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A new cycloartane nortriterpenoid from Quercus variabilis Blume

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Chinese Chemical Letters 2009年第7期20卷 817-819页

作者： Yan Xin Ling Yun Jia Jiu Zhi Yuan qi shi sun School of Traditional Chinese Materia Medica Shenyang Pharmaceutical University Shenyang 110016 China

The leaves and stems of Quercus variabilis Blume afforded a new cycloartane nortriterpenoid, 3α-acetyloxy-4α, 14α-dimethyl- 9β, 19-eycloergost-24-oic acid （1）, along with five known compounds （2-6）. The structure of 1 was elucidated by 1D and 2D NMR and mass spectroscopy. 2009 qi shi sun. Published by Elsevier B.V. on behalf of Chinese Chemical Society. All rights reserved.

关键词： Quercus variabilis Blume Cycloartane nortriterpenoid

Two New Compounds from Lindera chunii Merr.

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Chinese Chemical Letters 2006年第10期17卷 1325-1327页

作者： Mian ZHANG Chao Feng ZHANG qi shi sun Zheng Tao WANG College of Traditional Chinese Pharmacy China Pharmaceutical University Nanjing 210038 College of Traditional Chinese Pharmacy Shenyang Pharmaceutical University Shenyang 110016

Two new compounds, linderafurane A and linchuniinone, were isolated from the root of Lindera chunii Merr.. The structures were elucidated by spectroscopic methods, and their activities against HIV-1 integrase were eva... 详细信息

关键词： Lauraceae Lindera chunii linderafurane A linchuniinone HIV- 1 integrase.

A novel cytotoxic neophysalin from Physalis alkekengi ***

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Chinese Chemical Letters 2009年第11期20卷 1327-1330页

作者： Chu Hang Zhang Zheng Tao Wang Yi Ping Yang qi shi sun School of Traditional Chinese Materia Medica Shenyang Pharmaceutical University Shenyang 110016 China Key Laboratory of Standardization of Chinese Medicines of Ministry of Education Institute of Chinese Materia Medica Shanghai University of Traditional Chinese Medicine Shanghai 201203 China

A new neophysalin, named 5α-hydroxy-25,27-dihydro-4,7-didehydro-7-deoxyneophysalin A（1）, along with three other known neophysalins （2-4） were isolated from the calyxes of Physalis alkekengi L. *** （Mast.） Makino. The structure of 1 was determined by means of 1D and 2D NMR, UV, IR and mass spectra. Compound 1 displayed potent cytotoxicities in vitro against PC- 3 and LNCaP cell lines.

关键词： Physalis alkekengi var. francheti Neophysalin Cytotoxicity

Effect of ZnO on the performance of Ag/SiO_2 catalyst for the vapor-phase synthesis of 3-methylindole

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Journal of Natural Gas Chemistry 2009年第4期18卷 445-448页

作者： Yang Hu Wenhui Lu Dongyan Liu Jing Liu Lei shi qi sun Institute of Chemistry for Functionalized Materials Faculty of Chemistry and Chemical Engineering Liaoning Normal University Dalian 116029 Liaoning China

The vapor-phase synthesis of 3-methylindole over Ag/SiO2 doped with ZnO was investigated. The catalysts were characterized by XRD, H2- TPR, NH3-TPD and TG techniques. The results indicated that ZnO promoter greatly enhanced the initial activity of the catalyst but disfavored its stability. H2-TPR and XRD results showed that the reduction peak of Ag2O shifted to higher temperature and the intensity of silver diffraction peaks was much weaker after the addition of ZnO promoter to Ag/SiO2. This indicated that there existed the interaction between Ag2O and SiO2-ZnO which promoted the silver particles dispersing on the support and inhibited the sintering of silver during the reaction. NH3-TPD and TG results revealed that the acid amounts of the catalyst and coking increased after adding ZnO to Ag/SiO2, which resulted in the deactivation of Ag/SiO2-ZnO catalyst rapidly.

