94,220 research outputs found
Lycopus primus Tang and Li 2009
No full textLycopus primus Tang and Li, 2009 Lycopus primus Tang and Li, 2009a: 51, figs 4A–D, 5A–C, 6 A – E, ♂. Material examined. CHINA: Yunnan: Xishuangbanna, Mengla County, Menglun Town, Menglun Nature Reserve, G. Tang and Z. Y. Yao: 4 ♀, Lvshilin Forest Park, Limestone tropical seasonal rain forest (N21º54.600', E101º17.084', 640 m), 17 November 2009 (Tang-Yao_No.12); 1 ♀, Lvshilin Forest Park, Limestone tropical seasonal rain forest (N21º54.614', E101º16.880', 642 m), 4 December 2009 (Tang-Yao_No.42). Distribution. China (Hainan, Yunnan).Published as part of Tang, Guo & Li, Shuqiang, 2010, Crab spiders from Xishuangbanna, Yunnan Province, China (Araneae, Thomisidae) 2703, pp. 1-105 in Zootaxa 2703 on page 2
Hylica scutealba Tang & Zhang 2018
No full textHylica scutealba Tang & Zhang Hylica scutealba Tang & Zhang 2018: 535, figs 10–18, 21–31, 37–42, 48–54. India (Karnataka, Kerala, Maharashtra, Tamil Nadu).Published as part of Viraktamath, C. A. & Yeshwanth, H. M., 2023, Leafhopper subfamily Hylicinae (Hemiptera: Auchenorrhyncha: Cicadellidae) in the Indian subcontinent with description of new species, pp. 451-500 in Zootaxa 5319 (4) on page 454, DOI: 10.11646/zootaxa.5319.4.1, http://zenodo.org/record/820312
Recoil tritium reactions with spiropentane: primary hot interactions and secondary unimolecular decomposition
No full textIn recoil tritium reactions with spiropentane, the primary products, including those form abstraction, substitution and ring-opening processes, were all measured. Spiropentane-t molecules, excited by T-for-H substitution, underwent unimolecular processes by two different routes: one is the direct decomposition process and the other is the consecutive isomerization-decomposition process. In the former case the excited spiropentane-t molecules decomposed directly to C���H���T and C���H���T, while in the latter case the excited molecules isomerized to excited methylenecyclobutane-t molecules which then decomposed to give the same end products. The unimolecular nature of the reaction was verified by pressure studies from 79 to 4462 torr. The C���H���T/C���H���T ratios from these samples with the total pressure lower than 300 torr were all approximately equal to 1.0. This leads to the conclusion that nonrandomized decomposition is only a minor or negligible process in the employed pressure range. However, as the total pressure of the system became higher than 300 torr, this ratio began to deviate from unity. The ratio became lower than unity as the total pressure was increased. At the highest total pressure (4462 torr) this ratio is 0.76��0.02 compared to that of 0.90��0.02 at 1610 torr. The presence of this deviation confirmed that a small but finite fraction of the energy nonrandomized decomposition was actually present in the system which became more obvious at high pressures
Spilosynema mancum Tang & Li 2010, sp. nov.
