated with elevated su...

  8. JONATHAN׳S TRANSFORMATIONAL LEADERSHIP IN NIGERIA ...

    African Journals Online (AJOL)

    leaders, leaders that are more than accomplished administrators and managers. They need .... (1999), leadership is both the adhesive that bind a work group together and the ... profound effect on their followers׳ beliefs regarding what the organization should become. ..... understandable, precise, powerful and engaging.

  9. Journal of Genetics | Indian Academy of Sciences

    Indian Academy of Sciences (India)

    Author Affiliations. Lihua Jiang1 Aiyi Zhu1 Jianse Zhang1 Changwen Wu1. National Engineering Research Center of Marine Facilities Aquaculture, College of Marine Science, Zhejiang Ocean University, Zhoushan 316022, China ...

  10. Infiltration SuDS Map

    OpenAIRE

    Dearden, Rachel

    2012-01-01

    Infiltration SuDS are sustainable drainage systems (SuDS) that allow surface water to infiltrate to the ground. Examples include soakaways, infiltration basins, infiltration trenches and permeable pavements. Before planning to install Infiltration SuDS, the suitability of the ground should be assessed. The British Geological Survey has developed a bespoke Infiltration SuDS Map that enables a preliminary assessment of the suitability of the ground for infiltration SuDS. Th...

  11. ETANOL + 1-NONANOL İKİLİ SİSTEMİ VE ETANOL + 1-NONANOL + SU ÜÇLÜ SİSTEMİNİN 293.15 K SICAKLIKTAKİ YOĞUNLUKLARININ, REFRAKTİF İNDİSLERİN ÖLÇÜLMESİ VE AŞIRI MOLAR HACİMLERİNİN VE MOLAR REFRAKSİYONLARININ HESAPLANMASI

    OpenAIRE

    MAHRAMANLIOĞLU, Mehmet; KIRBAŞLAR, Ş. İsmail

    2000-01-01

    Etanol+1-nonanol ikili sistemi ve etanol+1-nonanol+su üçlü sistemi için çeşitli karışımlarda yoğunluklar ve kırılma indisleri 293.15 K de ölçülmüştür. İkili ve üçlü sistemler için aşırı molar hacim ve molar refraksiyon sapmaları hesaplanmıştır. Aşırı molar hacim ve molar refraksiyon sapmaları için Redlich–Kister eşitliği uygulanarak eşitlik katsayıları hesaplanmıştır.

  12. Estado Vital de la Materia. Su origen, su evolución y su futuro.

    Directory of Open Access Journals (Sweden)

    J. Hernando Ordoñez

    2001-04-01

    Full Text Available

    En este artlculo se hacen algunas observaciones sobre un estado de la materia (estado vital, propuesto para reemplazar el de materia viva, que se usa habitualmente.

    La materia en estado vital se organiza por una fuerza interna, que podríamos calificar como inteligente, que hace que los átomos se orienten y se organicen con determinada finalidad para fabricar células, para modelar órganos y, éstos, para culminar su obra integrándose con la armonía más admirable, para constituirse en organismos ya sea vegetales o animales.

    Los planetas no tienen materia en estado vital; son masas que giran y giran, aparentemente sin finalidad conocida. En cambio, en nuestro planeta una buena parte de su masa adquirió vida, lo que llamamos biomasa, que abarca todos los organismos vivos, tanto vegetales como animales, en una proporción tal que si se pudiera calcular su peso nos daría cifras astronómicas.

    Sobre el futuro de nuestro sol los científicos predicen que en los próximos 1.100 millones de años aumentará su luminosidad en un 10%. Esto sobre calentará a la Tierra como consecuencia de un severo efecto de invernadero. El agua de los mares y océanos hervirá y la vida en el planeta se extinguirá.

    El universo está constituido por energía y materia, que pueden transformarse la una en la otra. La energía se presenta en varias fases, entre ellas, en la energía eléctrica, la luz y el calor, cuya naturaleza íntima nos es tan desconocida. La materia también está en varios estados: sólido, líquido, gaseoso, iónico, molecular y coloidal.

    En el presente estudio intento hacer algunas observaciones sobre otro estado de la materia, que he denominado estado vital, nombre que propongo para reemplazar el de materia viva, que se usa habitualmente. Par hacerlo me baso en una consideración elemental: los átomos que integran la biomasa terrestre son los mismos que constituyen la materia inerte, no están vivos. En

  13. E1 transitions in the Harari quark model

    International Nuclear Information System (INIS)

    Kamath, S.G.

    1976-10-01

    The radiative decays psi(3.684)→γchi(sup(3)P sub(J)) and chi(sup(3)Psub(J)→chipsi(3.1) have been analyzed within the framework of the Harari quark model. The spatial matrix elements describing these L=1 to L=0 transitions have been estimated from the A 2 (1310)→ chirho(770) mode by applying U(6) symmetry at the quark level. The resulting decay widths, which compare very well with experimental data, have subsequently been used to determine the SU(3)sub(H) assignments for the chi states

  14. Broken SU(5) x SU(5) chiral symmetry and the classification of B mesons

    International Nuclear Information System (INIS)

    Hatzis, M.

    1984-01-01

    We consider broken SU(5) x SU(5) chiral summetry and we assume that the vacuum is SU(5)-symmetric. Using the observed mass spectrum of pseudoscalar mesons, and setting the bu mass in the range 5.2 +- 0.06 GeV, we predict the masses of bs, bc, and etasub(b) states as well as axial current couplings fsub(i)/fsub(π). SU(5) x SU(5) is found to be consistent with SU(4) x SU(4) breaking. The problem of eta - eta' - eta sub(c) - eta sub(b) mixing is also discussed

  15. Reconocimiento alogénico: su papel protector durante la infección por el virus de la inmunodeficiencia humana tipo1 (VIH-1

    Directory of Open Access Journals (Sweden)

    María Teresa Rugeles López

    2004-03-01

    Full Text Available

    Varios estudios han señalado la importancia de la respuesta alogénica en la protección a la infección por el VIH-1; inclusive, se ha propuesto la aloinmunización como una vacuna profiláctica (1. Sin embargo, la evidencia más fuerte de que el aloreconocimiento contribuye a la protección contra la infección con el VIH-1 es aportada por un estudio de transmisión perinatal realizado en Nairobi. En este estudio la transmisión vertical se correlacionó con el grado de concordancia entre los alelos del CMH clase I entre la madre y el bebé: el máximo grado de concordancia se asoció con un 31% de incidencia de transmisión, mientras que la infección ocurrió solo en un 3% de niños que tenían el máximo grado de disparidad con su madre (2. La incidencia de la transmisión vertical del VIH-1 es del 25-30% en ausencia de terapia antirretroviral (3. El hecho de que el 70-75% de recién nacidos no nazca infectado, a pesar de haber estado expuesto en forma continua al virus, sugiere la existencia de barreras protectoras que previenen la transmisión vertical durante la gestación y el parto. Aunque existen reportes de inmunidad celular neonatal específica anti VIH-(4, otros mecanismos deben contribuir a la protección del feto y a prevenir la transmisión vertical. Recientemente, se reportó que factores solubles que se encuentran en la placenta, importantes para la implantación y el desarrollo del embrión, inhiben la replicación del VIH-1 in vitro.

    Entre estos factores se destacan: el factor inhibidor de leucemias (LIF (5, la hormona gonadotropina coriónica humana (hCG (6 y el factor derivado de células estromales tipo 1 (SDF-1 (7. Adicionalmente, en 1996 se describió la producción in vitro de un factor soluble que se genera en cultivos mixtos de linfocitos (CML conocido como ASF (8

  16. Likelihood analysis of supersymmetric SU(5) GUTs

    Energy Technology Data Exchange (ETDEWEB)

    Bagnaschi, E.; Weiglein, G. [DESY, Hamburg (Germany); Costa, J.C.; Buchmueller, O.; Citron, M.; Richards, A.; De Vries, K.J. [Imperial College, High Energy Physics Group, Blackett Laboratory, London (United Kingdom); Sakurai, K. [University of Durham, Science Laboratories, Department of Physics, Institute for Particle Physics Phenomenology, Durham (United Kingdom); University of Warsaw, Faculty of Physics, Institute of Theoretical Physics, Warsaw (Poland); Borsato, M.; Chobanova, V.; Lucio, M.; Martinez Santos, D. [Universidade de Santiago de Compostela, Santiago de Compostela (Spain); Cavanaugh, R. [Fermi National Accelerator Laboratory, Batavia, IL (United States); University of Illinois at Chicago, Physics Department, Chicago, IL (United States); Roeck, A. de [CERN, Experimental Physics Department, Geneva (Switzerland); Antwerp University, Wilrijk (Belgium); Dolan, M.J. [University of Melbourne, ARC Centre of Excellence for Particle Physics at the Terascale, School of Physics, Parkville (Australia); Ellis, J.R. [King' s College London, Theoretical Particle Physics and Cosmology Group, Department of Physics, London (United Kingdom); Theoretical Physics Department, CERN, Geneva 23 (Switzerland); Flaecher, H. [University of Bristol, H.H. Wills Physics Laboratory, Bristol (United Kingdom); Heinemeyer, S. [Campus of International Excellence UAM+CSIC, Cantoblanco, Madrid (Spain); Instituto de Fisica Teorica UAM-CSIC, Madrid (Spain); Instituto de Fisica de Cantabria (CSIC-UC), Santander (Spain); Isidori, G. [Universitaet Zuerich, Physik-Institut, Zurich (Switzerland); Olive, K.A. [University of Minnesota, William I. Fine Theoretical Physics Institute, School of Physics and Astronomy, Minneapolis, MN (United States)

    2017-02-15

    We perform a likelihood analysis of the constraints from accelerator experiments and astrophysical observations on supersymmetric (SUSY) models with SU(5) boundary conditions on soft SUSY-breaking parameters at the GUT scale. The parameter space of the models studied has seven parameters: a universal gaugino mass m{sub 1/2}, distinct masses for the scalar partners of matter fermions in five- and ten-dimensional representations of SU(5), m{sub 5} and m{sub 10}, and for the 5 and anti 5 Higgs representations m{sub H{sub u}} and m{sub H{sub d}}, a universal trilinear soft SUSY-breaking parameter A{sub 0}, and the ratio of Higgs vevs tan β. In addition to previous constraints from direct sparticle searches, low-energy and flavour observables, we incorporate constraints based on preliminary results from 13 TeV LHC searches for jets + E{sub T} events and long-lived particles, as well as the latest PandaX-II and LUX searches for direct Dark Matter detection. In addition to previously identified mechanisms for bringing the supersymmetric relic density into the range allowed by cosmology, we identify a novel u{sub R}/c{sub R} - χ{sup 0}{sub 1} coannihilation mechanism that appears in the supersymmetric SU(5) GUT model and discuss the role of ν{sub τ} coannihilation. We find complementarity between the prospects for direct Dark Matter detection and SUSY searches at the LHC. (orig.)

