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Sample records for atsuo tanaka tetsuya

  1. The Tanaka model

    International Nuclear Information System (INIS)

    Tanaka, G.

    1998-01-01

    The data presented here includes male and female models for Asian populations in the age groups: Newborn, 1 year, 5 years, 10 years, 15 years and adult. The model for adult male was presented at the 3rd Research Coordination Meeting held in Tianjin, October 1993. At that time, the CRP participants requested Dr. Tanaka to continue development of a female model. The adult female model was developed together with models for five younger age groups. It is intended to provide useful data for radiation protection, and has been submitted to ICRP for use in developing revised models for internal dosimetry. The model is based on normal organ masses as well as physical measurements obtained primarily from Chinese, Indian and Japanese populations. These are believed to be the most extensive data sets available. The data presented here also takes into account the variations found in the data reported by other CRP participants. It should be stressed that the model is, at the same time, based on the approach used by the ICRP Reference Man Task Group in development of their Reference Man. As noted above, the adult male model was presented at the RCM Meeting in Tianjin and approved by the participants as ''Tanaka Model'' that would be convenient for use in internal dosimetry studies for subjects from Asian populations. It is also the essential part of a publication which is a revised edition of the previous work

  2. Koshiba, Tanaka give Nobel lectures

    CERN Multimedia

    2002-01-01

    Masatoshi Kosiba and Koichi Tanaka presented lectures in English on Sunday, touching on topics ranging from particle physics, to teamwork to commemorate their reception of this year's Nobel Prize for Physics and Chemistry. The two will receive their respective prizes in an awards ceremony scheduled for Tuesday (1 page).

  3. Factors affecting the occurrence of Porphyra vietnamensis Tanaka & Pham-Hoang Ho along the Goa coast

    Digital Repository Service at National Institute of Oceanography (India)

    Pereira, N.; Kakode, J.; Dhargalkar, V.K.

    Porphyra vietnamensis Tanaka & Pham-Hoang Ho occurs in the intertidal region of the Goa coast, during mon-soon months from June to September. The growth and distribution patterns of P. vietnamensis populations along the Goa coast were studied...

  4. Evaluation of validity of Tanaka-Johnston analysis in Mumbai school children.

    Science.gov (United States)

    Hambire, Chaitali Umesh; Sujan, Sunanda

    2015-01-01

    Estimation of the mesiodistal dimensions of the unerupted canines and premolars in the early mixed dentition is a necessary diagnostic aid in space management. Tanaka-Johnston analysis was developed for North American children. Anthropological study reveals that tooth size varies among different ethnicities. The present study was performed to evaluate the validity of Tanaka-Johnston method of mixed dentition arch analysis in Mumbai school children. (1) To determine the correlation between the sum of the mesiodistal widths of the permanent mandibular incisors and combined mesiodistal widths of the permanent mandibular and maxillary canines and premolar in Mumbai school children. (2) To examine the applicability of Tanaka-Johnston method of prediction. Dental casts of maxillary and mandibular arches of 300 children, 147 boys and 153 girls within the age group of 12-15 years, with permanent dentitions were fabricated. The mesiodistal crown dimensions of teeth were measured with a dial caliper. Tanaka-Johnston method of mixed dentition arch analysis was performed for the study population, and statistical analysis was done. Descriptive statistics including the mean, standard deviation, range, and standard error were calculated and tabulated. Tanaka-Johnston's equation when applied to the data available for Mumbai school children, it was observed that it slightly overestimates the tooth size. (1) There was a positive correlation between the width of mandibular incisors and mandibular and maxillary canines and premolars. (2) The Tanaka-Johnston prediction method was not accurate for a sample of Mumbai school children.

  5. Hierarchical Modeling of Mastic Asphalt in Layered Road Structures Based on the Mori-Tanaka Method

    Directory of Open Access Journals (Sweden)

    Richard Valenta

    2012-01-01

    Full Text Available We present an application of the Mori-Tanaka micromechanical model for a description of the highly nonlinear behavior of asphalt mixtures. This method is expected to replace an expensive finite element-based fully-coupled multi-scale analysis while still providing useful information about local fields on the meso-scale that are not predictable by strictly macroscopic simulations. Drawing on our recent results from extensive experimental and also numerical investigations this paper concentrates on principal limitations of the Mori-Tanaka method, typical of all two-point averaging schemes, when appliedto material systems prone to evolving highly localized deformation patterns such as a network of shear bands. The inability of the Mori-Tanaka method to properly capture the correct stress transfer between phases with increasing compliance of the matrix phase is remedied here by introducing a damage like parameter into the local constitutive equation of reinforcements (stones to control an amount of stress taken by this phase. A deficiency of the Mori-Tanaka method in the prediction of creep response is also mentioned particularly in the light of large scale simulations. A comparison with the application of macroscopic homogenized constitutive model for an asphalt mixture is also presented.

  6. Reliability and validity of the new Tanaka B Intelligence Scale scores: a group intelligence test.

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    Yota Uno

    Full Text Available OBJECTIVE: The present study evaluated the reliability and concurrent validity of the new Tanaka B Intelligence Scale, which is an intelligence test that can be administered on groups within a short period of time. METHODS: The new Tanaka B Intelligence Scale and Wechsler Intelligence Scale for Children-Third Edition were administered to 81 subjects (mean age ± SD 15.2 ± 0.7 years residing in a juvenile detention home; reliability was assessed using Cronbach's alpha coefficient, and concurrent validity was assessed using the one-way analysis of variance intraclass correlation coefficient. Moreover, receiver operating characteristic analysis for screening for individuals who have a deficit in intellectual function (an FIQ<70 was performed. In addition, stratum-specific likelihood ratios for detection of intellectual disability were calculated. RESULTS: The Cronbach's alpha for the new Tanaka B Intelligence Scale IQ (BIQ was 0.86, and the intraclass correlation coefficient with FIQ was 0.83. Receiver operating characteristic analysis demonstrated an area under the curve of 0.89 (95% CI: 0.85-0.96. In addition, the stratum-specific likelihood ratio for the BIQ≤65 stratum was 13.8 (95% CI: 3.9-48.9, and the stratum-specific likelihood ratio for the BIQ≥76 stratum was 0.1 (95% CI: 0.03-0.4. Thus, intellectual disability could be ruled out or determined. CONCLUSION: The present results demonstrated that the new Tanaka B Intelligence Scale score had high reliability and concurrent validity with the Wechsler Intelligence Scale for Children-Third Edition score. Moreover, the post-test probability for the BIQ could be calculated when screening for individuals who have a deficit in intellectual function. The new Tanaka B Intelligence Test is convenient and can be administered within a variety of settings. This enables evaluation of intellectual development even in settings where performing intelligence tests have previously been difficult.

  7. The Tanaka-Johnston orthodontic analysis for brazilian individuals = Efetividade da análise ortodôntica de Tanaka e Johnston em brasileiros

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    Vilella, Oswaldo de Vasconcellos

    2012-01-01

    Conclusão: A análise de Tanaka e Johnston permite uma predição aceitável do somatório dos diâmetros mésio-distais dos caninos e pré-molares dos indivíduos brasileiros de cor de pele negra e de cor de pele branca do gênero masculino. Com relação aos indivíduos de cor de pele branca do gênero feminino, os valores foram superestimados

  8. Validación de la ecuación de Tanaka-Johnston en una población de escolares yemenita Validation of Tanaka-Johnston equation in Yemeni schoolboys

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    Gloria M. Marín Manso

    2009-12-01

    Full Text Available El análisis del espacio requiere una comparación entre el espacio disponible y el espacio necesario para la alineación de los dientes. El ampliamente usado análisis del espacio de Tanaka-Johnston es cuestionado cuando es aplicado a diferentes poblaciones. Por tanto el propósito de este estudio fue determinar el ancho mesiodistal de incisivos, caninos y premolares mandibulares y caninos y premolares maxilares, para validar el análisis de Tanaka-Johnston según el sexo en 100 estudiantes yemenitas comprendidos entre las edades de 12 a 16 años. Se encontró diferencias estadísticamente significativas en el ancho mesiodistal de caninos y premolares según el sexo, excepto para el segundo premolar maxilar. La ecuación de Tanaka-Johnston sobreestima el ancho mesiodistal de los segmentos bucales en esta población.In space-analysis it is necessary a comparison between the available space and the necessary space in teeth alignement. The well-used Tanaka-Jhonston space analysis is questioned when it is applied in different populations; thus, the aim of present study was to determine the mesiodistal width of mandibular incisives, canines and premolar and of maxillary canines and premolar to validate the Tanaka-Johnston analysis according to sex in 100 Yemeni students aged from 12 to 16. There were statistically significant differences in mesiodistal width of canines and premolars according sex, except for the second maxillary premolar. The Tanaka-Johnston equation overrates the mesiodistal width of oral segments in this population.

  9. Consistent treatment and automation of the incremental Mori-Tanaka scheme for elasto-plastic composites

    Science.gov (United States)

    Sadowski, P.; Kowalczyk-Gajewska, K.; Stupkiewicz, S.

    2017-09-01

    A consistent algorithmic treatment of the incremental Mori-Tanaka (MT) model for elasto-plastic composites is proposed. The aim is to develop a computationally efficient and robust micromechanical constitutive model suitable for large-scale finite-element computations. The resulting overall computational scheme is a doubly-nested iteration-subiteration scheme. The Newton method is used to solve the nonlinear equations at each level involved. Exact linearization is thus performed at each level so that a quadratic convergence rate can be achieved. To this end, the automatic differentiation (AD) technique is used, and the corresponding AD-based formulation is provided. Excellent overall performance of the present MT scheme in three-dimensional finite-element computations is illustrated.

  10. Effective properties of textile composites: application of the Mori–Tanaka method

    DEFF Research Database (Denmark)

    Skocek, Jan; Zeman, Jan; Sejnoha, Michal

    2008-01-01

    An efficient approach to the evaluation of effective elastic properties of plain weave textile composites using the Mori-Tanaka method is presented. The method proves its potential even if applied to real material systems with various types of imperfections including the non-uniform waviness......-carbon composite laminate demonstrates not only its applicability but also its efficiency particularly when compared with finite element simulations....... of the fiber-tow paths, both along its longitudinal direction and through the laminate thickness. The influence of the remaining geometrical parameters is accounted for by optimal calibration of the shape of the equivalent ellipsoidal inclusion. An application of the method to a particular sample of the carbon...

  11. Validation study of the Tanaka and Kawasaki equations to estimate the daily sodium excretion by a spot urine sample.

    Science.gov (United States)

    Mill, José Geraldo; Rodrigues, Sérgio Lamêgo; Baldo, Marcelo Perim; Malta, Deborah Carvalho; Szwarcwald, Celia Landmann

    2015-12-01

    To validate Tanaka and Kawasaki's formulas to calculate the salt intake by the sodium/creatinine ratio in spot of urine. Two hundred and seventy two adults (20 - 69 years old; 52.6% women) with 24 h urine collection and two urinary spots collected on the same day (while fasting - spot 1 - or not fasting - spot 2). Anthropometry, blood pressure and fasting blood were measured on the same day. The analysis of agreement between salt consumption measured in the 24 h urine test and urinary spots were determined by the Pearson's correlation (r) and the Bland & Altman method. The mean salt consumption measured by the 24 h sodium excretion was 10.4 ± 5.3 g/day. The correlation between the measured 24 h sodium excretion and the estimation based on spots 1 and 2, respectively, was only moderated according to Tanaka (r = 0.51 and r = 0.55; p salt consumption by Tanaka to increasing salt consumption and conversely, an overestimation of consumption by the Kawasaki formula. The estimation of salt consumption (difference between measured and calculated salt consumption lower than 1 g/day) was adequate only when the consumption was between 9 - 12 g/day (Tanaka) and 12 - 18 g/day (Kawasaki). Spot urine sampling is adequate to estimate salt consumption only among individuals with an actual consumption near the population mean.

  12. Comparison of space analysis performed on plaster vs. digital dental casts applying Tanaka and Johnston's equation

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    Júlia Olien Sanches

    2013-02-01

    Full Text Available OBJECTIVE: The purpose of this study was to compare dental size measurements, their reproducibility and the application of Tanaka and Johnston regression equation in predicting the size of canines and premolars on plaster and digital dental casts. METHODS: Thirty plaster casts were scanned and digitized. Mesiodistal measurements of the teeth were then performed with a digital caliper on the plaster and digital casts using O3d software system (Widialabs©.The sum of the sizes of the lower incisors was used to obtain predictive values of the sizes of the premolars and canines using the regression equation, and these values were compared with the actual sizes of the teeth. The data were statistically analyzed by applying to the results Pearson's correlation test, Dahlberg's formula, paired t-test and analysis of variance (pOBJETIVO: comparar medidas de tamanhos dentários, suas reprodutibilidades e a aplicação da equação de regressão de Tanaka e Johnston na predição do tamanho dos caninos e pré-molares em modelos de gesso e digital. MÉTODOS: trinta modelos de gesso foram escaneados para obtenção dos modelos digitais. As medidas do comprimento mesiodistal dos dentes foram obtidas com paquímetro digital nos modelos de gesso e nos modelos digitais utilizando o software O3d (Widialabs. A somatória do tamanho dos incisivos inferiores foi utilizada para obter os valores de predição do tamanho dos pré-molares e caninos utilizando equação de regressão, e esses valores foram comparados ao tamanho real dos dentes. Os dados foram analisados estatisticamente, aplicando-se aos resultados o teste de correlação de Pearson, a fórmula de Dahlberg, o teste t pareado e a análise de variância (p < 0,05. RESULTADOS: excelente concordância intraexaminador foi observada nas medidas realizadas em ambos os modelos. O erro aleatório não esteve presente nas medidas obtidas com paquímetro, e o erro sistemático foi mais frequente no modelo digital

  13. Core-shell column Tanaka characterization and additional tests using active pharmaceutical ingredients.

    Science.gov (United States)

    Ludvigsson, Jufang Wu; Karlsson, Anders; Kjellberg, Viktor

    2016-12-01

    In the last decade, core-shell particles have gained more and more attention in fast liquid chromatography separations due to their comparable performance with fully porous sub-2 μm particles and their significantly lower back pressure. Core-shell particles are made of a solid core surrounded by a shell of classic fully porous material. To embrace the developed core-shell column market and use these columns in pharmaceutical analytical applications, 17 core-shell C 18 columns purchased from various vendors with various dimensions (50 mm × 2.1 mm to 100 mm × 3 mm) and particle sizes (1.6-2.7 μm) were characterized using Tanaka test protocols. Furthermore, four selected active pharmaceutical ingredients were chosen as test probes to investigate the batch to batch reproducibility for core-shell columns of particle size 2.6-2.7 μm, with dimension of 100 × 3 mm and columns of particle size 1.6 μm, with dimension 100 × 2.1 mm under isocratic elution. Columns of particle size 2.6-2.7 μm were also tested under gradient elution conditions. To confirm the claimed comparable efficiency of 2.6 μm core-shell particles as sub-2 μm fully porous particles, column performances of the selected core-shell columns were compared with BEH C 18 , 1.7 μm, a fully porous column material as well. © 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

  14. SOME RESULTS ON A GENERALIZED SASAKIAN-SPACE-FORM ADMITTING TRANS-SASAKIAN STRUCTURE WITH RESPECT TO A GENERALIZED TANAKA WEBSTER OKUMURA CONNECTION

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    ALI AKBAR

    2015-11-01

    Full Text Available The object of the present paper is to study generalized Sasakian-spaceforms admitting trans-Sasakian structure with respect to a generalized Tanaka Webster Okumura connection. Locally \\phi-symmetric as well as \\eta- recurrent generalized Sasakian space- forms admitting trans-Sasakian structure with respect to a generalized Tanaka Webster Okumura connection have also been studied in the present paper.

  15. Valoración de la ecuación de Tanaka-Johnston en estudiantes cubanos con oclusión normal Assessment of Tanaka-Johnston equation in Cuban students presenting normal occlusion

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    Adis Ferreiro Marín

    2010-09-01

    Full Text Available El análisis de Tanaka-Johnston, mundialmente empleado para la predicción del espacio de caninos y premolares no brotados, ha sido muy cuestionado por la variabilidad en el tamaño dentario entre las diferentes poblaciones, y por haber sido realizado en un grupo étnico no aplicable a todos. Se realizó un estudio descriptivo transversal, con el objetivo de determinar el ancho mesiodistal de incisivos, caninos y premolares mandibulares, así como de caninos y premolares maxilares, y comparar la suma real de estos dientes con los estimados por Tanaka-Johnston, según el sexo y la arcada. El universo de esta investigación estuvo constituido por 50 estudiantes de la Facultad de Estomatología de La Habana, 25 del sexo femenino y 25 del sexo masculino, con oclusión normal, sin antecedentes de tratamiento ortodóncico; todos descendientes de cubanos. En los resultados se observó que los anchos mesiodistales de los incisivos, caninos y primeros premolares inferiores y de caninos y segundo premolar izquierdo superiores fueron significativamente mayores en el sexo masculino que en el femenino. La suma real de caninos y premolares superiores e inferiores fue mayor en el sexo masculino que en el femenino. Cuando se comparó la suma real de caninos y premolares, con lo estimado según la ecuación de Tanaka-Johnston, se halló que la esta sobrestimó los valores de caninos y premolares, ya que los resultados fueron significativamente menores.The Tanaka-Johnston analysis used at worldwide to predict the space of non-erupted canines and premolars has been questioned due to the variability in the teeth size among different populations and also to be carried out in non-applicable whole ethnic group. A cross-sectional and descriptive study was conducted to determine the mesiodistal width of mandibular incisives, canines and premolars, as well as of danines and premolar-maxillary and to compare the real sum of these theeth with the estimates by Tanaka

  16. ÁCIDO GIBERÉLICO E O DESENVOLVIMENTO DE PLÂNTULAS DE TANGERINA 'CLEÓPATRA' (Citrus reshni hort. ex. Tanaka GIBBERELLIC ACID AND THE DEVELOPMENT OF MANDARIN (Citrus reshni hort. ex. Tanaka SEEDLINGS

    Directory of Open Access Journals (Sweden)

    Júnior Cesar Modesto

    1999-01-01

    Full Text Available Plântulas de tangerina 'Cleópatra'(Citrus reshni hort. ex. Tanaka, foram utilizadas em delineamento inteiramente casualizado, com três repetições no esquema de parcelas sub-divididas, onde os tratamentos principais foram 5 concentrações de ácido giberélico: T1 = 0, T2 = 25, T3 = 50, T4 = 100 e T5 = 150 mg.L-1, parceladas em quatro pulverizações. As coletas de material foram realizadas dos 70 aos 210 dias, em intervalos de 14 dias. Pelos resultados obtidos, o fitorregulador promoveu efeito favorável com relação ao incremento do comprimento do caule, sendo que aplicações de 100 e 150 mg.L-1 foram superiores as demais. O diâmetro do caule não foi influenciado pela aplicação de ácido giberélico.'Cleópatra' mandarin (Citrus reshni hort. ex. Tanaka seedlings used in an entirely randomized trial, with three replicates in a split plot format, were submitted to five gibberellic acid treatments of concentrations 0; 25; 50; 100; 150 mg.L-1, split into four sprayings. Data was collected, from the 70th up to the 120th day, in 14- day intervals. The results showed that the plant regulator enhanced the growth of the seedlings increasing the length of their stems. The sprays of concentration 100 and 150 mg.L-1 gave the best results. The gibberellic acid spraying had no effect on stem diameter.

  17. Effect of irrigation and fertilization on crop yield and fruit quality of the Tahiti lime Citrus latifolia Tanaka (Rutaceae

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    Diana Dorado Guerra

    2015-01-01

    Full Text Available In a seven years old citrus grove of Tahiti lime Citrus latifolia Tanaka (Rutaceae located in El Espinal, Tolima, Colombia, which has a predominantly negative water balance throughout the year, we evaluated the effect of irrigation and fertilization on yield and fruit quality in 2009 and 2011. Trees were subjected to three levels of water based on the evapotranspiration reference (ETo: L1=100 %, L2=70 % and L3=50 %. We applied three nitrogen treatments: N1=nitrogen required by the nutritional balance, N2=twice the level of nitrogen used in N1, and N3=fertilizer application used by the common farmer. We evaluated the performance, fruit weight, polar and equatorial diameter of fruit, shell thickness, weight and percentage of juice, acidity, soluble solids and vitamin C. The experiment was conducted under a randomized complete block design in a split plot arrangement; the variance and means of the data were statistically analyzed with SAS. And optimal response is between irrigation and fruit quality interaction was obtained with irrigation L1 and fertilization N2. We obtained the highest values in the response variables when the highest amount of water was applied L1, regardless of fertilizer applications, indicating that a lower water supply not only affects the performance of the plant, but also the quality of the fruit, minimizing market opportunities.

  18. Evaluation of Anti-Inflammatory Activity of Citrus latifolia Tanaka Essential Oil and Limonene in Experimental Mouse Models

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    Raquel Kummer

    2013-01-01

    Full Text Available The genus Citrus (Rutaceae includes several species of plants that produce some of the most cultivated fruits in the world, providing an appreciable content of essential oil. In folk medicine, they are used as a cholagogue, antipyretic, anti-inflammatory, sedative, and antitoxic effects. Lemon essential oil has been used since ancient times for its antiseptic, carminative, diuretic, and eupeptic effects. In this study, we investigated the anti-inflammatory activity of Citrus latifolia Tanaka essential oil (CLEO and its main constituent LIM. In the cell viability assay, CLEO and LIM (3, 10, 30, and 90 μg/mL had low cytotoxicity. In zymosan-induced peritonitis, LIM (500 mg/kg decreased the infiltration of peritoneal exudate leukocytes and decreased the number of polymorphonuclear leukocytes. In vitro chemotaxis revealed that CLEO and LIM (1, 3, and 10 µg/mL promoted a significant reduction of neutrophil migration toward fMLP and LTB4. LIM (500 mg/kg also reduced TNF-α levels but did not alter IL-10 levels in the peritoneal exudate. In conclusion, this study showed that LIM isolated from CLEO had potential anti-inflammatory effects, likely by inhibiting proinflammatory mediators present in inflammatory exudate and leukocyte chemotaxis.

  19. Eshelby-Mori-Tanaka approach for vibrational behavior of functionally graded carbon nanotube-reinforced plate resting on elastic foundation

    Energy Technology Data Exchange (ETDEWEB)

    Kamarian, S.; Pourasghar, A. [Islamic Azad University, Kermanshah (Iran, Islamic Republic of); Yas, M. H. [Razi University, Kermanshah (Iran, Islamic Republic of)

    2013-11-15

    In this study, based on the three-dimensional theory of elasticity, free vibration characteristics of functionally graded (FG) nanocomposite plates reinforced by randomly-oriented straight single-walled carbon nanotubes (SWCNTs) resting on an elastic foundation are considered. Material properties are graded in the thickness direction of the plate according to the volume fraction power law distribution. An embedded carbon nanotube (CNT) in a polymer matrix and its surrounding inter-phase which is perfectly bonded to surrounding resin is replaced with an equivalent fiber to predict the mechanical properties of the carbon nanotube/polymer composite. The Mori-Tanaka approach is employed to calculate the effective elastic moduli of the plate. The natural frequencies of the plate are obtained by means of the generalized differential quadrature (GDQ) method. Detailed parametric studies have been carried out to investigate the influences of the CNT volume fraction, Winkler foundation modulus, shear elastic foundation modulus and various geometrical parameters on the vibration behavior of the functionally graded carbon nanotube-reinforced (FG-CNTR) plates.

  20. Free vibration analysis of functionally graded CNT-reinforced nanocomposite beam using Eshelby-Mori-Tanaka approach

    Energy Technology Data Exchange (ETDEWEB)

    Heshmati, M.; Yas, M. H. [Razi University, Kermanshah (Iran, Islamic Republic of)

    2013-11-15

    This work deals with the effect of agglomeration and distribution of carbon nanotube on the free vibration characteristics of a functionally graded nanocomposite beams reinforced by single-walled carbon nanotubes (SWCNTs) by employing an equivalent fiber based on the Eshelby-Mori-Tanaka approach. Different SWCNTs distributions in the thickness directions are introduced to improve fundamental natural frequency of polymer composite beam. The micromechanics models used in the study include a two parameter model of agglomeration. An embedded carbon nanotube in a polymer matrix and its surrounding inter-phase is replaced with an equivalent fiber for predicting the mechanical properties of the carbon nanotube/polymer composite. The system of equations of motion is derived by using the principle of virtual work under the assumptions of the Euler-Bernoulli beam theory. The finite element method is employed to obtain a numerical approximation of the motion equation. Numerical results are presented in both tabular and graphical forms to figure out the effects of nanotube agglomeration, CNTs distribution and boundary conditions on the dynamic characteristics of the beam. The above mentioned effects play very important role on the dynamic behavior of the beam.

  1. Korean Byungkyul - Citrus platymamma Hort.et Tanaka flavonoids induces cell cycle arrest and apoptosis, regulating MMP protein expression in Hep3B hepatocellular carcinoma cells.

    Science.gov (United States)

    Hong, Gyeong Eun; Lee, Ho Jeong; Kim, Jin A; Yumnam, Silvia; Raha, Suchismita; Venkatarame Gowda Saralamma, Venu; Heo, Jeong Doo; Lee, Sang Joon; Kim, Eun Hee; Won, Chun Kil; Kim, Gon Sup

    2017-02-01

    Citrus platymamma Hort.et Tanaka is an indigenous fruit of Jeju island in Korea. In this study the bioactivity of C. platymamma flavonoids were evaluated on human hepatoma Hep3B cell lines. Eleven flavonoids were identified from the peels of C. platymamma Hort.et Tanaka through high-performance liquid chromatography-Tandem mass spectrometry and the anticancer effect of these C. platymamma flavonoids on human hepatoma Hep3B were studied. Chromatin condensation was observed in Hep3B cells treated with C. platymamma flavonoids. DNA fragmentation was confirmed through agarose gel electrophoresis and TUNEL assay. An increase in the total apoptotic cells and G2/M cell cycle arrest with decreased protein expression of CDC25C, CDK1, cyclin B1 and p21 were observed in Hep3B cells treated with flavonoids of C. platymamma. Further, protein expression of Bcl-XL, Bax, caspase-3 and -9 were also modulated by C. platymamma flavonoids treatment indicating that cell death is through intrinsic apoptotic pathway. Moreover, C. platymamma flavonoids also regulated the phosphorylation of MAPKs, PI3K, and Akt in Hep3B cells. Relevant to inhibiting metastasis, C. platymamma treatment reduced wound closure of Hep3B cells and the protein expression of matrix metalloproteinase-2 and -9 were reduced in C. platymamma treated cells. The results show that C. platymamma flavonoids induce cell cycle arrest and apoptosis following activation of MAPKs and suppression of PI3K/Akt pathway which eventually inhibits cell migration in Hep3B cells. The finding provides evidence on biochemical activities of C. platymamma Hort.et Tanaka, which would be an essential agent for hepatocellular carcinoma (HCC) treatment.

  2. Effect of red light irradiation on skin coloration and carotenoid composition of stored ''Miyauchi'' iyo (Citrus iyo hort. ex Tanaka) tangor fruit

    International Nuclear Information System (INIS)

    Ohishi, H.; Watanabe, J.; Kadoya, K.

    1996-01-01

    Effect of red light irradiation on skin color development and carotenoid composition of stylar end of Miyauchi iyo (citrus iyo hort. ex Tanaka) tangor fruit was examined during storage. Both increase in a and a/b value and decrease in b value were enhanced by the irradiation. The a/b values of the fruit exposed were higher than those of control during the whole storage period. HPLC analyses also revealed the increase in total carotenoids content, of which the carotenoids that were tentatively named B and F most greatly accumulated. Similar tendencies were observed at equator and stem end portions. These results indicate that red light irradiation is involved in not only acceleration of overall color development but also enhancement of red color pigmentation by influencing a certain specific pathway of carotenoid biosynthesis

  3. Citrus tristeza virus (CTV influence on the behavior of Tahiti lime (Citrus latifoliaTanaka grafted on six rootstocks in the plain piedmont of Colombia (1997-2008

    Directory of Open Access Journals (Sweden)

    Hans Nicolás Chaparro Zambrano

    2013-01-01

    Full Text Available Tahiti lime, Citrus latifolia Tanaka (Rutaceae, is susceptible to Citrus Tristeza Virus (CTV, and if affected, decreases the profitability of the crop. In the well-drained high terrace of the Meta piedmont, the influence of the virus attack was evaluated on the performance of Tahiti lime grafted on six rootstocks (Carrizo; Sunki × English; Sunki × Jacobson; Pomeroy; Rubidoux, y Kryder 15-3 on a completely randomized experiment design taking each tree as an experimental unit. A comparison of means and inferential statistic were used for: plant height, height and canopy diameter; canopy volume, yield and severity of CTV. All rootstocks showed homogenous height. Carrizo was the exception with less size and canopy volume. The highest accumulated fruit yield (Kg/tree wasobtained by Sunki x English, followed by Rubidoux and the lowest yield was obtained by Carrizo. The highest yield efficiency of average canopy volume was obtained with Sunki x Jacobson. The Tahiti lime yield and morphological development fell in the seventh year (2007 in all rootstocks, due to an infection caused by a mix of isolates of CTV type Madeira and type B128, isolates which cause stem channeling : type B31 which causes moderate stem channeling and B7 and VT isolate,

  4. Screening of promising chemotherapeutic candidates from plants against human adult T-cell leukemia/lymphoma (IV): phenanthroindolizidine alkaloids from Tylophora tanakae leaves.

    Science.gov (United States)

    Nakano, Daisuke; Ishitsuka, Kenji; Ikeda, Mizuki; Tsuchihashi, Ryota; Okawa, Masafumi; Okabe, Hikaru; Tamura, Kazuo; Kinjo, Junei

    2015-07-01

    Adult T-cell leukemia/lymphoma (ATL) is a malignancy of mature peripheral T lymphocytes caused by human T-cell lymphotropic virus type 1 (HTLV-1). There are an estimated 5 million to 20 million HTLV-1-infected individuals worldwide; their lifetime risk of developing ATL is 3-5 %, and high HTLV-1 proviral loads have been shown to be an independent risk factor. Although conventional chemotherapeutic regimens used against other malignant lymphomas have been administered to ATL patients, the prognosis is often poor. In previous studies, we screened 459 extracts from 344 plants to isolate components exhibiting antiproliferative activity against HTLV-1-infected T-cell lines (MT-1 and MT-2). In our continuing search for potential anti-HTLV-1 natural products, 15 extracts of Asclepiadaceae plants were further tested against MT-1 and MT-2 cells. The MeOH extract of aerial parts of Tylophora tanakae showed antiproliferative activity. Activity-guided fractionation resulted in the isolation of 6 phenanthroindolizidine alkaloids (including a new compound), and we examined their antiproliferative activity against MT-1 and MT-2 cells. The EC50 value of some of the alkaloids was in the low nanomolar range, comparable to that of the clinically used antineoplastic drug doxorubicin. Structure-activity relationship analyses suggested that a 14β-hydroxy moiety is essential for activity against HTLV-1-infected T cells. In contrast, the presence of a 2-methoxy moiety, a 7-methoxy moiety, or an N-oxide moiety appears to reduce the potency of the antiproliferative activity against HTLV-1-infected T cells.

  5. Avaliação da efetividade do método de Tanaka-Johnston para predição do diâmetro mésio-distal de caninos e pré-molares não-irrompidos Evaluation of the effectiveness of the Tanaka-Johnston method for prediction of the mesiodistal diameter of unerupted canines and premolars

    Directory of Open Access Journals (Sweden)

    Viviane Maria Teixeira MARCHIONNI

    2001-03-01

    Full Text Available No presente estudo, os autores avaliaram o método de predição de Tanaka-Johnston com o objetivo de verificar sua efetividade para os lados direito e esquerdo, para ambos os sexos e para as raças branca, mulato claro, mulato médio, mulato escuro e negra, na cidade de Salvador - Bahia. Com o auxílio de um paquímetro digital, mediu-se o diâmetro mésio-distal dos incisivos inferiores permanentes, caninos e pré-molares, já irrompidos na cavidade bucal, de 98 indivíduos (45 do sexo masculino e 53 do sexo feminino, com idade variando entre 13 e 29 anos. Através de testes estatísticos, compararam-se os resultados obtidos a partir da aplicação das fórmulas de Tanaka-Johnston com os valores reais. Após análise dos resultados, observou-se que a correlação entre os valores estimados pela técnica de Tanaka-Johnston e os valores reais foram maiores para o sexo feminino que para o sexo masculino. Em relação à raça, os coeficientes de correlação foram satisfatórios para todas, sendo maior no arco dentário superior para a raça mulato escuro (0,67 e no arco dentário inferior para a raça mulato claro (0,74. Considerando-se os lados, os achados revelaram um maior coeficiente de correlação para o arco dentário inferior do lado esquerdo (0,61. Pôde-se concluir, neste trabalho, que o método de Tanaka-Johnston, apesar de ter sido preconizado a partir de uma amostra de descendentes europeus, é indicado para predição do diâmetro mésio-distal de caninos e pré-molares não-irrompidos para diferentes raças, sexos e lados dos arcos dentários na amostra estudada.In the present study, the authors evaluated the Tanaka-Johnston method of prediction, with the objective of verifying its effectiveness for the right and left sides, for both genders and for the white, light mulatto, medium mulatto, dark mulatto and black races in the city of Salvador, Bahia. The mesiodistal diameter of the inferior permanent incisors, canines and

  6. CRECIMIENTO Y DESARROLLO DE LA LIMA ÁCIDA (Citrus latifolia Tanaka, cv. Tahití, EN SUELOS CON LIMITACIONES POR PROFUNDIDAD EFECTIVA, EN UN BOSQUE SECO TROPICAL GROWTH AND DEVELOPMENT OF LIME (Citrus latifolia Tanaka, cv. Tahiti, IN SOILS WITH LIMITATIONS BY EFFECTIVE DEPTH IN A TROPICAL DRY FOREST

    Directory of Open Access Journals (Sweden)

    Gabriel Fernando Ochoa Agudelo

    2012-06-01

    Full Text Available Resumen. Se evaluó la evolución de la biomasa, la distribución diferencial de ésta entre los órganos y algunos parámetros del crecimiento y desarrollo, de la lima ácida (Citrus latifolia Tanaka, cv. Tahití, injertada sobre Carrizo y Kryder. El cultivo se estableció en suelos con limitaciones por profundidad efectiva (PE entre 10 y 20 cm; las evaluaciones se realizaron a los 24, 32 y 39 meses después del trasplante. Se debe tener presente que el crecimiento de las raíces está condicionado a los atributos edáficos en donde se establecen los cultivos, en especial los perennes, en cuyo caso existen requerimientos mínimos de PE para el adecuado desarrollo de los árboles; se establecieron diferencias entre la biomasa acumulada, como consecuencia de ésta limitación. Al comparar el crecimiento de las plantas con la PE se evidenció que los individuos que crecieron en suelos con PE de 20 cm, presentaron un desarrollo relativamente semejante a plantaciones sin limitaciones de este tipo; mientras que, en suelos con PE inferior a 10 cm, la respuesta fue 3 a 5 veces menor.Abstract. It was evaluated the evolution of biomass, its differential distribution among the organs and some parameters of growth and development of acid lime (Citrus latifolia Tanaka, cv. Tahiti, grafted on Carrizo and Kryder patterns. The plants were established in soils with limitations by its effective depth (ED, which ranged between 10 and 20 cm. Assessments were effectuated at 24, 32 and 39 months after transplantation. It is must to keep in mind that root growth is conditioned to the soil attributes of the site where the crops are established, especially in the case of perennials, which have requirements of minimum PE in order to achieve an adequate development. Differences were established between biomass accumulated as a result of the limitation in effective depth. When comparing the growth of plants with ED, we found that the individuals that grew up in soils with

  7. Auraptene, a Major Compound of Supercritical Fluid Extract of Phalsak (Citrus Hassaku Hort ex Tanaka, Induces Apoptosis through the Suppression of mTOR Pathways in Human Gastric Cancer SNU-1 Cells

    Directory of Open Access Journals (Sweden)

    Jeong Yong Moon

    2015-01-01

    Full Text Available The supercritical extraction method is a widely used process to obtain volatile and nonvolatile compounds by avoiding thermal degradation and solvent residue in the extracts. In search of phytochemicals with potential therapeutic application in gastric cancer, the supercritical fluid extract (SFE of phalsak (Citrus hassaku Hort ex Tanaka fruits was analyzed by gas chromatography-mass spectrometry (GC-MS. Compositional analysis in comparison with the antiproliferative activities of peel and flesh suggested auraptene as the most prominent anticancer compound against gastric cancer cells. SNU-1 cells were the most susceptible to auraptene-induced toxicity among the tested gastric cancer cell lines. Auraptene induced the death of SNU-1 cells through apoptosis, as evidenced by the increased cell population in the sub-G1 phase, the appearance of fragmented nuclei, the proteolytic cleavage of caspase-3 and poly(ADP-ribose polymerase (PARP protein, and depolarization of the mitochondrial membrane. Interestingly, auraptene induces an increase in the phosphorylation of Akt, which is reminiscent of the effect of rapamycin, the mTOR inhibitor that triggers a negative feedback loop on Akt/mTOR pathway. Taken together, these findings provide valuable insights into the anticancer effects of the SFE of the phalsak peel by revealing that auraptene, the major compound of it, induced apoptosis in accompanied with the inhibition of mTOR in SNU-1 cells.

  8. Estudo de validação das equações de Tanaka e de Kawasaki para estimar a excreção diária de sódio através da coleta da urina casual

    Directory of Open Access Journals (Sweden)

    José Geraldo Mill

    2015-12-01

    Full Text Available RESUMO: Objetivo: Validar as fórmulas de Tanaka e Kawasaki para cálculo do consumo de sal pela relação sódio/creatinina na urina casual. Métodos: Foram estudados 272 adultos (20 - 69 anos, 52,6% de mulheres com coleta urinária de 24 h e duas coletas casuais no mesmo dia (em jejum - casual 1 - e fora do jejum - casual 2. Antropometria, pressão arterial e coleta de sangue foram obtidos no mesmo dia. A concordância entre o consumo de sal estimado pela urina de 24 h e pela urina casual foi feita por Pearson (r e Bland & Altman. Resultados: O consumo médio de sal medido pela urina de 24 h foi de 10,4 ± 5,3 g/dia. A correlação entre a excreção de sódio na urina de 24 h e a estimada pela urina casual 1 ou 2, respectivamente, foi apenas moderada, tanto por Tanaka (r = 0,51 e r = 0,55; p < 0,001 como por Kawasaki (r = 0,52 e r = 0,54; p < 0,001. Observa-se subestimação crescente dos valores estimados em relação ao medido com o aumento do consumo de sal pela fórmula de Tanaka e, ao contrário, superestimação ao usar a fórmula de Kawasaki. As fórmulas estimam adequadamente o consumo diário de sal (diferença entre sal medido e estimado de, no máximo, 1 g/dia somente com consumo entre 9 - 12 g/dia (Tanaka e 12 - 18 g/dia (Kawasaki. Conclusão: A coleta de urina casual estima adequadamente o consumo de sal apenas nos indivíduos próximos à média populacional.

  9. On the Prediction of Mechanical Behavior of Particulate Composites Using an Improved Mori-Tanaka Method

    Science.gov (United States)

    1997-01-01

    ICNT.EQ.1)THEN CALL CALCIO (IABORT) CALL CALCCV(FDBND,IPOIS,IABORT) CALL CMPRPO(IKIND,IMORI,IABORT) ELSE END IF CALL CMPRP(CONCI,CONCV,YMULT,CAVG...IR+1 END IF GOTO 20 END IF RA(I) = RRA RB(I) = RRB RC(I) = RRC IRD(I) = IRRD GOTO 10 END SUBROUTINE CALCIO (IABORT) C==== calculate the

  10. Analysis of Particulate Composite Behavior Based on Nonlinear Elasticity and an Improved Mori-Tanaka Theory

    Science.gov (United States)

    1998-09-01

    RE11JRN C changed this block so that any variables that depend on aatrix C modulus calculated each time nev strain is available CALL CALCIO (STNTMP...PRBSRV / * NPTMX•O/ SORRAD /NPTMX•OI SORPAR /NPTMX•O/ SORVLP /NPTMX•O/ * IPDIST /NPTMX*O/ END SUBROUTINE CALCIO (STNTMP,IAUG,IABORT) C...found in Appendix E) RETURN END SUBROUTINE SORT3(N,RA,RB,RC,IRD) (subroutine details may be found in Appendix E) END SUBROUTINE CALCIO (STNTMP,IAUG

  11. La inocuidad alimentaria en el mercado Mexicano de Limón Persa (Citrus latifolia tanaka)

    OpenAIRE

    Herbert Ruiz, Marlene

    2012-01-01

    La globalización comercial exige que los mercados mundiales de productos agroalimentarios observen prácticas de inocuidad en sus productos: libres de contaminantes químicos, biológicos y físicos. En ese contexto, México modificó el 26 de julio de 2007 la Ley Federal de Sanidad Vegetal (LFSV), la cual ahora tiene como objetivo la aplicación, verificación y certificación de los sistemas de reducción de riesgos de contaminación en la producción y empaque de vegetales. El obje...

  12. Composição química e atividade antimicrobiana do óleo essencial e anatomia foliar e caulinar de Citrus limettioides Tanaka (Rutaceae

    Directory of Open Access Journals (Sweden)

    Larissa Teodoro Alves Lopes

    2013-12-01

    Full Text Available Citrus limettioides (Rutaceae é utilizada popularmente para tratamento da sinusite, e também como antitérmica e hipotensora. Este trabalho teve como objetivos: identificar os constituintes dos óleos essenciais da folha e da casca dos frutos de C. limettioides; avaliar a atividade antimicrobiana dos óleos essenciais da folha e da casca dos frutos e realizar o estudo anatômico da folha e caule jovem. Os óleos essenciais foram obtidos por hidrodestilação em aparelho de Clevenger modificado e analisados por CG-EM. A concentração inibitória mínima (CIM foi determinada utilizando o método de microdiluição em caldo frente a bactérias Gram-positivas, Gram-negativas e fungos. Para o estudo anatômico foram realizados cortes histológicos a mão livre e as secções foram coradas com azul de Alcian/ safranina, reagente de Steinmetz, lugol e analisados em microscopia de luz. O linalol foi o componente majoritário no óleo essencial das folhas (36,88 a 45,15% e o limoneno no óleo da casca dos frutos (70,60 a 75,18%. O óleo essencial das folhas apresentou CIM de 2000 µg/mL frente às bactérias e nenhuma atividade frente aos fungos. O óleo essencial da casca dos frutos não apresentou atividade antimicrobiana. A folha é hipoestomática, predominando os estômatos anomocíticos; o mesofilo é dorsiventral com parênquima paliçádico bisseriado e parênquima lacunoso com 11 camadas de células. Cavidades secretoras foram observadas no mesofilo da folha, no pecíolo e no caule, enquanto cristais prismáticos foram identificados em todas as estruturas da folha e do caule. Os dados obtidos no estudo microscópico podem auxiliar na identificação taxonômica desta planta e na avaliação da autenticidade da droga vegetal.

  13. Low BMI at age 20 years predicts gestational diabetes independent of BMI in early pregnancy in Japan: Tanaka Women's Clinic Study.

    Science.gov (United States)

    Yachi, Y; Tanaka, Y; Nishibata, I; Sugawara, A; Kodama, S; Saito, K; Sone, H

    2013-01-01

    Maternal obesity and weight gain since early adulthood are known predictors of gestational diabetes in Western countries. However, their impact has not been evaluated well in Asia, where mean BMI levels are generally lower than in Western countries. We therefore examined the associations of BMI at age 20 years and BMI change since age 20 years with the risk of gestational diabetes in Japanese pregnant women. Six hundred and twenty-four consecutive pregnant women without recognized diabetes before pregnancy, whose initial obstetric clinic visit was before 13 weeks' gestation, were prospectively observed. Weight at age 20 years was self-reported. Baseline height and weight measurements were obtained at the initial obstetric visit. Multivariate logistic regression analysis estimated the risk of incident gestational diabetes for BMI change since 20 years and BMI at age 20 years. Twenty-eight women developed incident gestational diabetes. By multivariate logistic regression analysis that adjusted for maternal age, parity and baseline BMI, we observed a statistically significant inverse association between BMI at age 20 years and incidence of gestational diabetes (odds ratio 0.68, 95% CI 0.51-0.92). Similarly, when we assessed the association of BMI change since age 20 years, adjusted for maternal age and parity, BMI change was associated with an increased risk of gestational diabetes (odds ratio 1.26, 95% CI 1.03-1.53). When we focused on the threshold of risk of gestational diabetes, women with BMI at 20 years of less than 18 kg/m(2) had a 6.30-fold (2.26-17.59) greater risk than women with both BMI at age 20 years of 18 kg/m(2) or more and BMI change since age 20 years of less than 1.85. Both low BMI at age 20 years and BMI change since age 20 years were significantly associated with increased risk of incident gestational diabetes. © 2012 The Authors. Diabetic Medicine © 2012 Diabetes UK.

  14. Contexto y Caracterización de la Cadena de Suministro del Limón Persa (Citrus latifolia Tanaka) en Veracruz-México

    OpenAIRE

    Gregorio Fernández-Lambert; Alberto Antonio Aguilar-Lasserre; Gustavo Martínez-Castellanos; María Leocelia Guadalupe Ruvalcaba-Sánchez; Juan Gabriel Correa-Medina; José Luis Martínez-Flores

    2015-01-01

    Esta investigación se realiza en el Distrito Citrícola de Martínez de la Torre, Ver., con alcance a los municipios de Álamo Temapache, y Cuitláhuac en Veracruz, y reporta el contexto e integración de la cadena de suministro del limón persa. El estudio de sus eslabones permitió identificar las problemáticas de abastecimiento, operación y distribución en dicha cadena. A partir de entrevistas abiertas no estructuradas a especialistas, técnicos, productores y empresarios, así como la consult...

  15. Scientific Misconduct and Social Media: Role of Twitter in the Stimulus Triggered Acquisition of Pluripotency Cells Scandal.

    Science.gov (United States)

    Sugawara, Yuya; Tanimoto, Tetsuya; Miyagawa, Shoko; Murakami, Masayasu; Tsuya, Atsushi; Tanaka, Atsushi; Kami, Masahiro; Narimatsu, Hiroto

    2017-02-28

    The academic scandal on a study on stimulus‑triggered acquisition of pluripotency (STAP) cells in Japan in 2014 involved suspicions of scientific misconduct by the lead author of the study after the paper had been reviewed on a peer‑review website. This study investigated the discussions on STAP cells on Twitter and content of newspaper articles in an attempt to assess the role of social compared with traditional media in scientific peer review. This study examined Twitter utilization in scientific peer review on STAP cells misconduct. Searches for tweets and newspaper articles containing the term "STAP cells" were carried out through Twitter's search engine and Nikkei Telecom database, respectively. The search period was from January 1 to July 1, 2014. The nouns appearing in the "top tweets" and newspaper articles were extracted through a morphological analysis, and their frequency of appearance and changes over time were investigated. The total numbers of top tweets and newspaper articles containing the term were 134,958 and 1646, respectively. Negative words concerning STAP cells began to appear on Twitter by February 9-15, 2014, or 3 weeks after Obokata presented a paper on STAP cells. The number of negative words in newspaper articles gradually increased beginning in the week of March 12-18, 2014. A total of 1000 tweets were randomly selected, and they were found to contain STAP-related opinions (43.3%, 433/1000), links to news sites and other sources (41.4%, 414/1000), false scientific or medical claims (8.9%, 89/1000), and topics unrelated to STAP (6.4%, 64/1000). The discussion on scientific misconduct during the STAP cells scandal took place at an earlier stage on Twitter than in newspapers, a traditional medium. ©Yuya Sugawara, Tetsuya Tanimoto, Shoko Miyagawa, Masayasu Murakami, Atsushi Tsuya, Atsushi Tanaka, Masahiro Kami, Hiroto Narimatsu. Originally published in the Journal of Medical Internet Research (http://www.jmir.org), 28.02.2017.

  16. Influência de substratos na formação dos porta-enxertos: limoeiro-Cravo (Citrus limonia Osbeck e tangerineira-Cleópatra (Citrus reshni Hort. Ex Tanaka em ambiente protegido

    Directory of Open Access Journals (Sweden)

    JABUR MARCOS ANTÔNIO

    2002-01-01

    Full Text Available Visando a estudar o efeito do substrato na produção de porta-enxertos de limoeiro-Cravo e tangerineira-Cleópatra em tubetes sob ambiente protegido, conduziu-se este trabalho na Faculdade de Ciências Agrárias e Veterinárias de Jaboticabal-UNESP. O estudo foi realizado em ambiente coberto com sombrite preto sem proteção lateral, adotando-se delineamento inteiramente casualizado, em esquema fatorial 5x2, 4 repetições e 20 sementes por parcela. Utilizaram-se os substratos húmus de minhoca oriundo de esterco de curral (H% e vermiculita média (V%, sendo S1=H0 V100; S2=H25 V75; S3=H50 V50; S4=H75 V25 e S5=H100 V0. Avaliaram-se o número de plântulas emergidas, altura das plantas, diâmetro do caule, massas fresca e seca de raiz e parte aérea. Observaram-se resultados estatisticamente significativos para diâmetro do caule, aos 104 e 118 dias após a semeadura (DAS entre espécies, com superioridade de Cravo em relação a Cleópatra, porém não aos 132 DAS. Não foi constatada diferença significativa entre os substratos. Quanto à massa fresca de parte aérea, nenhuma diferença estatística ocorreu entre as espécies; porém, quanto aos substratos, S3 mostrou-se superior a S1, não diferindo, entretanto, dos demais. Embora a análise estatística não tenha mostrado diferenças significativas entre os tratamentos para os outros parâmetros analisados, S3 destacou-se entre os substratos testados.

  17. Estudo experimental do limão Tahiti (Citrus latifólia Tanaka: composição físico-química e de minerais da polpa in natura e do resíduo albedo

    Directory of Open Access Journals (Sweden)

    Kátia Davi Brito

    2017-12-01

    Full Text Available The present work aimed to evaluate the physical-chemical and mineral parameters of the in natura pulp and the albedo residue of the Tahiti lemon. The pulp was extracted on a stainless steel horizontal removing device and refined in a sieve with a mesh size less than 1.0 mm. The albedo residue was separated and manually dried in a kiln with forced air circulation at a temperature of 55 ± 2°C until constant mass. The physico-chemical analyzes for the pulp in natura were: total solids (TS, soluble solids (°Brix, titratable acidity (TA, pH, vitamin C, total and reducing sugars, moisture, ashes and water activity. For the dry albedo, moisture, pH, ashes, water activity, protein, reducing sugars (RS and pectin were evaluated. The mineral constituents consisted on the evaluation of the centesimal composition of calcium (Ca, potassium (K, phosphorus (P, manganese (Mn, iron (Fe, zinc (Zn and copper (Cu for the in natura pulp and dry albedo residue of Tahiti lemon. Regarding the physical-chemical and mineral quality parameters, results were satisfactory. Therefore, the study of Tahiti lemon provided essential information on the availability of nutrients, so as to provide the consumer with new products derived from the Tahiti lemon and also to add economic value to the fruit.

  18. ESTIMACIÓN DE LA DEMANDA DE IMPORTACIONES DE LIMÓN PERSA (Citrus latifolia tanaka EN ESTADOS UNIDOS PROCEDENTES DE MÉXICO (1994-2008

    Directory of Open Access Journals (Sweden)

    Yolanda Sanchez Torres

    2011-07-01

    Full Text Available En 2008, México figuraba como el segundo productor mundial (14.94% de limones y el primero como exportador (20.5%, principalmente de limón persa, por lo que el objetivo de la investigación fue identificar y valorar aquellos factores que determinan la demanda de importaciones de limón persa en Estados Unidos, principal mercado destino (94.7%. Bajo el supuesto de que dicho mercado ofrece una capacidad real de expansión para los productores mexicanos de este cultivo, se formuló un modelo de regresión múltiple, considerando el ingreso, tipo de cambio (peso/dólar, precio unitario de importación y la demanda de importaciones,  estimado por el método de Mínimos Cuadrados Ordinarios (MCO; con datos anuales del  periodo 1994-2008, obteniendo también las elasticidades de la demanda. La variable de mayor  respuesta fue el ingreso con una elasticidad de  3.8, clasificando al limón persa como un bien normal superior; seguido del tipo de cambio  (0.83 y el precio (-0.666. Se concluyó, que es factible mantener el nivel de crecimiento actual de demanda de importaciones de limón persa, del 9.3% promedio anual, debido a que el incremento requerido en el ingreso real de Estados Unidos sería del 2.45% (ceteris paribus, contra el crecimiento observado del 2.9% en el periodo de estudio.

  19. Análisis del comportamiento de la demanda de importaciones de limón persa (Citrus latifolia tanaka) y mexicano (Citrus aurantifolia swingle) en los Estados Unidos

    OpenAIRE

    Sánchez Torres, Yolanda

    2011-01-01

    La agricultura mexicana en la década de los setentas inicia un proceso de expansión en la producción de frutas y hortalizas; y con ello la relevancia de frutas de clima tropical en el mercado mundial. Para 2008 México ocupaba el segundo lugar como productor mundial (14.94%) de limones y el primero como exportador (20.5%), teniendo dos variedades altamente competitivas: el limón mexicano, orientado al mercado nacional (96.2%) y el limón persa vinculado al mercado internacional (50.3%). El obj...

  20. The Brachistochrone Curve: The Problem of Quickewst Descent (Special Issue of the Faculty of Human Sciences; Studies Presented to Prof. Mieko Sakurai, Prof. Kunio Tanaka, Prof. Teruo Tarumoto on Their Retirement)

    OpenAIRE

    西山,豊

    2011-01-01

    This article presents tyhe problem of quickest descent, or the Brachistochrone curve, that may be solved by the calculus of variations and the Euler-Lagrange equation. The cycloid is the quickest curve and also has the property of isochronism by which Huygens improved on Galileio's pendulum.

  1. Using KenKen to Build Reasoning Skills

    Science.gov (United States)

    Reiter, Harold B.; Thornton, John; Vennebush, G. Patrick

    2013-01-01

    KenKen® is the new Sudoku. Like Sudoku, KenKen requires extensive use of logical reasoning. Unlike Sudoku, KenKen requires significant reasoning with numbers and operations and helps develop number sense. The creator of KenKen puzzles, Tetsuya Miyamoto, believed that "if you give children good learning materials, they will think and learn and…

  2. Jaapani kilpkonn kogub Lenini küljes emotsioone / Teet Roosaar

    Index Scriptorium Estoniae

    Roosaar, Teet, 1963-

    2002-01-01

    Jaapani skulptor Atsuo Okamoto raius graniidist hiigelsuure kilpkonna, mille ta jagas 49-ks tükiks, mis peavad maailma eri paigus aasta jooksul selle piirkonna õhku, värve, emotsioone ja ajalugu koguma. Baltikumi esindab selles projektis Pärnu ja 5,5 kg graniiditükk kinnitati 31. jaan. Pärnus peata Lenini kuju külge. vt. http://www2.tokai.or.jp/world-turtle/e/project_e.html

  3. Caracterização da composição química e do rendimento dos resíduos industriais do limão Tahiti (Citrus latifolia Tanaka Chemical composition and Tahiti lime industrial residues output characterization

    Directory of Open Access Journals (Sweden)

    Luciana Maria Vieira Lopes Mendonça

    2006-12-01

    Full Text Available A indústria de sucos utiliza apenas de 40% a 50% dos frutos, sendo o restante considerado resíduo industrial. Estes resíduos apresentam-se ricos em alguns componentes como pectina, vitamina C e fibras dietárias que o tornam matéria-prima para a indústria alimentícia, farmacêutica e de rações. Visando o aproveitamento dos resíduos industriais do limão Tahiti para tais fins, caracterizou-se a composição centesimal, os teores de fibras, de pectina e de vitamina C presentes nas frações flavedo, albedo e bagaço do fruto. A partir da avaliação dos dados pelo teste de Scott Knott 5% de probabilidade, observou-se que os teores de cinzas, pectina, proteína, vitamina C e fibra bruta foram diferentes no flavedo, albedo e bagaço. O resíduo industrial do limão Tahiti tem um grande potencial para uso em formulação de rações para animais, dada a sua composição química, assim como poderá ser usado para a extração de fibras, pectina, vitamina C e óleos.The juice industry makes use of only 40 to 50% of the fruit and its remainder is considered industrial residue. This residue is very rich in some of its compounds such as pectin, ascorbic acid and dietary fibers making it into raw material for the food industry, pharmaceutics and animal food. With the purpose of using the industrial residue of Tahiti lime for such purposes, the centesimal composition, fiber contents, pectin and vitamin C contained in flavedo fractions, albedo and fruit pulp were characterized. From the evaluation for the Scott Knott's test to 5% of probability, it was observed that the ash content, pectin, protein, vitamin C and rude fiber were different for flavedo, albedo and pulp. Tahiti lime industrial residue has a great potential for animal food formulation, considering its chemical composition, as well as the fact that it can be used for fiber extraction, pectin, vitamin C and oils.

  4. A case of Alagille syndrome complicated by intraocular lens subluxation and rhegmatogenous retinal detachment

    OpenAIRE

    Fukumoto, Masanori; Ikeda,Tsunehiko; Sugiyama,Tetsuya; Ueki,Mari; Isizaki,Eisuke; Satou,Takaki

    2013-01-01

    Masanori Fukumoto, Tsunehiko Ikeda, Tetsuya Sugiyama, Mari Ueki, Takaki Sato, Eisuke Ishizaki Department of Ophthalmology, Osaka Medical College, Takatsuki City, Japan Abstract: This case report describes a case of Alagille syndrome with developing intraocular lens subluxation and rhegmatogenous retinal detachment 4 years after cataract surgery. A 15-year-old female patient with Alagille syndrome-associated cataracts in both eyes underwent phacoemulsification aspiration and intraocular lens ...

  5. Lens dislocation has a possible relationship with laser iridotomy

    OpenAIRE

    Mutoh, Tetsuya; Barrette, Kevin F; Matsumoto, Yukihiro; Chikuda, Makoto

    2012-01-01

    Tetsuya Mutoh,1,2 Kevin F Barrette,2 Yukihiro Matsumoto,1 Makoto Chikuda11Department of Ophthalmology, Dokkyo Medical University Koshigaya Hospital, Koshigaya City, Saitama, Japan; 2Department of Ophthalmology, Boston University School of Medicine, Boston, MA, USAAbstract: We report our recent experience of four eyes with spontaneous lens dislocation in four patients with no history of trauma or any systemic disease associated with zonular dialysis. Lens dislocation developed with 0.5 to 6 mo...

  6. A new species of Toxorhynchites mosquito (Diptera: Culicidae) from the Ryukyu Archipelago, Japan.

    Science.gov (United States)

    Toma, T; Miyagi, I; Tanaka, K

    1990-05-01

    Toxorhynchites (Toxorhynchites) okinawensis Toma, Miyagi, and Tanaka, n. sp., from Okinawajima, the Ryukyu Archipelago, Japan, is described and illustrated. Its taxonomy, bionomics, and zoogeography are discussed briefly.

  7. Oxygen uptake kinetics Of Pseudomonas sp. strain VB grown under ...

    African Journals Online (AJOL)

    Fred

    2004-07-22

    Jul 22, 2004 ... 1996). Its diverse uses makes the substance ubiquitous as an environmental xenobiotic which has considerable implications within the global biosphere. The microbial mixed cultural degradation of 2- methoxyethanol under anaerobic conditions has been reported (Tanaka et al., 1986; Tanaka and Pfennig,.

  8. Simple Interactions

    DEFF Research Database (Denmark)

    and international public. The exhibition Simple Interactions. Sound Art from Japan presents works by 9 Japanese artists at the Museum of Contemporary Art Roskilde. The exhibition mixes installations, performances and documentations, all of which examine how simple interactions can create complex systems...... and patterns. Works and performances by the following artists are presented: Yuji DOGANE - Yukio FUJIMOTO - Atsuhiro ITO - Soichiro MIHARA - Atsushi NISHIJIMA - Jio SHIMIZU - Toshiya TSUNODA - Tetsuya UMEDA - Miki YUI The book presents texts by Minoru HATANAKa; Takashi KOJIMA, Rune SØCHTING and the editors...

  9. Characterization of α-amylase produced by the endophytic strain of ...

    African Journals Online (AJOL)

    Tuoyo Aghomotsegin

    2016-07-13

    Universidade Federal do Parana. Curitiba, Brasil. Onofre et al. 1519. Tanaka A, Hoshino E (2002). Thermodynamic and activation parameters for the hydrolysis of amylose with Bacillus α-amylases in a diluted anionic surfactant ...

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

    Indian Academy of Sciences (India)

    Author Affiliations. I Tanaka1 2. Neutron Science Research Center, Japan Atomic Energy Research Institute (JAERI), Tokai, Ibaraki 319-1195, Japan; Faculty of Engineering, Ibaraki University, Hitachi, Ibaraki 316-8511, Japan ...

  11. Neutron protein crystallography in JAERI

    Indian Academy of Sciences (India)

    Author Affiliations. I Tanaka1 2. Neutron Science Research Center, Japan Atomic Energy Research Institute (JAERI), Tokai, Ibaraki 319-1195, Japan; Faculty of Engineering, Ibaraki University, Hitachi, Ibaraki 316-8511, Japan ...

  12. Catecholato complexes of cobalt and nickel with 1,4-disubstituted-1 ...

    Indian Academy of Sciences (India)

    Chem. 21 2403. 10. Klein H-F, Auer E, Dal A, Lemke U, Lemke M, Jung T,. Rohr C, Florke U and Haupt H-J 1999 Inorg. Chim. Acta. 287 167. 11. Ohtsu H and Tanaka K 2004 Angew. Chem., Int. Ed. 43. 6301. 12. Ohtsu H and Tanaka K 2005 Chem. Eur. J. 11 3420. 13. Belostotskaya I S, Kommisarova N L, Dzhuaran E V and.

  13. C P Singh

    Indian Academy of Sciences (India)

    ... Simon-Gillo C P Singh V Singh M Sivertz A Soldatov R A Soltz S Sorensen P W Stankus N Starinsky P Steinberg E Stenlund A Ster S P Stoll M Sugioka T Sugitate J P Sullivan Y Sumi Z Sun M Suzuki E M Takagui A Taketani M Tamai K H Tanaka Y Tanaka E Taniguchi M J Tannenbaum J Thomas J H Thomas T L Thomas ...

  14. Comparison of two non-radiographic techniques of mixed dentition space analysis and evaluation of their reliability for Bengali population.

    Science.gov (United States)

    Dasgupta, Barun; Zahir, Shabnam

    2012-09-01

    Mixed dentition arch analysis system is an important criterion in determining the type of orthodontic treatment plan. Different mixed dentition arch analysis system are available and among them both Moyer's and Tanaka-Jhonson method of space analysis was developed for North American children. Anthropological study reveals that tooth size varies among different ethnicities The present study was performed to determine the reliability of Moyer's and Tanaka-Jhonson's method of mixed dentition arch analysis system among Bengali population. To perform the comparative evaluation of the two mixed dentition space analysis system among Bengali population. Dental casts of maxillary and mandibular arches of 70 Bengali children with permanent dentitions were fabricated. The mesiodistal crown dimensions of all erupted permanent incisors, canines, and premolars were measured with digital callipers. For particular sum of mandibular incisors, Moyer's and Tanaka-Jhonson's mixed dentition arch analysis were calculated and further statistical analysis was carried on. Descriptive statistics including the mean, standard deviation, and minimum and maximum values, unpaired't' tests, correlation coefficient "r" were calculated and tabulated. Tanaka and Johnston regression equations under-estimated the mesiodistal widths of permanent canines and premolars. On the other hand, there were no statistically significant differences between actual mesiodistal widths of canines and premolars and the predicted widths from Moyers charts at the 50% level for the lower and upper arches, among Bengali population. The study suggested that both Moyer's and Tanaka-Jhonson's mixed dentition arch analysis are applicable in Bengali population but with little modification in their regression equation.

  15. GRL editors: 1986”1988

    Science.gov (United States)

    The leading rapid publication journal in the geophysical sciences is seeking candidates to succeed James C.G. Walker, whose term as editor-in-chief ends December 1985. AGU also seeks candidates to succeed the five regional editors: Rob Van der Voo, North America; Gaston J. Kockarts and William Lowrie, Europe; Tetsuya Sato, Asia; and Kurt Lambeck, Australia.AGU President Charles L. Drake has appointed a committee to recommend candidates for the 1986-1988 term. Resumes of those interested in serving in these influential and prestigious posts or letters of recommendation from those who wish to suggest candidates should be sent by February 15, 1985, to GRL Editor Search Committee, American Geophysical Union, 2000 Florida Ave., N.W., Washington, DC 20009.

  16. Meme media and meme market architectures knowledge media for editing distributing and managing intellectual resources

    CERN Document Server

    Tanaka, Y

    2003-01-01

    "In this book, Yuzuru Tanaka proposes a powerful new paradigm: that knowledge media, or "memes," operate in a way that closely resembles the biological function of genes, with their network publishing repository working as a gene pool to accelerate the evolution of knowledge shared in our societies. In Meme Media and Meme Market Architectures: Knowledge Media for Editing, Distributing, and Managing Intellectual Resources, Tanaka outlines a ready-to-use knowledge media system, supplemented with sample media objects, which allows readers to experience the knowledge media paradigm."--Jacket.

  17. Solvent-free microwave-mediated Michael addition reactions

    Indian Academy of Sciences (India)

    Unknown

    Bergmann E D, Ginsburg D and Pappo R 1959 Orga- nic React. 10 179. 4. House H O 1972 Modern synthetic reactions (ed.) W A Benjamin (New York: Amsterdam) p. 595. 5. Rosnati V, Saba A and Salimbeni A 1981 Tetrahe- dron Lett. 22 167. 6. Toda F, Takumi H, Nagami M and Tanaka K 1998. Hetrocycles 47 469. 7.

  18. Protective role of aqueous extract of Hibiscus sabdariffa (calyx ...

    African Journals Online (AJOL)

    USER

    2010-05-24

    May 24, 2010 ... The protective role of aqueous extract of Hibiscus sabdariffa (calyx) against potassium bromate induced tissue damage was investigated in rat tissues (brain, kidney, stomach, spleen, heart and liver). The rats were divided into ... diethylnitrosamine in the liver (Tanaka et al., 1993), 4- nitroquinone-1-oxide in ...

  19. Secondary metabolites from Nepeta juncea

    African Journals Online (AJOL)

    use

    2011-12-05

    Dec 5, 2011 ... Fuchino H, Saton T, Tanaka N (1995). Chemical evaluation of Betula species in Japan. I. constituents of Betula ermanii. Chem. Pharm. Bull. 43: 1937-1942. Gonzalez AG, Ferro EA, Ravelo AG (1987). Triterpenes from Maytenus horrid, Phytochemistry, 26: 2785-2788. Habib MR, Nikkon F, Rahman M (2007).

  20. Free asymmetric transverse vibration of polar orthotropic annular ...

    Indian Academy of Sciences (India)

    R. Narasimhan (Krishtel eMaging) 1461 1996 Oct 15 13:05:22

    Houmat A 2001 A sector Fourier p-element applied to free vibration analysis of sectorial plates. J. Sound Vibr. 243: 269–282. Irie T, Yamada G, Ito F 1979 Free vibration of polar orthotropic sector plates. J. Sound Vibr 67: 89–100. Irie T, Tanaka K, Yamada G 1988 Free vibration of a cantilever annular sector plate with curved ...

  1. Microwave-assisted synthesis and photoluminescence properties of ...

    Indian Academy of Sciences (India)

    2017-11-11

    Nov 11, 2017 ... Sasakura H 1984 Appl. Phys. Lett. 45 960. [5] Barrow W A, Coovert R E and King C N 1984 SID Sympo- sium Digest of Technical Papers, San Francisco, CA, USA, p 249. [6] Tanaka S, Shankar V, Shiiki M, Deguchi H and May K H. 1985 SID Symposium Digest of Technical Papers, Orlando,. FL, USA, p 255.

  2. Evolution of spectro-temporal features and X-ray variability

    Indian Academy of Sciences (India)

    H. SREEHARI

    2018-02-09

    Feb 9, 2018 ... sources (ULXs) which may harbour intermediate mass black holes (Feng & Soria 2011). GBH systems can be either persistent or outbursting (Tanaka & ..... the HID using a red color star. the black hole. The model considers that QPOs are gen- erated by the oscillation of this region. POS model is given by.

  3. Untitled

    African Journals Online (AJOL)

    Phytochemistry 31, 1553-1559. THOMSON, R. H. (1985). The Chemistry of Natural. Products, Chapman & Hall, New York, p. 175. YAMASAKI, K, KOHDA, H, KOBAYASHI, T,. KASA), R. and TANAKA, O. (1976). Structures of. Stevia diterpene-glucosides: Application of*C NMR. Tetrahedron Letters 13, 1005-1008. Received: ...

  4. Subaru/FOCAS Optical Spectroscopy for a possible IceCube-170922A counterpart TXS 0506+056

    Science.gov (United States)

    Morokuma, Tomoki; Tanaka, Yasuyuki T.; Ohta, Kouji; Matsuoka, Yoshiki; Yamashita, Takuji; Kato, Nanako

    2017-10-01

    We performed optical spectroscopic observations on September 30 and October 1, 2017 (UT) with the 8.2-m Subaru telescope and Faint Object Camera and Spectrograph (FOCAS) for TXS 0506+056 which is a possible counterpart to the IceCube-170922A high-energy neutrino event (Tanaka et al. 2017, ATel #10791).

  5. Drug-drug interation prediction between ketoconazole and anti-liver ...

    African Journals Online (AJOL)

    Aims: To predict the metabolic behavior and metabolism-based drug-drug interaction of gomisin G. Methods: ... Results: Gomisin G can be well docked into the activity site of CYP3A4, and distance between gomisin G the heme active site was 2.75 Å. To .... Fang ZZ, Krausz KW, Li F, Cheng J, Tanaka N, Gon- zalez FJ.

  6. High CpG island methylation ofp16 gene and loss of p16 protein ...

    Indian Academy of Sciences (India)

    Navya

    Curr Opin Immunol 21, 431-439.Majid,. S., Kikuno, N., Nelles, J., Noonan, E., Tanaka, Y., Kawamoto, K., et al. 2008 Genistein induces the. p21WAF1/CIP1 and p16INK4a tumor suppressor genes in prostate cancer cells by epigenetic mechanisms.

  7. Untitled

    Indian Academy of Sciences (India)

    ). The bands at 840cm, 540-620 cm, 470 cm and 350cm are observed in all glass compositions, suggesting that these glasses are built up of BiO pyramidal unit similar to BiO-CuO glasses. Mössbauer studies (Tanaka et al 1989) showed.

  8. Genome Sequence ofArcobactersp. Strain LA11, Isolated from the AbaloneHaliotis discus.

    Science.gov (United States)

    Mizutani, Yukino; Tanaka, Reiji

    2017-03-16

    Arcobacter sp. strain LA11 was isolated from the gut of the abalone Haliotis discus Here, we present the annotation and analysis of the draft genome of this strain, which is involved in nitrogen metabolism. Copyright © 2017 Mizutani and Tanaka.

  9. Efficient somatic embryo production of Limau madu ( Citrus ...

    African Journals Online (AJOL)

    Effects of N6-benzylaminopurine (BAP) concentration, initial cell density and carbon sources and concentrations for producing cell suspension and somatic embryos of Limau madu (Citrus suhuiensis Hort. ex Tanaka) were investigated using cell suspension culture. Cells were first inoculated into Murashige and Skoog (MS) ...

  10. Elevated level of polysaccharides in a high level UV-B tolerant cell ...

    African Journals Online (AJOL)

    Jane

    2011-04-26

    Apr 26, 2011 ... Key words: Bupleurum scorzonerifolium Willd, polysaccharides, in vitro culture, UV-B tolerance, antioxidant. ..... The number of calli formed from protoplasts of the anti-UV-B cell line after different generation of subculture. Figure 4. ..... Tanaka A, Sakamoto A, Ishigaki Y, Nikaido O, Sun G, Hase Y, Shikazono.

  11. High Pressure Effects on Lipid Oxidation of Extra Virgin Olive Oils

    African Journals Online (AJOL)

    and to modify some functional characteristics of foods (fish, ... pressurized foods. TANAKA et al. (1990) studied freeZe- dried sardines and sardine oils treated at. 180 Mpa for 60 minutes. In this case, the medium pressure treatment produced the formation and an ... containers (nylon/PE films - 100 ml.) and treated at 700 Mpa ...

  12. Electrochemical investigation of the effect of some organic ...

    Indian Academy of Sciences (India)

    PRAKASH

    Kuramitz H, Ugawara K S, Kawasaki M, Hasebe K, Nakamura H and. Tanaka S 1999 Electrocatalytic reduction of hemoglobin at a self- assembled monolayer electrode containing redox dye, Nile blue as an electron-transfer mediator, Anal. Sci. 15 15589–15592. Laberge M, Kövesi I, Yonetani T and Fidy J 2005 R-state.

