180,867 research outputs found
On injectors of Finite Soluble Groups
Full text linkGuo, W. On injectors of Finite Soluble Groups / Wenbin Guo, N. T. Vorob’ev // Communications in Algebra. – 2008. – Vol. 36, № 9. – P. 3200–3208.In this article, we give the description of the f)-injectors of a finite soluble group, for a Hartley class f).The authors are grateful for the helpful suggestions of the referee. Research of the first author is supported by a NNSF grant of China(#10771180)
Ixodes kandingensis Guo, Sun, Xu and Durden 2017
No full text112. Ixodes kandingensis Guo, Sun, Xu and Durden, 2017. A Palearctic species known only to parasitize Carnivora: Mustelidae. M: unknown F: Guo et al. (2017) N: Guo et al. (2017) L: unknown Redescriptions: nonePublished as part of Guglielmone, Alberto A., Petney, Trevor N. & Robbins, Richard G., 2020, Ixodidae (Acari: Ixodoidea): descriptions and redescriptions of all known species from 1758 to December 31, 2019, pp. 1-322 in Zootaxa 4871 (1) on page 37, DOI: 10.11646/zootaxa.4871.1.1, http://zenodo.org/record/442334
Lebertia (Lebertia) abseta Guo, Jin & Asadi 2006
No full text3.4 <i>Lebertia</i> (<i>Lebertia</i>) <i>abseta</i> Guo, Jin <i>&</i> Asadi, 2006 <p> <i>Lebertia</i> (<i>Pseudolebertia</i>) <i>abseta</i> Guo, Jin & Asadi, 2006: 346; Guo & Xu, 2013: 190.</p> <p>Material examined. 3 females, 1 male, Pangquangou Nature Reserve, Jiaocheng County, Shanxi, China (37°30′N, 111°39′E; elev. 1 500 m), 15 August 2002, coll. Jianjun Guo; 6 females, 2 males, Mt. Luya National Nature Reserve, Shanxi, China (37°43′N, 111°51′E; elev. 1 350 m), 17 August 2002, coll. Jianjun Guo; 2 females, Mt. Cangyan, Jingxing County, Hebei, China (38°02′N, 114°08′E; elev. 900 m), 19 August 2002, coll. Jianjun Guo; 3 females, 2 males, Taibaishan National Nature Reserve, Taibai County, Shaanxi, China (37°07′N, 107°53′E; elev. 2 150 m), 9 July 2009, coll. Chengshuai Xu.</p> <p> Remarks. The species was erected by Guo, Jin <i>&</i> Asadi (2006) based on specimens from Iran, and redescribed by Guo <i>&</i> Xu (2013) based on specimens from China. In this paper, the authors agree with the system which proposed by Gerecke (2009) that the subgenus <i>Pseudolebertia</i> should be considered the synonym of the subgenus <i>Lebertia</i>. So that, the species <i>L.</i> (<i>Pseudolebertia</i>) <i>abseta</i> should be <i>L.</i> (<i>Lebertia</i>) <i>abseta</i>.</p> <p>Distribution. Palaearctic Region (Iran (Kerman); China (Shanxi, Shannxi, Hebei)).</p> <p> <b>Founding</b> This research was supported by the National Natural Science Foundation of China (31372161, 31201744), the Program of Science and Technology Innovation Talents Team, Guizhou Province (20144001), the Innovation Team Program for Systematic and Applied Acarology ([2014]33), and the Provincial Outstanding Graduate Program for Agricultural Entomology and Pest Control ([2013]010).</p> <p> <b>Acknowledgement</b> Special thanks to Prof. Shangwei Li (Institute of Entomology, Guizhou University, P. R. China) and Chengshuai Xu (Huantai No. 1 Middle School, Shandong Province, P. R. China) for providing references and advice to the authors.</p>Published as part of <i>Wang, Jialin, Jin, Daochao, Yi, Tianci & Guo, Jianjun, 2016, Water mites of subgenus Lebertia (Lebertia) Neuman from China (Hydrachnidia: Lebertiidae), pp. 54-63 in Zoological Systematics 41 (1)</i> on page 62, DOI: 10.11865/zs.201603, <a href="http://zenodo.org/record/5367272">http://zenodo.org/record/5367272</a>