  17. Likelihood analysis of supersymmetric SU(5) GUTs

    Energy Technology Data Exchange (ETDEWEB)

    Bagnaschi, E. [DESY, Hamburg (Germany); Costa, J.C. [Imperial College, London (United Kingdom). Blackett Lab.; Sakurai, K. [Durham Univ. (United Kingdom). Inst. for Particle Physics Phenomonology; Warsaw Univ. (Poland). Inst. of Theoretical Physics; Collaboration: MasterCode Collaboration; and others

    2016-10-15

    We perform a likelihood analysis of the constraints from accelerator experiments and astrophysical observations on supersymmetric (SUSY) models with SU(5) boundary conditions on soft SUSY-breaking parameters at the GUT scale. The parameter space of the models studied has 7 parameters: a universal gaugino mass m{sub 1/2}, distinct masses for the scalar partners of matter fermions in five- and ten-dimensional representations of SU(5), m{sub 5} and m{sub 10}, and for the 5 and anti 5 Higgs representations m{sub H{sub u}} and m{sub H{sub d}}, a universal trilinear soft SUSY-breaking parameter A{sub 0}, and the ratio of Higgs vevs tan β. In addition to previous constraints from direct sparticle searches, low-energy and avour observables, we incorporate constraints based on preliminary results from 13 TeV LHC searches for jets+E{sub T} events and long-lived particles, as well as the latest PandaX-II and LUX searches for direct Dark Matter detection. In addition to previously-identified mechanisms for bringing the supersymmetric relic density into the range allowed by cosmology, we identify a novel u{sub R}/c{sub R}-χ{sup 0}{sub 1} coannihilation mechanism that appears in the supersymmetric SU(5) GUT model and discuss the role of ν{sub T} coannihilation. We find complementarity between the prospects for direct Dark Matter detection and SUSY searches at the LHC.

  18. On the infrared divergences of the CP sup(n-1) models

    International Nuclear Information System (INIS)

    Cobra, B.B.; Gomes, M.

    1982-07-01

    Some properties of the two-dimensional SU(n) non-linear sigma models, i.e., the CP (sub n-1) models are discussed. They are 1/n expandable and ultraviolet renormalizable. The main result is a proof that the infrared divergences associated with the topological gauge field are cancelled in the case of Green functions of gauge invariant operators. (Author) [pt

  19. ADAR1 attenuates allogeneic graft rejection by suppressing miR-21 biogenesis in macrophages and promoting M2 polarization.

    Science.gov (United States)

    Li, Junjie; Xie, Jiangang; Liu, Shanshou; Li, Xiao; Zhang, Dongliang; Wang, Xianqi; Jiang, Jinquan; Hu, Wei; Zhang, Yuan; Jin, Boquan; Zhuang, Ran; Yin, Wen

    2018-04-25

    ADAR1 (adenosine deaminase acting on double-stranded RNA 1) is an RNA-editing enzyme that mediates adenosine-to-inosine RNA editing events, an important post-transcriptional modification mechanism that can alter the coding properties of mRNA or regulate microRNA biogenesis. ADAR1 also regulates the innate immune response. Here, we have demonstrated that ADAR1 expression increased in LPS-stimulated macrophages. Silencing ADAR1 by using small interfering RNA in macrophages resulted in the pronounced polarization of macrophages to M1, whereas ADAR1 overexpression promoted M2 polarization, which indicated that ADAR1 can inhibit macrophage hyperpolarization and prevent immune hyperactivity. The RNA-RNP immunoprecipitation binding assay demonstrated a direct interaction between ADAR1 and miR-21 precursor. Significant up-regulation in IL-10 and down-regulation in miR-21 were observed in ADAR1-overexpressing macrophages. We evaluated miR-21 target mRNAs and macrophage polarization signaling pathways and found that forkhead box protein O1 (Foxo1) was up-regulated in cells that overexpressed ADAR1. In a mouse allogeneic skin transplantation model, grafts in the ADAR1-overexpressed group survived longer and suffered less immune cell infiltration. In ADAR1-overexpressed recipients, splenic macrophages were significantly polarized to M2, and levels of sera IL-10 were markedly higher than those in the control group. In summary, ADAR1 modulates macrophage M2 polarization via the ADAR1-miR-21-Foxo1-IL-10 axis, thereby suppressing allogeneic graft rejection.-Li, J., Xie, J., Liu, S., Li, X., Zhang, D., Wang, X., Jiang, J., Hu, W., Zhang, Y., Jin, B., Zhuang, R., Yin, W. ADAR1 attenuates allogeneic graft rejection by suppressing miR-21 biogenesis in macrophages and promoting M2 polarization.

  20. Phenomenology with supersymmetric flipped SU(6)

    Energy Technology Data Exchange (ETDEWEB)

    Shafi, Qaisar E-mail: shafi@bartol.udel.edu; Tavartkiladze, Zurab E-mail: tavzur@axpfe1.fe.infn.it

    1999-07-12

    The supersymmetric flipped SU(6) x U(1) gauge symmetry can arise through compactification of the ten-dimensional E{sub 8} x E{sub 8} superstring theory. We show how realistic phenomenology can emerge from this theory by supplementing it with the symmetry R x U(1), where R denotes a discrete 'R'-symmetry. The well-known doublet-triplet splitting problem is resolved to 'all orders' via the pseudo-Goldstone mechanism, and the GUT scale arises from an interplay of the Planck and supersymmetry breaking scales. The symmetry R x U(1) is also important for understanding the fermion mass hierarchies as well as the magnitudes of the CKM matrix elements. Furthermore, the well-known MSSM parameter tan {beta} is estimated to be of order unity, while the proton lifetime ({tau}{sub p} {approx} 10{sup 2}{tau}{sub pSU(5)}) is consistent with observations. Depending on some parameters, p {yields} K{mu}{sup +} can be the dominant decay mode. Finally, the observed solar and atmospheric neutrino 'anomalies' requir us to introduce a 'sterile' neutrino state. Remarkably, the R x U(1) symmetry protects it from becoming heavy, so that maximal angle {nu}{sub {mu}} oscillations into a sterile state can explain the atmospheric anomaly, while the solar neutrino puzzle is resolved via the small angle {nu}{sub e} - {nu}{sub {tau}} MSW oscillations. The existence of some ({approx} 15-20% of critical energy density) neutrino hot dark matter is also predicted.

  1. 26 CFR 1.172-13 - Product liability losses.

    Science.gov (United States)

    2010-04-01

    ... 3. Y, a professional medical association, is sued by B, a patient, in an action based on the malpractice of one of its doctors. B recovers $25,000. Because the suit was based on the services of B, the... 172(j)(3) not to have section 172(b)(1)(I) apply. (4) Relationship with section 172(b)(3)(C) election...

  2. Bi cluster-assembled interconnects produced using SU8 templates

    International Nuclear Information System (INIS)

    Partridge, J G; Matthewson, T; Brown, S A

    2007-01-01

    Bi clusters with an average diameter of 25 nm have been deposited from an inert gas aggregation source and assembled into thin-film interconnects which are formed between planar electrical contacts and supported on Si substrates passivated with Si 3 N 4 or thermally grown oxide. A layer of SU8 (a negative photoresist based on EPON SU-8 epoxy resin) is patterned using optical or electron-beam lithography, and it defines the position and dimensions of the cluster film. The conduction between the contacts is monitored throughout the deposition/assembly process, and subsequent I(V) characterization is performed in situ. Bi cluster-assembled interconnects have been fabricated with nanoscale widths and with up to 1:1 thickness:width aspect ratios. The conductivity of these interconnects has been increased, post-deposition, using a simple thermal annealing process

  3. SU (N ) spin-wave theory: Application to spin-orbital Mott insulators

    Science.gov (United States)

    Dong, Zhao-Yang; Wang, Wei; Li, Jian-Xin

    2018-05-01

    We present the application of the SU (N ) spin-wave theory to spin-orbital Mott insulators whose ground states exhibit magnetic orders. When taking both spin and orbital degrees of freedom into account rather than projecting Hilbert space onto the Kramers doublet, which is the lowest spin-orbital locked energy levels, the SU (N ) spin-wave theory should take the place of the SU (2 ) one due to the inevitable spin-orbital multipole exchange interactions. To implement the application, we introduce an efficient general local mean-field method, which involves all local fluctuations, and develop the SU (N ) linear spin-wave theory. Our approach is tested firstly by calculating the multipolar spin-wave spectra of the SU (4 ) antiferromagnetic model. Then, we apply it to spin-orbital Mott insulators. It is revealed that the Hund's coupling would influence the effectiveness of the isospin-1 /2 picture when the spin-orbital coupling is not large enough. We further carry out the SU (N ) spin-wave calculations of two materials, α -RuCl3 and Sr2IrO4 , and find that the magnonic and spin-orbital excitations are consistent with experiments.

  4. Fundamentals of the 3-3-1 model with heavy leptons

    Science.gov (United States)

    Correia, F. C.

    2018-04-01

    This work is a brief presentation of the theory based on the {SU}{(3)}c \\otimes {SU}{(3)}L\\otimes U{(1)}X gauge group in the presence of heavy leptons. Recent studies [1] have considered a set of four possible variants for the 3-3-1HL, whose content arises according to the so-denoted variable β. Since it has been argued about the presence of stable charged particles in this sort of model, we divide the different sectors of the Lagrangian between universal and specific vertices, and conclude that the omission of β-dependent terms in the potential may induce discrete symmetry for the versions defined by | β | =\\sqrt{3}. In the context of | β | =\\tfrac{1}{\\sqrt{3}}, where the new degrees of freedom have the same standard electric charges, additional Yukawa interactions may create decay channels into the SM sector. Furthermore, motivated by a general consequence of the Goldstone theorem, a method of diagonalization by parts is introduced in the Scalar sector and provides a clarification on the definition of mass eigenstates. In summary, we develop the most complete set of terms allowed by the symmetry group and resolve their definitive pieces in order to justify the model description present in the literature.

