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槲皮素通过SIRT1/STAT3/GSDME抑制炎症和焦亡缓解肾脏足细胞损伤

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中国药理学通报 2024年第7期40卷 1279-1287页

作者：王洁琼李戈汪少华万宇刘云黄丛改郭渠莲钟芳芳西南医科大学附属医院细胞病理科四川泸州646000 西南医科大学附属医院泌尿外科四川泸州646000 西南医科大学附属医院儿科儿童血液肿瘤与出生缺陷实验室四川省出生缺陷临床医学研究中心四川泸州646000

目的探讨槲皮素(quercetin,Que)在肾脏足细胞炎症损伤中的作用和机制。方法将MPC5小鼠足细胞分为正常糖对照组(NG)、甘露醇对照组(MA)、高糖组(HG)和高糖+槲皮素组(HG+Que)。CCK-8法和流式细胞仪检测细胞增殖和凋亡情况;Western blot检... 详细信息

目的探讨槲皮素(quercetin,Que)在肾脏足细胞炎症损伤中的作用和机制。方法将MPC5小鼠足细胞分为正常糖对照组(NG)、甘露醇对照组(MA)、高糖组(HG)和高糖+槲皮素组(HG+Que)。CCK-8法和流式细胞仪检测细胞增殖和凋亡情况;Western blot检测SIRT1、STAT3、细胞凋亡相关蛋白(Bax、Bcl-2、caspase-3)和焦亡蛋白GSDME的表达情况;ELISA检测细胞上清中炎症因子(IL-6、TNF-α、IL-18、IL-1β)的表达水平。利用siRNA干扰技术,在高糖诱导+Que干预下,设置干扰对照组(HG+si-NC+Que)和SIRT1干扰组(HG+si-SIRT1+Que),进一步评估SIRT1在高糖诱导+Que作用下的生物学意义。结果与高糖对照组比较,40μmol·L^(-1)的Que能够缓解高糖诱导的MPC5细胞凋亡,降低凋亡蛋白Bax和caspase-3表达,增加抗凋亡蛋白Bcl-2表达;Que能降低高糖诱导的炎症因子TNF-α、IL-6、IL-1β和IL-18表达。机制上,Que能够缓解高糖对SIRT1表达的抑制作用,降低STAT3激活和N-GSDME表达,抑制细胞焦亡。与si-NC对照组比较,si-SIRT1组能够逆转Que对高糖诱导足细胞炎症损伤的保护作用,凋亡蛋白Bax和caspase-3表达升高,抗凋亡蛋白Bcl-2表达降低,细胞上清中炎症因子TNF-α、IL-6、IL-1β和IL-18表达升高,STAT3和N-GSDME表达升高。结论Que通过SIRT1/STAT3/GSDME通路,抑制细胞焦亡,缓解肾脏足细胞的炎症损伤。

关键词：槲皮素 SIRT1 STAT3 足细胞炎症焦亡

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项目管理在金属包装企业研发中的应用

绿色包装 2024年第5期 75-78页

作者：王洁琼龚经纬陈玉飞奥瑞金科技股份有限公司北京101407

随着企业创新转型发展,项目管理在奥瑞金科技股份有限公司包装产品研发创新方面起着重要作用。本文介绍了金属包装研发项目的特点,总结了公司在项目管理机构、矩阵型组织结构和项目管理流程方面的具体措施,分析了项目管理过程中人才培... 详细信息

随着企业创新转型发展,项目管理在奥瑞金科技股份有限公司包装产品研发创新方面起着重要作用。本文介绍了金属包装研发项目的特点,总结了公司在项目管理机构、矩阵型组织结构和项目管理流程方面的具体措施,分析了项目管理过程中人才培养、信息传递和评审总结方面的问题,并提出了针对性的优化对策,以期为金属包装行业研发项目管理提供参考借鉴。

关键词：项目管理金属包装研发项目

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Carbon emission reduction:Contribution of photovoltaic power and practice in China

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China Geology 2024年第2期7卷 371-376页

作者： Liang wang Li-qiong Jia Geng Xie Xi-jie Chen Yang Liu Natural Resources Integrated Survey Command Center China Geological SurveyMinistry of Natural ResourcesBeijing 100055China Development and Research Center China Geological SurveyMinistry of Natural ResourcesBeijing 100037China Center for Geophysical Survey China Geological SurveyLangfang 065000China

As a clean and renewable form of energy,photovoltaic(PV)power generation converts solar energy into electrical energy,reducing the consumption of fossil fuels and significantly lowering greenhouse gas emissions.Amidst the global transition towards cleaner forms of energy,countries all around the world are vigorously developing PV technology.

