1,720,960 research outputs found
Animal diversity, 4th Ed./ Cleveland P. Hickman, Jr. ; (et al)
xvi, 460 hal. : ill.; 27 cm
Animal diversity, 4th Ed./ Cleveland P. Hickman, Jr. ; (et al)
xvi, 460 hal. : ill.; 27 cm
TRANSFORMATION REACTIONS AND SPONTANEOUS LABELLING OF IODOPHENOLS DURING THIN-LAYER CHROMATOGRAPHY OF RADIOIODINE <sup>125</sup>I
Binding of Inorganic Iodide to the Plasma Proteins of Teleost Fishes
The natural binding of inorganic iodide by plasma proteins was studied in 10 freshwater teleost fishes, 16 marine teleost fishes, 3 elasmobranchs, 1 amphibian, 1 reptile, 1 bird, 2 mammals, and 2 arthropods. Of these, significant binding existed only in species of the order Clupeiformes including Esox lucius (average 80.9% of plasma inorganic iodide was protein-bound at 20 C), Coregonus clupeaformis (average 80.3% bound), Salmo gairdneri (average 84.3% bound), and Thymallus arcticus (average 81.0% bound). Significant binding was not found in fish of the orders Cypriniformes, Perciformes, Pleuronectiformes, Batrachoidiformes, Gadiformes, Squaliformes, Chimaeriformes, and Rajiformes. Esox lucius and C. clupeaformis showed a small seasonal variation in binding capacity. The plasma of male fish bound significantly more iodide than did the plasma of female fish.Inorganic iodide was found to bind with a plasma albumin-like protein. The binding sites were presumably free cationic groups of basic amino acid residues on the protein molecules. Iodide binding was inhibited by NO3−, SCN−, ClO4−, and CCl3COO−, but not affected by thiourea, thiouracil, and other halide ions. Binding energy was weak in both E. lucius (−5.98 Kcal/mole) and C. clupeaformis (−6.08 Kcal/mole). </jats:p
Going Beyond Counting First Authors in Author Co-citation Analysis
The 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
The Effect of Physical Conditioning on the Metabolism of Lactate, Phosphate, and Glucose in Rainbow Trout, <i>Salmo gairdneri</i>
Physiological effects of physical conditioning to water current were studied on three groups of [Formula: see text]-year-old rainbow trout, Salmo gairdneri, acclimated to 4 C. Group one (control) was raised in still water. Groups two and three were conditioned to water velocities of 20 cm/sec and 40 cm/sec, respectively, for 16 days before sampling. Muscle and plasma samples were collected before exercise and four times during subjection to 15 min of forced swimming at 53.4 cm/sec and eight times during a 24-hr recovery period. Conditioning significantly delayed the point of fatigue during forced exercise: the unconditioned fish were fatigued after about 5 min swimming, group two after about 10 min swimming, and group three at about 15 min.Physically conditioned trout showed significantly higher muscle and plasma lactate levels when fatigued, and more rapid removal of lactate from muscle and plasma during recovery from fatigue, than unconditioned trout. Exercise resulted in parallel oscillating concentration fluctuations of tissue phosphate and significant increases in concentrations of plasma phosphate in both conditioned and unconditioned fish. Plasma glucose showed no significant change during exercise but rose slightly during the recovery of all groups. </jats:p
Variations on the Author
“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
We 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
Integrated principles of zoology / Cleveland P. Hickman, Jr., Larry S. Roberts, Frances M. Hickman
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