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Drivers,Trends,and Patterns of Changing Vegetation-greenness in Nansha Islands,China from 2016 to 2022

Chinese Geographical Science 2024年第4期34卷 662-673页

作者： TANG Jiasheng fu dongjie SU Fenzhen YU Hao WANG Xinhui Faculty of Geomatics Lanzhou Jiaotong UniversityLanzhou 730070China State Key Laboratory of Resources and Environmental Information System Institute of Geographic Sciences and Natural Resources ResearchChinese Academy of SciencesBeijing 100101China Collaborative Innovation Center of South China Sea Studies Nanjing 210023China College of Resources and Environment University of Chinese Academy of SciencesBeijing 100049China Beijing North-Star Technology Development Co. LtdBeijing 100120China

Changes in vegetation status generally also represents changes in the ecological health of islands and reefs(IRs).However,studies are limited of drivers and trends of vegetation change of Nansha Islands,China and how they relate to climate change and human activities.To resolve this limitation,we studied changes to the Normalized Difference Vegetation Index(NDVI)vegetation-greenness index for 22 IRs of Nansha Islands during normal and extreme conditions.Trends of vegetation greenness were analyzed using Sen's slope and Mann-Kendall test at two spatial scales(pixel and island),and driving factor analyses were performed by time-lagged partial correlation analyses.These were related to impacts from human activities and climatic factors under normal(temperature,precipitation,radiation,and Normalized Difference Built-up Index(NDBI))and extreme conditions(wind speed and latitude of IRs)from 2016 to 2022.Results showed:1)among the 22 IRs,NDVI increased/decreased significantly in 15/4 IRs,respectively.Huayang Reef had the highest NDVI change-rate(0.48%/mon),and Zhongye Island had the lowest(–0.29%/mon).Local spatial patterns were in one of two forms:dotted-form,and degradation in banded-form.2)Under normal conditions,human activities(characterized by NDBI)had higher impacts on vegetation-greenness than other factors.3)Under extreme conditions,wind speed(R^(2)=0.2337,P<0.05)and latitude(R^(2)=0.2769,P<0.05)provided limited explanation for changes from typhoon events.Our results provide scientific support for the sustainable development of Nansha Islands and the United Nations‘Ocean Decade’initiative.

关键词： island and reefs(IRs) Normalized Difference Vegetation Index(NDVI) vegetation-greenness change-rate Sen's slope Nansha Islands China

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High-resolution global mature and young oil palm plantation subclass maps for 2020

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International Journal of Digital Earth 2023年第1期16卷 2168-2188页

作者： You Xu dongjie fu Hao Yu Fenzhen Su Vincent Lyne Rong Fan Bin He Tingting Pan Jiasheng Tang Faculty of Geomatics Lanzhou Jiaotong UniversityLanzhouPeople’s Republic of China State Key Laboratory of Resources and Environmental Information System Institute of Geographic Sciences and Natural Resources ResearchChinese Academy of SciencesBeijingPeople’s Republic of China College of Resources and Environment University of Chinese Academy of SciencesBeijingPeople’s Republic of China School of Geography and Ocean Sciences Nanjing UniversityNanjingPeople’s Republic of China National-Local Joint Engineering Research Center of Technologies and Applications for National Geographic State Monitoring LanzhouPeople’s Republic of China Gansu Provincial Engineering Laboratory for National Geographic State Monitoring LanzhouPeople’s Republic of China IMAS-Hobart University of TasmaniaTasmaniaAustralia

Accurate high-resolution maps of oil palm plantations underpin effective management of environmental and socio-economic impacts at global,regional,and national levels.However,young industrial and highly irregular small-holder plantations are mostly unmapped and not included in official FAO statistics.This issue is addressed here by discriminating global oil palm plantation in 2020 into four subclasses:Industrial Mature Oil Palm(IMOP);Industrial Young Oil Palm(IYOP);Smallholder Mature Oil Palm(SMOP);and Smallholder Young Oil Palm(SYOP).Data,resolved to 4.77 m,from Planet&NICFI,Sentinel-1/2,were combined with other layers using the image-oriented classification and regression tree(CART)algorithm which performed best in classification tests.Results show that SMOP dominates distributional extent,but it was also the most accurately mapped subclass typically found at 500–1000 m altitude.IMOP had the most extensive altitude range of 500–1300 m,while IYOP and SYOP were found at similar altitudes of 500–800 m and 500–900 m respectively.Recent developments in South East Asia show oil palm plantations expanding into new areas with a slope of 24 degrees.Results provide data to support Sustainable Development Goal by assisting future oil palm-related development planning and monitoring in the world’s major oil palm-growing countries.

