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Sample records for pseudococcus saccharicola takahashi

  1. Genetic structure of Pseudococcus microcirculus (Hemiptera ...

    Indian Academy of Sciences (India)

    Department of Biology, Armstrong State University, Savannah, GA 31419, USA. Abstract ... [Zettler J. A., Adams K., Frederick B., Gutting A., Ingebretsen N., Ragsdale A. and Schrey A. 2017 Genetic structure of Pseudococcus ..... Park) and Larry Richardson (Florida Panther Wildlife Refuge) for ... University Press of Florida,.

  2. Ward-Takahashi identities in quantum electrodynamics

    Energy Technology Data Exchange (ETDEWEB)

    Nishijima, K; Sasaki, R [Tokyo Univ. (Japan). Dept. of Physics

    1975-03-01

    The Ward-Takahashi identities are derived for connected Green's functions in quantum electrodynamics without recourse to equal-time commutation relations, field equations and the Feynman-Dyson perturbation expansions. The argument is based on the dispersion formulation of field theories and only finite expressions are used throughout this derivation. These identities are shown to be consequences of the subtraction conditions imposed upon the 2-, 3- and 4-point Green's functions.

  3. RESEARCH CONCERNING THE CHEMICAL CONTROL AGAINST PSEUDOCOCCUS ADONIDUM L.

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    Maria ECOBICI

    2005-01-01

    Full Text Available Pseudococcus adonidum is a polyphag pest, which attacks different species of plants belonging to many genus and families, as: Citrus, Ficus, Cactaceae, Cycas, Dracena, Phoenix, Mimoza, Asparagus, Camellia etc. It is localized in large colonies on leaves, stems, branches, offshoots, and roots. The experiments were performed in solarium conditions during 2001-2002. Testing the efficiency of an insecticide sort was the aim of our experiment. During 2 experimental years, 9 products were tested: Confidor 200 SL, Calypso 400 SC; Pyrinex 25 EC, Vydate 10 G, Fastac 10 CE – RV, Sumithion 50 EC, Mospilan 20 SP, Decis 2,5 EC, Actellic 50 EC.

  4. A new mealybug in the genus Pseudococcus Westwood (Hemiptera: Coccomorpha: Pseudococcidae) from North America, with a key to species of Pseudococcus from the New World.

    Science.gov (United States)

    Ellenrieder, Natalia Von; Watson, Gillian

    2016-04-19

    A mealybug species that feeds on Agave spp., Pseudococcus variabilis sp. n. (Hemiptera: Coccomorpha: Pseudococcidae), is described from North America. Its entry into the United States was likely via the horticultural trade on its host plants in the genus Agave (Liliales: Agavaceae). Descriptions and illustrations of the adult female and male, diagnosis from congeners in the New World, and a molecular characterization based on COI are provided, as well as a key to adult females of all Pseudococcus species recorded from the New World.

  5. The chiral Ward-Takahashi identity in the ladder approximation

    International Nuclear Information System (INIS)

    Kugo, Taichiro; Mitchard, M.G.

    1992-01-01

    We show that the ladder approximation to the Schwinger-Dyson and Bethe-Salpeter equations preserves the Ward-Takahashi identity for the axial vector vertex if and only if we use the gluon momentum as the argument of the running coupling constant. However, in the usual Landau gauge this is inconsistent with the vector Ward identity. We propose a new method for making the ladder approximation scheme consistent with both vector and axial vector Ward identities. (orig.)

  6. The Full Ward-Takahashi Identity for Colored Tensor Models

    Science.gov (United States)

    Pérez-Sánchez, Carlos I.

    2018-03-01

    Colored tensor models (CTM) is a random geometrical approach to quantum gravity. We scrutinize the structure of the connected correlation functions of general CTM-interactions and organize them by boundaries of Feynman graphs. For rank- D interactions including, but not restricted to, all melonic φ^4 -vertices—to wit, solely those quartic vertices that can lead to dominant spherical contributions in the large- N expansion—the aforementioned boundary graphs are shown to be precisely all (possibly disconnected) vertex-bipartite regularly edge- D-colored graphs. The concept of CTM-compatible boundary-graph automorphism is introduced and an auxiliary graph calculus is developed. With the aid of these constructs, certain U (∞)-invariance of the path integral measure is fully exploited in order to derive a strong Ward-Takahashi Identity for CTMs with a symmetry-breaking kinetic term. For the rank-3 φ^4 -theory, we get the exact integral-like equation for the 2-point function. Similarly, exact equations for higher multipoint functions can be readily obtained departing from this full Ward-Takahashi identity. Our results hold for some Group Field Theories as well. Altogether, our non-perturbative approach trades some graph theoretical methods for analytical ones. We believe that these tools can be extended to tensorial SYK-models.

  7. Effect of different humidity levels on the biology of longtailed mealy bug pseudococcus longispinus (targioni and tozzetti) (homoptera: pseudococidae)

    International Nuclear Information System (INIS)

    Gillani, W.A.

    2009-01-01

    On determining the effects of different humidity levels on the biology of mealy bug Pseudococcus longispinus (Targioni and Tozzetti), it was found that the relative humidity (RH) at 35%, 55% and 75% had no effect on pre-adult development, adult longevity, life span and fecundity of P. longispinus. The survival of pre-adult stages was minimal at 35% RH. Sex ratio was male-biased at 35% RH and female-biased at 75% RH. (author)

  8. Investigating Biological Control Agents for Controlling Invasive Populations of the Mealybug Pseudococcus comstocki in France.

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    Thibaut Malausa

    Full Text Available Pseudococcus comstocki (Hemiptera: Pseudococcidae is a mealybug species native to Eastern Asia and present as an invasive pest in northern Italy and southern France since the start of the century. It infests apple and pear trees, grapevines and some ornamental trees. Biocontrol programmes against this pest proved successful in central Asia and North America in the second half of the 20th century. In this study, we investigated possible biocontrol agents against P. comstocki, with the aim of developing a biocontrol programme in France. We carried out systematic DNA-barcoding at each step in the search for a specialist parasitoid. First we characterised the French target populations of P. comstocki. We then identified the parasitoids attacking P. comstocki in France. Finally, we searched for foreign mealybug populations identified a priori as P. comstocki and surveyed their hymenopteran parasitoids. Three mealybug species (P. comstocki, P. viburni and P. cryptus were identified during the survey, together with at least 16 different parasitoid taxa. We selected candidate biological control agent populations for use against P. comstocki in France, from the species Allotropa burrelli (Hymenoptera: Platygastridae and Acerophagus malinus (Hymenoptera: Encyrtidae. The coupling of molecular and morphological characterisation for both pests and natural enemies facilitated the programme development and the rejection of unsuitable or generalist parasitoids.

  9. Monitoring Pseudococcus calceolariae (Hemiptera: Pseudococcidae) in Fruit Crops Using Pheromone-Baited Traps.

    Science.gov (United States)

    Flores, M Fernanda; Romero, Alda; Oyarzun, M Soledad; Bergmann, Jan; Zaviezo, Tania

    2015-10-01

    The citrophilus mealybug, Pseudococcus calceolariae (Maskell), is an important pest of fruit crops in many regions of the world. Recently, its sex pheromone has been identified and synthesized. We carried out field experiments with the goal of developing monitoring protocols for P. calceolariae using pheromone-baited traps. Traps checked hourly for 24 hours showed a distinct diel pattern of male flight, between 18:00 and 21:00 h. The presence of unnatural stereoisomers did not affect trap captures, with isomeric mixtures capturing similar amounts of males as the biological active isomer. Dose of isomeric mixture pheromone (0-100 µg) had a nonlinear effect on male captures, with 10, 30, and 50 µg capturing similar amounts. The effective range of pheromone traps was determined by placing traps at different distances (15, 40, and 80 m) from an infested blueberry field, loaded with 0, 1 and 25 µg of the pheromone. For all distances, 25 µg dose captured more males, and was highly attractive up to 40 m. There was a significant effect of lure age on male captures (0-150 d), with similar amount of males captured up to 90-day-old lure, and lower captures in the 150-day-old lure compared with fresh ones. We found significant positive correlations between P. calceolariae males caught in pheromone traps with female abundance and fruit infestation at harvest. Our results show the usefulness of P. calceolariae pheromones for monitoring at field level and provide information for the design of monitoring protocols. © The Authors 2015. Published by Oxford University Press on behalf of Entomological Society of America. All rights reserved. For Permissions, please email: journals.permissions@oup.com.

  10. Biology of Blepyrus clavicornis (Compere (Hymenoptera: Encyrtidae, a parasitoid of Pseudococcus viburni (Signoret (Hemiptera: Pseudococcidae

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    Vitor Pacheco da Silva

    Full Text Available Abstract Encyrtids (Hymenoptera: Encyrtidae are the most important and diverse group of natural enemies of mealybugs (Hemiptera: Pseudococcidae. Blepyrus clavicornis (Compere is the most common parasitoid associated with Pseudococcus viburni (Signoret in the Serra Gaúcha region, Brazil. We conducted laboratory studies to assess the development time, sex ratio, adult longevity, host stage selection for parasitism, and effect of food on the longevity of adult females of B. clavicornis. The experiments were conducted in a climate chamber at 25 ± 1 °C, 70 ± 10% RH and 12:12 L:D photoperiod. The solitary parasitoid B. clavicornis parasitized third-instar and adult female stages of P. viburni. The development time was more than 30 days (31.75 ± 0.38 for females and 30.02 ± 0.34 for males when B. clavicornis laid eggs in adult mealybug females, and 35 days (36.50 ± 0.50 for females and 34.24 ± 0.43 for males on third-instar mealybug nymphs. The wasps did not survive longer than four days when they were fed only water, while females survived for about 30 days when fed with honey. The lifespan of females is about 20 days longer than the lifespan of males. Although B. clavicornis can provide significant natural control, reducing the number of individuals in the next generation by parasitizing advanced mealybug instars, we consider it unpromising for use in applied biological-control programs. Furthermore, the predominance of males in the progeny observed here suggests that P. viburni may not be the most suitable or preferred host for B. clavicornis.

  11. Dispersion approach to anomalies in the axial-vector Ward-Takahashi identities

    Energy Technology Data Exchange (ETDEWEB)

    Nishijima, K. Sasaki, R. (Tokyo Univ. (Japan). Dept. of Physic)

    1975-01-01

    On the basis of dispersion relations and unitarity anomalous Ward-Takahashi identities for the axial-vector current are derived in quantum electrodynamics. In this derivation use of divergent unrenormalized expressions is intentionally avoided, and only finite renormalized expressions are employed from the start. The origin of the anormalies is attributed to a mismatch of the subtraction conditions present in the naive Ward-Takahashi identities. The resulting anomalous Ward-Takahashi identities are valid in every order of the perturbation expansion and can be cast in the form of an operator equation. In the course of this derivation we encounter the problem of how to regularize operator products and a possible solution of this problem is provided in terms of subtraction conditions.

  12. Dispersion approach to anomalies in the axial-vector Ward-Takahashi identities

    International Nuclear Information System (INIS)

    Nishijima, Kazuhiko; Sasaki, Ryu

    1975-01-01

    On the basis of dispersion relations and unitarity anomalous Ward-Takahashi identities for the axial-vector current are derived in quantum electrodynamics. In this derivation use of divergent unrenormalized expressions is intentionally avoided, and only finite renormalized expressions are employed from the start. The origin of the anormalies is attributed to a mismatch of the subtraction conditions present in the naive Ward-Takahashi identities. The resulting anomalous Ward-Takahashi identities are valid in every order of the perturbation expansion and can be cast in the form of an operator equation. In the course of this derivation we encounter the problem of how to regularize operator products and a possible solution of this problem is provided in terms of subtraction conditions. (auth.)

  13. Checking the transverse Ward-Takahashi relation at one-loop order in four dimensions

    International Nuclear Information System (INIS)

    Pennington, M R; Williams, R

    2006-01-01

    Some time ago Takahashi derived the so-called transverse relations relating Green's functions of different orders to complement the well-known Ward-Green-Takahashi identities of gauge theories by considering wedge rather than inner products. These transverse relations have the potential to determine the full fermion-boson vertex in terms of the renormalization functions of the fermion propagator. He and Yu have given an indicative proof at one-loop level in four dimensions. However, their construct involves the fourth-rank Levi-Civita tensor defined only unambiguously in four dimensions exactly where the loop integrals diverge. Consequently, here we explicitly check the proposed transverse Ward-Takahashi relation holds at one-loop order in d-dimensions, with d = 4 + ε

  14. Light-front Ward-Takahashi identity for two-fermion systems

    International Nuclear Information System (INIS)

    Marinho, J. A. O.; Frederico, T.; Pace, E.; Salme, G.; Sauer, P. U.

    2008-01-01

    We propose a three-dimensional electromagnetic current operator within light-front dynamics that satisfies a light-front Ward-Takahashi identity for two-fermion systems. The light-front current operator is obtained by a quasipotential reduction of the four-dimensional current operator and acts on the light-front valence component of bound or scattering states. A relation between the light-front valence wave function and the four-dimensional Bethe-Salpeter amplitude both for bound or scattering states is also derived, such that the matrix elements of the four-dimensional current operator can be fully recovered from the corresponding light-front ones. The light-front current operator can be perturbatively calculated through a quasipotential expansion, and the divergence of the proposed current satisfies a Ward-Takahashi identity at any given order of the expansion. In the quasipotential expansion the instantaneous terms of the fermion propagator are accounted for by the effective interaction and two-body currents. We exemplify our theoretical construction in the Yukawa model in the ladder approximation, investigating in detail the current operator at the lowest nontrivial order of the quasipotential expansion of the Bethe-Salpeter equation. The explicit realization of the light-front form of the Ward-Takahashi identity is verified. We also show the relevance of instantaneous terms and of the pair contribution to the two-body current and the Ward-Takahashi identity

  15. Meson-baryon-baryon vertex function and the Ward-Takahashi identity

    International Nuclear Information System (INIS)

    Wang, S.; Banerjee, M.K.

    1996-01-01

    Ohta proposed a solution for the well-known difficulty of satisfying the Ward-Takahashi identity for a photo-meson-baryon-baryon amplitude (γMBB) when a dressed meson-baryon-baryon (MBB) vertex function is present. He obtained a form for the γMBB amplitude which contained, in addition to the usual pole terms, longitudinal seagull terms which were determined entirely by the MBB vertex function. He arrived at his result by using a Lagrangian which yields the MBB vertex function at tree level. We show that such a Lagrangian can be neither Hermitian nor charge conjugation invariant. We have been able to reproduce Ohta close-quote s result for the γMBB amplitude using the Ward-Takahashi identity and no other assumption, dynamical or otherwise, and the most general form for the MBB and γMBB vertices. However, contrary to Ohta close-quote s finding, we find that the seagull terms are not robust. The seagull terms extracted from the γMBB vertex occur unchanged in tree graphs, such as in an exchange current amplitude. But the seagull terms which appear in a loop graph, as in the calculation of an electromagnetic form factor, are, in general, different. The whole procedure says nothing about the transverse part of the (γMBB) vertex and its contributions to the amplitudes in question. copyright 1996 The American Physical Society

  16. Determinación del umbral de detección de Pseudococcus viburni (Hemiptera: Pseudococcidae por PCR Determination of the detection threshold of Pseudococcus viburni (Hemiptera: Pseudococcidae by PCR

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    Diana Vera

    2012-06-01

    Full Text Available La cochinilla harinosa de los frutales Pseudococcus viburni (Signoret es una plaga cuarentenaria, presente en el Alto Valle de Río Negro y Neuquén, Argentina. Su detección durante la fiscalización aduanera, aun en los estados inmaduros, provoca rechazos de la fruta fresca argentina con destino a los mercados internacionales. Las técnicas actuales de identificación de pseudocóccidos y otros cocoideos implican la realización de preparados microscópicos que requieren varios días. Por esto, la disminución de los tiempos de identificación es importante sobre todo en las tareas de fiscalización. En este trabajo, se determinó el umbral de detección específica de P. viburni mediante PCR, como así también, la implementación de un método rápido de extracción de ADN mediante DNAzolT. Insectos de diferentes estados de desarrollo (huevo, ninfas (tres estados ninfales y adulto, conservados en etanol pro análisis a -20 ºC, provenientes de montes frutales del Alto Valle, Argentina, fueron procesados según el protocolo del fabricante y se logró obtener ADN de buena calidad y concentración. Una alícuota del mismo fue utilizado como templado para una reacción de PCR usando primers específicos para P. viburni, registrados en bibliografía y como control positivo ADN de P. viburni de colección entomológica. Los primers utilizados y sus secuencias son A4 (5'-cccgcggccgttctctcttt-3' y A5 (5'-atatgttgtgcatagttgtgtgtgcgc-3', diseñados por Beuning et al. (1999. La amplificación generó una banda de peso molecular esperado de 650 pb. en gel de agarosa al 1.5% en todos los estadios, se determinó como límite de detección el estado de huevo. Esta técnica constituye una detección específica de P. viburni en un lapso máximo de 48 h.The obscure mealybug Pseudococcus viburni (Signoret is a quarantine pest present in the Upper Valley of Río Negro and Neuquén, Argentina. The detection of any growth stage of the mealybug in quarantine

  17. Ewing Symposium in Honor of Taro Takahashi: The controversial aspects of the contemporary [carbon] cycle

    Energy Technology Data Exchange (ETDEWEB)

    Broecker, Wallace Smith

    2001-12-31

    This Ewing Symposium in honor of Taro Takahashi's work on the carbon cycle was held at Lamont-Doherty Earth Observatory, Palisades, New York, on October 26-27, 2000. A program and set of abstracts are appended to this report. A summary of the meeting (included in this report) will be published in Global Biogeochemical Cycles. The theme of the symposium was the magnitude and cause of excess carbon storage on the north temperate continents. Disagreement exists on the relative roles of forest regrowth and fertilization by excess fixed nitrogen and carbon dioxide, as well as the distribution of this storage. Phenomena playing important roles include pre-anthropogenic gradients in carbon dioxide, the so-called rectification effect, uptake and release of carbon dioxide by the ocean, soil nitrogen dynamics, atmospheric carbon-13 gradients, and the role of fire.

  18. 高橋睦郎の世界/The World of Mutsuo Takahashi

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    Kayoko YAMASAKI

    2015-07-01

      Abstract This paper presents the poetry of Mutsuo Takahashi, one of the most important contemporary Japanese poets. We particularly focus on analysing the tree motif in the poems created since the poets’ early stages to the present day. The collection of poetry Sister’s Islands (1995, inspired by the poet’s childhood, full of tragic events such as his father’s premature death and his mother’s abandonment of him, interweaves autobiographical and mythological elements in a ringlike structure. However, after the year 2000 a new creative phase in his work ensued, wherein the poet deals with the problems facing our world such as ecological issues, disintegration of the family, terrorism, etc. The poems created after the great earthquake in Tohoku in 2011 open up new topics such as the ecological catastrophe caused by nuclear energy, loss of the meaning of words in the contemporary era, when information is exchanged at a lightning speed.

  19. Trace and Ward-Takahashi identity anomalies in an SU(3) current model with energy-momentum tensor

    International Nuclear Information System (INIS)

    Zacrep, D.B.; Young, B.

    1975-01-01

    We discuss the validity of the naive Ward-Takahashi identities and trace identities for arbitrary n-point functions (n-pf's) of scalar, pseudoscalar, vector, and axial-vector currents and the improved energy-momentum tensor, thus extending the previous investigations in a unified way. We show that the validity of the naive Ward-Takahashi identities of the energy-momentum tensor implies the satisfaction of those of the vector currents. This removes an ambiguity concerning the minimal sets of anomalous current Ward-Takahashi identities. We find that all the anomalous Ward-Takahashi identities for the broad structure of n-pf's are again restricted to the axial-vector current of n-pf's of abnormal parity in a well-defined pattern, and the trace identity anomalies occur only in normal-parity n-pf's. We give all these anomalies. Our results show that there are no new anomalies associated with the inclusion of the energy-momentum tensor in the n-pf's

  20. Fatigue crack growth threshold as a design criterion - statistical scatter and load ratio in the Kitagawa-Takahashi diagram

    International Nuclear Information System (INIS)

    Kolitsch, S.; Gänser, H.-P.; Maierhofer, J.; Pippan, R.

    2016-01-01

    Cracks in components reduce the endurable stress so that the endurance limit obtained from common smooth fatigue specimens cannot be used anymore as a design criterion. In such cases, the Kitagawa-Takahashi diagram can be used to predict the admissible stress range for infinite life, at a given crack length and stress range. This diagram is constructed for a single load ratio R. However, in typical mechanical engineering applications, the load ratio R varies widely due to the applied load spectra and residual stresses. In the present work an extended Kitagawa-Takahashi diagram accounting for crack length, crack extension and load ratio is constructed. To describe the threshold behaviour of short cracks, a master resistance curve valid for a wide range of steels is developed using a statistical approach. (paper)

  1. A review of the genus Tuberaleyrodes Takahashi (Hemiptera: Aleyrodidae) with description of five new species from Brunei, Hong Kong and Malaysia.

    Science.gov (United States)

    Dubey, Anil Kumar; Martin, Jon H

    2018-03-28

    The whitefly genus Tuberaleyrodes Takahashi is reviewed using types and determined specimens. The generic diagnosis is redefined together with description of five new species: T. bruneiensis Dubey Martin sp. nov. from Brunei, T. crypta Dubey Martin sp. nov. from Hong Kong, and T. ordo Dubey Martin sp. nov., T. aequalis Dubey Martin sp. nov. and T. variabilis Dubey Martin sp. nov. from Malaysia. New species descriptions are accompanied with camera lucida drawings and microphotographs of holotype and paratypes. Tuberaleyrodes actinodaphnis Takahashi is elevated from its status as a variety of T. machili Takahashi to species level. Lectotypes are selected for T. actinodaphnis Takahashi Stat. nov. and T. bobuae Takahashi. Tuberaleyrodes actinodaphnis Takahashi is a new record to Taiwan. A new combination, Tuberaleyrodes glutae (Corbett) Comb. nov. is proposed for Dialeurodes glutae Corbett. Two species, T. glutae (Corbett) and Tuberaleyrodes spiniferosa (Corbett) are re-described, and placement of T. spiniferosa in the genus Tuberaleyrodes is confirmed. The genus Tuberaleyrodes is newly recorded from Borneo and Sulawesi. An identification key to puparia of Tuberaleyrodes species so far described is provided along with the countries of present records. Four plants families viz., Annonaceae, Fabaceae, Myristicaceae and Pentaphylacaeae are recorded as new hosts for Tuberaleyrodes species. New host plant records are indicated.

  2. Parametric Ward-Takahashi identity in disordered systems and the integral identity associated with the Calogero-Sutherland model

    International Nuclear Information System (INIS)

    Taniguchi, N.

    1997-01-01

    By utilizing the symmetric property known as the Ward-Takahashi identity in disordered systems, we explore the novel symmetry relations which hold in one-dimensional systems with inverse square interaction (the Calogero-Sutherland model). The identities emerge totally from the algebraic structure of the model. They show that the dynamical correlators are connected with one another, involving the higher-order integrals of motion. We obtain the result for the coupling strengths λ=1/2, 1, and 2, and conjecture that a similar relation may hold for arbitrary rational λ. copyright 1997 The American Physical Society

  3. Chiral ward-Takahashi identities at finite temperature and chiral phase transition in (2+1) dimensional chiral Gross-Neveu model

    International Nuclear Information System (INIS)

    Shen Kun; Qiu Zhongping

    1993-01-01

    Chiral Ward-Takahashi identities at finite temperature are derived in (2+1) dimensional chiral Gross-Neveu model. In terms of these identities, fermion mass generation and the mass spectra of bound states are investigate at finite temperature. Taking the fermion mass as an order parameter, the authors discuss the phase structure and chiral phase transition and obtain the critical temperature

  4. Genetic structure of Pseudococcus microcirculus (Hemiptera ...

    Indian Academy of Sciences (India)

    J. A. ZETTLER

    Life Technologies, Carlsbad, USA) to ... N, genetic diversity estimates including sample size; Ar, allelic richness; pAr, private allelic richness; HE, expected heterozygosity; HO, .... Harrington D. 1985 Burton–Swartz cypress company of Florida.

  5. Global S U (3 )C×S U (2 )L×U (1 )Y linear sigma model: Axial-vector Ward-Takahashi identities and decoupling of certain heavy BSM particles due to the Goldstone theorem

    Science.gov (United States)

    Lynn, Bryan W.; Starkman, Glenn D.

    2017-09-01

    In the S U (2 )L×S U (2 )R linear sigma model with partially conserved axial-vector currents, a tower of Ward-Takahashi identities (WTI) have long been known to give relations among 1-scalar-particle-irreducible (1 -ϕ -I ) Green's functions, and among I-scalar-particle-reducible (1 -ϕ -R ) transition-matrix (T-matrix) elements for external scalars [i.e. the Brout-Englert-Higgs (BEH) scalar H , and three pseudoscalars π →]. In this paper, we extend these WTI and the resulting relations to the S U (3 )C×S U (2 )L×U (1 )Y linear sigma model including the heaviest generation of Standard Model (SM) fermions—the ungauged (i.e. global) Standard Model SMtb τ ντ G —supplemented with the minimum necessary neutrino content—right-handed neutrinos and Yukawa-coupling-induced Dirac neutrino mass—to obtain the charge-parity (C P )-conserving νDSMtb τ ντ G , and extract powerful constraints on the effective Lagrangian: e.g. showing that they make separate tadpole renormalization unnecessary, and guarantee infrared finiteness. The crucial observation is that ultraviolet quadratic divergences (UVQD), and all other relevant operators, contribute only to mπ2, a pseudo-Nambu-Goldstone boson (NGB) mass-squared, which appears in intermediate steps of calculations. A WTI between T-matrix elements (or, in this global theory equivalently the Goldstone theorem) then enforces mπ2=0 exactly for the true NGB in the spontaneous symmetry breaking (SSB) mode of the theory. The Goldstone theorem thus causes all relevant operator contributions, originating to all-loop-orders from virtual scalars H ,π → , quarks qLc;tRc;bRc and leptons lL;ντR;τR with (c =r , w , b ), to vanish identically. We show that our regularization-scheme-independent, WTI-driven results are unchanged by the addition of certain S U (3 )C×S U (2 )L×U (1 )Y heavy (MHeavy2≫|q2|,mWeak2 ) C P -conserving matter, such as originate in certain beyond the SM (BSM) models. The global axial-vector WTI

  6. Global U(1 ) Y⊗BRST symmetry and the LSS theorem: Ward-Takahashi identities governing Green's functions, on-shell T -matrix elements, and the effective potential in the scalar sector of the spontaneously broken extended Abelian Higgs model

    Science.gov (United States)

    Lynn, Bryan W.; Starkman, Glenn D.

    2017-09-01

    The weak-scale U (1 )Y Abelian Higgs model (AHM) is the simplest spontaneous symmetry breaking (SSB) gauge theory: a scalar ϕ =1/√{2 }(H +i π )≡1/√{2 }H ˜ei π ˜/⟨H ⟩ and a vector Aμ. The extended AHM (E-AHM) adds certain heavy (MΦ2,Mψ2˜MHeavy2≫⟨H ⟩2˜mWeak2 ) spin S =0 scalars Φ and S =1/2 fermions ψ . In Lorenz gauge, ∂μAμ=0 , the SSB AHM (and E-AHM) has a global U (1 )Y conserved physical current, but no conserved charge. As shown by T. W. B. Kibble, the Goldstone theorem applies, so π ˜ is a massless derivatively coupled Nambu-Goldstone boson (NGB). Proof of all-loop-orders renormalizability and unitarity for the SSB case is tricky because the Becchi-Rouet-Stora-Tyutin (BRST)-invariant Lagrangian is not U (1 )Y symmetric. Nevertheless, Slavnov-Taylor identities guarantee that on-shell T-matrix elements of physical states Aμ,ϕ , Φ , ψ (but not ghosts ω , η ¯ ) are independent of anomaly-free local U (1 )Y gauge transformations. We observe here that they are therefore also independent of the usual anomaly-free U (1 )Y global/rigid transformations. It follows that the associated global current, which is classically conserved only up to gauge-fixing terms, is exactly conserved for amplitudes of physical states in the AHM and E-AHM. We identify corresponding "undeformed" [i.e. with full global U (1 )Y symmetry] Ward-Takahashi identities (WTI). The proof of renormalizability and unitarity, which relies on BRST invariance, is undisturbed. In Lorenz gauge, two towers of "1-soft-pion" SSB global WTI govern the ϕ -sector, and represent a new global U (1 )Y⊗BRST symmetry not of the Lagrangian but of the physics. The first gives relations among off-shell Green's functions, yielding powerful constraints on the all-loop-orders ϕ -sector SSB E-AHM low-energy effective Lagrangian and an additional global shift symmetry for the NGB: π ˜→π ˜+⟨H ⟩θ . A second tower, governing on-shell T-matrix elements, replaces the old Adler

  7. arXiv Global $SU(2)_L \\otimes$BRST symmetry and its LSS theorem: Ward-Takahashi identities governing Green's functions, on-shell T-Matrix elements, and $V_{eff}$, in the scalar-sector of certain spontaneously broken non-Abelian gauge theories

    CERN Document Server

    Güngör, Özenç; Starkman, Glenn D.; Stora, Raymond

    This work is dedicated to the memory of Raymond Stora (1930-2015). $SU(2)_L$ is the simplest spontaneous symmetry breaking (SSB) non-Abelian gauge theory: a complex scalar doublet $\\phi=\\frac{1}{\\sqrt{2}}\\begin{bmatrix}H+i\\pi_3-\\pi_2 +i\\pi_1\\end{bmatrix}\\equiv\\frac{1}{\\sqrt{2}}\\tilde{H}e^{2i\\tilde{t}\\cdot\\tilde{\\vec{\\pi}}/}\\begin{bmatrix}10\\end{bmatrix}$ and a vector $\\vec{W}^\\mu$. In Landau gauge, $\\vec{W}^\\mu$ is transverse, $\\vec{\\tilde{\\pi}}$ are massless derivatively coupled Nambu-Goldstone bosons (NGB). A global shift symmetry enforces $m^{2}_{\\tilde{\\pi}}=0$. We observe that on-shell T-matrix elements of physical states $\\vec{W}^\\mu$,$\\phi$ are independent of global $SU(2)_{L}$ transformations, and the associated global current is exactly conserved for amplitudes of physical states. We identify two towers of "1-soft-pion" global Ward-Takahashi Identities (WTI), which govern the $\\phi$-sector, and represent a new global symmetry, $SU(2)_L\\otimes$BRST, a symmetry not of the Lagrangian but of the physical...

  8. The Ward-Takahashi identities to describe nucleon and pion electroweak transitions

    International Nuclear Information System (INIS)

    Bunatyan, G.G.

    2008-01-01

    For nucleons and pions, the relations among the propagators and vertex functions to describe the vector electroweak transitions are acquired as immediate corollary of symmetries of the hadron strong and electroweak interactions. A point of value is that the considered system comprises strongly interacting hadrons of different sorts. The electromagnetic corrections to hadron vertex functions and propagators are taken into account up to e 2 order. The sequels are discussed in the light of calculation of the radiative corrections in describing the nucleon and pion electroweak transitions

  9. Effects of Irradiation on the Adults of Sitophilus Sasakii Takahashi (Curculionidae) and their Offspring; Influence de l'irradiation sur les adultes de Sitophilus Sasakii Takahashi (Curculionidae) et leurs descendants; Dejstvie oblucheniya na vzroslykh osobej Sitophilus Sasakii Takahashi (Curculionidae) i na posleduyushchie pokoleniya; Influencia de la irradiacion sobre los adultos del Sitophilus Sasakii Takahashi (Curculionidae) y sus descendientes

    Energy Technology Data Exchange (ETDEWEB)

    Laviolette, P.; Nardon, P. [Institut National des Sciences Appliquees, Lyon-Villeurbanne (France)

    1963-09-15

    Co{sup 60} gamma rays bring about a significant reduction in expectation of life as from 5000 r in the case of males and 7000 r in that of females. All insects die within about twelve days after a dose of 8000 r and within four days after 100 000 r. Study of the pattern of mortality as a function of time shows that, up to 6000 r, irradiation induces a progressive heterogeneity in the population, the more resistant individuals being isolated. Examination of the survival curves shows that death is always deferred. It occurs suddenly after a latent phase, the duration of which varies, according to dose, between twelve days (5000 r) and one day (100 000 r). Study of the variability coefficient and of the average survival time according to dose suggests that two sensitive mechanisms are destroyed by irradiation. Radiosensitivity appears to increase with age. Fertility is reduced by half as from 2000 r. A period of temporary sterility appears at 5000 and 6000 r, and complete sterility sets in at 15 000 r. Sterilization by X-rays is more effective at 150 than at 80 kV. Egg production is much more radioresistant than fertility, eggs being laid even at 16 000 r. Irradiation of parents induces a decrease in both fertility and weight of offspring and shows the latter's rate of development. These effects are transmitted to succeeding generations without any effort at selection on the part of the experimenter. The first two effects tend to disappear, but the decrease in the rate of development remains constant for at least ten generations. It would seem possible to use radiation for disinfestation of foodstuffs. (author) [French] Le rayonnement gamma de ''6''0Co reduit significativement la moyenne de vie des males a partir de 5000 r, et celle des femelles a partir de 7000 r. Tous les insectes meurent en une douzaine de jours a 8000 r, en quatre jours a 100 000 r. Jusqu'a 6000 r, l'etude de la repartition de la mortalite dans le temps montre que l'irradiation fait apparaitre progressivement une heterogeneite dans la population, isolant des individus plus resistants. L'examen des courbes de survie revele que la mort est toujours differee. Elle apparait brusquement apres une phase de, latence plus ou moins longue selon la dose, variant de douze jours (5000 r) a un jour (100 000 r). L'etude du coefficient de variabilite et de la moyenne de survie en fonction de la dose suggere la presence de deux mecanismes sensibles detruits par l'irradiation. La sensibilite au rayonnement semble augmenter avec l'age. Des 2000 r, la fertilite se trouve reduite de moitie. A 5000 r et 6000 r, on observe une phase de sterilite temporaire. La sterilisation totale est acquise des 15 000 r. La sterilisation par les rayons X est plus efficace a 150 kV qu'a 80 kV. La fecondite est beaucoup plus resistante que la fertilite au rayonnement, puisque meme a 16 000 r des oeufs sont pondus. L'irradiation des parents a pour consequence de diminuer la fertilite et le poids des descendants, et d'augmenter leur duree de developpement. Ces effets se transmettent d'une generation a l'autre sans que l'experimentateur procede a aucune selection. Alors que les deux premiers tendent a disparaitre, l'augmentation de la duree du developpement reste stable pendant au qioins dix generations. Il est possible d'envisager l'emploi des rayonnements pour la desinsectisation des denrees. (author) [Spanish] La radiacion gamma del {sup 60}Co reduce significativamente la vida media de los machos a partir de 5000 r, y la de las hembras a partir de 7000. Todos los insectos mueren en doce dias si la dosis es de 8000 r, y en cuatro dias si es de 100 000. Hasta 6000 r, elestudiodela distribucion de la mortalidad en el tiempo muestra que la irradiacion hace aparecer una heterogeneidad progresiva en la poblacion, aislando los individuos mas resistentes. El examen de las curvas de supervivencia revela que la muerte siempre es diferida. Sobreviene bruscamente despues de una fase de latencia mas o menos prolongada segun la dosis y que varia entre 12 dias (5000 r) y un dia (100 000 r). El estudio del coeficiente de variabilidad y de la supervivencia media en funcion de la dosis sugiere la existencia de dos mecanismos sensibles que son destruidos por la irradiacion. La sensibilidad a las radiaciones parece aumentar con la edad. A 2000 roentgens, la fertilidad queda ya reducida a la mitad. A 5000 y 6000 roentgens se observa una fase de esterilidad temporal. La esterilizacion total se alcanza a 15 000 roentgens. La esterilizacion por rayos X es mas eficaz a 150 kV que a 80 kV. La fecundidad es mucho mas resistente a las radiaciones que la fertilidad, pues incluso a 16 000 roentgens se observa la puesta de huevos. La irradiacion de los padres tiene por consecuencia la disminucion de la fertilidad y del peso de los descendientes y el aumento de la duracion de la fase de desarrollo. Estos efectos se transmiten de una generacion a otra sin que el experimentador proceda a seleccion alguna. Mientras los dos primeros tienden a desaparecer, el aumento de la duracion de la fase .de desarrollo permanece estable durante diez generaciones, por lo menos. Cabe prever el empleo de las radiaciones para la desinsectacion de los articulos alimenticios. (author) [Russian] Obluchenie gamma-luchami Sovo znachitel'no umen'shaet srednyuyu prodolzhitel'nost' zhizni muzhskikh osobej, nachinaya s dozy 5000 r, i zhenskikh osobej - s dozy 7000 r. Vse nasekomye pogibayut v techenie 12 dnej pri doze 8000 r i chetyrekh dnej pri doze 100 000 r. Issledovanie raspredeleniya smertnosti v zavisimosti ot vremeni pri doze do 6000 r pokazyvaet, chto obluchenie posledovatel'no vyyavlyaet geterogennost' populyatsii, izoliruya pri ehtom bolee stojkie osobi. Izuchenie krivykh vyzhivaniya pokazyvaet, chto nastuplenie smerti postoyanno zamedleno. Ona nastupaet vnezapno posle bolee ili menee prodolzhitel'noj latentnoj fazy v zavisimosti ot dozy. Kolebaniya sostavlyayut ot 12 dnej (5000 r) do odnogo dnya (100 000 r). Issledovanie koehffitsienta variabil'nosti i srednego sroka vyzhivaniya v zavisimosti ot dozy predpolagaet nalichie dvukh chuvstvitel'nykh mekhanizmov, narushaemykh oblucheniem. Chuvstvitel'nost' k oblucheniyu, po-vidimomu, vozrastaet s vozrastom. S 2000 r plodovitost' sokrashchaetsya vdvoe. Pri 5000 i 6000 r nablyudaetsya faza vremennogo besplodiya. Polnaya sterilizatsiya dostigaetsya pri doze 15 000 r i vyshe. Sterilizatsiya rentgenovskimi luchami bolee ehffektivna pri 150 kv, chem pri 80 kv. Sposobnost' k oplodotvoreniyu znachitel'no bolee stojka, chem plodovitost', po otnosheniyu k oblucheniyu, potomu chto dazhe pri 16 000 r prodolzhaetsya otkladyvanie yaits. Obluchenie roditelej vedet k sokrashcheniyu plodovitosti i vesa posleduyushchikh pokolenij i uvelicheniyu sroka ikh razvitiya. Ehti posledstviya peredayutsya ot odnogo pokoleniya drugomu, prichem ehksperimentator ne vedet nikakoj selektsii. V to vremya kak dva pervykh pokoleniya imeyut tendentsiyu k ischeznoveniyu, uvelichenie sroka razvitiya prodolzhaet ostavat'sya stabil'nym, po krajnej mere, dlya desyati pokolenij. Predstavlyaetsya vozmozhnym primenenie radiatsii dlya dezinsektsii produktov pitaniya. (author)

  10. Molecular and Morphological Identification of Mealybug Species (Hemiptera: Pseudococcidae) in Brazilian Vineyards

    Science.gov (United States)

    Pacheco da Silva, Vitor C.; Bertin, Aline; Blin, Aurélie; Germain, Jean-François; Bernardi, Daniel; Rignol, Guylène; Botton, Marcos; Malausa, Thibaut

    2014-01-01

    Mealybugs (Hemiptera: Pseudococcidae) are pests constraining the international trade of Brazilian table grapes. They damage grapes by transmitting viruses and toxins, causing defoliation, chlorosis, and vigor losses and favoring the development of sooty mold. Difficulties in mealybug identification remain an obstacle to the adequate management of these pests. In this study, our primary aim was to identify the principal mealybug species infesting the major table grape-producing regions in Brazil, by morphological and molecular characterization. Our secondary aim was to develop a rapid identification kit based on species-specific Polymerase Chain Reactions, to facilitate the routine identification of the most common pest species. We surveyed 40 sites infested with mealybugs and identified 17 species: Dysmicoccus brevipes (Cockerell), Dysmicoccus sylvarum Williams and Granara de Willink, Dysmicoccus texensis (Tinsley), Ferrisia cristinae Kaydan and Gullan, Ferrisia meridionalis Williams, Ferrisia terani Williams and Granara de Willink, Phenacoccus baccharidis Williams, Phenacoccus parvus Morrison, Phenacoccus solenopsis Tinsley, Planococcus citri (Risso), Pseudococcus viburni (Signoret), Pseudococcus cryptus Hempel, four taxa closely related each of to Pseudococcus viburni, Pseudococcus sociabilis Hambleton, Pseudococcus maritimus (Ehrhorn) and Pseudococcus meridionalis Prado, and one specimen from the genus Pseudococcus Westwood. The PCR method developed effectively identified five mealybug species of economic interest on grape in Brazil: D. brevipes, Pl. citri, Ps. viburni, Ph. solenopsis and Planococcus ficus (Signoret). Nevertheless, it is not possible to assure that this procedure is reliable for taxa that have not been sampled already and might be very closely related to the target species. PMID:25062012

  11. Molecular and morphological identification of mealybug species (Hemiptera: Pseudococcidae in Brazilian vineyards.

    Directory of Open Access Journals (Sweden)

    Vitor C Pacheco da Silva

    Full Text Available Mealybugs (Hemiptera: Pseudococcidae are pests constraining the international trade of Brazilian table grapes. They damage grapes by transmitting viruses and toxins, causing defoliation, chlorosis, and vigor losses and favoring the development of sooty mold. Difficulties in mealybug identification remain an obstacle to the adequate management of these pests. In this study, our primary aim was to identify the principal mealybug species infesting the major table grape-producing regions in Brazil, by morphological and molecular characterization. Our secondary aim was to develop a rapid identification kit based on species-specific Polymerase Chain Reactions, to facilitate the routine identification of the most common pest species. We surveyed 40 sites infested with mealybugs and identified 17 species: Dysmicoccus brevipes (Cockerell, Dysmicoccus sylvarum Williams and Granara de Willink, Dysmicoccus texensis (Tinsley, Ferrisia cristinae Kaydan and Gullan, Ferrisia meridionalis Williams, Ferrisia terani Williams and Granara de Willink, Phenacoccus baccharidis Williams, Phenacoccus parvus Morrison, Phenacoccus solenopsis Tinsley, Planococcus citri (Risso, Pseudococcus viburni (Signoret, Pseudococcus cryptus Hempel, four taxa closely related each of to Pseudococcus viburni, Pseudococcus sociabilis Hambleton, Pseudococcus maritimus (Ehrhorn and Pseudococcus meridionalis Prado, and one specimen from the genus Pseudococcus Westwood. The PCR method developed effectively identified five mealybug species of economic interest on grape in Brazil: D. brevipes, Pl. citri, Ps. viburni, Ph. solenopsis and Planococcus ficus (Signoret. Nevertheless, it is not possible to assure that this procedure is reliable for taxa that have not been sampled already and might be very closely related to the target species.

  12. 77 FR 22510 - Importation of Fresh Bananas From the Philippines Into the Continental United States

    Science.gov (United States)

    2012-04-16

    ... hirsutus) Coffee (Planococcus lilacinus) Pacific (Planococcus minor) Cryptic (Pseudococcus cryptus) Mango (Rastrococcus invadens) Philippine mango (Rastrococcus spinosus) Fungi Cercospaora hayi Calpouzos Guignardia.... 319.56-57 would provide for the use of trapping to demonstrate that registered places of production...

  13. Stemcell Information: SKIP000396 [SKIP Stemcell Database[Archive

    Lifescience Database Archive (English)

    Full Text Available Mycoplasma test Yes G-banding ... Yes ... Takahashi K Takahashi K ... Department of Stem Cell Biology, Institute ...for Frontier Medical Sciences, Kyoto University. Department of Stem Cell Biology,

  14. Retraction notice to “Methylation of apoptosis related genes in the pathogenesis and prognosis of prostate cancer” [Cancer Lett. 242 (2) (2006) 222–230]. Makoto Suzuki, Hisayuki Shigematsu, Narayan Shivapurkar, Jyotsna Reddy, Kuniharu Miyajima, Takao Takahashi, Adi F. Gazdar, Eugene P. Frenke.

    Science.gov (United States)

    2015-04-28

    Available online . This article has been retracted: please see Elsevier Policy on Article Withdrawal (http://www.elsevier.com/locate/withdrawalpolicy). This article has been retracted at the request of the first author, who accepts responsibility. Following an internal review at the UT Southwestern Medical Center in Dallas, evidence has been found of improper manipulation and duplication of Figure 1 in this article.

  15. 78 FR 8957 - Importation of Fresh Bananas From the Philippines into the Continental United States

    Science.gov (United States)

    2013-02-07

    ... Inspection Service is committed to compliance with the E-Government Act to promote the use of the Internet...; Pseudococcus cryptus (Hempel), the cryptic mealybug; Rastrococcus invadens (Williams), the mango mealybug; and Rastrococcus spinosus (Robinson), the Philippine mango mealybug. (a) General requirements. (1) The national...

  16. Enumeration and estimation of insect attack fruits of some cultivars ...

    African Journals Online (AJOL)

    In this study, five cultivars of Punica granatum identified (two of which are endemic, while the other three are new) were grown in certain farms at Al-Taif, Saudi Arabia. Enumeration to the insects attack its' fruits illustrated that, there are three insects, namely, Virchola livia, Ectomyelois ceratonia and Pseudococcus maitimus ...

  17. Renormalization of an abelian gauge theory in stochastic quantization

    International Nuclear Information System (INIS)

    Chaturvedi, S.; Kapoor, A.K.; Srinivasan, V.

    1987-01-01

    The renormalization of an abelian gauge field coupled to a complex scalar field is discussed in the stochastic quantization method. The super space formulation of the stochastic quantization method is used to derive the Ward Takahashi identities associated with supersymmetry. These Ward Takahashi identities together with previously derived Ward Takahashi identities associated with gauge invariance are shown to be sufficient to fix all the renormalization constants in terms of scaling of the fields and of the parameters appearing in the stochastic theory. (orig.)

  18. Convergence Theorem for Equilibrium and Variational Inequality Problems and a Family of Infinitely Nonexpansive Mappings in Hilbert Space

    Directory of Open Access Journals (Sweden)

    Zhou Yinying

    2014-01-01

    Full Text Available We introduce a hybrid iterative scheme for finding a common element of the set of common fixed points for a family of infinitely nonexpansive mappings, the set of solutions of the varitional inequality problem and the equilibrium problem in Hilbert space. Under suitable conditions, some strong convergence theorems are obtained. Our results improve and extend the corresponding results in (Chang et al. (2009, Min and Chang (2012, Plubtieng and Punpaeng (2007, S. Takahashi and W. Takahashi (2007, Tada and Takahashi (2007, Gang and Changsong (2009, Ying (2013, Y. Yao and J. C. Yao (2007, and Yong-Cho and Kang (2012.

  19. Six New Record Species of Whiteflies (Hemiptera: Aleyrodidae) Infesting Morus alba in China

    Science.gov (United States)

    Wang, Ji-Rui; Song, Zao-Qin; Du, Yu-Zhou

    2014-01-01

    Abstract To determine the species of whiteflies occurring on mulberry, Morus alba L. (Rosales: Moraceae) in China, we collected samples in more than 87 sites in 16 provinces of China from 2008 to 2011. In total, 10 species, representing seven genera of the subfamily Aleyrodinae, were identified. Of these, six species are newly recorded on mulberry in China, namely, Aleuroclava ficicola Takahashi, Aleuroclava gordoniae (Takahashi), Aleurotrachelus camelliae (Kuwana), Bemisia afer (Priesner & Hosny), Bemisia tabaci Gennadius, and Pealius machili Takahashi. Information on the taxonomy, distribution, and host plants of the whitefly species found on mulberry in China, along with a brief description and illustrations of each species are provided. PMID:25368095

  20. Low Blood Sodium in Older Adults: A Concern?

    Science.gov (United States)

    ... sodium in older adults: A concern? Why is low blood sodium a health concern for older adults? ... treated? Answers from Paul Y. Takahashi, M.D. Low blood sodium (hyponatremia) occurs when you have an ...

  1. Consistent method of truncating the electron self-energy in nonperturbative QED

    International Nuclear Information System (INIS)

    Rembiesa, P.

    1986-01-01

    A nonperturbative method of solving the Dyson-Schwinger equations for the fermion propagator is considered. The solution satisfies the Ward-Takahashi identity, allows multiplicative regularization, and exhibits a physical-mass pole

  2. Genetics Home Reference: cerebral autosomal recessive arteriopathy with subcortical infarcts and leukoencephalopathy

    Science.gov (United States)

    ... Miyashita A, Yokoseki A, Kawata H, Koyama A, Arima K, Takahashi T, Ikeda M, Shiota H, Tamura ... Oide T, Nakayama H, Yanagawa S, Ito N, Ikeda S, Arima K. Extensive loss of arterial medial smooth muscle ...

  3. Acanthaleyrodes elevatus sp. n. (Hemiptera: Aleyrodidae) from India, with key to species and discussion of tuberculate setae.

    Science.gov (United States)

    Dubey, Anil Kumar; Singh, Sudhir; Martin, Jon H

    2014-11-03

    The genus Acanthaleyrodes Takahashi is reported for the first time from India. Acanthaleyrodes elevatus sp. n. is described from Bridelia retusa in Kerala, India, with a key to puparia of Acanthaleydes species. The new species differs in its exceptionally elevated eighth abdominal tergite, circular vasiform orifice and eight pairs of subdorsal setae. The generic characteristics of Acanthaleyrodes are redefined and distinguished from those of Tuberaleyrodes Takahashi. A. styraci Takahashi is re-described in detail with illustrations of puparia and immatures from Hong Kong. A lectotype puparium is designated for A. callicarpae Takahashi. The development of tuberculate setae is discussed, in whitefly puparia and earlier nymphal instars, and considered to be subject to environmental modification.

  4. The Effects of Stress on Levels of Nicotine in the Rat

    Science.gov (United States)

    1990-03-01

    nicotine (Benowitz & Jacob, 1985; Feyerabend & Russell, 1978; Fix, Daughton & Issenberg, 1986; Matsukura, Sakamoto, Takahashi, Matsuyama...circulating levels of nicotine ( Feyerabend & Russell, 1978; Rosenberg, Benowitz, Jacob & Wilson, 1980). These studies suggest that acidification of

  5. CHAPTER ONE

    African Journals Online (AJOL)

    Science

    2013-04-03

    cultured rice plants. Plant Soil 148:107-113. Ma JF, Takahashi E (2002). Soil, Fertilizer, and Plant Silicon Research in Japan. Elsevier Science, Amsterdam. Ma JF, Yamaji N (2006). Silicon uptake and accumulation in higher plants ...

  6. Genetics Home Reference: ring chromosome 20 syndrome

    Science.gov (United States)

    ... drugs. Prolonged seizure episodes known as non-convulsive status epilepticus also appear to be characteristic of ring chromosome ... K, Takahashi Y. Ring chromosome 20 and nonconvulsive status epilepticus. A new epileptic syndrome. Brain. 1997 Jun;120 ( ...

  7. First Spectroscopic Identification of Pyrocarbonate for High CO2 Flux Membranes Containing Highly Interconnected Three Dimensional Ionic Channels

    Science.gov (United States)

    2013-01-01

    Koura, S. Kohara , K. Takeuchi, S. Takahashi, L. A. Curtiss, M. Grimsditch and M.-L. Saboungi, J. Mol. Struct., 1996, 382, 163–169. 49 L.-J. Chen, X...Cheng, C.-J. Lin and C.-M. Huang, Electrochim. Acta, 2002, 47, 1475–1480. 50 S. Kohara , N. Koura, Y. Idemoto, S. Takahashi, M.-L. Saboungi and L. A

  8. Stemcell Information: SKIP000139 [SKIP Stemcell Database[Archive

    Lifescience Database Archive (English)

    Full Text Available es Unknown ... Masayo Takahashi 高橋 政代 Riken Center for Developmental Biology (Riken CDB) 理研発生再生科学総合研究センター ...(理研CDB) Riken Center for Developmental Biology (Riken CDB) 理研発生再生科学総合研究センター (理研CDB) Masayo Takahashi 高橋 政代 N

  9. Stemcell Information: SKIP000143 [SKIP Stemcell Database[Archive

    Lifescience Database Archive (English)

    Full Text Available ... Yes 46XY ... Masayo Takahashi 高橋 政代 Riken Center for Developmental Biology 理研発生再生科学総合研究センター (理研CDB) Ri...ken Center for Developmental Biology 理研発生再生科学総合研究センター (理研CDB) Masayo Takahashi 高橋 政代 Available RIKEN BioReso

  10. Stemcell Information: SKIP000137 [SKIP Stemcell Database[Archive

    Lifescience Database Archive (English)

    Full Text Available nknown ... Masayo Takahashi 高橋 政代 Riken Center for Developmental Biology (Riken CDB) 理研発生再生科学総合研究センター (理研C...DB) Riken Center for Developmental Biology (Riken CDB) 理研発生再生科学総合研究センター (理研CDB) Masayo Takahashi 高橋 政代 Not A

  11. Mealybugs (Hemiptera: Coccomorpha: Pseudococcidae) attacking Hibiscus rosa-sinensis L. in Malaysia, with two new country records

    Science.gov (United States)

    Sartiami, Dewi; Watson, Gillian W.; Mohamad Roff, M. N.; Idris, A. B.

    2016-11-01

    A survey of mealybugs (Hemiptera: Coccomorpha: Pseudococcidae) attacking the national flower of Malaysia, Hibiscus rosa-sisnensis L. and Hibiscus spp. (Malvaceae) was conducted in Selangor and Kuala Lumpur, Malaysia, from January to March 2016. Adult females were mounted on microscope slides in Canada balsam. The five species identified were Ferrisia dasylirii (Cockerell), Maconellicoccus hirsutus (Green), Paracoccus marginatus Williams and Granara de Willink, Phenacoccus solenopsis (Tinsley) and Pseudococcus jackbeardsleyi Gimpel & Miller. Two of these, the invasive species Ferrisia dasylirii and P. solenopsis were introduced and first recorded in Malaysia.

  12. Data on the scale insect (Hemiptera: Coccomorpha) fauna of Greece, with description of two new species.

    Science.gov (United States)

    Szita, Éva; Fetykó, Kinga Gabriela; Benedicty, Zsuzsanna Konczné; Kozár, Ferenc; Partsinevelos, Georgios; Milonas, Panagiotis; Kaydan, Mehmet Bora

    2017-10-09

    Surveys of the scale insect (Hemiptera: Coccomorpha) fauna of Greece were carried out in 2013 and 2014. Altogether 93 scale insect species were collected, belonging to 11 families. Thirty-eight species (41%) proved to be new to the Greek fauna, including two species new to science (Anophococcus hellenicus Kaydan & Szita sp. n. (Acanthococcidae) and Iberococcus attikus Szita & Fetykó sp. n. (Pseudococcidae)), and two introduced invasive species (Phenacoccus graminicola Leonardi and Pseudococcus comstocki (Kuwana), both Pseudococcidae). The rest of the species seem to be native to the Greek fauna. The total number of scale insect species recorded from Greece is increased to 253.

  13. Scale insects (Hemiptera: Coccomorpha) on sugarcane in Colombia, with description of a new species of Tillancoccus Ben-Dov (Coccidae).

    Science.gov (United States)

    Caballero, Alejandro; Ramos-Portilla, Andrea Amalia; Kondo, Takumasa

    2017-05-02

    Herein we describe a new species, Tillancoccus koreguajae Caballero & Ramos, sp. n. (Hemiptera: Coccidae) from Colombia collected on sugarcane. Pinnaspis strachani (Cooley) is also recorded on sugarcane for the first time worldwide. An updated list of seven species of Coccomorpha on sugarcane in Colombia is provided, including information on its distribution, biology, and mutualistic ants for each species. Seven species of scale insects (Hemiptera: Coccomorpha) have been recorded previously on sugarcane, Saccharum officinarum L. (Poaceae) in Colombia: Pseudococcidae: Dysmicoccus boninsis (Kuwana), D. brevipes (Cockerell), Pseudococcus calceolariae (Maskell), Saccharicoccus sacchari (Cockerell); Coccidae: Pulvinaria elongata Newstead; Diaspididae: Duplachionaspis divergens (Green) and Serenaspis minima (Maskell). However, the record of S. minima in Colombia is considered doubtful as there are no voucher specimens from Colombia and because the distribution of this species is currently limited to the Australasian region. Pseudococcus calceolariae is present in Colombia but its record on sugarcane is also doubtful. A taxonomic key for the identification of scale insects on sugarcane in Colombia is provided.

  14. Charge and magnetic moment of the neutrino in the background field method and in the linear RξL gauge

    International Nuclear Information System (INIS)

    Cabral-Rosetti, L.G.; Bernabeu, J.; Vidal, J.

    2000-01-01

    We present a computation of the charge and the magnetic moment of the neutrino in the recently developed electro-weak background field method and in the linear R ξ L gauge. First, we deduce a formal Ward-Takahashi identity which implies the immediate cancellation of the neutrino electric charge. This Ward-Takahashi identity is as simple as that for QED. The computation of the (proper and improper) one loop vertex diagrams contributing to the neutrino electric charge is also presented in an arbitrary gauge, checking in this way the Ward-Takahashi identity previously obtained. Finally, the calculation of the magnetic moment of the neutrino, in the minimal extension of the standard model with massive Dirac neutrinos, is presented, showing its gauge parameter and gauge structure independence explicitly. (orig.)

  15. Comparison in Schemes for Simulating Depositional Growth of Ice Crystal between Theoretical and Laboratory Data

    Science.gov (United States)

    Zhai, Guoqing; Li, Xiaofan

    2015-04-01

    The Bergeron-Findeisen process has been simulated using the parameterization scheme for the depositional growth of ice crystal with the temperature-dependent theoretically predicted parameters in the past decades. Recently, Westbrook and Heymsfield (2011) calculated these parameters using the laboratory data from Takahashi and Fukuta (1988) and Takahashi et al. (1991) and found significant differences between the two parameter sets. There are two schemes that parameterize the depositional growth of ice crystal: Hsie et al. (1980), Krueger et al. (1995) and Zeng et al. (2008). In this study, we conducted three pairs of sensitivity experiments using three parameterization schemes and the two parameter sets. The pre-summer torrential rainfall event is chosen as the simulated rainfall case in this study. The analysis of root-mean-squared difference and correlation coefficient between the simulation and observation of surface rain rate shows that the experiment with the Krueger scheme and the Takahashi laboratory-derived parameters produces the best rain-rate simulation. The mean simulated rain rates are higher than the mean observational rain rate. The calculations of 5-day and model domain mean rain rates reveal that the three schemes with Takahashi laboratory-derived parameters tend to reduce the mean rain rate. The Krueger scheme together with the Takahashi laboratory-derived parameters generate the closest mean rain rate to the mean observational rain rate. The decrease in the mean rain rate caused by the Takahashi laboratory-derived parameters in the experiment with the Krueger scheme is associated with the reductions in the mean net condensation and the mean hydrometeor loss. These reductions correspond to the suppressed mean infrared radiative cooling due to the enhanced cloud ice and snow in the upper troposphere.

  16. PDF provisoire Publié le 27 Mai 2010 Cas clinique, volume 5, Issue ...

    African Journals Online (AJOL)

    raoul

    27 mai 2010 ... Hoshi K, Ohta M, Kanemura E, Koganei K, Takahashi M, Kito F, Fukushima T. A case of ileal duplication presenting with bloody stools. J Japan Soc Coloproctol. 2002(55): 43-46. 10. Holcomb GW 3rd, A Gheissari JA, O´Neill Jr, NA Shorter, HC Bishop. Surgical management of alimentary tract duplications.

  17. The DARPA High-Performance Polymer Program. Volume 2. Appendix--Selected Presentation Material From the Program Review Held on 14-15 January 1992

    Science.gov (United States)

    1992-09-01

    Deex Zero Corp. August 3 Frank Allan EM Industries, Hawthorne, NY August 17 Dr. Kazutami Sakamoto Ajinomoto Co., Teaneck, NJ August 25 Dr. David Casasent...Sakamoto Ajinomoto , Teaneck, NJ Dr. K. Yamada Dr. T. Takahashi June 14 Dr. Hundi P. Kamath Raychem Corp., Menlo Park, CA Dr. Stephen Moore Dr. Phil

  18. Chiral symmetry in the path-integral approach

    International Nuclear Information System (INIS)

    Schaposnik, F.A.

    1987-01-01

    The derivation of anomalous Ward-Takahashi identities related to chiral symmetries in the path-integral framework is presented. Some two-dimensional models in both abelian and non-abelian cases are discussed. The quantization of such theories using Weyl fermions is also presented. (L.C.) [pt

  19. Effect of a Hypocretin/Orexin Antagonist on Neurocognitive Performance

    Science.gov (United States)

    2012-09-01

    infantile febrile seizures), epilepsy, or brain infection caused by meningitis, encephalitis, or any other infectious agent. 7.) Systemic illness...not including infantile febrile seizures), epilepsy, or brain infection caused by meningitis, encephalitis, or any other infectious agent. 7...hyperalgesic effects of intrathecally- administered orexins in diabetic neuropathic pain model rats. Brain Res 1044: 76–86. 17. Mobarakeh JI, Takahashi K

  20. BOOK MANAGERS CHOICE BOOKS RECEIVED

    African Journals Online (AJOL)

    The receipt of these books is acknowledged, and this listing must be regarded as sufficient return for the courtesy of the sender. Books that appear to be of particular interest will be reviewed as space permits. The SAMJ does not publish unsolicited reviews. ABO-incompatible Kidney Transplantation... By Kota. Takahashi.

  1. A quasiclassical trajectory analysis of stereodynamics of the H + FCl ...

    Indian Academy of Sciences (India)

    Abstract. The chemical stereodynamics for the title reaction are studied by the quasiclassical trajectory method. Employing the recent works of Deskevich, Hayes, Takahashi, Skodje, and Nesbitt (DHTSN) potential energy surface of the ground 12A′ electronic state, the present work calculates the polarization- dependent ...

  2. Understanding metal–insulator transition in sodium tungsten bronze

    Indian Academy of Sciences (India)

    , A Chakraborty, D D Sarma, P Mahadevan, S. Oishi, W H McCarroll and M Greenblatt, Phys. Rev. B 75, 155116 (2007). [17] S Raj, A Chakraborty, D Choudhury, T Sato, T Takahashi, P Mahadevan, J Fujii, I Vobornik and D D Sarma, Phys. Rev.

  3. Quantum field theory on higher-genus Riemann surfaces

    International Nuclear Information System (INIS)

    Kubo, Reijiro; Yoshii, Hisahiro; Ojima, Shuichi; Paul, S.K.

    1989-07-01

    Quantum field theory for b-c systems is formulated on Riemann surfaces with arbitrary genus. We make use of the formalism recently developed by Krichever and Novikov. Hamiltonian is defined properly, and the Ward-Takahashi identities are derived on higher-genus Riemann surfaces. (author)

  4. An Estimation of the Potential of Carbon Fiber Reinforced Thermoplastics for Car Weight Reduction

    Science.gov (United States)

    2011-11-01

    Murayama1, Kazuro Kageyama1, Keiichi Nagata1, Tsuyoshi Matsuo1 and Jun Takahashi1 1The University of Tokyo * 7-3-1 Hongo , Bunkyo City, Tokyo 113-8656...ORGANIZATION NAME(S) AND ADDRESS(ES) The University of Tokyo 7-3-1 Hongo , Bunkyo City, Tokyo 113-8656, Japan 8. PERFORMING ORGANIZATION REPORT NUMBER

  5. Proof of the Feasibility of Coherent and Incoherent Schemes for Pumping a Gamma-Ray Laser

    Science.gov (United States)

    1988-01-01

    device has been well characterized, 10,11 and its outputV Gose rate has been calibrated with an accuracy of z: 3%. After irradia- A- lion, t-he samples...Takahashi, Nature, 305, 198 (1983). 4. H. Beer and R. A. Ward, Nature, 291, 308 (1981). 5. E. Runte, W. D. Schmidt-Ott, W. Eschner, I. Rosner, R. Kirchner, 0

  6. 77 FR 41406 - Evaluation of In Vitro Tests for Identifying Eye Injury Hazard Potential of Chemicals and...

    Science.gov (United States)

    2012-07-13

    ...://www.epa.gov/oppad001/eye-irritation.pdf ). The IRE test is an organotypic test method that evaluates... rabbit corneal epithelial cells following test substance exposure (Takahashi et al., 2008). NICEATM is..., mailing address, phone, fax, email, and sponsoring organization, as applicable). NICEATM prefers that data...

  7. Comment on 'Hawking radiation from fluctuating black holes'

    NARCIS (Netherlands)

    Khavkine, I.

    2010-01-01

    Takahashi and Soda (2010 Class. Quantum Grav. 27 175008) have recently considered the effect (at lowest non-trivial order) of dynamical, quantized gravitational fluctuations on the spectrum of scalar Hawking radiation from a collapsing Schwarzschild black hole. However, due to an unfortunate choice

  8. Crystal structure of raw pure Mysore silk fibre based on (Ala-Gly)2 ...

    Indian Academy of Sciences (India)

    Unknown

    2005-03-23

    Mar 23, 2005 ... at sites 1′ and 2′ by the 2-fold screw symmetry, respec- tively. ..... Demura M, Minami M, Asakura T and Cross T A 1998 Structure of Bombyx more ... A34 3–11. Spek A L 2003 Single-Crystal structure validation with the pro- ... Takahashi Y, Gehoh M and Yuzuriha K 1999 Structure refinement and diffuse ...

  9. Surface Excrescence Transition Study Delivery Order 0053

    Science.gov (United States)

    2009-04-01

    located near the town of Hyuga). The facility was constructed on a former MAGLEV testing track owned by Railway Technical Research Institute of Japan 6...12pp) 6. Takahashi, K., ―The outline of MLU002N on Miyazaki test track,‖ Int. Conf. on Speedup Technology for Railway and MAGLEV Vehicles vol 1 pp

  10. Digital Games and Language Teaching and Learning

    Science.gov (United States)

    Sykes, Julie M.

    2018-01-01

    The digital gaming industry has captured the public's attention worldwide and in the United States alone, the video game industry is predicted to increase by 30% from 2010 to 2019, reaching $19.6 billion in revenue (Takahashi, 2015, n.p.). Not surprisingly, digital gameplay is also rapidly expanding in educational domains. Although researchers…

  11. Stemcell Information: SKIP000136 [SKIP Stemcell Database[Archive

    Lifescience Database Archive (English)

    Full Text Available iology (Riken CDB) 理研発生再生科学総合研究センター (理研CDB) Masayo Takahashi 高橋 政代 Not Available Riken BRC 理研BRC http://www.brc.riken.jp/lab/cell/english/patient_specific_ips.shtml ...

  12. Stemcell Information: SKIP000135 [SKIP Stemcell Database[Archive

    Lifescience Database Archive (English)

    Full Text Available iology (Riken CDB) 理研発生再生科学総合研究センター (理研CDB) Masayo Takahashi 高橋 政代 Not Available Riken BRC 理研BRC http://www.brc.riken.jp/lab/cell/english/patient_specific_ips.shtml ...

  13. Spectral ansatz in quantum electrodynamics

    International Nuclear Information System (INIS)

    Atkinson, D.; Slim, H.A.

