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127篇 您的检索式:作者名="HE JianFeng"
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1Isolation and initial characterization of GW5, a major QTL associated with rice grain width and weight显示文摘谷物重量是庄稼谷物产量的一个主要决定因素并且被自然地发生的量的特点 loci (QTL ) 控制。我们更早识别了控制米饭谷物宽度和重量的主要 QTL, GW5,它在米饭染色体 5 上被印射到一个再结合热点。获得 GW5 怎么控制米饭谷物宽度的更好的理解,我们进行了这个地点的好印射并且揭开在米饭栽培变种 Asominori 与增加的谷物宽度联系的 1 212-bp 删除,与苗条谷物米饭 IR24 比较。另外, 46 米饭栽培变种的 genotyping 分析表明这删除高度与谷物宽度显型被相关,建议 GW5 删除可能在米饭驯服期间被选择了。GW5 编码对原子核局部性的 144 氨基酸的新奇原子蛋白质。而且,我们证明 GW5 身体上在酵母与 polyubiquitin 交往二混血儿的试金。一起,我们的结果建议 GW5 代表主要 QTL 内在的米饭宽度和重量,并且它多半在 ubiquitin-proteasome 小径行动在种子开发期间调整房间分割。这研究提供新奇卓见进控制米饭谷物开发的分子的机制并且建议 GW5 能为庄稼的产量很高的繁殖用作一个潜在的工具。Jianfeng Weng Suhai Gu Xiangyuan Wan He Gao Tao Guo Ning Su Cailin Lei Xin Zhang Zhijun Cheng Xiuping Guo Jiulin Wang Ling Jiang Huqu Zhai Jianmin Wan 2008Cell Research2008,18,12:248
2Mlkl knockout mice demonstrate the indispensable role of Mlkl in necroptosis显示文摘像域的蛋白质(Mlkl ) 最近被发现与受体交往交往的混合的系 kinase 蛋白质 3 (Rip3 ) 并且导致的坏死因素(TNF ) 在有教养的房间线规划了坏死(necroptosis ) 为肿瘤必要。我们由抄写产生了 Mlkl 缺乏的老鼠像使活跃之物的受动器核酸酶(TALEN ) 调停了基因混乱和发现 Mlkl 到为象有免疫力的房间开发一样的正常老鼠开发非必需。胚胎的成纤维细胞(MEF ) 和巨噬细胞两个都显示出的 Mlkl 缺乏的老鼠抵抗到坏死然而并非 apoptotic 刺激。Mlkl 缺乏的 MEF 和巨噬细胞与处于他们激活 NF-κ 的能力的野类型的房间难区分;响应 TNF 和 lipopolysaccharides (LPS ) 的 B,英皇家空军之阶级最低之兵, JNK,和 p38 分别地。一致地, Mlkl 缺乏的巨噬细胞和老鼠展出了正常 interleukin-1β(IL-1β) ,在 LPS 处理以后的 IL-6,和 TNF 生产。Mlkl 缺乏保护老鼠免受导致天蓝色的尖锐胰腺炎的伤害,坏死相关的疾病,但是没在 polymicrobial 上有效果腐败导致吃惊的动物死亡。我们的结果在 necroptosis 为 Mlkl 的角色提供基因证据。Jianfeng Wu Zhe Huang Junming Ren Zhirong Zhang Peng He Yangxin Li Jianhui Ma Wanze Chen Yingying Zhang Xiaojuan Zhou Zhentao Yang Su-Qin Wu Lanfen Chen Jiahuai Han 2013Cell Research2013,23,8:35
3Impact of urban expansion on meteorological observation data and overestimation to regional air temperature in China显示文摘自从改革的实现并且在 1970 年代末在中国开创政策,一些气象学的车站由于城市的扩大消极地进入了城市。在在车站附近的表面和开发环境的变化影响了空气温度的观察。当来自城市的车站的观察数据在公民或地区性的规模空气温度数据集的插值被使用时,他们能导致地区性的空气温度的 overestimation 和对温暖的不精密的评价。在这研究,越过中国包围 756 个气象学的车站的内在的表面在很多时间间隔上基于遥感图象被识别区分进入了城市的农村车站。在把观察数据从被城市的扩大影响了的这些车站移开以后,然后,背景空气温度的数据集被插入内推产生从仍然保持农村的观察数据驻扎。吝啬的城市的热岛效果紧张自从 1970 被从城市的车站把原来的观察记录与背景空气作比较估计,温度插入内推。结果证明那城市的热岛效果确实由于城市的扩大发生,与在比在另外的季节的冬季的更高的紧张。然后,地区性的空气温度的 overestimation 被比较分别地由所有车站和农村车站被插入内推的空气温度的二种格子数据集评估观察数据。空间地, overestimation 比在中国的中央部分在东方中国是相对更高的;然而,两个区域比的展出高得多的效果在西方的中国被观察。我们在最后 40 年里结束了那在中国的温度增加了大约 1.58 的平均数,降水,浅地面温度和 NDVI,哪个 3 吗??SHAO Quanqin SUN Chaoyang LIU Jiyuan HE Jianfeng KUANG wenhui TAO Fulu 2011Journal of Geographical Sciences2011,21,6:10
4Olivine-norite rock detected by the lunar rover Yutu-2 likely crystallized from the SPA-impact melt pool显示文摘Chang’E-4 landed in the South Pole-Aitken(SPA)basin,providing a unique chance to probe the composition of the lunar interior.Its landing site is located on ejecta strips in Von Karm´an crater that´possibly originate from the neighboring Finsen crater.A surface rock and the lunar regolith at 10 sites along the rover Yutu-2 track were measured by the onboard Visible and Near-Infrared Imaging Spectrometer in the first three lunar days of mission operations.In situ spectra of the regolith have peak band positions at 1 and 2μm,similar to the spectral data of Finsen ejecta from the Moon Mineralogy Mapper,which confirms that the regolith’s composition of the landing area is mostly similar to that of Finsen ejecta.The rock spectrum shows similar band peak positions,but stronger absorptions,suggesting relatively fresh exposure.The rock may consist of 38.1±5.4%low-Ca pyroxene,13.9±5.1%olivine and 48.0±3.1%plagioclase,referred to as olivine-norite.The plagioclase-abundant and olivine-poor modal composition of the rock is inconsistent with the