2,913 research outputs found
Platytibia ferruginea Ding
No full text<i>Platytibia ferruginea</i> Ding <p>(Figs. 16–26)</p> <p> <i>Platytibia ferruginea</i> Ding, 2006: 333 –334, fig. 175A–E.</p> <p> <b>Male genitalia.</b> Male pygofer subtriangular in lateral view, ventral side sinuate, apparently wider than dorsal, laterodorsal angle not produced, laterocaudal margin broadly expanded caudad in upper half followed by a plate-like process strongly produced at caudoventral angle (Figs 17, 19); in caudal aspect pygofer with a platelike process at each side of lateroventral margin (Figs 16, 18). Parameres rather broad, surpassing ventral side of anal segment (Fig. 16), contiguous in basal half, apices rounded and converging, laterally basad of apex expanded laterad, apices converging (Fig. 25). Aedeagus slender, slightly compressed laterally, broad at base, shortly distad of base slightly bent dorsad, apex strongly narrowing, subapex with flag-like flagellum reflected laterobasad, distally curved to right side, with basal spinose process curved to left, phallotreme subapical on dorsal side at base of flagellum (Figs 20, 22, 23). Genital diaphragm narrow, dorsal margin concave and membranous, medially sclerotized, pigmented, in lateral view with caudally directed process surpassing laterocaudal margin of pygofer (Figs 18, 19). Suspensorium long, articulated with aedeagus (Fig. 20), apparently compressed ventrocaudally, arms short and widely separated, stem nearly 3.0 times as long as arms, basal part narrowed (Fig. 21). Opening for parameres small, ventral margin evenly arched, lateral and anterior margins nearly straight (Fig. 18). Anal segment with two blunt, widely spaced processes (Fig. 24).</p> <p> <b>Material examined.</b> 1 male (macropterous), <b>China:</b> Hainan Province, Bawangling, 28.V.1983, coll. Yalin Zhang (NWAFU).</p> <p> <b>Remarks.</b> The original description of the genus, especially in the characters of the male genitalia, was rather deficient, the illustrations of the type species not exhibiting these particular configurations of the internal genitalia.</p> <p> <b>Distribution</b>. Known only from the type locality in southern China (Hainan Province).</p>Published as part of <i>Qin, Dao-Zheng & Zhang, Ya-Lin, 2009, A new species of Longtania Ding from China and redescription of the male genitalia of Platytibia ferruginea Ding (Hemiptera: Fulgoromorpha: Delphacidae), pp. 62-68 in Zootaxa 1979</i> on pages 66-68, DOI: <a href="http://zenodo.org/record/185232">10.5281/zenodo.185232</a>
FIGURES 1–4 in A new species of Amphinemura (Plecoptera: Nemouridae) from China
No full textFIGURES 1–4. Amphinemura hainana sp. nov. (male). 1. Wing, a. common; b. rare. 2. Head showing color pattern, a. common; b rare. 3. Pronotum, dorsal view. 4. Female terminalia.Published as part of Li, Weihai & Yang, Ding, 2008, A new species of Amphinemura (Plecoptera: Nemouridae) from China, pp. 65-68 in Zootaxa 1892 on page 66, DOI: 10.5281/zenodo.18436
Longtania Ding
No full text<i>Longtania</i> Ding <p> <i>Longtania</i> Ding, 2006: 446 –447. Type species. <i>Longtania picea</i> Ding, 2006, by original designation.</p> <p> <b>Diagnosis.</b> Small-sized, brownish delphacids. Head longer and narrower than pronotum (Fig. 1). Vertex longer than wide at base, anterior margin of vertex rounded projecting in front of eyes (Fig. 1), in profile meeting frons at nearly right angle (Fig. 3). Y-shaped carina with stem absent, submedian carinae uniting before apex of vertex (Fig. 1). Median carinae of frons simple (Fig. 2). Lateral carinae of pronotum attaining hind margin (Fig. 1). Calcar foliate, tectiform, with many black-tipped teeth on lateral margin. Male pygofer with diaphragm narrow, dorsal margin produced medially, truncate or emarginate dorsally (Fig. 8); dorsolateral apices of pygofer not expanded (Fig. 7). Parameres broadened distally with convergent apex (Fig. 15). Suspensorium strap-shaped (Fig. 10) and fused with aedeagal base on its dorsal side (Figs 9, 11, 12). Aedeagus tubular, armed with spines (Figs 9, 11, 12). Male anal segment ring-like, without processes (Fig 14).