Experiences of audits in Juragua CEN

International Nuclear Information System (INIS)

Rodriguez Bertran, J.; Longoria Blanco del, H.

1998-01-01

This work tries about the application of a insurance quality system in the CEN of Juragu with the objective to guarantee the efficiency in the development of the activities and of avoiding the duplicity of efforts. The audits of quality detected a high quantity of unconformities in the first times of implementation. The used acting indicators have reflected the behavior of the audits and they have been good efficiently in the taking of decisions for their administration

An astrometric standard field in omega Cen

Science.gov (United States)

Wyse, Rosemary

2003-07-01

We propose to obtain a high-precision astrometric standard in a two-step procedure. First, we will create a ground-based astrometric standard field around omega Cen down to V=22 with a 3 mas accuracy in positions and better than 0.5 mas/yr in proper motions. This standard will be used to obtain precise absolute plate solutions for selected WFPC2 CCD frames and refine the self-calibrated mean distortion solution for the WFPC2 CCD chips. This will eliminate systematic errors inherent in the self-calibration techniques down to the rms=0.3 mas level, thus opening new opportunities to perform precision astrometry with WFPC2 alone or in combination with the other HST imaging instruments. We will also address the issue of the distortion's variation which has a paramount significance for space astrometry such as spearheaded by the HST or being under development {SIM, GAIA}. Second, all reduced WFPC2 CCD frames will be combined into the two field catalogs {astrometric flat fields} of positions in omega Cen of unprecedented precision {s.e.=0.1 mas} down to V=22 and will be available to the GO community and readily applicable to calibrating the ACS.

Deep and accurate near-infrared photometry of the Galactic globular cluster omega Cen .

Science.gov (United States)

Calamida, A.; Bono, G.; Corsi, C. E.; Stetson, P. B.; Prada Moroni, P. G.; Degl'Innocenti, S.; Marchetti, E.; Amico, P.; Ferraro, I.; Iannicola, G.; Monelli, M.; Buonanno, R.; Caputo, F.; Dall'Ora, M.; Freyhammer, L. M.; Koester, D.; Nonino, M.; Piersimoni, A. M.; Pulone, L.; Romaniello, M.

We present deep and accurate Near-Infrared (NIR) photometry of the Galactic Globular Cluster omega Cen . Data were collected using the Multi-Conjugate Adaptive Optics Demonstrator (MAD) mounted on the VLT (ESO). We combined the NIR photometry with optical space data collected with the Advanced Camera for Surveys (ACS) for the same region of the cluster. Our deep optical-NIR CMD indicates that the spread in age among the different stellar populations in omega Cen is at most of the order of 2 Gyr.

Contributions of the SCK.CEN Academy to education and training in nuclear science and technology

International Nuclear Information System (INIS)

Coeck, Michele

2015-01-01

Thanks to its thorough experience in the field of nuclear science and technology, its innovative research and the availability of large and unique nuclear installations, SCK.CEN is not only a renowned nuclear research institution, but also an important partner for nuclear education and training in Belgium as well as at international level. Within the SCK.CEN Academy, more than 60 years of nuclear expertise and experience gained from our different research projects is collected and transferred. In the interest of maintaining a competent workforce in industry, Healthcare, research, and policy, and of transferring nuclear knowledge and skills to the next generations, the SCK.CEN Academy takes it as its mission to: - provide guidance for students and early-stage researchers; - organize academic courses and customized training for professionals; - offer policy support with regard to education and training matters; - care for critical-intellectual capacities for society. Specifically in the domain of nuclear instrumentation the SCK.CEN Academy provides an opportunity to students at Bachelor, Master and PhD level to make use of the SCK.CEN infrastructure to support their thesis research or to perform an internship with the aim to improve and extend their knowledge and skills in a specific research or technical domain. Further, they can contribute to new findings in the field of nuclear instrumentation. The students are guided by our scientists, engineers and technicians who have years of experience in the relevant field. In addition, the SCK.CEN Academy contributes to traditional university education programs and delivers courses in several nuclear topics such as dosimetry. We also coordinate the Belgian Nuclear higher Engineering Network (BNEN), a one year (60 ECTS) master-after-master specialization in nuclear engineering in which 6 Belgian universities and SCK.CEN are involved. Beyond the contributions to academic education, we also provide several customized training

Contributions of the SCK.CEN Academy to education and training in nuclear science and technology

Energy Technology Data Exchange (ETDEWEB)

Coeck, Michele [SCK.CEN Academy, Boeretang 200, BE-2400 Mol (Belgium)

2015-07-01

Thanks to its thorough experience in the field of nuclear science and technology, its innovative research and the availability of large and unique nuclear installations, SCK.CEN is not only a renowned nuclear research institution, but also an important partner for nuclear education and training in Belgium as well as at international level. Within the SCK.CEN Academy, more than 60 years of nuclear expertise and experience gained from our different research projects is collected and transferred. In the interest of maintaining a competent workforce in industry, Healthcare, research, and policy, and of transferring nuclear knowledge and skills to the next generations, the SCK.CEN Academy takes it as its mission to: - provide guidance for students and early-stage researchers; - organize academic courses and customized training for professionals; - offer policy support with regard to education and training matters; - care for critical-intellectual capacities for society. Specifically in the domain of nuclear instrumentation the SCK.CEN Academy provides an opportunity to students at Bachelor, Master and PhD level to make use of the SCK.CEN infrastructure to support their thesis research or to perform an internship with the aim to improve and extend their knowledge and skills in a specific research or technical domain. Further, they can contribute to new findings in the field of nuclear instrumentation. The students are guided by our scientists, engineers and technicians who have years of experience in the relevant field. In addition, the SCK.CEN Academy contributes to traditional university education programs and delivers courses in several nuclear topics such as dosimetry. We also coordinate the Belgian Nuclear higher Engineering Network (BNEN), a one year (60 ECTS) master-after-master specialization in nuclear engineering in which 6 Belgian universities and SCK.CEN are involved. Beyond the contributions to academic education, we also provide several customized training

Reply to Cen LiXiang, Li XinQi, and Yan YiJing: No adiabatic conditional geometrical phase shift

OpenAIRE

Xiangbin, Wang

2002-01-01

Much long before the appearing time of the Comment by Cen, Li, and Yan,, the main issue addresed there by Cen et al had been resolved already. The information offered by the Comment is selective and misleading.

European standards and regulation - CEN/CENELEC

Energy Technology Data Exchange (ETDEWEB)

Caballero, J. [AENOR, Madrid (Spain)

1997-02-27

An overview is given of the European Standards structure, as well as the general Directives and Regulations related to the Heating, Ventilation and Air Conditioning Sector. The importance of standardisation, both on quality and as a strategic tool for manufacturers, is stressed. Participation in the elaboration of standards makes it possible to reflect a manufacturer`s technology in the standards. Voluntary standardisation can be used as a differentiating element. European standards for the HVAC sector are being elaborated by the European Standardisation Committee (CEN), the European Electrotechnical Standardisation Committee (CENELEC) and by the European Telecommunication Institute (ETSI)

Spectroscopic abundance analyses of the 3He stars HD 185330 and 3 Cen A

Science.gov (United States)

Sadakane, Kozo; Nishimura, Masayoshi

2018-04-01

Abundances of 21 elements in two 3He stars, HD 185330 and 3 Cen A, have been analysed relative to the well-studied sharp-lined B3 V star ι Her. Six elements (P, Ti, Mn, Fe, Ni, and Br) are over-abundant in these two peculiar stars, while six elements (C, O, Mg, Al, S, and Cl) are under-abundant. Absorption lines of the two rarely observed heavy elements Br II and Kr II are detected in both stars and these elements are both over-abundant. The centroid wavelengths of the Ca II infrared triplet lines in these stars are redshifted relative to those lines in ι Her and the presence of heavy isotopes of Ca (mass number 44-46) in these two stars is confirmed. In spite of these similarities, there are several remarkable differences in abundance pattern between these two stars. N is under-abundant in HD 185330, as in many Hg-Mn stars, while it is significantly over-abundant in 3 Cen A. P and Ga are both over-abundant in 3 Cen A, while only P is over-abundant and no trace of absorption line of Ga II can be found in HD 185330. Large over-abundances of Kr and Xe are found in both stars, while the abundance ratio Kr/Xe is significantly different between them (-1.4 dex in HD 185330 and +1.2 dex in 3 Cen A). Some physical explanations are needed to account for these qualitative differences.

The Not So Simple Globular Cluster ω Cen. I. Spatial Distribution of the Multiple Stellar Populations

Energy Technology Data Exchange (ETDEWEB)

Calamida, A.; Saha, A. [National Optical Astronomy Observatory—AURA, 950 N Cherry Avenue, Tucson, AZ, 85719 (United States); Strampelli, G.; Rest, A. [Space Telescope Science Institute—AURA, 3700 San Martin Drive, Baltimore, MD 21218 (United States); Bono, G.; Ferraro, I.; Iannicola, G. [INAF—Osservatorio Astronomico di Roma—Via Frascati 33, I-00040, Monteporzio Catone, Rome (Italy); Scolnic, D. [The University of Chicago, The Kavli Institute for Cosmological Physics, William Eckhardt Research Center—Suite 499, 5640 South Ellis Avenue, Chicago, IL 60637 (United States); James, D.; Smith, C.; Zenteno, A., E-mail: calamida@noao.edu [Cerro Tololo Inter-American Observatory, Casilla 603, La Serena (Chile)

2017-04-01

We present a multi-band photometric catalog of ≈1.7 million cluster members for a field of view of ≈2° × 2° across ω Cen. Photometry is based on images collected with the Dark Energy Camera on the 4 m Blanco telescope and the Advanced Camera for Surveys on the Hubble Space Telescope . The unprecedented photometric accuracy and field coverage allowed us, for the first time, to investigate the spatial distribution of ω Cen multiple populations from the core to the tidal radius, confirming its very complex structure. We found that the frequency of blue main-sequence stars is increasing compared to red main-sequence stars starting from a distance of ≈25′ from the cluster center. Blue main-sequence stars also show a clumpy spatial distribution, with an excess in the northeast quadrant of the cluster pointing toward the direction of the Galactic center. Stars belonging to the reddest and faintest red-giant branch also show a more extended spatial distribution in the outskirts of ω Cen, a region never explored before. Both these stellar sub-populations, according to spectroscopic measurements, are more metal-rich compared to the cluster main stellar population. These findings, once confirmed, make ω Cen the only stellar system currently known where metal-rich stars have a more extended spatial distribution compared to metal-poor stars. Kinematic and chemical abundance measurements are now needed for stars in the external regions of ω Cen to better characterize the properties of these sub-populations.

¿Existe un efecto nutricional en el Centro de Educación y Nutrición (CEN) de Costa Rica?

OpenAIRE

Mata, Leonardo; Murillo González, Sandra

1980-01-01

artículo (arbitrado) -- Universidad de Costa Rica. Instituto de Investigaciones en Salud (INISA), 1980 In order to assess the nutritional impact of the Centres of Education and Nutrition (CEN) funded by the Social Development Program and Assignments Relatives five CEN Puriscal region were selected, where Institute of Health Research (INISA) takes biomédi comments · cas prospective nature of mothers and children. The analysis covered by this report concerns a CEN where i...

The antimicrobial effect of CEN1HC-Br against Propionibacterium acnes and its therapeutic and anti-inflammatory effects on acne vulgaris.

Science.gov (United States)

Han, Rui; Blencke, Hans-Matti; Cheng, Hao; Li, Chun

2018-01-01

Propionibacterium acnes is a commensal bacterium, which is involved in acne inflammation. An antimicrobial peptide named CEN1HC-Br, which was isolated and characterized form the green sea urchin, has been shown to possess broad-spectrum antibacterial activity. Little is known concerning the potential effects of its antibacterial and anti-inflammatory properties against P. acnes. To examine the potency of CEN1HC-Br in acne treatment, we conducted experiments to analyze the antibacterial and anti-inflammatory activities of CEN1HC-Br both in vitro and in vivo. The antimicrobial activity of CEN1HC-Br was evaluated by minimal inhibitory concentration (MIC) assays using the broth dilution method. To elucidate the in vitro anti-inflammatory effect, HaCaT cells and human monocytes were treated with different concentration of CEN1HC-Br after stimulation by P. acnes. The expression of TLR2 and the secretion of the pro-inflammatory cytokines IL-6, IL-8, IL-1β, TNF-α, IL-12, respectively, were measured by enzyme immunoassays. An evaluation of P. acnes-induced ear edema in rat ear was conducted to compare the in vivo antibacterial and anti-inflammatory effect of CEN1HC-Br, the expression of IL-8, TNF-α, MMP-2 and TLR2 was evaluated by immunohistochemistry and real time-PCR. CEN1HC-Br showed stronger antimicrobial activity against P. acnes than clindamycin. CEN1HC-Br significantly reduced the expression of interleukin IL-12p40, IL-6, IL-1β, TNF-α and TLR2 in monocytes, but they were not influenced by clindamycin. Both CEN1HC-Br and Clindamycin attenuated P. acnes-induced ear swelling in rat along with pro-inflammatory cytokines IL-8, TNF-α, MMP-2 and TLR2. Our data demonstrates that CEN1HC-Br is bactericidal against P. acnes and that it has an anti-inflammatory effect on monocytes. The anti-inflammatory effect may partially occur through TLR2 down-regulation, triggering an innate immune response and the inhibition of pro-inflammatory cytokines. Copyright © 2017 The

Fusion Programme SCK-CEN - Annual report 2009

International Nuclear Information System (INIS)

Massaut, V.

2009-01-01

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.

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.

The dwarf novae WX Hyi and V436 Cen

International Nuclear Information System (INIS)

Bailey, J.

1979-01-01

High speed photometric observations of the dwarf novae WX Hydri and V436 Centauri are presented. WX Hyi was observed during a supermaximum, and showed 'superhumps' repeating with a period of 111 min, similar to those observed in a number of similar systems. Neither WX Hyi nor V436 Cen show any periodic modulation in their quiescent state light curves. (author)

Towards Optimality in Online Learning – The OLeCenT Approach

Directory of Open Access Journals (Sweden)

Carl Beckford

2017-06-01

Full Text Available Higher Education Institutions (HEIs employ Learning Management Systems (LMSs primarily for greater efficiency, profitability, technological advancement or survival. The predominantly used LMSs, Moodle and Blackboard account for in excess of 60% usage by the top HEIs. However, the individual international regions do not necessarily bear the percentages of the overall total. Gaps are identified in optimality in course delivery within online learning when one studies LMSs and their functionalities. Advanced Distributed Learning (ADL Initiative which was established to standardize and modernize training and education management and delivery, developed and recommended usage of Sharable Content Object Reference Model (SCORM 2004 and later versions. SCORM 2004 which provides for flexibility in sequencing and navigation for learner-centric course delivery is not supported in any version of the more prevalently used LMSs. It is believed that most people have a preferred way in processing information. We propose codifying one or more Learning Style Instruments (LSIs, diagnosing the preferred teaching approach(es and dominant/existing learning styles within a batch of learners, then providing course delivery as a best-fit per learner. As a proof of concept, OLeCenT allows the input of one or more course learning paths with real-time learning and automatic reconfiguration of the course path where a new trend or pattern is identified. OLeCenT identified disparity in teaching-learning and provided a mechanism towards improving online learner-centric course delivery. OLeCenT also identified comparative levels of similarities among learners and instructors even where they are deemed to be of different teaching-learning styles/mechanisms.

Participation in CEN TC 335 TC343 Chemical Test Methods. Final report; Deelname CEN TC 335 TC343 Chemical Testmethods. Eindrapportage

Energy Technology Data Exchange (ETDEWEB)

Bakker, F.P. [ECN Engineering en Services, Petten (Netherlands)

2006-12-15

An overview is given of the work that has been done on the standardization of methods for the characterization of biofuels and solid recovered fuels (SRF). For biofuels a complete set of prestandards is available, conversion of pre-standards to standards is in good progress. The development of a standard biocarbon content method based on the {sup 14}C isotope measurement is in good progress. This standard could be an important tool for carbon dioxide trading purposes. CEN is the European Commission for Standardization, TC 335 is the Technical Committee 335 on Solid Biofuels, and TC 343 is the Technical Committee on Solid Recovered Fuels. [Dutch] In de periode september 2005 tot december 2006 zijn Europese standaarden voor de karakterisering van biobrandstoffen beschikbaar gekomen. Voor een aantal parameters is nader onderzoek vereist en deels gaande. Dankzij de ervaring die in Nederland is opgedaan met Nationale Technische Afspraken (NTA's) voor vaste biobrandstoffen heeft onze bijdrage aan de Europese normering de invoering daarvan zeker bespoedigd. De 14C groendeel bepaling begint terrein te winnen en zal in de nabije toekomst ook bij verdere implementatie van het Kyoto protocol een rol gaan spelen. CEN is de European Commission for Standardization, TC 335 is de Technical Committee 335 over Solid Biofuels, en TC 343 is de Technical Committee over Solid Recovered Fuels.

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.

CEN standards for solar thermal systems - State of the art and expectted impact

NARCIS (Netherlands)

Ree, B.G.C. van der; Pauschinger, Th.

1996-01-01

Since 1994, the European Committee for Standardization (CEN) Technical Committee TC 312 has been active in producing European Standards for thermal solar energy systems and components. In this paper, an overview of the present State of the Art of the draft standards is presented. These standards

The back-end management of fissile material at SCK-CEN

International Nuclear Information System (INIS)

Noynaert, L.; Massaut, V.; Braeckeveldt, M.

1999-01-01

The back-end management of fissile materials at SCK-CEN mainly concerns the HEU spent fuel of the BR2 (MTR) and the LEU and MOX spent fuel of the BR3, the first PWR installed in Western Europe and in decommissioning since 1987. It also concerns the experimental fuels tested in the SCK-CEN facilities. Furthermore as a result of its R and D programs in reprocessing and characterisation of spent fuel, considerable amounts of fissile materials in all kinds of forms and characteristics are stored in the different laboratories. For these, six main types of fissile materials are identified: highly enriched uranium, experimental spent fuel from the fast breeder programmes, MOX fuel, low enriched fuel, natural uranium and lab fissile materials. For the BR2 and BR3 spent fuel, various options, i.e. reprocessing, dry storage in casks and dry storage in canisters were evaluated against criteria, e.g. available techniques, safety, waste production, overall costs and policies. As a result of these studies, it was decided to opt in the case of the HEU from the BR2 reactor for the reprocessing without recovery of uranium while for the LEU and MOX fuel from the BR3 reactor, the dry storage in containers was chosen. For the others, the studies are still in progress. (author)

Proposição de método para avaliar a maturidade do processo de cenários nas organizações.

Directory of Open Access Journals (Sweden)

Nathália Macêdo De Morais

2015-04-01

Full Text Available Estudos de cenários são desenvolvidos por governos e organizações como meio para vislumbrar futuros possíveis e assim realizar o traçado de suas estratégias. Ocorre que existem poucas pesquisas que avaliem a efetividade desses estudos. Normalmente o que se encontra na literatura são atributos destinados a avaliar o documento de apresentação do cenário. Nesse sentido, uma abordagem possível é a distinção entre o conteúdo, ou seja, o produto cenário propriamente dito, e o processo que dá suporte à sua elaboração. Nesse contexto teórico, a pesquisa objetivou propor e aplicar um método para avaliar a maturidade do processo de cenários nas organizações. Em consequência, identificaram-se os componentes e subcomponentes principais do processo de cenários que permitam avaliá-los; definiram-se as métricas que indiquem os estágios de maturidade organizacional em cenários; e realizou-se um exercício de aplicação do método por meio de pesquisa a um conjunto de organizações brasileiras selecionadas. Como uma alternativa possível para basear o método proposto, foi utilizado o modelo de maturidade em gerenciamento de projetos (MMGP. Assim, empreendeu-se um estudo multimetodológico, qualitativo e interpretativo para a coleta e interpretação dos dados, constando de levantamento bibliográfico, entrevistas com expertises do meio acadêmico e uso de técnica de análise de conteúdo. Como resultado, obteve-se uma proposta de avaliação do processo de cenários nas organizações, na qual se consideraram as seguintes etapas: preparação, elaboração, produção do documento e utilização. Para determinar qual o estágio alcançado em cenários, os estágios foram assim classificados: inativo, iniciado, padronizado, gerenciado e otimizado, culminando nos níveis de maturidade muito fraco, fraco, regular, bom, ótimo e excelente. O exercício de aplicação do método com 13 organizações brasileiras identificou

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

International Nuclear Information System (INIS)

Carle, B.

2009-01-01

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

Miniature fission chambers calibration in pulse mode: interlaboratory comparison at the. SCK·CEN BR1 and CEA CALIBAN reactors

International Nuclear Information System (INIS)

Lamirand, V.; Geslot, B.; Gregoire, G.; Garnier, D.; Breaud, S.; Mellier, F.; Di-Salvo, J.; Destouches, C.; Blaise, P.; Wagemans, J.; Borms, L.; Malambu, E.; Casoli, P.; Jacquet, X.; Rousseau, G.; Sauvecane, P.

2013-06-01

Miniature fission chambers are suited tools for instrumenting experimental reactors, allowing online and in-core neutron measurements of quantities such as fission rates or reactor power. A new set of such detectors was produced by CEA to be used during the next experimental program at the EOLE facility starting in 2013. Some of these detectors will be employed in pulse mode for absolute measurements, thus requiring calibration. The calibration factor is expressed in mass units and thus called 'effective mass'. A calibration campaign was conducted in December 2012 at the SCK.CEN BR1 facility within the framework of the scientific cooperation VEP (VENUS-EOLE-PROTEUS) between SCK.CEN, CEA and PSI. Two actions were conducted in order to improve the calibration method. First a new characterisation of the thermal flux cavity and the MARK3 neutron flux conversion device performed by SCK.CEN allowed using calculated effective cross sections for determining detectors effective masses. Dosimetry irradiations were performed in situ in order to determine the neutron flux level and provide link to the metrological standard. Secondly two fission chambers were also calibrated at the CEA CALIBAN reactor (fast neutron spectrum), using the same method so that the results can be compared with the results obtained at the SCK.CEN. In this paper the calibration method and recent improvements on uncertainty reduction are presented. The results and uncertainties obtained in the two reactors CALIBAN and BR1 are compared and discussed. (authors)

From nuclear installation to greenfield site. SCK-CEN develops a new measurement method

International Nuclear Information System (INIS)

2014-01-01

The article discusses a new measurement method that has been developed by the Belgian Nuclear Research Center SCK-CEN in conjunction with the decommissioning of nuclear facilities. This measurement technique is based on on-site gamma ray spectrometry in combination with modelling and is employed for directing the flow of demolition materials in the decommissioning of nuclear facilities.

Utilização de cenários de mudança para a previsão da evolução das pressões e do estado das massas de água subterrâneas e EDAS - Caso de estudo:Melides. Cenários de alterações climáticas

OpenAIRE

Novo, M. E.; Oliveira, L. G. S.

2014-01-01

Neste artigo faz-se uma projecção da avaliação da evolução das pressões sobre as águas superficiais e subterrâneas da bacia de Melides sob cenários de alterações climáticas para o horizonte temporal de 2100 e cenários de emissões IS92a, SRES A2 e SRES B2. Os valores de recarga e escoamento superficial para estes cenários e consequente variação do volume médio da lagoa de Melides foram depois cruzados com a evolução das pressões qualitativas e quantitativas. A evolução das press...

New CCD photometric investigation of the early-type overcontact binary BH Cen in the young star-forming Galactic cluster IC 2944

Science.gov (United States)

Zhao, Er-Gang; Qian, Sheng-Bang; Zejda, Miloslav; Zhang, Bin; Zhang, Jia

2018-05-01

BH Cen is a short-period early-type binary with a period of 0.792d in the extremely young star-forming cluster IC 2944. New multi-color CCD photometric light curves in U, B, V, R and I bands are presented and are analyzed by using the Wilson-Devinney code. It is detected that BH Cen is a high-mass-ratio overcontact binary with a fill-out factor of 46.4% and a mass ratio of 0.89. The derived orbital inclination i is 88.9 degrees, indicating that it is a totally eclipsing binary and the photometric parameters can be determined reliably. By adding new eclipse times, the orbital period changes in the binary are analyzed. It is confirmed that the period of BH Cen shows a long-term increase while it undergoes a cyclic oscillation with an amplitude of A 3 = 0.024 d and a period of P 3 = 50.3 yr. The high mass ratio, overcontact configuration and long-term continuous increase in the orbital period all suggest that BH Cen is in the evolutionary state after the shortest-period stage of Case A mass transfer. The continuous increase in period can be explained by mass transfer from the secondary component to the primary one at a rate of Ṁ 2 = 2.8 × 10‑6 M ⊙ per year. The cyclic change can be plausibly explained by the presence of a third body because both components in the BH Cen system are early-type stars. Its mass is determined to be no less than 2.2 M ⊙ at an orbital separation of about 32.5 AU. Since no third light was found during the photometric solution, it is possible that the third body may be a candidate for a compact object.

A Bayesian approach to the modelling of α Cen A

Science.gov (United States)

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

2012-12-01

Determining the physical characteristics of a star is an inverse problem consisting of estimating the parameters of models for the stellar structure and evolution, and knowing certain observable quantities. We use a Bayesian approach to solve this problem for α 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, 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 that MCMC methods become efficient with respect to more classical grid-based strategies when the number of parameters increases. The results of our MCMC algorithm allow us to derive estimates for the stellar parameters and robust uncertainties thanks to the statistical analysis of the posterior 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 importance for our knowledge of the structure of this star.

O Brasil no mundo: conjecturas e cenários

Directory of Open Access Journals (Sweden)

Sebastião C. Velasco e Cruz

2006-04-01

Full Text Available O PRESENTE artigo resume parte dos resultados de um amplo projeto sobre o Brasil ante cenários internacionais possíveis. Adotando a postura prospectiva que informou todo esse projeto, o artigo indica algumas das linhas de força que deverão estabelecer o elo entre o sistema internacional presente e o que haverá no futuro, em um horizonte de vinte anos, destacando entre outros o papel dos EUA, da Europa e da China nesse processo. Quatro cenários são utilizados como base para a análise do caso brasileiro: Desconcentração conflituosa, Multipolaridade benigna, Unipolar consolidado e Ordem liberal cosmopolita. Considera-se aqui o Brasil como um país intermediário, afastado das áreas críticas de tensão internacional, e que, portanto, dispõe de certa margem de manobra e razoável condição para definir suas estratégias internacionais.THIS article presents part of the results of a broad research about Brazil and international scenarios. Assuming the same prospective view of the research project, this article indicates a few current driving forces that will contribute to define international order in the future, in a 20 years perspective. The roles of the USA, Europe and China are highlighted in this analysis. Four scenarios are used as parameters for the analysis of the Brazilian case: conflictive deconcentration, benign multipolarity; consolidated unipolarity and cosmopolitan liberal order. We consider Brazil as an Intermediate State out of the critical areas of international conflict. We also consider that Brazil has certain margin for maneuver and reasonable amount of capacity to define its international strategies.

No one can play snooker that fast. SCK•CEN performs computer simulations of nuclear fuel behaviour

International Nuclear Information System (INIS)

2014-01-01

The article discusses the project F-Bridge, which is funded under the seventh European framework programme. The objective of F-Bridge apply knowledge gained from fundamental science to to the development of Gen-IV fuels. The ultimate goal is to set up an international exchange platform for the integration and the coordination of nuclear fuel research. As part of the F-Bridge project, the Belgian Nuclear Research Center SCK-CEN collaborates with other institutes in Europe in a work package on multi-scale modelling. The main contribution of SCK-CEN focuses on atomic-scale computer simulations. The employed techniques are based on empirical force fields and describe atomic interactions using simple parameters and analytical formulas. Based on Newton’s theory, the evolution of a series of atoms and their interaction over a given time period can be predicted.

New fuels for proliferation-safe research reactors. SCK-CEN a kingpin in international research

International Nuclear Information System (INIS)

Van den Berghe, S.

2011-01-01

A number of research reactors in the world, including BR2, are still working on highly enriched proliferation sensitive nuclear fuel. Extremely high-density fuel is required to make possible the switch to low-enriched fuel without loss of effectiveness. In the past few years, SCK-CEN has developed into the global test station for new, low-enriched fuels.

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

DEFF Research Database (Denmark)

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

2011-01-01

, and the Grüneisen parameter behaves smoothly. The electronic structure is also calculated using the quasiparticle self-consistent GW approximation (where G denotes the Green's function and W denotes the screened interaction). The Fermi surface of CeN is dominated by large egg-shaped electron sheets centered...

Gamma irradiation facilities for radiation tolerance assessment of components and systems at SCK.CEN

International Nuclear Information System (INIS)

Coenen, S.; Decreton, M.

1999-01-01

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)

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

Cenários experimentais: efeito sobre a emoção e o comportamento pró-social Experimental simulations: effect over emotions and prosocial behavior

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Ronaldo Pilati

2011-08-01

Full Text Available Emoções antecedentes ao comportamento pró-social são influenciadas pela forma como os eventos são interpretados. Estudos têm demonstrado que a atribuição de incontrolabilidade do comportamento de alguém está associada à produção de estados afetivos de simpatia ou pena. Esta asserção teórica tem sido corroborada por meio do uso de cenários de simulação experimental. O objetivo deste estudo é avaliar o efeito que a variação dos cenários, como a proximidade social do protagonista e as normas sociais subjacentes ao cenário, possuem sobre a relação atribuição-ajuda. Foi desenvolvido um estudo com 24 cenários do qual participaram 547 estudantes universitários. Os resultados indicaram que, independentemente do cenário, a percepção de incontrolabilidade levou a emoções simpáticas (ou de compaixão que, por sua vez, estão associadas a uma maior intenção de ajuda. Além disto, cenários que emulam normas de reciprocidade estão associados à maior intenção de ajudaProsocial behavior emotions are influenced by how events are interpreted. Studies have shown that the attribution of incontrolabitily to one's behavior is associated with the production of sympathy emotions. This theoretical assertion has been corroborated with experimental scenarios. This study aimed to evaluate the effect of variations of the scenarios, such as the social proximity of the protagonist and social norms have over prosocial behavior intentions. An experimental study with 24 scenarios was conducted and 547 university students took part. The results indicate that regardless of the scenario content perceived misfortune leads to sympathy or pity emotions which, in turn, are associated with greater helping intention. Reciprocity norm scenarios were associated with greater helping intentions

U. S. Pacific Fleet. Central Pacific Force. Operation Plan Number Cen 1-43

Science.gov (United States)

1943-10-25

Wareagle Snowflake Stork Beagle v Jocko Bagdad Frolic Locust Tycoon Vulture Dodger Husky Trojan Harpoon Designation or Commander A-II-2 COMM. A...Tiptop Killnrney Saskatoon Dodger Boar lake Titvdllow Beagle Huniboldt Moonglow Raiiisgate COIJ2!. A-II GOMI. A-II OPERATIONfPI^M No. Cen 1-43 ANNEX A...Daytona Decatur Delaware Denmark Del Rio Democrat DeSoto Dingbct Dodger Dogwood Dolores Ship or Unit TG 54.1 CTG 54.6 CTF 51 LST 78 Hq

Supportive Supervision: Meeting to Build Interdisciplinary Teams in the Northern Central Regional Office of the CEN CINAI

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Georgianella Araya-Alegría

2015-01-01

Full Text Available This article is the result of a participatory action research project aimed at providing a novel approach for the Northern Central Regional Office of the CEN CINAI [Education and Nutrition Centers (CEN and the Children’s Nutrition and Comprehensive Care Centers (CINAI] to build knowledge on an unfinished process: “Supportive Supervision” (supervisión capacitante.  Based on a naturalistic premise, we tried to answer a question that guided us in the group creation and transformation, switching our meetings from a vertical standpoint to a horizontal relationship providing accompaniment, support and construction, as well as analysis and reflection. The article shows the aspects that justified the development of the participative action research process under a methodological proposal that involves those of us who participated and contributed to build knowledge with our experience and from different locations within the Region.  A total of 29 professionals participated, willing to jointly meet a purpose: construct knowledge based on team work and on a process full of uncertainty that encourages us to constantly revise what has already been built and enables us to re-read and retake what has already been written and to systematize what could not be written before. In order words, to make this process a new way of developing knowledge that implies a more concrete standpoint to understand what “Supportive Supervision” is and how it is done, with the purpose of always looking for improvement within the National Directorate of CEN CINAI.

Orbital period changes in RW CrA, DX Vel and V0646 Cen

Science.gov (United States)

Volkov, I. M.; Chochol, D.; Grygar, J.; Mašek, M.; Juryšek, J.

2017-06-01

We aim to determine the absolute parameters of the components of southern Algol-type binaries with deep eclipses RW CrA, DX Vel, V0646 Cen and interpret their orbital period changes. The data analysis is based on a high quality Walraven photoelectric photometry, obtained in the 1960-70s, our recent CCD photometry, ASAS (Pojmanski, 2002), and Hipparcos (Perryman et al., 1997) photometry of the objects. Their light curves were analyzed using the PHOEBE program with fixed effective temperatures of the primary components, found from disentangling the Walraven (B-U) and (V-B) colour indices. We found the absolute parameters of the components of all three objects. All reliable observed times of minimum light were used to construct and analyze the Eclipse Time Variation (ETV) diagrams. We interpreted the ETV diagrams of the detached binary RW CrA and the semi-detached binary DX Vel by a LIght-Time Effect (LITE), estimated parameters of their orbits and masses of their third bodies. We suggest a long term variation of the inclination angle of both eclipsing binaries, caused by a non-coplanar orientation of their third body orbits. We interpreted the detected orbital period increase in the semi-detached binary V0646 Cen by a mass transfer from the less to more massive component with the rate M⊙ = 6.08×10-9 M⊙/yr.

Constraining the inclination of the Low-Mass X-ray Binary Cen X-4

Science.gov (United States)

Hammerstein, Erica K.; Cackett, Edward M.; Reynolds, Mark T.; Miller, Jon M.

2018-05-01

We present the results of ellipsoidal light curve modeling of the low mass X-ray binary Cen X-4 in order to constrain the inclination of the system and mass of the neutron star. Near-IR photometric monitoring was performed in May 2008 over a period of three nights at Magellan using PANIC. We obtain J, H and K lightcurves of Cen X-4 using differential photometry. An ellipsoidal modeling code was used to fit the phase folded light curves. The lightcurve fit which makes the least assumptions about the properties of the binary system yields an inclination of 34.9^{+4.9}_{-3.6} degrees (1σ), which is consistent with previous determinations of the system's inclination but with improved statistical uncertainties. When combined with the mass function and mass ratio, this inclination yields a neutron star mass of 1.51^{+0.40}_{-0.55} M⊙. This model allows accretion disk parameters to be free in the fitting process. Fits that do not allow for an accretion disk component in the near-IR flux gives a systematically lower inclination between approximately 33 and 34 degrees, leading to a higher mass neutron star between approximately 1.7 M⊙ and 1.8 M⊙. We discuss the implications of other assumptions made during the modeling process as well as numerous free parameters and their effects on the resulting inclination.

MEXICO loop provides essential technology for MYRRHA. SCK•CEN investigates the chemistry of lead-bismuth

International Nuclear Information System (INIS)

2014-01-01

In the MYRRHA facility, Lead-Bismuth Eutectic (LBE) alloy will act as the primary coolant. There are different experimental lead-bismuth loops in the world. Most have been designed to study steel corrosion in LBE or the thermohydraulics of LBE. The article discusses the MEXICO test loop, which has been developed by SCK-CEN to investigate the chemistry of leadbismuth.

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

International Nuclear Information System (INIS)

Collard, G.E.R.

2000-01-01

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)

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.

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

International Nuclear Information System (INIS)

Chakraborty, S.; Stoian, A.

2005-01-01

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.)

Canadian Cytogenetic Emergency network (CEN) for biological dosimetry following radiological/nuclear accidents.

Science.gov (United States)

Miller, Susan M; Ferrarotto, Catherine L; Vlahovich, Slavica; Wilkins, Ruth C; Boreham, Douglas R; Dolling, Jo-Anna

2007-07-01

To test the ability of the cytogenetic emergency network (CEN) of laboratories, currently under development across Canada, to provide rapid biological dosimetry using the dicentric assay for triage assessment, that could be implemented in the event of a large-scale radiation/nuclear emergency. A workshop was held in May 2004 in Toronto, Canada, to introduce the concept of CEN and recruit clinical cytogenetic laboratories at hospitals across the country. Slides were prepared for dicentric assay analysis following in vitro irradiation of blood to a range of gamma-ray doses. A minimum of 50 metaphases per slide were analyzed by 41 people at 22 different laboratories to estimate the exposure level. Dose estimates were calculated based on a dose response curve generated at Health Canada. There were a total of 104 dose estimates and 96 (92.3%) of them fell within the expected range using triage scoring criteria. Half of the laboratories analyzed 50 metaphases in

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

Czech Academy of Sciences Publication Activity Database

Zasche, P.; Hoňková, K.; Juryšek, Jakub; Mašek, Martin

2015-01-01

Roč. 65, č. 2 (2015), s. 151-168 ISSN 0001-5237 R&D Projects: GA MŠk(CZ) LG13007 EU Projects: European Commission(XE) 283783 - GLORIA Institutional support: RVO:68378271 Keywords : eclipsing binaries * V949 Cen * V358 Pup * V1055 Sco Subject RIV: BN - Astronomy, Celestial Mechanics, Astrophysics OBOR OECD: Astronomy (including astrophysics,space science) Impact factor: 2.000, year: 2015

Comparison of the proteomes of three yeast wild type strains: CEN.PK2, FY1679 and W303

DEFF Research Database (Denmark)

Rogowska-Wrzesinska, A.; Mose Larsen, P.; Blomberg, A.

2001-01-01

Yeast deletion strains created during gene function analysis projects very often show drastic phenotypic differences depending on the genetic background used. These results indicate the existence of important molecular differences between the CEN.PK2, FY1679 and W303 wild type strains...

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

International Nuclear Information System (INIS)

Coeck, M.

2011-01-01

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.

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

International Nuclear Information System (INIS)

Guth, H.; Paulus, H.; Reimers, W.; Heger, G.

1983-09-01

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.) [de

Control program of the neutron four-circle-diffractometer P110 at the ORPHEE reactor/CEN Saclay

International Nuclear Information System (INIS)

Guth, H.; Paulus, H.; Reimers, W.; Heger, G.

1984-05-01

The four-circle diffractometer P110 for elastic neutron scattering on single crystals was installed at the ORPHEE reactor/CEN Saclay in 1982. The control progam, presented here, is a new update of the former program versions used at the FR2 reactor. Important improvements concerning reliability and handling of the diffractometer are added. (orig./HP) [de

Efeitos de cenários de uso do solo sobre o regime hidríco e produção de sedimentos na bacia do Ribeirão Concórdia - SC

Directory of Open Access Journals (Sweden)

Mauricio Perazzoli

2013-10-01

Full Text Available O uso inadequado dos solos agrícolas vem causando a perda gradual da sua capacidade produtiva e a degradação dos recursos hídricos por sedimentos e poluentes. O uso do solo pode afetar os processos hidrológicos e a erosão do solo na bacia. O objetivo do trabalho foi simular diferentes cenários de uso do solo para a bacia hidrográfica do ribeirão Concórdia, utilizando o modelo SWAT, e analisar os efeitos dessas mudanças no fluxo de água e de sedimentos. Os cenários gerados foram agricultura, mata nativa e pastagem. A bacia está localizada no sul do Brasil e possui uma área de drenagem de 30,74 km². Na etapa de calibração, obteve-se coeficente de eficiência Nash-Sutcliffe mensais de 0,82 para escoamento e 0,83 para sedimento. O cenário mata nativa apresentou o maior decréscimo na vazão média, em relação ao cenário atual, cerca de 8,70%. O cenário agricultura produziu a maior taxa de produção de sedimentos, aproximadamente 3 vezes maior que o cenário atual.Observou-se que alterações no uso do solo impactam o regime e a disponibilidade hídrica da bacia.

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

Collaboration between SCK·CEN and JAEA for partitioning and transmutation through accelerator-driven system

International Nuclear Information System (INIS)

2017-03-01

This technical report reviews Research and Development (R and D) programs for the Partitioning and Transmutation (P and T) technology through Accelerator-Driven System (ADS) at Studiecentrum voor Kernenergie/Centre d'Etude de l'Énergie Nucléaire (SCK·CEN) and Japan Atomic Energy Agency (JAEA). The results obtained in the present Collaboration Arrangement between the two organizations for the ADS are also summarized, and possible further collaborations and mutual realizations in the future are sketched. (author)

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 �

NEAR: Low-mass Planets in α Cen with VISIR

Science.gov (United States)

Kasper, M.; Arsenault, R.; Käufl, H.-U.; Jakob, G.; Fuenteseca, E.; Riquelme, M.; Siebenmorgen, R.; Sterzik, M.; Zins, G.; Ageorges, N.; Gutruf, S.; Reutlinger, A.; Kampf, D.; Absil, O.; Carlomagno, B.; Guyon, O.; Klupar, P.; Mawet, D.; Ruane, G.; Karlsson, M.; Pantin, E.; Dohlen, K.

2017-09-01

ESO, in collaboration with the Breakthrough Initiatives, is working to modify the Very Large Telescope mid-IR imager (VISIR) to greatly enhance its ability to search for potentially habitable planets around both components of the binary Alpha Centauri, part of the closest stellar system to the Earth. Much of the funding for the NEAR (New Earths in the Alpha Cen Region) project is provided by the Breakthrough Initiatives, and ESO mostly provides staff and observing time. The concept combines adaptive optics using the deformable secondary mirror at Unit Telescope 4, a new annular groove phase mask (AGPM) coronagraph optimised for the most sensitive spectral bandpass in the N-band, and a novel internal chopper system for noise filtering based on a concept for longer wavelengths invented by the microwave pioneer Robert Dicke. The NEAR experiment is relevant to the mid-infrared METIS instrument on the Extremely Large Telescope, as the knowledge gained and proof of concept will be transferable.

SCK•CEN Academy for Nuclear Science and Technology: Education and training activities

International Nuclear Information System (INIS)

Coeck, M.; Govers, K.

2017-01-01

1952: cradle of nuclear research, applications and energy development in Belgium > 60 years later: international player in the field of nuclear R&D. Understanding the benefits and risks of radioactivity requires . Scientific and technical insight and training. An insight in the context and a sense for the societal and philosophical aspects of the situation. There has been a Cooperation between technical universities, SCK•CEN and IRE in In Dutch and French. Policy support on E&T matters and international collaborations. EC Framework programs, Horizon 2020, expert groups of IAEA, OECD. IAEA CRP L53003 ''Sustainable education in nuclear science and technology'' (best practices applied by academia to address schools and society)

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

International Nuclear Information System (INIS)

Turcanu, C.; Perko, T.; Schroeder, J.

2011-01-01

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.

The OB run-away stars from Sco-Cen and Orion reviewed

International Nuclear Information System (INIS)

Blaauw, A.

1989-01-01

The author studies the past paths of the run-away star Zeta Oph from the OB association Sco-Cen, and of the run-away stars AE Aur, Mu Col and 53 Ari from the OB association Ori OB1, in connection with the question of the origin of these high velocities. Should the binary-hypothesis be adhered to (supernova explosion of one of the components) or, perhaps, dynamical evolution in young, dense clusters offer a clue to this phenomenon? It is shown that the latter hypothesis is very unlikely to apply to Zeta Oph. For the run-away stars from Orion conclusive evidence may well be obtained in the course of the next decade, from improved accuracy of the proper motions

An overview of SCK-CEN's technological research for the treatment of tritiated waste

International Nuclear Information System (INIS)

Braet, J.; Bruggeman, A.; Vanderbiesen, S.

2004-01-01

The production of fusion energy involves the use of huge amounts of tritium, of the order of 4 x 10 19 Bq/Gwe.a. Therefore operation and dismantling of test installations and future commercial fusion reactors are not possible without the production of tritiated waste. Various categories of tritiated waste are and will be produced which require different detritiation techniques to lower the initial tritium content in the samples and to allow final waste disposal of the partly detritiated material and of all by-products generated in the processes. The current internationally adopted strategy is to convert all kinds of tritiated waste into tritiated water, which can then be treated in one water detritiation installation. Since several years SCK-CEN has been developing techniques for the treatment of tritiated waste. Amongst them technologies for the treatment of tritiated organic liquids, surface contaminated metals, contaminated concrete and most importantly water detritiation. The so-called liquid phase catalytic exchange for water detritiation requires an efficient catalyst that should furthermore be hydrophobic because of the low solubility and hence slow diffusion of hydrogen in the water layer that covers normal catalysts. In the past SCK-CEN invented and developed such a catalyst which has recently been optimized and tested in a bench scale installation. To confirm the performances of our improved catalyst for a longer period of time and in a longer column, we are now doing tests in a 2 meter high trickle bed reactor and the endurance of the catalyst is being tested at ICSI. Using a good performing catalyst, LPCE will be, in combination with electrolysis, a technically and economically sound technology for water detritiation. Other R and D focuses on the development of a system do decontaminate surface contaminated metals and concrete using superheated steam. The resulting water can in its turn be treated in a water detritiation installation. For the purpose of

Managing Nuclear Knowledge: a challenge for SCK-CEN

International Nuclear Information System (INIS)

Ruyssen, M.-L.

2005-01-01

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

On the radial distribution of white dwarfs in the Galactic globular cluster omega Cen

Science.gov (United States)

Calamida, A.; Corsi, C. E.; Bono, G.; Stetson, P. B.; Prada Moroni, P. G.; Degl'Innocenti, S.; Ferraro, I.; Iannicola, G.; Koester, D.; Pulone, L.; Monelli, M.; Amico, P.; Buonanno, R.; Freyhammer, L. M.; Marchetti, E.; Nonino, M.; Romaniello, M.

We present deep and accurate photometry (F435W, F625W, F658N) of the Galactic Globular Cluster omega Cen collected with the Advanced Camera for Surveys (ACS) on board the Hubble Space Telescope (HST). We identified ≈ 6,500 white dwarf (WD) candidates and compared their radial distribution with that of Main Sequence (MS) stars. We found a mild evidence that young WDs ( 0.1 ≲ t ≲ 0.6 Gyr) are less centrally concentrated when compared to MS stars in the magnitude range 25 < F435W < 26.5.

NGC 3628-UCD1:A possible $ω$ Cen Analog Embedded in a Stellar Stream

OpenAIRE

Jennings, Zachary G.; Romanowsky, Aaron J.; 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\\time...

A Bayesian approach to the modelling of α Cen A

DEFF Research Database (Denmark)

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

2012-01-01

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 that MCMC...... methods become efficient with respect to more classical grid-based strategies when the number of parameters increases. The results of our MCMC algorithm allow us to derive estimates for the stellar parameters and robust uncertainties thanks to the statistical analysis of the posterior 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 importance...

The Standard Temperature Calibration Center of the CEN Saclay

International Nuclear Information System (INIS)

Liermann, J.

