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STRUCTURE OF 1-BROMOMETHYL-7, 7-DIMETHYLBICYCLO[2.2.1]HEPT-2-YL ACRYLATE AND THE PROPERTIES OF ITS POLYMER

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Chinese Chemical Letters 1992年第10期3卷 833-836页

作者： Xin Ru JIA ming Qian LI Ji Ping SHAO Shuo jian jianG Chemistry Department Peking UniversityBeijing 100871

In this paper, the structure of 1-bromomethyl-7,7-dimethyl btcyclo[2.2.1]hept-2-yl acrylate has been studied by X-ray diffraction, and the relation between the molecular structure and the properties of polymerization ... 详细信息

关键词： Poly STRUCTURE OF 1-BROMOMETHYL-7 DIMETHYLBICYCLO[2.2.1]HEPT-2-YL ACRYLATE AND THE PROPERTIES OF ITS POLYMER ITS

IDENTIFICATION OF MYCOBACTERIUM MARINUM 65 KD HEAT SHOCK PROTEIN GENE BY POLYMERASE CHAIN REACTION RESTRICTION ANALYSIS FROM LESIONS OF SWIMming POOL GRANULOMA

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Chinese Medical Journal 2006年第1期119卷 43-48页

作者： CAI Lin CHEN Xue ZHAO Ting ding Bei-chuan ZHANG jian-zhong Department of Dermatology Peking University People＇s Hospital Beijing 100044 China Beijing Institute for Tuberculosis Control Beijing 100035 China

Background Nontuberculous mycobacterium （NTM） had been reported to cause cutaneous infections which are difficult to interpret due to the variability of the clinical manifestations. Among NTM infections, Mycobacterium marinum （M. marinum） are mostly seen to cause skin infection. It is therefore important to establish a rapid approach for detection and identification of M. marinum from lesions of patients with suspected M. marinum infections. Methods Specimens were obtained from 5 patients with swimming pool granuloma. DNA was extracted and polymerase chain reaction （PCR） was performed. PCR products were digested with Hae III and BstE II, then analysed by pattern restriction analysis to detect heat shock protein （hsp） 65 kD gene. Results The 65 kD hsp gene was found in all specimens from patients with swimming pool granuloma. PCR restriction analysis （PRA） identified all 5 samples to be M. marinum infections, and the result was consistent with that of routine bacteriological identification. The lesions subsided or markedly improved upon treatment. Conclusions PRA is a sensitive, specific and rapid method in identification of mycobacteria. Application of this method will be helpful for early diagnosis of mycobacterial skin infections.

关键词： skin diseases, infectious polymerase chain reaction restriction

A Quantum Secret Sharing Scheme Using Orbital Angular Momentum onto Multiple Spin States Based on Fibonacci Compression Encoding

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Communications in Theoretical Physics 2018年第10期70卷 384-390页

作者： Hong Lai ming-Xing Luo Yong-jian Xu Josef Pieprzyk Jun Zhang Lei Pan Mehmet A.Orgun School of Computer and Information Science and Centre for Research and Innovation in Software Engineering（RISE） Southwest UniversityChongqing 400715China Information Security and National Computing Grid Laboratory School of Information Science and TechnologySouthwest Jiaotong UniversityChengdu 610031China Data61 Commonwealth Scientific and Industrial Research OrganisationSydneyAustralia Institute of Computer Science Polish Academy of SciencesWarsaw01-248Poland School of Software and Electrical Engineering Swinburne University of TechnologyHawthornVIC3122Australia School of Information Technology Deakin UniversityGeelongVIC3220Australia Department of Computing Macquarie UniversitySydneyNSW 2109Australia Faculty of Information Technology Macao University of Science and TechnologyAvenida Wai LongTaipa999078Macao

Since the use of a quantum channel is very expensive for transmitting large messages, it is vital to develop an effective quantum compression encoding scheme that is easy to implement. Given that, with the single-photon spin-orbit entanglement, we propose a quantum secret sharing scheme using orbital angular momentum onto multiple spin states based on Fibonacci compression encoding. In our proposed scheme, we can represent the frequency of any secret message which is typically collection of bits encodings of text or integers as a bitstring using the base Fibonacci sequence, which is encoded multiple spin states for secret shares transmitted to participants. We demonstrate that Fibonacci compression encoding carries excellent properties that enable us to achieve more robust quantum secret sharing schemes with fewer number of photons.