</p> <p> <b>Remarks.</b> The genus <i>Longtania</i> Ding is characterized by its long and apically rounded vertex, by its submedian carinae uniting before apex of vertex (Fig. 1), by its pronotum with lateral carinae attaining hind margin (Fig. 1), and by the characters of the male genitalia: dorsolateral apices of pygofer not expanded (Fig. 7), dorsocaudad directed process of the diaphragm (Fig. 8), aedeagus armed with spines (Figs 9, 11, 12), suspensorium fused with the dorsal base of the aedeagus (Figs 9, 11, 12) and parameres broadened distally with convergent apex (Fig. 15).</p> <p> <i>Longtania</i> belongs to a group of taxa including <i>Harmalia</i> Fennah (1969) and <i>Wuyia</i> Ding (1991), all characterized by the presence of short submedian carinae on the vertex. However, it differs from these genera mainly in the structures of the male genitalia: in <i>Longtania</i> the male pygofer lacks strongly produced dorsolateral angles; the suspensorium is rectangular, strap-shaped and fused with the base of the aedeagus (ring-like in <i>Harmalia</i> and rope-shaped in <i>Wuyia</i> and not fused with the aedeagus in either of these genera); diaphragm with mediodorsal process truncate or emarginate dorsally, without median longitudinal carina (roundly or angulately produced in these other genera and, in <i>Wuyia</i>, with median longitudinal carina dorsoventrally). <i>Longtania</i> also differs from <i>Wuyia</i> in having the parameres converging distally.</p> <p> At present only the subtribe Numatina Emeljanov (1993) has been formally defined within the Delphacini. All the other genera of Delphacini are held within the nominal subtribe Delphacina. Based on the fusion of the suspensorium to the dorsal base of the aedeagus, <i>Longtania</i> is here excluded from the subtribe Numatina in which the suspensorium is articulated with the base of aedeagus. It is therefore retained within the Delphacina. However, until the Chinese fauna is more comprehensively known and a more satisfactory subtribal classification is available, the subtribal placement of <i>Longtania</i> remains problematic.</p> <p> <b>Distribution.</b> The species of <i>Longtania</i> are currently known only from China (Yunnan and Hubei Provinces).</p>Published as part of <i>Qin, Dao-Zheng & Zhang, Ya-Lin, 2009, A new species of Longtania Ding from China and redescription of the male genitalia of Platytibia ferruginea Ding (Hemiptera: Fulgoromorpha: Delphacidae), pp. 62-68 in Zootaxa 1979</i> on page 63, DOI: <a href="http://zenodo.org/record/185232">10.5281/zenodo.185232</a>
Bibliometric cartography of information retrieval research by using co-word analysis
No full textThe aim of this study is to map the intellectual structure of the field of Information Retrieval (IR) during the period of 1987-1997. Co-word analysis was employed to reveal patterns and trends in the IR field by measuring the association strengths of terms representative of relevant publications or other texts produced in IR field. Data were collected from Science Citation Index (SCI) and Social Science Citation Index (SSCI) for the period of 1987-1997. In addition to the keywords added by the SCI and SSCI databases, other important keywords were extracted from titles and abstracts manually. These keywords were further standardized using vocabulary control tools. In order to trace the dynamic changes of the IR field, the whole 11-year period was further separated into two consecutive periods: 1987-1991 and 1992-1997. The results show that the IR field has some established research themes and it also changes rapidly to embrace new themes
Zingiber calcicola Y. H. Tan & H. B. Ding 2021, sp. nov.
