WorldWideScience

Sample records for cen

  1. CENS - Annual Report 2002

    International Nuclear Information System (INIS)

    It is widely recognized that nuclear safety is one of the most important issues in the world. The process of transformation in the former communist countries of Central and Eastern Europe has created a delicate situation for nuclear regulators, often leaving them without necessary human and financial resources. Therefore, regulatory bodies from Central and Eastern European Countries (CEEC) welcomed the idea of the Center for Nuclear Safety in Central and Eastern Europe (CENS) - a non-profit organization that would help them to achieve independence and greater efficiency. After two years of preparation, the Center was founded in March 2002 in Bratislava. Funding for the project was provided by the Swiss Agency for Development and Cooperation (SDC), which saw the Center as a new approach to technical co-operation between regulatory bodies of East and West. The respective planning involved close collaboration between the Swiss Federal Nuclear Safety Inspectorate (HSK), IAEA, Gesellschaft fuer Anlagen- und Reaktorsicherheit mbH (GRS), and Nuclear Regulatory Authority of the Slovak Republic (UJD). The Center's main aims are to improve the independence, competence, and efficiency of nuclear regulatory bodies, and to improve safety in nuclear facilities, by providing a system of networking and international membership for regulators in CEEC and for technical support organizations from around Europe. In this Annual Report activities of the CENS in 2002 year are reported

  2. Novel Centromeric Loci of the Wine and Beer Yeast Dekkera bruxellensis CEN1 and CEN2.

    Science.gov (United States)

    Ishchuk, Olena P; Vojvoda Zeljko, Tanja; Schifferdecker, Anna J; Mebrahtu Wisén, Sofia; Hagström, Åsa K; Rozpędowska, Elżbieta; Rørdam Andersen, Mikael; Hellborg, Linda; Ling, Zhihao; Sibirny, Andrei A; Piškur, Jure

    2016-01-01

    The wine and beer yeast Dekkera bruxellensis thrives in environments that are harsh and limiting, especially in concentrations with low oxygen and high ethanol. Its different strains' chromosomes greatly vary in number (karyotype). This study isolates two novel centromeric loci (CEN1 and CEN2), which support both the yeast's autonomous replication and the stable maintenance of plasmids. In the sequenced genome of the D. bruxellensis strain CBS 2499, CEN1 and CEN2 are each present in one copy. They differ from the known "point" CEN elements, and their biological activity is retained within ~900-1300 bp DNA segments. CEN1 and CEN2 have features of both "point" and "regional" centromeres: They contain conserved DNA elements, ARSs, short repeats, one tRNA gene, and transposon-like elements within less than 1 kb. Our discovery of a miniature inverted-repeat transposable element (MITE) next to CEN2 is the first report of such transposons in yeast. The transformants carrying circular plasmids with cloned CEN1 and CEN2 undergo a phenotypic switch: They form fluffy colonies and produce three times more biofilm. The introduction of extra copies of CEN1 and CEN2 promotes both genome rearrangements and ploidy shifts, with these effects mediated by homologous recombination (between circular plasmid and genome centromere copy) or by chromosome breakage when integrated. Also, the proximity of the MITE-like transposon to CEN2 could translocate CEN2 within the genome or cause chromosomal breaks, so promoting genome dynamics. With extra copies of CEN1 and CEN2, the yeast's enhanced capacities to rearrange its genome and to change its gene expression could increase its abilities for exploiting new and demanding niches. PMID:27560164

  3. Stellar dynamics of CEN A

    Science.gov (United States)

    Wilkinson, A.; Sharples, R. M.; Fosbury, R. A. E.; Wallace, P. T.

    1986-01-01

    The first complete map of the stellar velocity field within 100 arcsec of the nucleus of the bright elliptical galaxy NGC 5128 (Cen A) has been compiled, and complementary long-slit spectra out to 400 arcsec along the optical major axis have been obtained. These data show that the ellipsoidal stellar component is rotating slowly (maximum line-of-sight velocity 40 km/s) approximately perpendicular to the dust lane about a projected axis lying in pa approximately 135 deg and in the opposite sense to that expected if the warp were due to the dust lying in stable orbits round a triaxial potential. The velocity field may be explained by either an effectively stationary oblate triaxial model where the radio jet lies along the major axis perpendicular to the dust lane, or by an effectively stationary prolate model where the jet is not constrained to be perpendicular to the dust lane, but in either case the present warped dust lane configuration must be transient. It is shown that the dust lane can significantly affect the steepness of the rotation curve, the skew of the velocity field, and the magnitude of the dispersion.

  4. HASPECT: HAdron SPEctroscopy CenTer

    International Nuclear Information System (INIS)

    The main motivations for hadron spectroscopy in general and in particular for hybrid meson spectroscopy will be reviewed. The HASPECT (HAdron SPEctroscopy CenTer) project will be presented and discussed.

  5. Characterisation of CenH3 nucleosomes

    OpenAIRE

    Miell, Matthew Daniel David

    2013-01-01

    As a centromere-specific protein complex in direct contact with the DNA, CenH3-containing nucleosomes are generally thought to act as the distinguishing epigenetic mark of active centromere location. Confusingly, seemingly disparate models have been proposed for the structure of CenH3 nucleosomes. The most widely supported model is an octameric structure that, like histone H3 nucleosomes, contains two subunits of each histone. Another more contentious, yet persistent model i...

  6. RAZMERJA CEN PROMETNIH STORITEV IN CEN KOMUNIKACIJSKIH STORITEV V IZBRANIH DRŽAVAH EVROPSKE UNIJE

    OpenAIRE

    Kralj, Urška

    2011-01-01

    Diplomsko delo predstavlja raziskavo ravni cen prometnih in komunikacijskih storitev v Sloveniji, Avstriji, Nemčiji, Italiji in na Madžarskem. Razdeljeno je na dva dela: V prvem delu smo analizirali gospodarska gibanja v opazovanih državah. Drugi del pa obsega razlago metod za izračun ravni cen prometnih in komunikacijskih storitev in njihovo medsebojno primerjavo in interpretacijo opravljenih izračunov. Za merjenje razvitost narodnega gospodarstva najpogosteje uporabljamo bruto domači proizv...

  7. Managing nuclear knowledge: a SCK-CEN concern

    International Nuclear Information System (INIS)

    The abstracts describes the activities at SCK-CEN concerning knowledge management. Preserving and enhancing SCK-CEN's institutional memory is becoming vital. Accordingly, specific initiatives have been taken concerning sustaining nuclear education and training and stimulating the preservation and the sharing of nuclear knowledge. The status in these areas in 2003 is summarised

  8. Russian-Swedish Maritime Rivalry in XVIII cen.

    Directory of Open Access Journals (Sweden)

    Sergey A. Kolotov

    2014-03-01

    Full Text Available The paper analyzes the military-technical aspect of Russian-Swedish confrontation of the XVIII cen. Given short chronology of hostilities and influence the characteristics of the ships on the results of campaigns.

  9. WISE Circumstellar Disks in the Young Sco-Cen Association

    CERN Document Server

    Rizzuto, Aaron C; Zucker, Daniel B

    2011-01-01

    We present an analysis of the WISE photometric data for 829 stars in the Sco-Cen OB2 association, using the latest high-mass membership probabilities. We detect infrared excesses associated with 135 BAF-type stars, 99 of which are secure Sco-Cen members. There is a clear increase in excess fraction with membership probability, which can be fitted linearly. We infer that 41+-5% of Sco-Cen OB2 BAF stars to have excesses, while the field star excess fraction is consistent with zero. This is the first time that the probability of non-membership has been used in the calculation of excess fractions for young stars. We do not observe any significant change in excess fraction between the three subgroups. Within our sample, we have observed that B-type association members have a significantly smaller excess fraction than A and F-type association members.

  10. Metal rich stars in omega Cen: preliminary FLAMES GTO results

    CERN Document Server

    Pancino, E

    2004-01-01

    I present preliminary results for a sample of ~700 red giants in omega Cen, observed during the Ital-FLAMES Consortium GTO time in May 2003, for the Bologna Project on omega Cen. Preliminary Fe and Ca abundances confirm previous results: while the metal-poor and intermediate populations show a normal halo alpha-enhancement of [alpha/Fe]=$+0.3, the most metal-rich stars show a significantly lower [alpha/Fe]=+0.1. If the metal-rich stars have evolved within the cluster in a process of self-enrichment, the only way to lower their alpha-enhancement would be SNe type Ia intervention.

  11. Superconducting quadrupoles for LHC : CERN/CEA-CEN Saclay Collaboration

    CERN Multimedia

    CEA Saclay and CERN Collaboration

    1994-01-01

    Agreement has been signed between CERN and CEA Saclay, concerning the construction of two prototypes of the LHC latest quadrupoles. CEA Saclay was interested with the study, the design, the construction and the testing of this magnet. The fabrication took place at the CEN Laboratory at Saclay in Paris.

  12. RAVNI DROBNOPRODAJNIH CEN ŽIVIL V SLOVENIJI IN AVSTRIJI

    OpenAIRE

    Plečko, Timotej

    2014-01-01

    V diplomskem delu smo z makroekonomskimi kazalniki primerjali gospodarstvi Sloveniji in Avstrije. Ti kažejo, da je slovensko gospodarstvo slabše razvito. Bruto domači proizvod na prebivalca v standardu kupne moči je v Sloveniji na precej nižji ravni v primerjavi z Avstrijo. Prav tako je na precej nižji ravni tudi povprečna mesečna neto plača. Splošna raven cen sovpada s trditvijo, da bolj razvito gospodarstvo, izkazuje tudi višjo splošno raven cen. Ta je bila v Sloveniji v letu 2013, za 16,7 ...

  13. SCK-CEN increases production of medical isotopes by half

    International Nuclear Information System (INIS)

    It is impossible to imagine the medical world today without radioisotopes, and due to rapid technological progress in nuclear medicine their use is still on the rise. An important role of research reactors is the production of molybdenum-99. Around the world this is done primarily by five nuclear research reactors, one of which is the BR2 reactor of SCK-CEN. As a result of checks and maintenance work on three other reactors, for a few years there has been a serious crisis in the availability of this medical isotope. In order to guarantee the worldwide supply of radioisotopes, SCK-CEN expanded its production of molybdenum-99 by 50 percent in 2010.

  14. Fusion Programme SCK-CEN - Annual Report 2010

    Energy Technology Data Exchange (ETDEWEB)

    Massaut, V.

    2010-10-15

    In 2010 SCK-CEN centred his activities in fusion Research and Development around four main poles: 1) the studies of the first wall of future DEMO facility and plasma wall interactions, using the recently refurbished plasmatron VISIONI; 2) the study of the radiation resistance of optical and specific diagnostic components and the development and prototyping of a Fiber Optics Current Sensor (FOCS) for measuring Tokamak plasma current for long plasma pulses and without embarked electronics: 3) the further study, by irradiation and mechanical testing but also by modelling, of the future structural material for a fusion plant, the RAFM Eurofer and the development and characterization of ODS-Eurofer; 4) specific fusion socio-economic studies on fusion, based on the specific developments carried out for fusion and radioactive waste management. SCK-CEN is also strongly involved in the Broader Approach agreement as Designated Institution for the Belgian State, having a coordinating and managing role for all Belgian activities in this agreement. The present report is structured following the work programme 2010 of the Association. Some former activities form the old-EFDA have been grouped with new ones in coherent and collaborative packages. Most activities of SCK-CEN are, and have always been, carried out under EFDA task agreements.

  15. Fusion Programme SCK-CEN - Annual Report 2010

    International Nuclear Information System (INIS)

    In 2010 SCK-CEN centred his activities in fusion Research and Development around four main poles: 1) the studies of the first wall of future DEMO facility and plasma wall interactions, using the recently refurbished plasmatron VISIONI; 2) the study of the radiation resistance of optical and specific diagnostic components and the development and prototyping of a Fiber Optics Current Sensor (FOCS) for measuring Tokamak plasma current for long plasma pulses and without embarked electronics: 3) the further study, by irradiation and mechanical testing but also by modelling, of the future structural material for a fusion plant, the RAFM Eurofer and the development and characterization of ODS-Eurofer; 4) specific fusion socio-economic studies on fusion, based on the specific developments carried out for fusion and radioactive waste management. SCK-CEN is also strongly involved in the Broader Approach agreement as Designated Institution for the Belgian State, having a coordinating and managing role for all Belgian activities in this agreement. The present report is structured following the work programme 2010 of the Association. Some former activities form the old-EFDA have been grouped with new ones in coherent and collaborative packages. Most activities of SCK-CEN are, and have always been, carried out under EFDA task agreements.

  16. Fusion Programme SCK-CEN - Annual report 2009

    Energy Technology Data Exchange (ETDEWEB)

    Massaut, V.

    2009-10-15

    This report summarizes the Research and Development work carried out at SCK-CEN on fusion technology in the year 2009. This covers mostly the work done under the EFDA agreement as well as the new developments carried out within the so-called Broader Approach of fusion such as - studies on structural and first wall materials for ITER and DEMO - studies and testing on the radiation resistance of instruments and componenets for the diagnostic and remote handling - development of irradiation devices and systems for the testing of fusion materials under representative environment.

  17. Fusion Programme SCK-CEN - Annual report 2009

    International Nuclear Information System (INIS)

    This report summarizes the Research and Development work carried out at SCK-CEN on fusion technology in the year 2009. This covers mostly the work done under the EFDA agreement as well as the new developments carried out within the so-called Broader Approach of fusion such as - studies on structural and first wall materials for ITER and DEMO - studies and testing on the radiation resistance of instruments and componenets for the diagnostic and remote handling - development of irradiation devices and systems for the testing of fusion materials under representative environment.

  18. Managing nuclear knowledge: A SCK-CEN Concern

    International Nuclear Information System (INIS)

    Full text: Managing knowledge can be seen as the processes governing the creation, the dissemination and the utilisation of knowledge. Any organisation and specially a research centre will need a continuously updated body of knowledge as a basis of its sustained existence. Since its very beginning, SCK-CEN has always been a knowledge-based organisation aiming to solve topical problems based on experiences in the field, model-oriented experiments and fundamental research. Preserving and enhancing our institutional memory has become vital for the SCK-CEN. We are therefore pursuing our efforts to stimulating preservation and sharing of Nuclear Knowledge. Our knowledge exists in different forms and formats ranging from dispersed pieces of technical or scientific information on different media to a complex reservoir of people with the required educational background, expertise and acquired insights to apply that knowledge safely and effectively. SCK-CEN decided in 2001 to tackle this strategic concern by adopting a practical knowledge management (KM) approach. Our programme started in 2002 is built on 'what already exists'. KM activities were identified all over our organisation - building databases, assembling nuclear and technical information, implementing QA procedures, conducting training, writing publications - so that every researcher or technical staff can lay claim to it. However, a coordinated approach to Knowledge Management requires an efficient re-use of the recorded knowledge and an effective transfer of the available knowledge. This approach ensures an added value to our research work and guarantees on the long term the preservation of our institutional memory. The objective of the KM programme is the continuous improvement of the information management coupled with the elicitation of tacit knowledge, the stimulation of collaboration and the knowledge transfer. KM also enhances the information objects by adding or linking related additional information and

  19. Doppler imaging of the helium-variable star a Cen

    OpenAIRE

    Bohlender, David A.; Rice, J. B.; P. Hechler

    2010-01-01

    The helium-peculiar star a Cen exhibits line profile variations of elements such as iron, nitrogen and oxygen in addition to its well-known extreme helium variability. New high S/N, high-resolution spectra are used to perform a quantitative measurement of the abundances of the star and determine the relation of the concentrations of the heavier elements on the surface of the star to the helium concentration and the magnetic field orientation. Doppler images have been created using programs de...

  20. Physical parameters of the Cen X-3 system

    International Nuclear Information System (INIS)

    Photographic spectra of Cen X-3 show that the primary star has a spectral type near 06.5 with weak, variable emission at wavelength 4640 and 4686. No orbital motion of the emission or absorption lines is detected; for the latter the upper limit is approximately + or -50 km/s. Analysis of the available data indicates that the primary is a factor of 2-3 less massive than expected from normal evolutionary models while the X-ray source has a solar mass near 1.5. (U.S.)

  1. The Hard X-ray Emission of Cen A

    CERN Document Server

    Beckmann, V; Lubinski, P; Soldi, S; Terrier, R

    2011-01-01

    The radio galaxy Cen A has been detected all the way up to the TeV energy range. This raises the question about the dominant emission mechanisms in the high-energy domain. Spectral analysis allows us to put constraints on the possible emission processes. Here we study the hard X-ray emission as measured by INTEGRAL in the 3-1000 keV energy range, in order to distinguish between a thermal and non-thermal inverse Compton process. The hard X-ray spectrum of Cen A shows a significant cut-off at energies Ec = 434 (+106 -73) keV with an underlying power law of photon index 1.73 +- 0.02. A more physical model of thermal Comptonisation (compPS) gives a plasma temperature of kT = 206+-62 keV within the optically thin corona with Compton parameter y = 0.42 (+0.09 -0.06). The reflection component is significant at the 1.9 sigma level with R = 0.12 (+0.09 -0.10), and a reflection strength R>0.3 can be excluded on a 3 sigma level. Time resolved spectral studies show that the flux, absorption, and spectral slope varied in ...

  2. Doppler imaging of the helium-variable star a Cen

    CERN Document Server

    Bohlender, David A; Hechler, P

    2010-01-01

    The helium-peculiar star a Cen exhibits line profile variations of elements such as iron, nitrogen and oxygen in addition to its well-known extreme helium variability. New high S/N, high-resolution spectra are used to perform a quantitative measurement of the abundances of the star and determine the relation of the concentrations of the heavier elements on the surface of the star to the helium concentration and the magnetic field orientation. Doppler images have been created using programs described in earlier papers by Rice and others. An alternative surface abundance mapping code has been used to model the helium line variations after our Doppler imaging of certain individual helium lines produced mediocre results. We confirm the long-known existence of helium-rich and helium-poor hemispheres on a Cen and we measure a difference of more than two orders of magnitude in helium abundance from one side of the star to the other. Helium is overabundant by a factor of about 5 over much of the helium-rich hemispher...

  3. MUSE discovers perpendicular arcs in Cen A inner filament

    CERN Document Server

    Hamer, Stephen; Combes, Francoise; Salomé, Quentin

    2014-01-01

    Evidence of AGN interaction with the intergalactic medium is observed in some galaxies and many cool core clusters. Radio-jets are suspected to dig large cavities into the surrounding gas. In most cases, very large optical filaments (several kpc) are also seen all around the central galaxy. The origin of these filaments is still not understood. Star forming regions are sometimes observed inside the filaments and are interpreted as evidence of positive feedback (AGN-triggered star formation). Cen A is a very nearby galaxy with huge optical filaments aligned with AGN radio-jet direction. Here, we search for line ratio variations along the filaments, kinematic evidence of shock-broadend line widths and large scale dynamical structures. We observe a 1'x1' region around the inner filament of Cen A with MUSE on the VLT during the Science Verification period. The brightest lines are the Halpha, [NII], [OIII] and [SII]. MUSE shows that the filaments are made of clumpy structures inside a more diffuse medium aligned w...

  4. A Bayesian approach to the modelling of alpha Cen A

    CERN Document Server

    Bazot, M; Christensen-Dalsgaard, J

    2012-01-01

    Determining the physical characteristics of a star is an inverse problem consisting in estimating the parameters of models for the stellar structure and evolution, knowing certain observable quantities. We use a Bayesian approach to solve this problem for alpha Cen A, which allows us to incorporate prior information on the parameters to be estimated, in order to better constrain the problem. Our strategy is based on the use of a Markov Chain Monte Carlo (MCMC) algorithm to estimate the posterior probability densities of the stellar parameters: mass, age, initial chemical composition,... We use the stellar evolutionary code ASTEC to model the star. To constrain this model both seismic and non-seismic observations were considered. Several different strategies were tested to fit these values, either using two or five free parameters in ASTEC. We are thus able to show evidence that MCMC methods become efficient with respect to more classical grid-based strategies when the number of parameters increases. The resul...

  5. A Bayesian approach to the modelling of α Cen A

    DEFF Research Database (Denmark)

    Bazot, M.; Bourguignon, S.; Christensen-Dalsgaard, J.

    2012-01-01

    prior information on the parameters to be estimated, in order to better constrain the problem. Our strategy is based on the use of a Markov chain Monte Carlo (MCMC) algorithm to estimate the posterior probability densities of the stellar parameters: mass, age, initial chemical composition, etc. We use...... the stellar evolutionary code astec to model the star. To constrain this model both seismic and non-seismic observations were considered. Several different strategies were tested to fit these values, using either two free parameters or five free parameters in astec. We are thus able to show evidence...... probability densities. We are also able to compute odds for the presence of a convective core in α Cen A. When using core-sensitive seismic observational constraints, these can rise above ∼40 per cent. The comparison of results to previous studies also indicates that these seismic constraints are of critical...

  6. SCK-CEN Academy shares expertise with the world. Decommissioning and Radioprotection in health care

    International Nuclear Information System (INIS)

    The Learning Centre at the Belgian Nuclear Research Centre SCK-CEN develops competencies of its staff, doctoral students, temporary workers and external employees. For this purpose, the Learning Centre organises a range of training courses specifically aimed at the expectations and needs of various target groups. The article contains an overview of activities of the SCK-CEN Academy.

  7. X-ray and UV correlation in the quiescent emission of Cen X-4, evidence of accretion and reprocessing

    NARCIS (Netherlands)

    F. Bernardini; E.M. Cackett; E.F. Brown; C. D'Angelo; N. Degenaar; J.M. Miller; M. Reynolds; R. Wijnands

    2013-01-01

    We conducted the first long-term (60 days), multiwavelength (optical, ultraviolet, and X-ray) simultaneous monitoring of Cen X-4 with daily Swift observations, with the goal of understanding variability in the low mass X-ray binary Cen X-4 during quiescence. We found Cen X-4 to be highly variable in

  8. Managing Nuclear Knowledge: a challenge for SCK-CEN

    International Nuclear Information System (INIS)

    All innovation in nuclear science and nuclear technology for either power or non-power applications relies on knowledge. Preserving and enhancing nuclear knowledge accumulated in the past has become a timely subject of strategic importance. In recent years, political, economical and societal trends urged the need for an efficient management of nuclear knowledge. Foremost, the Belgian government has decided to phase-out nuclear power plants. Privatisation and deregulation rules of the energy market in the European Union drives the nuclear industry to compete in the immediate and near term with other sources of electrical energy. This might result in a reduction of work force and budgets allocated to research and development. These two decisions have as a side effect that fewer young people are attracted by studying nuclear science and nuclear engineering, making the issue of the replacement of the aging nuclear workforce even worse. This changing environment requires therefore the pro-active retention and preservation of our comprehensive nuclear knowledge base and the sustainment of our nuclear education and training efforts. SCK-CEN's initiatives concerning preserving and sharing Nuclear Knowledge and sustaining nuclear education and training are discussed

  9. Characterization of CenC, an enzyme from Cellulomonas fimi with both endo- and exoglucanase activities.

    OpenAIRE

    Tomme, P; Kwan, E.; Gilkes, N R; Kilburn, D G; Warren, R A

    1996-01-01

    The cenC gene, encoding beta-1,4-glucanase C (CenC) from Cellulomonas fimi, was overexpressed in Escherichia coli with a tac-based expression vector. The resulting polypeptide, with an apparent molecular mass of 130 kDa, was purified from the cell extracts by affinity chromatography on cellulose followed by anion-exchange chromatography. N-terminal sequence analysis showed the enzyme to be properly processed. Mature CenC was optimally active at pH 5.0 and 45 degrees C. The enzyme was extremel...

  10. Heterochromatin Is Required for Normal Distribution of Neurospora crassa CenH3 ▿ †

    OpenAIRE

    Smith, Kristina M.; Phatale, Pallavi A.; Sullivan, Christopher M.; Pomraning, Kyle R.; Freitag, Michael

    2011-01-01

    Centromeres serve as platforms for the assembly of kinetochores and are essential for nuclear division. Here we identified Neurospora crassa centromeric DNA by chromatin immunoprecipitation followed by high-throughput sequencing (ChIP-seq) of DNA associated with tagged versions of the centromere foundation proteins CenH3 (CENP-A) and CEN-C (CENP-C) and the kinetochore protein CEN-T (CENP-T). On each chromosome we found an ∼150- to 300-kbp region of enrichment for all three proteins. These reg...

  11. Identification of Functionally Conserved Regions in the Structure of the Chaperone/CenH3/H4Complex

    OpenAIRE

    Hong, Jingjun; Feng, Hanqiao; Zhou, Zheng; Ghirlando, Rodolfo; Bai, Yawen

    2012-01-01

    In eukaryotes, a variant of conventional histone H3 termed CenH3 epigenetically marks the centromere. The conserved CenH3 chaperone specifically recognizes CenH3 and is required for CenH3 deposition at the centromere. Recently, the structures of the chaperone/CenH3/H4 complexes have been determined for H. sapiens (Hs) and the budding yeasts S. cerevisiae (Sc) and K. lactis (Kl). Surprisingly, the three structures are very different, leading to different proposed structural bases for chaperone...

  12. Properties of the Bacillus Cereus strain used in probiotic CenBiot Propriedades da cepa de Bacillus cereus utilizada no probiótico CenBiot

    OpenAIRE

    Carlos Gil-Turnes; Andrea Freitas dos Santos; Flávia Weykamp da Cruz; Alegani Vieira Monteiro

    1999-01-01

    Bacillus cereus CenBiot fulfilled the requirements to be used as probiotic. The spores showed D80 of 14 hs, inhibited Escherichia coli and Yersinia pseudotuberculosis after 24 hs in associative culture, were innocuous for suckling and adult mice and were not inhibited by antibiotics at low concentrations.Bacillus cereus CenBiot possui as características necessárias para ser utilizada como probiótico. Os esporos apresentaram D80 de 14 hs, inibiram Escherichia coli e Yersinia pseudotuberculosis...

  13. CenH3 evolution in diploids and polyploids of three angiosperm genera

    OpenAIRE

    Masonbrink, Rick E.; Gallagher, Joseph P.; Jareczek, Josef J; Renny-Byfield, Simon; Grover, Corrinne E.; Gong, Lei; Wendel, Jonathan F.

    2014-01-01

    Background Centromeric DNA sequences alone are neither necessary nor sufficient for centromere specification. The centromere specific histone, CenH3, evolves rapidly in many species, perhaps as a coevolutionary response to rapidly evolving centromeric DNA. To gain insight into CenH3 evolution, we characterized patterns of nucleotide and protein diversity among diploids and allopolyploids within three diverse angiosperm genera, Brassica, Oryza, and Gossypium (cotton), with a focus on evidence ...

  14. Methylation of CenH3 arginine 37 regulates kinetochore integrity and chromosome segregation

    OpenAIRE

    Samel, Anke; Cuomo, Alessandro; Bonaldi, Tiziana; Ehrenhofer-Murray, Ann E

    2012-01-01

    Centromeres of eukaryotic chromosomes mark the site for kinetochore formation and microtubule attachment and are essential for accurate chromosome segregation. Although centromere identity is defined by the presence of the histone H3 variant CenH3/centromere protein A (CENP-A), little is known about how epigenetic modifications on CenH3 might regulate kinetochore assembly and centromere function. Here we show that CENP-A from Saccharomyces cerevisiae, termed Cse4, is methylated on arginine 37...

  15. Education and Training possibilities at the Belgian Nuclear Research Centre SCK-CEN

    International Nuclear Information System (INIS)

    Thanks to its thorough experience in the field of peaceful applications of nuclear science and technology SCK-CEN has garnered a reputation as an outstanding centre of not only research, but also education and training (E and T). The E and T activities at SCK-CEN cover a. o. reactor physics, reactor operation, reactor engineering, radiation protection, decommissioning and waste management. Our courses are directed to the nuclear industry, the medical and the non-nuclear industry, national and international policy organizations, the academic world and the general public. E and T programs are also organized in cooperation with universities, technical universities, nuclear power plants and public and private health services. In addition, the SCK-CEN is involved in international E and T research networks and programs such as ENETRAP, EUTERP, EUNDETRAF, CETRAD, BNEN and ENEN. Next to courses, SCK-CEN also offers students the possibility to perform their research work at our laboratories. Final-year students and Ph.D. candidates can enter a programme defined by an SCK-CEN mentor, in close collaboration with a university promotor. Post-docs are mainly recruited in specialised research domains that reflect the priority programmes and R and D topics of our institute

  16. Optical evidence of 4f-band formation in CeN

    International Nuclear Information System (INIS)

    We report ab initio calculations of the ground state and optical properties of CeN, which show that the 4f electrons in CeN are itinerant and that the intra-atomic 4f-Coulomb interaction is largely screened. A coherent 4f band of width ∼2 eV is formed, from which an accurate description of the optical spectrum is obtained. The lattice parameter, linear specific heat coefficient, and magnetic susceptibility are also well reproduced. While CeN was previously classified to be a mixed valence compound, our results show that the more appropriate picture is that of a 4f-band material. copyright 1997 The American Physical Society

  17. Spectroscopic observations of the Be stars eta Cen, γ Cas and phi Per

    International Nuclear Information System (INIS)

    The main part of this paper is concerned with observations obtained using the Princeton ultraviolet telescope-spectrometer on the Copernicus satellite through the Princeton guest investigator programme. These observations provided high resolution ultraviolet spectra of the bright southern shell star eta Cen, which are now being analysed in detail. A short description of the new eta Cen spectra and a progress report on the data analysis are presented. In the second part of the paper the authors describe visible-region spectra of the northern Be stars γ Cas and phi Per obtained with a cross-dispersed echelle spectrograph on the 36-inch Yapp telescope at the Royal Greenwich Observatory. (Auth.)

  18. On the uncertain nature of the core of $\\boldsymbol{\\alpha}$ Cen A

    DEFF Research Database (Denmark)

    Bazot, M.; Christensen-Dalsgaard, J.; Gizon, L.;

    2016-01-01

    High-quality astrometric, spectroscopic, interferometric and, importantly, asteroseismic observations are available for $\\alpha$ Cen A, which is the closest binary star system to earth. Taking all these constraints into account, we study the internal structure of the star by means of theoretical...

  19. Management of experimental and exotic fuels at SCK/CEN, Mol, Belgium

    International Nuclear Information System (INIS)

    SCK/CEN owns two experimental reactors BR2 and BR3 which produced a large amount of experimental and exotic fuels during the last 35 years. The spent fuel inventories for each reactor are briefly discussed and the present storage conditions identified. The present plans for the management of the various types of fuels are presented. (author)

  20. Aerodynamic characteristics of nebulized terbutaline sulphate using the Next Generation Impactor (NGI) and CEN method.

    Science.gov (United States)

    Abdelrahim, Mohamed E; Chrystyn, Henry

    2009-03-01

    Characterization of the aerosolized dose emitted from a nebulized system can be determined using CEN (prEN13544-1) methodology and more recently with a Next Generation Impactor (NGI), but evaporative effects can influence the results. We have investigated these characteristics using different flows and cooling with the NGI and compared the results to the standard CEN method using two different nebulizer systems. The NGI was operated using flows of 15 and 30 L min(-1) at room (ROOM) temperature and immediately after cooling at 5 degrees C for 90 min (COLD). Two nebulizer systems, the Sidestream jet nebulizer (SIDE) and the Aeroneb Pro (AERO), were used to nebulize terbutaline sulphate respiratory solution. The CEN method was also used to provide the aerodynamic characteristics of the aerosolized dose from these two nebulizer systems. The mean (SD) mass median aerodynamic diameter (MMAD) using 15COLD, 15ROOM, 30COLD, 30ROOM, and CEN for AERO was 5.0(0.1), 4.1(0.3), 4.4(0.2), 2.0(0.3), and 3.0(1.1) microm, respectively, and 4.2(0.4), 2.6(0.4), 3.5(0.1), 1.7(0.1), and 3.2(0.3) microm for SIDE. The fine particle fraction (FPF), using the NGI, followed the expected trend associated with the corresponding MMAD values, ranging from 48.1 to 70.5% from AERO and 57.3 to 87.8% for SIDE. The mean FPF for AERO and SIDE using the CEN methodology was 72.5 and 63.6%. Overall there was a highly significant difference (p < 0.001) between the different operating conditions for the FPF and MMAD of both nebulizer systems. All methods revealed a significant difference between AERO and SIDE except CEN. Both nebulizer systems were prone to evaporation effects during in vitro testing. Cooling and using a slow flow minimizes evaporation effects with the NGI and should be adopted as the recommended compendial method. The CEN method provides different values to those of the NGI operating conditions and could not differentiate between the two nebulizers. PMID:19392586

  1. Structural basis for recognition of centromere histone variant CenH3 by the chaperone Scm3

    OpenAIRE

    Zhou, Zheng; Feng, Hanqiao; Zhou, Bing-Rui; Ghirlando, Rodolfo; Hu, Kaifeng; Zwolak, Adam; Miller Jenkins, Lisa M.; Xiao, Hua; Tjandra, Nico; Wu, Carl; Bai, Yawen

    2011-01-01

    The centromere is a unique chromosomal locus that ensures accurate segregation of chromosomes during cell division by directing the assembly of a multiprotein complex, the kinetochore1. The centromere is marked by a conserved variant of conventional histone H3 termed CenH3 or CENP-A2. A conserved motif of CenH3, the CATD, defined by loop 1 and helix 2 of the histone fold, is necessary and sufficient for specifying centromere functions of CenH33, 4. The structural basis of this specification i...

  2. The Histone Fold Domain of Cse4 Is Sufficient for CEN Targeting and Propagation of Active Centromeres in Budding Yeast

    OpenAIRE

    Morey, Lisa; Barnes, Kelly; Chen, Yinhuai; Fitzgerald-Hayes, Molly; Baker, Richard E.

    2004-01-01

    Centromere-specific H3-like proteins (CenH3s) are conserved across the eukaryotic kingdom and are required for packaging centromere DNA into a specialized chromatin structure required for kinetochore assembly. Cse4 is the CenH3 protein of the budding yeast Saccharomyces cerevisiae. Like all CenH3 proteins, Cse4 consists of a conserved histone fold domain (HFD) and a divergent N terminus (NT). The Cse4 NT contains an essential domain designated END (for essential N-terminal domain); deletion o...

  3. Dynamics of a novel centromeric histone variant CenH3 reveals the evolutionary ancestral timing of centromere biogenesis

    OpenAIRE

    Dubin, Manu; Fuchs, Jörg; Gräf, Ralph; Schubert, Ingo; Nellen, Wolfgang

    2010-01-01

    The centromeric histone H3 variant (CenH3) serves to target the kinetochore to the centromeres and thus ensures correct chromosome segregation during mitosis and meiosis. The Dictyostelium H3-like variant H3v1 was identified as the CenH3 ortholog. Dictyostelium CenH3 has an extended N-terminal domain with no similarity to any other known proteins and a histone fold domain at its C-terminus. Within the histone fold, α-helix 2 (α2) and an extended loop 1 (L1) have been shown to be required for ...

  4. On the uncertain nature of the core of $\\boldsymbol{\\alpha}$ Cen A

    CERN Document Server

    Bazot, M; Gizon, L; Benomar, O

    2016-01-01

    High-quality astrometric, spectroscopic, interferometric and, importantly, asteroseismic observations are available for $\\alpha$ Cen A, which is the closest binary star system to earth. Taking all these constraints into account, we study the internal structure of the star by means of theoretical modelling. Using the Aarhus STellar Evolution Code (ASTEC) and the tools of Computational Bayesian Statistics, in particular a Markov chain Monte Carlo algorithm, we perform statistical inferences for the physical characteristics of the star. We find that $\\alpha$ Cen A has a probability of approximately 40\\% of having a convective core. This probability drops to few percents if one considers reduced rates for the $^{14}$N(p,$\\gamma$)$^{15}$O reaction. These convective cores have fractional radii less than 8\\% when overshoot is neglected. Including overshooting also leads to the possibility of a convective core mostly sustained by the ppII chain energy output. We finally show that roughly 30\\% of the stellar models de...

  5. The SCK-CEN Barometer 2011 - Perception and attitudes towards nuclear technologies in the Belgian population

    International Nuclear Information System (INIS)

    The fourth edition of the SCK-CEN Barometer was established in May-June 2011. It continued the historical follow-up of topics such as risk perception and confidence in authorities, and addressed a number of issues in detail, among which: attitude towards nuclear technologies, confidence in the management of nuclear technologies, stakeholder participation, the accident at Fukushima and the management of high level radioactive waste. This report presents a general overview of the results.

  6. Cenários prospectivos para o comércio internacional de etanol em 2020

    Directory of Open Access Journals (Sweden)

    Antonio Thiago Benedete da Silva

    2013-12-01

    Full Text Available Há crescentes pressões para que sejam adotados hábitos sustentáveis pela sociedade, o que impacta diversos mercados, incluindo os de energia. Combustíveis fósseis são fontes finitas, não renováveis e responsáveis por emissões consideráveis de CO2 na atmosfera. Nesse contexto, o etanol é apontado com umas das alternativas mais viáveis de fornecimento de energia limpa e renovável. O Brasil possui liderança tecnológica no setor devido ao lançamento do Proálcool na década de 1970. Nos anos 2000, o País despontou novamente na produção do biocombustível, passando a enfrentar concorrência maior de players norte-americanos e da União Europeia. Para o futuro, podem ser apontadas diversas incertezas que o setor enfrentará, sendo a prospecção baseada em cenários uma forma de modelar tais incertezas e auxiliar o desenvolvimento de estratégias robustas para as empresas que pretendem investir no setor. O objetivo neste trabalho foi desenvolver quatro cenários para o comércio internacional de etanol em 2020 e discutir as implicações para as estratégias empresariais. Para tanto, foi utilizado o método de elaboração de cenários em uma abordagem exploratória e qualitativa. Os cenários apresentados no estudo podem ser utilizados por empresas e diferentes stakeholders para testar opções estratégicas e de investimentos no setor de etanol.

  7. Analýza odchylek obvyklých cen od cen stanovených dle vyhlášky u rodinných domů v praxi

    OpenAIRE

    Žaloudíková, Radka

    2014-01-01

    Diplomová práce se zaměřuje na oceňování RD v oblasti Krnova způsobem stanoveným vyhláškou a obvyklou cenou. Pomocí odchylek těchto dvou cen RD bude vytvořen matematický model pro zjednodušené stanovování obvyklých cen RD v dané oblasti.

  8. On the uncertain nature of the core of α Cen A

    Science.gov (United States)

    Bazot, M.; Christensen-Dalsgaard, J.; Gizon, L.; Benomar, O.

    2016-08-01

    High-quality astrometric, spectroscopic, interferometric and, importantly, asteroseismic observations are available for α Cen A, which is the closest binary star system to earth. Taking all these constraints into account, we study the internal structure of the star by means of theoretical modelling. Using the Aarhus STellar Evolution Code (ASTEC) and the tools of Computational Bayesian Statistics, in particular a Markov chain Monte Carlo algorithm, we perform statistical inferences for the physical characteristics of the star. We find that α Cen A has a probability of approximately 40 per cent of having a convective core. This probability drops to few per cent if one considers reduced rates for the 14N(p,γ)15O reaction. These convective cores have fractional radii less than 8 per cent when overshoot is neglected. Including overshooting also leads to the possibility of a convective core mostly sustained by the ppII chain energy output. We finally show that roughly 30 per cent of the stellar models describing α Cen A are in the subgiant regime.

  9. ISO and CEN standards for health informatics--synergy or competition.

    Science.gov (United States)

    Klein, Gunnar O

    2003-01-01

    The European standardisation of health informatics in CEN/TC 251 started in 1990 with the now twenty national standards bodies as members and a political mandate from the European Union and EFTA. The start of the international work in ISO/TC 215 has been welcomed by Europe and there is a lot of co-operation where European pre-standards have often been the basis for the start of international standards work, particularly in the area of medical device communication and for health cards. CEN and ISO also collaborate with other bodies in the field such as DICOM for imaging, IEEE for devices and the US based HL7 organisation for message development. It is important to find the right level of standards work for different aspects. The European CEN work will be maintained for issues like the electronic health record, some security aspects and medication related communication where there are common views and legislation makes European consensus necessary and achievable. The device market on the other hand requires global standards. In addition to multinational co-operation, it is important with a national strategy for the use of standards and adaptation and promotion of specific profiles to achieve interoperability in the still mainly national health systems. PMID:15061554

  10. The Central Gulf of Mexico Ocean Observing System (CenGOOS)

    Science.gov (United States)

    Howden, S. D.; Asper, V.; Lohrenz, S.; Roman, D.

    2005-05-01

    The University of Southern Mississippi has established a coastal ocean observing system in the north-central Gulf of Mexico, where there is a dearth of real-time oceanographic observations on the continental shelf. The development of the Central Gulf of Mexico Ocean Observing System (CenGOOS) follows overall guidelines for the Integrated Ocean Observing System as articulated by Ocean.US, and draft regional guidelines set forth by the Gulf of Mexico Coastal Ocean Observing System Regional Association (GCOOS-RA). The present system consists of a 3-m discus buoy measuring both meteorological and oceanographic parameters that are telemetered to the USM Department of Marine Science every three hours via Globalstar satellite communications. Data are served via a web site (www.cengoos.org). The near-term development of the system will include: Further integration with the coastal and near coastal observatories in the region Deployment of a two station, long range, high frequency radar system for mapping surface currents in the Mississippi Bight Deployment of additional instrumented moorings in the Mississippi Bight Development of a data assimilative nowcast/forecast numerical model of the region Regional database of high resolution multibeam and side-scan sonar data The initial plan for development of CenGOOS was formulated based on input solicited from identified stakeholders, regional priorities identified through opinion surveys conducted by the GCOOS-RA, and guidance from both Ocean.US and GCOOS-RA. An overview of our accomplishments, and vision for the future will be presented. This will include the hardware infrastructure, data management and communications plans and implementation, and other activities to integrate CenGOOS with the other observing systems in the Gulf of Mexico.

  11. IS WX CEN A POSSIBLE TYPE Ia SUPERNOVA PROGENITOR WITH WIND-DRIVEN MASS TRANSFER?

    International Nuclear Information System (INIS)

    WX Cen is one of a few compact binary supersoft X-ray sources (CBSS) in the Galaxy that is a possible Type Ia supernova (SN Ia) progenitor. The supersoft X-ray radiation is explained as hydrostatic nuclear burning on the surface of the white dwarf component that is accreting hydrogen from a stellar companion at a high rate. If the mass donor in this system has a low mass, as has been suggested in the literature, one would expect a high wind-driven mass transfer rate. In that case, the orbital period of the system should increase. To test this theoretical prediction, we have monitored the system photometrically since 2010. By using four newly determined eclipse timings together with those collected from the literature, we discovered that the orbital period is decreasing at a rate of dP/dt = –5.15 × 10–7 days yr–1. The long-term decrease in the orbital period is contrary to the prediction that the system is powered by wind-driven accretion. It therefore seems plausible that the mass donor could be more massive than the white dwarf, and that the mass transfer is driven by the thermal instability of the donor star. This finding suggests that WX Cen is a key object to check the physical mechanisms of mass accretion in CBSS. The corresponding timescale of the period change is about P/P-dot ∼ 0.81 x 106 yr, indicating that WX Cen may evolve into an SNe Ia within one million years in the Galaxy

  12. Introduction to Dr. ZHAO Guo-cen's Experience in Treating Chronic Atrophic Gastritis

    Institute of Scientific and Technical Information of China (English)

    ZHAO Yi; YU Yue-juan; XIAO Yuan-chun

    2005-01-01

    @@ ZHAO Guo-cen, a senior doctor born in 1937, is a member of China Association of Traditional Chinese Medicine and one of the 500 well-known supervisors qualified to instruct disciples. He was born into a Chinese medicine family and has been engaging himself in the treatment of digestive disorders. He is an expert at internal medicine and acupuncture. His main clinical experience is summarized as "Nourishing spleen and stomach to treat digestive disorders, nourishing spleen and kidneys to treat diabetes mellitus, supplementing heart-qi and activating stagnated blood to treat chest distress, and restoring kidney-qi and balancing yin and yang to treat infertility."

  13. Detection of the AM Her type cataclysmic variable V834 Cen at radio wavelengths

    International Nuclear Information System (INIS)

    The first detection is reported of the AM Her type cataclysmic variable system V834 Cen at 8.4 GHz, making it the second AM Her system to be detected at radio wavelengths. The radio emission is variable on time-scales as short as 1 min and reaches peak flux densities of 35 mJy. Longer time-scale variations of order of tens of minutes and levels of 12 mJy may be correlated with binary phase. The emission mechanism is probably an electron-cyclotron maser. (author)

  14. Cenário actual das energias renováveis em Portugal

    OpenAIRE

    Cunha, Daniela Sá

    2008-01-01

    O cenário actual das energias origem fósseis provou ser insustentável. A preocupação constante com o nosso planeta, o aumento constante do preço petróleo, assim como de outras fontes de energias poluentes, faz com que as energias renováveis sejam a solução mais vantajosa e rentável. Tendo em vista a procura insistente por soluções que salvaguardem o nosso planeta, é cada vez mais importante explorar os meios e matérias-primas existentes de maneira a retirar maior partido daq...

  15. Managing nuclear knowledge: A SCK-CEN concern: Status of a practical knowledge management approach

    International Nuclear Information System (INIS)

    Preserving and enhancing the institutional memory has become a strategic concern for SCK-CEN. Managing the Knowledge Capital is a long term journey, starting from a strategic commitment and integrating various operational projects. Since 2002, several pilot projects in different areas of expertise have been conducted to set up nuclear knowledge repositories and to sustain interactive research communities. Beyond the establishment of a corporate knowledge sharing culture, dedicated web-based portals based on both well established and emerging open source internet technologies ensure the long term persistence of data and the continuous capture of knowledge by providing on-line tools and related QA procedures. (author)

  16. Site characterisation program at the Belgian Nuclear Research Centre SCK-CEN

    International Nuclear Information System (INIS)

    Environmental restoration is of importance. In Belgium, there is primarily a need for restoring radioactively contaminated sites and the need for assessing the radiological impact of waste disposal or discharges. Participation in international programmes is necessary for keeping in touch with important developments. SCK-CEN has been performing site characterisation for more than twenty years within the framework of its statutory mission, but also within the framework of international programmes aiming to improve the safety of contaminated sites and the environment in general. The paper presents the most important activities which has been performed in the following fields during the period covered by the RCM. (author)

  17. The spotty donor star in the X-ray transient Cen X-4

    OpenAIRE

    Shahbaz, T; Watson, C A; Dhillon, V S

    2014-01-01

    We accurately determine the fundamental system parameters of the neutron-star X-ray transient Cen X-4 solely using phase-resolved high-resolution UVES spectroscopy. We first determine the radial-velocity curve of the secondary star and then model the shape of the phase-resolved absorption line profiles using an X-ray binary model. The model computes the exact rotationally broadened phase-resolved spectrum and does not depend on assumptions about the rotation profile, limb-darkening coefficien...

  18. Centromeres Off the Hook: Massive Changes in Centromere Size and Structure Following Duplication of CenH3 Gene in Fabeae Species

    OpenAIRE

    Neumann, Pavel; Pavlíková, Zuzana; Koblížková, Andrea; FUKOVÁ, Iva; Jedličková, Veronika; Novák, Petr; Macas, Jiří

    2015-01-01

    In most eukaryotes, centromere is determined by the presence of the centromere-specific histone variant CenH3. Two types of chromosome morphology are generally recognized with respect to centromere organization. Monocentric chromosomes possess a single CenH3-containing domain in primary constriction, whereas holocentric chromosomes lack the primary constriction and display dispersed distribution of CenH3. Recently, metapolycentric chromosomes have been reported in Pisum sativum, representing ...

  19. NGC 3628-UCD1: A possible $\\omega$ Cen Analog Embedded in a Stellar Stream

    CERN Document Server

    Jennings, Zachary G; Brodie, Jean P; Janz, Joachim; Norris, Mark A; Forbes, Duncan A; Martinez-Delgado, David; Fagioli, Martina; Penny, Samantha J

    2015-01-01

    Using Subaru/Suprime-Cam wide-field imaging and both Keck/ESI and LBT/MODS spectroscopy, we identify and characterize a compact star cluster, which we term NGC 3628-UCD1, embedded in a stellar stream around the spiral galaxy NGC 3628. The size and luminosity of UCD1 are similar to $\\omega$ Cen, the most luminous Milky Way globular cluster, which has long been suspected to be the stripped remnant of an accreted dwarf galaxy. The object has a magnitude of $i=19.3$ mag (${\\rm L}_{\\rm i}=1.4\\times10^{6}~{\\rm L}_{\\odot}$). UCD1 is marginally resolved in our ground-based imaging, with a half-light radius of $\\sim10$ pc. We measure an integrated brightness for the stellar stream of $i=13.1$ mag, with $(g-i)=1.0$. This would correspond to an accreted dwarf galaxy with an approximate luminosity of ${\\rm L}_i\\sim4.1\\times10^{8}~{\\rm L}_{\\odot}$. Spectral analysis reveals that UCD1 has an age of $6.6$ Gyr , $[\\rm{Z}/\\rm{H}]=-0.75$, an $[{\\alpha}/\\rm{Fe}]=-0.10$. We propose that UCD1 is an example of an $\\omega$ Cen-like...

  20. The study of triple systems V949 Cen, V358 Pup, and V1055 Sco

    CERN Document Server

    Zasche, P; Jurysek, J; Masek, M

    2015-01-01

    The systems V949 Cen, V358 Pup, and V1055 Sco are triples comprised of an eclipsing binary orbiting with a distant visual component on a much longer orbit. The first detailed photometric analysis of these interesting systems was performed using also the archival data from Hipparcos, ASAS, SuperWASP, OMC, and Pi Of The Sky surveys. The system V358~Pup was also analysed using the archival ESO spectra and the radial velocities were derived. The analyses of their light curves revealed the physical properties of the eclipsing components, while the interferometric data for these systems obtained during the last century show that the binaries are also weakly gravitationally bounded with the third components on much longer orbits. The photometry was carried out with the robotic telescope FRAM (part of the Pierre Auger Cosmic Ray Observatory), located in Argentina. The BVRI light curves were analysed with the PHOEBE program, yielding the basic physical parameters of the systems and their orbits. V949 Cen and V358 Pup ...

  1. High resolution spectroscopy of metal rich giants in omega Cen first indication of SNe Ia enrichment

    CERN Document Server

    Pancino, E; Hill, V; Ferraro, F R; Bellazzini, M

    2002-01-01

    We have obtained high-resolution, high S/N spectra for six red giants in omega Cen: three belonging to the recently discovered, metal-rich Red Giant Branch (RGB-a, Pancino et al. 2000) and three to the metal intermediate population (RGB-MInt). Accurate Iron, Copper and alpha-elements (Ca and Si) abundances have been derived and discussed. In particular, we have obtained the first direct abundance determination based on high-resolution spectroscopy for the RGB-a population, =-0.60+/-0.15. Although this value is lower than previous estimates based on Calcium triplet measurements, we confirm that this population is the most metal rich in omega Cen. In addition, we have found a significant difference in the alpha-elements enhancement of the two populations. The three RGB-MInt stars have the expected overabundance, typical of halo and globular clusters stars: =+0.29+/-0.01. The three RGB-a stars show, instead, a significantly lower alpha-enhancement: =+0.10+/-0.04. We have also detected an increasing trend of [Cu/...

  2. CENS as a network for knowledge dissemination and for expertise on energy, nuclear safety and security

    Energy Technology Data Exchange (ETDEWEB)

    Chakraborty, S.; Stoian, A. [Center for Nuclear Safety (CENS), Bratislava (Slovakia)

    2005-10-01

    This is a time when the whole of Europe faces energy and environmental transitions. CEE countries face in addition the challenge of implementing medium- to long-term energy reforms in order to comply with EU legislation and practices. Crucial to the proper managing of these common and fundamental concerns is the cooperation between developed and transforming countries. At a lower level this implies that problems specific to CEE countries, such as fragmentation and lack of performing resources, can be overcome through collaboration and knowledge transfer within a network of concerned and competent entities. As an organization aiming to support environmental protection by enhancing the safety and security of nuclear facilities in CEE countries, CENS is focused on being an independent forum and platform organization for the dissemination of scientific and technical knowledge and of expertise in the nuclear and energy-related communities. In seeking to achieve this objective, CENS has over the past two years provided a system of networking and international membership for nuclear regulators in CEE countries and for technical support organizations from around Europe. (orig.)

  3. Long-Baseline Interferometric Multiplicity Survey of the Sco-Cen OB Association

    CERN Document Server

    Rizzuto, A C; Robertson, J G; Kok, Y; Tuthill, P G; Warrington, B A; Haubois, X; Tango, W J; Norris, B; Brummelaar, T ten; Kraus, A L; Jacob, A; Laliberte-Houdeville, C

    2013-01-01

    We present the first multiplicity-dedicated long baseline optical interferometric survey of the Scorpius-Centaurus-Lupus-Crux association. We used the Sydney University Stellar Interferometer to undertake a survey for new companions to 58 Sco-Cen B- type stars and have detected 24 companions at separations ranging from 7-130mas, 14 of which are new detections. Furthermore, we use a Bayesian analysis and all available information in the literature to determine the multiplicity distribution of the 58 stars in our sample, showing that the companion frequency is F = 1.35 and the mass ratio distribution is best described as a power law with exponent equal to -0.46, agreeing with previous Sco-Cen high mass work and differing significantly from lower-mass stars in Tau-Aur. Based on our analysis, we estimate that among young B-type stars in moving groups, up to 23% are apparently single stars. This has strong implications for the understanding of high-mass star formation, which requires angular momentum dispersal thr...

  4. Radiation dosimetry with optically stimulated luminescent detectors at the SCK.CEN

    International Nuclear Information System (INIS)

    The Belgian Nuclear Research Centre, SCK.CEN, developed technologies for external dosimetry for more than fifty years. The thermoluminescence dosemeter (TLD) is now in routine application with more than 6000 read-outs every month. In 2002, the Centre also begun R and D investigations in the field of optically stimulated luminescence (OSL) dosimetry for personal, retrospective and space dosimetry. One of the purposes of this research is to extend the capabilities of the laboratory by taking profit of the different advantages of the OSLD's: wider dynamic range, sensitivity and reusability, low fading and ease of use. The Al2O3:C crystal is chosen as first material to study the OSL techniques. Recently developed modular devices for TL and OSL are described with their applications. After a short historical review of the dosimetry service and of the laboratory for external dosimetry, the OSL technique as used at the SCK.CEN will be described in the context of services and the research. (author)

  5. SCK-CEN 2006 barometer on risk perception of the Belgian population

    International Nuclear Information System (INIS)

    Starting with 2000, the expert group Society and Policy Support carries out research on various aspects of risk governance. Measuring several risk perception items at regular intervals with the Belgian population is an important part of this research. SCK-CEN has organised a first risk perception barometer in 2002 and a second one in 2006. The 2006 barometer is based on 1063 Computer Assisted Personal Interviews, with a duration of approximately 35 minutes. The large scale of the survey ensures that general trends can be detected and allows specific and detailed analysis on subgroups of the population. Besides the classical background variables used to obtain a sample representative for the Belgian 18+ population (age, language, habitat, gender and social class), several questions were included assessing the sociological context and the psychological personality profile. A series of questions on risk perception, confidence in authorities and specific nuclear topics were repeated in 2006 and constitute a fixed core, allowing comparison over time in Belgium, as well as with the results from the IRSN French barometer. In addition, a number of topics such as acceptance of legal norms and management options for radioactively contaminated milk, energy, nuclear waste and the perception of the Chernobyl accident were covered in detail in the 2006 edition of the SCK-CEN barometer

  6. Simulátor tepenného krvácení

    OpenAIRE

    Martincová, Kateřina

    2016-01-01

    Tématem semestrální práce je návrh simulátoru tepenného krvácení jako přípravku pro výuku první pomoci. Nejprve jsou představeny a popsány simulátory dostupné na trhu. Následuje rozbor jednotlivých komponent, které byly vybrány pro konstrukci simulátoru. Řídící jednotka, která spíná ventil, je realizována pomocí vývojové platformy Arduino. Vystřikování kapaliny umožňuje expanzní nádoba. Výsledkem této práce je návrh a testování dílčích částí prototypu simulátoru tepenného krvácení. The top...

  7. The RCB star V854 Cen is surrounded by a hot dusty shell

    CERN Document Server

    Chesneau, Olivier; De Marco, Orsola; Bright, S N; Spang, Alain; Lagadec, Eric; Mékarnia, Djamel; de Wit, W J

    2014-01-01

    Aims. The hydrogen-deficient supergiants known as R Coronae Borealis Stars might be the result of a double degenerate merger of two white dwarfs (WDs), or a final helium shell flash in a PN central star. In this context, any information on the geometry of their circumstellar environment and, in particular, the potential detection of elongated structures is of great importance. Methods. We obtained near-IR observations of \\object{V854\\,Cen} with the {{\\sc AMBER}} recombiner located at the Very Large Telescope Interferometer ({{\\sc VLTI}}) array with the compact array (B$\\leq$35m) in 2013 and the long array (B$\\leq$140m) in 2014. At each time, \\object{V854\\,Cen} was at maximum light. The H- and K-band continua were investigated by means of spectrally-dependant geometric models. These data are supplemented with mid-IR {{\\sc VISIR}}/VLT images. Results. A dusty slightly elongated over-density is discovered both in the H and K-band images. With the compact array, the central star is unresolved ($\\Theta\\leq2.5$\\,ma...

  8. TOP1 gene copy number and TOP1/CEN-20 ratio in stage III colorectal cancer samples

    DEFF Research Database (Denmark)

    Rømer, Maria Unni Koefoed; Nygård, Sune Boris; Christensen, Ib Jarle;

    fixed paraffin embedded (FFPE) primary tumor tissue has been suggested as a predictive biomarker of the effect of irinotecan in the treatment of metastatic CRC. Quantification of TOP1 protein levels in FFPE tissue may be difficult and calls for alternative methods.We have recently reported on TOP1 FISH......AIM OF STUDY To investigate if TOP1 gene copy number and/or the TOP1/CEN-20 ratio in colorectal cancer (CRC) areassociated with prognosis. BACKGROUND TOP1, localized on chromosome 20, encodes topoisomerase I (TOP1), which is the sole molecular target of irinotecan. TOP1 immunoreactivity in formalin...... gene copy number/cell and OS exists. A continuous relationship between TOP1 gene copy number/cell and LR exists. A continuous relationship exists between TOP1/CEN-20 ratio and LR CONCLUSION Our data suggest that TOP1 and TOP1/CEN-20 ratio are associated with prognosis in colorectal cancer. Future...

  9. Programme of integration of social aspects in nuclear research and technology development of SCK-CEN (PISA)

    International Nuclear Information System (INIS)

    The Belgian Nuclear Research Centre SCK-CEN started in 2000 the structured programme PISA with support of young researchers in social sciences from different disciplines and universities. These researchers joined technical teams within SCK-CEN. The research performed in the context of the PISA programme was organised in the following domains: (1) sustainability and nuclear development; (2) transgenerational ethics and group think in nuclear waste management; (3)legal aspects and liability and (4) risk management. The status and main achievements in 2003 are summarised

  10. HJURP Involvement in De Novo CenH3CENP-A and CENP-C Recruitment

    OpenAIRE

    Hiroaki Tachiwana; Sebastian Müller; Julia Blümer; Kerstin Klare; Andrea Musacchio; Geneviève Almouzni

    2015-01-01

    Although our understanding of centromere maintenance, marked by the histone H3 variant CenH3CENP-A in most eukaryotes, has progressed, the mechanism underlying the de novo formation of centromeres remains unclear. We used a synthetic system to dissect how CenH3CENP-A contributes to the accumulation of CENP-C and CENP-T, two key components that are necessary for the formation of functional kinetochores. We find that de novo CENP-T accumulation depends on CENP-C and that recruitment of these fa...

  11. The CentO satellite confers translational and rotational phasing on cenH3 nucleosomes in rice centromeres

    OpenAIRE

    Tao ZHANG; Talbert, Paul B; Zhang, Wenli; Wu, Yufeng; Yang, Zujun; Henikoff, Jorja G.; Henikoff, Steven; Jiang, Jiming

    2013-01-01

    Centromeres are sites on chromosomes that mediate attachment to microtubules for chromosome segregation and often comprise tandemly repeated “satellite” sequences. The function of these repeats is unclear because centromeres can be formed on single-copy DNA by the presence of nucleosomes containing a centromere-specific variant of histone H3 (cenH3). Rice has centromeres composed of both the 155-bp CentO satellite repeat and single-copy non-CentO sequences. This study shows that rice cenH3 nu...

  12. CenH3/CID Incorporation Is Not Dependent on the Chromatin Assembly Factor CHD1 in Drosophila

    OpenAIRE

    Podhraski, Valerie; Campo-Fernandez, Beatriz; Wörle, Hildegard; Piatti, Paolo; Niederegger, Harald; Böck, Günther; Fyodorov, Dmitry V.; Lusser, Alexandra

    2010-01-01

    CHD1 is a SNF2-related ATPase that is required for the genome-wide incorporation of variant histone H3.3 in the paternal pronucleus as well as in transcriptionally active nuclei in Drosophila embryos. The S. pombe and vertebrate orthologs of CHD1 have been implicated in the assembly of the centromeric histone H3 variant CenH3CENP-A, which occurs in a DNA replication-independent manner. Here, we examined whether CHD1 participates in the assembly of CenH3CID in Drosophila. In contrast to the fi...

  13. Parks Medical Flo-Lab 2100-SX may interpret IR emissions from CenTrak RTLS as user commands.

    Science.gov (United States)

    2010-09-01

    The Parks Medical Flo-Lab 2100-SX vascular laboratory system may react to infrared (IR) emissions from the CenTrak real-time locating system (RTLS) as if they were remote-control commands, causing the Flo-Lab to operate without user action. Parks Medical plans to offer a redesigned remote control to eliminate susceptibility of its product to IR interference. In addition, CenTrak has designed an assessment tool that will help identify devices that may be vulnerable to IR interference from its RTLS. PMID:21305940

  14. Milestones in the testing of surface disinfectants: from Robert Koch to CEN TC 216

    Directory of Open Access Journals (Sweden)

    Reybrouck, Gerald

    2007-09-01

    Full Text Available The first publication on testing disinfection procedures dates back to 1881 and was compiled by Robert Koch. Although his conclusions were erroneous, we continue to use the “germ carrier test” right up to the present day even if preference is now given to the suspension test first devised by Geppert. Over the years many conceptual milestones had to be reached, and much knowledge and many insights were needed to develop this procedure further to ensure reproducible results. Today, the disinfectant effect is calculated in terms of logarithmic reduction factors for the microbial count: a reduction of 5 log levels has been agreed, i.e. an inactivation kinetics of 99.999%. Of paramount importance was, in particular, the insight that different methods had to be employed to test disinfectants, while doing so not only in the laboratory but also under everyday working conditions. This gave rise to a situation whereby each country developed its own test methods, producing significantly different results. It was only in 1970 that the parties concerned came together so as to reach a uniform solution in Europe. The achievements of the “International Colloquium” were later adopted and continued by the European Standardization Committee (CEN in a special working group (TS 216. The most important accomplishment of this working group is, no doubt, the insight that it is not a test result but rather a test system that will reveal the truth. The tests carried out in Phase 1 are quantitative suspension tests to elucidate the bactericidal, virucidal, tuberculocidal, fungicidal and sporicidal efficacy. Phase 2 defines the requisite concentration per exposure time.CEN was founded and is sponsored by industry, since the latter needs reliable standards. Time will tell whether this was not perhaps the greatest milestone in the development of test methods. However, the successes scored by CEN are ultimately only the logical consequence of the accomplishments

  15. The 235U Prompt Fission Neutron Spectrum in the BR1 Reactor at SCK•CEN

    Science.gov (United States)

    Wagemans, Jan; Malambu, Edouard; Borms, Luc; Fiorito, Luca

    2016-02-01

    The BR1 research reactor at SCK•CEN has a spherical cavity in the graphite above the reactor core. In this cavity an accurately characterised Maxwellian thermal neutron field is present. Different converters can be loaded in the cavity in order to obtain other types of neutron (and gamma) irradiation fields. Inside the so-called MARK III converter a fast 235U(n,f) prompt fission neutron field can be obtained. With the support of MCNP calculations, irradiations in MARK III can be directly related to the pure 235U(n,f) prompt fission neutron spectrum. For this purpose MARK III spectrum averaged cross sections for the most relevant fluence dosimetry reactions have been determined. A calibration factor for absolute measurements has been determined applying activation dosimetry following ISO/IEC 17025 standards.

  16. Violência contra crianças no cenário brasileiro

    OpenAIRE

    Antonio Jakeulmo Nunes; Magda Coeli Vitorino Sales

    2016-01-01

    Resumo A violência é um fenômeno social e de saúde pública, com maior exacerbação quando acontece na infância, provocando um impacto no desenvolvimento e uma catastrófica repercussão no comportamento na vida adulta. O objetivo deste artigo é caracterizar por meio das evidências científicas a violência infantil no cenário brasileiro. Utilizou-se uma revisão integrativa da literatura, tendo como fonte de pesquisa as bases de dados Lilacs e SciELO no período de agosto de 2013. Dentre as publicaç...

