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Chinese Journal of Chemistry 2022年第5期40卷 617-627页

作者： Xinxin Zhang Yan Yin Yu Zhou tianliang zhu Miao Wang Huiyuan Gao School of Traditional Chinese Materia Medica Shenyang Pharmaceutical UniversityShenyangLiaoning110016 China Key Laboratory of Structure-Based Drug Design&Discovery of Ministry of Education Shenyang Pharmaceutical UniversityShenyangLiaoning110016 China

Eighteen diterpenoids were isolated from the seeds of Caesalpinia mimosoides,including four extremely infrequent cassane diterpenes,together with nine new and five known *** 7 and 8 represent the first examples of cassane diterpenoids fused with a ketone carbonyl and a ternary oxygen ring at C-4,*** 9 and 10 possess a rare five-member ring in cassane ***,these isolated components are a clue to the fact that there are lower and higher levels in the plant secondary metabolites,demonstrating the evolution of secondary metabolism of *** the isolated compounds were tested for their anti-renal fibrosis activity against TGF-β1 induced NRK-52E cell *** mRNA levels of fibrosis markerα-SMA,E-cadherin,Collagen I were tested by *** data showed compounds 6 and 9 exhibited the best anti-renal fibrosis activity and provided preliminary structure−activity relationships.

关键词： Cassane diterpene Caesalpinia mimosoides Natural products Molecular evolution Biological activity

Detection and correction of level echo based on generalized S-transform and singular value decomposition

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Journal of Measurement Science and Instrumentation 2021年第4期12卷 442-448页

作者： zhu tianliang WANG Xiaopeng WANG Qi School of Electronics and Information Engineering Lanzhou Jiaotong University Lanzhou 730070 China

The echo of the material level is non-stationary and contains many *** echo contains false echoes and noise,which affects the detection of the material level signals,resulting in low accuracy of material level measurement.A new method for detecting and correcting the material level signal is proposed,which is based on the generalized S-transform and singular value decomposition(GST-SVD).In this project,the change of material level is regarded as the low speed moving ***,the generalized S-transform is performed on the echo *** the transformation process,the variation trend of window of the generalized S-transform is adjusted according to the frequency distribution characteristics of the material level echo signal,achieving the purpose of detecting the ***,the SVD is used to reconstruct the time-frequency coefficient *** last,the reconstructed time-frequency matrix performs an inverse *** experimental results show that the method can accurately detect the material level echo signal,and it can reserve the detailed characteristics of the signal while suppressing the noise,and reduce the false echo *** with other methods,the material level measurement error does not exceed 4.01%,and the material level measurement accuracy can reach 0.40%F.S.

关键词： echo signal false echo generalized S-transform singular value decomposition(SVD) level measurement

翻修疗法对人工关节置换后合并感染的疗效研究

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中华实验和临床感染病杂志（电子版） 2014年第3期8卷 98-100页

作者：吴畏朱天亮重庆市红十字会医院(江北区人民医院)骨科重庆市400020 重庆市第三人民医院骨科

目的探究人工关节翻修治疗对人工关节置换后合并感染的疗效。方法选取2008年3月至2013年8月自重庆市红十字会医院(江北区人民医院)和重庆市第三人民医院就诊的150例人工关节置换术后并发感染的患者,依据治疗方法的不同将患者分为翻修组... 详细信息

目的探究人工关节翻修治疗对人工关节置换后合并感染的疗效。方法选取2008年3月至2013年8月自重庆市红十字会医院(江北区人民医院)和重庆市第三人民医院就诊的150例人工关节置换术后并发感染的患者,依据治疗方法的不同将患者分为翻修组和保守组;翻修组患者在常规抗感染治疗的基础上给予患者人工关节翻修治疗,保守组给予积极的常规保守抗感染治疗。结果治疗后两组患者的红细胞沉降率(ESR)、窦道形成、疼痛造成行走不便、产生轻微不适感时的负重重量、关节穿刺液细菌培养阳性例数及C-反应蛋白(CRP)水平均显著下降(P均<0.05),负重重量显著增加(P<0.05)。且翻修组效果要优于保守组(P<0.05)。结论人工关节翻修疗法可有效治疗关节置换后合并感染,明显提高患者的生活质量,建议临床积极推广实施。

