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Waveguides Written and Stored by Photovoltaic Dark Spatial Solitons in LiNbO_(3):Fe Crystals

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Chinese Physics Letters 1996年第10期13卷 737-740页

作者： liu si-min ZHANG Guequan SUN Qian XU Jing-jun ZHANG Guang-ying TONG Yi-cheng Department of Physics Nankai UniversityTianjin 300071 Department of Physics University of South FloridaTampaFlorida 33620USA

To our knowledge, we have demonstrated for the first time that (2+1)-dimension photorefractive waveguides can be written and stored by light using the (2+1)-dimension photovoltaic dark spatial solitons in LiNbO3:Fe cr... 详细信息

关键词： Crystal dimension Spatial

Highly elastic and degradable vitrimeric elastomers using polycondensation

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Chinese Chemical Letters 2024年第3期35卷 434-438页

作者： Yue liu Yongshuang Huang Chao Li Guifu si min Chen Institutes of Physical Science and Information Technology Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of EducationAnhui UniversityHefei 230601China CAS Key Laboratory of Soft Matter Chemistry Department of Polymer Science and EngineeringUniversity of Science and Technology of ChinaHefei 230026China

Introducing covalently crosslinked network to polymer matrix can merge the advantages in reprocessing and durability of *** this contribution,a series of high-performance vitrimeric elastomers were achieved via *** topological structures of polymers were tuned by varying the feeding ratios of bisacetoacetate,hex–substituted bisacetoacetate,bisamine and tris(2-aminoethyl)*** these structural manipulations,the vitrimeric elastomers presented great elastic recovery properties(strain recovery value up to 80%)benefiting from the introduction of long chain ***,the elastomers exhibited excellent reprocessing property,water vapor/oxygen barrier and adhesive ***,the elastomers could be degraded into monomer under acid conditions which enabled the elastomer synthesis again in closed loop recycling *** ease of the polycondensation in this work to prepare highly elastic and recyclable vitrimeric elastomers demonstrated exciting opportunities for the synthesis of sustainable polymers.

关键词： Polycondensation Vitrimeric elastomers Highly elastic Degradable polymers

Valence and Electronic Shell Configuration Characters of Damage-Resistant Dopants in LiNbO_(3) Crystals

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Chinese Physics Letters 1998年第9期15卷 686-688页

作者： ZHANG Guo-quan ZHANG Guang-yin liu si-min XU Jing-jun SUN Qian liu Jian-jun Photonics Center College of Physics ScienceNankai UniversityTianjin 300071

We analyze the valence and electronic shell configuration characters of all damage-resistant dopants found in LiNbO_(3) crystals up to *** show that all damage-resistant dopants have only one valence *** also show that the electronic shell configurations of these damage-resistant ions are filled fully,as are the cases of the inert *** this point of view,we conclude that the anti-site NbLi should be involved in the charge transport process,while the Li vacancy VLi is not involved in the charge transport *** also can give us some insights about how to select a damage-resistant dopant for LiNbO_(3) crystal.

关键词： process. valence Configuration

Synthesis of Cucurbit [ n ] uril-based Rotaxanes

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有机化学 2003年第Z1期23卷 261-262页

作者： liu si-min WU Xiao-Jun YAO Jun-Hua WU Cheng-Tai Department of Chemistry Wuhan University Wuhan 430072 Department of Chemistry Wuhan University Wuhan 430072 Instrumentation Analysis and Research Center Sun Yat-Sen University Guangzhou 510275 Department of Chemistry Wuhan University Wuhan 430072

　　Non-covalent attractive forces are commonly employed in biological systems to drive the assembly of highly orga nized supramolecular entities from relatively simple subunits.……

关键词： biological systems

Environmental heavy metals and cardiovascular diseases:Status and future direction

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Chronic Diseases and Translational Medicine 2020年第4期6卷 251-259页

作者： Ai-min Yang Kenneth Lo Tong-Zhang Zheng Jing-Li Yang Ya-Na Bai Ying-Qing Feng Ning Cheng si-min liu Hong Kong Institute of Diabetes and Obesity The Chinese University of Hong KongHong Kong SARChina Centre for Global Cardiometabolic Health Department of EpidemiologySurgeryand MedicineBrown UniversityProvidenceRI 02903USA Department of Epidemiology School of Public HealthBrown UniversityProvidenceRI 02903USA Department of Cardiology and Endocrinology Guangdong Provincial People's HospitalGuandong Academy of Medical SciencesGuangzhouGuangdong 510080China Department of Epidemiology School of Public HealthLanzhou UniversityLanzhouGansu 730000China

