71,835 research outputs found
Xu xue cong ke. v.1
No full textv. 1. 說文說 : 1卷 / 孫濟世(淸)撰. 輯注古義考 : 1卷 / 曹仁虎(淸)撰 -- v. 2. 說文訂訂 : 1卷 / 嚴可均(淸)撰. 說文辨疑 : 1卷 / 顧廣垠(淸)撰. 說文舉例 : 1卷 / 陳瑑(淸)撰 -- v. 3. 說文蠡箋 : 1卷 / 潘奕雋(淸)撰 -- v. 4. 王氏讀說文記 : 1卷 / 王念孫(淸)撰. 讀說文證疑 : 1卷 / 陳詩庭(淸)撰. 說文新坿考校正 : 1卷 / 王筠(淸)撰.v. 1. Shuo wen shuo : 1 juan / Sun Jishi (Qing) zhuan. Ji zhu gu yi kao : 1 juan / Cao Renhu (Qing) zhuan -- v. 2. Shuo wen ding ding : 1 juan / Yan Kejun (Qing) zhuan. Shuo wen bian yi : 1 juan / Gu Guangqi (Qing) zhuan. Shuo wen ju li : 1 juan / Chen Zhuan (Qing) zhuan -- v. 3. Shuo wen li jian : 1 juan / Pan Yijun (Qing) zhuan -- v. 4. Wang shi du Shuo wen ji : 1 juan / Wang Niansun (Qing) zhuan. Du Shuo wen zheng yi : 1 juan / Chen Shiting (Qing) zhuan. Shuo wen xin fu kao jiao zheng : 1 juan / Wang Yun (Qing) zhuan.[許頌鼎 ; 許溎祥輯]刊本."香港中文大學圖書館中國古籍庫"提供電子版.Kan ben.In oriental style.[Xu Songding, Xu Guixiang ji]"Xianggang Zhong wen da xue tu shu guan Zhongguo gu ji ku" ti gong dian zi ban
Cui fu jun ci lu.
No full text鄭烺輯 ; [徐乃昌].綫裝.框 14.5x11 公分, 10行20字, 小字雙行, 黑口, 左右雙邊, 黑魚尾, 版心中鐫書名.叢書第1-8冊合共1函.Xian zhuang.Kuang 14.5x11 gong fen, 10 hang 20 zi, xiao zi shuang xing, hei kou, zuo you shuang bian, hei yu wei, ban xin zhong juan shu ming.Zheng Lang ji ; [Xu Naichang].Cong shu di 1-8 ce he gong 1 han
C-Jun N-terminal kinases/c-Jun and p38 pathways cooperate in ceramide-induced neuronal apoptosis
No full textUnderstanding the regulation of the apoptotic program in neurons by intracellular pathways is currently a subject of great interest. Recent results suggest that c-Jun N-terminal kinases (JNK), mitogen-activated protein kinases and the transcription factor c-Jun are important regulators of this cell death program in post-mitotic neurons following survival-factor withdrawal. Our study demonstrates that ceramide levels increase upon survival-factor withdrawal in primary cultured cortical neurons. Furthermore, survival-factor withdrawal or addition of exogenous c2-ceramide induces JNK pathway activation in these cells. Western blot analyses of JNK and c-Jun using phospho-specific antibodies reveal that JNK and subsequent c-Jun phosphorylation occur hours before the initiation of apoptosis, reflected morphologically by neurite retraction and fragmentation, cell-body shrinkage and chromatin fragmentation. Immunocytochemistry using the same antibodies shows that phospho-JNK are localized in the neurites of control neurons and translocate to the nucleus where phospho-c-Jun concurrently appears upon ceramide-induced apoptosis. To determine if ceramide-induced c-Jun activation is responsible for the induction of the apoptotic program, we performed transient transfections of a dominant negative form of c-Jun, truncated in its transactivation region. Our results show that DNc-Jun partially protects cortical neurons from ceramide-induced apoptosis. Treatment of dominant negative c-Jun-expressing neurons with the pharmacological inhibitor of p38 kinase, SB203580, completely blocked neuronal death. Thus our data show that p38 and JNK/c-Jun pathways cooperate to induce neuronal apoptosis
Coherent selection of invisible high-order electromagnetic excitations
No full textResearch data for Coherent selection of invisible high-order electromagnetic excitations, Ming Lun Tseng, Xu Fang, Vassili Savinov, Pin Chieh Wu, Jun-Yu Ou, Nikolay I. Zheludev, and Din Ping Tsai, Scientific Reports 7, 44488(2017)</span
Cryptomya (Venatomya) sinensis Xu 1987
