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Considering time-lag effects can improve the accuracy of NPP simulation using a light use efficiency model

Journal of Geographical Sciences 2023年第5期33卷 961-979页

作者： li chuanhua liU Yunfan ZHU Tongbin ZHOU Min DOU Tianbao liU lihui WU Xiaodong College of Geography and Environmental Science Northwest Normal UniversityKey Laboratory of Resource Environment and Sustainable Development of OasisLanzhou730070China Cryosphere Research Station on the Qinghai-Tibet Plateau State Key Laboratory of Cryospheric ScienceNorthwest Institute of Eco-Environment and ResourcesCASLanzhou730000China

Most terrestrial models synchronously calculate net primary productivity(NPP)using the input climate variable,without the consideration of time-lag effects,which may increase the uncertainty of NPP *** on Normalized Difference Vegetation Index(NDVI)and climate data,we used the time lag cross-correlation method to investigate the time-lag effects of temperature,precipitation,and solar radiation in different seasons on NDVI ***,we selected the Carnegie-Ames-Stanford approach(CASA)model to estimate the NPP of China from 2002 to *** results showed that the response of vegetation growth to climate factors had an obvious lag effect,with the longest time lag in solar radiation and the shortest time lag in *** time lag of vegetation to the climate variable showed great tempo-spatial heterogeneities among vegetation types,climate types,and vegetation growth *** on the validation using eddy covariance data,the results showed that the simulation accuracy of the CASA model considering the time-lag effects was effectively *** considering the time-lag effects,the average total amount of NPP modeled by CASA during 2001-2017 in China was 3.977 PgC a^(−1),which is 11.37%higher than that of the original *** study highlights the importance of considering the time lag for the simulation of vegetation growth,and provides a useful tool for the improvement of the vegetation productivity model.

关键词： net primary productivity(NPP) time-lag effects CASA model climate change

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Fluorescence Spectroscopic Studies on the Interaction Between a New Bismuth（Ⅲ） Schiff Base Complex and Bovine Serum Albumin

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Chemical Research in Chinese Universities 2017年第2期33卷 166-171页

作者： li Xu li chuanhua JIANG Jianhong GU Huiwen WEI Deliang YE lijuan HU Jilin XIAO Shengxiong ZHANG Hui li Xia li Qiangguo Hunan Provincial Key Laboratory of Xiangnan Rare-precious Metals Compounds and Applications College of Chemistry Biology and Environmental Engineering Xiangnan UniversityChenzhou 423043 P. R. China College of Chemistry and Environmental Engineering Yangtze University Jingzhou 434023 P. R. China

In this work, the binding interaction between a new bismuth（HI） Schiff base complex{ [Bi（valen）]C1.2H2O} [H2valen=N,N′bis（2-hydroxy-3-methoxyphenylmethylidene）-2,6-pyridinediamine, C2 IH19N3O4]and bovine serum albumin（BSA） was studied via fluorescence quenching method. The static quenching constant KLBand some thermodynamic parameters（e.g.,△G^θ, △H^θ and △S^θ） of the interaction were estimated. In particular, thebinding site between the complex and BSA was explored by molecular docking. On the basis of the mechanism ofFOrster energy transfer, the binding distance between the bismuth（Ⅲ） Schiff base complex and BSA（Trp.213） as wellas the transfer efficiency was obtained. Furthermore, the effect of the bismuth（Ⅲ） Schiff base complex on the con-formation of BSA was investigated using synchronous fluorescence spectroscopy.

关键词： Bismuth(Ⅲ) Schiffbase complex Bovine serum albumin Fluorescence quenching Molecular docking

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Sedimentary characteristics of lacustrine deep-water gravity flow in the third member of Paleogene Shahejie Formation in Dongying Sag,Bohai Bay Basin,China

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Frontiers of Earth Science 2023年第2期17卷 487-504页

作者： Yuanpei ZHANG chuanhua li Xuecai ZHANG Xuqing FANG Yong WANG Jinliang ZHANG Jun XIE Jinkai WANG College of Earth Science and Engineering Shandong University of Science and TechnologyQingdao 266590China Laboratory for Marine Mineral Resources Qingdao National Laboratory for Marine Science and TechnologyQingdao 266237China Sinopec Shengli Oilfield Co. Dongying 257000China Faculty of Geographical Science Beijing Normal UniversityBeijing 100875China