1978-01-01

The first part of this article describes the instruments available at the Standard Temperature Calibration Center of the CEN Saclay. At the moment the Center has been approved by the BNM to make calibrations between 0 and 1050 0 C, but the Center has recently developed some ovens which will allow calibrations up to 2000 0 C. The Center can also perform thermal and mechanical tests on detector components under the influence of external factors. The second part concerns the development of platinum-resistance high temperature thermometer. The calibrations by comparison between 0 and 1000 0 C are, at the moment, made by using platinum resistance thermometer as a reference up to 630 0 C and a platinum-rhodied/platinum thermocouple above 630 0 C. The use of only one reference could represent for a calibration center a great improvement. For this reason a platinum-resistance high temperature thermometer has been developed. Great care was taken during the conceptual design and during the selection and the assembly of each component [fr

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

DEFF Research Database (Denmark)

Olesen, Bjarne W.; de Carli, Michele

2011-01-01

According to the Energy Performance of Buildings Directive (EPBD) all new European buildings (residential, commercial, industrial, etc.) must since 2006 have an energy declaration based on the calculated energy performance of the building, including heating, ventilating, cooling and lighting syst......–20% of the building energy demand. The additional loss depends on the type of heat emitter, type of control, pump and boiler. Keywords: Heating systems; CEN standards; Energy performance; Calculation methods......According to the Energy Performance of Buildings Directive (EPBD) all new European buildings (residential, commercial, industrial, etc.) must since 2006 have an energy declaration based on the calculated energy performance of the building, including heating, ventilating, cooling and lighting...... systems. This energy declaration must refer to the primary energy or CO2 emissions. The European Organization for Standardization (CEN) has prepared a series of standards for energy performance calculations for buildings and systems. This paper presents related standards for heating systems. The relevant...

Quality Assurance in Nuclear Fuel Research at the Laboratory of High- and Medium-level Activity at SCK-CEN

Energy Technology Data Exchange (ETDEWEB)

Sannen, L.; Gys, A.; Verwerft, M

1999-10-01

Quality assurance in nuclear fuel research demands specific calibration and validation methodologies. Indeed the analytical experiments in hot-cells on highly radioactive objects are non-standard and many times unique. The standards and validation methods developed for and applied to the main nuclear fuel research experiments in the hot laboratories of the Belgian Nuclear Research Centre SCK-CEN are outlined.

Quality Assurance in Nuclear Fuel Research at the Laboratory of High- and Medium-level Activity at SCK-CEN

International Nuclear Information System (INIS)

Sannen, L.; Gys, A.; Verwerft, M.

1999-10-01

Quality assurance in nuclear fuel research demands specific calibration and validation methodologies. Indeed the analytical experiments in hot-cells on highly radioactive objects are non-standard and many times unique. The standards and validation methods developed for and applied to the main nuclear fuel research experiments in the hot laboratories of the Belgian Nuclear Research Centre SCK-CEN are outlined

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.

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

Energy Technology Data Exchange (ETDEWEB)

Kundu, Esha [Tata Institute of Fundamental Research, Homi Bhabha Road, Colaba, Mumbai 400005 (India); Gupta, Nayantara, E-mail: esha.kundu@gmail.com, E-mail: nayan@rri.res.in [Raman Research Institute, Sadashiva Nagar, Bangalore 560080 (India)

2014-04-01

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 × 10{sup 43} erg/sec.

On the nature of the ultraluminous X-ray transient in Cen~A (NGC 5128)

OpenAIRE

Ghosh, Kajal K.; Finger, Mark H.; Swartz, Douglas A.; Tennant, Allyn F.; Wu, Kinwah

2005-01-01

We combine 9 ROSAT, 9 Chandra, and 2 XMM-Newton observations of the Cen~A galaxy to obtain the X-ray light curve of 1RXH J132519.8-430312 (=CXOU J132519.9$-$430317) spanning 1990 to 2003. The source reached a peak 0.1-2.4 keV flux F_X>10^{-12} ergs cm^{-2} s^{-1} during a 10~day span in 1995 July. The inferred peak isotropic luminosity of the source therefore exceeded 3 10^{39} ergs s^{-1}, which places the source in the class of ultra-luminous X-ray sources. Coherent pulsations at 13.264 Hz ...

Cenário epidemiológico de morbidade no ambiente de trabalho no Brasil

OpenAIRE

Graup, Susane

2012-01-01

Tese (doutorado) - Universidade Federal de Santa Catarina, Centro Tecnológico, Programa de Pós-Graduação em Engenharia de Produção, Florianópolis, 2012 As doenças do trabalho tem se tornado um problema de saúde pública, devido ao seu impacto socioeconômico, gerado a partir de prevalências que tem tomado proporções epidêmicas em todo o mundo. Diante dessas informações, o objetivo deste estudo foi estabelecer o cenário de ocorrência epidemiológica de morbidades no ambiente de trabalho no Bra...

Aplicação do CF@R e de cenários de stress no gerenciamento de riscos corporativos

Directory of Open Access Journals (Sweden)

Flávia Vital Januzzi

2012-09-01

Full Text Available O presente estudo compara dois métodos para estimação do fluxo de caixa em risco (CF@R, a saber: o modelo autorregressivo integrado com médias móveis (ARIMA e o método de vetores autorregressivos com mecanismo de correção de erros (VAR/VECM com variáveis exógenas, ambos aplicados ao contexto do setor elétrico brasileiro. O artigo contribui com a literatura existente pela aplicação de dois métodos com o objetivo de escolher as melhores estimativas de CF@R, objetivando melhorar o gerenciamento dos riscos corporativos: o backtesting das estimativas de fluxo de caixa em risco e a geração de cenários de stress, ambos usando simulação de Monte Carlo. A última técnica averiguou os impactos de cenários extremos (obtidos a partir da distribuição dos fatores de risco, tais como o racionamento de energia, sobre a estimativa futura do fluxo de caixa operacional.

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

Science.gov (United States)

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; Fukagawa, T; Gassmann, R; Gerlich, D W; Glover, D M; Gorbsky, G J; Harrison, S C; Heun, P; Hirota, T; Jansen, L E T; Karpen, G; Kops, G J P L; Lampson, M A; Lens, S M; Losada, A; Luger, K; Maiato, H; Maddox, P S; Margolis, R L; Masumoto, H; McAinsh, A D; Mellone, B G; Meraldi, P; Musacchio, A; Oegema, K; O'Neill, R J; Salmon, E D; Scott, K C; Straight, A F; Stukenberg, P T; Sullivan, B A; Sullivan, K F; Sunkel, C E; Swedlow, J R; Walczak, C E; Warburton, P E; Westermann, S; Willard, H F; Wordeman, L; Yanagida, M; Yen, T J; Yoda, K; Cleveland, D W

2013-04-01

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.

Long-term studies with the Ariel-5 asm. 1: Her X-1, Vela X-1 and Cen X-3. [periodic variations

Science.gov (United States)

Holt, S. S.; Kaluzienski, L. J.; Boldt, E. A.; Serlemitsos, P. J.

1978-01-01

Twelve hundred days of 3-6 keV X-ray data from Her X-1, Vela X-1 and Cen X-3 accumulated with the Ariel-5 all-sky monitor are interrogated. The binary periodicities of all three can be clearly observed, as can the approximately 35-d variation of Her X-1, for which we can refine the period to 34.875 plus or minus .030-d. No such longer-term periodicity less than 200-d is observed from Vela X-1. The 26.6-d low-state recurrence period for Cen X-3 previously suggested is not observed, but a 43.0-d candidate periodicity is found which may be consistent with the precession of an accretion disk in that system. The present results are illustrative of the long-term studies which can be performed on approximately 50 sources over a temporal base which will ultimately extend to at least 1800 days.

VBLUM photometry of RR Lyrae stars in ω Cen and M4

International Nuclear Information System (INIS)

DeBruijn, J.W.; Lub, J.

1987-01-01

Multicolour VBLUW photometry of RR Lyrae stars in the globular clusters M4 and ω Cen is used to derive information on reddening, blanketing, effective temperatures and gravity of these stars. The methods employed in the literature to determine the reddening of globular clusters from the UBV colours of the RR Lyrae stars are in complete agreement with the results from VBLUW photometry. The most important conclusions of the present work are: the close similarity between the RR Lyrae variables in the field and in globular clusters, and the agreement between the reddenings derived for RR Lyrae in the field and in globular clusters. This means that at least one parameter which normally is taken as a free parameter in studying globular cluster colour magnitude diagrams can be constrained very precisely

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

International Nuclear Information System (INIS)

Ruyssen, M.L.; Moons, F.; Borgermans, P.

2004-01-01

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)

Repeat Composition of CenH3-chromatin and H3K9me2-marked heterochromatin in Sugar Beet (Beta vulgaris)

Czech Academy of Sciences Publication Activity Database

Kowar, T.; Zakrzewski, F.; Macas, Jiří; Koblížková, Andrea; Viehoever, P.; Weisshaar, B.; Schmidt, T.

2016-01-01

Roč. 16, č. 120 (2016) ISSN 1471-2229 R&D Projects: GA ČR GBP501/12/G090 Institutional support: RVO:60077344 Keywords : Centromere * CenH3 * H3K9me2 * Heterochromatin Subject RIV: EB - Genetics ; Molecular Biology Impact factor: 3.964, year: 2016

Aplicando o cenário de desenvolvimento de produtos em um caso prático de capacitação profissional

Directory of Open Access Journals (Sweden)

Mundim Ana Paula Freitas

2002-01-01

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.

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.

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; Vrbová, 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: 13.649, year: 2015

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

Energy Technology Data Exchange (ETDEWEB)

Lucon, E

1999-04-01

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.

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

A macro-directive mechanism that facilitates automatic updating and processing of the contents of Electronic Healthcare Records: an extension to the CEN architecture.

Science.gov (United States)

Deftereos, S; Lambrinoudakis, C; Gritzalis, S; Georgonikou, D; Andriopoulos, P; Aessopos, A

2003-03-01

Facilitating data entry, eliminating redundant effort and providing decision support are some of the factors upon which the successful uptake of Electronic Healthcare Record (EHCR) technology is dependent. The European Standardization Committee (CEN), on the other hand, has proposed a standard EHCR architecture, which allows patient record contents to be highly diverse, customized to individual user needs; this makes their processing a challenging task and poses a demand for specially designed mechanisms. We describe the requirements for a macro-directive mechanism, pertaining to CEN-compatible EHCR software that can automate updating and processing of patient records, thus enhancing the functionality of the software. We have implemented the above-mentioned mechanism in an EHCR application that has been customized for use in the care process of patients suffering from beta-Thalassemia. The application is being used during the last two years in the Thalassemia units of four Greek hospitals, as part of their every day practice. We report on the experience we have acquired so far.

Desenho de um cenário educativo para museus com o uso de TRIZ e ACT

OpenAIRE

Ochoa Angrino, Solanlly; Pontificia Universidad Javeriana Cali; Aguilar Zambrano, Jaime Alberto; Navarro Newball, Andrés A.; Jaramillo Ramírez, Andrés; Henao Romero, Leonardo

2013-01-01

Escopo. Foi feito um trabalho interdisciplinar que utilizou a Teoria de solução de problemas inventivos (TRIZ) e o Análise cognitivo de tarefas (ACT) para orientar o desenho de um cenário de aprendizagem para um museu de ciências naturais. Metodologia. Participaram 23 pessoas: seis engenheiros de sistemas, um engenheiro industrial, um engenheiro eléctrico, dois psicólogas, um biólogo, uma bioquímica, um físico, um técnico museológico, um historiador, um guia de museu, um desenhador gráfico e ...

DETERMINANTS OF AGRO–FOOD PRICE CHANGES IN SLOVENIA DEJAVNIKI SPREMINJANJA AGROŽIVILSKIH CEN V SLOVENIJI

Directory of Open Access Journals (Sweden)

Sergej GRIČAR

2012-03-01

Full Text Available This paper investigates the impacts of the current economic developments, the Euro adoption, and input prices on the consumer food prices. The focus of the analysis is on the consumer food price developments during the Slovenian adjustments towards the European Union membership, the Euro adoption by the followed increased in consumer prices, and the current economic and financial conditions. The empirical analysis on the determinants of the consumer food prices is based on the monthly statistical data, which were obtained from the Statistical Office of Republic of Slovenia. We use three statistical methods of the analyses on the time-series data: principal component analysis, regression analysis, and linear trend analysis. We found that the Euro adoption had only short-term impact on the consumer food prices. The rise in the consumer food prices has been determined by the intermediary costs and the agricultural producers` prices. Prispevek analizira vpliv ekonomsko-finančnih gibanj, uvedbe evra in cene inputov na cene hrane in brezalkoholnih pijač (agroživilske cene. Članek se osredotoča na agroživilske cene v času slovenskega pristopa k Evropski uniji, sprejetjem evra, povečanih cen življenjskih potrebščin in trenutne gospodarske in finančne krize. Empirična analiza dejavnikov agroživilskih cen temelji na mesečnih statističnih podatkih, ki so bili pridobljeni iz Statističnega urada Republike Slovenije. Uporabljene so tri statistične metode analize časovnih serij podatkov: metoda glavnih komponent, regresijska analiza in analiza linearnega trenda. Ugotovili smo, da se agroživilske cene na srednji rok niso povečale z uvedbo evra. Agroživilske cene pa imajo statistično značilno povezanost s stroški in s cenami pridelkov pri pridelovalcih.

NEAR-INFRARED SPECTROSCOPY OF LOW-MASS X-RAY BINARIES: ACCRETION DISK CONTAMINATION AND COMPACT OBJECT MASS DETERMINATION IN V404 Cyg AND Cen X-4

International Nuclear Information System (INIS)

Khargharia, Juthika; Froning, Cynthia S.; Robinson, Edward L.

2010-01-01

We present near-infrared (NIR) broadband (0.80-2.42 μm) spectroscopy of two low-mass X-ray binaries: V404 Cyg and Cen X-4. One important parameter required in the determination of the mass of the compact objects in these systems is the binary inclination. We can determine the inclination by modeling the ellipsoidal modulations of the Roche-lobe filling donor star, but the contamination of the donor star light from other components of the binary, particularly the accretion disk, must be taken into account. To this end, we determined the donor star contribution to the infrared flux by comparing the spectra of V404 Cyg and Cen X-4 to those of various field K-stars of known spectral type. For V404 Cyg, we determined that the donor star has a spectral type of K3 III. We determined the fractional donor contribution to the NIR flux in the H and K bands as 0.98 ± 0.05 and 0.97 ± 0.09, respectively. We remodeled the H-band light curve from Sanwal et al. after correcting for the donor star contribution to obtain a new value for the binary inclination. From this, we determined the mass of the black hole in V404 Cyg to be M BH = 9.0 +0.2 -0.6 M sun . We performed the same spectral analysis for Cen X-4 and found the spectral type of the donor star to be in the range K5-M1 V. The donor star contribution in Cen X-4 is 0.94 ± 0.14 in the H band while in the K band, the accretion disk can contribute up to 10% of the infrared flux. We remodeled the H-band light curve from Shahbaz et al., again correcting for the fractional contribution of the donor star to obtain the inclination. From this, we determined the mass of the neutron star as M NS = 1.5 +0.1 -0.4 M sun . However, the masses obtained for both systems should be viewed with some caution since contemporaneous light curve and spectral data are required to obtain definitive masses.

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)

Vandenhove, H.

2011-01-01

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.

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.

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

International Nuclear Information System (INIS)

Suarez M, E.; Alonso H, C.; Diaz A, M.; Avila M, R.

1996-01-01

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

SCK-CEN Contribution to the IAEA Round Robin Exercise on WWER-440 RPV Weld Metal Irradiation Embrittlement, annealing and Re-Embrittlement. Second Progress Report

International Nuclear Information System (INIS)

Van Walle, E.; Chaouadi, R.; Scibetta, M.; Lucon, E.; Weber, M.

1999-07-01

The report gives the actual status of the contribution of the Belgian Nuclear Research Centre SCK-CEN to the IAEA Round Robin Exercise on WWER-440 RPV Weld Material Irradiation, Annealing and Re-Embrittlement. Results from the reference testing of unirradiated material as well as the results of the CHIVAS-7 experiment are discussed

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.

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.

Belgium and France join forces in measuring instrument research. SCK-CEN and CEA are jointly developing an innovative type of gamma detector

International Nuclear Information System (INIS)

Vermeeren, L.

2011-01-01

Real-time monitoring is extremely important to accurately interpret irradiation experiments in research reactors. SCK-CEN has years of expertise in developing sensors to monitor neutron flux, temperature, gamma radiation, etc. It has been collaborating with the CEA since 2006. Both partners share research and research results in the Laboratoire Commun de Instrumentation. Recently, a joint patent application was made for a new type of sensor to measure gamma rays.

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.

Novos Cenários Radiofônicos: Convergência; Jovens Digitais E Tendências

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Giovani Vieira Miranda

2016-02-01

Full Text Available O objetivo do trabalho é realizar um estudo teórico-analítico sobre a relação dos jovens integrantes da Geração Internet com as novas formas de recepção e fruição de conteúdos midiáticos, que se manifestam no atual cenário de convergência de meios, suportes e de linguagens. O artigo pretende evidenciar a relação direta desses jovens com o rádio, um veículo que persiste na plataforma analógica. Para tanto, são apresentados dados atuais de uma pesquisa empírica sobre hábitos, formas e índices de consumo, que poderão servir como referência para os processos de gestão do meio radiofônico na cidade de Bauru.

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

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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.

Eficacia del medio de cultivo CromoCen(R CC en el diagnóstico de la infección urinaria Efficacy of the CromoCen (R culture medium in the diagnosis of urinary infection

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Emilio Simón Barroso de la Cruz

2006-12-01

Full Text Available Se realizó la evaluación del desempeño con muestras clínicas de orina para determinar la eficacia del CromoCen(R CC como medio de cultivo en el diagnóstico de la infección urinaria, e identificar, con su utilización, los grupos bacterianos más frecuentes y el tiempo necesario para realizar el diagnóstico. En una muestra de 500 casos atendidos en la consulta externa de urología y realizados en el servicio de microbiología de San Antonio de los Baños, en la provincia de La Habana, en el período comprendido desde enero a junio de 2003. Se confirmó la hipótesis de trabajo: el medio de cultivo estudiado fue eficaz en el diagnóstico rápido de la infección urinaria. Desde el punto de vista ético se mantuvo la confidencialidad, se elevó la autoestima del binomio médico-paciente, y su calidad de vida desde el punto de vista bioético, por lo que se recomienda emplear este medio de cultivo en el diagnóstico rápido de la infección urinaria.The evaluation of the performance with clinical samples of urine was carried out to determine the efficacy of CromoCen(R CC as a culture medium in the diagnosis of urinary infection, and to identify with its use the most frequent bacterial groups and the time necessary to make the diagnosis. In a sample of 500 cases seen at the aoutpatient department of urology and analyzed at the microbiology service of San Antonio de los Baños, in the province of Havana, from January to June, 2003, it was confirmed the working hypothesis: the studied culture medium was efficient for the rapid diagnosis of urinary infection. From the ethical point of view, the reliability was maintained, and the self-steem of the physician-patient binomial, as well as the quality of life of the patient from the bioethical view increased. That's why, it is recommended to use this culture medium in the rapid diagnosis of the urinary infection.

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

International Nuclear Information System (INIS)

De Cort, R.; De Cock, R.; Billiau, R.; Proost, J.

1979-01-01

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)

Using a Community-Engaged Research (CEnR) approach to develop and pilot a photo grid method to gain insights into early child health and development in a socio-economic disadvantaged community.

Science.gov (United States)

Lowrie, Emma; Tyrrell-Smith, Rachel

2017-01-01

This paper reports on the use of a Community-Engaged Research (CEnR) approach to develop a new research tool to involve members of the community in thinking about priorities for early child health and development in a deprived area of the UK. The CEnR approach involves researchers, professionals and members of the public working together during all stages of research and development.Researchers used a phased approach to the development of a Photo Grid tool including reviewing tools which could be used for community engagement, and testing the new tool based on feedback from workshops with local early years professionals and parents of young children.The Photo Grid tool is a flat square grid on which photo cards can be placed. Participants were asked to pace at the top of the grid the photos they considered most important for early child health and development, working down to the less important ones at the bottom. The findings showed that the resulting Photo Grid tool was a useful and successful method of engaging with the local community. The evidence for this is the high numbers of participants who completed a pilot study and who provided feedback on the method. By involving community members throughout the research process, it was possible to develop a method that would be acceptable to the local population, thus decreasing the likelihood of a lack of engagement. The success of the tool is therefore particularly encouraging as it engages "seldom heard voices," such as those with low literacy. The aim of this research was to consult with professionals and parents to develop a new research toolkit (Photo Grid), to understand community assets and priorities in relation to early child health and development in Blackpool, a socio-economic disadvantaged community. A Community-Engaged Research (CEnR) approach was used to consult with community members. This paper describes the process of using a CEnR approach in developing a Photo Grid toolkit. A phased CEnR approach

Modelagem dos Recursos Eólicos sobre Moçambique Considerando um Cenário de Mudanças Climáticas

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Emerson Mariano da Silva

Full Text Available Resumo Este trabalho apresenta uma aplicação da técnica de redução de escala (dynamic downscaling usando-se o modelo regional RAMS6.0 (Regional Atmospheric Modelling System forçado por campos de saída do modelo de circulação global HadGEM2-ES, com objetivo de estimar o potencial eólico nas regiões de Moçambique considerando um cenário de mudanças climáticas definido pelo IPCC. Os resultados mostraram desempenho satisfatório do modelo RAMS6.0 na reprodução de padrões médios de campos dos ventos obtidos nas reanálises do CFSR e MERRA durante o período de 1985-2005. Os campos de ventos simulados a 10, 50 e 100 m de altura, sob condições do cenário de emissão RCP8.5 do IPCC, para o período de 2079-2099, mostraram-se com valores superiores em relação aos campos de ventos para o período de 1985-2005. Além disso, há evidências de um aumento na densidade de energia eólica nas regiões de Moçambique para o período de 2079-2099, particularmente durante o inverno nas regiões centro e sul do país.

Cen?rio das Pol?ticas P?blicas de fixa??o e provimento de profissionais de sa?de no Amazonas, 1970 - 1990

OpenAIRE

Barbosa, Erica Lima

2016-01-01

A presente Disserta??o ? resultado da pesquisa de cunho hist?rico, que teve como objetivo analisar o cen?rio das pol?ticas p?blicas de fixa??o e provimento de profissionais de Sa?de no Amazonas no per?odo de 1970 a 1990. A problematiza??o est? desmembrada nas seguintes quest?es: Quais as estrat?gias de fixa??o e provimentos de profissionais de sa?de foram desenvolvidas no Amazonas no per?odo entre 1970 a 1990? Como as pol?ticas de desenvolvimento de recursos humanos foram articuladas com as p...

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)

Lucon, E.

2005-11-01

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)

Cenário petrolífero: sua evolução, principais produtores e tecnologias

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Marcela Taiane Schiavi

2015-05-01

Full Text Available O setor Petrolífero é um dos maiores e mais amplos empreendedores do mundo. E vem crescendo a cada ano, com novas tecnologias e novas perspectivas de inovação. Esta pesquisa envolve os seguintes objetivos: apresentar um breve histórico da origem do petróleo e seu desenvolvimento com o passar dos anos; apresentar uma análise do segmento petrolífero, indicando quais são os principais países que detém as maiores reservas e as maiores empresas petrolíferas do mundo; e, uma análise de patentes onde apresenta-se o número anual de documentos de patentes na respectiva área em um determinado período, as áreas de foco tecnológico e as empresas que mais depositam documentos de patentes neste setor no Brasil. O método de pesquisa constituiu na seleção de artigos para que se tornasse possível à contextualização da história do petróleo e também na seleção de dados estatísticos que indicassem sua evolução através de tabelas e gráficos que comprovasse a produção e o desenvolvimento no decorrer dos anos. Uma analise na base de dados da Derwent Innovation Index julgou-se necessária e importante na utilização de documentos de patentes como uma fonte de informação, pois registram os avanços tecnológicos. Com o estabelecimento de uma estratégia de busca no período de 1994-2013 foi possível destacar a Procter & Gamble, empresa americana, como sendo a empresa que mais deposita documentos de patentes dentro desta área no Brasil. Ainda apresenta o cenário petrolífero e os avanços tecnológicos nos últimos anos. Quanto às descobertas de reservas petrolíferas recentes tanto no Brasil quanto em outros países a tendência é de que esta área se fortaleça implementando suas tecnologias e aumentando suas reservas produtivas e se destacando cada vez mais no cenário mundial.

New Statute of the Nuclear Energy Research Centre (CEN), copy of Act No. 1429, amended by Act No. 1145 and Act No. 5652, respectively published in the annexes of the Belgian Official Gazette of 28 March 1963, 3 March 1966 and 17 September 1970

International Nuclear Information System (INIS)

1963-01-01

The Statute of the Belgian Nuclear Research Centre (CEN) lays down the objects of the Centre which consist of undertaking research on the applications of nuclear energy, promoting scientific and technical studies of such applications, carrying out advanced technological research on other topics in the country's scientific and technological programmes; and at the public authorities' request co-ordinating such research by all means available to it. The CEN is run by a Board of Directors selected by representatives of the nuclear industry, scientific and university circles as well as by the Government. The Statute also provides for the rules of procedure of the Board as well as for the Centre's budget and management under the responsibility of a Director General appointed by the Board. Finally, the CEN is declared as being an establishment created in the public interest, and any amendment to its Statute must obtain the prior approval of the King. (NEA) [fr

Os Refugiados e a fragmentaridade das normas de Direito Internacional. O cenário complexo das migrações forçadas face o cenário sócio-político atual

Directory of Open Access Journals (Sweden)

Saddam Mohamad Mohamad

2018-02-01

Full Text Available O presente trabalho tem como objeto de estudo, o direito internacional dos direitos humanos, trazendo como proposição a apresentação da fragmentaridade do direito internacional. Muito diferente das normas internas a qual regem-se por uma hierarquia normativa, em âmbito internacional não vemos a mesma coisa, ocorrendo a horizontalidade das normas, fazendo com que as normas internas de cada estado se sobreponha, muitas vezes, as leis internacionais. Tal fato acarreta em algumas restrições a jurisdição internacional, o qual será evidenciado pela problemática dos refugiados sírios na atualidade, temática de grande relevância nos últimos anos no cenário internacional pela expressiva abrangência de seus fluxos, pelo desrespeito a dignidade humana e pela crescente violência na sua contenção, apesar de sua condição de extrema vulnerabilidade. Metodologia. Adotar-se-á o método de abordagem dialético e a técnica de pesquisa bibliográfico.

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)

Van Walle, E.; Chaouadi, R.; Puzzolante, J.L.; Fabry, A.; Van de Velde, J.

1998-01-01

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

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

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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

Ma and LLFP transmutation in MTPs and ADSs: the typical SCK.CEN case of transmutations in BR2 and Myrrha. Position with respect to the global needs

International Nuclear Information System (INIS)

Raedt, Ch. de; Verboomen, B.; Aoust, Th.; Malambu, E.; Beeckmans de West-Meerbeeck, A.; Kupschus, P.; Benoit, Ph.; Ait Abderrahim, H.; Baetsle, L.H.

2001-01-01

The proposed paper indicates the performances, in the domain of the transmutation of MAs and LLFPs, of the high flux materials testing reactor BR2 located at SCK-CEN, and compares them with those of the multipurpose ADS MYRRHA, the pre-design of which is at the present time being finalized at SCK-CEN. With thermal neutron fluxes reaching 9.10 14 n/cm 2 s in thermal positions and 4.10 14 n/cm 2 s in the reactor core and, in the latter position, a fast flux (E>0.1 MeV) of 7.10 14 n/cm 2 s, BR2 has a transmutation throughput of the order of 1.5 kg Np+Am per 200 EFPD. This capacity can be used for investigating at the technological scale the transmutation of MAs and LLFPs in a thermal neutron spectrum with a high contribution of epithermal and fast neutrons. The metallurgical behaviour of the targets can hence be studied. In MYRRHA, higher fast fluxes are expected to be attained in irradiation positions near the spallation source, viz fast fluxes (E>0.75 MeV) up to 10. 15 n/cm 2 s. One of the purposes of MYRRHA is therefore its utilisation for the investigation of actinide transmutation feasibility with ADSs. (author)

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

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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.

O fenômeno da globalização e o novo cenário dos atores das relações internacionais

OpenAIRE

Olsson, Giovanni

2001-01-01

Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Ciências Jurídicas O presente estudo envolve-se com temas de Relações Internacionais e Globalização. Na sua abordagem, procura analisar de que forma as relações internacionais estão sendo atingidas pelo fenômeno da globalização no mundo contemporâneo, com as alterações no cenário dos seus atores e na redefinição da sociedade internacional, em vista da emergência de uma sociedade mundializada. A investigação científ...

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

International Nuclear Information System (INIS)

Coeck, Michèle

2014-01-01

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

Cenários prospectivos das organizações de mídia impressa e horizontes para a carreira de jornalista: tensões, responsabilidades e mutações estruturais

Directory of Open Access Journals (Sweden)

Felipe Arruda Mortara

2014-04-01

Full Text Available http://dx.doi.org/10.5007/2178-4582.2014v48n1p124 Este artigo tem como objetivo compreender, por meio da teoria de cenários, quais podem ser as atribuições e responsabilidades que farão parte do cotidiano de trabalho de um profissional do jornalismo impresso no Brasil e em quais contextos de estrutura organizacional e demanda por conteúdo possivelmente exercerá sua atividade dentro de cinco anos. Com base nas principais teorias de carreira e suas alternativas, construiu-se ensaio teórico sobre as prospecções das tensões que marcam a relação entre jornalistas e empresas de mídia. A compreensão do histórico destas relações, bem como o das relações de consumo como cultura social, somada a um entendimento do contexto em que vivemos, reunirá elementos e hipóteses que sinalizem por quais caminhos seguem demanda e oferta de informação. Paralelamente, apresenta um panorama das transformações na carreira do jornalista. A partir destes indicativos, foram construídos possíveis cenários de tarefas e ambientes em que os profissionais do jornalismo atuarão.

Cenários típicos de lesões decorrentes de acidentes de trabalho na indústria madeireira Scenarios of typical occupational injuries in lumber industry

Directory of Open Access Journals (Sweden)

Vidal de Souza

2002-12-01

Full Text Available OBJETIVO: Descrever os cenários das lesões decorrentes de acidentes de trabalho na indústria madeireira. MÉTODOS: Foram identificados todos os acidentes típicos entre janeiro de 1997 e janeiro de 1999, notificados a um dos postos do Instituto Nacional de Seguro Social, localizado em Lages, Santa Catarina. Trata-se de um estudo transversal descritivo em que foram analisadas 254 Comunicações de Acidentes de Trabalho (CAT. Aplicou-se análise multivariada com Análise Fatorial de Correspondência Múltipla (AFCM, Classificação Hierárquica de Ascendência (CHA e Classificação Não Hierárquica de Partição (CNHP para a identificação dos cenários típicos de lesões decorrentes de acidentes. RESULTADOS: Cinco cenários de lesões decorrentes de acidentes foram agrupados: 1 queda do trabalhador, 40 casos; 2 sobreesforço ao erguer ou empurrar um objeto, 5 casos; 3 objetos ou peças que tenham caído ou saltado de máquinas em movimento, 76 casos; 4 esmagamento de partes moles, 56 casos; e 5 contato com serras em movimento, 77 casos. CONCLUSÕES: A utilização de análise multivariada permitiu definir as lesões mais típicas relacionadas a determinados tipos de acidentes, bem como apreender as circunstâncias em que ocorreram.OBJECTIVE: To describe the scenarios of typical occupational injuries in lumber industry. METHODS: All occupational injuries reported to a INSS (National Institute of Social Security center in Lages, SC, Brazil from January 1997 to January 1999 were identified. A descriptive cross-sectional study was carried out and 254 injury report forms were analyzed. Multivariate analysis was conducted using Factorial Analysis of Correspondence (FAC, Hierarchical Ascendant Classification (HAC and Partition to identify the scenarios of typical occupational injuries. RESULTS: There were identified five scenarios of occupational injuries: 1 workers' falls (40 reports; 2 overexertion in lifting or pushing objects (5 reports; 3

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

Energy Technology Data Exchange (ETDEWEB)

Neerdael, Bernard; Put, Martin [Centre d`Etude de l`Energie Nucleaire, Mol (BBE)

1994-12-31

The studies at CEN-SCK related to the R and D of geological disposal are performed within the research unit `waste and disposal` which also deals with the characterization of waste packages and their compatibility with host clay. The in situ test program developed by the underground research facility is shown. The in situ corrosion and leaching test, the combined radiation/heating test CERBERUS, the in situ migration experiment and the geotechnical survey on the gallery structures and their surrounding clay have been continued, and the main achievements until mid 1993 are reported. New actions have been started since 1991 related to hydrogeological modeling, the migration of gas in clay and the `PARCLAY` demonstration test. Besides the periodic measurement of water level in hydrological observation well network, the critical review of the previous regional hydrological modeling has been carried out. Migration studies were extended to the permeation of hydrogen, and the MEGAS project of the modeling and experiment of gas migration was started. Four main experiments, ARCHIMEDES, PHEBUS, BACCHUS 2 and ATLAS, as the international efforts are explained. (K.I.).

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

Efeitos das estratégias de ensino-aprendizagem: um ensaio sobre as respostas do corpo que aprende no cenário tutorial Effects of teaching strategies-learning: an essay on the responses of body learning as scenario tutorial

Directory of Open Access Journals (Sweden)

Paulo Sergio da Silva

2016-07-01

Full Text Available Objetivo: Descrever as estratégias de ensino utilizadas pelos docentes no cenário tutorial. Método: Trata-se de um estudo qualitativo realizado em um Centro Universitário Particular localizado na região serrana do estado do Rio de Janeiro. Os sujeitos-objeto deste estudo foram dezesseis estudantes regularmente matriculados no primeiro semestre de 2012 e a análise foi realizada mediante a disposição dos conteúdos. Resultados: Definimos a seguinte categoria: Os efeitos das estratégias de ensinar no corpo que aprende. Trata dos efeitos nos corpos dos estudantes a partir de estratégias pedagógicas utilizadas nos cenário tutorial. Conclusão: No plano das formas de ensinar, os estudantes trazem como fundamental as características de saber fazer, que estiveram atreladas as experiências e vivências do professor, descoberta de singularidades, potencialidades e deficiências deles, além do uso de desenhos.

Psicologia e Democracia em um Cenário de Cidade como Campo em Disputa

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Elisa Martins

Full Text Available Resumo: No Rio de Janeiro, o planejamento urbano e o direito à cidade vêm sofrendo contundentes interferências do modelo neoliberal, colocando em conflito os interesses de quem habita o território e os das grandes corporações do capital financeiro. Tais interferências agravam problemas já conhecidos dos cariocas, como negação de direitos básicos, criminalização da pobreza e aumento do custo de vida. No presente texto, trabalhou-se com a ideia de cidade não como palco de uma disputa sócio-histórica de classes ou como objeto dessa disputa, mas como o emergir da própria disputa. Interessa-nos analisar e discutir os efeitos desse confronto, além de elaborar formas de resistência e de superação das desigualdades que marcam a experiência humana na realidade social brasileira. Nesse cenário, faz-se necessária a construção de outro modo de fazer Psicologia, comprometido em reunir elementos de ação capazes de intervir na realidade que vem sendo imposta a partir da perspectiva de cidade-negócio. Uma Psicologia que tenha a luta e participação política como metas para uma experiência democrática de sociedade, consolidando dessa forma o compromisso social como norteador da profissão.

Proyecto RAILCEN: estudio de la evolución de un incendio en vehículo ferroviario provocado por materiales de interiorismo de acuerdo a CEN / TS 45545-2

OpenAIRE

López, Marta; Martínez, Izaskun; Lacasta Palacio, Ana María; Nylander, Pasi; Gallego, Emiliano

2009-01-01

La reciente aprobación de la especificación técnica CEN/TS 45545, es considerada un gran avance en lo que a requisitos de seguridad en ferrocarriles se refiere, debido a la importante necesidad actual de unificación de exigencias frente a incendio originado por la cada vez mayor red de tráfico ferroviario entre diferentes países de la UE. Así, a nivel nacional, dos empresas de importante participación en el sector como son FAINSA S.A. (fabricante de asientos) y Patentes TALGO S...

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

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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

Complete genomic and transcriptional landscape analysis using third-generation sequencing: a case study of Saccharomyces cerevisiae CEN.PK113-7D

DEFF Research Database (Denmark)

Jenjaroenpun, Piroon; Wongsurawat, Thidathip; Pereira, Rui

2018-01-01

Completion of eukaryal genomes can be difficult task with the highly repetitive sequences along the chromosomes and short read lengths of secondgeneration sequencing. Saccharomyces cerevisiae strain CEN. PK113-7D, widely used as a model organism and a cell factory, was selected for this study...... to demonstrate the superior capability of very long sequence reads for de novo genome assembly. We generated long reads using two common third-generation sequencing technologies (Oxford Nanopore Technology (ONT) and Pacific Biosciences (PacBio)) and used short reads obtained using Illumina sequencing for error...... correction. Assembly of the reads derived from all three technologies resulted in complete sequences for all 16 yeast chromosomes, as well as themitochondrial chromosome, in one step. Further, we identified three types of DNA methylation (5mC, 4mC and 6mA). Comparison between the reference strain S288C...

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.

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...

Reference terms for the capitalisation study of Mali domestic biogas (BFM) and Climate and Energy in Western Africa (CEnAO) projects. Projects financed by the FISONG arrangement of the French Agency for Development (AFD)

International Nuclear Information System (INIS)

2014-01-01

The BFM project (or domestic biogas project in Mali) project concerns the installation of 100 bio-digesters in Mali, and the CenAO one concerns the building up of wood-energy sector in Bamako. This report first presents these both projects, and then presents the capitalisation study, its objectives (global and specific objectives). It presents the study organisation: method and approach (preliminary phase, realisation, conclusion and recommendation), required abilities for the assessment, duration, documents to be produced

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

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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.

First results of the deployment of a SoLid detector module at the SCK•CEN BR2 reactor

Science.gov (United States)

Ryder, N.

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 three years. In this talk the novel detector design is explained and initial detector performance results from the module level deployment are presented along with an estimation of the physics reach of the next phase.

SoLid: An innovative anti-neutrino detector for searching oscillations at the SCK•CEN BR2 reactor

Science.gov (United States)

Abreu, Yamiel; SoLid Collaboration

2017-02-01

The SoLid experiment intends to search for active-to-sterile anti-neutrino oscillations at a very short baseline from the SCK•CEN BR2 research reactor (Mol, Belgium). A novel detector approach to measure reactor anti-neutrinos was developed based on an innovative sandwich of composite polyvinyl-toluene and 6LiF:ZnS(Ag) scintillators. The system is highly segmented and read out by a network of wavelength shifting fibers and SiPM. High experimental sensitivity can be achieved compared to other standard technologies thanks to the combination of high granularity, good neutron-gamma discrimination using 6LiF:ZnS(Ag) scintillator and precise localisation of the Inverse Beta Decay products. This technology can be considered as a new generation of an anti-neutrino detector. This compact system requires limited passive shielding and relies on spatial topology to determine the different classes of backgrounds. We will describe the principle of detection and the detector design. Particular focus on the neutron discrimination will be made, as well as on the capability to use cosmic muons for channel equalisation and energy calibration. The performance of the first 288 kg SoLid module (SM1), based on the data taken at BR2 from February to September 2015, will be presented. We will conclude with the next phase, which will start in 2016, and the future plans of the experiment.

SoLid: An innovative anti-neutrino detector for searching oscillations at the SCK• CEN BR2 reactor

Energy Technology Data Exchange (ETDEWEB)

Abreu, Yamiel, E-mail: yamiel.abreu@uantwerpen.be

2017-02-11

The SoLid experiment intends to search for active-to-sterile anti-neutrino oscillations at a very short baseline from the SCK• CEN BR2 research reactor (Mol, Belgium). A novel detector approach to measure reactor anti-neutrinos was developed based on an innovative sandwich of composite polyvinyl-toluene and {sup 6}LiF:ZnS(Ag) scintillators. The system is highly segmented and read out by a network of wavelength shifting fibers and SiPM. High experimental sensitivity can be achieved compared to other standard technologies thanks to the combination of high granularity, good neutron–gamma discrimination using {sup 6}LiF:ZnS(Ag) scintillator and precise localisation of the Inverse Beta Decay products. This technology can be considered as a new generation of an anti-neutrino detector. This compact system requires limited passive shielding and relies on spatial topology to determine the different classes of backgrounds. We will describe the principle of detection and the detector design. Particular focus on the neutron discrimination will be made, as well as on the capability to use cosmic muons for channel equalisation and energy calibration. The performance of the first 288 kg SoLid module (SM1), based on the data taken at BR2 from February to September 2015, will be presented. We will conclude with the next phase, which will start in 2016, and the future plans of the experiment.

SoLid: Search for Oscillations with Lithium-6 Detector at the SCK-CEN BR2 reactor

Science.gov (United States)

Ban, G.; Beaumont, W.; Buhour, J. M.; Coupé, B.; Cucoanes, A. S.; D'Hondt, J.; Durand, D.; Fallot, M.; Fresneau, S.; Giot, L.; Guillon, B.; Guilloux, G.; Janssen, X.; Kalcheva, S.; Koonen, E.; Labare, M.; Moortgat, C.; Pronost, G.; Raes, L.; Ryckbosch, D.; Ryder, N.; Shitov, Y.; Vacheret, A.; Van Mulders, P.; Van Remortel, N.; Weber, A.; Yermia, F.

2016-04-01

Sterile neutrinos have been considered as a possible explanation for the recent reactor and Gallium anomalies arising from reanalysis of reactor flux and calibration data of previous neutrino experiments. A way to test this hypothesis is to look for distortions of the anti-neutrino energy caused by oscillation from active to sterile neutrino at close stand-off (˜ 6- 8m) of a compact reactor core. Due to the low rate of anti-neutrino interactions the main challenge in such measurement is to control the high level of gamma rays and neutron background. The SoLid experiment is a proposal to search for active-to-sterile anti-neutrino oscillation at very short baseline of the SCK•CEN BR2 research reactor. This experiment uses a novel approach to detect anti-neutrino with a highly segmented detector based on Lithium-6. With the combination of high granularity, high neutron-gamma discrimination using 6LiF:ZnS(Ag) and precise localization of the Inverse Beta Decay products, a better experimental sensitivity can be achieved compared to other state-of-the-art technology. This compact system requires minimum passive shielding allowing for very close stand off to the reactor. The experimental set up of the SoLid experiment and the BR2 reactor will be presented. The new principle of neutrino detection and the detector design with expected performance will be described. The expected sensitivity to new oscillations of the SoLid detector as well as the first measurements made with the 8 kg prototype detector deployed at the BR2 reactor in 2013-2014 will be reported.

The effect of stellar-mass black holes on the central kinematics of ω Cen: a cautionary tale for IMBH interpretations

Science.gov (United States)

Zocchi, Alice; Gieles, Mark; Hénault-Brunet, Vincent

2018-06-01

The search for intermediate-mass black holes (IMBHs) in the centre of globular clusters is often based on the observation of a central cusp in the surface brightness profile and a rise towards the centre in the velocity dispersion profiles. Similar signatures, however, could result from other effects, that need to be taken into account in order to determine the presence (or the absence) of an IMBH in these stellar systems. Following our previous exploration of the role of radial anisotropy in shaping these observational signatures, we analyse here the effects produced by the presence of a population of centrally concentrated stellar-mass black holes. We fit dynamical models to ω Cen data, and we show that models with ˜5% of their mass in black holes (consistent with ˜100% retention fraction after natal kicks) can reproduce the data. When simultaneously considering both radial anisotropy and mass segregation, the best-fit model includes a smaller population of remnants, and a less extreme degree of anisotropy with respect to the models that include only one of these features. These results underline that before conclusions about putative IMBHs can be made, the effects of stellar-mass black holes and radial anisotropy need to be properly accounted for.

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

International Nuclear Information System (INIS)

Helton, L. Andrew; Woodward, Charles E.; Gehrz, Robert D.; Walter, Frederick M.; Vanlandingham, Karen; Schwarz, Greg J.; Evans, Aneurin; Ness, Jan-Uwe; Geballe, Thomas R.; Greenhouse, Matthew; Krautter, Joachim; Liller, William; Lynch, David K.; Rudy, Richard J.; Shore, Steven N.; Starrfield, Sumner; Truran, Jim

2010-01-01

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 o fe N ne A o 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 M g = (1.6 ± 0.2) x 10 -4 M sun . 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, M d , of order (0.2-3.7) x 10 -7 M sun , 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.

Fabrication of Ce/N co-doped TiO_2/diatomite granule catalyst and its improved visible-light-driven photoactivity

International Nuclear Information System (INIS)

Chen, Yan; Liu, Kuiren

2017-01-01

Highlights: • Ce/N co-doped TiO_2/diatomite granule (CNTD-G) was prepared via sol-gel method. • The optimal doping amount of Ce was determined. • The effects of impurity ions on photodegradation process were studied. • The intermediates generated during photodegradation process were deduced. • The mechanism of photodegradation process was proposed. - Abstract: Eliminating antibiotic remnants in aquatic environment has become one of the hottest topics among current research works. Thus, we prepared Ce, N co-doped TiO_2/diatomite granule (CNTD-G) catalyst to provide a new method. As one typical antibiotics, oxytetracycline (OTC) was selected as the target pollutant to be degradated under visible light irradiation. The carrier diatomite helped the spread of TiO_2 nanoparticles onto its surface, and inhibited their agglomeration. The synergy of Ce and N dopants highly improved the visible-light-driven photoactivity of TiO_2. The optimal doping amount and degradation conditions were determined. Besides, the effects of impurity ions were also investigated, including cations: Ca"2"+, Mg"2"+; or anions: NO_3"−, SO_4"2"− and PO_4"3"−. The intermediates generated during degradation process were studied, and the mechanism of the photodegradation process was proposed. CNTD-G could be easily collected from the reactor, and showed excellent recyclability.

3D geomechanical modeling and numerical simulation of in-situ stress fields in shale reservoirs: A case study of the lower Cambrian Niutitang formation in the Cen'gong block, South China

Science.gov (United States)

Liu, Jingshou; Ding, Wenlong; Yang, Haimeng; Wang, Ruyue; Yin, Shuai; Li, Ang; Fu, Fuquan

2017-08-01

An analysis of the in-situ state of stress in a shale reservoir was performed based on comprehensive information about the subsurface properties from wellbores established during the development of an oil and gas field. Industrial-level shale gas production has occurred in the Niutitang formation of the lower Cambrian Cen'gong block, South China. In this study, data obtained from hydraulic fracturing, drilling-induced fractures, borehole breakout, global positioning system (GPS), and well deviation statistics have been used to determine the orientation of the maximum horizontal principal stress. Additionally, hydraulic fracturing and multi-pole array acoustic logging (XMAC) were used to determine the vertical variations in the in-situ stress magnitude. Based on logging interpretation and mechanical experiments, the spatial distributions of mechanical parameters were obtained by seismic inversion, and a 3D heterogeneous geomechanical model was established using a finite element stress analysis approach to simulate the in-situ stress fields. The effects of depth, faults, rock mechanics, and layer variations on the principal stresses, horizontal stress difference (Δσ), horizontal stress difference coefficient (Kh), and stress type coefficient (Sp) were determined. The results show that the direction of the maximum principal stress is ESE 120°. Additionally, the development zones of natural fractures appear to correlate with regions with high principal stress differences. At depths shallower than 375 m, the stress type is mainly a thrust faulting stress regime. At depths ranging from 375 to 950 m, the stress type is mainly a strike-slip faulting stress regime. When the depth is > 950 m, the stress type is mainly a normal faulting stress regime. Depth, fault orientation, and rock mechanics all affect the type of stress. The knowledge regarding the Cen'gong block is reliable and can improve borehole stability, casing set point determination, well deployment

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

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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.  