origin of the mantle,but representative of the lunar lower crust.Alternatively,the rock crystallized from the impact-derived melt pool formed by the SPA-impact event via mixing the lunar crust and mantle materials.This scenario is consistent with fast-cooling thermal conditions of a shallow melt pool,indicated by the fine to medium-sized texture(<3 mm)of the rock and the SPA-impact melting model[Icarus 2012;220:730–43].Honglei Lin Zhiping He Wei Yang Yangting Lin Rui Xu Chi Zhang Meng-Hua Zhu Rui Chang Jinhai Zhang Chunlai Li Hongyu Lin Yang Liu Sheng Gou Yong Wei Sen Hu Changbin Xue Jianfeng Yang Jie Zhong Xiaohui Fu Weixing Wan Yongliao Zou 2020National Science Review2020,7,5:9
5Physiological effects of weightlessness: countermeasure system development for a long-term Chinese manned spaceflight显示文摘The Chinese space station will be built around 2020. As a national space laboratory, it will offer unique opportunities for studying the physiological effects of weightlessness and the efficacy of the countermeasures against such effects. In this paper, we described the development of countermeasure systems in the Chinese space program. To emphasize the need of the Chinese space program to implement its own program for developing countermeasures, we reviewed the literature on the negative physiological effects of weightlessness, the challenges of completing missions, the development of countermeasure devices, the establishment of countermeasure programs, and the efficacy of the countermeasure techniques in American and Russian manned spaceflights. In addition, a brief overview was provided on the Chinese research and development on countermeasures to discuss the current status and goals of the development of countermeasures against physiological problems associated with weightlessness.Linjie Wang Zhili Li Cheng Tan Shujuan Liu Jianfeng Zhang Siyang He Peng Zou Weibo Liu Yinghui Li 2019Frontiers of Medicine2019,13,2:9
6Developing Agroforestry in Slopelands to Combat Non-point Pollution in China显示文摘The status of agricultural non-point source (NPS) pollution in China is quite austere owing to lots of factors, the characteristics of which include severe N, P eutrophications in water bodies, unsuitable structure of agriculture and the lack of reasonable management. It was well known that forest could play an important role to control soil & water erosion, uptake extra soil nutrients as well. However forest coverage is rather low in the headwaters region. The research on the causes of NSP pollution and the significance by developing agroforestry to deal with the problem is presented in the paper, as well as the function of agroforestry and the related measures of pollution controlling, e.g., riparian forest buffer zones building. As a conclusion, controlling the loss of soil and water is regarded as an important crucial action and major research direction in the field. Thereby the benefits of pushing up agroforestry in slops to combat water eutrophication and prevent NSP pollution from worsening are significant.ZHANG Jianfeng FANG Minyu LI Sheng HE Binghui LIU Guangyan 2007Chinese Forestry Science and Technology2007,6,4:8