Many types of sedimentary systems occur in the middle of the third member of the Shahejie Formation(E_(2)S_(3)^(2))of the Paleogene in the Dongying Sag east of the Bohai Bay *** to the topography and material supply,traction and gravity flow depositions are intertwined in this area,and the sand body types are complex and diverse,making it challenging to improve the accuracy of their description and prediction and restricting oil reservoir exploration and ***,this paper documents our systematic study of the sedimentary characteristics of the southern slope of Dongying Depression,the formation mechanism of different sand body types,and the prediction of sand body ***,according to the coring well’s single-well facies and vertical rock sequence,nine single lithofacies types and five lithofacies association types were *** with the well logging facies marks of all wells,the depositional models of delta and gravity flow depositional systems were established in the study ***,the gravity flow was divided into slip,collapse,debris flow,and turbidity flow according to its development ***,the distribution law of the gravity flow sedimentary facies type was *** flow sliding deposits are primarily distributed near the delta front,slump and clastic flow deposits are distributed near the far slope,and turbidity current deposits are distributed at the far *** the gradual shrinkage of the water body in the north-west direction and the continuous advancement of the river delta,the gravity flow sand body gradually disappears in the late E_(2)S_(3)^(2) and transits to delta plain deposition.

关键词： Dongying Sag gravity flow sedimentary characteristics Bohai Bay Basin

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Synthesis and Bioactivity of a Novel Bismuthoxide Schiff-base Complex Derived from Salen-like ligand and Bismuth（III） Nitrate

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Chemical Research in Chinese Universities 2016年第2期32卷 207-211页

作者： li chuanhua JIANG Jianhong li Xu XIAO Shengxiong WEI Deliang JIANG Chao XIE Jinqi PENG Mengna GU Huiwen li Qiangguo Hunan Provincial Key Laboratory of Xiangnan Rare-precious Metals Compounds and Applications Department of Chemistry and Life Science Xiangnan University Chenzhou 423000 P. R. China State Key Laboratory of Chemo/Biosensing and Chemometrics College of Chemistry and Chemical Engineering Hunan University Changsha 410082 P. R. China

In this paper, a novel bismuthoxide Schiff-base complex [Bi9O8（vanen）3（NO3）2（CH3OH）2（H2O）·3NO3· 5.5H2O]（abbreviated as Bivanen） was synthesized with Salen-like ligand Hzvanen[Hzvanen=N,N＇-ethylene bis（3-methoxysalicylideneimine）] and bismuth（III） nitrate. Its structure was characterized by IR spectra, NMR spectra and X-ray diffraction. In particular, the biology activities of the ligand and the complex against Schizosaecharomyees pombe（S, pombe） were studied using biological mierocalorimetry. The metabolic thermogenic curves of S. pombe were measured at 32.00 ℃. Then, some quantitative thermokinetic parameters of growth metabolism of S. pombe including the rate constant（k）, inhibition ratio（I） and half inhibition concentration（IC50） were calculated. Experimental results showed that the k values of S. pombe decreased while I values of S. pombe increased with the increase of concentrations of the ligand and the complex. The IC50 of the ligand and the complex were found to be 0.067 and 0.037 mmol/L, respectively.

关键词： Bismuthoxide Schiff-base complex Mieroealorimetriy Thermokinetie property Schizosaecharomyces pombe(S, pombe)

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Influence of vapor pressure deficit on vegetation growth in China

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Journal of Arid Land 2024年第6期16卷 779-797页

作者： li chuanhua ZHANG liang WANG Hongjie PENG lixiao YIN Peng MIAO Peidong College of Geography and Environmental Science Northwest Normal UniversityLanzhou 730070China Hebei First Surveying and Mapping Institute Shijiazhuang 050000China

Vapor pressure deficit(VPD)plays a crucial role in determining plant physiological functions and exerts a substantial influence on vegetation,second only to carbon dioxide(CO_(2)).As a robust indicator of atmospheric water demand,VPD has implications for global water resources,and its significance extends to the structure and functioning of ***,the influence of VPD on vegetation growth under climate change remains unclear in *** study employed empirical equations to estimate the VPD in China from 2000 to 2020 based on meteorological reanalysis data of the Climatic Research Unit(CRU)Time-Series version 4.06(TS4.06)and European Centre for Medium-Range Weather Forecasts(ECMWF)Reanalysis 5(ERA-5).Vegetation growth status was characterized using three vegetation indices,namely gross primary productivity(GPP),leaf area index(LAI),and near-infrared reflectance of vegetation(NIRv).The spatiotemporal dynamics of VPD and vegetation indices were analyzed using the Theil-Sen median trend analysis and Mann-Kendall ***,the influence of VPD on vegetation growth and its relative contribution were assessed using a multiple linear regression *** results indicated an overall negative correlation between VPD and vegetation *** VPD intervals for the correlations between VPD and vegetation indices were identified:a significant positive correlation at VPD below 4.820 hPa,a significant negative correlation at VPD within 4.820–9.000 hPa,and a notable weakening of negative correlation at VPD above 9.000 *** exhibited a pronounced negative impact on vegetation growth,surpassing those of temperature,precipitation,and solar radiation in absolute ***_(2) contributed most positively to vegetation growth,with VPD offsetting approximately 30.00%of the positive effect of CO_(2).As the rise of VPD decelerated,its relative contribution to vegetation growth ***,the intensification of spatial variations in temperature an

