1,738,325 research outputs found
Pore water chemistry of ODP Sites 201-1225, 201-1226 and 201-1231
No full textHigh-resolution analyses of the oxygen isotope ratio (18O/16O) of dissolved sulfate in pore waters have been made to depths of >400 meters below seafloor (mbsf) at open-ocean and upwelling sites in the eastern equatorial Pacific Ocean. d18O values of dissolved sulfate (d18O-SO4) at the organic-poor open-ocean Site 1231 gave compositions close to modern seawater (+9.5 per mil vs. Vienna-standard mean ocean water, providing no chemical or isotopic evidence for microbial sulfate reduction (MSR). In contrast, the maximum d18O values at Sites 1225 and 1226, which contain higher organic matter contents, are +20 per mil and +28 per mil, respectively. Depth-correlative trends of increasing d18O-SO4, alkalinity, and ammonium and the presence of sulfide indicate significant oxidation of sedimentary organic matter by sulfate-reducing microbial populations at these sites. Although sulfate concentration profiles at Sites 1225 and 1231 both show similarly flat trends without significant net MSR, d18O-SO4 values at Site 1225 reveal the presence of significant microbial sulfur-cycling activity, which contrasts to Site 1231. This activity may include contributions from several processes, including enzyme-catalyzed equilibration between oxygen in sulfate and water superimposed upon bacterial sulfate reduction, which would tend to shift d18O-SO4 toward higher values than MSR alone, and sulfide oxidation, possibly coupled to reduction of Fe and Mn oxides and/or bacterial disproportionation of sulfur intermediates. Large isotope enrichment factors observed at Sites 1225 and 1226 (epsilon values between 42 per mil and 79 per mil) likely reflect concurrent processes of kinetic isotope fractionation, equilibrium fractionation between sulfate and water, and sulfide oxidation at low rates of sulfate reduction. The oxygen isotope ratio of dissolved pore water sulfate is a powerful tool for tracing microbial activity and sulfur cycling by the deep biosphere of deep-sea sediments
Decreto 1231 de 1951
Full text linkContiene el texto completo del Decreto No. 1231 de 1951. Funciones de los jueces superiores
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe 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
Rouleau mortuaire de l'année 1231
No full textRouleau mortuaire de l'année 1231. In: Bibliothèque de l'école des chartes. 1904, tome 65. p. 310
Variations on the Author
Full text link“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
Az Aranybulla megújítása 1231-ben
Full text linkThis study examines the history of the creation of the 1231 renewed version of the Golden Bull originally created by King Andrew II of Hungary (1205-1235) in 1222, as well as the contents of the decree. First, the political conflicts that eventually forced the renewal are discussed briefly. These included the annulment of the marriage between the heir to the throne, Prince Béla and Maria Laskarida; the 1225 expulsion of the Teutonic Order, who settled in the Kingdom of Hungary in 1211; the debates regarding the status of the muslims and jews living in the country; and the revision of the earlier royal land grants between 1228 and 1231. The author believes that the renewed Golden Bull was most likely published at a nationwide legislative assembly close to the 20th of August, the day of St. Stephen, probably at Fehérvár. The primary considerations in the reworking of the Golden Bull are easily identifiable. One of these was the willingness to conform to the interests and viewpoints of the Church. However, another clear goal of some of the changes in the text was expanding the options of Andrew II. The whole decree bears the unmistakable mark of royal power, just like the 1222 original. Therefore, the renewed Golden Bull is also not a collection of the demands of those opposed to the king, instead it contains what the king was willing to concede to quell the political turmoil surrounding him
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