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Sample records for employing uni bi

  1. Comparative Study on Uni- and Bi-Directional Fluid Structure Coupling of Wind Turbine Blades

    Directory of Open Access Journals (Sweden)

    Mesfin Belayneh Ageze

    2017-09-01

    Full Text Available The current trends of wind turbine blade designs are geared towards a longer and slender blade with high flexibility, exhibiting complex aeroelastic loadings and instability issues, including flutter; in this regard, fluid-structure interaction (FSI plays a significant role. The present article will conduct a comparative study between uni-directional and bi-directional fluid-structural coupling models for a horizontal axis wind turbine. A full-scale, geometric copy of the NREL 5MW blade with simplified material distribution is considered for simulation. Analytical formulations of the governing relations with appropriate approximation are highlighted, including turbulence model, i.e., Shear Stress Transport (SST k-ω. These analytical relations are implemented using Multiphysics package ANSYS employing Fluent module (Computational Fluid Dynamics (CFD-based solver for the fluid domain and Transient Structural module (Finite Element Analysis-based solver for the structural domain. ANSYS system coupling module also is configured to model the two fluid-structure coupling methods. The rated operational condition of the blade for a full cycle rotation is considered as a comparison domain. In the bi-directional coupling model, the structural deformation alters the angle of attack from the designed values, and by extension the flow pattern along the blade span; furthermore, the tip deflection keeps fluctuating whilst it tends to stabilize in the uni-directional coupling model.

  2. Uni-, bi- and tri-modal warning signals: effects of temporal parameters and sensory modality on perceived urgency

    NARCIS (Netherlands)

    van Erp, Johannes Bernardus Fransiscus; Toet, Alexander; Janssen, Joris B.

    Multi-sensory warnings can potentially enhance risk communication. Hereto we investigated how temporal signal parameters affect perceived urgency within and across modalities. In an experiment, 78 observers rated the perceived urgency of uni-, bi-, and/or tri-modal stimuli as function of 25

  3. Uni-, bi- and tri-modal warning signals : Effects of temporal parameters and sensory modality on perceived urgency

    NARCIS (Netherlands)

    Erp, J.B.F. van; Toet, A.; Janssen, J.B.

    2015-01-01

    Multi-sensory warnings can potentially enhance risk communication. Hereto we investigated how temporal signal parameters affect perceived urgency within and across modalities. In an experiment, 78 observers rated the perceived urgency of uni-, bi-, and/or tri-modal stimuli as function of 25

  4. The use of the bi-factor model to test the uni-dimensionality of a battery of reasoning tests.

    Science.gov (United States)

    Primi, Ricardo; Rocha da Silva, Marjorie Cristina; Rodrigues, Priscila; Muniz, Monalisa; Almeida, Leandro S

    2013-02-01

    The Battery of Reasoning Tests 5 (BPR-5) aims to assess the reasoning ability of individuals, using sub-tests with different formats and contents that require basic processes of inductive and deductive reasoning for their resolution. The BPR has three sequential forms: BPR-5i (for children from first to fifth grade), BPR-5 - Form A (for children from sixth to eighth grade) and BPR-5 - form B (for high school and undergraduate students). The present study analysed 412 questionnaires concerning BPR-5i, 603 questionnaires concerning BPR-5 - Form A and 1748 questionnaires concerning BPR-5 - Form B. The main goal was to test the uni-dimensionality of the battery and its tests in relation to items using the bi-factor model. Results suggest that the g factor loadings (extracted by the uni-dimensional model) do not change when the data is adjusted for a more flexible multi-factor model (bi-factor model). A general reasoning factor underlying different contents items is supported.

  5. Experimental Studies on Strength Behaviour of Notched Glass/Epoxy Laminated Composites under Uni-axial and Bi-axial Loading

    Science.gov (United States)

    Guptha, V. L. Jagannatha; Sharma, Ramesh S.

    2017-11-01

    The use of FRP composite materials in aerospace, aviation, marine, automotive and civil engineering industry has increased rapidly in recent years due to their high specific strength and stiffness properties. The structural members contrived from such composite materials are generally subjected to complex loading conditions and leads to multi-axial stress conditions at critical surface localities. Presence of notches, much required for joining process of composites, makes it further significant. The current practice of using uni-axial test data alone to validate proposed material models is inadequate leading to evaluation and consideration of bi-axial test data. In order to correlate the bi-axial strengths with the uni-axial strengths of GFRP composite laminates in the presence of a circular notch, bi-axial tests using four servo-hydraulic actuators with four load cells were carried out. To determine the in-plane strength parameters, bi-axial cruciform test specimen model was considered. Three different fibre orientations, namely, 0°, 45°, and 90° are considered with a central circular notch of 10 mm diameter in the present investigation. From the results obtained, it is observed that there is a reduction in strength of 5.36, 2.41 and 13.92% in 0°, 45°, and 90° fibre orientation, respectively, under bi-axial loading condition as compared to that of uni-axial loading in laminated composite.

  6. Ultrahigh-sensitive detection of molecules produced in catalytic reactions by uni-atomic-composition bi-element clusters supported on solid substrate

    International Nuclear Information System (INIS)

    Yasumatsu, H; Fukui, N

    2013-01-01

    An apparatus has been developed for measuring catalytic activities of uni-atomic-composition bi-element clusters supported on a solid substrate. The cluster sample is prepared by irradiating a cluster-ion beam having the uni-atomic composition onto the substrate on a soft-landing condition in an ultra-high vacuum. The catalytic activity is measured by temperature-programmed desorption (TPD) mass analysis. Molecules at a density as low as 3 cm −3 have been detected with an ultrahigh-sensitive TPD mass spectrometer consisting of a cylindrical electron gun, a quadrupole mass filter and a micro-channel-plate ion-detector. The high reproducibility has been achieved by careful calibration of the TPD mass spectrometer. As a benchmark example, thermal oxidation of CO catalysed on Pt 30 disks supported on a silicon surface was studied. The CO 2 products have been successfully observed at the Pt 30 density as low as 3 × 10 12 clusters in a circular area of 8 mm in diameter at the ramping rate of the sample temperature as low as 0.3 K s −1 .

  7. Exploring intra- and inter-reader variability in uni-dimensional, bi-dimensional, and volumetric measurements of solid tumors on CT scans reconstructed at different slice intervals

    International Nuclear Information System (INIS)

    Zhao, Binsheng; Tan, Yongqiang; Bell, Daniel J.; Marley, Sarah E.; Guo, Pingzhen; Mann, Helen; Scott, Marietta L.J.; Schwartz, Lawrence H.; Ghiorghiu, Dana C.

    2013-01-01

    Objective: Understanding magnitudes of variability when measuring tumor size may be valuable in improving detection of tumor change and thus evaluating tumor response to therapy in clinical trials and care. Our study explored intra- and inter-reader variability of tumor uni-dimensional (1D), bi-dimensional (2D), and volumetric (VOL) measurements using manual and computer-aided methods (CAM) on CT scans reconstructed at different slice intervals. Materials and methods: Raw CT data from 30 patients enrolled in oncology clinical trials was reconstructed at 5, 2.5, and 1.25 mm slice intervals. 118 lesions in the lungs, liver, and lymph nodes were analyzed. For each lesion, two independent radiologists manually and, separately, using computer software, measured the maximum diameter (1D), maximum perpendicular diameter, and volume (CAM only). One of them blindly repeated the measurements. Intra- and inter-reader variability for the manual method and CAM were analyzed using linear mixed-effects models and Bland–Altman method. Results: For the three slice intervals, the maximum coefficients of variation for manual intra-/inter-reader variability were 6.9%/9.0% (1D) and 12.3%/18.0% (2D), and for CAM were 5.4%/9.3% (1D), 11.3%/18.8% (2D) and 9.3%/18.0% (VOL). Maximal 95% reference ranges for the percentage difference in intra-reader measurements for manual 1D and 2D, and CAM VOL were (−15.5%, 25.8%), (−27.1%, 51.6%), and (−22.3%, 33.6%), respectively. Conclusions: Variability in measuring the diameter and volume of solid tumors, manually and by CAM, is affected by CT slice interval. The 2.5 mm slice interval provides the least measurement variability. Among the three techniques, 2D has the greatest measurement variability compared to 1D and 3D

  8. Measurement of amino terminal propeptide of type III procollagen (PIIINP) employing the ADVIA Centaur platform. Validation, reference interval and comparison to UniQ RIA

    DEFF Research Database (Denmark)

    Knudsen, Cindy Soendersoe; Heickendorff, Lene; Nexo, Ebba

    2014-01-01

    Background: Recently, measurement of amino terminal propeptide of type III procollagen (PIIINP) was introduced as a part of the hepatic cirrhotic marker enhanced liver fibrosis™ test on the automated ADVIA Centaur® immunoassay platform (Siemens Healthcare Diagnostics Inc., Tarrytown, NY, USA...... UniQ PIIINP RIA assay (Orion Diagnostica, Espoo, Finland) using 55 patient samples (range=3.7-43.3 µg/L). Furthermore, we established a reference interval based on samples from 287 blood donors. Results: In the concentration range 2.5-11.9 µg/L, the total imprecision was below 8%. Comparison...... PIIINP assay is suitable for routine use with our newly defined reference interval. The results obtained by Centaur correlates well with those obtained by the previously employed RIA, though the absolute values are higher....

  9. UniFlex

    DEFF Research Database (Denmark)

    Borch, Ole; Helbo, Jan; Knudsen, Morten

    2003-01-01

    technical maintenance. Web interfaces for all type of users are developed to ease information and document upload, user administration and more. The product is used at Aalborg University open distance education for "Master of Industrial Information technology" (MII) and "Master in Mobile Information......Increasing demands for remote on-line education are changing the way teaching and learning is performed. New behavior in using pedagogy and supporting technology is needed to drive the learning process. To facilitate the use of services for selected activities to participants in on-line education......, a web site named UniFlex (University Flexible learning) has been developed and brought into use. The site is a comprehensive set of bookmarks including course taking, upload/download, and - of special significance - collaborative on-line project work. UniFlex has been developed to meet the requirement...

  10. UniFlex

    DEFF Research Database (Denmark)

    Borch, Ole; Helbo, Jan; Knudsen, Morten

    2004-01-01

    technical maintenance. Web interfaces for all type of users are developed to ease information and document upload, user administration and more. The product is used at Aalborg University open distance education for "Master of Industrial Information technology" (MII) and "Master in Mobile Information......Increasing demands for remote on-line education are changing the way teaching and learning is performed. New behavior in using pedagogy and supporting technology is needed to drive the learning process. To facilitate the use of services for selected activities to participants in on-line education......, a web site named UniFlex (University Flexible learning) has been developed and brought into use. The site is a comprehensive set of bookmarks including course taking, upload/download, and - of special significance - collaborative on-line project work. UniFlex has been developed to meet the requirement...

  11. UniTed

    OpenAIRE

    Harma, Eero

    2010-01-01

    UniTed on Teddy boy- tyylistä inspiroitunut kevät/kesä mallisto naisille.Mallistossa yhdistyy perinteinen teddy boy- vaatetus ja klassinen feminiinisyys, sekä menneisyys ja nykyisyys. Suunnittelun lähtökohtia olivat naisellisuus, tyylikkyys ja pyrkimys luoda nykyaikaista suunnittelua menneisyydestä lainaillen. United is a teddy boy- style inspired spring/summer collection for women. The collection combines traditional Teddy boy style with classical feminity and past with the present. The b...

  12. Nuorten nukkuminen ja uni

    OpenAIRE

    Kinnunen, Elisa

    2015-01-01

    Tämän opinnäytetyön aiheena on nuorten nukkuminen ja uni. Opinnäytetyön tarkoituksena oli selvittää, mitä tietoa Reisjärven kristillisen opiston nuoret ovat saaneet nukkumiseen vaikuttavista tekijöistä ja mistä nukkumiseen liittyvistä tekijöistä he haluavat tietoa. Opinnäytetyön tavoitteena oli tuottaa tietoa nuorten nukkumistottumuksista ja siitä, mitkä tekijät vaikuttavat nuorten nukkumiseen heidän omien kokemustensa mukaan. Opinnäytetyön tavoitteena oli myös tuottaa tietoa, millaisia nukku...

  13. The Universal Protein Resource (UniProt)

    Data.gov (United States)

    U.S. Department of Health & Human Services — The Universal Protein Resource (UniProt) is a comprehensive resource for protein sequence and annotation data. The UniProt databases are the UniProt Knowledgebase...

  14. Time Dependent and Steady Uni-axial Elongational Viscosity

    DEFF Research Database (Denmark)

    Nielsen, Jens K.; Rasmussen, Henrik Koblitz; Hassager, Ole

    2005-01-01

    Here we present measurements of transient and steady uni-axial elongational viscosity, using the Filament Stretching Rheometer1 or FSR1 (see Fig. 1) of the following melts: Four narrow MMD polystyrene (PS) samples with weight-average molar mass Mw in the range of 50k to 390k. Three different bi......-disperse samples, mixed from the narrow MMD PS. Two low-density polyethylene (LDPE) melts (Lupolen 1840D and 3020D). A steady-state viscosity was kept for 1-2.5 Hencky strain units in all measurements....

  15. Expanding the UniFrac Toolbox.

    Directory of Open Access Journals (Sweden)

    Ruth G Wong

    Full Text Available The UniFrac distance metric is often used to separate groups in microbiome analysis, but requires a constant sequencing depth to work properly. Here we demonstrate that unweighted UniFrac is highly sensitive to rarefaction instance and to sequencing depth in uniform data sets with no clear structure or separation between groups. We show that this arises because of subcompositional effects. We introduce information UniFrac and ratio UniFrac, two new weightings that are not as sensitive to rarefaction and allow greater separation of outliers than classic unweighted and weighted UniFrac. With this expansion of the UniFrac toolbox, we hope to empower researchers to extract more varied information from their data.

  16. Unión Europea

    Directory of Open Access Journals (Sweden)

    Klaus Jörg Ruhl

    2007-01-01

    Full Text Available El impulso y la protección de los derechos humanos se ha convertido en un objetivo prominente en las políticas de la Unión Europea (ue. La integración de la Carta de Derechos Fundamentales en la Constitución Europea así como la creación de una gran cantidad de instituciones, oficinas y agencias son muestra de ello. Entre ellas destacan el Defensor del Pueblo Europeo, el Observatorio Europeo de los Fenómenos de Discriminación y Xenofobia y las divisiones o grupos de trabajo de la Comisión, el Parlamento y el Consejo Europeos. En la política exterior de la ue, la cooperación para el desarrollo cada vez está más ligada al respeto de los derechos humanos en terceros países. Además, la Unión Europea contribuye al financiamiento de una gran cantidad de proyectos que pretenden fortalecer el respeto a los derechos humanos, impulsar la democracia y el Estado de derecho en muchas y distintas regiones geográficas. Este artículo pretende ofrecer un panorama general de estas políticas y un breve análisis de su efectividad.

  17. Unconventional superconductivity of the heavy fermion compound UNi2Al3

    International Nuclear Information System (INIS)

    Zakharov, Andrey

    2008-01-01

    The heavy fermion compound UNi 2 Al 3 exhibits the coexistence of superconductivity and magnetic order at low temperatures, stimulating speculations about possible exotic Cooper-pairing interaction in this superconductor. However, the preparation of good quality bulk single crystals of UNi 2 Al 3 has proven to be a non-trivial task due to metallurgical problems, which result in the formation of an UAl 2 impurity phase and hence a strongly reduced sample purity. The present work concentrates on the preparation, characterization and electronic properties investigation of UNi 2 Al 3 single crystalline thin film samples. The preparation of thin films was accomplished in a molecular beam epitaxy (MBE) system. (100)-oriented epitaxial thin films of UNi 2 Al 3 were grown on single crystalline YAlO 3 substrates cut in (010)- or (112)-direction. The high crystallographic quality of the samples was proved by several characterisation methods, such as X-ray analysis, RHEED and TEM. To study the magnetic structure of epitaxial thin films resonant magnetic X-ray scattering was employed. The magnetic order of thin the film samples, the formation of magnetic domains with different moment directions, and the magnetic correlation length were discussed. The electronic properties of the UNi 2 Al 3 thin films in the normal and superconducting states were investigated by means of transport measurements. A pronounced anisotropy of the temperature dependent resistivity ρ(T) was observed. Moreover, it was found that the temperature of the resistive superconducting transition depends on the current direction, providing evidence for multiband superconductivity in UNi 2 Al 3 . The initial slope of the upper critical field H' c2 (T) of the thin film samples suggests an unconventional spin-singlet superconducting state, as opposed to bulk single crystal data. To probe the superconducting gap of UNi 2 Al 3 directly by means of tunnelling spectroscopy many planar junctions of different design

  18. Uni-axial Elongational Viscosity of Linear and Branched polymer melts

    DEFF Research Database (Denmark)

    Hassager, Ole; Nielsen, Jens Kromann; Rasmussen, Henrik Koblitz

    2005-01-01

    About 40 years ago interest in the measurement of elongational viscosity of polymer melts started to grow. Here we present measurements of transient (and steady) uni-axial elongational viscosity, using the FSR, of the following melts: Four narrow MMD polystyrene (PS) samples with weight......-average molar mass Mw in the range of 50k to 390k. Three different bi-disperse samples, mixed from the narrow MMD PS. Two low-density polyethylene (LDPE) melts (Lupolen 1840D and 3020D). A steady-state viscosity was kept for 1-2.5 Hencky strain units in all measurements.The measurements on the bi-disperse PS...... melts have demonstrated that both the transient and steady elongational viscosity is quite sensitive to polydispersity. Bi-disperse PS resembles the behaviour of mono-disperse melts only at elongational rates larger then the inverse of maximal time constant of the smallest molecule. As observed in Boger...

  19. UniPOPS: Unified data reduction suite

    Science.gov (United States)

    Maddalena, Ronald J.; Garwood, Robert W.; Salter, Christopher J.; Stobie, Elizabeth B.; Cram, Thomas R.; Morgan, Lorrie; Vance, Bob; Hudson, Jerome

    2015-03-01

    UniPOPS, a suite of programs and utilities developed at the National Radio Astronomy Observatory (NRAO), reduced data from the observatory's single-dish telescopes: the Tucson 12-m, the Green Bank 140-ft, and archived data from the Green Bank 300-ft. The primary reduction programs, 'line' (for spectral-line reduction) and 'condar' (for continuum reduction), used the People-Oriented Parsing Service (POPS) as the command line interpreter. UniPOPS unified previous analysis packages and provided new capabilities; development of UniPOPS continued within the NRAO until 2004 when the 12-m was turned over to the Arizona Radio Observatory (ARO). The submitted code is version 3.5 from 2004, the last supported by the NRAO.

  20. UniGene Tabulator: a full parser for the UniGene format.

    Science.gov (United States)

    Lenzi, Luca; Frabetti, Flavia; Facchin, Federica; Casadei, Raffaella; Vitale, Lorenza; Canaider, Silvia; Carinci, Paolo; Zannotti, Maria; Strippoli, Pierluigi

    2006-10-15

    UniGene Tabulator 1.0 provides a solution for full parsing of UniGene flat file format; it implements a structured graphical representation of each data field present in UniGene following import into a common database managing system usable in a personal computer. This database includes related tables for sequence, protein similarity, sequence-tagged site (STS) and transcript map interval (TXMAP) data, plus a summary table where each record represents a UniGene cluster. UniGene Tabulator enables full local management of UniGene data, allowing parsing, querying, indexing, retrieving, exporting and analysis of UniGene data in a relational database form, usable on Macintosh (OS X 10.3.9 or later) and Windows (2000, with service pack 4, XP, with service pack 2 or later) operating systems-based computers. The current release, including both the FileMaker runtime applications, is freely available at http://apollo11.isto.unibo.it/software/

  1. Using a Single VCSEL Source Employing OFDM Downstream Signal and Remodulated OOK Upstream Signal for Bi-directional Visible Light Communications.

    Science.gov (United States)

    Yeh, Chien-Hung; Wei, Liang-Yu; Chow, Chi-Wai

    2017-11-20

    In this work, we propose and demonstrate for the first time up to our knowledge, using a 682 nm visible vertical-cavity surface-emitting laser (VCSEL) applied in a bi-directional wavelength remodulated VLC system with a free space transmission distance of 3 m. To achieve a high VLC downstream traffic, spectral efficient orthogonal-frequency-division-multiplexing quadrature-amplitude-modulation (OFDM-QAM) with bit and power loading algorithms are applied on the VCSEL in the central office (CO). The OFDM downstream wavelength is remodulated by an acousto-optic modulator (AOM) with OOK modulation to produce the upstream traffic in the client side. Hence, only a single VCSEL laser is needed for the proposed bi-directional VLC system, achieving 10.6 Gbit/s OFDM downstream and 2 Mbit/s remodulated OOK upstream simultaneously. For the proposed system, as a single laser source with wavelength remodulation is used, the laser wavelength and temperature managements at the client side are not needed; and the whole system could be cost effective and energy efficient.

  2. Magnetic fluctuations in UNi4B

    DEFF Research Database (Denmark)

    Mentink, S.A.M.; Mason, T.E.; Buyers, W.J.L.

    1997-01-01

    We investigate the magnetic fluctuation spectrum of the geometrically frustrated antiferromagnetic compound UNi4B, which partially orders below T-N = 20 K. An overdamped spin excitation is observed at the AF wave vector around 2.4 meV. Low-frequency, weakly Q-dependent inelastic scattering...

  3. Ion exchange equilibrium for some uni-univalent and uni-divalent ...

    African Journals Online (AJOL)

    The study on thermodynamics of ion exchange equilibrium for uni-univalent Cl-/I-, Cl-/Br-, and uni-divalent Cl-/SO42-, Cl-/C2O42- reaction systems was carried out using ion exchange resin Duolite A-102 D. The equilibrium constant K was calculated by taking into account the activity coefficient of ions both in solution as well ...

  4. Plant Protein Annotation in the UniProt Knowledgebase1

    Science.gov (United States)

    Schneider, Michel; Bairoch, Amos; Wu, Cathy H.; Apweiler, Rolf

    2005-01-01

    The Swiss-Prot, TrEMBL, Protein Information Resource (PIR), and DNA Data Bank of Japan (DDBJ) protein database activities have united to form the Universal Protein Resource (UniProt) Consortium. UniProt presents three database layers: the UniProt Archive, the UniProt Knowledgebase (UniProtKB), and the UniProt Reference Clusters. The UniProtKB consists of two sections: UniProtKB/Swiss-Prot (fully manually curated entries) and UniProtKB/TrEMBL (automated annotation, classification and extensive cross-references). New releases are published fortnightly. A specific Plant Proteome Annotation Program (http://www.expasy.org/sprot/ppap/) was initiated to cope with the increasing amount of data produced by the complete sequencing of plant genomes. Through UniProt, our aim is to provide the scientific community with a single, centralized, authoritative resource for protein sequences and functional information that will allow the plant community to fully explore and utilize the wealth of information available for both plant and nonplant model organisms. PMID:15888679

  5. Plant protein annotation in the UniProt Knowledgebase.

    Science.gov (United States)

    Schneider, Michel; Bairoch, Amos; Wu, Cathy H; Apweiler, Rolf

    2005-05-01

    The Swiss-Prot, TrEMBL, Protein Information Resource (PIR), and DNA Data Bank of Japan (DDBJ) protein database activities have united to form the Universal Protein Resource (UniProt) Consortium. UniProt presents three database layers: the UniProt Archive, the UniProt Knowledgebase (UniProtKB), and the UniProt Reference Clusters. The UniProtKB consists of two sections: UniProtKB/Swiss-Prot (fully manually curated entries) and UniProtKB/TrEMBL (automated annotation, classification and extensive cross-references). New releases are published fortnightly. A specific Plant Proteome Annotation Program (http://www.expasy.org/sprot/ppap/) was initiated to cope with the increasing amount of data produced by the complete sequencing of plant genomes. Through UniProt, our aim is to provide the scientific community with a single, centralized, authoritative resource for protein sequences and functional information that will allow the plant community to fully explore and utilize the wealth of information available for both plant and non-plant model organisms.

  6. Unconventional superconductivity of the heavy fermion compound UNi{sub 2}Al{sub 3}

    Energy Technology Data Exchange (ETDEWEB)

    Zakharov, Andrey

    2008-07-01

    The heavy fermion compound UNi{sub 2}Al{sub 3} exhibits the coexistence of superconductivity and magnetic order at low temperatures, stimulating speculations about possible exotic Cooper-pairing interaction in this superconductor. However, the preparation of good quality bulk single crystals of UNi{sub 2}Al{sub 3} has proven to be a non-trivial task due to metallurgical problems, which result in the formation of an UAl{sub 2} impurity phase and hence a strongly reduced sample purity. The present work concentrates on the preparation, characterization and electronic properties investigation of UNi{sub 2}Al{sub 3} single crystalline thin film samples. The preparation of thin films was accomplished in a molecular beam epitaxy (MBE) system. (100)-oriented epitaxial thin films of UNi{sub 2}Al{sub 3} were grown on single crystalline YAlO{sub 3} substrates cut in (010)- or (112)-direction. The high crystallographic quality of the samples was proved by several characterisation methods, such as X-ray analysis, RHEED and TEM. To study the magnetic structure of epitaxial thin films resonant magnetic X-ray scattering was employed. The magnetic order of thin the film samples, the formation of magnetic domains with different moment directions, and the magnetic correlation length were discussed. The electronic properties of the UNi{sub 2}Al{sub 3} thin films in the normal and superconducting states were investigated by means of transport measurements. A pronounced anisotropy of the temperature dependent resistivity {rho}(T) was observed. Moreover, it was found that the temperature of the resistive superconducting transition depends on the current direction, providing evidence for multiband superconductivity in UNi{sub 2}Al{sub 3}. The initial slope of the upper critical field H'{sub c2}(T) of the thin film samples suggests an unconventional spin-singlet superconducting state, as opposed to bulk single crystal data. To probe the superconducting gap of UNi{sub 2}Al{sub 3

  7. Trajectories in higher education: ProUni in focus

    OpenAIRE

    Felicetti,Vera Lucia; Cabrera,Alberto F.

    2017-01-01

    Abstract Trajectories in higher education and the University for All Program (ProUni) are the central theme of this paper. The research question was: To what extent were some factors experienced during university difficulties in the academic trajectory of ProUni and non-ProUni graduates? The approach was quantitative with an explanatory goal. Descriptive and inferential statistics were used in the data analysis. The research subjects were 197 higher education graduates from a Southern Brazil ...

  8. Antiferromagnetism and magnetoleasticity of UNiAl

    International Nuclear Information System (INIS)

    Sechovsky, V.; Honda, F.; Svoboda, P.; Prokes, K.; Chernyavsky, O.; Doerr, M.; Rotter, M.; Loewenhaupt, M.

    2003-01-01

    We report on a thermal-expansion (TE) and magnetostriction (MS) study of the antiferromagnet UNiAl at temperatures 2-90 K and in magnetic fields up to 16.5 T applied along the c-axis. The TE along the c-axis (in 0 T) exhibits a broad valley centered around 35 K. This anomaly is nearly removed in 16.5 T. For T≤7 K a sharp metamagnetic transition (MT) observed in UNiAl at 11.4 T and it is accompanied by abrupt MS effects of +1.3x10 -4 and -1.8x10 -4 along the a- and c-axis, respectively. In fields above the MT a negligible additional negative MS is induced along c-axis whereas the a-axis and consequently the volume expand considerably, which indicates a field-induced enhancement of the U magnetic moment. T>7 K, the MT becomes gradually smeared out but a non-negligible MS is observed even for T>T N . In the light of these results the TE anomaly measured in zero field may be attributed to AF that survives at temperatures far above T N

  9. Magnetic phase diagrams of UNiGe

    International Nuclear Information System (INIS)

    Nakotte, H.; Hagmusa, I.H.; Klaasse, J.C.P.; Hagmusa, I.H.; Klaasse, J.C.P.

    1997-01-01

    UNiGe undergoes two magnetic transitions in zero field. Here, the magnetic diagrams of UNiGe for B parallel b and B parallel c are reported. We performed temperatures scans of the magnetization in static magnetic fields up to 19.5T applied along the b and c axes. For both orientations 3 magnetic phases have been identified in the B-T diagrams. We confirmed the previously reported phase boundaries for B parallel c, and in addition we determined the location of the phase boundaries for B parallel b. We discuss a possible relationship of the two zero-field antiferromagnetic phases (commensurate: T<42K; incommensurate: 42K< T<50K) and the field-induced phase, which, at low temperatures, occurs between 18 and 25T or 4 and 10T for B parallel b or B parallel c, respectively. Finally, we discuss the field dependence of the electronic contribution γ to the specific heat for B parallel c up to 17.5T, and we find that its field dependence is similar to the one found in more itinerant uranium compounds

  10. Effects of hydrogenation on magnetism of UNiGe

    Energy Technology Data Exchange (ETDEWEB)

    Adamska, A.M., E-mail: anna@mag.mff.cuni.cz [Department of Condensed Matter Physics, Charles University, Ke Karlovu 5, 12116 Prague 2 (Czech Republic); Faculty of Physics and Applied Computer Science, AGH University of Science and Technology, al. Mickiewicza 30, 30 059 Cracow (Poland); Havela, L. [Department of Condensed Matter Physics, Charles University, Ke Karlovu 5, 12116 Prague 2 (Czech Republic); Prochazka, J. [Faculty of Sports and Physical Education, Charles University, Jose Martiho 31, 16252, Prague 6 (Czech Republic); Andreev, A.V. [Institute of Physics, Academy of Sciences, Na Slovance 2, 18221 Prague (Czech Republic); Skourski, Y. [Dresden High Magnetic Field Laboratory, Helmholtz-Zentrum Dresden-Rossendorf, 01314 Dresden (Germany)

    2011-12-15

    U-based intermetallic compound UNiGe absorbs hydrogen up to the stoichiometry UNiGeH{sub 1.2}. In analogy to other compounds with the TiNiSi-type of structure, the structure is modified into hexagonal. The zig-zag U-chains are stretched, the U-U spacing is largely enhanced and the ordering temperature increases up to 100 K. The ordered state has a spontaneous moment, but it is unlikely to be a simple ferromagnet. - Highlights: > UNiGe exhibits a variety of magnetic properties. > Hydrogenation modifies the crystal, electronic structure, and the magnetic properties. > Upon hydrogenation, the crystal symmetry of UNiGe increases from orthorhombic to hexagonal. > Magnetic ordering temperature of UNiGe (T{sub N}=44 K) is double in the hydride, possible second phase transition.

  11. The iDuo Bi-compartmental Knee Replacement: Our Early Experience.

    Directory of Open Access Journals (Sweden)

    Peter Jemmett

    2016-12-01

    Our early results suggest that the iDuo knee is a good option for those with isolated bi-compartmental disease and outcome scores are comparable with those reported for the BKA. This bi-compartmental design may bridge the gap between the uni-compartmental and total knee replacement. The choice between monolithic or modular designs remains in debate. We will continue to use this prosthesis for a carefully selected group of patients.

  12. On Training Bi-directional Neural Network Language Model with Noise Contrastive Estimation

    OpenAIRE

    He, Tianxing; Zhang, Yu; Droppo, Jasha; Yu, Kai

    2016-01-01

    We propose to train bi-directional neural network language model(NNLM) with noise contrastive estimation(NCE). Experiments are conducted on a rescore task on the PTB data set. It is shown that NCE-trained bi-directional NNLM outperformed the one trained by conventional maximum likelihood training. But still(regretfully), it did not out-perform the baseline uni-directional NNLM.

  13. Del biopoder al cinepoder en los dispositivos de bioseguridad de la Unión Europea

    Directory of Open Access Journals (Sweden)

    Pedro Torrejón

    2016-09-01

    Full Text Available En pleno siglo XXI, la biomedicina y la biotecnología se han convertido en dos características fundamentales del mundo en el que vivimos. Sin duda, el autor que más se ha trabajado para analizar las repercusiones políticas de estos avances ha sido Michel Foucault a partir de su concepción del biopoder y posteriormente Nikolas Rose al hablar de ethopolítica. Nuestra propuesta afirma que las ideas de ambos sobre lo biótico se engloban en un dispositivo de gestión y administración mayor que lo convierte en una trayectoria o flujo de movimiento, al que denominamos cinepoder. Mediante un estudio de caso de los dispositivos de bioseguridad de la Unión Europea, ilustraremos las características del cinepoder y sus implicaciones sobre el bios.

  14. Facile synthesis of Bi/BiOCl composite with selective photocatalytic properties

    International Nuclear Information System (INIS)

    Chen, Dongling; Zhang, Min; Lu, Qiuju; Chen, Junfang; Liu, Bitao; Wang, Zhaofeng

    2015-01-01

    This paper presents a novel and facile method to fabricate Bi/BiOCl composites with dominant (001) facets in situ via a microwave reduction route. Different characterization techniques, including X-ray diffraction (XRD), field-emission scanning electron microscopy (FE-SEM), transmission scanning electron microscopy (TEM), UV–vis diffuse reflectance spectrometry (DRS), X-ray photoelectron spectroscopy (XPS), electron spin resonance spectroscopy (ESR), cathodoluminescence spectrum (CL), and lifetime, have been employed to investigate the structure, optical and electrical properties of the Bi/BiOCl composites. The experimental results show that the introduction of Bi particles can efficiently enhance the photocatalytic performance of BiOCl for the degradation of several dyes under ultraviolet (UV) light irradiation, especially for negative charged methyl orange (MO). Unlike the UV photocatalytic performance, such Bi/BiOCl composite shows higher degradation efficiency towards rhodamine B (RhB) than MO and methylene blue (MB) under visible light irradiation. This special photocatalytic performance can be ascribed to the synergistic effect between oxygen vacancies and Bi particles. This work provides new insights about the photodegradation mechanisms of MO, MB and RhB under UV and visible light irradiation, which would be helpful to guide the selection of an appropriate catalyst for other pollutants. - Highlights: • Bi/BiOCl composites were synthesized via a microwave reduction. • Tunable selectivity photocatalytic activity can be achieved. • Photodegradation mechanism under UV and visible light were proposed

  15. Thermodynamics of ion exchange equilibrium for some uni ...

    African Journals Online (AJOL)

    The study on thermodynamics of ion exchange equilibrium for uni-univalent Cl-/I-, Cl-/Br-, and uni-divalent Cl-/SO42-, Cl-/C2O42- reaction systems was carried out using ion exchange resin Indion FF-IP. The equilibrium constant K was calculated by taking into account the activity coefficient of ions both in solution as well as ...

  16. The Universal Protein Resource (UniProt): an expanding universe of protein information.

    Science.gov (United States)

    Wu, Cathy H; Apweiler, Rolf; Bairoch, Amos; Natale, Darren A; Barker, Winona C; Boeckmann, Brigitte; Ferro, Serenella; Gasteiger, Elisabeth; Huang, Hongzhan; Lopez, Rodrigo; Magrane, Michele; Martin, Maria J; Mazumder, Raja; O'Donovan, Claire; Redaschi, Nicole; Suzek, Baris

    2006-01-01

    The Universal Protein Resource (UniProt) provides a central resource on protein sequences and functional annotation with three database components, each addressing a key need in protein bioinformatics. The UniProt Knowledgebase (UniProtKB), comprising the manually annotated UniProtKB/Swiss-Prot section and the automatically annotated UniProtKB/TrEMBL section, is the preeminent storehouse of protein annotation. The extensive cross-references, functional and feature annotations and literature-based evidence attribution enable scientists to analyse proteins and query across databases. The UniProt Reference Clusters (UniRef) speed similarity searches via sequence space compression by merging sequences that are 100% (UniRef100), 90% (UniRef90) or 50% (UniRef50) identical. Finally, the UniProt Archive (UniParc) stores all publicly available protein sequences, containing the history of sequence data with links to the source databases. UniProt databases continue to grow in size and in availability of information. Recent and upcoming changes to database contents, formats, controlled vocabularies and services are described. New download availability includes all major releases of UniProtKB, sequence collections by taxonomic division and complete proteomes. A bibliography mapping service has been added, and an ID mapping service will be available soon. UniProt databases can be accessed online at http://www.uniprot.org or downloaded at ftp://ftp.uniprot.org/pub/databases/.

  17. Reduction in thermal conductivity of BiSbTe lump

    Energy Technology Data Exchange (ETDEWEB)

    Ahmad, Kaleem [King Saud University, Sustainable Energy Technologies Center, College of Engineering, PO Box 800, Riyadh (Saudi Arabia); Wan, C. [Tsinghua University, State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Beijing (China); Al-Eshaikh, M.A.; Kadachi, A.N. [King Saud University, Research Center, College of Engineering, PO Box 800, Riyadh (Saudi Arabia)

    2017-03-15

    In this work, systematic investigations on the thermal conductivities of BiSbTe lump, microstructured pristine BiSbTe bulk and single wall carbon nanotubes (SWCNTs)/BiSbTe bulk nanocomposites were performed. BiSbTe lumps were crushed to form a coarse powder (200 μm) and effect of particle size reduction on the effective thermal conductivity of BiSbTe (200 μm) bulk were analyzed. For further reduction in the conductivity, a two pronged strategy has been employed. First, additional refinement of BiSbTe (200 μm) were performed through ball milling in an inert environment. Second, SWCNTs in 0.75, and 1.0 vol% were distributed uniformly in the fine BiSbTe ball milled powder. The results showed that the effective thermal conductivities decrease with the reduction in the particle size from lump to BiSbTe (200 μm) bulk as well as with the addition of SWCNTs accompanied by further refinement of BiSbTe particles. The significant reduction in thermal conductivities of the lump was achieved for pure BiSbTe (200 μm) bulk and 0.75 vol% of SWCNTs/BiSbTe composite. This can be ascribed to the enhanced phonon scattering by the grain boundaries between the nanostructured BiSbTe particles as well as the interfaces between BiSbTe and the low dimensional carbon nanotubes. (orig.)

  18. UniProtKB/Swiss-Prot, the Manually Annotated Section of the UniProt KnowledgeBase: How to Use the Entry View.

    Science.gov (United States)

    Boutet, Emmanuel; Lieberherr, Damien; Tognolli, Michael; Schneider, Michel; Bansal, Parit; Bridge, Alan J; Poux, Sylvain; Bougueleret, Lydie; Xenarios, Ioannis

    2016-01-01

    The Universal Protein Resource (UniProt, http://www.uniprot.org ) consortium is an initiative of the SIB Swiss Institute of Bioinformatics (SIB), the European Bioinformatics Institute (EBI) and the Protein Information Resource (PIR) to provide the scientific community with a central resource for protein sequences and functional information. The UniProt consortium maintains the UniProt KnowledgeBase (UniProtKB), updated every 4 weeks, and several supplementary databases including the UniProt Reference Clusters (UniRef) and the UniProt Archive (UniParc).The Swiss-Prot section of the UniProt KnowledgeBase (UniProtKB/Swiss-Prot) contains publicly available expertly manually annotated protein sequences obtained from a broad spectrum of organisms. Plant protein entries are produced in the frame of the Plant Proteome Annotation Program (PPAP), with an emphasis on characterized proteins of Arabidopsis thaliana and Oryza sativa. High level annotations provided by UniProtKB/Swiss-Prot are widely used to predict annotation of newly available proteins through automatic pipelines.The purpose of this chapter is to present a guided tour of a UniProtKB/Swiss-Prot entry. We will also present some of the tools and databases that are linked to each entry.

  19. Lateralized Implicit Sequence Learning in Uni- and Bi-Manual Conditions

    Science.gov (United States)

    Schmitz, Remy; Pasquali, Antoine; Cleeremans, Axel; Peigneux, Philippe

    2013-01-01

    It has been proposed that the right hemisphere (RH) is better suited to acquire novel material whereas the left hemisphere (LH) is more able to process well-routinized information. Here, we ask whether this potential dissociation also manifests itself in an implicit learning task. Using a lateralized version of the serial reaction time task (SRT),…

  20. Lateralized implicit sequence learning in uni- and bi-manual conditions.

    Science.gov (United States)

    Schmitz, Rémy; Pasquali, Antoine; Cleeremans, Axel; Peigneux, Philippe

    2013-02-01

    It has been proposed that the right hemisphere (RH) is better suited to acquire novel material whereas the left hemisphere (LH) is more able to process well-routinized information. Here, we ask whether this potential dissociation also manifests itself in an implicit learning task. Using a lateralized version of the serial reaction time task (SRT), we tested whether participants trained in a divided visual field condition primarily stimulating the RH would learn the implicit regularities embedded in sequential material faster than participants in a condition favoring LH processing. In the first study, half of participants were presented sequences in the left (vs. right) visual field, and had to respond using their ipsilateral hand (unimanual condition), hence making visuo-motor processing possible within the same hemisphere. Results showed successful implicit sequence learning, as indicated by increased reaction time for a transfer sequence in both hemispheric conditions and lack of conscious knowledge in a generation task. There was, however, no evidence of interhemispheric differences. In the second study, we hypothesized that a bimanual response version of the lateralized SRT, which requires interhemispheric communication and increases computational and cognitive processing loads, would favor RH-dependent visuospatial/attentional processes. In this bimanual condition, our results revealed a much higher transfer effect in the RH than in the LH condition, suggesting higher RH sensitivity to the processing of novel sequential material. This LH/RH difference was interpreted within the framework of the Novelty-Routinization model [Goldberg, E., & Costa, L. D. (1981). Hemisphere differences in the acquisition and use of descriptive systems. Brain and Language, 14(1), 144-173] and interhemispheric interactions in attentional processing [Banich, M. T. (1998). The missing link: the role of interhemispheric interaction in attentional processing. Brain and Cognition, 36(2), 128-157]. Copyright © 2012 Elsevier Inc. All rights reserved.

  1. Transport properties and phase diagram of UNi2Si2

    International Nuclear Information System (INIS)

    Ning, Y.B.; Garrett, J.D.; Datars, W.R.; McMaster Univ., Hamilton, ON

    1992-01-01

    The resistivity and Hall coefficient of single-crystal UNi 2 Si 2 have been studied in detail for the temperature range 4.2-300 K. The resistivity of UNi 2 Si 2 is largely due to magnetic scattering and the phonon scattering contribution is estimated to be about 14% at room temperature. At low temperatures, the resistivity can be described by a gapped spin-wave model plus a T 2 term. The temperature dependence of the Hall coefficient is accounted for by a theoretical model invoking skew scattering of conduction electrons by localized magnetic moments. Among the three magnetic phase transition temperatures, the two lower ones are found to be magnetic field dependent and shift with the field applied along the tetragonal c axis. Using the resistivity measurement in an applied magnetic field, a field-temperature phase diagram of UNi 2 Si 2 is presented. (author)

  2. An Observational Approach to Testing Bi-Directional Parent-Child Interactions as Influential to Child Eating and Weight

    Science.gov (United States)

    Demir, Defne; Skouteris, Helen; Dell'Aquila, Daniela; Aksan, Nazan; McCabe, Marita P.; Ricciardelli, Lina A.; Milgrom, Jeannette; Baur, Louise A.

    2012-01-01

    Obesity among children has been on the rise globally for the past few decades. Previous research has centred mainly on self/parent-reported measures examining only uni-directional parental feeding styles and practices. Recent discussions in the literature have raised the importance of bi-directional parent-child interactions in influencing…

  3. Magnetic phenomena in UNi1-xRhxAl compounds

    International Nuclear Information System (INIS)

    Andreev, A.V.; Dremov, R.V.; Uwatoko, Y.; Mushnikov, N.V.; Goto, T.; Shiokawa, Y.; Homma, Y.; Hagmusa, I.H.; Klaasse, J.C.P.

    1999-01-01

    We report on structure investigation and magnetization study of UNi 1-x Rh x Al solid solutions between an antiferromagnet UNiAl and a ferromagnet URhAl. The ZrNiAl-type hexagonal crystal structure of the parent compounds is preserved in the whole concentration range. Magnetization was measured as a function of magnetic field, temperature and external hydrostatic pressure. The observed complex evolution of magnetic phenomena with Rh substitution for Ni is discussed in terms of effects of the varying 5f-ligand hybridization. A tentative magnetic phase diagram is proposed. (orig.)

  4. Uni-directional consumer-resource theory characterizing transitions of interaction outcomes

    Science.gov (United States)

    Wang, Y.; DeAngelis, D.L.; Holland, J.N.

    2011-01-01

    A resource is considered here to be a biotic population that helps to maintain the population growth of its consumers, whereas a consumer utilizes a resource and in turn decreases its growth rate. Bi-directional consumer-resource (C-R) interactions have been the object of recent theory. In these interactions, each species acts, in some respects, as both a consumer and a resource of the other, which is the basis of many mutualisms. In uni-directional C-R interactions between two species, one acts as a consumer and the other as a material and/or energy resource, while neither acts as both. The relationship between insect pollinator/seed parasites and the host plant is an example of the latter interaction type of C-R, as the insect provides no material resource to the plant (though it provides a pollination service). In this paper we consider a different variation of the uni-directional C-R interaction, in which the resource species has both positive and negative effects on the consumer species, while the consumer has only a negative effect on the resource. A predator-prey system in which the prey is able to kill or consume predator eggs or larvae is an example. Our aim is to demonstrate mechanisms by which interaction outcomes of this system vary with different conditions, and thus to extend the uni-directional C-R theory established by Holland and DeAngelis (2009). By the analysis of a specific two-species system, it is shown that there is no periodic solution of the system, and the parameter (factor) space can be divided into six regions, which correspond to predation/parasitism, amensalism, and competition. The interaction outcomes of the system transition smoothly when the parameters are changed continuously in the six regions and/or initial densities of the species vary in a smooth fashion. Varying a pair of parameters can also result in the transitions. The analysis leads to both conditions under which the species approach their maximal densities, and

  5. Bi-Force

    DEFF Research Database (Denmark)

    Sun, Peng; Speicher, Nora K; Röttger, Richard

    2014-01-01

    of pairwise similarities. We first evaluated the power of Bi-Force to solve dedicated bicluster editing problems by comparing Bi-Force with two existing algorithms in the BiCluE software package. We then followed a biclustering evaluation protocol in a recent review paper from Eren et al. (2013) (A...... comparative analysis of biclustering algorithms for gene expressiondata. Brief. Bioinform., 14:279-292.) and compared Bi-Force against eight existing tools: FABIA, QUBIC, Cheng and Church, Plaid, BiMax, Spectral, xMOTIFs and ISA. To this end, a suite of synthetic datasets as well as nine large gene expression...

  6. UniBoard: generic hardware for radio astronomy signal processing

    Science.gov (United States)

    Hargreaves, J. E.

    2012-09-01

    UniBoard is a generic high-performance computing platform for radio astronomy, developed as a Joint Research Activity in the RadioNet FP7 Programme. The hardware comprises eight Altera Stratix IV Field Programmable Gate Arrays (FPGAs) interconnected by a high speed transceiver mesh. Each FPGA is connected to two DDR3 memory modules and three external 10Gbps ports. In addition, a total of 128 low voltage differential input lines permit connection to external ADC cards. The DSP capability of the board exceeds 644E9 complex multiply-accumulate operations per second. The first production run of eight boards was distributed to partners in The Netherlands, France, Italy, UK, China and Korea in May 2011, with a further production runs completed in December 2011 and early 2012. The function of the board is determined by the firmware loaded into its FPGAs. Current applications include beamformers, correlators, digital receivers, RFI mitigation for pulsar astronomy, and pulsar gating and search machines The new UniBoard based correlator for the European VLBI network (EVN) uses an FX architecture with half the resources of the board devoted to station based processing: delay and phase correction and channelization, and half to the correlation function. A single UniBoard can process a 64MHz band from 32 stations, 2 polarizations, sampled at 8 bit. Adding more UniBoards can expand the total bandwidth of the correlator. The design is able to process both prerecorded and real time (eVLBI) data.

  7. IFRSs in de Europese Unie : Een paard van Troje?

    NARCIS (Netherlands)

    Vergoossen, R.G.A.

    2007-01-01

    De regelgeving rondom de externe financiële verslaggeving van ondernemingen is ingrijpend veranderd. De veranderingen houden vooral verband met het van kracht worden van de International Financial Reporting Standards (IFRS) voor het beursgenoteerde bedrijfsleven in de Europese Unie. De introductie

  8. Uni- and omnidirectional simulation tools for integrated optics

    NARCIS (Netherlands)

    Stoffer, Remco

    2001-01-01

    This thesis presents several improvements on simulation methods in integrated optics, as well as some new methods. Both uni- and omnidirectional tools are presented; for the unidirectional methods, the emphasis is on higher-order accuracy; for the omnidirectional methods, the boundary conditions are

  9. Anmeldung in ILIAS ohne Uni-Login-ID

    OpenAIRE

    Schanz, Nadja

    2016-01-01

    Gewusst wie...! Online-Tutorial der Universitätsbibliothek Tübingen. Erklärt die Anmeldung in Ilias zu Führungen ohne Uni-Login-ID Online Tutorial from university library tuebingen. teaches how to register in Ilias for courses and guided tours without university login

  10. Anisotropic Material Behavior of Uni-axially Compacted Graphite Matrix for HTGR Fuel Compact Fabrication

    Energy Technology Data Exchange (ETDEWEB)

    Lee, Young-Woo; Yeo, Seunghwan; Yoon, Ji-Hae; Cho, Moon Sung [KAERI, Daejeon (Korea, Republic of)

    2016-05-15

    In developing the fuel compact fabrication technology, and fuel graphite material to meet the required material properties, it is essential to investigate the relationship among the process parameters of the matrix graphite powder preparation, the fabrication parameters of fuel element green compact and the heat treatments conditions and the material properties of fuel element. It was observed, during this development, that the pressing technique employed for the compaction fabrication prior to the two successive heat treatments (carbonization and final high temperature heat treatment) was of extreme importance in determining the material properties of the final compact product. In this work, the material behavior of the uni-axially pressed graphite matrix during the carbonization and final heat treatment are evaluated and summarized along the different directions, viz., perpendicular and parallel directions to pressing direction. In this work, the dimensional variations and variations in thermal expansion, thermal conductivity and Vickers hardness of the graphite matrix compact samples in the axial and radial directions prepared by uni-axial pressing are evaluated, and compared with those of samples prepared by cold isostatic pressing with the available data. From this work, the followings are observed. 1) Dimensional changes of matrix graphite green compacts during carbonization show that the difference in radial and axial variations shows a large anisotropic behavior in shrinkage. The radial variation is very small while the axial variation is large. During carbonization, the stresses caused by the force would be released in to the axial direction together with the phenolic resin vapor. 2) Dimensional variation of compact samples in perpendicular and parallel directions during carbonization shows a large difference in behavior when compact sample is prepared by uni-axial pressing. However, when compact sample is prepared by cold isostatic pressing, there is

  11. Anisotropic Material Behavior of Uni-axially Compacted Graphite Matrix for HTGR Fuel Compact Fabrication

    International Nuclear Information System (INIS)

    Lee, Young-Woo; Yeo, Seunghwan; Yoon, Ji-Hae; Cho, Moon Sung

    2016-01-01

    In developing the fuel compact fabrication technology, and fuel graphite material to meet the required material properties, it is essential to investigate the relationship among the process parameters of the matrix graphite powder preparation, the fabrication parameters of fuel element green compact and the heat treatments conditions and the material properties of fuel element. It was observed, during this development, that the pressing technique employed for the compaction fabrication prior to the two successive heat treatments (carbonization and final high temperature heat treatment) was of extreme importance in determining the material properties of the final compact product. In this work, the material behavior of the uni-axially pressed graphite matrix during the carbonization and final heat treatment are evaluated and summarized along the different directions, viz., perpendicular and parallel directions to pressing direction. In this work, the dimensional variations and variations in thermal expansion, thermal conductivity and Vickers hardness of the graphite matrix compact samples in the axial and radial directions prepared by uni-axial pressing are evaluated, and compared with those of samples prepared by cold isostatic pressing with the available data. From this work, the followings are observed. 1) Dimensional changes of matrix graphite green compacts during carbonization show that the difference in radial and axial variations shows a large anisotropic behavior in shrinkage. The radial variation is very small while the axial variation is large. During carbonization, the stresses caused by the force would be released in to the axial direction together with the phenolic resin vapor. 2) Dimensional variation of compact samples in perpendicular and parallel directions during carbonization shows a large difference in behavior when compact sample is prepared by uni-axial pressing. However, when compact sample is prepared by cold isostatic pressing, there is

  12. A União Bancária resolve?

    Directory of Open Access Journals (Sweden)

    Nuno Cunha Rodrigues

    2016-05-01

    Full Text Available O presente artigo corresponde ao texto da intervenção realizada no dia 26 de janeiro de 2016, na Faculdade de Direito de Lisboa, na conferência organizada pelo IDEFF e pelo Instituto Europeu subordinada ao tema “O Sistema Financeiro Português”. Partindo da análise dos três pilares da união bancária, o artigo reflete sobre a resolução de dois bancos em Portugal – o BES (Novo Banco e o BANIF – bem como sobre o surgimento daquela união no contexto da crise financeira, concluindo que, sem uma verdadeira união económica e monetária, ainda por concretizar, a união bancária não permitirá resolver alguns dos problemas estruturais da União Europeia. | "Does the Banking Union solve?" The article is the text of the speech held on January 26, 2016, at the Law School of Lisbon, at the conference organized by IDEFF and the European Institute entitled "The Portuguese financial system." Based on the analysis of the three pillars of the banking union, the article reflects on the resolution of two banks in Portugal - BES (Novo Banco and BANIF - as well as the emergence of the banking union in the context of the financial crisis, concluding that without true economic and monetary union, yet to be achieved, the banking union will not be able to solve some of the structural problems of the European Union.

  13. In vivo kinematics of a robot-assisted uni- and multi-compartmental knee arthroplasty.

    Science.gov (United States)

    Watanabe, Toshifumi; Abbasi, Ali Z; Conditt, Michael A; Christopher, Jennifer; Kreuzer, Stefan; Otto, Jason K; Banks, Scott A

    2014-07-01

    There is great interest in providing reliable and durable treatments for one- and two-compartment arthritic degeneration of the cruciate-ligament intact knee. One approach is to resurface only the diseased compartments with discrete unicompartmental components, retaining the undamaged compartment(s). However, placing multiple small implants into the knee presents a greater surgical challenge than total knee arthroplasty, so it is not certain that the natural knee mechanics can be maintained or restored. The goal of this study was to determine whether near-normal knee kinematics can be obtained with a robot-assisted multi-compartmental knee arthroplasty. Thirteen patients with 15 multi-compartmental knee arthroplasties using haptic robotic-assisted bone preparation were involved in this study. Nine subjects received a medial unicompartmental knee arthroplasty (UKA), three subjects received a medial UKA and patellofemoral (PF) arthroplasty, and three subjects received medial and lateral bi-unicondylar arthroplasty. Knee motions were recorded using video-fluoroscopy an average of 13 months (6-29 months) after surgery during stair and kneeling activities. The three-dimensional position and orientation of the implant components were determined using model-image registration techniques. Knee kinematics during maximum flexion kneeling showed femoral external rotation and posterior lateral condylar translation. All knees showed femoral external rotation and posterior condylar translation with flexion during the step activity. Knees with medial UKA and PF arthroplasty showed the most femoral external rotation and posterior translation, and knees with bicondylar UKA showed the least. Knees with accurately placed uni- or bi-compartmental arthroplasty exhibited stable knee kinematics consistent with intact and functioning cruciate ligaments. The patterns of tibiofemoral motion were more similar to natural knees than commonly has been observed in knees with total knee

  14. IJUE. Tema 3. Les competències de la Unió Europea

    OpenAIRE

    Torres Pérez, María

    2018-01-01

    PowerPoint del Tema 3 de la asignatura "Institucions Jurídiques de la Unió Europea". Curso académico 2017-2018. Tema 3. Les competències de la Unió Europea. 1. L’atribució de competències a la Unió Europea. 2. La delimitació de les competències a la Unió Europea. 3. Els principis que regeixen l’exercici de les competències. 4. L’exercici de les competències de la Unió per “alguns Estats membres”.

  15. Effect of pressure on thermal expansion of UNiGa

    International Nuclear Information System (INIS)

    Honda, F.; Andreev, A.V.; Havela, L.; Prokes, K.; Sechovsky, V.

    1997-01-01

    The thermal expansion of single crystalline UNiGa has been measured along the crystallographic axes (a and c) under pressures up to 1.1 GPa. The linear thermal expansion both in the paramagnetic and antiferromagnetic ranges is strongly anisotropic. The antiferromagnetic ordering is accompanied by considerable (10 -4 ) linear spontaneous magnetostrictions (along the a- and c-axis) of different signs (-0.8 x 10 -4 and 1.8 x 10 -4 ). The mutual compensation of these two effects causes the volume effect to be rather small (∝10 -5 ). Two of the four magnetic phase transitions in UNiGa indicated by the expansion anomalies under ambient pressure are suppressed by pressures above 0.5 GPa. Results of our experiments allow to construct a pressure-temperature (p-T) magnetic phase diagram. (orig.)

  16. UniFlex - Collaborative on-line learning environment tool

    Directory of Open Access Journals (Sweden)

    Ole Borch

    2004-05-01

    Full Text Available

    Første gang publiceret i UNEV nr. 2: E-læringsplatforme - muligheder og potentialer, januar - marts 2004, red. Tom Nyvand og Michael Pedersen. ISSN 1603-5518.

    Increasing demands for remote on-line education are changing the way teaching and learning is performed. New behavior in using pedagogy and supporting technology is needed to drive the learning process. To facilitate the use of services for selected activities to participants in distance education, a web site named UniFlex (University Flexible learning has been developed and brought into use. The site is a comprehensive set of bookmarks including course taking, upload/download, and - of special significance - collaborative on-line project work. UniFlex has been developed to meet the requirement for a simple and cheap personalized interactive site, supporting problem oriented and project organized study form, which has characterized Aalborg University for more than 27 years.

  17. UniFlex - Collaborative on-line learning environment tool

    Directory of Open Access Journals (Sweden)

    Ole Borch

    2004-03-01

    Full Text Available Første gang publiceret i UNEV nr. 2: E-læringsplatforme - muligheder og potentialer, januar - marts 2004, red. Tom Nyvand og Michael Pedersen. ISSN 1603-5518. Increasing demands for remote on-line education are changing the way teaching and learning is performed. New behavior in using pedagogy and supporting technology is needed to drive the learning process. To facilitate the use of services for selected activities to participants in distance education, a web site named UniFlex (University Flexible learning has been developed and brought into use. The site is a comprehensive set of bookmarks including course taking, upload/download, and - of special significance - collaborative on-line project work. UniFlex has been developed to meet the requirement for a simple and cheap personalized interactive site, supporting problem oriented and project organized study form, which has characterized Aalborg University for more than 27 years.

  18. Magnetization study of UNiSi and its hydride

    Czech Academy of Sciences Publication Activity Database

    Šebek, Josef; Andreev, Alexander V.; Honda, F.; Kolomiets, A. V.; Havela, L.; Sechovský, V.

    2003-01-01

    Roč. 34, č. 2 (2003), s. 1457-1460 ISSN 0587-4254. [International Conference on Strongly Correlated Electron Systems (SCES 02). Cracow, 10.07.2002-13.07.2002] R&D Projects: GA ČR GA202/02/0739 Institutional research plan: CEZ:AV0Z1010914; CEZ:MSM 113200002 Keywords : UNiSi * magnetic measurements * hydride Subject RIV: BM - Solid Matter Physics ; Magnetism Impact factor: 0.752, year: 2003

  19. High-resolution quantization based on soliton self-frequency shift and spectral compression in a bi-directional comb-fiber architecture

    Science.gov (United States)

    Zhang, Xuyan; Zhang, Zhiyao; Wang, Shubing; Liang, Dong; Li, Heping; Liu, Yong

    2018-03-01

    We propose and demonstrate an approach that can achieve high-resolution quantization by employing soliton self-frequency shift and spectral compression. Our approach is based on a bi-directional comb-fiber architecture which is composed of a Sagnac-loop-based mirror and a comb-like combination of N sections of interleaved single-mode fibers and high nonlinear fibers. The Sagnac-loop-based mirror placed at the terminal of a bus line reflects the optical pulses back to the bus line to achieve additional N-stage spectral compression, thus single-stage soliton self-frequency shift (SSFS) and (2 N - 1)-stage spectral compression are realized in the bi-directional scheme. The fiber length in the architecture is numerically optimized, and the proposed quantization scheme is evaluated by both simulation and experiment in the case of N = 2. In the experiment, a quantization resolution of 6.2 bits is obtained, which is 1.2-bit higher than that of its uni-directional counterpart.

  20. Detection of high mass cluster ions sputtered from Bi surfaces

    Energy Technology Data Exchange (ETDEWEB)

    Shepard, A; Hewitt, R W; Slusser, G J; Baitinger, W E; Cooks, R G; Winograd, N [Purdue Univ., Lafayette, Ind. (USA). Dept. of Chemistry; Delgass, W N [Purdue Univ., Lafayette, Ind. (USA); Varon, A; Devant, G [Societe RIBER, 92 - Rueil-Malmaison (France)

    1976-12-01

    The technique of secondary ion mass spectrometry (SIMS) has been employed to detect Bi/sup 3 +/ ions and associated oxides Bi/sub 3/Osub(x)sup(+)(x=1 to 4) from a Bi foil. Using a 3 keV Ar/sup +/ ion primary beam of 5x10/sup -7/ A/cm/sup 2/, mass resolution to nearly 700 with the requisite sensitivity has been achieved. The Bi surface was also monitored by X-ray photoelectron spectroscopy (XPS or ESCA). The presence of a weak O 1s peak at 532.7 eV and a strong SIMS Bi/sup 3 +/ peak is interpreted to mean that the oxygen is weakly incorporated into the Bi lattice without disrupting metal-metal bonds.

  1. Integrating UniTree with the data migration API

    Science.gov (United States)

    Schrodel, David G.

    1994-01-01

    The Data Migration Application Programming Interface (DMAPI) has the potential to allow developers of open systems Hierarchical Storage Management (HSM) products to virtualize native file systems without the requirement to make changes to the underlying operating system. This paper describes advantages of virtualizing native file systems in hierarchical storage management systems, the DMAPI at a high level, what the goals are for the interface, and the integration of the Convex UniTree+HSM with DMAPI along with some of the benefits derived in the resulting product.