N-(3-oxododecanoyl)-homoserine lactone regulates intracellular calcium of MC3T3 osteoblasts
No full textPseudomonas aeruginosa (P. aeruginosa) is associated with periapical periodontitis. The lesions are characterized by a disorder in osteoblast metabolism. Quorum sensing molecular N-(3-oxododecanoyl)-homoserine lactone (AHL) is secreted by P. aeruginosa and governs the expression of numerous virulence factors. AHL can trigger intracellular calcium ([Ca²⁺]i) fluctuations in many host cells. However, it is unclear whether AHL can regulate osteoblast metabolism by affecting [Ca²⁺]i changes or its spatial correlation. We explored AHL-induced apoptosis and differentiation in pre-osteoblastic MC3T3-E1 cells and evaluated [Ca²⁺]i mobilization using several extraction methods. The spatial distribution pattern of [Ca²⁺]i among cells was investigated by Moran's I, an index of spatial autocorrelation. We found that 30 μM and 50 μM AHL triggered opposing osteoblast fates. At 50 μM, AHL inhibited osteoblast differentiation by promoting mitochondrial-dependent apoptosis and negatively regulating osteogenic marker genes, including Runx2, Osterix, bone sialoprotein (Bsp), and osteocalcin (OCN). In contrast, prolonged treatment with 30 μM AHL promoted osteoblast differentiation concomitantly with cell apoptosis. The elevation of [Ca²⁺]i levels in osteoblasts treated with 50 μM AHL was spatially autocorrelated, while no such phenomenon was observed in 30 μM AHL-treated osteoblasts. The blocking of cell-to-cell spatial autocorrelation in the osteoblasts provoked by 50 μM AHL significantly inhibited apoptosis and partially restored differentiation. Our observations suggest that AHL affects the fate of osteoblasts (apoptosis and differentiation) by affecting the spatial correlation of [Ca²⁺]i changes. Thus, AHL acts as a double-edged sword for osteoblast function.
Please cite this article below if using any data from this dataset.
Guo J, Wang Z, Weng Y, Yuan H, Yoshida K, Ikegame M, Uchibe K, Kamioka H, Ochiai K, Okamura H, Qiu L. N-(3-oxododecanoyl)-homoserine lactone regulates osteoblast apoptosis and differentiation by mediating intracellular calcium. Cellular Signalling. 2020 Aug 18:109740. https://doi.org/10.1016/j.cellsig.2020.10974
Kinematic Simulation and Structure Analysis of a Morphing Flap
Full text linkThis thesis presents a study on the design and analysis of a morphing flap
structure integrated with actuation mechanism for potential application to large
aircraft. Unlike the conventional rigid flap mounted on the wing trailing edge,
the morphing flap is designed as a unitized structural system integrated with
three primary components: the upper and lower flexible skins reinforced by
stringers, an eccentric beam actuation mechanism (EBAM) with discs fixed on it,
and the connection of the discs with the stringers. Based on the EBAM concept
proposed by Dr Guo in previous research [1], the current study has been
focused on the EBAM design and optimization, kinematic simulation and
structural modelling of the morphing flap.