7RNA-binding protein LIN28B inhibits apoptosis through regulation of the AKT2/FOXO3A/BIM axis in ovarian cancer cells显示文摘LIN28B is an evolutionarily conserved RNA-binding protein that regulates mRNA translation and miRNA let-7 maturation in embryonic stem cells and developing tissues.Increasing evidence demonstrates that LIN28B is activated in cancer and serves as a critical oncogene.However,the underlying molecular mechanisms of LIN28B function in tumorigenesis are still largely unknown.Here we report that LIN28B was expressed in over half of the patients with epithelial ovarian cancer who were examined(n=584).Functional experiments demonstrated that LIN28B inhibited ovarian cancer cell apoptosis.Furthermore,we showed that the proapoptotic factor BIM played an essential role in the antiapoptotic function of LIN28B.RNA-IP microarray analysis suggested that LIN28B binds to mRNAs that are associated with the DNA damage pathway,such as AKT2,in ovarian cancer cells.By binding to AKT2 mRNA and enhancing its protein expression,LIN28B regulated FOXO3A protein phosphorylation and decreased the transcriptional level of BIM,which antagonized the antiapoptosis activity of LIN28B.Taken together,these results mechanistically linked LIN28B and the AKT2/FOXO3A/BIM axis to the apoptosis pathway.The findings may have important implications in the diagnosis and therapeutics of ovarian cancer.Xiaojuan Lin Jianfeng Shen Dan Peng Xinhong He Congjian Xu Xiaojun Chen Janos LTanyi Kathleen Montone Yi Fan Qihong Huang Lin Zhang Xiaomin Zhong 2018Signal Transduction and Targeted Therapy2018,3,1:8
8Abundance and biomass of heterotrophic microbes in the Kongsfjorden, Svalbard显示文摘Abundance and biomass of heterotrophic microbes were investigated using epifluorescense microscopy in August 2004 along a transect in the Kongsfjorden, a glacial fjord in the high arctic, located in the north-western part of Svalbard. A bacterial abundance was low at outer fjord stations (on average 2.29×108 ind./dm3) and was higher at inner fjord stations (on average 3.52×108 ind./dm3).The biomass of bacteria ranged from 3.69 to 8.01 mg/m3.The abundance of bacteria was low at the surface of water(0 m), whereas the higher abundances often occurred at depths of 30~50 m.The abundance of heterotrophic flagellates varied from 2.785 to 8.891×104 ind./dm3.The assemblage was numerically dominated by less than 5 μm heterotrophic flagellates (78.67%~94.80%).The biomass of heterotrophic flagellates varied from 0.37 to 2.30 mg/m3.The mean biomass distribution for all stations was 4.91% for less than 5 μm heterotrophic flagellates, 86.74% for 6~20 μm flagellates and 8.35% for greater than 20 μm sized flagellates.The low biomass of heterotrophic flagellates often occurred at the surface of water(0 m),while the maximum value of biomass occurred at different depths. The biomass of total heterotrophic microbial community ranged from 4.20 to 10.03 mg/m3.The mean biomass distribution for all stations was 82.58% for bacteria, 15.77% for flagellates and 1.66% for ciliates.JIANG Xiaodong HE Jianfeng CAI Minghong 2005Acta Oceanologica Sinica2005,24,6:6
9Dark matter direct search sensitivity of the PandaX-4T experiment显示文摘The Panda X-4T experiment, a 4-ton scale dark matter direct detection experiment, is being planned at the China Jinping Underground Laboratory. In this paper we present a simulation study of the expected background in this experiment. In a 2.8-ton fiducial mass and the signal region between 1-10 keV electron equivalent energy, the total electron recoil background is found to be 4.9 × 10^(-5) kg^(-1) d^(-1) keV^(-1). The nuclear recoil background in the same region is 2.8 × 10^(-7) kg^(-1) d^(-1) keV^(-1). With an exposure of 5.6 ton-years, the sensitivity of Panda X-4 T could reach a minimum spin-independent dark matter-nucleon cross section of 6 × 10^(-48) cm^2 at a dark matter mass of 40 Ge V/c^2.HongGuang Zhang Abdusalam Abdukerim Wei Chen Xun Chen YunHua Chen XiangYi Cui BinBin Dong DeQing Fang ChangBo Fu Karl Giboni Franco Giuliani LinHui Gu XuYuan Guo ZhiFan Guo Ke Han ChangDa He ShengMing He Di Huang XingTao Huang Zhou Huang Peng Ji XiangDong Ji YongLin Ju ShaoLi Li Yao Li Heng Lin HuaXuan Liu JiangLai Liu YuGang Ma YaJun Mao KaiXiang Ni JinHua Ning XiangXiang Ren Fang Shi AnDi Tan AnQing Wang Cheng Wang HongWei Wang Meng Wang QiuHong Wang SiGuang Wang XiuLi Wang XuMing Wang Zhou Wang MengMeng Wu ShiYong Wu JingKai Xia MengJiao Xiao PengWei Xie BinBin Yan JiJun Yang Yong Yang ChunXu Yu JuMin Yuan JianFeng Yue Dan Zhang Tao Zhang Li Zhao QiBin Zheng JiFang Zhou Ning Zhou XiaoPeng Zhou 2019Science China(Physics,Mechanics & Astronomy)2019,62,3:6