  13. Shallow-water and not deep-sea as most plausible origin for cave-dwelling Paramisophria species (Copepoda: Calanoida: Arietellidae), with description of three new species from Mediterranean bathyal hyperbenthos and littoral caves

    NARCIS (Netherlands)

    Jaume, Damià; Cartes, Joan E.; Boxshall, Geoffrey A.

    2000-01-01

    Japan (Tanaka, 1967; Ohtsuka, 1985; Ohtsuka & Mitsuzumi, 1990; Ohtsuka et al., 1991), Australia (McKinnon & Kimmerer, 1985), and New Zealand (Othman & Greenwood, 1992). Records of species far from their ordinary ranges, such as those of Paramisophria cluthae T. Scott, 1897 from the Mediterranean

  14. Considerations on photochemical genotoxicity. II: Report of the 2009 International Workshop on Genotoxicity Testing Working Group

    NARCIS (Netherlands)

    Lynch, A.M.; Guzzie, P.J.; Bauer, D.; Gocke, E.; Itoh, S.; Jacobs, A.; Krul, C.A.M.; Schepky, A.; Tanaka, N.; Kasper, P.

    2011-01-01

    A workshop to reappraise the previous IWGT recommendations for photogenotoxicity testing [E. Gocke, L. Muller, P.J. Guzzie, S. Brendler-Schwaab, S. Bulera, C.F. Chignell, L.M. Henderson, A. Jacobs, H. Murli, R.D. Snyder, N. Tanaka, Considerations on photochemical genotoxicity: report of the

  15. Nobeli rahupreemia pälvisid tuumarelva leviku takistajad / Kaivo Kopli

    Index Scriptorium Estoniae

    Kopli, Kaivo

    2005-01-01

    Selle aasta Nobeli rahupreemia pälvisid Rahvusvaheline Aatomienergiaagentuur ja selle juht Mohamed ElBaradei. Norra Nobeli komitee selgitusest. Lisa: Fakte Nobeli rahupreemiast. Kommenteerivad: Terumi Tanaka, Shimon Peres, Hamid Reza Asefi, Aida ElBaradei, Hans Blix. Vt. samas: Õigusteadlasest tuumarelvade jahtija eelistab läbirääkimisi

  16. Effect of Hawthorn on Drosophila Melanogaster Antioxidant-Related ...

    African Journals Online (AJOL)

    Battez-lebegue S. Oxygen species scavenging activity of phenolic extracts from hawthorn fresh plant organs and pharmaceutical preparations. Arzneim-. Forsch, 1996; 46: 1086–1089. 13. Tonoki A , Kuranaga E , Tomioka T , Hamazaki J, Murata. S, Tanaka K , Miura M . Genetic evidence linking age-dependent attenuation ...

  17. Enhanced antioxidant defense after exogenous application of Ca ...

    African Journals Online (AJOL)

    Administrator

    2011-10-19

    Oct 19, 2011 ... rate of water loss from excised leaves. of growth leading .... immediately weighed with analytical balance to obtain fresh weight. (Wf). The leaf ..... Arabidopsis have found that K+ starvation induces ethylene synthesis, and that ethylene inhibits ABA action on stomatal closure (Tanaka et al., 2005). Thus, the.

  18. African Exporting Firms in the Turmoil of the Global Financial Crisis

    African Journals Online (AJOL)

    verena

    performance and management. Average economic growth was slashed from .... fragmented supply chains (Tanaka 2009, Yi,. 2009) may have magnified the impact of the ..... Logistic regression also called logit model is used for prediction of the probability of occurrence of an event by fitting data to a logit function logistic ...

  19. Isolation of fucoxanthin and fatty acids analysis of Padina australis ...

    African Journals Online (AJOL)

    GREGORY

    2011-12-16

    Dec 16, 2011 ... treatment of tumors and other cancer related problems ... nutraceutical properties, including: Antioxidant and ..... Suzuki R, Noguchi R, Hosokawa M, Miyashita K, Tanaka T. (2002). Dietary conjugated linolenic acid inhibits azoxymethane- induced colonic aberrant crypt foci in rats. Jpn J. Cancer Res. 93:.

  20. Microwave Assisted Synthesis and Photoluminescence Properties of ...

    Indian Academy of Sciences (India)

    46

    [5] Barrow W. A., Coovert R. E. and King C. N. (1984) SID Symposium Digest of Technical. Papers, San Francisco, CA, USA, 249. [6] Tanaka S., Shankar V., Shiiki M., Deguchi H., Kobayashi H. May (1985) SID. Symposium Digest to Technical Papers, Orlando, FL, USA, 255. [7] Kane J., Harty W. E., Ling M. and Yocom P. N. ...

  1. Understanding sex determination in the mouse: genetics ...

    Indian Academy of Sciences (India)

    gonadal poles in a paracrine fashion (Hiramatsu et al. 2010). .... a granulosa-like cell fate and the appearance of theca-like cells in mutant XY gonads. ..... and DNA repair. Trends Cell Biol. 22, 220–227. Nishino K., Hattori N., Tanaka S. and Shiota K. 2004 DNA methylation-mediated control of Sry gene expression in mouse.

  2. Two-electron Oxidation of a Twisted Non Anti-aromatic 40π ...

    Indian Academy of Sciences (India)

    PRACHI GUPTA, SANTOSH P PANCHAL and VENKATARAMANARAO G ANAND. ∗. Department of Chemistry ... synthesis of the first twisted 40π expanded isophlorin and also its two-electron oxidation to a 38π dication. It sustains the twisted .... Tanaka T, Aratani N, Lim J M, Kim K S, Kim D and. Osuka A 2011 Chem. Sci.

  3. Contributory role of adenosine deaminase in metabolic syndrome

    African Journals Online (AJOL)

    olayemitoyin

    Several metabolic pathways have been reported to be deregulated in the metabolic syndrome especially the immune system (Nieman et al, 1999). Lymphocyte numbers and proliferation responses were reported to be altered in obese subjects and genetically obese animals (Tanaka et al, 1998). Cytokine balance was also ...

  4. DMPD: Turning NF-kappaB and IRFs on and off in DC. [Dynamic Macrophage Pathway CSML Database

    Lifescience Database Archive (English)

    Full Text Available 18534908 Turning NF-kappaB and IRFs on and off in DC. Kaisho T, Tanaka T. Trends Immunol. 2008 Jul...naka T. Publication Trends Immunol. 2008 Jul;29(7):329-36. Epub 2008 Jun 3. Pathw

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

    Indian Academy of Sciences (India)

    Photon Interactions at High Energies (Lepton-Photon 2011) - Part II. pp 941-952 Neutrino Physics II. Recent neutrino oscillation results from T2K · H A Tanaka on behalf of the T2K Collaboration · More Details Abstract Fulltext PDF.

  6. Research Area 4: Electronics: A Special Event at the International Conference on Molecular Beam Epitaxy

    Science.gov (United States)

    2015-09-30

    F. Willig, W. Richter, Phys. Rev. B 61 (2000) R16335. [11] H. Tanaka, E. Colas , I. Kamiya, D.E. Aspnes, R. Bhat, Appl. Phys. Lett. 59 (1991) 3443. [12...al., c-erbB-2 sensing using AlGaN/GaN high electron mobility transistors for breast cancer detection, Appl. Phys. Lett. 92.19 (2008) (192103– 192103

  7. Inhibition of tobacco axillary bud differentiation by silencing CUP ...

    African Journals Online (AJOL)

    Yomi

    2012-02-23

    Feb 23, 2012 ... Eltayeb AE, Kawano N, Badawi GH, Kaminaka H, Sanekata T,. Shibahara T, Inanaga S, Tanaka K (2007). Overexpression of monodehydroascorbate reductase in transgenic tobacco confers enhanced tolerance to ozone, salt and polyethylene glycol stresses. Planta, 225 (5): 1255-1264. Greb T, Clarenz O, ...

  8. bithitiophene

    Indian Academy of Sciences (India)

    Spectrum One B, with an universal ATR attachment with a diamond and ZnSe crystal). Morphological investigations were performed with scanning electron ..... Skotheim T A, Reynolds J R and Elsenbaumer R L (eds.) 1998. Handbook of conducting polymers (New York: Marcel Dekker). 2nd edn. Tanaka K, Shichiri T and ...

  9. Kimono Fusion - ultratraditsioonilisest hüpermoodsaks / Kelly Kipper

    Index Scriptorium Estoniae

    Kipper, Kelly

    2010-01-01

    Näitus "Kimono Fusion - ultratraditsioonilisest hüpermoodsaks" Stockholmis Östasiatiska muuseumis 10. jaanuarini 2010. Eksponeeritakse kimonosid ja obisid (traditsioonilised kimonovööd) ning jaapani moekunstnike loomingut. Lähemalt Shin Tanaka, Shojono Tomo, duo Takuya Angel'i (Takuya Sawada koos abikaasa Akikoga), Kunihiko Morinaga, Suzuki Takayuki loomingust

  10. Comparison of two non-radiographic techniques of mixed dentition space analysis and evaluation of their reliability for Bengali population

    Directory of Open Access Journals (Sweden)

    Barun Dasgupta

    2012-01-01

    Full Text Available Context: Mixed dentition arch analysis system is an important criterion in determining the type of orthodontic treatment plan. Different mixed dentition arch analysis system are available and among them both Moyer′s and Tanaka-Jhonson method of space analysis was developed for North American children. Anthropological study reveals that tooth size varies among different ethnicities The present study was performed to determine the reliability of Moyer′s and Tanaka-Jhonson′s method of mixed dentition arch analysis system among Bengali population. Aims: To perform the comparative evaluation of the two mixed dentition space analysis system among Bengali population. Materials and Methods: Dental casts of maxillary and mandibular arches of 70 Bengali children with permanent dentitions were fabricated. The mesiodistal crown dimensions of all erupted permanent incisors, canines, and premolars were measured with digital callipers. For particular sum of mandibular incisors, Moyer′s and Tanaka-Jhonson′s mixed dentition arch analysis were calculated and further statistical analysis was carried on. Statistical analysis used: Descriptive statistics including the mean, standard deviation, and minimum and maximum values, unpaired′t′ tests, correlation coefficient "r" were calculated and tabulated. Results: Tanaka and Johnston regression equations under-estimated the mesiodistal widths of permanent canines and premolars. On the other hand, there were no statistically significant differences between actual mesiodistal widths of canines and premolars and the predicted widths from Moyers charts at the 50% level for the lower and upper arches, among Bengali population. Conclusions: The study suggested that both Moyer′s and Tanaka-Jhonson′s mixed dentition arch analysis are applicable in Bengali population but with little modification in their regression equation.

  11. Comportamento de catorze porta-enxertos para o limão eureka km 47 na região de Araraquara-SP Behaviour of fourteen rootstocks for eureka lemon [Citrus limon (L Burm. F. ] cv. km 47, in Araraquara, SP, Brazil

    Directory of Open Access Journals (Sweden)

    José Orlando de Figueiredo

    2005-04-01

    Full Text Available Foi avaliado o comportamento de 14 porta-enxertos para o limão 'Eureka km 47' [Citrus limon (L. Burm. f.], clone nucelar, em experimento instalado em 1991, na Fazenda Fittipaldi, Araraquara-SP. Os porta-enxertos foram: tangelos 'Orlando' e 'Seminole' (C. reticulata Blanco x C. paradisi Macfad., tangerinas 'Cleópatra' (C. reshni hort. ex Tanaka e 'Sunki' [C. sunki (Hayata hort. ex Tanaka], limões 'Cravo' (C. limonia Osbeck, 'Rugoso da África' (C. jambhiri Lush. e 'Volkameriano Catania 2' (C. volkameriana V. Ten. & Pasq., laranja 'Caipira DAC' [C. sinensis (L. Osbeck], laranja 'Azeda Doble Cálice' (C. aurantium L., trifoliatas 'EEL'e 'Kryder 8-5' [Poncirus trifoliata (L. Raf.], citrange 'Morton' [P. trifoliata (L. Raf. x C. sinensis (L. Osbeck], C. karna Raf. e C. pennivesiculata (Lush. Tanaka. As produções foram avaliadas no período de 1998 a 2002. As maiores produções médias em peso de frutos estiveram relacionadas aos porta-enxertos C. pennivesiculata e tangerina 'Cleópatra' (>220 kg/planta. Entre os porta-enxertos que induziram as mais baixas produções, estão C. karna, os dois tangelos, os dois trifoliatas e a 'Caipira DAC' (Fourteen rootstocks were compared in a trial started in 1991, for Eureka lemon cv. km 47, nucellar clone, in Araraquara, Brazil. The rootstocks tested were Orlando and Seminole tangelos (C. reticulata Blanco x C. paradisi Macfad., Cleopatra mandarin (C. reshni hort. ex Tanaka, Sunki mandarin [C. sunki (Hayata hort. ex Tanaka], Rangpur Lime (C. limonia Osbeck, Rough Lemon cv. African (C. jambhiri Lush., and Volkamerican cv Catania 2 (C. volkameriana V. Ten. & Pasq., sweet orange [C. sinensis (L. Osbeck] cv. Caipira DAC, sour orange (C. aurantium L., Poncirus trifoliata (L. Raf. cv. EEL, P. trifoliata (L. Raf. cv. Kryder 8-5, Morton citrange [P. trifoliata (L. Raf. x C. sinensis (L. Osbeck], C. karna Raf. and C. pennivesiculata (Lush. Tanaka. Yield was measured by weight of fruits per tree, for a period of

  12. Validation and Assessment of Three Methods to Estimate 24-h Urinary Sodium Excretion from Spot Urine Samples in High-Risk Elder Patients of Stroke from the Rural Areas of Shaanxi Province

    Directory of Open Access Journals (Sweden)

    Wenxia Ma

    2017-10-01

    Full Text Available Background: 24-h urine collection is regarded as the “gold standard” for monitoring sodium intake at the population level, but ensuring high quality urine samples is difficult to achieve. The Kawasaki, International Study of Sodium, Potassium, and Blood Pressure (INTERSALT and Tanaka methods have been used to estimate 24-h urinary sodium excretion from spot urine samples in some countries, but few studies have been performed to compare and validate these methods in the Chinese population. Objective: To compare and validate the Kawasaki, INTERSALT and Tanaka formulas in predicting 24-h urinary sodium excretion using spot urine samples in 365 high-risk elder patients of strokefrom the rural areas of Shaanxi province. Methods: Data were collected from a sub-sample of theSalt Substitute and Stroke Study. 365 high-risk elder patients of stroke from the rural areas of Shaanxi province participated and their spot and 24-h urine specimens were collected. The concentrations of sodium, potassium and creatinine in spot and 24-h urine samples wereanalysed. Estimated 24-h sodium excretion was predicted from spot urine concentration using the Kawasaki, INTERSALT, and Tanaka formulas. Pearson correlation coefficients and agreement by Bland-Altman method were computed for estimated and measured 24-h urinary sodium excretion. Results: The average 24-h urinary sodium excretion was 162.0 mmol/day, which representing a salt intake of 9.5 g/day. Three predictive equations had low correlation with the measured 24-h sodium excretion (r = 0.38, p < 0.01; ICC = 0.38, p < 0.01 for the Kawasaki; r = 0.35, p < 0.01; ICC = 0.31, p < 0.01 for the INTERSALT; r = 0.37, p < 0.01; ICC = 0.34, p < 0.01 for the Tanaka. Significant biases between estimated and measured 24-h sodium excretion were observed (all p < 0.01 for three methods. Among the three methods, the Kawasaki method was the least biased compared with the other two methods (mean bias: 31.90, 95% Cl: 23.84, 39

  13. Lens dislocation has a possible relationship with laser iridotomy

    Directory of Open Access Journals (Sweden)

    Mutoh T

    2012-12-01

    Full Text Available Tetsuya Mutoh,1,2 Kevin F Barrette,2 Yukihiro Matsumoto,1 Makoto Chikuda11Department of Ophthalmology, Dokkyo Medical University Koshigaya Hospital, Koshigaya City, Saitama, Japan; 2Department of Ophthalmology, Boston University School of Medicine, Boston, MA, USAAbstract: We report our recent experience of four eyes with spontaneous lens dislocation in four patients with no history of trauma or any systemic disease associated with zonular dialysis. Lens dislocation developed with 0.5 to 6 months following laser iridotomy. All patients were male and two eyes were complicated with acute primary angle closure glaucoma preoperatively. Case 1 showed bilateral lens dislocation, while cases 2 and 3 involved unilateral lens dislocation. Cases 2 and 3 showed lenses completely dislocated into the vitreous cavity. All cases needed lens removal and scleral fixation of intraocular lenses. Final visual acuity was 1.2 in all cases. We suspect that laser iridotomy may induce localized zonular dialysis that results in progressive zonular weakness, leading to lens dislocation.Keywords: lens dislocation, laser iridotomy, primary angle closure glaucoma

  14. Mental and somatic symptoms related to suicidal ideation in patients visiting a psychosomatic clinic in Japan

    Directory of Open Access Journals (Sweden)

    Kouichi Yoshimasu

    2009-08-01

    Full Text Available Kouichi Yoshimasu1, Tetsuya Kondo2,4, Shoji Tokunaga3, Yoshio Kanemitsu2, Hideyo Sugahara2, Mariko Akamine2, Kanichiro Fujisawa2, Kazuhisa Miyashita1, Chiharu Kubo21Department of Hygiene, School of Medicine, Wakayama Medical University, Wakayama, Japan; 2Department of Psychosomatic Medicine, Graduate school of Medical Sciences, Kyushu University, Fukuoka, Japan; 3Department of Medical Informatics, Kyushu University Hospital, Fukuoka, Japan; 4Department of Acupuncture and Moxibustion, Kansai University of Health Sciences, Osaka, JapanAbstract: Patients with suicidal ideation (SI have various mental or somatic symptoms. A questionnaire-based interview elicited details concerning mental and somatic symptoms in patients visiting a psychosomatic clinic in Japan. Univariate logistic regression analyses followed by multiple regression models using a stepwise method were selected for identifying the candidate symptoms. Overall, symptoms related to depression were associated with SI in both sexes. Although women showed more various somatic symptoms associated with SI than men, many of those associations were diminished once severity of the depression was controlled. The current results suggest that a variety of self-reported symptoms, mainly related to depression, might reveal suicidal risk in outpatients with an urban hospital clinical setting.Keywords: suicidal ideation, psychosomatic clinic, subjective symptoms

  15. MONITORIAMENTO DO PROCESSO DE PRODUÇÃO DO PHB

    Directory of Open Access Journals (Sweden)

    Paulo Leonardo Ribeiro

    2013-06-01

    Full Text Available A prospecção em questão aborda o estudo tecnológico do monitoramento do processo de produção do polihidroxibutirato (PHB, usando como fontes de informações as bases de patentes. Para tanto, foram analisados banco de dados do Espacenet (EP. Os dados foram obtidos utilizando-se como palavras-chave “polyhydroxyalkanoate”, “polyhydroxybutyrate” e “polyhydroxyvalerate” e o código internacional C08L67, obtendo-se deste modo um total de 376 documentos, retirando-se os documentos em duplicata através do software Microsoft Excel, quantificaram-se 198 patentes. Quanto às análises referentes à evolução anual das patentes, 8,5% foram depositadas em 2000, 17,7% no período de 2007 a 2008 e 8,1% em 2012. Os Estados Unidos (35% de depósitos, o Japão (33% e a China (16% são os três países com maior número de documentos patenteados, destacando-se as instituições com seus respectivos inventores, as americanas Gamble & Procter (Harry Melik e Metabolix® (Isao Noda e a japonesa Canon® (Yano Tetsuya.

  16. A case of Alagille syndrome complicated by intraocular lens subluxation and rhegmatogenous retinal detachment

    Directory of Open Access Journals (Sweden)

    Fukumoto M

    2013-07-01

    Full Text Available Masanori Fukumoto, Tsunehiko Ikeda, Tetsuya Sugiyama, Mari Ueki, Takaki Sato, Eisuke Ishizaki Department of Ophthalmology, Osaka Medical College, Takatsuki City, Japan Abstract: This case report describes a case of Alagille syndrome with developing intraocular lens subluxation and rhegmatogenous retinal detachment 4 years after cataract surgery. A 15-year-old female patient with Alagille syndrome-associated cataracts in both eyes underwent phacoemulsification aspiration and intraocular lens implantation. Four years postoperative, intraocular lens subluxation developed in her left eye. For treatment, extraction of the dislocated intraocular lens, anterior vitrectomy, and intraocular lens fixation was performed. Three weeks later, the patient developed rhegmatogenous retinal detachment, which was well-treated by pars plana vitrectomy. Cataract surgery needs to be performed carefully in patients with Alagille syndrome due to the weakness of the zonule of Zinn. Careful postoperative observation is necessary for patients with Alagille syndrome who have undergone intraocular surgery in order to facilitate early detection of a possible rhegmatogenous retinal detachment. Keywords: Alagille syndrome, cataract, retina, surgery

  17. A retrospective study of nine cases of Acanthamoeba keratitis

    Directory of Open Access Journals (Sweden)

    Tetsuya Mutoh

    2010-10-01

    Full Text Available Tetsuya Mutoh, Isao Ishikawa, Yukihiro Matsumoto, Makoto ChikudaDokkyo Medical University Koshigaya Hospital, Saitama, JapanPurpose: To evaluate the clinical features of Acanthamoeba keratitis in nine patients diagnosed at Dokkyo Medical University Koshigaya Hospital, Saitama, Japan.Methods: In nine eyes of nine patients, Acanthamoeba keratitis was diagnosed by direct light microscopy of corneal scrapings stained by the Parker ink-potassium hydroxide method between September 2006 and September 2009. Their clinical features and course were studied retrospectively. Antifungal eye drops, systemic antifungal therapy, and surgical debridement of the corneal lesions were performed in all patients.Results: At presentation, the clinical stage was initial in six cases, transient in one case, and complete in two cases. The patients were all contact lens wearers who had washed their lens storage cases with tap water. After treatment, final visual acuity was improved in six cases, unchanged in one case, and worse in two cases. The patient with the worst final vision (hand motion had rheumatoid arthritis and was taking oral prednisolone, which led to corneal perforation and prevented adequate debridement from being done.Conclusion: Acanthamoeba keratitis is closely related to wearing contact lenses and washing the lens storage case with tap water. Although final visual acuity improved after treatment in most patients, insufficient surgical debridement resulted in a poor visual prognosis.Keywords: surgical debridement, Acanthamoeba keratitis, contact lens wearers

  18. Main: 1UHT [RPSD[Archive

    Lifescience Database Archive (English)

    Full Text Available 85c Name=Dl3285c; Synonyms=At4g14490, At4g14490; Arabidopsis Thaliana Molecule: Expressed Protein; Chain: A;... Fragment: Forkhead Associated Domain, Fha Domain; Synonym: Hypothetical Protein; Engineered: Yes Structural..., T.Terada, T.Yabuki, M.Aoki, T.Matsuda, E.Seki, H.Hirota, M.Yoshida, A.Tanaka, T.Osanai, K.Shinozaki, M.Sek....Matsuda, E.Seki, H.Hirota, M.Yoshida, A.Tanaka, T.Osanai, K.Shinozaki, M.Seki, T....Kigawa, S.Yokoyama Solution Structure Of The Fha Domain Of Arabidopsis Thaliana Hypothetical Protein To Be Published Fha Domai

  19. Divergence and Adaptive Capacity of Marine Keystone Species

    DEFF Research Database (Denmark)

    Fietz, Katharina

    A multitude of anthropogenic actions ranging from overexploitation, pollution, and eutrophication to the introduction of invasive species impact the marine environment today (Jansson & Dahlberg 1999; Islam & Tanaka 2004; Pauly et al. 2005; Molnar et al. 2008). In combination with rapid environmen......A multitude of anthropogenic actions ranging from overexploitation, pollution, and eutrophication to the introduction of invasive species impact the marine environment today (Jansson & Dahlberg 1999; Islam & Tanaka 2004; Pauly et al. 2005; Molnar et al. 2008). In combination with rapid...... (Ammodytes tobianus and Hyperoplus lanceolatus) in the Baltic Sea and North Sea. This study further took one step beyond focusing on the genome alone, and additionally drew on information about the associated fish gut and environmental water bacterial communities. Three findings emerged: Firstly, the Baltic...

  20. On the existence and dynamics of braneworld black holes

    International Nuclear Information System (INIS)

    Fitzpatrick, Andrew Liam; Randall, Lisa; Wiseman, Toby

    2006-01-01

    Based on holographic arguments Tanaka and Emparan et al have claimed that large localized static black holes do not exist in the one-brane Randall-Sundrum model. If such black holes are time-dependent as they propose, there are potentially significant phenomenological and theoretical consequences. We revisit the issue, arguing that their reasoning does not take into account the strongly coupled nature of the holographic theory. We claim that static black holes with smooth metrics should indeed exist in these theories, and give a simple example. However, although the existence of such solutions is relevant to exact and numerical solution searches, such static solutions might be dynamically unstable, again leading to time dependence with phenomenological consequences. We explore a plausible instability, suggested by Tanaka, analogous to that of Gregory and Laflamme, but argue that there is no reliable reason at this point to assume it must exist

  1. Electronic band structure and magnetism of Fe16N2 calculated by the FLAPW method

    Science.gov (United States)

    Tanaka, Hirofumi; Harima, Hisatomo; Yamamoto, Tetsuya; Katayama-Yoshida, Hiroshi; Nakata, Yoshiyuki; Hirotsu, Yoshihiko

    2000-12-01

    Electronic band structure calculations based on the full-potential linear augmented plane-wave method have been performed for Fe16N2. The calculations are performed with the crystal parameters recently refined [H. Tanaka et al., Acta Mater. 45, 1401 (1997)] in addition to the previous reported structure [K. H. Jack, Proc. R. Soc. London, Ser. A 208, 200 (1951)]. Jack's model (J model) led to the model of Tanaka et al. (T model), where Fe atoms at the 8h site shift to N atoms along the [110] direction. The calculated average moment per Fe atom for the T model is slightly smaller than that for the J model. We cannot theoretically expect a large magnetic moment based on any Fe16N2 structure. The presence of another material that has a large magnetic moment must be considered to explain the large magnetic moment of the Fe-N system.

  2. [Follow-up discussion on restructuring the medical-service system].

    Science.gov (United States)

    Kato, Seiya; Kamada, Arisu

    2012-12-01

    tuberculosis patients whose hospitalization is often longer than patients of other diseases. There is no official standard for a facility with tuberculosis beds at this moment. Professor Atsuo Kakehi, a hospital architectural expert, discussed the points in a draft of the standard he proposed in his report. Aging of tuberculosis patients increases the number of patients with serious complications. Ensuring medical service for such patients is a major challenge. The new National Hospital Organization Hokkaido Medical Center was built in March 2010 with tuberculosis wards. Dr. Arisu Kamada reported on infection control and medical practice for patients with serious complications in a general hospital. Psychiatric diseases including senile dementia are among the largest problems among tuberculosis complications. The National Hospital Organization Kamo Psychiatric Center, which has model beds for tuberculosis, produced successful outcomes by collaborating with the National Hospital Organization Higashihiroshima Medical Center tuberculosis hospital. Dr. Masahiro Nomura reported on the implementation of DOT and regional collaboration as well as medical practice in his hospital. An important point in the National Guideline is regional collaboration. Dr. Tadatoshi Suruda from the National Hospital Organization Wakayama National Hospital discussed the status and outcomes from their regional collaboration system in Wakayama Prefecture, the top runner in this area. Thanks to solid presentation from the speakers and thoughtful comments from the floor, the symposium was very useful for promoting patient-centered medical service, a keyword in the National Guideline. 1. Environment of hospital beds for treating TB patients: Atsuo KAKEHI (Department of Architectural Design, School of Architecture, Kogakuin University) It is becoming more difficult to configure wards since the number of tuberculosis beds is decreasing. It is therefore necessary to mix general beds and tuberculosis beds in one

  3. Stemcell Information: SKIP000543 [SKIP Stemcell Database[Archive

    Lifescience Database Archive (English)

    Full Text Available ... Atsushi Tanaka 田中 敦史 Department of Cardiology, Keio University School of Medicine 慶應義塾大学医学部循環器内科 Depart...ment of Cardiology, Keio University School of Medicine 慶應義塾大学医学部循環器内科 Shinsuke Yuasa 湯浅 慎介 Information Only

  4. Validation and Assessment of Three Methods to Estimate 24-h Urinary Sodium Excretion from Spot Urine Samples in High-Risk Elder Patients of Stroke from the Rural Areas of Shaanxi Province.

    Science.gov (United States)

    Ma, Wenxia; Yin, Xuejun; Zhang, Ruijuan; Liu, Furong; Yang, Danrong; Fan, Yameng; Rong, Jie; Tian, Maoyi; Yu, Yan

    2017-10-11

    Background : 24-h urine collection is regarded as the "gold standard" for monitoring sodium intake at the population level, but ensuring high quality urine samples is difficult to achieve. The Kawasaki, International Study of Sodium, Potassium, and Blood Pressure (INTERSALT) and Tanaka methods have been used to estimate 24-h urinary sodium excretion from spot urine samples in some countries, but few studies have been performed to compare and validate these methods in the Chinese population. Objective : To compare and validate the Kawasaki, INTERSALT and Tanaka formulas in predicting 24-h urinary sodium excretion using spot urine samples in 365 high-risk elder patients of strokefrom the rural areas of Shaanxi province. Methods : Data were collected from a sub-sample of theSalt Substitute and Stroke Study. 365 high-risk elder patients of stroke from the rural areas of Shaanxi province participated and their spot and 24-h urine specimens were collected. The concentrations of sodium, potassium and creatinine in spot and 24-h urine samples wereanalysed. Estimated 24-h sodium excretion was predicted from spot urine concentration using the Kawasaki, INTERSALT, and Tanaka formulas. Pearson correlation coefficients and agreement by Bland-Altman method were computed for estimated and measured 24-h urinary sodium excretion. Results : The average 24-h urinary sodium excretion was 162.0 mmol/day, which representing a salt intake of 9.5 g/day. Three predictive equations had low correlation with the measured 24-h sodium excretion (r = 0.38, p h sodium excretion were observed (all p h sodium excretion. Conclusion : The Kawasaki, INTERSALT and Tanaka methods for estimation of 24-h urinary sodium excretion from spot urine specimens were inadequate for the assessment of sodium intake at the population level in high-risk elder patients of stroke from the rural areas of Shaanxi province, although the Kawasaki method was the least biased compared with the other two methods.

  5. Effect of Energy Polydispersity on the Nature of Lennard-Jones Liquids

    OpenAIRE

    Ingebrigtsen, Trond S.; Tanaka, Hajime

    2016-01-01

    In the companion paper [T. S. Ingebrigtsen and H. Tanaka, J. Phys. Chem. B 119, 11052 (2015)] the effect of size polydispersity on the nature of Lennard-Jones (LJ) liquids, which represent most molecular liquids without hydrogen bonds, was studied. More specifically, it was shown that even highly size polydisperse LJ liquids are Roskilde-simple (RS) liquids. RS liquids are liquids with strong correlation between constant volume equilibrium fluctuations of virial and potential energy and are s...

  6. Surface Transportability: A Bibliography.

    Science.gov (United States)

    1986-02-14

    s). Include corresponding information from the report cover. Give the name(s) of the author(s) in conventional Z - "- order (for example, John R. Doe...MANCHURIA HAWARD , E. "The Tanaka Memorial," AQ, 44:266-71, Aug 42. - lMEXICO MARLOW, F. W. "Ferrocarril Sud-Pacifico," MILENG, 15:153, 1923. "€ PANAMA EBEL, W

  7. Preliminary investigations of antioxidation of dihydromyricetin in ...

    Indian Academy of Sciences (India)

    Administrator

    Pietta P G 2000 J. Nat. Prod. 63 1035. Riitta T, Timo V, Pedro J A and Riitta J T 2003 Basic Appl. Ecol. 4 219. Towatari K, Yoshida K, Mori N, Shimizu K, Kondo R and. Sakai K 2002 Planta. Med. 68 995. Yabe N and Matsui H 1997 J. Ethnopharmacol. 56 31. Yabe N, Tanaka K and Matsui H 1998 J. Ethnopharmacol. 59. 147.

  8. Chlorophyll b can serve as the major pigment in functional photosystem II complexes of cyanobacteria

    OpenAIRE

    Xu, Hong; Vavilin, Dmitrii; Vermaas, Wim

    2001-01-01

    An Arabidopsis thaliana chlorophyll(ide) a oxygenase gene (cao), which is responsible for chlorophyll b synthesis from chlorophyll a, was introduced and expressed in a photosystem I-less strain of the cyanobacterium Synechocystis sp. PCC 6803. In this strain, most chlorophyll is associated with the photosystem II complex. In line with observations by Satoh et al. [Satoh, S., Ikeuchi, M., Mimuro, M. & Tanaka, A. (2001) J. Biol. Chem. 276, 4293–4297], chlorophyll b was made but accounted for le...

  9. Chemical Constituents of YUZU and LIME Essencial Oils and Their Antioxidative Activities

    OpenAIRE

    Tachibana, Shinya; Tanimoto, Shinich; Murai, Yoshihiro; Watanabe, Yoshiyuki; Okada, Yoshiharu; Nomura, Masato

    2011-01-01

    [Abstract] In this examination, antioxidant activities and whitening effects of yuzu(Citrus junos Sieb.ex Tanaka ) and lime(Citrus aurantifolia S.) essencial oils which are widely used in food flavors were studied. As a result, we found out that 1% to 2% concentration yuzu essencial oil contains equal antioxidant activity to □-tocopherol which is a substance commercially used as antioxidant. Also, from the result of tyrosinase activity inhibition test, an evaluation test on whitening effect...

  10. Safety organization and leadership. A scientific approach to human skills

    International Nuclear Information System (INIS)

    Yoshida, Michio

    2005-01-01

    Effects of leadership on safety of organization have been studied based on results of theoretical and demonstrative research. Analysis and considerations were focused on several aspects such as 1) leadership is understood better as behavior rather than as character, 2) leadership has an effect on follower's motivation, satisfaction and safety consciousness and 3) improvement of safety of organization shall be attained with training to improve and advance leadership. (T. Tanaka)

  11. Validation and comparison of three formulae to estimate sodium and potassium excretion from a single morning fasting urine compared to 24-h measures in 11 countries.

    Science.gov (United States)

    Mente, Andrew; O'Donnell, Martin J; Dagenais, Gilles; Wielgosz, Andy; Lear, Scott A; McQueen, Matt J; Jiang, Ying; Xingyu, Wang; Jian, Bo; Calik, K Burco T; Akalin, Ayse A; Mony, Prem; Devanath, Anitha; Yusufali, Afzal H; Lopez-Jaramillo, Patricio; Avezum, Alvaro; Yusoff, Khaled; Rosengren, Annika; Kruger, Lanthe; Orlandini, Andrés; Rangarajan, Sumathi; Teo, Koon; Yusuf, Salim

    2014-05-01

    Although 24-h urinary measure to estimate sodium and potassium excretion is the gold standard, it is not practical for large studies. We compared estimates of 24-h sodium and potassium excretion from a single morning fasting urine (MFU) using three different formulae in healthy individuals. We studied 1083 individuals aged 35-70 years from the general population in 11 countries. A 24-h urine and MFU specimen were obtained from each individual. A subset of 448 individuals repeated the measures after 30-90 days. The Kawasaki, Tanaka, and INTERSALT formulae were used to estimate urinary excretion from a MFU specimen. The intraclass correlation coefficient (ICC) between estimated and measured sodium excretion was higher with Kawasaki (0.71; 95% confidence interval, CI: 0.65-0.76) compared with INTERSALT (0.49; 95% CI: 0.29-0.62) and Tanaka (0.54; 95% CI: 0.42-0.62) formulae (P <0.001). For potassium, the ICC was higher with the Kawasaki (0.55; 95% CI: 0.31-0.69) than the Tanaka (0.36; 95% CI: -0.07 to 0.60; P <0.05) formula (no INTERSALT formula exists for potassium). The degree of bias (vs. the 24-h urine) for sodium was smaller with Kawasaki (+313 mg/day; 95% CI: +182 to +444) compared with INTERSALT (-872 mg/day; 95% CI: -728 to -1016) and Tanaka (-548 mg/day; 95% CI: -408 to -688) formulae (P <0.001 and P = 0.02, respectively). Similarly for potassium, the Kawasaki formula provided the best agreement and least bias. Blood pressure correlated most closely and similarly with the 24-h and Kawasaki estimates for sodium compared with the other two formulae. In a diverse population, the Kawasaki formula is the most valid and least biased method of estimating 24-h sodium excretion from a single MFU and is suitable for population studies.

  12. Influence of microscopic strain heterogeneity on the formability of martensitic stainless steel

    Science.gov (United States)

    Bettanini, Alvise Miotti; Delannay, Laurent; Jacques, Pascal J.; Pardoen, Thomas; Badinier, Guillaume; Mithieux, Jean-Denis

    2017-10-01

    Both finite element modeling and mean field (Mori-Tanaka) modeling are used to predict the strain partitioning in the martensite-ferrite microstructure of an AISI 410 martensitic stainless steel. Numerical predictions reproduce experimental trends according to which macroscopic strength is increased when the dissolution of carbides leads to carbon enrichment of martensite. However, the increased strength contrast of ferrite and martensite favours strain localization and high stress triaxiality in ferrite, which in turn promotes ductile damage development.

  13. The relationship between insight and subjective experience in schizophrenia

    OpenAIRE

    Kako, Yuki; Ito,Koki; Hashimoto,Naoki; Toyoshima,Kuniyoshi; Shimizu,Yusuke; Mitsui,Nobuyuki; Fujii,Yutaka; Tanaka,Teruaki; Kusumi,Ichiro

    2014-01-01

    Yuki Kako, Koki Ito, Naoki Hashimoto, Kuniyoshi Toyoshima, Yusuke Shimizu, Nobuyuki Mitsui, Yutaka Fujii, Teruaki Tanaka, Ichiro Kusumi Department of Psychiatry, Hokkaido University Graduate School of Medicine, Sapporo, Japan Objectives: To examine the relationship between level of insight and various subjective experiences for patients with schizophrenia.Materials and methods: Seventy-four patients with schizophrenia who were discharged from our hospital were evaluated. The level ...

  14. 繊維分散複合材料の構成則モデル : 第1報, 均等分布する繊維分散複合体

    OpenAIRE

    呉, 亜東; 中垣, 通彦

    1999-01-01

    A constitutive model that describes the macro-stiffness characteristics for fiber reinforced composite materials is introduced. The model utilizes the Eshelby's equivalent inclusion method for describing a particle but with authors'self consistent compliance scheme instead of Mori-Tanaka's meanfield theory, which most other composite models are based on. A separated meso-mechanics analysis verified the accuracy and the reliability of the present model for a fiber dispersed composite over the ...

  15. Optical properties of polymer nanocomposites

    Indian Academy of Sciences (India)

    Wintec

    Etchegoin P G, Le Ru E C and Mayer M 2006 J. Chem. Phys. 25 164705. Haridas M, Srivastava S and Basu J K 2008 EPJD (submitted). Inouye H, Tanaka K, Tanahashi I and Hirao K 1998 Jpn J. Appl. Phys. 37 L1520. Johnson P B and Christy R W 1972 Phys. Rev. B6 4370. Kreibig U and Vollmer M 1995 Optical properties ...

  16. CCR 20th Anniversary commentary: stayin' alive-antiapoptotic proteins and breast cancer.

    Science.gov (United States)

    Yee, Douglas

    2015-02-15

    The control of cell death involves a complex interaction of multiple proteins. In a study published in the January 1, 2000, issue of Clinical Cancer Research, Tanaka and colleagues demonstrated that one of the proapoptotic proteins, survivin, was frequently expressed in breast cancer. In the subsequent years, effectors of apoptosis have translated into important prognostic indicators and potential therapeutic targets. ©2015 American Association for Cancer Research.

  17. Untitled

    Indian Academy of Sciences (India)

    1. Tanaka T 1978 Phys. Rev. Lett. 40 820. Uhlmann D R, Zelinski B J J and Wivek G E 1984 Better ceramics through chemistry (eds) CJ Brinker,. D E Clark and D R Ulrich (New York: North Holland). Wilson S J 1979 J. Solid State Chem. 30 257. Yoldas B E 1975 Ann, Ceram. Soc. Bull, 54.289. Yoldas B E 1982 J. Non-Cryst.

  18. Neutron diffraction study of multipole order in light rare-earth ...

    Indian Academy of Sciences (India)

    discussed in connection with recent non-resonant X-ray results by Tanaka et al. Keywords. Multipole; quadrupole; CeB6; neutron diffraction. PACS Nos 61.05.fm; 75.25.+z; 75.30.Kz. 1. Introduction. Orbital degrees of freedom are known to play a central role in the physics of tran- sition metal oxides. Well-known examples ...

  19. Parental bonding and attitudes toward suicide among medical college students in Japan

    OpenAIRE

    Sugawara, Nrio; Hashimoto,Kojiro; Tanaka,Osamu; Nakamura,Kazuhiko; Yasui-Furukori,Norio

    2014-01-01

    Kojiro Hashimoto,1 Norio Sugawara,2 Osamu Tanaka,2 Kazuhiko Nakamura,1 Norio Yasui-Furukori1 1Department of Neuropsychiatry, Hirosaki University School of Medicine, Hirosaki, Aomori, Japan; 2Aomori Prefectural Center for Mental Health and Welfare, Aomori, Japan Background: Suicide is a grave public health issue that is responsible for a high mortality rate among individuals aged 15–44 years. Attitudes toward suicide among medical staff members have been associated with appropriat...

  20. Advanced scientific computational methods and their applications to nuclear technologies. (3) Introduction of continuum simulation methods and their applications (3)

    International Nuclear Information System (INIS)

    Satake, Shin-ichi; Kunugi, Tomoaki

    2006-01-01

    Scientific computational methods have advanced remarkably with the progress of nuclear development. They have played the role of weft connecting each realm of nuclear engineering and then an introductory course of advanced scientific computational methods and their applications to nuclear technologies were prepared in serial form. This is the third issue showing the introduction of continuum simulation methods and their applications. Spectral methods and multi-interface calculation methods in fluid dynamics are reviewed. (T. Tanaka)

  1. Training and qualification of nuclear power plant operators (4)

    International Nuclear Information System (INIS)

    Ohsuga, Y.

    2009-01-01

    Training center using the simulators, instructor training, training upgrade, deployment of digital control panel and review of training were described with overseas practice. Recently, nuclear power plant on-site simulators were also used for respective operator training. Operator teamwork training, training team performance upgrade, reflection of operating experiences in nuclear power plant accidents, development of training support equipments and management of training records were needed to review and upgrade training and qualification programs. (T. Tanaka)

  2. DETERMINATION OF EFFECTIVE PROPERTIES OF FIBER-REINFORCED COMPOSITE LAMINATES

    Directory of Open Access Journals (Sweden)

    Andrzej Skrzat

    2014-06-01

    Full Text Available The determination of effective mechanical properties of multi-layer composite is presented in this paper. Computations based on finite element method predicting properties of inhomogeneous materials require solving huge tasks. More effective is Mori-Tanaka approach, typical for micromechanics problems. For regularly distributed fibers closed-forms for effective composite material properties are possible to derive. The results of homogenization are used in strength analysis of the composite pressure vessel.

  3. Antioxidative potential of Perna viridis and its protective role against ROS induced lipidperoxidation and protein carbonyl

    Digital Repository Service at National Institute of Oceanography (India)

    Jena, K.B.; Jagtap, T.G.; Verlecar, X.N.

    ) represent various forms of oxygen centered molecules (1). In living beings, ROS are formed endogenously during normal cellular metabolism. Exogenously ROS is obtained during exposure to ionization radiations and many xenobiotic substances (1). In cellular... atherogenicity. New England Journal of Medicine, 320: 915-924. 6. Muramatsu, H., Kogawa, K., Tanaka, M., Okumura, K., Koike, K. and Kuga, T. (1995) Superoxide dismutase in SAS human tongue carcinoma cell line is a factor defining invasiveness and cell motility...

  4. Advanced scientific computational methods and their applications of nuclear technologies. (1) Overview of scientific computational methods, introduction of continuum simulation methods and their applications (1)

    International Nuclear Information System (INIS)

    Oka, Yoshiaki; Okuda, Hiroshi

    2006-01-01

    Scientific computational methods have advanced remarkably with the progress of nuclear development. They have played the role of weft connecting each realm of nuclear engineering and then an introductory course of advanced scientific computational methods and their applications to nuclear technologies were prepared in serial form. This is the first issue showing their overview and introduction of continuum simulation methods. Finite element method as their applications is also reviewed. (T. Tanaka)

  5. Understanding Optimal Decision-Making in Wargaming

    Science.gov (United States)

    2013-09-01

    cognitive load is associated with poorer decision- making ( Gonzalez , 2005). These findings suggest that measuring changes in pupil diameter could be...decision-making. Cerebral Cortex, 2013b. Cleotilde Gonzalez . Task workload and cognitive abilities in dynamic decision making. Hu- man Factors: The Journal...The past 25years. Vision research, 51(13):1457–1483, 2011. Olav E Krigolson, Lara J Pierce, Clay B Holroyd, and James W Tanaka. Learning to become

  6. Summary of the Proceedings of the National Symposium on Fracture Mechanics (17th) Held on 7-9 Aug 84 in Albany, New York.

    Science.gov (United States)

    1986-12-01

    were conducted on both aluminum and tita- nium alloy specimens. Results show that surface crack shapes in solid cylin- ders can be accurately represented...C to 538 0 C to a first order approximation. 1. Soya, H. Takashima, and Y. Tanaka addressed the fatigue behavior of welded Invar sheets in the...into a single flaw. The analysis was confirmed through the use of heat tinting techniques on both Waspalloy and Ti-6246 alloys . 9 W. N. Sharpe, Jr. and J

  7. Refinement of nuclear safety education reinforcing technical succession

    International Nuclear Information System (INIS)

    Yokobori, Seiichi

    2008-01-01

    In April 2008, Musashi Institute of Technology established another faculty, the Faculty of Nuclear Safety Engineering, to educate students for nuclear engineering to meet the demands of personnel for nuclear business. At this new faculty, students mainly obtain professional knowledge and skills related to nuclear safety issues. This article described refinement of nuclear safety education by reinforcing technical succession topics, such as Rankine cycle, fission, two-phase flow, defense in depth in safety. LOCA/ECCS, seismic effects, reactor maintenance. (T. Tanaka)

  8. Revision of the ASME nuclear quality assurance standard and its historical background

    International Nuclear Information System (INIS)

    Suzuki, Tetsuya

    2009-01-01

    ASME NQA-1-2008 'Quality Assurance Requirements for Nuclear Facility Applications' will be endorsed by US NRC by the end of 2009. This standard will apply to design, construction and operation of nuclear power plants newly erected in USA. It is important to Japanese vendors developing nuclear business in USA. Historical background, significance of revision and main revised points of the ASME nuclear quality assurance standard are described in the present paper. (T. Tanaka)

  9. Prediction of width of un-erupted incisors, canines and premolars in a Ugandan population: A cross sectional study

    Directory of Open Access Journals (Sweden)

    Buwembo William

    2012-07-01

    Full Text Available Abstract Background Accurate prediction of the space forms an important part of an orthodontic assessment in the mixed dentition. However the most commonly used methods of space analysis are based on data developed on Caucasian populations. In order to provide more accurate local data we set out to develop a formula for predicting the widths of un-erupted canines and premolars for a Ugandan population and to compare the predicted widths of the teeth from this formula with those obtained from Moyers’ tables, and Tanaka and Johnston’s equations. Methods Dental casts were prepared using mandibular and maxillary arch impressions of 220 children (85 boys/135 girls aged 12–17 years recruited from schools in Kampala, Uganda. The mesio-distal width of the mandibular incisors, mandibular and maxillary canines and premolars were measured with a pair of digital calipers. Based on regression analysis, predictive equations were derived and the findings were compared with those presented in Moyers’ probability tables, and Tanaka and Johnston’s equations. Results There were no statistically significant differences between the tooth widths predicted by our equations and those from Moyers’ probability tables at the 65th and 75th percentile probabilities for the girls and at 75th level in boys in the mandibular arch. While in the maxillary arch no statistically significant differences at the 75th and 95th levels were noted in girls. There were statistically significant differences between predicted tooth sizes using equations from the present study and those predicted from the Tanaka and Johnston regression equations. Conclusions In this Ugandan population, Moyers’ probability tables could be used to predict tooth widths at specific percentile probabilities, but generally, Tanaka and Johnston technique tends to overestimate the tooth widths.

  10. 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.

  11. 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

  12. PREFACE: Third International Symposium on Atomic Technology

    Science.gov (United States)

    Yasumori, Atsuo

    2009-09-01

    The International Symposium on Atomic Technology (ISAT) is held every year. The Third Symposium (ISAT-3) was held on 5-6 March 2009 at the Tokyo International Exchange Center, Tokyo, Japan jointed with the Third Polyscale Technology Workshop (PTW-3). The ISAT-3 symposium was intended to offer a forum for the discussion of the latest progress in atomic technologies, which was successively held after ISAT-1 at Tsukuba and ISAT-2 at Awaji in 2007. The symposium was attended by 136 participants. There were 12 invited and 4 oral presentations. The number of poster presentations was 101. From all the contributions, 32 papers selected through review process are contained in this volume. The 'Atomic Technology Project' and the 'Polyscale Technology Project' were started in 2006 as the joint project of three institutions; (1) Center for Atomic and Molecular Technologies, Graduate School of Engineering, Osaka University (CAMT), (2) Tsukuba Research Center for Interdisciplinary Materials Science, Graduate School of Pure and Applied Sciences, University of Tsukuba (TIMS) and (3) Polyscale Technology Research Center, Research Institute for Science and Technology, Tokyo University of Science (PTRC), each of which were independently pursuing atomic and polyscale technologies. The project is funded by the Ministry of Education, Culture, Sports, Science and Technology of Japan. The goal of these projects is to contribute to the development of atomic and polyscale science and technologies. In this symposium, four research fields were focused on: Biomedical Applications, Fabrication for Advanced Materials and Devices, Magnetic Applications, and Quantum and Molecular Engineering for Advanced Technologies. Atsuo Yasumori Conference Chair Polyscale Technology Research Center, Research Institute for Science and Technology, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan.

  13. Validation of a new mass screening tool for cognitive impairment: Cognitive Assessment for Dementia, iPad version

    Directory of Open Access Journals (Sweden)

    Onoda K

    2013-03-01

    Full Text Available Keiichi Onoda,1 Tsuyoshi Hamano,2 Yoko Nabika,1 Atsuo Aoyama,1 Hiroyuki Takayoshi,1 Tomonori Nakagawa,1 Masaki Ishihara,1 Shingo Mitaki,1 Takuya Yamaguchi,1 Hiroaki Oguro,1 Kuninori Shiwaku,3 Shuhei Yamaguchi1 1Department of Neurology, 2Center for Community-Based Health Research and Education, Shimane University, Izumo, 3Shimane University, Matsue, Shimane, Japan Background: We have developed a new screening test for dementia that runs on an iPad and can be used for mass screening, known as the Cognitive Assessment for Dementia, iPad version (CADi. The CADi consists of items involving immediate recognition memory for three words, semantic memory, categorization of six objects, subtraction, backward repetition of digits, cube rotation, pyramid rotation, trail making A, trail making B, and delayed recognition memory for three words. The present study examined the reliability and validity of the CADi. Methods: CADi evaluations were conducted for patients with dementia, healthy subjects selected from a brain checkup system, and community-dwelling elderly people participating in health checkups. Results: CADi scores were lower for dementia patients than for healthy elderly individuals and correlated significantly with Mini-Mental State Examination scores. Cronbach’s alpha values for the CADi were acceptable (over 0.7, and test–retest reliability was confirmed via a significant correlation between scores separated by a one-year interval. Conclusion: These results suggest that the CADi is a useful tool for mass screening of dementia in Japanese populations. Keywords: dementia, mass screening, early detection, iPad

  14. Geologic Map of the Thaumasia Region, Mars

    Science.gov (United States)

    Dohm, Janes M.; Tanaka, Kenneth L.; Hare, Trent M.

    2001-01-01

    The geology of the Thaumasia region (fig. 1, sheet 3) includes a wide array of rock materials, depositional and erosional landforms, and tectonic structures. The region is dominated by the Thaumasia plateau, which includes central high lava plains ringed by highly deformed highlands; the plateau may comprise the ancestral center of Tharsis tectonism (Frey, 1979; Plescia and Saunders, 1982). The extensive structural deformation of the map region, which is without parallel on Mars in both complexity and diversity, occurred largely throughout the Noachian and Hesperian periods (Tanaka and Davis, 1988; Scott and Dohm, 1990a). The deformation produced small and large extensional and contractional structures (fig. 2, sheet 3) that resulted from stresses related to the formation of Tharsis (Frey, 1979; Wise and others, 1979; Plescia and Saunders, 1982; Banerdt and others, 1982, 1992; Watters and Maxwell, 1986; Tanaka and Davis, 1988; Francis, 1988; Watters, 1993; Schultz and Tanaka, 1994), from magmatic-driven uplifts, such as at Syria Planum (Tanaka and Davis, 1988; Dohm and others, 1998; Dohm and Tanaka, 1999) and central Valles Marineris (Dohm and others, 1998, Dohm and Tanaka, 1999), and from the Argyre impact (Wilhelms, 1973; Scott and Tanaka, 1986). In addition, volcanic, eolian, and fluvial processes have highly modified older surfaces in the map region. Local volcanic and tectonic activity often accompanied episodes of valley formation. Our mapping depicts and describes the diverse terrains and complex geologic history of this unique ancient tectonic region of Mars. The geologic (sheet 1), paleotectonic (sheet 2), and paleoerosional (sheet 3) maps of the Thaumasia region were compiled on a Viking 1:5,000,000-scale digital photomosaic base. The base is a combination of four quadrangles: the southeast part of Phoenicis Lacus (MC–17), most of the southern half of Coprates (MC–18), a large part of Thaumasia (MC–25), and the northwest margin of Argyre (MC–26

  15. Ajuste y evaluación de las constantes de regresión lineal para el análisis de dentición mixta

    Directory of Open Access Journals (Sweden)

    Jaime Fabián Gutiérrez Rojo

    2012-09-01

    Full Text Available Durante el intercambio de dentición se utilizan los análisis de dentición mixta para predecir el tamaño mesiodistal de los caninos y premolares sin erupcionar. Material y Métodos: Se revisaron 912 casos pre-tratamiento de ortodoncia y fueron 504 los que cumplieron con los criterios de inclusión. Se estimó la estadística descriptiva y las constantes de regresión lineal para la población general y por género, se compararon los valores mediante la prueba de t de Student. Resultados: Existen diferencias estadísticas significativas (P≤.01 entre las constantes de Tanaka Johnston y las obtenidas en Tepic, con excepción de la mandíbula en hombres. Al compararlos con los dientes erupcionados las constantes de Tanaka Johnston no son efectivas y las constantes de población general y género masculino si lo son. Conclusiones: El análisis de regresión lineal de Tanaka Johnston sobrestima los valores de los dientes sin erupcionar.

  16. Effect of Compressive Mode I on the Mixed Mode I/II Fatigue Crack Growth Rate of 42CrMo4

    Science.gov (United States)

    Heirani, Hasan; Farhangdoost, Khalil

    2018-01-01

    Subsurface cracks in mechanical contact loading components are subjected to mixed mode I/II, so it is necessary to evaluate the fatigue behavior of materials under mixed mode loading. For this purpose, fatigue crack propagation tests are performed with compact tension shear specimens for several stress intensity factor (SIF) ratios of mode I and mode II. The effect of compressive mode I loading on mixed mode I/II crack growth rate and fracture surface is investigated. Tests are carried out for the pure mode I, pure mode II, and two different mixed mode loading angles. On the basis of the experimental results, mixed mode crack growth rate parameters are proposed according to Tanaka and Richard with Paris' law. Results show neither Richard's nor Tanaka's equivalent SIFs are very useful because these SIFs depend strongly on the loading angle, but Richard's equivalent SIF formula is more suitable than Tanaka's formula. The compressive mode I causes the crack closure, and the friction force between the crack surfaces resists against the crack growth. In compressive loading with 45° angle, d a/d N increases as K eq decreases.

  17. Tooth width predictions in a sample of Black South Africans.

    Science.gov (United States)

    Khan, M I; Seedat, A K; Hlongwa, P

    2007-07-01

    Space analysis during the mixed dentition requires prediction of the mesiodistal widths of the unerupted permanent canines and premolars and prediction tables and equations may be used for this purpose. The Tanaka and Johnston prediction equations, which were derived from a North American White sample, is one example which is widely used. This prediction equation may be inapplicable to other race groups due to racial tooth size variability. Therefore the purpose of this study was to derive prediction equations that would be applicable to Black South African subjects. One hundred and ten pre-treatment study casts of Black South African subjects were analysed from the Department of Orthodontics' records at the University of Limpopo. The sample was equally divided by gender with all subjects having Class I molar relationship and relatively well aligned teeth. The mesiodistal widths of the maxillary and mandibular canines and premolars were measured with a digital vernier calliper and compared with the measurements predicted with the Tanaka and Johnston equations. The relationship between the measured and predicted values were analysed by correlation and regression analyses. The results indicated that the Tanaka and Johnston prediction equations were not fully applicable to the Black South African sample. The equations tended to underpredict the male sample, while slight overprediction was observed in the female sample. Therefore, new equations were formulated and proposed that would be accurate for Black subjects.

  18. Tipepidine in adolescent patients with depression: a 4 week, open-label, preliminary study

    Directory of Open Access Journals (Sweden)

    Sasaki T

    2014-05-01

    Full Text Available Tsuyoshi Sasaki,1,2 Kenji Hashimoto,3 Masumi Tachibana,1 Tsutomu Kurata,1 Hiroshi Kimura,2 Hideki Komatsu,2 Masatomo Ishikawa,2 Tadashi Hasegawa,2 Akihiro Shiina,1 Tasuku Hashimoto,2 Nobuhisa Kanahara,4 Tetsuya Shiraishi,2 Masaomi Iyo1–41Department of Child Psychiatry, Chiba University Hospital, 2Department of Psychiatry, Chiba University Graduate School of Medicine, 3Division of Clinical Neuroscience, Chiba University Center for Forensic Mental Health, 4Division of Medical Treatment and Rehabilitation, Chiba University Center for Forensic Mental Health, Inohana, Chiba, JapanDepression in children and adolescents is a common, recurrent, and debilitating condition associated with increased psychosocial, and medical morbidity and mortality.1The global prevalence of depression in children and adolescents is 1%–2% and 3%–8%, respectively.2 Depressive symptoms are also associated with significant functional impairment in school and the work place (often requiring legal interventions,1–5 and an increased risk for substance abuse and suicide.6–9 Clinical guidelines suggest the use of two selective serotonin reuptake inhibitors (SSRI, namely fluoxetine and escitalopram, both of which are effective with generally acceptable safety profiles in the treatment of adolescent depression.10 Additionally, combination treatment with an SSRI and psychotherapy, typically cognitive behavioral therapy (CBT, has shown benefit in this cohort.10 However, caution is warranted since antidepressants therapy in children and adolescents is associated with increased rates of suicidal ideation11–13 and adverse effects, characterized by excessive emotional arousal or behavioral activation.14 These results highlight the need for new therapies in adolescent patients with depression, particularly therapies with fewer side effects.View original paper by Brent and Maalouf.

  19. A case of radial keratoneuritis in non-Acanthamoeba keratitis

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    Mutoh T

    2012-09-01

    Full Text Available Tetsuya Mutoh, Yukihiro Matsumoto, Makoto ChikudaDepartment of Ophthalmology, Dokkyo Medical University Koshigaya Hospital, Saitama, JapanAbstract: A case of non-Acanthamoeba keratitis with radial keratoneuritis, which is thought to be pathognomonic for Acanthamoeba keratitis, is reported. A healthy 32-year-old woman with a history of frequent replacement of her contact lenses due to wear was examined at Dokkyo Medical University Koshigaya Hospital (Saitama, Japan and found to have a slight corneal opacity that was accompanied by radial keratoneuritis. Based on both the patient’s clinical findings and past history, the presence of Acanthamoeba keratitis was highly suspected. However, direct light microscopy of corneal scrapings stained by the Parker ink–potassium hydroxide method only found Acanthamoeba-type material in the specimen collected at her initial visit. In all other specimens collected from the patient, no Acanthamoeba was found either when using the same method or when performing cultures of the surgical debridement of the corneal lesion. In addition, topical antifungal eye drops, systemic antifungal drugs, and surgical debridement were also not effective in this case. Since a precise diagnosis could not be made, the patient was treated with topical 0.1% betamethasone sodium, which ultimately resulted in a dramatic improvement of her corneal inflammation. At 23 days after initiation of topical administration of 0.1% betamethasone sodium, visual acuity was 20/250, with a slight corneal opacity noted at the original site of infection. The outcome of the current case suggests that radial keratoneuritis is not always pathognomonic for Acanthamoeba keratitis.Keywords: radial keratoneuritis, non-Acanthamoeba keratitis, topical corticosteroid

  20. Influence of treatment with alendronate on the speed of sound, an ultrasound parameter, of the calcaneus in postmenopausal Japanese women with osteoporosis: a clinical practice-based observational study

    Directory of Open Access Journals (Sweden)

    Iwamoto J

    2012-06-01

    Full Text Available Jun Iwamoto,1 Tetsuya Takada,2 Yoshihiro Sato,3 Hideo Matsumoto11Institute for Integrated Sports Medicine, Keio University School of Medicine, Tokyo, 2Department of Internal Medicine, Hiyoshi Medical Clinic, Kanagawa, 3Department of Neurology, Mitate Hospital, Fukuoka, JapanPurpose: The influence of alendronate (ALN treatment on the quantitative ultrasound parameters of the calcaneus remains to be established in Japanese patients. The aim of the present clinical practice-based observational study was to examine the influence of ALN treatment for 1 year on the speed of sound (SOS of the calcaneus and bone turnover markers in postmenopausal Japanese women with osteoporosis.Patients and methods: Forty-five postmenopausal Japanese women with osteoporosis who had received treatment with ALN for more than 1 year were enrolled in the study. The SOS and bone turnover markers were monitored over 1 year of ALN treatment.Results: The urinary levels of cross-linked N-terminal telopeptides of type I collagen and serum levels of alkaline phosphatase decreased significantly from the baseline values (–44.9% at 3 months and –22.2% at 12 months, respectively. The SOS increased modestly, but significantly, from the baseline value (0.6% at both 6 and 12 months. The percentage decrease in the urinary levels of cross-linked N-terminal telopeptides of type I collagen at 3 months was significantly correlated with the percentage increase in the SOS only at 6 months (correlation coefficient, 0.299.Conclusion: The present study confirmed that ALN treatment suppressed bone turnover, producing a clinically significant increase in the SOS of the calcaneus in postmenopausal Japanese women with osteoporosis.Keywords: postmenopausal osteoporosis, quantitative ultrasound (QUS, SOS, bone turnover, biochemical markers

  1. Effect of aging on oral and swallowing function after meal consumption

    Directory of Open Access Journals (Sweden)

    Hiramatsu T

    2015-01-01

    Full Text Available Tetsuya Hiramatsu,1,2 Hideyuki Kataoka,3 Mari Osaki,4 Hiroshi Hagino3,4 1Department of Speech Pathology and Audiology, Matsue Co-medical College, Matsue, Japan; 2Graduate School of Medical Sciences, Tottori University, 3School of Health Science, Faculty of Medicine, Tottori University, 4Rehabilitation Division, Tottori University Hospital, Yonago, Japan Background/purpose: Dysphagia may worsen due to fatigue of the infrahyoid and suprahyoid muscle groups as a result of repetitive swallowing during a meal. We investigated the hypothesis that meal consumption may reduce tongue strength and endurance in older adults (OAs.Methods: Tongue–palate pressure, oral diadochokinesis, repetitive saliva swallowing, and surface electromyography activity before and after a meal were measured in 23 young adults (YAs and 23 OA volunteers.Results: There was a statistically significant difference in both tongue pressure and the number of voluntary swallows between YAs and OAs. Peak tongue pressure was significantly lower in OAs than YAs both before and after meal consumption. The most notable finding was that the first time interval (the time from test initiation to the beginning of the first swallow was prolonged after meal consumption only in OAs, whereas the first time interval showed no difference between YAs and OAs before meal consumption with reference to the repetitive saliva swallowing test. The initiation of swallowing was prolonged by both meal consumption and aging; there was a significant interaction between these two factors. The number of repetitions of the monosyllable/pa/was statistically similar between YAs and OAs before meal consumption, but it was significantly lower in OAs after meal consumption.Conclusion: Aging leads to declining tongue pressure and motor function of the lips. It is possible that swallowing function declines in older individuals when meal consumption is prolonged, especially at the end of mealtime, as a result of their

  2. Application of a three-microneedle device for the delivery of local anesthetics

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    Ishikawa K

    2015-04-01

    Full Text Available Kayoko Ishikawa,1 Hidekazu Fukamizu,1 Tetsuya Takiguchi,1 Yusuke Ohta,1 Yoshiki Tokura2 1Department of Plastic and Reconstructive Surgery, Hamamatsu University School of Medicine, Hamamatsu, Japan; 2Department of Dermatology, Hamamatsu University School of Medicine, Hamamatsu, Japan Purpose: We investigated the effectiveness of a newly developed device for the delivery of local anesthetics in the treatment of axillary osmidrosis and hyperhidrosis. We developed a device with three fine, stainless steel needles fabricated with a bevel angle facing outside (“three-microneedle device” [TMD] to release a drug broadly and homogeneously into tissue in the horizontal plane. Use of this device could reduce the risk of complications when transcutaneous injections are undertaken.Patients and methods: Sixteen Japanese patients were enrolled. The mean volume of lidocaine hydrochloride per unit area needed to elicit anesthesia when using a TMD was compared with that the volume required when using a conventional 27-gauge needle. The visual analog scale (VAS score of needlestick pain and injection-associated pain was also compared.Results: The mean volume of lidocaine hydrochloride per unit area to elicit anesthesia using the TMD was significantly lower than that the volume required when using the conventional 27-gauge needle. The VAS score of needlestick pain for the TMD was significantly lower than that the VAS score for the 27-gauge needle.Conclusion: These data suggest that the TMD could be useful for the delivery of local anesthetics in terms of clinical efficacy and avoidance of adverse effects. Keywords: three-microneedle device, transcutaneous drug delivery, local anesthesia, lidocaine, pain

  3. Vitrectomy in patients over 90 years of age

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    Muto T

    2016-01-01

    Full Text Available Tetsuya Muto, Tomoyuki Ide, Makoto Chikuda, Shigeki Machida Department of Ophthalmology, Dokkyo Medical University Koshigaya Hospital, Koshigaya, Japan Purpose: The aim of this study was to evaluate vitrectomy procedures performed in patients over 90 years of age at the Dokkyo Medical University Koshigaya Hospital (Koshigaya, Japan.Patients and methods: Vitrectomies were performed in nine eyes of nine patients who were over 90 years of age between May 2010 and March 2015. Factors such as the underlying vitreoretinal disease, preoperative and postoperative best-corrected visual acuity (BCVA, surgical time, postoperative body position, need for a second surgery, systemic disease, and intraoperative changes in systemic conditions have been evaluated.Results: The most common cause of the underlying vitreoretinal disease was vitreous hemorrhage derived from age-related macular degeneration and posterior dislocation of the lens secondary to a posterior capsular rupture (two cases each. The mean values for the logarithm of the minimum angle of resolution BCVA were 2.15 preoperatively and 1.46 postoperatively (P=0.020, Wilcoxon signed-rank test. The mean surgical time was 109 minutes. Prone position was needed in two cases, and no second surgeries were needed. The most common cause of systemic disease was hypertension, which was found in six cases. Transient hypertension was found in two cases during surgery, and these patients were treated using intravenous calcium blocker injections.Conclusion: Patients over 90 years of age who underwent vitrectomy procedures did not have serious problems, except transient hypertension during surgery. The BCVA significantly improved. These results indicated that vitrectomies could be performed successfully in patients over 90 years of age. Keywords: vitrectomy, underlying vitreoretinal disease, transient hypertension

  4. Comparison between oscillometric- and Doppler-ABI in elderly individuals

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    Takahashi I

    2013-03-01

    Full Text Available Ikuno Takahashi,1,3 Kyoji Furukawa,2 Waka Ohishi,1 Tetsuya Takahashi,3 Masayasu Matsumoto,3 Saeko Fujiwara11Department of Clinical Studies, 2Department of Statistics, Radiation Effects Research Foundation (RERF, Hiroshima, Japan; 3Department of Clinical Neuroscience and Therapeutics, Hiroshima University, Hiroshima, JapanAbstract: Peripheral arterial disease (PAD generally remains under-recognized, mainly due to the specialized technical skills required to detect the low values of the ankle-brachial index (ABI. As a simpler and faster alternative to the standard method using continuous-wave Doppler ultrasound, we evaluated automated oscillometric ABI measurement by VP-2000 with an elderly cohort of 113 subjects (age range, 61 to 88 years. The standard deviation in ABIs measured by the Doppler method was statistically greater than that measured by the oscillometric method for each of the two legs (P < 0.001. Correlations in ABIs between the two methods were 0.46 for the left leg and 0.61 for the right leg; this result appears to have been caused by interobserver variation in the Doppler ABI measurements. While the trend showing greater differences between average oscillometric- and Doppler-ABIs was significant at the lower ABI ranges, there was little indication of differences in measurements having an average ABI > 1.1. The difference between the methods was suggestively larger in subjects who were smokers than in non-smokers (P = 0.09, but the difference was not affected by other potential atherosclerotic risk factors, including age at examination (P > 0.50. A larger difference at lower ABIs led to better PAD detection by the Doppler method compared to the oscillometric method (sensitivity = 50%, specificity = 100%, although the overall agreement was not small (Cohen's Kappa = 0.65. Our findings indicate that oscillometric devices can provide more accurate estimation of the prevalence of PAD in elderly individuals than the conventional Doppler

  5. Decreased levels of irisin, a skeletal muscle cell-derived myokine, are related to emphysema associated with chronic obstructive pulmonary disease

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    Sugiyama Y

    2017-03-01

    Full Text Available Yukari Sugiyama, Kazuhisa Asai, Kazuhiro Yamada, Yuko Kureya, Naoki Ijiri, Tetsuya Watanabe, Hiroshi Kanazawa, Kazuto Hirata Department of Respiratory Medicine, Graduate School of Medicine, Osaka City University, Osaka, Japan Background: Cigarette smoking-induced oxidant–antioxidant imbalance is a factor that contributes to the pathogenesis of COPD through epithelial cell apoptosis. Irisin is a skeletal muscle cell-derived myokine associated with physical activity. Irisin is also known to decrease oxidant-induced apoptosis in patients with diabetes mellitus. However, the correlation between irisin and emphysema in COPD and its role in epithelial cell apoptosis remains unknown. Subjects and methods: Forty patients with COPD were enrolled in this study. Pulmonary function tests and measurements of the percentage of low-attenuation area on high-resolution computed tomography images were performed, and the results were evaluated for correlation with serum irisin levels. The effect of irisin on cigarette-smoke extract-induced A549 cell apoptosis and the expression of Nrf2, a transcription factor for antioxidants, was also examined in vitro. Results: Serum irisin levels were significantly correlated with lung diffusing capacity for carbon monoxide divided by alveolar volume (r=0.56, P<0.01 and percentage of low-attenuation area (r=–0.79, P<0.01. Moreover, irisin significantly enhanced Nrf2 expression (P<0.05 and reduced cigarette-smoke extract-induced A549 cell apoptosis (P<0.05. Conclusion: Decreased serum irisin levels are related to emphysema in patients with COPD and involved in epithelial apoptosis, resulting in emphysema. Irisin could be a novel treatment for emphysema in patients with COPD. Keywords: chronic obstructive pulmonary disease, COPD, emphysema, irisin, Nrf2, cigarette-smoke extract, CSE, apoptosis

  6. The efficacy of antipsychotics for prolonged delirium with renal dysfunction

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    Asano S

    2017-11-01

    Full Text Available Satoko Asano, Yasuto Kunii, Hiroshi Hoshino, Yusuke Osakabe, Tetsuya Shiga, Shuntaro Itagaki, Itaru Miura, Hirooki Yabe Department of Neuropsychiatry, School of Medicine Fukushima Medical University, Fukushima, Japan Aim: Delirium is commonly encountered in daily clinical practice. To identify predictors influencing outcomes, we retrospectively examined the characteristics of inpatients with delirium who required psychiatric medication during hospitalization.Methods: We extracted all new inpatients (n=523 consulted for psychiatric symptoms at Fukushima Medical University Hospital between October 2011 and September 2013. We selected 203 inpatients with delirium diagnosed by psychiatrists. We analyzed data from 177 inpatients with delirium who received psychiatric medication. We defined an “early improvement group” in which delirium resolved in ≤3 days after starting psychiatric medication, and a “prolonged group” with delirium lasting for >3 days. Among the 83 inpatients with renal dysfunction (estimated glomerular filtration rate <60 mL/min/1.73 m2, we defined an “early improvement group with renal dysfunction” in which delirium resolved in ≤3 days after starting psychiatric medication and a “prolonged group with renal dysfunction” with delirium lasting for >3 days. We then examined differences between groups for different categorical variables.Results: Dose of antipsychotic medication at end point was significantly lower in the prolonged group with renal dysfunction than in the early improvement group with renal dysfunction.Conclusion: The results suggest that maintaining a sufficient dose of antipsychotics from an early stage may prevent prolongation of delirium even in inpatients with renal dysfunction. Keywords: antipsychotic, prolonged delirium, chronic kidney disease, pharmacokinetics 

  7. The first report on intermediate-term outcome of Ex-PRESS® glaucoma filtration device implanted under scleral flap in Japanese patients

    Directory of Open Access Journals (Sweden)

    Sugiyama T

    2011-07-01

    Full Text Available Tetsuya Sugiyama, Maho Shibata, Shota Kojima, Mari Ueki, Tsunehiko IkedaDepartment of Ophthalmology, Osaka Medical College, Takatsuki, Osaka, JapanPurpose: This paper compares the outcomes of the Ex-PRESS® Glaucoma Filtration Device (Alcon, Fort Worth, TX implant observed in Japanese patients for 1 year with those of patients undergoing trabeculectomy.Patients and methods: The subjects comprised ten eyes of ten cases with open-angle glaucoma for which filtration surgery using Ex-PRESS (P-50 was performed by one operator from February 2008 and observed for at least 1 year (Ex-PRESS Group, and eleven eyes of eleven cases for which trabeculectomy was performed by the same operator (TE Group. For both groups, mitomycin C was used and a scleral flap was created after a fornix-based incision of the conjunctiva.Results: Hypotony and choroidal detachment were observed as early postoperative complications during a 1-week period in one-third of the cases in the TE Group, and failing vision in about 45%, while these were seen in fewer cases in the Ex-PRESS Group. No significant difference in intraocular pressure (IOP was observed during the period, but IOP variations on the day following the surgery were obviously narrower in the Ex-PRESS Group than in the TE Group. Visual acuity was significantly poorer from 1 week to 3 months in the TE Group while it was stable in the Ex-PRESS Group. The Ex-PRESS Group had fewer cases of laser suture lysis and fewer administrations of glaucoma eyedrop, and no cases of progression in the stage of visual field defect.Conclusion: Filtration surgery using the Ex-PRESS is unlikely to cause early complications in Japanese patients. Similarly to the trabeculectomy, the intermediate-term control of IOP showed favorable results.Keywords: Ex-PRESS, miniature glaucoma device, complication, efficacy, Japanese

  8. Prediction of Un-erupted Canine and Premolar Tooth Size in Mixed Dentition among Bangladeshi Population.

    Science.gov (United States)

    Chokrobrty, R; Rafique, T; Ghosh, R; Biswas, A K; Sajedeen, M; Hassan, G S

    2017-10-01

    Accurate prediction of the space available to accommodate the size of the un-erupted canines and premolars plays an important role in mixed dentition in Orthodontics. This Descriptive cross sectional study was carried out in the Department of Orthodontics of Bangabandhu Sheikh Mujib Medical University from July 2014 to June 2015. Dental study models of 140 patients were taken as sample. The sample was consisted of 54 Bangladeshi males and 86 females aged between 12 to 17 years and without any previous orthodontic treatment fully erupted permanent teeth and with no dental anomalies were recruited. The study was done by measuring the mesio-distal dimensions of teeth over the dental cast. A pre-structured data collection form which includes the particulars of the patient and data was filled. All patients were having a serial number to maintain their confidentiality. The study protocol was approved by "Institutional Review Board" of Bangabandhu Sheikh Mujib Medical University (BSMMU), Dhaka, Bangladesh. Un-paired t test were used to examine differences between genders, correlation coefficients and linear regression equations were used to carry out the analysis. Descriptive statistics including means, standard deviations, and minimum-maximum values were calculated. Unpaired sample 't' tests were carried out to compare tooth size between the sexes. Logistic regression for development of new prediction formula on the basis of study sample of our population. Pearson correlation coefficient test for found the correlation between mandibular incisors and mandibular and maxillary canine and premolars in each quadrant. The difference between the present study with that of Moyers and Tanaka and Johnston were statistically significant (p<0.001). The values from Moyers and Tanaka and Johnston methods exceed while comparing to Bangladeshi population. Therefore, Moyers and Tanaka and Johnston method of prediction are not applicable for our population.