  2. The UniProtKB/Swiss-Prot knowledgebase and its Plant Proteome Annotation Program.

    Science.gov (United States)

    Schneider, Michel; Lane, Lydie; Boutet, Emmanuel; Lieberherr, Damien; Tognolli, Michael; Bougueleret, Lydie; Bairoch, Amos

    2009-04-13

    The UniProt knowledgebase, UniProtKB, is the main product of the UniProt consortium. It consists of two sections, UniProtKB/Swiss-Prot, the manually curated section, and UniProtKB/TrEMBL, the computer translation of the EMBL/GenBank/DDBJ nucleotide sequence database. Taken together, these two sections cover all the proteins characterized or inferred from all publicly available nucleotide sequences. The Plant Proteome Annotation Program (PPAP) of UniProtKB/Swiss-Prot focuses on the manual annotation of plant-specific proteins and protein families. Our major effort is currently directed towards the two model plants Arabidopsis thaliana and Oryza sativa. In UniProtKB/Swiss-Prot, redundancy is minimized by merging all data from different sources in a single entry. The proposed protein sequence is frequently modified after comparison with ESTs, full length transcripts or homologous proteins from other species. The information present in manually curated entries allows the reconstruction of all described isoforms. The annotation also includes proteomics data such as PTM and protein identification MS experimental results. UniProtKB and the other products of the UniProt consortium are accessible online at www.uniprot.org.

  3. UniFIeD Univariate Frequency-based Imputation for Time Series Data

    OpenAIRE

    Friese, Martina; Stork, Jörg; Ramos Guerra, Ricardo; Bartz-Beielstein, Thomas; Thaker, Soham; Flasch, Oliver; Zaefferer, Martin

    2013-01-01

    This paper introduces UniFIeD, a new data preprocessing method for time series. UniFIeD can cope with large intervals of missing data. A scalable test function generator, which allows the simulation of time series with different gap sizes, is presented additionally. An experimental study demonstrates that (i) UniFIeD shows a significant better performance than simple imputation methods and (ii) UniFIeD is able to handle situations, where advanced imputation methods fail. The results are indep...

  4. ¿Crisis en la Unión Europea?

    Directory of Open Access Journals (Sweden)

    Miguel Martínez

    2005-11-01

    Full Text Available El proceso de integración europeo por momentos ha avanzado a un ritmo muy rápido y en otros lo ha hecho lentamente o se ha estancado. Los acontecimientos internacionales y la nueva configuración del sistema internacional han obligado a la UE a empezar a jugar un papel importante en la escena internacional fuera del arco de influencia de Estados Unidos, pues a partir de la caída del Muro de Berlín hay intereses europeos que no coinciden con los norteamericanos. Es aquí donde ya es cada vez más difícil hacer coincidir intereses entre los miembros de la UE, hoy veinticinco y mañana veintisiete o veintinueve. La dificultad nace del hecho de que el mercado interior y la zona Euro, con todos sus defectos, son una realidad y los medios económicos para avanzar hacia una unión política ya parecen agotados y sólo cabe avanzar en materia de unión política, tarea mucho más complicada, pues los intereses en este campo no son tan convergentes como en el económico.

  5. La transparencia en la Unión Europea

    Directory of Open Access Journals (Sweden)

    Quirós Soro, Mario Francisco

    2012-12-01

    Full Text Available Este estudio versa sobre la formación histórica y vigencia del marco jurídico europeo, en materia de transparencia. Se centra en el derecho de la Unión Europea, por constituir un referente básico de los Estados miembros, en cuanto a la influencia en los ordenamientos jurídicos internos de los mismos. El estudio comprende los Tratados y el derecho derivado, junto a otros actos relacionados con la materia que nos ocupa, durante el periodo de vigencia de cada Tratado, con referencias a la jurisprudencia comunitaria. Además, los estudios sobre la Carta de los Derechos Fundamentales de la Unión Europea y los Códigos de Buena Conducta Administrativa, efectuados por separado, a efectos de mayor claridad expositiva. Un apartado describe los medios de acceso existentes en Internet, a los documentos de las instituciones comunitarias. Por otra parte, se estudia también la labor del Consejo de Europa en materia de transparencia.

  6. A plate-on-plate sandwiched Z-scheme heterojunction photocatalyst: BiOBr-Bi{sub 2}MoO{sub 6} with enhanced photocatalytic performance

    Energy Technology Data Exchange (ETDEWEB)

    Wang, Shengyao [College of Science, Huazhong Agricultural University, Wuhan 430070 (China); Key Laboratory of Environment Correlative Dietology, Ministry of Education, Wuhan 430070 (China); Yang, Xianglong; Zhang, Xuehao; Ding, Xing; Yang, Zixin [College of Science, Huazhong Agricultural University, Wuhan 430070 (China); Dai, Ke [College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070 (China); Chen, Hao, E-mail: hchenhao@mail.hzau.edu.cn [College of Science, Huazhong Agricultural University, Wuhan 430070 (China); Key Laboratory of Environment Correlative Dietology, Ministry of Education, Wuhan 430070 (China)

    2017-01-01

    Highlights: • A visible light heterojunction photocatalyst of BiOBr-Bi{sub 2}MoO{sub 6} was simply synthesized. • Carriers transferred efficiently in sandwiched layers causing an enhance activity. • A possible direct Z-scheme charge transfer mechanism of BiOBr-Bi2MoO6 is proposed. - Abstract: In this study, a direct Z-scheme heterojunction BiOBr-Bi{sub 2}MoO{sub 6} with greatly enhanced visible light photocatalytic performance was fabricated via a two-step coprecipitation method. It was indicated that a plate-on-plate heterojunctions be present between BiOBr and Bi{sub 2}MoO{sub 6} through different characterization techniques including X-ray powder diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), UV–vis diffuse reflectance spectroscopy (DRS) and photoelectrochemical measurements. The crystal structure and morphology analysis revealed that the heterointerface in BiOBr-Bi{sub 2}MoO{sub 6} occurred mainly on the (001) facets of BiOBr and (001) facets of Bi{sub 2}MoO{sub 6}. The photocatalytic activity of the BiOBr-Bi{sub 2}MoO{sub 6} was investigated by degradation of RhB and about 66.7% total organic carbon (TOC) could be removed. Ciprofloxacin (CIP) was employed to rule out the photosensitization. It was implied that the higher activity of BiOBr-Bi{sub 2}MoO{sub 6} could be attribute to the strong redox ability in the Z-scheme system, which was subsequently confirmed by photoluminescence spectroscopy (PL) and active spices trapping experiments. This study provides a promising platform for Z-scheme heterojunction constructing and also sheds light on highly efficient visible-light-driven photocatalysts designing.

  7. Ion exchange equilibrium for some uni-univalent and uni-divalent reaction systems using strongly basic anion exchange resin Duolite A-102 D

    Directory of Open Access Journals (Sweden)

    R.S. Lokhande

    2008-04-01

    Full Text Available The study on thermodynamics of ion exchange equilibrium for uni-univalent Cl-/I-, Cl-/Br-, and uni-divalent Cl-/SO42-, Cl-/C2O42- reaction systems was carried out using ion exchange resin Duolite A-102 D. The equilibrium constant K was calculated by taking into account the activity coefficient of ions both in solution as well as in the resin phase. The K values calculated for uni-univalent and uni-divalent anion exchange reaction systems was observed to increase with rise in temperature, indicating the endothermic exchange reactions having enthalpy values of 13.7, 38.0, 23.9, 22.9 kJ/mol, respectively.

  8. A Generalised Fault Protection Structure Proposed for Uni-grounded Low-Voltage AC Microgrids

    Science.gov (United States)

    Bui, Duong Minh; Chen, Shi-Lin; Lien, Keng-Yu; Jiang, Jheng-Lun

    2016-04-01

    This paper presents three main configurations of uni-grounded low-voltage AC microgrids. Transient situations of a uni-grounded low-voltage (LV) AC microgrid (MG) are simulated through various fault tests and operation transition tests between grid-connected and islanded modes. Based on transient simulation results, available fault protection methods are proposed for main and back-up protection of a uni-grounded AC microgrid. In addition, concept of a generalised fault protection structure of uni-grounded LVAC MGs is mentioned in the paper. As a result, main contributions of the paper are: (i) definition of different uni-grounded LVAC MG configurations; (ii) analysing transient responses of a uni-grounded LVAC microgrid through line-to-line faults, line-to-ground faults, three-phase faults and a microgrid operation transition test, (iii) proposing available fault protection methods for uni-grounded microgrids, such as: non-directional or directional overcurrent protection, under/over voltage protection, differential current protection, voltage-restrained overcurrent protection, and other fault protection principles not based on phase currents and voltages (e.g. total harmonic distortion detection of currents and voltages, using sequence components of current and voltage, 3I0 or 3V0 components), and (iv) developing a generalised fault protection structure with six individual protection zones to be suitable for different uni-grounded AC MG configurations.

  9. El autoempleo en los ciudadanos de la Unión Europea ampliada: heterogeneidad de los riesgos percibidos

    Directory of Open Access Journals (Sweden)

    Luis Miguel Zapico Aldeano

    2006-12-01

    Full Text Available La Unión Europea considera que la mejor manera de potenciar el crecimiento social y económico es fomentar las iniciativas emprendedoras pero, desafortunadamente, todavía hay muy pocos europeos estableciendo sus propios negocios. Por ello, el propósito de este estudio es relacionar el interés de los ciudadanos europeos en autoemplearse con los riesgos y barreras que perciben a la hora de enfrentarse a este proceso emprendedor. El análisis planteado cubre la totalidad de la Unión Europea de manera exploratoria, debido fundamentalmente a la falta de datos pasados de los 10 países nuevos miembros de la Unión. Los resultados muestran Ias grandes diferencias existentes entre los estados miembros y la necesidad de profundizar en la explicación de las dimensiones obtenidas. Desde un punto de vista práctico, se plantea que políticas de promoción de la actividad emprendedora se han de desarrollar fundamentalmente en los ámbitos estatal y regional.The European Union considers that the best way to boost the social and economic growth is to encourage entrepreneurial initiatives but, unfortunately, there are still very few Europeans setting up their own business. Therefore, the aim of this study is to relate the interest of Europeans citizens on being self-employed with the perceived risks and barriers to be faced up in this entrepreneurial process. The analysis covers the entire European Union, working on an exploratory base mainly due to the lack of past data about the ten new European Union Members States. The results show the great differences between the Member States and ask for a deep insight explaining the obtained dimensions. From a practical point of view, it is proposed that entrepreneurship promotion policies should be performed at the national and regional level.

  10. Bi209 alpha activity

    International Nuclear Information System (INIS)

    Araujo Penna, M.M. de.

    1970-01-01

    The study for measuring Bi 209 alpha activity is presented. Ilford L4 nuclear emulsion pellicles loaded with bismuth citrate to obtain a load of 100 mg/cm 3 of dry emulsion, were prepared. Other pellicles were prepared with the same. Ilford L4 gel to estimate the background radiation. To observe 'fading' effect, pellicles loaded with bismuth were submitted to neutrons of high energy, aiming to record recoil proton tracks. The pellicles were confined in nitrogen atmosphere at temperature lower than -10 0 C. The Bi 209 experimental half-life was obtained and compared with the estimated theoretical data. (M.C.K.) [pt

  11. State diagram of Pr-Bi system

    International Nuclear Information System (INIS)

    Abulkhaev, V.L.; Ganiev, I.N.

    1994-01-01

    By means of thermal differential analysis, X-ray and microstructural analysis the state diagram of Pr-Bi system was studied. Following intermetallic compounds were defined in the system: Pr 2 Bi, Pr 5 Bi 3 , Pr 4 Bi 3 , Pr Bi, PrBi 2 , Pr 2 Bi, Pr 5 Bi 3 , Pr 4 Bi 3 and PrBi 2 . The data analysis on Ln-Bi diagram allowed to determine the regularity of change of properties of intermetallic compounds in the line of rare earth elements of cerium subgroup.

  12. Global EiBI-monopole

    Directory of Open Access Journals (Sweden)

    JIN Xinghua

    2014-04-01

    Full Text Available A global EiBI-monopole problem is studied under EiBI gravitational theory.The equations of global EiBI-monopole are derived in the curved spacetime and the relation between the spacetime metric and auxiliary metric is found.In the case of a very small parameter,an asymptotic form of equations is given.The series solutions of global EiBI-monopole at infinity are found.

  13. 78 FR 4467 - UniStar Nuclear Energy, Combined License Application for Calvert Cliffs Power Plant, Unit 3...

    Science.gov (United States)

    2013-01-22

    ... NUCLEAR REGULATORY COMMISSION [Docket No. 52-016; NRC-2008-0250] UniStar Nuclear Energy, Combined License Application for Calvert Cliffs Power Plant, Unit 3, Exemption 1.0 Background UniStar Nuclear Energy (UNE), on behalf of Calvert Cliffs Nuclear Project, LLC and UniStar Nuclear Operating Services...

  14. 21 CFR 888.3535 - Knee joint femorotibial (uni-compartmental) metal/polymer porous-coated uncemented prosthesis.

    Science.gov (United States)

    2010-04-01

    ... 21 Food and Drugs 8 2010-04-01 2010-04-01 false Knee joint femorotibial (uni-compartmental) metal... Devices § 888.3535 Knee joint femorotibial (uni-compartmental) metal/polymer porous-coated uncemented prosthesis. (a) Identification. A knee joint femorotibial (uni-compartmental) metal/polymer porous-coated...

  15. Sorghum bi-color

    African Journals Online (AJOL)

    sunny

    2014-11-12

    Nov 12, 2014 ... Biomass materials require reduction and densification for the purpose of handling and space requirements. Guinea corn (Sorghum bi-color) is a major source of biomass material in the tropic regions. The densification process involves some ... a closed-end die, the temperature and the use of binder.

  16. bi tule

    Index Scriptorium Estoniae

    2004-01-01

    8.-18. IV 2004 Eesti Tarbekunsti- ja Disainimuuseumis Eesti Kunstiakadeemia keraamikaosakonna magistrantide grupinäitus "Läbi tule". Reeli Haamer, Kadri Kivi, Annika Vilippus, Ingrid Allik, Mathew Graziano ja Milvi Korela kaitsevad 12. IV oma magistritööd. 23. IV-15. VI näitus Leesi Ermi loomingust sarjas "Klassikud"

  17. Upregulation of matrix synthesis in chondrocyte-seeded agarose following sustained bi-axial cyclic loading

    Directory of Open Access Journals (Sweden)

    Belinda Pingguan-Murphy

    2012-08-01

    Full Text Available OBJECTIVES: The promotion of extracellular matrix synthesis by chondrocytes is a requisite part of an effective cartilage tissue engineering strategy. The aim of this in vitro study was to determine the effect of bi-axial cyclic mechanical loading on cell proliferation and the synthesis of glycosaminoglycans by chondrocytes in threedimensional cultures. METHOD: A strain comprising 10% direct compression and 1% compressive shear was applied to bovine chondrocytes seeded in an agarose gel during two 12-hour conditioning periods separated by a 12-hour resting period. RESULTS: The bi-axial-loaded chondrocytes demonstrated a significant increase in glycosaminoglycan synthesis compared with samples exposed to uni-axial or no loading over the same period (p<0.05. The use of a free-swelling recovery period prior to the loading regime resulted in additional glycosaminoglycan production and a significant increase in DNA content (p<0.05, indicating cell proliferation. CONCLUSIONS: These results demonstrate that the use of a bi-axial loading regime results in increased matrix production compared with uni-axial loading.

  18. Employer Branding

    OpenAIRE

    Stroblová, Zuzana

    2017-01-01

    The aim of the Master Thesis is to describe how to build Employer Brand a company. It is based on the description of Employer Branding project of a particular company and the evaluation its process. The thesis is a case study and consists of theoretical and practical part. The theoretical part focuses on trends and changes in leadership approach, definition of Employer Branding and HR Marketing. The practical part deals with the brand building process itself, describes the outputs of the proj...

  19. Employer branding

    OpenAIRE

    Mičková, Kateřina

    2008-01-01

    The demand for qualified employees is higher then the offering, both in Czech republic and internationally. Demand for specific skills, in addition to a greater demand for workforce generally, is making employee recruitment and retention much more difficult and expensive. Employer Branding claims to be an answer to this new challenge. This international concept focuses on developing an "employer brand" - mental image of a company as an employer. To achieve this, it is necessary to demonstrate...

  20. Employer Toolkit.

    Science.gov (United States)

    Thuli, Kelli J.; Hong, Esther

    This document consists of two guides intended for either employers or service providers involved in school to work partnerships for students with disabilities. "Tools for Service Providers" is intended to be used for training local-level providers who are developing school to work linkages with employers. Following an introduction, this…

  1. Fabrication and imaging study of ultrasound/fluorescence bi-modal contrast agent based on polymeric microbubbles

    International Nuclear Information System (INIS)

    Xing Zhanwen; Ke Hengte; Wang Jinrui; Zhao Bo; Qu Enze; Yue Xiuli; Dai Zhifei

    2013-01-01

    Objective: To fabricate an ultrasound/fluorescence bi-modal contrast agent by encapsulating fluorescent quantum dots into polymeric ultrasound contrast agent microbubbles. Methods: Polylactic acid (PLA, 500 mg), (1R)-(+)-camphor (50 mg) and CdSe/ZnS quantum dots (0.5 ml, 2.3 μmol/L)were dissolved or dispersed in dichloromethane (10 ml) to form in an organic phase. Ammonium carbonate solution and poly (vinyl alcohol) solution were employed as the internal and external water phase, respectively. The fluorescent microbubbles were generated using double emulsion solvent evaporation and lyophilization methods. The morphology and illumination were characterized by scanning electron microscopy (SEM) and fluorescence spectrophotometry. Synchronized contrast-enhanced ultrasound and fluorescence imaging was acquired by injecting fluorescent microbubbles into the silicone tube coupled to a self-made ultrasound/fluorescence imaging device. Ultrasound/fluorescence bi-modal in vivo imaging was acquired on the kidney of New Zealand rabbits and suckling mice. Results: The fluorescent microbubbles were hollow spheres with an averaged diameter of (1.62 ± 1.47) μm. More than 99% of these microbubbles were less than 8 μm in diameter, which met the size criteria for ultrasound contrast agents. The fluorescence emission peak of the microbubbles appeared at 632 nm, indicating that good luminescence properties of quantum dots were maintained. In vitro ultrasound/fluorescence imaging showed no echoic signal when the silicone tube was filled with saline, but there was a strong echo when filled with fluorescent microbubbles. The liquid column with fluorescent microbubbles emitted red luminescence under ultraviolet irradiation. The kidney of the rabbit was remarkably enhanced after the administration of fluorescent microbubbles. Bright fluorescence could be observed at the injection site of the suckling mice via subcutaneous injection. Conclusions: A bi-modal but single contrast agent

  2. Uni-directional transport properties of a serpent billiard

    International Nuclear Information System (INIS)

    Horvat, Martin; Prosen, Tomaz

    2004-01-01

    We present a dynamical analysis of a classical billiard chain-a channel with parallel semi-circular walls, which can serve as a model for a bent optical fibre. An interesting feature of this model is the fact that the phase space separates into two disjoint invariant components corresponding to the left and right uni-directional motions. Dynamics is decomposed into the jump map, a Poincare map between the two ends of a basic cell, and the time function, travelling time across a basic cell of a point on a surface of section. The jump map has a mixed phase space where the relative sizes of the regular and chaotic components depend on the width of the channel. For a suitable value of this parameter, we can have almost fully chaotic phase space. We have studied numerically the Lyapunov exponents, time auto-correlation functions and diffusion of particles along the chain. As a result of the singularity of the time function, we obtain marginally normal diffusion after we subtract the average drift. The last result is also supported by some analytical arguments

  3. Empirical Study on the Feasibility of UniSZA’s Staff Cash Waqf and its Possible Impact on Human Development in Terengganu

    Directory of Open Access Journals (Sweden)

    Yusuff Jelili Amuda

    2016-12-01

    Full Text Available There is a need for human development especially for the less privileged Muslims in the state due to financial constraints, unemployment, insufficient and inadequate financial support. The study discussed and analyzed the structured interviews conducted on factors influencing UniSZA’s staff cash waqf and its possible impact on the socio-economic development of Terengganu. The total number of 150 respondents participated in the first instrumental validation section where 150 questionnaires were distributed and collected. 150 questionnaires were distributed between February and June 2015 to the UniSZA’s staff such as lecturer, senior, and junior staff in the university. The instrument was divided into four sections. Firstly, the respondent’s profile, (15 items. Secondly, factors influencing UniSZA’s staff cash waqf contribution (15 items. Thirdly, promoting economic and human development (15 items. Fourthly, the importance to the society’s development (15 items. The content validity of the questionnaire would be evaluated by the researchers to improve the questionnaire. The participants were selected from lecturers, administrative staff, and students to discover the breadth and extent of the needs for UniZSA’s staff cash waqf contribution to the state. Waqf provides human relief, dignity, financial support, and social needs to reduce poverty in the society. The research is based on the hypothesis that UniSZA’s staff cash waqf can have a positive social and economic impact in Terengganu. The objective of this study is to examine the viability of a UniSZA staff cash waqf and how cash waqf can be utilized to develop Terengganu economically and socially for the interest of the needy Muslims in Terengganu. The study applies the quantitative and qualitative methods throughout the discussion and analysis. Human development includes the creation of employment, micro-finance, transaction, farming, soft loans, and other lawful lucrative

  4. Adaptación de dos piezas distintas a una pieza bi-materia

    OpenAIRE

    Gómez Acevedo, Rocío

    2014-01-01

    El presente proyecto se ha realizado en la empresa Faurecia Automotive Exteriors [Anexo-A], para la pieza llamada Spoiler del proyecto parachoques delantero A05GPPOLO del grupo Volkswagen (VW). Dicho proyecto se enfoca en la adaptación de dos piezas compuestas por polímeros diferentes en una única pieza bi-materia, utilizando la técnica de inyección multi-componente. Se ha partido de un estudio teórico previo sobre la posible compatibilidad entre la unión rígido-suave de los mater...

  5. Particle flow of ceramic breeder pebble beds in bi-axial compression experiments

    International Nuclear Information System (INIS)

    Hermsmeyer, S.; Reimann, J.

    2002-01-01

    Pebble beds of ceramic material are investigated within the framework of developing solid breeder blankets for future fusion power plants. A thermo-mechanical characterisation of such pebble beds is mandatory for understanding the behaviour of pebble beds, and thus the overall blanket, under fusion environment conditions. The mechanical behaviour of pebble beds is typically explored with uni-axial, bi-axial and tri-axial compression experiments. The latter two types of experiment are particularly revealing since they contain explicitly, beyond a compression behaviour of the bed, information on the conditions for pebble flow, i.e. macroscopic relocation, in the pebble bed. (orig.)

  6. Bi-Provincial Upgrader

    International Nuclear Information System (INIS)

    1997-01-01

    Husky Oil's Bi-Provincial Upgrader is located in the rural municipality of Wilton, east of Lloydminster, Saskatchewan. It is jointly owned by Husky Oil and the Saskatchewan government. The upgrader is designed to produce 7.300 m 3 /cd of synthetic crude from 8.440 m 3 /cd of diluted Lloyd blend and distillates from the existing Lloydminster refinery. The designed coke and sulphur production is 415 t/day and 240 t/day respectively. Chronology of the Bi-Provincial Upgrader project was presented, along with details of the heavy oil feedstock properties for Cold Lake, Lloydminster and Lloyd Blend. Upgrader production history since start-up, synthetic crude oil customers, and the evolution of prices for Edmonton light vs. Husky LLB at Hardisty were also reviewed. 3 tabs., 9 figs

  7. VIA Employability

    DEFF Research Database (Denmark)

    Andersen, Henrik Mariendal

    2017-01-01

    ’s realized at the entrance to the labor market and in the future career. The purpose is to find opportunities to improve employability-developing activities and to adapt it to specific needs from the students. Based on a number of qualitative interviews and personality tests of the graduates, an increased......The fact that students develop employability during their education is a key point for educational institutions and the focus on this issue has never been greater. This project looks into personal experience from VIA-graduates of "developing their employability" during the education and how it...

  8. Fast bi-directional prediction selection in H.264/MPEG-4 AVC temporal scalable video coding.

    Science.gov (United States)

    Lin, Hung-Chih; Hang, Hsueh-Ming; Peng, Wen-Hsiao

    2011-12-01

    In this paper, we propose a fast algorithm that efficiently selects the temporal prediction type for the dyadic hierarchical-B prediction structure in the H.264/MPEG-4 temporal scalable video coding (SVC). We make use of the strong correlations in prediction type inheritance to eliminate the superfluous computations for the bi-directional (BI) prediction in the finer partitions, 16×8/8×16/8×8 , by referring to the best temporal prediction type of 16 × 16. In addition, we carefully examine the relationship in motion bit-rate costs and distortions between the BI and the uni-directional temporal prediction types. As a result, we construct a set of adaptive thresholds to remove the unnecessary BI calculations. Moreover, for the block partitions smaller than 8 × 8, either the forward prediction (FW) or the backward prediction (BW) is skipped based upon the information of their 8 × 8 partitions. Hence, the proposed schemes can efficiently reduce the extensive computational burden in calculating the BI prediction. As compared to the JSVM 9.11 software, our method saves the encoding time from 48% to 67% for a large variety of test videos over a wide range of coding bit-rates and has only a minor coding performance loss. © 2011 IEEE

  9. UniNovo: a universal tool for de novo peptide sequencing.

    Science.gov (United States)

    Jeong, Kyowon; Kim, Sangtae; Pevzner, Pavel A

    2013-08-15

    Mass spectrometry (MS) instruments and experimental protocols are rapidly advancing, but de novo peptide sequencing algorithms to analyze tandem mass (MS/MS) spectra are lagging behind. Although existing de novo sequencing tools perform well on certain types of spectra [e.g. Collision Induced Dissociation (CID) spectra of tryptic peptides], their performance often deteriorates on other types of spectra, such as Electron Transfer Dissociation (ETD), Higher-energy Collisional Dissociation (HCD) spectra or spectra of non-tryptic digests. Thus, rather than developing a new algorithm for each type of spectra, we develop a universal de novo sequencing algorithm called UniNovo that works well for all types of spectra or even for spectral pairs (e.g. CID/ETD spectral pairs). UniNovo uses an improved scoring function that captures the dependences between different ion types, where such dependencies are learned automatically using a modified offset frequency function. The performance of UniNovo is compared with PepNovo+, PEAKS and pNovo using various types of spectra. The results show that the performance of UniNovo is superior to other tools for ETD spectra and superior or comparable with others for CID and HCD spectra. UniNovo also estimates the probability that each reported reconstruction is correct, using simple statistics that are readily obtained from a small training dataset. We demonstrate that the estimation is accurate for all tested types of spectra (including CID, HCD, ETD, CID/ETD and HCD/ETD spectra of trypsin, LysC or AspN digested peptides). UniNovo is implemented in JAVA and tested on Windows, Ubuntu and OS X machines. UniNovo is available at http://proteomics.ucsd.edu/Software/UniNovo.html along with the manual.

  10. Employment protection

    OpenAIRE

    Stefano Scarpetta

    2014-01-01

    Laws on hiring and firing are intended to protect workers from unfair behavior by employers, to counter imperfections in financial markets that limit workers’ ability to insure themselves against job loss, and to preserve firm-specific human capital. But by imposing costs on firms’ adaptation to changes in demand and technology, employment protection legislation may reduce not only job destruction but also job creation, hindering the efficient allocation of labor and productivity growth....

  11. UniPrimer: A Web-Based Primer Design Tool for Comparative Analyses of Primate Genomes

    Directory of Open Access Journals (Sweden)

    Nomin Batnyam

    2012-01-01

    Full Text Available Whole genome sequences of various primates have been released due to advanced DNA-sequencing technology. A combination of computational data mining and the polymerase chain reaction (PCR assay to validate the data is an excellent method for conducting comparative genomics. Thus, designing primers for PCR is an essential procedure for a comparative analysis of primate genomes. Here, we developed and introduced UniPrimer for use in those studies. UniPrimer is a web-based tool that designs PCR- and DNA-sequencing primers. It compares the sequences from six different primates (human, chimpanzee, gorilla, orangutan, gibbon, and rhesus macaque and designs primers on the conserved region across species. UniPrimer is linked to RepeatMasker, Primer3Plus, and OligoCalc softwares to produce primers with high accuracy and UCSC In-Silico PCR to confirm whether the designed primers work. To test the performance of UniPrimer, we designed primers on sample sequences using UniPrimer and manually designed primers for the same sequences. The comparison of the two processes showed that UniPrimer was more effective than manual work in terms of saving time and reducing errors.

  12. FAKTOR-FAKTOR PENGHAMBAT PENGERJAAN TUGAS AKHIR SKRIPSI MAHASISWA PENDIDIKAN TEKNIK OTOMOTIF FT UNY

    Directory of Open Access Journals (Sweden)

    Ibnu Siswanto

    2015-06-01

    Full Text Available Tujuan yang ingin dicapai dalam penelitian ini ialah mengetahui dan mendeskripsikan secara faktual, akurat dan sistematis tentang 1 Implementasi pedoman penulisan tugas akhir skripsi mahasiswa FT UNY di Jurusan PT. Otomotif dan 2 Faktor-faktor yang menjadi penghambat dalam pengerjaan tugas akhir skripsi mahasiswa PT. Otomotif FT UNY Penelitian ini menggunakan pendekatan deskriptif. Objek penelitian ialah Koordinator tugas akhir skripsi, dosen pembimbing, dan mahasiswa PT. Otomotif FT UNY. Pengumpulan data dilakukan dengan wawancara dan dokumentasi. Teknik analisis data yang dipergunakan ialah metode analisis deskriptif.  Hasil penelitian menunjukkan bahwa 1 Implementasi pedoman penulisan tugas akhir skripsi di jurusan PT. Otomotif FT UNY dilakukan dengan pembentukan koordinator tugas akhir skripsi, pembagian tahapan-tahapan pengerjaan skripsi yang terdiri dari pengajuan judul, bimbingan, pengambilan data penelitian, dan ujian TAS sampai dengan pengeluaran nilai TAS. Semua dosen PT. Otomotif FT UNY melaksanakan bimbingan tugas akhir skripsi sesuai dengan pedoman penulisan tugas akhir skripsi. Jurusan PT. Otomotif FT UNY juga melakukan bimbingan klasikal bagi mahasiswa yang akan/sedang mengerjakan tugas akhir skripsi, 2 Faktor-faktor yang menjadi penghambat dalam pengerjaan tugas akhir skripsi yaitu kesulitan dalam menemukan permasalahan yang akan diangkat menjadi judul penelitian, mahasiswa fokus mengerjakan proyek akhir (mahasiswa angkatan 2008 ke bawah, fokus laporan KKN PPL, mengulang banyak mata kuliah, tidak rutin bimbingan dengan dosen, kesulitan dalam menulis karya tulis ilmiah.

  13. Ga-Bi-Te system

    International Nuclear Information System (INIS)

    Rustamov, P.G.; Seidova, N.A.; Shakhbazov, M.G.; AN Azerbajdzhanskoj SSR, Baku. Inst. Neorganicheskoj i Fizicheskoj Khimii)

    1976-01-01

    To elucidate the nature of interaction in the system Ga-Bi-Te, a study has been made of sections GaTe-Bi 2 Te 3 , Ga 2 Te 3 -Bi, GaTe-Bi and Bi 2 Te 3 -Ga. The alloys have been prepared by direct melting of the components or their alloys with subsequent homogenizin.o annealing at 400 deg C. The study has been made by the methods of differential thermal, microstructural analysis and by microhardness measurements. On the basis of literature data and data obtained a projection of the liquidus surface of the phase diagram for the system Ga-Bi-Te has been constructed. In the ternary system there are 17 curves of monovariant equilibrium dividing the liquidus into 10 fields of primary crystallization of phases, 9 points of non-variant equilibrium of which 4 points are triple eutectics and 5 points are triple peritectics

  14. Employer Branding

    DEFF Research Database (Denmark)

    Frimann, Søren; Mønsted, Bolette Rye

    2012-01-01

    Employer branding er både for den private og den offentlige sektor blevet en måde, de kan imødekomme ændrede arbejdsmarkedsvilkår og organisatoriske udfordringer i en postmoderne og globaliseret verden. Den aktuelle finanskrise har skabt nye udfordringer for organisationer i deres bestræbelser på...... at tiltrække- og fastholde attraktive medarbejdere. Men hvilken betydning har det, når Grundfos siger ”Mennesket er i fokus”, og hvad siger ”mangfoldighed” om Københavns Kommune som arbejdsplads i relation til employer branding? Er der egentlig sammenhæng mellem tankerne bag employer branding og de eksternt...... kommunikerede employer brandprodukter. Eller bliver det unikke ved arbejdspladserne ersattet af buzzwords uden substans og inddragelse af ansatte og interessenter? Artiklen har til formål at vurdere disse spørgsmål på baggrund af analyser af to cases med employer branding....

  15. Investigations of bi-directional flow behaviour of a large vertical opening in containment

    International Nuclear Information System (INIS)

    Sharma, Pavan K.; Markandeya, S.G.; Ghosh, A.K.; Kushwaha, H.S.

    2002-01-01

    Full text: In the complex codes developed for fire analysis and for containment thermal hydraulic analysis. The junction in the multi-compartment geometries are often modeled as uni-directional junctions. However, certain large size junctions are known to depict bi-directional flow behaviour under specific circumstances. Detailed investigations have been carried out to understand the bi-directionality of a junction by analyzing an earlier reported case study of fire in an enclosure. A computer code FDS was used for the analysis. The paper presents the details of the analysis, the results obtained and further studies required to be conducted so that the findings can be applied to the fire/containment thermal hydraulics analysis codes successfully

  16. Student employment

    DEFF Research Database (Denmark)

    Jacob, Marita; Gerth, Maria; Weiss, Felix

    2018-01-01

    , according to social origins, in student employment from first-year students through graduating students. We show that inequality in job quality exists and is partly attributable to the need for students from lower social origins to work to finance their studies. We hypothesise that initial inequalities......In this article, we examine social origin differences in employment patterns across different stages of higher education and compare these differences between vocational and academic fields of study. Using data from a large-scale German student survey, we study the development of inequality...

  17. Bi-liquid foams

    International Nuclear Information System (INIS)

    Sonneville, Odile

    1997-01-01

    Concentrated emulsions have structures similar to foams; for this reason they are also called 'bi-liquid foams'. For oil in water emulsions, they are made of polyhedral oil cells separated by aqueous surfactant films. The limited stability of these Systems is a major nuisance in their applications. In this work, we tried to understand and to control the mechanisms through which bi-liquid foams can loose their stability. In a first stage, we characterized the states of surfactant films in bi-liquid foams submitted to different pressures. We determined their hydration, the surfactant density at interfaces as well as their thicknesses. The bi-liquid foams were made by concentrating hexadecane-in-water emulsions through centrifugation. The initial emulsions contained submicron oil droplets that were completely covered with surfactant. We measured the resistance of the films to dehydration, and we represented it by pressure-film thickness curves or pressure-film hydration curves. We also obtained evidence that the interfacial surfactant density increases when the film thickness is decreased (SDS case). The Newton Black Film state is the most dehydrated metastable state that can be reached. In this state, the films can be described as surfactant bilayers that only contain the hydration water of the surfactant polar heads. Two different processes are involved the destabilization of bi-liquid foams: Ostwald ripening (oil transfer from small cells to large cells) and coalescence (films rupture). The first mechanism can be controlled by choosing oils that are very insoluble in water, avoiding ethoxylated nonionic surfactants of low molecular weight, and making emulsions that are not too fine. The second mechanism is responsible for the catastrophic destabilization of bi-liquid foams made of droplets above one micron or with a low coverage in surfactant. In these cases, destabilization occurs in the early stages of concentration, when the films are still thick. It is caused

  18. The Employment-Crime Association for Individuals Convicted of a Sexual Offense in Their Youth

    NARCIS (Netherlands)

    van den Berg, C.J.W.; Mesters, Geert

    2017-01-01

    Objective We study the bi-directional relationship between employment and crime for individuals convicted for a sexual offense in their youth (JSO) and investigate the moderating influences of age and employment duration. Method A bi-variate dynamic binary choice model is developed to allow for

  19. Giant Rashba spin splitting in Bi2Se3: Tl

    KAUST Repository

    Singh, Nirpendra; Saeed, Yasir; Schwingenschlö gl, Udo

    2014-01-01

    First-principles calculations are employed to demonstrate a giant Rashba spin splitting in Bi2Se3:Tl. Biaxial tensile and compressive strain is used to tune the splitting by modifying the potential gradient. The band gap is found to increase under

  20. Northern employment

    International Nuclear Information System (INIS)

    Zavitz, J.

    1997-01-01

    Hiring practices and policies and employment opportunities that were available in the Beaufort Sea and MacKenzie Delta project for local residents and for people from southern Canada were dealt with in this chapter. Depending on the source, Northern hiring was a mere token, or a genuine and successful effort on the part of the companies to involve the native population and to share with them the benefits of the project. The fact remains that opening up job opportunities for Northerners was not easily attained, and would never have been realized without the involvement of government and community organizations. Government also played a major role in developing policies and training regimes. By the end of exploration operations, the hiring of Northern residents in the oil and gas industry had become a requirement of drilling applications. Training programs were also created to ensure that Northern residents received the means necessary to take advantage of Northern employment opportunities

  1. XPS study of U, UNi5, UCu5 and UNisub(0.5)Cusub(4.5)

    International Nuclear Information System (INIS)

    Grohs, H.; Hoechst, H.; Steiner, P.; Huefner, S.; Buschow, K.H.J.

    1980-01-01

    Core and valence band spectra of U metal and the intermetallic compounds UNi 5 , UCu 5 and UNisub(0.5)Cusub(4.5) have been measured by X-ray excited photoelectron spectroscopy (XPS). The data indicate that in UNi 5 the configuration is 5f 3 , and in UCu 5 and UNisub(0.5)Cusub(4.5) a mixed valence configuration with fewer 5f electrons than in UNi 5 is present. (author)

  2. Investigate Transient Behaviours and Select Appropriate Fault Protection Solutions of Uni-grounded AC Microgrids

    Directory of Open Access Journals (Sweden)

    Duong Minh Bui

    2016-03-01

    Full Text Available Transient situations of a uni-grounded low-voltage AC microgrid are simulated in this paper, which include different fault tests and operation transition test between the grid-connected and islanded modes of the uni-grounded microgrid. Based on transient simulation results, available fault protection methods are proposed for the main and back-up protection of a uni-grounded AC microgrid. Main contributions of this paper are (i analysing transient responses of a typically uni-grounded lowvoltage AC microgrid from line-to-line, single line-to-ground, three-phase faults and a microgrid operation transition test; and (ii proposing available fault protection methods for uni-grounded AC microgrids, such as non-directional/directional overcurrent protection solutions, under/over voltage protection solutions, differential protection, voltage-restrained overcurrent protection, and other protection principles not based on high fault currents (e.g. total harmonic distortion detection of phase currents and voltages, or protection methods using symmetrical sequence components of current and voltage.

  3. MetaUniDec: High-Throughput Deconvolution of Native Mass Spectra

    Science.gov (United States)

    Reid, Deseree J.; Diesing, Jessica M.; Miller, Matthew A.; Perry, Scott M.; Wales, Jessica A.; Montfort, William R.; Marty, Michael T.

    2018-04-01

    The expansion of native mass spectrometry (MS) methods for both academic and industrial applications has created a substantial need for analysis of large native MS datasets. Existing software tools are poorly suited for high-throughput deconvolution of native electrospray mass spectra from intact proteins and protein complexes. The UniDec Bayesian deconvolution algorithm is uniquely well suited for high-throughput analysis due to its speed and robustness but was previously tailored towards individual spectra. Here, we optimized UniDec for deconvolution, analysis, and visualization of large data sets. This new module, MetaUniDec, centers around a hierarchical data format 5 (HDF5) format for storing datasets that significantly improves speed, portability, and file size. It also includes code optimizations to improve speed and a new graphical user interface for visualization, interaction, and analysis of data. To demonstrate the utility of MetaUniDec, we applied the software to analyze automated collision voltage ramps with a small bacterial heme protein and large lipoprotein nanodiscs. Upon increasing collisional activation, bacterial heme-nitric oxide/oxygen binding (H-NOX) protein shows a discrete loss of bound heme, and nanodiscs show a continuous loss of lipids and charge. By using MetaUniDec to track changes in peak area or mass as a function of collision voltage, we explore the energetic profile of collisional activation in an ultra-high mass range Orbitrap mass spectrometer. [Figure not available: see fulltext.

  4. UniPrime2: a web service providing easier Universal Primer design.

    Science.gov (United States)

    Boutros, Robin; Stokes, Nicola; Bekaert, Michaël; Teeling, Emma C

    2009-07-01

    The UniPrime2 web server is a publicly available online resource which automatically designs large sets of universal primers when given a gene reference ID or Fasta sequence input by a user. UniPrime2 works by automatically retrieving and aligning homologous sequences from GenBank, identifying regions of conservation within the alignment, and generating suitable primers that can be used to amplify variable genomic regions. In essence, UniPrime2 is a suite of publicly available software packages (Blastn, T-Coffee, GramAlign, Primer3), which reduces the laborious process of primer design, by integrating these programs into a single software pipeline. Hence, UniPrime2 differs from previous primer design web services in that all steps are automated, linked, saved and phylogenetically delimited, only requiring a single user-defined gene reference ID or input sequence. We provide an overview of the web service and wet-laboratory validation of the primers generated. The system is freely accessible at: http://uniprime.batlab.eu. UniPrime2 is licenced under a Creative Commons Attribution Noncommercial-Share Alike 3.0 Licence.

  5. Finite element prediction on the chassis design of UniART4 racing car

    Science.gov (United States)

    Zaman, Z. I.; Basaruddin, K. S.; Basha, M. H.; Rahman, M. T. Abd; Daud, R.

    2017-09-01

    This paper presents the analysis and evaluation of the chassis design for University Automotive Racing Team No. 4 (UniART4) car based on finite element analysis. The existing UniART4 car chassis was measured and modelled geometrically using Solidwork before analysed in FEA software (ANSYS). Four types of static structural analysis were used to predict the chassis design capability under four different loading conditions; vertical bending, lateral bending, lateral torsion and horizontal lozenging. The results showed the chassis subjected to the highest stress and strain under horizontal lozenging, whereas the minimum stress and strain response was obtained under lateral bending. The present analysis result could provide valuable information in predicting the sustainability of the current UniART car chassis design.

  6. UNI C - A True Internet Pioneer, the Danish Computing Centre for Research and Education

    DEFF Research Database (Denmark)

    Olesen, Dorte

    2015-01-01

    that small computers could now be purchased for local use by the university departments whereas the need for high performance computing could only be satisfied by a joint national purchase and advanced network access to this central computer facility.The new center was named UNI-C and succeeded in helping...... Danish frontline research to use innovative computing techniques and have major breakthroughs using the first massively parallel computer architectures, but the greatest impact of UNI-C on Danish society was the successful early roll out of the Internet to universities with a follow-up of establishing...... the first Danish Internet service to ordinary PC users. This very first Internet service became a great success and helped to put Denmark on the international map as one of the very early Internet adopters. It also meant that UNI-C was tasked by the Ministry of Education with delivering a number...

  7. UniProtKB amid the turmoil of plant proteomics research

    Directory of Open Access Journals (Sweden)

    Michel eSchneider

    2012-12-01

    Full Text Available The UniProt knowledgebase (UniProtKB provides a single, centralized, authoritative resource for protein sequences and functional information. The majority of its records is based on automatic translation of coding sequences (CDS provided by submitters at the time of initial deposition to the nucleotide sequence databases (INSDC. More and more frequently, only the raw sequence of a complete genome is deposited to the nucleotide sequence databases and the gene model predictions and annotations are kept in separate, specialized model organism databases (MODs. In order to be able to provide the complete proteome of model organisms, UniProtKB had to implement pipelines for import of protein sequences from Ensembl and EnsemblGenomes.A single genome can be the target of several unrelated sequencing projects and the final assembly and gene model predictions may diverge quite significantly. In addition, several cultivars of the same species are often sequenced -1001 Arabidopsis cultivars are currently under way- and the resulting proteomes are far from being identical. Therefore, one challenge for UniProtKB is to store and organize these data in a convenient way and to clearly defined reference proteomes that should be made available to users. Manual annotation is one of the landmarks of the Swiss-Prot section of UniProtKB. Besides adding functional annotation, curators are checking, and often correcting, gene model predictions. For plants, this task is limited to Arabidopsis thaliana and Oryza sativa subsp japonica. Proteomics data providing experimental evidences confirming the existence of proteins or identifying sequence features such as post translational modifications are also imported into UniProtKB records and the knowledgebase is cross-referenced to numerous proteomics resources.

  8. Reestructuración del sistema bancario. La unión bancaria

    OpenAIRE

    Martín Cabrejas, Ana

    2015-01-01

    La unión bancaria es la respuesta principal de la Unión Europea a los problemas del sector financiero europeo derivados de la crisis económica internacional, fundamentalmente una situación de fragmentación financiera y de inestabilidad del euro. El proyecto iniciado en 2012, comprende una serie de cambios normativos y la implantación de un conjunto de instituciones que sirven a los objetivos de asegurar la estabilidad financiera de la Eurozona y de continuar el proceso de establecimiento de u...

  9. IntlUni - The Challenges of the Multilingual and Multicultural Learning Space in the International University

    DEFF Research Database (Denmark)

    Lauridsen, Karen M.

    IntlUni: The challenges of the multilingual and multicultural learning space in the international university The past decade has witnessed an unprecedented increase in the internationalisation of higher education. This means that more people in higher education than ever before are teaching...... education adds value – or has the potential to add value – to the programmes offered and the learning outcomes achieved by students, the overarching aim of IntlUni is to identify the quality criteria that characterize or should characterize teaching and learning in the multilingual and multicultural...

  10. Actividad de la Unión Europea en materia de lucha contra el tabaquismo

    Directory of Open Access Journals (Sweden)

    Antonio Calvete Oliva

    2005-01-01

    Full Text Available Este trabajo pretende ofrecer información respecto a las disposiciones adoptadas por la Unión Europea, tanto obligatorias como no obligatorias para sus Estados miembros, que de una u otra forma se relacionen con la lucha contra el tabaquismo. Para ello se hará una revisión de todas las que se han publicado en el Diario Oficial de la Unión Europea desde la primera en el año 1986 hasta marzo de 2005, comentando los aspectos de cada una que tengan que ver con lo enunciado en el título.

  11. Conceptual design report for the UNI-CAT beam line proposal

    International Nuclear Information System (INIS)

    Budai, J.D.; Ice, G.E.; Sparks, C.J.; Zschack, P.; Chen, H.; Chiang, T.C.; Nelson, M.C.; Salamon, M.B.; Simmons, R.O.; Robota, H.

    1992-08-01

    The overall thrusts of UNI-CAT (University-National Laboratory- Industry Collaborative Access Team) are research at the cutting edge of physics, chemistry, biology, materials science, chemical engineering, polymer science, and geology; and education of a new generation of scientists in the use of synchrotron radiation to probe the structure, chemistry, and dynamic behavior of materials. The UNI-CAT proposal is to develop an APS sector that includes a bending magnet beam line and an insertion device beam line. The APS type-A undulator is the preferred choice for the insertion device. 8 figs, 6 refs

  12. Spatial profile of thermoelectric effects during Peltier pulsing in Bi and Bi/MnBi eutectic

    Science.gov (United States)

    Silberstein, R. P.; Larson, D. J., Jr.

    1987-01-01

    The spatial profile of the thermal transients that occur during and following the current pulsing associated with Peltier Interface Demarcation during directional solidification is studied. Results for pure Bi are presented in detail and compared with corresponding results for the Bi/MnBi eutectic. Significant thermal transients occur throughout the sample that can be accounted for by the Peltier effect, the Thomson effect, and Joule heating. These effects are separated and their behavior is studied as a function of time, current density, and position with respect to the solid/liquid interface.

  13. CULTIVAR RELEASE - BRSMG União: common bean cultivar with jalo grain for the state of Minas Gerais

    Directory of Open Access Journals (Sweden)

    Magno Antonio Patto Ramalho

    2012-12-01

    Full Text Available The bean cultivar BRSMG União as a new option of a bean cultivar with jalo grains for the state of Minas Gerais. The cultivar BRSMG União had an average grain yield of 9.8% above the mean of the controls (Jalo EEP 558 and BRS Radiante and was resistant to powdery-mildew.

  14. 76 FR 81994 - UniStar Nuclear Energy; Combined License Application for Calvert Cliffs Nuclear Power Plant, Unit...

    Science.gov (United States)

    2011-12-29

    ... NUCLEAR REGULATORY COMMISSION [Docket No. 52-016; NRC-2008-0250] UniStar Nuclear Energy; Combined License Application for Calvert Cliffs Nuclear Power Plant, Unit 3; Exemption 1.0 Background: UniStar Nuclear Energy (UNE) submitted to the U.S. Nuclear Regulatory Commission (NRC or the Commission ) a...

  15. Los jueces españoles como jueces de la Unión Europea

    DEFF Research Database (Denmark)

    Mayoral, Juan A.; Ordóñez Solís, David; Berberoff, Dimitry

    2013-01-01

    sentido, el presente estudio trata de esclarecer si actualmente los jueces españoles se han adaptado a las exigencias creadas por el sistema legal de la Unión para la aplicación del derecho europeo. Para comprobar si los jueces españoles han asimilado su condición de jueces europeos, operando como...

  16. Uni-directional waves over slowly varying bottom, part II: Deformation of travelling waves

    NARCIS (Netherlands)

    Pudjaprasetya, S.R.; Pudjaprasetya, S.R.; van Groesen, Embrecht W.C.

    1996-01-01

    A new Korteweg-de Vries type of equation for uni-directional waves over slowly varying bottom has been derived in Part I. The equation retains the Hamiltonian structure of the underlying complete set of equations for surface waves. For flat bottom it reduces to the standard Korteweg-de Vries

  17. Infrastructure for the life sciences: design and implementation of the UniProt website.

    Science.gov (United States)

    Jain, Eric; Bairoch, Amos; Duvaud, Severine; Phan, Isabelle; Redaschi, Nicole; Suzek, Baris E; Martin, Maria J; McGarvey, Peter; Gasteiger, Elisabeth

    2009-05-08

    The UniProt consortium was formed in 2002 by groups from the Swiss Institute of Bioinformatics (SIB), the European Bioinformatics Institute (EBI) and the Protein Information Resource (PIR) at Georgetown University, and soon afterwards the website http://www.uniprot.org was set up as a central entry point to UniProt resources. Requests to this address were redirected to one of the three organisations' websites. While these sites shared a set of static pages with general information about UniProt, their pages for searching and viewing data were different. To provide users with a consistent view and to cut the cost of maintaining three separate sites, the consortium decided to develop a common website for UniProt. Following several years of intense development and a year of public beta testing, the http://www.uniprot.org domain was switched to the newly developed site described in this paper in July 2008. The UniProt consortium is the main provider of protein sequence and annotation data for much of the life sciences community. The http://www.uniprot.org website is the primary access point to this data and to documentation and basic tools for the data. These tools include full text and field-based text search, similarity search, multiple sequence alignment, batch retrieval and database identifier mapping. This paper discusses the design and implementation of the new website, which was released in July 2008, and shows how it improves data access for users with different levels of experience, as well as to machines for programmatic access.http://www.uniprot.org/ is open for both academic and commercial use. The site was built with open source tools and libraries. Feedback is very welcome and should be sent to help@uniprot.org. The new UniProt website makes accessing and understanding UniProt easier than ever. The two main lessons learned are that getting the basics right for such a data provider website has huge benefits, but is not trivial and easy to underestimate

  18. Infrastructure for the life sciences: design and implementation of the UniProt website

    Directory of Open Access Journals (Sweden)

    Suzek Baris E

    2009-05-01

    Full Text Available Abstract Background The UniProt consortium was formed in 2002 by groups from the Swiss Institute of Bioinformatics (SIB, the European Bioinformatics Institute (EBI and the Protein Information Resource (PIR at Georgetown University, and soon afterwards the website http://www.uniprot.org was set up as a central entry point to UniProt resources. Requests to this address were redirected to one of the three organisations' websites. While these sites shared a set of static pages with general information about UniProt, their pages for searching and viewing data were different. To provide users with a consistent view and to cut the cost of maintaining three separate sites, the consortium decided to develop a common website for UniProt. Following several years of intense development and a year of public beta testing, the http://www.uniprot.org domain was switched to the newly developed site described in this paper in July 2008. Description The UniProt consortium is the main provider of protein sequence and annotation data for much of the life sciences community. The http://www.uniprot.org website is the primary access point to this data and to documentation and basic tools for the data. These tools include full text and field-based text search, similarity search, multiple sequence alignment, batch retrieval and database identifier mapping. This paper discusses the design and implementation of the new website, which was released in July 2008, and shows how it improves data access for users with different levels of experience, as well as to machines for programmatic access. http://www.uniprot.org/ is open for both academic and commercial use. The site was built with open source tools and libraries. Feedback is very welcome and should be sent to help@uniprot.org. Conclusion The new UniProt website makes accessing and understanding UniProt easier than ever. The two main lessons learned are that getting the basics right for such a data provider website has

  19. Explaining the Behavioral Intention towards BI Implementation in Public Administrations - A Principal-Agent Theory Approach

    Science.gov (United States)

    Becker, Jörg; Bergener, Philipp; Lis, Łukasz; Niehaves, Björn

    Business Intelligence (BI) is an established instrument to support public administrations in their management tasks by increasing their information level. BI is of special interest in the context of introducing accrual accounting in public administrations as this affects the information level of different stakeholders, leading to a possible decrease for municipal councils. The principal-agent theory can help to explain different behavioral intentions of the stakeholders concerning the introduction of BI. We employ a single qualitative case study to analyze these behavioral intentions. It shows that the introduction of accrual accounting did decrease the information level of the municipal council making the principal-agent problems possible. Furthermore, it shows that BI might be a solution for this problem. Therefore, council members show the behavioral intention to support the BI implementation while administration staff members rather resist it. Based on these finding, we discuss implications for practice and future research.

  20. Multiferroic BiFeO3-BiMnO3 Nanocheckerboard From First Principles

    OpenAIRE

    Palova, L.; Chandra, P.; Rabe, K. M.

    2010-01-01

    We present a first principles study of an unusual heterostructure, an atomic-scale checkerboard of BiFeO3-BiMnO3, and compare its properties to the two bulk constituent materials, BiFeO3 and BiMnO3. The "nanocheckerboard" is found to have a multiferroic ground state with the desired properties of each constituent: polar and ferrimagnetic due to BiFeO3 and BiMnO3, respectively. The effect of B-site cation ordering on magnetic ordering in the BiFeO3-BiMnO3 system is studied. The checkerboard ge...

  1. Integrated Bi2O3 nanostructure modified with Au nanoparticles for enhanced photocatalytic activity under visible light irradiation

    Directory of Open Access Journals (Sweden)

    Hankwon Lim

    2017-06-01

    Full Text Available An integrated Bi2O3 (i-Bi2O3 nanostructure with a particle size 10 nm inducing agglomerated structure were synthesized by dissolving bismuth nitrate pentahydrate in diethylene glycol at 180 °C with post heat treatment. The prepared i-Bi2O3 nanostructures were employed for the construction of Au/i-Bi2O3 composite system and characterized by X-ray diffraction pattern, UV–visible diffuse reflectance spectroscopy (DRS, and transmission electron microscopy, X-ray photoemission spectroscopy (XPS and Energy dispersive X-ray spectroscopy (EDS. The i-Bi2O3 nanostructure and Au/i-Bi2O3 composite system were found to exhibit high photocatalytic activity than commercial Bi2O3 in decomposing salicylic acid under visible light irradiation. The high catalytic activity of i-Bi2O3 nanostructure was deduced to be caused by charge separation facilitated by electron hopping between the particles within the integrated structure and space-charge separation between i-Bi2O3 and Au. The charge separation behavior in i-Bi2O3 nanostructure was further bolstered by comparing the measured. OH radical produced in the solution with i-Bi2O3 nanostructure, commercial Bi2O3 and Au/i-Bi2O3 composite which readily react with 1,4-terephthalic acid (TA inducing 2-hydroxy terephthalic acid (TAOH that shows unique fluorescence peak at 426 nm. The space-charge separation between i-Bi2O3 and Au was confirmed by measuring the electron spin resonance (ESR spectra.

  2. Investigations of bi-directional flow behaviour in presence of a large vertical opening in a fire compartment

    International Nuclear Information System (INIS)

    Sharma, Pavan K.; Gera, B.

    2011-01-01

    In the complex thermal hydraulics codes developed for fire, reactor and containment safety the junctions in the multi-compartment geometries are often modeled as uni-directional junctions and some construct of flow coefficient. However, certain large size junctions are known to depict bi-directional flow behaviour under specific circumstances. The CFD based computer code FDS was used for an earlier reported study of fire in an enclosure on the bidirectional flow behaviour in present of a wall opening. Numerical simulation is directed to monitor the entrainment of the fresh air from outside to the fire compartment and resulting plume deflection due to presence of a big opening. The paper presents the details of the analysis, the results obtained, and comparison with the reported experimental data in terms of plume deflection, entrainment. Detailed investigations have been carried out to understand the bi-directionality of a junction by analyzing studying the outgoing hot air flow and incoming cold air. (orig.)

  3. Microstructure Of MnBi/Bi Eutectic Alloy

    Science.gov (United States)

    Wilcox, William R.; Eisa, G. F.; Baskaran, B.; Richardson, Donald C.

    1988-01-01

    Collection of three reports describes studies of directional solidification of MnBi/Bi eutectic alloy. Two of the reports, "Influence of Convection on Lamellar Spacing of Eutectics" and "Influence of Convection on Eutectic Microstructure," establish theoretical foundation for remaining document. Reports seek to quantify effect of convection on concentration field of growing lamellar eutectic. Remaining report, "Study of Eutectic Formation," begins by continuing theoretical developments. New technique under development by one of the authors helps to reveal three-dimensional microstructures of alloys.

  4. The big five factors and faking behaviors in employment interviews

    OpenAIRE

    Nguyen, Phuong Thi Bang; Thomassen, Malene

    2017-01-01

    Masteroppgave(MSc) in Master of Science in Leadership and Organizational Psychology - Handelshøyskolen BI, 2017 Research shows how it is not unusual for job applicants to fake during employment interviews. Faking can deteriorate the quality of the interview result, and lead to wrong hiring decisions. According to the model of faking likelihood in the employment interview, capability, willingness and opportunity to fake influence the extent to which faking happens in employment ...

  5. Resilient Prosumer Scenario in a Changing Regulatory Environment—The UniRCon Solution

    Directory of Open Access Journals (Sweden)

    Mihai Sanduleac

    2017-11-01

    Full Text Available Technological developments are pushing for new solutions based upon massive integration of renewable electricity generation in networks already facing many challenges. This paper presents a novel approach to managing the energy transfer towards prosumers making use of smart management of local energy storage. The proposed design (including storage dimensioning is based on several operating scenarios in which the prosumer might operate as: (i a “load only” entity (from a grid perspective, thus exhibiting investment resiliency against regulatory changes and high energy efficiency; or (ii a prosumer, in case regulatory opportunistic profit might be available. This can be realized within a newly proposed Uni-directional Resilient Consumer (UniRCon architecture. The major aim of the proposed architecture is to achieve optimal self-consumption while avoiding curtailment even in a changing regulatory environment like, for example, the total lack of incentives for generation based on renewable energy sources (RES. One of the major advantages of the proposed architecture consists in the adaptability to changes in the regulatory and market environment. The term resilience is used with multiple meanings: (a the prosumer’s financial resilience against regulatory changes when investment calculations assume no-grid injections; (b the prosumer’s technical resilience, with electrical design based on standalone operation; (c the resilience of clusters of interconnected end-user installations with enabled community-level electricity exchange, independent of the existing main grid supply; (d the contribution to grid resilience, by enabling AC microgrid (MG operation in island mode when large portions of the grid are formed by clusters of UniRCon prosumers (the ease of islanding segmentation of the local grid in case of emergencies. For proof of concept, three use-cases are detailed: (i photovoltaic (PV installations connected behind the meter; (ii PV and

  6. La armonización contable y de la auditoría en la unión europea

    OpenAIRE

    Barrantes Barrantes, Antonio

    2011-01-01

    Este articulo ilustra la situación de las profesiones contable y auditora en la Unión Europea Se parte de una breve historia de la gestación de la Unión Europea, continuando con los órganos rectores y los medios documentales-jurídicos con los que se instrumenta su organización. Se muestra seguidamente cómo se encuentran institucionalizadas la profesión contable y la auditoria en los países de la Unión y se analizan las causas que originan diferencias de criterios y usos contables en dichos pa...

  7. Robust assignment of cancer subtypes from expression data using a uni-variate gene expression average as classifier

    International Nuclear Information System (INIS)

    Lauss, Martin; Frigyesi, Attila; Ryden, Tobias; Höglund, Mattias

    2010-01-01

    Genome wide gene expression data is a rich source for the identification of gene signatures suitable for clinical purposes and a number of statistical algorithms have been described for both identification and evaluation of such signatures. Some employed algorithms are fairly complex and hence sensitive to over-fitting whereas others are more simple and straight forward. Here we present a new type of simple algorithm based on ROC analysis and the use of metagenes that we believe will be a good complement to existing algorithms. The basis for the proposed approach is the use of metagenes, instead of collections of individual genes, and a feature selection using AUC values obtained by ROC analysis. Each gene in a data set is assigned an AUC value relative to the tumor class under investigation and the genes are ranked according to these values. Metagenes are then formed by calculating the mean expression level for an increasing number of ranked genes, and the metagene expression value that optimally discriminates tumor classes in the training set is used for classification of new samples. The performance of the metagene is then evaluated using LOOCV and balanced accuracies. We show that the simple uni-variate gene expression average algorithm performs as well as several alternative algorithms such as discriminant analysis and the more complex approaches such as SVM and neural networks. The R package rocc is freely available at http://cran.r-project.org/web/packages/rocc/index.html

  8. Immobilization of Cellulase from Bacillus subtilis UniMAP-KB01 on Multi-walled Carbon Nanotubes for Biofuel Production

    Science.gov (United States)

    Naresh, Sandrasekaran; Hoong Shuit, Siew; Kunasundari, Balakrishnan; Hoo Peng, Yong; Qi, Hwa Ng; Teoh, Yi Peng

    2018-03-01

    Bacillus subtilis UniMAP-KB01, a cellulase producer was isolated from Malaysian mangrove soil. Through morphological identification it was observed that the B. subtilis appears to be in rod shaped and identified as a gram positive bacterium. Growth profile of isolated B. subtilis was established by measuring optical density (OD) at 600 nm for every 1 hour intervals. Polymath software was employed to plot the growth profile and the non-linear plot established gave the precision value of linear regression, R2 of 0.9602, root mean square deviation (RMSD) of 0.0176 and variance of 0.0025. The hydrolysis capacity testing revealed the cellulolytic index of 2.83 ± 0.46 after stained with Gram’s Iodine. The harvested crude enzyme after 24 hours incubation in carboxymethylcellulose (CMC) broth at 45°C and 100 RPM, was tested for enzyme activity. Through Filter Paper Assay (FPA), the cellulase activity was calculated to be 0.05 U/mL. The hydrolysis capacity testing and FPA shown an acceptable value for thermophilic bacterial enzyme activity. Thus, this isolated strain reasoned to be potential for producing thermostable cellulase which will be immobilized onto multi-walled carbon nanotubes and the cellulolytic activity will be characterized for biofuel production.

