222 research outputs found
Mien (Daping) audio word list
No full text<p>On May 7, 2013, I visited Wantai, Daping Township, Hezhou City 贺州市大平乡万太组 (or Wantai 湾太, Longcao Village 龙曹村, Daping Township 大平瑶族乡, Hezhou City) in Guangxi, China. My informant was an elderly man named Deng Rushan 邓如山 (February 1943). He was a Mien speaking belonging to the Guoshan Yao 过山瑶 group, whom he said are also known as the Pingtou Yao 平头瑶. His ancestors had migrated from Wuguang 梧广. Deng also told me that there are Jian Yao 尖瑶 in Qingshui Village, Gonghui Township (公会镇清水村) and in Huangdong 黄洞瑶族乡.</p>https://sites.google.com/site/msealangs/hmong-mien/mien-dapin
Balanced Neural Architecture Search and Its Application in Specific Emitter Identification
No full textThe performance of a single neural network can vary unexpectedly corresponding to different classification tasks, and thus the network with fixed structure may lack flexibility and often lead to overfitting or underfitting. It is urgent, also the main objective of this paper, to deal with the limitation of the fixed neural network structure on classifying radar signals in different electromagnetic environments. We in this paper propose a variable network architecture search (NAS) mechanism, called balanced-NAS framework, and apply it in specific emitter identification (SEI) to greatly improve the flexibility of model searching. In the proposed balanced-NAS framework, a 'block-cell' structure and a controller based recurrent neural network (RNN) are utilized to design models automatically according to external environment. In particular, a balance function is also proposed and utilized in the balanced-NAS framework, acting on the RNN controller to take both the validation accuracy and computational budget into consideration while searching for ideal models. The efficiency of the searching process is further enhanced by exploiting a progressive strategy to design simple and complicate child models where unpromising ones after each evaluation process are obsoleted to release searching space. Simulations and experiments indicate that the proposed balanced-NAS framework is extremely efficient and outperforms the conventional algorithms in classifying radar signals in different environments.</p
Correction: Zhang et al. The Impact of Green Financial Policy on the Regional Economic Development Level and AQI—Evidence from Zhejiang Province, China. Sustainability 2023, 15, 4068
No full textRegarding the author correction request, it has been clarified that the original paper was composed by Daping Zhang, Pinzhen Cheng, Minxing Wang, Zhenming Chen and Lufei Huang [...
Oxidation stability of nanographite materials
No full textNanographite materials (NGMs), e.g., carbon nanotubes and graphene, have attracted great attention owing to their unique electronic and structural properties which make them promising for applications in Li-ion batteries, [ 1 ] functional composites, [ 2 ] fuel cells, [ 3 ] supercapacitors, [ 4 ] nano-electromechanical systems [ 5 ] and photovoltaic devices. [ 6 ] However, when NGMs are used as supports of catalysts or active components in electrochemical devices (such as fuel cells), their oxidation and corrosion could lead to a severe degradation of the catalyst which eventually affects the whole performance of the electrochemical systems. Therefore, understanding the oxidation stability of NGMs is essential in order to develop new robust nanoscale devices.© 2013 WILEY-VCH Verlag GmbH and Co. KGaA, Weinheim.Huaiguang Li, Niancai Cheng, Yao Zheng, Xiao Zhang, Haifeng Lv, Daping He, Mu Pan, Freddy Kleitz, Shi Zhang Qiao and Shichun M
The direct electrocatalysis of phenazine-1-carboxylic acid excreted by Pseudomonas alcaliphila under alkaline condition in microbial fuel cells
No full textIn this paper, we reported a kind of exoelectrogens. Pseudomonas alcaliphila (P. alcaliphila) strain MBR. which could excrete phenazine-1-carboxylic acid (PCA) to transfer electron under alkaline condition in microbial fuel cells (MFCs). The electrochemical activity of strain MBR and the extracellular electron transfer mechanism in MFCs were evaluated by cyclic voltammetry (CV) and electricity generation curve measurement. The results indicated a soluble mediator was the key factor for extracellular electron transfer of strain MBR under alkaline condition. The soluble mediator was PCA detected by gas chromatography-mass (GC-MS) analyses. (C) 2011 Elsevier Ltd. All rights reserved
Gene Expression Profile Determination in Rat Retinal Tissue after Ocular Hypertension through Oligo Microarray