  17. Dose received by the village of the Juragua CEN due to food consumption

    International Nuclear Information System (INIS)

    In this paper, the doses, due to food consumption, received by three villages placed around CEN Juragua (at present under construction) are calculated in the emplacement zone of the Nuclear Center (15 Km. around the facility). The selected villages have different food habits, so they receive different irradiation levels. The ingestion rate of food, the natural radionuclide concentrations existing in the environment (Cs-137, Sr-90, Ra-226, Th-232, Po-210 and Pb-210) and the dose conversion factors given by the International Commission on Radiological Protection (ICRP) were used in the assessment. More than 300 analysis carried out in a period of 6 years were compiled for the study. The doses received by people of Castillo del Jagua are analyzed in detail because they are high consumer of marine products. Groups of people receiving annual dose around 1 mSv, only by this kind of foods, were detected. (authors). 5 refs., 5 tabs

  18. Photo-disintegration of heavy nuclei at the core of Cen A

    International Nuclear Information System (INIS)

    Fermi LAT has detected gamma ray emissions from the core of Cen A. More recently, a new component in the gamma ray spectrum from the core has been reported in the energy range of 4 GeV to tens of GeV. We show that the new component and the HESS detected spectrum of gamma rays from the core at higher energy have possibly a common origin in photo-disintegration of heavy nuclei. Assuming the cosmic rays are mostly Fe nuclei inside the core and their spectrum has a low energy cut-off at 52 TeV in the wind frame moving with a Doppler factor 0.25 with respect to the observer on earth, the cosmic ray luminosity required to explain the observed gamma ray flux above 1 GeV is found to be 1.5 × 1043 erg/sec

  19. The 235U Prompt Fission Neutron Spectrum in the BR1 Reactor at SCK•CEN

    Directory of Open Access Journals (Sweden)

    Wagemans Jan

    2016-01-01

    Full Text Available The BR1 research reactor at SCK•CEN has a spherical cavity in the graphite above the reactor core. In this cavity an accurately characterised Maxwellian thermal neutron field is present. Different converters can be loaded in the cavity in order to obtain other types of neutron (and gamma irradiation fields. Inside the so-called MARK III converter a fast 235U(n,f prompt fission neutron field can be obtained. With the support of MCNP calculations, irradiations in MARK III can be directly related to the pure 235U(n,f prompt fission neutron spectrum. For this purpose MARK III spectrum averaged cross sections for the most relevant fluence dosimetry reactions have been determined. A calibration factor for absolute measurements has been determined applying activation dosimetry following ISO/IEC 17025 standards.

  20. Technology for site remediation: availability, needs and opportunities for R and D at SCK/CEN

    Energy Technology Data Exchange (ETDEWEB)

    Collard, G.

    1996-09-18

    Considerable experience has been gained over the past years in the use of control and treatment technologies, applied to contaminated sites and environments. Although available technologies are adequate in many cases, it is recognized that many technologies are too costly or inadequate to address the multitude of contaminant problems. This insight has led national and international organizations as well as private organizations and universities to sponsor environment technology programmes to address technology needs. The United States Department of Energy for example has initiated an aggressive environmental technology development programme and the Commission of the European Union is sponsoring environmental technology development. An overview is given of innovative and emerging technologies that may become important. Opportunities for SCK/CEN in research, development, and demonstration programmes are outlined.

  1. Control program of the neutron four-circle-diffractometer P32 at the SILOE reactor/CEN Grenoble

    International Nuclear Information System (INIS)

    The four-circle diffractometer P32 for elastic neutron scattering on single crystals was installed at the SILOE reactor/CEN Grenoble in 1981. The control program, presented here, is a new update of the former program versions used at the FR2 reactor/Kernforschungszentrum Karlsruhe. Important improvements concerning reliability and handling of the diffractometer are added. (orig.)

  2. HJURP involvement in de novo CenH3(CENP-A) and CENP-C recruitment.

    Science.gov (United States)

    Tachiwana, Hiroaki; Müller, Sebastian; Blümer, Julia; Klare, Kerstin; Musacchio, Andrea; Almouzni, Geneviève

    2015-04-01

    Although our understanding of centromere maintenance, marked by the histone H3 variant CenH3(CENP-A) in most eukaryotes, has progressed, the mechanism underlying the de novo formation of centromeres remains unclear. We used a synthetic system to dissect how CenH3(CENP-A) contributes to the accumulation of CENP-C and CENP-T, two key components that are necessary for the formation of functional kinetochores. We find that de novo CENP-T accumulation depends on CENP-C and that recruitment of these factors requires two domains in CenH3(CENP-A): the HJURP-binding region (CATD) and the CENP-C-binding region (CAC). Notably, HJURP interacts directly with CENP-C and is critical for de novo accumulation of CENP-C at synthetic centromeres. On the basis of our findings, we propose that HJURP serves a dual chaperone function in coordinating CenH3(CENP-A) and CENP-C recruitment. PMID:25843710

  3. Nuclear training in international perspective. SCK-CEN has a prominent presence in major European collaborative projects

    International Nuclear Information System (INIS)

    In all radioactivity applications, nuclear, but also in medicine for example, the knowledge and skills of the people is one of the main pillars. It should be possible to continue to develop their expertise for future generations. The European Union pursues an active policy in the field of nuclear education and training. SCK-CEN also participates in the same.

  4. Centromeres Off the Hook: Massive Changes in Centromere Size and Structure Following Duplication of CenH3 Gene in Fabeae Species.

    Science.gov (United States)

    Neumann, Pavel; Pavlíková, Zuzana; Koblížková, Andrea; Fuková, Iva; Jedličková, Veronika; Novák, Petr; Macas, Jiří

    2015-07-01

    In most eukaryotes, centromere is determined by the presence of the centromere-specific histone variant CenH3. Two types of chromosome morphology are generally recognized with respect to centromere organization. Monocentric chromosomes possess a single CenH3-containing domain in primary constriction, whereas holocentric chromosomes lack the primary constriction and display dispersed distribution of CenH3. Recently, metapolycentric chromosomes have been reported in Pisum sativum, representing an intermediate type of centromere organization characterized by multiple CenH3-containing domains distributed across large parts of chromosomes that still form a single constriction. In this work, we show that this type of centromere is also found in other Pisum and closely related Lathyrus species, whereas Vicia and Lens genera, which belong to the same legume tribe Fabeae, possess only monocentric chromosomes. We observed extensive variability in the size of primary constriction and the arrangement of CenH3 domains both between and within individual Pisum and Lathyrus species, with no obvious correlation to genome or chromosome size. Search for CenH3 gene sequences revealed two paralogous variants, CenH3-1 and CenH3-2, which originated from a duplication event in the common ancestor of Fabeae species. The CenH3-1 gene was subsequently lost or silenced in the lineage leading to Vicia and Lens, whereas both genes are retained in Pisum and Lathyrus. Both of these genes appear to have evolved under purifying selection and produce functional CenH3 proteins which are fully colocalized. The findings described here provide the first evidence for a highly dynamic centromere structure within a group of closely related species, challenging previous concepts of centromere evolution. PMID:25771197

  5. Cenários de desmatamento para a Amazônia

    Directory of Open Access Journals (Sweden)

    Britaldo Silveira Soares-Filho

    2005-08-01

    Full Text Available A AMAZÔNIA está entrando em uma era de rápidas mudanças impulsionadas pela previsão de asfaltamento de rodovias que estimularão a expansão da fronteira agrícola e de exploração madeireira. O declínio do custo de transporte tem importantes implicações para a biodiversidade, emissão de gases que contribuem para o efeito estufa e prosperidade da sociedade da Amazônia a longo prazo. Para analisar esse contexto, foi desenvolvido um modelo de simulação de desmatamento na bacia Amazônica, sensível a diferentes cenários de políticas públicas frente à expansão da infra-estrutura de transporte pela região. Resultados do modelo indicam que, dentro de um cenário pessimista, o desmatamento projetado pode eliminar, até meados deste século, 40% dos atuais 5,4 milhões de km² de florestas da Amazônia, liberando o equivalente a 32 Pg (10(9 toneladas de carbono para atmosfera. A modelagem de cenários alternativos aponta que a expansão de uma rede de áreas protegidas, efetivamente implementadas, poderia reduzir em até 1/3 as perdas florestais projetadas. Contudo, outras medidas de conservação são ainda necessárias para se manter a integridade funcional das paisagens e bacias hidrográficas amazônicas. Atuais experimentos em conservação florestal em propriedades privadas, mercados de serviços ambientais e zoneamento agro-ecológico devem ser refinados e multiplicados a fim de se buscar uma conservação extensiva.THE AMAZON is entering an era of rapid changes as new transportation corridors traverse the region, stimulating the expansion of logging and agricultural frontiers. The declining cost of transportation has important implications for biodiversity, greenhouse gas emissions, and the long-term prosperity of the Amazon society. To analyze this context, we have developed an empirically based, policy-sensitive model of deforestation for the Amazon basin. Model output for the worst-case scenario shows that, by 2050

  6. Study protocol: The registrar clinical encounters in training (ReCEnT study

    Directory of Open Access Journals (Sweden)

    Morgan Simon

    2012-06-01

    Full Text Available Abstract Background Patient encounters are the core learning activity of Australian general practice (family practice training. Exposure to patient demographics and presentations may vary from one general practice registrar (vocational trainee to another. This can affect comprehensiveness of training. Currently, there is no mechanism to systematically capture the content of GP registrar consultations. The aim of the Registrar Clinical Encounters in Training (ReCEnT study is to document longitudinally the nature and associations of consultation-based clinical and educational experiences of general practice registrars. Methods/design This is an ongoing prospective multi-site cohort study of general practice registrars’ consultations, entailing paper-based recording of consultation data. The study setting is general practices affiliated with three geographically-based Australian general practice regional training providers. Registrars record details of 60 consecutive consultations. Data collected includes registrar demographics, details of the consultation, patient demographics, reasons for encounter and problems managed. Problems managed are coded with the International Classification of Primary Care (second edition classification system. Additionally, registrars record educational factors related to the encounter. The study will follow the clinical exposure of each registrar six-monthly over the 18 months to two years (full-time equivalent of their general practice training program. Conclusions The study will provide data on a range of factors (patient, registrar and consultation factors. This data will be used to inform a range of educational decisions as well as being used to answer educational research questions. We plan to use ReCEnT as a formative assessment tool for registrars and help identify and address educational needs. The study will facilitate program evaluation by the participating training providers and thus improve articulation

  7. New Pre-main-Sequence Stars in the Upper Scorpius Subgroup of Sco-Cen

    CERN Document Server

    Rizzuto, A C; Kraus, A L

    2015-01-01

    We present 237 new spectroscopically confirmed pre-main-sequence K and M-type stars in the young Upper Scorpius subgroup of the Sco-Cen association, the near- est region of recent massive star formation. Using the Wide-Field Spectrograph at the Australian National University 2.3 m telescope at Siding Spring, we observed 397 kinematically and photometrically selected candidate members of Upper Scorpius, and identified new members by the presence of Lithium absorption. The HR-diagram of the new members shows a spread of ages, ranging from ~3-20 Myr, which broadly agrees with the current age estimates of ~5-10 Myr. We find a significant range of Li 6708 equivalent widths among the members, and a minor dependence of HR-diagram position on the measured equivalent width of the Li 6708A line, with members that appear younger having more Lithium. This could indicate the presence of either popu- lations of different age, or a spread of ages in Upper Scorpius. We also use Wide-Field Infrared Survey Explorer data to inf...

  8. On the kinematics of the neutron star low mass X-ray binary Cen X-4

    CERN Document Server

    Hern'andez, J I G; Penarrubia, J; Casares, J; Israelian, G

    2005-01-01

    We present the first determination of the proper motion of the neutron star low mass X-ray binary {Cen X-4} measured from relative astrometry of the secondary star using optical images at different epochs. We determine the Galactic space velocity components of the system and find them to be significantly different from the mean values that characterize the kinematics of stars belonging to the halo, and the thin and the thick disc of the Galaxy. The high metallicity of the secondary star of the system rules out a halo origin and indicates that the system probably originated in the Galactic disc. A statistical analysis of the galactocentric motion revealed that this binary moves in a highly eccentric ($e\\simeq 0.85\\pm0.1$) orbit with an inclination of $\\simeq 110^\\circ$ to the Galactic plane. The large Galactic space velocity components strongly support that a high natal kick as a result of a supernova explosion could have propelled the system into such an orbit from a birth place in the Galactic disc. The high...

  9. Description of a portable devices developed at SCK•CEN for OSL and TL dosimetry

    International Nuclear Information System (INIS)

    The Expert Group of Radiation Dosimetry and Calibration of the Belgian Nuclear Research Centre (SCK•CEN) uses thermoluminescence (TL) dosimetry for more than thirty years for routine measurements and for R and D purposes. In 2002, an experimental device based on the optically stimulated luminescence (OSL) was developed for research. It works with AL2O3:C detectors (TLD-500 and Luxel™) stimulated with a green line generated by a 150 mW Ar+ laser. Since 2008, modular OSL devices have been developed using light emitting diodes (LED) and working with reflection or transmission mode. This paper describes these modules. The characteristics of the different systems are compared on experimental results: detections limits, linearity, sensitivity. The modular device presents advantages in terms of measurement possibilities with respect to the laser device: a small number of modules allows the use of different detection materials (AL2O3:C, BeO, quartz, electronic components) and different measurement methods (TL, CW-OSL and pulsed OSL). The modules are controlled by a personal computer and a microcontroller array. The whole set is able to measure a wide range of doses by changing the number of LEDs and is able to work in situ. The future trends are commented as well as some applications.

  10. Finance management and administrative aspects of project management at SCK/CEN, Mol, Belgium

    International Nuclear Information System (INIS)

    In this contribution we have tried to point out the way in which the financial management of SCK/CEN is carried out. Despite the fact that research is still very often considered to be an area of activity in which decisions can only be made on the basis of intuition we believe that methods based on the principle of management by objectives and follow-up of expenditure and results, has enabled us to make our managerial staff and personnel ''resource-minded''. However, it should be stressed that in most cases, and contrary to private industry, the output of most R and D work cannot be measured or balanced in terms of cost and income. Cost accounting therefore only provides information on the input, whereas the output has to be evaluated in terms of long-term benefits to the nation. As these are rather diffucult to quantify, no clear balance can be shown and discussions may often arises as to the real output and the necessity to carry out R and D work. (author)

  11. The spotty donor star in the X-ray transient Cen X-4

    CERN Document Server

    Shahbaz, T; Dhillon, V S

    2014-01-01

    We accurately determine the fundamental system parameters of the neutron-star X-ray transient Cen X-4 solely using phase-resolved high-resolution UVES spectroscopy. We first determine the radial-velocity curve of the secondary star and then model the shape of the phase-resolved absorption line profiles using an X-ray binary model. The model computes the exact rotationally broadened phase-resolved spectrum and does not depend on assumptions about the rotation profile, limb-darkening coefficients and the effects of contamination from an accretion disk. We determine the secondary star-to-neutron star binary mass ratio to be 0.1755+/-0.0025, which is an order of magnitude more accurate than previous estimates. We also constrain the inclination angle to be 32 (+8; -2) degrees, Combining these values with the results of the radial velocity study gives a neutron star mass of 1.94 (+0.37; -0.85) Msun consistent with previous estimates. Finally, we perform the first Roche tomography reconstruction of the secondary sta...

  12. Using Beta Cen to Probe the Photosphere-Wind Connection to B Stars

    Science.gov (United States)

    MacFarlane, Joseph J.

    2005-01-01

    The goal of the project was to probe the connection between the photospheric pulsations and the X-ray production in the stellar winds of B stars. The B1 III star Beta Centauri is a Beta Cephei variable with a high X-ray count rate, and was observed by XMM. Analysis of XMM X-ray spectra showed characteristic plasma temperatures of 0.1, 0.2 and 0.6 keV. Analysis of He-like forbidden-to-intercombination lines was performed to determine the dominant locations of the X-ray emission. At Prism, work focused on developing and upgrading spectral models to calculate forbidden-to-intercombination line ratios using more detailed atomic models than the simple models typically used in the analysis of X-ray spectral lines, thereby allowing us to assess the effects of a broader variety of populating and depopulating channels for energy levels contributing to the observed X-ray line emission. Based on Ne IX lines, the source location was determined to be no farther than 4 stellar radii. Examination of the time variability of the XMM data for Beta Cen showed no significant correlation with the known optical pulsation period for the star, and also did not find any significant periods of variation at X-ray wavelengths.

  13. CenLP: A centrality-based label propagation algorithm for community detection in networks

    Science.gov (United States)

    Sun, Heli; Liu, Jiao; Huang, Jianbin; Wang, Guangtao; Yang, Zhou; Song, Qinbao; Jia, Xiaolin

    2015-10-01

    Community detection is an important work for discovering the structure and features of complex networks. Many existing methods are sensitive to critical user-dependent parameters or time-consuming in practice. In this paper, we propose a novel label propagation algorithm, called CenLP (Centrality-based Label Propagation). The algorithm introduces a new function to measure the centrality of nodes quantitatively without any user interaction by calculating the local density and the similarity with higher density neighbors for each node. Based on the centrality of nodes, we present a new label propagation algorithm with specific update order and node preference to uncover communities in large-scale networks automatically without imposing any prior restriction. Experiments on both real-world and synthetic networks manifest our algorithm retains the simplicity, effectiveness, and scalability of the original label propagation algorithm and becomes more robust and accurate. Extensive experiments demonstrate the superior performance of our algorithm over the baseline methods. Moreover, our detailed experimental evaluation on real-world networks indicates that our algorithm can effectively measure the centrality of nodes in social networks.

  14. Alterações climáticas: cenários socioeconómicos para a Ria de Aveiro

    OpenAIRE

    Alves, Teresa Margarida Gomes

    2013-01-01

    O presente trabalho de investigação visa estudar os impactes previstos pelo IPCC (Intergovernmental Panel on Climate Change) numa escala global, nos cenários socioeconómicos, aplicados à escala regional e local da Ria de Aveiro e da zona costeira envolvente. Os cenários a utilizar encontram-se disponíveis na base de dados do IPCC. Esta informação, juntamente com os dados ambientais e cenários também recolhidos por esta base de dados, foram importantes para caracterizar a vulnerabilidade e a c...

  15. State of the art report on the materials testing capabilities for IASCC susceptibility testing at SCK-CEN

    International Nuclear Information System (INIS)

    An overview of the current IASCC testing facilities at the Belgian Nuclear Research Centre SCK-CEN is given. The testing techniques are reviewed, and their capabilities as well as their limitations are discussed. Possible future developments in testing techniques are discussed. IASCC is caused by a complex interaction between materials, its environment and mechanical stresses. Characterisation techniques assessing mechanical stresses as well as electrochemical and microstructural characteristics are reported on

  16. State of the art report on the materials testing capabilities for IASCC susceptibility testing at SCK-CEN

    Energy Technology Data Exchange (ETDEWEB)

    Bosch, R.-W.; Boydens, P.; Vankeerbergen, R.; Van Nieuwenhove, R.; Van Dyck, S

    1999-08-01

    An overview of the current IASCC testing facilities at the Belgian Nuclear Research Centre SCK-CEN is given. The testing techniques are reviewed, and their capabilities as well as their limitations are discussed. Possible future developments in testing techniques are discussed. IASCC is caused by a complex interaction between materials, its environment and mechanical stresses. Characterisation techniques assessing mechanical stresses as well as electrochemical and microstructural characteristics are reported on.

  17. Compressibility and structural stability of CeN from experiment and theory. The B1-B2 transition

    Energy Technology Data Exchange (ETDEWEB)

    Olsen, J. Staun [Niels Bohr Institute, Oersted Laboratory, University of Copenhagen, Copenhagen (Denmark); Jorgensen, J.-E. [Department of Chemistry, Aarhus University, Aarhus (Denmark); Gerward, L., E-mail: gerward@fysik.dtu.dk [Department of Physics, Technical University of Denmark, Lyngby (Denmark); Vaitheeswaran, G. [Advanced Centre of Research in High Energy Materials, University of Hyderabad, Prof. C.R. Rao Road, Gachbowli, Hyderabad 500 046, Andhra Pradesh (India); Kanchana, V. [Department of Physics, Indian Institute of Technology Hyderabad, Ordnance Factory Estate, Yeddumailaram 502 205, Andhra Pradesh (India); Svane, A. [Department of Physics and Astronomy, Aarhus University, Aarhus (Denmark)

    2012-08-25

    Highlights: Black-Right-Pointing-Pointer First experimental determination of bulk modulus of CeN. Black-Right-Pointing-Pointer First observation of B1-B2 transformation in CeN. Black-Right-Pointing-Pointer Density functional calculations in remarkably good agreement with experiment. Black-Right-Pointing-Pointer Calculations extended to B2 phase, including B1-B2 transition. - Abstract: The high-pressure structural stability of CeN is investigated by experiment and theory. Experiments are carried out by energy-dispersive X-ray diffraction and synchrotron radiation, using a diamond anvil cell, to a maximum pressure of 77 GPa. The experimental results are in remarkably good agreement with ab initio calculations using the full-potential linear muffin-tin orbital method within the generalized gradient approximation (GGA). The experimental zero pressure bulk modulus is B{sub 0} = 156(3) GPa, the pressure derivative being constrained to B{sub 0} Prime = 4.00. The corresponding calculated data are B{sub 0} = 158.1 GPa and B{sub 0} Prime = 3.3. We report here the first experimental observation of the transformation of CeN from the ambient B1 type crystal structure to the B2 type. The onset of the transition is in the range 65-70 GPa, and the relative volume change at the transition is {Delta}V/V = -10.9(3)%. These data compare well with the calculated transition pressure P{sub tr} = 68 GPa and {Delta}V/V = -10.8%. Experimentally, the transition is found to be rather sluggish.

  18. Clearance of buildings and certification for reuse as non nuclear industrial building at SCK.CEN, Mol

    International Nuclear Information System (INIS)

    In the past, the SCK.CEN was involved in both nuclear and non-nuclear research programs. In the early nineties, the Belgian government decided to restrict the operational scope of the SCK.CEN to the strictly nuclear programs. A new research centre, the Vito (Flemish Institute for Technological Research) was founded and took over all non-nuclear activities. The Vito is housed in former SCK.CEN buildings. In addition to well-equipped non-nuclear laboratories and offices, these buildings contain laboratories and installations with a radiological history. The buildings have to be decontaminated and cleared for unrestricted reuse prior to transferring them to the Vito. This paper describes the process for decommissioning and clearance of some radiological laboratories for unrestricted reuse. Contamination levels were below 500 Bq/cm2 for beta gamma emitters and 0.5 Bq/cm2 for alpha emitters. Clearance limits were established as 0,4 Bq/cm2 surficial contamination for beta and gamma emitters and 0.04 Bq/cm2 for alpha emitters. Residual radioactivity should be of the same order of magnitude as that of a non-nuclear building on site. Methods used to demonstrate compliance with the limits were the radiological monitoring of the entire wall and floor surfaces, radiological analyses of the wash water from walls and floors, and measurement of selective core samples

  19. Phosphorylation and DNA Binding of HJURP Determine Its Centromeric Recruitment and Function in CenH3CENP-A Loading

    OpenAIRE

    Sebastian Müller; Rocio Montes de Oca; Nicolas Lacoste; Florent Dingli; Damarys Loew; Geneviève Almouzni

    2014-01-01

    Centromeres, epigenetically defined by the presence of the histone H3 variant CenH3, are essential for ensuring proper chromosome segregation. In mammals, centromeric CenH3CENP-A deposition requires its dedicated chaperone HJURP and occurs during telophase/early G1. We find that the cell-cycle-dependent recruitment of HJURP to centromeres depends on its timely phosphorylation controlled via cyclin-dependent kinases. A nonphosphorylatable HJURP mutant localizes prematurely to centromeres in S ...

  20. Light Echoes and the Progenitor of SN 2016adj in Cen A

    Science.gov (United States)

    Sugerman, Ben; Lawrence, Stephen

    2016-02-01

    The Type Ib/IIb supernova (SN) 2016adj is the fifth closest SN to be discovered during the lifetime of HST. This event offers us a rich variety of rare and unique opportunities, including: (1) identifying the progenitor; (2) mapping the three-dimensional structure and chemical composition of the progenitor's circumstellar and the host galaxy's interstellar environments; and (3) testing models of stellar mass loss and high-mass stellar evolution. The progenitor field of the SN has been observed from the near-UV to the mid-IR with HST and Spitzer, which will immediately allow us to accomplish the first science goal by identifying the progenitor (or establishing its upper limits) once new image with the SN present are taken with both observatories. Preliminary analyses of early-time spectra of SN 2016adj indicate its light is being extinguished by at least A(V)=2-4 magnitudes, meaning it is buried deep within the dust lane of Cen A. Echoes of the SN light off of this dust will allow us to produce high-resolution, three-dimensional maps of the structure and composition of the dust in and around the line-of-sight to the SN, which we will use to accomplish science goals (2)-(3) listed above. In particular, we will directly test the hypothesis that Type Ib/IIb SNe come not from very-high mass stars but from only moderately-massive stars that lost their envelopes to close binary companions. Please note that since echoes pass through a given point in space only once, data are permanently lost for each epoch that is not observed. While we will propose for continued observations in the Cycle 13 call for proposals, most of the science we propose cannot be achieved if the observations in this proposal are not taken before Cycle 13 begins.

  1. Using Beta Cen to Probe the Photosphere-wind Connection in B Stars

    Science.gov (United States)

    Miller, Nathan A.

    2005-01-01

    In this project we began by identifying the large number of emission lines visible in the XMM-Newton RGS spectra of Beta Cen. A comprehensive analysis of the temperature structure of the hot gas was carried out by simultaneously fitting the data from all the instruments on the spacecraft. This resulted in a measured temperature range of 0.1-0.6 keV. In more detailed analysis, three characteristic plasma temperatures were found: 0.1, 0.2, and 0.6 keV. The research carried out at UW-Eau Claire primarily focused on two aspects of the data: the analysis of the forbidden line to intercombination line ratio for He-like ions and the time variability of the overall X-ray flux as detected in the direct X-ray images of the star. The analysis of the lines from He-like ions indicate that the Ne IX lines are formed no farther than about 4 stellar radii from the star's photosphere, while the N VI lines are formed within 11 stellar radii of the photosphere. X-ray flux variability would be particularly interesting for this star because it is a known Beta Cep-type variable as seen in optical light: similar variation in the X-ray region would forge an interesting link between the two wavebands. Initial analysis of the X-ray flux was complicated by spikes in the count rates early in the observation. Detailed analysis of the spectral characteristics these count rate anomalies indicated that these flares were probably not intrinsic to the star, rather they were contaminations of the data due to the passage of the satellite through soft proton clouds in the Earth's magnetosphere. An analysis of the light curve of the uncontaminated portions of the light curve did not reveal any variation on the known optical period of variation for this star, and a general search for periodic variability also did not find any significant periods of variation.

  2. A Cooperação dos Países do Mercosul Frente o Cenário Internacional

    OpenAIRE

    Seixas, Carlos

    2008-01-01

    Este trabalho analisará sucintamente alguns aspectos importantes da cooperação existente entre os Estados integrantes do Mercosul, dando prioridade aos dois membros de maior valor Político e Estratégico, no caso Argentina e Brasil. Inicialmente será apresentada uma panorâmica do cenário internacional, após o que serão mostrados os aspectos da regionalização, para então chegar-se ao Mercosul propriamente dito. A questão fundamental apresentada é a seguinte: “é válido para os estados integra...

  3. Calculation of the yearly energy performance of heating systems based on the European Building Directive and related CEN Standards

    DEFF Research Database (Denmark)

    Olesen, Bjarne W.; Langkilde, Gunnar

    2009-01-01

    and cost-effectiveness. For new and existing buildings this requires a calculation of the energy performance of the building including heating, ventilation, cooling and lighting systems, based on primary energy. Each building must have an energy certificate and regular inspections of heating, cooling...... and ventilation systems must be performed. The present paper will present the method for calculating the energy performance for heating systems. The relevant CEN-standards are presented and a sample calculation of energy performance is made for a small family house in different geographical locations: Stockholm...

  4. Esperanto for histones: CENP-A, not CenH3, is the centromeric histone H3 variant

    OpenAIRE

    Earnshaw, W C; Allshire, R C; Black, B. E.; Bloom, K.; Brinkley, B. R.; Brown, W.; Cheeseman, I. M.; Choo, K.H.A.; Copenhaver, G. P.; DeLuca, J. G.; Desai, A.; Diekmann, S.; Erhardt, S; Fitzgerald-Hayes, M; Foltz, D.

    2013-01-01

    The first centromeric protein identified in any species was CENP-A, a divergent member of the histone H3 family that was recognised by autoantibodies from patients with scleroderma-spectrum disease. It has recently been suggested to rename this protein CenH3. Here, we argue that the original name should be maintained both because it is the basis of a long established nomenclature for centromere proteins and because it avoids confusion due to the presence of canonical histone H3 at centromeres.

  5. Local dark energy: HST evidence from the expansion flow around Cen A/M83 galaxy group

    CERN Document Server

    Chernin, A D; Makarov, D I; Kashibadze, O G; Teerikorpi, P; Valtonen, M J; Dolgachev, V P; Domozhilova, L M

    2007-01-01

    A structure with a massive group in its center and a cool expansion outflow outside is studied around the Cen A galaxy with the use of the Hubble Space Telescope observations. It is demonstrated that the dynamics of the flow is dominated by the antigravity of the dark energy background. The density of dark energy in the cell is estimated to be near the global cosmological density. This agrees with our previous result from the neighborhood of the Local group. A notion of the ``Hubble cell'' is introduced as a building block of the local structure of the universe.

  6. Local dark energy: HST evidence from the expansion flow around Cen A/M83 galaxy group

    OpenAIRE

    Chernin, A. D.; Karachentsev, I. D.; Makarov, D. I.; Kashibadze, O. G.; Teerikorpi, P.; Valtonen, M. J.; Dolgachev, V. P.; Domozhilova, L. M.

    2007-01-01

    A structure with a massive group in its center and a cool expansion outflow outside is studied around the Cen A galaxy with the use of the Hubble Space Telescope observations. It is demonstrated that the dynamics of the flow is dominated by the antigravity of the dark energy background. The density of dark energy in the cell is estimated to be near the global cosmological density. This agrees with our previous result from the neighborhood of the Local group. A notion of the ``Hubble cell'' is...

  7. Lattice dynamics and elastic properties of the 4f electron system: CeN

    DEFF Research Database (Denmark)

    Kanchana, V.; Vaitheeswaran, G.; Zhang, Xinxin;

    2011-01-01

    are hence allowed to hop from site to site, without an on-site Hubbard U, and contribute to the bonding, in a picture often referred to as itinerant. It is argued that this picture is appropriate for CeN at low temperatures, while the anomalous thermal expansion observed at elevated temperatures...... indicates entropy-driven localization of the Ce f electrons, similar to the behavior of elemental cerium. The elastic constants are predicted from the total energy variation of strained crystals and are found to be large, typical for nitrides. The phonon dispersions are calculated showing no soft modes, and...

  8. Phosphorylation and DNA Binding of HJURP Determine Its Centromeric Recruitment and Function in CenH3CENP-A Loading

    Directory of Open Access Journals (Sweden)

    Sebastian Müller

    2014-07-01

    Full Text Available Centromeres, epigenetically defined by the presence of the histone H3 variant CenH3, are essential for ensuring proper chromosome segregation. In mammals, centromeric CenH3CENP-A deposition requires its dedicated chaperone HJURP and occurs during telophase/early G1. We find that the cell-cycle-dependent recruitment of HJURP to centromeres depends on its timely phosphorylation controlled via cyclin-dependent kinases. A nonphosphorylatable HJURP mutant localizes prematurely to centromeres in S and G2 phase. This unregulated targeting causes a premature loading of CenH3CENP-A at centromeres, and cell-cycle delays ensue. Once recruited to centromeres, HJURP functions to promote CenH3CENP-A deposition by a mechanism involving a unique DNA-binding domain. With our findings, we propose a model wherein (1 the phosphorylation state of HJURP controls its centromeric recruitment in a cell-cycle-dependent manner, and (2 HJURP binding to DNA is a mechanistic determinant in CenH3CENP-A loading.

  9. Gamma TeV sky versus AUGER clustering: apart Cen A are UHECR mostly radioactive, heavy and galactic nuclei ?

    CERN Document Server

    Fargion, Daniele

    2012-01-01

    UHECR (Ultra High Cosmic Rays) made by He-like lightest nuclei might be solve main of the AUGER extragalactic clustering: He UHECR cannot arrive from Virgo because the light nuclei fragility and opacity above few Mpc; UHECR signals are clustering along Cen-A spreading as observed by horizontal galactic arms magnetic, along a vertical angles as observed clustered ones. As a consequence UHECR He, being fragile should partially fragment in secondaries at tens EeV multiplet (D,He3,p) almost as it occurs in the very recent UHECR multiplet at 20 EeV along Cen A UHECR clustering. However most remaining UHECR spread group seem to show mild correlations with other gamma (MeV-Al26) galactic sources within a wide angle. Moreover a rare UHECR clustering triplet is overlapping on Vela TeV anisotropy; other nearest galactic gamma sources may show links with UHECR. Therefore UHECR might be also heavy radioactive galactic nuclei as Ni56, Ni57 and Co57,Co60 widely bent from the sources whose radioactivity and decay in flight ...

  10. Compressibility and structural stability of CeN from experiment and theory. The B1–B2 transition

    DEFF Research Database (Denmark)

    Staun Olsen, J.; Jørgensen, J.-E.; Gerward, L.;

    2012-01-01

    The high-pressure structural stability of CeN is investigated by experiment and theory. Experiments are carried out by energy-dispersive X-ray diffraction and synchrotron radiation, using a diamond anvil cell, to a maximum pressure of 77GPa. The experimental results are in remarkably good agreement...... with ab initio calculations using the full-potential linear muffin-tin orbital method within the generalized gradient approximation (GGA). The experimental zero pressure bulk modulus is B0=156(3)GPa, the pressure derivative being constrained to B0′=4.00. The corresponding calculated data are B0=158.1GPa...... and B0′=3.3. We report here the first experimental observation of the transformation of CeN from the ambient B1 type crystal structure to the B2 type. The onset of the transition is in the range 65–70GPa, and the relative volume change at the transition is ΔV/V=−10.9(3)%. These data compare well...

  11. The Effect of Ce-N Codoping on the Electronic Structure and Optical Property of Anatase TiO2: a First-Principles Study

    Science.gov (United States)

    Mao, Fei; Hou, Qingyu; Zhao, Chunwang; Guo, Shaoqiang; Zhang, Yue

    2014-01-01

    Based on the first-principles plane wave ultra-soft pseudo potential (USP) method of density function theory pure N and Ce doped and Ce-N codoping anatase TiO2 supercell models were established, respectively, and calculated their energy in this paper. The calculated results show that the three doping systems compared to the pure anatase TiO2 band gap narrowed which results in red-shift of the optical absorption edges and Ce-N codoped anatase TiO2 have the most obvious visible effect. Meanwhile, synergy is very effective for the separation of electron-hole pairs and the electrons have a better lifespan. Research found that the trend of the donor's movements at the shallow level of Ce-N codoped anatase TiO2 is not obvious. This is due to its very thick shell, resulting in shielding effect of the outer layer of the Ce-4f.

  12. X-ray and UV correlation in the quiescent emission of Cen X-4, evidence of accretion and reprocessing

    Directory of Open Access Journals (Sweden)

    Bernardini F.

    2014-01-01

    Full Text Available We conducted the first long-term (60 days, multiwavelength (optical, ultraviolet, and X-ray simultaneous monitoring of Cen X-4 with daily Swift observations, with the goal of understanding variability in the low mass X-ray binary Cen X-4 during quiescence. We found Cen X-4 to be highly variable in all energy bands on timescales from days to months, with the strongest quiescent variability a factor of 22 drop in the X-ray count rate in only 4 days. The X-ray, UV and optical (V band emission are correlated on timescales down to less than 110 s. The shape of the correlation is a power law with index γ about 0.2–0.6. The X-ray spectrum is well fitted by a hydrogen NS atmosphere (kT = 59 − 80 eV and a power law (with spectral index Γ = 1.4 − 2.0, with the spectral shape remaining constant as the flux varies. Both components vary in tandem, with each responsible for about 50% of the total X-ray flux, implying that they are physically linked. We conclude that the X-rays are likely generated by matter accreting down to the NS surface. Moreover, based on the short timescale of the correlation, we also unambiguously demonstrate that the UV emission can not be due to either thermal emission from the stream impact point, or a standard optically thick, geometrically thin disc. The spectral energy distribution shows a small UV emitting region, too hot to arise from the accretion disk, that we identified as a hot spot on the companion star. Therefore, the UV emission is most likely produced by reprocessing from the companion star, indeed the vertical size of the disc is small and can only reprocess a marginal fraction of the X-ray emission. We also found the accretion disc in quiescence to likely be UV faint, with a minimal contribution to the whole UV flux.

  13. Cenários de tráfego em mesoescala : impacto nas emisões e consumos

    OpenAIRE

    Santos, André Lemos dos

    2013-01-01

    A presente dissertação apresenta uma avaliação do impacto da ocorrência de incidentes de tráfego a uma escala regional (Porto - Aveiro) ao nível energético e ambiental. Para tal, foram definidos vários cenários que avaliam diferentes graus de informação recebidos pelos condutores através de sistemas de informação de tráfego (ATIS - Advanced Traveller Information Systems) quando ocorre um incidente de tráfego numa determinada via. O impacto foi avaliado em quatro rotas distintas: uma urbana (N...

  14. Dynamic Toughness Testing of Pre-Cracked Charpy V-Notch Specimens. Convention ELECTRABEL - SCK-CEN

    International Nuclear Information System (INIS)

    This document describes the experimental and analytical procedures which have been adopted at the laboratories of the Belgian Nuclear Research Centre SCK-CEN for performing dynamic toughness tests on pre-cracked Charpy-V specimens. Such procedures were chosen on the basis of the existing literature on the subject, with several updates in the data analysis stages which reflect more recent developments in fracture toughness testing. Qualification tests have been carried out on PCCv specimens of JRQ steel, in order to assess the reliability of the results obtained; straightforward comparisons with reference data have been performed, as well as more advanced analyses using the Master Curve approach. Aspects related to machine compliance and dynamic tup calibration have also been addressed

  15. Assessment of the pelagic fish populations using CEN multi-mesh gillnets: consequences for the characterization of the fish communities

    Directory of Open Access Journals (Sweden)

    Deceliere-Vergès C.

    2009-01-01

    Full Text Available The contribution of CEN standard pelagic nets to the assessment of fish communities is tested by comparing three metrics (species composition, species abundance, and size structures measured in accordance with the standard (i.e. using benthic nets only to those calculated from the total effort (i.e. including pelagic nets. Hydroacoustic surveys were used simultaneously to assess fish densities in the pelagic habitat. The results show that in most cases the pelagic nets did not provide any extra information about these three metrics. However, their inclusion in the calculation of CPUE and size structures may affect the picture of the fish communities, especially in lakes containing salmonid populations. This study highlights the need to sample pelagic fish when assessing fish communities in order to determine lake quality.

  16. Assessment of the pelagic fish populations using CEN multi-mesh gillnets: consequences for the characterization of the fish communities

    Directory of Open Access Journals (Sweden)

    C. Deceliere-Vergès

    2008-01-01

    Full Text Available The contribution of CEN standard pelagic nets to the assessment of fish communities is tested by comparing three metrics (species composition, species abundance, and size structures measured in accordance with the standard (i.e. using benthic nets only to those calculated from the total effort (i.e. including pelagic nets. Hydroacoustic surveys were used simultaneously to assess fish densities in the pelagic habitat. The results show that in most cases the pelagic nets did not provide any extra information about these three metrics. However, their inclusion in the calculation of CPUE and size structures may affect the picture of the fish communities, especially in lakes containing salmonid populations. This study highlights the need to sample pelagic fish when assessing fish communities in order to determine lake quality.

  17. PRIMERJAVA MODELA VREDNOTENJA DOLGOROČNIH NALOŽB (CAPM) IN ARBITRAŽNE TEORIJE CEN (APT)

    OpenAIRE

    Miklič, Katja

    2011-01-01

    Spoznati želimo model vrednotenja dolgoročnih naložb (CAPM) in arbitražno teorijo cen naložb (APT). Oba modela želita ugotoviti, kakšne bodo pričakovane donosnosti v nekem portfelju. S CAPM-jem izračunavamo pričakovane donosnosti s pomočjo povprečja in variance, medtem ko so pri APT-ju pomembni faktorji. APT je neke vrste nadgradnja CAPM-ja. Raziskovalci, ki so modela primerjali (pri gozdarskih in kmetijskih naložbah) so ugotovili, da je APT model krepkejši, vendar pa tudi rezultatov CAPM-ja ...

  18. Current status and future plan of research and development program related to geological disposal at CEN-SCK

    International Nuclear Information System (INIS)

    The studies at CEN-SCK related to the R and D on geologic disposal are performed within the research unit 'waste and disposal' which also deals with the characterization of waste packages and their compatibility with the host clay. An overall view of the in situ test program developed from the underground research facility (URF) and a proposal for extension are given by figure. The main achievements until mid 1993 are summarized which include the in situ corrosion and leaching tests, the combined radiation/heating near field test CERBERUS, in situ migration experiments on radionuclides and the geotechnical survey on the gallery structures and their surrounding clay. Recently started actions are the hydrological modelling, the migration of gas in clay and the 'PRACLAY' demonstration test. Four main experiments conducted in the international context are briefly described: ARCHIMEDES, PHEBES, BACCHUS 2, and ATLAS. (T.H.)

  19. Centromeres Off the Hook: Massive Changes in Centromere Size and Structure Following Duplication of CenH3 Gene in Fabeae Species

    Czech Academy of Sciences Publication Activity Database

    Neumann, Pavel; Pavlíková, Zuzana; Koblížková, Andrea; Fuková, Iva; Jedličková, Veronika; Novák, Petr; Macas, Jiří

    2015-01-01

    Roč. 32, č. 7 (2015), s. 1862-1879. ISSN 0737-4038 R&D Projects: GA ČR(CZ) GAP501/11/1843; GA MŠk(CZ) LH11058 Institutional support: RVO:60077344 Keywords : Centromere * CenH3 * centromere drive * chromosome Subject RIV: EB - Genetics ; Molecular Biology Impact factor: 9.105, year: 2014

  20. Adaptation of methodology to select structural alternatives of one-way slab in residential building to the guidelines of the European Committee for Standardization (CEN/TC 350)

    International Nuclear Information System (INIS)

    The European Committee for Standardization (CEN) through its Technical Committee CEN/TC-350 is developing a series of standards for assessing the building sustainability, at both product and building levels. The practical application of the selection (decision making) of structural alternatives made by one-way slabs leads to an intermediate level between the product and the building. Thus the present study addresses this problem of decision making, following the CEN guidelines and incorporating relevant aspects of architectural design into residential construction. A life cycle assessment (LCA) is developed in order to obtain valid information for the decision making process (the LCA was developed applying CML methodology although Ecoindicator99 was used in order to facilitate the comparison of the values); this information (the carbon footprint values) is contrasted with other databases and with the information from the Environmental Product Declaration (EPD) of one of the lightening materials (expanded polystyrene), in order to validate the results. Solutions of different column disposition and geometries are evaluated in the three pillars of sustainable construction on residential construction: social, economic and environmental. The quantitative analysis of the variables used in this study enables and facilitates an objective comparison in the design stage by a responsible technician; the application of the proposed methodology reduces the possible solutions to be evaluated by the expert to 12.22% of the options in the case of low values of the column index and to 26.67% for the highest values. - Highlights: • Methodology for selection of structural alternatives in buildings with one-way slabs • Adapted to CEN guidelines (CEN/TC-350) for assessing the building sustainability • LCA is developed in order to obtain valid information for the decision making process. • Results validated comparing carbon footprint, databases and Env. Product Declarations

  1. Adaptation of methodology to select structural alternatives of one-way slab in residential building to the guidelines of the European Committee for Standardization (CEN/TC 350)

    Energy Technology Data Exchange (ETDEWEB)

    Fraile-Garcia, Esteban, E-mail: esteban.fraile@unirioja.es [University of La Rioja, Department of Mechanical Engineering (Spain); Ferreiro-Cabello, Javier, E-mail: javier.ferreiro@unirioja.es [University of La Rioja, Department of Mechanical Engineering (Spain); Qualiberica S.L. (Spain); Martinez-Camara, Eduardo, E-mail: eduardo.martinezc@unirioja.es [University of La Rioja, Department of Mechanical Engineering (Spain); Jimenez-Macias, Emilio, E-mail: emilio.jimenez@unirioja.es [University of La Rioja, Department of Electrical Engineering (Spain)

    2015-11-15

    The European Committee for Standardization (CEN) through its Technical Committee CEN/TC-350 is developing a series of standards for assessing the building sustainability, at both product and building levels. The practical application of the selection (decision making) of structural alternatives made by one-way slabs leads to an intermediate level between the product and the building. Thus the present study addresses this problem of decision making, following the CEN guidelines and incorporating relevant aspects of architectural design into residential construction. A life cycle assessment (LCA) is developed in order to obtain valid information for the decision making process (the LCA was developed applying CML methodology although Ecoindicator99 was used in order to facilitate the comparison of the values); this information (the carbon footprint values) is contrasted with other databases and with the information from the Environmental Product Declaration (EPD) of one of the lightening materials (expanded polystyrene), in order to validate the results. Solutions of different column disposition and geometries are evaluated in the three pillars of sustainable construction on residential construction: social, economic and environmental. The quantitative analysis of the variables used in this study enables and facilitates an objective comparison in the design stage by a responsible technician; the application of the proposed methodology reduces the possible solutions to be evaluated by the expert to 12.22% of the options in the case of low values of the column index and to 26.67% for the highest values. - Highlights: • Methodology for selection of structural alternatives in buildings with one-way slabs • Adapted to CEN guidelines (CEN/TC-350) for assessing the building sustainability • LCA is developed in order to obtain valid information for the decision making process. • Results validated comparing carbon footprint, databases and Env. Product Declarations

  2. Initiatives of the Belgian SCK•CEN Academy to attract young talent in nuclear research and technology

    International Nuclear Information System (INIS)

    Our aim: • Explain/refresh basics of radioactivity; • Discuss several examples of nuclear applications → In nuclear, medical, non-nuclear industry, daily life, … • Present research activities of SCK•CEN, justify why nuclear research is important, how does it contribute to well-being of society in general; • Discuss with teachers how the standard education programs can integrate a pluralistic approach to complex technical issues such as applications of radioactivity. Conclusions: • Focus on knowledge, understanding, skills, attitudes, … and show “real-life” situations = added value; • Mention the whole picture: → ALL application fields, ALL issues; • Motivate to choose for scientific or technical studies can be one aim, but equally (or more) important: discuss risks and benefits of nuclear applications in general, develop an open and critical mind in order to gain more insight in multi-facetted issues such as risks and benefits of radioactivity and nuclear technology, and contribute in serene way to the societal debate; • Contribution to critical-intellectual nuclear capacities for society

  3. First results of the deployment of a SoLid detector module at the SCK-CEN BR2 reactor

    CERN Document Server

    Ryder, Nick

    2015-01-01

    The SoLid experiment aims to resolve the reactor neutrino anomaly by searching for electron-to-sterile anti-neutrino oscillations. The search will be performed between 5.5 and 10 m from the highly enriched uranium core of the BR2 reactor at SCK-CEN. The experiment utilises a novel approach to anti-neutrino detection based on a highly segmented, composite scintillator detector design. High experimental sensitivity can be achieved using a combination of high neutron-gamma discrimination using 6 LiF:ZnS(Ag) and precise localisation of the inverse beta decay products. This compact detector system requires limited passive shielding as it relies on spacial topology to determine the different classes of backgrounds. The first full scale, 288 kg, detector module was deployed at the BR2 reactor in November 2014. A phased three tonne experimental deployment will begin in the second half of 2016, allowing a precise search for oscillations that will resolve the reactor anomaly using a three tonne detector running for thr...

  4. The subgiant branch of omega Cen seen through high-resolution spectroscopy. I. The first stellar generation in omega Centauri?

    CERN Document Server

    Pancino, E; Sbordone, L; Bellazzini, M; Pasquini, L; Monaco, L; Ferraro, F R

    2010-01-01

    We analysed high-resolution UVES spectra of six stars belonging to the subgiant branch of omega Centauri, and derived abundance ratios of 19 chemical elements (namely Al, Ba, C, Ca, Co, Cr, Cu, Fe, La, Mg, Mn, N, Na, Ni, Sc, Si, Sr, Ti, and Y). A comparison with previous abundance determinations for red giants provided remarkable agreement and allowed us to identify the sub-populations to which our targets belong. We found that three targets belong to a low-metallicity population at [Fe/H]~-2.0 dex, [alpha/Fe]~+0.4 dex and [s/Fe]~0 dex. Stars with similar characteristics were found in small amounts by past surveys of red giants. We discuss the possibility that they belong to a separate sub-population that we name VMP (very metal-poor, at most 5% of the total cluster population), which - in the self-enrichment hypothesis - is the best-candidate first stellar generation in omega Cen. Two of the remaining targets belong to the dominant metal-poor population (MP) at [Fe/H]~-1.7 dex, and the last one to the metal-...

  5. Pulsating hot O subdwarfs in Omega Cen: mapping a unique instability strip on the Extreme Horizontal Branch

    CERN Document Server

    Randall, S K; Fontaine, G; Monelli, M; Bono, G; Alonso, M L; Van Grootel, V; Brassard, P; Chayer, P; Catelan, M; Littlefair, S; Dhillon, V S; Marsh, T R

    2016-01-01

    We present an extensive survey for rapid pulsators among Extreme Horizontal Branch (EHB) stars in omega Cen. The observations performed consist of nearly 100 hours of time-series photometry, as well as low-resolution spectroscopy. We obtained photometry for some 300 EHB stars. Based on the spectroscopy, we derive reliable values of log g, Teff and log(N(He)/N(H)) for 38 targets, as well as estimates of the effective temperature for another nine targets. The survey uncovered a total of five rapid variables with multi-periodic oscillations between 85 and 125 s. Spectroscopically, they form a homogeneous group of hydrogen-rich subdwarf O stars clustered between 48,000 and 54,000 K. For each of the variables we are able to measure between two and three significant pulsations believed to constitute independent harmonic oscillations. In addition to the rapid variables, we found an EHB star with an apparently periodic luminosity variation of ~2700 s, which we tentatively suggest may be caused by ellipsoidal variatio...

  6. Overlapping Regulation of CenH3 Localization and Histone H3 Turnover by CAF-1 and HIR Proteins in Saccharomyces cerevisiae

    OpenAIRE

    Rosa, Jessica Lopes da; Holik, John; Green, Erin M.; Rando, Oliver J.; Kaufman, Paul D.

    2011-01-01

    Accurate chromosome segregation is dependent on the centromere-specific histone H3 isoform known generally as CenH3, or as Cse4 in budding yeast. Cytological experiments have shown that Cse4 appears at extracentromeric loci in yeast cells deficient for both the CAF-1 and HIR histone H3/H4 deposition complexes, consistent with increased nondisjunction in these double mutant cells. Here, we examined molecular aspects of this Cse4 mislocalization. Genome-scale chromatin immunoprecipitation analy...

  7. Cse4 (CenH3) Association with the Saccharomyces cerevisiae Plasmid Partitioning Locus in Its Native and Chromosomally Integrated States: Implications in Centromere Evolution▿ †

    OpenAIRE

    Huang, Chu-Chun; Hajra, Sujata; Ghosh, Santanu Kumar; Jayaram, Makkuni

    2010-01-01

    The histone H3 variant Cse4 specifies centromere identity in Saccharomyces cerevisiae by its incorporation into a special nucleosome positioned at CEN DNA and promotes the assembly of the kinetochore complex, which is required for faithful chromosome segregation. Our previous work showed that Cse4 is also associated with the partitioning locus STB of the 2μm circle—a multicopy plasmid that resides in the yeast nucleus and propagates itself stably. Cse4 is essential for the functional assembly...

  8. What impact does ionising radiation have on humans and the environment? Use of SCK-CEN biosphere models in international studies

    International Nuclear Information System (INIS)

    Certain nuclear activities may have an impact on man and the environment. To understand the precise magnitude of the effect, one must first understand the distribution and behaviour of radioactive substances in the environment. This knowledge is also necessary in order to take appropriate measures to reduce radiation exposure. analysing the environmental effects of MYRRHA and of waste disposal facilities are just some of the applications of SCK-CEN biosphere impact studies.

  9. High cell density culture with S. cerevisiae CEN.PK113-5D for IL-1β production: optimization, modeling, and physiological aspects.

    Science.gov (United States)

    Landi, Carmine; Paciello, Lucia; de Alteriis, Elisabetta; Brambilla, Luca; Parascandola, Palma

    2015-02-01

    Saccharomyces cerevisiae CEN.PK113-5D, a strain auxotrophic for uracil belonging to the CEN.PK family of the yeast S. cerevisiae, was cultured in aerated fed-batch reactor as such and once transformed to express human interleukin-1β (IL-1β), aiming at obtaining high cell densities and optimizing IL-1β production. Three different exponentially increasing glucose feeding profiles were tested, all of them "in theory" promoting respiratory metabolism to obtain high biomass/product yield. A non-structured non-segregated model was developed to describe the performance of S. cerevisiae CEN.PK113-5D during the fed-batch process and, in particular, its capability to metabolize simultaneously glucose and ethanol which derived from the precedent batch growth. Our study showed that the proliferative capacity of the yeast population declined along the fed-batch run, as shown by the exponentially decreasing specific growth rates on glucose. Further, a shift towards fermentative metabolism occurred. This shift took place earlier the higher was the feed rate and was more pronounced in the case of the recombinant strain. Determination of some physiological markers (acetate production, intracellular ROS accumulation, catalase activity and cell viability) showed that neither poor oxygenation nor oxidative stress was responsible for the decreased specific growth rate, nor for the shift to fermentative metabolism. PMID:25106469

  10. Movimentos Globais e Cenários em Turismo: uma realidade dinâmica, uma viagem ao futuro

    Directory of Open Access Journals (Sweden)

    Luiz Gonzaga Godoi Trigo

    2012-12-01

    Full Text Available Resumo Neste artigo se analisa o contexto contemporâneo global configurado pelas recentes crises e se prospectam cenários que exploram as possibilidades oferecidas pelos novos parâmetros de competitividade, com ênfase nos imperativos da inovação, em mudanças que marcaram o mundo nas últimas décadas e fatos que põem em cheque estruturas e processos historicamente constituídos. O setor de turismo e viagens sofre os impactos de toda sorte de transformações e tenta se adaptar às novas configurações sócio-culturais e de possibilidades facilitadas pelas novas tecnologias da informação, que, por sua vez, configuram novos segmentos, novos mercados e novos produtos. Entender a dinâmica, extensão e intensidade dessas mudanças é fundamental na análise atual e prospectiva, imprescindível para orientar decisões estratégicas em turismo. Palavras-chave: turismo; mudanças; cenários; inovação. Abstract This article analyzes the contemporary global context set by recent crises and prospectam scenarios that explore the possibilities offered by new parameters of competitiveness, with emphasis on the imperatives of innovation, changes that marked the world in recent decades and facts that put in check structures and processes historically made. The travel and tourism sector suffers the impacts of all sorts of transformations and tries to adapt to the new socio-cultural settings and possibilities facilitated by new information technologies, which, in turn, configure new s¬egments, new markets and new products. Understand the dynamics, extent and intensity of these changes is critical in analyzing current and prospective, necessary to guide strategic decisions on tourism. Keywords: tourism; changes; scenarios; innovation. Resumen En este artículo se analisa el contexto contemporáneo mundial establecido por las crisis recientes y se prospectam las posibilidades que ofrece nuevos parámetros de competitividad, con énfasis en

  11. A Conserved Arginine-Rich Motif within the Hypervariable N-Domain of Drosophila Centromeric Histone H3 (CenH3CID) Mediates BubR1 Recruitment

    OpenAIRE

    Torras-Llort, Mònica; Medina-Giró, Sònia; Moreno-Moreno, Olga; Azorín, Ferran

    2010-01-01

    [Background]: Centromere identity is determined epigenetically by deposition of CenH3, a centromere-specific histone H3 variant that dictates kinetochore assembly. The molecular basis of the contribution of CenH3 to centromere/kinetochore functions is, however, incompletely understood, as its interactions with the rest of centromere/kinetochore components remain largely uncharacterised at the molecular/structural level. [Principal Findings]: Here, we report on the contribution of Drosophil...

  12. THE DUSTY NOVA V1065 CENTAURI (NOVA CEN 2007): A SPECTROSCOPIC ANALYSIS OF ABUNDANCES AND DUST PROPERTIES

    International Nuclear Information System (INIS)

    We examine the ejecta evolution of the classical nova V1065 Centauri, constructing a detailed picture of the system based on spectrophotometric observations obtained from 9 to approximately 900 days post-outburst with extensive coverage from optical to mid-infrared wavelengths. We estimate a reddening toward the system of E(B-V) = 0.5 ± 0.1, based upon the B - V color and analysis of the Balmer decrement, and derive a distance estimate of 8.7+2.8-2.1 kpc. The optical spectral evolution is classified as P ofe Nne Ao according to the CTIO Nova Classification system of Williams et al. Photoionization modeling yields absolute abundance values by number, relative to solar of He/H = 1.6 ± 0.3, N/H = 144 ± 34, O/H = 58 ± 18, and Ne/H = 316 ± 58 for the ejecta. We derive an ejected gas mass of Mg = (1.6 ± 0.2) x 10-4 Msun. The infrared excess at late epochs in the evolution of the nova arises from dust condensed in the ejecta composed primarily of silicate grains. We estimate a total dust mass, Md , of order (0.2-3.7) x 10-7 Msun, inferred from modeling the spectral energy distribution observed with the Spitzer IRS and Gemini-South GNIRS spectrometers. Based on the speed class, neon abundance, and the predominance of silicate dust, we classify V1065 Cen as an ONe-type classical nova.

  13. X-ray imaging observations of the radio galaxies Cen A, Vir A, and 3C273

    International Nuclear Information System (INIS)

    This dissertation reports results from detailed two-dimensional X-ray images of three radio galaxies obtained with the High Resolution Imager and Imaging Proportional Counter on board the Einstein X-ray Observatory (HEAO-B satellite). The images reveal several distinct sources of X-ray emission in these galaxies including the active nucleus, hot interstellar medium, stars, radio lobes, and jets. The most important result is the discovery of X-ray jets in all three of these galaxies, demonstrating that highly energetic processes occur in the transport of energy and matter from radio galaxy nuclei to lobes. In addition, the strongest evidence to date for inverse Compton X-ray emission from extended radio lobes is provided and for hydrostatic (in contrast to ram) pressure confinement of radio lobes by a hot external medium. In Centaurus A = NGC 5128, the most dramatic X-ray structure is a linear jet of emission extending 8'' to 4' (0.2 to 6 kpc) from the nucleus towards the NE radio lobes. It consists of several resolved knots about 150 pc in radius, each emitting 1038 to 1039 erg/s in soft x-rays. Various thermal nd non-thermal models for the emission are considered in detail; none can be rigorously excluded with the available evidence. Also present in the images of Cen A are: X-ray emission associated with the outer optical jet and radio lobe; a ridge of emission below and parallel to the dust lane, probably produced by Population I sources; diffuse emission absorbed along the dust lane, probably due to a hot interstellar medium of about 108 M; the strong, variable nuclear source; and five X-ray sources unrelated to the galaxy, including a probable distant RS CVn binary system

  14. X-ray imaging observations of the radio galaxies Cen A, Vir A, and 3C273

    Energy Technology Data Exchange (ETDEWEB)

    Feigelson, E.D.

    1980-01-01

    This dissertation reports results from detailed two-dimensional X-ray images of three radio galaxies obtained with the High Resolution Imager and Imaging Proportional Counter on board the Einstein X-ray Observatory (HEAO-B satellite). The images reveal several distinct sources of X-ray emission in these galaxies including the active nucleus, hot interstellar medium, stars, radio lobes, and jets. The most important result is the discovery of X-ray jets in all three of these galaxies, demonstrating that highly energetic processes occur in the transport of energy and matter from radio galaxy nuclei to lobes. In addition, the strongest evidence to date for inverse Compton X-ray emission from extended radio lobes is provided and for hydrostatic (in contrast to ram) pressure confinement of radio lobes by a hot external medium. In Centaurus A = NGC 5128, the most dramatic X-ray structure is a linear jet of emission extending 8'' to 4' (0.2 to 6 kpc) from the nucleus towards the NE radio lobes. It consists of several resolved knots about 150 pc in radius, each emitting 10/sup 38/ to 10/sup 39/ erg/s in soft x-rays. Various thermal nd non-thermal models for the emission are considered in detail; none can be rigorously excluded with the available evidence. Also present in the images of Cen A are: X-ray emission associated with the outer optical jet and radio lobe; a ridge of emission below and parallel to the dust lane, probably produced by Population I sources; diffuse emission absorbed along the dust lane, probably due to a hot interstellar medium of about 10/sup 8/ M; the strong, variable nuclear source; and five X-ray sources unrelated to the galaxy, including a probable distant RS CVn binary system.

  15. Regulace cen roamingu

    OpenAIRE

    Koblihová, Veronika

    2011-01-01

    This diploma thesis examines the issue of the roaming regulation. The goal was to find out whether it had been necessary to regulate roaming prices at the EU level and what consequences it has and will have for individuals in the market - especially consumers, mobile operators, politicians, and also for the single European market. The basic hypothesis is that the roaming regulation will ultimately lead to a reduction in consumer utility, and therefore there is no substantial improvement to th...

  16. Brazilian Social Psychology in the international setting A Psicologia Social brasileira no cenário internacional

    Directory of Open Access Journals (Sweden)

    Ana Raquel Rosas Torres

    2013-03-01

    Full Text Available The objective of this work was to discuss the Social Psychology that has been developing in Brazil, placing it in the international theoretical-methodological setting. To achieve this goal, we initially present a brief historical account of the founding of the Brazilian Association of Social Psychology and the Latin American Association of Social Psychology, providing insight into the political struggle that surrounded the emergence of these two organizations and that, to a certain degree, is still present today. We then present the results of research conducted with 150 Brazilian social psychologists concerning the definition of social psychology, the academic training perspective, and the theories used in the conduct of research. The results point to the existence of several contradictions, since, among other matters, they highlight the fact that while most participants advocate research practices tied to a more sociological perspective, the definitions given indicate a more psychological view of social psychology.O objetivo deste trabalho foi discutir a psicologia social que vem sendo desenvolvida no Brasil inserindo-a no cenário teórico-metodológico internacional. Para alcançar este objetivo, inicialmente apresentamos um breve relato histórico da fundação da Associação Brasileira de Psicologia Social e da Associação Latino Americana de Psicologia Social, fornecendo subsídios para o entendimento do embate político que envolveu o surgimento dessas duas organizações e que, de certa forma, ainda está presente na atualidade. Em seguida, apresentamos os resultados da pesquisa realizada com 150 psicólogos sociais brasileiros sobre a definição de psicologia social, sobre a perspectiva de formação e sobre as teorias utilizadas na atividade de pesquisa. Os resultados indicam a existência de algumas contradições, pois, dentre outros aspectos, destaca-se o fato que, embora a maioria dos participantes advogue uma prática de

  17. Cenários ambientais para o ordenamento territorial de áreas de preservação permanente no município de Sorocaba, SP

    Directory of Open Access Journals (Sweden)

    Kaline de Mello

    2014-04-01

    Full Text Available Este estudo objetivou analisar a importância das Áreas de Preservação Permanente (APP para a manutenção dos remanescentes florestais no município de Sorocaba, SP. O mapa desses remanescentes foi elaborado com base em fotografias aéreas de 2006, e mapas de hidrografia e de declividade foram usados para determinação das APP. Compararam-se dois cenários: real (mata atual e ideal (mata atual acrescida da restauração das APP, com base em métricas da paisagem. Os resultados indicaram que 19% do município se enquadra como APP e, dessa área, apenas 45% possui cobertura florestal. As APP preservadas representam 50% do total de cobertura florestal da paisagem. A restauração das APP representaria aumento de 16,68% para 28% de cobertura florestal da paisagem e possibilitaria o surgimento de fragmentos maiores que 3.000 ha, enquanto no cenário real os maiores fragmentos atingem 300 ha. Os remanescentes florestais se apresentaram intimamente ligados às APP: margens de rios, áreas alagáveis e encostas, onde a ocupação urbana foi dificultada e existe o instrumento legal de proteção. Esse quadro evidencia que as APP possuem papel fundamental na conservação florestal em um município bastante urbanizado, onde as áreas naturais sofrem muita pressão. A avaliação dos cenários mostrou que a incorporação dos dispositivos legais no planejamento e ordenamento territorial subsidia as estratégias voltadas para a manutenção de hábitats naturais e, consequentemente, a diminuição dos efeitos negativos sobre a biodiversidade. Entretanto, as mudanças recentes no Código Florestal podem representar um retrocesso no cenário ambiental nacional diante da crescente urbanização.

  18. A Cinotecnia no Exército Português para o século XXI, novos cenários, novos desafios

    OpenAIRE

    Sousa, João

    2012-01-01

    O Trabalho de Investigação Aplicada versa sobre o tema A Cinotecnia no Exército Português para o Século XXI, Novos Cenários, Novos Desafios, a partir do qual foram levantadas questões envolventes, de modo a saber que contributo poderá dar a cinotecnia ao Exército. O trabalho encontra-se dividido essencialmente em duas partes, sendo a primeira a revisão bibliográfica; e a segunda metodologia e procedimentos, apresentação, análise e discussão de resultados, e conclusões. ...

  19. Planejamento por cenários: preparando pequenas empresas do varejo de móveis planejados para um futuro competitivo

    Directory of Open Access Journals (Sweden)

    Lisiane Pellini Faller

    2014-03-01

    Full Text Available Neste trabalho, propõe-se um modelo de construção de cenários para atender pequenas empresas do setor de móveis planejados, podendo, ainda, após sua validação, ser aplicado a outras empresas, observadas as suas limitações. O modelo proposto foi construído a partir das ideias e teorias existentes acerca da construção de cenários como ferramentas para a formulação de estratégias empresariais. Para sua validação, o modelo foi aplicado a uma pequena empresa do setor, na qual foi realizada pesquisa qualitativa e foram utilizados os instrumentos metodológicos de pesquisa documental e brainstorming, tendo participado sete profissionais da área. Na filtragem dos dados, utilizou-se modelo apresentando as seguintes variáveis: Macroambiente Clima (inflação, incentivos financeiros, crises mundiais e legislação; Solo (aumento da renda e da classe C, mudanças nos hábitos e trabalho feminino; Ambiente Operacional (concorrência, tendências, fornecedores, evolução tecnológica; e Ambiente Interno (valores e aspirações pessoais, qualificação profissional. Com base nas variáveis, elaboraram-se dois cenários para um universo de tempo até meados de 2018: um positivo, pressupondo alterações favoráveis para a alavancagem das vendas, crescimento físico e financeiro da organização; e um negativo, sendo desfavorável para a continuidade e o crescimento da organização, o que implica limitação de ações em função das restrições do mercado. E, finalmente, sobre cada cenário foram elaboradas sugestões de estratégias a serem adotadas pela empresa. O uso do modelo constatou a sua confiabilidade pelos resultados apresentados, bem como sua aplicabilidade, mostrando ser viável a sua proposta.

