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Organic Chemistry Frontiers 2022年第4期9卷 1115-1120页

作者： Zhanhu Ma yongan Liu Xiaoyu Ma Xiaojun Hu Yong Guo Qing-Yun Chen Chao Liu School of Chemical and Environmental Engineering Shanghai Institute of Technology100 Haiquan RoadShanghai 201418China Key Laboratory of Organofluorine Chemistry Shanghai Institute of Organic ChemistryUniversity of Chinese Academy of SciencesChinese Academy of Sciences345 Lingling RoadShanghai 200032China

Based on a radical sulfur dioxide insertion and fluorination strategy,we have developed an efficient method for aliphatic sulfonyl fluoride synthesis using abundant carboxylic acids,a reductant,a sulfur dioxide surrogate and the electrophilic fluorination reagent N-fluorobenzenesulfonimide(NFSI)under reduction *** protocol provides a convenient synthetic pathway for various aliphatic sulfonyl fluorides and tolerates a wide range of functional groups.

关键词： conditions fluoride synthesis

钠基吸收剂在垃圾焚烧烟气中脱酸失活热力学研究

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盐科学与化工 2024年第3期53卷 13-18页

作者：龚建涛孙慧宗永兰吴泳霖蒋明云南农业大学资源与环境学院云南昆明650201

为探究钠基吸收剂(NaHCO_(3)和Na2CO_(3))在垃圾焚烧烟气中脱酸失活热力学机理。采用HSC Chemistry 6.0热力学数据库对钠基吸收剂在垃圾焚烧烟气中失活热力学进行了模拟计算,分析了在100~200°C的温度范围内可能存在的化学反应,并比较... 详细信息

为探究钠基吸收剂(NaHCO_(3)和Na2CO_(3))在垃圾焚烧烟气中脱酸失活热力学机理。采用HSC Chemistry 6.0热力学数据库对钠基吸收剂在垃圾焚烧烟气中失活热力学进行了模拟计算,分析了在100~200°C的温度范围内可能存在的化学反应,并比较了各气体组分的热力学主导反应。结果表明,酸性气体HCl、SO_(2)和HF均能使钠基吸收剂失活,其中,SO_(2)对Na2CO_(3)的失活影响最大。体系中共存O_(2)或H2O时,不会对NaHCO_(3)的脱酸产生影响,但O_(2)会参与Na2CO_(3)的脱硫和脱氮过程,H2O会参与Na2CO_(3)的脱碳过程。

关键词：钠基吸收剂脱酸热力学垃圾焚烧烟气

Effect of Knowledge about Workers' Psychological Contract Imbalance on Organizational Performance

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Journal of Donghua University(English Edition) 2018年第5期35卷 406-410页

作者： WANG yongan SUN Minggui College of Humanities Donghua University Glorious Sun School of Business and Management Donghua University

Knowledge-based employees are the inexhaustible motive force for the sustainable development of modern enterprises. Being consistent with the psychological expectation of knowledge-based employees is conducive to stimulating the intrinsic motivation of knowledge-based employees and promoting the innovation performance of enterprises. Based on 175 valid questionnaires,the analysis shows that the knowledge about employees' psychological contract can be divided into two-dimension, transactional or relational dimension. Both of them are independent to each *** correlation analysis shows that the transactional psychological contract and relational psychological contract have positive correlation with team performance and organization *** the same time, the team performance and organization performance have positive correlation. Regression analysis shows that compared with relational psychological contract,transactional psychological contract can promote team performance and organizational performance more effectively. Both two psychological contracts can mediate the organizational performance by virtue of team performance.

关键词： knowledge employee psychological contract psychological imbalance organizational performance

A Study on Service-Oriented Smart Medical Systems Combined with Key Algorithms in the IoT Environment

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China Communications 2019年第9期16卷 235-249页

作者： Shan Lu Anzhi Wang Shenqi Jing Tao Shan Xin Zhang yongan Guo Yun Liu Department of Geriatrics the First Affiliated Hospital of Nanjing Medical UniversityNanjing 210029China Department of Health Education the First Affiliated Hospital of Nanjing Medical UniversityNanjing 210029China Engineering Research Center of Health Service System Based on Ubiquitous Wireless Networks Ministry of EducationNanjing University of Posts and TelecommunicationsNanjing 210003China

A smart medical service system architecture is proposed in this paper to increase medical resource utilization and improve the efficiency of the medical diagnosis process for complex business scenarios in the Medical Internet of Things(MIoT)*** resource representation model theory,multi-terminal aggregation algorithm,and the resource discovery algorithm based on latent factor model are also studied.A smart medical service system within the IoT environment is then developed,based on the open source *** results using real-world datasets illustrate that the proposed smart medical service system architecture can promote the intelligent and efficient management of medical resources to an extent,and assists in the develop towards digitization,intelligence,and precision in the field of medicine.