No full textZingiber calcicola Y.H.Tan & H.B.Ding, sp. nov. (Figs. 1–2) Diagnosis: — Zingiber calcicola is similar to Z. nitens Newman (2015: 124) in having terminal inflorescence and similar labellum, but differs by its prominently plicate lamina, oblong (vs. triangular) and longer lateral staminodes (1.3–1.6 cm long vs. 0.2–0.6 cm long), elliptic lamina with the size of 13–19 × 4–6.5 cm (vs. narrowly elliptic lamina with the size of 18–25 × 2–3 cm) and dwarf habit (40–55 cm tall vs. 65–100 cm tall). Type: — CHINA. Yunnan Province: Mengla County, Huiwa village, 21°52′26″ N, 101°27′05″ E, elevation 805 m, 4 September 2020, H.B . Ding & X.D. Zeng T0566 (holotype: HITBC0057379!, isotype: HITBC0057382!). Perennial rhizomatous herbs, 40–55 cm tall, forming a loose clump, with 2–11 leafy shoots. Rhizomes to 3 cm in diam., horizontally elongated and creeping, yellowish brown (fresh rhizomes) to fuscous (drying rhizomes). Leafy shoots slender, with 6–11 leaves, basal ca. 1/3 part of pseudostem leafless; bladeless sheaths 1–3, reddish green, glabrous; leaf sheaths green, pubescent along the margin. Ligules 3–5 mm long, pubescent along the margin, apex truncate or emarginate; petiole 3–15 mm long, glabrous; lamina elliptic, 13–19 × 4–6.5 cm, apex acuminate to caudate, base obtuse, adaxially dark green and glabrous, abaxially pale green and glabrous, prominently plicate. Inflorescence terminal on leafy shoots, in upright position, peduncle sessile, spike cylindrical to fusiform, 5–8 cm long, ca. 1 cm broad, consisting of 4–8 bracts; bracts green, 2.5–3.8 × 1.3–2.0 cm, elliptic, glabrous, apex rounded, enclosing 2 flowers at the basal 3 bracts, 1 flower at the other upper bracts (occasionally only 1 flower in all bracts); bracteoles narrowly lanceolate, 1–1.7 cm long, involute, 0.4–0.6 cm wide when flattened, translucent green to white, glabrous, apex acute to obtuse. Flowers 6–6.5 cm long, much exserted beyond the bracts; calyx tubular, 1.8–2.2 cm long, ca. 3 mm in diam. at base, slightly swollen in the middle, ca. 4 mm in diam., membranaceous, semi-translucent cream-white, glabrous, with unilateral incision to 1 mm deep, with 3 teeth at apex; floral tube slender, 3.2–3.5 cm long, shallowly curved, widening gradually towards apex, cream-white and glabrous at base, brownish yellow and glabrous towards the apical part; dorsal corolla lobe lanceolate, 2.3–2.5 × 0.5–0.8 cm, yellow with semi-translucent veins, glabrous, apex attenuate; lateral corolla lobes narrowly oblong, 2.0–2.2 × 0.3–0.4 cm, yellow with semi-translucent veins, glabrous, apex attenuate; labellum oblong, 1.9–2.3 × 0.8–1.0 cm, adaxially dark maroon with small yellow dots and yellow patch in throat, with yellow stripes from base to center; abaxially yellow; glabrous, margins slightly deflexed, apex emarginate for 2 mm; lateral staminodes oblong, 1.3–1.6 × 0.2–0.3 cm, almost free from labellum, adaxially dark maroon with small yellow dots, abaxially yellow, glabrous, apex obtuse. Stamen 2.2–2.5 cm long with anther crest stretched, filament ca. 2 mm long, yellow, anther ca. 1.2 cm long (excluding anther crest) by ca. 3 mm broad, connective tissue yellow, glabrous; anther thecae ca. 1.2 cm long, dehiscing throughout entire length, pollen yellow; anther crest beak-shaped, 9–11 mm long when stretches, dark maroon with small yellow dots. Style filiform, creamwhite at base, pale yellow and thicken towards apex, glabrous; stigma extending to the tip of anther crest, funnelshaped, pale yellow, ostiole ciliate. Ovary cylindrical, slightly swollen in middle, trilocular, 3–4 × 3–4 mm, yellowish green, glabrous; epigynous glands two, linear, 4–6 mm long, pale