    1979-01-01

    An ansatz of Delbourgo and Salam for the spectral representation of the vertex function in quantum electrodynamics. The Ward-Takahashi identity is respected, and the electron propagator does not have a ghost. The infra-red and ultraviolet behaviours of the electron propagator in this theory are considered, and a rigorous existence theorem for the propagator in the Yennie gauge is presented

  14. ORIGINAL ARTICLE 210

    African Journals Online (AJOL)

    boaz

    Sayed MA, Mohamoud EC and Abouelall AA. Mycoflora and natural occurrence of mycotoxin in meat of imported bulls, poultry and some meat product. Assaults Vet Med. J. 2000; 43(86):188-200. 6. Takahashi-Ando M, Ohsata S, Shibata T,. Hamamaoto H, Yamagunich I and Kimura. M. Metabolism of zearaleone genetically.

  15. Belousov Zhabotinsky Autonomic Hydrogel Composites: Regulating Waves via Asymmetry (Postprint)

    Science.gov (United States)

    2016-09-23

    Zhabotinsky (BZ)‐gelatin composites by synchronicity. Adv. Funct. Mater. 23, 2835–2842 (2013). 6. R. Yoshida, T. Takahashi, T. Yamaguchi , H. Ichijo, Self...2014). 12. R. Yoshida, M. Tanaka, S. Onodera, T. Yamaguchi , E. Kokufuta, In-phase synchronization of chemical and mechanical oscillations in self

  16. The U.S.-Japan Security Relationship After the Cold War

    Science.gov (United States)

    1993-01-01

    Section, Overseas Research Department of JETRO 2. Hideya Kurata, research fellow, Japan Institute of International Affairs 3. Keiji Kobayashi , senior...pp. 184-193. Nishimura, Shigeki, "Senryaku tenkan no sessoku o haisu," Voice, September 1992, pp. 94-105. Biblography 103 Nobuaki , Takahashi

  17. Stemcell Information: SKIP000134 [SKIP Stemcell Database[Archive

    Lifescience Database Archive (English)

    Full Text Available human basic FGF ... Yes Unknown ... Masayo Takahashi 高橋 政代 Riken Center for Developmental Biology... (Riken CDB) 理研発生再生科学総合研究センター (理研CDB) Riken Center for Developmental Biology

  18. methanolic extract of tetracera potatoria, an antiulcer agent

    African Journals Online (AJOL)

    Daniel Owu

    Determination of gastric mucus secretion. Gastric mucus secretion was estimated using the earlier ... Determination of superoxide dismutase activity. The assay method involves the inhibition of autooxidation of .... similar to that of known drugs such as sucralfate and misoprostol (Slomiany et al, 1991, Takahashi and. Okabe ...

  19. A two-medium thermal neutron spectrum programme

    International Nuclear Information System (INIS)

    Bindon, D.C.

    1960-07-01

    A computer programme is described for computing the thermal neutron spectra and effective cross-sections in a reactor system of two media by the method of H. Takahashi. The programme has been prepared and tested for use with the Ferranti Mercury computer. (author)

  20. Metadata: JPST000052 [jPOST repository metadata[Archive

    Lifescience Database Archive (English)

    Full Text Available induced pluripotent stem cell proteome analysis by one-shot nano LC-MS/MS with meter-scale monolithic silic...-shot NanoLC-MS/MS analysis with meter-scale monolithic silica columns. J Proteome Res. 2013 Jan 4;12(1):214-21 Yasushi Ishihama Takahashi Chisato Kyoto university

  1. Turneri auhind määramisel / Maria-Kristiina Soomre

    Index Scriptorium Estoniae

    Soomre, Maria-Kristiina, 1978-

    2000-01-01

    Londoni Tate Britainis avatud Turneri auhinna nominentide - Glenn Brown, Wolfgang Tillmans, Michael Raedecker, Tomoko Takahashi - näitusest ja struckistide "Tõelise Turneri auhinna näitusest" Pure Gallerys, kus eksponeeritakse rühmituse liikmete kunstimaailma jõustruktuure kritiseerivaid teoseid

  2. Stemcell Information: SKIP000172 [SKIP Stemcell Database[Archive

    Lifescience Database Archive (English)

    Full Text Available 12-03-417881 Induced pluripotent stem cells from CINCA syndrome patients as a model for dissecting somatic mosaicism and drug discove...ry Tanaka T, Takahashi K, Yamane M, Tomida S, Nakamura S, Oshima K, Niwa A, Nishiko

  3. Appearance of Neotoxoptera formosana (Homoptera: Aphididae) in The Netherlands

    NARCIS (Netherlands)

    Piron, P.G.M.

    2010-01-01

    Neotoxoptera formosana (Takahashi) is a pest of wild and cultivated Allium species, but never iwht disastrous consequences. In 1984, N. formosana was found in France. This was the first finding in Europe. Since then, N. formosana has been observed also in other European countries. The first record

  4. Reliability Evaluation of Monolithic Vertical Wall Breakwaters Considering Impulsive Wave Breaking Forces and Failure Modes of the Foundation

    DEFF Research Database (Denmark)

    Burcharth, H. F.; Sørensen, Jørgen S.; Christiani, E.

    1994-01-01

    Impulsive wave breaking forces on a vertical caisson breakwater has been included by Takahashi et al, (1994) in Goda's wave pressure formula (Goda et al. 1972 and Goda 1974). Based on these formulae a deterministic design method following the Japanese recommendations has been used for the design...

  5. JBSC_42_3_0509_0521_SI.docx

    Indian Academy of Sciences (India)

    Gerardo Santos López

    ), I580 (E2), L938 (NS2), A962 (NS2), non A1176 (NS3), non A 1647 (NS4), R2774 (NS5B), Direct sequencing, Chi-squared test, Fisher exact probability test, Mann-Whitney U test, Japan. Takahashi et al. 2001, 1b, 15 patients with HCC + ...

  6. Reference: 61 [Arabidopsis Phenome Database[Archive

    Lifescience Database Archive (English)

    Full Text Available 03 Dec The Plant cell Kadota Akeo|Kagawa Takatoshi|Kanegae Takeshi|Kasahara Masahiro|Kiyosue Tomohiro|Niwa Yasuo|Oikawa Kazusato|Suetsugu Noriyuki|Takahashi Fumio|Wada Masamitsu ...ls. Chloroplast unusual positioning1 is essential for proper chloroplast positioning. 12 2805-15 14615600 20

  7. Browse Title Index

    African Journals Online (AJOL)

    Items 451 - 488 of 488 ... Vol 10, No 3 (2013), Video-assisted thoracoscopic double lobectomy for bronchiectasis: A case report and literature review, Abstract. T Takahashi, T Okazaki, T Doi, H Koga, K Suzuki, GJ Lane, A Yamataka. Vol 8, No 1 (2011), Vulnerability of children to gunshot trauma in violence-prone environment: ...

  8. Galilean invariance and homogeneous anisotropic randomly stirred flows

    International Nuclear Information System (INIS)

    Berera, Arjun; Hochberg, David

    2005-01-01

    The Ward-Takahashi identities for incompressible flow implied by Galilean invariance are derived for the randomly forced Navier-Stokes equation, in which both the mean and fluctuating velocity components are explicitly present. The consequences of the Galilean invariance for the vertex renormalization are drawn from this identity

  9. 2-acetamido-2-deoxy-α-D-galactopyranoside antigen–lectin

    Indian Academy of Sciences (India)

    WINTEC

    After 3 h, Amberlite IR-120 (H+) resin was added to the reaction mixture, filtered and .... neutralized with Amberlite IR-120 resin (H+ form), filtered and the filtrate concentrated in vacuo. The resulting solid was ..... (a) Springer G F 1984 Science 224 1198; (b) Itzko- witz S H, Yuan M, Montgomery C K, Kjeldsen T,. Takahashi ...

  10. Three new species of mealybug (Hemiptera, Coccomorpha, Pseudococcidae) on persimmon fruit trees (Diospyros kaki) in southern Brazil.

    Science.gov (United States)

    Pacheco da Silva, Vitor C; Kaydan, Mehmet Bora; Germain, Jean-François; Malausa, Thibaut; Botton, Marcos

    2016-01-01

    Brazil has the greatest insect diversity in the world; however, little is known about its scale insect species (Hemiptera: Coccomorpha). Mealybugs (Pseudococcidae) have been found in at least 50% of persimmon orchards Diospyros kaki L. in the southern part of the country. In this study three new mealybug species on persimmon trees located in the Serra Gaúcha Region, RS, Brazil, namely, Anisococcus granarae Pacheco da Silva & Kaydan, sp. n., Ferrisia kaki Kaydan & Pacheco da Silva, sp. n. and Pseudococcus rosangelae Pacheco da Silva & Kaydan, sp. n. are described. In addition, an identification key for the genera occurring on fruit orchards and vineyards in Brazil is provided, together with illustrations and molecular data for the new species.

  11. Effectiveness of electron irradiation as a quarantine treatment of cut flowers

    International Nuclear Information System (INIS)

    Hayashi, T.; Todoriki, S.; Nakakita, H.; Dohino, T.; Tanabe, K.

    1999-01-01

    The effects of electron beams on spider mite (Tetranychus urticae) and flour beetle (Tribolium freemani) were slightly smaller than those of gamma-rays. 'Soft-electrons' (low-energy electrons) at an energy of 170 keV inactivated eggs, larvae, pupae, and adults of the flour beetle. Electron beams at doses up to 400 Gy killed or sterilized all the pests for cut flowers tested; spider mite (Tetranychus urticae), mealybug (Pseudococcus comstocki), leaf miner (Liriomyza trifolii), thrips (Thrips palmi, Thrips tabaci), cutworm (Spodoptera litura), and aphid (Myzus persicae). Carnation, alstromeria, gladiolus, tulip, statice, stock, dendrobium, prairie gentian, oncidium, campanula, gloriosa, fern, gypsophila, freesia, lobelia, triteleia, and gerbera were resistant to radiation, while chrysanthemum, rose, lily, calla, antherium, sweet pea, and iris were sensitive. Radiation-induced deterioration of chrysanthemum could be prevented by post-irradiation treatment with commercial preservative solutions or sugar solutions. (author)

  12. Irradiation for Surface Insects Disinfestation of Mangosteen for Exportation

    International Nuclear Information System (INIS)

    Kongratarpon, Titima; Limohpasmanee, Wanitch; Vongcheeree, Satit; Segsarnviriya, Suchada; Pransopon, Prapon

    2005-10-01

    Mangosteen fruits (Garcinia mangostana Linn.) were investigated for the surface insects at under caps, skin and stem. Samples from Nakhonsithammarat and Chantaburi province were taken. Common quarantine pests such as citrus mealy bug (Pseudococcus cryptus), Orientalscale (Aonidiella orientallis), red tea mite (Oligpnychus coffee) and broad mite (Polyphagotarsonemus latus) were found at 48.23, 26.67, 75.29 and 26.67% respectively. Effect of gamma radiation on the quarantine pests were studied. The result showed that the P. cryptus and A. orientallis were more radiosensititive than other (LD99=913.05 and 848.09 Gy). The dose for inhibiting disinfestations of O. coffee and P. latus were 1,662.77 and 2,271.97 Gy (at the dose of LD99)

  13. The viscosity of the refrigerant 1,1-difluoroethane along the saturation line

    Science.gov (United States)

    van der Gulik, P. S.

    1993-07-01

    The viscosity coefficient of the refrigerant R152a (1,1-difluoroethane) has been measured along the saturation line both in the saturated liquid and in the saturated vapor. The data have been obtained every 10 K from 243 up to 393 K by means of a vibrating-wire viscometer using the free damped oscillation method. The density along the saturation line was calculated from the equation of state given by Tamatsu et al. with application of the saturated vapor-pressure correlation given by Higashi et al. An interesting result is that in the neighborhood of the critical point, the kinematic viscosity of the saturated liquid seems to coincide with that of the saturated vapor. The results for the saturated liquid are in satisfying agreement with those of Kumagai and Takahashi and of Phillips and Murphy. A comparison of the saturatedvaport data with the unsaturated-vapor data of Takahashi et al. shows some discrepancies.

  14. Quantum master equation for QED in exact renormalization group

    International Nuclear Information System (INIS)

    Igarashi, Yuji; Itoh, Katsumi; Sonoda, Hidenori

    2007-01-01

    Recently, one of us (H. S.) gave an explicit form of the Ward-Takahashi identity for the Wilson action of QED. We first rederive the identity using a functional method. The identity makes it possible to realize the gauge symmetry even in the presence of a momentum cutoff. In the cutoff dependent realization, the nilpotency of the BRS transformation is lost. Using the Batalin-Vilkovisky formalism, we extend the Wilson action by including the antifield contributions. Then, the Ward-Takahashi identity for the Wilson action is lifted to a quantum master equation, and the modified BRS transformation regains nilpotency. We also obtain a flow equation for the extended Wilson action. (author)

  15. Effect of a steam foot spa on geriatric inpatients with cognitive impairment: a pilot study

    OpenAIRE

    Koike Y; Kondo H; Kondo S; Takagi M; Kano Y

    2013-01-01

    Yoshihisa Koike,1 Hideki Kondo,2 Satoshi Kondo,1 Masayuki Takagi,1 Yoshio Kano31Department of Occupational Therapy, Prefectural University of Hiroshima, Mihara, Japan; 2Yoshiigawa Hospital, Okayama, Japan; 3Department of Occupational Therapy, Kibi International University, Takahashi, JapanPurpose: To investigate whether a steam foot spa improves cognitive impairment in geriatric inpatients.Methods: Geriatric inpatients with cognitive impairment were given a steam foot spa treatment at 42&...

  16. Program and Abstracts of the Society for Research on Biological Rhythms (2nd) Held in Jacksonville, Florida on 9-13 May 1990

    Science.gov (United States)

    1991-07-15

    York State Joseph S. Takahashi. Department of Biochemistry , Psychiatric Institute, New York, "Nestle Research Molecular Biology and Cell Biology, and...Foundation, Ontario, Dept. of Psychiatry. Stanford University School of Medicine, Dept. of 15:30-17:30 Room 4 & 5 Clinical Biochemistry , University of...University of Michigan, Dept. of Uniformed Services University of Health Sciences, Kinesiology , Ann Arbor, Mi. ard School of Life and Health Sciences

  17. Meeting of the Society for Research on Biological Rhythms (2nd) Held in Jacksonville, Florida on 9-13 May 1990. Programs and Abstracts

    Science.gov (United States)

    1993-04-30

    Kelly E. Mayo. and Eye Clinic, Zurich, Switzerland, *New York State Joseph S. Takahashi. Department of Biochemistry . Psychiatric Institute, New York...30 Room 4 & 5 Clinical Biochemistry , University of Toronto. Slide Session 4 Molecular and Cellular Studies of 17:00 Circadian Rhythmicity 31 CYCLIC AMP...College, Dept. of Anatomy, MI and The University of Michigan, Dept. of Uniformed Services University of Health Sciences, Kinesiology , Ann Arbor, MI. and

  18. Matsubara-Fradkin thermodynamical quantization of Podolsky electrodynamics

    International Nuclear Information System (INIS)

    Bonin, C. A.; Pimentel, B. M.

    2011-01-01

    In this work, we apply the Matsubara-Fradkin formalism and the Nakanishi's auxiliary field method to the quantization of the Podolsky electrodynamics in thermodynamic equilibrium. This approach allows us to write consistently the path integral representation for the partition function of gauge theories in a simple manner. Furthermore, we find the Dyson-Schwinger-Fradkin equations and the Ward-Fradkin-Takahashi identities for the Podolsky theory. We also write the most general form for the polarization tensor in thermodynamic equilibrium.

  19. Sexual Problems among Japanese Women: Data from an Online Helpline

    Directory of Open Access Journals (Sweden)

    Yumi Ozaki, MD, PhD

    2015-12-01

    Conclusion: Sexual aversion was the most common sexual problem among Japanese women who sought help via the online helpline. Family structure was related to sexual problems. More detailed assessments of family structure may be important in better identifying the triggering causes of the reported sexual problems. Ozaki Y, Nagao K, Saigo R, Tai T, Tanaka N, Kobayashi H, Nakajima K, and Takahashi Y. Sexual problems among Japanese women: Data from an online helpline. Sex Med 2015;3:289–295.

  20. The covariant consistent quantization of bosonized chiral Schwinger model

    International Nuclear Information System (INIS)

    Myung, Y.S.

    1988-01-01

    From Ward-Takahashi identifies and full propagators, the authors obtain a massive Proca field U/sub μ/ which has the positive norm state. There also exists a massless physical scalar field H which turns out to be the positive norm state only for 4e/sup 2/ > 1. It is further shown that a dipole ghost field D and auxiliary field B, as quartet members, belong to the zero norm states

  1. Gauge theories

    International Nuclear Information System (INIS)

    Lee, B.W.

    1976-01-01

    Some introductory remarks to Yang-Mills fields are given and the problem of the Coulomb gauge is considered. The perturbation expansion for quantized gauge theories is discussed and a survey of renormalization schemes is made. The role of Ward-Takahashi identities in gauge theories is discussed. The author then discusses the renormalization of pure gauge theories and theories with spontaneously broken symmetry. (B.R.H.)

  2. Imaging of pulmonary emphysema: A pictorial review

    OpenAIRE

    Takahashi, Masashi

    2008-01-01

    Masashi Takahashi1, Junya Fukuoka2, Norihisa Nitta1, Ryutaro Takazakura1, Yukihiro Nagatani1, Yoko Murakami1, Hideji Otani1, Kiyoshi Murata11Department of Radiology, Shiga University of Medical Science, Shiga, Japan; 2Laboratory of Pathology, Toyama University Hospital, Toyama, JapanAbstract: The term ‘emphysema’ is generally used in a morphological sense, and therefore imaging modalities have an important role in diagnosing this disease. In particular, high resolution com...

  3. Perceived parental affectionless control is associated with high neuroticism

    OpenAIRE

    Takahashi,Nana; Suzuki,Akihito; Matsumoto,Yoshihiko; Shirata,Toshinori; Otani,Koichi

    2017-01-01

    Nana Takahashi, Akihito Suzuki, Yoshihiko Matsumoto, Toshinori Shirata, Koichi Otani Department of Psychiatry, Yamagata University School of Medicine, Yamagata, Japan Objective: Depressed patients are prone to perceive that they were exposed to affectionless control by parents. Meanwhile, high neuroticism is a well-established risk factor for developing depression. Therefore, this study examined whether perceived parental affectionless control is associated with high neuroticism.Methods: Th...

  4. Behavior of supersymmetry at finite temperature

    International Nuclear Information System (INIS)

    Midorikawa, Shoichi.

    1984-11-01

    Supersymmetry breaking at finite temperature is investigated by using the real-time formalism. We derive the Ward-Takahashi identities of the composite fields by using the path integral formalism. We also calculate the one-loop correction to fermion and boson masses, and discuss the connection of the perturbative result with that obtained from the effective potential. Our result shows that supersymmetry is broken explicitly even in the real-time formalism. (author)

  5. Relationship between balance and physical activity measured by an activity monitor in elderly COPD patients

    OpenAIRE

    Iwakura, Masahiro; Okura, Kazuki; Shibata, Kazuyuki; Kawagoshi, Atsuyoshi; Sugawara, Keiyu; Takahashi, Hitomi; Shioya, Takanobu

    2016-01-01

    Masahiro Iwakura,1,2 Kazuki Okura,2 Kazuyuki Shibata,1,2 Atsuyoshi Kawagoshi,2 Keiyu Sugawara,2 Hitomi Takahashi,2 Takanobu Shioya1 1Department of Rehabilitation, Akita City Hospital, 2Department of Physical Therapy, Akita University Graduate School of Health Sciences, Akita, Japan Background: Little is known regarding the relationship between balance impairments and physical activity in COPD. There has been no study investigating the relationship between balance and objectively measured ph...

  6. Quantum field theory on higher-genus Riemann surfaces, 2

    International Nuclear Information System (INIS)

    Kubo, Reijiro; Ojima, Shuichi.

    1990-08-01

    Quantum field theory for closed bosonic string systems is formulated on arbitrary higher-genus Riemann surfaces in global operator formalism. Canonical commutation relations between bosonic string field X μ and their conjugate momenta P ν are derived in the framework of conventional quantum field theory. Problems arising in quantizing bosonic systems are considered in detail. Applying the method exploited in the preceding paper we calculate Ward-Takahashi identities. (author)

  7. Stemcell Information: SKIP000138 [SKIP Stemcell Database[Archive

    Lifescience Database Archive (English)

    Full Text Available 代 Riken Center for Developmental Biology (Riken CDB) 理研発生再生科学総合研究センター (理研CDB) Riken Center for Developmental... Biology (Riken CDB) 理研発生再生科学総合研究センター (理研CDB) Masayo Takahashi 高橋 政代 Available Ri

  8. Visual-Haptic Integration: Cue Weights are Varied Appropriately, to Account for Changes in Haptic Reliability Introduced by Using a Tool

    OpenAIRE

    Chie Takahashi; Simon J Watt

    2011-01-01

    Tools such as pliers systematically change the relationship between an object's size and the hand opening required to grasp it. Previous work suggests the brain takes this into account, integrating visual and haptic size information that refers to the same object, independent of the similarity of the ‘raw’ visual and haptic signals (Takahashi et al., VSS 2009). Variations in tool geometry also affect the reliability (precision) of haptic size estimates, however, because they alter the change ...

  9. Canonical ward identities in generalized QCD

    International Nuclear Information System (INIS)

    Li Ziping

    1995-01-01

    The canonical Ward identities for a system with singular higher-order Lagrangian are derived and some application to the generalized QCD are given. The new relations of the Ward identities for gauge ghost field proper vertices are obtained which differ from the usual Ward-Takahashi identities arising from BRS invariance. The expressions for PCAC and generalized PCAC of AVV vertices are also obtained

  10. The Role of the Omental Microenvironment in Ovarian Cancer Metastatic Colonization

    Science.gov (United States)

    2010-08-01

    Archives 26: 36. 6. Recklinghausen F (1863) Uber Eiter und Bindegewebskorperchen. Virchow’s Archives 28: 40. 7. Hagiwara A, Takahashi T, Sawai K...1570 18. Nakanishi M, Hamazaki TS, Komazaki S et al (2007) Pancreatic tissue formation from murine embryonic stem cells in vitro. Differentiation 75(1):1...cells. Br J Cancer 89(2):374–384 32. Recklinghausen FTv (1863) Uber Eiter und Bindegewebskor- perchen. Virchow’s Arch 28:157–197 33. Recklinghausen FTv

  11. Quark model with chiral-symmetry breaking and confinement in the Covariant Spectator Theory

    Energy Technology Data Exchange (ETDEWEB)

    Biernat, Elmer P. [CFTP, Instituto Superior Técnico, Universidade de Lisboa, 1049-001 Lisboa, Portugal; Pena, Maria Teresa [CFTP, Instituto Superior Técnico, Universidade de Lisboa, 1049-001 Lisboa, Portugal; Departamento de Física, Instituto Superior Técnico, Universidade de Lisboa, 1049-001 Lisboa, Portugal; Ribiero, Jose' Emilio F. [CeFEMA, Instituto Superior Técnico, Universidade de Lisboa, 1049-001 Lisboa, Portugal; Stadler, Alfred [Departamento de Física, Universidade de Évora, 7000-671 Évora, Portugal; Gross, Franz L. [Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)

    2016-03-01

    We propose a model for the quark-antiquark interaction in Minkowski space using the Covariant Spectator Theory. We show that with an equal-weighted scalar-pseudoscalar structure for the confining part of our interaction kernel the axial-vector Ward-Takahashi identity is preserved and our model complies with the Adler-zero constraint for pi-pi-scattering imposed by chiral symmetry.

  12. The Battle for Leyte Gulf. October 1944. Strategical and Tactical Analysis. Volume II. Operations from 0719 October 17th until October 20th (D- Day)

    Science.gov (United States)

    1955-01-01

    DESDIV’s 41, 61 Rear Admiral Kimura , Susumu CL YA{AGI (F) Captain Yoshimura, Matake DESDIV 4 Captain Takahashi, Kameshiro DD’s MICHISHIO (F),** NOWAKI...Captain Miura, Hayao DESRON 1 Rear Admiral Kimura , Masatomi CL ABUKUMA (FF) Captain Hanada, Takuo DESDIV 7 Commander Iwagami, Jiichi DD’s AKEBONO (F...USHIO DESDIV 18 Captain Inoue, Yoshio DD’s KASUMI, SHIRANUHI (F) DESDIV 21 Commander I~hii, Hisashi DD’s WAKABA (F), HATSUSHIMO, HATSUHARU CRUDIV -76

  13. Plasmid profiles and antibiotic susceptibility patterns of Staphylococcus aureus isolates from Nigeria.

    Science.gov (United States)

    Olukoya, D K; Asielue, J O; Olasupo, N A; Ikea, J K

    1995-06-01

    In an investigation into the problems of infections due to Staphylococcus aureus in Nigeria, 100 strains were isolated from various hospitals in Lagos. The strains were screened for the presence of plasmids and for susceptibility to antimicrobial agents. Plasmids were extracted by modification of the method of Takahashi and Nagono[1]. The plasmids were diverse in nature. The strains were found to be highly resistant to commonly prescribed antibiotics.

  14. Life and water

    International Nuclear Information System (INIS)

    Rosu, H.

    1992-08-01

    Many living organisms on Earth are strongly dependent on water, the natural liquid of the planet. A possible reason for that could be the conjecture of Ryoji Takahashi that water microdrops release negenetropy through a phase transition to a phase with zero surface tension. Biological cells could make use of such a phase transition in their duty cycle. We comment on the relative merit of this conjecture, and present it in wider theoretical context. (author). 10 refs

  15. On the short distance behavior of string theories

    International Nuclear Information System (INIS)

    Guida, R.; Konishi, K.; Provero, P.

    1991-01-01

    Short distance behavior of string theories is investigated by the use of the discretized path-integral formulation. In particular, the minimum physical length and the generalized uncertainty relation are re-derived from a set of Ward-Takahashi identities. In this paper several issues related to the form of the generalized uncertainty relation and to its implications are discussed. A consistent qualitative picture of short distance behavior of string theory seems to emerge from such a study

  16. Supersymmetric field theories at finite temperature

    International Nuclear Information System (INIS)

    Dicus, D.A.; Tata, X.R.

    1983-01-01

    We show by explicit calculations to second and third order in perturbation theory, that finite temperature effects do not break the supersymmetry Ward-Takahashi identities of the Wess-Zumino model. Moreover, it is argued that this result is true to all orders in perturbation theory, and further, true for a wide class of supersymmetric theories. We point out, however, that these identities can be broken in the course of a phase transition that restores an originally broken internal symmetry

  17. Rapid Isolation and Detection for RNA Biomarkers for TBI Diagnostics

    Science.gov (United States)

    2015-10-01

    cervical adenocarcinoma) were obtained. • Primers were designed and tested for brain-specific mRNA targets: FABP, GFAP, NSE, MBP, S100B...Both of these values are generally painful to compute by hand, but trivial to evaluate in MATLAB once the data matrix is established in the tool...RNA from blood, plasma, and other samples. 100%/12 cal mos Tsukasa Takahashi Graduate student researcher/Staff Research Associate – helped obtain

  18. Condensed phase QM/MM simulations utilizing the exchange core functions to describe exchange repulsions at the QM boundary region

    International Nuclear Information System (INIS)

    Umino, Satoru; Takahashi, Hideaki; Morita, Akihiro

    2016-01-01

    In a recent work, we developed a method [H. Takahashi et al., J. Chem. Phys. 143, 084104 (2015)] referred to as exchange-core function (ECF) approach, to compute exchange repulsion E ex between solute and solvent in the framework of the quantum mechanical (QM)/molecular mechanical (MM) method. The ECF, represented with a Slater function, plays an essential role in determining E ex on the basis of the overlap model. In the work of Takahashi et al. [J. Chem. Phys. 143, 084104 (2015)], it was demonstrated that our approach is successful in computing the hydrogen bond energies of minimal QM/MM systems including a cationic QM solute. We provide in this paper the extension of the ECF approach to the free energy calculation in condensed phase QM/MM systems by combining the ECF and the QM/MM-ER approach [H. Takahashi et al., J. Chem. Phys. 121, 3989 (2004)]. By virtue of the theory of solutions in energy representation, the free energy contribution δμ ex from the exchange repulsion was naturally formulated. We found that the ECF approach in combination with QM/MM-ER gives a substantial improvement on the calculation of the hydration free energy of a hydronium ion. This can be attributed to the fact that the ECF reasonably realizes the contraction of the electron density of the cation due to the deficit of an electron.

  19. Condensed phase QM/MM simulations utilizing the exchange core functions to describe exchange repulsions at the QM boundary region

    Energy Technology Data Exchange (ETDEWEB)

    Umino, Satoru; Takahashi, Hideaki, E-mail: hideaki@m.tohoku.ac.jp; Morita, Akihiro [Department of Chemistry, Graduate School of Science, Tohoku University, Sendai, Miyagi 980-8578 (Japan)

    2016-08-28

    In a recent work, we developed a method [H. Takahashi et al., J. Chem. Phys. 143, 084104 (2015)] referred to as exchange-core function (ECF) approach, to compute exchange repulsion E{sub ex} between solute and solvent in the framework of the quantum mechanical (QM)/molecular mechanical (MM) method. The ECF, represented with a Slater function, plays an essential role in determining E{sub ex} on the basis of the overlap model. In the work of Takahashi et al. [J. Chem. Phys. 143, 084104 (2015)], it was demonstrated that our approach is successful in computing the hydrogen bond energies of minimal QM/MM systems including a cationic QM solute. We provide in this paper the extension of the ECF approach to the free energy calculation in condensed phase QM/MM systems by combining the ECF and the QM/MM-ER approach [H. Takahashi et al., J. Chem. Phys. 121, 3989 (2004)]. By virtue of the theory of solutions in energy representation, the free energy contribution δμ{sub ex} from the exchange repulsion was naturally formulated. We found that the ECF approach in combination with QM/MM-ER gives a substantial improvement on the calculation of the hydration free energy of a hydronium ion. This can be attributed to the fact that the ECF reasonably realizes the contraction of the electron density of the cation due to the deficit of an electron.

  20. Fungus-insect gall of Phlebopus portentosus.

    Science.gov (United States)

    Zhang, Chun-Xia; He, Ming-Xia; Cao, Yang; Liu, Jing; Gao, Feng; Wang, Wen-Bing; Ji, Kai-Ping; Shao, Shi-Cheng; Wang, Yun

    2015-01-01

    Phlebopus portentosus is a popular edible wild mushroom found in the tropical Yunnan, China, and northern Thailand. In its natural habitats, a gall often has been found on some plant roots, around which fungal fruiting bodies are produced. The galls are different from common insect galls in that their cavity walls are not made from plant tissue but rather from the hyphae of P. portentosus. Therefore we have termed this phenomenon "fungus-insect gall". Thus far six root mealy bug species in the family Pseudococcidae that form fungus-insect galls with P. portentosus have been identified: Formicococcus polysperes, Geococcus satellitum, Planococcus minor, Pseudococcus cryptus, Paraputo banzigeri and Rastrococcus invadens. Fungus-insect galls were found on the roots of more than 21 plant species, including Delonix regia, Citrus maxima, Coffea arabica and Artocarpus heterophyllus. Greenhouse inoculation trials showed that fungus-insect galls were found on the roots of A. heterophyllus 1 mo after inoculation. The galls were subglobose to globose, fulvous when young and became dark brown at maturation. Each gall harbored one or more mealy bugs and had a chimney-like vent for ventilation and access to the gall. The cavity wall had three layers. Various shaped mealy bug wax deposits were found inside the wall. Fungal hyphae invaded the epidermis of plant roots and sometimes even the cortical cells during the late stage of gall development. The identity of the fungus inside the cavity was confirmed by molecular methods. © 2015 by The Mycological Society of America.

  1. With or without pheromone habituation: possible differences between insect orders?

    Science.gov (United States)

    Suckling, David Maxwell; Stringer, Lloyd D; Jiménez-Pérez, Alfredo; Walter, Gimme H; Sullivan, Nicola; El-Sayed, Ashraf M

    2018-06-01

    Habituation to sex pheromones is one of the key mechanisms in mating disruption, an insect control tactic. Male moths often show reduced sexual response after pre-exposure to female sex pheromone. Mating disruption is relatively rare in insect orders other than Lepidoptera. As a positive control we confirmed habituation in a moth (Epiphyas postvittana) using 24 h pre-exposure to sex pheromone to reduce subsequent activation behaviour. We then tested the impact of pre-exposure to sex or trail pheromone on subsequent behavioural response with insects from three other orders. Similar pre-exposure for 24 h to either sex pheromone [Pseudococcus calceolariae (Homoptera) and apple leaf curling midge Dasineura mali (Diptera), or trail pheromone of Argentine ants (Linepithema humile (Hymenoptera)], followed by behavioural assay in clean air provided no evidence of habituation after pre-exposure in these latter cases. The moths alone were affected by pre-exposure to pheromone. For pests without habituation, sustained attraction to a point source may make lure and kill more economical. Improved knowledge of behavioural processes should lead to better success in pest management and mechanisms should be investigated further to inform studies and practical efforts generally enhancing effectiveness of pheromone-based management. © 2017 Society of Chemical Industry. © 2017 Society of Chemical Industry.

  2. Formation of very short pulse by neutron spin flip chopper for J-PARC

    International Nuclear Information System (INIS)

    Ebisawa, T.; Soyama, K.; Yamazaki, D.; Tasaki, S.; Sakai, K.; Oku, T.; Maruyama, R.; Hino, M.

    2004-01-01

    We have developed neutron spin flip choppers with high S/N ratio and high intensity for pulsed sources using multi-stage spin flip choppers. It is not easy for us to obtain a very short neutron pulse less than 10 μs using a spin flip chopper, due to the time constant L/R in the normal LR circuit. We will discuss a method obtaining a very short neutron pulse applying the modified push-pull circuit proposed by Ito and Takahashi [4] to the double spin flip chopper with polarizing guides

  3. Contribution of mesoscale processes to nutrient budgets in the Arabian Sea

    Digital Repository Service at National Institute of Oceanography (India)

    Resplandy, L; Levy, M.; Madec, G.; Pous, S.; Aumont, O.; DileepKumar, M.

    Contribution of mesoscale processes to nutrient1 budgets in the Arabian Sea2 L. Resplandy, 1 M. L´evy, 1 G. Madec, 1,2 S. Pous, 1 O. Aumont, 3 D. Kumar 4 L. Resplandy, LOCEAN, UPMC, BC100, 4 place Jussieu, F-75252 Paris cedex 05, France. (lrlod... is constant and set to 122/16 [Takahashi et al., 1985]. To ensure positive values, biogeo-141 chemical tracers are advected with the positive Monotone Upstream-centered Schemes for142 Conservation Laws [Van Leer, 1979; L´evy et al., 2001] and dissipated along...

  4. Molecular Basis of Circadian Photoreception

    Science.gov (United States)

    2006-06-30

    267, 16237-16243. Murakami, D.M., Miller, J.D., Fuller, C.A., 1989. The retinohypothalamic tract in the cat: retinal ganglion cell morphology and...Photochem Photobiol B 13, 5-17. Pickard, G.E., 1980. Morphological characteristics of retinal ganglion cells projecting to the suprachiasmatic nucleus: a...from archaea to humans. Annu Rev Cell Dev Biol 16, 365-392. Takahashi, J.S., DeCoursey, P.J., Bauman, L., Menaker, M., 1984. Spectral sensitivity

  5. Experimental Melting Study of Basalt-Peridotite Hybrid Source: Melting model of Hawaiian plume

    Science.gov (United States)

    Takahashi, E.; Gao, S.

    2015-12-01

    Eclogite component entrained in ascending plume is considered to be essentially important in producing flood basalts (e.g., Columbia River basalt, Takahashi et al., 1998 EPSL), alkalic OIBs (e.g., Kogiso et al.,2003), ferro-picrites (Tuff et al.,2005) and Hawaiian shield lavas (e.g., Hauri, 1996; Takahashi & Nakajima, 2002, Sobolev et al.,2005). Size of the entrained eclogite, which controls the reaction rates with ambient peridotite, however, is very difficult to constrain using geophysical observation. Among Hawaiian shield volcanoes, Koolau is the most enriched end-member in eclogite component (Frey et al, 1994). Reconstruction of Koolau volcano based on submarine study on Nuuanu landslide (AGU Monograph vol.128, 2002, Takahashi Garcia Lipman eds.) revealed that silica-rich tholeiite appeared only at the last stage (Makapuu stage) of Koolau volcano. Chemical compositions of lavas as well as isotopes change abruptly and coherently across a horizon (Shinozaki et al. and Tanaka et al. ibid.). Based on these observation, Takahashi & Nakajima (2002 ibid) proposed that the Makapuu stage lava in Koolau volcano was supplied from a single large eclogite block. In order to study melting process in Hawaiian plume, high-pressure melting experiments were carried out under dry and hydrous conditions with layered eclogite/peridotite starting materials. Detail of our experiments will be given by Gao et al (2015 AGU). Combined previous field observation with new set of experiments, we propose that variation in SiO2 among Hawaiian tholeiites represent varying degree of wall-rock interaction between eclogite and ambient peridotite. Makapuu stage lavas in Koolau volcano represents eclogite partial melts formed at ~3 GPa with various amount of xenocrystic olivines derived from Pacific plate. In other words, we propose that "primary magma" in the melting column of Hawaiian plume ranges from basaltic andesite to ferro-picrite depending on the lithology of the source. Solidus of

  6. Radioactive wastes processing and disposing container

    International Nuclear Information System (INIS)

    Wada, Jiro; Kato, Hiroaki.

    1987-01-01

    Purpose: To obtain a processing and disposing container at low level radioactive wastes, excellent in corrosion and water resistance, as well as impact shock resistance for the retrieval storage over a long period of time. Constitution: The container is constituted with sands and pebbles as aggregates and glass fiber-added unsaturated polyester resins as binders. The container may entirely be formed with such material or only the entire inner surface may be formed with the material as liners. A container having excellent resistance to water, chemicals, freezing or melting, whether impact shock, etc. can be obtained, thereby enabling retrieval storage for radioactive wastes at the optimum low level. (Takahashi, M.)

  7. Transcriptional autorepression of Msx1 gene is mediated by interactions of Msx1 protein with a multi-protein transcriptional complex containing TATA-binding protein, Sp1 and cAMP-response-element-binding protein-binding protein (CBP/p300).

    OpenAIRE

    Shetty, S; Takahashi, T; Matsui, H; Ayengar, R; Raghow, R

    1999-01-01

    The TATA-less murine Msx1 promoter contains two Msx1-binding motifs, located at -568 to -573 and +25 to +30, and is subject to potent autorepression [Takahashi, Guron, Shetty, Matsui and Raghow (1997) J. Biol. Chem. 272, 22667-22678]. To investigate the molecular mechanism by which Msx1 represses the activity of its own promoter, we transfected C2C12 myoblasts with Msx1-promoter-luciferase constructs and assessed reporter gene activity, with and without the exogenous expression of Msx1. We de...

  8. Mechanistic Studies of Metal-Oxo Cubane Catalysts for Lightweight Solar Fuels Storage

    Science.gov (United States)

    2013-03-01

    13692. 4 “ Single - crystal growth, crystal and electronic structure of NaCoO2.” Takahashi, Y.; Gotoh, Y.; Akimoto, J. J. Sol. State Chem. 2003, 172, 22...bond formation by the Co–OEC catalysts. 2. A penetrating study of Co3 +|Co4+ self-exchange kinetics of Co4O4 cubanes and a detailed understanding of...construct the artificial leaf described in (7). 4. The examination of Co2+| Co3 + self-exchange in a faithful structural molecular analog of the 7

  9. Endocrinological Responses to the Administration of Nicotine: Interactions with Drug Initiation, Conditioned Effects, and Conditions of Stress

    Science.gov (United States)

    1984-01-27

    of u r ina ry a l k a l i n a t i o n ; Becke t t , Rowland & Tr iggs , 1965; Beckett fi T r i g g s , 1967; Feyerabend fi Rus se l l , 1978...Matsukura, Sakamoto, Takahashi , Matsuyama fi Muranaka, 1979; Russel l fi Feyerabend , 1978). Nicot ine when a<aministered in low t o moderate doses in man...1975; Kumar, Cooke, Lader fi Russell, 1977; Russell, Wilson, Patel, Cole & Feyerabend , 1973; Schacditer, 1977). In addition, it should be noted

  10. Weak correction to the muon magnetic moment in a gauge model

    International Nuclear Information System (INIS)

    Darby, D.; Grammer, G. Jr.

    1976-01-01

    The weak correction, asub(μ)sup(W), to the anomalous magnetic moment of the muon is calculated in an SU(2) x U(1) x U(1) gauge model of weak and electromagnetic interactions. The Rsub(xi) gauge is used and Ward-Takahashi identities are utilized in eliminating all xi-dependence before the loop integration is performed. asub(μ)sup(W,expt) places no constraint on the mass of one of the neutral vector mesons, which may be arbitrarily small. (Auth.)

  11. Factorization properties and spurious solutions in N-body scattering theories

    International Nuclear Information System (INIS)

    Vanzani, V.

    1979-01-01

    The origin of spurious solutions in N-body scattering equations is discussed. It is shown that spurious solutions are expected because of specific factorization properties of the homogeneous equations. The equations proposed by Rosenberg, by Mitra, Gillespie, Sugar and Panchapakesan, by Takahashi and Mishima, by Alessandrini, by Sasakawa, by Sloan, Bencze and Redish, by Weinberg and van Winter and by Avishai are considered. It is explicitly shown that spurious multipliers arise from repeated employment of resolvent equations or, equiValently, from generalized iteration procedure

  12. Consolidation of Fe-N Magnets Using Equal Channel Angular Extrusion

    Science.gov (United States)

    2016-03-23

    rare-earth crisis ”, it is better and more scientifically sound in the long term to pursue this type of research and development. For instance...α’). Proc Roy Soc. 1951;A208:200. 2. Kim TK, Takahashi M. New magnetic material having ultrahigh magnetic- moment. Appl Phys Lett. 1972;20:492. 3...single-crystal films. J Appl Phys. 1991;70:5977. 4. Wallace WE, Huang MQ. Enhanced Fe moment in nitrogen martensite and Fe16N2. J Appl Phys. 1994;76

  13. A TBA approach to thermal transport in the XXZ Heisenberg model

    Science.gov (United States)

    Zotos, X.

    2017-10-01

    We show that the thermal Drude weight and magnetothermal coefficient of the 1D easy-plane Heisenberg model can be evaluated by an extension of the Bethe ansatz thermodynamics formulation by Takahashi and Suzuki (1972 Prog. Theor. Phys. 48 2187). They have earlier been obtained by the quantum transfer matrix method (Klümper 1999 Z. Phys. B 91 507). Furthermore, this approach can be applied to the study of the far-out of equilibrium energy current generated at the interface between two semi-infinite chains held at different temperatures.

  14. Electronic structure of superconducting Bi2212 crystal by angle resolved ultra violet photoemission

    International Nuclear Information System (INIS)

    Saini, N.L.; Shrivastava, P.; Garg, K.B.

    1993-01-01

    The electronic structure of a high quality superconducting Bi 2 Sr 2 CaCu 2 Osub(8+δ) (Bi2212) single crystal is studied by angle resolved ultra violet photoemission (ARUPS) using He I (21.2 eV). Our results appear to show two bands crossing the Fermi level in ΓX direction of the Brillouin zone as reported by Takahashi et al. The bands at higher binding energy do not show any appreciable dispersion. The nature of the states near the Fermi level is discussed and the observed band structure is compared with the band structure calculations. (author)

  15. Constraint on the QED vertex from the mass anomalous dimension γm = 1

    International Nuclear Information System (INIS)

    Bashir, A.; Pennington, M.R.

    1995-10-01

    We discuss the structure of the non-perturbative fermion-boson vertex in quenched QED. We show that it is possible to construct a vertex which not only ensures that the fermion propagator is multiplicatively renormalizable, obeys the appropriate Ward-Takahashi identity, reproduces perturbation theory for weak couplings and guarantees that the critical coupling at which the mass is dynamically generated is gauge independent but also makes sure that the value for the anomalous dimension for the mass function is strictly 1, as Holdom and Mahanta have proposed. (author). 8 refs

  16. Autocorrelation in queuing network type production systems - revisited

    DEFF Research Database (Denmark)

    Nielsen, Erland Hejn

    -production systems (Takahashi and Nakamura, 1998) establishes that autocorrelation plays definitely a non-negligible role in relation to the dimensioning as well as functioning of Kanban-controlled production flow lines . This must logically either imply that production managers are missing an important aspect...... in their production planning reasoning, or that the 'realistic' autocorrelation patterns , inherent in actual production setups , are not like those so far considered in the literature. In this paper, an attempt to characterise relevant and 'realistic' types of autocorrelation schemes as well as their levels...

  17. Rotational states in deformed nuclei: An analytic approach

    International Nuclear Information System (INIS)

    Bentz, W.; Arima, A.; Enders, J.; Wambach, J.; Richter, A.

    2011-01-01

    The consequences of the spontaneous breaking of rotational symmetry are investigated in a field theory model for deformed nuclei, based on simple separable interactions. The crucial role of the Ward-Takahashi identities in describing the rotational states is emphasized. We show explicitly how the rotor picture emerges from the isoscalar Goldstone modes and how the two-rotor model emerges from the isovector scissors modes. As an application of the formalism, we discuss the M1 sum rules in deformed nuclei and make the connection to empirical information.

  18. Application of a nonparametric approach to analyze delta-pCO2 data from the Southern Ocean

    CSIR Research Space (South Africa)

    Pretorius, WB

    2011-11-01

    Full Text Available NONPARAMETRIC APPROACH TO ANALYZE ?pCO2 DATA FROM THE SOUTHERN OCEAN Wesley B. Pretorius*1, Sonali Das2 and Paul J. Mostert1 *1 Cell: 0722897595, Department of Statistics and Actuarial Science, University of Stellenbosch, Private Bag X1, Matieland 7602...(9-10):1601-1622. Tans, P.P., Fung, I. Y. & Takahashi, T. 1990 Observational constraints on the global atmospheric CO2-budget. Science, 247:1431-1438. Telszewski, M., Chazottes, A., Schuster, U., Watson, A.J., Moulin, C., Bakker, D.C.E., Gonzalez-Davila, M...

  19. On finite capacity queueing systems with a general vacation policy

    Directory of Open Access Journals (Sweden)

    Jacqueline Loris-Teghem

    2000-01-01

    Full Text Available We consider a Poisson arrival queueing system with finite capacity and a general vacation policy as described in Loris-Teghem [Queueing Systems 3 (1988, 41-52]. From our previous results regarding the stationary queue length distributions immediately after a departure and at an arbitrary epoch, we derive a relation between both distributions which extends a result given in Frey and Takahashi [Operations Research Letters 21 (1997, 95-100] for the particular case of an exhaustive service multiple vacation policy.

  20. Renormalization of a distorted gauge: invariant theory

    International Nuclear Information System (INIS)

    Hsu, J.P.; Underwood, J.A.

    1976-02-01

    A new type of renormalizable theory involving massive Yang-Mills fields whose mass is generated by an intrinsic breakdown of the usual local gauge symmetry is considered. However, the Lagrangian has a distorted gauge symmetry which leads to the Ward-Takahashi (W-T) identities. Also, the theory is independent of the gauge parameter xi. An explicit renormalization at the oneloop level is completely carried out by exhibiting counter terms, defining the physical parameters and computing all renormalization constants to check the W-T identities

  1. Axial weak currents in the Wess-Zumino term

    International Nuclear Information System (INIS)

    Fujikawa, Kazuo.

    1985-03-01

    The conventional axial gauging of the Wess-Zumino term leads to the results which do not necessarily agree with the expectations on the basis of quark level Ward-Takahashi identities. This discrepancy arises from the fact that the quark level anomalous identities reflect the short distance structure of QCD, whereas the gauging of the Wess-Zumino term reflects the axial symmetry in the spontaneously broken chiral phase. The low energy theorem for axial weak fields is not sharply defined, in contrast to the case of vector fields where no such complications arise. (author)

  2. Monotone Hybrid Projection Algorithms for an Infinitely Countable Family of Lipschitz Generalized Asymptotically Quasi-Nonexpansive Mappings

    Directory of Open Access Journals (Sweden)

    Watcharaporn Cholamjiak

    2009-01-01

    Full Text Available We prove a weak convergence theorem of the modified Mann iteration process for a uniformly Lipschitzian and generalized asymptotically quasi-nonexpansive mapping in a uniformly convex Banach space. We also introduce two kinds of new monotone hybrid methods and obtain strong convergence theorems for an infinitely countable family of uniformly Lipschitzian and generalized asymptotically quasi-nonexpansive mappings in a Hilbert space. The results improve and extend the corresponding ones announced by Kim and Xu (2006 and Nakajo and Takahashi (2003.

  3. Nanogel-crosslinked nanoparticles increase the inhibitory effects of W9 synthetic peptide on bone loss in a murine bone resorption model

    OpenAIRE

    Sato, Toshimi; Alles, Neil; Khan, Masud; Nagano, Kenichi; Takahashi, Mariko; Tamura, Yukihiko; Shimoda, Asako; Ohya, Keiichi; Akiyoshi, Kazunari; Aoki, Kazuhiro

    2015-01-01

    Toshimi Sato,1 Neil Alles,1,2 Masud Khan,1,3 Kenichi Nagano,1,4 Mariko Takahashi,1 Yukihiko Tamura,1 Asako Shimoda,5,6 Keiichi Ohya,1 Kazunari Akiyoshi,5,6 Kazuhiro Aoki1 1Department of Bio-Matrix (Pharmacology), Graduate School, Tokyo Medical and Dental University, Tokyo, Japan; 2Department of Biochemistry, Faculty of Medicine, University of Peradeniya, Peradeniya, Sri Lanka; 3Department of Dental Pharmacology, City Dental College and Hospital, Dhaka, Bangladesh; 4Department of Oral Medicin...

  4. Exact solution of matricial Φ23 quantum field theory

    Science.gov (United States)

    Grosse, Harald; Sako, Akifumi; Wulkenhaar, Raimar

    2017-12-01

    We apply a recently developed method to exactly solve the Φ3 matrix model with covariance of a two-dimensional theory, also known as regularised Kontsevich model. Its correlation functions collectively describe graphs on a multi-punctured 2-sphere. We show how Ward-Takahashi identities and Schwinger-Dyson equations lead in a special large- N limit to integral equations that we solve exactly for all correlation functions. The solved model arises from noncommutative field theory in a special limit of strong deformation parameter. The limit defines ordinary 2D Schwinger functions which, however, do not satisfy reflection positivity.

  5. Ruthenium separation device from radioactive waste

    International Nuclear Information System (INIS)

    Ayabe, Osao.

    1988-01-01

    Purpose: To efficiently oxidize ruthenium in radioactive wastes and evaporize ruthenium tetraoxide after oxidization thereof, thereby improve the separation and recovery rate. Constitution: The device comprises an oxidization vessel for supplying an oxidizing agent into radioactive wastes to oxidize ruthenium in the wastes into ruthenium tetraoxide, and a distillation vessel for introducing radioactive wastes after oxidization, distillating under heating ruthenium tetraoxide leached into the wastes and evaporizing ruthenium tetraoxide. By dividing the device into the oxidizing vessel and the distillation vessel, the oxidizing treatment and the distilling treatment can individually be operated optimally to improve the separation and recovery rate of ruthenium. (Takahashi, M.)

  6. Dynamic structure mediates halophilic adaptation of a DNA polymerase from the deep-sea brines of the Red Sea

    KAUST Repository

    Takahashi, Masateru; Takahashi, Etsuko; Joudeh, Luay I.; Marini, Monica; Das, Gobind; Elshenawy, Mohamed; Akal, Anastassja; Sakashita, Kosuke; Alam, Intikhab; Tehseen, Muhammad; Sobhy, Mohamed Abdelmaboud; Stingl, Ulrich; Merzaban, Jasmeen; Di Fabrizio, Enzo M.; Hamdan, Samir

    2018-01-01

    The deep-sea brines of the Red Sea are remote and unexplored environments characterized by high temperatures, anoxic water, and elevated concentrations of salt and heavy metals. This environment provides a rare system to study the interplay between halophilic and thermophilic adaptation in biologic macromolecules. The present article reports the first DNA polymerase with halophilic and thermophilic features. Biochemical and structural analysis by Raman and circular dichroism spectroscopy showed that the charge distribution on the protein’s surface mediates the structural balance between stability for thermal adaptation and flexibility for counteracting the salt-induced rigid and nonfunctional hydrophobic packing. Salt bridge interactions via increased negative and positive charges contribute to structural stability. Salt tolerance, conversely, is mediated by a dynamic structure that becomes more fixed and functional with increasing salt concentration. We propose that repulsive forces among excess negative charges, in addition to a high percentage of negatively charged random coils, mediate this structural dynamism. This knowledge enabled us to engineer a halophilic version of KOD DNA polymerase.—Takahashi, M., Takahashi, E., Joudeh, L. I., Marini, M., Das, G., Elshenawy, M. M., Akal, A., Sakashita, K., Alam, I., Tehseen, M., Sobhy, M. A., Stingl, U., Merzaban, J. S., Di Fabrizio, E., Hamdan, S. M. Dynamic structure mediates halophilic adaptation of a DNA polymerase from the deep-sea brines of the Red Sea.

  7. Aging effect of spin accumulation in non-local spin valves

    International Nuclear Information System (INIS)

    Zhao, Bing; Zhang, Ziyu; Chen, Xiaobing; Zhang, Xiaohan; Pan, Jiahui; Ma, Jiajun; Li, Juan; Wang, Zhicheng; Wang, Le; Xu, Xiaoguang; Jiang, Yong

    2017-01-01

    Highlights: • First time to reveal the whole temporal evolution life of spintronics devices. • The gradual oxidation of the junctions’ areas and that of the channel are confirmed to be the predominant factors to determine the temporal evolution. • Physically, the temporal evolution can be evaluated by theories of S. Takahashi and A. Fert. • This study may offer some useful advice for the design and protection of future industrial spintronics devices. - Abstract: A temporal evolution of spin accumulation of Co/MgO/Ag spin valves have been studied by using the nonlocal spin detection technique over almost a 3-month period in the ambient environment after the fabrication of the devices. Three different stages of the spin accumulation are first observed due to aging effect. The aging effect comes from two contributions–the gradual oxidation of the Ag/MgO and MgO/Co interfaces at the junctions’ areas which arises from the annealing process and the oxidation of the side surfaces of the Ag channels. The theories of S. Takahashi and A. Fert are introduced to evaluate the different evolution stages of spin accumulation.

  8. Chiral symmetry and low energy pion-nucleon scattering

    International Nuclear Information System (INIS)

    Coon, S.A.

    1999-01-01

    In these lectures, I examine the effect of the meson factory πN data on the current algebra/PCAC program which describes chiral symmetry breaking in this system. After historical remarks on the current algebra/PCAC versus chiral Lagrangians approaches to chiral symmetry, and description of the need for πN amplitudes with virtual (off-mass-shell) pions in nuclear force models and other nuclear physics problems, I begin with kinematics and isospin aspects of the invariant amplitudes. A detailed introduction to the hadronic vector and axial-vector currents and the hypothesis of partially conserved axial-vector currents (PCAC) follows. I review and test against contemporary data the PCAC predictions of the Goldberger-Treiman relation, and the Adler consistency condition for a πN amplitude. Then comes a detailed description of the current algebra Ward-Takahashi identities in the chiral limit and a brief account of the on-shell current algebra Ward-Takahashi identities. The latter identities form the basis of so-called current algebra models of πN scattering. I then test these models against the contemporary empirical πN amplitudes extrapolated into the subthreshold region via dispersion relations. The scale and the t dependence of the 'sigma term' is determined by the recent data. (author)

  9. Dynamic structure mediates halophilic adaptation of a DNA polymerase from the deep-sea brines of the Red Sea.

    Science.gov (United States)

    Takahashi, Masateru; Takahashi, Etsuko; Joudeh, Luay I; Marini, Monica; Das, Gobind; Elshenawy, Mohamed M; Akal, Anastassja; Sakashita, Kosuke; Alam, Intikhab; Tehseen, Muhammad; Sobhy, Mohamed A; Stingl, Ulrich; Merzaban, Jasmeen S; Di Fabrizio, Enzo; Hamdan, Samir M

    2018-01-24

    The deep-sea brines of the Red Sea are remote and unexplored environments characterized by high temperatures, anoxic water, and elevated concentrations of salt and heavy metals. This environment provides a rare system to study the interplay between halophilic and thermophilic adaptation in biologic macromolecules. The present article reports the first DNA polymerase with halophilic and thermophilic features. Biochemical and structural analysis by Raman and circular dichroism spectroscopy showed that the charge distribution on the protein's surface mediates the structural balance between stability for thermal adaptation and flexibility for counteracting the salt-induced rigid and nonfunctional hydrophobic packing. Salt bridge interactions via increased negative and positive charges contribute to structural stability. Salt tolerance, conversely, is mediated by a dynamic structure that becomes more fixed and functional with increasing salt concentration. We propose that repulsive forces among excess negative charges, in addition to a high percentage of negatively charged random coils, mediate this structural dynamism. This knowledge enabled us to engineer a halophilic version of KOD DNA polymerase.-Takahashi, M., Takahashi, E., Joudeh, L. I., Marini, M., Das, G., Elshenawy, M. M., Akal, A., Sakashita, K., Alam, I., Tehseen, M., Sobhy, M. A., Stingl, U., Merzaban, J. S., Di Fabrizio, E., Hamdan, S. M. Dynamic structure mediates halophilic adaptation of a DNA polymerase from the deep-sea brines of the Red Sea.

  10. On whole Abelian model dynamics

    Energy Technology Data Exchange (ETDEWEB)

    Chauca, J.; Doria, R. [CBPF, Rio de Janeiro (Brazil); Aprendanet, Petropolis, 25600 (Brazil)

    2012-09-24

    Physics challenge is to determine the objects dynamics. However, there are two ways for deciphering the part. The first one is to search for the ultimate constituents; the second one is to understand its behaviour in whole terms. Therefore, the parts can be defined either from elementary constituents or as whole functions. Historically, science has been moving through the first aspect, however, quarks confinement and complexity are interrupting this usual approach. These relevant facts are supporting for a systemic vision be introduced. Our effort here is to study on the whole meaning through gauge theory. Consider a systemic dynamics oriented through the U(1) - systemic gauge parameter which function is to collect a fields set {l_brace}A{sub {mu}I}{r_brace}. Derive the corresponding whole gauge invariant Lagrangian, equations of motion, Bianchi identities, Noether relationships, charges and Ward-Takahashi equations. Whole Lorentz force and BRST symmetry are also studied. These expressions bring new interpretations further than the usual abelian model. They are generating a systemic system governed by 2N+ 10 classical equations plus Ward-Takahashi identities. A whole dynamics based on the notions of directive and circumstance is producing a set determinism where the parts dynamics are inserted in the whole evolution. A dynamics based on state, collective and individual equations with a systemic interdependence.

  11. Penguin-like diagrams from the standard model

    International Nuclear Information System (INIS)

    Ping, Chia Swee

    2015-01-01

    The Standard Model is highly successful in describing the interactions of leptons and quarks. There are, however, rare processes that involve higher order effects in electroweak interactions. One specific class of processes is the penguin-like diagram. Such class of diagrams involves the neutral change of quark flavours accompanied by the emission of a gluon (gluon penguin), a photon (photon penguin), a gluon and a photon (gluon-photon penguin), a Z-boson (Z penguin), or a Higgs-boson (Higgs penguin). Such diagrams do not arise at the tree level in the Standard Model. They are, however, induced by one-loop effects. In this paper, we present an exact calculation of the penguin diagram vertices in the ‘tHooft-Feynman gauge. Renormalization of the vertex is effected by a prescription by Chia and Chong which gives an expression for the counter term identical to that obtained by employing Ward-Takahashi identity. The on-shell vertex functions for the penguin diagram vertices are obtained. The various penguin diagram vertex functions are related to one another via Ward-Takahashi identity. From these, a set of relations is obtained connecting the vertex form factors of various penguin diagrams. Explicit expressions for the gluon-photon penguin vertex form factors are obtained, and their contributions to the flavor changing processes estimated

  12. Penguin-like diagrams from the standard model

    Energy Technology Data Exchange (ETDEWEB)

    Ping, Chia Swee [High Impact Research, University of Malaya, 50603 Kuala Lumpur (Malaysia)

    2015-04-24

    The Standard Model is highly successful in describing the interactions of leptons and quarks. There are, however, rare processes that involve higher order effects in electroweak interactions. One specific class of processes is the penguin-like diagram. Such class of diagrams involves the neutral change of quark flavours accompanied by the emission of a gluon (gluon penguin), a photon (photon penguin), a gluon and a photon (gluon-photon penguin), a Z-boson (Z penguin), or a Higgs-boson (Higgs penguin). Such diagrams do not arise at the tree level in the Standard Model. They are, however, induced by one-loop effects. In this paper, we present an exact calculation of the penguin diagram vertices in the ‘tHooft-Feynman gauge. Renormalization of the vertex is effected by a prescription by Chia and Chong which gives an expression for the counter term identical to that obtained by employing Ward-Takahashi identity. The on-shell vertex functions for the penguin diagram vertices are obtained. The various penguin diagram vertex functions are related to one another via Ward-Takahashi identity. From these, a set of relations is obtained connecting the vertex form factors of various penguin diagrams. Explicit expressions for the gluon-photon penguin vertex form factors are obtained, and their contributions to the flavor changing processes estimated.

  13. Dynamic structure mediates halophilic adaptation of a DNA polymerase from the deep-sea brines of the Red Sea

    KAUST Repository

    Takahashi, Masateru

    2018-01-24

    The deep-sea brines of the Red Sea are remote and unexplored environments characterized by high temperatures, anoxic water, and elevated concentrations of salt and heavy metals. This environment provides a rare system to study the interplay between halophilic and thermophilic adaptation in biologic macromolecules. The present article reports the first DNA polymerase with halophilic and thermophilic features. Biochemical and structural analysis by Raman and circular dichroism spectroscopy showed that the charge distribution on the protein’s surface mediates the structural balance between stability for thermal adaptation and flexibility for counteracting the salt-induced rigid and nonfunctional hydrophobic packing. Salt bridge interactions via increased negative and positive charges contribute to structural stability. Salt tolerance, conversely, is mediated by a dynamic structure that becomes more fixed and functional with increasing salt concentration. We propose that repulsive forces among excess negative charges, in addition to a high percentage of negatively charged random coils, mediate this structural dynamism. This knowledge enabled us to engineer a halophilic version of KOD DNA polymerase.—Takahashi, M., Takahashi, E., Joudeh, L. I., Marini, M., Das, G., Elshenawy, M. M., Akal, A., Sakashita, K., Alam, I., Tehseen, M., Sobhy, M. A., Stingl, U., Merzaban, J. S., Di Fabrizio, E., Hamdan, S. M. Dynamic structure mediates halophilic adaptation of a DNA polymerase from the deep-sea brines of the Red Sea.

  14. Aging effect of spin accumulation in non-local spin valves

    Energy Technology Data Exchange (ETDEWEB)

    Zhao, Bing; Zhang, Ziyu; Chen, Xiaobing; Zhang, Xiaohan; Pan, Jiahui; Ma, Jiajun; Li, Juan; Wang, Zhicheng [State Key Laboratory for Advanced Metals and Materials, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083 (China); Wang, Le, E-mail: wangle@ruc.edu.cn [Department of Physics, Renmin University of China, Beijing 100872 (China); Xu, Xiaoguang, E-mail: xgxu@ustb.edu.cn [State Key Laboratory for Advanced Metals and Materials, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083 (China); Jiang, Yong [State Key Laboratory for Advanced Metals and Materials, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083 (China)

    2017-06-15

    Highlights: • First time to reveal the whole temporal evolution life of spintronics devices. • The gradual oxidation of the junctions’ areas and that of the channel are confirmed to be the predominant factors to determine the temporal evolution. • Physically, the temporal evolution can be evaluated by theories of S. Takahashi and A. Fert. • This study may offer some useful advice for the design and protection of future industrial spintronics devices. - Abstract: A temporal evolution of spin accumulation of Co/MgO/Ag spin valves have been studied by using the nonlocal spin detection technique over almost a 3-month period in the ambient environment after the fabrication of the devices. Three different stages of the spin accumulation are first observed due to aging effect. The aging effect comes from two contributions–the gradual oxidation of the Ag/MgO and MgO/Co interfaces at the junctions’ areas which arises from the annealing process and the oxidation of the side surfaces of the Ag channels. The theories of S. Takahashi and A. Fert are introduced to evaluate the different evolution stages of spin accumulation.

  15. Co-operation of the transcription factor hepatocyte nuclear factor-4 with Sp1 or Sp3 leads to transcriptional activation of the human haem oxygenase-1 gene promoter in a hepatoma cell line.

    Science.gov (United States)

    Takahashi, Shigeru; Matsuura, Naomi; Kurokawa, Takako; Takahashi, Yuji; Miura, Takashi

    2002-11-01

    We reported previously that the 5'-flanking region (nucleotides -1976 to -1655) of the human haem oxygenase-1 ( hHO-1 ) gene enhances hHO-1 promoter activity in human hepatoma HepG2 cells, but not in HeLa cells [Takahashi, Takahashi, Ito, Nagano, Shibahara and Miura (1999) Biochim. Biophys. Acta 1447, 231-235]. To define more precisely the regulatory elements involved, in the present study we have functionally dissected this region and localized the enhancer to a 50 bp fragment (-1793 to -1744). Site-direct mutagenesis analysis revealed that two regions were responsible for this enhancer activity, i.e. a hepatocyte nuclear factor-4 (HNF-4) homologous region and a GC box motif homologous region. Mutation in either region alone moderately decreased enhancer activity. However, mutations in both regions reduced promoter activity to the basal level. Electrophoretic mobility-shift assays demonstrated that the P5-2 fragment (-1793 to -1744) interacted with at least two nuclear factors, i.e. HNF-4 and Sp1/Sp3. Co-transfection experiments using Drosophila SL2 cells revealed that HNF-4 and Sp1/Sp3 synergistically stimulated the enhancer activity of the P5-2 fragment. These results indicate that co-operation of HNF-4 with Sp1 or Sp3 leads to the activation of hHO-1 gene expression in hepatoma cells.

  16. Λ and Σ well depth

    International Nuclear Information System (INIS)

    Satoh, Eiji

    1982-01-01

    The Λ well depth was calculated by taking into account the effect of the ΛΣ conversion. Takahashi et al. obtained the separate type of potentials which described the hyperon-nucleon interaction up to p waves. Two types of the potentials among several types they obtained were used to calculate the Λ well depth. The G matrix was easily calculated, and the Λ well depth was obtained by integrating the G matrix in momentum space up to the Fermi surface. The effect of the ΛΣ conversion was given by an equation. The total Λ well depth was estimated to be 9.13 MeV and 49.36 MeV for each type of potential, respectively. It was concluded that the argument by Bodmer et al. was not correct. The Σ well depth was also calculated using the potential obtained by Takahashi et al. for I = 1/2 and the one obtained by Σ + p → Σ + p scattering data for I = 3/2. The obtained value 35.30 MeV may be overestimated, and the experimental value is expected to be in the range from 20 MeV to 30 MeV. (Ito, K.)