Although a lot of efforts have been made to develop the morphing flap in
previous research, it is lack of detailed design of the disc-skin linkage and clear
view on the mechanism optimization in relation to the shape requirement. The
main objective of this research is to meet the morphing shape requirements and
calculate the actuation torque for a specified morphing flap. Firstly effort was
made to design and optimize the disc shape and locations in the EBAM for the
best matching of the specified morphing shape with minimum actuation torque
demand. It is found that minimum three discs are required and their locations
have little effect on the actuation torque. Secondly attention was focused on
designs of the disc and a C-linkage with the stringers. To ensure that the C-
linkage works in practice, a twisted stringer flange design was proposed. Thirdly
the actuation mechanism was integrated with the stiffened skin to play the role
of an active rib in the flap structure. Based on the design, FE modelling and
analysis of the morphing flap structure was carried out. The behaviour of the
morphing flap under the internal actuation and external aerodynamic load was
applied for stress analysis and detailed design of the structures. Finally the
kinematics of the integrated morphing flap was simulated by using CATIA to
demonstrate the feasibility and the effectiveness of the improved design
Podocinum tibetensis Yan, Jin, Wu, Guo & Guo 2012
No full text36. Podocinum tibetensis Yan, Jin, Wu, Guo & Guo, 2012 Podocinum tibetensis Yan, Jin, Wu, Guo & Guo, 2012: 36. Type depository. Institute of Entomology, Guizhou University, Guiyang, China. Type locality and habitat. China, Bome County (29°53’ N, 95°40’ E; alt. 2726 m), Nyingchi, Tibet Autonomous Region, 25 August 2010, in litter under pine tree.Published as part of Barros, Avyla R. A., Castilho, Raphael C. & De Moraes, Gilberto J., 2020, Catalogue of the mite family Podocinidae Berlese (Acari: Mesostigmata), pp. 141-156 in Zootaxa 4802 (1) on page 153, DOI: 10.11646/zootaxa.4802.1.9, http://zenodo.org/record/390496
Cladotanytarsus dilatus Wang & Guo, 2004, sp. n.
No full textCladotanytarsus dilatus sp. n. (Figs. 5–6) Type material. Holotype male (BDN No. 09505), China, Sichuan Province, Xichang City. VI. 4.1996. Leg. C. Deng. Light trap. Etymology. From Latin dilatus, referring to the digitus with a swollen apex. Diagnosis. Digitus with dilated apex. Lamellae of the median volsella extending beyond inferior volsella. Superior volsella with 1 basimedial seta. Male imago (n = 1) Total length 2.04 mm. Wing length 1.23 mm. Total length/wing length 1.66. Coloration: wing, legs and abdomen yellowish green; thorax and antenna brown; eyes black. Head. Ultimate flagellomere 400 µm long. AR 1.00. Temporal setae: 5 inner, 1 outer verticals and 2 postorbitals. Clypeus with 11 setae. Tentorium 102 µm long, width 20 µm. Palpomere lengths (in µm): 22; 26; 66; 80; 140. Wing (Fig. 5). VR 1.21 and Cu length 600 µm. Macrotrichia on membrane: R 4 + 5 21; M 1 + 2 14. Setae on veins: R 3; R 4 + 5 2; M 1 + 2 20. Thorax. Acrostichals 0; dorsocentrals 6; prealars 0. Scutellars 0. Legs. Foreleg is lost. Spurs of middle tibia 22 and 24 µm long, and of hind tibia 25 and 36 µm long. Both combs of middle leg composed of 12 free teeth, of hind leg composed of 10 and 12 free teeth. Lengths and proportion of legs (in µm): Hypopygium (Fig. 6). Tergite IX with 6 setae. Anal point 48 µm long, broad, tapering to pointed apex, with about 11 lateral setae and about 22 spinules. Phallapodeme 74 µm long. Transverse sternapodeme 70 µm long. Gonocoxite 90 µm long. Superior volsella 30 µm long, with 5–6 dorsal setae and 1 long basimedial setae. Digitus 28 µm long, with rounded apex. Inferior volsella 42 µm long. Stem of median volsella 32 µm long, with lamellae extending beyond inferior volsella. Gonostylus 74 µm long. HR 1.22; HV 2.76. Distribution. This species is known from Chayu County, Sichuan Province (Oriental China). Remarks. This new species is close to C. elaensis Bilyj & Davies (1987) in the characters of the hypopygium, but the lamellae of the median volsella of the present species are longer than those of C. elaensis, and there is only 1 basimedial seta on the superior volsella, whereas C. elaensis has 3. The apex of digitus in the present species is round and swollen, but in C. elaensis it is thin and attenuate. Additionally, the coloration of the present species is lighter than that of C. elaensis.Published as part of Wang, Xinhua & Guo, Yuhong, 2004, A review of the genus Cladotanytarsus Kieffer from China, with the description of three new species (Diptera: Chironomidae: Tanytarsini), pp. 1-19 in Zootaxa 750 on pages 6-7, DOI: 10.5281/zenodo.15814
Rheotanytarsus liuae Wang & Guo, 2004, sp. n.
