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Sensitivity of Estimated Total Canopy SIF Emission to Remotely Sensed LAI and BRDF Products

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Journal of Remote Sensing 2021年第1期2021卷 145-162页

作者： zhaoying zhang Yongguang zhang Jing M.Chen Weimin Ju Mirco Migliavacca Tarek S.El-Madany International Institute for Earth System Sciences Nanjing UniversityNanjingJiangsuChina Yuxiu Postdoctoral Institute Nanjing UniversityNanjingJiangsuChina Jiangsu Provincial Key Laboratory of Geographic Information Science and Technology Key Laboratory for Land Satellite Remote Sensing Applications of Ministry of Natural ResourcesSchool of Geography and Ocean ScienceNanjing UniversityNanjingJiangsuChina Huangshan Park Ecosystem Observation and Research Station Ministry of EducationChina Department of Geography and Planning University of TorontoTorontoOntarioCanada Max Planck Institute for Biogeochemistry Department Biogeochemical Integration Germany

Remote sensing of solar-induced chlorophyll fluorescence(SIF)provides new possibilities to estimate terrestrial gross primary production(GPP).To mitigate the angular and canopy structural effects on original SIF observed by sensors(SIF_(obs)),it is recommended to derive total canopy SIF _(emission)(SIF_(total))of leaves within a canopy using canopy interception(i0)and reflectance of vegetation(R_(V)).However,the effects of the uncertainties in i_(0) and R_(V) on the estimation of SIFtotal have not been well understood.Here,we evaluated such effects on the estimation of GPP using the Soil-Canopy-Observation of Photosynthesis and the Energy balance(SCOPE)model.The SCOPE simulations showed that the R^(2) between GPP and SIF_(total) was clearly higher than that between GPP and SIFobs and the differences in R^(2)(ΔR^(2))tend to decrease with the increasing levels of uncertainties in i_(0) and RV.The resultantΔR^(2) decreased to zero when the uncertainty level in i0 and RV was~30%for red band SIF(RSIF,683 nm)and~20%for far-red band SIF(FRSIF,740 nm).In addition,as compared to the TROPOspheric Monitoring Instrument(TROPOMI)SIFobs at both red and far-red bands,SIF_(total) derived using any combination of i_(0)(from MCD15,VNP15,and CGLS LAI products)and RV(from MCD34,MCD19,and VNP43 BRDF products)showed comparable improvements in estimating GPP.With this study,we suggest a way to advance our understanding in the estimation of a more physiological relevant SIF datasets(SIF_(total))using current satellite products.

关键词： BRDF estimation SCOPE

Palmitoylation of SARS-CoV-2 S protein is essential for viral infectivity

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Signal Transduction and Targeted Therapy 2021年第7期6卷 1989-1992页

作者： Zhuanchang Wu zhaoying zhang Xin Wang Jing zhang Caiyue Ren Yuming Li Lifen Gao Xiaohong Liang Peihui Wang Chunhong Ma Key Laboratory for Experimental Teratology of Ministry of Education and Dept.Immunology School of Basic Medical SciencesCheeloo Medical CollegeShandong UniversityJinanShandongChina College of Agriculture and Forestry Linyi UniversityLinyiShandongChina Advanced Medical Research Institute Shandong UniversityJinanShandongChina State Key Laboratory of Respiratory Disease National Clinical Research Center for Respiratory DiseaseGuangzhou Institute of Respiratory HealthThe First Affiliated Hospital of Guangzhou Medical UniversityGuangzhouChina Key Laboratory of Infection and Immunity of Shandong Province Shandong UniversityJinanShandongChina Collaborative Innovation Center of Technology and Equipment for Biological Diagnosis and Therapy in Universities of Shandong JinanShandongChina

Dear Editor,Severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)is the causative agent of the unprecedented coronavirus disease 2019(COVID-19).SARS-CoV-2 entry into host cells is mediated by the viral transmemb... 详细信息

关键词： acute respiratory glycoprotein

Content Determination of Trace Elements in Several Vegetables by Atomic Absorption Spectrophotometry

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Asian Agricultural Research 2019年第3期11卷 62-65页

作者： zhaoying zhang Kuiliang SHEN College of Life Science Cangzhou Normal University

The contents of Mn,Zn and Cu,three essential trace elements for human body,in Laminaria japonica,Auricularia auricula( L. ex Hook.) Underwood,Porphyra,Cucurbita pepo L.,Spinacia oleracea L. and Coriandrum sativum were determined by atomic absorption spectrophotometry. Vegetable samples were processed by wet digestion. The results showed that among the six vegetables,Mn had the highest content in A. auricula( 26. 60 μg/g) and the lowest content in C. pepo( 1. 22 μg/g); Zn had the highest content in Porphyra( 38. 07 μg/g)and the lowest content in L. japonica( 10. 32 μg/g); and Cu had the highest content in Porphyra( 10. 35 μg/g) and the lowest content in S. oleracea( 0. 61 μg/g). Each determination was repeated five times. The value of RSD was less than 10%,indicating high accuracy.