  5. The SU(4), SU(2)xSU(2) chain

    International Nuclear Information System (INIS)

    Partensky, A.; Maguin, C.

    1976-11-01

    The main results of a work concerning the calculation of the matrices of the generators of SU(4) in a given (p,p',p'') irreducible representation, in which the states are labelled by the spin quantum numbers, S, MS, are given. Then the SU(4) algebra is defined, the labelling problem of the states is discussed and the Racah formula transformed, which facilitates the calculation. The semi-reduced matrix elements of the Q, Vsup(Q) and Wsup(Q) vectors are defined. Finally an explicit formulation of the matrix elements of Q is given, in the particular case T=p for any S, or S=p for any T; the example of the (3 2 0) irreducible representation is treated

  6. Tres Danzas Sencillas, Opus 1.

    Directory of Open Access Journals (Sweden)

    Miguel Pinto Campa

    2010-11-01

    Full Text Available Las “Tres Danzas Sencillas” catalogadas con el Opus 1, originalmente fueron escritas para piano en la época que el compositor ocupaba el puesto de  violista principal en la Orquesta Sinfónica de Villaclara, con sede en su ciudad natal, Santa Clara, y donde había nacido Miguel Pinto Campa el 9 de Junio  de 1945; 17 años antes de escribir la primera de estas Danzas, “En forma de Son”, que fuera escrita a petición de la pianista cubana Rosario Franco,  quien la estrenara el día 19 de Mayo de 1965 en el Palacio de Bellas Artes de la Habana y que en una misiva fechada en la ciudad de Matanzas el 29 de mayo de 1965 comenta en uno de sus párrafos.”Estimado Pinto: Le envío anuncios y programas que dan constancia del estreno de su obra. El público estaba muy interesado en saber quien era Ud., por lo que he pedido se agreguen notas al programa para mi próxima gira por Oriente”.................................................

  7. Sığır Etinde Su Tutma Kapasitesi ve Serbest Su Oranı Değişimi Üzerine bir Araştırma

    Directory of Open Access Journals (Sweden)

    Aydın Öztan

    2015-02-01

    Full Text Available Kesimden sonra ette pH değişimi, etin serbest su oranı ve su tutma kapasitesinin belirlenmesinde en önemli kriterdir. Bu araştırmada; 12 adet sığır karkasında M. Trapezius kasında kesimde, kesimden 1 saat 24 saat ve 48 saat sonra pH ölçümleri yapılmış, kompressium yöntemi ile serbest su oranı ve üç farklı yöntemle su tutma kapasitesi saptanmıştır. Pres yönteminde; süzgeç kağıtlarında toplam su alanı (T ve et alanı (Ev ek scanner ile taranmış, bilgisayarda alan ölçümleri yapılmıştır. PH-değeri bakımından zaman ve hayvan değişkenleri önemli bulunmuştur. Ette serbest su oranı rigor mortis döneminde (24 saat artmış, daha sonra düşmeye başlamıştır. Örneklerde su tutma kapasitesi kesimden başlayarak olgunlaşma periyodunda rigor mortis sonuna kadar düşmüş, daha sonra yükselmeye başlamıştır.

  8. Proving the AGT relation for N f = 0, 1, 2 antifundamentals

    Science.gov (United States)

    Hadasz, Leszek; Jaskólski, Zbigniew; Suchanek, Paulina

    2010-06-01

    Using recursive relations satisfied by Nekrasov partition functions and by irregular conformal blocks we prove the AGT correspondence in the case of mathcal{N} = 2 superconformal SU(2) quiver gauge theories with N f = 0, 1, 2 antifundamental hypermultiplets.

  9. Duality between SU(N)k and SU(k)N WZW models

    International Nuclear Information System (INIS)

    Naculich, S.G.; Schnitzer, H.J.

    1990-01-01

    We exhibit a duality of the SU(N) k WZW model under interchange of the group parameter N and the level k. The primary fields of SU(N) k and SU(k) N are related by transposition of their associated Young tableaux. The holomorphic blocks of the four-point functions of the primary fields are in one-to-one correspondence, and satisfy orthogonality and completeness relations with respect to one another. We derive these relations through a path integral realization of the SU(N) k WZW model in terms of a theory of constrained Dirac fermions. (orig.)

  10. Proceedings of Damping 󈨟, 13-15 February 1991, San Diego, California; Volume 1 (Pages AAC-1 through DCC-19)

    Science.gov (United States)

    1991-08-01

    SUPPLEMENTARY NOTATION Pages AAC-1 through DCC-19 17. COSATI CODES FIELD GROUP SU8 -GROUP 18. SUBJECT TERMS (Continue on reverse if necessary and...Direct Complex Stiffness Method Bradley R. Allen and Earl Pinson Direct Measurement of the Dynamic Material Properties of Polymers EB A for Low...half of the members are in nonmetallic industries ( many are in polymer industries ) and belong to the maker’s side of damping materials. About 35

  11. Relationship between harmonic analysis on SU(2) and on SL(2,C)/SU(2)

    International Nuclear Information System (INIS)

    Healy, D.M. Jr.

    1986-01-01

    A topic of interest in harmonic analysis is the comparison of Fourier transforms on compact and noncompact spaces. The Poisson summation formula provides a classical example of this idea by providing an explicit relationship between harmonic analysis on the real line R and on the circle S 1 . This dissertation provides a new geometric proof of this formula, and then generalizes this approach to obtain a relationship between Fourier transforms on Upsilon, the space of positive matrices in SL(2,C), and Fourier transforms on SU(2)

  12. Oleanolic acid induces mitochondrial-dependent apoptosis and G0/G1 phase arrest in gallbladder cancer cells

    Directory of Open Access Journals (Sweden)

    Li HF

    2015-06-01

    Full Text Available Huai-Feng Li,1–3,* Xu-An Wang,1–3,* Shan-Shan Xiang,1–3,* Yun-Ping Hu,1–3 Lin Jiang,1–3 Yi-Jun Shu,1–3 Mao-Lan Li,1–3 Xiang-Song Wu,1–3 Fei Zhang,1–3 Yuan-Yuan Ye,1–3 Hao Weng,1–3 Run-Fa Bao,1–3 Yang Cao,1–3 Wei Lu,1–3 Qian Dong,1–3 Ying-Bin Liu1–3 1Department of General Surgery, 2Laboratory of General Surgery, 3Institute of Biliary Tract Disease, Xinhua Hospital, Affiliated to Shanghai Jiao Tong University, School of Medicine, Shanghai, People’s Republic of China *These authors contributed equally to this work Abstract: Oleanolic acid (OA, a naturally occurring triterpenoid, exhibits potential antitumor activity in many tumor cell lines. Gallbladder carcinoma is the most common malignancy of the biliary tract, and is a highly aggressive tumor with an extremely poor prognosis. Unfortunately, the effects of OA on gallbladder carcinoma are unknown. In this study, we investigated the effects of OA on gallbladder cancer cells and the underlying mechanism. The results showed that OA inhibits proliferation of gallbladder cancer cells in a dose-dependent and time-dependent manner on MTT and colony formation assay. A flow cytometry assay revealed apoptosis and G0/G1 phase arrest in GBC-SD and NOZ cells. Western blot analysis and a mitochondrial membrane potential assay demonstrated that OA functions through the mitochondrial apoptosis pathway. Moreover, this drug inhibited tumor growth in nude mice carrying subcutaneous NOZ tumor xenografts. These data suggest that OA inhibits proliferation of gallbladder cancer cells by regulating apoptosis and the cell cycle process. Thus, OA may be a promising drug for adjuvant chemotherapy in gallbladder carcinoma. Keywords: oleanolic acid, gallbladder carcinoma, apoptosis, cell cycle arrest, mitochondrial pathway

  13. Non-Abelian flux tubes in N=1 SQCD: Supersizing world-sheet supersymmetry

    International Nuclear Information System (INIS)

    Shifman, M.; Yung, A.

    2005-01-01

    We consider non-Abelian 1/2 Bogomol'nyi-Prasad-Sommerfield (BPS) flux tubes (strings) in a deformed N=2 supersymmetric gauge theory, with mass terms μ 1,2 of the adjoint fields breaking N=2 down to N=1. The main feature of the non-Abelian strings is the occurrence of orientational moduli associated with the possibility of rotations of their color fluxes inside a global SU(N) group. The bulk four-dimensional theory has four supercharges; half-criticality of the non-Abelian strings would imply then N=1 supersymmetry on the world sheet, i.e. two supercharges. In fact, superalgebra of the reduced moduli space has four supercharges. Internal dynamics of the orientational moduli are described by a two-dimensional CP(N-1) model on the string world sheet. We focus mainly on the SU(2) case, i.e. CP(1) world-sheet theory. We show that non-Abelian BPS strings exist for all values of μ 1,2 . The low-energy theory of moduli is indeed CP(1), with four supercharges, in a wide region of breaking parameters μ 1,2 . Only in the limit of very large μ 1,2 , above some critical value does the N=2 world-sheet supersymmetry break down to N=1. We observe 'supersymmetry emergence' for the flux-tube junction (confined monopole): The kink-monopole is half-critical considered from the standpoint of the world-sheet CP(1) model (i.e. two supercharges conserved), while in the bulk N=1 theory there is no monopole central charge at all

  14. Journal of Genetics | Indian Academy of Sciences

    Indian Academy of Sciences (India)

    Author Affiliations. Jiandong Wu1 Xiaolei Jin1 Yang Zhao1 Qing Dong1 Haiyang Jiang1 Qing Ma1. Key Laboratory of Crop Biology of Anhui Province, School of Life Sciences, Anhui Agricultural University, Hefei 230036, People's Republic of China ...