No full textRheotanytarsus liuae sp. n. (Figs. 8–9) Type material Holotype male (BDN No. 20408), China, Fujian Province, Yongtai County, 17. IX. 2002. Leg. Zh Liu, light trapped. Etymology. Named in honour of Ms. Zh. Liu who collected the type material. Diagnosis. The species is characterized by the straight shoulders on tergite IX adjacent to the anal point base and the lack of plates on the median volsellae, a combination found only in R. tobaseptidecimus Kikuchi & Sasa of the globosus group. It differs from R. tobasepticecimus by having an Hshaped tergite band, where they are of the Y type in R. tobaseptidecimus. Male imago (n= 1) Total length 2.10 mm. Wing length 1.14 mm. Total length / wing length 1.84. Wing length / length of profemur 1.74. Ground coloration pale, thorax with brown vittae, legs yellowish with apical 1 / 5 of femur brown and abdomen with brown metanotum. Head. Antenna with 13 flagellomeres. AR 0.75, ultimate flagellomere 328 µm long. Temporal setae 9, including 5 inner verticals, 3 outer verticals and 1 postorbital. Clypeus with 16 setae. Tentorium 100 µm long, 25 µm wide. Palpomere lengths (in µm): 30; 30; 86; 94; 154. Thorax. Acrostichals 11; dorsocentrals 8; prealars 1; scutellars 4. Wing (Fig. 8). RM with 1 setae. VR 1.50, Cu length 560 µm. Legs. Coloration yellowish and femur with brown apex. Front tibia spur 22 µm. Spur of middle tibia 28 and 28 µm and hind tibia 34 and 32 µm long. The combs of middle leg composed of 12 and 11 free teeth, hind leg of 16 and 12 free teeth (Table 4): fe ti ta 1 ta 2 ta 3 ta 4 ta 5 LR P 1 656 340 660 360 280 200 88 1.94 P 2 620 450 250 136 100 70 50 0.56 P 3 690 576 376 230 184 120 70 0.65 Hypopygium (Fig. 9). Anal tergite bands of H type. Posterior margin of tergite IX lateral of anal point straight and tergite IX with 7 dorsal setae. Anal point 27 µm long, parallelsided and slightly dilated apically. Crests well developed, basally rounded and fused near apex, no setae between or basal to crests. Phallapodeme 70 µm long. Transverse sternapodeme 50 µm long. Gonocoxite 100 µm long. Superior volsella 36 µm long, elongate ovoid. Inferior volsella 64 µm long. Median volsella 50 µm long, with distal setae not fused into plates. Gonostylus 90 µm long. HR 1.11; HV 2.33. Distribution. The species is known from Fujian Province (Oriental China).Published as part of Wang, Xinhua & Guo, Yuhong, 2004, A review of the genus Rheotanytarsus Thienemann & Bause from China (Diptera: Chironomidae: Tanytarsini), pp. 1-19 in Zootaxa 650 on page 8, DOI: 10.5281/zenodo.15814
Rheotanytarsus apiculus Wang & Guo, 2004, sp. n.