10Fouling community characteristics in subtropical coastal waters of the southwestern East China Sea显示文摘A fouling study was conducted in coastal waters southwest of the East China Sea between December 2013 and November 2014. A total of 84 species of fouling organisms belonging to 69 genera, 49 families, and 10 phyla were recorded over the entire year. The community composition was dominated by coastal warm-water species belonging to typical subtropical inner bay communities. The prosperous stage of settlement lasted from April to September, and the adhesion strength of the fouling organisms was the highest in summer. Sessile suspension feeders constituted the main core of settlement for the fouling community. Amphibalanus reticulatus was the most dominant and representative species of fouling organism, and other dominant species included Caprella equilibra, Ectopleura crocea, Anthopleura nigrescens, Stylochus ijimai, Spirobranchus kraussii, Crassostrea angulata, Perna viridis, Jassa falcata, Stenothoe valida, Sphaerozius nitidus, and Biflustra grandicella. The individuals in the fouling community showed a mutual dependence or constraint relationship due to competition for settlement space and food, and they exhibited a particular spatiotemporal distribution in accordance with adaptation to environmental factors. Temperature was the most important environmental factor determining the geographic distribution of fouling organisms. The temperature characteristics of species essentially reflect the differences in the fouling community composition in various climate zones. The species number, settlement stage, and settlement rate of fouling organisms are closely related to water temperature. Local natural environmental conditions(salinity, water currents, light, etc.) as well as human activity(such as aquaculture production) are all important factors affecting the settlement of fouling organisms.LIN Heshan WANG Jianjun LIU Wei LIU Kun ZHANG Shuyi HE Xuebao HUANG Yaqin LIN Junhui MOU Jianfeng ZHENG Chengxing YAN Tao 2017Acta Oceanologica Sinica2017,36,10:6
11Germination and early seedling growth of Pinus densata Mast.provenances显示文摘We studied seed germination and early seedling growth of Pinus densata to explore the range of variability within the species and to inform afforestation practices.Phenotypes were evaluated at a forest tree nursery under conditions that support Pinus yunnanensis, one of the presumed parental species of P. densata. Seeds were collected from 20 open-pollinated trees within each of eight autochthonous populations representing the natural distribution of P. densata in China to assess variation in germination traits and early seedling growth, and to examine the relationships among these traits. Results showed that seeds from all populations germinated and seedlings established successfully. There were significant differences among populations in 13 of 14 traits evaluated. Seed germination and early seedling growth were strongly related to seed size and seed weight. Bigger seeds germinated earlier and faster than small seeds, and seedling size was positively correlated with seed size. Some germination traits were strongly and significantly correlated with