  20. Combinando intuição e objetividade na construção de cenários alternativos Combining intuition with objectivity in building scenarios

    Directory of Open Access Journals (Sweden)

    José Roberto Ribas

    2008-12-01

    Full Text Available O planejamento por meio de cenários completou 40 anos de existência. No período compreendido entre seu surgimento, em 1967, e o final da década de 70, observou-se um esforço analítico no sentido de aprimorar a técnica como ferramenta de apoio à decisão. Tal mobilização resultou em três linhas metodológicas distintas - as escolas de lógica intuitiva, de tendências probabilísticas e de análise prospectiva. Desde então, a preferência pela adoção da técnica dos cenários no planejamento não cresceu como se esperava. A limitação no seu uso é explicada pelo sucesso moderado que seus praticantes tiveram em balancear a tecnicalidade excessiva por um lado e a superficialidade relapsa por outro. Ademais, Millett (2003 destaca a reclamação da média gerência de que os cenários não tratam das situações competitivas e tampouco das decisões críticas que eles enfrentam em seus negócios. O autor sugere alguns desafios a serem enfrentados: (a resolver a confusão sobre a definição de cenário e as metodologias para a sua construção; (b esclarecer e ampliar as aplicações apropriadas aos cenários; e (c reduzir os recursos requeridos para executar o planejamento por cenários. O presente artigo tem por objetivo propor um procedimento para a construção de cenários que atenda a esses desafios. Por meio de uma abordagem exploratória, a metodologia proposta combina o julgamento subjetivo, obtido a partir da intuição dos especialistas, com métodos analíticos. O procedimento passo a passo foi aplicado ao longo da construção dos cenários alternativos para o consumo residencial de energia elétrica, no Estado do Paraná, até o ano 2015. As entrevistas estruturadas envolveram 14 especialistas selecionados por julgamento, e as informações secundárias foram coletadas de bases de dados socioeconômicos e do setor elétrico. Ao final, três cenários alternativos, com probabilidades subjetivas associadas, resultaram de

  1. A paisagem urbana e a publicidade exterior : um cenário vivo na configuração da experiência do sentir

    OpenAIRE

    Gonçalves, Helena; Pires, Helena

    2004-01-01

    Actualmente, as cidades mostram-se revestidas de imagens diversas, desde as sinalizações de trânsito e outras, até aos graffiti e ainda aos múltiplos letreiros dos estabelecimentos comerciais e de serviços que, mais ou menos ostensivamente, nos apontam o seu estandarte num cenário já de si visualmente saturado e desarrumado ao olhar. Pelo seu impacto, posição estratégica e estreita imbricação com a arquitectura urbana, bem como com todas as suas estruturas, nomeadamente as de mobilidade, a pu...

  2. Gamma irradiation facilities for radiation tolerance assessment of components and systems at SCK.CEN; Les installations d'irradiation gamma du SCK.CEN destinees a l'evaluation de la tenue en milieu radiatif de composants et de systemes

    Energy Technology Data Exchange (ETDEWEB)

    Coenen, S.; Decreton, M. [SCK-CEN, Mol (Belgium)

    1999-07-01

    This paper presents the different gamma irradiation facilities available at SCK-CEN (Mol, Belgium). With gamma dose rates ranging from 1 Gy/h up to 50 kGy/h, extensive environmental control and on-line instrumentation possibilities, they offer ideal test environments for the radiation tolerance assessment of components and systems for many applications where radiation tolerance is a concern. (authors)

  3. SCK-CEN participation to the IAEA CRP-8 - Area topic no. 2: ''Application of the master curve for dynamic testing''. Activity 2005

    International Nuclear Information System (INIS)

    The latest IAEA Co-ordinated Research Project (CRP-8) focuses on the application of the Master Curve approach to monitor fracture toughness of reactor pressure vessels in nuclear power power plants. Three main work areas have been identified: (a) constraint and geometry effects on Master Curve To values; (b) loading rate effects up to impact conditions; (c) potential changes of Master Curve shape for highly embrittled materials. After the kick-off meeting in Vienna in October 2004, the first Research Coordination Meeting was held in May 2005, hosted by AEKI Budapest. The present document focuses on the participation and contribution of SCK-CEN to Topic Area no. 2 (Loading rate effects on Master Curve - Impact Loading), for which E. Lucon acts as co-task leader. A Round-Robin exercise is planned for early 2006, consisting in 10 tests per participant on precracked Charpy-V specimen of JRQ, tested dynamically using an instrumented pendulum; the results will be analysed using the Master Curve procedure (ASTM E1921-05) and compared to data obtained at other loading rates (quasi-static and/or dynamic). Guidelines and detailed specifications have been produced and circulated after the meeting in Budapest. SCK-CEN has also produced data reporting sheets in EXCEL97 form, which will be used for reporting all fracture toughness test results (at quasi-static, dynamic or impact loading rates) performed in the framework of the CRP-8. (author)

  4. Brazilian Social Psychology in the international context: a commentary A Psicologia Social brasileira no cenário internacional: um comentário

    Directory of Open Access Journals (Sweden)

    Joaquim Pires Valentim

    2013-03-01

    Full Text Available The present paper is a commentary on the talks given by Torres and Álvaro and by Krüger regarding Brazilian Social Psychology in the international context. Starting with a brief contrast with the situation in Portugal, this commentary next approaches, in a synthetic way, questions that cut across social psychology in the international setting, namely, those related with the recurrent dichotomy individual/collective, the great advances in social neuroscience, the study of minorities, the scarcity of psychosocial research about colonialism, and lastly, contemporary issues of science and educational policy.Faz-se aqui um comentário às intervenções de Torres e Álvaro e de Krüger sobre a Psicologia Social brasileira no cenário internacional. Começando por estabelecer um breve contraste com a situação em Portugal, de seguida este comentário aborda, de forma sintética, questões transversais à psicologia social no cenário internacional, designadamente as que se relacionam com a recorrente dicotomia individual/coletivo, os enormes avanços na neurociência social, o estudo das minorias, a escassez de estudos psicossociais sobre o colonialismo e, por último, questões contemporâneas de política científica e de ensino.

  5. A indução afetiva em cenários de realidade virtual: avaliação da sensação de presença

    Directory of Open Access Journals (Sweden)

    Ana Ribeiro

    2015-07-01

    Full Text Available A Realidade Virtual (RV tem sido utilizada na indução de emoções associadas a respostas emocionais de maior validade ecológica. A presença, enquanto experiência de "estar lá", num determinado ambiente mediado, tornou-se intimamente associada à RV. O presente trabalho tem como objetivo verificar se a visualização dos Cenários de Indução Afetiva 3D induz uma maior sensação de presença comparativamente aos seus homólogos apresentados com a tecnologia 2D. Apresentamos a 30 participantes saudáveis os Cenários de Indução Afetiva 3D em ambas as modalidades de visualização (2D vs.3D, simultaneamente efetuavam-se registros psicofisiológicos da Atividade Eletrodérmica e do Ritmo Cardíaco e, no final da visualização de cada cenário, aplicamos a escala de dominância do Self-Assessment Manikinadaptada para medir a presença, bem como o Slater-Usoh-Steed Questionnaire, que é um instrumento de autorrelato para avaliação da sensação de presença provocada. Os resultados globais sugerem que Cenários de Indução Afetiva 3D induzem uma maior sensação de presença, comparativamente aos seus homólogos apresentados na tecnologia 2D. Verificamos ainda que o cenário de valência desagradável provoca maior sensação de presença comparativamente com os cenários de valência agradável e neutro.

  6. Theoretical study on Ce-N codoped anatase titanium dioxide%Ce-N共掺杂锐钛矿型二氧化钛的理论研究

    Institute of Scientific and Technical Information of China (English)

    魏志钢; 陈世荣; 文梦葵; 潘湛昌; 钟雪春; 徐艳阳

    2011-01-01

    [目的]研究Ce-N共掺杂对锐钛矿TiO2晶体可见光区催化活性的影响.[方法]采用基于密度泛函理论(DFT)框架下的第一性原理平面波赝势(PWPP)方法,研究掺杂对锐钛矿TiO2晶体的晶体结构、能带、态密度的改变,推断Ce-N共掺杂对锐钛矿TiO2晶体可见光区催化活性的影响.[结果]Ce-N共掺杂TiO2后,晶体的对称性和点群没有改变.通过对比纯TiO2,N掺杂TiO2,Ce掺杂TiO2和Ce-N共掺杂TiO2的能带和态密度可以得出:纯TiO2的能隙较宽,价带顶主要为O-2p轨道的贡献,导带底主要为Ti-3d轨道的贡献;N掺杂后,由于N-2p轨道的作用会使导带底向低能端移动,价带顶向高能端移动;Ce掺杂后,由于Ce-4f轨道进入导带,会使导带底向低能端移动:Ce-N共掺杂后,由于N和Ce的共同作用,使导带底向低能端移动,价带顶向高能端移动,同时Ce-4f轨道进入导带底,从而使禁带宽度进一步变小,会拓展该晶体的可见光响应范围.这一结果与我们在实验中获得的紫外-可见光谱相一致.[结论]通过我们的计算和实验,说明Ce-N共掺杂可以改善和提高Ti02在可见光区的活性,这种材料具有很好的应用前景,值得做进一步的实验研究.%[objective] To investigate the optical catalytic property of Ce-N codoped TiO2 crystal. [method] Using density function theory (DFT), the geometry, the band structure and the electronic density of states of pure TiO2, N doped TiO2, Ce doped TiO2 and Ce-N codeped TiO2 were calculated at plane wave ultra-soft pseudo-Potential level (PWPP). Based on the calculated results, the optical catalytic properties of them can be predicted and compared. [result] It shows that the symmetry of Ce-N codoped anatase TiO2 maintains the same as pure TiO2's, while the lattice parameters a and c become larger. For pure TiO2, the top of the value bands mainly involves O-2p electrons and the bottom of conduction bands contains Ti-3d electrons.For N doped TiO2, the

  7. Mis17 Is a Regulatory Module of the Mis6-Mal2-Sim4 Centromere Complex That Is Required for the Recruitment of CenH3/CENP-A in Fission Yeast

    OpenAIRE

    Shiroiwa, Yoshiharu; Hayashi, Takeshi; Fujita, Yohta; Villar-Briones, Alejandro; Ikai, Nobuyasu; Takeda, Kojiro; Ebe, Masahiro; Yanagida, Mitsuhiro

    2011-01-01

    Background The centromere is the chromosome domain on which the mitotic kinetochore forms for proper segregation. Deposition of the centromeric histone H3 (CenH3, CENP-A) is vital for the formation of centromere-specific chromatin. The Mis6-Mal2-Sim4 complex of the fission yeast S. pombe is required for the recruitment of CenH3 (Cnp1), but its function remains obscure. Methodology/Principal Findings Mass spectrometry was performed on the proteins precipitated with Mis6- and Mis17-FLAG. The re...

  8. Mis17 Is a Regulatory Module of the Mis6-Mal2-Sim4 Centromere Complex That Is Required for the Recruitment of CenH3/CENP-A in Fission Yeast

    OpenAIRE

    Yoshiharu Shiroiwa; Takeshi Hayashi; Yohta Fujita; Alejandro Villar-Briones; Nobuyasu Ikai; Kojiro Takeda; Masahiro Ebe; Mitsuhiro Yanagida

    2011-01-01

    BACKGROUND: The centromere is the chromosome domain on which the mitotic kinetochore forms for proper segregation. Deposition of the centromeric histone H3 (CenH3, CENP-A) is vital for the formation of centromere-specific chromatin. The Mis6-Mal2-Sim4 complex of the fission yeast S. pombe is required for the recruitment of CenH3 (Cnp1), but its function remains obscure. METHODOLOGY/PRINCIPAL FINDINGS: Mass spectrometry was performed on the proteins precipitated with Mis6- and Mis17-FLAG. The ...

  9. SCK-CEN Contribution to the IAEA Round Robin Exercise on WWER-440 RPV Weld Material Irradiation, Annealing and Re-Embrittlement

    International Nuclear Information System (INIS)

    The contribution of the Belgian Nuclear Research Centre SCK-CEN to the IAEA Round Robin Exercise on WWER-440 RPV weld material is reported. The objective of this contribution is twofold: (1) to gain experience in the field of the testing of WWER-440 steels; (2) to analyse the round-robin data according to in-house developed on used models in order to check their validity and applicability. Results from testing on unirradiated material are reported including data obtained from chemical analysis, Charpy-V impact testing, tensile testing and fracture toughness determination. Finally, irradiation strategies that can be used in the program to obtain irradiated, irradiated-annealed and irradiated-annealed-reirradiated conditions are outlined

  10. Impacto da terapia anti-retroviral na magnitude da epidemia do HIV/AIDS no Brasil: diversos cenários

    Directory of Open Access Journals (Sweden)

    Maria Tereza S. Barbosa

    2003-04-01

    Full Text Available Neste trabalho, utilizaram-se os algoritmos EM e EMS aplicados ao método do Cálculo Retroativo para estimar a magnitude da epidemia do HIV no Brasil. Fazendo-se suposições a respeito do comportamento dos infectados, em relação à utilização da terapia combinada das drogas anti-retrovirais, construíram-se cinco cenários para a epidemia brasileira. O objetivo foi o de ilustrar os impactos que a utilização da terapia combinada das drogas anti-retrovirais possam estar tendo ou possam vir a ter na incubação do vírus e, por conseguinte, nas avaliações da epidemia realizadas a partir dos casos de Aids notificados.

  11. Impact of elevated temperature scenarios on potato leaf development Impacto de cenários de aumento de temperatura no desenvolvimento foliar da batata

    Directory of Open Access Journals (Sweden)

    Nereu A. Streck

    2012-08-01

    Full Text Available The objective of this study was to simulate the impact of elevated temperature scenarios on leaf development of potato in Santa Maria, RS, Brazil. Leaf appearance was estimated using a multiplicative model that has a non-linear temperature response function which calculates the daily leaf appearance rate (LAR, leaves day-1 and the accumulated number of leaves (LN from crop emergence to the appearance of the upper last leaf. Leaf appearance was estimated during 100 years in the following scenarios: current climate, +1 °C, +2 °C, +3 °C, +4 °C e +5 °C. The LAR model was estimated with coefficients of the Asterix cultivar in five emergence dates and in two growing seasons (Fall and Spring. Variable of interest was the duration (days of the crop emergence to the appearance of the final leaf number (EM-FLN phase. Statistical analysis was performed assuming a three-factorial experiment, with main effects being climate scenarios, growing seasons, and emergence dates in a completely randomized design using years (one hundred as replications. The results showed that warmer scenarios lead to an increase, in the fall, and a decrease, in the spring growing season, in the duration of the leaf appearance phase, indicating high vulnerability and complexity of the response of potato crop grown in a Subtropical environment to climate change.O objetivo, neste trabalho, foi estimar o impacto de cenários de temperaturas elevadas no desenvolvimento foliar da cultura da batata, em Santa Maria-RS, Brasil. A emissão de folhas da cultura da batata foi estimada por um modelo multiplicativo com função de reposta não linear à temperatura que calcula a taxa diária de aparecimento de folhas (TAF, folhas dia-1 e o número acumulado de folhas (NF a partir da data de emergência da cultura até o surgimento da última folha. A emissão de folhas foi estimada em 100 anos de cada um dos cenários climáticos: clima atual, +1 °C, +2 °C, +3 °C, +4 °C e +5 °C. O

  12. Means and methods used to check radiation detection, signalling and alarm devices in the centralized environment control systems of the INB of CEN-Saclay

    International Nuclear Information System (INIS)

    Having reviewed the prescribed technical measures concerning 'systematic environment controls' in INB (Installations nucleaires de base - basic nuclear facilities) and published in the J.O. (French Official Journal) the authors briefly describe the main radiation detection, signalling and alarm systems at present installed in INB of CEN-Saclay and weigh up the extent to which their characteristics comply with the statutory texts. They then develop the means and methods set up to check on the good working order of these devices which are integrated in centralised one-piece modular analogue or informatics type control systems possible functioning anomalies being classed in two categories: logic type anomalies corresonding to a straightforward breakdown where detection is permanent; developing anomalies corresponding to poor functioning where detection requires a more critical and periodic control. The authors demonstrate the advantages offered by centralised computer type control systems

  13. On the Optical -- X-ray correlation from outburst to quiescence in Low Mass X-ray Binaries: the representative cases of V404 Cyg and Cen X-4

    CERN Document Server

    Bernardini, F; Koljonen, K I I; Stella, L; Hynes, R I; Corbel, S

    2016-01-01

    Low mass X-ray binaries (LMXBs) show evidence of a global correlation of debated origin between X-ray and optical luminosity. We study for the first time this correlation in two transient LMXBs, the black hole V404 Cyg and the neutron star Cen X-4, over 6 orders of magnitude in X-ray luminosity, from outburst to quiescence. After subtracting the contribution from the companion star, the Cen X-4 data can be described by a single power law correlation of the form $L_{opt}\\propto\\,L_{X}^{0.44}$, consistent with disk reprocessing. We find a similar correlation slope for V404 Cyg in quiescence (0.46) and a steeper one (0.56) in the outburst hard state of 1989. However, V404 Cyg is about $160-280$ times optically brighter, at a given $3-9$ keV X-ray luminosity, compared to Cen X-4. This ratio is a factor of 10 smaller in quiescence, where the normalization of the V404 Cyg correlation also changes. We show that once the bolometric X-ray emission is considered and the known main differences between V404 Cyg and Cen X...

  14. Dark energy in the environments of the Local Group, the M 81 group, and the CenA group: the normalized Hubble diagram

    Science.gov (United States)

    Teerikorpi, P.; Chernin, A. D.; Karachentsev, I. D.; Valtonen, M. J.

    2008-05-01

    Context: Type Ia supernova observations on scales of thousands of Mpc show that the global expansion of the universe is accelerated by antigravity produced by the enigmatic dark energy contributing 3/4 of the total energy of the universe. Aims: Does antigravity act on small scales as well as large? As a continuation of our efforts to answer this crucial question we combine high accuracy observations of the galaxy flows around the Local Group and the nearby M 81 and CenA groups to observe the effect of the dark energy density on local scales of a few Mpc. Methods: We use an analytical model to describe non-uniform static space-time regions around galaxy groups. In this context it is useful to present the Hubble flow in a normalized Hubble diagram V/Hv Rv vs. r/R_v, where the vacuum Hubble constant Hv depends only on the cosmological vacuum density and the zero-gravity distance Rv depends on the vacuum density and on the mass of the galaxy group. We have prepared the normalized Hubble diagrams for the LG, M 81 and CenA group environments for different values of the assumed vacuum energy density, using a total of about 150 galaxies, for almost all of which the distances have been measured by the HST. Results: The normalized Hubble diagram, where we identify dynamically different regions, is in agreement with the standard vacuum density (Ωv = 0.77~h_70-2), the out-flow of galaxies clearly being controlled by the minimum energy condition imposed by the central mass plus the vacuum density. A high vacuum density 1.6~h_70-2 violates the minimum energy limit, while a low density 0.1~h_70-2 leaves the start of the Hubble flow around 1-2 Mpc with the slope close to the global value obscure. We also consider the subtle relation of the zero-gravity radius Rv to the zero-velocity distance R0 appearing in the usual retarded expansion around a mass M: in a vacuum-dominated flat universe R0 ≈ 0.76 R_v. Conclusions: The normalized Hubble diagram appears to be a good way to

  15. Emplois de réputé, censé et supposé dans les définitions de dictionnaires de langue contemporains

    Directory of Open Access Journals (Sweden)

    Féron Corinne

    2012-07-01

    Full Text Available On étudiera, dans les définitions de dictionnaires de langue contemporains, l’emploi des unités censé, supposé et réputé, dans la construction : N (être supposé/réputé X, où N est un nom ou un groupe nominal et X un infinitif, un adjectif ou un groupe nominal. Notre étude se situe dans le cadre théorique des univers de croyance. L’objectif est double. Il s’agit, d’une part, de décrire comment se construit l'interprétation de ces unités ; de l’autre, d’analyser le statut, dans ces définitions, des segments N censé/supposé/réputé X, au regard du modèle de la définition aristotélicienne et de la notion de stéréotype. Les unités sous étude sont ici considérées comme modalisatrices : toutes catégorisent la proposition à laquelle elles s’associent comme une vue de l’esprit ; aucune ne spécifie la valeur de vérité (vrai, faux, etc. que le locuteur attribue à cette proposition. Ces points communs expliquent - sans doute - que les dictionnaires les présentent généralement comme des synonymes ; ils n’expliquent pas les nuances qui les distinguent, ni les possibilités qu’elles offrent d’interpréter telle proposition comme une croyance, un stéréotype, etc. Elles sont de ce fait, des lieux où se manifeste la présence du lexicographe, qui mêle à la définition de la signification linguistique des informations de type encyclopédique ou stéréotypique.

  16. Planetary Construction Zones in Occultation: Eclipses by Circumsecondary and Circumplanetary Disks and a Candidate Eclipse of a Pre-Main Sequence Star in Sco-Cen

    CERN Document Server

    Mamajek, Eric E; Pecaut, Mark; Moolekamp, Fred; Scott, Erin L; Kenworthy, Matthew; Cameron, Andrew Collier; Parley, Neil

    2011-01-01

    The large relative sizes of circumstellar and circumplanetary disks imply that they might be seen in eclipse in stellar light curves. We present photometric and spectroscopic data for a pre-main sequence K5 star (1SWASP J140747.93-394542.6 = ASAS J140748-3945.7), a newly discovered ~0.9 Msun member of the ~16 Myr-old Upper Centaurus-Lupus subgroup of Sco-Cen at a distance of 128+-13 pc. This star exhibited a remarkably long, deep, and complex eclipse event centered on 29 April 2007 (as discovered in SuperWASP photometry, and with portions of the dimming confirmed by ASAS data). At least 5 multi-day dimming events of >0.5 mag are identified, with a >3.3 mag deep eclipse bracketed by two pairs of ~1 mag eclipses symmetrically occurring +-12 days and +-26 days before and after. Hence, significant dimming of the star was taking place on and off over at least a ~54 day period in 2007, and a strong >1 mag dimming event occurring over a ~12 day span. We place a firm lower limit on the period of 850 days (i.e. the o...

  17. A Ecogastronomia nos Cursos Superiores de Gastronomia do Estado de São Paulo: Conceitos, Aplicações e Cenário Observado

    Directory of Open Access Journals (Sweden)

    Rebeca Elster Rubim

    2013-06-01

    Full Text Available Diante de um cenário de discussão mundial sobre a finitude de recursos naturais, sobretudo diante da possibilidade real de uma crise de produção e distribuição de alimentos, surge a necessidade do questionamento sobre a postura da sociedade frente às suas escolhas alimentares. Particularmente ao profissional de gastronomia, cabe a responsabilidade de estabelecer práticas conscientes e éticas no dia a dia de sua cozinha. Este artigo, fruto da pesquisa de mestrado em Hospitalidade da Universidade Anhembi Morumbi (SP destaca a ecogastronomia em sua relação a novos paradigmas educacionais e suas possíveis aplicações; explica a seleção da amostra intencional da pesquisa, assim como os temas de análise das entrevistas realizadas. Como resultado, observou-se que os coordenadores entendem que a mudança para um novo paradigma de formação dependerá de modificação cultural geral e não apenas do mercado gastronômico ou de alimentação.  

  18. As concepções e cenários do ensino de enfermagem psiquiátrica e saúde mental

    Directory of Open Access Journals (Sweden)

    Luciane Prado Kantorski

    2001-09-01

    Full Text Available Este trabalho aborda as contradições que perpassam o ensino de enfermagem psiquiátrica e saúde mental nas quatro universidades públicas do Rio Grande do Sul. Consiste em um estudo qualitativo que se utiliza do referencial dialético. Os instrumentos utilizados foram: programas das disciplinas da área de enfermagem psiquiátrica e saúde mental e entrevistas com professores da área (15 e entrevistas com alunos (14. A temática central de análise consiste nas concepções e cenários onde se operacionaliza o ensino de enfermagem psiquiátrica e saúde mental. Constatamos que as disciplinas da área apresentam predominantemente o enfoque do normal e do patológico no transcorrer do ciclo vital, tendo influências do discurso da psiquiatria preventiva, da psicanálise, sendo predominantemente voltadas para o enfoque psicodinâmico. Os estágios na área continuam a ser realizados majoritariamente nos hospitais psiquiátricos de grande porte enfatizando as psicopatologias, suas determinações psicossociais que acentuam a manutenção do modelo manicomial.

  19. Řízení cash flow při minimální ceně stavební zakázky

    OpenAIRE

    Šmýdová, Lucie

    2013-01-01

    Obsahem této diplomové práce je řízení cash flow při minimální ceně stavební zakázky „Intenzifikace čističky odpadních vod Sokolov – I. etapa“. Jsou zde srovnány dvě varianty řízení cash flow zakázky, které se liší smluvními podmínkami mezi stavebním podnikem a zhotovitelem subdodávky. V první variantě podnik požaduje splatnost faktur 90 dnů a zajištění záruk pomocí bankovní garance po subdodavateli. V další variantě subdodavatel poskytl podniku možnost využit 9% skonta při splatnosti faktur ...

  20. A face flutuante da organização: novos desafios para um cenário em mutação

    Directory of Open Access Journals (Sweden)

    Maria da Conceição Araújo Castro

    2009-01-01

    Full Text Available A natureza das transformações políticas, sociais e econômicas que ganham destaque no atual cenário mundial fazem com que as relações das organizações com seus ambientes fiquem ainda mais complexas, levando-as a enfrentar o desafio de repensar suas ações e de promover rupturas com antigos paradigmas, ao mesmo tempo que necessitam aprender a lidar com as mudanças que estão ocorrendo em todos os seus domínios e relações externas. Palavras-chave: Organização, Mudança, Incerteza, Desafios Abstract As result of the nature of economics, policies and social events and of the complex reality, the organizations of current days face the challenge to rethink its actions and to promote ruptures with old paradigms, at the same time that they learn to deal with the changes that are ocurring in all its structures and relations. Key Words: Organization, Change, Uncertainty, Challenges

  1. High Speed photometry of faint Cataclysmic Variables I. V359 Cen, XZ Eri, HY Lup, V351 Pup, V630 Sgr, YY Tel, CQ Vel, CE-315

    CERN Document Server

    Woudt, P A; Woudt, Patrick A.; Warner, Brian

    2001-01-01

    The first results of a photometric survey of faint Cataclysmic Variables are presented. V359 Cen is an SU UMa star with a period of 112 min. Even though observed at quiescence, the mass transfer rate in this old nova may be sufficiently high that in such a short period system (with its implied small mass ratio) the disc may be excited into an elliptical shape with the result that the observed brightness modulation gives a superhump period rather than an orbital period. XZ Eri is an eclipsing dwarf nova with an orbital period (P(orb)) of 88.1 min. HY Lup has only slight variability. V351 Pup, the remnant of Nova Puppis 1991, has P(orb) = 2.837 h and a light curve that strongly resembles that of the magnetic Nova Cyg 1975. V630 Sgr is the first nova remnant that has both positive superhumps (P(sh) = 2.980 h) and eclipses (P(orb) = 2.831 h). The YY Tel identification is somewhat uncertain. The correct identification for CQ Vel is provided from discovery of its flickering activity. The light curve of CE-315, a re...

  2. Human adrenodoxin reductase: Two mRNAs encoded by a single gene on chromosome 17cen → q25 are expressed in steroidogenic tissues

    International Nuclear Information System (INIS)

    Adrenodoxin reductase is a mitochondrial flavoprotein that receives electrons from NADPH, thus initiating the electron-transport chain serving mitochondrial cytochromes P450. The authors have cloned and sequenced two human adrenodoxin reductase cDNAs that differ by the presence of six additional codons in the middle of one clone. The sequence in this region indicates that these six extra codons arise by alternative splicing of the pre-mRNA. Southern blot hybridization patterns of human genomic DNA cut with four restriction enzymes indicate that the human genome has only one gene for adrenodoxin reductase. Analysis of a panel of mouse-human somatic cell hybrids localized this gene to chromosome 17cen → q25. The alternatively spliced mRNA containing the six extra codons represents 10-20% of all adrenodoxin reductase mRNA. The expression of the adrenodoxin reductase gene may be stimulated by pituitary tropic hormones acting through cAMP, but its response is quantitatively much less than the responses of P450scc and adrenodoxin

  3. Transferências voluntárias da União para municípios brasileiros: mapeamento do cenário nacional

    Directory of Open Access Journals (Sweden)

    José da Assunção Moutinho

    2016-02-01

    Full Text Available Resumo O objetivo deste artigo é mapear o cenário nacional de descentralização de recursos do governo federal para municípios brasileiros, via transferências voluntárias, por meio de programáticas ministeriais e de emendas parlamentares individuais dos deputados federais. Recorrendo ao método de pesquisa documental, fontes oficiais de informações foram acessadas, possibilitando a construção de banco de dados para análise e interpretação. Os resultados apontaram para uma distribuição heterogênea de recursos entre os municípios do Brasil. Além disso, o estudo concluiu que a taxa de liberação de propostas decorrentes de emendas parlamentares foi bem maior do que aquelas resultantes dos editais da própria programática dos ministérios.

  4. Dissolved inorganic carbon, total alkalinity, pH, and other variables collected from time series and profile observations using CTD, Niskin bottle,and other instruments near CenGOOS buoy off the coast of Mississippi in the Gulf of Mexico from 2012-10-15 to 2014-04-22 (NCEI Accession 0131199)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This archival package contains time series profile (discrete bottle) data that were collected at the GenGOOS buoy off the coast of Mississippi. The CenGOOS 3-m...

  5. Monte Carlo simulation analysis of integral data measured in the SCK-CEN/ENEA experimental campaign on the TAPIRO fast reactor. Experimental and calculated data comparison

    Energy Technology Data Exchange (ETDEWEB)

    Burgio, N., E-mail: nunzio.burgio@enea.it [ENEA (Italian National Agency for New Technologies, Energy and Sustainable Economic Development), C.R. Casaccia Via Anguillarese 301, 00123 Rome (Italy); Cretara, L., E-mail: luca.cretara@uniroma1.it [DIAEE – Sapienza University of Rome, Corso Vittorio Emanuele II 244, 00186 Rome (Italy); Frullini, M., E-mail: massimo.frullini@uniroma1.it [DIAEE – Sapienza University of Rome, Corso Vittorio Emanuele II 244, 00186 Rome (Italy); Gandini, A., E-mail: augusto.gandini@uniroma1.it [DIAEE – Sapienza University of Rome, Corso Vittorio Emanuele II 244, 00186 Rome (Italy); Peluso, V., E-mail: vincenzogiuseppe.peluso@enea.it [ENEA (Italian National Agency for New Technologies, Energy and Sustainable Economic Development), Via Martiri di monte Sole 4, 40129 Bologna (Italy); Santagata, A., E-mail: alfonso.santagata@enea.it [ENEA (Italian National Agency for New Technologies, Energy and Sustainable Economic Development), C.R. Casaccia, Via Anguillarese 301, 00123 Rome (Italy)

    2014-07-01

    Highlights: • We develop a MCNPX model of the TAPIRO fast research reactor. • The model has been tested against the result of a late experimental champaign finding on overall agreement. • The source of uncertainties in the nuclear data and in the model assumptions has been discussed. • The model is sufficiently accurate to design irradiation experiment in support to R and D activities on LFR and ADS systems. - Abstract: After Fukushima events, the Italian nuclear program has been redefined leaving space only to activities related to Generation IV nuclear systems. Accordingly with this renewed national scenario, TAPIRO fast reactor facility is gaining a relatively major strategic role. A program is in fact being proposed to host in TAPIRO benchmark experimental activities related to the development of Lead fast reactor and Accelerator Driven Systems. A first step of this program would consist on the validation of neutronic codes, cross section data and reactor models to be adopted for its analysis. Along this line in this work the results of a simulation study has been made relevant to the measurements performed in the SCK-CEN/ENEA experimental campaign carried out in the 1980–1986 period. The calculations have been made using the Monte Carlo MCNPX 2.7.0 Code. In this article the main results are presented and discussed, with particular emphasis on the uncertainties, relevant both to nuclear data and the model layout. The results of this simulation study indicate in particular that TAPIRO's MCNPX model is adequate for the optimization of set-ups of perspective neutron irradiation experiments, this allowing cuts in costs and development time.

  6. Monte Carlo simulation analysis of integral data measured in the SCK-CEN/ENEA experimental campaign on the TAPIRO fast reactor. Experimental and calculated data comparison

    International Nuclear Information System (INIS)

    Highlights: • We develop a MCNPX model of the TAPIRO fast research reactor. • The model has been tested against the result of a late experimental champaign finding on overall agreement. • The source of uncertainties in the nuclear data and in the model assumptions has been discussed. • The model is sufficiently accurate to design irradiation experiment in support to R and D activities on LFR and ADS systems. - Abstract: After Fukushima events, the Italian nuclear program has been redefined leaving space only to activities related to Generation IV nuclear systems. Accordingly with this renewed national scenario, TAPIRO fast reactor facility is gaining a relatively major strategic role. A program is in fact being proposed to host in TAPIRO benchmark experimental activities related to the development of Lead fast reactor and Accelerator Driven Systems. A first step of this program would consist on the validation of neutronic codes, cross section data and reactor models to be adopted for its analysis. Along this line in this work the results of a simulation study has been made relevant to the measurements performed in the SCK-CEN/ENEA experimental campaign carried out in the 1980–1986 period. The calculations have been made using the Monte Carlo MCNPX 2.7.0 Code. In this article the main results are presented and discussed, with particular emphasis on the uncertainties, relevant both to nuclear data and the model layout. The results of this simulation study indicate in particular that TAPIRO's MCNPX model is adequate for the optimization of set-ups of perspective neutron irradiation experiments, this allowing cuts in costs and development time

  7. Scenarios for the milk production chain in Brazil in 2020 Escenarios para la cadena de producción de leche en Brasil en 2020 Cenários para a cadeia produtiva de leite no Brasil em 2020

    Directory of Open Access Journals (Sweden)

    Renata Giovinazzo Spers

    2013-06-01

    ís tornou-se autossuficiente na produção. Dado esse contexto, no presente artigo tem-se por objetivo desenvolver cenários potenciais para a cadeia produtiva do leite no Brasil. Foi realizada uma pesquisa bibliográfica e aplicada uma metodologia de escrita de cenários, incluindo a aplicação do método Delphi e projeções quantitativas. A matriz dos cenários foi criada com dados quantitativos e qualitativos, resultando em quatro cenários: dois cenários exploratórios, um cenário mais provável e um cenário desejado. Foram formuladas potenciais alternativas futuras, a fim de melhorar a qualidade das decisões estratégicas feitas por diferentes agentes.

  8. A eclosão dos periódicos do Brasil e cenários para o seu porvir

    Directory of Open Access Journals (Sweden)

    Abel Laerte Packer

    2014-06-01

    Full Text Available Os periódicos de qualidade do Brasil alcançaram, nos últimos anos, um notável avanço, com a crescente presença nos índices bibliográficos internacionais e na web, impulsionados principalmente pela comunicação de resultados de pesquisa de autores brasileiros das diferentes áreas do conhecimento e com uso diferenciado dos idiomas inglês e português. Pelo menos 80% dos seus artigos originais e de revisão indexados internacionalmente têm afiliação brasileira e representam cerca de 30% do total da produção científica indexada do Brasil. Porém, essa centralidade nacional é acompanhada de baixo impacto, medido pelo número de citações recebidas nos índices, em comparação ao que obtêm os periódicos dos países desenvolvidos. Embora o desempenho seja compatível com o dos periódicos de países emergentes e a publicação em acesso aberto resulte em cifras extraordinárias de downloads de artigos, boa parte dos periódicos do Brasil enfrenta o desafio de qualificar-se para, de modo concomitante, competir nacional e internacionalmente por manuscritos de melhor qualidade e melhorar o desempenho nos índices internacionais. Essa almejada qualificação requer a superação das limitações inerentes às condições institucionais, de gestão e financiamento nas quais operam e o avanço da profissionalização, internacionalização e inovações nos processos de editoração, publicação e disseminação, alinhados ao estado da arte internacional. Este artigo apresenta um panorama das principais características bibliométricas e de gestão editorial do conjunto dos 400 periódicos do Brasil indexados no SciELO, Scopus e WoS e projeta cenários de mudança na composição atual com a promoção de periódicos de referência internacional e na forma como são avaliados e financiados.

  9. Past research and fabrication conducted at SCK-CEN on ferritic ODS alloys used as cladding for FBR's fuel pins

    Energy Technology Data Exchange (ETDEWEB)

    De Bremaecker, Anne, E-mail: adbremae@sckcen.be [Studiecentrum voor Kernenergie-Centre d' Etude de l' Energie Nucleaire (SCK-CEN), NMS, Mol (Belgium)

    2012-09-15

    In the 1960s in the frame of the sodium-cooled fast breeders, SCK-CEN decided to develop claddings made with ferritic stainless materials because of their specific properties, namely a higher thermal conductivity, a lower thermal expansion, a lower tendency to He-embrittlement, and a lower swelling than the austenitic stainless steels. To enhance their lower creep resistance at 650-700 Degree-Sign C arose the idea to strengthen the microstructure by oxide dispersions. This was the starting point of an ambitious programme where both the matrix and the dispersions were optimized. A purely ferritic 13 wt% Cr matrix was selected and its mechanical strength was improved through addition of ferritizing elements. Results of tensile and stress-rupture tests showed that Ti and Mo were the most beneficial elements, partly because of the chi-phase precipitation. In 1973 the optimized matrix composition was Fe-13Cr-3.5Ti-2Mo. To reach creep properties similar to those of AISI 316, different dispersions and methods were tested: internal oxidation (that was not conclusive), and the direct mixing of metallic and oxide powders (Al{sub 2}O{sub 3}, MgO, ZrO{sub 2}, TiO{sub 2}, ZrSiO{sub 4}) followed by pressing, sintering, and extrusion. The compression and extrusion parameters were determined: extrusion as hollow at 1050 Degree-Sign C, solution annealing at 1050 Degree-Sign C/15 min, cleaning, cold drawing to the final dimensions with intermediate annealings at 1050 Degree-Sign C, final annealing at 1050 Degree-Sign C, straightening and final aging at 800 Degree-Sign C. The choice of titania and yttria powders and their concentrations were finalized on the basis of their out-of-pile and in-pile creep and tensile strength. As soon as a resistance butt welding machine was developed and installed in a glove-box, fuel segments with PuO{sub 2} were loaded in Belgian MTR BR2. The fabrication parameters were continuously optimized: milling and beating, lubrication, cold drawing (partial

  10. Mis17 is a regulatory module of the Mis6-Mal2-Sim4 centromere complex that is required for the recruitment of CenH3/CENP-A in fission yeast.

    Directory of Open Access Journals (Sweden)

    Yoshiharu Shiroiwa

    Full Text Available BACKGROUND: The centromere is the chromosome domain on which the mitotic kinetochore forms for proper segregation. Deposition of the centromeric histone H3 (CenH3, CENP-A is vital for the formation of centromere-specific chromatin. The Mis6-Mal2-Sim4 complex of the fission yeast S. pombe is required for the recruitment of CenH3 (Cnp1, but its function remains obscure. METHODOLOGY/PRINCIPAL FINDINGS: Mass spectrometry was performed on the proteins precipitated with Mis6- and Mis17-FLAG. The results together with the previously identified Sim4- and Mal2-TAP precipitated proteins indicated that the complex contains 12 subunits, Mis6, Sim4, Mal2, Mis15, Mis17, Cnl2, Fta1-4, Fta6-7, nine of which have human centromeric protein (CENP counterparts. Domain dissection indicated that the carboxy-half of Mis17 is functional, while its amino-half is regulatory. Overproduction of the amino-half caused strong negative dominance, which led to massive chromosome missegregation and hypersensitivity to the histone deacetylase inhibitor TSA. Mis17 was hyperphosphorylated and overproduction-induced negative dominance was abolished in six kinase-deletion mutants, ssp2 (AMPK, ppk9 (AMPK, ppk15 (Yak1, ppk30 (Ark1, wis4 (Ssk2, and lsk1 (P-TEFb. CONCLUSIONS: Mis17 may be a regulatory module of the Mis6 complex. Negative dominance of the Mis17 fragment is exerted while the complex and CenH3 remain at the centromere, a result that differs from the mislocalization seen in the mis17-362 mutant. The known functions of the kinases suggest an unexpected link between Mis17 and control of the cortex actin, nutrition, and signal/transcription. Possible interpretations are discussed.

  11. A Revolução de Abril recriada pela imprensa internacional. Personagens, cenários e património ideológico-cultural dos enunciadores: um estudo de caso

    OpenAIRE

    Gomes, Marco

    2016-01-01

    Este artigo estuda a forma como a imprensa de referência italiana reportou a Revolução de Abril, analisando a construção de cenários da narrativa jornalística, as caraterísticas atribuídas às personagens, os paralelismos históricos e a influência do património ideológico-cultural dos jornalistas no âmbito do enquadramento disseminado. A partir do estudo de caso focado nos jornais Corriere della Sera, La Stampa e Il Messaggero, conclui-se que os jornalistas italianos se envolveram no enredo da...

  12. Novos Cenários de Aprendizagem, Inovação e Sustentabilidade: Uma Pesquisa-Ação na Graduação em Ciências e Tecnologia

    Directory of Open Access Journals (Sweden)

    Maria Madalena Colette

    2014-09-01

    Full Text Available O presente artigo trata de uma Pesquisa-Ação, realizada em 2012 no UNIFESO, voltada à criação de novos cenários de aprendizagem. O projeto de pesquisa focalizou a criação de formas de apoio às iniciativas empreendedoras dos estudantes relacionadas ao campo de formação. A fase exploratória confirmou hipótese sobre demanda discente por apoio às suas ideias. A fase principal da pesquisa apontou para um descompasso entre a intenção de participação por parte dos estudantes e efetiva participação destes na ação. Entretanto, apesar da queda da presença discente ao longo do projeto, a proposta obteve representativa adesão de docentes e discentes, numa participação mais qualitativa, que entre outros resultados orientou o grupo para a criação de um empreendimento acadêmico. Um novo cenário de aprendizagem concretizou-se na instituição em 2013, com o desenvolvimento da Solução Empresa Junior de Consultoria, liderada por estudantes dos cursos do Centro de Ciências e Tecnologia.

  13. Estudo de cenários para o gerenciamento dos resíduos sólidos urbanos de Curitiba Scenario studies for the management of urban solid waste in Curitiba

    Directory of Open Access Journals (Sweden)

    Lucas Araújo de Melo

    2009-12-01

    Full Text Available Na cidade de Curitiba, a discussão relacionada aos resíduos sólidos tem se ampliado nos meios popular, acadêmico e político devido às dificuldades de se encontrarem formas de tratamento e destinação que possam substituir a atual disposição no aterro sanitário da Caximba. A técnica de cenários tem sido utilizada em diversas áreas como ferramenta do planejamento estratégico, e foi empregada neste artigo com o objetivo de auxiliar o planejamento da gestão de resíduos sólidos urbanos (RSU em Curitiba. São apresentados dados sobre geração, caracterização e gerenciamento atual dos RSU, bem como dados socioeconômicos de seus habitantes. A caracterização dos resíduos sólidos urbanos em Curitiba indica uma geração de 0,6 kg.hab-1.dia-1, valor considerado baixo em relação à média Brasileira. No entanto, a composição de resíduos recicláveis é de 40% do total destinado ao aterro sanitário. Uma metodologia para a simulação de cenários futuros da produção de RSU em Curitiba foi desenvolvida, e alguns exemplos de prováveis cenários foram construídos e comparados com o intuito de demonstrar uma aplicação da técnica, assim como de contribuir para o gerenciamento dos resíduos sólidos de Curitiba e para o desenvolvimento de estratégias e políticas de gestão. Dentre os cenários simulados para o período de 2008-2020, destaca-se que, para uma redução de 20% do material reciclável, uma economia de R$ 2.410.000,00 e uma redução de 535.00 ton de resíduos sólidos podem ser alcançadas em relação ao cenário atual ("do nothing".In Curitiba, the discussion on solid waste has increased at the popular, academic and political spheres due to the difficulties on finding ways of treatment and disposals to replace the current waste disposition at the Caximba sanitary landfill. The scenarios technique has been used in many areas as a tool for strategic planning. This article brings a characterization of municipal

  14. Simulação do desenvolvimento da batata cultivar asterix em cinco cenários de mudanças climáticas em Santa Maria, RS Simulation of potato cultivar asterix development under five climate change scenarios in Santa Maria

    OpenAIRE

    Nereu Augusto Streck; Isabel Lago; Cleber Maus Alberto; Dilson Antônio Bisognin

    2006-01-01

    Em estudos do impacto de mudanças climáticas sobre agroecossistemas, um aspecto importante a quantificar é o efeito do aquecimento global sobre o desenvolvimento vegetal. O objetivo desse trabalho foi simular o impacto de cenários climáticos de aumento de temperatura do ar no desenvolvimento da batata (Solanum tuberosum L.), em Santa Maria, (RS). Cenários meteorológicos de mudanças climáticas (+2 °C, +3 °C, +4 °C, +5 °C e +6 °C) para os próximos cem anos foram gerados com ...

  15. Estudo de cenários para o gerenciamento dos resíduos sólidos urbanos de Curitiba Scenario studies for the management of urban solid waste in Curitiba

    OpenAIRE

    Lucas Araújo de Melo; Klaus Dieter Sautter; Paulo Roberto Janissek

    2009-01-01

    Na cidade de Curitiba, a discussão relacionada aos resíduos sólidos tem se ampliado nos meios popular, acadêmico e político devido às dificuldades de se encontrarem formas de tratamento e destinação que possam substituir a atual disposição no aterro sanitário da Caximba. A técnica de cenários tem sido utilizada em diversas áreas como ferramenta do planejamento estratégico, e foi empregada neste artigo com o objetivo de auxiliar o planejamento da gestão de resíduos sólidos urbanos (RSU) em Cur...

  16. O palácio e o templo: cenários fundamentais de produção ideológica na cidade e espaços de ritualização

    OpenAIRE

    Caramelo, Francisco

    1998-01-01

    Alguns dos salmos bíblicos reflectem uma ideologia real característica do período monárquico. Jemsalém, a capital do reino de Judá após a morte de Salomão, monopolizava a produção ideológica, sobretudo nos círculos próximos da corte. Os salmos reais, produzidos neste ambiente, traduzem, para além do seu incontestável interesse poético e literário, um corpo de idéias que vai de encontro à concepção oficial de realeza e de poder. O Palácio deve ter constituído um cenário pr...

  17. Estabelecimento de um plano de manutenção baseado em análises quantitativas no contexto da MCC em um cenário de produção JIT

    Directory of Open Access Journals (Sweden)

    Angélica Alebrant Mendes

    2014-09-01

    Full Text Available Este artigo apresenta um método para desenvolver análises quantitativas que orientem a revisão ou elaboração de um plano de manutenção de equipamentos em um cenário de produção just in time. O método proposto contempla: i Identificar os conjuntos que influenciam a confiabilidade; ii Levantar taxas de falhas; iii Classificar os conjuntos quanto ao efeito de suas falhas; iv Levantar parâmetros de demanda da linha; v Identificar as distribuições de probabilidade da demanda da linha e dos tempos de bom funcionamento e tempos de reparo dos conjuntos; vi Simular a produção/manutenção utilizando o método de Monte Carlo; vii Realizar uma análise de sensibilidade a eventuais variações na demanda, MTBF e MTTR; e viii Estabelecer a estratégia de manutenção e intervalos entre manutenções preventivas. A aplicação do método é ilustrada através de um estudo real realizado em uma linha de rotulagem e enchimento de galões de uma empresa do setor de tintas e corantes. A aplicação do método permitiu identificar com clareza os conjuntos e subconjuntos críticos frente ao cenário produtivo em questão.

  18. On Cen Chunxuan' s Being Abondoned by the Empress Dowager Tz'u- hsi' and Its Impact on New Politics of Late Qing Dynasty%浅论丁未年慈禧对岑春煊的疏弃对清末新政的影响

    Institute of Scientific and Technical Information of China (English)

    谢晓博

    2012-01-01

    庚子西狩,岑春煊勤王有功,慈禧恩之。迨新政开启,封疆大吏岑春煊以近代功成登上地方官僚之翘楚,有资抗衡北洋袁世凯,史有“南岑北袁”之说。丁未年,岑春煊骤然北上,扛起清流大旗与京师奕、袁白热会战。却走上了党同伐异的死路,终以岑瞿开缺结束。台后之慈禧坐视政争,借力打力,致使丁未两党元气大伤,实无胜家。端详丁未四月间,慈禧对待岑春煊态度由亲到疏的转变,看似受人挑唆,实则事发多端,有深刻因由值得细呷。%Cen Chunxuan who was dutiful to the throne surpported greatly in the "West Hunting" of Qing Royalty in 1900, hence was cherished by the Empress Dowager Tz' u -hsi. Unitil the advent of new policy, Cen Chunxuan had performed an extraordinarily important role in the provincial political stage as the first- rank governer, and was compe- tent enough to balance the power of Yuan Shikai the governer of Beiyang Army. Given the reasons, in Chinese history, Cen chunxuan and Yuan Shikai have been tided as "Cen of the South, Yuan of the North". in 1907, Cen Chunxuan' s sudden northern marching in the name of Qingliu Party started furious fight with Yi Kuang and Yuan Shikai, however, the fight was ended in the firements of both Cen and Zhai due to the eliquing. The Empress Dowager Tz' u - hsi' s seem- ingly calm backstage watching actually made this lose -lose consequence, as we say, wars without winner. Through in- vestigating the changing attitude of the Empress Dowager Tz' u - hsi to Cen Chunxuan, the author finds out that instead of simple instigation between the two, many complicated details deserve meditation.

  19. Balanço contábil das nações: reflexões sobre os cenários de mudanças climáticas globais

    Directory of Open Access Journals (Sweden)

    José Roberto Kassai

    2012-01-01

    Full Text Available O objetivo deste trabalho é elaborar o balanço patrimonial de países com base nos cenários de mudanças climáticas e de aquecimento global apontados pelo Intergovernamental Panel on Climate Change (IPCC, da Organização das Nações Unidas (ONU. O estudo leva em consideração o estoque de recursos florestais e o saldo residual entre as emissões e capturas de carbono ou Greenhouse gas (GHG estimadas para cada país, em 2020 e em 2050, de acordo com os relatórios Special Report on Emission Scenarios (SRES A1B1 e A2B2. A pesquisa foi conduzida de forma multidisciplinar, envolvendo conceitos das áreas de biologia das mudanças climáticas, de energia, de geociência, de economia e da contabilidade. Esta última que foi utilizada para delimitar o objeto da pesquisa e servir de método, por meio da técnica Inquired Balance Sheet, para mensuração e classificação dos ativos, dos passivos e dos patrimônios líquidos ambientais. Selecionou-se uma amostra de sete países representantes do BRIC (Brasil, Rússia, Índia e China e de países desenvolvidos da América, Europa e Ásia (EUA, Alemanha e Japão. Os balanços contábeis de cada país foram avaliados em unidades equivalentes de produto interno bruto (PIB, ajustados pelo consumo de energia per capita em toneladas equivalente de petróleo (TEP e em mega toneladas de carbono (MtonC, precificadas pelo custo (US$ de captura de carbono sugeridos pela ONU. Os resultados da pesquisa mostram que os países desenvolvidos estão consumindo recursos de outras nações e de gerações futuras e, apesar de Brasil e Rússia apresentarem superávits ambientais, o balanço consolidado do planeta no cenário de 2050 aponta para uma situação deficitária ou falimentar, com "passivo a descoberto" ou patrimônio líquido negativo equivalente a US$ 2,3 mil anuais para cada um dos atuais 6,6 bilhões de habitantes (2008 e um passivo ambiental equivalente a um quarto do PIB mundial. Este relatório cont

  20. Aplicando o cenário de desenvolvimento de produtos em um caso prático de capacitação profissional Applying the product development scenario in a practical case of professional capacitation

    Directory of Open Access Journals (Sweden)

    Ana Paula Freitas Mundim

    2002-04-01

    Full Text Available A vantagem competitiva de uma empresa de manufatura em uma economia globalizada está diretamente relacionada com sua capacidade de introduzir novos produtos no mercado, garantindo linhas de produtos atualizadas tecnologicamente e com características de desempenho, custo e distribuição condizentes com o atual nível de exigência dos consumidores. Contudo, uma grande dificuldade do gerenciamento integrado do processo de desenvolvimento de produtos é a existência de poucos profissionais capacitados a atuar eficientemente nesse processo de negócio caracterizado como multifuncional. Ou seja, profissionais possuidores de uma visão ampla e integrada deste processo. Uma forma de auxiliar esta capacitação profissional baseia-se na utilização de uma nova abordagem de aprendizagem caracterizada pela didática ativa, denominada cenário. Tal abordagem é suportada por modelos de referência, a partir dos quais se pode obter os conhecimentos necessários à execução do processo de negócio. Neste contexto, este artigo tem como objetivo abordar a questão da capacitação profissional relacionada ao desenvolvimento de produtos, empregando a abordagem de cenário. O artigo não só apresenta a caracterização do processo de desenvolvimento de produtos e seus requisitos para capacitação, como também descreve um caso prático de capacitação profissional realizado em uma empresa multinacional no Brasil, utilizando a abordagem de cenário e o método científico da pesquisa-ação.The competitive advantage of a manufacturing enterprise in a global economy is directly related to its capacity to introduce new products on the market, guaranteeing technological actualised product lines, with characteristics of quality, cost and time according to actual clients exigency. However, a great difficulty of the integrated management of product development is the existence of few professionals capacitated to act efficiently in this business process

  1. Cenários de mudanças climáticas e seus impactos na produção leiteira em estados nordestinos Climate change scenarios and their impacts on milk production in northeastern states of Brazil

    Directory of Open Access Journals (Sweden)

    Thieres G. F. da Silva

    2010-01-01

    Full Text Available A pecuária leiteira é uma atividade de grande importância no nordeste brasileiro, podendo ser afetada de forma direta e indireta, caso as atuais previsões climáticas sejam confirmadas até o final do século. O objetivo deste trabalho foi estimar os impactos das mudanças climáticas sobre a produção leiteira nos estados de Alagoas, Bahia e Sergipe. Os valores do índice de temperatura e umidade (ITU, do declínio da produção de leite (DPL e da redução do consumo alimentar (RCA de vacas leiteiras foram calculados para os cenários climáticos B1 e A1F1 do IPCC. Utilizou-se um modelo multiplicativo para estimar o efeito das alterações de temperatura sobre os valores normais da umidade relativa do ar. Com base em ambos os cenários do IPCC, as regiões produtoras, situadas no norte e litoral do estado da Bahia e áreas litorâneas dos estados de Alagoas e Sergipe, serão afetadas expressivamente em decorrência do aumento do estresse térmico, com reduções marcantes na produção de leite e no consumo alimentar, especialmente de animais com alto potencial genético de produção. Este cenário pode afetar as atuais regiões produtoras dos estados nordestinos, de forma que a exploração leiteira seja limitada aos animais com baixo desempenho produtivo.Milk production is an activity of great importance in the Brazilian context, and it may be directly and indirectly affected if current climate predictions are confirmed until the end of this century. The objective of this work was to estimate climate change impacts on milk production in the states of Alagoas, Bahia and Sergipe. Values of the temperature humidity index (THI, decline in milk production (DMP and decline in feed intake (DFI of dairy cows were calculated for the B1 and A1F1 climate scenarios, described by the IPCC. A multiplicative model was used to estimate the effect of temperature change on the normal values of relative humidity. Based on both IPCC scenarios, production

  2. A gene-protein assay for human epidermal growth factor receptor 2 (HER2: brightfield tricolor visualization of HER2 protein, the HER2 gene, and chromosome 17 centromere (CEN17 in formalin-fixed, paraffin-embedded breast cancer tissue sections

    Directory of Open Access Journals (Sweden)

    Nitta Hiroaki

    2012-05-01

    Full Text Available Abstract Background The eligibility of breast cancer patients for human epidermal growth factor receptor 2 (HER2-directed therapies is determined by the HER2 gene amplification and/or HER2 protein overexpression status of the breast tumor as determined by in situ hybridization (ISH or immunohistochemistry (IHC, respectively. Our objective was to combine the US Food and Drug Administration (FDA-approved HER2 & chromosome 17 centromere (CEN17 brightfield ISH (BISH and HER2 IHC assays into a single automated HER2 gene-protein assay allowing simultaneous detection of all three targets in a single tissue section. Methods The HER2 gene-protein assay was optimized using formalin-fixed, paraffin-embedded (FFPE samples of the xenograft tumors MCF7 [HER2 negative (non-amplified gene, protein negative] and Calu-3 [HER2 positive (amplified gene, protein positive]. HER2 IHC was performed using a rabbit monoclonal anti-HER2 antibody (clone 4B5 and a conventional 3,3'-diaminobenzidine IHC detection. The HER2 & CEN17 BISH signals were visualized using horseradish peroxidase-based silver and alkaline phosphatase-based red detection systems, respectively with a cocktail of 2,4-dinitrophenyl-labeled HER2 and digoxigenin-labeled CEN17 probes. The performance of the gene-protein assay on tissue microarray slides containing 189 randomly selected FFPE clinical breast cancer tissue cores was compared to that of the separate HER2 IHC and HER2 & CEN17 BISH assays. Results HER2 protein detection was optimal when the HER2 IHC protocol was used before (rather than after the BISH protocol. The sequential use of HER2 IHC and HER2 & CEN17 BISH detection steps on FFPE xenograft tumor sections appropriately co-localized the HER2 protein, HER2 gene, and CEN17 signals after mitigating the silver background staining by using a naphthol phosphate-containing hybridization buffer for the hybridization step. The HER2 protein and HER2 gene status obtained using the multiplex HER2 gene

  3. SIMGERE: software para avaliação de cenários de gestão integrada de resíduos sólidos domiciliares SIMGERE: software to assess scenarios of integrated household solid waste management

    Directory of Open Access Journals (Sweden)

    Luciana Miyoko Massukado

    2006-06-01

    Full Text Available Este artigo apresenta o desenvolvimento de um sistema de apoio à decisão como ferramenta para analisar diferentes cenários de gestão integrada de resíduos sólidos domiciliares. O SIMGERE, nome do software, foi desenvolvido para auxiliar as Administrações Públicas Municipais na gestão dos resíduos sólidos domiciliares por meio da simulação de cenários, mostrando os efeitos que poderão ocorrer a partir de possíveis mudanças nas estratégias da gestão. Para tanto, foi definido e delimitado o campo de trabalho do sistema de apoio à decisão seguindo-se para a construção do modelo conceitual com base no conhecimento adquirido na literatura pertinente, para depois traduzi-lo em telas de ação e fluxogramas de decisão. Terminados estes procedimentos iniciou-se a codificação do modelo em linguagem de programação (Delphi 6.0. Paralelamente foram realizados testes de validação do sistema quanto a usabilidade e coerência, sendo os erros ajustados. Finalmente, foram gerados os arquivos executáveis do sistema para sua instalação e posterior disponibilização.This paper presents a development of decision support system tool to analyze household solid waste management scenarios. SIMGERE, software's name, was developed to aid Municipal Administration in the management of their household solid waste through the simulation of scenarios, showing the effects that can happen if some targets were changed in the management. The development of the method consisted in defining and delimiting the work field of decision support system, followed by the construction of a conceptual model based on the acquired knowledge. The model was then translated in action screens and decision workflows, which were programmed in Delphi 6.0. At the same time tests of system validation were accomplished in two ways - first on program's usability and second on the coherence of results, being the adjusted mistakes. Finally, the executable files of the

  4. Ground-state and isomeric-state cross sections for the {sup 138}Ce(n,2n){sup 137}Ce reaction from its threshold to 20 MeV

    Energy Technology Data Exchange (ETDEWEB)

    Luo, Junhua [Hexi Univ., Zhangye (China). Inst. of Theoretical Physics; Hexi Univ., Zhangye (China). School of Physics and Electromechanical Engineering; An, Li; Jiang, Li [Chinese Academy of Engineering Physics, Mianyang (China). Inst. of Nuclear Physics and Chemistry

    2015-07-01

    The cross sections of the {sup 138}Ce(n,2n){sup 137}Ce reactions and their isomeric cross section ratios σ{sub m}/σ{sub g} were measured at three neutron energies between 13.5 and 14.8 MeV using the activation technique. CeO{sub 2} samples and Nb monitor foils were activated together to determine the reaction cross section and the incident neutron flux. The monoenergetic neutron beams were formed via the {sup 3}H(d,n){sup 4}He reaction. The activities induced in the reaction products were measured using high-resolution γ-ray spectroscopy. The pure cross section of the ground-state was derived from the absolute cross section of the metastable state and the residual nuclear decay analysis. The cross sections were also estimated using the nuclear model code, TALYS-1.6 with different level density options at neutron energies varying from the reaction threshold to 20 MeV. Results are discussed and compared with the corresponding literature data.

  5. SMED Analýza výrobní linky a návrhy na zlepšení pro zkrácení časů přestaveb

    OpenAIRE

    Šrom, Jan

    2015-01-01

    Bakalářská práce se zabývá analýzou výrobní linky a návrhy na zlepšení pro zkrácení časů přestaveb. K realizaci tohoto úkolu byla zvolena metoda SMED (Single Minute Exchange of Dies). SMED je jednou z metod štíhlé výroby a směřuje k redukci plýtvání se zdroji ve výrobním procesu. Tato metoda zavádí rychlý a účinný přechod mezi výrobou dvou různých výrobků. Tyto rychlé přestavby jsou klíčem k redukci výrobních dávek a zlepšování toku materiálu. Bachelor thesis deals with the analysis of pro...

  6. Impacto da terapia anti-retroviral na magnitude da epidemia do HIV/AIDS no Brasil: diversos cenários Impact of antiretroviral therapy on the magnitude of the HIV/AIDS epidemic in Brazil: various scenarios

    Directory of Open Access Journals (Sweden)

    Maria Tereza S. Barbosa

    2003-04-01

    Full Text Available Neste trabalho, utilizaram-se os algoritmos EM e EMS aplicados ao método do Cálculo Retroativo para estimar a magnitude da epidemia do HIV no Brasil. Fazendo-se suposições a respeito do comportamento dos infectados, em relação à utilização da terapia combinada das drogas anti-retrovirais, construíram-se cinco cenários para a epidemia brasileira. O objetivo foi o de ilustrar os impactos que a utilização da terapia combinada das drogas anti-retrovirais possam estar tendo ou possam vir a ter na incubação do vírus e, por conseguinte, nas avaliações da epidemia realizadas a partir dos casos de Aids notificados.We applied the back-calculation method to estimate the magnitude of the HIV epidemic in Brazil, using the EM and EMS algorithms. Under certain assumptions regarding the behavior of infected patients towards combined antiretroviral therapy, we discuss five different scenarios applied to the Brazilian epidemic. Our objective was to illustrate the impact of combined antiretroviral treatment on the incubation period and thus on estimates of the size of the HIV-infected population, based on reported AIDS cases.

  7. Srovnání cen rodinného domu v různých částech Českých Budějovic v letech 2015 a 2016

    OpenAIRE

    Sauer, Nick

    2016-01-01

    Diplomová práce „ Srovnání cen rodinného domu v různých částech Českých Budějovic v letech 2015 a 2016” se zabývá oceněním rodinného domu cenou obvyklou a cenou zjištěnou v letech 2015 a 2016. Rodinný dům se nachází v okrajové částí města a následně bude přemístěn do centra města. Cena obvyklá je určena porovnáním, přičemž porovnání je prováděno s obdobnými rodinnými domy nabízenými k prodeji v realitní inzerci. Cena zjištěná bude pro rok 2015 vypočtena pomocí oceňovací vyhlášky č. 441/2013 S...

  8. Coronal density diagnostics with Helium-like triplets CHANDRA--LETGS observations of Algol, Capella, Procyon, Eps Eri, Alpha Cen A&B, UX Ari, AD Leo, YY Gem, and HR1099

    CERN Document Server

    Ness, J U; Burwitz, V; Mewe, R; Raassen, A J J; Van der Meer, R L J; Predehl, P; Brinkman, A C

    2002-01-01

    We present an analysis of ten cool stars (Algol, Capella, Procyon, Eps Eri, Alpha Cen A&B, UX Ari, AD Leo, YY Gem, and HR1099) observed with the Low Energy Transmission Grating Spectrometer (LETGS) on board the Chandra X-ray Observatory. This sample contains all cools stars observed with the LETGS presently available to us with integration times sufficiently long to warrant a meaningful spectral analysis. Our sample comprises inactive, moderately active, and hyperactive stars and samples the bulk part of activity levels encountered in coronal X-ray sources. We use the LETGS spectra to carry out density and temperature diagnostics with an emphasis on the H-like and the He-like ions. We find a correlation between line flux ratios of the Lyman-Alpha and He-like resonance lines with the mean X-ray surface flux. We determine densities using the He-like triplets. For active stars we find no significant deviations from the low-density limit for the ions of Ne, Mg, and Si, while the measured line ratios for the i...

