157,631 research outputs found
SAIS User Survey Summary Report
No full textThe report provides a summary of the findings of a survey run in 2021. The findings cover the following topics: A. General summary and main findings B. SAIS survey respondents’ profile and avalanche knowledge C. SAIS survey respondents’ familiarity with SAIS reports D. SAIS survey respondents’ understanding of the hazard scale and danger roseThe data set associated with the report can be found here: http://hdl.handle.net/11667/192 Supported by the AHRC Research Project "Varieties of Risk" The report is a collaboration between Philip Ebert and David Comerfor
A. C. Découflé, La Prospective, collection «Que sais-je ?», 1972
No full textKarpik Lucien. A. C. Découflé, La Prospective, collection «Que sais-je ?», 1972. In: Sociologie du travail, 15ᵉ année n°3, Juillet-septembre 1973. pp. 340-342
Sistemas complexos com surfactante aniônico em soluções salinas com água (sais: CsCI e CaCI)
No full textTese (doutorado) - Universidade Federal de Santa Catarina, Centro de Ciências Físicas e Matemáticas, Programa de Pós-Graduação em Física, Florianópolis, 2013.Este trabalho de Tese trata de investigações experimentais sobre efeitos da adição de sais eletrolíticos monovalente e divalente fortes, como o cloreto de Césio (CsCl) e o cloreto de cálcio (CaCl2), nas estruturas, formas e tamanhos dos agregados micelares encontrados nas fases homogêneas líquido-cristalinas da mistura binária do surfactante amônio pentadecafluorooctanoato (APFO) com água (H2O). Técnicas experimentais combinadas, como microscopia óptica polarizante, viscosimetria, refratometria Abbe, transmitância óptica com luz laser, turbidez, difração por raios-X e o uso de um método de observação direta em sistema especialmente construído para determinação de propriedades ópticas/termodinâmicas, mostram que a adição de CsCl ao sistema binário APFO/H2O influencia enormemente as fases, extinguindo a fase nemática micelar e produzindo novos tipos de estruturas, tamanho e forma dos agregados micelares em concentrações altas de APFO e CsCl. Em concentrações baixas de APFO e altas de CsCl, novas estruturas são formadas e identificadas como estruturas vesiculares polimórficas, com multicamadas (bicamadas múltiplas) e monocamadas (bicamada única), possuindo tamanhos que atingem até 120 ?m de diâmetro e, por isso, denominadas de "vesículas gigantes". Estes agregados vesiculares (esféricos e cilíndricos) são induzidos espontaneamente na solução simplesmente pelo efeito de CsCl adicionado, isto é, não há a necessidade de técnica especial para induzir sua formação. A formação destas vesículas é surpreendente uma vez que as moléculas do surfactante APFO são aniônicas e possuem cadeia carbônica simples.Abstract : This thesis deals with experimental investigations on the effects of the addition of the electrolytic salts cesium chloride (CsCl) and calcium chloride (CaCl2), on structures, shapes and sizes of the micellar aggregates found in homogeneous liquid-crystalline phases of the ammonium pentadecafluorooctanoate and water binary mixtures (APFO/H2O). Combined experimental techniques, such as polarizing optical microscopy, viscometry, Abbe refractometry, optical transmittance with laser light, turbidity, x-ray diffraction and the use of a method of direct observation by a system specially built for determination of optical properties / thermodynamics, show that the addition of CsCl to the binary system APFO/H2O greatly influences the phases, quenching the micellar nematic phase and producing new types of structures, size and form of the micellar aggregates at high concentrations of APFO and CsCl. At low APFO and high CsCl concentrations, new structures are formed and identified as polymorphic vesicular structures, multilayers (multiple bilayers) and monolayers (single bilayer) having sizes that reach up to 120 ìm in diameter and, therefore, nominated the "giant vesicles". These vesicular aggregates (sphericals and cylindricals) are promoted in the solution spontaneously, simply by the effect of the CsCl added, that is, no special technique is needed to promote their formation. Vesicle's formation is surprising once the molecules of the surfactant APFO are anionics and have single carbon tails
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Understanding 1968: the case of Brest
No full textThis article examines the dominance of Paris in how May '68 has been portrayed over the years. It will be argued, through a case-study of the revolt in the Breton city of Brest, that the Paris-centred approach is one that belies the true nationwide aspect of May/June 1968. As one of a range of characteristics, the concentration on the Latin Quarter has helped mould what Kristin Ross has described as the 'official history' of 1968. An examination of how the events were played out within different regional contexts would go a long way towards helping overcome the shortcomings of the increasingly narrow portrayal that has come to dominate the stereotypical image of 1968
