检索结果-南通市图书馆

Journal of Ocean University of China 2011年第2期10卷 185-190页

作者： jiang qun LI Qi YU Hong KONG Lingfeng Fisheries College Ocean University of China Qingdao 266003 China

The sea cucumber Apostichopus japonicus is a commercially and ecologically important species in China. A total of 3056 potential unigenes were generated after assembling 7597 A. japonicus expressed sequence tags (ESTs) downloaded from Gen-Bank. Two hundred and fifty microsatellite-containing ESTs (8.18%) and 299 simple sequence repeats (SSRs) were detected. The average density of SSRs was 1 per 7.403 kb of EST after redundancy elimination. Di-nucleotide repeat motifs appeared to be the most abundant type with a percentage of 69.90%. Of the 126 primer pairs designed, 90 amplified the expected products and 43 showed polymorphism in 30 individuals tested. The number of alleles per locus ranged from 2 to 26 with an average of 7.0 alleles, and the observed and expected heterozygosities varied from 0.067 to 1.000 and from 0.066 to 0.959, respectively. These new EST-derived microsatellite markers would provide sufficient polymorphism for population genetic studies and genome mapping of this sea cucumber species.

关键词： sea cucumber Apostichopus japonicus microsatellite EST

Role of three-dimensional endoanal ultrasound in assessing the anal sphincter morphology of female patients with chronic proctalgia

在线全文

学校读者我要写书评

暂无评论

World Journal of Gastroenterology 2017年第21期23卷 3900-3906页

作者： Ya-Hong Xue Shu-Qing Ding Yi-jiang Ding Li-qun Pan The National Anorectal Medicine Center of Chinese Medicine the Third Affiliated Hospital of Nanjing University of Traditional Chinese Medicine Nanjing University of Traditional Chinese Medicine

AIM To assess the role of three-dimensional endoanal ultrasound (3D-EAUS) for morphological assessment of the anal sphincter of female patients with chronic proctalgia (CP). METHODS In this unmatched case control study, 30 consecutive female patients with CP and 25 normal women (control group) were enrolled. 3D-EAUS was performed in all subjects. Thickness and length of internal anal sphincter (IAS), thickness of puborectalis muscle (PR), length of the external anal sphincter (EAS) plus PR, and puborectalis angle were measured and compared between the two groups. RESULTS Patients with CP had significantly shorter IAS length and greater PR thickness, as compared to those in normal individuals (26.28 +/- 3.59 mm vs 28.87 +/- 4.84 mm, P 0.05). Puborectalis angle in the CP group was significantly decreased, both in resting (88.23 degrees +/- 1.81 degrees vs 89.94 degrees +/- 2.07 degrees in control group, P 0.05). CONCLUSION The association of greater PR thickness and paradoxical contraction of PR with CP suggest their potential value as markers of CP.

关键词： chronic proctalgia three-dimensional endoanal ultrasound puborectalis angle internal anal sphincter puborectalis muscle

Comparison of performance between rescaled range analysis and rescaled variance analysis in detecting abrupt dynamic change

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Physics B 2015年第4期24卷 581-588页

作者：何文平刘群群姜允迪卢莹 National Climate Center China Meteorological Administration College of Mathematics and Statistics Nanjing University of Information Science and Technology Yangzhou Meteorological Office

In the present paper, a comparison of the performance between moving cutting data-rescaled range analysis （MC- R/S） and moving cutting data-rescaled variance analysis （MC-V/S） is made. The results clearly indicate that the operating efficiency of the MC-R/S algorithm is higher than that of the MC-V/S algorithm. In our numerical test, the computer time consumed by MC-V/S is approximately 25 times that by MC-R/S for an identical window size in artificial data. Except for the difference in operating efficiency, there are no significant differences in performance between MC-R/S and MC-V/S for the abrupt dynamic change detection. Mc-R/s and MC-V/S both display some degree of anti-noise ability. However, it is important to consider the influences of strong noise on the detection results of MC-R/S and MC-V/S in practical application

关键词： moving cutting data-rescaled range analysis moving cutting data-rescaled variance analysis abrupt dynamic change

Identification and alleviation pathways of multidimensional poverty and relative poverty in counties of China

在线全文

学校读者我要写书评

暂无评论

Journal of Geographical Sciences 2021年第12期31卷 1715-1736页

作者： XU Lidan DENG Xiangzheng jiang qun'ou MA Fengkui School of Soil and Water Conservation Beijing Forestry UniversityBeijing 100038China Institute of Geographic Sciences and Natural Resources Research CASBeijing 100101China Key Laboratory of Soil and Water Conservation and Desertification Prevention Beijing Forestry UniversityBeijing 100083China

