1,720,959 research outputs found
FIGURE 3 in Gastrointestinal Nematodes of Laudakia nupta nupta (Sauria: Agamidae) from Iran with Descriptions of Two New Species (Oxyuridea: Pharyngodonidae) and comments on the diagnostic features of Parapharyngodon and Thelandros
No full textFIGURE 3. Female Parapharyngodon thulini sp. nov.: A. General lateral view; B. En face view; C. Anterior end of body; D. Vulva, lateral view; E. Posterior end, lateral view; F. Egg. Scale bars = 10 µm (B), 15 (C), 50 (F), 200 (D), 1000 (A).Published as part of Rahimian, Hassan, Pazoki, Samaneh & Habashi, Sima Abbasi, 2014, Gastrointestinal Nematodes of Laudakia nupta nupta (Sauria: Agamidae) from Iran with Descriptions of Two New Species (Oxyuridea: Pharyngodonidae) and comments on the diagnostic features of Parapharyngodon and Thelandros, pp. 51-82 in Zootaxa 3852 (1) on page 54, DOI: 10.11646/zootaxa.3852.1.2, http://zenodo.org/record/28696
A new species of the Spirobranchus kraussii - complex (Annelida, Serpulidae) from the Persian Gulf and Gulf of Oman
No full textPazoki, Samaneh, Rahimian, Hassan, Struck, Torsten H., Katouzian, Ahmad R., Kupriyanova, Elena K. (2020): A new species of the Spirobranchus kraussii - complex (Annelida, Serpulidae) from the Persian Gulf and Gulf of Oman. Zootaxa 4748 (3): 401-430, DOI: 10.11646/zootaxa.4748.3.
FIGURE 10 in A new species of the Spirobranchus kraussii - complex (Annelida, Serpulidae) from the Persian Gulf and Gulf of Oman
No full textFIGURE 10. BI tree of 11 taxa of the genus Spirobranchus based on concatenated fragments of nuclear 18S and mitochondrial Cyt-b nucleotide sequences for 39 specimens, 1325 bp long.Published as part of Pazoki, Samaneh, Rahimian, Hassan, Struck, Torsten H., Katouzian, Ahmad R. & Kupriyanova, Elena K., 2020, A new species of the Spirobranchus kraussii - complex (Annelida, Serpulidae) from the Persian Gulf and Gulf of Oman, pp. 401-430 in Zootaxa 4748 (3) on page 417, DOI: 10.11646/zootaxa.4748.3.1, http://zenodo.org/record/370097
FIGURE 8 in A new species of the Spirobranchus kraussii - complex (Annelida, Serpulidae) from the Persian Gulf and Gulf of Oman
No full textFIGURE 8. BI tree of 15 taxa of the genus Spirobranchus based on 18S dataset for 52 specimens and 1025 bp long. In all trees, two specimens of Galeolaria were used as outgroup. Bayesian posterior probabilities ≥ 0.9 are indicated on branches of all BI trees.Published as part of Pazoki, Samaneh, Rahimian, Hassan, Struck, Torsten H., Katouzian, Ahmad R. & Kupriyanova, Elena K., 2020, A new species of the Spirobranchus kraussii - complex (Annelida, Serpulidae) from the Persian Gulf and Gulf of Oman, pp. 401-430 in Zootaxa 4748 (3) on page 415, DOI: 10.11646/zootaxa.4748.3.1, http://zenodo.org/record/370097
Parapharyngodon thulini Rahimian, Pazoki & Habashi, 2014, sp. nov.
No full textParapharyngodon thulini sp. nov. Figs. 2–4 General: Very robust, white nematodes, with prominent annulations from cephalic extremity to posterior end. Excretory pore posterior to bulb. Male (based on holotype and 9 paratypes; mean ± SD [range]): Body 2.17 ± 0.42 mm (1.87–3.31 mm) long, 225 ± 30 (178–271) wide at level of excretory pore. Head well marked-off from body proper; cephalic extremity with three cuticular membranes; two amphids immediately next to the mouth opening (Fig. 4 A). Cuticular annulations approximately 15 µm wide, more prominent in both anterior and posterior regions of body. Oesophageal corpus 504 ± 61 (371–578) long; isthmus 26 ± 5 (19–35); bulb 91 ± 6 (83–103) long, 105 ± 10 (85–117) wide. Nerve ring and excretory pore 144 ± 15 (124–178) and 776 ± 78 (654–865) from anterior end, respectively. Lateral alae originate 473 ± 42 (395–529) from anterior end, at level of isthmus, rounded at level of genital cone, terminate approximately 96 ± 27 (56–144) from tip of genital cone, narrow anteriorly, enlarged to form broad vanes in cloacal region; maximum width 106 ± 22 (65–133). Three pairs of caudal papillae: precloacal (Fig. 4 D), postcloacal (Fig. 4 C) and the last pair fusing to form common base with two prominent sessile organs at tip; 47 ± 8 (38–59) from tip of tail filament (Fig. 4 B). Two subsurface structures at tip of well-developed genital cone (Fig. 4 E). Caudal alae absent. Anterior cloacal lip well developed, extends between 2 precloacal papillae, comprising 2 symmetrical pairs of cuticular lips in tandem covering genital cone anteriorly; anterior pair overlies base of posterior pair; tip of anterior pair serrate; posterior pair smooth; central, cuticular and serrate process located anterior to bilobed posterior cloacal lip. Posterior cloacal lip, opening to spicular pouch, bilobed. Spicule well sclerotized, 89 ± 9 (71–101) long, straight, pointed. Tail filament (caudal appendage) 81 ± 9 (68–94) long. Female (based on allotype and 9 paratypes; mean ± SD [range]): Body 4.01 ± 0.43 mm (3.53–4.54 mm) long, 469 ± 114 (325–617) wide at level of vulva. Cephalic extremity flattened in lateral view; mouthsubtriangular surrounded by 6 prominent spherical processes, with circular ridge around periphery of each (Fig. 4 F, G). Cuticle with annulations approximately 27 µm wide. Oesophageal corpus 791 ± 118 (546–920); isthmus 40 ± 5 (33–48); bulb 152 ± 15 (130–179) long, 185 ± 23 (160–229) wide. Nerve ring, excretory pore, and vulva 150 ± 25 (96–186), 1.22 ± 0.12 mm (1.06–1.36 mm), and 2.21 ± 0.23 mm (1.87–2.52 mm) from anterior end of body, respectively. Ovaries reach level of oesophageal bulb, do not form coils around oesophagus. Vulva in middle of body; pre- and postvulvar cuticle protrudes to varying degrees in different specimens. Body terminates in tail spike, 115 ± 23 (66–146) long. Eggs oval, 107 ± 11 (91–121) long, 65 ± 5 (57–71) wide, slightly flattened on one side, possessing subterminal operculum.Published as part of Rahimian, Hassan, Pazoki, Samaneh & Habashi, Sima Abbasi, 2014, Gastrointestinal Nematodes of Laudakia nupta nupta (Sauria: Agamidae) from Iran with Descriptions of Two New Species (Oxyuridea: Pharyngodonidae) and comments on the diagnostic features of Parapharyngodon and Thelandros, pp. 51-82 in Zootaxa 3852 (1) on page 56, DOI: 10.11646/zootaxa.3852.1.2, http://zenodo.org/record/28696
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
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
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe 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
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe 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
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