  17. Realization of chiral symmetry in the ERG

    International Nuclear Information System (INIS)

    Echigo, Yoshio; Igarashi, Yuji

    2011-01-01

    We discuss within the framework of the ERG how chiral symmetry is realized in a linear σ model. A generalized Ginsparg-Wilson relation is obtained from the Ward-Takahashi identities for the Wilson action assumed to be bilinear in the Dirac fields. We construct a family of its non-perturbative solutions. The family generates the most general solutions to the Ward-Takahashi identities. Some special solutions are discussed. For each solution in this family, chiral symmetry is realized in such a way that a change in the Wilson action under non-linear symmetry transformation is canceled with a change in the functional measure. We discuss that the family of solutions reduces via a field redefinition to a family of the Wilson actions with some composite object of the scalar fields which has a simple transformation property. For this family, chiral symmetry is linearly realized with a continuum analog of the operator extension of γ 5 used on the lattice. We also show that there exist some appropriate Dirac fields which obey the standard chiral transformations with γ 5 in contrast to the lattice case. Their Yukawa interaction with scalars, however, becomes non-linear. (author)

  18. Itinerant ferromagnetism in actinide 5 f -electron systems: Phenomenological analysis with spin fluctuation theory

    Science.gov (United States)

    Tateiwa, Naoyuki; Pospíšil, Jiří; Haga, Yoshinori; Sakai, Hironori; Matsuda, Tatsuma D.; Yamamoto, Etsuji

    2017-07-01

    We have carried out an analysis of magnetic data in 69 uranium, 7 neptunium, and 4 plutonium ferromagnets with the spin fluctuation theory developed by Takahashi [Y. Takahashi, J. Phys. Soc. Jpn. 55, 3553 (1986), 10.1143/JPSJ.55.3553]. The basic and spin fluctuation parameters of the actinide ferromagnets are determined and the applicability of the spin fluctuation theory to actinide 5 f system has been discussed. Itinerant ferromagnets of the 3 d transition metals and their intermetallics follow a generalized Rhodes-Wohlfarth relation between peff/ps and TC/T0 , viz., peff/ps∝(TC/T0) -3 /2 . Here, ps, peff, TC, and T0 are the spontaneous and effective magnetic moments, the Curie temperature, and the width of spin fluctuation spectrum in energy space, respectively. The same relation is satisfied for TC/T0uranium and neptunium ferromagnets below (TC/T0)kink=0.32 ±0.02 , where a kink structure appears in relation between the two quantities. ps increases more weakly above (TC/T0)kink. A possible interpretation with the TC/T0 dependence of ps is given.

  19. Neurobiological underpinnings of shame and guilt: a pilot fMRI study.

    Science.gov (United States)

    Michl, Petra; Meindl, Thomas; Meister, Franziska; Born, Christine; Engel, Rolf R; Reiser, Maximilian; Hennig-Fast, Kristina

    2014-02-01

    In this study, a functional magnetic resonance imaging paradigm originally employed by Takahashi et al. was adapted to look for emotion-specific differences in functional brain activity within a healthy German sample (N = 14), using shame- and guilt-related stimuli and neutral stimuli. Activations were found for both of these emotions in the temporal lobe (shame condition: anterior cingulate cortex, parahippocampal gyrus; guilt condition: fusiform gyrus, middle temporal gyrus). Specific activations were found for shame in the frontal lobe (medial and inferior frontal gyrus), and for guilt in the amygdala and insula. This is consistent with Takahashi et al.'s results obtained for a Japanese sample (using Japanese stimuli), which showed activations in the fusiform gyrus, hippocampus, middle occipital gyrus and parahippocampal gyrus. During the imagination of shame, frontal and temporal areas (e.g. middle frontal gyrus and parahippocampal gyrus) were responsive regardless of gender. In the guilt condition, women only activate temporal regions, whereas men showed additional frontal and occipital activation as well as a responsive amygdala. The results suggest that shame and guilt share some neural networks, as well as having individual areas of activation. It can be concluded that frontal, temporal and limbic areas play a prominent role in the generation of moral feelings.

  20. Control of insect pests with electrons

    International Nuclear Information System (INIS)

    Hayashi, Toru; Imamura, Taro; Miyanoshita, Akihiro; Todoriki, Setsuko

    2003-01-01

    Effects of electron beams with an energy of 2.5 MeV on insect pests were slightly smaller than those of gamma-rays. Electron beams at 400 Gy inactivated all the pests for cut flowers tested; spider mite (Tetraychus urticae), mealybug (Pseudococcus comstocki), leaf miner (Liriomyza trifolii), thrips (Thrips palmi, and Thrips tabaci), cutworm (Spodoptera litura) and aphid (Myzus persicae). Carnation, alstromeria, gladiolus, tulip, statice, stock, dendrobium, prairie gentian, oncidium, campanula, gloriosa, fern, gypsophila, freesia, lobelia, triteleia and gerbera were tolerant to electron beams at 400-600 Gy, while chrysanthemum, rose, lily, calla, antherium, sweet pea and iris were intolerant. Radiation-induced deterioration of chrysanthemum could be prevented by post-irradiation treatment with commercial preservative solutions or sugar solutions. Soft-electrons at 60 keV effectively inactivated eggs, larvae and pupae of red flour beetle (Tribolium castaneum) and Indian meal moth (Plodia interpunctella) and eggs of adzuki bean weevil (Callosobruchus chinensis) at a dose of 1 kGy. The adults of T. castaneum and P. interpunctella were inactivated by electron treatment at 5.0 kGy and 7.5 kGy, respectively. Adults of C. chinensis survived at 7.5 kGy, but were inactivated having lost ability to walk at 2.5 kGy. Soft-electrons at 60 keV could not completely inactivate the larvae of C. chinensis and smaller larvae (2nd instar) of maize weevil (Stiophilus zeamais) inside beans and grains, because the electrons with low penetration did not reach the larvae due to the shield of beans or grains. However, soft-electrons at 60 keV inactivated eggs, larger larvae (4th instar) and pupae of S. zeamais in rice grains, which indicated that S. zeamais was exposed to electrons even inside the grains. (author)

  1. Pengujian kekhususan inang parasitoid Anagyrus lopezi (De Santis (Hymenoptera: Encyrtidae pada empat spesies kutu putih yang berasosiasi dengan tanaman singkong

    Directory of Open Access Journals (Sweden)

    Rani Dessy Karyani

    2016-12-01

    Full Text Available A parasitoid, Anagyrus lopezi (De Santis (Hymenoptera: Encyrtidae was introduced from Thailand into Indonesia  in early 2014 to control the cassava mealybug Phenacoccus manihoti Matile-Ferrero (Hemiptera: Pseudococcidae. To determine its potential uses and effect on non-target species, behavioural observation of the parasitoids were made on four species of mealybugs, i.e. P. manihoti, Paracoccus marginatus Williams-Granara de Willink, Pseudococcus jackbeardsleyi Gimpel-Miller, and Ferrisia virgata Cockerell (Hemiptera: Pseudococcidae. For that purposes, a set of tests were conducted wich includes host susceptability, preference, and suitability. Tests were conducted by exposing a female parasitoid to 3rd instar nymphs of each mealybug species in a petri dish. For susceptability test, parasitoid A. lopezi encounterend P. manihoti more often (13.70 ± 7.18 visits per 30 minutes as compared to P. marginatus (985 ± 10.24, P. jackbeardsleyi (6.60 ± 3.62, and F. virgata (5.75 ± 4.09. So did ovipositor probing occurred more on P. manihoti (8.20 ± 5.68 probes per 30 minutes than on P. marginatus (0.70 ± 1.84, P. jackbeardsleyi (0.35 ± 0.68, and F. virgata (0.10 ± 0.45. For preference test, host encounter and ovipositor probing by the parasitoid were more common on P. manihoti as opposed to other mealybug species. Out of four mealybug species tested, P. manihoti was the only suitable host for parasitoid development, with the number of progenies emerged 7.40 ± 2.17 individuals per 3 female parasitoids exposed in 24 hour. Host specifity exhibited by parasitoid A. lopezi may prevent adverse effect to other mealybug species inhabiting cassava fields.

  2. EMBALAGENS NA PROTEÇÃO CONTRA PRAGAS DE FRUTOS DE CAQUIZEIRO

    Directory of Open Access Journals (Sweden)

    Carine Rusin

    2015-12-01

    Full Text Available The persimmon culture can be attacked by several pests and diseases, however, there are few studies related to the control. In addition, there is a lack of pesticides registered in the Ministry of Agriculture, Livestock and Supply (MAPA, in Portuguese “Ministério da Agricultura, Pecuária e Abastecimento”, emerging the fruit bagging as an alternative. The aim of this study was to evaluate different kinds of protective packs for bagging persimmon fruits, in order to control pests and diseases and, consequently, improve the fruit quality. The experiment was conducted in a persimmon orchard on the experimental station of the Instituto Federal de Educação, Ciência e Tecnologia do Rio Grande do Sul (IFRS, located in the Tuiuty District, in Bento Gonçalves, RS. Were performed four treatments: control (not bagged fruits, perforated polypropylene packaging, white TNT (non woven tissue packing, and kraft brown paper packing. The harvested fruits were evaluated for weight, symptoms of caterpillars damage, presence of mealybug (Pseudococcus sp. and symptoms of Schyzothyrium pomi. The fluctuation population of Anastrepha fraterculus was performed using McPhail trap with hydrolyzed protein. Among the treatments, only the fruits protected with perforated polypropylene differ significantly from the control on the evaluations of weight and Schyzothyrium pomi symptoms. However, there was no significant difference on the damage caused by caterpillars and presence of mealybugs. The use of perforated polypropylene has demonstrated efficiency on the control of Anastrepha fraterculus, and it can be used to reduce the damage in the fruits.

  3. Experimental Melting Study of Basalt-Peridotite Hybrid Source: Constrains on Chemistry of Recycled Component

    Science.gov (United States)

    Gao, S.; Takahashi, E.; Matsukage, K. N.; Suzuki, T.; Kimura, J. I.

    2015-12-01

    It is believed that magma genesis of OIB is largely influenced by recycled oceanic crust component involved in the mantle plume (e.g., Hauri et al., 1996; Takahashi & Nakajima., 2002; Sobolev et al., 2007). Mallik & Dasgupta (2012) reported that the wall-rock reaction in MORB-eclogite and peridotite layered experiments produced a spectrum of tholeiitic to alkalic melts. However, the proper eclogite source composition is still under dispute. In order to figure out the geochemistry of recycled component as well as their melting process, we conducted a series of high-P, high-T experiments. Melting experiments (1~10hrs) were performed under 2.9GPa with Boyd-England type piston-cylinder (1460~1540°C for dry experiments, 1400~1500°C for hydrous experiments) and 5GPa with Kawai-type multi-anvil (1550~1650°C for dry experiments, 1350~1550°C for hydrous experiments), at the Magma Factory, Tokyo Tech. Spinel lherzolite KLB-1 (Takahashi 1986) was employed as peridotite component. Two basalts were used as recycled component: Fe-enriched Columbia River basalt (CRB72-180, Takahashi et al., 1998) and N-type MORB (NAM-7, Yasuda et al., 1994). In dry experiments below peridotite dry solidus, melt compositions ranged from basaltic andesite to tholeiite. Opx reaction band generated between basalt and peridotite layer hindered chemical reaction. On the other hand, alkali basalt was formed in hydrous run products because H2O promoted melting process in both layers. Compared with melts formed by N-MORB-peridotite runs, those layered experiments with CRB are enriched in FeO, TiO2, K2O and light REE at given MgO. In other words, melts produced by CRB-peridotite layered experiments are close to alkali basalts in OIB and tholeiite in Hawaii, while those by layered experiments with N-MORB are poor in above elements. Thus we propose that Fe-rich Archean or Proterozoic tholeiite (BVSP 1980) would be a possible candidate for recycled component in OIB source.

  4. Hydraulic experiment on formation mechanism of tsunami deposit and verification of sediment transport model for tsunamis

    Science.gov (United States)

    Yamamoto, A.; Takahashi, T.; Harada, K.; Sakuraba, M.; Nojima, K.

    2017-12-01

    An underestimation of the 2011 Tohoku tsunami caused serious damage in coastal area. Reconsideration for tsunami estimation needs knowledge of paleo tsunamis. The historical records of giant tsunamis are limited, because they had occurred infrequently. Tsunami deposits may include many of tsunami records and are expected to analyze paleo tsunamis. However, present research on tsunami deposits are not able to estimate the tsunami source and its magnitude. Furthermore, numerical models of tsunami and its sediment transport are also important. Takahashi et al. (1999) proposed a model of movable bed condition due to tsunamis, although it has some issues. Improvement of the model needs basic data on sediment transport and deposition. This study investigated the formation mechanism of tsunami deposit by hydraulic experiment using a two-dimensional water channel with slope. In a fixed bed condition experiment, velocity, water level and suspended load concentration were measured at many points. In a movable bed condition, effects of sand grains and bore wave on the deposit were examined. Yamamoto et al. (2016) showed deposition range varied with sand grain sizes. In addition, it is revealed that the range fluctuated by number of waves and wave period. The measurements of velocity and water level showed that flow was clearly different near shoreline and in run-up area. Large velocity by return flow was affected the amount of sand deposit near shoreline. When a cutoff wall was installed on the slope, the amount of sand deposit repeatedly increased and decreased. Especially, sand deposit increased where velocity decreased. Takahashi et al. (1999) adapted the proposed model into Kesennuma bay when the 1960 Chilean tsunami arrived, although the amount of sand transportation was underestimated. The cause of the underestimation is inferred that the velocity of this model was underestimated. A relationship between velocity and sediment transport has to be studied in detail, but

  5. Fermi interaction. Conservation of vector current and modified perturbation theory

    International Nuclear Information System (INIS)

    Rochev, V.E.

    1983-01-01

    The Fermi interaction (anti psi ysub(n) psi)sup(2) is investigated with the method of auxilary field. The analogues of the Ward-Takahashi electrodynamical identities and the gauge transformations of Green functions, that are the consequence of the conservation of vector current, have been obtained. The gauge function for the spinor propagator is the exponential superpropagator. The arguments are given in favour of the existence of a modified perturbation theory, which is finite in every order and non-analytical over its coupling constant, for the four-fermion interaction. The non-analytical part is defined unambiguously, and the analytical part contains a set of finite dimensionless constants to define which non-perturbative information is needed. The simplest model (the chain approximation) for the non-stable vector bound state is considered

  6. Method of processing spent fuel cladding tubes

    International Nuclear Information System (INIS)

    Nakatsuka, Masafumi; Ouchi, Atsuhiro; Imahashi, Hiromichi.

    1986-01-01

    Purpose: To decrease the residual activity of spent fuel cladding tubes in a short period of time and enable safety storage with simple storage equipments. Constitution: Spent fuel cladding tubes made of zirconium alloys discharged from a nuclear fuel reprocessing step are exposed to a grain boundary embrittling atmosphere to cause grain boundary destruction. This causes grain boundary fractures to the zirconium crystal grains as the matrix of nuclear fuels and then precipitation products precipitated to the grain boundary fractures are removed. The zirconium constituting the nuclear fuel cladding tube and other ingredient elements contained in the precipitation products are separated in this removing step and they are separately stored respectively. As a result, zirconium constituting most part of the composition of the spent nuclear fuel cladding tubes can be stored safely at a low activity level. (Takahashi, M.)

  7. Concentration device for leak liquids

    International Nuclear Information System (INIS)

    Matsumoto, Kaname; Matsuda, Ken; Takabori, Ken-ichi.

    1987-01-01

    Purpose: To improve radioactivity recovery and volume-reducing rates, as well as enable safety and easy handling for leak liquids resulted from reptures in coolant circuits. Constitution: The device of the invention comprises an evaporation vessel filled with leak fluids to a predetermined level, an airtight vessel disposed in the evaporation vessel containing hydrophilic porous material partially immersed in the leak fluids and means for heating the hydrophilic material. In this device, leak liquids are absorbed in the hydrophilic porous material, a great amount of water is evaporated from the outer surface of the hydrophilic porous material exposed above the liquid surface, and salts and radioactive material are remained on the inside and the outer surface of the porous material. The evaporated water content is condensated and recovered in a cooler and the remaining salts, etc. are discarded together with the porous material. The volume-reducing property can be improved by constituting the porous material with burnable material. (Takahashi, M.)

  8. The gross theory model for neutrino-nucleus cross-section

    International Nuclear Information System (INIS)

    Samana, A R; Barbero, C A; Krmpotic, F; Duarte, S B; Dimarco, A J

    2008-01-01

    The nuclear gross theory, originally formulated by Takahashi and Yamada (1969 Prog. Theor. Phys. 41 1470) for the β-decay, is applied to the electronic-neutrino nucleus reactions, employing a more realistic description of the energetics of the Gamow-Teller resonances. The model parameters are gauged from the most recent experimental data, both for β - -decay and electron capture, separately for even-even, even-odd, odd-odd and odd-even nuclei. The numerical estimates for neutrino-nucleus cross-sections agree fairly well with previous evaluations done within the framework of microscopic models. The formalism presented here can be extended to the heavy nuclei mass region, where weak processes are quite relevant, which is of astrophysical interest because of its applications in supernova explosive nucleosynthesis

  9. Bethe ansatz approach to quantum sine Gordon thermodynamics and finite temperature excitations

    International Nuclear Information System (INIS)

    Zotos, X.

    1982-01-01

    Takahashi and Suzuki (TS) using the Bethe ansatz method developed a formalism for the thermodynamics of the XYZ spin chain. Translating their formalism to the quantum sine-Gordon system, the thermodynamics and finite temperature elementary excitations are analyzed. Criteria imposed by TS on the allowed states simply correspond to the condition of normalizability of the wave functions. A set of coupled nonlinear integral equations for the thermodynamic equilibrium densities for particular values of the coupling constant in the attractive regime is derived. Solving numerically these Bethe ansatz equations, curves of the specific heat as a function of temperature are obtained. The soliton contribution peaks at a temperature of about 0.4 soliton masses shifting downward as the classical limit is approached. The weak coupling regime is analyzed by deriving the Bethe ansatz equations including the charged vacuum excitations. It is shown that they are necessary for a consistent presentation of the thermodynamics

  10. Eigenmode analysis of compressional waves in the magnetosphere

    International Nuclear Information System (INIS)

    Cheng, C.Z.; Lin, C.S.

    1987-04-01

    A field-aligned eigenode analysis of compressional Alfven instabilities has been performed for a two component anisotropic plasma in a dipole magnetic field. The eigenmode equations are derived from the gyrokinetic equations in the long wavelength (k rho < 1) and low frequency (ω < ω/sub b/) limits, where rho is the hot particle gyroradius and ω/sub b/ is the hot particle bounce frequency. Two types of compressional instabilities are identified. One is the drift mirror mode which has an odd parity compressional magnetic component with respect to the magnetic equator. The other is the drift compressional mode with an even parity compressional magnetic component. For typical storm time plasma parameters neargeosynchronous orbit, the drift mirror mode is most unstable and the drift compressional mode is stable. The storm time compressional Pc 5 waves, observed by multiple satellites during November 14-15, 1979 [Takahashi et al., 1987], can be explained by the drift mirror instability

  11. External gauge invariance and anomaly in BS vertices and boundstates

    International Nuclear Information System (INIS)

    Bando, Masako; Harada, Masayasu; Kugo, Taichiro

    1994-01-01

    A systematic method is given for obtaining consistent approximations to the Schwinger-Dyson (SD) and Bethe-Salpeter (BS) equations which maintain the external gauge invariance. We show that for any order of approximation to the SD equation there is a corresponding approximation to the BS equations such that the solutions to those equations satisfy the Ward-Takahashi identities of the external gauge symmetry. This formulation also clarifies the way how we can calculate the Green functions of current operators in a consistent manner with the gauge invariance and the axial anomaly. We show which type of diagrams for the π 0 → γγ amplitude using the pion BS amplitude give result consistent with the low-energy theorem. An interesting phenomenon is observed in the ladder approximation that the low-energy theorem is saturated by the zeroth order terms in the external momenta of the pseudoscalar BS amplitude and the vector vertex functions. (author)

  12. Method of separating radioactive nuclides from ion exchange resins

    International Nuclear Information System (INIS)

    Suzuki, Kazunori; Saikoku, Masami; Taneta, Daisuke; Yagi, Takuro.

    1987-01-01

    Purpose: To enable to safely process radioactive nuclides from spent ion exchange resins by using existent processing facilities. Method: Ion exchange resins in aqueous medium are at first placed to the ultrasonic wave irradiation site and put into such a state where clads and resins are easily separatable from each other by weakening the bonding force between them. Since the clads are magnetic material such as Fe 3 O 4 or NiFe 2 O 4 , the clads can be collected in the direction of the magnetic force by exerting the magnetic field simultaneously. The collected clads are transported by means of the aqueous medium to a collecting tank by removing the effect of magnetic field, for example, by interrupting the current supply to the electromagnet. Finally, they were subjected to stabilization and fixation into inorganic hardening agent such as cement hardener. Thus, processions can be made safely by using existent facilities. (Takahashi, M.)

  13. Thermal expansion of coexistence of ferromagnetism and superconductivity

    International Nuclear Information System (INIS)

    Hatayama, Nobukuni; Konno, Rikio

    2010-01-01

    The temperature dependence of thermal expansion of coexistence of ferromag-netism and superconductivity below the superconducting transition temperature T cu of a majority spin conduction band is investigated. Majority spin and minority spin superconducting gaps exist in the coexistent state. We assume that the Curie temperature is much larger than the superconducting transition temperatures. The free energy that Linder et al. [Phys. Rev. B76, 054511 (2007)] derived is used. The thermal expansion of coexistence of ferromagnetism and superconductivity is derived by the application of the method of Takahashi and Nakano [J. Phys.: Condens. Matter 18, 521 (2006)]. We find that we have the anomalies of the thermal expansion in the vicinity of the superconducting transition temperatures.

  14. A hybrid method for the parallel computation of Green's functions

    DEFF Research Database (Denmark)

    Petersen, Dan Erik; Li, Song; Stokbro, Kurt

    2009-01-01

    of the large number of times this calculation needs to be performed, this is computationally very expensive even on supercomputers. The classical approach is based on recurrence formulas which cannot be efficiently parallelized. This practically prevents the solution of large problems with hundreds...... of thousands of atoms. We propose new recurrences for a general class of sparse matrices to calculate Green's and lesser Green's function matrices which extend formulas derived by Takahashi and others. We show that these recurrences may lead to a dramatically reduced computational cost because they only...... require computing a small number of entries of the inverse matrix. Then. we propose a parallelization strategy for block tridiagonal matrices which involves a combination of Schur complement calculations and cyclic reduction. It achieves good scalability even on problems of modest size....

  15. Chiral-symmetry breaking and confinement in Minkowski space

    Energy Technology Data Exchange (ETDEWEB)

    Biernat, Elmer P. [Unibersidade de Lisboa, 104-001, Lisboa, Portugal; Pena, M. T. [Universidade de Lisboa, 1049-001, Lisboa, Portugal; Ribiero, J. E. [Universidade de Lisboa, 1049-001 Lisboa, Portugal; Stadler, Alfred [Universidade de Évora, 7000-671 Évora, Portugal; Universidade de Lisboa, 1049-001 Lisboa, Portugal; Gross, Franz [Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)

    2016-01-01

    We present a model for the quark-antiquark interaction formulated in Minkowski space using the Covariant Spectator Theory. The quark propagators are dressed with the same kernel that describes the interaction between different quarks. By applying the axial-vector Ward-Takahashi identity we show that our model satisfies the Adler-zero constraint imposed by chiral symmetry. For this model, our Minkowski-space results of the dressed quark mass function are compared to lattice QCD data obtained in Euclidean space. The mass function is then used in the calculation of the electromagnetic pion form factor in relativistic impulse approximation, and the results are presented and compared with the experimental data from JLab.

  16. Goldstone fermions in supersymmetric theories at finite temperature

    International Nuclear Information System (INIS)

    Aoyama, H.; Boyanovsky, D.

    1984-01-01

    The behavior of supersymmetric theories at finite temperature is examined. It is shown that supersymmetry is broken for any T> or =0 because of the different statistics obeyed by bosons and fermions. This breaking is always associated with a Goldstone mode(s). This phenomenon is shown to take place even in a free massive theory, where the Goldstone modes are created by composite fermion-boson bilinear operators. In the interacting theory with chiral symmetry, the same bilinear operators create the chiral doublet of Goldstone fermions, which is shown to saturate the Ward-Takahashi identities up to one loop. Because of this spontaneous supersymmetry breaking, the fermions and the bosons acquire different effective masses. In theories without chiral symmetry, at the tree level the fermion-boson bilinear operators create Goldstone modes, but at higher orders these modes become massive and the elementary fermion becomes the Goldstone field because of the mixing with these bilinear operators

  17. Four-particle scattering with three-particle interactions

    International Nuclear Information System (INIS)

    Adhikari, S.K.

    1979-01-01

    The four-particle scattering formalism proposed independently by Alessandrini, by Mitra et al., by Rosenberg, and by Takahashi and Mishima is extended to include a possible three-particle interaction. The kernel of the new equations we get contain both two- and three-body connected parts and gets four-body connected after one iteration. On the other hand, the kernel of the original equations in the absence of three-particle interactions does not have a two-body connected part. We also write scattering equations for the transition operators connecting the two-body fragmentation channels. They are generalization of the Sloan equations in the presence of three-particle interactions. We indicate how to include approximately the effect of a weak three-particle interaction in a practical four-particle scattering calculation

  18. A solar station in Ica - Mutsumi Ishitsuka: a research center to improve education at the university and schools

    Science.gov (United States)

    Terrazas-Ramos, Raúl

    2012-07-01

    The San Luis Gonzaga National University of Ica has built a solar station, in collaboration with the Geophysical Institute of Peru, the National Astronomical Observatory of Japan and the Hida Observatory. The Solar Station has the following equipment: a digital Spectrograph Solar Refractor Telescope Takahashi 15 cm aperture, 60 cm reflector telescope aperture, a magnetometer-MAGDAS/CPNM and a Burst Monitor Telescope Solar-FMT (Project CHAIN). These teams support the development of astronomical science and Ica in Peru, likewise contributing to science worldwide. The development of basic science will be guaranteed when university students, professors and researchers work together. The Solar Station will be useful for studying the different levels of university education and also for the general public. The Solar Station will be a good way to spread science in the region through public disclosure.

  19. Cytogenetic and taxonomic studies of some legless mealybugs (Homoptera, Coccinea, Pseudococcidae

    Directory of Open Access Journals (Sweden)

    Ilya A. Gavrilov-Zimin

    2016-11-01

    Full Text Available A new monotypic genus and species, Komodesia circuliplurima gen. et sp. n., from Flores Is. (Indonesia and the new species, Antonina diversiglandulosa sp. n., from Southern Thailand are described and illustrated. Chromosomes of these species and also the ones of Antonina purpurea Signoret, 1872 and A. thaiensis Takahashi, 1942 are studied for the first time: 2n = 30, 20, 12 and 22+Bs correspondingly; the male embryos of all four species demonstrate Lecanoid paternal heterochromatinization of one haploid set of chromosomes. The karyotypes of three widely distributed species, Antonina pretiosa Ferris, 1953, A. graminis (Maskell, 1897 and Chaetococcus bambusae (Maskell, 1893, are studied based on material from other regions in comparison with previously published data. Photographs of the karyotypes are provided for the first time for all seven species. The terminological problems connected with the identification and naming of the three scale insect genetic systems, Lecanoid, Comstockioid and Diaspidoid, are discussed.

  20. Method of burning ion-exchange resin contaminated with radioactivity

    International Nuclear Information System (INIS)

    Suzuki, Shigenori.

    1986-01-01

    Purpose: To process spent ion exchange resins to reduce their volume, without increasing the load on a off-gas system and in a stable state and at the same time not leaving any uncombusted portions. Method: The water slurries of the ion exchange resins contaminated with radioactive materials is dehydrated or dry combusted to reduce the water content. A binder is then added to solidify the ion exchange resin. The solidified ion exchange resins are then combusted in a furnace. This prevents the ion exchange resin from being dispersed by air and combustion gases. Furthermore, the solidified ion exchange resins in the form of small pellets burn from the surface inwards. Moreover the binder is carbonized by the combustion heat and promotes combustion to convert the ion exchange resins into a solid mass, making sure that no uncombusted portion is left. (Takahashi, M.)

  1. Projecting the Bethe-Salpeter Equation onto the Light-Front and Back: A Short Review

    International Nuclear Information System (INIS)

    Frederico, T.; Salme, G.

    2011-01-01

    The technique of projecting the four-dimensional two-body Bethe-Salpeter equation onto the three-dimensional Light-Front hypersurface, combined with the quasi-potential approach, is briefly illustrated, by placing a particular emphasis on the relation between the projection method and the effective dynamics of the valence component of the Light-Front wave function. Some details on how to construct the Fock expansion of both (a) the Light-Front effective interaction and (b) the electromagnetic current operator, satisfying the proper Ward-Takahashi identity, will be presented, addressing the relevance of the Fock content in the operators living onto the Light-Front hypersurface. Finally, the generalization of the formalism to the three-particle case will be outlined. (author)

  2. Successful treatment of two cases of urorectal septum malformation sequence with oligohydramnios and severe respiratory failure

    Directory of Open Access Journals (Sweden)

    Sekiguchi K

    2013-03-01

    Full Text Available Kazuhito Sekiguchi, Daijiro Takahashi, Takehiko Hiroma, Tomohiko Nakamura Division of Neonatology, Nagano Children's Hospital, Nagano, Japan Abstract: Urorectal septum malformation sequence can be diagnosed prenatally. We report herein the successful treatment of severe respiratory failure in two patients with urorectal septum malformation sequence and prenatally diagnosed oligohydramnios. The patients showed significant hypoxic deterioration and persistent pulmonary artery hypertension soon after birth. We used high-frequency ventilation (HFO, nitric oxide (NO, and extracorporeal membrane oxygenation (ECMO. The patients were successfully weaned from ECMO and artificial ventilation and discharged to home. Although termination of the pregnancy has often been selected for fetuses with oligohydramnios-related urorectal septum malformation sequence, our results suggest the opportunity for these fetuses to be treated using respiratory supports including HFO, NO, and ECMO after birth. Keywords: urorectal septum malformation sequence, oligohydramnios, pulmonary hypoplasia

  3. A nonperturbative fermion-boson vertex

    International Nuclear Information System (INIS)

    Bashir, A.; Raya, A.

    2002-01-01

    We calculate the massive fermion propagator at one-loop order in QED3. The Ward-Takahashi identity (WTI) relates the propagator to the vertex. This allows us to split the vertex into its longitudinal and transverse parts. The former is fixed by the WTI. Following the scheme of Ball and Chiu later modified by Kizilersue et. al., we calculate the full vertex at one-loop order. A mere subtraction of the longitudinal part of the vertex gives us the transverse part. The α dependence in the transverse vertex can be eliminated by making use of the perturbative expressions for the wavefunction renormalization function and the mass function of complicated arguments of the incoming and outgoing fermion momenta. This leads us to a vertex which is nonperturbative in nature. We also calculate an effective vertex for which the arguments of the unknown functions have no angular dependence, making it particularly suitable for numerical studies of dynamical symmetry breaking

  4. A Review of the Fatigue Properties of Additively Manufactured Ti-6Al-4V

    Science.gov (United States)

    Cao, Fei; Zhang, Tiantian; Ryder, Matthew A.; Lados, Diana A.

    2018-03-01

    Various additive manufacturing (AM) technologies have been used to fabricate Ti-6Al-4V. The fatigue performance of Ti-6Al-4V varies from process to process. In this review, fatigue properties of Ti-6Al-4V alloys made by different AM technologies and post-fabrication treatments were compiled and discussed to correlate with the materials' characteristic features, primarily surface roughness and porosity. Microstructure anisotropy and porosity effects on fatigue crack growth and fatigue life are also presented and discussed. A modified Kitagawa-Takahashi diagram developed from current available fatigue data was used to quantify the influence of defects on fatigue strength. This review aims to assist in selecting/optimizing AM processes to achieve high fatigue resistance in Ti-6Al-4V, as well as provide a better understanding of the advantages and limitations of current AM techniques in producing titanium alloys.

  5. Off-Shell Green Functions: One-Loop with Growing Legs

    International Nuclear Information System (INIS)

    Bashir, A.; Concha-Sanchez, Y.; Delbourgo, R.; Tejeda-Yeomans, M. E.

    2008-01-01

    One loop calculations in gauge theories in arbitrary gauge and dimensions become exceedingly hard with growing number of external off-shell legs. Let alone higher point functions, such a calculation for even the three point one-loop vertices for quantum electrodynamics (QED) and quantum chromodynamics (QCD) has been made available only recently. In this article, we discuss how Ward-Fradkin-Green-Takahashi identities (WFGTI) may provide a helpful tool in these computations. After providing a glimpse of our suggestion for the case of the 3-point vertex, we present our preliminary findings towards our similar efforts for the 4-point function. We restrict ourselves to the example of scalar quantum electrodynamics (SQED)

  6. Radiation shielding method for pipes, etc

    International Nuclear Information System (INIS)

    Nagao, Tetsuya; Takahashi, Shuichi.

    1988-01-01

    Purpose: To constitute shielding walls of a dense structure around pipes and enable to reduce the wall thickness thereof upon periodical inspection, etc. for nuclear power plants. Constitution: For those portions of pipes requring shieldings, cylindrical vessels surrounding the portions are disposed and connected to a mercury supply system, a mercury discharge system and a freezing system for solidifying mercury. After charging mercury in a tank by way of a supply hose to the cylindrical vessels, the temperature of the mercury is lowered below the freezing point thereof to solidify the mercury while circulating cooling medium, to thereby form dense cylindrical radioactive-ray shielding walls. The specific gravity of mercury is greater than that of lead and, accordingly, the thickness of the shielding walls can be reduced as compared with the conventional wall thickness of the entire laminates. (Takahashi, M.)

  7. Universal formula for the energy–momentum tensor via a flow equation in the Gross–Neveu model

    International Nuclear Information System (INIS)

    Suzuki, Hiroshi

    2015-01-01

    For the fermion field in the two-dimensional Gross–Neveu model, we introduce a flow equation that allows a simple 1/N expansion. By employing the 1/N expansion, we examine the validity of a universal formula for the energy–momentum tensor which is based on the small flow-time expansion. We confirm that the formula reproduces a correct normalization and the conservation law of the energy–momentum tensor by computing the translation Ward–Takahashi relation in the leading non-trivial order in the 1/N expansion. Also, we confirm that the expectation value at finite temperature correctly reproduces thermodynamic quantities. These observations support the validity of a similar construction of the energy–momentum tensor via the gradient/Wilson flow in lattice gauge theory

  8. Minkowski space pion model inspired by lattice QCD running quark mass

    Energy Technology Data Exchange (ETDEWEB)

    Mello, Clayton S. [Instituto Tecnológico de Aeronáutica, DCTA, 12.228-900 São José dos Campos, SP (Brazil); Melo, J.P.B.C. de [Laboratório de Física Teórica e Computacional – LFTC, Universidade Cruzeiro do Sul, 01506-000 São Paulo, SP (Brazil); Frederico, T., E-mail: tobias@ita.br [Instituto Tecnológico de Aeronáutica, DCTA, 12.228-900 São José dos Campos, SP (Brazil)

    2017-03-10

    The pion structure in Minkowski space is described in terms of an analytic model of the Bethe–Salpeter amplitude combined with Euclidean Lattice QCD results. The model is physically motivated to take into account the running quark mass, which is fitted to Lattice QCD data. The pion pseudoscalar vertex is associated to the quark mass function, as dictated by dynamical chiral symmetry breaking requirements in the limit of vanishing current quark mass. The quark propagator is analyzed in terms of a spectral representation, and it shows a violation of the positivity constraints. The integral representation of the pion Bethe–Salpeter amplitude is also built. The pion space-like electromagnetic form factor is calculated with a quark electromagnetic current, which satisfies the Ward–Takahashi identity to ensure current conservation. The results for the form factor and weak decay constant are found to be consistent with the experimental data.

  9. Generalized ward identities for non-local transformation

    International Nuclear Information System (INIS)

    Li Ziping; Li Ruijie

    2002-01-01

    Based on the phase-space generating functional of Green function for a system with a singular higher-order Lagrangian, the generalized canonical Ward identities under the local and non-local transformation in phase space for such a system have been derived. Starting from the configuration-space generating functional for a gauge-invariant system, the generalized Ward identities were deduced under the local, non-local and global transformation, respectively. The applications to the non-Abelian Chern-Simons theories with higher derivatives were given. Some relationships among the proper vertices have been deduced, in which one does not need to carry out the integration over canonical momenta in phase-space generating functional. The Ward-Takahashi identities for BRS transformation are also obtained

  10. SUSY WT identity in a lattice formulation of 2D N=(2,2) SYM

    International Nuclear Information System (INIS)

    Kadoh, Daisuke; Suzuki, Hiroshi

    2010-01-01

    We address some issues relating to a supersymmetric (SUSY) Ward-Takahashi (WT) identity in Sugino's lattice formulation of two-dimensional (2D) N=(2,2)SU(k) supersymmetric Yang-Mills theory (SYM). A perturbative argument shows that the SUSY WT identity in the continuum theory is reproduced in the continuum limit without any operator renormalization/mixing and tuning of lattice parameters. As application of the lattice SUSY WT identity, we show that a prescription for the Hamiltonian density in this lattice formulation, proposed by Kanamori, Sugino and Suzuki, is justified also from a perspective of an operator algebra among correctly-normalized supercurrents. We explicitly confirm the SUSY WT identity in the continuum limit to the first nontrivial order in a semi-perturbative expansion.

  11. The scalar-photon 3-point vertex in massless quenched scalar QED

    International Nuclear Information System (INIS)

    Concha-Sánchez, Y; Gutiérrez-Guerrero, L X; Fernández-Rangel, L A

    2016-01-01

    Non perturbative studies of Schwinger-Dyson equations (SDEs) require their infinite, coupled tower to be truncated in order to reduce them to a practically solvable set. In this connection, a physically acceptable ansatz for the three point vertex is the most favorite choice. Scalar quantum electrodynamics (sQED) provides a simple and neat platform to address this problem. The most general form of the scalar-photon three point vertex can be expressed in terms of only two independent form factors, longitudinal and transverse. Ball and Chiu have demonstrated that the longitudinal vertex is fixed by requiring the Ward-Fradkin-Green- Takahashi identity (WFGTI), while the transverse vertex remains undetermined. In massless quenched sQED, we propose the transverse part of the non perturbative scalar-photon vertex. (paper)

  12. Method of preventing contaminations in radioactive material handling facilities

    International Nuclear Information System (INIS)

    Inoue, Shunji.

    1986-01-01

    Purpose: To prevent the contamination on the floor surface of working places by laying polyvinyl butyral sheets over the floor surface, replacing when the sheets are contaminated, followed by burning. Method: Polyvinyl butyral sheets comprising 50 - 70 mol% of butyral component are laid in a radioactive material handling facility, radioactive materials are handled on the polyvinyl butyral sheets and the sheets are replaced when contaminated. The polyvinyl butyral sheets used contain 62 - 68 mol% of butyral component and has 0.03 - 0.2 mm thickness. The contaminated sheets are subjected to burning processing. This can surely collect radioactive materials and the sheets have favorable burnability, releasing no corrosive or deleterious gases. In addition, they are inexpensive and give no hindrance to the workers walking. (Takahashi, M.)

  13. Chiral-symmetry breaking and confinement in Minkowski space

    International Nuclear Information System (INIS)

    Biernat, Elmar P.; Peña, M. T.; Ribeiro, J. E.; Stadler, Alfred; Gross, Franz

    2016-01-01

    We present a model for the quark-antiquark interaction formulated in Minkowski space using the Covariant Spectator Theory. The quark propagators are dressed with the same kernel that describes the interaction between different quarks. By applying the axial-vector Ward-Takahashi identity we show that our model satisfies the Adler-zero constraint imposed by chiral symmetry. For this model, our Minkowski-space results of the dressed quark mass function are compared to lattice QCD data obtained in Euclidean space. The mass function is then used in the calculation of the electromagnetic pion form factor in relativistic impulse approximation, and the results are presented and compared with the experimental data from JLab

  14. Chiral-symmetry breaking and confinement in Minkowski space

    Energy Technology Data Exchange (ETDEWEB)

    Biernat, Elmar P. [Centro de Física Teórica de Partículas (CFTP), Instituto Superior Técnico (IST), Universidade de Lisboa, 1049-001 Lisboa (Portugal); Peña, M. T. [Centro de Física Teórica de Partículas (CFTP), Instituto Superior Técnico (IST), Universidade de Lisboa, 1049-001 Lisboa (Portugal); Departamento de Física, Instituto Superior Técnico (IST), Universidadede Lisboa, 1049-001 Lisboa (Portugal); Ribeiro, J. E. [Centro de Física das Interações Fundamentais (CFIF), Instituto Superior Técnico (IST), Universidade de Lisboa, 1049-001 Lisboa (Portugal); Stadler, Alfred [Departamento de Física, Universidade de Évora, 7000-671 Évora (Portugal); Centro de Física Teórica de Partículas (CFTP), Instituto Superior Técnico (IST), Universidade de Lisboa, 1049-001 Lisboa (Portugal); Gross, Franz [Thomas Jefferson National Accelerator Facility (JLab), Newport News, Virginia 23606 (United States)

    2016-01-22

    We present a model for the quark-antiquark interaction formulated in Minkowski space using the Covariant Spectator Theory. The quark propagators are dressed with the same kernel that describes the interaction between different quarks. By applying the axial-vector Ward-Takahashi identity we show that our model satisfies the Adler-zero constraint imposed by chiral symmetry. For this model, our Minkowski-space results of the dressed quark mass function are compared to lattice QCD data obtained in Euclidean space. The mass function is then used in the calculation of the electromagnetic pion form factor in relativistic impulse approximation, and the results are presented and compared with the experimental data from JLab.

  15. Minkowski space pion model inspired by lattice QCD running quark mass

    Directory of Open Access Journals (Sweden)

    Clayton S. Mello

    2017-03-01

    Full Text Available The pion structure in Minkowski space is described in terms of an analytic model of the Bethe–Salpeter amplitude combined with Euclidean Lattice QCD results. The model is physically motivated to take into account the running quark mass, which is fitted to Lattice QCD data. The pion pseudoscalar vertex is associated to the quark mass function, as dictated by dynamical chiral symmetry breaking requirements in the limit of vanishing current quark mass. The quark propagator is analyzed in terms of a spectral representation, and it shows a violation of the positivity constraints. The integral representation of the pion Bethe–Salpeter amplitude is also built. The pion space-like electromagnetic form factor is calculated with a quark electromagnetic current, which satisfies the Ward–Takahashi identity to ensure current conservation. The results for the form factor and weak decay constant are found to be consistent with the experimental data.

  16. Sensorless-adaptive DTC of double star induction motor

    International Nuclear Information System (INIS)

    Khedher, Adel; Faouzi Mimouni, Mohamed

    2010-01-01

    This paper presents a study of extension of the Direct Torque Control approach (DTC) developed by Takahashi for a double star induction motor (DSIM) and a new DTC-Space vector modulation (DTC-SVM) strategy around two dead-beat controllers. The suggested control is performed by using a sliding mode stator flux observer (SMSFO). This last allow to estimating the mechanical speed and the electromagnetic torque. To adapt in real time the rotor resistance variations according to temperature effect, the sensorless method is performed by using an adaptive algorithm which is based on the Lyapunov stability theory. Moreover, this paper treats the study of the system stability under the new suggested control. The simulation results for various scenarios operation show the high performances of the proposed control in terms of piloting effectiveness, precision, rapidity and stability for the high powers DSIM operating at variable speeds.

  17. Method of reprocessing spent nuclear fuels

    International Nuclear Information System (INIS)

    Kamiyama, Hiroaki; Inoue, Tadashi; Miyashiro, Hajime.

    1987-01-01

    Purpose: To facilitate the storage management for the wastes resulting from reprocessing by chemically separating transuranium elements such as actionoid elements together with uranium and plutonium. Method: Spent fuels from a nuclear reactor are separated into two groups, that is, a mixture of uranium, plutonium and transuranium elements and cesium, strontium and other nuclear fission products. Virgin uranium is mixed to adjust the mixture of uranium, plutonium and transuranium elements in the first group, which is used as the fuels for the nuclear reactor. After separating to recover useful metals such as cesium and strontium are separated from short half-decay nuclear fission products of the second group, other nuclear fission products are stored and managed. This enables to shorten the storage period and safety storage and management for the wastes. (Takahashi, M.)

  18. Method of processing radioactive rare gase

    International Nuclear Information System (INIS)

    Tagusagawa, Atsushi; Tuda, Kazuaki.

    1988-01-01

    Purpose: To obtain a safety processing method without using mechanical pumps or pressure-proof containers and, accordingly, with no risk for the leakage of radioactive rare gas. Method: A container filled with zeolige is inserted with a cover being opened into an autoclave. Meanwhile, krypton-containing gases are supplied to an adsorption tower filled with adsorbents, cooled, adsorbed and then heated to desorb adsorbed krypton. The krypton-containing gases are introduced due to the pressure difference to the autoclave thereby causing krypton to adsorb at ambient temperature to zeolite. Then, the inside of the autoclave is heated to desorb krypton and adsorbed moistures from zeolite and the pressure is elevated. After sending the gases under pressure to the adsorption tower, the zeolite-filled container is taken out from the autoclave, tightly closed and then transferred to a predetermined site. (Takahashi, M.)

  19. Data for amino acid alignment of Japanese stingray melanocortin receptors with other gnathostome melanocortin receptor sequences, and the ligand selectivity of Japanese stingray melanocortin receptors

    Directory of Open Access Journals (Sweden)

    Akiyoshi Takahashi

    2016-06-01

    Full Text Available This article contains structure and pharmacological characteristics of melanocortin receptors (MCRs related to research published in “Characterization of melanocortin receptors from stingray Dasyatis akajei, a cartilaginous fish” (Takahashi et al., 2016 [1]. The amino acid sequences of the stingray, D. akajei, MC1R, MC2R, MC3R, MC4R, and MC5R were aligned with the corresponding melanocortin receptor sequences from the elephant shark, Callorhinchus milii, the dogfish, Squalus acanthias, the goldfish, Carassius auratus, and the mouse, Mus musculus. These alignments provide the basis for phylogenetic analysis of these gnathostome melanocortin receptor sequences. In addition, the Japanese stingray melanocortin receptors were separately expressed in Chinese Hamster Ovary cells, and stimulated with stingray ACTH, α-MSH, β-MSH, γ-MSH, δ-MSH, and β-endorphin. The dose response curves reveal the order of ligand selectivity for each stingray MCR.

  20. Formation and decomposition of astatine molecules

    International Nuclear Information System (INIS)

    Takahashi, Naruto; Ishikuro, Mituhiro; Baba Hiroshi

    1989-01-01

    A method determining the boiling points of elementary astatine and astatine iodide has been developed (K. Otozai and N. Takahashi, Radio. Chim. Acta 31, (1982) 201). Further, it was concluded from the simple rule among the boiling point of elementary halogens and interhalogen compounds that elementary astatine might exist in diatomic molecules as the other halogens. In the present work the reaction mechanisms of elementary astatine with radioactive iodine and organic solvents were studied by means of radiogaschromatography in order to obtain further experimental evidences for diatomic astaine molecules. The following conclusions were obtained by the analysis of reaction kinetics. Two astatine atoms are lost from the elementary astatine fraction per each radioactive decay of astatine. The astatine radical or hot atom liberated by the decay of the complementary astatine atom immediately reacts with iodine or organic solvents. Thus formed astatine compounds decompose in turn due to the decay of astatine

  1. Method of reducing radioactivity in nuclear reactors

    International Nuclear Information System (INIS)

    Koshino, Yasuo

    1987-01-01

    Purpose: To prevent increase of radiation dose ratio in primary coolant circuit pipeways of nuclear reactor and reduce operators' exposure dose upon periodical inspection, etc. Method: β-diketone such as acetylacetone is added in a predetermined amount to reactor cooling water. β-diketone dissolves to catch metal ions and iron oxides as the main ingredient of cruds. The resultant β-diketone complex of metals is slightly water soluble neutron molecule, and the total metal amount in the reactor coolant is at a concentration of less than 10 ppb and completely dissolved in water. Accordingly, deposition of clads in the coolant to pipeways can be prevented thereby enabling to prevent the increase in the radiation dose ratio in the pipeways and thus reduce the operators' exposure dose. (Takahashi, M.)

  2. Operation method for after-heat removal

    International Nuclear Information System (INIS)

    Tamano, Toyomi; Sakuragi, Masanori; Kogiso, Zen-ichi; Wake, Minoru.

    1987-01-01

    Purpose: To moderate thermal shocks applied to a feedwater pipe plate portion at the inlet of a steam generator thereby maintaining the integrity and safety of an LMFBR type plant. Method: Water with feed from the condenser to a steam generator. Steams generated in the steam generator are introduced to an air/water separator in a recycling system and a control device is actuated. Water separated by the air/water separator is recycled to the steam generator, while monitoring the temperature variation coefficient for the feedwater temperature at the inlet of the steam generator. If the temperature variation coefficient exceeds a predetermined setting value, the recycling flow rate is decreased in accordance with the deviation. This can greatly moderate the thermal shocks applied to the feedwater pipe plate portion at the inlet of the steam generator upon starting of the recycling system. (Takahashi, M.)

  3. Method for solidification of radioactive iodine-containing solid wastes

    International Nuclear Information System (INIS)

    Ozawa, Yoshihiro; Funabashi, Kiyomi; Uetake, Naoto.

    1987-01-01

    Purpose: To process radioactive iodine containing solid wastes as non-leaching solidified wastes with no risk of iodine release. Method: It has been known for the thermal stability of CuI, PbI 2 or adsorbents containing the same that they do not release iodine in an inert gas atmosphere or in a reducing atmosphere at a temperature lower than 480 deg C. In view of the above, adsorbents containing iodine in the chemical form of CuI or PbI 2 , or CuI or powdery PbI 2 per se are sealed and solidified into low melting glass at a temperature of lower than 480 deg C at which no iodine release occurs in a non-oxidative atmosphere. Since the products are vitrified wastes, they scarcely show leaching property and are excellent in durability and stability. (Takahashi, M.)

  4. Capturing device for radioactive corrosion products

    International Nuclear Information System (INIS)

    Ono, Kiyoshi.

    1987-01-01

    Purpose: To render the flow channel area uniform for each of coolants over the entire capturing device and reduce the corrosion of capturing materials due to coolants. Constitution: Most of radioactivity caused by radioactive corrosion products are due to Mn-54 radioactive nuclides and it has been known that the nuclides are readily deposited to the surface of nickel material in sodium at high temperature. It is difficult in a conventional capturing device constituted by winding a nickel plate fabricated with protrusions in a multiple-coaxial configuration, that the flow channel area is reduced in a portion of the flow channel and it is difficult to make the flow of the coolants uniform. In view of the above, by winding a nickel plate having a plurality of protrusions at the surface formed integrally by way of an electrolytic process into a multiple-coaxial or spiral shape, those having high resistance to the coolant corrosion can be obtained. (Takahashi, M.)

  5. Dynamical chiral symmetry breaking and pion decay constant

    International Nuclear Information System (INIS)

    Gogohia, V.Sh.; Kluge, Gy.

    1991-08-01

    Flavour non-singlet, chiral axial-vector Ward-Takahashi identity is investigated in the framework of dynamical chiral symmetry breaking. The use of the condition of stationarity for the bound-state amplitude is proposed in order to fully determine this quantity and the regular piece of the corresponding axial vertex. This makes it possible to express the pion decay constant in terms of the quark propagator variables only. An exact expression was found for the pion decay constant in current algebra and in Jackiw-Johnson representation as well. We also find a new expression for the pion decay constant in the Pagels-Stokar-Cornwall variables within the framework of Jackiw-Johnson representation. (author) 22 refs.; 2 figs

  6. Canonical symmetry of a constrained Hamiltonian system and canonical Ward identity

    International Nuclear Information System (INIS)

    Li, Zi-ping

    1995-01-01

    An algorithm for the construction of the generators of the gauge transformation of a constrained Hamiltonian system is given. The relationships among the coefficients connecting the first constraints in the generator are made clear. Starting from the phase space generating function of the Green function, the Ward identity in canonical formalism is deduced. We point out that the quantum equations of motion in canonical form for a system with singular Lagrangian differ from the classical ones whether Dirac's conjecture holds true or not. Applications of the present formulation to the Abelian and non-Abelian gauge theories are given. The expressions for PCAC and generalized PCAC of the AVV vertex are derived exactly from another point of view. A new form of the Ward identity for gauge-ghost proper vertices is obtained which differs from the usual Ward-Takahashi identity arising from the BRS invariance

  7. Heat receiving plates in thermonuclear device

    International Nuclear Information System (INIS)

    Kitamura, Kazunori.

    1988-01-01

    Purpose: To obtain a heat receiving plate structure capable of withstanding sputtering wear and retaining the thermal deformation and residual stress low upon junction and available at a reduced cost. Constitution: Junction structures between heat sinks and armours are the same as usual, whereas high melting armour (for example, made of tungsten) are used at the portion on a heat receiving plate where the thermal load and particle load are higher while materials having a heat expansion coefficient similar to that of the heat sink (stainless steel) are used at the portion where the thermal load and particle load are lower on a heat receiving plate depending on the thermal load and particle load distribution. This can reduce the thermal deformation for the entire divertor heat receiving plate to obtain a heat receiving plate of a good surface dimensional accuracy. (Takahashi, M.)

  8. Aluminum alloy excellent in neutron absorbing performance

    International Nuclear Information System (INIS)

    Iida, Tetsuya; Tamamura, Tadao; Morimoto, Hiroyuki; Ouchi, Ken-ichiro.

    1987-01-01

    Purpose: To obtain structural materials made of aluminum alloys having favorable neutron absorbing performance and excellent in the performance as structural materials such as processability and strength. Constitution: Powder of Gd 2 O 3 as a gadolinium compound or metal gadolinium is uniformly mixed with the powder of aluminum or aluminum alloy. The amount of the gadolinium compound added is set to 0.1 - 30 % by weight. No sufficient neutron absorbing performance can be obtained if it is less than 0.1 % by weight, whereas the processability and mechanical property of the alloy are degraded if it exceeds 30 % by weight. Further, the grain size is set to less about 50 μm. Further, since the neutron absorbing performance varies greatly if the aluminum powder size exceeds 100 μm, the diameter is set to less than about 100 μm. These mixtures are molded in a hot press. This enables to obtain aimed structural materials. (Takahashi, M.)

  9. Modified Hitschfeld-Bordan Equations for Attenuation-Corrected Radar Rain Reflectivity: Application to Nonuniform Beamfilling at Off-Nadir Incidence

    Science.gov (United States)

    Meneghini, Robert; Liao, Liang

    2013-01-01

    As shown by Takahashi et al., multiple path attenuation estimates over the field of view of an airborne or spaceborne weather radar are feasible for off-nadir incidence angles. This follows from the fact that the surface reference technique, which provides path attenuation estimates, can be applied to each radar range gate that intersects the surface. This study builds on this result by showing that three of the modified Hitschfeld-Bordan estimates for the attenuation-corrected radar reflectivity factor can be generalized to the case where multiple path attenuation estimates are available, thereby providing a correction to the effects of nonuniform beamfilling. A simple simulation is presented showing some strengths and weaknesses of the approach.

  10. Nonlinear integral equations for thermodynamics of the sl(r + 1) Uimin-Sutherland model

    International Nuclear Information System (INIS)

    Tsuboi, Zengo

    2003-01-01

    We derive traditional thermodynamic Bethe ansatz (TBA) equations for the sl(r+1) Uimin-Sutherland model from the T-system of the quantum transfer matrix. These TBA equations are identical to the those from the string hypothesis. Next we derive a new family of nonlinear integral equations (NLIEs). In particular, a subset of these NLIEs forms a system of NLIEs which contains only a finite number of unknown functions. For r=1, this subset of NLIEs reduces to Takahashi's NLIE for the XXX spin chain. A relation between the traditional TBA equations and our new NLIEs is clarified. Based on our new NLIEs, we also calculate the high-temperature expansion of the free energy

  11. Point-splitting regularization of composite operators and anomalies

    International Nuclear Information System (INIS)

    Novotny, J.; Schnabl, M.

    2000-01-01

    The point-splitting regularization technique for composite operators is discussed in connection with anomaly calculation. We present a pedagogical and self-contained review of the topic with an emphasis on the technical details. We also develop simple algebraic tools to handle the path ordered exponential insertions used within the covariant and non-covariant version of the point-splitting method. The method is then applied to the calculation of the chiral, vector, trace, translation and Lorentz anomalies within diverse versions of the point-splitting regularization and a connection between the results is described. As an alternative to the standard approach we use the idea of deformed point-split transformation and corresponding Ward-Takahashi identities rather than an application of the equation of motion, which seems to reduce the complexity of the calculations. (orig.)

  12. Method of processing radioactive liquid waste

    International Nuclear Information System (INIS)

    Hasegawa, Akira; Kuribayashi, Hiroshi; Soda, Kenzo; Mihara, Shigeru.

    1988-01-01

    Purpose: To obtain satisfactory plastic solidification products rapidly and smoothly by adding oxidizers to radioactive liquid wastes. Method: Sulfuric acid, etc. are added to radioactive liquid wastes to adjust the pH value of the liquid wastes to less than 3.0. Then, ferrous sulfates are added such that the iron concentration in the liquid wastes is 100 mg/l. Then, after adjusting pH suitably to the drying powderization by adding alkali such as hydroxide, the liquid wastes are dried and powderized. The resultant powder is subjected to plastic solidification by using polymerizable liquid unsaturated polyester resins as the solidifying agent. The thus obtained solidification products are stable in view of the physical property such as strength or water proofness, as well as stable operation is possible even for those radioactive liquid wastes in which the content ingredients are unknown. (Takahashi, M.)

  13. Natural convection type reactor

    International Nuclear Information System (INIS)

    Nakayama, Takafumi; Horiuchi, Tetsuo; Moriya, Kimiaki; Matsumoto, Masayoshi; Akita, Minoru.

    1988-01-01

    Purpose: To improve the reliability by decreasing the number of dynamic equipments and safely shutdown the reactor core upon occurrence of accidents. Constitution: A pressure relief valve and a pressurizing tank or gravitational water falling tank disposed to the main steam pipe of a reactor are installed in combination. Upon loss-of-coolant accident, the pressure relief valve is opened to reduce the pressure in the reactor pressure vessel to the operation pressure for each of the tanks, thereby enabling to inject water in the pressurizing tank at first and, thereafter, water in the gravitational water falling tank successively to the inside of the pressure vessel. By utilizing the natural force in this way, the reliability can be improved as compared with the case of pumped water injection. Further, by injecting an aqueous boric acid to a portion of a plurality of tanks, if the control rod insertion becomes impossible, aqueous boric acid can be injected. (Takahashi, M.)

  14. Conformation radiotherapy and conformal radiotherapy

    International Nuclear Information System (INIS)

    Morita, Kozo

    1999-01-01

    In order to coincide the high dose region to the target volume, the 'Conformation Radiotherapy Technique' using the multileaf collimator and the device for 'hollow-out technique' was developed by Prof. S. Takahashi in 1960. This technique can be classified a type of 2D-dynamic conformal RT techniques. By the clinical application of this technique, the late complications of the lens, the intestine and the urinary bladder after radiotherapy for the maxillary cancer and the cervical cancer decreased. Since 1980's the exact position and shape of the tumor and the surrounding normal tissues can be easily obtained by the tremendous development of the CT/MRI imaging technique. As a result, various kinds of new conformal techniques such as the 3D-CRT, the dose intensity modulation, the tomotherapy have been developed since the beginning of 1990'. Several 'dose escalation study with 2D-/3D conformal RT' is now under way to improve the treatment results. (author)

  15. Method of removing deterioration product in hydrocarbon type solvent

    International Nuclear Information System (INIS)

    Ito, Yoshifumi; Takashina, Toru; Murasawa, Kenji.

    1988-01-01

    Purpose: To remarkably reduce radioactive wastes by bringing adsorbents comprising titanium oxide and/or zirconium oxide into contact with hydrocarbon type solvents. Method: In a nuclear fuel re-processing step, an appropriate processing is applied to extraction solvents suffering from radioactive degradation, to separate the hydrocarbon solvents and store them in a solvent tank. Then, titanium oxide and/or zirconium oxide adsorbents are continuously mixed and agitated therewith to adsorb degradation products on the adsorbents. Then, they are introduced with adsorbent separators to recover purified hydrocarbon type solvents. Meanwhile, the separated adsorbents are discharged from pipeways. This enables to regenerate the hydrocarbon type solvents for reuse, as well as remarkably reduce the radioactive wastes. (Takahashi, M.)

  16. A field-theoretic approach to non-equilibrium work identities

    International Nuclear Information System (INIS)

    Mallick, Kirone; Orland, Henri; Moshe, Moshe

    2011-01-01

    We study non-equilibrium work relations for a space-dependent field with stochastic dynamics (model A). Jarzynski's equality is obtained through symmetries of the dynamical action in the path-integral representation. We derive a set of exact identities that generalize the fluctuation-dissipation relations to non-stationary and far-from-equilibrium situations. These identities are prone to experimental verification. Furthermore, we show that a well-studied invariance of the Langevin equation under supersymmetry, which is known to be broken when the external potential is time dependent, can be partially restored by adding to the action a term which is precisely Jarzynski's work. The work identities can then be retrieved as consequences of the associated Ward-Takahashi identities.

  17. An annotated checklist of scale insects (Hemiptera: Coccoidea) of Saint Lucia, Lesser Antilles .

    Science.gov (United States)

    Malumphy, Chris

    2014-07-31

    An annotated list of 83 scale insect species (Hemiptera: Sterorrhyncha: Coccoidea) recorded from Saint Lucia is presented, based on data gathered from UK quarantine interceptions, samples collected in an urban coastal habitat in the North West of the Island in 2013, and published records. Thirty-three species (40%) are recorded for the first time for the country, including Dysmicoccus joannesiae (Costa Lima), a South American mealybug, and Poliaspoides formosana (Takahashi), an Asian armoured scale insect pest of bamboo, which are new for the Caribbean region. The economic, environmental and social impacts caused by introduced exotic species of scale insect are discussed. Two predatory midges Diadiplosis ?coccidivora (Felt) and Diadiplosis multifila (Felt) (Diptera: Cecidomyiidae) are recorded for the first time from Saint Lucia. The latter species was observed causing 90% mortality of a large infestation of passion vine mealybug Planococcus minor (Maskell) on soursop fruit. 

  18. Light-front zero-mode contribution to the Ward Identity

    International Nuclear Information System (INIS)

    Sales, J.H.O.; Suzuki, A.T.

    2010-01-01

    In a covariant gauge we implicitly assume that the Green's function propagates information from one point of the space-time to another, so that the Green's function is responsible for the dynamics of the relativistic particle. In the light front form one would naively expect that this feature would be preserved. In this manner, the fermionic field propagator can be split into a propagating piece and a non-propagating ('contact') term. Since the latter ('contact') one does not propagate information, and therefore, supposedly can be discarded with no harm to the field dynamics we wanted to know what would be the impact of dropping it off. To do that, we investigated its role in the Ward identity in the light front. Here we use the terminology Ward identity to identify the limiting case of photon's zero momentum transfer in the vertex from the more general Ward-Takahashi identity with nonzero momentum transfer.

  19. Boson-fermion mass splittings in four-dimensional heterotic string models with anomalous U(1) gauge groups

    International Nuclear Information System (INIS)

    Yamaguchi, Masahiro; Yamamoto, Hisashi; Onogi, Tetsuya

    1989-01-01

    In four-dimensional heterotic string models with anomalous U(1) gauge groups, space-time supersymmetry (SUSY) breaks down spontaneously at one loop. In this paper, the Ward-Takahashi identity of broken SUSY in one-loop two-point amplitudes is investigated in all generalities. The boson-fermion mass splitting of any supersymmetric pair in an arbitrary model is proportional to the product of the D-term expectation value (the sum of (chirality)x(U(1) charge) of massless fermions in the model) and the U(1) charge of the external particle. In order to give a better understanding of the results, we present some examples of the mass splittings in a simple Z 3 orbifold model. (orig.)

  20. Burnable poison rod

    International Nuclear Information System (INIS)

    Natsume, Tomohiro.

    1988-01-01

    Purpose: To increase the reactor core lifetime by decreasing the effect of neutron absorption of burnable poison rods by using material with less neutron absorbing effect. Constitution: Stainless steels used so far as the coating material for burnable poison rods have relatively great absorption in the thermal neutral region and are not preferred in view of the neutron economy. Burnable poison rods having fuel can made of zirconium alloy shows absorption the thermal neutron region lower by one digit than that of stainless steels but they shows absorption in the resonance region and the cost is higher. In view of the above, the fuel can of the burnable poison material is made of aluminum or aluminu alloy. This can reduce the neutron absorbing effect by stainless steel fuel can and effectively utilize neutrons that have been wastefully absorbed and consumed in stainless steels. (Takahashi, M.)

  1. Modeling single nucleotide polymorphisms in the human AKR1C1 and AKR1C2 genes: implications for functional and genotyping analyses.

    Directory of Open Access Journals (Sweden)

    Jonathan W Arthur

    2010-12-01

    Full Text Available Enzymes encoded by the AKR1C1 and AKR1C2 genes are responsible for the metabolism of progesterone and 5α-dihydrotestosterone (DHT, respectively. The effect of amino acid substitutions, resulting from single nucleotide polymorphisms (SNPs in the AKR1C2 gene, on the enzyme kinetics of the AKR1C2 gene product were determined experimentally by Takashi et al. In this paper, we used homology modeling to predict and analyze the structure of AKR1C1 and AKR1C2 genetic variants. The experimental reduction in enzyme activity in the AKR1C2 variants F46Y and L172Q, as determined by Takahashi et al., is predicted to be due to increased instability in cofactor binding, caused by disruptions to the hydrogen bonds between NADP and AKR1C2, resulting from the insertion of polar residues into largely non-polar environments near the site of cofactor binding. Other AKR1C2 variants were shown to involve either conservative substitutions or changes taking place on the surface of the molecule and distant from the active site, confirming the experimental finding of Takahashi et al. that these variants do not result in any statistically significant reduction in enzyme activity. The AKR1C1 R258C variant is predicted to have no effect on enzyme activity for similar reasons. Thus, we provide further insight into the molecular mechanism of the enzyme kinetics of these proteins. Our data also highlight previously reported difficulties with online databases.