Fabrication of Ce/N co-doped TiO{sub 2}/diatomite granule catalyst and its improved visible-light-driven photoactivity

Energy Technology Data Exchange (ETDEWEB)

Chen, Yan; Liu, Kuiren, E-mail: liukr@smm.neu.edu.cn

2017-02-15

Highlights: • Ce/N co-doped TiO{sub 2}/diatomite granule (CNTD-G) was prepared via sol-gel method. • The optimal doping amount of Ce was determined. • The effects of impurity ions on photodegradation process were studied. • The intermediates generated during photodegradation process were deduced. • The mechanism of photodegradation process was proposed. - Abstract: Eliminating antibiotic remnants in aquatic environment has become one of the hottest topics among current research works. Thus, we prepared Ce, N co-doped TiO{sub 2}/diatomite granule (CNTD-G) catalyst to provide a new method. As one typical antibiotics, oxytetracycline (OTC) was selected as the target pollutant to be degradated under visible light irradiation. The carrier diatomite helped the spread of TiO{sub 2} nanoparticles onto its surface, and inhibited their agglomeration. The synergy of Ce and N dopants highly improved the visible-light-driven photoactivity of TiO{sub 2}. The optimal doping amount and degradation conditions were determined. Besides, the effects of impurity ions were also investigated, including cations: Ca{sup 2+}, Mg{sup 2+}; or anions: NO{sub 3}{sup −}, SO{sub 4}{sup 2−} and PO{sub 4}{sup 3−}. The intermediates generated during degradation process were studied, and the mechanism of the photodegradation process was proposed. CNTD-G could be easily collected from the reactor, and showed excellent recyclability.

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.

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

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Luís VIVEIROS

2015-03-01

Full Text Available 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 entanto, apesar deste objetivo, o consenso geral é que aplicação do conhecimento gerado pela Ciência do Esporte na prática ainda é incipiente. Este ensaio revisita o modelo para o desenvolvimento da Ciência do Esporte, proposto anteriormente por Bishop(1 , discute o cenário da Ciência do Esporte no Brasil e também aponta para as perspectivas futuras. As diretrizes do modelo revisitado, em conjunto com as discussões realizadas neste ensaio, podem ajudar o cientista do Esporte a desenvolver estudos aplicados nos quais os resultados poderiam ser utilizados para orientar a prática e, possivelmente, maximizar o desempenho esportivo.

Abordagem pedagógica e diversificação dos cenários de ensino médico: projetos selecionados pelo PROMED

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Lucia Maria Horta Figueiredo Goulart

Full Text Available Este trabalho analisa as principais propostas de abordagem pedagógica e diversificação de cenários do processo de ensino apresentadas pelas escolas selecionadas pelo Programa de Incentivo a Mudanças Curriculares nas Escolas de Medicina (Promed, instituído em 2002 pelos ministérios da Saúde e da Educação. Foi realizada pesquisa documental, utilizando-se roteiro com base no termo de referência do programa para a leitura dos projetos. Verificou-se que todas as escolas selecionadas já se encontravam em processo de mudança curricular por ocasião do edital Promed. Embora buscassem alcançar os objetivos apresentados pelo programa, os projetos selecionados apontaram diferentes caminhos para sua realização. Conhecer essas propostas e a maneira como se articularam entre si e com o objetivo final do Promed é de capital importância para os educadores da área de saúde envolvidos com mudanças curriculares em suas instituições, bem como para os gestores dessa área que vêm apresentando suas demandas em consonância com as necessidades de saúde da população

Projeto Uni: cenário de aprender, pensar e construir a interdisciplinaridade na prática pedagógica da Enfermagem

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Roseni Rosângela de Sena

2003-08-01

Full Text Available Investiga-se a incorporação do enfoque interdisciplinar em dois cursos de Enfermagem no Brasil, que desenvolvem o Projeto UNI. Trata-se de pesquisa qualitativa, com referencial teórico-metodológico crítico. Teve como objetivo analisar as transformações ocorridas no processo de ensino desses cursos, tendo como ênfase a interdisciplinaridade. Os dados primários foram levantados utilizando a técnica de grupo focal, junto a docentes e alunos dos cursos das escolas cenários da pesquisa. Os dados de fonte secundária foram obtidos da análise documental de currículos e de outros documentos de ensino disponíveis nessas escolas. Resultados evidenciam que os cursos estão utilizando a interdisciplinaridade como estratégia para a superação da organização do currículo por disciplina. Os docentes relatam as dificuldades do trabalho sob esse enfoque, apontando a formação biologicista como um dos determinantes dessa dificuldade. Conclui-se que a ênfase na interdisciplinaridade e no trabalho em equipe tem exigido a adoção de metodologias ativas de ensino e contribuído para a transformação do modelo de ensino de Enfermagem vigente nas universidades investigadas.

Innovations for In-Pile Measurements in the Framework of the CEA-SCK•CEN Joint Instrumentation Laboratory

Science.gov (United States)

Villard, Jean-Francois; Schyns, Marc

2010-12-01

Optimizing the life cycle of nuclear systems under safety constraints requires high-performance experimental programs to reduce uncertainties on margins and limits. In addition to improvement in modeling and simulation, innovation in instrumentation is crucial for analytical and integral experiments conducted in research reactors. The quality of nuclear research programs relies obviously on an excellent knowledge of their experimental environment which constantly calls for better online determination of neutron and gamma flux. But the combination of continuously increasing scientific requirements and new experimental domains -brought for example by Generation IV programsnecessitates also major innovations for in-pile measurements of temperature, dimensions, pressure or chemical analysis in innovative mediums. At the same time, the recent arising of a European platform around the building of the Jules Horowitz Reactor offers new opportunities for research institutes and organizations to pool their resources in order to face these technical challenges. In this situation, CEA (French Nuclear Energy Commission) and SCK'CEN (Belgian Nuclear Research Centre) have combined their efforts and now share common developments through a Joint Instrumentation Laboratory. Significant progresses have thus been obtained recently in the field of in-pile measurements, on one hand by improvement of existing measurement methods, and on the other hand by introduction in research reactors of original measurement techniques. This paper highlights the state-of-the-art and the main requirements regarding in-pile measurements, particularly for the needs of current and future irradiation programs performed in material testing reactors. Some of the main on-going developments performed in the framework of the Joint Instrumentation Laboratory are also described, such as: - a unique fast neutron flux measurement system using fission chambers with 242Pu deposit and a specific online data processing

O jogo defensivo diante de diferentes sistemas ofensivos no handebol: análise do cenário técnico-tático e reflexões sobre o ensino

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Rafael Pombo Menezes

Full Text Available Resumo O objetivo desta pesquisa foi mapear os principais comportamentos e elementos técnico-táticos defensivos diante de diferentes sistemas ofensivos no handebol. Foram entrevistados quatro treinadores experientes, cujos depoimentos foram tabulados e analisados com base no método do Discurso do Sujeito Coletivo. Diante do sistema ofensivo clássico foram apontados elementos como flutuação, variabilidade defensiva e dificultar a atuação de pontas e pivô. Diante de sistemas diferentes do clássico os treinadores sugerem dificultar a produção de espaços, alternar os sistemas defensivos e a adaptação às situações do jogo. São esperados comportamentos específicos diante dos cenários técnico-táticos impostos por diferentes sistemas ofensivos que requerem formas específicas de treinamento.

Grupos musicais em saúde mental: Atores em ação no cenário da reforma psiquiátrica no Rio de Janeiro/Brasil

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João Arriscado Nunes

2012-10-01

Full Text Available O artigo investiga a formação de grupos musicais com usuários dos serviços de saúde mental da cidade do Rio de Janeiro. As seguintes questões norteiam a pesquisa: a qual é a relação entre tais grupos musicais e outros dispositivos grupais de tratamento, como a musicoterapia?; b como lidam esses grupos com a inclusão social dos usuários dos serviços?; c e como lidam com a renda gerada pelos CDs gravados e pelos shows?; d que efeitos produz a visibilidade dos grupos nas mídias televisiva, impressa e outras? A pesquisa de campo foi realizada com o referencial da teoria ator‑rede e se centrou em dois grupos musicais: o Sistema Nervoso Alterado e o Harmonia Enlouquece. As conclusões indicam que a emergência de tais grupos musicais está associada ao cenário da Reforma Psiquiátrica e que as suas práticas podem problematizar e contrariar o estigma da loucura.

Saúde mental na atenção primária e Saúde Mental Global: perspectivas internacionais e cenário brasileiro

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Leandro David Wenceslau

2015-12-01

Full Text Available Este artigo apresenta uma análise teórica sobre a integração da saúde mental na atenção primária sob a perspectiva dos objetivos e estratégias da Saúde Mental Global (Global Mental Health - GMH. Esta tarefa é dividida em duas partes. A primeira parte é dedicada a estudos internacionais de revisão sobre o tema, e a segunda trata de publicações normativas e científicas brasileiras que tocam a questão. Os estudos internacionais ratificam a integração da saúde mental na atenção primária à saúde como estratégia fundamental para o alcance dos objetivos do GMH. No cenário brasileiro, o tema é relevante para as políticas e pesquisas em saúde mental, porém, os objetivos desta integração e suas formas de operacionalização demandam melhor definição. Nas conclusões, apontamos obstáculos para que a APS possa ocupar um papel estratégico para as ações de saúde mental no Sistema Único de Saúde.

Topoisomerase I copy number alterations as biomarker for irinotecan efficacy in metastatic colorectal cancer

DEFF Research Database (Denmark)

Palshof, Jesper Andreas; Hogdall, Estrid Vilma Solyom; Poulsen, Tim Svenstrup

2017-01-01

Background No biomarker exists to guide the optimal choice of chemotherapy for patients with metastatic colorectal cancer. We examined the copy numbers (CN) of topoisomerase I (TOP1) as well as the ratios of TOP1/CEN-20 and TOP1/CEN-2 as biomarkers for irinotecan efficacy in patients...... were produced. FISH analysis was performed using two probe-mixes: TOP1/CEN-20 and TOP1/CEN-2. Only samples harboring all three signals (TOP1, CEN-20 and CEN-2) using FISH were included in the analyses. Results In the TOP1/CEN-20 probe-mix the median TOP1- and CEN-20 CN were 4.46 (range: 1.5–9.5) and 2.......00 (range: 0.55–4.55), respectively. The median TOP1- and CEN-2 CN in the TOP1/CEN-2 probe-mix, were 4.57 (range: 1.82–10.43) and 1.98 (range: 1.22–6.14), respectively. The median TOP1/CEN-20 ratio and TOP1/CEN-2 ratio were 1.25 (range: 0.92–2.90) and 2.05 (range: 1.00–6.00), respectively. None...

A percepção da informação e da sua relevância no cenário institucional: sob a perspectiva de gestores e líderes

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Eliane Vieira

Full Text Available Considerando o volume e a velocidade da informação que permeia o ambiente organizacional, este artigo tem o objetivo de auxiliar no entendimento e na contextualização dessa informação, por meio da avaliação de lideranças, com o propósito de determinar a percepção da informação e da sua relevância no contexto organizacional. A informação é responsável por contribuir para que a tomada de decisão responda às expectativas da empresa. À luz da teoria proposta por Choo (2003, este artigo reafirma que a informação deve ser processada, visando a reduzir ou evitar a incerteza e apoiar as decisões organizacionais; para isso, a forma como é percebida é vital para que cumpra seu propósito. A metodologia adotada visa a responder às perguntas: "Como a informação é percebida no cenário organizacional?" e "Qual é a relevância da informação?". Trata-se de estudo de caso realizado em uma organização privada, multinacional, do segmento de reflorestamento. Nos resultados, foi possível inferir que os envolvidos possuem uma notável percepção da informação e da sua relevância, embora se tenha observado que, em algumas situações, existe a necessidade de melhorar o fluxo, as ferramentas e a gestão da informação, para que, no contexto organizacional, ela constitua um recurso para decisões efetivas. Identificou-se que a necessidade de informação e sua aquisição, armazenamento, produtos e serviços, uso e disseminação, seguindo o modelo de Choo, realçam a percepção da informação e sua relevância no cenário institucional. A continuidade do estudo sugere a mensuração do impacto e influência da informação e a ampliação da percepção sob a perspectiva de subordinados.

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

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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

Tempos de subversões: a iminência de um terrorismo poético. O ativismo artístico e sua influência no cenário político das décadas de 1960 e 1970

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Richard Augusto Silva

2014-06-01

Full Text Available Este trabalho tem como proposta, discorrer sobre contextos históricos de resistência aos poderes hegemônicos do capital no período da década de 1960, destacando o ativismo artístico, no qual atua em conjunto com mobilizações sociais e políticas da época, elucidando novos rumos para as práticas artísticas e políticas. Analisa-se sua influência no pensamento social entre movimentos sociais e artísticos. Em vias das articulações politicas sociais em relação ao ativismo artístico e seus desdobramentos no cotidiano social e cenário político brasileiro

Planos de classificação em arquivos: estudo comparativo de Planos de Classificação no cenário Brasileiro, Espanhol e Português

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Thiago Roberto Lopes

2017-06-01

Full Text Available O propósito desta pesquisa mostra um estudo comparativo de Planos de Classificação arquivística no cenário do Brasil, Portugal e Espanha. Trata-se de uma pesquisa documental, caracterizando-se como descritiva e bibliográfica. O instrumento de coleta das informações foi um documento da Agência Nacional de Energia Elétrica, contendo o Plano de Classificação do órgão e, também, documentos da Administração Local de Portugal e O Cuadro de Clasificación de Fondos para a Administração Local da Espanha, além do Cuadro general de clasificación archivística. Por meio de estudos comparativos destes Planos de Classificação, da análise dos dados contidos nesses documentos e da revisão bibliográfica, foi possível apontar características em comum entre os Planos de Classificação em cada país, assim como as diferenças e os pontos positivos e negativos.

Política de Saúde Bucal no Brasil 2003-2014: cenário, propostas, ações e resultados

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Sônia Cristina Lima Chaves

Full Text Available Resumo Este estudo analisou a implementação da Política de Saúde Bucal no Brasil de 2003 a 2014, caracterizando cenários, ações institucionais do poder executivo nos componentes do sistema de saúde em três governos. Realizou-se análise documental das tomadas de decisão da Coordenação Geral de Saúde Bucal do Ministério da Saúde através de documentos de setores estratégicos do governo disponíveis nos sítios da internet, como portal da transparência e Instituto Brasileiro de Geografia e Estatística. Este estudo apontou crescimento na oferta e cobertura potencial de serviços públicos odontológicos entre 2003 e 2006 e certa manutenção nos períodos 2007-2010 e 2011-2014. Houve ampliação do financiamento nominal, infraestrutura e recursos humanos. Os recursos repassados para estados e municípios passaram de 83,4 milhões em 2003 para 916 milhões em 2014, aumento de 10,9 vezes no período. O uso dos serviços odontológicos no SUS entre 2003-2008 manteve-se constante em torno de 30%. Houve aumento do uso dos serviços odontológicos privados (64,4% em 2003, 69,6% em 2008 e 74,3% em 2013. O componente do modelo de atenção foi o menos abordado nos três governos, constituindo-se em lacuna com repercussões nos resultados requerendo adoção de medidas futuras por parte dos gestores.

Atenção primária como cenário de prática na percepção de estudantes de Medicina

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Alice Werneck Massote

Full Text Available A formação de médicos capacitados para atuar na Atenção Primária à Saúde (APS, cujo intuitoé promover um aprendizado vinculado às necessidades reais de saúde da comunidade, tem sido tema de estudos no Brasil há alguns anos. Em 1975, a Faculdade de Medicina da UFMG (FM/UFMG inseriu seus estudantes em cenários de APS e atualmente busca ampliar essa inserção. Neste sentido, o objetivo desta pesquisa foi investigar a percepção dos estudantes do oitavo período da FM/UFMG sobre as atividades realizadas nos centros de saúde, tomando como referência as propostas do SUS para a APS. Trata-se de estudo qualitativo, que utilizou para a coleta de dados as técnicas de observação e grupos focais com estudantes de Medicina. A experiência de inserção na APS foi considerada válida e importante para a formação médica, contribuindo para construir uma nova visão do processo saúde- -doença e da organização do SUS. Conclui-se que é importante inserir os estudantes de Medicina na APS em seu processo de formação.

Formação docente e educação a distância: um estudo do cenário educativo de Santa Catarina

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Rafael Pereira Ocampo Moré

2012-04-01

Full Text Available DOI: http://dx.doi.org/10.5007/2175-8077.2012v14n32p9 A formação docente é fator preponderante na luta pela qualidade na educação do Brasil. A partir da promulgação da Lei de Diretrizes e Bases (LDB, em 1996, tem-se o desafio de formar novos professores e, para isso, verifica-se na Educação a Distância (EaD uma excelente alternativa de acesso à  educação superior pública. A EaD é definida como proposta educativa que utiliza tecnologias para diminuir a distância entre as Instituições de Ensino Superior (IES e os alunos, e é nesse contexto que surge a Universidade Aberta do Brasil (UAB, que atualmente é a principal política de formação docente por meio da EaD. O objetivo do trabalho é apresentar as políticas de formação docente inseridas no estado de Santa Catarina, sendo detalhada a UAB no cenário brasileiro e catarinense e analisada a inserção de TICs nas escolas catarinense como mecanismo de promoção e estímulo ao uso da EaD como proposta educativa.

Promoção da saúde no cenário religioso: possibilidades para o cuidado de enfermagem Promoción de la salud en un ambiente religioso: posibilidades para el cuidado de enfermería Health promotion in the religious scenario: opportunities for nursing care

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Adriana Gomes Nogueira Ferreira

2011-12-01

Full Text Available Estudo qualitativo, do tipo documental, desenvolvido no primeiro semestre de 2008, objetivando descrever as práticas de promoção da saúde desenvolvidas no cenário religioso católico em município do interior do Ceará. As informações foram coletadas por meio de entrevistas áudio-gravadas, junto ao sacerdote responsável pela paróquia e a três coordenadores de projetos vinculados à Igreja Católica, selecionados a partir da identificação dos projetos com o pároco. Os resultados apontam que a promoção e educação em saúde estão presentes nas atividades desenvolvidas por voluntários no cenário religioso. A Igreja busca a mudança de atitude e adoção de comportamento saudável dos indivíduos, por meio de ações individuais e coletivas. Urge necessidade da inserção de profissionais de saúde para atuar neste cenário, fortalecendo-o como rede social de apoio, reduzindo gradativamente atividades assistenciais e intensificando aquelas voltadas à promoção da saúde, com apoio da Enfermagem, com vistas a aprimorar o cuidado à saúde neste cenário.Estudio cualitativo, de tipo documental, desarrollado en el primer semestre de 2008, con el objetivo de describir las prácticas de promoción de la salud desarrolladas en un ambiente religioso en municipio del interior de Ceará, Brasil. Las informaciones fueron colectadas por medio de entrevistas audio-grabadas, junto al sacerdote de la parroquia y tres coordinadores de proyectos. Los resultados indican que la promoción y educación en salud están presentes en las actividades desarrolladas por voluntarios en un ambiente religioso. La iglesia busca un cambio de actitud y la adopción de comportamientos saludables de los individuos, por medio de acciones individuales y colectivas. Urge la necesidad de inserción de profesionales de salud para actuar en este ambiente fortaleciéndolo como red social de apoyo, reduciendo actividades asistenciales e intensificando la promoción de

Analysis of Tb3+- and melittin-binding with the C-terminal domain of centrin in Euplotes octocarinatus

International Nuclear Information System (INIS)

Zhao Yaqin; Diao Xiuling; Yan Jun; Feng Yanan; Wang Zhijun; Liang Aihua; Yang Binsheng

2012-01-01

Centrin is a low molecular mass (20 KDa) protein that belongs to the EF-hand superfamily. In this work, the interaction between the Tb 3+ -saturated C-terminal domain of Euplotes octocarinatus centrin (Tb 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 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 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 2 -C-EoCen were calculated to be log K (C-EoCen-TNS) =5.32±0.04 M −1 and log K (Tb2-C-EoCen-TNS) =5.58±0.12 M −1 , respectively. In addition, the protein of Tb 2 -C-EoCen binding with melittin was also studied. Based on the fluorescence titration curves, the 1:1 stoichiometric ratio of Tb 2 -C-EoCen to melittin was confirmed. And the conditional binding constant of C-EoCen with melittin was calculated to be log Ka′=6.79±0.17 M −1 . - Highlights: ► Tb 3+ induced conformational changes of protein C-EoCen from closed state to open state. ► Conformational changes resulted in the exposure of hydrophobic surfaces on C-EoCen. ► Tb 2 -C-EoCen may bind with target peptide melittin.

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

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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

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

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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.

Uva mecânica : A colheita da uva no Brasil ainda é feita de forma manual na maioria dos parreirais. Mas neste cenário já é possível ver máquinas realizando a tarefa antes feita pelas mãos dos trabalhadores, operação que em outros países já possui uma taxa de mecanização maior.

OpenAIRE

Valente, Wilson; Barreiro Elorza, Pilar

2015-01-01

Uva mecânica A colheita da uva no Brasil ainda é feita de forma manual na maioria dos parreirais. Mas neste cenário já é possível ver máquinas realizando a tarefa antes feita pelas mãos dos trabalhadores, operação que em outros países já possui uma taxa de mecanização maior.

Center for Nuclear Safety in Central and Eastern Europe: a platform for co-operation

International Nuclear Information System (INIS)

Tomik, L.; Kichev, E.

2003-01-01

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

If we share data, will anyone use them? Data sharing and reuse in the long tail of science and technology.

Science.gov (United States)

Wallis, Jillian C; Rolando, Elizabeth; Borgman, Christine L

2013-01-01

Research on practices to share and reuse data will inform the design of infrastructure to support data collection, management, and discovery in the long tail of science and technology. These are research domains in which data tend to be local in character, minimally structured, and minimally documented. We report on a ten-year study of the Center for Embedded Network Sensing (CENS), a National Science Foundation Science and Technology Center. We found that CENS researchers are willing to share their data, but few are asked to do so, and in only a few domain areas do their funders or journals require them to deposit data. Few repositories exist to accept data in CENS research areas.. Data sharing tends to occur only through interpersonal exchanges. CENS researchers obtain data from repositories, and occasionally from registries and individuals, to provide context, calibration, or other forms of background for their studies. Neither CENS researchers nor those who request access to CENS data appear to use external data for primary research questions or for replication of studies. CENS researchers are willing to share data if they receive credit and retain first rights to publish their results. Practices of releasing, sharing, and reusing of data in CENS reaffirm the gift culture of scholarship, in which goods are bartered between trusted colleagues rather than treated as commodities.

Análise de Cenários Envolvendo Satisfação no Trabalho e Estresse Ocupacional Através da Dinâmica de Sistemas

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Damiana Machado de Almeida

2017-04-01

Full Text Available Este artigo tem por objetivo apresentar o desenvolvimento e validação de um modelo de simulação computacional que permita aos gestores da área de gestão de pessoas avaliarem e analisarem cenários acerca da satisfação no trabalho e do estresse ocupacional. A partir das relações inversamente proporcionais entre estresse e satisfação, estabeleceu-se uma associação entre as duas variáveis, considerando um impacto positivo da satisfação para a redução dos níveis de estresse. Diante da análise destas relações, percebeu-se que o aumento da satisfação em 14,8% ao longo dos 10 períodos simulados gerou uma redução nos níveis de estresse ocupacional. Assim, o estresse foi reduzido de uma média de 2,16 a um nível de 2,05. Os resultados desta pesquisa fornecem uma importante compreensão acerca das relações da satisfação no trabalho com estresse ocupacional, fornecendo um modelo de simulação que testa os impactos das ações desenvolvidas pela área de gestão de pessoas para elevar os níveis de satisfação sobre os níveis de estresse ocupacional de seus colaboradores.

O cultivo do algodão herbáceo no sistema de sequeiro no Nordeste do Brasil, no cenário de mudanças climática Cultivation of upland cotton in the rainfed system in Northeastern Brazil in the climate change scenario

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Madson T. Silva

2012-01-01

Full Text Available O principal objetivo do estudo foi avaliar o impacto das mudanças climáticas no algodoeiro herbáceo (Gossypium hirsutum L. latifolium Hutch cultivado no Nordeste do Brasil a partir de estimativas da disponibilidade de terras aptas para a atividade agrícola de sequeiro. Essas informações, baseadas em cenários de aumento de temperatura e variabilidade da precipitação pluvial do Painel Intergovernamental de Mudanças Climáticas (IPCC, alimentam um modelo inter-regional de balanço hídrico. Os dados utilizados no estudo foram séries climatológicas diárias de precipitação pluvial, maior que 30 anos, coeficientes da cultura, evapotranspiração potencial e a duração do ciclo. Os cenários denominados A, B e C correspondem, respectivamente, aos aumentos de temperatura média do ar em 1,5; 3,0 e 5,0 ºC associados com as oscilações percentuais de precipitação de ±10; ±25 e ±40%. O Índice de Satisfação das Necessidades de Água para a cultura (ISNA, definido como a relação entre a evapotranspiração real e a evapotranspiração máxima (ETr/ETm foi utilizado como critério na definição das áreas favoráveis ao cultivo do algodoeiro. Os resultados obtidos sugerem que os cenários de mudanças climáticas podem provocar reduções de áreas favoráveis ao algodoeiro herbáceo em toda a região Nordeste do Brasil.The main objective of the study was to analyse the impact of climate change on upland cotton (Gossypium hirsutum L. latifolium Hutch grown in Northeastern Brazil from estimates of the availability of land suitable for rainfed agriculture. This information, based on scenarios of increased temperature and rainfall variability of the Intergovernmental Panel on Climate Change (IPCC, was used in a model of inter-regional water balance. The data series used in the study were climatological daily rainfall of more than 30 years, crop coefficients, evapotranspiration potential and cycle length. The scenarios named A, B and

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)

Majewski, Steven R.; Nidever, David L.; Damke, Guillermo J.; Patterson, Richard J.; García Pérez, Ana E.; Smith, Verne V.; Kunkel, William E.; Bizyaev, Dmitry

2012-01-01

We present the latitude-normalized radial velocity (v b ) distribution of 3318 subsolar metallicity, V ∼ b sequences. One sequence in the fourth Galactic quadrant lies within the l-v b space expected to contain tidal debris from the 'star cluster' ωCentauri. Not only does ωCen lie precisely in this l-v b sequence, but the positions and v b 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.

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

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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.

Problematização como método ativo de ensino-aprendizagem: estudantes de farmácia em cenários de prática Problematization as an active method of teaching and learning: pharmacy students in practice settings

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Rinaldo Henrique Aguilar da Silva

2011-06-01

Full Text Available O objetivo deste trabalho é realizar uma reflexão sobre a implantação de metodologia ativa de ensino-aprendizagem da problematização nos cenários de prática da graduação em Farmácia. A problematização vem sendo utilizada como estratégia de ensino visando à formação de profissionais mais críticos, reflexivos, capazes de trabalhar em equipe e de aprender juntos. O farmacêutico com esse perfil é capaz de atuar no Sistema Único de Saúde (SUS articulado com o contexto social, contribuindo para a melhoria da qualidade de vida das pessoas, conforme preconizam as Diretrizes Curriculares Nacionais. Para isso, foram analisados qualitativamente os instrumentos de avaliação preenchidos pelos estudantes que destacaram as principais fragilidades e fortalezas do processo. Foi possível analisar os seguintes aspectos: cenários de prática; orientação discente; reorientação da formação e assistência. Conclui-se que, apesar dos grandes desafios ainda existentes, incluindo a inadequada capacitação dos docentes, esse modelo de educação está em consonância com o objetivo propostoThe purpose of this study was to reflect on the deployment of an active teaching and learning methodology in practical settings in undergraduate Pharmacy studies. Problematization has been used as a teaching strategy aimed at training more critical, reflective professionals capable of working and learning together. A pharmacist with this profile is capable of working in the Single National Health System (SUS integrated with the social context and contributing to improving people's quality of life, as advocated by the National Curriculum Guidelines. For this, the assessment tools provided by the students were analyzed qualitatively, and the main weaknesses and strengths of the process were highlighted. It was possible to analyze the following aspects: practical settings, student orientation, retraining, and assistance. We conclude that, despite the fact

The European community and its standardization efforts in medical informatics

Science.gov (United States)

Mattheus, Rudy A.

1992-07-01

A summary of the CEN TC 251/4 ''Medical Imaging and Multi-Media'' activities will be given. CEN is the European standardization institute, TC 251 deals with medical informatics. Standardization is a condition for the wide scale use of health care and medical informatics and for the creation of a common market. In the last two years, three important categories-- namely, the Commission of the European Communities with their programs and the mandates, the medical informaticians through their European professional federation, and the national normalization institutes through the European committee--have shown to be aware of this problem and have taken actions. As a result, a number of AIM (Advanced Informatics in Medicine), CEC sponsored projects, the CEC mandates to CEN and EWOS, the EFMI working group on standardization, the technical committee of CEN, and the working groups and project teams of CEN and EWOS are working on the subject. On overview of the CEN TC 251/4 ''Medical Imaging and Multi-Media'' activities will be given, including their relation to other work.

Mudanças climáticas e a cana-de-açúcar no Brasil: Fisiologia, conjuntura e cenário futuro Climate change and the sugarcane in Brazilian: Physiology, conjuncture and future scenario

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Fabio Marin

2013-02-01

Full Text Available Com base na revisão de literatura, o manuscrito analisa qualitativamente um futuro cenário para a cana-de-açúcar no Brasil, com base na tendência de expansão da cultura observada ao longo da última década, a conjuntura atual do setor e as projeções de mudanças climáticas globais regionalizadas para este século. O principal foco foi associar os resultados científicos sobre a fisiologia da cana-de-açúcar e suas respostas à elevação na concentração de dióxido de carbono atmosférico e eficiência de uso da água com as perspectivas socioeconômicas do setor canavieiro do Brasil. Prováveis efeitos sobre plantas daninhas, pragas e doenças da cana-de-açúcar, também foram abordados. A base do conhecimento disponível na literatura indica que a cana-de-açúcar apresentaria uma resposta positiva em relação aos cenários de mudanças climáticas mais prováveis para o Brasil, tanto pela resposta direta da fotossíntese à elevação na concentração do dióxido de carbono quanto ao aumento da eficiência de uso da água. Contudo, é provável que o manejo na cultura necessite de adaptações uma vez que plantas daninhas e doenças poderiam ser favorecidas pelas condições futuras.Based on literature, this paper examines qualitativelly a future scenario for the sugarcane in Brazil. It was done considering the expanding trend of the crop observed over the last decade, the current sector conjuncture, and the down scaled climate change projections for this century. The focus was to associate the scientific findings on the physiology of sugarcane and their responses to the rise in atmospheric CO2 concentration and the water use efficiency with socio-economic prospects for the sugarcane industry in Brazil. Probable effects on weeds, diseases and pest of sugarcane crop were also analysed. Available literature indicates that sugarcane crop would likely show a positive response to probably scenarios of climate change in Brazil due

Políticas nacionais e o campo da Alimentação e Nutrição em Saúde Coletiva: cenário atual National policies and the field of Food and Nutrition in Collective Health: the current scenario

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Elisabetta Recine

2011-01-01

Full Text Available É apresentado um balanço da implementação das diretrizes da Política Nacional de Alimentação e Nutrição (PNAN contextualizando as ações no cenário do Sistema Único de Saúde (SUS. Aos dez anos de sua publicação, a PNAN se defronta com desafios tanto para expandir como para qualificar as ações de alimentação e nutrição na saúde, e também para se apresentar como interlocutora e representante legítima da área da saúde, no contexto político e institucional da segurança alimentar e nutricional. Questões relacionadas à articulação da PNAN e da futura Política Nacional de Segurança Alimentar e Nutricional são analisadas para demonstrar a confluência de agendas entre as prioridades para a garantia da SAN. São apontadas as potencialidades desse campo de ação, a partir do atual cenário institucional, e a necessidade de soluções abrangentes que atendam à complexidade da alimentação e nutrição em Saúde Coletiva.It is presented a review of the guidelines implementation of the National Food and Nutrition Policy (PNAN contextualizing the actions in the Brazilian Unified Health System (SUS scenario. At ten years of its publication, PNAN faces challenges both to expand and qualify the shares of food and nutrition on health. It is challenging to stand as interlocutor and legitimate representative of the area of health, political and institutional context of food security and nutrition. Issues related to the articulation of PNAN and future National Policy on Food and Nutrition Security will be analyzed to demonstrate the convergence of agendas among the priorities for the guarantee of the SAN. The authors identify the potential of this field of action, from the current institutional setting, and the need for comprehensive solutions that address the complexity of food and nutrition in health.

Desafios globais contemporâneos: cenário de convergências no direito internacional Global contemporary challenges: convergences scenario in international law

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Ely Caetano Xavier Junior

2009-12-01

Full Text Available O cenário internacional contemporâneo é caracterizado por uma multiplicidade de agentes e interesses, gerando uma complexa teia de relações econômicas, sociais e jurídicas. os desafios globais representados pelas inéditas relações exigem respostas rápidas e eficientes por parte do direito. Essa jornada em busca das soluções para os conflitos emergentes do plano internacional requer uma releitura do significado da divisão entre as esferas pública e privada do direito. Seja através do crescimento dos fundos soberanos de riqueza, que traz à luz uma série de novos paradigmas no campo econômico, sobretudo a convergência entre o papel do estado e o papel do investidor internacional; seja através do encontro entre a necessidade de proteção aos direitos humanos e a harmonização do sistema multilateral de comércio internacional; seja através das interseções entre a governança global e a tutela dos direitos difusos, o direito internacional certamente caminha para a convergência.The contemporary international scenario is characterized by a multiplicity of actors and interests, creating a complex web of economic, social and legal relationships. The challenges represented by these new relationships need rapid and efficient responses by law. This journey seeking the solutions to the conflicts arising from the international arena requires a reassessment of the meaning of the division between public and private spheres of law. Through the growth of sovereign wealth funds, which arises several new paradigms in the economic field, noticeably the convergence between the role of the state and the role of the international investor; through the encounter between the necessity to protect human rights and harmonize the multilateral international trade system, or through the intersections between global governance and the protection of diffuse rights, international law is certainly moving towards the convergence.

Biofunctionalized Lysophosphatidic Acid/Silk Fibroin Film for Cornea Endothelial Cell Regeneration

Science.gov (United States)

Jeon, Hayan; Oliveira, Joaquim Miguel; Reis, Rui Luis; Khang, Gilson

2018-01-01

Cornea endothelial cells (CEnCs) tissue engineering is a great challenge to repair diseased or damaged CEnCs and require an appropriate biomaterial to support cell proliferation and differentiation. Biomaterials for CEnCs tissue engineering require biocompatibility, tunable biodegradability, transparency, and suitable mechanical properties. Silk fibroin-based film (SF) is known to meet these factors, but construction of functionalized graft for bioengineering of cornea is still a challenge. Herein, lysophosphatidic acid (LPA) is used to maintain and increase the specific function of CEnCs. The LPA and SF composite film (LPA/SF) was fabricated in this study. Mechanical properties and in vitro studies were performed using a rabbit model to demonstrate the characters of LPA/SF. ATR-FTIR was characterized to identify chemical composition of the films. The morphological and physical properties were performed by SEM, AFM, transparency, and contact angle. Initial cell density and MTT were performed for adhesion and cell viability in the SF and LPA/SF film. Reverse transcription polymerase chain reactions (RT-PCR) and immunofluorescence were performed to examine gene and protein expression. The results showed that films were designed appropriately for CEnCs delivery. Compared to pristine SF, LPA/SF showed higher biocompatibility, cell viability, and expression of CEnCs specific genes and proteins. These indicate that LPA/SF, a new biomaterial, offers potential benefits for CEnCs tissue engineering for regeneration. PMID:29710848

Training Activities to Maintain Competences in Nuclear Safety and Security: A Case Study of the Belgian Nuclear Research Centre

International Nuclear Information System (INIS)

Kesteloot, N.; Clarijs, T.; Coeck, M.; Vermeersch, F.

2016-01-01

Full text: The Belgian Nuclear Research Centre, SCK•CEN, is one of the largest research centers in Belgium. More than 700 employees advance research into nuclear energy and ionizing radiation for civilian use, and develop nuclear technologies for socially valuable purposes. Next to independent fundamental and applied research SCK-CEN provides advice, training, services and products. This paper describes the general approach towards the continuous professional development of all SCK-CEN personnel. The objective of these training activities is to maintain and increase the required competences, in order to optimize the output and the wellbeing on the work floor. Given the nature of the SCK-CEN activities, special attention is given to themes like radiation protection, security and industrial safety. A combination of classical face-to-face training, e-learning and on-the-job training is offered during the onboarding and further career path of an SCK-CEN employee. (author

A Bioeconomia e os Biocombustíveis no cenário Brasileiro = The Bioeconomy and Biofuels in the Brazilian scenario

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Kênia Carvalho de Oliveira

2015-04-01

Full Text Available Os biocombustíveis vêm se tornando uma excelente fonte de energia alternativa ao petróleo. Eles são cada vez mais importantes no cenário global, principalmente por se tratarem de uma produção mais sustentável de energia. Neste contexto, países como o Brasil têm um papel fundamental, na produção dessa energia renovável. O objetivo desse trabalho foi discutir o impacto dos biocombustíveis no País. A pesquisa foi realizada de forma descritiva e os dados foram avaliados qualitativamente. As informações demonstraram que o agronegócio de biocombustíveis no Brasil é crescente, apesar do baixo apoio governamental. Cabe destacar, a cadeia de produção do etanol, que é bem organizada, porém está principalmente concentrada na região sudeste. Por sua vez, o Biodiesel, precisa evoluir bastante para se tornar mais competitivo, principalmente no norte e nordeste do Brasil, dessa forma os incentivos poderiam ser direcionados para o desenvolvimento sócio-econômico sobretudo nessas regiões. Por fim, conclui-se que a produção de biocombustíveis é uma importante oportunidade para o Brasil e, deve ser pensada de forma estratégica, com objetivo de gerar empregos, renda e desenvolvimento de forma sustentável. = Biofuels are becoming an excellent alternative energy source to petroleum. They are increasingly important in the global scenario, especially since they are more "sustainable" energy production. In this context, countries like Brazil have a key role, given the country’s potential in renewable energy. The aim of this study was to discuss the impact of biofuels in the country. The survey was conducted descriptively and the data was evaluated qualitatively. The information showed that agribusiness biofuel in Brazil is increasing, despite low government support. Worth noting, the chain of production of ethanol is very well organized, but mainly in the Southeast. In turn, Biodiesel needs to evolve enough to become more competitive

Role of four conserved aspartic acid residues of EF-loops in the metal ion binding and in the self-assembly of ciliate Euplotes octocarinatus centrin.

Science.gov (United States)

Liu, Wen; Duan, Lian; Sun, Tijian; Yang, Binsheng

2016-12-01

Ciliate Euplotes octocarinatus centrin (EoCen) is an EF-hand calcium-binding protein closely related to the prototypical calcium sensor protein calmodulin. Four mutants (D37K, D73K, D110K and D146K) were created firstly to elucidate the importance of the first aspartic acid residues (Asp37, Asp73, Asp110 and Asp146) in the beginning of the four EF-loops of EoCen. Aromatic-sensitized Tb 3+ fluorescence indicates that the aspartic acid residues are very important for the metal-binding of EoCen, except for Asp73 (in EF-loop II). Resonance light scattering (RLS) measurements for different metal ions (Ca 2+ and Tb 3+ ) binding proteins suggest that the order of four conserved aspartic acid residues for contributing to the self-assembly of EoCen is Asp37 > Asp146 > Asp110 > Asp73. Cross-linking experiment also exhibits that Asp37 and Asp146 play critical role in the self-assembly of EoCen. Asp37, in site I, which is located in the N-terminal domain, plays the most important role in the metal ion-dependent self-assembly of EoCen, and there is cooperativity between N-terminal and C-terminal domain (especially the site IV). In addition, the dependence of Tb 3+ induced self-assembly of EoCen and the mutants on various factors, including ionic strength and pH, were characterized using RLS. Finally, 2-p-toluidinylnaphthalene-6-sulfonate (TNS) binding, ionic strength and pH control experiments indicate that in the process of EoCen self-assembly, molecular interactions are mediated by both electrostatic and hydrophobic forces, and the hydrophobic interaction has the important status.

Distinctive Resting State Network Disruptions Among Alzheimer's Disease, Subcortical Vascular Dementia, and Mixed Dementia Patients.

Science.gov (United States)

Kim, Hee Jin; Cha, Jungho; Lee, Jong-Min; Shin, Ji Soo; Jung, Na-Yeon; Kim, Yeo Jin; Choe, Yearn Seong; Lee, Kyung Han; Kim, Sung Tae; Kim, Jae Seung; Lee, Jae Hong; Na, Duk L; Seo, Sang Won

2016-01-01

Recent advances in resting-state functional MRI have revealed altered functional networks in Alzheimer's disease (AD), especially those of the default mode network (DMN) and central executive network (CEN). However, few studies have evaluated whether small vessel disease (SVD) or combined amyloid and SVD burdens affect the DMN or CEN. The aim of this study was to evaluate whether SVD or combined amyloid and SVD burdens affect the DMN or CEN. In this cross-sectional study, we investigated the resting-state functional connectivity within DMN and CEN in 37 Pittsburgh compound-B (PiB)(+) AD, 37 PiB(-) subcortical vascular dementia (SVaD), 13 mixed dementia patients, and 65 normal controls. When the resting-state DMN of PiB(+) AD and PiB(-) SVaD patients were compared, the PiB(+) AD patients displayed lower functional connectivity in the inferior parietal lobule while the PiB(-) SVaD patients displayed lower functional connectivity in the medial frontal and superior frontal gyri. Compared to the PiB(-) SVaD or PiB(+) AD, the mixed dementia patients displayed lower functional connectivity within the DMN in the posterior cingulate gyrus. When the resting-state CEN connectivity of PiB(+) AD and PiB(-) SVaD patients were compared, the PiB(-) SVaD patients displayed lower functional connectivity in the anterior insular region. Compared to the PiB(-) SVaD or PiB(+) AD, the mixed dementia patients displayed lower functional connectivity within the CEN in the inferior frontal gyrus. Our findings suggest that in PiB(+) AD and PiB(-) SVaD, there is divergent disruptions in resting-state DMN and CEN. Furthermore, patients with combined amyloid and SVD burdens exhibited more disrupted resting-state DMN and CEN than patients with only amyloid or SVD burden.

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

Science.gov (United States)

De Bremaecker, Anne

2012-09-01

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 °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 (Al2O3, MgO, ZrO2, TiO2, ZrSiO4) followed by pressing, sintering, and extrusion. The compression and extrusion parameters were determined: extrusion as hollow at 1050 °C, solution annealing at 1050 °C/15 min, cleaning, cold drawing to the final dimensions with intermediate annealings at 1050 °C, final annealing at 1050 °C, straightening and final aging at 800 °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 PuO2 were loaded in the Belgian MTR BR2. The fabrication parameters were continuously optimized: milling and beating, lubrication, cold drawing (partial and final reduction rates, temperature, duration, atmosphere and furnace). Specific non

O cenário esportivo como arena de disputas políticas: entre a memória recitada e o apagamento de rastros = The sports scene as a political dispute arena: between recited memory and deletion of trails = La escena deportiva como arena de disputas políticas: entre la memoria recitada y la borradura de pistas

Directory of Open Access Journals (Sweden)

Fontineles, Claudia Cristina da Silva

2017-01-01

Full Text Available O presente texto discute em que medida dois elementos da vida esportiva do Piauí – o estádio de futebol “Albertão” e o time de futebol Tiradentes – foram tratados como acionadores na disputa entre os dois grupos políticos majoritários no cenário político piauiense, entre as décadas de 1970 e 1980. Tratados como insígnias do primeiro governo de Alberto Silva (1971-1975, foram aplaudidos por seus aliados como sinônimo da inscrição do estado em um contexto de prosperidade e da euforia desenvolvimentista, consonante com o cenário político em vigência no Brasil em tempos de Ditadura Civil-Militar, e rechaçados por seus oponentes por serem considerados a reafirmação da presença deste governo na história e na memória da sociedade piauiense. Neste artigo, discutimos como essas disputas manifestaram-se nas disputas políticas estabelecidas entre estes grupos e inscreveram-se no cotidiano e na memória social local. Para tanto, foram analisados como fontes históricas documentos oficiais, jornais de circulação no período, além das fotografias usadas pelo governo em suas correspondências oficiais e de relatos orais, que, à luz da interlocução teórica com Michel de Certeau, Réne Rémond, Paul Ricœur, Paul Veyne, Michel Pollak, entre outros, contribuíram para a elucidação analítica da temática

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.

Viabilidade econômica da criação de pacas (Cuniculus paca L. em Presidente Tancredo Neves, Bahia = Economic feasibility of paca (Cuniculus paca L. farming in Presidente Tancredo Neves, Bahia

Directory of Open Access Journals (Sweden)

Antônio Jorge Santos Silva Mattos

2016-04-01

Full Text Available Entre as espécies silvestres nativas de florestas tropicais, a paca (Cuniculus paca L. apresenta grande potencial para exploração comercial; no entanto, no Brasil, a sua produção continua sendo considerada como nicho de mercado. O presente trabalho objetivou analisar a viabilidade econômica de um criadouro comercial de paca sob três cenários distintos: Cenário 1 (animais nascidos em cativeiro, consumindo alimentos adquiridos em comércio e ração comercial, Cenário 2 (início com animais legalmente capturados alimentando-se com resíduos de frutas, ração e coprodutos da mandioca e Cenário 3 (mesmas premissas do Cenário 2, mas com autorização de manejo ocorrendo com dois anos de antecedência. Os cenários foram estudados para o município de Presidente Tancredo Neves, Bahia, Brasil. Foi elaborado o fluxo de caixa e analisado o Valor Presente Líquido [VPL], Taxa Interna de Retorno [TIR], Payback simples e Payback descontado para todos os cenários estudados. O fator alimentação fez com que os custos variáveis dos Cenários 2 e 3 fossem reduzidos em aproximadamente 76% em comparação ao Cenário 1. O cenário 1 apresentou fluxo de caixa inviável, enquanto que os Cenários 2 e 3 foram viáveis, porém com baixa rentabilidade e liquidez. O VPL do Cenário 2 foi quase 20% superior ao do Cenário 3, onde foi observado maior impacto do aumento do número de pacas no plantel, em comparação à tramitação burocrática, sobre os indicadores econômicos estudados.= Considering the native rainforests wildlife, paca (Cuniculus paca L. has a great potential for commercial exploitation, however its production is a market niche in Brazil. The objective of this study was to analyze the financial feasibility of paca farming in three distinct scenarios: Scenario 1 (captive animals, fed with purchased fruits and commercial ration; Scenario 2 (animals legally caught, fed with commercial ration, fruits and cassava co-products and; Scenario 3

Phylogenetic and structural analysis of centromeric DNA and kinetochore proteins

OpenAIRE

Meraldi, Patrick; McAinsh, Andrew D; Rheinbay, Esther; Sorger, Peter K

2006-01-01

Background: Kinetochores are large multi-protein structures that assemble on centromeric DNA (CEN DNA) and mediate the binding of chromosomes to microtubules. Comprising 125 base-pairs of CEN DNA and 70 or more protein components, Saccharomyces cerevisiae kinetochores are among the best understood. In contrast, most fungal, plant and animal cells assemble kinetochores on CENs that are longer and more complex, raising the question of whether kinetochore architecture has been conserved through ...

