7,168 research outputs found
Open access self-archiving: An author study
No full textThis, our second author international, cross-disciplinary study on open access had 1296 respondents. Its focus was on self-archiving. Almost half (49%) of the respondent population have self-archived at least one article during the last three years. Use of institutional repositories for this purpose has doubled and usage has increased by almost 60% for subject-based repositories. Self-archiving activity is greatest amongst those who publish the largest number of papers. There is still a substantial proportion of authors unaware of the possibility of providing open access to their work by self-archiving. Of the authors who have not yet self-archived any articles, 71% remain unaware of the option. With 49% of the author population having self-archived in some way, this means that 36% of the total author population (71% of the remaining 51%), has not yet been appraised of this way of providing open access. Authors have frequently expressed reluctance to self-archive because of the perceived time required and possible technical difficulties in carrying out this activity, yet findings here show that only 20% of authors found some degree of difficulty with the first act of depositing an article in a repository, and that this dropped to 9% for subsequent deposits. Another author worry is about infringing agreed copyright agreements with publishers, yet only 10% of authors currently know of the SHERPA/RoMEO list of publisher permissions policies with respect to self-archiving, where clear guidance as to what a publisher permits is provided. Where it is not known if permission is required, however, authors are not seeking it and are self-archiving without it. Communicating their results to peers remains the primary reason for scholars publishing their work; in other words,
researchers publish to have an impact on their field. The vast majority of authors (81%) would willingly comply with a mandate from their employer or research funder to deposit copies of their articles in an institutional or subject-based repository. A further 13% would comply reluctantly; 5% would not comply with such a mandate
Progress of international hydrogen production network for the thermochemical Cu–Cl cycle
No full textThis paper presents recent advances by an international team which is developing the thermochemical copper–chlorine (Cu–Cl) cycle for hydrogen production. Development of the Cu–Cl cycle has been pursued by several countries within the framework of the Generation IV International Forum (GIF) for hydrogen production with the next generation of nuclear reactors. Due to its lower temperature requirements in comparison with other thermochemical cycles, the Cu–Cl cycle is particularly well matched with Canada's Generation IV reactor, SCWR (Super-Critical Water Reactor), as well as other heat sources such as solar energy or industrial waste heat. In this paper, recent developments of the Cu–Cl cycle are presented, specifically involving unit operation experiments, corrosion resistant materials and system integration.Atomic Energy of Canada LimitedOntario Research Excellence FundNatural Sciences and Engineering Research Council of CanadaUniversity Network of Excellence in Nuclear Engineering (UNENE)Canada Research Chairs progra
ŻYCIE UKRYTE W SŁOWIE. "BEKSIŃSCY. PORTRET PODWÓJNY" MAGDALENY GRZEBIAŁKOWSKIEJ W ŚWIETLE POSTSTRUKTURALIZMU
No full textLife Hidden in Words. Magdalena Grzebiałkowska\u27s "Beksińscy. Portret podwójny" and Poststructuralism
The article analyzes Magdalena Grzebiałkowska\u27s biographical "Beksińscy. Portret podwójny" which focuses on the lives of Zdzisław Beksiński and Tomasz Beksiński. The author looks at the construction of the biography and its relationship to poststructuralism, which allows for an appreciation of the literary features of the book. He points to how the specificity of the content, language, a mode of narration in Grzebiałkowska\u27s book make it a full-fledged literary work itself. As such the book departs from a typical biographical scheme. Juxtaposing the book with poststructural ideas leads to the reconsideration of the role of the author in the process of shaping of a biographical narrative