climatic variables associated with the provenance of the studied populations. Based on these observations, we conclude there were large, significant, and biologically important differences among P. densata populations in seed germination and seedling growth traits. The observed variability probably reflects a high degree of adaptive differentiation among populations that is likely to be relevant for future afforestation.Yulan Xu Nianhui Cai Bin He Ruili Zhang Wei Zhao Jianfeng Mao Anan Duan Yue Li Keith Woeste 2016Journal of Forestry Research2016,27,2:5
12Integrated genomic analysis identifies deregulated JAK/STAT-MYC-biosynthesis axis in aggressive NK-cell leukemia显示文摘好攻击的 NK 房间白血病(ANKL ) 是在从亚洲的人之中是更流行的 NK 房间瘤的一种稀罕形式并且中央并且南美洲。病人们通常在天以内死到月,甚至在收到迅速的治疗学的管理以后。这里,我们由集成整个染色体执行了 ANKL 的第一全面研究, transcriptome 并且定序指向,象功能的试金一样的 cytokine 数组。在 JAK-STAT 小径的变化在 48% 被识别(14/29 ) ANKL 病人,当细胞外的 STAT3 激发器 IL10 被 56 褶层的一般水准提高时(P < 0.0001 ) 在检查的所有病人的血浆。另外的经常变异的基因包括的 TP53 (34%) , TET2 (28%) , CREBBP (21%) 和 MLL2 (21%) 。耐心的 NK 白血病房间在多重新陈代谢的小径显示出 STAT3 phosphorylation, MYC 表示和 transcriptional 活动的突出的激活。机能上地, STAT3 激活和 MYC 表示为 ANKL 房间的增长和幸存是批评的。发信号的 STAT 调整了发信号的 MYC 抄写节目,和两 STAT, MYC 抄写被要求维持核苷酸合成和 glycolysis 的激活。一起, JAK-STAT 小径在 ANKL 为 genomic 改变和 IL10 刺激代表一个主要目标。这最新发现的 JAK/STAT-MYC-biosynthesis 轴可以在对待白血病的这种子类型为新奇治疗学的策略的发展提供机会。Liang Huang Dan Liu Na Wang Shaoping Ling Yuting Tang Jun Wu Lingtong Hao Hui Luo Xuelian Hu Lingshuang Sheng Lijun Zhu Di Wang Yi Luo Zhen Shang Min Xiao Xia Mao Kuangguo Zhou Lihua Cao Lili Dong Xinchang Zheng Pinpin Sui Jianlin He Shanlan Mo Jin Yan Qilin Ao Lugui Qiu Hongsheng Zhou Qifa Liu Hongyu Zhang Jianyong Li Jie Jin Li Fu Weili Zhao Jieping Chen Xin Du Guoliang Qing Hudan Liu Xin Liu Gang Huang Ding Ma Jianfeng Zhou Qian-fei Wang 2018Cell Research2018,28,2:5
13In-situ optimizing the valence configuration of vanadium sites in NiV-LDH nanosheet arrays for enhanced hydrogen evolution reaction显示文摘Developing the highly active, cost-effective, environmental-friendly, and ultra-stable nonprecious electrocatalysts for hydrogen evolution reaction(HER) is distinctly indispensable for the large-scale practical applications of hydrolytic hydrogen production. Herein, we report the synthesis of well-integrated electrode, NiV layered double hydroxide nanosheet array grown in-situ on porous nickel foam(abbreviated as in-NiV-LDH/NF) via the facile one-step hydrothermal route. Interestingly, the valence configuration of vanadium(V) sites in such NiV-LDH are well dominated by the innovative use of NF as the reducing regulator, achieving the reassembled in-NiV-LDH/NF with a high proportion of trivalent V ions(V3+), and then an enhanced intrinsic electrocatalytic HER activity. The HER testing results show that the in-NiVLDH/NF drives the current densities of 10 and 100 mA cm-2 at extremely low overpotentials of 114 and 245 mV without iR-compensation respectively, even outperforms commercial 20 wt% Pt/C at the large current density of over 80 mA cm-2 in alkaline media, as well as gives robust catalytic durability of at least 100 h in both alkaline and neutral media. More importantly, this work provides a fresh perspective for designing bimetal(oxy) hydroxides electrocatalysts with efficient hydrogen generation.Danyang He Liyun Cao Jianfeng Huang Koji Kajiyoshi Jianpeng Wu Changcong Wang Qianqian Liu Dan Yang Liangliang Feng 2020Journal of Energy Chemistry2020,29,8:5