  9. Impactos das mudanças climáticas na produção leiteira do estado de Pernambuco: análise para os cenários B2 e A2 do IPCC Impacts of the climate change on regional variation of milk production in the Pernambuco state, Brazil: analysis for the B2 and A2 IPCC scenarios

    OpenAIRE

    Thieres G. F. da Silva; Magna S. B. de Moura; Ivan I. S. Sá; Sérgio Zolnier; Sílvia H. N. Turco; Flávio Justino; José F. A. Do Carmo; Luciana S. B. de Souza

    2009-01-01

    A partir das informações dos cenários B2 e A2 propostos pelo IPCC (Painel Intergovernamental sobre Mudanças Climáticas) foram avaliados os possíveis impactos das mudanças climáticas sobre a produção leiteira do Estado de Pernambuco. Para tal fim, foram calculados os valores do índice de temperatura e umidade (ITU), considerando os cenários de temperatura e umidade relativa. Em seguida, foram estimados os dados de declínio da produção de leite (DPL) para três níveis de produção (10, 20 e 30 kg...

  10. Simulação de cenários alternativos de uso da terra em uma microbacia utilizando técnicas de modelagem e geoprocessamento Alternative scenario simulation of land use in a watershed through geoprocessing and modeling techniques

    Directory of Open Access Journals (Sweden)

    R. E. Machado

    2003-08-01

    Full Text Available O modelo SWAT (Soil and Water Assessment Tool foi aplicado na simulação de cenários alternativos de uso da terra na microbacia hidrográfica do Ribeirão dos Marins, em Piracicaba (SP, no biênio 1999/2000. Dois cenários foram simulados. No primeiro, o uso atual foi mantido numa faixa de mata ciliar de 30 m em toda a extensão dos cursos d'água e de 50 m ao redor das nascentes, de acordo com o Código Florestal. No segundo cenário, como as pastagens ocupavam 30,9 % da área da microbacia, nas encostas mais íngremes, com alto potencial erosivo, as áreas de pastagem foram substituídas por vegetação florestal. As simulações dos dois cenários foram comparadas com as condições do cenário atual em termos de produção de sedimentos. Os cenários geraram diferentes padrões espaciais da produção de sedimentos. Uma redução de 94,0 % na produção de sedimentos foi obtida com a substituição da pastagem por vegetação nativa (cenário 2. No cenário 1, a redução foi de 10,8 %. Esses resultados evidenciam a necessidade de tratar a paisagem em bacias hidrográficas de forma global, identificando as "áreas sensíveis ambientalmente", onde são necessárias práticas de controle dos processos erosivos e não somente práticas de proteção dispensada aos cursos d'água por meio da mata ciliar.The model SWAT (Soil and Water Assessment Tool was used to simulate alternative scenarios of land use in Ribeirão dos Marins watershed, in Piracicaba, State of São Paulo, Brazil, for the biennial period 1999/2000. Two scenarios were simulated. The first one (scenario 1 was based on the current land use except for the introduction of a continuous riparian buffer of 30 m along the drainage network and of 50 m around the springs, in accordance to Brazil's environmental legislation. In the second (scenario 2 the steepest slopes (30.9 % of the watershed area with high erosive potential, covered by pasture, were substituted by native forest. The

  11. Flexible scope for ISO 15189 accreditation: a guidance prepared by the European Federation of Clinical Chemistry and Laboratory Medicine (EFLM) Working Group Accreditation and ISO/CEN standards (WG-A/ISO).

    Science.gov (United States)

    Thelen, Marc H M; Vanstapel, Florent J L A; Kroupis, Christos; Vukasovic, Ines; Boursier, Guilaime; Barrett, Edward; Bernabeu Andreu, Francisco; Brguljan, Pika Meško; Brugnoni, Duilio; Lohmander, Maria; Sprongl, Ludek; Vodnik, Tatjana; Ghita, Irina; Vaubourdolle, Michel; Huisman, Willem

    2015-07-01

    The recent revision of ISO15189 has further strengthened its position as the standard for accreditation for medical laboratories. Both for laboratories and their customers it is important that the scope of such accreditation is clear. Therefore the European co-operation for accreditation (EA) demands that the national bodies responsible for accreditation describe the scope of every laboratory accreditation in a way that leaves no room for doubt about the range of competence of the particular laboratories. According to EA recommendations scopes may be fixed, mentioning every single test that is part of the accreditation, or flexible, mentioning all combinations of medical field, examination type and materials for which the laboratory is competent. Up to now national accreditation bodies perpetuate use of fixed scopes, partly by inertia, partly out of fear that a too flexible scope may lead to over-valuation of the competence of laboratories, most countries only use fixed scopes. The EA however promotes use of flexible scopes, since this allows for more readily innovation, which contributes to quality in laboratory medicine. In this position paper, the Working Group Accreditation and ISO/CEN Standards belonging to the Quality and Regulation Committee of the EFLM recommends using an approach that has led to successful introduction of the flexible scope for ISO15189 accreditation as intended in EA-4/17 in The Netherlands. The approach is risk-based, discipline and competence-based, and focuses on defining a uniform terminology transferable across the borders of scientific disciplines, laboratories and countries. PMID:26055950

  12. Census 2000 Places (cen00pl02)

    Data.gov (United States)

    California Department of Resources — Census 2000 Place Names provides a seamless statewide GIS layer of places, including census designated places (CDP), consolidated cities, and incorporated places,...

  13. Superconducting magnet activities at CEN Saclay

    International Nuclear Information System (INIS)

    The activities in superconducting magnets at DPhPE/Saclay spread over a wide range from DC magnets mainly for particle and nuclear physics and also for other fields of research, pulsed magnets for particle accelerators and for a controlled fusion tokamak machine. The superconducting magnets designed during recent years involve a variety of conductor types, winding schemes, materials and cooling modes, including the use of superfluid helium. (author)

  14. Psicologia escolar: cenários atuais

    Directory of Open Access Journals (Sweden)

    Cynthia Bisinoto Evangelista de Oliveira

    2009-12-01

    Full Text Available A articulação da Psicologia com a Educação oportunizou a emergência do psicólogo escolar, profissional que por muito tempo se caracterizou por classificar e ajustar, à escola, os alunos com dificuldades escolares, aplicando o conhecimento psicológico ao contexto escolar. A partir de avanços teóricos e práticos relativos à Psicologia e de uma postura crítica diante da atuação da área nas escolas, a relação Psicologia-Educação se modificou, configurando-se por interdependência de conhecimentos. Nesta nova configuração, a Psicologia Escolar passou a valorizar as relações e o contexto histórico no qual as dificuldades se instalam e, atualmente, caracteriza-se por uma atuação preventiva e relacional que valoriza a participação do professor e o cuidado com sua saúde psíquica. A Psicologia Escolar tem, hoje, o desafio de ampliar seu campo de atuação para outros contextos e níveis educativos e sistematizar ações diferenciadas que promovam o desenvolvimento e a aprendizagem dos envolvidos no cotidiano escolar.

  15. Arquitectura como cenário urbano

    OpenAIRE

    Pinheiro, Micael Rodrigo Vieira

    2015-01-01

    the walls are well consolidated, and the paths and main roads are well defined. With the evolution of time, the city was changing to the needs of the inhabitants, being this in a natural way, giving time for the changes to take place. The city was occupying the places inside the medieval walls, because this was the place more protected against exterior attacks. Despite this construction logic, there were some buildings outside the walls, small constructions that marked the beginning of the ur...

  16. A parentalidade homossexual: uma exposição do debate psicanalítico no cenário francês atual The homosexual parenthood: an exposition of the psychoanalytical debate in the contemporary French scenario

    Directory of Open Access Journals (Sweden)

    Simone Perelson

    2006-12-01

    Full Text Available Após situar a homoparentalidade no contexto das novas práticas sociais e médicas referentes à filiação e à reprodução, o artigo apresenta um cenário do debate francês atual sobre essa questão. Serão nele confrontados os pensamentos de cinco psicanalistas: Joël Dor, e sua teorização sobre o papel da função paterna e da diferença anatômica entre os sexos na estruturação do sujeito; Pierre Legendre, e sua articulação entre os campos do jurídico e do psíquico na inscrição do ser humano na ordem da filiação; Michel Tort, e sua crítica às teorias de Legendre; Geneviève Delaisi de Parseval, e sua proposta de uma definição mais ampla da família; e, enfim, Sabine Prokhoris, e a sua distinção entre 'sexuação' e 'diferença dos sexos'. Através dessa apresentação, buscar-se-á desmontar os argumentos contrários e indicar a legitimidade da argumentação favorável à filiação homossexual.After situating homoparenthood within the context of the new social and medical practices concerning parenthood and reproduction, the article presents a scenario of the contemporary French debate on this issue. The thinking of five psychoanalysts on this matter will be broached : Joël Dor and his theory about the role of the function of the father and about the anatomic difference between sexes in the structure process of the subject; Pierre Legendre and his articulation between the fields of law and the psych in the involvement of the human being in the order of parenthood; Michel Tort and his criticism of the theories of that author; and Genevieve Delaisi de Parseval and her proposal of a broader definition of the family. And, finally, Sabine Prokhoris, and her distinction between "sexuation" and "difference of the sexes". This presentation intends to dismantle the opposite arguments and demonstrates the legitimacy of the reasoning favorable to homosexual parenthood.

  17. Limites e possibilidades para a efetivação da integralidade na atenção à saúde: o Cenário de Ensino em questão

    Directory of Open Access Journals (Sweden)

    Deborah Varjabedian

    2015-12-01

    Full Text Available Introdução: A atuação do fisioterapeuta ainda é voltada para o tratamento dos distúrbios cinéticos funcionais em órgãos e sistemas do corpo humano, privilegiando a atenção secundária e terciária à saúde. Deseja‑se, no entanto, alcançar no processo de formação, o perfil manifesto no ideário que norteia os princípios da integralidade, que enfatiza a importância da atenção primária. Apesar das mudanças curriculares experimentadas na formação superior em Fisioterapia, organizadas de forma integrada e apoiadas na interdisciplinaridade, percebe‑se que o conceito de integralidade não é reproduzido e incorporado de forma efetiva, desde o início da graduação até o momento do estágio prático na clínica/escola da Universidade. Objetivos: Verificar se as propostas presentes na concepção do cenário de ensino foram efetivadas de acordo com as premissas de integralidade de atenção à saúde. Métodos: Na tentativa de buscar respostas para tais questionamentos, foram analisados os documentos diretivos da instituição de ensino – Projeto de Desenvolvimento Institucional (PDI, Projeto Pedagógico Institucional (PPI e o documento Centro Integrado de Saúde (CIS –, para podermos verificar se tais documentos permitem a proposição de estratégias agregadoras da integralidade na atenção à saúde. Resultados e Conclusão: Tais documentos demonstraram uma sinergia com os princípios humanos fundamentais, para com o ser, para com o aluno e para com a sociedade como um todo, agindo assim, em consonância com os preceitos da integralidade. Não significando, no entanto, que a integralidade fora utilizada como um dos pilares norteadores destes documentos.

  18. Resposta das culturas do girassol e do milho a diferentes cenários de rega deficitária Deficit irrigation as a criterion for irrigation water management with sunflower and maize crops

    Directory of Open Access Journals (Sweden)

    C. M. Toureiro

    2007-01-01

    Full Text Available Apresentam-se alguns resultados de um projecto em que se procura integrar, nos critérios de decisão sobre a oportunidade e a dotação de rega, a optimização da produtividade ambiental da água, valorizando-se maximamente a utilização desse recurso escasso. Surge assim a definição de critérios de gestão da rega em que as dotações são “deficitárias”, isto é, em que se fornece à cultura uma quantidade de água inferior à correspondente à ETc calculada. Durante as campanhas de rega de 2004 e 2005 decorreram ensaios experimentais com “rega deficitária”, em parcelas regadas do Perímetro do Divor: em 2004 avaliou-se e caracterizou-se o comportamento da cultura do girassol, sujeita a diferentes regimes hídricos, com três cenários diferentes de decisão para definir a oportunidade e dotação de rega: 1 considerando como oportunidade de rega (ponto de rega o limite inferior de gestão (ou défice de gestão permissível, tradicionalmente definido por limite do rendimento óptimo (LRO na zona da reserva facilmente utilizável do solo; 2 e 3 considerando como oportunidade de rega (ponto de rega dois limites abaixo do LRO (10 e 30%, respectivamente; em 2005 avaliou-se e caracterizou-se o comportamento da cultura do milho, sujeita a três cenários de gestão da água de rega: 1 regime óptimo de fornecimento de água igual às necessidades hídricas da cultura, traduzidas pela ETc calculada; 2 nível 1 de “rega deficitária” regime de regas 10% abaixo do valor de ETc; 3 nível 2 de “rega deficitária” regime de regas 30% abaixo do valor de ETc. Durante as fases de desenvolvimento da cultura mais sensíveis ao défice de água no solo, as três modalidades de ensaio foram regadas de igual modo (nível de fornecimento de água igual ao valor de ETc. Verificou-se um nítido potencial de economia de água proporcionável pela gestão da cultura com “rega deficitária”.Some results are presented from a project aiming

  19. Milton H. Erickson e o cavalo de tróia: a terapia não convencional no cenário da crise dos paradigmas em psicologia clínica Milton H. Erickson and the trojan horse: the nonconventional therapy in the paradigms crisis scenario in clinical psychology

    OpenAIRE

    Maurício S. Neubern

    2002-01-01

    O presente artigo busca situar a obra de Milton Erickson no cenário da transição de paradigmas científicos, particularmente da psicologia clínica. Destaca-se que as contribuições desse autor, ao mesmo tempo em que denunciam as limitações do paradigma dominante, apontam na direção de pressupostos distintos, muito afins com as perspectivas de um paradigma emergente. A metáfora do cavalo de Tróia busca retratar a influência sutil e intensa do trabalho desse autor sobre as perspectivas consagrada...

  20. Impactos das mudanças climáticas na produção leiteira do estado de Pernambuco: análise para os cenários B2 e A2 do IPCC Impacts of the climate change on regional variation of milk production in the Pernambuco state, Brazil: analysis for the B2 and A2 IPCC scenarios

    Directory of Open Access Journals (Sweden)

    Thieres G. F. Da Silva

    2009-12-01

    Full Text Available A partir das informações dos cenários B2 e A2 propostos pelo IPCC (Painel Intergovernamental sobre Mudanças Climáticas foram avaliados os possíveis impactos das mudanças climáticas sobre a produção leiteira do Estado de Pernambuco. Para tal fim, foram calculados os valores do índice de temperatura e umidade (ITU, considerando os cenários de temperatura e umidade relativa. Em seguida, foram estimados os dados de declínio da produção de leite (DPL para três níveis de produção (10, 20 e 30 kg animal-1dia-1 e os valores de redução do consumo alimentar (RCA. Verificou-se que os cenários de mudanças climáticas promoveram alterações expressivas nas áreas com possibilidades de criação de vacas leiteiras, inclusive para as principais mesorregiões produtoras do Estado (Garanhuns, Vale do Ipanema e do Ipojuca. Os resultados obtidos auxiliarão produtores e governo na avaliação da vulnerabilidade do sistema de produção, bem como na elaboração de ações de mitigação e de adaptação da pecuária leiteira do Estado de Pernambuco frente aos cenários de mudanças climáticas.Based upon climate projections provided by the B2 and A2 IPCC (Intergovernmental Panel for Climate Change scenarios, the impacts of climate change on regional milk production in the Pernambuco State have been evaluated. Thus, the values of the temperature and humidity indexes (THI have been computed considering the temperature and relative humidity modelling projections. Afterwards, the milk production decline (MPD has been estimated for three production levels (10, 20 e 30 kg animal -1day-1. The values of the feed intake reduction (FIR were also calculated. It has been demonstrated that climate change as projected by the A2 and B2 scenarios leads to substantial modifications in the present day areas suitable for livestock, particularly at the main Pernambuco production regions (Garanhuns, Ipanema and Ipojuca Valley. The results may, therefore, help

  1. A Representação do Cenário no Novo Romance Histórico Brasileiro ‒ Uma Leitura dos Romances A República dos Bugres e Conspiração Barroca, de Ruy Reis Tapioca

    OpenAIRE

    Oliveira, Cristiano Mello

    2016-01-01

    A representação do cenário no Novo Romance Histórico brasileiro tem despertado pouco interesse na crítica literária. A morfologia urbana composta por casas, casarões, palácios, castelos, igrejas, pontes, logradouros, meios de transporte e cidades é caracterizada e descrita conforme o contexto de época. Muitos escritores analisam compêndios históricos, documentos de época, arquivos, museus, numa tentativa de representar ou (re)criar o pano de fundo dos enredos históricos formulados. Os romance...

  2. Agente Comunitário de Saúde: um novo ator no cenário da saúde do Brasil Community Health Agent: a new actor in the Brazilian health scenario

    Directory of Open Access Journals (Sweden)

    Andréa Sabino Filgueiras

    2011-01-01

    Full Text Available O Programa de Agentes Comunitários de Saúde (PACS foi introduzido no Brasil em 1991 como uma tática para o desenvolvimento de atividades relacionadas à prevenção de doenças e educação em saúde. Em 1994, o Ministério da Saúde propôs o Programa de Saúde da Família (PSF como estratégia de reestruturação da atenção à saúde. Essas propostas introduzem, no cenário da saúde, um novo ator, o Agente Comunitário de Saúde (ACS, desempenhando importante papel na atenção básica, ao agir como um elo entre famílias, usuários e serviço de saúde. O estudo toma como objeto o trabalho desenvolvido pelos ACS em uma unidade do PSF do município de Volta Redonda-RJ. Tem como objetivo discutir os aspectos facilitadores e limitantes das atividades designadas aos ACS. Trata-se de uma pesquisa do tipo descritiva, com abordagem qualitativa. A análise de dados se deu por categorias analíticas, que emergiram a partir dos dados encontrados nas entrevistas. Após a apreciação dos dados, pôde-se constatar que os ACS do PSF de Volta Redonda ainda não recebem formação destinada à execução de suas atividades e que consideram a experiência prática como o principal motor para o desempenho delas. O trabalho em equipe é reconhecido como espaço de circulação de saberes científicos e o saber popular como mediador entre a equipe e a população. Os ACS têm como eixo de trabalho a visita domiciliar, focada principalmente na doença.The Community Health Agents Program (PACS was created in 1991 as a strategy to implement the SUS, developing activities related to prevention and health education. In 1994, the Health Ministry proposed the Family Health Program (PSF as a strategy for restructuring the dominant care model. With the emergence of these two programs, there is the emergence of a new actor in the health scenario, the Community Health Agent (ACS. This actor plays an important role in basic care, acting as a link between families

  3. Framework dos cenários de risco no contexto da implantação de uma refinaria de petróleo em Pernambuco Risks scenarios frameworks in the context of an oil refinery installation at Pernambuco State

    Directory of Open Access Journals (Sweden)

    Aline do Monte Gurgel

    2009-12-01

    Full Text Available A magnitude dos problemas socioambientais relacionados à urbanização, industrialização e esgotamento de recursos naturais tem impacto crescente sobre a saúde e o ambiente. Paradoxalmente, os padrões de consumo demandam a ampliação da produção industrial, baseada na exploração de recursos não renováveis, cujos riscos tecnológicos, particularmente os da indústria petroquímica, impõem dificuldades reais às medidas de controle e vigilância à saúde. O refino de petróleo é uma atividade potencialmente danosa ao ambiente e à saúde humana, particularmente aos trabalhadores. Esse estudo objetivou caracterizar os cenários de risco para a saúde ambiental decorrentes da instalação de uma refinaria de petróleo na Região Metropolitana de Recife (Pernambuco. Com base em dados secundários e referências da literatura, construiu-se uma matriz de reprodução social para contextualizar os problemas nas dimensões biológica, da consciência e conduta, econômica, política e ecológica, permitindo presumir riscos, com vista a subsidiar o desenvolvimento e a organização das ações de vigilância em saúde no Estado, articuladas intersetorialmente, com participação social, capazes de intervir sobre os riscos e evitar o adoecimento dos trabalhadores e da população nesse território.The magnitude of the environmental and social problems due to urbanization, industrialization and exhaustion of natural resources has shown an increase in the impact on health and environment. Paradoxically, the consumption patterns demand for the expansion in the industrial production based on the exploitation of the non-renewable resources, which technological risks, especially from the petrochemical industry, have put difficulties on the risk control and health surveillance. The petroleum refining is an activity potentially damageable to the environment and human health, particularly to workers. The main objective of this study was to

  4. Formulação de estratégias competitivas por meio de análise de cenários na construção civil Formulation of competitive strategies through analysis of scenarios for civil construction

    Directory of Open Access Journals (Sweden)

    Andriele Rodrigues

    2013-06-01

    Full Text Available A presente pesquisa consistiu em formular estratégias competitivas por meio de análise de cenários simulados no setor de construção civil. Trata-se de um estudo exploratório, onde o instrumento de coleta de dados foi o questionário de avaliação qualitativa, com representantes das construtoras. A técnica adotada no trabalho foi a amostragem nãoprobabilística realizada por conveniência. O método utilizado foi o modelo de simulação de cenários de Rojo (2006. Com o desenvolvimento de cenários simulados pôde-se obter condições para que as empresas da construção civil possam preparar-se antecipadamente para eventuais mudanças futuras, reduzindo suas incertezas organizacionais. Pôde-se concluir que a ferramenta de simulação de cenários utilizada é apropriada para auxiliar de forma estratégica o setor da construção civil, a simulação de cenários pode ser uma das alternativas a serem utilizadas, tanto pelo governo como pelas próprias empresas do setor. O modelo de Rojo diferencia-se dos demais roteiros de diagnóstico estratégico por buscar as variáveis diretamente com os players do setor. O setor delimitado na pesquisa teve, como resultado para a empresa em questão, formatado o planejamento estratégico de forma lógica não linear, ampliando a análise de variáveis na linha do tempo. Tal procedimento característico do modelo colabora com a precisão do processo decisório, com as devidas análises de possíveis caminhos cognitivos para a formulação de estratégia competitiva especificamente no caso da concorrência entre empresas da construção civil atuantes na mesma região.The purpose of this research was to formulate competitive strategies through simulated analysis of scenarios for the civil construction industry. The data for this explanatory study was collected by means of qualitative assessment questionnaires applied to construction company representatives. The non-probabilistic sampling technique

  5. Formulação de estratégias competitivas por meio de análise de cenários na construção civil Formulation of competitive strategies through analysis of scenarios for civil construction

    Directory of Open Access Journals (Sweden)

    Andriele Rodrigues

    2012-01-01

    Full Text Available A presente pesquisa consistiu em formular estratégias competitivas por meio de análise de cenários simulados no setor de construção civil. Trata-se de um estudo exploratório, onde o instrumento de coleta de dados foi o questionário de avaliação qualitativa, com representantes das construtoras. A técnica adotada no trabalho foi a amostragem nãoprobabilística realizada por conveniência. O método utilizado foi o modelo de simulação de cenários de Rojo (2006. Com o desenvolvimento de cenários simulados pôde-se obter condições para que as empresas da construção civil possam preparar-se antecipadamente para eventuais mudanças futuras, reduzindo suas incertezas organizacionais. Pôde-se concluir que a ferramenta de simulação de cenários utilizada é apropriada para auxiliar de forma estratégica o setor da construção civil, a simulação de cenários pode ser uma das alternativas a serem utilizadas, tanto pelo governo como pelas próprias empresas do setor. O modelo de Rojo diferencia-se dos demais roteiros de diagnóstico estratégico por buscar as variáveis diretamente com os players do setor. O setor delimitado na pesquisa teve, como resultado para a empresa em questão, formatado o planejamento estratégico de forma lógica não linear, ampliando a análise de variáveis na linha do tempo. Tal procedimento característico do modelo colabora com a precisão do processo decisório, com as devidas análises de possíveis caminhos cognitivos para a formulação de estratégia competitiva especificamente no caso da concorrência entre empresas da construção civil atuantes na mesma região.The purpose of this research was to formulate competitive strategies through simulated analysis of scenarios for the civil construction industry. The data for this explanatory study was collected by means of qualitative assessment questionnaires applied to construction company representatives. The non-probabilistic sampling technique

  6. Estudi de la contribució de CenH3ClD en la funció centromèrica. Identificació i anàlisi funcional de noves proteïnes centromèriques a Drosophila

    OpenAIRE

    Medina Giró, Sonia

    2015-01-01

    El centròmer és l’estructura cromosòmica implicada en la correcta segregació de la informació genètica durant els processos de meiosi i mitosi. La funció centromèrica està determinada epigenèticament per la presència de la variant centromèrica de la histona H3 (CenH3). Aquesta variant substitueix a la histona H3 canònica en els nucleosomes de tots els centròmers funcionals, sent fonamental la seva localització pel correcte assemblatge del cinetocor. En cèl·lules de vertebrats, els nucleosomes...

  7. Novos sujeitos no ensino médio? Reflexões acerca da subjetivação juvenil no cenário escolar contemporâneo = New subjects in high school? Reflections upon the juvenile subjectivation in the contemporary school scene

    Directory of Open Access Journals (Sweden)

    Elisete Medianeira Tomazetti

    2010-01-01

    Full Text Available No presente artigo, os autores se indagam sobre as novas formas desubjetivação juvenil engendradas no cenário contemporâneo e que têm repercutido sobre a relação dos sujeitos jovens e adolescentes com a escola de ensino médio. Privilegiou-se, como elemento de análise, a presença de novas mídias no mundo contemporâneo, as quais têm incidido significativamente na forma como alunos e alunas elaboram suas identidades e se relacionam com informações e saberes. Para tanto, perspectivas teóricas sociológicas, psicossociais e educacionais foram utilizadas, tecendo-se um cenário que apresenta dilemas e perspectivas na relação de jovens e adolescentes contemporâneos com as práticas de escolarização que ainda se presentificam nas escolas de ensino médio. Os autores concluem que a escolarização, nesta etapa do ensino, para ser efetivada, não poderá ignorar as novas configurações subjetivas desses sujeitos e as novas mídias utilizadas por eles, o que vem a gerar nova demanda educacional para atuais e futuros professores.In this paper, the authors inquire about the new forms of subjectivity engendered in the contemporary scene and which has had repercussions on the relationship of adolescents and young subjects with high school. As part of the analysis, we focused on the presence of new media in the contemporary world, which have focused significantly on how boys and girls develop their identity and relate to information and knowledge. To that end, sociological theoretical perspectives, psychosocial and educational needs were used, weaving a scenario that presents dilemmas and prospects for young people and teenagers with contemporary practices of schooling that are still present in high school. The authors conclude that for schooling, at this stage of education, to be effected, it cannot ignore the new subjective configurations of these subjects and the new media used by them, which generates new demands for education for

  8. Climate risk in maize crop in the northeastern of Brazil based on climate change scenarios Riscos climáticos para o milho no nordeste do Brasil com base em cenários de mudança do clima

    Directory of Open Access Journals (Sweden)

    Vicente de P. R. da Silva

    2012-12-01

    Full Text Available This study evaluates the impacts of climate change on the agricultural zoning of climatic risk in maize crop cultivated in the Northeastern of Brazil, based on the Intergovernmental Panel on Climate Change (IPCC reports. The water balance model, combined with geospatial technologies, was used to identify areas of the study region where the crops could suffer yield restrictions due to climate change. The data used in the study were the time series of rainfall with at least 30 years of daily data, crop coefficients, potential evapotranspiration and duration of the crop cycle. The scenarios of the increasing of air temperature used in the simulations were of 1.5ºC, 3ºC and 5ºC. The sowing date of maize crop from January to March appears to be less affected by warming scenarios than the sowing in November and December or April and May.Este estudo avalia os impactos das alterações climáticas sobre o zoneamento agrícola de risco climático do milho cultivado na região Nordeste do Brasil, com base nos relatórios do IPCC (Intergovernmental Panel on Climate Change. O modelo de balanço hídrico, combinado com técnicas de geoprocessamento, foi utilizado para identificar as áreas da região de estudo onde a cultura poderá sofrer restrições de rendimento devido à mudança do clima. Os dados utilizados no estudo foram as séries históricas de precipitação, com no mínimo 30 anos de dados diários, coeficientes de cultura, evapotranspiração potencial e a duração do ciclo da cultura. Os cenários de aumento na temperatura do ar utilizados nas simulações foram de 1,5; 3,0 e 5,0 ºC. A época de semeadura, de janeiro a março, da cultura de milho é menos afetada pelos cenários de aquecimento do que a semeadura nos meses de novembro e dezembro ou de abril e maio.

  9. Etnografia: esteatégia metodológica utilizada para contextualizar o cenário cultural do CTI de um hospital universitário Etnography: methodological strateger for contexture of a cultural background of a university hospital ICC

    Directory of Open Access Journals (Sweden)

    Marisa Antonini Ribeiro Bastos

    2001-06-01

    Full Text Available O presente trabalho é parte de um estudo etnográfico realizado em um CTI de um hospital universitário que teve o objetivo de descrever a cultura dos intensivistas. São apresentados domínios e taxonomias culturais elaborados a partir dos relatos dos intensivistas. Os resultados aqui apresentados demostraram que a etnografia é uma estratégia metodológica adequada para contextualização do cenário cultural sob o ponto de vista de quem vivencia o cotidiano do trabalho na terapia intensiva.This work is a part of an ethnographic study accomplished in a university hospital ICC that had as objective to describe the intensive care workers 'culture. It is presented cultural domains a taxonomies developed from the workers' narration The results here presented show that ethnography is a methodological strategy appropriate for a cultural background contexture from a viewpoint of those who experiment the everyday intensive care work.

  10. Simulação do desenvolvimento da batata cultivar asterix em cinco cenários de mudanças climáticas em Santa Maria, RS Simulation of potato cultivar asterix development under five climate change scenarios in Santa Maria

    Directory of Open Access Journals (Sweden)

    Nereu Augusto Streck

    2006-01-01

    Full Text Available Em estudos do impacto de mudanças climáticas sobre agroecossistemas, um aspecto importante a quantificar é o efeito do aquecimento global sobre o desenvolvimento vegetal. O objetivo desse trabalho foi simular o impacto de cenários climáticos de aumento de temperatura do ar no desenvolvimento da batata (Solanum tuberosum L., em Santa Maria, (RS. Cenários meteorológicos de mudanças climáticas (+2 °C, +3 °C, +4 °C, +5 °C e +6 °C para os próximos cem anos foram gerados com Weather Generator LARS-WG usando-se como base a série de dados meteorológicos observados de 1969 a 2003, em Santa Maria, RS. Por meio de um modelo matemático, calculou-se a taxa diária de desenvolvimento da planta e a data dos principais estágios de desenvolvimento da batata, cv. Asterix: emergência, início de tuberização, início de senescência e colheita. Foram consideradas duas épocas de cultivo da batata, o cultivo de outono (plantio em 10/2 e o cultivo de primavera (plantio em 20/7. Verificou-se, para o cultivo de outono, um grande aumento (até 42 dias no ciclo total (emergência-colheita com o aumento da temperatura do ar. Já para o cultivo de primavera, obteve-se uma tendência de um pequeno encurtamento (5-8 dias do ciclo total da batata com o aumento da temperatura média do ar, dependendo do nível de aquecimento. Fases intermediárias do desenvolvimento da batata poderão ter alterações que dependem da época de cultivo. Essas diferentes tendências no comportamento do desenvolvimento da batata refletem a complexidade da resposta dos agroecossistemas à mudança climática.In studies of the impact of climate change on agroecosystems, it is important to quantify the effect of global warming on crop development. The objective of this study was to simulate the impact of increasing air temperature scenarios on the potato (Solanum tuberosum L. development in Santa Maria, Rio Grande do Sul State. Climate change scenarios of increasing air

  11. Milton H. Erickson e o cavalo de tróia: a terapia não convencional no cenário da crise dos paradigmas em psicologia clínica Milton H. Erickson and the trojan horse: the nonconventional therapy in the paradigms crisis scenario in clinical psychology

    Directory of Open Access Journals (Sweden)

    Maurício S. Neubern

    2002-01-01

    Full Text Available O presente artigo busca situar a obra de Milton Erickson no cenário da transição de paradigmas científicos, particularmente da psicologia clínica. Destaca-se que as contribuições desse autor, ao mesmo tempo em que denunciam as limitações do paradigma dominante, apontam na direção de pressupostos distintos, muito afins com as perspectivas de um paradigma emergente. A metáfora do cavalo de Tróia busca retratar a influência sutil e intensa do trabalho desse autor sobre as perspectivas consagradas, de modo que, enquanto fascina e causa admiração, traz em si um potencial elevado de reflexão crítica e incisiva sobre essas mesmas perspectivas. Destacando três aspectos centrais desse processo - a impossibilidade teórica, o resgate da subjetividade complexa e a busca de novas racionalidades - o artigo é concluído delineando possíveis caminhos para a concepção e o uso do legado de Erickson.This article places Milton Erickson's work in the scenerio of transition of scientific paradigms, especially in clinical psychology. The text shows that Erickson' contribution denounces the limitations of the dominant paradigm and at the same time points to different assumptions that are very similar to the emergent paradigm's perspectives. The trojan horse metaphor aims at showing the powerful and subtle influence of Erickson's work on sacred perspectives. While Erickson's work cause fascination and wonder it simultaneously provoques critical and incisive reflections about the sacred perspectives. This paper makes salient three main aspects - the theorical impossibility, the rescue of a complex subjectivity and, at last, the search of new racionalities. As a conclusion, possible pathways for understanding and using Erickson's legacy in the field of clinical psychology are enphasized.

  12. Mudanças na circulação atmosférica sobre a América do Sul para cenários futuros de clima projetados pelos modelos globais do IPCC AR4 Changes in the atmospheric circulation pattern over South America in future climate scenarios derived from the IPCC AR4 model climate simulations

    Directory of Open Access Journals (Sweden)

    María C Valverde

    2010-03-01

    Full Text Available Neste trabalho são analisadas as mudanças no padrão de circulação que possam vir a acontecer no clima da América do Sul (AS, como conseqüência do aumento nas concentrações dos gases de efeito estufa. Para isto utilizam-se cinco modelos globais do IPCC AR4 (CCCMA, GFDL, HadCM3, MIROC e GISS, para o clima do século XX (1961-1990 - 20C3M e para o cenário futuro SRES_A2 (2011-2100. As características em comum que os modelos apresentaram (a exceção do MIROC para as três climatologias futuras (2011-2040, 2041-2070 e 2071-2100, principalmente, no verão e na primavera, foram o deslocamento da baixa continental (associada à baixa do Chaco para o sudoeste da sua posição climatológica (1961-1990, e da Alta da Bolívia para o noroeste. Além disso, os cinco modelos simularam, para o clima presente, uma Alta do Pacífico Sul (APS menos intensa em relação à Reanálise do NCEP, sugerindo menor subsidência sobre a sua região de atuação. Para cenários futuros os modelos GISS e HadCM3 simularam a APS menos intensa. Por outro lado, para a alta do Atlântico Sul, não existiu um consenso nos modelos. Em geral foi simulada mais intensa (a exceção do GISS, sobretudo no outono e no inverno. O modelo HadCM3 simulou a circulação de verão e primavera mais próxima à Reanálise, com uma ZCAS melhor definida, e uma área menor de anomalias negativas de chuva sobre a Amazônia, em relação aos outros modelos. Já para o cenário futuro este modelo modificou seu padrão de chuvas, e anomalias positivas, sobre a costa norte do Peru e Equador, e negativas sobre o Nordeste e leste da Amazônia, foram observadas, associadas a uma APS enfraquecida e deslocada para o sul, o que reforçou a ZCIT do Pacífico sobre 5ºS. Uma diminuição da convergência de umidade sobre a Amazônia também foi observada.In this paper changes in the atmospheric circulation that may occur in the South America (SA as a consequence of climate change were studied for

  13. Contrapontos da história da hanseníase no Brasil: cenários de estigma e confinamento Contrapuntos de la historia de la enfermedad de Hansen en Brasil: escenarios de estigma y confinamiento Counterpoints in the history of Hansen's disease in Brazil: situations of stigma and seclusion

    Directory of Open Access Journals (Sweden)

    Luiz Antonio de Castro Santos

    2008-06-01

    Full Text Available Ao discutir a luta contra a hanseníase no Brasil, em especial em São Paulo e no Maranhão, o trabalho focaliza as múltiplas formas da história institucional e da "cultura de reclusão" dos hansenianos. Critica-se a visão corrente de um cenário único de disciplina e vigilância para, ao contrário, sugerir a existência de cenários cambiantes, marcados por conflitos, negociações e distintas propostas de prevenção ou de combate à doença. O texto aborda as diferentes concepções médicas e "profanas" da lepra, bem como as propostas e práticas de intervenção social no Brasil e, em particular, nos estados de São Paulo e do Maranhão, desde os primeiros tempos da República até as primeiras décadas da Era Vargas. O combate à doença sempre desafiou conceitos e convicções sobre tratamento, propagação, confinamento e regeneração, sob múltiplos significados epidemiológicos, médicos, culturais e sociais, referidos ao estigma da doença, do pecado e da impureza. O texto procura estabelecer alguns cenários brasileiros nos quais se revelam as identidades coletivas deterioradas, a exclusão social e as políticas de confinamento institucional e de regeneração dos doentes.Al discutir la lucha contra la enfermedad de Hansen en Brasil, en especial en San Pablo y en Maranhão, el trabajo enfocará las múltiples formas de la historia institucional y de la "cultura de reclusión" de los hansenianos (leprosos. Se critica la visión corriente de un escenario único de disciplina y vigilancia para, al contrario, sugerirse la existencia de escenarios cambiantes, marcados por conflictos, negociaciones y distintas propuestas de prevención o de combate a la enfermedad. El texto abordará las diferentes concepciones médicas y 'profanas' de la lepra, así como las propuestas y prácticas de intervención social en Brasil y, en particular, en los estados de San Pablo y de Maranhão, desde los primeros tiempos de la República hasta las

  14. Molecular absorption in Cen A on VLBI scales

    CERN Document Server

    Van Langevelde, H J; Beasley, A

    2004-01-01

    Centaurus A, the nearest AGN shows molecular absorption in the millimeter and radio regime. By observing the absorption with VLBI, we try to constrain the distribution of the gas, in particular whether it resides in the circumnuclear region. Analysis of VLBA observations in four OH and two H2CO transitions is presented here, as well as molecular excitation models parameterized with distance from the AGN. We conclude that the gas is most likely associated with the tilted molecular ring structure observed before in molecular emission and IR continuum. The formaldehyde absorption shows small scale absorption which requires a different distribution than the hydroxyl.

  15. Standardization for Defence Procurement - European Handbook : CEN Workshop 10

    OpenAIRE

    Bresson, Alain; Hunt, Andy; Tuomainen, Ari; Granbom, Bo; Urbanovsky, Claudia; Tredici, Claudio; Kugler, Dietmar; Leferink, Frank; Unden, Göran; Klok, Henk; Huguenin, Herve; Dymarkowski, Krzysztof; Popkowski, Jaroslaw; Lyomio, Jukka; Lodge, Keith

    2005-01-01

    The European Commission (EC), DG Enterprise, endeavours the competitiveness of the European Defence Industry. The plethora of (national) standards, more than 10.000, are recognised by the EC as a major constraint and cost driver. Electromagnetic Compatibility (EMC) or Electromagnetic Environmental Effects (EEE) are considered by the EC as a major topic, with 7 other topics such as environmental engineering, energetic materials, batteries, electrical interfaces. An EMC expert group with repres...

  16. Center for Electron Microscopy, CEN-DTU; The building

    DEFF Research Database (Denmark)

    Horsewell, Andy

    Center for electron nanoscopy, CEN●DTU; The building Andy Horsewell Technical University of Denmark, DTU Materials Technology, Building 204, 2800 Lyngby ABSTRACT CEN●DTU, having been given[1] the opportunity to create a world-class facility with a unique suite of electron microscopes, is in full...... environmental cell, to provide in-situ observations of gas-solid interactions at high temperatures. 2 dual beam FIB-FEGSEMs, both with EDS and one with EBSD will allow 3D image, composition and crystallographic reconstruction at sub-nanometer resolution. Additional electron microscopes, making 7 in all......, comprise a unique assembly of outstanding instruments for research, teaching and innovation. In order to operate at peak performance, such instruments place extreme demands on the stability of the environment around them. All of the following factors must be minimized through careful building design and...

  17. Census 2000 Urbanized Areas (CEN00UA02_2)

    Data.gov (United States)

    California Department of Resources — For Census 2000, the Census Bureau classifies as 'urban' all territory, population, and housing units located within an urbanized area (UA) or an urban cluster...

  18. SCK-CEN Genomic Platform: the microarray technology

    International Nuclear Information System (INIS)

    The human body contains approximately 1014 cells, wherein each one is a nucleus. The nucleus contains 2x23 chromosomes, or two complete sets of the human genome, one set coming from the mother and the other from the father. In principle each set includes 30.000-40.000 genes. If the genome was a book, it would be twenty-three chapters, called chromosomes,each chapter with several thousand stories, called genes. Each story made up of paragraphs, called exons and introns. Each paragraph made up of 3 letter words, called codons. Each word is written with letters called bases (AGCT). But the whole is written in a single very long sentence, which is the DNA molecule or deoxy nucleic acid. The usual state of DNA is two complementary strands intertwined forming a double helix. In the cell, DNA is duplicated during each cell division to ensure the transmission of the genome to the daughter cells. For expression, the DNA is transcribed to messenger RNA. The RNA is edited and finally translated to a protein, each three bases coding for one amino acid. When the whole message is translated, the chain of amino acids folds itself up into a distinctive shape that depends on its sequence. Proteins are the effectors of the genes, and are responsible for all metabolic, hormonal and enzymatic reactions in the cells. The expressed RNA determines the amount of proteins to be produced and subsequently the desired effect (strong or weak) in the cell. The microarray technology aims at quantifying the amount of RNA present in the cell from each expressed gene, and at evaluating the changes of these amounts after exposure of the cell to toxic chemicals, ionising radiation or other stress components. The global picture of expressed genes helps to understand the affected genetic pathways in the cell at the molecular level. The microarray technology is used in the Radiobiology and Microbiology topics to study the effect of ionising radiation on human cells and mouse tissue, as well as the effect of harsh environment and space conditions on micro-organisms

  19. Freire no cenário de Immanuel Wallerstein

    Directory of Open Access Journals (Sweden)

    José Eustáquio Romão

    2005-01-01

    Full Text Available This text enumerates and describes the several dilemmas and challenges of Education in the 21st century, from the perspective of the last works and educational thoughts of Paulo Freire. The main concern is to (reread this author taking into consideration the contemporary world educational scenario, confronting the utopistics of Immanuel Wallerstein — well known for his long duration studies and for the concept of modern world-system — with Paulo Freire utopia. Paulo Freire’s idea of "human being" or how pedagogy facilitates the conciliation of its historicity and essenciality is also discussed.

  20. Liderança e comunicação no cenário da gestão em enfermagem Liderazgo y comunicación en el escenario de la gestión en enfermería Leadership and communication in the scenery of nursing management

    Directory of Open Access Journals (Sweden)

    Maria Auxiliadora Trevizan

    1998-12-01

    Full Text Available Tecendo considerações a respeito de comunicação e liderança, as autoras examinam o papel do líder como foco de recepção e transmissão de informação, fundamentadas na classificação de Mintzberg, em relação a seus papéis informativos, ou seja, o líder atuando como monitor, como disseminador e como porta-voz. Contextualizando esta abordagem para o cenário da gestão em enfermagem, as autoras enfocam a dimensão do papel do enfermeiro-líder como elemento essencial de comunicação nos sistemas de organização da assistência de enfermagem.Tejiendo consideraciones sobre comunicación y liderazgo, las autoras examinan el papel del líder como foco de recepción y transmisión de información, basadas en la clasificación de Mintzberg, en relación a sus papeles informativos, o sea, el líder actuando como monitor, como diseminador y como portavoz. Contextualizando este abordaje para el escenario de la gestión en enfermería, las autoras enfocan la dimensión del papel del enfermero-líder como elemento esencial de comunicación en los sistemas de organización de la asistencia de enfermería.Considering communication and leadership, authors examine the role of the leader as a focus of reception and transmission of information, based on the classification of Mintzberg related to their informative roles, such as the leader acting as monitor, disseminator and spokesman. Contextualizing this approach in the scenery of nursing management, authors study the dimension of nurses-leaders role as an essential element of communication in the systems of organization of nursing care.

  1. Teaching of Astronomy: Scenarios of Teaching Practice in Elementary Schools. (Spanish Title: Enseñanza de la Astronomía: Semblanzas de la Práctica Docente en Educación Primaria.) Ensino de Astronomia: Cenários da Prática Docente no Ensino Fundamental

    Science.gov (United States)

    Marchi Gonzatti, Sônia Elisa; Spessatto De Maman, Andréia; Fernandes Borragini, Eliana; Kerber, Júlia Cristina; Haetinger, Werner

    2013-12-01

    atomización de los asuntos, aunque temas como movimientos de la Tierra y fenómenos astronómicos hayan sido citados por la mayoría de los participantes. En cuanto a las estrategias, se verifico que se emplean principalmente clases con el apoyo de recursos bidimensionales, como películas, textos, mapas y búsqueda en internet. Las principales dificultades fueron la falta de formación específica con respecto a los contenidos de Astronomía, y el nivel de abstracción exigido por los contenidos. De modo general, esos indicadores convergen para los resultados ya encontrados en otros estudios, en el que las deficiencias de la formación inicial de los profesores, o incluso su ausencia, dificulta el adecuado abordaje de la Astronomía en las clases. Neste trabalho são apresentados os principais resultados de uma investigação realizada no campo da Educação em Astronomia, com professores do ensino fundamental de duas regiões do Rio Grande do Sul. O objetivo do estudo foi caracterizar o cenário regional do ensino de Astronomia, estabelecendo um comparativo com o cenário nacional. Esse estudo abordou três questões: identificar os principais temas de astronomia trabalhados em sala de aula, as estratégias metodológicas e quais as dificuldades apresentadas pelos professores ao desenvolver sua prática. Quanto aos conteúdos, encontrouse uma pulverização dos assuntos abordados, embora temas como movimentos da Terra e fenômenos astronômicos tenham sido citados pela maioria dos participantes. Sobre estratégias, são utilizadas principalmente aulas com apoio de recursos bidimensionais, como filmes, textos, mapas e pesquisa na internet. As principais dificuldades foram: falta de formação específica em relação a conteúdos de Astronomia; nível de abstração dos conteúdos, que dificultam sua compreensão, tanto pelos alunos quanto pelos próprios professores. De maneira geral, esses indicadores convergem para resultados já encontrados em outros estudos que

  2. Construção de cenários por análises temporais e métricas espaciais em área sob influência de reservatórios de hidrelétricas. Construction of scenarios by time series analysis and space metrics in region under the influence of hydroelectric dams reservoirs.

    Directory of Open Access Journals (Sweden)

    Rozely Ferreira dos SANTOS

    2008-12-01

    Full Text Available De forma geral, as mudanças ambientaissão diagnosticadas pela comparação de dados emdiferentes períodos tendo como base a composiçãodo uso e ocupação da terra. Somente sob essaperspectiva, a obtenção dos resultados não responde,de fato, a complexidade e a dinâmica da região.Nessa direção, o objetivo deste trabalho foidesenvolver, metodologicamente, um cenário históricoque relacionasse as decisões políticas adotadas parauma região com as mudanças no uso das terras,por meio do confronto dos mapas e os índicesespaciais de mudanças com as informaçõeshistóricas e entrevistas com as lideranças locais.A área de estudo é composta por cinco municípiosque margeiam os reservatórios de Jupiá, IlhaSolteira e Três Irmãos (SP. Esses reservatórios,reconhecidamente, mudaram a paisagem regional.Os índices e as métricas retrataram as informaçõeshistóricas, permitindo a discussão dos fatoresculturais, condições locais da terra, ações políticase estratégicas adotadas para a região. Constatou-se quea implantação das usinas teve forte influência sobrea dinâmica da ocupação local, principalmente pelacontratação de mão-de-obra das lavouras e reduçãodo arrendamento de terras. Porém, outros fatores,como a falência de empresas agrícolas e a implantaçãode frigoríficos nas proximidades, contribuíram paraa inversão das áreas agrícolas em pastagens.As lideranças têm consciência das mudançasocorridas na região e consideram que elas nãoforam boas, pois a região não se desenvolveu.Generally, the environmental changes arediagnosed by comparing data in different periodsbased on the land use occupation. Only under thatperspective, the achievement of results does notanswer, in fact, the complexity and dynamism ofthe region. In this way, the goal of this work was todevelop, methodologically, a historical scenariothat links the political decisions taken to a regionwith the land use changes, throught comparing

  3. Identificação das áreas susceptíveis aos processos erosivos em duas bacias do Sistema Cantareira por meio de diferentes cenários = Identifying susceptible areas to erosive processes in the Cantareira System, based on different scenarios

    Directory of Open Access Journals (Sweden)

    Vânia Rosa Pereira

    2009-01-01

    Full Text Available Neste trabalho, com base em Geoprocessamento e pesquisas de campo, oobjetivo é identificar áreas susceptíveis à erosão na cabeceira da bacia do rio Atibaia, ou seja, as bacias dos rios Cachoeira e Atibainha a montante das barragens do Sistema Cantareira. Em relação ao relevo, além das características de declive, as áreas saturadas de água também interferem no escoamento superficial das vertentes, sendo consideradas, portanto, áreas susceptíveis à erosão. Cruzaram-se informações de relevo (declividades e áreas saturadas, uso e ocupação das terras e seus respectivos procedimentos em dois cenários: os dos anos de 1986 e 2005. Os resultados indicaram que, em 1986 e 2005, o uso e ocupação são mata nativa, pastagem e silvicultura e que está ocorrendo uma transição: pastagem e mata nativa estão sendo substituídas por silvicultura. Na área estudada, predomina o relevo ondulado médio (20 a 32,5% de declive e as áreas de acumulação de água consistem em 25% da área total. As áreas altamente susceptíveis à erosão evoluíram no intervalo de 19 anos e a bacia do Atibainha apresentou os maiores índices. A identificação das áreas susceptíveis à erosão, utilizando série histórica, disponibiliza material que auxilia no reconhecimento da realidadeda região, apresentando caminhos para ações de planejamento agroambiental.This research work presents, based on geoprocessing and field surveys, erosion-susceptible areas in the Atibaia headwater streamwatershed: Cachoeira and Atibainha upstream Cantareira System dams. In addition to slope characteristics, water-saturated areas also intervene in the surface runoff process, being considered, therefore, erosion-susceptible areas. Thus, relief information such as slope andwater-saturated areas, land use in two scenarios, in 1986 and 2005, and their respective procedures, were crossed. The results indicated that in 1986 and 2005, land use was represented by native forest

  4. A historiografia da educação paranaense no cenário da história da educação brasileira: 10 anos de pesquisa na Universidade Federal do Paraná(1999-2008 Historiography of Parana's education in the brazilian education history scenario: 10 years of research at Federal University of Paraná [Universidade Federal do Paraná] (1999-2008

    Directory of Open Access Journals (Sweden)

    Marcus Levy Bencostta

    2010-12-01

    Full Text Available Este artigo trata da produção acadêmica da Linha de Pesquisa História e Historiografia da Educação do Programa de Pós Graduação em Educação da Universidade Federal do Paraná, construída em seus primeiros dez anos (1999-2008 de dedicação à formação de pesquisadores. Trata-se de um ensaio cuja cartografia bibliográfica apresenta interesse historiográfico ao analisar a relação estabelecida por esse grupo de investigadores com o cenário das trilhas percorridas pela produção nacional em História da Educação.This article concerns the academic output of the History and Historiography of Education researching field of the Post graduation program in Education of the Federal University of Paraná (Universidade Federal do Paraná, which was created in its first ten years (1999-2008 of dedication to the instruction of the researchers. It's an essay whose bibliographic cartography has a historiographic interest when analyzing the relation set by this researchers group with the scenario of the paths made by the national output in the field of Education History.

  5. Cenários da agressão no trânsito: a percepção que as pessoas têm de um motorista agressivo Escenarios de agresión en el tránsito: la percepción que las personas tienen de un conductor agresivo Aggression scenes in road traffic: people's perception of an aggressive driver

    Directory of Open Access Journals (Sweden)

    Valdiney V. Gouveia

    2008-03-01

    Full Text Available Este estudo objetivou conhecer a percepção que as pessoas têm de um motorista agressivo e as causas atribuídas ao seu comportamento. Participaram 389 estudantes universitários, a maioria mulheres (53,8%. Estes leram os cenários de agressão no trânsito, indicando sua opinião acerca do motorista agressor (civilidade e rusticidade e de suas motivações (interna e externa para agir com agressividade. Posteriormente, responderam o Questionário de Agressão de Buss-Perry e a perguntas demográficas. Os resultados indicaram o motorista agressor percebido como pessoa de mais rusticidade do que delicadeza e urbanidade; contudo, na percepção dos participantes, o comportamento deste foi considerado conforme o tipo de motivação. Os respondentes com maior pontuação em agressão verbal e agressão física tenderam a minimizar a conotação negativa do comportamento do motorista agressor. Finalmente, seu comportamento foi julgado como mais internamente determinado quando se tratava de alguém do sexo masculino e jovem. Estes resultados são consistentes com os da literatura.Este estudio buscó conocer la percepción que las personas tienen de un conductor agresivo y las causas atribuidas a su conducta. Participaron 389 estudiantes universitarios, en su mayoría mujeres (53.8%. Ésos leyeron escenarios de agresión en el tránsito, indicando su opinión con respecto al conductor agresor (civilidad y rusticidad y sus motivaciones (interna y externa para accionar con agresividad. Posteriormente, contestaron al Cuestionario de Agresión de Buss-Perry y a preguntas demográficas. Los resultados indicaron que el conductor agresor fue percibido como una persona de más rusticidad, que delicadeza y civilidad; sin embargo, en la percepción de los participantes, el comportamiento de éste fue considerado conforme con el tipo de motivación. Los respondientes con mayor puntaje en agresión verbal y agresión física tuvieron la tendencia a minimizar la

  6. Závislost cen akcií ropných společností na ceně ropy

    OpenAIRE

    Šoba, Oldřich; Širůček, Martin; Havíř, Tomáš

    2013-01-01

    The focus of this article is the relationship between selected oil company's stock price and oil price and the dependence of these companies stock price on oil price in the period from year 2000 to 2010. The aim of this paper is pursuant to partial empirical analysis evaluate the dependence of oil producer company's stock price on oil price. The partial aim is identify the differences between oil price and stock price of selected companies by using two basic methodological procedures. The ...

  7. Ionoma de plantas: cenário atual e perspectivas Ionomics: current scenario and prospects

    OpenAIRE

    Adriano Alves da Silva; Carla Andrea Delatorre; Marcelo Gravina Moraes

    2011-01-01

    Os sistemas biológicos são governados pela soma de todos os genes expressos, proteínas, metabólitos e elementos de um organismo. A análise do ionoma de um tecido auxilia a identificar, entre outros aspectos, genes que contribuam para maior ou menor acúmulo de elementos essenciais e metais pesados, bem como a interação entre processos metabólicos. O conhecimento do ionoma, aliado ao uso de técnicas de biologia molecular, formam um sistema muito eficiente para mapeamento gênico, para estudos de...

  8. O fracasso escolar no cenário das patologias da contemporaneidade

    Directory of Open Access Journals (Sweden)

    Francisco Ramos de Farias

    2014-08-01

    Full Text Available An approach to schooling failure, within the sphere of contemporary pathologies, requires placing the social relationships in a historical dimension, characteristic of an epoch. When we refer to the aphorism: the unconscious is the social (ASSOUN, 1994; we disengage ourselves from readings that place the individual versus society and think schooling failure to be the reflex of contingencies, historical transformations and unconscious determinations that carry the initials of the social symptom, which is structured as the reflection of discourse production dominant of the period. It is therefore necessary to place discourse and pedagogical practice, which emerged in the Modern era, in order to understand schooling failure, an expression that directly opposes the ideals expected of schooling in terms of excellence of the learning function. What truth is depicted from schooling failure if the symptom results from repressed truth? It refers to the return and insistence stemming from the destination that civilization confers to the discomfort lived by humans. Thus, schooling failure, the return of a truth, attaches itself to a historical contingency or belongs to present day pathologies, wherein, the ideal to transform and to better society with scientific progress and improvement of technique persist as conditions for liberty and happiness. The execution of such an assignment is aligned to a forged model that imprisons the child in a technical childhood. Finally, schooling failure, as it reveals subjective truth, insinuates itself into the wrong direction to social demands that impose equality and cut out expressions of singularity excluded from spaces established by the dominant discourse, which give priority to orthopedics forms in order to sustain the ideal of perfect men.

  9. Interakce zdanění a tržních cen

    OpenAIRE

    Špírková, Veronika

    2008-01-01

    My bachelor assignment deals with an influence of taxation on market prices of those products which subject to excise tax and value added tax. The aim of the assignment is to find consequences of the change of tax rate on product prices, to show how this change influences consumer spending and who is taking the tax burden. For the analysis I've chosen following products: beer, Petra cigarettes and Natural 95 petrol.

  10. Sistema agroindustrial da cana: cenários e agenda estratégica

    Directory of Open Access Journals (Sweden)

    Marcos Fava Neves

    2007-12-01

    Full Text Available O artigo apresenta números recentes do sistema agroindustrial da cana-de-açúcar no Brasil e tendências para o álcool, açúcar e energia. Utilizando a metodologia de análise macroambiental, traz as principais ameaças e oportunidades ao sistema, nas variáveis político-legais (institucionais, econômico-naturais, socioculturais e tecnológicas. Da mesma forma, por meio de uma análise interna, levanta os pontos fortes e fracos em cinco dimensões analíticas: produção, comunicação, logística, capacitação e coordenação. Finaliza, por intermédio do método de planejamento e gestão estratégica de sistemas produtivos (GESis, propondo uma agenda estratégica, com políticas públicas e privadas, para o crescimento contínuo e sustentável deste importante sistema produtivo da economia brasileira e mundial.The article presents data about the sugar cane agribusiness system (AGS in Brazil, and trends for ethanol, sugar and bioenergy. Making use of the macro environmental (STEP analysis, it's possible to know opportunities and threats to the whole system, in terms of politic-legal (institutional, economic-environmental, socio-cultural and technological variables. At the same time, through the internal analysis, it can be showed strength and weak points in terms of five analytical dimensions: production, communication, logistics, personal capabilities and coordination. To finish, through the productive system (chain strategic planning method, it can be generated a strategic agenda, with public and private policies, for the sustainable growth of this important productive system in the Brazilian and global economy.

  11. Ionoma de plantas: cenário atual e perspectivas Ionomics: current scenario and prospects

    Directory of Open Access Journals (Sweden)

    Adriano Alves da Silva

    2011-08-01

    Full Text Available Os sistemas biológicos são governados pela soma de todos os genes expressos, proteínas, metabólitos e elementos de um organismo. A análise do ionoma de um tecido auxilia a identificar, entre outros aspectos, genes que contribuam para maior ou menor acúmulo de elementos essenciais e metais pesados, bem como a interação entre processos metabólicos. O conhecimento do ionoma, aliado ao uso de técnicas de biologia molecular, formam um sistema muito eficiente para mapeamento gênico, para estudos de genômica funcional e para caracterização geral do estado fisiológico das plantas em uma determinada condição. Além disso, o estudo do ionoma permite avaliar as interações existentes entre os mais diversos íons das plantas e como a disponibilidade de um íon afeta a absorção e uso de outros. O objetivo desta revisão é apresentar e discutir o ionoma como uma ferramenta importante na elucidação dos mais diversos mecanismos envolvidos na absorção, translocação e acúmulo de elementos essenciais e não-essenciais em plantas e sua relação com o metabolismo delas.Biological systems are governed by the sum of all expressed genes, proteins, metabolites and components of an organism. The analysis of a tissue ionome helps to identify, among others, genes that contribute to a greater or lesser accumulation of essential elements and heavy metals, as well as interaction between metabolic processes. The ionome knowledge, coupled with the use of molecular biology techniques, form a very efficient system for gene mapping, and functional genomic studies, and general characterization of plants physiological status in a given condition. Another interesting process that the ionome study allows to analyse is the interactions among plants' ions and how such ion availability can affect the absorption and use of others. The aim of this review is to present and discuss the ionome as an important tool in the elucidation of several mechanisms involved in absorption, translocation and accumulation of essential and nonessential elements in plant and its relation with their metabolism.

  12. Imaging the cool stars in the interacting binaries AE Aqr, BV Cen and V426 Oph

    CERN Document Server

    Watson, C A; Dhillon, V S; Shahbaz, T

    2007-01-01

    It is well known that magnetic activity in late-type stars increases with increasing rotation rate. Using inversion techniques akin to medical imaging, the rotationally broadened profiles from such stars can be used to reconstruct `Doppler images' of the distribution of cool, dark starspots on their stellar surfaces. Interacting binaries, however, contain some of the most rapidly rotating late-type stars known and thus provide important tests of stellar dynamo models. Furthermore, magnetic activity is thought to play a key role in their evolution, behaviour and accretion dynamics. Despite this, we know comparatively little about the magnetic activity and its influence on such binaries. In this review we summarise the concepts behind indirect imaging of these systems, and present movies of the starspot distributions on the cool stars in some interacting binaries. We conclude with a look at the future opportunities that such studies may provide.

  13. Imaging the cool stars in the interacting binaries AE Aqr, BV Cen and V426 Oph

    Science.gov (United States)

    Watson, C. A.; Steeghs, D.; Dhillon, V. S.; Shahbaz, T.

    2007-10-01

    It is well known that magnetic activity in late-type stars increases with increasing rotation rate. Using inversion techniques akin to medical imaging, the rotationally broadened profiles from such stars can be used to reconstruct `Doppler images' of the distribution of cool, dark starspots on their stellar surfaces. Interacting binaries, however, contain some of the most rapidly rotating late-type stars known and thus provide important tests of stellar dynamo models. Furthermore, magnetic activity is thought to play a key role in their evolution, behaviour and accretion dynamics. Despite this, we know comparatively little about the magnetic activity and its influence on such binaries. In this review we summarise the concepts behind indirect imaging of these systems, and present movies of the starspot distributions on the cool stars in some interacting binaries. We conclude with a look at the future opportunities that such studies may provide.

  14. Circulação e consumo de telenovela: Passione num cenário multiplataforma

    Directory of Open Access Journals (Sweden)

    Nilda Jacks

    2013-01-01

    Full Text Available A proposta deste artigo é discutir a circulação e o âmbito do consumo da telenovela Passione, tendo como ponto de partida a esfera da recepção. Para tanto, empreendeu-se um estudo focado nas plataformas digitais Twitter, Orkut, Facebook e Blogs, ambientes nos quais os receptores repercutem a trama e fazem circular novos produtos referentes à novela. Os resultados nos permitem inferir que a forma de consumir e de ser receptor se modifica no atual contexto de convergência em que mídias e indivíduos estão inseridos

  15. Analiza cen prometnih in komunikacijskih storitev v izbranih državah srednje in vzhodne Evrope

    OpenAIRE

    Završek, Valerija

    2012-01-01

    Diplomsko delo je razdeljeno na dva dela. V prvem delu predstavlja makroekonomsko aktivnost in raven gospodarske razvitosti izbranih držav. Vse štiri države so relativno majhne in zunanjetrgovinsko odprte ekonomije. Tri države so članice Evropske unije, kar jim pri njihovem razvoju omogoča mnogo več kot bi jim le njihovi lastni tržni potenciali. To so Češka, Slovaška in Slovenija, ki so leta 2004 vstopile v EU. Hrvaška je kot država pristopnica, ki naj bi k EU pristopila leta 2013. Po bruto d...

  16. Activities report of the Nuclear Physics Department (CEN Saclay). 1 Oct 1966 - 30 Sep 1967

    International Nuclear Information System (INIS)

    Three parts of the report treat the questions related to the tandem, the cyclotrons and the electrons linear accelerators, then two annexes give the role of publications in this year, and the list of scientific and technical personnel. In the area of Van de Graaff and cyclotrons, progress has been made in the realisation of particles identification systems and in the methods of data processing. The starting up of the trochoidal injection has allowed an improvement of the protons polarisation rate and the intensity increase by a factor 1000

  17. A banda larga e o cenário brasileiro das telecomunicações

    Directory of Open Access Journals (Sweden)

    Andre Garcia Pena

    2012-05-01

    Full Text Available Informe Setorial: Ponto de partida para a construção de uma política pública voltada à massificação do acesso à Internet em banda larga, a análise da infraestrutura de telecomunicações instalada no país faz-se necessária para identificar as deficiências em relação à disponibilidade do acesso e capacidade da rede, bem como auxilia na identificação das empresas dominantes no setor. Adicionalmente, o conhecimento da infraestrutura instalada permite ao regulador a adoção de medidas pró-competição, tais como o compartilhamento de meios, visto que um dos problemas enfrentados em setores de infraestrutura como telecomunicações refere-se ao elevado custo afundado relativo à implantação da rede, o que limita a entrada de novos competidores.

  18. Cenários de desmatamento para a Amazônia

    OpenAIRE

    Britaldo Silveira Soares-Filho; Daniel Curtis Nepstad; Lisa Curran; Gustavo Coutinho Cerqueira; Ricardo Alexandrino Garcia; Claudia Azevedo Ramos; Eliane Voll; Alice McDonald; Paul Lefebvre; Peter Schlesinger; David McGrath

    2005-01-01

    A AMAZÔNIA está entrando em uma era de rápidas mudanças impulsionadas pela previsão de asfaltamento de rodovias que estimularão a expansão da fronteira agrícola e de exploração madeireira. O declínio do custo de transporte tem importantes implicações para a biodiversidade, emissão de gases que contribuem para o efeito estufa e prosperidade da sociedade da Amazônia a longo prazo. Para analisar esse contexto, foi desenvolvido um modelo de simulação de desmatamento na bacia Amazônica, sensível a...

  19. Vývoj struktury výroby a cen ve zvoleném podniku

    OpenAIRE

    Kunc, Tomáš

    2012-01-01

    This bachelor thesis deals with the commodity of milk and its products. It focuses mainly on the price development of milk and the whole procedure from its production to getting to the ultimate consumer. The first part of the thesis, based on written resources, describes the history of milk processing from its very beginning as well as the development of milk industry that followed. It outlines the technologies of milk production which include milk processing and other related information...