  15. Mode-locked fiber laser using SU8 resist incorporating carbon nanotubes

    Science.gov (United States)

    Hernandez-Romano, Ivan; Mandridis, Dimitrios; May-Arrioja, Daniel A.; Sanchez-Mondragon, Jose J.; Delfyett, Peter J.

    2011-06-01

    We report the fabrication of a saturable absorber made of a novel polymer SU8 doped with Single Wall Carbon Nanotubes (SWCNTs). A passive mode-locked ring cavity fiber laser was built with a 100 μm thick SU8/SWCNT film inserted between two FC/APC connectors. Self-starting passively mode-locked lasing operation was observed at 1572.04 nm, with a FWHM of 3.26 nm. The autocorrelation trace was 1.536 ps corresponding to a pulse-width of 871 fs. The time-bandwidth product was 0.344, which is close enough to transform-limited sech squared pulses. The repetition rate was 21.27 MHz, and a maximum average output power of 1 mW was also measured.

  16. 3-3-1 models at electroweak scale

    International Nuclear Information System (INIS)

    Dias, Alex G.; Montero, J.C.; Pleitez, V.

    2006-01-01

    We show that in 3-3-1 models there exist a natural relation among the SU(3) L coupling constant g, the electroweak mixing angle θ W , the mass of the W, and one of the vacuum expectation values, which implies that those models can be realized at low energy scales and, in particular, even at the electroweak scale. So that, being that symmetries realized in Nature, new physics may be really just around the corner

  17. Spectral properties of embedded Gaussian unitary ensemble of random matrices with Wigner's SU(4) symmetry

    International Nuclear Information System (INIS)

    Vyas, Manan; Kota, V.K.B.

    2010-01-01

    For m fermions in Ω number of single particle orbitals, each fourfold degenerate, we introduce and analyze in detail embedded Gaussian unitary ensemble of random matrices generated by random two-body interactions that are SU(4) scalar [EGUE(2)-SU(4)]. Here the SU(4) algebra corresponds to the Wigner's supermultiplet SU(4) symmetry in nuclei. Embedding algebra for the EGUE(2)-SU(4) ensemble is U(4Ω) contains U(Ω) x SU(4). Exploiting the Wigner-Racah algebra of the embedding algebra, analytical expression for the ensemble average of the product of any two m particle Hamiltonian matrix elements is derived. Using this, formulas for a special class of U(Ω) irreducible representations (irreps) {4 r , p}, p = 0, 1, 2, 3 are derived for the ensemble averaged spectral variances and also for the covariances in energy centroids and spectral variances. On the other hand, simplifying the tabulations of Hecht for SU(Ω) Racah coefficients, numerical calculations are carried out for general U(Ω) irreps. Spectral variances clearly show, by applying Jacquod and Stone prescription, that the EGUE(2)-SU(4) ensemble generates ground state structure just as the quadratic Casimir invariant (C 2 ) of SU(4). This is further corroborated by the calculation of the expectation values of C 2 [SU(4)] and the four periodicity in the ground state energies. Secondly, it is found that the covariances in energy centroids and spectral variances increase in magnitude considerably as we go from EGUE(2) for spinless fermions to EGUE(2) for fermions with spin to EGUE(2)-SU(4) implying that the differences in ensemble and spectral averages grow with increasing symmetry. Also for EGUE(2)-SU(4) there are, unlike for GUE, non-zero cross-correlations in energy centroids and spectral variances defined over spaces with different particle numbers and/or U(Ω) [equivalently SU(4)] irreps. In the dilute limit defined by Ω → ∞, r >> 1 and r/Ω → 0, for the {4 r , p} irreps, we have derived analytical

  18. Proceedings of the Workshop on Gulf Stream Structure and Variability Held at Research Triangle Park, North Carolina on 1-2 April 1982.

    Science.gov (United States)

    1982-04-01

    recently been re-discovered (Richardson, 1980). Franklin’s grand-nephew, Jonathan Williams (1793), applied his uncle’s ideas about thermometric naviga...spheres instead of aluminum tubes. This makes them lighter and easier to handle and permits us to profile to greater depths than before. The data are

  19. Three-Index Symmetric Matter Representations of SU(2) in F-Theory from Non-Tate Form Weierstrass Models

    CERN Document Server

    Klevers, Denis

    2016-01-01

    We give an explicit construction of a class of F-theory models with matter in the three-index symmetric (4) representation of SU(2). This matter is realized at codimension two loci in the F-theory base where the divisor carrying the gauge group is singular; the associated Weierstrass model does not have the form associated with a generic SU(2) Tate model. For 6D theories, the matter is localized at a triple point singularity of arithmetic genus g=3 in the curve supporting the SU(2) group. This is the first explicit realization of matter in F-theory in a representation corresponding to a genus contribution greater than one. The construction is realized by "unHiggsing" a model with a U(1) gauge factor under which there is matter with charge q=3. The resulting SU(2) models can be further unHiggsed to realize non-Abelian G_2xSU(2) models with more conventional matter content or SU(2)^3 models with trifundamental matter. The U(1) models used as the basis for this construction do not seem to have a Weierstrass real...

  20. Theory of weak interactions and related topics. Progress report, January 1-December 31, 1981

    International Nuclear Information System (INIS)

    Marshak, R.E.

    1985-08-01

    The research program demonstrated that the acceptance of B-L local symmetry as the weak hypercharge, whose spontaneous breakdown was connected to the spontaneous breakdown of parity, predicted a light electron neutrino (Majorana) and a related heavy neutrino. The prediction of neutron oscillations following from the PUT group SU(4)/sub C/ x SU(2)/sub L/ x SU(2)/sub R/ was scrutinized. A relation was derived between the mixing time for free neutron oscillations and the lifetime for nuclear stability with respect to ΔB = 2 transitions, and a study was conducted of the effect of time-varying or spatial-varying magnetic fields on the mixing time of neutron oscillations. Reasons are given for continuing work with the left-right symmetry (LRS) and partial unification theory (PUT) groups to their grand unification realization. It was shown that, without assuming a simple GUT group, that the color group has to be SU(3) and that the only possible GUT groups are SU(5) and SU(10). The gauge boson mass relation was derived for arbitrary Higgs structure associated either with the standard SU(2)/sub L/ x U(1) electroweak group or the LRS group. Also examined was the Pati-Salam type of grand unification. 31 refs

  1. Solutions of the classical SU(2) Yang-Mills theory in 2+1 dimensions with the Chern-Simons term: Ansatz building

    International Nuclear Information System (INIS)

    Teh, R.

    1989-07-01

    Here I would like to show a general way of writing the gauge potentials A μ α for which the SU(2) Yang-Mills equations of motion can be simplified and become solvable. A number of exact solutions can be obtained from these simplified equations of motion. (author). 14 refs

  2. Journal of Chemical Sciences | Indian Academy of Sciences

    Indian Academy of Sciences (India)

    Author Affiliations. Fang Dong1 Jiang Chenning1 Zhu Ting1 Yang Jinming1. Department of Pharmaceutical Engineering, School of Chemistry and Chemical Engineering, Yancheng Teachers University, 50 Kai Fang Da Dao, Yancheng 224002, Jiangsu, P. R. China ...

  3. Quantum deformed su(mvertical stroke n) algebra and superconformal algebra on quantum superspace

    International Nuclear Information System (INIS)

    Kobayashi, Tatsuo

    1993-01-01

    We study a deformed su(mvertical stroke n) algebra on a quantum superspace. Some interesting aspects of the deformed algebra are shown. As an application of the deformed algebra we construct a deformed superconformal algebra. From the deformed su(1vertical stroke 4) algebra, we derive deformed Lorentz, translation of Minkowski space, iso(2,2) and its supersymmetric algebras as closed subalgebras with consistent automorphisms. (orig.)

  4. Genotipificación de polimorfismos moleculares en los genes CYP2E1, GSTM1 y GSTT1 para evaluar susceptibilidad a Cáncer gastrointestinal en una población paisa

    Directory of Open Access Journals (Sweden)

    DL. Zuluaga

    2001-07-01

    Full Text Available Entre los años 2001 y 2002 se recogieron 40 muestras de pacientes diagnosticados con cáncergastrointestinal en los departamentos de Antioquia y Caldas, a los cuales se les determinó elgenotipo molecular para los genes CYP2E1, GSTM1 y GSTT1 en sangre y se les realizó una entre-vista para analizar su consumo de alcohol, cigarrillo y alimentos quemados y/o embutidos, ya queestudios previos en otras poblaciones han sugerido la asociación de algunos polimorfismos de estos genes (en combinación o no con factores ambientales, con una predisposición a la enfermedad. Por tanto, se comparó estadísticamente las frecuencias genotípicas con las de unapoblación de controles sanos apareada con los casos por edad y sexo, y se observó la suscep-tibilidad a cáncer gastrointestinal, mediante el análisis de asociación a polimorfismos en los genesque codifican para las enzimas CYP2E1, GSTM1 Y GSTT1 del metabolismo de xenobióticos.

  5. SU(N) multi-Skyrmions at finite volume

    Energy Technology Data Exchange (ETDEWEB)

    Canfora, Fabrizio [Centro de Estudios Cientificos (CECS), Casilla, Valdivia (Chile); Di Mauro, Marco; Naddeo, Adele [Universita di Salerno, Dipartimento di Fisica ' ' E.R. Caianiello' ' , Fisciano, SA (Italy); Kurkov, Maxim A. [Universita di Napoli Federico II, Dipartimento di Matematica e Applicazioni ' ' R. Caccioppoli' ' , Napoli (Italy)

    2015-09-15

    We study multi-soliton solutions of the fourdimensional SU(N) Skyrme model by combining the hedgehog ansatz for SU(N) based on the harmonic maps of S{sup 2} into CP{sup N-1} and a geometrical trick which allows to analyze explicitly finite-volume effects without breaking the relevant symmetries of the ansatz. The geometric set-up allows to introduce a parameter which is related to the ft Hooft coupling of a suitable large N limit, in which N → ∞ and the curvature of the background metric approaches zero, in such a way that their product is constant. The relevance of such a parameter to the physics of the system is pointed out. In particular, we discuss how the discrete symmetries of the configurations depend on it. (orig.)

  6. Torons, chiral symmetry breaking and U(1) problem in σ-model and in gauge theories. Part 1

    International Nuclear Information System (INIS)

    Zhitnitskij, A.R.