关键词：人工关节置换感染翻修疗法保守疗法

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基于相电压反馈的三电平逆变器死区补偿

电源学报 2021年第2期19卷 48-56页

作者：王小鹏朱天亮程东亮房超兰州交通大学电子与信息工程学院兰州730070

为防止逆变器上下桥臂直通,通常需要在开关管驱动信号中加入死区时间,但死区时间可能导致输出电压和电流畸变。针对二极管中点箝位型NPC(neutral-point clamped)三电平逆变器的死区补偿问题,提出了一种基于相电压反馈在线计算误差电压... 详细信息

为防止逆变器上下桥臂直通,通常需要在开关管驱动信号中加入死区时间,但死区时间可能导致输出电压和电流畸变。针对二极管中点箝位型NPC(neutral-point clamped)三电平逆变器的死区补偿问题,提出了一种基于相电压反馈在线计算误差电压的死区补偿策略。该策略根据反馈相电压,在dq同步旋转坐标系下对误差电压进行实时计算。同时,针对电流极性判断中传统滤波器所造成的电流相位偏移问题,采用卡尔曼滤波对转换到dq同步旋转坐标系中的三相输出电流进行滤波,并将滤波后的电流重构到三相静止坐标系中,实现无相位偏移地判断电流极性。仿真结果表明,该方法可以较准确地判断电流极性,并能够自适应地调节补偿电压,有效地减小了输出电压的谐波含量。

关键词：三电平逆变器死区补偿相电压反馈电流重构卡尔曼滤波

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加强板输气管道的结构设计与可行性研究

化工设备与管道 2017年第5期54卷 73-77页

作者：陈珑彦李经纬朱天亮李瑞超无锡市安全生产监督管理局无锡214000 华润(南京)市政设计有限公司南京210000

针对天然气管道直跨河流的可行性问题,进行管道应力的理论计算。考虑内压、风载和重力的耦合作用,建立加强板输气管道的有限元模型,分析研究实际工况下的应力分布、整体形变、固有频率和模态振型情况,并通过强度试验和实际运行验证其可... 详细信息

针对天然气管道直跨河流的可行性问题,进行管道应力的理论计算。考虑内压、风载和重力的耦合作用,建立加强板输气管道的有限元模型,分析研究实际工况下的应力分布、整体形变、固有频率和模态振型情况,并通过强度试验和实际运行验证其可行性。结果表明:加强板输气管道结构设计合理,强度符合许用应力需求,可有效避开地震反应谱特征周期。

关键词：管道加强板应力模态可行性

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高速磁浮列车制动控制器综合测试平台研制

计算机测量与控制 2024年第3期32卷 313-318,326页

作者：江守亮付善强杨勇朱天亮刘宁王晓庆中车青岛四方机车车辆股份有限公司山东青岛266100 高速磁浮运载技术国家重点实验室山东青岛266100

针对高速磁浮列车制动控制器研制、试验、生产等环节的测试与故障诊断需求,设计研发了可移动式综合测试平台;硬件上采用PXI总线形式,根据测试需求选择测试资源板卡,通过板卡模块完成流程控制、仪器控制及通信对接等,软件上采用自动测试... 详细信息

针对高速磁浮列车制动控制器研制、试验、生产等环节的测试与故障诊断需求,设计研发了可移动式综合测试平台;硬件上采用PXI总线形式,根据测试需求选择测试资源板卡,通过板卡模块完成流程控制、仪器控制及通信对接等,软件上采用自动测试程序集(TPS)技术,通过模拟相邻控制器失效、电磁铁故障以及异常工作状况等,对制动控制器进行出厂检测,验证制动控制器的故障处理、检修维护等能力;经试验测试,该测试平台具有小型化、模块化、高效率、高精度的可移动便携性优点,实现了制动控制器的电气接口、极限工作能力、设备功能及性能指标的测试与验证,满足高速磁浮列车制动控制器检测与维护的工程应用。

关键词：高速磁浮列车制动控制器 PXI总线 TPS 综合测试平台

Characteristics of Desertification Change in Lake Basin Area in Gangcha County

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Computers, Materials & Continua 2022年第11期73卷 3771-3793页

作者： Wenzheng Yu Mingxuan zhu Li Shao Yanbo Shen Haitao Liu tianliang Chen Hanxiaoya Zhang School of Geographical Sciences Nanjing University of Information Science&TechnologyNanjing210044China Public Meteorological Service Center China Meteorological AdministrationBeijing100081China Center for Wind and Solar Energy Resources China Meteorological AdministrationBeijing100081China Faculty of Science The University of AucklandAuckland1010New Zealand