No full textSpilosynema mancum sp. nov. Figs 55–57 Type material. Holotype: 1 ♂, CHINA: Yunnan: Xishuangbanna, Mengla County, Menglun Town, Menglun Nature Reserve, Lvshilin Forest Park, Limestone tropical seasonal rain forest (N21º54.705', E101º16.898', 656 m), 13 November 2009, leg. G. Tang and Z.Y. Yao (Tang-Yao_No.4). Paratypes: CHINA: Yunnan: Xishuangbanna, Mengla County, Menglun Town, Menglun Nature Reserve, leg. G. Tang and Z.Y. Yao: 1 ♀, same data as holotype; 2 ♀, Lvshilin Forest Park, Limestone tropical seasonal rain forest (N21º54.710', E101º16.941', 652 m), 16 November 2009 (Tang-Yao _ No. 10); 1 ♀, G213 roadside, Bamboo plantations (N21º54.380', E101º16.815', 620 m), 21 November 2009 (Tang-Yao _ No. 17); 1 ♀, G213 roadside, Bamboo plantation (N21º54.386', E101º16.803', 627 m), 22 November 2009 (Tang-Yao _ No. 18); 1 ♂, G213 roadside, Bamboo plantation (N21º54.380', E101º16.815', 627 m), 22 November 2009 (Tang-Yao _ No. 19); 1 ♀, Garbage dump, Secondary tropical forest (N21º54.380', E101º16.815', 627 m), 23 November 2009 (Tang-Yao _ No. 20); 2 ♂, 8 ♀, same data as Tang-Yao _ No. 20 (Tang-Yao _ No. 21). Etymology. The specific name comes from the Latin word mancum (lacking or defective), referring to the palp without RTA, adjective. Diagnosis. This species can be easily distinguished from other members of this genus by: palp without RTA and epigynum with a large excurved sclerotized plate. Description. Male (holotype measured): Total length 3.50. Prosoma 1.50 long, 1.50 wide; opisthosoma 2.00 long, 1.80 wide. Dorsal shield of prosoma light yellow with a pair of gray stripes, sides gray. Eye measurements: AME 0.05, ALE 0.10, PME 0.04, PLE 0.08, AME − AME 0.18, AME − ALE 0.18, PME − PME 0.20, PME − PLE 0.28. MOA 0.34 long, front width 0.26, back width 0.30. Chelicerae yellow, gnathocoxae, labium and sternum light yellow. Legs yellow with many spines. Leg measurements: I: 7.70 (2.20, 2.70, 1.80, 1.00); II: 7.90 (2.30, 2.80, 1.80, 1.00); III: 4.00 (1.30, 1.50, 0.70, 0.50); IV: 4.40 (1.50, 1.50, 0.80, 0.60), leg formula 2143. Opisthosoma dorsally grayish yellow with black stripes and white spots. Venter light gray. Palp (Figs 55 B–D, 57 A–B). Palp only with VTA, VTA wide basally and beak-shaped distally; tutacular apophysis hook-shaped, curved distally; embolus filiform. Female (one of the paratypes measured): Total length 3.10. Prosoma 1.40 long, 1.40 wide; opisthosoma 1.80 long, 1.50 wide. Dorsal shield of prosoma light brown, with a pair of gray stripes, sides gray. Eye measurements: AME 0.07, ALE 0.12, PME 0.05, PLE 0.10, AME − AME 0.16, AME − ALE 0.17, PME − PME 0.20, PME − PLE 0.30. MOA 0.36 long, front width 0.28, back width 0.30. Chelicerae, gnathocoxae, labium and sternum yellow. Legs I, II light brown, legs III, IV yellow. Leg measurements: I: 6.50 (2.00, 2.40, 1.40, 0.70); II: 6.30 (2.00, 2.20, 1.40, 0.70); III: 3.40 (1.10, 1.20, 0.60, 0.50); IV: 3.80 (1.30, 1.30, 0.70, 0.50), leg formula 1243. Opisthosoma dorsally yellow with grayish markings and white spots. Venter yellow with black markings posteriorly. Epigynum (Figs 56 B–C, 57 C–D). Epigynum with a large, excurved sclerotized plate; copulatory openings visible; copulatory ducts long and twisted; spermathecae oval. Variation. Total length: ♂ 2.90–3.50 (n=6); ♀ 3.10–4.50 (n=20). Distribution. China (Yunnan).Published as part of Tang, Guo & Li, Shuqiang, 2010, Crab spiders from Xishuangbanna, Yunnan Province, China (Araneae, Thomisidae) 2703, pp. 1-105 in Zootaxa 2703 on pages 74-7
Display cultural materials online: a study of representational schemes for pictorial information
No full textErratum to: Effects of nutraceuticals on quality of life and sexual function of perimenopausal women (Journal of Endocrinological Investigation, (2017), 40, 1, (27-32), 10.1007/s40618-016-0500-2)