To realize efficient and sustainable poverty alleviation,this study firstly investigated the identification of multidimensional poverty and relative poverty,and then explored relevant poverty alleviation *** levels in 31 provinces including the autonomous regions and municipalities of China were identified at the county level using the average nighttime light index(ANLI),county multidimensional development index(CMDI),and a method combining multidimensional poverty index and relative poverty *** alleviation pathways for poverty-stricken counties were explored from the aspects of industry,education,tourism and *** results revealed that nearly 60% of counties in China were primarily under relative poverty,most of which were corresponded to light relative *** terms of ANLI and CMDI,63% and 79% of the national poverty-stricken counties,as of 2018,could be identified,suggesting that CMDI had a higher performance for identifying poverty at the county *** terms of poverty alleviation pathways,414,172,442,and 298 poverty-stricken counties were receptive to industry poverty alleviation,education poverty alleviation,tourism poverty alleviation,and agriculture poverty alleviation,and 61%of counties had more poverty-causing factors,implying that multidimensional poverty alleviation is suitable in most of the counties.

关键词： nighttime light index multidimensional poverty relative poverty coupling coordination model targeted poverty alleviation

In situ synthesis of Fe-based alloy clad coatings containing TiB_2–TiN –(h-BN)

在线全文

学校读者我要写书评

暂无评论

International Journal of Minerals,Metallurgy and Materials 2015年第6期22卷 613-619页

作者： Shao-qun jiang Gang Wang Qing-wen Ren Chuan-duo Yang Ze-hua Wang and Ze-hua Zhou College of Mechanics and Materials Hohai University Changzhou Hohai Institute of Science and Technology Limited Liability Company

Fe-based alloy coatings containing TiB2–TiN –（h-BN） were synthesized in situ on Q235 steel substrates by a plasma cladding process using the powders of Fe901 alloy, Ti, and h-BN as raw materials. The effects of Ti/h-BN mass ratio on interfacial bonds between the coating and substrate along with the microstructures and microhardnesses of the coatings were investigated. The results show that the Ti/h-BN mass ratio is a vital factor in the formation of the coatings. Free h-BN can be introduced into the coatings by adding an excess amount of h-BN into the precursor. Decreases in the Ti/h-BN mass ratio improve the microstructural uniformity and compactness and enhance the interfacial bonds of the coatings. At a Ti/h-BN mass ratio of 10/20, the coating is free of cracks and micropores, and mainly consists of Fe-Cr, Fe3B, TiB2, TiN, Ti2N, TiB, FeN, FeB, Fe2B, and h-BN phases. Its average microhardness in the zone between 0.1–2.8 mm from the coating surface is about Hv0.2 551.5.

关键词： iron-based materials coatings plasma cladding in situ synthesis microhardness

High temperature oxidation behavior of Ni-based superalloy GH586 in air

在线全文

学校读者我要写书评

暂无评论

Rare Metals 2017年第11期36卷 878-885页

作者： jiang-Dong Cao Jun-Song Zhang Yin-qun Hua Zhen Rong Rui-Fang Chen Yun-Xia Ye School of Material Science and Engineering Jiangsu UniversityZhenjiang 212013 China Mechanical and Electrical Department Nantong Shipping College Nantong 226010 China School of Mechanical Engineering Jiangsu UniversityZhenj iang 212013 China

In this paper, the isothermal oxidation kinetics and oxidation behavior of GH586 superalloy from 800 to 1000℃ were investigated. The oxide scale morphologies of the surfaces and the cross sections after oxidation were characterized by means of X-ray diffraction （XRD） and scanning electron microscope （SEM） equipped with energy-dispersive spectroscopy （EDS）. The results show that the growth of the oxide scales on the surface of superalloy GH586 obeys a parabolic law with the activa- tion energy of 241.4 ***1-1 from 800 to 1000℃ The dense oxide scale formed at 800℃ is mainly composed of Cr203, NiCr204 and a small amount of TiO2. At 900℃, the oxide scale is divided into two layers： the outer layer with multiple cracks is mainly composed of ＂Cr203 and TiO2, while the inner is a layer of dense Cr203. Under the oxide scale, aluminum-rich oxides along the grain bound- aries are generated by the internal oxidation. At 1000 ℃for 100 h, cracks throughout the whole oxide film accel- erate the oxidation rate of Ni-based superalloy GH586 and large blocks of TiO2 in the oxide scale are generated, resulting in the spallation of oxide scale.