Cardiovascular disease(CVD)and environmental degradation are leading global health problems of our *** studies have linked exposure to heavy metals to the risks of CVD and diabetes,particularly in populations from low-and middle-income countries,where concomitant rapid development *** this review,we 1)assessed the totality,quantity,and consistency of the available epidemiological studies,linking heavy metal exposures to the risk of CVD(including stroke and coronary heart disease);2)discussed the potential biological mechanisms underlying some tantalizing observations in humans;and 3)identified gaps in our knowledge base that must be investigated in future *** accumulating body of evidence from both experimental and obser-vational studies implicates exposure to heavy metals,in a dose-response manner,in the increased risk of *** limitations of most existing studies include insufficient statistical power,lack of comprehensive assessment of exposure,and cross-sectional *** the widespread exposure to heavy metals,an urgent need has emerged to investigate these putative associations of environmental exposures,either independently or jointly,with incident CVD outcomes prospectively in well-characterized cohorts of diverse populations,and to determine potential strategies to prevent and control the impacts of heavy metal exposure on the cardiometabolic health outcomes of individuals and populations.

关键词： Heavy metal Cardiovascular disease Hypertension Stroke Coronary heart disease

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外阴棘层松解型鳞状细胞癌一例

国际妇产科学杂志 2024年第3期51卷 267-270页

作者：刘思敏魏佳万怡李钰滋杨永秀兰州大学第一临床医学院 730000 兰州大学第一医院妇产科甘肃省妇科肿瘤重点实验室

棘层松解型鳞状细胞癌(acantholytic squamous cell carcinoma,ASCC)是鳞状细胞癌的一种少见的组织学特征变体,外阴ASCC是一个罕见的非典型部位的组织变异,常呈棘层溶解,具有独特的形态学特点,其具体发病机制及病因未明。由于发病率极低... 详细信息

棘层松解型鳞状细胞癌(acantholytic squamous cell carcinoma,ASCC)是鳞状细胞癌的一种少见的组织学特征变体,外阴ASCC是一个罕见的非典型部位的组织变异,常呈棘层溶解,具有独特的形态学特点,其具体发病机制及病因未明。由于发病率极低,妇科医生普遍对其认识不足,易造成漏诊和误诊。现报告1例79岁原发性外阴ASCC的病例资料,患者因自觉外阴瘙痒5年就诊,妇科检查发现左侧外阴8 cm×4 cm红肿溃疡伴部分白色变,病理活检示符合ASCC,经25次根治性放疗后,建议密切随诊,现放疗结束后3个月余,未见肿瘤复发和转移。国内外关于外阴ASCC的研究报道较少,通过报道该例老年女性外阴ASCC,并分析其临床特征、发病机制、发病因素、鉴别诊断、治疗及预后,以期为ASCC的临床诊疗提供参考。

关键词：外阴肿瘤棘层松解型鳞状细胞癌诊断,鉴别治疗预后病例报告

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高坝枢纽场景的数字孪生仿真系统设计与实现

计算机技术与发展 2024年第8期34卷 175-180页

作者：蒋昆宏韩东轩刘思敏柴薪垚李骧李理西南科技大学四川绵阳621010 四川省工业自主可控人工智能工程技术研究中心四川绵阳621010

针对当前泄洪消能建筑物运行期水流特性多变、地理环境复杂、水利信息散乱、信息处理效率低下等挑战,以高坝枢纽水垫塘为典型场景,提出一种面向该场景的数字孪生仿真系统设计与实现方法。该方法以搭载虚拟摄像头的虚拟无人机巡检作为辅... 详细信息