No full textIncreased intraocular pressure is the main cause of glaucoma development. However, the systemic information of genes related to ocular hypertension has not yet been clarified. In the present study, oligomicroarray determined the profile of gene expression in the retina after ocular hypertension. A rat ocular hypertension model was constructed through photocoagulation by diode lasers. On postoperative days 7, 35, 60, 90, 180 and 360, the intraocular pressure and the gene expression profile were determined using an ophthalmotonometer and an Oligochip containing 35,000 oligonucleotides, respectively. Oligochip reliability was verified by real-time PCR, and the Oligochip data were analyzed through functional distribution analysis. In our study, we found that the intraocular pressure was significantly increased in a time-dependent manner but returned to the normal level on postoperative day 360. We also found that 1,692 genes were differentially expressed, including 719 upregulated and 973 downregulated genes. The chi(2) value of gene clusters related to transport function is significantly higher than that of other gene clusters as determined through function distribution analysis, suggesting that this group of genes plays an important role in the repair process of the optical nerve. In conclusion, the gene expression pattern at different time points of ocular hypertension was determined, which may contribute to clarify the molecular mechanism of glaucoma and to establish better therapeutic strategies to treat glaucoma. Copyright (C) 2010 S. Karger AG, Baselhttp://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000281237300001&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701OphthalmologySCI(E)0ARTICLE257-644
Helorus antefurcalis He & Xu 2015
No full textHelorus antefurcalis He & Xu, 2015 Figures 1–24 Helorus antefurcalis He & Xu, 2015: 733, 744–746, 983, 984. Material. 2 ♀ (NWUX), “NW. China: Shaanxi, Hetaoba, Changqing [Nature] Res [erve], c. 1417 m, y[ellow Malaise] trap, 27.ix.–8.xi.2016, 33.65°N 107.57°E, Lin-Peng Zhao, NWUX ”; 2 ♀ (NWUX, RMNH), “NW China: Shaanxi, Wowadian, Changqing N. R., yellow Malaise trap, 2237 m, 2.ix.–2.xi.2017, 33.70°N 107.62°E, Lin-Peng Zhao, NWUX ”; 1 ♀ (RMNH), “NW China: Shaanxi, Daping post, Yangxian, Changqing N. R., b[lack] Mal [aise] trap, 2029 m, 2.ix.–2.xi.2017, 33.68°N 107.60°E, Lin-Peng Zhao, NWUX ”; 1 ♀ + 3 ♂ (NWUX, RMNH), “NW. China: Shaanxi, Pingheliang, Ningshaan, 33.47°N 108.50°E, 17.viii–1.x.2016, 2188 m, b[lack] Mal[aise] trap, J-L Tan & Q-Q Tan, NWUX ”; 1 ♂ (NWUX), id., but 22.x.2017, 2105 m; 1 ♀ (NWUX), id. but swept, 17.viii.2016, J-L Tan; 5 ♂ + 1 ♀ (NWUX), “NW China: Shaanxi, Qinling Mts, Baolongyu, c. 1000 m, 26.viii.–2.xi.2018, 34°03’N 108°09’E, Q-Q Tan & R-N Zhang ”; 1 ♂ (NWUX), “NW. China: Shaanxi, Dapingshaosuo, Changqing Nat [ure] Res [erve], Yangxian, Hanzhong, 33.69°N 107.51°E, 27.vii.–2.ix.2017, 2029 m, y[ellow] Mal[aise] trap, Lin-Peng Zhao, NWUX ”; 1 ♀ (NWUX), “NW China: Shaanxi, along the road of Taibai Daguanzi to Huangbaiyuan, c. 1549 m, 26.vi.2015, 34.06°N 107.32°E, Jiangli Tan & Qingqing Tan, NWUX ”; 1 ♂ (NWUX), “NW China: Shaanxi, Xunyangba, Ningshaan, 1481 m, 17.viii.–3.x.2016, 33.54°N 108.55°E, y[ellow]/g[reen] Mal[aise] trap, Jiangli Tan, NWUX ”; 1 ♂ (NWUX), “NW China: Shaanxi, Liangfengya, Foping, 1729 m, 19.viii.–13.xi.2016, 33.00°N 107.90°E, y[ellow] Mal[aise] trap, J-L & Q-Q Tan, NWUX ”; 1 ♀ (NWUX), “NW China: Shaanxi, from Huangguan to Xunyangba, Ningshaan, 1236 m, 1.vii.–17.viii.2016, 33.54°N 105.36°E, black Mal[aise] trap, J-L Tan & Q-Q Tan, NWUX ”; 1 ♀ (NWUX), “NW China: Shaanxi, Luonan, Shangluo, yellow Malaise trap, garden, 1006 m, xii.2017 – 17.vi.2018, 34.02°N 110.10°E, R-N Zhang & Q-Q Tan, NWUX ”; 1 ♀ (NWUX), “NW China: Ningxia, Liupan Mt., Jingyuan Erlonghe For [est] Farm, c. 1800 m, 2.vii.2015, 35°23'24”N 106°20'41.43”E, Jiang-li Tan, NWUX ”. Redescription. Female from Hetaoba, length of body 4.1 mm, and of fore wing 3.1 mm. Head. Antenna as long as fore wing; first flagellomere 1.2 × as long as second one, first, second and penultimate flagellomeres 7.7, 6.4 and 3.2 × as long as wide (Fig. 2); OOL:OD:POL = 19:8:19; length of eye in dorsal view 1.2 × temple (Fig. 9); temple, face and vertex smooth, shiny and setose (Figs 9, 10). Mesosoma. Length of mesosoma 1.5 × as long as high (Fig. 4); pronotal side largely smooth, but posteriorly and medially crenulate and with some rugae (Fig. 3); mesopleuron largely smooth, but medially moderately punctate; median part of mesopleuron glabrous; mesoscutum smooth and with distinct