175,179 research outputs found
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
Lyophyllum pallidofumosum Y. H. Ma, W. M. Chen & Y. C. Zhao 2022, sp. nov.
No full textLyophyllum pallidofumosum Y. H. Ma, W. M. Chen & Y. C. Zhao sp. nov. (Figs. 1A, 3) MycoBank: MB 844903 Etymology: — pallidofumosum, refers to the morphological similarity of the new species to L. fumosum. Diagnosis:— Lyophyllum pallidofumosum differs from the other species of the L. decastes complex by a greyish orange pileus surface, margin with waves when old; globose to subglobose basidiospores (4.5–5.6 × 4.3–5.4 µm), clavate basidia (25–34 × 7–9 µm); occurring in a mixed forest dominated by Pinus yunnanensis, Pinus armandi, and Quercus fabrei; and the highest growth rate on the YPD medium,. Holotype:— CHINA, Yunnan Province, Xuanwei City, Reshui Town, in a mixed forest, 25°58′17″ N, 103°44′50″ E, elev. 2344m, 09 September 2021, Yuanhao Ma, Weimin Chen, Ping Liu, 21rs0242 (HKAS 124190) Description:—pileus 20–60 mm in diam., Pileus shape convex and margin involute when young, applanate, margin waves when old. Pileus colour slightly desaturated orange (5B3–5), greyish orange (6B5), oak brown (5D5–6). Lamellae adnate or subdecurrent. Lamellae colour white (5A1) to light greyish orange (5B2). Context white to whitish. Stipe cylindrical slightly enlarged towards base, central, solid, tough in texture, 30–80 × 8–15 mm. Stipe colour white (5A1) to light greyish orange (5B2). Basidiospores hyaline, globose to subglobose, smooth, with a single large oil-drop and a small apiculus, (4.26–) 4.55–5.54 (–5.76) × (4.15–) 4.30–5.36 (–5.57) µm, (m/n/p=113/6/2, l m =5.06 ± 0.31µm, w m =4.83 ±0.31µm), Q= (1.00–) 1.01–1.11 (–1.12), Q m =1.05 ±0.32. Basidia 4-spored, clavate, sometimes ventricose, (24.10–) 25.53–33.50 (–35.36) × (6.78–) 7.09–8.78 (–9.63) µm, l m =29.08 ± 2.31µm, w m =7.89 ±0.55µm, Q= (2.93–) 3.15–4.24 (–4.44), Q m =3.70 ±0.34; sterigmata 1.77–3.87 µm long. Some with clamp connections. Lamellae without cheilocystidia and pleurocystidia. Colonies 43–45 mm radius after 24 d at 22℃ in the dark on YPD, white, downy to cottony with loose aerial hyphae; some with clamp connections. Habitat:—solitary, gregarious or cespitose on the ground as saprobic in a mixed forest dominated by Pinus yunnanensis, Pinus armandi, and Quercus fabrei. Additional specimens examined:— CHINA, Yunnan Province, Xuanwei City, Reshui Town, in a mixed forest, 25°58′17″ N, 103°44′50″ E, elev. 2344m, 24 July 2019, YAASM6138 (HKAS 124189, Paratype); ibid., Shangri-La County, 16 October 2020, YAASM6215; ibid., 26 July 2006, yang 4742 (HKAS 50539); ibid., Lanping County, Jinding Town, 15 October 2011, zhao 1334 (HKAS 74287). Ex-type: YAASM6628 and YAASM6629, isolated from the inner tissues of two basidiomata. Ex-type sequences:— YAASM6628/HKAS124190a = LSU: ON834576, ITS: ON680829; YAASM6629/ HKAS124190b = LSU: ON834577, ITS: ON680830.Published as part of Ma, Yuanhao, Liu, Ping, Zhao, Ziyue, Chen, Weimin & Zhao, Yongchang, 2022, Lyophyllum pallidofumosum sp. nov. (Lyophyllaceae, Agaricales), from southwestern China, pp. 173-183 in Phytotaxa 576 (2) on page 178, DOI: 10.11646/phytotaxa.576.2.3, http://zenodo.org/record/746126
Macrobrachium tenuipes Zhu & Chen & Zheng & Chen & Guo 2020, sp. nov.