Reflection group on 'Expert Culture'

International Nuclear Information System (INIS)

Eggermont, G.

2000-01-01

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

The use of ligneous plants for controlling the radioactive contamination of a soil; Utilisation des vegetaux ligneux au controle de la pollution radioactive d'un sol

Energy Technology Data Exchange (ETDEWEB)

Gagnaire, J; Heuze, C; Aubert, M T [Commissariat a l' Energie Atomique, Grenoble (France).Centre d' Etudes Nucleaires

1961-07-01

A method for checking on the possible radioactive pollution of CEN-G. soil, by taking samples of tissue of ligneous plants cultivated on the land in question, is proposed and investigated during the vegetation period. A preliminary study on the retention capacity of the CEN-G. soil for solutions containing {sup 32}P and chemical composition is given. (author) [French] Une methode de controle de la pollution radioactive eventuelle du sol du CEN-G., a l'aide de prelevements de tissus de vegetaux ligneux, cultives sur ce terrain est proposee et etudiee pendant la periode vegetative. Une etude preliminaire du pouvoir de retention du sol du CEN-G, vis-a-vis de solutions contenant du {sup 32}P et de composition chimique, est exposee. (auteur)

How Dusty Is Alpha Centauri? Excess or Non-excess over the Infrared Photospheres of Main-sequence Stars

Science.gov (United States)

Wiegert, J.; Liseau, R.; Thebault, P.; Olofsson, G.; Mora, A.; Bryden, G.; Marshall, J. P.; Eiroa, C.; Montesinos, B.; Ardila, D.;

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.

Progress Report of CEN, France

Energy Technology Data Exchange (ETDEWEB)

Blachot, J. [Centre and Etudes Nucleaires de Grenoble, Grenoble (France)

2013-08-15

This paper presents the NUBASE2012 evaluation that contains the recommended values for nuclear and decay properties of nuclides in their ground and excited isomeric (T1=2{sub 1}00 ns) states. All nuclides for which some experimental information is known are considered. NUBASE2012 covers all up to date experimental data published in primary (journal articles) and secondary (mainly laboratory reports and conference proceedings) references, together with the corresponding bibliographical information. During the development of NUBASE2012, the data available in the 'Evaluated Nuclear Structure Data File' (ENSDF) database were consulted, and critically assessed of their validity and completeness. Furthermore, a large amount of new and somewhat older experimental results that were missing in ENSDF were compiled, evaluated and included in NUBASE2012. The atomic mass values were taken from the 'Atomic Mass Evaluation' (AME2012, second and third parts of the present issue). In cases where no experimental data were available for a particular nuclide, trends in the behaviour of specific properties in neighbouring nuclei (TNN) were examined. This approach allowed us to estimate, whenever possible, values for a range of properties, which are labeled in NUBASE2012 as 'non-experimental'. Evaluation procedures and policies that were used during the development of this database are presented, together with a detailed table of recommended values and their uncertainties. (author)

The major horse satellite DNA family is associated with centromere competence.

Science.gov (United States)

Cerutti, Federico; Gamba, Riccardo; Mazzagatti, Alice; Piras, Francesca M; Cappelletti, Eleonora; Belloni, Elisa; Nergadze, Solomon G; Raimondi, Elena; Giulotto, Elena

2016-01-01

The centromere is the specialized locus required for correct chromosome segregation during cell division. The DNA of most eukaryotic centromeres is composed of extended arrays of tandem repeats (satellite DNA). In the horse, we previously showed that, although the centromere of chromosome 11 is completely devoid of tandem repeat arrays, all other centromeres are characterized by the presence of satellite DNA. We isolated three horse satellite DNA sequences (37cen, 2P1 and EC137) and described their chromosomal localization in four species of the genus Equus. In the work presented here, using the ChIP-seq methodology, we showed that, in the horse, the 37cen satellite binds CENP-A, the centromere-specific histone-H3 variant. The 37cen sequence bound by CENP-A is GC-rich with 221 bp units organized in a head-to-tail fashion. The physical interaction of CENP-A with 37cen was confirmed through slot blot experiments. Immuno-FISH on stretched chromosomes and chromatin fibres demonstrated that the extension of satellite DNA stretches is variable and is not related to the organization of CENP-A binding domains. Finally, we proved that the centromeric satellite 37cen is transcriptionally active. Our data offer new insights into the organization of horse centromeres. Although three different satellite DNA families are cytogenetically located at centromeres, only the 37cen family is associated to the centromeric function. Moreover, similarly to other species, CENP-A binding domains are variable in size. The transcriptional competence of the 37cen satellite that we observed adds new evidence to the hypothesis that centromeric transcripts may be required for centromere function.

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.

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.

O contencioso do algodão: cenários para mudança na política de subsídios dos EUA The cotton dispute: scenarios for change in the U.S. subsidies policy

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Thiago Lima

2006-06-01

Full Text Available Neste artigo se examina a não adequação dos EUA ao parecer da OMC no contencioso do algodão. Argumenta-se que tal atitude é irracional do ponto de vista do Estado unitário e racional, mas que pode ser explicada por meio de uma perspectiva fragmentada do Estado. Assim, embora a administração desejasse a adequação, cotonicultores e congressistas potencializados por instituições políticas constrangeram as mudanças necessárias. Ao final são projetados cenários para a modificação da política de subsídios agrícolas dos EUA.The article examines the non compliance of the United States with the WTO report on the cotton dispute. It is argued that that attitude is not rational from the unitary and rational State point of view, but it can be explained through a fragmented perspective of the State. Thus, although the administration desired to comply, cotton growers and congressists, strengthened by political institutions, constrained the needed changes. In the end, scenarios about possible changes in the U.S. agriculture subsidy policy are projected.

Close binary star type x-ray star and its mechanism of radiation

Energy Technology Data Exchange (ETDEWEB)

Hoshi, R [Rikkyo Univ., Tokyo (Japan). Dept. of Physics

1975-09-01

Recent progress of the study of an X-ray star is described. In 1970, the periodical emission of pulsed X-rays from Cen X-3 and Her X-1 was observed. An optically corresponding celestial object for the Cen X-3 was reported in 1973, and the mass of Cen X-3 was revised. The optical object was named after Krzeminsky. From the observed variation of luminosity, it is said that the Krzeminsky's star is deformed. This fact gave new data on the mass of the Cen X-3, and the mass is several times as large as the previously estimated value. The behavior of the Her X-1 shows four kinds of clear time variation, and indicates the characteristics of an X-ray star. The Her X-1 is an X-ray pulser the same as Cen X-3, and is a close binary star. The opposite star is known as HZ-Her, and shows weaker luminosity than the intensity of X-ray from the Her X-1. Thirty-five day period was seen in the intensity variation of X-ray. The mechanism of X-ray pulsing can be explained by material flow into a neutron star. The energy spectrum from Her X-1 is different from that from the Cen X-3. Another X-ray star, Cyg X-1, is considered to be a black hole from its X-ray spectrum.

Aligning the goals of community-engaged research: why and how academic health centers can successfully engage with communities to improve health.

Science.gov (United States)

Michener, Lloyd; Cook, Jennifer; Ahmed, Syed M; Yonas, Michael A; Coyne-Beasley, Tamera; Aguilar-Gaxiola, Sergio

2012-03-01

Community engagement (CE) and community-engaged research (CEnR) are increasingly viewed as the keystone to translational medicine and improving the health of the nation. In this article, the authors seek to assist academic health centers (AHCs) in learning how to better engage with their communities and build a CEnR agenda by suggesting five steps: defining community and identifying partners, learning the etiquette of CE, building a sustainable network of CEnR researchers, recognizing that CEnR will require the development of new methodologies, and improving translation and dissemination plans. Health disparities that lead to uneven access to and quality of care as well as high costs will persist without a CEnR agenda that finds answers to both medical and public health questions. One of the biggest barriers toward a national CEnR agenda, however, are the historical structures and processes of an AHC-including the complexities of how institutional review boards operate, accounting practices and indirect funding policies, and tenure and promotion paths. Changing institutional culture starts with the leadership and commitment of top decision makers in an institution. By aligning the motivations and goals of their researchers, clinicians, and community members into a vision of a healthier population, AHC leadership will not just improve their own institutions but also improve the health of the nation-starting with improving the health of their local communities, one community at a time.

The giant branch of Omega Centauri. II. Mixing versus primordial abundance variations

International Nuclear Information System (INIS)

Norris, J.; Bessell, M.S.

1977-01-01

The lower giant branch of ω Centauri in the magnitude range 13< V<14 contains weak-G-band stars, CH stars, and CN stars; five stars from a sample of 20 members are clearly peculiar. There is also a positive correlation between the strength of the CN band at lambda3883 and the Ca II H and K lines in this sample, with the calcium lines being strongest in the CH and CN stars. All available BVRI data show that while the wide giant branch of ω Cen in the (V, B--V) -plane extends redward almost to that of 47 Tuc, there is a clear separation of ω Cen from 47 Tuc in the (V, R--I) -plane. This suggests that there are no stars on the giant branch of ω Cen with metal abundance as high as that in 47 Tuc. We obtain an upper limit [Fe/H]approx.-1.0 for a sample of approx.60 ω Cen giants brighter than V=14. This is surprising in view of the result of Freeman and Rodgers that there exist strong-lined RR Lyrae stars on the horizontal branch of ω Cen which are most easily understood in terms of 47 Tucanae-like abundances. While we offer no explanation for the strong-lined RR Lyrae stars, we suggest that the mixed stars on the giant branch of ω Cen are stronger lined than normal because of the effect of CN opacity on their atmospheric structure

Application of Casuarina equisetifolia needle for the removal of methylene blue and malachite green dyes from aqueous solution

Directory of Open Access Journals (Sweden)

Muhammad Khairud Dahri

2015-12-01

Full Text Available This study investigated the potential of Casuarina equisetifolia needle (CEN on the removal of two important dyes, methylene blue (MB and malachite green (MG, by batch adsorption experiments. Characterisation of CEN’s functional groups was done using Fourier Transform infrared spectroscopy while elemental analysis was carried out using CHNS analysis and X-ray fluorescence. The experiments were carried out by varying the adsorbent dosage, pH, ionic strength, contact time and initial dye concentration. The pseudo-second-order kinetics model best represented the experimental data for both CEN-MB and CEN-MG systems. The Weber–Morris intraparticle diffusion model showed that intraparticle diffusion is not the rate-limited step for both adsorbates, while the Boyd model suggested both systems could be controlled by film diffusion. The Langmuir, Freundlich and Dubinin–Radushkevich isotherm models were used for describing the adsorption process. Of these, the Langmuir model best represented both adsorbents systems (CEN-MB and CEN-MG giving maximum adsorption capacity (qm of 110.8 and 77.6 mg g−1, respectively, at 25 °C. Thermodynamics studies showed that both adsorption systems are spontaneous and endothermic.

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.

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

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...

Saúde vocal e mhealth: novas alternativas para antigos cenários

Directory of Open Access Journals (Sweden)

Christina Cesar Praça Brasil

2017-03-01

Full Text Available O mundo vivencia a era da comunicação e a saúde é uma das áreas beneficiadas pela inserção de novos recursos na vida das pessoas. Nesse contexto, as Tecnologias da Informação e Comunicação (TICs ocupam lugar de destaque e aplicam-se ao processamento, armazenamento, busca e transmissão de informação em formato digital, trazendo mais velocidade e confiabilidade à troca de informações(1,2. Na área da saúde, as TICs exercem papéis cada vez mais relevantes, estando presentes nas áreas clínica, gerencial, assistencial e de apoio à decisão dos profissionais e gestores. Nesse cenário, a tecnologia pode influenciar e modificar o modo de viver e de agir das pessoas, inclusive quando estas questões passam pelo contexto da promoção da saúde e do cuidado. Confirma-se, desta forma, a relevância da incorporação das tecnologias na assistência à saúde(3,4. No caso da saúde vocal, implica em um redimensionamento do autocuidado, uma vez que os acometimentos do aparelho fonador fazem parte do universo dos profissionais da voz, destacando-se os professores, sendo esta uma realidade que requer enfrentamento por meio de medidas políticas e tecnológicas, que ofereçam resolubilidade para esse problema tão recorrente. Um estudo(5 realizado com 351 professoras de escolas municipais do ensino fundamental de Fortaleza, Ceará, mostrou mais da metade delas apresentando mais de seis sintomas vocais, e que, mesmo considerando-se expostas a mais de seis fatores de risco vocal, nunca participaram de programa de saúde vocal, no que convergem outros estudos brasileiros(6,7. Ressalta-se que, além da escassez de ações educativas em saúde vocal, as políticas públicas brasileiras e a legislação voltadas à saúde do professor são falhas e restritas(8, e, por isso, chama-se atenção para a importância do desenvolvimento de campanhas de comunicação em saúde e em recursos tecnológicos voltados à saúde vocal, no sentido de refor

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

Tore Supra: a tokamak with superconducting coils for the toroidal field

International Nuclear Information System (INIS)

Turck, B.

1984-01-01

It is under construction on the site of CEN/Cadarache for the EURATOM-CEA Association. The design has been lead by a group including teams of the DRFC of Fontenay-aux-Roses and Grenoble and the DPh/PE-STI of CEN/Saclay [fr

Religião pós-moderna no Brasil? Postmodern religion in Brazil?

Directory of Open Access Journals (Sweden)

Lenny Francis Campos Alvarenga

2011-12-01

Full Text Available A presente Comunicação pretende analisar comparativamente alguns aspectos da definição de modernidade e pós-modernidade e sua aplicabilidade na análise do contexto religioso brasileiro. Partindo de autores como Giddens e Bauman, desenvolvemos a contextualização de suas teorias para uma realidade eminentemente européia. Depois, com autores como Canclini, Mariano e Prandi, dentre outros, que analisaram o contexto latino americano e, principalmente, brasileiro, procurou-se delinear o erro em se considerar que os conceitos de modernidade e pós-modernidade cabem à análise do cenário religioso brasileiro irrestritamente, como se este cenário fosse equivalente ao europeu, lugar no qual esses conceitos surgiram e foram delineados.Palavras-chave: Modernidade; Pós-modernidade, Cenário Religioso Brasileiro, Cenário Religioso Europeu.

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

Závislost cen akcií ropných společností na ceně ropy

Directory of Open Access Journals (Sweden)

Martin Širůček

2013-10-01

Full Text Available Purpose of the article: 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. Scientific aim: 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 last goal is identify the relationship between stock price of each other selected companies. Methodology: The methodology used in this paper is based on the quantification of relationship between company’s stock price and oil price. Used methods are ADF unit root test which testing stationary of selected time series and the correlation analysis of between selected companies each other and between company’s stock price and oil price. The last is the Granger causality test, that is provided by several lags. The time series is from August 2000 to December 2010, that is meaning round 2.500 observations. Findings: According to empirical analysis was confirmed that between oil company’s stocks price and oil price is strong structure and that the oil price affect the stock price of selected companies. The reaction of stock price on the oil price movement is general between 5 and 9 days. The strongest relationship between oil price and stock price was find by the Chevron and Petroleo Brasiliero. Other site the weakness relationship was find by the BP company. Conclusions: The most discuss problem is right set the lag length. In this case was the lag set on 10 day and closer analysis was made for lag from 1 to 10 days. Another limits is the time frequency. The place for updating this study is use a minute or hour frequency for the time series. Another possibility for updating is closer analysis of selected time period e.g. US invasion into Iraq, or BP ecological catastrophe 2010.

76 FR 37193 - Submission for OMB Review; Comment Request

Science.gov (United States)

2011-06-24

... before July 25, 2011 to be assured of consideration. Financial Crimes Enforcement Network (FinCEN) OMB... Money Services Business, 31 CFR 1022.380. Form: FinCEN Form 107. Abstract: Money services businesses... enforcement authorities, during the course of investigations involving financial crimes. Affected Public...

Monitoring of nuclear accidents

Energy Technology Data Exchange (ETDEWEB)

Schroeder, J.; Camps, J.

2010-07-01

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.

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.

77 FR 13046 - Customer Due Diligence Requirements for Financial Institutions

Science.gov (United States)

2012-03-05

... industries that have anti-money laundering (AML) program requirements under FinCEN's regulations. At this... effective anti-money laundering program.\\1\\ \\1\\ See, e.g., ``Anti-Money Laundering Programs for Insurance... BSA and FinCEN's implementing regulations or guard against money laundering.\\6\\ \\2\\ The BSA is...

The MetaLex Document Server : Legal Documents as Versioned Linked Data

NARCIS (Netherlands)

Hoekstra, R.; Aroyo, L.; Welty, C.; Alani, H.; Taylor, J.; Bernstein, A.; Kagal, L.; Noy, N.; Blomqvist, E.

2011-01-01

This paper introduces the MetaLex Document Server (MDS), an ongoing project to improve access to legal sources (regulations, court rulings) by means of a generic legal XML syntax (CEN MetaLex) and Linked Data. The MDS defines a generic conversion mechanism from legacy legal XML syntaxes to CEN

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

Digital Repository Service at National Institute of Oceanography (India)

Jayasree; 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...=ISO-8859-1 ...

EST Table: BP121749 [KAIKOcDNA[Archive

Lifescience Database Archive (English)

Full Text Available BP121749 ceN-5256 10/09/28 100 %/172 aa ref|NP_001036831.1| saposin-related [Bombyx...|GB16561-PA 10/09/10 44 %/178 aa gi|91077504|ref|XP_966852.1| PREDICTED: similar to saposin isoform 1 [Tribolium castaneum] FS791050 ceN- ...

EST Table: BP121763 [KAIKOcDNA[Archive

Lifescience Database Archive (English)

Full Text Available BP121763 ceN-5273 10/09/28 99 %/184 aa ref|NP_001036831.1| saposin-related [Bombyx ...GB16561-PA 10/09/10 43 %/192 aa gi|91077504|ref|XP_966852.1| PREDICTED: similar to saposin isoform 1 [Tribolium castaneum] FS791050 ceN- ...

Altered intrinsic functional coupling between core neurocognitive networks in Parkinson's disease

Directory of Open Access Journals (Sweden)

Deepti Putcha

2015-01-01

Full Text Available Parkinson's disease (PD is largely attributed to disruptions in the nigrostriatal dopamine system. These neurodegenerative changes may also have a more global effect on intrinsic brain organization at the cortical level. Functional brain connectivity between neurocognitive systems related to cognitive processing is critical for effective neural communication, and is disrupted across neurological disorders. Three core neurocognitive networks have been established as playing a critical role in the pathophysiology of many neurological disorders: the default-mode network (DMN, the salience network (SN, and the central executive network (CEN. In healthy adults, DMN–CEN interactions are anti-correlated while SN–CEN interactions are strongly positively correlated even at rest, when individuals are not engaging in any task. These intrinsic between-network interactions at rest are necessary for efficient suppression of the DMN and activation of the CEN during a range of cognitive tasks. To identify whether these network interactions are disrupted in individuals with PD, we used resting state functional magnetic resonance imaging (rsfMRI to compare between-network connectivity between 24 PD participants and 20 age-matched controls (MC. In comparison to the MC, individuals with PD showed significantly less SN–CEN coupling and greater DMN–CEN coupling during rest. Disease severity, an index of striatal dysfunction, was related to reduced functional coupling between the striatum and SN. These results demonstrate that individuals with PD have a dysfunctional pattern of interaction between core neurocognitive networks compared to what is found in healthy individuals, and that interaction between the SN and the striatum is even more profoundly disrupted in those with greater disease severity.

[Analysis of the patients who missed their appointments at the neurology clinic of the Marina Alta].

Science.gov (United States)

Morera-Guitart, J; Mas-Server, M A; Más-Sesé, G

To analyze the frequency, reasons and characteristics of patients who missed their appointments (NP) at the Neurology Clinic (CEN). To compare the characteristics of the NP with the patients who did not miss their appointment. Suggest measures to reduce avoidable causes of NP. During the period 1/10/99 to 30/4/2000 the cases of NP were prospectively recorded and compared with a sample of patients who attended the CEN during the same period. We analyze the data on age, sex, distance of home from CEN, diagnosis, type of consultation and date of last consultation. The NP were contacted by phone and asked why they had not gone for their appointments. The reasons given were then classified as avoidable or unavoidable. Of the 1,842 consultations scheduled, 19% were NP. When the NP and the patients who did attend were compared we found statistically significant differences regarding the distance home/CEN. According to the diagnosis, the NP had more 'symptoms/signs' and other MIA, whilst those who attended the clinic had more 'neuropathies' and 'awaiting diagnosis'. The commonest avoidable reasons (55.8%) for NP were forgetting, administrative error and communication failure, and for unavoidable reasons (44.2%) physical disability, other priorities and improvement. There is a large proportion of NP in the CEN of the Marina Alta. The distance from home to CEN (over 25 km) was the main factor affecting the rate of NP. Since 56% of the NP were due to avoidable causes, strategies could be designed to reduce this percentage. In the NP group, the main causes were forgetting, administrative errors and communication failure.

Reflection Group on 'Ethical Choices in Radiation Protection'

International Nuclear Information System (INIS)

Eggermont, G.

2000-01-01

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

X-ray astronomy

International Nuclear Information System (INIS)

Narayanan, M.S.

1976-01-01

The deployment of detectors outside the deleterious effects of the atmosphere by sending them in space vehicles, has been explained. This has thrown open the entire spectrum of the electromagnetic and particle radiation to direct observations, thus enlarging the vistas of the field of astronomy and astrophysics. The discovery of strong emitters of X-rays such as SCO X-1, NorX-2, transient sources such as Cen X-2, Cen X-4, Cen X-1, Supernova remnants Tan X-1, etc., are reported. The background of the X-ray spectrum as measured during two rocket flights over Thumba, India is presented. (K.B.)

76 FR 9268 - Financial Crimes Enforcement Network; Imposition of Special Measure Against the Lebanese Canadian...

Science.gov (United States)

2011-02-17

... Money Laundering Concern AGENCY: Financial Crimes Enforcement Network, Treasury (``FinCEN''), Treasury... financial institution of primary money laundering concern pursuant to 31 U.S.C. 5318A. FinCEN is issuing... Law 107-56. Title III of the USA PATRIOT Act amended the anti- money laundering provisions of the Bank...

78 FR 43234 - Agency Information Collection Activities; Submission to OMB for Reinstatement, With Change, of a...

Science.gov (United States)

2013-07-19

... be used by all filing institutions to report suspicious activity as of April 1, 2013. There are no... other industries. On March 29, 2012, FinCEN released guidance \\1\\ titled, ``Filing FinCEN's new Currency..., the Office of the Comptroller of the Currency, the Federal Deposit Insurance Corporation, and the...

An analysis of the small amplitude variations in the light curves of the R Coronae Borealis variables, S Apodis and UW Centauri

International Nuclear Information System (INIS)

Kilkenny, D.; Flanagan, C.

1983-01-01

The small amplitude variations in the light curves of the R CrB stars, S Aps and UW Cen, are examined. The periodicity of these variations appears to be changing rapidly in S Aps and slowly, if at all, in UW Cen. The evolutionary consequences of these effects are discussed. (author)

Center for Electron Nanoscopy, CEN-DTU

DEFF Research Database (Denmark)

Horsewell, Andy

- The projects - The physics Field Emission Gun very intense, highly coherent, stable electron source TEM 80 – 300 keV SEM ~1 – 30 keV Monochromator S/TEM TEM) Cs correction E-cell in-situ TEM, T0, reactive gasses, mass spectrometer, XRD - The microscopes E-TEM, A-TEM......, TEM, FEGSEM, FIB/FEGSEM, LVSEM, ESEM E-TEM Environmental cell, gas-surface interactions, in-situ heating, tomography A-TEM Analytical high resolution microscopy, S/TEM, HREM, EFTEM, EDS, HAADF FIB/FEGSEM Microscopy, EDS, EBSD in 3-dimensions 3D image reconstruction for microstructure, composition...

Neutron radiography at the SCK/CEN

International Nuclear Information System (INIS)

Tourwe, H.

1977-01-01

Neutron radiography has become in recent years a very important method of nondestructive testing in industry and research. The earliest practical application of neutron radiography has probably been the inspection of highly radioactive material: originally irradiated reactor fuels. Applications then progressed to other nuclear and industrial inspection problems. Neutron radiography and the conventional X-ray or gamma techniques are complementary. Some of the most important application fields of neutron radiography are: the detection of light elements (H, Li, B,...) with a very high scattering of absorption cross section for thermal neutrons; the nondestructive control of fuel before and after irradiation; controls where a distinction has to be made between isotopes of the same element ( 235 U and 238 U, 10 B and 11 B,...) and between components of a similar atomic number (Fe and Zn); the control of materials with a high density; the study of corrosion in closed structures; the control of the homogeneity of foreign materials in alloys,.... (author)

Superconducting magnet activities at CEN Saclay

International Nuclear Information System (INIS)

Lesmond, C.

1981-07-01

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)

Functional connectivity patterns reflect individual differences in conflict adaptation.

Science.gov (United States)

Wang, Xiangpeng; Wang, Ting; Chen, Zhencai; Hitchman, Glenn; Liu, Yijun; Chen, Antao

2015-04-01

Individuals differ in the ability to utilize previous conflict information to optimize current conflict resolution, which is termed the conflict adaptation effect. Previous studies have linked individual differences in conflict adaptation to distinct brain regions. However, the network-based neural mechanisms subserving the individual differences of the conflict adaptation effect have not been studied. The present study employed a psychophysiological interaction (PPI) analysis with a color-naming Stroop task to examine this issue. The main results were as follows: (1) the anterior cingulate cortex (ACC)-seeded PPI revealed the involvement of the salience network (SN) in conflict adaptation, while the posterior parietal cortex (PPC)-seeded PPI revealed the engagement of the central executive network (CEN). (2) Participants with high conflict adaptation effect showed higher intra-CEN connectivity and lower intra-SN connectivity; while those with low conflict adaptation effect showed higher intra-SN connectivity and lower intra-CEN connectivity. (3) The PPC-centered intra-CEN connectivity positively predicted the conflict adaptation effect; while the ACC-centered intra-SN connectivity had a negative correlation with this effect. In conclusion, our data demonstrated that conflict adaptation is likely supported by the CEN and the SN, providing a new perspective on studying individual differences in conflict adaptation on the basis of large-scale networks. Copyright © 2015 Elsevier Ltd. All rights reserved.

[Construction and identification of eukaryotic plasmid pGC-silencer-U6/Neo/GFP/ABCG2].

Science.gov (United States)

Yu, Yanping; Zhang, Song; Kong, Weijia

2010-09-01

To construct three short hairpin RNA (shRNA) interference expression plasmid vectors of human ABCG2 gene, to assay the expression of ABCG2 in a human nasopharyngeal carcinoma (NPC) cell line, CEN-2 cell line, and to detect the RNAi effect of shRNA. Targeting ABCG2 gene sequence, three plasmid expression vectors coding for shRNA and a control vector containing random DNA fragment were constructed. The recombinant plasmids were amplified in Ecoli. DH5 and then identified by restriction digestion, PCR and sequencing. The recombinant plasmids were transfected into CEN-2 cells. ABCG2 expression was assayed by real-time quantitative PCR and Western blot. The construction of pGC-silencer-U6/Neo/GFP/ABCG2 was succeed. The shRNA plasmids significantly down-regulated the ABCG2 expression in CEN-2 cells, at both mRNA level and protein level. Recombinant plasmid 1 had the strongest effect compared with plasmids 2 and 3 (P < 0.05), with an inhibition ratio of 75% at the mRNA level and 68% at the protein level. pGC-silencer-U6/Neo/GFP/ABCG2 has been successfully constructed and it can down-regulate ABCG2 expression after transfected into CEN-2 cells, which could help further studies of ABCG2 functions CEN-2 cell line and contribute to the NPC gene therapy.

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- ...

Planet Detectability in the Alpha Centauri System

Science.gov (United States)

Zhao, Lily; Fischer, Debra A.; Brewer, John; Giguere, Matt; Rojas-Ayala, Bárbara

2018-01-01

We use more than a decade of radial-velocity measurements for α {Cen} A, B, and Proxima Centauri from the High Accuracy Radial Velocity Planet Searcher, CTIO High Resolution Spectrograph, and the Ultraviolet and Visual Echelle Spectrograph to identify the M\\sin i and orbital periods of planets that could have been detected if they existed. At each point in a mass–period grid, we sample a simulated, Keplerian signal with the precision and cadence of existing data and assess the probability that the signal could have been produced by noise alone. Existing data places detection thresholds in the classically defined habitable zones at about M\\sin i of 53 {M}\\oplus for α {Cen} A, 8.4 {M}\\oplus for α {Cen} B, and 0.47 {M}\\oplus for Proxima Centauri. Additionally, we examine the impact of systematic errors, or “red noise” in the data. A comparison of white- and red-noise simulations highlights quasi-periodic variability in the radial velocities that may be caused by systematic errors, photospheric velocity signals, or planetary signals. For example, the red-noise simulations show a peak above white-noise simulations at the period of Proxima Centauri b. We also carry out a spectroscopic analysis of the chemical composition of the α {Centauri} stars. The stars have super-solar metallicity with ratios of C/O and Mg/Si that are similar to the Sun, suggesting that any small planets in the α {Cen} system may be compositionally similar to our terrestrial planets. Although the small projected separation of α {Cen} A and B currently hampers extreme-precision radial-velocity measurements, the angular separation is now increasing. By 2019, α {Cen} A and B will be ideal targets for renewed Doppler planet surveys.

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.

Directory of Open Access Journals (Sweden)

Jacqueline Araújo Fiuza

2016-01-01

Full Text Available 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.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.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 intracardial immunization.

Sistema de iluminação integrada em edificação lat 15 sul e potencial de uso de geração fotovoltaica

Directory of Open Access Journals (Sweden)

Luciane Durante

2014-12-01

Full Text Available Este artigo teve por objetivo geral avaliar o desempenho energético e luminoso de uma edificação considerando situações de proteção e exposição solar totais de suas aberturas. Especificamente, os objetivos foram: estimar curvas de isoiluminâncias a partir de medições e simulações; estimar a economia energética proporcionada por sistema de iluminação complementar controlado pelo usuário (Cenário 1- real e por sistema que desconsidera a contribuição da iluminação natural (Cenário 2- simulado; dimensionar áreas de painéis fotovoltaicos para atender a iluminação artificial desses Cenários e estimar as emissões evitadas pelo aproveitamento da luz natural. Os resultados demonstraram que o Cenário 1 apresentou valores médios de Contribuição de Iluminação Natural (CIN de 2% e economia de 10,5% do total de energia anual se comparado ao Cenário 2, que por sua vez proporcionou CIN até 17 vezes maior, caracterizando iluminação excessiva. Seriam necessários o cobrimento de 3% e 37% do telhado com painéis fotovoltaicos para suprimento da energia dos Cenários 1 e 2, respectivamente. A implantação do sistema fotovoltaico mostrou-se economicamente inviável, com tempo de retorno do investimento de 60 anos, superior à sua vida útil. Porém, ambientalmente, evidenciaram-se os benefícios, evitando-se a emissão de 689kgCO2/ano, equivalentes à neutralização processada por 4 unidades arbóreas no mesmo período.

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

hybridization (FISH) with centromere 17 (CEN-17) and TOP2A was performed on 120 normal breast specimens. The diploid CEN-17 copy number was reduced from the expected two signals in whole nuclei to an average of 1.68 signals per nucleus in cut sections of normal breast. Ploidy levels determined in normal breast...

Energy engineering. Standardization in the domain of coldness production; Genie energetique. Normalisation dans le domaine du froid

Energy Technology Data Exchange (ETDEWEB)

Legent, N. [Association Francaise de Normalisation (AFNOR), 92 - Paris-la-Defense (France)

2000-10-01

This paper deals with the recent advances in the domain of standardization and regulation of refrigeration and cold production systems used in the industry and in the commercial sector: 1 - international standardization; 2 - European standardization; 3 - international standardization in the domain of cold production (ISO/TC 86 'coldness and air conditioning', CEI 61C 'domestic refrigerating appliances', CEI 61D 'air-conditioning appliances for domestic and similar use', ISO/TC 104 'goods transportation containers'); 4 - European standardization in the domain of cold production (CEN/TC 182 'refrigerating systems - safety and environment requirements', CEN/TC 44 'household refrigerating appliances and refrigerating furniture for stores', CEN/TC 113 'heat pumps and air-conditioners', CEN/TC 141 'manometers and thermometers, measuring and recording means', CENELEC 61 'safety of domestic electrical appliances'); 5 - French standardization (international file, European file, French file, French standardization system); 6 - national standardization in other countries; 7 - regulations in the domain of cold production. (J.S.)

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

to MMR status by immunohistochemical analysis using validated antibodies for MLH1, MLH2, MSH6 and PMS2, and information on TOP1, CEN20, TOP2A and CEN17 status was previously published for this cohort. RESULTS: The observed TOP1 gene copy numbers in the 36 CRC test cohort were significantly greater (p

A importância das áreas ripárias para a sustentabilidade hidrológica do uso da terra em microbacias hidrográficas

Directory of Open Access Journals (Sweden)

Cláudia Mira Attanasio

2012-01-01

Full Text Available Zonas ripárias são áreas de saturação hídrica, permanente ou temporária, cuja principal função é a proteção dos recursos hídricos de uma microbacia. Essa pesquisa comparou a adequação do uso do solo de dois cenários de planejamento agrícola de uma microbacia: o cenário convencional, representando o método usualmente empregado, que apenas considera as classes de capacidade de uso da terra, e o cenário hidrológico, que inclui a delimitação e avaliação das zonas ripárias. Um estudo de caso foi realizado na Microbacia do Ribeirão São João (3.656 ha, no município de Mineiros do Tietê (São Paulo, Brasil. Mapas de Classe de Capacidade de Uso da Terra e de Adequação do Uso do Solo foram elaborados, utilizando o Sistema de Informação Geográfica (SIG, para a construção dos cenários convencional e do proposto. Excluindo a Área de Preservação Permanente (APP, o cenário convencional indicou que 59,0% da área destinada à agricultura está adequadamente utilizada, 28,2% está subutilizada e 2,6% está sobreutilizada. O cenário proposto ou hidrológico, com inclusão da identificação da zona ripária (24,9% da microbacia mostrou que muitas áreas que, no cenário convencional, possuem pouca restrição para o cultivo intensivo, como as classes II e III, são zonas ripárias, de sensibilidade hidrológica. Existem dentro dos limites da zona ripária 38,9% de classe de capacidade de uso III e 49,5% de classe IV. O planejador, desconsiderando a zona ripária, pode colocar em risco áreas vitais que, se degradadas, representam danos para a saúde e resiliência da microbacia.

Increased Default Mode Network Connectivity in Individuals at High Familial Risk for Depression.

Science.gov (United States)

Posner, Jonathan; Cha, Jiook; Wang, Zhishun; Talati, Ardesheer; Warner, Virginia; Gerber, Andrew; Peterson, Bradley S; Weissman, Myrna

2016-06-01

Research into the pathophysiology of major depressive disorder (MDD) has focused largely on individuals already affected by MDD. Studies have thus been limited in their ability to disentangle effects that arise as a result of MDD from precursors of the disorder. By studying individuals at high familial risk for MDD, we aimed to identify potential biomarkers indexing risk for developing MDD, a critical step toward advancing prevention and early intervention. Using resting-state functional connectivity MRI (rs-fcMRI) and diffusion MRI (tractography), we examined connectivity within the default mode network (DMN) and between the DMN and the central executive network (CEN) in 111 individuals, aged 11-60 years, at high and low familial risk for depression. Study participants were part of a three-generation longitudinal, cohort study of familial depression. Based on rs-fcMRI, individuals at high vs low familial risk for depression showed increased DMN connectivity, as well as decreased DMN-CEN-negative connectivity. These findings remained significant after excluding individuals with a current or lifetime history of depression. Diffusion MRI measures based on tractography supported the findings of decreased DMN-CEN-negative connectivity. Path analyses indicated that decreased DMN-CEN-negative connectivity mediated a relationship between familial risk and a neuropsychological measure of impulsivity. Our findings suggest that DMN and DMN-CEN connectivity differ in those at high vs low risk for depression and thus suggest potential biomarkers for identifying individuals at risk for developing MDD.

Test what you eat. Monitoring of radioactivity in the food chain

International Nuclear Information System (INIS)

2014-01-01

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.

Alexandria: towards an efficient centralised document management. More efficient business processes

International Nuclear Information System (INIS)

Couvreur, D.

2011-01-01

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.

Cyber Power for the Joint Force Commander: An Operational Design Framework

Science.gov (United States)

2014-03-26

b088-f3d477b4329c/en/ INSS +Memorandum_MAY2012_Nr117.pdf (accessed November 5, 2013). Cyberspace is described as three (human, logical, and physical...2012. http://mercury.ethz.ch/serviceengine/Files/ISN/152953/ipublicationdocument_singledocument/f3 e19de1-bcf7-4d07-b088-f3d477b4329c/en/ INSS

Introduction

International Nuclear Information System (INIS)

Van Walle, E.

2007-01-01

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

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.

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.

Social Sciences in Nuclear Research

International Nuclear Information System (INIS)

Eggermont, G.

2001-01-01

In 1998, an initiative was taken by SCK-CEN to include social sciences and humanities into its research programme. As a result, two working groups were created to discuss two broad items: (1) ethical choices in radiation protection; and (2) the role and culture of nuclear experts. The general objectives of SCK-CEN's social sciences programme are: (1) to improve the nuclear research approach by integrating social sciences - where needed- to solve complex problems in interaction with society; (2) to stimulate university collaboration with social disciplines in learning process towards transdisciplinary and improved social responsibility; (3) to improve the training of nuclear experts of SCK-CEN by gaining insight in their expert culture and implicit ethical choices; (4) to develop projects and an original transdisciplinary programme and project management by involving young and senior scientists, a variety of university opinions and relevant actors from industry and society. Along these lines, projects were developed on sustainability and nuclear development, transgenerational ethics related to disposal of long-lived radioactive waste and cognitive dissonance effects, legal aspects and liability, non-radiological aspects of nuclear emergencies and safety. Progress and major achievements in SCK-CEN's social science programme in 2000 are summarised

A DYNAMICAL STUDY OF SUSPECTED RUNAWAY STARS AS TRACES OF PAST SUPERNOVA EXPLOSIONS IN THE REGION OF THE SCORPIUS-CENTAURUS OB ASSOCIATION

International Nuclear Information System (INIS)

Jilinski, E.; Ortega, V. G.; Drake, N. A.; De la Reza, R.

2010-01-01

We address the question of identifying possible past supernovae events taking place in the region of the Scorpius-Centaurus (Sco-Cen) OB association based on stars proposed by Hoogerwerf et al. With this purpose, we obtained a time series of high-resolution spectra of six stars (HIP 42038, HIP 46950, HIP 48943, HIP 69491, HIP 76013, and HIP 82868) which, according to Hoogerwerf et al., may have been runaway stars with origins in the region of the Sco-Cen association. This also includes the nearby young open clusters IC 2391 and IC 2602. If confirmed, such supernovae events could, in principle, have played a role in triggering the formation of some small stellar groups thought to be associated with the Sco-Cen association. Our analysis shows that, except for HIP 48943, the remaining stars are spectroscopic binary systems. For HIP 46950 and HIP 69491, this was already noted by other authors. Our high-resolution spectra allowed us to obtain the radial velocities for all the stars which, combined with their proper motions and parallaxes from Hipparcos, provide a means to investigate, by retracing their orbits, if the Sco-Cen region was, in fact, the origin of these stars. We find that none of these systems originated in the Sco-Cen region. Exploring the possibility that the birthplace of the studied stars occurred in the clusters IC 2391 and IC 2602, we noticed that at the epoch of 2-3 Myr ago these clusters were at a distance comparable with their tidal radii.

Transgenerational propagation and quantitative maintenance of paternal centromeres depends on Cid/Cenp-A presence in Drosophila sperm.

Directory of Open Access Journals (Sweden)

Nitika Raychaudhuri

Full Text Available 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 gametes of Caenorhabditis elegans, and possibly in plants, centromere marking is independent of CenH3. Moreover, male gamete differentiation in animals often includes global nucleosome for protamine exchange that potentially could remove CenH3 nucleosomes. Here we demonstrate that the control of Cid loading during male meiosis is distinct from the regulation observed during the mitotic cycles of early embryogenesis. But Cid is present in mature sperm. After strong Cid depletion in sperm, paternal centromeres fail to integrate into the gonomeric spindle of the first mitosis, resulting in gynogenetic haploid embryos. Furthermore, after moderate depletion, paternal centromeres are unable to re-acquire normal Cid levels in the next generation. We conclude that Cid in sperm is an essential component of the epigenetic centromere mark on paternal chromosomes and it exerts quantitative control over centromeric Cid levels throughout development. Hence, the amount of Cid that is loaded during each cell cycle appears to be determined primarily by the preexisting centromeric Cid, with little flexibility for compensation of accidental losses.

X-ray emission from Centaurus A

International Nuclear Information System (INIS)

Terrell, J.

1984-01-01

The X-ray strength of Cen A (NGC 5128) was monitored for 10 years by Vela 5B, beginning in 1979. The 1973 to 1975 period of exceptional activity and strength was especially well covered, and was characterized by numerous rapid changes in intensity, in agreement with other data, indicating that the nucleus of Cen A is small but massive. 16 references, 3 figures

We give nature a helping hand. Three initiatives to improve the ecological context

International Nuclear Information System (INIS)

2015-01-01

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.

Avaliação ambiental de aterros sanitários de resíduos sólidos urbanos precedidos ou não por unidades de compostagem

Directory of Open Access Journals (Sweden)

Luciana Paulo Gomes

2015-09-01

Full Text Available RESUMONeste estudo de caso, comparou-se o potencial impacto ambiental gerado por dois cenários representativos de duas formas diferentes de gerenciamento de resíduos domésticos: o primeiro com central de triagem e aterro sanitário, e o segundo com central de triagem, compostagem e aterro sanitário. A análise dos dados baseou-se nas fases de estudo de uma Análise do Ciclo de Vida: definição de objetivo e escopo, análise de inventário, avaliação dos potenciais impactos ambientais, interpretação dos resultados e avaliação crítica. Foram elaborados fluxogramas dos processos produtivos, delimitadas as fronteiras dos sistemas e elaborados os diagramas de blocos e as planilhas de aspectos e impactos ambientais. No inventário efetuado, percebe-se que os dados são favoráveis ao Cenário 2 (aterro sanitário precedido de compostagem com relação à geração de resíduos e de emissões atmosféricas. No Levantamento dos Aspectos e Impactos Ambientais (LAIA do Cenário 1 (com triagem de recicláveis secos, em que todos os rejeitos são encaminhados para o aterro sanitário, verificou-se que 22,2% dos aspectos e impactos ambientais foram avaliados como significativos (ou seja, classificados como "intoleráveis" ou "sérios". No LAIA do Cenário 2, o resultado foi de 17,6% do total avaliado, cujos dados também são favoráveis a este Cenário. Em ambos os cenários, o aspecto significativo mais relevante foi relacionado às emissões atmosféricas geradas, identificadas nos processos de coleta e transporte de resíduos e de disposição final dos rejeitos.

Decision Strategy Research and Policy Support

International Nuclear Information System (INIS)

Hardeman, F.

2002-01-01

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

Mudanças Climáticas e as Formas de Ocupação Urbana: Processo de Criação de Cenários Socioambientais

Directory of Open Access Journals (Sweden)

Laura Machado de Mello Bueno

2012-06-01

Full Text Available Este artigo é fruto de reflexões desenvolvidas a partir de encontros entre pesquisadores vinculados ao PROARQ-FAU/UFRJ, ao Departamento de Geografia da PUC-Rio e ao Mestrado em Urbanismo da PUC Campinas, integrado ao Centro de Ciências Exatas, Ambientais e de Tecnologias – CEATEC. Por meio das pesquisas produzidas isoladamente por estas instituições, buscou-se, após um intenso trabalho de diálogo entre os pesquisadores, elaborar um método para novas investigações. Ele foi construído a partir das argumentações teóricas que levaram o grupo a uma busca pela integração de pesquisas de diferentes áreas e subáreas do conhecimento, concretizando-se em um projeto de pesquisa interinstitucional. Agora inicia-se a realização dessas pesquisas, com apoio da FAPESP e FAPERJ, que terão dois anos de duração. As investigações estão voltadas para espaços urbanos e periurbanos em suas dimensões socioambientais relacionadas a: comportamento de variáveis climáticas nos espaços urbanos consolidados; avaliação da qualidade da cobertura vegetal nas florestas contíguas a áreas urbanizadas; avaliação de intervenções em áreas de alta vulnerabilidade; localização dos investimentos públicos em habitação e infraestrutura em espaços não edificados; dinâmica das águas urbanas e sua relação com o uso e ocupação do solo e legislação urbanística. O artigo discute as bases teóricas e propõe questões metodológicas aplicáveis a estudos comparativos para a realização de cenários futuros visando a adaptação dos espaços urbanos e periurbanos a mudanças climáticas em curso. O intercâmbio entre os pesquisadores permitiu um primeiro avanço tendo como resultado a construção de um método aqui apresentado. O objetivo do artigo é a apresentação da metodologia para ampliação do debate referente às questões teóricas e metodológicas envolvidas.

Prognostic and predictive role of ESR1 status for postmenopausal patients with endocrine-responsive early breast cancer in the Danish cohort of the BIG 1-98 trial

DEFF Research Database (Denmark)

Ejlertsen, B; Aldridge, J; Nielsen, K V

2012-01-01

postmenopausal Danish women with early breast cancer randomly assigned to receive 5 years of letrozole, tamoxifen or a sequence of these agents in the Breast International Group 1-98 trial and who had ER ≥1% after central review. RESULTS: By FISH, 13.6% of patients had an ESR1-to-Centromere-6 (CEN-6) ratio ≥2...... (amplified), and 4.2% had ESR1-to-CEN-6 ratio...