notauli; scutellum smooth, weakly convex and nearly semicircular; scutellar sulcus wide, deep and coarsely crenulate; metapleuron reticulate-rugose; propodeum coarsely reticulate-rugose and with a medio-longitudinal carina. Wings. Fore wing: pterostigma triangular and 2.4 × longer than its maximum width (Fig. 11); vein cu-a distinctly antefurcal; vein r of fore wing 0.6 × width of pterostigma and slender; vein 1-R1 0.9 × as long as pterostigma; basal cells sparsely setose, except near costal cell. Legs. Length of femur, tibia and basitarsus of hind leg 4.6, 5.9 and 7.0 × their width, respectively (Fig. 12); hind basitarsus 1.9 × as long as second tarsus. Metasoma. First metasomal tergite in dorsal view 4.1 × as long as its maximum width and in lateral view 3.7 × as long as wide (Figs 5, 6), and with nearly longitudinal rugae; remainder of metasoma smooth and have many setae (Fig. 7); hypopygium slight shiny and setose. Colour. Black; scape and pedicel largely dark brown, flagellum pale yellowish but yellowish brown apically; mandible ivory except brownish teeth; palpi, and tegulae yellowish; base of hind tibia pale yellowish; apical third of hind coxa, basal half of hind femur and narrowly its apex, yellowish brown; hind trochanter trochantellus and tarsus yellowish; remainder of hind leg more or less dark brown; veins brown; basal 0.6 of pterostigma dark brown, remainder of pterostigma largely yellow and paler than vein 1-R1 (Fig. 11). Variation. First flagellomere 3.6–7.7 × as long as wide; vein 1- R1 of fore wing 1.0-1.2 × length of pterostigma; pterostigma 2.4–3.6 × longer than its maximum width; vein cu-a of fore wing slightly antefurcal or interstitial, but rather frequently distinctly antefurcal (Fig. 11), but usually less than depicted in Fig. 6 in He & Xu (2015); first discal cell of fore wing 2.0–2.7 × longer than high; first metasomal tergite in dorsal view 4.1–4.5 × as long as its maximum width and in lateral view 3.7–4.3 × as long as wide; length of fore wing 4.3–5.5 mm. The types of H. antefurcalis have the hind femur largely or entirely black apically, but especially in females (the depicted type specimens in the original description is a male) the apex is more or less yellow. The fore leg of females is always yellow in the series from Shaanxi (except one female from Luonan with dark brown fore and middle coxae), but in the type series the femur and tibia are more or less darkened. In general, the males of this species have darker legs and pterostigma than the females, but the female from Luonan has the pterostigma entirely dark brown. Male. Pterostigma entirely black or dark brown; fore and middle femora largely and apex of hind femur dark brown; first metasomal tergite less slender; vein 1-R1 of fore wing 0.9–1.2 × length of pterostigma; length of fore wing 3.8–5.0 mm. Biology. Unknown. Distribution. China (Ningxia, Shaanxi, Sichuan). New for Shaanxi. Discussion. After examination of the series from Shaanxi it is obvious that the position of the vein cu-a of the fore wing (distinctly antefurcal or interstitial) as key character is close to useless (as was noticed by Buffington & Copeland (2016) for the Afrotropical H. elgoni). The position of vein cu-a of the fore wing is in both H. elgoni and H. alborzicus highly variable: from far antefurcal to interstitial and in both species specimens are found to have the position very different between both wings (Buffington & Copeland 2016; personal observation). However, their conclusion that because of this observation H. elgoni is a junior synonym of H. rufipes is not accepted. From their well-illustrated redescription it is obvious that two species are involved: H. elgoni with the pterostigma more than 3 × longer than wide and the posterior margin of pterostigma nearly straight (Fig. 13 in Buffington & Copeland 2016) and H. ruficornis (pterostigma about twice as wide as long and its posterior margin curved; Figs. 14, l.c.). Therefore, we re-instate H. elgoni as valid species and include it in the key.Published as part of Zhang, Ruo-Nan, Achterberg, Cornelis Van, Tian, Xiao-Xia, He, Cheng-Yi & Tan, Jiang-Li, 2020, Sexual variation in two species of Helorus Latreille (Hymenoptera, Heloridae) from NW China, with description of female of Helorus caii He & Xu, pp. 570-584 in Zootaxa 4821 (3) on pages 573-577, DOI: 10.11646/zootaxa.4821.3.8, http://zenodo.org/record/440111
Fatigue crack growth in ceramics containing a viscous grain boundary phase at elevated temperatures