关键词： Internet of Things resource representationmodel resource discovery algorithm smart medical service system

肝素结合蛋白、总胆红素和白细胞计数联合预测严重创伤合并脓毒症的效能评价

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中国病理生理杂志 2024年第7期40卷 1292-1299页

作者：何黎伍莹季晓珍甘榜佳唐劲涛张琴琴应健智许永安广西壮族自治区南溪山医院广西桂林541002 浙江大学医学院附属第二医院急诊医学科浙江杭州310003 玉林市第一人民医院广西玉林537000 桂林医学院广西桂林541001 浙江省龙泉市人民医院急诊医学科浙江龙泉323700 桂林医学院附属医院广西肝脏损伤与修复分子医学重点实验室广西桂林541001 台州市第一人民医院浙江台州318000

目的:评价肝素结合蛋白(HBP)联合脏器功能指标对严重创伤合并脓毒症患者预警诊断和预后预测效能评价研究。方法:回顾性分析2019年1月~2020年9月期间入住浙江大学医学院附属第二医院急诊医学科的多发伤并完成HBP检测患者184例,根据SEPSIS... 详细信息

目的:评价肝素结合蛋白(HBP)联合脏器功能指标对严重创伤合并脓毒症患者预警诊断和预后预测效能评价研究。方法:回顾性分析2019年1月~2020年9月期间入住浙江大学医学院附属第二医院急诊医学科的多发伤并完成HBP检测患者184例,根据SEPSIS 3.0诊断标准将患者分为脓毒症组(n=89)和非脓毒症组(n=95),追踪患者临床结局分为死亡组(n=43)和非死亡组(n=141)。连续测定患者HBP水平,比较两组HBP峰值差异,评估其诊断脓毒症的效力,以HBP峰值的中位数为界值进一步分析其与临床预后相关性,评估HBP单独及联合总胆红素(TBil)及白细胞(WBC)评估预后的效力。结果:(1)脓毒症组(n=89)与非脓毒症组(n=95)HBP的峰值(71.7±68.6 vs 52.5±56.1)无显著差异(P=0.051)。(2)184例患者中HBP峰值与WBC计数呈正相关(r=0.244,P0.05)。结论:HBP、TBil及WBC三者联合用于评估多发伤患者发生脓毒症风险的预测效力较高,对于合并脓毒症的外伤患者死亡风险预测具有较高的临床指导价值。

关键词：肝素结合蛋白脓毒症严重创伤总胆红素白细胞

Macro-micro dynamic behaviors and fracture modes of roll bonded 7A52/7A01/7B52 aluminum laminates in high velocity deformation

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Progress in Natural Science:Materials International 2018年第4期28卷 510-519页

作者： Guochuan Zhu Shuhui Huang Xiwu Li Zhihui Li Youzhi Tong yongan Zhang Baiqing Xiong State Key Laboratory of Nonferrous Metals and Processes General Research Institute for Nonferrous Metals Northeast light alloy Limited Liability Company Heilongjiang

Damage tolerance improvement in the lamination of aluminum alloy plates and composites has been reported in many studies. In the present study the macro-micro dynamic deformation behavior and related mechanisms of 7A52/7A01/7B52 laminated plates processed by hot roll bonding of 7A52, 7A01 and 7B52 plate at high strain rates and quasi-static compression has been investigated. The microstructure of the laminated plates was examined with backscatter diffraction(EBSD) techniques, scanning and transmission electron microscopies. The results showed that with increased strain rate, obvious strain rate hardening was observed in the single layer specimens. The peak flow stress of the multilayer samples was slightly higher than that of the 7A52 monolayer samples and much lower than that of the 7B52 monolayer samples at the same strain rate. Beyond the peak stress state, the strain hardening was replaced by thermal softening in the 7A52 layer, leading to low resistance of deformation and high tendency to facilitate deformation-induced adiabatic shear bands(ASBs) that consist of dynamic recrystallized grains. ASBs in laminated samples were deflected and bifurcated at the interface of 7A52 layer. In addition, bifurcated ASBs converged at the interface between the 7A52 and 7A01 layers. The high deformation resistance observed in the laminate under dynamic loading was a consequence of the high capacity for strain hardening in the 7A01 layer. This hardening effectively overcame the influences of thermal softening and dynamic recovery during dynamic loading. This study provides an understanding of the laminate’s microstructure evolution during dynamic deformation and its relevance to the fracture modes of a multilayer structure under dynamic loading.

