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Decadal changes of the intraseasonal oscillation during 1979–2016

Advances in Climate Change Research 2021年第6期12卷 772-782页

作者： wu nan LI Ying LI Juan FENG Li-Cheng LIU Fei Earth System Modeling and Climate Dynamics Research Center Nanjing University of Information Science and TechnologyNanjing210044China Shanghai ZhongChuan NERC-SDT Co. LtdShanghai201114China National Marine Environmental Forecasting Center Ministry of Natural ResourcesBeijing100081China Key Laboratory of Marine Hazards Forecasting National Marine Environmental Forecasting CenterMinistry of Natural ResourcesBeijing100081China School of Atmospheric Sciences Sun Yat-sen University Guangdong Province Key Laboratory for Climate Change and Natural Disaster Studiesand Southern Marine Science and Engineering Guangdong LaboratoryZhuhai519082China

The Intraseasonal Oscillation (ISO) is the cornerstone for 2–8-week subseasonal prediction. Understanding the decadal variation of the ISO is important for improving subseasonal prediction;however, there is still a gap in our knowledge of ISO dynamics. Here, we presented a method, an Empirical Orthogonal Function (EOF) analysis of 11-year-sliding ISO evolution, to objectively detect decadal variation of the ISO originated from the equatorial Indian Ocean (EIO) during 1979–2016. The results show that the properties of ISO have a notable decadal change since 1998 for both boreal summer and boreal winter seasons, mainly in its evolution rather than in its intensity at origin. During the pre-1998 epoch, the boreal summer intraseasonal oscillation (BSISO), was confined to the Indian Ocean;since 1998, however, it propagated northeastward across the Maritime Continent (MC) and the intraseasonal variability over the western North Pacific was significant enhanced. On the other hand, the boreal-winter ISO, usually known as Madden-Julian Oscillation (MJO) shows minor changes in MC ‘barrier effect’ between the two epochs, and continuously propagates eastward across the MC. The MJO only shows suppressed activity over the central equatorial Pacific in the post-1998 epoch. These decadal changes are related to the eastern Pacific cooling during the ‘global warming hiatus’ period rather than to the four-decade global warming. Results here provide a set of potential precursors for foreseeing ISO propagation under different mean states.

关键词： Decadal variation Intraseasonal oscillation Madden-Julian oscillation Boreal summer intraseasonal oscillation Global warming hiatus

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Conflicting selection pressures on seed size and germination caused by carnivorous seed dispersers

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Integrative Zoology 2023年第5期18卷 799-816页

作者： Jifa CUI Yaqian ZHANG Jinyu GUO nan wu Youbing ZHOU Engineering Research Center of Eco-environment in Three Gorges Reservoir Region Ministry of EducationChina Three Gorges UniversityYichangChina

Plants produce nutritious,fleshy fruits that attract various animals to facilitate seed dispersal and recruitment ***-specific differential selection of seed size by multiple frugivorous disperser assemblages may affect the subsequent germination of the ingested ***,there is little empirical evidence supporting this *** the present study,we documented conflicting selection pressures exerted on seed size and germination by five frugivorous carnivores on a mammal-dispersed pioneer tree,the date-plum persimmon(Diospyros lotus),in a subtropical *** analyses revealed that these carnivores acted as primary seed dispersers of *** also observed that seed sizes were selected based on body mass and were species-specific,confirming the“gape limitation”hypothesis;three small carnivores(the masked palm civet Paguma larvata,yellow-throated marten Martes flavigula,and Chinese ferret-badger Melogale moschata)significantly preferred to disperse smaller seeds in comparison with control seeds obtained directly from wild plants whereas the largest Asiatic black bears(Ursus thibetanus)ingested larger *** dispersed by medium-sized hog badgers(Arctonyx albogularis)were not significantly different from control ***,regarding the influence of gut passage on seed germination,three arboreal dispersal agents(martens,civets,and bears)enhanced germination success whereas terrestrial species(ferret-badgers and hog badgers)inhibited the germination process compared with undigested control *** conflicting selection pressures on seed size and germination may enhance the heterogeneity of germination dynamics and thus increase species fitness through diversification of the regeneration *** results advance our understanding of seed dispersal mechanisms and have important implications for forest recruitment and ecosystem dynamics.