  2. List of participants at SIDE IV meeting, Tokyo, 27 November--1 December 2000

    Science.gov (United States)

    2001-12-01

    Mark J Ablowitz, Vsevolod Adler, Mark Alber, Said Belmehdi, Marco Boiti, Claude Brezinski, R Bullough, Y M Chiang, Theodore Chihara, Peter A Clarkson, Robert Conte, Adam Doliwa, Vladimir Dorodnitsyn, Mitsuaki Eguchi, Claire Gilson, Basil Grammaticos, Valeri Gromak, Rod Halburd, Koji Hasegawa, Jarmo Hietarinta, Ryogo Hirota, Xing Biao Hu, M Idzumi, J Inoguchi, Hiroya Ishikara, Mourad Ismail, Shin Isojima, Kenichi Ito, Yoshiaki Itoh, Masashi Iwasaki, Klara Janglajew, Michio Jimbo, Nalini Joshi, Kenji Kajiwara, Saburo Kakei, Masaru Kamata, Satoshi Kamei, Rinat Kashaev, Shingo Kawai, Taeko Kimijima, K Kimura, Anatol Kirillov, Koichi Kondo, Boris Konopelchenko, Martin Kruskal, Atsuo Kuniba, Wataru Kunishima, Franklin Lambert, Serguei Leble, Decio Levi, Shigeru Maeda, Manuel Manas, Ken-Ichi Maruno, Tetsu Masuda, J Matsukidaira, Atsushi Matsumiya, Shigeki Matsutani, Yukitaka Minesaki, Mikio Murata, Micheline Musette, Atsushi Nagai, Katsuya Nakagawa, Atsushi Nakamula, Akira Nakamura, Yoshimasa Nakamura, Frank Nijhoff, J J C Nimmo, Katsuhiro Nishinari, Michitomo Nishizawa, A Nobe, Masatoshi Noumi, Yaeko Ohsaki, Yasuhiro Ohta, Kazuo Okamoto, Alexandre Orlov, Naoki Osada, Flora Pempinelli, Spiro Pyrlis, Reinout Quispel, Orlando Ragnisco, Alfred Ramani, Jean-Pierre Ramis, Andreas Ruffing, Simon Ruijsenaars, Satoru Saito, Noriko Saitoh, Hidetaka Sakai, Paulo Santini, Narimasa Sasa, Ryu Sasaki, Yoshikatsu Sasaki, Junkichi Satsuma, Sergei Sergeev, Nobuhiko Shinzawa, Evgueni Sklyanin, Juris Suris, Norio Suzuki, Yukiko Tagami, Katsuaki Takahashi, Daisuke Takahashi, Tomoyuki Takenawa, Yoshiro Takeyama, K M Tamizhmani, T Tamizhmani, Kouichi Toda, Morikatsu Toda, Tetsuji Tokihiro, Takayuki Tsuchida, Yohei Tsuchiya, Teruhisa Tsuda, Satoru Tsujimoto, Walter Van Assche, Claude Viallet, Luc Vinet, Shinsuke Watanabe, Yoshihida Watanabe, Ralph Willox, Pavel Winternitz, Yasuhiko Yamada, Yuji Yamada, Jin Yoneda, Haruo Yoshida, Katsuhiko Yoshida, Daisuke Yoshihara, Fumitaka Yura, J

  3. PREFACE: International Symposium on Molecular Conductors: Novel Functions of Molecular Conductors under Extreme Conditions (ISMC 2008)

    Science.gov (United States)

    Takahashi, Toshihiro; Suzumura, Yoshikazu

    2008-02-01

    The International Symposium on Molecular Conductors 2008 (ISMC2008) was held as the second international symposium of the project entitled `Novel Functions of Molecular Conductors under Extreme Conditions', which was supported by the Grant-in-aid for Scientific Research on Priority Areas from the Ministry of Education, Culture, Sports, Science and Technology in Japan. The project lasted from September 2003 to March 2008, and was completed by this symposium held at Okazaki Conference Center, Institute for Molecular Science, Okazaki, Japan (23-25 July 2008), which about 100 scientists attended. During the symposium, five project teams gave summary talks and exciting talks were given on the topics developed recently not only by the members of the project but also by other scientists including invited speakers from abroad, who are doing active research on molecular conductors. It is expected that papers presented in the symposium will give valuable hints for the next step in the research of this field. Therefore the organizers of this symposium decided to publish this proceedings in order to demonstrate these activities, not only for the local community of the project, but also for the broad society of international scientists who are interested in molecular conductors. The editors, who are also the organizers of this symposium, believe that this proceedings provides a significant and relevant contribution to the field of molecular conductors since it is the first time we have published such a proceedings as an electronic journal. We note that all papers published in this volume of Journal of Physics: Conference Series have been peer reviewed by expert referees. Editors made every effort to satisfy the criterion of a proceedings journal published by IOP Publishing. Toshihiro Takahashi and Yoshikazu Suzumura Editors: Toshihiro Takahashi (Gakushuin University) (Chairman) Kazushi Kanoda (University of Tokyo) Seiichi Kagoshima (University of Tokyo) Takehiko Mori (Tokyo

  4. Predictors of antipsychotic monotherapy with olanzapine during a 1-year naturalistic study of schizophrenia patients in Japan

    Directory of Open Access Journals (Sweden)

    Ye W

    2012-01-01

    Full Text Available Wenyu Ye1, Haya Ascher-Svanum2, Jennifer A Flynn3, Yuka Tanji3, Michihiro Takahashi3,41Lilly Suzhou Pharmaceutical Co, Shanghai, People's Republic of China; 2Eli Lilly and Company, Indianapolis, IN, USA; 3Lilly Research Laboratories Japan, Eli Lilly Japan K.K., Kobe, 4Terauchi-Takahashi Psychiatric Clinic, Ashiya, JapanPurpose: Although expert guidelines for the treatment of schizophrenia recommend antipsychotic monotherapy, the use of antipsychotic polypharmacy is common. This study identified characteristics that differentiate patients with schizophrenia who are treated with olanzapine monotherapy versus polypharmacy in usual care in Japan.Patients and methods: In a large (N = 1850 prospective, observational study, Japanese patients with schizophrenia who initiated treatment with olanzapine were followed for 1 year. Consistent with past research, antipsychotic polypharmacy was defined as the concurrent use of olanzapine and another antipsychotic for at least 60 days. Switching was defined as discontinuing a prior antipsychotic therapy rather than augmenting the medication regimen. Predictors of antipsychotic monotherapy were based on information available at the time of olanzapine initiation. Baseline characteristics were compared using t-tests and Χ2 tests. Stepwise logistic regression was used to identify independent predictors of monotherapy.Results: Patients treated with olanzapine monotherapy (43.2% differed from those treated with antipsychotic polypharmacy (56.8% on demographics, treatment history, baseline symptom levels, functional levels, and treatment-emergent adverse events. Stepwise logistic regression identified multiple variables that significantly predicted monotherapy: older age, shorter duration of schizophrenia, outpatient status, comorbid medical conditions, lower body mass index, no prior anticholinergic use, no prior mood stabilizer use, and switching from a previous antipsychotic (typical or atypical

  5. Oxygen enhances phosphine toxicity for postharvest pest control.

    Science.gov (United States)

    Liu, Yong-Biao

    2011-10-01

    Phosphine fumigations under superatmospheric oxygen levels (oxygenated phosphine fumigations) were significantly more effective than the fumigations under the normal 20.9% atmospheric oxygen level against western flower thrips [Frankliniella occidentalis (Pergande)] adults and larvae, leafminer Liriomyza langei Frick pupae, grape mealybug [Pseudococcus maritimus (Ehrhorn)] eggs, and Indianmeal moth [Plodia interpunctella (Hübner)] eggs and pupae. In 5-h fumigations with 1,000 ppm phosphine at 5 degrees C, mortalities of western flower thrips increased significantly from 79.5 to 97.7% when oxygen was increased from 20.9 to 40% and reached 99.3% under 80% O2. Survivorships of leafminer pupae decreased significantly from 71.2% under 20.9% O2 to 16.2% under 40% O2 and reached 1.1% under 80% O2 in 24-h fumigations with 500 ppm phosphine at 5 degrees C. Complete control of leafminer pupae was achieved in 24-h fumigations with 1,000 ppm phosphine at 5 degrees C under 60% O2 or higher. Survivorships of grape mealybug eggs also decreased significantly in 48-h fumigations with 1,000 ppm phosphine at 2 degrees C under 60% O2 compared with the fumigations under 20.9% O2. Indian meal moth egg survivorships decreased significantly from 17.4 to 0.5% in responses to an oxygen level increase from 20.9 to 40% in 48-h fumigations with 1,000 ppm phosphine at 10 degrees C and reached 0.2% in fumigations under 80% O2. When the oxygen level was reduced from 20.9 to 15 and 10% in fumigations, survivorships of Indianmeal moth eggs increased significantly from 17.4 to 32.9 and 39.9%, respectively. Increased O2 levels also resulted in significantly lower survival rates of Indianmeal moth pupae in response to 24-h fumigations with 500 and 1,000 ppm phosphine at 10 degrees C and a complete control was achieved in the 1,000 ppm phosphine fumigations under 60% O2. Oxygenated phosphine fumigations have marked potential to improve insecticidal efficacy. Advantages and limitations of oxygenated

  6. Seasonal calcareous nannoplankton and other biogenic particle fluxes for 1990-2009: twenty-year long records from the central subarctic Pacific Ocean and the Bering Sea

    Science.gov (United States)

    Takahashi, Kozo; Tsutsui, Hideto

    2017-04-01

    Time-series sediment traps were deployed for nearly 20 years (1990-2009) at two long-term locations: Station SA (49°N, 174°W, trap depth 4,800 m, water depth 5,400 m) in the central subarctic Pacific, and Station AB (53.5°N, 177°W, trap depth 3,200 m, water depth 3,800 m) in the southern Bering Sea. Among many biogenic particles, calcareous nannoplankton represented nearly half or more of the entire calcium carbonate fluxes of the regions. Dominant taxa include Coccolithus pelagicus and Emiliania huxleyi. The flux maxima of the former taxon occurred twice a year during June and October-November, whereas that of the latter taxon only occurred primarily once a year in November at both stations, indicating environmental preferences of the taxa. Among many environmental conditions, the fluxes of Emiliania huxleyi showed strong correlations with both water temperatures above 45 m depth and air temperatures (these parameters taken with one-month lag [earlier values] considering sinking time of ca. a month to the respective trap depths). Coccolithus pelagicus, on the other hand, showed lower values in the correlation with temperatures (Tsutsui et al., 2016), indicating that this taxon is somewhat more dependent on other factors such as nutrients compared to those of E. huxleyi. The timings of the seasonal flux maxima of calcareous nannoplankton are quite different from and later than those of other taxonomic groups such as diatoms and silicoflagellates. The primary seasonal flux maxima of diatoms and silicoflagellates, for example, occurred in May, a month earlier than the June maximum of C. pelagicus, and secondary seasonal flux maxima occurred in August, 2-3 months earlier than those of calcareous nannoplankton at both stations, based on 8 year flux records for diatoms (Onodera and Takahashi, 2009) and 4 year records for silicoflagellates (Onodera and Takahashi, 2012). By examining seasonal changes of nitrate and phosphate concentrations above 50 m depth from ERDDAP

  7. Resolved granular debris-flow simulations with a coupled SPH-DCDEM model

    Science.gov (United States)

    Birjukovs Canelas, Ricardo; Domínguez, José M.; Crespo, Alejandro J. C.; Gómez-Gesteira, Moncho; Ferreira, Rui M. L.

    2016-04-01

    Debris flows represent some of the most relevant phenomena in geomorphological events. Due to the potential destructiveness of such flows, they are the target of a vast amount of research (Takahashi, 2007 and references therein). A complete description of the internal processes of a debris-flow is however still an elusive achievement, explained by the difficulty of accurately measuring important quantities in these flows and developing a comprehensive, generalized theoretical framework capable of describing them. This work addresses the need for a numerical model applicable to granular-fluid mixtures featuring high spatial and temporal resolution, thus capable of resolving the motion of individual particles, including all interparticle contacts. This corresponds to a brute-force approach: by applying simple interaction laws at local scales the macro-scale properties of the flow should be recovered by upscaling. This methodology effectively bypasses the complexity of modelling the intermediate scales by resolving them directly. The only caveat is the need of high performance computing, a demanding but engaging research challenge. The DualSPHysics meshless numerical implementation, based on Smoothed Particle Hydrodynamics (SPH), is expanded with a Distributed Contact Discrete Element Method (DCDEM) in order to explicitly solve the fluid and the solid phase. The model numerically solves the Navier-Stokes and continuity equations for the liquid phase and Newton's motion equations for solid bodies. The interactions between solids are modelled with classical DEM approaches (Kruggel-Emden et al, 2007). Among other validation tests, an experimental set-up for stony debris flows in a slit check dam is reproduced numerically, where solid material is introduced trough a hopper assuring a constant solid discharge for the considered time interval. With each sediment particle undergoing tens of possible contacts, several thousand time-evolving contacts are efficiently treated

  8. Comparative effectiveness of switching paroxetine formulation for treatment of major depressive disorder: an open-label multicenter study

    Directory of Open Access Journals (Sweden)

    Otsubo T

    2018-04-01

    Full Text Available Tempei Otsubo,1 Yoshinori Watanabe,2,3 Seiji Hongo,3 Mikichika Inoue,4 Kimiko Akimoto,4 Ken Murakami,5 Ryutaro Takahashi,6 Toshiaki Kikuchi7 1Department of Psychiatry, Tokyo Women’s Medical University Medical Center East, Tokyo, Japan; 2Himorogi Psychiatric Institute, Tokyo, Japan; 3Nanko Clinic of Psychiatry, Shirakawa, Japan; 4Ikebukuro Internal Medicine, Tokyo, Japan; 5Murakami Hospital, Tokyo, Japan; 6Takahashi Clinic, Tokyo, Japan; 7Department of Neuropsychiatry, Keio University School of Medicine, Tokyo, Japan Aim: To assess the effectiveness and safety of switching the antidepressant formulation from immediate-release (IR to controlled-release (CR paroxetine in patients with major depressive disorder (MDD. Patients and methods: A total of 113 outpatients with MDD diagnosed according to the Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition, Text Revision, and treated with a stable dose of IR paroxetine for at least 6 months were enrolled. Patients were then switched to CR paroxetine for 8 weeks. Effectiveness was evaluated by scores on the Himorogi Self-Rating Depression/Anxiety Scales (HSDS/HSAS and the Clinical Global Impression – Severity (CGI-S. Safety was evaluated based on the reported adverse drug reactions (ADRs. Medication satisfaction and preference were assessed based on questionnaire responses using Likert-type scales. Results: The overall patient HSDS/HSAS scores significantly improved after switching from IR to CR paroxetine (P<0.001. Furthermore, CR paroxetine was superior to IR paroxetine (P<0.001 according to the results of the CGI-S evaluation. ADRs were experienced by 14 (12.4% patients, including dry mouth, nausea/vomiting, somnolence/drowsiness, and wakefulness/arousal during sleep. Satisfaction and preference for paroxetine improved after switching to the CR formulation (P<0.001; chi-square test. Conclusion: These results suggest that switching the treatment from IR to CR paroxetine could

  9. The promotion effect of coexisting hygroscopic composition on the reaction between oxalic acid and calcite during humidifying process

    Science.gov (United States)

    Ma, Q.; He, H.

    2012-12-01

    Internally mixed oxalic acid with mineral dust has been frequently detected in field measurements (Sullivan and Prather, 2007; Wang et al., 2012; Yang et al., 2009). Meanwhile, Furukawa and Takahashi (Furukawa and Takahashi, 2011) found that most of the oxalic acid in mineral mixture is present as metal oxalate complexes in the aerosols, however, the formation mechanism of these complexes is not well known. It was reported that cloud process of H2C2O4/CaCO3 mixture could lead to the formation of calcium oxalate (Gierlus et al., 2012). Recently, we used Raman spectroscopy to investigate the hygroscopic behavior of H2C2O4/CaCO3 mixture below saturation condition as well as the effect of coexisting hygroscopic compositions, e.g. Ca(NO3)2, NaCl, NH4NO3, and (NH4)2SO4. It was found that there was no interaction between H2C2O4 and calcite without third component during humidifying process under ambient condition. In contrast, the presence of coexisting Ca(NO)3, NaCl, or NH4NO3 could promote the reaction between H2C2O4 and calcite by providing an aqueous circumstance after deliquescence, resulting in the formation of calcium oxalate hydrates. Moreover, substitution of strong acid (HNO3) by medium acid (H2C2O4) occurred when water vapor was absorbed in Ca(NO3)2/H2C2O4 mixture (Ma and He, 2012). As for (NH4)2SO4, there existed a competition effect between (NH4)2SO4 and H2C2O4 for the reaction with CaCO3. CaCO3 was preferentially reacted with (NH4)2SO4 to form gypsum in the solution, while the residual NH4+ and C2O42- ions were bonded to (NH4)2C2O4 after efflorescence. These results implies a potential formation pathway of metal oxalate complexes in the atmosphere and also suggests that synergistic effect between different constituents in humidifying process of mixed particles should be considered in future hygroscopic behavior studies.

  10. Predictors of continuation with olanzapine during the 1-year naturalistic treatment of patients with schizophrenia in Japan

    Directory of Open Access Journals (Sweden)

    Ye W

    2011-12-01

    Full Text Available Wenyu Ye1, Haya Ascher-Svanum2, Yuka Tanji3, Jennifer A Flynn3, Michihiro Takahashi3,41Lilly Suzhou Pharmaceutical Co, Shanghai, People’s Republic of China; 2Eli Lilly and Company, Indianapolis, IN, USA; 3Lilly Research Laboratories Japan, Eli Lilly Japan KK, Kobe, 4Terauchi-Takahashi Psychiatric Clinic, Ashiya, JapanPurpose: Treatment continuation is considered an important measure of antipsychotic effectiveness in schizophrenia, reflecting the medication’s efficacy, safety, and tolerability from both patients’ and clinicians’ perspectives. This study identified characteristics of patients with schizophrenia who continue olanzapine therapy for a 1-year period in Japan.Methods: In a large (N = 1850, prospective, observational study, Japanese patients with schizophrenia who initiated treatment with olanzapine were followed for 1 year. Baseline characteristics were compared using t-tests and chi-square tests. Stepwise logistic regression was used to identify independent baseline predictors of treatment continuation.Results: Most patients (68.2% continued with olanzapine therapy for the full 1-year study period, with an average duration of 265.5 ± 119.4 days. At baseline, patients who continued were significantly more likely to be male, older, and inpatients; have longer illness duration, higher negative and cognitive symptoms, better health-related quality of life, and prior anticholinergic use. Continuers were significantly less likely to engage in social activities, live independently, work for pay, or have prior antidepressant use. Continuers showed significantly greater early (3-month improvement in global symptom severity. Logistic regression found that continuation was significantly predicted by longer illness duration, lower positive symptoms, higher negative symptoms, and better health-related quality of life.Conclusions: In this large naturalistic study in Japan, most patients with schizophrenia stayed on olanzapine therapy for

  11. Three-dimensional distribution of random velocity inhomogeneities at the Nankai trough seismogenic zone

    Science.gov (United States)

    Takahashi, T.; Obana, K.; Yamamoto, Y.; Nakanishi, A.; Kaiho, Y.; Kodaira, S.; Kaneda, Y.

    2012-12-01

    The Nankai trough in southwestern Japan is a convergent margin where the Philippine sea plate is subducted beneath the Eurasian plate. There are major faults segments of huge earthquakes that are called Tokai, Tonankai and Nankai earthquakes. According to the earthquake occurrence history over the past hundreds years, we must expect various rupture patters such as simultaneous or nearly continuous ruptures of plural fault segments. Japan Agency for Marine-Earth Science and Technology (JAMSTEC) conducted seismic surveys at Nankai trough in order to clarify mutual relations between seismic structures and fault segments, as a part of "Research concerning Interaction Between the Tokai, Tonankai and Nankai Earthquakes" funded by Ministry of Education, Culture, Sports, Science and Technology, Japan. This study evaluated the spatial distribution of random velocity inhomogeneities from Hyuga-nada to Kii-channel by using velocity seismograms of small and moderate sized earthquakes. Random velocity inhomogeneities are estimated by the peak delay time analysis of S-wave envelopes (e.g., Takahashi et al. 2009). Peak delay time is defined as the time lag from the S-wave onset to its maximal amplitude arrival. This quantity mainly reflects the accumulated multiple forward scattering effect due to random inhomogeneities, and is quite insensitive to the inelastic attenuation. Peak delay times are measured from the rms envelopes of horizontal components at 4-8Hz, 8-16Hz and 16-32Hz. This study used the velocity seismograms that are recorded by 495 ocean bottom seismographs and 378 onshore seismic stations. Onshore stations are composed of the F-net and Hi-net stations that are maintained by National Research Institute for Earth Science and Disaster Prevention (NIED) of Japan. It is assumed that the random inhomogeneities are represented by the von Karman type PSDF. Preliminary result of inversion analysis shows that spectral gradient of PSDF (i.e., scale dependence of

  12. Dyson-Schwinger equations in quantum electrodynamics

    International Nuclear Information System (INIS)

    Slim, H.A.

    1981-01-01

    A quantum field theory is completely determined by the knowledge of its Green functions and this thesis is concerned with the Salam and Delbourgo approximation method for the determination of the Green functions. In chapter 2 a Lorentz covariant, canonical formulation for quantum electrodynamics is described. In chapter 3 the definition of the Green functions in quantum electrodynamics is given with a derivation of the Dyson-Schwinger equations. The Ward-Takahashi identities, which are a consequence of current conservation, are derived and finally renormalization is briefly mentioned and the equations for the renormalized quantities are given. The gauge transformations, changing the gauge-parameter, a, discussed in Chapter 2 for the field operators, also have implications for the Green functions, and these are worked out in Chapter 4 for the electron propagator, which is not gauge-invariant. Before developing the main approximation, a simple, non-relativistic model is studied in Chapter 5. It has the feature of being exactly solvable in a way which closely resembles the approximation method of Chapter 6 for relativistic quantum electrodynamics. There the Dyson-Schwinger equations for the electron and photon propagator are studied. In chapter 7, the Johnson-Baker-Willey program of finite quantum electrodynamics is considered, in connection with the Ansatz of Salam and Delbourgo, and the question of a possible fixed point of the coupling constant is considered. In the last chapter, some remarks are made about how the results of the approximation scheme can be improved. (Auth.)

  13. Perceived parental affectionless control is associated with high neuroticism

    Directory of Open Access Journals (Sweden)

    Takahashi N

    2017-04-01

    Full Text Available Nana Takahashi, Akihito Suzuki, Yoshihiko Matsumoto, Toshinori Shirata, Koichi Otani Department of Psychiatry, Yamagata University School of Medicine, Yamagata, Japan Objective: Depressed patients are prone to perceive that they were exposed to affectionless control by parents. Meanwhile, high neuroticism is a well-established risk factor for developing depression. Therefore, this study examined whether perceived parental affectionless control is associated with high neuroticism.Methods: The subjects were 664 healthy Japanese volunteers. Perceived parental care and protection were assessed by the Parental Bonding Instrument. Parental rearing was categorized into either optimal parenting (high care/low protection or three dysfunctional parenting styles including affectionless control (low care/high protection. Neuroticism was evaluated by the NEO Personality Inventory-Revised.Results: The subjects with paternal affectionless control had higher neuroticism scores than those with paternal optimal parenting. Similar tendency was observed in maternal rearing. Neuroticism scores increased in a stepwise manner with respect to the increase in the number of parents with affectionless control.Conclusion: The present study shows that perceived parental affectionless control is associated with high neuroticism, suggesting that this parental style increases neuroticism in recipients. Keywords: parenting, attachment, personality, vulnerability, depression, PBI, NEO PI-R

  14. X-ray excited optical luminescence, photoluminescence, photostimulated luminescence and x-ray photoemission spectroscopy studies on BaFBr:Eu

    CERN Document Server

    Subramanian, N; Govinda-Rajan, K; Mohammad-Yousuf; Santanu-Bera; Narasimhan, S V

    1997-01-01

    The results of x-ray excited optical luminescence (XEOL), photoluminescence (PL), photostimulated luminescence (PSL) and x-ray photoemission spectroscopy (XPS) studies on the x-ray storage phosphor BaFBr:Eu are presented in this paper. Analyses of XEOL, PL and PSL spectra reveal features corresponding to the transitions from 4f sup 6 td sup 1 to 4f sup 7 configurations in different site symmetries of Eu sup 2 sup +. Increasing x-ray dose is seen to lead to a red shift in the maximum of the PL excitation spectrum for the 391 nm emission. The XEOL and XPS spectra do not show any signature of Eu sup 3 sup + in the samples studied by us, directly raising doubts about the model of Takahashi et al in which Eu sup 2 sup + is expected to ionize to Eu sup 3 sup + upon x-ray irradiation and remain stable until photostimulation. XEOL and PSL experiments with simultaneous x-ray irradiation and He - Ne laser excitation as well as those with sequential x-ray irradiation and laser stimulation bring out the competition betwe...

  15. Measurements of time dependent energy spectra of neutrons in a small graphite assembly

    International Nuclear Information System (INIS)

    Fujita, Yoshiaki; Sakamoto, Shigeyasu; Aizawa, Otohiko; Takahashi, Akito; Sumita, Kenji.

    1975-01-01

    The time-dependent energy spectra of neutrons have been measured in a small 30x30x30 cm 3 graphite assembly by means of the linac-chopper method, with a view to establishing experimental evidence that there is no asymptotic spectrum in such a small assembly, and in order to study the non-asymptotic behavior of neutrons. The arrangement of a polyethylene pre-moderator adjacent to the assembly made the measurements possible with the improvement obtained thereby of the neutron counting statistics. It was indicated from calculation that the presence of the pre-moderator had little effect - at least above the Bragg cut-off energy - on the evolution in time of the energy spectra of neutrons in the graphite assembly. The experimental results indicated very probable disappearance of asymptotic spectra, and revealed significant enhancement of trapping at Bragg energies with the lapse of time. This is consistent with the results of pulsed neutron experiments in small assemblies conducted by Takahashi et al., and falls in line with de Saussure's approximation. The spectra in the graphite assembly showed significant space dependence, the spectra becoming harder with increasing distance from the pre-moderator. This hardening may be attributed to the relatively faster propagation of higher energy neutrons. (auth.)

  16. Association of cognitive judgment and shyness with frequency and quality of flow experience

    Directory of Open Access Journals (Sweden)

    Hirao K

    2012-11-01

    Full Text Available Kazuki Hirao, Ryuji Kobayashi, Kenji YabuwakiDepartment of Occupational Therapy, School of Health Science and Social Welfare, Kibi International University, Takahashi City, Okayama, JapanObjective: To determine the association of cognitive judgment and shyness with frequency and quality of flow experience.Design and methods: This was a cross-sectional survey of the relationship between psychological tendency and frequency and quality of flow experience in 68 college students, undertaken in Hiroshima, Japan. The predictors were Shyness Scale scores, measure of ambiguity tolerance scores, and Life Orientation Test scores, and the outcome was the frequency and quality of flow experience.Results: The results of the binary logistic regression analysis indicated that only the measure of ambiguity tolerance (P = 0.02, odds ratio = 1.06, and 95% confidence interval = 1.01–1.11 was a predictor of the quality of flow experience, and only the Shyness Scale (P = 0.007, odds ratio = 0.95, and 95% confidence interval = 0.91–0.98 was a predictor of the frequency of flow experience.Conclusion: The findings suggest that ambiguity tolerance and shyness are associated with the frequency and quality of the flow experience.Keywords: Flow experience, positive psychology, shyness, ambiguity tolerance, life orientation

  17. COMMITTEES: SQM2009 - 14th International Conference on Strangeness in Quark Matter SQM2009 - 14th International Conference on Strangeness in Quark Matter

    Science.gov (United States)

    2008-04-01

    Local Organizing Committee Takeshi Kodama Chair, UFRJ Jun Takahashi Co-chair, UNICAMP Ignácio Bediaga e Hickman CBPF Eduardo Fraga UFRJ Frederique Grassi USP Yogiro Hama USP Gastão Krein IFT Erasmo Madureira Ferreira UFRJ Marcelo G. Munhoz USP Fernando Navarra USP Sandra Padula IFT Alejandro Szanto de Toledo USP César Augusto Zen Vasconcellos UFRGS International Advisory Committee Jörg Aichelin Nantes Federico Antinori Padova Tamás Biró Budapest Peter Braun-Munzinger GSI Jean Cleymans Cape Town Láaszló Csernai Bergen Timothy Hallman BNL Huan Zhong Huang UCLA Takeshi Kodama Rio de Janeiro Yu-Gang Ma Shanghai Jes Madsen Aarhus Ágnes Mócsy Pratt University Berndt Müller Duke University Grazyna Odyniec LBNL Helmut Oeschler Darmstadt Johann Rafelski Arizona Hans Georg Ritter LBNL Gunther Rolland MIT Karel Šafařík CERN Ladislav Sandor Kosice University Jack Sandweiss Yale University George S F Stephans MIT Horst Stöcker Frankfurt Larry McLerranBNL Helmut Satz Universitä Bielefeld Nu Xu LBNL Fuqiang Wang Purdue University William A. Zajc Columbia University Pengfei Zhuang Tsinghua University

  18. QED with minimal and nonminimal couplings: on the quantum generation of Lorentz violating terms in the pure photon sector

    Energy Technology Data Exchange (ETDEWEB)

    Gazzola, G.; Fargnoli, H.G.; Sampaio, Marcos; Nemes, M.C. [Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, MG (Brazil); Scarpelli, A.P. Baeta [Departamento de Policia Federal (DPF), Sao Paulo, SP (Brazil). Setor Tecnico-Cientifico

    2011-07-01

    In this research we consider a modified version of quantum electrodynamics in four dimensions with the coupling between the photon and the fermion composed by two terms: a nonminimal and the minimal one. There are two interesting aspects in this model. First, gauge invariance is restored by the presence of the minimal coupling. Second, the quantum corrections will allow for the possibility of the generation of a Chern-Simons-like term. The fact that the model is gauge invariant allows for a more complete analysis on the value of both the coefficients of the hypothetical CPT odd and CPT even radiatively generated terms. A question that arises involves a possible violation of some Ward-Takahashi identity when radiative corrections are taken into account. In other words, is there an anomaly in the model? We show that, since conventional QED is gauge invariant, there is no room for a non transversal vacuum polarization tensor in the present model. This is study is to be presented in the following order: first we are to present the model; second we do an analysis on the generation of Lorentz violating terms in the pure gauge sector; third we carry out a calculation on gauge invariance grounds to fix the coefficients of the quantum corrections; and lastly the concluding comments. (author)

  19. Practical algebraic renormalization

    International Nuclear Information System (INIS)

    Grassi, Pietro Antonio; Hurth, Tobias; Steinhauser, Matthias

    2001-01-01

    A practical approach is presented which allows the use of a non-invariant regularization scheme for the computation of quantum corrections in perturbative quantum field theory. The theoretical control of algebraic renormalization over non-invariant counterterms is translated into a practical computational method. We provide a detailed introduction into the handling of the Slavnov-Taylor and Ward-Takahashi identities in the standard model both in the conventional and the background gauge. Explicit examples for their practical derivation are presented. After a brief introduction into the Quantum Action Principle the conventional algebraic method which allows for the restoration of the functional identities is discussed. The main point of our approach is the optimization of this procedure which results in an enormous reduction of the calculational effort. The counterterms which have to be computed are universal in the sense that they are independent of the regularization scheme. The method is explicitly illustrated for two processes of phenomenological interest: QCD corrections to the decay of the Higgs boson into two photons and two-loop electroweak corrections to the process B→X s γ

  20. Southern hemisphere ocean CO2 uptake: reconciling atmospheric and oceanic estimates

    International Nuclear Information System (INIS)

    Roy, T.; Matear, R.; Rayner, P.; Francey, R.

    2003-01-01

    Using an atmospheric inversion model we investigate the southern hemisphere ocean CO 2 uptake. From sensitivity studies that varied both the initial ocean flux distribution and the atmospheric data used in the inversion, our inversion predicted a total (ocean and land) uptake of 1.65-1.90 Gt C/yr. We assess the consistency between the mean southern hemisphere ocean uptake predicted by an atmospheric inversion model for the 1991-1997 period and the T99 ocean flux estimate based on observed pCO 2 in Takahashi et al. (2002; Deep-Sea Res II, 49, 1601-1622). The inversion can not match the large 1.8 Gt C/yr southern extratropical (20-90 deg S) uptake of the T99 ocean flux estimate without producing either unreasonable land fluxes in the southern mid-latitudes or by increasing the mismatches between observed and simulated atmospheric CO 2 data. The southern extratropical uptake is redistributed between the mid and high latitudes. Our results suggest that the T99 estimate of the Southern Ocean uptake south of 50 deg S is too large, and that the discrepancy reflects the inadequate representation of wintertime conditions in the T99 estimate

  1. Bridging the gap between metallurgy and fatigue reliability of hydraulic turbine runners

    International Nuclear Information System (INIS)

    Thibault, D; Gagnon, M; Godin, S

    2014-01-01

    The failure of hydraulic turbine runners is a very rare event. Hence, in order to assess the reliability of these components, one cannot rely on statistical models based on the number of failures in a given population. However, as there is a limited number of degradation mechanisms involved, it is possible to use physically-based reliability models. Such models are more complicated but have the advantage of being able to account for physical parameters in the prediction of the evolution of runner degradation. They can therefore propose solutions to help improve reliability. With the use of such models, the effect of materials properties on runner reliability can easily be illustrated. This paper will present a brief review of the Kitagawa-Takahashi diagram that links the damage tolerance approach, based on fracture mechanics, to the stress or strain-life approaches. This diagram is at the centre of the reliability model used in this study. Using simplified response spectra obtained from on-site runner stress measurements, the paper will show how fatigue reliability is impacted by materials fatigue properties, namely fatigue crack propagation behaviour and fatigue limit obtained on S-N curves. It will also present a review of the most important microstructural features of 13%Cr- 4%Ni stainless steels used for runner manufacturing and will review how they influence fatigue properties in an effort to bridge the gap between metallurgy and turbine runners reliability

  2. Device for processing regenerative wastes of ion exchange resin

    International Nuclear Information System (INIS)

    Kuroda, Osamu; Ebara, Katsuya; Shindo, Toshikazu; Takahashi, Sankichi

    1986-01-01

    Purpose: To facilitate the operation and maintenance of a processing device by dividing radioactive wastes produced in the regenerative process of ion exchange resin into a regenerated usable recovery liquid and wastes. Constitution: Sulfuric acid is recovered by a diffusion dialysis method from wastes containing sulfuric acid that are generated in the regenerative process of cation-exchange resin and also caustic soda is recovered by the diffusion dialysis method from wastes containing caustic soda that are generated in the regenerative process of anion-exchange resin. The sulfuric acid and caustic soda thus recovered are used for the regeneration of ion-exchange resin. A concentrator is provided for concentrating the sulfuric acid and caustic soda water solution to concentration suitable for the regeneration of these ion-exchange resins. Also provided is a recovery device for recovering water generated from the concentrator. This device is of so simple a constitution that its operation and maintenance can be performed very easily, thereby greatly reducing the quantity of waste liquid required to be stored in drums. (Takahashi, M.)

  3. Revisiting the identification and cDNA cloning of T cell-replacing factor/interleukin-5

    Directory of Open Access Journals (Sweden)

    Kiyoshi eTakatsu

    2014-12-01

    Full Text Available This is a perspective based on the paper Cloning of complementary DNA encoding T cell replacing factor and identity with B cell growth factor II, by Kinashi T, Harada N, Severinson E, Tanabe T, Sideras P, Konishi M, Azuma C, Tominaga A, Bergstedt-Lindqvist S, Takahashi M, Matsuda F, Yaoita Y, Takatsu K, and Honjo, T. Nature (1986 32(6092: 70-3. We have been interested in understanding the molecular basis of T-B cell cooperation for antibody formation. Although many investigators had described a number of different soluble factors that appeared to have biological relevance to T-B cell interactions, molecular basis of such active substances remained unknown for a long period of time. In this perspective, I will briefly summarize the history of the initial discovery of T cell-replacing factor/B cell growth factor II that appeared to be involved in B-cell growth and differentiation, and outline the discovery and characterization of interleukin-5. Studies of interleukin-5 have provided strong evidence that a single cytokine exerts a variety of activities on diverse target cells.

  4. Critical appraisal and pooled analysis of telmisartan alone or in combination with hydrochlorothiazide for achieving blood pressure goals

    Directory of Open Access Journals (Sweden)

    Satoshi Morimoto

    2010-06-01

    Full Text Available Satoshi Morimoto, Nobuyuki Takahashi, Tatsuyori Morita, Kazunori Someya, Nagaoki Toyoda, Toshiji IwasakaSecond Department of Internal Medicine, Kansai Medical University 2-3-1, Shinmachi, Hirakata, Osaka 573-1191, JapanAbstract: Rigid control of blood pressure (BP is essential to prevent cardiovascular disease. However, only about 40% of hypertensive patients undergoing pharmacological intervention with a single agent achieve their BP goals in contemporary clinical practice. Combined therapy using currently available agents is effective in maximizing treatment outcome, although it raises medical costs and decreases the drug compliance rate. To overcome such negative consequences, a combination tablet containing an angiotensin II receptor blocker (ARB with a small dose of hydrochlorothiazide (HCTZ is now available on the international market, including Japan. This article briefly describes the unique properties of telmisartan, a highly selective ARB for the angiotensin II type 1 receptor, including its long-acting characteristics and recent prospective multicenter randomized clinical trials, followed by a description of a newly-introduced combination tablet in Japan, which contains telmisartan and HCTZ. This article also reviews its safety and efficacy based on currently available evidence. Finally, evidence comparing telmisartan/HCTZ with other combination therapies is presented.Keywords: angiotensin II receptor blocker, ARB, blood pressure, hypertension, diuretics, PPAR-γ

  5. Bow hull-form optimization in waves of a 66,000 DWT bulk carrier

    Directory of Open Access Journals (Sweden)

    Jin-Won Yu

    2017-09-01

    Full Text Available This paper uses optimization techniques to obtain bow hull form of a 66,000 DWT bulk carrier in calm water and in waves. Parametric modification functions of SAC and section shape of DLWL are used for hull form variation. Multi-objective functions are applied to minimize the wave-making resistance in calm water and added resistance in regular head wave of λ/L = 0.5. WAVIS version 1.3 is used to obtain wave-making resistance. The modified Fujii and Takahashi's formula is applied to obtain the added resistance in short wave. The PSO algorithm is employed for the optimization technique. The resistance and motion characteristics in calm water and regular and irregular head waves of the three hull forms are compared. It has been shown that the optimal brings 13.2% reduction in the wave-making resistance and 13.8% reduction in the added resistance at λ/L = 0.5; and the mean added resistance reduces by 9.5% at sea state 5.

  6. A systematic approach to sketch Bethe-Salpeter equation

    Directory of Open Access Journals (Sweden)

    Qin Si-xue

    2016-01-01

    Full Text Available To study meson properties, one needs to solve the gap equation for the quark propagator and the Bethe-Salpeter (BS equation for the meson wavefunction, self-consistently. The gluon propagator, the quark-gluon vertex, and the quark–anti-quark scattering kernel are key pieces to solve those equations. Predicted by lattice-QCD and Dyson-Schwinger analyses of QCD’s gauge sector, gluons are non-perturbatively massive. In the matter sector, the modeled gluon propagator which can produce a veracious description of meson properties needs to possess a mass scale, accordingly. Solving the well-known longitudinal Ward-Green-Takahashi identities (WGTIs and the less-known transverse counterparts together, one obtains a nontrivial solution which can shed light on the structure of the quark-gluon vertex. It is highlighted that the phenomenologically proposed anomalous chromomagnetic moment (ACM vertex originates from the QCD Lagrangian symmetries and its strength is proportional to the magnitude of dynamical chiral symmetry breaking (DCSB. The color-singlet vector and axial-vector WGTIs can relate the BS kernel and the dressed quark-gluon vertex to each other. Using the relation, one can truncate the gap equation and the BS equation, systematically, without violating crucial symmetries, e.g., gauge symmetry and chiral symmetry.

  7. Spurious solutions in few-body equations

    International Nuclear Information System (INIS)

    Adhikari, S.K.; Gloeckle, W.

    1979-01-01

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

  8. iPS Cells—The Triumphs and Tribulations

    Directory of Open Access Journals (Sweden)

    Riddhi Sharma

    2016-06-01

    Full Text Available The year 2006 will be remembered monumentally in science, particularly in the stem cell biology field, for the first instance of generation of induced pluripotent stem cells (iPSCs from mouse embryonic/adult fibroblasts being reported by Takahashi and Yamanaka. A year later, human iPSCs (hiPSCs were generated from adult human skin fibroblasts by using quartet of genes, Oct4, Sox2, Klf4, and c-Myc. This revolutionary technology won Yamanaka Nobel Prize in Physiology and Medicine in 2012. Like human embryonic stem cells (hESCs, iPSCs are pluripotent and have the capability for self-renewal. Moreover, complications of immune rejection for therapeutic applications would be greatly eliminated by generating iPSCs from individual patients. This has enabled their use for drug screening/discovery and disease modelling in vitro; and for immunotherapy and regenerative cellular therapies in vivo, paving paths for new therapeutics. Although this breakthrough technology has a huge potential, generation of these unusual cells is still slow, ineffectual, fraught with pitfalls, and unsafe for human use. In this review, I describe how iPSCs are being triumphantly used to lay foundation for a fully functional discipline of regenerative dentistry and medicine, alongside discussing the challenges of translating therapies into clinics. I also discuss their future implications in regenerative dentistry field.

  9. Introduction to thematic minireview series: Development of human therapeutics based on induced pluripotent stem cell (iPSC) technology.

    Science.gov (United States)

    Rao, Mahendra; Gottesfeld, Joel M

    2014-02-21

    With the advent of human induced pluripotent stem cell (hiPSC) technology, it is now possible to derive patient-specific cell lines that are of great potential in both basic research and the development of new therapeutics for human diseases. Not only do hiPSCs offer unprecedented opportunities to study cellular differentiation and model human diseases, but the differentiated cell types obtained from iPSCs may become therapeutics themselves. These cells can also be used in the screening of therapeutics and in toxicology assays for potential liabilities of therapeutic agents. The remarkable achievement of transcription factor reprogramming to generate iPSCs was recognized by the award of the Nobel Prize in Medicine to Shinya Yamanaka in 2012, just 6 years after the first publication of reprogramming methods to generate hiPSCs (Takahashi, K., Tanabe, K., Ohnuki, M., Narita, M., Ichisaka, T., Tomoda, K., and Yamanaka, S. (2007) Cell 131, 861-872). This minireview series highlights both the promises and challenges of using iPSC technology for disease modeling, drug screening, and the development of stem cell therapeutics.

  10. A Comparative View on Human Somatic Cell Sources for iPSC Generation

    Directory of Open Access Journals (Sweden)

    Stefanie Raab

    2014-01-01

    Full Text Available The breakthrough of reprogramming human somatic cells was achieved in 2006 by the work of Yamanaka and Takahashi. From this point, fibroblasts are the most commonly used primary somatic cell type for the generation of induced pluripotent stem cells (iPSCs. Various characteristics of fibroblasts supported their utilization for the groundbreaking experiments of iPSC generation. One major advantage is the high availability of fibroblasts which can be easily isolated from skin biopsies. Furthermore, their cultivation, propagation, and cryoconservation properties are uncomplicated with respect to nutritional requirements and viability in culture. However, the required skin biopsy remains an invasive approach, representing a major drawback for using fibroblasts as the starting material. More and more studies appeared over the last years, describing the reprogramming of other human somatic cell types. Cells isolated from blood samples or urine, as well as more unexpected cell types, like pancreatic islet beta cells, synovial cells, or mesenchymal stromal cells from wisdom teeth, show promising characteristics for a reprogramming strategy. Here, we want to highlight the advantages of keratinocytes from human plucked hair as a widely usable, noninvasive harvesting method for primary material in comparison with other commonly used cell types.

  11. Cleaning device for fuel assemblies

    International Nuclear Information System (INIS)

    Kita, Kaoru.

    1986-01-01

    Purpose: To completely remove obstacles deposited to the lower sides of supporting lattices for fuel assemblies by utilizing water within a pit before reloading of the fuel assemblies. Constitution: A cylindrical can, to which a fuel assembly is inserted through the upper end opening thereof, is vertically disposed within water of a pit and the bottom of the can is communicated with a pump by way of a suction pipe and a filter device disposed out of the pit. While on the other hand, a fuel assembly is suspended downwardly by a crane and inserted to the inside of the can through the upper end of the opening thereof and supported therein followed by starting the pump. As a result, water in the pit is circulated through the inside of the can, suction pipe, filtering device, pump, discharge pipe and to the inside of the pit thereby enabling to completely eliminate obstacles deposited to the lower surface, etc. of supporting lattices for the fuel assembly supported within the can. (Takahashi, M.)

  12. Multiloop stringlike formulas for QED

    International Nuclear Information System (INIS)

    Lam, C.S.

    1993-01-01

    Multiloop gauge-theory amplitudes written in the Feynman-parameter representation are poised to take advantage of two important developments of the past decade: the spinor-helicity technique and the superstring reorganization. The former has been considered in a previous paper; the latter will be elaborated in this paper. We show here how to write multiloop stringlike formulas in the Feynman-parameter representation for any diagram in QED, including those involving other nonelectromagnetic interactions, provided the internal photon lines are not adjacent to any external photon line. The general connection between the Feynman-parameter approach and the superstring and/or first-quantized approach is discussed. In the special case of a one-loop multiphoton amplitude, these formulas reduce to the ones obtained by the superstring and the first-quantized methods. The stringlike formulas exhibit a simple gauge structure which makes the Ward-Takahashi identity apparent, and enables the integration-by-parts technique of Bern and Kosower to be applied, so that gauge-invariant parts can be extracted diagram by diagram with the seagull vertex neglected

  13. Investigations on the Structure Tectonics, Geophysics, Geochemistry, and Hydrocarbon Potential of the Black Mesa Basin, Northeastern Arizona

    Energy Technology Data Exchange (ETDEWEB)

    Barker, Colin; Carroll, Herbert; Erickson, Richard; George, Steve; Guo, Genliang; Reeves,T.K.; Sharma, Bijon; Szpakiewicz, Michael; Volk, Len

    1999-04-27

    The U.S. Department of Energy (DOE) has instituted a basin-analysis study program to encourage drilling in underexplored and unexplored areas and increase discovery rates for hydrocarbons by independent oil companies within the continental United States. The work is being performed at the DOE's National Institute for Petroleum and Energy Research (NIPER) in Bartlesville, Oklahoma, by the Exploration and Drilling Group within BDM-Oklahoma (BDM), the manager of the facility for DOE. Several low-activity areas in the Mid-Continent, west, and southwest were considered for the initial study area (Reeves and Carroll 1994a). The Black Mesa region in northwestern Arizona is shown on the U.S. Geological Survey 1995 oil and gas map of the United States as an undrilled area, adapted from Takahashi and Gautier 1995. This basin was selected by DOE s the site for the initial NIPER-BDM survey to develop prospects within the Lower-48 states (Reeves and Carroll 1994b).

  14. Using genetic algorithm to solve a new multi-period stochastic optimization model

    Science.gov (United States)

    Zhang, Xin-Li; Zhang, Ke-Cun

    2009-09-01

    This paper presents a new asset allocation model based on the CVaR risk measure and transaction costs. Institutional investors manage their strategic asset mix over time to achieve favorable returns subject to various uncertainties, policy and legal constraints, and other requirements. One may use a multi-period portfolio optimization model in order to determine an optimal asset mix. Recently, an alternative stochastic programming model with simulated paths was proposed by Hibiki [N. Hibiki, A hybrid simulation/tree multi-period stochastic programming model for optimal asset allocation, in: H. Takahashi, (Ed.) The Japanese Association of Financial Econometrics and Engineering, JAFFE Journal (2001) 89-119 (in Japanese); N. Hibiki A hybrid simulation/tree stochastic optimization model for dynamic asset allocation, in: B. Scherer (Ed.), Asset and Liability Management Tools: A Handbook for Best Practice, Risk Books, 2003, pp. 269-294], which was called a hybrid model. However, the transaction costs weren't considered in that paper. In this paper, we improve Hibiki's model in the following aspects: (1) The risk measure CVaR is introduced to control the wealth loss risk while maximizing the expected utility; (2) Typical market imperfections such as short sale constraints, proportional transaction costs are considered simultaneously. (3) Applying a genetic algorithm to solve the resulting model is discussed in detail. Numerical results show the suitability and feasibility of our methodology.

  15. The KP Hierarchy and Aspects of the Painlevé Property

    Science.gov (United States)

    Strampp, W.; Langer, C.

    1990-12-01

    We are concerned with the conjecture that the Painlevé property is a necessary condition for the integrability of nonlinear equations. Following a suggestion by lietratures (1) D. V. Chudnovsky, G. V. Chudnovsky and M. Tabor, Phys. Lett. 97A (1983), 268, and 2) A. K. Pogrebkov, Inverse Problems 5 (1989), L7), our investigations will be based on the Lax-pair which we use in Sato's sense (3) E. Date, M. Jimbo, M. Kashiwara and T. Miwa in Nonlinear Integrable Systems-Classical and Quantum Theory, ed. M. Jimbo and T. Miwa (World Scientific, Singapore, 1983), p. 39, 4) M. Jimbo and T. Miwa, Publ. RIMS, Kyoto Univ. 19 (1983), 943, 5) Y. Ohta, J. Satsuma, D. Takahashi and T. Tokihiro, Prog. Theor. Phys. Suppl. No. 94 (1988), 210). Leading orders, branch points and resonances are described for the Zakharov-Shabat equations of the KP-hierarchy. The symbolic manipulation system REDUCE, in particular its factorization algorithm for polynomials, is employed for finding the resonances. It is shown that the Painlevé structures of various nonlinear equations, which have been discussed a lot in the literature, follow from our results.

  16. QED with minimal and nonminimal couplings: on the quantum generation of Lorentz violating terms in the pure photon sector

    International Nuclear Information System (INIS)

    Gazzola, G.; Fargnoli, H.G.; Sampaio, Marcos; Nemes, M.C.; Scarpelli, A.P. Baeta

    2011-01-01

    In this research we consider a modified version of quantum electrodynamics in four dimensions with the coupling between the photon and the fermion composed by two terms: a nonminimal and the minimal one. There are two interesting aspects in this model. First, gauge invariance is restored by the presence of the minimal coupling. Second, the quantum corrections will allow for the possibility of the generation of a Chern-Simons-like term. The fact that the model is gauge invariant allows for a more complete analysis on the value of both the coefficients of the hypothetical CPT odd and CPT even radiatively generated terms. A question that arises involves a possible violation of some Ward-Takahashi identity when radiative corrections are taken into account. In other words, is there an anomaly in the model? We show that, since conventional QED is gauge invariant, there is no room for a non transversal vacuum polarization tensor in the present model. This is study is to be presented in the following order: first we are to present the model; second we do an analysis on the generation of Lorentz violating terms in the pure gauge sector; third we carry out a calculation on gauge invariance grounds to fix the coefficients of the quantum corrections; and lastly the concluding comments. (author)

  17. Energy-momentum tensor in quantum field theory

    International Nuclear Information System (INIS)

    Fujikawa, K.

    1981-01-01

    The definition of the energy-momentum tensor as a source current coupled to the background gravitational field receives an important modification in quantum theory. In the path-integral approach, the manifest covariance of the integral measure under general coordinate transformations dictates that field variables with weight 1/2 should be used as independent integration variables. An improved energy-momentum tensor is then generated by the variational derivative, and it gives rise to well-defined gravitational conformal (Weyl) anomalies. In the flat--space-time limit, all the Ward-Takahashi identities associated with space-time transformations including the global dilatation become free from anomalies in terms of this energy-momentum tensor, reflecting the general covariance of the integral measure; the trace of this tensor is thus finite at zero momentum transfer for renormalizable theories. The Jacobian for the local conformal transformation, however, becomes nontrivial, and it gives rise to an anomaly for the conformal identity. All the familiar anomalies are thus reduced to either chiral or conformal anomalies. The consistency of the dilatation and conformal identities at vanishing momentum transfer determines the trace anomaly of this energy-momentum tensor in terms of the renormalization-group b function and other parameters. In contrast, the trace of the conventional energy-momentum tensor generally diverges even at vanishing momentum transfer depending on the regularization scheme, and it is subtractively renormalized. We also explain how the apparently different renormalization properties of the chiral and trace anomalies arise

  18. Compound and Geometry-Dependent Pre-Compound Models to Calculate the Nuclear Data for Fusion Reactors

    International Nuclear Information System (INIS)

    Jahn, Helmut

    2005-01-01

    Compound and geometry-dependent pre-compound nuclear reactions are very useful concepts of nuclear theory to calculate cross sections of neutrons of around 14 MeV and below scattered by nuclei of material of installations producing energy of nuclear fusion. If these concepts are used to discuss and improve the experimental data they have to be completed by DWBA-type contributions to the small-step region of the incident neutron which can account for the angular distribution of the scattered neutron because there is the difficulty to separate experimentally the incoming from the scattered beam. The angle integrated cross-section in this region can be shown to be accounted for the surface dependent components of Blanns geometry-dependent precompound mechanism of the statistical state density and level density contributions of the compound and precompound components beeing calculated according to the recent developments of Anzaldo using the analytic number theory. The experimental data have been taken from the results of Hermsdorf, Meister, Sassonov, Seeliger, Seidel, Shahin and of A.Takahashi

  19. Monthly dynamics of carbon dioxide exchange across the sea surface of the Arctic Ocean in response to changes in gas transfer velocity and partial pressure of CO2 in 2010

    Directory of Open Access Journals (Sweden)

    Iwona Wrobel

    2017-10-01

    Full Text Available The Arctic Ocean (AO is an important basin for global oceanic carbon dioxide (CO2 uptake, but the mechanisms controlling air–sea gas fluxes are not fully understood, especially over short and long timescales. The oceanic sink of CO2 is an important part of the global carbon budget. Previous studies have shown that in the AO differences in the partial pressure of CO2 (ΔpCO2 and gas transfer velocity (k both contribute significantly to interannual air–sea CO2 flux variability, but that k is unimportant for multidecadal variability. This study combined Earth Observation (EO data collected in 2010 with the in situ pCO2 dataset from Takahashi et al. (2009 (T09 using a recently developed software toolbox called FluxEngine to determine the importance of k and ΔpCO2 on CO2 budgets in two regions of the AO – the Greenland Sea (GS and the Barents Sea (BS with their continental margins. Results from the study indicate that the variability in wind speed and, hence, the gas transfer velocity, generally play a major role in determining the temporal variability of CO2 uptake, while variability in monthly ΔpCO2 plays a major role spatially, with some exceptions.

  20. Contribution of short-lived nuclides to decay heat

    International Nuclear Information System (INIS)

    Katakura, Jun-ichi

    1987-01-01

    Comments are made on the calculation of decay heat, centering on evaluation of average decay energy. It is difficult to obtain sufficiently useful decay diagrams of short lived nucleides. High-energy levels are often missing in inferior decay diagrams, leading to an overestimation of the intensity of beta-rays at low-energy levels. Such an overestimation or underestimation due to the inferiority of a decay diagram is referred to as pandemonium effect. The pandemonium effect can be assessed by means of the ratio of the measured energy of the highest level of the daughter nuclide to the Q β -value of the beta-decay. When a satisfactory decay diagram cannot be obtained, the average decay energy has to be estimated by theoretical calculation. The gross theory for beta-decay proposed by Yamada and Takahashi is employed for the calculation. To carry out the calculation according to this theory, it is required to determine the value for the parameter Q 00 , the lowest energy of the daughter nuclide that meets the selection rule for beta-decay. Currently, Q 00 to be used for this purpose is estimated from data on the energy of the lowest level found in a decay diagram, even if it is inferior. Some examples of calculation of decay heat using the average beta- or gamma-ray energy are shown and compared with measurements. (author)

  1. RELATION BETWEEN PRECIPITATION AND INITIATION OF DEBRIS FLOWS IN THE JIANGJIA RAVINE,YUNNAN PROVINCE, SOUTHWEST CHINA

    Institute of Scientific and Technical Information of China (English)

    Zili FENG; Peng CUI; Xiaoqing CHEN; Jie CHEN

    2006-01-01

    In the Jiangjia Ravine, debris flows are often triggered by short-duration rainstorms frequently. To reveal the unique initiation process of debris flows, rainfall and debris flow initiation in an upstream area was continually observed. It is concluded that flash floods resulting from short-duration rainstorms play a key role in the initiation of debris flows. Surface runoff forms flash floods due to special topographic conditions. The flash floods mobilize the sediment deposits in the upper section of the branch gullies,hence, high density viscous debris flows initiate. The initiation of debris flows in the Jiangjia Ravine has a close relation with precipitation. Applying the Takahashi model of debris flow initiation, it is concluded that: to mobilize cohesive deposits in the gully bed the depth of flash floods must exceed a critical depth. This critical depth of floods makes the definition of thresholds of rainfall intensity possible. Considering the change in the initial infiltration rate at different initial water content of bank slopes, and the influence of antecedent precipitation on the initial water content, the relation between the thresholds of rainfall intensity and the antecedent precipitation show good agreement with the empirical relation established by previous research.

  2. Flavor symmetry breaking and meson masses

    International Nuclear Information System (INIS)

    Bhagwat, Mandar S.; Roberts, Craig D.; Chang Lei; Liu Yuxin; Tandy, Peter C.

    2007-01-01

    The axial-vector Ward-Takahashi identity is used to derive mass formulas for neutral pseudoscalar mesons. Flavor symmetry breaking entails nonideal flavor content for these states. Adding that the η ' is not a Goldstone mode, exact chiral-limit relations are developed from the identity. They connect the dressed-quark propagator to the topological susceptibility. It is confirmed that in the chiral limit the η ' mass is proportional to the matrix element which connects this state to the vacuum via the topological susceptibility. The implications of the mass formulas are illustrated using an elementary dynamical model, which includes an Ansatz for that part of the Bethe-Salpeter kernel related to the non-Abelian anomaly. In addition to the current-quark masses, the model involves two parameters, one of which is a mass-scale. It is employed in an analysis of pseudoscalar- and vector-meson bound-states. While the effects of SU(N f =2) and SU(N f =3) flavor symmetry breaking are emphasized, the five-flavor spectra are described. Despite its simplicity, the model is elucidative and phenomenologically efficacious; e.g., it predicts η-η ' mixing angles of ∼-15 deg. and π 0 -η angles of ∼1 deg

  3. Visual-Haptic Integration: Cue Weights are Varied Appropriately, to Account for Changes in Haptic Reliability Introduced by Using a Tool

    Directory of Open Access Journals (Sweden)

    Chie Takahashi

    2011-10-01

    Full Text Available Tools such as pliers systematically change the relationship between an object's size and the hand opening required to grasp it. Previous work suggests the brain takes this into account, integrating visual and haptic size information that refers to the same object, independent of the similarity of the ‘raw’ visual and haptic signals (Takahashi et al., VSS 2009. Variations in tool geometry also affect the reliability (precision of haptic size estimates, however, because they alter the change in hand opening caused by a given change in object size. Here, we examine whether the brain appropriately adjusts the weights given to visual and haptic size signals when tool geometry changes. We first estimated each cue's reliability by measuring size-discrimination thresholds in vision-alone and haptics-alone conditions. We varied haptic reliability using tools with different object-size:hand-opening ratios (1:1, 0.7:1, and 1.4:1. We then measured the weights given to vision and haptics with each tool, using a cue-conflict paradigm. The weight given to haptics varied with tool type in a manner that was well predicted by the single-cue reliabilities (MLE model; Ernst and Banks, 2002. This suggests that the process of visual-haptic integration appropriately accounts for variations in haptic reliability introduced by different tool geometries.

  4. Solid state ionics: a Japan perspective

    Science.gov (United States)

    Yamamoto, Osamu

    2017-12-01

    The 70-year history of scientific endeavor of solid state ionics research in Japan is reviewed to show the contribution of Japanese scientists to the basic science of solid state ionics and its applications. The term 'solid state ionics' was defined by Takehiko Takahashi of Nagoya University, Japan: it refers to ions in solids, especially solids that exhibit high ionic conductivity at a fairly low temperature below their melting points. During the last few decades of exploration, many ion conducting solids have been discovered in Japan such as the copper-ion conductor Rb4Cu16I7Cl13, proton conductor SrCe1-xYxO3, oxide-ion conductor La0.9Sr0.9Ga0.9Mg0.1O3, and lithium-ion conductor Li10GeP2S12. Rb4Cu16I7Cl13 has a conductivity of 0.33 S cm-1 at 25 °C, which is the highest of all room temperature ion conductive solid electrolytes reported to date, and Li10GeP2S12 has a conductivity of 0.012 S cm-1 at 25 °C, which is the highest among lithium-ion conductors reported to date. Research on high-temperature proton conducting ceramics began in Japan. The history, the discovery of novel ionic conductors and the story behind them are summarized along with basic science and technology.

  5. A high-frequency EPR study of a new S = 10 Mn12 single-molecule magnet

    Science.gov (United States)

    Anderson, Norm

    2005-03-01

    We will present a detailed angle-resolved high-frequency EPR study of a recently discovered analog of the Mn12-acetate single-molecule magnet (SMM). Like the acetate, the new complex [Mn12O12(O2CCH2Bu^t)16(CH3OH)4].CH3OH (Mn12-tBuAc), possesses a spin S = 10 ground state and S4 site symmetry. Magnetic measurements also reveal the usual resonant magnetization tunneling steps in the low temperature hysteresis loops. However, we show that the solvent-disorder-induced anomalies reported in the EPR spectra for Mn12-acetate^1 are absent for Mn12-tBuAc. This suggests that Mn12-tBuAc is intrinsically cleaner, and that detailed studies of this compound may reveal important new information concerning the quantum dynamics of large spins. Indeed, our analysis of the EPR line widths suggest that they are close to the intrinsic lifetime broadened limit, which may make it possible to extract information concerning electronic relaxation times (T1 and T2). ^1S. Takahashi et al., Phys. Rev. B 70, 094429 (2004)

  6. A hybrid method for the parallel computation of Green's functions

    International Nuclear Information System (INIS)

    Petersen, Dan Erik; Li Song; Stokbro, Kurt; Sorensen, Hans Henrik B.; Hansen, Per Christian; Skelboe, Stig; Darve, Eric

    2009-01-01

    Quantum transport models for nanodevices using the non-equilibrium Green's function method require the repeated calculation of the block tridiagonal part of the Green's and lesser Green's function matrices. This problem is related to the calculation of the inverse of a sparse matrix. Because of the large number of times this calculation needs to be performed, this is computationally very expensive even on supercomputers. The classical approach is based on recurrence formulas which cannot be efficiently parallelized. This practically prevents the solution of large problems with hundreds of thousands of atoms. We propose new recurrences for a general class of sparse matrices to calculate Green's and lesser Green's function matrices which extend formulas derived by Takahashi and others. We show that these recurrences may lead to a dramatically reduced computational cost because they only require computing a small number of entries of the inverse matrix. Then, we propose a parallelization strategy for block tridiagonal matrices which involves a combination of Schur complement calculations and cyclic reduction. It achieves good scalability even on problems of modest size.

  7. The effect of leg hyperthermia using far infrared rays in bedridden subjects with type 2 diabetes mellitus.

    Science.gov (United States)

    Kawaura, Akihiko; Tanida, Noritoshi; Kamitani, Masato; Akiyama, Junichi; Mizutani, Masatoshi; Tsugawa, Naoko; Okano, Toshio; Takeda, Eiji

    2010-04-01

    We examined the effect of leg hyperthermia on oxidative stress in bedridden subjects with type 2 diabetes mellitus using 15-min sessions of far infrared rays over a two-week period. Four subjects (male 1, female 3) incapacitated by a stroke were recruited for this study. All patients were admitted to Takahashi Central Hospital and ate the same hospital meals. Fasting plasma glucose, HbA1c, tumor necrosis factor (TNF)alpha, free fatty acid, leptin, adiponectin and plasma 8-epi-prostaglandin F2alpha (8-epi-PGF2alpha) levels as a marker of oxidative stress were measured on admission, just before and 2 weeks after local heating of the leg. Results showed that plasma total 8-epi-PGF2alpha levels were decreased significantly while TNFalpha levels were increased significantly. On the other hand, glucose, HbA1c, free fatty acid, leptin and adiponectin levels were not changed during the study period. These results suggest that repeated leg hyperthermia may protect against oxidative stress.

  8. Method of manufacturing nuclear fuel pellet

    International Nuclear Information System (INIS)

    Oguma, Masaomi; Masuda, Hiroshi.

    1988-01-01

    Purpose: To prevent pellet destruction due to thermal stresses and reduce the swelling or issue of corrosive gaseous fission products. Method: Raw material powder for nuclear fuel pellets constitute so-called secondary particles in which a plurality of primary particles are coagulated. The degree of coagulation of the secondary particles can be determined as the bulk density of the powder. In view of the above, when pellets are sintered by using a powder mixture comprising a powder having the same constitution and different bulk density from the main raw powder as the sub-raw material powder incorporated to the main raw material powder, the pellet tissue provides such a fine porous structure that fine gaps are present a the periphery of high density secondary particles, since there is a difference in the shrinkage factor (sintering-shrinkage degree) between powders of different secondary particle densities in the course of the sintering. Thus, pellets can be prevented from thermal impact destruction and cause no destructive cracks. (Takahashi, M.)

  9. Supersymmetry breaking at finite temperature

    International Nuclear Information System (INIS)

    Kratzert, K.

    2002-11-01

    The mechanism of supersymmetry breaking at finite temperature is still only partly understood. Though it has been proven that temperature always breaks supersymmetry, the spontaneous nature of this breaking remains unclear, in particular the role of the Goldstone fermion. The aim of this work is to unify two existing approaches to the subject. From a hydrodynamic point of view, it has been argued under very general assumptions that in any supersymmetric quantum field theory at finite temperature there should exist a massless fermionic collective excitation, named phonino because of the analogy to the phonon. In the framework of a self-consistent resummed perturbation theory, it is shown for the example of the Wess-Zumino model that this mode fits very well into the quantum field theoretical framework pursued by earlier works. Interpreted as a bound state of boson and fermion, it contributes to the supersymmetric Ward-Takahashi identities in a way showing that supersymmetry is indeed broken spontaneously with the phonino playing the role of the Goldstone fermion. The second part of the work addresses the case of supersymmetric quantum electrodynamics. It is shown that also here the phonino exists and must be interpreted as the Goldstone mode. This knowledge allows a generalization to a wider class of models. (orig.)

  10. Analysis of (n, 2n) multiplication in lead

    International Nuclear Information System (INIS)

    Segev, M.

    1984-01-01

    Lead is being considered as a possible amplifier of neutrons for fusion blankets. A simple one-group model of neutron multiplications in Pb is presented. Given the 14 MeV neutron cross section on Pb, the model predicts the multiplication. Given measured multiplications, the model enables the determination of the (n, 2n) and transport cross sections. Required for the model are: P-the collision probability for source neutrons in the Pb body-and W- an average collision probability for non-virgin, non-degraded neutrons. In simple geometries, such as a source in the center of a spherical shell, P and an approximate W can be expressed analytically in terms of shell dimensions and the Pb transport cross section. The model was applied to Takahashi's measured multiplications in Pb shells in order to understand the apparent very high multiplicative power of Pb. The results of the analysis are not consistent with basic energy-balance and cross section magnitude constraints in neutron interaction theory. (author)

  11. Correction to: Ephedra Herb extract activates/desensitizes transient receptor potential vanilloid 1 and reduces capsaicin-induced pain.