Atractus potschi Fernandes 1995
No full textAtractus potschi Fernandes, 1995 Figs. 8C, 13A Atractus potschi Fernandes, 1995; J. Herpetol. 29:417. Holotype: Adult male, IBSP 48438, collected on 19 July 1985 by A. J. Santos, municipality of Maceió (09º40’S, 35º43’W, sea level), state of Alagoas, Brazil, (specimen examined). Paratypes: Eleven specimens all from state of Sergipe: adult female (MZUSP 7196) and adult males (MZUSP 7001, 7165, 7197) collected on 29 April 1978 by E. M. X. Freire; adult males (MZUSP 7275–76, 7278, 7280–81) and females (MZUSP 7277, 7279) collected between September and November 1978 by E. M. X. Freire, all from municipality of Salgado (11º02’S, 37º28’W, ca. 150 m). Diagnosis: Atractus potschi is distinguished from all congeners by the combination of the following characters: (1) 15/15/15, smooth dorsal scale rows; (2) two postoculars; (3) loreal long; (4) temporals 1+2; (5) seven supralabials, third and fourth contacting orbit; (6) seven infralabials, first four contacting chinshields; (7) seven maxillary teeth; (8) three gular scale rows; (9) three preventrals; (10) 153–165 ventrals in females, 141–150 in males; (11) 22–25 subcaudals in females, 27–32 in males; (12) dorsal ground colour creamish yellow, with black collar and black dots, occasionally merged to form blotches or crossbands; (13) venter immaculate creamish white; (14) moderate body size, females reaching 370 mm SVL, males 312 mm SVL; (15) tail short in females (8.6–11.4% SVL) and short to moderate (8.8–15.6% SVL) in males; (16) slightly bilobed, semicapitate, and semicalyculate hemipenis. Comparisons: Among all congeners, A. potschi shares 15 dorsal scale rows, seven or eight maxillary teeth, dorsal colour pattern creamish yellow or beige with black spots or blotches, and venter predominantly creamish white only with A. insipidus and A. punctiventris. Atractus potschi differs from A. insipidus by having a black collar, dorsal blotches forming thin crossbands, two postdiastemal teeth, and retracted hemipenis as long as 10 subcaudal scales (vs. black collar absent, dorsal colour pattern uniformly scattered with small black dots, single postdiastemal teeth, retracted hemipenis six subcaudal scales long); from A. punctiventris by having venter immaculate, creamish white (vs. venter with round dark brown blotches on the middle of ventrals, forming a conspicuous median stripe). Description: Head twice longer than wide, slightly arched in lateral view, sub-triangular in dorsal view; snout truncate in lateral view, round in dorsal view; cervical constriction indistinct; rostral wider than high, sub-triangular in frontal view, poorly visible in dorsal view; internasal as long as wide; internasal suture sinistral with respect to prefrontal suture; prefrontal as long as wide; supraocular sub-trapezoidal, twice as long as wide; frontal sub-pentagonal or sub-triangular, broader than long; parietal twice as long as wide; nasal divided; nostril located between prenasal and postnasal; prenasal and postnasal twice as high as long; loreal moderate, contacting second and third supralabials; pupil round; generally two postoculars of similar size; upper postocular occasionally slightly longer than lower and lower postocular higher than upper; temporals 1+2; anterior temporal twice as long as high; upper posterior temporal elongate, three times longer than wide; seven supralabials, third and fourth contacting orbit; second supralabial higher than first and smaller than third; sixth higher and seventh longer than remaining supralabials; symphisial sub-triangular, twice as broad as long; seven infralabials, first four contacting chinshields; first pair of infralabials in contact behind symphisial, preventing symphisial/chinshields contact; chinshields twice as long as wide; three gular scale rows; generally three preventrals; 15/15/15 smooth dorsal scale rows; dorsals lacking apical pits, supra-anal tubercles, and keels; caudal spine moderate, conical, robust, and acuminate. Maxillary arch: Arched in dorsal view, with five or six prediastemal and two postdiastemal teeth; prediastemal teeth large, moderately spaced, curved and decreasing gradually in size posteriorly, angular in cross section, robust at base, and narrower on the apices; maxillary