bluuebunny/crossref_metadata_2025_split huggingface dataset:
La grotte de Saint-Marcel (Ardèche) : un référentiel pour l'évolution des endokarsts méditerranéens depuis 6 Ma
Authors: Mocochain Ludovic , Bigot Jean-Yves , Clauzon Georges , Faverjon Marc , Brunet Philippe 
Published: November 2018

Le plateau de Saint-Remèze est formé d'une plate-forme carbonatée d'âge mésozoïque qui borde la moyenne vallée du Rhône. Cette plate-forme est intensément karstifiée, comme l'atteste la grotte de Saint-Marcel dont le développement dépasse 53 km. La grotte de Saint-Marcel présente un étagement des réseaux sur plusieurs niveaux. Deux de ces niveaux (intermédiaire et supérieur) présentent des conduits dont une grande partie est abandonnée par les écoulements, ils présentent de grandes sections de conduits qui se développent horizontalement sur plusieurs kilomètres. Le troisième niveau (inférieur) est actif et partiellement noyé, il a été reconnu en plongée jusqu'à 65 m sous le niveau de l'Ardèche. L'étagement des niveaux horizontaux n'a aucun lien avec la structure géologique qui est recoupée sans distinction. Cette observation permet de saisir le rôle structurant du niveau de base et de prendre en compte son évolution dans la formation du karst ardéchois.
Dans le périmètre des gorges de l'Ardèche et de la moyenne vallée du Rhône, l'investigation des niveaux repères générés par la crise de salinité messinienne permet une restitution de l'évolution du niveau de base régional. Cette restitution de l'évolution des niveaux a permis d'étudier la grotte de Saint-Marcel dans un cadre géodynamique et chronologique d'une durée de six millions d'années. Couplées aux variations du niveau de base, les investigations morphologiques menées dans la grotte ont restitué trois grandes phases de spéléogenèse et deux grands modes de circulation des eaux souterraines. Il s'agit en premier lieu de la structuration en profondeur du drainage du plateau de Saint-Remèze lors du creusement des canyons messiniens durant la crise de salinité. Au lendemain de la crise, à 5,32 Ma, la transgression pliocène a provoqué une brusque remontée du niveau de base produisant un refoulement hydrologique aux exutoires du karst messinien. La résistance hydraulique a déclenché le creusement per ascensum de conduits vaudusiens : les puits-cheminées. La réponse du système de drainage s'est reproduite au cours du Pliocène à chaque stade de la remontée du niveau de base. Durant le Pliocène (5,32 à 2 Ma), lors du remblaiement des rias, l'Ardèche a aussi connu de longues phases de stabilité propices à la spéléogenèse.
Il s'agit d'un drainage des eaux du plateau de Saint-Remèze sur lequel se sont connectés de larges recoupements souterrains de méandre de l'Ardèche. L'observation détaillée des grands niveaux de l'endokarst a révélé en retour l'existence de stades intermédiaires dans l'évolution du niveau de base et permis d'affiner et d'enrichir la connaissance de l'évolution du niveau de base régional.
Étude des transferts de masse et de chaleur dans la grotte de Lascaux : le suivi climatique et le simulateur
Authors: Lacanette Delphine , Malaurent Philippe , Caltagirone Jean-Paul , Brunet Jacques 
Published: November 2018

La grotte de Lascaux, découverte en 1940 et située en Dordogne dans la vallée de la Vézère est inscrite au Patrimoine Mondial de l'Unesco. Elle est considérée comme l'une des grottes ornées les plus importantes au monde. Les visites qui ont suivi sa découverte ont perturbé l'équilibre de la cavité et induit sa fermeture en 1963. Depuis, elle a retrouvé un état à peu près stable, jusqu'en 2001 où une attaque de micro-organismes a eu lieu. Suite à cette prolifération, un comité scientifique international pluridisciplinaire a été créé par le ministre de la Culture et de la Communication. Ce comité a d'emblée souhaité disposer d'une meilleure compréhension des écoulements présents dans la cavité. Pour répondre à cette demande un nouvel outil a été créé, le «Simulateur Lascaux», basé sur un code de mécanique des fluides numérique. Un des principaux atouts de cette méthode est son caractère non intrusif. Deux configurations climatiques ont été choisies dans cet article. En septembre 1981, la grotte était dans des conditions «stables» : les températures dans la roche entourant la grotte suivaient le schéma classique augmentant avec la profondeur. La seconde configuration (en décembre 1999) concerne une période précédant des travaux dans la cavité : les températures se sont inversées se trouvant être plus élevées à la voûte qu'au sol.
Cette inversion a conduit au confinement de la grotte. Finalement, les écoulements résultant du retrait d'une cloison ont été appréciés grâce au simulateur, et il a été montré un impact négligeable de ce retrait sur l'équilibre de la cavité.
Epithelial-To-Mesenchymal Transition and Migration of Human Peritoneal Mesothelial Cells Undergoing Senescence
Authors: Kawka Edyta , Witowski Janusz , Sandoval Pilar , Rudolf Andras , Vidal Angela Rynne , Cabrera Manuel Lopez , Jörres Achim 
Published: November 2018