关键词： oil palm subclass oil palm map spatial mapping Planet&NICFI Sentinel-1/2 deforestation SDG 15

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Detection of amyloid-beta by Fmoc-KLVFF self-assembled fluorescent nanoparticles for Alzheimer’s disease diagnosis

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Chinese Chemical Letters 2021年第3期32卷 1066-1070页

作者： Dingchang Liu dongjie fu Lianbing Zhang Leming Sun School of Life Sciences Key Laboratory of Space Bioscience&BiotechnologyNorthwestern Polytechnical UniversityXi’an 710072China

The abnormal aggregation of amyloid-beta(Aβ)has been widely believed to play an important role in the pathogenesis of Alz heimer’s disease(AD),which is also recognized as one of the main biomarkers for AD diagnosis.The peptide sequence Lys-Leu-Val-Phe-Phe(KLVFF)is considered as the main driver of the fibrillation of Aβ,which also can be utilized to target Aβand inhibit its aggregation.In this study,KLVFF and Fmoc-KLVFF fluorescent nanoparticles were self-assembled through zinc coordination andπ-πstacking.The recognition of Aβaggregates including oligomers and fibrils by fluorescent nanoparticles can be realized through aromatic,hydrophobic,and hydrogen-bond interactions.The fluorescent nanoprobes can distinguish Aβaggregation formats and detect Aβat the limit of 1 pg/mL(S/N=3).Hence,the detection of Aβaggregates by fluorescent peptide nanoparticles has great potential for AD diagnosis and progression prediction.

关键词： Self-assembly Fmoc-KLVFF Fluorescent nanoparticles Amyloid-beta Alzheimer’s disease Diagnosis

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Self-assembled fluorescent tripeptide nanoparticles for bioimaging and drug delivery applications

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Chinese Chemical Letters 2020年第12期31卷 3195-3199页

作者： dongjie fu Dingchang Liu Lianbing Zhang Leming Sun School of life Sciences Key Laboratory of Space Bioscience&BiotechnologyNorthwestern Polytechnical UniversityXi'an 710072China

Peptide self-assembled nanomaterials have attracted more and more attention due to their wide applications such as drug delive ry,cell imaging,and real-time drug monitoring.However,the application of the peptide is still limited by its inherent optical properties.Here we proposed and prepared a series of fluorescent tripeptide nanoparticles(TPNPs)through π-π stacking and zinc coordination.The experimental results show that the nanoparticles(TPNPs1)formed by the self-assembly of the tripeptide tryptophan-tryptophan-tryptophan have the highest fluorescence intensity,uniform and appropriate size,and low cytotoxicity.furthermore,there was fluorescence resonance between TPNPs1 and doxorubicin,which has been successfully applied for real-time cell imaging and drug release monitoring.

关键词： Self-assembly Tripeptide Fluorescent nanoparticles Bioimaging Doxorubicin Drug delivery

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Influence of Three Remineralization Materials on Physicochemical Structure of Demineralized Enamel

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Journal of Wuhan University of Technology(Materials Science) 2014年第2期29卷 410-416页

作者：雷晋梅 GUO Jinxin fu dongjie WANG Yake DU Xijin ZHOU Liqun 黄翠 The State Key Laboratory Breding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory for Oral Biomedicine Ministry of Education School & Hospital of Stomatology Wuhan University Center of Stomatology TongJi Hospital Tongji Medical College Huazhong University of Science and Technology

This study aimed to evaluate the effect of three inorganic materials：casein phosphopeptide- amorphous calcium phosphate （CPP-ACP）, calcium sodium phosphosilicate （CSP） and sodium fluoride （NaF） on their remineralization potential. CPP-ACP, CSP and NaF were applicated in demineralized enamel for 4 h and then all enamel samples were immersed in remineralization solution. After 10 days, all samples were prepared for microhardness test, scanning electron microscopy （SEM） observation and the elemental level （%） analysis by energy dispersive X-ray spectroscopy （EDX）. The surface microhardness （SMH） values of three experimental groups were significantly higher than that of control group （P〈0.05）. The SMH value of NaF group was significantly higher than other experimental groups （P〈0.05）. The SEM micrographs showed that three remineralization materials caused distinct morphological changes and remineralized deposits were different from each other. EDX elemental analysis showed that there were significant differences in the Ca （wt%） and Ca：P molar ratio of the enamel layer among control and experimental groups. The Ca （wt%） and Ca：P molar ratio in NaF group were significantly higher than those of other experimental groups. There were no significant differences in P （wt%） among control and experimental groups （P〈0.05）. Three remineralization materials used in our study had the potential of remineralizing the demineralized enamel. NaF is the best and most feasible choice to be used in remineralizing the demineralized enamel.

