1,720,959 research outputs found
Flavobacterium tibetense Phurbu & Lu & Xue & Tian & Pema & Ma & Xing 2019, SP. NOV.
No full textDESCRIPTION OF FLAVOBACTERIUM TIBETENSE SP. NOV. Flavobacterium tibetense (ti.bet.en′ se. N.L. neut. adj. tibetense pertaining to the Tibetan Plateau) Cells are Gram-stain-negative, non-motile, rod-shaped and occur as single or paired cells. Cells are 1.0–1.6 µm in length and 0.4–0.5 µm in width. Colonies are yellow and circular with entire margins on TSA plates. Growth occurs with 0– 3 % (w/v) NaCl (optimum 1 %), at 10–37 Ǫ C (optimum 30 Ǫ C) and at pH 6–9 (optimum pH 7). Unable to grow on TSA under anaerobic conditions. Oxidase and catalase reactions are positive. Negative for the following: citrate utilization, H 2 S production, indole production and glucose fermentation. Positive for hydrolysis of casein and Voges– Proskauer test. In API 20NE tests, positive for arginine dihydrolase, but negative for arabinose, mannose, N -acetylglucosamine, maltose, gluconate, adipic acid and malic acid. Can produce acid from aesculin. Positive for the enzyme activity of cystine arylamidase, weakly positive for esterase C4, esterase lipase C8 and chymotrypsin, but negative for a-glucosidase. The predominant polar lipid is PE. The predominant respiratory quinone is MK-6. The diamino acid in the cell-wall peptidoglycan is meso -diaminopimelic acid. *Summed features are groups of two or three fatty acids that cannot be separated by GLC using the MIDI system. Summed feature 3: C16: 1 Ɯ 7 c and/or C16: 1 Ɯ 6 c; summed feature 9: C16: 0 10-methyl and/or iso- C17: 1 Ɯ 9c. The type strain, YH5 T (= CICC 24247 T = KCTC 62174 T), was isolated from the YonghuCo wetland on the Tibetan Plateau. The genomic DNA G+C content of the type strain is 33.3 mol%.Published as part of Phurbu, Dorji, Lu, Hubin, Xue, Xiaofeng, Tian, Yanling, Pema, Yangzom, Ma, Chao & Xing, Peng, 2019, Flavobacterium tibetense sp. nov., isolated from a wetland, pp. 165-170 in International Journal of Systematic and Evolutionary Microbiology 69 (1) on pages 168-169, DOI: 10.1099/ijsem.0.003124, http://zenodo.org/record/604861
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
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
Cyclocybe suberebia R. L. Zhao & X. Y. Zhu 2023, sp. nov.
No full text<i>Cyclocybe suberebia</i> R.L. Zhao & X.Y. Zhu <i>sp. nov.</i> <p>Fungal Names No: 571268</p> <p>FoF number: 13981</p> <p>Figs 3A, B, 4</p> <p> <b>Diagnosis</b>. this species is characterized by its dark brown to light brown pileus. It differs from <i>C. erebia</i> in spore of size. It differs from <i>C. erebioides</i> in annulus, <i>C. erebioides</i> with a wide and complex membranous annulus, <i>C. suberebia</i> with a simple membranous annulus, and <i>C. erebioides</i> with clamp-connections, but <i>C. suberebia</i> clampless hyphae.</p> <p> Etymology: <i>suberebia</i>, from the Latin <i>sub</i> = near, referring to its similarity to <i>C. erebia</i>.</p> <p> <b>Description.