No full textRheotanytarsus apiculus sp. n. (Figs. 12–13) Type material. Holotype male (BDN No. 07458), China, Yunnan Province, Jinghong Country. IV. 3. 1987. Leg. H. Zou, sweep net. Etymology. From Latin apiculus, point, referring to the spiny anal point, which is unique within the genus. Diagnosis. The species differs from other members of the pellucidus group by the long and narrow anal point without crests. Male imago (n= 1). Total length 1.02 mm. Wing length 0.72 mm. Total length / wing length 1.42. Wing length / profemur length 2.06. Ground coloration yellowish, scutum and vittae slightly brown, femur and tibia of foreleg brown in apical 1 / 5, femur of middle and hind legs brown in apical 1 / 5, eyes black. Head. Antenna with 13 flagellomeres. Ultimate flagellomere 84 µm long. AR 0.24. Temporal setae consisting of 1 inner and 2 outer verticals. Clypeus with 15 setae. Tentorium 54 µm long, width 7 µm. Palpomere lengths (in µm): 20; 15; 20; 42; 60. Wing (Fig. 12). VR 1.46, Cu length 336 µm. Thorax. Acrostichals 2; dorsocentrals 6; prealars 1. Scutellum with 2 setae. Legs. Spur of front tibia 19 µm. Spurs of middle tibia 22 and 12 µm long, of hind tibia 20 and 22 µm long. Combs of middle leg composed of 8 and 8 free teeth, hind composed of 11 and 6 free teeth (Table 6): Hypopygium (Fig. 13). Tergite IX without setae. Anal point 26 µm long, and distally very thin, without crests. Phallapodeme 30 µm long. Transverse sternapodeme 26 µm long, straight, with oral projections. Gonocoxite 64 µm long. Superior volsella 20 µm long, subrectangular, with 1 inner and 3 outer margin setae. Inferior volsella 40 µm long. Median volsella 74 µm long, lamellae not fused into plate, extending to apex of gonostylus. Gonostylus tapering gradually to rounded apex, 44 µm long. HR 1.45; HV 2.32. Distribution. The present species is known from Yunnan Province of southern China (Oriental Region).Published as part of Wang, Xinhua & Guo, Yuhong, 2004, A review of the genus Rheotanytarsus Thienemann & Bause from China (Diptera: Chironomidae: Tanytarsini), pp. 1-19 in Zootaxa 650 on pages 11-12, DOI: 10.5281/zenodo.15814
Rheotanytarsus aphelus Wang & Guo, 2004, sp. n.
No full textRheotanytarsus aphelus sp. n. (Figs. 1–3) Type material. Holotype male (BDN No. 07015), China, Tianjin City, Ji County, Yuqiao Reservoir. X. 17. 1987. Leg. X. Wang, sweep net. Etymology. From Latin apheles, smoothness, simple, referring to the smooth superior volsella. Diagnosis. The species differs from other members of the acerbus group by having well developed oral projections of the transverse sternapodeme, more numerous acrostichals, and fewer setae anterior to the anal point. Male imago (n= 1) Total length 3.40 mm. Wing length 1.90 mm. Total length / wing length 1.79. Wing length / profemur length 2.02. Coloration brown, eyes black. Head. Antenna with 13 flagellomeres. AR 0.97, ultimate flagellomere 528 µm long. Temporal setae consisting of 8 inner, 4 outer verticals and 4 postorbitals. Clypeus with 18 setae. Tentorium 140 µm long, width 30 µm. Palpomere lengths (in µm): 40; 52; 134; 144; 224. Wing (Fig. 1). VR 1.42, Cu 840 µm long. Thorax. Acrostichals 26; dorsocentrals 9; prealars 1. Scutellum with 8 setae. Legs. Spur of front tibia 30 µm. Spurs of middle tibia 40 and 32 µm long, of hind tibia 48 and 44 µm long. Combs of middle leg composed of 18 and 14 free teeth, hind leg of 18 and 16 free teeth. Lengths and proportion of legs (Table 1): Hypopygium (Figs. 2–3). Anal tergite bands V type, widely separated medially, extending almost to base of anal point. Tergite IX with 8 setae. Anal point tapering gradually to rounded point. Crests well developed, subparallel. Phallapodeme 70 µm long. Transverse sternapodeme 60 µm long, straight, with pointed oral projections. Gonocoxite 140 µm long. Superior volsella 46 µm long, rectangular on left side, oval on right, with 2 inner and 7–8 dorsal setae, 1 long seta on ventral surface near middle. Digitus absent. Inferior volsella 89 µm long. Median volsella (Fig. 3) 66 µm long, lamellae on about 35–40 µm long stem. Gonostylus abruptly narrowed in apical 1 / 2, recurved, 140 µm long. HR 1.00; HV 2.43. Distribution. The species is known from Yuqiao Reservoir, a typical mesotrophic water body in Tianjin (Palaearctic China).Published as part of Wang, Xinhua & Guo, Yuhong, 2004, A review of the genus Rheotanytarsus Thienemann & Bause from China (Diptera: Chironomidae: Tanytarsini), pp. 1-19 in Zootaxa 650 on pages 2-4, DOI: 10.5281/zenodo.15814
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