关键词： remineralization materials microhardness surface morphology elemental analysis

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Evaluation of Apatite-coated Chitosan Microspheres for Bone Regeneration

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Journal of Wuhan University of Technology(Materials Science) 2014年第2期29卷 391-397页

作者：徐飞 YIN Miao DING Huifen SONG Fangfang fu dongjie ZHANG Jiayin 王家伟 Hubei-MOST KLOS & KLOBM School and Hospital of Stomatology Wuhan University

The apatite-coated chitosan microspheres were fabricated by incubating chitosan in five times simulated body fluid. The apatite deposited on the microspheres was similar to natural bone mineral, as demonstrated by scanning electron microscopy, X-ray diffraction spectra and Fourier transformed-infrared spectroscopy analyses. Rat bone marrow-derived mesenchymal stem cells(BMSCs) were seeded on apatitecoated microspheres to investigate the effect of this scaffold on cell proliferation and differentiation. BMSCs seeded on uncoated microspheres were served as a control. In vivo experiment was evaluated by transplanting the microspheres loaded with or without BMSCs in 5-mm cranial defects of Wistar rats. Bone regeneration was investigated via micro-CT and histological analysis. It was found that apatite-coated chitosan microspheres could significantly promote the proliferation and alkaline phosphatase activity of BMSCs compared with uncoated microspheres. Histological slices and Micro-CT images at 8 weeks revealed much better regeneration of bone in the apatite-coated microspheres loaded with BMSCs than the control. In addition, the defect filled with pure microspheres induced little new bone formation. Our findings suggest that the apatite-coated chitosan microspheres scaffold is a promising carrier of stem cells for cranial bone tissue engineering.

关键词： chitosan microspheres apatite bone regeneration

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ADAMTS2通过PI3K/Akt信号通路促进口腔鳞癌细胞转移和侵袭

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华中科技大学学报（医学版） 2023年第4期52卷 466-472页

作者：周兵付东杰姜蕾武汉大学口腔医院武汉430079 武汉大学人民医院口腔科武汉430060

目的通过GEO数据库筛选口腔鳞癌相关的差异表达mRNA,并通过体外功能实验明确ADAMTS2对口腔鳞癌转移的作用及机制。方法运用GEO2R对两个表达谱进行差异基因分析,通过String构建PPI网络,利用Cytoscape中的Hubba和Mcode插件筛选关键基因,... 详细信息

目的通过GEO数据库筛选口腔鳞癌相关的差异表达mRNA,并通过体外功能实验明确ADAMTS2对口腔鳞癌转移的作用及机制。方法运用GEO2R对两个表达谱进行差异基因分析,通过String构建PPI网络,利用Cytoscape中的Hubba和Mcode插件筛选关键基因,并通过GEPIA和Kaplan-Meier Plotter对筛选到的重要基因进行表达量和生存曲线的分析。随后,选定ADAMTS2作为研究主题,通过LinkedOmic数据库对ADAMTS2相关联的基因进行识别,并对Top 50正负相关基因进行功能富集分析。最后,通过体外实验对ADAMTS2在口腔鳞癌细胞中的功能进行验证。结果在细胞迁移和侵袭实验中,过表达ADAMTS2的SCC15和HSC3细胞迁移和侵袭能力高于对照组,敲低ADAMTS2则降低了口腔鳞癌细胞的迁移、侵袭能力;OSCC中的差异表达基因与ADAMTS2呈正相关;Top 50与ADAMTS2相关的基因主要与IL-17信号通路、细胞迁移的正向调节、血管生成的调节以及糖原代谢过程相关;ADAMTS2通过PI3K-Akt促进口腔鳞状细胞癌(OSCC)的糖酵解,进而促进OSCC细胞的转移和侵袭。结论ADAMTS2可能是OSCC转移和不良预后的潜在关键基因。