No full textMacrobrachium tenuipes sp. nov. urn:lsid:zoobank.org:act: 8E619D49-C101-44C5-8205-BAA3097E0CB2Published as part of Zhu, Xiao-Ping, Chen, Qing-Hua, Zheng, Xiao-Zhuang, Chen, Wen-Jian & Guo, Zhao-Liang, 2020, Macrobrachium tenuipes, a new stygophile freshwater prawn specie (Crustacea: Caridea: Palaemonidae) from a karst cave of Guangxi, southwestern China, pp. 511-529 in Zootaxa 4759 (4) on page 512, DOI: 10.11646/zootaxa.4759.4.3, http://zenodo.org/record/374102
Draconarius baibaensis Li & Zhao & Chen & Wu & Li 2019, sp. n.
No full textDraconarius baibaensis Z. Zhao & S. Li, sp. n. Figs 1, 8 Type material. Holotype ♀ (IZCAS-Ar39616): Baiba Township (N29.79867º, E93.84720º, 3191 m), Bayi County, Nyingchi City, Tibet, China, 31. VII. 2012, Z.Y. Yao and Z. Zhao leg. Etymology. The specific name refers to the type locality, Baiba Township; adjective. Diagnosis. Draconarius baibaensis sp. n. is most similar to D. altissimus (Hu, 2001). The epigyne of both species have a small atrium located posteriorly, and the epigynal teeth are pointed at the end, with spermathecal heads long and thin. However, the two species differ by the location of the epigynal teeth (medially in D. baibaensis sp. n. in Fig. 1A and posteriorly in D. altissimus in fig. 43.1 in Hu 2001 and fig. 112A in Zhu et al. 2017) and the shape of the posterior margin of the atrium (rectangular in D. baibaensis sp. n. in Fig. 1A and trapezoidal in D. altissimus in fig. 43.1 in Hu 2001 and fig. 112A in Zhu et al. 2017). Description. Female (IZCAS-Ar39616). Cephalothorax brown. The clypeus, endites, labium darker than carapace but colour of sternum and legs the same as carapace. Abdomen light-brown, covered by gray hairs. The colour of spinnerets same as carapace. Total length 11.29. Carapace 5.20 long, 3.61 wide. Abdomen 6.09 long, 3.96 wide. Eye sizes and interdistances: AME 0.12, ALE 0.21, PME 0.15, PLE 0.18; AME–AME 0.12, AME–ALE 0.11, AME–PME 0.13, ALE–PLE 0, PME–PME 0.14, PME–PLE 0.04. Leg measurements: I 15.39 (4.84, 4.99, 3.36, 2.20); II 13.86 (4.18, 4.49, 3.21, 1.98); III 12.78 (3.91, 3.80, 3.16, 1.91); IV 16.74 (4.97, 5.04, 4.49, 2.24). Epigyne: subequal to 2 times wider than long with 2 triangular teeth, pointed at end, medially situated and widely separated, hoods distinct, atrium small and located posteriorly, posterior margin of atrium 4 times wider than long; spermathecae 1.5 times longer than wide, anteriorly wider than posteriorly, spermathecal heads long and thin, originating medially from the spermathecae; the width of fertilization ducts subequal to its length (Fig. 1 A–B). Male. Unknown. Distribution. Known only from Tibet, China (Fig. 8).Published as part of Li, Bing, Zhao, Zhe, Chen, Haifeng, Wu, Zhiyan & Li, Shuqiang, 2019, Four new species of the genus Draconarius Ovtchinnikov, 1999 (Araneae, Agelenidae) from the Tibetan Plateau, China, pp. 141-154 in Zootaxa 4648 (1) on page 143, DOI: 10.11646/zootaxa.4648.1.7, http://zenodo.org/record/335395
Nanoimprint lithography for planar chiral photonic meta-materials
No full textRoom temperature nanoimprint lithography has successfully been applied to the fabrication of planar chiral photonic meta-materials. For dielectric chiral structures a single layer of thick HSQ was used while for metallic chiral structures a bi-layer technique using PMMA/hydrogen silsequioxane (HSQ) was applied. The polarization conversion capabilities of planar chiral structures imprinted in dielectric materials have experimentally been observed. This indicates that the developed processes in this work have the prospect of manufacturing planar photonic meta media in high volume at low cost
Myittana (Benglebra) weiningensis Zhao, Luo & Chen 2023, sp. nov.