</b> <i>Basidiomes</i> small. <i>Pileus</i> 22–37 mm in diam., broadly convex when young and plane when mature, not distinctly depressed or umbo, hygrophanous, viscid, glabrous, yellowish brown to brown, generally darker in the center and fading toward the margin, margin distinctly striate, not involute. <i>Context</i> thin, up to 1 mm, concolorous with pileus surface. <i>Lamellae</i> adnate or subdecurrent, thick, crowded, with series of 1–3 lamellulae, at first whitish, then light brown, edges with distinctly white. <i>Stipe</i> 41–53 × 2–3 mm, central, cylindrical, hollow, dry, fibrous, with annular zone, at first whitish, darkening with age or at touch to brown. <i>Annulus</i> single, white, membranous, persistent, upturned. <i>Odor</i> not distinctive. <i>Taste</i> indistinct.</p> <p> <i>Basidiospores</i> 9.4–11.1 × 4.5–5.6 μm, [x = 10.2 ± 0.5 × 5.1 ± 0.3, Q = 1.8–2.4, Q m = 2.0 ± 0.1, n =20], long ellipsoid, oblong, subellipsoid to subamygdaliform, smooth, thick-walled, some with oil-like droplets, no germ pore, brownish to brown. <i>Basidia</i> 22.4–27.4 × 5.8–8.2 μm, clavate, middle constrained, 1-, 2- to 3-spored, most 2-spored and without 4-spored, thin walled, hyaline. <i>Pleurocystidia</i> 49.4–60.5 × 8.0–13.9 μm, generally utriform, sometimes cylindrical, thin-walled, hyaline, numerous. <i>Cheilocystidia</i> 51.2–62.2 × 11.0–15.8 μm, mostly utriform, thin walled, hyaline. <i>Hymenophoral trama</i> subregular, consisting of 2.9–5.9 μm-wide hyphae. <i>Pileipellis</i> hymeniform and formed by vesicular to clavate elements, 21.7–29.1 × 8.7–15.2 μm. <i>Pileocystidia</i> not observed. <i>Caulocysidia</i> not observed. Clamp-connections absent.</p> <p> <b>Habitat, ecology and distribution.</b> Solitary or scattered on soil, often under conifers, known from Chongqing, China; from July to October.</p> <p> <b>Material examined.</b> China. Chongqing: Kaizhou Country, Xuebaoshan National Natural Reserve (31°35’17” N, 108°41’18” E), alt. 1350 m, 11 September 2021, collected by Xin-Yu Zhu, Ming-Zhe Zhang, Yang Liu. <i>ZRL20211502</i> (Holotype: HMAS 286977); China. Chongqing: Kaizhou Country, Xuebaoshan National Nature Reserve (31°35’17” N, 108°41’18” E), alt. 1350 m, 10 September 2021, collected by Xin-Yu Zhu, Ming-Zhe Zhang, Yang Liu. <i>ZRL20211500</i> (HMAS 286975); China. Chongqing: Kaizhou Country, XueBaoShan National Nature Reserve (31°35’17” N, 108°41’18” E), alt. 1350 m, 11 September 2021, collected by Xin-Yu Zhu, Ming-Zhe Zhang, Yang Liu. <i>ZRL20211501</i> (HMAS 286976); China. Chongqing: Kaizhou Country, XueBaoShan National Nature Reserve (31°35’17” N, 108°41’18” E), alt. 1350 m, 11 September 2021, collected by Xin-Yu Zhu, Ming-Zhe Zhang, Yang Liu. <i>ZRL20211520</i> (HMAS 286978).</p>Published as part of <i>Zhu, Xin-Yu, Nyima, Tenzin, Vizzini, Alfredo, He, Mao-Qiang, Phurbu, Dorji & Zhao, Rui- Lin, 2023, Two new species of Cyclocybe (Agaricales, Tubariaceae) from China, pp. 33-46 in Phytotaxa 620 (1)</i> on pages 39-40, DOI: 10.11646/phytotaxa.620.1.3, <a href="http://zenodo.org/record/10015455">http://zenodo.org/record/10015455</a>
Dispelling the Myths Behind First-author Citation Counts
Get PDFWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
Microbotryozyma lacustris sp. nov. (Basidiomycota, Ustilentylomataceae) and Cyberlindnera basumtsoensis sp. nov. (Ascomycota, Phaffomycetaceae), two novel yeasts isolated from freshwater Lake Basom Tso, China
No full textVolume: 126Start Page: 135End Page: 15
Cyclocybe dinggyensis R. L. Zhao & X. Y. Zhu 2023, sp. nov.