  9. Território e Rede da União do Vegetal

    OpenAIRE

    Morales Arteaga, Pamela Elizabeth

    2016-01-01

    Esta pesquisa trata do território e das redes geográficas da religião ayahusaqueira União do Vegetal, em Brasília. Busca-se interpretar os objetivos da pesquisa que foram; a construção do território da União do Vegetal, diferençando elementos relevantes do território; debatendo a hierarquização do grupo na sua atuação territorial e relacionando as percepções dos adeptos com suas práticas territoriais em rede. As hipóteses que nortearam o trabalho foram; A construção do território sagrado da U...

  10. Uni-directional trail sharing by two species of ants a Monte Carlo study

    International Nuclear Information System (INIS)

    Kunduraci, T; Kayacan, O

    2015-01-01

    We study insect traffic, specifically ant traffic on a uni-directional trail which is shared by two species of ants, one of which is ‘good’ at smelling and the other ‘poor’. The two distinct species of ants are placed mixed on the same trail and individuals of both are permitted to make a U-turn when they encounter another ant in front of them. The theoretical scheme for the ant traffic is based on an asymmetric simple exclusion model. The ant traffic on the uni-directional trail is studied as a function of the number of ‘good-smelling’ ants and the evaporation probability of pheromones by keeping the number of ‘poor-smelling ants’ constant during Monte Carlo simulations. (paper)

  11. IntlUni - The Challenges of the Multilingual and Multicultural Learning Space in the International University

    DEFF Research Database (Denmark)

    Lauridsen, Karen M.

    learning space, and to develop recommendations for how higher education institutions may implement and ensure the sustainability of quality teaching and learning in this space. IntlUni is a three-year Erasmus Academic Network (2012-2015) and has received financial support from the European Commission......IntlUni: The challenges of the multilingual and multicultural learning space in the international university The past decade has witnessed an unprecedented increase in the internationalisation of higher education. This means that more people in higher education than ever before are teaching...... and learning through the medium of a language other than their own first languages. What are the implication of this for lecturers and students? And what are the implications for this for the quality of European higher education programmes? Taking it for granted that the internationalisation of higher...

  12. Movilidad y desigualdad regional en la Unión Europea

    Directory of Open Access Journals (Sweden)

    Roberto Ezcurra

    2003-01-01

    Full Text Available El objetivo de este trabajo es analizar la movilidad de la distribución de la renta por habitante a escala regional en la Unión Europea durante el período 1977-1996, con el fin de aportar elementos complementarios sobre la naturaleza de la desigualdad interregional. Para ello se utiliza una metodología novedosa basada en el cálculo de una serie de indicadores empleados habitualmente en el estudio dinámico de la distribución interpersonal de la renta. Los resultados obtenidos sugieren que el nivel de movilidad intradistribucional es relativamente bajo. Asimismo, la evidencia empírica aportada muestra la existencia de una tendencia hacia la reducción de la movilidad regional a lo largo del período analizado que ha coincidido en el tiempo con el mantenimiento de la desigualdad interregional en la Unión Europea.

  13. UniFlex A WWW-environment for project-based collaborative learning

    DEFF Research Database (Denmark)

    Borch, Ole; Helbo, Jan; Knudsen, Morten

    2003-01-01

    technical maintenance. Web interfaces for all type of users are developed to ease information and document upload, user administration and more. The product is used at Aalborg University open distance education for "Master of Industrial Information technology" (MII) and "Master in Mobile Information......Increasing demands for remote on-line education are changing the way teaching and learning is performed. New behavior in using pedagogy and supporting technology is needed to drive the learning process. To facilitate the use of services for selected activities to participants in on-line education......, a web site named UniFlex (University Flexible learning) has been developed and brought into use. The site is a comprehensive set of bookmarks including course taking, upload/download, and - of special significance - collaborative on-line project work. UniFlex has been developed to meet the requirement...

  14. Experiments of condensation-induced water hammers at the UniBw Munich

    International Nuclear Information System (INIS)

    Dirndorfer, Stefan; Kulisch, Helmut; Malcherek, Andreas

    2013-01-01

    Condensation-induced water hammers belong to the most serious and complex pressure surges. Experimental data from literature are scanty, incomplete, not public or simply missing. A new test facility at the UniBw (University of the German Armed Forces) was constructed to perform own experiments within a research alliance. This new test facility uses a complete new approach. In contrast to other test stations, the UniBw water hammer test facility is a closed system. This leads on the one hand to a more complex handling with respect of conducting experiments but on the other hand also to a more realistic characterization of thermo-hydraulic phenomena which can occur in a power plant. The first results of a measured condensation-induced water hammer are presented. (orig.)

  15. Experiments of condensation-induced water hammers at the UniBw Munich

    Energy Technology Data Exchange (ETDEWEB)

    Dirndorfer, Stefan; Kulisch, Helmut; Malcherek, Andreas [Universitaet der Bundeswehr Muenchen, Neubiberg (Germany). Hydromechanik und Wasserbau

    2013-03-15

    Condensation-induced water hammers belong to the most serious and complex pressure surges. Experimental data from literature are scanty, incomplete, not public or simply missing. A new test facility at the UniBw (University of the German Armed Forces) was constructed to perform own experiments within a research alliance. This new test facility uses a complete new approach. In contrast to other test stations, the UniBw water hammer test facility is a closed system. This leads on the one hand to a more complex handling with respect of conducting experiments but on the other hand also to a more realistic characterization of thermo-hydraulic phenomena which can occur in a power plant. The first results of a measured condensation-induced water hammer are presented. (orig.)

  16. Komentar terhadap undang-undang badan hukum pendidikan dan kesiapan UNY menjadi badan hukum pendidikan

    Directory of Open Access Journals (Sweden)

    Anang Priyanto

    2009-06-01

    Full Text Available Pro and contra responses arises release of Act of Legal Body of Education (BHP. The emergence of the forementioned Act is mandate of Act of System of National Education. The articles of Act response completelY the objections of the opposing parties against this Act. They should prosecute it through constitutional review in Court of Constitution/ Mahkamah Konstitusi  (MK. They should prove the fundamental weaknesses of its content.  If UNY is reacfy to change its legal body into BHP, whole aspect of its management and conduct should be adjusted to the provisions og the Act. UNY has already tried to anticipate the regulation through preparing the statute of Universiry.

  17. Photocatalytic removal of tetrabromobisphenol A by magnetically separable flower-like BiOBr/BiOI/Fe{sub 3}O{sub 4} hybrid nanocomposites under visible-light irradiation

    Energy Technology Data Exchange (ETDEWEB)

    Gao, Shengwang [Department of Chemistry, College of Science, North University of China, Taiyuan 030051 (China); State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012 (China); Guo, Changsheng; Hou, Song; Wan, Li [State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012 (China); Wang, Qiang [Heilongjiang Research Academy of Environmental Sciences, Harbin 150056 (China); Lv, Jiapei; Zhang, Yuan [State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012 (China); Gao, Jianfeng [Department of Chemistry, College of Science, North University of China, Taiyuan 030051 (China); Meng, Wei [State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012 (China); Xu, Jian, E-mail: xujian@craes.org.cn [State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012 (China)

    2017-06-05

    Highlights: • A novel BiOBr/BiOI/Fe{sub 3}O{sub 4} hybrid nanocomposites was prepared for the first time. • BiOBr-BiOI-Fe{sub 3}O{sub 4} (2:2:0.5) displays superior photocatalytic activity for TBBPA. • Good magnetic property makes it easy for the material’s recovery from solution. • The photocatalytic reaction mechanism of BiOBr/BiOI/Fe{sub 3}O{sub 4} was proposed. • Superoxide radical is the dominant ROS in TBBPA degradation. - Abstract: A novel flower-like three-dimensional BiOBr/BiOI/Fe{sub 3}O{sub 4} heterojunction photocatalyst was synthesized using a simple in situ co-precipitation method at room temperature. The hybrid composites were characterized by a couple of techniques including X-ray powder diffraction, scanning electron microscope, transmission electron microscopy, ultraviolet-visible diffuse reflection spectroscopy, Brunauer-Emmett-Teller, X-ray photo-electron spectroscopy, photoluminescence technique, and vibrating sample magnetometer. Fe{sub 3}O{sub 4} nanoparticles were perfectly loaded on the surface of BiOBr/BiOI microspheres. The recyclable magnetic BiOBr/BiOI/Fe{sub 3}O{sub 4} was employed to degrade TBBPA under visible light irradiation. The optimal removal efficiency of the ternary BiOBr/BiOI/Fe{sub 3}O{sub 4} (2:2:0.5) nanocomposite reached up to 98.5% for TBBPA in aqueous solution. The superior photocatalytic activity of BiOBr/BiOI/Fe{sub 3}O{sub 4} was mainly ascribed to large surface area and appropriate energy gaps, resulting in the effective adsorption and separation of electrons-hole pairs. The photogenerated reactive species determined by free radicals trapping experiments revealed that the excellent catalytic activity was primarily driven by ·O{sub 2}{sup −} radical. The photocatalytic degradation kinetics and a detailed mechanism were also proposed. Result demonstrated that the BiOBr/BiOI/Fe{sub 3}O{sub 4} can be magnetically recycled, and maintain high photocatalytic activity after reuse over five cycles. It

  18. Magnetic phase diagram of UNi2Si2 under magnetic field and high-pressure

    International Nuclear Information System (INIS)

    Honda, F.; Oomi, G.; Svoboda, P.; Syshchenko, A.; Sechovsky, V.; Khmelevski, S.; Divis, M.; Andreev, A.V.; Takeshita, N.; Mori, N.; Menovsky, A.A.

    2001-01-01

    Measurements of electrical resistance under high pressure and neutron diffraction in high-magnetic field of single crystalline UNi 2 Si 2 have been performed. We have found the analogy between the p-T and B-T magnetic phase diagrams. It is also found that the propagation vector q Z of incommensurate antiferromagnetic phase decreases with increasing magnetic field. A new pronounced pressure-induced incommensurate-commensurate magnetic phase transition has been detected

  19. Rumanía, una agricultura con peso en la Unión Europea

    OpenAIRE

    Hernández Díaz-Ambrona, Carlos Gregorio; Gliga, Adrian

    2012-01-01

    El aspecto más conocido de la agricultura rumana en la actualidad es que el todopoderoso comisario de agricultura de la Unión Europea, Dacian Ciolos, es rumano. Tras el colapso del comunismo en 1989, empezó a desarrollarse la agricultura tal como la conocemos hoy en Rumanía. Se ha producido un giro al sistema capitalista, pero manteniendo en gran parte la estructura agraria heredada del comunismo.

  20. The modulation and reconstruction of a BiO layer of cuprate Bi2212

    International Nuclear Information System (INIS)

    Fan Wei; Zeng, Z

    2011-01-01

    Studies based on ab initio density functional theory show that the modulated structures of BiO surfaces of cuprate Bi2212 superconductors are spontaneously formed and closely related to the reconstructions of BiO surfaces. The reconstructions of BiO layers occur both on the surface and in the bulk, accompanied with the formations of BiO-zigzag chains and Bi 2 O 2 quadrilaterals. The structural modulations of the BiO surface are along the b axis, perpendicular to the BiO-zigzag chains along the a axis. Our calculations provide a unified understanding of the formation of modulating structures in Bi2212. Another interesting result is that electronic structures of BiO surfaces are significantly influenced by the CuO 2 layer beneath because of the structural modulations and reconstructions.

  1. La Unión Europea y la gobernanza global del desarrollo

    Directory of Open Access Journals (Sweden)

    José Ángel Sotillo Lorenzo

    2017-01-01

    Full Text Available Si entendemos por gobernanza una forma de gobierno que promueve el desarrollo desde una opción pluridimensional y de gestión democrática de políticas que tienen ese objetivo, la Unión Europea sería un ejemplo de gobernanza. Y lo sería en una doble dimensión: la interna y la externa, ya que propone ser un actor civil global. Dentro de su papel como actor internacional ocupa un lugar destacado la política de desarrollo, donde la Unión Europea actúa en consonancia con los Objetivos de Desarrollo Sostenible y la Agenda 2030 para transformar nuestro mundo. Pero el proceso de integración choca con varios obstáculos que ponen en cuestión ese objetivo, por lo que la Unión necesita de un nuevo impulso para hacer frente a los desafíos internos y a escala global.

  2. El conflicto de Darfur: un reto para la credibilidad de la Unión Africana

    Directory of Open Access Journals (Sweden)

    María Ángeles Alaminos

    2008-01-01

    Full Text Available En el caso de la crisis de Darfur la Unión Africana esperaba conseguir su primer éxito a nivel internacional en la pacificación de un conflicto africano; el conflicto de Darfur ha supuesto un reto para su credibilidad. La Misión de la Unión Africana en Sudán (AMIS intentó poner fin a la crisis, pero los recursos limitados, tanto económicos como humanos fueron incapaces de frenarla. La protección de tres millones y medio de personas en situación de riesgo en Darfur ha constituido un desafío para la UA y una prueba de la efectividad de su misión AMIS. La Unión Africana quiere demostrar su valía como organización, su potencial en el desarrollo de acciones concretas, su preponderancia como actor en el ámbito africano y su relevancia como actor internacional.

  3. The Origin of Uni-axial Negative Thermal Expansion in a Layered Perovskite

    Science.gov (United States)

    Ablitt, Chris; Craddock, Sarah; Senn, Mark; Mostofi, Arash; Bristowe, Nicholas

    Using first-principles calculations within the quasi-harmonic approximation (QHA), we explain the origin of experimentally observed uni-axial negative thermal expansion (NTE) in a layered perovskite: the Ruddlesden-Popper (RP) oxide Ca2MnO4, which has anti-ferromagnetic ordering at low temperatures and is closely related to Ca3Mn2O7, which exhibits hybrid improper ferroelectricity and uni-axial NTE in competing phases. Dynamic tilts of MnO6 octahedra, common in many complex oxides, drive the expansion of the a axis and contraction of the c axis of the tetragonal NTE phase. We find that ferroelastic RP phases with a frozen octahedral rotation are unusually compliant to particular combinations of strains along different axes. The atomic mechanism responsible is characteristic of the perovskite/rock-salt interfaces present in the RP structure. We show that the contribution from this anisotropic elasticity must be taken into account in order to accurately predict NTE over the temperature range observed in experiment. A similar compliance to cooperative strains is found in other systems with uni-axial NTE. The development of this mechanistic understanding of NTE in complex oxides may pave the way for designing tunable multifunctional materials. The authors would like to acknowledge support from the EPSRC and the Centre for Doctoral Training in Theory and Simulation of Materials.

  4. Bi-stable optical actuator

    Science.gov (United States)

    Holdener, Fred R.; Boyd, Robert D.

    2000-01-01

    The present invention is a bi-stable optical actuator device that is depowered in both stable positions. A bearing is used to transfer motion and smoothly transition from one state to another. The optical actuator device may be maintained in a stable position either by gravity or a restraining device.

  5. Evaluating Employability Skills: Employer and Student Perceptions

    Science.gov (United States)

    Saunders, Venetia; Zuzel, Katherine

    2010-01-01

    Graduate employability is a key issue for Higher Education. In this two-part study student employability skills have been evaluated from the perspective of sandwich students and graduates in biomolecular science, and their employers. A strong correlation was found between employer and sandwich student/graduate perceptions of the relative…

  6. Dynamics of a minimal consumer network with bi-directional influence

    Science.gov (United States)

    Ekaterinchuk, Ekaterina; Jungeilges, Jochen; Ryazanova, Tatyana; Sushko, Iryna

    2018-05-01

    We study the dynamics of a model of interdependent consumer behavior defined by a family of two-dimensional noninvertible maps. This family belongs to a class of coupled logistic maps with different nonlinearity parameters and coupling terms that depend on one variable only. In our companion paper we considered the case of independent consumers as well as the case of uni-directionally connected consumers. The present paper aims at describing the dynamics in the case of a bi-directional connection. In particular, we investigate the bifurcation structure of the parameter plane associated with the strength of coupling between the consumers, focusing on the mechanisms of qualitative transformations of coexisting attractors and their basins of attraction.

  7. Novel Bi/BiOBr/AgBr composite microspheres: Ion exchange synthesis and photocatalytic performance

    Science.gov (United States)

    Lyu, Jianchang; Li, Zhenlu; Ge, Ming

    2018-06-01

    Novel Bi/BiOBr/AgBr composite microspheres were prepared by a rational in situ ion exchange reaction between Bi/BiOBr microspheres and AgNO3. The characteristic of the as-obtained ternary microspheres was tested by X-ray diffraction (XRD), energy dispersive X-ray spectrometer (EDS), scanning electron microscope (SEM), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), UV-vis diffuse reflectance spectroscopy (UV-vis DRS) and photoluminescence (PL). Under visible light irradiation, Bi/BiOBr/AgBr microspheres exhibited an excellent photocatalytic efficiency for rhodamine B (RhB) degradation, which was about 1.4 and 4.9 times as high as that of Bi/BiOBr and BiOBr/AgBr, demonstrating that the highest separation efficiency of charge carriers in the heterostructured Bi/BiOBr/AgBr. The photocatalytic activity of Bi/BiOBr/AgBr microspheres just exhibited a slight decrease after three consecutive cycles. The photocatalytic mechanism investigation confirmed that the superoxide radicals (O2•-) were the dominant reactive oxygen species for RhB degradation in Bi/BiOBr/AgBr suspension.

  8. Facile Fabrication of BiOI/BiOCl Immobilized Films with Improved Visible Light Photocatalytic Performance

    Science.gov (United States)

    Zhong, Yingxian; Liu, Yuehua; Wu, Shuang; Zhu, Yi; Chen, Hongbin; Yu, Xiang; Zhang, Yuanming

    2018-03-01

    Photocatalysis has been considered to be one of the most promising ways to photodegrade organic pollutants. Herein, a series of BiOI/BiOCl films coating on FTO were fabricated through a simple method at room temperature. The photocatalytic efficiency of 30%BiOI/BiOCl could reach more than 99% aiming to degrading RhB and MB after 90 and 120 min, respectively. Compared with BiOCl, 30%BiOI/BiOCl showed 12 times higher efficiency when degrading RhB. In comparison with BiOI, 30%BiOI/BiOCl showed 5 and 6 times higher efficiency when degrading RhB and MB, respectively. These obvious enhancements were attributed to expanded visible light absorption and high separation performance of photoinduced charge. Moreover, the photocatalytic activity of 30%BiOI/BiOCl had no obvious decrease after 5 recycles, suggesting that it was a promising photocatalyst for the removal of MB and RhB pollutants. Finally, the possible growth process for the BiOI/BiOCl thin films and photocatalysis mechanism were investigated in details. This work would provide insight to the reasonable construction of BiOX heterojunction and the photocatalytic mechanism in degrading organic pollutants.

  9. ANALISIS EKSPOR CRUDE PALM OIL (CPO INDONESIA DI UNI EROPA TAHUN 2000-2011

    Directory of Open Access Journals (Sweden)

    Nur Azizah

    2017-06-01

    Full Text Available Penelitian ini memiliki tujuan untuk menganalisis sejauh mana pengaruh produksi, kurs, harga CPO Internasional, GDP, dan dummy kebijakan Renewable Energy Directive 2009 (RED09 terhadap ekspor CPO Indonesia di Uni Eropa tahun 2000-2011. Metode penelitian yang digunakan untuk menganalisis faktor-faktor yang memengaruhi ekspor CPO Indonesia di kawasan Uni Eropa adalah analisis data panel. Penelitian ini menggunakan data sekunder berupa data cross section enam negara tujuan ekspor di kawasan Uni Eropa selama kurun waktu tahun 2000-2011. Enam negara yang dimaksud adalah Jerman, Italia, Belanda, Rusia, Spanyol, Ukrania yang memiliki jumlah ekspor CPO terbanyak dari Indonesia. Komoditas yang menjadi objek penelitian adalah CPO dengan kode Harmonized System 15111000. Hasil penelitian ini menunjukkan bahwa variabel produksi dan GDP berpengaruh positif dan signifikan terhadap volume ekspor CPO Indonesia di Uni Eropa. Harga CPO Internasional, kurs dan kebijakan RED09 terbukti tidak berpengaruh signifikan terhadap volume ekspor CPO Indonesia di Uni Eropa. This study aims to analyze the extent of the influence of production, exchange, International CPO prices, GDP, and the policy dummy Renewable Energy Directive 2009 (RED09 on Indonesia's CPO exports to the EU in 2000-2011. The method used to analyze the affect of factors of Indonesia's CPO export demanded to the European Union is a panel data analysis. This study uses secondary data, they are cross section data is six counties of export destinations in the European Union during the period of 2000-2011. Six countries in question are Germany, Italy, Netherlands, Russia, Spain, Ukraine which have the highest number of Indonesian CPO exports. The commoditiy which one of the object of the research is the CPO with 15111000 Harmonized System code. The results of this study indicate that the variables of production and GDP exchange are have positive impact and significant on the volume of Indonesian CPO exports to

  10. La armonización contable y de la auditoría en la Unión Europea

    Directory of Open Access Journals (Sweden)

    Antonio Barrantes Barrantes

    2000-06-01

    Full Text Available Este articulo ¡lustra la situación de las profesiones contable y auditora en la Unión Europea Se parte de una breve htstona de la gestación de la Unión Europea, continuando con los órganos rectores y los medios documentales-jurídicos con los que se instrumenta su organización. Se muestra seguidamente cómo se encuentran institucionalizadas la profesión contable y la auditoria en los países de la Unión y se analizan las causas que originan diferencias de criterios y usos contables en dichos países Consecuentemente con este análisis, se expresan comparativamente las directivas de la propia Unión (Octava Directiva, con la doctrina y las normas internacionales de auditoria, las propuestas para llevar a cabo una armonización eficiente y eficaz de la auditoria en la Unión Europea. Finalmente, se efectúa una exposición sobre cómo nacer realidad en el futuro la armonización contable y de la auditoria en la Unión.

  11. Facile Fabrication of BiOI/BiOCl Immobilized Films With Improved Visible Light Photocatalytic Performance

    Directory of Open Access Journals (Sweden)

    Yingxian Zhong

    2018-03-01

    Full Text Available HIGHLIGHTSA facial method was used to fabricate BiOI/BiOCl film at room temperature.30% BiOI/BiOCl showed an excellent photocatalytic activity and stability.Improvement of photocatalytic activity was owed to expanded visible light absorption and high separation efficiency of charge.Photocatalysis has been considered to be one of the most promising ways to photodegrade organic pollutants. Herein, a series of BiOI/BiOCl films coating on FTO were fabricated through a simple method at room temperature. The photocatalytic efficiency of 30%BiOI/BiOCl could reach more than 99% aiming to degrading RhB and MB after 90 and 120 min, respectively. Compared with BiOCl, 30%BiOI/BiOCl showed 12 times higher efficiency when degrading RhB. In comparison with BiOI, 30%BiOI/BiOCl showed 5 and 6 times higher efficiency when degrading RhB and MB, respectively. These obvious enhancements were attributed to expanded visible light absorption and high separation performance of photoinduced charge. Moreover, the photocatalytic activity of 30%BiOI/BiOCl had no obvious decrease after five recycles, suggesting that it was a promising photocatalyst for the removal of MB and RhB pollutants. Finally, the possible growth process for the BiOI/BiOCl thin films and photocatalysis mechanism were investigated in details. This work would provide insight to the reasonable construction of BiOX heterojunction and the photocatalytic mechanism in degrading organic pollutants.

  12. A three-dimensional BiOBr/RGO heterostructural aerogel with enhanced and selective photocatalytic properties under visible light

    International Nuclear Information System (INIS)

    Yu, Xue; Shi, Junjie; Feng, Lijuan; Li, Chunhu; Wang, Liang

    2017-01-01

    Highlights: • A BiOBr/RGO aerogel photocatalyst was synthesized using dopamine as reducing agent. • BiOBr/RGO aerogel can be easily controlled morphology by a simple two-step method. • BiOBr/RGO aerogel photocatalyst exhibited superior performance in MO decoloration. - Abstract: A series of BiOBr/reduced graphene oxide (RGO) aerogel was fabricated using a two steps hydrothermal method. Various methods such as SEM, TEM, DRS and Raman spectroscopy were employed to fully characterize the as-obtained BiOBr/RGO. Their photocatalytic degradation of methyl orange (MO) were studied under visible light irradiation. The combination of BiOBr and RGO result in an improved activity. The sample with 10 wt% RGO abbreviated as BiOBr-G10 shows the highest activity. Moreover, this sample exhibits a selective visible-light photocatalytic behavior as the degradation rate over MO (80%) is much higher than that over Rhodamin B (50%) and phenol (35%) in 60 min. The XRD and photoluminescence emission spectroscopy characterization of the BiOBr-G10 samples indicates an increased crystallization of BiOBr and efficient quenching of photo-excited electrons and holes contributes to the improved photocatalytic activities.

  13. A three-dimensional BiOBr/RGO heterostructural aerogel with enhanced and selective photocatalytic properties under visible light

    Energy Technology Data Exchange (ETDEWEB)

    Yu, Xue [Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, College of Chemistry and Chemical Engineering, Ocean University of China, Qing dao 266100 (China); Shi, Junjie, E-mail: junjieshiding@gmail.com [Institute of Applied and Physical Chemistry and Center for Environmental Research and Sustainable Technology, University Bremen, Leobener Str. UFT, 28359 Bremen (Germany); Feng, Lijuan; Li, Chunhu [Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, College of Chemistry and Chemical Engineering, Ocean University of China, Qing dao 266100 (China); Wang, Liang, E-mail: wangliangouc@ouc.edu.cn [Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, College of Chemistry and Chemical Engineering, Ocean University of China, Qing dao 266100 (China)

    2017-02-28

    Highlights: • A BiOBr/RGO aerogel photocatalyst was synthesized using dopamine as reducing agent. • BiOBr/RGO aerogel can be easily controlled morphology by a simple two-step method. • BiOBr/RGO aerogel photocatalyst exhibited superior performance in MO decoloration. - Abstract: A series of BiOBr/reduced graphene oxide (RGO) aerogel was fabricated using a two steps hydrothermal method. Various methods such as SEM, TEM, DRS and Raman spectroscopy were employed to fully characterize the as-obtained BiOBr/RGO. Their photocatalytic degradation of methyl orange (MO) were studied under visible light irradiation. The combination of BiOBr and RGO result in an improved activity. The sample with 10 wt% RGO abbreviated as BiOBr-G10 shows the highest activity. Moreover, this sample exhibits a selective visible-light photocatalytic behavior as the degradation rate over MO (80%) is much higher than that over Rhodamin B (50%) and phenol (35%) in 60 min. The XRD and photoluminescence emission spectroscopy characterization of the BiOBr-G10 samples indicates an increased crystallization of BiOBr and efficient quenching of photo-excited electrons and holes contributes to the improved photocatalytic activities.

  14. The effect of precursor powder size on the microstructure and integranular properties of Bi2223 superconductors

    Directory of Open Access Journals (Sweden)

    I. Abdolhosseini

    2006-09-01

    Full Text Available  We have studied the effect of precursor powder size on the microstructure and intergranular behavior of polycrystalline Bi2223 superconductors using the XRD, SEM, electrical resistivity and AC susceptibility techniques. Polycrystalline Bi2223 superconductors were prepared from the powders with different milling times. The XRD results show that by decreasing the precursor powder size the Bi2223 phase fraction increases. It was found that the grain size and grain connectivity improved by decreasing the precursor powder size. Analysis of the temperature dependence of the AC susceptibility near the transition temperature (Tc has been done employing Beans critical state model. The observed variation of intergranular critical current densities (Jc with temperature indicates that the decreasing of precursor powder size in the Bi2223 system cases an increase in the intergranular critical current density.

  15. Employment specialist competencies for supported employment programs

    NARCIS (Netherlands)

    Corbière, M.; Brouwers, E.P.M.; Lanctôt, N.; van Weeghel, J.

    2014-01-01

    Purpose Supported employment (SE) programs are evidence-based programs offered to people with severe mental illness to facilitate obtaining and keeping competitive work. However, significant variations in individuals’ vocational success may be partly explained by differences in their employment

  16. Towards Next Generation BI Systems

    DEFF Research Database (Denmark)

    Varga, Jovan; Romero, Oscar; Pedersen, Torben Bach

    2014-01-01

    Next generation Business Intelligence (BI) systems require integration of heterogeneous data sources and a strong user-centric orientation. Both needs entail machine-processable metadata to enable automation and allow end users to gain access to relevant data for their decision making processes....... This framework is based on the findings of a survey of current user-centric approaches mainly focusing on query recommendation assistance. Finally, we discuss the benefits of the framework and present the plans for future work....

  17. Teknisk Ståbi

    DEFF Research Database (Denmark)

    Teknisk Ståbi er de bygningsprojekterendes og entreprenørers håndbog. Den dækker matematik, fysik, statestik, laster og sikkerhed samt beggematerialerne: beton, stål, træ, murværk, letbeton, glas og endelig fundering. Denne udgave er en næsten totalrevision, baseret på de nye Eurocodes, der afløs...

  18. Direito e reprodução humana assistida nas uniões homoafetivas

    Directory of Open Access Journals (Sweden)

    José Márcio Carvalho da Silva

    2014-10-01

    Full Text Available A reprodução humana assistida em uniões homoafetivas é uma temática envolta em controvérsias na sociedade contemporânea, motico pelo qual o Poder Judiciário frequentemente é acionado no intuito de dirimir os conflitos existentes. Apesar da união de pessoas do mesmo sexo ser uma configuração familiar cada vez mais frequente no Brasil, o ordenamento brasileiro ainda é frágil em relação ao deslinde da questão. A inexistência de mecanismos legais específicos no país coloca o assunto em uma posição vulnerável a questionamentos éticos, morais, médicos, religiosos e sociais. Considerando este cenário de inegável transformação da estrutura familiar, o presente trabalho teve como objetivo principal analisar as repercussões jurídicas da reprodução humana assistida nas uniões homoafetivas. As considerações trazidas por este trabalho sinalizam que mesmo diante de alguns avanços, lacunas importantes necessitam ser preenchidas no âmbito do Direito. Algumas sentenças já foram favoráveis ao reconhecimento da paternidade e maternidade de casais homoafetivos cujos filhos foram gerados por meio de métodos de reprodução assistida, entretanto, as respostas aos dilemas que envolvem esse tipo de cinstituição familiar contemporânea ainda carecem de mecanismos legais mais concretos.

  19. Bismuth-boron multiple bonding in BiB_2O"- and Bi_2B"-

    International Nuclear Information System (INIS)

    Jian, Tian; Cheung, Ling Fung; Chen, Teng-Teng; Wang, Lai-Sheng

    2017-01-01

    Despite its electron deficiency, boron is versatile in forming multiple bonds. Transition-metal-boron double bonding is known, but boron-metal triple bonds have been elusive. Two bismuth boron cluster anions, BiB_2O"- and Bi_2B"-, containing triple and double B-Bi bonds are presented. The BiB_2O"- and Bi_2B"- clusters are produced by laser vaporization of a mixed B/Bi target and characterized by photoelectron spectroscopy and ab initio calculations. Well-resolved photoelectron spectra are obtained and interpreted with the help of ab initio calculations, which show that both species are linear. Chemical bonding analyses reveal that Bi forms triple and double bonds with boron in BiB_2O"- ([Bi≡B-B≡O]"-) and Bi_2B"- ([Bi=B=Bi]"-), respectively. The Bi-B double and triple bond strengths are calculated to be 3.21 and 4.70 eV, respectively. This is the first experimental observation of Bi-B double and triple bonds, opening the door to design main-group metal-boron complexes with multiple bonding. (copyright 2017 Wiley-VCH Verlag GmbH and Co. KGaA, Weinheim)

  20. Heterojunction BiOI/Bi2MoO6 nanocomposite with much enhanced photocatalytic activity

    International Nuclear Information System (INIS)

    Li, Wen Ting; Zheng, Yi Fan; Yin, Hao Yong; Song, Xu Chun

    2015-01-01

    BiOI/Bi 2 MoO 6 heterostructures with different amounts of BiOI were successfully prepared via a facile deposition method. The obtained BiOI/Bi 2 MoO 6 photocatalysts exhibited much higher visible light (λ > 420 nm) induced photocatalytic activity compared with single Bi 2 MoO 6 and BiOI photocatalysts. 20 % BiOI/Bi 2 MoO 6 nanocomposite exhibited the highest photocatalytic activity with almost all RhB decomposed within 70 min. However, excess BiOI covering on the surface of Bi 2 MoO 6 can inversely reduce the photocatalytic activity. The enhanced photocatalytic activities could be resulted from the function of the novel p–n heterojunction interface between Bi 2 MoO 6 and BiOI, which could separate photoinduced carriers efficiently. Possible mechanisms on the basis of the relative band positions were also discussed

  1. Planeamiento estratégico de la Provincia de La Unión

    OpenAIRE

    Palle Morales, Ana Vilma; Palacios Ramos, Roberto Carlos; Rodriguez Yucra, Carlos Martin

    2017-01-01

    La provincia de La Unión se creó mediante el Decreto Supremo del 4 de mayo de 1835 durante el gobierno del Presidente Luis José de Orbegoso y Moncada. Es reconocida como una de las provincias más pobres de la región de Arequipa, tambien es conocida por sus actividades económicas de agricultura y turismo, la provincia tamben esta beneficiada por sus recursos naturales y gran riqueza cultural. Sin embargo a la actualidad no ha logrado alacanzar un crecimiento econonomico y desarr...

  2. Resistencia de unión del sistema de postes REBILDA® con la dentina intrarradicular

    OpenAIRE

    Ross, Daphne; Filloy Esna, Carlos E.; Ramírez-Barrantes, Juan Carlos

    2017-01-01

    ResumenActualmente existe controversia en la literatura acerca de la efectividad clínica y adhesiva con respecto a los sistemas adhesivos de refuerzo radicular. Así, el objetivo de este estudio fue evaluar la resistencia de unión mediante la prueba de Push-Out entre el sistema de postes Rebilda® y la dentina intraradicular. Para esto, se utilizaron 28 dientes unirradiculares, que fueron cortados y padronizados en 16 mm. Los segmentos radiculares fueron sometidos a confección de tratamiento en...

  3. Nuevos movimientos migratorios en una unión europea ampliada

    Directory of Open Access Journals (Sweden)

    Andrés Tornos Cubillo

    2014-11-01

    Full Text Available Con ocasión de la última ampliación de la Unión Europea se han suscitado en diversos países no pocas preocupaciones a propósito de un posible aumento excesivo de los flujos migratorios procedentes de la antigua Europa del Este. Se ha elaborado una dura normativa para impedirlo y se han realizado numerosos estudios para prevenir una tal incidencia. Pero ni las cifras hoy disponibles ni los trabajos de prospectiva confirman en modo alguno esos temores.

  4. Informe sobre discriminación positiva en la Unión Europea

    OpenAIRE

    Palomino Lozano, Rafael

    2016-01-01

    Análisis de los principales sectores de la Unión Europea (declaraciones políticas, estudios estadísticos, instrumentos jurídicos) en los que se manifiesta la acción europea en favor de la discriminación positiva de la mujer. Este trabajo se inscribe dentro del Contrato de Investigación suscrito entre investigadores de diversas universidades españolas y extranjeras y la Consejería de Empleo y Mujer "Acciones positivas a favor de las mujeres en el sector de la participación política: Europa y A...

  5. A NEW FOOD CHAIN APPROACH: UNI EN ISO 22005:2008 VOLUNTARY CERTIFICATION

    Directory of Open Access Journals (Sweden)

    E. Guidi

    2011-01-01

    Full Text Available This work summarize an experience of auditing according to new UNI EN ISO 22005:2008. This new food chain certification scheme, arisen from two different European schemes of internal and external traceability certification, requires companies to build up their own check plans considering all components in food chain processing. This new approach, also derived from the European legislation, wants to verify if traceability system is under control and to verify if corrective actions to warrant hygienic production standards are built up.

  6. Calorimetric investigations of U-Bi system

    International Nuclear Information System (INIS)

    Agarwal, Renu; Joshi, A.R.

    2013-01-01

    U 0.333 Bi 0.667 is a compound that may form on breach of clad during reactor operation with metallic fuel and lead-bismuth coolant. Therefore, enthalpy of mixing of U-Bi liquid solution in limited composition range and enthalpy of formation of U 0.333 Bi 0.667 compound were measured by high temperature calorimetry. The enthalpy of mixing follows subregular solution model and enthalpy of formation U 0.333 Bi 0.667 from U(l) and Bi(l) at 843 K was -52.5 kJ/mol and -40.8 kJ/mol from U(s) and Bi(s) at 298.15 K. Both enthalpy of mixing and enthalpy of formation of intermetallic compound obtained experimentally were compared with Miedema model values. (author)

  7. A cDNA microarray, UniShrimpChip, for identification of genes relevant to testicular development in the black tiger shrimp (Penaeus monodon

    Directory of Open Access Journals (Sweden)

    Klinbunga Sirawut

    2011-04-01

    Full Text Available Abstract Background Poor reproductive maturation in captive male broodstock of the black tiger shrimp (Penaeus monodon is one of the serious problems to the farming industries. Without genome sequence, EST libraries of P. monodon were previously constructed to identify transcripts with important biological functions. In this study, a new version of cDNA microarray, UniShrimpChip, was constructed from the Peneaus monodon EST libraries of 12 tissues, containing 5,568 non-redundant cDNA clones from 10,536 unique cDNA in the P. monodon EST database. UniShrimpChip was used to study testicular development by comparing gene expression levels of wild brooders from the West and East coasts of Thailand and domesticated brooders with different ages (10-, 14-, 18-month-old. Results The overall gene expression patterns from the microarray experiments revealed distinct transcriptomic patterns between the wild and domesticated groups. Moreover, differentially expressed genes from the microarray comparisons were identified, and the expression patterns of eight selected transcripts were subsequently confirmed by reverse-transcriptase quantitative PCR (RT-qPCR. Among these, expression levels of six subunits (CSN2, 4, 5, 6, 7a, and 8 of the COP9 signalosome (CSN gene family in wild and different ages of domesticated brooders were examined by RT-qPCR. Among the six subunits, CSN5 and CSN6 were most highly expressed in wild brooders and least expressed in the 18-month-old domesticated group; therefore, their full-length cDNA sequences were characterized. Conclusions This study is the first report to employ cDNA microarray to study testicular development in the black tiger shrimp. We show that there are obvious differences between the wild and domesticated shrimp at the transcriptomic level. Furthermore, our study is the first to investigate the feasibility that the CSN gene family might have involved in reproduction and development of this economically important

  8. Functional recovery differences after stroke rehabilitation in patients with uni- or bilateral hemiparesis

    Science.gov (United States)

    Bindawas, Saad M.; Mawajdeh, Hussam M.; Vennu, Vishal S.; Alhaidary, Hisham M.

    2017-01-01

    Objective: To examine the functional recovery differences after stroke rehabilitation in patients with uni- or bilateral hemiparesis. Methods: In this retrospective study, we included data from the medical record of all 383 patients with uni- or bilateral hemiparesis after stroke who were admitted to King Fahad Medical City-Rehabilitation Hospital between 2008 and 2014 in Riyadh, Kingdom of Saudi Arabia. According to the site of hemiparesis, we classified patients into 3 groups: right hemiparesis (n=208), left hemiparesis (n=157), and bilateral hemipareses (n=18). The patients (n=49) who did not have either site of hemiparesis were excluded. The Functional Independence Measures (FIM) instrument was used to assess the score at admission and discharge. A post hoc test was conducted to examine the functional recovery differences between groups. Multiple regression analyses were used to confirm the findings. Results: Amongst the three groups, there were significant (phemiparesis group. Multiple regression analyses also confirmed that the site of hemiparesis significantly (phemiparesis after stroke. PMID:28678212

  9. WWW-based remote analysis framework for UniSampo and Shaman analysis software

    International Nuclear Information System (INIS)

    Aarnio, P.A.; Ala-Heikkilae, J.J.; Routti, J.T.; Nikkinen, M.T.

    2005-01-01

    UniSampo and Shaman are well-established analytical tools for gamma-ray spectrum analysis and the subsequent radionuclide identification. These tools are normally run locally on a Unix or Linux workstation in interactive mode. However, it is also possible to run them in batch/non-interactive mode by starting them with the correct parameters. This is how they are used in the standard analysis pipeline operation. This functionality also makes it possible to use them for remote operation over the network. Framework for running UniSampo and Shaman analysis using the standard WWW-protocol has been developed. A WWW-server receives requests from the client WWW-browser and runs the analysis software via a set of CGI-scripts. Authentication, input data transfer, and output and display of the final analysis results is all carried out using standard WWW-mechanisms. This WWW-framework can be utilized, for example, by organizations that have radioactivity surveillance stations in a wide area. A computer with a standard internet/intranet connection suffices for on-site analyses. (author)

  10. Prediction of Metabolic Pathway Involvement in Prokaryotic UniProtKB Data by Association Rule Mining

    KAUST Repository

    Boudellioua, Imene; Saidi, Rabie; Hoehndorf, Robert; Martin, Maria J.; Solovyev, Victor

    2016-01-01

    The widening gap between known proteins and their functions has encouraged the development of methods to automatically infer annotations. Automatic functional annotation of proteins is expected to meet the conflicting requirements of maximizing annotation coverage, while minimizing erroneous functional assignments. This trade-off imposes a great challenge in designing intelligent systems to tackle the problem of automatic protein annotation. In this work, we present a system that utilizes rule mining techniques to predict metabolic pathways in prokaryotes. The resulting knowledge represents predictive models that assign pathway involvement to UniProtKB entries. We carried out an evaluation study of our system performance using cross-validation technique. We found that it achieved very promising results in pathway identification with an F1-measure of 0.982 and an AUC of 0.987. Our prediction models were then successfully applied to 6.2 million UniProtKB/TrEMBL reference proteome entries of prokaryotes. As a result, 663,724 entries were covered, where 436,510 of them lacked any previous pathway annotations.

  11. UniDA: Uniform Device Access Framework for Human Interaction Environments

    Directory of Open Access Journals (Sweden)

    Santiago Vazquez-Rodriguez

    2011-09-01

    Full Text Available Human interaction environments (HIE must be understood as any place where people carry out their daily life, including their work, family life, leisure and social life, interacting with technology to enhance or facilitate the experience. The integration of technology in these environments has been achieved in a disorderly and incompatible way, with devices operating in isolated islands with artificial edges delimited by the manufacturers. In this paper we are presenting the UniDA framework, an integral solution for the development of systems that require the integration and interoperation of devices and technologies in HIEs. It provides developers and installers with a uniform conceptual framework capable of modelling an HIE, together with a set of libraries, tools and devices to build distributed instrumentation networks with support for transparent integration of other technologies. A series of use case examples and a comparison to many of the existing technologies in the field has been included in order to show the benefits of using UniDA.

  12. Prediction of Metabolic Pathway Involvement in Prokaryotic UniProtKB Data by Association Rule Mining

    KAUST Repository

    Boudellioua, Imene

    2016-07-08

    The widening gap between known proteins and their functions has encouraged the development of methods to automatically infer annotations. Automatic functional annotation of proteins is expected to meet the conflicting requirements of maximizing annotation coverage, while minimizing erroneous functional assignments. This trade-off imposes a great challenge in designing intelligent systems to tackle the problem of automatic protein annotation. In this work, we present a system that utilizes rule mining techniques to predict metabolic pathways in prokaryotes. The resulting knowledge represents predictive models that assign pathway involvement to UniProtKB entries. We carried out an evaluation study of our system performance using cross-validation technique. We found that it achieved very promising results in pathway identification with an F1-measure of 0.982 and an AUC of 0.987. Our prediction models were then successfully applied to 6.2 million UniProtKB/TrEMBL reference proteome entries of prokaryotes. As a result, 663,724 entries were covered, where 436,510 of them lacked any previous pathway annotations.

  13. Unión de Naciones Suramericanas -100 Días-

    Directory of Open Access Journals (Sweden)

    Láster Gutiérrez Cuadro

    2008-07-01

    Full Text Available ResumenPor considerar que las revistas son un medio de comunicación importante para la difusión de temas de interés en laformación de los nuevos profesionales, he solicitado permiso al Periódico “Minka News, de Londres”, para publicarel valioso resumen que se hace referente a la “Unión de Naciones Suramericanas”, para que de esta manera quedeen la mente de nuestros estudiantes un referente que les permita hacer un ejercicio crítico y reflexivo respectoa los aconteceres de América Latina, a partir de interrogantes como: ¿Qué se pretende con la Unión de NacionesSuramericanas?, ¿Cuál es el propósito político?, ¿Cuál es el propósito económico?, ¿Qué relevancia tendrá parael desarrollo de América Latina?, ¿Qué papel jugarán los residentes raizales y adoptivos de América Latina?, estosson algunos de los interrogantes que se pueden plantear en aras de debatir a través de procesos de investigaciónde la Universidad. La transcripción es textual, incluso en el idioma que se publicó alguna parte del texto, es decir,sin cambios y ni tratamientos para adoptarla a intereses particulares; el propósito es dejar en los lectores un conocimientode la existencia de la “Unión de Naciones Suramericanas”Palabras Claves: Unasur; Unión Europea; Bloque económico; Unión de países; Libre transito. Abstract:Considering that magazines are an important medium for the dissemination of topics of interest in the formationof the new professionals, I have requested permission to the newspaper “Minka News, London,” to publish thevaluable summary referred to the “South American Union of Nations”, for it would be in the minds of our students abenchmark that will enable them to exercise a critical and thoughtful regard to happen in Latin America, starting withquestions like: What is intended by the South American Union of Nations, “What is the political purpose,” What is theeconomic purpose, what would have relevance to the

  14. Evidence of weak pair coupling in the penetration depth of bi-based high-Tc superconductors

    International Nuclear Information System (INIS)

    Thompson, J.R.; Sun, Yang Ren; Ossandon, J.G.; Christen, D.K.; Chakoumakos, B.C.; Sales, B.C.; Kerchner, H.R.; Sonder, E.

    1990-01-01

    The magnetic penetration depth λ(T) has been investigated in Bi(Pb)SrCaCuO high-T c compounds having 2- and 3-layers of copper-oxygen per unit cell. Studies of the magnetization in the vortex state were employed and the results were compared with weak and strong coupling calculations. The temperature dependence of λ is described well by BCS theory in the clean limit, giving evidence for weak pair coupling in this family of materials. For the short component of the λ tensor, we obtain values of 292 and 220 nm (T = 0) for Bi-2212 and (BiPb)-2223, respectively

  15. BI-ratkaisuja talouden suoritusjohtamiseen

    OpenAIRE

    Syrjä, Tero

    2013-01-01

    Tämä opinnäytetyö tehtiin tietojärjestelmiä toimittavan yrityksen tietovarasto- ja raportointiratkaisuja toteuttavan tiimin toiminnankehittämishankkeen yhteydessä. Kehitystavoitteena oli parantaa yrityksen muun henkilöstön tietämystä business intelligencestä. Opinnäyttetyön tavoitteena oli toimia osana tätä tavoitetta ja toimia dokumenttina, jota voitaisiin hyödyntää tilanteissa, joissa BI-tietämyksen kasvattaminen on tarpeen. Pääasiallisesti opinnäytetyö sisältää teoriaa liiketoimintatie...

  16. Metaplasia Intestinal en la unión esófago-gástrica, frecuencia y correlaciones

    OpenAIRE

    Barreda Bolaños, Fernando; Sánchez Lihon, Juvenal; Tello Huamaní, Waldo; Gómez Ponce, Regina; Díaz del Olmo, Mauricio

    2001-01-01

    La incidencia del adenocarcinoma alrededor de la unión esófago-gástrica está en incremento. La significación de la metaplasia intestinal encontrada en muestras obtenidas de la unión esófago-gástrica de aspecto normal no es clara. El propósito del presente reporte ha sido el definir la frecuencia de presentación de la metaplasia intestinal en la unión esófago-gástrica con apariencia endoscópica normal y precisar sus relaciones clínicas, endoscópicas e histológicas. METODOS: Se evaluaron 239 pa...

  17. Dispersion interactions between neighboring Bi atoms in (BiH3 )2 and Te(BiR2 )2.

    Science.gov (United States)

    Haack, Rebekka; Schulz, Stephan; Jansen, Georg

    2018-03-13

    Triggered by the observation of a short Bi⋯Bi distance and a BiTeBi bond angle of only 86.6° in the crystal structure of bis(diethylbismuthanyl)tellurane quantum chemical computations on interactions between neighboring Bi atoms in Te(BiR 2 ) 2 molecules (R = H, Me, Et) and in (BiH 3 ) 2 were undertaken. Bi⋯Bi distances atoms were found to significantly shorten upon inclusion of the d shells of the heavy metal atoms into the electron correlation treatment, and it was confirmed that interaction energies from spin component-scaled second-order Møller-Plesset theory (SCS-MP2) agree well with coupled-cluster singles and doubles theory including perturbative triples (CCSD(T)). Density functional theory-based symmetry-adapted perturbation theory (DFT-SAPT) was used to study the anisotropy of the interplay of dispersion attraction and steric repulsion between the Bi atoms. Finally, geometries and relative stabilities of syn-syn and syn-anti conformers of Te(BiR 2 ) 2 (R = H, Me, Et) and interconversion barriers between them were computed. © 2018 Wiley Periodicals, Inc. © 2018 Wiley Periodicals, Inc.

  18. Fleet Conversion in Local Government: Determinants of Driver Fuel Choice for Bi-Fuel Vehicles

    Science.gov (United States)

    Johns, Kimberly D.; Khovanova, Kseniya M.; Welch, Eric W.

    2009-01-01

    This study evaluates the conversion of one local government's fleet from gasoline to bi-fuel E-85, compressed natural gas, and liquid propane gas powered vehicles at the midpoint of a 10-year conversion plan. This study employs a behavioral model based on the theory of reasoned action to explore factors that influence an individual's perceived and…

  19. Employer's Manual on Affirmative Action in Employment.

    Science.gov (United States)

    Kentucky State Commission on Human Rights, Frankfort.

    The express purpose of this manual is for its use by business and industry in Kentucky as an aid to eliminate discrimination. Affirmative action is defined here as a comprehensive effort by an employer designed to: employ women and minority persons where they are under-utilized; include minority persons and women in all facets of the company's…

  20. Employing Discourse: Universities and Graduate "Employability"

    Science.gov (United States)

    Boden, Rebecca; Nedeva, Maria

    2010-01-01

    What constitutes graduate employability is discursively framed. In this paper we argue that whilst universities in the UK have long had an involvement in producing useful and productive citizens, the ongoing neoliberalisation of higher education has engendered a discursive shift in definitions of employability. Traditionally, universities regarded…

  1. El coste de oportunidad como determinante del autoempleo en la Unión Europea (UE 25

    Directory of Open Access Journals (Sweden)

    Luis Miguel Zapico Aldeano

    2008-06-01

    Full Text Available Este trabajo pretende introducir en el análisis de la motivación de la actividad emprendedora el potencial efecto negativo del coste de oportunidad asociado a la misma. Para lograr este objetivo se aplicó un análisis de ecuaciones estructurales con la aproximación Partial Least Squares (PLS sobre una muestra de ciudadanos de la Unión Europea agrupados por países, para el periodo 2004. Los resultados muestran que la motivación emprendedora presenta una estructura interna dual formada por dos componentes independientes, uno relacionado con el atractivo intrínseco del autoempleo y otro relacionado con el atractivo intrínseco del estatus de empleado. Concretamente, los resultados indican una influencia directamente proporcional, sobre la intención emprendedora, de los elementos asociados al atractivo de ser empresario. También se verifica la relación inversamente proporcional de los elementos asociados al atractivo de ser empleado; siendo este efecto desmotivador de menor cuantía que el citado en primer lugar. Desde un punto de vista práctico, se plantea que las políticas de estímulo de la actividad emprendedora deberían tener en cuenta que no únicamente los ciudadanos con actitudes negativas hacia el autoempleo rechazan crear empresas, el atractivo del empleo por cuenta ajena es un determinante adicional significativo.This paper tries to include the potential negative effect of the opportunity cost over the motivation analysis related to the entrepreneurial activity. According to this aim, a Structural Equation Modelling analysis with Partial Least Squares (PLS approach was performed over a sample of European citizens clustered by country, within the period 2004. The results show that entrepreneurial motivation has a dual internal structure based on two independent components, one connected to the intrinsic attractiveness of self-employment and another one connected to the intrinsic attractiveness of the employee status

  2. Nondestructive testing of the low-level radioactive waste drums for uni-axial compressive strength and free liquid content

    International Nuclear Information System (INIS)

    Yu Geping; Chang Mingyu; Wang Yeajeng; Chu, David S.L.; Ju Yihzen

    1992-01-01

    This paper summarizes the nondestructive test to determine the uni-axial compressive strength and free water content of solidified low level radioactive waste. The uni-axial compressive strength is determined by ultrasonic wave propagation speed, and the results are compared with those of compressive tests. Three methods of detecting the surface free water by ultrasonic testing are established, the ultrasonic wave speed, wave form and pulse height are used to determine the existence and amount of the surface free liquid. Possible difficulties are discussed. (author)

  3. El papel de la Unión Europea en las negociaciones internacionales sobre cambio climático

    Directory of Open Access Journals (Sweden)

    Delia Contreras García

    2013-01-01

    Full Text Available Aunque la Unión Europea se ha esforzado en asumir el liderazgo internacional en la lucha contra el cambio climático, una serie de factores han dejado al descubierto los defectos y debilidades que minimizan el liderazgo europeo. En este contexto nuestro estudio tiene por objetivo valorar los principales parámetros en los que se basa la política medioambiental de la Unión Europea, a fin de determinar si la organización goza de la legitimidad necesaria para impulsar los esfuerzos internacionales destinados a frenar el calentamiento global.

  4. Markkinointimixin hyödyntäminen UniQ10ue - kosmetiikkasarjan kanssa : business to business -markkinointiviestintä

    OpenAIRE

    Mattsson, Ida-Sofia

    2015-01-01

    Kehittämistyössä toimeksiantajana on Hoitolatukku, joka maahantuo ja myy kauneusalan ammattilaisten tarvikkeita, laitteita sekä tuotteita. Hoitolatukun uutuus kosmetiikkasarja UniQ10ue tuotiin maahan kesän 2015 alussa ja se kaipaa lisää tunnettuutta sekä myynnin kasvua. Kehittämistyössä saatiin toimeksiantajalta vapaat kädet suunnitella ja toteuttaa erilaisia toimia UniQ10ue – kosmetiikkasarjalle. Kehittämistyössä sovelletaan markkinointimixiä ja perehdytään erityisesti markkinointiviesti...

  5. MLED_BI: a new BI Design Approach to Support Multilingualism in Business Intelligence

    Directory of Open Access Journals (Sweden)

    Nedim Dedić

    2017-11-01

    Full Text Available Existing approaches to support Multilingualism (ML in Business Intelligence (BI create problems for business users, present a number of challenges from the technical perspective, and lead to issues with logical dependence in the star schema. In this paper, we propose MLED_BI (Multilingual Enabled Design for Business Intelligence, a novel BI design approach to support the application of ML in BI Environment, which overcomes the issues and problems found with existing approaches. The approach is based on a revision of the data warehouse dimensional modelling approach and treats the Star Schema as a higher level entity. This paper describes MLED_BI and the validation and evaluation approach used.

  6. Photocatalytic activity of Bi_2WO_6/Bi_2S_3 heterojunctions: the facilitation of exposed facets of Bi_2WO_6 substrate

    International Nuclear Information System (INIS)

    Yan, Long; Wang, Yufei; Shen, Huidong; Zhang, Yu; Li, Jian; Wang, Danjun

    2017-01-01

    Highlights: • Bi_2S_3/Bi_2WO_6 hybrids with exposed (020) Bi_2WO_6 facets have been synthesized. • X-ray photoelectron spectroscopy reveals that a small amount of Bi_2S_3 was formed. • The enhanced photoactivity of hybrids is due to heterojunction and (020) facets. • A possible photocatalytic degradation mechanism is proposed. - Abstract: Bi_2S_3/Bi_2WO_6 hybrid architectures with exposed (020) Bi_2WO_6 facets have been synthesized via a controlled anion exchange approach. X-ray photoelectron spectroscopy (XPS) reveals that a small amount of Bi_2S_3 was formed on the surface of Bi_2WO_6 during the anion exchange process, thus leading to the transformation from the Bi_2WO_6 to Bi_2S_3/Bi_2WO_6. A rhodamine B (RhB) aqueous solution was chosen as model organic pollutants to evaluate the photocatalytic activities of the Bi_2S_3/Bi_2WO_6 catalysts. Under visible light irradiation, the Bi_2S_3/Bi_2WO_6-TAA displayed the excellent visible light photoactivities compared with pure Bi_2S_3, Bi_2WO_6 and other composite photocatalysts. The efficient photocatalytic activity of the Bi_2S_3/Bi_2WO_6-TAA composite microspheres was ascribed to the constructed heterojunctions and the inner electric field caused by the exposed (020) Bi_2WO_6 facets. Active species trapping experiments revealed that h"+ and O_2·"− are the main active species in the photocatalytic process. Furthermore, the as-obtained photocatalysts showed good photocatalytic activity after four recycles. The results presented in this study provide a new concept for the rational design and development of highly efficient photocatalysts.

  7. Becoming Self-Employed.

    Science.gov (United States)

    Lee, Grant; Cochran, Larry

    1997-01-01

    Explored how persons become self-employed. In critical incident interviews with five self-employed persons the critical events that assisted or hindered progress toward self-employment were listed in chronological order. In general, becoming self-employed involved establishing conditions of action that enhanced a sense of agency, thus enabling…

  8. Gd-substituted Bi-2223 superconductor

    Indian Academy of Sciences (India)

    The effects of gadolinium doping at calcium site on the normal and super- conducting properties of Bi-2223 system were ... quantities of the metal oxides and the carbonates were taken and thoroughly mixed. The calcination of the mixture after .... Therefore, Gd has higher solubility in (BiPb)-2223 as compared to Pr, and is, ...

  9. UniSat-5: a space-based optical system for space debris monitoring

    Science.gov (United States)

    Di Roberto, Riccardo; Cappelletti, Chantal

    2012-07-01

    commercially available RF equipment, allows for an affordable, stand-alone system for digital imaging in space. The space debris observation will work in pair with the attitude determination system, as well as the orbit determination system. UniSat-5 micro-satellite will be launched during Q4 2012 by a Kosmotras DNEPR LV, and it will be injected in a Sun Synchronous Orbit. UniSat-5 will be a the first university satellite for space debris monitoring, and it will test the technology for the future design of a formation flight for on orbit optical debris detection. This paper deals with the space debris observation system boarded on UniSat-5 and the observation strategies adopted considering the mission proposed.

  10. Unión monetaria, factibilidad para América Latina

    Directory of Open Access Journals (Sweden)

    Julio César César Valdés

    2018-01-01

    Full Text Available Como resultado de una serie de eventos y acontecimientos que en el orden económico tuvieron lugar a lo largo de la historia y que incidieron en la conducción política de los países, es que surge el interés de muchos continentes, regiones y países en diseñar una unión monetaria. El objetivo que se plantea para la presente investigación es analizar las condiciones existentes en América Latina para la posible implementación de una unión monetaria, para el desarrollo del objetivo nos apoyamos en el criterio de autores de relevante trayectoria internacional en las áreas de la economía y las finanzas como fueron Bayoumi y Eichengreen (2000, Powell y Sturzenegger (2003, también fueron consultados los premios nobel de economía Joseph Stiglitz (2016 y Robert Mundell (1965,sus significativos contribuciones resultaron de gran aporte para la presente investigación. La metodología empleada fue la realización de un análisis retrospectivo y transversal de la realidad de América Latina para implementar la unión monetaria. Tanto el objetivo planteado como la metodología, unida a otras técnicas de investigación nos permiten plantear como principales resultados, que los países latinoamericanos cuentan con insuficiencia en su capacidad para obtener la cantidad de divisas suficientes para mantener y/o estabilizar sus balanzas de pagos y cerrar sus cuentas internacionales, se plantea que el uso de numerosas monedas crea múltiples dificultades para el intercambio comercial regional. Se concluye como consideraciones finales que América Latinaaún no reúne las condiciones necesarias para que circule una moneda única ya que los modelos económicos de los diferentes países de la región son totalmente divergentes entre sí.

  11. One-step growth of nanosheet-assembled BiOCl/BiOBr microspheres for highly efficient visible photocatalytic performance

    Science.gov (United States)

    Zhang, Jinfeng; Lv, Jiali; Dai, Kai; Liang, Changhao; Liu, Qi

    2018-02-01

    In this work, we have developed a simple synthetic approach of nanosheet-assembled BiOCl/BiOBr microspheres by an ethylene glycol (EG)-assisted hydrothermal method. The crystalline form, morphology, chemical composition, optical performance and surface area of BiOCl/BiOBr microspheres were identified using X-ray diffraction (XRD), transmission electron microscopy (TEM), high resolution TEM (HRTEM), scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy spectra (EDX), UV-vis diffuse reflectance spectroscopy (DRS) analysis, high resolution X-ray photoelectron spectra (XPS) and N2 adsorption-desorption isotherms. BiOCl/BiOBr microspheres were nanosheet-assembled particles, which possessed visible light absorption under LED light irridation. Additionally, the methylene blue (MB) photodegradation performance of different BiOCl/BiOBr microspheres irradiated under 410 nm LED light arrays were investigated, the results exhibited that as-prepared BiOCl/BiOBr products showed higher catalytic effiency than pure BiOCl or BiOBr. By optimizing the composition ration of the BiOCl and BiOBr, up to 93% degradation rate can be obtained in the 40%BiOCl/BiOBr microspheres. Finally, the photocatalytic mechanism of BiOCl/BiOBr microspheres had been proposed.