yellow. Fruit ovoid to obovoid, 1.4–1.6 × 1–1.2 cm, with persistent calyx, pericarp semi-translucent, yellowish cream and red inside. Seeds ellipsoid, 4–5 × 3–4 mm, black, enveloped by the aril. Aril white, deep denticulate at apex, enveloping 1/3 of the length of the seeds. Phenology: —Flowering from August to September, fruiting from September to October. Distribution and habitat: — Zingiber calcicola is currently known only from its type locality, Mengla County, Yunnan, China. It grows on humus among rocks in tropical seasonal rain forest on limestone hills. Etymology: —The specific epithet ‘ calcicola ’, refers to the habitat in which the species occurs. Conservation status: —So far, Zingiber calcicola is currently known only from the type locality in south Yunnan. Although the habitat is under protected in mini nature reserve, but only one population with less than 500 mature individuals has been found, and the extent of occurrence (EOO) is less than 40 km 2, so we propose to classify it as ‘Critically Endangered’ (CR B1ab(iii,v)) (IUCN Standards and Petitions Committee 2019). Specimens examined (paratypes):— CHINA. Yunnan Province: Mengla County, Huiwa village, 21°52′26″ N, 101°27′08″ E, elevation 774 m, 4 September 2020, H.B . Ding & X.D. Zeng T0565 (HITBC); ibid., 21°52′31″ N, 101°27′00″ E, elevation 717 m, 4 September 2020, H.B . Ding & X.D. Zeng T0567 (HITBC); ibid., 21°52′27″ N, 101°27′07″ E, elevation 787 m, 6 September 2020, H.B . Ding & X.D. Zeng T0568 (HITBC, PE, KUN); ibid., 21°52′32.39″ N, 101°27′31.40″ E, elevation 856 m, 16 August 2021, H.B . Ding, B. Yang & X.D. Zeng T0951 (HITBC); ibid., 21°52′37.24″ N, 101°27′42.21″ E, elevation 717 m, 16 August 2021, H.B . Ding, B. Yang & X.D. Zeng T0952 (HITBC). Notes: Zingiber calcicola belongs to sect. Dymczewiczia due to the terminal inflorescence on the leafy shoot. It is also similar to Z. plicatum Škorničk. & Q.B.Nguy ễn in Leong-Škorničková et al. (2015: 211) and Z. sirindhorniae Triboun & Keeratikiet (2016: 2) in having terminal inflorescence and the limestone habitat, but it differs from the first in its smaller terminal inflorescence (5–8 × ca. 1 cm vs. 12–18 × 1.5–2.0 cm), yellow corolla lobes (vs. cream-white to pale yellow) and dark maroon labellum dotted with small yellow dots (vs. peach-purple to purple, with cream white or pale yellow lines). It differs from the second by its prominently plicate lamina (vs. non-plicate), truncate or emarginate ligule (vs. bilobed) and yellow corolla lobes (vs. white).Published as part of Ding, Hong-Bo, Quan, Dong-Li, Zeng, Xiao-Dong, Li, Jian-Wu & Tan, Yun-Hong, 2021, Zingiber calcicola (Zingiberaceae), a new species from a limestone area in south Yunnan, China, pp. 65-69 in Phytotaxa 525 (1) on pages 65-68, DOI: 10.11646/phytotaxa.525.1.8, http://zenodo.org/record/568185
Using open accessibility data for accessible travelling
No full textThis paper summarizes the research of using open accessibility data for accessible travelling. With the aim of addressing the gap between users’ special needs and complex accessibility barriers in real world, we proposed a personalized accessible travelling framework based on open accessibility data for people with mobility impairments. This research mainly investigates the use of Linked Open Data to establish a public linked open accessibility repository integrated from het-erogeneous data types, such as sensor data, transport data, building data as well as geographic data. Based on this repository and user preference data, we proposed accessible travelling frame-work to address the travelling problems faced for people with mobility impairment
Longevity of 68 Species of Drosophila