  9. Localized Donaldson-Thomas theory of surfaces

    DEFF Research Database (Denmark)

    Gholampour, Amin; Sheshmani, Artan; Yau, Shing-Tung

    2017-01-01

    , in combination with Mochizuki's formulas, we are able to express the localized DT invariants in terms of the invariants of the nested Hilbert schemes defined by the authors in [GSY17a], the Seiberg-Witten invariants of S, and the integrals over the products of Hilbert schemes of points on S. When......  is the canonical bundle of S, the Vafa-Witten invariants defined recently by Tanaka-Thomas, can be extracted from these localized DT invariants. VW invariants are expected to have modular properties as predicted by S-duality....

  10. Passport of global nuclear business. ASME code certificate acquirement and inspection practices

    International Nuclear Information System (INIS)

    Kawabata, Hiroyuki; Terajima, Makoto; Anami, Kazuhiro

    2010-01-01

    There are possibilities of Japanese nuclear industries to participate in global business such as new and additional construction of nuclear power plants in US and also Asian and other developing countries in the world. It is requisite to acquire ASME code certificate for global business participation, just as passport. This article consists of five papers on present status of ASME code certificate acquirement and inspection practices of nuclear components vendors in the area of Japanese nuclear business. Activities of JSME Committee on Power Generation Facility Codes to make JSME codes corresponded to ASME nuclear codes and standards for their international deployment are also described. (T. Tanaka)

  11. Proceeding of 35th domestic symposium on applications of structural reliability and risk assessment methods to nuclear power plants

    International Nuclear Information System (INIS)

    2005-06-01

    As the 35th domestic symposium of Atomic Energy Research Committee, the Japan Welding Engineering Society, the symposium was held titled as Applications of structural reliability/risk assessment methods to nuclear energy'. Six speakers gave lectures titled as 'Structural reliability and risk assessment methods', 'Risk-informed regulation of US nuclear energy and role of probabilistic risk assessment', 'Reliability and risk assessment methods in chemical plants', 'Practical structural design methods based on reliability in architectural and civil areas', 'Maintenance activities based on reliability in thermal power plants' and 'LWR maintenance strategies based on Probabilistic Fracture Mechanics'. (T. Tanaka)

  12. A Partnership Training Program: Studying Targeted Drug Delivery Using Nanoparticles In Breast Cancer Diagnosis and Therapy

    Science.gov (United States)

    2011-10-01

    BacMPs Mms13 ProteinA Magnetite Fe3O4 Lipid bilayer (a) Protein A MagA BMP Alkaline phosphatase conjugated antihuman IgG antibody Antigen Human IgG (b... ProteinA Antibody DNA Fusion tag Biotin Protein Streptavidin Linker (a) (b) (c) (d) (e) (f) (g) (h) (i) (j) N H 2 N H 2 Figure 7: Schematic diagram of...Kamiya, T. Tanaka, andH. Takeyama, “Chemiluminescence enzyme immunoassay using ProteinA - bacterial magnetite complex,” Journal of Magnetism and Magnetic

  13. Manchuria. A Military Bibliography of Books and Periodicals.

    Science.gov (United States)

    1981-02-26

    1896. Gresham, John C. "Cavalry Operations in the Russo-Japanese War," JMSI, 42:71-95, 219-249, 399-415; 43:49-64, 1908. Havard, Valery. "A Winter...with the Russians in Manchuria," JMSI, 38:222-234, 1908. Haward , Edwin. "The Tanaka Memorial," AQ, 44:266-271, Aug 1942. Herschelman, F. "Cavalry in the...34General Kuropatkin’s Farewell Order to the First Man- churian Army," CAV J, 17:158,159, Jul 1906. Stipler, John G. "The Japanese Campaign in Jehol, 1933

  14. Early Detection of Breast Cancer Using Molecular Beacons

    Science.gov (United States)

    2008-01-01

    DCIS tissues (Figure 6). Therefore, in addition to three tumor markers that were originally proposed for this study, we added HIF-1α and uPAR as...Ambrosini, G., Adida , C., and Altieri, D. C. (1997) Nat. Med. 3, 917–921 17. Tanaka, K., Iwamoto, S., Gon, G., Nohara, T., Iwamoto,M., andTanigawa, N...lab will only be given the ID number of each sample. All research results will be recorded using the ID numbers. The original experimental records

  15. Maximal heart rate in soccer players: Measured versus age-predicted

    Directory of Open Access Journals (Sweden)

    Pantelis T Nikolaidis

    2015-02-01

    Full Text Available Background: Although maximal heart rate (HR max is widely used to assess exercise intensity in sport training, and particularly in soccer, there are limited data with regards to the use of age-based prediction equations of HR max in soccer players. The aim of this study was to compare the measured-HR max with two prediction equations (Fox-HR max = 220 – age and Tanaka-HR max = 208 – 0.7 × age in soccer players. Methods: Adolescent (n = 162, 15.8 ± 1.5 years and adult players (n = 158, 23.4 ± 4.6 years, all members of competitive clubs, voluntarily performed a graded exercise field test (Conconi protocol to assess HR max . Results: The measured-HR max (197.6 ± 9.4 bpm in total, 200.2 ± 7.9 bpm in adolescent players, and 195.0 ± 10.0 bpm in adult players was explained by the formula HR max = 212.3 – 0.75 × age (r = −0.41, standard error of the estimate = 8.6. In the total sample, Fox-HR max overestimated measured-HR max [mean difference (95% confidence intervals = 2.8 bpm (1.6; 3.9], while Tanaka-HR max underestimated HR max [–3.3 bpm (–4.5; –2.2]. In adolescents, Fox-HR max overestimated measured-HR max [4.0 bpm (2.5; 5.5] and Tanaka-HR max underestimated HR max [– 3.2 bpm (–4.7; –1.8]. In adults, Tanaka-HR max underestimated HR max [–5.0 bpm (–5.3; –4.7], while there was not any difference between Fox-HR max and measured-HR max [1.6 bpm (–3.4; 0.2]. Conclusions: The results of this study failed to validate two widely used prediction equations in a large sample of soccer players, indicating the need for a sport-specific equation. On the other hand, the new equation that we presented should be investigated further by future studies before being adopted by coaches and fitness trainers.

  16. Analysis of radioactive pollution on the public's clothes caused by disaster of Fukushima Daiichi Nuclear Power Plant. Effect of wash on decontamination

    International Nuclear Information System (INIS)

    Nakazato, Kazuhisa; Kita, Makoto; Matsuda, Naoki

    2011-01-01

    State of radioactive pollution on the public's clothes with radioactive materials discharged to the environment by Fukushima Daiichi accident was analyzed. Effect of decontamination of radioactive polluted cloths with commercial washing machine was investigated. Results showed that around Fukushima Daiichi nuclear power plants, contamination of fission products on public's cloths was detected just after accident, but after three months later only extremely small amount of contamination on cloths was detected, which was quite difficult to detect with normal radiation detectors. Contamination of cloths was cleaned to almost 90% decontamination with general washing using commercial washing machine and detergents. (T. Tanaka)

  17. Geologic map of the northern plains of Mars

    Science.gov (United States)

    Tanaka, Kenneth L.; Skinner, James A.; Hare, Trent M.

    2005-01-01

    The northern plains of Mars cover nearly a third of the planet and constitute the planet's broadest region of lowlands. Apparently formed early in Mars' history, the northern lowlands served as a repository both for sediments shed from the adjacent ancient highlands and for volcanic flows and deposits from sources within and near the lowlands. Geomorphic evidence for extensive tectonic deformation and reworking of surface materials through release of volatiles occurs throughout the northern plains. In the polar region, Planum Boreum contains evidence for the accumulation of ice and dust, and surrounding dune fields suggest widespread aeolian transport and erosion. The most recent regional- and global-scale maps describing the geology of the northern plains are largely based on Viking Orbiter image data (Dial, 1984; Witbeck and Underwood, 1984; Scott and Tanaka, 1986; Greeley and Guest, 1987; Tanaka and Scott, 1987; Tanaka and others, 1992a; Rotto and Tanaka, 1995; Crumpler and others, 2001; McGill, 2002). These maps reveal highland, plains, volcanic, and polar units based on morphologic character, albedo, and relative ages using local stratigraphic relations and crater counts. This geologic map of the northern plains is the first published map that covers a significant part of Mars using topography and image data from both the Mars Global Surveyor and Mars Odyssey missions. The new data provide a fresh perspective on the geology of the region that reveals many previously unrecognizable units, features, and temporal relations. In addition, we adapted and instituted terrestrial mapping methods and stratigraphic conventions that we think result in a clearer and more objective map. We focus on mapping with the intent of reconstructing the history of geologic activity within the northern plains, including deposition, volcanism, erosion, tectonism, impact cratering, and other processes with the aid of comprehensive crater-density determinations. Mapped areas include all

  18. Toward introduction of risk informed safety regulation. Nuclear Safety Commission taskforce's interim report

    International Nuclear Information System (INIS)

    2006-01-01

    Nuclear Safety Commission's taskforce on 'Introduction of Safety Regulation Utilizing Risk Information' completed the interim report on its future subjects and directions in December 2005. Although current safety regulatory activities have been based on deterministic approach, this report shows the risk informed approach is expected to be very useful for making nuclear safety regulation and assurance activities reasonable and also for appropriate allocation of regulatory resources. For introduction of risk informed regulation, it also recommends pileups of experiences with gradual introduction and trial of the risk informed approach, improvement of plant maintenance rules and regulatory requirements utilizing risk information, and establishment of framework to assure quality of risk evaluation. (T. Tanaka)

  19. Comportamento de 16 porta-enxertos para o tangor Murcott na região de Itirapina-SP Behavior of sixteen rootstocks for Murcott in Itirapina, SP, Brazil

    Directory of Open Access Journals (Sweden)

    José Orlando de Figueiredo

    2006-04-01

    Full Text Available Foi monitorado o comportamento de 16 porta-enxertos para o tangor Murcott [Citrus reticulata Blanco x C. sinensis (L. Osbeck], do clone nucelar J, em experimento instalado em 1990, na Fazenda Raio de Sol, Itirapina-SP. Os porta-enxertos foram: tangelo 'Orlando' (C. reticulata Blanco x C. paradisi Macf., laranja 'Caipira DAC' [C. sinensis (L. Osbeck], limão 'Cravo'(C. limonia Osbeck, os trifoliatas 'Kryder 8-5'e 'EEL'[Poncirus trifoliata (L. Raf.] e as tangerinas 'Cleópatra' (C. reshni hort. ex. Tanaka, 'Sunki' [C. sunki (Hayata hort. ex. Tanaka], 'Batangas', 'Oneco', 'Swatow', 'Szinkon', 'Satsuma', 'Cravo', 'Dancy', 'Suen Kat' e 'Pook Ling Ming' (C. reticulata Blanco. As produções foram avaliadas de 1996 a 2003 e as maiores médias foram proporcionadas pelas plantas enxertadas nas tangerinas 'Cleópatra', 'Suen Kat', 'Pook Ling Ming' e 'Sunki' (>40 kg planta-1. Dentre os porta-enxetos que induziram as mais baixas produções, estão os dois trifoliatas, a 'Caipira DAC' e a tangerina 'Cravo' (Sixteen rootstocks were compared in a trial started in 1990, for Murcott tangor, nucellar clone "J", in Itirapina, Brazil. The rootstocks tested were Orlando tangelo (Citrus reticulata Blanco x C. paradisi Macf., sweet orange [C. sinensis (L. Osbeck] cv. Caipira DAC, Rangpur lime (C. limonia Osbeck, Poncirus trifoliata (L. Raf. cv. Kryder 8-5, P. trifoliata (L. Raf. cv. EEL and the mandarins Cleopatra (C. reshni hort. ex. Tanaka, Sunki [C. sunki (Hayata hort. ex. Tanaka] and Batangas, Oneco, Swatow, Szinkon, Satsuma, Cravo, Dancy, Suen Kat and Pook Ling Ming (C. reticulata Blanco. Fruit yield was measured per plant, in a period of seven years (1996-2003. The best yielding rootstocks were Cleopatra, Suen Kat, Pook Ling Ming and Sunki mandarins (> 40 kg tree-1. The two Trifoliate, sweet orange cv. Caipira DAC and Cravo mandarin presented the lowest yields (< 25 kg tree-1. No significant variation was observed for fruit quality characteristics of trees on

  20. Activities of nuclear human resource development in nuclear industry

    International Nuclear Information System (INIS)

    Tsujikura, Yonezo

    2010-01-01

    Since 2007, the JAIF (Japan Atomic Industrial Forum) had established the nuclear energy human resource development council to make analysis of the issue on nuclear human resource development. The author mainly contributed to develop its road map as a chairman of working group. Questionnaire survey to relevant parties on issues of nuclear human resource development had been conducted and the council identified the six relevant issues and ten recommendations. Both aspects for career design and skill-up program are necessary to develop nuclear human resource at each developing step and four respective central coordinating hubs should be linked to each sector participating in human resource development. (T. Tanaka)

  1. A realistic way for graduating from nuclear power generation

    International Nuclear Information System (INIS)

    Kikkawa, Takeo

    2012-01-01

    After Fukushima Daiichi Nuclear Power Plant accident, fundamental reform of Japanese energy policy was under way. As for reform of power generation share for the future, nuclear power share should be decided by three independent elements of the progress: (1) extension of power generation using renewable energy, (2) reduction of power usage by electricity saving and (3) technical innovation toward zero emission of coal-fired thermal power. In 2030, nuclear power share would still remain about 20% obtained by the 'subtraction' but in the long run nuclear power would be shutdown judging from difficulties in solution of backend problems of spent fuel disposal. (T. Tanaka)

  2. The role of the science council of Japan (SCJ) in peaceful uses of nuclear energy. Previous activities and expectation in future

    International Nuclear Information System (INIS)

    Kimura, Itsuro

    2005-01-01

    The Science Council of Japan (SCJ) was established as a special agency to deliberate and report on scientific matters, including research policies and grants. It also promotes the effective exchange of knowledge between researchers to achieve greater productivity in scientific research. It continuously strives to reform and innovate and leads to its 20th term based on latest amendments of the SCJ law, which will come into force in October 2005. This paper outlined its past activities on nuclear research and described expectation in its future activities to make a concrete statement on nuclear research based on comprehensive discussions from a different view of scientific research. (T. Tanaka)

  3. Take control of permissions in Leopard

    CERN Document Server

    Tanaka, Brian

    2009-01-01

    Permissions problems got you down? Turn to Unix expert Brian Tanaka's unique guide to the permissions in Mac OS X 10.5 Leopard that control access to your files, folders, and disks. You'll learn how to keep files private, when to set Ignore Permissions, what happens when you repair permissions, how to delete stuck files, and the best ways to solve permissions-related problems. Advanced concepts include the sticky bit, Leopard's more-important access control lists, bit masks, and symbolic versus absolute ways to set permissions. The book covers how to take control of permissions via the Finder

  4. Recent results from the star thrust experiment (STX)

    International Nuclear Information System (INIS)

    Slough, J.; Miller, K.

    1999-01-01

    The field reversed configuration (FRC) is a high beta plasma with a closed magnetic field geometry. Emphasizing the compact structure and high-density plasma, FRC concept has been proposed as a space power source and space propulsion system as well. The most plasma confinement concepts are unsuited for space power production due to the complex structure and large size. The stability of FRC has remained uncertain because of a lack of magnetic shear. Most experiments have indicated the robustness of FRC configuration, while stability analyses using fluid model equations lead to a definite instability, tilling mode. Recent FRC experiments have emphasized the effect of a rotating magnetic field. (M. Tanaka)

  5. ダウン症児の知能の経年的変化について

    OpenAIRE

    斎藤, 繁

    2002-01-01

    This study attempted to c1arify the development of intelligence of a child with Down' s syndrome by using longitudinal method. The chromsome nucleus type of the subject is 21-torisomy. With increasing age,the ratio IQ on the Binet-Suzuki and the Binet-Tanaka intelligence scales dec1ined gradually (see Fig. 1). At 7 years old the IQ scoes showed 85 in borderline c1ass,and then 53 at age 18. IQ at age 23 was 56. the IQs remained relatively stable over long periodes. Studies of intelligence in ...

  6. Low-energy electron scattering from pyrimidine: Similarities and differences with benzene

    Science.gov (United States)

    Jones, D. B.; Bellm, S. M.; Limão-Vieira, P.; Brunger, M. J.

    2012-05-01

    Differential cross sections for low-energy electron-impact excitation of the unresolved combinations of 23B2 + 21A1 and 31A1 + 21B2 electronic states of pyrimidine are reported. Comparisons are made with recent differential cross section measurements for the electron-impact excitation of the 1E1u and unresolved 1B1u + 3E2g electronic states of benzene [H. Kato, M. Hoshino, H. Tanaka, P. Limão-Vieira, O. Ingolfsson, L. Campbell, M.J. Brunger, J. Chem. Phys. 134 (2011) 134308.], in order to evaluate the nature of electron impact π-π∗ transitions in aromatic species.

  7. Nuclear facilities maintenance in the core of management-advanced trend in IBM Maximo asset management applications

    International Nuclear Information System (INIS)

    Seino, Satoshi; Ujihara, Satoshi; Kikuyama, Kaoru

    2009-01-01

    European and US plant owners have attached importance to plant maintenance, such as prompt grasp of plant states, implementation of maintenance and planning of maintenance programs, as one of asset management. The US advanced trend was introduced in this feature article through the applications of IBM Maximo Asset Management for nuclear facilities maintenance. World trends of nuclear power and related problems, need of nuclear facilities management, key items for introduction of maintenance management systems, required systems for nuclear maintenance management and introduction of functions of the IBM strategic asset management solution-Maximo were described respectively. (T. Tanaka)

  8. PREFACE: International Workshop on Statistical-Mechanical Informatics 2010

    Science.gov (United States)

    Inoue, Jun-ichi; Kabashima, Yoshiyuki; Tanaka, Kazuyuki; Tanaka, Toshiyuki

    2010-04-01

    statistical mechanics and information science. Editors Jun-ichi Inoue Yoshiyuki Kabashima Kazuyuki Tanaka Toshiyuki Tanaka The IW-SMI 2010 Organizing Committee: Masato Okada (University of Tokyo) Yoshiyuki Kabashima, General Chair (Tokyo Institute of Technology) Shin Ishii (Kyoto University) Jun-ichi Inoue, Publications Chair (Hokkaido University) Kazuyuki Tanaka (Tohoku University) Toshiyuki Tanaka, Vice-General Chair (Kyoto University)

  9. Virtual cathode in a spherical inertial electrostatic confinement

    International Nuclear Information System (INIS)

    Momota, Hiromu; Miley, G.H.

    1999-01-01

    Spherical inertial electrostatic confinement (SIEC) was proposed as a fusion device. Its best feature is that confinement scheme does not need any magnetic field. Ion orbits pass through the center of the device, and thus the resulting ion density profile shows strong peaking. On the other hand, electron orbits are sensitive to the electrostatic self-field. Complete solution of particle orbits and of self-field is difficult to obtain. In the present paper steady-state solutions are obtained for two extreme cases. The first case assumes no electron collision, and the second case frequent electron collisions, and thus electrons are described by the Boltzmann law. (M. Tanaka)

  10. Report of community dialog forum for residents of Fukushima Prefecture with ICRP on returning life to normal in areas affected with long term radiation from the Fukushima nuclear accident

    International Nuclear Information System (INIS)

    Kawai, Masayoshi

    2013-01-01

    Community dialog forum for residents of Fukushima prefecture with ICRP on returning life to normal in area affected with long-term radiation from the Fukushima nuclear accident was held in November 2012 in Fukushima city. At the dialog residents living in refuge, the press related, medical man of regional hospital, people handling food with inspection, personnel promoting decontamination and others stated present state and relevant issues. Anxiety for radiation and loss of public trust on administration were pointed out with their possible solution. In order to remove rumor damage, positive disclosure of information from Fukushima was quite important and indispensable. (T. Tanaka)

  11. Systematic Study of p-type Doping and Related Defects in III-Nitrides: Pathway toward a Nitride HBT

    Science.gov (United States)

    2012-11-20

    in detail in a future study, result in a best hole concentration of nearly 7.9x1019 cm-3 but a slightly inferior resistivity of 0.26 Ω-cm...Bruno, J. Cryst. Growth 252, 159 (2003). 19G. Namkoong, W. A. Doolittle, S. Kang, H. Sa, A. S. Brown and S. R. Stock , MRS Internet J. Nitride Semicond...Tanaka, Phys. Stat. Sol A 240, 273 (2003). 11. C.-C. Wu, E. A. Stach, and R. Hull, Nanotech . 18, 167505 (2007). 12. T. Sugahara, M. Hao, T. Wang

  12. Stability and stabilization of nonlinear systems and Takagi-Sugeno's fuzzy models

    Directory of Open Access Journals (Sweden)

    Blanco Yann

    2001-01-01

    Full Text Available This paper outlines a methodology to study the stability of Takagi-Sugeno's (TS fuzzy models. The stability analysis of the TS model is performed using a quadratic Liapunov candidate function. This paper proposes a relaxation of Tanaka's stability condition: unlike related works, the equations to be solved are not Liapunov equations for each rule matrix, but a convex combination of them. The coefficients of this sums depend on the membership functions. This method is applied to the design of continuous controllers for the TS model. Three different control structures are investigated, among which the Parallel Distributed Compensation (PDC. An application to the inverted pendulum is proposed here.

  13. Business model and problem about the radioactive wastes management

    International Nuclear Information System (INIS)

    Yoshida, Norimasa; Torii, Hiroyuki

    2007-01-01

    The PFI (Private Finance Initiative) is a new method to construct, maintain and manage public facilities by using private capital, management skills, and technical abilities. This article described business model and related problem for making use of PFI for the management of low-level radioactive wastes produced at reactors and nuclear fuel facilities of research institutes, universities and others. This service projects could provide public services with higher quality while reducing the business costs to the country and the local authority. Social impacts, business models and risks of the projects had been assessed. (T. Tanaka)

  14. Training enhancement of Japanese nuclear international talented staffs hurried by rushing in global age

    International Nuclear Information System (INIS)

    Oka, Yoshiaki; Saito, Masaki; Ahn, Joonhong

    2010-01-01

    Nuclear power has attracted international attention with its beneficial roles in realizing a low-carbon society and serving as an energy source. Many countries would expect cooperation with Japanese nuclear industry continuing construction of nuclear power plants. Such global requests would inevitably require training enhancement of Japanese international talented staffs and establishment of human networks in younger generation. This feature article collected related activities of academia and electric utilities, status of Asian trainee acceptance and proposals from persons with experience of studying abroad and staying overseas organization. Issues related with training enhancement and their countermeasures were broadly discussed. (T. Tanaka)

  15. Proceeding of 29th domestic symposium on computational science and nuclear energy in the 21st century

    International Nuclear Information System (INIS)

    2001-10-01

    As the 29th domestic symposium of Atomic Energy Research Committee, the Japan Welding Engineering Society, the symposium was held titled as Computational science and nuclear energy in the 21st century'. Keynote speech was delivered titled as 'Nuclear power plants safety secured by computational science in the 21st century'. Three speakers gave lectures titled as 'Materials design and computational science', 'Development of advanced reactor in the 21st century' and 'Application of computational science to operation and maintenance management of plants'. Lectures held panel discussion titled as 'Computational science and nuclear energy in the 21st century'. (T. Tanaka)

  16. Structural analysis program of plant piping system. Introduction of AutoPIPE V8i new feature. JSME PPC-class 2 piping code

    International Nuclear Information System (INIS)

    Motohashi, Kazuhiko

    2009-01-01

    After an integration with ADLPipe, AutoPIPE V8i (ver.9.1) became the structural analysis program of plant piping system featured with analysis capability for the ASME NB Class 1 and JSME PPC-Class 2 piping codes including ASME NC Class 2 and ASME ND Class 3. This article described analysis capability for the JSME PPC-Class 2 piping code as well as new general features such as static analysis up to 100 thermal, 10 seismic and 10 wind load cases including different loading scenarios and pipe segment edit function: join, split, reverse and re-order segments. (T. Tanaka)

  17. Advanced scientific computational methods and their applications to nuclear technologies. (4) Overview of scientific computational methods, introduction of continuum simulation methods and their applications (4)

    International Nuclear Information System (INIS)

    Sekimura, Naoto; Okita, Taira

    2006-01-01

    Scientific computational methods have advanced remarkably with the progress of nuclear development. They have played the role of weft connecting each realm of nuclear engineering and then an introductory course of advanced scientific computational methods and their applications to nuclear technologies were prepared in serial form. This is the fourth issue showing the overview of scientific computational methods with the introduction of continuum simulation methods and their applications. Simulation methods on physical radiation effects on materials are reviewed based on the process such as binary collision approximation, molecular dynamics, kinematic Monte Carlo method, reaction rate method and dislocation dynamics. (T. Tanaka)

  18. Artificial immune system for effective properties optimization of magnetoelectric composites

    Science.gov (United States)

    Poteralski, Arkadiusz; Dziatkiewicz, Grzegorz

    2018-01-01

    The optimization problem of the effective properties for magnetoelectric composites is considered. The effective properties are determined by the semi-analytical Mori-Tanaka approach. The generalized Eshelby tensor components are calculated numerically by using the Gauss quadrature method for the integral representation of the inclusion problem. The linear magnetoelectric constitutive equation is used. The effect of orientation of the electromagnetic materials components is taken into account. The optimization problem of the design is formulated and the artificial immune system is applied to solve it.

  19. Exploitation of condition monitoring technology for equipment by infrared thermography use

    International Nuclear Information System (INIS)

    Shimada, H.

    2005-01-01

    Recently exploitation of condition monitoring technology for equipment by infrared thermography use has been established in US nuclear power plants (NPPs) because of its effectiveness for accidents prevention. Meanwhile, this technology has never been used in Japanese NPPs. In order to make use of it with ease at NPPs, measuring manuals were provided including the table of emissivity dependent on equipment painting specification and measuring positions kept out of background heat sources at measurement. At in-site application tests, temperature increase points at power cable connection parts were discovered, which showed its effectiveness. (T. Tanaka)

  20. Transfer of knowledge to the next generation for safety assurance-present state and subjects of organizational approach

    International Nuclear Information System (INIS)

    Ueno, Akira

    2005-01-01

    Recently, many organizational accidents have occurred in the electric power, railroad, airline, chemical, food and medical industries due to a lack of knowledge and technology indispensable for effective management. This raises the question of how important transfer of technology and knowledge management is in organizations. This paper clarified present state and related subjects of this problem in terms of human and organizational factors and introduced some advanced cases for the solution so as to find a way to practice the situation-dependent combined approach of existing organizational training and latest knowledge science. (T. Tanaka)

  1. Natural circular dichroism of amino acid films observed in soft X-ray and VUV region using polarizing undulator

    International Nuclear Information System (INIS)

    Nakagawa, K.; Kaneko, F.; Ohta, Y.; Tanaka, M.; Kitada, T.; Agui, A.; Fujii, F.; Yokoya, A.; Yagi-Watanabe, K.; Yamada, T.

    2005-01-01

    We observed the natural circular dichroism NCD of amino acid films in the soft X-ray region for the first time [M. Tanaka, K. Nakagawa, A. Agui, K. Fujii, A. Yokoya, Physica Scripta, in press]. Based on the success, a new generation of detection system is now under preparation. Vacuum ultraviolet NCD of amino acid films was measured successfully using a polarizing undulator [H. Onuki, Nucl. Instrum. Meth. A 246 (1986) 94] installed at the TERAS electron storage ring at AIST, Tsukuba, Japan. A result of NCD measurement for alanine films is described in detail

  2. Second mid-term business plan results

    International Nuclear Information System (INIS)

    Kusakabe, Masashi; Matsushita, Satoru; Miyahara, Nobuyuki

    2011-01-01

    This feature presented the second mid-term business plan results of National Institute of Radiological Sciences (NIRS). NIRS started its second five-year-term project in 2006, focusing on radiation life science research, and radiation protection and emergency medicine. The radiation life science research had been conducted at research centers on heavy charged particle therapy for cancer treatment, assessment of radiation effects for radiotherapy, and molecular imaging for early diagnosis and treatment planning. NIRS also provided international open laboratory for experts of many fields to collaborate to enhance the levels of radiological sciences. Fundamental technology center had supported research centers through technology development. (T. Tanaka)

  3. Think over nuclear safety. ''Information asymmetry'' and ''comminicative action''

    International Nuclear Information System (INIS)

    Suzuki, Atsuyuki

    2006-01-01

    Nuclear safety should be fully understood not only technically but also socially. In order to think over nuclear safety socially, four different concepts were recommended to refer, which were ''procedural rationality'', information asymmetry'', ''certainty effect'' and ''communicative action'' proposed by three economists and a philosopher respectively. Risk-based communication approach for nuclear safety could be effective within the higher frequency area than safety goal, but not good for the lower frequency area than safety goal. The latter could be highly subjective and more qualitative. For this area, ''safety communication'' would be highly maintained with taking account of existence of ''information asymmetry'' and need of ''communicative action''. (T.Tanaka)

  4. Long-term preventive maintenance of instrumentation control equipment for PWR plants

    International Nuclear Information System (INIS)

    Sugitani, S.; Nanba, M.

    2006-01-01

    Since the PWR plants in Japan have been operated more than 30 years, main instrumentation control equipment of analog systems has been renewed to digital control systems. Renewal works had to be done in short period within periodical inspection term and for several facilities. The Mitsubishi LTD group had been provided with these market needs by its digital control system (MELTAC-NplusR 3) applicable to main instrumentation control equipment for primary and secondary systems and had already finished the renewal for practical plants. (T. Tanaka)

  5. Perspective of nuclear power policy change and trend of nuclear industry activities from energy policy of European countries

    International Nuclear Information System (INIS)

    Murakami, Tomoko; Matsuo, Yuji; Nagatomi, Yu

    2009-01-01

    European countries of nuclear power phase-out have changed to commit to the future of nuclear energy due to the intended low-carbon power, the energy security concerns and the need of replacement reactors as current reactors approach the end of operating lives, as Italian government has passed legislation to build new nuclear power plants. This article described the perspective of nuclear power policy changes in UK, Italy an Sweden and the business trend and the SWOT analysis of related electric utilities (EDF, Enel and Vattenfall) and nuclear industries (Areva NP, Sheffield Forgemasters, ENSA and Studsvik). Policy implications obtained from this analysis were commented for Japanese nuclear industry activities. (T. Tanaka)

  6. Signal Estimation with Low Infinity Norm Error by Minimizing the Mean p Norm Error

    Science.gov (United States)

    2014-03-19

    mixing systems are popular models used in many settings such as compressed sensing [7, 8], regression [9, 10], and multiuser detection [11]. Signal...least squares,” SIAM J. Matrix Anal. Appl., vol. 11, no. 3, pp. 466–480, July 1990. [11] D. Guo and C. C. Wang, “ Multiuser detection of sparsely spread...Allerton Conf. Commun., Control, Comput., Sep. 2009, pp. 52–59. [23] T. Tanaka, “A statistical-mechanics approach to large-system analysis of CDMA multiuser

  7. Nuclear energy in Europe focusing on France. Its past and today

    International Nuclear Information System (INIS)

    Murano, Hirokazu

    2010-01-01

    This article is a reprint of lecture documents of an energy study group in Japan, January 2010, with a title, Present status and trend to nuclear energy in Europe focusing on France. Main topics were reason why France has advanced nuclear energy in success, its past history, nuclear fuel cycle, exporter of electricity in EU and future policy of nuclear power. New construction plants of nuclear power plants in UK, Italy, India and Asian countries and world's trend of nuclear fuel cycle were also discussed with questions and answers on Japanese related activities. (T. Tanaka)

  8. Prospects of Iran's nuclear development and non-proliferation issue

    International Nuclear Information System (INIS)

    Sakanashi, Sachi; Murakami, Tomoko

    2007-01-01

    Iran's nuclear issue might address how nuclear development could be compatible with international non-proliferation framework. This article presented the review on Iran's energy state and nuclear needs to free up oil and gas for export, Iran's interaction with international society, history of Iran's nuclear development and US and IAEA policy on Iran's nuclear issue. Finally future expected attitudes of international society and Iran were discussed in terms of the importance of Iran's resources on energy security in the world and also realization of effective non-proliferation framework. (T. Tanaka)

  9. Comparative assessment of the cytotoxicity of six anti-inflammatory eyedrops in four cultured ocular surface cell lines, as determined by cell viability scores

    Directory of Open Access Journals (Sweden)

    Ayaki M

    2012-11-01

    Full Text Available Masahiko Ayaki,1 Atsuo Iwasawa,2 Yoshimi Niwano31Department of Ophthalmology, International University of Health and Welfare, Mita Hospital, Tokyo, 2Department of Bioengineering, Graduate School of Bioscience and Biotechnology, Tokyo Institute of Technology, Yokohama, 3Laboratory for Redox Regulation, Tohoku University Graduate School of Dentistry, Sendai, JapanPurpose: Anti-inflammatory eyedrops are often used in the treatment of corneal epithelial disorders. In the present study, we evaluated the cytotoxicity of six anti-inflammatory eyedrops in four ocular surface cell lines.Methods: The cytotoxicity of six commercially available anti-inflammatory ophthalmic solutions (ie, diclofenac, bromfenac, pranoprofen, betamethasone, and fluoromethorone was assessed in three corneal cell lines and one conjunctival cell line. Cell viability was determined by the 3-(4,5-dimethyl-2 thiazoyl-2,5-diphenyl-2H-tetrazolium bromide and neutral red assays after exposing the cells to 10, 30, and 60 minutes of onefold, twofold, and tenfold dilutions of the drugs. Cytotoxicity was compared using the cell viability score (CVS, an integrated cytotoxic parameter that takes various factors into account, such as dilution by tear fluid or concentration by evaporation, drug exposure time, and ocular surface cell type.Results: Based on the CVS scores, the order of the anti-inflammatory eyedrops tested from least to most cytotoxic, with the active ingredient %CVS50, and %CVS40/80 for each solution given in parentheses, was as follows: Rinderon® (betamethasone, 100%, 100% >0.02% Flumethoron® (fluoromethorone, 68%, 22% = 0.1% Flumethoron® (fluoromethorone, 76%, 22% >Bronuck® (0.1% bromfenac, 53%, −8% = Diclod® (0.1% diclofenac, 44%, −15% = Niflan® (pranoprofen, 50%, −19%. Rinderon® exhibited the least toxicity of all the anti-inflammatory eyedrops tested. Eyedrops containing non-steroidal anti-inflammatory drugs exhibited greater cytotoxicity than those containing

  10. Eta Carinae in the Context of the Most Massive Stars

    Science.gov (United States)

    Gull, Theodore R.; Damineli, Augusto

    2009-01-01

    directions) The Science Organizing Committee: Co-chairs: Augusto Damineli (Brazil) & Theodore R. Gull (USA). Members: D. John Hillier (USA), Gloria Koenigsberger (Mexico), Georges Meynet (Switzerland), Nidia Morrell (Chile), Atsuo T. Okazaki (Japan), Stanley P. Owocki (USA), Andy M.T. Pol- lock (Spain), Nathan Smith (USA), Christiaan L. Sterken (Belgium), Nicole St Louis (Canada), Karel A. van der Hucht (Netherlands), Roberto Viotti (Italy) and GerdWeigelt (Germany)

  11. Performance of 'Okitsu' Satsuma Mandarin on nine rootstocks

    Directory of Open Access Journals (Sweden)

    Zuleide Hissano Tazima

    2013-12-01

    Full Text Available Mandarins have become increasingly valued as citrus fruits for the fresh market due to the easy peeling, attractive flavor, and health and nutritional properties. Plant growth and yield, and characteristics of fruits of 'Okitsu' Satsuma mandarin (Citrus unshiu Marc. trees grafted on nine rootstocks were evaluated in Londrina, northern Paraná, Brazil. The rootstocks were: 'Rangpur' lime (Citrus limonia Osb.; 'Cleopatra' (Citrus reshni hort. ex Tanaka and 'Sunki' mandarins (Citrus sunki hort. ex Tanaka; 'C-13' [Citrus sinensis × Poncirus trifoliata (L. Raf.] and 'Carrizo' citranges [C. sinensis × P. trifoliata (L. Raf.]; 'Volkamer' lemon (Citrus volkameriana V. Ten. & Pasq.; trifoliate orange [P. trifoliata (L. Raf.; 'Caipira DAC' sweet orange [C. sinensis (L. Osb.] and 'Swingle' citrumelo [Citrus paradisi Macfad. cv. Duncan × P. trifoliata (L. Raf.]. The highest plant growth was for the trees on 'Cleopatra' mandarin and 'Caipira DAC' sweet orange. In contrast, the smallest size was for the trees on 'Volkamer' lemon and trifoliate orange. The largest difference between the trunk diameter below and above the grafting point was induced by 'Swingle' citrumelo. Trees of 'Okitsu' Satsuma mandarin on 'Swingle' citrumelo presented the highest yield, while 'C-13', 'Carrizo', 'Sunki', and 'Swingle' induced the largest fruit masses. With regard to fruit characteristics, 'Carrizo' and trifoliate orange induced the best ratio and juice content. Based on theoretical values, 'Rangpur' lime and 'Volkamer' lemon induced the lowest yields

  12. Anomalous attenuation of the ultrasonic waves in n-InSb in a pinched plasma state

    International Nuclear Information System (INIS)

    Takase, Yoshihiko; Murao, Yukinobu; Yamada, Nobuo; Kitamura, Masanao; Odajima, Akira

    1975-01-01

    A few years ago Tanaka and others of our group reported that the longitudinal ultrasonic waves travelling along the direction in n-InSb sample were anomalously attenuated when it was in a pinched plasma state under a strong electric field applied along this direction (K. Tanaka et al.: Phys. Letters 39 A (1972) 43). They examined various possible causes of dumping qualitatively and concluded that this might be the Akhieser loss due to the raise in temperature of the sample caused by the pinch effects. We applied the DAJ theory to this problem and calculated the radial variations of the carrier density and the temperature in the InSb sample. It was found that there is no such large temperature raise over a wide region of the sample to cause Akhieser loss as large as the observed attenuation. We further measured the frequency dependence of the attenuation and found that it seems to be of the form ωsup(n) with n=4 in the low frequency region and with n asymptotically equals 1 in the high frequency region, when the dc pulse was over 60 A. Taking into account these theoretical and experimental findings we must look for some causes for this dumping other than the Akhieser loss, such as diffraction loss due to inhomogeneity in elastic properties due to the thermal gradient in the sample. (auth.)

  13. Averaged strain energy density-based synthesis of crack initiation life in notched steel bars under torsional fatigue

    Directory of Open Access Journals (Sweden)

    Filippo Berto

    2016-10-01

    Full Text Available The torsional fatigue behaviour of circumferentially notched specimens made of austenitic stainless steel, SUS316L, and carbon steel, SGV410, characterized by different notch root radii has been recently investigated by Tanaka. In that contribution, it was observed that the total fatigue life of the austenitic stainless steel increases with increasing stress concentration factor for a given applied nominal shear stress amplitude. By using the electrical potential drop method, Tanaka observed that the crack nucleation life was reduced with increasing stress concentration, on the other hand the crack propagation life increased. The experimental fatigue results, originally expressed in terms of nominal shear stress amplitude, have been reanalysed by means of the local strain energy density (SED averaged over a control volume having radius R0 surrounding the notch tip. To exclude all extrinsic effects acting during the fatigue crack propagation phase, such as sliding contact and/or friction between fracture surfaces, crack initiation life has been considered in the present work. In the original paper, initiation life was defined in correspondence of a 0.1÷0.4-mm-deep crack. The control radius R0 for fatigue strength assessment of notched components, thought of as a material property, has been estimated by imposing the constancy of the averaged SED for both smooth and cracked specimens at NA = 2 million loading cycles

  14. Free energy of cluster formation and a new scaling relation for the nucleation rate

    International Nuclear Information System (INIS)

    Tanaka, Kyoko K.; Tanaka, Hidekazu; Diemand, Jürg; Angélil, Raymond

    2014-01-01

    Recent very large molecular dynamics simulations of homogeneous nucleation with (1 − 8) × 10 9 Lennard-Jones atoms [J. Diemand, R. Angélil, K. K. Tanaka, and H. Tanaka, J. Chem. Phys. 139, 074309 (2013)] allow us to accurately determine the formation free energy of clusters over a wide range of cluster sizes. This is now possible because such large simulations allow for very precise measurements of the cluster size distribution in the steady state nucleation regime. The peaks of the free energy curves give critical cluster sizes, which agree well with independent estimates based on the nucleation theorem. Using these results, we derive an analytical formula and a new scaling relation for nucleation rates: ln J ′ /η is scaled by ln S/η, where the supersaturation ratio is S, η is the dimensionless surface energy, and J ′ is a dimensionless nucleation rate. This relation can be derived using the free energy of cluster formation at equilibrium which corresponds to the surface energy required to form the vapor-liquid interface. At low temperatures (below the triple point), we find that the surface energy divided by that of the classical nucleation theory does not depend on temperature, which leads to the scaling relation and implies a constant, positive Tolman length equal to half of the mean inter-particle separation in the liquid phase

  15. Not salt taste perception but self-reported salt eating habit predicts actual salt intake.

    Science.gov (United States)

    Lee, Hajeong; Cho, Hyun-Jeong; Bae, Eunjin; Kim, Yong Chul; Kim, Suhnggwon; Chin, Ho Jun

    2014-09-01

    Excessive dietary salt intake is related to cardiovascular morbidity and mortality. Although dietary salt restriction is essential, it is difficult to achieve because of salt palatability. However, the association between salt perception or salt eating habit and actual salt intake remains uncertain. In this study, we recruited 74 healthy young individuals. We investigated their salt-eating habits by questionnaire and salt taste threshold through a rating scale that used serial dilution of a sodium chloride solution. Predicted 24-hr urinary salt excretions using Kawasaki's and Tanaka's equations estimated dietary salt intake. Participants' mean age was 35 yr, and 59.5% were male. Salt sense threshold did not show any relationship with actual salt intake and a salt-eating habit. However, those eating "salty" foods showed higher blood pressure (P for trend=0.048) and higher body mass index (BMI; P for trend=0.043). Moreover, a salty eating habit was a significant predictor for actual salt intake (regression coefficient [β] for Kawasaki's equation 1.35, 95% confidence interval [CI] 10-2.69, P=0.048; β for Tanaka's equation 0.66, 95% CI 0.01-1.31, P=0.047). In conclusion, a self-reported salt-eating habit, not salt taste threshold predicts actual salt intake.

  16. Theories of glass formation and the glass transition.

    Science.gov (United States)

    Langer, J S

    2014-04-01

    This key-issues review is a plea for a new focus on simpler and more realistic models of glass-forming fluids. It seems to me that we have too often been led astray by sophisticated mathematical models that beautifully capture some of the most intriguing features of glassy behavior, but are too unrealistic to provide bases for predictive theories. As illustrations of what I mean, the first part of this article is devoted to brief summaries of imaginative, sensible, but disparate and often contradictory ideas for solving glass problems. Almost all of these ideas remain alive today, with their own enthusiastic advocates. I then describe numerical simulations, mostly by H Tanaka and coworkers, in which it appears that very simple, polydisperse systems of hard disks and spheres develop long range, Ising-like, bond-orientational order as they approach glass transitions. Finally, I summarize my recent proposal that topologically ordered clusters of particles, in disordered environments, tend to become aligned with each other as if they were two-state systems, and thus produce the observed Ising-like behavior. Neither Tanaka's results nor my proposed interpretation of them fit comfortably within any of the currently popular glass theories.

  17. Reassignment of Millimeterwave Spectrum of the HCN Internal Rotation Bands of H_2-HCN

    Science.gov (United States)

    Harada, Kensuke; Yamanaka, Risa; Tanaka, Keiichi

    2011-06-01

    The H_2-HCN complex is a weakly bound molecular complex and we have reported the pure rotational transitions of H_2-HCN in the MMW region. footnote{M. Ishiguro, T. Tanaka, K. Harada, C. J. Whitham and K. Tanaka, J. Chem. Phys. 115, 5155 (2001).} According to the results, ortho- and para-H_2 complexes have different structures in the ground state, H_2 is attached to the nitrogen and hydrogen end of HCN, respectively, for ortho- and para-H_2 complexes and the Σ symmetry has been confirmed for both species. We also reported the MMW spectroscopy of j=1-0 internal rotation band of H_2-HCN in 2006 footnote{M. Hagi, K. Harada, and K. Tanaka, The 61st International Symposium on Molecular Spectroscopy, TE01, (2006).}, where j is the quantum number for the HCN internal rotation. Although we assigned most of intense lines to the Σ_1-Σ_0 and Π_1-Σ_0 bands of (ortho)H_2-HCN, some intense lines are unidentified. To confirm their assignments, we performed the MMW-MMW double resonance spectroscopy in the present study and came to the conclusion that our previous assignments of Σ_1-Σ_0 and Π_1-Σ_0 bands should be changed, and then all of the intense lines are finally assigned to the Π_1-Σ_0 (R_0, R_1,R_2, Q_1, Q_2, and P_2) and Σ_1-Σ_0 (R_0, and P_2) bands. The band origins of the Σ_1-Σ_0 and Π_1-Σ_0 bands of (ortho)H_2-HCN newly determined are 187 and 165 GHz, respectively. They are larger than those of Ne-HCN (133 and 107 GHz) but comparable with those of Ar-HCN (165 and 182 GHz, their order is reversed) indicating that the potential anisotropy of (ortho)H_2-HCN is larger than that of Ne-HCN but comparable with that of Ar-HCN. The mean square amplitudes of HCN for excited states ( 57^circ and 51^circ for Σ_1 and Π_1), given by the analysis of hyperfine structure of the nitrogen nucleus, are much larger than that (33^circ) of the ground Σ_0 state. A plenty of weak lines in the 100-300 GHz region are still unassigned, possibly due to the higher internal rotation

  18. Tipepidine in children with attention deficit/hyperactivity disorder: a 4-week, open-label, preliminary study

    Directory of Open Access Journals (Sweden)

    Sasaki T

    2014-01-01

    Full Text Available Tsuyoshi Sasaki,1,2 Kenji Hashimoto,3 Masumi Tachibana,1 Tsutomu Kurata,1 Keiko Okawada,1 Maki Ishikawa,1 Hiroshi Kimura,2 Hideki Komatsu,2 Masatomo Ishikawa,2 Tadashi Hasegawa,2 Akihiro Shiina,1 Tasuku Hashimoto,2 Nobuhisa Kanahara,3 Tetsuya Shiraishi,2 Masaomi Iyo1–31Department of Child Psychiatry, Chiba University Hospital, 2Department of Psychiatry, Chiba University Graduate School of Medicine, 3Division of Clinical Neuroscience, Chiba University Center for Forensic Mental Health, Chiba, JapanBackground: Tipepidine (3-[di-2-thienylmethylene]-1-methylpiperidine has been used solely as a nonnarcotic antitussive in Japan since 1959. The safety of tipepidine in children and adults has already been established. It is reported that tipepidine inhibits G-protein-coupled inwardly rectifying potassium (GIRK-channel currents. The inhibition of GIRK channels by tipepidine is expected to modulate the level of monoamines in the brain. We put forward the hypothesis that tipepidine can improve attention deficit/hyperactivity disorder (ADHD symptoms by modulating monoaminergic neurotransmission through the inhibition of GIRK channels. The purpose of this open-label trial was to confirm whether treatment with tipepidine can improve symptoms in pediatric patients with ADHD.Subjects and methods: This was a 4-week, open-label, proof-of-efficacy pilot study for pediatric subjects with ADHD. Ten pediatric ADHD subjects (70% male; mean age, 9.9 years; combined [inattentive and hyperactive/impulsive] subtype, n=7; inattentive subtype, n=3; hyperimpulsive subtype, n=0 received tipepidine hibenzate taken orally at 30 mg/day for 4 weeks. All subjects were assessed using the ADHD Rating Scale IV (ADHD-RS, Japanese version, and the Das–Naglieri Cognitive Assessment System (DN-CAS, Japanese version.Results: A comparison of baseline scores and 4-week end-point scores showed that all the ADHD-RS scores (total scores, hyperimpulsive subscores, and inattentive subscores

  19. The History, present state, and future prospects of the Asian College of Psychosomatic Medicine (ACPM

    Directory of Open Access Journals (Sweden)

    Ishizu Hiroshi

    2012-01-01

    Full Text Available Abstract The Asian College of Psychosomatic Medicine (ACPM was founded as the Asian Chapter of the International College of Psychosomatic Medicine (ICPM-AC in Tokyo on April 12, 1982. The first president was Hitoshi ISHIKAWA (Japan, the vice-presidents were Mahalingam MAHADEVAN (Malaysia and Burton G.BURTON-BRADLEY (Papua- New Guinea, and the general secretary was Sueharu TSUTSUI (Japan. Five years previously, preparation for creation of the ICPM-AC was started at the 4th World Congress of the International College of Psychosomatic Medicine (ICPM held in Kyoto, Japan, September 5-9, 1977. The First Congress of the ICPM-AC was held by the President Yujiro IKEMI in Tokyo on May 19-20, 1984. The main members in the early stage were Y. IKEMI, H. ISHIKAWA, S. TSUTSUI, Taisaku KATSURA, Tetsuya NAKAGAWA. Hiroyuki SUEMATSU and others from Japan and Hsien RIN (Taiwan, Seock Young KANG (Korea, M. MAHADEVAN. B.G. BURTON-BRADLEY and others from other Asian countries. Thereafter, academic congresses of the ICPM-AC, the 2nd to the 9th, were held approximately every two years, in Japan, India, Malaysia, Taiwan, Korea, and China. The name was changed to the Asian College of Psychosomatic Medicine (ACPM, and the 10th to 14th congresses were held in Taiwan, Okinawa (Japan, Australia, Korea, and China. The current president of the Executive Board of ACPM is Chiharu KUBO, the Director of Kyushu University Hospital. The next academic congress is the 15th ACPM and will be hosted by Tserenkhuugyin LKHAGVASUREN in Ulaanbaatar, Mongolia from August 24-26, 2012. Participating countries have expanded to include Asian-Oceanic countries such as Mongolia, Micronesia, Australia and Sri Lanka. The main themes of the congresses have focused on psychosomatic disorders, culture - bound syndromes, oriental medicine, etc... To date,"Health promotion"by raising the level of mental health based on psychoneuroendocrinoimmunomodulation has been very important. Prevention is also

  20. Dual-tasking over an extended walking distance is associated with falls among community-dwelling older adults

    Directory of Open Access Journals (Sweden)

    Hirashima K

    2015-04-01

    Full Text Available Kenichi Hirashima,1,2 Yumi Higuchi,1 Masakazu Imaoka,1 Emiko Todo,1 Tomomi Kitagawa,1 Tetsuya Ueda11Graduate School of Comprehensive Rehabilitation, Osaka Prefecture University, Habikino Campus, Habikino City, Osaka, Japan; 2Faculty of Health and Welfare, Department of Physical Therapy, Tokushima Bunri University, Nishihamaboji, Yamashiro Town, Tokushima City, Tokushima, Japan Aim: Dual-task methods, in which walking is the primary task, are not sufficient for accurately screening for the risk of falls among healthy older adults. Therefore, the goal of this research was to investigate whether using a dual-task method over an extended walking distance can predict falls among community-dwelling older adults.Methods: We enrolled independent community-dwelling adults aged ≥65 years. Physical performance, cognitive function, psychological function, and a dual-task test were assessed at baseline. Our dual-task test required the subjects to walk 60 m while stepping over lines. The intervals between the lines ranged from 50–100 cm and were unequal. Falls and fall-related injuries were measured over a 12-month follow-up period using monthly postal surveys. Results: Ninety-two of 118 subjects (mean age, 75.4±5.5 years completed the 12-month follow-up. Sixteen (17.4% of fallers had injurious falls or fell more than or equal to two times. There were no significant differences between the fallers and non-fallers, except in age and in the number of missteps during the dual-task test when walking ≥40 m. The Kaplan–Meier analysis revealed that those who had more than one misstep while walking ≥40 m had a significantly higher incidence of injurious or multiple falls than those who had no missteps.Conclusion: Our findings suggest that the dual-task method with an extended walking distance may be able to predict falls among community-dwelling older adults. Keywords: cohort study, community-dwelling older adults, dual-task, falls

  1. Retrospective study on the efficacy of a low-carbohydrate diet for impaired glucose tolerance

    Directory of Open Access Journals (Sweden)

    Maekawa S

    2014-06-01

    Full Text Available Satoshi Maekawa,1 Tetsuya Kawahara,2 Ryosuke Nomura,1 Takayuki Murase,1 Yasuyoshi Ann,1 Masayuki Oeholm,1 Masaru Harada31Department of Gastroenterology and Hepatology, 2Division of Endocrinology and Metabolism, Department of Internal Medicine, Japan Labor Health and Welfare Organization, Niigata Rosai Hospital, Joetsu, Niigata, Japan; 3Third Department of Internal Medicine, University of Occupational and Environmental Health, Iseigaoka, Yahata-nishi-ku, Kitakyushu, Fukuoka, JapanBackground: In recent years, the number of people with impaired glucose tolerance (IGT has increased steadily worldwide. It is clear that the prevention of diabetes is important from the perspective of public health, medical care, and economics. It was recently reported that a low-carbohydrate diet (LCD is useful for achieving weight loss and glycemic control, but there is no information about the effects of the LCD on IGT. We designed a 7-day in-hospital educational program focused on the LCD for IGT.Methods: The subjects were 72 patients with IGT (36 in the LCD group and 36 in the control group who were enrolled from April 2007–March 2012 and followed for 12 months. We retrospectively compared the LCD group with the control group.Results: In 69.4% of the LCD group, blood glucose was normalized at 12 months and the 2-hour plasma glucose level in the oral glucose tolerance test (OGTT was reduced by 33 mg/dL. In addition, the incidence of diabetes was significantly lower in the LCD group than in the control group at 12 months (0% versus 13.9%, P=0.02. The LCD group showed a significant decrease in fasting plasma glucose, hemoglobin A1c, the homeostasis model of assessment of insulin resistance value, body weight and serum triglycerides (TGs at 12 months, while there was a significant increase of the serum high-density lipoprotein (HDL cholesterol level.Conclusion: The LCD is effective for normalizing blood glucose and preventing progression to type 2 diabetes in

  2. A perspective on the benefit-risk assessment for new and emerging pharmaceuticals in Japan

    Directory of Open Access Journals (Sweden)

    Tanimoto T

    2015-03-01

    Full Text Available Tetsuya Tanimoto Division of Social Communication System for Advanced Clinical Research, Institute of Medical Science, University of Tokyo, Tokyo, Japan Abstract: The universal health care system in Japan is facing a historical turning point as a result of the increasing fiscal burden, rapidly aging society, and a decreasing population. To understand the challenges and opportunities in the Japanese pharmaceutical market, which occupies one tenth of the global share, this review highlights several issues related to the benefit-risk assessment that is unique to the modern Japanese society: 1 regulatory system for new drug development; 2 health hazards related to pharmaceuticals (“Yakugai” in Japanese; 3 drug lag; 4 problems and controversies in the vaccination policy; and 5 clinical study misconduct. The regulatory process places a significant importance on Japanese data collection regardless of data accumulation from other countries. Because Yakugai has repeatedly caused tragedies and social disputes historically, the regulatory judgments generally tend to be more prudential when safety concerns are raised for new and emerging pharmaceuticals. Such a regulatory system has caused more than several years of approval delays compared to delays in other countries. The problem of drug lag still lingers on despite several regulatory system revisions, while the solution is incompatible with the elimination of Yakugai because the lag potentially reduces the risk of unpredictable adverse events. The Japanese vaccination policy has also received a lot of criticism, and needs improvements so that the decision-making process can be more transparent and scientifically based. Additionally, repeated clinical study misconduct damaged the reputation of Japanese clinical studies with unnecessary defrayment in health insurance; therefore, the medical community must change its inappropriate relationship with the industry. The problems surrounding pharmaceuticals

  3. Virologic breakthrough in a patient with chronic hepatitis B by combination treatment with tenofovir disoproxil fumarate and entecavir

    Directory of Open Access Journals (Sweden)

    Suzuki F

    2014-06-01

    Full Text Available Fumitaka Suzuki,1,2 Hitomi Sezaki,1 Norio Akuta,1 Yoshiyuki Suzuki,1 Yusuke Kawamura,1 Tetsuya Hosaka,1 Masahiro Kobayashi,1 Satoshi Saitoh,1 Yasuji Arase,1 Kenji Ikeda,1 Mariko Kobayashi,3 Sachiyo Watahiki,3 Rie Mineta,3 Yukiko Suzuki,3 Hiromitsu Kumada1 1Department of Hepatology, Toranomon Hospital, Tokyo, Japan; 2Okinaka Memorial Institute for Medical Research, Tokyo, Japan; 3Research Institute for Hepatology, Toranomon Branch Hospital, Kawasaki, Japan Abstract: Tenofovir disoproxil fumarate (TDF is widely used to treat hepatitis B virus (HBV patients in the USA and Europe. No confirmed report of resistance selection during treatment with TDF in treatment-naïve and nucleoside/nucleotide analog-treated chronic hepatitis B patients has yet been reported. Here, we report for the first time a patient with chronic hepatitis B and cirrhosis who emerged with virologic breakthrough during combination therapy with TDF and entecavir (ETV, against ETV-resistant virus. A 51-year-old Japanese woman with hepatitis B e-antigen (HBeAg, whose genotype was C, received ETV monotherapy continuously followed by TDF and ETV combination therapy, because her HBV DNA levels had been >3.5 log copies/mL. At the start of combination therapy, amino acid substitutions of the reverse transcriptase (rt gene, rtL180M, rtT184I/M, and rtM204V, were detected. After this, serum HBV DNA decreased to less than 2.1 log copies/mL and remained at this level until 31 months of combination therapy, when it again began to increase. Amino acid substitutions of rtL180M, rtS202G, and rtM204V emerged and were associated with an increase in serum HBV DNA at virologic breakthrough. Long-term therapy with TDF against the ETV-resistant virus has the potential to induce virologic breakthrough and resistance, and careful follow-up should be carried out. Keywords: hepatitis B virus, resistant

  4. The History, present state, and future prospects of the Asian College of Psychosomatic Medicine (ACPM).

    Science.gov (United States)

    Ishizu, Hiroshi

    2012-01-19

    The Asian College of Psychosomatic Medicine (ACPM) was founded as the Asian Chapter of the International College of Psychosomatic Medicine (ICPM-AC) in Tokyo on April 12, 1982.The first president was Hitoshi ISHIKAWA (Japan), the vice-presidents were Mahalingam MAHADEVAN (Malaysia) and Burton G.BURTON-BRADLEY (Papua- New Guinea), and the general secretary was Sueharu TSUTSUI (Japan).Five years previously, preparation for creation of the ICPM-AC was started at the 4th World Congress of the International College of Psychosomatic Medicine (ICPM) held in Kyoto, Japan, September 5-9, 1977.The First Congress of the ICPM-AC was held by the President Yujiro IKEMI in Tokyo on May 19-20, 1984. The main members in the early stage were Y. IKEMI, H. ISHIKAWA, S. TSUTSUI, Taisaku KATSURA, Tetsuya NAKAGAWA. Hiroyuki SUEMATSU and others from Japan and Hsien RIN (Taiwan), Seock Young KANG (Korea), M. MAHADEVAN. B.G. BURTON-BRADLEY and others from other Asian countries.Thereafter, academic congresses of the ICPM-AC, the 2nd to the 9th, were held approximately every two years, in Japan, India, Malaysia, Taiwan, Korea, and China. The name was changed to the Asian College of Psychosomatic Medicine (ACPM), and the 10th to 14th congresses were held in Taiwan, Okinawa (Japan), Australia, Korea, and China.The current president of the Executive Board of ACPM is Chiharu KUBO, the Director of Kyushu University Hospital.The next academic congress is the 15th ACPM and will be hosted by Tserenkhuugyin LKHAGVASUREN in Ulaanbaatar, Mongolia from August 24-26, 2012.Participating countries have expanded to include Asian-Oceanic countries such as Mongolia, Micronesia, Australia and Sri Lanka.The main themes of the congresses have focused on psychosomatic disorders, culture - bound syndromes, oriental medicine, etc... To date,"Health promotion"by raising the level of mental health based on psychoneuroendocrinoimmunomodulation has been very important. Prevention is also important in the Asia - Oceana

  5. SHARAD Constrains on Lava Flow Properties at Southeastern Utopia Planitia

    Science.gov (United States)

    Nunes, D. C.

    2012-12-01

    The volcanic flows originated at the southwestern flanks of Elysium Mons extend over 1,000 km into Utopia Planitia and overlie the knobby and polygonally cracked Vastitas Borealis Formation (VBF). These flows display rough and smooth lobate morphologies (RL and SL) morphologies and occur in conjunction with sinuous channels (SC). Russell and Head [2003] described these morphologies and hypothesized that RL correspond to debris flows that arose as lahars from the interaction between magma and ground water or ice. The mapping of Tanaka et al. [2003] identified these features similarly, attributing them to volcanoclastic flows formed from magma-volatile interactions. Crater counts by Werner et al. [2011] support surface ages between 1 and 2 Gyr for these flows. Analysis of the radargrams acquired throughout this area o show unambiguous subsurface reflectors that, individually, are relatively short and laterally intermittent. As a group, however, these reflectors are distributed sparsely over the flow field and correlate very well with the SL units. Delays to reflectors beneath the surface are generally in the order of < ~1 μs. In one locale with a high concentration of subsurface reflectors, centered at 117.61°E and 31.31°N, a sequence of smooth lobate flows overlie a smooth volcanic unit. The lobate flow in immediate contact with the smooth unit possesses subsurface reflections that correlate well with the flow edges, and where this flow is overlain by another lobate flow these reflections vanish. We interpret these reflections as a reflector that corresponds to the interface between the lobate flow and smooth unit. The average delay to this reflector is 0.68 - 0.71 μs along its length. The thickness of this lobate flow, estimated from MOLA elevation data, ranges between 35 and 40 m. The thickness estimate from MOLA and the delay to reflector from SHARAD together constrain the relative permittivity of the flow to between 6.5 and 9.5. These values are consistent

  6. Phylogenetic origin of limes and lemons revealed by cytoplasmic and nuclear markers.

    Science.gov (United States)

    Curk, Franck; Ollitrault, Frédérique; Garcia-Lor, Andres; Luro, François; Navarro, Luis; Ollitrault, Patrick

    2016-04-01

    The origin of limes and lemons has been a source of conflicting taxonomic opinions. Biochemical studies, numerical taxonomy and recent molecular studies suggested that cultivated Citrus species result from interspecific hybridization between four basic taxa (C. reticulata,C. maxima,C. medica and C. micrantha). However, the origin of most lemons and limes remains controversial or unknown. The aim of this study was to perform extended analyses of the diversity, genetic structure and origin of limes and lemons. The study was based on 133 Citrus accessions. It combined maternal phylogeny studies based on mitochondrial and chloroplastic markers, and nuclear structure analysis based on the evaluation of ploidy level and the use of 123 markers, including 73 basic taxa diagnostic single nucleotide polymorphism (SNP) and indel markers. The lime and lemon horticultural group appears to be highly polymorphic, with diploid, triploid and tetraploid varieties, and to result from many independent reticulation events which defined the sub-groups. Maternal phylogeny involves four cytoplasmic types out of the six encountered in the Citrus genus. All lime and lemon accessions were highly heterozygous, with interspecific admixture of two, three and even the four ancestral taxa genomes. Molecular polymorphism between varieties of the same sub-group was very low. Citrus medica contributed to all limes and lemons and was the direct male parent for the main sub-groups in combination with C. micrantha or close papeda species (for C. aurata, C. excelsa, C. macrophylla and C. aurantifolia--'Mexican' lime types of Tanaka's taxa), C. reticulata(for C. limonia, C. karna and C. jambhiri varieties of Tanaka's taxa, including popular citrus rootstocks such as 'Rangpur' lime, 'Volkamer' and 'Rough' lemons), C. aurantium (for C. limetta and C. limon--yellow lemon types--varieties of Tanaka's taxa) or the C. maxima × C. reticulate hybrid (for C. limettioides--'Palestine sweet' lime types--and C

  7. Geologic map of the Galaxias quadrangle (MTM 35217) of Mars

    Science.gov (United States)

    De Hon, Rene A.; Mouginis-Mark, Peter J.; Brick, Eugene E.

    1999-01-01

    The Galaxias region (MTM 35217) is one of a series of 1:500,000-scale science study areas on Mars sponsored by NASA's Planetary Geology and Geophysics Program. Situated near the northern limit of lava flows associated with Elysium Mons, this region includes a mixture of volcanic and nonvolcanic terrains. The region is also of interest for the fluvial systems that originate along the distal margins of the Elysium lava flows. Resolution of Viking Orbiter images used to prepare the base map ranges from 40 to 160 m/pixel. High-resolution frames (40 to 80 m/pixel) are found in the southeastern part of the map area and along the north edge of the quadrangle, but over half the quadrangle is included in medium-resolution frames (150 m/pixel). Two 8 m/pixel, very high resolution scenes are available (see fig. 1). Interpretation is complicated by variable resolution and sun angles that vary from east to west illumination on different images. Mapping methods and principles are adapted from those developed for lunar photogeologic mapping by Shoemaker and Hackman (1962), refined by Wilhelms (1972), and successfully applied by many workers to a variety of planetary surfaces. Mapping units are distinguished by topography and texture and are ranked by relative age on the basis of superposition and transection relations. Material units are assigned to time-stratigraphic systems defined by Scott and Carr (1978) and Tanaka (1986). This area is included within earlier maps that used Mariner 9 images at 1:5,000,000 scale (Elston, 1979) and globally at 1:25,000,000 scale (Scott and Carr, 1978). Regional maps based on the much higher resolutions of Viking Orbiter allowed more detailed discrimination of materials by Greeley and Guest (1987) at 1:15,000,000 scale and Tanaka and others (1992) at 1:5,000,000 scale. Some map units on this 1:500,000-scale map correspond to, or are partially equivalent to, units on the larger scale maps of Greeley and Guest (1987) and Tanaka and others (1992

  8. Spot urine sodium measurements do not accurately estimate dietary sodium intake in chronic kidney disease12

    Science.gov (United States)

    Dougher, Carly E; Rifkin, Dena E; Anderson, Cheryl AM; Smits, Gerard; Persky, Martha S; Block, Geoffrey A; Ix, Joachim H

    2016-01-01

    Background: Sodium intake influences blood pressure and proteinuria, yet the impact on long-term outcomes is uncertain in chronic kidney disease (CKD). Accurate assessment is essential for clinical and public policy recommendations, but few large-scale studies use 24-h urine collections. Recent studies that used spot urine sodium and associated estimating equations suggest that they may provide a suitable alternative, but their accuracy in patients with CKD is unknown. Objective: We compared the accuracy of 4 equations [the Nerbass, INTERSALT (International Cooperative Study on Salt, Other Factors, and Blood Pressure), Tanaka, and Kawasaki equations] that use spot urine sodium to estimate 24-h sodium excretion in patients with moderate to advanced CKD. Design: We evaluated the accuracy of spot urine sodium to predict mean 24-h urine sodium excretion over 9 mo in 129 participants with stage 3–4 CKD. Spot morning urine sodium was used in 4 estimating equations. Bias, precision, and accuracy were assessed and compared across each equation. Results: The mean age of the participants was 67 y, 52% were female, and the mean estimated glomerular filtration rate was 31 ± 9 mL · min–1 · 1.73 m–2. The mean ± SD number of 24-h urine collections was 3.5 ± 0.8/participant, and the mean 24-h sodium excretion was 168.2 ± 67.5 mmol/d. Although the Tanaka equation demonstrated the least bias (mean: −8.2 mmol/d), all 4 equations had poor precision and accuracy. The INTERSALT equation demonstrated the highest accuracy but derived an estimate only within 30% of mean measured sodium excretion in only 57% of observations. Bland-Altman plots revealed systematic bias with the Nerbass, INTERSALT, and Tanaka equations, underestimating sodium excretion when intake was high. Conclusion: These findings do not support the use of spot urine specimens to estimate dietary sodium intake in patients with CKD and research studies enriched with patients with CKD. The parent data for this

  9. On the origin of delta spots

    International Nuclear Information System (INIS)

    Tang, F.

    1983-01-01

    Mount Wilson sunspot drawings from 1966 through 1980 were used in conjunction with Hα filtergrams from Big Bear Solar Observatory to examine the origin of delta spots, spots with bipolar umbrae within one penumbra. Of the six cases we studied, five were formed by the union of non-paired spots. They are either shoved into one another by two neighboring growing bipoles or by a new spot born piggy-back style on an existing spot of opposite polarity. Proper motions of the growing spots take on curvilinear paths around one another to avoid a collision. This is the shear motion observed in delta spots (Tanaka, 1979). In the remaining case, the delta spot was formed by spots that emerged as a pair. Our findings indicate no intrinsic differences in the formation or the behavior between delta spots of normal magnetic configuration. (orig.)