  20. 40 CFR 227.27 - Limiting permissible con-cen-tra-tion (LPC).

    Science.gov (United States)

    2010-07-01

    ....29, will not exceed a toxicity threshold defined as 0.01 of a concentration shown to be acutely toxic... not cause unreasonable acute or chronic toxicity or other sublethal adverse effects based on...

  1. As leis da cibercultura e as competências para o cenário digital

    OpenAIRE

    Cerigatto, Mariana Pícaro; Casarin, Helen de Castro Silva

    2015-01-01

    Nossa sociedade passou, nas últimas décadas, por notórias transformações. Da sociedade de caça/coleta, com a técnica do cultivo, passamos para a sociedade agrícola; da energia a vapor e elétrica, formamos a sociedade industrial e agora, com a rede de computadores, passamos para a chamada sociedade em rede, que está intrinsecamente ligada à emergência de um novo paradigma tecnológico, baseado nas tecnologias de comunicação e informação. Hoje, a sociedade passa a ser informacional e global. O n...

  2. Vývoj cen ropy na světových trzích

    OpenAIRE

    Garšicová, Beata

    2010-01-01

    The thesis describes the evolution of crude oil prices on the world markets since 1896 till present. It deals with the factors having influence on the fluctuations in oil prices in five historical periods. It also compares the prices of different types of oil: WTI, Brent and the OPEC's oil basket. Furthermore it characterize the impact of oil price changes on the economies. First it describes the impact on importers and exporters in general, then it examines the influence on the United States...

  3. SCK CEN'S International School for Radiological Protection (ISRP): communicating the aspects of radiological protection

    International Nuclear Information System (INIS)

    Full text: Thanks to its thorough experience in the field of peaceful applications of nuclear science and technology, radiological protection and radiobiology, the Belgian nuclear research centre S.C.K. E.N. has garnered a reputation as an outstanding centre of research, training and education. Functioning as a task force within S.C.K. E.N., the international school for Radiological Protection (i.s.R.P.) initiates and manages training and research projects and contributes to related activities on national and international level. I.s.R.P. activities are situated on three axes: Coordination and organisation of training and education programmes on radiological protection The i.s.R.P. training activities deal with all aspects of radiological protection and are directed to the private, medical and industrial nuclear sector, national and international policy organisations, the political and academic world and the general public. Courses are also organised in cooperation with technical high schools, universities and public and private health services. In addition, i.s.R.P. is involved in international research networks and training programmes, such as those of the European Commission and the IAEA. The i.s.R.P. team of lecturers includes technicians, physicists, biologists, medical doctors, engineers and social scientists, who all bring insights and ideas from their specific background into the course programmes. As S.C.K. E.N. staff members, they have a solid knowledge and experience in their field, and can thus directly transfer their theoretical knowledge and practical experience to the various courses. Course programmes are composed together with the customer, drawing from the set of basic and expertise course modules and completed with technical visits. The basic modules textbooks exist in Dutch, French and English. In addition, all course modules and visits can be lectured and guided in Dutch, French or English. Research on trans-disciplinary aspects of education and training Understanding the benefits and risks of radioactivity requires technical insight and training, but also an understanding of the context and a sense for the social and philosophical aspects of the situation. In coordination with the academic sector, the research of i.s.R.P. concentrates on how to integrate this trans-disciplinary approach in education and training programmes for professionals as well as students and pupils. Policy support with regard to applied education and training on a national and international level The implementation of a coherent approach to education and training in radiological protection becomes crucial in a world of dynamic markets and increasing worker mobility. Through networking and participation in international programmes, i.s.R.P.aims to contribute to improved harmonization of education, training practice and skills recognition on a national and international level. (authors)

  4. Low-enriched research reactor fuel: Post-Irradiation Examinations at SCK-CEN

    International Nuclear Information System (INIS)

    Generally, research and test reactors are fuelled with fuel plates instead of pins. In most cases in the past, these plates consisted of high enriched (higher than 95 percent 235U) UAl3 powder mixed with a pure Al matrix (called the meat) in between two aluminium alloy plates (the cladding). These plates are then assembled in fuel elements of different designs to fit the needs of the various reactors. Since the 1970's, efforts have been going on to replace the high-enriched, low-density UAl3 fuel with high-density, low enriched (235U) replacements. This search is driven by the attempt to reduce the civil use of high-enriched materials because of proliferation risks and terrorist threats. American initiatives, such as the Global Threat Reduction Initiative and the Reduced Enrichment for Research and Test Reactors program have triggered the development of reliable low-enriched fuel types for these reactors, which can replace the high enriched ones without loss of performance. Most success has been obtained with U3Si2 fuel, which is currently used in many research reactors in the world. However, efforts to search for a better replacement have continued and are currently directed towards the U-Mo alloy fuel (7-10 weight percent Mo)

  5. Recursos humanos para novos cenários Human resources for new scenarios

    Directory of Open Access Journals (Sweden)

    Angelo C. Pinto

    2009-01-01

    Full Text Available The Brazilian Chemical Society - SBQ has made substantial contributions to the formation of qualified human resources at all levels since its foundation in 1977. Several papers addressing this subject have been published in Quimica Nova by different authors over the last years. In this paper, we discuss the present need for "Curriculum Guidelines" for undergraduate education in Chemistry with actions to be taken in accord with the Principles of Green Chemistry and Sustainability.

  6. Activities report of the Nuclear Physics Department (CEN Saclay). 1 Oct 1966 - 30 Sep 1967; Compte rendu d'activite du Departement de Physique Nucleaire (CEN Saclay). 1 Oct 1966 - 30 Sep 1967

    Energy Technology Data Exchange (ETDEWEB)

    Cotton, E. [and others

    1967-07-01

    Three parts of the report treat the questions related to the tandem, the cyclotrons and the electrons linear accelerators, then two annexes give the role of publications in this year, and the list of scientific and technical personnel. In the area of Van de Graaff and cyclotrons, progress has been made in the realisation of particles identification systems and in the methods of data processing. The starting up of the trochoidal injection has allowed an improvement of the protons polarisation rate and the intensity increase by a factor 1000. [French] Trois parties traitent des questions concernant le tandem, les cyclotrons et les accelerateurs lineaires a electrons, puis deux annexes donnent la liste des publications de l'annee et la liste du personnel scientifique et technique. Dans le domaine des Van de Graaf et cyclotrons, il faut signaler les progres dans la realisation de systemes d identification de particules et dans les methodes de traitement de donnees. La mise en service de l injection trochoidale a permis une amelioration du taux de polarisation des protons et l'accroissement de l'intensite d un facteur 1000. (auteurs)

  7. Evaluation of corrosiveness grade of the main pipeline system within the machine-room of the Cen Juragua; Evaluacion del grado corrosivo de los principales sistemas de tuberias de la sala de maquinas de la CEN Juragua

    Energy Technology Data Exchange (ETDEWEB)

    Camacho C, J.; Corvo P, F. [Central Electronuclear de Juragua, Cuba (Cuba)

    1998-12-31

    It is realized a study of the corrosion process and the products formed over the carbon steel in different points of the machine-room of the Electronuclear plant of Juragua (Cuba) particularly in the pipelines considering the specific characteristics of corrosion under roof which has been less studied. The determination of corrosiveness grade was carried out by gravimetric methods (lost and gain weight) in the different coats of the machine-room not existing a correlation between them in according to results with those ones obtained by Infrared Spectroscopy, in which there is not a correlation between the band intensities (lepidocrocite/ goethite) and the corrosion; however both explain different parts of corrosive process. Also it is realized the corrosion products analysis by chemical methods and by Atomic Absorption Spectrometry, obtaining the concentration of the major anions and cations of importance for the corrosion, not existing a meaning correlation between them and the corrosion velocity by what it was determined the absorption isotherms, obtaining as result a microporous structure in the formed oxides which was capable to retain and to absorb water and pollutants which could be this the main cause of corrosion. By analyzing the high concentration of iron and the low concentration of the remainder anions and cations it is possible to make the traditional chemical washes which are less expensive and greater effectiveness. All the obtained results are very important to assure the conditions of the pipelines systems installed at the presence of Government and Foreign organizations which are interested for the protection and conservation measures in the pipelines system. (Author)

  8. The genetic diversity of cen-tral and peripheral popula-tions of ratlike hamster(Cricetulus triton)

    Institute of Scientific and Technical Information of China (English)

    2002-01-01

    The impact of habitat fragmentation and isolation on the genetic diversity of populations has attracted much attention in studies of meta-population and conservation biology. In this work, using the randomly amplified polymorphic DNA (RAPD) technique, we studied the genetic diversity of central, peripheral and peninsular populations of ratlike hamster, which were collected in five locations of the North China Plain and its surrounding areas, in 1999. The study revealed that, ⅰ) the genetic diversity of central population of Raoyang County>the sub-central populations of Gu'an County and Taikang County>the peripheral population of Shunyi District>the peninsular population of Mentougou District; ⅱ) the genetic diversities of the five populations were positively correlated to the nearest distances to the peripheral line of population distribution; ⅲ) there were significant differences of gene frequencies of some RAPD fragments among the five populations. More RAPD fragments disappeared in peripheral populations than in central or sub-central populations. The frequencies of two RAPD fragments were correlated to the latitude. This study clearly indicated that the variation of the genetic diversities of the five populations was caused by edge effect and frag- mentation through the enhanced inbreeding and genetic drift, and thus supported the view that habitat fragmentation and related edge effect reduce the population genetic diversity.

  9. Silver-doped germanium clusters AgCen(n=1∼17): Geometry, stability and electronic property

    International Nuclear Information System (INIS)

    Germanium cluster doped with an Ag atom has been systematically investigated by using density functional theory approach at B3LYP/LanL2DZ level. Different growth patterns appear between small-sized (n=1∼11) Ag-doped germanium clusters and relative larger-sized (n=12∼17) Ag-doped germanium clusters. For the most stable structures of AgGen (n=12∼17) clusters, the Ag atom would be completely surrounded by Ge atoms to form Ag-encapsulated Gen cages. According to the calculated fragmentation energy and the second-order difference of the total energy, we predict that the magic number of AgGen (n=1∼17) clusters should be 5, 10, 12 and 15. Mulliken population analysis shows that the direction of charge transfer depends on the size of the cluster and the doped transition metal.We research dynamical stability of cluster by analyzing vibrational spectra. The obvious infrared and Raman spectra characters can be used to distinguish the structure from experiments. (authors)

  10. High-resolution spectroscopy of V854 Cen in decline - absorption and emission lines of C2 molecules

    Science.gov (United States)

    Kameswara Rao, N.; Lambert, David L.

    2000-04-01

    High-resolution optical spectra of the R Coronae Borealis (RCB) star V854 Centauri in the early stages of a decline show, in addition to the features reported for other RCBs in decline, narrow absorption lines from the C2 Phillips system. The low rotational temperature, Trot=1150K, of the C2 ground electronic state suggests the cold gas is associated with the developing shroud of carbon dust. These absorption lines were not seen at a fainter magnitude on the rise from minimum light, nor at maximum light. This is the first detection of cold gas around an RCB star.

  11. Human space biology at SCK-CEN: from in vitro cell experiments to the follow-up of astronauts

    International Nuclear Information System (INIS)

    Prolonged exposure to space radiation and extended microgravity has revealed profound physiological and clinical changes in astronauts. The health problems thought to be related to the effects of microgravity include a decrease in the heart and the respiratory rates, a loss of body weight, changes in bone calcium, a redistribution of body fluids with a greater amount in the upper body, a decrease in muscle tissue, a weakening of the veins and arteries in the legs, as well as an underproduction of red blood cells leading to anaemia. At the cellular and molecular levels, microgravity is known to induce both a loss of T-cell activation and changes in gene expression patterns, as well as a three-dimensional growth of normal cells and tumour cells, an alteration of the mitochondrial organization, a modification of the production of extracellular matrix proteins and apoptosis in some types of cells. The Earth's magnetic field protects us from harmful radiation. On Earth, we are still exposed to small amounts of radiation when we go for medical x-rays, when we travel on transcontinental flights or just from radon in the air. However, astronauts are exposed to 50 to 100 times as much radiation - and that is just in a low Earth orbit. In deep space, astronauts can be exposed to even higher doses. It is well known that large amounts of radiation can cause severe health effects by altering DNA in our cells. The health effects from space radiation are therefore a critical safety concern for long-term space travel. Possible health risks include cancer, cataracts, acute radiation sickness, hereditary effects, and damage to the central nervous system. The aims of this research are 1) to ensure the immunological monitoring of a cohort of astronauts (having spent around 6 months aboard the International Space Station ISS) and 2) to investigate the effects of an in vitro exposure of endothelial cells and other types of cells to radiation and/or microgravity conditions

  12. A paixão pela imagem: o eu como cenógrafo das virtualidades do si mesmo

    Directory of Open Access Journals (Sweden)

    Marina Pinheiro

    2016-03-01

    Full Text Available É propósito do presente trabalho perscrutar, através das expressões culturais da virtualização do si mesmo, a equivocidade pendular entre o fetichismo comum e as formas de estetização do desejo na atualidade tecnológica. Desde a primeira formação egoica, “projeção de superfície” do olhar materno, ao ego virtualizado nas marcações corporais extremas, ou mesmo avatarizado nos games e redes sociais; torna-se necessário à psicanálise a discussão sobre a dialética entre objetificação e possibilidades de autoração simbólica da existência na contemporaneidade.

  13. Energia nuclear em um cenário de trinta anos Nuclear energy over a 30-year scenario

    Directory of Open Access Journals (Sweden)

    Carlos Feu Alvim

    2007-04-01

    Full Text Available A perspectiva da Energia Nuclear no Brasil é analisada sob os aspectos demanda, custos, ambiental, tecnológico e estratégico. A demanda energética projetada, mesmo para crescimentos abaixo dos desejados e considerando algum esforço de redução da intensidade energética, mostra a necessidade de adicionar energia térmica à geração elétrica, hoje predominantemente hídrica. A energia nuclear deve ter participação nessa geração por motivos econômicos, ambientais, tecnológicos e estratégicos.The perspectives of nuclear energy in Brazil is analyzed regarding demand, costs, environmental, technological and strategic aspects. The projected energy demand, even for a growth rate below the desired one and considering some efforts relative to energy intensity reduction, shows the need of adding thermal energy to electricity generation, now predominantly hydraulic. Nuclear energy should have a share in this generation due to economical, environmental, technological and strategic reasons.

  14. Neutron Transport with Anisotropic Scattering. Theory and Applications. Doctoral thesis prepared at SCK-CEN and defended in 2005

    International Nuclear Information System (INIS)

    This thesis is a blend of neutron transport theory and numerical analysis. We start with the study of the problem of the Mika/Case eigenexpansion used in the solution process of the homogeneous one-speed Boltzmann neutron transport equation with anisotropic scattering for plane symmetry. The anisotropic scattering is expressed as a finite Legendre series in which the coefficients are the scattering coefficients'. This eigenexpansion consists of a discrete spectrum of eigenvalues with its corresponding eigenfunctions and the continuous spectrum [-1,+1] with its corresponding eigendistributions. In the general case where the anisotropic scattering can be of any (finite) order, multiple discrete eigenvalues exist and these have to be located to have the complete spectrum. We have devised a stable and robust method that locates all these discrete eigenvalues. The method is a two-step process: first the number of discrete eigenvalues is calculated and this is followed by the calculation of the discrete eigenvalues themselves, now being able to count them down and make sure none are forgotten. During our numerical experiments, we came across what we called near-singular eigenvalues: discrete eigenvalues that are located extremely close to the continuum and hence lead to near-singular behaviour in the eigenfunction. Our solution method has been adapted and allows for the automatic detection of such a near-singular eigenvalue. For the elements of the continuous spectrum [-1,+1], there is no non-zero function satisfying the associated eigenequation but there is a non-zero distribution that does satisfy it. It is not feasible to compute a distribution as such but one can evaluate integrals in which this distribution appears. The continuum part of the eigenexpansion can hence only be characterised by its (angular) moments. Accurate and fast numerical quadrature is needed to evaluate these integrals. Several quadrature methods have been evaluated on a representative test function. The eigenexpansion was proved to be orthogonal and complete and hence can be used to represent the infinite medium Green's function. The latter is the building block of the Boundary Sources Method, an integral solution method for the neutron transport equation. Using angular and angular/spatial moments of the Green's function, it is possible to solve with high accuracy slab problems. We have written a one-dimensional slab code implementing this Boundary Sources Method allowing for media with arbitrary order anisotropic scattering. Our results are very good and the code can be considered as a benchmark code for others. As a final application, we have used our code to study the discrete spectrum of a well-known scattering kernel in radiative transfer, the Henyey-Greenstein kernel. This kernel has one free parameter which is used to fit the kernel to experimental data. Since the kernel is a continuous function, a finite Legendre approximation needs to be adopted. Depending on the free parameter, the approximation order and the number of secondaries per collision, the number of discrete eigenvalues ranges from two to thirty and even more. Bounds for the minimum approximation order are derived for different requirements on the approximation: non-negativity, an absolute and relative error tolerance

  15. O céu noturno como cenário do tempo: uma possibilidade para o ensino de astronomia

    Directory of Open Access Journals (Sweden)

    Laryane Alves de Alcântara

    2016-06-01

    Full Text Available Buscamos neste trabalho apresentar os resultados de uma estratégia didática para o ensino de astronomia, sob a forma de oficina, desenvolvida junto a estudantes do ensino fundamental de uma Escola Família Agrícola do semiárido baiano, tendo como foco as narrativas míticas das constelações, de modo a avaliar como estas podem contribuir para uma melhor compreensão de noções que envolvem as constelações e estações do ano. Por meio desta oficina, foi possível desenvolver noções importantes sobre as estações do ano e suas relações com as constelações, ampliando os conhecimentos apresentados nos livros didáticos, distantes da realidade dos estudantes. O recurso às narrativas míticas pareceu facilitar a apreensão dos diversos significados conferidos às constelações, até então desconhecidos pelos estudantes.

  16. Obtainment of the meteorological parameters of the Juragua-Cen location in order to evaluate the radiological impact

    International Nuclear Information System (INIS)

    The Cuban climate is, in general, similar in all the territory, nevertheless there are factors, like the vicinity of warm currents, that have an effect on the western coast, and the mountains, which produce climatic particularities. According to the research achieved in the location zone, the Juragua Nuclear Power Plant, the climate is characterized by high temperatures, which present a little variation from one period to another. The average temperature of the coldest month (February), for the investigation period (1989-1993), was of 22.8 degC, with extreme minimum temperatures between 5-16 degC. The average temperatures of the warmest month (August) was of 27.3 degC reaching maximal temperatures up to 36.2 degC. The rain total fall is of 4496 mm, representing the 77% during the rainy season (May-October), comparing these output with the obtained in other accounts, these last are higher, classifying this 5 years of rainy due to the event Enos, which reported significant data of daily precipitations during the winter season of the years 1992-1993; May was the month where the total maximum of precipitations 861.3 mm was reached, meaning the 19.2% of all the period. The wind was characterized for weak, with inferior speeds to the 10 Km/h (2.80 m/s), with extreme maximum comprised between the 50 and 151 Km/h, with prevalence of the direction ENE. The distribution of cases for the different categories of stability does not show significant differences in the distribution of the gradations of stability for the different months of the year. The most frequent category is the neutral 'D'. The cases obtained with very stable category (G) coincide with terms of calm which imply a high factor of concentrations of pollutants in case of the expulsion to the atmosphere, this condition is repeated in a '10.15%'. (authors). 2 refs., 2 tabs

  17. Um cenário para a crioulização sem pidginização

    Directory of Open Access Journals (Sweden)

    Hildo Honório do Couto

    2012-11-01

    Full Text Available Abstract Taking the “principles of historical phonology” – formulated in the 30s by Jakobson – as a starting point, my aim in this article is to show that the traditional “life-cycle” model of creole grammar formation is not the best one. It presupposes the problematic concepts of pidgin and nativization. I show that a better alternative would be to consider that creole grammar is formed when the mixed medium of interethnic communication resulting from the contact of mutually unintelligible languages becomes the primary language of the emerging community. Therefore, communalization is more important than nativization. Additionally, I show that the processes which occur in creole formation are very common elsewhere.  .

  18. Towards Building a Bridge between Community Engagement in Research (CEnR) and Comparative Effectiveness Research (CER).

    Science.gov (United States)

    Ahmed, Syed M; Nelson, David; Kissack, Anne; Franco, Zeno; Whittle, Jeff; Kotchen, Theodore; Meurer, John R; Morzinski, Jeffrey; Brandenburg, Terry

    2015-04-01

    A major national priority is establishing an effective infrastructure for translation of scientific discoveries into the community. Knowledge and practice continue to accelerate in health research yet healthcare recommendation adoption remains slow for practitioners, patients, and communities. Two areas of research placed in the later stages of the translational research spectrum, Community Engagement in Research and Comparative Effectiveness Research, are ideal for approaching this challenge collaboratively. The Clinical and Translational Science Institute of Southeastern Wisconsin convened academics and community-based organizations familiar with these fields of research in a 1-day workshop to establish an initial dialogue on similarities and differences with a goal of exploring ways to operationalize a collective effort. Participants represented four academic institutions and twelve other healthcare and community-based service organizations. Primary fields of study included community engaged research, comparative effectiveness research, psychology, clinical research, administration, nursing, public health, education, and other professionals. This initial report outlines the results of this diverse discussion and provides insights into the priorities, diverging issues, and areas for future examination and practice. Key discoveries reveal clear crosscutting issues, value in philosophical and provocative discussions among investigators, a need for practice and lessons learned, and bidirectional exchange with community representation. PMID:25441215

  19. Role of CenH3/CENP-A in the regulation of centromere function and chromosome segregation

    OpenAIRE

    Lamy, Márcia Sofia Ribeiro, 1987-

    2010-01-01

    Os centrómeros são estruturas especializadas do cromossoma, com uma composição de cromatina única, que desempenham um papel chave nos processos de segregação dos cromossomas durante a mitose e meiose para além de determinarem o local de formação do cinetócoro. A formação e propagação do centrómero é um exemplo claro de um processo epigenético, isto é, estruturas proteicas são formadas ou associadas ao DNA e depois estavelmente propagadas através de numerosas divisões celulares numa maneira qu...

  20. Energia nuclear em um cenário de trinta anos Nuclear energy over a 30-year scenario

    OpenAIRE

    Carlos Feu Alvim; Frida Eidelman; Olga Mafra; Omar Campos Ferreira

    2007-01-01

    A perspectiva da Energia Nuclear no Brasil é analisada sob os aspectos demanda, custos, ambiental, tecnológico e estratégico. A demanda energética projetada, mesmo para crescimentos abaixo dos desejados e considerando algum esforço de redução da intensidade energética, mostra a necessidade de adicionar energia térmica à geração elétrica, hoje predominantemente hídrica. A energia nuclear deve ter participação nessa geração por motivos econômicos, ambientais, tecnológicos e estratégicos.The per...

  1. Ciclos longos e cenários contemporâneos da sociedade internacional Long cycles of the international society

    Directory of Open Access Journals (Sweden)

    Tullo Vigevani

    1999-01-01

    Full Text Available A despeito da anarquia que resulta da ausência uma autoridade legítima comum, as relações internacionais pós-Westphalia têm elementos de ordem que são suficientes para caracterizá-las como uma forma de "associação prática". Esses elementos são a (igual soberania nacional, a diplomacia, o direito internacional e o equilíbrio de poder. Discute-se, neste artigo, em que medida esses pilares da ordem mundial pós-Westphalia ainda se prestam para pensar as relações internacionais no pós-Guerra Fria. Trata-se de saber em que medida essas relações hoje se afastam do modelo de "associação prática" em direção a um modelo, normativamente mais exigente, de "associação de objetivos".Despite the lack of a common legitimate authority the international relations after Westphalia share enough elements of order for being characterized as a form of "practical association": (equal national sovereignty, diplomacy, international law and the balance of power. The fit-ness of those pilars of the post-Westphalian world order for thinking the international relations after the Cold War is discussed. It is asked how far those relations are leaving the model of a practical association towards another normatively more demanding model, of "goals association".

  2. Caracterizacion de carbohidratos de Chenopodium quinoa y variabilidad cenética usando marcadores de tipo RAPD.

    OpenAIRE

    Gutierrez, A; Ames, M.; Barrantes, W.; Leiva, N.

    2004-01-01

    La quinua ( Willd.) es una de las especies nativas caracterizada por su reconocido aporte nutricional y su elevada productividad. Esta especie ha sido cultivada desde hace miles de años en los Andes de Perú y Bolivia, principalmente en el Altiplano, de donde provienen la mayoría de las variedades. Las cuales se pueden diferenciar por características morfológicas del grano (tamaño, color, sabor) y otras propiedades agro-fisiológicas. Sin embargo, para fines de mejoramiento ge...

  3. Educação como terreno de epifania da cibercultura: leituras e cenários

    OpenAIRE

    Gustavo Souza Santos; Ronilson Ferreira Freitas; Vivianne Margareth Chaves Pereira Reis; Josiane Santos Brant Rocha

    2015-01-01

    Nas últimas décadas, o desenvolvimento da educação em panoramas de universalização e democratização é notório. E, paulatinamente, novos modelos e sistemas educacionais têm surgido para elevar o nível dos processos de ensino e atender a uma demanda crescente por instrução e qualificação. Nesse esteio, processos inovadores e munidos das tecnologias da informação e comunicação têm feito um rico préstimo à educação, ressignificando e transformando ensino e aprendizagem. A processão da cibercultur...

  4. Udržitelnost vývoje cen bytů v České republice

    Czech Academy of Sciences Publication Activity Database

    Lux, Martin; Sunega, Petr

    2010-01-01

    Roč. 58, č. 2 (2010), s. 225-252. ISSN 0032-3233 R&D Projects: GA ČR GA403/06/0915 Institutional research plan: CEZ:AV0Z70280505 Keywords : house prices * housing market * house price indices Subject RIV: AO - Sociology, Demography Impact factor: 0.650, year: 2010 http://www.vse.cz/polek/abstrakt.php3?IDcl=728

  5. Vztah cen ropy a cenové hladiny - případ Česká republika

    OpenAIRE

    Svoboda, Marek

    2013-01-01

    The bachelor work focuses primarily on the examination of the relationship between oil price and the price level of the Czech Republic. At the beginning of the theoretical part it describes the basic oil characteristics, creation and the different types of oil. The work then focuses on the issues of the oil price, taxes, world consumption and world reserves. It looks at the Organization of the Petroleum Exporting Countries and points at its tools and its influence on the creation of the price...

  6. Dust-grain processing in circumbinary discs around evolved binaries. The RV Tauri spectral twins RU Cen and AC Her

    CERN Document Server

    Gielen, C; Waters, L B F M; Min, M; Dominik, C

    2007-01-01

    Context: We study the structure and evolution of circumstellar discs around evolved binaries and their impact on the evolution of the central system. Aims: To study in detail the binary nature of RUCen and ACHer, as well as the structure and mineralogy of the circumstellar environment. Methods: We combine multi-wavelength observations with a 2D radiative transfer study. Our radial velocity program studies the central stars, while our Spitzer spectra and broad-band SEDs are used to constrain mineralogy, grain sizes and physical structure of the circumstellar environment. Results: We determine the orbital elements of RUCen showing that the orbit is highly eccentric with a rather long period of 1500 days. The infrared spectra of both objects are very similar and the spectral dust features are dominated by Mg-rich crystalline silicates. The small peak-to-continuum ratios are interpreted as being due to large grains. Our model contains two components with a cold midplain dominated by large grains, and the near- an...

  7. Dust-grain processing in circumbinary discs around evolved binaries : the RV Tauri spectral twins RU Cen and AC Her

    OpenAIRE

    Gielen, C.; Van Winckel, H.; Waters, L. B. F. M.; Min, M.; Dominik, C.

    2007-01-01

    Context: We study the structure and evolution of circumstellar discs around evolved binaries and their impact on the evolution of the central system. Aims: To study in detail the binary nature of RUCen and ACHer, as well as the structure and mineralogy of the circumstellar environment. Methods: We combine multi-wavelength observations with a 2D radiative transfer study. Our radial velocity program studies the central stars, while our Spitzer spectra and broad-band SEDs are used to constrain m...

  8. TL glow ratios at different temperature intervals of integration in thermoluminescence method. Comparison of Japanese standard (MHLW notified) method with CEN standard methods

    International Nuclear Information System (INIS)

    The effect of the integration temperature intervals of TL intensities on the TL glow ratio was examined in comparison of the notified method of the Ministry of Health, Labour and Welfare (MHLW method) with EN1788. Two kinds of un-irradiated geological standard rock and three kinds of spices (black pepper, turmeric, and oregano) irradiated at 0.3 kGy or 1.0 kGy were subjected to TL analysis. Although the TL glow ratio exceeded 0.1 in the andesite according to the calculation of the MHLW notified method (integration interval; 70-490degC), the maximum of the first glow were observed at 300degC or more, attributed the influence of the natural radioactivity and distinguished from food irradiation. When the integration interval was set to 166-227degC according to EN1788, the TL glow ratios became remarkably smaller than 0.1, and the evaluation of the un-irradiated sample became more clear. For spices, the TL glow ratios by the MHLW notified method fell below 0.1 in un-irradiated samples and exceeded 0.1 in irradiated ones. Moreover, Glow1 maximum temperatures of the irradiated samples were observed at the range of 168-196degC, and those of un-irradiated samples were 258degC or more. Therefore, all samples were correctly judged by the criteria of the MHLW method. However, based on the temperature range of integration defined by EN1788, the TL glow ratio of un-irradiated samples remarkably became small compared with that of the MHLW method, and the discrimination of the irradiated sample from non-irradiation sample became clearer. (author)

  9. Konkurenční výhoda - možnosti podniku v oblasti nákladů a cen

    OpenAIRE

    Kulíková, Žaneta

    2013-01-01

    The aim of this diploma thesis is to evaluate competitive ability and competitive advantages of building companies on current Czech construction market. Next, the work will asses costs and prices of the upcoming project 'Apartment buildings for social housing Milíčovský háj' from the point view of reaching maximal profit while keeping all necessary terms and conditions as well as safety conditions. The thesis is divided into two main parts. In the literature review there is characteristi...

  10. The use of single-specimen techniques for measuring upper shelf toughness properties under impact loading rates. Convention TRACTEBEL/SCK-CEN 2005 Task 1.1.5

    International Nuclear Information System (INIS)

    The multiple-specimen method (low-blow or stop-block tests) is the conventional approach for measuring the upper shelf fracture toughness of metallic materials under impact loading rates, typically fatigue precracked Charpy specimens tested on an instrumented pendulum machine. The method is fairly simple but requires a relatively large number of specimens. Nowadays, several single-specimen methods are available, which are purely based on the analysis of the instrumented force/displacement trace; they don't need any dedicated instrumentation for the measurement of crack extension during the test. Three of these techniques have been applied in this work to low-blow tests performed at different temperatures on two significantly different RPV steels (20MnMoNi55 and JSPS): the Normalization Data Reduction (NDR) technique, Schindler's Analytical 3-Parameter Approach and Chaouadi's method. Analyses have been performed after applying a double fitting approach to the raw test data, which allows selecting a limited set of force/displacement data which are representative of the whole instrumented trace. Results show that all three methods provide acceptable accuracy in terms of both ductile crack initiation and resistance to crack propagation (tearing modulus). However, for this type of analysis we recommend the use of the more widely accepted NDR technique, which is described in detail in the ASTM E1820-01 standard (although the limitations on data smoothness presently enforced in the standard seem incompatible with the oscillations of a typical dynamic PCCv curve). (author)

  11. The safety culture according to a comprehensive approach. A contribution to risk governance within complex systems. Doctoral thesis prepared at SCK-CEN and defended in 2004

    International Nuclear Information System (INIS)

    The article refers to an abstract of a doctoral thesis. This PhD is based on two evolutions within the society concerning the way to manage modern risks. It is more and more acknowledged that, firstly, rational scientific models are no longer capable to explain and manage the complexity and the diversity of risks. Secondly the supporters of a democratic conception of the risk governance claim that the risk management can benefit from the participation of the lay people to the debate. Within this framework, the study of safety culture, according to a bottom-up and comprehensive approach, in the field of the social sciences, represents an opportunity to make concrete the risk governance principle within complex system (such as a nuclear power plant and a nuclear research centre). The objectives of this PhD are the following: to appreciate the participation of the workers to the debate of the risk management within organisations; to present the lessons which can be drawn from this exercise and finally to investigate the safety culture of different groups of workers adopting an alternative view as compared to the vision as formulated in the present texts of the IAEA.The methodology was based on two techniques: observation and Focus Group. The observations were planed to feed further the Focus Group discussions with concrete examples of situations at work. We organized different Focus Group discussions with different kinds of workers (workers, managers, safety officers) in order to collect the social representation relating to the safety, the organization, the technology, the socio-economical environment and the work of each of these groups, both in the Belgian Nuclear Research Centre and in the Nuclear Power Plant of Tricastin in France. The results confirm firstly the relevance of developing a multidisciplinary theoretical framework of safety culture drawing its inspiration from sociology, social psychology, anthropology, etc. This multidisciplinary approach allows conferring to the human factor concept the complexity to integrate its different dimensions, such as the real-life situations at work. The results relate also to the pertinence, for organizations but also for politics in charge of the elaboration of a risk management policy, to consider the points of view of workers. At the political level, a question emerges from the results: How can politics (re)intervene in the effective risk management? One of the propositions is to promote a reflexive approach among people in charge of the daily risk management upon their practices and methods of risks management. The main results illustrate what can be safety culture within organizations and propose the co-existence of three different kinds of safety culture: between workers, managers and safety officers. They present the safety culture as a product of social interactions between workers, organization, technology, work, safety and the socio-economical context. These different variables shape the safety culture but also they singularize it

  12. Lasers in odontology: survey of work carried out in the laboratories of the CEN/Saclay Service of Advanced techniques and Physical Chemistry

    International Nuclear Information System (INIS)

    After carbon dioxide laser treatment the mineralised dental tissues (enamel, dentine) of humans and animals were examined by photon microscopy and subjected to Vickers microdurometric tests. They show a melted zone and a heat-affected zone which are compared with synthetic hydroxyapatite. The plates illustrate the resulting structural changes, micro-hardness increase and resistance to acid attack. The thermal diffusiveness of these tissues being slight, the heat-affected zone is not very deep under pulsed conditions. For a surface temperature of 2000C on the dental enamel the thermal gradient is 10-40C m-1 over a layer of 1 mm for a 1-second pulse duration. Bacterial cultures have demonstrated the sterilising effect of the laser. This laboratory research has so far given rise to 1200 clinical treatments on humans

  13. Inclusão da pessoa com deficiência no mercado de trabalho em Belo Horizonte, Brasil: cenário e perspectiva

    Directory of Open Access Journals (Sweden)

    Priscila Neves-Silva

    2015-08-01

    Full Text Available ResumoMesmo após a publicação da Lei 8213, em 1991, que institui cotas para contratação de pessoas com deficiência, a inclusão delas no trabalho ainda é um desafio para a sociedade brasileira. Para tentar entender as principais barreiras que impedem este processo foi realizada uma pesquisa qualitativa no município de Belo Horizonte. Este estudo contou com entrevistas com atores importantes no processo de inclusão; e grupos focais com pessoas com deficiência e seus familiares. As principais barreiras encontradas foram: preconceito e discriminação; a relação familiar; o Benefício da Prestação Continuada; a baixa qualificação das pessoas com deficiência; a falta de acessibilidade; e o despreparo das empresas. Conclui-se que a elaboração de leis não é suficiente para a inclusão no mercado de trabalho e que os governos devem implementar políticas públicas que auxiliem este processo.

  14. OUTCOME ANALYSIS OF POSTERIOR STABILIZATION OF THOR ACO- LUMBAR SPINE FRACTURES IN A RURAL TERTIARY CARE CEN TRE –AN EXPERIENCE

    Directory of Open Access Journals (Sweden)

    Prasanta Kumar

    2013-05-01

    Full Text Available ABSTRACT: Thirty five patient with unstable fractures of the lower thoracic and lumbar spine managed uniformly with Hartshill fixation and subla minar wiring were analyzed. On admission, 18 patients had complete neurologic deficit and 17 had incomplete lesions. The neurologic recovery and functional activities were assessed after an averag e follow up for 20.4 months. Improvement of neural function was seen in 71 % patients. Positive correlation was found between the level of injury and Frankel grades. The cord lesions tended to demo nstrate more severe neurologic deficit than cauda equina lesions. A component of dislocation to the injury also resulted in a more severe neural deficit. The complications were minor. Stable fixat ion of thoracolumbar spine fractures was helpful in decreasing hospital stay and recumbency period, the reby facilitating early rehabilitation of the spine injured patients.

  15. Ionizing radiation induced transcriptional changes in the developing mouse brain. Doctoral Thesis Prepared at SCK-CEN and Defended in 2006

    International Nuclear Information System (INIS)

    Brain damage induced by prenatal irradiation is of major concern in radioprotection. The brain is the final result of a series of well timed consecutive waves of cellular proliferation, migration, and differentiation. Acute irradiation during pregnancy could selectively disturb these events to result in various forms of malformations such as microencephaly, reduced cortical thickness, glioblastoma tumours and/or mental retardation. In this work we concentrated on the transcriptional alterations induced by ionising radiation in the mouse developing brain and its different cell-types. Using cDNA-microarrays and real-time PCR, we analysed the modulated gene expression profile after 50 cGy X-ray exposure in embryonic mouse total brains at three developmental stages. Functional grouping of the modulated mRNA transcripts revealed that the main activated pathways in irradiated wild type embryos are involved in the induction of Trp53 dependent programmed cell death and intracellular signalling cascades. The strong upregulation of Ccng1, Trp53inp1 and Cdkn1a suggested that the tumour suppressor P53 protein is an essential regulator of the radiation induced stress response. Moreover, a decreasing expression profile could be identified at later development, suggesting a reducing sensitivity to radiation. The information obtained lead to a subsequent experiment in which the ionising radiation response in P53 deficient embryonic brains at the same developmental stages was determined. Since both genotypes showed the strongest gene expression modulation at developmental stage E13, we concentrated our initial analysis on this developmental stage. In one hand, wild type embryos show a strong upregulation for Trp53inp1 and Ccng1 in the irradiated E13 mouse brain was observed. Considering the fact that they are involved in similar functions, and that Trp53inp1 is less strongly induced then Ccng1, let us suggest that P53 is tightly regulated through different mechanisms after radiation exposure. The Trp53 null mutants at this stage exhibited a decreased expression profile for various Cyclins and Cyclin-dependent kinases, suggesting the induction of a Trp53 independent cell cycle arrest. The observed absence of high levels of apoptosis is in concordance with the described phenotype of Trp53 null mutant mice that show an increased risk for tumour formation. Next, we questioned if the developing brain is characterized by a regional dependent differences on radiation sensitivity. Therefore, additional transcriptional analyses of the different regions (hippocampus, pallidal neuroepithelium and cortex of control and irradiated brain embryos) of the ventral wild type brain at E15 were performed. In these three regions of the developing brain, the differential expression of Trp53inp1 and Ccng1 by in situ hybridization suggested that the ventral brain shows a specific regional dependent expression pattern. This was further evidenced by real time qPCR, by which it also became clear that the strongest radiation induced effect can be observed in the cerebral cortex. However, this experiment didn't allow making a distinction between neural cells in this experiment, and different cell types contribute to correct neural network formation. Detailed analysis of cultured and irradiated neural cell types indicated that the expression of the Trp53inp1/Hipk2 and Ccng1/Mdm2/P19Arf signalling pathways are activated in a cell-type dependent matter. From this data it appears that, depending on the cell type and the stage of differentiation, two possible mechanisms for the induction of apoptosis are activated. In one hand cell cycle arrest occurs via P21 (Cdkn1a) induction and to certain extends via P19ARF in the mitotic astrocytes, while in short-term neurons this mechanism seems to be preferentially induced by Cyclin G1. This arrest is then followed by the induction of the mitochondrial proapoptotic pathway. Interestingly, long term cultured neurons show also an induction of apoptosis after 50 cGy ionising radiation, but they were not characterized by an increased expression of Cdkn1a. The elimination of neurons or their supporting cells can thus result in an impaired brain functioning, with the risk of causing cognitive dysfunctions, even in the more mature brain

  16. Study of radiation effects in FeCr alloys for fusion applications using computer simulation. Doctoral Thesis Prepared at SCK-CEN and Defended in 2006

    International Nuclear Information System (INIS)

    Radiation effects in FeCr alloys, as model materials for ferritic/martensitic steels, using computer simulation tools, were studied in order to provide interpretation of the experimentally observed effect of Cr on the radiation response of these alloys, as compared to Fe. In particular, after assessing the effect of Cr on the primary damage state (displacement cascades), the migration properties and mutual interactions of thereby produced defects and their clusters, are investigated using Molecular Dynamics simulations. Phase separation processes under thermal ageing are treated with the help of Monte Carlo techniques. Rate theory equations are finally applied to reproduce the defect annealing stages in Fe and Fe-Cr alloys, using the results obtained in this work. The results obtained show that the thermodynamic properties of the Fe-Cr system can be reproduced, using semi-empirical interatomic potentials, in good agreement with experimental and ab initio data. The primary damage state distributions (such as number of produced defects, volume and density of created atomic cascades) are not affected by the presence of Cr. Whereas the effective migration energy and the diffusion coefficient of the interstitial defects are lower in FeCr alloys (of studied concentrations) than in pure Fe, the migration energies of small 3D migrating SIA clusters being much higher than those in pure Fe. With the increase of the Cr concentration, therefore, the diffusivity of 1D migrating interstitial clusters drops, reaches a minimum and then rises again. The depth of the minimum and the critical concentration at which the minimum is reached depend on the size of the interstitial cluster. This effect was explained by the existence of a strong interaction between crowdion and Cr atoms. The main impact of this effect was seen on small SIA clusters, with sizes up to one hundred interstitials. An explanation for the origin of the experimental measured swelling vs Cr concentration is proposed, relying on the observations of the non-monotonic dependence of SIA cluster mobility on Cr content and the results on the interaction between Cr-rich precipitates and SIA clusters. A description of the defect annealing stages in Fe and FeCr has been given by applying rate equation (RE) methods, using the results on mobility of defects for the parameterization. The obtained results show that the application of the RE method for the description of the defect annealing provides very close results to those obtained by other researchers using the a kinetic Monte Carlo method, and in agreement with experimental results. The parameterization of defect migration properties obtained in the present work also predicts the positions of the recovery peaks in Fe, in good agreement with experimental data, but corresponds to an alternative interpretation of the recovery stages, based on the ideas of the existence of sessile configurations for small SIA clusters. Finally, the calculation of the defect recovery in Fe-Cr alloys (with CCr = 5, 10 and 15%) has shown that reasonable agreement for stage I, II and III is obtained, assuming the presence of traps (of one type only) for single SIAs. The concentration of traps and their trapping energies depend on the Cr content in the alloy. An approximate estimation of their values is given in this work

  17. A positionism epitomology applied to small group decision-making in radioactive waste management. Doctoral thesis prepared at SCK-CEN and defended in 2004

    International Nuclear Information System (INIS)

    The article refers to an abstract of a doctoral thesis. Assuring the safety of technological developments is becoming one of the most important tasks in society. For nuclear waste repositories, it is important to know what will remain valuable of current performance and safety assessments within a few hundred years. The core of the PhD concerns the meaning that can be attributed to safety assessments. This study develops a new philosophical theory to explain how small group decision-making on technoscientific problems takes place. It is applied to the specific problem of decision-making on radioactive waste disposal and its related risk assessment. The new philosophical theory is based on Latour's interactionism theory, which in its essence states that facts are only facts if they are accepted by the network. The theory adds that fact-building or decision-making happens in a certain context by interaction of different context elements. The word context has a very specific meaning. It refers to a problem solving situations in which individuals work out a problem framing and use attitudes, personalities, group cultures, and objects. Decisions or fact-building within the group will happen by interaction between these context elements that will get different hierarchical positions and lead to contextual dissonance reduction. This is called positionism. An international questionnaire has been carried out asking for estimations by technologists and scientists of the risks and uncertainties of a high level waste repository on the one hand and their personality, group culture and background characteristics on the other hand. Two important indicators occur. High neuroticism -a personality measure indicating the general tendency to experience affects such as fear, sadness, or distrust- correlates with high assessments of the waste repository risks. Scientists with high confidence in science give significant lower estimations of the repository risks. These results illustrate in a qualitative way the contextual point of view of the philosophical theory. Observations of the Belgian low level waste decision-making process have been made over a period of four years. These observations do not give an historical construction of the process but are used as an illustration of positionism mechanisms. They show that certain argumentations on technology are positioned above others because of contextual aspects. These results illustrate in a qualitative way the positionism theory and its actual applications

  18. A cidade colonizada pela mídia: poluição da comunicação no cenário urbano

    OpenAIRE

    Carlos Henrique Aiello

    2007-01-01

    The innumerable transformations of the urban scenery - as the exaggerated use of externai media during the last years - derived from the mercantile disputes supported by publicity strategies, result in a new dynamic and social configuration ofthe cities, reinforced by a cultural colonization which is becoming more and more present nowadays.

  19. Educação moral hoje: cenários, perspectivas e perplexidades Moral education nowadays: scenarios, perspectives and perplexities

    Directory of Open Access Journals (Sweden)

    Pedro Goergen

    2007-10-01

    Full Text Available Partindo da constatação de que a moral é um dos mais discutidos e polêmicos temas da sociedade contemporânea, o autor observa uma relação entre a visibilidade do debate moral e a gravidade das práticas imorais. Na tentativa de encontrar caminhos que conduzam à mudança dessa realidade, desenvolve o argumento de que os problemas morais não se restringem apenas ao comportamento desse ou daquele grupo social, desse ou daquele indivíduo, mas que eles se encontram intrinsecamente relacionados às tradições, aos costumes e aos valores que constituem o ethos histórico-cultural da sociedade. Por isso, entende que a superação da barbárie moral não pode ser alcançada mediante intervenções e sanções tópicas, locais, superficiais, mas que é necessário um repensar amplo e corajoso dos arquétipos de nossa cultura no que se refere aos conceitos de cidadania, democracia, justiça social e espaço público. O autor defende a tese de que a educação moral, para além da tradicional disciplinarização, deve centrar-se na formação dialógica do sujeito moral, tendo como escopo a virtude da justiça.From the statement of fact that moral is one of the most discussed and polemical topics in our contemporaneous society, the author observes a relationship between the visibility of the moral debate and the seriousness of immoral practices. In an attempt to find paths that lead to change this reality, he develops the argument that the moral problems are not restricted to the behavior this or that social group or individual, but that they are intrinsically related to the traditions, customs and values that constitute the historical-cultural ethos of society. He thus understands that moral barbarism cannot be overcome through interventions and topical, local or superficial sanctions, but that we need rethinking widely and courageously the archetypes of our culture in what regards the concepts of citizenship, democracy, social justice and public space. The author advocates the thesis that, beyond the traditional disciplinarization, moral education must focus on the dialogical training of the subject's moral, with the virtue of justice in our scope.

  20. Procedures and techniques for monitoring the radiation detection, signalization and alarm systems in the centralized ambience monitoring systems of the basic nuclear facilities of the CEN Saclay

    International Nuclear Information System (INIS)

    After referring to the regulations governing the 'systematic ambience monitoring' in the basic nuclear facilities, the main radiation detection, signalization and alarm devices existing at present in these facilities of the Saclay Nuclear Study Centre are described. The analysis of the operating defects of the measuring channels and detection possibilities leads to the anomalies being classified in two separate groups: the anomalies of the logical 'all or nothing' type of which all the possible origins are integrated into a so-called 'continuity' line and the evolutive anomalies of various origins corresponding to poor functioning extending possibly to a complete absence of signal. The techniques for testing the detection devices of the radiation monitoring board set up in the 'Departement de Rayonnements' at the Saclay Nuclear Study Centre are also described

  1. Desfiando o novelo ficcional: Lúcia Miguel Pereira e a representação do cenário político

    Directory of Open Access Journals (Sweden)

    Edwirgens Aparecida R. Lopes de Almeida

    2013-09-01

    Full Text Available Resumo: Reconhecida por seu trabalho como crítica literária, Lúcia Miguel Pereira é pouco conhecida como romancista. O presente estudo tem o propósito de ‘apresentar’, de modo sucinto, as três narrativas de ficção Maria Luísa, Em Surdina e Amanhecer publicadas na década de 30 tendo em vista a vinculação da ficção aos acontecimentos daqueles tempos e, sobretudo, ao espírito ideológico predominante naquele contexto. Se a crítica literária contemporânea dos anos 30 reconheceu, na literatura nacional desse período, duas vertentes de escrita, a literatura social ou proletária e a literatura intimista ou psicológica, este estudo pretende ainda discutir a observação de Jorge Amado que acusa a autora de produzir romance engajado, subordinando conscientemente a criação a uma doutrina. Frente a esse apontamento do escritor baiano, notamos que, mais relevante que a vinculação da autora ao pensamento de direita ou de esquerda é o trabalho de representação de aspectos muito sutis da condição política e social daqueles tempos que foram ‘recriados’ pela autora, e transformados em elementos internos conduzindo a trajetória das personagens, principalmente femininas, e configurando, dessa forma, a razão de ser, sobretudo da obra Em Surdina. Se, para Jorge Amado, esses aspectos impediram o desenvolvimento da narrativa, a nosso ver, eles revelaram inquietações, anseios e temores femininos que integraram tanto a ficção quanto a crítica de Lúcia Miguel Pereira, dando forma assim a uma escrita intimista bastante coerente com o discurso predominante. Sendo assim, por vezes, a leitura dos relatos de ficção conduzem a uma revisão da subjetividade da autora associando-a àquelas subjetividades construídas em suas ‘criaturas de papel’.Palavras-chave: Ficção; história; crítica; década de 30; mulher. Abstract: Recognized for her work as a literary reviewer, Lucia Miguel Pereira is little known as a novelist. The present study aims to ‘present’, succinctly, the three fiction narratives Maria Luísa, Em Surdina e Amanhecer, published in the 30s, in order to link the fiction to the events of those times, especially, to the ideological spirit prevailing in that context. If the contemporary literary criticism of the 30s recognized, in the national literature of that period, two lines of writing, that is, the social or proletarian literature and the intimate or psychological literature, this study also intends to discuss Jorge Amado’s observation which accuses the author of producing novels inspired by personal interests, thus consciously subordinating the creation to a doctrine. Considering that remark by the writer from Bahia, we note that more relevant than the author’s bond to conservative or liberal thought is her effort of depicting very subtle aspects of political and social condition of those times which have been ‘recreated’ by her and changed into internal elements, leading the characters’ path, especially the female characters, and, therefore, setting the reason for being, mainly in the work Em Surdina. If, for Jorge Amado, those aspects have hindered the narrative’s development, in our view, they have revealed concerns, anxieties and women’s fears, which had made part of Lucia Miguel Pereira’s work, both in the fiction and in textual criticism, thus shaping an intimate written style quite consistent with the prevailing discourse. So, at times, the reading of the fiction narratives lead to a revision of the author’s subjectivity, by associating it to those subjectivities which have been framed in her “paper creatures”.Keywords: Fiction; history; criticism; decade of 30; woman.

  2. Ciência do Esporte no Brasil: reflexões sobre o desenvolvimento das pesquisas, o cenário atual e as perspectivas futuras

    OpenAIRE

    Luís VIVEIROS; Moreira, Alexandre; Bishop, David; Marcelo Saldanha AOKI

    2015-01-01

    O Brasil foi, recentemente, palco de um dos eventos esportivos mais importantes do mundo, a Copa do Mundo de Futebol de 2014 e, em um futuro próximo, irá sediar os Jogos Olímpicos de Rio 2016. Esses eventos podem ser considerados como uma grande oportunidade para desenvolver a Ciência do Esporte no Brasil. A Ciência do Esporte pode ser definida como o processo científico utilizado para orientar a prática do Esporte, com o objetivo, em última instância, de melhorar o desempenho esportivo. No e...

  3. Desenvolvimento de cenários de sustentabilidade num contexto empresarial: motivações, abordagens e avaliação de resultados

    OpenAIRE

    Verdelho, Maria Catarina Ribeiro da Fonseca

    2013-01-01

    A atitude das empresas tem vindo a evoluir no sentido da adoção de práticas de sustentabilidade, o que poderá traduzir-se numa vantagem competitiva. Neste sentido, foram desenvolvidas ferramentas que lhes permitiram prosseguir este objetivo. Contudo, o mundo está repleto de complexidades e incertezas que influenciam constantemente o modelo de negócio das organizações. Se quiser imperar e manter-se competitiva, uma organização necessita saber lidar e adaptar-se a essas possíveis alterações no ...

  4. Gestão ambiental e democracia: análise crítica, cenários e desafios Environmental management: critical analysis, scenarios and challenges

    OpenAIRE

    Marcelo Firpo de Souza Porto; Gabriel Eduardo Schütz

    2012-01-01

    O artigo discute limites, alternativas e desafios da gestão ambiental nas sociedades contemporâneas inseridas no capitalismo globalizado a partir de uma análise crítica apoiada em autores das ciências sociais, da ecologia política e da saúde coletiva. Para isso, sistematizamos o significado da gestão ambiental hegemônica em sua vertente da ecoeficiência e seus limites para o enfrentamento dos riscos ambientais e para a construção de processos e sociedades mais democráticos. Construímos quatro...

  5. Gestão ambiental e democracia: análise crítica, cenários e desafios.

    OpenAIRE

    Porto, Marcelo Firpo de Souza; Schütz, Gabriel Eduardo

    2012-01-01

    O artigo discute limites, alternativas e desafios da gestão ambiental nas sociedades contemporâneas inseridas no capitalismo globalizado a partir de uma análise crítica apoiada em autores das ciências sociais, da ecologia política e da saúde coletiva. Para isso, sistematizamos o significado da gestão ambiental hegemônica em sua vertente da ecoeficiência e seus limites para o enfrentamento dos riscos ambientais e para a construção de processos e sociedades mais democráticos. Construímos quatro...

  6. Planejamento de cenários e amplificação da variabilidade da demanda Planning scenarios and amplification of variability demand

    Directory of Open Access Journals (Sweden)

    Marina Dais de Faria

    2011-12-01

    Full Text Available Este caso para ensino foi elaborado a partir dos problemas enfrentados pela DELTA, líder no mercado brasileiro de controle de pragas urbanas, a partir da epidemia de dengue do verão de 2007/2008, quando as vendas de inseticidas e repelentes pelos players do setor atingiram volumes significativamente superiores às expectativas. Falhas na previsão de demanda causaram escassez de produtos nos pontos de venda, desgastes no relacionamento da empresa com seus revendedores, dificuldades nas unidades de produção e também perda de participação de mercado da DELTA e da vice-líder GAMA para marcas alternativas. A natureza dos problemas levantados sugere questionamentos que envolvem a estrutura da indústria e a constituição da arena do mercado, bem como decisões de governança, gestão e gerência envolvidas na configuração do próprio negócio. Construída a partir de dados coletados por meio de pesquisa bibliográfica, investigação documental e técnicas de observação direta, a narrativa se desdobra a partir das idéias de incerteza, transformação organizacional e integração, proporcionando possibilidades de aproveitamento do caso em disciplinas de Estratégia, Marketing, Produção e Ética, preferencialmente em cursos de graduação ou em matérias básicas de programas de pós-graduação.This case was based on the problems facing the Delta, a leader in the Brazilian urban pest control, from the dengue epidemic in the summer of 2007/2008, while sales of insecticides and repellants by industry players reached volumes significantly higher than expectations. Failures in forecasting demand caused shortages of products to sell, wear the company's relationship with its dealers, difficulties in production and also loss of market share from DELTA and GAMMA deputy leader for alternative brands. The nature of the problems suggests questions involving the structure of industry and the establishment of the marketing arena, as well as decisions on governance, administration and management involved in setting up own business. Constructed from data collected through literature review, desk research and direct observation techniques, the narrative unfolds from the ideas of uncertainty, organizational transformation and integration by providing opportunities for exploiting the case in disciplines of Strategy, Marketing, Production and Ethics, preferably at the graduate level or raw materials of post-graduation.

  7. Raul Seixas e o cenário musical brasileiro na década de 1970 * Raul Seixas and the Brazilian music scene in the 1970s

    Directory of Open Access Journals (Sweden)

    LUCAS MARCELO TOMAZ DE SOUZA

    2013-08-01

    Full Text Available Resumo: Este trabalho possui dois objetivos distintos, porém complementares. O primeiro visa pensar a estruturação do mercado fonográfico brasileiro durante a década de 1970, focando a inserção do cantor e compositor Raul Seixas no mesmo. O segundo objetivo é o de analisar o LP Krig-ha Bandolo! de Raul Seixas, lançado em 1973, pela Philips, como forma de compreendermos as possíveis relações existentes entre a sua produção musical e as demandas comercias e simbólicas que sobre ele recaiam.Palavras-chave: Raul Seixas – Música Popular – Rock e Indústria Cultural na Década de 1970. Abstract: This paper has two distinct goals, however they complement each other. The first one aims to think the structural organization of the Brazilian phonographic market during the 70s, focusing on the participation of the singer and songwriter Raul Seixas. The second goal is the analysis of Raul Seixas’ LP Krig-ha Bandolo!, released in 1973 by Philips, as a way of understanding the possible existing relations between him and his musical production and the commercial and symbolic demands that he had to deal with.Keywords: Raul Seixas – Popular Music – Rock and 1970's cultural industry.

  8. Visual culture and sceneries of narratives and memories ///// Cultura visual e o cenário das narrativas e memórias

    Directory of Open Access Journals (Sweden)

    Eliane Jordy Iung

    2012-12-01

    Full Text Available A cultura visual deve ser tratada desde um ponto de vista muito mais ativo se baseando no papel determinante que ela desempenha na cultura mais ampla à qual pertence como afirma Mirsoeff (2003. Nesse sentido, ela realiza aqueles momentos nos quais o visual se põe no interdito, se debate e se transforma como um lugar sempre desafiante de interação social e definição em forma de classe, gênero e identidade. Neste artigo será apresentado um relato sobreo encontro de uma das autoras, quando menina, com a escritora Carolina Nabuco, tendo nos levado a refletir sobre a função principal da cultura visual – segundo as palavras do autor acima citado - de poder dar sentido a variedade infinita de realidade exterior mediante a seleção, interpretação e representação da dita realidade. ///// The visual culture should be treated from a point of view much more active based on the role determining that it plays in the larger culture to which it belongs as stated Mirsoeff (2003. In this sense, it performs those moments when the visual goes down in the interdict, struggles and turns as a place where social interaction and challenging setting in the form of class, genderand identity. This paper deals with a story about meeting with the writer Carolina Nabuco and one of the authors, as a girl, having led the authors of this paper to reflect on the main function of visual culture - in the words of the author quoted above - visual culture has the power to make sense of infinite variety of external reality through the selection, interpretation and representation of that reality.

  9. Alegrias e tristezas no cotidiano de trabalho do agente comunitário de saúde: cenários de paixões e afetamentos

    Directory of Open Access Journals (Sweden)

    Heletícia Scabelo Galavote

    2013-09-01

    Full Text Available O estudo busca desvendar o processo de trabalho do agente comunitário de saúde (ACS com base na teoria das afecções de Espinosa. Considera o encontro como uma unidade de análise, e pretende compreendê-lo na sua dinâmica de produção do cuidado, analisando as afecções que se expressam por alegrias e tristezas e os seus efeitos no trabalho do ACS. Trata-se de estudo exploratório-descritivo, de caráter qualitativo, realizado na Unidade Jardim Catarina, São Gonçalo, Rio de Janeiro, Brasil. Os dados foram coletados em entrevista com dez ACS's, por meio de roteiro semiestruturado e observação etnográfica. O estudo revela um ACS múltiplo, exposto às afecções das relações que mantém, variando entre o reconhecimento e a submissão às lógicas instituídas, resultando em alegria e tristeza, aumento e redução da sua potência de agir, respectivamente.

  10. De que se veste um espectáculo? - Metodología e processo criativo do cenário e figurinos na obra teatral The Passage

    OpenAIRE

    SANTOS SILVA, SUSANA

    2016-01-01

    [EN] This work explores the methodology and the creative process of the set and costume design in the devised show The Passage and how the visual aspects were supporting the construction and the meaning of the show. Our proposal goes towards thinking of the set and the costume design as part of a dramaturgy. The scenic creation of this project was being woven as the contributions of each participant to the development of the characters and the story. The aim of this thesis is the analysis of ...

  11. Skalní řícení na hradě Jestřebí a jeho příčiny

    Czech Academy of Sciences Publication Activity Database

    Adamovič, Jiří; Kaňková, H.

    2010-01-01

    Roč. 19, - (2010), s. 137-162. ISSN 1211-9172 R&D Projects: GA AV ČR IAA300130806 Institutional research plan: CEZ:AV0Z30130516 Keywords : rockfall * Bohemian Cretaceous Basin * sandstone * Jestřebí Castle (Czech Republic) Subject RIV: DB - Geology ; Mineralogy

  12. SCK-CEN Contribution to the''Relation between different measures of exposure-induced shifts in ductile-brittle transition temperatures'' (REFEREE). Progress Report

    International Nuclear Information System (INIS)

    The relationship between Charpy-V (CVN) impact, fracture toughness and tensile properties for selected reactor pressure -vessel steels in the transition temperature range are investigated. Data on the testing of unirradiated material are reported. The applied methods include chemical analysis, Charpy-V impact testing, tensile testing and fracture toughness determination

  13. Sv. Mikuláš Tolentinský rozděluje posvěcené chlebíčky

    Czech Academy of Sciences Publication Activity Database

    Vácha, Štěpán; Šroněk, Michal

    Praha: Národní galerie, 2010 - (Stolárová, L.; Vlnas, V.), s. 66-67 ISBN 978-80-7035-458-2 Institutional research plan: CEZ:AV0Z80330511 Keywords : altare pieces * baroque painting * Karel Škréta Subject RIV: AL - Art, Architecture, Cultural Heritage

  14. Ošetřovatelská péče o pacienty s krvácením do GIT

    OpenAIRE

    HOLZÄPFELOVÁ, Soňa

    2011-01-01

    Gastrointestinal bleeding is a symptom of numerous diseases that might be serious. Acute GI bleeding is the most frequent abdominal incident and has been occurring more and more often recently. Acute bleeding in the upper GI tract is a very urgent state affecting circulation stability. The bleeding may have adverse consequences. This is why a quick intervention and immediate bleeding stoppage are very important here. The aim of the thesis was to determine the principles of nursing care for pa...

  15. The Nuclear Structures of Cen A, M87 and 3C273 at Very High Resolution with RadioAstron and the LBA

    Science.gov (United States)

    Reynolds, Cormac; Lobanov, Andrei; Giovannini, Gabriele; Orienti, Monica; Tingay, Steven; Kovalev, Yuri; Krichbaum, Thomas P.; Savolainen, Tuomas; Anderson, James M.

    2013-10-01

    We request 30 hours of LBA time to perform perigee imaging observations with the RadioAstron orbiting VLBI antenna. RadioAstron provides a unique opportunity to image nearby AGN at unprecedented resolution and will allow us to address fundamental questions related to the jet formation process in AGN. The proposed observations can reveal the nuclear structures in these objects down to scales of just a few Schwarzschild radii, a resolution that will allow us to compare observational data on the region where the jets are launched and collimated to the predictions of analytical models and simulations.

  16. Patrimônio Cultural e Turismo: Cenários sobre o Município de Inhambane, Moçambique

    Directory of Open Access Journals (Sweden)

    Pelágio Julião Maxlhaieie

    2014-10-01

    Full Text Available O presente artigo perpassa as relações que podem ser estabelecidas entre patrimônio cultural e Turismo na [re]organização dos lugares turísticos outrora constituídos pela influência quase que exclusiva dos componentes do patrimônio natural. Por meio da análise e reflexão, constatamos que o Município de Inhambane, Moçambique, apresenta potencial turístico a partir da combinação única das condições do seu litoral – o qual dispõe de uma faixa de areia, condições únicas para a prática de mergulho, pesca desportiva –, com a herança árabe e colonial portuguesa presente na sua cidade antiga, ambos associados à beleza paisagística do patrimônio natural ali presente. Ao refletirmos sobre a importância do patrimônio cultural na diversificação da oferta turística, em atividades complementares e/ou substitutas às tradicionais formas de Turismo, observamos que por meio da [re]ativação deste patrimônio, quase desconhecido dos turistas e das instituições culturais locais, sugerimos que o município pode de forma sustentável [re]apropriar-se e se reconstituir, [re]produzir-se e ser consumido por novas tipologias de Turismo emergente/alternativo, ávidas pela utilização do patrimônio cultural, e não só pelo desfrute do tradicional Turismo de sol e mar, já presente neste município.   Cultural Heritage and Tourism: Setups for the Inhambane Municipality in Mozambique – This article goes through the relationships that can be established between cultural heritage and Tourism, in order to [re]organize the tourist places once constituted almost exclusively by the influence of the natural heritage components. After reflection, it was observed that Inhambane Municipality has a touristic potential, ranging from combination of coastline which features a strip of sand, unique conditions for scuba diving, sport fishing, and the ancient Arab city and Portuguese colonial, even the contemplation of an environment full of natural heritage. As we reflect about the meaning of cultural heritage in the diversification of the Tourism offer in complementary and/or substitute the traditional forms of Tourism activities, we observe that by the [re]activation of this heritage, almost unknown by the tourists and the local cultural institutions, we think that in a sustainable county can [re]appropriating and reconstructing, [re]produce and  consumed by new types of emerging/alternative Tourism, eager for the use of cultural heritage, and not only by traditional sun and sand tourism, existing in this municipality. 