关键词： spin-orbit entanglement multiple spin states Fibonacci compression encoding quantum secretsharing

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低维半导体偏振光探测器研究进展

物理学报 2019年第16期68卷 1-14页

作者：魏钟鸣夏建白中国科学院半导体研究所半导体超晶格国家重点实验室

偏振光探测在遥感成像、环境监测、医疗检测和军事设备等领域都具有很好的应用价值,目前已经有一系列偏振探测和成像产品.随着信息器件进一步小型化、集成化,基于新型低维材料的偏振光探测器可以直接利用材料本征的各向异性对偏振光进... 详细信息

偏振光探测在遥感成像、环境监测、医疗检测和军事设备等领域都具有很好的应用价值,目前已经有一系列偏振探测和成像产品.随着信息器件进一步小型化、集成化,基于新型低维材料的偏振光探测器可以直接利用材料本征的各向异性对偏振光进行感知,在未来偏振光探测领域有很好的应用前景.很多二维/一维半导体材料,例如:黑磷, ReS2, GaTe, GeSe, GeAs 及 ZrS3 等,都具有较强的本征面内各向异性,可以用于高性能偏振光探测器.基于此类低维半导体材料设计的不同结构类型的偏振光探测器已经覆盖了紫外、可见以及红外等多个波段.本文总结了近年来相关领域的研究进展和我们课题组的一些工作.

关键词：光探测器偏振低维半导体二维材料

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起重机下沉量偏大问题的分析与改进

液压气动与密封 2024年第3期44卷 114-118页

作者：吕明亮郭建伟马跃峰张庆生崔伟北京航天发射技术研究所北京100076 山西清华机械厂山西长治046000

某特种起重机要求在特定工况具有高精度位置保持功能,针对其下沉量偏大问题进行了原因分析,定位于油液的热胀冷缩性对下沉量的影响,针对该问题,进行了油液热胀冷缩性对下沉量影响机理分析,提出了增加温控闭环的低成本改进措施,并经试验... 详细信息

某特种起重机要求在特定工况具有高精度位置保持功能,针对其下沉量偏大问题进行了原因分析,定位于油液的热胀冷缩性对下沉量的影响,针对该问题,进行了油液热胀冷缩性对下沉量影响机理分析,提出了增加温控闭环的低成本改进措施,并经试验验证,结果表明改进措施效果良好。

关键词：起重机下沉量温控闭环分析与改进

Relationships Between Icariin and Anti-Apoptotic miRNA-21 in Mouse Blastocyst Development In vitro

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Journal of Integrative Agriculture 2013年第4期12卷 663-669页

作者： SHI Ya-ran WANG Zhan-he CAO Yong-chun LU Yan TIAN Jin-ling ZhANG Chao JIA Zi-ye CHEN Wu GAO jian-ming Animal Science and Technology College Beijing University of Agriculture

In this study, the effect of icariin, a flavonoid from the Chinese traditional medicine epimedium, on miRNA-21 of mouse developmental blastocysts in vitro and the development of preimplantation embryos were studied. The possible effective targets of icariin promoting preimplantation embryo development in vitro and anti-apoptosis were determined. The embryos were cultured in modified CZB medium （mCZB） as control group. The experimental group （Ica group） was supplemented with 0.6 μg mL-1 icariin. Mouse pronuclear embryos were cultured in vitro until blastocysts. The development rates of preimplantation embryos were observed. The total cell number, apoptotic cell number and the rate of apoptotic cells in blastocysts were analysed by the staining of Hoechst33342 and labeling of TUNEL and detected under a laser confocal scanning microscope. The miRNA-21 expression, the mRNA levels of pro-apoptotic Caspase3, and the target genes of miRNA-21： pro-apoptotic PTEN, anti-apoptotic Bcl-2 were detected by real-time RT-PCR. The results showed that percentages of morulaes and blastocysts in Ica group were both extremely higher than control group （（85.14±6.57）% vs. （72.04±11.58）%; （82.50±7.11）% vs. （66.80±11.70）%, respectively, P〈0.01）. The total cell number ofblastocysts had extreme difference between Ica group and control group （（61.40±9.64） vs. （46.23±4.50）, P〈0.01）. The apoptotic cell number and rate of apoptotic cells of blastocysts were both reduced in Ica group （（1.47±0.51） vs. （2.94±0.66）; （2.40±0.27）% vs. （6.25±0.62）%, respectively, P〈0.01）. Compared to control group, addition of icariin into mCZB extremely increased the expression of anti-apoptotic miRNA-21 （P〈0.01）, down-regulated pro-apoptotic Caspase3 （P〈0.05） and PTEN （P〈0.01）, up-regulated anti-apoptotic Bcl-2 （P〈0.01）. In conclusion, icariin could reduce the apoptosis, promote the embryo development in vitro by enhancing miRNA-21 expression to up-regulated anti-apoptotic genes and down-regulated pro- apoptotic genes