    1989-01-01

    A novel class of self-dual solutions in σ-models and in SU(2) gauge theories is considered. The solution is defined on manifold with boundary, it has topological charge Q=1/2. The contribution of the corresponding fluctuations and toron configurations to chiral condensate is calculated. This contribution has finite nonzero value. The APS (Atiyah, Patodi, Singer) theorem for a manifold with a boundary is discussed for the O(3) σ model. The necessity of imposing non-local boundary conditions for the Dirac operator is explained. 30 refs.; 4 figs

  7. Lifting scalar-quark and -lepton masses with sideways U(1)-II

    International Nuclear Information System (INIS)

    McCabe, J.F.; Wada, W.W.

    1984-01-01

    We investigate the phenomenological consequences of an SUSY model with a gauged O'Raifeartaigh sector on scalar partner masses. The model has the gauge symmetry SU(5) x U(1). We find that this form of spontaneous SUSY breaking leads to large scalar partner masses through one loop graphs without changing quark and lepton masses from tree values, and without breaking SU(5) symmetries by the scalar partner sector. To calculate the scalar partner masses we extend previous work on supergraph techniques to include cases when SUSY is broken at tree level. We are able to sum exactly the corrections to unbroken propagators with the aid of a supersymmetric version of tree-level Dyson equations. We show how the same ideas can be implemented in an SU(5) gauge model where the normal Higgs give large masses radiatively to the scalar-quarks and -leptons. 7 references

  8. suPAR

    DEFF Research Database (Denmark)

    Hodges, Gethin W; Bang, Casper N; Wachtell, Kristian

    2015-01-01

    The fundamental role of inflammation in cardiovascular disease (CVD) has prompted interest in numerous biomarkers that detect subclinical levels of inflammation. Soluble urokinase plasminogen activator receptor (suPAR) is a novel biomarker that correlates significantly with cardiovascular events ...... comprehensive review of suPAR in CVD and explore its function and usefulness in predicting cardiovascular events....

  9. Bordieu y su consideración social del lenguaje

    Directory of Open Access Journals (Sweden)

    VERÓNICA MUÑOZ DARDE

    1987-01-01

    Full Text Available Artículo que examina el análisis del lenguaje que hace Pierre Bourdieu, centrándose en tres aspectos: (1 su análisis filosófico de la lengua, referente al estructuralismo lingüístico y al estructuralismo en general; (2 su Sociología de la Lengua, como ejemplo se trata la economía de sistemas simbólicos; y (3 un análisis de la propia lengua de Bourdieu. Se muestra tambien cómo las escrituras de Bourdieu están lejos de ser accesibles; se dirigen hacia una restringida élite cultural.

  10. SU(6), baryonic decays of B-mesons and CP

    International Nuclear Information System (INIS)

    Wu, D.

    1990-01-01

    In this paper the four fermion weak decay Hamiltonian is expressed in terms of quark-antiquark creation operators with specific spin orientations. Then the SU(6) symmetry of the strong interactions among light quarks is imposed to find 8 invariant decay amplitudes for two body charmful baryonic decays of the B-mesons, 3 S-waves, 4 P- waves and 1 D-wave. Λ c branching ratio and some exclusive branching ratios are calculated based on the assumption of two body dominance in baryonic decay modes. Results on two body mesonic decays are also given. Relation between the SU(6) scheme and the quark diagram scheme is discussed

  11. Analiza kvalitete procesa sušenja u klasičnim komornim sušionicama

    OpenAIRE

    Sedlar, Tomislav; Pervan, Stjepan

    2010-01-01

    U radu su dani rezultati ispitivanja kvalitete sušenja u klasičnoj komornoj sušionici. Ispitivanje se temelji na novoj metodologiji kojom se prikazuje razina uspješnosti procesa sušenja na temelju analize kvalitete tog procesa u klasičnoj komornoj sušionici, korištenjem znanstveno unaprijeđene verzije liste provjere u svakodnevnoj praktičnoj primjeni. Za verificiranje nove metodologije ispitivanja izabrano je poduzeće koje se specijaliziralo za izradu lamel parketa i klasičnog parketa. U s...

  12. Neutral current in reduced minimal 3-3-1 model

    International Nuclear Information System (INIS)

    Vu Thi Ngoc Huyen; Hoang Ngoc Long; Tran Thanh Lam; Vo Quoc Phong

    2014-01-01

    This work is devoted for gauge boson sector of the recently proposed model based on SU(3) C ⊗SU(3) L ⊗ U(1) X group with minimal content of leptons and Higgs. The limits on the masses of the bilepton gauge bosons and on the mixing angle among the neutral ones are deduced. Using the Fritzsch anzats on quark mixing, we show that the third family of quarks should be different from the first two. We obtain a lower bound on mass of the new heavy neutral gauge boson as 4.032 TeV. Using data on branching decay rates of the Z boson, we can fix the limit to the Z and Z' mixing angle φ as - 0.001 ≤ φ ≤ 0.0003. (author)

  13. Complicaciones de la diabetes y su asociación con el estrés oxidativo: un viaje hacia el daño endotelial

    Directory of Open Access Journals (Sweden)

    Marcelo A. Storino

    2014-11-01

    Los fármacos que modulan la vía de la incretina (GLP-1 y los inhibidores de la DPP-4 se caracterizan por la baja incidencia de su efecto hipoglucemiante, fenómeno que aumenta su seguridad. Estudios recientes con GLP-1 demuestran su capacidad para revertir el estrés oxidativo producido por la hiperglucemia, la hipoglucemia y la transición de esta última y la primera.

  14. Minimal Regge model for meson--baryon scattering: duality, SU(3) and phase-modified absorptive cuts

    International Nuclear Information System (INIS)

    Egli, S.E.

    1975-10-01

    A model is presented which incorporates economically all of the modifications to simple SU(3)-symmetric dual Regge pole theory which are required by existing data on 0 -1 / 2 + → -1 / 2 + processes. The basic assumptions are no-exotics duality, minimally broken SU(3) symmetry, and absorptive Regge cuts phase-modified by the Ringland prescription. First it is described qualitatively how these assumptions suffice for the description of all measured reactions, and then the results of a detailed fit to 1987 data points are presented for 18 different reactions. (auth)

  15. Removal of focal segmental glomerulosclerosis (FSGS) factor suPAR using CytoSorb.

    Science.gov (United States)

    Schenk, Heiko; Müller-Deile, Janina; Schmitt, Roland; Bräsen, Jan Hinrich; Haller, Hermann; Schiffer, Mario

    2017-12-01

    Treatment of primary focal segmental glomerulosclerosis (FSGS) and its recurrence after kidney transplantation associated with rapid deterioration of kidney function remains to be challenging despite advances in immunosuppressive therapy. The presence of circulating factors has been postulated to be a pivotal player in the pathogenesis of FSGS, although suPAR and CLCF-1 have been identified as the most promising causative factors. The potential therapeutic effect of suPAR elimination in an FSGS patient using CytoSorb, a hemoadsorption device that gained attention in the cytokine elimination in septic patients, was studied. Efficiency of total plasma exchange to remove suPAR was determined. CytoSorb hemoadsorption caused a 27.33% reduction of the suPAR level in a single treatment, whereas total plasma exchange showed a suPAR level reduction of 25.12% (n = 3; 95% confidence interval, 0.2777-0.8090; P < 0.01), which may indicate therapeutic potential in the treatment of primary FSGS and its recurrence in a kidney transplant. © 2017 Wiley Periodicals, Inc.

  16. VIGILANCIA DE LA PANDEMIA DE GRIPE (H1N1 2009 EN ESPAÑA

    Directory of Open Access Journals (Sweden)

    Amparo Larrauri Cámara

    2010-01-01

    Full Text Available Fundamento: España experimentó una circulación del nuevo virus de la gripe (H1N12009 durante el verano de 2009, que evolucionó de forma creciente hasta la presentación a principios del otoño de la primera onda pandémica por dicho virus. Los objetivos de este trabajo son describir la evolución de esta onda pandémica en nuestro país y evaluar su impacto en la morbilidad y mortalidad de la población española. Método: A partir de la información proporcionada por el Sistema de Vigilancia de la Gripe en España y el Centro de Coordinación de Alertas y Emergencias del Ministerio de Sanidad y Política Social se han estimado una serie de indicadores epidemiológicos y virológicos para evaluar el nivel de actividad e intensidad de la onda pandémica, así como su gravedad. Resultados: La onda pandémica por el virus (H1N12009 se inició a comienzos del otoño de 2009 y registró valores máximos de incidencia de gripe de 372,15 casos semanales/100.000 habitantes. Las mayores tasas de incidencia de gripe se observaron en los menores de 15 años. La tasa de detección viral en el periodo pandémico se mantuvo en el rango de las registradas previamente (46,4%. Se estimó una tasa de letalidad global de 0,43 defunciones por 1.000 casos de gripe pandémica. Un 64% de las defunciones por gripe pandémica se registraron en adultos jóvenes, con máximas tasas de mortalidad en el grupo de 45-64 años (9,35 defunciones/1.000.000 habitantes. La mortalidad asociada a gripe estacional en el periodo 2001- 2008 fue máxima en los mayores de 64 años (95% del total de defunciones. Conclusiones: La onda pandémica por el virus de la gripe (H1N12009 tuvo una presentación precoz en España y una intensidad media en comparación con las trece ondas estacionales previas de gripe. Esta primera onda también se caracterizó por un carácter leve, teniendo en cuenta tasas de letalidad o mortalidad, si bien un elevado porcentaje de las defunciones confirmadas

  17. Expresión de β-1,3-Glucanasas de Beauveria bassiana en cultivo con extracto de los fitopatógenos Peronospora variabilis y Fusarium oxysporum

    OpenAIRE

    Montoya Espinoza, W. Jhoel; Nolasco Cárdenas, Oscar P; Acuña Payano, Rosalyn K; Gutiérrez, Ana I. F

    2016-01-01

    El hongo Beauveria bassiana Vuill. es muy conocido por su capacidad entomopatógena, pero también existe referencias de ser un hongo antagonista, una de las posibles formas de su antagonismo es la antibiosis debido a la presencia de enzimas hidrolíticas en su genoma. Las principales enzimas expresadas contra fitopatógenos son las β-1,3-glucanasas, ya que la pared celular de los fitopatógenos como hongos y oomycetes está constituida en su mayoría por polímeros de β-1,3-glucanos. Se evaluó por q...