No full textElevated-temperature crack growth behavior in a commercial Al\sb2O\sb3 and a hot-pressed 30 vol.% TiB\sb2-SiC composite was examined under tensile static loading (static fatigue) and tension-tension cyclic loading (cyclic fatigue). The study was carried out at temperatures of 700-900\sp\circC, where the vitreous grain boundary phase flowed viscously. Experimental results have shown the existence of cyclic fatigue in these materials, but the cyclic effect cannot be seen as the consequence of a static fatigue mechanism, although under both cyclic and static loading conditions crack propagation assumed an intergranular fracture mode. The testing temperature, load ratio, and cyclic frequency were found to exert significant effects on cyclic fatigue-crack growth behavior. A damage zone was observed ahead of the crack tip in which grain boundary cavitation (or microcracking) occurred during fatigue-crack growth. An analytical model based upon the damage accumulation in the grain boundary phase was developed that successfully predicted the frequency and load ratio dependencies of crack growth. Values of activation energy for cyclic and static fatigue crack growth were approximately the same. Fracture mechanisms in both cases were also found to be similar. However, crack growth under static loads was faster than that under cyclic loads at the same maximum stress intensity. Such a difference in the growth rate suggested that the damage accumulation in the grain boundary phase differed during cyclic and static fatigue processes. In the TiB\sb2-SiC composite, cyclic fatigue-crack growth at elevated temperatures was affected by oxide-induced crack closure and showed an anomalous temperature dependence. After subtracting crack closure, cyclic fatigue-crack growth exhibited a temperature dependence that was governed by the viscous flow of the grain boundary phase.Made available in DSpace on 2011-05-07T14:23:12Z (GMT). No. of bitstreams: 2
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Intrinsically microporous polymer retains porosity in vacuum thermolysis to electroactive heterocarbon
No full textGeological Significance of Neoproterozoic Intrusive Rocks in the South Section of the Ailaoshan Orogenic Belt, SW China: Insights from Petrology, Geochemistry, and Geochronology
No full textThe Ailaoshan orogenic belt is one of the most significant orogenic belts in the southeastern margin of the Qinghai–Tibet Plateau. The widely developed magmatic rocks in this belt preserve the multi-stage tectonic evolution records of the South China Plate. As an important response to the Rodinia breakup tectonic event, the study of Neoproterozoic magmatic rocks in the area is of great significance for reconstructing the Neoproterozoic tectonic process of the Ailaoshan orogenic belt and the tectonic evolution of the South China Plate. Petrology, geochemistry, zircon U-Pb, and Lu-Hf isotopes of the Daping pluton in the Ailaoshan orogenic belt are studied in this paper. The Daping pluton is mainly divided into gabbros and granites. Gabbros and granites belong to the sub-alkaline series, which are relatively enriched in large ion lithophilic elements and depleted in high-field strength elements. The ΣREE contents of the gabbro are low with enrichment in LREEs and depletion in HREEs, and the degree of differentiation of light and heavy rare earth is low, with positive δEu and weak negative δCe anomalies. The ΣREE contents of the granite are low with enrichment in LREEs and depletion in HREEs, and the degree of light and heavy rare earth differentiation is high, with medium–weak negative δEu and weak positive δCe anomalies, suggesting an A2-type granite with A1-A2 transition characteristics. The weighted average age of the gabbro is 816.1 ± 4.1 Ma (MSWD = 0.11), with zircon εHf(t) values of −7.5–5.5. The magma source is a mixture of an ancient crust source and a new mantle source; the weighted average age of the syenogranite is 783.7 ± 8.1 Ma (MSWD = 1.4), with zircon εHf(t) values of −4.3–0.4. The magma source is mainly ancient crustal material (Ailaoshan Group), mixed with a small amount of mantle-derived material; the weighted average age of the monzogranite is 754.8 ± 6.1 Ma (MSWD = 3.0), with positive zircon εHf(t) values of 1.65–10.36. The magma source is a mixture of a large number of mantle-derived materials and a small number of crust-derived materials (Ailaoshan Group). The Daping pluton was formed in the transitional tectonic environment from post-collision to intraplate continental margin rift, corresponding to the Rodinia breakup process in the western margin of the South China Plate
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