No full textMyittana (Benglebra) weiningensis Zhao, Luo & Chen sp. nov. Figs 1–12 Body length: male: 5.45–5.62 mm. (n=6) Coloration. Body yellowish white. Crown yellowish-white, with two longitudinal orange-red stripes extending from the top of head backwards to the lateral margin of the scutellum, which becomes distinctly lighter from basal margin of scutellum (Figs 1, 3). Face yellowish white, eyes black (Figs 4, 5). Pronotum with two additional yellowish stripes on each side near lateral margin (Fig. 3). Forewing with dark-brown longitudinal stripe on commissural margin, extended along entire length (Fig. 1). Costal margin with irregular light brown spot near R 2+3, outer cells and medial area of third cell with another dark brown spot (Figs 1, 3). Legs yellowish white. Head and thorax. Anterior margin of crown narrowly convex, median length slightly less than width between the eyes (1: 1.02) (Figs 2, 4), apex of head truncate in lateral view, with face concave (Fig. 4). Width of face including eyes approximately 1.2 times length (1:0.85) (Fig. 5). Pronotum width slightly wider than width of head including eyes (1.16:1), length longer than mid-length of crown (1.46: 1) (Fig. 3); Forewing length is about 5 times as long as the widest part (4.94:1) (Figs 1, 2). Male genitalia. Pygofer very long and narrow in lateral view, with many long setae in distal half, lamellar projection arising from ventral margin near apical third giving rise to long, thick spine extended distad, tapering toward apex (Figs 6, 7). Valve triangular, subgenital plate broad in middle and bluntly rounded at tip (Fig. 12). Style slender, with finger-like process at tip extended obliquely posterolaterad, subterminal part with elongate setae on inner side (Fig. 11). Connective V-shaped, outer margin of base slightly flat, apex cylindrical (Fig. 8). Aedeagus sub-tubular, robust at base, slightly narrower at middle, tapering at tip (Figs 8–10). Material examined. HOLOTYPE: ♁, China: Guizhou, Bijie City, Weining County, Caohai National Nature Reserve (26°86’N, 104°24’E), 2 August 2017, Xiang-Sheng Chen and Qiang Luo; paratypes: 5♁♁, China: Guizhou, Bijie City, Weining County, Caohai National Nature Reserve (26°86’N, 104°24’E), 2 August 2017, XiangSheng Chen and Qiang Luo. Distribution. China (Guizhou). Host Plant. Bamboo. Etymology. The specific epithet refers to the type locality, Weining County, Guizhou Province. Remarks. The new species is most similar to M. (B.) ventrospina (Chen & Yang, 2007), but the differences are as follows: (1) forewings of the new species with a dark-brown longitudinal stripe on the commissural margin (Fig. 1), the latter lacks the stripe on the forewing; (2) male pygofer of the new species has a lamellar projection and a long spine (Figs 6, 7), the latter has a short, broad spine; (3) style of the new species has a single finger-shaped process at the tip (Fig. 11), the latter has two processes.Published as part of Zhao, Yong-Tao, Luo, Qiang, Yang, Lin, Long, Jian-Kun, Chang, Zhi-Min & Chen, Xiang-Sheng, 2023, Two new species of the bamboo-feeding subgenus Myittana (Benglebra) (Hemiptera Cicadellidae: Deltocephalinae) from China, pp. 82-88 in Zootaxa 5244 (1) on pages 83-85, DOI: 10.11646/zootaxa.5244.1.7, http://zenodo.org/record/764585
Vappolotes ganlongensis Li & Zhao & Chen & Chen & Wu & Li 2019, sp. n.