关键词： ZnO Ag/SiO2 3-methylindole initial activity selectivity stability

Survey on performance of vertical slot and nature-like fishways at Angu hydropower station, Southwest China

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Water Science and Engineering 2024年第1期17卷 83-91页

作者： Jun-jian sun Jia-yue shi qi Zhang Xiao-tao shi Jun-jun Tan PowerChina Huadong Engineering Corporation Limited Hangzhou 311122China Hubei International Science and Technology Cooperation Base of Fish Passage China Three Gorges UniversityYichang 443002China

To restore dam-blocked natural fish migratory passages,a growing number of artificial fishways have been built in water conservancy and hydropower projects in *** Angu hydropower station involved diverse important fish habitats in the lower reaches of the Daduhe River in Southwest ***,a vertical slot fishway(VSF)and a nature-like fishway(NLF)were built near the backwater area of the reservoir to connect the upstream and downstream *** and aquatic ecological surveys were conducted after the completion of the project to estimate the fish passing effect of the two *** results indicated that both fishways were in effective operation and could maintain the desired hydrodynamic conditions and be used by several local fish *** the survey,149 fish from 15 species and 111 fish from 17 species were captured by the traps in the VSF and NLF,respectively,while 1263 fish from 27 species were found in the downstream *** species captured in the VSF were not found in the NLF,and vice versa,which implied the different preferences of ***,3789 signals including 2099 upward ones and 1690 downward ones were monitored with an ultrasonic fish detector at the inlet of the *** findings revealed the characteristics of fish species observed in and near the fishways and provided valuable insights into the different fish passing capabilities of VSFandNLF.

关键词： Vertical slot fishway Nature-like fishway Aguatic ecological survey Fishwaymonitoring Statistical analysis

Early therapeutic interventions of traditional Chinese medicine in COVID-19 patients:A retrospective cohort study

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Journal of Integrative Medicine 2021年第3期19卷 226-231页

作者： Miao-yan shi shi-qi sun Wei Zhang Xing Zhang Gui-hua Xu Xuan Chen Zi-jian Su Xiu-ming Song Lu-jiong Liu Yi-bao Zhang Yi-le Zhang Meng sun qi Chen Yan Xue Hua Lü Wei-an Yuan Xiao-rong Chen Yun-fei Lu Department of Respiratory Disease Shuguang HospitalShanghai University of Traditional Chinese MedicineShanghai 201203China Center for Clinical Effect Evaluation Shuguang HospitalShanghai University of Traditional Chinese MedicineShanghai 201203China Department of Clinical Pharmacology Shuguang HospitalShanghai University of Traditional Chinese MedicineShanghai 201203China Shanghai Public Health Clinical Center Fudan UniversityShanghai 201508China

Objective:To observe the early interventions of traditional Chinese Medicine(TCM)on the conversion time of nucleic acid in patients with coronavirus disease 2019(COVID-19),and find possible underlying mechanisms of ***:A retrospective cohort study was conducted on 300 confirmed COVID-19 patients who were treated with TCM,at a designated hospital in *** patients were categorized into three groups:TCM1,TCM2 and TCM3,who respectively received TCM interventions within 7,8–14,and greater than15 days of *** indicators such as the conversion time of pharyngeal swab nucleic acid,the conversion time of fecal nucleic acid,length of hospital stay,and inflammatory markers(leukocyte count,and lymphocyte count and percentage)were analyzed to observe the impact of early TCM interventions on these ***:The median conversion times of pharyngeal swab nucleic acid in the three groups were 5.5,7 and16 d(P<0.001),with TCM1 and TCM2 being statistically different from TCM3(P<0.01).TCM1(P<0.05)and TCM3(P<0.01)were statistically different from *** median conversion times of fecal nucleic acid in the three groups were 7,9 and 17 d(P<0.001).Conversion times of fecal nucleic acid in TCM1 were statistically different from TCM3 and TCM2(P<0.01).The median lengths of hospital stay in the three groups were 13,16 and 21 d(P<0.001).TCM1 and TCM2 were statistically different from TCM3(P<0.01);TCM1 and TCM3 were statistically different from TCM2(P<0.01).Both leucocyte and lymphocyte counts increased gradually with an increase in the length of hospital stay in TCM1 group patients,with a statistically significant difference observed at each time point in the group(P<0.001).Statistically significant differences in lymphocyte count and percentage in TCM2(P<0.001),and in leucocyte count(P=0.043)and lymphocyte count(P=0.038)in TCM3 were *** comparison among the three groups showed a statistically significant difference in lymphocyte percentage o

关键词： Coronavirus disease 2019 Early interventions Traditional Chinese medicine Conversion time of viral nucleic acid Inflammatory indicators

Photo-Responsive Carbon Capture over Metalloporphyrin-C_(60) Metal-Organic Frameworks via Charge-Transfer

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Research 2024年第3期2023卷 233-241页

作者： shi-Chao qi Zhen sun Zhi-Hui Yang Yun-Jie Zhao Jia-Xin Li Xiao-qin Liu Lin-Bing sun State Key Laboratory of Materials-Oriented Chemical Engineering Jiangsu National Synergetic Innovation Center for Advanced Materials(SICAM)College of Chemical EngineeringNanjing Tech UniversityNanjing 211816China.