No full textCryptomya (Venatomya) sinensis (Xu, 1987) Figure 5 A–F Tugonia sinensis Xu, 1987: 438, 441, fig. 1 b—Bernard et al., 1993: 107; Xu, 1997: 230; Lutaenko & Xu, 2008: 52, text-fig. 6 D; Xu & Zhang, 2008: 257, fig. 814; Xu, 2008: 589. Cryptomya (Venatomya) sinensis (Xu, 1987) — Huber, 2010: 766. Material examined. MBM 300741 (no. 84 M- 185) (Holotype) (1 articutate shell), Huian, Fujian Province, China, on July 17 th, 1984. Distribution and habitat. Recent. East China Sea, Yellow Sea, China. Type locality. Huian, Fujian Province, China. Habitat unknown. Diagnosis. Length to 20 mm; shell laterally slightly compressed, thin and fragile; umbo prominent, situated slightly posterior, prosogyrate; sculpture of commarginal growth lines on anterior and anterorcentral shell, and radial ribs posterocentral to posterior, becoming more pronounced towards the posterior; posterior area lacking radial ribs; chondrophore in left valve shallow; pallial sinus shallow and broad, extending slightly beyond the posterior adductor scar; pallial line thin or obscure. Remarks. The shell of this species is slightly compressed and its posterior end is not attenuated as is typical of Tugonia. Our present placement with Cryptomya (Venatomya) coincides with Huber (2010: 766); however, we do not agree with his synonymization with C. (V.) elliptica. Based on our examinations of type specimens of C. (V.) sinensis and material of C. (V.) elliptica, the shell of C. (V.) elliptica is much more compressed than that of C. (V.) sinensis. Comparing shells of similar size, C. (V.) sinensis (MBM 300741, Length = 19.0 mm) is much more fragile, the sculpture stronger, and the umbo much larger and more tumid than in C. (V.) elliptica (MBM 136090, Length = 18.8 mm) (Fig. 5 G).Published as part of Zhang, Jun-Long, Xu, Feng-Shan & Liu, Rui-Yu, 2012, The Myidae (Mollusca, Bivalvia) from Chinese waters with description of a new species, pp. 39-60 in Zootaxa 3383 on page 49, DOI: 10.5281/zenodo.28173
Istiochrysis Rosa & Xu, gen. nov.
No full textIstiochrysis Rosa & Xu, gen. nov. (Figs 1 A– 1 F, 2 A– 2 D, 3 A– 3 D, 4 A– 4 F) Type species: Istiochrysis ziliolii Rosa, Feng & Xu, sp. nov. Diagnosis. Istiochrysis Rosa & Xu, gen. nov. is similar to the Nearctic and Neotropical genus Caenochrysis Kimsey & Bohart, 1981, and the Palaearctic and Oriental genera Chrysidea Bischoff, 1913 and Trichrysis Lichtenstein, 1876. However, this new genus can be separated from Caenochrysis, Chrysidea and Trichrysis by male genitalia with extended longitudinal crest on aedeagus (Figs 1 A– 1 C); apex of aedeagus enlarged and folded laterally (Figs 1 A, 1 B) (not enlarged in the other genera and tapering in Caenochrysis); facial fovea between antennal socket and lower margin of eye hardly visible and shallowly depressed and finely punctate (Figs 2 A, 2 B) (usually deeply depressed in Caenochrysis); pronotum without sublateral carina (Fig. 3 A) (usually with sublateral carina in Trichrysis); fore wing discoidal cell with thin and completely sclerotised outer vein (faint in Chrysidea); apex of T 3 without teeth (laterally dentate and medially undulate in Chrysidea, tridentate in Trichrysis); S 2 with large, subrectangular, black spots extending to lateral margins (Fig. 3 B), somehow similar to those in the genus Praestochrysis Linsenmaier, 1968 (small, suboval, not extending to lateral margins in Caenochrysis; suboval and separated in Chrysidea (Fig. 3 D), subtriangular and medially fused or nearly so in Trichrysis (Fig. 3 C)) (Bohart & Kimsey 1982; Linsenmaier 1984; Rosa & Xu 2015; Rosa et al. 2016 a) (Fig. 2 D). Description. Male. Head broader than high. Scapal basin with shallow depression on each side between antennal socket and lower margin of eye; depression visible only under certain angle (Figs 2 A, 2 B); bottom of depression filled with micro-punctures