1,724,171 research outputs found
St. Louis & San Francisco (SLSF) "Frisco" 4502
No full textA photograph print showing the St. Louis and San Francisco (SLSF) "Frisco" 4502, 4-8-4, near Poole, OK, on eastbound freight
Block Card 4502 Rambo Lane
No full textThis image was produced by the Auditor's Office in Lucas County, Ohio for tax assessment purposes. Associated dates are approximate. Descriptive terms related to this photograph include: Cape Cod Style | Dwelling | 4502 Rambo Lane (Toledo, Ohio) | Forest Grove Addition (Toledo, Ohio) | Trilby Area (Toledo, Ohio)) | West Toledo Area (Toledo, Ohio
St. Louis & San Francisco (SLSF) "Frisco" 4502
No full textA photograph print showing the St. Louis and San Francisco (SLSF) "Frisco" 4502, 4-8-4
St. Louis & San Francisco (SLSF) "Frisco" 4502
No full textA photograph print showing the St. Louis and San Francisco (SLSF) "Frisco" 4502, 4-8-4, St. Louis, MO. (Note: "Meteor" on tender
Block Card 4502 Jackman Road
No full textThis image was produced by the Auditor's Office in Lucas County, Ohio for tax assessment purposes. Associated dates are approximate. Descriptive terms related to this photograph include: Dwelling | Folk House Style | Vernacular Victorian Style | Stanbery Manor Plat One (Toledo, Ohio) | Willys Park area (Toledo, Ohio) | West Toledo (Toledo, Ohio) | 4502 Jackman Road (Toledo, Ohio
Block Card 4502 289th Street
No full textThis image was produced by the Auditor's Office in Lucas County, Ohio for tax assessment purposes. Associated dates are approximate. Descriptive terms related to this photograph include: Dwelling | 4502 289th Street (Toledo, Ohio) | Cape Cod Style | Wohlleb Addition (Toledo, Ohio) | Point Place (Toledo, Ohio) | North Toledo Area (Toledo, Ohio
Characterization and chronology of refractory inclusions (CAIs) in the CV3 chondrite NWA 4502
Get PDFIn this thesis I report the petrographic, elemental and isotopic (oxygen, Al-Mg, Rb-Sr and uranium) compositions as well as U-Pb ages of five coarse-grained igneous inclusions (Type A CAIs 1 and 4a, Type B CAIs 5, 6 and 7) from the CV chondrite North West Africa (NWA) 4502 the second largest CV chondrite so far after Allende.
At a mineralogical level, NWA 4502 is rather pristine. In comparison with CAIs from Allende and other CV chondrites, CAIs from the NWA 4502 show many similarities with CAIs from other CV3 chondrites. However, all studied NWA 4502 CAI types have low levels of secondary hydrothermal alteration, thermal and shock metamorphism that affected CAIs in other CV chondrites. Even though NWA 4502 shows pristine parent-body characteristics, complexities discovered in some of the isotope systems especially Rb-Sr indicate significant imprint of terrestrial weathering. Acid leached residues of NWA 4502 CAI fractions yield a Pb-Pb age (4567.40 ± 0.27 Ma) and initial 87Sr/86Sr (0.698886 ± 0.000026) and an average initial 26Al/27Al (4.90 ± 1.51 x 10-5) ratio consistent with values reported for Allende and Efremovka CAIs inspite of the differences in secondary processes between these CV chondrites. This leads to the conclusion that secondary processing did not bias the U-Pb isotopic ages of
these CV
CAIs.
The evaluation of three acid leaching procedures aimed at removing weathering products and terrestrial contamination has shown that U-Pb dating of CAIs using the most radiogenic material can be achieved using mild acid leaching methods on coarse grained pyroxene and melilite-rich fractions.
This study enabled us to expand the population of well characterized CV CAIs and provided an insight to better understanding the influence of secondary processes on isotopic systems and the chronology of CAIs
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Get PDF“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
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