  17. Neutron measurements for innovative fuel cycle and transmutation performed at the CEN Bordeaux-Gradignan : transfer techniques applied to the protactinium case

    International Nuclear Information System (INIS)

    Transfer reaction techniques have been used to determine neutron induced fission cross section (σn,f) of the short lived 233Pa nucleus, which is of importance for the Th-U fuel cycle for innovative reactors. The σn,f of 233Pa has been determined from the product of the fission probability of 234Pa measured in transfer reaction 232Th(3He,p) with the calculated compound nucleus formation cross section in the 233Pa+n reaction. The validity of this method has been tested with the existing data for direct neutron experiments on long-lived target nuclei 231Pa and 230Th. Transfer reaction techniques have been used too for the determination of capture cross section (σn,y) of 233Pa. This method will be extended to other highly radioactive actinides (such as 242-245Cm isotopes). (author)

  18. A lógica da competição política municipal em “cenários oligárquicos”

    Directory of Open Access Journals (Sweden)

    Cleber de Deus

    2011-06-01

    Full Text Available O presente artigo tem por propósito mostrar como a competição política em âmbito municipal foi afetada pelo impacto do novo arranjo federativo brasileiro pós-1988 e pela introdução do sistema multipartidário. A análise comparada de mais de 400 municípios detectou importantes alterações no processo de competição eleitoral e partidária nas disputas municipais: houve modificações no padrão descrito pela literatura que se dedica a estudar o fenômeno do poder local. A tese central, presente na literatura municipalista, declarava que a causa da “oligarquização” dos subsistemas partidários locais era a centralização de recursos e decisões no Executivo Federal. A alteração das regras objetivando descentralizar as competências e funções provocou um realinhamento das disputas eleitorais e políticas nos contextos tidos como oligárquicos[1].

  19. Strategie při stanovení převodních cen v období hospodářské krize

    OpenAIRE

    Skrbková, Lucie

    2011-01-01

    In the most cases the market range of transfer pricing is determined from statistical data from previous years. In case of these data the time delay occurs when these data are collected and these data do not reflect if that are collected for period of economical growth or recession. As a result, the final transfer pricing range can become distorted. For this reason it is essential to be familiar with strategies and procedures that can be applied to "clean up" statistical data from the influen...

  20. Redes neurais artificiais na classificação de frutos: cenário bidimensional Fruit sorting using artificial neural networks: bidimensional case

    Directory of Open Access Journals (Sweden)

    Jean Paulo Silva Ramos

    2003-04-01

    Full Text Available Inúmeras são as atividades agrícolas que necessitam de interação humana nos processos decisórios, e entre elas encontra-se a classificação de frutos. O consumo de frutos "in natura" exige altíssimo nível de qualidade, demandando um processo classificatório mais acurado. A classificação de frutos depende do reconhecimento de padrões natural ou artificial, de acordo com algumas categorias pré-definidas. Uma vez que um padrão de um fruto está sendo classificado, esse deve ser comparado com algum outro padrão armazenado. A maior parte da classificação de frutos é baseada na classificação humana.Este trabalho apresenta a possibilidade de uso de redes neurais artificiais no desenvolvimento de modelos de classificação de frutos por meio de vetores de padrões. Este trabalho foi desenvolvido no Departamento de Máquinas Agrícolas da Faculdade de Engenharia Agrícola da Universidade Estadual de Campinas, as redes neurais armazenaram os vetores de padrões de frutos peso, diâmetro. Esses componentes vetoriais associados entre si interagiram, determinando um vetor padrão de saída de acordo com os padrões de frutos armazenados. Para atingir esses objetivos, foi usada uma rede Perceptron de múltiplas camadas, com algoritmo de treinamento tipo retro-propagação para armazenar os vetores de padrões de frutos e para classificação desses padrões de entrada. A rede treinada conseguiu aprender a relação entre vetores de entrada e saída, demonstrando a potencialidade do uso de tais ferramentas na classificação artificial.Agriculture is one of the economic activities that more require the presence human being in the decision taking. Innumerable are the processes that require some type of human being interference in the conclusion of the processes. Fruit Sorting depends on human or artificial pattern recognition according to some pre defined categories. Once a fruit pattern is under classification, this one must be compared to some other ones stored. After that comparison it can be classified. Most sorting fruits jobs are human basis classification. This paper shows that using neural networks is possible to develop capable models of storing fruit pattern vectors. Given any fruit pattern vector to the model it can classify to the closest fruit pattern vector stored. The number of patterns were incremented and presented to the neural networks, classifying the presented fruits and proved the scalability of number of vector components used in fruit pattern vectors stored in the model. This work was developed in the Agricultural Machinery Department of the Agricultural Faculty in State University of Campinas, the neural networks stored fruit pattern vectors such as Weight, Diameter. These vectors components associated itself interacted determining an output pattern vector classifying according to the stored fruit vector patterns. A Multi Layer Perceptron Network with Backpropagation algorithm was used, storing the relationship between input fruit pattern vectors and output classification class vectors. The neural network was trained and tested presenting the desired results, it can be used as a tool for future fruit classification processes.

  1. Brazilian Social Psychology in the international context: a commentary A Psicologia Social brasileira no cenário internacional: um comentário

    OpenAIRE

    Joaquim Pires Valentim

    2013-01-01

    The present paper is a commentary on the talks given by Torres and Álvaro and by Krüger regarding Brazilian Social Psychology in the international context. Starting with a brief contrast with the situation in Portugal, this commentary next approaches, in a synthetic way, questions that cut across social psychology in the international setting, namely, those related with the recurrent dichotomy individual/collective, the great advances in social neuroscience, the study of minorities, the scarc...

  2. A questão do petróleo no Brasil: reflexões sobre o cenário atual

    OpenAIRE

    Fernandes, Mariana Ribeiro

    2014-01-01

    A presente resenha destaca a contribuição da obra organizada pelos geógrafos Fréderic Monié e Jacob Binsztock sobre o tema do petróleo. Este tema carrega extrema relevância política e econômica desde que o petróleo tornou-se o principal combustível da matriz energética mundial, isto é, durante o século XX (COSTA, 2012, p. 56). Além do mais, desde 2000 fatores de cunho geopolítico aumentam o sentimento de insegurança energética das nações (MONIÉ, 2012, p.211). Geografia e Geopolítica do Petró...

  3. Os cenários de aprendizagem: espaços de cuidado, conhecimento, poder e cidadania na formação do enfermeiro

    Directory of Open Access Journals (Sweden)

    Carmen Maria dos Santos Lopes Monteiro Dantas Silva

    2010-01-01

    Full Text Available Diario encontramos espacios de poder y ciudadanía en que se desarrolla: la asistencia, la investigación, y la formación profesional. Esto artigo tiene como objeto de estudio: la importancia de escenarios de aprendizaje para la formación de los estudiantes de enfermería. Los objetivos son describir la importancia de los escenarios de aprendizaje, para el estudiante de enfermería y analizar la importancia de escenarios de aprendizaje en la formación. Se uso la investigación cualitativa, de junio a julio/2008, en la Universidad Centro / RJ. Los temas son 41 estudiantes del 1er periodo de Enfermería, la 3ª clase para integrar el nuevo plan de estudios de metodologías activas. Los datos se agruparon en cuatro unidades temáticas: el espacio para el conocimiento y el aprendizaje; área de la reconstrucción de las experiencias de la enfermería; zona de la escuela y de la ciudadanía, los aspectos de la vida, ideas, conocimientos, información, preguntas y experiencias. Los estudiantes destacaron los escenarios aprender a cuidar los espacios, el poder y la ciudadanía para la formación profesional.

  4. Dilemas e desafios da educação contemporânea: uma (re) leitura de Paulo Freire no cenário de Immanuel Wallerstein

    OpenAIRE

    José Eustáquio Romão

    2005-01-01

    This text enumerates and describes the several dilemmas and challenges of Education in the 21st century, from the perspective of the last works and educational thoughts of Paulo Freire. The main concern is to (re)read this author taking into consideration the contemporary world educational scenario, confronting the utopistics of Immanuel Wallerstein well known for his long duration studies and for the concept of modern world-system with Paulo Freire utopia. Paulo Freires i...

  5. Análise do comportamento da demanda com abordagem de cenários simulados no setor automobilístico

    Directory of Open Access Journals (Sweden)

    Sergio de Araujo

    2013-01-01

    Full Text Available The field of mechanical engineering production is very important for many industries. Companies seek to improve their processes, methods, philosophies, mechanisms and technologies to achieve a competitive edge, win over consumer preference, and gain a greater share of a strained market. The aim of this paper is to carry out a behavioral analysis of demand for a company in the automotive sector by simulating a scenario that entails implementing an expansion of visibility of the steps of the manufacturing process, transit and storage. The methodology involves an extensive review of several cases, where the simulation tool is used to provide visibility of the different stages of production. It is expected to show that linear demand can equalize the level of stock when allied to the application of a marketing policy model of product and service demand along with the expansion of its dealer network’s visibility, allowing the placement of orders at any stage of the chain of production.

  6. Maintenance operation by divers on a swimming-pool type reactor (Osiris, CEN Saclay). Technical and medical prevention: an example of multidisciplinary ergonomic step

    International Nuclear Information System (INIS)

    Maintenance works in a swimming-pool reactor was performed by a team of divers. A multidisciplinary ergonomic study had previously defined the working procedure. The ergonomic approach is analysed. The divers' working techniques are described. After work, medical tests showed that previsions were verified and proved the methods as safe. This technique by divers' interventions should open new possibilities in nuclear industry

  7. O Clube dos 13 e o novo cenário do futebol brasileiro: uma análise a partir dos campeonatos baiano, Goiano, Paranaense e Pernambucano

    Directory of Open Access Journals (Sweden)

    Antonio de Souza Silva Júnior

    2014-03-01

    Full Text Available Clubes de futebol são geridos como empresas e devem obter recursos que gerem vantagem competitiva, sendo seu plantel de jogadores um recurso essencial. Uma das principais fontes de receitas para contratações de jogadores são cotas de televisionamento, recurso acessível aos times associados ao Clube dos 13. O artigo investiga a relação entre número de títulos estaduais e participação dos times nesta associação. Foram coletados dados de quatro campeonatos, Baiano, Goiano, Paranaense e Pernambucano, e feitas correlações lineares entre a participação no Clube dos 13, o número de títulos conquistados e crescimento da torcida. Concluiu-se que verbas das cotas de televisão são recursos inigualáveis e que podem gerar vantagem competitiva aos times que as recebem.

  8. A eclosão dos periódicos do Brasil e cenários para o seu porvir

    OpenAIRE

    Abel Laerte Packer

    2014-01-01

    Os periódicos de qualidade do Brasil alcançaram, nos últimos anos, um notável avanço, com a crescente presença nos índices bibliográficos internacionais e na web, impulsionados principalmente pela comunicação de resultados de pesquisa de autores brasileiros das diferentes áreas do conhecimento e com uso diferenciado dos idiomas inglês e português. Pelo menos 80% dos seus artigos originais e de revisão indexados internacionalmente têm afiliação brasileira e representam cerca de 30% do total da...

  9. Mal-estar no início da docência: narrativas produzidas em diferentes cenários de pesquisa

    Directory of Open Access Journals (Sweden)

    Flavinês Rebolo

    2013-01-01

    Full Text Available From re-reading the data from three studies by different researchers, we sought to identify, in the autobiographical narratives of "novices" teachers, aspects of satisfaction and dissatisfaction at the beginning in the work. The comparison among these studies showed some points of convergence relative to two aspects: 1 The role of narratives as research and as docent education instruments and 2 The source of dissatisfaction and frustration of the "novice" teachers such as insecurity to perform the docent work, students’ lack of discipline, lack of support from school and parents, lack of prestige in the profession and teacher’s overwork, among others.

  10. Congenital malformations induced by ionizing radiation in mouse embryos: investigating molecular changes. Doctoral Thesis Prepared at SCK-CEN and Defended in 2006

    International Nuclear Information System (INIS)

    Irradiation of the mammalian embryo during development results in diverse effects depending on the dose and the specific gestational phase at irradiation. In this work cellular and molecular changes associated with X-irradiation of embryos were therefore investigated at both early and late gestational stages at the moment of radiation exposure. Our goal was to find biological markers indicative of teratogenic effects of radiation, and provide a holistic model of the impact of irradiation during early and late development. In the first part of this doctoral thesis, we investigated telomere length in the irradiated and non-irradiated embryos bearing different p53 genotypes and malformation status as telomere shortening was associated with neural tube defects in mTR-/- embryos. Moreover, the loss of telomere function has been shown to elicit DNA damage checkpoints and p53-dependent apoptosis in vitro. We conclude that telomere shortening is associated with the malformation status as well with the p53 genotype. These data assign telomere length as a potential predictor of a malformed phenotype, a feature that is modulated according to the p53 genotype and the developmental stage at the moment of irradiation. In the second part of this work, we focused on a specific malformation phenotype, namely: forelimb defect. To identify potential genes involved in the radiation-induced forelimb teratogenesis, we investigated differential gene expression between irradiated and non-irradiated fetuses using RT-q-PCR. The results indicate that forelimb defects observed in p53 wild type fetuses irradiated at the organogenesis period was due to excessive cellular death as shown by the high expression of the pro-apoptotic factors caspase-3 and Bax. This suggestion was supported by the positive TUNEL assay performed on forelimb tissue sections of malformed irradiated fetuses. Moreover, overexpression in malformed fetuses of MKK3 and MKK7, both members of the stress-activated MAP kinase family, could be involved in radiation-induced apoptosis through activation of the p38 and JNK pathways, respectively. To further evaluate the biomarker value of telomere length in this forelimb defect phenotype, we assessed telomere length in normal fetuses versus abnormal ones with forelimb defects. We found that irradiated fetuses exhibiting forelimb defects showed a marked telomere shortening confirming our first findings, which showed an association between various malformations and telomere shortening. Knowing that oxidative stress and inflammation are potential accelerators of telomere attrition, and taking into account that amniotic fluid is the most accessible fetal material, we decided to explore cytokine secretion in the amniotic fluid of normal and malformed fetuses. Our results showed a considerable inflammatory reaction among the irradiated fetuses, as revealed by the high presence of pro-inflammatory cytokines. Finally, all these results indicate that insufficiency or excess of apoptosis is probably the central process behind radiation-induced malformations. Moreover, apoptosis is strongly related to p53, which upon signaling modulates cell death response according to the developmental stage at which exposure to radiation has occurred. Furthermore, in the context of this work, telomere shortening as well as the differential gene expression described and the high pro-inflammatory cytokines measured may constitute potential indicators of the teratogenic status of the embryos after radiation exposure

  11. Optimization of patient doses, linked to image quality, in vascular radiology. Doctoral thesis prepared at SCK-CEN and defended in 2005

    International Nuclear Information System (INIS)

    Vascular radiology includes procedures in which the radiologist or other medical specialist uses the radiological image to diagnose or treat a specific vascular structure. In the published MIRA-2004 report (Milieu- en natuurrapport Vlaanderen) is mentioned that in 2001 the diagnostic vascular procedures comprised only 0.9% and the interventional (cardiology) procedures only 0.4% from the total number of performed radiological medical examinations in Flanders. Notwithstanding the frequency is low, their contribution to radiation exposure in medicine is considerably higher in respect to all X-ray examinations. Due to the complexity of these procedures, the application of the ALARA-principle, keeping doses as low as reasonably achievable without jeopardizing image quality, is a great challenge. It is obvious that optimization of patient doses necessitates a reliable insight in dose levels associated with the different examinations. However, in Belgium there is a great lack of quantitative data in vascular radiology and no explicit instructions are available on how the work could be done practically. Therefore, the first purpose of the study was to define, to measure and to calculate doses to patients in 7 different hospitals. In the thesis, patient doses are measured and calculated for 3 specific vascular procedures: angiography of the lower limbs, angiography of the carotid arteries and cerebral embolisation. The doses are evaluated against different technical parameters of the equipment and of the working procedure. In view of optimization purposes, a protocol for performing dose audits in vascular radiology is suggested. From the results and conclusions in this study, some practical guidelines could be given for the radiological protection of the patient. For 158 patients, relevant parameters as tube voltage (kVp), tube load (mAs), field size, number of frames, fluoroscopy times etc. were recorded. With a flat ionization chamber, positioned in the radiation beam, the product dosexfield area (DAP) was measured for every beam projection separately. Skin doses were measured with thermoluminiscent dosimeters (TLDs) attached to the skin of the patient. These measurements confirmed that radiation doses are high and that for every procedure a large dose variability exists between the different hospitals and between the patients within one hospital. The quantification and analysis of patient doses for procedures of this kind was not easy, as the procedures are complex and not performed frequently. The study also learned us that 'effective dose' is a useful quantity to estimate in view of dose optimization. The effective dose is the weighted sum of organ doses and therefore can not be measured directly. By means of the Monte Carlo computer code, new and appropriate conversion coefficients were determined for the calculation of effective dose for vascular radiology procedures. If every beam projection in the procedure is considered separately, the calculation of effective dose is very complex and only suitable for studies with a small amount of patients involved. For that reason, also a practical method to calculate the effective dose was worked out, for which only one conversion coefficient is used in combination with the total DAP-value of the procedure. Different national and international organizations have recommended the use of patient dose audits in diagnostic radiology as a means of inter institutional comparison and the establishment of reference dose levels. Several studies 2,3,4 indicated that the performance of dose audits could reduce the difference between the highest and lowest measured dose with a factor of 2. Because of the high doses associated with vascular radiology, dose surveys could here also be of obvious benefit, but will not be straightforward due to the complexity of the procedures. The thorough analysis of the patient doses against all possible technical parameters of the equipment and the work procedure, made it possible to set up a protocol for the performance of dose audits in vascular radiology. We propose to register, in addition to the total DAP-values, also parameters as total number of frames, average kVp en possible copper filtration. These data can be used to set diagnostic reference levels (DRLs) or to compare them with existing DRLs per procedure. The information about the energy spectrum of the radiation (kVp and filtration) also makes it possible to estimate the effective dose. Finally, the extensive dose analysis leads to the proposition of some practical guidelines, in order to restrict patient dose, while maintaining an appropriate image quality. Although the current digital systems for vascular radiology need a lower radiation intensity compared to the conventional film-screen systems, it was found that in practice much more images were taken with the digital systems. If the number of frames is sufficiently reduced and if an appropriate dose level is set at the entrance of the image intensifier, depending on the type and the purpose of the procedure, the dose could already be substantially reduced. Although such guidelines can be raised by medical physicists, it will remain the choice of the radiologist if and how they will be implemented in practice. Keeping the medical staff informed and alert about radiation protection is therefore an important issue in the process of optimization

  12. Řešení průtahů s proplácením znalečného

    Czech Academy of Sciences Publication Activity Database

    Kratěna, Jindřich

    Praha - Moskva : Akademstrojnauka, 2012 - (Zacharov, S.; Kratěna, J.), s. 83-86 ISBN 978-5-9903774-1-7. [Stavebnictví a nemovitosti. Praha (CZ), 24.11.2011-25.11.2011] Institutional support: RVO:68378297 Keywords : remuneration * expert witness * solution of delays Subject RIV: JN - Civil Engineering

  13. Conhecimento, atitude e prática do uso de preservativos por presidiárias: prevenção das DST/HIV no cenário prisional

    OpenAIRE

    Ana Izabel Oliveira Nicolau; Samila Gomes Ribeiro; Paula Renata Amorim Lessa; Alana Santos Monte; Elizian Braga Rodrigues Bernardo; Ana Karina Bezerra Pinheiro

    2012-01-01

    Objetivou-se avaliar o conhecimento, a atitude e a prática de presidiárias quanto ao uso do preservativo masculino e feminino como medida preventiva às DST/HIV. Pesquisa quantitativa e avaliativa do tipo Conhecimento, Atitude e Prática (CAP), envolvendo 155 presidiárias. A coleta de dados realizou-se de janeiro a março de 2010 na penitenciária feminina do estado do Ceará. Embora tivessem ouvido falar e/ou soubessem as finalidades do uso, apenas 35 mulheres (22,6%) tinham conhecimento adequado...

  14. Stanovení limitů cen při vývoji nového výrobku v automobilovém průmyslu

    OpenAIRE

    Slavíková, Petra

    2012-01-01

    The bachelor thesis is focused on determining the levels of prices for new product development in the automotive industry. The work is divided into two parts, theoretical and practical. The theoretical part contains a particular definition of the price process of determining the price of a new product. The practical part focuses on specific examples of setting a limit price of parts and determining the target costs of the car.

  15. Potentiation of Radiosensitivety for Nasopharyngeal Carcinoma Cells by Berberine%小檗碱对鼻咽癌细胞株 CEN-2凋亡和放射敏感性的影响

    Institute of Scientific and Technical Information of China (English)

    罗彪; 候双雁; 梁谨

    2015-01-01

    [Objective] To explore whether berberine can improve the radiosensitivity of nasopharyngeal carcinoma cells .[Methods]Nasopharyngeal carcinoma CNE‐2 cell lines were cultured in vitro and divided ran‐domly into berberine intervention ,berberine plus irradiation ,irradiation and non‐intervention groups .Berber‐ine and berberine plus irradiation groups were both divided into two subgroups according to different berberine concentrations .Cell cycle distribution and apoptosis were detected by flow cytometry .And the protein expres‐sions of survivin and caspase‐3 were examined by immunocytochemical method (SABC) .[Results] The apop‐totic ratio was 20 .37% in non‐intervention group ,25 .81% in irradiation group ,27 .19% in berberine (20 μg/mL) group ,44 .02% in berberine (20 μg/mL) plus irradiation group and 49 .86% in berberine (40 μg/mL) plus irradiation group .Berberine showed dose‐dependent cytotoxicity .In 20μg berberine + irradiation and 40μ g berberine + irradiation groups ,G1 cell ratio was less than irradiation group .There were significant differ‐ences ( P <0 .05) .In berberine + irradiation group ,the percentage of cells increased in G2 and S phases and the increase of drug concentration was more obvious after the change .Significant differences existed between irradiation and medication groups ( P <0 .05) .[Conclusion] Berberine plus irradiation can accelerate the de‐generation of CNE‐2 cells and indicate its potential role of radiosensitization .%【目的】探讨小檗碱对鼻咽癌细胞凋亡和放疗敏感性的影响。【方法】收集鼻咽癌细胞株CEN‐2培养,根据处理方法不同分为6组。A组:空白对照,不做处理;B组:仅单纯2 Gy剂量射线照射,培养24 h;C组:20μg/mL (C1)、40μg/mL (C2)小檗碱药物干预,作用48 h;D组:药物+射线照射干预,根据药物浓度不同分为20μg/mL小檗碱组(D1),40μg/mL小檗碱组(D2),用法同前。采用流式细胞仪检测各组细胞周期分布及细胞凋亡指数并比较。【结果】D1组、D2组G1期细胞比例少于B组,其差异有显著性( P<0.05);D组G2、S期细胞比例增加,药物浓度增加后上述变化更明显,与B组、C组比较差异均有显著性( P <0.05);浓度高小檗碱作用细胞凋亡指数高(P<0.05),且D组凋亡指数显著高于C组(P<0.05),但B组与C1组比较无显著性差异(P>0.05)。【结论】小檗碱联合射线照射干预,可促进鼻咽癌细胞CNE‐2的凋亡,增强放射敏感性。

  16. A importância da industrialização do xisto brasileiro frente ao cenário energético mundial The importance of the industrialization of Brazilian shale when faced with the world energy scenario

    OpenAIRE

    Marilin Mariano dos Santos; Patricia Helena Lara dos Santos Matai

    2010-01-01

    Esse artigo discute a importância da industrialização do xisto brasileiro, tendo, como base, fatores como: seguridade do sistema de energia nacional, a geopolítica mundial do petróleo, quantidade dos recursos, custo de produção, preço do petróleo, impactos ambientais e as reservas de petróleo nacionais. O trabalho mostra que a industrialização do xisto sempre surge quando questões como as do peak oil ou da geopolítica do petróleo aparecem como fatores que colocam o preço do barril de petróleo...

  17. Ocena vrednosti kmetijske proizvodnje v Republiki Sloveniji : (na podlagi popisa kmetijskih gospodarstev leta 2000 in povprečnih odkupnih cen leta 2003 = Estimation of the agricultural production value in the Republic of Slovenia

    Directory of Open Access Journals (Sweden)

    Igor Vrišer

    2005-01-01

    Full Text Available The report is an attempt to estimate the agricultural production value in Slovenia on the basisof estimation districts and geographical regions. The report is based on data of harvest andproduction, collected by Statistical Offi ce of Slovenia within the »Census of agriculturalfarming in the year 2000”, and on the average purchase price for some agricultural products,which were registered in the department of agricultural statistics at the Statistical Offi ce inthe year 2003. The results should indicate territorial difference in the agricultural productionvalue.

  18. A (In Efetividade Do Direito À Educação No Cenário Jurídico Brasileiro: Uma Análise Sob O Prisma Do Estatuto Da Criança E Do Adolescente

    Directory of Open Access Journals (Sweden)

    Dirceu Pereira Siqueira

    2014-01-01

    Full Text Available Data from the Data from the Organization for Economic Cooperation and Development - OECD - show that Brazil invests in education as a percentage of GDP lower than developed countries and even other countries in South America The Statute of the Child and Adolescent brought in Chapter IV - The Right to Education, Culture, Sport and Recreation to - ensuring the right to education, as well as the duties of the state, the parents or guardians and leaders of institutions of basic education. Thus, this article aims to discuss the right to education and the duty of the state in this endeavor, all from the perspective of constitutional

  19. O emprego do enunciado "padrão FIFA" na mídia após os escândalos no cenário do futebol

    Directory of Open Access Journals (Sweden)

    Luiz Afonso Fernandes de Meirelles

    2015-07-01

    Full Text Available Este artigo tem por objetivo discutir as construções de sentido atribuídos pela mídia para o enunciado "padrão FIFA" após os escândalos de corrupção envolvendo a maior entidade administrativa do Futebol. De acordo com os estudos de Bakhtin e o Círculo, o enunciado concreto estabelece conexões com o contexto extraverbal da vida e todo signo ideológico representa a realidade a partir de um lugar valorativo. A metodologia deste trabalho consiste na análise de como tal expressão foi apresentada no jornal Meia Hora de Notícias publicado dia vinte e oito de maio de 2015; na edição 2428 da revista Veja de três de junho de 2015 e edição 2374 da revista IstoÉ de mesma data. A fundamentação teórica se complementa à luz da perspectiva Bakhtiniana dos conceitos de enunciado, enunciado concreto e signo ideológico; Citelli (2005, responsável por apresentar algumas estratégias para a realização do efeito persuasivo e Farina (2007, com a abordagem sobre a psicodinâmica das cores. Após a análise, verificou-se que tal expressão recebeu um novo sentido a partir dos contextos em que foi inserida.

  20. Cenário internacional da pesquisa em células-tronco embrionárias Escenario internacional de la pesquisa en células madre embrionarias International perspective on embryonic stem cell research

    OpenAIRE

    Debora Diniz; Daniel Avelino

    2009-01-01

    OBJETIVO:Analisar comparativamente regulações governamentais entre países sobre pesquisa em células-tronco embrionárias. MÉTODOS:O estudo foi conduzido entre março e maio de 2008, por meio de busca eletrônica direta nas fontes oficiais sobre documentos legislativos de 25 países selecionados e confirmada, quando necessário, por consulta por e-mail a pesquisadores e autoridades desses países. RESULTADOS: Os resultados mostraram tendência a permitir a prática de pesquisas com células-tronco embr...

  1. Cenário internacional da pesquisa em células-tronco embrionárias Escenario internacional de la pesquisa en células madre embrionarias International perspective on embryonic stem cell research

    Directory of Open Access Journals (Sweden)

    Debora Diniz

    2009-06-01

    Full Text Available OBJETIVO:Analisar comparativamente regulações governamentais entre países sobre pesquisa em células-tronco embrionárias. MÉTODOS:O estudo foi conduzido entre março e maio de 2008, por meio de busca eletrônica direta nas fontes oficiais sobre documentos legislativos de 25 países selecionados e confirmada, quando necessário, por consulta por e-mail a pesquisadores e autoridades desses países. RESULTADOS: Os resultados mostraram tendência a permitir a prática de pesquisas com células-tronco embrionárias, embora com rígidas restrições éticas. Dentre os países estudados, apenas Itália e Alemanha explicitamente condenam a extração de células-tronco e apenas Itália proíbe seu uso subseqüente. Decisões jurídicas brasileiras recentes são coerentes com o contexto regulatório internacional sobre pesquisa embrionária. CONCLUSÕES: A tendência observada representa a liberdade de pesquisa para a promoção do conhecimento como um bem público, reforçada pela expectativa de potencialidade terapêutica na pesquisa com células-tronco embrionárias para o tratamento e cura de doenças sem qualquer possibilidade de assistência médica.OBJETIVO:Analizar comparativamente regulaciones gubernamentales entre países sobre pesquisa en células madre embrionarias. MÉTODOS:El estudio fue conducido entre marzo y mayo de 2008, por medio de búsqueda electrónica directa en las fuentes oficiales sobre documentos legislativos de 25 países seleccionados y confirmada, cuando era necesario, por consulta por e-mail a investigadores y autoridades de esos países. RESULTADOS:Los resultados mostraron tendencia a permitir la práctica de pesquisas con células madre embrionarias, a pesar de que con rígidas restricciones éticas. Entre los países estudiados, apenas Italia y Alemania explícitamente condenan la extracción de células madre coherentes con el contexto regulatorio internacional sobre pesquisa embrionaria. CONCLUSIONES: La tendencia observada representa la libertad de pesquisa para la promoción del conocimiento como un bien público, reforzada por la expectativa de potencialidad terapéutica en la pesquisa con células madre embrionarias para el tratamiento y cura de enfermedades sin cualquier posibilidad de asistencia médica.OBJECTIVE:To comparatively analyze governmental regulations on embryonic stem cell research among countries. METHODS: The study was performed between March and May 2008, using a direct electronic search through official databases of legislative documents from 25 selected countries, confirmed by email consultation with researchers and authorities from these countries, when necessary. RESULTS: Results showed a trend to allow the practice of embryonic stem cell research, though with strict ethical restrictions. Among the countries analyzed, only Italy and Germany explicitly condemned the extraction of stem cells and only Italy prohibits their subsequent use. Recent judicial decisions in Brazil are in accordance with the international regulatory context of embryo research. CONCLUSIONS: The trend observed represents freedom of research to promote knowledge as a public good, emphasized by the expectation of therapeutic potentiality of embryonic stem cell research to treat and cure diseases without any medical care.

  2. Turismo e Hospitalidade no cenário da comunicação científica: avaliação de periódicos científicos eletrônicos

    Directory of Open Access Journals (Sweden)

    Elaine Cristina Pinto de Miranda

    2013-12-01

    Full Text Available Com o avanço da tecnologia da informação, os periódicos científicos estão sendo publicados cada vez mais em versão eletrônica na internet, o que agiliza a circulação, acesso e uso dos seus conteúdos. Este artigo avalia a qualidade de 19 periódicos eletrônicos em Turismo e Hospitalidade publicados no Brasil, que se encontravam ativos em 2011. Verificou-se que a maioria dos periódicos tinha periodicidade semestral e era publicado por universidades da região Sudeste do País. Notou-se o crescimento de novos títulos, especialmente a partir de meados da década de 2000, associado ao uso do software SEER e à inserção no movimento do acesso aberto, o que trouxe benefícios para a área. A avaliação de um conjunto de 74 indicadores de padrões de normalização nacionais e internacionais indicou o desempenho desses veículos, variando entre 40 e 72 pontos, com destaque para quatro deles: Caderno Virtual de Turismo, Revista Brasileira de Pesquisa em Turismo, Turismo em Análise, Turismo - Visão e Ação. Constatou-se que nenhum periódico alcançou a pontuação máxima de 90 pontos, e foram apontados os principais indicadores não atendidos. Há necessidade de novos estudos e ações junto a editores e autores, além de apoio de instituições de fomento. Tourism and Hospitality in the Scenario of Scientific Communication: Analysis of Electronic Scientific Journals - With the advancement of information technology, scientific journals are being increasingly published in the electronic version on the Internet, which speeds up the circulation, access and use of its contents. This article evaluates the quality of 19 Tourism and Hospitality journals published in Brazil and that were active in 2011. It was found that most journals had biannually publication and was published by universities in the Southeast of the country. It was noted the growth of new titles, especially from the mid-2000s, associated with the use of the software SEER and the integration into the open access movement, which brought benefits to the area. The evaluation of a set of 74 indicators of patterns of national and international standardization indicated the performance of these vehicles, ranging between 40 and 72 points, especially 4 of them: Caderno Virtual de Turismo, Revista Brasileira de Pesquisa em Turismo, Turismo em Análise, Turismo - Visão e Ação. Was found that no journal has achieved the maximum score of 90 points, and was pointed the main indicators that not met. There is need for further studies and actions with publishers and authors, as well as support from funding agencies.  

  3. Cenários portuenses de insegurança. Contributos do interaccionismo simbólico para uma análise da construção mediática do desvio

    OpenAIRE

    Paula Guerra

    2002-01-01

    Neste artigo daremos relevância ao estudo dos problemas sociais na perspectiva de que quot;o estudo da emergência de um problema social é um dos melhores reveladores desse trabalho de «construção da realidade», para retomar o título de uma célebre obra da sociologia, porque condensa todos os aspectos desse processo. Concretamente, iremos dar particular ênfase à importância da construção mediática dos problemas sociais, salientando que quot;ao dar uma visão necessariamente selectiva e ao privi...

  4. Cenários de Insegurança: contributos do interaccionismo simbólico para uma análise sociológica da construção mediática do desvio

    OpenAIRE

    Paula Guerra

    2002-01-01

    Este Relatório dá particular importância ao interaccionismo simbólico enquanto teoria explicativa de recorte inovador e precursora na explicitação dos mecanismos de dominação social. Concretamente, iremos dar particular ênfase à quot;importância da construção mediática dos problemas sociais, salientando que quot;ao dar uma visão necessariamente selectiva e ao privilegiar certas interpretações do acontecimento, a imprensa contribui para fabricar o sentido político-social desses movimentos com ...

  5. Elektronická podpora pronájmu malých rekreačních objektů (zkráceně „PMRO“)

    OpenAIRE

    Řezáč, Michal

    2012-01-01

    Tato práce se zaobírá analýzou dostupné komerční aplikace pro podporu evidenčních agend, jejich atributy a navrhnutím datového a procesního modele pro maximálně jednoduchou, ale postačující aplikaci. V navrhovaném řešení se upřednostňuje jednoduchost a maximální dostupnost řešení pro běžného občana, živnostníka, případně pro firmu, která potřebuje efektivně využívat bytový fond a není to její hlavní činností. Z tohoto důvodu je aplikace vytvořena pro běžné programové vybavení PC a to pro MS O...

  6. Direitos Humanos e gênero no cenário da migração e do tráfico internacional de pessoas Human Rights and gender in the scenario of migration and international trafficking in persons

    Directory of Open Access Journals (Sweden)

    2008-12-01

    Full Text Available Este texto apresenta algumas observações sobre as violações de direitos humanos que têm lugar na migração internacional e no tráfico de pessoas a partir dos relatos de mulheres migrantes abordadas pela equipe do Posto de Atendimento Humanizado aos/às Migrantes, no aeroporto internacional de Guarulhos. A apresentação desses casos mostra a violação de direitos nesse contexto e a importância de se discutir o enfrentamento ao Tráfico de Pessoas a partir de uma perspectiva de gênero e Direitos Humanos.This paper presents some comments about violations of human rights taking place in international migration and human trafficking from the reports of migrant women gathered by the team of the Posto de Atendimento Humanizado aos/às Migrantes, in the International Airport of Guarulhos. The presentation of these cases shows the violation of rights in that context and the importance of discussing the confrontation with Trafficking in Persons from a perspective of gender and Human Rights.

  7. Scenarios for the milk production chain in Brazil in 2020 Escenarios para la cadena de producción de leche en Brasil en 2020 Cenários para a cadeia produtiva de leite no Brasil em 2020

    OpenAIRE

    Renata Giovinazzo Spers; James Terence Coulter Wright; André de Azevedo Amedomar

    2013-01-01

    Brazilian milk production has grown steadily and in 2004 the country became self-sufficient in dairy production. This article develops possible scenarios for the milk production chain in Brazil for the year 2020 in order to contribute to decisions that must be made by stakeholders. A literature review on foresight and the use of scenarios was conducted, and a scenario writing approach based on Wright and Spers (2006) was adopted, which includes the use of the Delphi method, Michael Porter's F...

  8. "O homem é mesmo a sua testosterona": promoção da andropausa e representações sobre sexualidade e envelhecimento no cenário brasileiro

    Directory of Open Access Journals (Sweden)

    Fabíola Rohden

    2011-06-01

    Full Text Available O artigo trata da construção recente de novos diagnósticos médicos e de um correspondente mercado consumidor em potencial considerando o caso do distúrbio androgênico do envelhecimento masculino ou andropausa, "doença" que afetaria os homens a partir dos 35-40 anos de idade. A perspectiva utilizada centra-se nos estudos sociais da ciência e gênero e particularmente na necessidade de investigar as redes criadas no processo de construção dessa nova categoria. Por meio da análise da produção científica e da trajetória da construção da andropausa como fenômeno de interesse público, elabora-se um processo inédito de medicalização do homem e da sexualidade masculina, via o reforço na centralidade dos hormônios como modelo preponderante de entendimento corporal. Além disso, destaca-se a promoção de uma intrincada conexão simbólica que associa juventude, saúde, beleza e atividade sexual nos processos de patologização das fases ou de condições de vida e na recusa do envelhecimento.The article deals with the recent construction of new medical diagnoses and a corresponding potential consumer market by considering the case of Androgen Disorders of the Male Aging, or Andropause, "disease" that supposedly affected men from 35-40 years old. The approach used focuses on the social studies of science and gender and in particular the need to investigate the networks created in the process of the construction of this new category. Through the analysis of scientifi c production and the trajectory of construction of Andropause as a phenomenon of public interest, an unprecedented process of medicalization of men and male sexuality is enacted, by strengthening the centrality of hormones as predominant model for understanding the body. Moreover, there is the promotion of an intricate symbolic connection that links youth, health, beauty and sexual activity in the pathologization of the phases or conditions of life and the refusal of aging.

  9. Compression system for ion-bursts in the van der Graaff at the Cadarache Centre; Systeme de compression de bouffees d'ions pour le van de graaff du Cen/Cadarache

    Energy Technology Data Exchange (ETDEWEB)

    Rizzitelli, L.; Carossi, J.C.; Calvet, A.; Arnaud, A.; Pomelas, E. [Commissariat a l' Energie Atomique, Cadarache (France). Centre d' Etudes Nucleaires

    1967-07-01

    This equipment has been designed for the 5 MeV Van der Graaff and makes it possible to carry out time-of-flight spectrometry experiments. A pulsed source produces ion-bursts of controllable width between 10 and 50 msec, at a pulse repetition frequency of 3.5 MHz; in each burst the ions are made to follow variable paths so that the particles arrive simultaneously at a pre-selected point. This is achieved by means of a magnet which curves the paths, and at the entrance to which each burst is deflected by two plates which are fed in phase opposition at a frequency of 7 MHz. (authors) [French] Cet appareil realise pour le Van de Graaff de 5 MeV permet de realiser des experiences de spectrometrie par la methode de temps de vol. Une 'source puisee' permet d'obtenir des bouffees d'ions de largeur reglable entre 10 et 50 ms, a la frequence de repetition de 3,5 MHz et, dans chaque bouffee, on fait parcourir des trajets variables aux ions, de telle sorte que ces particules arrivent simultanement en un meme endroit choisi a l'avance. Ceci est realise par un aimant qui incurve la trajectoire des ions et a l'entree duquel on deflechit chaque bouffee par deux plaques alimentees en opposition de phase a une frequence de 7 MHz. (auteurs)

  10. Qualidade de vida no trabalho num cenário de precarização: a panaceia delirante Quality of work life in a setting of precariousness: a delusional panacea

    Directory of Open Access Journals (Sweden)

    Valquíria Padilha

    2009-11-01

    Full Text Available Este texto analisa os fatores de precarização do trabalho em relação com a qualidade de vida do trabalhador. Desenvolve uma linha de raciocínio crítico que começa entendendo os contornos do trabalho precário na ordem do capital, passa pela compreensão do que é Qualidade de Vida no Trabalho (QVT para chegar à análise dos desafios encontrados hoje pelos trabalhadores em relação às possibilidades de viver tanto o trabalho quanto a vida cheios de sentido, em direção a um projeto de emancipação humana. A ideia principal defendida é a de que políticas de QVT adotadas em empresas podem aliviar momentaneamente alguns sintomas, mas não ferem as causas estruturais dos problemas. A humanização da gestão da força de trabalho pode ser uma encenação necessária no interior das organizações, mas não deve ser vista como solução para os males do trabalho.This paper analyzes the factors of the precariousness of work in relation to the quality of life of the worker. It develops a critical line of reasoning that begins by understanding the contours of precarious work in capital order, and then the understanding of what Quality of Work Life (QWL is and finally, an analysis of the challenges faced by workers today in relation to the possibilities of finding meaning in both life and work, which leads towards a project of human emancipation. The main idea put forward is that the QWL policies adopted by companies can temporarily relieve some symptoms, but do not reach the structural causes of the problems. The humanization of the management of the workforce may be a necessary scene within organizations, but should not be seen as a solution for work troubles.

  11. Overview of the teak silviculture in Brazil and perspectives for genetic improvement O cenário nacional da silvicultura de teca (Tectona grandis L. f. e perspectivas de melhoramento

    Directory of Open Access Journals (Sweden)

    Guilherme Schnell e Schuhli

    2010-12-01

    Full Text Available

    The teak (Tectona grandis L. f. wood properties direct an intense process of domestication and plantation outside its original habitat. The interest in the species as an alternative for the traditional forest plantations in Brazil is growing. This review contributes with the recovery of technical and scientific information regarding teak aiming the subsequent proposition of a genetic breeding program. In this paper it is presented a brief review of the silvicultural methods for the species in Brazil. The positive perspectives and the main risks related to the teak plantation were explored. In  general, in the most recent genetic improvement  programs the employment of clones was a common strategy. The initial emphasis of the improvement programs were the growth rate and wood property (generally density. As for other species the proper choice of the selection methods resides in observing the genetic variances (additive and non-additive, herdability (broad and narrow, and the genetic correlations among characters. As in other forest  breeding programs the conversion of progeny tests in seedling seed orchards is common for a faster seed production and development of commercial clones
    or clonal seed orchards.

    doi: 10.4336/2010.pfb.30.63.217

    As propriedades da madeira de teca (Tectona grandis L. f regem um intenso processo de domesticação e cultivo em regiões além de seu habitat natural. O interesse na espécie como alternativa aos plantios florestais tradicionais no Brasil vem crescendo. Esta revisão contribui com o processo de resgate da  informação técnicocientífica sobre a teca com vistas à elaboração de um programa de melhoramento. Neste documento, é apresentada uma breve revisão sobre os métodos silviculturais para a espécie no Brasil. Foram explorados aspectos positivos inerentes ao cultivo assim como os principais riscos. De forma geral, verificou-se que os programas recentes de  melhoramento genético concentraram-se no  desenvolvimento de clones. A ênfase inicial dos programas de melhoramento tem sido a taxa de crescimento e propriedades da madeira (geralmente densidade. Para a aplicação e escolha dos métodos de seleção em teca são importantes as variâncias genéticas aditivas e não aditivas, as herdabilidades no sentido restrito e amplo, e as correlações genéticas entre caracteres. Como em outros programas de melhoramento florestal, é comum a conversão de testes de progênies em pomares de sementes para a produção mais rápida de clones comerciais ou de pomares clonais de sementes.

    doi: 10.4336/2010.pfb.30.63.217

  12. Cenários da diversidade: variedades de capitalismo e política industrial nos EUA, Alemanha, Espanha, Coreia, Argentina, México e Brasil (1998-2008

    Directory of Open Access Journals (Sweden)

    Ignacio Godinho Delgado

    2010-01-01

    Full Text Available Dans cet article, on examine comment apparaissent aux EUA, en Allemagne, Espagne, Corée, Argentine, au Mexique et Brésil les différents domaines institutionnels analysés par la littérature concernant les variétés de capitalisme (gouvernance entrepreneuriale, rapport entre les entreprises, relations industrielles, relations entreprises-employés, processus de qualification, en y incorporant des aspects comme les rapports Etat patronat ainsi que les modèles d'insertion des économies nationales dans le marché mondial, de façon à reconnaitre les différents cadres institutionnels dans lesquels opèrent les entreprises de ces pays. Ensuite, on présente les principales caractéristiques des politiques industrielles menées par les pays mentionnés, compte-tenu de leur bien-fondé vis-à-vis de ces éléments et du contexte brésilien, de façon à définir les politiques et les changements institutionnels ayant le plus de chance de succès au Brésil quant à l'augmentation de la capacité d'innovation technologique de ses entreprises.

  13. Financiamento, gasto público e gestão dos recursos em saúde: o cenário de um estado brasileiro Funding, public spending and management of health resources: the current situation in a Brazilian State

    Directory of Open Access Journals (Sweden)

    Valéria Rodrigues Leite

    2012-07-01

    Full Text Available O artigo aborda a temática do financiamento e o processo de descentralização tendo como objetivo examinar a composição, a direção e a gestão dos recursos na área da saúde. A amostra investigada foi constituída por 14 municípios do Estado do Rio Grande do Norte. A pesquisa envolveu coleta de dados referente às transferências, recursos próprios municipais e gastos com atenção básica. Na análise da gestão foi realizado um levantamento junto aos dirigentes locais e conselheiros. Observa-se que o financiamento do Sistema Único de Saúde se faz às expensas das transferências federais e receitas municipais, com pequena participação dos recursos estaduais. A direção dos gastos tem privilegiado a atenção básica. No processo de gestão, verifica-se centralização das ações nas prefeituras. As secretarias municipais e os conselhos cumprem em parte a legislação e apresentam dificuldades na autonomia e o controle social. Os resultados mostram que os instrumentos de planejamento e gestão são limitados em função das contradições presentes no contexto institucional, político e cultural no âmbito regional.This article investigates the issue of funding and the decentralization process in order to examine the composition, application and management of resources in the healthcare area. The sample surveyed involved 14 municipalities in the state of Rio Grande do Norte, Brazil. The research involved data gathering of financial transfers, the municipality's own resources and primary healthcare expenses. Management analysis included a survey of local managers and counselors. It was seen that the Unified Health System is funded mainly by federal transfers and municipal revenues and to a far lesser extent by state resources. Funds have been applied predominantly in primary healthcare. The management process saw centralization of actions in the city governments. Municipal secretarial offices and councils comply partially with legislation, though they have problems with autonomy and social control. The results show that planning and management instruments are limited, due to the contradictions inherent to the institutional, political and cultural context of the region.

  14. Cenário cinzento da violência e as múltiplas facetas da família: enfoque psicossocial = Grey scene of violence and the multiple facets of the family: psychosocial approach

    Directory of Open Access Journals (Sweden)

    Costa, Danyelle Monte Fernandes

    2011-01-01

    Full Text Available A violência é um problema de saúde pública que atinge diversas sociedades no contexto global. Tem caráter endêmico e pluridimensional, podendo ser representada de forma diferente entre as sociedades e seus grupos. Objetivou-se apreender as representações sociais da violência e da família elaboradas por crianças e adolescentes de João Pessoa, PB. A amostra compreendeu 180 crianças e adolescentes, submetidos ao questionário sociodemográfico e à técnica de associação livre de palavras. Os dados foram processados pelo software Tri-Deux-Mots. As representações sociais elaboradas pelos participantes apresentaram consensos e dissensos; as crianças ancoraram a violência em elementos psicossociais e aspectos concretos, enquanto os adolescentes associaram às consequências físicas e jurídicas do fenômeno. O universo compartilhado pelos participantes demonstrou as múltiplas faces da família, representada neste estudo de forma ambivalente. Isto é, a família foi objetivada como uma atmosfera de união e carinho, embora também configure um ambiente hostil perpassado por brigas

  15. Avaliação do programa de controle da tuberculose em cenário Amazônico: desafios em Coari Evaluation of a tuberculosis control program in an Amazonian scenario: challenges in Coari

    Directory of Open Access Journals (Sweden)

    Nicolás Esteban Castro Heufemann

    2013-03-01

    Full Text Available Pesquisa avaliativa, tipo estudo de caso, do contexto e grau de implantação do Programa de Controle da Tuberculose (PCT no município de Coari, Amazonas, 2001-2008. As técnicas de pesquisa conjugaram abordagens quantitativa e qualitativa, com uso de modelo lógico e matriz de julgamento. O componente quantitativo utilizou dados do Sistema de Informação de Agravos de Notificação e dados populacionais do Departamento de Informática do Sistema Único de Saúde. As variáveis foram, idade, sexo, forma clínica, procedência, tipo de entrada, meios diagnósticos e situação de encerramento. Para a população foram feitos cálculos de interpolação geométrica, por faixa etária, sexo e procedência (urbana e rural. O componente qualitativo combinou técnicas e fontes: pesquisa documental; observação e entrevista. O modelo lógico propiciou o entendimento da estrutura, processo e resultado do PCT; e a matriz de julgamento permitiu identificar o grau de implantação. A taxa média de incidência da tuberculose na área urbana foi 27 casos por 100.000 habitantes e de 9,4 por 100.000 habitantes na área rural, com razão masculino/feminino de 1,6. A avaliação do contexto externo, vigilância epidemiológica e operacionalização do PCT mostrou grau de implantação intermediário. No contexto organizacional, estrutura física das Unidades Saúde, recursos humanos e efetividade, o resultado foi incipiente. No geral, o grau de implantação foi intermediário. A flutuação nas notificações e taxas anuais de incidência, associada ao não cumprimento das metas do PCT, à desarticulação entre o PCT e o restante da atenção básica e à não interiorização da assistência indicam sérias dificuldades na operacionalização das ações de controle da tuberculose.This is an evaluative research, a type of study case of the context and degree of implementation of the Tuberculosis Control Program (PCT in the city of Coari, State of Amazonas, 2001-2008. Research techniques combined quantitative and qualitative approaches, using a logical model and a judgment matrix. The quantitative component used data from the Information System for Notifiable Diseases and Population Data from the Department of the Brazilian National Health System. The variables assessed were age, sex, clinical form, origin area, type of entry, diagnostic and outcome. For population there were calculated geometric interpolation, by age, gender and residence (urban or rural. The qualitative component combined techniques and sources: documentary research and observation and interview. The logical model led to the understanding of the structure, process and outcome of the PCT, and with the judgment matrix we identified the degree of implementation. The mean tuberculosis incidence was 27 cases per 100.000 inhabitants in urban area, and 9.4 per 100,000 in rural area, with a male / female ratio of 1.6. The external context assessment, surveillance and operation of the PCT showed intermediate degree of implementation. In the organizational context, the physical structure of the Health Units, human resources and effectiveness, the result was incipient. In general, the level of implementation was intermediate. Oscillations in notifications and annual rates of incidence indicate serious difficulties in the actions of the tuberculosis control. These difficulties are also associated with non-compliance with the goals of the PCT, disconnection between the PCT and the primary health care and absence of health care polices for the interior population.

  16. Příběh nevrácené knihy – vymáhání knih a dluhů v praxi Knihovny AV ČR

    Czech Academy of Sciences Publication Activity Database

    Krahulcová, Marina

    -, č. 1 (2015). E-ISSN 1805-2800 Keywords : academy of sciences of the czech republic * library https ://www.lib.cas.cz/casopis-informace/pribeh-nevracene-knihy-vymahani-knih-dluhu-praxi-knihovny-av-cr/

  17. Důsledky vývoje cen bydlení na potenciální i akutní ohrožení finanční nedostupností bydlení

    Czech Academy of Sciences Publication Activity Database

    Mikeszová, Martina; Lux, Martin; Sládek, Jan

    Praha : Professional Publishing, 2010 - (Kuda, F.; Lux, M.), s. 11-47 ISBN 978-80-7431-026-3 R&D Projects: GA MMR WD-05-07-3 Institutional research plan: CEZ:AV0Z70280505 Keywords : Housing Affordability * Social Exclusion * Rental Housing Subject RIV: AO - Sociology, Demography

  18. 不尽的思念--写在贺绿汀先生诞辰100周年%My Infinite Memory of Mr. He Luting on His Cen tenary Birthday

    Institute of Scientific and Technical Information of China (English)

    陈复君

    2003-01-01

    @@ 在我的书柜上摆放着两帧珍贵的照片.一张是贺绿汀先生的侧面单人照,另一张是贺先生和姜瑞芝先生的合影,两位老人坐在公园的长椅上,各持一根手杖,神情安详.每当我走过他们面前,都看到他们在对我亲切地微笑.

  19. A legal analysis of the use of ionising radiation in medical hospital practice: an inquiry into the influence of prevention and precaution on health protection and liability. Doctoral thesis prepared at SCK-CEN and defended in 2004

    International Nuclear Information System (INIS)

    The article refers to an abstract of a doctoral thesis. From a legal perspective there exists a clear need for a general framework describing conditions and consequences of risk management in the field of high technology. Despite the existence of many kinds of Safety Procedures and Soft Law, specific guidelines are lacking for regulators and courts, especially in case of scientific controversy and uncertainty about the health effects of an activity or a product such as low doses of ionising radiation, electro-magnetic fields, genetically modified organisms, PCB's in salmon etc. The research of the PISA Project on Legal Aspects and Liability has been focussed on the medical applications of ionising radiation. The safety approach depends on the risk characterisation and differs for stochastic and deterministic effects. The most important objective was to find liability or funding systems which can cope with these differences, in particular between dose limits (as for the nuclear industry), reference dose levels foreseen in the EC medical Directive (as for nuclear medicine), and Optimisation referring to the ALARA principle. Risk assessment and risk management that are based on traditional narrow risk-assessment models have to be revised in the light of the Precautionary Principle. This principle urges policy-makers to adopt a broader, more pluralistic approach, considering the societal equilibrium, i.e. the general interest of the activity at stake, the general impact of individual protective measures and the existence of reasonable alternatives from a sociological, economical, scientific and technological point of view. One of the characteristics of the Precautionary Principle relates to our opinion to the collective damage to human health, i.e. a detriment that relates to a group of people. Nevertheless, as a result of the application of the Precautionary Principle, we believe that in case of individual damage the standard of care shall be more and more defined, following the risk characterisation and assessment which has to be introduced once a scientific or societal problem occurs with regard to medical practices, already subject to the legal duty of Justification and of Informed Consent. For some specific cases, as paediatric CT doses, the 2003 report of the Belgian Health Council gives a clear warning and refers to collective doses that are significantly higher than in the neighbouring countries. It cannot be denied that such a repeated warning urges decision makers and hospitals to take corrective actions, in particular when poor optimisation is put in place. Causality in the nuclear field is another complex problem, where worldwide alternatives are under consideration, such as probability of causation. However, such a concept, based on statistical proof, can hardly be implemented in Belgian law since our tort- and insurance-system is based on the individual relationship between liable actor and victim

  20. O pensamento contrafactual e a atribuição de culpa a vítimas de violação em cenários de stranger e acquaintance rape

    OpenAIRE

    Silva, Daniela Maria Da Costa Ferreira Muro E

    2014-01-01

    Cada vez mais a violação é perspetivada como o trauma que efectivamente constitui (Vidal & Petrak, 2007; Krahé, 1991). Ao impacto do crime per se, acresce o feedback da sociedade, que, se negativo, desencadeia um processo de vitimização secundária (Strómwall, Landstrom & Alfredsson, 2014), nomeadamente, a atribuição de culpa pelo crime à vítima. Uma das teorias que tem sido empregue na compreensão dos julgamentos de culpabilidade imputados a vítimas de violação é a teoria do pensamento con...

  1. Nuclear energy and sustainable development. Theoretical reflection and critical-interpretative research towards a better support for decision making sustainable development, governance, technology assessment. Doctoral Thesis Prepared at SCK-CEN and Defended in 2006

    International Nuclear Information System (INIS)

    It is a well-known problem for decision makers to clearly indicate what is meant by 'sustainable development'. Scientific research approaches in the field seem to be divided between the 'objective' approach of the subject (argued to be based on 'hard' scientific facts, e.g. risk assessment, environmental impact assessment, various indicator systems, etc.) and more 'subjective' or 'participatory' approaches (argued to incorporate 'ethical values', 'worldviews', 'cultural perspectives', etc.). Another (related) division seems to be between approaches which acknowledge and conceptualise their role in the political sphere, and others which deny, pass over or minimise such a role. In this PhD research, we aim to go beyond this unproductive distinction between 'objective' and 'subjective' approaches. Our approach is based on the insight (and demonstration) that actually both approaches represent a particular interpretation of more general justification schemes (and are both inherently political). In order to substantiate this point of view, four research tracks were followed: 1) a (meta-) theoretical investigation of sustainability conceptions, 2) an analysis of the operationalisation of sustainability in various governance strategies, 3) two case-studies, and 4) the development of a practical proposal for sustainable energy governance

  2. Humanitarian mine action - Test and evaluation - Part 2: Soil characterization for metal detector and ground penetrating radar performance

    OpenAIRE

    L. CAPINERI

    2009-01-01

    CEN Workshop on soil characterisation for metal detector and ground penetrating radar performance. Produce a second part for the CEN Workshop AgreementCEN Workshop Agreement CWA (CEN Workshop Agreement) Note: an agreement developed by a CEN Workshop, which reflects the consensus of identified individuals and organizations responsible for its contents. on TestTest determination of one or more characteristics according to a procedure. [ISO 9000:2000] and EvaluationEvaluation ...

  3. Binding of Euplotes octocarinatus centrin with target peptide melittin

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    Interactions between model target peptide melittin (ME) and Euplotes octocarinatus centrin (EoCen) were investigated by fluorescence spectra, circular dichroism (CD) spectra and native polyacrylamide gel electrophoresis (PAGE). In 0.1 mol/L N-2-hydroxyethylpiperazine-N-2-ethanesulfonic acid (Hepes) and 150 mmol/L NaCl at pH 7.4, EoCen and isolated short C-terminal domain of EoCen (SC-EoCen) form 1:1 peptide:protein complexes. However, no detectable signal changes can be observed while isolated N-terminal domain of EoCen (N-EoCen) or isolated long C-terminal domain of EoCen (LC-EoCen) was added into solution of ME. The interaction between EoCen and ME is specified exclusively for the short C-terminal domain of EoCen. On the basis of fluorescence titration curves, the conditional binding constants of ME with EoCen and SC-EoCen were calculated to be logKME-EoCen = 6.81±0.33 and logKME-SC-EoCen = 6.51±0.45, respectively.

  4. 76 FR 20451 - Proposed Collection; Comment Request; Renewal Without Change of the Registration of Money...

    Science.gov (United States)

    2011-04-12

    ... Registration of Money Services Business, FinCEN Form 107 AGENCY: Financial Crimes Enforcement Network (``FinCEN... revised form, Registration ] of Money Services Business, FinCEN Form 107. The form will be used by currency dealers or exchangers; check cashers; issuers of traveler's checks, money orders or stored...

  5. Experiment list: SRX210701 [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Diagnosis=Adenocarcinoma 116514293,96.8,4.2,943 GSM1053822: eCenH3 MNase input (replicate 2); Homo sapiens;... ChIP-Seq source_name=eCenH3 MNase input || cell line=eCenH3 HeLa S3 || cell type=Cervical cancer || genotyp

  6. Experiment list: SRX210700 [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Diagnosis=Adenocarcinoma 90141786,97.9,3.9,840 GSM1053821: eCenH3 MNase input (replicate 1); Homo sapiens; ...ChIP-Seq source_name=eCenH3 MNase input || cell line=eCenH3 HeLa S3 || cell type=Cervical cancer || genotype

  7. Laboratório de transplante celular: novo cenário de atuação do enfermeiro Laboratorio de trasplante celular: nuevo escenario de la actuación de la enfermera Cellular transplantation laboratory: a new field of action for nurses

    OpenAIRE

    Maria Inês Corradi; Sandra Honorato da Silva

    2008-01-01

    O trabalho apresenta um relato de experiência sobre a atuação do enfermeiro num laboratório de transplante celular. Este Laboratório tem por objetivos realizar isolamentos de células produtoras de insulina para transplante em humanos. O enfermeiro como membro da equipe interdisciplinar participa da estruturação da área física, do delineamento dos processos de trabalho, da elaboração de protocolos e de programa de capacitação da equipe. As principais atividades realizadas pelo enfermeiro inclu...

  8. Stručný přehled vývoje využití indikačních plynů samovznícení uhlí a výhled dalšího řešení

    OpenAIRE

    Snopek Lukáš; Adamus Alois

    2012-01-01

    One of the most serious risks associated with mining using mainly underground methods is the risk of mine fires. Causes of these fires can be exogenous (external) or endogenous (internal). The authors of the article pay attention to endogenous fires in coal mines, especially to the timely indication of them. As already mentioned in many contributions, spontaneous combustion is a complicated process that passes, in the final stage, into a mine open fire. The localization of a place of such dan...

  9. Propuesta didáctica para el uso de cen el diseño de investigación en alumnos de 2º año curso regular diurno de la facultad de cultura física

    OpenAIRE

    Aguilar Rodríguez, Adriana

    2005-01-01

    El estudio de la asignatura Metodología de la investigación, obedece a la necesidad de cumplir con uno de los objetivos de los deberes de cargo de un profesional en la Cultura Física y es el de saber investigar en aquellos aspectos de la problemática de este campo social. Los estudios de la Cultura Física se inician en 1973 en la Escuela Superior de Educación Física. Este primer plan tuvo una duración de cuatro años y partía de un tronco común bastante amplio con profundización, bien en...

  10. Control del risc de revelació estadística en la difusió de microdades de població, aplicat al cas d'una mostra d'individus procedent del cens de la població de Catalunya de 1991

    OpenAIRE

    Garín i Ramírez, Alfons

    1996-01-01

    Las oficinas de estadística oficial responden al compromiso de difundir la información disponible; esta información se ha obtenido bajo condiciones de confidencialidad; a través de la elaboración de una muestra de registros individuales anónimos (MRA), el Institut d'Estadística de Catalunya cumple el doble compromiso: difundir información y preservar el secreto estadístico. Este trabajo describe el proceso de análisis y control de la revelación estadística aplicada a la muestra de microdatos....

  11. Estrutura etária, bônus demográfico e população economicamente ativa no Brasil: Cenários de longo prazo e suas implicações para o mercado de trabalho

    OpenAIRE

    Alves, José Eustáquio Diniz; Vasconcelos, Daniel de Santana; Alves de Carvalho, Angelita

    2010-01-01

    A Comissão Econômica para a América Latina e o Caribe (Cepal) e o Instituto de Pesquisa Econômica Aplicada (Ipea) mantêm atividades conjuntas desde 1971, abrangendo vários aspectos do estudo do desenvolvimento econômico e social do Brasil, da América Latina e do Caribe. A partir de 2010, os Textos para Discussão Cepal-Ipea passaram a constituir instrumento de divulgação dos trabalhos realizados entre as duas instituições. Os textos divulgados por meio desta Série são parte do Programa de Trab...

  12. Konfirmační faktorová analýza české verze zkráceného "revidovaného Eysenckova osobnostního dotazníku" na vzorku českých studentů

    Czech Academy of Sciences Publication Activity Database

    Navrátil, Marek; McGuckin, C.; Lewis, Ch. A.; Shevlin, M.; Francis, L. J.

    2003-01-01

    Roč. 47, č. 5 (2003), s. 451-459. ISSN 0009-062X Institutional research plan: CEZ:AV0Z7025918 Keywords : Eysenck Personality Questionnaire Revised Abbreviated * confirmatory factor analysis Subject RIV: AN - Psychology Impact factor: 0.232, year: 2003

  13. Currículo e deficiência: análise de publicações brasileiras no cenário da educação inclusiva Curriculum and disability: analysis of brazilian publications in the scenario of inclusive education

    Directory of Open Access Journals (Sweden)

    Lúcia Pereira Leite

    2013-03-01

    Full Text Available A educação inclusiva envolve dimensões político-administrativas e pedagógicas. O currículo é umas dessas dimensões, e as adequações curriculares aparecem como uma estratégia para que sejam atendidos os princípios de uma escola para todos. Este estudo objetiva caracterizar o campo de estudos da educação inclusiva, por meio de uma revisão da literatura publicada entre os anos 2000 e 2010, em periódicos da área de educação, disponíveis no banco de dados Scielo. As palavras-chave utilizadas foram curricular, currículo, deficiência, educação especial e necessidades especiais. Os resultados demonstram que as produções na área são escassas no que diz respeito às estratégias para efetivação da educação inclusiva, limitando-se, prioritariamente, a reflexões e discussões teóricas que envolvem os princípios e políticas educacionais, pouco retratando experiências didático-pedagógicas que promovam ajustes curriculares e/ou formas de flexibilização do ensino.The Inclusive Education involves political, administrative and pedagogical dimensions. The curriculum is one of these dimensions, and adaptation of curriculum appears as a strategy to comply the principles of a school for all. This study aims characterize the inclusive education field, through a literature review between 2000 and 2010 in Education journals available in SciELo database. The keywords used were "curriculum", "disability", "special education" and "special needs". Results demonstrate that there are scarce productions with respect to strategies for Inclusive Education effectiveness, restricting primarily to theoretical reflections and discussions that involving the educational principles and policies, portraying little didactic and pedagogical experiences that promote curricular adaptation and/or teaching flexible forms.

  14. Vida, saúde e trabalho: dialogando sobre qualidade de vida no trabalho em um cenário de precarização Life, health and work: a discussion about quality of work life in a scenario of precariousness

    OpenAIRE

    Milton Athayde; Jussara Brito

    2009-01-01

    Com este artigo, pretendemos dialogar com o texto elaborado por Padilha, base para o debate neste número da revista, tendo como desafio discutir algumas das questões que emergem do artigo em foco. Neste mesmo movimento, aproveitamos para assinalar algumas de nossas posições a respeito. Iniciamos colocando em pauta a urgência de uma perspectiva crítica e afirmativa da potência da vida frente aos impedimentos e constrangimentos tão frequentes e poderosos (como o processo de precarização do trab...