Qinghai Lake Basin area in Gangcha county is selected as the study area in terms of desertification change features in this *** on the remote sensing(RS)and global positioning system(GPS)technologies,the desertification information range from 1989 to 2014 in the study area is *** the method of the decision tree,the desertification in the research area is been divided into four grades including mild desertification,moderate desertification,severe desertification and serious *** change characteristics of desertification in the study area were analyzed in detail,which showed that the desertification in the study area experienced a process of first development and then a *** rapid development of desertification appears in the 1990s,where about 1101.22 kilometers of desertification area was increased in this *** the twenty-first Century,the desertification is gradually significant recovered and local area exist intensified *** are tendencies of interactive transform in different types of *** tendencies of different degrees of desertification land are rising,and there’re some differences in rising rates,where the expansion rate of moderate desertification is the biggest,increasing by 7.27 kilometers per year.

关键词： Desertification classification desertification expansion rate grass land change the Qinghai Lake

Characterization of the aerosol chemical composition during the COVID-19 lockdown period in Suzhou in the Yangtze River Delta,China

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Journal of Environmental Sciences 2021年第4期33卷 110-122页

作者： Honglei Wang Qing Miao Lijuan Shen Qian Yang Yezheng Wu Heng Wei Yan Yin tianliang Zhao Bin zhu Wen Lu Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters Key Laboratory for Aerosol-Cloud-Precipitation of China Meteorological AdministrationNanjing University of Information Science&TechnologyNanjing 210044China Suzhou Environmental Monitoring Center Suzhou 215000China State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry Institute of Atmospheric PhysicsChinese Academy of SciencesBeijing 100029China

To control the spread of COVID-19,rigorous restrictions have been implemented in China,resulting in a great reduction in pollutant *** this study,we evaluated the air quality in the Yangtze River Delta during the COVID-19 lockdown period using satellite and ground-based data,including particle matter(PM),trace gases,water-soluble ions(WSIs) and black carbon(BC).We found that the impacts of lockdown policy on air quality cannot be accurately assessed using MODIS aerosol optical depth(AOD) data,whereas the tropospheric nitrogen dioxide(NO_(2)) vertical column density can well reflect the influences of these restrictions on human *** to the pre-COVID period,the PM_(2.5),PM_(10),NO_(2),carbon monoxide(CO),BC and WSIs during the lockdown in Suzhou were observed to decrease by 37.2%,38.3%,64.5%,26.1%,53.3% and 58.6%,respectively,while the sulfur dioxide(SO_(2)) and ozone(O_(3)) increased by 1.5% and 104.7%.The WSIs ranked in the order of NO_(3)~->NH_(4)^(+)>SO_(4)^(2-)>Cl~->Ca^(2+)>K^(+)>Mg^(2+)>Na + during the lockdown *** comparisons with the ion concentrations during the pre-COVID period,we found that the ions NO 3-,NH 4 +,SO_(4)^(2-),Cl~-,Ca^(2+),K^(+) and Na^(+) decreased by 66.3%,48.8%,52.9%,56.9%,57.9% and 76.3%,respectively,during the lockdown,in contrast to Mg^(2+),which increased by 30.2%.The lockdown policy was found to have great impacts on the diurnal variations of Cl~-,SO_(4)^(2-),Na^(+) and Ca^(2+).

关键词： COVID-19 Lockdown Satellite data Chemical composition Diurnal variation

Distribution and Formation Causes of PM_(2.5) and O_(3) Double High Pollution Events in China during 2013–20

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Advances in Atmospheric Sciences 2024年第6期41卷 1235-1250,I0004-I0021页

作者： Zhixuan TONG Yingying YAN Shaofei KONG Jintai LIN Nan CHEN Bo zhu Jing MA tianliang ZHAO Shihua QI Department of Atmospheric Science School of Environmental SciencesChina University of GeosciencesWuhan 430074China State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry Institute of Atmospheric PhysicsChinese Academy of SciencesBeijing 100029China Research Centre for Complex Air Pollution of Hubei Province Wuhan 430074China Laboratory for Climate and Ocean–Atmosphere Studies Department of Atmospheric and Oceanic SciencesSchool of PhysicsPeking UniversityBeijing 100871China Eco-Environmental Monitoring Centre of Hubei Province Wuhan 430074China Key Laboratory of Atmospheric Chemistry China Meteorological AdministrationBeijing 100081China School of Atmospheric Physics Nanjing University of Information Science and TechnologyNanjing 210044China State Key Laboratory of Biogeology and Environmental Geology China University of GeosciencesWuhan 430074China