Background Epithelial-to-mesenchymal transition (EMT) of human peritoneal mesothelial cells (HPMCs) contributes to fibrotic thickening of the peritoneum that develops in patients on peritoneal dialysis (PD). The process is thought to be largely mediated by transforming growth factor-beta (TGF-β). As TGF-β has also been implicated in senescence of HPMCs, we have performed an exploratory study to examine if senescent HPMCs can undergo EMT. Methods Omentum-derived HPMCs were rendered senescent by repeated passages in culture. Features of EMT were assessed by immunostaining and quantitative polymerase chain reaction (qPCR) at various stages of the HPMC lifespan and after treatment with or without TGF-β. The motility of HPMCs was assessed in a scratch wound migration assay. Results Replicative senescence of HPMCs was associated with a gradual increase in the constitutive expression of EMT markers, including increased production of extracellular matrix proteins. However, senescent HPMCs also retained epithelial cell features such as cytokeratin, calretinin, and E-cadherin and showed decreased, rather than increased, motility. In contrast, exposure to TGF-β resulted in an up-regulation of mesenchymal markers and down-regulation of epithelial markers. Such effects of TGF-β occurred both in young and senescent cells, although they were less pronounced in senescence. Conclusions Senescence of HPMCs is associated with spontaneous development of several EMT features. At the same time, senescent HPMCs preserve epithelial cell-like characteristics and are less prone to develop a full EMT phenotype in response to TGF-β. These observations may support the concept of cellular senescence being antagonistically pleiotropic with regard to EMT.
Computational model and physical and technical factors determining the plutonium proliferation resistance
Authors: Kulikov Yevgeny , Kulikov Gennady , Apse Vladimir , Shmelev Anatoly , Geraskin Nikolay 
Published: November 2018

Since the closed nuclear fuel cycle suggests that plutonium is extracted from irradiated fuel and is recycled in nuclear reactors as part of the loaded fuel, proliferation resistance of fissile materials (plutonium) is becoming a problem of a practical significance. It is important to understand to what extent the physical and technical properties of fissile materials are capable to prevent these from being diverted to nonenergy uses. This paper considers the term ”proliferation resistance” from a physical and technical point of view with no measures taken for the physical protection, accounting and control of nuclear materials. Thus, proliferation resistance of plutonium means that it is technically impossible to fabricate a nuclear explosive device (NED) of the implosion type due to the overheating of the device’s components and the resultant NED failure.
The following conclusions have been made.

The assessment of the plutonium proliferation resistance is not justified where it relies on the analysis of an implosion-type NED excluding the use of modern heat-resistant and heat-conducting chemical explosives (CE) which are inaccessible.

Consideration of the asymptotic temperature profile in the NED components is not justified enough for the development of plutonium proliferation resistance recommendations.

No options enabling the slowdown of the NED warm-up process have been exhausted for analyzing the physical and technical factors that determine the proliferation resistance of plutonium.

The assessment of the plutonium proliferation resistance is not justified where it relies on the analysis of an implosion-type NED excluding the use of modern heat-resistant and heat-conducting chemical explosives (CE) which are inaccessible.
Consideration of the asymptotic temperature profile in the NED components is not justified enough for the development of plutonium proliferation resistance recommendations.
No options enabling the slowdown of the NED warm-up process have been exhausted for analyzing the physical and technical factors that determine the proliferation resistance of plutonium.
General conclusion. The underlying rationale in a fundamental monograph by Dr. G. Kessler proved to be insufficiently valid, which has led to an unfounded inference as to the status of the plutonium proliferation resistance. The development of the procedures used and other factors taken into account are expected to increase the requirements to the content of the 238Pu isotope in plutonium for ensuring its proliferation resistance.
Lead reactor of small power with metallic fuel
Authors: Khorasanov Georgiy , Samokhin Dmitriy , Zevyakin Aleksandr , Zemskov Yevgeniy , Blokhin Anatoliy 
Published: November 2018