diastema moderate; postdiastemal teeth slightly smaller than last prediastemal tooth; lateral process moderately developed, lacking posterior projection. Colour in preservative: Dorsum of head brown to the middle of parietals; posterior region of parietals and temporal area creamish yellow; background of head brown to dorsal edges of supralabials; supralabials, except for dorsal margins, uniformly creamish yellow; mental region immaculate creamish white; venter and tail immaculate creamish white; dorsum of body with a black collar at neck on the third to sixth dorsal scale rows; region between end of parietals and black collar creamish yellow; occasionally there is a second black collar (three scales long) separated from the first by four creamish yellow scale rows; dorsal ground colour creamish yellow, uniformly scattered with small black dots (one scale wide/long); dots frequently arranged transversally, forming tiny (one scale wide) dorsal crossbands; bands extending above flanks to the level of fourth dorsal scale rows; bands occasionally constituting broad transversal blotches (one to three scales long), with size similar to interspaces anteriorly and decreasing posteriorly; first dorsal scale rows creamish white, second with small black dots (half scale wide) covering pale interspaces; dorsal dots or spots rarely merged, and arranged linearly along body (Fig. 8C). Juvenile colouration in preservative: Juveniles and sub-adults with dorsal ground colour creamish yellow with narrow black dots (one scale long) usually merged into tiny crossbands. Colour in life: Dorsum of head uniform brown to the level of anterior region of parietals; posterior portion of parietals and occipitals beige, forming a pale band; wide collar black; supralabials creamish yellow, except for brown dorsal margins of third and fourth scales; infralabials and mental region creamish yellow; venter and tail creamish yellow; dorsal ground colour of body reddish, uniformly scattered with small black dots (Fig. 13A). Hemipenis morphology (everted organ, n = 1): Retracted organ bifurcates and extends to the level of seventh subcaudals. Organ slightly bilobed, semicapitate, and semicalyculate; lobes poorly distinct, restricted to distal portion of capitulum; lobes sub-cilyndrical with round apices, and smaller than remaining capitulum; lobes and capitulum uniformly covered with spinulate calyces; capitulum located just above sulcus spermaticus bifurcation; capitular groove poorly distinct on sulcate and well marked on the asulcate side of hemipenis; capitulum longer than hemipenial body on both sides of organ; sulcus spermaticus divides on basal third of hemipenial body; sulcus spermaticus branches with centrifugal orientation, running to tips of lobes; margins of sulcus spermaticus stout and moderately broad, bordered with spinules from the base to the end of lobes; hemipenial body sub-cylindrical as broad as capitulum, covered with moderate hooked spines; naked pocket absent; basal portion of hemipenial body with longitudinal plicae and diffuse spinules (Fig. 6D). Variation: Largest male 312 mm SVL, 46 mm CL, largest female 370 mm SVL, 38 mm CL; tail 8.8– 15.6% (x¯ = 13.1; SD = 2.2; n = 11) SVL in males, 8.6–11.4% (x¯ = 10.2; SD = 1; n = 7) SVL in females; 141– 150 (x¯ = 145.3; SD = 3.7; n = 11) ventrals in males, 153–165 (x¯ = 157.7; SD = 4.9; n = 7) in females; 27–32 (x¯ = 29.4; SD = 1.5; n = 11) subcaudals in males, 22–25 (x¯ = 22.3; SD = 0.9; n = 7) in females; 7 (n = 35 sides) or 8 (n = 1 side) supralabials; 4 (n = 35 sides) or 5 (n = 1 side) infralabials contacting chinshields; 2 (n = 1), 3 (n = 4) or 4 (n = 1) preventrals; 8–10 (x¯ = 8.5; SD = 0.5; n = 12 sides) dorsal scale rows level with second subcaudal; 7 (n = 14 sides) or 8 (n = 4 sides) maxillary teeth; retracted hemipenis extends to level of 10 th subcaudal (n = 3). Distribution: Northeastern Brazil, from São Cristovão (11º01’S, 37º12’W) in the state of Sergipe southwestward to Poções (14º32’S, 40º22’W) in the state of Bahia. Atractus potschi inhabits rainforest reminds in transitional areas amongst Lowland to Lower Montane Semi-deciduous Forest between 0–800 m elevation (Fig. 4). Remarks: Fernandes (1995) described A. potschi on the basis of 12 specimens from the states of Alagoas and Sergipe, Brazil. Lima et al. (2000) extended species distribution southern to Feira de Santana, in the state of Bahia. We report herein nine additional specimens of A. potschi, extending the species range of distribution for five new localities on northeastern Brazil (see Fig. 4).Published as part of Passos, Paulo, Fernandes, Ronaldo, Bérnils, Renato S. & De Moura-Leite, Julio C., 2010, Taxonomic revision of the Brazilian Atlantic Forest Atractus (Reptilia: Serpentes: Dipsadidae) 2364, pp. 1-63 in Zootaxa 2364 (1) on pages 30-32, DOI: 10.11646/zootaxa.2364.1.1, http://zenodo.org/record/531550