关键词： convert power emissions

A phenology-based vegetation index for improving ratoon rice mapping using harmonized Landsat and Sentinel-2 data

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Journal of Integrative Agriculture 2024年第4期23卷 1164-1178页

作者： Yunping Chen jie Hu Zhiwen Cai Jingya Yang Wei Zhou qiong Hu Cong wang Liangzhi You Baodong Xu Macro Agriculture Research Institute College of Plant Science and TechnologyHuazhong Agricultural UniversityWuhan 430070China College of Resources and Environment Huazhong Agricultural UniversityWuhan 430070China Key Laboratory of Agricultural Remote Sensing Ministry of Agriculture and Rural Affairs/Institute of Agricultural Resources and Regional PlanningChinese Academy of Agricultural SciencesBeijing 100081China Key Laboratory for Geographical Process Analysis&Simulation of Hubei Province/College of Urban and Environmental Sciences Central China Normal UniversityWuhan 430079China International Food Policy Research Institute NWWashingtonD.C.20005USA

Ratoon rice,which refers to a second harvest of rice obtained from the regenerated tillers originating from the stubble of the first harvested crop,plays an important role in both food security and agroecology while requiring minimal agricultural inputs.However,accurately identifying ratoon rice crops is challenging due to the similarity of its spectral features with other rice cropping systems(e.g.,double rice).Moreover,images with a high spatiotemporal resolution are essential since ratoon rice is generally cultivated in fragmented croplands within regions that frequently exhibit cloudy and rainy weather.In this study,taking Qichun County in Hubei Province,China as an example,we developed a new phenology-based ratoon rice vegetation index(PRVI)for the purpose of ratoon rice mapping at a 30 m spatial resolution using a robust time series generated from Harmonized Landsat and Sentinel-2(HLS)images.The PRVI that incorporated the red,near-infrared,and shortwave infrared 1 bands was developed based on the analysis of spectro-phenological separability and feature selection.Based on actual field samples,the performance of the PRVI for ratoon rice mapping was carefully evaluated by comparing it to several vegetation indices,including normalized difference vegetation index(NDVI),enhanced vegetation index(EVI)and land surface water index(LSWI).The results suggested that the PRVI could sufficiently capture the specific characteristics of ratoon rice,leading to a favorable separability between ratoon rice and other land cover types.Furthermore,the PRVI showed the best performance for identifying ratoon rice in the phenological phases characterized by grain filling and harvesting to tillering of the ratoon crop(GHS-TS2),indicating that only several images are required to obtain an accurate ratoon rice map.Finally,the PRVI performed better than NDVI,EVI,LSWI and their combination at the GHS-TS2 stages,with producer's accuracy and user's accuracy of 92.22 and 89.30%,respectively.These results demonstrate that the proposed PRV

关键词： ratoon rice phenology-based ratoon rice vegetation index(PRVI) phenological phase feature selection Harmonized Landsat Sentinel-2 data

A Cross-matching Service for Data Center of Xinjiang Astronomical Observatory

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Research in Astronomy and Astrophysics 2024年第1期24卷 119-127页

作者： Hai-Long Zhang jie wang Xin-Chen Ye Wan-qiong wang Jia Li Ya-Zhou Zhang Xu Du Han Wu Ting Zhang Xinjiang Astronomical Observatory Chinese Academy of SciencesUrumqi 830011China Key Laboratory of Radio Astronomy Chinese Academy of SciencesNanjing 210008China National Astronomical Data Center Beijing 100101China University of Chinese Academy of Sciences Beijing 100049China

Cross-matching is a key technique to achieve fusion of multi-band astronomical catalogs. Due to different equipment such as various astronomical telescopes, the existence of measurement errors, and proper motions of the celestial bodies, the same celestial object will have different positions in different catalogs, making it difficult to integrate multi-band or full-band astronomical data. In this study, we propose an online cross-matching method based on pseudo-spherical indexing techniques and develop a service combining with high performance computing system(Taurus) to improve cross-matching efficiency, which is designed for the Data Center of Xinjiang Astronomical Observatory. Specifically, we use Quad Tree Cube to divide the spherical blocks of the celestial object and map the 2D space composed of R.A. and decl. to 1D space and achieve correspondence between real celestial objects and spherical patches. Finally, we verify the performance of the service using Gaia 3 and PPMXL catalogs. Meanwhile, we send the matching results to VO tools-Topcat and Aladin respectively to get visual results. The experimental results show that the service effectively solves the speed bottleneck problem of crossmatching caused by frequent I/O, and significantly improves the retrieval and matching speed of massive astronomical data.