    Science.gov (United States)

    Nakamori, Shunsuke; Takahashi, Jun; Hyuga, Sumiko; Tanaka-Kagawa, Toshiko; Jinno, Hideto; Hyuga, Masashi; Hakamatsuka, Takashi; Odaguchi, Hiroshi; Goda, Yukihiro; Hanawa, Toshihiko; Kobayashi, Yoshinori

    2018-03-01

    The article Ephedra Herb extract activates/desensitizes transient receptor potential vanilloid 1 and reduces capsaicin-induced pain, written by Shunsuke Nakamori, Jun Takahashi, Sumiko Hyuga, Toshiko Tanaka-Kagawa, Hideto Jinno, Masashi Hyuga, Takashi Hakamatsuka, Hiroshi Odaguchi, Yukihiro Goda, Toshihiko Hanawa and Yoshinori Kobayashi, was originally published Online First without open access. After publication in volume 71, issue 1, page 105-113 the author decided to opt for Open Choice and to make the article an open access publication. Therefore, the copyright of the article has been changed to © The Author(s) 2018 and the article is forthwith distributed under the terms of the Creative Commons Attribution 4.0 International License ( http://creativecommons.org/licenses/by/4.0/ ), which permits use, duplication, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

  12. Stable operation of a high-power piezoelectric transformer comprising two identical bolt-clamped Langevin-type transducers and a stepped horn

    Science.gov (United States)

    Adachi, Kazunari; Suzuki, Kohei; Shibamata, Yuki

    2018-06-01

    We previously developed a 100 W piezoelectric transformer comprising two identical bolt-clamped Langevin-type transducers (BLTs) and a stepped horn whose cross-sectional area ratio determines the specified step-up voltage transformation ratio. Unlike conventional piezoelectric transformers, this transformer is driven at a frequency quite near its mechanical resonance, and thus can be mechanically held firmly at its clearly identified vibratory node without mechanical energy loss. However, it has been revealed that the high-power operation of the transformer often becomes very unstable owing to the “jumping and dropping” phenomena first found by Takahashi and Hirose [Jpn. J. Appl. Phys. 31, 3055 (1992)]. To avoid this instability, we have investigated the peculiar phenomena, and found that they can be attributed to a heavily distorted electric field inside the piezoelectric ceramic disks of the BLT on the primary side of the transformer being driven by a low-impedance voltage source near the mechanical resonance. The resultant concentration of the electric field leads to the local reversal of piezoelectric polarization in every half period of the vibration, viz., the instability. Consequently, we have developed a scheme for the steady high-power operation of this type of piezoelectric transformer and examined its validity experimentally. The method has eventually improved the linearity and power transfer efficiency of the transformer significantly.

  13. Low energy theorems of hidden local symmetries

    International Nuclear Information System (INIS)

    Harada, Masayasu; Kugo, Taichiro; Yamawaki, Koichi.

    1994-01-01

    We prove to all orders of the loop expansion the low energy theorems of hidden local symmetries in four-dimensional nonlinear sigma models based on the coset space G/H, with G and H being arbitrary compact groups. Although the models are non-renormalizable, the proof is done in an analogous manner to the renormalization proof of gauge theories and two-dimensional nonlinear sigma models by restricting ourselves to the operators with two derivatives (counting a hidden gauge boson field as one derivative), i.e., with dimension 2, which are the only operators relevant to the low energy limit. Through loop-wise mathematical induction based on the Ward-Takahashi identity for the BRS symmetry, we solve renormalization equation for the effective action up to dimension-2 terms plus terms with the relevant BRS sources. We then show that all the quantum corrections to the dimension-2 operators, including the finite parts as well as the divergent ones, can be entirely absorbed into a re-definition (renormalization) of the parameters and the fields in the dimension-2 part of the tree-level Lagrangian. (author)

  14. BWR type reactor

    International Nuclear Information System (INIS)

    Watanabe, Shoichi

    1988-01-01

    Purpose: To inhibit the lowering of the neutron moderation effect due to voids in the upper portion of the reactor core, thereby flatten the axial power distribution. Constitution: Although it has been proposed to enlarge the diameter at the upper portion of a water rod thereby increasing the moderator in the upper portion, since the water rod situates within the channel box, the increase in the capacity thereof is has certain limit. In the present invention, it is designed such that the volume of the region at the outside of the channel box for the fuel assembly to which non-boiling water in the non-boiling water region can enter is made greater in the upper portion than in the lower portion of the reactor core. Thus, if the moderator density in the upper portion of the reactor core should be decreased due to the generation of the voids, the neutron moderating effect in the upper portion of the reactor core is not lowered as compared with the lower portion of the reactor core and, accordingly, the axial power distribution can be flattening more as compared with that in the conventional nuclear reactors. (Takahashi, M.)

  15. Finding equilibrium in the spatiotemporal chaos of the complex Ginzburg-Landau equation

    Science.gov (United States)

    Ballard, Christopher C.; Esty, C. Clark; Egolf, David A.

    2016-11-01

    Equilibrium statistical mechanics allows the prediction of collective behaviors of large numbers of interacting objects from just a few system-wide properties; however, a similar theory does not exist for far-from-equilibrium systems exhibiting complex spatial and temporal behavior. We propose a method for predicting behaviors in a broad class of such systems and apply these ideas to an archetypal example, the spatiotemporal chaotic 1D complex Ginzburg-Landau equation in the defect chaos regime. Building on the ideas of Ruelle and of Cross and Hohenberg that a spatiotemporal chaotic system can be considered a collection of weakly interacting dynamical units of a characteristic size, the chaotic length scale, we identify underlying, mesoscale, chaotic units and effective interaction potentials between them. We find that the resulting equilibrium Takahashi model accurately predicts distributions of particle numbers. These results suggest the intriguing possibility that a class of far-from-equilibrium systems may be well described at coarse-grained scales by the well-established theory of equilibrium statistical mechanics.

  16. Energy-momentum tensor in quantum field theory

    International Nuclear Information System (INIS)

    Fujikawa, Kazuo.

    1980-12-01

    The definition of the energy-momentum tensor as a source current coupled to the background gravitational field receives an important modification in quantum theory. In the path integral approach, the manifest covariance of the integral measure under general coordinate transformations dictates that field variables with weight 1/2 should be used as independent integration variables. An improved energy-momentum tensor is then generated by the variational derivative, and it gives rise to well-defined gravitational conformal (Weyl) anomalies. In the flat space-time limit, all the Ward-Takahashi identities associate with space-time transformations including the global dilatation become free from anomalies, reflecting the general covariance of the integral measure; the trace of this energy-momentum tensor is thus finite at the zero momentum transfer. The Jacobian for the local conformal transformation however becomes non-trivial, and it gives rise to an anomaly for the conformal identity. All the familiar anomalies are thus reduced to either chiral or conformal anomalies. The consistency of the dilatation and conformal identities at the vanishing momentum transfer determines the trace anomaly of this energy-momentum tensor in terms of the renormalization group β-function and other parameters. In contrast, the trace of the conventional energy-momentum tensor generally diverges even at the vanishing momentum transfer depending on the regularization scheme, and it is subtractively renormalized. We also explain how the apparently different renormalization properties of the chiral and trace anomalies arise. (author)

  17. Self-Condensation Culture Enables Vascularization of Tissue Fragments for Efficient Therapeutic Transplantation

    Directory of Open Access Journals (Sweden)

    Yoshinobu Takahashi

    2018-05-01

    Full Text Available Summary: Clinical transplantation of tissue fragments, including islets, faces a critical challenge because of a lack of effective strategies that ensure efficient engraftment through the timely integration of vascular networks. We recently developed a complex organoid engineering method by “self-condensation” culture based on mesenchymal cell-dependent contraction, thereby enabling dissociated heterotypic lineages including endothelial cells to self-organize in a spatiotemporal manner. Here, we report the successful adaptation of this method for generating complex tissues from diverse tissue fragments derived from various organs, including pancreatic islets. The self-condensation of human and mouse islets with endothelial cells not only promoted functionalization in culture but also massively improved post-transplant engraftment. Therapeutically, fulminant diabetic mice were more efficiently treated by a vascularized islet transplant compared with the conventional approach. Given the general limitations of post-transplant vascularization associated with 3D tissue-based therapy, our approach offers a promising means of enhancing efficacy in the context of therapeutic tissue transplantation. : Takahashi et al. report on generating vascularized islet tissue from humans and mice. After transplantation, vascularized islets significantly improve survival of diabetic mice, demonstrating the quick normalization of blood glucose compared with conventional islet transplantation. Keywords: tissue engineering, tissue-based therapy, vascularization, islet transplantation, organoid

  18. A flexible spatial scan statistic with a restricted likelihood ratio for detecting disease clusters.

    Science.gov (United States)

    Tango, Toshiro; Takahashi, Kunihiko

    2012-12-30

    Spatial scan statistics are widely used tools for detection of disease clusters. Especially, the circular spatial scan statistic proposed by Kulldorff (1997) has been utilized in a wide variety of epidemiological studies and disease surveillance. However, as it cannot detect noncircular, irregularly shaped clusters, many authors have proposed different spatial scan statistics, including the elliptic version of Kulldorff's scan statistic. The flexible spatial scan statistic proposed by Tango and Takahashi (2005) has also been used for detecting irregularly shaped clusters. However, this method sets a feasible limitation of a maximum of 30 nearest neighbors for searching candidate clusters because of heavy computational load. In this paper, we show a flexible spatial scan statistic implemented with a restricted likelihood ratio proposed by Tango (2008) to (1) eliminate the limitation of 30 nearest neighbors and (2) to have surprisingly much less computational time than the original flexible spatial scan statistic. As a side effect, it is shown to be able to detect clusters with any shape reasonably well as the relative risk of the cluster becomes large via Monte Carlo simulation. We illustrate the proposed spatial scan statistic with data on mortality from cerebrovascular disease in the Tokyo Metropolitan area, Japan. Copyright © 2012 John Wiley & Sons, Ltd.

  19. Wide-Field Imaging Telescope-0 (WIT0) with automatic observing system

    Science.gov (United States)

    Ji, Tae-Geun; Byeon, Seoyeon; Lee, Hye-In; Park, Woojin; Lee, Sang-Yun; Hwang, Sungyong; Choi, Changsu; Gibson, Coyne Andrew; Kuehne, John W.; Prochaska, Travis; Marshall, Jennifer L.; Im, Myungshin; Pak, Soojong

    2018-01-01

    We introduce Wide-Field Imaging Telescope-0 (WIT0), with an automatic observing system. It is developed for monitoring the variabilities of many sources at a time, e.g. young stellar objects and active galactic nuclei. It can also find the locations of transient sources such as a supernova or gamma-ray bursts. In 2017 February, we installed the wide-field 10-inch telescope (Takahashi CCA-250) as a piggyback system on the 30-inch telescope at the McDonald Observatory in Texas, US. The 10-inch telescope has a 2.35 × 2.35 deg field-of-view with a 4k × 4k CCD Camera (FLI ML16803). To improve the observational efficiency of the system, we developed a new automatic observing software, KAOS30 (KHU Automatic Observing Software for McDonald 30-inch telescope), which was developed by Visual C++ on the basis of a windows operating system. The software consists of four control packages: the Telescope Control Package (TCP), the Data Acquisition Package (DAP), the Auto Focus Package (AFP), and the Script Mode Package (SMP). Since it also supports the instruments that are using the ASCOM driver, the additional hardware installations become quite simplified. We commissioned KAOS30 in 2017 August and are in the process of testing. Based on the WIT0 experiences, we will extend KAOS30 to control multiple telescopes in future projects.

  20. Gauge invariance in the presence of a cutoff

    International Nuclear Information System (INIS)

    Kvinikhidze, A. N.; Blankleider, B.; Epelbaum, E.; Hanhart, C.; Valderrama, M. Pavon

    2009-01-01

    We use the method of gauging equations to construct the electromagnetic current operator for the two-nucleon system in a theory with a finite cutoff. The employed formulation ensures that the two-nucleon T-matrix and corresponding five-point function, in the cutoff theory, are identical to the ones formally defined by a reference theory without a cutoff. A feature of our approach is that it effectively introduces a cutoff into the reference theory in a way that maintains the long-range part of the exchange current operator; for applications to effective field theory (EFT), this property is usually sufficient to guarantee the predictive power of the resulting cutoff theory. In addition, our approach leads to Ward-Takahashi (WT) identities that are linear in the interactions. From the point of view of EFT's where such a WT identity is satisfied in the reference theory, this ensures that gauge invariance in the cutoff theory is maintained order by order in the expansion.

  1. Nonlinear quantum electrodynamic and electroweak processes in strong laser fields

    Energy Technology Data Exchange (ETDEWEB)

    Meuren, Sebastian

    2015-06-24

    Various nonlinear electrodynamic and electroweak processes in strong plane-wave laser fields are considered with an emphasis on short-pulse effects. In particular, the momentum distribution of photoproduced electron-positron pairs is calculated numerically and a semiclassical interpretation of its characteristic features is established. By proving the optical theorem, compact double-integral expressions for the total pair-creation probability are obtained and numerically evaluated. The exponential decay of the photon wave function in a plane wave is included by solving the Schwinger-Dyson equations to leading-order in the quasistatic approximation. In this respect, the polarization operator in a plane wave is investigated and its Ward-Takahashi identity verified. A classical analysis indicates that a photoproduced electron-positron pair recollides for certain initial conditions. The contributions of such recollision processes to the polarization operator are identified and calculated both analytically and numerically. Furthermore, the existence of nontrivial electron-spin dynamics induced by quantum fluctuations is verified for ultra-short laser pulses. Finally, the exchange of weak gauge bosons is considered, which is essential for neutrino-photon interactions. In particular, the axial-vector-vector coupling tensor is calculated and the so-called Adler-Bell-Jackiw (ABJ) anomaly investigated.

  2. Hidden symmetries and equilibrium properties of multiplicative white-noise stochastic processes

    Science.gov (United States)

    González Arenas, Zochil; Barci, Daniel G.

    2012-12-01

    Multiplicative white-noise stochastic processes continue to attract attention in a wide area of scientific research. The variety of prescriptions available for defining them makes the development of general tools for their characterization difficult. In this work, we study equilibrium properties of Markovian multiplicative white-noise processes. For this, we define the time reversal transformation for such processes, taking into account that the asymptotic stationary probability distribution depends on the prescription. Representing the stochastic process in a functional Grassmann formalism, we avoid the necessity of fixing a particular prescription. In this framework, we analyze equilibrium properties and study hidden symmetries of the process. We show that, using a careful definition of the equilibrium distribution and taking into account the appropriate time reversal transformation, usual equilibrium properties are satisfied for any prescription. Finally, we present a detailed deduction of a covariant supersymmetric formulation of a multiplicative Markovian white-noise process and study some of the constraints that it imposes on correlation functions using Ward-Takahashi identities.

  3. Hidden symmetries and equilibrium properties of multiplicative white-noise stochastic processes

    International Nuclear Information System (INIS)

    Arenas, Zochil González; Barci, Daniel G

    2012-01-01

    Multiplicative white-noise stochastic processes continue to attract attention in a wide area of scientific research. The variety of prescriptions available for defining them makes the development of general tools for their characterization difficult. In this work, we study equilibrium properties of Markovian multiplicative white-noise processes. For this, we define the time reversal transformation for such processes, taking into account that the asymptotic stationary probability distribution depends on the prescription. Representing the stochastic process in a functional Grassmann formalism, we avoid the necessity of fixing a particular prescription. In this framework, we analyze equilibrium properties and study hidden symmetries of the process. We show that, using a careful definition of the equilibrium distribution and taking into account the appropriate time reversal transformation, usual equilibrium properties are satisfied for any prescription. Finally, we present a detailed deduction of a covariant supersymmetric formulation of a multiplicative Markovian white-noise process and study some of the constraints that it imposes on correlation functions using Ward–Takahashi identities. (paper)

  4. Ab initio intermolecular potential energy surface and thermophysical properties of hydrogen sulfide.

    Science.gov (United States)

    Hellmann, Robert; Bich, Eckard; Vogel, Eckhard; Vesovic, Velisa

    2011-08-14

    A six-dimensional potential energy hypersurface (PES) for two interacting rigid hydrogen sulfide molecules was determined from high-level quantum-mechanical ab initio computations. A total of 4016 points for 405 different angular orientations of two molecules were calculated utilizing the counterpoise-corrected supermolecular approach at the CCSD(T) level of theory and extrapolating the calculated interaction energies to the complete basis set limit. An analytical site-site potential function with eleven sites per hydrogen sulfide molecule was fitted to the interaction energies. The PES has been validated by computing the second pressure virial coefficient, shear viscosity, thermal conductivity and comparing with the available experimental data. The calculated values of volume viscosity were not used to validate the potential as the low accuracy of the available data precluded such an approach. The second pressure virial coefficient was evaluated by means of the Takahashi and Imada approach, while the transport properties, in the dilute limit, were evaluated by utilizing the classical trajectory method. In general, the agreement with the primary experimental data is within the experimental error for temperatures higher than 300 K. For lower temperatures the lack of reliable data indicates that the values of the second pressure virial coefficient and of the transport properties calculated in this work are currently the most accurate estimates for the thermophysical properties of hydrogen sulfide.

  5. Method for decontaminating stainless cladding tubes

    International Nuclear Information System (INIS)

    Komatsu, Fumiaki.

    1986-01-01

    Purpose: To form an oxide film over the surface of stainless cladding tubes and to efficiently remove radioactive materials from the steel surface together with the oxide layer by the use of an acid water solution. Method: After the removal of water from cladding tubes that have passed through the re-processing process, an oxide film is formed on the surface of the cladding tubes by heating over 400 deg C in an oxidizing atmosphere and thereafter washed again in an acid water solution. When the cladding tubes are thus oxidized once, the stainless base metal itself is oxidized, an oxide layer of several 10 μm or more being formed thereon. In consequence, since the oxide layer is far inferior in corrosion resistance to stainless metals, a pickling liquid easily penetrates into the stainless metal through the oxide layer, thereby remarkably promoting the peeling of the layer from the base metal surface and also improving the residual radioactive material removing efficiency together. (Takahashi, M.)

  6. Reducing Barriers to Career Entry for Latinos: An Examination of Pathways into Social Work

    Directory of Open Access Journals (Sweden)

    Anthony De Jesús

    2013-09-01

    Full Text Available Demand for bilingual/bicultural social work practitioners presents a mutually beneficial opportunity for the social work profession and Latinos who are increasingly in positions to be employed as social workers (Acevedo, González, Santiago, & Vargas-Ramos, 2007; Ortíz-Hendricks, 2007. Uneven academic preparation, limited access to information about college, high tuition/opportunity costs and family obligations are among the barriers to higher education for Latinos (Arbona & Nora, 2007; Hurtado & Ponjuan, 2005; Ortíz et al., 2007. Using comparative methods, this article describes career pathway program models that address obstacles to successful entry into social work careers. These models also demonstrate the potential to reduce barriers to degree completion and career entry for Latinos. Salient program components include reduced tuition and tuition assistance, transportation assistance, child care, support in strengthening oral and written English skills, and access to networks of employers (Takahashi & Melendez, 2004. Implications for social work and social work education are also discussed.

  7. Multiple evanescent white dot syndrome associated with retinal vasculitis

    Directory of Open Access Journals (Sweden)

    Takahashi A

    2015-09-01

    Full Text Available Akihiro Takahashi, Wataru Saito, Yuki Hashimoto, Susumu Ishida Department of Ophthalmology, Hokkaido University Graduate School of Medicine, Sapporo, Japan Purpose: A recent study revealed thickening of the inner retinal layers in acute stage of multiple evanescent white dot syndrome (MEWDS; however, the pathogenesis is still unknown. We report two cases with MEWDS whose funduscopy showed obvious retinal vasculitis. Methods: Case reports. Results: Healthy myopic 16- and 27-year-old women were the cases under study. In both cases, funduscopic examination revealed multiple, faint, small, subretinal white dots at the posterior pole to the midperiphery and macular granularity oculus dexter. Retinal vascular sheathing was also observed at midperiphery. Late-phase fluorescein angiography revealed leakages corresponding to the vascular sheathing. Enhanced depth imaging optical coherence tomography revealed the discontinuity of the ellipsoid zone corresponding to the white dots and increased macular choroidal thickness. One month later, these white dots and retinal sheathing spontaneously resolved in both cases. Three months later, impairments of the outer retinal morphology and the visual acuity were restored. Conclusion: These results suggest that retinal vasculitis possibly plays a role in the pathogenesis of thickened inner retinal layers in acute stage of MEWDS. Keywords: enhanced depth imaging optical coherence tomography, choroidal thickness, inner retinal layer, retinal vascular sheathing

  8. Path integral for gauge theories with fermions

    International Nuclear Information System (INIS)

    Fujikawa, K.

    1980-01-01

    The Atiyah-Singer index theorem indicates that a naive unitary transformation of basis vectors for fermions interacting with gauge fields is not allowed in general. On the basis of this observation, it was previously shown that the path-integral measure of a gauge-invariant fermion theory is transformed nontrivially under the chiral transformation, and thus leads to a simple derivation of ''anomalous'' chiral Ward-Takahashi identities. We here clarify some of the technical aspects associated with the discussion. It is shown that the Jacobian factor in the path-integral measure, which corresponds to the Adler-Bell-Jackiw anomaly, is independent of any smooth regularization procedure of large eigenvalues of D in Euclidean theory; this property holds in any even-dimensional space-time and also for the gravitational anomaly. The appearance of the anomaly and its connection with the index theorem are thus related to the fact that the primary importance is attached to the Lorentz-covariant ''energy'' operator D and that D and γ 5 do not commute. The abnormal behavior of the path-integral measure at the zero-frequency sector in the presence of instantons and its connection with spontaneous symmetry breaking is also clarified. We comment on several other problems associated with the anomaly and on the Pauli-Villars regularization method

  9. Alternative sources of pluripotency: science, ethics, and stem cells.

    Science.gov (United States)

    Kastenberg, Zachary J; Odorico, Jon S

    2008-07-01

    Despite many advances in human embryonic stem cell (hESC) technology the ethical dilemma involving the destruction of a human embryo is one factor that has limited the development of hESC based clinical therapies. Two recent reports describing the production of pluripotent stem cells following the in vitro reprogramming of human somatic cells with certain defined factors illustrate one potential method of bypassing the ethical debate surrounding hESCs (Yu J, Vodyanik MA, Smuga-Otto K, et al. Induced pluripotent stem cell lines derived from human somatic cells. Science. 2007 Dec;318(5858):1917-1920; Takahashi K, Tanabe K, Ohnuki M, et al. Induction of pluripotent stem cells from adult human fibroblasts by defined factors. Cell. 2007 Nov;131(5): 861-872.). Other alternative methods include nuclear transfer, altered nuclear transfer, and parthenogenesis; each with its own set of advantages and disadvantages. This review discusses recent advances in these technologies with specific focus on the issues of embryo destruction, oocyte recovery, and the potential of each technology to produce large scale, patient specific cell transplantation therapies that would require little or no immunosuppression.

  10. Fuel assemblies for use in BWR type reactors

    International Nuclear Information System (INIS)

    Hirukawa, Koji.

    1987-01-01

    Purpose: To moderate the peak configuration of the burnup degree change curve for the infinite multiplication factor by applying an improvement to the arrangement of fuel rods. Constitution: In a fuel assembly for a BWR type reactor comprising a plurality of fuel rods and water rods arranged in a square lattice, fuel rods containing burnable poisons are arranged at four corners at the second and the third layers from the outside of the square lattice arrangement. Among them, the Cd poison effect in the burnable poison incorporated fuel rods disposed at the second layer is somewhat greater at the initial burning stage and then rapidly decreased along with burning. While on the other hand, the poison effect of the burnable poison-incorporated fuel rods at the third layer is smaller than that at the second layer at the initial burning stage and the reduction in the poison effect due to burning is somewhat more moderate. Since these fuel rods are in adjacent with each other, they interfere to each other and also provide an effect of moderating the burning of the burnable poisons. (Takahashi, M.)

  11. X irradiation combined with TNF alpha-related apoptosis-inducing ligand (TRAIL) reduces hypoxic regions of human gastric adenocarcinoma xenografts in SCID mice

    International Nuclear Information System (INIS)

    Takahashi, Momoko; Yasui, Hironobu; Ogura, Aki; Asanuma, Taketoshi; Inanami, Osamu; Kubota, Nobuo; Tsujitani, Michihiko; Kuwabara, Mikinori

    2008-01-01

    Our previous study showed that X irradiation induced the expression of death receptor DR5 on the cell surface in tumor cell lines under not only normoxia but also hypoxia. X irradiation combined with TNF α-related apoptosis-inducing ligand (TRAIL), which is the ligand of DR5, induced apoptosis in vitro (Takahashi et al., (2007) Journal of Radiation Research, 48: 461-468). In this report, we examined the in vivo antitumor efficacy of X irradiation combined with TRAIL treatment in tumor xenograft models derived from human gastric adenocarcinoma MKN45 and MKN28 cells in severe combined immunodeficiency (SCID) mice. X irradiation combined with TRAIL synergistically suppressed the tumor growth rates in the xenograft models derived from MKN45 and MKN28 cells, which have wild type Tp53 and mutated Tp53, respectively, indicating that the antitumor effects occurred in a Tp53-independent manner. Histological analysis showed that the combination of X irradiation and TRAIL induced caspase-3-dependent apoptotic cell death. Moreover, the immunohistochemical detection of hypoxic regions using the hypoxic marker pimonidazole revealed that caspase-3-dependent apoptosis occurred in the hypoxic regions in the tumors. These results indicated that X irradiation combined with TRAIL may be a useful treatment to reduce tumor growth in not only normoxic but also hypoxic regions. (author)

  12. Effect of a steam foot spa on geriatric inpatients with cognitive impairment: a pilot study

    Directory of Open Access Journals (Sweden)

    Koike Y

    2013-05-01

    Full Text Available Yoshihisa Koike,1 Hideki Kondo,2 Satoshi Kondo,1 Masayuki Takagi,1 Yoshio Kano31Department of Occupational Therapy, Prefectural University of Hiroshima, Mihara, Japan; 2Yoshiigawa Hospital, Okayama, Japan; 3Department of Occupational Therapy, Kibi International University, Takahashi, JapanPurpose: To investigate whether a steam foot spa improves cognitive impairment in geriatric inpatients.Methods: Geriatric inpatients with cognitive impairment were given a steam foot spa treatment at 42°C for 20 minutes for 2 weeks (5 days/week. Physiological indicators such as blood pressure, percutaneous oxygen saturation, pulse, tympanic temperature, and sleep time and efficiency were assessed. Cognitive function and behavioral and psychological symptoms of dementia were assessed using the Mini-Mental State Examination, Dementia Mood Assessment Scale, and Dementia Behavior Disturbance scale.Results: Significant decreases in systolic (P < 0.01 and diastolic blood pressure (P < 0.05 along with a significant increase in tympanic temperature (P < 0.01 were observed after the steam foot spas. A significant improvement was seen in the Mini-Mental State Examination score (P < 0.01 and the overall dementia severity items in Dementia Mood Assessment Scale (P < 0.05.Limitations: Japanese people are very fond of foot baths. However, it is difficult to understand why inpatients cannot receive steam foot baths. In this study, a control group was not used. Raters and enforcers were not blinded.Conclusion: The results of this pilot study suggest that steam foot spas mitigate cognitive impairment in geriatric inpatients.Keywords: steam foot spa, geriatric inpatients, cognitive impairment, tympanic temperature

  13. Effect of travoprost on 24-hour intraocular pressure in normal tension glaucoma

    Directory of Open Access Journals (Sweden)

    Yuya Nomura

    2010-07-01

    Full Text Available Yuya Nomura1, Shunsuke Nakakura2, Mitsuyasu Moriwaki1, Yasuhiro Takahashi1, Kunihiko Shiraki11Department of Ophthalmology and Visual Sciences, Graduate School of Medicine, Osaka City University, Japan; 2Department of Ophthalmology, Saiseikai Gose Hospital, JapanPurpose: The effect of travoprost 0.004% on 24-hour intraocular pressure (IOP was examined in patients with normal tension glaucoma (NTG.Subjects and methods: This study included 17 patients with newly diagnosed unilateral NTG. IOP was measured at three-hour intervals over 24 hours by Goldman applanation tonometer in patients taking topical travoprost 0.004% and was compared retrospectively with 24-hour IOP data in untreated eyes.Results: IOP values were significantly reduced at individual time points after treatment (P < 0.01. Mean 24-hour IOP, maximum 24-hour IOP, minimum 24-hour IOP, and 24-hour IOP fluctuations at baseline (mean ± SD were 12.9 ± 2.2 mmHg, 15.4 ± 2.7 mmHg, 10.5 ± 2.2 mmHg, and 4.9 ± 1.2 mmHg, respectively, and were significantly reduced to 10.3 ± 2.0 mmHg, 12.4 ± 2.5 mmHg, 8.5 ± 1.9 mmHg (all P < 0.001, and 3.9 ± 1.5 mmHg (P < 0.05, respectively, after treatment. The rate of IOP reduction greater than 20% was 58.8% (10 eyes for maximum 24-hour IOP and 53.0% (nine eyes for mean 24-hour IOP.Conclusion: Travoprost reduced IOP throughout the 24-hour study period, with over half of the eyes examined showing IOP reduction exceeding 20%.Keywords: 24-hour intraocular pressure, fluctuation, normal tension glaucoma, travoprost, Travatan Z

  14. Hybrid light emitting transistors (Presentation Recording)

    Science.gov (United States)

    Muhieddine, Khalid; Ullah, Mujeeb; Namdas, Ebinazar B.; Burn, Paul L.

    2015-10-01

    Organic light-emitting diodes (OLEDs) are well studied and established in current display applications. Light-emitting transistors (LETs) have been developed to further simplify the necessary circuitry for these applications, combining the switching capabilities of a transistor with the light emitting capabilities of an OLED. Such devices have been studied using mono- and bilayer geometries and a variety of polymers [1], small organic molecules [2] and single crystals [3] within the active layers. Current devices can often suffer from low carrier mobilities and most operate in p-type mode due to a lack of suitable n-type organic charge carrier materials. Hybrid light-emitting transistors (HLETs) are a logical step to improve device performance by harnessing the charge carrier capabilities of inorganic semiconductors [4]. We present state of the art, all solution processed hybrid light-emitting transistors using a non-planar contact geometry [1, 5]. We will discuss HLETs comprised of an inorganic electron transport layer prepared from a sol-gel of zinc tin oxide and several organic emissive materials. The mobility of the devices is found between 1-5 cm2/Vs and they had on/off ratios of ~105. Combined with optical brightness and efficiencies of the order of 103 cd/m2 and 10-3-10-1 %, respectively, these devices are moving towards the performance required for application in displays. [1] M. Ullah, K. Tandy, S. D. Yambem, M. Aljada, P. L. Burn, P. Meredith, E. B. Namdas., Adv. Mater. 2013, 25, 53, 6213 [2] R. Capelli, S. Toffanin, G. Generali, H. Usta, A. Facchetti, M. Muccini, Nature Materials 2010, 9, 496 [3] T. Takenobu, S. Z. Bisri, T. Takahashi, M. Yahiro, C. Adachi, Y. Iwasa, Phys. Rev. Lett. 2008, 100, 066601 [4] H. Nakanotani, M. Yahiro, C. Adachi, K. Yano, Appl. Phys. Lett. 2007, 90, 262104 [5] K. Muhieddine, M. Ullah, B. N. Pal, P. Burn E. B. Namdas, Adv. Mater. 2014, 26,37, 6410

  15. Neutralizing activities of human immunoglobulin derived from donors in Japan against mosquito-borne flaviviruses, Japanese encephalitis virus, West Nile virus, and dengue virus

    Directory of Open Access Journals (Sweden)

    Yunoki M

    2016-07-01

    Full Text Available Mikihiro Yunoki,1-3 Takeshi Kurosu,2 Ritsuko Kubota Koketsu,2,4 Kazuo Takahashi,5 Yoshinobu Okuno,4 Kazuyoshi Ikuta2,4 1Research and Development Division, Japan Blood Products Organization, Tokyo, 2Department of Virology, Research Institute for Microbial Diseases, Osaka University, Osaka, 3Pathogenic Risk Evaluation, Graduate School of Veterinary Medicine, Rakuno Gakuen University, Hokkaido, 4Research and Development Division, The Research Foundation for Microbial Diseases of Osaka University, Kagawa, 5Osaka Prefectural Institute of Public Health, Osaka, Japan Abstract: Japanese encephalitis virus (JEV, West Nile virus (WNV, and dengue virus (DenV are causal agents of Japanese encephalitis, West Nile fever, and dengue fever, respectively. JEV is considered to be indigenized and widespread in Japan, whereas WNV and DenV are not indigenized in Japan. Globulin products seem to reflect the status of the donor population according to antivirus neutralization activity. However, the anti-JEV, -WNV, and -DenV neutralization activities of globulin products derived from donors in Japan have not been clarified. Furthermore, potential candidates for the development of an effective immunotherapeutic drug for encephalitis caused by JEV, WNV, or DenV have also not been identified. Therefore, the aim of this study was to determine the overall status of the donor population in Japan based on globulin products by evaluating anti-JEV, -WNV, and -DenV neutralizing activities of intravenous immunoglobulin. Overall, intravenous immunoglobulin products showed stable neutralizing activity against JEV but showed no or only weak activity against WNV or DenV. These results suggest that the epidemiological level against WNV and DenV in the donor population of Japan is still low, suggesting that these viruses are not yet indigenized. In addition, JEV vaccinations and/or infections in the donor population do not induce a cross-reactive antibody against WNV. Keywords

  16. Acute inflammation in horizontal incompletely impacted third molar with radiolucency in the elderly

    Directory of Open Access Journals (Sweden)

    Minoru Yamaoka

    2009-07-01

    Full Text Available Minoru Yamaoka, Yusuke Ono, Masahiro Takahashi, Masahide Ishizuka, Takayuki Uchihashi, Kouichi Yasuda, Takashi Uematsu, Kiyofumi FurusawaMatsumoto Dental University, Oral and Maxillofacial Surgery, Shiojiri, Nagano, JapanAbstract: Although radiolucency has been shown as a risk of infection, the poorly understood effects of aging on radiolucency correlate with acute pericoronitis, which has a high risk of infection extending any complications. We reviewed the records of 346 consecutive patients aged more than 41 years to evaluate whether pericoronal radiolucency below the crown in mandibular horizontal incompletely impacted third molars is related to acute inflammation. The frequency of acute inflammation in teeth with pericoronal radiolucency below the crown was similar to that in teeth without; however, the odds ratio of acute inflammation exhibited in women aged more than 61 years compared to women aged 41–50 years was 9.77 (95% confidence interval [CI]: 1.67–57.29; P <<0.05, and in women aged more than 61 years compared to women aged 51–60 years was 26.25 (95% CI: 2.94–234.38; P < 0.01. The odds ratio of severe acute inflammation exhibited in men aged more than 61 years compared to men aged 41–50 years was 16.67 (95% CI: 1.76–158.27; P < 0.01. These odds ratios indicate an association of acute pericoronitis, including the severe forms of acute inflammation that result from pericoronitis, with pericoronal radiolucency below the crown in the elderly.Keywords: radiolucency, mandible, third molar, acute inflammation, aging

  17. HIGH-PRECISION PREDICTIONS FOR THE ACOUSTIC SCALE IN THE NONLINEAR REGIME

    International Nuclear Information System (INIS)

    Seo, Hee-Jong; Eckel, Jonathan; Eisenstein, Daniel J.; Mehta, Kushal; Metchnik, Marc; Pinto, Phillip; Xu Xiaoying; Padmanabhan, Nikhil; Takahashi, Ryuichi; White, Martin

    2010-01-01

    We measure shifts of the acoustic scale due to nonlinear growth and redshift distortions to a high precision using a very large volume of high-force-resolution simulations. We compare results from various sets of simulations that differ in their force, volume, and mass resolution. We find a consistency within 1.5σ for shift values from different simulations and derive shift α(z) - 1 = (0.300 ± 0.015) %[D(z)/D(0)] 2 using our fiducial set. We find a strong correlation with a non-unity slope between shifts in real space and in redshift space and a weak correlation between the initial redshift and low redshift. Density-field reconstruction not only removes the mean shifts and reduces errors on the mean, but also tightens the correlations. After reconstruction, we recover a slope of near unity for the correlation between the real and redshift space and restore a strong correlation between the initial and the low redshifts. We derive propagators and mode-coupling terms from our N-body simulations and compare with the Zel'dovich approximation and the shifts measured from the χ 2 fitting, respectively. We interpret the propagator and the mode-coupling term of a nonlinear density field in the context of an average and a dispersion of its complex Fourier coefficients relative to those of the linear density field; from these two terms, we derive a signal-to-noise ratio of the acoustic peak measurement. We attempt to improve our reconstruction method by implementing 2LPT and iterative operations, but we obtain little improvement. The Fisher matrix estimates of uncertainty in the acoustic scale is tested using 5000 h -3 Gpc 3 of cosmological Particle-Mesh simulations from Takahashi et al. At an expected sample variance level of 1%, the agreement between the Fisher matrix estimates based on Seo and Eisenstein and the N-body results is better than 10%.

  18. Poor embryo development in post-ovulatory in vivo-aged mouse oocytes is associated with mitochondrial dysfunction, but mitochondrial transfer from somatic cells is not sufficient for rejuvenation.

    Science.gov (United States)

    Igarashi, Hideki; Takahashi, Toshifumi; Abe, Hiroyuki; Nakano, Hiroshi; Nakajima, Osamu; Nagase, Satoru

    2016-10-01

    Does in vivo aging of mouse oocytes affect mitochondrial function? Mitochondrial function was impaired in post-ovulatory in vivo-aged mouse oocytes and microinjection of somatic cell mitochondria did not rescue poor fertilization and embryonic development rates. The mechanisms underlying the decline in oocyte quality associated with oocyte aging remain unknown, although studies have suggested that the decline is regulated by mitochondrial dysfunction. However, only a limited number of studies have provided direct evidence implicating mitochondrial dysfunction in oocyte quality during the aging of oocytes. We used post-ovulatory, in vivo-aged mouse oocytes as a model for studying low-quality oocytes in oocyte aging. Superovulated oocytes released from the oviduct at 14 h and 20-24 h post-hCG injection were designated as 'fresh' and 'aged' oocytes, respectively. Membrane potentials and oxygen consumption in single oocytes were evaluated as measures of mitochondrial function in fresh and aged oocytes. Mitochondrial transcriptional factor A (TFAM) expression levels were examined by western blotting, and colocalization of mitochondria and TFAM was analyzed by measuring immunofluorescence in fresh and aged oocytes. IVF and blastocyst formation rates were calculated after oocyte microinjection with mitochondria derived from liver cells. The average mitochondrial membrane potential in fresh oocytes was significantly higher than that in aged oocytes (P transfer of cytosolic factors or cellular organelles, such as the endoplasmic reticulum or mitochondria, from specific cell types. This study was supported by Grants-in-Aid for General Science Research to Toshifumi Takahashi (No. 25462550) and Hideki Igarashi (No. 26462474). The funding source played no role in study design in the collection, analysis, and interpretation of data; in the writing of the report; and in the decision to submit the article for publication. The authors have no conflict of interest to disclose.

  19. Genetic Modification in Human Pluripotent Stem Cells by Homologous Recombination and CRISPR/Cas9 System.

    Science.gov (United States)

    Xue, Haipeng; Wu, Jianbo; Li, Shenglan; Rao, Mahendra S; Liu, Ying

    2016-01-01

    Genetic modification is an indispensable tool to study gene function in normal development and disease. The recent breakthrough of creating human induced pluripotent stem cells (iPSCs) by defined factors (Takahashi et al., Cell 131:861-872, 2007) provides a renewable source of patient autologous cells that not only retain identical genetic information but also give rise to many cell types of the body including neurons and glia. Meanwhile, the rapid advancement of genome modification tools such as gene targeting by homologous recombination (Capecchi, Nat Rev Genet 6:507-512, 2005) and genome editing tools such as CRISPR (Clustered Regularly Interspaced Short Palindromic Repeats)/Cas (CRISPR-associated) system, TALENs (Transcription activator-like effector nucleases), and ZFNs (Zinc finger nucleases) (Wang et al., Cell 153:910-918, 2013; Mali et al., Science 339:823-826, 2013; Hwang et al., Nat Biotechnol 31:227-229, 2013; Friedland et al., Nat Methods 10(8):741-743, 2013; DiCarlo et al., Nucleic Acids Res 41:4336-4343, 2013; Cong et al., Science 339:819-823, 2013) has greatly accelerated the development of human genome manipulation at the molecular level. This chapter describes the protocols for making neural lineage reporter lines using homologous recombination and the CRISPR/Cas system-mediated genome editing, including construction of targeting vectors, guide RNAs, transfection into hPSCs, and selection and verification of successfully targeted clones. This method can be applied to various needs of hPSC genetic engineering at high efficiency and high reliability.

  20. Theory of ballooning-mirror instabilities for anisotropic pressure plasmas in the magnetosphere

    International Nuclear Information System (INIS)

    Cheng, C.Z.; Qian, Q.

    1993-09-01

    This paper deals with a kinetic-MHD eigenmode stability analysis of low frequency ballooning-mirror instabilities for anisotropic pressure plasmas in the magnetosphere. The ballooning mode is a dominant transverse wave driven unstable by pressure gradient in the bad curvature region. The mirror mode with a dominant compressional magnetic field perturbation is excited when the product of plasma beta and pressure anisotropy is large. The field-aligned eigenmode equations take into account the coupling of the transverse and compressional components of the perturbed magnetic field and describe the coupled ballooning-mirror mode. Because the energetic trapped ions precess very rapidly across the rvec B field, their motion becomes very rigid with respect to low frequency MHD perturbations with symmetric structure of parallel perturbed magnetic field δB parallel and electrostatic potential Φ along the north-south ambient magnetic field, and the symmetric ballooning-mirror mode is shown to be stable. On the other hand, the ballooning-mirror mode with antisymmetric δB parallel , and Φ structure along the north-south ambient magnetic field is only weakly influenced by energetic trapped particle kinetic effects due to rapid trapped particle bounce motion and has the lowest instability threshold determined by MHD theory. With large plasma beta (β parallel ≥ O(1)) and pressure anisotropy (P perpendicular /P parallel > 1) at equator the antisymmetric ballooning-mirror mode structures resemble the field-aligned wave structures of the multisatellite observations of a long lasting compressional Pc 5 wave event during November 14--15, 1979 [Takahashi et al.]. The study provides the theoretical basis for identifying the internal excitation mechanism of ULF (Pc 4-5) waves by comparing the plasma stability parameters computed from the satellite particle data with the theoretical values

  1. Aspects of confinement in a functional approach to coulomb gauge QCD

    International Nuclear Information System (INIS)

    Lichtenegger, K. G.

    2010-01-01

    The topic of this thesis are aspects of the confinement phenomenon in Coulomb gauge Quantum Chromodynamics.First we investigated the quark gap equation with an infrared-divergent Coulomb gluon propagator D00. As an extension to studies performed so far, some forms of an infrared-divergent spatial quark-gluon vertex have been tested, but the results remain inconclusive. There is, however, considerable evidence that some infrared dressing is required in order to obtain quantitatively reliable results. The numerical studies performed in this thesis indicate that neither the vertex form derived from the approximate Abelian Ward-Takahashi identity nor a globally divergent vertex is fit for this purpose.In addition, finite-temperature studies of pure gauge theory have been performed: On the one hand the Gribov-Zwanziger approach has been extended to the deconfined phase of Yang-Mills theory. The resulting equation has been solved numerically, which yields the Gribov mass. From this, the free energy, the interaction measure and the bulk viscosity have been determined. On the other hand, the asymptotic infrared behaviour of Dyson-Schwinger equations in Coulomb gauge have been analyzed. They yield a more than linearly rising potential for three spatial dimensions. A result which has yet to be understood.Apart from the two main topics, this thesis contains a pedagogic presentation of some peculiarities of non-Abelian gauge theories and several smaller conjectures and findings: This includes a proposal to systematize the set of gauges by introduction of an approriate metric, a discussion of the role of interpolating gauges and the use of to non-integrable potentials as well as a general expression for the number of components in the tensor decomposition of arbitrary Green functions. (author) [de

  2. Risk perception and risk attitudes in Tokyo: A report of the first administration of DOSPERT+M in Japan

    Directory of Open Access Journals (Sweden)

    Alan Schwartz

    2013-11-01

    Full Text Available Background: The Domain-Specific Risk Taking scale (DOSPERT has been used to measure risk perceptions and attitudes in several nations and cultures. Takahashi translated DOSPERT to Japanese but DOSPERT responses from Japan have never been reported. Butler et al. (2012 developed an additional medical risk domain subscale to be added to DOSPERT to form DOSPERT+M. Objective: To describe the translation of the medical risk domain subscale to Japanese and to characterize domain-specific risk attitudes in Tokyo. Methods: Members of a probability-weighted online panel representative of the Tokyo metro area were randomized to complete pairs of DOSPERT+M tasks (risk attitude, risk perception, benefit perception. We explored relationships among domains through correlational and factor analysis; we tested the hypothesis that the medical risk domain and DOSPERT's health/safety domains were uncorrelated. Participants: One hundred eighty panelists. Results: Six of the original DOSPERT items (two each in the ethics, health/safety, and financial domains are not useable in Japan according to the Japanese Marketing Research Association code because they ask about participation in illegal activities; we thus used abbreviated versions of those domains leaving out these items. The DOSPERT+M items generally did not cluster cleanly into the expected domains, although items within the same domain usually were intercorrelated. Participants demonstrated domain-specific conventional risk attitudes, although nearly half of those assessed were perceived-risk neutral in all domains. Unlike our recently reported findings in the U.S. population, DOSPERT+M medical domain scores were associated with health/safety domain scores, although they were often more strongly associated with scores in other domains, such as recreational activities. Conclusion: The DOSPERT (and DOSPERT+M instruments are problematic in Japan but Japanese citizens may also differ from those of other nations

  3. Two-dimensional Schrödinger symmetry and three-dimensional breathers and Kelvin-ripple complexes as quasi-massive-Nambu-Goldstone modes

    Science.gov (United States)

    Takahashi, Daisuke A.; Ohashi, Keisuke; Fujimori, Toshiaki; Nitta, Muneto

    2017-08-01

    Bose-Einstein condensates (BECs) confined in a two-dimensional (2D) harmonic trap are known to possess a hidden 2D Schrödinger symmetry, that is, the Schrödinger symmetry modified by a trapping potential. Spontaneous breaking of this symmetry gives rise to a breathing motion of the BEC, whose oscillation frequency is robustly determined by the strength of the harmonic trap. In this paper, we demonstrate that the concept of the 2D Schrödinger symmetry can be applied to predict the nature of three-dimensional (3D) collective modes propagating along a condensate confined in an elongated trap. We find three kinds of collective modes whose existence is robustly ensured by the Schrödinger symmetry, which are physically interpreted as one breather mode and two Kelvin-ripple complex modes, i.e., composite modes in which the vortex core and the condensate surface oscillate interactively. We provide analytical expressions for the dispersion relations (energy-momentum relation) of these modes using the Bogoliubov theory [D. A. Takahashi and M. Nitta, Ann. Phys. 354, 101 (2015), 10.1016/j.aop.2014.12.009]. Furthermore, we point out that these modes can be interpreted as "quasi-massive-Nambu-Goldstone (NG) modes", that is, they have the properties of both quasi-NG and massive NG modes: quasi-NG modes appear when a symmetry of a part of a Lagrangian, which is not a symmetry of a full Lagrangian, is spontaneously broken, while massive NG modes appear when a modified symmetry is spontaneously broken.

  4. Fast Generation of Ensembles of Cosmological N-Body Simulations via Mode-Resampling

    Energy Technology Data Exchange (ETDEWEB)

    Schneider, M D; Cole, S; Frenk, C S; Szapudi, I

    2011-02-14

    We present an algorithm for quickly generating multiple realizations of N-body simulations to be used, for example, for cosmological parameter estimation from surveys of large-scale structure. Our algorithm uses a new method to resample the large-scale (Gaussian-distributed) Fourier modes in a periodic N-body simulation box in a manner that properly accounts for the nonlinear mode-coupling between large and small scales. We find that our method for adding new large-scale mode realizations recovers the nonlinear power spectrum to sub-percent accuracy on scales larger than about half the Nyquist frequency of the simulation box. Using 20 N-body simulations, we obtain a power spectrum covariance matrix estimate that matches the estimator from Takahashi et al. (from 5000 simulations) with < 20% errors in all matrix elements. Comparing the rates of convergence, we determine that our algorithm requires {approx}8 times fewer simulations to achieve a given error tolerance in estimates of the power spectrum covariance matrix. The degree of success of our algorithm indicates that we understand the main physical processes that give rise to the correlations in the matter power spectrum. Namely, the large-scale Fourier modes modulate both the degree of structure growth through the variation in the effective local matter density and also the spatial frequency of small-scale perturbations through large-scale displacements. We expect our algorithm to be useful for noise modeling when constraining cosmological parameters from weak lensing (cosmic shear) and galaxy surveys, rescaling summary statistics of N-body simulations for new cosmological parameter values, and any applications where the influence of Fourier modes larger than the simulation size must be accounted for.

  5. An Investigation of the Use of politeness strategies in refusal among Characters with different power relations in English and Farsi Novels

    Directory of Open Access Journals (Sweden)

    Farahman Farrokhi

    2017-10-01

    Full Text Available One of the important concerns of communicative way of learning is to be able to convey meaning and not just physical words in a language. The study of speech acts could possibly help achieve this. When using speech acts, one should take into consideration the conversational rules of the language and in order to establish a safe and harmonious conversation, it is better to use certain strategies to eliminate their possible threatening effects. Attempt is made in the present study using a mixed-method design, to investigate the employment of politeness strategies proposed by Brown and Levinson (1987, among the interlocutors with different power relations in English and Farsi novels, when using the speech act of refusal. The speech act of refusal addressed in this study is a face threatening act (FTA (Brown & Levinson, 1987, which may be used differently by speakers of different languages, with different power relations, in different situations. The materials used are five English and five Farsi novels written by native speakers of English and Farsi. The taxonomy of Beebe, Takahashi and Uliss-Weltz (1990 were employed in order to categories different types of refusal. The frequency of their use and their percentages were calculated manually. The results indicated that even though reflecting two different cultures, the similarities among the English and Farsi novels regarding the use of both speech acts, were more than the differences. The differences were more obvious in the employment of politeness strategies. The findings of this study will probably give insights into the pragmatic and conversational rules of both languages.

  6. Long Term Seismic Observation in Mariana by OBSs : Double Seismic Zone and Upper Mantle Structure

    Science.gov (United States)

    Shiobara, H.; Sugioka, H.; Mochizuki, K.; Oki, S.; Kanazawa, T.; Fukao, Y.; Suyehiro, K.

    2005-12-01

    In order to obtain the deep arc structural image of Mariana, a large-scale seismic observation by using 58 long-term ocean bottom seismometers (LTOBS) had been performed from June 2003 until April 2004, which is a part of the MARGINS program funded by the NSF. Prior to this observation, a pilot long-term seismic array observation was conducted in the same area by using 10 LTOBSs from Oct. 2001 until Feb. 2003. At that time, 8 LTOBSs were recovered but one had no data. Recently, 2 LTOBSs, had troubles in the releasing, were recovered by the manned submersible (Shinkai 6500, Jamstec) for the research of the malfunction in July 2005. By using all 9 LTOBS's data, those are about 11 months long, hypocenter determination was performed and more than 3000 local events were found. Even with the 1D velocity structure based on the iasp91 model, double seismic zones and a systematic shift of epicenters between the PDE and this study were observed. To investigate the detail of hypocenter distribution and the 3D velocity structure, the DD inversion (tomoDD: Zhang and Thurber, 2003) was applied for this data set with the 1D structure initial model except for the crust, which has been surveyed by using a dense airgun-OBS system (Takahashi et al., 2003). The result of relocated hypocenters shows clear double seismic zones until about 200 km depth, a high activity area around the fore-arc serpentine sea-mount, the Big Blue, and a lined focuses along the current ridge axis in the back-arc basin, and the result of the tomography shows a image of subducting slab and a low-Vs region below the same sea-mount mentioned. The wedge mantle structure was not clearly resolved due to the inadequate source-receiver coverage, which will be done in the recent experiment.

  7. OS EFEITOS DO TREINO DE TIRO COM ZARABATANA NA CAPACIDADE RESPIRATÓRIA DE PESSOAS COM TRISSOMIA 21 APÓS UM ANO DE DESTREINO

    Directory of Open Access Journals (Sweden)

    C. Leitão

    2015-05-01

    Full Text Available Em 2011 estimava-se que houvesse entre 12 a 15 mil crianças com Trissomia 21 (Martinho, 2011. A capacidade respiratória está relacionada com a permuta do ar atmosférico com o ar existente no interior dos pulmões (McArdle, Katch & Katch, 2001, sendo que este processo apresenta-se mais dificultado em sujeitos com Trissomia 21 pois exibem valores de pressão expiratória máxima abaixo dos 50% e de pressão inspiratória máxima abaixo dos 60% previstos para a população sedentária saudável (Castoldi, Périco & Grave, 2012. O treino de tiro com zarabatana tem influência no aumento da pressão expiratória máxima e tem um efeito sobre a função respiratória, semelhante ao treino muscular de músculos expiratório em adultos (Nagasaki, Okada, Kai, & Takahashi, 2010. Segundo (Mariñas & Higuchi, 2010 a zarabatana trata-se de um tubo comprido, através do qual são expelidos pequenos projéteis, através do sopro com objetivo de atingir um alvo. A introdução da atividade de tiro com zarabatana surge de modo a minimizar os problemas respiratórios desta população, porque envolve todo o ciclo respiratório e por ser uma atividade lúdica. Objetivo: Comparar os efeitos do treino de tiro com zarabatana na capacidade respiratória de pessoas com trissomia 21 após um ano de destreino.

  8. Priority substances in a SW European coastal lagoon - Ria Formosa, Portugal. Twenty years of temporal evolution of metals and butyltins

    Science.gov (United States)

    Moreira da Silva, Manuela; Carvalho, Pedro; Paquete, Rita; Nuno Duarte, Duarte; Chícharo, Luís

    2013-04-01

    In the last years the European Union has decided to specifically include nickel, cadmium, plumb and TBT in its list of priority substances in water. Trace metals pose a significant threat to organisms because above threshold availability, act as enzyme inhibitors resulting in adverse ecological effects to sediment-associated biota (e.g. macrophytes, benthos, demersal fish) and to higher-biota (e.g. pelagic fish and aquatic birds). Since 2003 International Maritime Organization called for a ban of the application of tributyltin-based paints. Wide distribution, high hydrophobicity, and persistence of organotin compounds have raised concern about their bioaccumulation, their potential biomagnification in the food webs, and their adverse effects to human health and environment, particularly most recent reviews focuses on possible endocrine disrupting effects of OT's (Galloway, 2006; Nakanishi, 2007; Takahashi et al., 1999; Veltman et al., 2006). Saltmarshes are highly heterogeneous environments that have been suffered pressures by the increasing urbanization and industrialization in the adjacent areas. Saltmarsh sediments integrate inputs of contaminants, like metals and organotin compounds and may act as long-term sources of contaminants. At the Ria Formosa saltmarsh several activities were responsible for long-term contaminants, some of them considered priority substances. This work aims to provide information about the present levels and temporal evolution in the last decades of metals (Mn, Zn, Cu, Cr, Ni, Pb, Mo, Cd and Ag, in addition to Fe and Al) and butyltins (TBT, DBT and MBT) in saltmarsh sediments at south of Portugal. Metals were analysed by atomic absorption spectrometry-AAS. Butyltins were determined, after derivatization, by solid phase micro extraction combined with gas chromatography with mass spectrometry (MS/MS). Results showed that legislation was an effective instrument for the decreasing of contamination levels, to sustainable values to ecosystem

  9. International Symposium on Interfacial Joining and Surface Technology (IJST2013)

    Science.gov (United States)

    Takahashi, Yasuo

    2014-08-01

    Interfacial joining (bonding) is a widely accepted welding process and one of the environmentally benign technologies used in industrial production. As the bonding temperature is lower than the melting point of the parent materials, melting of the latter is kept to a minimum. The process can be based on diffusion bonding, pressure welding, friction welding, ultrasonic bonding, or brazing-soldering, all of which offer many advantages over fusion welding. In addition, surface technologies such as surface modification, spraying, coating, plating, and thin-film formation are necessary for advanced manufacturing, fabrication, and electronics packaging. Together, interfacial joining and surface technology (IJST) will continue to be used in various industrial fields because IJST is a very significant form of environmentally conscious materials processing. The international symposium of IJST 2013 was held at Icho Kaikan, Osaka University, Japan from 27-29 November, 2013. A total of 138 participants came from around the world to attend 56 oral presentations and 36 posters presented at the symposium, and to discuss the latest research and developments on interfacial joining and surface technologies. This symposium was also held to commemorate the 30th anniversary of the Technical Commission on Interfacial Joining of the Japan Welding Society. On behalf of the chair of the symposium, it is my great pleasure to present this volume of IOP Conference Series: Materials Science and Engineering (MSE). Among the presentations, 43 papers are published here, and I believe all of the papers have provided the welding community with much useful information. I would like to thank the authors for their enthusiastic and excellent contributions. Finally, I would like to thank all members of the committees, secretariats, participants, and everyone who contributed to this symposium through their support and invaluable effort for the success of IJST 2013. Yasuo Takahashi Chair of IJST 2013

  10. Neuraminidases 3 and 4 regulate neuronal function by catabolizing brain gangliosides.

    Science.gov (United States)

    Pan, Xuefang; De Aragão, Camila De Britto Pará; Velasco-Martin, Juan P; Priestman, David A; Wu, Harry Y; Takahashi, Kohta; Yamaguchi, Kazunori; Sturiale, Luisella; Garozzo, Domenico; Platt, Frances M; Lamarche-Vane, Nathalie; Morales, Carlos R; Miyagi, Taeko; Pshezhetsky, Alexey V

    2017-08-01

    Gangliosides (sialylated glycolipids) play an essential role in the CNS by regulating recognition and signaling in neurons. Metabolic blocks in processing and catabolism of gangliosides result in the development of severe neurologic disorders, including gangliosidoses manifesting with neurodegeneration and neuroinflammation. We demonstrate that 2 mammalian enzymes, neuraminidases 3 and 4, play important roles in catabolic processing of brain gangliosides by cleaving terminal sialic acid residues in their glycan chains. In neuraminidase 3 and 4 double-knockout mice, G M3 ganglioside is stored in microglia, vascular pericytes, and neurons, causing micro- and astrogliosis, neuroinflammation, accumulation of lipofuscin bodies, and memory loss, whereas their cortical and hippocampal neurons have lower rate of neuritogenesis in vitro Double-knockout mice also have reduced levels of G M1 ganglioside and myelin in neuronal axons. Furthermore, neuraminidase 3 deficiency drastically increased storage of G M2 in the brain tissues of an asymptomatic mouse model of Tay-Sachs disease, a severe human gangliosidosis, indicating that this enzyme is responsible for the metabolic bypass of β-hexosaminidase A deficiency. Together, our results provide the first in vivo evidence that neuraminidases 3 and 4 have important roles in CNS function by catabolizing gangliosides and preventing their storage in lipofuscin bodies.-Pan, X., De Britto Pará De Aragão, C., Velasco-Martin, J. P., Priestman, D. A., Wu, H. Y., Takahashi, K., Yamaguchi, K., Sturiale, L., Garozzo, D., Platt, F. M., Lamarche-Vane, N., Morales, C. R., Miyagi, T., Pshezhetsky, A. V. Neuraminidases 3 and 4 regulate neuronal function by catabolizing brain gangliosides. © FASEB.

  11. Drawing for Traffic Marking Using Bidirectional Gradient-Based Detection with MMS LIDAR Intensity

    Science.gov (United States)

    Takahashi, G.; Takeda, H.; Nakamura, K.

    2016-06-01

    Recently, the development of autonomous cars is accelerating on the integration of highly advanced artificial intelligence, which increases demand for a digital map with high accuracy. In particular, traffic markings are required to be precisely digitized since automatic driving utilizes them for position detection. To draw traffic markings, we benefit from Mobile Mapping Systems (MMS) equipped with high-density Laser imaging Detection and Ranging (LiDAR) scanners, which produces large amount of data efficiently with XYZ coordination along with reflectance intensity. Digitizing this data, on the other hand, conventionally has been dependent on human operation, which thus suffers from human errors, subjectivity errors, and low reproductivity. We have tackled this problem by means of automatic extraction of traffic marking, which partially accomplished to draw several traffic markings (G. Takahashi et al., 2014). The key idea of the method was extracting lines using the Hough transform strategically focused on changes in local reflection intensity along scan lines. However, it failed to extract traffic markings properly in a densely marked area, especially when local changing points are close each other. In this paper, we propose a bidirectional gradient-based detection method where local changing points are labelled with plus or minus group. Given that each label corresponds to the boundary between traffic markings and background, we can identify traffic markings explicitly, meaning traffic lines are differentiated correctly by the proposed method. As such, our automated method, a highly accurate and non-human-operator-dependent method using bidirectional gradient-based algorithm, can successfully extract traffic lines composed of complex shapes such as a cross walk, resulting in minimizing cost and obtaining highly accurate results.

  12. Diversity, Localization, and Physiological Properties of Filamentous Microbes Belonging to Chloroflexi Subphylum I in Mesophilic and Thermophilic Methanogenic Sludge Granules

    Science.gov (United States)

    Yamada, Takeshi; Sekiguchi, Yuji; Imachi, Hiroyuki; Kamagata, Yoichi; Ohashi, Akiyoshi; Harada, Hideki

    2005-01-01

    We previously reported that the thermophilic filamentous anaerobe Anaerolinea thermophila, which is the first cultured representative of subphylum I of the bacterial phylum Chloroflexi, not only was one of the predominant constituents of thermophilic sludge granules but also was a causative agent of filamentous sludge bulking in a thermophilic (55°C) upflow anaerobic sludge blanket (UASB) reactor in which high-strength organic wastewater was treated (Y. Sekiguchi, H. Takahashi, Y. Kamagata, A. Ohashi, and H. Harada, Appl. Environ. Microbiol. 67:5740-5749, 2001). To further elucidate the ecology and function of Anaerolinea-type filamentous microbes in UASB sludge granules, we surveyed the diversity, distribution, and physiological properties of Chloroflexi subphylum I microbes residing in UASB granules. Five different types of mesophilic and thermophilic UASB sludge were used to analyze the Chloroflexi subphylum I populations. 16S rRNA gene cloning-based analyses using a 16S rRNA gene-targeted Chloroflexi-specific PCR primer set revealed that all clonal sequences were affiliated with the Chloroflexi subphylum I group and that a number of different phylotypes were present in each clone library, suggesting the ubiquity and vast genetic diversity of these populations in UASB sludge granules. Subsequent fluorescence in situ hybridization (FISH) of the three different types of mesophilic sludge granules using a Chloroflexi-specific probe suggested that all probe-reactive cells had a filamentous morphology and were widely distributed within the sludge granules. The FISH observations also indicated that the Chloroflexi subphylum I bacteria were not always the predominant populations within mesophilic sludge granules, in contrast to thermophilic sludge granules. We isolated two mesophilic strains and one thermophilic strain belonging to the Chloroflexi subphylum I group. The physiological properties of these isolates suggested that these populations may contribute to the

  13. Does early improvement in depressive symptoms predict subsequent remission in patients with depression who are treated with duloxetine?

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    Sueki A

    2016-05-01

    Full Text Available Akitsugu Sueki, Eriko Suzuki, Hitoshi Takahashi, Jun Ishigooka Department of Neuropsychiatry, Tokyo Women’s Medical University, Tokyo, Japan Purpose: In this prospective study, we examined whether early reduction in depressive symptoms predicts later remission to duloxetine in the treatment of depression, as monitored using the Montgomery–Asberg Depression Rating Scale (MADRS. Patients and methods: Among the 106 patients who were enrolled in this study, 67 were included in the statistical analysis. A clinical evaluation using the MADRS was performed at weeks 0, 4, 8, 12, and 16 after commencing treatment. For each time point, the MADRS total score was separated into three components: dysphoria, retardation, and vegetative scores. Results: Remission was defined as an MADRS total score of ≤10 at end point. From our univariate logistic regression analysis, we found that improvements in both the MADRS total score and the dysphoria score at week 4 had a significant interaction with subsequent remission. Furthermore, age and sex were significant predictors of remission. There was an increase of approximately 4% in the odds of remission for each unit increase in age, and female sex had an odds of remission of 0.318 times that of male sex (remission rate for men was 73.1% [19/26] and for women 46.3% [19/41]. However, in the multivariate model using the change from baseline in the total MADRS, dysphoria, retardation, and vegetative scores at week 4, in which age and sex were included as covariates, only sex retained significance, except for an improvement in the dysphoria score. Conclusion: No significant interaction was found between early response to duloxetine and eventual remission in this study. Sex difference was found to be a predictor of subsequent remission in patients with depression who were treated with duloxetine, with the male sex having greater odds of remission. Keywords: antidepressant, early response, sex difference, serotonin

  14. Introduction to the special issue on recent advances and developments in atmospheric electricity

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    Cheng-Ling Kuo

    2017-01-01

    Full Text Available The special issue highlights the state of research efforts on the atmospheric electricity in Asia, particularly in Taiwan, China and Japan. In some ways, this can also be viewed as a commemorative issue for the ISUAL/FORMOSAT2 experiment, which officially ended its mission in July 2016. The first breakthrough on atmospheric electricity research in Taiwan was achieved through ground campaigns, including the investigations of transient luminous events (TLEs near the vicinity of Taiwan (Su et al. 2002; Hsu et al. 2003 and gigantic jet (Su et al. 2003. From 2004 - 2016, the satellite mission of ISUAL (Imager of Sprite/Upper Atmospheric Lightning onboard the FORMOSAT2 satellite was conducted, and a few important results are reported in (Hsu et al. 2017; this issue. The ISUAL mission is a successful international cooperation between Taiwan, USA and Japan (Chern et al. 2003; Su et al. 2005; Chen et al. 2008. The past and current TLE scientific missions include the Mediterranean Israeli Dust Experiment (MEIDEX sprite campaign onboard the space shuttle Columbia in 2003 (Yair et al. 2003, a Japanese micro satellite SPRITE-SAT (2010- (Takahashi et al. 2010, the Japan mission Global Lightning and Sprite Measurements on Japanese Experiment Module (JEM-GLIMS on the International Space Station (ISS from 2011 (Sato et al. 2015, 2017, NASA Crew Earth Observation program (2011 - 2012 (Jehl et al. 2013, and the Iriss mission by Denmark’s first astronaut, Andreas Mogensen on the ISS (Chanrion et al. 2017. The upcoming orbit missions including ASIM (Atmosphere-Space Interaction Monitor (Neubert 2009 and TARANIS (Tool for the Analysis of RAdiations from lightNIngs and Sprites (Farges et al. 2017. The ISUAL mission besides being a pioneer atmospheric electricity program, also is a historic space platform dedicating to the study of TLEs in the middle atmosphere (Hsu et al. 2017; this issue.