Systems, methods and devices for the capture and hydrogenation of carbon dioxide with thermochemical Cu—Cl and Mg—Cl—Na/K—CO2 cycles
No full textSystems, methods, and devices for producing hydrogen and capturing CO2 from emissions combine both H2 production and CO2 capture processes in forms of thermochemical cycles to produce useful products from captured CO2. The thermochemical cycles are copper-chlorine (Cu—Cl) and magnesium-chlorine-sodium/potassium cycles (Mg—Cl—Na/K—CO2). One system comprises a Cu—Cl cycle, a CO2 capture loop, and a hydrogenation cycle. Another system comprises an Mg—Cl—Na/K—CO2 cycle and a hydrogenation cycle. Devices for hydrogen production, CO2 capture, hydrogenation, and process and equipment integration include a two-stage fluidized/packed bed, hybrid two-stage spray-fluidized/packed bed reactor, a two-stage wet-mode absorber, a hybrid two-stage absorber, and a catalyst packed/fluidized bed reactor
Uma ferramenta de apoio ao processo de aprendizagem de algoritmos
No full textDissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico. Programa de Pós-graduação em Ciência da Computaçã
Clean hydrogen production with the Cu–Cl cycle – Progress of international consortium, I: Experimental unit operations
No full textAdvancement of the thermochemical copper–chlorine (Cu–Cl) cycle for hydrogen production is reviewed and discussed in this paper. Individual unit operations and their linkage into an integrated cycle are being developed by a Canadian consortium, as part of the Generation IV International Forum (GIF) for hydrogen production with the next generation of nuclear reactors. This paper focuses on the consortium’s latest advances on the Cu–Cl cycle, particularly with respect to hydrogen production with Canada’s Generation IV reactor, called SCWR (Super-Critical Water Reactor). Other heat sources may also be utilized for the Cu–Cl cycle, such as solar energy or industrial waste heat. In this first of two companion papers, recent developments in Canada’s nuclear hydrogen program are reported, specifically unit operation experiments of the Cu–Cl cycle and system integration. The following second companion paper will present system modeling with Aspen Plus, corrosion resistant materials, thermochemistry, safety, and reliability aspects of the Cu–Cl cycle.Atomic Energy of Canada LimitedOntario Research Excellence FundNatural Sciences and Engineering Research Council of CanadaUniversity Network of Excellence in Nuclear Engineering (UNENE)Canada Research Chairs progra
Forma??o continuada com professores alfabetizadores : possibilidades da a??o supervisora
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Previous issue date: 2012-12-20This study mainly aims to comprehend how has been done the school supervisor work in the continued literacy teachers training, in the sense of analyzing and understanding what have been experienced in these times of State's role reconfiguration and of the educational policies' implementation regarding the literacy processes. In order to achieve this objective, some procedures of the qualitative researches had been used based on the principles of an ethnographic case study, such as continuous monitoring, bibliographical analysis and documents of the school, mapping of the current education legislation and semi-structured interviews involving school supervision and teachers who work in the first years of elementary school from a public school in Gravatai's municipal school system, metropolitan region of Porto Alegre, Rio Grande do Sul. The data were analyzed from the Triangulation presuppositions and principles of the content analysis.
