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PERIODIC SOLUTIONS FOR HAMILTONIANSYSTEMS IN A NONCONVEX POTENTIAL wELL

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Acta Mathematica Scientia 1992年第2期12卷 171-178页

作者：李树杰 int. Cent. for Theo. Phys. Trieste Italy Scuola int. Superiore di Studi Avanzati Trieste Italy

Recently there has been a considerable amount of work on the existence of Tperiodic solutions for Hamiltonian systems with singular potentials, (see [1]—[7],[10], [11], [13], [14]). In this paper we will study the ex... 详细信息

关键词： PERIODIC SOLUTIONS FOR HAMILTONIANSYSTEMS IN A NONCONVEX POTENTIAL wELL 门刀 Pro

Distortion Regions near the Grain Boundary and Their Effects on Nanocrystalline Materials

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Journal of Materials Science & Technology 2000年第6期16卷 554-558页

作者： Lung C.w. Long k. Tian E.k. Liang Z.J. int. Cent. for Mater. Phys. Chinese Acad. of Sci. Shenyang 110015 China

The distortion regions near grain boundaries in α-Fe-C solid solution were studied by the use of internal friction method. It is found that the total thickness of these regions is quite large though the thickness of real grain boundaries is usually very thin. It is also found that the smaller the grain size is, the thicker the total distortion region is got. A model for the structure of distortion regions near grain boundaries is proposed. Their effects on nanocrystalline materials are discussed.

关键词： Distortion Regions near the Grain Boundary and Their Effects on Nanocrystalline Materials

Blue emitting exciplex for yellow and white organic light‑emitting diodes

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Frontiers of Optoelectronics 2023年第4期16卷 191-203页

作者： kavya Rajeev C.k.Vipin Anjali k.Sajeev Atul Shukla Sarah k.M.McGregor Shih‑Chun Lo Ebinazar B.Namdas k.N.Narayanan Unni Centre for Sustainable Energy Technologies CSIR-National Institute for Interdisciplinary Science and TechnologyThiruvananthapuram 695019India Academy of Scientifc and Innovative Research(AcSIR) Ghaziabad 201002India Centre for Organic Photonics&Electronics The University of QueenslandBrisbaneQLD 4072Australia School of Mathematics and Physics The University of QueenslandBrisbaneQLD 4072Australia School of Chemistry and Molecular Biosciences The University of QueenslandBrisbaneQLD 4072Australia

white organic light-emitting diodes(wOLEDs)have several desirable features,but their commercialization is hindered by the poor stability of blue light emitters and high production costs due to complicated device ***,we investigate a standard blue emitting hole transporting material(HTM)N,N'-bis(naphthalen-1-yl)-N,N'-bis(phenyl)benzidine(NPB)and its exciplex emission upon combining with a suitable electron transporting material(ETM),3-(biphenyl-4-yl)-5-(4-tert-butylphenyl)-4-phenyl-4H-1,2,4-triazole(TAZ).Blue and yellow OLEDs with simple device structures are developed by using a blend layer,NPB:TAZ,as a blue emitter as well as a host for yellow phosphorescent dopant iridium(III)bis(4-phenylthieno[3,2-c]pyridinato-N,C2')acetylacetonate(PO-01).Strategic device design then exploits the ambipolar charge transport properties of tetracene as a spacer layer to connect these blue and yellow emitting *** tetracene-linked device demonstrates more promising results compared to those using a conventional charge generation layer(CGL).Judicious choice of the spacer prevents exciton difusion from the blue emitter unit,yet facilitates charge carrier transport to the yellow emitter unit to enable additional exciplex *** complementary behavior of the spacer improves the blue emission properties concomitantly yielding reasonable yellow *** overall white light emission properties are enhanced,achieving CIE coordinates(0.36,0.39)and color temperature(4643 k)similar to *** intermolecular exciplex emission in OLEDs simplifes the device architecture via its dual functionality as a host and as an emitter.

关键词： Organic light-emitting diodes Dual functional exciplex Spacers Device design strategy Blue exciplex Yellow OLEDs white light emission

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心绞痛

中华医学杂志 1933年第1期19卷 79-80页

作者： Arch. int. Med. May, 1932

Lews氏谓此等绞痛无非因心肌行作用时,血之供给不足所致。此情况之原因有二:(一)心之工作如常,但血之供给较少。(二)血之供给如常,而心之工作加增。氏亦用下述之比较试验以表明此理。用血压计之布带缚其上臂,以节制前臂之血循环。若屡...

Lews氏谓此等绞痛无非因心肌行作用时,血之供给不足所致。此情况之原因有二:(一)心之工作如常,但血之供给较少。(二)血之供给如常,而心之工作加增。氏亦用下述之比较试验以表明此理。用血压计之布带缚其上臂,以节制前臂之血循环。若屡以屈指肌着力握物,该肌收缩三十或四十

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Effectuate Application of Optimum Methods in Grinding Process

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厦门大学学报（自然科学版） 2002年第S1期41卷 129-130页

作者： Zhu Z H Mo k w School of Mechanical and Automobile Engineering Hefei University of TechnologySchool of Mechanical and Automobile Engineering Hefei University of Technology Hefei 230009 ChinaHefei 230009 China

Random error of grinding process is central factor th at give an effect on grinding quality all through. Optimum methods are usually a pplied on grinding process for higher productivity and preferable grinding quali ty. But the grinding quality can’t be reliably controlled now and then while opt imal solution of grinding processing parameters have been applied in production, because of two involved aspects which are availability of established empirical formulas and reliability of setting up optimum mathematical model. That is to s ay, there is particular application of optimum methods in grinding process. This paper discussed that how to confirm conditions of grinding test which be po int to grinding peculiarity when test design and regression analysis are used to setting up some empirical formulas. In order to reduce effect of random errors on precision of the empirical formulas and enable them to be applied widely, a m ethod that a lot of random error can be sufficiently contained in grinding test was suggested. And then, A means to ameliorate restriction formulas of grinding quality is expounded based on marked level of the empirical formulas and improve d reliability of optimum mathematical model is given, which offer an effectual w ay for solving grinding quality out of control as a result of random error and w orkable optimal solution of grinding processing parameters can be applied in the production really. Finally, an example is presented.

