检索结果-南通市图书馆

The application of EPICS in TMSR radiation protection and access control system

在线全文

学校读者我要写书评

暂无评论

Nuclear Science and Techniques 2016年第2期27卷 58-63页

作者： li-feng han Yong-Zhong Chen Jun Cai Hai-Xia Xu Wen-Bo Huang Ning Zhang li-Xin han Peng-Fei Hong Shanghai Institute of Applied Physics Chinese Academy of Science

To treat technical problems of data acquisition,alarm management, and historical data archiving of radiation protection control system in Thorium Molten Salt Reactor, a network prototype system was designed based on experimental physics and industrial control *** level of many locations in Jiading campus of Shanghai Institute of Applied Physics is being continuously monitored, and boundaries of accelerator facilities and radiochemical areas are defined by the access control system. In this paper, we introduce the control system design,including human–machine interfaces, alarm system, historical data archiving system, and the software for access control. The software development followed the standard of Capability Maturity Model Integration(CMMIò) Level3, and the software had passed a third-party test, which indicated that the functionality and the reliability could fulfill the requirements of the radiation protection system.

关键词：访问控制系统辐射防护应用能力成熟度模型史诗工业控制系统放射防护历史数据

Study on the Precursor Phase Composition of Fused Iron Catalyst for Fischer-Tropsch Synthesis

在线全文

学校读者我要写书评

暂无评论

Chinese Chemical Letters 2005年第10期16卷 1393-1396页

作者： Ju li SHEN Hua Zhang liU Xiao Nian li Weng feng han Yi Fan ZHENG Catalysis Institute of Zhejiang University of Technology State Key Laboratory Breeding Base of Green-Chemistry Synthesis Technology Hangzhou 310014

The effect of the precursor composition of fused iron catalyst on the performance of Fischer-Tropsch synthesis was investigated. XRD, BET and CO2 adsorption experiments were carried out to provide better insight into the relationship therein. The results showed that the selectivity of C5＋ hydrocarbon products was dependent on the mole ratio of Fe^2＋/Fe^3＋, which was represented by a hump-shaped curve. Catalysts with precursors containing Fe3O4 phase favored the magnetite spinal formation during F-T reaction, while Fe（1-x）O-based catalysts were more likely to favor the formation and growth of the iron carbide crystals.

关键词： Fischer-Tropsch synthesis fused iron catalyst precursor selectivity.

miR-205 is frequently downregulated in prostate cancer and acts as a tumor suppressor by inhibiting tumor growth

在线全文

学校读者我要写书评

暂无评论

Asian Journal of Andrology 2013年第6期15卷 735-741,I0005页

作者： Ning Wang Qi li Ning-han feng Gong Cheng Zhao-Long Guan Yang Wang Chao Qin Chang-Jun Yin li-Xin Hua Department of Urology First Affiliated Hospital of Nanjing Medical University Nanjing 210029 China

The purpose of this study was to elucidate the molecular mechanisms of microRNA-205 （miR-205） as a tumor suppressor in prostate cancer （PCa）o In the present study, microRNA microarray analysis suggested that the expression of miR-205 was significantly decreased in advanced PCa compared with early PCa. Real-time PCR analysis also indicated that miR-205 expression was significantly decreased in PCa tissues compared with non-cancerous tissues. Moreover, the expression of miR-205 has been demonstrated to be associated with the clinicopathological stage and total/free prostate-specific antigen （PSA） level of PCa. Functional analyses showed that both the overexpression of miR-205 and the knockdown of c-SRC in PCa cell lines could inhibit cell growth, colony formation, migration, invasion and the cell cycle as well as induce cell apoptosis in vitro. Furthermore, over-expressing miR-205 reduced tumorigenicity in vivo. Through a luciferase activity assay and Western blotting, c-SRCwas identified as a target of miR-205 in cells. The overexpression of miR-205 suppressed c-SRC and its downstream signaling molecules, including FAK, p-FAK, ERK1/2 and D-ERK1/2, and attenuated cell proliferation, invasion and tumor growth.

关键词： c-SRC miR-205 prostate cancer (PCa) tumor growth

A modified method for the treatment of urethral fistula after hypospadias repair

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

Asian Journal of Andrology 2012年第6期14卷 900-902页

作者： Chao Qin Wei Wang Shang-Qian Wang Qiang Cao Zeng-Jun Wang Peng-Chao li Jie li Ning-han feng li-Xin Hua Chang-Jun Yin Wei Zhang State Key Laboratory of Reproductive Medicine Department of Urology The First Affiliated Hospital of Nanjing Medical University Nanjing 210029 China

Urethrocutaneous fistula （UCF） is a common complication of hypospadias surgery for severe hypospadias. We report our experience in the management of UCF following hypospadias surgery with a prepuce-degloving method （PDM）. Our study included 87 patients who developed UCF after hypospadias repair from May 2001 to December 2011. Either simple closure or PDM was performed to repair the fistula. In total, 61 patients underwent a simple closure or Y-V plasty of the fistula, and 26 underwent a PDM repair. The success rate was 78.7% for simple closure or Y-V plasty and 96.2% for PDM repair （P〈0.05）. PDM repair represents a good choice for UCF repair after hypospadias, and our high 96.2% success rate demonstrates its applicability.