  12. Total dose radiation effects of pressure sensors fabricated on uni-bond-SOI materials

    International Nuclear Information System (INIS)

    Zhu Shiyang; Huang Yiping; Wang Jin; Li Anzhen; Shen Shaoqun; Bao Minhang

    2001-01-01

    Piezoresistive pressure sensors with a twin-island structure were successfully fabricated using high quality Uni-bond-SOI (On Insulator) materials. Since the piezoresistors were structured by the single crystalline silicon overlayer of the SOI wafer and were totally isolated by the buried SiO 2 , the sensors are radiation-hard. The sensitivity and the linearity of the pressure sensors keep their original values after being irradiated by 60 Co γ-rays up to 2.3 x 10 4 Gy(H 2 O). However, the offset voltage of the sensor has a slight drift, increasing with the radiation dose. The absolute value of the offset voltage deviation depends on the pressure sensor itself. For comparison, corresponding polysilicon pressure sensors were fabricated using the similar process and irradiated at the same condition

  13. Isabelle Vagnoux. Les Etats-Unis et le Mexique. Histoire d’une relation tumultueuse.

    Directory of Open Access Journals (Sweden)

    Mario Menéndez

    2006-04-01

    Full Text Available Rares sont les ouvrages qui vous mènent dans le labyrinthe historique des relations entre deux pays sans jamais vous lâcher dans les ténèbres de la confusion. Pari réussi de l’auteur dans cet ouvrage consacré aux riches et ambiguës relations entretenues entre le Mexique et les Etats-Unis depuis le début du XIXe siècle, et qui semblent se perpétuer, sous d’autres aspects, encore aujourd’hui. Le parti pris d’une présentation chronologique de l’histoire peut surprendre, mais elle s’avère, grâce ...

  14. Analysis of a front suspension system for UniART FSAE car using FEA

    Science.gov (United States)

    Zaidie, M. N. A.; Hashim, M. S. M.; Tasyrif, M.; Basha, M. H.; Ibrahim, I.; Kamaruddin, N. S.; Shahriman, A. B.

    2017-10-01

    In recent years, many research works from institutions that participated in Formula SAE had highlighted on suspension systems. The aim is to improve the system in term of performance and robustness. However, every suspension system for a racing car is tailored to the car itself. Thus, this paper proposes a new design for front suspension system for UniART FSAE car. The new design was than being compared to the previous suspension system for enhancement. The analysis covered in this paper based on several conditions such as braking, cornering and bumping condition and was carried out using finite element analysis. Each main component for the suspension system such as lower arm, upper arm and knuckle has been analysed in term of strength and performance. From the results, the proposed new design of the suspension system has improved in term of strength and performance compared to the previous suspension system.

  15. Design optimization of rear uprights for UniMAP Automotive Racing Team Formula SAE racing car

    Science.gov (United States)

    Azmeer, M.; Basha, M. H.; Hamid, M. F.; Rahman, M. T. A.; Hashim, M. S. M.

    2017-10-01

    In an automobile, the rear upright are used to provide a physical mounting and links the suspension arms to the hub and wheel assembly. In this work, static structural and shape optimization analysis for rear upright for UniMAP’s Formula SAE racing car had been done using ANSYS software with the objective to reduce weight while maintaining the structural strength of the vehicle upright. During the shape optimization process, the component undergoes 25%, 50% and 75 % weight reduction in order to find the best optimal shape of the upright. The final design of the upright is developed considering the weight reduction, structural integrity and the manufacturability. The final design achieved 21 % weight reduction and is able to withstand several loads.

  16. Magnetic ordering and frustration in hexagonal UNi{sub 4}B

    Energy Technology Data Exchange (ETDEWEB)

    Mentink, S A.M. [Rijksuniversiteit Leiden (Netherlands). Kamerlingh Onnes Lab.; Drost, A [Netherlands Energy Research Foundation (ECN), Petten (Netherlands); Nieuwenhuys, G J [Rijksuniversiteit Leiden (Netherlands). Kamerlingh Onnes Lab.; Frikkee, E [Netherlands Energy Research Foundation (ECN), Petten (Netherlands); Menovsky, A A [Rijksuniversiteit Leiden (Netherlands). Kamerlingh Onnes Lab.

    1994-05-01

    We have determined unusual magnetic ordering of the hexagonal intermetallic uranium compound UNi{sub 4}B via neutron diffraction. In the easy basal plane the U-moments have triangular symmetry with antiferromagnetic interactions. Along the hard c axis ferromagnetic coupling occurs. Below T{sub N} = 20 K only two out of every three U-moments of 1.2 {mu}{sub B} order in vortex-like arrangements around the third paramagnetic spin. This novel magnetic structure is related to the occurrence of a crystallographic superstructure. Previously observed anomalies in bulk properties below T{sub N} are attributed to unconventional spin-wave excitations associated with this type of ordering. (orig.).

  17. Studying fatigue damage evolution in uni-directional composites using x-ray computed tomography

    DEFF Research Database (Denmark)

    Mikkelsen, Lars Pilgaard

    , it will be possible to lower the costs of energy for wind energy based electricity. In the present work, a lab-source x-ray computed tomography equipment (Zeiss Xradia 520 Versa) has been used in connection with ex-situ fatigue testing of uni-directional composites in order to identify fibre failure during...... comparable x-ray studies) have been used in order to ensure a representative test volume during the ex-situ fatigue testing. Using the ability of the x-ray computed tomography to zoom into regions of interest, non-destructive, the fatigue damage evolution in a repeating ex-situ fatigue loaded test sample has...... improving the fatigue resistance of non-crimp fabric used in the wind turbine industry can be made....

  18. Fatigue behaviour of uni-directional flax fibre/epoxy composites

    DEFF Research Database (Denmark)

    Ueki, Yosuke; Lilholt, Hans; Madsen, Bo

    2015-01-01

    A study related to the fatigue behaviour of natural fibre-reinforced composites was conducted to expand their range of product applications. A uni-directional flax-epoxy composite was fabricated and several conditions of tension-tension fatigue tests were performed. During fatigue testing......, the composite showed an increase of stiffness, a typical observation for natural fibre-reinforced composites, and this was found to be accompanied by accumulation of residual strain. A clear linear relationship was found between the stiffening effect and the residual strain. In addition, it was revealed...... that the fatigue behaviour was clearly influenced by the frequency of cyclic loading. Lower frequencies induced more significant stiffening and shorter fatigue life. These results suggest that fatigue damaging is progressing simultaneously with the stiffening effect in natural fibre-reinforced composites...

  19. The unique sound of the uni-vibe pedal: Part II. Transient behaviour

    Science.gov (United States)

    Hahlweg, Cornelius F.; Rothe, Hendrik

    2013-09-01

    The Uni-Vibe is an effect pedal mostly used by electric guitar players. It is based on an opto-electronically controlled all-pass chain. In last year's paper on the subject an idealized system model was derived, which lead to deeper discussion of the musical consequences of the effect in terms of harmonic analysis of single tones and chords in clean and distorted mode. As a direct continuation the present paper deals with the transient behaviour of the device. The transient response is essential for understanding the special sound character, the reaction on picking techniques and the interaction with certain instruments. Therefore the system model is expanded and the pulse response of the idealized time invariant system is derived.

  20. Conference: Superconductivity, theory and practical challenges of a quantum phenonemon | 25 August | Uni Dufour

    CERN Multimedia

    2015-01-01

    On Tuesday, 25 August, J. Georg Bednorz (Nobel prize in physics 1987, IBM Research Zurich) and Louis Taillefer (physicist and professor at the University of Sherbrooke, Canada, and at the Canadian Institute for Advanced Research) will give a conference on the fascinating theme of superconductivity. "Superconductivity: theory and practical challenges of a quantum phenonemon" Uni Dufour Tuesday, 25 August at 7 p.m. This conference is organized by the Faculty of science of the University of Geneva, as part of the International Congress Materials and Mechanisms of Superconductivity (M2S - 2015). Discovered more than 100 years ago, superconductivity remains one of the most fascinating manifestations of the laws of physics, observable only at low temperatures. This phenomenon, which allows the transport of electricity without any loss of energy, leads to various technological applications, for example in magnetically levitated vehicles, in MRI and in ...

  1. Europa en crisis: El desencanto de la Unión Europea

    Directory of Open Access Journals (Sweden)

    Stella Maris Shmite

    2014-01-01

    Full Text Available Las desigualdades y las tensiones sociales se manifiestan territorialmente en las ciudades europeas, las que se constituyen en espacios estratégicos donde se materializan las reivindicaciones sociales. La combinación del proceso de globalización y la organización institucional supranacional de Europa, junto a las profundas transformaciones que afectan la economía y por lo tanto, al sistema social característico del Estado de Bienestar, conducen a la emergencia de sentimientos de insatisfacción e incertidumbre que se expresan en los movimientos sociales. En este artículo se aborda el rol de la Unión Europea frente a la crisis, las respuestas institucionales, las consecuencias económicas y sociales y la emergencia de un cuestionamiento de la sociedad al funcionamiento de los Estados y la estructura supranacional.

  2. La Unión Europea, en el camino haica una Comunidad de Derecho Constitucional

    Directory of Open Access Journals (Sweden)

    Klaus Stern

    2007-08-01

    Full Text Available En este trabajo se aborda, en primer lugar, un resumen de los principales pasos en el proceso de integración europea, subrayando los aspectos más relevantes desde el punto de vista del Derecho Constitucional. Se detiene especialmente en el análisis de la Carta de Derechos Fundamentales de la Unión Europea, y posteriormente en el proceso frustrado de ratificación del Tratado por el que se establece una Constitución para Europa. El autor sugiere una serie de alternativas para que pueda seguir avanzándose en la integración, y sostiene que Europa ya es una Comunidad de Derecho Constitucional.

  3. La titularidad el permiso de maternidad en la Unión Europea

    Directory of Open Access Journals (Sweden)

    Pérez Campos, Ana Isabel

    2014-03-01

    Full Text Available La configuración de los derechos de conciliación provoca dudas razonables acerca de su compatibilidad con los principios de igualdad y no discriminación, y ha obligado a cambios recientes en los últimos años gracias a la interpretación del Tribunal de Justicia de la Unión Europea. Las medidas adoptadas han resultado ser insuficientes o inadecuadas. Desde hace algunos años, el legislador comunitario viene sometiendo a un proceso de cambios a las normas comunitarias que inciden en la conciliación de la vida laboral, familiar y personal, como es la corresponsabilidad en las cargas familiares. No obstante, a día de hoy, el engranaje jurídico que ha resultado de su trabajo no sirve adecuadamente a su objetivo de poner fin a las deficiencias generadas por la normativa comunitaria.

  4. A união do vegetal e o transe mediúnico no Brasil

    Directory of Open Access Journals (Sweden)

    Rosa Melo

    2011-01-01

    Full Text Available Este artigo discute a elaboração simbólica do transe no Centro Espírita Beneficente União do Vegetal. Por meio da análise comparativa com o Santo Daime, interrogo os modos de constituição do contato com o sobrenatural em ambos os grupos, articulando-os às representações hierarquicamente ordenadas de forças que aí incidem e impelem o sujeito à ação no mundo. Proponho pensar o transe ayahuasqueiro em diálogo com os estudos dos cultos mediúnicos no Brasil, chamando a atenção para a dimensão da modernidade nesse campo, onde um projeto de interioridade caminha ao lado dos "ensinamentos do Mestre".

  5. Transitions of interaction outcomes in a uni-directional consumer-resource system

    Science.gov (United States)

    Wang, Y.; DeAngelis, D.L.

    2011-01-01

    A uni-directional consumer-resource system of two species is analyzed. Our aim is to understand the mechanisms that determine how the interaction outcomes depend on the context of the interaction; that is, on the model parameters. The dynamic behavior of the model is described and, in particular, it is demonstrated that no periodic orbits exist. Then the parameter (factor) space is shown to be divided into four regions, which correspond to the four forms of interaction outcomes; i.e. mutualism, commensalism, parasitism and amensalism. It is shown that the interaction outcomes of the system transition smoothly among these four forms when the parameters of the system are varied continuously. Varying each parameter individually or varying pairs of parameters can also lead to smooth transitions between the interaction outcomes. The analysis leads to both conditions for which each species achieves its maximal density, and situations in which periodic oscillations of the interaction outcomes emerge. ?? 2011 Elsevier Ltd.

  6. Pressure-induced phase transitions in single-crystalline Cu4Bi4S9 nanoribbons

    International Nuclear Information System (INIS)

    Hu Jing-Yu; Li Jing; Zhao Qing; Shi Li-Jie; Zou Bing-Suo; Zhang Si-Jia; Zhao Hao-Fei; Zhang Qing-Hua; Yao Yuan; Zhu Ke; Liu Yu-Long; Jin Chang-Qing; Yu Ri-Cheng; Li Yan-Chun; Li Xiao-Dong; Liu Jing

    2013-01-01

    In situ angle dispersive synchrotron X-ray diffraction and Raman scattering measurements under pressure are employed to study the structural evolution of Cu 4 Bi 4 S 9 nanoribbons, which are fabricated by using a facile solvothermal method. Both experiments show that a structural phase transition occurs near 14.5 GPa, and there is a pressure-induced reversible amorphization at about 25.6 GPa. The electrical transport property of a single Cu 4 Bi 4 S 9 nanoribbon under different pressures is also investigated

  7. Extraction and Production of Omega-3 from UniMAP Puyu (Jade Perch) and Mackarel

    Science.gov (United States)

    Nur Izzati, I.; Zainab, H.; Nornadhiratulhusna, M.; Chee Hann, Y.; Khairunissa Syairah, A. S.; Amira Farzana, S.

    2018-03-01

    Extraction techniques to extract fish oil from various types of fish are numerous but not widely accepted because of the use of chemicals that may be harmful to health. In this study, fish oil is extracted using a technique of Microwave-Assisted Extraction, which uses only water. The optimum conditions required for the production of fish oil for extraction is carried out by examining three parameters such as microwave power (300-700W), extraction time (10-30 min) and amount of water used (70-190ml). Optimum conditions were determined after using design of experiments (DOE). The optimum condition obtained was 300 W for microwave power, 10 minutes extraction time and 190 milliliter amounts of water used. Fourier transform infrared spectroscopy (FTIR) was used to analyze the functional groups of fish oil. Two types of fish such as Jade Perch or UniMAP Puyu and Indian Mackerel were used. A standard omega-3 oil sample (Blackmores) purchased from pharmacy was also determined to confirm the presence of omega-3 oil in these fishes. Similar compounds were present in Jade Perch and Indian Mackerel as compared to the standard. Therefore, there were presence of omega-3 fish oil in the two types of fish. From this study, omega-3 in UniMAP Puyu fish was higher compared to Indian Mackerel fish. However, based on the FTIR analysis, besides the presence of omega-3, the two fishes also contain other functional groups such as alkanes, alkenes, aldehyde, ketones and many others. The yield of fish oil for the Jade Perch was low compared to Indian Mackerel which was 9% while Indian Mackerel was 10 %.

  8. Magnetic field effects in UNi.sub.1/3./sub.Ru.sub.2/3./sub.Al

    Czech Academy of Sciences Publication Activity Database

    Alsmadi, A. M.; El-Khatib, S.; de Chatel, P.F.; Nakotte, H.; Lacerda, A. H.; Jung, M. H.; Andreev, Alexander V.; Honda, F.; Sechovský, V.

    2005-01-01

    Roč. 97, - (2005), 10A919/1-10A919/3 ISSN 0021-8979 R&D Projects: GA ČR(CZ) GA202/02/0739 Keywords : UNi 1/3 Ru 2/3 Al * magnetic field effects Subject RIV: BM - Solid Matter Physics ; Magnetism Impact factor: 2.498, year: 2005

  9. 78 FR 4879 - Nine Mile Point 3 Nuclear Project, LLC and UniStar Nuclear Operating Services, LLC Combined...

    Science.gov (United States)

    2013-01-23

    ... Analysis Report (FSAR). On December 1, 2009, UniStar Nuclear Energy (UNE), acting on behalf of the COL... Exclusion From Environmental Review With respect to the exemption's impact on the quality of the human... relation to security issues. Therefore, the common defense and security is not impacted by this exemption...

  10. UniCredit Bank Eesti juht: Meie võimalused on Venemaal ja Euroopas, mitte Hiinas / Taavi Laur

    Index Scriptorium Estoniae

    Laur, Taavi

    2010-01-01

    UniCredit Bank Eesti juht vastab küsimustele, kas kriis tõi Eesti majanduses kaasa struktuurimuutuse, mis on praegu ettevõtjatele suurim väljakutse, kas Eesti võiks olla Euroopa ja Venemaa vaheline transiidimaa

  11. The Employer Perspective on Sustainable Employability in the Construction Industry

    NARCIS (Netherlands)

    Tonnon, Susanne C; van der Veen, Rozan; Westerman, Marjan J; Robroek, Suzan J W; van der Ploeg, Hidde P; Van Der Beek, Allard J.; Proper, Karin I.

    OBJECTIVE: To determine the measures employers in the construction industry take to promote sustainable employability, the barriers and facilitators that influence implementation and employer needs. METHODS: Questionnaire among 499 employers and interviews with 17 employers. RESULTS: Employers

  12. New measurement of neutron capture resonances of 209Bi

    CERN Document Server

    Domingo-Pardo, C.; Aerts, G.; Alvarez-Pol, H.; Alvarez-Velarde, F.; Andriamonje, S.; Andrzejewski, J.; Assimakopoulos, P.; Audouin, L.; Badurek, G.; Baumann, P.; Becvar, F.; Berthoumieux, E.; Calvino, F.; Cano-Ott, D.; Capote, R.; Carrillode Albornoz, A.; Cennini, P.; Chepel, V.; Chiaveri, E.; Colonna, N.; Cortes, G.; Couture, A.; Cox, J.; Dahlfors, M.; David, S.; Dillman, I.; Dolfini, R.; Dridi, W.; Duran, I.; Eleftheriadis, C.; Embid-Segura, M.; Ferrant, L.; Ferrari, A.; Ferreira-Marques, R.; Fitzpatrick, L.; Frais-Koelbl, H.; Fujii, K.; Furman, W.; Gallino, R.; Goncalves, I.; Gonzalez-Romero, E.; Goverdovski, A.; Gramegna, F.; Griesmayer, E.; Guerrero, C.; Gunsing, F.; Haas, B.; Haight, R.; Heil, M.; Herrera-Martinez, A.; Igashira, M.; Isaev, S.; Jericha, E.; Kadi, Y.; Kappeler, F.; Karamanis, D.; Karadimos, D.; Kerveno, M.; Ketlerov, V.; Koehler, P.; Konovalov, V.; Kossionides, E.; Krticka, M.; Lamboudis, C.; Leeb, H.; Lindote, A.; Lopes, I.; Lozano, M.; Lukic, S.; Marganiec, J.; Marques, L.; Marrone, S.; Mastinu, P.; Mengoni, A.; Milazzo, P.M.; Moreau, C.; Mosconi, M.; Neves, F.; Oberhummer, H.; Oshima, M.; O'Brien, S.; Pancin, J.; Papachristodoulou, C.; Papadopoulos, C.; Paradela, C.; Patronis, N.; Pavlik, A.; Pavlopoulos, P.; Perrot, L.; Plag, R.; Plompen, A.; Plukis, A.; Poch, A.; Pretel, C.; Quesada, J.; Rauscher, T.; Reifarth, R.; Rosetti, M.; Rubbia, C.; Rudolf, G.; Rullhusen, P.; Salgado, J.; Sarchiapone, L.; Savvidis, I.; Stephan, C.; Tagliente, G.; Tain, J.L.; Tassan-Got, L.; Tavora, L.; Terlizzi, R.; Vannini, G.; Vaz, P.; Ventura, Alberto; Villamarin, D.; Vincente, M.C.; Vlachoudis, V.; Vlastou, R.; Voss, F.; Walter, S.; Wendler, H.; Wiescher, M.; Wisshak, K.

    2006-01-01

    The neutron capture cross section of Bi209 has been measured at the CERN n TOF facility by employing the pulse-height-weighting technique. Improvements over previous measurements are mainly because of an optimized detection system, which led to a practically negligible neutron sensitivity. Additional experimental sources of systematic error, such as the electronic threshold in the detectors, summing of gamma-rays, internal electron conversion, and the isomeric state in bismuth, have been taken into account. Gamma-ray absorption effects inside the sample have been corrected by employing a nonpolynomial weighting function. Because Bi209 is the last stable isotope in the reaction path of the stellar s-process, the Maxwellian averaged capture cross section is important for the recycling of the reaction flow by alpha-decays. In the relevant stellar range of thermal energies between kT=5 and 8 keV our new capture rate is about 16% higher than the presently accepted value used for nucleosynthesis calculations. At th...

  13. Superstrengthening Bi2Te3 through Nanotwinning

    Science.gov (United States)

    Li, Guodong; Aydemir, Umut; Morozov, Sergey I.; Wood, Max; An, Qi; Zhai, Pengcheng; Zhang, Qingjie; Goddard, William A.; Snyder, G. Jeffrey

    2017-08-01

    Bismuth telluride (Bi2Te3 ) based thermoelectric (TE) materials have been commercialized successfully as solid-state power generators, but their low mechanical strength suggests that these materials may not be reliable for long-term use in TE devices. Here we use density functional theory to show that the ideal shear strength of Bi2Te3 can be significantly enhanced up to 215% by imposing nanoscale twins. We reveal that the origin of the low strength in single crystalline Bi2Te3 is the weak van der Waals interaction between the Te1 coupling two Te 1 - Bi - Te 2 - Bi - Te 1 five-layer quint substructures. However, we demonstrate here a surprising result that forming twin boundaries between the Te1 atoms of adjacent quints greatly strengthens the interaction between them, leading to a tripling of the ideal shear strength in nanotwinned Bi2Te3 (0.6 GPa) compared to that in the single crystalline material (0.19 GPa). This grain boundary engineering strategy opens a new pathway for designing robust Bi2Te3 TE semiconductors for high-performance TE devices.

  14. Perspectives of employability skills

    OpenAIRE

    ANNE LOUISE NEWTON

    2017-01-01

    The study investigated the different perspectives held by young people, employers and policy makers around Employability Skills and it examined how young people learnt these skills. This study draws young peoples’ perspectives into the research around Employability Skills and highlights the way in which social and cultural capital mediate their development. The research points to a model to re-vision employability skills which recognises the many ways in which they are learnt, over time a...

  15. TOOL ASSEMBLY WITH BI-DIRECTIONAL BEARING

    Science.gov (United States)

    Longhurst, G.E.

    1961-07-11

    A two-direction motion bearing which is incorporated in a refueling nuclear fuel element trsnsfer tool assembly is described. A plurality of bi- directional bearing assembliesare fixed equi-distantly about the circumference of the transfer tool assembly to provide the tool assembly with a bearing surface- for both axial and rotational motion. Each bi-directional bearing assembly contains a plurality of circumferentially bulged rollers mounted in a unique arrangement which will provide a bearing surface for rotational movement of the tool assembly within a bore. The bi-direc tional bearing assembly itself is capable of rational motion and thus provides for longitudinal movement of the tool assembly.

  16. BiDil: from another vantage point.

    Science.gov (United States)

    Puckrein, Gary

    2006-01-01

    In a recent Health Affairs Web Exclusive, Pamela Sankar and Jonathan Kahn argue against the Food and Drug Administration's approval of BiDil as a new drug for the treatment of heart failure in African Americans. Their paper questions the existence of disparities between African American and other heart-failure patients and the motivations of BiDil's developers and manufacturer. The disparities are confirmed and persistent, however, and BiDil's effectiveness is proven. If the authors' logic were to prevail, patients would be denied life-saving therapy. Continued investigation will likely narrow identification of patients who will benefit.

  17. Youth employment in Egypt

    OpenAIRE

    Eekelen, Willem van; De Luca, Loretta; Ismail, Magwa

    2001-01-01

    Examines economic and social factors affecting youth employment in Egypt and describes three national programmes for the promotion of youth employment based on human resources development, direct job creation and support in self-employment and enterprise creation. Describes one public-private project in each case.

  18. Employment in Agribusiness.

    Science.gov (United States)

    Hilgenberg, Gene; Huston, Jane

    This curriculum guide is intended to assist persons teaching a course in employment in agribusiness. Addressed in the individual units of instruction are the following topics: employment information (training plans/agreements and wages, taxes, and fringe benefits); human relations (employer/employee/customer relations and communication skills);…

  19. Social innovation in employment

    NARCIS (Netherlands)

    Oeij, P.R.A.; Torre, W. van der; Santoclides, M.E

    2017-01-01

    This policy brief on Social Innovation of Employment informs on an inventory of challenges and policy recommendations based on the Case Study Report of Employment and on the Second Policy Foresight Workshop of Employment. A ‘paradigm shift’ is needed in the mind-set of policymakers. ‘Traditional’

  20. Preparation, characterization and enhanced visible-light photocatalytic activities of BiPO4/BiVO4 composites

    International Nuclear Information System (INIS)

    Wu, Siyuan; Zheng, Hong; Lian, Youwei; Wu, Yiying

    2013-01-01

    Graphical abstract: - Highlights: • BiPO 4 /BiVO 4 composites were successfully prepared by the hydrothermal method. • BiPO 4 /BiVO 4 composites exhibited broad absorption in the visible region. • Visible-light photocatalytic activities of BiPO 4 /BiVO 4 composites were enhanced. • P/V molar ratio and pH value of the reaction affect photocatalytic activity. • The mechanism of enhanced visible-light photocatalytic activities was discussed. - Abstract: BiPO 4 /BiVO 4 composites with different P/V molar ratios were prepared by the hydrothermal method and the effect of pH values of hydrothermal reaction on photocatalytic activity of BiPO 4 /BiVO 4 composite was investigated. The photocatalysts were characterized by X-ray diffraction, field emission scanning electron microscopy, energy-dispersive spectroscopy, X-ray photoelectron spectroscopy and UV–vis diffuse reflectance spectroscopy. The photocatalytic property of BiPO 4 /BiVO 4 was evaluated by photocatalytic degradation of Methylene blue under visible light irradiation. The results showed that the photocatalytic activity of the composites was much higher than that of pure BiPO 4 and BiVO 4 . The rate constant of Methylene blue degradation over BiPO 4 /BiVO 4 (P/V molar ratio of 5:1 and hydrothermal reaction pH value of 1.5) is 1.7 times that of pure BiVO 4 . The photocatalytic activity enhancement of BiPO 4 /BiVO 4 composite is closely related to the BiVO 4 functioning as a sensitizer to adsorb visible light and the heterojunction of BiPO 4 /BiVO 4 acting as an active center for hindering the rapid recombination of electron–hole pairs during the photocatalytic reaction

  1. Simple BiCMOS CCCTA design and resistorless analog function realization.

    Science.gov (United States)

    Tangsrirat, Worapong

    2014-01-01

    The simple realization of the current-controlled conveyor transconductance amplifier (CCCTA) in BiCMOS technology is introduced. The proposed BiCMOS CCCTA realization is based on the use of differential pair and basic current mirror, which results in simple structure. Its characteristics, that is, parasitic resistance (R x) and current transfer (i o/i z), are also tunable electronically by external bias currents. The realized circuit is suitable for fabrication using standard 0.35 μm BiCMOS technology. Some simple and compact resistorless applications employing the proposed CCCTA as active elements are also suggested, which show that their circuit characteristics with electronic controllability are obtained. PSPICE simulation results demonstrating the circuit behaviors and confirming the theoretical analysis are performed.

  2. Simple BiCMOS CCCTA Design and Resistorless Analog Function Realization

    Directory of Open Access Journals (Sweden)

    Worapong Tangsrirat

    2014-01-01

    Full Text Available The simple realization of the current-controlled conveyor transconductance amplifier (CCCTA in BiCMOS technology is introduced. The proposed BiCMOS CCCTA realization is based on the use of differential pair and basic current mirror, which results in simple structure. Its characteristics, that is, parasitic resistance (Rx and current transfer (io/iz, are also tunable electronically by external bias currents. The realized circuit is suitable for fabrication using standard 0.35 μm BiCMOS technology. Some simple and compact resistorless applications employing the proposed CCCTA as active elements are also suggested, which show that their circuit characteristics with electronic controllability are obtained. PSPICE simulation results demonstrating the circuit behaviors and confirming the theoretical analysis are performed.

  3. On the bi-orthogonality conditions for multi-modal elastic waveguides

    DEFF Research Database (Denmark)

    Sorokin, Sergey

    2013-01-01

    The bi-orthogomality conditions in terms of generalised forces and displacements are derived from the reciprocity relations for a hierarchy of elastic waveguides, which support several travelling and evanescent modes (free waves). In the simple cases of waves in a straight beam and axisymmetric...... waves in a thin elastic cylindrical shell, these conditions are formulated as identities in an explicit form via wavenumbers. The forced vibrations of these waveguides under localised excitation are also considered with these identities being employed. The bi-orthogonality conditions in more advanced...... cases, specifically, for non-axisymmetric waves in an elastic cylindrical shell and for waves in an elastic helical spring, are derived, but not presented in an explicit form via wavenumbers. The results obtained for the hierarchy of waveguides are discussed in view of the classical bi...

  4. Thermodynamic properties of the liquid Bi-Cu-Sn lead-free solder alloys

    Directory of Open Access Journals (Sweden)

    Kopyto M.

    2009-01-01

    Full Text Available The electromotive force measurement method was employed to determine the thermodynamic properties of liquid Bi-Cu-Sn alloys using solid electrolyte galvanic cells as shown below: Kanthal+Re, Bi-Cu-Sn, SnO2 | Yttria Stabilized Zirconia | air, Pt, Po2=0.2:1 atm Measurements were carried out for three cross-sections with constant Bi/Cu ratio equal to: 1/3, 1 and 3 and for various tin content varying every 10%, resulting in a total of 26 different alloy compositions. The temperature of the measurements varied within the range from 973 to 1325 K. A linear dependence of the e.m.f. on temperature was observed for all alloy compositions and the appropriate line equations were derived. Tin activities were calculated as function of composition and temperature. Results were presented in tables and figures.

  5. Luminescence of Bi3+ ions in Y3Al5O12:Bi single crystalline films

    International Nuclear Information System (INIS)

    Zorenko, Yu.; Gorbenko, V.; Voznyak, T.; Vistovsky, V.; Nedilko, S.; Nikl, M.

    2007-01-01

    The absorption and cathodoluminescence spectra of single crystalline films (SCF) of Y 3 Al 5 O 12 :Bi garnet depending on Bi concentration were analyzed. For consideration of the nature of the UV and visible Bi-related emission bands the time-resolved luminescence of Bi 3+ (ns 2 ) ions in YAG:Bi SCF was studied at 10 K under excitation by synchrotron radiation. The difference in the excitation spectra and emission decay of the UV and visible bands has been explained via radiative relaxation from the 3 P 1,0 excited states to the 1 S 0 ground state of the isolated and pair/clustered Bi 3+ emission centers in the garnet lattice, respectively

  6. Exploratory Bi-Factor Analysis: The Oblique Case

    Science.gov (United States)

    Jennrich, Robert I.; Bentler, Peter M.

    2012-01-01

    Bi-factor analysis is a form of confirmatory factor analysis originally introduced by Holzinger and Swineford ("Psychometrika" 47:41-54, 1937). The bi-factor model has a general factor, a number of group factors, and an explicit bi-factor structure. Jennrich and Bentler ("Psychometrika" 76:537-549, 2011) introduced an exploratory form of bi-factor…

  7. Employers Roundtable: Employer Supported Child Care.

    Science.gov (United States)

    Delaware Valley Child Care Council, Philadelphia, PA.

    This booklet outlines a number of options available to employers to enable them to better cope with child care issues that they and their employees face. Major options include: (1) flexible work policies, such as flexible scheduling, alternate work places, shorter work weeks, and the consolidating of sick leave, holidays, and vacation time into…

  8. In-line production of a bi-circular field for generation of helically polarized high-order harmonics

    Energy Technology Data Exchange (ETDEWEB)

    Kfir, Ofer, E-mail: ofertx@technion.ac.il, E-mail: oren@si.technion.ac.il; Bordo, Eliyahu; Ilan Haham, Gil; Lahav, Oren; Cohen, Oren, E-mail: ofertx@technion.ac.il, E-mail: oren@si.technion.ac.il [Solid State Institute and Physics Department, Technion, Haifa 32000 (Israel); Fleischer, Avner [Solid State Institute and Physics Department, Technion, Haifa 32000 (Israel); Department of Physics and Optical Engineering, Ort Braude College, Karmiel 21982 (Israel)

    2016-05-23

    The recent demonstration of bright circularly polarized high-order harmonics of a bi-circular pump field gave rise to new opportunities in ultrafast chiral science. In previous works, the required nontrivial bi-circular pump field was produced using a relatively complicated and sensitive Mach-Zehnder-like interferometer. We propose a compact and stable in-line apparatus for converting a quasi-monochromatic linearly polarized ultrashort driving laser field into a bi-circular field and employ it for generation of helically polarized high-harmonics. Furthermore, utilizing the apparatus for a spectroscopic spin-mixing measurement, we identify the photon spins of the bi-circular weak component field that are annihilated during the high harmonics process.

  9. Bi-induced band gap reduction in epitaxial InSbBi alloys

    Energy Technology Data Exchange (ETDEWEB)

    Rajpalke, M. K.; Linhart, W. M.; Birkett, M.; Alaria, J.; Veal, T. D., E-mail: T.Veal@liverpool.ac.uk [Stephenson Institute for Renewable Energy and Department of Physics, School of Physical Sciences, University of Liverpool, Liverpool L69 7ZF (United Kingdom); Yu, K. M. [Materials Sciences Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, California 94720 (United States); Bomphrey, J. J.; Jones, T. S.; Ashwin, M. J., E-mail: M.J.Ashwin@warwick.ac.uk [Department of Chemistry, University of Warwick, Coventry CV4 7AL (United Kingdom); Sallis, S.; Piper, L. F. J. [Materials Science and Engineering, Binghamton University, Binghamton, New York 13902 (United States)

    2014-11-24

    The properties of molecular beam epitaxy-grown InSb{sub 1−x}Bi{sub x} alloys are investigated. Rutherford backscattering spectrometry shows that the Bi content increases from 0.6% for growth at 350 °C to 2.4% at 200 °C. X-ray diffraction indicates Bi-induced lattice dilation and suggests a zinc-blende InBi lattice parameter of 6.626 Å. Scanning electron microscopy reveals surface InSbBi nanostructures on the InSbBi films for the lowest growth temperatures, Bi droplets at intermediate temperatures, and smooth surfaces for the highest temperature. The room temperature optical absorption edge was found to change from 172 meV (7.2 μm) for InSb to ∼88 meV (14.1 μm) for InSb{sub 0.976}Bi{sub 0.024}, a reduction of ∼35 meV/%Bi.

  10. Demonstration of surface transport in a hybrid Bi2Se3/Bi2Te3 heterostructure

    OpenAIRE

    Zhao, Yanfei; Chang, Cui-Zu; Jiang, Ying; DaSilva, Ashley; Sun, Yi; Wang, Huichao; Xing, Ying; Wang, Yong; He, Ke; Ma, Xucun; Xue, Qi-Kun; Wang, Jian

    2013-01-01

    In spite of much work on topological insulators (TIs), systematic experiments for TI/TI heterostructures remain absent. We grow a high quality heterostructure containing single quintuple layer (QL) of Bi2Se3 on 19 QLs of Bi2Te3 and compare its transport properties with 20 QLs Bi2Se3 and 20 QLs Bi2Te3. All three films are grown on insulating sapphire (0001) substrates by molecular beam epitaxy (MBE). In situ angle-resolved photoemission spectroscopy (ARPES) provides direct evidence that the su...

  11. Quarterly, Bi-annual and Annual Reports

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The Quarterly, Bi-annual and Annual Reports are periodic reports issued for public release. For the deep set fishery these reports are issued quarterly and anually....

  12. Calorimetric investigation of Pb-Bi system

    International Nuclear Information System (INIS)

    Agarwal, Renu; Jat, Ram Avtar; Sen, B.K.

    2008-01-01

    Enthalpy increment of Pb 0.71 Bi 0.29 compound was determined using high temperature Calvet calorimeter. The data was fit into the following polynomial equation. ΔH(T-298.15 K) J/mol = -10384.96 + 39.23 T - 0.014T 2 - 18970/T. By precipitation method, the enthalpy of formation of the compound of composition Pb 0.68 Bi 0.32 at 448 K, from Pb(l) and Bi(l) was determined to be -2450± 50 J/mol and from Pb(s) and Bi(s) at 298.15 K was calculated to be 4047 J/mol. (author)

  13. Influence of photoinduced Bi-related self-doping on the photocatalytic activity of BiOBr nanosheets

    Energy Technology Data Exchange (ETDEWEB)

    Wu, Dan [School of Life Sciences, The Chinese University of Hong Kong, Shatin, NT, Hong Kong SAR (China); Yue, Songtao; Wang, Wei [College of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074 (China); An, Tiacheng, E-mail: antc99@gig.ac.cn [Institute of Environmental Health and Pollution Control, School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006 (China); Li, Guiying [Institute of Environmental Health and Pollution Control, School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006 (China); Ye, Liqun [School of Life Sciences, The Chinese University of Hong Kong, Shatin, NT, Hong Kong SAR (China); College of Chemistry and Pharmaceutical Engineering, Nanyang Normal University, Nanyang 473061 (China); Yip, Ho Yin [School of Life Sciences, The Chinese University of Hong Kong, Shatin, NT, Hong Kong SAR (China); Wong, Po Keung, E-mail: pkwong@cuhk.edu.hk [School of Life Sciences, The Chinese University of Hong Kong, Shatin, NT, Hong Kong SAR (China)

    2017-01-01

    Highlights: • Bi{sup 5+} self-doped BiOBr nanosheets are achieved under UV irradiation. • Bi{sup 5+} is formed due to the oxidation of surface Bi{sup 3+} by photoexcited h{sup +} of BiOBr. • Two photoinduced h{sup +} mediated oxidation processes happen simultaneously. • Self-doped BiOBr is superior in phenol degradation and bacterial inactivation. • Bi{sup 5+} electron trapping induced photocatalytic enhancement mechanism is proposed. - Abstract: Under UV irradiation, self-doped Bi{sup 5+} is evidenced to be generated on the surface of BiOBr nanosheets, but with well-preserved crystal structure and morphology compared with pure counterpart. Bi{sup 5+} self-doping BiOBr (BiOBr-4) exhibits distinct photocatalytic mode for dyes degradation, as compared with pure BiOBr nanosheets. These photodegradation distinctions are mainly due to the simultaneous occurrence of two photoinduced hole (h{sup +}) mediated oxidation processes on the BiOBr surfaces: (1) a portion of photoexcited h{sup +} participates in the photocatalytic oxidation of dyes, and (2) partial h{sup +} involves the oxidation of Bi{sup 3+} to Bi{sup 5+}. Notably, BiOBr-4 nanosheets comparatively show superior photocatalytic activity for the phenol decomposition as well as the bacterial inactivation. Besides Bi{sup 5+} induced narrowed bandgap and enhanced light adsorption capacity, significantly, the oxidative Bi{sup 5+} acts as electron traps to promote the photoexcited electron-hole separation and accelerate h{sup +} migration, resulting in the considerable photocatalytic enhancement of BiOBr-4 nanosheets. These novel findings will not only give new insights into the photocatalytic mechanism but also explore new route to enhance photocatalytic performance of Bi-based materials.

  14. CaO-matrix processing of MnBi alloys for permanent magnets

    Directory of Open Access Journals (Sweden)

    A. M. Gabay

    2017-05-01

    Full Text Available The possibility to suppress agglomeration of MnBi alloy particles during milling and their unwanted sintering during subsequent annealing was explored by embedding the particles in CaO through co-milling. A 15 h annealing of the micron-sized MnBi particles embedded in the CaO matrix at 300 °C is not accompanied by sintering or growth of the particles while it significantly increases their coercivity – presumably by healing the milling-induced crystal defects. After separation from the CaO matrix, the annealed MnBi powder combines a calculated energy product of 10 MGOe with a room-temperature coercivity of 14.4 kOe. At the same time, the partial loss and degradation of the MnBi low-temperature phase during warm compaction of the powders makes the effect of the CaO-matrix annealing less pronounced in the case of fully dense magnets; the residue from the solvents employed for the removal of the CaO might have contributed to the decline of the properties. Still, a relatively high room-temperature coercivity of 8.5 kOe was obtained for the fuslly-dense MnBi magnet exhibiting an energy product of 5.3 MGOe.

  15. Metaheuristics for bi-level optimization

    CERN Document Server

    2013-01-01

    This book provides a complete background on metaheuristics to solve complex bi-level optimization problems (continuous/discrete, mono-objective/multi-objective) in a diverse range of application domains. Readers learn to solve large scale bi-level optimization problems by efficiently combining metaheuristics with complementary metaheuristics and mathematical programming approaches. Numerous real-world examples of problems demonstrate how metaheuristics are applied in such fields as networks, logistics and transportation, engineering design, finance and security.

  16. BiCaSrCuO superconductors

    International Nuclear Information System (INIS)

    Polvi, V.M.; Niemi, K.J.

    1989-01-01

    BiCaSrCuO and BiPbCaSrCuO powders have been synthesized. Different research methods (SEM,EDS,XRF,SRD,DTA) have been used to characterize the bulk specimen and wires. Resistance and current density measured as a function of temperature are reported. The ceramic products contained several phases. Lead containing specimen gave the best results and the synthesis was easily reproducible

  17. BiP Negatively Affects Ricin Transport

    Directory of Open Access Journals (Sweden)

    Kirsten Sandvig

    2013-05-01

    Full Text Available The AB plant toxin ricin binds both glycoproteins and glycolipids at the cell surface via its B subunit. After binding, ricin is endocytosed and then transported retrogradely through the Golgi to the endoplasmic reticulum (ER. In the ER, the A subunit is retrotranslocated to the cytosol in a chaperone-dependent process, which is not fully explored. Recently two separate siRNA screens have demonstrated that ER chaperones have implications for ricin toxicity. ER associated degradation (ERAD involves translocation of misfolded proteins from ER to cytosol and it is conceivable that protein toxins exploit this pathway. The ER chaperone BiP is an important ER regulator and has been implicated in toxicity mediated by cholera and Shiga toxin. In this study, we have investigated the role of BiP in ricin translocation to the cytosol. We first show that overexpression of BiP inhibited ricin translocation and protected cells against the toxin. Furthermore, shRNA-mediated depletion of BiP enhanced toxin translocation resulting in increased cytotoxicity. BiP-dependent inhibition of ricin toxicity was independent of ER stress. Our findings suggest that in contrast to what was shown with the Shiga toxin, the presence of BiP does not facilitate, but rather inhibits the entry of ricin into the cytosol.

  18. Microwave synthesis and electrochemical characterization of mesoporous carbon@Bi{sub 2}O{sub 3} composites

    Energy Technology Data Exchange (ETDEWEB)

    Xia, Nannan [Department of Chemistry and Institute of Nanochemistry, Jinan University, Guangzhou 510632 (China); Yuan, Dingsheng, E-mail: tydsh@jnu.edu.cn [Department of Chemistry and Institute of Nanochemistry, Jinan University, Guangzhou 510632 (China); Zhou, Tianxiang; Chen, Jingxing; Mo, Shanshan; Liu, Yingliang [Department of Chemistry and Institute of Nanochemistry, Jinan University, Guangzhou 510632 (China)

    2011-05-15

    Graphical abstract: An efficient and quick microwave method has been employed to prepare worm-like mesoporous carbon@Bi{sub 2}O{sub 3} composites for the first time. The electrochemical measurement shows the worm-like mesoporous carbon@Bi{sub 2}O{sub 3} composites exhibits excellent capacitance performance and the maximum specific capacitance is up to 386 F g{sup -1}. Research highlights: {yields} An efficient and quick microwave method has been employed. {yields} A worm-like mesoporous carbon@Bi{sub 2}O{sub 3} composites have been successfully prepared. {yields} This composite exhibits excellent capacitance performance. {yields} This composite could be a potential electrode material for the supercapacitors. -- Abstract: An efficient and quick microwave method has been employed to prepare worm-like mesoporous carbon@Bi{sub 2}O{sub 3} composites for the first time. As-prepared products have been characterized by X-ray diffraction, N{sub 2} adsorption-desorption, scanning electron microscopy, transmission electron microscopy and inductive coupled plasma atomic emission spectroscopy. The electrochemical measurement shows the worm-like mesoporous carbon@Bi{sub 2}O{sub 3} composites exhibits excellent capacitance performance and the maximum specific capacitance reaches 386 F g{sup -1}, three times more than the pure worm-like mesoporous carbon.

  19. Information Literacy and Employability

    OpenAIRE

    O'Keeffe, Colin

    2016-01-01

    Information Literacy (IL) and its relationship to third level graduates’ employability has gained more attention in recent years. This article examines how IL has evolved from skills initially associated with academic libraries into a key workplace skill set of the knowledge economy. It outlines the challenges interviewees encounter when selling IL to employers, how IL can be utilised when preparing for upcoming interviews and suggests a distinction between workplace IL and employability IL. ...

  20. Proceso de unión de insertos de carburo tungsteno en la fabricación de herramientas de corte individualizadas

    OpenAIRE

    Estupiñán Camargo, John Alexánder

    2013-01-01

    En la fabricación de herramientas de corte para mecanizar materiales en condiciones adversas de corte se requiere que el sistema de sujeción del inserto de carburo de tungsteno mantenga la integridad y robustez durante el corte. El proceso de unión por soldadura fuerte (brazing) permite la unión de insertos de carburo de tungsteno con portaherramientas del acero al medio carbono debido a que estos no compartan las mismas propiedades físico-químicas; esta unión de materiales cerámicos co...

  1. Drug use, family support and related factors in university students. A cross-sectional study based on the uniHcos Project data.

    Science.gov (United States)

    Arias-De la Torre, Jorge; Fernández-Villa, Tania; Molina, Antonio José; Amezcua-Prieto, Carmen; Mateos, Ramona; Cancela, José María; Delgado-Rodríguez, Miguel; Ortíz-Moncada, Rocío; Alguacil, Juan; Almaraz, Ana; Gómez-Acebo, Inés; Suárez-Varela, María Morales; Blázquez-Abellán, Gemma; Jiménez-Mejías, Eladio; Valero, Luis Félix; Ayán, Carlos; Vilorio-Marqués, Laura; Olmedo-Requena, Rocío; Martín, Vicente

    2018-01-09

    To assess the prevalence of illegal drug use in college students on any previous occasion, during the previous year and the previous month, and to analyze the relationship between illegal drug use and family support and other factors. A cross-sectional study using data from students participating in the uniHcos project (n = 3767) was conducted. The prevalence and age of onset of consumption of cannabis, non-prescription sedatives, stimulants and depressants was evaluated. Polyconsumption was also assessed. The independent variables were: family support, age, residence, and employment status. To determine the factors related to drug use multivariate logistic regression models stratified by gender were fitted. Differences between men and women in prevalence of illegal drug use except non-prescription sedatives were observed. In both genders, less family support was associated with higher consumption of all drugs, except depressants, and with polyconsumption. To be studying and looking for work was related to cannabis and stimulant use and to polyconsumption among women, but only to cannabis use among men. These results support the notion that the start of university studies is a particularly relevant stage in the onset of illegal drug use and its prevention, and that consumption may be especially associated with family support. Copyright © 2017 SESPAS. Publicado por Elsevier España, S.L.U. All rights reserved.

  2. Pion-induced fission of 209Bi and 119Sn: measurements, calculations, analyses and comparison

    International Nuclear Information System (INIS)

    Rana, M.A.; Sher, G.; Manzoor, S.; Shehzad, M.I.

    2011-01-01

    Cross-sections for the π - -induced fission of 209 Bi and 119 Sn have been measured using the most sensitive CR-39 solid-state nuclear track detector. In experiments, target–detector stacks were exposed to negative pions of energy 500, 672, 1068, and 1665 MeV at the Brookhaven National Laboratory, USA. An important aspect of the present paper is the comparison of pion-induced fission fragment spectra of above mentioned nuclei with the spontaneous fission fragment spectra of 252 Cf. This comparison is made in terms of fission fragment track lengths in the CR-39 detectors. Measurement results are compared with calculations of Monte Carlo and statistical weight functions methods using the computer code CEM95. Agreement between measurements and calculations is fairly good for 209 Bi target nuclei whereas it is indigent for the case of 119 Sn. The possibilities of the trustworthy calculations, using the computer code CEM95, comparable with measurements of pion-induced fission in intermediate and heavy nuclei are explored by employing various systematics available in the code. Energy dependence of pion-induced fission in 119 Sn and 209 Bi is analyzed employing a newly defined parameter geometric-size-normalized fission cross-section (χ f g ). It is found that the collective nuclear excitations, which may lead to fission, become more probable for both 209 Bi and 119 Sn nuclei with increasing energy of negative pions from 500 to 1665 MeV. (author)

  3. General Outside Employment

    Data.gov (United States)

    Montgomery County of Maryland — This dataset contains all outside employment requests held by employees of Montgomery County (excluding uniformed police officer) approved by the Ethics Commission...

  4. Secretary Marshall's Employment Strategies

    Science.gov (United States)

    Stevenson, Gloria

    1977-01-01

    A review of proposed employment strategies and priorities of Ray Marshall, Secretary of Labor, with regard to training programs, governmental subsidy programs, apprenticeships, private sector jobs, etc. (WL)

  5. Institutionalized Employer Collective Action

    DEFF Research Database (Denmark)

    Ibsen, Christian Lyhne; Navrbjerg, Steen Erik

    2016-01-01

    Recent studies show that employer associations continue to exist in new ways despite internationalisation of the economy, liberalisation of markets and the decline of trade unions. This paradox raises two questions regarding EOs in today’s labour markets: Which employers join employer associations...... and what kind of services do EOs offer employers? This article explores these questions using two comprehensive surveys on EOs in Denmark – a prominent case of coordinated market economies. The main finding of the analyses is that collective activities vis-à-vis trade unions and government are still...

  6. Uni- and Multisensory Brain Areas are Synchronised across Spectators When Watching Unedited Dance Recordings

    Directory of Open Access Journals (Sweden)

    Corinne Jola

    2013-06-01

    Full Text Available The superior temporal sulcus (STS and gyrus (STG are commonly identified to be functionally relevant for multisensory integration of audiovisual (AV stimuli. However, most neuroimaging studies on AV integration used stimuli of short duration in explicit evaluative tasks. Importantly though, many of our AV experiences are of a long duration and ambiguous. It is unclear if the enhanced activity in audio, visual, and AV brain areas would also be synchronised over time across subjects when they are exposed to such multisensory stimuli. We used intersubject correlation to investigate which brain areas are synchronised across novices for uni- and multisensory versions of a 6-min 26-s recording of an unfamiliar, unedited Indian dance recording (Bharatanatyam. In Bharatanatyam, music and dance are choreographed together in a highly intermodal-dependent manner. Activity in the middle and posterior STG was significantly correlated between subjects and showed also significant enhancement for AV integration when the functional magnetic resonance signals were contrasted against each other using a general linear model conjunction analysis. These results extend previous studies by showing an intermediate step of synchronisation for novices: while there was a consensus across subjects' brain activity in areas relevant for unisensory processing and AV integration of related audio and visual stimuli, we found no evidence for synchronisation of higher level cognitive processes, suggesting these were idiosyncratic.

  7. Conference: Seeing two black holes merge (with gravitational waves!) | 14 September | Uni Dufour

    CERN Multimedia

    2016-01-01

    GW150914: the first direct observation of gravitational waves from the inspiral and merger of two black holes - Conference by Prof. Bruce Allen, Albert Einstein Institute Hannover.   "Seeing two black holes merge (with gravitational waves!)" Uni Dufour - Auditorium U300 Wednesday, 14 September at 7 p.m.   Bruce Allen. (Photo: ©F. Vinken/MPG) Abstract: On 14 September 2015, the advanced LIGO gravitational wave instruments detected the gravitational wave signal emitted as two black holes, about one billion light years away from Earth, made a final few orbits around each other then merged together. This was big news around the world, because scientists have tried to make such observations for more than half a century. Before they merged, the two black holes were about 29 and 36 times as massive as the sun; after the merger was complete, a single black hole about 62 times the sun's mass was left behind. I'll describe what black holes are, how they (...

  8. La Unión Europea y el nuevo terrorismo islamista

    Directory of Open Access Journals (Sweden)

    Gustavo Díaz

    2015-10-01

    Full Text Available Los ataques yihadistas cometidos en Europa desde comienzos de 2015 han puesto de manifiesto que la amenaza del terrorismo islamista late en el corazón del viejo continente. La expansión del Estado Islámico (ISIS ha incrementado el flujo de europeos que viajan a Siria e Irak para unirse a sus filas. Al menos, 30.000 combatientes procedentes de todo el mundo han hecho ya este trayecto para luchar bajo las órdenes del autoproclamado "califato". A falta de una política común, los Gobiernos de los países miembros de la Unión Europea intentan coordinar medidas de contraterrorismo. A corto plazo, el objetivo es evitar que ciudadanos europeos viajen a los territorios controlados por ISIS y vigilar a los sospechosos de haberse radicalizado, así como a los retornados. Incrementar la cooperación con los países del sur de Mediterráneo y el Sahel es otra de las prioridades. A largo plazo, sin embargo, será necesario desmontar la narrativa yihadista y promover medidas de integración de los jóvenes musulmanes que viven en Europa

  9. Evaluation and improvement of sour property packages in UniSim design

    Energy Technology Data Exchange (ETDEWEB)

    Yang, J.; Zhao, E.; Wang, L.; Saha, S. [Honeywell, Calgary, AB (Canada)

    2010-07-01

    This presentation described specialty fluid packages for modeling oil and gas process systems involving sour gases in contact with aqueous phase. UniSim Design is a popular process simulation tool in the oil and gas industry. The sour Peng-Robinson (PR) and sour Soave-Redlich-Kwong (SRK) models are commonly used for handling sour system where hydrogen sulphide (H{sub 2}S), carbon dioxide (CO{sub 2}) or ammonia (NH{sub 3}) are in contact with an aqueous phase. These sour options combine the PR/SRK equation of state and Wilson's API-sour model where the equation of state is used to determine the fugacities of the vapor and liquid hydrocarbon phases, plus the enthalpy for all 3 phases. The Wilson's API-sour method is used for the aqueous phase calculations, which accounts for the ionization of H{sub 2}S, CO{sub 2} and NH{sub 3} in the aqueous phase. The efficiency of these 2 thermodynamic property packages were evaluated in this study by comparing industrial and experimental data and the results from other similar models. The purpose of this study was to improve these property packages for more accurate and reliable modeling of sour systems. tabs., figs.

  10. Analysis of gene and protein name synonyms in Entrez Gene and UniProtKB resources

    KAUST Repository

    Arkasosy, Basil

    2013-05-11

    Ambiguity in texts is a well-known problem: words can carry several meanings, and hence, can be read and interpreted differently. This is also true in the biological literature; names of biological concepts, such as genes and proteins, might be ambiguous, referring in some cases to more than one gene or one protein, or in others, to both genes and proteins at the same time. Public biological databases give a very useful insight about genes and proteins information, including their names. In this study, we made a thorough analysis of the nomenclatures of genes and proteins in two data sources and for six different species. We developed an automated process that parses, extracts, processes and stores information available in two major biological databases: Entrez Gene and UniProtKB. We analysed gene and protein synonyms, their types, frequencies, and the ambiguities within a species, in between data sources and cross-species. We found that at least 40% of the cross-species ambiguities are caused by names that are already ambiguous within the species. Our study shows that from the six species we analysed (Homo Sapiens, Mus Musculus, Arabidopsis Thaliana, Oryza Sativa, Bacillus Subtilis and Pseudomonas Fluorescens), rice (Oriza Sativa) has the best naming model in Entrez Gene database, with low ambiguities between data sources and cross-species.

  11. Surrogate Based Uni/Multi-Objective Optimization and Distribution Estimation Methods

    Science.gov (United States)

    Gong, W.; Duan, Q.; Huo, X.

    2017-12-01

    Parameter calibration has been demonstrated as an effective way to improve the performance of dynamic models, such as hydrological models, land surface models, weather and climate models etc. Traditional optimization algorithms usually cost a huge number of model evaluations, making dynamic model calibration very difficult, or even computationally prohibitive. With the help of a serious of recently developed adaptive surrogate-modelling based optimization methods: uni-objective optimization method ASMO, multi-objective optimization method MO-ASMO, and probability distribution estimation method ASMO-PODE, the number of model evaluations can be significantly reduced to several hundreds, making it possible to calibrate very expensive dynamic models, such as regional high resolution land surface models, weather forecast models such as WRF, and intermediate complexity earth system models such as LOVECLIM. This presentation provides a brief introduction to the common framework of adaptive surrogate-based optimization algorithms of ASMO, MO-ASMO and ASMO-PODE, a case study of Common Land Model (CoLM) calibration in Heihe river basin in Northwest China, and an outlook of the potential applications of the surrogate-based optimization methods.

  12. Integrative characterization of germ cell-specific genes from mouse spermatocyte UniGene library

    Directory of Open Access Journals (Sweden)

    Eddy Edward M

    2007-07-01

    Full Text Available Abstract Background The primary regulator of spermatogenesis, a highly ordered and tightly regulated developmental process, is an intrinsic genetic program involving male germ cell-specific genes. Results We analyzed the mouse spermatocyte UniGene library containing 2155 gene-oriented transcript clusters. We predict that 11% of these genes are testis-specific and systematically identified 24 authentic genes specifically and abundantly expressed in the testis via in silico and in vitro approaches. Northern blot analysis disclosed various transcript characteristics, such as expression level, size and the presence of isoform. Expression analysis revealed developmentally regulated and stage-specific expression patterns in all of the genes. We further analyzed the genes at the protein and cellular levels. Transfection assays performed using GC-2 cells provided information on the cellular characteristics of the gene products. In addition, antibodies were generated against proteins encoded by some of the genes to facilitate their identification and characterization in spermatogenic cells and sperm. Our data suggest that a number of the gene products are implicated in transcriptional regulation, nuclear integrity, sperm structure and motility, and fertilization. In particular, we found for the first time that Mm.333010, predicted to contain a trypsin-like serine protease domain, is a sperm acrosomal protein. Conclusion We identify 24 authentic genes with spermatogenic cell-specific expression, and provide comprehensive information about the genes. Our findings establish a new basis for future investigation into molecular mechanisms underlying male reproduction.

  13. La Ciberseguridad como factor crítico en la Seguridad de la Unión Europea

    Directory of Open Access Journals (Sweden)

    Nieva Machin

    2016-10-01

    Full Text Available El ciberespacio es un escenario de conflicto altamente complejo al estar en constante evolución. Ni la Unión Europea ni ningún otro actor del sistema internacional se encuentra a salvo de las amenazas procedentes del ciberespacio. Pero los pasos dados desde la UE en el mundo de la ciberseguridad no son en absoluto suficientes. Europa necesita que su Estrategia de ciberseguridad sea realmente capaz de integrar a las diferentes Estrategias nacionales. Es urgente una mayor determinación, unos mayores recursos y unos mejores instrumentos que permitan a la Unión implementar una gestión de crisis y una prevención de ciberconflictos verdaderamente eficaz.

  14. The Politics of Religion in the United States Manifestations politiques de la religion aux États-Unis

    Directory of Open Access Journals (Sweden)

    Josef Braml

    2011-04-01

    Full Text Available Aux États-Unis, les attitudes religieuses ont plus d’influence sur les choix politiques que dans n’importe quelle autre démocratie occidentale. L’engagement religieux/moral de la droite chrétienne polarise les États-Unis, ce qui a des conséquences sur le plan électoral mais aussi sur les choix politiques réels. L’importance de la droite chrétienne dans la coalition électorale du Parti républicain oblige celui-ci à mettre l’accent sur les questions liées à la sécurité nationale, en particulier la lutte anti-terroriste, afin de mieux souder une coalition électorale hétérogène.

  15. A efetividade de programas sociais de acesso à educação superior: o caso do ProUni

    Directory of Open Access Journals (Sweden)

    Luiz Alex Silva Saraiva

    2011-08-01

    Full Text Available A pesquisa adotou uma perspectiva qualitativa, tendo sido abordados bolsistas do ProUni por meio de entrevistas semiestruturadas em profundidade. Os resultados revelam que embora este programa atenda às expectativas de inclusão no ensino superior, sendo-lhe atribuídas diversas expectativas e evidências de ascensão profissional e social, há críticas consideráveis, o que indica a necessidade de ajustes por parte dos formuladores de políticas públicas educacionais. Em que pese o escopo do ProUni, as conclusões indicam que, mesmo atingindo grande número de brasileiros, esta iniciativa mascara a necessidade de investimentos maciços em educação pública e de qualidade.

  16. [The Unión Médica Hispano-Americana (1900) and its contribution to scientific internationalism].

    Science.gov (United States)

    Olagüe de Ros, Guillermo

    2006-01-01

    The Unión Médica Hispano-Americana was founded during the XIII International Congress of Medicine of Paris in 1900. Its main aim was to strengthen the cultural and scientific ties among Spanish speaking countries. The first assembly took place in Madrid in the Spring of 1903. The most interesting paper presented was undoubtedly that of Manuel Tolosa Latour. He suggested creating a Diccionario Tecnológico Médico Hispano-Americano. The society had no continuity and neither did the dictionary. The reasons for this failure must be seen in the absence of economic support by political authorities in Spain and America, the organizational weakness of the Unión and the poverty of its action program, which was imbued with a triumphalist rhetoric, empty of content and highly paternalistic in its relations with the American world.