  15. Significance of downregulation of renal organic cation transporter (SLC47A1 in cisplatin-induced proximal tubular injury

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    Mizuno T

    2015-07-01

    Full Text Available Tomohiro Mizuno,1–3 Waichi Sato,2,3 Kazuhiro Ishikawa,4 Yuki Terao,1 Kazuo Takahashi,2 Yukihiro Noda,5 Yukio Yuzawa,2 Tadashi Nagamatsu1 1Department of Analytical Pharmacology, Meijo University Faculty of Pharmacy, Nagoya, 2Department of Nephrology, School of Medicine, Fujita Health University, Toyoake, 3Department of Nephrology, Nagoya University School of Medicine, Nagoya, 4Department of Neuropsychopharmacology and Hospital Pharmacy, Nagoya University Graduate School of Medicine, Nagoya, 5Division of Clinical Sciences and Neuropsychopharmacology, Meijo University Faculty of Pharmacy, Nagoya, Japan Background/aim: To elucidate the mechanism responsible for developing acute kidney injury in patients with diabetes mellitus, we also evaluated the issue of whether advanced glycation endproducts (AGEs influence the expressions of multi antimicrobial extrusion protein (MATE1/SLC47A1 in tubular cells. Materials and methods: To detect changing expression of MATE1/SLC47A1 in dose- and time-dependent manners, human proximal tubular epithelial cells were incubated with AGE-aggregated-human serum albumin. As a function assay for MATE1/SLC47A1, human proximal tubular epithelial cells were incubated with cisplatin or carboplatin. Results: On incubation with AGEs, the expressions of MATE1/SLC47A1 were decreased in tubular cells. In addition, the toxicities of cisplatin were increased in tubular cells that had been pretreated with AGEs. However, the toxicities of carboplatin were smaller than that of cisplatin in proximal tubular epithelial cells. Conclusion: The expression of the MATE1/SLC47A1 is decreased by AGEs, which increases the risk for proximal tubular injury. Keywords: advanced glycation endproducts, cisplatin, SLC47A1, diabetes mellitus, acute kidney injury

  16. Effects of safflower seed extract on arterial stiffness

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    Katsuya Suzuki

    2010-11-01

    Full Text Available Katsuya Suzuki1, Shigekazu Tsubaki2, Masami Fujita3, Naoto Koyama1, Michio Takahashi1, Kenji Takazawa41Research Institute for Health Fundamentals, Ajinomoto Co., Inc., Kawasaki; 2Samoncho Clinic, Tokyo; 3Shinanozaka Clinic, Tokyo; 4Tokyo Medical University Hachioji Medical Center, Tokyo, JapanAbstract: Safflower seed extract (SSE contains characteristic polyphenols and serotonin derivatives (N-(p-coumaroyl serotonin and N-feruloylserotonin, which are reported to inhibit oxidation of low-density lipoprotein (LDL, formation of atherosclerotic plaques, and improve arterial stiffness as assessed by pulse wave analysis in animal models. The effects of long-term supplementation with SSE on arterial stiffness in human subjects were evaluated. This double-blind, placebo-controlled study was conducted in 77 males (35–65 years and 15 postmenopausal females (55–65 years with high-normal blood pressure or mild hypertension who were not undergoing treatment. Subjects received SSE (70 mg/day as serotonin derivatives or placebo for 12 weeks, and pulse wave measurements, ie, second derivative of photoplethysmogram (SDPTG, augmentation index, and brachial-ankle pulse wave velocity (baPWV were conducted at baseline, and at weeks 4, 8, and 12. Vascular age estimated by SDPTG aging index improved in the SSE-supplemented group when compared with the placebo group at four (P = 0.0368 and 12 weeks (P = 0.0927. The trend of augmentation index reduction (P = 0.072 versus baseline was observed in the SSE-supplemented group, but reduction of baPWV by SSE supplementation was not observed. The SSE-supplemented group also showed a trend towards a lower malondialdehyde-modified-LDL autoantibody titer at 12 weeks from baseline. These results suggest long-term ingestion of SSE in humans could help to improve arterial stiffness.Keywords: safflower, serotonin derivatives, antioxidants, augmentation index, pulse wave velocity

  17. Irrigation port hydration in phacoemulsification surgery

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    Suzuki H

    2018-01-01

    Full Text Available Hisaharu Suzuki,1 Yoichiro Masuda,2 Yuki Hamajima,1 Hiroshi Takahashi3 1Department of Ophthalmology, Nippon Medical School Musashikosugi Hospital, Kawasaki City, Kanagawa, 2Department of Ophthalmology, The Jikei University, Katsushika Medical Center, Tokyo, 3Department of Ophthalmology, Nippon Medical School, Tokyo, Japan Background: In most cases, hydration is performed by water injection into the stromal tissue with a needle. The technique is simple, however it is sometimes troublesome.Purpose: We describe a simple technique for hydrating the corneal stroma in cataract surgery using an irrigation port.Patients and methods: The technique began by pushing the irrigation port against the corneal stroma for a few seconds during phacoemulsification, which generated edema in the corneal incision that subsequently prevented leakage. This procedure is called the hydration using irrigation port (HYUIP technique. A total of 60 eyes were randomized and placed in two groups, 30 eyes underwent surgeries using the HYUIP technique (HYUIP group and 30 eyes underwent surgeries without the HYUIP technique (control. The three points evaluated during each surgery included 1 the occurrence of anterior chamber collapse during the pulling out of the I/A tip after inserting the intraocular lens, 2 the need for conventional hydration, and 3 watertight completion at the end stage of surgery.Results: The anterior chamber collapse and the need for conventional hydration were significantly smaller in the HYUIP group compared to the control group. Regarding the self-sealing completion, no significant difference was observed between the two groups.Conclusion: The HYUIP technique is an effective method for creating self-sealing wound. In addition, this technique helps to prevent anterior chamber collapse. Keywords: cataract surgery, hydration, irrigation and aspiration, phacoemulsification, wound, self-sealing 

  18. The clinical course of symptomatic deep vein thrombosis after 3 months of anticoagulant therapy using fondaparinux/edoxaban or fondaparinux/vitamin K antagonist

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    Shimizu K

    2018-02-01

    Full Text Available Kazuhiro Shimizu, Takuo Iiduka, Shuji Sato, Hajime Kiyokawa, Takahiro Nakagami, Hiroshi Mikamo, Masayo Kawazoe, Mao Takahashi, Mahito Noro Department of Internal Medicine, Toho University Sakura Medical Center, Sakura City, Chiba, Japan Background: For the management of venous thromboembolism (VTE, providing anticoagulant therapy within the therapeutic range has been a major challenge, as conventional therapy with unfractionated heparin (UFH and vitamin K antagonist (VKA requires frequent laboratory monitoring and dose adjustment. Recently, fondaparinux and edoxaban are being used as beneficial alternatives to UFH and VKA.Methods: We evaluated the clinical course of symptomatic deep vein thrombosis (DVT in patients who received the 3-month anticoagulation therapy with fondaparinux/edoxaban (Group A; n=40 in comparison with the findings from our previous experience of patients who received the fondaparinux/VKA combination (Group B; n=33.Results: In both Groups A and B, serum D-dimer was significantly improved after treatment (p<0.001. The thrombus volume assessed by quantitative ultrasound thrombosis (QUT score was significantly reduced in both groups (p<0.001. There was no difference in the proportion of patients who were normalized (ie, disappearance of DVT between the groups, although Group A had significantly more patients who were normalized or improved (ie, disappearance and reduction of DVT (p<0.001. No bleeding event was observed in either group. However, in one patient in Group B, worsening of DVT and development of symptomatic PE were observed.Conclusion: Fondaparinux/edoxaban therapy is as effective as fondaparinux/VKA. This treatment has the possible advantage in thrombus regression. This would be a beneficial therapeutic option for both patients and physicians. Keywords: venous thromboembolism, deep vein thrombosis, anticoagulant therapy, quantitative ultrasound thrombosis score, FXa inhibitors

  19. International Symposium on Interfacial Joining and Surface Technology (IJST2013)

    International Nuclear Information System (INIS)

    Takahashi, Yasuo

    2014-01-01

    Interfacial joining (bonding) is a widely accepted welding process and one of the environmentally benign technologies used in industrial production. As the bonding temperature is lower than the melting point of the parent materials, melting of the latter is kept to a minimum. The process can be based on diffusion bonding, pressure welding, friction welding, ultrasonic bonding, or brazing-soldering, all of which offer many advantages over fusion welding. In addition, surface technologies such as surface modification, spraying, coating, plating, and thin-film formation are necessary for advanced manufacturing, fabrication, and electronics packaging. Together, interfacial joining and surface technology (IJST) will continue to be used in various industrial fields because IJST is a very significant form of environmentally conscious materials processing. The international symposium of IJST 2013 was held at Icho Kaikan, Osaka University, Japan from 27–29 November, 2013. A total of 138 participants came from around the world to attend 56 oral presentations and 36 posters presented at the symposium, and to discuss the latest research and developments on interfacial joining and surface technologies. This symposium was also held to commemorate the 30th anniversary of the Technical Commission on Interfacial Joining of the Japan Welding Society. On behalf of the chair of the symposium, it is my great pleasure to present this volume of IOP Conference Series: Materials Science and Engineering (MSE). Among the presentations, 43 papers are published here, and I believe all of the papers have provided the welding community with much useful information. I would like to thank the authors for their enthusiastic and excellent contributions. Finally, I would like to thank all members of the committees, secretariats, participants, and everyone who contributed to this symposium through their support and invaluable effort for the success of IJST 2013. Yasuo Takahashi Chair of IJST 2013

  20. Estimation of Regional-Scale Actual Evapotranspiration in Okayama prefecture in Japan using Complementary Relationship

    Science.gov (United States)

    Moroizumi, T.; Yamamoto, M.; Miura, T.

    2008-12-01

    It is important to estimate accurately a water balance in watershed for proposing a reuse of water resources and a proper settlement of water utilization. Evapotranspiration (ET) is an important factor of water balance. Therefore, it is needed to estimate accurately the actual ET. The objective of this study is to estimate accurately monthly actual ET in Yoshii, Asahi, and Takahashi River watersheds in Okayama prefecture from 1999 to 2000. The monthly actual ET was calculated by a Morton and a modified Brutsaert and Stricker (B&S) method, using Automated Meteorological Data Acquisition Systems (AMeDAS) in the basin. The actual ET was estimated using land covers which were classified in 11 categories. The land covers includes the effects of albedo. The actual ET was related to the elevation at each AMeDAS station. Using this relationship, the actual ET at the 1 or 5 km grid-interval mesh in the basin was calculated, and finally, the distribution of actual ET was mapped. The monthly ET estimated by the modified B&S method were smaller than that by Morton method which showed a same tendency as the Penman potential ET (PET). The annual values of Morton"fs ET, modified B&S"fs ET, and PET were estimated as 796, 645, and 800 mm, respectively. The ET by the modified B&S was larger in hilly and mountainous areas than in settlement or city. In general, it was a reasonable result because city or settlement areas were covered with concrete and asphalt and the ET was controlled.

  1. Seasonal and spatial variability of the organic matter-to-organic carbon mass ratios in Chinese urban organic aerosols and a first report of high correlations between aerosol oxalic acid and zinc

    Science.gov (United States)

    Xing, L.; Fu, T.-M.; Cao, J. J.; Lee, S. C.; Wang, G. H.; Ho, K. F.; Cheng, M.-C.; You, C.-F.; Wang, T. J.

    2013-01-01

    We calculated the organic matter to organic carbon mass ratios (OM/OC mass ratios) in PM2.5 collected from 14 Chinese cities during summer and winter of 2003 and analyzed the causes for their seasonal and spatial variability. The OM/OC mass ratios were calculated two ways. Using a mass balance method, the calculated OM/OC mass ratios averaged 1.92 ± 0.39 yr-round, with no significant seasonal or spatial variation. The second calculation was based on chemical species analyses of the organic compounds extracted from the PM2.5 samples using dichloromethane/methanol and water. The calculated OM/OC mass ratio in summer was relatively high (1.75 ± 0.13) and spatially-invariant, due to vigorous photochemistry and secondary OA production throughout the country. The calculated OM/OC mass ratio in winter (1.59 ± 0.18) was significantly lower than that in summer, with lower values in northern cities (1.51 ± 0.07) than in southern cities (1.65 ± 0.15). This likely reflects the wider usage of coal for heating purposes in northern China in winter, in contrast to the larger contributions from biofuel and biomass burning in southern China in winter. On average, organic matters constituted 36% and 34% of Chinese urban PM2.5 mass in summer and winter, respectively. We reported, for the first time, high correlations between Zn and oxalic acid in Chinese urban aerosols in summer. This is consistent with the formation of stable Zn oxalate complex in the aerosol phase previously proposed by Furukawa and Takahashi (2011). We found that many other dicarboxylic acids were also highly correlated with Zn in the summer Chinese urban aerosol samples, suggesting that they may also form stable organic complexes with Zn. Such formation may have profound implications for the atmospheric abundance and hygroscopic property of aerosol dicarboxylic acids.

  2. DRAWING FOR TRAFFIC MARKING USING BIDIRECTIONAL GRADIENT-BASED DETECTION WITH MMS LIDAR INTENSITY

    Directory of Open Access Journals (Sweden)

    G. Takahashi

    2016-06-01

    Full Text Available Recently, the development of autonomous cars is accelerating on the integration of highly advanced artificial intelligence, which increases demand for a digital map with high accuracy. In particular, traffic markings are required to be precisely digitized since automatic driving utilizes them for position detection. To draw traffic markings, we benefit from Mobile Mapping Systems (MMS equipped with high-density Laser imaging Detection and Ranging (LiDAR scanners, which produces large amount of data efficiently with XYZ coordination along with reflectance intensity. Digitizing this data, on the other hand, conventionally has been dependent on human operation, which thus suffers from human errors, subjectivity errors, and low reproductivity. We have tackled this problem by means of automatic extraction of traffic marking, which partially accomplished to draw several traffic markings (G. Takahashi et al., 2014. The key idea of the method was extracting lines using the Hough transform strategically focused on changes in local reflection intensity along scan lines. However, it failed to extract traffic markings properly in a densely marked area, especially when local changing points are close each other. In this paper, we propose a bidirectional gradient-based detection method where local changing points are labelled with plus or minus group. Given that each label corresponds to the boundary between traffic markings and background, we can identify traffic markings explicitly, meaning traffic lines are differentiated correctly by the proposed method. As such, our automated method, a highly accurate and non-human-operator-dependent method using bidirectional gradient-based algorithm, can successfully extract traffic lines composed of complex shapes such as a cross walk, resulting in minimizing cost and obtaining highly accurate results.

  3. Boron-neutron capture therapy for incurable cancer and inoperable brain tumors

    International Nuclear Information System (INIS)

    Hatanaka, Hiroshi

    1993-01-01

    Recent advances in cancer diagnosis and treatment have not yet improved the survival rate of patients with cancers of the brain, liver, etc. In these organs, an extirpation of the organ, which can be done for stomach, breast, cervix, lung, etc. is not allowed, and this fact is the cause of poor therapeutic results. Boron-neutron capture therapy (BNCT) utilizes the nuclear reaction which will take place between the boron-10 (loaded in the cancer cells artificially) and the thermal neutrons (delivered by reactors). The secondary radiations, helium and lithium hit the cancer cell itself and cause the death of the cancer cell while sparing the surrounding normal cells. BNCT is now being tried also by Oda of Kyoto University (9 cases) and by Nakagawa of Tokushima University (7 cases). It has been tried by Mishima (Kobe University) on 12 skin melanoma patients, proving satisfactory local control of the melanomas. Mercaptoundecahydrododecaborate (BHS) and boronophenylalanine (BPA) have been tried for brain tumors and for melanoma. For cancers of the liver and abdominal viscerae, antibody to the tumor specific antigen has been considered a good carrier of boron-10. Surgeons Takahashi, Fujii, Fujii, Yanagie, and Sekiguchi and immunologist Nariuchi of Tokyo University have been involved in the research and have obtained encouraging results in animals. Hatanaka has been proving good effect of BNCT upon giant cerebral arteriovenous malformation (AVM) and skull base meningioma. These diseases, although pathologically benign, have posed difficult problems in neurosurgery. It will be exciting good news to the patients. In conclusion, BNCT appears to be a good means to treat difficult lesions in the brain and other organs which defy sophisticated modern therapeutic means. (author)

  4. Telemedicine: an enhanced emergency care program for older adults

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    Takahashi PY

    2014-07-01

    Full Text Available Paul Y Takahashi,1 Anupam Chandra,1 Frederick North,1 Jennifer L Pecina,2 Benjavan Upatising,3 Gregory J Hanson11Mayo Clinic Division of Primary Care Internal Medicine, 2Mayo Clinic Department of Family Medicine, Rochester, MN, USA; 3Regenstrief Center for Healthcare Engineering, Purdue University, West Lafayette, IN, USAAbstract: Recent changes and consolidations in health care systems have resulted in an increase in new health care delivery models. Telemedicine holds great promise as one of these models. There is a great potential for new patient evaluation and treatment models in emergency care (EC, especially when patients are miles away from a medical team. Evaluations can be performed in a patient's home, a nursing care facility, and in hospitals that focus on advanced subspecialty care. Due to rapid developments in this area, current care models are constantly being evaluated and modified. This review article outlines current telemedicine models for EC and summarizes their potential benefits to patients and the health care system. The review examines the role that the telephone, a fundamental tool of telemedicine, plays in these new models. The review also examines evidence of improved health care outcomes by highlighting the role of telemedicine in reducing hospitalizations. The patient is the primary focus; as a result, this review also examined patient experiences and satisfaction levels regarding telemedicine health care teams. The authors support these technological advances and their potential for information transfer. Health care providers need to continue developing these models by making use of increasing amounts of information. One of the main implementation barriers of these new models in the US and other countries is the issue of payment and reimbursement. Despite this, advancements in EC telemedicine continue.Keywords: telemedicine, emergency care, geriatric, patient evaluation models

  5. Numerical experiment on tsunami deposit distribution process by using tsunami sediment transport model in historical tsunami event of megathrust Nankai trough earthquake

    Science.gov (United States)

    Imai, K.; Sugawara, D.; Takahashi, T.

    2017-12-01

    A large flow caused by tsunami transports sediments from beach and forms tsunami deposits in land and coastal lakes. A tsunami deposit has been found in their undisturbed on coastal lakes especially. Okamura & Matsuoka (2012) found some tsunami deposits in the field survey of coastal lakes facing to the Nankai trough, and tsunami deposits due to the past eight Nankai Trough megathrust earthquakes they identified. The environment in coastal lakes is stably calm and suitable for tsunami deposits preservation compared to other topographical conditions such as plains. Therefore, there is a possibility that the recurrence interval of megathrust earthquakes and tsunamis will be discussed with high resolution. In addition, it has been pointed out that small events that cannot be detected in plains could be separated finely (Sawai, 2012). Various aspects of past tsunami is expected to be elucidated, in consideration of topographical conditions of coastal lakes by using the relationship between the erosion-and-sedimentation process of the lake bottom and the external force of tsunami. In this research, numerical examination based on tsunami sediment transport model (Takahashi et al., 1999) was carried out on the site Ryujin-ike pond of Ohita, Japan where tsunami deposit was identified, and deposit migration analysis was conducted on the tsunami deposit distribution process of historical Nankai Trough earthquakes. Furthermore, examination of tsunami source conditions is possibly investigated by comparison studies of the observed data and the computation of tsunami deposit distribution. It is difficult to clarify details of tsunami source from indistinct information of paleogeographical conditions. However, this result shows that it can be used as a constraint condition of the tsunami source scale by combining tsunami deposit distribution in lakes with computation data.

  6. Application of a stratum-specific likelihood ratio analysis in a screen for depression among a community-dwelling population in Japan

    Directory of Open Access Journals (Sweden)

    Sugawara N

    2017-09-01

    Full Text Available Norio Sugawara,1,2 Ayako Kaneda,2 Ippei Takahashi,3 Shigeyuki Nakaji,3 Norio Yasui-Furukori2 1Department of Clinical Epidemiology, Translational Medical Center, National Center of Neurology and Psychiatry, Kodaira, Tokyo, 2Department of Neuropsychiatry, Hirosaki University School of Medicine, Hirosaki, 3Department of Social Medicine, Hirosaki University School of Medicine, Hirosaki, Japan Background: Efficient screening for depression is important in community mental health. In this study, we applied a stratum-specific likelihood ratio (SSLR analysis, which is independent of the prevalence of the target disease, to screen for depression among community-dwelling individuals.Method: The Center for Epidemiologic Studies Depression Scale (CES-D and the Mini International Neuropsychiatric Interview (MINI were administered to 789 individuals (19–87 years of age who participated in the Iwaki Health Promotion Project 2011. Major depressive disorder (MDD was assessed using the MINI.Results: For MDD, the SSLRs were 0.13 (95% CI 0.04–0.40, 3.68 (95% CI 1.37–9.89, and 24.77 (95% CI 14.97–40.98 for CES–D scores of 0–16, 17–20, and above 21, respectively.Conclusion: The validity of the CES-D is confirmed, and SSLR analysis is recommended for its practical value for the detection of individuals with the risk of MDD in the Japanese community. Keywords: screening, depression, Center for Epidemiologic Studies Depression Scale, stratum-specific likelihood ratio

  7. En-face optical coherence tomography angiography of neovascularization elsewhere in hemicentral retinal vein occlusion

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    Sogawa K

    2015-10-01

    Full Text Available Kenji Sogawa, Taiji Nagaoka, Akihiro Ishibazawa, Atsushi Takahashi, Tomofumi Tani, Akitoshi Yoshida Department of Ophthalmology, Asahikawa Medical University, Asahikawa, Japan Purpose: To evaluate how the growth of neovascularization elsewhere (NVE was delineated in an eye with hemicentral retinal vein occlusion (CRVO using optical coherence tomography (OCT angiography. Patients and methods: We examined a 64-year-old man diagnosed with hemi-CRVO. The area around the occluded vein was scanned using a spectral-domain OCT device (RTVue XR Avanti. Blood flow was detected using the split-spectrum amplitude-decorrelation angiography (SSADA algorithm. Color fundus photography, fluorescein angiography (FA, and OCT angiography examinations were performed at the first visit and at 3 and 6 months postpresentation. Results: At the first visit, FA revealed delayed retinal venous filling and extensive areas of capillary nonperfusion. The patient underwent a trial of intravitreal ranibizumab injection (0.5 mg/0.05 mL for the treatment of macular edema. At 3 months postpresentation, there was no NVE around the occluded vein in the en-face SSADA image, but at 6 months, NVE appeared on the occluded veins. The en-face SSADA image showed the NVE structure in the fibrovascular membrane on the occluded vein more clearly than FA images. Conclusion: OCT angiography clearly visualized the sprouting of NVE in an eye with hemi-CRVO. New findings of the vascular structure of NVE in hemi-CRVO were revealed using the en-face SSADA algorithm. Keywords: OCT angiography, hemi-CRVO, NVE

  8. The evolutionarily conserved leprecan gene: its regulation by Brachyury and its role in the developing Ciona notochord.

    Science.gov (United States)

    Dunn, Matthew P; Di Gregorio, Anna

    2009-04-15

    In Ciona intestinalis, leprecan was identified as a target of the notochord-specific transcription factor Ciona Brachyury (Ci-Bra) (Takahashi, H., Hotta, K., Erives, A., Di Gregorio, A., Zeller, R.W., Levine, M., Satoh, N., 1999. Brachyury downstream notochord differentiation in the ascidian embryo. Genes Dev. 13, 1519-1523). By screening approximately 14 kb of the Ci-leprecan locus for cis-regulatory activity, we have identified a 581-bp minimal notochord-specific cis-regulatory module (CRM) whose activity depends upon T-box binding sites located at the 3'-end of its sequence. These sites are specifically bound in vitro by a GST-Ci-Bra fusion protein, and mutations that abolish binding in vitro result in loss or decrease of regulatory activity in vivo. Serial deletions of the 581-bp notochord CRM revealed that this sequence is also able to direct expression in muscle cells through the same T-box sites that are utilized by Ci-Bra in the notochord, which are also bound in vitro by the muscle-specific T-box activators Ci-Tbx6b and Ci-Tbx6c. Additionally, we created plasmids aimed to interfere with the function of Ci-leprecan and categorized the resulting phenotypes, which consist of variable dislocations of notochord cells along the anterior-posterior axis. Together, these observations provide mechanistic insights generally applicable to T-box transcription factors and their target sequences, as well as a first set of clues on the function of Leprecan in early chordate development.

  9. Evaluation of the histological and mechanical features of tendon healing in a rabbit model with the use of second-harmonic-generation imaging and tensile testing.

    Science.gov (United States)

    Hase, E; Sato, K; Yonekura, D; Minamikawa, T; Takahashi, M; Yasui, T

    2016-11-01

    This study aimed to evaluate the histological and mechanical features of tendon healing in a rabbit model with second-harmonic-generation (SHG) imaging and tensile testing. A total of eight male Japanese white rabbits were used for this study. The flexor digitorum tendons in their right leg were sharply transected, and then were repaired by intratendinous stitching. At four weeks post-operatively, the rabbits were killed and the flexor digitorum tendons in both right and left legs were excised and used as specimens for tendon healing (n = 8) and control (n = 8), respectively. Each specimen was examined by SHG imaging, followed by tensile testing, and the results of the two testing modalities were assessed for correlation. While the SHG light intensity of the healing tendon samples was significantly lower than that of the uninjured tendon samples, 2D Fourier transform SHG images showed a clear difference in collagen fibre structure between the uninjured and the healing samples, and among the healing samples. The mean intensity of the SHG image showed a moderate correlation (R 2 = 0.37) with Young's modulus obtained from the tensile testing. Our results indicate that SHG microscopy may be a potential indicator of tendon healing.Cite this article: E. Hase, K. Sato, D. Yonekura, T. Minamikawa, M. Takahashi, T. Yasui. Evaluation of the histological and mechanical features of tendon healing in a rabbit model with the use of second-harmonic-generation imaging and tensile testing. Bone Joint Res 2016;5:577-585. DOI: 10.1302/2046-3758.511.BJR-2016-0162.R1. © 2016 Yasui et al.

  10. The role of envelope shape in the localization of multiple sound sources and echoes in the barn owl.

    Science.gov (United States)

    Baxter, Caitlin S; Nelson, Brian S; Takahashi, Terry T

    2013-02-01

    Echoes and sounds of independent origin often obscure sounds of interest, but echoes can go undetected under natural listening conditions, a perception called the precedence effect. How does the auditory system distinguish between echoes and independent sources? To investigate, we presented two broadband noises to barn owls (Tyto alba) while varying the similarity of the sounds' envelopes. The carriers of the noises were identical except for a 2- or 3-ms delay. Their onsets and offsets were also synchronized. In owls, sound localization is guided by neural activity on a topographic map of auditory space. When there are two sources concomitantly emitting sounds with overlapping amplitude spectra, space map neurons discharge when the stimulus in their receptive field is louder than the one outside it and when the averaged amplitudes of both sounds are rising. A model incorporating these features calculated the strengths of the two sources' representations on the map (B. S. Nelson and T. T. Takahashi; Neuron 67: 643-655, 2010). The target localized by the owls could be predicted from the model's output. The model also explained why the echo is not localized at short delays: when envelopes are similar, peaks in the leading sound mask corresponding peaks in the echo, weakening the echo's space map representation. When the envelopes are dissimilar, there are few or no corresponding peaks, and the owl localizes whichever source is predicted by the model to be less masked. Thus the precedence effect in the owl is a by-product of a mechanism for representing multiple sound sources on its map.

  11. Analysis of continuous solvent extraction of nickel from spent electroless nickel plating baths by a mixer-settler.

    Science.gov (United States)

    Huang, Ying; Tanaka, Mikiya

    2009-05-30

    It is urgent to develop an effective technique to treat the large amount of spent electroless nickel plating bath and recycle the high concentration nickel. In our previous study, high recycling efficiency of nickel from the model spent bath was obtained by continuous solvent extraction with 2-hydroxy-5-nonylacetophenone oxime (LIX84I) as the extractant and 2-ethylhexylphosphonic acid mono-2-ethylhexyl ester (PC88A) as the accelerator using a mixer-settler extractor. It was observed that the extraction efficiency was affected by the operation parameters such as the flow rates of the aqueous and organic phases and the total stage number. In the present study, the effects of the operation parameters on the extraction efficiency were quantitatively studied on the basis of the pseudo-first-order interfacial extraction rate equation together with the hydrodynamic properties in the mixer. The organic phase holdup, measured under varying conditions of the flow rates of both phases, was analyzed by the Takahashi-Takeuchi holdup model in order to estimate the specific interfacial area. The overall extraction rate coefficients defined by the product of the interfacial extraction rate constant and the specific interfacial area were evaluated using the experimental data and ranged from 3.5 x 10(-3) to 6.7 x 10(-3)s(-1), which was close to the value of 3.4 x 10(-3)s(-1) obtained by batch extraction. Finally, an engineering simulation method was established for assessing the extraction efficiency of nickel during a multistage operation.

  12. Geometry and Width of the Ringwoodite - Bridgmanite+Ferropericlase Binary Loop in the System (Mg,Fe)2SiO4: Interpretation of the Sharpness of the 660-km Discontinuity

    Science.gov (United States)

    Katsura, T.; Ishii, T.; Huang, R.; Maeda, F.; Yuan, L.; Bhat, S.; Farla, R. J.; Kawazoe, T.; Tsujino, N.; Liu, Z.; Fei, H.; Wang, L.; Druzhbin, D.; Yamamoto, T.; Kulik, E.; Koemets, I.; Higo, Y.; Tange, Y.

    2017-12-01

    Short wave-length seismic reflections from the 660 km discontinuity (D660) indicated an extreme sharp, namely less than 2 km thick boundary. To explain this observation, Ito and Takahashi [1989] estimated that the pressure interval of the dissociation of ringwoodite (Rw) to bridgmanite (Brg) plus ferropericlase (fPc) is work to estimate the Rw-Brg-fPc pressure interval at 1700 K with uncertainty in the pressure estimation as low as 0.05 GPa. The majority of our efforts have been made to determine difference in transition pressure between Fo100 and Fo70 compositions. For this purpose, we prepared fine-grained mixtures of olivine (Ol), enstatite (En) and fPc with these two compositions and loaded in a MAP cell together with an MgO pressure marker and a WRe thermocouple. The cell was compressed to ca. 6 MN, heated to 1100 K to convert Ol and En to Rw and akimotoite (Ak), respectively, and further compressed until the sample pressure reached 22 24 GPa. Then, the sample was heated to 1700 K, and the temperature was maintained for 1-2 hours. Simultaneously, after several trials, the press load was increased at the right rate at the temperature to maintain nearly constant pressure within 0.2 GPa. X-ray diffractions of the samples and pressure maker were taken to determine pressure and phases present. An important finding is that the transition pressure in Fo70 is 0.1 GPa higher than that in Fo100. Namely, the hypothetical transition pressure in Fe2SiO4 is 0.3 GPa higher than the transition pressure in Mg2SiO4. This geometry is contrary to the previous understanding. The obtained pressure difference and the partition coefficients of Fe and Mg among Brg, Rw and fPc suggest that the pressure interval is almost zero, which explains the sharpness of the D660.

  13. Analysis of continuous solvent extraction of nickel from spent electroless nickel plating baths by a mixer-settler

    Energy Technology Data Exchange (ETDEWEB)

    Huang, Ying, E-mail: huang-ying@aist.go.jp [Metals Recycling Group, Research Institute for Environmental Management Technology, National Institute of Advanced Industrial Science and Technology (AIST), 16-1 Onogawa, Tsukuba, Ibaraki 305-8569 (Japan); Tanaka, Mikiya, E-mail: mky-tanaka@aist.go.jp [Metals Recycling Group, Research Institute for Environmental Management Technology, National Institute of Advanced Industrial Science and Technology (AIST), 16-1 Onogawa, Tsukuba, Ibaraki 305-8569 (Japan)

    2009-05-30

    It is urgent to develop an effective technique to treat the large amount of spent electroless nickel plating bath and recycle the high concentration nickel. In our previous study, high recycling efficiency of nickel from the model spent bath was obtained by continuous solvent extraction with 2-hydroxy-5-nonylacetophenone oxime (LIX84I) as the extractant and 2-ethylhexylphosphonic acid mono-2-ethylhexyl ester (PC88A) as the accelerator using a mixer-settler extractor. It was observed that the extraction efficiency was affected by the operation parameters such as the flow rates of the aqueous and organic phases and the total stage number. In the present study, the effects of the operation parameters on the extraction efficiency were quantitatively studied on the basis of the pseudo-first-order interfacial extraction rate equation together with the hydrodynamic properties in the mixer. The organic phase holdup, measured under varying conditions of the flow rates of both phases, was analyzed by the Takahashi-Takeuchi holdup model in order to estimate the specific interfacial area. The overall extraction rate coefficients defined by the product of the interfacial extraction rate constant and the specific interfacial area were evaluated using the experimental data and ranged from 3.5 x 10{sup -3} to 6.7 x 10{sup -3} s{sup -1}, which was close to the value of 3.4 x 10{sup -3} s{sup -1} obtained by batch extraction. Finally, an engineering simulation method was established for assessing the extraction efficiency of nickel during a multistage operation.

  14. Analysis of continuous solvent extraction of nickel from spent electroless nickel plating baths by a mixer-settler

    International Nuclear Information System (INIS)

    Huang, Ying; Tanaka, Mikiya

    2009-01-01

    It is urgent to develop an effective technique to treat the large amount of spent electroless nickel plating bath and recycle the high concentration nickel. In our previous study, high recycling efficiency of nickel from the model spent bath was obtained by continuous solvent extraction with 2-hydroxy-5-nonylacetophenone oxime (LIX84I) as the extractant and 2-ethylhexylphosphonic acid mono-2-ethylhexyl ester (PC88A) as the accelerator using a mixer-settler extractor. It was observed that the extraction efficiency was affected by the operation parameters such as the flow rates of the aqueous and organic phases and the total stage number. In the present study, the effects of the operation parameters on the extraction efficiency were quantitatively studied on the basis of the pseudo-first-order interfacial extraction rate equation together with the hydrodynamic properties in the mixer. The organic phase holdup, measured under varying conditions of the flow rates of both phases, was analyzed by the Takahashi-Takeuchi holdup model in order to estimate the specific interfacial area. The overall extraction rate coefficients defined by the product of the interfacial extraction rate constant and the specific interfacial area were evaluated using the experimental data and ranged from 3.5 x 10 -3 to 6.7 x 10 -3 s -1 , which was close to the value of 3.4 x 10 -3 s -1 obtained by batch extraction. Finally, an engineering simulation method was established for assessing the extraction efficiency of nickel during a multistage operation.

  15. Radiation Belt Transport Driven by Solar Wind Dynamic Pressure Fluctuations

    Science.gov (United States)

    Kress, B. T.; Hudson, M. K.; Ukhorskiy, A. Y.; Mueller, H.

    2012-12-01

    The creation of the Earth's outer zone radiation belts is attributed to earthward transport and adiabatic acceleration of electrons by drift-resonant interactions with electromagnetic fluctuations in the magnetosphere. Three types of radial transport driven by solar wind dynamic pressure fluctuations that have been identified are: (1) radial diffusion [Falthammer, 1965], (2) significant changes in the phase space density radial profile due to a single or few ULF drift-resonant interactions [Ukhorskiy et al., 2006; Degeling et al., 2008], and (3) shock associated injections of radiation belt electrons occurring in less than a drift period [Li et al., 1993]. A progress report will be given on work to fully characterize different forms of radial transport and their effect on the Earth's radiation belts. The work is being carried out by computing test-particle trajectories in electric and magnetic fields from a simple analytic ULF field model and from global MHD simulations of the magnetosphere. Degeling, A. W., L. G. Ozeke, R. Rankin, I. R. Mann, and K. Kabin (2008), Drift resonant generation of peaked relativistic electron distributions by Pc 5 ULF waves, textit{J. Geophys. Res., 113}, A02208, doi:10.1029/2007JA012411. Fälthammar, C.-G. (1965), Effects of Time-Dependent Electric Fields on Geomagnetically Trapped Radiation, J. Geophys. Res., 70(11), 2503-2516, doi:10.1029/JZ070i011p02503. Li, X., I. Roth, M. Temerin, J. R. Wygant, M. K. Hudson, and J. B. Blake (1993), Simulation of the prompt energization and transport of radiation belt particles during the March 24, 1991 SSC, textit{Geophys. Res. Lett., 20}(22), 2423-2426, doi:10.1029/93GL02701. Ukhorskiy, A. Y., B. J. Anderson, K. Takahashi, and N. A. Tsyganenko (2006), Impact of ULF oscillations in solar wind dynamic pressure on the outer radiation belt electrons, textit{Geophys. Res. Lett., 33}(6), L06111, doi:10.1029/2005GL024380.

  16. Preventive effects of a phospholipid polymer coating on PMMA on biofilm formation by oral streptococci

    Science.gov (United States)

    Shibata, Yukie; Yamashita, Yoshihisa; Tsuru, Kanji; Ishihara, Kazuhiko; Fukazawa, Kyoko; Ishikawa, Kunio

    2016-12-01

    The regulation of biofilm formation on dental materials such as denture bases is key to oral health. Recently, a biocompatible phospholipid polymer, poly(2-methacryloyloxyethyl phosphorylcholine-co-n-butyl methacrylate) (PMB) coating, was reported to inhibit sucrose-dependent biofilm formation by Streptococcus mutans, a cariogenic bacterium, on the surface of poly(methyl methacrylate) (PMMA) denture bases. However, S. mutans is a minor component of the oral microbiome and does not play an important role in biofilm formation in the absence of sucrose. Other, more predominant oral streptococci must play an indispensable role in sucrose-independent biofilm formation. In the present study, the effect of PMB coating on PMMA was evaluated using various oral streptococci that are known to be initial colonizers during biofilm formation on tooth surfaces. PMB coating on PMMA drastically reduced sucrose-dependent tight biofilm formation by two cariogenic bacteria (S. mutans and Streptococcus sobrinus), among seven tested oral streptococci, as described previously [N. Takahashi, F. Iwasa, Y. Inoue, H. Morisaki, K. Ishihara, K. Baba, J. Prosthet. Dent. 112 (2014) 194-203]. Streptococci other than S. mutans and S. sobrinus did not exhibit tight biofilm formation even in the presence of sucrose. On the other hand, all seven species of oral streptococci exhibited distinctly reduced glucose-dependent soft biofilm retention on PMB-coated PMMA. We conclude that PMB coating on PMMA surfaces inhibits biofilm attachment by initial colonizer oral streptococci, even in the absence of sucrose, indicating that PMB coating may help maintain clean conditions on PMMA surfaces in the oral cavity.

  17. The SOFeX Group

    Science.gov (United States)

    Coale, K. H.

    2002-12-01

    The SOFeX Group is comprised of the following institutions and individuals, all of whose participation resulted in a successful experiment. Moss Landing Marine Laboratories: K. Coale, C. Hunter, M. Gordon, S. Tanner, W. Wang, N. Ladizinsky, D. Cooper, G. Smith, J. Brewster; Monterey Bay Aquarium Research Institute: K. Johnson, F. Chavez, S. Fitzwater, P. Strutton, G. Elrod, Z. Chase, E. Drake, J. Plant; Oregon State University: B. Hales, J. Barth, L.Bandstra, P. Covert, D. Hubbard, J. Jennings, S. Pierce, E. Scholz; Lamont Doherty Earth Observatory: T. Takahashi; Duke University: R. Barber, V. Lance, D. Stube, A. Hilting, M. Hiscock, A. Apprill, C. Van Hilst, ; Virginia Institute of Marine Science: W. Smith, H. Ducklow, L. Delizo, J. Oliver, E. Bailey, J. Peloquin, R. Daniels, J. Bauer; University Of Hawaii: M. Landry, R. Bidigare, S. Brown, N. Cassar, B. Twining, K. Selph, C. Sheridan; NOAA Atlantic Oceanographic and Meteorological Laboratory: R. Wanninkhof, K. Sullivan, C. Neill; University of Miami: F. Millero, X. Zhu, W. Hiscock, V. Koehler, A. Cabrera; University of Calif. Lawrence Berkeley National Laboratory: J. Bishop, T. Wood, C. Guay, P. Lam; Rutgers University: P. Falkowski, Z. Kolber, R. Nicolayson, S. Tozzi, M. Gorbunov, M. Koblizek; University of Massachusets: M. Altabet, M. McIlvan, D. Timothy; New Mexico Tech.: Oliver Wingenter; San Francisco State Univ. - Romberg Tiburon Center: W. Cochlan, J. Herndon; University of Calif. Santa Cruz: R. Kudela, A. Roberts; Univ. of Calif. Santa Barbara: M. Brezinski, J. Jones, M. Demarest; Massachusets Inst. of Technology: S. Chisolm, Z. Johnson; Woods Hole Oceanographic Institute: K. Buesseler, J. Andrews, G. Crossin, S. Pike, J. Tegeder, C. Herbold, K. Mahoney, M.Coggeshell ; University of East Anglia: L. Houghton, L. Goldson, A. Watson, J. Ledwell; Institute of Marine Research, Kiel: Peter Croot; University of Otago: R. Frew, E. Abraham, P. Boyd.

  18. Modified spin-wave theory with ordering vector optimization: frustrated bosons on the spatially anisotropic triangular lattice

    Energy Technology Data Exchange (ETDEWEB)

    Hauke, Philipp [ICFO-Institut de Ciencies Fotoniques, Meditarranean Technology Park, E-08860 Castelldefels, Barcelona (Spain); Roscilde, Tommaso [Laboratoire de Physique, Ecole Normale Superieure de Lyon, 46 Allee d' Italie, F-69007 Lyon (France); Murg, Valentin; Ignacio Cirac, J; Schmied, Roman, E-mail: Philipp.Hauke@icfo.e [Max-Planck-Institut fuer Quantenoptik, Hans-Kopfermann-Strasse 1, D-85748 Garching (Germany)

    2010-05-15

    We investigate a system of frustrated hardcore bosons, modeled by an XY antiferromagnet on the spatially anisotropic triangular lattice, using Takahashi's modified spin-wave (MSW) theory. In particular, we implement ordering vector optimization on the ordered reference state of MSW theory, which leads to significant improvement of the theory and accounts for quantum corrections to the classically ordered state. The MSW results at zero temperature compare favorably to exact diagonalization (ED) and projected entangled-pair state (PEPS) calculations. The resulting zero-temperature phase diagram includes a one-dimensional (1D) quasi-ordered phase, a 2D Neel ordered phase and a 2D spiraling ordered phase. Strong indications coming from the ED and PEPS calculations, as well as from the breakdown of MSW theory, suggest that the various ordered or quasi-ordered phases are separated by spin-liquid phases with short-range correlations, in analogy to what has been predicted for the Heisenberg model on the same lattice. Within MSW theory, we also explore the finite-temperature phase diagram. In agreement with the Berezinskii-Kosterlitz-Thouless (BKT) theory, we find that zero-temperature long-range-ordered phases turn into quasi-ordered phases (up to a BKT transition temperature), while zero-temperature quasi-ordered phases become short-range correlated at finite temperature. These results show that, despite its simplicity, MSW theory is very well suited to describing ordered and quasi-ordered phases of frustrated XY spins (or, equivalently, of frustrated lattice bosons) both at zero and finite temperatures. While MSW theory, just as other theoretical methods, cannot describe spin-liquid phases, its breakdown provides a fast and reliable method for singling out Hamiltonians that may feature these intriguing quantum phases. We thus suggest a tool for guiding our search for interesting systems whose properties are necessarily studied with a physical quantum simulator

  19. Shape-retainment control using an antagonistic shape memory alloy system

    Science.gov (United States)

    Ikeda, T.; Sawamura, K.; Senba, A.; Tamayama, M.

    2015-04-01

    Since shape memory alloy (SMA) actuators can generate large force per unit weight, they are expected as one of the next generation actuators for aircraft. To keep a position of conventional control surfaces or morphing wings with SMA actuators, the SMA actuators must keep being heated, and the heating energy is not small. To save the energy, a new control method proposed for piezoelectric actuators utilizing hysteresis in deformation [Ikeda and Takahashi, Proc. SPIE 8689 (2013), 86890C] is applied to an antagonistic SMA system. By using the control method any position can be an equilibrium point within hysteresis of stress-strain diagrams. To confirm a feasibility of the control method, a fundamental experiment is performed. The SMA wires are heated by applying electric current to the wires. When a pulsed current is applied to the two SMA wires alternately, the equilibrium position changes between two positions alternately, and when a series of pulse whose amplitude increases gradually is applied to one SMA wire, the equilibrium position changes like a staircase. However, just after the pulse the position returns slightly, that is, overshoot takes place. To investigate such a behavior of the system, numerical simulation is also performed. The one-dimensional phase transformation model [Ikeda, Proc. SPIE 5757 (2005), 344-352] is used for a constitutive model of the SMA wires. The simulated result agrees with the experiment qualitatively, including the overshoot. By examining volume fraction of each phase, it is found that the overshoot is caused by that austenite phase transforms into stress-induced martensite phase during the cooling process after the pulse.

  20. PREFACE Preface

    Science.gov (United States)

    Takahashi, Migaku; Saito, Hitoshi; Yoshimura, Satoru; Takanashi, Koki; Sahashi, Masashi; Tsunoda, Masakiyo

    2011-01-01

    The 2nd International Symposium on Advanced Magnetic Materials and Applications 2010 (ISAMMA 2010) was held in Sendai, Japan, from 12-16, July 2010. ISAMMA is the first consolidated symposium of three independent symposia held in the Asian region: ISPMM (International Symposium on Physics of Magnetic Materials) of Japan which was first held in 1987 in Sendai, and was subsequently held five times, Beijing (1992), Seoul (1995), Sendai (1998), Taipei (2001), and Singapore (2005); ISAMT (International Symposium of Advanced Magnetic Technology) of Taiwan, and SOMMA (International Symposium on Magnetic Materials and Applications) of Korea, both of which were started in 1999, and were held five times up to 2005. ISAMMA was established as a new international symposium which will be held every 3 years in Asia. The concept of this unified international symposium was mainly developed by Prof. M. Takahashi, Conference Chair of this conference, ISAMMA 2010. The first memorial symposium, ISAMMA 2007, was held on Jeju Island, Korea, from 28 May to 1 June 2007. The main purpose and scope of the ISAMMA conferences are to provide an opportunity for scientists and engineers from all over the world to meet in Asia to discuss recent advances in the study of magnetic materials and their physics, and spin related phenomena and materials. Conference photograph The categories of ISAMMA 2010 were: Fundamental Properties of Magnetic Materials; Hard/Soft Magnetic Materials and Applications; Spintronics Materials and Devices; Structured Materials; Multi Functional Magnetic Materials; Spin Dynamics and Micromagnetics; Magnetic Storage; Materials for Applications (Sensors, High Frequency, Power, and Bio/Medical devices); Magnetic Imaging and Characterization. The scientific program commenced on Tuesday 13 July 2010 with opening remarks by the Symposium Chairman and the plenary talks were presented by T Rasing, P Fischer, H Yoda and S Sugimoto. The conference was attended by 511 participants from

  1. Linkages between ocean circulation, heat uptake and transient warming: a sensitivity study

    Science.gov (United States)

    Pfister, Patrik; Stocker, Thomas

    2016-04-01

    . Lett., 41, 7306-7313 Rose, B. E. J., K. C. Armour, D. S. Battisti, N. Feldl, and D. D. B. Koll (2014), The dependence of transient climate sensitivity and radiative feedbacks on the spatial pattern of ocean heat uptake, Geophys. Res. Lett., 41, 1071-1078 Winton M., K. Takahashi and I. M. Held (2010), Importance of ocean heat uptake efficacy to transient climate change, J. Clim., 23, 2333-44 Winton, M., S. M. Griffies, B. Samuels, J. L. Sarmiento and T. L. Frölicher (2013) Connecting changing ocean circulation with changing climate, J. Clim., 26, 2268-78

  2. Safety comparison of additives in antiglaucoma prostaglandin (PG analog ophthalmic formulations

    Directory of Open Access Journals (Sweden)

    Fukuda M

    2013-03-01

    Full Text Available Masamichi Fukuda, Shinsuke Shibata, Naoko Shibata, Kenta Hagihara, Hiromoto Yaguchi, Hiromi Osada, Nobuo Takahashi, Eri Kubo, Hiroshi SasakiDepartment of Ophthalmology, Kanazawa Medical University, Uchinada, JapanPurpose: To investigate the safety of five types of antiglaucoma prostaglandin analog ophthalmic formulations, and to clarify their differences in accordance with contained additives (preservatives and surface-active agents.Methods: The following five types of ophthalmic solutions and three types of additives were investigated: latanoprost (Xalatan®; latanoprost, tafluprost (Tapros®; tafluprost, bimatoprost (Lumigan®; bimatoprost, travoprost (Travatan®; travoprost, travoprost (Travatan Z®; travoprost-Z, benzalkonium chloride (BAK, polyoxyethylene hardening castor oil 40 (HCO-40, and polysorbate 80 (P-80. These experimental solutions were exposed to the cultured cells of a rabbit-derived corneal cell line for a certain time, and the exposure time causing 50% cell damage (CD50, indicated by the ratio of viable cells to total cells was calculated (in vitro. In addition, corneal resistance (CR was measured and CR ratio (post-treatment CR/pretreatment CR × 100 was calculated (in vivo.Results: CD50 of each ophthalmic solution was the longest with tafluprost, followed by travoprost-Z, bimatoprost, travoprost, and latanoprost. CD50 of 0.005%, 0.01%, and 0.02% BAK was 14.5 minutes, 8.1 minutes, and 4.0 minutes, respectively. The number of viable cells decreased to 60%, 8 minutes after exposure with HCO-40, and 30 minutes after being exposed to P-80. The CR ratio was 81.0% with travoprost and 82.0% with latanoprost, indicating a significant posttreatment reduction of CR (P < 0.05. The CR ratio did not decrease after treatment with tafluprost, travoprost-Z, or bimatoprost. The CR ratio of 0.005%, 0.01%, and 0.02% BAK was 105.0%, 90.5%, and 68.7%, respectively, and that of HCO-40 and P-80 was 108.7% and 114.2%, respectively.Conclusion: BAK

  3. Indications and postoperative treatment for Ex-PRESS® insertion in Japanese patients with glaucoma: comparison with standard trabeculectomy

    Directory of Open Access Journals (Sweden)

    Kato N

    2015-08-01

    Full Text Available Noriko Kato,1,2 Genichiro Takahashi,1,2 Koichi Kumegawa,1,2 Yoshiaki Kabata,1,2 Hiroshi Tsuneoka1 1Department of Ophthalmology, Jikei University, School of Medicine, 2Katsushika Medical Center, Tokyo, Japan Background: We investigated indications and early postoperative treatment for Ex-PRESS® insertion for glaucoma by comparing postoperative outcomes with those for standard trabeculectomy. Methods: Ex-PRESS insertion was performed in 21 eyes and standard trabeculectomy (TLE in 22 eyes. Mean intraocular pressure (IOP in the 6 months after surgery, success rate for postoperative IOP decline, postoperative complications, postoperative treatment, filtering blebs, and indications were then retrospectively investigated. Results: Mean postoperative IOP did not differ significantly between the groups at any observation time for 6 months after surgery. Further, it did not differ between either the groups of patients with primary open-angle glaucoma (POAG and neovascular glaucoma (NTG, or the patients with primary open-angle glaucoma and NTG in the Ex-PRESS group. Comparison of success rates in reduction of postoperative IOP between the groups under the following four survival conditions showed no significant differences: postoperative IOP <30% of the preoperative IOP, complete success (no additional ophthalmic solution, and qualified success (ophthalmic solution required; 5 mmHg ≤ postoperative IOP ≤21 mmHg, complete success (no additional ophthalmic solution, and qualified success (ophthalmic solution required. With regard to postoperative complications and postoperative treatment, the incidence of hyphema was significantly lower in the Ex-PRESS group, but no other significant intergroup differences were seen. The height of the filtering bleb was lower in the Ex-PRESS group. Conclusion: Postoperative outcomes in the Ex-PRESS and TLE groups were comparable. The incidence of hyphema was significantly lower in the Ex-PRESS group. Ex-PRESS insertion

  4. Annually-resolved temperature reconstructions of the past 2000 years from Dome-Fuji, East Antarctica

    Science.gov (United States)

    Motizuki, Yuko; Takahashi, Kazuya; Nakai, Yoichi; Motoyama, Hideaki

    2016-04-01

    We present annually-resolved temperature and SST reconstructions of the past 2000 years based on water (oxygen and deuterium) isotope measurement on a shallow ice core drilled in 2010 at Dome Fuji station, East Antarctica. These time series records will be an essential contribution to the PAGES 2k project from sparse data area in Antarctica. Dome Fuji station is located on a summit of Dronning Maud Land at an altitude of 3810 m a.s.l. (above sea level) (77o19'01'' S, 39o42'12'' E) in East Antarctica. The 10 m depth mean snow temperature at Dome Fuji is -57.3oC1). The inland area around Dome Fuji has been recognized to be especially unique: The snow and ice there contain much stratospheric information. The direct evidence for this comes from tritium contents originated from the nuclear bomb tests in the 1960s; the tritium fallout at the Dome Fuji site is outstandingly high among 16 snow pit samples widely collected over Antarctica2). To date the concerned Dome Fuji ice core, we applied volcanic signature matching to transfer the West Antarctic Ice Sheet (WAIS) Divide ice core chronology constructed by annual layer counting as used in the study by Sigl et al. (2014)3). In our presentation, we confine ourselves to discuss the oscillation periodicity that we observed in the oxygen isotope record in our data: The periods of approximately 10, 20, and 200 years were found. We will present the time series analyses for this in detail, and will discuss the origin of this periodicity. References: 1) Kameda, T., Motoyama, H., Fujita, S., and Takahashi, S.: "Past temporal and spatial variability of surface mass balance at Dome Fuji", East Antarctica, by the stake method from 1995 to 2006, J. Glaciol., 54, 107-116, 2008. 2) Fourre, E., Jean-Baptiste, P., Dapoigny, A., Baumier, D., Petit, J.-R., and Jouzel, J.: "Past and recent tritium levels in Arctic and Antarctic polar caps", Earth Planet. Sc. Lett., 245, 56-64, 2006. 3) Sigl, M., J. McConnell, M. Toohey, M. Curran, S. Das, R

  5. Teeth and physical fitness in a community-dwelling 40 to 79-year-old Japanese population

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    Inui A

    2016-06-01

    Full Text Available Akinari Inui,1 Ippei Takahashi,2 Kaori Sawada,2 Akimoto Naoki,2 Toshirou Oyama,1 Yoshihiro Tamura,1 Toshiyuki Osanai,1 Anna Satake,1 Shigeyuki Nakaji,2 Wataru Kobayashi1 1Department of Oral and Maxillofacial Surgery, Hirosaki University Graduate School of Medicine, 2Department of Social Medicine, Hirosaki University Graduate School of Medicine, Hirosaki City, Aomori Prefecture, Japan Purpose: Decline in the number of teeth and physical fitness begins from 40 years of age; however, several epidemiological studies have identified relationships between oral conditions and physical performance parameters in community-dwelling elderly population. The aim of this study was to validate the relationship between the muscle mass and its function and oral conditions (number of teeth and dental occlusion after 40 years of age in a community-dwelling population in Japan.Materials and methods: The subjects comprised of 552 volunteers (198 males and 354 females, 40–79 years who participated in the Iwaki Health Promotion Project in 2013. Multiple linear regression analyses were performed with the measures of the muscle mass and its function as objective variables and the measures of the number of teeth, age, body mass index, medical history, serum albumin concentration, smoking status, habitual alcohol intake, marital status, education levels, and exercising habits as explanatory variables. The relationships between the Eichner index and the muscle mass and its function were analyzed using analysis of covariance, with adjustment for confounding factors.Results: After adjusting for confounding factors, the number of teeth was shown to be an independent risk factor for the timed 10 m walk test (in females and the skeletal muscle mass of the whole body (in males. The results also revealed that the timed 10 m walk test was significantly correlated with the Eichner index (Classes A and C in females were correlated.Conclusion: This cross-sectional study on a

  6. On the transition of short cracks into long fatigue cracks in reactor pressure vessel steels

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    Singh Rajwinder

    2018-01-01

    Full Text Available Short fatigue cracks, having dimension less than 1 mm, propagate at much faster rates (da/dN even at lower stress intensity factor range (da/dN as compared to the threshold stress intensity factor range obtained from long fatigue crack growth studies. These short cracks originate at the sub-grain level and some of them ultimately transit into critical long cracks over time. Therefore, designing the components subjected to fatigue loading merely on the long crack growth data and neglecting the short crack growth behavior can overestimate the component’s life. This aspect of short fatigue cracks become even more critical for materials used for safety critical applications such as reactor pressure vessel (RPV steel in nuclear plants. In this work, the transition behaviour of short fatigue crack gowth into long fatigue crack is studied in SA508 Grade 3 Class I low alloy steel used in RPVs. In-situ characterization of initiation, propagation and transition of short fatigue cracks is performed using fatigue stage for Scanning Electron Microscope (SEM in addition to digital microscopes fitted over a servo-hydraulic fatigue machine and correlated with the microtructural information obtained using electron backscatter diffraction (EBSD. SA508 steel having an upper bainitic microstructure have several microstructural interfaces such as phase and grain boundaries that play a significant role in controlling the short fatigue crack propagation. Specially designed and prepared short fatigue specimens (eletro-polished with varying initial crack lengths of the order of tens of microns are used in this study. The transition of such short initial cracks into long cracks is then tracked to give detailed insight into the role of each phase and phase/grain boundary with an objective of establishing Kitagawa-Takahashi diagram for the given RPV steel. The behavior of the transited long cracks is then compared with the crack propagation behavior obtained using

  7. Association between vitamin D and pressure ulcers in older ambulatory adults: results of a matched case–control study

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    Kalava UR

    2011-08-01

    Full Text Available Usha R Kalava1, Stephen S Cha2, Paul Y Takahashi1,31Department of Internal Medicine, Division of Primary Care Internal Medicine, 2Department of Biostatistics, 3Kogod Center of Aging, Mayo Clinic, Rochester, MN, USABackground: Pressure ulcers are common among older adults, but knowledge about nutritional risk factors is still developing. Vitamin D deficiency is common in the elderly population and is required for normal skin proliferation. The role of vitamin D in pressure ulceration and wound healing is not known. The purpose of this case–control study was to determine the association between vitamin D levels and pressure ulceration in an older community-dwelling cohort.Methods: All cases and controls were community-dwelling elderly older than 60 years in a primary care panel in Olmsted County, MN. Pressure ulcer cases were defined clinically. The controls were age-matched and gender-matched to controls without pressure ulceration. The main exposure variable was 25-hydroxyvitamin D levels in both groups. The other exposure variable was the Charlson Comorbidity Index used to measure medical comorbidity. The analysis included univariate and conditional logistic regression for 25-hydroxyvitamin D levels.Results: The average (standard deviation age of the study participants with a pressure ulcer was 80.46 years (±8.67, and the average vitamin D level was 30.92 ng/mL (±12.46. In univariate analysis, Vitamin D deficiency (levels < 25 ng/mL was associated with pressure ulcers (odds ratio: 1.871, P = 0.0154. Comorbidities of the subjects calculated using the Charlson Comorbidity Index were also associated with pressure ulcers (odds ratio: 1.136, P < 0.001. In the final conditional logistical regression model, the association of Vitamin D and pressure ulcers became nonsignificant after adjustment for comorbid illness.Conclusion: Medical comorbidities increased the risk of pressure ulceration. Vitamin D deficiency was not an independent risk factor

  8. Vitamin D and depression in geriatric primary care patients

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    Lapid MI

    2013-05-01

    Full Text Available Maria I Lapid,1 Stephen S Cha,2 Paul Y Takahashi31Division of Outpatient Consultation, Department of Psychiatry and Psychology, 2Division of Biomedical Statistics and Informatics, Department of Health Sciences Research, 3Division of Primary Care Internal Medicine, Department of Medicine, Mayo Clinic, Rochester, Minnesota, USAPurpose: Vitamin D deficiency is common in the elderly. Vitamin D deficiency may affect the mood of people who are deficient. We investigated vitamin D status in older primary care patients and explored associations with depression.Patients and methods: A cross-sectional study was conducted and association analyses were performed. Primary care patients at a single academic medical center who were ≥60 years with serum total 25-hydroxyvitamin D (25[OH]D levels were included in the analysis. The primary outcome was a diagnosis of depression. Frailty scores and medical comorbidity burden scores were collected as predictors.Results: There were 1618 patients with a mean age of 73.8 years (±8.48. The majority (81% had optimal (≥25 ng/mL 25(OHD range, but 17% met mild-moderate (10–24 ng/mL and 3% met severe (<10 ng/mL deficiencies. Those with severe deficiency were older (P < 0.001, more frail (P < 0.001, had higher medical comorbidity burden (P < 0.001, and more frequent depression (P = 0.013. The 694 (43% with depression had a lower 25(OHD than the nondepressed group (32.7 vs 35.0, P = 0.002. 25(OHD was negatively correlated with age (r = −0.070, P = 0.005, frailty (r = −0.113, P < 0.001, and medical comorbidity burden (r = −0.101, P < 0.001. A 25(OHD level was correlated with depression (odds ratio = 0.990 and 95% confidence interval [CI] = 0.983–0.998, P = 0.012. Those with severe vitamin D deficiency were twice as likely to have depression (odds ratio = 2.093 with 95% CI 1.092–4.011, P = 0.026.Conclusion: Vitamin D deficiency was present in a fifth of this older primary care population. Lower vitamin D levels

  9. Visual acuity loss associated with excessive “dry macula” in exudative age-related macular degeneration

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    Takahashi H

    2018-02-01

    Full Text Available Hidenori Takahashi,1–3 Yuji Inoue,1,2 Xue Tan,2,3 Satoru Inoda,1 Shinichi Sakamoto,1 Yusuke Arai,1 Yasuo Yanagi,4–6 Yujiro Fujino,2,3 Hidetoshi Kawashima1 1Department of Ophthalmology, Jichi Medical University, Shimotsuke, 2Department of Ophthalmology, The University of Tokyo, Bunkyo, 3Department of Ophthalmology, Japan Community Health Care Organization Tokyo Shinjuku Medical Center, Shinjuku, Japan; 4Medical Retina, Singapore National Eye Centre, 5Medical Retina, Singapore Eye Research Institute, 6Eye-ACP, Duke NUS Medical School, National University of Singapore, Singapore Purpose: To investigate the correlation between visual acuity and central macular thickness (CMT and choroidal thickness (CCT in patients with wet age-related macular degeneration (AMD. Methods: In this retrospective analysis, 14 eyes that received >10 ranibizumab injections (based on pro re nata [PRN] regimen and maintained initial visual acuity gain were analyzed. The following 5 parameters were measured at the foveal center: CMT (distance from the inner limiting membrane [ILM] to Bruch’s membrane; central retinal thickness (CRT; distance from the ILM to the inner limit of the retinal pigment epithelium or subretinal fluid [SRF]; SRF thickness (SRFT; pigment epithelium detachment thickness (PEDT; and CCT. The correlation between the logarithm of the minimum angle of resolution (logMAR best-corrected visual acuity (BCVA and the 5 parameters was examined with generalized estimating equations. Results: CMT, CRT, and CCT were negatively correlated with logMAR BCVA (P=0.031, 0.023, and 0.036, respectively when only CMT values less than the thickness that maximized visual acuity for each eye were used for the analysis. Each 100-µm reduction in CMT, CRT, or CCT improved logMAR BCVA by -0.1, -0.08, or -0.07, respectively. SRFT and PEDT were not correlated with BCVA. The median CMT that maximized the visual acuity was 230 µm. Conclusion: Dry macula with CMT <230 µm was

  10. PREFACE: Preface

    Science.gov (United States)

    Takahashi, Masahiko; Ueda, Kiyoshi

    2011-03-01

    the conference. Finally, the chairs would like to express their thanks to all the participants for contributing to lively and fruitful discussions throughout the conference. Masahiko Takahashi and Kiyoshi Ueda International Advisory Board Lorenzo Avaldi (Italy)Klaus Bartschat (USA) Azzedine Lahmam-Bennani (France)Jamal Berakdar (Germany) Nora Berrah (USA)Igor Bray (Australia) XiangJun Chen (China)Claude Dal Cappello (France) Reinhard Dörner (Germany)Alexander Dorn (Germany) Danielle Dowek (France)Alexey Grum-Grzhimailo (Russia) Noriyuki Kouchi (Japan)Birgit Lohmann (Australia) Don Madison (USA)Fernando Martin (Spain) Andrew Murray (England)Bernard Piraux (Belgium) Roberto Rivarola (Argentina)Emma Sokell (Ireland) Giovanni Stefani (Italy) Conference photograph

  11. Coulomb stress change of crustal faults in Japan for 21 years, estimated from GNSS displacement

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    Nishimura, T.

    2017-12-01

    Coulomb stress is one of the simplest index to show how the fault is close to a brittle failure (e.g., earthquake). Many previous studies used the Coulomb stress change (ΔCFS) to evaluate whether the fault approaches failure and successfully explained an earthquake triggered by previous earthquakes and volcanic sources. Most studies use a model of a half-space medium with given rheological properties, boundary conditions, dislocation, etc. to calculate ΔCFS. However, Ueda and Takahashi (2005) proposed to calculate DCFS directly from surface displacement observed by GNSS. There are 6 independent components of stress tensor in an isotropic elastic medium. On the surface of the half-space medium, 3 components should be zero because of no traction on the surface. This means the stress change on the surface is calculated from the surface strain change using Hooke's law. Although an earthquake does not occur on surface, the stress change on the surface may approximate that at a depth of a shallow crustal earthquake (e.g., 10 km) if the source is far from the point at which we calculate the stress change. We tested it by comparing ΔCFS from the surface displacement and that from elastic fault models for past earthquakes. We first estimate a strain change with a method of Shen et al.(1996 JGR) from surface displacement and then calculate ΔCFS for a targeted focal mechanism. Although ΔCFS in the vicinity of the source fault cannot be reproduced from the surface displacement, surface displacement gives a good approximation of ΔCFS in a region 50 km away from the source if the target mechanism is a vertical strike-slip fault. It suggests that GNSS observation can give useful information on a recent change of earthquake potential. We, therefore, calculate the temporal evolution of ΔCFS on active faults in southwest Japan from April 1996 using surface displacement at GNSS stations. We used parameters for the active faults used for evaluation of strong motion by the

  12. Nature of the Charged-Group Effect on the Stability of the C-Peptide Helix

    Science.gov (United States)

    Shoemaker, Kevin R.; Kim, Peter S.; Brems, David N.; Marqusee, Susan; York, Eunice J.; Chaiken, Irwin M.; Stewart, John M.; Baldwin, Robert L.