No full textVappolotes ganlongensis Zhao et S. Li, sp. n. Figs 2, 3, 5 Type material. Holotype: ♂ (IZCAS-Ar39637, ZZ550): Chenjia Cave (N28.38187º, E108.67368º, 792 m), Ganlong Town, Miao Autonomous County of Songtao, Guizhou Province, China, 9.III.2013, H.F. Zhao and J.C. Liu leg. Paratypes: 7♀♀ (IZCAS-Ar39638–Ar39644, ZZ550): same data as holotype. Etymology. The specific name refers to the type locality, Ganlong Town; adjective. Diagnosis. Vappolotes ganlongensis sp. n. can be distinguished from V. jianpingensis sp. n. by the following: the posterior margin of the atrium is concave medially (Fig. 3A), whereas it is arciform in V. jianpingensis sp. n. (Fig. 4A); the copulatory ducts are large, about 2 times larger as the spermathecae (Fig. 3B), whereas the copulatory ducts are nearly the same size as the spermathecae in V. jianpingensis sp. n. (Fig. 4B). Description. Male. Clypeus brown, abdomen gray, other parts are the same color as for the genus (Fig. 3C). Total length 5.76. Carapace 3.04 long, 2.19 wide. Abdomen 2.72 long, 1.75 wide. Eye sizes and interdistances: AME 0.11, ALE 0.16, PME 0.15, PLE 0.16; AME–AME 0.04, AME–ALE 0.02, AME–PME 0.04, ALE–PLE 0, PME–PME 0.06, PME–PLE 0.05. Leg measurements: I 12.24 (3.15, 4.06, 2.94, 2.09); II 11.52 (3.19, 3.52, 2.93, 1.88); III 11.11 (2.67, 3.46, 3.05, 1.93); IV 14.41 (3.71, 4.39, 4.12, 2.19). Palp: Femur 4.5 times longer than wide; patella with a long anterodorsal macroseta, almost 2.3 times longer than the patella, patellar apophysis about 1/2 the patella length, with blunt tip; tibia and base of cymbium with long dorsal and prolateral macrosetae; VTA and RTA spine-shaped, VTA about 3 times longer than RTA, extending beyond the distal margin of the tibia; cymbium 2.2 times longer than bulb, cymbial furrow short, less than 1/2 the cymbial length; dorsal apophysis of the conductor pointed, and the large lamella of conductor spoon-shaped; tegular apophysis shorter than 1/2 the cymbial furrow, with bifurcated tip; embolus originates around the 6 o’clock position (Fig. 2 A–C). Female (IZCAS-Ar39638). Same color as male except abdomen yellow-brown (Fig. 3D, E). Total length 5.95. Carapace 2.56 long, 1.81 wide. Abdomen 3.39 long, 2.34 wide. Eye sizes and interdistances: AME 0.10, ALE 0.14, PME 0.12, PLE 0.13; AME–AME 0.05, AME–ALE 0.03, AME–PME 0.05, ALE–PLE 0, PME–PME 0.07, PME–PLE 0.06. Leg measurements: I 9.04 (2.59, 2.89, 2.11, 1.45); II 8.77 (2.54, 2.78, 2.06, 1.39); III 8.68 (2.41, 2.72, 2.24, 1.31); IV 11.98 (3.35, 3.67, 3.31, 1.65). Epigynum: about 1.7 times wider than long; atrium occupying 3/4 of epigynum, length equal to width, posterior lateral margin of atrium about 1/2 the width of the lateral margin, concave medially; copulatory ducts large, about 3 times larger than spermathecae; spermathecae small, occupying 1/4 of epigynum, over 2 times longer than wide; fertilization ducts 2 times longer than wide (Fig. 3A, B). Variation. Total length of females 5.72–5.96 (n=7). Distribution. Guizhou, China (Fig. 5).Published as part of Li, Bing, Zhao, Zhe, Chen, Yuanxue, Chen, Haifeng, Wu, Zhiyan & Li, Shuqiang, 2019, Vappolotes, a new genus of coelotine spiders (Araneae, Agelenidae) from Guizhou, China, pp. 434-442 in Zootaxa 4701 (5) on pages 436-437, DOI: 10.11646/zootaxa.4701.5.3, http://zenodo.org/record/355938
Amiota reikae Zhao & Xu & Jiang & He & Chen 2013, SP. NOV.