  17. UniSchooLabs Toolkit: Tools and Methodologies to Support the Adoption of Universities’ Remote and Virtual Labs in Schools

    Directory of Open Access Journals (Sweden)

    Augusto Chioccariello

    2012-11-01

    Full Text Available The UniSchooLabs project aims at creating an infrastructure supporting web access to remote/virtual labs and associated educational resources to engage learners with hands-on and minds-on activities in science, technology and math in schools. The UniSchooLabs tool-kit supports the teacher in selecting a remote or virtual lab and developing a lab activity based on an inquiry model template. While working with the toolkit the teacher has access to three main features: a a catalogue of available online laboratories; b an archive of activities created by other users; c a tool for creating new activities or reusing existing ones.

  18. Procesos de unión y estudio de interfaces en Si3N4 y ZrO2

    OpenAIRE

    Polanco Rodríguez, Raquel

    2007-01-01

    Esta memoria se ha centrado en la obtención de uniones en dos tipos de materiales cerámicos alto interés tecnológico, como son el nitruro de silicio y el óxido de circonio. El trabajo desarrollado en esta tesis ha consistido, principalmente, en el estudio y caracterización de las interfaces metaVcerámica generadas tras el proceso de unión en estos materiales consigo mismos, o bien con piezas metálicas. En el' caso del ShN4 se utilizó acero inoxidable como lámina de unión. Por o...

  19. Evidence of a New Current-Induced Magnetoelectric Effect in a Toroidal Magnetic Ordered State of UNi4B

    Science.gov (United States)

    Saito, Hiraku; Uenishi, Kenta; Miura, Naoyuki; Tabata, Chihiro; Hidaka, Hiroyuki; Yanagisawa, Tatsuya; Amitsuka, Hiroshi

    2018-03-01

    Magnetization measurements under direct electric current were performed in a toroidal magnetic ordered state of UNi4B to test a recent theoretical prediction of current-induced magnetization in a metallic system lacking local-inversion symmetry. We found that electric current parallel to [2\\bar{1}\\bar{1}0] and [0001] in the hexagonal 4-index notation induces a uniform magnetization along the [01\\bar{1}0] direction. The observed behavior of the induced magnetization is essentially consistent with the theoretical prediction; however, it also shows an inconsistency suggesting that the antiferromagnetic state of UNi4B could not be simply regarded as a uniform toroidal order in the ideal honeycomb layered structure.

  20. Seizure Onset Detection based on a Uni- or Multi-modal Intelligent Seizure Acquisition (UISA/MISA) System

    DEFF Research Database (Denmark)

    Conradsen, Isa; Beniczky, Sándor; Wolf, Peter

    2010-01-01

    An automatic Uni- or Multi-modal Inteligent Seizure Acquisition (UISA/MISA) system is highly applicable for onset detection of epileptic seizures based on motion data. The modalities used are surface electromyography (sEMG), acceleration (ACC) and angular velocity (ANG). The new proposed automatic...... algorithm on motion data is extracting features as “log-sum” measures of discrete wavelet components. Classification into the two groups “seizure” versus “nonseizure” is made based on the support vector machine (SVM) algorithm. The algorithm performs with a sensitivity of 91-100%, a median latency of 1...... second and a specificity of 100% on multi-modal data from five healthy subjects simulating seizures. The uni-modal algorithm based on sEMG data from the subjects and patients performs satisfactorily in some cases. As expected, our results clearly show superiority of the multimodal approach, as compared...

  1. Maine's Employability Skills Program

    Science.gov (United States)

    McMahon, John M.; Wolffe, Karen E.; Wolfe, Judy; Brooker, Carrie

    2013-01-01

    This Practice Report describes the development and implementation of the "Maine Employability Skills Program," a model employment program developed by the Maine Division for the Blind and Visually Impaired (DBVI). The program was designed to support the efforts of the chronically unemployed or underemployed. These consumers were either…

  2. Maternal Employment: 1979.

    Science.gov (United States)

    Hoffman, Lois Wladis

    1979-01-01

    Maternal employment is a part of modern family life, a response to changes such as smaller families and more efficient household management. Not only does maternal employment meet parents' needs, but it is a pattern better suited for socializing the child for the adult role s/he will occupy. (Author/GC)

  3. Dimensions of Adolescent Employment.

    Science.gov (United States)

    Mael, Fred A.; Morath, Ray A.; McLellan, Jeffrey A.

    1997-01-01

    Examines positive and negative correlates of adolescent work as a function of work dimensions. Results indicate that concurrent costs and benefits of adolescent employment may depend on dimensions of work as well as adolescent characteristics. Adolescent employment was generally related to subsequent work motivation and nonacademic performance.…

  4. Does Supported Employment Work?

    Science.gov (United States)

    Morgan McInnes, Melayne; Ozturk, Orgul Demet; McDermott, Suzanne; Mann, Joshua R.

    2010-01-01

    Providing employment-related services, including supported employment through job coaches, has been a priority in federal policy since the enactment of the Developmental Disabilities Assistance and Bill of Rights Act in 1984. We take advantage of a unique panel data set of all clients served by the South Carolina Department of Disabilities and…

  5. Development of MnBi permanent magnet: Neutron diffraction of MnBi powder

    Energy Technology Data Exchange (ETDEWEB)

    Cui, J., E-mail: jun.cui@pnnl.gov; Choi, J. P.; Li, G.; Polikarpov, E.; Darsell, J. [Energy and Environment Directorate, Pacific Northwest National Laboratory, Richland, Washington 99354 (United States); Kramer, M. J.; Zarkevich, N. A.; Wang, L. L.; Johnson, D. D. [Materials Sciences and Engineering Division, Ames Laboratory, Ames, Iowa 50011 (United States); Marinescu, M. [Electron Energy Corporation, Landisville, Pennsylvania 17538 (United States); Huang, Q. Z.; Wu, H. [NIST Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, Maryland 20899-6102 (United States); Vuong, N. V.; Liu, J. P. [Department of Physics, University of Texas at Arlington, Arlington, Texas 76019 (United States)

    2014-05-07

    MnBi attracts great attention in recent years for its great potential as permanent magnet materials. MnBi phase is difficult to obtain because of the rather drastic peritectic reaction between Mn and Bi. In this paper, we report our effort on synthesizing high purity MnBi compound using conventional powder metallurgical approaches. Neutron diffraction was carried out to investigate the crystal and nuclear structure of the obtained powder. The result shows that the purity of the obtained powder is about 91 wt. % at 300 K, and the magnetic moment of the Mn atom in MnBi lattice is 4.424 and 4.013 μ{sub B} at 50 K and 300 K, respectively.

  6. Development of MnBi permanent magnet: Neutron diffraction of MnBi powder

    Energy Technology Data Exchange (ETDEWEB)

    Cui, J; Choi, JP; Li, G; Polikarpov, E; Darsell, J; Kramer, MJ; Zarkevich, NA; Wang, LL; Johnson, DD; Marinescu, M; Huang, QZ; Wu, H; Vuong, NV; Liu, JP

    2014-05-07

    MnBi attracts great attention in recent years for its great potential as permanent magnet materials. MnBi phase is difficult to obtain because of the rather drastic peritectic reaction between Mn and Bi. In this paper, we report our effort on synthesizing high purity MnBi compound using conventional powder metallurgical approaches. Neutron diffraction was carried out to investigate the crystal and nuclear structure of the obtained powder. The result shows that the purity of the obtained powder is about 91 wt. % at 300 K, and the magnetic moment of the Mn atom in MnBi lattice is 4.424 and 4.013 mu(B) at 50 K and 300 K, respectively. (C) 2014 AIP Publishing LLC.

  7. INTERAKSI KEBIJAKAN RENEWABLE ENERGY DIRECTIVE DAN KEBIJAKAN INDONESIAN SUSTAINABLE PALM OIL TERHADAP EKSPOR KELAPA SAWIT INDONESIA KE UNI EROPA

    OpenAIRE

    -, INTAN TIARA KARTIKA

    2016-01-01

    2016 INTAN TIARA KARTIKA, E13112274, Interaksi Kebijakan Renewable Energy Directive dan Indonesian Sustainable Palm Oil Terhadap Ekspor Kelapa Sawit Indonesia ke Uni Eropa. Dibimbing oleh Prof. Dr. H. Mappa Nasrun, MA selaku pembimbing I dan H. Darwis MA, Ph.D selaku pembimbing II, departemen Ilmu Hubungan Internasional, Fakultas Ilmu Soisal dan Ilmu Politik, Universitas Hassanuddin. Penelitian ini bertujuan untuk mengetahui dan menjelaskan Interaksi Kebijakan Renewa...

  8. Matrimonio y unión libre en la percepción de adolescentes mexicanos radicados en Tijuana

    Directory of Open Access Journals (Sweden)

    Norma OJEDA

    2009-01-01

    Full Text Available Este es un estudio sobre las actitudes y percepciones de los jóvenes mexicanos acerca de la unión libre y el matrimonio. Se censó la población estudiantil de dos preparatorias públicas de Tijuana, Baja California, y también se obtuvo información proveniente de grupos focales realizados únicamente con estudiantes femeninas de las mismas escuelas. Los resultados indican que la mayoría de las mujeres y los hombres entrevistados no creen que existan ventajas comparativas entre el matrimonio y la unión libre. Asimismo, son más los jóvenes que están convencidos de que la convivencia prematrimonial contribuye a la estabilidad marital, que aquéllos que piensan que el matrimonio hace más estable a la pareja. También se encontró que son multinivel los aspectos referenciales considerados en las percepciones de las adolescentes entrevistadas acerca de los pros y contras que tienen la unión libre y el matrimonio.

  9. Papel de la Unión Europea en las negociaciones de cambio climático

    Directory of Open Access Journals (Sweden)

    Xira Ruiz

    2015-10-01

    Full Text Available El artículo analiza la postura de la Unión Europea ante el cambio climático, así como sus principales instrumentos de cooperación medioambiental en el sur del Mediterráneo. Se analizan los compromisos que ha adquirido la Unión en las distintas conferencias de las partes (COPs, su nivel de cumplimiento y su capacidad de liderazgo en el área del cambio climático desde la Cumbre de Río en 1992. También se examinan los principales compromisos adquiridos en las últimas conferencias de las partes y la postura de los actores clave ante la COP de París que se celebrará a finales de 2015. En la última parte, se profundiza en el impacto de iniciativas de cooperación UE-Magreb, como la Unión para el Mediterráneo o el proyecto Clima South.

  10. Colloidal synthesis and characterization of Bi2S3 nanoparticles for photovoltaic applications

    International Nuclear Information System (INIS)

    Piras, R; Aresti, M; Saba, M; Marongiu, D; Mula, G; Quochi, F; Mura, A; Bongiovanni, G; Cannas, C; Mureddu, M; Ardu, A; Ennas, G; Musinu, A; Calzia, V; Mattoni, A

    2014-01-01

    Bismuth sulfide is a promising n-type semiconductor for solar energy conversion. We have explored the colloidal synthesis of Bi 2 S 3 nanocrystals, with the aim of employing them in the fabrication of solution-processable solar cells and to replace toxic heavy metals chalcogenides like PbS or CdS, that are currently employed in such devices. We compare different methods to obtain Bi 2 S 3 colloidal quantum dots, including the use of environmentally benign reactants, through organometallic synthesis. Different sizes and shapes were obtained according to the synthesis parameters and the growth process has been rationalized by comparing the predicted morphology with systematic physical-chemistry characterization of nanocrystals by X-ray diffraction, FT-IR spectroscopy, Transmission Electron Microscopy (TEM)

  11. Electronic structures and stability of Ni/Bi2Te3 and Co/Bi2Te3 interfaces

    KAUST Repository

    Xiong, Ka; Wang, Weichao; Alshareef, Husam N.; Gupta, Rahul P.; White, John B.; Gnade, Bruce E.; Cho, Kyeongjae

    2010-01-01

    We investigate the electronic structures and stability for Ni/Bi 2Te3, NiTe/Bi2Te3, Co/Bi 2Te3 and CoTe2/Bi2Te3 interfaces by first-principles calculations. It is found that the surface termination strongly affects the band alignment. Ni and Co are found to form Ohmic contacts to Bi2Te3. The interface formation energy for Co/Bi2Te3 interfaces is much lower than that of Ni/Bi2Te3 interfaces. Furthermore, we found that NiTe on Bi2Te3 is more stable than Ni, while the formation energies for Co and CoTe2 on Bi2Te3 are comparable. © 2010 IOP Publishing Ltd.

  12. Electronic structures and stability of Ni/Bi2Te3 and Co/Bi2Te3 interfaces

    International Nuclear Information System (INIS)

    Xiong Ka; Wang Weichao; Alshareef, Husam N; Gupta, Rahul P; Gnade, Bruce E; Cho, Kyeongjae; White, John B

    2010-01-01

    We investigate the electronic structures and stability for Ni/Bi 2 Te 3 , NiTe/Bi 2 Te 3 , Co/Bi 2 Te 3 and CoTe 2 /Bi 2 Te 3 interfaces by first-principles calculations. It is found that the surface termination strongly affects the band alignment. Ni and Co are found to form Ohmic contacts to Bi 2 Te 3 . The interface formation energy for Co/Bi 2 Te 3 interfaces is much lower than that of Ni/Bi 2 Te 3 interfaces. Furthermore, we found that NiTe on Bi 2 Te 3 is more stable than Ni, while the formation energies for Co and CoTe 2 on Bi 2 Te 3 are comparable.

  13. Electronic structures and stability of Ni/Bi2Te3 and Co/Bi2Te3 interfaces

    KAUST Repository

    Xiong, Ka

    2010-03-04

    We investigate the electronic structures and stability for Ni/Bi 2Te3, NiTe/Bi2Te3, Co/Bi 2Te3 and CoTe2/Bi2Te3 interfaces by first-principles calculations. It is found that the surface termination strongly affects the band alignment. Ni and Co are found to form Ohmic contacts to Bi2Te3. The interface formation energy for Co/Bi2Te3 interfaces is much lower than that of Ni/Bi2Te3 interfaces. Furthermore, we found that NiTe on Bi2Te3 is more stable than Ni, while the formation energies for Co and CoTe2 on Bi2Te3 are comparable. © 2010 IOP Publishing Ltd.

  14. Exploratory Bi-factor Analysis: The Oblique Case

    OpenAIRE

    Jennrich, Robert L.; Bentler, Peter M.

    2011-01-01

    Bi-factor analysis is a form of confirmatory factor analysis originally introduced by Holzinger and Swineford (1937). The bi-factor model has a general factor, a number of group factors, and an explicit bi-factor structure. Jennrich and Bentler (2011) introduced an exploratory form of bi-factor analysis that does not require one to provide an explicit bi-factor structure a priori. They use exploratory factor analysis and a bi-factor rotation criterion designed to produce a rotated loading mat...

  15. Sodium citrate-assisted anion exchange strategy for construction of Bi2O2CO3/BiOI photocatalysts

    International Nuclear Information System (INIS)

    Song, Peng-Yuan; Xu, Ming; Zhang, Wei-De

    2015-01-01

    Highlights: • Heterostructured Bi 2 O 2 CO 3 /BiOI microspheres were prepared via anion exchange. • Sodium citrate-assisted anion exchange for construction of composite photocatalysts. • Bi 2 O 2 CO 3 /BiOI composites show high visible light photocatalytic activity. - Abstract: Bi 2 O 2 CO 3 /BiOI heterojuncted photocatalysts were constructed through a facile partial anion exchange strategy starting from BiOI microspheres and urea with the assistance of sodium citrate. The content of Bi 2 O 2 CO 3 in the catalysts was regulated by modulating the amount of urea as a precursor, which was decomposed to generate CO 3 2− in the hydrothermal process. Citrate anion plays a key role in controlling the morphology and composition of the products. The Bi 2 O 2 CO 3 /BiOI catalysts display much higher photocatalytic activity than pure BiOI and Bi 2 O 2 CO 3 towards the degradation of rhodamine B (RhB) and bisphenol A (BPA). The enhancement of photocatalytic activity of the heterojuncted catalysts is attributed to the formation of p–n junction between p-BiOI and n-Bi 2 O 2 CO 3 , which is favorable for retarding the recombination of photoinduced electron-hole pairs. Moreover, the holes are demonstrated to be the main active species for the degradation of RhB and BPA

  16. How to use a sponsorship platform to support an international master brand strategy: The UniCredit UEFA champions league sponsorship

    OpenAIRE

    Penna Daniele; Guenzi Paolo

    2014-01-01

    Managers need a better understanding of critical success factors in sponsorship. An excellent example how a multinational company successfully approached this challenge is the case study of UniCredit. This European Bank is one of the sponsors of the UEFA Champions League with an exclusive running from July 2009 until June 2015. This sponsorship is an essential element within the group-wide marketing communication strategy of UniCredit. It is also a good example of how a multinational co...

  17. Optimization of excess Bi doping to enhance ferroic orders of spin casted BiFeO3 thin film

    International Nuclear Information System (INIS)

    Gupta, Surbhi; Gupta, Vinay; Tomar, Monika; James, A. R.; Pal, Madhuparna; Guo, Ruyan; Bhalla, Amar

    2014-01-01

    Multiferroic Bismuth Ferrite (BiFeO 3 ) thin films with varying excess bismuth (Bi) concentration were grown by chemical solution deposition technique. Room temperature multiferroic properties (ferromagnetism, ferroelectricity, and piezoelectricity) of the deposited BiFeO 3 thin films have been studied. High resolution X-ray diffraction and Raman spectroscopy studies reveal that the dominant phases formed in the prepared samples change continuously from a mixture of BiFeO 3 and Fe 2 O 3 to pure BiFeO 3 phase and, subsequently, to a mixture of BiFeO 3 and Bi 2 O 3 with increase in the concentration of excess Bi from 0% to 15%. BiFeO 3 thin films having low content (0% and 2%) of excess Bi showed the traces of ferromagnetic phase (γ-Fe 2 O 3 ). Deterioration in ferroic properties of BiFeO 3 thin films is also observed when prepared with higher content (15%) of excess Bi. Single-phased BiFeO 3 thin film prepared with 5% excess Bi concentration exhibited the soft ferromagnetic hysteresis loops and ferroelectric characteristics with remnant polarization 4.2 μC/cm 2 and saturation magnetization 11.66 emu/g. The switching of fine spontaneous domains with applied dc bias has been observed using piezoresponse force microscopy in BiFeO 3 thin films having 5% excess Bi. The results are important to identify optimum excess Bi concentration needed for the formation of single phase BiFeO 3 thin films exhibiting the improved multiferroic properties.

  18. Optimization of excess Bi doping to enhance ferroic orders of spin casted BiFeO{sub 3} thin film

    Energy Technology Data Exchange (ETDEWEB)

    Gupta, Surbhi; Gupta, Vinay, E-mail: drguptavinay@gmail.com [Department of Physics and Astrophysics, University of Delhi, Delhi (India); Tomar, Monika [Department of Physics, Miranda Housea, University of Delhi, Delhi (India); James, A. R. [Defence Metallurgical Research Laboratory, Hyderabad (India); Pal, Madhuparna; Guo, Ruyan; Bhalla, Amar [Department of Electrical and Computer Engineering, College of Engineering, University of Texas at SanAntonio, San Antonio 78249 (United States)

    2014-06-21

    Multiferroic Bismuth Ferrite (BiFeO{sub 3}) thin films with varying excess bismuth (Bi) concentration were grown by chemical solution deposition technique. Room temperature multiferroic properties (ferromagnetism, ferroelectricity, and piezoelectricity) of the deposited BiFeO{sub 3} thin films have been studied. High resolution X-ray diffraction and Raman spectroscopy studies reveal that the dominant phases formed in the prepared samples change continuously from a mixture of BiFeO{sub 3} and Fe{sub 2}O{sub 3} to pure BiFeO{sub 3} phase and, subsequently, to a mixture of BiFeO{sub 3} and Bi{sub 2}O{sub 3} with increase in the concentration of excess Bi from 0% to 15%. BiFeO{sub 3} thin films having low content (0% and 2%) of excess Bi showed the traces of ferromagnetic phase (γ-Fe{sub 2}O{sub 3}). Deterioration in ferroic properties of BiFeO{sub 3} thin films is also observed when prepared with higher content (15%) of excess Bi. Single-phased BiFeO{sub 3} thin film prepared with 5% excess Bi concentration exhibited the soft ferromagnetic hysteresis loops and ferroelectric characteristics with remnant polarization 4.2 μC/cm{sup 2} and saturation magnetization 11.66 emu/g. The switching of fine spontaneous domains with applied dc bias has been observed using piezoresponse force microscopy in BiFeO{sub 3} thin films having 5% excess Bi. The results are important to identify optimum excess Bi concentration needed for the formation of single phase BiFeO{sub 3} thin films exhibiting the improved multiferroic properties.

  19. Studying magnetic structure of Bi doped Co2MnO4 cubic spinel by neutron diffraction

    International Nuclear Information System (INIS)

    Rajeevan, N.E.; Kaushik, S.D.; Kumar, Ravi

    2016-01-01

    In present work, we studied effect of Bi doped spinel Bi x Co 2-x MnO 4 (x = 0, 0.05, 0.10, 0.15 and 0.20) samples on their crystal as well as magnetic structure by employing neutron diffraction of wavelength 1.48 A using focusing crystal diffractometer of UGC-DAECSR Mumbai Centre at Dhruva, Trombay, Mumbai, India. The analysis of the neutron diffraction using Fullprof program reveals that crystal structure due to Bi doping remains intact and all the samples have been formed in the cubic spinel structure with Fd3m (space group no. 227). The lattice parameter shows the positive thermal expansion upon Bi doping across the temperature range. In order to understand the implication on the spin structure and magnetism in the detail, temperature dependent neutron diffraction study is carried out on some of the samples (x = 0, 0.1) in the series. The ND pattern of x = 0.1 at 2.9K is shown. The experimental finding in terms of modified magnetic structure upon Bi doping are discussed which are understood in terms of variation in the ferroelectric properties, bond lengths and their effect on the CoO 6 polyhedra. Furthermore, Bi substitution in Co 2 MnO 4 spinel brings in the balance of structural distortion, which affects both ferrimagnetism and ferroelectricity

  20. AgBr/MgBi2O6 heterostructured composites with highly efficient visible-light-driven photocatalytic activity

    Science.gov (United States)

    Zhong, Liansheng; Hu, Chaohao; Zhuang, Jing; Zhong, Yan; Wang, Dianhui; Zhou, Huaiying

    2018-06-01

    AgBr/MgBi2O6 heterostructured photocatalysts were synthesized by the deposition-precipitation method. X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), photoluminescence (PL), and UV-Visible diffuse reflectance spectroscopy (UV-Vis DRS) were employed to examine the phase structure, morphology and optical properties of the as-prepared samples. The photocatalytic activity was investigated by decomposing methylene blue (MB) solution under visible light irradiation (λ > 420 nm). AgBr/MgBi2O6 composites exhibited significantly enhanced visible-light-driven photocatalytic properties in comparison with pure MgBi2O6 and AgBr. When the molar ratio of AgBr to MgBi2O6 was 3:1, the composite catalyst showed the optimal photocatalytic activity and excellent stability. The enhanced photocatalytic activity of AgBr/MgBi2O6 composites was attributed to the formation of p-n heterojunction between AgBr and MgBi2O6, thereby resulting in the effective separation and transfer of photogenerated electrons-hole pairs.

  1. Giant Rashba spin splitting in Bi2Se3: Tl

    KAUST Repository

    Singh, Nirpendra

    2014-07-25

    First-principles calculations are employed to demonstrate a giant Rashba spin splitting in Bi2Se3:Tl. Biaxial tensile and compressive strain is used to tune the splitting by modifying the potential gradient. The band gap is found to increase under compression and decreases under tension, whereas the dependence of the Rashba spin splitting on the strain is the opposite. Large values of αR = 1.57 eV Å at the bottom of the conduction band (electrons) and αR = 3.34 eV Å at the top of the valence band (holes) are obtained without strain. These values can be further enhanced to αR = 1.83 eV Å and αR = 3.64 eV Å, respectively, by 2% tensile strain. © 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

  2. Bi-directional associations between psychological arousal, cortisol, and sleep

    DEFF Research Database (Denmark)

    Garde, Anne Helene; Albertsen, Karen; Persson, Roger

    2012-01-01

    The aim was to elucidate the possible bi-directional relation between daytime psychological arousal, cortisol, and self-reported sleep in a group of healthy employees in active employment. Logbook ratings of sleep (Karolinska Sleep Questionnaire), stress, and energy, as well as positive...... and negative experiences in work and private life, were collected together with salivary cortisol over 3 days (n = 265). Higher bedtime ratings of stress and problems during the day were associated with morning ratings of poor sleep. Poorer morning ratings of sleep were associated with higher ratings of stress...... and problems during the day. The results underpin the possibility that arousal and poor sleep might create a self-reinforcing vicious circle that negatively affects a person's well-being....

  3. MENGKAJI PELUANG PASAR INTERNASIONAL MELALUI KINERJA EKONOMI NEGARA-NEGARA UNI EROPA

    Directory of Open Access Journals (Sweden)

    Devie Devie

    2003-01-01

    Full Text Available The economic integration through the establishment of European Union (EU which consists of 15 countries in January 1958 is aimed to facilitate economic collaboration and enhance the union members wealth. The last attempt of this economic integration can be seen in unifying the union member currency into EURO (although this attempt is not supported by England, Sweden, and Finland. This attempt has eventually changed the marketing stategy of many companies, excluding the countries of EU. Since they concentrate on penetrating EU's market. The data of EU's economic indicators show that, until the year of 2001, EU's countries have a great market opportunity for the countries outside EU. The market opporunity is based on the fact that EU countries hold the second best GDP, after USA. With 70.74% of this GDP, it is contributed export-import activities. Besides that, the economic growth rate of EU countries is 1,5% higher than USA, and the GDP per capita is relatively high and the population of EU countries is ranked to be no.3 after China and India. As for Indonesia, the currency rate of euro which is relatively stable. Is very beneficial The EU countries that have great market opportunities to enter to are Ireland, Luxembourge, and Finland. So far there has been 10 of the EU candidates countries with good economic performance except Turkey which could enhance in the future, if they become permananet members of the union Abstract in Bahasa Indonesia : Integrasi ekonomi melalui pembentukan Uni Eropa atau Europen Union (EU sejak Januari 1958 dengan anggota 15 negara bertujuan memudahkan kerjasama ekonomi dan peningkatan kemakmuran anggotanya. Upaya terakhir dalam pengintegrasian ekonomi adalah penyatuan mata uang EURO, walaupun tidak diikuti oleh Inggeris, Swedia, dan Finlandia. Upaya ini sekaligus merubah strategi pemasaran bagi perusahaan di negara yang tidak termasuk anggota dalam memasuki pasar EU. Berdasarkan eksplorasi data indikator ekonomi EU

  4. A auditoria legal na União Europeia: enquadramento, debate actual e perspectivas futuras

    Directory of Open Access Journals (Sweden)

    José Joaquim Marques de Almeida

    2002-04-01

    Full Text Available A auditoria legal na União Europeia, encontra-se, presentemente, numa grande encruzilhada. Imposta pelos poderes públicos e pelas directivas comunitárias, é criticada pelos empresários por não acrescentar valor ao negócio, e, duma maneira geral, pela sociedade que ao atribuir-lhe a característica de bem público, esperava dela respostas mais amplas do que aquelas que os auditores, espartilhados por um quadro normativo e jurídico-técnico construído pelas suas associações profissionais, conseguem ou querem facultar ao público em geral. Com efeito, as normas de auditoria que tratam do planeamento, execução e avaliação do trabalho do auditor, têm sido o refúgio eleito pelos auditores e uma justificação esgrimida, unanimemente, pela classe, para recusar liminarmente o alargamento das funções de auditoria à análise da viabilidade da empresa e à detecção de erros e fraudes. Neste contexto, a função de auditoria legal está sendo, na actualidade, fortemente criticada por não proporcionar ao público "certezas" de que: as declarações financeiras estão correctas, a empresa não falirá, não houve fraudes ou irregularidades, a empresa agiu dentro da lei, foi administrada de forma competente e adoptou uma atitude responsável face aos assuntos ambientais e sociais. É, pois, o objectivo deste trabalho, apresentar em relação à União Europeia, a origem da auditoria legal, e, em termos mais gerais, as inquietações do presente e perspectivar a função, num futuro não muito distante.Nowadays, legal auditing in the European Union finds itself facing a great crossroads. Imposed by governments and communitarian guidelines, it is criticized by entrepreneurs for not aggregating value to the business, as well as by society in general which, characterizing legal auditing as a public good, expected it to give more elaborate answers than those which the auditors, closed in by a standardizing and legal-technical framework made

  5. Processing Y- and Bi-based superconductors

    International Nuclear Information System (INIS)

    Balachandran, U.; Dos Santos, D.I.; von Stumberg, A.W.; Graham, S.W.; Singh, J.P.; Youngdahl, C.A.; Goretta, K.C.; Shi, D.; Poeppel, R.B.

    1989-01-01

    This paper reports on bulk specimens of YBa 2 Cu 3 O x and Bi 2 Sr 2 CaCu 2 O y formed and then processed by sintering in the solid state, in the presence of a liquid phase, or by sinter forging. Both Y- and Bi-based superconductors are difficult to densify by solid-state sintering but easy to densify in the presence of a liquid phase. Effects of sintering conditions on superconducting properties are, however, different between the two materials. These differences will be discussed. Attempts to texture microstructures and increase J c by sinter-forging techniques have been successful for Y-based superconductors, but unsuccessful for Bi-based superconductors

  6. Entrepreneurship and Employment Stability

    DEFF Research Database (Denmark)

    Failla, Virgilio; Melillo, Francesca; Reichstein, Toke

    2017-01-01

    This paper challenges the conventional belief that entrepreneurship is an unstable career path. Using longitudinal matched employer–employee data from Denmark, the analysis reveals that a transition to entrepreneurship decreases individual's employment turnover tendency. Three explanations...

  7. Veteran Services - Welcome Employers

    Science.gov (United States)

    Assistance Crosswalk websites Transition GPS National Career Readiness Certificate Post Traumatic Stress Credits (PDF) Fidelity Bonding Program National Career Readiness (PDF) Veteran Recruitment State/Federal veteran recruitment process Military Veteran Employment Guide Veterans Hiring Toolkit Other Information

  8. Topotactic synthesis of a new BiS2-based superconductor Bi2(O,F)S2

    OpenAIRE

    Okada, Tomoyuki; Ogino, Hiraku; Shimoyama, Jun-ichi; Kishio, Kohji

    2015-01-01

    A new BiS2-based superconductor Bi2(O,F)S2 was discovered. This is a layered compound consisting of alternate stacking structure of rock-salt-type BiS2 superconducting layer and fluorite-type Bi(O,F) blocking layer. Bi2(O,F)S2 was obtained as the main phase by topotactic fluorination of undoped Bi2OS2 using XeF2, which is the first topotactic synthesis of an electron-doped superconductor via reductive fluorination. With increasing F-content, a- and c-axis length increased and decreased, respe...

  9. Topotactic synthesis of a new BiS2-based superconductor Bi2(O,F)S2

    Science.gov (United States)

    Okada, Tomoyuki; Ogino, Hiraku; Shimoyama, Jun-ichi; Kishio, Kohji

    2015-02-01

    A new BiS2-based superconductor, Bi2(O,F)S2, was discovered. It is a layered compound consisting of alternately stacked structure of rock-salt-type BiS2 superconducting layers and fluorite-type Bi(O,F) blocking layers. Bi2(O,F)S2 was obtained as the main phase by topotactic fluorination of undoped Bi2OS2 using XeF2. This is the first topotactic synthesis of an electron-doped superconductor via reductive fluorination. With increasing F-content, a- and c-axis lengths increased and decreased, respectively, and Tc increased to 5.1 K.

  10. Funding knowledgebases: Towards a sustainable funding model for the UniProt use case

    Science.gov (United States)

    Gabella, Chiara; Durinx, Christine; Appel, Ron

    2018-01-01

    Millions of life scientists across the world rely on bioinformatics data resources for their research projects. Data resources can be very expensive, especially those with a high added value as the expert-curated knowledgebases. Despite the increasing need for such highly accurate and reliable sources of scientific information, most of them do not have secured funding over the near future and often depend on short-term grants that are much shorter than their planning horizon. Additionally, they are often evaluated as research projects rather than as research infrastructure components. In this work, twelve funding models for data resources are described and applied on the case study of the Universal Protein Resource (UniProt), a key resource for protein sequences and functional information knowledge. We show that most of the models present inconsistencies with open access or equity policies, and that while some models do not allow to cover the total costs, they could potentially be used as a complementary income source. We propose the Infrastructure Model as a sustainable and equitable model for all core data resources in the life sciences. With this model, funding agencies would set aside a fixed percentage of their research grant volumes, which would subsequently be redistributed to core data resources according to well-defined selection criteria. This model, compatible with the principles of open science, is in agreement with several international initiatives such as the Human Frontiers Science Program Organisation (HFSPO) and the OECD Global Science Forum (GSF) project. Here, we have estimated that less than 1% of the total amount dedicated to research grants in the life sciences would be sufficient to cover the costs of the core data resources worldwide, including both knowledgebases and deposition databases. PMID:29333230

  11. La Unión Europea y Colombia. Historia y desafío

    Directory of Open Access Journals (Sweden)

    Lillo González, Margarita

    2009-06-01

    Full Text Available This article reviews the history and present situation of the relations between the European Union and Colombia in its political and economic dimensions. It analyzes the way in which the position of the EU has stayed constant as far as considering that the Colombian conflicts are caused by the inequalities and the poverty, in spite of the pressures of the United States, that have defended more unilateralist and military positions on the matter, positions with that some communitarian partners have even aligned themselves. In front of previous studies, it is pleaded explicitly for a balance that insists on the positive and constructive aspects, coherent with a scene in process of creation and extension, like the European one, although without resigning to value it from a critical perspectiva.

    Este artículo revisa la historia y situación actual de las relaciones Unión Europea- Colombia en sus dimensiones política y económica. Analiza el modo en que la posición de la UE se ha mantenido constante en cuanto a su consideración de que los conflictos en el país andino se deben a las desigualdades y la pobreza, a pesar de las presiones de Estados Unidos, que ha defendido posturas más unilateralistas y militares al respecto, e incluso de que algunos socios comunitarios se hayan alineado con ellas. Frente a estudios anteriores se aboga explícitamente por un balance que haga hincapié en los aspectos positivos y constructivos, coherentes con los de un escenario en proceso de creación y ampliación como es el europeo, aunque sin renunciar a valorarlo con una perspectiva crítica.

  12. Calidad del coque de Horno Alto en la Unión Europea

    Directory of Open Access Journals (Sweden)

    Alvarez, R.

    2002-10-01

    Full Text Available After a brief review of the coking technology at the beginning of the new millennium, blast furnace coke quality criteria of most of EU countries, presented by the European Blast Furnace Committee in the 4th European Coke and Ironmaking Congress, are compared with those used by the Spanish Steel Industry at Aceralia. Blast furnace coke quality is very high in EU's countries in order to meet the requirements of bigger blast furnaces commissioned in the last years. CSR index is the most important parameter in the control of coke quality in Europe.

    En el presente trabajo se ha llevado a cabo una breve revisión de las tecnologías de coquización existentes al comienzo del nuevo milenio. Los criterios de calidad del coque de Horno Alto de la mayoría de los países de la Unión Europea, recogidos por el European Blast Furnace Committee, y que fueron presentados en el 4th European Coke and Ironmaking Congress en París durante el año 2000, se comparan con los utilizados por la industria siderúrgica española Aceralia. Como consecuencia del sensible aumento experimentado en el tamaño de los modernos Hornos Altos durante los últimos años, se ha podido comprobar que, en la UE, los valores de los diversos parámetros de control de calidad del coque son bastante similares y con unos requerimientos muy elevados. Asimismo, en la UE el parámetro CSR se ha convertido en el más importante para el control de la calidad del coque de Horno Alto.

  13. "Uni katab meid ühele palju kahele vähe..." : [luuletused] / Jaan Kaplinski

    Index Scriptorium Estoniae

    Kaplinski, Jaan, 1941-

    2001-01-01

    Tekst eesti ja inglise k. J. Kaplinski lühibiograafia eesti ja inglise k. lk. 93. Sisu: "Uni katab meid ühele palju kahele vähe..." = "Sleep covers us too much for one, too little for two..." ; "Olematus ulatub kõikjale ja olemasolu on täis rahu..." = "Non-being pervades everything and being is full of peace..." ; "See mis meid äratas..." = "What woke us..." ; "Seesama meri meis kõigis..." = "The same sea in us all..." ; Dana paramita ; "Ida ja Lääne vaheline piir rändab ikka, vahel itta, vahel läände..." = "The East-West border is always wandering..." ; "Pesu ei saa kunagi pestud..." = "The washing never gets home..." ; "Neli ja pool tonni sileesia sütt..." = "Four-and-a-half tons of Silesian coal..." ; "Ei teagi, kas ma tohin rääkida roheline..." = "I don't even know if I have the right to say "green"..." ; "Maailmu on nii palju kui liivateri mere ääres..." = "There are as many worlds as grains of sand on a beach..." ; "Viimane pilv läheb üle taeva läänest itta..." = "A last cloud goes over the sky from West to East..." ; "Taevas on pilves. Soe tuul tuleb hõlma alla..." = "The sky is overcast. The warm wind is creeping under your shirt..." ; "Mu tädi tundis neid hästi, mina ei tea..." = "My aunt knew them well, I know of them..." ; "Hommikul tutvustati mind president Mitterrandile..." = "In the morning, I was presented to President Mitterrand..." ; "Meri ei taha lainetada. Tuul ei taha puhuda..." = "The sea doesn't want to wave...".Poems written in English: "Om svabhavasuddhah sarva dharmah. No selfhood..." ; "My little boy..." ; "After many bitterly cold days..." ; "You can forget nature..." ; I walk facing East..." ; "A skier going south..."

  14. Funding knowledgebases: Towards a sustainable funding model for the UniProt use case.

    Science.gov (United States)

    Gabella, Chiara; Durinx, Christine; Appel, Ron

    2017-01-01

    Millions of life scientists across the world rely on bioinformatics data resources for their research projects. Data resources can be very expensive, especially those with a high added value as the expert-curated knowledgebases. Despite the increasing need for such highly accurate and reliable sources of scientific information, most of them do not have secured funding over the near future and often depend on short-term grants that are much shorter than their planning horizon. Additionally, they are often evaluated as research projects rather than as research infrastructure components. In this work, twelve funding models for data resources are described and applied on the case study of the Universal Protein Resource (UniProt), a key resource for protein sequences and functional information knowledge. We show that most of the models present inconsistencies with open access or equity policies, and that while some models do not allow to cover the total costs, they could potentially be used as a complementary income source. We propose the Infrastructure Model as a sustainable and equitable model for all core data resources in the life sciences. With this model, funding agencies would set aside a fixed percentage of their research grant volumes, which would subsequently be redistributed to core data resources according to well-defined selection criteria. This model, compatible with the principles of open science, is in agreement with several international initiatives such as the Human Frontiers Science Program Organisation (HFSPO) and the OECD Global Science Forum (GSF) project. Here, we have estimated that less than 1% of the total amount dedicated to research grants in the life sciences would be sufficient to cover the costs of the core data resources worldwide, including both knowledgebases and deposition databases.

  15. Electronic transport in the heavy fermion superconductors UPd2Al3 and UNi2Al3. Thin film studies

    International Nuclear Information System (INIS)

    Foerster, Michael

    2008-01-01

    This work addresses the electronical properties of the superconductors UPd 2 Al 3 and UNi 2 Al 3 on the basis of thin film experiments. Epitaxial thin film samples of UPd 2 Al 3 and UNi 2 Al 3 were prepared using UHV Molecular Beam Epitaxy (MBE). For UPd 2 Al 3 , the change of the growth direction from the intrinsic (001) to epitaxial (100) was predicted and sucessfully demonstrated using LaAlO3 substrates cut in (110) direction. With optimized deposition process parameters for UPd 2 Al 3 (100) on LaAlO 3 (110) superconducting samples with critical temperatures up to T c =1.75 K were obtained. UPd 2 Al 3 -AlO x -Ag mesa junctions with superconducting base electrode were prepared and shown to be in the tunneling regime. However, no signatures of a superconducting density of states were observed in the tunneling spectra. The resistive superconducting transition was probed for a possible dependence on the current direction. In contrast to UNi 2 Al 3 , the existence of such feature was excluded in UPd 2 Al 3 (100) thin films. The second focus of this work is the dependence of the resistive transition in UNi 2 Al 3 (100) thin films on the current direction. The experimental fact that the resistive transition occurs at slightly higher temperatures for I parallel a than for I parallel c can be explained within a model of two weakly coupled superconducting bands. Evidence is presented for the key assumption of the two-band model, namely that transport in and out of the ab-plane is generated on different, weakly coupled parts of the Fermi surface. Main indications are the angle dependence of the superconducting transition and the dependence of the upper critical field B c 2 on current and field orientation. Additionally, several possible alternative explanations for the directional splitting of the transition are excluded in this work. An origin due to scattering on crystal defects or impurities is ruled out, likewise a relation to ohmic heating or vortex dynamics. The

  16. Employers meet employees

    OpenAIRE

    Scheuer, Christian

    2009-01-01

    "Leaping into the future of labor economics: the research potential of linking employer and employee data" is the title of a paper by Daniel S Hammermesh published in Labour Economics in 1999. I quote it here, since it captures much of my motivation for the work included in this thesis. Considering applied micro econometrics and labor economics my main elds of interest, the development of linked employer-employee data that took place in Denmark around the time of the new mille...

  17. In-situ synthesis of nanofibers with various ratios of BiOCl{sub x}/BiOBr{sub y}/BiOI{sub z} for effective trichloroethylene photocatalytic degradation

    Energy Technology Data Exchange (ETDEWEB)

    Zhang, Yifan [Department of Chemistry, Inha University, 100 Inharo, Incheon 402-751 (Korea, Republic of); Park, Mira [Department of Organic Materials and Fiber Engineering, Chonbuk National University, Jeonju 561-756 (Korea, Republic of); Kim, Hak Yong [Department of BIN Convergence Technology, Chonbuk National University, Jeonju, 561-756 (Korea, Republic of); Ding, Bin [College of Textiles, Donghua University, Shanghai 201620 (China); Park, Soo-Jin, E-mail: sjpark@inha.ac.kr [Department of Chemistry, Inha University, 100 Inharo, Incheon 402-751 (Korea, Republic of)

    2016-10-30

    Highlights: • BiOCl{sub x}/BiOBr{sub y}/BiOI{sub z}/PAN fibers were synthesized by in-situ method. • Photodegradation behavior of BiOCl{sub x}/BiOBr{sub y}/BiOI{sub z}/PAN fibers was measured under solar light irradiation. • BiOCl{sub 0.3}/BiOBr{sub 0.3}/BiOI{sub 0.4}/PAN fibers exhibited the highest photocatalytic activity. • Photocatalytic mechanism was discussed in detail. - Abstract: In this work, BiOCl{sub x}/BiOBr{sub y}/BiOI{sub z} (x + y + z = 1) composite nanofibers were prepared through electrospinning and the sol-gel methods. Photocatalytic degradation of trichloroethylene (TCE) by BiOCl{sub x}/BiOBr{sub y}/BiOI{sub z}/PAN nanofibers was systematically investigated via gas chromatography (GC). Optimum photocatalytic activity was achieved with BiOCl{sub 0.3}/BiOBr{sub 0.3}/BiOI{sub 0.4} fibers under solar light irradiation. X-ray photoelectron spectroscopy (XPS) peaks due to C−O and C=O were observed at 286.0 and 288.3 eV, respectively, it indicated that the BiOCl{sub x}/BiOBr{sub y}/BiOI{sub z} mixture had been successfully doped on the polyacrylonitrile (PAN) fibers. Furthermore, X-ray diffraction (XRD) results also confirmed that we had synthesized the as-prepared composite nanofibers successfully. Photocatalytic activities of BiOCl{sub 0.3}/BiOBr{sub 0.3}/BiOI{sub 0.4} were up to 3 times higher than the pure BiOCl, BiOBr and BiOI samples, respectively.

  18. Deficiency of employability capacity

    Directory of Open Access Journals (Sweden)

    Pelse I.

    2012-10-01

    Full Text Available Young unemployed people have comprised one of the significantly largest groups of the unemployed people in Latvia in recent years. One of the reasons why young people have difficulty integrating into the labour market is the “expectation gap” that exists in the relations between employers and the new generation of workers. Employers focus on capacity-building for employability such individual factors as strength, patience, self-discipline, self-reliance, self-motivation, etc., which having a nature of habit and are developed in a long-term work socialization process, which begins even before the formal education and will continue throughout the life cycle. However, when the socialization is lost, these habits are depreciated faster than they can be restored. Currently a new generation is entering the labour market, which is missing the succession of work socialization. Factors, such as rising unemployment and poverty in the background over the past twenty years in Latvia have created a very unfavourable employability background of “personal circumstances” and “external factors”, which seriously have impaired formation of the skills and attitudes in a real work environment. The study reveals another paradox – the paradox of poverty. Common sense would want to argue that poverty can be overcome by the job. However, the real state of affairs shows that unfavourable coincidence of the individual, personal circumstances and external factors leads to deficit of employability capacity and possibility of marked social and employment deprivation.

  19. Employment of security personnel

    International Nuclear Information System (INIS)

    Anon.

    1990-01-01

    If a company or institution hires personnel of a security service company to protect its premises, this kind of employment does not mean the company carries on temporary employment business. Within the purview of section 99, sub-section 1 of the BetrVG (Works Constitution Act), the security service personnel is not 'employed' in the proper sense even if the security tasks fulfilled by them are done at other times by regular employees of the company or institution. The court decision also decided that the Works Council need not give consent to employment of foreign security personnel. The court decision was taken for settlement of court proceedings commenced by Institute of Plasma Physics in Garching. In his comments, W. Hunold accedes to the court's decision and discusses the underlying reasons of this decision and of a previous ruling in the same matter by putting emphasis on the difference between a contract for services and a contract for work, and a contract for temporary employment. The author also discusses the basic features of an employment contract. (orig./HP) [de

  20. Reducing Employment Insecurity

    Directory of Open Access Journals (Sweden)

    Florence Lebert

    2016-10-01

    Full Text Available The perception of job insecurity is known to be a stressful condition for employees. Less is known about employment insecurity and the ways employees and their families deal with it. This study investigates whether participation in further training is a strategy that employees adopt to reduce perceived employment insecurity. As participation in further training is often costly and time-consuming, we assume that the family context is of importance for the decision to take part in further training. To take account of possible self-selection, we apply a propensity score matching procedure on longitudinal data from the Swiss Household Panel (2004-2013. Three main findings can be emphasized: first, participation in further training is not a strategy adopted particularly by employees who perceive high employment insecurity as they are less likely to train than their secure counterparts. Second, even though further training is not a strategy that is actively adopted, employees who train subsequently report lower levels of perceived employment insecurity. Third, the family context indeed influences the likelihood to train: partnered employees are more likely to train and preschool-aged children act as a constraint on women’s but enhance men’s participation in further training. Yet, in the context of high perceived employment insecurity, children generally reduce their parents’ likelihood to train as the parents may turn to other strategies that reduce perceived employment insecurity.

  1. Study of A-site doping of SrBi4Ti4O15 Bi-layered compounds using micro-Raman spectroscopy

    International Nuclear Information System (INIS)

    Hao, H.; Liu, H.X.; Cao, M.H.; Min, X.M.; Ouyang, S.X.

    2006-01-01

    The temperature-dependent Raman spectra of Mg- and La-doped SrBi 4 Ti 4 O 15 (SBT) were studied in the range 40-590 C. A quantum chemistry calculation was employed to estimate these two substitution states. It was found that A-site doping in this study not only caused multiplicative substitution states, but also the Raman spectra changed with the substitution amount. In a La-doped perovskite-like layer, La would occupy the Bi site when x>0.10 and the 314 and 550 cm -1 modes related to the rotating and tilting of the TiO 6 octahedron firstly became wide and then became sharp. With the increase of the substitution amount, both substitution states of Mg-doped SBT lead to the widening of 270 and 520 cm -1 peaks. (orig.)

  2. Study of A-site doping of SrBi4Ti4O15 Bi-layered compounds using micro-Raman spectroscopy

    Science.gov (United States)

    Hao, H.; Liu, H. X.; Cao, M. H.; Min, X. M.; Ouyang, S. X.

    2006-10-01

    The temperature-dependent Raman spectra of Mg- and La-doped SrBi4Ti4O15 (SBT) were studied in the range 40 590 °C. A quantum chemistry calculation was employed to estimate these two substitution states. It was found that A-site doping in this study not only caused multiplicative substitution states, but also the Raman spectra changed with the substitution amount. In a La-doped perovskite-like layer, La would occupy the Bi site when x>0.10 and the 314 and 550 cm-1 modes related to the rotating and tilting of the TiO6 octahedron firstly became wide and then became sharp. With the increase of the substitution amount, both substitution states of Mg-doped SBT lead to the widening of 270 and 520 cm-1 peaks.

  3. Considerations about using OLAP Cubes and Self-Service BI Tools for BI Systems’ Development

    Directory of Open Access Journals (Sweden)

    Gianina MIHAI

    2017-12-01

    Full Text Available Nowadays, the decision-making process must be an extremely fast one. This is why any decision-maker in a company must obtain information from the multiple available data source used in its transactional systems as easily and as quickly as possible. Business Intelligence (BI systems are the ones that provide the tools necessary for obtaining this information. In this article, we shall present the strengths and weaknesses regarding data analyses in a BI system using OLAP cubes and self-service BI tools.

  4. Quantum interference effects in [Co/Bi]n thin films

    Directory of Open Access Journals (Sweden)

    Athanasopoulos P.

    2014-07-01

    Full Text Available Magnetoconductivity (MC, Δσ(Β, and Hall coefficient, RH(B, measurements have been performed in polycrystalline thin films of Bi(15nm, Bi(10nm/Co(1nm/Bi(10nm trilayer and [Co(0.7nm/Bi(2nm]10 multilayer, grown by magnetron scattering. The temperature dependence of RH(B curves reveal the existence of a second conduction channel below 250K, that can be assigned to surface states. MC measurements between ±0.4T show at 5K an interplay between weak-antilocalization (WAL in Bi and Bi/Co/Bi films and weal-localization (WL in [Co/Bi]10 multilayer.

  5. BI-AMALGAMATION OF SMALL WEAK GLOBAL DIMENSION

    OpenAIRE

    Tamekkante, Mohammed; Bouba, El Mehdi

    2017-01-01

    In this paper, we characterize the bi-Amalgamations of small weakglobal dimension. The new results compare to previous works carried on varioussettings of duplications and amalgamations, and capitalize on recent resultson bi-amalgamations

  6. Bi3+–Pr3+ energy transfer processes and luminescent properties of LuAG:Bi,Pr and YAG:Bi,Pr single crystalline films

    International Nuclear Information System (INIS)

    Zorenko, Y.; Gorbenko, V.; Savchyn, V.; Zorenko, T.; Nikl, M.; Mares, J.A.; Beitlerova, A.; Jary, V.

    2013-01-01

    Absorption, cathodoluminescence, excitation spectra of photoluminescence (PL) and PL decay kinetics were studied at 300 K for the double doped with Bi 3+ –Pr 3+ and separately doped with Bi 3+ and Pr 3+ Lu 3 Al 5 O 12 (LuAG) and Y 3 Al 5 O 12 (YAG) single crystalline film (SCF) phosphors grown by the liquid phase epitaxy method. The emission bands in the UV range arising from the intrinsic radiative transitions of Bi 3+ based centers, and emission bands in the visible range, related to the luminescence of excitons localized around Bi 3+ based centers, were identified both in Bi–Pr and Bi-doped LuAG and YAG SCFs. The energy transfer processes from the host lattice simultaneously to Bi 3+ and Pr 3+ ions and from Bi 3+ to Pr 3+ ions were investigated. Competition between Pr 3+ and Bi 3+ ions in the energy transfer processes from the LuAG and YAG hosts was evidenced. The strong decrease of the intensity of Pr 3+ luminescence both in LuAG:Pr and YAG:Pr SCFs phosphors, grown from Bi 2 O 3 flux, is observed due to the quenching influence of Bi 3+ flux related impurity. Due to overlap of the UV emission band of Bi 3+ centers with the f–d absorption bands of Pr 3+ ions in the UV range and the luminescence of excitons localized around Bi ions with the f–f absorption bands of Pr 3+ ions in the visible range, an effective energy transfer from Bi 3+ ions to Pr 3+ ions takes place in LuAG:Bi,Pr and YAG:Bi,Pr SCFs, resulting in the appearance of slower component in the decay kinetics of the Pr 3+ d–f luminescence. -- Highlights: • Bi and Pr doped film phosphor grown by liquid phase epitaxy method. • Energy transfer from Bi 3+ to Pr 3+ ions. • Strong quenching of the Pr 3+ luminescence by Bi 3+ co-dopant

  7. Factors Influencing BI Data Collection Strategies: An Empirical Investigation

    Science.gov (United States)

    Ramakrishnan, Thiagarajan

    2010-01-01

    The purpose of this dissertation is to examine the external factors that influence an organizations' business intelligence (BI) data collection strategy when mediated by BI attributes. In this dissertation, data warehousing strategies are used as the basis on which to frame the exploration of BI data collection strategies. The attributes include…

  8. Preparation and Faraday rotation of Bi-YIG/PMMA nanocomposite

    Science.gov (United States)

    Fu, H. P.; Hong, R. Y.; Wu, Y. J.; Di, G. Q.; Xu, B.; Zheng, Y.; Wei, D. G.

    Bismuth-substituted yttrium iron garnet (Bi-YIG) nanoparticles (NPs) were prepared by coprecipitation and subsequent heating treatment. Thermal gravity-differential thermal analysis was performed to investigate the thermal behavior of the Bi-YIG precursors and to decide the best annealing temperature. Phase formation of garnet NPs was investigated by X-ray powder diffraction. The size of Bi-YIG NPs was investigated by transmission electron microscopy, and the magnetic properties of Bi-YIG NPs were measured using a vibrating sample magnetometer. The results show that the temperature needed for the transformation of Bi-YIG from the amorphous phase to the garnet phase decreases with increasing Bi content, and Bi-YIG NPs with sizes of 28-78 nm are obtained after heating treatment at 650-1000 °C. The saturation magnetization of Bi-YIG NPs increases as the Bi content increases. Moreover, the Faraday rotation of polymethyl methacrylate (PMMA) slices doped with Bi-YIG NPs was investigated. The results indicate that the angle of Faraday rotation increases with increasing Bi content in PMMA composites, and the maximum value of the figure of merit is 1.46°, which is comparable to the value of a sputtered film. The Bi-YIG NPs-doped PMMA slices are new promising materials for magneto-optical devices.

  9. The Crystal Structure of Cu4Bi4Se9

    DEFF Research Database (Denmark)

    Makovicky, E.; Søtofte, Inger; Karup-Møller, S.

    2002-01-01

    contains three square pyramidal Bi sites, an octahedrally coordinated Bi site as well as two tetrahedrally and two irregularly coordinated Cu sites. The structure is an intergrowth of PbS-like slabs with irregularly configured slabs of Bi pyramids and Cu tetrahedra. It contains covalently bonded Se-2...

  10. High photocatalytic performance of BiOI/Bi{sub 2}WO{sub 6} toward toluene and Reactive Brilliant Red

    Energy Technology Data Exchange (ETDEWEB)

    Li Huiquan [School of Chemistry and Chemical Engineering, Fuyang Normal College, Fuyang 236041 (China); Key Laboratory of Mesoscopic Chemistry of MOE, Jiangsu Provincial Key Laboratory of Nanotechnology, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093 (China); Cui Yumin, E-mail: cuiyumin0908@163.com [School of Chemistry and Chemical Engineering, Fuyang Normal College, Fuyang 236041 (China); Hong Wenshan [School of Chemistry and Chemical Engineering, Fuyang Normal College, Fuyang 236041 (China)

    2013-01-01

    Graphical abstract: When BiOI/Bi{sub 2}WO{sub 6} catalyst was exposed to UV or visible light, the electrons in the valence band of Bi{sub 2}WO{sub 6} would be excited into the conduction band and then injected into the more positive conduction band of BiOI. Therefore, the photoelectrons were generated from Bi{sub 2}WO{sub 6} and transferred across the interface between BiOI and Bi{sub 2}WO{sub 6} to the surface of BiOI, leaving the photogenerated holes in the valence band of Bi{sub 2}WO{sub 6}. In this way, the photoinduced electron-hole pairs were effectively separated. Highlights: Black-Right-Pointing-Pointer BiOI sensitized Bi{sub 2}WO{sub 6} catalysts were successfully prepared by a facile method. Black-Right-Pointing-Pointer The 13.2% BiOI/Bi{sub 2}WO{sub 6} catalyst exhibits higher photoactivities than P25. Black-Right-Pointing-Pointer A possible transfer process of photogenerated carriers was proposed. - Abstract: BiOI sensitized nano-Bi{sub 2}WO{sub 6} photocatalysts with different BiOI contents were successfully synthesized by a facile deposition method at room temperature, and characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) high-resolution transmission electron microscopy (HR-TEM), photoluminescence (PL) spectra, UV-vis diffuse reflection spectroscopy (UV-vis DRS) and Brunauer-Emmett-Teller (BET) surface area measurements. The photocatalytic activity of BiOI/Bi{sub 2}WO{sub 6} was evaluated by the photo-degradation of Reactive Brilliant Red (X-3B) in suspended solution and toluene in gas phase. It has been shown that the BiOI/Bi{sub 2}WO{sub 6} catalysts exhibit a coexistence of both tetragonal BiOI and orthorhombic Bi{sub 2}WO{sub 6} phases. With increasing BiOI content, the absorption intensity of BiOI/Bi{sub 2}WO{sub 6} catalysts increases in the 380-600 nm region and the absorption edge shifts significantly to longer wavelengths as compared to pure Bi{sub 2}WO{sub 6}. The 13.2% BiOI/Bi{sub 2}WO{sub 6} catalyst exhibits

  11. Safety design of Pb-Bi-cooled direct contact boiling water fast reactor (PBWFR)

    International Nuclear Information System (INIS)

    Takahashi, Minoru; Uchida, Shoji; Yamada, Yumi; Koyama, Kazuya

    2008-01-01

    In Pb-Bi-cooled direct contact boiling water small fast reactor (PBWFR), steam is generated by direct contact of feedwater with primary Pb-Bi coolant above the core, and Pb-Bi coolant is circulated by steam lift pump in chimneys. Safety design has been developed to show safety features of PBWFR. Negative void reactivity is inserted even if whole of the core and upper plenum are voided hypothetically by steam intrusion from above. The control rod ejection due to coolant pressure is prevented using in-vessel type control rod driving mechanism. At coolant leak from reactor vessel and feedwater pipes, Pb-Bi coolant level in the reactor vessel required for decay heat removal is kept using closed guard vessel. Dual pipes for feedwater are employed to avoid leak of water. Although there is no concern of loss of flow accident due to primary pump trip, feedwater pump trip initiates loss of coolant flow (LOF). Injection of high pressure water slows down the flow coast down of feedwater at the LOF event. The unprotected loss of flow and heat sink (ATWS) has been evaluated, which shows that the fuel temperatures are kept lower than the safety limits. (author)

  12. Effect of post-sintering treatment on properties of Bi-based high Tc superconductors

    International Nuclear Information System (INIS)

    Nagai, Masayuki; Kozuka, Akira; Morishita, Ken; Nishino, Tadashi; Hattori, Takeo; Takata, Masasuke

    1989-01-01

    A new method to obtain the pure 110K phase in the system Bi-Sr-Ca-Cu-O was examined employing post-sintering treatment. The mixture of Bi 2 O 3 , SrCO 3 , CaCO 3 and CuO with the basic composition of Bi/Sr/Ca/Cu=2/2/1/2 was calcined. The resulting powder was soaked in ethanol containing copper acetate and calcium acetate, the amounts of which were determined to give the composition of Bi/Sr/Ca/Cu=2/2/2/3 after sintering. The resistivity was measured by the d.c. four probe method in a cryostat. The current level was maintained at 50 mA and the voltage drop was determined by averaging the values in the forward and reverse directions. The zero T c ranged from 65 to 69K for the samples after sintering, while that ranged from 69 to 71K for those with post-sintering treatment. The effect of the treatment was not drastic but significant. Modified post-sintering treatment is being examined and the results are reported in the symposium

  13. Resolution and Micro-Doppler Effect in Bi-ISAR System (in English

    Directory of Open Access Journals (Sweden)

    Deng Dong-hu

    2013-06-01

    Full Text Available Compared to the monostatic radar, bistatic radar has many special characteristics because of its spatial complexity. Bistatic Inverse Synthetic Aperture Radar (Bi-ISAR can be employed as a radar imaging tool for obtaining non-cooperative target images. In this study, we first analyze the range and azimuth resolution of a Bi-ISAR system. To analyze this azimuth resolution and its spatial-variety characteristic, a definition called con-Doppler bandwidth is introduced, which helps overcome the difficulty of the target’s viewing angle diversity calculation. Then, a detailed investigation is conducted to study the micro-Doppler effect caused by the vibration and the rotation of the target in the Bi-ISAR system. By comparing the difference in the micro-Doppler effect between the Bi-ISAR system and the Mono-ISAR system, we modify the extended Hough transform to extract the real micro-motion features of the targets. Finally, we provide some simulation results to validate the theoretical derivation and to illustrate the effectiveness of the proposed method.

  14. Evaluation of stress intensity factors for bi-material interface cracks using displacement jump methods

    Science.gov (United States)

    Nehar, K. C.; Hachi, B. E.; Cazes, F.; Haboussi, M.

    2017-12-01

    The aim of the present work is to investigate the numerical modeling of interfacial cracks that may appear at the interface between two isotropic elastic materials. The extended finite element method is employed to analyze brittle and bi-material interfacial fatigue crack growth by computing the mixed mode stress intensity factors (SIF). Three different approaches are introduced to compute the SIFs. In the first one, mixed mode SIF is deduced from the computation of the contour integral as per the classical J-integral method, whereas a displacement method is used to evaluate the SIF by using either one or two displacement jumps located along the crack path in the second and third approaches. The displacement jump method is rather classical for mono-materials, but has to our knowledge not been used up to now for a bi-material. Hence, use of displacement jump for characterizing bi-material cracks constitutes the main contribution of the present study. Several benchmark tests including parametric studies are performed to show the effectiveness of these computational methodologies for SIF considering static and fatigue problems of bi-material structures. It is found that results based on the displacement jump methods are in a very good agreement with those of exact solutions, such as for the J-integral method, but with a larger domain of applicability and a better numerical efficiency (less time consuming and less spurious boundary effect).