关键词：口腔鳞状细胞癌 GEO 转移生存分析

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Chemical Property and Antibacterial Activity of Metronidazole-decorated Ti through Adhesive Dopamine

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Journal of Wuhan University of Technology(Materials Science) 2019年第4期34卷 968-972页

作者：付东杰 LU Yi GAO Shaohuai PENG Youjian 段海英 Department of Stomatology Renmin Hospital of Wuhan UniversityWuhan 430060China The State Key Laboratory Breding Base of Basic Science of Stomatology(Hubei-MOST) Wuhan 430079China Wuhan Centural Chinese Construction Third Engineering Bureau Wuhan 430022China

In order to present a novel metronidazole-decorated Ti implanted with antibacterial activity through adhesive dopamine, and prepare metronidazole-decorated Ti, Ti substrates were pre-modified with dopamine(DA) coating, and metronidazole was subsequently immobilized onto the surface of DA-modified Ti substrates. The prepared MET-decorated Ti interfaces were prepared for surface characterization tests:contacting angle measurements, scanning electron microscope, ATR-FTIR spectroscopy and in vitro anti-biofilm formation assay. Statistical tests were performed using by SPSS16.0. Contacting angle measurement, scanning electron microscopy, and ATR-FTIR spectroscopy confirmed the successful presence of MET grafted on the Ti surface. In addition, the MET-decorated Ti induced good in vitro antibacterial activity toward Escherichia coli and Streptococcus mutans,Gram-negative and Gram-positive bacteria, respectively. The modified Ti substrate with enhanced antibacterial activity holds a great potential as implanting material for applications in dental and bone graft substitutes.

关键词： dopamine metronidazole-decorated antibacterial activity

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利用网络平台非法开展证券、期货业务构成非法经营罪

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人民司法 2022年第8期 31-33页

作者：符东杰张德江苏省南通市中级人民法院

【裁判要旨】行为人在未经批准的情况下,以作为投资人与券商的中介人的方式,通过建殳微信群、视频讲课等方式进行虚假宣传,劝说、推介客户在软件平台购买股票期权,实施的居间介绍行为属于与股票期权交易相关的活动,在谋取非法利益的同... 详细信息

【裁判要旨】行为人在未经批准的情况下,以作为投资人与券商的中介人的方式,通过建殳微信群、视频讲课等方式进行虚假宣传,劝说、推介客户在软件平台购买股票期权,实施的居间介绍行为属于与股票期权交易相关的活动,在谋取非法利益的同时造成了对股票期货交易市场秩序的严重扰乱和破坏。该犯罪行为在占有获取财物的方式以及侵害的犯罪客体等方面与诈骗罪的构成要件存在区别,应当以非法经营罪追究刑事责任。

关键词：非法经营罪追究刑事责任非法利益犯罪客体犯罪行为诈骗罪股票期权裁判要旨

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Evaluation for Bone Regeneration Mierospheres

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Journal of Wuhan University of Technology(Materials Science) 2014年第2期29卷 391-397页

作者： XU Fei YIN Miao DING Huifen SONG Fangfang fu dongjie ZHANG Jiayin WANG Jiawei Hubei-MOST KLOS & KLOBM School and Hospital of Stomatology Wuhan University Wuhan 430079 China

The apatite-coated chitosan microspheres were fabricated by incubating chitosan in five times simulated body fluid. The apatite deposited on the microspheres was similar to natural bone mineral, as demonstrated by scanning electron microscopy, X-ray diffraction spectra and Fourier transformed-infrared spectroscopy analyses. Rat bone marrow-derived mesenchymal stem cells （BMSCs） were seeded on apatite- coated microspheres to investigate the effect of this scaffold on cell proliferation and differentiation. BMSCs seeded on uncoated microspheres were served as a control. In vivo experiment was evaluated by transplanting the microspheres loaded with or without BMSCs in 5-mm cranial defects of Wistar rats. Bone regeneration was investigated via micro-CT and histological analysis. It was found that apatite-coated chitosan microspheres could significantly promote the proliferation and alkaline phosphatase activity of BMSCs compared with uncoated microspheres. Histological slices and Micro-CT images at 8 weeks revealed much better regeneration of bone in the apatite-coated microspheres loaded with BMSCs than the control. In addition, the defect filled with pure microspheres induced little new bone formation. Our findings suggest that the apatite-coated chitosan microspheres scaffold is a promising carrier of stem cells for cranial bone tissue engineering.

关键词： chitosan microsphercs apatite bone regeneration

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