632 research outputs found
Un film peut en cacher un autre. À propos des différentes versions du Cuirassé Potemkine et de la réapparition de la mise en musique d’Edmund Meisel
No full textLe Cuirassé Potemkine d’Eisenstein connut, lors de sa distribution en Allemagne, un accompagnement musical dû au compositeur Edmund Meisel qui fit sensation et enthousiasma le réalisateur quand il put l’entendre. Cet accompagnement mythique, perdu puis retrouvé, donna lieu à des projections-concerts dans les dernières décennies. Cependant la découverte récente au Musée des techniques de Vienne de disques appartenant à la version sonorisée du film lors de sa ressortie en 1931 est un événement sans doute plus important : c’est Meisel lui-même qui reprit sa partition, introduisit des chœurs chantés par la troupe de Piscator, dans cette version « oubliée » du film dont on avait retranché les cartons pour en faire un film sonore. L’auteur retrace l’ensemble de la question des différentes versions du film et des différentes musiques qu’on lui adjoignit, question qui révèle bien d’autres enjeux que simplement musicaux : idéologiques, politiques, économiques.Eisenstein’s Battleship Potemkin, when shown in Germany, was accompanied by a musical composition by Edmund Meisel, which thrilled audiences and its director, upon hearing it. The rediscovery of this mythic accompaniment has given way to several silent film concerts over the past few decades. Yet, the recent unearthing at the Vienna Museum of Technology of records from the 1931 synchronized sound release is an even more important event. In this « forgotten » sound version of the film, whose subtitles had been removed, Meisel himself reworked his score and introduced choruses sung by the Piscator company. The author retraces the question of different film versions and their associated music, a question that reveals many other stakes beyond music : ideological, political, economic
Good Night, Bat! : Good Morning, Squirrel! by P. Meisel
No full textMeisel, Paul. Good Night, Bat! : Good Morning, Squirrel! Highlights, 2016.Paul Meisel, Geisel Honor award winning author and illustrator, creates a humorous story about friendship and miscommunication. This fictional picture book follows homeless Bat on his journey to finding the perfect new home. Through whimsical mis-read notes the friendship between Bat and Squirrel blossoms.The literary content in this story is invaluable for young readers. Meisel demonstrates the complexities of the English language by playing with simple words and phrases while demanding that readers also read the images. This play on words offers a charming world in which young children can explore and expand upon their vocabulary.Complimenting this hilarious story are illustrations that demand the reader’s attention. At a first glance, the visuals appear gloomy due to the brown, green and grey tones. However, the expressions of Bat and Squirrel, along with the simple but easily misunderstood leaf note’s enable young readers to become enthralled in the world of Bat and Squirrel.Combining the two essential features of playing with language and reading illustrations, Good Night, Bat! Good Morning, Squirrel! is an essential read-aloud story for any early childhood classroom.Highly Recommended: 4 out of 4 starsReviewer: Leah Den HaanLeah Den Haan is a grade one French immersion teacher with Edmonton Public Schools. She has always enjoyed children’s literature and loves sharing her love of reading with her students on a daily basis.</jats:p
Combined chemical separation of Lu, Hf, Sm, Nd, and REEs from a single rock digest: Precise and accurate isotope Determinations of Lu-Hf and Sm-Nd using multicollector-ICPMS
No full textA combined procedure for separating Lu, Hf, Sm, Nd, and rare earth elements (REEs) from a single sample digest is presented. The procedure consists of the following five steps: (1) sample dissolution via sodium peroxide sintering; (2) separation of the high field strength elements from the REEs and other matrix elements by a HF-free anion-exchange column procedure; (3) purification of Hf on a cation-exchange resin; (4) separation of REEs from other matrix elements by cation exchange; (5) Lu, Sm, and Nd separation from the other REEs by reversed-phase ion chromatography. Analytical reproducibilities of Sm-Nd and Lu-Hf isotope systematics are demonstrated for standard solutions and international rock reference materials. Results show overall good reproducibilities for Sm-Nd systematics independent of the rock type analyzed. For the Lu-Hf systematics, the reproducibility of the parent/daughter ratio is much better for JB-1 (basalt) than for two analyzed felsic crustal rocks (DR-N and an Archaean granitoid). It is demonstrated that this poorer reproducibility of the Lu/Hf ratio is truly caused by sample heterogeneity; thus, results are geologically reasonable