关键词： Atomic absorption spectrophotometry Vegetable Mn Zn Cu

Advances in Studies on Extraction Methods and Physiological Activities of Jujube Flavonoids

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Medicinal Plant 2019年第3期10卷 8-10页

作者： zhaoying zhang Ya’nan zhang Jing HAN Cangzhou Normal University

Jujube is rich in nutrients and functional active ingredients. For example,jujube flavonoids have significant anti-oxidation,anticancer,antibacterial and anti-inflammatory functions. This paper elaborated the advances in the studies about the extraction methods,purification methods,antioxidant properties,stability and antibacterial effects of jujube flavonoids,in order to provide a certain reference for the study of jujube flavonoids.

关键词： Jujube Extraction methods Determination methods Anti-oxidant activity

旋毛虫钙网蛋白对小鼠巨噬细胞和大鼠PBMC免疫功能的影响

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南京农业大学学报 2024年第1期47卷 1-8页

作者：张朝莹文兆海张玥李嫄徐立新陆明敏宋小凯李祥瑞严若峰南京农业大学动物医学院江苏南京210095

[目的]本文旨在研究旋毛虫钙网蛋白(TsCRT)对宿主免疫系统的影响。[方法]将原核表达纯化的重组旋毛虫钙网蛋白(rTsCRT)进行Western Blot验证;将rTsCRT与小鼠巨噬细胞共孵育,检测该蛋白对小鼠巨噬细胞增殖、NO释放和凋亡的影响;将rTsCRT... 详细信息

[目的]本文旨在研究旋毛虫钙网蛋白(TsCRT)对宿主免疫系统的影响。[方法]将原核表达纯化的重组旋毛虫钙网蛋白(rTsCRT)进行Western Blot验证;将rTsCRT与小鼠巨噬细胞共孵育,检测该蛋白对小鼠巨噬细胞增殖、NO释放和凋亡的影响;将rTsCRT与大鼠外周血单核细胞(PBMC)共孵育,检测该蛋白对大鼠PBMC转录因子和细胞因子的影响。[结果]Western blot结果显示,rTsCRT可以被感染旋毛虫的大鼠血清所识别;rTsCRT可促进小鼠巨噬细胞的增殖和NO的分泌,抑制小鼠巨噬细胞的凋亡;rTsCRT下调大鼠PBMC转录因子T-bet、Gata-3和PU.1的转录水平,上调Foxp3、Ahr、RORγt和Bcl-6的转录水平;rTsCRT上调大鼠PBMC细胞因子IFN-γ、IL-17、IL-10、TGF-β、Il-9和IL-22的转录水平,下调IL-4和IL-21的转录水平。[结论]旋毛虫钙网蛋白可刺激宿主产生Th1、Th17、Treg、Th9和Th22等多种类型的免疫反应,抑制Th2和Tfh免疫,对宿主免疫调节作用复杂。

关键词：旋毛虫钙网蛋白巨噬细胞 PBMC 免疫调节

Research Progress of Pectinase

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Medicinal Plant 2019年第3期10卷 11-15页

作者： Lili SONG Huihui PEI zhaoying zhang Cangzhou Normal University

Pectinase is a group of enzymes that can decompose complex pectin into small molecules such as galacturonic acid. It is mainly produced by microorganisms by liquid and solid fermentation and immobilized cell method. Its representative strain is Aspergillus niger,and yeast and actinomycete are also high-yield strains for screening pectinase. Pectinase can be used in many fields of life and production,such as clarification of fruit juice and wine,pulping of paper making industry,degumming of textile,extracting of traditional Chinese medicine components,animal feed and other industries,which is economic,green,and efficient and pollution-free. Moreover,pectinase is one of the four major enzymes in the world,and its practical application has very important significance,and the prospect of pectinase application is also important.