关键词： hypospadias repair urethrocutaneous fistula

BrФnsted Acidic Ionic liquids: Novel Efficient, Cost-effective and Reusable Solvent-catalysts for Ritter Reaction

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

Chemical Research in Chinese Universities 2010年第3期26卷 384-388页

作者： JIANG feng liN Ying-jie DUAN Hai-feng li Zong-han CAO Jun-gang liANG Da-peng Department of Organic Chemistry College of Chemistry Jilin University Changchun 130012 P. R. China

Several Bronsted acidic ionic liquids（ILs） were synthesized and used as dual solvent-catalysts for the Ritter reaction of benzonitrile with tert-butanol. In particular, IL11（[NSPTEA][OTF]） showed excellent catalytic activity for the Ritter reaction. In the presence of IL11, various nitriles and tertiary alcohols as well as secondary alcohols were converted smoothly to the corresponding amides in good to excellent yields. In addition, this cost-effective ionic liquid [NSPTEA][OTF] was easily separated from the reaction mixture by extraction with a small amount of water, and was recycled five times without any significant loss in activity.

关键词： Bronsted acidic ionic liquid Ritter reaction Solvent-catalyst Article ID

Saponins from Roots of Panax notoginseng

在线全文

学校读者我要写书评

暂无评论

Chinese Herbal Medicines 2014年第2期6卷 159-163页

作者： li-feng han Kaunda Joseph Sakah li-li liu Agyemang Kojo Tao Wang Yi Zhang Institute of Traditional Chinese Medicine Tianjin University of Traditional Chinese Medicine Tianjin State Key Laboratory of Modern Chinese Medicine

Objective To study the chemical constituents in the dried roots of Panax *** The constituents were isolated and purified with chromatographic *** structures were elucidated by spectroscopic methods（1D,2D NMR,UV,IR,[α]D,and HRESI-TOF-MS）and chemical *** Twenty saponins including 20（S）-ginsenoside Rh1（1）,6-O-β-D-（6′-acetyl）-glucopyranosyl-24-ene-dammar-3β,6α,12β,20S-tetraol（2）,ginseno-side Rf（3）,notoginsenoside R2（4）,ginsenoside Rg2（5）,ginsenoside Rg1（6）,notoginsenoside Rt（7）,koryoginsenoside R1（8）,6-O-（β-D-glucopyranosyl）-20-O-（β-D-xylopyranosyl）-3β,6α,12β,20（S）-tetrahydroxy-dammar-24-ene（9）,pseudoginsenoside Rt3（10）,notoginsenoside R1（11）,ginsenoside Re（12）,notoginsenoside N（13）,ginsenoside F1（14）,ginsenoside U（15）,ginsenoside Rk3（16）,3β,12β-dihydroxydammar-（E）-20（22）,24-diene-6-O-β-D-xylopyranosyl-（1→2）-β-D-glucopyranoside（17）,ginsenoside Rh4（18）,pseudoginsenoside Rt5（19）,and vinaginsenoside R22（20）were *** Compounds 2,19,and 20 are isolated from this species for the first *** 1H-NMR data of compound 19 and1H-NMR and 13C-NMR data of compound 20 are first ***,the NMR data ofβ-D-xylopyranosyl group in compound 9 is corrected.

关键词： Araliaceae Panax notoginseng pseudoginsenoside Rt5 saponins vinaginsenoside R22

Spatial modulation for electronic speckle patterns and its demodulation

在线全文

学校读者我要写书评

暂无评论

Optoelectronics Letters 2005年第2期1卷 141-143页

作者： SUN Ping TAO Chun-xian ZhanG li WANG Xiao-feng han Qing College of Physics and Electronics Shondong Normal University Jinan 250014 China

A spatial modulation method for electronic speckle patterns is *** fringes are produced by object tilting and the phase field of deformation is demodulated by Fourier *** principle is *** system and some typical experimental results are *** results prove that by using object tilting method speckle patterns can be modulated very well and the out-of displacement of an object can be obtained effectively.

关键词：空间调制电子模式傅立叶传递相位测量干涉图

Chemical Constituents from Stems of Cistanches deserticola

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 Herbal Medicines 2016年第3期8卷 293-296页

作者： Mavis Boakye-Yiadom li-feng han Wei li Yi Zhang Er-wei liu Xin-bo Song Tao Wang Tianjin State Key Laboratory of Modern Chinese Medicine Tianjin 300193China Inner Mongolia Mandela Sand Industry Development Co. Ltd.Left Banner of Alashan 750300China Clinical Department Centre for Plant Medicine ResearchP O.Box 73Mampong-AkuapemEastern RegionGhana

Objective To study the chemical constituents in the stems or Cisrancnes deserticola. Methods The compounds were purified by various column chromatographic methods and their structures were elucidated by spectroscopic （1 D, 2D NMR, IR, [α]D, and MS） and chemical analyses. Results Seven compounds were isolated and identified as kankanoside D1 （1）, ajugol （2）, cistanin （3）, uridine （4）, adenosine （5）, 6-deoxycatalpol （6）, and kankanoside D （7）. Conclusion Compound 1 is a new compound.

关键词： Cistanches deserticolaY. C. Ma iridoids monoterpenes Orobanchaceae

Cistanches Herba:Chemical Constituents and Pharmacological Effects

在线全文

学校读者我要写书评

暂无评论

Chinese Herbal Medicines 2015年第2期7卷 135-142页

作者： lin–lin Wang Hui Ding He–shui Yu li-feng han Qing-hai Lai li-juan Zhang Xin-bo Song Tianjin University of Traditional Chinese Medicine

Cistanches Herba, known as ‘‘Ginseng of the desert’’, is authenticated from the dried succulent stems of Cistanche deserticola and Cistanche tubulosa. As a famous remedy in China for tonic the kidney, it is used to treat ＂kidney-deficiency syndrome＂-induced diseases such as infertility, forgetfulness, hearing lost, chronic constipation, etc.. As various biological activities, including anti-aging, antioxidant, estrogenic, anti-osteoporotic, and anti- inflammation effects, have been discovered, here we reviewed Cistanches Herba in biological characteristics, chemical constituents, and pharmacological activities.

关键词： bioactive constituents Cistanches Herba pharmacological effects