关键词： vapor pressure deficit(VPD) near-infrared reflectance of vegetation(NIRv) leaf area index(LAI) gross primary productivity(GPP) Climatic Research Unit(CRU)Time-Series version 4.06(TS4.06) European Centre for Medium-Range Weather Forecasts(ECMWF)Reanalysis 5(ERA-5) climate change

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高铁运行影响下道路运输旅客选择概率变化特性研究

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西安建筑科技大学学报（自然科学版） 2018年第5期50卷 741-748页

作者：李传华吴昊长安大学经济与管理学院陕西西安710064 长安大学汽车学院陕西西安710064

为研究高铁运行对道路运输旅客选择概率变换特性,建立了基于效用理论的道路运输旅客乘车概率计算模型并提出了求解计算方法,模型描述了旅客对于道路运输及高铁衔接道路运输两类出行链的选择概率.通过某市部分出行群体调查数据为例获得... 详细信息

为研究高铁运行对道路运输旅客选择概率变换特性,建立了基于效用理论的道路运输旅客乘车概率计算模型并提出了求解计算方法,模型描述了旅客对于道路运输及高铁衔接道路运输两类出行链的选择概率.通过某市部分出行群体调查数据为例获得模型参数,根据模型绘制了出行总里程、高铁里程占比两个参数变化下乘客选择概率曲线,分析了出行链部分参数变化时与双因素共同变化时旅客选择行为的变化趋势;研究了道路运输票价下降和舒适性提升情况下,对于选择概率影响.结果发现:出行总里程、高铁里程对于出行链选择概率影响明显.随着出行链中高铁占比的增加,旅客选择高铁出行的比例逐渐增加;随着路线长度的增加,选择高铁出行的比例逐渐下降.道路运输票价折扣对于在高铁在出行链中占比较大时对于选择概率的影响并不明显,而舒适性提高对于概率的影响作用较为明显.上述结果反映了道路运输、高铁运输之间的竞争关系,对于高铁运行影响下道路运输组织测量有借鉴作用.

关键词：道路运输高铁旅客出行链选择行为效用理论

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植被对气候变化响应的地形调控作用

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地理学报 2023年第9期78卷 2256-2270页

作者：熊雪婷李传华陈佳豪西北师范大学地理与环境科学学院兰州730070

地形很大程度上导致了区域气候变化的空间异质性,从而影响植被对气候变化的响应。本文以青藏高原三江源地区为研究区,利用结构方程模型,探讨地形因子通过气温、降水对归一化差值植被指数的调控作用。研究表明:三江源地区坡度、坡向主要... 详细信息

地形很大程度上导致了区域气候变化的空间异质性,从而影响植被对气候变化的响应。本文以青藏高原三江源地区为研究区,利用结构方程模型,探讨地形因子通过气温、降水对归一化差值植被指数的调控作用。研究表明:三江源地区坡度、坡向主要通过调控降水影响植被对气候变化的响应,而海拔主要通过调控气温影响植被对气候变化的响应。海拔的影响最大,其减缓了植被对气候变化的响应,总效应为-0.35;坡度次之,其加剧了植被对气候变化的响应,总效应为0.31;坡向的调控作用最小,总效应为0.03;地形因子的总影响为-0.01,即3类地形因子具有抵消效应。三江源地区在坡度5°-15°、阴坡和海拔3000-3500 m的条件下,地形因子对植被的调控作用最大,其效应分别为0.23、0.08和0.39。在坡度5°-15°和海拔4500-5000 m时,坡向通过调控降水使得植被对气候变化的响应最大;在坡度5°-15°、阴坡和海拔小于4000 m时,海拔通过调控气温加剧植被对气候的响应,在海拔大于4000 m时,海拔主要通过调控降水来减缓植被对气候的响应。本文可为山区植被对气候变化响应规律的研究提供基础。