No full textUnfortunately, one of the co-author first name was wrongly published in the original version. The complete correct name of the co-author is given below. A. M. C. Rapisarda. The original version of this article is also updated
Recoil tritium reactions with carbon-carbon single bonds
No full textRecoil tritium atoms were allowed to react in hexafluorocyclobutene-moderated systems with hydrocarbons of the general formula R?éü-CH?éâ. The CH?éâT yields per bond from the hot tritium abstraction of end methyl groups from alkanes, alkenes, and alkynes were correlated inversely with the R?éü-CH?éâ bond dissociation energies. Other parameters postulated to control hot atom reactions, such as mass, size, and electron density, were also examined and found not to exert a major influence in determining the CH?éâT yields. On the basis of incomplete employment of allyl resonance in abstraction of the terminal methyl group from 1-butene, the time scale for that and similar reactions was set at 2-5x10?ü????ü? sec. The predominance of chemical parameters in controlling the yields from hot atom reactions suggest that certain collisional complexes can be proposed. In one possible complex, the recoil tritium attacks along the R?éü-CH?éâ bond axis, resulting in a linear complex in which the cleavage of the bond should be the rate-differentiating factor. The other possible complex is triangular in nature, with the recoil tritium attacking in a direction perpendicular to the R?éü-CH?éâ bond; it is the electron overlap process and the C-T bond formation process which should be rate -differentiating in this complex. The experimental findings in this work suggest two different mechanisms for recoil tritium atoms interacting with carbon-carbon single bonds. One mechanism calls for the linear complex to be the major contributor to the CH?éâT yield while the triangular complex accounts for a minor portion.
Stellar halo density with LAMOST K and M giants
No full textAIMS. We derive the morphology of the stellar component in the outer halo volume, and search for possible over densities due to substructures therein. METHODS. We made use of some of the data releases of the spectroscopic survey LAMOST DR8-DR9 in tandem with distance determinations for two subsamples, that is, of K-giants and M-giants, respectively, making up 60,000 stars. These distance are obtained through Bayesian techniques that derive absolute magnitudes as a function of measured spectroscopic parameters. Our calculation of the density from these catalogues requires: (1) derivation of the selection function; and (2) a correction for the convolution of the distance errors, which we carried out with Lucy's inversion of the corresponding integral equation. RESULTS. The stellar density distribution of the outer halo (distance to the Galactic centre, rG, of between 25 and 90 kpc) is a smooth monotonously decreasing function with a dependence of approximately rho proportional to r(G)(-n), with n=4.6 +/- 0.4 for K-giants and n=4.5 +/- 0.2 for M-giants, and with a insignificant oblateness. The value of n is independent of the angular distance to the Sagittarius tidal stream plane, which is what would be expected if such a stream did not exist in the anticenter positions or had a negligible imprint in the density distribution in the outer halo. Apart from random fluctuations or minor anomalies in some lines of sight, we do not see substructures superimposed in the outer halo volume within the resolution that we are using and limited by the error bars. This constrains the mass of over- and under-densities in the outer halo to be of less than or similar to 10(3) M-circle dot/deg(-2), whereas the total mass of the stellar halo, including inner and outer parts, is similar to 7x10(8 )M(circle dot)
Paraborboropactus canalis Tang & Li 2010, sp. nov.