  15. Significance and Application of Digital Breast Tomosynthesis for the BI-RADS Classification of Breast Cancer.

    Science.gov (United States)

    Cai, Si-Qing; Yan, Jian-Xiang; Chen, Qing-Shi; Huang, Mei-Ling; Cai, Dong-Lu

    2015-01-01

    Full-field digital mammography (FFDM) with dense breasts has a high rate of missed diagnosis, and digital breast tomosynthesis (DBT) could reduce organization overlapping and provide more reliable images for BI-RADS classification. This study aims to explore application of COMBO (FFDM+DBT) for effect and significance of BI-RADS classification of breast cancer. In this study, we selected 832 patients who had been treated from May 2013 to November 2013. Classify FFDM and COMBO examination according to BI-RADS separately and compare the differences for glands in the image of the same patient in judgment, mass characteristics display and indirect signs. Employ Paired Wilcoxon rank sum test was used in 79 breast cancer patients to find differences between two examine methods. The results indicated that COMBO pattern is able to observe more details in distribution of glands when estimating content. Paired Wilcoxon rank sum test showed that overall classification level of COMBO is higher significantly compared to FFDM to BI-RADS diagnosis and classification of breast (PBI-RADS classification in breast cancer in clinical.

  16. Implementing public employment policy

    DEFF Research Database (Denmark)

    Larsen, Flemming; Bredgaard, Thomas

    disciplining of the unemployed (work first) (cf.Bredgaard & Larsen, 2005; Sol & Westerweld, 2005). It is, however, remarkable that in the research field there seems to be a division of labour so that changes in public administration and changes in the substance of employment policies are dealt with separately......Like most other areas within welfare policy, the employment and social policy areas are undergoing far-reaching changes in many countries. Partly in the shape of new forms of governance inspired by New Public Management (NPM), partly through new policies oriented towards activation and stronger....... But there is an interesting question to investigate here: whether and if so how, NPM-inspired reforms are related to changes in employment policy towards a work-first approach? Are changes in public management systems created as deliberate policy changes, or do they bring about more indirect and unintended policy changes...

  17. ProUni e UAB como estratégias de EAD na expansão do ensino superior ProUni and UAB as EAD (distance education stategies for higher education expansion

    Directory of Open Access Journals (Sweden)

    Stella Cecília Duarte Segenreich

    2009-08-01

    Full Text Available Neste texto é feita uma análise dos programas Universidade para Todos (ProUni e Universidade Aberta do Brasil (UAB como estratégias de Educação a Distância promovidas pelo governo Lula na expansão e democratização do Ensino Superior. Questões tais como o número elevado de pólos, sua dispersão e distanciamento da sede da instituição promotora dos cursos, assim como a falta de avaliação da efetiva qualidade de ensino são desafios colocados ao ProUni, especificamente. No que se refere aos dois programas em conjunto, surgiram questões referentes ao modelo de pólo presencial adotado e ao conceito de tutoria e seu impacto na configuração do corpo docente das universidades. Constatou-se, ainda, um avanço significativo no reconhecimento de que a educação a distância não se resume a uma estratégia de mercantilização e privatização do ensino e que precisa ser pesquisada intensamente em termos de sua utilização como política de Estado e em termos das novas questões de ordem institucional e pedagógica que suscita.This text aims at analyzing the programs of University for All (ProUni and Brazilian Open University (UAB as products of the Lula government higher education expansion and democratization policy. Some issues like the great number of poles, their dispersion and distance from the headquarters of the promoting institution, as well as the lack of an evaluation mechanism to assess the quality of the education offered by the participant institutions, are challenges faced specifically by ProUni. As far as those two programs are concerned, some issues emerged related to the model of the classroom instruction pole which has been adopted and the concept of tutoring and its impact on the configuration of the teaching staff of universities. Also, significant improvement has been verified in the recognition that distance education does not limit itself to a commercial and privatizing educational strategy, but it must be

  18. Role of vanadium in Bi-2223 ceramics

    Indian Academy of Sciences (India)

    Previous reports ([1–7] and also, [9]) on V-substituted samples of Bi2Sr2Ca2Cu3Os have mostly pointed out that V ... Two series of V-substituted samples were prepared by partial replacement of V at two different sites; viz. the ..... also evaluated the phase composition on the basis of our susceptibility plots. This has also.

  19. Business Intelligence: Magnum B.I.

    Science.gov (United States)

    Briggs, Linda L.

    2007-01-01

    Business intelligence (BI) tools offer schools the ability to look beyond a routine statistic, such as what percentage of students have passed a given test. Through data analysis, schools can view specific scores for a select group of students, for example, and compare that data to other groups, classes, or teachers. That is the kind of…

  20. A scanning bi-static SODAR

    Energy Technology Data Exchange (ETDEWEB)

    Behrens, P; Bradley, S [Physics Department, Auckland University, 38 Princes Street, Auckland (New Zealand); Hunerbein, S von [Acoustics Department, Newton Building, University of Salford, Greater Manchester M5 4WT (United Kingdom)

    2008-05-01

    Field results are given from a bi-static SODAR which uses a single central vertical transmission and three distributed microphone array receivers. Fourier transform delay methods are applied to data sampled from each microphone to retrospectively scan in angle and follow the transmitted pulse. Advantages of sampling a narrow atmospheric column, rather than distributed volumes are discussed.

  1. A scanning bi-static SODAR

    International Nuclear Information System (INIS)

    Behrens, P; Bradley, S; Hunerbein, S von

    2008-01-01

    Field results are given from a bi-static SODAR which uses a single central vertical transmission and three distributed microphone array receivers. Fourier transform delay methods are applied to data sampled from each microphone to retrospectively scan in angle and follow the transmitted pulse. Advantages of sampling a narrow atmospheric column, rather than distributed volumes are discussed

  2. The effects of solvent on photocatalytic properties of Bi2WO6/TiO2 heterojunction under visible light irradiation

    Science.gov (United States)

    Guo, Qiyao; Huang, Yunfang; Xu, Hui; Luo, Dan; Huang, Feiyue; Gu, Lin; Wei, Yuelin; Zhao, Huang; Fan, Leqing; Wu, Jihuai

    2018-04-01

    Bi2WO6/TiO2 heterojunction photocatalysts with two different microstructures were controllably fabricated via a facile two-step synthetic route. XRD, XPS, SEM, TEM, BET-surface, DRS, PL spectra, photoelectrochemical measurement (Mott-Schottky), and zeta-potential analyzer were employed to clarify structural and morphological characteristics of the obtained products. The results showed that Bi2WO6 nanoparticles/nanosheets grew on the primary TiO2 nanorods. The TiO2 nanorods used as a synthetic template inhibit the growth of Bi2WO6 crystals along the c-axis, resulting in Bi2WO6/TiO2 heterostructure with one-dimensional (1D) morphology. The photocatalytic properties of Bi2WO6/TiO2 heterojunction photocatalysts were strongly dependent on their shapes and structures. Compared with bare Bi2WO6 and TiO2, Bi2WO6/TiO2 composite have stronger adsorption ability and better visible light photocatalytic activities towards organic dyes. The Bi2WO6/TiO2 composite prepared in EG solvent with optimal Bi:Ti ratio of 2:12 (S-TB2) showed the highest photocatalytic activity, which could totally decompose Rhodamine B within 10 min upon irradiation with visible light (λ > 422 nm), and retained the high photocatalytic performance after five recycles, confirming its stability and practical usability. The results of PL indicated that Bi2WO6 and TiO2 could combine well to form a heterojunction structure which facilitated electron-hole separation, and lead to the increasing photocatalytic activity.

  3. Employment certificates on HRT

    CERN Multimedia

    HR Department

    2008-01-01

    As part of the ongoing drive to simplify and streamline administrative procedures and processes, the IT and HR Departments have made employment certificates available on a self-service basis on the HRT application, in the main menu under "My self services". All members of the personnel can thus obtain a certificate of employment or association, in French or in English, for the present or past contractual period. The HR Department’s Records Office remains responsible for issuing any special certificates that might be required. IT-AIS (Administrative Information Services) HR-SPS (Services, Procedures & Social) Records Office – Tel. 73700

  4. Radiation protection - the employer

    International Nuclear Information System (INIS)

    Goldfinch, E.

    1983-01-01

    A brief report is given of a paper presented at the symposium on 'Radiation and the Worker - where do we go from here' in London 1983. The paper concerned the employers' viewpoint on the draft of the proposed Ionising Radiations Regulations in the Health and Safety Commission Consultative Document. It was concluded that there was already a very good standard of radiological protection in the UK and that any improvements could therefore only be fringe improvements, although the cost to the employer of introducing and implementing the new proposed Regulations was bound to be high. (U.K.)

  5. Method of producing superconducting fibers of bismuth strontium calcium copper oxide (Bi(2212) and Bi(2223))

    Science.gov (United States)

    Schwartzkopf, Louis A.

    1991-10-01

    Fibers of Bi(2212) have been produce by pendant drop melt extraction. This technique involves the end of a rod of Bi(2212) melted with a hydrogen-oxygen torch, followed by lowering onto the edge of a spinning wheel. The fibers are up to 15 cm in length with the usual lateral dimensions, ranging from 20 um to 30 um. The fibers require a heat treatment to make them superconducting.

  6. DIALIGN: multiple DNA and protein sequence alignment at BiBiServ.

    OpenAIRE

    Morgenstern, Burkhard

    2004-01-01

    DIALIGN is a widely used software tool for multiple DNA and protein sequence alignment. The program combines local and global alignment features and can therefore be applied to sequence data that cannot be correctly aligned by more traditional approaches. DIALIGN is available online through Bielefeld Bioinformatics Server (BiBiServ). The downloadable version of the program offers several new program features. To compare the output of different alignment programs, we developed the program AltA...

  7. DAYA SAING EKSPOR TUNA KALENG INDONESIA DI UNI EROPA TAHUN 2003-2013

    Directory of Open Access Journals (Sweden)

    Umar Wahono

    2017-06-01

    Full Text Available Perbedaan tarif yang diberikan antara Indonesia yang lebih tinggi sebesar 20.5% dibandingkan dengan negara pesaing utamanya yang tergabung dalang Africa, Caribbean, Pasific (ACP Countries dengan pelayanan tarif impor hingga 0% ke pasar Uni Eropa (UE. Keadaan ini mampu menyebabkan menghilangnya distorsi perbedaan harga sesungguhnya yang seharusnya menjadi keuntungan lebih atas keunggulan komparatif yang dimiliki. Hal ini mampu melemahkan daya saing komoditi ekspor akibat dampak kenaikan harga terhadap tarif. Penelitian ini bertujuan untuk gambaran daya saing komoditas tuna kaleng Indonesia terhadap negara pesaingnya dipasar UE pada periode 2003-2013. Metode yang digunakan dalam penelitin ini adalah metode Revealed Comparative Advantage (RCA yang kemudian nilai RCA dikomparasikan tiap-tiap negara pengekspor utama tuna kaleng di pasar UE untuk melihat posisi daya saing relatifnya. Sedangkan untuk mendekomposisikan determinan pertumbuhan ekspor tuna kaleng Indonesia ke UE digunankan metode Constant Market Share (CMS. Hasil perhitungan nilai RCA tuna kaleng Indonesia periode 2003-2013 di pasar UE memiliki daya saing dengan rata-rata nilai RCA 4.27. Namun masih dibawah rata-rata nilai RCA negara ACP Countries. Perbedaan pelayanan tarif impor oleh UE untuk komoditas tuna kaleng Indonesia tidak berdampak terhadap penurunan daya saing. The difference between the rates given Indonesia which is higher by 20.5% compared to its main competitor countries that joined the mastermind Africa, Caribbean, Pacific (ACP Countries with service import tariffs to 0% to the European Union (EU. This situation is capable of causing the disappearance of the distortion of the true price difference should be more advantages over comparative advantage. It is capable of undermining the competitiveness of export commodities due to the impact of price increases on tariffs. This study aims to illustrate the competitiveness of commodities Indonesian canned tuna to the EU market of

  8. A Unified tool to estimate Distances, Ages, and Masses (UniDAM) from spectrophotometric data

    Science.gov (United States)

    Mints, Alexey; Hekker, Saskia

    2017-08-01

    Context. Galactic archaeology, the study of the formation and evolution of the Milky Way by reconstructing its past from its current constituents, requires precise and accurate knowledge of stellar parameters for as many stars as possible. To achieve this, a number of large spectroscopic surveys have been undertaken and are still ongoing. Aims: So far consortia carrying out the different spectroscopic surveys have used different tools to determine stellar parameters of stars from their derived effective temperatures (Teff), surface gravities (log g), and metallicities ([Fe/H]); the parameters can be combined with photometric, astrometric, interferometric, or asteroseismic information. Here we aim to homogenise the stellar characterisation by applying a unified tool to a large set of publicly available spectrophotometric data. Methods: We used spectroscopic data from a variety of large surveys combined with infrared photometry from 2MASS and AllWISE and compared these in a Bayesian manner with PARSEC isochrones to derive probability density functions (PDFs) for stellar masses, ages, and distances. We treated PDFs of pre-helium-core burning, helium-core burning, and post helium-core burning solutions as well as different peaks in multimodal PDFs (I.e. each unimodal sub-PDF) of the different evolutionary phases separately. Results: For over 2.5 million stars we report mass, age, and distance estimates for each evolutionary phase and unimodal sub-PDF. We report Gaussian, skewed, Gaussian, truncated Gaussian, modified truncated exponential distribution or truncated Student's t-distribution functions to represent each sub-PDF, allowing us to reconstruct detailed PDFs. Comparisons with stellar parameter estimates from the literature show good agreement within uncertainties. Conclusions: We present UniDAM, the unified tool applicable to spectrophotometric data of different surveys, to obtain a homogenised set of stellar parameters. The unified tool and the tables with

  9. Kajian Keselamatan dan Kesehatan Kerja Bengkel di Jurusan Pendidikan Teknik Sipil dan Perencanaan Fakultas Teknik Uny

    Directory of Open Access Journals (Sweden)

    Nur Hidayat

    2016-05-01

    Full Text Available The objective of this study was to analyse: (1 the plan (2 the implementation, and (3 the evaluation of the Occupational Safety and Health (OSH management in the workshop of the Department of Civil Engineering and Planning Education, Faculty of Engineering, Yogyakarta State University (YSU. This study was categorised into descriptive study that scientifically explained the workplace environment of the workshop specifically in terms of the OSH management. The data collection techniques used observations, interviews and questionnaires. The data of this study was analysed descriptively. This study presented the detailed descriptions of the collected data in the field. The results revealed (1 It is crucial to develop a more systematic OSH management plan in the workshop of the Department of Civil Engineering and Planning Education, Faculty of Engineering, YSU (2 the planning policies and the implementation of the OSH management need a continual improvement  and (3 the evaluation of the OSH management should be conducted simultaneously by the stakeholders, the lecturers and the technicians. (4 The OSH policy in the practices should be properly organised to promote the OSH culture in the workshop. (5 The OSH management control and review were prioritised for fostering the effectiveness of the OSH management implementation. Penelitian ini bertujuan untuk mengetahui perencanaan, pelaksanaan, dan  evaluasi Keselamatan dan Kesehatan Kerja (K3 di Bengkel Jurusan Pendidikan Teknik Sipil dan Perencanaan FT UNY. Penelitian ini merupakan penelitian deskriptif (descriptive reasearch yang memaparkan secara ilmiah keadaan di lingkungan bengkel khususnya mengenai aspek K3. Metode pengumpulan data menggunakan observasi, wawancara, dan angket. Analisis data menggunakan analisis deskriptif. Penelitian ini mendeskripsikan secara detail terhadap apa yang ditemukan dalam pengambilan data. Hasil penelitian ini menunjukkan bahwa

  10. El tipo de unión y el aborto: una comparación generacional para México

    Directory of Open Access Journals (Sweden)

    Julieta Quilodrán Salgado

    2004-01-01

    Full Text Available Con el presente trabajo se pretende incorporar al estudio del aborto en México la perspectiva generacional y la distinción según el tipo de unión, dos dimensiones que no han sido consideradas en los estudios publicados hasta la fecha. Los datos utilizados corresponden a los de la Encuesta Nacional de la Dinámica Demográfica levantada en 1997. Entre los resultados obtenidos destaca el relativo a la reducción que experimentó el aborto entre las jóvenes (menores de 30 años de las generaciones nacidas a fines de los años cuarenta y aquellas que lo hicieron veinte años después, a fines de los sesenta. La distinción por tipo de unión nos permite atribuir esta disminución a las mujeres casadas, que casi exclusivamente eran quienes lo practicaban, y evaluar su impacto reductivo sobre la fecundidad en 1.2 nacimientos evitados en las generaciones mayores y 0.5 en las mas jóvenes. Las mujeres en uniones libres no superan los 0.6 nacimientos evitados en ninguna de las dos generaciones. Al aplicar el factor de separación propuesto, estas diferencias se traducen en relaciones de un aborto espontáneo por casi seis inducidos entre las casadas de más edad y solamente uno de cada dos entre las más jóvenes. Finalmente la distribución según el método anticonceptivo utilizado nos indica que las jóvenes en unión libre están más eficazmente protegidas que las casadas.

  11. Disability Employment 101

    Science.gov (United States)

    US Department of Education, 2007

    2007-01-01

    Business is about productivity and maintaining a competitive advantage. To do this, business needs qualified workers. Hiring people with disabilities adds value to a business and will attract new customers. Disability is not inability. Employers can make sound business decisions and gain a competitive advantage by using this guide to increase the…

  12. Discrimination in Employment

    Science.gov (United States)

    Abzug, Bella

    1975-01-01

    This testimony, before a public hearing of the New York City Commission on Human Rights in May 1974, expressly focuses on discrimination in employment, asserting that this has had the most direct effect on minorities and women in the country; while legal protections have grown stronger, they have not been used effectively. (Author/JM)

  13. Governing EU employment policy

    DEFF Research Database (Denmark)

    Sørensen, Eva; Triantafillou, Peter; Damgaard, Bodil

    2015-01-01

    In the European Union (EU), employment policy is a prerogative of the member states. Therefore the EU's ability to govern in this area depends on its capability to involve national governments and relevant stakeholders in a collaborative effort to formulate and implement shared policy objectives....... of collaboration, the implementation phase mainly consists in the less demanding forms of cooperation and coordination....

  14. Employment Relations in Denmark

    DEFF Research Database (Denmark)

    Madsen, Jørgen Steen; Due, Jesper Jørgen; Andersen, Søren Kaj

    2011-01-01

    Jørgen Steen Madsen, Jesper Due og Søren Kaj Andersen har skrevet et kapitel om udviklingen i dansk arbejdsmarkedsregulering til bogen International and Comparative Employment Relations, redigeret af Greg Bamber, Russell Lansbury og Nick Wailes. Bogen indeholder bidrag, der præsenterer og...

  15. Employment Challenges in Kenya

    African Journals Online (AJOL)

    Dr Kazungu

    of foreigners in rural trade, use of work permits to limit employment of expatriates, .... as social and trade union protection, job security, and wage negotiations to the worker. .... are Republic of Korea (1960–2001); Malaysia (1967–1997); Malta ...

  16. Transitional Employment Programs.

    Science.gov (United States)

    Dulle, Paul J.; And Others

    The paper examines the need and implementation of transitional employment programs for handicapped youth. Effects on the handicapped of future automation are considered along with the need for school-business cooperation to prepare for the future. The importance of initial success in any innovation is noted. A Chicago transitional employment…

  17. Policies for full employment

    DEFF Research Database (Denmark)

    de Koning, Jaap; Layard, Richard; Nickel, Stephen

    European unemployment is too high, and employment is too low. Over 7½ per cent of Europe's workforce is unemployed, and only two thirds of people aged 15-64 are in work. At the Lisbon summit two years ago the heads of government set the target that by 2010 the employment rate should rise from 64...... per cent to at least 70 per cent. And for older workers between 55 and 64 the employment rate should rise from 38 per cent to at least one half. These are ambitious targets. They will require two big changes: more people must seek work, and among those seeking work a higher proportion must get a job....... So we need higher participation, and (for full employment) we need a much lower unemployment rate. Can it be done? A mere glance at the experience of different European countries shows that it can. As Table 1 shows, four E.U. countries already exceed the overall target for 2010 (Britain, Denmark...

  18. Implementing the employability agenda

    DEFF Research Database (Denmark)

    Lee, Donna; Snaith, Holly Grace; Foster, Emma

    2014-01-01

    whether, and how, colleagues in politics and international relations (IR) had taken ownership of student employability at the level of the curriculum. In the article, the key findings of the research are summarised. There is also discussion of the (sometimes troubling) professional implications...

  19. Industrialisation, Exports and Employment.

    Science.gov (United States)

    Sabolo, Yves

    1980-01-01

    After reviewing trends in industrial production, exports, and employment in the Third World since 1960, the author discusses industrialization strategies based on the local processing of raw materials for export. Such processing has proved to be a major factor in job creation. (Author/SK)

  20. The Employment Mismatch

    Science.gov (United States)

    Fischer, Karin

    2013-01-01

    Employers value a four-year college degree, many of them more than ever. Yet half of those surveyed recently by "The Chronicle" and American Public Media's "Marketplace" said they had trouble finding recent graduates qualified to fill positions at their company or organization. Nearly a third gave colleges just fair to poor marks for producing…

  1. Perfil de mercado de la Unión Europea y los países de la EFTA

    OpenAIRE

    Casadiego, Vanessa; Villegas, Melissa; Beltrán, Paula Daniela

    2015-01-01

    El presente trabajo de grado busca evaluar el perfil del mercado de la Unión Europea y los países de la EFTA para identificar las oportunidades comerciales de Colombia, más específicamente en los siguientes países: Suiza, Noruega, Liechtenstein, Islandia, Republica Checa, Rumania y Suecia. A través de esta investigación se realizó un análisis de los 25 productos más exportados de Colombia a cada uno de los países estudiados, tomando en cuenta sus códigos arancelarios. Adicionalmente, se e...

  2. Teaching and learning in the international classroom: quality principles and lessons learned from the IntlUni project

    DEFF Research Database (Denmark)

    Lauridsen, Karen M.; Cozart, Stacey Marie

    2015-01-01

    , and expectations about the teaching and learning processes and outcomes. Certainly, many teachers in these settings are meeting the challenges of this diversity, and some are leveraging it to improve student learning and intercultural competence. Nevertheless, the work of IntlUni, an Erasmus Academic Network (2012......As higher education in Europe becomes increasingly internationalized, many higher education institutions are facing new diversity issues as well as opportunities arising from educational settings where students and teachers often have different first languages, cultural backgrounds...... of principles for quality teaching and learning in the international classroom, developed by the network, as well as a number of the important lessons learned...

  3. Sistemas adhesivos autograbadores, resistencia de unión y nanofiltración: una revisión

    OpenAIRE

    Parra Lozada, Maritza; Garzón Rayo, Herney

    2012-01-01

    Los sistemas adhesivos autograbadores han permitido mejorar los procedimientos clínicos tanto en la evolución de los componentes y su funcionamiento, como en la disminución del tiempo operatorio de aplicación de cada uno de ellos. Estos sistemas han sido sometidos en la última década a constantes pruebas clínicas y de laboratorio, con el objetivo de valorar su desempeño. Sus múltiples ventajas contrastan con su baja efectividad en cuanto resistencia de unión y su permeabilidad que permite for...

  4. Entre o mercado e a sociedade : o sindicalismo da União Geral dos Trabalhadores (UGT)

    OpenAIRE

    Patrícia Rocha Lemos

    2014-01-01

    Resumo: Nossa pesquisa teve como objetivo compreender a estratégia sindical empreendida pela União Geral dos Trabalhadores (UGT). Criada em 2007, no contexto de reorganização sindical que marcou o governo Lula, a partir de uma fusão entre a CGT, a CAT e a SDS, a UGT articula elementos do sindicalismo do qual se origina (como conciliação de interesses, prioridade à negociação, defesa da estrutura sindical) com uma nova tendência que busca, através da participação nos espaços institucionais, of...

  5. La immigración desde el Magreb. Un reto para la Unión Europea

    Directory of Open Access Journals (Sweden)

    Gloria Inés Ospina

    2015-10-01

    Full Text Available Para la Unión Europea, los flujos de emigración irregular procedentes del Mediterráneo han sido una de las piedras donde han tropezado toda la serie de directivas que respecto al tema migratorio y el espacio Schengen se han emitido desde Bruselas a lo largo de los últimos 13 años. El artículo analiza el crecimiento de los flujos migratorios dirigidos hacia la UE tras las revoluciones árabes, las debilidades del acuerdo Schengen y las medidas reactivas adoptadas por la UE, proponiendo algunas recomendaciones.

  6. Ga and Pt NMR study of UPtGa sub 5 and UNiGa sub 5

    CERN Document Server

    Kato, H; Tokunaga, Y; Tokiwa, Y; Ikeda, S; Onuki, Y; Kambe, S; Walstedt, R E

    2003-01-01

    Ga and Pt NMR measurements have been carried out for two isomorphs compounds, UPtGa sub 5 and UNiGa sub 5 , which exhibit different magnetic structures below T sub N. Knight shift K measurements in the paramagnetic region are reported here. The transferred hyperfine coupling constants at Ga and Pt sites are determined. The temperature independent part K sub 0 of K, which probes the conduction electron polarization at the ligand site, has been successfully evaluated. A nearly identical conduction electron structure in the paramagnetic region is suggested for these two compounds. The origin of the different magnetic structures is discussed.

  7. Y. Laberge on Frédéric Salmon's Atlas historique des États-Unis.

    Directory of Open Access Journals (Sweden)

    2010-06-01

    Full Text Available Frédéric Salmon, Atlas historique des États-Unis de 1783 à nos jours. Paris: Armand Colin, 2008. Pp.127. ISBN-13: 978-2200347604  This new, cultural, historical atlas of United States was entirely conceived by a French geographer named Frédéric Salmon; this is not a mere collection of old or already existing maps, but rather a brand new group of unique maps related to the geography, history and demographics of the USA, from the late 18th century to the early 21st century. It should not be mix...

  8. La Unión Europea y el proceso de revisión constitucional en Francia (1992-2008

    Directory of Open Access Journals (Sweden)

    Andoni Perez Ayala

    2009-05-01

    Full Text Available Se estudia en este trabajo el intenso proceso de revisión constitucional que ha tenido lugar en Francia desde los comienzos de la pasada década (1992 como consecuencia del desarrollo del proceso de integración europea en este último periodo. Se examinan, en particular, las siete revisiones constitucionales que, entre 1992 y 2008, se han sucedido en el país vecino con el fin de hacer compatible la Constitución francesa con el nuevo marco supraestatal europeo que vienen definiendo los sucesivos Tratados de la Unión Europea

  9. El coste de oportunidad como determinante del autoempleo en la Unión Europea (UE 25)

    OpenAIRE

    Luis Miguel Zapico Aldeano; Mariano Nieto Antolín; María Felisa Muñoz Doyague

    2008-01-01

    Este trabajo pretende introducir en el análisis de la motivación de la actividad emprendedora el potencial efecto negativo del coste de oportunidad asociado a la misma. Para lograr este objetivo se aplicó un análisis de ecuaciones estructurales con la aproximación Partial Least Squares (PLS) sobre una muestra de ciudadanos de la Unión Europea agrupados por países, para el periodo 2004. Los resultados muestran que la motivación emprendedora presenta una estructura interna dual formada por dos ...

  10. Fuzzy Bi-level Decision-Making Techniques: A Survey

    Directory of Open Access Journals (Sweden)

    Guangquan Zhang

    2016-04-01

    Full Text Available Bi-level decision-making techniques aim to deal with decentralized management problems that feature interactive decision entities distributed throughout a bi-level hierarchy. A challenge in handling bi-level decision problems is that various uncertainties naturally appear in decision-making process. Significant efforts have been devoted that fuzzy set techniques can be used to effectively deal with uncertain issues in bi-level decision-making, known as fuzzy bi-level decision-making techniques, and researchers have successfully gained experience in this area. It is thus vital that an instructive review of current trends in this area should be conducted, not only of the theoretical research but also the practical developments. This paper systematically reviews up-to-date fuzzy bi-level decisionmaking techniques, including models, approaches, algorithms and systems. It also clusters related technique developments into four main categories: basic fuzzy bi-level decision-making, fuzzy bi-level decision-making with multiple optima, fuzzy random bi-level decision-making, and the applications of bi-level decision-making techniques in different domains. By providing state-of-the-art knowledge, this survey paper will directly support researchers and practitioners in their understanding of developments in theoretical research results and applications in relation to fuzzy bi-level decision-making techniques.

  11. Internal friction behavior of liquid Bi-Sn alloys

    International Nuclear Information System (INIS)

    Wu Aiqing; Guo Lijun; Liu Changsong; Jia Erguang; Zhu Zhengang

    2005-01-01

    Pure Bi and Sn and four Bi-Sn alloys distributed on the entire concentration range were selected for internal-friction investigation over a wide temperature range. There exist two peaks in the plots of internal friction versus temperature for liquid Sn, Bi-Sn60 and Bi-Sn90 alloys, one peak being located at about 480 - bar Cand another at about 830 - bar C. Only a single internal-friction peak at about 830 - bar C occurs in liquid Bi-Sn43 (eutectic composition). No internal-friction peak appears in liquid Bi-Sn20 alloy and pure Bi. The height of the internal-friction peaks depends on the content of Sn. The present finding suggests that Sn-rich Bi-Sn alloys may inherit the internal-friction behaviors of pure Sn, whereas Bi-rich Bi-Sn alloy seems to be like pure Bi. The position of the internal-friction peaks is frequency dependent, which resembles the internal-friction feature in structure transition in solids

  12. Internal friction behavior of liquid Bi-Sn alloys

    Energy Technology Data Exchange (ETDEWEB)

    Wu Aiqing [Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences, P.O. Box 1129, Hefei 230031 (China); Guo Lijun [Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences, P.O. Box 1129, Hefei 230031 (China); Liu Changsong [Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences, P.O. Box 1129, Hefei 230031 (China); Jia Erguang [Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences, P.O. Box 1129, Hefei 230031 (China); Zhu Zhengang [Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences, P.O. Box 1129, Hefei 230031 (China)]. E-mail: zgzhu@issp.ac.cn

    2005-12-01

    Pure Bi and Sn and four Bi-Sn alloys distributed on the entire concentration range were selected for internal-friction investigation over a wide temperature range. There exist two peaks in the plots of internal friction versus temperature for liquid Sn, Bi-Sn60 and Bi-Sn90 alloys, one peak being located at about 480{sup -}bar Cand another at about 830{sup -}bar C. Only a single internal-friction peak at about 830{sup -}bar C occurs in liquid Bi-Sn43 (eutectic composition). No internal-friction peak appears in liquid Bi-Sn20 alloy and pure Bi. The height of the internal-friction peaks depends on the content of Sn. The present finding suggests that Sn-rich Bi-Sn alloys may inherit the internal-friction behaviors of pure Sn, whereas Bi-rich Bi-Sn alloy seems to be like pure Bi. The position of the internal-friction peaks is frequency dependent, which resembles the internal-friction feature in structure transition in solids.

  13. Facile synthesis of flower-like BiOI hierarchical spheres at room temperature with high visible-light photocatalytic activity

    International Nuclear Information System (INIS)

    Wang, Xiao-jing; Li, Fa-tang; Li, Dong-yan; Liu, Rui-hong; Liu, Shuang-jun

    2015-01-01

    Graphical abstract: - Highlights: • Flower-like BiOI hierarchical sphere is obtained in the presence of ethylene glycol. • A template free hydrolysis route is employed at room temperature. • Ethylene glycol plays an important role in assembling BiOI nanoflakes to form spheres. • The BiOI sphere shows high visible-light photocatalytic activity and good stability. - Abstract: Flower-like BiOI hierarchical spheres are prepared at room temperature via a template free route simply by dropping water into ethylene glycol (EG) solution containing reactants based on the hydrolysis and oriented assembly roles of water and EG, respectively. The BiOI samples are characterized by X-ray diffraction (XRD), nitrogen adsorption/desorption, emission scanning electron microscopy (SEM), UV–Vis diffuse reflectance spectra (UV–Vis DRS), X-ray photoelectron spectroscopy (XPS), and transmission electron microscopy (TEM). The photocatalytic reaction rate constant of the as-prepared BiOI hierarchical spheres is 15.8, 13.3, and 2.0 times that of BiOI nanoflakes obtained in the absence of EG in degradation of anionic dye (methyl orange), cationic dye (methylene blue), and colorless target pollutant (phenol), respectively, under the visible-light irradiation, which can be attributed to its unique flower-like structure for utilization of light, small crystal size, and large specific surface area

  14. Mechanical analysis of non-uniform bi-directional functionally graded intelligent micro-beams using modified couple stress theory

    Science.gov (United States)

    Bakhshi Khaniki, Hossein; Rajasekaran, Sundaramoorthy

    2018-05-01

    This study develops a comprehensive investigation on mechanical behavior of non-uniform bi-directional functionally graded beam sensors in the framework of modified couple stress theory. Material variation is modelled through both length and thickness directions using power-law, sigmoid and exponential functions. Moreover, beam is assumed with linear, exponential and parabolic cross-section variation through the length using power-law and sigmoid varying functions. Using these assumptions, a general model for microbeams is presented and formulated by employing Hamilton’s principle. Governing equations are solved using a mixed finite element method with Lagrangian interpolation technique, Gaussian quadrature method and Wilson’s Lagrangian multiplier method. It is shown that by using bi-directional functionally graded materials in nonuniform microbeams, mechanical behavior of such structures could be affected noticeably and scale parameter has a significant effect in changing the rigidity of nonuniform bi-directional functionally graded beams.

  15. Facile synthesis of BiOF/Bi{sub 2}O{sub 3}/reduced graphene oxide photocatalyst with highly efficient and stable natural sunlight photocatalytic performance

    Energy Technology Data Exchange (ETDEWEB)

    Hu, Limin; Dong, Shuying; Li, Qilu; Feng, Jinglan; Pi, Yunqing; Liu, Menglin [School of Environment, Henan Normal University, Key Laboratory for Yellow River and Huai River Water Environmental and Pollution Control, Ministry of Education, Henan Key Laboratory for Environmental Pollution Control, Xinxiang, Henan 453007 (China); Sun, Jingyu, E-mail: sunjy-cnc@pku.edu.cn [Center for Nanochemistry (CNC), College of Chemistry and Molecular Engineering, Peking University, Beijing 100871 (China); Sun, Jianhui, E-mail: sunjh@htu.cn [School of Environment, Henan Normal University, Key Laboratory for Yellow River and Huai River Water Environmental and Pollution Control, Ministry of Education, Henan Key Laboratory for Environmental Pollution Control, Xinxiang, Henan 453007 (China)

    2015-06-05

    Highlights: • A dual Bi-based ball-shaped material BiOF/Bi{sub 2}O{sub 3} were facilely synthesized. • The composition effect of BiOF/Bi{sub 2}O{sub 3}/RGO hybrid were probed for the first time. • The photocatalytic performances were evaluated upon natural sunlight irradiation. • The composites showed a twofold augmentation in the degradation efficiency. • The hybrid photocatalyst can be easily recycled for three times. - Abstract: A facile and efficient route for the controllable synthesis of BiOF/Bi{sub 2}O{sub 3} nanostructures by hydrolysis method was reported, where the as-prepared BiOF/Bi{sub 2}O{sub 3} was subsequently incorporated with reduced graphene oxide (RGO) sheets to form BiOF/Bi{sub 2}O{sub 3}/RGO composites. The obtained BiOF/Bi{sub 2}O{sub 3} and BiOF/Bi{sub 2}O{sub 3}/RGO composites were well characterized with the aid of various techniques to probe their crystallographic, morphological, chemical and optical properties. Photocatalytic capacities of the pure BiOF/Bi{sub 2}O{sub 3} and BiOF/Bi{sub 2}O{sub 3}/RGO composites have been investigated by the degradation of Rhodamine B (RhB)-contained wastewater under natural sunlight irradiation. A twofold augmentation of degradation efficiency was in turn observed for BiOF/Bi{sub 2}O{sub 3}/RGO composites compared with that of pure BiOF/Bi{sub 2}O{sub 3} under the natural sunlight irradiation. The optimum conditions, the effects of the active species and stabilities in photocatalytic performances of the BiOF/Bi{sub 2}O{sub 3}/RGO composites have also been probed.

  16. Crystalline structure and XMCD studies of Co40Fe40B20 grown on Bi2Te3, BiTeI and Bi2Se3

    OpenAIRE

    Kaveev, A. K.; Sokolov, N. S.; Suturin, S. M.; Zhiltsov, N. S.; Golyashov, V. A.; Tereshchenko, O. E.; Prosvirin, I. P.; Kokh, K. A.; Sawada, M.

    2018-01-01

    Epitaxial films of Co40Fe40B20 (further - CoFeB) were grown on Bi2Te3(001) and Bi2Se3(001) substrates by laser molecular beam epitaxy (LMBE) technique at 200-400C. Bcc-type crystalline structure of CoFeB with (111) plane parallel to (001) plane of Bi2Te3 was observed, in contrast to polycrystalline CoFeB film formed on Bi2Se3(001) at RT using high-temperature seeding layer. Therefore, structurally ordered ferromagnetic thin films were obtained on the topological insulator surface for the firs...

  17. Phonons of single quintuple Bi 2 Te 3 and Bi 2 Se 3 films and bulk materials

    KAUST Repository

    Cheng, Wei; Ren, Shang-Fen

    2011-01-01

    Phonons of single quintuple films of Bi2Te3 and Bi2Se3 and corresponding bulk materials are calculated in detail by MedeA (a trademark of Materials Design) and Vienna ab initio simulation package (VASP). The calculated results with and without spin-orbit couplings are compared, and the important roles that the spin-orbit coupling plays in these materials are discussed. A symmetry breaking caused by the anharmonic potentials around Bi atoms in the single quintuple films is identified and discussed. The observed Raman intensity features in Bi 2Te3 and Bi2Se3 quintuple films are explained. © 2011 American Physical Society.

  18. Phonons of single quintuple Bi 2 Te 3 and Bi 2 Se 3 films and bulk materials

    KAUST Repository

    Cheng, Wei

    2011-03-10

    Phonons of single quintuple films of Bi2Te3 and Bi2Se3 and corresponding bulk materials are calculated in detail by MedeA (a trademark of Materials Design) and Vienna ab initio simulation package (VASP). The calculated results with and without spin-orbit couplings are compared, and the important roles that the spin-orbit coupling plays in these materials are discussed. A symmetry breaking caused by the anharmonic potentials around Bi atoms in the single quintuple films is identified and discussed. The observed Raman intensity features in Bi 2Te3 and Bi2Se3 quintuple films are explained. © 2011 American Physical Society.

  19. Magnetic and thermoelectric properties of three different atomic ratio of Bi/Mn in BiMn2O5: DFT approach

    International Nuclear Information System (INIS)

    Khan, Wilayat; Reshak, A.H.; Rafezi Ahmad, Khairel; Alahmed, Z.A.

    2014-01-01

    Electronic structure and magnetic properties of the three different samples of BiMn 2 O 5 , are calculated using the density functional theory (DFT). These samples have different Bi/Mn concentration. For simplicity, we suggest to call them as A, B and C. The calculated band structures show half metallicity for all samples, and possess 100% spin polarization at the Fermi level. The spin up/down density of states are calculated using Engel–Vosko generalized gradient approximation (EV-GGA). We have discussed the effect of Mn magnetic moment (μ B ) on the electronic and magnetic properties of the entire samples. The temperature dependent thermoelectric properties like electrical and thermal conductivity, Seebeck coefficient and power factor are also calculated, employing the Boltzmann transport theory under the BoltzTraP code. Our results indicated that these properties are strongly dependent on Bi/Mn concentration. - Highlights: • FPLAPW method used for calculating the electronic Structure. • The band structure shows that the calculated compounds are half metallic. • The magnetic properties have been calculated. • Thermoelectric properties were also calculated using Boltzmann theory. • Calculated power factor shows that sample B are good thermoelectric material

  20. Multiple Employer Welfare Arrangements

    Science.gov (United States)

    1992-01-01

    Sponsors in the Private Nonfarm Sector in the United States, 1978-79," Volume IV, Description and Analysis of Plans and Plan Sponsors, NTIS # PB81-180366...Labor finds to be collectively bargained plans, and those organized by rural electrical cooperatives and rural telephone cooperatives. Thus, except for...their existence and generally higher cost than uninsured plans no doubt contributed to the development of other types of multiple employer

  1. Authenticity in Employment Relations

    OpenAIRE

    Tackney, Charles T.

    2014-01-01

    This research takes up the concept of authenticity as a criterion variable for theology of the workplace analysis, a domain which explores employment parameters in light of religious teaching on the social question at national, organizational or firm-specific levels. Following a review of the concept in Western culture, philosophy, and management studies, Religious Society of Friends (Quaker) and Roman Catholic social teachings are investigated for positively correlative data to help develop ...

  2. Bi-static Optical Observations of GEO Objects

    Science.gov (United States)

    Seitzer, Patrick; Barker, Edwin S.; Cowardin, Heather; Lederer, Susan M.; Buckalew, Brent

    2014-01-01

    A bi-static study of objects at Geosynchronous Earth Orbit (GEO) was conducted using two ground-based wide-field optical telescopes. The University of Michigan's 0.6-m MODEST (Michigan Orbital Debris Survey Telescope) located at the Cerro Tololo Inter- American Observatory in Chile was employed in a series of coordinated observations with the U.S. Naval Observatory's (USNO) 1.3-m telescope at the USNO Flagstaff Station near Flagstaff, Arizona, USA. The goals of this project are twofold: (1) Obtain optical distances to known and unknown objects at GEO from the difference in the observed topocentric position of objects measured with respect to a reference star frame. The distance can be derived directly from these measurements, and is independent of any orbital solution. The wide geographical separation of these two telescopes means that the parallax difference is larger than ten degrees, and (2) Compare optical photometry in similar filters of GEO objects taken during the same time period from the two sites. The object's illuminated surfaces presented different angles of reflected sunlight to the two telescopes.During a four hour period on the night.of 22 February 2014 (UT), coordinated observations were obtained for eight different GEO positions. Each coordinated observation sequence was started on the hour or half-hour, and was selected to ensure the same cataloged GEO object was available in the field of view of both telescopes during the thirty minute observing sequence. GEO objects were chosen to be both controlled and uncontrolled at a range of orbital inclinations, and the objects were not tracked. Instead both telescopes were operated with all drives off in GEO survey mode to discover un-cataloged objects at GEO. The initial results from this proof-of-concept observing run will be presented, with the intent of laying the foundation for future large-scale bi-static observing campaigns of the GEO regime.

  3. Soldiers’ employment attitude and employability: An exploratory study

    Directory of Open Access Journals (Sweden)

    Peng Gao

    2015-04-01

    Full Text Available Purpose: Nowadays it is very difficult for Chinese retired soldiers to find proper jobs, and the primary reason is the significant gap between job requirements and soldiers owned job skills. Therefore, it is very important to improve the soldiers’ job skills and enhance their understanding of employment.Design/methodology/approach: This paper expands the study scope from the soldiers’ job skills to the employability, initiatively introduces the employment attitude which has obvious impact on the employment of soldiers, and analyses the influence that employment attitude can play on employability. At last, this paper develops statistical method to find the relationship between soldiers’ employment attitude and employability.Findings: The empirical analysis shows that soldiers’ employment attitude has the positive linkage with employability, which makes the employment attitude a measurable variable for the employability rather than an absolute standard.Research limitations/implications: According to the research purpose, more variables should be considered in the model, consequently, there are only three indicators to describe solders’ employment attitude and four indicators to describe solders’ employability.Originality/value: This paper takes research on soldiers’ employability in a new perspective. The soldiers’ employment attitude is served as the entry point, showing the influence that soldiers’ employment attitude has on employability.

  4. Energy investments and employment

    International Nuclear Information System (INIS)

    1993-08-01

    A study was conducted to assess the effect that different energy options would have on provincial and regional employment prospects in British Columbia. Current and future economic and employment patterns were examined to develop a more detailed understanding of the skills, age, gender, location, and other characteristics of British Columbia workers. Over 40 previous studies examining the energy/employment relationship were also reviewed. Based on this review and an analysis of the province's economic and labor conditions, the following conclusions are drawn. Investment in non-energy sectors offers better prospects for reducing unemployment than investment in the energy sector, whether for new supply or improving efficiency. Investments in the energy sector provide fewer jobs than investments in most other sectors of the economy. Among the available electricity supply options, large hydroelectric projects tend to produce the fewest jobs per investment dollar. Smaller thermal projects such as wood residue plants produce the most jobs. If and when more energy is needed in British Columbia, the most cost-effective combination of energy supply and efficiency options will also create the most jobs. Compared to traditional energy supply options, investments in energy efficiency would create about twice as many total jobs, create jobs that better match the skills of the province's unemployed and its population distribution, and create jobs that last longer on the average. Construction-related measures such as improved insulation tend to produce more jobs per investment dollar than the substitution of more energy-efficient equipment. 69 refs., 9 tabs

  5. Environment, employment and development

    International Nuclear Information System (INIS)

    Bhalla, A.S.

    1992-01-01

    It is generally recognised that the question of sustainable development is a global problem, emphasizing the increasingly interdependent nature of relationships among nations. Solutions to the problem are as much political as they are economic and technological. Notwithstanding the deepening and widening of the debate on sustainable development, its implications for employment - a major concern of the ILO under its World Employment Programme - have remained largely unexplored. This volume, therefore, has a very modest objective, namely to place the employment question on the policy agenda in the context of the current debate on environment and development. The design of environmental policies should allow for the differences that exist between countries with a high level of development and technological dynamism and those with a low level of development and low technological capability. One must also recognize the costs imposed by adjustment and the consequent distributional impact. In the long term, technology choice plays a crucial role in promoting sustainable development in both industrialized and developing countries. It is not only environment-friendly technologies that need to be developed and diffused; in the case of the least developed countries, technological transformation needs to be accelerated in order to minimise their dependence on natural resources for economic growth. Refs, figs and tabs

  6. Strongly compressed Bi (111) bilayer films on Bi{sub 2}Se{sub 3} studied by scanning tunneling microscopy

    Energy Technology Data Exchange (ETDEWEB)

    Zhang, K. F.; Yang, Fang; Song, Y. R. [Key Laboratory of Artificial Structures and Quantum Control (Ministry of Education), Department of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240 (China); Liu, Canhua; Qian, Dong; Gao, C. L.; Jia, Jin-Feng [Key Laboratory of Artificial Structures and Quantum Control (Ministry of Education), Department of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240 (China); Collaborative Innovation Center of Advanced Microstructures, Nanjing 210093 (China)

    2015-09-21

    Ultra-thin Bi films show exotic electronic structure and novel quantum effects, especially the widely studied Bi (111) film. Using reflection high-energy electron diffraction and scanning tunneling microscopy, we studied the structure and morphology evolution of Bi (111) thin films grown on Bi{sub 2}Se{sub 3}. A strongly compressed, but quickly released in-plane lattice of Bi (111) is found in the first three bilayers. The first bilayer of Bi shows a fractal growth mode with flat surface, while the second and third bilayer show a periodic buckling due to the strong compression of the in-plane lattice. The lattice slowly changes to its bulk value with further deposition of Bi.

  7. Study on Energy Absorption Capacity of Steel-Polyester Hybrid Fiber Reinforced Concrete Under Uni-axial Compression

    Science.gov (United States)

    Chella Gifta, C.; Prabavathy, S.

    2018-05-01

    This work presents the energy absorption capacity of hybrid fiber reinforced concrete made with hooked end steel fibers (0.5 and 0.75%) and straight polyester fibers (0.5, 0.8, 1.0 and 2.0%). Compressive toughness (energy absorption capacity) under uni-axial compression was evaluated on 100 × 200 mm size cylindrical specimens with varying steel and polyester fiber content. Efficiency of the hybrid fiber reinforcement is studied with respect to fiber type, size and volume fractions in this investigation. The vertical displacement under uni-axial compression was measured under the applied loads and the load-deformation curves were plotted. From these curves the toughness values were calculated and the results were compared with steel and polyester as individual fibers. The hybridization of 0.5% steel + 0.5% polyester performed well in post peak region due to the addition of polyester fibers with steel fibers and the energy absorption value was 23% greater than 0.5% steel FRC. Peak stress values were also higher in hybrid series than single fiber and based on the results it is concluded that hybrid fiber reinforcement improves the toughness characteristics of concrete without affecting workability.

  8. Perspectivas y dimensiones de una gobernanza global: el futuro de la Unión Europea como actor internacional

    Directory of Open Access Journals (Sweden)

    Alberto Castillo Castañeda

    2013-11-01

    Full Text Available El artículo pretende analizar el papel global de la Unión Europea como actor internacional sobre la base de sus componentes de poder, las dimensiones de la gobernanza global y sus perspectivas como proyecto regional para lograr tener una lectura de su participación en el sistema internacional en el futuro. Dentro de estas perspectivas futuras se resaltará el papel que juega el poder blando de la Unión Europea como potencia normativa y civil dentro de una gobernanza global con nuevos actores, intereses y valores divergentes. Este trabajo parte de la hipótesis de que el cambio relacional de poder en la sociedad internacional está ocasionando dinámicas geopolíticas y geoeconómicas contrapuestas a los planteamientos de un multilateralismo eficaz. Se intentará responder o, al menos, brindar algunas luces a interrogantes tales como: ¿Podrá la UE preservar su relevancia como actor internacional en este mundo en cambio? ¿Mantendrá la relevancia en sus valores e intereses como proyecto regional? ¿La estrategia europea de incidencia internacional debe basarse simplemente en el ámbito del poder blando y el multilateralismo eficaz?

  9. A UniChem and electron momentum spectroscopy investigations into the valence electronic structure of trans 1,3 butadiene

    Energy Technology Data Exchange (ETDEWEB)

    Michalewicz, M.T. [CSIRO, Supercomputing Support Group, Carlton, VIC (Australia). Division of Information Technology; Winkler, D.A. [Commonwealth Scientific and Industrial Research Organisation (CSIRO), Clayton, VIC (Australia). Div. of Chemical Physics; Brunger, M.J.; McCarthy, L.E. [Flinders Univ. of South Australia, Bedford Park, SA (Australia). School of Physical Sciences; Von Niessen, W. [Flinders Univ. of South Australia, Bedford Park, SA (Australia). School of Physical Sciences

    1996-09-01

    The experimental (e,2e) coincidence spectroscopy, known as electron momentum spectroscopy (EMS) was applied to the trans 1,3 butadiene (C{sub 4}H{sub 6}) molecule with detailed binding energy spectra and orbital momentum distributions (MDs) being measured. A small selection of this data is presented. The usage of UniChem computational chemistry codes for the Flinders-developed AMOLD program allows to calculate theoretical MDs for each orbital, to help elucidate the valence electronic structure of butadiene. The results of the many-body Green`s function calculation is also presented, to the ADC(3) level, for the binding energies and spectroscopic factors of the respective orbitals of C{sub 4}H{sub 6}. A critical comparison between the experimental and theoretical MDs allows to determine the optimum wavefunction from the basis sets studied. The determination of the wavefunction then allows to make further use of the UniChem package to derive butadiene`s chemically interesting molecular properties. A summary of these results and comparison of them with the previous results of other workers is presented. 23 refs., 2 tabs., 2 figs.

  10. La Unión General de Trabajadores en Cantabria (1888-1917 : nacimiento y desarrollo de una estructura societaria

    Directory of Open Access Journals (Sweden)

    Antonio Santoveña Setién

    2002-01-01

    Full Text Available Este artículo estudia la trayectoria histórica de la Unión General de Trabajadores en Cantabria entre agosto de 1888 (en que fue creada y finales de 1917 (cuando, debido a la huelga general revolucionaría de ese año, quedó desmantelada temporalmente. Para ello, el texto se divide en tres partes: mientras la inicial coincide con el establecimiento de las primeras sociedades de resistencia en Santander, la segunda se centra en la expansión obrerista producida desde 1898 tanto en esta ciudad como en otras localidades de la región citada; por último, el tercer apartado analiza la evolución de las colectividades proletarias a partir de 1905.This paper is the result of research into the historical evolution of the General Workers Union in Cantabria between August 1888 (in which it was founded and the end of 1917 (when, due to the revolutionary general strike of that year, the organization was temporarily prohibited. For this purpose, the paper is divided into three parís. The first deals with the creation of the earliest trade unión societies in Santander. The second is centred on the growth of the working-class movement from 1898 as in this city as in other localities in the same región. Lastly, the third examines the evolution of the proletarian societies since 1905.

  11. Ampliación de la Unión Europea: estado de la cuestión

    Directory of Open Access Journals (Sweden)

    Landaburu, Eneko

    2002-06-01

    Full Text Available Not available

    La ampliación es el gran desafío de la Unión Europea para los próximos años, el asunto más importante que debe tratarse durante los mandatos de la Comisión Prodi y del actual Parlamento Europeo. ¿Por qué? Porque esta ampliación no se asemeja a ninguna otra ampliación anterior y ninguna volverá a tener el peso real y simbólico de ésta. Se trata de reunir Europa, de reconciliar la geografía con la historia y con la evolución política que la ha transformado en el último decenio, de extender la zona de paz y estabilidad política, de democracia, de respeto de los derechos humanos y de desarrollo económico que representa la Unión Europea.

  12. A UniChem and electron momentum spectroscopy investigations into the valence electronic structure of trans 1,3 butadiene

    International Nuclear Information System (INIS)

    Michalewicz, M.T.; Winkler, D.A.; Brunger, M.J.; McCarthy, L.E.; Von Niessen, W.

    1996-09-01

    The experimental (e,2e) coincidence spectroscopy, known as electron momentum spectroscopy (EMS) was applied to the trans 1,3 butadiene (C 4 H 6 ) molecule with detailed binding energy spectra and orbital momentum distributions (MDs) being measured. A small selection of this data is presented. The usage of UniChem computational chemistry codes for the Flinders-developed AMOLD program allows to calculate theoretical MDs for each orbital, to help elucidate the valence electronic structure of butadiene. The results of the many-body Green's function calculation is also presented, to the ADC(3) level, for the binding energies and spectroscopic factors of the respective orbitals of C 4 H 6 . A critical comparison between the experimental and theoretical MDs allows to determine the optimum wavefunction from the basis sets studied. The determination of the wavefunction then allows to make further use of the UniChem package to derive butadiene's chemically interesting molecular properties. A summary of these results and comparison of them with the previous results of other workers is presented. 23 refs., 2 tabs., 2 figs

  13. Hierarchical nanostructured 3D flowerlike BiOX particles with excellent visible-light photocatalytic activity

    Energy Technology Data Exchange (ETDEWEB)

    Song, Jinling, E-mail: sjl2010004@imust.cn; Wang, Baoying; Guo, Xianjie; Wang, Ruifen; Dong, Zhongping [Inner Mongolia University of Science and Technology, School of Material and Metallurgy (China)

    2016-08-15

    BiOX (X = Cl, Br, and I) semiconductors were firstly prepared by a facile mixed solvent solvothermal route. Several characterization tools were employed to study the phase structures, morphologies, and optical properties of the samples. The in situ chemically mixed prepared BiOX particles with diameters 3.0–5.0 μm, fabricated by nanoplates in the thickness range of 5–18 nm, exhibited the highest visible-light photocatalytic activity among the as-prepared samples and Degussa P{sub 25} for the degradation of Rhodamine B (RhB). This result can be due to the narrow bandgap, broad sunlight range, high electronic negativity, and efficient separation of photoinduced electron–hole pairs. Finally, a possible photocatalytic mechanism has been proposed.

  14. Full Employment in Industrialized Countries.

    Science.gov (United States)

    Britton, Andrew

    1997-01-01

    Argues that full employment must be acceptable on both social and economic grounds. Examines profound changes in industrialized economies since the 1970s and the diversity of employment contracts. Suggests that difficult policy decisions surround full employment. (SK)

  15. Magnetothermoelectric properties of Bi2Se3

    Science.gov (United States)

    Fauqué, Benoît; Butch, Nicholas P.; Syers, Paul; Paglione, Johnpierre; Wiedmann, Steffen; Collaudin, Aurélie; Grena, Benjamin; Zeitler, Uli; Behnia, Kamran

    2013-01-01

    We present a study of entropy transport in Bi2Se3 at low temperatures and high magnetic fields. In the zero-temperature limit, the magnitude of the Seebeck coefficient quantitatively tracks the Fermi temperature of the three-dimensional Fermi surface at the Γ point as the carrier concentration changes by two orders of magnitude (1017 to 1019 cm-3). In high magnetic fields, the Nernst response displays giant quantum oscillations indicating that this feature is not exclusive to compensated semimetals. A comprehensive analysis of the Landau level spectrum firmly establishes a large g factor in this material and a substantial decrease of the Fermi energy with increasing magnetic field across the quantum limit. Thus, the presence of bulk carriers significantly affects the spectrum of the intensively debated surface states in Bi2Se3 and related materials.

  16. A bi-metric theory of gravitation

    International Nuclear Information System (INIS)

    Rosen, N.

    1975-01-01

    The bi-metric theory of gravitation proposed previously is simplified in that the auxiliary conditions are discarded, the two metric tensors being tied together only by means of the boundary conditions. Some of the properties of the field of a particle are investigated; there is no black hole, and it appears that no gravitational collapse can take place. Although the proposed theory and general relativity are at present observationally indistinguishable, some differences are pointed out which may some day be susceptible of observation. An alternative bi-metric theory is considered which gives for the precession of the perihelion 5/6 of the value given by general relativity; it seems less satisfactory than the present theory from the aesthetic point of view. (author)

  17. Longitudinal magnetoresistance and magnototermopower in Bi nanowires

    International Nuclear Information System (INIS)

    Para, G.

    2011-01-01

    Full text: The galvanomagnetic effect of single crystals Bi nanowires have been studied in longitudinal magnetic fields up to 14 T. The influence of diameters, temperature and deformation extension on the longitudinal magnetoresistance and magnetotermopower (H||I, H||ΔT) of bismuth nanowires is studied. Elastic deformation measurements were conducted at maximum relative elongation 2 %. For the first time have been investigated the magnetotermopower of Bi nanowires with d=45 nm. Essentially non monotonic dependence H max on temperature in longitudinal thermopower in wires with d=45-60 nm is found out. Such difference in behavior of maximum on R(H) and on α(H) in wires with d<100nm says that the behavior of resistance is caused by other mechanism, then thermopower. (author)

  18. Strain dependent microstructural modifications of BiCrO{sub 3} epitaxial thin films

    Energy Technology Data Exchange (ETDEWEB)

    Kannan, Vijayanandhini, E-mail: kvnandhini@gmail.com [Max Planck Institute of Microstructure Physics, Weinberg 2, D-06120 Halle (Saale) (Germany); CNRS, University of Bordeaux, ICMCB, UPR 9048, F-33600 Pessac (France); Arredondo, Miryam; Johann, Florian; Hesse, Dietrich [Max Planck Institute of Microstructure Physics, Weinberg 2, D-06120 Halle (Saale) (Germany); Labrugere, Christine [CNRS, University of Bordeaux, ICMCB, UPR 9048, F-33600 Pessac (France); CeCaMA, University of Bordeaux, ICMCB, F-33600 Pessac (France); Maglione, Mario [CNRS, University of Bordeaux, ICMCB, UPR 9048, F-33600 Pessac (France); Vrejoiu, Ionela [Max Planck Institute of Microstructure Physics, Weinberg 2, D-06120 Halle (Saale) (Germany)

    2013-10-31

    Strain-dependent microstructural modifications were observed in epitaxial BiCrO{sub 3} (BCO) thin films fabricated on single crystalline substrates, utilizing pulsed laser deposition. The following conditions were employed to modify the epitaxial-strain: (i) in-plane tensile strain, BCO{sub STO} [BCO grown on buffered SrTiO{sub 3} (001)] and in-plane compressive strain, BCO{sub NGO} [BCO grown on buffered NdGaO{sub 3} (110)] and (ii) varying BCO film thickness. A combination of techniques like X-ray diffraction, X-ray photoelectron spectroscopy (XPS) and high resolution transmission electron microscopy (TEM) was used to analyse the epitaxial growth quality and the microstructure of BCO. Our studies revealed that in the case of BCO{sub STO}, a coherent interface with homogeneous orthorhombic phase is obtained only for BCO film with thicknesses, d < 50 nm. All the BCO{sub STO} films with d ≥ 50 nm were found to be strain-relaxed with an orthorhombic phase showing 1/2 <100> and 1/4 <101> satellite reflections, the latter oriented at 45° from orthorhombic diffraction spots. High angle annular dark field scanning TEM of these films strongly suggested that the satellite reflections, 1/2 <100> and 1/4 <101>, originate from the atomic stacking sequence changes (or “modulated structure”) as reported for polytypes, without altering the chemical composition. The unaltered stoichiometry was confirmed by estimating both valency of Bi and Cr cations by surface and in-depth XPS analysis as well as the stoichiometric ratio (1 Bi:1 Cr) using scanning TEM–energy dispersive X-ray analysis. In contrast, compressively strained BCO{sub NGO} films exhibited monoclinic symmetry without any structural modulations or interfacial defects, up to d ∼ 200 nm. Our results indicate that both the substrate-induced in-plane epitaxial strain and the BCO film thickness are the crucial parameters to stabilise a homogeneous BCO phase in an epitaxially grown film. - Highlights: • Phase pure

  19. Measurement of radon concentration in air employing Lucas chamber

    International Nuclear Information System (INIS)

    Machaj, B.