关键词： Ni-based superalloy Internal oxidation Hightemperature oxidation behavior Oxidation kinetics

Effect of Nb on the dynamic recrystallization behavior of high-grade pipeline steels

在线全文

学校读者我要写书评

暂无评论

International Journal of Minerals,Metallurgy and Materials 2010年第6期17卷 742-747页

作者： Tao Niu Yong-lin Kang Hong-wei Gu Yu-qun Yin Ming-liang Qiao Jin-xing jiang School of Materials Science and Engineering University of Science and Technology Beijing Beijing 100083 China State Key Laboratory for Advanced Metals and Materials University of Science and Technology Beijing Beijing 10083 China Nanjing Iron and Steel Co. Ltd. Nanjing 210035 China

The dynamic recrystallization （DRX） behavior of high-grade X80/X100 pipeline steels with different Nb contents was investi- gated through single pass compression experiment using a Gleeble 1500 thermomechanical simulator. By the regression of stress-sWain data obtained in the experiment, the deformation activation energy of DRX was identified, and the critical strain was calculated with the Po- liak-Jonas （P-J） method. Based on the analysis, the occurrence condition and kinetics of DRX were determined. The results show that as the Nb content increases from 0.08wt% to 0.095wt%, the activation energy of recrystallization raises from 365 to 395 kJ/mol. The critical swain of DRX can be determined more accurately by the P-J method, and the ratios of critical swain to peak sWain of XS0 and X100 pipeline steels are 0.51 and 0.49, respectively, which are similar to the results achieved by other researchers and calculated with empirical formulae.

关键词： pipeline steels niobium dynamic recrystallization activation energy retardation kinetics

Ir(Ⅲ)-based Ratiometric Hypoxic Probe for Cell Imaging

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Polymer Science 2023年第5期41卷 794-801,I0011页

作者： Shi-Lu Ji Hua-Min Lan Sen-Sen Zhou Xiao-Ke Zhang Wei-Zhi Chen Xi-qun jiang Department of Polymer Science&Engineering College of Chemistry&Chemical EngineeringNanjing UniversityNanjing 210093China College of Science Nanjing Forestry UniversityNanjing 210037China

Two new ratiometric hypoxia probes(Ir-C343 and Ir-GFP)are synthesized by covalently incorporating florescent internal standard molecules coumarin 343(C343)and green fluorescent protein(GFP)into bis[1-(9,9-dimethyl-9H-fluoren-2-yl)-isoquinoline](succinylacetone)Ir(Ⅲ)(Ir-fliq),*** connecting with internal standard molecules,the Ir-fliq moiety still exhibits high sensitivity to oxygen concentration,while the fluorescence intensity of the internal standard remains relatively constant under different oxygen *** a result,a ratiometric response is realized that is only related to oxygen *** addition,Ir-GFP shows more promising applications in the ratiometric hypoxia imaging of cells due to its long excitation wavelength,good water solubility,high biocompatibility,and low relative fluorescence intensity compared with the phosphorescent emitter Ir-fliq.

关键词： Hypoxia probe Ratiometric probe Hypoxic response Cell imaging

What is the next generation therapeutic strategy for castration-resistant prostate cancer

在线全文

学校读者我要写书评

暂无评论

Asian Journal of Andrology 2015年第2期17卷 223-224页

作者： Si-Meng Wen Chang-Yi Quan Ning jiang Zhi-qun Shang Yuan-Jie Niu Department of Urology Second Hospital of Tianjin Medical University Tianjin China qanjin Institute of Urology Tianjin Medical University Tianjin China.

Prostate cancer （PCa） is one of the most common cancers in the world. Since androgen receptor （AR） signal plays key roles in the PCa progression, targeting androgens via the current androgen deprivation therapy （ADT） is the main therapeutic strategy for advanced PCa. However, most patients who receive ADT, including the second generation anti-androgens enzalutamide （also known as MDV3100） may finally develop the castration （or anti-androgen） resistance after 12-24 months treatment. In the manuscript by Asangani et aL, the authors demonstrated that targeting the amino-terminal bromodomains of BRD4 could preferentially suppress human castration-resistant prostate cancer （CRPC） cell lines. While further studies are required to understand the full impact of their findings, the innovative approach provides a potential novel epigenetic approach for the concerted blockade of oncogenic drivers in CRPC.

关键词： @@

Local Environmental Dependence of Galaxy Properties in a Volume-Limited Sample of Main Galaxies

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Journal of Astronomy and Astrophysics 2007年第5期7卷 639-648页

作者： Xin-Fa Deng Ji-Zhou He qun Zhang Xiao-Xia Qian Peng jiang Yong Xin School of Science Nanchang University Nanchang 330031

Using a volume-limited sample of Main Galaxies from SDSS Data Release 5, we investigate the dependence of galaxy properties on local environment. For each galaxy, a local three-dimensional density is calculated. We find that the galaxy morphological type depends strongly on the local environment; galaxies in dense environments have predominantly early type morphologies. Galaxy colors have only a weak dependence on the environment. This puts an important constraint on the process of galaxy formation.

关键词： galaxy distances and redshifts -- galaxies statistics