Thermal neutron capture cross-section and resonance integral measurements of {sup 139}La(n, γ){sup 140}La and {sup 140}Ce(n, γ){sup 141}Ce using a Am-Be neutron source

Energy Technology Data Exchange (ETDEWEB)

Panikkath, Priyada; Mohanakrishnan, P. [Manipal University, Manipal Centre for Natural Sciences, Karnataka (India)

2017-03-15

Thermal neutron capture cross-sections and resonance integrals of {sup 139}La(n, γ){sup 140}La and {sup 140}Ce (n, γ){sup 141}Ce are measured with respect to reference reactions {sup 197}Au(n, γ){sup 198}Au and {sup 55}Mn(n, γ){sup 56}Mn using the neutron activation technique. Measurements are carried out using neutrons from an Am-Be source located inside a concrete bunker. Two different methods are used for determining self-shielding factors of activation foils as well as for finding the epithermal neutron spectrum shape factor. For {sup 139}La with reference to {sup 197}Au and {sup 55}Mn the measured thermal cross sections are 9.24 ± 0.25 b and 9.28 ± 0.37 b, respectively, while the measured resonance integrals are 12.18 ± 0.67 b and 11.81 ± 0.94 b, respectively. For {sup 140}Ce with reference to {sup 197}Au and {sup 55}Mn the measured thermal cross sections are 0.44 ± 0.01 b and 0.44 ± 0.02 b, respectively, while the measured resonance integrals are 0.55 ± 0.03 b and 0.54 ± 0.04 b, respectively. The present measurements are compared with earlier measurements and evaluations. Presently estimated values confirm the established {sup 139}La(n, γ){sup 140}La cross-sections. The presently measured thermal capture cross-section {sup 140}Ce(n, γ){sup 141}Ce, though lower than the evaluated data, is having higher accuracy compared to previous measurements with large uncertainties. The resonance integral measured is higher (like most previous measurements) than most evaluations requiring a revision of the evaluated data. (orig.)

SCK-CEN Genomic Platform: the microarray technology

International Nuclear Information System (INIS)

Benotmane, R.

2006-01-01

The human body contains approximately 10 14 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

Metody stanovení transferových cen

OpenAIRE

Jurčíková, Kateřina

2009-01-01

Following thesis focuses on analysis of using five basic transfer pricing methods mentioned in the OECD Transfer Pricing Guidelines in the conditions of the Czech Republic (comparable uncontrolled method, resale-price method, cost plus method, profit split method, transactional net margin method). There are mentioned the problems connected with application of these methods and also suggestions how to fix them. In this respect thesis contains comparable, functional and economic analysis. As a ...

Census 2000 Places (cen00pl02)

Data.gov (United States)

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

ON THE RR LYRAE STARS IN GLOBULARS. IV. ω CENTAURI OPTICAL UBVRI PHOTOMETRY

Energy Technology Data Exchange (ETDEWEB)

Braga, V. F.; Bono, G.; Buonanno, R. [Department of Physics, Università di Roma Tor Vergata, via della Ricerca Scientifica 1, I-00133 Roma (Italy); Stetson, P. B. [NRC-Herzberg, Dominion Astrophysical Observatory, 5071 West Saanich Road, Victoria BC V9E 2E7 (Canada); Dall’Ora, M. [INAF-Osservatorio Astronomico di Capodimonte, Salita Moiariello 16, I-80131 Napoli (Italy); Ferraro, I.; Iannicola, G.; Castellani, M. [INAF-Osservatorio Astronomico di Roma, via Frascati 33, I-00040 Monte Porzio Catone (Italy); Fiorentino, G. [INAF-Osservatorio Astronomico di Bologna, Via Ranzani 1, I-40127 Bologna (Italy); Freyhammer, L. M. [Jeremiah Horrocks Institute of Astrophysics, University of Central Lancashire, Preston PR1 2HE (United Kingdom); Marengo, M.; Neeley, J. [Department of Physics and Astronomy, Iowa State University, Ames, IA 50011 (United States); Valenti, E. [European Southern Observatory, Karl-Schwarzschild-Str. 2, D-85748 Garching bei Munchen (Germany); Calamida, A. [National Optical Astronomy Observatory, 950 N Cherry Avenue, Tucson, AZ 85719 (United States); Da Silva, R.; Fabrizio, M.; Giuffrida, G. [ASDC, via del Politecnico snc, I-00133 Roma (Italy); Degl’Innocenti, S. [INFN, Sezione di Pisa, Largo Pontecorvo 3, I-56127, Pisa (Italy); Di Cecco, A. [INAF-Osservatorio Astronomico di Teramo, Via Mentore Maggini snc, Loc. Collurania, I-64100 Teramo (Italy); Freedman, W. L. [Department of Astronomy and Astrophysics, University of Chicago, 5640 South Ellis Avenue, Chicago, IL 60637 (United States); and others

2016-12-01

New accurate and homogeneous optical UBVRI photometry has been obtained for variable stars in the Galactic globular cluster ω Cen (NGC 5139). We secured 8202 CCD images covering a time interval of 24 years and a sky area of 84 × 48 arcmin. The current data were complemented with data available in the literature and provided new, homogeneous pulsation parameters (mean magnitudes, luminosity amplitudes, periods) for 187 candidate ω Cen RR Lyrae (RRLs). Among them we have 101 RRc (first overtone) and 85 RRab (fundamental) variables, and a single candidate RRd (double-mode) variable. Candidate Blazhko RRLs show periods and colors that are intermediate between the RRc and RRab variables, suggesting that they are transitional objects. A comparison of the period distribution and the Bailey diagram indicates that RRLs in ω Cen show a long-period tail not present in typical Oosterhoff II (OoII) globulars. The RRLs in dwarf spheroidals and in ultra-faint dwarfs have properties between Oosterhoff intermediate and OoII clusters. Metallicity plays a key role in shaping the above evidence. These findings do not support the hypothesis that ω Cen is the core remnant of a spoiled dwarf galaxy. Using optical period–Wesenheit relations that are reddening-free and minimally dependent on metallicity we find a mean distance to ω Cen of 13.71 ± 0.08 ± 0.01 mag (semi-empirical and theoretical calibrations). Finally, we invert the I -band period–luminosity–metallicity relation to estimate individual RRLs’ metal abundances. The metallicity distribution agrees quite well with spectroscopic and photometric metallicity estimates available in the literature.

Shifted intrinsic connectivity of central executive and salience network in borderline personality disorder

Directory of Open Access Journals (Sweden)

Anselm eDoll

2013-10-01

Full Text Available Borderline personality disorder (BPD is characterized by stable instability of emotions and behavior and their regulation. This emotional and behavioral instability corresponds with a neurocognitive triple network model of psychopathology, which suggests that aberrant emotional saliency and cognitive control is associated with aberrant interaction across three intrinsic connectivity networks (ICN (i.e. the salience, default mode, and central executive network, SN, DMN, CEN. The objective of the current study was to investigate whether and how such triple network intrinsic functional connectivity (iFC is changed in patients with BPD. We acquired resting-state functional magnetic resonance imaging (rs-fMRI data from fourteen patients with BPD and sixteen healthy controls (HC. High-model order independent component analysis (ICA was used to extract spatiotemporal patterns of ongoing, coherent blood-oxygen-level-dependent (BOLD signal fluctuations from rs-fMRI data. Main outcome measures were iFC within networks (intra-iFC and between networks (i.e. network time course correlation inter-iFC.Aberrant intra-iFC was found in patients’ DMN, SN, and CEN, consistent with previous findings. While patients’ inter-iFC of the CEN was decreased, inter-iFC of the SN was increased. In particular, a balance index reflecting the relationship of CEN-and SN-inter-iFC across networks was strongly shifted from CEN to SN connectivity in patients. Results provide first preliminary evidence for aberrant triple network intrinsic functional connectivity in BPD. Our data suggest a shift of inter-network iFC from networks involved in cognitive control to those of emotion-related activity in BPD, potentially reflecting the persistent instability of emotion regulation in patients.

Social Sciences in Nuclear Research

Energy Technology Data Exchange (ETDEWEB)

Eggermont, G

2001-04-01

In 1998, an initiative was taken by SCK-CEN to include social sciences and humanities into its research programme. As a result, two working groups were created to discuss two broad items: (1) ethical choices in radiation protection; and (2) the role and culture of nuclear experts. The general objectives of SCK-CEN's social sciences programme are: (1) to improve the nuclear research approach by integrating social sciences - where needed- to solve complex problems in interaction with society; (2) to stimulate university collaboration with social disciplines in learning process towards transdisciplinary and improved social responsibility; (3) to improve the training of nuclear experts of SCK-CEN by gaining insight in their expert culture and implicit ethical choices; (4) to develop projects and an original transdisciplinary programme and project management by involving young and senior scientists, a variety of university opinions and relevant actors from industry and society. Along these lines, projects were developed on sustainability and nuclear development, transgenerational ethics related to disposal of long-lived radioactive waste and cognitive dissonance effects, legal aspects and liability, non-radiological aspects of nuclear emergencies and safety. Progress and major achievements in SCK-CEN's social science programme in 2000 are summarised.

Safety culture in a Belgian nuclear research centre from a social science point of view

International Nuclear Information System (INIS)

Fucks, I.; Hardeman, F.

2002-01-01

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)

Observations of three bright extragalactic radiosources at the 1.38 cm wavelength with the resolution up to 8''

International Nuclear Information System (INIS)

Berlin, A.B.; Korenev, Yu.V.; Lesovoj, V.Yu.; Parijskij, Yu.N.; Smirnov, V.I.; Soboleva, N.S.

1980-01-01

New observations of radiogalaxies in the shortest wavelength region of the RATAN-600 radiotelescope were performed using the 1.38-cm radiometer. One-dimentional radiobrightness distribution of 3C 405 (Cyg A) and Cen A as well as instantaneous spectra of the nuclear sources in 3C 111, 3C 405 and Cen A are presented. Spectra of nuclear components in radiosources 3C 111 and Cen A show marked variations at the time scale of the order of three years. Fluxes for the nuclear component of Cyg A at the wavelengths greater than 3.9 cm have decreased during the last 5 years. Wavelength independence is pointed out for brightness distribution in the main components of all sources. This contradicts to some extragalactic radiosources models in which radiation losses of relativistic electrons when moving from the hot ''spots'' to ''tails'' are suggested

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.

Cis-Acting Determinants Affecting Centromere Function, Sister-Chromatid Cohesion and Reciprocal Recombination during Meiosis in Saccharomyces Cerevisiae

OpenAIRE

Sears, D. D.; Hegemann, J. H.; Shero, J. H.; Hieter, P.

1995-01-01

We have employed a system that utilizes homologous pairs of human DNA-derived yeast artificial chromosomes (YACs) as marker chromosomes to assess the specific role (s) of conserved centromere DNA elements (CDEI, CDEII and CDEIII) in meiotic chromosome disjunction fidelity. Thirteen different centromere (CEN) mutations were tested for their effects on meiotic centromere function. YACs containing a wild-type CEN DNA sequence segregate with high fidelity in meiosis I (99% normal segregation) and...

CATAMARAN targeted at innovative radiopharmacy

International Nuclear Information System (INIS)

Impens, N.; Aerts, A.

2010-01-01

In cancer therapy there is a great need for specific treatments: therapies that kill cancer cells selectively without affecting the healthy cells. In the CATAMARAN project (Cancer Targeting Molecules Attached to Radionuclides) SCK-CEN develops, in a preclinical trial, products that deliver the right radiation doses at the right place in the human body. With the new multidisciplinary expertise that has been built up in the project, SCK-CEN is contributing to new medical applications of radiation.

How does the average Belgian view nuclear technology? Barometer assesses knowledge and risk perception

International Nuclear Information System (INIS)

Turcanu, C.; Perko, T.

2011-01-01

Irrespective of the choices made in the future, questions about nuclear safety, radiation protection and waste management will always be of topical interest. SCK-CEN has consciously opted for social research on risk perception, sustainable development, and communication. SCK-CEN founded the Barometer in 2002 in order to keep both feet firmly planted in society: a regular, large-scale survey amongst the Belgian population on radiation and nuclear technology. The findings of the third edition were published in 2010.

The Centaurus cluster of galaxies. Pt. 3

International Nuclear Information System (INIS)

Lucey, J.R.; Currie, M.J.; Dickens, R.J.

1986-05-01

Previous work by the authors has shown that the Centaurus cluster (α = 12sup(h) 47 delta = -41 0 ) is composed of two velocity components, Cen30 (mean velocity 3000 km s -1 ) and Cen45 (mean velocity 4500 km s -1 ), which very probably lie within one cluster. In this paper the internal structure of the cluster is described and the spatial and velocity distributions of the different galaxy types within the cluster are discussed. (author)

NOAA Weather Radio

Science.gov (United States)

7SSNNN NUT-Cen 5SSNNN BROCCOLI-E 6SSNNN RICE-NW1/3 1SSNNN NUT-SW 7SSNNN CAULIFLOWER-N 2SSNNN RICE-SE2/3 9SSNNN PEA-NW 1SSNNN CAULIFLOWER-SW 7SSNNN BEET-NE2/3 3SSNNN PEA-Cen 5SSNNN CAULIFLOWER-SCen 8SSNNN BEET -SW1/3 7SSNNN PEA-SE 9SSNNN CAULIFLOWER-SE 9SSNNN (in 5 parts) (in 6 parts) (in 7 parts) COUNTY SAME

The chemical inhomogeneity of omega Centauri

International Nuclear Information System (INIS)

Freeman, K.C.; Rodgers, A.W.

1975-01-01

Observations of 25 RR Lyrae stars in ω Cen have revealed a diversity in the composition of these stars. The composition spread explains the ill-defined giant branch and the existence of M stars in the cluster. The diversity may be due either to variable amounts of giant-branch mixing or to metal enrichment of protostellar gas during the cluster collapse. Among other consideractions, the uniqueness of ω Cen leads us to prefer the latter hypothesis

Beyond Proxima b: Characterizing the X-ray Environments of the Next Three Nearest Potentially Habitable Exoplanets

Science.gov (United States)

Guinan, Edward

2017-09-01

The discovery that Prox Cen hosts a potentially habitable Earth-size planet motivated the study of the next three nearest HZ planets, whose host stars all lie within 4.5 pc. X-ray observations are requested of Kapteyn s Star = KS (M1 V; 3.9 pc), Wolf 1061 (M3V; 4.3 pc), and a third not yet publicly announced star discussed in the proposal. KS hosts a HZ super-earth: Kapteyn b ( 4.8 ME). Wolf 1061 hosts three super-earths - one in the HZ: Wolf 1061c ( 4.3 ME). Unlike Prox Cen s extensive X-ray observations (> 400 ks), the X-ray properties of these stars are poorly constrained. In our study of Prox b (Ribas et al. 2016), Prox Cen s X-ray (& UV) radiation strongly affect (via photoionization/photo-dissociation) the planet s atmosphere, water inventory & ultimate habitability.

Nuclear Research and Society

Energy Technology Data Exchange (ETDEWEB)

Eggermont, G

2000-07-01

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.

Nuclear Research and Society

International Nuclear Information System (INIS)

Eggermont, G.

2000-01-01

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

Decision strategy research: system analysis

International Nuclear Information System (INIS)

Carle, B.

2000-01-01

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

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.

Probing the conformation of a conserved glutamic acid within the Cl- pathway of a CLC H+/Cl- exchanger.

Science.gov (United States)

Vien, Malvin; Basilio, Daniel; Leisle, Lilia; Accardi, Alessio

2017-04-03

The CLC proteins form a broad family of anion-selective transport proteins that includes both channels and exchangers. Despite extensive structural, functional, and computational studies, the transport mechanism of the CLC exchangers remains poorly understood. Several transport models have been proposed but have failed to capture all the key features of these transporters. Multiple CLC crystal structures have suggested that a conserved glutamic acid, Glu ex , can adopt three conformations and that the interconversion of its side chain between these states underlies H + /Cl - exchange. One of these states, in which Glu ex occupies the central binding site (S cen ) while Cl - ions fill the internal and external sites (S int and S ext ), has only been observed in one homologue, the eukaryotic cmCLC. The existence of such a state in other CLCs has not been demonstrated. In this study, we find that during transport, the prototypical prokaryotic CLC exchanger, CLC-ec1, adopts a conformation with functional characteristics that match those predicted for a cmCLC-like state, with Glu ex trapped in S cen between two Cl - ions. Transport by CLC-ec1 is reduced when [Cl - ] is symmetrically increased on both sides of the membrane and mutations that disrupt the hydrogen bonds stabilizing Glu ex in S cen destabilize this trapped state. Furthermore, inhibition of transport by high [Cl - ] is abolished in the E148A mutant, in which the Glu ex side chain is removed. Collectively, our results suggest that, during the CLC transport cycle, Glu ex can occupy S cen as well as the S ext position in which it has been captured crystallographically and that hydrogen bonds with the side chains of residues that coordinate ion binding to S cen play a role in determining the equilibrium between these two conformations. © 2017 Vien et al.

Análise de custos operacionais e dos atrasos de aeronaves na Área Terminal São Paulo (TMA-SP

Directory of Open Access Journals (Sweden)

Erico Soriano Martins Santana

2009-10-01

Full Text Available

O artigo desenvolve uma avaliação comparativa do atraso de aeronaves em vôo na Área Terminal de São Paulo (TMA-SP, a região aérea mais congestionada no Brasil, e de seus impactos em termos de custos. Diferentes cenários de fluxo foram construídos e simulados. A avaliação econômica foi baseada no custo operacional médio de vôo na TMA-SP. A análise foi concentrada nas operações de vôo e de solo que tiveram origem ou destino nos aeroportos de Congonhas, Guarulhos ou Viracopos, os três aeroportos mais movimentados da TMA-SP. O software SIMMOD Plus 4.0! foi utilizado para simular as operações no espaço aéreo e no lado aéreo dos aeroportos. Cinco cenários operacionais foram analisados. Destes, dois cenários — um considerando a operação de uma terceira pista no Aeroporto de Guarulhos e o outro considerando a remoção de aeronaves lentas do Aeroporto de Congonhas —, resultaram considerável redução no congestionamento e atraso na TMA-SP. A partir desses resultados, três novos cenários admitindo 10%, 20% e 30% de transferência de demanda de Congonhas para Guarulhos foram construídos e analisados. Os cenários propostos reduziram o atraso nos procedimentos de chegada e de partida dos vôos, diminuindo o custo operacional das empresas aéreas assim como aumentando a capacidade do sistema TMA-SP.

Recent advances in the designing and the equipment of high activity laboratories; Progres recents dans la conception et l'equipement des laboratoires de haute activite

Energy Technology Data Exchange (ETDEWEB)

Bazire, R; Duhamel, F [Commissariat a l' Energie Atomique, Saclay (France).Centre d' Etudes Nucleaires

1960-07-01

The authors described the general principles governing the design of a laboratory for experimenting and handling radioactive substances. The difficulties encountered are of two types: 1) those due to the dangers of external irradiation; 2) those due to the dangers of internal contamination. As an example, the authors describe the French achievements in this field and in particular: - the high-activity laboratories at Saclay; - the laboratory for the examination of irradiated fuels at Saclay; - the 'hot' laboratory of the CEN-Grenoble; - the alpha, beta and gamma laboratories of the CEN-Fontenay-aux-Roses. Finally, the report describes the protective materials used for these installations. (author) [French] Les auteurs exposent quels sont les principes generaux qui president a la conception d'un laboratoire a des travaux et des manipulations sur des substances radioactives. Les difficultes a surmonter sont de deux ordres: 1) celles qui proviennent du danger d'irradiation externe; 2) celles qui proviennent du danger de contamination interne. A titre d'exemple, les auteurs decrivent les realisations francaises dans ce domaine et en particulier: - le laboratoire de haute activite de Saclay, - le laboratoire d'examen des combustibles irradies de Saclay, - le laboratoire chaud du CEN-Grenoble, - les laboratoires alpha, beta, gamma du CEN-Fontenay-aux-Roses. Enfin, le rapport decrit les materiaux de protection mis en oeuvre pour ces realisations. (auteur)

Decommissioning nuclear installations

International Nuclear Information System (INIS)

Dadoumont, J.

2010-01-01

When a nuclear installation is permanently shut down, it is crucial to completely dismantle and decontaminate it on account of radiological safety. The expertise that SCK-CEN has built up in the decommissioning operation of its own BR3 reactor is now available nationally and internationally. Last year SCK-CEN played an important role in the newly started dismantling and decontamination of the MOX plant (Mixed Oxide) of Belgonucleaire in Dessel, and the decommissioning of the university research reactor Thetis in Ghent.

Animal welfare strengthens the quality of research. 3 million euros for a ultramodern animal facility

International Nuclear Information System (INIS)

2015-01-01

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.

Neutron Dosimetry

International Nuclear Information System (INIS)

Vanhavere, F.

2001-01-01

The objective of SCK-CEN's R and D programme on neutron dosimetry is to improve the determination of neutron doses by studying neutron spectra, neutron dosemeters and shielding adaptations. In 2000, R and D focused on the contiued investigation of the bubble detectors type BD-PND and BDT, in particular their sensitivity and temperature dependence; the updating of SCK-CEN's criticality dosemeter, the investigation of the characteristics of new thermoluminescent materials and their use in neutron dosemetry; and the investigation of neutron shielding

Annual scientific report 1975

International Nuclear Information System (INIS)

Billiau, R.; Bobin, K.; Michiels, G.; Proost, J.

1976-01-01

The main activities of SCK/CEN during 1975 are reported in individual summaries. Field 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

Annual scientific report 1974

International Nuclear Information System (INIS)

Billiau, R.; Bobin, K.; Michiels, G.; Proost, J.

1975-01-01

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

Inspiration fuels space research in Congo. Combating malnutrition with Spirulina, the green protein source

International Nuclear Information System (INIS)

2016-01-01

In Congo, around 43% of all children under the age of five suffer from chronic malnutrition. The result is a high infant mortality rate./ Researchers from the Belgian Nuclear research Center SCK•CEN started working on the cultivation of spirulina, a type of algae rich in vitamins and minerals that are essential for combating chronic malnutrition in children. This Inspiration project is the first in a series and signals the ambition of SCK•CEN to contribute towards a balanced and sustainable world.

Photometric Survey to Search for Field sdO Pulsators

Science.gov (United States)

Johnson, C.; Green, E.; Wallace, S.; O'Malley, C.; Amaya, H.; Biddle, L.; Fontaine, G.

2014-04-01

We present the results of a campaign to search for subdwarf O (sdO) star pulsators among bright field stars. The motivation for this project is the recent discovery by Randall et al. (2011) of four rapidly pulsating sdO stars in the globular cluster ω Cen, with Teff near 50,000 K, 5.4 -0.1 and similar temperatures and gravities. To date, we have found no detectable pulsations at amplitudes above 0.08% (4 times the mean noise level) in any of the 36 field sdO stars that we observed. The presence of pulsations in ω Cen sdO stars and their apparent absence in seemingly comparable field sdO stars is perplexing. While very suggestive, the significance of this result is difficult to assess more completely right now due to remaining uncertainties about the temperature width and purity of the ω Cen instability strip and the existence of any sdO pulsators with weaker amplitudes than the current detection limit in globular clusters.

Deconvolving the Nucleus of Centaurus A Using Chandra PSF Library

Science.gov (United States)

Karovska, Margarita

2000-01-01

Centaurus A (NGC 5128) is a giant early-type galaxy containing the nearest (at 3.5 Mpc) radio-bright Active Galactic Nucleus (AGN). Cen A was observed with the High Resolution Camera (HRC) on the Chandra X-ray Observatory on several occasions since the launch in July 1999. The high-angular resolution (less than 0.5 arcsecond) Chandra/HRC images reveal X ray multi-scale structures in this object with unprecedented detail and clarity, including the bright nucleus believed to be associated with a supermassive black hole. We explored the spatial extent of the Cen A nucleus using deconvolution techniques on the full resolution Chandra images. Model point spread functions (PSFs) were derived from the standard Chandra raytrace PSF library as well as unresolved point sources observed with Chandra. The deconvolved images show that the Cen A nucleus is resolved and asymmetric. We discuss several possible causes of this extended emission and of the asymmetries.

Calcium abundance of RR Lyrae variables in ω Centaurri and M22

International Nuclear Information System (INIS)

Manduca, A.; Bell, R.A.

1978-01-01

Freeman and Rodgers observed 25 RR Lyrae variables in ω Cen and reported a range in calcium abundance from [Ca/H] = -0.4 to -1.6. This result, however, has been difficult to reconcile with other recent studies of the giant branch of ω Cen. with a model-atmosphere grid covering the physical parameters expected for RR Lyrae variables, Freeman and Rodgers's data were reanalyzed, by use of their basic method of theoretical relations among the equivalent widths of the K, H4b, and H delta lines and [Ca/H] but with an alternative, synthetic-spectrum approach to the calibration of these relations. When interpreted with the present calibration, the data yield a range in calcium abundance from [Ca/H] = -1.0 to -1.9 for the ω Cen RR Lyrae variables. This calibration applied to the M22 data of Butler et al gives [Ca/H] = -1.25 for M22. 2 figures, 1 table

EFFECT OF IMPERMEANT CRYOPROTECTANTS ON THE IN VITRO VIABILITY OF FROZEN SPERMATOZOA OF SWISS-ALBINA AND BALB/C MICE (Mus musculus EFEITO DE CRIOPROTETORES IMPERMEÁVEIS SOBRE A VIABILIDADE IN VITRO DE ESPERMATOZOIDES CONGELADOS DE CAMUNDONGOS (Mus musculus DAS LINHAGENS SWISS-ALBINA e BALB/c

Directory of Open Access Journals (Sweden)

Antonio Sergio Varela Junior

2009-12-01

Full Text Available

Neutron Dosimetry

Energy Technology Data Exchange (ETDEWEB)

Vanhavere, F

2001-04-01

The objective of SCK-CEN's R and D programme on neutron dosimetry is to improve the determination of neutron doses by studying neutron spectra, neutron dosemeters and shielding adaptations. In 2000, R and D focused on the contiued investigation of the bubble detectors type BD-PND and BDT, in particular their sensitivity and temperature dependence; the updating of SCK-CEN's criticality dosemeter, the investigation of the characteristics of new thermoluminescent materials and their use in neutron dosemetry; and the investigation of neutron shielding.

Allelic frequencies of two microsatellite loci in four populations of brown trout (Salmo trutta)

OpenAIRE

EDIT VARDHAMI; ANILA HODA; ADIOLA BIBA; MANUELA GUALTIERI; MASSIMO MECATTI; AGIM REXHEPI

2014-01-01

Two microsatellite loci, Str60Inra and Ssa197, were PCR amplified on 30 individuals for each populations of brown trout (Salmo trutta). A total of 120 individuals were selected from rivers of the Florence province (Italy), Valbona and Cen (Albania), Lepenci (Kosovo). There were identified 32 different alleles for Str60Inra and 41 for the locus Ssa197. Mean number of alleles ranged from 9 (Cen) to 20.5 (Florence). The mean observed and expected heterosygosities values were 0.329 and 0.755, res...

Integrated Pest Management as European standard – is it possible?

Directory of Open Access Journals (Sweden)

Lisa Nilsen

2011-08-01

Full Text Available As part of the work within the European Committee for Standardization (CEN, standards for conservation of cultural property are being developed in CEN/TC (Technical Committee 346, Conservation of Cultural Property. In Working Group 4 Environment, a draft is being prepared to create a proposal for standardised Integrated Pest Management. The author of this paper welcomes delegates to the Meeting on Cultural Heritage Pests in Piacenza to contribute to the discussion regarding standardised methods for pest control in the cultural heritage sector.

Are Bacteria more dangerous in space?

International Nuclear Information System (INIS)

Leys, N.; Baatout, S.

2010-01-01

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.

SmartGuia: Shopping Assistant for Blind People

OpenAIRE

Duarte, Karen Soares

2014-01-01

Tendo em conta as limita c~oes das pessoas com de ci^encia, o presente trabalho pretende agir num cen ario espec co melhorando a qualidade da vidas destas pessoas. Integrados num grupo de investiga c~ao em Internet das Coisas, colabor amos com tr^es institui c~oes, levantando requisitos no que concerne a aplicabilidade da Internet das Coisas para ajudar pessoas com de ci^encia. Depois disso, escolhemos e foc amo-nos no plano de trabalho adotado, sendo um dos cen arios iden...

A Hard X-Ray Power-Law Spectral Cutoff in Centaurus X-4

DEFF Research Database (Denmark)

Chakrabarty, Deepto; Tomsick, John A.; Grefenstette, Brian W.

2015-01-01

The low-mass X-ray binary Cen X-4 is the brightest and closest (<1.2 kpc) quiescent neutron star transient. Previous 0.5-10 keV X-ray observations of Cen X-4 in quiescence identified two spectral components: soft thermal emission from the neutron star atmosphere and a hard power-law tail of unkno...... behavior with PSR J1023+0038, IGR J18245-2452, and XSS J12270-4859, which have shown transitions between LMXB and radio pulsar modes at a similar X-ray luminosity....

Experiências de Turismo Cervejeiro em Curitiba, PR

OpenAIRE

Camila Bizinelli; Franciele Cristina Manosso; José Manoel Gonçalves Gândara; Vander Valduga

2013-01-01

O Turismo Cervejeiro tornou-se um segmento turístico emergente que vem ganhando destaque no Brasil. Nesse cenário observa-se o crescimento e o surgimento de centros cervejeiros por todo país, cenário em que aparece a cidade de Curitiba, definida como objeto desse estudo. A partir disso, foi proposta a avaliação de alguns bares e casas especializadas na comercialização de cervejas especiais e artesanais e que são componentes da ofe...

Educational settings in the management of patients with heart failure Escenarios de educación para el manejo de pacientes con insuficiencia cardiaca Cenários de educação para o manejo de pacientes com insuficiência cardíaca

Directory of Open Access Journals (Sweden)

Graziella Badin Aliti

2007-04-01

tratamiento farmacológico y no-farmacológico. En este artículo revisaremos información contemporánea, abordando los diversos escenarios de educación para el manejo del pacientes con ICC.A insuficiência cardíaca congestiva (ICC apresenta, além da magnitude dos dados epidemiológicos, características relevantes, incluindo hospitalizações freqüentes devidas à exacerbação dos sinais e sintomas, que devem ser mais amplamente abordados para reduzir o impacto negativo da doença sobre o sistema público de saúde. Com o advento dos vários ensaios clínicos na área de ICC, o tratamento da doença passou a ser mais complexo, necessitando de uma estrutura organizada para o atendimento de pacientes por ela acometidos. A educação, nesse contexto, é considerada essencial para reduzir a morbimortalidade. O cenário, para o início ou a continuidade do processo educativo, pode ser hospitalar (internação, ambulatorial, domiciliar, hospital-dia ou, ainda, ser uma combinação desses ambientes. Os principais pesquisadores nessa área reconhecem e estimulam a investigação de outros caminhos, que melhorem os resultados no tratamento farmacológico e não-farmacológico. Neste artigo, revisaremos dados contemporâneos, abordando os diversos cenários da educação para o manejo de pacientes com ICC.

Fuel research for subcritical and critical GEN-IV systems cooled by heavy liquid metal

International Nuclear Information System (INIS)

Sobolev, V.; Verwerft, M.

2009-01-01

The participation of the Belgian Nuclear Research Centre SCK-CEN in the worldwide GEN-IV research can be considered as an opportunity. Today's GEN-IV research at SCK-CEN is mainly driven by the interests of the project MYRRHA (Multipurpose hYbrid Research Reactor for High-tech Applications). The main goal of this project is to build at SCK-CEN in Mol a new generation fast spectrum, subcritical, research and materials testing reactor MYRRHA driven by a high-energy proton accelerator. This GEN-IV MTR is cooled by heavy liquid metal (Pb-Bi) and will be used for the ADS concept demonstration, testing and qualification of new fuels, transmutation targets and innovative materials. On the European scale, MYRRHA is integrated in the Euratom FP6 Integrated Project (IP) EUROTRANS (EUROpean research programme for TRANSmutation of high level nuclear waste in an accelerator driven system), as the small-scale experimental machine for transmutation demonstration called XT-ADS. Last but not least, this experimental facility will also demonstrate the technological feasibility of the LFR (Lead-cooled Fast Reactor) GEN-IV concept; in EU the LFR design studies are performed in the framework of the Euratom FP6 ELSY (European Lead-cooled SYstem) project, where SCK-CEN is a partner. Among the research needed to ensure a safe and reliable operation of the MYRRHA/XT ADS reactor, the development and qualification of fuel and cladding materials have been recognized as one of the main key issues to be addressed

Structure, Function, and Evolution of Rice Centromeres

Energy Technology Data Exchange (ETDEWEB)

Jiang, Jiming

2010-02-04

The centromere is the most characteristic landmark of eukaryotic chromosomes. Centromeres function as the site for kinetochore assembly and spindle attachment, allowing for the faithful pairing and segregation of sister chromatids during cell division. Characterization of centromeric DNA is not only essential to understand the structure and organization of plant genomes, but it is also a critical step in the development of plant artificial chromosomes. The centromeres of most model eukaryotic species, consist predominantly of long arrays of satellite DNA. Determining the precise DNA boundary of a centromere has proven to be a difficult task in multicellular eukaryotes. We have successfully cloned and sequenced the centromere of rice chromosome 8 (Cen8), representing the first fully sequenced centromere from any multicellular eukaryotes. The functional core of Cen8 spans ~800 kb of DNA, which was determined by chromatin immunoprecipitation (ChIP) using an antibody against the rice centromere-specific H3 histone. We discovered 16 actively transcribed genes distributed throughout the Cen8 region. In addition to Cen8, we have characterized eight additional rice centromeres using the next generation sequencing technology. We discovered four subfamilies of the CRR retrotransposon that is highly enriched in rice centromeres. CRR elements are constitutively transcribed and different CRR subfamilies are differentially processed by RNAi. These results suggest that different CRR subfamilies may play different roles in the RNAi-mediated pathway for formation and maintenance of centromeric chromatin.

MAGNESIUM ISOTOPE RATIOS IN ω CENTAURI RED GIANTS

International Nuclear Information System (INIS)

Da Costa, G. S.; Norris, John E.; Yong, David

2013-01-01

We have used the high-resolution observations obtained at the Anglo-Australian Telescope with Ultra-High Resolution Facility (R ∼ 100,000) and at Gemini-S with b-HROS (R ∼ 150,000) to determine magnesium isotope ratios for seven ω Cen red giants that cover a range in iron abundance from [Fe/H] = –1.78 to –0.78 dex, and for two red giants in M4 (NGC 6121). The ω Cen stars sample both the ''primordial'' (i.e., O-rich, Na- and Al-poor) and the ''extreme'' (O-depleted, Na- and Al-rich) populations in the cluster. The primordial population stars in both ω Cen and M4 show ( 25 Mg, 26 Mg)/ 24 Mg isotopic ratios that are consistent with those found for the primordial population in other globular clusters with similar [Fe/H] values. The isotopic ratios for the ω Cen extreme stars are also consistent with those for extreme population stars in other clusters. The results for the extreme population stars studied indicate that the 26 Mg/ 24 Mg ratio is highest at intermediate metallicities ([Fe/H] 26 Mg in the extreme population stars is notably higher than that of 25 Mg, in contrast to model predictions. The 25 Mg/ 24 Mg isotopic ratio in fact does not show any obvious dependence on either [Fe/H] or [Al/Fe] nor, intriguingly, any obvious difference between the primordial and extreme population stars.

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

Synthesis of clad motion experiments interpretation: codes and validation

International Nuclear Information System (INIS)

Papin, J.; Fortunato, M.; Seiler, J.M.

1983-04-01

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

Perspectives concerning radioactive waste management

International Nuclear Information System (INIS)

Noynaert, L.

2013-01-01

The article presents a general overview of the principles of radioactive waste management as established by the International Atomic Energy Agency. Subsequently, research and development related to radioactive waste management at the Belgian Nuclear Research Center SCK·CEN is discussed. Different topical areas are treated including radioactive waste characterisation, decontamination and the long-term management of radioactive waste. The decommissioning of the BR3 reactor and the construction and the exploitation of the underground research laboratory HADES are cited as examples of the pioneering role that SCK·CEN has played in radioactive waste management.

Utilidad de los arquetipos ISO 13606 para representar modelos clínicos detallados

OpenAIRE

Serrano, Pablo; Moner Cano, David; Sebastian, Tomás; Maldonado Segura, José Alberto; Navalón, Rafael; Robles Viejo, Montserrat; Gómez, Ángel

2009-01-01

Objetivo: Evaluar la utilidad de los Arquetipos ISO/CEN 13606 y openEHR en la representación de modelos clínicos detallados. Metodología: como editores de arquetipos se utilizaron LinkERH para ISO/CEN 13606 y los editores de Ocean Informatics y LiU para openEHR. Como caso de uso se representaron los conjuntos de datos identificados en los modelos locales de tres sistemas (hospital, UCI y atención primaria) en el dominio de la úlcera por decúbito, abarcando la observación, evalu...

Safety of food contact silicone rubber: Liberation of volatile compounds from soothers and teats

DEFF Research Database (Denmark)

Lund, Kirsten H.; Petersen, Jens Højslev

2002-01-01

The release of volatile compounds from soothers and teats made from silicone rubber has been investigated. Firstly, measurements of the total release of volatiles were performed according to the method in the draft European standard (CEN). Weight losses of 0.17-0.80% after four hours at 200 degrees......C were observed using gravimetric measurements. One product had a weight loss above the proposed CEN limit of 0.5%. Secondly, the volatile compounds were identified using a thermal desorption/cold trap injector on a gas chromatograph equipped with infrared spectroscopic (IR) and mass spectrometric (MS...

WFC3/UVIS image skew

Science.gov (United States)

Petro, Larry

2009-07-01

This proposal will provide an independent check of the skew in the ACS astrometric catalog of Omega Cen stars, using exposures taken in a 45-deg range of telescope roll. The roll sequence will also provide a test for orbital variation of skew and field angle dependent PSF variations. The astrometric catalog of Omega Cen, improved for a skew, will be used to derive the geometric distorion to all UVIS filters, which has preliminarily been determined from F606W images and an astrometric catalog of 47 Tuc.

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....

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....

Dimensões do associativismo voluntário no cenário das relações entre saúde, pobreza e doença The dimensions of volunteer associativism in the scenario of the relationships amongst health, poverty and disease

Directory of Open Access Journals (Sweden)

Martha Cristina Nunes Moreira

2010-05-01

Full Text Available O presente artigo trabalha com a temática do associativismo voluntário tomando por base o aporte teórico da teoria da dádiva (1960. Em sua base empírica, estão os dados primários advindos de uma pesquisa realizada com dirigentes e/ou fundadores de catorze associações voluntárias brasileiras identificadas por uma filosofia de ação comum. A discussão analisa a ação dessas associações e outras ações voluntárias também surgidas no cenário brasileiro da década de noventa do século XX. Destacamos como conclusão o fato de que às iniciativas voluntárias é preciso ancorar a perspectiva de um circuito de trocas, de proximidade e reciprocidade, às custas de recairmos em ações de benemerência, que reativam a filantropia e a dependência.The present article discusses the theme of volunteer associativism based on the theoretical foundation of the theory of donation (1960. In his empirical base are the primary data of a research carried out with leaders and/or founders of 14 Brazilian voluntary associations identified by a common action philosophy. The discussion analyzes the accomplishments of those associations and other voluntary actions also arisen in the 90s in Brazil. The necessity of anchoring to volunteer initiatives the perspective of circuit of exchange, proximity and reciprocity is highlighted in order to avoid relapses to merit actions which reactivate philanthropy and dependence is highlighted as a central conclusion.

MTR fuel plate qualification capabilities at SCK-CEN

International Nuclear Information System (INIS)

Koonen, E.; Jacquet, P.

2002-01-01

In order to enhance the capabilities of BR2 in the field of MTR fuel plate testing, a dedicated irradiation device has been designed. In its basic version this device allows the irradiation of 3 fuel plates. The central fuel plate may be replaced by a dummy plate or a plate carrying dosimeters. A first FUTURE device has been built. A benchmark irradiation has been executed with standard BR2 fuel plates in order to qualify this device. Detailed neutronic calculations were performed and the results compared to the results of the post-irradiation examinations of the plates. These comparisons demonstrate the capability to conduct a fuel plate irradiation program under requested and well-known irradiation conditions. Further improvements are presently being designed in order to extend the ranges of heat flux and surface temperature of the fuel plates that can be handled with the FUTURE device. (author)

CEN MetaLex: Facilitating Interchange in e-Government

NARCIS (Netherlands)

Boer, A.; Winkels, R.

2011-01-01

MetaLex is a generic and extensible interchange framework for the XML encoding of the structure of, and metadata about, documents that function as a source of law. It aims to be jurisdiction and language-neutral, and is based on modern XML publishing concepts like a strict separation between text,

Monitoring Nuclear Facilities Using Satellite Imagery and Associated Remote Sensing Techniques

International Nuclear Information System (INIS)

Lafitte, Marc; Robin, Jean‑Philippe

2015-01-01

The mission of the European Union Satellite Centre (SatCen) is “to support the decision making and actions of the European Union in the field of the CFSP and in particular the CSDP, including European Union crisis management missions and operations, by providing, at the request of the Council or the European Union High Representative, products and services resulting from the exploitation of relevant space assets and collateral data, including satellite and aerial imagery, and related services”. The SatCen Non‑Proliferation Team, part of the SatCen Operations Division, is responsible for the analysis of installations that are involved, or could be involved, in the preparation or acquisition of capabilities intended to divert the production of nuclear material for military purposes and, in particular, regarding the spread of Weapons of Mass destruction and their means of delivery. For the last four decades, satellite imagery and associated remote sensing and geospatial techniques have increasingly expanded their capabilities. The unprecedented Very High Resolution (VHR) data currently available, the improved spectral capabilities, the increasing number of sensors and ever increasing computing capacity, has opened up a wide range of new perspectives for remote sensing applications. Concurrently, the availability of open source information (OSINF), has increased exponentially through the medium of the internet. This range of new capabilities for sensors and associated remote sensing techniques have strengthened the SatCen analysis capabilities for the monitoring of suspected proliferation installations for the detection of undeclared nuclear facilities, processes and activities. The combination of these remote sensing techniques, imagery analysis, open source investigation and their integration into Geographic Information Systems (GIS), undoubtedly improve the efficiency and comprehensive analysis capability provided by the SatCen to the EU stake‑holders. The

TeV gamma-UHECR anisotropy by decaying nuclei in flight: First neutrino traces?

Directory of Open Access Journals (Sweden)

Fargion Daniele

2013-06-01

Full Text Available Ultra High Cosmic Rays made by He-like lightest nuclei might solve the AUGER extragalactic clustering along Cen A. Moreover He like UHECR nuclei cannot arrive from Virgo because the light nuclei fragility and opacity above a few Mpc, explaining the Virgo UHECR absence. UHECR signals are spreading along Cen A as observed because horizontal galactic arms magnetic fields, bending them on vertical angles. Cen A events by He-like nuclei are deflected as much as the observed clustered ones; proton will be more collimated while heavy (iron nuclei are too much dispersed. Such a light nuclei UHECR component coexist with the other Auger heavy nuclei and with the Hires nucleon composition. We foresaw (2009 that UHECR He from Cen-A AGN being fragile should partially fragment into secondaries at tens EeV multiplet (D,He3,p nearly as the recent twin multiplet discovered ones (AUGER-ICRC-2011, at 20 EeV along Cen A UHECR clustering. Their narrow crowding occur by a posteriori very low probability, below 3 ⋅ 10−5. Remaining UHECR spread group may hint for correlations with other gamma (MeV − Al26 radioactive maps, mainly due to galactic SNR sources as Vela pulsar, the brightest, nearest GeV source. Other nearest galactic gamma sources show links with UHECR via TeV correlated maps. We suggest that UHECR are also heavy radioactive galactic nuclei as Ni56, Ni57 and Co57,Co60 widely bent (tens degree up to ≥ 100o by galactic fields. UHECR radioactivity (in β and γ channels and decay in flight at hundreds keV is boosted (by huge Lorentz factor ΓNi ≃ 109 − 108 leading to PeVs electrons and consequent synchrotron TeVs gamma offering UHECR-TeV correlated sky anisotropy. Moreover also rarest and non-atmospheric τ, and e neutrinos secondaries at PeVs, as the first two rarest shower just discovered in ICECUBE, maybe the first signature of such expected radioactive secondary tail.

SiGARA iCEN SEDANTERLERLE SiGARA iCEN ve DUZENLi EGZERSiZ ALIsKANLIGI OLAN OLGULARIN YAsAM KALiTELERi

Directory of Open Access Journals (Sweden)

FUNDA DEMiRTURK

2016-03-01

Results: Groups were similar by means of demographic features and cigarette consumption, onset of smoking age and total time of smoking (year (p>0.05. In addition, none of the SF-36 parameters differed between the groups (p>0.05. Discussion: Symptoms due to a long time cigarette consumption are determined to appear generally around the age 40. Depending on this issue, the similarity in the perception of quality of life between the groups leads us to think that a cumulative negative effect of cigarette on quality of life has not been established yet when the mean age, duration of cigarette consumption (year and the amount of consumption (package/year of the cases are taken into account. [J Contemp Med 2016; 6(1.000: 16-24

Laboratory and field tests for radionuclide migration and high flow paths in clay

International Nuclear Information System (INIS)

Bourke, P.J.; Jefferies, N.L.; Lineham, T.R.; Nesirky, P.

1991-01-01

Two investigations have been undertaken in this programme. The principal investigation was at Culham Laboratory, England, where water flow within the Kimmeridge clay was measured. A subsidiary investigation at SCK/CEN was undertaken at the Underground Research Laboratory SCK/CEN Mol, Belgium, where an in situ measurement of solute transport by diffusion was attempted. The in situ migration experiment at the Underground Research Laboratory at SCK/CEN Mol, Belgium, was unsuccessful, due to problems with the engineering installation. These difficulties caused significant disturbance to the Boom clay which was to be tested. Nevertheless the laboratory test proved the feasibility of the experiment. The field measurements at Culham Laboratory, Oxfordshire, were completed with the flow testing of a very silty clay horizon in the Kimmeridge clay. This layer was proved to be laterally continuous after drilling three exploratory boreholes. The hydraulic conductivity of the layer was ≥ 10 -8 ms -1 and comparative tests in the clay showed the conductivity of the clay to be at least 50 times less. 12 figs

The need to qualify Non Destructive Tests (NDT) has been recognized for many years in the European countries engaged in nuclear power generation

International Nuclear Information System (INIS)

Walczak, M.; Wojas, M.