关键词： blastocysts icariin miRNA-21 anti-apoptosis mice

Frequent ventricular premature beats increase blood pressure variability in rats

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Acta Pharmacologica Sinica 2004年第5期25卷 3-11页

作者： Chao-yu MIAO2, Li-ping XU, jian-guo LIU, He-hui XIE, Wen-jun YUAN, ding-feng SU2Department of Pharmacology, Second Military Medical University, Shanghai 200433, China Department of Pharmacology Second Military Medical University 上海 200433

AIM: The present study was designed to test a hypothesis that nonfatal ventricular arrhythmia such as ventricularpremature beats (VPB) is a contributing factor in the elevation of blood pressure variability (BPV). METHODS:Blood pressure (BP) and electrocardiogram were continuously recorded. The relation between VPB and BPV wasobserved under conscious state in chronic myocardial infarction (MI) rats one month after ligation of the leftcoronary artery, and further verified under anesthetized state in rat model of ventricular arrhythmia produced byacute intravenous infusion of aconitine. RESULTS: MI rats exhibited a big difference in the count and pattern ofVPB, and were divided into no VPB, occasional VPB, and frequent VPB groups. Among the three groups, therewere no differences in BP, heart period (HP), and MI size. However, BPV was markedly higher in frequent notoccasional VPB rats, and HP variability (HPV) was larger in both frequent and occasional VPB rats, when comparedwith no VPB rats. In the whole population of MI rats, BPV was positively correlated with VPB and HPV, not withBP, HP and MI size. Infusion of aconitine had no effect on BP, HP, BPV, and HPV during the period without *** VPB after several minutes of aconitine infusion induced significant increase in BPV and HPV with nochange in BP and HP. BPV was also positively correlated with VPB and HPV, not with BP and HP. Hemodynamicsin aconitine-evoked ventricular tachycardia was characterized as lower BP, higher BPV, and higher ***: High BPV can be caused by frequent not occasional VPB in rats.

关键词： arrhythmia blood pressure variability heart period variability

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隐匿直肠穿孔继发臀部感染致休克抢救1例

中国现代普通外科进展 2024年第8期27卷 666-667页

作者：胡明华丁伟王小明黄德刚周玉梅曾美红沈光贵姜晓敢皖南医学院弋矶山医院肝胆外科安徽芜湖241001 皖南医学院弋矶山医院烧伤整形外科安徽芜湖241001 皖南医学院弋矶山医院关节骨科安徽芜湖241001 皖南医学院弋矶山医院麻醉科安徽芜湖241001 皖南医学院弋矶山医院重症监护科安徽芜湖241001

直肠损伤因损伤部位、损伤程度、穿孔时间不同,临床表现亦有差异。我院收治1例直肠损伤患者,穿孔部位隐匿,合并迟发性感染性休克,发病凶险,治疗过程复杂,经积极抢救,共行4次手术,预后良好,总结报告如下。

关键词：直肠穿孔软组织感染感染性休克

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重尾性操作风险的风险价值置信区间的灵敏度

系统工程理论与实践 2009年第6期29卷 59-67页

作者：莫建明周宗放电子科技大学经济与管理学院成都610054 四川交通职业技术学院成都611130

根据操作风险价值不确定度的合成机理,通过对重尾性操作风险价值解析解的分析,导出高置信度下重尾性操作风险价值的标准不确定度及置信区间.进而以弹性分析方法对该置信区间的灵敏度进行理论探讨和实例分析后发现:随尾指数的增大,操作... 详细信息

根据操作风险价值不确定度的合成机理,通过对重尾性操作风险价值解析解的分析,导出高置信度下重尾性操作风险价值的标准不确定度及置信区间.进而以弹性分析方法对该置信区间的灵敏度进行理论探讨和实例分析后发现:随尾指数的增大,操作风险价值及其置信区间长度同时增大,且在高置信度下,尾指数是影响操作风险价值及其置信区间长度灵敏度的关键参数.据此,可将尾指数作为操作风险的监控参数,操作风险监管资本的提取方式可改进为:以操作风险价值的某一置信区间为监管资本的控制范围.这在理论上进一步完善了损失分布法在操作风险度量中的应用,并使操作风险的管理更加合理.

关键词：操作风险操作风险价值的置信区间不确定性传递理论弹性理论