  15. Vida, saúde e trabalho: dialogando sobre qualidade de vida no trabalho em um cenário de precarização Life, health and work: a discussion about quality of work life in a scenario of precariousness

    Directory of Open Access Journals (Sweden)

    Milton Athayde

    2009-11-01

    Full Text Available Com este artigo, pretendemos dialogar com o texto elaborado por Padilha, base para o debate neste número da revista, tendo como desafio discutir algumas das questões que emergem do artigo em foco. Neste mesmo movimento, aproveitamos para assinalar algumas de nossas posições a respeito. Iniciamos colocando em pauta a urgência de uma perspectiva crítica e afirmativa da potência da vida frente aos impedimentos e constrangimentos tão frequentes e poderosos (como o processo de precarização do trabalho em curso, tema de nosso segundo tópico. Concluindo o diálogo, colocamos sinteticamente em foco o processo de emergência da questão da 'Qualidade de Vida' e posteriormente a da chamada 'Qualidade de Vida no Trabalho', concluindo por discutir do que se trata.With this article, we intend to discuss the text written by Padilha, a basis for debate on this issue of the magazine, and embrace the challenge of discussing some of the issues that emerge from the referred article. In this same movement we took the opportunity to point out some of our positions on the issue. We began by prioritizing the urgent need for a critical and affirmative perspective of the power of life in relation to the very frequent and powerful impediments and constraints (such as the process of turning the work in progress precarious, the subject of our second topic. To conclude the discussion, we briefly focus on the process of emergence of the issue of 'Quality of Life' and then the so-called 'Quality of Work Life' (QWL, and finally discussing what it is.

  16. Políticas de gestão de pessoas no novo milênio: cenário dos estudos publicados nos periódicos da área de administração entre 2000 e 2010.

    OpenAIRE

    Gisela Demo; Natasha Fogaça; Iara Nunes; Laylla Edrei; Leela Francischeto

    2011-01-01

    Os principais autores da área de gestão de pessoas (GP), como Guest (1987), Legge (2006), Armstrong (2009), Bohlander e Snell (2009) e Wilkinson et al. (2010), concordam que as pessoas assumiram papel estratégico e relevante nas organizações. Destarte, a GP não deve ter papel tradicional de suporte, mas, sim, constituir competência essencial organizacional, uma vez que os recursos humanos são responsáveis pela produção de conhecimento, constituindo uma fonte de vantagem competitiva, devendo s...

  17. Currículo e deficiência: análise de publicações brasileiras no cenário da educação inclusiva Curriculum and disability: analysis of brazilian publications in the scenario of inclusive education

    OpenAIRE

    Lúcia Pereira Leite; Laura Moreira Borelli; Sandra Eli Sartoreto de Oliveira Martins

    2013-01-01

    A educação inclusiva envolve dimensões político-administrativas e pedagógicas. O currículo é umas dessas dimensões, e as adequações curriculares aparecem como uma estratégia para que sejam atendidos os princípios de uma escola para todos. Este estudo objetiva caracterizar o campo de estudos da educação inclusiva, por meio de uma revisão da literatura publicada entre os anos 2000 e 2010, em periódicos da área de educação, disponíveis no banco de dados Scielo. As palavras-chave utilizadas foram...

  18. Spojení dimenzionálního pětifaktorového modelu s kruovým uspořádáním rysů: zkrácený pětifaktorový kruh (AB5C)

    Czech Academy of Sciences Publication Activity Database

    Hřebíčková, Martina; Ostendorf, F.

    2005-01-01

    Roč. 49, č. 4 (2005), s. 302-322. ISSN 0009-062X Institutional research plan: CEZ:AV0Z70250504 Keywords : abridged big five dimensional circumplex * AB5C taxonomy * five-factor model Subject RIV: AN - Psychology Impact factor: 0.241, year: 2005

  19. Peculiaridades do controle da tuberculose em um cenário de violência urbana de uma comunidade carente do Rio de Janeiro Peculiarities of tuberculosis control in a scenario of urban violence in a disadvantaged community in Rio de Janeiro, Brazil

    Directory of Open Access Journals (Sweden)

    Fabiana Barbosa Assumpção de Souza

    2007-06-01

    Full Text Available OBJETIVO: Descrever as dificuldades e peculiaridades encontradas por profissionais de saúde durante o tratamento e a investigação de contatos de pacientes com tuberculose (TB em comunidades carentes. MÉTODOS: Estudo de abordagem qualitativa realizado nas unidades de saúde localizadas na Área Programática 1.0, no município do Rio de Janeiro, Brasil, com taxa de incidência de TB de 240/100.000 habitantes. Foram selecionados para o estudo dois visitadores domiciliares e um auxiliar de enfermagem, responsáveis pela visita e atendimento dos casos de TB e contatos. Os dados foram transcritos e estruturados sob forma de citação, com destaque para as idéias mais predominantes. RESULTADOS: As idéias centrais têm como eixo a dimensão da violência que se expressa através das regras do tráfico de drogas, das barreiras ao deslocamento dos pacientes e profissionais de saúde para o tratamento da TB, e da segurança pública (policiais. CONCLUSÃO: Este estudo fornece dados para reflexão e análise aos formuladores de políticas de saúde e aos órgãos formadores de profissionais de saúde sobre a dificuldade que a violência urbana impõe ao controle da TB em uma comunidade carente.OBJECTIVE: To describe the difficulties and peculiarities encountered by health professionals during the treatment and investigation of contacts of tuberculosis (TB patients in disadvantaged communities. METHODS: A qualitative study carried out at health care facilities in Health Programming Area 1.0, located in the city of Rio de Janeiro, Brazil, which has a TB incidence rate of 240/100,000 inhabitants. From among the professionals responsible for visiting and treating TB cases and their contacts, two home visit agents and one clinical nurse were selected to be interviewed for the study. Data were transcribed and structured in the form of quotations, emphasizing the predominant ideas. RESULTS: The central ideas focus on the issue of violence, one significant facet of which is the set of rules imposed by narcotraffickers, and on the barriers to the movement of patients/health professionals for TB treatment, as well as on public safety (police. CONCLUSION: This study provides public health officials, as well as institutions that graduate health professionals, data for reflection and analysis of the difficulties that urban violence creates for the control of TB in a disadvantaged community.

  20. Přístup ke vzdělání v rozvojovém světě: nástroj vymýcení dětské práce a snížení chudoby

    OpenAIRE

    Coufalíková, Lenka

    2013-01-01

    This thesis deals with child labour, mostly in developing countries, which are also one of the poorest regions of the planet. The aim is to determine the method of comparative analysis here the emphasis on improving children's education can be a tool to eradicate both child labour and poverty. The thesis also deals with the idea that child labour is a consequence or cause of poverty. The theoretical part deals with basic concepts, such as child labour, childhood, the importance of education. ...

  1. Centromere identity is specified by a single centromeric nucleosome in budding yeast

    OpenAIRE

    Furuyama, Suzanne; Biggins, Sue

    2007-01-01

    Chromosome segregation ensures that DNA is equally divided between daughter cells during each round of cell division. The centromere (CEN) is the specific locus on each chromosome that directs formation of the kinetochore, the multiprotein complex that interacts with the spindle microtubules to promote proper chromosomal alignment and segregation during mitosis. CENs are organized into a specialized chromatin structure due to the incorporation of an essential CEN-specific histone H3 variant (...

  2. CENP-A exceeds microtubule attachment sites in centromere clusters of both budding and fission yeast

    OpenAIRE

    Coffman, Valerie C.; Wu, Pengcheng; Parthun, Mark R.; Wu, Jian-Qiu

    2011-01-01

    The stoichiometries of kinetochores and their constituent proteins in yeast and vertebrate cells were determined using the histone H3 variant CENP-A, known as Cse4 in budding yeast, as a counting standard. One Cse4-containing nucleosome exists in the centromere (CEN) of each chromosome, so it has been assumed that each anaphase CEN/kinetochore cluster contains 32 Cse4 molecules. We report that anaphase CEN clusters instead contained approximately fourfold more Cse4 in Saccharomyces cerevisiae...

  3. 31 CFR Appendix M to Subpart A - Financial Crimes Enforcement Network

    Science.gov (United States)

    2010-07-01

    ... determinations under 31 CFR 1.5(h) as to whether to grant requests for records of FinCEN will be made by the... under 31 CFR 1.5(i) with respect to the records of FinCEN will be made by the Director of FinCEN or the... 31 Money and Finance: Treasury 1 2010-07-01 2010-07-01 false Financial Crimes Enforcement...

  4. Phylogenetic Analysis of Fungal Centromere H3 Proteins

    OpenAIRE

    Baker, Richard E.; Rogers, Kelly

    2006-01-01

    Centromere H3 proteins (CenH3's) are variants of histone H3 specialized for packaging centromere DNA. Unlike canonical H3, which is among the most conserved of eukaryotic proteins, CenH3's are rapidly evolving, raising questions about orthology and conservation of function across species. To gain insight on CenH3 evolution and function, a phylogenetic analysis was undertaken on CenH3 proteins drawn from a single, ancient lineage, the Fungi. Using maximum-likelihood methods, a credible phyloge...

  5. Reconstitution of hemisomes on budding yeast centromeric DNA

    OpenAIRE

    Furuyama, Takehito; Codomo, Christine A.; Henikoff, Steven

    2013-01-01

    The structure of nucleosomes that contain the cenH3 histone variant has been controversial. In budding yeast, a single right-handed cenH3/H4/H2A/H2B tetramer wraps the ∼80-bp Centromere DNA Element II (CDE II) sequence of each centromere into a ‘hemisome’. However, attempts to reconstitute cenH3 particles in vitro have yielded exclusively ‘octasomes’, which are observed in vivo on chromosome arms only when Cse4 (yeast cenH3) is overproduced. Here, we show that Cse4 octamers remain intact unde...

  6. Scm3, an essential Saccharomyces cerevisiae centromere protein required for G2/M progression and Cse4 localization

    OpenAIRE

    Stoler, Sam; Rogers, Kelly; Weitze, Scott; Morey, Lisa; Fitzgerald-Hayes, Molly; Baker, Richard E.

    2007-01-01

    A universal mark of centromeric chromatin is its packaging by a variant of histone H3 known as centromeric H3 (CenH3). The mechanism by which CenH3s are incorporated specifically into centromere DNA or the specialized function they serve there is not known. In a genetic approach to identify factors involved in CenH3 deposition, we screened for dosage suppressors of a temperature-sensitive cse4 allele in Saccharomyces cerevisiae (Cse4 is the S. cerevisiae CenH3). Independent screens yielded OR...

  7. Discovery of a close pair of faint dwarf galaxies in the halo of Centaurus A

    CERN Document Server

    Crnojević, D; Caldwell, N; Guhathakurta, P; McLeod, B; Seth, A; Simon, J; Strader, J; Toloba, E

    2014-01-01

    As part of the Panoramic Imaging Survey of Centaurus and Sculptor (PISCeS) we report the discovery of a pair of faint dwarf galaxies (CenA-MM-Dw1 and CenA-MM-Dw2) at a projected distance of $\\sim$90 kpc from the nearby elliptical galaxy NGC5128 (CenA). We measure a tip of the red giant branch distance to each dwarf, finding $D=3.63 \\pm 0.41$ Mpc for CenA-MM-Dw1 and $D=3.60 \\pm 0.41$ Mpc for CenA-MM-Dw2, both of which are consistent with the distance to NGC5128. A qualitative analysis of the color magnitude diagrams indicates stellar populations consisting of an old, metal-poor red giant branch ($\\gtrsim 12$ Gyr, [Fe/H]$\\sim-1.7$ to -1.9). In addition, CenA-MM-Dw1 seems to host an intermediate-age population as indicated by its candidate asymptotic giant branch stars. The derived luminosities ($M_V=-10.9\\pm0.3$ for CenA-MM-Dw1 and $-8.4\\pm0.6$ for CenA-MM-Dw2) and half-light radii ($r_{h}=1.4\\pm0.04$ kpc for CenA-MM-Dw1 and $0.36\\pm0.08$ kpc for CenA-MM-Dw2) are consistent with those of Local Group dwarfs. Cen...

  8. Standardization and standards for dyes and stains used in biology and medicine

    DEFF Research Database (Denmark)

    Lyon, H O; Horobin, R W

    2007-01-01

    more detailed description is given in Appendix A of the rules governing the work of the European Committee for Standardization (CEN) and of the technical co-operation between the International Organization for Standardization (ISO) and CEN (The Vienna Agreement). Finally, a short list of abbreviations...

  9. 77 FR 70547 - Financial Crimes Enforcement Network; Proposed Collection; Comment Request; Renewal Without...

    Science.gov (United States)

    2012-11-26

    ... FinCEN Currency Transaction Reports Currently Approved Electronic Data Fields AGENCY: Financial Crimes... Records Notice for BSA Reports System was most recently published at 77 FR 60014-60022 (October 1, 2012... required to support the FinCEN Currency Transaction Report (``CTR'') filings by financial...

  10. 76 FR 62607 - Comprehensive Iran Sanctions, Accountability, and Divestment Reporting Requirements

    Science.gov (United States)

    2011-10-11

    ... ] report this information to FinCEN upon receiving a specific written request from FinCEN. \\7\\ See 76 FR... information with respect to individual customer accounts and transactions. Three of these same commenters... bank to report that it cannot determine to its satisfaction that the foreign bank does not maintain...

  11. Reproduction in Holothuria (Mertensiothuria) leucospilota (Brandt) from Anjuna, Goa

    Digital Repository Service at National Institute of Oceanography (India)

    Jayasree, V.; Bhavanarayana, P.V.

    stream_size 8 stream_content_type text/plain stream_name Bull_Cen_Mar_Fish_Res_Inst_1994_46_57.pdf.txt stream_source_info Bull_Cen_Mar_Fish_Res_Inst_1994_46_57.pdf.txt Content-Encoding ISO-8859-1 Content-Type text/plain; charset...

  12. EST Table: BP121050 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available BP121050 ceN-4078 10/09/28 35 %/122 aa ref|XP_967620.1| PREDICTED: similar to anopheles stephen...nl|Amel|GB19565-PA 10/09/10 35 %/122 aa gi|91093471|ref|XP_967620.1| PREDICTED: similar to anopheles stephensi ubiquitin, putative [Tribolium castaneum] FS914988 ceN- ...

  13. 76 FR 72878 - Financial Crimes Enforcement Network; Amendment to the Bank Secrecy Act Regulations-Imposition of...

    Science.gov (United States)

    2011-11-28

    ... of Primary Money Laundering Concern AGENCY: Financial Crimes Enforcement Network, Treasury (``FinCEN... (``Iran'') is a jurisdiction of primary money laundering concern pursuant to 31 U.S.C. 5318A. FinCEN is... Act amends the anti- money laundering provisions of the Bank Secrecy Act (``BSA''), codified at 12...

  14. 78 FR 24601 - Order Imposing Recordkeeping and Reporting Obligations on Certain U.S. Financial Institutions...

    Science.gov (United States)

    2013-04-25

    ... of Primary Money Laundering Concern AGENCY: Financial Crimes Enforcement Network, Treasury (``FinCEN... money laundering concern. The Director of FinCEN is issuing an order imposing certain recordkeeping and... be a Financial Institution of Primary Money Laundering Concern (the ``Finding''). Notice of...

  15. Introduction

    International Nuclear Information System (INIS)

    The introduction to the annual report 2006 of the Belgian Nuclear Research Centre SCK-CEN highlights the reorganisation of SCK-CEN that became effective in 2006. An overview is given of the principal activities of Institute for Nuclear Materials Science, the Institute for Advanced Nuclear Systems, the Institute for Environment, Health and Safety and the Institute for Communication, Services and Administration

  16. EST Table: BP120373 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available BP120373 ceN-2172 10/09/28 76 %/104 aa ref|XP_972469.2| PREDICTED: similar to sticks.../09/10 low homology 10/09/10 76 %/104 aa gi|189235128|ref|XP_972469.2| PREDICTED: similar to sticks and stones CG33141-PA [Tribolium castaneum] BP122133 ceN- ...

  17. 76 FR 4747 - Proposed Collection; Comment Request; Bank Secrecy Act Unified Currency Transaction Report...

    Science.gov (United States)

    2011-01-26

    ... published at 73 FR 42405, 42410 (July 21, 2008). Current Action: FinCEN is in the process of designing the... 103. The authority of the Secretary to administer the BSA has been delegated to the Director of FinCEN... structure from XML Schema and example XML files. Dynamic forms can be saved as PDF files or XDP files....

  18. “Point” Centromeres of Saccharomyces Harbor Single Centromere-Specific Nucleosomes

    OpenAIRE

    Henikoff, Steven; Henikoff, Jorja G.

    2012-01-01

    The “point” centromere of budding yeast is genetically defined by an ∼125-bp sequence. Recent fluorescence measurements of kinetochore clusters have suggested that this sequence specifies multiple centromere histone 3 (CenH3) nucleosomes. However, high-resolution mapping demonstrates that there is only one CenH3 nucleosome per centromere, providing biochemical confirmation of the point centromere model.

  19. Integrated inventory information system

    Digital Repository Service at National Institute of Oceanography (India)

    Sarupria, J.S.; Kunte, P.D.

    stream_size 5 stream_content_type text/plain stream_name Handbook_Lib_Archives_Inf_Cen_India_7_214.pdf.txt stream_source_info Handbook_Lib_Archives_Inf_Cen_India_7_214.pdf.txt Content-Encoding ISO-8859-1 Content-Type text...

  20. Alexandria: towards an efficient centralised document management. More efficient business processes

    International Nuclear Information System (INIS)

    The capital of SCK-CEN is the knowledge of its staff. There is an enormous amount of information circulating within the research centre. A centralised management for all documents is also critical to efficiently manage, share and unlock the expertise. Since 2009, SCK-CEN has been working on a document management system: Alexandria. A first test draft was completed in 2010.

  1. Analysis of Tb{sup 3+}- and melittin-binding with the C-terminal domain of centrin in Euplotes octocarinatus

    Energy Technology Data Exchange (ETDEWEB)

    Zhao Yaqin; Diao Xiuling; Yan Jun; Feng Yanan [Key Laboratory of Chemical Biology and Microcular Engineering of Ministry of Education, Shanxi University, Taiyuan 030006 (China); Wang Zhijun [Chemical Department, Changzhi University, Changzhi 046011 (China); Liang Aihua, E-mail: aliang@sxu.edu.cn [Key Laboratory of Chemical Biology and Microcular Engineering of Ministry of Education, Shanxi University, Taiyuan 030006 (China); Yang Binsheng, E-mail: yangbs@sxu.edu.cn [Key Laboratory of Chemical Biology and Microcular Engineering of Ministry of Education, Shanxi University, Taiyuan 030006 (China)

    2012-04-15

    Centrin is a low molecular mass (20 KDa) protein that belongs to the EF-hand superfamily. In this work, the interaction between the Tb{sup 3+}-saturated C-terminal domain of Euplotes octocarinatus centrin (Tb{sub 2}-C-EoCen) and 2-p-toluidinylnaphthalene-6-sulfonate (TNS) was investigated using difference UV-vis spectra and the fluorescence spectra methods. In 100 mM N-2-hydroxy-ethylpiperazine-N-2-ethanesulfonic acid (Hepes) at pH 7.4, with the addition of Tb{sub 2}-C-EoCen, four new peaks were observed at 265 nm, 278 nm, 317 nm and 360 nm by absorptivity compared with blank solution of TNS. At the same time, the reaction could be measured by fluorescence spectra. The fluorescence emission of TNS was shifted from 480 nm to 445 nm in the presence of Tb{sub 2}-C-EoCen. Meanwhile, its fluorescence intensity was increased markedly. The 1:1 stoichiometric ratio of C-EoCen to TNS was confirmed by fluorescence titration curves. The conditional binding constants of TNS with C-EoCen and Tb{sub 2}-C-EoCen were calculated to be log K{sub (C-EoCen-TNS)}=5.32{+-}0.04 M{sup -1} and log K{sub (Tb2-C-EoCen-TNS)}=5.58{+-}0.12 M{sup -1}, respectively. In addition, the protein of Tb{sub 2}-C-EoCen binding with melittin was also studied. Based on the fluorescence titration curves, the 1:1 stoichiometric ratio of Tb{sub 2}-C-EoCen to melittin was confirmed. And the conditional binding constant of C-EoCen with melittin was calculated to be log Ka Prime =6.79{+-}0.17 M{sup -1}. - Highlights: Black-Right-Pointing-Pointer Tb{sup 3+} induced conformational changes of protein C-EoCen from closed state to open state. Black-Right-Pointing-Pointer Conformational changes resulted in the exposure of hydrophobic surfaces on C-EoCen. Black-Right-Pointing-Pointer Tb{sub 2}-C-EoCen may bind with target peptide melittin.

  2. A ordem econômico-comercial internacional: uma análise da evolução do sistema multilateral de comércio e da participação da diplomacia econômica brasileira no cenário mundial The international economic-commercial order: an analysis of the evolution of the multilateral trading system and of the involvement of the brazilian economic diplomacy in the global scenario

    Directory of Open Access Journals (Sweden)

    Ivan Tiago Machado Oliveira

    2007-12-01

    Full Text Available O trabalho traça uma análise histórica do Sistema Multilateral de Comércio (SMC, tendo como foco a sua importância para a conformação da ordem econômica internacional do pós-Segunda Guerra Mundial. A partir de uma perspectiva analítico-evolutiva, faz-se uma apresentação do contexto internacional no qual o sistema multilateral foi gerado e identificam-se as interações entre as transformações históricas mundiais, tanto no plano político quanto no econômico, e a estruturação do Sistema Multilateral de Comércio, desde o Acordo Geral sobre Tarifas e Comércio (em inglês, General Agreement on Tariffs and Trade (GATT até a Organização Mundial do Comércio (OMC. Ademais, o papel desempenhado pela diplomacia econômica brasileira na construção e transformação do SMC será discutido ao longo do presente trabalho. Também são feitas considerações sobre a atual Rodada de negociações multilaterais, a Rodada Doha, e a sua relevância na ótica dos países em desenvolvimento.This work brings a historical analysis of the multilateral trading system, focusing on its importance to the building up of the international economic order, after the Second World War. From an evolutionary perspective, the international context in which the multilateral trading system was created is presented. Moreover, the interactions between world historical transformations and the development of the multilateral trading system, from GATT to WTO, are analyzed, both in political and economic points of view. Furthermore, the role played by the Brazilian economic diplomacy in building and transforming the multilateral trading system is analyzed. Some considerations are also made on the Doha Round of trade talks and its importance to the developing countries.

  3. A compreensão das vulnerabilidades sócio-econômicas no cenário da assistência de enfermagem pediátrica La comprensión del vulnerabilidad social y económica en el escenario de la asistencia de enfermería pediátrica Comprehension of social and economic vulnerability in the scenario of pediatrics nursing care

    Directory of Open Access Journals (Sweden)

    Maria de Lourdes Rodrigues Pedroso

    2010-06-01

    Full Text Available Fatores de vulnerabilidade que afetam o ambiente onde a criança e sua família estão inseridas podem ser traduzidos por condições inadequadas de vida e desenvolvimento. Este estudo objetiva compreender as percepções dos enfermeiros sobre as influências das vulnerabilidades de sócio-econômicas, no cuidado à criança e família, no ambiente de Unidades de Internação Pediátricas em um Hospital Universitário do Município de Porto Alegre, Rio Grande do Sul. Trata-se de uma pesquisa qualitativa na perspectiva de um estudo exploratório descritivo. A coleta de informações ocorreu com nove participantes por meio de entrevistas individuais semi-estruturadas, analisadas conforme referencial da Análise de Conteúdo. Emergiram três categorias de análise, sendo aqui explorada a compreensão do conceito de vulnerabilidade de origem sócio-econômica. Constatou-se que quando situações de vulnerabilidade são corretamente identificadas, o profissional enfermeiro possui condições de estabelecer ações que favoreçam o crescimento e desenvolvimento saudáveis da criança enferma e sua família,Factores de vulnerabilidad que afectan el ambiente donde el niño y su familia están inseridos pueden ser traducidos por condiciones inadecuadas de vida y desenvolvimiento. Este estudio tuvo el objetivo de comprender las percepciones de los enfermeros acerca de las influencias de las vulnerabilidades sociales y económicas en el cuidado al niño y a su familia en el ambiente de Unidades de Internación Pediátricas en un Hospital Universitario de la Municipalidad de Porto Alegre, Rio Grande do Sul, Brasil. Se trata de una pesquisa cualitativa bajo la perspectiva de un estudio exploratorio y descriptivo. La recolección de informaciones fue realizada con nueve participantes por medio de entrevistas individuales semi-estructuradas, analizadas según el referencial del Análisis de Contenido. Emergieron tres categorías de análisis, siendo aquí explorada la comprensión del concepto de vulnerabilidad social y económica. En los resultados, se constató que cuando situaciones de vulnerabilidad son correctamente identificadas el profesional enfermero posee condiciones de establecer acciones que favorezcan el crecimiento y desenvolvimiento saludables del niño enfermo y de su familia.Vulnerability factors that affect the environment where child and family are inserted can be translated by inadequate life conditions and development. This study aimed at understanding the perceptions of nurses about the influences of social and economic vulnerabilities upon the care given to the child and his or her family within the environment of Pediatrics Admittance Units in a University Hospital from the Municipality of Porto Alegre, Rio Grande do Sul, Brazil. It is about a qualitative research under the perspective of an exploratory and descriptive study. The collection of information was performed with nine participants by means of individual semi-structured interviews analyzed according to the referential of Content Analysis. Three analysis categories have emerged and the one regarding the comprehension of the social and economic vulnerability concept was explored herein. Results evidenced whenever vulnerability conditions are correctly identified the nursing professional has conditions of establishing actions that favor the healthy growth and development of the sick child and his or her family.

  4. Avaliação tecnológica como competência do enfermeiro: reflexões e pressupostos no cenário da ciência e tecnologia Evaluación tecnológica como comptetencia del enfermero: reflexiones y presuposiciones en el escenario de la ciencia y tecnología Technical evaluation as a competence of the nurse: reflections and pressupositions in the scenario of science and technology

    Directory of Open Access Journals (Sweden)

    Evanisa Maria Arone

    2006-08-01

    Full Text Available Este artigo aborda os conceitos e pressupostos relacionados a avaliação tecnológica, na modalidade equipamentos, à luz do sistema nacional de ciência e tecnologia. Evidencia a necessidade do enfermeiro desenvolver esta competência desde a sua formação, como ferramental necessário para se interessar, realizar e participar de pesquisas, neste universo de atuação interdisciplinar, ainda pouco explorado pelos profissionais. Este trabalho tem a finalidade de contribuir para uma discussão do gerenciamento da assistência de enfermagem mais humanizada, com qualidade, eficácia, efetividade e segurança propiciando garantir os resultados para os quais as tecnologias foram desenvolvidas e incorporadas, nos serviços de saúde.Este artículo aborda los conceptos y presuposiciones relacionadas a la evaluación tecnológica, en la modalidad equipamientos, sobre la óptica del sistema nacional de ciencias y tecnología. Evidenciando la necesidad del profesional enfermero desenvolver competencias para tal, desde su formación, como herramienta necesaria para se interesar, realizar y participar de investigaciones, en este universo de actuación interdisciplinario, todavía poco explorado por profesionales. Tiene como finalidad la contribución para una discussión de la gerencia y una asistencia de enfermaría mas humanizada, con cualidad, eficacia, efectividad y seguridad proporcionando garantir los resultados para los cuales las tecnologías fueran desarrolladas e incorporadas, en los servicios de salud.This article approaches the concepts and presuppositions related to technical evaluation, through the use of equipment, inspired by the national system of science and technology. It shows the necessarily of the professional nurse to develop competencies such that, beginning with their formation, they are stimulated to interest themselves, create and participate in research projects. Today's universe is one of interdisciplinary influences, still little explored by professionals. The article has as it's goal to contribute to the discussion of the management and technical assistance of a more humane nursing profession, marked by quality, efficacy, effectiveness and security. In this way guaranteeing positive results for those technologies, which were developed in the service of health.

  5. Zkrácení celkové průběžné doby u automobilového výrobce v zájmu zvýšení jeho konkurenceschopnosti. Možný přínos řešení na úrovni Supply Chain Škoda Auto a.s.

    OpenAIRE

    Paclt, Ondřej

    2008-01-01

    Master Thesis studies integrated Supply Chains and their particularities in the automotive industry and searches for ways how to rationalize them. It aims to find means how to make the lead times shorter, with the focus on an automobile producer in an effort to increase its competitiveness. It is geared to identify points in its Supply Chain, where flaws and errors or delays in the process of customer order fulfillment might occur. It also concentrates on the possibility of managing customer ...

  6. Jan Lasitský, K navrácení se na první opuštěnou lásku Jednoty bratrské rozptýleným jejim z Čech a z Moravy ostatkům jménem Božím učiněné napomenutí

    Czech Academy of Sciences Publication Activity Database

    Havelka, Tomáš (ed.); Just, Jiří (ed.); Petráčková, V. (ed.)

    Praha : Academia, 2013, s. 155-294. ISBN 978-80-200-2244-8 Institutional support: RVO:67985955 Keywords : Comenius * critical edition * Unity of Brethren * the life of church in 17th century Subject RIV: AA - Philosophy ; Religion

  7. Nursing diagnoses in trauma victims with fatal outcomes in the emergency scenario Diagnósticos de enfermería en víctimas fatales provenientes de trauma en el escenario de la atención de emergencia Diagnósticos de enfermagem em vítimas fatais decorrentes de trauma no cenário da emergência

    Directory of Open Access Journals (Sweden)

    Ana Maria Calil Sallum

    2012-02-01

    Full Text Available The objective of this study was to identify and analyze the nursing diagnoses that constitute risk factors for death in trauma victims in the first 6 hours post-event. This is a cross-sectional, descriptive and exploratory study using quantitative analysis. A total of 406 patients were evaluated over six months of data collection in a tertiary hospital in the municipality of São Paulo, according to an instrument created for this purpose. Of the total, 44 (10.7% suffered death. Multivariate analysis indicated the nursing diagnoses ineffective respiratory pattern, impaired spontaneous ventilation, risk of bleeding and risk of ineffective gastrointestinal tissue perfusion as risk factors for death and ineffective airway clearance, impaired comfort, and acute pain as protective factors, data that can direct health teams for different interventionist actions faced with the complexity of the trauma.El objetivo de este estudio fue identificar y analizar diagnósticos de enfermería que constituyen factores de riesgo para muerte en víctimas de trauma en las primeras 6 horas después del evento. Se trata de un estudio transversal, descriptivo y exploratorio con análisis cuantitativo. Se evaluó 406 pacientes durante seis meses de recolección en un hospital terciario del Municipio de São Paulo, según instrumento creado para esa finalidad. Del total, 44 (10,7% evolucionaron para muerte. El análisis multivariado apuntó los diagnósticos de enfermería: patrón respiratorio ineficaz, ventilación espontánea perjudicada, riesgo de sangramiento y riesgo de perfusión tisular gastrointestinal ineficaz, como factores de riesgo para muerte; la desobstrucción ineficaz de vías aéreas, confort perjudicado y dolor agudo como factores de protección, datos que pueden orientar a los equipos de salud para realizar acciones intervencionistas diferenciadas frente a la complejidad del trauma.O objetivo deste estudo foi identificar e analisar diagnósticos de enfermagem que constituem fatores de risco para óbito, em vítimas de trauma, nas primeiras 6 horas após o evento. Trata-se de estudo transversal, descritivo e exploratório, com análise quantitativa. Avaliaram-se 406 pacientes durante seis meses de coleta em um hospital terciário do município de São Paulo, segundo instrumento criado para essa finalidade. Do total, 44 (10,7% evoluíram para óbito. Análise multivariada apontou os diagnósticos de enfermagem padrão respiratório ineficaz, ventilação espontânea prejudicada, risco de sangramento e risco de perfusão tissular gastrintestinal ineficaz como fatores de risco para óbito e desobstrução ineficaz de vias aéreas, conforto prejudicado e dor aguda como fatores de proteção, dados que podem direcionar as equipes de saúde para ações intervencionistas diferenciadas frente à complexidade do trauma.

  8. Nursing diagnoses in trauma victims with fatal outcomes in the emergency scenario Diagnósticos de enfermería en víctimas fatales provenientes de trauma en el escenario de la atención de emergencia Diagnósticos de enfermagem em vítimas fatais decorrentes de trauma no cenário da emergência

    OpenAIRE

    Ana Maria Calil Sallum; Jair Lício Ferreira dos Santos; Fernão Dias de Lima

    2012-01-01

    The objective of this study was to identify and analyze the nursing diagnoses that constitute risk factors for death in trauma victims in the first 6 hours post-event. This is a cross-sectional, descriptive and exploratory study using quantitative analysis. A total of 406 patients were evaluated over six months of data collection in a tertiary hospital in the municipality of São Paulo, according to an instrument created for this purpose. Of the total, 44 (10.7%) suffered death. Multivariate a...

  9. A compreensão das vulnerabilidades sócio-econômicas no cenário da assistência de enfermagem pediátrica La comprensión del vulnerabilidad social y económica en el escenario de la asistencia de enfermería pediátrica Comprehension of social and economic vulnerability in the scenario of pediatrics nursing care

    OpenAIRE

    Maria de Lourdes Rodrigues Pedroso; Maria da Graça Corso da Motta

    2010-01-01

    Fatores de vulnerabilidade que afetam o ambiente onde a criança e sua família estão inseridas podem ser traduzidos por condições inadequadas de vida e desenvolvimento. Este estudo objetiva compreender as percepções dos enfermeiros sobre as influências das vulnerabilidades de sócio-econômicas, no cuidado à criança e família, no ambiente de Unidades de Internação Pediátricas em um Hospital Universitário do Município de Porto Alegre, Rio Grande do Sul. Trata-se de uma pesquisa qualitativa na per...

  10. A ordem econômico-comercial internacional: uma análise da evolução do sistema multilateral de comércio e da participação da diplomacia econômica brasileira no cenário mundial The international economic-commercial order: an analysis of the evolution of the multilateral trading system and of the involvement of the brazilian economic diplomacy in the global scenario

    OpenAIRE

    Ivan Tiago Machado Oliveira

    2007-01-01

    O trabalho traça uma análise histórica do Sistema Multilateral de Comércio (SMC), tendo como foco a sua importância para a conformação da ordem econômica internacional do pós-Segunda Guerra Mundial. A partir de uma perspectiva analítico-evolutiva, faz-se uma apresentação do contexto internacional no qual o sistema multilateral foi gerado e identificam-se as interações entre as transformações históricas mundiais, tanto no plano político quanto no econômico, e a estruturação do Sistema Multilat...

  11. Centromeric Transcription Regulates Aurora-B Localization and Activation

    Directory of Open Access Journals (Sweden)

    Michael D. Blower

    2016-05-01

    Full Text Available Centromeric transcription is widely conserved; however, it is not clear what role centromere transcription plays during mitosis. Here, I find that centromeres are transcribed in Xenopus egg extracts into a long noncoding RNA (lncRNA; cen-RNA that localizes to mitotic centromeres, chromatin, and spindles. cen-RNAs bind to the chromosomal passenger complex (CPC in vitro and in vivo. Blocking transcription or antisense inhibition of cen-RNA leads to a reduction of CPC localization to the inner centromere and misregulation of CPC component Aurora-B activation independently of known centromere recruitment pathways. Additionally, transcription is required for normal bipolar attachment of kinetochores to the mitotic spindle, consistent with a role for cen-RNA in CPC regulation. This work demonstrates that cen-RNAs promote normal kinetochore function through regulation of the localization and activation of the CPC and confirm that lncRNAs are components of the centromere.

  12. CENTAURUS A AS A POINT SOURCE OF ULTRAHIGH ENERGY COSMIC RAYS

    International Nuclear Information System (INIS)

    We probe the possibility that Centaurus A (Cen A) is a point source of ultrahigh energy cosmic rays (UHECRs) observed by Pierre Auger Observatory (PAO), through the statistical analysis of the arrival direction distribution. For this purpose, we set up the Cen A dominance model for the UHECR sources, in which Cen A contributes the fraction f C of the whole UHECR with energy above 5.5 × 1019 eV and the isotropic background contributes the remaining 1 – f C fraction. The effect of the intergalactic magnetic fields on the bending of the trajectory of Cen A originated UHECRs is parameterized by the Gaussian smearing angle θ s. For the statistical analysis, we adopted the correlational angular distance distribution (CADD) for the reduction of the arrival direction distribution and the Kuiper test to compare the observed and the expected CADDs. We identify the excess of UHECRs in the Cen A direction and fit the CADD of the observed PAO data by varying two parameters f C and θ s of the Cen A dominance model. The best-fit parameter values are f C ≈ 0.1 (the corresponding Cen A fraction observed at PAO is f C,PAO ≈ 0.15, that is, about 10 out of 69 UHECRs) and θ s = 5° with the maximum likelihood L max = 0.29. This result supports the existence of a point source smeared by the intergalactic magnetic fields in the direction of Cen A. If Cen A is actually the source responsible for the observed excess of UHECRs, the rms deflection angle of the excess UHECRs implies the order of 10 nG intergalactic magnetic field in the vicinity of Cen A.

  13. DISCOVERY OF A CLOSE PAIR OF FAINT DWARF GALAXIES IN THE HALO OF CENTAURUS A

    International Nuclear Information System (INIS)

    As part of the Panoramic Imaging Survey of Centaurus and Sculptor (PISCeS), we report the discovery of a pair of faint dwarf galaxies (CenA-MM-Dw1 and CenA-MM-Dw2) at a projected distance of ∼90 kpc from the nearby elliptical galaxy NGC 5128 (CenA). We measure a tip of the red giant branch distance to each dwarf, finding D = 3.63 ± 0.41 Mpc for CenA-MM-Dw1 and D = 3.60 ± 0.41 Mpc for CenA-MM-Dw2, both of which are consistent with the distance to NGC 5128. A qualitative analysis of the color-magnitude diagrams indicates stellar populations consisting of an old, metal-poor red giant branch (≳12 Gyr, [Fe/H] ∼ –1.7 to –1.9). In addition, CenA-MM-Dw1 seems to host an intermediate-age population as indicated by its candidate asymptotic giant branch stars. The derived luminosities (MV = –10.9 ± 0.3 for CenA-MM-Dw1 and –8.4 ± 0.6 for CenA-MM-Dw2) and half-light radii (rh = 1.4 ± 0.04 kpc for CenA-MM-Dw1 and 0.36 ± 0.08 kpc for CenA-MM-Dw2) are consistent with those of Local Group dwarfs. CenA-MM-Dw1's low central surface brightness (μ V, 0 = 27.3 ± 0.1 mag arcsec–2) places it among the faintest and most extended M31 satellites. Most intriguingly, CenA-MM-Dw1 and CenA-MM-Dw2 have a projected separation of only 3 arcmin (∼3 kpc): we are possibly observing the first, faint satellite of a satellite in an external group of galaxies

  14. Center for Nuclear Safety in Central and Eastern Europe: a platform for co-operation

    International Nuclear Information System (INIS)

    The paper presents a summary of the current status and the activities of the Centre of Nuclear Safety in Central and Eastern Europe (CENS). The CENS is a non-profit and independent association supported by the Swiss and Slovak Governments. The main mission of the CENS is to provide an independent platform for technical co-operation between the regulatory authorities of the Western and Eastern countries. The key partners of the CENS are the Swiss Federal Nuclear Safety Inspectorate (HSK), the International Atomic Energy Agency (IAEA), the US Department of Energy (US DOE), the Nuclear Regulatory Authority of the Slovak Republic (UJD), the Gesellschaft fuer Anlagen-und Reaktorsicherheit mbH (GRS), Germany and the Institute of Radiation Protection and Nuclear Safety (IRSN), France. The CENS programs for 2003-2004 are presented. It can be considered as a complement to the IAEA activities in the area of short-term and event urgent planning. CENS projects as an example are presented. CENS proposals for co-operation with the Bulgarian institutions are made in connection with the topics of the forum round table discussions

  15. Characterization of melittin binding to Euplotes octocarinatus centrin

    Science.gov (United States)

    Zhao, Yaqin; Feng, Jiuying; Wang, Zhijun; Liang, Aihua; Yang, Binsheng

    2008-09-01

    In the presence of 1.0 mM Ca 2+, the interaction between Euplotes octocarinatus centrin (EoCen) and melittin (ME) was studied by means of fluorescence spectra. In 0.1 M N-2-hydroxyethylpiperazine- N-2-ethanesulfonic acid (Hepes) and 150 mM NaCl at pH 7.4, fluorescence peak of ME was observed at about 353 nm indicating that micro-environment of Tryptophan (Trp) residue in ME was hydrophilic. With the addition of 3.2 × 10 -4 M calcium saturated EoCen (holoEoCen), the peak of ME was blue-shifted to 339 nm, which may be resulted from micro-environmental changes of the peptide. At the same time, fluorescence emission of ME was increased significantly suggesting that new complex of ME-holoEoCen was formed under the experimental conditions. Based on the fluorescence titration curves, the 1:1 stoichiometric ratio of holoEoCen to ME was confirmed. In addition, the conditional binding constant of holoEoCen with ME was calculated to be log KME-holoEoCen = 6.59 ± 0.14.

  16. Working memory performance is related to intrinsic resting state functional connectivity changes in community-dwelling elderly cohort.

    Science.gov (United States)

    Charroud, Céline; Le Bars, Emmanuelle; Deverdun, Jérémy; Steffener, Jason; Molino, François; Abdennour, Meriem; Portet, Florence; Bonafe, Alain; Stern, Yaakov; Ritchie, Karen; Akbaraly, Tasnime N; Menjot de Champfleur, Nicolas

    2016-07-01

    Characterization of normal age-related changes in resting state brain networks associated with working memory performance is a major prerequisite for studying neurodegenerative diseases. The aim of this study was to investigate the relationship between performing a working memory task (under MRI) and resting-state brain networks in a large cohort of healthy elderly subjects (n=337). Functional connectivity and interactions between networks were assessed within the default mode (DMN), salience (SN), and right and left central executive (CEN) networks in two groups of subjects classed by their performance (low and high). The low performance group showed lower functional connectivity in both the DMN and SN, and higher functional connectivity in the right and left CEN compared to the high performance group. Overall the functional connectivity within the DMN and the CEN were correlated. The lower functional connectivity within the DMN and SN in the low performance group is suggestive of altered attentional and memory processes and/or altered motivation. The higher functional connectivity within the CEN could be related to compensatory mechanisms, without which the subjects would have even lower performances. The correlation between the DMN and CEN suggests a modulation between the lower functional connectivity within the DMN and the higher functional connectivity within the CEN when performance is reduced. Finally, this study suggests that performance modifications in healthy elderly subjects are associated with reorganization of functional connectivity within the DMN, SN, and CEN. PMID:27234057

  17. Monitoring of nuclear accidents

    International Nuclear Information System (INIS)

    No matter how extensive the safety measures might be in and around nuclear sites, an incident can never be entirely ruled out. SCK-CEN is a specialist in radiological evaluations, in order to determine the impact of ionising radiation or a discharge of radionuclides on man and the environment. In August 2008, a team of SCK-CEN researchers participated in the radiological monitoring of the environment after an incident at the National Institute of Radio Elements (IRE) in Fleurus. SCK-CEN also conducted thyroid gland measurements in the population. The incident provided useful lessons on dealing with nuclear emergency situations.

  18. Lack of independent prognostic and predictive value of centromere 17 copy number changes in breast cancer patients with known HER2 and TOP2A status

    DEFF Research Database (Denmark)

    Nielsen, Kirsten Vang; Ejlertsen, Bent; Møller, Susanne;

    2011-01-01

    The clinical benefit of anthracyclines has been connected to HER2 status, TOP2A status and centromere 17 copy numbers (CEN-17). Data from a clinical trial randomizing patients to anthracyclines was used to assess whether the number of CEN-17 in breast cancers may predict incremental responsiveness...... determined in normal breast were applied to data on 767 patients with known HER2 and TOP2A status randomized to anthracyclines in the DBCG 89D trial. CEN-17 ploidy levels were in cut sections from the 767 breast cancer patients established as: Haploid: ≤1.25 (10%), diploid: 1.26-2.09 (60%), triploid: 2...

  19. Transgenerational propagation and quantitative maintenance of paternal centromeres depends on Cid/Cenp-A presence in Drosophila sperm

    OpenAIRE

    Raychaudhuri, Nitika; Dubruille, Raphaelle; Orsi, Guillermo A.; Bagheri, Homayoun C.; Loppin, Benjamin; Lehner, Christian F.

    2012-01-01

    In Drosophila melanogaster, as in many animal and plant species, centromere identity is specified epigenetically. In proliferating cells, a centromere-specific histone H3 variant (CenH3), named Cid in Drosophila and Cenp-A in humans, is a crucial component of the epigenetic centromere mark. Hence, maintenance of the amount and chromosomal location of CenH3 during mitotic proliferation is important. Interestingly, CenH3 may have different roles during meiosis and the onset of embryogenesis. In...

  20. Recurrent evolution of DNA-binding motifs in the Drosophila centromeric histone

    OpenAIRE

    Malik, Harmit S.; Vermaak, Danielle; Henikoff, Steven

    2002-01-01

    All eukaryotes contain centromere-specific histone H3 variants (CenH3s), which replace H3 in centromeric chromatin. We have previously documented the adaptive evolution of the Drosophila CenH3 (Cid) in comparisons of Drosophila melanogaster and Drosophila simulans, a divergence of ≈2.5 million years. We have proposed that rapidly changing centromeric DNA may be driving CenH3's altered DNA-binding specificity. Here, we compare Cid sequences from a phylogenetically broader group of Drosophila s...

  1. The AAA-ATPase molecular chaperone Cdc48/p97 disassembles sumoylated centromeres, decondenses heterochromatin, and activates ribosomal RNA genes

    OpenAIRE

    Mérai, Zsuzsanna; Chumak, Nina; García-Aguilar, Marcelina; Hsieh, Tzung-Fu; Nishimura, Toshiro; Schoft, Vera K.; Bindics, János; Ślusarz, Lucyna; Arnoux, Stéphanie; Opravil, Susanne; Mechtler, Karl; Zilberman, Daniel; Fischer, Robert L.; Tamaru, Hisashi

    2014-01-01

    Centromeres are the fundamental unit required for segregation of chromosomes during mitosis and meiosis, and they are defined by the centromere-specific histone H3 variant (CenH3)/centromere protein A (CENP-A). In contrast to the relatively well-known process of de novo assembly of CenH3 at centromeres, little is known of how CenH3 is actively removed, leading to centromere disassembly, an essential biological process during the life of a cell. This study describes the process of centromere d...

  2. Better detection for a safer world. New developments that give a clear picture of radioactivity

    International Nuclear Information System (INIS)

    The article discusses work performed by the Belgian Nuclear Research Center SCK-CEN in developing techniques for the detection and monitoring of radioactivity over large areas. Special emphasis is on techniques for filtering out interference from xenon on readings.

  3. Reflection group on 'Expert Culture'

    International Nuclear Information System (INIS)

    As part of SCK-CEN's social sciences and humanities programme, a reflection group on 'Expert Culture' was established. The objectives of the reflection group are: (1) to clarify the role of SCK-CEN experts; (2) to clarify the new role of expertise in the evolving context of risk society; (3) to confront external views and internal SCK-CEN experiences on expert culture; (4) to improve trust building of experts and credibility of SCK-CEN as a nuclear actor in society; (5) to develop a draft for a deontological code; (6) to integrate the approach in training on assertivity and communication; (7) to create an output for a topical day on the subject of expert culture. The programme, achievements and perspectives of the refection group are summarised

  4. Mol - Research Division report 1987 - 2

    International Nuclear Information System (INIS)

    This report covers the research activities at the SCK-CEN, MOl, during the second semester of 1987. It deals with materials physics, nuclear physics, metallurgy, ceramics, nuclear chemistry, chemical engineering, biology, nuclear metrology and analytical chemistry. (MCB)

  5. Mol - Research Division report 1987 - 1

    International Nuclear Information System (INIS)

    This report covers the research activities at the SCK-CEN, Mol, during the first semester of 1987. It deals with material physics, nuclear physics, metallurgy, ceramics, nuclear chemistry, chemical engineering, biology, nuclear metrology and analytical chemistry. (MCB)

  6. Safeguards and Physics Measurements: Services

    International Nuclear Information System (INIS)

    SCK-CEN's department of Safeguards and Physics Measurements provides a wide variety of internal and external services including dosimetry, calibration, instrumentation, whole body counting, safeguards and non-destructive analysis. Main developments in these areas in 1999 are described

  7. The Rotation of Sub-Populations in omega Centauri

    CERN Document Server

    Pancino, E; Ferraro, F R; Bellazzini, M

    2007-01-01

    We present the first result of the Ital-FLAMES survey of red giant branch (RGB) stars in omega Cen. Radial velocities with a precision of ~0.5 km/s are presented for 650 members of omega Cen observed with FLAMES-Giraffe at the Very Large Telescope. We found that stars belonging to the metal -poor (RGB-MP), metal-intemediate (RGB-MInt) and metal-rich (RGB-a) sub -populations of Omega Cen are all compatible with having the same rotational pattern. Our results appear to contradict past findings by Norris et al., who could not detect any rotational signature for metal -rich stars. The slightly higher precision of the present measurements and the much larger sample size, especially for the metal-richer stars, appear as the most likely explanation for this discrepancy. The result presented here weakens the body of evidence in favour of a merger event in the past history of omega Cen.

  8. Radiation Protection: introduction

    International Nuclear Information System (INIS)

    The abstract gives an overview and introduction to the activities of SCK-CEN's Radiation Protection department. Main strategic developments and achievements in the field of life sciences, policy supports and medical applications are summarised

  9. Mol - Research Division Report 1986 - 1

    International Nuclear Information System (INIS)

    This report covers the research activities carried out at the SCK-CEN, Mol from the middle of 1985 till mid 1986. It deals with materials science, metallurgy, ceramics, nuclear chemistry, chemical engineering, biology, nuclear meteorology and analytical chemistry. (MCB)

  10. Cryogenic devices attached to electron accelerators

    International Nuclear Information System (INIS)

    The cryoeenic equipement attached to electron accelerators used at the CEN.G for fundamental research on point defects in solids is presented and some of their essential technical characteristics are briefly described

  11. VIOLENT CRIME EXPOSURE CLASSIFICATION AND ADVERSE BIRTH OUTCOMES: A GEOGRAPHICALLY-DEFINED COHORT STUDY

    Science.gov (United States)

    BackgroundArea-level socioeconomic disparities have long been associated with adverse pregnancy outcomes. Crime is an important element of the neighborhood environment inadequately investigated in the public health literature. Using geocoded linked birth, crime and cens...

  12. DNA deletion as a mechanism for developmentally programmed centromere loss.

    Science.gov (United States)

    Lhuillier-Akakpo, Maoussi; Guérin, Frédéric; Frapporti, Andrea; Duharcourt, Sandra

    2016-02-29

    A hallmark of active centromeres is the presence of the histone H3 variant CenH3 in the centromeric chromatin, which ensures faithful genome distribution at each cell division. A functional centromere can be inactivated, but the molecular mechanisms underlying the process of centromere inactivation remain largely unknown. Here, we describe the loss of CenH3 protein as part of a developmental program leading to the formation of the somatic nucleus in the eukaryote Paramecium. We identify two proteins whose depletion prevents developmental loss of CenH3: the domesticated transposase Pgm involved in the formation of DNA double strand cleavages and the Polycomb-like lysine methyltransferase Ezl1 necessary for trimethylation of histone H3 on lysine 9 and lysine 27. Taken together, our data support a model in which developmentally programmed centromere loss is caused by the elimination of DNA sequences associated with CenH3. PMID:26503246

  13. Diversity in the organization of centromeric chromatin.

    Science.gov (United States)

    Steiner, Florian A; Henikoff, Steven

    2015-04-01

    Centromeric chromatin is distinguished primarily by nucleosomes containing the histone variant cenH3, which organizes the kinetochore that links the chromosome to the spindle apparatus. Whereas budding yeast have simple 'point' centromeres with single cenH3 nucleosomes, and fission yeast have 'regional' centromeres without obvious sequence specificity, the centromeres of most organisms are embedded in highly repetitive 'satellite' DNA. Recent studies have revealed a remarkable diversity in centromere chromatin organization among different lineages, including some that have lost cenH3 altogether. We review recent progress in understanding point, regional and satellite centromeres, as well as less well-studied centromere types, such as holocentromeres. We also discuss the formation of neocentromeres, the role of pericentric heterochromatin, and the structure and composition of the cenH3 nucleosome. PMID:25956076

  14. EST Table: BP120654 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available BP120654 ceN-3489 11/12/09 GO hit GO:0006754(ATP biosynthetic process)|GO:0006812(cation transpo ... ase activity, coupled to transmembrane movement of ions , phosphorylative mechanism)|GO:0016020(membrane) 1 ...

  15. Progress report for the year 1982: works on nuclear data in France

    International Nuclear Information System (INIS)

    This progress report gives a presentation of the nuclear physics work carried out at C.E.N. Cadarache, C.E. Bruyeres-le-Chatel, C.E.N. Saclay, C.E.N. Bordeaux-Gradignan and C.E.N. Grenoble during the year 1982. These works dealt with the following subjects: neutron cross sections, radiative capture cross sections, (n,2n) reaction cross sections, fission cross section, elastic and inelastic scattering, study of the fission process, dynamics of fission, desintegration schemes. Each contribution is presented under the laboratory heading where the work was done. At the end of each part, a list of the documents, issued during the year 1982, is given

  16. Abderrahim, H.A

    International Nuclear Information System (INIS)

    The Reactor Physics of SCK-CEN offers expertise in various areas of reactor core physics, ex-core neutron transport; experiments in MTRs and international benchmarks. Progress and achievements in these areas in 1997 are reported

  17. European standardization effort: interworking the goal

    Science.gov (United States)

    Mattheus, Rudy A.

    1993-09-01

    In the European Standardization Committee (CEN), the technical committee responsible for the standardization activities in Medical Informatics (CEN TC 251), has agreed upon the directions of the scopes to follow in this field. They are described in the Directory of the European Standardization Requirements for Healthcare Informatics and Programme for the Development of Standards adopted on 02-28-1991 by CEN/TC 251 and approved by CEN/BT. Top-down objectives describe the common framework and items like terminology, security, more bottom up oriented items describe fields like medical imaging and multi-media. The draft standard is described; the general framework model and object oriented model; the interworking aspects, the relation to ISO standards, and the DICOM proposal. This paper also focuses on all the boundaries in the standardization work, which are also influencing the standardization process.

  18. Biological control of white mold by Trichoderma harzianum in common bean under field conditions

    Directory of Open Access Journals (Sweden)

    Daniel Diego Costa Carvalho

    2015-12-01

    Full Text Available Abstract: The objective of this work was to evaluate Trichoderma harzianum isolates for biological control of white mold in common bean (Phaseolus vulgaris. Five isolates were evaluated for biocontrol of white mold in 'Perola' common bean under field conditions, in the 2009 and 2010 crop seasons. A commercial isolate (1306 and a control treatment were included. Foliar applications at 2x109 conidia mL-1 were performed at 42 and 52 days after sowing (DAS, in 2009, and at 52 DAS in 2010. The CEN287, CEN316, and 1306 isolates decreased the number of Sclerotinia sclerotiorum apothecia per square meter in comparison to the control, in both crop seasons. CEN287, CEN316, and 1306 decreased white mold severity during the experimental period, when compared to the control.

  19. Reflection group on 'Expert Culture'

    Energy Technology Data Exchange (ETDEWEB)

    Eggermont, G

    2000-07-01

    As part of SCK-CEN's social sciences and humanities programme, a reflection group on 'Expert Culture' was established. The objectives of the reflection group are: (1) to clarify the role of SCK-CEN experts; (2) to clarify the new role of expertise in the evolving context of risk society; (3) to confront external views and internal SCK-CEN experiences on expert culture; (4) to improve trust building of experts and credibility of SCK-CEN as a nuclear actor in society; (5) to develop a draft for a deontological code; (6) to integrate the approach in training on assertivity and communication; (7) to create an output for a topical day on the subject of expert culture. The programme, achievements and perspectives of the refection group are summarised.

  20. The loss of one of CERN's most powerful tools could change the dynamics of employment for high-energy physicists in Europe

    CERN Multimedia

    Hellemans, A

    2001-01-01

    With the closure of LEP, CEN now faces a relatively quiet period during which the LHC will be built. Young physicists will have to look to SLAC and Fermilab for opportunities in experiments (2 pages).

  1. Mol - Research Division Report 1986 - 2

    International Nuclear Information System (INIS)

    This report covers the research activities carried out at the SCK-CEN, Mol during the second semester of 1986. It deals with chemistry, chemical engineering, biology, nuclear metrology, analytical chemistry. (MCB)

  2. Forsøg på konkurrenceforvridning

    DEFF Research Database (Denmark)

    Hertz, Kristian Dahl

    1996-01-01

    It seems that large European steel producers have attempted to give steel an unreasonable advantage through the project teams of CEN by postulating strength values for fire exposed constructions, which can only be obtained under unrealistic conditions.......It seems that large European steel producers have attempted to give steel an unreasonable advantage through the project teams of CEN by postulating strength values for fire exposed constructions, which can only be obtained under unrealistic conditions....

  3. We give nature a helping hand. Three initiatives to improve the ecological context

    International Nuclear Information System (INIS)

    More than 256 hectares of the Belgian Nuclear Research Center SCK-CEN estate are included in approved forest management plans. So there is an obligation to take care of the forest area. But there is more to this: both at the request of third parties and on its own initiative, SCK-CEN is taking measures to improve the ecological context and support projects for specific populations.

  4. EST Table: BP119659 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available BP119659 ceN-1169 10/09/28 100 %/194 aa ref|NP_001037177.1| protein star ... [Bombyx mori] gb|AAL510 ... 81.1|AF455272_1 Star ... [Bombyx mori] 10/08/29 31 %/167 aa FBpp0143162|Der ... A 10/09/10 32 %/187 aa gi|300303952|gb|ADJ97385.1| star ... [Tribolium castaneum] FS906952 ceN- ...

  5. EST Table: BP122573 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available BP122573 ceN-6411 10/09/28 96 %/165 aa ref|NP_001037177.1| protein star ... [Bombyx mori] gb|AAL5108 ... 1.1|AF455272_1 Star ... [Bombyx mori] 10/08/29 low homology 10/08/28 n.h 1 ... h 10/09/10 33 %/116 aa gi|300303952|gb|ADJ97385.1| star ... [Tribolium castaneum] FS906952 ceN- ...

  6. EST Table: BP119771 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available BP119771 ceN-1300 10/09/28 100 %/205 aa ref|NP_001037177.1| protein star ... [Bombyx mori] gb|AAL510 ... 81.1|AF455272_1 Star ... [Bombyx mori] 10/08/29 low homology 10/08/28 n.h 1 ... A 10/09/10 31 %/186 aa gi|300303952|gb|ADJ97385.1| star ... [Tribolium castaneum] FS906952 ceN- ...

  7. EST Table: BP119823 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available BP119823 ceN-1368 10/09/28 92 %/175 aa ref|NP_001037177.1| protein star ... [Bombyx mori] gb|AAL5108 ... 1.1|AF455272_1 Star ... [Bombyx mori] 10/08/29 low homology 10/08/28 n.h 1 ... h 10/09/10 33 %/130 aa gi|300303952|gb|ADJ97385.1| star ... [Tribolium castaneum] FS906952 ceN- ...

  8. Project ROSANNE: rolling resistance, skid resistance, and noise emission measurement standards for road surfaces

    OpenAIRE

    Haider, Manfred; CONTER, Marco; Wehr, Reinhard; SANDBERG, Ulf; Anfosso Ledee, Fabienne

    2014-01-01

    ROSANNE is a collaborative project in the Seventh EU Framework Programme which aims at developing/harmonising measurement methods for skid resistance, noise emission and rolling resistance of road pavements as a preparation for standardization. To achieve this, the project will follow the recommendations of key predecessor projects as well as consider ongoing work in CEN and ISO. The project will develop and improve standards in the field of working group CEN/TC 227/WG 5. For the pavement inf...

  9. The unconventional structure of centromeric nucleosomes

    OpenAIRE

    Henikoff, Steven; Furuyama, Takehito

    2012-01-01

    The centromere is a defining feature of the eukaryotic chromosome, required for attachment to spindle microtubules and segregation to the poles at both mitosis and meiosis. The fundamental unit of centromere identity is the centromere-specific nucleosome, in which the centromeric histone 3 (cenH3) variant takes the place of H3. The structure of the cenH3 nucleosome has been the subject of controversy, as mutually exclusive models have been proposed, including conventional and unconventional l...

  10. Stretching the Rules: Monocentric Chromosomes with Multiple Centromere Domains

    OpenAIRE

    Neumann, Pavel; Navratilova, Alice; Schroeder-Reiter, Elizabeth; Koblizkova, Andrea; Steinbauerova, Veronika; Chocholova, Eva; Novak, Petr; Wanner, Gerhard; Macas, Jiri

    2012-01-01

    The centromere is a functional chromosome domain that is essential for faithful chromosome segregation during cell division and that can be reliably identified by the presence of the centromere-specific histone H3 variant CenH3. In monocentric chromosomes, the centromere is characterized by a single CenH3-containing region within a morphologically distinct primary constriction. This region usually spans up to a few Mbp composed mainly of centromere-specific satellite DNA common to all chromos...

  11. Biophysical Characterization of the Centromere-specific Nucleosome from Budding Yeast*

    OpenAIRE

    Kingston, Isabel J.; Yung, Jasmine S. Y.; Singleton, Martin R

    2010-01-01

    The centromeric DNA of all eukaryotes is assembled upon a specialized nucleosome containing a histone H3 variant known as CenH3. Despite the importance and conserved nature of this protein, the characteristics of the centromeric nucleosome are still poorly understood. In particular, the stoichiometry and DNA-binding properties of the CenH3 nucleosome have been the subject of some debate. We have characterized the budding yeast centromeric nucleosome by biochemical and biophysical methods and ...

  12. Inbreeding drives maize centromere evolution.

    Science.gov (United States)

    Schneider, Kevin L; Xie, Zidian; Wolfgruber, Thomas K; Presting, Gernot G

    2016-02-23

    Functional centromeres, the chromosomal sites of spindle attachment during cell division, are marked epigenetically by the centromere-specific histone H3 variant cenH3 and typically contain long stretches of centromere-specific tandem DNA repeats (∼1.8 Mb in maize). In 23 inbreds of domesticated maize chosen to represent the genetic diversity of maize germplasm, partial or nearly complete loss of the tandem DNA repeat CentC precedes 57 independent cenH3 relocation events that result in neocentromere formation. Chromosomal regions with newly acquired cenH3 are colonized by the centromere-specific retrotransposon CR2 at a rate that would result in centromere-sized CR2 clusters in 20,000-95,000 y. Three lines of evidence indicate that CentC loss is linked to inbreeding, including (i) CEN10 of temperate lineages, presumed to have experienced a genetic bottleneck, contain less CentC than their tropical relatives; (ii) strong selection for centromere-linked genes in domesticated maize reduced diversity at seven of the ten maize centromeres to only one or two postdomestication haplotypes; and (iii) the centromere with the largest number of haplotypes in domesticated maize (CEN7) has the highest CentC levels in nearly all domesticated lines. Rare recombinations introduced one (CEN2) or more (CEN5) alternate CEN haplotypes while retaining a single haplotype at domestication loci linked to these centromeres. Taken together, this evidence strongly suggests that inbreeding, favored by postdomestication selection for centromere-linked genes affecting key domestication or agricultural traits, drives replacement of the tandem centromere repeats in maize and other crop plants. Similar forces may act during speciation in natural systems. PMID:26858403

  13. Structure, dynamics, and evolution of centromeric nucleosomes

    OpenAIRE

    Dalal, Yamini; Furuyama, Takehito; Vermaak, Danielle; Henikoff, Steven

    2007-01-01

    Centromeres are defining features of eukaryotic chromosomes, providing sites of attachment for segregation during mitosis and meiosis. The fundamental unit of centromere structure is the centromeric nucleosome, which differs from the conventional nucleosome by the presence of a centromere-specific histone variant (CenH3) in place of canonical H3. We have shown that the CenH3 nucleosome core found in interphase Drosophila cells is a heterotypic tetramer, a “hemisome” consisting of one molecule...

  14. Centromeric nucleosomes induce positive supercoils

    OpenAIRE

    Furuyama, Takehito; Henikoff, Steven

    2009-01-01

    Centromeres of higher eukaryotes are epigenetically maintained, however, the mechanism that underlies centromere inheritance is unknown. Centromere identity and inheritance require the assembly of nucleosomes containing the CenH3 histone variant in place of canonical H3. Whereas H3 nucleosomes wrap DNA in a left-handed manner and induce negative supercoils, we show here that CenH3 nucleosomes that are reconstituted from Drosophila histones induce positive supercoils. Furthermore, we show that...

  15. The Overexpression of a Saccharomyces cerevisiae Centromeric Histone H3 Variant Mutant Protein Leads to a Defect in Kinetochore Biorientation

    OpenAIRE

    Collins, Kimberly A.; Camahort, Raymond; Seidel, Chris; Gerton, Jennifer L.; Biggins, Sue

    2007-01-01

    Chromosomes segregate using their kinetochores, the specialized protein structures that are assembled on centromeric DNA and mediate attachment to the mitotic spindle. Because centromeric sequences are not conserved, centromere identity is propagated by an epigenetic mechanism. All eukaryotes contain an essential histone H3 variant (CenH3) that localizes exclusively to centromeres. Because CenH3 is required for kinetochore assembly and is likely to be the epigenetic mark that specifies centro...

  16. Phosphorylation of centromeric histone H3 variant regulates chromosome segregation in Saccharomyces cerevisiae

    OpenAIRE

    Boeckmann, Lars; Takahashi, Yoshimitsu; Au, Wei-Chun; Prashant K. Mishra; Choy, John S.; Dawson, Anthony R.; Szeto, May Y.; Waybright, Timothy J.; Heger, Christopher; McAndrew, Christopher; Goldsmith, Paul K.; VEENSTRA, TIMOTHY D.; Baker, Richard E.; Basrai, Munira A.