No full textParaborboropactus canalis sp. nov. Figs 31–32 Type material. Holotype: ♀, CHINA: Yunnan: Xishuangbanna, Mengla County, Menglun Town, Menglun Nature Reserve, Lvshilin Forest Park (N21º54.705', E101º16.898', 664 m), 15 November 2009, G. Tang and Z.Y. Yao (Tang-Yao_No.8). Etymology. The specific epithet is taken from the Latin word canalis (furrow or groove), referring to the epigynum with a pair of long grooved copulatory openings, noun in apposition. Diagnosis. This new species can be easily distinguished from P. rhombus (see Tang & Li 2009c: 712–721) and P. oblatus (see Tang & Li 2010: 53–54) by the wide anteriorly situated hood and the shape of septum. Description. Female (holotype measured): Total length 8.20. Prosoma 3.40 long, 3.30 wide; Opisthosoma 5.30 long, 4.90 wide. Dorsal shield of prosoma brown with black brown longitudinal stripes. AER procurved, tubercles of ALE with clustered hairs. Eye measurements: AME 0.10; ALE 0.24; PME 0.14; PLE 0.21; AME– AME 0.15; AME–ALE 0.24; PME–PME 0.46; PME–PLE 0.42. MOA length 0.73 with front width 0.48 and back width 0.74. Chelicera, gnathocoxa, labium and sternum blackish brown. Chelicerae with 3 pro- and 3 retromarginal teeth. Femur I, II with thick spines and clustered hairs; tibiae I, II with white brush-shaped clustered hairs. Tibiae and metatarsi of I, II with 4, 3 pairs of ventral spines, respectively. Leg measurements: I: 12.40 (4.00, 5.30, 2.30, 0.80); II: 13.60 (4.30, 5.50, 2.50, 1.30); III: 7.00 (2.30, 2.70, 1.20, 0.80); IV: 8.00 (2.60, 3.00, 1.50, 0.90), leg formula: 2143. Opisthosoma dorsally yellowish brown with small brown clustered hairs; venter light brown. Epigynum (Figs 31 C–D, 32 A–B). Epigynum with a wide, anteriorly situated hood and a pair of posteriorly situated epigynal teeth; copulatory openings long groove like; copulatory ducts short, wide; spermathecae wrinkled. Male: Unknown. Distribution. China (Yunnan).Published as part of Tang, Guo & Li, Shuqiang, 2010, Crab spiders from Xishuangbanna, Yunnan Province, China (Araneae, Thomisidae) 2703, pp. 1-105 in Zootaxa 2703 on pages 44-4
Structure analysis of 230 kilodaltons bullous pemphigoid antigen
No full textVita.The 230 kD bullous pemphigoid antigen (BP230 or BPAG1) is a major protein of the cytoplasmic dense plaque of the epidermal hemidesmosome (HD) which may link keratin filaments to transmembrane proteins. The BP230 sequence is highly homologous to desmoplakin I (DPI) and plectin, both keratin-associated proteins. All are predicted to have globular N- and C-terminal domains flanking a central a-helical coiled coil rod, consistent with dumbbell like rotary shadowing images of DPI and plectin. Using genetic cloning, two polypeptides spanning the putative N-terminal globular and coiled coil rod domains of BP230 have been expressed in E. coli. BP-1 (MW=111kD), spanning amino acids 663-1581 of BP230 (Sawamura et al., 1991) is partially purified following urea extraction from insoluble bacterial inclusion bodies and renatured into a soluble form by dialysis. It has an S[20,w] value of 4 .8 on a sucrose density gradient, can be crosslinked to a dimer, and behaves on gel filtration as a highly asymmetric dimer or higher order multimer. BP-1A, 186 amino acids shorter than BP-1 at its N-terminal, is soluble when expressed in E. coli and has been purified [greater than or equal to] 95% . Like BP-1, it is highly asymmetric and has a high content of a-helix by circular dichroism, as expected for significant coiled coil tertiary structure. Rotary shadowing of BP-1 and BP-1 A gives a high percentage of images with globular head and rod-like tails. The tails have roughly equal lengths: 60 [plus or minus] 9 nm (N = 185) for BP-1 and 55 [plus or minus] 8 nm (N = 159) for BP-1 A, implying that the head domains must be formed at the N-termini of BP-1 and BP-1 A. The estimated rod length, 383 [plus or minus] 57 amino acids (.15 nm/amino acid), supports the largest of three recent predictions for N-terminal domain size (boundary with rod at residue 1145 rather than at 708 or 875; Green et al., 1992) and provides a basis for modeling structure and function in the BP230/DPI/plectin family
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