  10. Achieving world's highest level of nuclear safety learning from overseas nuclear trouble events

    International Nuclear Information System (INIS)

    Okumoto, Masaru

    2014-01-01

    Nuclear Information Research Project of Institute of Nuclear Safety System, Incorporated (INSS) had acquired trouble information of nuclear power plants (NPPs) up to annual several thousand events issued by overseas regulatory agencies for more than 20 years since INSS established and analyzed it in details respectively after the screening. Lessons extracted from the analysis were offered as suggestions to electric utilities having PWRs in Japan. Such activities would surely contribute to maintain and improve nuclear safety with no objection. However, they could not prevent the occurrence of accident of Fukushima Daiichi NPPs. Thus the project had reviewed usefulness of past activities and how improved could be by listening sincerely to outside opinions. This report introduced outlines of recent activities. Competent suggestions to electric utilities might be made with improved reflection of lessons to needed rules, deepened information sharing within the project and raised awareness of the problem. (T. Tanaka)

  11. Outline of Fukushima nuclear accident and future action. Lessons learned from accident and countermeasure plan

    International Nuclear Information System (INIS)

    Fukuda, Toshihiko

    2012-01-01

    Fukushima nuclear accident was caused by loss of all AC power sources (SBO) and loss of ultimate heat sink (LUHS) at Fukushima Daiichi Nuclear Power Plants (NPPs) hit by the Great East Japan Earthquake. This article reviewed outline of Fukushima nuclear accident progression when on year had passed since and referred to lessons learned from accident and countermeasure plan to prevent severe accident in SBO and LUHS events by earthquake and tsunami as future action. This countermeasure would be taken to (1) prevent serious flooding in case a tsunami overwhelms the breakwater, with improving water tightness of rooms for emergency diesel generator, batteries and power centers, (2) enhance emergency power supply and cooling function with mobile electricity generator, high pressure fire pump car and alternate water supply source, (3) mitigate environmental effects caused by core damage with installing containment filtered venting, and (4) enforce emergency preparedness in case of severe accident. Definite countermeasure plan for Kashiwazaki-Kariwa NPPs was enumerated. (T. Tanaka)

  12. Prevent recurrence of nuclear disaster (4). Future tasks in the field of structure and components

    International Nuclear Information System (INIS)

    Okamoto, Koji; Takagi, Toshiyuki; Ueda, Susumu

    2012-01-01

    Structure and components subcommittee under the special committee of seismic safety of nuclear power stations of the Atomic Energy Society of Japan discussed future activities related with technical problems of seismic design of structures, components and piping system and evaluation of seismic effects in collaboration with the Japan Society of Mechanical Engineers. These problems were arranged by 'logic of seismic safety' and tabulated just enough, and then their roadmap was prepared. This article described selected relevant problems and discussed safety margins of seismic design and their related problems, referring to state of countermeasures and evaluated results of nuclear power stations after Great East Japan Earthquake occurred in March 11, 2011. Main problems were related with seismic safety margins of structure and components, consideration of ground motion index, rationalization and upgrade of seismic design, application of new technology, integrity evaluation of structure and components after or at earthquake, and upgrade of seismic probabilistic risk assessment methodology. (T. Tanaka)

  13. Micromechanical analysis on anisotropy of structured magneto-rheological elastomer

    International Nuclear Information System (INIS)

    Li, R; Zhang, Z; Wang, X J; Chen, S W

    2015-01-01

    This paper investigates the equivalent elastic modulus of structured magneto-rheological elastomer (MRE) in the absence of magnetic field. We assume that both matrix and ferromagnetic particles are linear elastic materials, and ferromagnetic particles are embedded in matrix with layer-like structure. The structured composite could be divided into matrix layer and reinforced layer, in which the reinforced layer is composed of matrix and the homogenously distributed ferromagnetic particles in matrix. The equivalent elastic modulus of reinforced layer is analysed by the Mori-Tanaka method. Finite Element Method (FEM) is also carried out to illustrate the relationship between the elastic modulus and the volume fraction of ferromagnetic particles. The results show that the anisotropy of elastic modulus becomes noticeable, as the volume fraction of particles increases. (paper)

  14. Differential elastic electron scattering cross sections for CCl4 by 1.5-100 eV energy electron impact

    Science.gov (United States)

    Limão-Vieira, P.; Horie, M.; Kato, H.; Hoshino, M.; Blanco, F.; García, G.; Buckman, S. J.; Tanaka, H.

    2011-12-01

    We report absolute elastic differential, integral and momentum transfer cross sections for electron interactions with CCl4. The incident electron energy range is 1.5-100 eV, and the scattered electron angular range for the differential measurements varies from 15°-130°. The absolute scale of the differential cross section was set using the relative flow technique with helium as the reference species. Comparison with previous total cross sections shows good agreement. Atomic-like behaviour in this scattering system is shown here for the first time, and is further investigated by comparing the CCl4 elastic cross sections to recent results on the halomethanes and atomic chlorine at higher impact energies [H. Kato, T. Asahina, H. Masui, M. Hoshino, H. Tanaka, H. Cho, O. Ingólfsson, F. Blanco, G. Garcia, S. J. Buckman, and M. J. Brunger, J. Chem. Phys. 132, 074309 (2010)], 10.1063/1.3319761.

  15. Evaluation of three rootstocks root system for acid lime ‘tahiti’ at Piauí state/ Sistema radicular de três porta-enxertos para lima ácida ‘tahiti’ no estado do Piauí

    Directory of Open Access Journals (Sweden)

    Adeodato Ari Cavalcante Salviano

    2007-10-01

    Full Text Available The objective of this work was to evaluate the development of the root system of three rootstocks for ‘Tahiti’acid lime [Citrus latifolia (Yu.Tanaka Tanaka]: Rangpur lime (C. limonia Osbeck; Swingle citrumelo [Poncirus trifoliata (L. Raf. x C. paradisi Macf.]; Flying Dragon trifoliate (P. trifoliata (L. Raf.var. (FD – in the soil and environment conditions of the county of José de Freitas, Piauí, located on 04º 52' latitude S and 42º 42' longitude W and 110 m of altitude, in Aw climate. It was used the trench method. A wooden frame divided into 0.1 x 0.2 m parts was fixed in the soil profile and a digital photograph was taken from each part. These photographs were analyzed by software SIARCS 3.0 for sizing of the root system and the data gotten, submitted to the analysis of variance with Tukey test at the level of 5% of probability. The experimental design was entirely randomized, with three treatments (rootstocks and four replications (trenches. The root systems of the rootstocks had 90% of concentration until the depth of 0,4 m, and it was observed that 60% of the roots were concentrated in the first 0,2 m. The root system of the Rangpur lime demonstrated to be superior, in lenght (cm.200 cm-² to the Flying Dragon trifoliate and Swingle citrumelo root systems.O objetivo deste trabalho foi avaliar o desenvolvimento radicular de três porta-enxertos para lima ácida ‘Tahiti’ [Citrus latifolia (Yu.Tanaka Tanaka]: limão Cravo (C. limonia Osbeck; citrumelo Swingle [Poncirus trifoliata (L. Raf. x C. paradisi Macf.]; trifoliata Flying Dragon (P. trifoliata (L. Raf.var. (FD, no município de José de Freitas, Piauí, localizado a 04º 52’ latitude S e 42º 42’ longitude W, e altitude de 110m, onde predomina clima Aw. Foram abertas trincheiras com quatro repetições, para colocação de quadro-gabarito de madeira, com divisórias de 0,1 m na profundidade por 0,2 m na largura, perfazendo cinco camadas na profundidade e seis posi

  16. Isoflavonoids in the Rutaceae family: 1. Fortunella obovata, Murraya paniculata and four Citrus species.

    Science.gov (United States)

    Lapcík, Oldrich; Klejdus, Borivoj; Davidová, Michaela; Kokoska, Ladislav; Kubán, Vlastimil; Moravcová, Jitka

    2004-01-01

    Several types of compounds with immunoreactivity similar to isoflavonoids were detected in water: ethanol extracts of leaves of Fortunella obovata Hort. ex Tanaka, Murraya paniculata Jack. and four Citrus species, namely C. aurantium L, C. grandis Osbeck, C. limonia Osbeck., and C. sinensis Osbeck (Rutaceae). The chromatographic mobilities of the immunoreactive substances were compared with those of authentic standards, revealing a spectrum of isoflavonoid metabolites in all plants studied. Aglycones as well as glycosides were recognized, namely daidzin, genistin, daidzein, genistein, formononetin, biochanin A, prunetin, and several incompletely characterized isoflavonoids. A subsequent HPLC-MS study verified the identities of the main immunoreactive isoflavonoids and established the identities of several others, viz. glycitein, glycitin, ononin and sissotrin, including the malonylated and acetylated isoflavonoid glucosides. The estimated content of the individual immunoreactive entities ranged from a few microg to about 2 mg/kg (dry weight). It is concluded that the isoflavonoid metabolic pathway is present throughout the Rutaceae family.

  17. Produtividade e qualidade dos frutos da laranjeira 'Pêra' clone IAC em 16 porta-enxertos na região de Bebedouro-SP Yield and fruit quality of 'Pêra' sweet orange clone IAC on 16 rootstocks in Bebedouro region, State of São Paulo, Brazil

    Directory of Open Access Journals (Sweden)

    Eduardo Sanches Stuchi

    2004-08-01

    Full Text Available Avaliou-se a influência de 16 porta-enxertos na produtividade, nas características físicas e químicas (sólidos solúveis totais-°Brix; acidez; ratio; porcentagem de suco; índice tecnológico e tamanho dos frutos dos frutos da laranjeira 'Pêra' [Citrus sinensis (L. Osbeck] e na incidência e severidade da clorose variegada dos citros (CVC. O plantio do experimento foi realizado em julho de 1993, com espaçamento de 6,0 m entre linhas e 3,5 m entre plantas (476 plantas/ha. O experimento foi conduzido sem irrigação. O delineamento experimental foi em blocos ao acaso, duas plantas por parcela, três repetições e 16 tratamentos, constituídos pelas seguintes cultivares porta-enxertos: tangerineira 'Sun Chu Sha Kat' (Citrus reticulata Blanco, tangerineira 'Pectinífera' (C. reticulata, 'Shekwasha' (C. depressa Hayata, tangerineira 'Pectinífera/Shekwasha' (C. depressa Hayata, tangerineira 'Batangas' (C. reticulata, tangerineira 'Oneco' (C. reticulata, citrangor [citrange (Poncirus trifoliata Raf. x C. sinensis x C. sinensis], citrandarin [C.sunki hort. Ex Tanaka x Poncirus trifoliata (L. Raf. cv. English, tangerineira 'Sunki' (C. sunki, tangerineira 'Suen-Kat' (C. sunki, tangerineira 'Nasnaran' (C. amblycarpa Ochse, tangerineira 'Venezuela' (C. reticulata, tangerineira Heen Naran (C. lycopersicaeformis hort. ex Tan. , limoeiro 'Cravo' (C. limonia Osbeck x tangerineira 'Cleópatra' (C. reshni hort ex Tanaka, limoeiro 'Cravo' (C. limonia, tangerineira 'Cleópatra' (C. reshni. A intensidade da clorose variegada dos citros variou em função dos porta-enxertos e não se relacionou com a produção de frutos até a quarta safra. Os porta-enxertos estudados, com exceção da tangerineira Nasnaran, proporcionaram qualidade e produções iniciais de frutos similares aos do limoeiro 'Cravo'.An experiment was set up in July 1993, at Bebedouro city, São Paulo state, Brazil, aiming to evaluate the rootstock influence on the yield and several physical

  18. Special feature article-very urgent nuclear energy personnel training

    International Nuclear Information System (INIS)

    Saito, Shinzo; Tsujikura, Yonezo; Kawahara, Akira

    2007-01-01

    Securing human resources is important for the sustainable development of research, development and utilization of nuclear energy. However, concerns have been raised over the maintenance of human resources due to the decline of public and private investment in research and development of nuclear energy in recent years. To that end, it is essential for the workplace in the field of nuclear energy to be engaging. This special feature article introduced the Government's fund program supporting universities and vocational colleges to develop human resources in the area of nuclear energy. Electric utilities, nuclear industries, nuclear safety regulators and related academia presented respective present status and issues of nuclear energy personnel training with some expectations to the program to secure human resources with professional qualifications. (T. Tanaka)

  19. Two-Basket Approach and Emission Metrics

    Science.gov (United States)

    Tanaka, K.; Schmale, J.; von Schneidemesser, E.

    2013-12-01

    Cutting the emissions of Short-Lived Climate-Forcing Air Pollutants (SLCPs) gains increasing global attention as a mitigation policy option because of direct benefits for climate and co-benefits such as improvements in air quality. Including SLCPs as target components to abate within a single basket (e.g. the Kyoto Protocol) would, however, face issues with regard to: i) additional assumptions that are required to compare SLCP emissions and CO2 emissions within a basket in terms of climatic effects, especially because of the difference in lifetimes, ii) the accountability of non-climatic effects in the emission trading between SLCPs and CO2. The idea of a two-basket approach was originally proposed as a climatic analogue to the Montreal Protocol dealing with ozone depleting substances (Jackson 2009; Daniel et al. 2012; Smith et al. 2013). In a two-basket approach, emissions are allowed to be traded within a basket but not across the baskets. While this approach potentially ensures scientifically supported emission trading (e.g. (Smith et al. 2013)), this approach leaves open the important issue of how to determine the relative weight between two baskets. Determining the weight cannot be answered by science alone, as the question involves a value judgment as stressed in metric studies (e.g. (Tanaka et al. 2010; Tanaka et al. 2013)). We discuss emission metrics in the context of a two-basket approach and present policy implications of such an approach. In a two-basket approach, the weight between two baskets needs to be determined a priori or exogenously. Here, an opportunity arises to present synergetic policy options targeted at mitigating climate change and air pollution simultaneously. In other words, this could be a strategy to encourage policymakers to consider cross-cutting issues. Under a two-basket climate policy, policymakers would be exposed to questions such as: - What type of damages caused by climate change does one choose to avoid? - To what extent

  20. Long fiber polymer composite property calculation in injection molding simulation

    Science.gov (United States)

    Jin, Xiaoshi; Wang, Jin; Han, Sejin

    2013-05-01

    Long fiber filled polymer composite materials have attracted a great attention and usage in recent years. However, the injection and compression molded long fiber composite materials possess complex microstructures that include spatial variations in fiber orientation and length. This paper presents the recent implemented anisotropic rotary diffusion - reduced strain closure (ARD-RSC) model for predicting fiber orientation distribution[1] and a newly developed fiber breakage model[2] for predicting fiber length distribution in injection and compression molding simulation, and Eshelby-Mori-Tanaka model[3,4] with fiber-matrix de-bonding model[5] have been implemented to calculate the long fiber composite property distribution with predicted fiber orientation and fiber length distributions. A validation study on fiber orientation, fiber breakage and mechanical property distributions are given with injection molding process simulation.

  1. From Process Modeling to Elastic Property Prediction for Long-Fiber Injection-Molded Thermoplastics

    International Nuclear Information System (INIS)

    Nguyen, Ba Nghiep; Kunc, Vlastimil; Frame, Barbara J.; Phelps, Jay; Tucker III, Charles L.; Bapanapalli, Satish K.; Holbery, James D.; Smith, Mark T.

    2007-01-01

    This paper presents an experimental-modeling approach to predict the elastic properties of long-fiber injection-molded thermoplastics (LFTs). The approach accounts for fiber length and orientation distributions in LFTs. LFT samples were injection-molded for the study, and fiber length and orientation distributions were measured at different locations for use in the computation of the composite properties. The current fiber orientation model was assessed to determine its capability to predict fiber orientation in LFTs. Predicted fiber orientations for the studied LFT samples were also used in the calculation of the elastic properties of these samples, and the predicted overall moduli were then compared with the experimental results. The elastic property prediction was based on the Eshelby-Mori-Tanaka method combined with the orientation averaging technique. The predictions reasonably agree with the experimental LFT data

  2. Dismantlement of waste disposal site in the Musashi Reactor Facility

    International Nuclear Information System (INIS)

    Uchiyama, Takafumi; Morishima, Kayoko; Tanzawa, Tomio; Mitsuhashi, Ishi; Matsumoto, Tetsuo

    2012-01-01

    The decommissioning of the Musashi reactor was decided in 2003. Liquid waste management facility and solid waste management facility at the waste disposal site had been dismantled and removed. After separating nonradioactive wastes from radioactive wastes with confirmation test of no detectable radioactivity, the system of incinerator, electrical components, feedwater and stock solution processing system, and waste treatment facility were dismantled as nonradioactive wastes from 2011 to 2012. Separating waterproof painting and additional shaving of stock solution storage tanks and scraping of concrete floor surfaces were conducted to separate radioactive wastes. Solid waste storage warehouse was also dismantled in 2012. Radioactive wastes packed in containers were moved and stored in the reactor facility. (T. Tanaka)

  3. Utilization of OR method toward realization of better fast breeder reactor cycle

    International Nuclear Information System (INIS)

    Shiotani, Hiroki

    2008-01-01

    Fast Reactor Cycle Technology Development (FaCT) Project was now started aiming at commercialization of new nuclear power plants system. In parallel with development of component technology and technology demonstration by test, development of comprehensive evaluation method of the FBR cycle system is under way and scenario study, discounted cash flow (DCF) method, analytic hierarchy process (AHP), real option, supply chain management (SCM) and others are used. Since commercialized FBR cycle would request long-term and large-scale development contributed by so many participants, modeling of nuclear system and knowledge management are beneficial even for development of evaluation method and further utilization of OR technology is highly expected. Comprehensive evaluation methods now utilized or developing were overlooked from the standpoint of OR, 'Science of Better'. (T. Tanaka)

  4. Three-dimensional stress and free vibration analyses of functionally graded plates with circular holes by the use of the graded finite element method

    Science.gov (United States)

    Asemi, K.; Ashrafi, H.; Shariyat, M.

    2016-07-01

    Static and free vibration analyses of plates with circular holes are performed based on the three-dimensional theory of elasticity. The plates are made of a functionally graded material (FGM), and the volume fractions of the constituent materials vary continuously across the plate. The effective properties of the FGM plate are estimated by using the Mori-Tanaka homogenization method. A graded finite element method based on the Rayleigh-Ritz energy formulation is used to solve the problem. Effects of different volume fractions of the materials and hole sizes on the behavior of FGM plates under uniaxial tension are investigated. Natural frequencies of a fully clamped FGM plate with a circular cutout are derived. The results obtained are compared with available experimental data.

  5. Present state of nuclear regulation organizations of main countries in the world. Importance of regulation staffs and requirements

    International Nuclear Information System (INIS)

    Nishida, Naoki

    2013-01-01

    After Fukushima accident, NRA (Nuclear Regulation Authority) was established in Japan as an independent organization from promotion. In order to perform effective and reliable nuclear regulation, it was important management organization such as nuclear regulation commission worked efficiently, and also requirements for nuclear regulation staffs engaged in actual regulatory works were of importance so as for appropriate decision making or judgments of management organization. Since regulation staffs needed professional expertise and technical judgment capabilities in wide areas including other than nuclear energy, various efforts had been done to get able regulation staffs in US, France and UK nuclear regulation organizations concerned, which became clarified after overseas investigation for this article. Since knowledge in nuclear industry could be used for effective regulation, mid-career recruitment had been employed in regulation organization of each country so as to take such knowledge and so it was important how to utilize industrial knowledge under appropriate conditions compatible with independence of regulation organization. (T. Tanaka)

  6. Detectors for proton counting. Si-APD and scintillation detectors

    International Nuclear Information System (INIS)

    Kishimoto, Shunji

    2008-01-01

    Increased intensity of synchrotron radiation requests users to prepare photon pulse detectors having higher counting rates. As detectors for photon counting, silicon-avalanche photodiode (Si-APD) and scintillation detectors were chosen for the fifth series of detectors. Principle of photon detection by pulse and need of amplification function of the detector were described. Structure and working principle, high counting rate measurement system, bunch of electrons vs. counting rate, application example of NMR time spectroscopy measurement and comments for users were described for the Si-APD detector. Structure of scintillator and photomultiplier tube, characteristics of scintillator and performance of detector were shown for the NaI detector. Future development of photon pulse detectors was discussed. (T. Tanaka)

  7. Feature article. Current state and problems of modeling and simulation technologies in the area of light water reactor

    International Nuclear Information System (INIS)

    Koshizuka, Seiichi; Okamoto, Koji; Tanaka, Shunichi; Morii, Tadashi; Nakamura, Takashi; Yamamoto, Akio; Okajima, Narimitsu

    2011-01-01

    This special feature article consisted of seven reports summarizing discussions at the workshop on 'modeling and simulation technologies' held in early March 2011. These technologies were one of the most important strategic technologies among nuclear basic researches. Simulation technologies and Verification and Validation (V and V), problems of US software used in Japan and light water reactor simulation technology in regulating agency were overviewed. Experts in the area of thermo hydraulics and safety analysis, particle transport analysis and reactor physics and core analysis detailed current state and problems of simulation technologies. Standardization of V and V, development of original computer code and establishment of experimental database with assured accuracy for V and V should be conducted in Japan. (T. Tanaka)

  8. World nuclear power generation market and prospects of industry reorganization

    International Nuclear Information System (INIS)

    Murakami, Tomoko

    2007-01-01

    In late years there are many trends placing nuclear energy with important energy in various countries in the world due to a remarkable rise to an energy price, importance of energy security and a surge of recognition to a global environment problem. Overseas nuclear industry's acquisition by a Japanese nuclear power plant maker and its capital or business tie-up with an overseas company, were announced in succession in 2006. A nuclear power plant maker has played an extremely important role supporting wide technology in all stages of a design, construction, operation and maintenance in a nuclear power generation business. After having surveyed the recent trend of world nuclear power generation situation, a background and the summary of these acquisition/tie-ups made were investigated and analyzed to consider the influence that movement of such an industry gives a world nuclear power generation market. (T. Tanaka)

  9. An Experimental Study of the Beam-Steering Effect on the FEL Gain at LEUTL's Segmented Undulators

    CERN Document Server

    Chae, Yong Chul; Lewellen, John W; Lumpkin, Alex H; Milton, Stephen

    2004-01-01

    The electron trajectories at the LEUTL, a SASE FEL facility at Argonne, were routinely corrected during the user run in order to deliver maximum radiation power to the user. Even though we knew from experience that SASE gain at the segmented undulators was dependent on the trajectory, the quantitative understanding of steering effects associated with the specific trajectory was lacking. Recently Tanaka et al. proposed an analytical model for the single-kick error (SKE) effect. Since LEUTL has eight segmented undulators, we performed the first measurement of SKE on the FEL gain. In the experiments we varied the corrector strength up to the critical angle, and the gain over the undulator was measured for each corrector setting. The results were compared with the analytical model and GENESIS simulations. We also measured the e-beam positions and SASE intensities over the undulators. The experimental data were analyzed and their results were reproduced by GENESIS simulation. The simulation condition, including th...

  10. Bedrock geologic and structural map through the western Candor Colles region of Mars

    Science.gov (United States)

    Okubo, Chris H.

    2014-01-01

    The Candor Colles are a population of low, conical hills along the southeast flank of Ceti Mensa, in west Candor Chasma, within the Valles Marineris system of Mars (fig. 1). Ceti Mensa and the adjacent Candor Mensa are mounds of layered sedimentary deposits and are the most prominent landforms within west Candor Chasma. Prior to the arrival of the Mars Reconnaissance Orbiter (MRO) in orbit around Mars in 2006 (Zurek and Smrekar, 2007), geologic maps of the area utilized the relatively low resolution Viking Orbiter photomosaics (20–150 m/pixel). Geologic maps covering west Candor Chasma were created at scales of 1:15,000,000 for the western equatorial region of Mars (Scott and Tanaka, 1986), 1:2,000,000 for the Valles Marineris region (Witbeck and others, 1991), and 1:500,000 for the far eastern part of west Candor Chasma (Mars Transverse Mercator quadrangle–05072; Lucchitta, 1999). 

  11. Feature article. Fukushima Daiichi NPP accident

    International Nuclear Information System (INIS)

    Ekarinai, Masashi; Ake, Yutaka; Narabayashi, Tadashi

    2011-01-01

    This special feature article consisted of five reports and the minutes of emergency discussion meeting on Fukushima Daiichi Nuclear Power Plant (NPP) accident. Effects of the accident on future electricity supply of electric utilities and also on business development of nuclear industries were discussed. Activities of senior network team of atomic energy society of Japan (AESJ) to conduct severe accident analysis and early restoration from the accident were introduced. Circulating injection reactor cooling system and zeolite decontamination system of accumulated contaminated water was proposed. Effects of the accident on overseas reaction on nuclear development were also reported as well as personal experience of the professor in the US west coast on communications. (T. Tanaka)

  12. A digest of the Nuclear Safety Division report on the Fukushima Dai-ichi accident seminar (4). Issues identified by the accident

    International Nuclear Information System (INIS)

    Moriyama, Kumiaki; Abe, Kiyoharu

    2013-01-01

    AESJ Nuclear Safety Division published 'Report on the Fukushima Dai-ichi Accident Seminar - what was wrong and what should been down in future-' which would be published as five special articles of the AESJ journal. The Fukushima Dai-ichi accident identified issues of several activities directly related with nuclear safety in the areas of safety design, severe accident management and safety regulations. PRA, operational experiences and safety research could not always contribute safety assurance of nuclear power plant so much. This article (4) summarized technical issues based on related facts of the accident as much as possible and discussed' what was wrong and what should be down in future'. Important issues were identified from defense-in-depth philosophy and lessons learned on safety design were obtained from accident progression analysis. Activities against external events and continuous improvements of safety standards based on latest knowledge were most indispensable. Strong cooperation among experts in different areas was also needed. (T. Tanaka)

  13. Research and development of grid computing technology in center for computational science and e-systems of Japan Atomic Energy Agency

    International Nuclear Information System (INIS)

    Suzuki, Yoshio

    2007-01-01

    Center for Computational Science and E-systems of the Japan Atomic Energy Agency (CCSE/JAEA) has carried out R and D of grid computing technology. Since 1995, R and D to realize computational assistance for researchers called Seamless Thinking Aid (STA) and then to share intellectual resources called Information Technology Based Laboratory (ITBL) have been conducted, leading to construct an intelligent infrastructure for the atomic energy research called Atomic Energy Grid InfraStructure (AEGIS) under the Japanese national project 'Development and Applications of Advanced High-Performance Supercomputer'. It aims to enable synchronization of three themes: 1) Computer-Aided Research and Development (CARD) to realize and environment for STA, 2) Computer-Aided Engineering (CAEN) to establish Multi Experimental Tools (MEXT), and 3) Computer Aided Science (CASC) to promote the Atomic Energy Research and Investigation (AERI). This article reviewed achievements in R and D of grid computing technology so far obtained. (T. Tanaka)

  14. Does nuclear energy save global environment?

    International Nuclear Information System (INIS)

    Matsui, Kazuaki

    2006-01-01

    Since the ecological footprint analysis in 1970s suggested changing consumption patterns and overpopulation concerns, energy policy such as energy conservation and use of renewable energy has become of prime importance. Several results of the long-term energy demand and supply analysis in 2050 or 2100 to reduce drastically carbon dioxide emission as a measure against global warming, showed the necessity of nuclear power deployment as well as maximum efforts to save energy, exploitation of the separation and disposal of carbon dioxide, and shifting energy sources to fuels that emit less greenhouse gases or non-fossil fuels. As a promising means to contribute to long-term energy supply, nuclear power generation is expected with improving safety, economic efficiency, environmental adaptability, and nuclear proliferation resistance of the technologies. (T.Tanaka)

  15. Theoretical study of metal-insulator transition in rhombohedral vanadium sesquioxide

    Science.gov (United States)

    Liu, Guang-Hua; Deng, Xiao-Yan; Wang, Chun-Hai

    2011-09-01

    The electronic structure and the metal-insulator transition (MIT) of V2O3 are investigated in the framework of density functional theory and GGA+U. It is found that, both the insulating and metallic phases can be realized in rhombohedral structure by varying the on-site Coulomb interaction, and the MIT in V2O3 can take place without any structure phase transition. Our calculated energy gap (0.63 eV) agrees with experimental result very well. The metallic phase exhibits high spin (S=1) character, but it becomes S=1/2 in insulating phase. According to our analysis, the Mott-Hubbard and the charge-transfer induce the MIT together, and it supports the mechanism postulated by Tanaka (2002) [11].

  16. Entanglement properties of the two-dimensional SU(3) Affleck-Kennedy-Lieb-Tasaki state

    Science.gov (United States)

    Gauthé, Olivier; Poilblanc, Didier

    2017-09-01

    Two-dimensional (spin-2) Affleck-Kennedy-Lieb-Tasaki (AKLT) type valence bond solids on a square lattice are known to be symmetry-protected topological (SPT) gapped spin liquids [S. Takayoshi, P. Pujol, and A. Tanaka Phys. Rev. B 94, 235159 (2016), 10.1103/PhysRevB.94.235159]. Using the projected entangled pair state framework, we extend the construction of the AKLT state to the case of SU(3 ) , relevant for cold atom systems. The entanglement spectrum is shown to be described by an alternating SU(3 ) chain of "quarks" and "antiquarks", subject to exponentially decaying (with distance) Heisenberg interactions, in close similarity with its SU(2 ) analog. We discuss the SPT feature of the state.

  17. Establishment of fire protection code in Nuclear Power Station (JEAC 4626-2010) and revision of fire protection guide in Nuclear Power Station (JEAG 4607-2010)

    International Nuclear Information System (INIS)

    Narama, Takeshi; Ushijima, Koji; Tanaka, Tsutomu

    2011-01-01

    This article reviewed basic design against fire protection measures in nuclear power plants, need of these measures enhancement by the rule with the Chuetsu-Oki earthquake, and then major point of establishment and revision of private rule (design). Fire protection of nuclear power plants should be provided with well-balanced activities of design and management, where the design means fire prevention, fire detection and extinguishment, and mitigation of fire effects. After the Chuetsu-Oki earthquake, need of private fire brigade and information dissemination was stressed as management of fire protection. When a massive earthquake occurs, the design shall lower the possibilities of fire breakouts at the structures, systems, or components of higher safety importance. However the possibility of a fire occurrence shall be considered in the planning of fire protection. (T. Tanaka)

  18. Possibilities of TWR and long life reactor

    International Nuclear Information System (INIS)

    Sekimoto, Hiroshi; Shimazu, Yoichiro; Handa, Norihiko

    2010-01-01

    Bill Gates identified the need to switch to zero-emission energy and clarified investing in Terra Power developing the TWR (Traveling Wave Reactor) in February 2010. He also visited Toshiba developing small reactor 4S (Super Safe Small and Simple). In Japan design studies of the TWR have been conducted on the CANDLE reactor without refueling and the 4S long life reactor with maintenance free. In this feature article, the state of R and D on the TWR in Japan and IAEA's activities on small reactors without online refueling were reviewed in addition to articles on impacts of Bill Gates' investment in the TWR and state of the TWR development from an interview with John Gilleland of Terra Power. (T. Tanaka)

  19. Activities on safety culture study. Study status in public and private sectors

    International Nuclear Information System (INIS)

    Makino, Maomi; Takano, Kenichi

    2004-01-01

    Around after entering in the 21st century, organizational accidents had occurred in Japan at various industries including nuclear industry, which were caused directly by unsafe action, human error and illegal conduct of personnel but there were problems in safety culture of organization such as slow retreat of safety system stimulated by management, schedule control and procedure management becoming a dead letter, lack of safety education, and workplace climate of schedule priority. This article referred to organizational factors common to many severe accidents and introduced safety culture study in public and private sectors to overcome those factors. Safety Culture Evaluation Support Tool (SCEST) was developed for self-evaluation of safety culture of organization as well as Organizational Reliability model (OR model) for analysis of initiation and propagation process of risk event. Safety diagnosis system and feedback type risk assessment system for promoting safe organizational climate and culture were also developed. (T. Tanaka)

  20. Constitutive modelling and identification of parameters of the plastic strain-induced martensitic transformation in 316L stainless steel at cryogenic temperatures

    CERN Document Server

    Garion, C; Sgobba, Stefano

    2006-01-01

    The present paper is focused on constitutive modelling and identification of parameters of the relevant model of plastic strain- induced martensitic transformation in austenitic stainless steels at low temperatures. The model used to describe the FCCrightward arrow BCC phase transformation in austenitic stainless steels is based on the assumption of linearization of the most intensive part of the transformation curve. The kinetics of phase transformation is described by three parameters: transformation threshold (p/sub xi/), slope (A) and saturation level (xi/sub L/). It is assumed that the phase transformation is driven by the accumulated plastic strain p. In addition, the intensity of plastic deformation is strongly coupled to the phase transformation via the description of mixed kinematic /isotropic linear plastic hardening based on the Mori-Tanaka homogenization. The theory of small strains is applied. Small strain fields, corresponding to phase transformation, are decomposed into the volumic and the shea...

  1. Development of advanced RFID application system for nuclear power plant

    International Nuclear Information System (INIS)

    Onda, Kimiharu; Wakabayashi, Eisuke; Arai, Ryota; Shigemi, Ryosuke; Muro, Keiro; Yuda, Shinya

    2008-01-01

    In late years there comes to be close request for traceability of the information such as production control, construction and maintenance record and work history of nuclear power plants. On the other hand, the Radio-frequency identification (RFID) technology that can specify a product and personnel by an electric wave has raised the functionality and versatility as the base technology that can support ubiquitous information society around the mass production industry. In such a background, this article described the developed system, which applied the RFID to nuclear power plants in the areas of production control of the piping manufacture, the construction management and condition monitoring for maintenance works in order to improve their quality and reliability. (T. Tanaka)

  2. Research on water hammer forces caused by rapid growth of bubbles at severe accidents of water cooled reactors

    International Nuclear Information System (INIS)

    Inasaka, Fujio; Adachi, Masaki; Aya, Izuo

    2004-01-01

    At severe accidents of Water Cooled Reactors a great deal of gas is expected to be produced in a short time within the water of lower part of nuclear pressure vessel and containment vessel caused by hydrogen production with a metal water reaction and steam explosions with direct contact of melting core and water. Water hammer forces caused by rapid growth of bubbles shall work on the wall of containment vessel and affect its integrity. Coherency of water block movement is not clear, whether simultaneous or in the same direction. Water block behavior and water hammer forces caused by rapid growth of bubbles have been tested using a modified scale model and analyzed to obtain experimental correlated equation to estimate water block's rising distance and velocity from water hammer data. Numerical analysis using RELAP5-3D (Reactor Excursion and Leak Analysis Program) has been conducted to evaluate water hammer forces and makes clear its modifications needed. (T. Tanaka)

  3. Decommissioning of reactor facilities (2). Required technology

    International Nuclear Information System (INIS)

    Yanagihara, Satoshi

    2014-01-01

    Decommissioning of reactor facilities was planned to perform progressive dismantling, decontamination and radioactive waste disposal with combination of required technology in a safe and economic way. This article outlined required technology for decommissioning as follows: (1) evaluation of kinds and amounts of residual radioactivity of reactor facilities with calculation and measurement, (2) decontamination technology of metal components and concrete structures so as to reduce worker's exposure and production of radioactive wastes during dismantling, (3) dismantling technology of metal components and concrete structures such as plasma arc cutting, band saw cutting and controlled demolition with mostly remote control operation, (3) radioactive waste disposal for volume reduction and reuse, and (4) project management of decommissioning for safe and rational work to secure reduction of worker's exposure and prevent the spreading of contamination. (T. Tanaka)

  4. Sodium intake and multiple sclerosis activity and progression in BENEFIT

    DEFF Research Database (Denmark)

    Fitzgerald, Kathryn C; Munger, Kassandra L; Hartung, Hans-Peter

    2017-01-01

    OBJECTIVE: To assess whether a high-salt diet, as measured by urinary sodium concentration, is associated with faster conversion from clinically isolated syndrome (CIS) to multiple sclerosis (MS) and MS activity and disability. METHODS: BENEFIT was a randomized clinical trial comparing early versus...... delayed interferon beta-1b treatment in 465 patients with a CIS. Each patient provided a median of 14 (interquartile range = 13-16) spot urine samples throughout the 5-year follow-up. We estimated 24-hour urine sodium excretion level at each time point using the Tanaka equations, and assessed whether...... sodium levels estimated from the cumulative average of the repeated measures were associated with clinical (conversion to MS, Expanded Disability Status Scale [EDSS]) and magnetic resonance imaging (MRI) outcomes. RESULTS: Average 24-hour urine sodium levels were not associated with conversion...

  5. Composition of Mediterranean fruit fly third instar larvae (Diptera: Tephritidae) and diet: Nutrient balance studies on amino acids, minerals and nutrient composition in fresh and spent mass rearing diets

    International Nuclear Information System (INIS)

    Chan, Harvey T. Jr.; Jang, Eric B.; Ako, Harry; Niino-Duponte, Ruth Y.; Carpenter, James R.

    2000-01-01

    Mass production of the Mediterranean fruit fly (Medfly) larvae, Ceratitis capitata Wiedemann, requires a rearing diet (Tanaka et al. 1969 1970) of which the nutrient requirements and digestibility have not been established. Setbacks in rearing productivity from the expected 100% yield to as low as 3% yield may occasionally be directly attributed to insecticide contamination or a variety of possible cause(s) (Kobayashi, 1993). These causes include inadequate nutrition, poor diet formulation, overcrowding of either microorganisms or Drosophila, or to the inherent processes of oxidative or microbial deterioration of nutrients. The purpose of this study was to establish the nutritional status of the Mediterranean fruit fly diet through a material balance study for changes in proximate composition (i.e., moisture, protein, fat, ash, carbohydrates), amino acids, minerals between fresh and spent diets, and in the fruit fly larvae themselves

  6. Evaluation of the basic concepts of approaches for the coexistence of nuclear energy and people/local community

    International Nuclear Information System (INIS)

    Kondo, Shunsuke; Kuroki, Shinichi; Nakagiri, Yuko

    2007-01-01

    In November 2007, the Policy Evaluation Committee compiled the report, which evaluated the basic concepts of approaches to the coexistence of nuclear energy and people/local community, specified in the Framework for Nuclear Energy Policy. The report states that the 'concerned administrative bodies are carrying out measures related to the coexistence of nuclear energy and people/local communities in line with these basic concept' and summarizes fifteen proposals conductive to the betterment and improvement of these measures, which were classified as 1) secure transparency and promotion of mutual understanding with the public, 2) development and enrichment of learning opportunities and public participation, 3) relationship between the government and local governments and 4) coexistence with local residents. The Japan Atomic Energy Commission (JAEC) considers this report to be reasonable. This article presented an overview of this activity. (T. Tanaka)

  7. Refurbish research and test reactors corresponding to global age of nuclear energy

    International Nuclear Information System (INIS)

    Mishima, Kaichiro; Oyama, Yukio; Okamoto, Koji; Yamana, Hajime; Yamaguchi, Akira

    2011-01-01

    This special article featured arguments for refurbishment of research and test reactors corresponding to global age of nuclear energy, based on the report: 'Investigation of research facilities necessary for future joint usage' issued by the special committee of Atomic Energy Society of Japan (AESJ) in September 2010. It consisted of six papers titled as 'Introduction-establishment of AESJ special committee for investigation', 'State of research and test reactors in Japan', 'State of overseas research and test reactors', 'Needs analysis for research and test reactors', 'Proposal of AESJ special committee' and 'Summary and future issues'. In order to develop human resources and promote research and development needed in global age of nuclear energy, research and test reactors would be refurbished as an Asian regional center of excellence. (T. Tanaka)

  8. Study on core design for reduced-moderation water reactors

    Energy Technology Data Exchange (ETDEWEB)

    Okubo, Tsutomu [Japan Atomic Energy Research Inst., Tokai, Ibaraki (Japan). Tokai Research Establishment

    2002-12-01

    The Reduced-Moderation Water Reactor (RMWR) is a water-cooled reactor with the harder neutron spectrum comparing with the LWR, resulting from low neutron moderation due to reduced water volume fraction. Based on the difference from the spectrum from the LWR, the conversion from U-238 to Pu-239 is promoted and the new cores preferable to effective utilization of uranium resource can be possible Design study of the RMWR core started in 1997 and new four core concepts (three BWR cores and one PWR core) are recently evaluated in terms of control rod worths, plutonium multiple recycle, high burnup and void coefficient. Comparative evaluations show needed incorporation of control rod programming and simplified PUREX process as well as development of new fuel cans for high burnup of 100 GW-d/t. Final choice of design specifications will be made at the next step aiming at realization of the RMWR. (T. Tanaka)

  9. Multi-Scale Modeling of the Structural and Vibrational Behavior of Carbon Nanotube Reinforced Polymeric Nanocomposite Plates

    DEFF Research Database (Denmark)

    Doagou Rad, Saeed; Jensen, Jakob Søndergaard; Islam, Aminul

    2017-01-01

    Polymeric nanocomposites reinforced with carbon nanotubes are being considered as alternatives in many industrial applications. However, the mechanical behavior of the industrially produced nanocomposites is yet to be fully understood. In this study, Polyamide 6,6-based nanocomposites reinforced...... with different contents of multi-walled carbon nanotubes (MWCNTs) were manufactured using an injection moulding process. A multi-scale approach was followed to numerically model the mechanical behavior of the nanostructured materials. In order to find the stiffness matrix of the carbon nanotubes, different...... loading scenarios were conducted on the tubes using molecular dynamics simulations (LAMMPS). The derived properties of the carbon nanotubes from the atomistic simulations were included in a Benveniste Mori-Tanaka based micromechanical model allowing us to acquire the elastic mechanical properties...

  10. Report on probabilistic safety assessment (PSA) quality assurance in utilization of risk information

    International Nuclear Information System (INIS)

    2006-12-01

    Recently in Japan, introduction of nuclear safety regulations using risk information such as probabilistic safety assessment (PSA) has been considered and utilization of risk information in the rational and practical measures on safety assurance has made a progress to start with the operation or inspection area. The report compiled results of investigation and studies of PSA quality assurance in risk-informed activities in the USA. Relevant regulatory guide and standard review plan as well as issues and recommendations were reviewed for technical adequacy and advancement of probabilistic risk assessment technology in risk-informed decision making. Useful and important information to be referred as issues in PSA quality assurance was identified. (T. Tanaka)

  11. Considering threats of nuclear terrorism

    International Nuclear Information System (INIS)

    Sato, Satoshi

    2013-01-01

    Anti-terrorism measures of nuclear power station in Japan consisted of three physical protection areas separated into limited access area, protected area with disposition of riot police riding in special guard vehicle, and inner area. Drilling of measures to protect against terrorism had been conducted based on design basis threat (DBT) and effectiveness of anti-terrorism measures corresponding with updated DBT had been evaluated by the inspection. Since nuclear power station had been target of terrorism using bomb, aircraft or military operation in overseas countries, anti-terrorism measures of nuclear power station in Japan should be paid more attention so as to overcome their weakness supported by Government's commitments like United States. (T. Tanaka)

  12. Present status and future of maintenance robots of nuclear power plants. Part 2. Toshiba Corporation's activity

    International Nuclear Information System (INIS)

    Naruse, Katsuhiko; Sato, Katsuhiko

    2005-01-01

    Underwater remotely operated vehicle for inspection, repair and preventive maintenance in a narrow space had been developed with advanced robot technologies. Maintenance robot for core internals worked under high radiation environment and size limit of applied parts and passage space. Visual inspection (VT) and ultrasonic testing (UT) of welds using core shroud vehicle had been realized. Swimming type vehicle for VT and crawler type vehicle for cleaning was also prepared. Position measuring system for VT with image processing based on position information of movable joint axis and micro replica equipment to obtain microstructure image of structure surface could be combined. Underwater remotely operated maintenance and repair system was applied to improve surface stresses around welds to compression with laser peening technology and also to remove cracks with electric discharge machining for prevention of crack propagation. (T. Tanaka)

  13. Revista Corpoconsciência v. 8, n. 2, 2004

    OpenAIRE

    2004, Revista Corpoconsciência v. 8, n. 2

    2016-01-01

    Ponto de VistaMedalhas Olímpicas: mero acaso, leis de incentivo ao desporto de alto nível ou, conseqüência do alto índice de desenvolvimento humano? A china chegou para ficar?p. 9-18PAULO ROBERTO DE OLIVEIRA ArtigosO espetáculo do circo e a estética do riscop. 19-40MARINA SOUZA LOBO GUZZO Treinamento resistido intenso como indutor da síndrome de Isquemia-reperfusão: uma análise exploratóriap. 41-54MARCELO CONTE, SANDRO PERCARIO, SERGIO PAULO DE TARSO DOMINGUES, MAURO TANAKA RIYIS, JULIANA PIA...

  14. Low-energy electron scattering from methane

    International Nuclear Information System (INIS)

    Bundschu, C.T.; Gibson, J.C.; Buckman, S.J.; Brunger, M.J.; Gianturco, F.A.

    1997-01-01

    Absolute differential cross sections for elastic scattering and vibrational excitation (ν 2.4 , ν 1.3 ) of CH 4 have been measured at incident energies between 0.6 and 5.4 eV. These cross sections have also been extrapolated and integrated in order to derive integral and momentum transfer cross sections which are compared with the results of previous single-collision and electron swarm experiments. Elastic differential cross sections have also been calculated using a body-fixed (BF), single-centre expansion (SCE) for the close-coupled (CC) equations. There is excellent agreement between the present data and the most recent elastic scattering results of Boesten and Tanaka, but substantial discrepancies between these two data sets and several previous measurements. There is also excellent agreement at most energies between the present measured and calculated elastic cross sections. (author)

  15. Electrochemical study of actinide nitrides in LiCl-KCl eutectic melts

    International Nuclear Information System (INIS)

    Shirai, Osamu; Iwai, Takashi; Arai, Yasuo; Kato, Tetsuya

    2003-01-01

    Nitride fuels for advanced fast breeder reactors, transmutation of minor actinides and Pu burning fast reactors have been contemplated because of their high thermal conductivity and high melting point. Research on the pyro-chemical reprocessing of nitride fuels has been conducted at the JAERI based on chlorine molten salt electro-refining to obtain fundamental data of redox reactions and pyro-chemistry for minor actinides such as NpN, AmN, CmN and their solid solutions. Experiments on anodic dissolution of UN, PuN and NpN in LiCl-KCl eutectic melts were made with cyclic voltamogram measurements and redox reactions of each actinide nitride were analyzed to show mechanisms of chlorine nitrides formation and establish optimum conditions of actinide metal recovery onto solid cathode. (T. Tanaka)

  16. Fast breeder reactor electromagnetic pump

    International Nuclear Information System (INIS)

    Araseki, Hideo; Murakami, Takahiro

    2008-01-01

    Main pumps circulating sodium in the FBR type reactor have been mechanical types, not electromagnetic pumps. Electromagnetic pump of 1-2 m 3 /min has been used as an auxiliary pump. Large sized electromagnetic pumps such as several hundred m 3 /min have not been commercialized due to technical difficulties with electromagnetic instability and pressure pulsations. This article explained electromagnetic and fluid equations and magnetic Reynolds number related with electromagnetic pumps and numerical analysis of instability characteristics and pressure pulsations and then described applications of the results to FBR system. Magnetic Reynolds number must be chosen less than one with appropriate operating frequency and optimum slip of 0.2-0.4. (T. Tanaka)

  17. Track leading to decision of 'framework for nuclear energy policy'. Reading the public attitude with public opinions (the first). Contents of a new plan (as of June 2005)

    International Nuclear Information System (INIS)

    Shimooka, Hiroshi

    2006-01-01

    The Government decides to respect the 'Framework for Nuclear Energy Policy', which was decided by the Atomic Energy Commission on October 11th, 2005, as a basic principle for the nuclear energy policy and promote research, development and utilization of nuclear science and engineering. The Planning Council asked public opinion and received 758 opinions from 393 citizens. The Council continued the deliberation taking these opinions and compiled a preliminary draft of the 'Framework for Nuclear Energy Policy'. Reading the public attitude with public opinions had been conducted by the author, which showed the necessity for the nation to communicate crucial issues such as the nation's role of nuclear program's implementation, reasons for further promotion of nuclear program and its impacts on environments as well as more preferable introduction of new energy or energy conservation in stead of nuclear power, more to the public. (T. Tanaka)

  18. Track leading to decision of 'framework for nuclear energy policy'. Reading the public attitude with public opinions (the second). Framework for nuclear energy policy (as of July 2005)

    International Nuclear Information System (INIS)

    Shimooka, Hiroshi

    2006-01-01

    The Government decides to respect the 'Framework for Nuclear Energy Policy', which was decided by the Atomic Energy Commission on October 11th, 2005, as a basic principle for the nuclear energy policy and promote research, development and utilization of nuclear science and engineering. The Atomic Energy Commission asked the public to comment on the draft and held Public Hearings at five different venues. The Planning Council finalized the draft, taking the 1717 opinions from 701 citizens thus gathered into the consideration. Reading the public attitude with public opinions had been conducted by the author, which showed a large percentage of the consent to the policy and, at the same time, the necessity for the nation to make more efforts to communicate with the public in simple and more concise terms or listen to the public, and also to gain the public trust through education and public relations. The pros and cons both commented that the mass media was not fair. (T. Tanaka)

  19. Development of the Japanese nuclear power generation and its historical background

    International Nuclear Information System (INIS)

    Yamana, Hajimu

    2013-01-01

    Government's Fukushima Nuclear Accident Investigation Commission pointed out not only technical but also institutional or organizational governance problems. Nuclear power was 'complex technology' consisting of various basic technologies while it was entangled with so many non-technical factors such as energy economics, social psychology, international requirements and ideology. In the course of expansion of Japanese nuclear power, it would be undeniable there existed lack of comprehensive or horizontal activities and delay of getting solution on essential agenda. This article described comprehensive review on history and its background of Japanese nuclear power development started as national policy of energy security. Reconstruction of governance to control technical and institutional issues and establishment of rational and serious attitude for safety assurance (culture) might be indispensable for nuclear power to continue to remain for energy security utilizing domestic superior technology. (T. Tanaka)

  20. Proceeding of 27th domestic symposium on trends in aging management and current status of aging degradation studies in nuclear power plants

    International Nuclear Information System (INIS)

    2000-11-01

    As the 27th domestic symposium of Atomic Energy Research Committee, the Japan Welding Engineering Society, the symposium was held titled as 'Trends of aging managements and current status of aging effect studies in nuclear power plants'. Six speakers gave lectures titled as 'Present status of research on mechanism and prediction method of neutron irradiation embrittlement of pressure vessel steels', 'Present status of research on mechanism and prediction method of environmentally assisted cracking in the LWR environments', 'Domestic and overseas trends of aging management of the LWR plants', 'Trends of prediction/evaluation, inspection/monitoring and repair/replacement technologies for aging of the LWR plants', 'Present status of research on mechanism and prediction method of high cycle thermal fatigue due to the thermal fluid-structure interaction in the LWR environments' and Present status of research on very high cycle fatigue of structural materials'. (T. Tanaka)

  1. The Helmholtz legacy in physiological acoustics

    CERN Document Server

    Hiebert, Erwin

    2014-01-01

    This book explores the interactions between science and music in the late nineteenth- and early twentieth century. It examines and evaluates the work of Hermann von Helmholtz, Max Planck, Shohe Tanaka, and Adriaan Fokker, leading physicists and physiologists who were committed to understanding crucial aesthetic components of the art of music, including the standardization of pitch and the implementation of various types of intonations. With a mixture of physics, physiology, and aesthetics, author Erwin Hiebert addresses throughout the book how just intonation came to intersect with the history of keyboard instruments and exert an influence on the development of Western music. He begins with the work of Hermann von Helmholtz, a leading nineteenth-century physicist and physiologist who not only made important contributions in vision, optics, electrodynamics and thermodynamics, but also helped advanced the field of music theory as well. The author traces the Helmholtzian trends of thought that become inherently ...

  2. Research and development of decontamination and decommission for tritiated wastes in fusion reactor

    International Nuclear Information System (INIS)

    Okuno, K.

    1999-01-01

    A review is presented on the decontamination and decommissioning of tritium wastes. Tritium takes a variety of chemical forms, e. g. tritium gases (HT, DT, D 2 ) and tritiated water (HTO, DTO, T 2 O) . Furthermore the behavior of tritium depends on its chemical forms. Concerning the decontamination, several methods have devised and applied in these years. In the present paper the need of the improvement is noted for each method. Smear, and soak or washout are simple and widely used, but time-consuming. In addition the method applies only to the surface contamination. For high tritium contamination, hot gas purge and thermal desorption may work. Use of electric discharges and laser irradiation is now under testing. (Tanaka, Y.)

  3. Construction of new education system on nuclear energy and radiation after experience of Fukushima Daiichi Nuclear Power Plant accident. Improvement of response capability of educational fields against nuclear power plant accident

    International Nuclear Information System (INIS)

    Matsuzuru, Hideo; Chida, Mitsuhisa; Sakurai, Fumio; Hirose, Masami

    2011-01-01

    Fukushima Daiichi Nuclear Power Plant (NPP) accident brought about confusion in elementary and secondary educational fields due to lack of teacher's knowledge of nuclear power, radiation safety and protection, and information about regional radiation and radioactivity data. In order to improve their response capability against NPP accident to secure safety of the pupil and student, new education system on nuclear energy and radiation was constructed such as educational course of 'nuclear energy and radiation safety' for pre-service teacher training system faculty students and training course of 'radiation dose measurement and evaluation' for in-service teacher and professors. Feasibility studies were also performed to construct information network for supporting schools at NPP accident so as to provide effective information about radiation and radioactivity data for educational fields. (T. Tanaka)

  4. Defence in depth in nuclear safety learning from 'pre-symptomatic diseases'

    International Nuclear Information System (INIS)

    Fukuyama, Shigeru

    2011-01-01

    Traditional Chinese medicine argued 'pre-symptomatic diseases', which encouraged for a physician to treat before the ailment occurred. This article described such prophylactic concept was compared to that of defense in depth in nuclear safety, which suggested encouragement of daily activities with safety awareness, preventive maintenance and appropriate treatment for incidents of aged plants would reduce or mitigate their effects. Area of safety culture was also included. Importance of human resources development for safety culture and need of establishment of database concerning new knowledge and experiences were highly recommended. In reality various slight events, whose level of the International Nuclear Event Scale (INES) were less than 2, occurred before a large accident happened to occur. Efforts to reduce events whose level of INES was less than 2 or precursor of accidents would prevent level 3 serious accidents as maximum accident of defense in depth or mitigate the extension to a larger accident. (T. Tanaka)

  5. Predicting performance of polymer-bonded Terfenol-D composites under different magnetic fields

    International Nuclear Information System (INIS)

    Guan Xinchun; Dong Xufeng; Ou Jinping

    2009-01-01

    Considering demagnetization effect, the model used to calculate the magnetostriction of the single particle under the applied field is first created. Based on Eshelby equivalent inclusion and Mori-Tanaka method, the approach to calculate the average magnetostriction of the composites under any applied field, as well as the saturation, is studied by treating the magnetostriction particulate as an eigenstrain. The results calculated by the approach indicate that saturation magnetostriction of magnetostrictive composites increases with an increase of particle aspect and particle volume fraction, and a decrease of Young's modulus of the matrix. The influence of an applied field on magnetostriction of the composites becomes more significant with larger particle volume fraction or particle aspect. Experiments were done to verify the effectiveness of the model, the results of which indicate that the model only can provide approximate results.

  6. Train medical physicist-urgent need for advanced radiotherapy

    International Nuclear Information System (INIS)

    Hareyama, Masato; Teshima, Teruki; Yamamoto, Tokihiro; Haga, Akihiro; Nakagawa, Keiichi; Uesaka, Mitsuru

    2008-01-01

    A Japanese advanced charged particle therapy for cancer that places fewer physical burdens on patients is leading the world and stereotactic radiotherapy and intensity-modulated radiotherapy (IMRT) have been implemented also as a high precision radiotherapy. For the further advancement and dissemination of the therapy, training and qualification of medical physicists has become more needed. Cancer professional train course plan has been performed at many universities in Japan partly to train medical physicists. This special issue consists of seven relevant articles from experts of academia. Medical physicists have been qualified by the Japan Radiological Society, but should have national qualification such as to carry out the R and D of therapy equipment. This has been supported by many academia such as the Japanese Society for Therapeutic Radiology and Oncology (JASTRO) but not by the Japan Association of Radiological Technologists (JART). (T. Tanaka)

  7. US nuclear policy and business trend of Japan's nuclear industries

    International Nuclear Information System (INIS)

    Matsuo, Yuji

    2010-01-01

    As several countries in the east-Asia and middle-east area have been taking an increasing interest in the deployment of nuclear power generation, Japan's nuclear industries have promoted international business activities including the success in the bid of second nuclear power plants in Vietnam. While there are plans for more than thirty of new reactors in the US, the lifetime extension of existing aged reactors, development of non-existing natural gas and trend of greenhouse gases reduction measures have dampened these plans and probably most of new units will not start construction by 2030. This article reviewed the details of US's new nuclear power introduction, trend of recent government's policies, future perspective of nuclear power construction and business trend of Japan's nuclear industries. Japan's industries should be flexible regarding nuclear power as one option to realize low-carbon society. (T. Tanaka)

  8. Significance assessment of small-medium sized reactors

    Energy Technology Data Exchange (ETDEWEB)

    Kanno, Minoru [Japan Atomic Power Co., Research and Development Dept., Tokyo (Japan)

    2002-12-01

    Preliminary assessment for deployment of small-medium sized reactor (S and M reactor) as a future option has been conducted at the JAPCO (Japan Atomic Power Company) under the cooperation with the CRIERI (Central Research Institute of Electric Power Industry). Significance of the S and M reactor introduction is listed as follows; lower investment cost, possible siting near demand side, enlarged freedom of siting, shorter transmission line, good compatibility with slow increase of demand and plain explanation of safety using simpler system such as integral type vessel without piping, natural convection core cooling and passive safety system. The deployment of simpler plant system, modular shop fabrication, ship-shell structured building and longer operation period can assure economics comparable with that of a large sized reactor, coping with scale-demerit. Also the S and M reactor is preferable in size for the nuclear heat utilization such as hydrogen production. (T. Tanaka)

  9. A fundamental study on measurement of internal residual stress of sintered Fe-Cr/TiN composite material with neutron diffraction

    International Nuclear Information System (INIS)

    Takago, Shigeki; Sasaki, Toshihiko; Hirose, Yukio; Minakawa, Nobuaki; Morii, Yukio

    2001-01-01

    The Neutron diffraction technique was applied for the internal stress measurements of a composite material consisted of chromium alloy and titanium nitride manufactured by the powder metallurgy. The material has been developed for the valve seat insert of diesel engines in automobiles, because material has high wear-resistance and heat-resistance. In this study, the influence of the titanium nitride on the stresses in each phase was investigated. The Fe-Cr 200 diffraction peak occurs at 2θ=93.4 deg. and the TiN 311 diffraction peak at 2θ=109.5 deg are available. Neutron diffraction data obtained from both phases were compared to the Micromechanics model based on Eshelby's approach and the Mori-Tanaka theorem. It was found that experimental phase stress agrees well with the theoretical estimation. It has been shown that neutron diffraction method is suitable to determine the residual stress of composite materials. (author)

  10. Philosophy of safety assurance after the Fukushima Daiichi accident. From views of experts

    International Nuclear Information System (INIS)

    Hisada, Tsukasa

    2014-01-01

    Knowledge incorporating meetings were held to exchange views of experts in order to learn respective safety concept and philosophy of safety assurance except nuclear area, how should be prepared for beyond expectation and what was needed to build social credibility, and how to upgrade safety measures of nuclear power station after the Fukushima Daiichi accident. Meeting had been held twice a year since FY2012 and two lecturers were invited at each meeting to give a lecture on the specified theme such as safety assurance in aviation area and chemical plants, and 'safety target of engineering system'. Common or different views on safety assurance between nuclear and other areas were identified, and risk concept and sincere attitude of explaining engineer were mentioned quite important for preparation for beyond expectation and building social credibility. (T. Tanaka)

  11. Basic experiments of a MgB2 neutron detector and studies on its applicability

    International Nuclear Information System (INIS)

    Ishida, T.; Kawamata, S.; Kato, M.

    2004-01-01

    MgB2 is a material with 40K in the superconducting transition temperature, the highest among metal systems, and its basic physical properties elucidation and application are expected. We paid attention that the compound contains boron in this material and the isotope B-10 of boron reacts with the neutron at a very high probability. This research is to evaluate making the hot spot type neutron detector which obtains the change in the electric resistance pulsing with destruction of the superconductivity of MgB2 by the nuclear reaction energy when the neutron is irradiated to superconducting MgB2. The meander pattern was made for MgB2 thin film with the electron beam drawing device, the neutron irradiation experiment was executed, and pulsed signal was confirmed. A further confirmation is required whether this signal is an electric resistance change in MgB2 thin film by the neutron irradiation. (T. Tanaka)

  12. A micro-macro relationship for modeling the damage of discontinuous reinforced composites

    Energy Technology Data Exchange (ETDEWEB)

    Bourgeois, N. (Lab. MSS-MAT, Ecole Centrale de Paris, 92 Chatenay-Malabry (France)); Keyvani, M. (Lab. MSS-MAT, Ecole Centrale de Paris, 92 Chatenay-Malabry (France)); Baptiste, D. (Lab. MSS-MAT, Ecole Centrale de Paris, 92 Chatenay-Malabry (France) Lab. LM3, ENSAM, 75 Paris (France))

    1993-11-01

    In discontinuous reinforced composites, different damage processes are observed : reinforcement fracture, interface debonding and matrix failure depending on the type of material and loading. So, local criteria of damage initiation were introduced in a micromechanical model to reproduce these phenomena and predict the material behavior. The model is based on the stiffness prediction by the Mori and Tanaka approach. Tensile stress-strain curves until total failure are simulated in the case of SMC type composite. The evolution with damage of all the elastic constants is also compared with ultrasonic measurements. In an Al/SiCp composite, damage was identified to be particle fracture. Tensile behaviors with or without damage are compared. Three solutions to replace the broken particles are studied. (orig.).

  13. Environment, information divide and design

    International Nuclear Information System (INIS)

    Iwata, Shuichi

    2007-01-01

    Design of human environment is to be made with understanding human-human and human-environment relations and environmental behaviors of human beings, artifacts and natural things and overcoming their differences and contradictions. Information divide exists naturally due to various differences of human beings. Many problems in the area of nuclear energy seem to be derived from various differences and contradictions in central-local interests, between the particles concerned and unconcerned and also in human being-artifacts relations. In order to harmonize nuclear energy with the society, it is necessary to vanish differences and solve contradictions with redesigning environments of those problems in their context. Case studies are highly recommended with continuous efforts to develop more universal design methodology. Open access to information and data in science and technology is encouraged in the area of nuclear energy. (T. Tanaka)

  14. Training and qualification of nuclear power plant operators

    International Nuclear Information System (INIS)

    Ohsuga, Y.

    2008-01-01

    Based on training experiences of the nuclear power plant operators of pressurized water reactors (PWR) at the Nuclear Power Training Center Ltd. (NTC) in Japan, training programs were reviewed referring to US training programs. A systematic approach is deployed to them, which mainly consist of on-the-job training and the NTC training courses to meet the needs of all operators from beginners to experienced veterans according to their experiences and objectives. The NTC training is conducted using the simulators that simulate the nuclear power plant dynamics through the use of computers. The operators trained at the NTC work in the central control room of every PWR power plant. The NTC also carries out the qualification examinations for the shift managers. (T. Tanaka)

  15. Present state and some problem of health services for residents of local government neighboring Fukushima Daiichi Nuclear Power Station

    International Nuclear Information System (INIS)

    Ohira, Yoko

    2012-01-01

    After nuclear disaster, residents of 8 towns and villages of Futaba county within Alert area moved to the west and further removed far. Public offices were also moved. On March 12 health services were started to accept refugee residents at the first refuge. From the end of March to the first part of April they moved to second refuge at specified hotel or inn prepared for a long-term refugee life and then they removed from second refuge to temporary dwelling or loan house. Some of them moved to temporary dwelling at Iwaki city and totaled to more than 20000. New organization of the Fukushima prefecture was established in Iwaki city to start health services for refugee including mental cares. (T. Tanaka)

  16. Status of food and raw milk supply and problem just after the reactor accident

    International Nuclear Information System (INIS)

    Hirakawa, Sachiko; Murakami, Kana; Yoshizawa, Nobuaki; Takizawa, Mari; Kawai, Masaki; Sato, Osamu; Takagi, Syunji; Nakamura, Takashi

    2014-01-01

    Iodine 131 was detected in the environment and the food such as vegetables, raw milk and tap water just after the reactor accident following the East Japan Great Earthquake occurred in March 11, 2011. This article investigated status of refuge of Fukushima residents, their dietary life and food distribution from March 11 to 31 just after the accident so as to reevaluate internal exposure dose with Iodine 131. Investigation results showed most of food taken by refugees was confirmed food stock or relief supplies outside from the disaster area and suggested food contaminated with Iodine 131 was not widely consumed and distributed due to limit to send designated vegetables, restriction of tap water intake, damaged distribution facilities and closing down of retail stores. Restriction of tap water intake was only applied partly, so this might cause internal exposure dose due to tap water. (T. Tanaka)

  17. Two new species of the Pterostichus macrogenys species group (Coleoptera, Carabidae discovered in shallow subterranean habitats in northern Honshu, Japan

    Directory of Open Access Journals (Sweden)

    Kôji Sasakawa

    2017-01-01

    Full Text Available Shallow subterranean environments have recently received attention as a habitat for Carabidae beetles, and many new species have been discovered using collection techniques devised for this habitat. We report the discovery of two new species of the macrogenys species group of the Pterostichus subgenus Nialoe Tanaka, 1958, collected by subterranean baited traps in northern Honshu, Japan. Pterostichus shinbodakensis Sasakawa & Itô, sp. n. is described from Mt. Shinbodake, Niigata Prefecture, and P. tateishiyamanus Sasakawa & Itô, sp. n. is described from the southeastern foot of Mt. Tateishiyama, Fukushima Prefecture. Comparative male genital morphology shows that among the known species, the two new species are most closely related to P. falcispinus Sasakawa, 2005 and P. chokaisanus Sasakawa, 2009, respectively. In addition, sympatric occurrence of P. shinbodakensis with a smaller, unidentified species of the species group was also confirmed. The implications of these results for future studies of the macrogenys species group, as well as those of Nialoe, are discussed.

  18. De novo variants inEBF3are associated with hypotonia, developmental delay, intellectual disability, and autism.

    Science.gov (United States)

    Tanaka, Akemi J; Cho, Megan T; Willaert, Rebecca; Retterer, Kyle; Zarate, Yuri A; Bosanko, Katie; Stefans, Vikki; Oishi, Kimihiko; Williamson, Amy; Wilson, Golder N; Basinger, Alice; Barbaro-Dieber, Tina; Ortega, Lucia; Sorrentino, Susanna; Gabriel, Melissa K; Anderson, Ilse J; Sacoto, Maria J Guillen; Schnur, Rhonda E; Chung, Wendy K

    2017-11-01

    Using whole-exome sequencing, we identified seven unrelated individuals with global developmental delay, hypotonia, dysmorphic facial features, and an increased frequency of short stature, ataxia, and autism with de novo heterozygous frameshift, nonsense, splice, and missense variants in the Early B-cell Transcription Factor Family Member 3 ( EBF3 ) gene. EBF3 is a member of the collier/olfactory-1/early B-cell factor (COE) family of proteins, which are required for central nervous system (CNS) development. COE proteins are highly evolutionarily conserved and regulate neuronal specification, migration, axon guidance, and dendritogenesis during development and are essential for maintaining neuronal identity in adult neurons. Haploinsufficiency of EBF3 may affect brain development and function, resulting in developmental delay, intellectual disability, and behavioral differences observed in individuals with a deleterious variant in EBF3 . © 2017 Tanaka et al.; Published by Cold Spring Harbor Laboratory Press.

  19. See meeletu, meeletu maailm ehk Ära siit! / Rein Tootmaa

    Index Scriptorium Estoniae

    Tootmaa, Rein

    2001-01-01

    IV Pimedate Ööde Filmifestivalil linastunud absurdifilmidest : Prantsusmaa "Harry aitab sind" : režissöör Dominik Moll, Jaapani "Esmaspäev" ("Monday") : režissöör Hiroyuki Tanaka, Horvaatia "Marssal Tito vaim" ("Marshal") : režissöör Vinko Breshan, Taani "Kuningas on elus" ("King Is Alive") : režissöör Kristian Levring, Rootsi "Laulud teiselt korruselt" ("Sånger från andra våningen"): režissöör Roy Andersson, Šveitsi "Kes on järgmine ?" ("Who's Next ?") : režissöör Felix Tissi, Saksamaa "Tuvalu" : režissöör Veit Helmer ja Venemaa ning mitme Euroopa riigi ühisfilm "Kuu isaks" ("Luna papa") : režissöör Bahtijer Hudoinazarov. Kokkuvõte inglise keeles lk. 128

  20. The helmholtz legacy in physiological acoustics

    CERN Document Server

    Hiebert, Erwin

    2014-01-01

    This book explores the interactions between science and music in the late nineteenth- and early twentieth century. It examines and evaluates the work of Hermann von Helmholtz, Max Planck, Shohe Tanaka, and Adriaan Fokker, leading physicists and physiologists who were committed to understanding crucial aesthetic components of the art of music, including the standardization of pitch and the implementation of various types of intonations. With a mixture of physics, physiology, and aesthetics, author Erwin Hiebert addresses throughout the book how just intonation came to intersect with the history of keyboard instruments and exert an influence on the development of Western music. He begins with the work of Hermann von Helmholtz, a leading nineteenth-century physicist and physiologist who not only made important contributions in vision, optics, electrodynamics and thermodynamics, but also helped advanced the field of music theory as well. The author traces the Helmholtzian trends of thought that become inherently ...

  1. Efforts to improve safety of nuclear power plants

    International Nuclear Information System (INIS)

    Matsuura, Masayoshi; Hisamochi, Kohei; Ando, Koji

    2014-01-01

    Based on lessons learned from Fukushima Daiichi Nuclear Power Plant (NPP) Accident, this article described (1) basic philosophy of enhanced safety measures of Advanced Boiling Water Reactor(ABWR) NPP, which was the only Generation III+ reactor operating in the world, (2) applicability to new regulatory requirements including countermeasures against severe accident, natural disaster and terrorism, and (3) outlines of safety systems against design basis accidents and major accidents deployed in existing Japanese NPPs and also planned in oversea NPPs such as Visaginas NPP in Lithuania were described. Backup water injection system and mobile/portable components for water injection and sources of power were prepared for further enhanced safety measures. As improved permanent safety components against major accident, filtered venting system with improved operability and nitrogen atmosphere, main steam relief valve with enhanced function in DC losses, and enhanced high-pressure water injection using turbine water lubricated type turbine pumps were detailed. (T. Tanaka)

  2. Bending analysis of agglomerated carbon nanotube-reinforced beam resting on two parameters modified Vlasov model foundation

    Science.gov (United States)

    Ghorbanpour Arani, A.; Zamani, M. H.

    2018-01-01

    The present work deals with bending behavior of nanocomposite beam resting on two parameters modified Vlasov model foundation (MVMF), with consideration of agglomeration and distribution of carbon nanotubes (CNTs) in beam matrix. Equivalent fiber based on Eshelby-Mori-Tanaka approach is employed to determine influence of CNTs aggregation on elastic properties of CNT-reinforced beam. The governing equations are deduced using the principle of minimum potential energy under assumption of the Euler-Bernoulli beam theory. The MVMF required the estimation of γ parameter; to this purpose, unique iterative technique based on variational principles is utilized to compute value of the γ and subsequently fourth-order differential equation is solved analytically. Eventually, the transverse displacements and bending stresses are obtained and compared for different agglomeration parameters, various boundary conditions simultaneously and variant elastic foundation without requirement to instate values for foundation parameters.

  3. The tsunami probabilistic risk assessment (PRA). Example of accident sequence analysis of tsunami PRA according to the standard for procedure of tsunami PRA for nuclear power plants

    International Nuclear Information System (INIS)

    Ohara, Norihiro; Hasegawa, Keiko; Kuroiwa, Katsuya

    2013-01-01

    After the Fukushima Daiichi nuclear power plant (NPP) accident, standard for procedure of tsunami PRA for NPP had been established by the Standardization Committee of AESJ. Industry group had been conducting analysis of Tsunami PRA for PWR based on the standard under the cooperation with electric utilities. This article introduced overview of the standard and examples of accident sequence analysis of Tsunami PRA studied by the industry group according to the standard. The standard consisted of (1) investigation of NPP's composition, characteristics and site information, (2) selection of relevant components for Tsunami PRA and initiating events and identification of accident sequence, (3) evaluation of Tsunami hazards, (4) fragility evaluation of building and components and (5) evaluation of accident sequence. Based on the evaluation, countermeasures for further improvement of safety against Tsunami could be identified by the sensitivity analysis. (T. Tanaka)

  4. The tsunami probabilistic risk assessment of nuclear power plant (3). Outline of tsunami fragility analysis

    International Nuclear Information System (INIS)

    Mihara, Yoshinori

    2012-01-01

    Tsunami Probabilistic Risk Assessment (PRA) standard was issued in February 2012 by Standard Committee of Atomic Energy Society of Japan (AESJ). This article detailed tsunami fragility analysis, which calculated building and structure damage probability contributing core damage and consisted of five evaluation steps: (1) selection of evaluated element and damage mode, (2) selection of evaluation procedure, (3) evaluation of actual stiffness, (4) evaluation of actual response and (5) evaluation of fragility (damage probability and others). As an application example of the standard, calculation results of tsunami fragility analysis investigation by tsunami PRA subcommittee of AESJ were shown reflecting latest knowledge of damage state caused by wave force and others acted by tsunami from the 'off the Pacific Coast of Tohoku Earthquake'. (T. Tanaka)

  5. Numerical modeling of the thickness dependence of zinc die-cast materials

    Science.gov (United States)

    Page, Maria Angeles Martinez; Ruf, Matthias; Hartmann, Stefan

    2017-11-01

    Zinc die casting alloys show varying material properties over the thickness in their final solid state, which causes a change in the mechanical response for specimens with different thicknesses. In this article, we propose a modeling concept to account for the varying porosity in the constitutive modeling. The material properties are effectively incorporated by combining a partial differential equation describing the distribution of the pores by a structural parameter with the Mori-Tanaka approach for linear elasticity. The distribution of the porosity is determined by polished cut images, for which the procedure is explained in detail. Finite element simulations of the coupled system incorporating the thickness dependence show the applicability of this approach.