2008-01-01

The European Network for Inspection Qualification, ENIQ, which groups the major part of the nuclear power plant operators in the European Union and in the Applicant Countries, has developed the European methodology for Qualification of Non Destructive Tests. As qualification of NDT is nowadays a standard method in the nuclear industry and in other industries. CEN (European Committee for Standardization) Technical Committee 138 '' Non Destructive Testing '' has established a Working Group, which is responsible for developing a Standard document detailing the CEN Methodology for the qualification of Non Destructive Tests applicable to all industries carrying out Non-Destructive Tests. This Standard document sets out basic principles and provides recommendations and general guidelines for carrying out qualification of NDT. It describes a methodology for qualification of Non-Destructive Tests, applicable to all NDT methods and considers qualification of equipment, procedure and personnel training. This paper presents a short background of the European Methodology for Qualification of Non-Destructive Tests and the Standard document CEN/TR 14748 '' Non-destructive testing - Methodology for qualification of non-destructive tests ''. (author)

Meu pedacinho de chão: considerações sobre imaginário social na chamada de abertura da novela da Rede Globo = Meu pedacinho de chão: thoughts of the social imaginary on the opening spot of Globo’s soap opera

Directory of Open Access Journals (Sweden)

Bittencourt, Daniela Gabriel

2016-01-01

Full Text Available Casas de lata, flores de plástico, cascas de árvore feitas de crochê, animais mecanicamente animados. . . O cenário colorido e repleto de fantasia da segunda versão da novela “Meu Pedacinho de Chão” (Rede Globo, 2014 é um convite à reflexão sobre o imaginário. Trata-se de uma produção da teledramaturgia brasileira que aposta em uma linguagem diferente, sobretudo no aspecto visual. Ao privilegiar um cenário que se identifica com o universo da imaginação infantil, oferece margem para se pensar numa representação que não encontra correspondência direta com o suposto mundo real. Neste trabalho, apresenta-se a análise da chamada da novela e os aspectos da narrativa que seduzem o telespectador. A tecnologia apresenta-se como ferramenta de atualização da narrativa, criando um cenário atemporal, fantasioso e sedutor, já presente no imaginário

Haunted by ghosts: prevalence, predictors and outcomes of spirit possession experiences among former child soldiers and war-affected civilians in Northern Uganda.

Science.gov (United States)

Neuner, Frank; Pfeiffer, Anett; Schauer-Kaiser, Elisabeth; Odenwald, Michael; Elbert, Thomas; Ertl, Verena

2012-08-01

Phenomena of spirit possession have been documented in many cultures. Some authors have argued that spirit possession is a type of psychopathology, and should be included as a category in diagnostic manuals of mental disorders. However, there are hardly any quantitative studies that report the prevalence of spirit possession on a population level and that provide evidence for its validity as a psychopathological entity. In an epidemiological study that was carried out in 2007 and 2008 with N = 1113 youths and young adults aged between 12 and 25 years in war-affected regions of Northern Uganda we examined the prevalence, predictors and outcomes of cen, a local variant of spirit possession. Randomly selected participants were interviewed using a scale of cen, measures of psychopathology (PTSD and depression) as well as indicators of functional outcome on different levels, including suicide risk, daily activities, perceived discrimination, physical complaints and aggression. We found that cen was more common among former child soldiers then among subjects without a history of abduction. Cen was related to extreme levels of traumatic events and uniquely predicted functional outcome even when the effects of PTSD and depression were controlled for. Our findings show that a long-lasting war that is accompanied by the proliferation of spiritual and magical beliefs and propaganda can lead to high levels of harmful spirit possession. In addition, we provide evidence for the incremental validity of spirit possession as a trauma-related psychological disorder in this context. Copyright © 2012 Elsevier Ltd. All rights reserved.

CloudSat Education Network: Partnerships for Outreach

Science.gov (United States)

TeBockhorst, D.

2014-12-01

CloudSat Education Network (CEN): Partnerships to improve the understanding of clouds in formal and informal settings. Since The CloudSat satellite launched in 2006 the Formal and Informal education programs for the mission have been focused on bringing an understanding about the mission science and the importance of clouds, climate & weather science. This has been done by creating and strengthening partnership and collaboration within scientific and educational communities around the country and the world. Because CloudSat was formally recognized as a Earth System Science Pathfinder campaign with the GLOBE program, the CEN developed a set of field protocols for student observations that augmented the GLOBE atmosphere protocols when there was a satellite overpass. This shared process between GLOBE & CloudSat resulted in the training & creation of CEN schools that are both GLOBE schools and CloudSat schools, and also produced three GLOBE partnerships that specialize in cloud science education and outreach. In addition, the CEN has developed productive relationships with other NASA missions and EPO teams. Specifically, in collaboration with the NASA CERES mission projects S'Cool and MyNASAData, we have co-presented at NSTA conferences and with schools participating in a NASA EPOESS-funded formal education project. This collaborative work has been a very real benefit to a wide variety of audiences needing to strengthen their understanding of clouds and their roles in the earth system, and we hope will serve as a model to future missions looking to involve the public in mission science.

Sr{sup 90} determination in calcareous water; Determination du {sup 90}Sr dans des eaux chargees en calcium

Energy Technology Data Exchange (ETDEWEB)

Cohen, P; Pardo, G; Wormser, G [Commissariat a l' Energie Atomique, Saclay (France). Centre d' Etudes Nucleaires

1958-07-01

The Straub method (ref. 2) for determination of radioactive strontium in water containing calcium is valid within very wide limits, and particularly in the case of residual water from the chemical purification treatment of the radioactive liquid effluent at the C.E.N. Saclay. (author) [French] La methode de Straub (ref. 2) de determination du strontium radioactif dans une eau chargee en calcium est valable dans des limites tres larges et en particulier dans le cas d'eaux residuaires provenant du traitement d'epuration chimique des effluents liquides radioactifs du C.E.N. de Saclay. (auteur)

ANÁLISE DOS IMPACTOS NA MATRIZ ENERGÉTICA DO ESTADO DE MINAS GERAIS EM CONSEQUÊNCIA DE ALTERAÇÕES NO POTENCIAL HIDROLÓGICO

OpenAIRE

Melo, Leonardo B.; Fortini, Ângela; Costa, Antonella L.; Pinheiro, Ricardo B.; Filho, Wilson P. B.; Ferreira, Wemerson R.

2015-01-01

A produção de energia no Brasil é fortemente dependente dos recursos hídricos. Com o crescimento populacional e o crescimento da economia, a pressão sobre a confiabilidade de fornecimento dos sistemas de geração hidrelétrica poderá enfrentar um contingenciamento sem precedentes, em cenários de escassez destes recursos. Este artigo apresenta a importância de investigação do nexo água-energia-emissões em cenários baseados na depleção, cada vez mais severa, dos recursos hídricos. A investigação ...

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)

Volckaert, G.

2000-01-01

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)

Um paradoxo da globalizacao: a competitividade e o fim do emprego

OpenAIRE

Marcolino, Luciano Nakad

2010-01-01

Apresenta a discussão sobre um paradoxo da globalização: a Competitividade e o Fim do Emprego, com teorias, e cases de empresas que atuam num, cenário de competição global. Aborda o impacto da Tecnologia microeletrônica nas empresas e no emprego. Questiona a validade da Reengenharia e apresenta uma visão estratégica para o futuro. O cenário é caracterizado pela informática e as telecomunicações que encolheram o mundo com economias de livre mercado. Aborda a transformação rápida da natureza...

The Census of Marine Life on Seamounts: results from a global science program

Science.gov (United States)

Stocks, K.; Clark, M.; Rowden, A.; Consalvey, M.

2010-12-01

CenSeam (a Global Census of Marine Life on Seamounts) is a network of more than 500 scientists, policy makers and conservationists around the world. These participants are collaborating to increase our understanding of the factors driving seamount community composition and diversity, such that we can better understand and manage the effects of human activities. The major scientific outcomes of the CenSeam community include the findings that 1) Seamount community composition is often similar to surrounding habitats; however, community structure can be different. 2) Contrary to conventional wisdom, few seamounts follow island biogeography predictions. 3) Seamounts can support a higher benthic biomass than surrounding habitats. 4) Seamounts can support species and communities new to science, and represent range extensions for known species, which are being described from CenSeam voyages. 5) For the first time, the extent of the vulnerability and risk to seamount benthic communities from fishing has been quantified. 6) Whilst long assumed, CenSeam researchers have demonstrated that seamount communities are disturbed by fishing and are slow to recover. And 7) Seamounts might act as repositories of biodiversity during future periods of extreme environmental change, as they have likely done in the past. The major products of Censeam include 1) a book synthesizing seamount knowledge: Seamounts: Ecology, Fisheries and Conservation (from Blackwell Publishing); 2) a recent review of the structure and function of seamount benthic communities, human impacts, and seamount management and conservation (Ann Rev Mar Sci); 3) hundreds of scientific publications, including Special Issues in Marine Ecology and Oceanography (in collaboration with the Seamount Biogeogsciences Network), and a Special Collection in PLoSONE; 4) guidance documents and formal advising for seamount management communities, including the United Nations Environment Program, International Seabed Authority

Obsolescência acelerada de produtos tecnológicos e os impactos na sustentabilidade da produção.

Directory of Open Access Journals (Sweden)

Antonio Carlos Zambon

2015-08-01

Full Text Available O objetivo deste artigo é apresentar um estudo crítico sobre a geração de resíduos associados ao consumo de produtos cujo ciclo de vida reduzido provoca substituição e descarte em alta frequência. Sua base teórica é a abordagem sistêmica, conforme proposto pela teoria de system dynamics, apoiada pela modelagem conceitual modelo orientado à representação do pensamento humano (Morph. A metodologia empregada se baseia na abordagem schumpeteriana. Com o apoio do Morph, foi organizado um modelo conceitual composto das principais variáveis pertinentes ao cenário de produção industrial, em um ambiente de inovação e obsolescência acelerada de bens. Para que se pudesse analisar a dinâmica dessas variáveis, esse cenário foi simulado por meio de um software apoiado na metodologia de system dynamics, que recriou a dinâmica do mercado para produção e substituição de bens. Emprega-se, neste trabalho, o método indutivo para composição do modelo conceitual, o qual é organizado com base em uma abordagem econômica clássica, que permitiu o teste de algumas premissas por experimentação, a partir de simulação. Dentro desse escopo, buscam-se um estudo empírico sobre o cenário de inovação e uma análise de sua dinâmica, visando à avaliação de cenários futuros. O modelo simulado permitiu a construção de três cenários em que foi possível observar que a ausência de preocupação com a recondução de produtos para a reciclagem influencia negativamente os fatores de produção, exaurindo-os. Também foi possível demonstrar que a recondução de produtos para a reciclagem atua positivamente na manutenção dos fatores de produção, sem prejudicar o nível de inovação alcançado, produzindo um equilíbrio no sistema. As considerações presentes neste estudo têm como implicação prática a oferta de uma nova maneira de interpretar a criação de valor pela introdução da inovação, considerando o paradoxo da

Religious and spiritual importance moderate relation between default mode network connectivity and familial risk for depression.

Science.gov (United States)

Svob, Connie; Wang, Zhishun; Weissman, Myrna M; Wickramaratne, Priya; Posner, Jonathan

2016-11-10

Individuals at high risk for depression have increased default mode network (DMN) connectivity, as well as reduced inverse connectivity between the DMN and the central executive network (CEN) [8]. Other studies have indicated that the belief in the importance of religion/spirituality (R/S) is protective against depression in high risk individuals [5]. Given these findings, we hypothesized that R/S importance would moderate DMN connectivity, potentially reducing DMN connectivity or increasing DMN-CEN inverse connectivity in individuals at high risk for depression. Using resting-state functional connectivity MRI (rs-fcMRI) in a sample of 104 individuals (aged 11-60) at high and low risk for familial depression, we previously reported increased DMN connectivity and reduced DMN-CEN inverse connectivity in high risk individuals. Here, we found that this effect was moderated by self-report measures of R/S importance. Greater R/S importance in the high risk group was associated with decreased DMN connectivity. These results may represent a protective neural adaptation in the DMN of individuals at high risk for depression, and may have implications for other meditation-based therapies for depression. Published by Elsevier Ireland Ltd.

Benchmarking two commonly used Saccharomyces cerevisiae strains for heterologous vanillin-β-glucoside production

Directory of Open Access Journals (Sweden)

Tomas Strucko

2015-12-01

Full Text Available The yeast Saccharomyces cerevisiae is a widely used eukaryotic model organism and a key cell factory for production of biofuels and wide range of chemicals. From the broad palette of available yeast strains, the most popular are those derived from laboratory strain S288c and the industrially relevant CEN.PK strain series. Importantly, in recent years these two strains have been subjected to comparative “-omics” analyzes pointing out significant genotypic and phenotypic differences. It is therefore possible that the two strains differ significantly with respect to their potential as cell 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. Keywords: Yeast, Cell factory, Strain choice, Heterologous production, Vanillin-glucoside, Shikimate pathway

Avaliação energética de um sistema integrado de abastecimento de água

Directory of Open Access Journals (Sweden)

Ana Luiza Rezende Guanais

2017-07-01

Full Text Available RESUMO Os encargos energéticos decorrentes do Sistema Integrado de Abastecimento de Água de Feira de Santana (SIAA-FSA foram analisados utilizando o método de avaliação do ciclo de vida. Foram identificadas, na cadeia de abastecimento de água, as etapas do sistema com maiores encargos energéticos, e propostos cenários de melhoria. Cadeias de produção dos insumos químicos, transporte dos insumos, energia elétrica e substituição dos tubos na rede para a manutenção do SIAA-FSA foram consideradas. A demanda energética acumulada do SIAA-FSA foi de 3,51 kWh.m-3 de água consumida. As etapas de captação e distribuição de água apresentaram os maiores consumos energéticos, e a eletricidade do bombeamento representou 86% da demanda energética acumulada. Os cenários propostos para o SIAA-FSA apresentaram melhorias significativas em relação ao cenário atual, com usos mais racionais de insumos químicos, eletricidade e água.

Measurements of secondary emissions from plasma arc and laser cutting in standard experiments

International Nuclear Information System (INIS)

Pilot, G.; Noel, J.P.; Leautier, R.; Steiner, H.; Tarroni, G.; Waldie, B.

1992-01-01

As part of an inter-facility comparison of secondary emissions from plasma arc and laser-cutting techniques, standard cutting tests have been done by plasma arc underwater and in air, and by laser beam in air. The same team was commissioned to measure the secondary emissions (solid and gaseous) in each contractor's facility with the same measuring rig. 20 mm and 40 mm thick, grade 304 stainless-steel plates were cut by plasma-torch in three different facilities: Heriot Watt University of Edinburgh, Institut fuer Werkstoffkunde of Universitaet Hannover and CEA/CEN Cadarache. 10 mm and in some cases 20 mm thick, grade 304, stainless-steel plates were cut by laser beam in five different facilities: CEA-CEN Fontenay, CEA-CEN Saclay, Institut fuer Werkstoffkunde of Universitaet Hannover and ENEA/Frascati. The results obtained in the standard experiments are rather similar, and the differences that appear can be explained by the various scales of the involved facilities (semi-industrial and laboratory) and by some particularities in the cutting parameters (an additional secondary gas flow of oxygen in plasma cutting at Universitaet Hannover, for example)

Measurements of secondary emissions from plasma arc and laser cutting in standard experiments

International Nuclear Information System (INIS)

Pilot, G.; Noel, M.; Leautier, R.; Steiner, H.; Tarroni, G.; Waldie, B.

1990-01-01

As part of an inter-facility comparison of secondary emissions from plasma-arc and laser cutting techniques, standard cutting tests have been done by plasma arc underwater and in air and laser beam in air. The same team, CEA/DPT/SPIN, was commissioned to measure the secondary emissions (solid and gaseous) in each contractor's facility with the same measuring rig. 20 mm and 40 mm thick grade 304 stainless steel plates were cut by plasma-torch in three different facilities: Heriot Watt University of Edinburgh, Institute fuer Werkstoffkunde of Hannover and CEA/CEN Cadarache. 10 mm and sometimes 20 mm thick grade 304 stainless steel plates were cut by laser beam in four different facilities: CEA/CEN Fontenay, CEA/CEN Saclay, Institute fuer Werkstoffkunde of Hannover and ENEA/FRASCATI. The results obtained in the standard experiments are rather similar, the differences that appear can be explained by the various scales of the facilities (semi-industrial and laboratory scale) and by some particularity in the cutting parameters (additional secondary gas flow of oxygen in plasma cutting at Hannover for example). Some supplementary experiments show the importance of some cutting parameters. (author)

High temperature slagging incineration of hazardous waste

International Nuclear Information System (INIS)

Vanbrabant, R.; Van de Voorde, N.

1987-01-01

The SCK/CEN, as the treatment center for the low level radioactive waste in Belgium, develops appropriate treatment systems for different kinds of wastes. The technical concept of the high temperature slagging incineration system has been developed and improved. The construction of the first demonstration plant was initiated in 1974. Since then the system has been operated regularly and further developed with the view to industrial operations. Now it handles about 5 tons of waste in a week. The waste which is treated consists of low level beta/gamma and alpha-contaminated radioactive waste. Because of the special characteristics the system is thought to be an excellent incineration system for industrial hazardous waste as well. Recently the SCK/CEN has received the authorization to treat industrial hazardous waste in the same installation. Preliminary tests have been executed on special waste products, such as PCB-contaminated liquids, with excellent incineration results. Incineration efficiency up to 99.9999% could be obtained. The paper presents the state of the art of this original The SCK/CEN-technology and gives the results of the tests done with special hazard

Brenda D. Phillips, Deborah S.K. Thomas, Alice Fothergill, Lynn Blinn‑Pike (orgs., Social Vulnerability to Disasters.

Directory of Open Access Journals (Sweden)

Susana Freiria

2012-10-01

Full Text Available Actualmente registam‑se em todo o mundo um número cada vez mais elevado de desastres e cujo impacto na vida das populações e nos seus bens é cada vez maior. Num cenário de catástrofe é importante conhecer os recursos humanos disponíveis, os cenários possíveis, os grupos mais vulneráveis em relação aos diversos perigos e quais as suas principais fragilidades. O livro Social Vulnerability to Disasters apresenta‑se como inovador na medida em que alia o conhecimento académico desenvolvido no âmb...

Mídias Sociais e Negócios: Um Estudo Delphi

OpenAIRE

Serra, Bernardo; Storopoli, José Eduardo; Pinto, Claudia Frias; Serra, Fernando Ribeiro

2013-01-01

Como Empresas, Paragrafo chegarem Ao Seu Público, recorrem a Atuais Ferramentas de Comunicação e Interação on-line, Como mídias Como Sociais. Neste Artigo pretendemos entendre se, e de que forma, Como Empresas adotarão e utilizarão Como mídias Sociais no Brasil em 2015. Para traçar este Cenário usamos o Método Delphi. Entrevistamos doze Especialistas e, NAS SUAS com base de de respostas por e Documentação em Secundária, elaborámos de o Cenário. Os Resultados mostram Uma Evolução Crescente, OU...

Pequenas Histórias Soltas: Mais do Que a Terra do Champanha

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Mariana Schwaab Machiavelli

2013-04-01

Full Text Available O município de Garibaldi está localizado na região turística Uva e Vinho, na Serra Gaúcha, a 110km da capital Porto Alegre. Dentro do cenário entorurístico do qual faz parte, busca diferenciar-se através da produção de espumantes, pioneira no país, quando em 1913 foi produzida a primeira garrafa na Vinícola Peterlongo. Por isso o município se autodenomina Terra do Champanha. Aproveitando esse diferencial, destaca-se no cenário regional pela realização bianual da Festa Nacional do Champanha – FENACHAMP.

Bragg crystal spectroscopy on the OSO 8 satellite

Science.gov (United States)

Long, K. S.; Chanan, G. A.; Helfand, D. J.; Ku, W. H.-M.; Novick, R.

1979-01-01

Results are reported for high-resolution OSO 8 Bragg-crystal spectroscopy of a variety of cosmic X-ray sources in the energy range from 2 to 10 keV. A continuous spectrum of Sco X-1 is examined, and results of a search for narrow line emission due to iron near 6.7 keV are presented for 32 galactic X-ray sources, including Sco X-1, Cyg X-3, and Cen X-3. It is noted that the strongest evidence for iron line emission has been obtained for Cyg X-3 and that evidence for an iron line feature has also been found in the spectrum of Cen X-3.

Desvendando a opinião da auditoria independente: o resultado da auditoria

OpenAIRE

Rudah Giasson Luccas

2015-01-01

A presente pesquisa objetiva analisar as teorias acerca do processo de auditoria e sua relação com a opinião expressa no relatório de auditoria. A associação estudada se diferencia de outros estudos no arcabouço teórico de auditoria, tanto no cenário nacional, quanto no cenário internacional, ao detectar a opinião esperada frente à qualidade da contabilidade da empresa e à qualidade vinculada à firma de auditoria, em métricas ex ante ao relatório da auditoria. O arcabouço teórico, base para e...

Integration of Social Sciences in Nuclear Research

Energy Technology Data Exchange (ETDEWEB)

Bovy, M.; Eggermont, G

2002-04-01

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.

Integration of Social Sciences in Nuclear Research

International Nuclear Information System (INIS)

Bovy, M.; Eggermont, G.

2002-01-01

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

Recent advances in the designing and the equipment of high activity laboratories

International Nuclear Information System (INIS)

Bazire, R.; Duhamel, F.

1960-01-01

The authors described the general principles governing the design of a laboratory for experimenting and handling radioactive substances. The difficulties encountered are of two types: 1) those due to the dangers of external irradiation; 2) those due to the dangers of internal contamination. As an example, the authors describe the French achievements in this field and in particular: - the high-activity laboratories at Saclay; - the laboratory for the examination of irradiated fuels at Saclay; - the 'hot' laboratory of the CEN-Grenoble; - the alpha, beta and gamma laboratories of the CEN-Fontenay-aux-Roses. Finally, the report describes the protective materials used for these installations. (author) [fr

RA Reactor operation and maintenance (I-IX), part V, Task 3.08/04-06, Refurbishment of the heavy water pumps

International Nuclear Information System (INIS)

Zecevic, V.; Nikolic, M.; Milic, J.

1963-12-01

In addition to detailed instructions for maintenance and repair of the heavy water pumps at the RA reactor this document includes nine annexes. They are as follows: cleaning the heavy water pump Avala with distilled water; instructions for repair of the pump CEN-132 (two annexes); list of operating characteristics of the pumps before repair; conclusions of the experts concerning the worn out bearings of the heavy water pump Avala, with the analysis of the stellite layer; report on the completed repair actions on the pumps Avala and CEN-132; report on the measurements done on the pump Avala; and the certificate concerning inspection of the pump

RA Reactor operation and maintenance (I-IX), part V, Task 3.08/04-06, Refurbishment of the heavy water pumps; Pogon i odrzavanje reaktora RA (I-IX), V Deo, Zadatak 3.08/04-06 Remont teskovodnih pumpi

Energy Technology Data Exchange (ETDEWEB)

Zecevic, V; Nikolic, M; Milic, J [Institute of Nuclear Sciences Boris Kidric, Reaktor RA, Vinca, Beograd (Serbia and Montenegro)

1963-12-15

In addition to detailed instructions for maintenance and repair of the heavy water pumps at the RA reactor this document includes nine annexes. They are as follows: cleaning the heavy water pump Avala with distilled water; instructions for repair of the pump CEN-132 (two annexes); list of operating characteristics of the pumps before repair; conclusions of the experts concerning the worn out bearings of the heavy water pump Avala, with the analysis of the stellite layer; report on the completed repair actions on the pumps Avala and CEN-132; report on the measurements done on the pump Avala; and the certificate concerning inspection of the pump.

Ana Carolina Escosteguy: Cenários dos estudos culturais

Directory of Open Access Journals (Sweden)

Thaisa Cristina Bueno

2015-12-01

Full Text Available Autora do livro “Cartografia dos Estudos Culturais”, “Comunicação e recepção” (em coautoria com Nilda Jacks, “Leituras em comunicação, cultura e tecnologia”, além de coautora e organizadora em outras obras de referência sobre o tema cultura e comunicação no Brasil, Ana Carolina Escosteguy é hoje um dos nomes mais importantes quando se pensa em Estudos Culturais no país. Doutora em Ciências da Comunicação pela Universidade de São Paulo (2000, com pós-doutorado no CAMRI (Communication and Media Research Institute, associado ao Department of Journalism and Mass Communication da School of Media, Art and Design da University of Westminster (UK, Ana Carolina Escosteguy é professora titular da Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS e bolsista produtividade em pesquisa do CNPq, desde março 2001. Nesta entrevista ela discute pontos sensíveis da área, entre eles o pouco destaque das pesquisas desse campo têm tido no Jornalismo, o fato de a base teórica ser bem mais ampla que os tradicionais estudos de recepção a que são comumente aproximados, não se nega a tratar das confusões com a folkcomunicação, bem como as próprios limites e intersecções desse campo de estudos. Durante esta conversa, aproveita para apontar as obras que considera essenciais para adentrar na área e mostra coragem e segurança para se colocar como uma pesquisadora que busca entender o tempo atual, as tecnologias e as rupturas a partir da perspectiva do usuário. Confiram:

the undifferentiated afromontane forest of denkoro in the cen

African Journals Online (AJOL)

ADMIN

from June to September (big rains), and a short season from March to April (small rains). The small rainy ... the diameter was measured separately for the branches. Data analysis. Releve's were grouped into clusters with the aid of the program TWINSPAN (Hill, 1979). The clusters were further refined in a synoptic table.

ISOL science is soaring. SCK-CEN promotes intensive cooperation

International Nuclear Information System (INIS)

2015-01-01

The unique properties of the particle accelerator that will be linked to the future MYRRHA reactor, make it possible to develop a new-generation ISOL facility (Isotope Separation On-Line) in parallel. ISOL at MYRRHA will use up to 5 per cent of the proton beam in MYRRHA for the production of radioactive ion beams which are 100 times more intense than what is possible in current European installations. Besides the technological development, it is also important to make scientists enthusiastic about using this in the future. The Belgian Nuclear Research Centre is the driving force behind the Belgian EURISOL Consortium, an organisation whose mission is to support ISOL science in Belgium. At the same time, it will give an impulse to the development of ISOL at MYRRHA.

Census 2000 Urbanized Areas (CEN00UA02_2)

Data.gov (United States)

California Natural Resource Agency — 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 (UC)....

A HARD X-RAY POWER-LAW SPECTRAL CUTOFF IN CENTAURUS X-4

Energy Technology Data Exchange (ETDEWEB)

Chakrabarty, Deepto; Nowak, Michael A. [MIT Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology, Cambridge, MA 02139 (United States); Tomsick, John A.; Boggs, Steven E.; Craig, William W. [Space Sciences Laboratory, University of California, Berkeley, CA 94720 (United States); Grefenstette, Brian W.; Fürst, Felix; Harrison, Fiona A.; Rana, Vikram [Cahill Center for Astronomy and Astrophysics, California Institute of Technology, Pasadena, CA 91125 (United States); Psaltis, Dimitrios [Department of Astronomy, University of Arizona, Tucson, AZ 85721 (United States); Bachetti, Matteo; Barret, Didier [Observatoire Midi-Pyrénées, Université de Toulouse III - Paul Sabatier, F-31400 Toulouse (France); Christensen, Finn E. [Division of Astrophysics, National Space Institute, Technical University of Denmark, DK-2800 Lyngby (Denmark); Hailey, Charles J. [Columbia Astrophysics Laboratory, Columbia University, New York, NY 10027 (United States); Kaspi, Victoria M. [Department of Physics, McGill University, Montreal, PQ H3A 2T8 (Canada); Miller, Jon M. [Department of Astronomy, University of Michigan, Ann Arbor, MI 48109 (United States); Stern, Daniel [Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109 (United States); Wik, Daniel R.; Zhang, William W. [Astrophysics Science Division, NASA Goddard Space Flight Center, Greenbelt, MD 20771 (United States); Wilms, Jörn, E-mail: deepto@mit.edu [Dr. Karl-Remeis-Sternwarte and Erlangen Centre for Astroparticle Physics, Universität Erlangen-Nürnberg, D-96049 Bamberg (Germany)

2014-12-20

The low-mass X-ray binary (LMXB) Cen X-4 is the brightest and closest (<1.2 kpc) quiescent neutron star transient. Previous 0.5-10 keV X-ray observations of Cen X-4 in quiescence identified two spectral components: soft thermal emission from the neutron star atmosphere and a hard power-law tail of unknown origin. We report here on a simultaneous observation of Cen X-4 with NuSTAR (3-79 keV) and XMM-Newton (0.3-10 keV) in 2013 January, providing the first sensitive hard X-ray spectrum of a quiescent neutron star transient. The 0.3-79 keV luminosity was 1.1×10{sup 33} D{sub kpc}{sup 2} erg s{sup –1}, with ≅60% in the thermal component. We clearly detect a cutoff of the hard spectral tail above 10 keV, the first time such a feature has been detected in this source class. We show that thermal Comptonization and synchrotron shock origins for the hard X-ray emission are ruled out on physical grounds. However, the hard X-ray spectrum is well fit by a thermal bremsstrahlung model with kT{sub e} = 18 keV, which can be understood as arising either in a hot layer above the neutron star atmosphere or in a radiatively inefficient accretion flow. The power-law cutoff energy may be set by the degree of Compton cooling of the bremsstrahlung electrons by thermal seed photons from the neutron star surface. Lower thermal luminosities should lead to higher (possibly undetectable) cutoff energies. We compare Cen X-4's behavior with PSR J1023+0038, IGR J18245–2452, and XSS J12270–4859, which have shown transitions between LMXB and radio pulsar modes at a similar X-ray luminosity.

Chandra X-ray Time-Domain Study of Alpha Centauri AB, Procyon, and their Environs

Science.gov (United States)

Ayres, Thomas R.

2018-06-01

For more than a decade, Chandra X-ray Observatory has been monitoring the central AB binary (G2V+K1V) of the α Centauri triple system with semi-annual pointings, using the High-Resolution Camera. This study has been extended in recent years to the mid-F subgiant, Procyon. The main objective is to follow the coronal (T~1MK) activity variations of the three stars, analogous to the Sun's 11-year sunspot cycle. Tentative periods of 20 yr and 8 yr have been deduced for α Cen A and B, respectively; but so far Procyon has shown only a slow, very modest decline in count rate, which could well reflect a slight instrumental degradation rather than intrinsic behavior. The negligible high-energy variability of Procyon sits in stark contrast to the dramatic factor of several to ten changes in the X-ray luminosities of α Cen AB and the Sun over their respective cycles. Further, although sunlike α Cen A has been observed by successive generations of X-ray observatories for nearly four decades, albeit sporadically, there are key gaps in the coverage that affect the determination of the cycle period. In fact, the most recent pointings suggest a downturn in A's count rate that might be signaling a shorter, more solar-like cycle following a delayed minimum in the 2005--2010 time frame (perhaps an exaggerated version of the extended solar minimum between recent Cycles 23 and 24). Beyond the coronal cycles of the three stars, the sequence of periodic X-ray images represents a unique time-domain history concerning steady as well as variable sources in the two 30'x30' fields. The most conspicuous of the variable objects -- in the α Cen field -- will be described here.

Precisão experimental relacionada a tamanhos de parcelas, números de tratamentos e repetições em nabo forrageiro

Directory of Open Access Journals (Sweden)

Alberto Cargnelutti Filho

2014-06-01

Full Text Available O objetivo deste trabalho foi determinar a precisão experimental na avaliação da massa de matéria verde de nabo forrageiro, em cenários formados por combinações de tamanhos de parcela e número de tratamentos e de repetições. Utilizaram-se os dados de massa de matéria verde de 3.456 unidades experimentais básicas de 0,5×0,5 m (0,25 m2. Os cenários (1.728 foram planejados e formados pela combinação de seis tamanhos de parcela (0,25, 0,50, 1,00, 1,50, 2,00 e 2,25 m2, i tratamentos (i = 5, 6,..., 20 e r repetições (r = 3, 4,..., 20. Em cada cenário, foram realizadas 2.000 reamostragens, com reposição. Calculou-se a média das 2.000 estimativas, em cada cenário, quanto à diferença mínima significativa pelo teste de Tukey, ao índice de variação e ao coeficiente de variação experimental. Essas estatísticas, nesta ordem, são adequadas para avaliar a precisão experimental. Para avaliar a massa de matéria verde de nabo forrageiro, em experimentos em delineamento inteiramente casualizado, com 5 a 20 tratamentos e cinco repetições, parcelas com o tamanho de seis unidades experimentais básicas (1,50 m2 são suficientes para identificar diferenças significativas entre tratamentos - menores ou iguais a 36,88% da média geral do experimento -, pelo teste de Tukey, a 5% de probabilidade, em experimentos em delineamento inteiramente casualizado, com 5 a 20 tratamentos e cinco repetições.

Towards a new pressure vessel standard in the European Union

International Nuclear Information System (INIS)

Osweiller, F.

1995-01-01

Since 1990 the European Commission has been preparing a new Directive which will regulate the Pressure Equipment sector in the countries of the European Union. CEN Standards devoted to pressure vessels, piping, boilers, are currently being drawn up to complete and implement this Directive. This paper focuses on the European Unfired Pressure Vessel Standard (EPVS) which is in course of development under the responsibility of CEN/TC54. The main aspects of the Standard are outlined: general structure, materials, design, fabrication, inspection and testing. The link with the European Directive is explained in connection with regulatory aspects: conformity assessment, essential safety requirements, classes of vessels, notified bodies, EC mark, status of the standard

Using all of the Energy from the Sun to Make Power

Energy Technology Data Exchange (ETDEWEB)

Dapkus, P. Daniel; Povinelli, Michelle

2013-07-18

Representing the Center for Energy Nanoscience (CEN), this document is one of the entries in the Ten Hundred and One Word Challenge and was awarded "Overall Winner Runner-up." As part of the challenge, the 46 Energy Frontier Research Centers were invited to represent their science in images, cartoons, photos, words and original paintings, but any descriptions or words could only use the 1000 most commonly used words in the English language, with the addition of one word important to each of the EFRCs and the mission of DOE: energy. The mission of the CEN is to explore the light absorption and emission in organic and nanostructure materials and their hybrids for solar energy conversion and solid state lighting.

Sectorial Group for Incident Analyses (GSAI)

International Nuclear Information System (INIS)

Galles, Q.; Gamo, J. M.; Jorda, M.; Sanchez-Garrido, P.; Lopez, F.; Asensio, L.; Reig, J.

2013-01-01

In 2008, the UNESA Nuclear Energy Committee (CEN) proposed the creation of a working group formed by experts from all Spanish NPPs with the purpose of jointly analyze relevant incidents occurred in each one of the plants. This initiative was a response to a historical situation in which the exchange of information on incidents between the Spanish NPP's was below the desired level. In june 2009, UNESA's Guide CEN-29 established the performance criteria for the so called Sectorial Group for Incident Analyses (GSAI), whose activity would be coordinated by the UNESA's Group for Incident Analyses (GSAI), whose activity would be coordinated by the UNESA's Group of Operating Experience, under the Operations Commission (COP). (Author)

O design de produção nos filmes de Wes Anderson

OpenAIRE

Cunha, Humberto Thimoteo

2009-01-01

Esse projeto pesquisa a relação entre design e cinema, seguindo a linha do design de produção, o estudo da escolha de locações, a disposição de cenários, móveis e objetos. Posteriormente faz uma análise dos filmes do diretor Wes Anderson, buscando a importância dessa atividade no processo de produção dos filmes, analisando elementos de design de produção como objetos cenários e móveis, também elementos de figurino e elementos de pós-produção. A ánalise buscará mostrar que a importância do...

Documentation requirements for radiation sterilization

DEFF Research Database (Denmark)

Miller, A.

1995-01-01

Several standards are recently approved or are under development by the standard organizations ISO and CEN in the field of radiation sterilization. Particularly in Europe these standards define new requirements on some issues and on other issues they emphasize the necessary documentation for appr......Several standards are recently approved or are under development by the standard organizations ISO and CEN in the field of radiation sterilization. Particularly in Europe these standards define new requirements on some issues and on other issues they emphasize the necessary documentation...... for approval of radiation sterilized products. The impact of these standards on the radiation sterilization is discussed, with special attention given to a few special issues, mainly traceability and uncertainty of measurement results....

Engaging the underserved: a process model to mobilize rural community health coalitions as partners in translational research.

Science.gov (United States)

Davis, Melinda M; Aromaa, Susan; McGinnis, Paul B; Ramsey, Katrina; Rollins, Nancy; Smith, Jamie; Beamer, Beth Ann; Buckley, David I; Stange, Kurt C; Fagnan, Lyle J

2014-08-01

Community engagement (CE) and community-engaged research (CEnR) are increasingly recognized as critical elements in research translation. Process models to develop CEnR partnerships in rural and underserved communities are needed. Academic partners transformed four established Community Health Improvement Partnerships (CHIPs) into Community Health Improvement and Research Partnerships (CHIRPs). The intervention consisted of three elements: an academic-community kickoff/orientation meeting, delivery of eight research training modules to CHIRP members, and local community-based participatory research (CBPR) pilot studies addressing childhood obesity. We conducted a mixed methods analysis of pre-/postsurveys, interviews, session evaluations, observational field notes, and attendance logs to evaluate intervention effectiveness and acceptability. Forty-nine community members participated; most (78.7%) attended five or more research training sessions. Session quality and usefulness was high. Community members reported significant increases in their confidence for participating in all phases of research (e.g., formulating research questions, selecting research methods, writing manuscripts). All CHIRP groups successfully conducted CBPR pilot studies. The CHIRP process builds on existing infrastructure in academic and community settings to foster CEnR. Brief research training and pilot studies around community-identified health needs can enhance individual and organizational capacity to address health disparities in rural and underserved communities. © 2014 Wiley Periodicals, Inc.

INTERFERÊNCIA DO USO DA TERRA NAS INUNDAÇÕES DA ÁREA URBANA DO CÓRREGO DA SERVIDÃO, RIO CLARO (SP

Directory of Open Access Journals (Sweden)

Isabel Cristina Moraes

2012-10-01

Full Text Available As primeiras populações foram fixadas próximas aos rios e com o crescimento destas e acréscimo de áreas impermeabilizadas, houve a supressão das áreas de várzea, alteração da dinâmica dos cursos d’água e, por conseguinte, ocorrência de inundações. Assim, este trabalho tem como objetivo verificar a interferência do uso da terra nas inundações na área urbana da bacia hidrográfica do Córrego da Servidão, Rio Claro (SP, em diferentes cenários, ou seja, sem canalização deste córrego (1958, em cenário em que o córrego foi canalizado (1972 e no cenário atual (2006. Os resultados indicaram que o aumento da impermeabilização, pelo crescimento da cidade de Rio Claro, foi o responsável pelos primeiros eventos de inundação do município. O poder público vem realizando algumas obras de engenharia e transferindo grande parte dos problemas relacionados com as inundações para áreas a jusante, onde hoje as inundações ocorrem.

Influence of side-groove root radius on the ductile fracture toughness of miniature C(T) specimens

Energy Technology Data Exchange (ETDEWEB)

Lucon, E.; Scibetta, M.

2009-05-15

The use of miniature C(T) specimens, MC(T), for fracture toughness measurements in the upper shelf regime has been investigated at SCK-CEN since 2004, in the framework of the Electrabel/Tractebel SCK-CEN Convention (now General Framework Agreement SUEZ-SCK-CEN). This geometry has been used and validated on both unirradiated (2004-05) and irradiated (2006) materials, mainly reactor pressure vessel (RPV) steels. While side-grooved MC(T) specimens have shown in all conditions a systematically lower tearing resistance and ductile crack initiation toughness as compared to standard-size 1TC(T) samples, the only plain-sided MC(T) specimen tested in 2005 exhibited very high ductile fracture toughness, thus pointing at a strong influence of side-grooving on the upper shelf properties of MC(T) specimens. This study investigates the influence of side-grooving on the initiation toughness and tearing resistance of MC(T) specimens, as a function of the root radius of the side-groove (ranging from 0.1 to 1 mm) and in comparison with plain-sided MC(T) and reference 1TC(T) samples. The material used is the well characterized DIN 22NiMoCr37 RPV steel, which had been used in the European project which generated the famous EURO fracture toughness data set.

Effects of Cognitive Training on Resting-State Functional Connectivity of Default Mode, Salience, and Central Executive Networks.

Science.gov (United States)

Cao, Weifang; Cao, Xinyi; Hou, Changyue; Li, Ting; Cheng, Yan; Jiang, Lijuan; Luo, Cheng; Li, Chunbo; Yao, Dezhong

2016-01-01

Neuroimaging studies have documented that aging can disrupt certain higher cognitive systems such as the default mode network (DMN), the salience network and the central executive network (CEN). The effect of cognitive training on higher cognitive systems remains unclear. This study used a 1-year longitudinal design to explore the cognitive training effect on three higher cognitive networks in healthy older adults. The community-living healthy older adults were divided into two groups: the multi-domain cognitive training group (24 sessions of cognitive training over a 3-months period) and the wait-list control group. All subjects underwent cognitive measurements and resting-state functional magnetic resonance imaging scanning at baseline and at 1 year after the training ended. We examined training-related changes in functional connectivity (FC) within and between three networks. Compared with the baseline, we observed maintained or increased FC within all three networks after training. The scans after training also showed maintained anti-correlation of FC between the DMN and CEN compared to the baseline. These findings demonstrated that cognitive training maintained or improved the functional integration within networks and the coupling between the DMN and CEN in older adults. Our findings suggested that multi-domain cognitive training can mitigate the aging-related dysfunction of higher cognitive networks.

MOST OBSERVATIONS OF OUR NEAREST NEIGHBOR: FLARES ON PROXIMA CENTAURI

Energy Technology Data Exchange (ETDEWEB)

Davenport, James R. A. [Department of Physics and Astronomy, Western Washington University, 516 High Street, Bellingham, WA 98225 (United States); Kipping, David M. [Department of Astronomy, Columbia University, 550 West 120th Street, New York, NY 10027 (United States); Sasselov, Dimitar [Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138 (United States); Matthews, Jaymie M. [Department of Physics and Astronomy, University of British Columbia, 6224 Agricultural Road, Vancouver, BC V6T 1Z1 (Canada); Cameron, Chris [Department of Mathematics, Physics and Geology, Cape Breton University, 1250 Grand Lake Road, Sydney, NS B1P 6L2 (Canada)

2016-10-01

We present a study of white-light flares from the active M5.5 dwarf Proxima Centauri using the Canadian microsatellite Microvariability and Oscillations of STars . Using 37.6 days of monitoring data from 2014 to 2015, we have detected 66 individual flare events, the largest number of white-light flares observed to date on Proxima Cen. Flare energies in our sample range from 10{sup 29} to 10{sup 31.5} erg. The flare rate is lower than that of other classic flare stars of a similar spectral type, such as UV Ceti, which may indicate Proxima Cen had a higher flare rate in its youth. Proxima Cen does have an unusually high flare rate given its slow rotation period, however. Extending the observed power-law occurrence distribution down to 10{sup 28} erg, we show that flares with flux amplitudes of 0.5% occur 63 times per day, while superflares with energies of 10{sup 33} erg occur ∼8 times per year. Small flares may therefore pose a great difficulty in searches for transits from the recently announced 1.27 M {sub ⊕} Proxima b, while frequent large flares could have significant impact on the planetary atmosphere.

Very high-energy gamma-ray signature of ultrahigh-energy cosmic-ray acceleration in Centaurus A

Science.gov (United States)

Joshi, Jagdish C.; Miranda, Luis Salvador; Razzaque, Soebur; Yang, Lili

2018-04-01

The association of at least a dozen ultrahigh-energy cosmic-ray (UHECR) events with energy ≳ 55 EeV detected by the Pierre Auger Observatory (PAO) from the direction of Centaurus-A, the nearest radio galaxy, supports the scenario of UHECR acceleration in the jets of radio galaxies. In this work, we model radio to very high energy (VHE,≳ 100 GeV) γ-ray emission from Cen A, including GeV hardness detected by Fermi-LAT and TeV emission detected by HESS. We consider two scenarios: (i) Two zone synchrotron self-Compton (SSC) and external-Compton (EC) models, (ii) Two zone SSC, EC and photo-hadronic emission from cosmic ray interactions. The GeV hardness observed by Fermi-LAT can be explained using these two scenarios, where zone 2 EC emission is very important. Hadronic emission in scenario (ii) can explain VHE data with the same spectral slope as obtained through fitting UHECRs from Cen A. The peak luminosity in cosmic ray proton at 1 TeV, to explain the VHE γ-ray data is ≈2.5 × 1046 erg/s. The bolometric luminosity in cosmic ray protons is consistent with the luminosity required to explain the origin of 13 UHECR signal events that are correlated with Cen A.

SWI/SNF-like chromatin remodeling factor Fun30 supports point centromere function in S. cerevisiae.

Directory of Open Access Journals (Sweden)

Mickaël Durand-Dubief

2012-09-01

Full Text Available Budding yeast centromeres are sequence-defined point centromeres and are, unlike in many other organisms, not embedded in heterochromatin. Here we show that Fun30, a poorly understood SWI/SNF-like chromatin remodeling factor conserved in humans, promotes point centromere function through the formation of correct chromatin architecture at centromeres. Our determination of the genome-wide binding and nucleosome positioning properties of Fun30 shows that this enzyme is consistently enriched over centromeres and that a majority of CENs show Fun30-dependent changes in flanking nucleosome position and/or CEN core micrococcal nuclease accessibility. Fun30 deletion leads to defects in histone variant Htz1 occupancy genome-wide, including at and around most centromeres. FUN30 genetically interacts with CSE4, coding for the centromere-specific variant of histone H3, and counteracts the detrimental effect of transcription through centromeres on chromosome segregation and suppresses transcriptional noise over centromere CEN3. Previous work has shown a requirement for fission yeast and mammalian homologs of Fun30 in heterochromatin assembly. As centromeres in budding yeast are not embedded in heterochromatin, our findings indicate a direct role of Fun30 in centromere chromatin by promoting correct chromatin architecture.

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.

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.

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.

The Maritime Potential of ASEAN Economies

Directory of Open Access Journals (Sweden)

Hans-Dieter Evers

2011-01-01

Full Text Available Countries may utilize a long coastline in relation to their landmass as a resource to develop their maritime economy. This paper argues that ASEAN countries differ in utilizing their maritime potential. As a basis for further comparative studies the Center for Policy Research and International Studies (CenPRIS in Penang developed a set of indicators to measure the maritime potential of nations, the state of their maritime industries, and the degree to which the maritime potential has actually been utilized. Using the CenPRIS Ocean Index (COI shows that Brunei and the Philippines have underutilized their maritime potentials, whereas Singapore and Thailand have made full use of it. Malaysia still has the potential to further develop its maritime economy.

Underwater plasma arc cutting

International Nuclear Information System (INIS)

Leautier, R.; Pilot, G.

1991-01-01

This report describes the work done to develop underwater plasma arc cutting techniques, to characterise aerosols from cutting operations on radioactive and non-radioactive work-pieces, and to develop suitable ventilation and filtration techniques. The work has been carried out in the framework of a contract between CEA-CEN Cadarache and the Commission of European Communities. Furthermore, this work has been carried out in close cooperation with CEA-CEN Saclay mainly for secondary emissions and radioactive analysis. The contract started in May 1986 and was completed in December 1988 by a supplementary agreement. This report has been compiled from several progress reports submitted during the work period, contains the main findings of the work and encloses the results of comparative tests on plasma arc cutting

MYRRHA, A Flexible Fast Spectrum Irradiation Facility. Current Status of Design

International Nuclear Information System (INIS)

Baeten, Peter; Fernandez, Rafaël; De Bruyn, Didier; Van den Eynde, Gert; Leysen, Paul; Aït Abderrahim, Hamid; Castelliti, Diego

2011-01-01

R and D program in support of MYRRHA: • Several R&D required for MYRRHA components: - LBE corrosion; - O 2 control in LBE; - Irradiated material properties. • Experimental facilities foreseen in the near future in support of MYRRHA at SCK•CEN premacies: - E-SCAPE: Thermal-hydraulic pool facility with 1:6 scale ratio with MYRRHA; - Liliputter: Pump test loop; - COMPLOT: Isothermal hydraulic loop representing one fuel channel/IPS at full high; - PHX mock-up testing concept, fouling, flow-induced vibrations, (SGTR)…; • Experimental facilities foreseen in the near future in support of MYRRHA at SCK•CEN premacies (continued): - Safety/control rod; - Fuel bundle; - Target window; - Component test pool; - Fuel loader; - Robotic arm; • All experiments planned to be finished before 2016

The high-energy X-ray spectrum of Centaurus XR-3 observed from OSO 8

Science.gov (United States)

Dolan, J. F.; Crannell, C. J.; Dennis, B. R.; Frost, K. J.; Orwig, L. E.