    1985-04-01

    The residues responsible for the pH-dependent stability of the helix formed by the isolated C-peptide (residues 1-13 of ribonuclease A) have been identified by chemical synthesis of analogues and measurement of their helix-forming properties. Each of the residues ionizing between pH 2 and pH 8 has been replaced separately by an uncharged residue. Protonation of Glu-2- is responsible for the sharp decrease in helix stability between pH 5 and pH 2, and deprotonation of His-12+ causes a similar decrease between pH 5 and pH 8. Glu-9- is not needed for helix stability. The results cannot be explained by the Zimm-Bragg model and host-guest data for α -helix formation, which predict that the stability of the C-peptide helix should increase when Glu-2- is protonated or when His-12+ is deprotonated. Moreover, histidine+ is a strong helix-breaker in host-guest studies. In proteins, acidic and basic residues tend to occur at opposite ends of α -helices: acidic residues occur preferentially near the NH2-terminal end and basic residues near the COOH-terminal end. A possible explanation, based on a helix dipole model, has been given [Blagdon, D. E. & Goodman, M. (1975) Biopolymers 14, 241-245]. Our results are consistent with the helix dipole model and they support the suggestion that the distribution of charged residues in protein helices reflects the helix-stabilizing propensity of those residues. Because Glu-9 is not needed for helix stability, a possible Glu-9-\\cdots His-12+ salt bridge does not contribute significantly to helix stability. The role of a possible Glu-2-\\cdots Arg-10+ salt bridge has not yet been evaluated. A charged-group effect on α -helix stability in water has also been observed in a different peptide system [Ihara, S., Ooi, T. & Takahashi, S. (1982) Biopolymers 21, 131-145]: block copolymers containing (Ala)20 and (Glu)20 show partial helix formation at low temperatures, pH 7.5, where the glutamic acid residues are ionized. (Glu)20(Ala)20Phe forms a

  13. Antifungal, optical, and mechanical properties of polymethylmethacrylate material incorporated with silanized zinc oxide nanoparticles

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    Kamonkhantikul K

    2017-03-01

    Full Text Available Krid Kamonkhantikul,1 Mansuang Arksornnukit,1 Hidekazu Takahashi2 1Department of Prosthodontics, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand; 2Oral Biomaterials Engineering, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan Background: Fungal infected denture, which is typically composed of polymethylmethacrylate (PMMA, is a common problem for a denture wearer, especially an elderly patient with limited manual dexterity. Therefore, increasing the antifungal effect of denture by incorporating surface modification nanoparticles into the PMMA, while retaining its mechanical properties, is of interest. Aim of the study: This study aimed to evaluate antifungal, optical, and mechanical properties of heat-cured PMMA incorporated with different amounts of zinc oxide nanoparticles (ZnOnps with or without methacryloxypropyltrimethoxysilane modification. Materials and methods: Specimens made from heat-cured PMMA containing 1.25, 2.5, and 5% (w/w nonsilanized (Nosi or silanized (Si ZnOnps were evaluated. Specimens without filler served as control. The fungal assay was performed placing a Candida albicans suspension on the PMMA surface for 2 h, then Sabouraud Dextrose Broth was added, and growth after 24 h was determined by counting colony forming units on agar plates. A spectrophotometer was used to measure the color in L* (brightness, a* (red-green, b* (yellow-blue and opacity of the experimental groups. Flexural strength and flexural modulus were determined using a three-point bending test on universal testing machine after 37°C water storage for 48 h and 1 month. Results: The antifungal, optical, and mechanical properties of the PMMA incorporated with ZnOnps changed depending on the amount. With the same amount of ZnOnps, the silanized groups demonstrated a greater reduction in C. albicans compared with the Nosi groups. The color difference (ΔE and opacity of the Nosi groups were

  14. Oral conditions and dysphagia in Japanese, community-dwelling middle- and older- aged adults, independent in daily living

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    Inui A

    2017-03-01

    Full Text Available Akinari Inui,1 Ippei Takahashi,2 Sizuka Kurauchi,2 Yuki Soma,2 Toshiaki Oyama,1 Yoshihiro Tamura,1 Takao Noguchi,1 Kouichi Murashita,3 Shigeyuki Nakaji,2 Wataru Kobayashi1 1Department of Oral and Maxillofacial Surgery, 2Department of Social Medicine, 3COI Research Initiatives Organization, Hirosaki University Graduate School of Medicine, Hirosaki, Aomori Prefecture, Japan Purpose: Prevention, early detection and effective rehabilitation of dysphagia are important issues to be considered in an aging society. Previous studies have shown conflicting findings regarding the association between dysphagia and its potential risk factors, including age, malnutrition, oral conditions, lifestyle and medical history. Herein, we assessed the prevalence and association of dysphagia with potential risk factors in 50- to 79-year-old adults dwelling in a community in Japan. Patients and methods: In this study, there were 532 participants (185 males and 347 females. Participants who responded positively to the question “Do you sometimes choke on drinks/food such as tea and soup?” or those who presented with abnormal repetitive saliva swallowing test findings were diagnosed with dysphagia. The data collected from these participants included the following: number of teeth, occurrence of oral dryness, age, body mass index, serum albumin concentration, smoking, drinking and exercise habits, presence of diseases, such as diabetes mellitus and hypertension, and questions from the Mini–Mental State Examination. Results: Dysphagia was observed in 33 males (17.8% and 76 females (21.9%. To explore the effect of the potential risk factors on the prevalence of dysphagia, a model was built by multivariate logistic regression analysis. Using the forced entry method, oral dryness (odds ratio [OR] =3.683 and P=0.003 in males; OR =1.797 and P=0.032 in females and the number of teeth (OR =0.946 and P=0.038 in males were found to be significantly related to dysphagia

  15. Uncertainty in the global oceanic CO2 uptake induced by wind forcing: quantification and spatial analysis

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    A. Roobaert

    2018-03-01

    Full Text Available The calculation of the air–water CO2 exchange (FCO2 in the ocean not only depends on the gradient in CO2 partial pressure at the air–water interface but also on the parameterization of the gas exchange transfer velocity (k and the choice of wind product. Here, we present regional and global-scale quantifications of the uncertainty in FCO2 induced by several widely used k formulations and four wind speed data products (CCMP, ERA, NCEP1 and NCEP2. The analysis is performed at a 1°  ×  1° resolution using the sea surface pCO2 climatology generated by Landschützer et al. (2015a for the 1991–2011 period, while the regional assessment relies on the segmentation proposed by the Regional Carbon Cycle Assessment and Processes (RECCAP project. First, we use k formulations derived from the global 14C inventory relying on a quadratic relationship between k and wind speed (k = c ⋅ U102; Sweeney et al., 2007; Takahashi et al., 2009; Wanninkhof, 2014, where c is a calibration coefficient and U10 is the wind speed measured 10 m above the surface. Our results show that the range of global FCO2, calculated with these k relationships, diverge by 12 % when using CCMP, ERA or NCEP1. Due to differences in the regional wind patterns, regional discrepancies in FCO2 are more pronounced than global. These global and regional differences significantly increase when using NCEP2 or other k formulations which include earlier relationships (i.e., Wanninkhof, 1992; Wanninkhof et al., 2009 as well as numerous local and regional parameterizations derived experimentally. To minimize uncertainties associated with the choice of wind product, it is possible to recalculate the coefficient c globally (hereafter called c∗ for a given wind product and its spatio-temporal resolution, in order to match the last evaluation of the global k value. We thus performed these recalculations for each wind product at the resolution and time period of our study

  16. Uncertainty in the global oceanic CO2 uptake induced by wind forcing: quantification and spatial analysis

    Science.gov (United States)

    Roobaert, Alizée; Laruelle, Goulven G.; Landschützer, Peter; Regnier, Pierre

    2018-03-01

    The calculation of the air-water CO2 exchange (FCO2) in the ocean not only depends on the gradient in CO2 partial pressure at the air-water interface but also on the parameterization of the gas exchange transfer velocity (k) and the choice of wind product. Here, we present regional and global-scale quantifications of the uncertainty in FCO2 induced by several widely used k formulations and four wind speed data products (CCMP, ERA, NCEP1 and NCEP2). The analysis is performed at a 1° × 1° resolution using the sea surface pCO2 climatology generated by Landschützer et al. (2015a) for the 1991-2011 period, while the regional assessment relies on the segmentation proposed by the Regional Carbon Cycle Assessment and Processes (RECCAP) project. First, we use k formulations derived from the global 14C inventory relying on a quadratic relationship between k and wind speed (k = c ṡ U102; Sweeney et al., 2007; Takahashi et al., 2009; Wanninkhof, 2014), where c is a calibration coefficient and U10 is the wind speed measured 10 m above the surface. Our results show that the range of global FCO2, calculated with these k relationships, diverge by 12 % when using CCMP, ERA or NCEP1. Due to differences in the regional wind patterns, regional discrepancies in FCO2 are more pronounced than global. These global and regional differences significantly increase when using NCEP2 or other k formulations which include earlier relationships (i.e., Wanninkhof, 1992; Wanninkhof et al., 2009) as well as numerous local and regional parameterizations derived experimentally. To minimize uncertainties associated with the choice of wind product, it is possible to recalculate the coefficient c globally (hereafter called c∗) for a given wind product and its spatio-temporal resolution, in order to match the last evaluation of the global k value. We thus performed these recalculations for each wind product at the resolution and time period of our study but the resulting global FCO2 estimates

  17. Efficacy of musculoskeletal injections by primary care providers in the office: a retrospective cohort study

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    Bhagra A

    2013-04-01

    Full Text Available Anjali Bhagra,1 Husnain Syed,1 Darcy A Reed,1 Thomas H Poterucha,1 Stephen S Cha,2 Tammy J Baumgartner,1 Paul Y Takahashi1 1Department of Internal Medicine, 2Department of Health Sciences Research, Mayo Clinic, Rochester, MN, USA Background: Musculoskeletal joint pain of varied etiology can be diagnosed and treated with joint and soft-tissue corticosteroid injections. Purpose: The purpose of our study was to compare patients’ bodily pain and quality of life (QOL, in addition to the procedural benefit and patient satisfaction, before and after musculoskeletal injections in the office setting. Patients and methods: Patients were eligible for recruitment if they were over age 18 and had an injection for musculoskeletal pain from a primary care provider in an office procedural practice. Included in our analysis were knee joint/bursa, trochanteric bursa, and shoulder joint/bursa injection sites. The variables measured were pain, benefit from the injection, QOL physical and mental components, and patient satisfaction. This was a retrospective cohort study approved by the institutional review board. Results: Patients’ pain was assessed by the patients using a six-point Likert scale (none, very mild, mild, moderate, severe, and very severe. We noted that self-perception of pain decreased from 3.10 (± standard deviation at baseline 0.96 before to 2.36 (± standard deviation after the infection 1.21 (P = 0.0001 after the injection. In terms of the impact on QOL, our patients had a pre-injection physical score of 37.25 ± 8.39 and a mental score at 52.81 ± 8.98. After the injections, the physical score improved to 42.35 ± 9.07 (P = 0.0001 and the mental to 53.54 ± 8.20 (P = 0.0001 for the overall group. Ninety-six percent of the patients reported they were satisfied or extremely satisfied in the procedure clinic. Conclusion: In this study, we found significant pain relief and improved physical QOL in patients undergoing an injection in the knee

  18. Efficacy and safety of febuxostat in elderly female patients

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    Mizuno T

    2014-09-01

    Full Text Available Tomohiro Mizuno,1,2 Takahiro Hayashi,3 Sayo Hikosaka,1 Yuka Shimabukuro,1 Maho Murase,1 Kazuo Takahashi,2 Hiroki Hayashi,2 Yukio Yuzawa,2 Tadashi Nagamatsu,1 Shigeki Yamada3 1Department of Analytical Pharmacology, Graduate School of Pharmacy, Meijo University, Nagoya, Japan; 2Department of Nephrology, School of Medicine, Fujita Health University, Toyoake, Japan; 3Department of Clinical Pharmacy, School of Medicine, Fujita Health University, Toyoake, Japan Background: Maintenance of low serum urate levels is important for the management of gout. Achieving the recommended serum urate levels of less than 6.0 mg/dL is difficult in elderly (65 years of age or older patients with renal impairment. Xanthine oxidase inhibitors allopurinol and febuxostat are used for this purpose. Although febuxostat had been shown to be efficacious in elderly patients, its safety and efficacy in elderly female patients with hyper­uricemia remain unclear.Objective: The aim of this study was to assess the efficacy and safety of febuxostat in elderly female patients.Methods: We studied a retrospective cohort study. The study included elderly Japanese patients (65 years of age or older who were treated with febuxostat at Fujita Health University Hospital from January 2012 to December 2013. The treatment goal was defined as achievement of serum urate levels of 6.0 mg/dL or lower within 16 weeks; this was the primary endpoint in the present study. Adverse events of febuxostat were defined as more than twofold increases in Common Terminology Criteria for adverse events scores from baseline. Results: We evaluated 82 patients treated with febuxostat during the observation period and classified them into male (n=53 and female (n=29 groups. The mean time to achievement of the treatment goal was significantly shorter in the female group (53 days than in the male group (71 days. There were no significant differences in adverse events between the 2 groups.Conclusion: Our

  19. Numerical computation of gravitational field of general extended body and its application to rotation curve study of galaxies

    Science.gov (United States)

    Fukushima, Toshio

    2017-06-01

    Reviewed are recently developed methods of the numerical integration of the gravitational field of general two- or three-dimensional bodies with arbitrary shape and mass density distribution: (i) an axisymmetric infinitely-thin disc (Fukushima 2016a, MNRAS, 456, 3702), (ii) a general infinitely-thin plate (Fukushima 2016b, MNRAS, 459, 3825), (iii) a plane-symmetric and axisymmetric ring-like object (Fukushima 2016c, AJ, 152, 35), (iv) an axisymmetric thick disc (Fukushima 2016d, MNRAS, 462, 2138), and (v) a general three-dimensional body (Fukushima 2016e, MNRAS, 463, 1500). The key techniques employed are (a) the split quadrature method using the double exponential rule (Takahashi and Mori, 1973, Numer. Math., 21, 206), (b) the precise and fast computation of complete elliptic integrals (Fukushima 2015, J. Comp. Appl. Math., 282, 71), (c) Ridder's algorithm of numerical differentiaion (Ridder 1982, Adv. Eng. Softw., 4, 75), (d) the recursive computation of the zonal toroidal harmonics, and (e) the integration variable transformation to the local spherical polar coordinates. These devices succesfully regularize the Newton kernel in the integrands so as to provide accurate integral values. For example, the general 3D potential is regularly integrated as Φ (\\vec{x}) = - G \\int_0^∞ ( \\int_{-1}^1 ( \\int_0^{2π} ρ (\\vec{x}+\\vec{q}) dψ ) dγ ) q dq, where \\vec{q} = q (√{1-γ^2} cos ψ, √{1-γ^2} sin ψ, γ), is the relative position vector referred to \\vec{x}, the position vector at which the potential is evaluated. As a result, the new methods can compute the potential and acceleration vector very accurately. In fact, the axisymmetric integration reproduces the Miyamoto-Nagai potential with 14 correct digits. The developed methods are applied to the gravitational field study of galaxies and protoplanetary discs. Among them, the investigation on the rotation curve of M33 supports a disc-like structure of the dark matter with a double-power-law surface

  20. Inhibitory effect of the Kampo medicinal formula Yokukansan on acute stress-induced defecation in rats

    Directory of Open Access Journals (Sweden)

    Kanada Y

    2018-04-01

    Full Text Available Yasuaki Kanada, Ayami Katayama, Hideshi Ikemoto, Kana Takahashi, Mana Tsukada, Akio Nakamura, Shogo Ishino, Tadashi Hisamitsu, Masataka Sunagawa Department of Physiology, School of Medicine, Showa University, Shinagawa-ku, Tokyo, Japan Objectives: Irritable bowel syndrome (IBS is a functional gastrointestinal disorder with symptoms of abnormal defecation and abdominal discomfort. Psychological factors are well known to be involved in onset and exacerbation of IBS. A few studies have reported effectiveness of traditional herbal (Kampo medicines in IBS treatment. Yokukansan (YKS has been shown to have anti-stress and anxiolytic effects. We investigated the effect of YKS on defecation induced by stress and involvement of oxytocin (OT, a peptide hormone produced by the hypothalamus, in order to elucidate the mechanism of YKS action. Methods and results: Male Wistar rats were divided into four groups; control, YKS (300 mg/kg PO-treated non-stress (YKS, acute stress (Stress, and YKS (300 mg/kg PO-treated acute stress (Stress+YKS groups. Rats in the Stress and Stress+YKS groups were exposed to a 15-min psychological stress procedure involving novel environmental stress. Levels of plasma OT in the YKS group were significantly higher compared with those in the Control group (P < 0.05, and OT levels in the Stress+YKS group were remarkably higher than those in the other groups (P < 0.01. Next, rats were divided into four groups; Stress, Stress+YKS, Atosiban (OT receptor antagonist; 1 mg/kg IP-treated Stress+YKS (Stress+YKS+B, and OT (0.04 mg/kg IP-treated acute stress (Stress+OT groups. Rats were exposed to acute stress as in the previous experiment, and defecation during the stress load was measured. Administration of YKS or OT significantly inhibited defecation; however, administration of Atosiban partially abolished the inhibitory effect of YKS. Finally, direct action of YKS on motility of isolated colon was assessed. YKS (1 mg/mL, 5 mg/mL did not

  1. Kinesio Taping to generate skin convolutions is not better than sham taping for people with chronic non-specific low back pain: a randomised trial

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    Patrícia do Carmo Silva Parreira

    2014-06-01

    Full Text Available Question: For people with chronic low back pain, does Kinesio Taping, applied according to the treatment manual to create skin convolutions, reduce pain and disability more than a simple application without convolutions? Design: Randomised trial with concealed allocation, intention-to-treat analysis and blinded assessment of some outcomes. Participants: 148 participants with chronic non-specific low back pain. Intervention: Experimental group participants received eight sessions (over four weeks of Kinesio Taping applied according to the Kinesio Taping Method treatment manual (ie, 10 to 15% tension applied in flexion to create skin convolutions in neutral. Control group participants received eight sessions (over four weeks of Kinesio Taping with no tension, creating no convolutions. Outcome measures: The primary outcome measures were pain intensity and disability after the four-week intervention. Secondary outcomes were pain intensity and disability 12 weeks after randomisation, and global perceived effect at both four and 12 weeks after randomisation. Results: Applying Kinesio Tape to create convolutions in the skin did not significantly change its effect on pain (MD–0.4 points, 95% CI–1.3 to 0.4 or disability (MD–0.3 points, 95% CI–1.9 to 1.3 at four weeks. There was a small difference in favour of the experimental group for the secondary outcome of global perceived effect (MD 1.4 points, 95% CI 0.3 to 2.5 at four weeks. No significant between-group differences were observed for the other secondary outcomes. Conclusion: Kinesio Taping applied with stretch to generate convolutions in the skin was no more effective than simple application of the tape without tension for the outcomes measured. These results challenge the proposed mechanism of action of this therapy. Trial registration: Brazilian Registry of Clinical Trials, RBR-7ggfkv. [Parreira PCS, Costa LCM, Takahashi R, Hespanhol Junior LC, da Luz Junior MA, da Silva TM, Costa LOP

  2. Relationship between balance and physical activity measured by an activity monitor in elderly COPD patients

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    Iwakura M

    2016-07-01

    Full Text Available Masahiro Iwakura,1,2 Kazuki Okura,2 Kazuyuki Shibata,1,2 Atsuyoshi Kawagoshi,2 Keiyu Sugawara,2 Hitomi Takahashi,2 Takanobu Shioya1 1Department of Rehabilitation, Akita City Hospital, 2Department of Physical Therapy, Akita University Graduate School of Health Sciences, Akita, Japan Background: Little is known regarding the relationship between balance impairments and physical activity in COPD. There has been no study investigating the relationship between balance and objectively measured physical activity. Here we investigated the association between balance and physical activity measured by an activity monitor in elderly COPD patients. Materials and methods: Twenty-two outpatients with COPD (mean age, 72±7 years; forced expiratory volume in 1 second, 53%±21% predicted and 13 age-matched healthy control subjects (mean age, 72±6 years participated in the study. We assessed all 35 subjects’ balance (one-leg standing test [OLST] times, Short Physical Performance Battery total scores, standing balance test scores, 4 m gait speed, and five-times sit-to-stand test [5STST] and physical activity (daily steps and time spent in moderate-to-vigorous physical activity per day [MV-PA]. Possible confounders were assessed in the COPD group. The between-group differences in balance test scores and physical activity were analyzed. A correlation analysis and multivariate regression analysis were conducted in the COPD group. Results: The COPD patients exhibited significant reductions in OLST times (P=0.033, Short Physical Performance Battery scores (P=0.013, 4 m gait speed (P<0.001, five-times sit-to-stand times (P=0.002, daily steps (P=0.003, and MV-PA (P=0.022 compared to the controls; the exception was the standing balance test scores. The correlation and multivariate regression analyses revealed significant independent associations between OLST times and daily steps (P<0.001 and between OLST times and MV-PA (P=0.014 in the COPD group after adjusting for

  3. Health behaviors and quality of life predictors for risk of hospitalization in an electronic health record-linked biobank

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    Takahashi PY

    2015-08-01

    Full Text Available Paul Y Takahashi,1,2 Euijung Ryu,3 Janet E Olson,3 Erin M Winkler,4 Matthew A Hathcock,3 Ruchi Gupta,3 Jeff A Sloan,3 Jyotishman Pathak,3 Suzette J Bielinski,3 James R Cerhan3 1Division of Primary Care Internal Medicine, 2Department of Internal Medicine, 3Department of Health Sciences Research, 4Center for Individualized Medicine, Mayo Clinic, Rochester, MN, USA Background: Hospital risk stratification models using electronic health records (EHRs often use age and comorbid health burden. Our primary aim was to determine if quality of life or health behaviors captured in an EHR-linked biobank can predict future risk of hospitalization. Methods: Participants in the Mayo Clinic Biobank completed self-administered questionnaires at enrollment that included quality of life and health behaviors. Participants enrolled as of December 31, 2010 were followed for one year to ascertain hospitalization. Data on comorbidities and hospitalization were derived from the Mayo Clinic EHR. Hazard ratios (HR and 95% confidence interval (CI were used, adjusted for age and sex. We used gradient boosting machines models to integrate multiple factors. Different models were compared using C-statistic. Results: Of the 8,927 eligible Mayo Clinic Biobank participants, 834 (9.3% were hospitalized. Self-perceived health status and alcohol use had the strongest associations with risk of hospitalization. Compared to participants with excellent self-perceived health, those reporting poor/fair health had higher risk of hospitalization (HR =3.66, 95% CI 2.74–4.88. Alcohol use was inversely associated with hospitalization (HR =0.57 95% CI 0.45–0.72. The gradient boosting machines model estimated self-perceived health as the most influential factor (relative influence =16%. The predictive ability of the model based on comorbidities was slightly higher than the one based on the self-perceived health (C-statistic =0.67 vs 0.65. Conclusion: This study demonstrates that self

  4. Seasonal and spatial variability of the OM/OC mass ratios and high regional correlation between oxalic acid and zinc in Chinese urban organic aerosols

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    L. Xing

    2013-04-01

    Full Text Available We calculated the organic matter to organic carbon mass ratios (OM/OC mass ratios in PM2.5 collected from 14 Chinese cities during summer and winter of 2003 and analyzed the causes for their seasonal and spatial variability. The OM/OC mass ratios were calculated two ways. Using a mass balance method, the calculated OM/OC mass ratios averaged 1.92 ± 0.39 year-round, with no significant seasonal or spatial variation. The second calculation was based on chemical species analyses of the organic compounds extracted from the PM2.5 samples using dichloromethane/methanol and water. The calculated OM/OC mass ratio in summer was relatively high (1.75 ± 0.13 and spatially-invariant due to vigorous photochemistry and secondary organic aerosol (OA production throughout the country. The calculated OM/OC mass ratio in winter (1.59 ± 0.18 was significantly lower than that in summer, with lower values in northern cities (1.51 ± 0.07 than in southern cities (1.65 ± 0.15. This likely reflects the wider usage of coal for heating purposes in northern China in winter, in contrast to the larger contributions from biofuel and biomass burning in southern China in winter. On average, organic matter constituted 36% and 34% of Chinese urban PM2.5 mass in summer and winter, respectively. We report, for the first time, a high regional correlation between Zn and oxalic acid in Chinese urban aerosols in summer. This is consistent with the formation of stable Zn oxalate complex in the aerosol phase previously proposed by Furukawa and Takahashi (2011. We found that many other dicarboxylic acids were also highly correlated with Zn in the summer Chinese urban aerosol samples, suggesting that they may also form stable organic complexes with Zn. Such formation may have profound implications for the atmospheric abundance and hygroscopic properties of aerosol dicarboxylic acids.

  5. Seasonal and spatial variability of the OM/OC mass ratios and high regional correlation between oxalic acid and zinc in Chinese urban organic aerosols

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    Xing, L.; Fu, T.-M.; Cao, J. J.; Lee, S. C.; Wang, G. H.; Ho, K. F.; Cheng, M.-C.; You, C.-F.; Wang, T. J.

    2013-04-01

    We calculated the organic matter to organic carbon mass ratios (OM/OC mass ratios) in PM2.5 collected from 14 Chinese cities during summer and winter of 2003 and analyzed the causes for their seasonal and spatial variability. The OM/OC mass ratios were calculated two ways. Using a mass balance method, the calculated OM/OC mass ratios averaged 1.92 ± 0.39 year-round, with no significant seasonal or spatial variation. The second calculation was based on chemical species analyses of the organic compounds extracted from the PM2.5 samples using dichloromethane/methanol and water. The calculated OM/OC mass ratio in summer was relatively high (1.75 ± 0.13) and spatially-invariant due to vigorous photochemistry and secondary organic aerosol (OA) production throughout the country. The calculated OM/OC mass ratio in winter (1.59 ± 0.18) was significantly lower than that in summer, with lower values in northern cities (1.51 ± 0.07) than in southern cities (1.65 ± 0.15). This likely reflects the wider usage of coal for heating purposes in northern China in winter, in contrast to the larger contributions from biofuel and biomass burning in southern China in winter. On average, organic matter constituted 36% and 34% of Chinese urban PM2.5 mass in summer and winter, respectively. We report, for the first time, a high regional correlation between Zn and oxalic acid in Chinese urban aerosols in summer. This is consistent with the formation of stable Zn oxalate complex in the aerosol phase previously proposed by Furukawa and Takahashi (2011). We found that many other dicarboxylic acids were also highly correlated with Zn in the summer Chinese urban aerosol samples, suggesting that they may also form stable organic complexes with Zn. Such formation may have profound implications for the atmospheric abundance and hygroscopic properties of aerosol dicarboxylic acids.

  6. Comparative effect of clopidogrel plus aspirin and aspirin monotherapy on hematological parameters using propensity score matching

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    Hayasaka M

    2013-02-01

    Full Text Available Masatoshi Hayasaka,1 Yasuo Takahashi,2 Yayoi Nishida,2 Yoshikazu Yoshida,1 Shinji Hidaka,3 Satoshi Asai41Department of Pharmacy, Nihon University Itabashi Hospital, Tokyo, 2Division of Genomic Epidemiology and Clinical Trials, Clinical Trials Research Center, Nihon University School of Medicine, Tokyo, 3Laboratory of Pharmaceutical Regulatory Science, Department of Pharmacy, School of Pharmacy, Nihon University, Chiba, 4Division of Pharmacology, Department of Biomedical Sciences, Nihon University School of Medicine, Tokyo, JapanBackground: Clopidogrel and aspirin are antiplatelet agents that are recommended to reduce the risk of recurrent stroke and other cardiovascular events. Dual antiplatelet therapy with clopidogrel and aspirin has been shown to increase the risk of hemorrhage, but the effects of the drugs on laboratory parameters have not been well studied in real-world clinical settings. Therefore, we evaluated and compared the effects of combination therapy with clopidogrel plus aspirin and aspirin monotherapy on laboratory parameters.Methods: We used data from the Nihon University School of Medicine Clinical Data Warehouse obtained between November 2004 and May 2011 to identify cohorts of new users (n = 130 of clopidogrel (75 mg/day plus aspirin (100 mg/day and a propensity score matched sample of new users (n = 130 of aspirin alone (100 mg/day. We used a multivariate regression model to compare serum levels of creatinine, aspartate aminotransferase, and alanine aminotransferase, as well as hematological parameters including hemoglobin level, hematocrit, and white blood cell, red blood cell, and platelet counts up to 2 months after the start of administration of the study drugs.Results: There were no significant differences for any characteristics and baseline laboratory parameters between users of clopidogrel plus aspirin and users of aspirin alone. Reductions in white blood cell and red blood cell counts, hemoglobin levels, and

  7. Increased risk of hospitalization for ultrarapid metabolizers of cytochrome P450 2D6

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    Takahashi PY

    2017-02-01

    Full Text Available Paul Y Takahashi,1 Euijung Ryu,2 Jyotishman Pathak,2 Gregory D Jenkins,2 Anthony Batzler,2 Matthew A Hathcock,2 John Logan Black,3 Janet E Olson,2 James R Cerhan,2 Suzette J Bielinski2 1Division of Primary Care Internal Medicine, Department of Medicine, 2Department of Health Sciences Research, 3Division of Clinical Biochemistry and Immunology, Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN, USA Background: Cytochrome P450 2D6 (CYP2D6 is responsible for the metabolism of clinically used drugs and other environmental exposures, but it is unclear whether the CYP2D6 phenotype is associated with adverse health outcomes. The aim was to determine the association of CYP2D6 phenotype with the risk of hospitalization or an emergency department (ED visit among a group of primary care patients. Methods: In this study, 929 adult patients underwent CYP2D6 testing. The primary outcome was risk of hospitalization or an ED visit from January 2005 through September 2014. CYP2D6 genotypes were interpreted as 1 of 7 clinical phenotypes, from ultrarapid to poor metabolizer, and patients with the extensive metabolizer phenotype were used as the reference group. The hazard ratios (HRs and 95% confidence intervals (CIs were estimated for finding the association of CYP2D6 phenotypes with the risk of hospitalization or an ED visit by using Cox proportional hazard models and adjusting for age and sex. Results: The median age was 49 years (interquartile range, 46–52 years; 74% of patients had 3 or fewer chronic conditions, 285 had at least 1 hospitalization, and 496 had at least 1 ED visit. The risk of hospitalization was higher among patients who were ultrarapid metabolizers compared to extensive metabolizers (47% vs 30%; HR, 1.69; 95% CI, 1.11–2.57, as was the risk of an ED visit (62% vs 49%; HR, 1.50; 95% CI, 1.05–2.14. For poor metabolizers compared to extensive metabolizers, there was no difference in the risk of hospitalization (HR

  8. Self-rated cognitive functions following chemotherapy in patients with breast cancer: a 6-month prospective study

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    Kitahata R

    2017-10-01

    Full Text Available Ryosuke Kitahata,1 Shinichiro Nakajima,1–4 Hiroyuki Uchida,1,3 Tetsu Hayashida,5 Maiko Takahashi,5 Shintaro Nio,1 Jinichi Hirano,1 Maki Nagaoka,1 Takefumi Suzuki,1 Hiromitsu Jinno,6 Yuko Kitagawa,5 Masaru Mimura1 1Psychopharmacology Research Program, Department of Neuropsychiatry, School of Medicine, Keio University, Tokyo, Japan; 2Multimodal Imaging Group – Research Imaging Centre, 3Geriatric Mental Health Division, Centre for Addiction and Mental Health, 4Department of Psychiatry, University of Toronto, Toronto, Canada; 5Department of Surgery, School of Medicine, Keio University, 6Department of Surgery, School of Medicine, Teikyo University, Tokyo, Japan Purpose: The purpose of the study was to evaluate subjective (self-rated, family-rated, and objective (researcher-rated cognitive functions in patients with breast cancer after chemotherapy.Method: We conducted a prospective study to trace self-rated cognitive functions in 30 patients with breast cancer at the completion of chemotherapy (T0 and 6 months later (T1. Subjective cognitive functions were assessed with Cognitive Failures Questionnaire (CFQ, Dysexecutive Questionnaire (DEX-S, and Everyday Memory Checklist (EMC-S for attention, executive function, and episodic memory, respectively. Their family members also completed DEX-I and EMC-I for executive function and episodic memory, respectively. We also examined objective cognitive functions. Self-rated cognitive functions were compared with the normative data. They were compared between T0 and T1. We calculated correlation coefficients between self-rated and other cognitive functions.Results: At T0, 6 (20.0% and 2 (6.7% participants showed higher DEX-S and EMC-S scores than the normative data, respectively, while no participant had abnormal CFQ scores. At T1, DEX-S and EMC-S scores were normalized in 3 (50.0% and 2 (100.0% participants, respectively. No participant showed increases in CFQ scores. No changes were found in objective

  9. Molecular epidemiology of clinical and carrier strains of methicillin resistant Staphylococcus aureus (MRSA in the hospital settings of north India

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    Dar Mohammad J

    2006-09-01

    Full Text Available Abstract Background The study was conducted between 2000 and 2003 on 750 human subjects, yielding 850 strains of staphylococci from clinical specimens (575, nasal cultures of hospitalized patients (100 and eye & nasal sources of hospital workers (50 & 125 respectively in order to determine their epidemiology, acquisition and dissemination of resistance genes. Methods Organisms from clinical samples were isolated, cultured and identified as per the standard routine procedures. Susceptibility was measured by the agar diffusion method, as recommended by the Nat ional Committee for Clinical Laboratory Standards (NCCLS. The modified method of Birnboin and Takahashi was used for isolation of plasmids from staphylococci. Pulsed-field gel electrophoresis (PFGE typing of clinical and carrier Methicillin resistant Staphylococcus aureus (MRSA strains isolated during our study was performed as described previously. Results It was shown that 35.1% of Staphylococcus aureus and 22.5% of coagulase-negative staphylococcal isolates were resistant to methicillin. Highest percentage of MRSA (35.5% was found in pus specimens (n = 151. The multiple drug resistance of all MRSA (n = 180 and Methicillin resistant Coagulase-negative Staphylococcus aureus (MRCNS (n = 76 isolates was detected. In case of both methicillin-resistant as well as methicillin-sensitive Saphylococcal isolates zero resistance was found to vancomycin where as highest resistance was found to penicillin G followed by ampicillin. It was shown that the major reservoir of methicillin resistant staphylococci in hospitals are colonized/infected inpatients and colonized hospital workers, with carriers at risk for developing endogenous infection or transmitting infection to health care workers and patients. The results were confirmed by molecular typing using PFGE by SmaI-digestion. It was shown that the resistant markers G and T got transferred from clinical S. aureus (JS-105 to carrier S. aureus (JN-49

  10. Association of code status discussion with invasive procedures among advanced-stage cancer and noncancer patients

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    Sasaki A

    2017-07-01

    Full Text Available Akinori Sasaki,1 Eiji Hiraoka,1 Yosuke Homma,2 Osamu Takahashi,3 Yasuhiro Norisue,4 Koji Kawai,5 Shigeki Fujitani4 1Department of Internal Medicine, 2Department of Emergency Medicine, Tokyo Bay Urayasu Ichikawa Medical Center, Urayasu City, Chiba, 3Department of Internal Medicine, St. Luke’s International Hospital, Chuo-ku, Tokyo, 4Department of Critical Care Medicine, Tokyo Bay Urayasu Ichikawa Medical Center, Urayasu City, Chiba, 5Department of Gastroenterology, Ito Municipal Hospital, Ito City, Shizuoka, Japan Background: Code status discussion is associated with a decrease in invasive procedures among terminally ill cancer patients. We investigated the association between code status discussion on admission and incidence of invasive procedures, cardiopulmonary resuscitation (CPR, and opioid use among inpatients with advanced stages of cancer and noncancer diseases. Methods: We performed a retrospective cohort study in a single center, Ito Municipal Hospital, Japan. Participants were patients who were admitted to the Department of Internal Medicine between October 1, 2013 and August 30, 2015, with advanced-stage cancer and noncancer. We collected demographic data and inquired the presence or absence of code status discussion within 24 hours of admission and whether invasive procedures, including central venous catheter placement, intubation with mechanical ventilation, and CPR for cardiac arrest, and opioid treatment were performed. We investigated the factors associated with CPR events by using multivariate logistic regression analysis. Results: Among the total 232 patients, code status was discussed with 115 patients on admission, of which 114 (99.1% patients had do-not-resuscitate (DNR orders. The code status was not discussed with the remaining 117 patients on admission, of which 69 (59% patients had subsequent code status discussion with resultant DNR orders. Code status discussion on admission decreased the incidence of central venous

  11. PREFACE: International Symposium on Materials Science and Innovation for Sustainable Society - Eco-Materials and Eco-Innovation for Global Sustainability - The 21st Iketani Conference 2011

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    Takahashi, Yasuo

    2012-08-01

    my sincere appreciation to all the committees and secretariats, authors, participants of ECO-MATES 2011, and everybody involved in the publication of this special issue. It is a great honor for me that the special issue of Journal of Physics: Conference Series will contribute to establishing green innovations and a sustainable society. Chairman's signature Yasuo Takahashi Chairman of ECO-MATES 2011 Conference photograph ECO-MATES 2011 November 28-30, 2011 Venue: Hotel Hankyu Expo Park, Osaka, Japan The PDF also contains a list of the organizing committees.

  12. Possible Role of Hydrogen in the Earth Core

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    Takahashi, E.; Imai, T.

    2011-12-01

    Possible role of hydrogen in the Earth core has been discussed by Stevenson (1977) and demonstrated experimentally by Fukai (1984), Okuchi (1997) and others. Planetary theory proposes a possibility of hydrogen incorporation in Earth's magma ocean from ambient solar nebula gas (Ikoma & Genda 2005, Genda & Ikoma 2008). More recently, migration of snow line during planet formation was examined (Min et al., 2010; Oka et al, 2011) and it was proposed that the Earth building material originally contained abundant water as ice and hydrous minerals. Therefore, it is very important to investigate the fate of water in the planet building process and clarify the role of hydrogen in the planetary core. Using SPring-8 synchrotron (NaCl capsule, LiAlH4 as hydrogen source), we determined the melting curve of FeH up to 20 GPa under hydrogen saturated conditions (Sakamaki, Takahashi et al, 2009). Observed melting point is below 1300C and has a very small dT/dP slope. By extrapolating the melting curve using Lindeman's law, we proposed that hydrogen could lower the melting temperature of the Earth core by more than 1500K than current estimate. Here we report our new experiments using SPring-8 synchrotron (single crystal diamond capsule, water as hydrogen source). Hydrogen concentration and melting temperature of FeHx that coexists with hydrous mantle minerals were determined at 15-20GPa and 1000-1600C. We show that 1) hydrogen concentration in FeHx at 1000C, coexisting with hydrous-B and ringwoodite is approximately X=0.6. 2) Upon heating, hydrous-B decomposes and hydrogen strongly partitions into FeHx (X=0.8~1.0) than ringwoodite. 3) FeHx that coexists with ringwoodite melts between ~1300C (solidus) and ~1600C (liquidus). Combined our new experiments with those by Sakamaki et al (2009) and Shibazaki et al (2009), partitioning of hydrogen between proto-core and primitive mantle is discussed. We propose that >90% of water in the source material may have entered the Earth core. Given

  13. Patient quality of life in the Mayo Clinic Care Transitions program: a survey study

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    Faucher J

    2016-08-01

    Full Text Available Joshua Faucher,1 Jordan Rosedahl,2 Dawn Finnie,3 Amy Glasgow,3 Paul Takahashi4 1Mayo Medical School, Mayo Clinic College of Medicine, 2Division of Biomedical Statistics and Informatics, Department of Health Science Research, Mayo Clinic, 3Center for the Science of Health Care Delivery, 4Division of Primary Care Internal Medicine, Department of Medicine, Mayo Clinic, Rochester, MN, USA Background: Transitional care programs are common interventions aimed at reducing medical complications and associated readmissions for patients recently discharged from the hospital. While organizations strive to reduce readmissions, another important related metric is patient quality of life (QoL. Aims: To compare the relationship between QoL in patients enrolled in the Mayo Clinic Care Transitions (MCCT program versus usual care, and to determine if QoL changed in MCCT participants between baseline and 1-year follow-up. Methods: A baseline survey was mailed to MCCT enrollees in March 2013. Those who completed a baseline survey were sent a follow-up survey 1 year later. A cross-sectional survey of usual care participants was mailed in November 2013. We included in our analysis 199 participants (83 in the MCCT and 116 in usual care aged over 60 years with multiple comorbidities and receiving primary care. Primary outcomes were self-rated QoL; secondary outcomes included self-reported general, physical, and mental health. Intra- and intergroup comparisons of patients were evaluated using Pearson’s chi-squared analysis. Results: MCCT participants had more comorbidities and higher elder risk assessment scores than those receiving usual care. At baseline, 74% of MCCT participants reported responses of good-to-excellent QoL compared to 64% after 1 year (P=0.16. Between MCCT and usual care, there was no significant difference in self-reported QoL (P=0.21. Between baseline and follow-up in MCCT patients, and compared to usual care, there were no significant

  14. Physical inactivity is associated with decreased growth differentiation factor 11 in chronic obstructive pulmonary disease

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    Tanaka R

    2018-04-01

    Full Text Available Rie Tanaka,1 Hisatoshi Sugiura,1 Mitsuhiro Yamada,1 Tomohiro Ichikawa,1 Akira Koarai,1 Naoya Fujino,1 Satoru Yanagisawa,1 Katsuhiro Onodera,1 Tadahisa Numakura,1 Kei Sato,1 Yorihiko Kyogoku,1 Hirohito Sano,1 Shun Yamanaka,1 Tatsuma Okazaki,1 Tsutomu Tamada,1 Motohiko Miura,2 Tsuneyuki Takahashi,3 Masakazu Ichinose1 1Department of Respiratory Medicine, Tohoku University Graduate School of Medicine, Aoba-ku, Sendai, Japan; 2Department of Respiratory Medicine, Tohoku Rosai Hospital, Aoba-ku, Sendai, Japan; 3Department of Internal Medicine, Tohoku Medical and Pharmaceutical University Wakabayashi Hospital, Wakabayashi-ku, Sendai, Japan Background: Growth differentiation factor 11 (GDF11 is reported to possess anti-aging and rejuvenating effects, including muscle regeneration and to be highly expressed in skeletal muscle. Recently, we demonstrated that the levels of plasma GDF11 were decreased in COPD. However, the effect of decreased circulating GDF11 in the pathophysiology of COPD remains unknown. The aim of this study is to investigate the association between the plasma GDF11 levels and various clinical parameters in patients with COPD. Patients and methods: Eighteen ex-smokers as control subjects and 70 COPD patients participated in the current study. We measured the levels of plasma GDF11 using immunoblotting, lung function, physical activity using a triaxial accelerometer, quadriceps strength, exercise capacity, and systemic inflammatory markers. We investigated the association between the levels of plasma GDF11 and these clinical parameters. Results: The levels of plasma GDF11 in the COPD patients had significant positive correlations with the data of lung function. Furthermore, the levels of plasma GDF11 were significantly correlated with the physical activity, quadriceps strength, and exercise capacity. Moreover, the levels of plasma GDF11 were significantly correlated with the data of inflammatory markers. Although various factors were

  15. Neural network analysis for geological interpretation of tomographic images beneath the Japan Islands

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    Kuwatani, T.; Toriumi, M.

    2009-12-01

    prediction of lithology and its structure, we will use the additional input data sets, such as tomographic images of random velocity fluctuation (Takahashi et al. 2009) and b-value mapping data. Additionally, different kinds of data sets, including the experimental and petrological results (e.g. Christensen 1991; Hacker et al. 2003) can be applied to our analyses.

  16. Nanogel-crosslinked nanoparticles increase the inhibitory effects of W9 synthetic peptide on bone loss in a murine bone resorption model

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    Sato T

    2015-05-01

    Full Text Available Toshimi Sato,1 Neil Alles,1,2 Masud Khan,1,3 Kenichi Nagano,1,4 Mariko Takahashi,1 Yukihiko Tamura,1 Asako Shimoda,5,6 Keiichi Ohya,1 Kazunari Akiyoshi,5,6 Kazuhiro Aoki1 1Department of Bio-Matrix (Pharmacology, Graduate School, Tokyo Medical and Dental University, Tokyo, Japan; 2Department of Biochemistry, Faculty of Medicine, University of Peradeniya, Peradeniya, Sri Lanka; 3Department of Dental Pharmacology, City Dental College and Hospital, Dhaka, Bangladesh; 4Department of Oral Medicine, Infection and Immunity, Harvard School of Dental Medicine, Boston, MA, USA; 5Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Katsura, 6ERATO Akiyoshi Bio-Nanotransporter Project, Japan Science and Technology Agency, Katsura Int’tech Center Kyotodaigaku-Katsura, Nishikyo-ku, Kyoto, Japan Abstract: We investigated the biological activity of W9, a bone resorption inhibitor peptide, using NanoClik nanoparticles as an injectable carrier, where acryloyl group-modified cholesterol-bearing pullulan (CHPOA nanogels were crosslinked by pentaerythritol tetra (mercaptoethyl polyoxyethylene. Thirty 5-week-old male C57BL/6J mice were fed a low calcium diet and received once-daily subcutaneous injections of the carrier alone, W9 24 mg/kg/day alone, W9 24 mg/kg/day incorporated in cholesterol bearing pullulan (CHP nanogels, or W9 (8 and 24 mg/kg/day incorporated in NanoClik nanoparticles for 4 days (n=5. Mice that received a normal calcium diet with NanoClik nanoparticle injections without W9 were used as a control group. Radiological analyses showed that administration of W9 24 mg/kg/day significantly prevented low calcium-induced reduction of bone mineral density in the long bones and lumbar vertebrae, but only when the NanoClik nanoparticles were used as a carrier. Histomorphometric analyses of the proximal tibiae revealed that W9 24 mg/kg/day incorporated in NanoClik nanoparticles prevented the increase in bone resorption indices

  17. Diagnosis and activity assessment of immunoglobulin A nephropathy: current perspectives on noninvasive testing with aberrantly glycosylated immunoglobulin A-related biomarkers

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    Suzuki Y

    2014-10-01

    Full Text Available Yusuke Suzuki,1 Hitoshi Suzuki,1 Yuko Makita,1 Akiko Takahata,1 Keiko Takahashi,1 Masahiro Muto,1 Yohei Sasaki,1 Atikemu Kelimu,1 Keiichi Matsuzaki,2 Hiroyuki Yanagawa,1 Keiko Okazaki,1 Yasuhiko Tomino1 1Division of Nephrology, Department of Internal Medicine, Juntendo University Faculty of Medicine, Tokyo, 2Kyoto University Health Service, Kyoto, Japan Abstract: Immunoglobulin (Ig A nephropathy (IgAN is the most common form of glomerular disease worldwide and is associated with a poor prognosis. Thus, development of a curative treatment and strategies for early diagnosis and treatment are urgently needed. Pathological analysis of renal biopsy is the gold standard for the diagnosis and assessment of disease activity; however, immediate and frequent assessment based on biopsy specimens is difficult. Therefore, a simple and safe alternative is desirable. On the other hand, it is now widely accepted that multi-hit steps, including production of aberrantly glycosylated serum IgA1 (first hit, and IgG or IgA autoantibodies that recognize glycan containing epitopes on glycosylated serum IgA1 (second hit and their subsequent immune complex formation (third hit and glomerular deposition (fourth hit, are required for continued progression of IgAN. Although the prognostic and predictive values of several markers have been discussed elsewhere, we recently developed a highly sensitive and specific diagnostic method by measuring serum levels of glycosylated serum IgA1 and related IgA immune complex. In addition, we confirmed a significant correlation between serum levels of these essential effector molecules and disease activity after treatment, suggesting that each can be considered as a practical surrogate marker of therapeutic effects in this slowly progressive disease. Such a noninvasive diagnostic and activity assessment method using these disease-oriented specific biomarkers may be useful in the early diagnosis of and intervention in IgAN, with

  18. A cross-sectional survey of the relationship between walking, biking, and the built environment for adults aged over 70 years

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    Takahashi PY

    2012-04-01

    Full Text Available Paul Y Takahashi1, Mitzi A Baker3, Stephan Cha2, Paul V Targonski11Primary Care Internal Medicine, 2Biomedical Statistics and Informatics, Mayo Clinic, 3Planning Department, Olmsted County, Rochester, MN, USAPurpose: Determine the relationship between walkability scores (using the Walk Score® and activity levels (both bicycle and walking in adults aged between 70 and 85 years in Rochester, Minnesota.Patients and methods: This was a self-reported cross-sectional survey in adults aged over 70 years living in Rochester, Minnesota. Analysis used t-tests or chi-square analysis as appropriate. The primary endpoint was bicycle use or walking. The predictor variables were the Walk Score® as determined by their address, Charlson index, Duke Activity Status Index (DASI, and a 12-item short-form survey (SF-12 scores. Secondary analysis used an outcome of functional status (using the DASI and walkability scores.Results: Fifty-three individuals completed the surveys (48% return rate. The average age in the overall cohort was 77.02 years. Eighty-nine percent of individuals could walk at least a block and 15.1% rode their bicycles. The Walk Scores® did not differ between those who walked (38.9 ± 27.4 and those that did not (40.0 ± 36.08; P = 0.93. In a similar fashion, the Walk Scores® were not different for those who biked (36.38 ± 27.68 and those that did not (39.44 ± 28.49; P = 0.78. There was no relationship between Walk Scores® and DASI; however, a decreased DASI score was associated with increased age and comorbid illness (Charlson Score.Conclusion: In this small pilot survey, there was no difference in Walk Scores® between those older adults who walked or biked, compared to those that did not. The Walk Scores® were low in both groups, which may indicate the lack of accessibility for all older adults living in Rochester, Minnesota. The functional status seemed to be more related to age or comorbid conditions than the built environment

  19. Magmatic Diversity of the Wehrlitic Intrusions in the Oceanic Lower Crust of the Northern Oman Ophiolite

    Science.gov (United States)

    Kaneko, R.; Adachi, Y.; Miyashita, S.

    2014-12-01

    .38 wt% and 0.26 wt%, respectively, and plot on the field of MOR magmatism. The most-evolved Ol (Fo% = 84.7) from the wehrlitic intrusions has high NiO (0.31 wt%) and plots on the olivine mantle array (Takahashi 1986). It is suggested that heterogeneity of source mantle influences the magmatic diversity of the wehrlitic intrusions.

  20. Health numeracy in Japan: measures of basic numeracy account for framing bias in a highly numerate population

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    Okamoto Masako

    2012-09-01

    Full Text Available Abstract Background Health numeracy is an important factor in how well people make decisions based on medical risk information. However, in many countries, including Japan, numeracy studies have been limited. Methods To fill this gap, we evaluated health numeracy levels in a sample of Japanese adults by translating two well-known scales that objectively measure basic understanding of math and probability: the 3-item numeracy scale developed by Schwartz and colleagues (the Schwartz scale and its expanded version, the 11-item numeracy scale developed by Lipkus and colleagues (the Lipkus scale. Results Participants’ performances (n = 300 on the scales were much higher than in original studies conducted in the United States (80% average item-wise correct response rate for Schwartz-J, and 87% for Lipkus-J. This high performance resulted in a ceiling effect on the distributions of both scores, which made it difficult to apply parametric statistical analysis, and limited the interpretation of statistical results. Nevertheless, the data provided some evidence for the reliability and validity of these scales: The reliability of the Japanese versions (Schwartz-J and Lipkus-J was comparable to the original in terms of their internal consistency (Cronbach’s α = 0.53 for Schwartz-J and 0.72 for Lipkus-J. Convergent validity was suggested by positive correlations with an existing Japanese health literacy measure (the Test for Ability to Interpret Medical Information developed by Takahashi and colleagues that contains some items relevant to numeracy. Furthermore, as shown in the previous studies, health numeracy was still associated with framing bias with individuals whose Lipkus-J performance was below the median being significantly influenced by how probability was framed when they rated surgical risks. A significant association was also found using Schwartz-J, which consisted of only three items. Conclusions Despite relatively high levels of

  1. Complex comprised of dextran magnetite and conjugated cisplatin exhibiting selective hyperthermic and controlled-release potential

    Directory of Open Access Journals (Sweden)

    Akinaga Sonoda

    2010-07-01

    Full Text Available Akinaga Sonoda1, Norihisa Nitta1, Ayumi Nitta-Seko1, Shinich Ohta1, Shigeyuki Takamatsu2, Yoshio Ikehata3, Isamu Nagano3, Jun-ichiro Jo4, Yasuhiko Tabata4, Masashi Takahashi1, Osamu Matsui3, Kiyoshi Murata11Department of Radiology, Shiga University of Medical Science, Setatsukinowa-cho, Otsu, Shiga, 520-2192, Japan; 2Department of Radiology, Graduate School of Medical Science, Kanazawa University, Takara-machi 13-1, Kanazawa Ishikawa, 920-8641, Japan; 3Department of Natural Science and Technology, Graduate School of Engineering, Kanazawa University, Kakuma-machi, Kanazawa, Ishikawa 920-1192, Japan; 4Department of Biomaterials, Institute for Frontier Medical Sciences, Kyoto University, Shogoin kawara-machi 53, Sakyo-ku 606-8507, Kyoto, JapanAbstract: We developed a dextran-magnetite conjugated cisplatin (DM-Cis complex for use in thermal ablation and as a chemotherapeutic drug. To produce DM-Cis we reacted Cis with 1 mL DM (56 mg/mL iron. The temperature rise of DM-Cis was measured in vitro and in vivo under a portable induction-heating (IH device. Platinum desorption from DM-Cis over 24 hours was measured in bovine serum. In in vivo accumulation and magnet and exothermic experiments we used four rat groups. In group 1 we delivered DM-Cis intraperitoneally (ip and placed magnets subcutaneously (sc. In group 2 we injected saline (ip and placed magnets (sc. In group 3 we injected DM-Cis (ip and placed a sc incision (sham. The control (group 4 received an ip injection of saline. Rectus abdominis muscle tissue was stained with hematoxylin-eosin and iron-stained tissue areas (µm2 were calculated. The maximum platinum concentration in DM-Cis was approximately 105.6 µg/mL. Over 24 hours, 33.48% of platinum from DM-Cis was released. There was a significant difference (P < 0.05 in the iron-stained area between group 1 and the other groups. The temperature in muscle tissue registered a maximum of 56°C after about 4 min. DM-Cis may represent a

  2. Evaluation of atherosclerotic lesions using dextran- and mannan–dextran-coated USPIO: MRI analysis and pathological findings

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    Mukaisho K

    2012-05-01

    Full Text Available Keiko Tsuchiya1, Norihisa Nitta1, Akinaga Sonoda1, Ayumi Nitta-Seko1, Shinichi Ohta1, Masashi Takahashi1, Kiyoshi Murata1, Kenichi Mukaisho2, Masashi Shiomi3, Yasuhiko Tabata4, Satoshi Nohara51Department of Radiology, 2Department of Pathology, Shiga University of Medical Science, Otsu, Shiga, 3Institute for Experimental Animals, Kobe University School of Medicine, Kobe, Hyogo, 4Department of Biomaterials, Institute for Frontier Medical Sciences, Kyoto University, Kyoto, 5Nagoya Research Laboratory, Meito Sangyo, Kiyosu, Aichi, JapanAbstract: Magnetic resonance imaging (MRI can detect atherosclerotic lesions containing accumulations of ultrasmall superparamagnetic iron oxides (USPIO. Positing that improved USPIO with a higher affinity for atherosclerotic plaques would yield better plaque images, we performed MRI and histologic studies to compare the uptake of dextran- and mannan–dextran-coated USPIO (D-USPIO and DM-USPIO, respectively by the atherosclerotic walls of rabbits. We intravenously injected atherosclerotic rabbits with DM-USPIO (n = 5 or D-USPIO (n = 5. Two rabbits were the controls. The doses delivered were 0.08 (dose 1 (n = 1, 0.4 (dose 2 (n = 1, or 0.8 (dose 3 (n = 3 mmol iron/Kg. The dose 3 rabbits underwent in vivo contrast-enhanced magnetic resonance angiography (MRA before and 5 days after USPIO administration. Afterwards, all animals were euthanized, the aortae were removed and subjected to in vitro MRI study. The signal-to-noise ratio (SNR of the aortic wall in the same region of interest (ROI was calculated in both in vivo and in vitro studies. Histological assessment through measurement of iron-positive regions in Prussian blue-stained specimens showed that iron-positive regions were significantly larger in rabbits injected with DM- rather than D-USPIO (P < 0.05 for all doses. In vivo MRA showed that the SNR-reducing effect of DM- was greater than that of D-USPIO (P < 0.05. With in vitro MRI scans, SNR was significantly

  3. What is the true definition of a "Do-Not-Resuscitate" order? A Japanese perspective

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    Hiraoka E

    2016-06-01

    Full Text Available Eiji Hiraoka,1 Yosuke Homma,2 Yasuhiro Norisue,3 Takaki Naito,1 Yuko Kataoka,1 Osamu Hamada,1 Yo Den,1 Osamu Takahashi,4 Shigeki Fujitani3 1Department of Internal Medicine, 2Department of Emergency Medicine, 3Department of Critical Care Medicine, Tokyo Bay Urayasu Ichikawa Medical Center, Chiba, Japan; 4Department of Internal Medicine, St Luke’s International Hospital, Tokyo, Japan Background: Japan has no official guidelines for do-not-resuscitate (DNR orders. Therefore, we investigated the effect of DNR orders on physician decision making in relation to performing noncardiopulmonary resuscitation (CPR and CPR procedures.Methods: A case-scenario-based questionnaire that included a case of advanced cancer, a case of advanced dementia, and a case of nonadvanced heart failure was administered to physicians. The questions determined whether physicians would perform different non-CPR procedures and CPR procedures in the presence or absence of DNR orders. The number of non-CPR procedures each physician would perform and the number of physicians who would perform each non-CPR and CPR procedure in the absence and presence of DNR ocrders were compared. Physicians from three Japanese municipal acute care hospitals participated.Results: We analyzed 111 of 161 (69% questionnaires. Physicians would perform significantly fewer non-CPR procedures in the presence of DNR orders than in the absence of DNR orders for all three case scenarios (median [interquartile range] percentages: Case 1: 72% [45%–90%] vs 100% [90%–100%]; Case 2: 55% [36%–72%] vs 91% [63%–100%]; Case 3: 78% [55%–88%] vs 100% [88%–100%]. Fewer physicians would perform non-CPR and CPR procedures in the presence of DNR orders than in the absence of DNR orders. However, considerable numbers of physicians would perform electric shock treatment for ventricular fibrillation in the presence of DNR orders (Case 1: 26%; Case 2: 16%; Case 3: 20%.Conclusion: DNR orders affect physician

  4. Positive grid corrosion elongation analysis using CAE with corrosion deformation transformed into thermal phenomenon

    Science.gov (United States)

    Mukaitani, Ichiroh; Hayashi, Koji; Shimoura, Ichiro; Takemasa, Arihiko; Takahashi, Isamu; Tsubakino, Harushige

    Valve-regulated lead-acid (VRLA) batteries have been commercially available for more than 20 years and have been enthusiastically embraced by users of uninterruptible power supplies (UPS) because of the anticipated reduction in installation and operating costs, smaller footprint and fewer environmental concerns. In Japan, communication networks are demanding reduced costs and longer life from their batteries. Among the factors limiting the life of VRLA batteries, the corrosion of positive grid material has been proven to cause elongation of the plates, loss of electrical contact and shorter lifetime. The content of Sn is also a key factor and addition of Sn in the grid alloy results in better performance in creep resistance, tensile strength and corrosion resistance [R. David Prenagaman, The Battery Man, vol. 39, September 1997, p. 16. I. Mukaitani, T. Sakamoto, T. Kikuoka, Y. Yamaguchi, H. Tsubakino, Proceedings of the 40th Battery Symposium in Japan, 1999, p. 99]. A key point is what the ratio of Sn to Ca should be, since too much Sn may lead to even worse elongation of the plates [I. Mukaitani, T. Sakamoto, T. Kikuoka, Y. Yamaguchi, H. Tsubakino, Proceedings of the 40th Battery Symposium in Japan, 1999, p. 99]. We have determined that microstructure control with a composition of lead-calcium-tin (Pb-Ca-Sn) alloy is optimal for better performance of the plates [I. Mukaitani, T. Sakamoto, T. Kikuoka, Y. Yamaguchi, H. Tsubakino, Proceedings of the 40th Battery Symposium in Japan, 1999, p. 99]. We developed a "simulation of current collector corrosion elongation" which is a technique of estimating corrosion elongation from the current collector design [I. Mukaitani, K. Hayashi, I. Shimoura, H. Takabayashi, M. Terada, A. Takemasa, I. Takahashi, K. Okamoto, Proceedings of the 44th Battery Symposium in Japan, 2003, p. 652]. Corrosion elongation occurs as the corrosion material layer grows out of the current collector metal. We resolved this problem using generally CAD

  5. Crustal evolution derived from the Izu-Bonin-Mariana arc velocity images

    Science.gov (United States)

    Takahashi, N.; Kodaira, S.; Tatsumi, Y.; Miura, S.; Sato, T.; Yamashita, M.; No, T.; Takahashi, T.; Noguchi, N.; Takizawa, K.; Kaiho, Y.; Kaneda, Y.

    2010-12-01

    The Izu-Bonin-Mariana arc is known as one of typical oceanic island arcs, which has developed by subduction between oceanic crusts producing continental materials. Japan Agency for Marine-Earth Science and Technology has carried out seismic surveys using a multi-channel reflection survey system (MCS) and ocean bottom seismographs (OBSs) in the Izu-Bonin-Mariana (IBM) arc since 2002, and reported these crustal images. As the results, we identified the structural characteristics of whole Izu-Bonin-Mariana arc. Rough structural characteristics are, 1) middle crust with Vp of 6 km/s, 2) upper part of the lower crust with Vp of 6.5-6.8 km/s, 3) lower part of the lower crust with Vp of 6.8-7.5 km/s, and 4) lower mantle velocity beneath the arc crusts. In addition, structural variation along the volcanic front, for example, thickness variation of andesitic layers was imaged and the distributions is consistent with those of rhyolite volcanoes, that is, it suggested that the cause the structural variation is various degree of crustal growth (Kodaira et al., 2007). Moreover, crustal thinning with high velocity lower crust across arc was also imaged, and it is interpreted that such crust has been influenced backarc opening (Takahashi et al., 2009). According to Tatsumi et al. (2008), andesitic middle crust is produced by differentiation of basaltic lower crust and a part of the restites are transformed to the upper mantle. This means that region showing much crustal differentiation has large volume of transformation of dense crustal materials to the mantle. We calculated volume profiles of the lower crust along all seismic lines based on the petrologic model, and compared them with observed real volumes obtained by seismic images. If the real volume of the lower crust is large, it means that the underplating of dense materials to the crustal bottom is dominant rather than transformation of dense materials to the upper mantle. According to obtained profiles to judge if the

  6. The crustal characteristics at syn- and/or post-rifting in eastern Shikoku basin by seismic reflection survey

    Science.gov (United States)

    Yamashita, M.; Takahashi, N.; Kodaira, S.; Takizawa, K.; No, T.; Miura, S.; Kaneda, Y.

    2008-12-01

    Imaging of the arc-backarc transition zone is important in relation to the backarc opening process. Shikoku Basin locates between the Kyushu-Palau Ridge and the Izu-Ogasawara Arc, which is an important area to reveal the opening evolution of the backarc basins as a part of the growth process of the Philippine Sea. The Shikoku Basin was in the backarc rifting and spreading stage during about 30-15 Ma (e.g. Okino et al., 1994). High P-wave velocity lower crust is identified in arc-backarc transition zone by refraction survey using OBSs (Takahashi et al., 2007). Japan Agency for Marine-Earth Science and Technology (JAMSTEC) carried out multi-channel seismic reflection (MCS) survey using 12,000 cu.in. air gun and 5 km streamer with 204 ch hydrophones in the Izu-Ogasawara region since 2004. We extracted and mapped the crustal characteristics from poststack and prestack depth migrated profiles. According to obtained profiles, the deformation structure with share component is recognized in arc-backarc transition zone, which located eastern side of Shikoku Basin from Zenisu Ridge to about 500 km south. The maximum width of this deformation zone is about 100 km. The relative displacement of horizon is little; however, it is strongly deformed from upper crust beneath seafloor. This deformation zone indicates the post- rifting activity in east side of Shikoku Basin. On the other hand, some knolls are indicated along the en- echelon arrangement from Izu-Ogasawara arc. Ishizuka et al. (2003) reported post-rifting volcanism with Miocene age in en-echelon arrangement. A part of these knolls are estimated to penetrate at syn-rifting and/or post-rifting stage in backarc opening. By comparing the both side of arc-backarc transition zone, we elucidate syn- and post-rifting effect in Shikoku Basin. We also carried out high density MCS surveys in Shikoku Basin in order to IODP proposal site for reconstruction of magmatic processes since Oligocene in rear arc. In this survey, we use new

  7. Cancer incidence and novel therapies developed in Japan

    Directory of Open Access Journals (Sweden)

    Masaru Iwasaki

    2012-01-01

    Oncology. JMAJ 54(1: 44–46, 20114.Hildebrandt B, Wust P, Ahlers O, et al. The cellular and molecular basis of hyperthermia. Critical Reviews in Oncology/Hematology 2002; 43(1:33–56.5.Levin WP, Kooy H, Loeffler JS, DeLaney TF. Proton beam therapy. Br J Cancer.2005; 93(8:849-54. 6.Widakowich C, de Castro G Jr, de Azambuja E, Dinh P, Awada A. Review: side effects of approved molecular targeted therapies in solid cancers. Oncologist. 2007; 12(12:1443-55.7.Egawa K. Immuno-cell therapy of cancer in Japan. Anticancer Res. 2004;24(5C:3321-6. 8.Takayama T, Sekine T, Makuuchi M, Yamasaki S, Kosuge T, Yamamoto J, Shimada K, Sakamoto M, Hirohashi S, Ohashi Y, Kakizoe T. Adoptive immunotherapy to lower postsurgical recurrence rates of hepatocellular carcinoma: a randomised trial. Lancet. 2000; 356(9232:802-7. 9.Kimura H, Yamaguchi Y. A phase III randomized study of interleukin-2 lymphokine-activated killer cell immunotherapy combined with chemotherapy or radiotherapy after curative or noncurative resection of primary lung carcinoma. Cancer. 1997;80(1:42-9. 10.Kono K, Takahashi A, Ichihara F, Amemiya H, Iizuka H, Fujii H, Sekikawa T, Matsumoto Y: Prognostic significance of adoptive immunotherapy with tumor-associated lymphocytes in patients with advanced gastric cancer: a randomized trial. Clin Cancer Res. 2002; 8: 1767-71. 11.Fujita K, Ikarashi H, Takakuwa K, Kodama S, Tokunaga A, Takahashi T, Tanaka K. Prolonged disease-free period in patients with advanced epithelial ovarian cancer after adoptive transfer of tumor-infiltrating lymphocytes. Clin Cancer Res. 1995; 1(5:501-7.12.Goto S, Shirotani N, Hatakeyama M, Tagami C, Arakawa H, Kuwata E, Noguchi K, Egawa K. Clinical benefit of non-toxic therapy in patients with advanced cancer (opinion. Anticancer Res. 2002; 22(4:2461-4.

  8. Light tetraquarks and mesons in a DSE/BSE approach

    Energy Technology Data Exchange (ETDEWEB)

    Heupel, Walter

    2015-07-01

    Bound states and their properties are an inherent non-perturbative feature of QCD. Moreover, QCD is a confining theory so that instead of the elementary quarks and gluons themselves, only colourless bound states formed of these elementary particles are directly measurable. One non-perturbative framework to describe QCD are the Dyson-Schwinger equations, which interrelate all Green functions of the theory by an infinite tower of integral equations, and the corresponding Bethe-Salpeter equations that define the bound states of the theory. To reduce the infinite tower to a tractable form, the equations have to be truncated. In this thesis the so-called rainbow ladder' truncation was used that reduces the quark-gluon vertex to the bare vertex and replaces the gluon by an effective modeled one so that the only Green function that has to be solved, is the quark propagator. This truncation preserves the important axial Ward-Takahashi-identity and the Gell-Mann-Oakes-Renner relation. For the effective gluon the Maris-Tandy interaction was used, modeled to reproduce the pion mass and decay constant. Starting from this well-established truncation, the four-body tetraquark Bethe-Salpeter equation was constructed. To solve the tetraquark Bethe-Salpeter equation, a fully covariant basis for the tetraquark amplitude is necessary. Additionally, the basis has to reflect the quantum numbers of the tetraquark and has to fulfill the Pauli principle. The construction of such a basis was performed for all parts of the amplitude: The Dirac-tensor structure, the phase space, the colour and the flavour tensor structure. Upon solving the tetraquark bound state equation, dynamical pion poles in the tetraquark amplitude phase space appeared, reflecting the actual physics that determines the tetraquark: The tetraquark is dominated by two-body correlations which manifest themselves as poles in the phase space. It is especially noteworthy that these two-body correlations in form of poles

  9. Siderophore-mediated oxidation of Ce and fractionation of HREE by Mn (hydr)oxide-coprecipitation and sorption on MnO2: Experimental evidence for negative Ce-anomalies in abiogenic manganese precipitates

    Science.gov (United States)

    Krämer, Dennis; Tepe, Nathalie; Bau, Michael

    2014-05-01

    )oxides (e.g., Tanaka et al., 2010, Loges et al., 2012). Our experimental results demonstrate that biogenic organic ligands such as hydroxamate siderophores, may produce solutions with positive Ce anomaly (Bau et al., 2013) and may even counteract the surface oxidation of Ce on Mn (hydr)oxides. References Bau, M., Tepe, N., Mohwinkel, D., 2013. Siderophore-promoted transfer of rare earth elements and iron from volcanic ash into glacial meltwater, river and ocean water. Earth Planet. Sci. Lett. 364, 30-36. Christenson E. A. and Schijf J. (2011) Stability of YREE complexes with the trihydroxamate siderophore desferrioxamine B at seawater ionic strength. Geochim. Cosmochim. Acta 75, 7047-7062. Loges, A., Wagner, T., Barth, M., Bau, M., Göb, S., and Markl, G. 2012. Negative Ce anomalies in Mn oxides: The role of Ce4+ mobility during water-mineral interaction. Geochimica and Cosmochimica Acta 86, 296-317 Ohta A. and Kawabe I. (2001) REE (III) adsorption onto Mn dioxide (delta-MnO2) and Fe oxyhydroxide: Ce(III) oxidation by delta-MnO2. Geochim. Cosmochim. Acta 65, 695-703. Tanaka K., Tani Y., Takahashi Y., Tanimizu M., Suzuki Y., Kozai N. and Ohnuki T. (2010) A specific Ce oxidation process during sorption of rare earth elements on biogenic Mn oxide produced by Acremonium sp. strain KR21-2. Geochim. Cosmochim. Acta 74, 5463-5477.