关键词： Laminated plate Fracture mode Microstructure Aluminum alloy Mechanical properties

Effect of Zn addition on microstructure and mechanical properties of an Al–Mg–Si alloy

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Progress in Natural Science:Materials International 2014年第2期24卷 97-100页

作者： Lizhen Yan yongan Zhang Xiwu Li Zhihui Li Feng Wang Hongwei Liu Baiqing Xiong State Key Laboratory of Nonferrous Metals and Processes General Research Institute for Nonferrous Metals

In the present work, an Al–0.66Mg–0.85Si–0.2Cu alloy with Zn addition was investigated by electron back scattering diffraction(EBSD), high resolution electron microscopy(HREM), tensile and Erichsen tests. The mechanical properties of the alloy after pre-aging met the standards of sheet forming. After paint baking, the yield strength of the alloy was improved apparently. GP(Ⅱ) zones and η'phases were formed during aging process due to Zn addition. With the precipitation of GP zones, β″ phases, GP(Ⅱ) zones and η'phases, the alloys displayed excellent mechanical properties.

关键词： Al–Mg–Si alloy Paint baking response Skin panels

Microbial and molecular fossils from the Permian Zoophycos in South China

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Science China Earth Sciences 2007年第8期50卷 1121-1127页

作者： GONG YiMing XU Ran XIE ShuCheng HUANG XianYu HU Bin QI yongan ZHANG GuoCheng Key Laboratory of Biogeology and Environmental Geology of Ministry of Education State Key Laboratory of Geological Processes and Mineral ResourcesChina University of GeosciencesWuhan 430074China Institute of Resources and Environment Key Laboratory of Biogenic Traces&Sedimentary Minerals of Henan ProvinceHenan Polytechnic UniversityJiaozuo 454003China

The trace fossil Zoophycos was enriched in the lower part of the Guadalupian Maokou Formation of Permian in Laibin, Guangxi of South China, and characterized by observable lamellae within its spreiten. Associated with these lamellae are the prolific coccus- and spirillum-shaped microbe fossils. These microbes morphologically identified are 0.4―3.0 μm in diameter or length. Molecular fossils, including normal alkanes (dominated by C18, without an odd-over-even predominance), acyclic isoprenoids (such as pristane (Pr) and phytane (Ph)), extended tricyclic terpanes, pentacyclic triterpanes, steranes, al-kylcyclohexanes, dibenzothiophenes, benzonaphthothiophenes, benzobisbenzothiophenes, were in-strumentally identified in the wackestone characterized by the occurrence of abundant Zoophycos (composite ichnofabric indices are 4) and crowded microbial fossils. The value of the Pr/Ph ratio is less than 1, indicative of a dysoxic condition. The identification of abundant sulfur compounds (the thio-phene series) related to the contribution of reductive sulfur favors the occurrence of sulphate-reducing bacteria. The association of abundant microbial colonies with microbial molecular fossils within the spreiten suggests that trace fossils Zoophycos would be a multifunctional garden carefully constructed by the Zoophycos-producer, where different microbial colonies were orderly and carefully planted and cultured in different minor lamellae within spreiten. Hence, it is proposed that the Zoophycos-producer symbiosed with microbial colonies on the mutual basis of food supply and the redox conditions.

关键词： trace fossils Zoophycos microbes molecular fossils Permian South China

Effect of one-step aging on microstructure and properties of a novel Al-Zn-Mg-Cu-Zr alloy

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Science China(Technological Sciences) 2009年第1期52卷 67-71页

作者： LI XiWu XIONG BaiQing ZHANG yongan HUA Cheng WANG Feng ZHU BaoHong LIU HongWei State Key Laboratory for Fabrication and Processing of Non-ferrous Metals General Research Institute for Non-ferrous MetalsBeijing 100088China

The effect of one-step aging temper on the mechanical properties, electrical conductivity and the microstructure of a novel Al-7.5Zn-1.6Mg-1.4Cu-0.12Zr alloy has been investigated. The results indicated that with elevating the aging temperature from 100°C to 160°C, the aging response rate was greatly accelerated, and the UTS at peak aging condition decreased, while the corresponding TYS increased. However, the electrical conductivity of the alloy became higher. After aging for 24 h at 120°C, the peak UTS and TYS values were achieved as 591 MPa and 541 MPa, respectively; but the alloy achieved a lower conductivity, 20.4 MS/m. When T6 temper was performed at 140°C for 14 h, the UTS decreased only by 1% of the former, whereas the TYS and the electrical conductivity increased obviously, which were up to 559 MPa and 22.6 MS/m, respectively. The major strengthening precipitates of the peak-aged alloy were GP zones and η′ phase. The precipitates in both the matrix and the grain boundary became coarser with rising aging temperature. There were obvious PFZs along the grain boundary both in T6 conditions aged at 140°C and 160°C.