  18. Heterotic and type II orientifold compactifications on SU(3) structure manifolds

    International Nuclear Information System (INIS)

    Benmachiche, I.

    2006-07-01

    We study the four-dimensional N=1 effective theories of generic SU(3) structure compactifications in the presence of background fluxes. For heterotic and type IIA/B orientifold theories, the N=1 characteristic data are determined by a Kaluza-Klein reduction of the fermionic actions. The Kaehler potentials, superpotentials and the D-terms are entirely encoded by geometrical data of the internal manifold. The background flux and the intrinsic torsion of the SU(3) structure manifold, gives rise to contributions to the four-dimensional F-terms. The corresponding superpotentials generalize the Gukov-Vafa-Witten superpotential. For the heterotic compactification, the four-dimensional fermionic supersymmetry variations, as well as the conditions on supersymmetric vacua, are determined. The Yukawa couplings of the theory turn out to be similar to their Calabi-Yau counterparts. (Orig.)

  19. Expression of YY1 correlates with progression and metastasis in esophageal squamous cell carcinomas

    Directory of Open Access Journals (Sweden)

    Luo J

    2014-09-01

    Full Text Available Judong Luo,1,* Xin Jiang,1,* LiLi Cao,2,* Kejun Dai,1 Shuyu Zhang,3,4 Xin Ge,3,4 Xifa Zhou,1 Xujing Lu1 1Department of Radiotherapy, Changzhou Tumor Hospital, Soochow University, Changzhou, People's Republic of China; 2Department of Molecular Radiobiology, Research Institute for Radiation Biology and Medicine, Hiroshima University, Hiroshima, Japan; 3School of Radiation Medicine and Protection and Jiangsu Provincial Key Laboratory of Radiation Medicine and Protection, 4Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions and School for Radiological and Interdisciplinary Sciences (RAD-X, Soochow University, Suzhou, People's Republic of China  *These authors contributed equally to this work Objective: Esophageal squamous cell carcinoma (ESCC is one of the deadliest cancers worldwide. Yin Yang 1 (YY1 is a ubiquitous and multifunctional zinc-finger transcription factor that plays important biological functions in cell homeostasis and tumorigenesis. The purpose of this study was to investigate the expression of YY1 in different ESCC tissues and the potential relationship with clinicopathological features. Methods: One hundred and four ESCC tissues were collected in this study. The protein levels of YY1 were measured by immunohistochemistry. TE-1 cell invasion in vitro was assessed using the Transwell assay. Results: There were no obvious differences between expression levels in patients over age 64 and those younger than 64, and no noticeable distinction was observed between males and females. However, the YY1 protein level was significantly higher in ESCC tissues with lymph node metastasis than those without lymph node metastasis (P=0.042. Furthermore, the expression of the YY1 protein was stronger in stage III–IV patients than in stage I–II patients (P=0.002, but the protein levels between different histological grades (well, moderate, or poor showed no statistical significance. Similarly, there was no

  20. Aproximación al análisis de "memento" (2000, Christopher Nolan)

    OpenAIRE

    Castro Guillén, Sissou

    2017-01-01

    El thriller psicológico y neo-noir que aparece en Memento dirigido y escrito por Christopher Nolan en el año 2000, fue inspirado por la novela corta Memento Mori (en latín "Recuerda que vas a morir") de su hermano Jonathan Nolan. Christopher es ahora conocido por sus thrillers psicológicos y a menudo por usar líneas temporales no lineales. Grado en Publicidad y Relaciones Públicas

  1. Bloque 1. Temas 1 y 2. Contenidos, evolución epistemológica y fuentes de la Geografía Rural

    OpenAIRE

    Segrelles, José Antonio

    2011-01-01

    Los temas 1 y 2 se incluyen en el bloque 1 y se dedican al análisis de la evolución epistemológica de la geografía rural y a las fuentes para el estudio de esta disciplina, respetivamente. Dentro de la evolución epistemológica se presta especial atención al concepto de geografía rural, a las diversas interpretaciones que éste ha tenido, a la diferente forma en que la geografía rural ha sido estudiada por los diferentes enfoques que ha jalonado su desarrollo científico en el marco de la evoluc...

  2. Special Issue: 15 Years of SU8 as MEMS Material

    Directory of Open Access Journals (Sweden)

    Arnaud Bertsch

    2015-06-01

    Full Text Available In 1997, the first paper using SU-8 as a material for microfabrication was published [1], demonstrating the interest of this negative photoresist for the near-UV structuration of thick layers and the manufacturing of high aspect-ratio components.[...

  3. Factores de riesgo de hospitalización por gripe (H1N1 2009 y efectividad de intervenciones farmacológicas y no farmacológicas en su prevención. Estudio de casos y controles

    Directory of Open Access Journals (Sweden)

    Angela Domínguez

    2011-01-01

    Full Text Available Entre las medidas farmacológicas de posible utilidad para limitar el impacto de las pandemias gripales en la comunidad están los fármacos antivirales (inhibidores de la neuraminidasa y las vacunas antigripales y antineumocócicas, ya que la gripe predispone a la neumonía bacteriana por StrVptoUoUUus pnVumonWTV. Entre las medidas no farmacológicas destacan la higiene de manos y la higiene respiratoria. La falta de conocimiento de la efectividad de dichas medidas en situación de pandemia justifica que en septiembre de 2009, ante la solicitud de proyectos de investigación por parte del Ministerio de Ciencia e Innovación en su Programa de Investigación sobre la gripe (H1N1 2009 en España, el CIBER de Epidemiología y Salud Pública presentara un proyecto multicéntrico de casos y controles emparejados por edad, hospital y fecha de hospitalización para investigar sobre estos aspectos en 37 hospitales de 7 comunidades autónomas. Por cada caso hospitalizado confirmado de gripe pandémica se seleccionaba 1 caso confirmado ambulatorio y 3 controles (2 hospitalarios y 1 ambulatorio. En los casos y en los controles se recogían variables demográficas, condiciones médicas subyacentes, utilización de antivirales, vacunas recibidas y hábitos de higiene. En los casos hospitalizados se recogieron, además, información relativa al tratamiento antiviral y evolución de la enfermedad. Hasta octubre 2010 se habían reclutado un total de 3.750 pacientes y se está realizando la depuración de los datos y la recuperación de variables. La implicación de las Direcciones Generales de Salud Pública ha sido fundamental para la adecuación del proyecto a la evolución de la pandemia.

  4. desde su cultura

    Directory of Open Access Journals (Sweden)

    Luz Ángela Argote O.

    2008-01-01

    Full Text Available Para explorar las prácticas sobre protección y cuidado durante la transición del climaterio a la menopausia se llevó a cabo un estudio en mujeres colombianas afrodescendientes que viven en el Distrito de Aguablanca, Cali, Colombia, a fin de evaluar los factores socioculturales que influyen en su cuidado. Se siguió la etnoenfermería con el objeto de averiguar la perspectiva femenina étnica, e identificar las prácticas beneficiosas y de riesgo para su salud. La investigación tuvo como participantes claves a 17 mujeres. En la consolidación de la muestra se aplicaron los criterios de saturación de datos. En los resultados se evidenció la relación de las mujeres con su propio cuerpo, su defensa y fortificación desde la menarquia como fase preparatoria de sus funciones reproductivas, hasta cuando aparece la menopausia. De acuerdo con su cultura, si no tienen en cuenta estas prácticas tradicionales, sufrirán diversas dolencias en la etapa final de su periodo de procreación. Los cuidados sobresalientes se relacionan con el significado de la sangre, así como con el ejercicio de la sexualidad, la limpieza, la alimentación especial y el equilibrio que se debe guardar entre el calor y el frío. Las entrevistadas atribuyen a la menopausia cambios en su cuerpo, en sus diferencias emocionales de conducta y en las expectativas de la sexualidad. Para el presente estudio estos hallazgos se agruparon en tres temas principales: sentir los profundos cambios en la vida: el cuerpo; sentir los cambios en los estados de ánimo; y vivir la sexualidad.

  5. Topological charge and cooling scales in pure SU(2) lattice gauge theory

    OpenAIRE

    Berg, Bernd A.; Clarke, David A.

    2018-01-01

    Using Monte Carlo simulations with overrelaxation, we have equilibrated lattices up to β=2.928, size 604, for pure SU(2) lattice gauge theory with the Wilson action. We calculate topological charges with the standard cooling method and find that they become more reliable with increasing β values and lattice sizes. Continuum limit estimates of the topological susceptibility χ are obtained of which we favor χ1/4/Tc=0.643(12), where Tc is the SU(2) deconfinement temperature. Differences between ...

  6. Involvement of spinal glutamate transporter-1 in the development of mechanical allodynia and hyperalgesia associated with type 2 diabetes

    Directory of Open Access Journals (Sweden)

    Shi J

    2016-11-01

    Full Text Available Jinshan Shi,1,* Ke Jiang,2,* Zhaoduan Li,3 1Department of Anesthesiology, Guizhou Provincial People’s Hospital, 2Department of Anesthesiology, The Affiliated Hospital of Guizhou Medical University, Guiyang, 3Department of Anesthesiology, Tianjin Nankai Hospital, Tianjin, People’s Republic of China *These authors contributed equally to this work Abstract: Little is known about the effects of the development of type 2 diabetes on glutamate homeostasis in the spinal cord. Therefore, we quantified the extracellular levels of glutamate in the spinal cord of Zucker diabetic fatty (ZDF rats using in vivo microdialysis. In addition, protein levels of glutamate transporter-1 (GLT-1 in the spinal cord of ZDF rats were measured using Western blot. Finally, the effects of repeated intrathecal injections of ceftriaxone, which was previously shown to enhance GLT-1 expression, on the development of mechanical allodynia and hyperalgesia as well as on basal extracellular level of glutamate and the expression of GLT-1 in the spinal cord of ZDF rats were evaluated. It was found that ZDF rats developed mechanical hyperalgesia and allodynia, which were associated with increased basal extracellular levels of glutamate and attenuated levels of GLT-1 expression in the spinal cord, particularly in the dorsal horn. Furthermore, repeated intrathecal administrations of ceftriaxone dose-dependently prevented the development of mechanical hyperalgesia and allodynia in ZDF rats, which were correlated with enhanced GLT-1 expression without altering the basal glutamate levels in the spinal cord of ZDF rats. Overall, the results suggested that impaired glutamate reuptake in the spinal cord may contribute to the development of neuropathic pains in type 2 diabetes. Keywords: diabetes, peripheral neuropathy, spinal cord, Zucker diabetic fatty rats, glutamate, glutamate transporter-1

  7. Mixing angles in SU(2)/sub L/ x U(1) gauge model

    International Nuclear Information System (INIS)

    Nandi, S.; Tanaka, K.