Plan of the town of Dorchester /
No full textRelief shown by hachures.Oriented with north toward the upper right.Copy imperfect: Stained, missing small pieces, backed by cloth. DL
The potential impact of municipal solid waste incinerators ashes on the anthropogenic osmium budget
No full textOsmium release from Municipal Solid Waste Incinerators (MSWI), even if acknowledged to occur at least over the last fifteen years, remains overlooked in the majority of recent studies. We present the osmium concentration and (187)Os/(188)Os isotopic measurements of different kinds of bottom and fly ash samples from MSWI plants and reference materials of incinerator fly ash (BCR176 and BCR176R). The analysis of the unknown ash samples shows a relatively wide range of (187)Os/(188)Os ratios (0.24-0.70) and Os concentrations (from 0.026ng/g to 1.65ng/g). Osmium concentrations and isotopic signatures differ from those of other known Os sources, either natural or manmade, suggesting a mixture of both contributions in the MSWI feedstock material. Furthermore, the comparison between the BCR176 and the renewed BCR176R indicates a decrease in Os concentration of one order of magnitude over the years (from 1 to 0.1ng/g) due to improved recycling efficiency of Os-bearing waste. The estimated annual amount of Os from a typical incinerator (using average Os values and MSWI mass balance) is 13.4g/a. The osmium potentially released from MSWI smokestacks is predicted to be from 16 to 38ng Os/m(2)/a, considering a medium size country having 50 MSWI facilities; therefore much higher than the naturally transported osmium from continental dust in the atmosphere (about 1pg Os/m(2)/a). MSWI systems are considered one of the best options for municipal solid waste management in industrialised countries, but their contribution to the Os budget can be significant
Solid residues from Italian municipal solid waste incinerators: A source for “critical” raw materials
No full textThe incineration of municipal solid wastes is an important part of the waste management system along with recycling and waste disposal, and the solid residues produced after the thermal process have received attention for environmental concerns and the recovery of valuable metals. This study focuses on the Critical Raw Materials (CRM) content in solid residues from two Italian municipal waste incinerator (MSWI) plants. We sampled untreated bottom ash and fly ash residues, i.e. the two main outputs of common grate-furnace incinerators, and determined their total elemental composition with sensitive analytical techniques such as XRF and ICP-MS. After the removal of a few coarse metallic objects from bottom ashes, the corresponding ICP solutions were obtained using strong digestion methods, to ensure the dissolution of the most refractory components that could host significant amounts of precious metals and CRM. The integration of accurate chemical data with a substance flow analysis, which takes into account the mass balance and uncertainties assessment, indicates that bottom and fly ashes can be considered as a low concentration stream of precious and high-tech metals. The magnesium, copper, antimony and zinc contents are close to the corresponding values of a low-grade ore. The distribution of the elements flow between bottom and fly ash, and within different grain size fractions of bottom ash, is appraised. Most elements are enriched in the bottom ash flow, especially in the fine grained fractions. However, the calculated transfer coefficients indicate that Sb and Zn strongly partition into the fly ashes. The comparison with available studies indicates that the CRM concentrations in the untreated solid residues are comparable with those residues that undergo post-treatment beneficiations, e.g. separation between ferrous and non-ferrous fractions. The suggested separate collection of "fresh" bottom ash, which could be processed for further mineral upgrading, can constitute an attractive option of the waste management system, when physical-mechanical devices are not available or could not be implemented in old MSWI systems. The suggested procedure may lead to the improvement of recovery efficiency up to 83% for CRM and 94% for other valuable metals
MSWI residues as unconventional source of critical raw materials: understanding possible easy ways to evaluate their occurrence and added-value products.