  6. Strength Estimation of Die Cast Beams Considering Equivalent Porous Defects

    Energy Technology Data Exchange (ETDEWEB)

    Park, Moon Shik [Hannam Univ., Daejeon (Korea, Republic of)

    2017-05-15

    As a shop practice, a strength estimation method for die cast parts is suggested, in which various defects such as pores can be allowed. The equivalent porosity is evaluated by combining the stiffness data from a simple elastic test at the part level during the shop practice and the theoretical stiffness data, which are defect free. A porosity equation is derived from Eshelby's inclusion theory. Then, using the Mori-Tanaka method, the porosity value is used to draw a stress-strain curve for the porous material. In this paper, the Hollomon equation is used to capture the strain hardening effect. This stress-strain curve can be used to estimate the strength of a die cast part with porous defects. An elastoplastic theoretical solution is derived for the three-point bending of a die cast beam by using the plastic hinge method as a reference solution for a part with porous defects.

  7. Background and perspective on rapid progress and deepening of international development of nuclear industry-composition of international nuclear energy business 'cooperation and competition'

    International Nuclear Information System (INIS)

    Kano, Tokio; Kanda, Keji; Ishizuka, Nobuo

    2005-01-01

    Based on the recognition that international development of nuclear industry was important by a viewpoint of international cooperation to neighboring Asian area and also it was the trump that defeated a feeling of domestic confinement, the Japan Atomic Industrial Forum (JAIF) founded Nuclear energy international development gathering' in November 2004. On that occasion our magazine (March, 2005 issue) featured 'prospects and problem of the international development of nuclear energy use'. Slightly for half a year afterwards this nuclear energy international development has been rapidly deepened and become a close-up as a policy of an important strategy of the field of nuclear energy that the government and the private sector were united to make. Therefore the nuclear energy international development was secondly featured from multidirectional points of view such as a background of nuclear energy international development, composition of international nuclear energy business, a main strategy of three makers, approach of finance / a business firm. (T. Tanaka)

  8. Nuclear damage compensation and energy reform

    International Nuclear Information System (INIS)

    Yokemoto, Masafumi

    2013-01-01

    Nuclear damage compensation and energy reform were closely related. Nuclear damage compensation cost should be part of generation cost of nuclear power. Extend of nuclear damage compensation was limited by compensation standard of Tokyo Electric Power Co. (TEPCO) following guidelines of Dispute Reconciliation Committee for Nuclear Damage Compensation. TEPCO had already paid compensation of about two trillion yen until now, which was only a part of total damage compensation cost. TEPCO had been provided more than 3.4 trillion yen by Nuclear Damage Liability Facilitation Cooperation, which would be put back by nuclear operators including TEPCO. TEPCO could obtain present raising funds and try to reconstruct business with restart of nuclear power, which might disturb energy reform. Present nuclear damage compensation scheme had better be reformed with learning more from Minamata disease case in Japan. (T. Tanaka)

  9. Dynamic Buckling of Embedded Laminated Nanocomposite Plates Based on Sinusoidal Shear Deformation Theory

    Directory of Open Access Journals (Sweden)

    Mohammd Sharif Zarei

    2016-12-01

    Full Text Available In this study, the dynamic buckling of the embedded laminated nanocomposite plates is investigated. The plates are reinforced with the single-walled carbon nanotubes (SWCNTs, and the Mori-Tanaka model is applied to obtain the equivalent material properties of them. Based on the sinusoidal shear deformation theory (SSDT, the motion equations are derived using the energy method and Hamilton's principle. The Navier’s method is used in conjunction with the Bolotin's method for obtaining the dynamic instability region (DIR of the structure. The effects of different parameters such as the volume percentage of SWCNTs, the number and orientation angle of the layers, the elastic medium, and the geometrical parameters of the plates are shown on DIR of the structure. Results indicate that by increasing the volume percentage of SWCNTs the resonance frequency increases, and DIR shifts to right. Moreover, it is found that the present results are in good agreement with the previous researches.

  10. International development of Japan's Nuclear Industry. Indispensable Japan-U.S. cooperation

    International Nuclear Information System (INIS)

    Saigo, Masao

    2006-01-01

    It is significant to internationally develop the nuclear power plants technology that has been fostered by Japan's nuclear industry. It is also important to work with taking the degree of development of nuclear power plants of the recipient country into consideration. ''Forum on International Development of Nuclear Industry'' organized by the Japan Atomic Industrial Forum, Inc. (JAIF) proposed it would be indispensable for a Japan's nuclear industry to establish a Japan-U.S. Cooperation with the support of Government in order to develop the nuclear technology internationally. In November 2005, the investigating team including utilities and nuclear industry visited U.S. and exchanged opinions on its possibility. Investigating results and their evaluation were described. (T.Tanaka)

  11. Low Activation Joining of SiC/SiC Composites for Fusion Applications: Modeling Thermal and Irradiation-induced Swelling Effects on Integrity of Ti3SiC2/SiC Joint

    Energy Technology Data Exchange (ETDEWEB)

    Nguyen, Ba Nghiep; Henager, Charles H.; Kurtz, Richard J.; Ferraris, M.; Katoh, Yutai

    2017-03-31

    This work developed a continuum damage mechanics model that incorporates thermal expansion combined with irradiation-induced swelling effects to study the origin of cracking observed in recent irradiation experiments. Micromechanical modeling using an Eshelby-Mori-Tanaka approach was used to compute the thermoelastic properties of the Ti3SiC2/SiC joint needed for the model. In addition, a microstructural dual-phase Ti3SiC2/SiC model was developed to determine irradiation-induced swelling of the composite joint at a given temperature resulting from differential swelling of SiC and the Ti3SiC2 MAX phase. Three cases for the miniature torsion hourglass (THG) specimens containing a Ti3SiC2/SiC joint were analyzed corresponding to three irradiation temperatures: 800oC, 500oC, and 400oC.

  12. A review of the genus Apristurus (Chondrichthyes: Carcharhiniformes: Scyliorhinidae) from Taiwanese waters.

    Science.gov (United States)

    Nakaya, Kazuhiro; Kawauchi, Junro

    2013-01-01

    Sharks of the genus Apristurus from Taiwanese waters are reviewed for the first time, and incorrect scientific names and wrong taxonomic information given in the literature are corrected. After extensive examination of specimens deposited in various museums, universities and fisheries institutions in Taiwan, Japan and China, the following five species are recognized from Taiwanese waters: Apristurus herklotsi (Fowler, 1934), A. longicephalus Nakaya, 1975, A. gibbosus Meng, Chu & Li, 1985, A. macrostomus Chu, Meng & Li, 1985, and A. platyrhynchus (Tanaka, 1909). Apristurus herklotsi, A. longicephalus, A. gibbosus and A. macrostomus are reported from Taiwanese waters for the first time, and the presence of A. platyrhynchus is formally recognized based on a single voucher specimen. Each species is fully described, and a key to the species of Apristurus in Taiwanese waters is provided. Morphological and biological information of each species is also provided.

  13. Externalities of energy and atomic power

    International Nuclear Information System (INIS)

    2006-09-01

    Energy technology ensures not only energy supply but also has great impacts on society and environments. Economical value and effect evaluation alone doesn't mean appropriate so the evaluation of 'externalities' should be appreciated. In order to assess atomic power in this context, the Atomic Energy Society of Japan set up a research committee on 'externalities of energy and atomic power' from April 2002 to March 2006, whose activities were described in this report. In addition to environmental effects and environmental externalities, four areas were newly studied as follows: (1) biological effects of low dose rate exposure and externalities, (2) externalities as social/economical effects including stable supply and security, (3) energy technologies evaluation and (4) social choice and decision-making. (T. Tanaka)

  14. Estimating salt intake in a Caucasian population

    DEFF Research Database (Denmark)

    Toft, Ulla; Cerqueira, Charlotte; Andreasen, Anne Helms

    2014-01-01

    BACKGROUND: A simple and valid alternative for 24-hour urine collection to estimate populational 24-hour urinary sodium excretion would be desirable for monitoring sodium intake in populations. AIM: To assess the validity of the predicted 24-hour urinary sodium excretion using spot urine and two...... different prediction methods in a Danish population. METHODS: Overall, 473 Danish individuals provided a para-aminobenzoic acid-validated complete 24-hour urine collection and a spot urine sample. Data were collected in the DanThyr study (248 women aged 25-30 years and 60-65 years) and the Inter99 study...... (102 men and 113 women aged 30-60 years), respectively. The measured 24-hour urine sodium excretion was compared with the predicted 24-hour sodium excretion from a causal urine specimen, using both the Tanaka prediction method and a prediction model developed in a Danish population. RESULTS...

  15. Why Diversity Matters: A Roundtable Discussion on Racial and Ethnic Diversity in Librarianship

    Directory of Open Access Journals (Sweden)

    Juleah Swanson

    2015-07-01

    Full Text Available In Brief:  After presenting together at ACRL 2015 to share research we conducted on race, identity, and diversity in academic librarianship, we reconvene panelists Ione T. Damasco, Cataloger Librarian at the University of Dayton, Isabel Gonzalez-Smith, Undergraduate Experience Librarian at the University of Illinois, Chicago, Dracine Hodges, Head of Acquisitions at Ohio State University, Todd Honma, Assistant Professor of Asian American Studies at Pitzer College, Juleah Swanson, Head of Acquisition Services at the University of Colorado Boulder, and Azusa Tanaka, Japanese Studies Librarian at the University of Washington in a virtual roundtable discussion. Resuming the conversation that started at ACRL, we discuss why diversity really matters to academic libraries, librarians, and the profession, and where to go from here. We conclude this article with a series of questions for readers to consider, share, and discuss among colleagues to continue and advance the conversation on diversity in libraries.

  16. Reviews on the Japanese Patent Applications Regarding Nickel/Metal Hydride Batteries

    Directory of Open Access Journals (Sweden)

    Taihei Ouchi

    2016-06-01

    Full Text Available The Japanese Patent Applications filed on the topic of nickel/metal hydride (Ni/MH batteries have been reviewed. Patent applications filed by the top nine battery manufacturers (Matsushita, Sanyo, Hitachi Maxell, Yuasa, Toshiba, FDK, Furukawa, Japan Storage, and Shin-kobe, five component suppliers (Tanaka, Mitsui, Santoku, Japan Metals & Chemicals Co. (JMC, and Shin-Etsu, and three research institutes (Industrial Research Institute (ISI, Agency of Industrial Science and Technology (AIST, and Toyota R & D were chosen as the main subjects for this review, based on their production volume and contribution to the field. By reviewing these patent applications, we can have a clear picture of the technology development in the Japanese battery industry. These patent applications also provide insights, know-how, and future directions for engineers and scientists working in the rechargeable battery field.

  17. Fukushima nuclear accident and the social responsibility of science

    International Nuclear Information System (INIS)

    Yoshioka, Hitoshi

    2011-01-01

    Five months had passed since Fukushima Daiichi Nuclear Power Plant (NPP) accident occurred but still there was no knowing when the accident ended. Released radioactivity seemed to be greater than one million terra Bq and if there occurred an explosive rupture of containment vessel due to the failure of containment vent or occurrence of steam explosion, the amount of released radioactivity might amount to be at least equivalent to or surpass that of Chernobyl NPP accident. There existed still a risk that overheating and meltdown of nuclear fuels might reoccur with loss of cooling due to a possible giant aftershock. This article described total views on significant disaster that the accident brought about on many neighboring residents or wide range of people. After a general discussion about what was social responsibility of scientists, social responsibility of scientists for Fukushima Daiichi NPP accident was discussed. Responsibility of omission was also argued. (T. Tanaka)

  18. Micromechanical models for graded composite materials

    DEFF Research Database (Denmark)

    Reiter, T; Dvorak, G.J.; Tvergaard, Viggo

    1997-01-01

    Elastic response of selected plane-array models of graded composite microstructures is examined under both uniform and linearly varying boundary tractions and displacements, by means of detailed finite element studies of large domains containing up to several thousand inclusions. Models consisting...... of piecewise homogeneous layers with equivalent elastic properties estimated by Mori-Tanaka and self-consistent methods are also analysed under similar boundary conditions. Comparisons of the overall and local fields predicted by the discrete and homogenized models are made using a C/SiC composite system...... with very different Young's moduli of the phases, and relatively steep composition gradients. The conclusions reached from these comparisons suggest that in those parts of the graded microstructure which have a well-defined continuous matrix and discontinuous second phase, the overall properties and local...

  19. EVALUATION OF EFFECTIVE PROPERTIES OF BASALT TEXTILE REINFORCED CERAMIC MATRIX COMPOSITES

    Directory of Open Access Journals (Sweden)

    Soňa Valentová

    2017-11-01

    Full Text Available The present paper is concerned with the analysis of a ceramic matrix composite, more specifically the plain weave textile fabric composite made of basalt fibers embedded into the pyrolyzed polysiloxane matrix. Attention is paid to the determination of effective elastic properties of the yarn via homogenization based on the Mori-Tanaka averaging scheme and the 1st order numerical homogenization method adopting a suitable representative computational model. The latter approach is then employed to simulate the response of the yarn when loaded beyond the elastic limits. The required mechanical properties of individual material phases are directly measured using nanoindentation with in-build scanning probe microscopy. Applicability of the proposed computational methodology is supported by the analysis of a unidirectional fibrous composite, representing the yarn, subjected to a macroscopically uniform strain.

  20. Acute pyogenic discitis in a degenerative intervertebral disc in an adult

    Directory of Open Access Journals (Sweden)

    Masamitsu Tanaka

    2010-08-01

    Full Text Available Masamitsu Tanaka1,2, Hiroshi Shimizu2, Yoshiyuki Yato1, Takashi Asazuma1, Koichi Nemoto11Department of Orthopedic Surgery, National Defense Medical College, Tokorozawa, Saitama; 2Department of Orthopedic Surgery, Self Defense Force Fukuoka Hospital, Kasuga, Fukuoka, JapanAbstract: A 35-year-old male who had been receiving conservative treatment for L4 isthmic spondylolisthesis suffered from pyogenic spondylodiscitis in the degenerative L4/L5 intervertebral disc space, which could be identified by comparison with previous images. Symptoms improved with conservative antibiotic treatment. Neovascularization may occur in the annulus fibrosus of a degenerative intervertebral disc, which may increase the risk of hematogenous infection, leading to “discitis” even in adults.Keywords: spondylodiscitis, spondylitis, discitis, isthmic spondylolisthesis, spondylolysis, intervertebral disc degeneration

  1. Duty and role of Nuclear Regulation Authority facing a crucial moment

    International Nuclear Information System (INIS)

    Asaoka, Mie

    2013-01-01

    Duty of Nuclear Regulation Authority (NRA) was to restore public trust on nuclear regulation spoiled by the Fukushima nuclear accident. How applied such regulation as mandatory back-fitting based on latest knowledge and 40 year operational limit in principle became of great concern. Active faults issue on existing nuclear power station could be a touchstone. Safety side judgment and electric utilities side's proof responsibilities were required as more stringent criteria for active faults. The expert group had been working on assessment of fracture zones under the field survey. Reform of safety regulations should be done based on three important standpoints: (1) not business easiness but public safety was first (2) NRA keeping stance to judge its own safety standard and how NRA ought to be and (3) importance of public disclosure of information and participation in decision-making judging from greatness of public effects caused by nuclear disaster. (T. Tanaka)

  2. Safety analysis of MOX fuels by fuel performance code

    Energy Technology Data Exchange (ETDEWEB)

    Suzuki, Motoe [Japan Atomic Energy Research Inst., Tokai, Ibaraki (Japan). Tokai Research Establishment

    2002-12-01

    Performance of plutonium rick mixed oxide fuels specified for the Reduced-Moderation Water Reactor (RMWR) has been analysed by modified fuel performance code. Thermodynamic properties of these fuels up to 120 GWd/t burnup have not been measured and estimated using existing uranium fuel models. Fission product release, pressure rise inside fuel rods and mechanical loads of fuel cans due to internal pressure have been preliminarily assessed based on assumed axial power distribution history, which show the integrity of fuel performance. Detailed evaluation of fuel-cladding interactions due to thermal expansion or swelling of fuel pellets due to high burnup will be required for safety analysis of mixed oxide fuels. Thermal conductivity and swelling of plutonium rich mixed oxide fuels shall be taken into consideration. (T. Tanaka)

  3. The measurement of the radioactive materials in food

    International Nuclear Information System (INIS)

    Kobayashi, Yuki; Kitauchi, Nobuhiro; Taniguchi, Kazuo

    2013-01-01

    Since food contained radioactive materials released from Fukushima Daiichi nuclear power station accident initiated by Great East Japan earthquake disaster, new reference values of radioactive materials corresponding to 1 mSv/year was set up in April 2012 based on food hygiene law so as to ensure food safety and security for the people. As the request of development of continuous measurement of radioactive materials in food as it is with satisfying this criteria, continuous radioactive cesium measuring device had been developed for screening radioactive materials in food with measurement lower limit of 25 Bq/kg corresponding one fourth of new reference values. The device used CsI detector with CsI scintillator and Si photodiode (multi-pixel photo counter) combined. This article described outlines of the device, measurement examples (powdered food, powdered milk and tea leaves) and future perspective of device development (position sensitive detection of radioactive materials in complex shape food). (T. Tanaka)

  4. ANALISIS RISIKO BENCANA GEMPABUMI DI WILAYAH NUSA TENGGARA BARAT

    Directory of Open Access Journals (Sweden)

    Melki Adi Kurniawan

    2017-02-01

    Full Text Available An investigation of risk identification earthquake disaster in Nusa Tenggara Barat by three factors: the danger factor of earthquakes is Peak Ground Acceleration(PGA, vulnerability factor is population density by district, as well as the capasity factors are HDI (Human Development Index by district in the province of West Nusa Tenggara has be done. PGA value calculation was performed using the attenuation function Fukushima and Tanaka with earthquake parameter data from 1970 - 2014 with the criteria of magnitude ? 4.5mB, depth ? 60 km and the epicenter in the range of 7.5o - 12o and 115o-120o BT and  for disaster risk index calculation earthquake using AHP (Analytical Hierarchy Process. From the calculation of the obtained regions with earthquake disaster risk levels are highest are southern Dompu, Mataram, Bima, northern Bima Regency while the lowest West Sumbawa regency and southern Sumbawa regency.

  5. Acceleration toward the conclusion negotiation of bilateral nuclear cooperation agreements indispensable for globalization

    International Nuclear Information System (INIS)

    Mitsumata, Hiroki; Hattori, Takuya; Ake, Yutaka

    2011-01-01

    According to Japan's basic policies of new growth strategy, it would be one option of the economic growth to increase exports of nuclear power plant system or its equipments. However, bilateral nuclear cooperation agreements are indispensable for business activities on nuclear power. Recently signature of agreement with Jordan, agreed conclusion negotiation with Vietnam and Korea, under negotiation with India and expected negotiation with Indonesia and Malaysia. Signed agreements with Russia and Kazakhstan will be coming into effect and contribute nuclear fuel supply at export of nuclear power system. This special article consists of four expert's papers titled as (1) necessity of conclusion negotiation of nuclear cooperation agreements with several countries simultaneously and in parallel, (2) Japan's nuclear cooperation in new era, (3) desirable acceleration of conclusion negotiation of nuclear cooperation agreements and (4) insurance of nuclear fuel supply fundamental for global business activities of Japan's nuclear industries-best choice to establish cooperative relations with US and Russia. (T. Tanaka)

  6. Injection-Molded Long-Fiber Thermoplastic Composites: From Process Modeling to Prediction of Mechanical Properties

    Energy Technology Data Exchange (ETDEWEB)

    Nguyen, Ba Nghiep; Kunc, Vlastimil; Jin, Xiaoshi; Tucker III, Charles L.; Costa, Franco

    2013-12-18

    This article illustrates the predictive capabilities for long-fiber thermoplastic (LFT) composites that first simulate the injection molding of LFT structures by Autodesk® Simulation Moldflow® Insight (ASMI) to accurately predict fiber orientation and length distributions in these structures. After validating fiber orientation and length predictions against the experimental data, the predicted results are used by ASMI to compute distributions of elastic properties in the molded structures. In addition, local stress-strain responses and damage accumulation under tensile loading are predicted by an elastic-plastic damage model of EMTA-NLA, a nonlinear analysis tool implemented in ABAQUS® via user-subroutines using an incremental Eshelby-Mori-Tanaka approach. Predicted stress-strain responses up to failure and damage accumulations are compared to the experimental results to validate the model.

  7. Stemcell Information: SKIP000173 [SKIP Stemcell Database[Archive

    Lifescience Database Archive (English)

    Full Text Available SKIP000173 ... Diseased CiRA188Ai-M1 CiRA188Ai-M1 HPS0119 HPS0119 CINCA症候群 ... CINCA syndrome... 607115 ... -- Male ... Yes No iPSC from CINCA syndrome patient with mutaion 919G >A (G307S) in.../lab/cell/detail.cgi?cell_no=HPS0119&type=1 ... 22723549 10.1182/blood-2012-03-417881 Induced pluripotent stem cells from CINCA syndr... NLRP3 as somatic mosaicism|Riken BRC:HPS0119 疾患特異的iPS細胞株。慢性乳児神経皮膚関節炎症候群(CINCA症候群)患者由来。HPS0120と同一人由来。 human ...ome patients as a model for dissecting somatic mosaicism and drug discovery Tanaka

  8. Stemcell Information: SKIP000174 [SKIP Stemcell Database[Archive

    Lifescience Database Archive (English)

    Full Text Available SKIP000174 ... Diseased CiRA188Ai-W1 CiRA188Ai-W1 HPS0120 HPS0120 CINCA症候群 ... CINCA syndrome... 607115 ... -- Male ... Yes No iPSC from CINCA syndrome patient with mutaion 919G>A ... (G307S) in.../lab/cell/detail.cgi?cell_no=HPS0120&type=1 ... 22723549 10.1182/blood-2012-03-417881 Induced pluripotent stem cells from CINCA syndr... NLRP3 as somatic mosaicism|Riken BRC:HSP0120 疾患特異的iPS細胞株。慢性乳児神経皮膚関節炎症候群(CINCA症候群)患者由来。HPS0119と同一人由来。 human ...ome patients as a model for dissecting somatic mosaicism and drug discovery Tanaka

  9. Development of intelligent Eddy Current Testing (ECT) system for PWR steam generator tube inspection

    International Nuclear Information System (INIS)

    Kawata, K.; Kawase, N.; Kurokawa, M.; Asada, Y.

    2005-01-01

    The intelligent ECT system was developed for the inspection of heat transfer tubes of the steam generator of the PWR plant. It consists of intelligent probe, data acquisition unit and data analysis system. The probe combines 24 channels inclined lay out drive coils and thin film pick-up coils with built-in electric circuits to provide high inspection capability equivalent to rotating coil ECT and high-speed inspection equivalent to conventional bobbin coil ECT. The advanced data analysis system that has filtering and automatic analysis functions is also developed to enable fast and precise analysis of large volume inspection data. The system was qualified by confirmation tests in FY 2003 to show thinned thickness sizing accuracy within ± 5%. (T. Tanaka)

  10. Special issue on cluster algebras in mathematical physics

    Science.gov (United States)

    Di Francesco, Philippe; Gekhtman, Michael; Kuniba, Atsuo; Yamazaki, Masahito

    2014-02-01

    This is a call for contributions to a special issue of Journal of Physics A: Mathematical and Theoretical dedicated to cluster algebras in mathematical physics. Over the ten years since their introduction by Fomin and Zelevinsky, the theory of cluster algebras has witnessed a spectacular growth, first and foremost due to the many links that have been discovered with a wide range of subjects in mathematics and, increasingly, theoretical and mathematical physics. The main motivation of this special issue is to gather together reviews, recent developments and open problems, mainly from a mathematical physics viewpoint, into a single comprehensive issue. We expect that such a special issue will become a valuable reference for the broad scientific community working in mathematical and theoretical physics. The issue will consist of invited review articles and contributed papers containing new results on the interplays of cluster algebras with mathematical physics. Editorial policy The Guest Editors for this issue are Philippe Di Francesco, Michael Gekhtman, Atsuo Kuniba and Masahito Yamazaki. The areas and topics for this issue include, but are not limited to: discrete integrable systems arising from cluster mutations cluster structure on Poisson varieties cluster algebras and soliton interactions cluster positivity conjecture Y-systems in the thermodynamic Bethe ansatz and Zamolodchikov's periodicity conjecture T-system of transfer matrices of integrable lattice models dilogarithm identities in conformal field theory wall crossing in 4d N = 2 supersymmetric gauge theories 4d N = 1 quiver gauge theories described by networks scattering amplitudes of 4d N = 4 theories 3d N = 2 gauge theories described by flat connections on 3-manifolds integrability of dimer/Ising models on graphs. All contributions will be refereed and processed according to the usual procedure of the journal. Guidelines for preparation of contributions The deadline for contributed papers is 31 March

  11. Mapping the Ice Depth of Europa with Ultrahigh Energy Particles

    Science.gov (United States)

    Romero-Wolf, A.; Naudet, C. J.

    2012-12-01

    There has been recent interest in applying radio emission of ultra-high energy neutrinos interacting in the ice of Europa. The idea was first described by Gorham (2004)[1] in the context of ultra-high energy particle detection. Shoji, Kurita, and Tanaka (2011)[2] proposed a technique for measuring ice depth using the radio intensity distribution of radio impulses emitted by interactions deep in the Europan ice. Miller, Schaefer, and Sequeira (2012)[3] follow up this study with a simulation of a radio detector mission to constrain the ice depth of Europa. The radio signal results from an effect proposed by Askar'yan (1962)[4] where the particle shower induced by the neutrino interaction accumulates a charge excess traveling faster than the speed of light in the medium and produces a coherent Cherenkov pulse at radio frequencies. We evaluate the feasibility of such a mission given the current state of knowledge of ultra-high energy particle detection and radio pulse production. References [1] Gorham (2004), Planet-sized Detectors for Ultra-high Energy Neutrinos & Cosmic Rays, NASA Advanced Planning Office's Capability Roadmap Public Workshop, Nov. 30, 2004, astro-ph/0411510 [2] Shoji, Kurita, and Tanaka (2011), Constraint of Europan ice thickness by measuring electromagnetic emissions induced by neutrino interaction, Geophysical Research Letters, 38, L08202 [3] Miller, Shaefer, Sequeira, PRIDE (Passive Radio [frequency] Ice Depth Experiment): An instrument to passively measure ice depth from a Europan orbiter using neutrinos, Icarus 220 877-888 [4] Askar'yan (1962), Excess negative charge of an electron photon shower and its coherent radiation originating from it. Radio recording of showers under the ground and on the Moon, Sov. Phys. JETP, 14, 441-443.

  12. Prediction of the size of unerupted canines and premolars in an Iranian population

    Directory of Open Access Journals (Sweden)

    Mashaallah Khanehmasjedi

    2013-01-01

    Full Text Available Background and Aim: One of the important aspects of diagnosis and treatment planning in the mixed dentition is estimation of the size of unerupted permanent canines and premolars. One of the most commonly used the prediction methods are Tanaka and Johnston, which are based on data from a sample of Northern European descent children. The accuracy of this method when applied to a different ethnic population is questionable. The aim of this study was to determine the modified equations from Tanaka and Johnston for Iranian population. Materials and Methods: This study was an analytic and cross-sectional investigation with the randomized cluster sampling in Ahwaz. Fifty four students of 14-18 years age (32 girls, 22 boys were selected between 320 students and plaster models of their maxillary and mandibular arches were prepared. Subjects had fully erupted teeth, class I canine and molar relationship and presented no proximal caries or fillings, morphological anomalies, missing teeth or occlusal abrasion, and bruxism. The mesiodistal crown diameters of the permanent teeth were measured with using the sharpened boley gauge (accuracy 0.01 mm. The data were analyzed by using the regression correlation analyses and t-test. Results: The size of permanent canines and premolars were larger in maxilla than mandible and males than females. These values in Iran were different from other countries. Conclusion: In this study to predict the space (in mm required for alignment of unerupted canine and premolars in Iranian children, halve the sum of mesiodistal dimension of the four mandibular incisors and add the respective constants 10.5 for upper jaw and 10 for lower jaw.

  13. Five-year follow-up of treatment outcomes in patients with early-stage breast cancer and clinically negative axillary nodes treated with no lymph node dissection or axillary clearance

    Directory of Open Access Journals (Sweden)

    Yamamoto D

    2012-08-01

    Full Text Available Daigo Yamamoto,1 Kanji Tanaka,2 Yu T subota,1 Noriko Sueoka,1 Tetsuji Shoji,3 Kayoko Kuwana,1 A-Hon Kwon11Department of Surgery, Kansai Medical University, Hirakata, 2Ribon-Rose Tanaka Kanji Breast Clinic, 3Shoji Clinic, Osaka, JapanBackground: Sentinel lymph node biopsy has steadily replaced axillary lymph node dissection (ALND for staging clinically node-negative breast cancer. However, ALND remains standard management of the axilla when a tumor-positive sentinel lymph node is identified.Methods: We identified 460 patients with breast cancer (clinically T1/T2N0M0 from the database for 1999–2004. Patient age ranged from 26 to 81 (median 50 years. Patients who underwent mastectomy or breast-conserving surgery with or without ALND were compared for regional recurrence, disease-free survival, and overall survival.Results: Patients with ALND (n = 308 were compared with the no ALND group (n = 152. Five-year overall survival and disease-free survival were not significantly different between the two groups, while there was a significant difference between them for regional recurrence. Of the 152 patients who did not undergo axillary dissection, four developed ipsilateral axillary disease, most of whom were rescued by delayed axillary dissection. Further, the criterion for identifying lymphedema was used, ie, a 2 cm circumferential change at any measured location. As a result, the incidence of lymphedema in the ALND group was 12.7%, while it was not seen in the non ALND group.Conclusion: There is a possibility that ALND may be omitted for cT1/T2N0M0 breast cancer through a combination of hormone therapy and adjuvant chemotherapy.Keywords: breast cancer, axillary lymph node dissection

  14. Estimated amount of 24-hour urine sodium excretion is positively correlated with stomach and breast cancer prevalence in Korea.

    Science.gov (United States)

    Park, Jung Hwan; Kim, Yong Chul; Koo, Ho Seok; Oh, Se Won; Kim, Suhnggwon; Chin, Ho Jun

    2014-09-01

    Stomach cancer is one of the most common cancers in Korea. The aim of this study was to identify the association between the prevalence of cancer, particularly stomach cancer, and the amount of 24-hr urine sodium excretion estimated from spot urine specimens. The study included 19,083 subjects who took part in the Korean National Health and Nutritional Examination Survey between 2009 and 2011. The total amount of urine sodium excreted in a 24-hr period was estimated by using two equations based on the values for spot urine sodium and creatinine. In subjects who had an estimated 24-hr urine sodium excretion of more than two standard deviations above the mean (group 2), the prevalence of stomach cancer was higher than in subjects with lower 24-hr sodium excretion (group 1). By using the Tanaka equation to estimate it, the prevalence of stomach cancer was 0.6% (114/18,331) in group 1, whereas it was 1.6% (9/568) in group 2 (P=0.006). By using the Korean equation, the prevalence was 0.6% (115/18,392) in group 1, and 1.6% in group 2 (8/507) (P=0.010). By using the Tanaka equation, breast cancer in women is more prevalent in group 2 (1.9%, 6/324) than group 1 (0.8%, 78/9,985, P=0.039). Higher salt intake, as defined by the estimated amount of 24-hr urine sodium excretion, is positively correlated with a higher prevalence of stomach or breast cancer in the Korean population.

  15. Constitutive model for shape memory alloys and its use in design and finite element analysis

    Science.gov (United States)

    Bose, Sudip; Santhanam, Sridhar

    2002-07-01

    A constitutive model for predicting the thermomechanical behavior of Shape Memory Alloys (SMAs) has been developed and validated. The model uses an approach similar to Brinson, Liang and Rogers, and Tanaka. It links key thermomechanical variables: stress, strain, temperature, and martensite fraction. A basic differential form for the SMA constitutive behavior, developed by Tanaka, forms the foundation of the model. The model is completed with a definition of the rules governing the behavior of martensite fraction. Like Brinson, the model distinguishes between de-twinned and twinned martensite. The phase transition temperatures are assumed to be a linear function of applied stress. The forward and reverse phase transformations are described by piecewise exponential functions. There are a number of parameters in the model that need to be determined using experimental data. The critical transformation temperatures are determined by resistivity measurements. All other parameters are determined by mechanical tension testing followed by nonlinear least-squares estimations. Mechanical testing consisted of displacement controlled, tension tests on Nitinol wires at several temperatures. The effectiveness of this model is demonstrated by its use in the design of an SMA actuated robotic arm. The constitutive model is used in conjunction with a lumped heat transfer model, a kinematic model, and a dynamic model to predict the behavior of the arm. Comparison between predictions and experimentally observed behavior is very good indicating a sound constitutive model. The model is also built into a finite element code that simulates pseudoelastic SMA behavior. The code considers geometric and material nonlinearities. The behavior of a simple pseudoelastic device is shown to be well predicted by the finite element code.

  16. Shedding Light on the Cosmic Skeleton

    Science.gov (United States)

    2009-11-01

    Astronomers have tracked down a gigantic, previously unknown assembly of galaxies located almost seven billion light-years away from us. The discovery, made possible by combining two of the most powerful ground-based telescopes in the world, is the first observation of such a prominent galaxy structure in the distant Universe, providing further insight into the cosmic web and how it formed. "Matter is not distributed uniformly in the Universe," says Masayuki Tanaka from ESO, who led the new study. "In our cosmic vicinity, stars form in galaxies and galaxies usually form groups and clusters of galaxies. The most widely accepted cosmological theories predict that matter also clumps on a larger scale in the so-called 'cosmic web', in which galaxies, embedded in filaments stretching between voids, create a gigantic wispy structure." These filaments are millions of light years long and constitute the skeleton of the Universe: galaxies gather around them, and immense galaxy clusters form at their intersections, lurking like giant spiders waiting for more matter to digest. Scientists are struggling to determine how they swirl into existence. Although massive filamentary structures have been often observed at relatively small distances from us, solid proof of their existence in the more distant Universe has been lacking until now. The team led by Tanaka discovered a large structure around a distant cluster of galaxies in images they obtained earlier. They have now used two major ground-based telescopes to study this structure in greater detail, measuring the distances from Earth of over 150 galaxies, and, hence, obtaining a three-dimensional view of the structure. The spectroscopic observations were performed using the VIMOS instrument on ESO's Very Large Telescope and FOCAS on the Subaru Telescope, operated by the National Astronomical Observatory of Japan. Thanks to these and other observations, the astronomers were able to make a real demographic study of this structure

  17. Measuring quality of sleep and autonomic nervous function in healthy Japanese women

    Directory of Open Access Journals (Sweden)

    Sato M

    2014-01-01

    Full Text Available Miki Sato,1 Yuko Yasuhara,2 Tetsuya Tanioka,2 Yukie Iwasa,2 Masafumi Miyake,3 Toshiyuki Yasui,2 Masahito Tomotake,2 Haruo Kobayashi,4 Rozzano C Locsin51Department of Nursing, Faculty of Nursing, Shikoku University, 2Department of Nursing, Institute of Health Biosciences, The University of Tokushima Graduate School, 3Tokushima Prefectural Minami Health Care Center, Tokushima, 4Faculty of Medical Welfare, Kawasaki University of Medical Welfare, Kurashiki, Japan; 5Christine E Lynn College of Nursing, Florida Atlantic University, Boca Raton, FL, USAAbstract: The purpose of this study was to determine the relationship between quality of sleep and autonomic nervous functioning in healthy adult Japanese women using three measures, namely, the Pittsburgh Sleep Quality Index (PSQI for subjective assessment of sleep quality, actigraphy for objective assessment of sleep, and heart rate variability using high frequency and low frequency domains. Participants were 31 healthy women in their 20s to 40s who met the selection criteria, including having normal monthly menstrual periods. Participants were categorized as good or poor sleepers according to their PSQI score. Median correlation coefficients of activity count and high frequency were −0.62 (range −0.43 to −0.84 for good sleepers and −0.45 (range 0.003 to −0.64 for poor sleepers. Good sleepers showed a significantly higher correlation of activity count and high frequency (Z=−2.11, P<0.05. Median correlation coefficients of activity count and low frequency/high frequency were 0.54 (range 0.29–0.73 for good sleepers and 0.41 (range 0.11–0.63 for poor sleepers. The PSQI, actigraphy data, and heart rate variability results showed positive correlations between sleep time as measured by PSQI and duration of inactivity as measured by actigraphy (r=0.446, P<0.05 and sleep time as measured by actigraphy (r=0.377, P<0.05, and a negative correlation between sleep time as measured by PSQI and the

  18. Abstracts of the Annual Meeting of Planetary Geologic Mappers, Tucson, AZ 2007

    Science.gov (United States)

    Gregg, Tracy K.P.; Tanaka, Kenneth L.; Saunders, R. Stephen; Bleamaster, Leslie F.

    2007-01-01

    Introduction Report of the Annual Mappers Meeting Planetary Science Institute Tucson, Arizona June 28 and 29, 2007 Approximately 22 people attended this year's mappers meeting, and many more submitted abstracts and maps in absentia. The 2007 meeting was convened by Tracy Gregg, Les Bleamaster, Steve Saunders, and Ken Tanaka and was hosted by David Crown and Les Bleamaster of the Planetary Science Institute (PSI) in Tucson, Arizona. Oral presentations and poster discussions took place on Thursday, June 28 and Friday, June 29. This year's meeting also included a unique opportunity to visit the operations centers of two active Mars missions; field trips to the University of Arizona took place on Thursday and Friday afternoons. Outgoing Geologic Mapping Subcommittee (GEMS) chairperson, Tracy Gregg, commenced the meeting with an introduction and David Crown followed with a discussion of logistics and the PSI facility; Steve Saunders (Planetary Geology and Geophysics Discipline Scientist) then provided a brief program update. Science presentations kicked off with Venus mapper Vicki Hansen and graduate students Eric Tharalson and Bhairavi Shankar of the University of Minnesota, Duluth, showing a 3-D animation of the global distribution of tesserae and discussing the implications, a progress report for V-45 quadrangle mapping, and a brief discussion of circular lows. Les Bleamaster (PSI) followed with a progress report on mapping of the V-50 quadrangle and the 1:10M Helen Planitia quadrangle. David Crown (PSI) concluded the Venus presentations with a discussion of progress made on the V-30 quadrangle. The remainder of Thursday's presentations jumped around the Solar System including Mars, Io, and Earth. Ken Tanaka of the U.S. Geological Survey (USGS) began the afternoon with a general discussion of the status of the planetary mapping program at USGS. Buck Janes (University of Arizona) provided background information about the Mars Odyssey Gamma Ray Spectrometer (GRS) and

  19. Vigor, produtividade e qualidade de frutos de quatro tangerineiras e híbridos sobre quatro porta-enxertos Vegetative growth, yield and fruit quality of four mandarin and hybrid cultivars on four rootstocks

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    Eduardo Sanches Stuchi

    2008-09-01

    Full Text Available Avaliaram-se o desenvolvimento vegetativo, a produção e a qualidade de frutos das cultivares-copa 'Swatow' (Citrus reticulata Blanco, 'Ellendale' [C. reticulata x C. sinensis (L. Osbeck], 'Fortune' (C. clementina hort. ex Tanaka x C. tangerina hort. ex Tanaka e 'Nova' [C. clementina x (C. paradisi Macfad. x C. reticulata] sobre limoeiro 'Cravo' (C. limonia Osbeck, citrumeleiro 'Swingle' (C. paradisi x P. trifoliata (L. Raf., tangelereiro 'Orlando' (C. reticulata x C. paradisi e tangerineira 'Cleópatra' (C. reshni hort. ex Tanaka, de 2000 a 2006. O experimento foi instalado em Bebedouro-SP, em outubro de 1997. As variáveis analisadas foram: produção anual e produção acumulada de todas as cultivares para todos os anos (2000 a 2006, qualidade de frutos em 2005 e 2006 (massa, sólidos solúveis totais, acidez total, ratio, volume da copa, diâmetro do tronco da copa, eficiência de produção (Kg frutos/m³ copa e índice de alternância de produção. A produção acumulada e a qualidade de frutos das cultivares testadas não foram influenciadas pelos porta-enxertos. O citrumelo 'Swingle' induziu menor porte às plantas das cultivares-copa. O tangelo 'Nova' apresentou características adequadas à comercialização in natura. A tangerineira 'Swatow' produziu frutos de qualidade semelhante aos de tangerineira 'Ponkan'. O tangor 'Ellendale' e a tangerineira 'Fortune' apresentaram produção de frutos baixa e irregular.Plant growth, yield, and fruit quality of 'Swatow' (Citrus reticulata Blanco, 'Ellendale' (C. reticulata x Citrus sinensis L. Osbeck, 'Fortune' (Citrus clementina Hort. ex Tan. x Citrus tangerina Hort. ex Tan. e 'Nova' [(C. clementina x (Citrus paradisi Macf. x C. reticulata] mandarins budded on 'Rangpur' lime (C. limonia Osbeck, 'Swingle' citrumelo (P. trifoliata Raf. x C. paradisi Macf., 'Orlando' tangelo (C. reticulata Blanco x C. paradisi Macf., and 'Cleopatra' mandarin (Citrus reshni Hort. ex Tan. were evaluated, from 2000

  20. Melhoramento do limoeiro-taiti por seleção de clones Tahiti lime breeding through clonal selection

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    J. O. Figueiredo

    1976-01-01

    Full Text Available Neste trabalho são relatados os resultados de produção e vigor das plantas em um experimento de competição de seis clones de limoeiro-taiti (Citrus latifolia Tanaka enxertados no porta-enxerto limoeiro-cravo (Citrus limonia Osbeck. Os resultados de seis anos consecutivos mostraram que o clone IAC 5 foi o mais produtivo superando, em média, todos os outros nas colheitas de janeiro, julho e outubro. Em segundo lugar colocou-se o IAC 2, cuja produção máxima se localizou, porém, no mês de abril, quando os preços do mercado são os mais baixos. O IAC 6 foi inferior a todos. Os clones IAC 1, IAC 3 e IAC 4, comportaram-se de maneira intermediária e a distribuição da produção do IAC 1 foi a mais favorável. O clone IAC 5 foi também o mais vigoroso e não apresentou fissuras na casca do tronco e dos ramos. IAC 2 foi o clone de menor vigor e juntamente com IAC 1 e IAC 6, o mais suscetível à incidência de fissuras.Six selected clones of Tahiti lime (Citrus latifolia Tanaka were evaluated in a field trial at the Estação Experimental de Limeira for fruit production and plant vigor, during six consecutive years. All six clones had the Rangpur lime (Citrus limonia Osbeck as rootstock. The relationship between monthly fruit price and seasonal yield data was also investigated. The clone IAC 5 showed the highest yield in January, July, and October when Tahiti lime price is maximum. This selection had the most vigorous plants with absence of cracks in the bark of the trunk and branches. The least vigorous material was the IAC 2 selection with a top yield in April, when fruit price is minimum. The clones IAC 1, IAC 3, and IAC 4 showed intermediate production while IAC 6 revealed the lowest yield.

  1. Performance of ‘Okitsu’ satsuma mandarin trees on different rootstocks in Northwestern Parana State

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    Zuleide Hissano Tazima

    2014-10-01

    Full Text Available In the State of Paraná, citrus production is based mainly on Rangpur lime rootstock, which has good results with the established cultivars. However, research is needed into rootstocks for use with cultivars that remain to be commercially exploited. The objective of this study was to evaluate the vegetative development and yield of ‘Okitsu’ satsuma mandarin plants (Citrus unshiu Marc., as well as fruit quality, budded on nine rootstocks in the Northwest State of Paraná, Brazil. The orchard was established at the Experimental Station of the Agronomic Institute of Paraná-IAPAR, Paranavaí, PR, in January 2001. The experimental design was randomized blocks with nine treatments, three replications, and two plants per plot. The rootstocks were Rangpur lime (Citrus limonia Osb., Cleopatra mandarin (Citrus reshni hort. ex Tanaka, C-13 citrange [Citrus sinensis × Poncirus trifoliata orange (L. Raf.], Volkamer lemon (Citrus volkameriana V. Ten. e Pasq., Carrizo citrange [C. sinensis × P. trifoliata (L. Raf.], Sunki mandarin (Citrus sunki hort. ex Tanaka, trifoliate orange [P. trifoliata (L. Raf. ], Swingle citrumelo [Citrus paradisi Macfad. cv. Duncan × P. trifoliata (L. Raf.], and Caipira DAC sweet orange [C. sinensis (L. Osb.]. The largest plant canopy to ‘Okitsu’ was induced by Cleopatra and the lowest by trifoliata, with 37.1 m3 and 9.9 m3, respectively. The highest relationship between scion and rootstock trunk diameter was observed for the plants budded on Swingle. The largest accumulated yields per plant over eight seasons were induced by Volkamer, Rangpur, Caipira DAC, Cleopatra, and Carrizo, ranging from 867.3 to 989.6 kg. These rootstocks also induced the largest fruit mass, along with Sunki, ranging from 173.3 to 188.0 g. Trifoliate induced accumulated production of 52.5% in relation to Rangpur lime. Rangpur, Carrizo, trifoliate, and Swingle induced the largest averages for the ratio, ranging from 10.41 to 10.79. For orchard

  2. 'Valencia' sweet orange tree flowering evaluation under field conditions Avaliação do florescimento de laranjeiras valência em condição de campo

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    Rafael Vasconcelos Ribeiro

    2008-01-01

    Full Text Available Since citrus flowering is a key process in citriculture and its evaluation is often difficult due to the canopy structure and field sampling, the aim of this research was to give some directions regarding the evaluation of flowering in field-grown sweet orange plants. This study was conducted in a citrus orchard of sweet orange plants cv. 'Valencia' [Citrus sinensis (L. Osbeck] grafted on 'Cleopatra' mandarin (Citrus reshni hort. ex Tanaka or 'Rangpur' lime (Citrus limonia Osbeck rootstocks, with North-South orientation. Generative structures [buds, flowers and fruitlets (diameter O florescimento dos citros é um processo chave na citricultura e sua avaliação é dificultada devido à estrutura da copa e amostragem em campo. O objetivo desse artigo foi fornecer algumas indicações de como avaliar o florescimento de laranjeiras em condição de campo. Esse estudo foi conduzido em um pomar de laranjeiras 'Valência' [Citrus sinensis (L. Osbeck] enxertadas em tangerineira 'Cleópatra' (Citrus reshni hort. ex Tanaka ou limoeiro 'Cravo' (Citrus limonia Osbeck, com orientação Norte-Sul. As estruturas reprodutivas [botões florais, flores e frutos (diâmetro < 3 cm] foram quantificadas semanalmente entre agosto e novembro de 2005, utilizando guias de 1 m² posicionadas no terço médio da copa das plantas, amostrando aproximadamente um volume de 1 m³. As guias foram divididas em duas partes para que duas pessoas pudessem realizar as avaliações, e posicionadas nas orientações sudeste, sudoeste, nordeste e noroeste, em sete plantas. Alguns aspectos do florescimento dos citros foram avaliados: (i quantas plantas são necessárias para uma amostragem representativa do florescimento; (ii em qual orientação deve ser feita a medida e (iii qual volume da copa das plantas que deve ser amostrado. Ao se considerar os aspectos práticos da produção dos citros, um método rápido, simples e representativo é necessário para avaliar o florescimento

  3. Long-term histological comparison between near-infrared irradiated skin and scar tissues

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    Yohei Tanaka

    2010-11-01

    Full Text Available Yohei Tanaka1,2, Kiyoshi Matsuo1, Shunsuke Yuzuriha11Department of Plastic and Reconstructive Surgery, Shinshu University School of Medicine, Matsumoto, Japan; 2Clinica Tanaka Plastic and Reconstructive Surgery and Anti-aging Center, Matsumoto, JapanBackground and objective: Our previous histological studies indicated that near-infrared (NIR irradiation stimulates collagen proliferation in rat and human skin for 3 months. High collagen density in the dermis and smoothing of the epidermis were observed in irradiated rat skin, and appeared to last up to 6 months. Epidermal smoothness in irradiated rat skin seems to resemble scarring. Here, we performed a long-term histological comparison between NIR (1100 to 1800 nm irradiated skin and scar tissues.Materials and methods: Rat skin was irradiated using a NIR device. Scar tissues were harvested from wounded areas and were compared with irradiated skin. Histological changes up to 180 days post-treatment were evaluated with hematoxylin and eosin, Azan-Mallory staining, and collagen type I and III staining.Results: In nonirradiated control skin, the dermis showed a low density of type I and III collagen, the surface of the epidermis was rough, and no significant changes were observed over time. In irradiated skin, both type I and III collagen increased significantly, and persisted up to 180 days. The density of type I collagen was significantly higher than that of type III collagen, whereas type I and III collagen of the control group did not differ significantly. Epidermis was thickened for 30 days, and epidermal smoothness persisted up to 180 days. In scar tissues, the density of type III collagen was higher than that of type I collagen. The number of fibroblasts remained high and the glial fibrils were dense until 180 days after injury compared with irradiated skin. Significant increases in both type I and III collagen and epidermal flattering persisted until 180 days.Conclusions: NIR irradiation

  4. Initial horticultural performance of nine ‘Persian’ lime selections grafted onto Swingle citrumelo

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    Magno Guimarães Santos

    2016-04-01

    Full Text Available ABSTRACT ‘Persian’ lime (PL [Citrus latifolia (Yu. Tanaka Tanaka] is an important species both for domestic fresh fruit consumption in Brazil as well as the export market, since the country is one of the largest producers in the world despite the fact that, in commercial plantations, it is still not uncommon to find trees with low productivity and high plant vigor of unknown origin. Selections of Persian lime ‘CNPMF–2000’, ‘CNPMF–2001’, ‘CNPMF–01’, ‘CNPMF–02’, ‘IAC–5’, ‘IAC–5.1’, ‘Bearss’, ‘Persian–58’, and ‘5059’, were therefore grafted onto Swingle citrumelo [C. paradisi Macfad. cv. Duncan × Poncirus trifoliata (L. Raf.] rootstocks and evaluated in Cruz das Almas, Bahia, Brazil in a field experiment conducted in a completely randomized block design with five replications and two trees per plot. The biometric attributes (canopy height, diameter and volume, yield parameters (yield during the off-season harvest period, yield per plant, production efficiency, and fruit quality traits, were evaluated. The ‘CNPMF–2001’, ‘CNPMF–01’, ‘CNPMF–02’, ‘IAC–5’, and ‘Bearss’ selections had 5-11 % shorter trees than the other cultivars. ‘CNPMF–01’, ‘CNPMF–02’, ‘Persian–58’, and ‘5059’ presented higher yield efficiency values, between 3.1-3.4 kg m−3, and higher yield levels during the off-season harvest periods. The ‘Bearss’, ‘Persian–58’, ‘CNPMF–2000’, ‘IAC–5.1’ and ‘5059’ selections had more acid fruits and the latter three, smaller fruits. Based on their horticultural performance up to eight years of age, ‘CNPMF–01’, ‘CNPMF–02’, ‘Persian–58’ and ‘5059’ selections were the most promising varieties of Persian lime.

  5. Upregulated epidermal growth factor receptor expression following near-infrared irradiation simulating solar radiation in a three-dimensional reconstructed human corneal epithelial tissue culture model

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    Tanaka Y

    2016-08-01

    Full Text Available Yohei Tanaka,1,2 Jun Nakayama2 1Department of Plastic Surgery, Clinica Tanaka Plastic, Reconstructive Surgery and Anti-aging Center, 2Department of Molecular Pathology, Shinshu University Graduate School of Medicine, Matsumoto, Nagano, Japan Background and objective: Humans are increasingly exposed to near-infrared (NIR radiation from both natural (eg, solar and artificial (eg, electrical appliances sources. Although the biological effects of sun and ultraviolet (UV exposure have been extensively investigated, the biological effect of NIR radiation is still unclear. We previously reported that NIR as well as UV induces photoaging and standard UV-blocking materials, such as sunglasses, do not sufficiently block NIR. The objective of this study was to investigate changes in gene expression in three-dimensional reconstructed corneal epithelial tissue culture exposed to broad-spectrum NIR irradiation to simulate solar NIR radiation that reaches human tissues.Materials and methods: DNA microarray and quantitative real-time polymerase chain reaction analysis were used to assess gene expression levels in a three-dimensional reconstructed corneal epithelial model composed of normal human corneal epithelial cells exposed to water-filtered broad-spectrum NIR irradiation with a contact cooling (20°C. The water-filter allowed 1,000–1,800 nm wavelengths and excluded 1,400–1,500 nm wavelengths.Results: A DNA microarray with >62,000 different probes showed 25 and 150 genes that were up- or downregulated by at least fourfold and twofold, respectively, after NIR irradiation. In particular, epidermal growth factor receptor (EGFR was upregulated by 19.4-fold relative to control cells. Quantitative real-time polymerase chain reaction analysis revealed that two variants of EGFR in human corneal epithelial tissue were also significantly upregulated after five rounds of 10 J/cm2 irradiation (P<0.05.Conclusion: We found that NIR irradiation induced the

  6. Value of systematic intervention for chronic obstructive pulmonary disease in a regional Japanese city based on case detection rate and medical cost

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    Tawara Y

    2015-08-01

    Full Text Available Yuichi Tawara,1 Hideaki Senjyu,1 Kenichiro Tanaka,1 Takako Tanaka,1 Masaharu Asai,1 Ryo Kozu,2 Mitsuru Tabusadani,3 Sumihisa Honda,1 Terumitsu Sawai1 1Department of Cardiopulmonary Rehabilitation Science, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan; 2Department of Rehabilitation Medicine, Nagasaki University Hospital, Nagasaki, Japan; 3Center for Industry, University and Government Cooperation, Nagasaki University, Nagasaki, Japan Objective: We established a COPD taskforce for early detection, diagnosis, treatment, and intervention. We implemented a pilot intervention with a prospective and longitudinal design in a regional city. This study evaluates the usefulness of the COPD taskforce and intervention based on COPD case detection rate and per capita medical costs.Method: We distributed a questionnaire to all 8,878 inhabitants aged 50–89 years, resident in Matsuura, Nagasaki Prefecture in 2006. Potentially COPD-positive persons received a pulmonary function test and diagnosis. We implemented ongoing detection, examination, education, and treatment interventions, performed follow-up examinations or respiratory lessons yearly, and supported the health maintenance of each patient. We compared COPD medical costs in Matsuura and in the rest of Nagasaki Prefecture using data from 2004 to 2013 recorded by the association of Nagasaki National Health Insurance Organization, assessing 10-year means and annual change.Results: As of 2014, 256 people have received a definitive diagnosis of COPD; representing 31% of the estimated total number of COPD patients. Of the cases detected, 87.5% were mild or moderate in severity. COPD medical costs per patient in Matsuura were significantly lower than the rest of Nagasaki Prefecture, as was rate of increase in cost over time.Conclusion: The COPD program in Matsuura enabled early detection and treatment of COPD patients and helped to lower the associated burden of medical costs. The

  7. Objective assessment of skin tightening in Asians using a water-filtered near-infrared (1,000–1,800 nm device with contact-cooling and freezer-stored gel

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    Tanaka Y

    2013-06-01

    Full Text Available Yohei Tanaka,1–3 Yuichiro Tsunemi,2 Makoto Kawashima,2 Naoto Tatewaki,3 Hiroshi Nishida31Clinica Tanaka Plastic, Reconstructive Surgery and Anti-aging Center, Nagano, 2Department of Dermatology, Tokyo Women's Medical University, Tokyo, 3Department of Applied Life Sciences, Niigata University of Pharmacy and Applied Life Sciences, Niigata, JapanBackground: Near-infrared has been shown to penetrate deeper than optical light sources independent of skin color, allowing safer treatment for the Asian skin type. Many studies have indicated the efficacy of various types of devices, but have not included a sufficiently objective evaluation. In this study, we used three-dimensional imaging for objective evaluation of facial skin tightening using a water-filtered near-infrared device.Methods: Twenty Japanese patients were treated with the water-filtered near-infrared (1,000–1,800 nm device using a contact-cooling and nonfreezing gel stored in a freezer. Three-dimensional imaging was performed, and quantitative volume measurements were taken to evaluate the change in post-treatment volume. The patients then provided their subjective assessments.Results: Objective assessments of the treated cheek volume evaluated by a three-dimensional color schematic representation with quantitative volume measurements showed significant improvement 3 months after treatment. The mean volume reduction at the last post-treatment visit was 2.554 ± 0.999 mL. The post-treatment volume was significantly reduced compared with the pretreatment volume in all patients (P < 0.0001. Eighty-five percent of patients reported satisfaction with the improvement of skin laxity, and 80% of patients reported satisfaction with improvement of rhytids, such as the nasolabial folds. Side effects, such as epidermal burns and scar formation, were not observed throughout the study.Conclusion: The advantages of this water-filtered near-infrared treatment are its high efficacy for skin tightening

  8. Progress in the Rotational Analysis of the Ground and Low-Lying Vibrationally Excited States of Malonaldehyde

    Science.gov (United States)

    Goudreau, E. S.; Tokaryk, Dennis W.; Ross, Stephen Cary; Billinghurst, Brant E.

    2016-06-01

    Despite being an important prototype molecule for intramolecular proton tunnelling, the far-IR spectrum of the internally hydrogen-bonded species malonaldehyde (C_3O_2H_4) is not yet well understood. In the talk I gave at the ISMS meeting in 2015 I discussed the high-resolution spectra we obtained at the Canadian Light Source synchrotron in Saskatoon, Saskatchewan. These spectra include a number of fundamental vibrational bands in the 100-2000 cm-1 region. In our efforts to analyze these bands we have noticed that our ground state combination differences show a large drift (up to an order of magnitude larger than our experimental error) away from those calculated using constants established by Baba et al., particularly in regions of high J (above 30) and low Ka (below 5). An examination of the previous microwave and far-IR studies reveals that this region of J-Ka space was not represented in the lines that Baba et al. used to generate the values for their fitting parameters. By including our own measurements in the fitting, we were able to improve the characterization of the ground state so that it is now consistent with all of the existing data. This characterization now covers a much larger range of J-Ka space and has enabled us to make significant progress in analyzing our far-IR synchrotron spectra. These include an excited vibrational state at 241 cm-1 as well as several states split by the tunnelling effect at higher wavenumber. T. Baba, T. Tanaka, I. Morino, K. M. T. Yamada, K. Tanaka. Detection of the tunneling-rotation transitions of malonaldehyde in the submillimeter-wave region. J. Chem. Phys., 110. 4131-4133 (1999) P. Turner, S. L. Baughcum, S. L. Coy, Z. Smith. Microwave Spectroscopic Study of Malonaldehyde. 4. Vibration-Rotation Interaction in Parent Species. J. Am. Chem. Soc., 106. 2265-2267 (1984) D. W. Firth, K. Beyer, M. A. Dvorak, S. W. Reeve, A. Grushow, K. R. Leopold. Tunable far-infrared spectroscopy of malonaldehyde. J. Chem. Phys., 94. 1812

  9. Membedah Relevansi dalam Iklan “WRP”

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    Neneng Nurjanah

    2016-12-01

    Full Text Available Abstract: According to Sperber and Wilson, communication in advertisement is ostensive-inferential communication. This communication needs contextual effect and ostensive stimulus which was known to listener's (market segmentation. In WRP 6 day diet pack ad, advertising agency employs some contextual effect and ostensive stimulus to make listener interested and wanted to buy the product. To explore about the communication in WRP 6 day diet pack ad, this paper employs pragmatics method, especially relevance theory. Tanaka says that relevance theory serve comprehensive account to investigate speeches in order to get speaker meaning. The result of this research is advertising agency (speaker addressed this ad to middle high class women as market segmentation (listener. Advertising agency also employed some contextual effect such as body discourse, health discourse, and others diet program and also employed ostensive stimulus such as color and font size to make high relevance speech. Keywords: ostensive-inferencial communication; ostensive stimulus; constectual effect; theory of relevance Abstrak: Komunikasi dalam iklan menurut Sperber dan Wilson merupakan komunikasi ostensif-inferensial yang melibatkan efek kontekstual dan stimulus ostensive diketahui oleh kawan tuturnya (pangsa pasar. Begitu pula dengan iklan WRP 6 day diet pack, agensi iklan memanfaatkan efek kontekstual yang berada dalam benak pangsa pasarnya agar mereka tertarik dan membeli produk tersebut. Untuk mengeksplorasi bentuk komunikasi dalam iklan WRP 6 day diet pack, artikel ini memanfaatkan pendekatan pragmatik, khususnya teori relevansi. Teori relevansi menurut Tanaka menyediakan catatan yang paling komprehensif dalam menyelidiki tuturan berdasarkan makna penutur. Tujuan penelitian ini untuk menyelisik relevansi iklan WRP 6 day diet pack. Adapun temuan yang diperoleh dari artikel ini adalah agensi iklan WRP 6 day diet pack menujukkan iklan tersebut kepada perempuan dewasa dari

  10. Anatomy of a lava dome using muon radiography and electrical resistivity tomography

    Science.gov (United States)

    Lenat, J.

    2011-12-01

    For the TOMUVOL Collaboration Previous works (e.g. Tanaka et al., 2008) have demonstrated the capacity of muon radiography techniques to image the internal structure of volcanoes. The method is based on the attenuation of the flux of high energy atmospheric muons through a volcanic edifice, which is measured by a muon telescope installed at some distance from the volcano. The telescope is composed of three parallel matrices of detectors in order to record the angle of incidence of the muons. The aperture of the telescope and its resolution are determined by the distance between the matrices, their surface and their segmentation. TOMUVOL is a project, involving astroparticle and particle physicists and volcanologists, aimed at developing muon tomography of volcanoes. The ultimate goal is to construct autonomous, portable, remote controlled muon telescopes to study and monitor active volcanoes. A first experiment has been carried out on a large, 11000-year-old, trachytic dome, the Puy de Dôme, located in the French Central Massif. The telescope system is derived from particle physics experiments. The sensors are glass resistive plate chambers. The telescope has two 1 m2 and one 1/6 m2 planes. It is located 2 km away from the summit of Puy de Dôme (elevation 1465 m), at 868 m in elevation, Signals have been accumulated during several months. A high resolution LiDAR digital terrain model has been used in computing a density model of the dome, averaged along the path of the muons through the dome. In parallel, an electrical resistivity section of the dome has been obtained using a long (2.2 km) line of electrodes. The internal structure of the dome is thus described with two physical parameters (density and resistivity). This allows us to analyse jointly the results of the two types of measurements. At the time of writing, a new muon radiography campaign is being carried out from a different viewpoint. This is the first step towards a tomographic image of the volcano

  11. Bedrock topography beneath uppermost part of Aletsch glacier, Central Swiss Alps, revealed from cosmic-ray muon radiography

    Science.gov (United States)

    Nishiyama, Ryuichi; Ariga, Akitaka; Ariga, Tomoko; Käser, Samuel; Lechmann, Alessandro; Mair, David; Scampoli, Paola; Vladymyrov, Mykhailo; Ereditato, Antonio; Schlunegger, Fritz

    2017-04-01

    In mountainous landscapes such as the Central Alps of Europe, the bedrock topography is one of the most interesting subjects of study since it separates the geological substratum (bedrock) from the overlying unconsolidated units (ice). The geometry of the bedrock topography puts a tight constraint on the erosional mechanism of glaciers. In previous studies, it has been inferred mainly from landscapes where glaciers have disappeared after the termination of the last glacial epoch. However, the number of studies with a focus on the structure beneath active glaciers is limited, because existing exploration methods have limitation in resolution and mobility. The Eiger-μ project proposes a new technology, called muon radiography, to investigate the bedrock geometry beneath active glaciers. The muon radiography is a recent technique that relies on the high penetration power of muon components in natural cosmic rays. Specifically, one can resolve the internal density profile of a gigantic object by measuring the attenuation rate of the intensity of muons after passing through it, as in medical X-ray diagnostic. This technique has been applied to many fields such as volcano monitoring (eg. Ambrosino et al., 2015; Jourde et al., 2016; Nishiyama et al., 2016), detection of seismic faults (eg. Tanaka et al., 2011), inspection inside nuclear reactors, etc. The first feasibility test of the Eiger-μ project has been performed at Jungfrau region, Central Swiss Alps, Switzerland. We installed cosmic-ray detectors consisting of emulsion films at three sites along the Jungfrau railway tunnel facing Aletsch glacier (Jungfraufirn). The detectors stayed 47 days in the tunnel and recorded the tracks of muons which passed through the glacier and bedrock (thickness is about 100 m). Successively the films were chemically developed and scanned at University of Bern with microscopes originally developed for the analysis of physics experiments on neutrino oscillation. The analysis of muon

  12. Flavonoids isolated fromCitrus platymammainduced G2/M cell cycle arrest and apoptosis in A549 human lung cancer cells.

    Science.gov (United States)

    Nagappan, Arulkumar; Lee, Ho Jeong; Saralamma, Venu Venkatarame Gowda; Park, Hyeon Soo; Hong, Gyeong Eun; Yumnam, Silvia; Raha, Suchismita; Charles, Shobana Nancy; Shin, Sung Chul; Kim, Eun Hee; Lee, Won Sup; Kim, Gon Sup

    2016-08-01

    Citrus platymamma hort. ex Tanaka belongs to the Rutaceae family and is widely used in folk medicines in Korea due to its anti-proliferative, anti-cancer, anti-oxidant, anti-inflammatory and anti-diabetic activities. However, the molecular mechanism of its anti-cancer effect is not well understood. The present study was conducted to elucidate the anti-cancer effect and molecular mechanism of flavonoids from Citrus platymamma (FCP) on A549 cells. FCP displayed concentration-dependent inhibition on A549 cells proliferation. Further, flow cytometry revealed that FCP significantly increased the sub-G1 (apoptotic cell population) and G2/M phase population, and the total number of apoptotic cells, in a dose-dependent manner. Nuclear condensation and fragmentation were also observed upon staining with Hoechst 33342 in FCP-treated A549 cells. Immunoblotting demonstrated a dose-dependent downregulation of cyclin B1, cyclin-dependent kinase 1, cell division cycle 25c, pro-caspases -3, -6, -8 and -9, and poly (adenosine diphosphate-ribose) polymerase (PARP) in FCP-treated A549 cells. In addition, FCP induced caspase-3 activation and subsequent PARP cleavage, and increased the B-cell lymphoma (Bcl)-2-associated X protein/Bcl-extra large ratio in A549 cells. These findings suggest that FCP induced G2/M arrest and apoptosis of A549 cells. The present study provides evidence that FCP may be useful in the treatment of human lung cancer.

  13. Development of reactor design aid tool using virtual reality technology

    International Nuclear Information System (INIS)

    Mizuguchi, N.; Tamura, Y.; Imagawa, S.; Sagara, A.; Hayashi, T.

    2006-01-01

    A new type of aid system for fusion reactor design, to which the virtual reality (VR) visualization and sonification techniques are applied, is developed. This system provides us with an intuitive interaction environment in the VR space between the observer and the designed objects constructed by the conventional 3D computer-aided design (CAD) system. We have applied the design aid tool to the heliotron-type fusion reactor design activity FFHR2m [A. Sagara, S. Imagawa, O. Mitarai, T. Dolan, T. Tanaka, Y. Kubota, et al., Improved structure and long -life blanket concepts for heliotron reactors, Nucl. Fusion 45 (2005) 258-263] on the virtual reality system CompleXcope [Y. Tamura, A. Kageyama, T. Sato, S. Fujiwara, H. Nakamura, Virtual reality system to visualize and auralize numerical imulation data, Comp. Phys. Comm. 142 (2001) 227-230] of the National Institute for Fusion Science, Japan, and have evaluated its performance. The tool includes the functions of transfer of the observer, translation and scaling of the objects, recording of the operations and the check of interference

  14. Natural habitats uncovered? – Genetic structure of known and newly found localities of the endangered bitterling Pseudorhodeus tanago (Cyprinidae

    Directory of Open Access Journals (Sweden)

    Kenji Saitoh

    2017-03-01

    Full Text Available Overuse of natural resources by humans is a major threat to biodiversity. Overuse often involves species of economic or esthetic value, and fish are a typical example for a group that is exploited both for economic reasons (for human consumption and for esthetic reasons (e.g. by aquarists. Pseudorhodeus tanago (Tanaka, 1909 (formerly known as Tanakia tanago is a small colorful but legally protected (fishing, keeping and transfer are banned bitterling fish distributed around Tokyo, Japan. Whereas it is critically endangered and more and more habitat loss has occurred, at least four stocks have been newly found during the last decade. To explore whether emergence of these newly found habitats is a consequence of incomplete survey, we genotyped mitochondrial cytochrome b sequence of P. tanago from 17 localities and an illegal home aquarium. Populations known by the past extensive survey (13 localities showed geographically structured population genetic characteristics. Population-specific haplotypes were common indicating past divergence and bottleneck events. Four (north, {center + west}, south_1, south_2 or five (north, center, west, south_1, south_2 geographic groups were detectable as for these known localities. On the other hand, newly found stocks were polymorphic and showed identical haplotypes from distant known localities. If we assume historical basis of distribution and genetic characteristics of these newly found stocks, it must be a series of unlikely geological events and haplotype sorting. We discuss potential issues posed by these questionable stocks.