    1997-01-01

    The results of investigations aimed to determine the main features of radon concentration gauge in air, employing 0.17 L Lucas chamber, and air sample forced by an air pump are presented. For two hour sampling and measuring cycle time the dynamic error in the worst case (first read out) equals 5 % relative to the step jump of radon concentration. This is due to the increase of activity of the decay products in the chamber. It was observed that the short lived radon decay products (Po-218, Pb-214, Bi-214) are depositing on the walls of the chamber and they are not removed by flushing the chamber with air. (author)

  20. Neutrino bi-large mixings and family

    International Nuclear Information System (INIS)

    Bando, Masako; Obara, Midori

    2004-01-01

    After a brief review of quark-lepton relations in grand unified theories (GUT), we show that the Pati-Salam relation with only one type of Higgs field configuration with ''four zero symmetric texture'' can reproduce two large neutrino mixings as well as observed mass differences. This is quite in contrast to the case of SU(5) where bi-large mixings essentially come from the charged lepton sector with non-symmetric charged lepton mass matrix. (author)

  1. Social BI. Trends and development needs

    Directory of Open Access Journals (Sweden)

    Corneliu Mihai PREDA

    2014-12-01

    Full Text Available This paper tries to show that the need to implement BI solutions that integrate social networks data is increasingly more acute. Companies need to understand that efficient decision making has to take into account the importance that social medial has nowadays. In addition, the software developing companies have to keep up to date with new trends generated within these communication channels and adapt their solutions to this dynamic environment.

  2. Efficient parallel and out of core algorithms for constructing large bi-directed de Bruijn graphs

    Directory of Open Access Journals (Sweden)

    Vaughn Matthew

    2010-11-01

    Full Text Available Abstract Background Assembling genomic sequences from a set of overlapping reads is one of the most fundamental problems in computational biology. Algorithms addressing the assembly problem fall into two broad categories - based on the data structures which they employ. The first class uses an overlap/string graph and the second type uses a de Bruijn graph. However with the recent advances in short read sequencing technology, de Bruijn graph based algorithms seem to play a vital role in practice. Efficient algorithms for building these massive de Bruijn graphs are very essential in large sequencing projects based on short reads. In an earlier work, an O(n/p time parallel algorithm has been given for this problem. Here n is the size of the input and p is the number of processors. This algorithm enumerates all possible bi-directed edges which can overlap with a node and ends up generating Θ(nΣ messages (Σ being the size of the alphabet. Results In this paper we present a Θ(n/p time parallel algorithm with a communication complexity that is equal to that of parallel sorting and is not sensitive to Σ. The generality of our algorithm makes it very easy to extend it even to the out-of-core model and in this case it has an optimal I/O complexity of Θ(nlog(n/BBlog(M/B (M being the main memory size and B being the size of the disk block. We demonstrate the scalability of our parallel algorithm on a SGI/Altix computer. A comparison of our algorithm with the previous approaches reveals that our algorithm is faster - both asymptotically and practically. We demonstrate the scalability of our sequential out-of-core algorithm by comparing it with the algorithm used by VELVET to build the bi-directed de Bruijn graph. Our experiments reveal that our algorithm can build the graph with a constant amount of memory, which clearly outperforms VELVET. We also provide efficient algorithms for the bi-directed chain compaction problem. Conclusions The bi

  3. Efficient parallel and out of core algorithms for constructing large bi-directed de Bruijn graphs.

    Science.gov (United States)

    Kundeti, Vamsi K; Rajasekaran, Sanguthevar; Dinh, Hieu; Vaughn, Matthew; Thapar, Vishal

    2010-11-15

    Assembling genomic sequences from a set of overlapping reads is one of the most fundamental problems in computational biology. Algorithms addressing the assembly problem fall into two broad categories - based on the data structures which they employ. The first class uses an overlap/string graph and the second type uses a de Bruijn graph. However with the recent advances in short read sequencing technology, de Bruijn graph based algorithms seem to play a vital role in practice. Efficient algorithms for building these massive de Bruijn graphs are very essential in large sequencing projects based on short reads. In an earlier work, an O(n/p) time parallel algorithm has been given for this problem. Here n is the size of the input and p is the number of processors. This algorithm enumerates all possible bi-directed edges which can overlap with a node and ends up generating Θ(nΣ) messages (Σ being the size of the alphabet). In this paper we present a Θ(n/p) time parallel algorithm with a communication complexity that is equal to that of parallel sorting and is not sensitive to Σ. The generality of our algorithm makes it very easy to extend it even to the out-of-core model and in this case it has an optimal I/O complexity of Θ(nlog(n/B)Blog(M/B)) (M being the main memory size and B being the size of the disk block). We demonstrate the scalability of our parallel algorithm on a SGI/Altix computer. A comparison of our algorithm with the previous approaches reveals that our algorithm is faster--both asymptotically and practically. We demonstrate the scalability of our sequential out-of-core algorithm by comparing it with the algorithm used by VELVET to build the bi-directed de Bruijn graph. Our experiments reveal that our algorithm can build the graph with a constant amount of memory, which clearly outperforms VELVET. We also provide efficient algorithms for the bi-directed chain compaction problem. The bi-directed de Bruijn graph is a fundamental data structure for

  4. La débil Europa: consideraciones críticas sobre la política exterior de la Unión

    Directory of Open Access Journals (Sweden)

    Víctor C. Pascual Planchuelo

    2009-07-01

    Full Text Available Este trabajo tiene como objetivo analizar la Política Exterior de la Unión Europea. Para ello se revisa la orientación general de todos los países miembros, sus agendas diplomáticas y posturas geoestratégicas. En un contexto global en el que la Unión Europea desempeña un rol de simple observador, sin posibilidad de ejercer un poder decisorio sobre los aspectos fundamentales de la política internacional, la única opción válida es la de reforzar la Política Exterior. La Unión Europea tiene la obligación de hablar ante el mundo con una sola voz, y no delegar los temas de defensa y seguridad al aliado de costumbre, los Estados Unidos.

  5. The effect of oxidant on resputtering of Bi from Bi-Sr-Ca-Cu-O films

    Science.gov (United States)

    Grace, J. M.; McDonald, D. B.; Reiten, M. T.; Olson, J.; Kampwirth, R. T.; Gray, K. E.

    1991-09-01

    The type and partial pressure of oxidant mixed with argon can affect the selective resputtering of Bi in composite-target, magnetron-sputtered Bi-Sr-Ca-Cu-O films. Comparative studies using oxygen and ozone show that ozone is a more potent oxidant, as well as a more potent source of resputterers, than is oxygen. Severe resputtering from ozone is significantly reduced by a -40 V potential on the sample block. We suggest that oxygen causes resputtering by forming O2(+)p , which interacts with the target to produce energetic O(-). In contrast, ozone may form lower-energy O(-) by electron impact in the dark space. Negative oxygen ions from the target itself may be responsible for a background resputtering effect. Our results and those found for Y-Ba-Cu-O by others are comparable. Bi in Bi-Sr-Ca-Cu-O behaves as Ba in Y-Ba-Cu-O, with regard to selective resputtering; furthermore, the response of Sr, Ca, and Cu to oxygen in sputtered Bi-Sr-Ca-Cu-O is similar to what is observed for Cu in Y-Ba-Cu-O.

  6. Effect of oxidant on resputtering of Bi from Bi--Sr--Ca--Cu--O films

    International Nuclear Information System (INIS)

    Grace, J.M.; McDonald, D.B.; Reiten, M.T.; Olson, J.; Kampwirth, R.T.; Gray, K.E.

    1992-01-01

    The type and partial pressure of oxidant mixed with argon can affect the selective sputtering of Bi in composite-target, magnetron-sputtered Bi--Sr--Ca--Cu--O films. Comparative studies using oxygen and ozone show that ozone is a more potent oxidant, as well as a more potent source of resputterers than is oxygen. Severe resputtering from ozone is significantly reduced by a -40 V potential on the sample block. We suggest that oxygen causes resputtering by forming O + 2 , which interacts with the target to produce energetic O - . In contrast, ozone may form lower-energy O - by electron impact in the dark space. Negative oxygen ions from the target itself may be responsible for a background resputtering effect. Our results and those found for Y--Ba--Cu--O by others are comparable. Bi in Bi--Sr--Ca--Cu--O behaves as Ba in Y--Ba--Cu--O, with regard to selective resputtering; furthermore, the response of Sr, Ca, and Cu to oxygen in sputtered Bi--Sr--Ca--Cu--O is similar to what is observed for Cu in Y--Ba--Cu--O

  7. 2007 Veterans Employability Research Survey

    Data.gov (United States)

    Department of Veterans Affairs — The 2007 Veterans Employability Research Survey (VERS) was conducted to determine the factors that impact veterans' employability resulting from participation in the...

  8. Search for negative U in the Ba1-xKxBi1-yPbyO3 system using constrained density-functional theory

    International Nuclear Information System (INIS)

    Vielsack, G.; Weber, W.

    1996-01-01

    Calculations using constrained density-functional theory have been carried out for the Ba 1-x K x Bi 1-y Pb y O 3 system, using a full-potential linearized-augmented-plane-wave method and employing fcc supercell geometries with two formula units. The results have been mapped onto Hubbard-type models in order to extract values of interaction parameters U at the Bi sites. Two different mapping procedures have been utilized. The first one is the standard method, based on the comparison of total-energy curvatures. The second method, proposed in the present work, relies on the analysis of single particle energies and yields much smaller numerical errors. For BaBiO 3 interaction parameters are obtained for the following models: (i) s and p orbitals at Bi and p orbitals at O sites. Here, U s =3.1±0.4 eV, U sp =1.4±0.2 eV, U p =2.2±0.4 eV are found, (ii) s(Bi) and p(O) orbitals, yielding U s =1.9±0.7 eV, and (iii) an effective one-band model, leading to U s =0.6±0.4 eV. Further studies have been performed for breathing distorted BaBiO 3 and for various Ba 1-x K x Bi 1-y Pb y O 3 alloys using virtual crystal approximations. The resulting U values are somewhat larger than for pure BaBiO 3 . Thus, in all cases, the values of Bi U parameters are found to be positive. There is no indication of a negative U of electronic origin. copyright 1996 The American Physical Society

  9. XPS and DFT study of pulsed Bi-implantation of bulk and thin-films of ZnO—The role of oxygen imperfections

    Energy Technology Data Exchange (ETDEWEB)

    Zatsepin, D.A. [M.N. Miheev Institute of Metal Physics of Ural Branch of Russian Academy of Sciences, 620990 Yekaterinburg (Russian Federation); Institute of Physics and Technology, Ural Federal University, 620002 Yekaterinburg (Russian Federation); Boukhvalov, D.W., E-mail: danil@hanyang.ac.kr [Department of Chemistry, Hanyang University, 17 Haengdang-dong, Seongdong-gu, Seoul 04763 (Korea, Republic of); Theoretical Physics and Applied Mathematics Department, Ural Federal University, Mira Street 19, 620002 Yekaterinburg (Russian Federation); Gavrilov, N.V. [Institute of Electrophysics, Russian Academy of Sciences, Ural Branch, 620990 Yekaterinburg (Russian Federation); Kurmaev, E.Z. [M.N. Miheev Institute of Metal Physics of Ural Branch of Russian Academy of Sciences, 620990 Yekaterinburg (Russian Federation); Institute of Physics and Technology, Ural Federal University, 620002 Yekaterinburg (Russian Federation); Zhidkov, I.S. [Institute of Physics and Technology, Ural Federal University, 620002 Yekaterinburg (Russian Federation)

    2016-11-30

    Highlights: • Both theory and experiment evidence similarity of patterns of Bi-implantation in surface and bulk ZnO. • In the bulk morphology of ZnO both experiment and theory demonstrate preferability of substitutional defects. • Experiment and theory also evidence the formation of bismuth nano-clustes from substitutional and interstitial defects without formation of secondary metallic phase. • Oxygen vacancies is crucial to formation of these nano-clusters. - Abstract: An atomic and electronic structure of the bulk and thin-film morphologies of ZnO were modified using pulsed Bi-ion implantation (1 × 10{sup 17} cm{sup −2} fluence, 70 min exposure under Bi-ion beam, E{sub Bi}{sup +} = 30 keV, pulsed ion-current density of not more than 0.8 mA/cm{sup 2} with a repetition rate of 12.5 Hz). The final samples were qualified by X-ray photoelectron core-level and valence band mapping spectroscopy applying ASTM materials science standard. The spectroscopy data obtained was discussed on the basis of DFT-models for Bi-embedding into ZnO host-matrices. It was established that in the case of direct Bi-impurities insertion into the employed ZnO-host for both studied morphologies neither the only “pure” Bi{sub 2}O{sub 3}-like phase nor the only “pure” Bi-metal will be preferable to appear as a secondary phase. An unfavorability of the large cluster agglomeration of Bi-impurities in ZnO-hosts has been shown and an oxygen 2s electronic states pleomorphizm was surely established.

  10. Microwave-assisted solvothermal synthesis of flower-like Ag/AgBr/BiOBr microspheres and their high efficient photocatalytic degradation for p-nitrophenol

    International Nuclear Information System (INIS)

    Li, Tingting; Luo, Shenglian; Yang, Lixia

    2013-01-01

    Flower-like Ag/AgBr/BiOBr microspheres were successfully fabricated by the approach of microwave-assisted solvothermal and in situ photo-assisted reduction. A reactive ionic liquid 1-hexadecyl-3-methylimidazolium bromide ([C 16 mim]Br) was employed as Br source in the presence of surfactant polyvinylpyrrolidone (PVP). The photocatalytic activity of Ag/AgBr/BiOBr towards the decomposition of p-nitrophenol under visible light irradiation was evaluated. The results indicated that Ag/AgBr/BiOBr showed enhanced photocatalytic activity towards p-nitrophenol, comparing with P25, BiOBr and Ag/AgBr. More than 96% of p-nitrophenol was decomposed in 3.5 h under visible-light irradation. The excellent photocatalytic activity of flower-like Ag/AgBr/BiOBr microspheres can be attributed to the large specific surface area, strong visible-light absorption, suitable energy band structure and surface plasmon resonance effect of Ag nanoparticles. The possible photocatalytic mechanism was proposed based on the active species test and band gap structure analysis. - Graphical abstract: The photocatalytic reaction mechanisms of the as-prepared Ag/AgBr/BiOBr. Display Omitted - Highlights: • Successful synthesis of flower-like Ag/AgBr/BiOBr microspheres. • The Ag/AgBr/BiOBr showed much higher photocatalytic activity towards p-nitrophenol as compared to BiOBr and Ag/AgBr. • The reasons for the excellent photocatalytic activity are the large specific surface area, strong visible-light absorption and surface plasmon resonance effect of Ag nanoparticles. • The O 2 · − , Br 0 and photogenerated h + play key roles in the photocatalytic degradation process

  11. Leaving Employment to Entrepreneurship

    DEFF Research Database (Denmark)

    Rocha, Vera; Carneiro, Anabela; Varum, Celeste

    : the relative inattention paid to other human resources beyond the founder, and the hetero-geneous context where employee startups may be established. We use a rich matched employer-employee dataset for Portugal, and estimate a multi-stage model addressing the issues of self-selection in entrepreneurship...... outcomes of arrival fi rms, and also for developing theories on labor markets for entrepreneurship. It also constitutes an important step towards unpacking the mechanisms through which mobile human capital affects the performance of receiving firms....

  12. Challenging Scandinavian employment relations

    DEFF Research Database (Denmark)

    Ibsen, Christian Lyhne; Larsen, Trine Pernille; Madsen, Jørgen Steen

    2011-01-01

    and employment relations in the Danish, Norwegian and Swedish public sector. In this paper, we argue that although differences exist across the Scandinavian countries, it is evident that they have managed to adopt and implement NPM-inspired reforms without dismantling their universal welfare services and strong......Building on the convergence/divergence approach, this paper examines whether recent new public management (NPM) inspired reforms entailing inter alia cutbacks in the public sector, marketisation and management by performance measures have had significant implications for service provision...... traditions of collective bargaining in the public sector. However, this restructuring is taking its toll on the work environment....

  13. Graduate Employability: A Conceptual Framework for Understanding Employers' Perceptions

    Science.gov (United States)

    Cai, Yuzhuo

    2013-01-01

    This study provides a conceptual framework for understanding what employers think about the value of graduates with similar educational credentials in the workplace (their employability), using insights from the new institutionalism. In this framework, the development of employers' beliefs about graduates' employability is broken into a number of…

  14. La protección social como condicionante en las relaciones comerciales entre la Unión Europea y América Latina

    OpenAIRE

    Alvares García Junior, Armando

    2016-01-01

    La investigación aborda el tema de la protección de los derechos humanos y laborales en las relaciones comerciales entre Unión Europea y América Latina. Para su desarrollo ha sido necesario interconectar diferentes campos del conocimiento: derecho, relaciones internacionales, economía, comercio internacional y política exterior de la Unión Europea. Su objetivo más amplio era lograr, aunque parcialmente, seis aportaciones principales: 1) el encauzamiento, en la misma investigación, de campos t...

  15. Pol??tica exterior y comercio internacional en la Uni??n Europea en un mundo globalizado = European foreign policy and international trade under a globalized world

    OpenAIRE

    Fern??ndez D??az, Paula

    2017-01-01

    El consiguiente trabajo proporciona una visi??n general del Comercio Internacional en la Uni??n Europea y el lugar que esta ocupa en el contexto internacional. Para realizar un an??lisis completo de la pol??tica comercial de la UE, se debe tener en cuenta la globalizaci??n y la importancia que tiene la Uni??n Europea como participante en el intercambio de bienes a nivel global. Por ello, este estudio se inicia situando a la UE en el Mercado Internacional, ya que est?? es la eco...

  16. Authenticity in Employment Relations

    DEFF Research Database (Denmark)

    Tackney, Charles Thomas

    This research takes up the concept of authenticity as a criterion variable for theology of the workplace analysis, a domain which explores employment parameters in light of religious teaching on the social question at national, organizational or firm-specific levels. Following a review of the con......This research takes up the concept of authenticity as a criterion variable for theology of the workplace analysis, a domain which explores employment parameters in light of religious teaching on the social question at national, organizational or firm-specific levels. Following a review...... of the concept in Western culture, philosophy, and management studies, Religious Society of Friends (Quaker) and Roman Catholic social teachings are investigated for positively correlative data to help develop the criterion variable. From the literature review of concept and historical data in both traditions...... analysis should complement and support corporate social responsibility, management spirituality, authentic leadership / authentic follower, and other secular research by offering a research methods bridge between empirically grounded theology and secular studies, with the common goal of improving workplace...

  17. Life Sciences and employability

    Directory of Open Access Journals (Sweden)

    Wynand J. Boshoff

    2012-03-01

    Full Text Available This article addresses unemployment in rural areas. South Africa is also characterised by skills shortage and high unemployment figures, especially in rural areas as compared to urban areas. The institutional reality of education is that every rural village hosts a high school which is primarily engaged in preparing learners for further studies, whilst the Further Training Colleges (previously known as technical colleges are mainly located in the larger centres. It is with this scenario as a backdrop that the possible role of high schools to alleviate the problem is being argued. It is clear that rural employers do not expect from school leavers to be in possession of applicable knowledge, but rather to be in possession of the ability as well as certain personal characteristics that would make them employable. Unfortunately, however, this is not always found in young persons who have completed their schooling successfully. Life Sciences educators can render a valuable service should certain nontraditional approaches be incorporated into the teaching practice. This will enable them to contribute to solving one of South Africa’s serious problems.

  18. Optical spectroscopy and Fermi surface studies of BiTeCl and BiTeBr

    Science.gov (United States)

    Martin, Catalin; Suslov, A. V.; Buvaev, S.; Hebard, A. F.; Bugnon, Philippe; Berger, Helmuth; Magrez, Arnaud; Tanner, D. B.

    2014-03-01

    The observation of a large bulk Rashba effect in the non-centrosymmetric semiconductors BiTeX(X=Cl, Br, I) has stimulated the interest in these sys- tems, as promising candidates for studying spin related phenomena and for the realization of spin devices. Here we present a comparative study of the electronic properties of BiTeCl and BiTeBr, determined from temperature dependent infrared spectroscopy and Shubnikov-de Haas oscillations. In par- ticular, we compare the angle dependence of quantum oscillations between the two compounds and discuss possible differences between the topology of their Fermi surfaces. Supported by NSF Cooperative Agreement DMR-1157490 to the National High Magnetic Field Laboratory.

  19. Investigation of the electronic structure of the BiSBr and BiSeBr clusters by density functional method

    International Nuclear Information System (INIS)

    Audzijonis, A.; Gaigalas, G.; Zigas, L.; Pauliukas, A.; Zaltauskas, R.; Kvedaravicius, A.; Cerskus, A.

    2008-01-01

    The energy levels of valence bands (VB) of the BiSBr and BiSeBr crystals have been calculated for investigation of the photoelectron emission spectra of BiSBr, BiSeBr and BiSI crystals. The molecular model of this crystal has been used for the calculation of VB by the Density Functional Theory (DFT) method. The molecular cluster, consisting of 20 molecules of BiSBr, BiSeBr, has been used for calculations of averaged total density of states, including atom vibrations. The spectra of the averaged total density of states from VB of BiSBr and BiSeBr clusters have been compared with the experimental photoelectron emission spectra from VB of BiSI crystals. The results clarify that the atomic vibrations in A 5 B 6 C 7 type crystals with chain structure create a smoother appearance of the averaged total density of state spectrum and the experimental X-ray photoemission spectra (XPS)

  20. Orbital-dependent Rashba coupling in bulk BiTeCl and BiTeI

    KAUST Repository

    Zhu, Zhiyong; Cheng, Yingchun; Schwingenschlö gl, Udo

    2013-01-01

    By all-electron ab initio calculations, the layered polar semiconductor BiTeCl is shown to host giant bulk Rashba spin splitting, similar to the recently reported compound BiTeI. In both materials, the standard Rashba–Bychkov model is no longer applicable, because of huge band extrema shifts even in the absence of spin–orbit coupling and a strong momentum dependence of the Rashba coupling constant (αR). By assuming αR to be orbital dependent, a phenomenological extension of the Rashba–Bychkov model is proposed which explains the splitting behavior of states with small in-plane momentum.

  1. Orbital-dependent Rashba coupling in bulk BiTeCl and BiTeI

    KAUST Repository

    Zhu, Zhiyong

    2013-02-06

    By all-electron ab initio calculations, the layered polar semiconductor BiTeCl is shown to host giant bulk Rashba spin splitting, similar to the recently reported compound BiTeI. In both materials, the standard Rashba–Bychkov model is no longer applicable, because of huge band extrema shifts even in the absence of spin–orbit coupling and a strong momentum dependence of the Rashba coupling constant (αR). By assuming αR to be orbital dependent, a phenomenological extension of the Rashba–Bychkov model is proposed which explains the splitting behavior of states with small in-plane momentum.

  2. Employability Skills Assessment Tool Development

    Science.gov (United States)

    Rasul, Mohamad Sattar; Rauf, Rose Amnah Abd; Mansor, Azlin Norhaini; Puvanasvaran, A. P.

    2012-01-01

    Research nationally and internationally found that technical graduates are lacking in employability skills. As employability skills are crucial in outcome-based education, the main goal of this research is to develop an Employability Skill Assessment Tool to help students and lecturers produce competent graduates in employability skills needed by…

  3. Welfare Effects of Employment Protection

    NARCIS (Netherlands)

    Belot, M.V.K.; Boone, J.; van Ours, J.C.

    2002-01-01

    Employment protection is often related to costs incurred by the firms when they hire a worker.The stability of the employment relationship, enhanced by employment protection, is also favorable to the productivity of the job.We analyze employment protection focusing on this trade-off between

  4. The luminescence of CaWO4: Bi single crystals

    International Nuclear Information System (INIS)

    Zorenko, Yu.; Pashkovsky, M.; Voloshinovskii, A.; Kuklinski, B.; Grinberg, M.

    2006-01-01

    Influence of doping with Bi 3+ ions and Bi 3+ -Na + or Bi 3+ -Li + ions pairs on luminescence, emission kinetics and light yield of CaWO 4 crystals has been investigated. It has been shown that under excitation in the A-band at 272 and 287nm, related to the Bi 3+ ions absorption, the luminescence peaked at 468nm decaying with time τ=0.41μs is observed. For bismuth concentration 50-500ppm and the equimolar concentrations of the Bi 3+ ions accompanied by Na + or Li + ions compensators the significant suppression of the phosphorescence peaked at 520nm, related to the defect WO 3 -V O complex, and an improvement of scintillation characteristics of the CaWO 4 are noticed. Energy transfer from the defect WO 3 -V O and regular WO 4 2- oxy-anions to Bi 3+ ions have been observed at room temperatures and discussed

  5. Epicardial, Biatrial Ablation With Integrated Uni-bipolar Radiofrequency Technology in Stand-alone Persistent Atrial Fibrillation.

    Science.gov (United States)

    Rosati, Fabrizio; Muneretto, Claudio; Merati, Elisa; Polvani, Gianluca; Moltrasio, Massimo; Tondo, Claudio; Curnis, Antonio; Cerini, Manuel; Metras, Alexandre; Bisleri, Gianluigi

    Although minimally invasive approaches for surgical treatment of stand-alone atrial fibrillation have gained popularity for the past decade, ablation technology and extensive lesion sets play a major role in the achievement of a successful procedure, especially in presence of persistent and long-standing persistent atrial fibrillation. We evaluated clinical outcomes after totally endoscopic biatrial epicardial ablation of persistent atrial fibrillation with a novel integrated uni-bipolar radiofrequency device. Forty-nine (49) consecutive patients with stand-alone atrial fibrillation underwent right-sided monolateral thoracoscopic surgical ablation with a novel integrated uni-bipolar radiofrequency energy delivery and temperature-controlled technology. Atrial fibrillation was persistent in 13 (26.5%) of 49 and long-standing persistent in 36 (73.5%) of 49 patients. Mean ± SD age was 60.6 ± 10.3 years. Median duration of atrial fibrillation was 74 months. Mean ± SD left atrial diameter was 44.7 ± 4.0 mm. Epicardial en bloc isolation of all pulmonary veins (box lesion) and additional ablation of the right atrial free wall was successfully performed via minimally invasive approach without any intraoperative and postoperative major complications. Intraoperative entrance and exit block was achieved in 77.5% (38/49) and 91.8% (45/49) of patients, respectively. Mean ± SD ablation time was 16.3 ± 4.8 minutes. No intensive care unit stay was required. Postoperative sinus rhythm was achieved in 93.8% (30/32) patients, and no pacemaker implantation was required. At 13 months, 87.7% (43/49) of patients were in sinus rhythm; 71.4% (35/49) were free from antiarrhythmic drugs and 75.5% (37/49) from oral anticoagulation. Integrated uni-bipolar radiofrequency ablation technology showed to be effective for the surgical treatment of atrial fibrillation with a total endoscopic approach. A versapolar suction device with extensive right-left atrial lesion set may further improve

  6. Regulacja rynku pracy w kontekście integracji z Unią Europejską

    OpenAIRE

    Wiśniewski, Zenon

    2004-01-01

    The author analyses the problem of labour market regulation. He underlines that the labour market regulation in Poland is connected with qualitatively different problems that in the EU countries. Unemployment is counteracted in completely different institutional conditions. A technological and production gap cannot be diminished, however, without a reform of tie old employment system. Restructuring of the economy calls for creating elastic labour market structures. Reforms going in this direc...

  7. Fixed term employment

    International Nuclear Information System (INIS)

    Durant, B.W.; Schonberner, M.J.

    1999-01-01

    A series of brief notes were included with this presentation which highlighted certain aspects of contract management. Several petroleum companies have realized the benefits of taking advantage of contract personnel to control fixed G and A, manage the impacts on their organization, contain costs, to manage termination costs, and to fill gaps in lean personnel rosters. An independent contractor was described as being someone who is self employed, often with a variety of work experiences. The tax benefits and flexibility of contractor personnel were also described. Some liability aspects of hiring an independent contractor were also reviewed. The courts have developed the following 4 tests to help determine whether an individual is an employee or an independent contractor: (1) the control test, (2) the business integration test, (3) specific result test, and (4) the economic reality test

  8. Authenticity in Employment Relations

    DEFF Research Database (Denmark)

    Tackney, Charles Thomas

    2018-01-01

    Authenticity is developed and deployed as a criterion variable for a theology of the workplace inquiry that combines theory and methodological development with data analysis. The goal is to show that social science method can offer an empirically valid, prophetic dimension to the study of employm......Authenticity is developed and deployed as a criterion variable for a theology of the workplace inquiry that combines theory and methodological development with data analysis. The goal is to show that social science method can offer an empirically valid, prophetic dimension to the study...... of employment and work parameters in light of religious teachings on the social question at national, organizational, or firm-specific levels. The function of a criterion variable is described, noting that the switch from a dependent variable approach introduces an open-system dynamism to social science...

  9. Overexpression of BiP in tobacco alleviates endoplasmic reticulum stress

    NARCIS (Netherlands)

    Leborgne-Castel, N.; Jelitto- Dooren, E.P.W.M. van; Crofts, A.J.; Denecke, J.

    1999-01-01

    To study the role of the lumenal binding protein (BiP) in the transport and secretion of proteins, we have produced plants with altered BiP levels. Transgenic plants overexpressing BiP showed dramatically increased BiP mRNA levels but only a modest increase in BiP protein levels. The presence of

  10. Fuzzy Bi-cooperative games in multilinear extension form

    Czech Academy of Sciences Publication Activity Database

    Borkotokey, S.; Hazarika, P.; Mesiar, Radko

    2015-01-01

    Roč. 259, č. 1 (2015), s. 44-55 ISSN 0165-0114 R&D Projects: GA ČR GAP402/11/0378 Institutional support: RVO:67985556 Keywords : Fuzzy Bi-cooperative games * Bi-cooperative game * Bi-coalition * LG value Subject RIV: BA - General Mathematics Impact factor: 2.098, year: 2015 http://library.utia.cas.cz/separaty/2015/E/mesiar-0442007.pdf

  11. Bi-metallic catalysts, methods of making, and uses thereof

    KAUST Repository

    Basset, Jean-Marie

    2017-01-19

    Provided herein are bi-metallic catalysts, methods of making, and uses thereof. In some embodiments, the bi-metallic catalyst contains two different metal catalysts that can be used in hydrocarbon metathesis reactions, in some embodiments, the methods of making the bi-metallic catalysts can include two steps utilizing a surface organometallic chemistry approach in which the two different metal catalysts are sequentially grafted onto a support.

  12. Bi-amalgamations subject to the arithmetical property

    OpenAIRE

    Kabbaj, S.; Mahdou, N.; Moutui, M. A. S.

    2016-01-01

    This paper establishes necessary and sufficient conditions for a bi-amalgamation to inherit the arithmetical property, with applications on the weak global dimension and transfer of the semihereditary property. The new results compare to previous works carried on various settings of duplications and amalgamations, and capitalize on recent results on bi-amalgamations. All results are backed with new and illustrative examples arising as bi-amalgamations.

  13. Bi-metallic catalysts, methods of making, and uses thereof

    KAUST Repository

    Basset, Jean-Marie; Samantaray, Manoja K.; Dey, Raju; Abou-Hamad, Edy; Kavitake, Santosh

    2017-01-01

    Provided herein are bi-metallic catalysts, methods of making, and uses thereof. In some embodiments, the bi-metallic catalyst contains two different metal catalysts that can be used in hydrocarbon metathesis reactions, in some embodiments, the methods of making the bi-metallic catalysts can include two steps utilizing a surface organometallic chemistry approach in which the two different metal catalysts are sequentially grafted onto a support.

  14. Synthesis of Bi2WO6 nanoparticles and its electrochemical properties in different electrolytes for pseudocapacitor electrodes

    International Nuclear Information System (INIS)

    Nithya, V.D.; Kalai Selvan, R.; Kalpana, D.; Vasylechko, Leonid; Sanjeeviraja, C.

    2013-01-01

    Highlights: • A simple, economical and environmentally benign sonochemical technique was utilized for the synthesis of homogeneous Bi 2 WO 6 nanoparticles. • This is the first attempt to employ Bi 2 WO 6 as a supercapacitor electrode material. • Effect of electrolyte on the capacitive behaviour of the material is studied. • Bi 2 WO 6 displays good capacitive behaviour in 1 M KOH compared with 1 M NaOH and 1 M LiOH and possess sufficient capacity retention. • It presented an energy density of 67 Wh/kg in the potential range from −0.9 V to 0.1 V and it would be a promising negative electrode for supercapacitor. -- Abstract: Nanosized Bi 2 WO 6 particles were successfully synthesized by sonochemical method with an objective to develop an inexpensive and eco-friendly electrode material for supercapacitors. The prepared material was subjected to various thermal, structural, morphological, compositional, electrical and electrochemical studies. Bi 2 WO 6 nanoparticle with homogeneous distribution was achieved through sonochemical process. The lattice parameter and atomic positions of Bi 2 WO 6 structure were refined through Reitveld analysis. The electrochemical performance of Bi 2 WO 6 nanoparticles was investigated in various aqueous electrolytes such as 1 M NaOH, 1 M LiOH, 1 M Na 2 SO 4 , 1 M KOH and 6 M KOH solutions. Among these, the material exhibited an enhanced electrochemical performance in KOH electrolyte due to its smaller hydration sphere radius, high ionic mobility and lower equivalent series resistance. The charge–discharge studies rendered a specific capacitance of 608 F/g in 1 M KOH at a current density of 0.5 mA/cm 2 . Bi 2 WO 6 exhibited an excellent coulombic efficiency and specific capacitance of around 304 F/g at 3 mA/cm 2 in the potential range from −0.9 to 0.1 V vs Hg/HgO in 1 M KOH electrolyte. The above results assured that Bi 2 WO 6 could be utilized as suitable negative electrode material for supercapacitor applications and 1 M

  15. Chemical casting of high-Tc superconducting BiSCCO

    International Nuclear Information System (INIS)

    Toth, L.E.; Das, B.N.; Rayne, R.J.; Bender, B.A.; Lechter, W.L.; Hoff, H.A.; Osofsky, M.S.; Soulen, R.J. Jr.

    1989-01-01

    BiSCCO has been successfully cast into a number of useful shapes. This casting process differs significantly from traditional casting in that the process includes a change in the oxygen content of the melt. A heat treatment is required to restore the original chemistry, properly form the BiSCCO crystal structure and develop the superconducting properties. This paper emphasizes the microstructures of as-cast and heat treated BiSCCO. Casting causes considerable grain alignment of the BiSCCO platelets. The platelets align preferentially along the thermal gradients which exist during the solidification process

  16. High pressure synthesis of BiS2

    DEFF Research Database (Denmark)

    Søndergaard-Pedersen, Simone; Nielsen, Morten Bormann; Bremholm, Martin

    crystal structures and electrical properties.1,2 Up until now, the most sulfur rich phase in the Bi-S phase diagram was Bi2S3.3 For BiS2 the Bi atoms have anisotropic charge distribution and more complex structures are expected when comparing the layered structures of transition metal dichalcogenides....... The possibilities of using high pressure synthesis to discover new phases in the Bi-S binary system were investigated as early as the 1960’s.4 The research led to discovery of a compound with BiS2 stoichiometry, but no structure solution of BiS2 was reported. A reason behind making this new phase is to study...... the physical properties since the related compound Bi2S3 is known to be a thermoelectric material.5 In this research the BiS2 compound was synthesized by a high pressure and high temperature method using a multi-anvil large volume press and the structure was solved by single crystal diffraction. The structure...

  17. On the electronic structure and thermoelectric properties of BiTeBr and BiTeI single crystals and of BiTeI with the addition of BiI3 and CuI

    International Nuclear Information System (INIS)

    Kulbachinskii, Vladimir A.; Kytin, Vladimir G.; Kudryashov, Alexey A.; Kuznetsov, Alexei N.; Shevelkov, Andrei V.

    2012-01-01

    The electronic structures were calculated for BiTeBr and BiTeI using the density-functional theory approach and accounting for the strong spin–orbital interaction. Qualitatively, the band structures for two compounds are similar, showing strong mixing of the p states of all elements in vicinity of the Fermi level, with the band gaps of 0.595 and 0.478 eV for BiTeBr and BiTeI, respectively. The optimized crystal structures show a tendency for the Bi–X (X=Br, I) bond elongation compared to the Bi–Te one. Both compounds are intrinsic n-type semiconductors but display a metallic-like conductivity coupled to rather large thermopower, which is rationalized within the frames of the acoustic phonons scattering model. Because of larger thermopower BiTeBr exhibits a twice higher thermoelectric figure-of-merit near room temperature, ZT=0.17, compared to BiTeI. The addition of 1 mass% of BiI 3 or CuI to BiTeI decreases the mobility of electrons by two orders of magnitude, leading to significantly lower electrical conductivity, but at the same time effectively reduces the thermal conductivity. The prospects of further enhancing the thermoelectric efficiency are briefly discussed. - Graphical abstract: View of the crystal structure of BiTeBr is shown in the figure The optimized crystal structures show a tendency for the Bi–X (X=Br, I) bond elongation compared to the Bi–Te one. The electronic structures were calculated for BiTeBr and BiTeI using the density-functional theory approach and accounting for the strong spin–orbital interaction. Qualitatively, the band structures for two compounds are similar, showing strong mixing of the p states of all elements in vicinity of the Fermi level, with the band gaps of 0.595 and 0.478 eV for BiTeBr and BiTeI, respectively. Both compounds are intrinsic n-type semiconductors but display a metallic-like conductivity coupled to rather large thermopower, which is rationalized within the frames of the acoustic phonons scattering

  18. Unión Monetaria Norteamericana y la enfermedad holandesa en Canadá y México

    Directory of Open Access Journals (Sweden)

    Mario Seccareccia

    2009-05-01

    Full Text Available R. Blecker y M. Seccareccia analizan de manera pormenorizado los efectos que ha tenido el incremento de la demanda de las materias primas, y en particular del petróleo, sobre los tipos de cambio de México y Canadá, y sus repercusiones sobre su dinámica económica. Igualmente profundizan en la relación de las políticas económicas seguidas en ambos países y sus objetivos de inflación. Mediante un esfuerzo comparativo con el sistema monetario europeo, se plantean los retos que supondría la conformación de una Unión Monetaria en la economía de América del Norte (Canadá, Estados Unidos y México.

  19. Marketers as Innovators: how ethnic marketing revisits ethnicity Marketing ethnique et innovation aux États-Unis

    Directory of Open Access Journals (Sweden)

    Marie-Christine Pauwels

    2009-10-01

    Full Text Available L’innovation aux États-Unis est ici vue sous un angle social et culturel. Il ne s’agit plus d’étudier l’innovation technologique, mais l’innovation en matière de produit. L’article aborde la création de valeur à travers la variable ethnique dans le domaine de la vente, du marketing et de la publicité. Les nouvelles tendances en matière d’ethno-marketing sont analysées, en particulier la manière dont les professionnels utilisent la notion d’ethnicité pour vendre des produits de consommation courante à un marché de consommateurs de plus en plus exigeants, soit en ayant recours à une segmentation de ces consommateurs en micro-marchés toujours plus étroits, soit en privilégiant un marketing multi- ou trans-culturel.

  20. La Seguridad Energética y la Estrategia Global de Seguridad de la Unión Europea

    Directory of Open Access Journals (Sweden)

    Ruben Herrero

    2016-10-01

    Full Text Available El presente artículo plantea una definición ampliada del concepto de seguridad energética, yendo más allá del concepto clásico establecido por la Agencia Internacional de la Energía, incorporando cuestiones relativas a la eficiencia energética, la aceptabilidad del modelo energético y los retos que impone el cambio climático, pero sin perder de perspectiva las exigencias y las dinámicas competitivas económicas globales. Sobre la base de este concepto ampliado, se examina la evolución de la seguridad energética en el marco de la Unión Europea, con una atención particular a cómo se concibe la seguridad energética en la Estrategia Global de Seguridad de 2016.

  1. Una política, tres perspectivas : la Unión Europea y el intercambio del banano

    OpenAIRE

    Wiley, James

    2014-01-01

    En julio de 1993, la Unión Europea (U.E.) inició el Reglamento (C.E.E.) Número 404/93 como su nueva política para gobernar la importación del banano. Este acto fue parte de su intento de crear un mercado común entre los quince países miembros. Como el mercado bananero más grande del mundo, la UE y sus políticas tienen un gran impacto sobre la producción y el intercambio de esta fruta, la fruta fresca del volumen más grande del intercambio mundial. Esta ponencia considera la nueva política y s...

  2. Conference: Probing the warped side of our Universe with gravitational waves and computer simulations | 16 September | Uni Dufour

    CERN Multimedia

    2016-01-01

    Probing the warped side of our Universe with gravitational waves and computer simulations, by Kip Thorne, recipient of the Tomalla Prize for Gravity 2016.   "Probing the warped side of our Universe with gravitational waves and computer simulations" Uni Dufour - Auditorium U300 Friday, 16 September at 6 p.m.   Kip Thorne. (Photo: ©Jon Rou) Abstract: A half century ago, John Wheeler challenged his students and colleagues to explore Geometrodynamics: the nonlinear dynamics of curved spacetime. How does the curvature of spacetime behave when roiled in a storm, like a storm at sea with crashing waves. We tried to explore this, and failed. Success eluded us until two new tools became available: computer simulations, and gravitational wave observations. Thorne will describe what these have begun to teach us, and he will offer a vision for the future of Geometrodynamics.

  3. El nuevo enfoque de la política audiovisual de la Unión Europea

    Directory of Open Access Journals (Sweden)

    Lic. Carmina Crusafón Baqués

    1999-01-01

    Full Text Available La política audiovisual de la Unión Europea ha modificado entre 1994 y 1998 su enfoque principal en respuesta a la nueva situación coyuntural que vive el sector en el ámbito mundial Durante este periodo, sus actuaciones han mostrado una primacía económico-industrial (programa MEDIA y el Fondo Europeo de Garantía dejando en segundo plano la dimensión cultural; una mayor coordinación con los proyectos de la sociedad de la información (libro verde sobre la convergencia y el mantenimiento un cierto carácter proteccionista (directiva televisión sin fronteras y el énfasis en el déficit comercial con los Estados Unidos.

  4. UniTV, canal de televisión de la Universidad de Huelva: hacia una TV universitaria de calidad

    Directory of Open Access Journals (Sweden)

    José Ignacio Aguaded Gómez

    2012-01-01

    Full Text Available Las universidades españolas han optado por incorporar el vídeo a los procesos de enseñanza-aprendizaje mediante la integración de contenidos en los portales corporativos de televisión, el uso de tecnologías informáticas y el uso de Internet; con ello pretenden dar un impulso a la docencia y a la inves­tigación mediante la divulgación de los contenidos a través de los medios audiovisuales en red. Con la colaboración del Ministerio de Industria, Turismo y Comercio, a través de Red.es, la Universidad de Huelva cuenta con el canal de televisión universitario, UniTV, donde la formación, investigación, divulga­ción y ciencia son los pilares que fundamentan la producción audiovisual, un portal que cuenta con televisión a la carta y emisión en directo. UniTV, el canal de televisión de la Universidad de Huelva, pretende mediante el uso de tecnologías de la información y la comunicación, a través de internet y de la tecnología streaming, alcanzar un acceso universal para divulgar sus activida­des y conseguir que la educación, la investigación, los proyectos, ciclos de conferencias e información en general de la institución, lleguen a la comunidad universitaria y a la vez al resto del mundo.

  5. A União Europeia num mundo em mudança: Era Trump 2.0?

    Directory of Open Access Journals (Sweden)

    Marco Martins

    2017-05-01

    Full Text Available A presente análise visa compreender como a União Europeia se enquadra nesta nova realidade internacional, na sequência das eleições norte-americanas para Presidente, tendo revertido a escolha em Donald Trump, em detrimento da sua adversária Hillary Clinton. Importa, assim, compreender como a União Europeia se posicionará nas relações internacionais, readaptando a sua política externa, defesa e segurança, para além das consequências do Brexit, necessitando de reencontrar o seu caminho e o seu projeto em nome da construção europeia e de seus valores democráticos, identitários e culturais num mundo em mudança, com o surgimento de novos atores, desde os BRICS ao ciberespaço, desafiando todo o legado imanente da Paz de Vestefália. Estaremos perante uma nova era, uma nova ordem mundial ou apenas numa regressão entre novos e velhos tempos? | The European Union in a changing world. The Trump Era 2.0? The present analysis aims to understand how the European Union fits into this new international reality following the US presidential election, having reversed the election in Donald Trump, to the detriment of his adversary Hillary Clinton. It is therefore important to understand how the European Union will position itself in international relations, by adapting its foreign, defense and security policies, in addition to the consequences of Brexit, needing to rediscover its way and its project in the name of European construction and its democratic, identity and cultural values in a changing world, with the emergence of new actors from the BRICS to cyberspace, defying the entire immanent legacy of Westphalia Peace. Are we facing a new era, a new world order, or just a regression between old and new times?

  6. Synthesis, Analysis, and Testing of BiOBr-Bi2WO6 Photocatalytic Heterojunction Semiconductors

    Directory of Open Access Journals (Sweden)

    Xiangchao Meng

    2015-01-01

    Full Text Available In photocatalysis, the recombination of electron-hole pairs is generally regarded as one of its most serious drawbacks. The synthesis of various composites with heterojunction structures has increasingly shed light on preventing this recombination. In this work, a BiOBr-Bi2WO6 photocatalytic heterojunction semiconductor was synthesized by the facile hydrothermal method and applied in the photocatalytic degradation process. It was determined that both reaction time and temperature significantly affected the crystal structure and morphologies of the photocatalysts. BiOBr (50 at%-Bi2WO6 composites were prepared under optimum synthesis conditions (120°C for 6 h and by theoretically analyzing the DRS results, it was determined that they possessed the suitable band gap (2.61 eV to be stimulated by visible-light irradiation. The photocatalytic activities of the as-prepared photocatalysts were evaluated by the degradation of Rhodamine B (RhB under visible-light irradiation. The experimental conditions, including initial concentration, pH, and catalyst dosage, were explored and the photocatalysts in this system were proven stable enough to be reused for several runs. Moreover, the interpreted mechanism of the heterojunction enhancement effect proved that the synthesis of a heterojunction structure provided an effective method to decrease the recombination rate of the electron-hole pairs, thereby improving the photocatalytic activity.

  7. Response of MnBi-Bi eutectic to freezing rate changes

    Science.gov (United States)

    Nair, M.; Fu, T.-W.; Wilcox, W. R.; Doddi, K.; Ravishankar, P. S.; Larson, D.

    1982-01-01

    Reference is made to a study by Fu and Wilcox (1981), which treated theoretically the influence on freezing rate of sudden changes in translation rate in the Bridgman-Stockbarger technique. This treatment is extended here to a linear ramped translation rate and an oscillatory freezing rate. It is found that oscillations above a few hertz are highly damped in small-diameter apparatus. An experimental test is carried out of the theoretical predictions for a sudden change of translation rate. The MnBi-Bi eutectic is solidified with current-induced interface demarcation. The experimental results accord reasonably well with theory if the silica ampoule wall is assumed to either (1) contribute only a resistance to heat exchange between the sample and the furnace wall or (2) transmit heat effectively in the axial direction by radiation. In an attempt to explain the fact that a finer microstructure is obtained in space, MnBi-Bi microstructure is determined when the freezing rate is increased or decreased rapidly. Preliminary results suggest that fiber branching does not occur as readily as fiber termination.

  8. Las implicaciones del Brexit en los derechos de libre circulación de personas, laborales y de residencia de los ciudadanos de la Unión Europea: el Modelo de Suiza Modificado como la opción más viable para el Reino Unido en la negociación de un nuevo acuerdo con la Unión Europea.

    OpenAIRE

    Lozano Martínez, Bárbara

    2017-01-01

    Un análisis profundo de los derechos de libre circulación de personas, laborales y de residencia de los ciudadanos de la Unión Europea, para poosteriormente analizarlos en distintos escenarios que el Reino Unido podría tomar como base para un nuevo acuerdo con la Unión Europea al formalizarse el Brexit.

  9. First principles study of AlBi

    International Nuclear Information System (INIS)

    Amrani, B.; Achour, H.; Louhibi, S.; Tebboune, A.; Sekkal, N.

    2008-05-01

    Using the first principles method of the full potential linear augmented plane waves (FPLAPW), the structural and the electronic properties of AlBi are investigated. It is found that this compound has a small and direct semiconducting gap at Γ. Through the quasi-harmonic Debye model, in which the phononic effects are considered, the dependences of the volume, the bulk modulus, the variation of the thermal expansion α, as well as the Debye temperature θ D and the heat capacity C v are successfully obtained in the whole range from 0 to 30 GPa and temperature range from 0 to 1200 K. (author)

  10. Implementing Sentinels in the TARGIT BI Suite

    DEFF Research Database (Denmark)

    Middelfart, Morten; Pedersen, Torben Bach

    2011-01-01

    This paper describes the implementation of socalled sentinels in the TARGIT BI Suite. Sentinels are a novel type of rules that can warn a user if one or more measure changes in a multi-dimensional data cube are expected to cause a change to another measure critical to the user. Sentinels notify u...... pattern mining or correlation techniques. We demonstrate, through extensive experiments, that mining and usage of sentinels is feasible with good performance for the typical users on a real, operational data warehouse....

  11. A União Bancária Europeia: seus pilares, objetivos e uma análise de sua efetividade

    Directory of Open Access Journals (Sweden)

    Maxilene Soares Corrêa

    2015-12-01

    Full Text Available A União Bancária Europeia nasce como uma resposta às fragilidades da União Econômica e Monetária evidenciadas pela crise financeira que se instaurou em 2007. Está assentada sobre três pilares: o Mecanismo Único de Supervisão, o Mecanismo Único de Resolução e o Sistema Europeu de Garantia de Depósitos. Este escrito trata da União Bancária, partindo de considerações acerca desses três pilares. Em um segundo momento indica os principais objetivos da implementação da União Bancária, sublinhando os problemas aos quais essa visa dar resposta. Por fim, avança algumas críticas dirigidas ao modelo, realizando uma breve análise de seus pontos negativos e positivos, como forma de avaliar sua efetividade enquanto uma das respostas à crise e instrumento de prevenção de novas crises.

  12. Viscosity overshoot followed by steady state measured in uni-axial elongation of LDPE. Ole Hassager, Henrik Koblitz Rasmussen, Anders Bach and Jens Kromann Nielsen

    DEFF Research Database (Denmark)

    Rasmussen, Henrik Koblitz; Hassager, Ole; Bach, Anders

    2004-01-01

    The transient (e.g. start up of) elongational viscosity of three low-density polyethylene (LDPE) melts (BASF Lupolen 1810H, 1840D and 3020D) was measured using a filament stretching rheometer (FSR) capable of measuring at elevated temperatures. The transient uni-axial elongational viscosity showe...

  13. Comprehensive analysis of the N-glycan biosynthetic pathway using bioinformatics to generate UniCorn: A theoretical N-glycan structure database.

    Science.gov (United States)

    Akune, Yukie; Lin, Chi-Hung; Abrahams, Jodie L; Zhang, Jingyu; Packer, Nicolle H; Aoki-Kinoshita, Kiyoko F; Campbell, Matthew P

    2016-08-05

    Glycan structures attached to proteins are comprised of diverse monosaccharide sequences and linkages that are produced from precursor nucleotide-sugars by a series of glycosyltransferases. Databases of these structures are an essential resource for the interpretation of analytical data and the development of bioinformatics tools. However, with no template to predict what structures are possible the human glycan structure databases are incomplete and rely heavily on the curation of published, experimentally determined, glycan structure data. In this work, a library of 45 human glycosyltransferases was used to generate a theoretical database of N-glycan structures comprised of 15 or less monosaccharide residues. Enzyme specificities were sourced from major online databases including Kyoto Encyclopedia of Genes and Genomes (KEGG) Glycan, Consortium for Functional Glycomics (CFG), Carbohydrate-Active enZymes (CAZy), GlycoGene DataBase (GGDB) and BRENDA. Based on the known activities, more than 1.1 million theoretical structures and 4.7 million synthetic reactions were generated and stored in our database called UniCorn. Furthermore, we analyzed the differences between the predicted glycan structures in UniCorn and those contained in UniCarbKB (www.unicarbkb.org), a database which stores experimentally described glycan structures reported in the literature, and demonstrate that UniCorn can be used to aid in the assignment of ambiguous structures whilst also serving as a discovery database. Copyright © 2016 Elsevier Ltd. All rights reserved.

  14. Womens employment discrimination

    OpenAIRE

    Chernyaeva, V. N.; Черняева, В. Н.

    2014-01-01

    The paper deals with the difficulties faced by women in employment, about stereotypes, that prevent them from getting a decent job and advance their own careers, and the ways to solve this problem. В статье говорится о трудностях, с которыми женщины сталкиваются при трудоустройстве, о стереотипах, которые мешают им получать достойную работу и продвигаться по службе, и о путях решения этой проблемы....

  15. Unusual Concentration Induced Antithermal Quenching of the Bi(2+) Emission from Sr2P2O7:Bi(2.).

    Science.gov (United States)

    Li, Liyi; Peng, Mingying; Viana, Bruno; Wang, Jing; Lei, Bingfu; Liu, Yingliang; Zhang, Qinyuan; Qiu, Jianrong

    2015-06-15

    The resistance of a luminescent material to thermal quenching is essential for the application in high power LEDs. Usually, thermal luminescence quenching becomes more and more serious as the activator concentration increases. Conversely, we found here that a red phosphor Sr2P2O7:Bi(2+) is one of the exceptions to this as we studied the luminescence properties at low (10-300 K) and high (300-500 K) temperatures. As Bi(2+) ions are incorporated into Sr2P2O7, they exhibit the emissions at ∼660 and ∼698 nm at room temperature and are encoded, hereafter, as Bi(1) and Bi(2) due to the substitutions for two different crystallographic sites Sr(1) and Sr(2), respectively, in the compound. However, they will not substitute for these sites equally. At lower dopant concentration, they will occupy preferentially Sr(2) sites partially due to size match. As the concentration increases, more Bi(2+) ions start to occupy the Sr(1) sites. This can be verified by the distinct changes of emission intensity ratio of Bi(2) to Bi(1). As environment temperature increases, the thermal quenching happens, but it can be suppressed by the Bi(2+) concentration increase. This becomes even more pronounced in Bi(2+) heavily doped sample as we decompose the broad emission band into separated Bi(1) and Bi(2) Gaussian peaks. For the sample, the Bi(1) emission at ∼660 nm even shows antithermal-quenching particularly at higher temperatures. This phenomenon is accompanied by the blue shift of the overall emission band and almost no changes of lifetimes. A mechanism is proposed due to volume expansion of the unit cell, the increase of Bi(1) content, and temperature dependent energy transfer between Bi(2) and Bi(1). This work helps us better understand the complex luminescent behavior of Bi(2+) doped materials, and it will be helpful to design in the future the heavily doped phosphor for WLEDs with even better resistance to thermal quenching.

  16. [sup 205]Bi/[sup 206]Bi cyclotron production from Pb-isotopes for absorption studies in humans

    Energy Technology Data Exchange (ETDEWEB)

    Fischer, R.; Dresow, B.; Heinrich, H.C. (Universitaetskrankenhaus Eppendorf, Hamburg (Germany). Abt. Medizinische Biochemie); Wendel, J.; Bechtold, V. (Kernforschungszentrum Karlsruhe GmbH (Germany). Inst. fuer Kernphysik)

    1993-12-01

    Pb(p,xn) thick target excitation functions were measured in the energy range 10-38 MeV in order to optimize the production of isotopically pure radiobismuth from [sup nat]Pb, [sup 206]Pb, and [sup 207]Pb. Additionally, the decay of Po-isotopes from deuteron irradiation of natural bismuth ([sup 209]Bi) was exploited for radiobismuth production. [sup 205]Bi was produced from [sup 206]Pb at 20 MeV with only 2% of [sup 206]Bi at 4 weeks post irradiation. Bismuth compounds as used in the treatment of peptic ulcer were labeled with [sup 205]Bi for absorption studies in animals and subjects. (Author).

  17. Giant magnetostriction effect near onset of spin reorientation in MnBi

    Science.gov (United States)

    Choi, Y.; Ryan, P. J.; McGuire, M. A.; Sales, B. C.; Kim, J.-W.

    2018-05-01

    In materials undergoing spontaneous symmetry breaking transitions, the emergence of multiple competing order parameters is pervasive. Employing in-field x-ray diffraction, we investigate the temperature and magnetic field dependence of the crystallographic structure of MnBi, elucidating the microscopic interplay between lattices and spin. The hexagonal phase of MnBi undergoes a spin reorientation transition (TSR), whereby the easy axis direction changes from the c axis to the basal plane. Across TSR, an abrupt symmetry change is accompanied by a clear sign change in the magnetostrictive coefficient, revealing that this transition corresponds to the onset of the spin reorientation. In the vicinity of TSR, a significantly larger in-plane magnetostrictive effect is observed, presenting the emergence of an intermediate phase that is highly susceptible to an applied magnetic field. X-ray linear dichroism shows that asymmetric Bi and Mn p orbitals do not play a role in the spin reorientation. This work suggests that the spin reorientation is caused by structural modification rather than changes in the local electronic configuration, providing a strategy for manipulating the magnetic anisotropy by external strain.

  18. Ultrathin Topological Insulator Bi 2 Se 3 Nanoribbons Exfoliated by Atomic Force Microscopy

    KAUST Repository

    Hong, Seung Sae; Kundhikanjana, Worasom; Cha, Judy J.; Lai, Keji; Kong, Desheng; Meister, Stefan; Kelly, Michael A.; Shen, Zhi-Xun; Cui, Yi

    2010-01-01

    Ultrathin topological insulator nanostructures, in which coupling between top and bottom surface states takes place, are of great intellectual and practical importance. Due to the weak van der Waals interaction between adjacent quintuple layers (QLs), the layered bismuth selenide (Bi2Se 3), a single Dirac-cone topological insulator with a large bulk gap, can be exfoliated down to a few QLs. In this paper, we report the first controlled mechanical exfoliation of Bi2Se3 nanoribbons (>50 QLs) by an atomic force microscope (AFM) tip down to a single QL. Microwave impedance microscopy is employed to map out the local conductivity of such ultrathin nanoribbons, showing drastic difference in sheet resistance between 1-2 QLs and 4-5 QLs. Transport measurement carried out on an exfoliated (>5 QLs) Bi2Se3 device shows nonmetallic temperature dependence of resistance, in sharp contrast to the metallic behavior seen in thick (>50 QLs) ribbons. These AFM-exfoliated thin nanoribbons afford interesting candidates for studying the transition from quantum spin Hall surface to edge states. © 2010 American Chemical Society.

  19. Acoustic phonon dynamics in thin-films of the topological insulator Bi2Se3

    International Nuclear Information System (INIS)

    Glinka, Yuri D.; Babakiray, Sercan; Johnson, Trent A.; Holcomb, Mikel B.; Lederman, David

    2015-01-01

    Transient reflectivity traces measured for nanometer-sized films (6–40 nm) of the topological insulator Bi 2 Se 3 revealed GHz-range oscillations driven within the relaxation of hot carriers photoexcited with ultrashort (∼100 fs) laser pulses of 1.51 eV photon energy. These oscillations have been suggested to result from acoustic phonon dynamics, including coherent longitudinal acoustic phonons in the form of standing acoustic waves. An increase of oscillation frequency from ∼35 to ∼70 GHz with decreasing film thickness from 40 to 15 nm was attributed to the interplay between two different regimes employing traveling-acoustic-waves for films thicker than 40 nm and the film bulk acoustic wave resonator (FBAWR) modes for films thinner than 40 nm. The amplitude of oscillations decays rapidly for films below 15 nm thick when the indirect intersurface coupling in Bi 2 Se 3 films switches the FBAWR regime to that of the Lamb wave excitation. The frequency range of coherent longitudinal acoustic phonons is in good agreement with elastic properties of Bi 2 Se 3

  20. Classical gluon and graviton radiation from the bi-adjoint scalar double copy

    Science.gov (United States)

    Goldberger, Walter D.; Prabhu, Siddharth G.; Thompson, Jedidiah O.

    2017-09-01

    We find double-copy relations between classical radiating solutions in Yang-Mills theory coupled to dynamical color charges and their counterparts in a cubic bi-adjoint scalar field theory which interacts linearly with particles carrying bi-adjoint charge. The particular color-to-kinematics replacements we employ are motivated by the Bern-Carrasco-Johansson double-copy correspondence for on-shell amplitudes in gauge and gravity theories. They are identical to those recently used to establish relations between classical radiating solutions in gauge theory and in dilaton gravity. Our explicit bi-adjoint solutions are constructed to second order in a perturbative expansion, and map under the double copy onto gauge theory solutions which involve at most cubic gluon self-interactions. If the correspondence is found to persist to higher orders in perturbation theory, our results suggest the possibility of calculating gravitational radiation from colliding compact objects, directly from a scalar field with vastly simpler (purely cubic) Feynman vertices.

  1. Ultrathin Topological Insulator Bi 2 Se 3 Nanoribbons Exfoliated by Atomic Force Microscopy

    KAUST Repository

    Hong, Seung Sae

    2010-08-11

    Ultrathin topological insulator nanostructures, in which coupling between top and bottom surface states takes place, are of great intellectual and practical importance. Due to the weak van der Waals interaction between adjacent quintuple layers (QLs), the layered bismuth selenide (Bi2Se 3), a single Dirac-cone topological insulator with a large bulk gap, can be exfoliated down to a few QLs. In this paper, we report the first controlled mechanical exfoliation of Bi2Se3 nanoribbons (>50 QLs) by an atomic force microscope (AFM) tip down to a single QL. Microwave impedance microscopy is employed to map out the local conductivity of such ultrathin nanoribbons, showing drastic difference in sheet resistance between 1-2 QLs and 4-5 QLs. Transport measurement carried out on an exfoliated (>5 QLs) Bi2Se3 device shows nonmetallic temperature dependence of resistance, in sharp contrast to the metallic behavior seen in thick (>50 QLs) ribbons. These AFM-exfoliated thin nanoribbons afford interesting candidates for studying the transition from quantum spin Hall surface to edge states. © 2010 American Chemical Society.

  2. High electrical conductivity in out of plane direction of electrodeposited Bi2Te3 films

    Directory of Open Access Journals (Sweden)

    Miguel Muñoz Rojo

    2015-08-01

    Full Text Available The out of plane electrical conductivity of highly anisotropic Bi2Te3 films grown via electro-deposition process was determined using four probe current-voltage measurements performed on 4.6 - 7.2 μm thickness Bi2Te3 mesa structures with 80 - 120 μm diameters sandwiched between metallic film electrodes. A three-dimensional finite element model was used to predict the electric field distribution in the measured structures and take into account the non-uniform distribution of the current in the electrodes in the vicinity of the probes. The finite-element modeling shows that significant errors could arise in the measured film electrical conductivity if simpler one-dimensional models are employed. A high electrical conductivity of (3.2 ± 0.4 ⋅ 105 S/m is reported along the out of plane direction for Bi2Te3 films highly oriented in the [1 1 0] direction.