关键词： Al-Zn-Mg-Cu alloy one-step aging properties microstructure

新托品对豚鼠形觉剥夺性近视的抑制作用及机制

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中国药理学与毒理学杂志 2024年第5期38卷 360-368页

作者：杨心怡黄洪鹏郭晓萱鲍正好张鹏骆媛孙岚王永安沈阳药科大学无涯创新学院辽宁沈阳110016 军事科学院军事医学研究院国家安全特需药品全国重点实验室北京100850 辽宁大学药学院辽宁沈阳110036

目的探究毒蕈碱受体拮抗剂新托品对豚鼠形觉剥夺性近视(FDM)的抑制作用及机制。方法随机将三色豚鼠分为正常对照组、FDM模型组、FDM+生理盐水组、FDM+阿托品组和FDM+新托品组,每组8只。除正常对照组外,其余各组均对豚鼠右眼连续遮盖1... 详细信息

目的探究毒蕈碱受体拮抗剂新托品对豚鼠形觉剥夺性近视(FDM)的抑制作用及机制。方法随机将三色豚鼠分为正常对照组、FDM模型组、FDM+生理盐水组、FDM+阿托品组和FDM+新托品组,每组8只。除正常对照组外,其余各组均对豚鼠右眼连续遮盖14 d建立豚鼠FDM模型,给药组每2 d分别于玻璃体腔内注射10μL生理盐水、1%阿托品或1%新托品1次。测量干预前和干预14 d后双眼屈光度和眼轴长度,而后取豚鼠右眼眼球,采用HE染色评价巩膜组织病理结构,天狼星红染色检测巩膜胶原蛋白含量,RT-qPCR法检测豚鼠巩膜转化生长因子β_(1)(TGF-β_(1))、基质金属蛋白酶2(MMP-2)和金属蛋白酶组织抑制因子2(TIMP-2)mRNA表达水平,Western印迹法检测豚鼠巩膜Ⅰ型胶原蛋白(Col-Ⅰ)和TGF-β_(1)蛋白表达水平,免疫组化法检测豚鼠巩膜MMP-2,TIMP-2和Ki-67蛋白表达水平。结果与正常对照组比较,FDM模型组豚鼠眼球屈光度显著降低(P<0.01),眼轴显著伸长(P<0.01),巩膜纤维束分布散乱,胶原细胞稀疏,巩膜厚度减少(P<0.01),胶原蛋白含量显著降低(P<0.01),巩膜组织TIMP-2和TGF-β_(1)mRNA和蛋白表达均显著降低(P<0.05,P<0.01),MMP-2 mRNA和蛋白表达显著升高(P<0.01),Col-Ⅰ蛋白表达水平降低(P<0.05),Ki-67蛋白表达水平升高(P<0.01)。与FDM模型组相比,FDM+生理盐水组各指标均无显著变化;FDM+新托品组和FDM+阿托品组豚鼠右眼屈光度均显著升高(P<0.05),眼轴长度显著缩短(P<0.05),胶原纤维排列较紧密,纤维束分布较有序,胶原细胞分布较均匀,巩膜厚度明显增加(P<0.01),胶原蛋白含量显著升高(P<0.05,P<0.01),巩膜组织TIMP-2和TGF-β_(1)mRNA和蛋白表达均显著升高(P<0.05,P<0.01),MMP-2 mRNA和蛋白表达显著降低(P<0.05,P<0.01),Col-Ⅰ蛋白表达水平升高(P<0.05,P<0.01),Ki-67蛋白表达水平降低(P<0.05,P<0.01)。结论毒蕈碱受体拮抗剂新托品可通过逆转FDM模型豚鼠巩膜组织TGF-β_(1)下调和MMP-2上调,抑制巩膜细胞外基质重塑,从而抑制FDM模型豚鼠近视的发生发展。

关键词：新托品近视形觉剥夺性近视