The study is in the light of Paulo Freire, Magda Soares, Maria do Ros?rio Mortatti, Stephen J. Ball, Marli Andr?, Marcelo Garcia, Ant?nio N?voa, Isabel Alarc?o, Mary Rangel and Cleoni Maria Barboza Fernandes' contributions, amongst others, with the intention of establishing the dialogue with the evidences and construct knowledge that makes possible the understanding of the educational processes in the school context and the action of the professionals at the local level. The results of the research demonstrate the necessity of understanding of the school supervisor work in a complex context of State's role reconfiguration, defied to overcome limits during literacy teachers training that takes into consideration the work specificities in the first years of elementary school, as well as the necessity of a discussion of all educational system to ensure students and teachers the right to education.O presente estudo tem como objetivo central compreender como est? sendo a atua??o do supervisor na forma??o continuada com professores alfabetizadores no sentido de analisar e entender o que se tem vivido nesses tempos de reconfigura??o do papel do Estado e da implementa??o de pol?ticas educacionais voltadas aos processos de alfabetiza??o. Para atender ao objetivo proposto, foram utilizados procedimentos das pesquisas qualitativas, fundamentada nos princ?pios de estudo de caso do tipo etnogr?fico, com a realiza??o de observa??o cont?nua, an?lise bibliogr?fica e de documentos da escola, mapeamento da legisla??o educacional vigente e realiza??o de entrevistas semiestruturadas envolvendo a supervis?o e professores que atuam nos Anos Iniciais do Ensino Fundamental de uma escola p?blica na Rede Municipal de Ensino de Gravata?, Regi?o Metropolitana de Porto Alegre, Rio Grande do Sul.
Os dados foram analisados a partir dos pressupostos da Triangula??o e princ?pios da an?lise de conte?do. O estudo encontra-se ancorado nas contribui??es de Paulo Freire, Magda Soares, Maria do Ros?rio Mortatti, Stephen J. Ball, Marli Andr?, Marcelo Garcia, Ant?nio N?voa, Isabel Alarc?o, Mary Rangel e Cleoni Maria Barboza Fernandes, dentre outros, na intencionalidade de estabelecer o di?logo com as evid?ncias e construir conhecimento que possibilite a compreens?o dos processos educacionais no ?mbito da escola e da a??o dos profissionais em n?vel local. Os resultados da pesquisa apontam para a necessidade de compreens?o da a??o supervisora num contexto complexo de reconfigura??o do papel do Estado, desafiada a superar limites vivenciados na forma??o com professores alfabetizadores que trate das especificidades do trabalho nos Anos Iniciais do Ensino Fundamental, bem como a necessidade da articula??o de todo o Sistema de Ensino para a garantia do direito ? educa??o de alunos e professores
Canada’s program on nuclear hydrogen production and the thermochemical Cu–Cl cycle
No full textThis paper presents an overview of the status of Canada’s program on nuclear hydrogen production and the thermochemical copper–chlorine (Cu–Cl) cycle. Enabling technologies for the Cu–Cl cycle are being developed by a Canadian consortium, as part of the Generation IV International Forum (GIF) for hydrogen production with the next generation of nuclear reactors. Particular emphasis in this paper is given to hydrogen production with Canada’s Super-Critical Water Reactor, SCWR. Recent advances towards an integrated lab-scale Cu–Cl cycle are discussed, including experimentation, modeling, simulation, advanced materials, thermochemistry, safety, reliability and economics. In addition, electrolysis during off-peak hours, and the processes of integrating hydrogen plants with Canada’s nuclear plants are presented.Atomic Energy of Canada LimitedOntario Research Excellence FundArgonne National Laboratory (International Nuclear Energy Research Initiative; U.S. Department of Energy)Natural Sciences and Engineering Research Council of Canada (NSERC)University Network of Excellence in Nuclear Engineering (UNENE)Canada Research Chairs (CRC
FIGURE 4 in A new species of the colubrid snake genus Atractus (Reptilia: Serpentes) from the central Amazon of Brazil
No full textFIGURE 4. Dorsal view of the holotype of Atractus altagratiae sp. nov. (MNRJ 7888). SVL 240 mm, CL 35 mm.Published as part of <i>Passos, Paulo & Fernandes, Ronaldo, 2008, A new species of the colubrid snake genus Atractus (Reptilia: Serpentes) from the central Amazon of Brazil, pp. 59-66 in Zootaxa 1849 (1)</i> on page 61, DOI: 10.11646/zootaxa.1849.1.4, <a href="http://zenodo.org/record/10089462">http://zenodo.org/record/10089462</a>
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