    2013-01-01

    The centromeric histone H3 variant (CenH3) is essential for chromosome segregation in eukaryotes. We identify posttranslational modifications of Saccharomyces cerevisiae CenH3, Cse4. Functional characterization of cse4 phosphorylation mutants shows growth and chromosome segregation defects when combined with kinetochore mutants okp1 and ame1. Using a phosphoserine-specific antibody, we show that the association of phosphorylated Cse4 with centromeres increases in response to defective microtu...

  17. DNA deletion as a mechanism for developmentally programmed centromere loss

    OpenAIRE

    Lhuillier-Akakpo, Maoussi; Guérin, Frédéric; Frapporti, Andrea; Duharcourt, Sandra

    2015-01-01

    A hallmark of active centromeres is the presence of the histone H3 variant CenH3 in the centromeric chromatin, which ensures faithful genome distribution at each cell division. A functional centromere can be inactivated, but the molecular mechanisms underlying the process of centromere inactivation remain largely unknown. Here, we describe the loss of CenH3 protein as part of a developmental program leading to the formation of the somatic nucleus in the eukaryote Paramecium. We identify two p...

  18. Test what you eat. Monitoring of radioactivity in the food chain

    International Nuclear Information System (INIS)

    Since 2013, the total beta activity in animal feed products being exported to Belarus shall be lower than 600 Becquerel per kilogram. The Belgian Nuclear Research Center SCK-CEN carries out these checks on behalf of the professional association of compound feed manufacturers in Belgium. The article discusses work conducted by SCK-CEN relating to the monitoring of radioactivity in the food chain.

  19. Short DNA Fragments without Sequence Similarity Are Initiation Sites for Replication in the Chromosome of the Yeast Yarrowia lipolytica

    OpenAIRE

    Vernis, Laurence; Chasles, Marion; Pasero, Philippe; Lepingle, Andrée; Gaillardin, Claude; Fournier, Philippe

    1999-01-01

    We have previously shown that both a centromere (CEN) and a replication origin are necessary for plasmid maintenance in the yeast Yarrowia lipolytica (Vernis et al., 1997). Because of this requirement, only a small number of centromere-proximal replication origins have been isolated from Yarrowia. We used a CEN-based plasmid to obtain noncentromeric origins, and several new fragments, some unique and some repetitive sequences, were isolated. Some of them were analyzed by two-dimensional gel e...

  20. SEI 1: Design, Installation, and Performance of a Delay Tolerant Seismic Network in Mexico

    OpenAIRE

    Allen Husker; Igor Stubailo; Martin Lukac; Alma Quezada; Steven Skinner; Irving Flores; Paul Davis; Richard Guy; Deborah Estrin

    2006-01-01

    The deployment phase of CENS equipment began this year within MASE (Middle America Subduction Experiment), a collaboration involving UCLA, the California Institute of Technology (CIT), and the Universidad Nacional Autnoma de Mexico (UNAM). The CENS 50 radio-linked sites joined the 50 stand-alone sites of CIT in Mexico. Scientifically, we will be mapping the subducted slab beneath Mexico, examining the propagation of seismic waves through Mexico, and searching for slow earthquakes. The arra...

  1. EXPLORING HALO SUBSTRUCTURE WITH GIANT STARS: SUBSTRUCTURE IN THE LOCAL HALO AS SEEN IN THE GRID GIANT STAR SURVEY INCLUDING EXTENDED TIDAL DEBRIS FROM ωCENTAURI

    International Nuclear Information System (INIS)

    We present the latitude-normalized radial velocity (vb ) distribution of 3318 subsolar metallicity, V ∼b sequences. One sequence in the fourth Galactic quadrant lies within the l-vb space expected to contain tidal debris from the 'star cluster' ωCentauri. Not only does ωCen lie precisely in this l-vb sequence, but the positions and vb of member stars match those of N-body simulations of tidally disrupting dwarf galaxies on orbits ending with ωCen's current position and space motion. But the ultimate proof that we have very likely found extended parts of the ωCen tidal stream comes from echelle spectroscopy of a subsample of the stars that reveals a very particular chemical abundance signature known to occur only in ωCen. The newly discovered ωCen debris accounts for almost all fourth Galactic quadrant retrograde stars in the southern GGSS, which suggests ωCen is a dominant contributor of retrograde giant stars in the inner Galaxy.

  2. Isolation and characterization of a novel endoglucanase from a Bursaphelenchus xylophilus metagenomic library.

    Directory of Open Access Journals (Sweden)

    Lin Zhang

    Full Text Available A novel gene (designated as cen219 encoding endoglucanase was isolated from a Bursaphelenchus xylophilus metagenomic library by functional screening. Sequence analysis revealed that cen219 encoded a protein of 367 amino acids. SDS-PAGE analysis of purified endoglucanase suggested that Cen219 was a monomeric enzyme with a molecular mass of 40 kDa. The optimum temperature and pH for endoglucanase activity of Cen219 was separately 50 °C and 6.0. It was stable from 30 to 50 °C, and from pH 4.0 to 7.0. The activity was significantly enhanced by Mn(2+ and dramatically reduced by detergent SDS and metals Fe(3+, Cu(2+ or Hg(2+. The enzyme hydrolyzed a wide range of β-1, 3-, and β-1, 4-linked polysaccharides, with varying activities. Activities towards microcrystalline cellulose and filter paper were relatively high, while the highest activity was towards oat gum. The Km and Vmax of Cen219 towards CMC was 17.37 mg/ml and 333.33 U/mg, respectively. The findings have an insight into understanding the molecular basis of host-parasite interactions in B. xylophilus species. The properties also make Cen219 an interesting enzyme for biotechnological application.

  3. Possibilidades de inserção da pesquisa contábil brasileira no cenário internacional: uma proposta de avaliação dos periódicos científicos de contabilidade e auditoria publicados em língua inglesa e disponibilizados no portal de periódicos da CAPES Possibilites for inserting brazilian accounting research in the international scenario: a proposal for the assessment of scientific accountancy and auditing journals published in english and available in the CAPES journal portal

    OpenAIRE

    Fernando Dal-Ri Murcia; José Alonso Borba

    2008-01-01

    O objetivo deste trabalho é propor uma metodologia de avaliação para os periódicos científicos de contabilidade e auditoria publicados em língua inglesa e disponibilizados no Portal de Periódicos da CAPES. A justificativa para a realização deste estudo baseia-se em duas premissas: a necessidade de uma inserção internacional da pesquisa contábil brasileira e a inexistência de uma avaliação pela CAPES dos periódicos estrangeiros. As revistas acadêmicas que continham as palavras accounting ou au...

  4. Possibilidades de inserção da pesquisa contábil brasileira no cenário internacional: uma proposta de avaliação dos periódicos científicos de contabilidade e auditoria publicados em língua inglesa e disponibilizados no portal de periódicos da CAPES Possibilites for inserting brazilian accounting research in the international scenario: a proposal for the assessment of scientific accountancy and auditing journals published in english and available in the CAPES journal portal

    Directory of Open Access Journals (Sweden)

    Fernando Dal-Ri Murcia

    2008-04-01

    Full Text Available O objetivo deste trabalho é propor uma metodologia de avaliação para os periódicos científicos de contabilidade e auditoria publicados em língua inglesa e disponibilizados no Portal de Periódicos da CAPES. A justificativa para a realização deste estudo baseia-se em duas premissas: a necessidade de uma inserção internacional da pesquisa contábil brasileira e a inexistência de uma avaliação pela CAPES dos periódicos estrangeiros. As revistas acadêmicas que continham as palavras accounting ou auditing em seus títulos foram selecionadas. Após a eliminação dos periódicos não-acadêmicos, 40 journals foram analisados. A coleta dos dados foi realizada principalmente nos sites eletrônicos de cada periódico e envolveu a análise dos seguintes aspectos: corpo editorial (editorial board e sua internacionalização, instrução para os autores (guide for authors, enfoque (aim/focus, revisão às cegas (blind review, indexação ao SCOPUS, indexação ao Institute of Scientifc Information, grau de impacto de acordo com o Journal Citation Report e índice de temporalidade. Para se coletarem as informações referentes à taxa de corte (cut rate, foram enviados e-mails aos editores responsáveis (chief editor de cada periódico. Com base nos critérios propostos, 8 revistas foram classificadas com o conceito "A", 20 com "B" e 12 com "C", sendo que o Journal of Accounting Research (JAR, o Journal of Accounting and Economics (JAE, e o The Accounting Review (TAR foram os três periódicos com maior pontuação. Esta pesquisa visa contribuir para o desenvolvimento da pesquisa contábil brasileira à medida que propõe uma metodologia alternativa para avaliação de periódicos científicos.This paper aims to propose a methodology to evaluate accounting and auditing journals published in English and available in the CAPES Journal Portal. The research is justified by two basic premises: Brazilian accounting research needs international penetration and foreign journals have not been evaluated by CAPES yet. This study sample is composed of the journals that had the words accounting and auditing in their title. Non-academic journals were not analyzed and the final sample consisted of 40 journals. Data were collected from the journals websites and involved an analysis of the following aspects: editorial board, instructions for authors, aim/focus, blind review, indexation in SCOPUS and Institute for Scientific Information, Journal of Citation Report impact factor and temporality ratio. To collect information on the journals cut rate, e-mails were sent to the chief editors. Based on the proposed methodology, 8 journals received an "A" concept, 20 "B" and 12 "C". The three best evaluated journals according to this study are: Journal of Accounting and Economics (JAE, Accounting Organization and Society (AOS and The Accounting Review (TAR. This paper aims to contribute to Brazilian literature by proposing an alternative methodology for scientific journal evaluation.

  5. A utilização do patrimônio como cenário para o consumo e a fruição turística: estratégias de produção de imagem do bairro Praia Grande-MA Use of architectural heritage as a scenry for tourist consumption: strategies for image production of Praia Grande-MA neighborhood Utilización del patrimonio como escenario para el consumo y el usufructo turístico: estrategias de producción de imagen en el barrio Praia Grande-MA

    Directory of Open Access Journals (Sweden)

    Edileuza Lopes Sette Silva

    2010-06-01

    Full Text Available ResumoEste trabalho teve como objetivo analisar as implicações na dinâmica urbana do bairro Praia Grande, localizado no Centro Histórico da Cidade de São Luís-MA, Brasil, relacionadas à implementação do Programa de Preservação e Revitalização Urbana, implementado no fim da década de 1970. Utilizou-se de pesquisa documental e observação participante para apreender as transformações ocasionadas nesse espaço urbano. Pode-se observar que com a refuncionalização turística o bairro central sofreu diversas alterações físicas e simbólicas. Outro resultado encontrado é a perspectiva contraditória assumida pelo patrimônio cultural na medida em que um conjunto de elementos foi selecionado para (reconstruir o sentido de identidade e memória da cidade e ao mesmo tempo contribuiu para a despersonalização quando tornou-se um mero produto comercializado para o turismo. Abstract This study aimed to examine the implications on the urban dynamics of the district of “Praia Grande”, located in the historic city of Sao Luis, Brazil, related to the implementation of the Preservation and Urban Revitalization Program in the late 1970s. Documental research and participant observation to capture the changes brought about in its urban space were used. It is possible to see how the tourist refunctionalization impacted the central district physically and symbolically. Another finding is the approach taken by the contradictory cultural heritage in that a number of factors was selected to (rebuild a sense of identity and memory of the city and, at the same time, that it contributed to the depersonalization when it became a mere product marketed for tourism. Resumen Este trabajo tuvo como objetivo analizar las implicaciones en la dinámica urbana del barrio Praia Grande, localizado en el Centro Histórico de la Ciudad de São Luís-MA, Brasil, relacionados con la implementación del Programa de Preservación y Revitalización Urbana en fines de la década de 1970. Fue utilizada investigación documental y observación participante para captar las transformaciones provocadas en el espacio urbano. Es posible observar que el cambio de funciones en dirección a la actividad turística llevó muchas alteraciones físicas y simbólicas al barrio central. Otro resultado encontrado es del punto de vista de la perspectiva contradictoria asumida por el patrimonio cultural con la selección de un conjunto de elementos para (reconstruir el sentido de identidad y memoria de la ciudad. Esto contribuyó para la despersonalización y transformación del barrio en simples producto comercializado para el turismo.

  6. A utilização do patrimônio como cenário para o consumo e a fruição turística: estratégias de produção de imagem do bairro Praia Grande-MA
    Use of architectural heritage as a scenry for tourist consumption: strategies for image production of Praia Grande-MA neighborhood
    Utilización del patrimonio como escenario para el consumo y el usufructo turístico: estrategias de producción de imagen en el barrio Praia Grande-MA

    OpenAIRE

    Edileuza Lopes Sette Silva; Georgia Patrícia da Silva

    2010-01-01

    ResumoEste trabalho teve como objetivo analisar as implicações na dinâmica urbana do bairro Praia Grande, localizado no Centro Histórico da Cidade de São Luís-MA, Brasil, relacionadas à implementação do Programa de Preservação e Revitalização Urbana, implementado no fim da década de 1970. Utilizou-se de pesquisa documental e observação participante para apreender as transformações ocasionadas nesse espaço urbano. Pode-se observar que com a refuncionalização turística o bairro central sofreu d...

  7. Insular dysfunction within the salience network is associated with severity of symptoms and aberrant inter-network connectivity in major depressive disorder

    Directory of Open Access Journals (Sweden)

    Andrei Manoliu

    2014-01-01

    Full Text Available Major depressive disorder (MDD is characterized by altered intrinsic functional connectivity within (intra-iFC intrinsic connectivity networks (ICNs, such as the Default Mode- (DMN, Salience- (SN and Central Executive Network (CEN. It has been proposed that aberrant switching between DMN-mediated self-referential and CEN-mediated goal-directed cognitive processes might contribute to MDD, possibly explaining patients’ difficulties to disengage the processing of self-focused, often negatively biased thoughts. Recently, it has been shown that the right anterior insula (rAI within the SN is modulating DMN/CEN interactions. Since structural and functional alterations within the AI have been frequently reported in MDD, we hypothesized that aberrant intra-iFC in the SN´s rAI is associated with both aberrant iFC between DMN and CEN (inter-iFC and severity of symptoms in MDD. Twenty-five patients with MDD and 25 healthy controls were assessed using resting-state fMRI (rs-fMRI and psychometric examination. High-model-order independent component analysis (ICA of rs-fMRI data was performed to identify ICNs including DMN, SN, and CEN. Intra-iFC within and inter-iFC between distinct subsystems of the DMN, SN and CEN were calculated, compared between groups and correlated with the severity of symptoms. Patients with MDD showed (1 decreased intra-iFC within the SN´s rAI, (2 decreased inter-iFC between the DMN and CEN and (3 increased inter-iFC between the SN and DMN. Moreover, decreased intra-iFC in the SN´s rAI was associated with severity of symptoms and aberrant DMN/CEN interactions, with the latter losing significance after correction for multiple comparisons. Our results provide evidence for a relationship between aberrant intra-iFC in the salience network’s rAI, aberrant DMN/CEN interactions and severity of symptoms, suggesting a link between aberrant salience mapping, abnormal coordination of DMN/CEN based cognitive processes and psychopathology

  8. CENÁRIOS PROSPECTIVOS PARA TELEFONIA CELULAR NO BRASIL: 2008-2016

    Directory of Open Access Journals (Sweden)

    Leonardo Pereira Cassol

    2008-12-01

    Full Text Available O objetivo deste estudo consiste na construção de cenários prospectivos para a indústria de telefonia celular no Brasil noperíodo de 2008 a 2016. O método empregado apoiou-se em estudo de caso e no emprego da metodologia de construção de cenários da área de Estudos do Futuro, intitulada Lógica Intuitiva. Os dados primários foram coletados por meio de entrevistas individuais e não-estruturadas junto a especialistas. Dados secundários foram coletados junto às operadoras de telefonia celular e nos órgãos oficiais IBGE, Anatel e Ministério das Comunicações. Destacaram-se, dentre as tendências identificadas, as seguintes: crescimento do setor acima doPIB; ampliação da cobertura geográfica; penetração da tecnologia3G; forte ampliação da quantidade e da qualidade dos serviços. As principais incertezas verificadas foram estas: crescimento sustentável em patamares elevados; política governamental perante a Anatel, serviços e tecnologias que farão sucesso e entrada de novos players. Foram elaborados quatro cenários prospectivos: o cenário “Mais do mesmo” representa a ação da inércia (continuidade; no cenário “Na crista da onda”, mudanças estruturais favorecem o setor; no cenário “Sem serviço”, há um forte retrocesso regulatório e econômico; no cenário “Rouba monte”, o setor é prejudicado peloagravamento dos atuais problemas do País.

  9. Single-epitope recognition imaging of native chromatin

    Directory of Open Access Journals (Sweden)

    Wang Hongda

    2008-12-01

    Full Text Available Abstract Background Direct visualization of chromatin has the potential to provide important insights into epigenetic processes. In particular, atomic force microscopy (AFM can visualize single nucleosomes under physiological ionic conditions. However, AFM has mostly been applied to chromatin that has been reconstituted in vitro, and its potential as a tool for the dissection of native nucleosomes has not been explored. Recently we applied AFM to native Drosophila chromatin containing the centromere-specific histone 3 (CenH3, showing that it is greatly enriched in smaller particles. Taken together with biochemical analyses of CenH3 nucleosomes, we propose that centromeric nucleosomes are hemisomes, with one turn of DNA wrapped around a particle consisting of one molecule each of centromere-specific CenH3, H4, H2A and H2B. Results Here we apply a recognition mode of AFM imaging to directly identify CenH3 within histone core particles released from native centromeric chromatin. More than 90% of these particles were found to be tetrameric in height. The specificity of recognition was confirmed by blocking with a CenH3 peptide, and the strength of the interaction was quantified by force measurements. These results imply that the particles imaged by AFM are indeed mature CenH3-containing hemisomes. Conclusion Efficient and highly specific recognition of CenH3 in histone core particles isolated from native centromeric chromatin demonstrates that tetramers are the predominant form of centromeric nucleosomes in mature tetramers. Our findings provide proof of principle that this approach can yield insights into chromatin biology using direct and rapid detection of native nucleosomes in physiological salt concentrations.

  10. Aberrant structural and functional connectivity in the salience network and central executive network circuit in schizophrenia.

    Science.gov (United States)

    Chen, Quan; Chen, Xingui; He, Xiaoxuan; Wang, Lu; Wang, Kai; Qiu, Bensheng

    2016-08-01

    Consistent structural and functional abnormities have been detected in the salience network (SN) and the central-executive network (CEN) in schizophrenia. SN, known for its critical role in switching CEN and default-mode network (DMN) during cognitively demanding tasks, is proved to show aberrant regulation on the interaction between DMN and CEN in schizophrenia. However, it has not been elucidated whether there is a direct alteration of structural and functional connectivity between SN and CEN. 22 schizophrenia patients and 21 healthy controls were recruited for functional magnetic resonance imaging (fMRI) and diffusion tensor imaging (DTI) in present study. The results show that schizophrenia patients had lower fractional anisotropy (FA) in right inferior long fasciculus (ILF), left inferior fronto-occipital fasciculus (IFOF) and callosal body than healthy controls. Significantly reduced functional connectivity was also found between right fronto-insular cortex (rFIC) and right posterior parietal cortex (rPPC). FA in right ILF was positively correlated with the functional connectivity of rFIC-rPPC. Therefore, we proposed a disruption of structural and functional connectivity and a positive anatomo-functional relationship in SN-CEN circuit, which might account for a core feature of schizophrenia. PMID:27233217

  11. Aproveitamento energético dos resíduos sólidos urbanos do município de Nova Iguaçu-RJ - Uma visão sobre a nova política nacional de resíduos sólidos

    Directory of Open Access Journals (Sweden)

    Diego Macedo Veneu

    2015-09-01

    Full Text Available O presente estudo apresenta dois diferentes cenários de aproveitamento energético dos Resíduos Sólidos Urbanos (RSU, para o Município de Nova Iguaçu. O “Cenário I” contempla o ganho energético, proveniente do metano gerado do aterramento de 100% dos RSU, gerado na localidade. Já o “Cenário II” estima o ganho energético com a reciclagem de materiais como papel/papelão, plástico, metal e vidro, que geralmente, são depositados no aterro, e do metano gerado proveniente da fração orgânica do RSU, deste município. A quantidade de energia elétrica gerada do metano proveniente do aterro, mais a energia elétrica conservada levando em conta os índices de Morris proveniente da reciclagem, ambos do Cenário II corresponderam a um ganho energético de 5.633 MWh dia-1, aproximadamente 64%, maior que a quantidade de energia elétrica gerada, somente do metano proveniente do aterro no Cenário I, que corresponde a 2.034 MWh dia-1.

  12. How dusty is alpha Centauri? Excess or non-excess over the infrared photospheres of main-sequence stars

    CERN Document Server

    Wiegert, J; Thébault, P; Olofsson, G; Mora, A; Bryden, G; Marshall, J P; Eiroa, C; Montesinos, B; Ardila, D; Augereau, J C; Aran, A Bayo; Danchi, W C; del Burgo, C; Ertel, S; Fridlund, M C W; Hajigholi, M; Krivov, A V; Pilbratt, G L; Roberge, A; White, G J

    2014-01-01

    [Abridged] Debris discs around main-sequence stars indicate the presence of larger rocky bodies. The components of the nearby binary aCentauri have higher than solar metallicities, which is thought to promote giant planet formation. We aim to determine the level of emission from debris in the aCen system. Having already detected the temperature minimum, Tmin, of aCenA, we here attempt to do so also for the companion aCenB. Using the aCen stars as templates, we study possible effects Tmin may have on the detectability of unresolved dust discs around other stars. We use Herschel and APEX photometry to determine the stellar spectral energy distributions. In addition, we use APEX for spectral line mapping to study the complex background around aCen seen in the photometric images. Models of stellar atmospheres and discs are used to estimate the amount of debris around these stars. For solar-type stars, a fractional dust luminosity fd 2e-7 could account for SEDs that do not exhibit the Tmin-effect. Slight excesses ...

  13. A Cohesin-Based Partitioning Mechanism Revealed upon Transcriptional Inactivation of Centromere

    Science.gov (United States)

    Tsabar, Michael; Haase, Julian; Harrison, Benjamin; Snider, Chloe E.; Kaminsky, Lila; Hine, Rebecca M.; Haber, James E.; Bloom, Kerry

    2016-01-01

    Transcriptional inactivation of the budding yeast centromere has been a widely used tool in studies of chromosome segregation and aneuploidy. In haploid cells when an essential chromosome contains a single conditionally inactivated centromere (GAL-CEN), cell growth rate is slowed and segregation fidelity is reduced; but colony formation is nearly 100%. Pedigree analysis revealed that only 30% of the time both mother and daughter cell inherit the GAL-CEN chromosome. The reduced segregation capacity of the GAL-CEN chromosome is further compromised upon reduction of pericentric cohesin (mcm21∆), as reflected in a further diminishment of the Mif2 kinetochore protein at GAL-CEN. By redistributing cohesin from the nucleolus to the pericentromere (by deleting SIR2), there is increased presence of the kinetochore protein Mif2 at GAL-CEN and restoration of cell viability. These studies identify the ability of cohesin to promote chromosome segregation via kinetochore assembly, in a situation where the centromere has been severely compromised. PMID:27128635

  14. Standardization of Alternative Fuels. Phase 2

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2004-08-15

    March 2003 the Executive Committee of the International Energy Agency's Implementing Agreement on Advanced Motor fuels (IEA/AMF) decided to continue annex XXVII 'Standardization of alternative fuels' with a second phase. The purpose of the second phase was to go further in the contacts with the International Organization for Standardization (ISO) as well as the European Committee for Standardization (CEN) and their technical committees, to better understand their needs and to investigate how IEA/AMF could contribute to their work. It was also scheduled to put forward proposals on how IEA/AMF could cooperate with CEN and ISO and their technical committees (TC: s), primarily ISO/TC 28 'Petroleum Products and Lubricants' and CEN/TC 19 'Petroleum Products, Lubricants and Related Products'. The main part of the work in IEA/AMF annex XXVII phase two has focused on personal contacts within CEN/TC 19 and ISO/TC 28, but also on data and information collection from websites and written information. Together with the analysis of this information, the internal organization of a cooperation between IEA/AMF and ISO/TC 28 and of a cooperation between IEA/AMF and CEN/TC 19 have also been discussed and analysed.

  15. A Cohesin-Based Partitioning Mechanism Revealed upon Transcriptional Inactivation of Centromere.

    Science.gov (United States)

    Tsabar, Michael; Haase, Julian; Harrison, Benjamin; Snider, Chloe E; Eldridge, Brittany; Kaminsky, Lila; Hine, Rebecca M; Haber, James E; Bloom, Kerry

    2016-04-01

    Transcriptional inactivation of the budding yeast centromere has been a widely used tool in studies of chromosome segregation and aneuploidy. In haploid cells when an essential chromosome contains a single conditionally inactivated centromere (GAL-CEN), cell growth rate is slowed and segregation fidelity is reduced; but colony formation is nearly 100%. Pedigree analysis revealed that only 30% of the time both mother and daughter cell inherit the GAL-CEN chromosome. The reduced segregation capacity of the GAL-CEN chromosome is further compromised upon reduction of pericentric cohesin (mcm21∆), as reflected in a further diminishment of the Mif2 kinetochore protein at GAL-CEN. By redistributing cohesin from the nucleolus to the pericentromere (by deleting SIR2), there is increased presence of the kinetochore protein Mif2 at GAL-CEN and restoration of cell viability. These studies identify the ability of cohesin to promote chromosome segregation via kinetochore assembly, in a situation where the centromere has been severely compromised. PMID:27128635

  16. The Dynamo Clinical Trial

    Science.gov (United States)

    Ayres, Thomas R.

    2016-04-01

    The Dynamo Clinical Trial evaluates long-term stellar magnetic health through periodic X-ray examinations (by the Chandra Observatory). So far, there are only three subjects enrolled in the DTC: Alpha Centauri A (a solar-like G dwarf), Alpha Cen B (an early K dwarf, more active than the Sun), and Alpha Canis Majoris A (Procyon, a mid-F subgiant similar in activity to the Sun). Of these, Procyon is a new candidate, so it is too early to judge how it will fare. Of the other two, Alpha Cen B has responded well, with a steady magnetic heartbeat of about 8 years duration. The sickest of the bunch, Alpha Cen A, was in magnetic cardiac arrest during 2005-2010, but has begun responding to treatment in recent years, and seems to be successfully cycling again, perhaps achieving a new peak of magnetic health in the 2016 time frame. If this is the case, it has been 20 years since A's last healthful peak, significantly longer than the middle-aged Sun's 11-year magnetic heartbeat, but perhaps in line with Alpha Cen A's more senescent state (in terms of "relative evolutionary age," apparently an important driver of activity). (By the way, don't miss the exciting movie of the Alpha Cen stars' 20-year X-ray dance.)

  17. The spectral studies on the effect of Glu 101 to the metal binding characteristic of Euplotes octocarinatus centrin

    Science.gov (United States)

    Guoting, Li; Zhijun, Wang; Yaqin, Zhao; Liexiang, Ren; Aihua, Liang; Binsheng, Yang

    2007-08-01

    Glu is highly conserved as the first amino acid of E-helix of the EF-hand protein. In this paper, Glu 101, the first amino acid of E-helix of the third EF-hand motif in Euplotes octocarinatus centrin (EoCen) was mutated to be Lys by the method of site direct mutation. Tb 3+ and TNS were used as fluorescence probes in the study of the effect of this mutation to the metal binding characteristic of EoCen by fluorescence spectra. Results indicate that compared with EoCen, the mutation protein (E101K) displays a different Tb 3+ binding characteristic and an increased hydrophobic exposure surface. Polyacrylamide gels electrophoresis indicated that the electrophoretic mobilities of EoCen and E101K are distinctly different. It can be deduced that the conformation of EoCen has been altered by this mutation. The general conditional binding constant of Tb 3+ to the three loops of EF-hand sites I-III in E101K was calculated to be (5.64 ± 0.57) × 10 5 M -1 according to the modified equation of the single binding process.

  18. Holocentromeres are dispersed point centromeres localized at transcription factor hotspots.

    Science.gov (United States)

    Steiner, Florian A; Henikoff, Steven

    2014-01-01

    Centromeres vary greatly in size and sequence composition, ranging from 'point' centromeres with a single cenH3-containing nucleosome to 'regional' centromeres embedded in tandemly repeated sequences to holocentromeres that extend along the length of entire chromosomes. Point centromeres are defined by sequence, whereas regional and holocentromeres are epigenetically defined by the location of cenH3-containing nucleosomes. In this study, we show that Caenorhabditis elegans holocentromeres are organized as dispersed but discretely localized point centromeres, each forming a single cenH3-containing nucleosome. These centromeric sites co-localize with kinetochore components, and their occupancy is dependent on the cenH3 loading machinery. These sites coincide with non-specific binding sites for multiple transcription factors ('HOT' sites), which become occupied when cenH3 is lost. Our results show that the point centromere is the basic unit of holocentric organization in support of the classical polycentric model for holocentromeres, and provide a mechanistic basis for understanding how centromeric chromatin might be maintained. DOI: http://dx.doi.org/10.7554/eLife.02025.001. PMID:24714495

  19. Decision strategy research: system analysis

    Energy Technology Data Exchange (ETDEWEB)

    Carle, B

    2000-07-01

    The objective of SCK-CEN's R and D programme on decision strategies is (1) to develop theories, methods and software tools which help decision makers shape, analyse and understand their decisions; (2) to study group processes in decision making; (3) to apply theories, methods and tools in a context related to nuclear emergency preparedness and more generally to support in a context dealing with ionising radiation; (4) to increase SCK-CEN's knowledge on general emergency preparedness and to introduce SCK-CEN staff to computer supported decision techniques. Ongoing R and D has two components: (1) the study of the use of information and knowledge transfer in group decision processes, and more specific studying important factors when computers are used as information source and communication tool; and (2) the study of preference modelling individually and during group decision processes. Principal achievements in 1999 are described.

  20. The Habitability of Proxima Centauri b: II: Environmental States and Observational Discriminants

    CERN Document Server

    Meadows, Victoria S; Schwieterman, Edward W; Lustig-Yaeger, Jacob; Lincowski, Andrew P; Robinson, Tyler; Domagal-Goldman, Shawn D; Barnes, Rory K; Fleming, David P; Deitrick, Russell; Luger, Rodrigo; Driscoll, Peter E; Quinn, Thomas R; Crisp, David

    2016-01-01

    Proxima Centauri b provides an unprecedented opportunity to understand the evolution and nature of terrestrial planets orbiting M dwarfs. Although Proxima Cen b orbits within its star's habitable zone, multiple plausible evolutionary paths could have generated different environments that may or may not be habitable. Here we use 1D coupled climate-photochemical models to generate self-consistent atmospheres for evolutionary scenarios predicted in our companion paper (Barnes et al., 2016). These include high-O2, high-CO2, and more Earth-like atmospheres, with either oxidizing or reducing compositions. We show that these modeled environments can be habitable or uninhabitable at Proxima Cen b's position in the habitable zone. We use radiative transfer models to generate synthetic spectra and thermal phase curves for these simulated environments, and instrument models to explore our ability to discriminate between possible planetary states. These results are applicable not only to Proxima Cen b, but to other terre...

  1. A Deep X-ray Search for the Putative IMBH in Omega Centauri

    Science.gov (United States)

    Haggard, Daryl; Cool, A.; Heinke, C. O.; Cohn, H. N.; Lugger, P. M.; Van Der Marel, R. P.; Anderson, J.

    2013-04-01

    Omega Centauri, the Milky Way's most massive and enigmatic old stellar cluster, offers a treasure trove of astronomical discovery and controversy, including debate about the existence of an intermediate mass black hole (IMBH) buried in the cluster's core. We report preliminary results of deep 290 ksec) Chandra ACIS-I imaging of Omega Cen, which reveals no X-ray source at the cluster center reported by Anderson and van der Marel (2010), or at any other proposed center for the cluster. We discuss the significance of this new X-ray limit for the possible presence of an IMBH in Omega Cen. We also briefly describe our multiwavelength imaging and spectroscopic campaigns, which probe Omega Cen's binary populations, and the light they shed on the cluster's dynamical history.

  2. How Belgium helped establish a surveillance programme for Argentina's Atucha-2

    International Nuclear Information System (INIS)

    Collaboration between Belgian experts and Argentina on the commissioning of Argentine reactors helped overcome problems caused by delays with construction. Marc Scibetta, deputy manager for nuclear materials science, from the Belgian Nuclear Research Centre (SCK CEN) gave an interview in which he told some facts to Lubomir Mitev of NucNet. The cooperation between SCK CEN an Argentina's Comision Nacional de Energia Atomica (CNEA) started in 2002. The first project was a support for the safety evaluation of the Atucha-1 reactor pressure vessel. When Argentina resumed the construction of Atucha-2 in 2006 - originally, construction started in 1981 but was suspended in 1985 due to financial reasons -, SCK CEN was asked to develop and implement a surveillance programme for the unit.

  3. How Belgium helped establish a surveillance programme for Argentina's Atucha-2

    Energy Technology Data Exchange (ETDEWEB)

    Mitev, Lubomir [NucNet, Brussels (Belgium)

    2015-02-15

    Collaboration between Belgian experts and Argentina on the commissioning of Argentine reactors helped overcome problems caused by delays with construction. Marc Scibetta, deputy manager for nuclear materials science, from the Belgian Nuclear Research Centre (SCK CEN) gave an interview in which he told some facts to Lubomir Mitev of NucNet. The cooperation between SCK CEN an Argentina's Comision Nacional de Energia Atomica (CNEA) started in 2002. The first project was a support for the safety evaluation of the Atucha-1 reactor pressure vessel. When Argentina resumed the construction of Atucha-2 in 2006 - originally, construction started in 1981 but was suspended in 1985 due to financial reasons -, SCK CEN was asked to develop and implement a surveillance programme for the unit.

  4. Decision strategy research: system analysis

    International Nuclear Information System (INIS)

    The objective of SCK-CEN's R and D programme on decision strategies is (1) to develop theories, methods and software tools which help decision makers shape, analyse and understand their decisions; (2) to study group processes in decision making; (3) to apply theories, methods and tools in a context related to nuclear emergency preparedness and more generally to support in a context dealing with ionising radiation; (4) to increase SCK-CEN's knowledge on general emergency preparedness and to introduce SCK-CEN staff to computer supported decision techniques. Ongoing R and D has two components: (1) the study of the use of information and knowledge transfer in group decision processes, and more specific studying important factors when computers are used as information source and communication tool; and (2) the study of preference modelling individually and during group decision processes. Principal achievements in 1999 are described

  5. The holistic architectural approach to integrating the healthcare record in the overall information system.

    Science.gov (United States)

    Ferrara, F M; Sottile, P A; Grimson, W

    1999-01-01

    The integration and evolution of existing systems represents one of the most urgent problems facing those responsible for healthcare information systems so that the needs of the whole organisation are addressed. The management of the healthcare record represents one of the major requirements in the overall process, however it is also necessary to ensure that the healthcare record and other healthcare information is integrated within the context of an overall healthcare information system. The CEN ENV 12967-1 'Healthcare Information Systems Architecture' standard defines a holistic architectural approach where the various, organisational, clinical, administrative and managerial requirements co-exist and cooperate, relying on a common heritage of information and services. This paper reviews the middleware-based approach adopted by CEN ENV 12967-1 and the specialisation necessary for the healthcare record based on CEN ENV 12265 'Electronic Healthcare Record Architecture'. PMID:10725017

  6. Nuclear Research and Society

    International Nuclear Information System (INIS)

    In 1998, SCK-CEN took the initiative to include social sciences and humanities into its research programme. Within this context, four projects were defined, respectively on sustainability and nuclear development; transgenerational ethics related to the disposal of long-lived radioactive waste; legal aspects and liability; emergency communication and risk perception. Two reflection groups were established, on expert culture and ethical choices respectively, in order to deepen insight while creating exchange of disciplinary approaches of the committed SCK-CEN researchers and social scientists. Within the context of SCK-CEN's social sciences and humanities programme, collaborations with various universities were initiated, teams consisting of young doctorate and post-doctorate researchers and university promotors with experience in interaction processes of technology with society were established and steering committees with actors and external experts were set up for each project. The objectives and main achievements in the four projects are summarised

  7. Estudo do comportamento hidráulico da Bacia do Paracuri em Belém (PA utilizando o programa Storm Water Management Model

    Directory of Open Access Journals (Sweden)

    Marco Valério de Albuquerque Vinagre

    2015-09-01

    Full Text Available RESUMOEstuda-se o comportamento hidráulico do sistema de drenagem da Bacia do Paracuri, no município de Belém (PA, com o uso do código computacional livre Storm Water Management Model (SWMM, sendo simulados dois cenários, ambos referentes à ocorrência de uma chuva de 82 mm de precipitação e duração de 6 horas. O primeiro cenário consiste no canal projetado, em perfeitas condições, e nesse caso não ocorrem alagamentos. O segundo cenário simula o mesmo canal com assoreamento de 50 cm, e ocorre inundação. Assim, verifica-se a utilidade do SWMM para simular o comportamento hidráulico dos sistemas de drenagem com dados de precipitações reais, diferentes das chuvas de projeto.

  8. Reflection Group on 'Ethical Choices in Radiation Protection'

    International Nuclear Information System (INIS)

    As part of SCK-CEN's social sciences and humanities programme, a reflection group on 'Ethical Choices in Radiation Protection' was created. The objectives of the reflection group are (1) to brainstorm on critical issues of radiation protection; (2) to create a discussion forum with a variety os SCK-CEN researchers and external experts; (3) to make value judgements and open questions in radiation protection explicit; (4) to create an output for a topical day or workshop by editing a 'cahier' of contributed articles and discussion reports; (5) to complement the output of the SCK-CEN contribution in international ALARA workshops. The programme, achievements and perspectives of the refection group are summarised

  9. In vivo single cell analysis reveals distinct behavior of neural stem and progenitor cells in homeostasis and regeneration in the adult brain

    OpenAIRE

    Barbosa, Joana Santos

    2014-01-01

    Durante o desenvolvimento neural embrionário, as células da Glia Radial (GR) atuam como Células Estaminais Neurais (CENs), dando origem aos neurónios e células da glia que constituem o sistema nervoso central. Curiosamente, a neurogénese e a gliogénese no cérebro adulto também são mediadas por células com características da GR. Apesar do elevado interesse em CENs e da sua possível aplicação em terapias regenerativas, o comportamento celular das CENs adultas, que está na base da neurogénese ad...

  10. Enrichment by supernovae in globular clusters with multiple populations

    CERN Document Server

    Lee, Jae-Woo; Lee, Jina; Lee, Young-Wook

    2009-01-01

    The most massive globular cluster in the Milky Way, omega Centauri, is thought to be the remaining core of a disrupted dwarf galaxy, as expected within the model of hierarchical merging. It contains several stellar populations having different heavy elemental abundances supplied by supernovae -- a process known as metal enrichment. Although M22 appears to be similar to omega Cen, other peculiar globular clusters do not. Therefore omega Cen and M22 are viewed as exceptional, and the presence of chemical inhomogeneities in other clusters is seen as `pollution' from the intermediate-mass asymptotic-giant-branch stars expected in normal globular clusters. Here we report Ca abundances for seven globular clusters and compare them to omega Cen. Calcium and other heavy elements can only be supplied through numerous supernovae explosions of massive stars in these stellar systems, but the gravitational potentials of the present-day clusters cannot preserve most of the ejecta from such explosions. We conclude that these...

  11. Safety culture in a Belgian nuclear research centre from a social science point of view

    International Nuclear Information System (INIS)

    This paper is the result of a reflection within the framework of a Ph.D. research at SCK-CEN (Belgian Nuclear Research Centre) in collaboration with the University of Liege. The starting point of the work was the 'safety culture' model presented in the IAEA report 75-INSAG-4. This model is applied to the working organization of the SCK-CEN, also considering the safety culture as an open concept given its multi dimensionality. The methodology is based on three methods: observations, focus groups and interviews. The fieldwork was limited to two main installations: a research reactor, and a dismantling site. The preliminary findings are based on the data resulting from 4 Focus Groups. The most prominent components of a safety culture and the multiplicity of safety cultures in a large organization such as SCK-CEN will be discussed. (author)

  12. Decision Strategy Research and Policy Support

    Energy Technology Data Exchange (ETDEWEB)

    Hardeman, F

    2002-04-01

    The objective of SCK-CEN's R and D programme on decision strategies and policy support is: (1) to investigate the decision making process, with all its relevant dimensions, in the context of radiation protection or other nuclear issues (with particular emphasis on emergency preparedness); (2) to disseminate knowledge on decision making and nuclear emergencies, including the organisation of training courses, the contribution to manuals or guidelines, the participation in working groups or discussion forums; (3) to assist the authorities and the industry on any topic related to radiation protection and to make expertise and infrastructure available; (4) to participate in and contribute to initiatives related to social sciences and their implementation into SCK-CEN; (5) to co-ordinate efforts of SCK-CEN related to medical applications of ionising radiation. Principal achievements in 2001 are described.

  13. Two-component signal transduction pathways regulating growth and cell cycle progression in a bacterium: a system-level analysis.

    Directory of Open Access Journals (Sweden)

    Jeffrey M Skerker

    2005-10-01

    Full Text Available Two-component signal transduction systems, comprised of histidine kinases and their response regulator substrates, are the predominant means by which bacteria sense and respond to extracellular signals. These systems allow cells to adapt to prevailing conditions by modifying cellular physiology, including initiating programs of gene expression, catalyzing reactions, or modifying protein-protein interactions. These signaling pathways have also been demonstrated to play a role in coordinating bacterial cell cycle progression and development. Here we report a system-level investigation of two-component pathways in the model organism Caulobacter crescentus. First, by a comprehensive deletion analysis we show that at least 39 of the 106 two-component genes are required for cell cycle progression, growth, or morphogenesis. These include nine genes essential for growth or viability of the organism. We then use a systematic biochemical approach, called phosphotransfer profiling, to map the connectivity of histidine kinases and response regulators. Combining these genetic and biochemical approaches, we identify a new, highly conserved essential signaling pathway from the histidine kinase CenK to the response regulator CenR, which plays a critical role in controlling cell envelope biogenesis and structure. Depletion of either cenK or cenR leads to an unusual, severe blebbing of cell envelope material, whereas constitutive activation of the pathway compromises cell envelope integrity, resulting in cell lysis and death. We propose that the CenK-CenR pathway may be a suitable target for new antibiotic development, given previous successes in targeting the bacterial cell wall. Finally, the ability of our in vitro phosphotransfer profiling method to identify signaling pathways that operate in vivo takes advantage of an observation that histidine kinases are endowed with a global kinetic preference for their cognate response regulators. We propose that this

  14. The Extended Halo of Centaurus A: Uncovering Satellites, Streams, and Substructures

    Science.gov (United States)

    Crnojević, D.; Sand, D. J.; Spekkens, K.; Caldwell, N.; Guhathakurta, P.; McLeod, B.; Seth, A.; Simon, J. D.; Strader, J.; Toloba, E.

    2016-05-01

    We present the widest-field resolved stellar map to date of the closest (D∼ 3.8 Mpc) massive elliptical galaxy NGC 5128 (Centaurus A; Cen A), extending out to a projected galactocentric radius of ∼150 kpc. The data set is part of our ongoing Panoramic Imaging Survey of Centaurus and Sculptor (PISCeS) utilizing the Magellan/Megacam imager. We resolve a population of old red giant branch (RGB) stars down to ∼1.5 mag below the tip of the RGB, reaching surface brightness limits as low as {μ }V,0∼ 32 mag arcsec‑2. The resulting spatial stellar density map highlights a plethora of previously unknown streams, shells, and satellites, including the first tidally disrupting dwarf around Cen A (CenA-MM-Dw3), which underline its active accretion history. We report 13 previously unknown dwarf satellite candidates, of which 9 are confirmed to be at the distance of Cen A (the remaining 4 are not resolved into stars), with magnitudes in the range {M}V=-7.2 to ‑13.0, central surface brightness values of {μ }V,0=25.4{--}26.9 mag arcsec‑2, and half-light radii of {r}h=0.22{--}2.92 {{kpc}}. These values are in line with Local Group dwarfs but also lie at the faint/diffuse end of their distribution; interestingly, CenA-MM-Dw3 has similar properties to the recently discovered ultradiffuse galaxies in Virgo and Coma. Most of the new dwarfs are fainter than the previously known Cen A satellites. The newly discovered dwarfs and halo substructures are discussed in light of their stellar populations, and they are compared to those discovered by the PAndAS survey of M31. This paper includes data gathered with the 6.5 m Magellan Telescopes located at Las Campanas Observatory, Chile.

  15. The long-period variables in ω Centauri

    Science.gov (United States)

    Lebzelter, T.; Wood, P. R.

    2016-01-01

    Context. Recent studies have detected multiple populations in globular clusters. The massive globular cluster ω Cen hosts at least three populations of different metallicity. The most metal-rich one is thought to show also an overabundance of He. These differences should become visible in the structure, evolution, and pulsation of its stars. Aims: We aim to study the effects of the different starting compositions of the three populations in ω Cen on the most luminous red giants in this cluster. Methods: The long-periodic variability of evolved stars in ω Cen opens a comparably easy access window to the structure and composition of these objects. We made a detailed search for long-period variables (LPVs) in ω Cen leading to the detection of many new variables and period determinations for a significant number of them. Periods and luminosities were then compared with the most recent pulsation models for these kinds of stars. Results: Some of the LPVs belong to each of the main metallicity sub-groups of ω Cen. Almost all detected variables with periods are fundamental mode pulsators. For the metal-rich group, our comparison with pulsation models favours a high He abundance of Y = 0.4. Conclusions: Our study can be considered an independent piece of evidence supporting a high helium abundance among the metal-rich stars in ω Cen. Tables 3 and 4 are only available at the CDS via anonymous ftp to http://cdsarc.u-strasbg.fr (ftp://130.79.128.5) or via http://cdsarc.u-strasbg.fr/viz-bin/qcat?J/A+A/585/A111

  16. Epigenetic Histone Marks of Extended Meta-Polycentric Centromeres of Lathyrus and Pisum Chromosomes.

    Science.gov (United States)

    Neumann, Pavel; Schubert, Veit; Fuková, Iva; Manning, Jasper E; Houben, Andreas; Macas, Jiří

    2016-01-01

    Species of the legume genera Lathyrus and Pisum possess chromosomes that exhibit a unique structure of their centromeric regions, which is clearly apparent during metaphase by the formation of extended primary constrictions which span up to a third of the length of the chromosome. In addition, these species express two different variants of the CenH3 protein which are co-localized in multiple domains along the poleward surface of the primary constrictions. Here, we show that the constrictions represent a distinct type of chromatin differing from the chromosome arms. In metaphase, histone phosphorylation patterns including H3S10ph, H3S28ph, and H3T3ph were observed along the entire constriction, in a way similar to holocentric chromosomes. On the other hand, distribution of phosphorylated H2AT120 was different from that previously reported from either, holocentric and monocentric chromosomes, occurring at chromatin surrounding but not overlapping CenH3 domains. Since some of these phosphorylations play a role in chromatid cohesion, it can be assumed that they facilitate correct chromosome segregation by ensuring that multiple separate CenH3 domains present on the same chromatid are oriented toward the same pole. The constrictions also displayed distinct patterns of histone methylation marks, being enriched in H3K9me2 and depleted in H3K4me3 and H3K27me2 compared to the chromosome arms. Super-resolution fluorescence microscopy revealed that although both CenH3 protein variants are present in all CenH3 domains detected on metaphase chromosomes, they are only partially co-localized while there are chromatin subdomains which are mostly made of only one CenH3 variant. Taken together, these data revealed specific features of extended primary constrictions of Lathyrus and Pisum and support the idea that they may represent an intermediate stage between monocentric and holocentric chromosomes. PMID:26973677

  17. Epigenetic histone marks of extended meta-polycentric centromeres of Lathyrus and Pisum chromosomes

    Directory of Open Access Journals (Sweden)

    Pavel eNeumann

    2016-03-01

    Full Text Available Species of the legume genera Lathyrus and Pisum possess chromosomes that exhibit a unique structure of their centromeric regions, which is clearly apparent during metaphase by the formation of extended primary constrictions which span up to a third of the length of the chromosome. In addition, these species express two different variants of the CenH3 protein which are co-localized in multiple domains along the poleward surface of the primary constrictions. Here we show that the constrictions represent a distinct type of chromatin differing from the chromosome arms. In metaphase, histone phosphorylation patterns including H3S10ph, H3S28ph and H3T3ph were observed along the entire constriction, in a way similar to holocentric chromosomes. On the other hand, distribution of phosphorylated H2AT120 was different from that previously reported from either, holocentric and monocentric chromosomes, occurring at chromatin surrounding but not overlapping CenH3 domains. Since some of these phosphorylations play a role in chromatid cohesion, it can be assumed that they facilitate correct chromosome segregation by ensuring that multiple separate CenH3 domains present on the same chromatid are oriented towards the same pole. The constrictions also displayed distinct patterns of histone methylation marks, being enriched in H3K9me2 and depleted in H3K4me3 and H3K27me2 compared to the chromosome arms. High resolution fluorescence microscopy revealed that although both CenH3 protein variants are present in all CenH3 domains detected on metaphase chromosomes, they are only partially co-localized while there are chromatin subdomains which are mostly made of only one CenH3 variant. Taken together, these data revealed specific features of extended primary constrictions of Lathyrus and Pisum and support the idea that they may represent an intermediate stage between monocentric and holocentric chromosomes.

  18. Intradermal Immunization of Leishmania donovani Centrin Knock-Out Parasites in Combination with Salivary Protein LJM19 from Sand Fly Vector Induces a Durable Protective Immune Response in Hamsters

    Science.gov (United States)

    Fiuza, Jacqueline Araújo; Dey, Ranadhir; Davenport, Dwann; Abdeladhim, Maha; Meneses, Claudio; Oliveira, Fabiano; Kamhawi, Shaden; Valenzuela, Jesus G.; Gannavaram, Sreenivas; Nakhasi, Hira L.

    2016-01-01

    Background Visceral leishmaniasis (VL) is a neglected tropical disease and is fatal if untreated. There is no vaccine available against leishmaniasis. The majority of patients with cutaneous leishmaniasis (CL) or VL develop a long-term protective immunity after cure from infection, which indicates that development of an effective vaccine against leishmaniasis is possible. Such protection may also be achieved by immunization with live attenuated parasites that do not cause disease. We have previously reported a protective response in mice, hamsters and dogs with Leishmania donovani centrin gene knock-out parasites (LdCen-/-), a live attenuated parasite with a cell division specific centrin1 gene deletion. In this study we have explored the effects of salivary protein LJM19 as an adjuvant and intradermal (ID) route of immunization on the efficacy of LdCen-/- parasites as a vaccine against virulent L. donovani. Methodology/Principal Findings To explore the potential of a combination of LdCen-/- parasites and salivary protein LJM19 as vaccine antigens, LdCen-/- ID immunization followed by ID challenge with virulent L. donovani were performed in hamsters in a 9-month follow up study. We determined parasite burden (serial dilution), antibody production (ELISA) and cytokine expression (qPCR) in these animals. Compared to controls, animals immunized with LdCen-/- + LJM19 induced a strong antibody response, a reduction in spleen and liver parasite burden and a higher expression of pro-inflammatory cytokines after immunization and one month post-challenge. Additionally, a low parasite load in lymph nodes, spleen and liver, and a non-inflamed spleen was observed in immunized animals 9 months after the challenge infection. Conclusions Our results demonstrate that an ID vaccination using LdCen-/-parasites in combination with sand fly salivary protein LJM19 has the capability to confer long lasting protection against visceral leishmaniasis that is comparable to intravenous or

  19. Are Bacteria more dangerous in space?

    International Nuclear Information System (INIS)

    With a mission to Mars and a permanent base on the moon as the ultimate dream, space travel is continually pushing back the frontiers. But long space missions present great challenges for science, for example in the field of microbiology. Together with the European Space Agency (ESA), SCK-CEN is studying the effects of space travel conditions on the behaviour of bacteria. In 2009 the SCK-CEN experts completed four innovative research projects at the cutting edge of microbiology, radiation sciences and space travel.

  20. U-value measurements on ISO round Robin window

    DEFF Research Database (Denmark)

    Duer, Karsten

    1997-01-01

    9 laboratories in 6 european and 2 north american countries have participated in a round robin U-value test of a standard facade window. The objective of the round robin test was to verify that the ISO/CEN proposals for U-value measurement standard is robust.......9 laboratories in 6 european and 2 north american countries have participated in a round robin U-value test of a standard facade window. The objective of the round robin test was to verify that the ISO/CEN proposals for U-value measurement standard is robust....

  1. Test programme for the nuclear fuel of the Jules Horowitz reactor starts

    International Nuclear Information System (INIS)

    In Cadarache in the south of France, an advanced material test reactor is currently being built. The Jules Horowitz reactor is an initiative of the French Atomic Energy Commission ((CEA), supported by the European Commission and research centres in the Czech Republic, Spain, Finland and Belgium, plus a number of large energy companies. On the request of CEA, SCK-CEN started characterising the nuclear fuel for this reactor, in its own BR2. The article describes SCK-CEN's programme on the characterisation of new nuclear fuel elements.

  2. Knowledge Management

    International Nuclear Information System (INIS)

    In 2001, SCK-CEN decided to adopt and implement a practical knowledge management approach. Knowledge management activities were identified within the organisation and a co-ordinated approach to knowledge management was applied. Such an approach requires an efficient reuse of recorded knowledge and an effective transfer of the available knowledge. This approach ensures an added value to our research work and guarantees the long-term preservation of the institutional memory. Principle results and future developments regarding knowledge management at SCK-CEN are summarised

  3. OS MÉTODOS DE PROSPECÇÃO DE CENÁRIOS E SUA APLICAÇAO NAS ORGANIZAÇÕES: UM ESTUDO DE CASO NO PERÍODO 1998-2008.

    OpenAIRE

    Gilberto de Oliveira Moritz; Rogério Nuner; Maurício Fernandes Pereira

    2008-01-01

    O estudo de cenários tem-se mostrado cada vez mais relevante na formulação estratégica das organizações, e ela requer conhecimento na aplicação de metodologias, que sustentem teoricamente a prospecção e escolha dos futuros possíveis, bem como na definição das estratégias a serem adotadas. O artigo apresenta as principais metodologias de prospecção de cenários, desenvolvidas por Godet (1993), General Electric (1979), Schwartz (2003), Porter (1992) e Marcial e Grumbach (2002). Discute as princi...

  4. Conseqüências da violência familiar na saúde da criança e do adolescente: contribuições para a elaboração de propostas de ação Consequences of family violence to the health of children and adolescents: contributions to action proposals

    OpenAIRE

    Michael E. Reichenheim; Maria Helena Hasselmann; Claudia Leite Moraes

    1999-01-01

    No Brasil, o conhecimento sobre a dimensão da violência familiar é ainda escasso. Todavia, existem evidências apontando para um cenário merecedor de enfrentamento imediato. Nesta perspectiva, o presente artigo destaca o campo das investigações sobre o tema, procurando explicitamente fazer uma ponte entre a apropriação do conhecimento gerado e efetivas propostas de ação. O artigo divide-se em cinco partes. Inicialmente, é discutida a importância da violência familiar no cenário de morbi-mortal...

  5. Binaries application around the collinear equilibrium points in the photogravitational CR3BP with bigger primary oblate

    Science.gov (United States)

    Singh, Jagadish; Amuda, Tajudeen Oluwafemi

    2016-05-01

    This paper studies the collinear equilibrium points of the restricted three-body problem under the effects of the oblateness of the bigger primary and the radiation pressure of the smaller primary. Using a semi-analytical and numerical approach, the positions and linear stability of these points are investigated for the binary systems RXJ 0450.1-5856 and Nova Cen 1969 (Cen X-4), and found to be affected by the oblateness and radiation pressure. The collinear points remain unstable in the sense of Lyapunov.

  6. Time extrapolation aspects in the performance assessment of high and medium level radioactive waste disposal in the Boom Clay at Mol (Belgium)

    International Nuclear Information System (INIS)

    SCK-CEN is studying the disposal of high and long-lived medium level waste in the Boom Clay at Mol, Belgium. In the performance assessment for such a repository time extrapolation is an inherent problem due to the extremely long half-life of some important radionuclides. To increase the confidence in these time extrapolations SCK-CEN applies a combination of different experimental and modelling approaches including laboratory and in situ experiments, natural analogue studies, deterministic (or mechanistic) models and stochastical models. An overview is given of these approaches and some examples of applications to the different repository system components are given. (author)

  7. X-ray emission from Centaurus A

    Energy Technology Data Exchange (ETDEWEB)

    Terrell, N.J.

    1981-01-01

    Observations of 3 to 12 keV x-ray emission from NGC 5128 (Cen A) were made by Vela spacecraft over the period 1969 to 1979. These data are in good agreement with previously reported data, but are much more complete. Numerous peaks of x-ray intensity occurred during the period 1973 to 1975, characterized by rapid increases and equally rapid decreases (in less than 10 days). Thus it seems probable that most of the x-ray flux from the nucleus of Cen A came from a single source of small size.

  8. Pesquisa Delphi: O Futuro do Turismo de Santa Catarina - Previsões entre 2007 e 2011

    OpenAIRE

    Fernando A. Ribeiro Serra; Eliza Bianchini Dallanhol Locks; Graciella Martignago; Solange Evangelista; Stefano Palumbo

    2009-01-01

    Este artigo apresenta o resultado da primeira parte de uma pesquisa Delphi sobre ?O Futuro do Turismo em Santa Catarina? realizada com especialistas do setor, compostos por empresários e acadêmicos. O objetivo fundamental foi o de identificar o cenário prospectivo mais provável de forma a orientar proposições e ações para atuação sobre este cenário. A metodologia considerou a escolha preliminar de 36 especialistas, segundo onze tópicos para análise, dos quais foram selecionados 12 especialist...

  9. Dicty_cDB: Contig-U14237-1 [Dicty_cDB

    Lifescience Database Archive (English)

    Full Text Available GACATTTCACCAATC TTAAAAACNAGNAACAAAAA Gap no gap Contig length 670 Chromosome number (1..6, M) 3 Chromosome...al RNA gene,... 34 0.087 2 ( AC116960 ) Dictyostelium discoideum chromosome 2 map complem... 2 map 5515173... 48 0.10 8 ( AY502546 ) HIV-1 isolate woman_116 clone 10 from Cen...tral Afr... 50 0.11 1 ( AY502311 ) HIV-1 isolate woman_116 clone 5 from Central Afri... 50 0.11 1 (... AY502192 ) HIV-1 isolate woman_116 clone 8 from Central Afri... 50 0.11 1 ( AY502180 ) HIV-1 isolate woman_116 clone 13 from Cen

  10. PROCES LIBERALIZACIJE ZRAČNEGA TRANSPORTA V EU IN V DRŽAVAH SKANDINAVIJE

    OpenAIRE

    Kociper, Danijel

    2014-01-01

    V začetnih fazah liberalizacije so na trgu letalskih storitev nastale spremembe: velikost in struktura omrežja letalskih linij sta se spremenila, prišlo je do znižanja cen, ker se je sprostil sistem oblikovanja cen, nastanek močnejšega razlikovanja storitev in uvedba novih storitev, nekatera podjetja so se specializirala za prevoze na daljših relacijah z uvedbo žariščnih letališč in njihovimi povezavami z obrobnimi letališči. Liberalizacija je ugodno vplivala na poslovanje prevoznikov. Pri na...

  11. Topoisomerase-1 and -2A gene copy numbers are elevated in mismatch repair-proficient colorectal cancers

    DEFF Research Database (Denmark)

    Sønderstrup, Ida Marie Heeholm; Nygård, Sune Boris; Poulsen, Tim Svenstrup;

    2015-01-01

    . MATERIAL AND METHODS: Test cohort: FISH analysis with an in-house TOP1/CEN20 probe mix and a commercially available TOP2A/CEN17 (Dako, Glostrup, Denmark) probe mix was performed on archival formalin fixed paraffin embedded (FFPE) tissue samples from 18 patients with proficient MMR (pMMR) CRC and 18...... patients with deficient MMR (dMMR) CRC. TOP1 and TOP2A gene copy numbers and their ratios per nucleus were correlated with MMR status using the Mann-Whitney test. Validation cohort: FFPE samples from 154 patients with primary stage III CRC (originally included in the RANX05 study) were classified according...

  12. Association of a centromere specific nucleosome with the yeast plasmid partitioning locus: Implications beyond plasmid partitioning

    OpenAIRE

    Jayaram, Makkuni

    2011-01-01

    The genetically defined point centromeres of budding yeasts and the epigenetically specified regional centromeres of all other eukaryotes harbor a common epigenetic mark in the form of a non-standard nucleosome. Although, the composition of the protein core of the centromere specific nucleosome and the nature of the DNA wrap around it are at present controversial, there is no doubt that this specialized nucleosome harbors a variant of the standard histone H3 (cenH3). The association of cenH3,...

  13. Domain architectures of the Scm3p protein provide insights into centromere function and evolution

    OpenAIRE

    Aravind, L.; Lakshminarayan, M. Iyer; Wu, Carl

    2007-01-01

    Recently, Scm3p has been shown to be a nonhistone component of centromeric chromatin that binds stoichiometrically to CenH3–H4 histones, and to be required for the assembly of kinetochores in S. cerevisiae. Scm3p is conserved across fungi, and displays a remarkable variation in protein size, ranging from ~200 amino acids in Saccharomyces cerevisiae to ~1300 amino acids in Neurospora crassa. This is primarily due a variable C-terminal segment that is linked to a conserved N-terminal, CenH3-int...

  14. Tripartite organization of centromeric chromatin in budding yeast

    OpenAIRE

    Krassovsky, Kristina; Henikoff, Jorja G.; Henikoff, Steven

    2011-01-01

    The centromere is the genetic locus that organizes the proteinaceous kinetochore and is responsible for attachment of the chromosome to the spindle at mitosis and meiosis. In most eukaryotes, the centromere consists of highly repetitive DNA sequences that are occupied by nucleosomes containing the CenH3 histone variant, whereas in budding yeast, a ∼120-bp centromere DNA element (CDE) that is sufficient for centromere function is occupied by a single right-handed histone variant CenH3 (Cse4) n...

  15. Integration of Social Sciences in Nuclear Research

    International Nuclear Information System (INIS)

    In 1998, SCK-CEN initiated a programme to integrate social sciences into its scientific and technological projects. Activities were started on the following issues: (1) sustainable development; (2) ethics and decision making in nuclear waste management (transgenerational ethics/retrievability; socio-psychological aspect and local involvement); (3) law and liability (medical applications and the basic safety standards implementation); (4) decision making (emergency management); safety culture; ALARA and ethical choices in protection). Two working groups were created to discuss two broad items: (1) ethical choices in radiation protection; and (2) the role and culture of the expert. Progress and major achievements in SCK-CEN's social science programme in 2001 are summarised

  16. Benchmarking two commonly used Saccharomyces cerevisiae strains for heterologous vanillin-β-glucoside production

    DEFF Research Database (Denmark)

    Strucko, Tomas; Magdenoska, Olivera; Mortensen, Uffe Hasbro

    2015-01-01

    factories for production of specific compounds. To examine this possibility, we have reconstructed a de novo vanillin-β-glucoside pathway in an identical manner in S288c and CEN.PK strains. Characterization of the two resulting strains in two standard conditions revealed that the S288c background strain...... produced up to 10-fold higher amounts of vanillin-β-glucoside compared to CEN.PK. This study demonstrates that yeast strain background may play a major role in the outcome of newly developed cell factories for production of a given product....

  17. Synthesis of clad motion experiments interpretation: codes and validation

    International Nuclear Information System (INIS)

    This communication deals with clad melting and relocation phenomena related to LMFBR safety analysis of loss of flow accidents. We present: - the physical models developed at DSN/CEN Cadarache in single channel and bundle geometry. The interpretation with these models of experiments performed by the STT (CEN Grenoble). It comes out that we have now obtained a good understanding of the involved phenomena in single channel geometry. On the other hand, further studies are necessary for a better knowledge of clad motion phenomena in bundle cases with conditions close to reactor ones

  18. Animal welfare strengthens the quality of research. 3 million euros for a ultramodern animal facility

    International Nuclear Information System (INIS)

    The Belgian Nuclear Research Center SCK-CEN has been studying the long-term effects of low radiation doses on health for over 40 years.This uses mice because more than 90 per cent of their genome is identical with that of human beings. In order to work better and more ethically, SCK-CEN has invested 3 million euros in a brand-new animal facility. This makes it possible to carry out research under the best possible conditions for both humans and mice.

  19. Cepheid Companions and the Masses of Cepheids

    Science.gov (United States)

    Bohm-Vitense, E.; Borutzki, S.; Harris, H.

    The authors have observed in the ultraviolet the hot companions of the Cepheids SV Per, RW Cam, SY Nor and KN Cen. The study of the absolute and relative intensities reveals that all, except the companion for KN Cen are evolved stars which should fit on almost the same mass track as the Cepheid. The authors find however that with generally accepted reddening values the companions of at least SV Per and RW Cam are too faint. Either the Cepheid loops are more luminous than presently calculated or the reddening is larger than presently accepted.

  20. Annual scientific report 1974

    International Nuclear Information System (INIS)

    The main activities of SCK/CEN during 1974 are reported in individual summaries. Fields of research are the following: sodium cooled fast reactors, gas cooled reactors, light water reactors, applied nuclear research (including waste disposal, safeguards and fusion research), basic and exploratory research (including materials science, nuclear physics and radiobiology). The BR2 Materials testing reactor and associated facilities are described. The technical and administrative support activities are also presented. A list of publications issued by the SCK/CEN Scientific staff is given