  15. What happened at Fukushima Daiichi Nuclear Power Plants. Verification of effects of earthquake and resulting tsunami

    International Nuclear Information System (INIS)

    Yamazaki, Tatsuhiro

    2012-01-01

    At 14:46 on March 11, 2011, the Tohoku District-off the Pacific Ocean Earthquake occurred. The magnitude of this earthquake was 9.0, the largest in Japan's recorded history, and afterwards enormous tsunami struck the Pacific coast of Tohoku District. This great earthquake and resulting tsunami struck the Fukushima Daiichi Nuclear Power Plants (NPPs) of Tokyo Electric Power Co. (TEPCO), whose cooling function was lost and suffered a severe nuclear accident. This article described the mechanism and safety measure of BWR type NPPs and verified how the great earthquake and resulting tsunami affected NPPs. Progression of the accident at Fukushima Daiichi NPPs was outlined. Damage by the earthquake could not be fully inspected but might not be significant to safety systems. However, the earthquake of longer duration time as much as about 250 sec caused failure of breaker or lightening arrester and also damage on electric facility such as transmission line insulator. Tsunami or inundation height was as high as O.P. (Onahama Pile) +11.5-15.5 m for Unit 1-4 reactor area while designed as O.P. +5.7 m, which caused blackout (power outage) and a reactor core meltdown at Fukushima Daiichi NPPs. (T. Tanaka)

  16. Emergency feature. Great east Japan earthquake disaster Fukushima Daiichi accident

    International Nuclear Information System (INIS)

    Kawata, Tomio; Tsujikura, Yonezo; Kitamura, Toshiro

    2011-01-01

    The Tohoku Pacific Ocean earthquake occurred in March 11, 2011. The disastrous tsunami attacked Fukushima Daiichi nuclear power plants after automatically shutdown by the earthquake and all motor operated pumps became inoperable due to station black out. Despite the strenuous efforts of operators, if caused serious accident such as loss of cooling function, hydrogen explosion and release of large amount of radioactive materials into the environment, leading to nuclear power emergency that ordered resident to evacuate or remain indoors. This emergency feature consisted of four articles. The first was the interview with the president of JAIF (Japan Atomic Industrial Forum) on how to identify the cause of the accident completely, intensify safety assurance measures and promote discussions on a role of nuclear power in the nation's entire energy policy toward the reconstruction. Others were reactor states and events sequence after the accident with trend data of radiation in the reactor site, statement of president of AESJ (Atomic Energy Society of Japan) on nuclear crisis following Tohoku Pacific Ocean earthquake our response and my experience in evacuation life. (T. Tanaka)

  17. Stress test, what is the reality and significance of it?

    International Nuclear Information System (INIS)

    Sawada, Tetsuo

    2012-01-01

    Stress test was introduced in July 2011 by 'political judgment' to demonstrate the ability of nuclear power plants to withstand severe earthquake and tsunami. Stress test consisted of two stages and the first stage using computerized simulation required to obtain 'cliff edge' for earthquake, tsunami, their superposition, loss of all alternating current power and loss of final heat sink, and effectiveness of severe accident management after emergency safety measures. Clearing the first stage of the test was a prerequisite for restarting reactors that had been suspended for regular inspections. NISA had received such test results for 14 nuclear reactors as of January 18, 2012. After passing IAEA's evaluation of stress test review process, NISA's endorsement of test results, NSC's confirmation of NISA's screening results and approval of local government, Prime Minister and relevant ministers concerned would decide whether reactors could be restarted as 'political judgment'. Using ranking list and referring to respective experiences of 14 reactors hit by earthquake and tsunami at the Great East Japan earthquake might better perform comprehensive judgment. (T. Tanaka)

  18. Consecutive collection of new finding and knowledge on science and technology to be reflected to seismic safety assessment for nuclear facilities

    International Nuclear Information System (INIS)

    Tsutsumi, Hideaki; Iijima, Toru

    2013-05-01

    JNES had been collecting and analyzing new finding and knowledge on science and technology to be reflected to seismic safety assessment for nuclear facilities, which was updated so as to develop a system to organize and disseminate such information in response to Nuclear Regulation Authority (NRA)'s policy on new safety regulations requesting enhanced protective measures against extreme natural hazards. The tasks were as follows; (1) collection of new finding and knowledge from seismic safety research of JNES, (2) constructing database of seismic safety research from documents published by committees and including the Great East Japan Earthquake and (3) dissemination of information related to seismic research. As for JFY 2012 activities, collecting and analyzing new finding and knowledge were on three areas such as active fault, seismic source/ground motion and tsunami. 4 theme related with the Great East Japan Earthquake, 7 items not related with the Great East Japan Earthquake and one item on external event were collected and analyzed whether incorporating in seismic safety research important for regulation to increase seismic safety of nuclear facilities, with no such theme confirmed. (T. Tanaka)

  19. Prevent recurrence of nuclear disaster (3). Agenda on nuclear safety from earthquake engineering

    International Nuclear Information System (INIS)

    Kameda, Hiroyuki; Takada, Tsuyoshi; Ebisawa, Katsumi; Nakamura, Susumu

    2012-01-01

    Based on results of activities of committee on seismic safety of nuclear power plants (NPPs) of Japan Association for Earthquake Engineering, which started activities after Chuetsu-oki earthquake and then experienced Great East Japan Earthquake, (under close collaboration with the committee of Atomic Energy Society of Japan started activities simultaneously), and taking account of further development of concept, agenda on nuclear safety were proposed from earthquake engineering. In order to prevent recurrence of nuclear disaster, individual technical issues of earthquake engineering and comprehensive issues of integration technology, multidisciplinary collaboration and establishment of technology governance based on them were of prime importance. This article described important problems to be solved; (1) technical issues and mission of seismic safety of NPPs, (2) decision making based on risk assessment - basis of technical governance, (3) framework of risk, design and regulation - framework of required technology governance, (4) technical issues of earthquake engineering for nuclear safety, (5) role of earthquake engineering in nuclear power risk communication and (6) importance of multidisciplinary collaboration. Responsibility of engineering would be attributed to establishment of technology governance, cultivation of individual technology and integration technology, and social communications. (T. Tanaka)

  20. Teaching of severe accident of Fukushima Daiichi Nuclear Power Plants of Tokyo Electric Power

    International Nuclear Information System (INIS)

    Saito, Shinzo

    2011-01-01

    The Great East Japan Earthquake and accompanied tsunami brought about the severe accident at Fukushima Daiichi Nuclear Power Plants of Tokyo Electric Power Co., Inc. For 'No more Fukushima', twelve teaching of the accident was pointed out as follows: 1) natural disasters and external events shall be taken into consideration, 2) severe accident shall be included into safety regulation, 3) all possibility of hydrogen explosion shall be excluded, 4) diversity of safety important component and equipment shall be added with sufficient period of outage, 5) siting of multiple units at the same site shall be avoided at quake-prone country like Japan, 6) accident response environment for operators shall be improved, 7) accident convergence termination system shall be established so as to concentrate technical experience and knowledge, 8) off-site center shall be improved, 9) resident evacuation, consumption limit of food, radiation exposure and soil contamination limit shall be decided openly, 10) nuclear regulation and prevention of disaster shall be conducted by unitary organization to gain public trust, 11) fostering of safety culture among relevant enterprises shall be more encouraged and 12) nuclear industry shall develop reactor such as with no core meltdown or no evacuation and environmental contamination even if reactor core would be meltdown. (T. Tanaka)

  1. ANALISA TINGKAT BAHAYA DAN KERENTANAN BENCANA GEMPA BUMI DI WILAYAH NUSA TENGGARA TIMUR (NTT

    Directory of Open Access Journals (Sweden)

    Ni Made Rysnawati

    2017-02-01

    Full Text Available East Nusa Tenggara is a region in Indonesia which included in the category of hazard prone to earthquakes, because it is flanked by two earthquakes zones, (subduction zone at the south and back arc trust in the north. It is also vulnerable to earthquake disasters because of high population density. These conditions would threaten the safety of lives and property of the population, so it needs to be research to analyze the level of earthquake hazard and vulnerability in East Nusa Tenggara. For identification of the level of hazard and the vulnerability of the earthquake in this study using two factors: the danger factor with indicator Peak Ground Acceleration, vulnerability factors with indicators of population density districts in East Nusa Tenggara. The calculation of the value of PGA use attenuation function of Fukushima and Tanaka. From the calculation of the data obtained that has a very high earthquake hazard is in Ende and Alor district, while the district has a very high risk of vulnerability is in Sikka, Sumba Barat Daya and Sabu Raijua.

  2. A proposal on restart rule of nuclear power plants with piping having local wall thinning subjected to an earthquake. Former part. Aiming at further application

    International Nuclear Information System (INIS)

    Urabe, Yoshio

    2011-01-01

    Restart rule of nuclear power plants (NPPs) with piping having local wall thinning subjected to an earthquake was proposed taking account of local wall thinning, seismic effects and restart of NPPs with applicability of 'Guidelines for NPP Response to an Earthquake (EPRI NP-6695)' in Japan. Japan Earthquake Damage Intensity Scale (JEDIS) and Earthquake Ground Motion Level (EGML) were introduced. JEDIS was classified into four scales obtained from damage level of components and structures of NPPs subjected to an earthquake, while EGML was divided into four levels by safe shutdown earthquake ground motion (So), elastic design earthquake ground motion (Sd) and design earthquake ground motion (Ss). Combination of JEDIS and EGML formulated 4 x 4 matrix and determined detailed conditions of restart of NPPs. As a response to an earthquake, operator walk inspections and evaluation of earthquake ground motion were conducted to know the level of JEDIS. JEDIS level requested respective allowable conditions of restart of NPP, which were scale level dependent and consisted of weighted combination of damage inspection (operator walk inspections, focused inspections/tests and expanded inspections), integrity evaluation and repair/replacement. If JEDIS were assigned greater than 3 with expanded inspections, inspection of piping with local wall thinning, its integrity evaluation and repair/replacement if necessary were requested. Inspection and evaluation of piping with local wall thinning was performed based on JSME or ASME codes. Detailed work flow charts were presented. Carbon steel piping and elbow was chosen for evaluation. (T. Tanaka)

  3. Summary reports of doctoral research fellows in 1999

    International Nuclear Information System (INIS)

    2000-07-01

    JNC (Japan Nuclear Cycle Development Institute) has been promoting the fellowship program for young scientists to encourage their expertise from 1997. The objective of this program is to raise the talented persons for future JNC activities. This report summarized the status on the 17 themes of researches implemented by young research fellows in 1999. The report includes the list of individual titles and the site and supporting staffs of JNC. The individual reports given by 17 authors describe its time schedule, status, achievements and own publications in the prearranged format. Topics include the followings; Those are giant resonance structures of short lifetime nuclei, growth of cavities in structural materials, calculation methods of photonuclear interaction cross-section, stability and radioactivity diffusion of bentonite, plant ecology of radioactivity in uranium mines, numerical simulations on the TRUEX process, advanced nondestructive testing of materials, physical properties of actinides obtained by band theory, de-oxidisation capability in pyrite to decrease oxygen in bentonite, investigation on equilibrium fast reactor recycling, behaviors of underground water in the Tono Mine, effects of radiation induced educts on swelling, simulation on fuel-coolant interaction after severe accidents, and resonance ionization mass spectrometry for the JOYO reactor to detect failed fuel locations. (Tanaka, Y.)

  4. Reliability Analysis of Nanocomposite Beams Reinforced with CNTs under Buckling Forces Using the Conjugate HL-RF

    Directory of Open Access Journals (Sweden)

    Behrooz Keshtegar

    2016-12-01

    Full Text Available In this paper, the nonlinear conjugate map is applied based on the conjugate Hasofer-Lind and Rackwitz- Fiessler (CHL-RF method to evaluate the reliability index using the first order reliability method of the embedded nanocomposite beam, which is made of a polymer reinforced with carbon nanotubes (CNTs. The structure is simulated with the Timoshenko beam model. The Mori-Tanaka model is applied for calculating the effective material properties of the nanocomposite beam and the surrounding elastic medium is considered as spring and shear constants. The governing equations are derived based on the energy method and the Hamilton's principle. Moreover, using an analytical method, the buckling performance function of the structure is obtained. The effects of the basic random variables including the length-to-thickness ratio of the beam (L/h, the spring constant, and the shear constant of the foundation with respect to the volume fraction of CNTs are investigated based on the reliability index of the nanocomposite beam which is subjected to an axial force of 20 GPa. The results indicate that the failure probabilities of the studied nanocomposite beams are sensitive to the length-to-thickness ratio of the beam (L/h and the spring constant of the foundation variables.

  5. Root distribution of rootstocks for 'Tahiti' lime

    Directory of Open Access Journals (Sweden)

    Neves Carmen Silvia Vieira Janeiro

    2004-01-01

    Full Text Available Field studies on citrus roots are important for genetic selection of cultivars and for management practices such as localized irrigation and fertilization. To characterize root systems of six rootstocks, taking into consideration chemical and physical characteristics of a clayey Typic Hapludox of the Northern State of Paraná, this study was performed having as scion the 'IAC-5 Tahiti' lime [Citrus latifolia (Yu. Tanaka]. The rootstocks 'Rangpur' lime (C. limonia Osbeck, 'Africa Rough' lemon (C. jambhiri Lush., 'Sunki' mandarin [C. sunki (Hayata hort. ex Tan.], Poncirus trifoliata (L. Raf., 'C13' citrange [C. sinensis (L. Osb. x P. trifoliata (L. Raf] and 'Catânia 2' Volkamer lemon (C. volkameriana Ten. & Pasq. were used applying the trench profile method and the SIARCS® 3.0 software to determine root distribution. 'C-13' citrange had the largest root system. 'Volkamer' lemon and 'Africa Rough' lemon presented the smallest amount of roots. The effective depth for 80 % of roots was 31-53 cm in rows and 67-68 cm in inter-rows. The effective distance of 80 % of roots measured from the tree trunk exceeded the tree canopy for P. trifoliata, 'Sunki' mandarin, and 'Volkamer' and 'Africa Rough' lemons.

  6. Sweet orange trees grafted on selected rootstocks fertilized with nitrogen, phosphorus and potassium

    Directory of Open Access Journals (Sweden)

    Quaggio José Antônio

    2004-01-01

    Full Text Available The majority of citrus trees in Brazil are grafted on 'Rangpur lime' (Citrus limonia Osb. rootstock. Despite its good horticultural performance, search for disease tolerant rootstock varieties to improve yield and longevity of citrus groves has increased. The objective of this work was to evaluate yield efficiency of sweet oranges on different rootstocks fertilized with N, P, and potassium. Tree growth was affected by rootstock varieties; trees on 'Swingle' citrumelo [Poncirus trifoliata (L. Raf. × C. paradisi Macf.] presented the smallest canopy (13.3 m³ in the fifth year after tree planting compared to those on 'Rangpur lime' and 'Cleopatra' mandarin [C. reshni (Hayata hort. ex Tanaka] grown on the same grove. Although it was observed an overall positive relationship between canopy volume and fruit yield (R² = 0.95**, yield efficiency (kg m-3 was affected by rootstocks, which demonstrated 'Rangpur lime' superiority in relation to Cleopatra. Growth of citrus trees younger than 5-yr-old might be improved by K fertilization rates greater than currently recommended in Brazil, in soils with low K and subjected to nutrient leaching losses.

  7. Rootstocks for 'Tahiti' lime

    Directory of Open Access Journals (Sweden)

    Stenzel Neusa Maria Colauto

    2004-01-01

    Full Text Available The 'Tahiti' lime (Citrus latifolia Tanaka is an important commercial citrus cultivar in Brazil. 'Rangpur' lime has being used as its main rootstock, but it is susceptible to root rot caused by Phytophthora, reducing tree longevity. An experiment was set up in a randomized block design, with three trees per plot of each rootstock and four replicates, and run for 12 years, aiming to compare the performance of 'IAC-5 Tahiti' lime, budded on 'Rangpur' lime (Citrus limonia Osb.; 'C-13' citrange (Citrus sinensis (L. Osb. × Poncirus trifoliata (L. Raf.; 'African' rough lemon (Citrus jambhiri Lush.; 'Volkamer' lemon (Citrus volkameriana Ten. & Pasq.; trifoliate orange (Poncirus trifoliata (L. Raf.; 'Sunki' mandarin (Citrus sunki Hort. ex Tan. and 'Cleopatra' mandarin (Citrus reshni Hort. ex Tan.. Eleven years after the establishment of the orchard, trees with the greatest canopy development were budded on 'C-13' citrange and 'African' rough lemon, and both differed significantly from trees budded on trifoliate orange, 'Sunki' and 'Cleopatra' mandarins, which presented the smallest canopy development. Trees budded on 'Rangpur' lime and 'C-13' citrange had the highest cumulative yields, and were different from trees budded on trifoliate orange, 'Cleopatra' and 'Sunki' mandarins. There was no rootstock effect on mean fruit weight and on the total soluble solid/acid ratio in the juice. The 'Rangpur' lime and the 'Cleopatra' mandarin rootstocks reduced longevity of plants.

  8. Percolation Threshold in Polycarbonate Nanocomposites

    Science.gov (United States)

    Ahuja, Suresh

    2014-03-01

    Nanocomposites have unique mechanical, electrical, magnetic, optical and thermal properties. Many methods could be applied to prepare polymer-inorganic nanocomposites, such as sol-gel processing, in-situ polymerization, particle in-situ formation, blending, and radiation synthesis. The analytical composite models that have been put forth include Voigt and Reuss bounds, Polymer nanocomposites offer the possibility of substantial improvements in material properties such as shear and bulk modulus, yield strength, toughness, film scratch resistance, optical properties, electrical conductivity, gas and solvent transport, with only very small amounts of nanoparticles Experimental results are compared against composite models of Hashin and Shtrikman bounds, Halpin-Tsai model, Cox model, and various Mori and Tanaka models. Examples of numerical modeling are molecular dynamics modeling and finite element modeling of reduced modulus and hardness that takes into account the modulus of the components and the effect of the interface between the hard filler and relatively soft polymer, polycarbonate. Higher nanoparticle concentration results in poor dispersion and adhesion to polymer matrix which results in lower modulus and hardness and departure from the existing composite models. As the level of silica increases beyond a threshold level, aggregates form which results in weakening of the structure. Polymer silica interface is found to be weak as silica is non-interacting promoting interfacial slip at silica-matrix junctions. Our experimental results compare favorably with those of nanocomposites of polyesters where the effect of nanoclay on composite hardness and modulus depended on dispersion of nanoclay in polyester.

  9. Contribution of synchrotron diffraction for the study of the martensitic transformation in the steels;Apport de la diffraction synchrotron a l'etude de la transformation martensitique dans les aciers

    Energy Technology Data Exchange (ETDEWEB)

    Dehmas, M.; Bruneseaux, F.; Gautier, E.; Appolaire, B.; Denis, S.; Denand, B.; Settefrati, A. [Laboratoire de Science et Genie des Materiaux et de Metallurgie - LSG2M, Ecole des Mines, Parc de Saurupt, 54 - Nancy (France); Geandier, G.; Mauro, A. [PHYMAT Universite de Poitiers, SP2MI, 86 - Chasseneuil-Futuroscope (France); Peel, M.; Gonzales Aviles, G.; Buslaps, T. [ESRF, 38 - Grenoble (France); Peel, M. [FAME38, 38 - Grenoble (France)

    2009-07-01

    The number of studies dealing with the analysis of phase transformation using in situ Synchrotron high energy X-Ray diffraction is increasing. Indeed, the high energy beam allows a characterization in the volume, with a low acquisition time. Combined with an experimental set up allowing varying the temperature of the specimen with a simultaneous acquisition of the diffraction data, we get a powerful tool to characterize precisely the phase transformation sequences, the overall transformation kinetics, and in some specific cases to reach information on nucleation and growth. A simultaneous analysis of the cell parameters evolutions of each phase during the transformation process may also lead to additional knowledge on the transformation mechanisms. The proposed study is to increase our knowledge of martensitic transformation in steels. In this way, two steels were studied (i.e. Maraging steel with a low carbon amount and 35NiCrMo16 steel with a high amount carbon) by in situ high energy X-ray diffraction in order to follow the kinetics of the martensitic transformation, the evolutions of cell parameters as well as full width at half maximum of each phase. The effect of a stress on the kinetics of martensitic transformation for Maraging steel was also studied. The results are discussed and the mean cell parameter evolution of austenite is compared with a micro-mechanical calculation using a Mori Tanaka model. (authors)

  10. Poly (lactic acid) (PLA)/clay/wood nanocomposites

    Science.gov (United States)

    Meng, Qingkai

    Poly (lactic acid) (PLA) is a promising substitute for conventional petroleum-based polymer materials as a result of its environmentally benign quality and suitable physical properties. However, there are also problems associated with properties, such as brittleness, low heat deflection temperature, low melt viscosity, as well as cost that prevent wide-range applications of PLA. This work reports on melt extrusion preparation of PLA/clay/wood nanocomposites involving various compatibilizers, resulting in remarkable improvements in mechanical as well as in thermal material properties. In particular, the tensile and flexural moduli of PLA/clay/wood nanocomposites with 30 wt. % wood flour and 5 wt. % nanoclay respectively increased from 3.75 to 7.08 GPa and from 3.83 to 6.01 GPa compared to neat PLA. The thermal decomposition temperature improved by about 10°C compared to that of PLA/wood composites. A mathematical model was developed based on Eshelby's equivalent inclusion method and Mori-Tanaka's background analysis to successfully predict longitudinal elastic moduli of complex structured nanocomposite materials.

  11. Processable conductive graphene/polyethylene nanocomposites: Effects of graphene dispersion and polyethylene blending with oxidized polyethylene on rheology and microstructure

    Energy Technology Data Exchange (ETDEWEB)

    Iqbal, Muhammad Z.; Abdala, Ahmed A.; Mittal, Vikas; Seifert, Sӧnke; Herring, Andrew M.; Liberatore, Matthew W.

    2016-08-01

    Poor dispersion of graphene in non-polar polymer matrices creates composites with limited applications. A method to improve the dispersion of graphene in polyethylene (PE) via blending PE with oxidized PE (OPE) is examined. Graphene was produced by simultaneous thermal exfoliation and reduction of graphite oxide. Nanocomposites of graphene with PE as well as graphene with PE/OPE-blends were prepared by solvent blending. Improved dispersion of graphene in PE/OPE blends substantially decreases percolation from both rheological (0.3 vol%) and electrical (0.13 vol%) measurements compared to neat PE nanocomposites (1 and 0.29 vol%), respectively. A universal Brownian dispersion of graphene in polymers was concluded similar to that of nanotubes, following the Doi-Edwards theory. Micromechanical models, such as Mori-Tanaka and Halpin-Tsai models, modeled the mechanical properties of the nanocomposites. The nanocomposites microstructure, studied by small angle x-ray scattering, confirmed better dispersion of graphene at lower loadings and the formation of surface fractals in the blend/graphene nanocomposites; whereas only mass fractals were observed in neat PE/graphene nanocomposites.

  12. Pathological and radiological correlation in an autopsy case of combined pulmonary fibrosis and emphysema

    Directory of Open Access Journals (Sweden)

    Karata H

    2015-07-01

    Full Text Available Hiroki Karata,1 Tomonori Tanaka,1 Ryoko Egashira,2 Kazuhiro Tabata,1 Kyoko Otani,3 Ryuji Hayashi,4 Takashi Hori,5 Junya Fukuoka1 1Department of Pathology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan; 2Department of Radiology, Faculty of Medicine, Saga University, Saga, Japan; 3Department of Diagnostic Pathology, Kobe University Graduate School of Medicine, Kobe, Japan; 4Department of Internal Medicine, University of Toyama, Faculty of Medicine, Toyama, Japan; 5Laboratory of Pathology, Toyama University Hospital, Toyama, Japan Abstract: We report an educational autopsy case of combined pulmonary fibrosis and emphysema. Radiological patterns of the upper lung were considered as mostly emphysema, but pathological observation revealed significant interstitial fibrosis of usual interstitial pneumonia as a major pathology. The patient eventually developed acute exacerbation of background interstitial pneumonia. Careful radiological and pathological correlation of the current case indicates that regions with distal acinar emphysema on computed tomography image may possess histologically marked dense fibrosis of lethal interstitial pneumonia. Keywords: interstitial pneumonia, CPFE, AEF, smoking, CT

  13. Optimization of the piezoelectric response of 0–3 composites: a modeling approach

    International Nuclear Information System (INIS)

    Chambion, B; Goujon, L; Badie, L; Mugnier, Y; Barthod, C; Galez, C; Wiebel, S; Venet, C

    2011-01-01

    Finite element modeling is used in this study to optimize the electromechanical behavior of 0–3 composites according to the material properties of their constituents. Our modeling approach considers an 'extended' 2D representative volume element (RVE) with randomly dispersed piezoelectric particles. A variable distribution of their polarization axes is also implemented because a full periodic arrangement of fillers and a unique poling orientation are unrealistic in practice. Comparisons with a simpler RVE and with an analytical model based on the Mori–Tanaka approach are performed as a function of the particle concentration for the elastic, dielectric and piezoelectric homogenized properties. An optimization of the piezoelectric response of 0–3 composites according to material considerations is then computed, allowing it to be shown that the piezoelectric strain coefficient is not the only relevant parameter and that lead-free piezoelectric fillers such as LiNbO 3 and ZnO are competitive alternatives. Finally, the piezoelectric responses of 0–3 composites with different filler arrangements are quantitatively compared to 1–3 composites and to the corresponding bulk material

  14. Status of tandem accelerator of TONO Earth Science Center

    Energy Technology Data Exchange (ETDEWEB)

    Itoh, Shigeru; Xu, Sheng; Abe, Masahito; Watanabe, Masato; Ariga, Maki; Iwatsuki, Teruki [Tono Geoscience Center, Gifu (Japan)

    2001-02-01

    On 1996, Tono Earth Science Center of JNC introduced the mass spectrometer tandem accelerator for isotope analysis of natural samples such as underground water and rocks. Facilities were 15SDH-2 pelletron type system made by NEC (Nihon Electric Company), Japan. Total beam generation times were 949 hours from April 1999 to January 2000. We made measurements on total 795 samples from November 1999 to April 2000 using the ion source for solid samples. Samples were IAEA calibration standards, oxalic acid of NIST (National Institute of Standards), CaCO{sub 3} from shells, BaCO{sub 3} and SrCO{sub 2} from underground water, CO{sub 2} from air, and organic samples from soils. Preliminary tests using the ion source for gaseous samples have been carried out. We have used NIST oxalic acid as a standard and an IAEA C1 sample as background. We have got the lower values in the case of IAEA C2, C3 and C7 samples. Accumulation of the data is needed to confirm accuracy. In addition, we are accepting samples from outside after September 1999. Major troubles are: breaks of pellet chain, sparks near terminals, and damages of rotating shaft. The troubles are already fixed. We are continuing operation to estimate accuracy in relation with careful initial treatment of samples. (Y. Tanaka)

  15. Application of electron accelerator worldwide

    Energy Technology Data Exchange (ETDEWEB)

    Machi, Sueo [Japan Atomic Industrial Forum, Inc., Tokyo (Japan)

    2003-02-01

    Electron accelerator is an important radiation source for radiation technology, which covers broad fields such as industry, health care, food and environmental protection. There are about 1,000 electron accelerators for radiation processing worldwide. Electron accelerator has advantage over Co-60 irradiator in term of high dose rate and power, assurance of safety, and higher economic performance at larger volume of irradiation. Accelerator generating higher energy in the range of 10 MeV and high power electron beam is now commercially available. There is a trend to use high-energy electron accelerator replacing Co-60 in case of large through-put of medical products. Irradiated foods, in particular species, are on the commercial market in 35 countries. Electron accelerator is used efficiently and economically for production of new or modified polymeric materials through radiation-induced cross-linking, grafting and polymerization reaction. Another important application of electron beam is the curing of surface coatings in the manufacture of products. Electron accelerators of large capacity are used for cleaning exhaust gases in industrial scale. Economic feasibility studies of this electron beam process have shown that this technology is more cost effective than the conventional process. It should be noted that the conventional limestone process produce gypsum as a by-product, which cannot be used in some countries. By contrast, the by-product of the electron beam process is a valuable fertilizer. (Y. Tanaka)

  16. Effect of Rhodophyta extracts on in vitro ruminal fermentation characteristics, methanogenesis and microbial populations.

    Science.gov (United States)

    Lee, Shin Ja; Shin, Nyeon Hak; Jeong, Jin Suk; Kim, Eun Tae; Lee, Su Kyoung; Lee, Sung Sill

    2018-01-01

    Due to the threat of global warming, the livestock industry is increasingly interested in exploring how feed additives may reduce anthropogenic greenhouse gas emissions, especially from ruminants. This study investigated the effect of Rhodophyta supplemented bovine diets on in vitro rumen fermentation and rumen microbial diversity. Cannulated Holstein cows were used as rumen fluid donors. Rumen fluid:buffer (1:2; 15 mL) solution was incubated for up to 72 h in six treatments: a control (timothy hay only), along with substrates containing 5% extracts from five Rhodophyta species ( Grateloupia lanceolata [Okamura] Kawaguchi, Hypnea japonica Tanaka, Pterocladia capillacea [Gmelin] Bornet, Chondria crassicaulis Harvey, or Gelidium amansii [Lam.] Lamouroux). Compared with control, Rhodophyta extracts increased cumulative gas production after 24 and 72 h (p = 0.0297 and p = 0.0047). The extracts reduced methane emission at 12 and 24 h (pRhodophyta extracts improved acetate concentration at 12 and 24 h (p = 0.0766 and p = 0.0132), as well as acetate/propionate (A/P) ratio at 6 and 12 h (p = 0.0106 and p = 0.0278). Rhodophyta extracts are a viable additive that can improve ruminant growth performance (higher total gas production, lower A/P ratio) and methane abatement (less ciliate-associated methanogens, Ruminococcus albus and Ruminococcus flavefaciens and more F. succinogenes .

  17. Hamaoka Nuclear Power Station of Chubu Electric Power Co. was busy with the construction of tsunami countermeasures. Aiming at restoring public's trust in nuclear power

    International Nuclear Information System (INIS)

    2012-01-01

    Direct cause of the accident at Tokyo Electric Power Co.'s Fukushima Daiichi Nuclear Power Station was known the loss of its function to cool reactors due to the tsunami, which flooded important facilities such as seawater intake pumps and emergency power supply systems. The dune embankment in front of Hamaoka Nuclear Power Station might act as a barrier to prevent tsunami-related flooding. As additional flooding prevention measure, on the station site, a new tsunami prevention wall reaching 18 m above sea level (total length: approx. 1.6 km) was under construction and in buildings, emergency seawater intake systems (EWS) of waterproof buildings with new seawater intake pumps and increased pressure resistance and water tightness of reactor building outer walls by adding double doors and new reinforced doors were in preparation. As for enhancement of emergency measures, multiple ways of ensuring the three functions necessary for continued cooling of reactors (power supply, water injection and heat removal) were deployed even if the functions of seawater intake pumps and emergency power supply systems are lost, and reactors can be reliably and safely brought to a state of cold shutdown. Completion of such new tsunami countermeasures were one year delayed and targeted at December 2013. (T. Tanaka)

  18. PWR's countermeasures after Fukushima Daiichi Nuclear Power Plant accident

    International Nuclear Information System (INIS)

    Kato, Akihiko

    2012-01-01

    Countermeasures in case of similar events (loss of all AC power sources (SBO) and loss of ultimate heat sink (LUHS) as Fukushima Daiichi were investigated for further improvement of safety and reliability of PWR Plants. As for PWR in case of SBO and LUHS, steam driven auxiliary feedwater pump could be operable to supply feedwater to steam generators and stable state of reactor could be attained by natural circulation cooling of primary coolant Generated steam would be released to the air from main steam relief valve. Emergency safety countermeasures were taken to (1) improve water tightness by application of door and pipe penetration sealing to protect important equipment from flooding due to tsunami, (2) deploy mobile engine-operated pumps and (3) deploy emergency air-cooled generators. The government ordered 'stress tests' to quantify the effectiveness of safety measures for all Japan's reactors before they restart following any shutdown. Based on emergency safety countermeasures, plant operators assessed whether reactor and spent fuel pool could be stably cooled by external events (earthquake, tsunami and simultaneous effects) beyond the plant design basis. Further safety and reliability improvements of PWR plants had been considered or implemented for reinforcement of external power system, onsite power system with additional installation of permanent emergency air-cooled generators, enhancement of plant cooling function and update closure function of containment vessel in case of severe accident (T. Tanaka)

  19. Reliability of permanent mandibular first molars and incisors widths as predictor for the width of permanent mandibular and maxillary canines and premolars

    Directory of Open Access Journals (Sweden)

    Madhulika Mittar

    2012-01-01

    Full Text Available Aim: Preventive measures are necessary to prevent a potential irregularity from progressing into a more severe malocclusion. The determination of the tooth size-arch length discrepancy in mixed dentition requires an accurate prediction of the mesiodistal widths of the unerupted permanent teeth. Materials and Methods: For the study, 200 subjects in the age group of 16-25 years were selected from various colleges of M. M. University. The mesiodistal width of permanent mandibular incisors, first molars, canines and premolars of both arches were measured on the subject cast using an electronic digital caliper. Statistical analysis showed a significant difference between mesiodistal tooth widths of males and females. Linear regression equation was determined to predict the sum of mandibular and maxillary permanent canines and premolars using mandibular first molars plus the four mandibular incisors as predictors. Results: There was no significant difference between the actual and predicted width of sum of permanent canines and premolars using regression equations. The predicted widths of both arches using Tanaka and Johnston equations showed significant differences. Determined regression equations for males were accurate in male samples and determined regression equation for females were accurate in female samples for both arches.

  20. Analysis of Functionally Graded Material Plates Using Triangular Elements with Cell-Based Smoothed Discrete Shear Gap Method

    Directory of Open Access Journals (Sweden)

    S. Natarajan

    2014-01-01

    Full Text Available A cell-based smoothed finite element method with discrete shear gap technique is employed to study the static bending, free vibration, and mechanical and thermal buckling behaviour of functionally graded material (FGM plates. The plate kinematics is based on the first-order shear deformation theory and the shear locking is suppressed by the discrete shear gap method. The shear correction factors are evaluated by employing the energy equivalence principle. The material property is assumed to be temperature dependent and graded only in the thickness direction. The effective properties are computed by using the Mori-Tanaka homogenization method. The accuracy of the present formulation is validated against available solutions. A systematic parametric study is carried out to examine the influence of the gradient index, the plate aspect ratio, skewness of the plate, and the boundary conditions on the global response of the FGM plates. The effect of a centrally located circular cutout on the global response is also studied.

  1. Low voltage electron beam accelerators

    Energy Technology Data Exchange (ETDEWEB)

    Ochi, Masafumi [Iwasaki Electric Co., Ltd., Tokyo (Japan)

    2003-02-01

    Widely used electron accelerators in industries are the electron beams with acceleration voltage at 300 kV or less. The typical examples are shown on manufactures in Japan, equipment configuration, operation, determination of process parameters, and basic maintenance requirement of the electron beam processors. New electron beam processors with acceleration voltage around 100 kV were introduced maintaining the relatively high dose speed capability of around 10,000 kGy x mpm at production by ESI (Energy Science Inc. USA, Iwasaki Electric Group). The application field like printing and coating for packaging requires treating thickness of 30 micron or less. It does not require high voltage over 110 kV. Also recently developed is a miniature bulb type electron beam tube with energy less than 60 kV. The new application area for this new electron beam tube is being searched. The drive force of this technology to spread in the industries would be further development of new application, process and market as well as the price reduction of the equipment, upon which further acknowledgement and acceptance of the technology to societies and industries would entirely depend. (Y. Tanaka)

  2. Investigation of transverse Peltier effect on top-seeded melt textureYBa2Cu3O7-δ

    International Nuclear Information System (INIS)

    He, Z.H.; Ma, Z.G.; Li, Q.Y.; Luo, Y.Y.; Zhang, J.X.; Meng, R.L.; Chu, C.W.

    1996-01-01

    The transverse Peltier effect is investigated on the top-seeded melt texture superconductor YBa 2 Cu 3 O 7-δ (YBCO). By restricting the heat absorbing or evolving on one of the sample close-quote s surfaces, the Peltier heat flow is converted into a temperature difference for measurement. The temperature difference is found proportional to the current applied, which is in accordance with the prediction of transverse Peltier effect. Based on a simplified model, the difference of the Seebeck coefficients between the ab plane and the c axis, |S ab -S c |, is about 35 μV/K. It is in good agreement with that of large single crystal [I. Terasaki, Y. Sato, S. Tajima, S. Miyamoto, and S. Tanaka, Physica C 235-240, 1413 (1994)]. The transverse Peltier effect is verified. This supports the idea that the off-diagonal thermoelectric effect is responsible for the anomalously high laser-induced transient transverse voltage on the oriented YBCO superconducting thin films. copyright 1996 American Institute of Physics

  3. Fractionation in the solar nebula - Condensation of yttrium and the rare earth elements

    Science.gov (United States)

    Boynton, W. V.

    1975-01-01

    The condensation of Y and the rare earth elements (REE) from the solar nebula may be controlled by thermodynamic equilibrium between gas and condensed solids. Highly fractionated REE patterns may result if condensates are removed from the gas before condensation is complete. It is found that the fractionation is not a smooth function of REE ionic radius but varies in an extremely irregular pattern. Both Yb and Eu are predicted to be extremely depleted in the early condensate without the requirement of condensation in the divalent state. The model is discussed with respect to a highly fractionated pattern observed by Tanaka and Masuda (1973), in a pink Ca-Al-rich inclusion from the Allende meteorite and can account for the abundances of each REE determined. According to the model this inclusion represents a condensate from a previously fractionated gas rather than from a gas of solar composition. Before the condensation of this inclusion, an earlier condensate was formed and was removed from equilibrium with the gas.

  4. Medium and high energy electron beam processing system

    Energy Technology Data Exchange (ETDEWEB)

    Kashiwagi, Masayuki [Nissin-High Voltage Co., Ltd., Kyoto (Japan)

    2003-02-01

    Electron Beam Processing System (EPS) is a useful and powerful tool for industrial irradiation process. The specification of EPS is decided by consideration to irradiate what material with how thick and wide, how much dose, how to handle, in what atmosphere. In designing an EPS, it is necessary to consider safety measure such as x-ray shielding, ozone control and interlock system. The initial costs to install typical EPS are estimated for acceleration voltages from 500 kV to 5 MV, including following items; those are electron beam machine, x-ray shielding, auxiliary equipment, material handling, survey for installation, ozone exhaust duct, cooling water system, wiring and piping. These prices are reference only because the price should be changed for each case. The price of x-ray shielding should be changed by construction cost. Auxiliary equipment includes window, cooling blower, ozone exhaust blower and SF6 gas handling equipment. In installation work at site, actual workers of 3 - 4 persons for 2 months are necessary. Material handling system is considered only rolls provided in the shielding room as reference. In addition to the initial installation, operators and workers may be required to wear a personal radiation monitor. An x-ray monitor of suitable design should be installed outside the shield room to monitor x-ray level in the working area. (Y. Tanaka)

  5. Development of sperm vitrification protocols for freshwater fish (Eurasian perch, Perca fluviatilis) and marine fish (European eel, Anguilla anguilla).

    Science.gov (United States)

    Kása, Eszter; Bernáth, Gergely; Kollár, Tímea; Żarski, Daniel; Lujić, Jelena; Marinović, Zoran; Bokor, Zoltán; Hegyi, Árpád; Urbányi, Béla; Vílchez, M Carmen; Morini, Marina; Peñaranda, David S; Pérez, Luz; Asturiano, Juan F; Horváth, Ákos

    2017-05-01

    Vitrification was successfully applied to the sperm of two fish species, the freshwater Eurasian perch (Perca fluviatilis) and marine European eel (Anguilla anguilla). Sperm was collected, diluted in species-specific non-activating media and cryoprotectants and vitrified by plunging directly into liquid nitrogen without pre-cooling in its vapor. Progressive motility of fresh and vitrified-thawed sperm was evaluated with computer-assisted sperm analysis (CASA). Additional sperm quality parameters such as sperm head morphometry parameters (in case of European eel) and fertilizing capacity (in case of Eurasian perch) were carried out to test the effectiveness of vitrification. The vitrification method for Eurasian perch sperm resulting the highest post-thaw motility (14±1.6%) was as follows: 1:5 dilution ratio, Tanaka extender, 30% cryoprotectant (15% methanol+15% propylene-glycol), cooling device: Cryotop, 2μl droplets, and for European eel sperm: dilution ratio 1:1, with 40% cryoprotectant (20% MeOH and 20% PG), and 10% FBS, cooling device: Cryotop, with 2μl of sperm suspension. Viable embryos were produced by fertilization with vitrified Eurasian perch sperm (neurulation: 2.54±1.67%). According to the ASMA analysis, no significant decrease in head area and perimeter of vitrified European eel spermatozoa were found when compared to fresh spermatozoa. Copyright © 2016 Elsevier Inc. All rights reserved.

  6. Ethics on the TEPCO bankruptcy, nuclear power plants and regulatory reform in the electric power industry

    International Nuclear Information System (INIS)

    Koga, Shigeaki

    2013-01-01

    Although regulatory reform in the electric power industry had been considered as part of social system reform like in the finance and communications to liberalize the market, there still continued to exist regional monopoly, integrated system for power generation, transmission and distribution, and lack of competition. The Fukushima accident showed such electric power system was unethical as social system compared to ordinary industries, because electric power company getting profit could not be prepared for nuclear damage liability and would burden third unrelated parties with risk. Electric power company should be forced to insure nuclear power plants for nuclear accidents. Otherwise restart of nuclear power plant operation should not be allowed. Nuclear power had been justified to be entitled grant or subsidy from the government for public good, which would be unfair to people. This article presented speeding-up scheme of Fukushima accident treatment leading to TEPCO bankruptcy and discussed measures against concerns or comments about bankruptcy procedures, major part of which might be mitigation of fund-raising fear by government support. At the proceeding of bankruptcy procedure including spinning off of separate companies, regulatory reform in the electric power industry could be taken in advanced. (T. Tanaka)

  7. What's happening in 'renewable energy developed country: Germany'. Next step our country should learn

    International Nuclear Information System (INIS)

    Kitamura, Kazuya

    2012-01-01

    What's the next step our country should take? Japan could learn a lot of things such as success or failure examples from renewable energy developed country: Germany. This article reviewed present state of Feed-In Tariffs and renewable energy power in Germany. Share of renewable energy power amounted to 20% including 7.6% of wind power and 6.1% of biomass in 2011. Such trend caused increase of power cost, restructure of power system such as new installation of power transmission against north coast offshore wind power plant, and development of power storage system such as hydrogen production or pumped storage power plant. Efficient introduction of renewable energy should be planned in Japan based on appropriate share target of renewable energy share. As for nuclear power phaseout, Japan should learn German's experiences on decommissioning and decontamination of nuclear power plants, and policies of intermediate storage and final disposal of high-level radioactive wastes, which needed a long time and a great cost. (T. Tanaka)

  8. Cortical responses to Mozart's sonata enhance spatial-reasoning ability.

    Science.gov (United States)

    Suda, Miyuki; Morimoto, Kanehisa; Obata, Akiko; Koizumi, Hideaki; Maki, Atsushi

    2008-11-01

    In this study, we examined the effects of Mozart's music on spatial-reasoning ability by near-infrared spectroscopy (NIRS). The subjects comprised five males and five females (aged 25-35 years). They were administered the seven original core subtests of the Japanese version of the Tanaka B-type intelligence test, which includes a spatial-reasoning subtest. We used three different music conditions: Mozart's sonata (K. 448), Beethoven and a silent control condition. Moreover, we used optical topography to assess the effects of music on brain function with a spatial-reasoning subtest. We found that exposure to Mozart's sonata enhanced cognitive performance in intelligence tests when compared with results obtained upon exposure to Beethoven or silence. In addition to the expected temporal cortex activation, we report dramatic results revealing differences in activation in the dorsolateral prefrontal cortex and the occipital cortex, both of which are expected to be important for spatial-temporal reasoning. We suggest the possibility of a direct priming effect being responsible for preferential activation, and open the door to understanding the potential effects of Mozart's music.

  9. Initial operations in local nuclear emergency response headquarter

    International Nuclear Information System (INIS)

    2012-06-01

    As a result of the Fukushima nuclear accident due to the Great East Japan Earthquake and the tsunami that occurred thereafter, local nuclear emergency response headquarters (local headquarters) was set up at off-site center (OFC). However, several obstacles such as the collapse of means of communication resulting from severed communication lines, food and fuel shortage resulting from stagnant physical distribution, and increasing radiation dose around the center significantly restricted originally intended operation of local headquarters. In such severe situation, the personnel gathered at the OFC from the government, local public bodies and electric companies from March 11 to 15 acted without sufficient food, sleep or rest and did all they could against successively occurring unexpected challenges by using limited means of communication. However, issues requiring further consideration were activities of each functional group, location of OFC and the functions of equipment, machines and materials and reflecting the consideration results into future protective measures and revision of the manual for nuclear emergency response were greatly important. This report described investigated results on initial operations in local headquarters such as situation of activities conducted by local headquarters and operations at functional groups. (T. Tanaka)

  10. Practical standard for nuclear power plant life management programs: 2007

    International Nuclear Information System (INIS)

    2006-03-01

    The standard specifies the method of implementing nuclear power plant life management programs. The plant life management programs evaluate the integrity of the plant structures, systems and components, assessing if appropriate measures are taken against existing aging phenomena, if there are possibilities of occurrence and development of aging phenomena and if a sufficient level of margin is maintained to assure the integrity throughout the future operating period. The programs also assess the validity of the current maintenance activities, such as trend monitoring, walkdowns, periodic tests and inspections, repair and replacement work for the purpose of preventive maintenance, and utilization of lessons learned from past trouble experience, in order to newly identify maintenance measures. The technical evaluation on aging phenomena is conducted to establish the 10 year maintenance program for nuclear power plants until the plant reaches 30 years of service. The standard was established and issued by the Atomic Energy Society of Japan (AESJ) through the discussion of experts in the associated fields. (T. Tanaka)

  11. Multi-scale poro-creep model for cement-based materials

    International Nuclear Information System (INIS)

    Gu, Shui-Tao; Thai, Minh-Quan; Bary, Benoit; He, Qi-Chang

    2012-01-01

    Experimental observations clearly show that the relative humidity (h r ) conditions influence significantly the creep behavior of cement-based materials, indicating that the water present within these materials plays a crucial role. This work presents a creep model for hardened cement pastes (HCP), based on a multi-scale homogenization approach. It takes into account both free and adsorbed water contained in the porosity and investigates their effects on the HCP macroscopic creep behavior. The calcium silicate hydrate phase is assumed to be linear viscoelastic, and the Mori-Tanaka scheme is applied in the Laplace-Carson space to the composite formed of porosity, calcium silicate hydrate, and the other main hydrated compounds (which behavior is linearly elastic) by making use of the correspondence principle. With this model, estimations of the evolution of the macroscopic creep behavior of HCP submitted to constant external loading are examined under different h r and compared with available experimental data. Finally, a method for implementing the model in a finite element code is proposed, and simulations of standard creep tests are performed to assess its validity. (authors)

  12. On the committee for disputes solution on the atomic damages in Japan. The legal scheme and the guideline-making about the damages from the accident of Fukushima Daiichi Atomic Power Stations

    International Nuclear Information System (INIS)

    Takahashi, Shigeru

    2011-01-01

    Fukushima Daiichi accident did much damage on agriculture, fisheries and others, and also damage related with evacuation on surrounding affected residents. To cope with this situation, Committee for Disputes Solution on the Atomic Damages was established in April and the overall guideline as the basis on which Tokyo Electric Power Co. should pay compensation to the affected persons, was issued on August 5, 2011. This article overviewed special scheme derived from Act on Compensation for Nuclear Damage requiring absolute and unlimited liabilities of nuclear operators and its amendment following the JCO accident and others. And then activities of Committee for Disputes Solution on the Atomic Damages to decide the guideline and its contents were outlined. It would be quite important for the government to establish legal payment scheme of compensation that one nuclear operator could not pay by itself and to implement prompt measures toward prevention of damage expansion and promotion of restoration. Bill concerning formation of a nuclear damage compensation support organization was enacted on July 28 and it would ensure prompt payment of damage compensation to affected persons. (T. Tanaka)

  13. Pressure dependence of viscosity in supercooled water and a unified approach for thermodynamic and dynamic anomalies of water.

    Science.gov (United States)

    Singh, Lokendra P; Issenmann, Bruno; Caupin, Frédéric

    2017-04-25

    The anomalous decrease of the viscosity of water with applied pressure has been known for over a century. It occurs concurrently with major structural changes: The second coordination shell around a molecule collapses onto the first shell. Viscosity is thus a macroscopic witness of the progressive breaking of the tetrahedral hydrogen bond network that makes water so peculiar. At low temperature, water at ambient pressure becomes more tetrahedral and the effect of pressure becomes stronger. However, surprisingly, no data are available for the viscosity of supercooled water under pressure, in which dramatic anomalies are expected based on interpolation between ambient pressure data for supercooled water and high pressure data for stable water. Here we report measurements with a time-of-flight viscometer down to [Formula: see text] and up to [Formula: see text], revealing a reduction of viscosity by pressure by as much as 42%. Inspired by a previous attempt [Tanaka H (2000) J Chem Phys 112:799-809], we show that a remarkably simple extension of a two-state model [Holten V, Sengers JV, Anisimov MA (2014) J Phys Chem Ref Data 43:043101], initially developed to reproduce thermodynamic properties, is able to accurately describe dynamic properties (viscosity, self-diffusion coefficient, and rotational correlation time) as well. Our results support the idea that water is a mixture of a high density, "fragile" liquid, and a low density, "strong" liquid, the varying proportion of which explains the anomalies and fragile-to-strong crossover in water.

  14. Reactor control system. PWR

    International Nuclear Information System (INIS)

    2009-01-01

    At present, 23 units of PWR type reactors have been operated in Japan since the start of Mihama Unit 1 operation in 1970 and various improvements have been made to upgrade operability of power stations as well as reliability and safety of power plants. As the share of nuclear power increases, further improvements of operating performance such as load following capability will be requested for power stations with more reliable and safer operation. This article outlined the reactor control system of PWR type reactors and described the control performance of power plants realized with those systems. The PWR control system is characterized that the turbine power is automatic or manually controlled with request of the electric power system and then the nuclear power is followingly controlled with the change of core reactivity. The system mainly consists of reactor automatic control system (control rod control system), pressurizer pressure control system, pressurizer water level control system, steam generator water level control system and turbine bypass control system. (T. Tanaka)

  15. Optimal relaxation parameters of DRAMA (dynamic RAMLA) aiming at one-pass image reconstruction for 3D-PET.

    Science.gov (United States)

    Tanaka, Eiichi; Kudo, Hiroyuki

    2010-05-21

    We have reported a block-iterative algorithm named DRAMA for image reconstruction for emission tomography (Tanaka and Kudo 2003 Phys. Med. Biol. 48 1405-22). DRAMA is a modified version of the row-action maximum likelihood algorithm (RAMLA), in which the relaxation parameter is subset dependent and is changed in such a way that the noise propagation from subsets to the reconstructed image is substantially independent of the access order of the subsets. The algorithm provides fast convergence with a reasonable signal-to-noise ratio. The optimal relaxation parameter has been derived assuming a two-dimensional (2D)-PET model, and detailed performance in three-dimensional (3D) reconstruction has not been clear enough. We have developed the new version 'DRAMA-3D', based on the 3D-PET model. The optimal relaxation parameter is a function of the access order of the subsets and the ring difference, and its value is determined by simple formulas from the design parameters of the PET scanner, the operating conditions and the post-smoothing resolution. In this paper, we present the theory of DRAMA-3D, the results of simulation studies on the performance of DRAMA-3D and the comparative studies of the related algorithms. It is shown that DRAMA-3D is robust for various access orders of subsets and is suitable to realize one-pass (single-iteration) reconstruction.

  16. Residual stress measurements by X-ray and neutron diffractions in heat-treated SiCw/A2014 composites

    International Nuclear Information System (INIS)

    Ohnuki, Takahisa; Fujita, Motoo; Tomota, Yo; Ono, Masayoshi

    1998-01-01

    Residual stresses due to various heat treatments in a 22 volume percent SiC whisker/A2014 metal matrix composite (MMC) were measured by using X-ray and neutron diffractions. Micro residual stresses generated from the differences in thermal expansion coefficients of the constituents and macro residual stresses associated with different cooling rates in the outer and inner regions of an MMC specimen must be distinguished in X-ray stress measurements. The conventional sin 2 ψ method under an assumption of plane stress condition has been found not to be applicable to the present MMC, because interactions among whiskers in the X-ray penetrating area yields σ 33 where the x 3 -axis is normal with respect to specimen's surface. An average value of σ 33 can be measured by X-ray diffraction technique, but does not seem enough to evaluate micro residual stresses. It is found that neutron diffraction is the most powerful method to measure micro residual stresses in the constituents. Elastic residual strains obtained by neutron diffraction in solution treated or T6 heat treated samples show good agreements with predictions calculated by using Eshelby inclusion theory coupled with the Mori-Tanaka mean field concept, indicating that the influence of stress relaxation is negligible. In addition, internal stresses relaxations during holding at room temperature, slow cooling from solution treatment temperature, or subzero cooling are discussed. (author)

  17. PREFACE: IUMRS-ICA 2008 Symposium, Sessions 'X. Applications of Synchrotron Radiation and Neutron Beam to Soft Matter Science' and 'Y. Frontier of Polymeric Nano-Soft-Materials - Precision Polymer Synthesis, Self-assembling and Their Functionalization'

    Science.gov (United States)

    Takahara, Atsushi; Kawahara, Seiichi

    2009-09-01

    Applications of Synchrotron Radiation and Neutron Beam to Soft Matter Science (Symposium X of IUMRS-ICA2008) Toshiji Kanaya, Kohji Tashiro, Kazuo Sakura Keiji Tanaka, Sono Sasaki, Naoya Torikai, Moonhor Ree, Kookheon Char, Charles C Han, Atsushi Takahara This volume contains peer-reviewed invited and contributed papers that were presented in Symposium X 'Applications of Synchrotron Radiation and Neutron Beam to Soft Matter Science' at the IUMRS International Conference in Asia 2008 (IUMRS-ICA 2008), which was held on 9-13 December 2008, at Nagoya Congress Center, Nagoya, Japan. Structure analyses of soft materials based on synchrotron radiation (SR) and neutron beam have been developed steadily. Small-angle scattering and wide-angle diffraction techniques clarified the higher-order structure as well as time dependence of structure development such as crystallization and microphase-separation. On the other hand, reflectivity, grazing-incidence scattering and diffraction techniques revealed the surface and interface structural features of soft materials. From the viewpoint of strong interests on the development of SR and neutron beam techniques for soft materials, the objective of this symposium is to provide an interdisciplinary forum for the discussion of recent advances in research, development, and applications of SR and neutron beams to soft matter science. In this symposium, 21 oral papers containing 16 invited papers and 14 poster papers from China, India, Korea, Taiwan, and Japan were presented during the three-day symposium. As a result of the review of poster and oral presentations of young scientists by symposium chairs, Dr Kummetha Raghunatha Reddy (Toyota Technological Institute) received the IUMRS-ICA 2008 Young Researcher Award. We are grateful to all invited speakers and many participants for valuable contributions and active discussions. Organizing committee of Symposium (IUMRS-ICA 2008) Professor Toshiji Kanaya (Kyoto University) Professor Kohji

  18. Accuracy improvement of CT reconstruction using tree-structured filter bank

    International Nuclear Information System (INIS)

    Ueda, Kazuhiro; Morimoto, Hiroaki; Morikawa, Yoshitaka; Murakami, Junichi

    2009-01-01

    Accuracy improvement of 'CT reconstruction algorithm using TSFB (Tree-Structured Filter Bank)' that is high-speed CT reconstruction algorithm, was proposed. TSFB method could largely reduce the amount of computation in comparison with the CB (Convolution Backprojection) method, but it was the problem that an artifact occurred in a reconstruction image since reconstruction was performed with disregard to a signal out of the reconstruction domain in stage processing. Also the whole band filter being the component of a two-dimensional synthesis filter was IIR filter and then an artifact occurred at the end of the reconstruction image. In order to suppress these artifacts the proposed method enlarged the processing range by the TSFB method in the domain outside by the width control of the specimen line and line addition to the reconstruction domain outside. And, furthermore, to avoid increase of the amount of computation, the algorithm was proposed such as to decide the needed processing range depending on the number of steps processing with the TSFB and the degree of incline of filter, and then update the position and width of the specimen line to process the needed range. According to the simulation to realize a high-speed and highly accurate CT reconstruction in this way, the quality of the reconstruction image of the proposed method was improved in comparison with the TSFB method and got the same result with the CB method. (T. Tanaka)

  19. A micro-mechanical analysis and an experimental characterisation of the behavior and the damaging processes of a 16MND5 pressure vessel steel at low temperature; Etude micromecanique et caracterisation experimentale du comportement et de l'endommagement de l'acier de cuve 16MND5 a basses temperatures

    Energy Technology Data Exchange (ETDEWEB)

    Pesci, R

    2004-06-15

    As part of an important experimental and numerical research program launched by Electricite De France on the 16MND5 pressure vessel steel, sequenced and in-situ tensile tests are realized at low temperatures [-196 C;-60 C]. They enable to associate the observation of specimens, the complete cartography of which has been made with a scanning electron microscope (damaging processes, initiation and propagation of microcracks), with the stress states determined by X-ray diffraction, in order to establish relevant criteria. All these measurements enable to supply a two-scale polycrystalline modeling of behavior and damage (Mori-Tanaka/self-consistent) which is developed concurrently with the experimental characterization. This model proves to be a very efficient one, since it correctly reproduces the influence of temperature experimentally defined: the stress state in ferrite remains less important than in bainite (the difference never exceeds 150 MPa), whereas it is much higher in cementite. The heterogeneity of strains and stresses for each crystallographic orientation is well rendered; so is cleavage fracture normal to the {l_brace}100{r_brace} planes in ferrite (planes identified by electron back scattered diffraction during an in-situ tensile test at -150 C), which occurs sooner when temperature decreases, for a constant stress of about 700 MPa in this phase. (author)

  20. Block Copolymer-Based Supramolecular Elastomers with High Extensibility and Large Stress Generation Capability

    Science.gov (United States)

    Noro, Atsushi; Hayashi, Mikihiro

    We prepared block copolymer-based supramolecular elastomers with high extensibility and large stress generation capability. Reversible addition fragmentation chain transfer polymerizations were conducted under normal pressure and high pressure to synthesize several large molecular weight polystyrene-b-[poly(butyl acrylate)-co-polyacrylamide]-b-polystyrene (S-Ba-S) block copolymers. Tensile tests revealed that the largest S-Ba-S with middle block molecular weight of 3140k achieved a breaking elongation of over 2000% with a maximum tensile stress of 3.6 MPa and a toughness of 28 MJ/m3 while the reference sample without any middle block hydrogen bonds, polystyrene-b-poly(butyl acrylate)-b-polystyrene with almost the same molecular weight, was merely viscous and not self-standing. Hence, incorporation of hydrogen bonds into a long soft middle block was found to be beneficial to attain high extensibility and large stress generation capability probably due to concerted combination of entropic changes and internal potential energy changes originaing from the dissociation of multiple hydrogen bonds by elongation. This work was supported by JSPS KAKENHI Grant Numbers 13J02357, 24685035, 15K13785, and 23655213 for M.H. and A.N. A.N. also expresses his gratitude for Tanaka Rubber Science & Technology Award by Enokagaku-Shinko Foundation, Japan.

  1. Field report-Iidate village and Minamisoma city in Fukushima prefecture and Onagawa Nuclear Power Plants of Tohoku Electric Power

    International Nuclear Information System (INIS)

    Nakamura, Etsuji

    2011-01-01

    Although the accident of Fukushima Daiichi Nuclear Power Plants of Tokyo Electric Power Co., Inc. was foreseen to be an end with bringing the reactor a stable cooling condition and mitigating the release of radioactive materials, there would be various uncertainties and risks. The public was turned to 'nuclear power phase-out ' or 'nuclear power reduced' and Fukushima prefecture launched a restoration vision not dependent on nuclear power. In July editors joined the visit on Iidate village and Minamisoma city in Fukushima prefecture and Onagawa Nuclear Power Plants of Tohoku Electric Power Co., Inc., which was organized by Energy and Environmental Email Forum. This feature consisted of six articles based on interviews with respective mayor and discussion meeting of participants. Nuclear world would be responsible for the cooperation and support of Fukushima moving toward restoration with the same stance. Development of renewable energy utilizing damaged fields might be promoted. Respective district was tried to restore based on the trademark of 'Iidate-village in the world' or introduction of central facilities of decommission technology or medical care against radiation hazards. Onagawa Nuclear Power Plants of Tohoku Electric Power Co., Inc., which was 14.8 m above sea level, was not damaged so much by the tsunami of 13 m high and after the disaster many residents in a neighboring area came to the nuclear power plant office for the refuge. (T. Tanaka)

  2. Special feature article. Nuclear new age. Towards reform of laws and regulations

    International Nuclear Information System (INIS)

    Madarame, Haruki; Morokuzu, Muneo; Shiroyama, Hideaki; Nishiwaki, Yoshihiro; Marumo, Syunji; Suzuki, Takahiro; Hariyama, Hideo

    2007-01-01

    Since about half a century passes after the peaceful use of nuclear energy began in Japan, the safety laws and regulations of the nuclear energy becomes difficult to cope enough with the current situation without regulation structure changing. In March 2007, Tokyo University set up nuclear energy legislation study meeting' consisting of members from regulatory bodies, electric utilities, nuclear industries and others. The special feature introduces five opinions obtained through the argument in the meeting. As an example, Law for the Regulations of Nuclear Sources Material, Nuclear Fuel Material and Reactors is applied to basic design about the commercial reactors, but Electric Utilities Industry Law is applied to a detailed design, and different licensing standard is applied in each. Taking the adjustment of licensing standard with unifying these is necessary for efficiency. In addition, current law for the Regulations of Nuclear Sources Material, Nuclear Fuel Material and Reactors regulates according to the businesses such as reactor facilities, fuel fabrication plants and radioactive waste disposal. As for plural businesses, a low procedure and safety measures are demanded every each business. It is also necessary to include structure of the comprehensive licensing that assumed an enterprise running plural businesses. (T. Tanaka)

  3. A dislocation density based micromechanical constitutive model for Sn-Ag-Cu solder alloys

    Science.gov (United States)

    Liu, Lu; Yao, Yao; Zeng, Tao; Keer, Leon M.

    2017-10-01

    Based on the dislocation density hardening law, a micromechanical model considering the effects of precipitates is developed for Sn-Ag-Cu solder alloys. According to the microstructure of the Sn-3.0Ag-0.5Cu thin films, intermetallic compounds (IMCs) are assumed as sphere particles embedded in the polycrystalline β-Sn matrix. The mechanical behavior of polycrystalline β-Sn matrix is determined by the elastic-plastic self-consistent method. The existence of IMCs not only impedes the motion of dislocations but also increases the overall stiffness. Thus, a dislocation density based hardening law considering non-shearable precipitates is adopted locally for single β-Sn crystal, and the Mori-Tanaka scheme is applied to describe the overall viscoplastic behavior of solder alloys. The proposed model is incorporated into finite element analysis and the corresponding numerical implementation method is presented. The model can describe the mechanical behavior of Sn-3.0Ag-0.5Cu and Sn-1.0Ag-0.5Cu alloys under high strain rates at a wide range of temperatures. Furthermore, the overall Young’s modulus changes due to different contents of IMCs is predicted and compared with experimental data. Results show that the proposed model can describe both elastic and inelastic behavior of solder alloys with reasonable accuracy.

  4. The effect of magnetic field and high temperature on the properties of blanket ceramics

    International Nuclear Information System (INIS)

    Kizane, Gunta; Tiliks, Juris; Vitins, Aigars; Kolodinska, Elina

    2004-01-01

    This study had the following task: 1) To estimate the magnetic field (MF, 7-9 T) effect on the formation of radiation-induced defects and products of radiolysis of ceramic breeder materials (Li 4 SiO 4 , Li 2 TiO 3 ). 2) To estimate the MF effect on the parameters of tritium release from the ceramics under conditions if high-temperature radiolysis. 3) To test the MF effect for the Li 4 SiO 4 pebbles irradiated under the real condition (HFR Petten-EXOTIC-8). The MF facilitates the location of tritium in the matrix of ceramics at the irradiation at temperature below 900 K, forming additional (20 - 25 %) radiation induced defects as tritium scavenging centers. No MF effect of this kind takes place at the higher temperature. At present, there is now information about the MF effect on the formation of colloid lithium and other radiolysis. The MF decreases the parameters of tritium release, increasing the diffusion path of charged tritium particles in the grain volume of the ceramic. This is proportional to the MF intensity and the grain size of ceramics. Irradiation at a high temperature facilitates the grain growth of the ceramics enhancing the retarding effect of the MF on the tritium release. (Y. Tanaka)

  5. SMOKE-SATURATED WATER FROM FIVE GRASSES GROWING IN JAPAN INHIBITS IN VITRO PROTOCORM-LIKE BODY FORMATION IN HYBRID CYMBIDIUM

    Directory of Open Access Journals (Sweden)

    Jaime A. TEIXEIRA DA SILVA

    2013-12-01

    Full Text Available Smoke derived from the burning of plant material has been shown to stimulate seed growth of several species. In addition, several studies have reported that when smoke is condensed with water, smoke-saturated water (SSW can also stimulate the germination of orchid seeds. In this study, SSW was derived from burning the aerial part of five grasses growing in the wild in Shikoku, Japan (Arundinella hirta (Thunb. C. Tanaka var. hirta, Microstegium japonicum (Miquel Koidzumi, Miscanthus sinensis Andersson, Paspalum thunbergii Kunth ex Steud., Themeda triandra Forssk. var. japonica (Willd. Makino, all of which flower between August and October. SSW was added at three concentrations (1, 5, 10%, v/w to solid, agarized Teixeira Cymbidium (TC medium to assess the impact on in vitro organogenesis of hybrid Cymbidium, specifically on new protocorm-like body (neo-PLB formation. The SSW of all five species strongly inhibited the formation of neo-PLBs at all concentrations relative to the control (no SSW added. Since PLBs are considered to be the equivalent of somatic embryos in orchids, and since SSW is able to stimulate the germination of zygotic embryos in other plant families, the mechanism of action is clearly different between zygotic and somatic embryos.

  6. Technical approach to improvement of SPECT images

    International Nuclear Information System (INIS)

    Fukukita, Hiroyoshi

    1985-01-01

    At present, a large number of SPECT systems are being widely used in Japan, hence, it is reasonable for us to know the physical and imaging characteristics of these SPECT devices, and also to recommend the optimum utility of SPECT systems. For this reason, a survey respect of characteristics of the commercialy available SPECT devices was carried out. In addition to this, various factors which have significant influence over SPECT image quality, such as, data acquisition matrix, reconstruction filter, γ-ray attenuation correction and daily quality control procedure, were also investigated. The materials used for this study are PET/SPECT phantom, Alderson liver phantom filled with Tc-99m solution, and either LFOV-E or ZLC-7500 interfaced to Scintipac 2400 minicomputer with 256 K byte of memory. Following are the results of this study. 1) The suitable data acquisition procedure was 128 x 128 matrix for linear sampling and approximately 64 views for angular sampling. 2) Reconstructed image using pre-processing filter with Wiener and Butterworth filters provided high quality image as compared with the Ramp filter. 3) Weighted backprojection method (WBP) proposed by Tanaka was superior to other methods, such as Sorenson method and Chang method in the object with non-uniform distribution of radionuclide. 4) It was found that uniformity correction of gamma camera and precise adjustment of the center of rotation are most important to maintain the images with a high quality. (author)

  7. The time is ripe to introduce nuclear power plants in Asia

    International Nuclear Information System (INIS)

    Machi, Sueo; Odera, Mitsutoshi; Ishii, Noriyuki; Nakasugi, Hideo; Mukaiyama, Takehiko; Nagasaki, Takao; Ake, Yutaka

    2010-01-01

    While the ambitious growth in nuclear power generation is expected in China and India, a number of countries in East and South Asia such as Vietnam and Indonesia are planning to construct new nuclear power plants to meet their increasing demands for electricity. In this feature article, eight experts described the state of introduction of nuclear power plants in such countries. These were titled as 'Trends of Deployment of Nuclear Energy in Asia-FNCA Ministerial Level Meeting', 'Vietnam- National Assembly Approval of Pre-feasibility Study and its Implementation', 'Present State of Nuclear Power Introduction in Indonesia-Awaiting the Decision of the President-', 'Present Status of Volcanic Hazard Assessment for Nuclear Facilities and Case of Bataan Nuclear Power Plant in Philippines', 'State of Nuclear Power Introduction in Thailand', 'Slow Start of Nuclear Power Introduction in Malaysia', 'Nuclear Energy Development in China in the View of Asian Market' and 'Is the Rollback in the Asian Market of Japan Group Possible?' It is highly expected Japan's high level of technology and safety with nuclear power generation would lead to promote international activities and cooperation of Japan group in the Asian Market. (T. Tanaka)

  8. Radiation safety for the emergency situation of the power plant accident. Radiation safety in society and its education

    International Nuclear Information System (INIS)

    Kosako, Toshiso

    2012-01-01

    Great East Japan Earthquake and Tsunamis, and following Fukushima Daiichi Nuclear Power Accident brought about great impact on society in Japan. Accident analysis of inside reactor was studied by reactor physics or reactor engineering knowledge, while dissipation of a large amount of radioactive materials outside reactor facilities, and radiation and radioactivity effects on people by way of atmosphere, water and soil were dealt with radiation safety or radiation protection. Due to extremely low frequency and experience of an emergency, there occurred a great confusion in the response of electric power company concerned, relevant regulating competent authorities, local government and media, and related scholars and researchers, which caused great anxieties amount affected residents and people. This article described radiation safety in the society and its education. Referring to actual examples, how radiation safety or radiation protection knowledge should be dealt with emergency risk management in the society was discussed as well as problem of education related with nuclear power, radiation and prevention of disaster and fostering of personnel for relevant people. (T. Tanaka)

  9. Best Practices and Testing Protocols for Benchmarking ORR Activities of Fuel Cell Electrocatalysts Using Rotating Disk Electrode

    Energy Technology Data Exchange (ETDEWEB)

    Kocha, Shyam S.; Shinozaki, Kazuma; Zack, Jason W.; Myers, Deborah J.; Kariuki, Nancy N.; Nowicki, Tammi; Stamenkovic, Vojislav; Kang, Yijin; Li, Dongguo; Papageorgopoulos, Dimitrios

    2017-05-02

    Abstract Thin-film-rotating disk electrodes (TF-RDEs) are the half-cell electrochemical system of choice for rapid screening of oxygen reduction reaction (ORR) activity of novel Pt supported on carbon black supports (Pt/C) electrocatalysts. It has been shown that the magnitude of the measured ORR activity and reproducibility are highly dependent on the system cleanliness, evaluation protocols, and operating conditions as well as ink formulation, composition, film drying, and the resultant film thickness and uniformity. Accurate benchmarks of baseline Pt/C catalysts evaluated using standardized protocols and best practices are necessary to expedite ultra-low-platinum group metal (PGM) catalyst development that is crucial for the imminent commercialization of fuel cell vehicles. We report results of evaluation in three independent laboratories of Pt/C electrocatalysts provided by commercial fuel cell catalyst manufacturers (Johnson Matthey, Umicore, Tanaka Kikinzoku Kogyo—TKK). The studies were conducted using identical evaluation protocols/ink formulation/film fabrication albeit employing unique electrochemical cell designs specific to each laboratory. The ORR activities reported in this work provide a baseline and criteria for selection and scale-up of novel high activity ORR electrocatalysts for implementation in proton exchange membrane fuel cells (PEMFCs).

  10. Problems of probabilistic safety assessment after Fukushima Daiichi nuclear power plant accident

    International Nuclear Information System (INIS)

    Sugiyama, Naoki

    2011-01-01

    Probabilistic safety assessment (PSA) methodology to assure nuclear safety is had great expectations of lessons learned from Fukushima Daiichi nuclear power plant (NPP) accident and on the other hand this accident made actualized technical problems of PSA. Effectiveness of current PSA methodology for risk assessment was confirmed by comparing the accident development with accident scenario of PSA and equipment failure rate. From a viewpoint of nuclear safety objective and defense in depth approach of IAEA, technical problems of PSA were (1) extension of PSA for spent fuel pool and waste disposal system as well as level 3PSA for broader environmental contamination and (2) overlapping of accident scenario of plural unit site, balance of high quality plant management and preceding negation, treatment of uncertainty of external events, severe accident measure and human reliability analysis and reflection of disaster prevention capability to level 3PSA. In order to upgrade PSA technology, six proposals were described for nuclear safety and defense in depth, comprehensive evaluation scope and catch-up of latest technology, necessity of strategic preparation of PSA standard, human resources fostering and risk communication. (T. Tanaka)

  11. Dynamical Analysis of Long Fiber-Reinforced Laminated Plates with Elastically Restrained Edges

    Directory of Open Access Journals (Sweden)

    Liz G. Nallim

    2012-01-01

    Full Text Available This paper presents a variational formulation for the free vibration analysis of unsymmetrically laminated composite plates with elastically restrained edges. The study includes a micromechanics approach that allows starting the study considering each layer as constituted by long unidirectional fibers in a continuous matrix. The Mori-Tanaka method is used to predict the mechanical properties of each lamina as a function of the elastic properties of the components and of the fiber volume fraction. The resulting mechanical properties for each lamina are included in a general Ritz formulation developed to analyze the free vibration response of thick laminated anisotropic plates resting on elastic supports. Comprehensive numerical examples are computed to validate the present method, and the effects of the different mechanical and geometrical parameters on the dynamical behavior of different laminated plates are shown. New results for general unsymmetrical laminates with elastically restrained edges are also presented. The analytical approximate solution obtained in this paper can also be useful as a basis to deal with optimization problems under, for instance, frequency constraints.

  12. Never be allowable for those responsible for 3.11 Fukushima nuclear accident not to be aware

    International Nuclear Information System (INIS)

    Yoshii, Hidekatsu

    2013-01-01

    The author repeatedly asked at Diet whether safety of Japanese aged Nuclear Power Plants (NPPs) could be assured and whether it could be allowable for NPPs to construct in earthquake country of Japan judging from present state of Japanese science and technology level. Diet written inquiry for government was also prepared. Fukushima accident could be imagined and prevented if countermeasures against all power losses were prepared following the alert given when loss of external power due to collapse of transmission iron tower by land slide was observed in April 2005 and 'pull tide' and 'push tide' occurred at the Giant Tsunami of Chile Earthquake in May 1960. Responsibility of not responding to the alert should be taken by TEPCO and successive Cabinets. Lack of such adequate measures for severe accident should be also responsible for TEPCO and Cabinet. Response after all power losses should be firstly focused on depressurization of pressure vessel and seawater injection via hydrant line so as to prevent meltdown and contamination. (T. Tanaka)

  13. High Dietary Sodium Intake Assessed by Estimated 24-h Urinary Sodium Excretion Is Associated with NAFLD and Hepatic Fibrosis.

    Science.gov (United States)

    Huh, Ji Hye; Lee, Kyong Joo; Lim, Jung Soo; Lee, Mi Young; Park, Hong Jun; Kim, Moon Young; Kim, Jae Woo; Chung, Choon Hee; Shin, Jang Yel; Kim, Hyun-Soo; Kwon, Sang Ok; Baik, Soon Koo

    2015-01-01

    Although high sodium intake is associated with obesity and hypertension, few studies have investigated the relationship between sodium intake and non-alcoholic fatty liver disease (NAFLD). We evaluated the association between sodium intake assessed by estimated 24-h urinary sodium excretion and NAFLD in healthy Koreans. We analyzed data from 27,433 participants in the Korea National Health and Nutrition Examination Surveys (2008-2010). The total amount of sodium excretion in 24-h urine was estimated using Tanaka's equations from spot urine specimens. Subjects were defined as having NAFLD when they had high scores in previously validated NAFLD prediction models such as the hepatic steatosis index (HSI) and fatty liver index (FLI). BARD scores and FIB-4 were used to define advanced fibrosis in subjects with NAFLD. The participants were classified into three groups according to estimated 24-h urinary excretion tertiles. The prevalence of NAFLD as assessed by both FLI and HSI was significantly higher in the highest estimated 24-h urinary sodium excretion tertile group. Even after adjustment for confounding factors including body fat and hypertension, the association between higher estimated 24-h urinary sodium excretion and NAFLD remained significant (Odds ratios (OR) 1.39, 95% confidence interval (CI) 1.26-1.55, in HSI; OR 1.75, CI 1.39-2.20, in FLI, both P sodium values. High sodium intake was independently associated with an increased risk of NAFLD and advanced liver fibrosis.