No full text<i>AMIOTA REIKAE</i> XU & CHEN SP. NOV. (FIG. 1) <p> <i>Specimens examined:</i> Holotype male (SCAU 121071) and five male paratypes (SCAU 121072–121076), China, Mengla, Xishuangbanna, Yunnan, 600 m a.s.l., 17, 18 April 2007, HW Chen and JJ Gao.</p> <p> <i>Etymology:</i> Patronym, in honor of Ms Lihua Wang (SCAU), who helped Hongwei Chen in the study of drosophlids.</p> <p> <i>Diagnosis:</i> This species is similar to <i>A. apodemata</i> in the male terminalia, can be distinguished from the latter by having the paramere broad, slightly bifurcated dorsad, with a strongly sclerotized, arcuate process basally (pr; Fig. 1C, D).</p> <p> <i>Description:</i> Only the important characters are listed here; see Chen & Toda (1998a) for the rest (common to the <i>apodemata</i> group). Male terminalia: epandrium not constricted mid-dorsally, with about nine setae near posterior to ventral margins on each side of the body (Fig. 1A). Surstylus lacking pubescence, with finger-like process at posteroventral corner, about seven prensisetae on distal margin, and a few stout, spine-like setae on inner surface (Fig. 1B). Hypandrium narrowly separated into two lateral arches at middle of anterior portion (Fig. 1C, D). Gonopods sclerotized and slender (Fig. 1D). Parameres subbasally fused to each other, with numerous pits along outer margins (Fig. 1C, D). Aedeagus single, somewhat sclerotized, spoon-shaped lobe, basally fused to apodeme (Fig. 1C, D). Aedeagal apodeme nearly straight (Fig. 1C, D). Female: unknown.</p> <p> <i>Measurements:</i> Body length, BL = 2.46 mm in the holotype (range in five male paratypes: 2.44–2.60 mm), THL = 1.32 mm (1.20–1.36 mm), WL = 2.28 mm (2.00– 2.32 mm), WW = 1.04 mm (0.92–1.08 mm), arb = 5/3 (4/3–5/3), avd = 0.89 (0.71–0.90), adf = 2.25 (1.40– 2.20), flw = 2.75 (2.00–2.40), FW/HW = 0.44 (0.36– 0.51), ch/o = 0.12 (0.07–0.15), prorb = 0.92 (0.69–0.91), rcorb = 0.83 (0.64–0.77), orbito = 1.60 (1.60–2.30), vb = 0.50 (0.38–0.43), dc1 = 0.41 (0.38–0.52), presct1 = 0.45 (0.38–0.50), sct1 = 1.28 (1.21–1.38), sterno = 0.79 (0.64–0.86), dcp = 0.25 (0.22–0.29), sct1p = 0.89 (0.88– 1.33), C = 1.43 (1.32–1.77), 4c = 1.76 (1.61–1.76), 4v = 2.89 (2.35–2.67), 5x = 1.75 (1.38–1.88), ac = 5.00 (5.00– 7.25), M = 0.82 (0.60–0.76), C3F = 0.81 (0.73–0.84).</p> <p> <i>Distribution:</i> China (Yunnan).</p>Published as part of <i>Zhao, Feng, Xu, Xiaoyang, Jiang, Jianjun, He, Xiaofang & Chen, Hongwei, 2013, Molecular phylogenetic analysis of the Amiota apodemata and Amiota sinuata species groups (Diptera: Drosophilidae), with descriptions of four new species, pp. 849-858 in Zoological Journal of the Linnean Society 168 (4)</i> on pages 851-852, DOI: 10.1111/zoj.12043, <a href="http://zenodo.org/record/5285870">http://zenodo.org/record/5285870</a>
Crater counting and mare basalt unit data for Zhao et al. 2023 Icarus-PIV
No full textShapefiles of Zhao et al. (2023) mare age units and crater count areas.Citation:Chen, J., Ling, Z., Liu, J., et al., (2022), Digital and global lithologic mapping of the Moon at a 1:2,500,000 scale. Science Bulletin, 67(20): 2050-2054.Lu, X., Cao, H., Ling, Z., Fu, X., Qiao, L., Chen, J. Geomorphology, Mineralogy, and Geochronology of Mare Basalts and Non-Mare Materials around the Lunar Crisium Basin. Remote Sensing, 2021, 13: 4828.Zhao, Z., Chen, J., Ling, Z., et al., (2023), Chronology, composition, and mineralogy of mare basalts in the junction of Oceanus Procellarum, Mare Imbrium, Mare Insularum, and Mare Vaporum. Icarus, 397, 115531.</p
Lathrobium guizhouense CHEN, LI & ZHAO 2005
No full textLathrobium guizhouense CHEN, LI & ZHAO, 2005 Material examined: China: Guizhou: 1 , Fanjing Shan, 27°54'N, 108°42'E, 1800–2000 m, pitfall trap, 5.–11. VI.2014, leg. Reuter (cAss). Comment: The original description of L. guizhouense is based on twelve type specimens from the Fanjing Shan (CHEN et al. 2005), where this micropterous species is probably endemic.Published as part of Assing, Volker, 2015, New species and additional records of Lathrobium and Elytrobium from the Palaearctic region, with special reference to the fauna of East Yunnan (Coleoptera: Staphylinidae: Paederinae), pp. 41-74 in Beiträge Zur Entomologie = Contributions to Entomology 65 (1) on page 64, DOI: 10.21248/contrib.entomol.65.1.41-74, http://zenodo.org/record/475388
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