    1979-01-01

    Exact expressions for the mixing parameters are obtained in terms of mass ratios in the standard Weinberg-Salam model with permutation symmetry S 3 for six quarks. The CP-violating phase is ignored, and there are no arbitrary parameters except for the quark masses. In the lowest order, the angles defined by Kobayashi-Maskawa are sin theta/sub 1/ = sin theta/sub c/ = (m/sub d//m/sub d/ + m/sub s/)/sup 1/2/, sin theta 3 = -sin theta/sub 3/ = -m 2 /sub s//m 2 /sub b/, and m/sub t/m/sub s/ greater than or equal to m/sub c/m/sub b/ = 7.2 GeV 2 or m/sub t/ greater than or equal to 24 GeV for m/sub s/ = 0.3 GeV

  8. Dicty_cDB: Contig-U16597-1 [Dicty_cDB

    Lifescience Database Archive (English)

    Full Text Available . 105 5e-21 ( P12945 ) RecName: Full=N-terminal acetyltransferase A complex su... 102 4e-20 AJ277477_1( AJ27...32 9.6 25 ( BH159179 ) ENTTR11TF Entamoeba histolytica Sheared DNA Entam... 40 9.6 2 ( EJ436524 ) 1093015283960 Global-Ocean-Sampli...018409749 Global-Ocean-Sampling_GS-36-01-01-2... 42 0.15 3 ( CR457462 ) Zebrafish... DNA sequence from clone CH211-1O7 in li... 48 0.15 9 ( EJ718016 ) 1092959434813 Global-Ocean-Sampling_GS-30...smodium falciparum 3D7 chromosome 14 section 1... 32 0.18 14 ( EJ782622 ) 1093017288691 Global-Ocean-Samplin

  9. Flipped and unflipped SU(5) as type IIA flux vacua

    Energy Technology Data Exchange (ETDEWEB)

    Chen Chingming [George P. and Cynthia W. Mitchell Institute for Fundamental Physics, Texas A and M University, College Station, TX 77843 (United States); Li Tianjun [Department of Physics and Astronomy, Rutgers University, Piscataway, NJ 08854 (United States) and Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing 100080 (China)]. E-mail: tjli@physics.rutgers.edu; Nanopoulos, Dimitri V. [George P. and Cynthia W. Mitchell Institute for Fundamental Physics, Texas A and M University, College Station, TX 77843 (United States); Astroparticle Physics Group, Houston Advanced Research Center (HARC), Mitchell Campus, Woodlands, TX 77381 (United States); Academy of Athens, Division of Natural Sciences, 28 Panepistimiou Avenue, Athens 10679 (Greece)

    2006-09-04

    On type IIA orientifolds with flux compactifications in supersymmetric AdS vacua, we for the first time construct SU(5) models with three anti-symmetric 10 representations and without symmetric 15 representations. We show that all the pairs of the anti-fundamental 5-bar and fundamental 5 representations can obtain GUT/string-scale vector-like masses after the additional gauge symmetry breaking via supersymmetry preserving Higgs mechanism. Then we have exact three 5-bar , and no other chiral exotic particles that are charged under SU(5) due to the non-Abelian anomaly free condition. Moreover, we can break the SU(5) gauge symmetry down to the SM gauge symmetry via D6-brane splitting, and solve the doublet-triplet splitting problem. Assuming that the extra one (or several) pair(s) of Higgs doublets and adjoint particles obtain GUT/string-scale masses via high-dimensional operators, we only have the MSSM in the observable sector below the GUT scale. Then the observed low energy gauge couplings can be generated via RGE running if we choose the suitable grand unified gauge coupling by adjusting the string scale. Furthermore, we construct the first flipped SU(5) model with exact three 10, and the first flipped SU(5) model in which all the Yukawa couplings are allowed by the global U(1) symmetries.

  10. CH{sub 4} dehydrogenation on Cu(1 1 1), Cu@Cu(1 1 1), Rh@Cu(1 1 1) and RhCu(1 1 1) surfaces: A comparison studies of catalytic activity

    Energy Technology Data Exchange (ETDEWEB)

    Zhang, Riguang; Duan, Tian [Key Laboratory of Coal Science and Technology of Ministry of Education and Shanxi Province, Taiyuan University of Technology, Taiyuan 030024, Shanxi (China); Ling, Lixia [Key Laboratory of Coal Science and Technology of Ministry of Education and Shanxi Province, Taiyuan University of Technology, Taiyuan 030024, Shanxi (China); Research Institute of Special Chemicals, Taiyuan University of Technology, Taiyuan 030024, Shanxi (China); Wang, Baojun, E-mail: wangbaojun@tyut.edu.cn [Key Laboratory of Coal Science and Technology of Ministry of Education and Shanxi Province, Taiyuan University of Technology, Taiyuan 030024, Shanxi (China)

    2015-06-30

    Highlights: • Adsorbed Rh atom on Cu catalyst exhibits better catalytic activity for CH{sub 4} dehydrogenation. • The adsorbed Rh atom is the reaction active center for CH{sub 4} dehydrogenation. • The morphology of Cu substrate has negligible effect on CH{sub 4} dehydrogenation. - Abstract: In the CVD growth of graphene, the reaction barriers of the dehydrogenation for hydrocarbon molecules directly decide the graphene CVD growth temperature. In this study, density functional theory method has been employed to comparatively probe into CH{sub 4} dehydrogenation on four types of Cu(1 1 1) surface, including the flat Cu(1 1 1) surface (labeled as Cu(1 1 1)) and the Cu(1 1 1) surface with one surface Cu atom substituted by one Rh atom (labeled as RhCu(1 1 1)), as well as the Cu(1 1 1) surface with one Cu or Rh adatom (labeled as Cu@Cu(1 1 1) and Rh@Cu(1 1 1), respectively). Our results show that the highest barrier of the whole CH{sub 4} dehydrogenation process is remarkably reduced from 448.7 and 418.4 kJ mol{sup −1} on the flat Cu(1 1 1) and Cu@Cu(1 1 1) surfaces to 258.9 kJ mol{sup −1} on RhCu(1 1 1) surface, and to 180.0 kJ mol{sup −1} on Rh@Cu(1 1 1) surface, indicating that the adsorbed or substituted Rh atom on Cu catalyst can exhibit better catalytic activity for CH{sub 4} complete dehydrogenation; meanwhile, since the differences for the highest barrier between Cu@Cu(1 1 1) and Cu(1 1 1) surfaces are smaller, the catalytic behaviors of Cu@Cu(1 1 1) surface are very close to the flat Cu(1 1 1) surface, suggesting that the morphology of Cu substrate does not obviously affect the dehydrogenation of CH{sub 4}, which accords with the reported experimental observations. As a result, the adsorbed or substituted Rh atom on Cu catalyst exhibit a better catalytic activity for CH{sub 4} dehydrogenation compared to the pure Cu catalyst, especially on Rh-adsorbed Cu catalyst, we can conclude that the potential of synthesizing high-quality graphene with the

  11. Covalent heme attachment to the protein in human heme oxygenase-1 with selenocysteine replacing the His25 proximal iron ligand.

    Science.gov (United States)

    Jiang, Yongying; Trnka, Michael J; Medzihradszky, Katalin F; Ouellet, Hugues; Wang, Yongqiang; Ortiz de Montellano, Paul R

    2009-03-01

    To characterize heme oxygenase with a selenocysteine (SeCys) as the proximal iron ligand, we have expressed truncated human heme oxygenase-1 (hHO-1) His25Cys, in which Cys-25 is the only cysteine, in the Escherichia coli cysteine auxotroph strain BL21(DE3)cys. Selenocysteine incorporation into the protein was demonstrated by both intact protein mass measurement and mass spectrometric identification of the selenocysteine-containing tryptic peptide. One selenocysteine was incorporated into approximately 95% of the expressed protein. Formation of an adduct with Ellman's reagent (DTNB) indicated that the selenocysteine in the expressed protein was in the reduced state. The heme-His25SeCys hHO-1 complex could be prepared by either (a) supplementing the overexpression medium with heme, or (b) reconstituting the purified apoprotein with heme. Under reducing conditions in the presence of imidazole, a covalent bond is formed by addition of the selenocysteine residue to one of the heme vinyl groups. No covalent bond is formed when the heme is replaced by mesoheme, in which the vinyls are replaced by ethyl groups. These results, together with our earlier demonstration that external selenolate ligands can transfer an electron to the iron [Y. Jiang, P.R. Ortiz de Montellano, Inorg. Chem. 47 (2008) 3480-3482 ], indicate that a selenyl radical is formed in the hHO-1 His25SeCys mutant that adds to a heme vinyl group.

  12. Validation of MCNP6.1 for Criticality Safety of Pu-Metal, -Solution, and -Oxide Systems

    Energy Technology Data Exchange (ETDEWEB)

    Kiedrowski, Brian C. [Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Conlin, Jeremy Lloyd [Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Favorite, Jeffrey A. [Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Kahler, III, Albert C. [Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Kersting, Alyssa R. [Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Parsons, Donald K. [Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Walker, Jessie L. [Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

    2014-05-13

    Guidance is offered to the Los Alamos National Laboratory Nuclear Criticality Safety division towards developing an Upper Subcritical Limit (USL) for MCNP6.1 calculations with ENDF/B-VII.1 nuclear data for three classes of problems: Pu-metal, -solution, and -oxide systems. A benchmark suite containing 1,086 benchmarks is prepared, and a sensitivity/uncertainty (S/U) method with a generalized linear least squares (GLLS) data adjustment is used to reject outliers, bringing the total to 959 usable benchmarks. For each class of problem, S/U methods are used to select relevant experimental benchmarks, and the calculational margin is computed using extreme value theory. A portion of the margin of sub criticality is defined considering both a detection limit for errors in codes and data and uncertainty/variability in the nuclear data library. The latter employs S/U methods with a GLLS data adjustment to find representative nuclear data covariances constrained by integral experiments, which are then used to compute uncertainties in keff from nuclear data. The USLs for the classes of problems are as follows: Pu metal, 0.980; Pu solutions, 0.973; dry Pu oxides, 0.978; dilute Pu oxide-water mixes, 0.970; and intermediate-spectrum Pu oxide-water mixes, 0.953.