  14. The Computation of Global Viscoelastic Co- and Post-seismic Displacement in a Realistic Earth Model by Straightforward Numerical Inverse Laplace Integration

    Science.gov (United States)

    Tang, H.; Sun, W.

    2016-12-01

    The theoretical computation of dislocation theory in a given earth model is necessary in the explanation of observations of the co- and post-seismic deformation of earthquakes. For this purpose, computation theories based on layered or pure half space [Okada, 1985; Okubo, 1992; Wang et al., 2006] and on spherically symmetric earth [Piersanti et al., 1995; Pollitz, 1997; Sabadini & Vermeersen, 1997; Wang, 1999] have been proposed. It is indicated that the compressibility, curvature and the continuous variation of the radial structure of Earth should be simultaneously taken into account for modern high precision displacement-based observations like GPS. Therefore, Tanaka et al. [2006; 2007] computed global displacement and gravity variation by combining the reciprocity theorem (RPT) [Okubo, 1993] and numerical inverse Laplace integration (NIL) instead of the normal mode method [Peltier, 1974]. Without using RPT, we follow the straightforward numerical integration of co-seismic deformation given by Sun et al. [1996] to present a straightforward numerical inverse Laplace integration method (SNIL). This method is used to compute the co- and post-seismic displacement of point dislocations buried in a spherically symmetric, self-gravitating viscoelastic and multilayered earth model and is easy to extended to the application of geoid and gravity. Comparing with pre-existing method, this method is relatively more straightforward and time-saving, mainly because we sum associated Legendre polynomials and dislocation love numbers before using Riemann-Merlin formula to implement SNIL.

  15. PET diagnosis. The decisive factor for early detection of the cancer

    International Nuclear Information System (INIS)

    Yonekura, Yoshiharu; Kusakabe, Kiyoko; Fukuda, Hiroshi; Inoue, Kentaro; Tanaka, Koichi; Murayama, Hideo; Amano, Masaharu; Oikawa, Koichi; Yamashita, Takashi

    2007-01-01

    The feature contains 8 articles concerned with the subject matter in the title. The first is a document of the interview with Dr. Yoshiharu Yonekura, the National Institute of Radiological Sciences (NIRS) President, by the editor in chief of the journal, entitled ''Twenty to Thirty years are Necessary for Development of Basic Technology''- discussed are progress of molecular imaging, present and future of positron emission tomography (PET) diagnosis. Lasting are the articles of: ''Recommendation for PET diagnosis'' by K. Kusakabe, Tokyo Women's Medical Univ.- the role of PET diagnosis in a mass examination; ''The present state and future development of PET diagnosis of cancer'' by H. Fukuda and K. Inoue, Tohoku Univ. Hospital- labeled compounds and others; ''Promotion of popularization of the diagnosis as a part of CSR (corporate social responsibility) in the local medicare- A participation of the Hospital of Chugoku Electric Power Co., Ltd. in the project'' by K. Tanaka; ''Trend of development of next generation PET equipment'' by H. Murayama, NIRS- equipments like PET/CT or PET/MRI, and with high system sensitivity (detector- and photo-elements, DOI detection, high performance circuit, etc.); ''Achievement and developing trend of the equipments in the manufacturer- Shimadzu Corp.'' by M. Amano- PET/CT; ''(the same title)- Sumitomo Heavy Industries, Ltd.'' by K. Oikawa- cyclotron and therapeutic heavy ion beam generator; and ''Research and development in Hamamatsu Photonics K.K.'' by T. Yamashita- high throughput PET and animal PET. (R.T.)

  16. The official report of the Fukushima Nuclear Accident Independent Investigation Commission

    International Nuclear Information System (INIS)

    2012-07-01

    In October 2011, the Act regarding Fukushima Nuclear Accident Independent Investigation Commission was enacted to investigate the Fukushima accident with the authority to request documents and request the legislative branch to use its investigative powers to obtain any necessary documents or evidence required. In December 2011, chairman and nine other members were appointed. After a six-month investigation, Commission had concluded. 'In order to prevent future disasters, fundamental reforms must take place covering both the structure of electric power industry and the structure of related government and regulatory agencies as well as operation processes, for both normal and emergency situations'. Main parts of report consisted of overview, conclusions and recommendations, and six findings; (1) was the accident preventable?, (2) Escalation of the accident, (3) Emergency response to the accident, (4) Spread of the damage, (5) Organizational issues in accident prevention and response and (6) the legal system. Based on the above findings, Commission made seven recommendations regarding (1) Monitoring of the nuclear regulatory body by the National Diet, (2) Reform the crisis management system, (3) Government responsibility for public health and welfare, (4) Monitoring the operators, (5) Criteria for the new regulatory body, (6) Reforming laws related to nuclear energy and (7) Develop a system of independent investigation commissions. National Diet's thorough debate and deliberate on these recommendation was highly encouraged for the future. (T. Tanaka)

  17. Prospect for introduction of nuclear power in Southeast Asia

    International Nuclear Information System (INIS)

    Matsuo, Yuji; Kouno, Seiji; Murakami, Tomoko

    2008-01-01

    Southeast Asian countries such as Indonesia, Malaysia, Philippines, Thailand and Viet Nam plan to introduce nuclear power by around 2020 with government's lead to cope with increase of electricity demand and secure energy resources. However in reality, the plan will be delayed more than several years by issues related with introduction of nuclear power. Taking into consideration of energy policy and prospect, political and economic conditions, infrastructure preparation, social and industrial systems of each country, the situation differs in countries largely. As for Viet Nam and Thailand with promotion systems prepared nuclear programs may proceed rather smoothly with some possible delay, while as for Philippines with the promotion system not well prepared it may be difficult to make earlier progress smoothly although there exists possibility of utilization of a nuclear power plant with construction works suspended. There seems no need of earlier introduction of nuclear energy in Malaysia and in Indonesia possibility of great delay of the program due to infrastructure preparation and investment environments. Japanese nuclear industry may contribute the programs through efforts of personnel training, system design and information dissemination. (T. Tanaka)

  18. The best-mix of power demand and supply. Energy system integration

    International Nuclear Information System (INIS)

    Ogimoto, Kazuhiko

    2012-01-01

    In September 2012 after nationwide discussions, Energy and Environmental Council decided 'Innovative Strategy for Energy and the Environment': (1) Realization of a society not dependent on nuclear power, (2) Realization of green energy revolution, (3) For ensuring stable supply of energy, (4) Bold implementation of reform of electricity power systems and (5) Steady implementation of global warming countermeasures. Energy problem should be considered as supply and demand of whole energy. However, long-term energy problem such as in 2050 should assume global limits of fossil fuel supply and carbon dioxide emission and then in order to realize sustainable demand and supply of energy, maximum deployment of renewable energy power in primary energy and most practicable electrification of final demand for energy conservation should be implemented. Best mix of power and energy demand and supply would be significant to some extent. This article outlined analysis of power demand and supply in a long term, future power technologies and demand side management, and problems of power system operation and their solution, and then described energy system integration to realize power and energy/society best mix. (T. Tanaka)

  19. INTRODUCTION: Wetting and dewetting in bio-related systems

    Science.gov (United States)

    Herminghaus, S.

    2005-03-01

    Research on such genuinely soft-matter related phenomena as wetting and dewetting would not be complete without reminiscence to biological systems. The recent stir around what has been known as the lotus effect, the amazing ultra-hydrophobic properties of many plants, has highlighted the interconnections of wetting with bio-systems. In the first paper of this section (Mock et al), a `biomimetic' system is conceived which imitates the properties of plant leaves with elastic hairs. The synthesis of such a system turns out to be tricky, but the progress is encouraging. The next three papers deal with surfactant layers, as they occur in many biological systems, such as the plasma membrane. Various experimental techniques, such as fluorescence microscopy (Tanaka et al), neutron reflectivity (Steitz et al), and x-ray scattering (Ahrens et al), are demonstrated as powerful tools for their investigation. The last paper (Heim et al) takes us back to where we started: the morphologies emerging upon dewetting of a liquid. This time, the full diversity of patterns is shown which appears in the deposited solute, once the liquid has evaporated. The motivation of this work is the morphology of deposition of DNA on bio-chips, which may affect the readout results of such devices. It is shown that although much can already be understood, a lot of work has still to be done, and many beautiful mechanisms may still be discovered.

  20. On the optimum energy mix

    International Nuclear Information System (INIS)

    Fujii, Yasumasa

    2011-01-01

    After the Fukushima accident occurred in March 2011, reform of Japan's basic energy plan and energy supply system was reported to be under discussion such as to reduce dependence on nuclear power. Planning of energy policy should be considered based on four evaluation indexes of 'economics'. 'environmental effects', 'stable supply of energy' and 'sustainability'. 'Stable supply of energy' should include stability of domestic energy supply infrastructure against natural disasters in addition to stable supply of overseas resources. 'Sustainability' meant long-term availability of resources. Since there did not exist an almighty energy source and energy supply system superior in terms of every above-mentioned evaluation index, it would be wise to use combining various energy sources and supply system in rational way. This combination lead to optimum energy mix, so-called 'Energy Best Mix'. The author evaluated characteristics of energy sources and energy supply system in terms of four indexes and showed best energy mix from short-, medium- and long-term perspectives. Since fossil fuel resources would deplete anyhow, it would be inevitable for human being to be dependent on non-fossil energy resources regardless of greenhouse effects. At present it would be difficult and no guarantee to establish society fully dependent on renewable energy, then it would be probable to need utilization of nuclear energy in the long term. (T. Tanaka)

  1. Development of robotic systems for the decommissioning operation of Fukushima-Daiichi nuclear reactor

    International Nuclear Information System (INIS)

    Hirose, Shigeo

    2013-01-01

    The Fukushima nuclear accident required difficult decommissioning work of Fukushima Dai-ichi Nuclear Power Station (NPS) for 40 or 50 years. Development of effective robotic systems for termination of the accident had been conducted. This article introduced some activity and discussed direction of accelerated development of robotic systems for decommissioning of Fukushima Dai-ichi NPS. Highly contaminated water was leaking from reactor building damaged by hydrogen explosion at Fukushima Dai-ichi NPS. Fundamental solution was to find leaking place at torus room and stop leaks of contaminated water by repair. For such purpose, neutral buoyancy multi-joint arm (Neutra), several ten meters long and capable of housing compact, was proposed for underwater repair work. Testing of trial manufacture of mechanical model called Neutra-I had been conducted and its housing equipment was also developed. As for inspection and repair work through a small pipe, active-wheeled snake-like robot (ACM) might be operable in such a narrow space. Arm-equipped tracked vehicle (HELIOS) could be used as a terrain adaptive crawler for inside work. Weight compensation wheeled suit for radiation protection (Wheeb) was already developed. Robotic systems should be developed for focusing attainment of on-site requirements of decommissioning work of Fukushima Dai-ichi NPS. Robotics challenge should be like that. (T. Tanaka)

  2. Quantum simulation of transverse Ising models with Rydberg atoms

    Science.gov (United States)

    Schauss, Peter

    2018-04-01

    Quantum Ising models are canonical models for the study of quantum phase transitions (Sachdev 1999 Quantum Phase Transitions (Cambridge: Cambridge University Press)) and are the underlying concept for many analogue quantum computing and quantum annealing ideas (Tanaka et al Quantum Spin Glasses, Annealing and Computation (Cambridge: Cambridge University Press)). Here we focus on the implementation of finite-range interacting Ising spin models, which are barely tractable numerically. Recent experiments with cold atoms have reached the interaction-dominated regime in quantum Ising magnets via optical coupling of trapped neutral atoms to Rydberg states. This approach allows for the tunability of all relevant terms in an Ising spin Hamiltonian with 1/{r}6 interactions in transverse and longitudinal fields. This review summarizes the recent progress of these implementations in Rydberg lattices with site-resolved detection. Strong correlations in quantum Ising models have been observed in several experiments, starting from a single excitation in the superatom regime up to the point of crystallization. The rapid progress in this field makes spin systems based on Rydberg atoms a promising platform for quantum simulation because of the unmatched flexibility and strength of interactions combined with high control and good isolation from the environment.

  3. Morphological characterisation and identification of four species of Cardicola Short, 1953 (Trematoda: Aporocotylidae) infecting the Atlantic bluefin tuna Thunnus thynnus (L.) in the Mediterranean Sea.

    Science.gov (United States)

    Palacios-Abella, José F; Rodríguez-Llanos, Javier; Mele, Salvatore; Montero, Francisco E

    2015-06-01

    Blood flukes of the genus Cardicola Short, 1953 are considered the most potentially pathogenic parasites in bluefin tuna cultures. Morphological study and genetic analyses of the ribosomal internal transcribed spacer ITS-2 and the mitochondrial cytochrome c oxidase 1 (cox1) gene fragments revealed the occurrence of four aporocotylid species (C. forsteri Cribb, Daintith & Munday, 2000, C. orientalis Ogawa, Tanaka, Sugihara & Takami, 2010, C. opisthorchis Ogawa, Ishimaru, Shirakashi, Takami & Grabner, 2011 and Cardicola sp.) in 421 Thunnus thynnus (L.) from the Western Mediterranean (274 fished from the wild and 147 from sea-cages). Cardicola opisthorchis was the most abundant species, with higher prevalence in the cage-reared fish than in those fished in the wild (21 vs 6%, p < 0.05). Adults of three species were recovered: C. forsteri from both gills and heart, C. opisthorchis from heart and C. orientalis from gills. The secondary gill lamellae were profusely infected by eggs of C. orientalis. A fourth species was found in four tunas, based on the molecular analyses of eggs apparently indistinguishable in size and shape from the eggs of C. orientalis. The findings provided evidence that infections with Cardicola spp. differed in relation to locality, host origin (wild vs cage-reared) and site of infection. It is necessary to estimate the possible different pathogenic effects of each species of Cardicola in order to take appropriate control measures.

  4. Research investigation report on Fukushima Daiichi nuclear accident

    International Nuclear Information System (INIS)

    2012-03-01

    This report was issued in February 2012 by Rebuild Japan Initiative Foundation's Independent Investigation Commission on the Fukushima Daiichi Nuclear Accident, which consisted of six members from the private sector in independent positions and with no direct interest in the business of promoting nuclear power. Commission aimed to determine the truth behind the accident by clarifying the various problems and reveal systematic problems behind these issues so as to create a new starting point by identifying clear lessons learned. Report composed of four chapters; (1) progression of Fukushima accident and resulting damage (accident management after Fukushima accident, and effects and countermeasure of radioactive materials discharged into the environment), (2) response against Fukushima accident (emergency response of cabinet office against nuclear disaster, risk communication and on-site response against nuclear disaster), (3) analysis of historical and structural factors (technical philosophy of nuclear safety, problems of nuclear safety regulation of Fukushima accident, safety regulatory governance and social background of 'Safety Myth'), (4) Global Context (implication in nuclear security, Japan in nuclear safety regime, U.S.-Japan relations for response against Fukushima accident, lessons learned from Fukushima accident - aiming at creation of resilience). Report could identify causes of Fukushima accident and factors related to resulting damages, show the realities behind failure to prevent the spread of damage, and analyze the overall structural and historical background behind the accidents. (T. Tanaka)

  5. The response of the diets of four carnivorous fishes to variations in the Yellow Sea ecosystem

    Science.gov (United States)

    Jin, Xianshi; Zhang, Bo; Xue, Ying

    2010-06-01

    The stomach contents of Spanish mackerel ( Scomberomorus niphonius), snailfish ( Liparis tanakae), anglerfish ( Lophius litulon), and Pacific cod ( Gadus macrocephalus) from the Yellow Sea during 1985-1987 and 2000-2002 were analyzed. The diets of these four carnivorous species changed over time, showing that the importance of the previous major prey, Japanese anchovy ( Engraulis japonicus), had greatly decreased, owing to its declining abundance, and that intake of Crangon affinis had increased. Spanish mackerel foraged for more food, particularly for other small pelagic species in addition to Japanese anchovy, causing an increase in its niche width in recent years, whereas the other three demersal carnivorous species had mainly targeted the small benthic shrimp C. affinis, and their niche widths had reduced in the later years. This phenomenon may be an adaptive response to changes in the food availability of the ecosystem, indicating a change in the food web and community structure of the Yellow Sea ecosystem. Changes in the composition of the diet of major predators may be an indicator of changes in a marine ecosystem.

  6. Prevent recurrence of nuclear disaster (2). Reconstruction of safety logic diagram of nuclear system

    International Nuclear Information System (INIS)

    Miyano, Hiroshi; Sekimura, Naoto; Nakamura, Takao; Narumiya, Yoshiyuki

    2012-01-01

    On March 11, 2011, severe accident occurred at multi units of nuclear power caused by natural disaster, which was the first of nuclear power in the world, and lead to nuclear disaster which contaminated a wide range of land and caused surrounding residents to evacuate for a long-term. Since Cyuetsu-oki earthquake and before this accident, Atomic Energy Society of Japan had activities to investigate 'safety of nuclear system' against earthquake beyond any expectation, identify research items and work out roadmap on future research activities. Correspondence against tsunami such as this accident was discussed but not included as proposal because of low tsunami hazards awareness. Based on this reflection and to prevent recurrence of nuclear disaster, reconsideration of nuclear safety from the standpoint of defense-in-depth against hazards beyond any expectation had been performed and proposed to establish roadmap for its realization. Basic principle of nuclear safety consisted of eleven principles so as to protect personnel and environment from harmful effects of radiation derived from nuclear facilities and their activities, which were categorized into three groups (responsibility and management system, personnel and environmental protection and prevention of accident initiation and effect mitigation). (T. Tanaka)

  7. Pressure dependence of viscosity in supercooled water and a unified approach for thermodynamic and dynamic anomalies of water

    Science.gov (United States)

    Singh, Lokendra P.; Issenmann, Bruno; Caupin, Frédéric

    2017-01-01

    The anomalous decrease of the viscosity of water with applied pressure has been known for over a century. It occurs concurrently with major structural changes: The second coordination shell around a molecule collapses onto the first shell. Viscosity is thus a macroscopic witness of the progressive breaking of the tetrahedral hydrogen bond network that makes water so peculiar. At low temperature, water at ambient pressure becomes more tetrahedral and the effect of pressure becomes stronger. However, surprisingly, no data are available for the viscosity of supercooled water under pressure, in which dramatic anomalies are expected based on interpolation between ambient pressure data for supercooled water and high pressure data for stable water. Here we report measurements with a time-of-flight viscometer down to 244K and up to 300MPa, revealing a reduction of viscosity by pressure by as much as 42%. Inspired by a previous attempt [Tanaka H (2000) J Chem Phys 112:799–809], we show that a remarkably simple extension of a two-state model [Holten V, Sengers JV, Anisimov MA (2014) J Phys Chem Ref Data 43:043101], initially developed to reproduce thermodynamic properties, is able to accurately describe dynamic properties (viscosity, self-diffusion coefficient, and rotational correlation time) as well. Our results support the idea that water is a mixture of a high density, “fragile” liquid, and a low density, “strong” liquid, the varying proportion of which explains the anomalies and fragile-to-strong crossover in water. PMID:28404733

  8. Economic and energy supply and demand outlook towards FY 2014 of Japan. Japan was in a crucial moment

    International Nuclear Information System (INIS)

    Yanagisawa, Akira; Yoshioka, Takayuki; Suzuki, Hidenori; Choi, Jongwon; Ikarii, Ryohei; Iwata, Sohei; Shibata, Yoshiaki; Ito, Kokichi

    2014-01-01

    This outlook showed prospects of economy and energy supply and demand (S and D) towards FY2014 of Japan taking account of Japanese economy recovery thanks to 'Abenomics', unclear power S and D balance, restarts of NPPs and increase in renewables dominated by solar PV. Impacts of restart of NPPs were so great and hoped prompt procedures after finishing the highest-level safety assessment. Fast expansion of renewables generating 7% of power generation and their increased burden on consumers (Feed-In-Tariff) required system improvements for adequate and sustainable introduction of renewables. Impacts of removing customs by the TPP increased energy demand due to the economic expansion by 0.9%. Primary energy supply turned to increase due to the expansion of the economic activities while electricity savings and energy conservation exerted downward pressure on demand. As for Macro economy, GDP growth slowed due to retroaction decrease by the last-minute demand of tax raise. Energy consumption decreased in two years due to slowing recovery and both natural gas and coal consumption hit new high. Steady growth of city gas, slight increase of electricity and sharp drop of fuel oil would be for energy sales. CO 2 emissions decreased in FY2014 after hit the historical high in FY2013. (T. Tanaka)

  9. Present state of nuclear power business in China

    International Nuclear Information System (INIS)

    Morokuzu, Muneo

    2011-01-01

    This article presented present state of nuclear power business in China based on latest information obtained at visit at nuclear power related facilities in December 2010. China Atomic Energy Authority (CAEA) promoted nuclear power, while National Nuclear Safety Administration (NNSA) was an independent regulatory body of nuclear power. Construction of nuclear power was promoted by three national nuclear engineering development corporations: China National Nuclear Corporation (CNNC), China Guangdon Nuclear Power Corporation (CGNPC) and State Nuclear Power Technology Corporation (SNPTC). In China, 13 nuclear power reactors were in operation and 27 under construction. Shortage of nuclear engineers became evident with rapid growth of nuclear power, which forced delay of nuclear power construction schedule. Future strategies of reactor type varied domestic, French and US ones respectively dependent on CNNC, CGNPC and SNPTC, CNNC seemed to change from third generation reactor (CNP 1000) to second one (CP 1000) due to regulatory licensing difficulty of NNSA. As for advanced reactor development, large scale PWR project, HTR project and FBR development project were proceeding. As HTR project was selected as high-priority project, an experimental reactor (HTR-10) was critical in 2000 and construction of demonstration reactor started in 2009. (T. Tanaka)

  10. Outlook of the accident at Fukushima No.1 Nuclear Power Plants and issues concerning radioactive materials in environments

    International Nuclear Information System (INIS)

    Tanaka, Shun-ichi

    2011-01-01

    Fukushima No.1 Nuclear Power Plants (NPPs) affected by a great earthquake finally suffered reactor core meltdown with loss of all cooling capability and discharged a large amount of radioactive materials to the environment. Local areas in the northwest direction from NPPs were highly contaminated with radioactive materials. In order to reduce radiation exposure, several kinds of decontamination works had been tested in contaminated areas of primary school and kindergarten or residential houses with no evacuation. Radiation mini-hotspots were scattered. Contaminated soils and rubbles having cesium of high concentration in the order of several ten or hundreds kBq/kg were accumulated in large amounts of radioactive wastes and their disposal became a big issue. Related safety guidelines were proposed based on radioactive waste disposal for nuclear facilities as well as radiation dose control of neighboring residents and disposal workers, which would not be applicable to current state of Fukushima in a high radiation background. Establishment of new radiation protection rule was highly needed to deal with this emergency based on reality within and outside the Fukushima NPPs. (T. Tanaka)

  11. Elastic and Piezoelectric Properties of Boron Nitride Nanotube Composites. Part II; Finite Element Model

    Science.gov (United States)

    Kim, H. Alicia; Hardie, Robert; Yamakov, Vesselin; Park, Cheol

    2015-01-01

    This paper is the second part of a two-part series where the first part presents a molecular dynamics model of a single Boron Nitride Nanotube (BNNT) and this paper scales up to multiple BNNTs in a polymer matrix. This paper presents finite element (FE) models to investigate the effective elastic and piezoelectric properties of (BNNT) nanocomposites. The nanocomposites studied in this paper are thin films of polymer matrix with aligned co-planar BNNTs. The FE modelling approach provides a computationally efficient way to gain an understanding of the material properties. We examine several FE models to identify the most suitable models and investigate the effective properties with respect to the BNNT volume fraction and the number of nanotube walls. The FE models are constructed to represent aligned and randomly distributed BNNTs in a matrix of resin using 2D and 3D hollow and 3D filled cylinders. The homogenisation approach is employed to determine the overall elastic and piezoelectric constants for a range of volume fractions. These models are compared with an analytical model based on Mori-Tanaka formulation suitable for finite length cylindrical inclusions. The model applies to primarily single-wall BNNTs but is also extended to multi-wall BNNTs, for which preliminary results will be presented. Results from the Part 1 of this series can help to establish a constitutive relationship for input into the finite element model to enable the modeling of multiple BNNTs in a polymer matrix.

  12. Micromechanical analysis of constitutive properties of active piezoelectric structural fiber (PSF) composites

    Science.gov (United States)

    Ng, Kenny; Dai, Qingli

    2011-04-01

    Recent studies showed that the active piezoelectric structural fiber (PSF) composites may achieve significant and simultaneous improvements in sensing/actuating, stiffness, fracture toughness and vibration damping. These characteristics can be very important in the application of civil, mechanical and aerospace structures. The PSF is fabricated by coating the piezoceramic onto the silicon carbide core fiber with electrophoretic deposition (EPD) process to overcome the fragile nature of the monolithic piezoelectric materials. The PSF composite laminates are made of longitudinally poled PSFs that are unidirectionally deployed in the polymer binding matrix. The PSF laminate transducer has electrical inputs/outputs that are delivered through a separate etched interdigital electrode layer. This study analyzed the electromechanical properties with the generalized dilute scheme for active PSF composite laminate by considering multiinclusions. The well-known Mori-Tanaka approach was used to evaluate the concentration tensor in the multi-inclusion micromechanics model. To accurately predict the transverse properties, the extended role of mixtures were applied by considering the inclusions' geometry and shape. The micromechanical finite element modeling was also conducted with representative volume element (RVE) to compare with the micromechanics analysis on the electromechanical properties. The micromechanics analysis and finite element micromechanical modeling were conducted with varied fiber geometry dimensions and volume fractions. These comparison studies indicate the combined micromechanics models with the generalized dilute scheme can effectively predict the electro-elastic properties of multi-inclusion PSF composites.

  13. Doubts to safety on nuclear power plant materials. Safety of nuclear power plants from design technology. Part 2

    International Nuclear Information System (INIS)

    Shibata, Hiroyuki

    2005-01-01

    Safety of NPPs has been doubted from design technology related with NPP materials. Fracture mechanics have been introduced to evaluate crack propagation in the areas of mechanical facilities and structures such as airplanes, ships and vessels. However multi-site cracks, which were observed simultaneously initiated and propagated around multiple rivets holes of a JAL jumbo jet crash accident, suggest the crack propagation prediction method would not be allowed technically and socially to apply to safety system design of important structures. Maintenance standards applied to NPPs and doubts on precise application of innovated nondestructive method on respective components would just mean the reduction of safety margin of the system and bring about another risk of reactor accidents. Recent experiences of a large system accident show technical difficulty to grasp the actual situation of accident precisely and such a technology should be developed to mitigate accident propagation based on limited uncertain information and limited time in order not be lead to a big accident. (T. Tanaka)

  14. Proposal strategy and policy on nuclear safety for no-more severe accidents

    International Nuclear Information System (INIS)

    2013-01-01

    Following the outspoken advice saying 'scientists and engineers concerning with nuclear power promotion and safety should be responsible for clarifying how preventable or what measures should be needed to prevent severe accidents occurring at Fukushima Daiichi nuclear power plants (NPPs)', committee on prevention of severe accidents at NPPs was established by relevant nuclear scientists and engineers involved so as to discuss basic issues to be solved from scientific and technical viewpoints. Based on the review of 'defense in depth' concept and accident analysis at Fukushima nuclear accident, four major proposals and six supplements to be established were identified such as: (1) finding mechanism of beyond imagination events for natural disaster, terrorism, and internal events, (2) reform of comprehensive safety standards and guidelines with performance basis easy to reflect latest knowledge and technology as 'back-fitting', (3) severe accidents measures, their validation, and drilling on accident management to advance procedures and develop human resources, and (4) risk communications and public disclosure of information. This article described backgrounds of committee's proposals on nuclear safety for no-more severe accidents. (T. Tanaka)

  15. The annal of british RPV steel plates for first nuclear power station in Japan (1). Unforseen accidents araised before nuclear power plant open

    International Nuclear Information System (INIS)

    Miyoshi, Shigeru

    2011-01-01

    This article described the author's experiences of reactor vessel steel plates for the first nuclear power station, Tokai-mura reactor. The station is an advanced Calder Hall type. The electrical output is 166 MWe. The reactor vessel was spherical with internal diameter of 189 cm and wall thickness of 83 mm. Material was a fine-grain, aluminum-killed steel. Each part of pressure vessel, bottom cap, belt 1, 2, 3, 4 and top cap, were prefabricated with welding of plates, then lifted into the reactor building and assembled with welding. Steel plates were imported from UK, press formed to spherical segments in Japan and transferred to the site. Ultrasonic testing, magnetic particle testing of groove face (crack detection), sizing of groove and sulfur print tests were performed as an on-site acceptance testing. Inclusions and lamination openings were observed at groove faces due to gas flame cutting. White spot was observed at rupture face of tensile test specimen. At the liquid penetration testing after back gauging of extra seam, a crack-like indication with length of less than 3 mm was observed. Reexamination of groove face by magnetic particles testing showed indications of inclusion cloud or alumina cloud. These would be cracks caused by hydrogen embrittlement. (T. Tanaka)

  16. Dynamic and static analysis of FGM skew plates with 3D elasticity based graded finite element modeling

    Directory of Open Access Journals (Sweden)

    Kamran Asemi

    Full Text Available The present article deals with static and dynamic behavior of functionally graded skew plates based on the three-dimensional theory of elasticity. On the basis of the principle of minimum potential energy and the Rayleigh Ritz method, the equations of motion are derived in conjunction with the graded finite element approach. Solution of the resulted system of equations in time domain is carried out via Newmark's time integration method. Calculations are applied for fully clamped boundary condition. In the present paper, two different sets of distributions for material properties are considered. For the static analysis, material properties are considered to vary through the thickness direction according to an exponential law. In the case of dynamic analysis, variations of the volume fractions through the thickness are assumed to obey a power law function. Thus, the effective material properties at each point are determined by the Mori-Tanaka scheme. In case of dynamic analysis, the results are obtained for uniform step loadings. The effects of material gradient index and skew angle on displacement components and stress response are studied. Results of present formulations are verified by available results of a functionally graded rectangular plate for different boundary conditions and also compared with result of a homogenous skew plate by commercial FEM software.

  17. OECD/NEA International Conference on Global Nuclear Safety Enhancement Organised in co-operation with the Nuclear Regulation Authority (NRA) of Japan On the Occasion of the 50. Anniversary of Japan Joining the OECD

    International Nuclear Information System (INIS)

    Tanaka, Shunichi; Oshima, Kenzo; Fuketa, Toyoshi; Echavarri, Luis E.; ); Ostendorff, William C.; Viktorovich Ferapontov, Alexey; Lachaume, Jean-Luc; Yoo, Guk Hee; Lyons, James E.; ); Weightman, Mike; ); Gurria, Angel; ); Ishihara, Hirotaka

    2014-04-01

    On 8 April 2014 in Tokyo, Japan, an international conference on enhancing global nuclear safety was held by the Nuclear Energy Agency (NEA) of the Organisation for Economic Co-operation and Development(OECD), in co-operation with the Nuclear Regulation Authority (NRA) of Japan. This document brings together the 12 presentations (slides) given at this conference organized in 3 sessions: 1 - Opening Session: Opening Remarks (S. Tanaka); Statement by L.E. Echavarri; Session 1 - Global Safety Enhancements: USNRC Actions in Response to the Fukushima Nuclear Accident (W.C. Ostendorff); Synergy of National and International Regulatory Efforts to Enhance Global Nuclear Safety (A. Viktorovich Ferapontov); Global Safety Enhancements, The French Nuclear Safety Authority (ASN)'s position (J.L. Lachaume); Nuclear Safety and Security Commission builds up safety and security (G.H. Yoo); Session 2 - Learning from Experience to Improve Safety: Lessons Learned from the Fukushima Dai-ichi Accident and Responses in New Regulatory Requirements (T. Fuketa); NEA Activities to Enhance the Nuclear Regulatory Framework (L.E. Echavarri); Learning from Experience to Improve Safety - its importance, its mechanisms and its challenges (J.E. Lyons); Learning from Experience to Improve Nuclear Safety - A Perspective from the UK (M. Weightman); Conclusions and Closing Remarks (A. Gurria, H. Ishihara)

  18. A fresh start of nuclear safety regulation and international perspective

    International Nuclear Information System (INIS)

    Oshima, Kenzo

    2013-01-01

    It should be explained more to the outside modestly the Fukushima nuclear accident would be a man-made complex disaster, which might be reluctant to do but not be neglected. Utmost efforts to change inward-looking attitude and reform safety culture should be done so as to prevent superficial reflection of the Fukushima nuclear accident. Since all nuclear regulatory functions ('3S': safety, security, safeguards) were integrated in Nuclear Regulation Authority (NRA), NRA and secretariat of NRA became more responsible for international response, and strengthening of organization system and human resources development would be an urgent necessity. This article described present stage of NRA focusing on international dimension including personal views. Overseas strong concern over the Fukushima nuclear accident and international communications were reviewed. The Fukushima nuclear accident started from natural disaster and enlarged as a man-made complex disaster with many human factors (mainly inaction, wilful negligence) overlapping and safety culture flawed. Examples of overseas and Japanese action plan to learn and absorb lessons from the Fukushima accident were introduced. NRA's started activities on inviting IAEA's IRRS and OPPAS as soon as ready, strengthening nuclear security measures, safeguards to prevent nuclear proliferation, bilateral cooperation and international advisors were also presented. (T. Tanaka)

  19. How to select equivalent and complimentary reversed phase liquid chromatography columns from column characterization databases.

    Science.gov (United States)

    Borges, Endler M

    2014-01-07

    Three RP-LC column characterization protocols [Tanaka et al. (1989), Snyder et al. (PQRI, 2002), and NIST SRM 870 (2000)] were evaluated using both Euclidian distance and Principal Components Analysis to evaluate effectiveness at identifying equivalent columns. These databases utilize specific chromatographic properties such as hydrophobicity, hydrogen bonding, shape/steric selectivity, and ion exchange capacity of stationary phases. The chromatographic parameters of each test were shown to be uncorrelated. Despite this, the three protocols were equally successful in identifying similar and/or dissimilar stationary phases. The veracity of the results has been supported by some real life pharmaceutical separations. The use of Principal Component Analysis to identify similar/dissimilar phases appears to have some limitations in terms of loss of information. In contrast, the use of Euclidian distances is a much more convenient and reliable approach. The use of auto scaled data is favoured over the use of weighted factors as the former data transformation is less affected by the addition or removal of columns from the database. The use of these free databases and their corresponding software tools shown to be valid for identifying similar columns with equivalent chromatographic selectivity and retention as a "backup column". In addition, dissimilar columns with complimentary chromatographic selectivity can be identified for method development screening strategies. Copyright © 2013 Elsevier B.V. All rights reserved.

  20. Report from investigation committee on the accident at the Fukushima Nuclear Power Stations of Tokyo Electric Power Company

    International Nuclear Information System (INIS)

    Koshizuka, Seiichi

    2012-01-01

    Government's Investigation Committee on the Accident at Fukushima Nuclear Power Stations of Tokyo Electric Power Company published its final report on July 23, 2012. Results of investigation combined final report and interim report published on December 26, 2011. The author was head of accident accuse investigation team mostly in charge of site response, prior measure and plant behavior. This article reported author related technical investigation results focusing on site response and prior measures against tsunamis of units 1-3 of Fukushima Nuclear Power Stations. Misunderstanding of working state of isolation condenser of unit 1, unsuitability of alternative water injection at manual stop of high-pressure coolant injection (HPCI) system of unit 3 and improper prior measure against tsunami and severe accident were pointed out in interim report. Improper monitoring of suppression chamber of unit 2 and again unsuitable work for HPCI system of unit 3 were reported in final report. Thorough technical investigation was more encouraged to update safety measures of nuclear power stations. (T. Tanaka)

  1. Risk reducation of nuclear energy and its role in energy mix

    International Nuclear Information System (INIS)

    Tanaka, Satoru

    2013-01-01

    This article was newly written for useful discussion on energy policy based on the lecture at the Japan Science Council symposium 'How to amend energy policy after the Fukushima nuclear accident' held in July 2012. Basic standpoints of energy policy and positioning of nuclear power according to the 2010 energy basic program were reviewed. Nuclear power capacity was expected to increase from 49.5 GWe in 2007 to 68 GWe in 2030 to assure energy security. The accident forced energy policy to be amended starting with nuclear power zero base. The accident actualized the safety risks of nuclear power utilization, which were discussed from fragilities of three areas: (1) design basis, (2) emergency preparedness/response and (3) regulation system. Concrete measures to reduce risks of nuclear disaster were proposed. Role and responsibility of scientists was commented. Trend of energy policy based on basic philosophy selection for three scenarios in 2030 at the lecture time was confirmed and significance of nuclear power utilization was summarized from many-sided view points. (T. Tanaka)

  2. Indispensable disaster countermeasures and resiliency in the age of complex disasters

    International Nuclear Information System (INIS)

    Hirose, Hirotada

    2012-01-01

    We live in the age of complex disasters. One disaster brings about new disaster in succession like dominoes. Disaster chain does not always stand in a line and propagate in two-dimensional extend to focus on social fragility. Later disaster would cause larger damages. The East Japan disaster was a typical complex one derived from hazards of earthquakes, tsunamis and reactor accidents, which would have significant effects on Japanese society for the future. Disaster countermeasures and resilience were important especially for 'slow onset type disaster' such as tsunami or reactor accident, which had lead-time to cause damage after initiation of hazard. Hazard simulation was beneficial for disaster countermores but not well developed to use for hazard prediction. It would be wrong and eventually lose public's trust to appear safe in uncertain state of disaster not so as to cause panic to the society. When facing a danger, people enter a 'normal bias' state and fail to adequately prepare for a disaster. People could not respond without imagination of disaster. It was highly important for coping with a disaster to perceive a hazard definitely in the age of complex disasters. (T. Tanaka)

  3. PREFACE: ELC International Meeting on Inference, Computation, and Spin Glasses (ICSG2013)

    Science.gov (United States)

    Kabashima, Yoshiyuki; Hukushima, Koji; Inoue, Jun-ichi; Tanaka, Toshiyuki; Watanabe, Osamu

    2013-12-01

    The close relationship between probability-based inference and statistical mechanics of disordered systems has been noted for some time. This relationship has provided researchers with a theoretical foundation in various fields of information processing for analytical performance evaluation and construction of efficient algorithms based on message-passing or Monte Carlo sampling schemes. The ELC International Meeting on 'Inference, Computation, and Spin Glasses (ICSG2013)', was held in Sapporo 28-30 July 2013. The meeting was organized as a satellite meeting of STATPHYS25 in order to offer a forum where concerned researchers can assemble and exchange information on the latest results and newly established methodologies, and discuss future directions of the interdisciplinary studies between statistical mechanics and information sciences. Financial support from Grant-in-Aid for Scientific Research on Innovative Areas, MEXT, Japan 'Exploring the Limits of Computation (ELC)' is gratefully acknowledged. We are pleased to publish 23 papers contributed by invited speakers of ICSG2013 in this volume of Journal of Physics: Conference Series. We hope that this volume will promote further development of this highly vigorous interdisciplinary field between statistical mechanics and information/computer science. Editors and ICSG2013 Organizing Committee: Koji Hukushima Jun-ichi Inoue (Local Chair of ICSG2013) Yoshiyuki Kabashima (Editor-in-Chief) Toshiyuki Tanaka Osamu Watanabe (General Chair of ICSG2013)

  4. Performance evaluation of beam emanation correction coil for neutron resonance spin echo spectrometer by simulation

    International Nuclear Information System (INIS)

    Maruyama, R.; Tasaki, S.; Hino, M.; Kawabata, Y.

    2004-01-01

    Neutron resonance spin echo (NRSE) method is a spectrometer which uses two RSF (resonance spin flipper) instead of the quietness magnetic field of Mezei type NSE spectrometer, and to measure the change in the speed of the neutron by using the phase difference accumulated in the section between a coupled of RSF in proportion to the resonance frequency of RSF. Having the feature that the magnetic field integration does not depend on the energy resolution by this substitution, and limiting the energy resolution of the NRSE spectrometer become only the beam emanations. The difference of the phase difference by the beam emanation can be corrected by introducing the magnetic field guide with the best magnetic field distribution for the emanation beam. In this research, the beam emanation correction coil for the high-resolution NRSE spectrometer is proposed, and the performance is evaluated by the simulation. As a result, the effectiveness of the correction method proposed by this research was shown. (T.Tanaka)

  5. On nuclear power problem in science education in Japan. Supplementary reader, authorization and scientific literacy for citizen

    International Nuclear Information System (INIS)

    Ryu, Jumpei

    2012-01-01

    Distribution of 'supplementary reader on nuclear power: Challenge! Nuclear power world' issued in 2010 and 'supplementary reader on radiation' issued in October 2011 was shelved in June 2012 by the administrative project review with revised policy of nuclear education for nuclear power promotion reflected. Great East Japan Earthquake and Fukushima Daiichi Nuclear Power Accident brought about great effects and change on fundamental conditions of citizen's life as well as national consciousness of future society in Japan. Reconsideration of scientific education should be needed taking account how to recognize 'scientific literacy' and 'scientific communication'. This article discussed nuclear power problem related with supplementary reader and nuclear power education so as to establish science education framework for 'scientific literacy' for citizen. Preparation of nuclear power education at junior high school according to guideline of new course of study was reviewed and then 'scientific literacy' based on British science higher level student textbook for public understanding of science in society was described for reference, which suggested some problem in science education in Japan although social background was different. (T. Tanaka)

  6. Compilation of anatomical, physiological and metabolic characteristics for a Reference Asian Man. Volume 2: Country reports. Results of a co-ordinated research programme 1988-1993

    International Nuclear Information System (INIS)

    1998-02-01

    The coordinated Research Programme (CRP) on Compilation of Anatomical, Physiological and Metabolic Characteristics for a Reference Asian Man has been conducted as a programme of the IAEA Regional Co-operative Agreement (RCA) for Asia and the Pacific. The CRP was conducted to provide data for radiation protection purposes that is relevant to the biokinetic and dosimetric characteristics of the ethnic populations in the Asian region The radiological protection decisions that had to be made in the RCA member States following the Chernobyl accident were a significant motivation for establishing the CRP. Funding for the RCM by the Government of Japan is gratefully acknowledged. The IAEA wishes to thank S. Kobayashi for his efforts in support of the CRP. The IAEA extends its appreciation to the Japanese National Institute of Radiological Sciences for acting as the technical secretariat to co-ordinate the work of data compilation. Specifically, the IAEA acknowledges the contributions of H. Kawamura, G. Tanaka and T. Koyanagi. Appreciation is also extended to the National Institute of Radiological Sciences, Japan, the Bhabha Atomic Research Centre, India, and the Chinese Academy of Medical Sciences for the valuable contribution they made to the CRP as hosts for the RCMS. The IAEA officers responsible for this publication were A. Moiseev and R.V. Griffith of the Division of Radiation and Waste Safety. This publication is divided into two volumes: Volume 1 contains a summary of the data and conclusions from the project and Volume 2 the reports from participating countries

  7. Short-time home coming project in evacuation zone

    International Nuclear Information System (INIS)

    Tatsuzaki, Hideo

    2011-01-01

    Accident at Fukushima Daiichi Nuclear Power Plants (NPPs) forced neighboring residents to evacuate, and evacuation zone (20 km radius from NPPs) was defined as highly contaminated and designated as no-entry zones. Residents had been obliged to live a refugee life for a longer period than expected. Short-time home coming project was initiated according to their requests. They came to the meeting place called transfer place (20 - 30 km radius from NPPs), wore protective clothing and personal dosimeter with having drinking water and came home in evacuation zone with staffs by bus. Their healthcare management professionals were fully prepared for emergency. After collecting necessary articles at home within two hours, they returned to the meeting place by bus for screening and dressing, and went back to refuge house. If screening data were greater than 13 kcpm using GM counters, partial body decontamination had been conducted by wiping and if greater than 100 kcpm, whole body decontamination was requested but not conducted. Dose rate of residents and staffs was controlled less than 1 mSv, which was alarm level of personal dosimeter. Stable iodine was prepared but actually not used. (T. Tanaka)

  8. Damage of reactor buildings occurred at the Fukushima Daiichi accident. Focusing on sequence leading to hydrogen explosions

    International Nuclear Information System (INIS)

    Naito, Masanori

    2011-01-01

    Fukushima Daiichi accident discharged enormous radioactive materials confined inside into the environment due to hydrogen explosions occurred at reactor buildings and forced many people to live the refugee life. This article described overview of Great East Japan Earthquake, specifications of Fukushima Daiichi nuclear power plants, sequence of plant status after earthquake occurrence and computerized simulation of plant behavior of Unit 1 leading to core melt and hydrogen explosion. Simulation results with estimated and assumed conditions showed water level decreased to bottom of reactor core after 4 hrs and 15 minutes passed, core melt started after 6 hrs and 49 minutes passed, failure of core support plate after 7 hrs and 18 minutes passed and through failure of penetration at bottom of pressure vessel after 7 hrs and 25 minutes passed. Hydrogen concentration at operating floor of reactor building of Unit 1 would be 15% accumulated and the pressure would amount to about 5 bars after hydrogen explosion if reactor building did not rupture with leak-tight structure. Since reactor building was not pressure-proof structure, walls of operating floor would rupture before 5 bars attained. (T. Tanaka)

  9. Interaction of microcracks with selected interfaces: Focused ion beam for a systematic crack initiation

    International Nuclear Information System (INIS)

    Marx, M.; Schaef, W.; Vehoff, H.; Holzapfel, C.

    2006-01-01

    The newly introduced combination of focused ion beam technique with high resolution scanning electron microscopy is the first method to initiate artificial microcracks with idealized crack parameters in front of selected phase- and grain boundaries. The boundaries of interest are selected after a complete sample characterization by Electron Back Scatter Diffraction and a calculation of the preferred slip systems within each grain. This combination of characterizing- and manipulating techniques on a microscale enables for the first time a systematic investigation of the interaction of short cracks with microstructural barriers to check the models of Tanaka, Navarro and De Los Rios quantitatively. In this paper, different notch geometries from single lines to penny shaped surface cracks for the initiation of artificial microcracks are presented. It is shown that not only the starting point of a crack can be selected. Further, the crack propagation path can be predetermined by initiating the crack directly on a slip system with a high Schmid factor. As a first result the influence of grain boundaries with different misorientation angles on the crack propagation rate for a directionally solidified nickel-based superalloy is shown. Finally this method is discussed as a powerful technique for grain boundary engineering

  10. Station black out of Fukushima Daiichi Nuclear Power Station Unit 1 was not caused by tsunamis

    International Nuclear Information System (INIS)

    Ito, Yoshinori

    2013-01-01

    Station black out (SBO) of Fukushima Daiichi Nuclear Power Station Unit 1 would be concluded to be caused before 15:37 on March 11, 2011 because losses of emergency ac power A system was in 15:36 and ac losses of B system in 15:37 according to the data published by Tokyo Electric Power Co. (TEPCO) in May 10, 2013. Tsunami attacked the site of Fukushima Daiichi Nuclear Power Station passed through the position of wave amplitude meter installed at 1.5 km off the coast after 15:35 and it was also recognized tsunami arrived at the coast of Unit 4 sea side area around in 15:37 judging from a series of photographs taken from the south side of the site and general knowledge of wave propagation. From a series of photographs and witness testimony, tsunami didn't attack Fukushima Daiichi Nuclear Power Station uniformly and tsunami's arrival time at the site of Unit 1 would be far later than arrival time at the coast of Unit 4 sea side area, which suggested it would be around in 15:39. TEPCO insisted tsunami passed through 1.5 km off the coast around in 15:33 and clock of wave amplitude meter was incorrect, which might be wrong. Thus SBO of Fukushima Daiichi Nuclear Power Station Unit 1 occurred before tsunami's arrival at the site of Unit 1 and was not caused by tsunami. (T. Tanaka)

  11. Effect of earthquake and tsunami. Ground motion and tsunami observed at nuclear power station

    International Nuclear Information System (INIS)

    Hijikata, Katsuichirou

    2012-01-01

    Fukushima Daiichi and Daini Nuclear Power Stations (NPSs) were struck by the earthquake off the pacific coast in the Tohoku District, which occurred at 14:46 on March 11, 2011. Afterwards, tsunamis struck the Tohoku District. In terms of the earthquake observed at the Fukushima NPSs, the acceleration response spectra of the earthquake movement observed on the basic board of reactor buildings exceeded the acceleration response spectra of the response acceleration to the standard seismic ground motion Ss for partial periodic bands at the Fukushima Daiichi NPS. As for the Fukushima Daini NPS, the acceleration response spectra of the earthquake movement observed on the basic board of the reactor buildings was below the acceleration response spectra of the response acceleration to the standard seismic ground motion Ss. Areas inundated by Tsunami at each NPS were investigated and tsunami inversion analysis was made to build tsunami source model to reproduce tide record, tsunami height, crustal movement and inundated area, based on tsunami observation records in the wide areas from Hokkaido to Chiba prefectures. Tsunami heights of Fukushima Daiichi and Daini NPSs were recalculated as O.P. +13m and +9m respectively and tsunami peak height difference was attributed to the extent of superposition of tsunami waves of tsunami earthquake type of wave source in the area along interplane trench off the coast in the Fukushima prefecture and interplane earthquake type of wave source in rather deep interplate area off the coast in the Miyagi prefecture. (T. Tanaka)

  12. Application of superheated emulsions in neutron spectrometry

    International Nuclear Information System (INIS)

    Das, Mala; Abe, Masashi; Sawamura, Teruko; Roy, S.C; Chatterjee, B.K.; Roy, B.

    2003-01-01

    'Superheated emulsions' are known to detect energetic radiations. The use of superheated emulsion as neutron spectrometry needs monoenergetic neutrons for the calibration. Because of the limitation of the availability of monoenergetic neutrons, the present work deals with the alternative method to find out the temperature-threshold neutron energy relationship for superheated emulsions. R-114 (C2C12F4, b.p.3.77degC) is used as the superheated liquid to unfold the neutron energy spectrum generated at Pb target by 45 MeV electron LINAC. The normalized response of the emulsion with temperature is obtained as an integrated spectrum, the derivative of which generates neutron energy spectrum. It is noted that R114 detector is insensitive to gamma rays at low temperature and it is only at 70degC to low energy. The present study gives an approach to the application of superheated emulsions in neutron spectrometry in a complex radiation field of both gamma rays and neutrons of different energy. (T. Tanaka)

  13. Innovative nuclear energy systems roadmap

    International Nuclear Information System (INIS)

    2007-12-01

    Developing nuclear energy that is sustainable, safe, has little waste by-product, and cannot be proliferated is an extremely vital and pressing issue. To resolve the four issues through free thinking and overall vision, research activities of 'innovative nuclear energy systems' and 'innovative separation and transmutation' started as a unique 21st Century COE Program for nuclear energy called the Innovative Nuclear Energy Systems for Sustainable Development of the World, COE-INES. 'Innovative nuclear energy systems' include research on CANDLE burn-up reactors, lead-cooled fast reactors and using nuclear energy in heat energy. 'Innovative separation and transmutation' include research on using chemical microchips to efficiently separate TRU waste to MA, burning or destroying waste products, or transmuting plutonium and other nuclear materials. Research on 'nuclear technology and society' and 'education' was also added in order for nuclear energy to be accepted into society. COE-INES was a five-year program ending in 2007. But some activities should be continued and this roadmap detailed them as a rough guide focusing inventions and discoveries. This technology roadmap was created for social acceptance and should be flexible to respond to changing times and conditions. (T. Tanaka)

  14. Root causes of the Fukushima accident and its countermeasures

    International Nuclear Information System (INIS)

    Miyano, Hiroshi

    2012-01-01

    Fukushima accident forced people to recognize significance of 'radioactivity risk' of nuclear power, which had been developed as energy sources for people using nuclear reaction producing enormous energy. 'Radioactivity risk' of nuclear power was fully investigated and this risk avoidance, namely, 'nuclear safety' had been established by multiple barriers or defense-in-depth philosophy. Among all stakeholders such as government, local government, academia, electric utilities, fabricators and others, all the people concerned with nuclear power had not been fully aware of the responsibility in their role and not taken an intrinsic action to establish 'nuclear safety', which would be the primary cause of Fukushima accident. Root causes were thought as (1) lack of comprehensive view on 'nuclear safety' assurance for operating plant, (2) lack of common consciousness to ensure nuclear safety in collaboration with society and (3) sticking to infallibility of regulatory standards and lack of leadership for their improvement. Respective countermeasures should be (1) regulatory reform from hardware overemphasis to system safety, (2) holding target in common and observation reinforcement and (3) clarification of role allotment and responsibility. Establishment of appropriate regime or system to restore from Fukushima accident and assure 'nuclear safety' of nuclear power should be proceeded in collaboration with international community. (T. Tanaka)

  15. Periodic seasonal variation of magnets level of the STB ring

    International Nuclear Information System (INIS)

    Takahashi, Shigenobu

    2003-01-01

    The Stretcher-Booster (STB) ring, a 1.2 GeV electron synchrotron, was completed in December, 1997 at the Laboratory of Nuclear Sciences (LNS), Tohoku University. The total weight more than 400 tons were placed near the STB ring, such as concrete blocks for radiation shielding and a spectrometer magnet for nuclear physics experiments after the completion of the STB ring. Re-surveying of magnets alignment was started after 2000. Very recently a new building of an experimental hall was constructed close to the building of the STB ring for use of high energy γ-ray from the electron beam. The building will give rise the changes of magnet levels due to its seasonal distortion. The measurements of the magnet level after construction are continued as well as an expected change of the closed orbit distortion (COD) in the STB ring. The serious influence of the variation of the magnet level may be a change of the beam orbit of extracted beam in the stretcher operation. Difference of the orbit distortion reaches more than 5 mm. Correlation between the COD and the seasonal change of the magnet position is not clear at the moment. However, the machine operation and the beam diagnostics are getting better recently. Continuous surveying of the magnet level will be a useful data for a feed forward correction of the beam orbit. Future subjects and prospects are discussed on surveying. (Y. Tanaka)

  16. A novel sphingomyelin/cholesterol domain-specific probe reveals the dynamics of the membrane domains during virus release and in Niemann-Pick type C.

    Science.gov (United States)

    Makino, Asami; Abe, Mitsuhiro; Ishitsuka, Reiko; Murate, Motohide; Kishimoto, Takuma; Sakai, Shota; Hullin-Matsuda, Françoise; Shimada, Yukiko; Inaba, Takehiko; Miyatake, Hideyuki; Tanaka, Hideko; Kurahashi, Atsushi; Pack, Chan-Gi; Kasai, Rinshi S; Kubo, Shuku; Schieber, Nicole L; Dohmae, Naoshi; Tochio, Naoya; Hagiwara, Kyoji; Sasaki, Yutaka; Aida, Yoko; Fujimori, Fumihiro; Kigawa, Takanori; Nishibori, Kozo; Parton, Robert G; Kusumi, Akihiro; Sako, Yasushi; Anderluh, Gregor; Yamashita, Makoto; Kobayashi, Tetsuyuki; Greimel, Peter; Kobayashi, Toshihide

    2017-04-01

    We identified a novel, nontoxic mushroom protein that specifically binds to a complex of sphingomyelin (SM), a major sphingolipid in mammalian cells, and cholesterol (Chol). The purified protein, termed nakanori, labeled cell surface domains in an SM- and Chol-dependent manner and decorated specific lipid domains that colocalized with inner leaflet small GTPase H-Ras, but not K-Ras. The use of nakanori as a lipid-domain-specific probe revealed altered distribution and dynamics of SM/Chol on the cell surface of Niemann-Pick type C fibroblasts, possibly explaining some of the disease phenotype. In addition, that nakanori treatment of epithelial cells after influenza virus infection potently inhibited virus release demonstrates the therapeutic value of targeting specific lipid domains for anti-viral treatment.-Makino, A., Abe, M., Ishitsuka, R., Murate, M., Kishimoto, T., Sakai, S., Hullin-Matsuda, F., Shimada, Y., Inaba, T., Miyatake, H., Tanaka, H., Kurahashi, A., Pack, C.-G., Kasai, R. S., Kubo, S., Schieber, N. L., Dohmae, N., Tochio, N., Hagiwara, K., Sasaki, Y., Aida, Y., Fujimori, F., Kigawa, T., Nishibori, K., Parton, R. G., Kusumi, A., Sako, Y., Anderluh, G., Yamashita, M., Kobayashi, T., Greimel, P., Kobayashi, T. A novel sphingomyelin/cholesterol domain-specific probe reveals the dynamics of the membrane domains during virus release and in Niemann-Pick type C. © FASEB.

  17. On radiation emission from a microbunched beam with wavefront tilt and its experimental observation

    Science.gov (United States)

    Geloni, Gianluca; Kocharyan, Vitali; Saldin, Evgeni

    2018-03-01

    In this paper we compare experimental observations and theory of radiation emission from a microbunched beam with microbunching wavefront tilt with respect to the direction of motion. The theory refers to the work Tanaka et al. (2004) , which predicts, in this case, exponential suppression of coherent radiation along the kicked direction. The observations refer to a recent experiment performed at the LCLS (Nuhn et al., 2015; Lutman etal., 2016), where a microbunched beam was kicked by a bend and sent to a radiator undulator. The experiment resulted in the emission of strong coherent radiation that had its maximum along the kicked direction of motion, when the undulator parameter was detuned to a value larger than the nominal one. We first analyze the theory in detail, and we confirm the correctness of its derivation according to the conventional theory of radiation emission from charged particles. Subsequently, we look for possible peculiarities in the experiment, which may not be modeled by the theory. We show that only spurious effects are not accounted for. We conclude that the experiment defies explanation in terms of the conventional theory of radiation emission.

  18. Influence of the localized initial plastic deformation on the effective thermomechanical response of metal-matrix composites

    Energy Technology Data Exchange (ETDEWEB)

    Roatta, A.; Turner, P.A.; Bertinetti, M.A.; Bolmaro, R.E.

    1999-11-01

    A generalized Eshelby model, allowing interaction among reinforcing particles under a Mori-Tanaka-like scheme, is presented. Different inclusion aspect ratios are studied in the elastic and incipient elastoplastic regime for a model SiC-Al composite. The solution of the field equations is obtained via an explicit algorithm that yields the interaction field in terms of the stress and strain variables. The particles and fibers are taken as purely elastic, and the matrix is regarded as elastic-perfectly plastic. Coefficients of thermal expansion (CTE) are calculated both under the assumption of purely elastic response and at the onset of plastic localized deformation. The simulated stress-strain curves show the influence of interaction stresses on macroscopic yield stress for different inclusion aspect ratios, with no consideration of matrix hardening. The model allows a good simulation of the thermomechanical behavior of composite materials and contributes to the understanding of the elastoplastic transition in stress-strain curves. It can also simply explain some of the most distinctive features of the mechanical behavior of composites. The model presents the possibility of controlling many input variables and geometries and simultaneously considering three-dimensional deformation of interacting inclusion-reinforced materials with low computational effort. Comparisons to experimental CTE and residual stresses are provided.

  19. Kuniichi Uno: um pensamento filosófico além do dualismo Oriente/Ocidente

    Directory of Open Access Journals (Sweden)

    Ana Amélia C. Genioli

    2012-12-01

    Full Text Available Este livro inédito do filósofo japonês Kuniichi Uno apresenta 11 ensaios sobre o corpo, a dança, o teatro, o cinema e a biopolítica com reflexões que tomam como referência obras de Nijinsky, Tanaka Min, Hijikata, Artaud, Beckett, Genet e Deleuze. A dança e os escritos de bailarinos japoneses inspiraram-no para pensar sobre o corpo a partir do movimento. O encontro desse corpo, pelos autores trazidos por Uno, não se dará de maneira “positiva”, mas pela “transgressão” da razão, pela crueldade do pensamento, pelos interstícios, pelas fissuras, pela realidade que excede o texto. O que interessa a Uno nos autores franceses é a forma como desestabilizam os aspectos mais cartesianos e dogmáticos da filosofia da razão europeia, ou seja, é aquilo que os aproxima do Oriente.

  20. Current status and future expectation concerning probabilistic risk assessment of NPPs. 1. Features and issues of probabilistic risk assessment methodology

    International Nuclear Information System (INIS)

    Yamashita, Masahiro

    2012-01-01

    Probabilistic risk assessment (PRA) of Nuclear Power Plants (NPPs) could play an important role in assuring safety of NPPs. However PRA had not always effectively used, which was indicated in Japanese government's report on Fukushima Daiichi NPP accident. At the Risk Technical Committee (RTC) of Standards Committee of Atomic Energy Society of Japan, preparation of standards (implementing criteria) focusing on PRA methodology and investigation on basic philosophy for use of PRA had been in progress. Based on activities of RTC, a serial in three articles including this described current status and future expectation concerning probabilistic risk assessment of NPPs. This article introduced features and issues of PRA methodology related to the use of PRA. Features of PRA methodology could be shown as (1) systematic and comprehensive understanding of risk, (2) support of grading approach, (3) identification of effective safety upgrade measures and (4) quantitative understanding of effects of uncertainty. Issues of PRA methodology were (1) extension of PRA application area, (2) upgrade of PRA methodology, (3) quality assurance of PRA, (4) treatment of uncertainty and (5) quantitative evaluation criteria. (T. Tanaka)

  1. Considering nuclear emergency preparedness from realities after Fukushima nuclear disaster

    International Nuclear Information System (INIS)

    Idokawa, Katsutaka

    2013-01-01

    As an ex-chief of affected town of Fukushima nuclear disaster, basic ideas were enumerated as no more accident occurring, necessity of early evacuation, all budget and right belonging to end administrator, appropriate response of government's emergency countermeasure headquarter on proposal of end administrator, failure of evacuation lead coming from government's information concealment, no more secondary damage of affected refuge, public disclosure of information, safety as the top priority with no compromise or preferred profit, new mechanism of resident's direct participation in preventing accidents, and fair review system of inspection based on checklist. Nuclear-related regulatory organizations and electric utilities should be reformed as open and transparent organization and responsible for following results of accidents. Public trust on government was completely lost after the Fukushima nuclear disaster and people should not rely on some organizations and be respective expert and foster self-defense capability so as to establish government by the people. (T. Tanaka)

  2. Ultra-high dispersion of graphene in polymer composite via solvent free fabrication and functionalization

    Science.gov (United States)

    Noh, Ye Ji; Joh, Han-Ik; Yu, Jaesang; Hwang, Soon Hyoun; Lee, Sungho; Lee, Cheol Ho; Kim, Seong Yun; Youn, Jae Ryoun

    2015-03-01

    The drying process of graphene-polymer composites fabricated by solution-processing for excellent dispersion is time consuming and suffers from a restacking problem. Here, we have developed an innovative method to fabricate polymer composites with well dispersed graphene particles in the matrix resin by using solvent free powder mixing and in-situ polymerization of a low viscosity oligomer resin. We also prepared composites filled with up to 20 wt% of graphene particles by the solvent free process while maintaining a high degree of dispersion. The electrical conductivity of the composite, one of the most significant properties affected by the dispersion, was consistent with the theoretically obtained effective electrical conductivity based on the mean field micromechanical analysis with the Mori-Tanaka model assuming ideal dispersion. It can be confirmed by looking at the statistical results of the filler-to-filler distance obtained from the digital processing of the fracture surface images that the various oxygenated functional groups of graphene oxide can help improve the dispersion of the filler and that the introduction of large phenyl groups to the graphene basal plane has a positive effect on the dispersion.

  3. Contribuição à obtenção do módulo de elasticidade do concreto utilizando modelagem micromecânica

    Directory of Open Access Journals (Sweden)

    A. H. Barbosa

    Full Text Available Expressões presentes nas normas nacionais e internacionais relacionam o módulo de elasticidade do concreto com a resistência à compressão. O concreto, considerado como material compósito trifásico, tem suas propriedades elásticas diretamente influenciadas pela zona de transição (ITZ, a qual é caracterizada por sua maior porosidade em relação à pasta de cimento. Modelos de micromecânica como os de Mori-Tanaka e esfera de três fases podem ser aplicados com bons resultados quando utilizados para a análise do concreto. Este trabalho apresenta um estudo sobre o comportamento evolutivo do módulo de elasticidade do concreto, tal estudo é feito mediante a aplicação das expressões normativas e de modelos de micromecânica. Comparado-se com os valores experimentais produzidos percebe-se uma boa concordância quando a modelagem micromecânica leva em conta a ITZ. Também é confirmada a qualidade das expressões da NBR 6118:2003 e do CEB-90.

  4. The European synchrotron radiation facility hydrostatic leveling system. Twelve years experience with a large scale hydrostatic leveling system

    International Nuclear Information System (INIS)

    Martin, D.

    2003-01-01

    The ESRF HLS (European Synchrotron Radiation Facility Hydrostatic Leveling system) are based on a water equipotential surface common to all measuring points. The ESRF instruments are composed of three parts. The captor vessel which holds the liquid, a capacitive sensor measuring the capacitance between the water surface and the electrode and a temperature sensor used to correct the dilation of water as a function of temperature between the different vessels in the system. The so-called first generation HLS was conceived and installed to fulfill three main objectives. The first, to minimize the number of leveling surveys by providing a reliable real time height difference measure over several months time period, has not been particularly successful. The second, to control the vertical movements made by the Steinsvik Maskinindustrie jacks during the machine realignment has been very successful. The HLS is regularly employed at the ESRF permitting the real time control of the machine realignment with beam in the machine. This provides a considerable savings in time at the startup for the machine as all pertinent parameters can be followed and corrected on line. Finally following machine and ground motion events in real time is generally reliable over short time spans typically in the order of 24 hours to two weeks. The second generation HLS presently installed on the Storage Ring tunnel roof on the other hand has unequivocally proved to be a reliable system. It demonstrates the usefulness of such a system when it is operating correctly. (Y. Tanaka)

  5. The circumstances of severe accident measure implementation and 'the residual risk'

    International Nuclear Information System (INIS)

    Hirano, Mitsumasa

    2011-01-01

    Time-series sequence and direct and root causes of Fukushima Daiichi accident were up to validation of Hatamura's investigation committee on the accident but it would be clear that measure against tsunamis was not good enough. Based on this unprecedented accident, revision of safety design review guide and regulatory requirements of severe accident (SA) measure were under consideration while SA measure had been implemented as public self-safety management by administrative guidance. History of SA measure preparation including the introduction of 'the residual risk' for expansion and upgrade of SA measure in new review guide of seismic design of nuclear power reactor facilities was looked back to learn lessons for better safety operation of nuclear facilities. Nuclear operators established accident management (AM) incorporating appropriate SA measure extracted from probabilistic safety assessment (PSA) in 2002, which had been expanded and reinforced by periodic safety review (PSR). At the revision of regulation in 2003, PSA became requirement of operational safety program but not mandatory as before and lost the chance of regulatory review at the PSR. Extent of SA measure had not been expanded based on latest knowledge of SA research and PSA technology. Evaluation of 'the residual risk' obtained by seismic PSA could not be reported at seismic back check so far because seismic evaluation against ground motion was obliged to be preferred. Safety regulation system based on safety culture of both nuclear operators and regulators should be established for implementation of advanced AM for a certainty. (T. Tanaka)

  6. Comparison of imaging properties of direct-type and indirect-type of flat-panel detector

    International Nuclear Information System (INIS)

    Matsumoto, Masao; Suekane, Koji; Ichimaru, Yasunobu; Ogata, Yuji; Inamura, Kiyonari; Kanai, Kouzou; Kanamori, Hitoshi

    2002-01-01

    A Flat-Panel Detector (FPD) has many advantages such as eliminating cassette handling and being able to display a preview image immediately in addition to the digital image processing and the networking. Thus, the FPD has ability to innovate the radiology department. We measured and evaluated the digital and over-all imaging properties (characteristic curves, modulation Transfer Functions, Wiener spectra and Noise Equivalent Quanta (NEQ) for the direct-type and indirect-type of FPD. The pre-sampling and overall NEQ of the indirect-type of FPD were better than the NEQ of the direct-type of FPD at lower spatial frequencies, but were worse at higher spatial frequencies. The FPD can take image data at real-time and be easy to digitalize. From these results, Screen/Film system and Computed Radiography system will be replaced by the FPD system, together with diffusion of CAD, cone beam Computed Tomography (CT) system and open-type Magnetic Resonance Imagining (MRI) system. (T. Tanaka)

  7. Formation of DNA-network embedding ferromagnetic Cobalt nano-particles

    Science.gov (United States)

    Kanki, Teruo; Tanaka, Hidekazu; Shirakawa, Hideaki; Sacho, Yu; Taniguchi, Masateru; Lee, Hea-Yeon; Kawai, Tomoji; Kang, Nam-Jung; Chen, Jinwoo

    2002-03-01

    Formation of DNA-network embedding ferromagnetic Cobalt nano-particles T. Kanki, Hidekazu. Tanaka, H. Shirakawa, Y. Sacho, M. Taniguchi, H. Lee, T. Kawai The Institute of Scientific and Industrial Research, Osaka University, Japan and Nam-Jung Kang, Jinwoo Chen Korea Advanced Institute of Science and Technology (KAIST), Korea DNA can be regarded as a naturally occurring and highly specific functional biopolymer and as a fine nano-wire. Moreover, it was found that large-scale DNA networks can be fabricated on mica surfaces. By using this network structure, we can expect to construct nano-scale assembly of functional nano particle, for example ferromagnetic Co nano particles, toward nano scale spin-electronics based on DNA circuits. When we formed DNA network by 250mg/ml DNA solution of poly(dG)-poly(dC) including ferromagnetic Co nano particles (diameter of 12nm), we have conformed the DNA network structure embedding Co nano-particles (height of about 12nm) by atomic force microscopy. On the other hand, we used 100mg/ml DNA solution, DNA can not connect each other, and many Co nano-particles exist without being embedded.

  8. Application of electron accelerator worldwide

    International Nuclear Information System (INIS)

    Machi, Sueo

    2003-01-01

    Electron accelerator is an important radiation source for radiation technology, which covers broad fields such as industry, health care, food and environmental protection. There are about 1,000 electron accelerators for radiation processing worldwide. Electron accelerator has advantage over Co-60 irradiator in term of high dose rate and power, assurance of safety, and higher economic performance at larger volume of irradiation. Accelerator generating higher energy in the range of 10 MeV and high power electron beam is now commercially available. There is a trend to use high-energy electron accelerator replacing Co-60 in case of large through-put of medical products. Irradiated foods, in particular species, are on the commercial market in 35 countries. Electron accelerator is used efficiently and economically for production of new or modified polymeric materials through radiation-induced cross-linking, grafting and polymerization reaction. Another important application of electron beam is the curing of surface coatings in the manufacture of products. Electron accelerators of large capacity are used for cleaning exhaust gases in industrial scale. Economic feasibility studies of this electron beam process have shown that this technology is more cost effective than the conventional process. It should be noted that the conventional limestone process produce gypsum as a by-product, which cannot be used in some countries. By contrast, the by-product of the electron beam process is a valuable fertilizer. (Y. Tanaka)

  9. A New Record of the Genus Pista (Polychaeta: Terebellidae from Korea: The Validity and Redescription of Pista shizugawaensis

    Directory of Open Access Journals (Sweden)

    Choi, Hyun Ki

    2015-07-01

    Full Text Available A terebellid polychaete identified as Pista shizugawaensis Nishi and Tanaka, 2006, whose species validity has been doubted, is newly reported from the southwest coast of Korea. Korean materials of the present study have several characteristics that agree well with the original description of P. shizugawaensis as follows: two pairs of branchiae on the 2nd and 3rd segments have tufts composed of many dichotomously branched filaments; the nephridial papillae are present on the 6th and 7th segments; the uncini on the anterior and middle thoracic segments possess only long-handled shafts while those on the posterior ones have additional short-handled shafts or lacking shafts; the notosetae are broadly or narrowly winged capillary. The authors examined the taxonomic value of the presence of lateral lobes on the 5th and 6th segments, which has been known as a key characteristic feature of P. shizugawaensis in the classification of Pista species. In the present study, several characteristics such as the shape of notosetae, uncinial shafts in the thoracic segments, and the presence of thin narrow lateral lobes on the 4th segment are suggested as the specific characteristics that help to distinguish P. shizugawaensis from its congeners. A key to Pista species from Korean waters is also provided.

  10. Effects of hydrodynamic chromatography on colloid-facilitated migration of radionuclides in the fractured rock.

    Science.gov (United States)

    Jen, C P; Li, S H

    2001-01-01

    The performance assessment of high level radioactive waste disposal has emphasized the role of colloids in the migration of radionuclides in the geosphere. Previous literature [Nagasaki S, Tanaka S, Suzuki A. Fast transport of colloidal particles through quartz-packed columns. J. Nucl. Sci. Technol. 1975;30(11):1136] indicates that owing to hydrodynamic chromatography the colloid velocity may not be equal to that of groundwater. Using hydrodynamic chromatography, this work investigates the effects of the size of colloidal particles on the radionuclide migration facilitated by colloids in a single fractured porous rock. Also, a methodology is proposed to develop a predictive model to assess transport within the fracture rock as well as various other phenomenological coefficients, particularly the size of colloidal particles. In addition, a fully developed concentration profile for non-reactive colloids in the fracture is developed to elucidate hydrodynamic chromatography of colloids in geological media. The external forces acting on colloidal particles hypothesized in the model proposed herein include inertial force, van der Waals attractive force, double layer force as well as gravitational force. The dispersion coefficient of colloids and the distribution coefficient for radionuclides with colloids are also considered as they pertain to the size of the colloid. In addition, the size distributions of colloids are utilized to investigate the effects of polydispersed colloids.