No full textAuthor Institution: Department of Biological Sciences, Bowling Green State UniversityAdult longevity of Drosophila is dependent upon many factors. In this study the differences in longevity caused by species, strain, sex, and mating status were examined for 68 species (89 strains) belonging to the D. obscura, melanogaster, and willistoni species groups. Both inter- and intra-specific differences in adult longevity were observed. In most species studied, females lived longer than males. In general, the longevity of unmated females exceeded that of mated ones, while the longevity of mated males was greater than that of unmated ones
FIGURE 3 in Rectoris longibarbus, a new styglophic labeonine species (Teleostei: Cyprinidae) from South China, with a note on the taxonomy of R. mutabilis (Lin 1933)
No full textFIGURE 3. Ventral view of oromandibular structures in: (A) R. longibarbus, IHB 200808006, holotype, 129.6 mm SL; Guangxi Province: Jinxi County: Zuo-Jiang. (B) R. mutabilis, IHB 8840955, 131.6 mm SL; Guizhou Province: Tongyun County: Yuang-Jiang; (C) R. mutabilis, IHB 81X0335, 76.6 mm SL; Guizhou Province: Yinjiang County: Yuang-Jiang; (D) R. posehensis, IHB 200808001, 121.9 mm SL; Guangxi Province: Jinxi County: Zuo-Jiang.Published as part of Zhu, Ding-Gui, Zhang, E & Lan, Jia-Hu, 2012, Rectoris longibarbus, a new styglophic labeonine species (Teleostei: Cyprinidae) from South China, with a note on the taxonomy of R. mutabilis (Lin 1933), pp. 55-68 in Zootaxa 3586 on page 59, DOI: 10.5281/zenodo.28310
First in the Nation in Education : Final Report,1984.
No full textThis report is one step in an ongoing process of change and is a plea for commitment for high standards in education in Iowa. Contains the final reports of the six subcommittees as adopted by the Excellence in Education Task Force, and the five recommendations made by the Task Force
Determinants of spontaneous surface antigen loss in hepatitis B e antigen-negative patients with a low viral load
No full textLoss of hepatitis B surface antigen (HBsAg) usually indicates the cure of hepatitis B virus (HBV) infection. In spontaneous hepatitis B e antigen (HBeAg) seroconverters, lower serum HBsAg and HBV DNA levels have been shown to be associated with HBsAg loss over time. However, little is known about their impacts on HBsAg loss in HBeAg-negative patients with limited viral replication. A total of 688 HBeAg-negative patients with baseline serum HBV DNA levels <2000 IU/mL were enrolled in Taiwan. The relationships of HBsAg and HBV DNA levels with subsequent HBsAg loss were investigated. In a mean follow-up of 11.6 years, the average annual rate of HBsAg loss was 1.6%. Baseline HBsAg and HBV DNA levels were inversely associated with subsequent HBsAg loss. When compared to patients who had HBsAg levels >1000 IU/mL, the rates of HBsAg loss were significantly higher in patients with HBsAg levels of 100-999, 10-99, and <10 IU/mL, with hazard ratios of 2.5 (95% confidence interval [CI], 1.6-4.0), 2.8 (95% CI, 1.6-5.0), and 13.2 (95% CI, 8.1-21.5), respectively. Multivariate analysis showed that HBsAg level, but not HBV DNA, remained as an independent factor. The adjusted hazard ratio of HBsAg loss was 13.2 (95% CI, 7.8-22.1) for HBsAg level <10 versus =1000 IU/mL. When compared to HBV DNA level by receiver operating characteristic curve analysis, HBsAg level served as a better predictor of both 5-year and 10-year HBsAg loss. Conclusion: In HBeAg-negative patients with HBV genotype B or C infection who have HBV DNA level <2000 IU/mL, HBsAg level <10 IU/mL is the strongest predictor of HBsAg loss. (HEPATOLOGY 2012;55:6876
- …