No full textPGE and Re-Os Isotope Behaviour in a Subduction-Modified Mantle Wedge: A Fresh Look into the Peridotites from the Ulten Zone, Eastern Alps
No full textPeridotites in the upper Austroalpine Ulten zone (Eastern Italy) sample the subduction-modified Variscan mantle wedge. Metasomatism of peridotites during four stages of mantle wedge evolution includes: (1) Intrusion of alkaline melts from an inner, subduction-modified wedge and cryptic enrichment of spinel lherzolites (SL); (2) Reaction with siliceous crustal melts after pressure increase, generating coarse-grained garnet amphibole peridotites (GAP); (3) Crystallisation of abundant amphibole (± apatite and dolomite) from residual hydrous fluids during and/or after peak metamorphism recorded by fine-grained GAP; [4] Subsequent influx of crustal fluids, causing retrograde formation of spinel chlorite amphibole peridotites (SAP) [1-5]. SL and coarse GAP are apparently more fertile, whereas fine GAP and SAP retain the most depleted major-element characteristics. Overall, samples fall on partial melting trends consistent with extraction of low degrees of melt (F≤0.15) at 2-1 GPa.
SL and coarse GAP have ±flat PGE patterns normalised to Primitive Upper Mantle (PUM), or show small decreases or increases from compatible to incompatible PGE. This suggests retention of primary sulphide liquid at low degrees of melting, during which PGE concentrations are little fractionated [6]. Indeed, broad positive correlations between the PGE suggest a common host, likely sulphide, observed in the samples as assemblages of pn ± po and cpy. Most fine-GAP share these patterns, indicating robustness against massive hydrous fluid influx, while Os/Ir > PUM argue against strong Os scavenging by highly oxidising hydrous fluids. Nevertheless, elevated Ru/IrPUM in a subgroup of samples may indicate a role for spinel addition under oxidising conditions. Most samples have 187Os/188Os >PUM, despite sub-PUM Re/Os, which requires addition of, or isotopic equilibration with, 187Os-rich crustal components, most likely via the precipitation of metasomatic sulphide.
[1] Nimis and Morten (2000) J Geodyn 30: 93-115; [2] Rampone and Morten (2001) J Petrol 42: 207-219; [3] Tumiati et al. (2003) Earth Planet Sci Lett 210: 509-526; [4] Sapienza et al. (2009) Contrib Mineral Petrol 158: 401-420; [5] Scambelluri et al. (2006) Contrib Mineral Petrol 151: 372-394; [6] Mungall and Brenan (2014) Geochim Cosmochim Acta 125: 265-289
Efficient N-TIMS rhenium isotope measurements on outgassed tantalum filaments: very low filament blanks determined by a “standard addition” approach
No full textWe have successfully tested two sets of Ta filaments for their suitability to measure Re isotopes by negative thermal ionization mass spectrometry. No significant Re contribution from the filament material itself could be detected. Therefore Ta filaments are a viable, low cost alternative to high purity Pt filaments which are commonly used for Re-Os isotope analyses. A technique whereby Re is directly loaded with H2SO4 into Ba(NO3)2 and precipitated together with BaSO4 on the filament has resulted in stable and constant ion beams. Furthermore, slight oxidation of the Ta filament surface significantly facilitates point loading in the center of the filament. The BaSO4 loading technique has proved to be less sensitive towards time-consuming pre-analytical heating procedures than Ba(NO3)2 on Pt filaments. Furthermore, Re isotopic ratios remained constant over a wider range of measuring temperatures, in contrast to what we observed during Re analyses from Pt filaments loaded with Ba(NO3)2 or BaSO4.</p
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