  13. Electroweak radiative corrections in the SU(2) x U(1) standard model

    International Nuclear Information System (INIS)

    Hollik, W.

    1986-01-01

    This paper contains a discussion of the 1-loop renormalization of the standard model and applications of the radiative corrections to fermion processes. Thereby we restrict the discussion to leptonic processes since these allow the cleanest access to the more subtle parts of the theory avoiding theoretical uncertainties as far as possible. Actual measurements of the W +- ,Z masses and of sin 2 θ W already indicate the presence of higher order effects in electroweak processes between fermions. More accurate measurements in the near future colliders LEP and SLC will allow to test the standard model beyond the tree level. At the 1-loop level a big amount of work has already been done with a satisfactory agreement between the individual calculations for the standard processes: μ decays, ν-scattering, and e + e → μ + μ - . 38 refs

  14. 1-- and 0++ heavy four-quark and molecule states in QCD

    International Nuclear Information System (INIS)

    Albuquerque, R.M.; Fanomezana, F.; Narison, S.; Rabemananjara, A.

    2012-01-01

    We estimate the masses of the 1 -- heavy four-quark and molecule states by combining exponential Laplace (LSR) and finite energy (FESR) sum rules known perturbatively to lowest order (LO) in α s but including non-perturbative terms up to the complete dimension-six condensate contributions. This approach allows to fix more precisely the value of the QCD continuum threshold (often taken ad hoc) at which the optimal result is extracted. We use double ratio of sum rules (DRSR) for determining the SU(3) breakings terms. We also study the effects of the heavy quark mass definitions on these LO results. The SU(3) mass-splittings of about (50-110) MeV and the ones of about (250-300) MeV between the lowest ground states and their 1st radial excitations are (almost) heavy-flavor independent. The mass predictions summarized in Table 4 are compared with the ones in the literature (when available) and with the three Y c (4260,4360,4660) and Y b (10890)1 -- experimental candidates. We conclude (to this order approximation) that the lowest observed state cannot be a pure1 -- four-quark nor a pure molecule but may result from their mixings. We extend the above analyzes to the 0 ++ four-quark and molecule states which are about (0.5-1) GeV heavier than the corresponding 1 -- states, while the splittings between the 0 ++ lowest ground state and the 1st radial excitation is about (300-500) MeV. We complete the analysis by estimating the decay constants of the 1 -- and 0 ++ four-quark states which are tiny and which exhibit a 1/M Q behavior. Our predictions can be further tested using some alternative non-perturbative approaches or/and at LHC b and some other hadron factories.

  15. Non-Abelian vortices in N=1* gauge theory

    International Nuclear Information System (INIS)

    Markov, V.; Marshakov, A.; Yung, A.

    2005-01-01

    We consider the N=1* supersymmetric SU(2) gauge theory and demonstrate that the Z2 vortices in this theory acquire orientational zero modes, associated with the rotation of magnetic flux inside SU(2) group, and turn into the non-Abelian strings, when the masses of all chiral fields become equal. These non-Abelian strings are not BPS-saturated. We study the effective theory on the string world sheet and show that it is given by two-dimensional non-supersymmetric O(3) sigma model. The confined 't Hooft-Polyakov monopole is seen as a junction of the Z2-string and anti-string, and as a kink in the effective world sheet sigma model. We calculate its mass and show that besides the four-dimensional confinement of monopoles, they are also confined in the two-dimensional theory: the monopoles stick to anti-monopoles to form the meson-like configurations on the strings they are attached to

  16. Duality relations between SU(N)k and SU(k)NWZW models and their braid matrices

    International Nuclear Information System (INIS)

    Naculich, S.G.; Schnitzer, H.J.

    1990-01-01

    Dual relations are found between the primary fields, correlators, and conformal blocks of SU(N) k and SU(k) N WZW models, which in turn imply dual relations between the braid matrices of the two theories. These results are a consequence of the fact that the spaces of conformal blocks of SU(N) k and SU(k) N correlation functions are dual. (orig.)

  17. Ameaça e controle da gripe A(H1N1: uma análise discursiva de Veja, IstoÉ e Época Threat and control of influenza A (H1N1: a discursive analysis of Brazilian magazines Veja, IstoÉ and Época

    Directory of Open Access Journals (Sweden)

    Isaltina Maria de Azevedo Mello Gomes

    2012-06-01

    Full Text Available Em 2009, o aparecimento de casos da gripe A(H1N1 - a chamada gripe suína - em 207 países indicou o registro da primeira pandemia do século XXI, como já previam os informes dos órgãos sanitários há alguns anos. No Brasil, foram confirmados 27.850 casos de suína, dos quais 1.632 evoluíram a óbito, representando 18,6% das mortes mundiais e 27,7% no continente americano, segundo dados do Ministério da Saúde (2009. Os meios de comunicação brasileiros bem como os de outros países vincularam o surgimento da gripe suína como uma "reedição" diferenciada da gripe espanhola, devido à identificação de um novo subtipo de vírus da gripe que podia ser tão letal quanto a antiga. Um temor semelhante havia sido vivenciado também com a gripe aviária, em 1997, que levou autoridades a permanecerem em estado de alerta. Este artigo tem por objetivo avaliar a produção das notícias sobre a gripe A(H1N1 nas três principais revistas de circulação nacional do Brasil. Para tanto, escolhemos as oito capas de Veja, IstoÉ e Época em que a doença foi destaque nos primeiros meses da pandemia, em 2009. Tomando como base noções ligadas à Análise do Discurso e às Teorias do Jornalismo, as análises indicam que o noticiário se divide em duas fases, enfatizando, inicialmente, o alarme provocado pelo medo diante do novo vírus e das mortes registradas e, em seguida, o controle pela constatação de que a moléstia representava menos risco do que se imaginava, além das ações para combatê-la.In 2009, the emergence of cases of influenza A(H1N1 - the popular flu - in 207 countries indicated the registration of the first pandemic of the XXI century, as predicted in reports from health authorities some years ago. In Brazil, 27,850 cases of swine were confirmed, of which 1,632 died, representing 18,6% of deaths worldwide and 27,7% in the Americas, according to the Health Ministry of Brazil (2009. The media have linked the emergence of flu as a

  18. Fast Multiscale Algorithms for Wave Propagation in Heterogeneous Environments

    Science.gov (United States)

    2016-01-07

    Leslie Greengard, Thomas Hagstrom, Shidong Jiang . Extension of the Lorenz–Mie– Debye method forelectromagnetic scattering to the time-domain, Journal of...Φ ∂z +ΣΦ = 0, where Φ is a vector of length m(p+1) for a boundary condition order of p and a hyperbolic system with m independent variables. Here...exterior of a sphere. J. Comput. Phys., 274:191–207, 2014. [19] L. Greengard, T. Hagstrom, and S. Jiang. Extension of the Lorenz-Mie- Debye method for

  19. Research in theoretical nuclear physics: Progress report, March 1, 1986--February 28, 1989

    International Nuclear Information System (INIS)

    Robson, D.

    1989-01-01

    Our investigations over the last three years have involved two major areas of endeavor. The first area is Hamiltonian Lattice Gauge Theory which involved a collaborative effort between the Florida State Group (Chris Long and Don Robson) and S.A. Chin (Texas A and M). The second area is models of hadrons and hadronic interactions based on quarks, pions and the basic QCD symmetries, i.e., chiral symmetry and local SU(3) color gauge invariance. These three years have been very productive as evidenced by the twelve papers (A1 → A12) published (or in press) as well as the various invited papers (B1 → B5) given by the Principal Investigator at several meetings. In what follows we report on the results obtained in lattice gauge calculations using SU(N) gauge groups and on results obtained with hadronic models

  20. Temperature dependence of shear viscosity of SU(3)-gluodynamics within lattice simulation

    Energy Technology Data Exchange (ETDEWEB)

    Astrakhantsev, N.Yu. [Institute for Theoretical and Experimental Physics,25 B. Cheremushkinskaya St., 117218, Moscow (Russian Federation); Moscow Institute of Physics and Technology,9 Institutskii per., 141700, Dolgoprudny (Russian Federation); Braguta, V.V. [Institute for Theoretical and Experimental Physics,25 B. Cheremushkinskaya St., 117218, Moscow (Russian Federation); Institute for High Energy Physics NRC “Kurchatov Institute”,1 Pobedy St., Protvino, 142281 (Russian Federation); School of Biomedicine, Far Eastern Federal University,8 Sukhanova St., 690950, Vladivostok (Russian Federation); Kotov, A.Yu. [Institute for Theoretical and Experimental Physics,25 B. Cheremushkinskaya St., 117218, Moscow (Russian Federation)

    2017-04-18

    In this paper we study the SU(3)-gluodynamics shear viscosity temperature dependence on the lattice. To do so, we measure the correlation functions of the energy-momentum tensor in the range of temperatures T/T{sub c}∈[0.9,1.5]. To extract the shear viscosity we used two approaches. The first one is to fit the lattice data with a physically motivated ansatz for the spectral function with unknown parameters and then determine the shear viscosity. The second approach is to apply the Backus-Gilbert method allowing to extract the shear viscosity from the lattice data nonparametrically. The results obtained within both approaches agree with each other. Our results allow us to conclude that within the range T/T{sub c}∈[0.9,1.5] the SU(3)-gluodynamics reveals the properties of a strongly interacting system, which cannot be described perturbatively, and has the ratio η/s close to the value 1/4π of the N=4 Supersymmetric Yang-Mills theory.