The possibility for obtaining a hard neutron spectrum in small reactor cores has been considered. A harder spectrum than spectra in known fast sodium cooled and molten salt reactors has been obtained thanks to the selection of relatively small core dimensions and the use of metallic fuel and natural lead (natPb) coolant. The calculations for these compositions achieve an increased average neutron energy and a large fraction of hard neutrons in the spectrum (with energies greater than 0.8 MeV) caused by a minor inelastic interaction of neutrons with the fuel with no light chemical elements and with the coolant containing 52.3% of 208Pb, a low neutron-moderating isotope.
An interest in creating reactors with a hard neutron spectrum is explained by the fact that such reactors can be practically used as special burners of minor actinides (MA), and as isotope production and research reactors with new consumer properties. With uranium oxide fuel (UO2) substituted by metallic uranium-plutonium fuel (U-Pu-Zr), the reactors under consideration have the average energy of neutrons and the fraction of hard neutrons increasing from 0.554 to 0.724 MeV and from 18 to 28% respectively. At the same time, the one-group fission cross-section of 241Am increases from 0.359 to 0.536 barn, while the probability of the 241Am fission increases from 22 to 39%. It is proposed that power-grade plutonium resulting from regeneration of irradiated fuel from fast sodium cooled power reactors be used as part of the fuel for future burner reactors. It contains unburnt plutonium isotopes and some 1% of MAs which transmutate into fission products in the process of being reburnt in a harder spectrum. This will make it possible to reduce the MA content in the burner reactor spent fuel and to facilitate so the long-term storage conditions for high-level nuclear waste in dedicated devices.
Analysis of acoustic leak signals for enhancing sensitivity of control due to the creation of effective diagnostic indicators
Authors: Leskin Sergey , Shvetsov Dmitry , Trykov Evgeny , Puzakov Aleksey 
Published: November 2018

Acoustic leak control systems (for instance, SAKT) are used at present for controlling leak tightness of equipment and pipelines, as well as for detecting in timely manner coolant leaks from the primary cooling circuit of nuclear reactor installations (NRI) during operation of power unit on different power levels in the modes of normal operation and during disturbances of normal operation. Time averaged dispersion of acoustic signal is used as the main diagnostic indicator for detecting leaks in these systems. Sensitivity of this indicator is determined by the exceedance by the signal of the preset threshold value which is defined in accordance with the background. Here, background values of acoustic signal depend on the operational modes of the equipment and do not allow in many cases determining coolant leak during early stages of leak development.
New approach to the formation of diagnostic indicators for detecting loss of sealing in the circuit during early stage of development of coolant leak is suggested.
Methodology for obtaining diagnostic indicators is based on the processing in different frequency bands of acoustic signal accompanying coolant leakage from the pipeline using the method of principal components.
Efficiency of the developed methodology of coolant leak detection is illustrated by processing acoustic signals for experimental facility modeling coolant leakage in case of loss of sealing of the circuit.
Even in the presence of significant acoustic background sensitivity of the method allows detecting leaks with significantly lower flow rates (up to five times smaller) than the conventional processing of acoustic signals.
Implementation of the developed methodology will not require significant expenditures for upgrading already existing leak control systems operated at present on different NPPs.
Appariran per me le stell'in cielo Orlanda di Lassa in Julija Skjavetića. Stilno-kritična primerjava
Authors: Kos Koraljka 
Published: November 2018