1984-01-01

Observations of the X-ray binary Cen XR-3 in the 20-120 keV energy range by means of OSO 8's high energy X-ray spectrometer, during July 16-19, 1975, and July 5-14 and 28-29, 1978, indicate that the source was in a high luminosity state during 1975 and a low luminosity one in 1978. While mean orbital light curves appear similar in shape in both years, orbit-to-orbit intensity variations are noted. Spectral, luminosity, and the 4.84 sec modulation are characterized. Cen XR-3 may be a system in which mass transfer by Roche lobe overflow, and by accretion from a stellar wind, are both effective in the production of observable X-ray radiation.

Observations of celestial X-ray sources above 20 keV with the high-energy scintillation spectrometer on board OSO-8

International Nuclear Information System (INIS)

Crannell, C.J.; Dennis, B.R.; Dolan, J.F.; Frost, K.J.; Orwig, L.E.; Maurer, G.S.

1977-01-01

High-energy x-ray spectra of the Crab Nebula, Cyg XR-1, and Cen A have been determined from observations with the scintillation spectrometer on board the OSO-8 satellite, launched in June, 1975. Each of these sources was observed over two periods of 8 days or more, enabling a search for day-to-day and year-to-year variations in the spectral and temporal characteristics of the x-ray emission. No variation in the light curve of the Crab pulsar has been found from observations which span a 15-day period in March 1976, with demonstrable phase stability. Transitions associated with the binary phase of Cyg XR-1 and a large change in the emission from Cen A are reported

Mol - Research Division Report 1986 - 2

International Nuclear Information System (INIS)

Delbarre, J.

1987-03-01

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)

77 FR 41334 - Request for Comments: Customer Due Diligence Requirements for Financial Institutions; Public Hearing

Science.gov (United States)

2012-07-13

... domestic or foreign entity, (2) regulated or unregulated for anti-money laundering purposes, etc.), (ii... little to no independent economic value. See FinCEN Guidance, FIN-2006-G014, ``Potential Money Laundering...

Characterization of a Cellulomonas fimi exoglucanase/xylanase-endoglucanase gene fusion which improves microbial degradation of cellulosic biomass.

Science.gov (United States)

Duedu, Kwabena O; French, Christopher E

2016-11-01

Effective degradation of cellulose requires multiple classes of enzyme working together. However, naturally occurring cellulases with multiple catalytic domains seem to be rather rare in known cellulose-degrading organisms. A fusion protein made from Cellulomonas fimi exo- and endo- glucanases, Cex and CenA which improves breakdown of cellulose is described. A homologous carbohydrate binding module (CBM-2) present in both glucanases was fused to give a fusion protein CxnA. CxnA or unfused constructs (Cex+CenA, Cex, or CenA) were expressed in Escherichia coli and Citrobacter freundii. The latter recombinant strains were cultured at the expense of cellulose filter paper. The expressed CxnA had both exo- and endo- glucanase activities. It was also exported to the supernatant as were the non-fused proteins. In addition, the hybrid CBM from the fusion could bind to microcrystalline cellulose. Growth of C. freundii expressing CxnA was superior to that of cells expressing the unfused proteins. Physical degradation of filter paper was also faster with the cells expressing fusion protein than the other constructs. Our results show that fusion proteins with multiple catalytic domains can improve the efficiency of cellulose degradation. Such fusion proteins could potentially substitute cloning of multiple enzymes as well as improving product yields. Copyright © 2016 Elsevier Inc. All rights reserved.

New guidelines for oil spill identification of waterborne petroleum and petroleum products

Energy Technology Data Exchange (ETDEWEB)

Faksness, L.G.; Daling, P.S. [SINTEF Energy Research, Trondheim (Norway); Hansen, A.B. [National Environmental Research Inst., Roskilde (Denmark); Kienhuis, P. [RIZA, (Netherlands); Duus, R. [Norwegian Standard Association (Norway)

2005-07-01

Advances in interpretive and analytical methods have opened the possibility to improve the existing Nordtest methodology for oil spill identification which was developed in 1991 under the Nordic Council of Ministers. In 2002, the European Committee for Standardization (CEN) established 2 working groups to revise the Nordtest Methodology into the following 2 CEN guidelines: (1) oil spill identification which includes waterborne and petroleum products, and (2) oil spill identification which in addition to including waterborne petroleum and petroleum products, includes analytical methodology and interpretation of results. The revised methodology includes a protocol/decision chart that has 3 tiered levels of analyses and data treatment. The methodology relies on the characterization of diagnostic ratios. The CEN working group intends to use the guidelines as a basis for a national oil spill identification protocol in each European country and for further international use. The methodology can be applied to oil samples of petrogenic origin with boiling points above 200 degrees C, such as crude oils, diesel fuel oils, residual bunker oils, lubricants, and mixtures of oily bilge and sludge samples. It is not intended for automotive gasolines or other light petroleum products. The method has been implemented in most forensic laboratories in Europe and has successfully differentiated between oils from a spill and possible pollution sources. 19 refs., 4 tabs., 10 figs.

New guidelines for oil spill identification of waterborne petroleum and petroleum products

International Nuclear Information System (INIS)

Faksness, L.G.; Daling, P.S.; Hansen, A.B.; Kienhuis, P.; Duus, R.

2005-01-01

Advances in interpretive and analytical methods have opened the possibility to improve the existing Nordtest methodology for oil spill identification which was developed in 1991 under the Nordic Council of Ministers. In 2002, the European Committee for Standardization (CEN) established 2 working groups to revise the Nordtest Methodology into the following 2 CEN guidelines: (1) oil spill identification which includes waterborne and petroleum products, and (2) oil spill identification which in addition to including waterborne petroleum and petroleum products, includes analytical methodology and interpretation of results. The revised methodology includes a protocol/decision chart that has 3 tiered levels of analyses and data treatment. The methodology relies on the characterization of diagnostic ratios. The CEN working group intends to use the guidelines as a basis for a national oil spill identification protocol in each European country and for further international use. The methodology can be applied to oil samples of petrogenic origin with boiling points above 200 degrees C, such as crude oils, diesel fuel oils, residual bunker oils, lubricants, and mixtures of oily bilge and sludge samples. It is not intended for automotive gasolines or other light petroleum products. The method has been implemented in most forensic laboratories in Europe and has successfully differentiated between oils from a spill and possible pollution sources. 19 refs., 4 tabs., 10 figs

ORGANIZACIJA RADA RONILAČKOG CENTRA

Directory of Open Access Journals (Sweden)

Veselin Mijajlović

2007-05-01

Full Text Available Having in mind that the most actual and most perspective export product in Montenegro is touristic service and acti vities regarding sport and recreation as its gre at part; the aim of this work is to in du ce for ming of di ving cen ters on the Mon te ne gro co asts, so that they co uld va lo ri ze spor ti ve, cul tu ral and eco lo gi cal po ten ti als in the pla ce where they work. This work also shows that through ef fective bussiness the consumer appro ach strategy sho uld be de ve lo ped, with aim to pro vi de con fi den ce of the con su mer in the in du stry of spor ti ve/rec re a ti o nal di ving. Goal of this work is to in form fu tu re di ving cen ter fo un ders with the ba sis of the bus si ness in spor ti ve to u rism ge ne rally; to pre pa re them for the job of in struc tor and for the work in cen ter; and to ma ke them mo re fa mi li ar with the va lu es of edu ca ti o nal system and to show them how to use it.

76 FR 20407 - Self-Regulatory Organizations; The NASDAQ Stock Market LLC; Notice of Filing and Immediate...

Science.gov (United States)

2011-04-12

... eliminated the independent testing exception, because the Financial Crimes Enforcement Network (``FinCEN... provisions of 5 U.S.C. 552, will be available for Web site viewing and printing in the Commission's Public...

Technical principles underlying limit values for release of substances for the percolation test TS3: comparison DE and NL

Energy Technology Data Exchange (ETDEWEB)

Van Zomeren, A.; Dijkstra, J.J. [ECN Environment and Energy Engineering, Petten (Netherlands); Susset, B. [Consulting Office SiWaP (Germany)

2013-10-15

Within CEN TC 351 WG 1, standardized, horizontal test methods are developed to assess the release (leaching) of dangerous substances from construction as defined in ER3 of the CPD. For granular materials TS 3, a horizontal up-flow percolation test, was further developed by CEN TC 351 WG1 and will enter the validation phase in 2013. In CEN TC 351 WG1, there are still discussions regarding the sample preparation and some test conditions. Currently, two options for sample preparation and test conditions are specified. Controversy between DE and NL regarding sample preparation and test conditions and the need for two separate options in the TS 3 percolation test are possibly for a part caused by different approaches for risk assessment in the Netherlands and in Germany and the resulting regulatory concepts. One important reason for this is, that in soil and groundwater regulations the test method and the impact assessment method are systematically linked together but the impact assessment methods and lab methods in both countries are different. The discussions in CEN TC 351 WG 1 show that there is a need to have a better mutual understanding of the relation between test method and impact assessment on the one hand and a clear overview of differences in impact assessment approaches of each country on the other hand. The aim of this project is to explain and compare the assumptions, boundary conditions and conventions of the impact assessment approach that are implemented in the upcoming German Recycling Degree and in the Soil Quality Degree of the Netherlands. Ultimately, a better understanding of the impact assessment approaches provides a basis for further discussion in WG1 to agree on only one option for the percolation test conditions. The following report is prepared by the contractors of Germany and Netherlands together to compare the two country-specific concepts. This report summarizes and explains the presentation given on the 25th of April at TC 351 WG1 in

Contrasting rainfall declines in northern and southern Tanzania: Potential differential impacts of west Pacific warming and east Pacific cooling

Science.gov (United States)

Harrison, L.; Funk, C. C.; Verdin, J. P.; Pedreros, D. H.; Shukla, S.; Husak, G. J.

2015-12-01

Here, we present analysis of a new 1900-2014 rainfall record for the Greater Horn of Africa with high station density (CenTrends), and evaluate potential climate change "hot spots" in Tanzania. We identify recent (1981-2014) downward trends in Tanzanian rainfall, use CenTrends to place these in a longer historical context, and relate rainfall in these regions to decadal changes in global sea surface temperatures (SSTs). To identify areas of concern, we consider the potential food security impacts of the recent rainfall declines and also rapid population growth. Looking forward, we consider what the links to SSTs might mean for rainfall in the next several decades based on SST projections. In addition to CenTrends, we use a variety of geographic data sets, including 1981-2014 rainfall from the Climate Hazards group InfraRed Precipitation with Stations (CHIRPSv2.0), simulated crop stress from the USGS Geospatial Water Requirement Satisfaction Index (GeoWRSI) model, NOAA Extended Reconstructed SSTs (ERSST v4), SST projections from the Coupled Model Intercomparison Project (CMIP5), and land cover and population maps from SERVIR, WorldPOP, and CIESIN's Gridded Population of the World. The long-term CenTrends record allows us to suggest an interesting dichotomy in decadal rainfall forcing. During the March to June season, SSTs in the west Pacific appear to be driving post-1980 rainfall reductions in northern Tanzania. In the 2000s, northern Tanzania's densely populated Pangani River, Internal Drainage, and Lake Victoria basins experienced the driest period in more than a century. During summer, negative trends in southern Tanzania appear linked to a negative SST trend in the Nino3.4 region. Since the SST trend in the west (east) Pacific appears strongly influenced by global warming (natural decadal variability), we suggest that water resources in northern Tanzania may face increasing challenges, but that this will be less the case in southern Tanzania.

DASAO: software tool for the management of safeguards, waste and decommissioning

International Nuclear Information System (INIS)

Noynaert, Luc; Verwaest, Isi; Libon, Henri; Cuchet, Jean-Marie

2013-01-01

Decommissioning of nuclear facilities is a complex process involving operations such as detailed surveys, decontamination and dismantling of equipment's, demolition of buildings and management of resulting waste and nuclear materials if any. This process takes place in a well-developed legal framework and is controlled and followed-up by stakeholders like the Safety Authority, the Radwaste management Agency and the Safeguards Organism. In the framework of its nuclear waste and decommissioning program and more specifically the decommissioning of the BR3 reactor, SCK-CEN has developed different software tools to secure the waste and material traceability, to support the sound management of the decommissioning project and to facilitate the control and the follow-up by the stakeholders. In the case of Belgium, it concerns the Federal Agency for Nuclear Control, the National Agency for radioactive waste management and fissile material and EURATOM and IAEA. In 2005, Belgonucleaire decided to shutdown her Dessel MOX fuel fabrication plant and the production stopped in 2006. According to the final decommissioning plan ('PDF') approved by NIRAS, the decommissioning works should start in 2008 at the earliest. In 2006, the management of Belgonucleaire identified the need for an integrated database and decided to entrust SCK-CEN with its development, because SCK-CEN relies on previous experience in comparable applications namely already approved by authorities such as NIRAS, FANC and EURATOM. The main objectives of this integrated software tool are: - simplified and updated safeguards; - waste and material traceability; - computerized documentation; - support to project management; - periodic and final reporting to waste and safety authorities. The software called DASAO (Database for Safeguards, Waste and Decommissioning) was successfully commissioned in 2008 and extensively used from 2009 to the satisfaction of Belgonucleaire and the stakeholders. SCK-CEN is

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.

Status report on ECR stripped ion sources at CEN Grenoble

International Nuclear Information System (INIS)

Geller, R.; Jacquot, B.

1981-01-01

MICROMAFIOS is a small-scale version of SUPERMAFIOS (Briand et al. 1979, Geller et al. 1980); the confinement structure of the magnetic well of the stripper stage results from the superimposition of solenoidal magnetic field upon an hexapolar magnetic field created by permanent SmCo 5 magnets. This innovation leads to a very compact ion source (approx. 50 cm in length) which consumes < 100 kW of electric power (30 times less electricity than SUPERMAFIOS) and less than 2 kW of UHF power to create and heat the plasma. In addition, the coupling of the UHF waves to the plasma, has been simplified to the extreme. The incident wave is not polarised and the coupling is done in multimode cavities, whatever their shape. This eliminates the sophisticated technology of the profiled waveguides used in SUPERMAFIOS and the injection of the UHF power is made into the most convenient part of the multimode cavity. Thus, one does not take into consideration the theoretical anisotropic propagation of the waves in the magnetised plasma which presents preferential directions depending upon the polarisation modes of the wave and upon the dielectric coefficient of the plasma. (orig./FKS)

Status report on ECR stripped ion sources at CEN Grenoble

International Nuclear Information System (INIS)

Geller, R.; Jacquot, B.

1980-12-01

The MICROMAFIOS source described here is a small-scale version of SUPERMAFIOS; the confinement structure of the magnetic well of the stripper stage results from the superimposition of solenoidal magnetic fields upon a hexapolar magnetic field created by permanent SmCo 5 magnets. This innovation leads to a very compact ion source (approximatly 50 cm in length) which consumes < 100 kW of electric power (30 times less electricity than SUPERMAFIOS) and less than 2 kW of UHF power to create and heat the plasma. In addition, the coupling of the UHF waves to the plasma, has been simplified to the extreme. The incident wave is not polarised and the coupling is done in multimode cavities, whatever their shape. This eliminates the sophisticated technology of the profiled waveguides used in SUPERMAFIOS and the injection of the UHF power is made into the most convenient part of the multimode cavity

Radiation Protection: introduction

International Nuclear Information System (INIS)

Loos, M.

2005-01-01

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

Comparative FISH mapping of BMPR1B, BMP15 and GDF9 ...

Indian Academy of Sciences (India)

from INRA bovine BAC library (Biological Resources Cen- tre dedicated to livestock ... Iannuzzi L. 2001 International system for chromosome nomen- clature of domestic ... Published on the Web: 6 December 2013. Journal of Genetics, Vol.

Decision Strategy Research

International Nuclear Information System (INIS)

Hardeman, F.

2001-01-01

The objective of SCK-CEN's R and D programme on decision strategies is: (1) to study the decision-making process in a nuclear context with particular emphasis on emergency preparedness; (2) to disseminate knowledge on nuclear emergency preparedness including courses in the field of off-site emergency response to nuclear accidents; (3) to co-ordinate efforts within SCK-CEN in the field of medical applications of radiation; (4) to support projects and reflexion groups related to interdisciplinary research on the no-technical aspects of radiation protection or nuclear apllications; (5) to give advice and support to authorities and the industry on any topic related to radiation protection and to make expertise and infrastructure available. Main focus of the programme is on the surveillance of the territory and emergency preparedness. Principal achievements in 2000 are described

A 4D spacetime embedded in a 5D pseudo-Euclidean space describing interior of compact stars

Energy Technology Data Exchange (ETDEWEB)

Singh, K.N. [National Defence Academy, Department of Physics, Khadakwasla (India); Murad, Mohammad Hassan [BRAC University, Department of Mathematics and Natural Sciences, Dhaka (Bangladesh); Pant, Neeraj [National Defence Academy, Department of Mathematics, Khadakwasla (India)

2017-02-15

The present paper provides a new model of compact stars satisfying the Karmarkar condition. The model is obtained by assuming a new type of metric potential for g{sub rr} from the condition of embedding class I. The model parameters are obtained accordingly by employing the metric potentials to Einstein's field equations. Our model is free from geometric singularity and satisfies all the physical conditions. The obtained mass and radius of the compact stars Cen X-3, EXO 1785-248 and SAX 1808.4-3658 obtained from the model are consistent with the observational data of T. Gangopadhyay et al. Detailed analyses of these neutron stars (Cen X-3, EXO 1785-248 and SAX 1808.4-3658) are also given with the help of graphical representations. (orig.)

Modeling gas migration experiments in repository host rocks for the MEGAS project

International Nuclear Information System (INIS)

Worgan, K.; Impey, M.; Volckaert, G.; DePreter, P.

1993-01-01

In response to concerns over the possibility of hydrogen gas generation within an underground repository for high-level radioactive waste, and its implications for repository safety, a joint European research study (MEGAS) is underway. Its aims are to understand and characterize the behavior of gas migration within an argillacious, host-rock. Laboratory experiments are being carried out by SCK/CEN, BGS and ISMES. SCK/CEN are also conducting in situ experiments at the underground laboratory at Mol, Belgium. Modeling of gas migration is being done in parallel with the experiments, by Intera Information Technologies. A two-phase flow code, TOPAZ, has been developed specifically for this work. In this paper the authors report on the results of some preliminary calculations performed with TOPAZ, in advance of the in situ experiments

Pulse periods and the long-term variations of the X-ray pulsars VELA X-1 and Centaurus X-3

Science.gov (United States)

Tsunemi, Hiroshi

The paper reports recent determinations of the pulse period for two X-ray pulsars, Vela X-1 and Cen X-3, made in 1987 with the All Sky Monitor (ASM) on board the Ginga satellite. The heliocentric pulse periods are 283.09 + or - 0.01 s and 4.8229 + or - 0.0001 s, respectively. These are the longest and shortest values in their respective observational histories. The random walk model for the Vela X-1 pulsar can explain this result as well as those obtained previously. It is also noted that the pulse-period change for the Cen X-3 system shows a 9-yr periodicity. This is probably due to the activity of the companion star rather than to Doppler-shift variations due to a third body or the precession of the neutron star.

A spectroscopic study of chemical abundances in the globular cluster Omega Centauri

International Nuclear Information System (INIS)

Caldwell, S.P.

1987-10-01

Blue spectra at a resolution of 0.5 A of red giants in the globular clusters Omega Centauri and NGCs 288, 362, 6397 and 6809 (M55) have been obtained with the Anglo-Australian Telescope. The observations were made to test Sweigart and Mengel's [Astrophy S. J. 229, 624] theory of mixing of nuclearly-processed material to the star's surface, and to elucidate the relationship between primordial and evolutionary origins for the range in abundance within Omega Cen. The Omega Cen stars were chosen in two groups either side of the giant branch, covering the luminosity range where the onset of mixing was predicted to occur. Abundances of C, N, Fe and other heavy elements have been determined by fitting synthetic spectra, calculated from model atmospheres, to the observational data. (author)

The use of Limestone Powder as an Alternative Cement Replacement

African Journals Online (AJOL)

user

focused on the effects of limestone on the cement ... construction materials in Ethiopia is increasing .... Findings of research works on the strength reveals ... This CEN standard sand is delivered ... control mix made without limestone fines.

Abderrahim, H.A

International Nuclear Information System (INIS)

Reactor Physics

1998-01-01

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

ISO and EIGA standards for cryogenic vessels and accessories

CERN Multimedia

CERN. Geneva

2016-01-01

The EIGA/WG 6’s scope is cryogenic vessels and accessories, including their design, material compatibility, operational requirements and periodical inspection. The specific responsibilities include monitoring international standardization (ISO, CEN) and regulations (UN, TPED, PED...

Mol - Research Division report 1987 - 2

International Nuclear Information System (INIS)

Delbarre, J.

1988-03-01

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)

Mol - Research Division report 1987 - 1

International Nuclear Information System (INIS)

Delbarre, J.

1987-10-01

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)

Tidal variations in the Sundarbans Estuarine System, India

Indian Academy of Sciences (India)

gle channel; estuaries of this type are by far the most numerous .... the observation stations and describe the methods used. ...... The Cen- tral Inland Fisheries Research Institute, in their .... Qualitative information regarding tidal levels and the ...

Análise de cointegração e geração de cenários na alocação de investimentos em previdência complementar [doi: 10.5329/RECADM.2013023

Directory of Open Access Journals (Sweden)

Wesley Vieira Silva

2013-12-01

Full Text Available ANÁLISE DE COINTEGRAÇÃO E GERAÇÃO DE CENÁRIOS NA ALOCAÇÃO DE INVESTIMENTOS EM PREVIDÊNCIA COMPLEMENTAR   RESUMO O objetivo desse trabalho é apresentar uma aplicação por meio da modelagem de alocação de carteiras de investimentos analisando as relações de longo prazo entre os ativos financeiros e indicadores econômicos, por meio da técnica de cointegração. Os dados observados são séries temporais de indicadores econômicos e do mercado financeiro, compreendendo o período de implantação do plano Real. Os resultados obtidos auxiliam na compreensão da estrutura de decisão de uma Entidade Fechada de previdência complementar, gerando informações sobre as relações de longo prazo das variáveis que servem como subsídio para a geração de cenários probabilísticos. As diversas táticas de investimentos são avaliadas quanto ao seu desempenho ao longo de 40 anos de projeção. A validação dos resultados é realizada pautando-se no pacote estatístico S-Plus, permitindo um aprofundamento sobre a estratégia a ser adotada, levando-se em consideração a necessidade de gestão dos riscos, em específico aqueles associados à manutenção da solvência do plano de previdência.   Palavras-chave Asset Liability Management (ALM; Fundos de Pensão; Cointegração.     GENERATION OF SCENARIOS AND COINTEGRATION ANALYSIS FOR ALLOCATION INVESTMENT IN SUPPLEMENTARY PENSION FUND   ABSTRACT The objective of this work is to present for an investment portfolio allocation taking into consideration long-term relations between financial assets and economy indexes. The observed data are from a time series of economic indicators, as well the financial market, encompassing the period of the Real Plan establishment. The gathered results assist in the understanding of decision structures from a Closed Pension Fund, generating information on the relations of long-term period from variables which can be used as parameters for probabilistic

Chemical Engineering Division annual technical report, 1980

International Nuclear Information System (INIS)

Burris, L.; Webster, D.S.; Barney, D.L.; Cafasso, F.A.; Steindler, M.J.

1981-06-01

Highlights of the Chemical Engineering (CEN) Division's activities during 1980 are presented. In this period, CEN conducted research and development in the following areas: (1) rechargeable lithium-aluminum/iron sulfide batteries for electric vehicles and other applications; (2) ambient-temperature batteries - improved lead-acid, nickel/zinc, and nickel/iron - for electric vehicles; (3) energy-efficient industrial electrochemical processes; (4) molten carbonate fuel cells for use by electric utilities; (5) coal technology, mainly fluidized-bed combustion of coal in the presence of SO 2 sorbent of limestone; (6) heat- and seed-recovery technology for open-cycle magnetohydrodynamic systems; (7) solar energy collectors and thermal energy storage; (8) fast breeder reactor chemistry research - chemical support of reactor safety studies, chemistry of irradiated fuels, and sodium technology; (9) fuel cycle technology - management of nuclear wastes, reprocessing of nuclear fuels, and proof-of-breeding studies for the Light Water Breeder Reactor; and (10) magnetic fusion research - systems analysis and engineering experimentation, materials research, and neutron dosimetry and damage analysis. The CEN Division also has a basic energy sciences program, which includes experimental and theoretical research on (1) the catalytic hydrogenation of carbon monoxide and methanol homologation, (2) the thermodynamic properties of a wide variety of inorganic and organic materials, (3) significant mechanisms for the formation of atmospheric sulfate and nitrogen-bearing aerosols, (4) processes occurring at electrodes and in electrolytes, and (5) the physical properties of salt vapors. In addition, the Division operated the Central Analytical Chemistry Laboratory

A regulação, diversificação e investimentos no exterior - impactos na eficiência da gestão dos investimentos dos fundos de pensão brasileiros sob a ótica da teoria do portfólio.

Directory of Open Access Journals (Sweden)

Luiz da Penha Souza da Silva

2011-01-01

Full Text Available O presente trabalho procura explorar, sob a ótica da teoria de portfólio, os efeitos da diversificação dos ativos para os fundos de pensão brasileiros em função de quatro cenários factíveis para taxas de juros reais no Brasil, bem como, identificar as implicações para uma alocação mais eficiente, incluindo ou não investimento no exterior, em função das limitações impostas pela regulamentação em vigor. Os resultados das simulações mostraram que a imposição de limites para alocação não só restringe a fronteira eficiente como a desloca para direita. Logo, a diversificação além dos limites permitidos pela legislação melhora a eficiência da alocação (reduzindo o risco, sendo tal comportamento acentuado com a inclusão de investimentos no exterior. Por fim o trabalho forneceu evidências que, tecnicamente, em qualquer cenário os fundos de pensão brasileiros podem melhorar ainda mais a eficiência na alocação dos recursos; sobretudo no cenário de estabilidade, com taxas de juros reais em torno de 4% ao ano, é imprescindível a alocação em ativos alternativos incluindo investimentos no exterior.

Integração de modelos espaciais e temporais para predições de níveis freáticos extremos

Directory of Open Access Journals (Sweden)

Rodrigo Lilla Manzione

2012-09-01

Full Text Available O objetivo deste trabalho foi avaliar cenários de níveis freáticos extremos, em bacia hidrográfica, por meio de métodos de análise espacial de dados geográficos. Avaliou-se a dinâmica espaço‑temporal dos recursos hídricos subterrâneos em área de afloramento do Sistema Aquífero Guarani. As alturas do lençol freático foram estimadas por meio do monitoramento de níveis em 23 piezômetros e da modelagem das séries temporais disponíveis de abril de 2004 a abril de 2011. Para a geração de cenários espaciais, foram utilizadas técnicas geoestatísticas que incorporaram informações auxiliares relativas a padrões geomorfológicos da bacia, por meio de modelo digital de terreno. Esse procedimento melhorou as estimativas, em razão da alta correlação entre altura do lençol e elevação, e agregou sentido físico às predições. Os cenários apresentaram diferenças quanto aos níveis considerados extremos - muito profundos ou muito superficiais - e podem subsidiar o planejamento, o uso eficiente da água e a gestão sustentável dos recursos hídricos na bacia.

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

Safeguards and Physics Measurements: Services

International Nuclear Information System (INIS)

Carchon, R.

2000-01-01

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

Prospects of the "WSO-UV" Project for Star Formation Study in Nearby Dwarf Galaxies

Science.gov (United States)

Makarova, L. N.; Makarov, D. I.

2017-12-01

In the present work we consider the questions of star formation and evolution of nearby dwarf galaxies. We describe the method of star formation history determination based on multicolor photometry of resolved stars and models of color-magnitude diagrams of the galaxies. We present the results of star formation rate determination and its dependence on age and metallicity for dwarf irregular and dwarf spheroidal galaxies in the two nearby galaxy groups M81 and Cen A. Similar age of the last episode of star formation in the central part of the M81 group and also unusually high level of metal enrichment in the several galaxies of the Cen A group are mentioned. We pay special attention to the consideration of perspectives of star formation study in nearby dwarf galaxies with he new WSO-UV observatory.

Decision Strategy Research

Energy Technology Data Exchange (ETDEWEB)

Hardeman, F

2001-04-01

The objective of SCK-CEN's R and D programme on decision strategies is: (1) to study the decision-making process in a nuclear context with particular emphasis on emergency preparedness; (2) to disseminate knowledge on nuclear emergency preparedness including courses in the field of off-site emergency response to nuclear accidents; (3) to co-ordinate efforts within SCK-CEN in the field of medical applications of radiation; (4) to support projects and reflexion groups related to interdisciplinary research on the no-technical aspects of radiation protection or nuclear apllications; (5) to give advice and support to authorities and the industry on any topic related to radiation protection and to make expertise and infrastructure available. Main focus of the programme is on the surveillance of the territory and emergency preparedness. Principal achievements in 2000 are described.

Cyanogen strengths of globular cluster post-main-sequence stars

International Nuclear Information System (INIS)

Hesser, J.E.; Hartwick, F.D.A.; McClure, R.D.

1976-01-01

CN strengths in the peculiar clusters ω Cen and M22 and the metal-rich clusters 47 Tuc, M71, and NGC 6352 are found to vary markedly from star to star. The strong variations in CN strength found earlier for ω Cen by Norris and Bessell and by Dickens and Bell are shown to extend to fainter stars, although expected correlations of CN strength with position in the color-magnitude (C-M) diagram are less evident in our sample. Several CN and metal-strong stars were also observed in M22. We conclude that CN, once it appears in globular clusters, can vary much more than it does in equivalent Population I samples, a result we briefly examine in light of current understanding regarding physical processes in the stars themselves and of models of galactic chemical evolution

NEW MEMBERS OF THE SCORPIUS-CENTAURUS COMPLEX AND AGES OF ITS SUB-REGIONS

Energy Technology Data Exchange (ETDEWEB)

Song, Inseok [Department of Physics and Astronomy, The University of Georgia, Athens, GA 30602-2451 (United States); Zuckerman, B. [Department of Physics and Astronomy, University of California, Los Angeles, 475 Portola Plaza, Los Angeles, CA 90095-1547 (United States); Bessell, M. S. [Research School of Astronomy and Astrophysics, Institute of Advanced Studies, The Australian National University, ACT 2611 (Australia)

2012-07-15

We have spectroscopically identified {approx}100 G-, K-, and M-type members of the Scorpius-Centaurus complex. To deduce the age of these young stars we compare their Li {lambda}6708 absorption line strengths against those of stars in the TW Hydrae association and {beta} Pictoris moving group. These line strengths indicate that Sco-Cen stars are younger than {beta} Pic stars whose ages of {approx}12 Myr have previously been derived from a kinematic traceback analysis. Our derived age, {approx}10 Myr, for stars in the Lower Centaurus Crux and Upper Centaurus Lupus subgroups of ScoCen is younger than previously published ages based on the moving cluster method and upper main-sequence fitting. The discrepant ages are likely due to an incorrect (or lack of) cross-calibration between model-dependent and model-independent age-dating methods.

Les Bruits en lettres brute. Variations onomatopéiques dans trois mouvements d’avant-garde au XXe siècle: Futurisme, Dadaïsme, Lettrisme

Directory of Open Access Journals (Sweden)

Noemie Fargier

2017-07-01

Full Text Available Standing between an original expression and a universal language, a poetic game and a linguistic system, onomatopoeia occupied a cen­tral spot in three avan­t-gardes of the twen­tieth-cen­tury: futurism, dadaism, lettrism, regarding their own artistic research and the competition between them. Audible, graphic and linguistic material composing works halfway between poetry, music and graphic arts, onomatopoeia seems to converge in the three avan­t-gardes’ artistic and historic goals because of their intermedial, interdisciplinary and transnational dimension. They assert themselves by shaping this ambiguous material in a new approach, and each of them pretends to be the inven­tor of the onomatopoeic creation. Questioning origin, onomatopoeia looks however toward novelty, and wish to appear as a modern medium, with which the so-called fossilized arts could be revolutionized.

Irradiation tests in BR2 of miniature fission chambers in pulse, Campbelling and current mode

Energy Technology Data Exchange (ETDEWEB)

Vermeeren, L. [SCK.CEN, Boeretang 200, B-2400 Mol (Belgium); Geslot, B.; Breaud, S.; Filliatre, P.; Jammes, C. [CEA/DEN/SPEx/LDCI, Centre de Cadarache, F-13109 Saint-Paul-lez-Durance (France); Legrand, A. [CEA/DEN/DRSN/SIREN/LASPI Saclay, F-91191 Gif sur Yvette Cedex (France); Barbot, L. [CEA/DEN/SPEx/LDCI, Centre de Cadarache, F-13109 Saint-Paul-lez-Durance (France)

2011-07-01

The FNDS system ('Fast Neutron Detection System') for the on-line in-pile detection of the fast neutron flux in the presence of a significant thermal neutron flux and a high gamma dose rate is being developed in the framework of the SCK.CEN-CEA Laboratoire Commun. The system has been patented in 2008. The system consists of a miniature Pu-242 fission chamber as main detector, complemented by a U-235 fission chamber or a rhodium Self-Powered Neutron Detector (SPND) for thermal neutron flux monitoring and a dedicated acquisition system that also takes care of the processing of the signals from both detectors to extract fast neutron flux data. This paper describes a FNDS qualification experiment in the SCK.CEN BR2 reactor, with experimental results on a large set of fission chambers in current and Campbelling mode. (authors)

Irradiation tests in BR2 of miniature fission chambers in pulse, Campbelling and current mode

International Nuclear Information System (INIS)

Vermeeren, L.; Geslot, B.; Breaud, S.; Filliatre, P.; Jammes, C.; Legrand, A.; Barbot, L.

2011-01-01

The FNDS system ('Fast Neutron Detection System') for the on-line in-pile detection of the fast neutron flux in the presence of a significant thermal neutron flux and a high gamma dose rate is being developed in the framework of the SCK.CEN-CEA Laboratoire Commun. The system has been patented in 2008. The system consists of a miniature Pu-242 fission chamber as main detector, complemented by a U-235 fission chamber or a rhodium Self-Powered Neutron Detector (SPND) for thermal neutron flux monitoring and a dedicated acquisition system that also takes care of the processing of the signals from both detectors to extract fast neutron flux data. This paper describes a FNDS qualification experiment in the SCK.CEN BR2 reactor, with experimental results on a large set of fission chambers in current and Campbelling mode. (authors)

The merit of cogeneration: Measuring and rewarding performance

International Nuclear Information System (INIS)

Verbruggen, Aviel

2008-01-01

Cogeneration or combined heat and power (CHP) is a thermal power generation cycle with the merit of recovering part or all of the heat that is fatally discarded by such cycles. This merit of higher efficiency is subject of rewarding by public authorities. When the EU enacts CHP promotion in a Directive (1997-2004), crucial measurement and qualification issues remain unsolved. CEN (coordinator of the European Bureaus of Standards) contributes in clarifying the measurement of CHP activities, but shortfalls remain, while CEN bypasses the debate on qualifying CHP performance. This article offers appropriate methods for measuring CHP activities based on design characteristics of the plants. The co-generated electric output is a necessary and sufficient indicator of CHP merit and performance. Regulators can extend this indicator, but should avoid the perverse effects of biased external benchmarking as the EU Directive entails

MYRRHA: A multipurpose accelerator driven system for research and development

International Nuclear Information System (INIS)

Van Tichelen, K.; Malambu, E.; Benoit, Ph.; Kupschus, P.; Ait Abderrahim, H.

2000-01-01

The development of a new nuclear installation that is able to fulfil the economical, social, environmental and technological demands, is of first importance for the future of sustainable energy provision. Accelerator Driven Systems can pave the way for a more environ- mentally safe and acceptable nuclear energy production. Fundamental and applied R and D are crucial in the development of ADS technologies and demand the availability of appropriate prototype installations. In answer to this need and in order to update its current irradiation potential, the Belgian Nuclear Research Centre (SCK.CEN) has launched the Myrrha project. It is focussed on the design, development and realisation of a modular and flexible irradiation facility based on ADS. This paper describes the concept, the applications fore- seen in the Myrrha installation and the accompanying design activities currently being performed at SCK.CEN. (authors)

O novo orçamento militar dos Estados Unidos

Directory of Open Access Journals (Sweden)

João Fábio Bertonha

2011-09-01

Full Text Available Tendo no atual orçamento militar dos Estados Unidos o ponto de partida, o presente artigo busca analisar o atual poderio militar daquele país, e os impactos deste no cenário internacional.

Mol - Research Division Report 1986 - 1

International Nuclear Information System (INIS)

Delbarre, J.; Assche, P. van

1986-11-01

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)

Reactor physics

International Nuclear Information System (INIS)

Ait Abderrahim, H.

1998-01-01

Progress in research on reactor physics in 1997 at the Belgian Nuclear Research Centre SCK/CEN is described. Activities in the following four domains are discussed: core physics, ex-core neutron transport, experiments in Materials Testing Reactors, international benchmarks

Better detection for a safer world. New developments that give a clear picture of radioactivity

International Nuclear Information System (INIS)

2014-01-01

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.

77 FR 16119 - Agency Information Collection Activities; Proposed Collection; Comment Request; Report of...

Science.gov (United States)

2012-03-19

... and FinCEN's implementing regulations, or to guard against money laundering, which includes imposing anti-money laundering (``AML'') program requirements on financial institutions.\\4\\ \\1\\ The BSA is... of use in investigations involving international and domestic money laundering, tax evasion, fraud...

O retorno ao equilíbrio do terror atômico

Directory of Open Access Journals (Sweden)

Virgílio Caixeta Arraes

2010-12-01

Full Text Available O presente artigo busca realizar uma análise histórica acerca do desenvolvimento do denominado “equilíbrio de terror atômico” e de seu súbito reaparecimento no cenário internacional.

77 FR 27381 - Financial Crimes Enforcement Network: Customer Due Diligence Requirements for Financial...

Science.gov (United States)

2012-05-10

...-AB15 Financial Crimes Enforcement Network: Customer Due Diligence Requirements for Financial... concerning customer due diligence requirements for financial institutions. DATES: Written comments on the... customer due diligence requirements for financial institutions.\\1\\ FinCEN received several comments on the...

EU-US standards harmonization task group report : feedback to standards development organizations - security

Science.gov (United States)

2012-11-12

Harmonization Task Groups 1 and 3 (HTG1 and 3) were established by the EU-US International Standards Harmonization Working Group to attempt to harmonize standards (including ISO, CEN, ETSI, IEEE) on security (HTG1) and communications protocols (HTG3)...

EU-US standards harmonization task group report : feedback to ITS standards development organizations communications.

Science.gov (United States)

2012-11-01

Harmonization Task Groups 1 and 3 (HTG1 and 3) were established by the EU-US International Standards Harmonization Working Group to attempt to harmonize standards (including ISO, CEN, ETSI, IEEE) on security (HTG1) and communications protocols (HTG3)...

EU-US standards harmonization task group report : stakeholder engagement and comment resolution.

Science.gov (United States)

2012-11-01

Harmonization Task Groups 1 and 3 (HTG1 and 3) were established by the EU-US International Standards Harmonization Working Group to attempt to harmonize standards (including ISO, CEN, ETSI, IEEE) on security (HTG1) and communications protocols (HTG3)...

The problem of isotropic rectangular plate with four clamped edges

Indian Academy of Sciences (India)

of rectangular plates has been a subject of study in solid mechanics for more than a cen- .... loading is solved first, giving the deflection function for the strip case and .... The authors gratefully acknowledge the advice and encouragement of ...

Travel Survey Manual

Science.gov (United States)

2012-11-01

Harmonization Task Groups 1 and 3 (HTG1 and 3) were established by the EU-US International Standards Harmonization Working Group to attempt to harmonize standards (including ISO, CEN, ETSI, IEEE) on security (HTG1) and communications protocols (HTG3)...

EU-US standards harmonization task group report : status of ITS communication standards.

Science.gov (United States)

2012-11-01

Harmonization Task Groups 1 and 3 (HTG1 and 3) were established by the EU-US International Standards Harmonization Working Group to attempt to harmonize standards (including ISO, CEN, ETSI, IEEE) on security (HTG1) and communications protocols (HTG3)...

Theoretical and experimental investigations of the thermo-hydraulics of deformed wire-wrapped bundles in nominal flow conditions

International Nuclear Information System (INIS)

Leteinturier, D.; Cartier, L.

1979-01-01

Theoretical and experimental studies undertaken in CEN Cadarache on deformed subassemblies are presented. After the mainlines description of this program first temperature distribution results are given on an in-pile experiment in RAPSODIE (61 pins). Comparison with calculation is made

Waste Disposal

International Nuclear Information System (INIS)

Neerdael, B.; Marivoet, J.; Put, M.; B-Verstricht, J.; Van Iseghem, P.; Buyens, M.

1998-01-01

This contribution describes the main activities of the Waste and Disposal Department of the Belgian Nuclear Research Center SCK-CEN. Achievements in 1997 in three topical areas are reported on: performance assessments, waste forms/packages and near-and far field studies

Reasons of an experimental effort for pebble bed reactors. A program of measurements in the CESAR reactor at Cadarache

Energy Technology Data Exchange (ETDEWEB)

Scherer, W; Bock, H J; Krings, F; Neef, R D; Langlet, G; Dixmier, M; Laponche, B; Morier, F

1972-06-15

An extended experimental program on neutron physics of HTR fuel balls is being performed in the graphite moderated critical faclity CESAR at CEN Cadarache (France). The experiments are done in the frame of a cooperation between KFA Juelich and CEA Cadarache.

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

Validation on milk and sprouts of EN ISO 16654:2001 - Microbiology of food and animal feeding stuffs - Horizontal method for the detection of Escherichia coli O157.

Science.gov (United States)

Tozzoli, Rosangela; Maugliani, Antonella; Michelacci, Valeria; Minelli, Fabio; Caprioli, Alfredo; Morabito, Stefano

2018-05-08

In 2006, the European Committee for standardisation (CEN)/Technical Committee 275 - Food analysis - Horizontal methods/Working Group 6 - Microbiology of the food chain (TC275/WG6), launched the project of validating the method ISO 16654:2001 for the detection of Escherichia coli O157 in foodstuff by the evaluation of its performance, in terms of sensitivity and specificity, through collaborative studies. Previously, a validation study had been conducted to assess the performance of the Method No 164 developed by the Nordic Committee for Food Analysis (NMKL), which aims at detecting E. coli O157 in food as well, and is based on a procedure equivalent to that of the ISO 16654:2001 standard. Therefore, CEN established that the validation data obtained for the NMKL Method 164 could be exploited for the ISO 16654:2001 validation project, integrated with new data obtained through two additional interlaboratory studies on milk and sprouts, run in the framework of the CEN mandate No. M381. The ISO 16654:2001 validation project was led by the European Union Reference Laboratory for Escherichia coli including VTEC (EURL-VTEC), which organized the collaborative validation study on milk in 2012 with 15 participating laboratories and that on sprouts in 2014, with 14 participating laboratories. In both studies, a total of 24 samples were tested by each laboratory. Test materials were spiked with different concentration of E. coli O157 and the 24 samples corresponded to eight replicates of three levels of contamination: zero, low and high spiking level. The results submitted by the participating laboratories were analyzed to evaluate the sensitivity and specificity of the ISO 16654:2001 method when applied to milk and sprouts. The performance characteristics calculated on the data of the collaborative validation studies run under the CEN mandate No. M381 returned sensitivity and specificity of 100% and 94.4%, respectively for the milk study. As for sprouts matrix, the sensitivity

Compatibilidade de Dicyma pulvinata com defensivos agrícolas e eficiência do biocontrole do mal-das-folhas da seringueira em campo Compatibility of Dicyma pulvinata with pesticides and biocontrol efficiency of South American leaf blight of rubber tree under field conditions

Directory of Open Access Journals (Sweden)

Débora Ferreira Melo

2008-02-01

Full Text Available O objetivo deste trabalho foi avaliar quatro isolados do fungo antagonista Dicyma pulvinata quanto à compatibilidade com defensivos agrícolas e adjuvantes, e a eficiência desses isolados no controle do mal-das-folhas (Microcyclus ulei da seringueira (Hevea sp. em campo. A compatibilidade dos isolados com defensivos e adjuvantes foi avaliada com base no crescimento micelial e na esporulação do fungo, em testes conduzidos in vitro. Para avaliação da eficiência do antagonista contra M. ulei, em campo, os quatros isolados do antagonista foram comparados ao controle exercido pelo tratamento com os fungicidas propiconazol + mancozeb. Os ensaios conduzidos em laboratório indicaram a incompatibilidade de D. pulvinata com os fungicidas benomyl, carbendazim, mancozeb, propiconazol e, ainda, com o inseticida acaricida endosulfan. Dois dos adjuvantes testados (Tween 20 e Tween 80 não afetaram o desenvolvimento do fungo. Foi comprovada a ação do antagonista D. pulvinata sobre M. ulei, em campo, com destaque para os isolados CEN 62 e CEN 93, que apresentaram eficiência de controle semelhante ao tratamento fungicida padrão.The objective of this work was to evaluate four isolates of the antagonist fungus Dicyma pulvinata in terms of its compatibility with chemical pesticides and adjuvants products, and the efficiency of these isolates as biocontrol agent against South American leaf blight (Microcyclus ulei of rubber tree (Hevea sp. under field conditions. Isolates compatibility with chemical pesticides and adjuvants was evaluated on mycelial growth and fungus sporulation in vitro. To assess the efficiency of the antagonist against M. ulei under field conditions, the four isolates were compared to the control by the fungicide mixture propiconazol + mancozeb. The assays showed incompatibility of the antagonistic fungus with the fungicides benomyl, carbendazim, mancozeb, propiconazol, besides the insecticide-acaricide endosulfan. Two of the adjuvants

A CARTOGRAFIA GEOMORFOLÓGICA COMO SUBSÍDIO PARA A ANÁLISE DO RELEVO ANTROPOGÊNICO EM ÁREA DE MINERAÇÃO

Directory of Open Access Journals (Sweden)

Letícia Giuliana Paschoal

2013-09-01

Full Text Available Atividades de mineração estão diretamente relacionadas à alteração das paisagens naturais. Com o objetivo de analisar as alterações impostas à dinâmica geomorfológica através da ação antrópica em áreas de mineração de argila, foram selecionados dois fragmentos espaciais da bacia hidrográfica do Ribeirão Santa Gertrudes/SP, representativos de processos denudacionais e de sedimentação respectivamente. Esta área insere-se no contexto do Pólo Cerâmico de Santa Gertrudes/SP, que além de sua importância como fornecedora de matéria-prima, configura-se como o maior centro de referência internacional em pavimentos cerâmicos do continente americano. Para tanto, o desenvolvimento deste trabalho encontra respaldo na antropogeomorfologia amparada pela teoria geral dos sistemas e recorre a técnicas da cartografia geomorfológica evolutiva. Assim, produziram-se mapeamentos geomorfológicos referentes a três cenários, que datam de 1962, 1988 e 2006, na escala de detalhe de 1:10.000. Estes mapeamentos permitiram inferir uma averiguação detalhada da evolução das alterações ocorridas no relevo e na hidrografia, representativos da geomorfologia original (1962, que apresenta características de uma fase anterior a existência de grandes cavas de mineração; e sua evolução para um estágio geomorfológico antropogênico, representado pelos cenários de perturbação ativa datados de 1988 e 2006. Os dois últimos cenários analisados apresentam alterações nas dimensões das feições do relevo, se comparados com o cenário representativo da geomorfologia original, além de uma intensa realocação de materiais de superfície e subsuperficie, no qual a ação antrópica ganha destaque por se tornar responsável pelo esculpimento da paisagem por meio da imposição de mecanismos de controle aos processos naturais.