针对当前泄洪消能建筑物运行期水流特性多变、地理环境复杂、水利信息散乱、信息处理效率低下等挑战,以高坝枢纽水垫塘为典型场景,提出一种面向该场景的数字孪生仿真系统设计与实现方法。该方法以搭载虚拟摄像头的虚拟无人机巡检作为辅助手段,从建模-数据-交互-仿真模拟-设备孪生体多个维度建立虚拟空间的对应映射关系和交互环境,为高坝枢纽的安全运行提供决策依据。阐述了数字孪生技术在高坝枢纽建筑中的运用,为减少数字孪生模型响应时间,提出在数字孪生仿真系统下使用二次度量误差边折叠算法(QEM)解决网格模型复杂问题,并通过实验结果验证其建筑原型设计的完备性。为下一步的图像处理等智能化应用提供决策参考。

关键词：高坝枢纽数字孪生场景建模模型简化数据交互虚拟仿真

Metal Exposure and Risk of Diabetes and Prediabetes among Chinese Occupational Workers

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Biomedical and Environmental Sciences 2015年第12期28卷 875-883页

作者： YANG Ai min CHENG Ning PU Hong Quan liu si min LI Juan Sheng BASsiG Bryan A. DAI min LI Hai Yan HU Xiao Bin REN Xiao Wei ZHENG Tong Zhang BAI Ya Na Institute of Epidemiology and Statistics School of Public HealthLanzhou University Department of Epidemiology School of Public HealthBrown University Center of Medical Laboratory Lanzhou University Workers’ Hospital of Jinchuan Group Co. Ltd. Department of Environmental Health Sciences School of Public HealthYale University Cancer Hospital Chinese Academy of Medical Sciences

Objective To study the association between metal exposure and risk of diabetes and prediabetes among Chinese workers exposed to *** We used data obtained from the baseline survey of the Jinchang Cohort Study of workers in Jinchang Industry,the largest nickel production company in China.A total of 42,122 workers ≥20 years of age were included in the study.A standardized,structured questionnaire was used to collect epidemiological *** examinations and laboratory tests were conducted to evaluate the health status of the participants and to measure various biomarkers including blood sugar,lipids,and urinary metal *** regression was used to study the association between occupational groups categorized according to the measured metal levels(office workers,low-level;mining/production workers,mid-level;and smelting/refining workers,high-level)and risk of diabetes and *** The overall prevalence of diabetes and prediabetes was 7.5% and 16.8%,*** adjusted odds ratios for diabetes among mining/production workers and smelting/refining workers compared to office workers were 1.5(95% CI:1.3,1.7)and 3.8(95% CI:3.4,4.3),*** association was observed between these occupational groups and prediabetes in this *** Occupations associated with higher levels of metal exposure were associated with an increased risk of diabetes in this *** studies are needed to confirm this observed association.

关键词： Metals Occupational exposure Diabetes Prediabetes Risk factors

Cordyceps as potential therapeutic agents for atherosclerosis

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Journal of Integrative Medicine 2024年第2期22卷 102-114页

作者： Yi Zhang si-jing liu School of Marxism Chengdu University of Traditional Chinese MedicineChengdu 61137Sichuan ProvinceChina College of Medical Technology Chengdu University of Traditional Chinese MedicineChengdu 611137Sichuan ProvinceChina Chongqing Key Laboratory of sichuan-Chongqing Co-construction for Diagnosis and Treatment of Infectious Diseases with Integrated Chinese and Western Medicine Chengdu University of Traditional Chinese MedicineChengdu 611137Sichuan ProvinceChina

Atherosclerosis is a leading cause of mortality and morbidity *** the challenges in managing atherosclerosis,researchers continue to investigate new treatments and complementary *** is a traditional Chinese medicine that has recently gained attention as a potential therapeutic agent for *** studies have demonstrated the effectiveness of cordyceps in treating atherosclerosis through various pharmacological actions,including anti-inflammatory and antioxidant activities,lowering cholesterol,inhibiting platelet aggregation,and modulating apoptosis or autophagy in vascular endothelial ***,the current misuse of the terms cordyceps and Ophiocordyceps sinensis has caused confusion among researchers,and complicated the current academic research on *** review focuses on the chemical composition,pharmacological actions,and underlying mechanisms contributing to the anti-atherosclerotic effects of cordyceps and the mycelium of Ophiocordyceps *** review provides a resource for the research on the development of new drugs for atherosclerosis from cordyceps.

关键词： Atherosclerosis Cordyceps Ophiocordyceps sinensis