  3. In situ grown hierarchical 50%BiOCl/BiOI hollow flowerlike microspheres on reduced graphene oxide nanosheets for enhanced visible-light photocatalytic degradation of rhodamine B

    Science.gov (United States)

    Su, Xiangde; Yang, Jinjin; Yu, Xiang; Zhu, Yi; Zhang, Yuanming

    2018-03-01

    50%BiOCl/BiOI/reduced graphene oxide (50%BiOCl/BiOI/rGO) composite photocatalyst was synthesized successfully by a facile one-step solvothermal route in this work. Reduction of graphene oxide (GO) took place in the process of solvothermal reaction and a new Bi-C bond between rGO and 50%BiOCl/BiOI was formed. The introduction of rGO affected the morphology of 50%BiOCl/BiOI, resulting in the transformation of 50%BiOCl/BiOI from solid microspheres to hollow microspheres. Both the introduction of rGO and formation of 50%BiOCl/BiOI hollow microspheres can facilitate the light absorption. The strong interaction between 50%BiOCl/BiOI and rGO and the electrical conductivity of rGO greatly improved the effective separation of photogenerated carriers. Hence, GOB-5 demonstrated the highest photocatalytic activity which was over twice of the pristine 50%BiOCl/BiOI in the presence of visible light. Mechanism study revealed that 50%BiOCl/BiOI generated electrons and holes in the presence of visible light, and holes together with rad O2- generated from reduction of O2 by electrons degraded the pollutant directly. Overall, this work provides an excellent reference to the synthesis of chemically bonded BiOX/BiOY (X, Y = Cl, Br, I)/rGO nanocomposite and helps to promote their applications in environmental protection and photoelectric conversion.

  4. Interaction between counter-propagating quantum Hall edge channels in the 3D topological insulator BiSbTeSe2

    NARCIS (Netherlands)

    Li, C.; De Ronde, B.; Nikitin, A.; Huang, Y.; Golden, M.S.; De Visser, A.; Brinkman, A.

    2017-01-01

    The quantum Hall effect is studied in the topological insulator BiSbTeSe2. By employing top- and back-gate electric fields at high magnetic field, the Landau levels of the Dirac cones in the top and bottom topological surface states can be tuned independently. When one surface is tuned to the

  5. Temporary Employment and Perceived Employability: Mediation by Impression Management

    Science.gov (United States)

    De Cuyper, Nele; De Witte, Hans

    2010-01-01

    Perceived employability (PE) has been advanced as the upcoming resource for career development, particularly for temporary workers. The question is how temporary workers become employable. Our hypothesis is that temporary workers more than permanent workers use impression management to become employable, both on the internal and the external labor…

  6. A Conceptual Understanding of Employability: The Employers' View in Rwanda

    Science.gov (United States)

    Bamwesiga, Penelope Mbabazi

    2013-01-01

    Many governments believe that investing in human capital should increase citizens' employability, which is why it is often presented as a solution to the problems of knowledge-based economies and societies, rising unemployment rates and economic competiveness. The aim of this study is to understand employers' views regarding the employability of…

  7. Preparation and characterization of bismuth oxichloride (BiOCl) nanoparticles and nano zerovalent iron (nZVI)

    International Nuclear Information System (INIS)

    Sarwan, Bhawna; Pare, Brijesh; Acharya, Aman Deep

    2017-01-01

    In this work, we have synthesized nano scale zerovalent iron (nZVI) particles by borohydride reduction method and bismuth oxichloride (BiOCl) by a hydrolysis method. X-ray powder diffraction (XRD) was used for the structural and chemical characterization, while scanning/transmission electron microscopy (SEM/TEM) were employed to determine the physical properties of the nanoparticles. The reactivity of synthesized nanoparticles was compared by decolorization of nile blue (NB) dye under visible irradiation. (paper)

  8. The effect of FR enhancement in reactive ion beam sputtered Bi, Gd, Al-substituted iron- garnets: Bi2O3 nanocomposite films

    OpenAIRE

    Berzhansky, V.; Shaposhnikov, A.; Karavainikov, A.; Prokopov, A.; Mikhailova, T.; Lukienko, I.; Kharchenko, Yu.; Miloslavskaya, O.; Kharchenko, N.

    2012-01-01

    The effect of considerable Faraday rotation (FR) and figure of merit (Q) enhancement in Bi, Gd, Al-substituted iron garnets: Bi2O3 nano-composite films produced by separate reactive ion beam sputtered Bi:YIG and Bi2O3 films was found. It reached threefold enhancement of the FR and twofold of the Q one on GGG substrates.

  9. Effect of Bi on the corrosion resistance of zirconium alloys

    International Nuclear Information System (INIS)

    Yao Meiyi; Zhou Bangxin; Li Qiang; Zhang Weipeng; Zhu Li; Zou Linghong; Zhang Jinlong; Peng Jianchao

    2014-01-01

    In order to investigate systematically the effect of Bi addition on the corrosion resistance of zirconium alloys, different zirconium-based alloys, including Zr-4 (Zr-l.5Sn-0.2Fe-0.1Cr), S5 (Zr-0.8Sn-0.35Nb-0.4Fe-0.1Cr), T5 (Zr-0.7Sn-l.0Nb-0.3Fe-0.1Cr) and Zr-1Nb, were adopted to prepare the zirconium alloys containing Bi of 0∼0.5% in mass fraction. These alloys were denoted as Zr-4 + xBi, S5 + xBi, T5 + xBi and Zr-1Nb + xBi, respectively. The corrosion behavior of these specimens was investigated by autoclave testing in lithiated water with 0.01 M LiOH or deionized water at 360 ℃/18.6 MPa and in superheated steam at 400 ℃/10.3 MPa. The microstructure of the alloys was examined by TEM and the second phase particles (SPPs) were analyzed by EDS. Microstructure observation shows that the addition of Bi promotes the precipitation of Sn as second phase particles (SPPs) because Sn is in solid solution in α-Zr matrix in Zr-4, S5 and T5 alloys. The concentration of Bi dissolved in α-Zr matrix increase with the increase of Nb in the alloys, and the excess Bi precipitates as Bi-containing SPPs. The corrosion results show that the effect of Bi addition on the corrosion behavior of different zirconium-based alloys is very complicated, depending on their compositions and corrosion conditions. In the case of higher Bi concentration in α-Zr, the zirconium alloys exhibit better corrosion resistance. However, in the case of precipitation of Bi-containing SPPs, the corrosion resistance gets worse. This indicates that the solid solution of Bi in α-Zr matrix can improve the corrosion resistance, while the precipitation of the Bi-containing SPPs is harmful to the corrosion resistance. (authors)

  10. Mammogram retrieval through machine learning within BI-RADS standards.

    Science.gov (United States)

    Wei, Chia-Hung; Li, Yue; Huang, Pai Jung

    2011-08-01

    A content-based mammogram retrieval system can support usual comparisons made on images by physicians, answering similarity queries over images stored in the database. The importance of searching for similar mammograms lies in the fact that physicians usually try to recall similar cases by seeking images that are pathologically similar to a given image. This paper presents a content-based mammogram retrieval system, which employs a query example to search for similar mammograms in the database. In this system the mammographic lesions are interpreted based on their medical characteristics specified in the Breast Imaging Reporting and Data System (BI-RADS) standards. A hierarchical similarity measurement scheme based on a distance weighting function is proposed to model user's perception and maximizes the effectiveness of each feature in a mammographic descriptor. A machine learning approach based on support vector machines and user's relevance feedback is also proposed to analyze the user's information need in order to retrieve target images more accurately. Experimental results demonstrate that the proposed machine learning approach with Radial Basis Function (RBF) kernel function achieves the best performance among all tested ones. Furthermore, the results also show that the proposed learning approach can improve retrieval performance when applied to retrieve mammograms with similar mass and calcification lesions, respectively. Copyright © 2011 Elsevier Inc. All rights reserved.

  11. Photoreduction of non-noble metal Bi on the surface of Bi{sub 2}WO{sub 6} for enhanced visible light photocatalysis

    Energy Technology Data Exchange (ETDEWEB)

    Zhang, Xiaojing [State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, No. 8, Xindu Road, Xindu District, Chengdu 610500 (China); The Center of New Energy Materials and Technology, School of Materials Science and Engineering, Southwest Petroleum University, No. 8, Xindu Road, Xindu District, Chengdu 610500 (China); Yu, Shan; Liu, Yang; Zhang, Qian [The Center of New Energy Materials and Technology, School of Materials Science and Engineering, Southwest Petroleum University, No. 8, Xindu Road, Xindu District, Chengdu 610500 (China); Zhou, Ying, E-mail: yzhou@swpu.edu.cn [State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, No. 8, Xindu Road, Xindu District, Chengdu 610500 (China); The Center of New Energy Materials and Technology, School of Materials Science and Engineering, Southwest Petroleum University, No. 8, Xindu Road, Xindu District, Chengdu 610500 (China)

    2017-02-28

    Highlights: • Bi{sub 2}WO{sub 6}-Bi composite was synthesized by in situ photoreduction of Bi{sub 2}WO{sub 6}. • Bi{sub 2}WO{sub 6}-Bi exhibits improved photocatalytic efficiency towards degradation of Rhodamine B. • The generation of elemental Bi in Bi{sub 2}WO{sub 6}-Bi induces vacancy and structure distortion of Bi{sub 2}WO{sub 6}. • The surface oxygen adsorption mode changes from hydroxyl group on Bi{sub 2}WO{sub 6} to molecular oxygen on Bi{sub 2}WO{sub 6}-Bi. - Abstract: In this report, Bi{sub 2}WO{sub 6}-Bi composite was prepared through an in situ photoreduction method and was characterized systematically by X-Ray diffraction, transmission electron microscopy, X-Ray photoelectron spectroscopy and UV-vis diffuse reflectance spectroscopy. The as-prepared Bi{sub 2}WO{sub 6}-Bi maintains the same crystal structure with the pristine Bi{sub 2}WO{sub 6} regardless of some surface defects. Nevertheless, these surface defects result in the change of surface oxygen adsorption mode from hydroxyl to molecular oxygen on Bi{sub 2}WO{sub 6}. Photocatalytic activity over Bi{sub 2}WO{sub 6}-Bi is 2.4 times higher than that of Bi{sub 2}WO{sub 6} towards the degradation of organic dye Rhodamine B (RhB) under visible light irradiation (λ > 420 nm). A deep study shows that cleavage of benzene ring is the main pathway for RhB degradation over Bi{sub 2}WO{sub 6}, but both the benzene cleavage and de-ethylation pathway coexist for RhB decomposition in the presence of Bi{sub 2}WO{sub 6}-Bi as the photocatalyst. Photoelectrochemical study including transient photocurrent tests and electrochemical impedance spectroscopy measurements shows that Bi{sub 2}WO{sub 6}-Bi could facilitate the charge transfer process compared to Bi{sub 2}WO{sub 6}. These data above has indicated a new insight into the promotion mechanism based on Bi related heterostructures.

  12. The Texts of the Agency's Agreements with the United Nations; Texte Des Accords Conclus Entre L'Agence Et L'Organisation Des Nations Unies

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1959-10-30

    The texts of the following agreements and supplementary agreements between the Agency and the United Nations are reproduced in this document for the information of all Members of the Agency: I. A. Agreement Governing the Relationship Between the United Nations and the International Atomic Energy Agency; B. Protocol Concerning the Entry into Force of the Agreement between the United Nations and the International Atomic Energy Agency; II. Administrative Arrangement Concerning the Use of the United Nations Laissez-Passer by Officials of the International Atomic Energy Agency; and III. Agreement for the Admission of the International Atomic Energy Agency into the United Nations Joint Staff Pension Fund [French] Le texte des accords et des accords additionnels ci-apres, conclus entre l'Agence et l'Organisation des Nations Unies, est reproduit dans le present document pour l'information de tous les Membres de l'Agence. A.Accord regissant les relations entre l'Organisation des Nations Unies et l'Agence internationale de l'energie atomique; B.Protocole relatif a l'entree en vigueur de l'accord conclu entre l'Organisation des Nations Unies et l'Agence internationale de l'energie atomique; II.Dispositions administratives concernant l'utilisation du laissez-passer de l'Organisation des Nations Unies par les fonctionnaires de l'Agence internationale de l'energie atomique; III.Accord en vue de l'admission de l'Agence internationale de l'energie atomique a la Caisse commune des pensions du personnel des Nations Unies.

  13. Retos de la política de ayuda humanitaria de la Unión Europea: entre la coherencia y la independencia

    Directory of Open Access Journals (Sweden)

    Enriqueta Serrano Caballero

    2017-06-01

    Full Text Available El objetivo de este trabajo es contribuir a la comprensión de la ayuda humanitaria de la Unión Europea (UE, con la entrada en vigor del Tratado de Lisboa (TdL, a partir del análisis del Reglamento (CE 1257/96 del Consejo de la Unión Europea, del Consenso Europeo de la ayuda humanitaria de la Unión Europea (en vigor desde 2008 y del artículo 214 del Tratado de Funcionamiento de la Unión Europea (TFUE del TDL. En este trabajo se aborda el reto que tiene la UE para ofrecer una ayuda humanitarian independiente, al responder a las emergencias internacionales, al tiempo que trata de coordinar y dotar de mayor coherencia a su política exterior, a partir del análisis de la manera como la Unión concilia estos objetivos conflictivos. En particular, se estudia cómo interactúan las políticas de cooperación para el desarrollo y la de ayuda humanitaria de la UE, la política de comercio común, y la política exterior y de seguridad. Por último, en las consideraciones finales se argumenta que a pesar de que la ayuda humanitaria se haya incorporado en el Tratado de Lisboa como una política más de su acción exterior, esta debe ser independiente, al estar sustentada en la solidaridad internacional, y no en los principios aplicables al resto de las políticas de acción exterior, lo que dificulta establecer sinergias positivas con las otras políticas de la acción exterior de la UE.

  14. Single-employer Pension Plans

    Data.gov (United States)

    Pension Benefit Guaranty Corporation — This spreadsheet lists the active single-employer pensions plans insured by PBGC. Plans are identified by name, employer identification number (EIN) and plan number...

  15. Employment relations, flexibility and risk

    DEFF Research Database (Denmark)

    Jensen, Carsten Strøby

    Employment relations literature often distinguishes between social democratic/corporatist models of employment relations and liberal models of employment relations as they are seen as opposite or at least different ways of organizing labor markets. They are often characterized as having very...... different risk profiles in terms of relationships between employees, employers, and the state. Low levels of labor market regulation very often characterize the liberal models of employment relations as we know them from, for instance, the USA and the UK. This means that employment conditions are very often...... insecure and that the burden of unemployment risk mostly lies with the employees rather than the employer. Corporatist – or social democratic – employment relations models are, in contrast to the liberal models, often characterized by stricter regulation of the labor market and by high standards...

  16. Employment challenges in the future

    DEFF Research Database (Denmark)

    2011-01-01

    Discussion of challenges in employment challenges in Europe and a brief discription of the Danish flexicurity system......Discussion of challenges in employment challenges in Europe and a brief discription of the Danish flexicurity system...

  17. Effect of epoxy impregnation on strain distribution of materials in Bi2223 superconducting coils by using synchrotron X-ray diffraction

    Energy Technology Data Exchange (ETDEWEB)

    Jin, Xinzhe, E-mail: xinzhe.jin@riken.jp [Center for Life Science Technologies, RIKEN, Yokohama-shi, Kanagawa 230-0045 (Japan); Osamura, Kozo [Research Institute for Applied Sciences, Sakyo-ku, Kyoto 606-8202 (Japan); Machiya, Shutaro [Daido University, Minami-ku, Nagoya 457-8530 (Japan); Kajiwara, Kentaro [Japan Synchrotron Radiation Research Institute, Sayo, Hyogo 679-5198 (Japan); Shobu, Takahisa [Japan Atomic Energy Agency, Sayo, Hyogo 679-5148 (Japan); Maeda, Hideaki [Center for Life Science Technologies, RIKEN, Yokohama-shi, Kanagawa 230-0045 (Japan)

    2015-11-25

    Synchrotron X-rays have been used to observe strain distributions in composite materials such as superconducting wires with a thickness of less than about 2 mm. In applications that employ wound coils of superconducting wire, it is necessary to understand the strain distribution within the coiled wire. Superconducting wires such as Bi2223 and REBCO wires approximately 4–5 mm wide are commercially available. Coiled wires of this width are too thick to easily measure using conventional X-ray techniques, especially the inner strain, because the penetration depth tends to be around 2 mm. Therefore, the beam penetration must be improved, and it is known that the penetration depth of an X-ray beam depends upon the beam energy, beam intensity, measurement material, and measurement method. In this study, we used a white X-ray diffractometer at SPring-8 to develop a method of observing the strain distribution in Bi2223 superconducting coils winded by a 4.5 mm wide Bi2223 wire. We successfully observed a clear (400) peak of the Bi2223 phase by an appropriate measurement condition, and then observed the strains of each material in the Bi2223 coils with and without epoxy impregnation. This is the first time that we have obtained the strain of a Bi2223 phase in coiled wire using synchrotron X-ray diffraction. Further synchrotron-based study of superconducting coils will be useful in the development of advanced high-field magnets. The appropriate measurement method and the obtained measurement results are presented in this paper. - Highlights: • We successfully obtained clear peaks of Bi2223 phase in 4.5 mm thick coils. • The strain behaviors of materials in the coil correspond to a three turn cycle model. • A uniform strain distribution of the Bi2223 phase was obtained by epoxy impregnation.

  18. Le travail, marchandise fictive ? 100 ans de marchandisation de la main d’œuvre mexicaine aux États-Unis

    Directory of Open Access Journals (Sweden)

    Yves-Marie Abraham

    2008-12-01

    Full Text Available Pour Karl Polanyi, la société de marché est impossible, car elle suppose de traiter le travail, la terre et la monnaie comme des marchandises, ce qui ne peut qu’être destructeur de la société. A partir d’une analyse de l’utilisation de la main d’œuvre mexicaine par les employeurs américains depuis 100 ans, nous tentons de montrer que cette marchandisation est tout à fait possible en ce qui concerne le travail. Elle consiste, dans son principe, à réduire l’être humain à sa seule force de travail, tout en restant dans le cadre formel du salariat. Dans le cas des travailleurs mexicains, qu’il s’agisse d’ouvriers agricoles bénéficiant d’un contrat de travail temporaire sur le sol américain, d’employés de maquiladoras sur le sol mexicain ou de travailleurs sans-papiers vivant aux États-Unis, la frontière territoriale entre les deux pays apparaît comme un moyen particulièrement efficace pour accomplir cette réduction. C’est dire aussi que cette marchandisation du travail n’est pas forcément la conséquence de la mise en place de marchés autorégulateurs, contrairement à ce que soutient Polanyi.For Karl Polanyi, market society is impossible, since it supposes that work, land and money be treated as merchandise, which can only destroy society. On the basis of the analysis of the utilisation of Mexican labor by US firms over 100 years, this paper tries to show that merchandisation is quite possible as concerns work. It reduces the human being to his sole work force, while staying in the formal context of salaried work. In the case of Mexican workers, whether it be farm workers with temporary contracts in the US, or employees of maquiladoras on the Mexican soil, or illegal workers in the US, the territorial frontier between the two countries apears a particularly efficient way to accomplish this redcuction. The merchandisation of work is not necessarily the consequence of the establishment of autoregulating

  19. Atypical work and employment continuity

    OpenAIRE

    Addison, John T.; Surfield, Christopher J.

    2009-01-01

    Atypical employment arrangements such as agency temporary work and contracting have long been criticized as offering more precarious and unstable work than regular employment. Using data from two datasets – the CAEAS and the NLSY79 – we determine whether workers who take such jobs rather than regular employment, or the alternative of continued job search, subsequently experience greater or lesser employment continuity. Observed differences between the various working arrangements are starkest...

  20. New Partnerships--New Interests: An Ethnographic Investigation Some of the Effects of Employer Involvement in Trade Union Education

    Science.gov (United States)

    Beach, Dennis; Carlen, Margata

    2009-01-01

    The head gangman in the Swedish building trade is a worker elected organiser in a gang comprising between about 4 and 16 workers and an "on-site" and trained representative of the trades union. In 2002 the employer association for the building industry in Sweden (BI) and the Swedish Building and Allied Trades Union (SBATU) signed a joint…

  1. Bi-orderings on pure braided Thompson's groups

    OpenAIRE

    Burillo, Jose; Gonzalez-Meneses, Juan

    2006-01-01

    In this paper it is proved that the pure braided Thompson’s group BF admits a bi-order, analog to the bi-order of the pure braid groups. Ministerio de Educación y Ciencia Fondo Europeo de Desarrollo Regional

  2. Construction of a bimolecular fluorescence complementation (BiFC ...

    African Journals Online (AJOL)

    Protein–protein interactions are essential for signal transduction in cells. Bimolecular fluorescence complementation (BiFC) is a novel technology that utilises green fluorescent proteins to visualize protein–protein interactions and subcellular protein localisation. BiFC based on pSATN vectors are a good system for ...

  3. BiFeO3 Crystal Structure at Low Temperatures

    International Nuclear Information System (INIS)

    Palewicz, A.; Sosnowska, I.; Przenioslo, R.; Hewat, A.W.

    2010-01-01

    The crystal and magnetic structure of BiFeO 3 have been studied with the use of high resolution neutron diffraction between 5 K and 300 K. The atomic coordinates in BiFeO 3 are almost unchanged between 5 K and 300 K. (authors)

  4. Bi-cooperative games in bipolar fuzzy settings

    Czech Academy of Sciences Publication Activity Database

    Hazarika, P.; Borkotokey, S.; Mesiar, Radko

    2018-01-01

    Roč. 47, č. 1 (2018), s. 51-66 ISSN 0308-1079 Institutional support: RVO:67985556 Keywords : Bi-cooperative games * bipolar fuzzy bi-coalition * Shapley function Subject RIV: BA - General Mathematics Impact factor: 2.490, year: 2016 http://library.utia.cas.cz/separaty/2018/E/mesiar-0485377.pdf

  5. Center conditions and limit cycles for BiLienard systems

    Directory of Open Access Journals (Sweden)

    Jaume Gine

    2017-03-01

    Full Text Available In this article we study the center problem for polynomial BiLienard systems of degree n. Computing the focal values and using Grobner bases we find the center conditions for such systems for n=6. We also establish a conjecture about the center conditions for polynomial BiLienard systems of arbitrary degree.

  6. Structural, elastic, electronic and optical properties of bi-alkali ...

    Indian Academy of Sciences (India)

    The structural parameters, elastic constants, electronic and optical properties of the bi-alkali ... and efficient method for the calculation of the ground-state ... Figure 2. Optimization curve (E–V) of the bi-alkali antimonides: (a) Na2KSb, (b) Na2RbSb, (c) Na2CsSb, .... ical shape of the charge distributions in the contour plots.

  7. Tri-maximal vs. bi-maximal neutrino mixing

    International Nuclear Information System (INIS)

    Scott, W.G

    2000-01-01

    It is argued that data from atmospheric and solar neutrino experiments point strongly to tri-maximal or bi-maximal lepton mixing. While ('optimised') bi-maximal mixing gives an excellent a posteriori fit to the data, tri-maximal mixing is an a priori hypothesis, which is not excluded, taking account of terrestrial matter effects

  8. Scavenger Receptor BI Plays a Role in Facilitating Chylomicron Metabolism

    NARCIS (Netherlands)

    Out, R.; Kruijt, J.K.; Rensen, P.C.N.; Hildebrand, R.B.; Vos, P. de; Eck, M. van; Berkel, T.J.C. van

    2004-01-01

    The function of scavenger receptor class B type I (SR-BI) in mediating the selective uptake of high density lipoprotein (HDL) cholesterol esters is well established. However, the potential role of SR-BI in chylomicron and chylomicron remnant metabolism is largely unknown. In the present

  9. Genetic Variant of the Scavenger Receptor BI in Humans

    NARCIS (Netherlands)

    Vergeer, Menno; Korporaal, Suzanne J. A.; Franssen, Remco; Meurs, Illiana; Out, Ruud; Hovingh, G. Kees; Hoekstra, Menno; Sierts, Jeroen A.; Dallinga-Thie, Geesje M.; Motazacker, Mohammad Mahdi; Holleboom, Adriaan G.; van Berkel, Theo J. C.; Kastelein, John J. P.; van Eck, Miranda; Kuivenhoven, Jan Albert

    2011-01-01

    BACKGROUND In mice, the scavenger receptor class B type I (SR-BI) is essential for the delivery of high-density lipoprotein (HDL) cholesterol to the liver and steroidogenic organs. Paradoxically, elevated HDL cholesterol levels are associated with increased atherosclerosis in SR-BI-knockout mice. It

  10. Genetic variant of the scavenger receptor BI in humans

    NARCIS (Netherlands)

    Vergeer, Menno; Korporaal, Suzanne J A; Franssen, Remco; Meurs, Illiana; Out, Ruud; Hovingh, G Kees; Hoekstra, Menno; Sierts, Jeroen A; Dallinga-Thie, Geesje M; Motazacker, Mohammad Mahdi; Holleboom, Adriaan G; Van Berkel, Theo J C; Kastelein, John J P; Van Eck, Miranda; Kuivenhoven, Jan Albert

    2011-01-01

    BACKGROUND: In mice, the scavenger receptor class B type I (SR-BI) is essential for the delivery of high-density lipoprotein (HDL) cholesterol to the liver and steroidogenic organs. Paradoxically, elevated HDL cholesterol levels are associated with increased atherosclerosis in SR-BI-knockout mice.

  11. Synthesis of BiFeO3 by carbonate precipitation

    Indian Academy of Sciences (India)

    tional ceramic synthesis approach of mixing and heating the oxides of Bi and Fe ... −1 . Phase identification was carried out by X-ray powder diffraction using a PAN analytic ... of the total Fe ions in the starting solution have entered the. Bi2CO5 ...

  12. The Netherlands: self-employed

    NARCIS (Netherlands)

    Houtman, I.L.D.

    2009-01-01

    This is the national contribution to the CAR on self-employed workers in the Netherlands. In this national contribution information is provided on self-employed workers in relation to (1) legal provisions and social security, (2) recent trends in self-employment with no employees, (3) collective

  13. Business/Employers Influenza Toolkit

    Centers for Disease Control (CDC) Podcasts

    This podcast promotes the "Make It Your Business To Fight The Flu" toolkit for Businesses and Employers. The toolkit provides information and recommended strategies to help businesses and employers promote the seasonal flu vaccine. Additionally, employers will find flyers, posters, and other materials to post and distribute in the workplace.

  14. One step synthesis of Bi@Bi{sub 2}O{sub 3}@carboxylate-rich carbon spheres with enhanced photocatalytic performance

    Energy Technology Data Exchange (ETDEWEB)

    Qu, Lingling [School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013 (China); Luo, Zhijun, E-mail: lzj@ujs.edu.cn [School of the Environment, Jiangsu University, Zhenjiang 212013 (China); State Key Laboratory of Coordination Chemistry, Nanjing University, Nanjing 210093 (China); Tang, Chao [Maple Leaf International High School, Zhenjiang 212013 (China)

    2013-11-15

    Graphical abstract: Functional groups of sodium gluconate play synergetic roles in the formation of Bi@Bi{sub 2}O{sub 3}@carboxylate-rich carbon core–shell nanosturctures (Bi@Bi{sub 2}O{sub 3}@CRCSs). Bi@Bi{sub 2}O{sub 3}@CRCSs exhibits significant enhanced photocatalytic activity under visible light irradiation. - Highlights: • One step synthesis of Bi@Bi{sub 2}O{sub 3}@carboxylate-rich carbon spheres. • Functional groups of sodium gluconate play synergetic roles in the formation of Bi@Bi{sub 2}O{sub 3}@CRCSs. • Bi@Bi{sub 2}O{sub 3}@CRCSs exhibits enhanced photocatalytic activity under visible light irradiation. - Abstract: Bi@Bi{sub 2}O{sub 3}@carboxylate-rich carbon core-shell nanosturctures (Bi@Bi{sub 2}O{sub 3}@CRCSs) have been synthesized via a one-step method. The core–shell nanosturctures of the as-prepared samples were confirmed by X-ray powder diffraction (XRD), X-ray photoelectron spectroscopy (XPS), transmission electron microscopy (TEM), and Raman spectroscopy. The formation of Bi@Bi{sub 2}O{sub 3}@CRCSs core–shell nanosturctures should attribute to the synergetic roles of different functional groups of sodium gluconate. Bi@Bi{sub 2}O{sub 3}@CRCSs exhibits significant enhanced photocatalytic activity under visible light irradiation (λ > 420 nm) and shows an O{sub 2}-dependent feature. According to trapping experiments of radicals and holes, hydroxyl radicals were not the main active oxidative species in the photocatalytic degradation of MB, but O{sub 2}·{sup −} are the main active oxidative species.

  15. Employment status, employment functioning, and barriers to employment among VA primary care patients.

    Science.gov (United States)

    Zivin, Kara; Yosef, Matheos; Levine, Debra S; Abraham, Kristen M; Miller, Erin M; Henry, Jennifer; Nelson, C Beau; Pfeiffer, Paul N; Sripada, Rebecca K; Harrod, Molly; Valenstein, Marcia

    2016-03-15

    Prior research found lower employment rates among working-aged patients who use the VA than among non-Veterans or Veterans who do not use the VA, with the lowest reported employment rates among VA patients with mental disorders. This study assessed employment status, employment functioning, and barriers to employment among VA patients treated in primary care settings, and examined how depression and anxiety were associated with these outcomes. The sample included 287 VA patients treated in primary care in a large Midwestern VA Medical Center. Bivariate and multivariable analyses were conducted examining associations between socio-demographic and clinical predictors of six employment domains, including: employment status, job search self-efficacy, work performance, concerns about job loss among employed Veterans, and employment barriers and likelihood of job seeking among not employed Veterans. 54% of respondents were employed, 36% were not employed, and 10% were economically inactive. In adjusted analyses, participants with depression or anxiety (43%) were less likely to be employed, had lower job search self-efficacy, had lower levels of work performance, and reported more employment barriers. Depression and anxiety were not associated with perceived likelihood of job loss among employed or likelihood of job seeking among not employed. Single VA primary care clinic; cross-sectional study. Employment rates are low among working-aged VA primary care patients, particularly those with mental health conditions. Offering primary care interventions to patients that address mental health issues, job search self-efficacy, and work performance may be important in improving health, work, and economic outcomes. Published by Elsevier B.V.

  16. Dynamics and control of twisting bi-stable structures

    Science.gov (United States)

    Arrieta, Andres F.; van Gemmeren, Valentin; Anderson, Aaron J.; Weaver, Paul M.

    2018-02-01

    Compliance-based morphing structures have the potential to offer large shape adaptation, high stiffness and low weight, while reducing complexity, friction, and scalability problems of mechanism based systems. A promising class of structure that enables these characteristics are multi-stable structures given their ability to exhibit large deflections and rotations without the expensive need for continuous actuation, with the latter only required intermittently. Furthermore, multi-stable structures exhibit inherently fast response due to the snap-through instability governing changes between stable states, enabling rapid configuration switching between the discrete number of programmed shapes of the structure. In this paper, the design and utilisation of the inherent nonlinear dynamics of bi-stable twisting I-beam structures for actuation with low strain piezoelectric materials is presented. The I-beam structure consists of three compliant components assembled into a monolithic single element, free of moving parts, and showing large deflections between two stable states. Finite element analysis is utilised to uncover the distribution of strain across the width of the flange, guiding the choice of positioning for piezoelectric actuators. In addition, the actuation authority is maximised by calculating the generalised coupling coefficient for different positions of the piezoelectric actuators. The results obtained are employed to tailor and test I-beam designs exhibiting desired large deflection between stable states, while still enabling the activation of snap-through with the low strain piezoelectric actuators. To this end, the dynamic response of the I-beams to piezoelectric excitation is investigated, revealing that resonant excitations are insufficient to dynamically trigger snap-through. A novel bang-bang control strategy, which exploits the nonlinear dynamics of the structure successfully triggers both single and constant snap-through between the stable states

  17. Targeting SR-BI for cancer diagnostics, imaging and therapy

    Directory of Open Access Journals (Sweden)

    Maneesha Amrita Rajora

    2016-09-01

    Full Text Available Scavenger receptor class B type I (SR-BI plays an important role in trafficking cholesteryl esters between the core of high density lipoprotein and the liver. Interestingly, this integral membrane protein receptor is also implicated in the metabolism of cholesterol by cancer cells, whereby overexpression of SR-BI has been observed in a number of tumours and cancer cell lines, including breast and prostate cancers. Consequently, SR-BI has recently gained attention as a cancer biomarker and exciting target for the direct cytosolic delivery of therapeutic agents. This brief review highlights these key developments in SR-BI-targeted cancer therapies and imaging probes. Special attention is given to the exploration of high density lipoprotein nanomimetic platforms that take advantage of upregulated SR-BI expression to facilitate targeted drug-delivery and cancer diagnostics, and promising future directions in the development of these agents.

  18. Bi-cooperative games in bipolar fuzzy settings

    Science.gov (United States)

    Hazarika, Pankaj; Borkotokey, Surajit; Mesiar, Radko

    2018-01-01

    In this paper, we introduce the notion of a bi-cooperative game with Bipolar Fuzzy Bi-coalitions and discuss the related properties. In many decision-making situations, players show bipolar motives while cooperating among themselves. This is modelled in both crisp and fuzzy environments. Bi-cooperative games with fuzzy bi-coalitions have already been proposed under the product order of bi-coalitions where one had memberships in [0, 1]. In the present paper, we adopt the alternative ordering: ordering by monotonicity and account for players' memberships in ?, a break from the previous formulation. This simplifies the model to a great extent. The corresponding Shapley axioms are proposed. An explicit form of the Shapley value to a particular class of such games is also obtained. Our study is supplemented with an illustrative example.

  19. Interaction of submonolayer Bi films with the Si(100) surface

    International Nuclear Information System (INIS)

    Goryachko, A.M.; Melnik, P.V.; Nakhodkin, M.G.

    1999-01-01

    Scanning tunneling microscopy and Auger electron spectroscopy were used to investigate interaction of submonolayer Bi films with the Si(100)-2x1 surface. Ultra small Bi amounts (≤ 0.15ML) do not form ordered structures, if deposited at room temperature. Annealing at 400 degree C causes Bi to coalesce into small islands of the densely packed 2x1 phase. Simultaneously, vacancy clusters are produced in the substrate, which remain after desorption of Bi at 600 degree C. In contrast, room temperature deposition and thermal desorption of larger Bi amounts (≥ 0.25 ML) produces vacancies grouped into lines. Further annealing of such a substrate in the temperature range of 600 degree C ≤ T ≤ 750 degree C causes the phase transition between the Si(100)-2xn and Si(100)-c(4x4)

  20. BiVO4 nanoparticles: Preparation, characterization and photocatalytic activity

    Directory of Open Access Journals (Sweden)

    Venkataraman Sivakumar

    2015-12-01

    Full Text Available Bismuth vanadate (BiVO4 nanoparticles were synthesized by a simple thermal decomposition method. The synthesized bismuth vanadate nanoparticles were characterized by X-ray diffraction analysis, it is found that the synthesized sample belongs to monoclinic BiVO4. Fourier transform infrared spectroscopy confirms the formation of Bi-O bond in the sample. Ultraviolet–Visible (DRS-UV–Visible spectroscopy and photoluminescence spectroscopy reveal the optical property of the BiVO4 nanoparticles. The morphology was identified by both scanning electron microscopy and high-resolution transmission electron microscopy. Further, the photocatalytic activity of BiVO4 nanoparticles was investigated by photodegradation of methylene blue as a model organic pollutant.

  1. Effect of Silver Doping on Transport Properties of Bi2Se3: AgxBi2Se3 and Bi2-xAgxSe3

    Science.gov (United States)

    Zhang, Min; Wei, Zhan-Tao

    2018-05-01

    Ag-doped Bi2Se3 with the formula AgxBi2Se3 and Bi2-xAgxSe3 were prepared and their electrical and magnetic transport properties have been investigated to study the influence of silver doping on transport properties of Bi2Se3 with different Ag-doped method. All samples exhibited metallic resistivity and the resistivity increased with increasing Ag concentration. The lattice parameter c of Ag-substituted and Ag-intercalated samples displays a contrary change as the Ag concentration increased. For the Ag-intercalated samples, both the resistance upturn were observed in the curves of temperature dependent of resistivity and temperature dependent of magnetoresistance, respectively, indicating that the enhanced surface effect was obtained in those samples. Monotonously, field-induced MR peaks around 200 K were also observed in those samples. Similar behaviors were not observed in the Ag-substituted samples.

  2. Effect of Silver Doping on Transport Properties of Bi2Se3: AgxBi2Se3 and Bi2-xAgxSe3

    Science.gov (United States)

    Zhang, Min; Wei, Zhan-Tao

    2018-03-01

    Ag-doped Bi2Se3 with the formula AgxBi2Se3 and Bi2-xAgxSe3 were prepared and their electrical and magnetic transport properties have been investigated to study the influence of silver doping on transport properties of Bi2Se3 with different Ag-doped method. All samples exhibited metallic resistivity and the resistivity increased with increasing Ag concentration. The lattice parameter c of Ag-substituted and Ag-intercalated samples displays a contrary change as the Ag concentration increased. For the Ag-intercalated samples, both the resistance upturn were observed in the curves of temperature dependent of resistivity and temperature dependent of magnetoresistance, respectively, indicating that the enhanced surface effect was obtained in those samples. Monotonously, field-induced MR peaks around 200 K were also observed in those samples. Similar behaviors were not observed in the Ag-substituted samples.

  3. Fatores associados ao desperdício de recursos da saúde repassados pela união aos municípios auditados pela Controladoria Geral da União

    Directory of Open Access Journals (Sweden)

    Lidiane Nazaré da Silva Dias

    2013-12-01

    Full Text Available Este estudo trata dos fatores associados aos desperdícios ativo (corrupção e passivo (ineficiência que ocorrem no processo de gestão pública, aqui focado nos gastos com saúde pública. Buscando chamar a atenção para a ocorrência do desperdício passivo, a pesquisa investigou a seguinte questão: quais fatores de desperdício ativo e passivo estão associados com as irregularidades na gestão dos recursos repassados pela União aos municípios brasileiros para a área de saúde no ano de 2010? As evidências empíricas foram obtidas nos relatórios de auditoria da Controladoria Geral da União (CGU elaborados no ano de 2010 referentes a 102 municípios fiscalizados. Para a identificação do desperdício ativo foram observadas 3 variáveis e para o desperdício passivo 17 variáveis. Os dados relativos às variáveis foram submetidos a uma análise fatorial para agrupá-los em fatores associados estatisticamente com as irregularidades na gestão dos recursos destinados à saúde pública dos municípios auditados. Os resultados da pesquisa não mostraram nível adequado de significância para o desperdício ativo, enquanto que, para o desperdício passivo, evidenciaram três fatores denominados: Fator 1 Inadequabilidade Administrativa (o qual agrupou as variáveis: não pagamento de tributos, não ocorrência de contrapartida e má administração; Fator 2 Fraca Fiscalização (o qual agrupou as variáveis: inexistência ou fraca atuação do conselho e licitação fracionamento; e Fator 3 Baixo nível de Compliance (o qual agrupou as variáveis: licitação irregular e irregularidade não relacionada ao Prefeito. A principal conclusão da pesquisa relaciona-se à identificação da necessidade da implantação de mecanismos de governança no setor público, os quais poderiam reduzir o desperdício ativo e passivo.

  4. Concept of self-employment

    OpenAIRE

    Startienė, Gražina; Remeikienė, Rita; Dumčiuvienė, Daiva

    2010-01-01

    The article deals with the theories that explain the growth of self-employment and help to determine the presumptions of the self-employment growth. Self-employment theories are classified to several groups, i.e. the economic and sociological-psychological as well as the “push” and “pull” theories. Economic theories of self-employment interpret financial motives of the person to pursue own business, while sociologicalpsychological theories of self-employment determine non-financial objectives...

  5. Growth, Employment and Structural Change

    DEFF Research Database (Denmark)

    Aggarwal, Aradhna

    2016-01-01

    This paper studies the decomposition of GSDP growth per capita in Punjab via-a-vis 15 other states in India during 1993–94 and 2011–12 in terms of employment and productivity growth. Specifically, it focuses on the role of employment growth and structural change in employment on economic growth...... but structural shifts have paid off well in terms of diversification of the economy and their contribution to labour productivity especially for manufacturing. Overall employment effect had been negative but this was essentially due to contraction in the labour force; the employment rate effect turned out...

  6. Contact interaction of the Bi12GeO20, Bi12SiO20, and Bi4Ge3O12 melts with noble metals

    Science.gov (United States)

    Denisov, V. M.; Podkopaev, O. I.; Denisova, L. T.; Kuchumova, O. V.; Istomin, S. A.; Pastukhov, E. A.

    2014-02-01

    The sessile drop method is used to study the contact interaction of Ag, Au, Pd, Pt, and Ir with the Bi2O3-GeO2 and Bi2O3-SiO2 melts. These melts spread over Ag and Pd and, in some cases, over Au and Pt at a rather high speed and form equilibrium contact angles on Ir.

  7. High-pressure studies of superconductivity in BiO0. 75F0. 25BiS2

    Indian Academy of Sciences (India)

    Home; Journals; Bulletin of Materials Science; Volume 40; Issue 6. High-pressure studies of superconductivity in BiO 0.75 F 0.25 BiS 2. ZEBA HAQUE GOHIL S THAKUR GANESAN KALAI SELVAN SONACHALAM ARUMUGAM L C GUPTA A K GANGULI. Volume 40 Issue 6 October 2017 pp 1121-1125 ...

  8. High-pressure studies of superconductivity in BiO0. 75F0. 25BiS2

    Indian Academy of Sciences (India)

    ). We have investigated the effect of pressure on magnetization measurements. Our studies suggest improved superconducting properties in polycrystalline samples of BiO 0.75 F 0.25 BiS 2 . The Tc in our sample is 5.3 K, at ambient pressure, ...

  9. A novel method for sampling the suspended sediment load in the tidal environment using bi-directional time-integrated mass-flux sediment (TIMS) samplers

    Science.gov (United States)

    Elliott, Emily A.; Monbureau, Elaine; Walters, Glenn W.; Elliott, Mark A.; McKee, Brent A.; Rodriguez, Antonio B.

    2017-12-01

    Identifying the source and abundance of sediment transported within tidal creeks is essential for studying the connectivity between coastal watersheds and estuaries. The fine-grained suspended sediment load (SSL) makes up a substantial portion of the total sediment load carried within an estuarine system and efficient sampling of the SSL is critical to our understanding of nutrient and contaminant transport, anthropogenic influence, and the effects of climate. Unfortunately, traditional methods of sampling the SSL, including instantaneous measurements and automatic samplers, can be labor intensive, expensive and often yield insufficient mass for comprehensive geochemical analysis. In estuaries this issue is even more pronounced due to bi-directional tidal flow. This study tests the efficacy of a time-integrated mass sediment sampler (TIMS) design, originally developed for uni-directional flow within the fluvial environment, modified in this work for implementation the tidal environment under bi-directional flow conditions. Our new TIMS design utilizes an 'L' shaped outflow tube to prevent backflow, and when deployed in mirrored pairs, each sampler collects sediment uniquely in one direction of tidal flow. Laboratory flume experiments using dye and particle image velocimetry (PIV) were used to characterize the flow within the sampler, specifically, to quantify the settling velocities and identify stagnation points. Further laboratory tests of sediment indicate that bidirectional TIMS capture up to 96% of incoming SSL across a range of flow velocities (0.3-0.6 m s-1). The modified TIMS design was tested in the field at two distinct sampling locations within the tidal zone. Single-time point suspended sediment samples were collected at high and low tide and compared to time-integrated suspended sediment samples collected by the bi-directional TIMS over the same four-day period. Particle-size composition from the bi-directional TIMS were representative of the array of

  10. Nano-Channels Early Formation Investigation on Stainless Steel 316Ti after Immersion in Molten Pb-Bi

    Directory of Open Access Journals (Sweden)

    Abu Khalid Rivai

    2017-04-01

    Full Text Available Pb-Bi (lead-bismuth eutectic-LBE is a coolant of one of main candidates for the future nuclear reactor in the world (Generation IV reactors i.e. LFR (Lead alloy-cooled Fast Reactor, and also a spallation target material for ADS (Accelerator Driven Transmutation System. However, the development of fuel cladding and structural materials in LBE environment, especially at high temperature, is a critical issue for the deployment of LFR and ADS. This is because of the corrosive characteristic of LBE to metals as constituent materials of fuel cladding and structural of the reactors. In this study, corrosion test of a high-chromium austenitic steel i.e. SS316Ti in liquid Pb-Bi at 550ºC has been carried out for about 300 hours. The characterization using SEM-EDS (Scanning Electron Microscope-Energy Dispersive X-ray Spectroscope showed that an iron oxide as the outer layer and a chromium oxide as the inner layer on the surface of the specimen were formed which protected the steel specimen from corrosion and dissolution attack of Pb-Bi. However, small amount of Pb-Bi could penetrate into the iron oxide layer through ultra-thin channels. Atomic Force Microscopy (AFM was employed to investigate the phenomena of the channels formation. The results of the nano-scale investigation showed clearly the formation of the channels.

  11. Tourism Development Strategy of Buntula’bi Balusu Sub-Village, North Toraja Regency Based on Tourist Perception

    Directory of Open Access Journals (Sweden)

    Vica Vanessa Sesaryo Timang

    2014-09-01

    Full Text Available Buntula’bi Balusu Sub-village located in North Toraja Regency. It is uniquely endowed with diverse cultural heritages, both physical (tangible and non-physical (intangible cultures, viable to attract domestic and/or international tourists. The objectives of this research were to identify Buntula’bi physical and non-physical characteristics, analyse the tourists’ perceptions towards Buntula’bi’s tourism objects performances, and formulate the appropriate direction of tourism development within the sub-village. The research employed descriptive and evaluative analytical methods through observations on primary data, questionnaires, documentation, and a set of literature reviews. An evaluative approach was used to measure tourists’ level of satisfaction towards the tourism objects performances. Tourism component variables were assessed using Importance Performance Analysis (IPA. Descriptively, the physical characteristics in the study site were in the form of ancestral buildings, which included tongkonan Kollo-Kollo, tongkonan Rantewai, togkonan Lingkasile, alang, banuabugi’, and also traditional buildings of kombongan, rantetendan, ranteissun, liangtondon, lokkotarra, and sawahadat. Meanwhile, the non-physical characteristics were identified as indigenous traditions in the forms of tribal cultures and ceremonies such as Aluk Todolo, Rambu Solo’ andRambuTuka’. The IPA result showed that the top priority for the tourism development strategy in Buntula’bi was to improve public facilities, optimize road conditions, and develop restaurants and accommodation, as well as souvenir shops in Buntula’bi Balusu Sub-Village.Keywords: Importance Performance Analysis, Tourism Development, Toraja

  12. Thermoelectric properties of Bi2Te3 base solid solutions in the Bi2Te3-InS system

    International Nuclear Information System (INIS)

    Safarov, M.G.; Rustamov, P.G.; Alidzhanov, M.A.

    1979-01-01

    The rich Bi 2 Te 3 part ot the Bi 2 Te 3 -InS constitutional diagram has been studied with a view to produce new Bi 2 Te 3 -based solid solutions and to establish the maximum solubility of InS in Bi 2 Te 3 . The methods of differential-thermal, X-ray phase and microstructural analysis have been used. The alloys microhardness, density and thermal electric properties have been measured. A large region of Bi 2 Te 3 -based restricted solid solutions has been detected; it reaches 14.0 mol.% InS at room temperature. Studied have been the thermoelectromotive forces, electric and thermal conductivity of the alloys, containing up to 5 mol.% InS in the 300-700 K temperature range

  13. Synthesis of chemically bonded BiOCl@Bi{sub 2}WO{sub 6} microspheres with exposed (0 2 0) Bi{sub 2}WO{sub 6} facets and their enhanced photocatalytic activities under visible light irradiation

    Energy Technology Data Exchange (ETDEWEB)

    Ma, Yongchao [Qingdao Agricultural University, Qingdao 266109 (China); Chen, Zhiwei [School of Life Sciences, Shandong University of Technology, Zibo 255049 (China); Qu, Dan [Qingdao Agricultural University, Qingdao 266109 (China); Shi, Jinsheng, E-mail: jsshiqn@aliyun.com [Qingdao Agricultural University, Qingdao 266109 (China)

    2016-01-15

    Graphical abstract: - Highlights: • BiOCl@Bi{sub 2}WO{sub 6} composites were prepared via a controlled anion exchange method. • The shell of composites was composed of Bi{sub 2}WO{sub 6} sheets with exposed (0 2 0) facets. • The BiOCl@Bi{sub 2}WO{sub 6} composites showed efficient photocatalytic activity. • A possible photocatalytic degradation mechanism is proposed. - Abstract: Bi{sub 2}WO{sub 6} photocatalysts has been extensively studied for its photocatalytic activity. However, few works have been conducted on hierarchical Bi{sub 2}WO{sub 6} composite photocatalysts with specifically exposed facets. In this work, we report a facile method to synthesize BiOCl@Bi{sub 2}WO{sub 6} hierarchical composite microspheres. Bi{sub 2}WO{sub 6} nanosheets with specifically exposed (0 2 0) facet were directly formed on the surface of BiOCl precursor microspheres via a controlled anion exchange route between BiOCl and Na{sub 2}WO{sub 4}. The visible-light photocatalytic activity of the BiOCl@Bi{sub 2}WO{sub 6} heterojunction with exposed (0 2 0) facets (denoted as BiOCl@Bi{sub 2}WO{sub 6}) was investigated by degradation of Rhodamine B (RhB) and ciprofloxacin (CIP) aqueous solution under visible light irradiation. The experimental results indicated that the BiOCl@Bi{sub 2}WO{sub 6} composite microsphere with intimate interfacial contacts exhibited improved efficiency for RhB photodegradation in comparison with pure BiOCl and Bi{sub 2}WO{sub 6}. The BiOCl@Bi{sub 2}WO{sub 6} composite microsphere also shows high photocatalytic activity for degradation of CIP under visible light irradiation. The enhanced photocatalytic performance of BiOCl@Bi{sub 2}WO{sub 6}-020 hierarchical microspheres can be ascribed to the improved visible light harvesting ability, high charge separation and transfer. This work will make significant contributions toward the exploration of novel heterostructures with high potential in photocatalytic applications.

  14. Synthesis and melting behaviour of Bi, Sn and Sn–Bi nanostructured alloy

    Energy Technology Data Exchange (ETDEWEB)

    Frongia, F.; Pilloni, M.; Scano, A.; Ardu, A.; Cannas, C.; Musinu, A. [Università di Cagliari, Dipartimento di Scienze Chimiche e Geologiche and Cagliari Research Unit of the National Consortium of Materials Science and Technology (INSTM), Cittadella Universitaria di Monserrato, 09042 Monserrato, CA (Italy); Borzone, G.; Delsante, S. [Department of Chemistry and Industrial Chemistry, Genoa University and Genoa Research Unit of the National Consortium of Materials Science and Technology (INSTM), Via Dodecaneso 31, I-16146 Genoa (Italy); Novakovic, R. [National Research Council (CNR), Institute for Energetics and Interphases (IENI), Via De Marini 6, 16149 Genoa (Italy); Ennas, G., E-mail: ennas@unica.it [Università di Cagliari, Dipartimento di Scienze Chimiche e Geologiche and Cagliari Research Unit of the National Consortium of Materials Science and Technology (INSTM), Cittadella Universitaria di Monserrato, 09042 Monserrato, CA (Italy)

    2015-02-25

    Highlights: • Aqueous solution route is used to produce Bi, Sn and Bi–Sn nanoparticles. • HRTEM revealed core–shell and Janus type structures of Bi–Sn nanoparticles. • Melting temperature depression of Bi and Bi–Sn nanoparticles were measured by DSC. • DSC data on Bi melting temperature depression agrees with theoretical values. - Abstract: Lead-free solders based on Bi–Sn bimetallic nanoclusters with eutectic composition (Bi{sub 43}Sn{sub 57}) were synthesized at low temperature by simultaneous reduction reaction from aqueous solution containing bismuth and tin chlorides, using potassium borohydride as a reducing agent. By the same processing route, pure bismuth and tin nanoparticles have also been prepared. Microstructure, morphology and composition of the samples were characterized by X-ray powder diffraction (XRD), transmission (TEM) and scanning electron microscopy (SEM). TEM images of Bi–Sn nanoparticles show average size ranging from 30 to 100 nm. Thermal behaviour of Bi–Sn nanopowders was studied by DSC (differential scanning calorimetry) and a melting temperature (135 °C) lower than that of the corresponding microcrystalline sample (139 °C) was observed. SEM micrographs of the thermally treated sample up to 400 °C show fine spherical grains in the micrometer range with finer powder particles on the surface. XRD powder diffraction analysis indicates the formation of bismuth and tin nanophases with an average particle size of 85 and 126 nm, respectively. The oxidation behaviour of the samples was also investigated. The results obtained have been analyzed in view of theoretical models describing the melting temperature depression of nanoparticles.

  15. Multi-Level Pre-Correlation RFI Flagging for Real-Time Implementation on UniBoard

    Science.gov (United States)

    Dumez-Viou, Cédric; Weber, Rodolphe; Ravier, Philippe

    2016-03-01

    Because of the denser active use of the spectrum, and because of radio telescopes higher sensitivity, radio frequency interference (RFI) mitigation has become a sensitive topic for current and future radio telescope designs. Even if quite sophisticated approaches have been proposed in the recent years, the majority of RFI mitigation operational procedures are based on post-correlation corrupted data flagging. Moreover, given the huge amount of data delivered by current and next generation radio telescopes, all these RFI detection procedures have to be at least automatic and, if possible, real-time. In this paper, the implementation of a real-time pre-correlation RFI detection and flagging procedure into generic high-performance computing platforms based on field programmable gate arrays (FPGA) is described, simulated and tested. One of these boards, UniBoard, developed under a Joint Research Activity in the RadioNet FP7 European programme is based on eight FPGAs interconnected by a high speed transceiver mesh. It provides up to 4 TMACs with ®Altera Stratix IV FPGA and 160 Gbps data rate for the input data stream. The proposed concept is to continuously monitor the data quality at different stages in the digital preprocessing pipeline between the antennas and the correlator, at the station level and the core level. In this way, the detectors are applied at stages where different time-frequency resolutions can be achieved and where the interference-to-noise ratio (INR) is maximum right before any dilution of RFI characteristics by subsequent channelizations or signal recombinations. The detection decisions could be linked to a RFI statistics database or could be attached to the data for later stage flagging. Considering the high in-out data rate in the pre-correlation stages, only real-time and go-through detectors (i.e. no iterative processing) can be implemented. In this paper, a real-time and adaptive detection scheme is described. An ongoing case study has been

  16. Potencial ganadero de Colombia para exportar cortes finos de carne de bovino a la Unión Europea

    Directory of Open Access Journals (Sweden)

    Michael López-Cepeda

    2012-07-01

    Full Text Available Factores globales como el crecimiento sostenidon poblacional, el aumento de la demanda mundial de alimentos –particularmente de carne de res– y las restricciones productivas, por la estacionalidad climática, en algunos países del cono sur, como Argentina, Uruguay y Paraguay, hacen prever el aumento de la oferta cárnica bovina de Colombia; sin embargo, esto no es suficiente para que Colombia sea aceptado por la Unión Europea (UE como proveedor internacional de carnes especializadas y de alto valor agregado. En la actualidad, es necesario adoptar medidas que busquen mejorar la competitividad, incrementar los estándares de consumo del mercado interno, promover sistemas productivos alternativos (silvopastoriles, mejorar y mantener el estatus sanitario, garantizar la calidad y consistencia de la oferta de ganados, aplicar prácticas que garanticen el bienestar animal, implementar adecuadamente la trazabilidad, y garantizar la inocuidad, para que finalmente el país obtenga la distinción internacional de productor de carnes limpias, biológicas, orgánicas y de alto valor agregado, mejorando así la rentabilidad del negocio cárnico nacional en cada uno de sus eslabones. Para lograr lo anterior, se busca entender, apropiar y aplicar alternativas comerciales para exportar carne de res a la UE, como la Cuota Hilton, un cupo de aproximadamente 60.250 toneladas de cortes finos de carne de res, con sus respectivas especificaciones, destinado a aquellos países con condiciones productivas y de transformación cárnica como Colombia. La investigación que aquí se presenta buscó diagnosticar la implementación de un modelo comercial para la exportación de cortes finos de carne bovina a la Unión Europea.

  17. Ions irradiation on bi-layer coatings

    Science.gov (United States)

    Tessarolo, Enrico; Corso, Alain Jody; Böttger, Roman; Martucci, Alessandro; Pelizzo, Maria G.

    2017-09-01

    Future space missions will operate in very harsh and extreme environments. Optical and electronics components need to be optimized and qualified in view of such operational challenges. This work focuses on the effect of low alpha particles irradiation on coatings. Low energy He+ (4 keV and 16 keV) ions have been considered in order to simulate in laboratory the irradiation of solar wind (slow and fast components) alpha particles. Mono- and proper bi-layers coatings have been investigated. The experimental tests have been carried out changing doses as well as fluxes during the irradiation sessions. Optical characterization in the UV-VIS spectral range and superficial morphological analysis have performed prior and after irradiation.

  18. Preparation and characterization of Bi-2223 tapes

    International Nuclear Information System (INIS)

    Hense, K.; Kirchmayr, H.; Kovac, P.; Lackner, R.; Mueller, M.; Pachla, W.; Pitel, J.; Polak, M.; Usak, P.

    2003-01-01

    In a concerted action between Austrian, Slovakian and Polish research institutes Bi-2223 tapes have been prepared and characterized by different physical methods. Metallographic studies by optical as well as electron microscopy, measurements of critical current (angle dependent) and losses have been performed. Properties of individual filaments extracted from multifilamentary tapes were also studied. Uniformity of local I C of these filaments were considerably lower than that of the whole tape. This indicates that improvement of filament homogeneity could improve the over all J C in tapes. The application of these tapes for optimized magnet coils will also be discussed. From these investigations a better understanding of the mechanisms, limiting the critical current could be achieved and more optimized preparation methods can be envisioned

  19. Desempenho de sistemas consorciados de cenoura e alface avaliados através de métodos uni e multivariados Biological performance of carrot and lettuce intercropping systems as assessed through uni- and multivariate methods

    Directory of Open Access Journals (Sweden)

    Francisco Bezerra Neto

    2007-12-01

    Full Text Available A análise de dados provenientes de experimentos de consorciação geralmente é mais complexa do que as advindas de experimentos em cultivo solteiro. Nesta situação, vários tipos de análises são recomendados, como análise univariada de variância do rendimento das culturas componentes separadamente; dos rendimentos combinados dos sistemas consorciados; da eficiência produtiva por modelos de análise de envoltória de dados (DEA ou de métodos de análise multivariada dos rendimentos das culturas associadas. Neste trabalho, o objetivo foi avaliar o desempenho biológico de sistemas consorciados de cenoura e alface crespa através de métodos uni e multivariados. Dois experimentos (um consorciado e outro solteiro foram conduzidos em blocos casualizados completos, com quatro repetições. O experimento consorciado foi conduzido em esquema fatorial 2 x 4 + 2, com os tratamentos provenientes da combinação de duas cultivares de cenoura (Alvorada e Brasília com quatro cultivares de alface crespas (Lucy Brown, Tainá, Laurel e Verônica e as duas cvs. de cenoura sem consorciação. Os tratamentos do experimento solteiro consistiram das quatros cvs. de alface testadas. As características avaliadas na alface e cenoura foram massa fresca da parte aérea e rendimento de raízes comerciais, respectivamente. Análises uni e multivariadas de variância foram realizadas nas características avaliadas tanto na alface como na cenoura em função dos fatores tratamentos testados. O método multivariado mostrou-se bastante informativo, em função da maior capacidade discriminante, além da descrição da superioridade relativa dos tratamentos por meio da técnica das variáveis canônicas. Os índices combinados de medida de eficiência dos sistemas consorciados tiveram comportamento similar na discriminação dos melhores sistemas de cultivo consorciados quando avaliados pelo método univariado. Na avaliação de todos os sistemas consorciados

  20. Condensation energy density in Bi-2212 superconductors

    International Nuclear Information System (INIS)

    Matsushita, Teruo; Kiuchi, Masaru; Haraguchi, Teruhisa; Imada, Takeki; Okamura, Kazunori; Okayasu, Satoru; Uchida, Satoshi; Shimoyama, Jun-ichi; Kishio, Kohji

    2006-01-01

    The relationship between the condensation energy density and the anisotropy parameter, γ a , has been derived for Bi-2212 superconductors in various anisotropic states by analysing the critical current density due to columnar defects introduced by heavy ion irradiation. The critical current density depended on the size of the defects, determined by the kind and irradiation energy of the ions. A significantly large critical current density of 17.0 MA cm -2 was obtained at 5 K and 0.1 T even for the defect density of a matching field of 1 T in a specimen irradiated with iodine ions. The dependence of the critical current density on the size of the defects agreed well with the prediction from the summation theory of pinning forces, and the condensation energy density could be obtained consistently from specimens irradiated with different ions. The condensation energy density obtained increased with decreasing γ a over the entire range of measurement temperature, and reached about 60% of the value for the most three-dimensional Y-123 observed by Civale et al at 5 K. This gives the reason for the very strong pinning in Bi-2212 superconductors at low temperatures. The thermodynamic critical field obtained decreased linearly with increasing temperature and extrapolated to zero at a certain characteristic temperature, T * , lower than the critical temperature, T c . T * , which seems to be associated with the superconductivity in the block layers, was highest for the optimally doped specimen. This shows that the superconductivity becomes more inhomogeneous as the doped state of a superconductor deviates from the optimum condition