and densely setose. Scapal basin topped by TFC (Figs 2 A, 4 B); scapal basin with white setae, especially along lateral sides (Fig. 2 A). F 1 l/w> 3; MS= 1 MOD. Genal carina developed from gena to mandible. Subgenal area well defined. Median ocellus not lidded. Vertex without posterior depression beneath posterior ocellus. Mandible unidentate. Pronotum nearly as long as mesoscutellum with deep lateral depression, without sublateral carina. Mesopleuron with large episternal sulcus and scrobal sulcus (Fig. 4 D); area between episternal sulcus and scrobal sulcus large and subtriangular. Metanotum with raised median area. Fore wing with thin but completely sclerotized outer veins of discoidal cell (Fig. 3 A). T 2 and T 3 with shallow median longitudinal carinae (Fig. 4 E). Apex of T 3 without teeth, but with shallow concavity, thus appearing bilobate (Fig. 4 F); pit row well developed with enlarged and partly fused pits (Fig. 4 F). Black spots on S 2 elongate, fused along lateral margins (Fig. 3 B) and distinctly separated mesally. Male genitalia with gonostyle of gonocoxa elongate and slender, aedeagus with enlarge longitudinal crest, well visible in lateral view (Fig. 1 C). Female. Unknown. Biology. Unknown. Distribution. China (Yunnan). Etymology. From Greek noun istion (= sail), referring to the unique subsidiary structure longitudinally placed on aedeagus, looking like a sail in lateral view. The gender is feminine.Published as part of Rosa, Paolo, Feng, Jun & Xu, Zai-Fu, 2016, Istiochrysis gen. nov., a new chrysidid genus from Oriental China (Hymenoptera, Chrysididae), pp. 591-597 in Zootaxa 4111 (5) on page 592, DOI: 10.11646/zootaxa.4111.5.5, http://zenodo.org/record/26366
Real-time control stategies in transit operations : models and analysis
No full textThesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 1995.Includes bibliographical references (leaves 272-273).by Xu Jun Eberlein.Ph.D
Xi jun jun luo zhong de ji qun yun dong
No full textPh.D.Numerous investigations during the past decade have been focused on the collective motion in microbial systems and generated tremendous advances. Nevertheless, collective motion in structured microbial communities is far less understood compared to that in homogeneous microbial systems. We sought to investigate the collective behaviors of motile cells in bacterial colonies which represent perhaps the simplest form of structured microbial communities. Here, we have studied several types of bacterial collective motion observed in flagellated bacterial colonies, including the self-organization of motile rings and colony-scale unidirectional vortices. We suggest that both steric and hydrodynamic interactions contribute to the emergence of these remarkable collective motion in bacterial colonies. Our findings present unique forms of bacterial self-organization that may influence population structure and material distribution in bacterial communities. Moreover, our work may provide us a better understanding of active matter behaviors in complex fluids or gels.在過去的幾十年中，許多工作致力於研究微生物的集體運動，並取得了巨大進展。然而，結構化群落環境中的微生物集體運動還遠沒有被了解。我們試圖研究運動的細菌菌落中的集體行為，細菌菌落可能代表了最簡單的結構化微生物群落。在這篇論文中，我們研究了在細菌菌落中觀察到的幾種細菌集體運動模式，包括自組織在菌落邊緣形成運動環和菌落尺度的渦旋。我們認為，空間和流體相互作用都有助於細菌菌落中這些有趣的集體運動的出現。我們的發現提出了細菌自組織的獨特形式，可能會影響細菌群落中的種群結構和物質分佈。此外，我們的工作可能使我們對複雜流體或凝膠中活性物質的行為有更好的了解。Xu, Haoran = 細菌菌落中的集群運動 / 徐浩然.Thesis Ph.D. Chinese University of Hong Kong 2020.Includes bibliographical references (leaves 71-82).Abstracts also in Chinese.Title from PDF title page (viewed on March 28, 2022).Xu, Haoran = Xi jun jun luo zhong de ji qun yun dong / Xu Haoran
Mohrigia cylindrata Xu & Shi & Huang & Wu 2017, sp. nov.