  10. Efficacy and safety of paliperidone palmitate three-monthly formulation in East Asian patients with schizophrenia: subgroup analysis of a global, randomized, double-blind, Phase III, noninferiority study

    Directory of Open Access Journals (Sweden)

    Savitz AJ

    2017-08-01

    Full Text Available Adam J Savitz,1 Haiyan Xu,2 Srihari Gopal,1 Isaac Nuamah,2 Paulien Ravenstijn,3 David Hough,1 Maju Mathews,4 Yu Feng,5 Lu Yu,6 Masayoshi Takahashi,7 Dennis Liu,8 Gang Wang,9 Jin-Sang Yoon,10 Jiahn-Jyh Chen11 1Department of Central Nervous System, 2Department of Clinical Biostatistics, Janssen Research & Development, LLC, Titusville, NJ, USA; 3Department of Clinical Pharmacology, Janssen Research & Development, Beerse, Belgium; 4Global Medical Affairs, Neurosciences, Janssen Research & Development, NY, USA; 5Medical Affairs, Neurosciences, Janssen Pharmaceutical Companies of Johnson and Johnson, Singapore; 6Department of Clinical Development, Janssen Research & Development, Beijing, China; 7Department of Central Nervous System, Janssen Pharmaceutical KK, Tokyo, Japan; 8Playford Community Team, Northern Adelaide Local Health Network, Adelaide, SA, Australia; 9National Clinical Research Center for Mental Disorders, Beijing Anding Hospital, Affiliated Capital University of Medical Science, Beijing, China; 10Department of Psychiatry, Chonnam National University Hospital, Gwangju, South Korea; 11Department of Geriatric Psychiatry, Taoyuan Mental Hospital, Taoyuan, Taiwan Objective: To demonstrate the efficacy and safety of paliperidone palmitate three-monthly (PP3M formulation in an East Asian population with schizophrenia by subgroup analysis of a double-blind (DB, multicenter, noninferiority study. Patients and methods: Of 1,429 patients who entered the open-label (OL phase, 510 were East Asian (China: 296 [58%], Japan: 175 [34%], South Korea: 19 [4%] and Taiwan: 20 [4%]. In the 17-week OL phase, patients received paliperidone palmitate once-monthly (PP1M formulation on day 1 (150 mg eq., day 8 (100 mg eq. and once-monthly thereafter (50–150 mg eq., flexible. Following the OL phase, patients (n=344 East Asian entered DB phase and were randomized (1:1 to PP1M (n=174 or PP3M (n=170. Primary efficacy endpoint was the percentage of patients who

  11. Determination of thermal stability of specific biomarker lipids of the freshwater fern Azolla through hydrous pyrolysis

    Science.gov (United States)

    Sap, Merel; Speelman, Eveline N.; Lewan, Michael D.; Sinninghe Damsté, Jaap S.; Reichart, Gert-Jan

    2010-05-01

    , M., Cronin, T. M., Onodera, J., Takahashi, K., Bujak, J. P., Stein, R., van der Burgh, J., Eldrett, J. S., Harding, I. C., Lotter, A. F., Sangiorgi, F., van Konijnenburg-van Cittert, H., de Leeuw, J. W., Matthiessen, J., Backman, J., Moran, K. (2006), Episodic fresh surface waters in the Eocene Arctic Ocean, Nature 441, 606-609. • Speelman, E. N., M. M. L. van Kempen, J. Barke, H. Brinkhuis, G. J. Reichart, A. J. P. Smolders, J. G. M. Roelofs, F. Sangiorgi, J. W. de Leeuw, A. F. Lotter, J. S. Sinnighe Damsté (2009), The Eocene Arctic Azolla bloom: environmental conditions, productivity and carbon drawdown, Geobiology, 7, 155-170. • Speelman, E. N., G.-J. Reichart, J.W. de Leeuw, W. I. C. Rijpstra, Jaap S. Sinnighe Damsté (2009), Biomarker lipids of the freshwater fern Azolla and its fossil counterpart from the Eocene Arctic Ocean, Organic Geochemistry, 40, 628-637.

  12. Conditions of deep magma chamber beneath Fuji volcano estimated from high- P experiments

    Science.gov (United States)

    Asano, K.; Takahashi, E.; Hamada, M.; Ushioda, M.; Suzuki, T.

    2012-12-01

    boundary, shallow level magma chamber is difficult to maintain for long time due to the large stress and deformation. Accordingly, the magma composition of Fuji volcano is buffered by the large AFC magma chamber in the lower crust (Takahashi et al., this conference). Fig.1 SiO2-K2O diagram for Fuji volcano products (diamonds) and volcanoes in Izu-arc. Melt compositional trend obtained by 4 kbar and 7 kbar experiments are shown with arrows.

  13. PREFACE: International Symposium on (e,2e), Double Photoionization and Related Topics & 15th International Symposium on Polarization and Correlation in Electronic and Atomic Collisions

    Science.gov (United States)

    Martin, Nicholas L. S.; deHarak, Bruno A.

    2010-01-01

    44 submitted posters covered recent advances in these topics. These proceedings present papers on 35 of the invited talks. The Local Organizers gratefully acknowledge the financial support of the University of Kentucky College of Arts and Sciences, and the University of Kentucky Department of Physics and Astronomy. We also thank Carol Cotrill, Eva Ellis, Diane Yates, Sarah Crowe, and John Nichols, of the Department of Physics and Astronomy, University of Kentucky for their invaluable assistance in the smooth running of the conferences; Oleksandr Korneta for taking the group photograph; and Emily Martin for helping accompanying persons. Nicholas L S Martin University of Kentucky Bruno A deHarak Illinois Wesleyan University International Scientific Organizing Committee Co-Chairs Don Madison (USA)Klaus Bartschat (USA) Members Lorenzo Avaldi (Italy)Nils Andersen (Denmark) Jamal Berakdar (Germany)Uwe Becker (Germany) Michael Brunger (Australia)Igor Bray (Australia) Greg Childers (USA)Nikolay Cherepkov (Russia) JingKang Deng (China)Albert Crowe (UK) Alexander Dorn (Germany)Danielle Dowek (France) Jim Feagin (USA)Oscar Fojon (Argentina) Nikolay Kabachnik (Russia)Tim Gay (USA) Anatoli Kheifets (Australia)Alexei Grum-Grzhimailo (Russia) George King (UK)Friedrich Hanne (Germany) Tom Kirchner (Germany)Alan Huetz (France) Azzedine Lahmam-Bennani (France)Morty Khakoo (USA) Julian Lower (Australia)Birgit Lohmann (Australia) William McCurdy (USA)Bill McConkey (Canada) Andrew Murray (UK)Rajesh Srivastava (India) Bernard Piraux (Belgium)Al Stauffer (Canada) Tim Reddish (Canada)Jim Williams (Australia) Roberto Rivarola (Argentina)Akira Yagishita (Japan) Michael Schulz (USA)Peter Zetner (Canada) Anthony Starace (USA)Joachim Ullrich (Germany) Giovanni Stefani (Italy)Erich Weigold (Australia) Masahiko Takahashi (Japan) Conference photograph

  14. CYP2D6 phenotypes are associated with adverse outcomes related to opioid medications

    Directory of Open Access Journals (Sweden)

    St Sauver JL

    2017-07-01

    Full Text Available Jennifer L St Sauver,1,2 Janet E Olson,1,3 Veronique L Roger,1,2,4 Wayne T Nicholson,5 John L Black III,3,6 Paul Y Takahashi,7 Pedro J Caraballo,7 Elizabeth J Bell,2 Debra J Jacobson,1,2 Nicholas B Larson,1 Suzette J Bielinski,1,3 1Department of Health Sciences Research, 2Kern Center for the Science of Health Care Delivery, Mayo Clinic, Rochester, 3Center for Individualized Medicine, 4Department of Cardiovascular Diseases, 5Department of Anesthesiology and Perioperative Medicine, 6Department of Laboratory Medicine and Pathology, 7Department of Primary Care Internal Medicine, Mayo Clinic, Rochester, MN, USA Background: Variation in the CYP2D6 gene may affect response to opioids in both poor and ultrarapid metabolizers, but data demonstrating such associations have been mixed, and the impact of variants on toxicity-related symptoms (e.g., nausea is unclear. Therefore, we examined the association between CYP2D6 phenotype and poor pain control or other adverse symptoms related to the use of opioids in a sample of primary care patients.Materials and methods: We identified all patients in the Mayo Clinic RIGHT Protocol who were prescribed an opioid medication between July 01, 2013 and June 30, 2015, and categorized patients into three phenotypes: poor, intermediate to extensive, or ultrarapid CYP2D6 metabolizers. We reviewed the electronic health record of these patients for indications of poor pain control or adverse symptoms related to medication use. Associations between phenotype and outcomes were assessed using Chi-square tests and logistic regression.Results: Overall, 257 (25% of RIGHT Protocol participants patients received at least one opioid prescription; of these, 40 (15% were poor metabolizers, 146 (57% were intermediate to extensive metabolizers, and 71 (28% were ultrarapid metabolizers. We removed patients that were prescribed a CYP2D6 inhibitor medication (n=38. After adjusting for age and sex, patients with a poor or ultrarapid

  15. Prediction of critical illness in elderly outpatients using elder risk assessment: a population-based study

    Directory of Open Access Journals (Sweden)

    Biehl M

    2016-06-01

    Full Text Available Michelle Biehl,1 Paul Y Takahashi,2 Stephen S Cha,3 Rajeev Chaudhry,2 Ognjen Gajic,1 Bjorg Thorsteinsdottir2 1Division of Pulmonary and Critical Care Medicine, Department of Medicine, 2Division of Primary Care Internal Medicine, 3Health Sciences Research, Mayo Clinic, Rochester, MN, USA Rationale: Identifying patients at high risk of critical illness is necessary for the development and testing of strategies to prevent critical illness. The aim of this study was to determine the relationship between high elder risk assessment (ERA score and critical illness requiring intensive care and to see if the ERA can be used as a prediction tool to identify elderly patients at the primary care visit who are at high risk of critical illness. Methods: A population-based historical cohort study was conducted in elderly patients (age >65 years identified at the time of primary care visit in Rochester, MN, USA. Predictors including age, previous hospital days, and comorbid health conditions were identified from routine administrative data available in the electronic medical record. The main outcome was critical illness, defined as sepsis, need for mechanical ventilation, or death within 2 years of initial visit. Patients with an ERA score of 16 were considered to be at high risk. The discrimination of the ERA score was assessed using area under the receiver operating characteristic curve. Results: Of the 13,457 eligible patients, 9,872 gave consent for medical record review and had full information on intensive care unit utilization. The mean age was 75.8 years (standard deviation ±7.6 years, and 58% were female, 94% were Caucasian, 62% were married, and 13% were living in nursing homes. In the overall group, 417 patients (4.2% suffered from critical illness. In the 1,134 patients with ERA >16, 154 (14% suffered from critical illness. An ERA score ≥16 predicted critical illness (odds ratio 6.35; 95% confidence interval 3.51–11.48. The area under the

  16. Evaluation of thermobarometry for spinel lherzolite fragments in alkali basalts

    Science.gov (United States)

    Ozawa, Kazuhito; Youbi, Nasrrddine; Boumehdi, Moulay Ahmed; McKenzie, Dan; Nagahara, Hiroko

    2017-04-01

    various method of estimation of ascent rate of mantle fragments in kimberlite and alkali basalt; one based on fluid dynamics of transportation of entrapped fragments by giving the maximum size and viscosity of magma as a minimum estimate (Spera, 1980) and the other by coupling depth of fragment residence before the entrapment in a magma and time scale of heating by the magma. The depth of entrapment, however, is the least known parameter for spinel lherzolite. Because of nearly adiabatic ascent of magmas loaded with solid fragments, all the fragments underwent the same heating and decompression history with difference in entrapment depth and thus heating duration, from which the depth of their residence just before the extraction may be estimated if ascent rate is known. Therefore, extent of chemical and textural modification induced by heating and decompression may provide independent test for pressure estimation. We have used several reactions for this purpose: (1) Mg-Fe exchange reaction between spinel and olivine (Ozawa, 1983; 1984), (2) Ca zoning in olivine (Takahashi, 1980), (3) partial dissolution of clinopyroxene, (4) partial dissolution of spinel, and (5) formation of melt frozen as glass, which is related to (3) and (4). The depth of melt generation is constrained to be deeper than 70km by modeling the trace element compositions of the host magmas using the methods of McKenzie and O'Nions (1991) and data from El Azzouzi et al. (2010). The host magmas can be produced by melting the convecting upper mantle without requirement of any input from the continental lithosphere. This is consistent with the positive gravity anomalies in the NW Africa showing shallow upwelling in this region allowing decompressional melting owing to the thinner lithosphere in the Middle Atlas.

  17. Anglo-French Collaboration in the Nuclear Sector: The Human, Social and Ethical Dimensions. Graduate seminar, Maison Francaise d'Oxford, Monday 15 May 2017

    International Nuclear Information System (INIS)

    Denoun, Martin; Tsuchiya, Miyuki; Degremont-Dorville, Marie; Bouillet, Jeremy; Deront, Eva; Kim, Tae-Hoon; Kobylka, Krzysztof; Nithesh, Antony; Defard, Camille; Giachetti, Charles; Nivole, Audrey; Takahashi, Makoto; Pini, Paul-Etienne; Lloyd, Clara

    2017-05-01

    organisation directly engaged in the sector. This document brings together the abstracts of the presentations given at this seminar, as well as a synthesis in French for the French Society of Nuclear Energy (SFEN). List of presentations: 1 - Global warming and nuclear future (Denoun, Martin); 2 - Governing the energy policy: the pursuit of nuclear energy through the 'energy transition' notion in France (Tsuchiya, Miyuki); 3 - What can we learn from decentralized energy systems in France? (Degremont-Dorville, Marie); 4 - Energy consumption behaviours in France: patterns and main trends (Bouillet, Jeremy); 5 - National social and economic effects of the European framework (Deront, Eva); 6 - The great nuclear divergence: how France overtook Britain in the civil nuclear stage (Kim, Tae-Hoon); 7 - Importance of risk perception and its impacts in the nuclear industry (Kobylka, Krzysztof; Nithesh, Antony); 8 - Nuclear risk perception among the French civil society (Defard, Camille; Giachetti, Charles; Nivole, Audrey); 9 - Framing nuclear power: how the Fukushima Daiichi nuclear power plant disaster has become understood as an issue of class, gender and geography (Takahashi, Makoto); 10 - Framing the regional socio-economic impacts of nuclear power plant decommissioning: structural underpinnings and empirical displays of territorial resilience (Pini, Paul-Etienne); 11 - Manufacture and Construction of Small Modular Reactors (Lloyd, Clara)

  18. Air-Sea CO2 fluxes in the Atlantic as measured during boreal spring and autumn

    Directory of Open Access Journals (Sweden)

    A. F. Ríos

    2010-05-01

    Full Text Available A total of fourteen hydrographic cruises from 2000 to 2008 were conducted during the spring and autumn seasons between Spain and the Southern Ocean under the framework of the Spanish research project FICARAM. The underway measurements were processed and analysed to describe the meridional air-sea CO2 fluxes (FCO2 in the covered sector of the Atlantic Ocean. The data has been grouped into different biogeochemical oceanographic provinces based on thermohaline characteristics. The spatial and temporal distributions of FCO2 followed expected distributions and annual trends reproducing the recent climatological ΔfCO2 estimations with a mean difference of −3 ± 18 μatm (Takahashi et al., 2009. The reduction in the CO2 saturation along the meridional FICARAM cruises represented an increase of 0.02 ± 0.14 mol m−2 yr−1 in the ocean uptake of atmospheric CO2. The subtropical waters in both Hemispheres acted as a sink of atmospheric CO2 during the successive spring seasons and as a source in autumn. The coarse reduction of the ocean uptake of atmospheric CO2 observed in the North Atlantic Ocean was linked to conditions of negative phase of the North Atlantic Oscillation that prevailed during the FICARAM period. Surface waters in the North Equatorial Counter Current revealed a significant long-term decrease of sea surface salinity of −0.16 ± 0.01 yr−1 coinciding with a declination of −3.5 ± 0.9 μatm yr−1 in the air–sea disequilibrium of CO2 fugacity and a rise of oceanic CO2 uptake of −0.09 ± 0.03 mol m−2 yr−1. The largest CO2 source was located in the equatorial upwelling system. These tropical waters that reached emissions of 0.7 ± 0.5 and 1.0 ± 0.7 mol m−2 y−1 in spring and autumn, respectively, showed an interannual warming of 0.11 ± 0.03 °C yr−1 and a wind speed decrease of −0.58 ± 0.14 m s−1 yr−1 in spring cruises which suggest the weakening of upwelling events associated with warm El Niño – Southern

  19. Using Green's Functions to initialize and adjust a global, eddying ocean biogeochemistry general circulation model

    Science.gov (United States)

    Brix, H.; Menemenlis, D.; Hill, C.; Dutkiewicz, S.; Jahn, O.; Wang, D.; Bowman, K.; Zhang, H.

    2015-11-01

    The NASA Carbon Monitoring System (CMS) Flux Project aims to attribute changes in the atmospheric accumulation of carbon dioxide to spatially resolved fluxes by utilizing the full suite of NASA data, models, and assimilation capabilities. For the oceanic part of this project, we introduce ECCO2-Darwin, a new ocean biogeochemistry general circulation model based on combining the following pre-existing components: (i) a full-depth, eddying, global-ocean configuration of the Massachusetts Institute of Technology general circulation model (MITgcm), (ii) an adjoint-method-based estimate of ocean circulation from the Estimating the Circulation and Climate of the Ocean, Phase II (ECCO2) project, (iii) the MIT ecosystem model "Darwin", and (iv) a marine carbon chemistry model. Air-sea gas exchange coefficients and initial conditions of dissolved inorganic carbon, alkalinity, and oxygen are adjusted using a Green's Functions approach in order to optimize modeled air-sea CO2 fluxes. Data constraints include observations of carbon dioxide partial pressure (pCO2) for 2009-2010, global air-sea CO2 flux estimates, and the seasonal cycle of the Takahashi et al. (2009) Atlas. The model sensitivity experiments (or Green's Functions) include simulations that start from different initial conditions as well as experiments that perturb air-sea gas exchange parameters and the ratio of particulate inorganic to organic carbon. The Green's Functions approach yields a linear combination of these sensitivity experiments that minimizes model-data differences. The resulting initial conditions and gas exchange coefficients are then used to integrate the ECCO2-Darwin model forward. Despite the small number (six) of control parameters, the adjusted simulation is significantly closer to the data constraints (37% cost function reduction, i.e., reduction in the model-data difference, relative to the baseline simulation) and to independent observations (e.g., alkalinity). The adjusted air-sea gas

  20. Cosmogenic nuclide shielding corrections determined via MCNPX radiation transport and spallation cross sections

    Science.gov (United States)

    Argento, D.; Reedy, R. C.; Stone, J. O.

    2011-12-01

    tabulated throughout the atmosphere. These results are then folded with estimated cross sections [6,7] to produce nuclide production potential as a function of both angle as well as altitude. Initial results indicate a change in the angular distribution of the production potential with altitude. Final results and discussion will be presented at the conference. This work was supported by the NSF CRONUS-Earth project. References [1] T. J. Dunai. Cosmogenic nuclides: principles, concepts and applications in the Earth Surface Sciences, First (Cambridge University Press, Cambridge, 2010), [2] D. Lal, Annual Review of Earth Planet Science. 16. (1988) 355-388 [3] J. Gosse and F. Phillips, Quaternary Science Reviews. 20. (2001) 1475-1560 [4] N. C. Conversi and P. Rothwell, Il Nuovo Cimento. 12. (1954) 191-210 [5] E. Heidbreder, K. Pinkau, C. Reppin and V. Schönfelder, Journal of Geophysical Research. 76. (1971) 2905 [6] K. Nishiizumi, K. C. Welten, H. Matsumura, M. Caffee, K. Ninomiya, T. Omoto, R. Nakagaki, T. Shima, N. Takahashi, S. Sekimoto, H. Yashima, S. Shibata, K. Bajo, K. Nagao, N. Kinoshita, M. Imamura, J. Sisterson and A. Shinohara, Geochimica et Cosmochimica Acta. 73. (2009) A945 [7] R. C. Reedy. personal communication

  1. EDITORIAL: Selected papers from the 19th International Colloquium on Magnetic Films and Surfaces

    Science.gov (United States)

    Miyazaki, T.; Inoue, J.

    2007-03-01

    organized by Professors Shinjo and Maekawa. The city of Sendai, where the 19th ICMFS was held, is the historical place for magnetism research in Japan. Kotaro Honda, who was a professor of Tohoku University in Sendai, laid the foundation for this research in Japan, and he was followed by Siji Kaya, Haraku Masumoto and Minoru Takahashi, also professors of Tohoku University. They continued the spirit founded by Honda and contributed greatly to the progress of research in magnetism. Therefore, it was a great pleasure for the organizers to have the ICMFS Conference come to Sendai. The 19th ICMFS Colloquium was co-hosted by the Japanese Society for the Promotion of Science and the Foundation Advanced Technology Institute and supported by the Japanese Society of Applied Physics, the Magnetics Society of Japan, the Physical Society of Japan and the Japan Institute of Metals. This colloquium was also jointly held with the Conference on the Physics and Application of Spin-related Phenomena in Semiconductors (PASPS). All the members of the Organizing Committee would like to thank the members of the International Advisory Committee for scientific and administrative advice, and the Sendai Tourism and Convention Bureau, the Iwatani Naoji Foundation, the Asahi Glass Foundation and the Intelligent Cosmos Academic Foundation for their financial support. Without doubt, the Colloquium was a great success overall. The smooth and excellent running of the Colloquium would not have been possible without the assistance of the Program Committee and local members of the Colloquium.

  2. Analysis of Patient Narratives in Disease Blogs on the Internet: An Exploratory Study of Social Pharmacovigilance.

    Science.gov (United States)

    Matsuda, Shinichi; Aoki, Kotonari; Tomizawa, Shiho; Sone, Masayoshi; Tanaka, Riwa; Kuriki, Hiroshi; Takahashi, Yoichiro

    2017-02-24

    observed frequently in the ADR database. We also confirmed the feasibility of using visualization techniques to obtain insights from unstructured text-based tōbyōki blog data. Word clouds described the characteristics of each disorder, such as "sleeping" and "anxiety" in depression and "pain" and "painful" in RA. Pharmacovigilance should maintain a strong focus on patients' actual experiences, concerns, and outcomes, and this approach can be expected to uncover hidden adverse event signals earlier and to help us understand adverse events in a patient-centered way. Patient-generated tōbyōki blogs in the TOBYO database showed unique characteristics that were different from the data in existing sources generated by health care professionals. Analysis of tōbyōki blogs would add value to the assessment of disorders with a high prevalence in women, psychiatric disorders in which subjective symptoms have important clinical meaning, refractory disorders, and other chronic disorders. ©Shinichi Matsuda, Kotonari Aoki, Shiho Tomizawa, Masayoshi Sone, Riwa Tanaka, Hiroshi Kuriki, Yoichiro Takahashi. Originally published in JMIR Public Health and Surveillance (http://publichealth.jmir.org), 24.02.2017.

  3. Realizing Controllable Quantum States

    Science.gov (United States)

    Takayanagi, Hideaki; Nitta, Junsaku

    -T[stmbol] superconducting thin films with special arrangements of antidots / R. Wöerdenweber, P. Dymashevski and V. R. Misko. Quantum tunneling of relativistic fluxons / K. Konno et al. -- 6. Quantum information processing in solid states. Qubit decoherence by low-frequency noise / K. Rabenstein, V. A. Sverdlov and D. V. Averin. A critique of two-level approximation / K. Savran and T. Hakioǧlu. Josephson arrays as quantum channels / A. Romito, C. Bruder and R. Fazio. Fighting decoherence in a Josephson qubit circuit / E. Collin et al. Fast switching current detection at low critical currents / J. Walter, S. Corlevi and D. Haviland. Asymmetric flux bias for coupled qubits to observe entangled states / Y. Shimazu. Interaction of Josephson qubits with strong QED cavity modes: dynamical entanglement transfer and navigation / G. Falci et al. Controlling decoherence of transported quantum spin information in semiconductor spintronics / B. Nikolic and S. Souma. Decoherence due to telegraph and 1/f noise in Josephson qubits / E. Paladino et al. Detection of entanglement in NMR quantum information processing / R. Rahimi, K. Takeda and M. Kitagawa. Multiphoton absorption and SQUID switching current behaviors in superconducting flux-qubit experiments / H. Takayanagi et al. -- 7. Quantum information theory. Quantum query complexities / K. Iwama. A construction for non-stabilizer Clifford codes / M. Hagiwara and H. Imai. Quantum pushdown automata that can deterministically solve a certain problem / Y. Murakami et al. Trading classical for quantum computation using indirection / R. van Meter. Intractability of the initial arrangement of input data on qubits / Y. Kawano et al. Reversibility of modular squaring / N. Kunihiro, Y. Takahashi and Y. Kawano. Study of proximity effect at D-wave superconductors in quasiclassical methods / Y. Tanuma, Y. Tanaka and S. Kashiwaya -- 8. Spintronics in band electrons. Triplet superconductors: exploitable basis for scalable quantum computing / K. S. Wood et al. Spin

  4. Proceedings of the 8th International Symposium on Foundations of Quantum Mechanics in the Light of New Technology

    Science.gov (United States)

    Ishioka, Sachio; Fujikawa, Kazuo

    2006-06-01

    Preface -- Committees -- Opening address / H. Fukuyama -- Welcoming address / N. Osakabe -- Special lecture. Albert Einstein: opportunity and perception / C. N. Yang -- Quantum information and entanglement. Quantum optics with single atoms and photons / H. J. Kimble. Quantum information system experiments using a single photon source / Y. Yamamoto. Quantum communication and quantum computation with entangled photons / A. Zeilinger. High-fidelity quantum teleportation and a quantum teleportation network for continuous variables / N. Takei, A. Furusawa. Long lived entangled states / H. Häffner ... [et al.]. Quantum non-locality using tripartite entanglement with non-orthogonal states / J. V. Corbett, D. Home. Quantum entanglement and wedge product / H Heydari. Analysis of the generation of photon pairs in periodically poled lithium niobate / J. Söderholm ... [et al.]. Generation of entangled photons in a semiconductor and violation of Bell's inequality / G. Oohata, R. Shimizu, K. Edamatsu -- Quantum computing. Decoherence of a Josephson junction flux qubit / Y. Nakamura ... [et al.]. Spectroscopic analysis of a candidate two-qubit silicon quantum computer in the microwave regime / J. Gorman, D. G. Hasko, D. A. Williams. Berry phase detection in charge-coupled flux-qubits and the effect of decoherence / H. Nakano ... [et al.]. Locally observable conditions for the successful implementation of entangling multi-qubit quantum gates / H. F. Hofmann, R. Okamoto, S. Takeuchi. State control in flux qubit circuits: manipulating optical selection rules of microwave-assisted transitions in three-level artificial atoms / Y.-X. Liu ... [et al.]. The effect of local structure and non-uniformity on decoherence-free states of charge qubits / T. Tanamoto, S. Fujita. Entanglement-assisted estimation of quantum channels / A. Fujiwara. Superconducting quantum bit with ferromagnetic [symbol]-Junction / T. Yamashita, S. Takahashi, S. Maekawa. Generation of macroscopic Greenberger

  5. Hurdles overcome in technology transfer for AIET and Positive outcome in Indian patients

    Directory of Open Access Journals (Sweden)

    Dedeepiya V

    2012-01-01

    experienced. An increase in awareness about this least toxic method of Cancer treatment among physicians and the public for an early referral is necessary. Further studies on prevention of cancer using in vitro expanded autologous immune cells are underway. References: 1.Takayama T, Sekine T, Makuuchi M, Yamasaki S, Kosuge T, Yamamoto J, Shimada K, Sakamoto M, Hirohashi S, Ohashi Y, Kakizoe T. Adoptive immunotherapy to lower postsurgical recurrence rates of hepatocellular carcinoma: a randomised trial. Lancet. 2000 ;356(9232:802-7. 2.Kimura H, Yamaguchi Y. A phase III randomized study of interleukin-2 lymphokine-activated killer cell immunotherapy combined with chemotherapy or radiotherapy after curative or noncurative resection of primary lung carcinoma. Cancer. 1997;80(1:42-9. 3.Kono K, Takahashi A, Ichihara F, Amemiya H, Iizuka H, Fujii H, Sekikawa T, Matsumoto Y: Prognostic significance of adoptive immunotherapy with tumor-associated lymphocytes in patients with advanced gastric cancer: a randomized trial. Clin Cancer Res. 2002; 8 : 1767-71. 4.Fujita K, Ikarashi H, Takakuwa K, Kodama S, Tokunaga A, Takahashi T, Tanaka K. Prolonged disease-free period in patients with advanced epithelial ovarian cancer after adoptive transfer of tumor-infiltrating lymphocytes. Clin Cancer Res. 1995;1(5:501-7.5.Sivaraman G, Pandian A, Baskar S, Senthil KR, Senthilnagarajan R, Dedeepiya V, Abraham S. Autologous Immune Enhancement therapy for advanced carcinoma of pancreas a case report. PASRM 2008-004. J Stem Cells Regen Med. 2008; 4(1:136.Damodar S, Terunuma H , Sheriff AK , Farzana L , Manjunath S , Senthilkumar R , Shastikumar G , Abraham S , Wang FS. Autologous Immune Enhancement Therapy (AIET for a Case of Acute Myeloid Leukemia (AML - Our Experience. PASRM 2006-001. J Stem Cells Regen Med. 2006, 1(1: 40-417.Takada M, Terunuma H, Deng X, Dewan MZ, Saji S, Kuroi K, Yamamoto N, Toi M. Refractory lung metastasis from breast cancer treated with multidisciplinary therapy including an

  6. PREFACE: 11th IAEA Technical Meeting on H-mode Physics and Transport Barriers

    Science.gov (United States)

    Takizuka, Tomonori

    2008-07-01

    and Fusion Center, USA) F Ryter (Max-Plank-Institut für Plasmaphysik, Germany) H Saimaru (University of Tsukuba, Japan) R Sakamoto (National Institute for Fusion Science, Japan) Y Sakamoto (Japan Atomic Energy Agency, Japan) M Sasaki (University of Tokyo, Japan) Y Shi (Institute of Plasma Physics, Chinese Academy of Science, China) A Shimizu (National Institute for Fusion Science, Japan) T Shimozuma (National Institute for Fusion Science, Japan) P B Snyder (General Atomics, USA) C Suzuki (National Institute for Fusion Science, Japan) H Takahashi (National Institute for Fusion Science, Japan) Y Takahashi (Nagoya University, Japan) Y Takeiri (National Institute for Fusion Science, Japan) H Takenaga (Japan Atomic Energy Agency, Japan) M Takeuchi (Nagoya University, Japan) T Takizuka (Japan Atomic Energy Agency, Japan) N Tamura (National Institute for Fusion Science, Japan) K Tanaka (National Institute for Fusion Science, Japan) S Tokuda (Japan Atomic Energy Agency, Japan) S Tokunaga (Kyushu University, Japan) G Turri (Centre de Recherches en Physique des Plasmas, EPFL, Switzerland) H Urano (Japan Atomic Energy Agency, Japan) H Utoh (Tohok University, Japan) K Uzawa (Kyoto University, Japan) M Valovic (EURATOM/UKAEA Fusion Association, UK) L Vermare (Max-Plank-Institut für Plasmaphysik, Germany) F Watanabe (Nagoya University, Japan) M Yagi (Kyushu University, Japan) Y Yamaguchi (University of Tsukuba, Japan) K Yamazaki (Nagoya University, Japan) M Yokoyama (National Institute for Fusion Science, Japan) M Yoshida (Japan Atomic Energy Agency, Japan) M Yoshinuma (National Institute for Fusion Science, Japan)

  7. Non-Linearity of dose-effect relationship on the example of cytogenetic effects in plant cells at low level exposure to ionising radiation

    International Nuclear Information System (INIS)

    Oudalova, Alla; Geras'kin, Stanislav; Dikarev, Vladimir; Dikareva, Nina; Chernonog, Elena; Copplestone, David; Evseeva, Tatyana

    2006-01-01

    -particles [Nagasawa and Little, 1992; Mothersill et al., 1995]. Other phenomena including genomic instability, low-dose hypersensitivity, and increased radiation resistance effects are also under study [Marples et al., 1997; Kadhim et al., 2004; Bonner, 2004]. The nonlinearity of the dose-effect relationship with low level exposures has been demonstrated in a number of studies where chromosome aberrations were considered as the endpoint of interest. For example, the number of radiation-induced dicentrics in human peripheral blood lymphocytes found in [Pohl-Ruling et al., 1983; Lloyd et al., 1988, 1992] did not exceed the control level at doses below 40 mGy, with some experimental points lying significantly below control values. Essential deviations of chromosome aberrations appearance from linearity in mammals were also shown at higher doses of 100-300 mGy [Luchnik and Sevankaev, 1976; Takahashi et al., 1982]. In other species, deviations of cytogenetic effect induced by low doses from linearity have also been reported. For example, the dose response for cytogenetic effects in Chinese hamster fibroblasts and Vicia faba germs at doses from 0 to 2.5 Gy was shown to be non linear with a plateau at low doses by [Zaichkina et al., 1992]. Dose-effect curves on chromosome aberrations in root meristem cells of Pisum sativum plantlets in the dose range of 0-10 Gy also showed non-linear responses with a plateau for doses up to 1 Gy [Zaka et al., 2002]. However the available information on dose-effect relationships at low doses for non-human species is scarce despite its importance. In their natural environment, some non-human species may be at a higher risk of impact than humans because of differences in ecological niches occupied. [Geras'kin et.al., 2003]. Currently, radiation protection of the environment and maintenance of ecosystem sustainability is of a special concern. and the development of a harmonized approach to human and biota protection has been recognized as a challenge for modern

  8. Baryon-Baryon Interactions ---Nijmegen Extended-Soft-Core Models---

    Science.gov (United States)

    Rijken, T. A.; Nagels, M. M.; Yamamoto, Y.

    options for the ESC-model. In particularly in ESC08 with single-sets of parameters excellent fits were obtained for the NN- and YN-data. For example, in the case of ESC08a'' we have: (i) For the selected 4233 NN-data with energies 0 ≤ T_{lab} ≤ 350 MeV, excellent results were obtained having chi(2/N_{data}) = 1.094. (ii) For the usual set of 35 YN-data and 3 Sigma(+p) cross-sections from a recent KEK-experiment E289 [H. Kanda et al., AIP Conf. Proc. 842 (2006), 501; H. Kanda, Measurement of the cross sections of Sigma(=p) elastic scattering, Ph. D. thesis, Department of Physics, Faculty of Science, Kyoto University, March 2007] the fit has chi(2}/YN_{data) ≈ 0.83. (iii) For YY there is a weak LambdaLambda-interaction, which successfully matches with t he Nagara-event [H. Takahashi et al., Phys. Rev. Lett. 87 (2001), 212502]. (iv) The nuclear Sigma and Xi well-dephts satisfy U_Sigma > 0 and U_Xi < 0. The predictions for the S = -2 (LambdaLambda, Xi N, LambdaSigma, SigmaSigma)-channels are the occurrences of an S = -2 bound states in the Xi N((3S_1-^3D_1,) I = 0,1)-channels.

  9. Safety in GPR prospecting: a rarely-considered issue

    Science.gov (United States)

    Persico, Raffaele; Pajewski, Lara; Trela, Christiane; Carrick Utsi, Erica

    2016-04-01

    Optical Society of America Part A, vol. 19, n. 12, pp. 2424-2428, December 2002. [3] IAGC Land Geophysical Safety Manual, Int. Association of Geophysical Contractors, 2012. [4] Recommendations for the Safety of People and Instruments in Ground-Penetrating Radar and Near-Surface Geophysical Prospecting, R.Persico, A. Provenzano, C. Trela, M. Sato, K. Takahashi, S. Arcone, S. Koppenjan, L. Stolarczyk, E. C. Utsi, S. Ebihara, K. Wada, E. Pettinelli, L. Pajewski, EAGE, 2015.

  10. On the Current Thermal State of Mars.

    Science.gov (United States)

    Grott, M.; Breuer, D.

    2008-09-01

    .7. As a comparison, the solidus and liquidus of peridotite are also given. The minimum temperature difference between mantle temperature and solidus is ˜250 K, not allowing for partial mantle melting. Results: Fig. 2 shows contour plots of the elastic thickness Te as a function of the fraction of radiogenic elements in the crust ? and the fraction of radiogenic elements with respect to the reference model ? [4] for (a) a wet mantle rheology and ?0 = 1019 Pa s and (c) a dry mantle rheology and ?0 = 1021 Pa s. Large elastic thicknesses require a small bulk concentration of radioactive elements ? or a large concentration of these elements in the crust ?. The gray areas in Fig.2 correspond to parameter combinations which satisfy the constrains given by Te > 300 km. Fig. 2 also shows contour plots of the minimum tempera- ture difference ?T as a function ? and ? for (b) wet and (d) dry mantle rheologies. Small ?T requires a large bulk concentration of radioactive elements ? or a small concentration of these elements in the crust ?. The gray areas correspond to parameter combinations which satisfy the constrains given by ?T 300 km and ?T content and this effect should be incorporated into the models as a next step. Together, these effects will possibly allow for combinations of parameters ? and ? which satisfy the elastic thickness and partial melt constrains. Also, for the thermal models presented here, viscoelastic relaxation calculations should be carried out. References: [1] M.A.Wieczorek, Icarus, 10.1016/ j.icarus. 2007.10.026 (2008). [2] R.J. Phillips et al., Science 320, 5880, 1182 (2008) [3] M. Grott, D. Breuer, Icarus 193, 503 (2008). [4] H. Wänke and G. Dreibus, Philos. Trans. R. Soc. London Ser. A 349, 285 (1994). [5] G. Neukum et al., Nature 432, 971 (2004). [6] E. Takahashi, J. Geophys. Res. 95, B10, 1594115954 (1990). [7] S. Schumacher, D. Breuer, Geophys. Res. Lett., 34, 14, L14202 (2007) [8] E. Pettinelli et al, J. Geophyss Res. 108, E4, 101, 8029 (2003)

  11. Pursuing nuclear energy with no nuclear contamination - from neutron flux reactor to deuteron flux reactor

    International Nuclear Information System (INIS)

    Li, X. Z.; Wei, Q. M.; Liu, B.; Zhu, X. G.; Ren, S. L.

    2007-01-01

    follows: (1) Selective Resonant tunneling model has predicted 3-deuteron fusion which has been found in experiments [6, 7] as well. The reasonable inference is the neutrino emission from the metal hydrides. The feasibility of detection of this neutrino is discussed based on the information from the KamLAND neutrino detector in Japan. (2) Nano-meter technique should be used to increase the deuterium flux through the palladium surface. (3) Gas-discharge tube in combination with optical monochrometer would be the suitable experiment at the current funding level. (4) Negative feed-back should be used to solve the problem of the reproducibility; then, based on the deuteron flux a self-sustaining reactor would be feasible. References [1]. Xing Z. Li, Jian Tian, Ming Y. Mei and Chong X. Li, 'Sub-barrier Fusion and Selective Resonant Tunneling,' Phys. Rev., C 61, 024610 (2000) [2]. Xing Z. Li, Bin Liu, Si Chen, Qing Ming Wei, and Heinrich Hora, 'Fusion cross-sections for inertial fusion energy,' Laser and Particle Beam, 22,469 (2004) [3]. G. Fralick , et al., 'Results of an Attempt to Measure Increased Rates of the Reaction D +D--- 3 He + n in a Nonelectrochemical Cold Fusion Experiment,' NASA Technical Memorandum 102430 (1989) [4]. Xing Z. Li, et al., 'Correlation between abnormal deuterium flux and heat flow in a D/Pd system,' J. Phys. D: Appl. Phys. 36 3095-3097, (2003) [5]. Y. Iwamura, et al., 'Elemental Analysis of Pd Complexes: Effects of D 2 gas permeation, 'Jpn. J. Appl. Phys., 41 4642 (2002) [6]. J. Kasagi, et al., 'Energetic Protons and Alpha Particles Emitted in 150-keV Deuteron Bombardment on Deuterated Ti,' J. Phys. Soc. Japan, 64 (3), 778 (1995) [7]. A. Takahashi, et al., 'Anomalous enhancement of three-body deuteron fusion in titanium deuteride with low-energy D + beam implantation,' Fusion Technol., 34, 256 (1998)

  12. Non-Linearity of dose-effect relationship on the example of cytogenetic effects in plant cells at low level exposure to ionising radiation

    Energy Technology Data Exchange (ETDEWEB)

    Oudalova, Alla; Geras' kin, Stanislav; Dikarev, Vladimir; Dikareva, Nina; Chernonog, Elena [Russian Institute of Agricultural Radiology and Agroecology, RIARAE, 249032 Obninsk (Russian Federation); Copplestone, David [Environment Agency, Millbank Tower, 25th. Floor, 21/24 Millbank, London, SW1P 4XL (United Kingdom); Evseeva, Tatyana [Institute of Biology, Kommunisticheskaya st., 28 Syktyvkar 167610, Komi Republic (Russian Federation)

    2006-07-01

    alpha-particles [Nagasawa and Little, 1992; Mothersill et al., 1995]. Other phenomena including genomic instability, low-dose hypersensitivity, and increased radiation resistance effects are also under study [Marples et al., 1997; Kadhim et al., 2004; Bonner, 2004]. The nonlinearity of the dose-effect relationship with low level exposures has been demonstrated in a number of studies where chromosome aberrations were considered as the endpoint of interest. For example, the number of radiation-induced dicentrics in human peripheral blood lymphocytes found in [Pohl-Ruling et al., 1983; Lloyd et al., 1988, 1992] did not exceed the control level at doses below 40 mGy, with some experimental points lying significantly below control values. Essential deviations of chromosome aberrations appearance from linearity in mammals were also shown at higher doses of 100-300 mGy [Luchnik and Sevankaev, 1976; Takahashi et al., 1982]. In other species, deviations of cytogenetic effect induced by low doses from linearity have also been reported. For example, the dose response for cytogenetic effects in Chinese hamster fibroblasts and Vicia faba germs at doses from 0 to 2.5 Gy was shown to be non linear with a plateau at low doses by [Zaichkina et al., 1992]. Dose-effect curves on chromosome aberrations in root meristem cells of Pisum sativum plantlets in the dose range of 0-10 Gy also showed non-linear responses with a plateau for doses up to 1 Gy [Zaka et al., 2002]. However the available information on dose-effect relationships at low doses for non-human species is scarce despite its importance. In their natural environment, some non-human species may be at a higher risk of impact than humans because of differences in ecological niches occupied. [Geras'kin et.al., 2003]. Currently, radiation protection of the environment and maintenance of ecosystem sustainability is of a special concern. and the development of a harmonized approach to human and biota protection has been recognized

  13. EDITORIAL: Invited papers from ISAMMA 2010 (Sendai, Japan, 12-16 July 2010) Invited papers from ISAMMA 2010 (Sendai, Japan, 12-16 July 2010)

    Science.gov (United States)

    Takahashi, M.; Saito, H.

    2011-02-01

    This cluster issue of Journal of Physics D: Applied Physics contains a collection of papers based on invited talks given at the 2nd International Symposium on Advanced Magnetic Materials and Applications 2010 (ISAMMA 2010) held from 12-16 July 2010 in Sendai, Japan. ISAMMA is the first consolidated symposium of three independent symposia held in the Asian region. ISPMM (International Symposium on Physics of Magnetic Materials) of Japan started in 1987 in Sendai, and was held six times: Beijing (1992), Seoul (1995), Sendai (1998), Taipei (2001) and Singapore (2005). ISAMT (International Symposium of Advanced Magnetic Technology) of Taiwan and SOMMA (International Symposium on Magnetic Materials and Applications) of Korea both began in 1999 and were each held five times up to 2005. ISAMMA was established as a new international symposium which will be held every three years in Asia. The concept of this unified international symposium was mainly led by Professor M Takahashi, Conference Chair of ISAMMA 2010. The first memorial symposium, ISAMMA 2007, was held in Jeju Island, Korea, during the period from 28 May to 1 June 2007. The main purpose and scope of ISAMMA is to provide an opportunity for scientists and engineers from all over the world to meet in Asia to discuss recent advances in the study of magnetic materials and their physics, spin-related phenomena and materials. The categories of ISAMMA 2010 were: fundamental properties of magnetic materials; hard/soft magnetic materials and applications; spintronics materials and devices; structured materials; multi functional magnetic materials; spin dynamics and micromagnetics; magnetic storage; materials for applications (sensors, high-frequency, power, and bio/medical devices); magnetic imaging and characterization. The scientific programme began on Tuesday 13 July 2010 with the opening remark by the Symposium Chairman. The conference was attended by 511 participants from 23 countries, with about 40 per cent from

  14. EDITORIAL: Advances in Measurement Technology and Intelligent Instruments for Production Engineering

    Science.gov (United States)

    Gao, Wei; Takaya, Yasuhiro; Gao, Yongsheng; Krystek, Michael

    2008-08-01

    the other papers, two are related to length measurement, which forms the basis of dimensional measurement. Schödel et al from Physikalisch Technische Bundesanstalt (PTB) describe the recent state of thermal expansion measurements with PTB's Precision Interferometer, which are based on the observation of the absolute length of samples by using phase stepping interferometry. Meiners-Hagen et al, also from PTB, investigate an improved method for compensation of the refractive index of air in length measurements by optical interferometry where the air pressure and the humidity are measured. Three papers concern surface metrology. Song et al from NIST (National Institutes of Standards and Technology) report topography measurement for determining the decay factors in surface replication of Standard Casing to support ballistics measurements in the US. Takahashi et al from the University of Tokyo present a lateral resolution improvement for a total internal reflection fluorescence microscope that employs the combined use of standing evanescent light and a scattering distribution retrieval algorithm with successive approximation. X Liu et al from Warwick University report on a new investigation into how surface topography and friction affect the touch-feel perception, with the results showing that both the measured roughness and friction coefficient have a strong correlation with rough-smooth and grippy-slippery feelings. Measurement algorithms and calibration are described in the following three papers. Hessling from SP Technical Research Institute of Sweden presents a general unprecedented framework for dynamic evaluation of measurement systems, which separates physical experiments, analysis and signal processing methods into succeeding steps of evaluations. Wübbeler et al from PTB illustrate the Monte Carlo method required for the numerical calculations of the probability density function approach, which has been proposed for evaluation of measurement uncertainty

  15. Condensed Matter Nuclear Science

    Science.gov (United States)

    Biberian, Jean-Paul

    2006-02-01

    . Bloch ions / T. A. Chubb. II. Inhibited diffusion driven surface transmutations / T. A. Chubb. III. Bloch nuclides, Iwamura transmutations, and Oriani showers / T. A. Chubb. Bose-Einstein condensate. Theoretical study of nuclear reactions induced by Bose-Einstein condensation in Pd / K.-I. Tsuchiya and H. Okumura. Proposal for new experimental tests of the Bose-Einstein condensation mechanism for low-energy nuclear reaction and transmutation processes in deuterium loaded micro- and nano-scale cavities / Y. E. Kim ... [et al.]. Mixtures of charged bosons confined in harmonic traps and Bose-Einstein condensation mechanism for low-energy nuclear reactions and transmutation processes in condensed matters / Y. E. Kim and A. L. Zubarev. Alternative interpretation of low-energy nuclear reaction processes with deuterated metals based on the Bose-Einstein condensation mechanism / Y. E. Kim and T. O. Passell. Multi-body fusion. [symbol]He/[symbol]He production ratios by tetrahedral symmetric condensation / A. Takahashi. Phonon coupling. Phonon-exchange models: some new results / P. L. Hagelstein. Neutron clusters. Cold fusion phenomenon and solid state nuclear physics / H. Kozima. Neutrinos, magnetic monopoles. Neutrino-driven nuclear reactions of cold fusion and transmutation / V. Filimonov. Light monopoles theory: an overview of their effects in physics, chemistry, biology, and nuclear science (weak interactions) / G. Lochak. Electrons clusters and magnetic monopoles / M. Rambaut. Others. Effects of atomic electrons on nuclear stability and radioactive decay / D. V. Filippov, L. I. Urutskoev, and A. A. Rukhadze. Search for erzion nuclear catalysis chains from cosmic ray erzions stopping in organic scintillator / Yu. N. Bazhutov and E. V. Pletnikov. Low-energy nuclear reactions resulting as picometer interactions with similarity to K-shell electron capture / H. Hora ... [et al.] -- 5. Other topics. On the possible magnetic mechanism of shortening the runaway of RBMK-1000 reactor

  16. Editorial

    Directory of Open Access Journals (Sweden)

    Gildenir Carolino Santos

    2014-08-01

    ências Biológicas de uma universidade pública do Paraná, relatam que o objetivo desse trabalho foi evidenciar a reconstrução do conceito de DNA durante o desenvolvimento de um módulo didático em um enfoque investigativo com alunos do terceiro ano do ensino médio de uma escola pública do Paraná. Na última seção PESQUISA, a primeira delas sob o título “A utilização das novas tecnologias em uma escola experimental do Rio de Janeiro”, Diego Luz Moura e Cleyton Batista de Sousa – ambos da Universidade Federal do Vale do São Francisco (Petrolina, PE – relatam a utilização das novas tecnologias no ambiente educacional e como ela é considerada uma competência inovadora para o ensino. Os autores enfatizam que a escola ao dialogar com a cultura deve incorporar essa forma de comunicação na sua forma de fazer ver o mundo. A pesquisa é realizada na cidade do Rio de Janeiro, onde a Educopédia tem sido uma estratégia interessante nessa forma de ensino. Na segunda pesquisa, Ivan Ramos Pagnossin, Roberta Takahashi Soledade, Gil da Costa Marques (Universidade de São Paulo, e Carolina Magalhães Costa Cavalcanti (Universidade Virtual do Estado de São Paulo, com o trabalho “Objetos de aprendizagem interativos: participação e desempenho de estudantes de ciências”, apresentam resultados qualitativos e quantitativos de participação e de desempenho de estudantes do curso semipresencial de graduação em licenciatura em Ciências, pelo convênio entre a Universidade de São Paulo e a Universidade Virtual do Estado de São Paulo, em atividades de aprendizagem on-line baseadas em objetos de aprendizagem interativos que simulam situações-problema. Esperamos que os trabalhos aqui apresentados sejam úteis para aqueles que continuam e continuarão a fazer pesquisas, e que compartilham seus saberes com o campo da Educação. Uma boa leitura!

  17. PREFACE: Liquid-solid interfaces: structure and dynamics from spectroscopy and simulations Liquid-solid interfaces: structure and dynamics from spectroscopy and simulations

    Science.gov (United States)

    Gaigeot, Marie-Pierre; Sulpizi, Marialore

    2012-03-01

    Ishiyama, Hideaki Takahashi and Akihiro Morita A theoretical study of the sum frequency vibrational spectroscopy of the carbon tetrachloride/water interface Anthony J Green, Angela Perry, Preston B Moore and Brian Space Salt effects on water/hydrophobic liquid interfaces: a molecular dynamics study Chao Zhang and Paolo Carloni Density functional theory-based simulations of sum frequency generation spectra involving methyl stretching vibrations: effect of the molecular model on the deduced molecular orientation and comparison with an analytical approach F Cecchet, D Lis, Y Caudano, A A Mani, A Peremans, B Champagne and J Guthmuller Towards modelling the vibrational signatures of functionalized surfaces: carboxylic acids on H-Si(111) surfaces Conrard Giresse Tetsassi Feugmo, Benoît Champagne, Yves Caudano, Francesca Cecchet, Yves J Chabal and Vincent Liégeois

  18. EDITORIAL: Cluster issue on Heusler compounds and devices Cluster issue on Heusler compounds and devices

    Science.gov (United States)

    Felser, Claudia; Hillebrands, Burkard

    2009-04-01

    ] Sakuraba Y, Hattori M, Oogane M, Ando Y, Kato H, Sakuma A, Miyazaki T and Kubota H 2006 Appl. Phys. Lett. 88 192508 [11] Inomata K, Okamura S, Miyazaki A, Kikuchi M, Tezuka N, Wojcik M and Jedryka E 2006 J. Phys. D: Appl. Phys. 39 816 [12] Fecher G H and Felser C 2007 J. Phys. D: Appl. Phys. 40 1582 [13] Tezuka N, Ikeda N, Miyazaki A, Sugimoto S, Kikuchi M and Inomata K 2006 Appl. Phys. Lett. 89 112514 [14] Kallmayer M, Schneider H, Jakob G, Elmers H J, Balke B and Cramm S 2007 J. Phys. D: Appl. Phys. 40 1552 [15] Cinchetti M, Wüstenberg J P, Sánchez Albaneda M, Steeb F, Conca A, Jourdan M and Aeschlimann M 2007 J. Phys. D: Appl. Phys. 40 1544 [16] Fecher G H, Balke B, Ouardi S, Felser C, Schonhense G, Ikenaga E, Kim J J, Ueda S and Kobayashi K 2007 J. Phys. D: Appl. Phys. 40 1576 [17] Chioncel L, Sakuraba Y, Arrigoni E, Katsnelson M I, Oogane M, Ando Y, Miyazaki T, Burzo E and Lichtenstein A I 2008 Phys. Rev. Lett. 100 086402 [18] Hamrle J, Blomeier S, Gaier O, Hillebrands B, Schneider H, Jakob G, Postava K and Felser C 2007 J. Phys. D: Appl. Phys. 40 1563 [19] Furubayashi T, Kodama K, Sukegawa H, Takahashi Y K, Inomata K and Hono K 2008 Appl. Phys. Lett. 93 122507 [20] Balke B, Fecher G H, Winterlik J and Felser C 2007 Appl. Phys. Lett. 90 152504 [21] Wurmehl S, Kandpal H C, Fecher G H and Felser C 2006 J. Phys.: Cond. Mat. 18 6171 [22] Entel P, Bucheinikov V D, Khovailo V V, Zayak A T, Adeagbo W A, Gruner M E, Herper H C and Wassermann E F 2006 J. Phys. D: Appl. Phys. 39 865

  19. EDITORIAL: Focus on Attosecond Physics

    Science.gov (United States)

    Bandrauk, André D.; Krausz, Ferenc; Starace, Anthony F.

    2008-02-01

    future involve using overdense plasmas. Electronic processes on sub-atomic spatio-temporal scales are the basis of chemical physics, atomic, molecular, and optical physics, materials science, and even some life science processes. Research in these areas using the new attosecond tools will advance together with the ability to control electrons themselves. Indeed, we expect that developments will advance in a way that is similar to advances that have occurred on the femtosecond time scale, in which much previous experimental and theoretical work on the interaction of coherent light sources has led to the development of means for 'coherent control' of nuclear motion in molecules. This focus issue of New Journal of Physics is centered on experimental and theoretical advances in the development of new methodologies and tools for electron control on the attosecond time scale. Topics such as the efficient generation of harmonics; the generation of attosecond pulses, including those having only a few cycles and those produced from overdense plasmas; the description of various nonlinear, nonperturbative laser-matter interactions, including many-electron effects and few-cycle pulse effects; the analysis of ultrashort propagation effects in atomic and molecular media; and the development of inversion methods for electron tomography, as well as many other topics, are addressed in the current focus issue dedicated to the new field of 'Attosecond Physics'. Focus on Attosecond Physics Contents Observing the attosecond dynamics of nuclear wavepackets in molecules by using high harmonic generation in mixed gases Tsuneto Kanai, Eiji J Takahashi, Yasuo Nabekawa and Katsumi Midorikawa Core-polarization effects in molecular high harmonic generation G Jordan and A Scrinzi Interferometric autocorrelation of an attosecond pulse train calculated using feasible formulae Y Nabekawa and K Midorikawa Attosecond pulse generation from aligned molecules—dynamics and propagation in H2+ E Lorin, S

  20. Selected Abstracts of the 6th International Congress of UENPS; Valencia (Spain; November 23rd-25th 2016; Session “Brain and development”

    Directory of Open Access Journals (Sweden)

    --- Various Authors

    2016-11-01

    ABS 23. NOVEL BIOMARKERS FOR PERINATAL ASPHYXIA: ALTERATIONS OF THE CDP-CHOLINE PATHWAY • Á. Sánchez-Illana, J. Kuligowski, R. Solberg, I. Lliso, J. Escobar, G. Quintás, O. Saugstad, M. VentoABS 24. SUPRATENTORIAL BRAIN GROWTH THROUGH TRIDIMENSIONAL ULTRASOUND IN THE VERY LOW BIRTH WEIGHT PRETERM INFANT • I. Benavente-Fernandez, J. León-Martínez, G. Jiménez-Gómez, E. Rodríguez-Zafra, R. Campuzano Fernandez-Colina, S.P. Lubián-LópezABS 25. NORMAL CEREBELLAR GROWTH THROUGH TRIDIMENSIONAL ULTRASOUNDS IN THE VERY LOW BIRTH WEIGHT PRETERM INFANT FROM BIRTH TO TERM CORRECTED AGE • I. Benavente-Fernandez, E. Rodríguez-Zafra, G. Jiménez-Gómez, J. León-Martínez, R Campuzano Fernandez-Colina, S.P. Lubián-LópezABS 26. AN INFANT WITH HUNTER SYNDROME AGGRAVATED BY A COMMUNICATING HYDROCEPHALUS • N. Mól, K. Ptak, M. Pilch, M. Zasada, P. KwintaABS 27. DIFFERENCES IN HEMODYNAMIC CONTROL OUTCOMES WITH SYSTEMICALLY COOLING OR SELECTIVE HEAD COOLING • K. Ueda, T Hayashi, M. Kubota, A. Takahashi, S. Watabe, K. Waki, Y. ArakakiABS 28. ACADEMIC PERFORMANCE IN PRETERM CHILDREN BORN IN THE ANTENATAL STEROIDS AND SURFACTANT ERA: A META-ANALYSIS • E.S. Twilhaar, J.F. de Kieviet, C.S.H. Aarnoudse-Moens, R.M. van Elburg, J. OosterlaanABS 29. OUTCOME PREDICTION IN PRETERM INFANTS WITH INTRAVENTRICULAR HEMORRHAGE USING A NEWLY DEVELOPED MRI BASED SCORING SYSTEM • K. Goeral, G. Kasprian, T. Waldhoer, R. Fuiko, A. Berger, M. Olischar, K. Klebermass-SchrehofABS 30. NEUROPROTECTION WITH HYPOTHERMIA AND ALLOPURINOL. IS IT A GENDER QUESTION? • J. Rodríguez-Fanjul, C. Duran Fernandez Feijoo, M. Lopez, M. Goretti, R. Balada, S. Alcántara, M. Camprubí CamprubíABS 31. SERUM LEVELS OF MANNOSE BINDING LECTIN (MBL AND S100 PROTEIN B AS BIOMARKERS OF NEUROLOGICAL DAMAGE IN ASPHYXIATED NEWBORNS: POSSIBLE EFFECTS OF THERAPEUTIC HYPOTHERMIA. PRELIMINARY DATA FROM A PROSPECTIVE STUDY • C. Auriti, G. Prencipe, R. Inglese, V. Mondì, D. Longo, L. Scarciolla, F. Campi, F

  1. EDITORIAL: Focus on Iron-Based Superconductors FOCUS ON IRON-BASED SUPERCONDUCTORS

    Science.gov (United States)

    Hosono, Hideo; Ren, Zhi-An

    2009-02-01

    Elastic theory for the vortex-lattice melting in iron-based high-Tc superconductors Q-H Chen, Q-M Nie, J-P Lv and T-C Au Yeung Electronic properties of LaO1-xFxFeAs in the normal state probed by NMR/NQR H-J Grafe, G Lang, F Hammerath, D Paar, K Manthey, K Koch, H Rosner, N J Curro, G Behr, J Werner, N Leps, R Klingeler, H-H Klauss, F J Litterst and B Büchner AFe2As2 (A = Ca, Sr, Ba, Eu) and SrFe2-xTMxAs2 (TM = Mn, Co, Ni): crystal structure, charge doping, magnetism and superconductivity Deepa Kasinathan, Alim Ormeci, Katrin Koch, Ulrich Burkhardt, Walter Schnelle, Andreas Leithe-Jasper and Helge Rosner Impurity states in a family of antiferromagnetic iron arsenides Qiang Han and Z D Wang Coherence-incoherence crossover in the normal state of iron oxypnictides and importance of Hund's rule coupling K Haule and G Kotliar Electronic structure of heavily electron-doped BaFe1.7Co0.3As2 studied by angle-resolved photoemission Y Sekiba, T Sato, K Nakayama, K Terashima, P Richard, J H Bowen, H Ding, Y-M Xu, L J Li, G H Cao, Z-A Xu and T Takahashi Absorption and photoemission spectroscopy of rare-earth oxypnictides T Kroll, F Roth, A Koitzsch, R Kraus, D R Batchelor, J Werner, G Behr, B Büchner and M Knupfer Superconductivity in LnFePO (Ln = La, Pr and Nd) single crystals R E Baumbach, J J Hamlin, L Shu, D A Zocco, N M Crisosto and M B Maple Unconventional pairing originating from disconnected Fermi surfaces in the iron-based superconductor Kazuhiko Kuroki, Seiichiro Onari, Ryotaro Arita, Hidetomo Usui, Yukio Tanaka, Hiroshi Kontani and Hideo Aoki Near-degeneracy of several pairing channels in multiorbital models for the Fe pnictides S Graser, T A Maier, P J Hirschfeld and D J Scalapino Investigation of superconducting gap structure in TbFeAsO0.9F0.1 using point contact Andreev reflection K A Yates, K Morrison, J A Rodgers, G B S Penny, J-W G Bos, J P Attfield and L F Cohen Competition of magnetism and superconductivity in underdoped (Ba1-xKx)Fe2As2 Marianne Rotter, Marcus

  2. Report about the Solar Eclipse on August 11, 1999

    Science.gov (United States)

    1999-08-01

    pix - 49k] [JPEG: 800 x 612 pix - 262k] [JPEG: 3039 x 1846 pix - 3.6M] Eclipse Photo by Philippe Duhoux Second "Diamond Ring" [JPEG: 400 x 301 pix - 34k] [JPEG: 800 x 601 pix - 163k] [JPEG: 2905 x 2181 pix - 2.0M] The Corona (Philippe Duhoux) "For the observation of the eclipse, I chose a field on a hill offering a wide view towards the western horizon and located about 10 kilometers north west of Garching." "While the partial phase was mostly cloudy, the sky went clear 3 minutes before the totality and remained so for about 15 minutes. Enough to enjoy the event!" "The images were taken on Agfa CT100 colour slide film with an Olympus OM-20 at the focus of a Maksutov telescope (f = 1000 mm, f/D = 10). The exposure times were automatically set by the camera. During the partial phase, I used an off-axis mask of 40 mm diameter with a mylar filter ND = 3.6, which I removed for the diamond rings and the corona." Note in particular the strong, detached protuberances to the right of the rim, particularly noticeable in the last photo. Eclipse Photo by Cyril Cavadore Totality [JPEG: 400 x 360 pix - 45k] [JPEG: 800 x 719 pix - 144k] [JPEG: 908 x 816 pix - 207k] The Corona (Cyril Cavadore) "We (C.Cavadore from ESO and L. Bernasconi and B. Gaillard from Obs. de la Cote d'Azur) took this photo in France at Vouzier (Champagne-Ardennes), between Reims and Nancy. A large blue opening developed in the sky at 10 o'clock and we decided to set up the telescope and the camera at that time. During the partial phase, a lot of clouds passed over, making it hard to focus properly. Nevertheless, 5 min before totality, a deep blue sky opened above us, allowing us to watch it and to take this picture. 5-10 Minutes after the totality, the sky was almost overcast up to the 4th contact". "The image was taken with a 2x2K (14 µm pixels) Thomson "homemade" CCD camera mounted on a CN212 Takahashi (200 mm diameter telescope) with a 1/10.000 neutral filter. The acquisition software set exposure time (2

  3. First Announcement and Call for Papers SECOND INTERNATIONAL SYMPOSIUM ON FLOOD DEFENCE

    Institute of Scientific and Technical Information of China (English)

    2001-01-01

    . Italy Salas, J.D. USA Dong, Zheren China Singh, R.B. India Evans, Edward UK Soroosh, Sorooshian USA Falconer, R.A. UK Takahashi,T. Japan Ikeda, Syunsuke Japan Tamai, N. Japan Jozan, Krisztina Hungary Tan, Ying China Knight, D.W. UK Todini, Ezio Italy Koch, M. Germany Toensmann, F. Germany Koffman, H.M. USA Tung, Y.K. HK Lee, Joseph.H.W. HK White, W.R. UK Onorati, Giuseppe Italy Wood, Ian New Zealand Overbeek, H.J. Netherlands van Stokkom, H. Netherland Patel, V.C. USA Yen, B.C. USA CONFERENCE STRUCTURE Keynote lectures will be given in plenary sessions. Invited lectures and papers focusing on thematic complexes will be presented in parallel sessions in the first three days (the fourth day is scheduled for a one-day city tour). Papers may also be presented in poster sessions. The conference will offer facilities, including overhead, slide and beamer (computer projector) for presentations. Submitted abstracts will be peer reviewed and papers will be invited on the basis of the abstracts. The papers themselves will also be reviewed to ensure an appropriate technical and English standard for the meeting. The proceedings of the conference will be published in book form and will be available to delegates at the time of registration. A CD of the electronic version of the proceedings will be presented to the full-registered participants. After the conference the proceedings will be widely distributed by the international book trade. A one-day city tour and two conference banquets will be arranged for the delegates and their companions,which are included in the registration fee.REGISTRATION FEE The registration fee for participation in the conference will be US $500. A discount of 10% applies for members of IAHR and the sponsor organizations (US$450) or early payment before Aug. 1, 2002. The registration fee will cover the proceedings (book and CD), publication of papers, conference banquets, city tour on the last conference day, daily lunches and coffee & tea breaks. For