关键词： fleshy fruit gut treatment seed germination seed size selection pressure

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An efficient and innovative catalytic reactor for VOCs emission control

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Science Bulletin 2019年第9期64卷 625-633页

作者： Achraf El Kasmi Guan-Fu Pan Ling-nan wu Zhen-Yu Tian Institute of Engineering Thermophysics Chinese Academy of Sciences University of Chinese Academy of Sciences Energy Conservation Corporation Ltd.of China Coal Research Institute Beijing 100013China

Efficient mixing and thermal control are important in the flow reactor for obtaining a high product yield and ***,we report a heterogeneous chemical kinetic study of propene oxidation within a newly designed catalytic jet-stirred reactor(CJSR).To better understand the interplay between the catalytic performances and properties,the CuO thin films have been characterized and the adsorbed energies of propene on the adsorbed and lattice oxygen were calculated using density functional theory(DFT)*** and morphology analyses revealed a monoclinic structure with nano-crystallite size and porous microstructure,which is responsible for holding an important quantity of adsorbed *** residence time inside the flow CJSR(1.12–7.84 s)makes it suitable for kinetic study and gives guidance for *** kinetic study revealed that using CJSR the reaction rate increases with O_2concentration that is commonly not achievable for catalytic flow tube reactor,whereas the reaction rate tends to increase slightly above 30%of O_2due to the catalyst surface ***,DFT calculations demonstrated that adsorbed oxygen is the most involved oxygen,and it has found that the pathway of producing propene oxide makes the reaction of C_3H_6over CuO surface more likely to ***,these findings revealed that CJSR combined with theoretical calculation is suitable for kinetic study,which can pave the way to investigate the kinetic study of other exhaust gases.

关键词： Novel catalytic jet-stirred reactor Heterogeneous kinetic study Exhaust emission control CuO thin film catalyst DFT calculation

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Using Raman Spectroscopy and ab initio Calculations to Investigate Intermolecular Hydrogen Bonds in Binary Mixture (Tetrahydrofuran+Water)

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Chemical Research in Chinese Universities 2011年第4期27卷 693-696页

作者： wu nan-nan OUYANG Shun-li LI Zuo-wei LIU Jing-yao GAO Shu-qin State Key Laboratory of Theoretical and Computational Chemistry Institute of Theoretical Chemistry Jilin University Changchun 130021 R R. China College of Physics Jilin University Changchun 130012 P. R. China

We analyzed the properties and structures of the hydrogen-bonded complexes of tetrahydrofuran（THF） and water by means of experimental Raman spectra and ab initio *** optimized geometries and vibrational frequencies of the neat THF molecule and its hydrogen-bonded complexes with water（THF/H2O） were calculated at the MP2/6-311＋G（d,p） level of *** found that the intermolecular hydrogen bonds which are formed from the binary mixtures of the neat THF and water with different molar ratios could explain the changes in wavenumber position and linewidth very *** combination of ab initio calculations and experimental Raman spectral data provides an insight into the hydrogen bonds leading to the concentration dependent changes in the spectral features.

关键词： Hydrogen bond Raman spectroscopy Ab initio calculation

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血管生成素样蛋白4通过调节成纤维细胞和内皮细胞功能影响糖尿病足进程

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中国组织工程研究 2025年第25期29卷 5396-5402页

作者：宋庆宏吴楠史燕崔洪雨刘飞刘汉冲周宁姚斌天津市人民医院血管疾病诊疗中心天津市300121 天津大学天津市300072

背景:研究表明,血管因素对糖尿病足的发生具有重要影响。目的:探讨血管生成素样蛋白4在糖尿病足形成中的重要作用。方法:①对糖尿病足患者的基因表达谱数据进行生物信息学分析,找到关键基因。收集糖尿病足患者以及无糖尿病健康人的皮肤... 详细信息