Glede na to, da je struktura renesančnega madrigala v veliki meri določena z odnosom med tekstom in glasbo, omogoča primerjava dveh ali več del na isti tekst dragoceno možnost odkrivanja osebnega izraza posameznih skladateljev. V pričujočem prispevku sta analizirana in primerjana dva madrigala, ki sta bila komponirana na isti tekst na začetku klasične dobe v razvijanju te kompozicijske vrste. Lassova skladba je nastala med leti 1552 in 1554 (prvič objavljena 1560), Skjavetićeva pa je bila objavljena leta 1562. Predloga Appariran per me le stell' in cielo, na katero sta bila komponirana oba madrigala, je tipično petrarkistična alegorična slika v enajstercu, bogata na metaforah in izrazitih muzikabilnih kvalitetah. Lasso in Skjavetić sta pristopila k temu tekstu na bistveno različen način. Na temelju istih značilnosti renesančne polifonije je vsak od njiju ustvaril izrazito oseben glasbeni korelat pesnitve. Čeravno je Skjavetić na začetku svojega madrigala prinesel melodični citat v čast velikemu mojstru, je nadaljnji potek njegove skladbe popolnoma različen od Lassove. O tem ne govorijo samo modus in kadence, ampak tudi tekstura in formalna zasnova njegovega madrigala. Medtem ko se Lassova glasba giblje brez ekstremnih notnih vrednosti, s pogosto rabo silabičnosti in sloga nota proti noti, z zmerno rabo ponavljanja in redkih primerov deskriptivniosti, pa je Skjavetić v svojem madrigalu razvil bogat kontrapunktični slog, ki ga označujejo komplicirana ponavljanja manjših ali večjih delov teksta, mojstrska raba kadenc, kontrastiranje med bujno melizmatiko in silabičnostjo kot nasprotjema med posameznimi vrstami gibanja. Lassova skladba rase v širokem loku k zaključku in deluje kot vedra, lahkotna slika, nastala iz splošne atmosfere teksta, Skjavetić pa je s fino igro detajlov oživel slikovite, emocionalne in zvočne plasti poetične predolge.
Slovenščina 2.0: “Jezikovne tehnologije”
Authors: Erjavec Tomaž , Žganec Gros Jerneja 
Published: November 2018

Raziskave in razvoj na področju jezikovnih tehnologij se danes za jezike sširokim krogom govorcev pospešeno prenašajo v komercialne sisteme, kipostajajo vse bolj razširjeni. Denimo, rešitve samodejne prepoznave govora in samodejne sinteze govora se množično vgrajujejo v cenovno ugodne programske pakete, namenjene predvsem uporabi na osebnih računalnikih in prenosnih telefonih. Evropa je danes eden najnaprednejših trgov za jezikovne tehnologije. Evropska unija si prizadeva, da so potrebna orodja in viri na razpolago za vse njene jezike, kot tudi glavne svetovne komercialne jezike, s čimer utira pot večjezikovni informacijski družbi ter enotnemu digitalnemu trgu.
Pogled na knjigo Le parti del discorso Giampaola Salvija
Authors: Grošelj Robert 
Published: November 2018

Giampaolo Salvi, eden najpomembnejših italianistov (med drugim tudi sourednik in soavtor velikih italijanskih slovnic Grande Grammatica Italiana di Consultazione, 1988–1995, 2001, in Grammatica dell’Italiano Antico, 2010), redni profesor na Oddelku za romanistiko Univerze Loránda Eötvösa v Budimpešti, je 2013 (ponatis 2015) objavil knjigo Le parti del discorso (Carocci editore), v kateri pretresa besednovrstno teorijo, v prvi vrsti italianistično. Knjiga je razdeljena na šest osrednjih poglavij: 1. Kako opredeliti besedne vrste, 2. Tradicionalna klasifikacija besednih vrst, 3. Samostalnik in pridevnik, 4. Zaimki in determinativi, 5. Glagol, 6. Prislovi, predlogi, vezniki; jedro knjige spremljata Uvod in Zaključek. Koliko besednih vrst in katere. Na koncu sledi še izbrana osnovna Bibliografija (137–140).
On Existence, Inconsistency, and Indispensability
Authors: Antunes Henrique 
Published: November 2018

In this paper I sketch some lines of response to Mark Colyvan’s (2008) indispensability arguments for the existence of inconsistent objects, being mainly concerned with the indispens ability of inconsistent mathematical entities. My response will draw heavily on Jody Azzouni’s (2004) deflationary nominalism.
Prevalência de crianças e adolescentes brasileiros que atenderam critérios de saúde para aptidão cardiorrespiratória: uma revisão sistemática
Authors: Gonçalves Eliane Cristina de Andrade , Alves Junior Carlos Alencar Souza , Nunes Heloyse Elaine Gimenes , Souza Michele Caroline de , Silva Diego Augusto Santos 
Published: November 2018