Fine particulate matter(PM_(2.5))and ozone(O_(3))double high pollution(DHP)events have occurred frequently over China in recent years,but their causes are not completely *** this study,the spatiotemporal distribution of DHP events in China during 2013–20 is *** synoptic types affecting DHP events are identified with the Lamb–Jenkinson circulation classification *** meteorological and chemical causes of DHP events controlled by the main synoptic types are further *** show that DHP events(1655 in total for China during 2013–20)mainly occur over the North China Plain,Yangtze River Delta,Pearl River Delta,Sichuan Basin,and Central *** occurrence frequency increases by 5.1%during 2013–15,and then decreases by 56.1%during 2015–*** main circulation types of DHP events are“cyclone”and“anticyclone”,accounting for over 40%of all DHP events over five main polluted regions in China,followed by southerly or easterly flat airflow types,like“southeast”,“southwest”,and“east”.Compared with non-DHP events,DHP events are characterized by static or weak wind,high temperature(20.9℃ versus 23.1℃)and low humidity(70.0%versus 64.9%).The diurnal cycles of meteorological conditions cause PM_(2.5)(0300–1200 LST,Local Standard Time=UTC+8 hours)and O_(3)(1500–2100 LST)to exceed the national standards at different periods of the DHP *** pollutant conversion indices further indicate the rapid secondary conversions during DHP events,and thus the concentrations of NO_(2),SO_(2) and volatile organic compounds decrease by 13.1%,4.7%and 4.4%,*** results of this study can be informative for future decisions on the management of DHP events.

关键词： double high pollution events PM_(2.5) ozone spatiotemporal distribution meteorological causes chemical composition characteristics

The Dof transcription factor COG1 acts as a key regulator of plant biomass by promoting photosynthesis and starch accumulation

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Molecular Plant 2023年第11期16卷 1759-1772页

作者： zhuoyun Wei Haoyong Zhang Meng Fang Shuyuan Lin Mingsong zhu Yuxiu Li Limin Jiang tianliang Cui Yanwei Cui Hong Kui Liang Peng Xiaoping Gou Jia Li Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations School of Life SciencesLanzhou UniversityLanzhou 730000China Gansu Key Laboratory of Gene Editing for Breeding School of Life SciencesLanzhou UniversityLanzhou 730000China Gansu Key Laboratory of Biomonitoring and Bioremediation for Environmental Pollution School of Life SciencesLanzhou UniversityLanzhou 730000China Guangdong Provincial Key Laboratory of Plant Adaptation and Molecular Design School of Life SciencesGuangzhou UniversityGuangzhou 510006China

Photosynthetic efficiency is the primary determinant of crop yield,including vegetative biomass and grain *** of key transcription factors known to directly control photosynthetic machinery can be an effective strategy to improve photosynthetic *** this study,we identified an Arabidopsis gain-of-function mutant,cogwheel1-3D,that shows a significantly enlarged rosette and increased biomass compared with wild-type *** of COG1,a Dof transcription factor,recapitulated the phenotype of cogwheel1-3D,whereas knocking out COG1 and its six paralogs resulted in a reduced rosette size and decreased *** and quantitative reverse transcription polymerase chain reaction analyses demonstrated that COG1 and its paralogs were required for light-induced expression of genes involved in *** chromatin immunoprecipitation and electrophoretic mobility shift assays indicated that COG1 can directly bind to the promoter regions of multiple genes encoding light-harvesting antenna ***,biochemical,and microscopy analyses revealed that COG1 enhances photosynthetic capacity and starch accumulation in Arabidopsis rosette ***,combined results of bioinformatic,genetic,and molecular experiments suggested that the functions of COG1 in increasing biomass are conserved in different plant *** results collectively demonstrated that COG1 acts as a key regulator of plant biomass by promoting photosynthesis and starch *** COG1 to optimize photosynthetic capacity would create new strategies for future crop yield improvement.

关键词： COG1 Dof transcription factor LHCA LHCB photosynthetic genes biomass