Mapping the factors affecting the frequency and types of micronuclei in an elderly population from Southern Bohemia

Energy Technology Data Exchange (ETDEWEB)

Rossnerova, Andrea, E-mail: andrearo@biomed.cas.cz [Department of Genetic Toxicology and Nanotoxicology, Institute of Experimental Medicine, Czech Academy of Sciences, 14220 Prague 4 (Czech Republic); Honkova, Katerina; Pavlikova, Jitka [Department of Genetic Toxicology and Nanotoxicology, Institute of Experimental Medicine, Czech Academy of Sciences, 14220 Prague 4 (Czech Republic); Skalicka, Zuzana Freitinger; Havrankova, Renata [Institute of Radiology, Toxicology and Civil Protection, University of South Bohemia, 37005 Ceske Budejovice (Czech Republic); Solansky, Ivo; Rossner, Pavel; Sram, Radim J. [Department of Genetic Toxicology and Nanotoxicology, Institute of Experimental Medicine, Czech Academy of Sciences, 14220 Prague 4 (Czech Republic); Zölzer, Friedo [Institute of Radiology, Toxicology and Civil Protection, University of South Bohemia, 37005 Ceske Budejovice (Czech Republic)

2016-11-15

Highlights: • Factors affecting the frequency and types of micronuclei were mapped. • The effect of former uranium exposure and later X-ray examination was studied. • An increase of CEN+ MN (chromosome losses) in the fall season was observed. • Lower DNA damage after X-ray examination was found in cases of previous exposure. - Abstract: The micronucleus assay is one of the most common methods used to assess chromosomal damage (losses or breaks) in human peripheral blood lymphocytes (PBL) in genetic toxicology. Most studies have focused on analyzing total micronuclei (MN), but identifying the content of MN can provide more detailed information. The main aim of this study was to map the factors affecting the frequency and types of micronuclei in binucleated cells (BNC) in elderly population. Fluorescence in situ hybridization using Human Pan Centromeric Chromosome Paint was used to identify centromere positive (CEN+) or centromere negative (CEN-) MN. A group of 95 men from Southern Bohemia, Czech Republic (average age 68.0 ± 6.8 years) was followed repeatedly, in spring and fall 2014. The study participants were former workers of the uranium plant “MAPE Mydlovary” (processing uranium ore from 1962 to 1991), and controls. The general profile of individual types of MN, and the effect of the season, former uranium exposure, age, smoking status, weight, and X-ray examination on the level and type of MN were analyzed. The results of this study showed: (i) a stable profile of BNC with MN based on the number of MN during two seasons; (ii) an increase of the number of CEN+ MN from spring to fall; (iii) a lower frequency of the total MN in the exposed group than in controls with a significant difference in the percentage of aberrant cells (%AB.C.) in the fall; (iv) no clear effect of age, smoking and BMI on DNA damage in this group; (v) lower DNA damage levels in former uranium workers who received X-ray examination later in life. In summary, the results indicate

Reactor Structure Materials: Nuclear Fuel

International Nuclear Information System (INIS)

Sannen, L.; Verwerft, M.

2000-01-01

Progress and achievements in 1999 in SCK-CEN's programme on applied and fundamental nuclear fuel research in 1999 are reported. Particular emphasis is on thermochemical fuel research, the modelling of fission gas release in LWR fuel as well as on integral experiments

Giridhar U Kulkarni

Indian Academy of Sciences (India)

G U Kulkarni is the Director of Centre for Nano and Soft Matter Sciences (CeNS), ... His research interests are focused on new strategies in the synthesis of ... use of crack network in desiccated colloidal layer as a template for growing metal ...

77 FR 16118 - Proposed Renewal Without Change; Comment Request; Customer Identification Programs for Various...

Science.gov (United States)

2012-03-19

... to prevent those financial institutions from being used to facilitate money laundering and the... and FinCEN's implementing regulations, or to guard against money laundering, which includes imposing anti-money laundering (``AML'') program requirements on financial institutions.\\4\\ \\1\\ The BSA is...

Department of Treasury Semiannual Regulatory Agenda

Science.gov (United States)

2010-04-26

... from the abuses of terrorist financing, money laundering, and other financial crime. The proposed... money laundering, terrorist financing, and other illicit transactions through the financial system. This... services posing lower risks of money laundering and terrorist financing from certain requirements. FinCEN...

75 FR 79837 - Semiannual Agenda and Fiscal Year 2011 Regulatory Plan

Science.gov (United States)

2010-12-20

.... financial system from the abuses of terrorist financing, money laundering, and other financial crime. The... furthering money laundering, terrorist financing, and other illicit transactions through the financial system... services posing lower risks of money laundering and terrorist financing from certain requirements. FinCEN...

European standards for composite construction

NARCIS (Netherlands)

Stark, J.W.B.

2000-01-01

The European Standards Organisation (CEN) has planned to develop a complete set of harmonized European building standards. This set includes standards for composite steel and concrete buildings and bridges. The Eurocodes, being the design standards, form part of this total system of European

Refurbishing the BR2 materials testing reactor

International Nuclear Information System (INIS)

Baugnet, J.M.; Dekeyser, J.; Gubel, P.

1995-01-01

SCK/CEN is refurbishing its BR2 reactor to allow its further operation during the next 15 years; in doing so, it chooses to keep BR2 available for future scientific and technological irradiation programs within an international context. (author) 2 figs

Radiation effects and hardness of semiconductor electronic devices for nuclear industry

International Nuclear Information System (INIS)

Payat, R.; Friant, A.

1988-01-01

After a brief review of industrial and nuclear specificity and radiation effects in electronics components (semiconductors) the need for a specific test methodology of semiconductor devices is emphasized. Some studies appropriate for nuclear industry at D. LETI/DEIN/CEN-SACLAY are related [fr

Effect of drying on leaching testing of treated municipal solid waste incineration APC-residues

DEFF Research Database (Denmark)

Hu, Y.; Hyks, Jiri; Astrup, Thomas

2008-01-01

Air-pollution-control (APC) residues from waste incinerators are hazardous waste according to European legislation and must be treated prior to landfilling. Batch and column leaching data determine which type of landfill can receive the treated APC-residues. CEN standards are prescribed...

Wilhelm Ostwald, the Father of Physical Chemistry

Indian Academy of Sciences (India)

research in chemical synthesis and by the end of the cen- tury scientists could ... The following concept is applied in the study of chemical affinities by observing .... A few early examples of catalysis were the trans- formation of starch into dextrin ...

MYRRHA: a multipurpose accelerator driven system for research and development

International Nuclear Information System (INIS)

Tichelen Van, K.; Malambu, E.; Benoit, Ph.; Kupschus, P.; Ait Abderrahim, H.; Vandeplassche, D.; Ternier, S.; Jongen, Y.

2001-01-01

The development of a new nuclear installation that is able to fulfil the economical, social, environmental and technological demands, is a cornerstone for the future provision of sustainable energy. Accelerator Driven Systems (ADS) can pave the way for a more environmentally safe and acceptable nuclear energy production. Fundamental and applied R and D are crucial in the development of ADS technologies and demand the availability of appropriate prototype installations. In answer to this need and in order to update its current irradiation potential, the Belgian Nuclear Research Centre (SCK·CEN), in partnership with Ion Beam Applications s. a. (IBA), is launching the MYRRHA project. It is focussed on the design, development and realisation of a modular and flexible irradiation facility based on the ADS concept. This paper describes the concept, the applications foreseen in the MYRRHA installation and the accompanying design activities currently being performed at SCK·CEN and IBA. (authors)

Underpinning the repurposing of anthracyclines towards colorectal cancer

DEFF Research Database (Denmark)

Nygård, Sune Boris; Christensen, Ib Jarle; Smith, David Hersi

2013-01-01

Abstract Objective. We propose a repurposing strategy where anthracyclines are reintroduced to a subgroup of patients with metastatic colorectal cancer with the highest likelihood of response. In breast cancer, DNA topoisomerase II alpha gene (TOP2A) alterations predict incremental benefit...... of anthracyclines, but this association has not been investigated in colorectal cancer. Frequency analysis of TOP2A gene alterations in colorectal cancer and the association with prognosis are evaluated and the challenges of using a TOP2A/CEN-17 FISH probe combination are addressed. Material and methods. Formalin......-fixed, paraffin-embedded material from 154 stage III colorectal cancer patients included in the RANX05 clinical trial was retrospectively assessed for TOP2A gene alterations using FISH. The TOP2A/CEN-17 ratio as well as the TOP2A gene copy number alone was used to define gene alterations and associations between...

PLANEJAMENTO ESTRATÉGICO DE UMA UNIVERSIDADE FEDERAL NA AMAZÔNIA: APLICAÇÃO DA ANÁLISE FATORIAL

Directory of Open Access Journals (Sweden)

Antônio Cordeiro de Santana

2014-12-01

Full Text Available O objetivo do trabalho foi aplicar a análise fatorial como instrumento metodológico no planejamento estratégico institucional para dar maior consistência e rigor científico ao processo de identificação dos pontos fortes, pontos fracos, oportunidades e ameaças, utilizados na construção de cenários futuros para o desenvolvimento sustentável de uma Universidade Rural da Amazônia. Os resultados gerados permitiram configurar os ambientes interno e externo da instituição e a elaboração de cenários futuros. Concluiu-se que análise fatorial pode ser um poderoso instrumento a ser utilizado na identificação dos elementos necessários à elaboração dos objetivos, metas e estratégias do planejamento estratégico institucional.

Comparison of Subcutaneous Regular Insulin and Lispro Insulin in Diabetics Receiving Continuous Nutrition: A Numerical Study.

Science.gov (United States)

Stull, Mamie C; Strilka, Richard J; Clemens, Michael S; Armen, Scott B

2015-06-30

Optimal management of non-critically ill patients with diabetes maintained on continuous enteral feeding (CEN) is poorly defined. Subcutaneous (SQ) lispro and SQ regular insulin were compared in a simulated type 1 and type 2 diabetic patient receiving CEN. A glucose-insulin feedback mathematical model was employed to simulate type 1 and type 2 diabetic patients on CEN. Each patient received 25 SQ injections of regular insulin or insulin lispro, ranging from 0-6 U. Primary endpoints were the change in mean glucose concentration (MGC) and change in glucose variability (GV); hypoglycemic episodes were also reported. The model was first validated against patient data. Both SQ insulin preparations linearly decreased MGC, however, SQ regular insulin decreased GV whereas SQ lispro tended to increase GV. Hourly glucose concentration measurements were needed to capture the increase in GV. In the type 2 diabetic patient, "rebound hyperglycemia" occurred after SQ lispro was rapidly metabolized. Although neither SQ insulin preparation caused hypoglycemia, SQ lispro significantly lowered MGC compared to SQ regular insulin. Thus, it may be more likely to cause hypoglycemia. Analyses of the detailed glucose concentration versus time data suggest that the inferior performance of lispro resulted from its shorter duration of action. Finally, the effects of both insulin preparations persisted beyond their duration of actions in the type 2 diabetic patient. Subcutaneous regular insulin may be the short-acting insulin preparation of choice for this subset of diabetic patients. Clinical trial is required before a definitive recommendation can be made. © 2015 Diabetes Technology Society.

Comparison of Subcutaneous Regular Insulin and Lispro Insulin in Diabetics Receiving Continuous Nutrition

Science.gov (United States)

Stull, Mamie C.; Strilka, Richard J.; Clemens, Michael S.; Armen, Scott B.

2015-01-01

Background: Optimal management of non–critically ill patients with diabetes maintained on continuous enteral feeding (CEN) is poorly defined. Subcutaneous (SQ) lispro and SQ regular insulin were compared in a simulated type 1 and type 2 diabetic patient receiving CEN. Method: A glucose-insulin feedback mathematical model was employed to simulate type 1 and type 2 diabetic patients on CEN. Each patient received 25 SQ injections of regular insulin or insulin lispro, ranging from 0-6 U. Primary endpoints were the change in mean glucose concentration (MGC) and change in glucose variability (GV); hypoglycemic episodes were also reported. The model was first validated against patient data. Results: Both SQ insulin preparations linearly decreased MGC, however, SQ regular insulin decreased GV whereas SQ lispro tended to increase GV. Hourly glucose concentration measurements were needed to capture the increase in GV. In the type 2 diabetic patient, “rebound hyperglycemia” occurred after SQ lispro was rapidly metabolized. Although neither SQ insulin preparation caused hypoglycemia, SQ lispro significantly lowered MGC compared to SQ regular insulin. Thus, it may be more likely to cause hypoglycemia. Analyses of the detailed glucose concentration versus time data suggest that the inferior performance of lispro resulted from its shorter duration of action. Finally, the effects of both insulin preparations persisted beyond their duration of actions in the type 2 diabetic patient. Conclusions: Subcutaneous regular insulin may be the short-acting insulin preparation of choice for this subset of diabetic patients. Clinical trial is required before a definitive recommendation can be made. PMID:26134836

How to Support the Integrate Management System through an Enterprise Content Management Platform?

International Nuclear Information System (INIS)

Couvreur, D.

2016-01-01

Full text: In 2010 the Belgian Nuclear Research Centre SCK-CEN decided to implement an ECM platform in order to manage its information. The main objectives were to centralize in one place all the right and latest versions of information, to improve the usage of internal information and to enhance the efficiency of our activities by standardization and by supporting document management processes. A programme of document migration for the whole institute was set up per group, running over four years. Steps were foreseen such as the comprehension of the activities of the end users in order to increase their efficiency, the analysis of type of documentation, the technical aspects, the migration of documents itself, the training and the most important steps—communication and supporting people to change. In 2013 SCK-CEN decided to implement an Integrated Management System. The objectives were i) to improve the safety performance of the organisation, ii) to foster, strengthen and support a strong safety and organizational culture through the development and reinforcement of good safety attitudes and behaviour in individuals and teams, iii) to structure, but at the same time simplify and make more transparent all processes of SCK-CEN clearly defining responsibilities and authorities, iv) to automate these processes by workflows and support the information and data flow by relevant databases. Intrinsically, both initiatives have the same end objective being the safety of the installations, of the knowledge and transfer of know-how on processes and projects related to radiation protection, reactor technology, waste and disposal, dismantling. In this paper, we will explain through examples. (author

Metallicity Spreads in M31 Globular Clusters

Science.gov (United States)

Bridges, Terry

2003-07-01

Our recent deep HST photometry of the M31 halo globular cluster {GC} Mayall II, also called G1, has revealed a red-giant branch with a clear spread that we attribute to an intrinsic metallicity dispersion of at least 0.4 dex in [Fe/H]. The only other GC exhibiting such a metallicity dispersion is Omega Centauri, the brightest and most massive Galactic GC, whose range in [Fe/H] is about 0.5 dex. These observations are obviously linked to the fact that both G1 and Omega Cen are bright and massive GC, with potential wells deep enough to keep part of their gas, which might have been recycled, producing a metallicity scatter among cluster stars. These observations dramatically challenge the notion of chemical homogeneity as a defining characteristic of GCs. It is critically important to find out how common this phenomenon is and how it can constrain scenarios/models of GC formation. The obvious targets are other bright and massive GCs, which exist in M31 but not in our Galaxy where Omega Cen is an isolated giant. We propose to acquire, with ACS/HRC, deep imaging of 3 of the brightest M31 GCs for which we have observed velocity dispersion values similar to those observed in G1 and Omega Cen. A sample of GCs with chemical abundance dispersions will provide essential information about their formation mechanism. This would represent a major step for the studies of the origin and evolution of stellar populations.

A Influência do Patrocínio Esportivo na Atitude sobre Marcas

Directory of Open Access Journals (Sweden)

Carlos Eugênio Zardini Filho

2017-06-01

Full Text Available Segundo Mason (2005, o patrocínio esportivo se caracteriza por aumentar a frequência de exposição das mensagens de marketing e tem grande impacto sobre a atitude do consumidor. Este projeto tem como objetivo identificar se o patrocínio esportivo é capaz de modificar favoravelmente o aspecto afetivo da atitude em relação a uma marca, mesmo a partir de um cenário negativo sobre tal marca. Quanto ao método, utilizou-se um modelo experimental, medidas repetidas, com aplicação de questionário onde os participantes avaliavam, em escalas, afirmações após inserção de diferentes cenários relacionados a ações de patrocínio esportivo. Considerando as análises descritivas e estatísticas realizadas, em suma, o experimento proposto permitiu o entendimento de que o patrocínio esportivo é capaz de alterar positivamente a atitude de consumidores. Além disso, os resultados demonstram que estratégias macros de marketing esportivo são mais eficazes do que ações específicas para tal mudança. Desta maneira, observa-se que um planejamento de comunicação, integrando o futebol e outros esportes olímpicos, está propenso a criar um ambiente ideal para que os sentimentos positivos vinculados a natureza do esporte possam transpor a barreira de cenários negativos e ocasionar em atitudes favoráveis perante uma determinada empresa/marca.  

Using community-based participatory research and organizational diagnosis to characterize relationships between community leaders and academic researchers.

Science.gov (United States)

Wang, Karen H; Ray, Natasha J; Berg, David N; Greene, Ann T; Lucas, Georgina; Harris, Kenn; Carroll-Scott, Amy; Tinney, Barbara; Rosenthal, Marjorie S

2017-09-01

Sustaining collaborations between community-based organization leaders and academic researchers in community-engaged research (CEnR) in the service of decreasing health inequities necessitates understanding the collaborations from an inter-organizational perspective. We assessed the perspectives of community leaders and university-based researchers conducting community-engaged research in a medium-sized city with a history of community-university tension. Our research team, included experts in CEnR and organizational theory, used qualitative methods and purposeful, snowball sampling to recruit local participants and performed key informant interviews from July 2011-May 2012. A community-based researcher interviewed 11 community leaders, a university-based researcher interviewed 12 university-based researchers. We interviewed participants until we reached thematic saturation and performed analyses using the constant comparative method. Unifying themes characterizing community leaders and university-based researchers' relationships on the inter-organizational level include: 1) Both groups described that community-engaged university-based researchers are exceptions to typical university culture; 2) Both groups described that the interpersonal skills university-based researchers need for CEnR require a change in organizational culture and training; 3) Both groups described skepticism about the sustainability of a meaningful institutional commitment to community-engaged research 4) Both groups described the historical impact on research relationships of race, power, and privilege, but only community leaders described its persistent role and relevance in research relationships. Challenges to community-academic research partnerships include researcher interpersonal skills and different perceptions of the importance of organizational history. Solutions to improve research partnerships may include transforming university culture and community-university discussions on race

Interaction of multiple networks modulated by the working memory training based on real-time fMRI

Science.gov (United States)

Shen, Jiahui; Zhang, Gaoyan; Zhu, Chaozhe; Yao, Li; Zhao, Xiaojie

2015-03-01

Neuroimaging studies of working memory training have identified the alteration of brain activity as well as the regional interactions within the functional networks such as central executive network (CEN) and default mode network (DMN). However, how the interaction within and between these multiple networks is modulated by the training remains unclear. In this paper, we examined the interaction of three training-induced brain networks during working memory training based on real-time functional magnetic resonance imaging (rtfMRI). Thirty subjects assigned to the experimental and control group respectively participated in two times training separated by seven days. Three networks including silence network (SN), CEN and DMN were identified by the training data with the calculated function connections within each network. Structural equation modeling (SEM) approach was used to construct the directional connectivity patterns. The results showed that the causal influences from the percent signal changes of target ROI to the SN were positively changed in both two groups, as well as the causal influence from the SN to CEN was positively changed in experimental group but negatively changed in control group from the SN to DMN. Further correlation analysis of the changes in each network with the behavioral improvements showed that the changes in SN were stronger positively correlated with the behavioral improvement of letter memory task. These findings indicated that the SN was not only a switch between the target ROI and the other networks in the feedback training but also an essential factor to the behavioral improvement.

O fracasso escolar no cenário das patologias da contemporaneidade

Directory of Open Access Journals (Sweden)

Francisco Ramos de Farias

2007-01-01

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.

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

International Nuclear Information System (INIS)

Van den Berghe, S.; Leenaers, A.

2007-01-01

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 235 U) UAl 3 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 UAl 3 fuel with high-density, low enriched ( 235 U) 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 U 3 Si 2 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)

78 FR 4591 - Bank Secrecy Act Advisory Group; Solicitation of Application for Membership

Science.gov (United States)

2013-01-22

.... ACTION: Notice and request for nominations. SUMMARY: FinCEN is inviting the public to nominate financial... FURTHER INFORMATION CONTACT: Ina Boston, Senior Advisor, Office of Outreach, Regulatory Policy and... organization's participation on the BSAAG will bring value to the group Organizations may nominate themselves...

76 FR 40114 - Semiannual Agenda

Science.gov (United States)

2011-07-07

... abuses of terrorist financing, money laundering, and other financial crime. The proposed changes are... services posing lower risks of money laundering and terrorist financing from certain requirements. FinCEN... Money Services Businesses to include stored value or prepaid access. In this proposed rulemaking, we are...

Mechanics of Interrill Erosion with Wind-Driven Rain (WDR)

Science.gov (United States)

This article provides an evaluation analysis for the performance of the interrill component of the Water Erosion Prediction Project (WEPP) model for Wind-Driven Rain (WDR) events. The interrill delivery rates (Di) were collected in the wind tunnel rainfall simulator facility of the International Cen...

Sero-epidemiological study on Maedi-Visna in select- ed areas of ...

African Journals Online (AJOL)

survey in other areas is also required to have broad picture of the disease in the ... one of the most important diseases of respiratory system of sheep in the cen- .... observed were greatly enlarged weighing up to 4.5kg (two-three folds the nor-.

Sensitivity and specificity of the nickel spot (dimethylglyoxime) test

DEFF Research Database (Denmark)

Thyssen, Jacob P; Skare, Lizbet; Lundgren, Lennart

2010-01-01

The accuracy of the dimethylglyoxime (DMG) nickel spot test has been questioned because of false negative and positive test reactions. The EN 1811, a European standard reference method developed by the European Committee for Standardization (CEN), is fine-tuned to estimate nickel release around...

Laboratory evolution of a biotin-requiring Saccharomyces cerevisiae strain for full biotin prototrophy and identification of causal mutations

NARCIS (Netherlands)

Bracher, J.M.; de Hulster, A.F.; van den Broek, M.A.; Daran, J.G.; van Maris, A.J.A.; Pronk, J.T.

2017-01-01

Biotin prototrophy is a rare, incompletely understood, and industrially relevant characteristic of Saccharomyces cerevisiae strains. The genome of the haploid laboratory strain CEN.PK113-7D contains a full complement of biotin biosynthesis genes, but its growth in biotin-free synthetic medium is

Mud cloth from Mali: its making and use

African Journals Online (AJOL)

Owner

book covers and wrapping paper. ... used in mud cloth can be traced back to the 12th cen- tury AD ... cluded a bogolan wrap in his winter collection (Adire .... Stencils made from cardboard or plastic are also used. These stencilled cloths can be ...

STATUS OF WOOD PROCESSING AND STORAGE IN NIGERIA

African Journals Online (AJOL)

ES Obe

[5] Dry wood has good insulating prop- erties against heat, sound, and electricity. It tends to absorb and ... Wood is primarily com- posed of hollow, elongate, spindle-shaped cells ... (F), a small core of tissue located at the cen- tre of tree stems, ...

77 FR 33635 - Amendment to the Bank Secrecy Act Regulations-Requirement That Clerks of Court Report Certain...

Science.gov (United States)

2012-06-07

... business rule reflects that the definition of currency used therein is slightly different from the... Amendment to the Bank Secrecy Act Regulations--Requirement That Clerks of Court Report Certain Currency...: FinCEN is amending the rules relating to the reporting of certain currency transactions consistent...

Health Physics Measurements Services

International Nuclear Information System (INIS)

Carchon, R.

2001-01-01

SCK-CEN's programme on health physics measurements includes various activities in dosimetry, calibration , instrumentation , gamma-ray spectrometry, whole body counting , the preparation of standard sources, non-destructive assay and the maintenance of Euratom Fork detectors. Main achievements in these topical areas in 2000 are summarised

Safeguards and Physics Measurements: Neutron Activation Analysis with k0-standardisation

International Nuclear Information System (INIS)

Pomme, S.

2000-01-01

SCK-CEN's programme on Neutron Activation Analysis with k 0 -standardisation concentrates on the improvement of the standardisation method and the characterisation of the neutron field as well as on the improvement of the statistical control on neutron activation analysis. Main achievements in 2000 are reported

En ansats til en teori om Situationel Dialektisk Ledelse

DEFF Research Database (Denmark)

Dakwar, Julia Rytter; Lorentzen, Anne-Christine Rosfeldt; Smedegaard, Flemming

2015-01-01

typer af organisations-medlemmer, bl.a. Helle Heins arketypeteori, Thomas Højrups livsformsteori og Helle Petersens cen-lok teori om forandringskommunikation. I en ramme af et dialektisk mindset samles tankerne i artiklens afsluttende afsnit, hvor der skitseres en række krav, som ledelse og ledere i...

Neutron Activation Analysis with k0-standardisation

International Nuclear Information System (INIS)

Pomme, S.

2001-01-01

SCK-CEN's programme on Neutron Activation Analysis with k 0 -standardisation concentrates on the improvement of the standardisation method and the characterisation of the neutron field as well as on the improvement of the statistical control on neutron activation analysis. Main achievements in 2000 are reported

Health Physics Measurements Services

Energy Technology Data Exchange (ETDEWEB)

Carchon, R

2001-04-01

SCK-CEN's programme on health physics measurements includes various activities in dosimetry, calibration , instrumentation , gamma-ray spectrometry, whole body counting , the preparation of standard sources, non-destructive assay and the maintenance of Euratom Fork detectors. Main achievements in these topical areas in 2000 are summarised.

Non-linear DSGE Models and The Central Difference Kalman Filter

DEFF Research Database (Denmark)

Andreasen, Martin Møller

This paper introduces a Quasi Maximum Likelihood (QML) approach based on the Cen- tral Difference Kalman Filter (CDKF) to estimate non-linear DSGE models with potentially non-Gaussian shocks. We argue that this estimator can be expected to be consistent and asymptotically normal for DSGE models...

76 FR 72756 - Finding That the Islamic Republic of Iran Is a Jurisdiction of Primary Money Laundering Concern

Science.gov (United States)

2011-11-25

... Money Laundering Concern AGENCY: The Financial Crimes Enforcement Network (``FinCEN''), Treasury. ACTION... that the Islamic Republic of Iran is a jurisdiction of primary money laundering concern. DATES: The... PATRIOT Act''), Public Law 107-56. Title III of the USA PATRIOT Act amends the anti- money laundering...

2000 Scientific Report

Energy Technology Data Exchange (ETDEWEB)

NONE

2001-04-01

The report summarises the status and main achievements of various programmes at the Belgian Nuclear Research Centre SCK-CEN in the year 2000. The report is structured along four main fields of activity: Radioactive Waste and Clean-up, Reactor Safety, the BR2 Reactor and Radiation Protection.

2000 Scientific Report

International Nuclear Information System (INIS)

2001-04-01

The report summarises the status and main achievements of various programmes at the Belgian Nuclear Research Centre SCK-CEN in the year 2000. The report is structured along four main fields of activity: Radioactive Waste and Clean-up, Reactor Safety, the BR2 Reactor and Radiation Protection

Repeatability and reproducibility of in situ measurements of sound reflection and airborne sound insulation index of noise barriers

NARCIS (Netherlands)

Garai, M.; Schoen, E.; Behler, G.; Bragado, B.; Chudalla, M.; Conter, M.; Defrance, J.; Demizieux, P.; Glorieux, C.; Guidorzi, P.

2014-01-01

In Europe, in situ measurements of sound reflection and airborne sound insulation of noise barriers are usually done according to CEN/TS 1793-5. This method has been improved substantially during the EU funded QUIESST collaborative project. Within the same framework, an inter-laboratory test has

Sr90 determination in calcareous water

International Nuclear Information System (INIS)

Cohen, P.; Pardo, G.; Wormser, G.

1958-01-01

The Straub method (ref. 2) for determination of radioactive strontium in water containing calcium is valid within very wide limits, and particularly in the case of residual water from the chemical purification treatment of the radioactive liquid effluent at the C.E.N. Saclay. (author) [fr

System and scenario choices in the life cycle assessment of a building – changing impacts of the environmental profile

DEFF Research Database (Denmark)

Rasmussen, Freja; Birgisdóttir, Harpa; Birkved, Morten

2013-01-01

This paper presents a life cycle assessment (LCA) case study of an office building. The case study investigates how the setting of free parameters (adopted from the CEN/TC 350 standards) influences the results of the building’s LCA in the DGNB certification scheme for sustainable buildings...

DNA analysis of fecal bacteria to augment an epikarst dye trace study at Crump's Cave, Kentucky

Science.gov (United States)

A rainfall simulation experiment was performed to investigate the transport behavior of fecal-derived bacteria through shallow karst soils and through the epikarst. The experiment was conducted at Cave Springs Cavern located just south of Mammoth Cave National Park on the Sinkhole Plain of South Cen...

War Comes to Bala Morghab: A Tragedy of Policy and Action in Three Acts

Science.gov (United States)

2011-12-01

Police (ANP) members from that district, sends them to a regional training cen- ter for 8 weeks, and then reinserts them after graduation. The...econ- omy by contracting local truckers and laborers . Recognizing the road as the Achilles’ heel of the operation, the regional insurgent base eas

Fulltext PDF

Indian Academy of Sciences (India)

04 Glial Cens: The Other Cells of the Nervous System. aCIIIICl. Introduction. 94. An Introduction to Glial Cells. V Rajaraman. Wireless Telegraphic. Communication. Guglielmo Marconi. 53 at Marconi point on Cape Cod, USA. Medha S Raiadhyaksha and Yasmin Khan. GENERAL ARTICLES. 11 Splitting of Comets.

Army Communicator. Volume 35, Number 3, Fall 2010

Science.gov (United States)

2010-01-01

Malaysia ...Center. IT contractors were also an integral part of the task force design and specifically for completing the sizable DELL tech refresh contract...cost avoidance alone from completion of the DELL tech refresh project ahead of schedule and implementation of COOP and CEN- TRIX networks.

The architecture and fine structure of gill filaments in the brown ...

African Journals Online (AJOL)

The architecture and fine structure of gill filaments in the brown mussel, Perna perna. MA Gregory' ... exhibit many of the characteristics which are widely sought in sentinel ... tion surveys (Gardner, Connell, Eagle, Moldan, Oliff, Orren ..... From the undifferentiated cell/lateral cell interface to the cen- .... amorphous material.

The interplay between inner and outer frost damage and its implication for accelerated freeze-thaw testing

DEFF Research Database (Denmark)

Hasholt, Marianne Tange

2014-01-01

In the present project salt frost scaling was registered during an accelerated freeze-thaw test (CEN/TS 12390-9). After the test, inner damage was evaluated by observing the crack patterns on fluorescence impregnated plane sections. The results indicate that the developments of inner and outer...

75 FR 32839 - Submission for OMB Review; Comment Request

Science.gov (United States)

2010-06-09

... before July 9, 2010 to be assured of consideration. Financial Crimes Enforcement Network (FinCEN) OMB... impose a special measure against Banco Delta Asia as a financial institution of primary money laundering...: Businesses or other for-profits. Estimated Total Reporting Burden: 5,000 hours. Bureau Clearance Officer...

Formation of Toxic Iodinated Disinfection By-Products from Compounds Used in Medical Imaging

Science.gov (United States)

Iodinated X-ray contrast media (ICM) were investigated as a source of iodine in the formation of iodo-trihalomethane (iodo-THM) and iodo-acid disinfection byproducts (DBPs), both of which are highly genotoxic and/or cytotoxic in mammalian cells. ICM are widely used at medical cen...

76 FR 11327 - Technical Amendments to Rule 17a-8: Financial Recordkeeping and Reporting of Currency and Foreign...

Science.gov (United States)

2011-03-02

... Rule 17a-8: Financial Recordkeeping and Reporting of Currency and Foreign Transactions AGENCY... regulations of the Currency and Foreign Transactions Reporting Act of 1970, as amended (commonly referred to... administered by the Financial Crimes Enforcement Network (``FinCEN''), a bureau within the Department of the...

DNA Topoisomerase I Gene Copy Number and mRNA Expression Assessed as Predictive Biomarkers for Adjuvant Irinotecan in Stage II/III Colon Cancer

DEFF Research Database (Denmark)

Nygård, Sune Boris; Vainer, Ben; Nielsen, Signe L

2016-01-01

FISH and follow-up data were obtained from 534 patients. TOP1 gain was identified in 27 % using a single-probe enumeration strategy (≥ 4 TOP1 signals per cell), and in 31 % when defined by a TOP1/CEN20 ratio ≥ 1.5. The effect of additional irinotecan was not dependent on TOP1 FISH status. TOP1 m......PURPOSE: Prospective-retrospective assessment of the TOP1 gene copy number and TOP1 mRNA expression as predictive biomarkers for adjuvant irinotecan in stage II/III colon cancer (CC). EXPERIMENTAL DESIGN: Formalin-fixed, paraffin-embedded tissue microarrays were obtained from an adjuvant CC trial...... (PETACC3) where patients were randomized to 5-fluorouracil/folinic acid with or without additional irinotecan. TOP1 copy number status was analyzed by fluorescence in situ hybridization (FISH) using a TOP1/CEN20 dual-probe combination. TOP1 mRNA data were available from previous analyses. RESULTS: TOP1...

De cidades e sociedades: estética, contextos e as tendências na representação urbana e da periferia em videoclipes da América Latina

Directory of Open Access Journals (Sweden)

Victória Costa

2017-12-01

Full Text Available Neste ensaio analisamos e discutimos a relação entre a experiência dos indivíduos e ruas, bairros e cidades, especialmente de áreas consideradas de periferia, que são apresentadas/ representadas em videoclipes de intérpretes e grupos latinos a partir dos anos 2000. Por meio da observação e análise de tais obras – e de outras que aqui são apenas citadas – propomos a divisão em cinco categorias: “Pertencimento”; “Cenários”; “Espaço como produto”; “Luta e denúncia” e “Simbiose”, entre pertencimento e cenários. Tais aspectos comunicariam uma possível tendência em videoclipes e os diálogos entre cidades e sociedades na produção audiovisual contemporânea na América Latina.  Palavras-chave: Cidades. Periferia. Videoclipes. Audiovisual. América Latina.

Waste package characterisation

Energy Technology Data Exchange (ETDEWEB)

Sannen, L.; Bruggeman, M.; Wannijn, J.P

1998-09-01

Radioactive wastes originating from the hot labs of the Belgian Nuclear Research Centre SCK-CEN contain a wide variety of radiotoxic substances. The accurate characterisation of the short- and long-term radiotoxic components is extremely difficult but required in view of geological disposal. This paper describes the methodology which was developed and adopted to characterise the high- and medium-level waste packages at the SCK-CEN hot laboratories. The proposed method is based on the estimation of the fuel inventory evacuated in a particular waste package; a calculation of the relative fission product contribution on the fuel fabrication and irradiation footing; a comparison of the calculated, as expected, dose rate and the real measured dose rate of the waste package. To cope with the daily practice an appropriate fuel inventory estimation route, a user friendly computer programme for fission product and corresponding dose rate calculation, and a simple dose rate measurement method have been developed and implemented.

Waste package characterisation

International Nuclear Information System (INIS)

Sannen, L.; Bruggeman, M.; Wannijn, J.P.

1998-09-01

Radioactive wastes originating from the hot labs of the Belgian Nuclear Research Centre SCK-CEN contain a wide variety of radiotoxic substances. The accurate characterisation of the short- and long-term radiotoxic components is extremely difficult but required in view of geological disposal. This paper describes the methodology which was developed and adopted to characterise the high- and medium-level waste packages at the SCK-CEN hot laboratories. The proposed method is based on the estimation of the fuel inventory evacuated in a particular waste package; a calculation of the relative fission product contribution on the fuel fabrication and irradiation footing; a comparison of the calculated, as expected, dose rate and the real measured dose rate of the waste package. To cope with the daily practice an appropriate fuel inventory estimation route, a user friendly computer programme for fission product and corresponding dose rate calculation, and a simple dose rate measurement method have been developed and implemented

Radiation Protection: Introduction

International Nuclear Information System (INIS)

Loos, M.

2007-01-01

As a federal research Centre, SCK-CEN has the statutory assignment to give priority to research related to safety, radioactive waste management, protection of man and environment, management of fissile and other strategic materials and social implications as part of the pursuit of sustainable development and to develop and gather the necessary knowledge and spread this knowledge through formation and communication. At the Division of Radiation Protection at SCK-CEN we are therefore active to maintain and enhance knowledge and expertise in each aspect of radiation protection: we study the risk of exposure - the way that radioactive materials spread in the environment and the potential for human contact - and the risk from exposure - how radiation affects human health; we perform health physics measurements; we are involved in emergency planning and preparedness and support to risk governance and decision taking. These activities are supported by radiation specific analysis and measurement techniques. These activities are not performed in isolation but in context of national and international collaborations or demands

Long-term studies with the Ariel 5 ASM. I - Hercules X-1, Vela X-1, and Centaurus X-3

Science.gov (United States)

Holt, S. S.; Kaluzienski, L. J.; Boldt, E. A.; Serlemitsos, P. A.

1979-01-01

Twelve hundred days of 3-6 keV X-ray data from Her X-1, Vela X-1, and Cen X-3 accumulated with the Ariel 5 All-Sky Monitor are interrogated. The binary periodicities of all three can be clearly observed, as can the 35 day variation of Her X-1, for which we can refine the period to 34.875 plus or minus 0.030 days. No such longer-term periodicity less than 200 days is observed from Vela X-1. The 26.6 days low-state recurrence period for Cen X-3 is not observed, but a 43.0 day candidate periodicity is found which may be consistent with the precession of an accretion disk in that system. The present results are illustrative of the long-term studies which can be performed on approximately 50 sources over a temporal base which will ultimately extend to at least 1800 days.

Conclusion of the commission for determining wear out of Avala heavy water pump bearings - Annex 1; Prilog1 - Zakljucak komisije za utvrdjivanje istrosenosti lezista teskovodne pumpe Avala

Energy Technology Data Exchange (ETDEWEB)

Nikolic, M; Bratic, A; Zaric, Z; Vidmar, M; Kirilin, J [Institute of Nuclear Sciences Boris Kidric, Vinca, Beograd (Serbia and Montenegro)

1963-12-15

After dismantling of the CEN-132 pump the findings of the Commission were: the wear-out of the surfaces of the pump bearings and one disc caused appearance of about 39 grams of cobalt in the heavy water system of the reactor. This report includes: results of chemical analysis of stellite taken form pump disc, results of measuring the wear-out of the upper pump bearing, drawing of the worn-out disc and upper cladding of the pump, and a photo of the upper surface of the disc. [Serbo-Croat] Posle demontaze pumpe CEN-132, pregleda detalja i izvrsenih merenja komisija je konstatovala da je zbog istrosenosti lezista diska pumpe i istrosenosti gornje caure u teskovodni sistem dospelo ukupno 39 grama kobalta. Ovaj dokument sadrzi i rezultate hemijske analize stelita skinutog sa diska pumpe, rezultate merenja istrosenosti gornjeg lezista teskovodne pumpe, crteze istrosnog diska skinutog sa pumpe, crteze gornje caure, fotografiju gornje povrsine diska.

Leachability of heavy metals in geopolymer-based materials synthesized from red mud and rice husk ash

Science.gov (United States)

Nguyen, Hoc Thang; Pham, Vo Thi Ha Quyen; Dang, Thanh Phong; Dao, Thanh Khe

2018-04-01

Red mud is an industrial waste generated during aluminum production from bauxite whereas rice husk ash is an agricultural waste from burning of rice husk that could cause negative impact on the environment if not properly managed. This study demonstrates the utilization of red mud in combination with rice husk ash to form a geopolymer-based material which can be used as bricks or replacement for traditional cement materials. The focus of this study is on the leachability of heavy metals in the raw materials and the geopolymer as this would be significant in assessing the environmental impact of the product. Leachability of metals such as Cu, Zn, Cd, Pb, Fe, and Cr was evaluated based on European (EN 124572-2 EU CEN TC292/ CEN TC 308) standard with pH value 7. Results indicate that the leachability of these metals in the geopolymer matrix is lower than that of the raw materials.

The undergratuate degree in nursing and the meanings derived from the mentoring

Directory of Open Access Journals (Sweden)

Carmen Maria dos Santos Lopes M. Dantas da Silva

2015-01-01

Full Text Available Objetivos: Analisar os significados produzidos nos desenhos livres e construídos pelos estudantes na tutoria enquanto cenário de aprendizagem no curso de graduação. Método: Estudo de pesquisa qualitativa. O cenário uma faculdade privada do Rio de Janeiro. Os sujeitos 87 estudantes, do 1º ao 7º períodos de enfermagem. Os procedimentos ético-legais estiveram presentes e a autorização do Comitê de Ética em Pesquisa-protocolo n.º 581-11. Resultados: A análise dos dados coletados contemplou a análise temática. Da leitura dos desenhos obtivemos a compreensão de que os estudantes valorizam a tutoria, ao terem que construir a aprendizagem com base na responsabilidade. Conclusão: O estudo se propõe a incentivar os estudantes e professores na consecução da melhor qualidade na formação.

Água virtual, escassez e gestão: o Brasil como grande "exportador" de água Virtual water, scarcity and management: Brazil as a large water exporter

Directory of Open Access Journals (Sweden)

Roberto Luiz do Carmo

2007-12-01

Full Text Available Recentemente, a valoração econômica da água tem sido discutida no cenário político brasileiro. Faz parte dessa discussão a incorporação da água nos produtos que circulam no mercado, especialmente através de commodities, utilizando o conceito de "água virtual". Este trabalho avalia o impacto da utilização do conceito de água virtual no cenário brasileiro, ao mesmo tempo em que discute as decorrências dessa exportação.The economic valuation of water has recently been discussed in the Brazilian political scenario. Incorporation of water in trade and commerce, especially in commodities is part of the proposed discussion , using the "virtual water" concept. In this article we search for the impact that the utilization of the "virtual water" concept may have in the Brazilian scenario and discuss, at the same time, the consequences of this exportation.

The ATCA CABB Line Survey on Centaurus A: Properties of the Molecular Gas from the Dust Lanes to the Central Engine

Science.gov (United States)

Ott, Juergen; Koribalski, Baerbel; Henkel, Christian; Edwards, Philip; Norris, Ray; Meier, David; Feain, Ilana; Curran, Steve; Martin-Pintado, Jesus; Beelen, Alexandre; Aalto, Susanne; Combes, Francoise; Israel, Frank; Muller, Sebastien; Espada, Daniel; Guelin, Michel; Black, John Harry; V-Trung, Dinh; Impellizzeri, Caterina M. V.; Persson, Carina

2011-10-01

Centaurus A with its host NGC5128 is the most nearby radio galaxy. Its molecular spectrum exhibits three prominent features: a) gas that is located in the outer disk and dust lanes, b) absorption lines that are supposedly close to the central AGN, and c) gas in emission from the nucleus. We propose to perform an extensive line survey toward CenA using the exciting new capabilities of CABB. The broad basebands and narrow zoom bands of CABB are ideal to capture the full breath of the CenA spectral features. Our multi-band line observations will allow us to derive the exact physical conditions of each component as well as the chemistry involved. We will therefore obtain a comprehensive view of the physics imprinted on the molecular spectrum of a radio galaxy and its host, reaching from the central supermassive black hole, through the accretion region and the inner disk to the outer dust lanes.

Waste and Disposal: Demonstration

International Nuclear Information System (INIS)

Neerdael, B.; Buyens, M.; De Bruyn, D.; Volckaert, G.

2002-01-01

Within the Belgian R and D programme on geological disposal, demonstration experiments have become increasingly important. In this contribution to the scientific report 2001, an overview is given of SCK-CEN's activities and achievements in the field of large-scale demonstration experiments. In 2001, main emphasis was on the PRACLAY project, which is a large-scale experiment to demonstrate the construction and the operation of a gallery for the disposal of HLW in a clay formation. The PRACLAY experiment will contribute to enhance understanding of water flow and mass transport in dense clay-based materials as well as to improve the design of the reference disposal concept. In the context of PRACLAY, a surface experiment (OPHELIE) has been developed to prepare and to complement PRACLAY-related experimental work in the HADES Underground Research Laboratory. In 2001, efforts were focussed on the operation of the OPHELIE mock-up. SCK-CEN also contributed to the SELFRAC roject which studies the self-healing of fractures in a clay formation

Update on NOx measuring methods and emission levels

International Nuclear Information System (INIS)

Yamada, N.; Desprets, M.

1997-01-01

The survey was carried out in 1995 to update the NO x report prepared for presentation at the 19th World Gas Conference held in Milan in 1994 and drawn out on the basis of the information obtained through the survey carried out in 1992. Over the past three years the work on standard developments and/or improvements on NO x emissions has progressed in several IGU member countries. For example, in Europe a report on 'Determination of emissions from appliances burning gaseous fuels during type-testing' was drafted by European Committee for Standardization (CEN) in March 1994 as 'CR 1404 : 1994'. This report is based on the work so far carried out within MARCOGAZ, and it is expected that the NO x measuring methods specified in this report would be finally introduced into relevant gas appliance standards issued by CEN for type-testing of gas appliances covered by this report. (au)

Optoelectronics Research Center

Science.gov (United States)

1992-05-16

and the laser line-width increases by The parameter y represents the cavity several orders of magnitude. loss rate, and the carrier life time is given...lsetai bhvonadiceaefrbrab. overlap with gain (gauni effect), wild (3) intier- Uiversity of New Mexico, CenIerfr High ai5 element losse. As expected