Diasporas and democratization in the post-communist world
No full textIf diaspora communities are socialized with democratic values in Western societies, they could be expected to be sympathetic to the democratization of their home countries. However, there is a high degree of variation in their behavior. Contrary to the predominant understanding in the literature that diasporas act in exclusively nationalist ways, this article argues that they do engage with the democratization of their home countries. Various challenges to the sovereignty of their homelands explain whether diasporas involve with procedural or liberal aspects of democratization. Drawing evidence from the activities of the Ukrainian, Serbian, Albanian and Armenian diasporas after the end of communism, I argue that unless diasporas are linked to home countries that enjoy both international legal and domestic sovereignty, they will involve only with procedural aspects of democratization. Diasporas filter international pressure to democratize post-communist societies by utilizing democratic procedures to advance unresolved nationalist goals
The pebbles/boulders size distributions on Sais: Rosetta’s final landing site on comet 67P/Churyumov–Gerasimenko
No full textInternational audienceBy using the imagery acquired by the Optical, Spectroscopic, and Infrared Remote Imaging System Wide-Angle Camera (OSIRIS WAC), we prepare a high-resolution morphological map of the Rosetta Sais final landing site, characterized by an outcropping consolidated terrain unit, a coarse boulder deposit and a fine particle deposit. Thanks to the 0.014 m resolution images, we derive the pebbles/boulders size-frequency distribution (SFD) of the area in the size range of 0.07–0.70 m. Sais’ SFD is best fitted with a two-segment differential power law: the first segment is in the range 0.07–0.26 m, with an index of −1.7 ± 0.1, while the second is in the range 0.26–0.50 m, with an index of −4.2 +0.4/−0.8. The ‘knee’ of the SFD, located at 0.26 m, is evident both in the coarse and fine deposits. When compared to the Agilkia Rosetta Lander Imaging System images, Sais surface is almost entirely free of the ubiquitous, cm-sized debris blanket observed by Philae. None the less, a similar SFD behaviour of Agilkia, with a steeper distribution above ∼0.3 m, and a flatter trend below that, is observed. The activity evolution of 67P along its orbit provides a coherent scenario of how these deposits were formed. Indeed, different lift pressure values occurring on the two locations and at different heliocentric distances explain the presence of the cm-sized debris blanket on Agilkia observed at 3.0 au inbound. Contrarily, Sais activity after 2.1 au outbound has almost completely eroded the fine deposits fallen during perihelion, resulting in an almost dust-free surface observed at 3.8 au
O. A. C. Review Volume XLVI Issue 5, February 1934
No full textThe focus of this issue is the preparation for College Royal and recognizing its tenth anniversary. This month's agricultural article is a report from the Dominion Parasite Laboratory on the biological control of pests. Other articles provide an account of the activities of a stage manager and the development of the field of home economics at Macdonald College in Quebec. Campus news addresses the success of the 1934 Conversazione, the commemorating of the sixtieth anniversary of the founding of O. A. C., the attendance at the Canadian Author Lecture, and the successful productions of "The Apple Cart" and "Iolanthe". The Macdonald Institute column comments on the Conversat and women's athletics activities in basketball and the rifle club. The Alumni Record supplies alumni updates.EditorialTen Years of the RoyalRamblings on the RoyalBlame it on the stage managerBiological control of insect pests in CanadaNot for girls onlyCollege lifeLiterary sectionO. A. C. sportsfolioAlumni recordMacdonald newsLetters to the editoradvertisin
A necessidade de competir para evitar a inferioridade: Estudos de validação da versão portuguesa da SAIS
No full textFerreira, C., Duarte, C., & Pinto-Gouveia, J. (2011). A necessidade de competir para evitar a inferioridade: Estudos de validação da versão portuguesa da SAIS. Psychologica, 54, 5 - 34. doi:10.14195/1647-8606_54_1A Striving to Avoid Inferiority Scale (SAIS; Gilbert et al., 2007) avalia as crenças acerca
da necessidade de competir ou lutar/esforçar-se para evitar a inferioridade.