14Photodeposition fabrication of hierarchical layered Co-doped Ni oxyhydroxide(NixCo1−xOOH)catalysts with enhanced electrocatalytic performance for oxygen evolution reaction显示文摘Highly active,durable and inexpensive oxygen evolution reaction(OER)catalysts are crucial for achieving practical and high-efficiency water splitting.Herein,hierarchical interconnected NixCo1−xOOH nanosheet arrays supported on TiO2/Ti substrate have been fabricated through a facile photodeposition method.Compared with pristine NiOOH,the obtained NixCo1−xOOH nanosheet arrays possess larger exposed electrochemical active surface area,faster transfer and collection of electrons and stronger electronic interaction,showing a low overpotential of 350 mV at a current density of 10 mA·cm−2 and a small Tafel slope of 41 mV·dec−1 in basic solutions,with the OER performance superior to pristine NiOOH and most Ni-based catalysts.Furthermore,the NixCo1−xOOH electrode demonstrates excellent stability at the current density of 10 mA·cm−2 for 24 hours,which is attributed to the structural maintenance caused by the good adhesion of the catalyst and the substrate.Our study provides an alternative approach for the rational design of highly active and promising OER electrocatalysts.Liang-ai Huang Zhishun He Jianfeng Guo Shi-en Pei Haibo Shao Jianming Wang 2020Nano Research2020,13,1:5
15Adaptive Cascaded High-Resolution Source Localization Based on Collaboration of Multi-UAVs显示文摘Effective information fusion is very important in hybrid source localization. In this paper, the performance analysis of conventional joint direction of arrival(DOA) and time difference of arrival(TDOA) system is derived and it is shown that this hybrid system may inferior to the single system when the ratio of angular measurements error to distance measurements error exceeds a threshold. To avoid this problem, an effective DOA/TDOA adaptive cascaded(DTAC) technique is presented. The rotation feature of UAVs and spatial filtering technique are applied to gain the signal-to-noise ratio(SNR), which leads to more accurate estimation of time delay by using DOAs. Nevertheless, the time delay estimation precision is still limited by the sampling frequency, which is constrained by the finite load of UAV. To break through the limitation, an enhanced self-delay-compensation(SDC) method is proposed, which aims at detecting the overlooked time delay within the sampling interval by adding a tiny time delay. Finally, the position of the source is estimated by the Chan algorithm. Compared to DOA-only algorithm, TDOA-only algorithm and joint DOA/TDOA(JDT) algorithm, the proposed method shows better localization accuracy regardless of different SNRs and sampling frequencies. Numerical simulations are presented to validate the effectiveness and robustness of the proposed algorithm.Yi He Jianfeng Li Xiaofei Zhang 2020China Communications2020,17,4:4
16Factors dominating bacterioplankton abundance and production in the Nordic seas and the Chukchi Sea in summer 2012显示文摘Abundance and production of bacterioplankton were measured in the Nordic seas and Chukchi Sea during the5 th Chinese Arctic Research Expedition in summer 2012.The results showed that average bacterial abundances ranged from 3.31×10^(11) cells/m^3 to 2.25× 10^(11)cells/m^3,and average bacterial productions(calculated by carbon)were 0.46 mg/(m^3·d) and 0.54 mg/(m^3·d) in the Nordic seas and Chukchi Sea,respectively.T-test result showed that bacterial abundances were significantly different between the Nordic seas and Chukchi Sea,however,no significant difference was observed regarding bacterial productions.Based on the slope of lg bacterial biomass versus lg bacterial production,bacterial communities in the Nordic seas and Chukchi Sea were moderately dominated by bottom-up control.Both Pearson correlation analysis and multivariable linear regression indicated that temperature had significant positive correlation with bacterial