关键词： virtual observatory tools astronomical databases:miscellaneous catalogs

Field Load Test Based SHM System Safety Standard Determination for Rigid Frame Bridge

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Structural Durability & Health Monitoring 2024年第3期18卷 361-376页

作者： Xilong Zheng qiong wang Di Guan School of Civil and Architectural Engineering Harbin UniversityHarbin150076China

The deteriorated continuous rigid frame bridge is strengthened by external prestressing. Static loading tests wereconducted before and after the bridge rehabilitation to verify the effectiveness of the rehabilitation process. Thestiffness of the repaired bridge is improved, and the maximum deflection of the load test is reduced from 37.9 to27.6 mm. A bridge health monitoring system is installed after the bridge is reinforced. To achieve an easy assessmentof the bridge’s safety status by directly using transferred data, a real-time safety warning system is createdbased on a five-level safety standard. The threshold for each safety level will be determined by theoretical calculationsand the outcomes of static loading tests. The highest risk threshold will be set at the ultimate limit statevalue. The remaining levels, namely middle risk, low risk, and very low risk, will be determined usingreduction coefficients of 0.95, 0.9, and 0.8, respectively.

关键词： Continuous rigid frame bridge rehabilitation long-term monitoring field load test safety standard determination

Visible Light-Induced[3+2]Annulation Reaction of Alkenes with Vinyl Azides:Direct Synthesis of Functionalized Pyrroles

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Chinese Journal of Chemistry 2024年第2期42卷 151-156页

作者： Ming Yang Xin-Yu wang jie wang Yu-Long Zhao Jilin Province Key Laboratory of Organic Functional Molecular Design&Synthesis Faculty of ChemistryNortheast Normal UniversityChangchunJilin 130024China

A photocatalytic[3+2]annulation of alkenes with vinyl azides was developed under irradiation by visible light in the presence of organic dye photocatalysts.Broad substrate scope and high functional group tolerance were demonstrated by more than 50 examples.The reaction provides a novel and efficient method for the synthesis of polyfunctionalized pyrroles under very mild metal-free conditions without other additives.

关键词： Photocatalysis Vinyl azides Alkenes Pyrroles Annulation Radical reactions

Quaternion-Based Adaptive Trajectory Tracking Control of a Rotor-Missile with Unknown Parameters Identification

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Defence Technology（防务技术） 2024年第1期31卷 375-386页

作者： jie Zhao Zhongjiao Shi Yuchen wang Wei wang Beijing Institute of Technology Beijing 100081China

This paper investigates the adaptive trajectory tracking control problem and the unknown parameter identification problem of a class of rotor-missiles with parametric system uncertainties.First,considering the uncertainty of structural and aerodynamic parameters,the six-degree-of-freedom(6Do F) nonlinear equations describing the position and attitude dynamics of the rotor-missile are established,respectively,in the inertial and body-fixed reference frames.Next,a hierarchical adaptive trajectory tracking controller that can guarantee closed-loop stability is proposed according to the cascade characteristics of the 6Do F dynamics.Then,a memory-augmented update rule of unknown parameters is proposed by integrating all historical data of the regression matrix.As long as the finitely excited condition is satisfied,the precise identification of unknown parameters can be achieved.Finally,the validity of the proposed trajectory tracking controller and the parameter identification method is proved through Lyapunov stability theory and numerical simulations.

关键词： Rotor-missile Adaptive control Parameter identification Quaternion control

Cationic Conjugated Oligomers for Efficient and Rapid Antibacterial Photodynamic Therapy via Both Type Ⅰ and Type Ⅱ Pathways

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Chinese Journal of Chemistry 2024年第1期42卷 61-66页

作者： Huan wang Shuwen Guo qiong Yuan Meiqi Li Yanli Tang Country Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province Key Laboratory of Applied Surface and Colloid ChemistryMinistry of EducationSchool of Chemistry and Chemical EngineeringShaanxi Normal UniversityXi'anShaanxi 710119China

Recently,photodynamic therapy(PDT)has attracted wide attention due to its less susceptibility to drug resistance,broad-spectrum biocidal activity and biosafety in normal tissues.However,the traditional photosensitizers(Ps)face the disadvantage of poor therapeutic efficacy due to the requirement of an aerobic environment to generate ^(1)O_(2) through Type Ⅱ pathway.Herein,we designed and synthesized a novel cationic conjugated oligomer oligo(phenylene vinylene)(OPV)and studied its antibacterial photodynamic activity against both Gram-negative Escherichia coli(E.coli)and Gram-positive bacteria methicillin-resistant Staphylococcus aureus(MRSA).Importantly,the OpV can rapidly produce reactive oxygen species(ROs)through double pathways,Type Ⅰ and Ⅱ mechanism under white light irradiation,and efficiently kill E.coli and MRSA at a nanomolar level.The dual type photosensitizing capability makes OPV promising for enhanced PDT to treat pathogens and tumors in complex environments.

关键词： Conjugated oligomers Antibacterial photodynamic therapy Oligo(phenylene vinylene) Reactive oxygen species Typelandll pathways