关键词： Effectuate Application of Optimum Methods in Grinding Process

基线时称无成功性交的男性勃起功能障碍患者对他达拉非治疗反应的研究

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中华男科学杂志 2009年第3期15卷 285-286页

作者： int J Impot Res 俞建军不详上海交通大学附属第六人民医院泌尿科 200233

为了在治疗前报告所有性交尝试均失败的勃起功能障碍(ED)的患者中,对他达拉非治疗反应进行事后分析,最近有研究者进行了一项多中心性、开放式临床试验。共有1911例受试者参予本研究,先进入为期4周的无治疗导入期,然后按需服用20mg他达拉... 详细信息

为了在治疗前报告所有性交尝试均失败的勃起功能障碍(ED)的患者中,对他达拉非治疗反应进行事后分析,最近有研究者进行了一项多中心性、开放式临床试验。共有1911例受试者参予本研究,先进入为期4周的无治疗导入期,然后按需服用20mg他达拉非(至多每日1次),共12周。在本研究中,疗效指标包括“性活动日志”(SEP)以及“勃起功能国际指数-勃起功能域”(IIEF-EF)。在为期4周的导入期内,约有一半(n=952例,49.9%)患者报告称性交尝试均未成功。在这些患者中,771例患者(81.0%)报告称在治疗期间性交尝试至少成功了一次。而且,在对治疗有反应的患者中,无论基线时是否能成功性交,研究终点时的平均IIEF-EF评分均是相似的。因此,应该鼓励不能成功完成性交的患者尝试口服5型磷酸二酯酶抑制剂治疗ED。医生点评:Shabsigh等对治疗前所有性交尝试均失败的勃起功能障碍(ED)患者口服他达拉非后进行事后分析,发现不能成功完成性交的患者口服5型磷酸二脂酶抑制剂有一定疗效。大量的研究已证实了他达拉非在各类ED患者中的疗效。其具有的显著特点有:起效迅速(30min以内);维持效果久,服用他达拉非后可以在长达36h内自...

关键词：男性勃起功能障碍治疗反应他达拉非时称基线多中心性临床试验疗效指标

Antiviral,immunomodulatory,and anticoagulant effects of quercetin and its derivatives:Potential role in prevention and management of COVID-19

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Journal of Pharmaceutical Analysis 2022年第1期12卷 29-34页

作者： Souparnika H.Manjunath Rajesh k.Thimmulappa Department of Biochemistry Jagadguru Sri Shivarathreeshwara Medical CollegeJagadguru Sri Shivarathreeshwara Academy of Higher Education&Research(JSSAHER)Mysore570015India

The coronavirus disease 2019(COVID-19)pandemic caused by severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)infection has caused a devastating health crisis *** this review,we have discussed that prophylactic phytochemical quercetin supplementation in the form of foods or nutraceuticals may help manage the COVID-19 *** following evidence supports our ***,nuclear factor erythroid-derived 2-like 2(NRF2)agonists abrogate replication of SARS-CoV-2 in lung cells,and quercetin is a potent NRF2 ***,quercetin exerts antiviral activity against several zoonotic coronaviruses,including SARS-CoV-2,mainly by inhibiting the entry of virions into host ***,inflammatory pathways activated by nuclear factor kappa B,inflammasome,and interleukin-6 signals elicit cytokine release syndrome that promotes acute respiratory distress syndrome in patients with COVID-19,and quercetin inhibits these pro-inflammatory ***,patients with COVID-19 develop thrombosis,and quercetin mitigates coagulation abnormalities by inhibiting plasma protein disulfide *** review provides a strong rationale for testing quercetin for the management of COVID-19.

关键词： COVID-19 Quercetin Immunomodulation Cytokine response syndrome NRF2 Antiviral

THE DYNAMIC PROPERTIES FOR THE PROTEIN MOLECULAR SYSTEM

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Acta Mathematica Scientia 1993年第4期13卷 437-448页

作者：庞小峰 int. Cent. for Mat. Phys. Academia Sinica Shenyang 110015 China Dept. of Phys. Southwest Inst. of Nationalities Chingdu 610041 China

In this paper, a new theory for the dynamic properties of protein molecular system have been proposed by means of the analysis of the characteristics of the collective excitations generated under the localized fluctuation and the deformation of structure of the protein. Some new results obtained from this study show that the Davydov theory is an approximate and disadvantegeous theory.

关键词： THE DYNAMIC PROPERTIES FOR THE PROTEIN MOLECULAR SYSTEM

Enhanced Bamboo Reinforced Aluminum Laminates

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Journal of Materials Science & Technology 1994年第5期10卷 355-358页

作者： Shihong LI Shaoyun FU and Benlian ZHOU (int. Centre for Mater. Phys., Institute of Metal Research, Chinese Academy of Science, Shenyang, 110015, China)Qiyun ZENG and Xianrong BAO (Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, 11 Inst of Metal Research Shenyang China

A new technique has been developed for flattening circular natural bamboo culm to plate form for remarkably enhancing its mechanical properties, The enhanced bamboo, cheaper than Al, is then used to reinforce an aluminum alloy for civilian applications. The properties of the composite are greatly enhanced compared to those of the Al alloy. The Al protects bamboo from bioerosion and improves hygroscopicity

关键词： Laminated composites