Numa amostra de 2411 sujeitos da população geral, verificou-se uma estrutura de
dois factores para a SAIS parte um – striving inseguro e non-striving seguro – e SAIS
parte três –procura e evitamento de competição. Nas três partes encontraram-se
valores elevados de consistência interna, e correlações item-total moderadas a
altas. Comprovou-se a validade de constructo através da análise de correlações com
medidas de ranking social, vinculação ao grupo social, perfeccionismo e sintomatologia
ansiosa, depressiva e stress. Verificou-se uma boa estabilidade temporal.
Esta é uma medida útil na avaliação da patologia do comportamento alimentar,
discriminando entre uma amostra clínica de 91 doentes com perturbação alimentar
e uma amostra de 102 participantes da população normal. Os resultados são
discutidos considerando-se a literatura existente
O. A. C. Review Volume XXXVI Issue 12, August 1924
No full textThis slim summer issue contains the address given by the agricultural section of the British Association for the Advancement of Science, and a report on the visit of this association to the O. A. C. Other articles include instructions on increasing strawberry production and a biography of the author John Masefield. The editorial comments on Rhodes Scholars. The Alumni column provides an update of alumni activities. This issue does not contain a Macdonald column.JoyPresent-day problems in crop productionAfter the strawberry harvestJohn MasefieldVisit of the Agricultural Section of the British Association for the Advancement of ScienceEditorialCollege lifeAlumniadvertisin
Efeito da adição de sais eletrolíticos monovalentes na estrutura, forma e ordem orientacional dos agregados micelares da mistura binária amônio pentadecafluorooctanoato e água
No full textTese (doutorado) - Universidade Federal de Santa Catarina, Centro de Ciências Físicas e matemáticas. Programa de Pós-graduação em FísicaO principal objetivo das pesquisas realizadas e apresentadas neste trabalho esta concentrada nos efeitos da adicao de sais eletroliticos monovalentes fortes, como o cloreto de amonio (NH4Cl) e o cloreto de potassio (KCl), na formação de novas estruturas com propriedades liquido-cristalinas ou mudanças drasticas nas estruturas micelares pré-existentes, nas fases micelares isotropica, nematica e lamelar presentes no sistema binario contendo o surfactante amonio entadeca°uorooctanoato e agua (APFO / H2O). Inves-tigamos tambem, a in°u^encia que os sais NH4Cl e KCl produziram na forma e no tamanho dos agregados micelares, bem como sua dependencia com a temperatura. Diversas tecnicas experimentais, como microscopia optica, refratometria de ABBE, tramitancia de luz, difraçao por raios X e etc, foram usadas e dos resultados destas medidas, suas temperaturas de transicoes de fases foram determinadas e uma nova estrutura, formada espontaneamente na solucao e denominada "vesiculas", foi identicada, isto e, estas vesiculas aparecem simplesmente pelo efeito do sal adicionado. Estudos teoricos usando campo medio (Maier-Saupe) em combinaçao, com resultados experimentais foram realizados e o comportamento do paramentro de ordem orientacional micelar com a temperatura, foram obtidas para varias amostras. The main aim of the research performed and presented in this work is concentrated in the e®ects of the addition of strongs monovalents electrolytic salts, as the ammonium chloride (NH4Cl) and the potassium chloride (KCl), in the formation of new structures with liquid-crystallines properties or drastic changes in pre-existing micellar structures in the isotropic, nematic and lamellar phases present in the binary system containing the surfactant pentadeca°uorooctanoate and water (APFO / H2O). We also investigated the in°uence that the salts (NH4Cl and KCl) had on the size and shape of the micellar aggregates as well as their dependency on temperature. Several experimental techniques such as polarizing optical microscopy, direct bulk solution observation, Abbe refractometry, laser light transmission and small angle X ray di®raction were used and from results of these measurements, phase transitions temperatures were determined and, a new structure, formed spontaneously in the solution and named "vesicles", was identi¯ed, i.e., these vesicles appear in the solution simply by the e®ect of the added salt. Theoretical studies using mean ¯eld approximation (Maier-Saupe) in combination with experimentals data were performed and the behavior of the micellar orientational order parameter on temperature, for several samples, obtained
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