  11. Tabulation of comet observations.

    Science.gov (United States)

    1993-04-01

    Concerning comets: 1980 IV Černis-Petrauskas, 1985 XVII Hartley-Good, 1985 XIII P/Giacobini-Zinner, 1985 XIX Thiele, 1986 III P/Halley, 1988 I Ichimura, 1988 V Liller, 1988 XV Machholz, 1989 X P/Brorsen-Metcalf, 1989 XIX Okazaki-Levy-Rudenko, 1989 XXII Aarseth-Brewington, 1990 V Austin, 1990 XVII Tsuchiya-Kiuchi, 1990 XX Levy, 1991 I P/Metcalf-Brewington, 1991 XXIV Shoemaker-Levy, 1991l Helin-Lawrence, 1991a1 Shoemaker-Levy, 1991g1 Zanotta-Brewington, 1991h1 Mueller, 1992d Tanaka-Machholz, 1992h Spacewatch, 1992l P/Giclas, 1992m P/Wolf, 1992n P/Faye, 1992p P/Brewington, 1992q Helin-Lawrence, 1992s P/Ciffréo, 1992t P/Swift-Tuttle, 1992u P/Väisälä, 1992x P/Schaumasse, 1992y Shoemaker, 1992a1 Ohshita, 1993a Mueller, 1993d Mueller, 1993e P/Shoemaker-Levy 9, P/Encke, P/Schwassmann-Wachmann 1.

  12. Middle term prospects for Japan's safeguards

    International Nuclear Information System (INIS)

    Ogawa, T.

    2001-01-01

    Japan has responded to IAEA requirements on reinforced safeguard regulations. The IAEA additional protocol entered in force in Japan on December 1999. Japan submitted a preliminary information report to IAEA on June 2000 after joint works with the Nuclear Material Control Center (NMCC) of Japan. The first annual report was submitted to IAEA on May 2001. Another activity for the additional protocol is complementary accesses. The total 36 accesses to facilities have been done from November 2000 to September 2001. Procedures of access to managements are under discussion. MEXT (Ministry of Education, Culture, Sports, Science and Technology) has been constructing the Rokkasho Safeguards On-Site Laboratory from 1997, and the Rokkasho Safeguards Center from 2000. The Design Information Verification (DIV) is now ongoing. Much more personal resources will be needed for future inspections. Therefore, the budget for safeguards is increasing in contrast to the flat base budget for the total atomic energy. As for future activity, a MOX (Mixed Oxide Fuels) fuel processing plant is one of the issues for discussion. The construction of the MOX processing plant is supposed to begin on around 2004. The conclusion of additional protocol will be given by IAEA until end of 2002. Shift to integrated safeguards are under discussions by MEXT, NMCC and utilities of Japan parallel with IAEA. Key issues of discussion are cost saving for safeguards, development of personal resources for inspectors and the role of NMCC. (Y. Tanaka)

  13. Considering lessons learned about safety culture and their reflection to activity. After Fukushima Daiichi Nuclear Power Plant accident experience

    International Nuclear Information System (INIS)

    Obu, Etsuji; Hamada, Jun; Fukano, Takuya

    2011-01-01

    Fukushima Daiichi Nuclear Power Plant accident forced neighboring residents to evacuate for a long time and gave Public anxieties greatly and significant effects to social activities in Japan. Public trust of nuclear power was lost by not preventing the accident and future of nuclear power became reconsidered, which nuclear industry people regretted deeply. Japan Nuclear Technology Institute (JANTI) had conducted activities enhancing safety culture in nuclear industry. It would be necessary to consider improvements of accident prevention and mitigation measures after evaluating the accident in a viewpoint of 'safety culture'. Based on published information and knowledge accumulated by activities of JANTI, the accident was examined taking account of greatness of nuclear accident and its effects from the side of safety culture. Lessons learned about safety culture were pointed out as; (1) reconfirmation of specialty of nuclear technology. (2) reinforcement of questioning and learning attitudes and (3) improvement of evaluation capability of nuclear safety and safety assurance against external event. These were reflected in activities such as; (1) reconsideration of safety culture assessment, (2) strengthening further support to improve safety culture consciousness and (3) improvement of peer review activity. (T. Tanaka)

  14. Guide for understanding and evaluation of safety culture

    International Nuclear Information System (INIS)

    2008-01-01

    This report was the guide of understanding and evaluation of safety culture. Operator's activities for enhancement of safety culture in nuclear installations became an object of safety regulation in the management system. Evaluation of operator's activities (including top management's involvement) to prevent degradation of safety culture and organization climate in daily works needed understanding of safety culture and diversity of operator's activities. This guide was prepared to check indications of degradation of safety culture and organization climate in operator's activities in daily works and encourage operator's activities to enhance safety culture improvement and good practice. Comprehensive evaluation of operator's activities to prevent degradation of safety culture and organization climate would be performed from the standpoints of 14 safety culture elements such as top management commitment, clear plan and implementation of upper manager, measures to avoid wrong decision making, questioning attitude, reporting culture, good communications, accountability and openness, compliance, learning system, activities to prevent accidents or incidents beforehand, self-assessment or third party evaluation, work management, change management and attitudes/motivation. Element-wise examples and targets for evaluation were attached with evaluation check tables. (T. Tanaka)

  15. Linearized pseudo-Einstein equations on the Heisenberg group

    Science.gov (United States)

    Barletta, Elisabetta; Dragomir, Sorin; Jacobowitz, Howard

    2017-02-01

    We study the pseudo-Einstein equation R11bar = 0 on the Heisenberg group H1 = C × R. We consider first order perturbations θɛ =θ0 + ɛ θ and linearize the pseudo-Einstein equation about θ0 (the canonical Tanaka-Webster flat contact form on H1 thought of as a strictly pseudoconvex CR manifold). If θ =e2uθ0 the linearized pseudo-Einstein equation is Δb u - 4 | Lu|2 = 0 where Δb is the sublaplacian of (H1 ,θ0) and L bar is the Lewy operator. We solve the linearized pseudo-Einstein equation on a bounded domain Ω ⊂H1 by applying subelliptic theory i.e. existence and regularity results for weak subelliptic harmonic maps. We determine a solution u to the linearized pseudo-Einstein equation, possessing Heisenberg spherical symmetry, and such that u(x) → - ∞ as | x | → + ∞.

  16. Effective properties of 1-3 piezoelectric composites: effect of polarization orientation

    Science.gov (United States)

    Della, Christian N.; Shu, Dongwei

    2007-07-01

    Piezoelectric ceramic/polymer composites have been widely studied because of their theoretical interest and technological applications. The 1-3 piezoelectric composites have recently received increased attention due to their potential applications in underwater acoustics and biomedical imaging. 1-3 piezoelectric composites have piezoceramic fibers, embedded in an elastically soft polymer matrix which is either piezopassive or piezoactive. Their electromechanical properties of the piezoelectric composites can be tailored to meet specific applications and their flexibility offers an additional advantage over the brittle monolithic piezoelectric. In this paper, we study the effects of the variation of the polarization orientation of the piezoelectric materials on the effective properties of 1-3 piezoelectric composites by using the micromechanics-based Mori-Tanaka method. Results for PZT/P(VDF-TrFE) composite show that the effective electromechanical properties are not significantly affected by the polarization orientation. However, the performance of the composite is significantly affected at low volume fraction of the piezoceramic fiber. These results can provide useful information for optimizing the design of 1-3 piezoelectric composites for specific applications.

  17. Paleointensities on 8 ka obsidian from Mayor Island, New Zealand

    Directory of Open Access Journals (Sweden)

    A. Ferk

    2011-11-01

    Full Text Available The 8 ka BP (6050 BCE pantelleritic obsidian flow on Mayor Island, Bay of Plenty, New Zealand, has been investigated using 30 samples from two sites. Due to a very high paramagnetic/ferromagnetic ratio, it was not possible to determine the remanence carriers. This is despite the fact that the samples were studied intensively at low, room, and high temperatures. We infer that a stable remanence within the samples is carried by single- or close to single-domain particles. Experiments to determine the anisotropy of thermoremanence tensor and the dependency on cooling rate were hampered due to alteration resulting from the repeated heating of the samples to temperatures just below the glass transition. Nonetheless, a well-defined mean paleointensity of 57.0 ± 1.0 μT, based on individual high quality paleointensity determinations, was obtained. This field value compares very well to a paleointensity of 58.1 ± 2.9 μT, which Tanaka et al. (2009 obtained for 5500 BCE at a site 100 km distant. Agreement with geomagnetic field models, however, is poor. Thus, gathering more high-quality paleointensity data for the Pacific region and for the southern hemisphere in general to better constrain global field models is very important.

  18. Next-generation LWRs development toward realization

    International Nuclear Information System (INIS)

    Mitsumata, Hiroki; Kasai, S.; Ohga, Y.; Kurosaki, T.

    2010-01-01

    This special article introduced the round-table talk of 'next-generation LWRs development toward realization' at the issue of an intermediate evaluation report about technology development of next-generation LWRs in 2010. 'Recent trends around nuclear energy and next-generation LWRs development' and 'summary of the report' were also included. After a 2-year feasibility study on development of next-generation LWRs, the vision of this development has been established as follows; the new designs of HP-BWR and HP-PWR, based on ABWR and APWR, are to lead to a large reduction in construction and generation costs and a 30% reduction of spent fuel quantity with improved safety, 30-month construction and a design life of 80 years with 24-month operating cycle. In 2008 the project was established within the Institute of Applied Energy to pursue this vision, involving three manufacturers. Over eight years, the project is to develop designs of BWR and PWR with 1700-1800 MWe. Basic designs are to be finished by 2015, with significant deployment as new alternative reactors in Japan or internationally by 2030. (T. Tanaka)

  19. Hysteretic transitions in the Kuramoto model with inertia

    Science.gov (United States)

    Torcini, Alessandro; Olmi, Simona; Navas, Adrian; Boccaletti, Stefano

    2015-03-01

    We report finite size numerical investigations and mean field analysis of a Kuramoto model with inertia for fully coupled and diluted systems. In particular, we examine the transition from incoherence to coherence for increasingly large system size and inertia. For sufficiently large inertia the transition is hysteretic and within the hysteretic region clusters of locked oscillators of various sizes and different levels of synchronization coexist. A modification of the mean field theory developed by Tanaka, Lichtenberg, and Oishi allows to derive the synchronization curve associated to each of these clusters. We have also investigated numerically the limits of existence of the coherent and of the incoherent solutions. The minimal coupling required to observe the coherent state is largely independent of the system size and it saturates to a constant value already for moderately large inertia values. The incoherent state is observable up to a critical coupling whose value saturates for large inertia and for finite system sizes, while in the thermodinamic limit this critical value diverges proportionally to the mass. By increasing the inertia the transition becomes more complex, and the synchronization occurs via the emergence of clusters of coherently drifting oscillators. Financial support has been provided by the Italian Ministry of University and Research within the project CRISIS LAB PNR 2011-2013.

  20. Country report present status and need of human resource development in nuclear field in Vietnam

    Energy Technology Data Exchange (ETDEWEB)

    Ngo Qui Viet [Department of Organization and Scientific Human Resource Development, The Ministry of Science, Technology and Environment, Hanoi (Viet Nam); Vu Dang Ninh [Department of Administration and Personnel, The Vietnam Atomic Energy Commission, Hanoi (Viet Nam)

    2000-12-01

    Vietnam Atomic Energy Commission (VAEC) was officially established in 1976, and is a national research and development organization in the field of nuclear science and technology for peaceful purposes in Vietnam. Under the VAEC, there are three institutes and one center. Status of main facilities, such as TRIGA MARK II, neutron generator, electron accelerator MT-17, and irradiation facilities are outlined in the paper. At present, the VAEC has a total staff of about 540 persons. The number of staff appears adequate to fulfill the present task on application of isotopes and nuclear techniques. When Vietnam decides to develop nuclear power program, the demand for human resources will be significantly high. During the last five years, Vietnam has been developing and implementing a national regulatory program on Radiation Protection and Nuclear Safety. The Ministry of Science, Technology and Environment (MOSTE) have established independent Vietnam Radiation Protection and Nuclear Safety Authority (VRPA) in 1994. If the Vietnamese Government approves the proposed nuclear power program, human resources training should be a key point for all research and development directions at all revel of personnel. When looking back in the history of formation and development of nuclear science and technology in Vietnam, the international cooperation has played an extremely important role in promoting the program. The exchange of information and direct participation in concrete cooperation activities under the framework of the Forum are expected. (Tanaka, Y.)

  1. Country report present status and need of human resource development in nuclear field in Vietnam

    International Nuclear Information System (INIS)

    Ngo Qui Viet; Vu Dang Ninh

    2000-01-01

    Vietnam Atomic Energy Commission (VAEC) was officially established in 1976, and is a national research and development organization in the field of nuclear science and technology for peaceful purposes in Vietnam. Under the VAEC, there are three institutes and one center. Status of main facilities, such as TRIGA MARK II, neutron generator, electron accelerator MT-17, and irradiation facilities are outlined in the paper. At present, the VAEC has a total staff of about 540 persons. The number of staff appears adequate to fulfill the present task on application of isotopes and nuclear techniques. When Vietnam decides to develop nuclear power program, the demand for human resources will be significantly high. During the last five years, Vietnam has been developing and implementing a national regulatory program on Radiation Protection and Nuclear Safety. The Ministry of Science, Technology and Environment (MOSTE) have established independent Vietnam Radiation Protection and Nuclear Safety Authority (VRPA) in 1994. If the Vietnamese Government approves the proposed nuclear power program, human resources training should be a key point for all research and development directions at all revel of personnel. When looking back in the history of formation and development of nuclear science and technology in Vietnam, the international cooperation has played an extremely important role in promoting the program. The exchange of information and direct participation in concrete cooperation activities under the framework of the Forum are expected. (Tanaka, Y.)

  2. Light a CANDLE. An innovative burnup strategy of nuclear reactors

    International Nuclear Information System (INIS)

    Sekimoto, Hiroshi

    2005-11-01

    CANDLE is a new burnup strategy for nuclear reactors, which stands for Constant Axial Shape of Neutron Flux, Nuclide Densities and Power Shape During Life of Energy Production. When this candle-like burnup strategy is adopted, although the fuel is fixed in a reactor core, the burning region moves, at a speed proportionate to the power output, along the direction of the core axis without changing the spatial distribution of the number density of the nuclides, neutron flux, and power density. Excess reactivity is not necessary for burnup and the shape of the power distribution and core characteristics do not change with the progress of burnup. It is not necessary to use control rods for the control of the burnup. This booklet described the concept of the CANDLE burnup strategy with basic explanations of excess neutrons and its specific application to a high-temperature gas-cooled reactor and a fast reactor with excellent neutron economy. Supplementary issues concerning the initial core and high burnup were also referred. (T. Tanaka)

  3. Fukushima Daiichi Nuclear Power Plant accident and four accident investigation commission

    International Nuclear Information System (INIS)

    Koike, Takuji; Noguchi, Takahiro; Yamaguchi, Satoshi; Kondo, Kaori

    2012-01-01

    Tokyo Electric Power Co. Fukushima Daiichi Nuclear Power Plant caused discharge of a large amount of radioactive materials into the atmosphere and outflow of contaminated water into the ocean by reactor core melt (meltdown) and harsh accident accompanied by a hydrogen explosion (severe accident). At reviewing a future nuclear power policy, it was extremely important to investigate this accident for inspection of cause investigation and correspondence, and further analyze the background of the accident. For this purpose, accident investigation commission was established in national Diet, government, private enterprise, Tokyo Electric Power Co. This report summarized outlines of these four accident investigation reports that were already announced and compared about main points at issue such as direct cause of accident, measures before accidents (against earthquake, tsunami and severe accident), correspondence at the time of accident (inside nuclear power plant emergency response and residents' evacuation), and proposals and problems. Four reports clarified deficiency, clumsiness and a lot of problems to be improved for preventive measures of a enterprise and the government (administration) against accidents, accident correspondence, disaster prevention and others. In other words, four reports were placed with the starting point to solve these concrete problems steadily. (T. Tanaka)

  4. Fukushima Daiichi accidents and their influence

    International Nuclear Information System (INIS)

    Yamaguchi, Satoshi; Kondo, Kaori; Kotera, Shoichi

    2011-01-01

    The Tohoku District-off the Pacific Ocean Earthquake and resulting tsunamis occurred in March 11, 2011 and then damaged facilities and equipments of the Fukushima Daiichi nuclear power plants (NPPs). It caused reactor accidents leading to the station blackout, meltdown and discharge of a large amount of radioactive materials to the environment. Long time might be required to settle the situation and many neighboring residents were obliged to live in evacuation shelters. Due to outages of the NPPs and others, countermeasures of power demand and supply sides had been taken for stable supply. Health hazards against radioactive polluted agricultural, forestry and fishery products had been concerned and the products having radioactivity greater than concentration limits had been rejected from the market. Decontamination of contaminated soils and others had become an urgent measure to ease people's fear of environmental contamination. Financial compensation related to the damage caused by the nuclear accident was also an important issue. This report was compiled from the open information until about the middle of June. (T. Tanaka)

  5. Fukushima 1st NPPs accidents and disaster caused by the pacific coast Tsunami of Tohoku earthquake. Lessons from evaluation of the Fukushima 1st NPPs accidents

    International Nuclear Information System (INIS)

    Narabayashi, Tadashi; Sugiyama, Kenichiro

    2011-01-01

    The Great East Japan earthquake (moment magnitude 9.0) occurred in March 11, 2011. The disastrous tsunami attacked Fukushima Daiichi nuclear power plants (NPPs) after automatically shutdown by the earthquake and all motor operated pumps became inoperable due to station black out. It caused severe accident of multiple plants simultaneously such as loss of cooling function, fuel damaged and vent of containment, hydrogen explosion and discharge of large amount of radioactive materials into the environment leading to nuclear power emergency that ordered resident to evacuate or remain indoors. The situation of the accident had been reported in details by mass media and most people experienced a disaster of reactor accidents and fear of radioactivity contamination. Based on the investigation and analysis of the accident at this moment, this article consisted of overview and time sequence of the accident, lessons learned from TMI and Chernobyl accidents and root cause analysis of the accident and countermeasures. Filtered containment venting system and catalyzed hydrogen recombiners were highly recommended from the point of defense-in-depth to mitigate and prevent nuclear disaster. (T. Tanaka)

  6. The Great East Japan Earthquake and nuclear power

    International Nuclear Information System (INIS)

    2012-01-01

    The Great East Japan Earthquake caused catastrophic damage on coast of the pacific in Tohoku and Kanto regions. Fukushima Daiichi nuclear power plant (NPP) eventually lost all power/final heat sink and failed to cool reactors core, which became severe accident releasing a lot of radioactive materials to the environment and forced neighboring residents to evacuate for a long time. This feature article summarized outlines of earthquake and tsunami, state of main damage of port facilities and coastal NPPs, state of Fukushima Daiichi/NPPs, state of Higashidori, Onagawa and Tokai Daini NPPs, countermeasures of other NPPs and technical lessons on seismic and tsunami evaluation. Lessons pointed out the importance of (1) analysis of multiple segment rupture in plural hypocenter areas, (2) defining the excess probability of design ground motion and tsunami, (3) defense-in-depth design and evaluation of residual risk, (4) multiplicity, (5) measures against coastal scour by tsunami, and wave force and (6) reinforcement of ground motion and sea level observation systems. (T. Tanaka)

  7. World's trend of national nuclear power policy and long-term perspective of nuclear power and supply and demand of uranium fuels

    International Nuclear Information System (INIS)

    Matsuo, Yuji; Nishida, Naoki; Yamaguchi, Yuji; Shimogoori, Kei; Murakami, Tomoko

    2013-01-01

    Based on perspective of nuclear power reflecting latest trend of national nuclear policy, supply and demand of uranium resources until 2035 was evaluated based on latest data. After the Fukushima nuclear accident, Germany and Italy dramatically changed nuclear power to phase out, while United States, Russia, France and Korea as well as China and India continued to promote nuclear power with no essential change of policy. Thus world's nuclear power capacity was foreseen to expand from 389 GW (2010) to 471 GW (2035, low growth case) and 760 GW (2035, high growth case). Following sharp increase of uranium cost after 2005, investment on natural uranium development became active and new operation start of uranium enrichment plants was anticipated in US and Europe, and then both supply and demand of natural uranium and uranium enrichment service would tend to relax until around 2020 and until 2035 extreme tightness of supply and demand might not occur even for high growth case. Uranium demand of Asian region including China and India would be largely expanded with natural uranium from Africa and Australia and uranium enrichment services from US, and Asian high overseas dependence would be continued. (T. Tanaka)

  8. Life estimation of low-cycle fatigue of pipe elbows. Proposed criteria of low-cycle fatigue life under the multi-axial stress field

    International Nuclear Information System (INIS)

    Ando, Kotoji; Takahashi, Koji; Matsuo, Kazuya; Urabe, Yoshio

    2013-01-01

    Pipe elbows were important parts frequently used in the pipelines of nuclear power, thermal power and chemical plants, and their integrity needed to be assured under seismic loads and thermal stresses considering local wall thinning or complex stress distribution due to special configuration different from straight pipe. This article investigated in details elastic-plastic stress-strain state of pipe elbow using finite element analysis and clarified there existed high bi-axial stress field at side inner surface of pipe elbow axial cracks initiated. Bi-axial stress factor was around 0.6 for sound elbow and up to 0.95 for local wall thinning at crown. Fracture strain of 1.15 was reduced to around 0.15 for bi-axial stress factor from 0.6 to 0.9. Normalized fatigue life for bi-axial stress field (0.6 - 0.8) was largely reduced to around 15, 19 and 10% of fatigue life of uni-axial state dependent on material strength level. Proposed revised universal slopes taking account of multi-axial stress factor could explain qualitatively effects of strain range, internal pressure and ratchet strain (pre-strain) on low-cycle fatigue life of pipe elbow. (T. Tanaka)

  9. Rootstocks for 'Tahiti' lime

    Directory of Open Access Journals (Sweden)

    Neusa Maria Colauto Stenzel

    2004-04-01

    Full Text Available The 'Tahiti' lime (Citrus latifolia Tanaka is an important commercial citrus cultivar in Brazil. 'Rangpur' lime has being used as its main rootstock, but it is susceptible to root rot caused by Phytophthora, reducing tree longevity. An experiment was set up in a randomized block design, with three trees per plot of each rootstock and four replicates, and run for 12 years, aiming to compare the performance of 'IAC-5 Tahiti' lime, budded on 'Rangpur' lime (Citrus limonia Osb.; 'C-13' citrange (Citrus sinensis (L. Osb. × Poncirus trifoliata (L. Raf.; 'African' rough lemon (Citrus jambhiri Lush.; 'Volkamer' lemon (Citrus volkameriana Ten. & Pasq.; trifoliate orange (Poncirus trifoliata (L. Raf.; 'Sunki' mandarin (Citrus sunki Hort. ex Tan. and 'Cleopatra' mandarin (Citrus reshni Hort. ex Tan.. Eleven years after the establishment of the orchard, trees with the greatest canopy development were budded on 'C-13' citrange and 'African' rough lemon, and both differed significantly from trees budded on trifoliate orange, 'Sunki' and 'Cleopatra' mandarins, which presented the smallest canopy development. Trees budded on 'Rangpur' lime and 'C-13' citrange had the highest cumulative yields, and were different from trees budded on trifoliate orange, 'Cleopatra' and 'Sunki' mandarins. There was no rootstock effect on mean fruit weight and on the total soluble solid/acid ratio in the juice. The 'Rangpur' lime and the 'Cleopatra' mandarin rootstocks reduced longevity of plants.

  10. What Iitate village was deprived of by the Fukushima nuclear disaster

    International Nuclear Information System (INIS)

    Ozawa, Shoji

    2013-01-01

    Iitate village was located at the north of Abukuma Heights separating Pacific Ocean coast and Abukuma river basin. On March 15, 2011, radioactive plume emitted from Fukushima Daiichi unit 2 reactor fell down on the village by snow and rain and contaminated cultivated lands with high concentration. About 75% of village was forest area. 'Regional new energy vision' using woody energy was planned in 2005 and wood chip boilers were introduced at the old people home in 2009. Regional district heating system could be introduced in the future, but in vain due to contamination. Mushrooms and others were badly contaminated up to as high as 76 kBq/kg with cesium. 'Minor subsistence' could not be maintained any more due to contamination. In October 2012 decontamination works for resident places were started so as for residents to come home gradually. Forest areas were not decontaminated excepting neighboring places to residents. Restoration was only expected in the capsule and regional natural environments - village mountain - were left cut off. (T. Tanaka)

  11. Grain size and nanoscale effects on the nonlinear pull-in instability and vibrations of electrostatic actuators made of nanocrystalline material

    Science.gov (United States)

    Gholami, R.; Ansari, R.

    2018-01-01

    Presented herein is the study of grain size, grain surface energy and small scale effects on the nonlinear pull-in instability and free vibration of electrostatic nanoscale actuators made of nanocrystalline silicon (Nc-Si). A Mori-Tanaka micromechanical model is utilized to calculate the effective material properties of Nc-Si considering material structure inhomogeneity, grain size and grain surface energy. The small-scale effect is also taken into account using Mindlin’s strain gradient theory. Governing equations are derived in the discretized weak form using the variational differential quadrature method based on the third-order shear defamation beam theory in conjunction with the von Kármán hypothesis. The electrostatic actuation is modeled considering the fringing field effects based upon the parallel plate approximation. Moreover, the Casimir force effect is considered. The pseudo arc-length continuation technique is used to obtain the applied voltage-deflection curve of Nc-Si actuators. Then, a time-dependent small disturbance around the deflected configuration is assumed to solve the free vibration problem. By performing a numerical study, the influences of various factors such as length scale parameter, volume fraction of the inclusion phase, density ratio, average inclusion radius and Casimir force on the pull-in instability and free vibration of Nc-Si actuators are investigated.

  12. Low voltage electron beam accelerators

    International Nuclear Information System (INIS)

    Ochi, Masafumi

    2003-01-01

    Widely used electron accelerators in industries are the electron beams with acceleration voltage at 300 kV or less. The typical examples are shown on manufactures in Japan, equipment configuration, operation, determination of process parameters, and basic maintenance requirement of the electron beam processors. New electron beam processors with acceleration voltage around 100 kV were introduced maintaining the relatively high dose speed capability of around 10,000 kGy x mpm at production by ESI (Energy Science Inc. USA, Iwasaki Electric Group). The application field like printing and coating for packaging requires treating thickness of 30 micron or less. It does not require high voltage over 110 kV. Also recently developed is a miniature bulb type electron beam tube with energy less than 60 kV. The new application area for this new electron beam tube is being searched. The drive force of this technology to spread in the industries would be further development of new application, process and market as well as the price reduction of the equipment, upon which further acknowledgement and acceptance of the technology to societies and industries would entirely depend. (Y. Tanaka)

  13. Proteção da gema e épocas de forçamento da brotação na enxertia da lima ácida 'Tahiti' Bud protection and timing of bud break treatments on scion, in grafting of Tahiti lime

    Directory of Open Access Journals (Sweden)

    Dierlei dos Santos

    2009-06-01

    Full Text Available A produção de mudas de citros em recipientes é uma tecnologia recente, portanto o sistema de produção encontra-se em aperfeiçoamento, havendo necessidade de informações em várias etapas do sistema produtivo, entre elas os métodos de forçamento da brotação pós-enxertia. Objetivou-se, neste trabalho, estudar o efeito da cobertura das gemas com fitas plásticas e da época de forçamento da brotação sobre o pegamento e desenvolvimento de enxertos da lima ácida 'Tahiti'. O porta-enxerto utilizado foi o limoeiro 'Cravo' (Citrus limonia Osbeck, oriundo da germinação de sementes, e a variedade copa a limeira ácida 'Tahiti' (Citrus latifolia Tanaka. Foram testadas épocas de forçamento de brotação da enxertia (10, 15, 20, 25, 30 e 35 dias após a realização da enxertia e formas de proteção do enxerto (gema coberta e gema exposta. Após a enxertia as plantas foram mantidas em casa de vegetação com esquema de irrigação por gotejamento. O delineamento experimental foi em blocos casualizados, com cinco repetições e 3 plantas por parcela. Não houve interação entre os fatores estudados, sendo que o índice de pegamento dos enxertos não foi influenciado pelos tratamentos e a cobertura total da borbulha pela fita plástica favoreceu a dormência da gema. O forçamento da brotação do enxerto de lima ácida 'Tahiti', utilizando o método de curvamento do porta-enxerto apresentou os melhores resultados quando esse foi realizado aos 10 dias após a enxertia.The production of citrus nursery trees in portable containers is a new developing technology and requires investment in research to acquire information on various stages of their production, including the methods to force post grafting bud break. The aim of this work was to investigate the effect of the coverage of buds with plastic tapes as well as the time to force bud break on the establishment and development of 'Tahiti' lime scions. The rootstock used was the 'Rangpur

  14. Avaliação do potencial hídrico foliar, umidade do solo e temperatura do ar no período pré- florescimento dos citros Evaluation of the leaf water potencial, soil humidity and air temperature on the pre-bloom of citrus

    Directory of Open Access Journals (Sweden)

    Maria do Céu Monteiro da Cruz

    2007-10-01

    Full Text Available O trabalho foi conduzido em um pomar de citros localizado no Setor de Fruticultura do Departamento de Fitotecnia da Universidade Federal de Viçosa-UFV/Viçosa-MG, no período de março a setembro de 2004. O objetivo foi avaliar a influência do potencial hídrico das folhas e do solo sobre o florescimento da tangerineira 'Poncã', laranjeira 'Serra d'Água'e limeira ácida 'Tahiti' nas condições climáticas de Viçosa-MG. A temperatura do ar (ºC e a precipitação pluviométrica (mm foram avaliadas diariamente durante o período experimental. O potencial hídrico no solo e nas folhas foi avaliado em dois horários (7:00 às 8:00 h manhã e 13:00 às 14:00 h tarde. As cultivares utilizadas foram laranjeira 'Serra d'Água'(Citrus sinensis (L. Osb., tangerina 'Poncã' (Citrus reticulata Blanco e limeira ácida 'Tahiti' (Citrus latifolia Tanaka., enxertadas sobre limoeiro 'Cravo' (Citrus limonia Osb.. Observou-se que o potencial hídrico foliar dos citros diminuiu sob condições de altas temperaturas e déficit hídrico no solo, entretanto, varia em função dos cultivares, observando-se os maiores valores para a limeira 'Tahiti'. O florescimento ocorreu após um período de baixas temperaturas seguido por uma redução do potencial hídrico do solo. A limeira ácida 'Tahiti' é mais precoce, quando comparada com a tangerineira 'Poncã' e a laranjeira 'Serra D'Água'.This study was carried out to evaluate the influence of leaf and soil water potential on flowering of 'Ponkan' mandarin, 'Tahiti' acid lime, and 'Serra d'Água' orange trees under the climate conditions of Viçosa State de Minas Gerais. The experiment was carried out at the Federal University of Viçosa-UFV, in an orchard located in the Fruit crop Sector of the Crop Sciences Department in the period of March to September of 2004. Were evaluate daily during the experimental period the air temperature (ºC and the pluvial precipitation (mm. The soil and the leaf water potential ware

  15. A study of the life history of brazilian sardine, Sardinella brasiliensis: II. spawning in 1970 and 1971

    Directory of Open Access Journals (Sweden)

    Yasunobu Matsuura

    1975-01-01

    Full Text Available Distribution and abundance of eggs of Sardinella brasiliensis (=S. aurita, are presented for the years 1970 and 1971 and compared with that of the previous year (1969. The spawning size of three spawning seasons was calculated using Tanaka's method. Incubation time of sardine eggs was estimated using the method of Ahlstrom. During three spawning seasons a considerable change in the relative spawning size was observed. The spawning season (during spring and summer in the southern hemisphere of 1970-71 was poor when compared with those of 1969-70 and 1971-72. A slight change in the average diameter of eggs in different spawning seasons was also observed. The relation between oceanographie conditions and spawning size was analysed. It is suggested that the warm water covering the spawning ground during the 1970-71 spawning season may have caused an unsuccessful spawning in this year.O presente trabalho apresenta a distribuição e abundância de ovos de sardinha verdadeira, Sardinella brasiliensis (=S. aurita, na costa sul do Brasil nos anos de 1970 e 1971. Um dos principais objetivos do estudo quantitativo de ovos e larvas de peixes é estimar o tamanho do estoque, através da abundância de ovos desovados. Com essa finalidade, a computação da abundância de ovos de sardinha verdadeira foi feita usando o método apresentado por Tanaka (1955. O tempo de incubação dos ovos de sardinha foi estimado com base no método da Ahlstrom (1943. A quantidade de ovos desovados variou durante os tres anos (1969 a 1971. Foi feita uma comparação entre a abundância total de ovos desovados e a freqüência de ocorrência de ovos nas estações da região estudada. Os índices de abundância mostram que a desova na época de 1970-71 foi muito fraca, comparada com as de 1969-70 e de 1971-72. Para esclarecer a relação entre a variação anual de tamanho da desova e a condição ambiental, foi analisada a temperatura e salinidade da água na area de desova. Os

  16. Low temperature storage of NAA, GA3 and 2,4-D treated citrus budsticks Armazenamento em baixa temperatura de hastes porta-borbulhas de citros tratadas com ANA, GA3 e 2,4-D

    Directory of Open Access Journals (Sweden)

    Luiz Carlos Chamhum Salomão

    2008-01-01

    Full Text Available Cold storage allows citrus budstick conservation for several months, although gradual bud viability loss and abscission of leaf petioles is observed. This study aimed to maintain bud viability reducing leaf petiole abscission in budsticks of 'Baianinha' and 'Valencia' sweet oranges (C. sinensis Osbeck, 'Tahiti' lime (C. latifolia Tanaka, and 'Murcott' tangor (C. sinensis × C. reticulata, using NAA, GA3, 2,4-D, and low temperature storage. After a 15-minutes-immersion in distilled water and NAA and GA3 solutions at concentrations of 10, 100, 500 and 1000 µmol L-1, and 2,4-D solutions at concentrations of 1, 10, 50 and 100 µmol L-1, the shoots were stored in polyethylene bags at 5 ± 1ºC for 74 days. Percentage of leaf petiole abscission, fresh and dry matter losses, bud viability, and growth flush were evaluated. NAA and 2,4-D had the highest efficiency for petiole abscission inhibition, reaching almost 99% of success. The packaging system and shoot storage under low temperature efficiently reduced fresh and dry matter losses. Bud viability of 'Baianinha', 'Valencia' and 'Murcott' shoots was not reduced by storage, maintaining above 95% of grafting success. NAA, GA3 and 2,4-D treatments had no influence on sprout growth.O armazenamento refrigerado possibilita a conservação de hastes porta-borbulhas de citros por vários meses, embora ocorra perda gradual da viabilidade das borbulhas e abscisão dos pecíolos foliares. Este estudo objetivou manter a viabilidade das borbulhas e reduzir a abscisão dos pecíolos foliares das hastes porta-borbulhas das laranjeiras 'Baianinha' e 'Valência'(C. sinensis Osbeck, da lima ácida 'Tahiti'(C. latifolia Tanaka e da tangoreira 'Murcote' (C. sinensis × C. reticulata por meio do tratamento com ANA, GA3, 2,4-D e armazenamento refrigerado. As hastes foram imersas por 15 minutos em água destilada e em soluções com os reguladores de crescimento ANA e GA3 nas concentrações 10, 100, 500 e 1000 µmol L-1 e

  17. The Tyrrhena-Malea Volcanic Province, Mars: Overview

    Science.gov (United States)

    Williams, D.; Greeley, R.; Ferguson, R.; Kuzmin, R.; McCord, T.; Combe, J.-P.; Head, J.; Xiao, L.; Manfredi, L.; Poulet, F.; Pinet, P.; Baratoux, D.; Plaut, J. J.; Raitala, J.; Neukum, G.

    2008-09-01

    `softened' appearance of their surfaces, but they do contain pedestal and ejecta flow craters and large, smooth, bright plateaus in their central depressions. This morphology is indicative of a surface with not only a high water ice content, but also a more consolidated material that is less susceptible to degradation (relative to the other four volcanoes). We suggest that Malea and Pityusa (and possibly Peneus) Paterae are Martian equivalents to Earth's giant calderas (e.g., Yellowstone, Long Valley) that erupted large volumes of volcanic materials, and that Malea and Pityusa are probably composed of either lava flows or ignimbrites. HRSC and OMEGA spectral data indicate that dark gray to slightly red materials (often represented as blue or black pixels in HRSC color images), found in the patera floors and topographic lows throughout the T-MVP, have a basaltic composition. A key issue is whether this dark material represents concentrations of underlying basaltic material exposed by aeolian winnowing, or if the material was transported from elsewhere on Mars by regional winds. Understanding the provenance of these dark materials may be the key to understanding the volcanic diversity of the Tyrrhena-Malea Volcanic Province. References [1] Crown, D. and Greeley, R. (2007) U.S. Geol. Surv. Sci. Inves. Ser. Map 2936. [2] Gregg, T., et al. (1998) U.S. Geol. Surv. Map I- 2556. [3] Leonard, G. and Tanaka, K. (2001) U. S. Geol. Survey Misc. Invest. Series Map I-2694. [4] Kolb, E. and Tanaka, K. (2008) Geologic Map of the Planum Australe Region of Mars. U. S. Geol. Survey. Misc. Investigation Series, in review. [5] Peterson, J. (1978) Proc. 9th LPSC, 3411-3432.

  18. Abstracts of the annual Planetary Geologic Mappers Meeting, June 18-19, 2001, Albuquerque, New Mexico

    Science.gov (United States)

    Parker, Timothy J.; Tanaka, Kenneth L.; Senske, David A.

    2002-01-01

    The annual Planetary Geologic Mappers Meeting serves two purposes. In addition to giving mappers the opportunity to exchange ideas, experiences, victories, and problems with others, presentations are reviewed by the Geologic Mapping Subcommittee (GeMS) to provide input to the Planetary Geology and Geophysics Mapping Program review panel’s consideration of new proposals and progress reports that include mapping tasks. Funded mappers bring both oral presentation materials (slides or viewgraphs) and map products to post for review by GeMS and fellow mappers. Additionally, the annual meetings typically feature optional field trips offering earth analogs and parallels to planetary mapping problems. The 2001 Mappers Meeting, June 18-19, was convened by Tim Parker, Dave Senske, and Ken Tanaka and was hosted by Larry Crumpler and Jayne Aubele of the New Mexico Museum of Natural History and Science in Albuquerque, New Mexico. Oral presentations were given in the Museum’s Honeywell Auditorium, and maps were posted in the Sandia Room. In addition to active mappers, guests included local science teachers who had successfully competed for the right to attend and listen to the reports. It was a unique pleasure for mappers to have the opportunity to interact with and provide information to teachers responding so enthusiastically to the meeting presentation. On Sunday, June 17, Larry and Jayne conducted an optional pre-meeting field trip. The flanks of Rio Grande Rift, east and west of Albuquerque and Valles Caldera north of town presented tectonic, volcanic, and sedimentary examples of the Rift and adjoining areas analogous to observed features on Mars and Venus. The arid but volcanically and tectonically active environment of New Mexico’s rift valley enables focus on features that appear morphologically young and spectacular in satellite images and digital relief models. The theme of the trip was to see what, at orbiter resolution, "obvious" geologic features look like at

  19. Influencia del nódulo de grafito en la rotura por fatiga de contacto de una fundición nodular. // influence of the graphite nodule in the contact fatigue failure of nodular foundry.

    Directory of Open Access Journals (Sweden)

    C. Figueroa

    2005-01-01

    Full Text Available El presente trabajo muestra una metodología para calcular el número de ciclos necesarios durante la formación de grietassubsuperficiales, en las fundiciones nodulares sometidas a fatiga de contacto.En esta metodología se tuvo en consideración que para calcular el número de ciclos totales hasta la rotura eraimprescindible tener en cuenta la cantidad de ciclos hasta que la grieta se iniciara. En este sentido se utilizó la expresiónpropuesta por Tanaka donde se toma en cuenta la geometría de un defecto y la energía de deformación alrededor de este, lacual puede ser determinada por la expresión de Petch.Las variaciones dimensionales que sufre el nódulo de grafito bajo la acción de las cargas de contacto fueron determinadascon precisión utilizando el método de los elementos finitos (EF.Para determinar la cantidad de ciclos durante la propagación de la grieta se utilizó la expresión de Paris y se consideró elmaterial con propiedades isotrópicas. El factor de intensificación de tensiones se determinó a partir de la expresión deMurakami, aquí se tuvo en cuenta que la grieta se propagaría en una dirección y ángulo determinado. Durante los cálculosse consideró que en el mecanismo de iniciación de grietas estuvo presente el movimiento de las dislocaciones cuyo factorde irreversibilidad tiene una influencia significativa.Palabras claves: Fundiciones nodulares, elementos finitos, rotura.____________________________________________________________________________AbstractThe present paper states a methodology that allows to calculate the number of necessary cycles during theformation of undersurface cracks in nodular foundries subjected to contact fatigue.In this methodology it was indispensable to keep in mind the quantity of cycles in order to calculate thenumber of total cycles until the crack began. In this sense the expression proposed by Tanaka was usedwhere its takes into account the geometry of a defect and the

  20. Muon tomography of the Soufrière of Guadeloupe (Lesser Antilles): Comparison with other geophysical imaging methods and assessment of volcanic risks

    Science.gov (United States)

    Gibert, D.; Lesparre, N.; Marteau, J.; Taisne, B.; Nicollin, F.; Coutant, O.

    2011-12-01

    Density tomography of rock with muons of cosmic origin measures the attenuation of the flux of particles crossing the object of interest to derive its opacity, i.e. the quantity of matter encountered by the particles along their trajectories. Recent progress in micro-electronics and particle detectors make field measurement possible and muon density tomography is gaining a growing interest (e.g. Tanaka et al., 2010; Gibert et al., 2010). We have constructed field telescopes based on the detectors of the OPERA experiment devoted to study neutrino oscillation (Lesparre et al., 2011a). Each telescope may be equipped with a variable number of detection matrices with 256 pixels. The spatial resolution is adaptable and is typically of about 20 meters (Lesparre et al., 2010). The telescopes are portable autonomous devices able to operate in harsh field conditions encountered on tropical volcanoes. The total power consumption is less than 40W, and an Ethernet link allows data downloading and remote control of the electronic devices and on-board computers. Larger high-resolution telescopes are under construction. The instruments have been successfully tested on the Etna and Soufrière of Guadeloupe volcanoes were a telescope is operating continuously since Summer 2010. Muon radiographies of the Soufrière lava dome reveal its very heterogeneous density structure produced by an intense hydrothermal circulation of acid fluids which alters its mechanical integrity leading to a high risk level of destabilisation. Small-size features are visible on the images and provide precious informations on the structure of the upper hydrothermal systems. Joined interpretation with other geophysical data available on the Soufrière - seismic tomography, electrical resistivity tomography, gravity data - is presented and discussed. Density muon tomography of the internal structure of volcanoes like the Soufrière brings important informations for the hazard evaluation an is particularly

  1. PREFACE: International Conference on Advanced Structural and Functional Materials Design 2008

    Science.gov (United States)

    Kakeshita, Tomoyuki

    2009-07-01

    related research topics. The organizing committee gratefully thanks participants for presenting their recent results and for discussions with our COE members and international attendees. November 2008 Professor Tomoyuki Kakeshita Chairman of the Conference Vice Dean, Graduate School of Engineering, Osaka University, Division of Materials and Manufacturing Science, Graduate School of Engineering Leader of Global COE Program, Osaka University, ''Center of Excellence for Advanced Structural and Functional Materials Design'' Organization Chairman: T Kakeshita (Osaka University) Advisory Board:H Mehrer (University Münster, Germany), E K H Salje (University of Cambridge, United Kingdom), H-E Schaefer (University of Stuttgart, Germany), P Veyssiere (CNRS-ONERA, France) Organizing Committee: T Kakeshita, H Araki, H Fujii, S Fujimoto, Y Fujiwara, A Hirose, S Kirihara, M Mochizuki, H Mori, T Nagase, H Nakajima, T Nakano, R Nakatani, K Nogi, Y Setsuhara, Y Shiratsuchi, T Tanaka, T Terai, H Tsuchiya, N Tsuji, H Utsunomiya, H Yasuda, H Yasuda (Osaka University) Executive Committee: T Kakeshita, S Fujimoto, Y Fujiwara, A Hirose, T Tanaka, H Yasuda (Osaka University) Conference Secretariat: Y Fujiwara (Osaka University) Proceedings Editors: T Kakeshita and Y Fujiwara (Osaka University) Conference photograph

  2. The quest for high-gradient superconducting cavities

    International Nuclear Information System (INIS)

    Padamsee, H.

    1999-01-01

    . (Y. Tanaka)

  3. Clinical distinction between nasal optic disc hypoplasia (NOH and glaucoma with NOH-like temporal visual field defects

    Directory of Open Access Journals (Sweden)

    Hiroshi Ohguro

    2010-06-01

    Full Text Available Hiroshi Ohguro, Ikuyo Ohguro, Midori Tsuruta, Maki Katai, Sachie TanakaDepartment of Ophthalmology, Sapporo Medical University School of Medicine, JapanPurpose: To report on the clinically important differences between nasal optic hypoplasia (NOH and glaucoma with NOH-like temporal visual field defect (VFD.Method: Five NOH (four bilateral and one unilateral patients, three unilateral NOH patients with glaucoma, and two glaucoma patients with NOH-like temporal VFD were clinically characterized. Superior segmental optic nerve hypoplasia was also associated with glaucoma in one eye of a bilateral NOH case and the NOH eye of a unilateral NOH patient. Ocular manifestations including refractive errors, size, and appearances of the optic discs, retinal nerve fiber thickness (NFLT ascertained by optical coherence tomography (OCT, and VFD were examined.Results: Ophthalmic examinations revealing NOH showed high myopia at more than -5.0D, a small disc with nasal double-ring appearance, significantly decreased NFLT by OCT, and retinal nerve fiber layer defect in the corresponding nasal sector. Stationary temporal VFD varied from a slight depression of the peripheral isopters to wide sector defects. In contrast, two glaucoma patients with NOH-like temporal VFD showed several different clinical features, including mild myopia less than -5D, a normal size with glaucomatous disc cupping; a slight decrease in nasal NFLT and progression of temporal and other glaucomatous VFD.Conclusion: Careful evaluation of optic disc appearance and measurement of NFLT using OCT may help to distinguish between NOH and glaucoma with NOH-like temporal VFD.Keywords: nasal optic disc hypoplasia, glaucoma, temporal visual field defects, optical coherence tomography, superior segmental optic nerve hypoplasia

  4. Seismic measures and defence in depth of nuclear power plant. Lessons learned from the great east Japan earthquake

    International Nuclear Information System (INIS)

    Ochiai, Kanehiro

    2011-01-01

    The Great East Japan Earthquake occurred in March 11, 2011 brought about severe accident at nuclear power plant, which gave significant lessons to nuclear experts concerned with safety measures. Concepts of defence in depth was basic philosophy to assure safety of nuclear power plant even against uncertainties exceeding design basis. This concept consisted of prevention, monitoring, and action to mitigate consequences of failures such as a series of physical barriers between the reactor core and the environment, which were called multiple safety systems, each with backup and designed to accommodate human error. As for natural disaster, depth of recognition of characteristic of natural phenomena and its effect and engineering judgment was of prime importance. Different waveforms of ground motion at Fukushima and Onagawa at the Great East Japan Earthquake showed that design ground motion should have large uncertainties. To cope with uncertainties of ground motion, robust seismic measures based on experience were such as design of static seismic intensity and rigid structure of natural period less than 0.1 sec. As for tsunami, defence in depth measures were prepared for the cooling of reactor core, spent fuel and related electric generation equipment with taking into account 1) time lag between tsunami generation and arrival, 2) tsunami affected area could be limited by coastal levee or anti-inundation measure, 3) system redundancy could be assured by different locations of equipments and 4) repair works could be done by shipment of replacement equipment from outside due to limitation of affected regional area. Success examples of Onagawa, Tokai unit 2, Fukushima Daiichi unit 6 and Fukushima Daini Nuclear Power Plants could suggest definite tsunami defence in depth measures. Containment vent system as final heat sink and emergency condenser as reactor core cooling at outage should be properly utilized for Fukushima Daiichi unit 1 Nuclear Power Plant. (T. Tanaka)

  5. Country report on human resource development in nuclear field

    International Nuclear Information System (INIS)

    Wanitsuksombut, Warapon; Noochpramool, Kovit

    2000-01-01

    The short-term plan is to promote utilization of the new research reactor in Thailand. The long-term plan is to gain public understanding and acceptance of nuclear technology. Since 1991, the office has conducted training and seminars in nuclear related field. The major training is in radiation protection, and training in nuclear reactor was at noticeably smaller portion. For ten years of training, 3,649 persons passed different radiation protection courses. Education programs in universities are outlined with the curriculums in the paper. It is clear that the manpower produced in nuclear field in Thailand is inadequate. Further more, most of them are working in limited areas in specific institutes, research laboratories, modern hospitals, and academic teaching. They seldom contact with the public. Hence communication to the public is lacking. After the training course for schoolteachers in our research reactor site, many of them appreciate new knowledge of nuclear technology. They became to realize that they had been involved with the nuclear technology before in their everyday well being. The urgent need is to arrange various suitable courses on research reactor utilization. In this effort, the exchange of information, equipment as well as teaching materials form developed institutes are necessary. The urgent need is a system of qualification for Radiation Protection Officer. By exchange of information and seminars, it may help the country to decide whether the harmonization and accreditation of training courses or the accredited examination is adopted. For long-term achievement, a regular seminar for schoolteacher should be formulated, and a program for social and economics curriculum in nuclear field should be initiated. (Tanaka, Y.)

  6. Transcriptome Profiling to Understand the Effect of Citrus Rootstocks on the Growth of 'Shatangju' Mandarin.

    Science.gov (United States)

    Liu, Xiang-Yu; Li, Juan; Liu, Meng-Meng; Yao, Qing; Chen, Jie-Zhong

    2017-01-01

    To obtain insight into potential mechanisms underlying the influence of rootstock on scion growth, we performed a comparative analysis of 'Shatangju' mandarin grafted onto 5 rootstocks: Fragrant orange (Citrus junons Sieb. ex. Tanaka), Red tangerine (Citrus reticulata Blanco), 'Shatangju' mandarin (Citrus reticulata Blanco), Rough lemon (Citrus jambhiri Lush) and Canton lemon (Citrus limonia Osbeck). The tree size of 'Shatangju' mandarin grafted onto Canton lemon and Rough lemon were the largest, followed by self-rooted rootstock trees, and the lowest tree sizes correspond to ones grafted on Red tangerine and Fragrant orange rootstocks. The levels of indoleacetic acid (IAA) and gibberellin (GA) were significantly and positively related to growth vigor. The differences of gene expression in leaves of trees grafted onto Red tangerine, Canton lemon and 'Shatangju' mandarin were analyzed by RNA-Seq. Results showed that more differentially expressed genes involved in oxidoreductase function, hormonal signal transduction and the glycolytic pathway were enriched in 'Red tangerine vs Canton lemon'. qRT-PCR analysis showed that expression levels of ARF1, ARF8, GH3 and IAA4 were negatively correlated with the growth vigor and IAA content. The metabolism of GA was influenced by the differential expression of KO1 and GA2OX1 in grafted trees. In addition, most of antioxidant enzyme genes were up-regulated in leaves of trees grafted onto Red tangerine, resulting in a higher peroxidase activity. We concluded that different rootstocks significantly affected the expression of genes involved in auxin signal transduction pathway and GA biosynthesis pathway in the grafted plants, and then regulated the hormone levels and their signal pathways.

  7. Transcriptome Profiling to Understand the Effect of Citrus Rootstocks on the Growth of ‘Shatangju’ Mandarin

    Science.gov (United States)

    Liu, Meng-Meng; Yao, Qing; Chen, Jie-Zhong

    2017-01-01

    To obtain insight into potential mechanisms underlying the influence of rootstock on scion growth, we performed a comparative analysis of ‘Shatangju’ mandarin grafted onto 5 rootstocks: Fragrant orange (Citrus junons Sieb. ex. Tanaka), Red tangerine (Citrus reticulata Blanco), ‘Shatangju’ mandarin (Citrus reticulata Blanco), Rough lemon (Citrus jambhiri Lush) and Canton lemon (Citrus limonia Osbeck). The tree size of ‘Shatangju’ mandarin grafted onto Canton lemon and Rough lemon were the largest, followed by self-rooted rootstock trees, and the lowest tree sizes correspond to ones grafted on Red tangerine and Fragrant orange rootstocks. The levels of indoleacetic acid (IAA) and gibberellin (GA) were significantly and positively related to growth vigor. The differences of gene expression in leaves of trees grafted onto Red tangerine, Canton lemon and ‘Shatangju’ mandarin were analyzed by RNA-Seq. Results showed that more differentially expressed genes involved in oxidoreductase function, hormonal signal transduction and the glycolytic pathway were enriched in ‘Red tangerine vs Canton lemon’. qRT-PCR analysis showed that expression levels of ARF1, ARF8, GH3 and IAA4 were negatively correlated with the growth vigor and IAA content. The metabolism of GA was influenced by the differential expression of KO1 and GA2OX1 in grafted trees. In addition, most of antioxidant enzyme genes were up-regulated in leaves of trees grafted onto Red tangerine, resulting in a higher peroxidase activity. We concluded that different rootstocks significantly affected the expression of genes involved in auxin signal transduction pathway and GA biosynthesis pathway in the grafted plants, and then regulated the hormone levels and their signal pathways. PMID:28081213

  8. Incidence of 'Candidatus Liberibacter asiaticus'-Infected Plants Among Citrandarins as Rootstock and Scion Under Field Conditions.

    Science.gov (United States)

    Boava, Leonardo Pires; Sagawa, Cíntia Helena Duarte; Cristofani-Yaly, Mariângela; Machado, Marcos Antonio

    2015-04-01

    Huanglongbing (HLB), caused by the bacterium 'Candidatus Liberibacter' spp., is currently one of the most serious diseases of citrus plants and has caused substantial economic losses. Thus far, there is no source of genetic resistance to HLB in the genus Citrus or its relatives. However, several studies have reported Poncirus trifoliata and some of its hybrids to be more tolerant to the disease. The main objective of this study was to report differences in the incidence of 'Ca. L. asiaticus' infection in citrandarin plants, hybrids from Sunki mandarin (Citrus sunki (Hayata) hort. ex Tanaka), and trifoliate orange Rubidoux (P. trifoliata (L.) Raf.)), after conducting an extensive survey under field conditions. These hybrid plants were established for approximately 7 years in an area with a high incidence of 'Ca. L. asiaticus'-infected plants. We selected two experimental areas (area A and area B), located approximately 10 m apart. Area A consists of Pera sweet orange (C. sinensis (L.) Osb.) grafted onto 56 different citrandarin rootstocks. Area B consists of citrandarin scions grafted onto Rangpur lime (C. limonia Osb.) rootstock. Bacteria in the leaves and roots were detected using real-time quantitative polymerase chain reaction. The incidence of 'Ca. L. asiaticus'-infected plants was 92% in area A and 14% in area B. Because infected plants occurred in both areas, we examined whether the P. trifoliata hybrid rootstock influenced HLB development and also determined the distribution of 'Ca. L. asiaticus' in Citrus tree tissues. Although this survey does not present evidence regarding the resistance of P. trifoliata and its hybrids in relation to bacteria or psyllids, future investigation, mainly using the most promising hybrids for response to 'Ca. L. asiaticus', will help us to understand the probable mechanism of defense or identifying compounds in P. trifoliata and its hybrids that are very important as strategy to combat HLB. Details of these results are

  9. Purification of human albumin by the combination of the method of Cohn with liquid chromatography

    Directory of Open Access Journals (Sweden)

    Tanaka K.

    1998-01-01

    Full Text Available Large volumes of plasma can be fractionated by the method of Cohn at low cost. However, liquid chromatography is superior in terms of the quality of the product obtained. In order to combine the advantages of each method, we developed an integrated method for the production of human albumin and immunoglobulin G (IgG. The cryoprecipitate was first removed from plasma for the production of factor VIII and the supernatant of the cryoprecipitate was fractionated by the method of Cohn. The first precipitate, containing fractions (F-I + II + III, was used for the production of IgG by the chromatographic method (see Tanaka K et al. (1998 Brazilian Journal of Medical and Biological Research, 31: 1375-1381. The supernatant of F-I + II + III was submitted to a second precipitation and F-IV was obtained and discarded. Albumin was obtained from the supernatant of the precipitate F-IV by liquid chromatography, ion-exchange on DEAE-Sepharose FF, filtration through Sephacryl S-200 HR and introduction of heat treatment for fatty acid precipitation. Viral inactivation was performed by pasteurization at 60ºC for 10 h. The albumin product obtained by the proposed procedure was more than 99% pure for the 15 lots of albumin produced, with a mean yield of 25.0 ± 0.5 g/l plasma, containing 99.0 to 99.3% monomer, 0.7 to 1.0% dimers, and no polymers. Prekallikrein activator levels were <=5 IU/ml. This product satisfies the requirements of the 1997 Pharmacopée Européenne.

  10. A case study and current status of the radiation education in the senior high school field

    Energy Technology Data Exchange (ETDEWEB)

    Miyazawa, Kouji [Tokyo Kasei Univ. Fuzoku Girls' High School, Tokyo (Japan)

    1999-09-01

    There is almost no opportunity to have practices on the (ionizing) radiation in the present-day science curriculum in high school courses. The students who complete the science course are less than 20 % of the total. The students are leaving physics and/or science. We had created a lecture so called experimental natural science as an option for literature course students in 1996. The lecture included chemistry, biology and geology, comprehensively, and it provided easy understanding to demonstrate the phenomena by analogy experiments. Two courses of this type lecture were created for the second and third year classes in 1998. This paper introduces the content, which has relevant to the radiation among this curriculum. We can use very small radiation sources of polonium, strontium, and cobalt without licenses. The students measure the natural radiations of concrete buildings and lakes and so on, using simple radiation detectors. The simple cloud chamber shows the difference of locus in {alpha}, {beta}, {gamma}-rays, respectively. An analogy of the light source is effective to explain the significance of ionizing radiation, radioactivity and also units related to the radiation such as Bq, Gy and Sv. A half-life time of the radioactivity is explained by using the experiment on capacitor discharges through resistances. The X-ray film for dentists and simple soft x-ray sources are used for taking pictures of their personal goods. The total lesson time is 6 to 8 hours for radiation. Consequently they learn the knowledge on safety and sweep their mind of a dread for radiation out. (Y. Tanaka)

  11. Age-dependent dose coefficients for tritium in Asian populations

    International Nuclear Information System (INIS)

    Trivedi, A.

    1999-10-01

    The International Commission on Radiological Protection (ICRP) Publications 56 (1989) and 67 (1993) have prescribed the biokinetic models and age-dependent dose coefficients for tritiated water and organically bound tritium. The dose coefficients are computed from values selected to specify the anatomical, morphological and physiological characteristics of a three-month-old, one-year-old, five-year-old, 10-year-old, 15-year-old and adult (Reference Man) Caucasian living in North America and Western Europe. However, values for Reference Man and other age groups are not directly applicable to Asians, because of differences in race, custom, dietary habits and climatic conditions. An Asian Man model, including five age groups, has been proposed by Tanaka and Kawamura (1996, 1998) for use in internal dosimetry. The basic concept of the ICRP Reference Man and the system describing body composition in ICRP Publication 23 (1975) were used. Reference values for Asians were given for the body weight and height, the mass of soft tissue, the mass of body water and the daily fluid balance, and are used to compute the dose coefficients for tritium. The age-dependent dose coefficients for Asians for tritiated water intakes are smaller by 20 to 30% of the currently prescribed values (Trivedi, 1998). The reduction in the dose coefficient values is caused by the increased daily fluid balance among Asians. The dose coefficient for tritiated water is 1.4 x 10 -11 Sv Bq -1 for Asian Man compared to 2.0 x 10 -11 Sv Bq -1 for Reference Man. The dose coefficients for organically bound tritium are only marginally different from those of the ICRP values. The dose coefficient for organically bound tritium for Asian Man is 4.0 x 10 -11 Sv Bq -11 compared to 4.6 x 10 -11 Sv Bq -1 for Reference Man. (author)

  12. The effects of kinematically aligned total knee arthroplasty on stress at the medial tibia: A case study for varus knee.

    Science.gov (United States)

    Nakamura, S; Tian, Y; Tanaka, Y; Kuriyama, S; Ito, H; Furu, M; Matsuda, S

    2017-01-01

    Little biomechanical information is available about kinematically aligned (KA) total knee arthroplasty (TKA). The purpose of this study was to simulate the kinematics and kinetics after KA TKA and mechanically aligned (MA) TKA with four different limb alignments. Bone models were constructed from one volunteer (normal) and three patients with three different knee deformities (slight, moderate and severe varus). A dynamic musculoskeletal modelling system was used to analyse the kinematics and the tibiofemoral contact force. The contact stress on the tibial insert, and the stress to the resection surface and medial tibial cortex were examined by using finite element analysis. In all bone models, posterior translation on the lateral side and external rotation in the KA TKA models were greater than in the MA TKA models. The tibiofemoral force at the medial side was increased in the moderate and severe varus models with KA TKA. In the severe varus model with KA TKA, the contact stress on the tibial insert and the stress to the resection surface and to the medial tibial cortex were increased by 41.5%, 32.2% and 53.7%, respectively, compared with MA TKA, and the bone strain at the medial side was highest among all models. Near normal kinematics was observed in KA TKA. However, KA TKA increased the contact force, stress and bone strain at the medial side for moderate and severe varus knee models. The application of KA TKA for severe varus knees may be inadequate.Cite this article: S. Nakamura, Y. Tian, Y. Tanaka, S. Kuriyama, H. Ito, M. Furu, S. Matsuda. The effects of kinematically aligned total knee arthroplasty on stress at the medial tibia: A case study for varus knee. Bone Joint Res 2017;6:43-51. DOI: 10.1302/2046-3758.61.BJR-2016-0090.R1. © 2017 Nakamura et al.

  13. Education on radiation risk in primary and middle schools in Japan

    International Nuclear Information System (INIS)

    Tada, Junichiro

    1999-01-01

    The (ionizing) radiation appears in the text of social studies in primary and middle school curriculums. The radiation is almost not involved in the text of science. Consequently, pupils know only the examples of disasters caused by the excessive radiation and have no chance to learn real natures and characters of the radiation after the compulsory education course. This situation means difficulties to give a lesson on the radiation risk. Erupting volcanoes, earthquakes and lightning are similar in danger of the excessive radiations. However, few pupils have a supernatural threat for these phenomena that ancient people do, because they have the adequate knowledge for theses after primary and middle school curriculums. This situation is a full of contrast to the case of the radiation on the major sensitivity that they have. The point is to let pupils learn that the radiation is one of the natural phenomena like heat and electricity, those exist before a birth of human being. Natural ionizing radiation sources are recommended for the first teaching material. Pupils know that the radiation is one of commonplace events, then. Radiation is one of the universe elements. Consequently, they will know that human being is evolving with the radiation exposures. The general perception on safety and danger is a kind of antinomy in Japan. A person who is following antinomy accepts only zero risk. Preschool educations will be needed to grow out of an antinomy concept on safety and danger, and to recognize the reality. A comprehensive knowledge should be provided with a full balance for the perception of risk. For an example, prejudices against HIV patients still remain in Japan, due to many belated campaigns on weak infection. People remember danger, and they do not remember the fact that is not dangerous. (Y. Tanaka)

  14. The sensitivity to replacement and displacement of the eyes region in early adolescence, young and later adulthood

    Directory of Open Access Journals (Sweden)

    Bozana eMeinhardt-Injac

    2015-08-01

    Full Text Available Recent evidence suggests a rather gradual developmental trajectory for processing vertical relational face information, lasting well into late adolescence (de Heering and Schlitz, 2012. Results from another recent study (Tanaka et al., 2014 indicate that children and young adolescents use a smaller spatial integration field for faces than do adults, which particularly affects assessment of long-range vertical relations. Here we studied sensitivity to replacement of eyes and eyebrows (F, variation of inter-eye distance (H and eye height (V in young adolescents (11-12 years, young (21-25 years and middle-age adults (51-62 years. In order to provide a baseline for potential age effects the sensitivity to all three types of face manipulations was calibrated to equal levels for the young adults group. Both the young adolescents and the middle age adults showed substantially lower sensitivity compared to young adults, but only the young adolescents had selective impairment for V relational changes. Their inversion effects were at similar levels for all types of face manipulations, while in both adult groups the inversion effects for V were considerably stronger than for H or F changes. These results suggest that young adolescents use a limited spatial integration field for faces, and have not reached a mature state in processing vertical configural cues. The H-V asymmetry of inversion effects found for both adult groups indicates that adults integrate across the whole face when they view upright stimuli. However, the notably lower sensitivity of middle-age adults for all types of face manipulations, which was accompanied by a strong general same bias, suggests early age-related decline in attending cues for facial difference.

  15. Interim report on assessment of cable aging for nuclear power plants

    International Nuclear Information System (INIS)

    2006-12-01

    accelerated aging conditions. Cable aging test would continue by March 2009. (T. Tanaka)

  16. High Dietary Sodium Intake Assessed by Estimated 24-h Urinary Sodium Excretion Is Associated with NAFLD and Hepatic Fibrosis.

    Directory of Open Access Journals (Sweden)

    Ji Hye Huh

    Full Text Available Although high sodium intake is associated with obesity and hypertension, few studies have investigated the relationship between sodium intake and non-alcoholic fatty liver disease (NAFLD. We evaluated the association between sodium intake assessed by estimated 24-h urinary sodium excretion and NAFLD in healthy Koreans.We analyzed data from 27,433 participants in the Korea National Health and Nutrition Examination Surveys (2008-2010. The total amount of sodium excretion in 24-h urine was estimated using Tanaka's equations from spot urine specimens. Subjects were defined as having NAFLD when they had high scores in previously validated NAFLD prediction models such as the hepatic steatosis index (HSI and fatty liver index (FLI. BARD scores and FIB-4 were used to define advanced fibrosis in subjects with NAFLD.The participants were classified into three groups according to estimated 24-h urinary excretion tertiles. The prevalence of NAFLD as assessed by both FLI and HSI was significantly higher in the highest estimated 24-h urinary sodium excretion tertile group. Even after adjustment for confounding factors including body fat and hypertension, the association between higher estimated 24-h urinary sodium excretion and NAFLD remained significant (Odds ratios (OR 1.39, 95% confidence interval (CI 1.26-1.55, in HSI; OR 1.75, CI 1.39-2.20, in FLI, both P < 0.001. Further, subjects with hepatic fibrosis as assessed by BARD score and FIB-4 in NAFLD patients had higher estimated 24-h urinary sodium values.High sodium intake was independently associated with an increased risk of NAFLD and advanced liver fibrosis.

  17. Monoclonal antibodies in rheumatoid arthritis: comparative effectiveness of tocilizumab with tumor necrosis factor inhibitors

    Directory of Open Access Journals (Sweden)

    Tanaka T

    2014-04-01

    Full Text Available Toshio Tanaka,1,2 Yoshihiro Hishitani,3 Atsushi Ogata2,3 1Department of Clinical Application of Biologics, Osaka University Graduate School of Medicine, Osaka University, Osaka, Japan; 2Department of Immunopathology, WPI Immunology Frontier Research Center, Osaka University, Osaka, Japan; 3Department of Respiratory Medicine, Allergy and Rheumatic Diseases, Osaka University Graduate School of Medicine, Osaka University, Osaka, Japan Abstract: Rheumatoid arthritis (RA is a chronic inflammatory disease characterized by persistent joint inflammation, systemic inflammation, and immunological abnormalities. Because cytokines such as tumor necrosis factor (TNF-α and interleukin (IL-6 play a major role in the development of RA, their targeting could constitute a reasonable novel therapeutic strategy for treating RA. Indeed, worldwide clinical trials of TNF inhibiting biologic disease modifying antirheumatic drugs (bDMARDs including infliximab, adalimumab, golimumab, certolizumab pegol, and etanercept as well as the humanized anti-human IL-6 receptor antibody, tocilizumab, have demonstrated outstanding clinical efficacy and tolerable safety profiles, resulting in worldwide approval for using these bDMARDs to treat moderate to severe active RA in patients with an inadequate response to synthetic disease modifying antirheumatic drugs (sDMARDs. Although bDMARDs have elicited to a paradigm shift in the treatment of RA due to the prominent efficacy that had not been previously achieved by sDMARDs, a substantial percentage of patients failed primary or secondary responses to bDMARD therapy. Because RA is a heterogeneous disease in which TNF-α and IL-6 play overlapping but distinct pathological roles, further studies are required to determine the best use of TNF inhibitors and tocilizumab in individual RA patients. Keywords: interleukin-6, rheumatoid arthritis, adalimumab, biologic

  18. KURRI progress report 1998. April 1998 - March 1999

    International Nuclear Information System (INIS)

    1999-09-01

    Monitoring, Publications (April 1998-March 1999), Meeting, Seminar and Visiting Scientist and Committee Members. (Y. Tanaka)

  19. Mental and growth retardation after medulloblastoma radiation therapy. MRI assessment of radiation injuries

    International Nuclear Information System (INIS)

    Miyagi, Koichi; Mukawa, Jiro; Mekaru, Susumu; Harakuni, Tsuyoshi; Yamaguchi, Keiichiro; Tominaga, Daisuke; Nakasone, Susumu.

    1996-01-01

    We report on 3 cases of a medulloblastoma and discuss the usefulness of calculating the T2 value from long-term follow-up MRIs of 1.5 T in order to analyze the cause of mental retardation. Of 13 medulloblastoma patients who were treated at our hospital from 1970 through 1984, 4 patients survived. Excluding 1 of these patients, a 2-year-old child, the remaining 3 cases are discussed. The 3 patients underwent surgery and received postoperative craniospinal irradiation and chemotherapy. The radiation dose (tumoral dose) was 40 to 85 Gy to the posterior fossa, 0 to 30.4 Gy to the spinal cord, and 25.6 to 35.2 Gy to the whole brain. The long-term effects were evaluated by calculating the T2 value and conducting a psychometric analysis from 2 to 11 years after radiation therapy. Their respective Tanaka-Vineland IQ test results were 32, 46, and 102 and their respective growth heights were -3.6 SD, -6.4 SD, and +0.18 SD. Growth hormone deficiencies were identified in all 3 patients. The decline in ability and failure to grow became more pronounced with time. The calculated T2 values showed alterations in the hippocampus, the occipital white matter, and the hypothalamus of all 3 patients. The hippocampal alteration contributed to a decline in intellectual ability and resulted in learning difficulties at school. It should be noted that in addition to whole-brain radiation that was pursued, the focal radiation provided delivers the same radiation dose to the hippocampus as to the tumor. Such a high radiation dose thus might be responsible for the decline in intellectual ability. Therefore, to avoid radiation injury to these areas, stereotactic radiosurgery must be planned for focal radiation therapy. (K.H.)

  20. The investigation on the mass media reports on the JCO accident in the major atomic energy countries and Asian countries

    International Nuclear Information System (INIS)

    1999-12-01

    The JCO (Japan Conversion Organization) accident is the worst one in the history of the atomic energy developments in Japan. The many reports about the accident appeared in the 44 mass media in the world from Sep. 30 to Oct. 14, 1999. Chronological statistics of issued 522 articles are listed under particular criteria. Some of them were based on wrong knowledge and/or overestimations about the accident based on delivered articles by the news agency. Some of others gave critics over the total atomic energy industries of Japan, especially on safety managements and so-called similar Japan syndromes. This investigation gives emphasis on the articles based on wrong knowledge. We identified the countries and the newspaper publishers and the news agencies those gave wrong descriptions. Total 25 articles used the words [explosion] and [fire], which were delivered from the Kyodo News Service. Some of the Asian newspaper wrote that a large quantity of radioactivity, radioactive material and/or nuclear fuels was released. Some other news publishers said the accident was happened at fuel reprocessing facilities, when the waste fuel rods were under cutting. Critics delivered in the individual countries were summarized, i.e. USA, Canada, France, UK, German, Russia, Australia, China, Korea, Thailand, Vietnam, Indonesia, Taiwan and the news agencies. One of the key issues is the exact information release for the press corps on the early stage of the accidents. The second point is to recognize the different status on atomic energy in the individual countries, when Japan want to explain their domestic situations. Accidents of atomic energy gave many impacts on various aspects to other countries. Japan should understand the neighborhood by collecting world information on atomic energy and analyzing them. Summaries of 522 articles appeared in the mass media were attached in this investigation among the report of 180 pages. (Tanaka, Y.)