背景:研究表明,血管因素对糖尿病足的发生具有重要影响。目的:探讨血管生成素样蛋白4在糖尿病足形成中的重要作用。方法:①对糖尿病足患者的基因表达谱数据进行生物信息学分析,找到关键基因。收集糖尿病足患者以及无糖尿病健康人的皮肤标本进行苏木精-伊红染色、免疫组化染色以及qRT-PCR实验,检测血管生成素样蛋白4表达情况。②培养人永生化皮肤成纤维细胞系和原代人脐静脉内皮细胞,将2种细胞分别分为对照组和外源性补充血管生成素样蛋白4组,通过划痕实验以及CCK-8实验分别检测成纤维细胞的迁移能力和增殖能力,通过Ki67实验检测内皮细胞的增殖能力。结果与结论:①生信分析发现,血管生成素样蛋白4基因的下调可能是导致糖尿病足形成的关键基因。②苏木精-伊红染色结果显示,与正常皮肤相比,血管生成素样蛋白在糖尿病足皮肤内弱表达,且其mRNA水平相对表达量降低(P<0.01)。③划痕实验结果显示,与对照组相比,血管生成素样蛋白4组成纤维细胞迁移能力明显增强;CCK-8细胞增殖实验显示,血管生成素样蛋白4组成纤维细胞的吸光度值在24,48 h均高于对照组(P<0.01,P<0.001);提示血管生成素样蛋白4可增强高糖处理的成纤维细胞迁移及增殖能力。④Ki67实验结果显示,与对照组相比,血管生成素样蛋白4组内皮细胞Ki67阳性细胞数目明显多于对照组;CCK-8细胞增殖实验显示,血管生成素样蛋白4组内皮细胞的吸光度值在24,48 h均高于对照组(P<0.05,P<0.001)。(5)以上结果均提示血管生成素样蛋白4可增强高糖处理内皮细胞的增殖能力。

关键词：血管生成素样蛋白4 成纤维细胞血管内皮细胞糖尿病足生物信息学分析

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Transformation devices with optical nihility media and reduced realizations

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Frontiers of physics 2019年第4期14卷 117-124页

作者： Lin Xu Qian-nan wu Yang-Yang Zhou Huan-Yang Chen Key Laboratory of Opto-Electronic Information Acquisition and Manipulation of Ministry of Education & Institutes of Physical Science and Information Technology Anhui University Hefei 230601 China School of Science North University of China Taiyuan 030051 China Institute of Electromagnetics and Acoustics and Department of Electronic Science Xiamen University Xiamen 361005 China

Starting from optical nihility media (ONM),we design several intriguing devices with transformation optics method in two dimensions,such as a wave splitter,a concave lens,a field rotator,a concentrator,and an invisibility *** the extreme anisotropic property of ONM hinders the fabrication of these *** demonstrate that those devices could be effectively realized by simplified materials with Fabry-Pérot resonances (FPs) at discrete ***,we propose a reduced version of simplified materials with FPs to construct a concentrator and a rotator,which is feasible in experimental *** simulations of total scattering cross-sections confirm their functionalities.

关键词： transformation optics optical nihility media Fabry-Perot resonances

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Longitudinal genetic analysis of growth-related traits in red swamp crayfish Procambarus clarkii (Girard)

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Journal of Oceanology and Limnology 2022年第2期40卷 775-785页

作者： Hui WANG Yi ZHANG Guoliang CHANG nan wu Zhiqiang XU Jianqing TANG Jiangsu Engineering Laboratory for Breeding of Special Aquatic Organisms Life Science School of Huaiyin Normal UniversityHuai’an 223300China Jiangsu Freshwater Fisheries Research Institute Nanjing 210017China