abundance in the Chukchi Sea,while no correlations with productions in both areas.Meanwhile,Chl a had positive correlations with both bacterial abundance and production in these two regions.As the temperature and Chl a keep changing in the future,we suggest that both bacterial abundance and production been hanced in the Chukchi Sea but weaken in the Nordic seas,though the enhancement will not be dramatic as a result of higher pressure of predation and viral lysis.GAO Yuan HE Jianfeng CHEN Min LIN Ling ZHANG Fang 2017Acta Oceanologica Sinica2017,36,8:4
17Urbanization Impact on Regional Climate and Extreme Weather:Current Understanding,Uncertainties,and Future Research Directions显示文摘Urban environments lie at the confluence of social,cultural,and economic activities and have unique biophysical characteristics due to continued infrastructure development that generally replaces natural landscapes with built-up structures.The vast majority of studies on urban perturbation of local weather and climate have been centered on the urban heat island(UHI)effect,referring to the higher temperature in cities compared to their natural surroundings.Besides the UHI effect and heat waves,urbanization also impacts atmospheric moisture,wind,boundary layer structure,cloud formation,dispersion of air pollutants,precipitation,and storms.In this review article,we first introduce the datasets and methods used in studying urban areas and their impacts through both observation and modeling and then summarize the scientific insights on the impact of urbanization on various aspects of regional climate and extreme weather based on more than 500 studies.We also highlight the major research gaps and challenges in our understanding of the impacts of urbanization and provide our perspective and recommendations for future research priorities and directions.Yun QIAN TC CHAKRABORTY Jianfeng LI Dan LI Cenlin HE Chandan SARANGI Fei CHEN Xuchao YANG L.Ruby LEUNG 2022Advances in Atmospheric Sciences2022,39,6:3
18Spatial heterogeneity of a microbial community in Kongsfjorden,Svalbard during late summer 2006 and its relationship to biotic and abiotic factors显示文摘The 16S and 18S ribosomal ribonucleic acid genes of microbial organisms collected from the contrasting environments (temperature,salinity,silicate,phosphate and nitrate,p <0.05) of the inner and outer basins of Kongsfjorden (Spitsbergen,Arctic) were studied using polymerase chain reaction-denaturing gradient gel electrophoresis(DGGE) fingerprinting.Comparison of the microbial fingerprints and the physicochemical parameters revealed that molecular methodology exhibited a greater sensitivity.Sequences obtained from bacterial DGGE were affiliated with four main phylogenetic groups of bacteria:Proteobacteria(Alpha,Beta and Gamma),Bacteroidetes,Verrucomicrobia and Cyanobacteria.The relationships between the genotype distribution of these microbes and associated biotic/abiotic factors,revealed by canonical correspondence analysis,showed that Station 1 at 30 m (outer fjord) was grouped separately from the other sites.This difference could be a consequence of the thermocline and base of the euphotic layer at this depth where the Atlantic and Arctic-type waters overlapped.GUO ChaoYing HE JianFeng ZHANG Fang CAI MingHong WANG GuiZhong 2011Chinese Journal of Polar Science2011,22,1:3
