1,762,055 research outputs found
Participant 551-552 Community Conversations Group Interview
No full textIn this group interview, Participants 551 and 552 share their experience during the COVID-19 pandemic, including challenges with home schooling their children, working from home, and job loss. Participants share their experience contracting the virus. One of the participants shares that they had a very severe case, while the other participant describes being mostly asymptomatic. Participants share that they rely on the internet to get COVID-19-related information.New Jersey Department of Healt
Geochemistry, trace elements and minerals at DSDP Holes 80-550B and 80-551
No full textThe Leg 80 basalts drilled on the Porcupine Abyssal Plain 10 km southwest of Goban Spur (Hole 550B) and on the western edge of Goban Spur (Hole 551), respectively, are typical light-rare-earth-element- (LREE-) depleted oceanic tholeiites. The basalts from the two holes are almost identical; most of their primary geochemical and mineralogical characteristics have been preserved, but they have undergone some low-temperature alteration by seawater, such as enrichment in K, Rb, and Cs and development of secondary potassic minerals of the "brownstone facies." K/Ar dating fail to give realistic emplacement ages; the apparent ages obtained become younger with alteration (causing an increase in K2O). Hole 551 basalts are clearly different from the continental tholeiites emplaced on the margins of oceanizing domains during the prerift and synrift stages
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
Band 2, 551 (Sammlung Friedlaender)
No full textBAND 2, 551 (SAMMLUNG FRIEDLAENDER)
Band 2, 551 (Sammlung Friedlaender) (Public Domain) (1
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
Appropriate Similarity Measures for Author Cocitation Analysis
Get PDFWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Resolución UNRN Nº 551/2009. Reglamento para la Realización de Cursos de Extensión Universitaria
No full textFil: Universidad Nacional de Río Negro (U). Universidad Nacional de Río Negro. Río Negro, ArgentinaResolución UNRN Nº 551/2009. Apruébese el Reglamento para la Realización de Cursos de Extensión Universitaria que como anexo forma parte de la presente Resolución.fals
Converting a <i>c</i>-type to a <i>b</i>-type Cytochrome: Met61 to His61 Mutant of <i>Pseudomonas</i> Cytochrome <i>c</i>-551
No full textThe gene nirM, coding for cytochrome c-551 in Pseudomonas stutzeri substrain ZoBell, was
engineered to mutate Met61, the sixth ligand to the heme c, into His61, thereby converting the typical
Met-His coordination of a c-type cytochrome into His-His, typical of b-type cytochromes. The mutant
protein was expressed heterologously in Escherichia coli at levels 3-fold higher than in Pseudomonas
and purified to homogeneity. The mutant retained low-spin visible spectral characteristics, indicating that
the strong field ligand His 61 was coordinated to the iron. The physiochemical properties of the mutant
were measured and compared to the wild-type properties. These included visible spectra, ligand binding
reactions, stability to temperature and chemical denaturant, oxidation−reduction potentials, and electron-transfer kinetics to the physiological nitrite reductase of Pseudomonas. Despite a change in potential
from the normal 260 mV to 55 mV, the mutant retained many of the properties of the c-551 family
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