The red swamp crayfish,Procambarus clarkii,is an economically important species especially in *** exoskeleton places serious constraints on growth and culture *** growth is achieved through intermittent molting/*** longitudinal genetic dynamics for growth-related traits at different ecdysial points in *** has been unclear to *** this study,conditional genetic analysis was carried out for growth-related traits(body weight,body length,chela length,and cephalothorax length)based upon a mixed genetic model with conditional additive,dominance,and genotype by environment effects in ***.A complete diallel cross was made among three geographic populations of *** for the genetic mating *** of the conditional genetic analysis showed that from 4 th molt to 9 th molt the conditional additive variations were increased significantly whereas the conditional non-additive genetic variations(dominance and genotype by environment interaction)were decreased significantly for these growth-related *** indicated that lots of new expression of additive effect genes for body weight,body length,chela length,and cephalothorax length occurred during ontogeny,and environment played a signifi cant role in the expression of genes affecting these growth-related *** of the four traits was mainly affected by non-additive genetic effects in early developmental stage(prior to 4 th molt).The cumulative conditional additive variation for the growth-related traits from 4 th molt to 9 th molt accounted for a large majority of the total conditional additive variations from 2 nd molt to 9 th molt,indicating that this period was very important for the growth of this *** the conditional analysis method,dynamics of growth-related traits during an important ontogenetic phase of red swamp crayfish was *** results provide valuable insights into refining production of this species.

关键词： mating design conditional genetic analysis model Procambarus clarkii genetic effect conditional variance component longitudinal genetic analysis

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Degradation significantly decreased the ecosystem multifunctionality of three alpine grasslands: evidences from a large-scale survey on the Qinghai-Tibetan Plateau

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Journal of Mountain Science 2021年第2期18卷 357-366页

作者： XU Yu-dan DONG Shi-kui SHEN Hao XIAO Jian-nan LI Shuai GAO Xiao-xia wu Sheng-nan School of Environment Beijing Normal UniversityBeijing 100875China School of Grassland Science Beijing Forestry UniversityBeijing 100083China College of Resources and Environment Shanxi Agricultural UniversityJinzhong 030801China

Owing to the joint effects of ecosystem fragility,anthropogenic disturbance and climate change,alpine grasslands(alpine meadow,alpine steppe and alpine desert)have experienced serious degradation during the past several *** degradation has severely affected the delivery of ecosystem multifunctionality(EMF)and services,and then threatens the livelihood of local herdsmen and ecological security of ***,we still lack comprehensive insights about the effects of degradation and climatic factors on EMF of alpine grasslands,especially for alpine desert ***,we applied a large-scale field investigation to answer this *** results suggested grassland degradation significantly decreased the belowground ecosystem multifunctionality(BEMF)and EMF of alpine grasslands and aboveground ecosystem multifunctionality(AEMF)of alpine meadow,while did not reduce the AEMF of alpine steppe and *** for the insignificant difference between degraded steppe and degraded desert in AEMF,the alpine meadow showed the highest AEMF,BEMF and EMF,alpine steppe ranked the second and alpine desert was the ***,BEMF and EMF of health alpine grasslands were strongly affected by mean annual precipitation(MAP)(19%-51%)and mean annual temperature(MAT)(9%-36%),while those of degraded meadow and degraded desert were not impacted by precipitation and *** and BEMF showed a synergistic relationship in healthy alpine grasslands(12%-28%),but not in degraded *** findings emphasized the urgency of implementing the feasible ecological restoration project to mitigate the negative influences of grassland degradation on EMF of alpine ecosystems.

关键词： Climatic factors Ecosystem multifunctionality Grassland degradation Grassland type Plant community Soil nutrient

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Chinese public participation monitoring and warning system for geological hazards

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Journal of Mountain Science 2020年第7期17卷 1553-1564页

作者： wu Sheng-nan LEI Yu CUI Peng CHEN Rong YIN Pi-hua Key Laboratory of Land Surface Pattern and Simulation Institute of Geographical Sciences and Natural Resources ResearchChinese Academy of SciencesBeijing10010China Key Laboratory of Mountain Hazards and Earth Surface Processes Institute of Mountain Hazards and EnvironmentChinese Academy of SciencesChengdu610041China University of Chinese Academy of Sciences Beijing100049China CAS Center for Excellence in Tibetan Plateau Earth Sciences Beijing100101China Liangshan Prefecture Geological Environmental Center Liangshan615000China Key Laboratory of Environmental Change and Natural Disaster Ministry of EducationBeijing Normal UniversityBeijing100875China Faculty of Geographical Science Academy of Disaster Reduction and Emergency ManagementBeijing Normal UniversityBeijing100875China