Great efforts have been devoted to the study of photo-responsive adsorption,but its current methodology largely depends on the well-defined photochromic units and their photo-driven molecular ***,a methodology to fabricate nondeforming photo-responsive sorbents is successfully *** C_(60)-fullerene doping in metalloporphyrin metal-organic frameworks(PCN-M,M=Fe,Co,or Ni)and intensively interacting with the metalloporphyrin sites,effective charge-transfer can be achieved over the metalloporphyrin-C_(60) architectures once excited by the light at 350 to 780 *** electron density distribution and the resultant adsorption activity are thus changed by excited states,which are also stable enough to meet the timescale of microscopic adsorption *** charge-transfer over Co(II)-porphyrin-C_(60) is proved to be more efficient than the Fe(II)-and Ni(II)-porphyrin-C_(60) sites,as well as than all the metalloporphyrin sites,so the CO_(2) adsorption capacity(CAC;at 0°C and 1 bar)over the C_(60)-doped PCN-Co can be largely improved from 2.05 mmol g^(−1) in the darkness to 2.69 mmol g−1 with light,increased by 31%,in contrast to photo-irresponsive CAC over all C_(60)-undoped PCN-M sorbents and only the photo-loss CAC over C_(60).

关键词： porphyrin adsorption excited

Investigating Load Regulation Characteristics of a Wind-PV-Coal Storage Multi-Power Generation System

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Energy Engineering 2024年第4期121卷 913-932页

作者： Zhongping Liu Enhui sun Jiahao shi Lei Zhang qi Wang Jiali Dong Sinopec Star Co. Ltd.Zhengzhou450000China Hebei Key Laboratory of Low Carbon and High Efficiency Power Generation Technology North China Electric Power UniversityBaoding071003China

There is a growing need to explore the potential of coal-fired power plants(CFPPs)to enhance the utilization rate of wind power(wind)and photovoltaic power(PV)in the green energy *** study developed a load regulation model for a multi-power generation system comprising wind,PV,and coal energy storage using realworld *** power supply process was divided into eight fundamental load regulation scenarios,elucidating the influence of each scenario on load *** the framework of the multi-power generation system with the wind(50 MW)and PV(50 MW)alongside a CFPP(330 MW),a lithium-iron phosphate energy storage system(LIPBESS)was integrated to improve the system’s load regulation *** energy storage operation strategy was formulated based on the charging and discharging priority of the LIPBESS for each basic scenario and the charging and discharging load calculation method of LIPBESS auxiliary *** optimization using the particle swarm algorithm,the optimal capacity of LIPBESS was determined to be within the 5.24-4.88 MWh *** an economic perspective,the LIPBESS operating with CFPP as the regulating power source was 49.1% lower in capacity compared to the renewable energy-based storage mode.

关键词： Wind power coal-fired power PV multi-power generation system lithium-iron phosphate energy storage system

Liquid-metal microgrid stretchable electronics based on bionic leaf veins with ultra-stretchability and high conductivity

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Rare Metals 2024年第6期43卷 2747-2757页

作者： Xi-Di sun Jun-Yang An Yi-qi sun Xin Guo Jing Wu Jiang-Bo Hua Meng-Rui Su Yi shi Li-Jia Pan Collaborative Innovation Center of Advanced Microstructures School of Electronic Science and EngineeringNanjing UniversityNanjing 210093China

Stretchable electronics that monitor joint activity and treat diseases based on liquid metal could be used in the development of healthcare *** devices can be seamlessly integrated with human ***,most high-precision microstructures and complex patterns are difficult to fabricate due to the limitations of conventional fabrication solutions,resulting in suboptimal performance under practical ***,a liquid-metal stretchable system utilizing natural leaf veins was reported as microstructures,which was based on a biomimetic concept and utilized an all-solution process for the preparation of complex *** systems are ultra-high tensile(800%tensile strain),environmentally stable(20 days)and mechanically durable(300-cycle).The system can accurately recognize the wearer's finger bending level as well as simple gesture *** the same time,the system acts as a wearable heater,which can realize the fast heating behavior of heating up to 50℃in 3 min under the human body-safe voltage(1.5 V).The tensile stability is demonstrated by the heterogeneous integration of lasers(405 nm)with the system interconnects for a stretchable and wearable light source.

关键词： Stretchable electronics Liquid metal Stretchable conductor Vein Bionicist electronics