The study aimed to systematically review the literature to identify the prevalence of Brazilian children and adolescents that meet health criteria for cardiorespiratory fitness (CRF). The search was performed in the electronic databases (PubMED, SciELO, LILACS, Scopus, SPORTDiscus and Web of Science) and list of references of identified articles. Inclusion criteria were: population composed of children and/or adolescents (0-19 years or average age up to 19 years); studies with Brazilian children and/or adolescents and observational studies with cross-sectional or longitudinal design. The process of analysis of studies involved reading titles, abstracts and full texts. After these phases, 60 articles were eligible. Regarding the design, two studies were longitudinal. Of the total studies included, 49 presented moderate methodological quality values and 11 presented low methodological quality values, according to National Heart, Lung, and Blood Institute instrument. The prevalence of children and adolescents who met CRF health criteria varied among studies (7.5% to 70.4%), and this variation was higher in girls than in boys. Total of 49.093 individuals aged 6-19 years were surveyed to compute all of these studies, resulting in 32.2% of subjects (27.7% of boys and 28.4% of girls) with CRF levels adequate for health around Brazil. These results may help to screen the pediatric population at risk if CRF is considered as a health measure.
A questão do mau gosto, entre o juízo estético e os prazeres "culpáveis"
Authors: Thériault Mélissa 
Published: November 2018

Em matéria de apreciação estética, todos nós temos "prazeres culpáveis", esses momentos nos quais sentimos que não se deveria apreciar uma obra julgada indigna de nossa estima, mas, contrariando nossos desejos, nós não podemos fazer outra coisa senão experimentar um inegável êxtase. Às vezes designada pela expressão akrasia estética (conceito emprestado do vocabulário da moral), esta inclinação habitual consiste em ir contra seu melhor juízo, isto é, demonstrar irracionalidade por não fazer a coisa que, em teoria, seria a mais apropriada (neste caso: não gostar da "boa" arte ou gostar da "má” arte). Segundo essa perspectiva, haveria bons e maus julgamentos estéticos. Mas isso implica uma crença na existência de uma norma objetiva de qualidade estética (o que, de saída, não é evidente) que permitiria determinar se um artefato lhe corresponde ou não). Sobre o que repousa o "comando moral" segundo o qual se deveria reprovar o que nos agrada em nome de uma convenção? Não há algo de profundamente problemático na ideia de que seríamos "obrigados" a apreciar as obras em função de uma norma heterogênea e não em função daquilo que realmente sentimos diante delas? Este artigo será a ocasião para discutir essas questões tão fascinantes quanto polêmicas.
Jovens na modalidade EJA: do “ficar de boa” à função das tecnologias digitais de informação, comunicação e expressão
Authors: Souza Helga Valéria de Lima , Lopes de Sousa Carlos Alberto 
Published: November 2018

A partir da constatação do fenômeno da juvenilização em turmas de Educação de Jovens e Adultos (EJA), realizou-se uma pesquisa que possibilitasse a manifestação discursiva destes jovens, apresentando suas autodefinições como jovens ou adultos e a função das Tecnologias Digitais de Informação, Comunicação e Expressão (TDICE). Sobre o perfil do jovem educando da EJA, dialogou-se com Oliveira (1999), Mello (2009) e Dayrell, Nogueira e Miranda (2011). Para melhor entendimento sobre a função das TDICE, partiu-se de Alava (2002). Foram realizadas entrevistas em grupo e individuais (GASKELL, 2004), com a participação de nove educandos de uma escola pública. Os resultados indicaram que os sujeitos pesquisados se autoclassificam como jovens, tendo como principal critério “ficar de boa”. Os adultos são referenciados como aqueles que “têm pendências”, ou seja, necessitam de pagar contas e de trabalhar para prover seu próprio sustento e o das suas famílias. Atribuem e utilizam as TDICE em função da comunicação, da inserção social, da diversão e de pesquisas diversificadas, contudo sem foco em conteúdos escolares. O aspecto norteador para que os educandos se autodefinam jovens, jovens-adultos ou adultos tem como critérios a visão, o posicionamento e os discursos apresentados por suas famílias no processo de interação social, sejam eles diretos ou indiretos.
Secularidade e sacralidade na criação musical contemporânea: tensões e transações
Authors: Teixeira Alfredo 
Published: November 2018

Depois de um período em que a secularização, como modelo explicativo – linear e teleológico –afirmou-se hegemonicamente nas ciências sociais, tornou-se necessário encontrar outras vias de acesso aos lugares de reconfiguração do religioso, no contexto das múltiplas modernidades. Nesta situação, tornou-se decisivo reaproximar o olhar científico, em diferentes escalas, dos lugares em que estão a ser construídas novas relações entre a esfera do religioso e os outros mundos sociais, mediadas pelas deslocações do sagrado. O presente artigo explora o terreno da criação musical contemporânea como laboratório para a descoberta destas novas configurações.