In China,many geological hazards occurred in remote mountainous regions,and it was time-consuming to disseminate disaster information for the responsible parties to make timely ***,only relying on professionals to monitor and manage disasters was demanding and *** Chinese government created a system to engage residents in the process of disaster risk management,namely’Public Participation Monitoring and Warning’(PPMW),to disseminate timely disaster information and bring down management *** objective of this system was to reduce casualties with minimum cost by organizing residents to evacuate from disasters in *** paper introduced the PPMW system,including its structure,operation mechanism by reviewing government documents and research articles,and its implementation by a case study of a landslide at Boli village(E 101°01’,N 27°29’),Yanyuan County,Sichuan Province,China on July 19th ***,this paper analyzed the strengths and limitations of the system and discussed its future *** had the potential to become an affordable disaster risk management tool for other countries facing similar situations to China.

关键词： Geological hazard Monitoring and early warning Disaster risk management Public participation Affordable solution

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Combination of Quercetin, Hirudin and Cinnamaldehyde Promotes Schwann Cell Differentiation and Myelination against High Glucose by Inhibiting ERK Signaling Pathway

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Chinese Journal of Integrative Medicine 2020年第8期26卷 591-598页

作者： LIU Di LIANG Xiao-chun SUN Ying wu Ya-nan ZHANG Hong Department of Traditional Chinese Medicine Peking Union Medical College HospitalPeking Union Medical College and Chinese Academy of Medical SciencesBeijing 100730China Department of Cell Resource Center Institute of Basic Medical SciencePeking Union Medical College and Chinese Academy of Medical SciencesBeijing 100730China the Department of Nephrology Dongzhimen HospitalBeijing University of Chinese MedicineBeijing 100700China

Objective:To investigate the therapeutic and synergistic effects of QHC(combination of quercetin(Q),hirudin(H)and cinnamaldehyd(C))on Schwann cell differentiation and myelination against high glucose(HG)induced ***:Primary-culture Schwann cells exposed to HG(50 mmol/L)for 72 h and Schwann cell–dorsal root ganglion(DRG)neuron cocultures exposed to HG(50 mmol/L)for 7 days were employed as in vitro model of diabetic *** cells were randomly divided into 10 groups:control(CON,25 mmol/L glucose),HG(50 mmol/L glucose),HG plus 10μmol/L quercetin(Q),HG plus 0.04 IU/mL hirudin(H),HG plus 100 nmol/L cinnamaldehyd(C),HG plus 10μmol/L quercetin and 0.04 IU/mL hirudin(QH),HG plus 10μmol/L quercetin and 50 nmol/L cinnamaldehyd(QC),HG plus 0.04 IU/mL hirudin and 50 nmol/L cinnamaldehyd(HC),HG plus 10μmol/L quercetin,0.04 IU/mL hirudin and 50 nmol/L cinnamaldehyd(QHC)or 10μmol/L *** differentiation was evaluated by periaxin immunofluorescence *** protein expression levels of myelin protein zero(P0),myelin basic protein(MBP),myelin-associated glycoprotein(MAG),extracellular signal-regulated kinase(ERK),p-ERK,p-c-Jun,c-Jun,notch intracellular domain(NICD)and the mRNA expression levels of P0,MBP,MAG,Krox-20,Notch1 and Jagged1 were detected by Western blotting and real-time quantitative PCR *** secretion of ciliary neurotrophic factor(CNTF)was determined by enzyme-linked immunosorbent assay(ELISA).The number and length of the myelin segments were evaluated by MBP immunofluorescence *** expression and the location of p-ERK in cocultures were detected by MAG and p-ERK immunofluorescence double ***:Co-treatment with Q,C,H and their combination promoted Schwann cell differentiation,increased CNTF secretion,up-regulated the protein and m RNA expressions of myelin,and increased the number and length of the myelin segments(P<0.01 or P<0.05).In particular,the combination therapy of Q,H and C was superior to the respective mono

关键词： diabetic peripheral neuropathy extracellular signal-regulated kinase pathway Schwann cells myelination Chinese medicine synergistic effect

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