关键词：地形 NDVI 气候响应 SEM 调控作用三江源地区

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医疗废物焚烧高浓度氯化氢烟气净化工艺工程应用研究

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环境卫生工程 2022年第1期30卷 60-64页

作者：李传华上海环境集团股份有限公司上海200336

依托上海市某医疗废物焚烧厂医疗废物焚烧生产线,在现有烟气净化设施基础上,串联增设半干法净化设施,对半干法系统及半干法+干法组合系统对于高浓度氯化氢气体的净化能力进行验证评估。检测结果表明,采用半干法+干法工艺可将氯化氢平均... 详细信息

依托上海市某医疗废物焚烧厂医疗废物焚烧生产线,在现有烟气净化设施基础上,串联增设半干法净化设施,对半干法系统及半干法+干法组合系统对于高浓度氯化氢气体的净化能力进行验证评估。检测结果表明,采用半干法+干法工艺可将氯化氢平均浓度从1 678.00 mg/m;降低至18.47 mg/m^(3),净化效率约99%。从经济性角度分析,半干法+干法组合工艺在药剂费用上较传统干法+湿法工艺可下浮约6.6%,同时有效减少了废水的产生。

关键词：医疗废物焚烧氯化氢烟气半干法干法

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Studies of the synthesis and the bioactivities of a new Schiff base and its bismuth(Ⅲ) complex derived from o-vanillin and trimethoprim

Studies of the synthesis and the bioactivities of a new Schi...

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中国化学会第六届全国热分析动力学与热动力学学术会议

作者： li Xu JIANG Jianhong GU Huiwen WEI Deliang li chuanhua li Xia li Qiangguo Hunan Provincial Key Laboratory of Xiangnan Rare-Precious Metals Compounds and Applications College of Chemistry Biology and Environmental Engineering Xiangnan University College of Chemistry and Environmental Engineering Yangtze University

In this work, a new Schiff base ligand [o-vanillin-trimethoprim, CHNO] and its bismuth(Ⅲ) complex [BiCHNOCl] were synthesized with o-vanillin and trimethoprim in ethanol and THF solvent, respectively. The compositions and structures of two synthetic compounds were characterized by elemental analysis, chemical analysis, spectrum analysis(including MS, FT-IR, NMR and UV-Vis) and TG-DTA analysis. The thermogenic curves for the growth metabolism of Helicobacter pylori(abbreviated as H. pylori) and Schizosaccharomyces pombe(abbreviated as S. pombe) treated by different concentrations of the two synthetic compounds were determined by isothermal heat conduction microcalorimetry at 37.00 and32.00 ℃, respectively. Based on the thermogenic curves, some important thermokinetic parameters including the microbial growth rate constant(k), inhibition ratio(I), and half inhibition concentration(IC) were calculated. The experimental results indicated that both the Schiff base ligand and bismuth(Ⅲ) complex inhibited the growth of S. pombe and H. pylori, but the inhibitory ability of the two compounds on the growth metabolism of the S. pombe and H. pylori have been observed to decrease according to the following order: the free ligand > the complex and the free ligand lism of H. pylori cell lines at low concentration, but inhibited the growth of *** cell lines at high concentration.

关键词： Microcalorimetry Bioactivities Thermokinetics Bismuth(Ⅲ) complex H.pylori S.pombe

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司美格鲁肽治疗2型糖尿病的快速卫生技术评估

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中国现代应用药学 2023年第5期40卷 683-688页

作者：李传华高榕荫苏州大学附属第三医院(常州市第一人民医院)药学部江苏常州213000

目的采用快速卫生技术评估评价司美格鲁肽治疗2型糖尿病的有效性、安全性和经济性。方法检索Embase、PubMed、the Cochrane library、中国知网、万方数据库和卫生技术评估相关的网站。由2名评价者独立地根据纳入、排除标准筛选文献,... 详细信息

目的采用快速卫生技术评估评价司美格鲁肽治疗2型糖尿病的有效性、安全性和经济性。方法检索Embase、PubMed、the Cochrane library、中国知网、万方数据库和卫生技术评估相关的网站。由2名评价者独立地根据纳入、排除标准筛选文献,提取数据,评价文献质量并进行分析。结果共纳入12篇系统评价/meta分析,13篇药物经济学研究。结果显示,在有效性方面,司美格鲁肽能够显著降低HbA1c、FPG和SBP水平,并减轻体质量;在安全性方面,司美格鲁肽的胃肠道不良反应发生率相对更高,同时司美格鲁肽并不会增加低血糖和急性胰腺炎的发生率;在经济性方面,司美格鲁肽能够延长患者的质量调整生命年,其增量成本效果比低于所在国家的意愿支付阈值,具有成本效果优势。结论司美格鲁肽治疗2型糖尿病具有较好的有效性、安全性和经济性。

关键词：司美格鲁肽 2型糖尿病快速卫生技术评估

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