No full textMohrigia cylindrata Xu & Huang, sp. nov. (Figs 2, 14 A, 16) Material examined. Holotype, male. China, Tibet. Motuo, Lage, 29°31'2"N, 94°52'52"E, 3193 m, 23-VII-2014, leg. Jun Xu [SM02406]. Paratypes: 1 male, the same data as holotype [SM02407]; 1 male, Motuo, Zhamo road, K18, 29°44'19''N, 95°40'41''E, 3286 m, 21-VII-2014, leg. Jun Xu [SM02527]. Yunnan. 1 male, Baoshan, Nankang, Gaoligong Nature Reserve, 24°49.729'N, 98°46.074'E, 2181 m, 11-V-2009, leg. Su-jiong Zhang [SM00899]. Diagnosis. The species is characterized by its thick-ovate gonostylus with the dorsal mesial margin expanded, with an apical tooth arising from a subcylindrical dorsal lobe, two long flagellate setae on the inner side of the gonostylus; hypopygium with a small setose intercoxal lobe; tegmen slightly and smoothly curved, parameral apodeme continuously sclerotized forming a central strip on dorsal side. Description (male). Color. Head and antennae dark brown; abdomen, hypopygium and thorax yellowishbrown; mesonotum brown; palps and legs pale brown; wings fumose. Head (Figs 2 C, D). Eye bridge with 2 rows of facets. Prefrons with 15 setae. Maxillary palps 3-segmented, basal segment with 2 setae; 2nd segment with 6–8 setae; 3rd segment with 5–8 setae. Length/width index of 4th flagellomere: 3.67–3.93. Thorax. Anterior pronotum with 3–5 setae, episternum 1 with 5–7 setae. Wings (Fig. 1 4 A). Wing length 2.24–2.64 mm, width/length: 0.35–0.37. c/w: 0.72–0.77. R1/R: 0.69–0.92. r-m, stM, M1 and M2 bare, CuA1 and CuA2 bare. Legs (Fig. 2 E). Length of spur/width of foretibia 0.96–1.10. Length of femur/length of metatarsus: foreleg 1.42–1.63. Length of metatarsus/length of tibia: foreleg 0.55–0.58, hind leg 0.47–0.53. Length of hind tibia/ length of thorax 1.20–1.34. Claws toothed. Hypopygium (Figs 2 A, B). The gonocoxite as long as the gonostylus. The gonostylus thick-ovate, densely setose on the apicoventral part, dorsal mesial margin expanded, with an apical tooth arising from a subcylindrical dorsal lobe, two long flagellate setae on the inner side of the gonostylus. Hypopygium with a small setose intercoxal lobe. Tegmen slightly and smoothly curved, parameral apodeme continuously sclerotized forming a central strip on dorsal side. Aedeagus relatively short. Sternite 10 with 1 seta on each half. Distribution. China (Yunnan, Tibet, Fig. 16). Remarks. The species is close to M. composivera Rudzinski, 2006 as they share an oval gonostylus and a small setose intercoxal lobe. But the new species differs in having a subcylindrical dorsal lobe, whereas the dorsal lobe is indistinct in M. composivera. In addition, M. composivera has a finger-like process at the apex of the central strip, while the new species does not have this structure. Etymology. This species is named after the subcylindrical dorsal lobe of the gonostylus, from the Latin adjective cylindratus, meaning cylindrical.Published as part of Xu, Jun, Shi, Kai, Huang, Junhao & Wu, Hong, 2017, Review of the genus Mohrigia Menzel (Diptera, Sciaridae) from China, pp. 71-98 in Zootaxa 4300 (1) on pages 74-77, DOI: 10.11646/zootaxa.4300.1.4, http://zenodo.org/record/83715
Anteon nanlingense Xu, Olmi & He 2011
No full text21. Anteon nanlingense Xu, Olmi & He, 2011 Anteon nanlingense Xu, Olmi & He 2011: 233. TL: Nanling National Nature Reserve (Guangdong, P.R. China) Material examined. SOUTH KOREA: 1 ♀, [GG] Annyang-si, Manan-gu, Gwanak Arb., 37 ° 25 ' 6 "N, 126 ° 56 ' 50 "E, 140 m, 9–24.VI. 2007 (MT), J.O. Lim (YNU). Hosts. Unknown. Distribution. South Korea (new record), Indonesia (Sulawesi), P.R. China (Guangdong). Remarks. The male is unknown. This species is here recorded for the first time from the Palaearctic (South Korea).Published as part of Kim, Chang-Jun & Lee, Jong-Wook, 2014, Check-list of Anteoninae R. Perkins, 1912 (Hymenoptera: Dryinidae) of South Korea, with description of a new species, pp. 173-192 in Zootaxa 3802 (2) on page 183, DOI: 10.11646/zootaxa.3802.2.2, http://zenodo.org/record/22890
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