No full text<i>Cyclocybe dinggyensis</i> R.L. Zhao & X.Y. Zhu <i>sp. nov.</i> <p>Fungal Names No: 571269</p> <p>FoF number: 13982</p> <p>Figs 3C, D, 5</p> <p> <b>Diagnosis</b>. Basidioma slender. It differs from <i>C. erebia</i> in the number of spores, <i>C. erebia</i> is bisporic, <i>C. dinggyensis</i> is tetrasporic. It differs from <i>C. erebioides</i> in annulus, <i>C. erebioides</i> with a wide and complex membranous annulus, <i>C. dinggyensis</i> with a simple membranous annulus, and <i>C. erebioides</i> with clamp-connections, but <i>C. dinggyensis</i> clampless hyphae.</p> <p>Etymology: the epithet “dinggye” refers to Dinggyê County where the type specimen is from.</p> <p> <b>Description.</b> <i>Basidiomes</i> small. <i>Pileus</i> 20 mm in diam., broadly convex to convex, not distinctly depressed or umbo, hygrophanous, viscid, glabrous, brown to darker brown, generally darker in the center and almost brown in the margin, margin distinctly striate, not involute. <i>Context</i> thin, up to 1 mm, concolorous with pileus surface. <i>Lamellae</i> subdecurrent, thick, crowded, with series of 1–3 lamellulae, light brown. <i>Stipe</i> 43 × 4 mm, central, cylindrical, hollow, dry, fibrous, with annular zone, concolorous with pileus surface, daker at the base. <i>Annulus</i> single, concolorous with lamellae, membranous, persistent, upturned. <i>Odor</i> not distinctive. <i>Taste</i> indistinct.</p> <p> <i>Basidiospores</i> 7.4–9.2 × 3.6–5.2 μm, [x = 8.4 ± 0.4 × 4.4 ± 0.4, Q = 1.7–2.2, Q m = 1.9 ± 0.1, n =20], oblong, subellipsoid to subamygdaliform,smooth, thick-walled, some oil-like droplets, no germ pore, brownish to brown in. <i>Basidia</i> 22.4–35.6 × 6.2–8.8 μm, clavate, 4-spored, most middle constrained, thin walled, hyaline. <i>Pleurocystidia</i> 46.7–59.7 × 9.2–13.0 μm, generally utriform, sometimes cylindrical, thin-walled, hyaline, numerous. <i>Cheilocystidia</i> 26.7–42.7 × 7.3–13.2 μm, similar to pleurocystidia but lacking cylindrical, mostly utriform, thin walled, hyaline. <i>Hymenophoral trama</i> subregular, consisting of 3.0–7.0 μm-wide hyphae. <i>Pileipellis</i> hymeniform formed by vesicular to clavate elements, 11.2–23.6 × 6.7–11.1 μm. <i>Pileocystidia</i> not observed. <i>Caulocysidia</i> not observed. Clamp-connections absent.</p> <p> <b>Habitat, ecology and distribution.</b> Solitary on the ground, known from Tibet, China; from July to October.</p> <p> <b>Material examined.</b> China. Tibet: Shigatse, Dinggyê county (27°55’15” N, 87°21’37” E), alt. 3060 m, 29 July 2022, collected by Mao-Qiang He, Bin Cao, Jia-Xin Li. <i>ZRL20220414</i> (Holotype: HMAS 286979).</p>Published as part of <i>Zhu, Xin-Yu, Nyima, Tenzin, Vizzini, Alfredo, He, Mao-Qiang, Phurbu, Dorji & Zhao, Rui- Lin, 2023, Two new species of Cyclocybe (Agaricales, Tubariaceae) from China, pp. 33-46 in Phytotaxa 620 (1)</i> on pages 41-43, DOI: 10.11646/phytotaxa.620.1.3, <a href="http://zenodo.org/record/10015455">http://zenodo.org/record/10015455</a>
- …