19An ecological survey of the abundance and diversity of benthic macrofauna in Indonesian multispecific seagrass beds显示文摘Seagrasses are one of the most productive ecosystems in coastal areas and support a wide variety of associated fauna. The tropical Indo-Pacific region is considered to have the highest diversity of seagrass plant species and the largest distribution areas of seagrass, yet the seagrass macrofauna in this region are poorly understood. To help fill this gap in our knowledge, an ecological survey was conducted to describe the abundance and diversity of benthic macrofauna from tropical seagrass beds and to determine between-station variations within a transect and between-site variations in macrofaunal abundance, taxa richness and community structure. Benthic macrofaunal samples associated with seagrass beds were collected with a core sampler on the east coast of North Sulawesi in May 2014 and on the west coast in October 2015. A total of 149 species from 14 higher taxa was collected. The most species-rich groups were polychaetes(56 species, 26% of total individual numbers), decapods(20 species, 9% of total numbers) and amphipods(18 species, 35% of total numbers). Between-station variations within a transect displayed different patterns between the east coast and the west coast. On the east coast, there were marked variations in abundance between stations within a transect for the macrofauna and amphipod assemblages. Both taxa richness and abundance varied with station for the macrofauna and polychaete assemblages on the west coast, resulting from the heterogeneity of the substrate along a transect. One-way ANOSIM together with MDS ordination indicated that macrofaunal community structure in seagrasses differed significantly between the east coast and the west coast, corresponding with the division of seagrasses into two broad categories of habitats, i.e.,mangrove-seagrass-reef continuum and seagrass-reef continuum. Compared with other studies in tropical areas,the abundance and diversity of benthic macrofauna in the present study were moderate. The reason for the two markedly distinct macrofaunal communities might be attributed to multiple factors, including sediment pattern,seagrass structure and temporal changes.LIN Junhui HUANG Yaqin ARBI Ucu Yanu LIN Heshan AZKAB Muhammad Husni WANG Jianjun HE Xuebao MOU Jianfeng LIU Kun ZHANG Shuyi 2018Acta Oceanologica Sinica2018,37,6:3
20Multi-proxy evidence for Late Pleistocene-Holocene climatic and environmental changes in Lop-Nur,Xinjiang,Northwest China显示文摘A 10.35-m-long sediment core from the Luobei depression in Lop-Nur,Xinjiang,Northwest China,provides detailed information about environmental changes during the Late Pleistocene.The samples taken every 5 cm of the core were analyzed for 10 environmental proxies,including magnetic susceptibility,granularity,chroma,carbonate and loss on ignition(LOI),and pH value.The chronology data are provided by the uranium/thorium disequi-librium dates.The sediments of the section were deposited during the last 32000 years.The results of analysis of 10 proxies were examined using multivariate statistical analysis,and the principal components were calculated.According to the results,the Late Pleistocene sequence contains four climatic and environmental stages appearing in the cycles of cold-wet and warm-dry changes.During 10-9 ka BP,it was the earliest warm episode in the Holocene.Environmental changes in this district were restricted by global change,as suggested by the analysis of glacial-interglacial cycles.But it was different from the mutative trend of a monsoon region in East China because of its own characteristics,which was the situation of cold-wet and warm-dry climate-environment change.The candidate reason may be the uplift of the Tibet Plateau and the westerly wind circulation.LUO Chao YANG Dong PENG Zicheng ZHANG Zhaofeng LIU Weiguo HE Jianfeng ZHOU Chenlin 2008Chinese Journal Of Geochemistry2008,27,3:3
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