关键词： Pectinase Development and application Production Functional characteristics Prospect

基于OBE理念下“健康教育与健康促进”教学改革与实践

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科技风 2024年第10期 122-124页

作者：王昕张兆英高丹姗郑州大学护理与健康学院河南郑州450000

目的:探讨基于OBE理念下“健康教育与健康促进”教学的特色与效果。方法:以2021—2022年第一学期选修该课的学生为对照组,采用传统教学方式。以第二学期选修该课的学生为实验组,采用以OBE为导向的教学方式。比较两组学生的学业考核成绩... 详细信息

目的:探讨基于OBE理念下“健康教育与健康促进”教学的特色与效果。方法:以2021—2022年第一学期选修该课的学生为对照组,采用传统教学方式。以第二学期选修该课的学生为实验组,采用以OBE为导向的教学方式。比较两组学生的学业考核成绩,评价其健康教育能力和对课程教学的满意程度,检验革新教学模式的效果。结果:两组的平时成绩、期末成绩及综合成绩均具有显著的统计学差异。健康教育能力评价方面,两组知识、技能及总分均具有显著的统计学差异,在健康教育的态度方面两组差异无统计学意义。学生对课程满意度、学习兴趣、职业认同感等方面两组具有显著的统计学差异;在成绩满意度方面两组之间无统计学差异。结论:将OBE理念运用于“健康教育与健康促进”教学过程中能够较好地完成教学目标提高教学效果。

关键词：健康教育与健康促进成果导向教学教学改革教育护理

Effects of Different Storage Conditions on Physiological and Biochemical Characteristics of Polygala tenuifolia Willd. Seeds

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Medicinal Plant 2019年第2期10卷 69-72页

作者： zhaoying zhang Yanan zhang Lili SONG Jun WANG Shuying QIN Wenquan WANG College of Life Science Cangzhou Normal University College of Forestry Agricultural University of Hebei School of Chinese Materia Medica Beijing University of Chinese Medicine

[Objectives] Taking Polygala tenuifolia Willd. seeds as experimental material, the changes of physiological and biochemical characteristics of seeds under different storage temperatures and seed moisture contents were studied. [Methods] The seeds of P. tenuifolia Willd. with moisture contents of 3%, 5% and 15% were stored at-10 ℃, 0 ℃, 20 ℃ and 36 ℃, respectively, and the storage time was one year. The physiological and biochemical characteristics of the seeds, such as conductivity, SOD activity, POD activity, and soluble sugar content were studied.[Results] After one-year storage, as the storage temperature and seed moisture content increased, the relative conductivity, MDA content and soluble sugar content of P. tenuifolia Willd. seeds increased, while the SOD activity, POD activity, and protein content declined. This phenomenon was most obvious in the P. tenuifolia Willd. seeds with moisture content of 15%. [Conclusions] This study will provide reference for seed storage of medicinal plants.

关键词： Storage temperature Seed moisture content Polygala tenuifolia Willd. Seed vigor

Assessing the Dynamics of Grassland Net Primary Productivity in Response to Climate Change at the Global Scale

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Chinese Geographical Science 2019年第5期29卷 725-740页

作者： LIU Yangyang YANG Yue WANG Qian KHALIFA Muhammad zhang zhaoying TONG Linjing LI Jianlong SHI Aiping Department of Ecology School of Life ScienceNanjing UniversityNanjing210046China Nanjing Institute of EnvironmentalSciences Ministry of Environmental Protection of the People抯Republic of ChinaNanjing210042China Institute for Technologyand Resources Management in the Tropics and Subtropics(ITT) Technische Hochschule K鰈n-Cologne University of Applied SciencesCologne50679Germany Department of Geography University of CologneAlbertus-Magnus-PlatzD-50923CologneGermany International Institute for Earth System Sciences Jiangsu Provincial Key Laboratory of Geographic Information Science andTechnologyNanjing UniversityNanjing210023China School of Agricultural Equipment Engineering Jiangsu UniversityZhenjiang212013China

Understanding the net primary productivity(NPP) of grassland is crucial to evaluate the terrestrial carbon cycle. In this study, we investigated the spatial distribution and the area of global grassland across the globe. Then, we used the Carnegie-Ames-Stanford Approach(CASA) model to estimate global grassland NPP and explore the spatio-temporal variations of grassland NPP in response to climate change from 1982 to 2008. Results showed that the largest area of grassland distribution during the study period was in Asia(1737.23 × 104 km^2), while the grassland area in Europe was relatively small(202.83 × 10~4 km^2). Temporally, the total NPP increased with fluctuations from 1982 to 2008, with an annual increase rate of 0.03 Pg C/yr. The total NPP experienced a significant increasing trend from 1982 to 1995, while a decreasing trend was observed from 1996 to 2008. Spatially, the grassland NPP in South America and Africa were higher than the other regions, largely as a result of these regions are under warm and wet climatic conditions. The highest mean NPP was recorded for savannas(560.10 g C/(m^2·yr)), whereas the lowest was observed in open shrublands with an average NPP of 162.53 g C/(m^2·yr). The relationship between grassland NPP and annual mean temperature and annual precipitation(AMT, AP, respectively) varies with changes in AP, which indicates that, grassland NPP is more sensitive to precipitation than temperature.

关键词： Carnegie-Ames-Stanford Approach(CASA) net primary productivity(NPP) spatio-temporal dynamic climate variation grassland ecosystems