133,517 research outputs found
Temple of Concord: interior view looking out from cella
No full textTemple F is one of the best-preserved ancient temples in the world. Sicilian characteristics include omission of columns in the cella.\u000a\u000aThe temples of the later 5th century BCE are of a size similar to that of mainland temples, with stylobates measuring 16-17 x 38-40 m, and have a standard colonnade of 6 by 13 columns (although elsewhere in Sicily 6 by 14 was more frequent) and a cella with pronaos and opisthodomos; Sicilian characteristics include high foundations with four steps, closely spaced colonnades with heavy columns and frequent use of double angle contraction, wide steps in the front and omission of columns in the cella. The temples D (to Hera Lakinia) and F (Concord) in the south-east of the town (ca. 450 BCE and 425 BCE respectively) differ only in minor details and a more accurate execution in the later building. Both have double angle contraction (Temple D only at the eastern front). Temple F is one of the best-preserved ancient temples in the world. Temples D and F, together with the Temple of Zeus and the so-called Temple of Herakles, are arranged scenographically on a ridge at the southern boundary of the town (Valle dei Templi)
MeSH term explosion and author rank improve expert recommendations
No full textInformation overload is an often-cited phenomenon that reduces the productivity, efficiency and efficacy of scientists. One challenge for scientists is to find appropriate collaborators in their research. The literature describes various solutions to the problem of expertise location, but most current approaches do not appear to be very suitable for expert recommendations in biomedical research. In this study, we present the development and initial evaluation of a vector space model-based algorithm to calculate researcher similarity using four inputs: 1) MeSH terms of publications; 2) MeSH terms and author rank; 3) exploded MeSH terms; and 4) exploded MeSH terms and author rank. We developed and evaluated the algorithm using a data set of 17,525 authors and their 22,542 papers. On average, our algorithms correctly predicted 2.5 of the top 5/10 coauthors of individual scientists. Exploded MeSH and author rank outperformed all other algorithms in accuracy, followed closely by MeSH and author rank. Our results show that the accuracy of MeSH term-based matching can be enhanced with other metadata such as author rank
Cell division and ion transport as tests for the discrimination between the action of 2,4-D and fusicoccin
No full textAddition of 2,4-D restores cell division in sycamore cell suspension cultures made resting by transferring them into medium without auxin. Addition of fusicoccin at concentrations between 10-8 and 10- 5 M cannot substitute for the effect of auxin. However fusicoccin clearly influences cell membrane activity in this material, as shown by the increase of K+ uptake and proton secretion. On the other hand no significant effect of 2,4-D on ion transport in sycamore cell suspension cultures was detected. These results suggest that the characteristic effect of auxin on cell multiplication is not linked to the activation of a K+ /H+ exchange mechanism at cell membrane level
Joux (Rhône). La mine de Cella
No full textLes sondages archéologiques réalisés en 2015 dans le réseau ancien situé Chez Henry, la mine de Cella citée dans les archives du Moyen Âge et de l’époque moderne, ont permis d’étudier une voie de roulage en bois découverte en 2014. Les résultats apportent des éléments d’interprétation complémentaires contribuant aux nombreuses hypothèses déjà établies auparavant sur le phasage de percement et d’exploitation de la mine. Les datations radiocarbones réalisées sur des charbons de bois provenant d..
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe 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
Effects of exogenous amino acids on the intracellular content of proline and other amino acids in Daucus carota cells
No full textThe effect of tryptophan on the biosynthesis of proline has been investigated. Cells of Daucus carota grown in B5 medium supplemented with 5x10 - 4 M tryptophan acquired the ability to grow in the presence of inhibitory concentrations of azetidine-2-carboxylic
acid, an analog of proline. When trp was added to carrot cell cultures at sub-growth inhibiting concentrations, overproduction of intracellular free proline was observed. An increase was also observed
for lys, his, ala, leu and phe. Likewise, the addition of asparagine, glutamic acid and phenylalanine to the medium stimulated the intracellular increase of free proline and other amino acids
"Closing the R&D Gap, Evaluating the Sources of R&D Spending"
No full textBoth spending and tax policies have been implemented in the United States with the goal of stimulating private sector research and development (R&D). Karier questions whether current R&D policy, especially the research and experimentation tax credit, can contribute to closing the gap between nondefense expenditures on R&D in the United States and such expenditures in other countries, such as Japan and Germany. He also explores possible changes to our current R&D policy to make it more effective.
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