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    题名 作者 年代 出处 被引量
1Second harmonic generation in a high-Q lithium niobate microresonator fabricated by femtosecond laser micromachining显示文摘We report on second harmonic generation(SHG) in on-chip high-Q(>105) lithium niobate(Li Nb O3, LN) microresonators fabricated by femtosecond laser micromachining. We examine the efficiency of SHG with either a continuous-wave(CW) or an ultrashort pulsed pump laser. The normalized conversion efficiencies of SHG obtained with the CW and pulsed pump lasers are measured to be 1.35×10?5 m W?1 and 2.30×10?6 m W?1, respectively.LIN JinTian XU YingXin FANG ZhiWei WANG Min WANG NengWen QIAO LingLing FANG Wei CHENG Ya 2015Science China(Physics,Mechanics & Astronomy)2015,58,11:25
2A High Performance Cobalt-Doped ZnO Visible Light Photocatalyst and Its Photogenerated Charge Transfer Properties显示文摘高度 photocatalytically 活跃的做钴的 ZnO (ZnO : 公司) nanorods 被一个灵巧的热水的过程准备了。X 光检查衍射, X 光检查光电子光谱学,拉曼散布和紫外力的弥漫的反射光谱学证实掺杂物离子代替一些格子锌离子,并且而且,那 Co2+ 和 Co3+ 离子共存。同样准备的 ZnO : 公司样品让扩大轻吸收与纯 ZnO 和显示出的高度有效的 photocatalytic 活动相比变化,仅仅要求 60 min 在可见轻照耀下面分解 93% 茜素红染料(> 420 nm ) 。可见 photocatalytic 活动的 photophysical 机制在表面 photovoltage 光谱学的帮助下被调查。显示的结果在公司和 ZnO 之间的一个强壮的电子相互作用是在场的,并且公司的加入支持了费用分离并且提高了费用转移能力并且同时,有效地在 ZnO 禁止了 photogenerated 费用搬运人的再结合,导致高可见的轻 photocatalytic 活动。Yongchun Lu Yanhong Lin Dejun Wang Lingling Wang Tengfeng Xie Tengfoi Jiang 2011Nano Research2011,4,11:16
3COVID-19 Outbreak Caused by Contaminated Packaging of Imported Cold-Chain Products—Liaoning Province,China,July 2020显示文摘Summary What is known about this topic?Few major outbreaks of coronavirus disease 2019(COVID-19)have occurred in China after major nonpharmaceutical interventions and vaccines have been deployed and implemented.However,sporadic outbreaks that had high possibility to be linked to cold chain products were reported in several cities of China..What is added by this report?In July 2020,a COVID-19 outbreak occurred in Dalian,China.The investigations of this outbreak strongly suggested that the infection source was from COVID-19 virus-contaminated packaging of frozen seafood during inbound unloading personnel contact.What are the implications for public health practice?Virus contaminated paper surfaces could maintain infectivity for at least 17–24 days at-25℃.Exposure to COVID-19 virus-contaminated surfaces is a potential route for introducing the virus to a susceptible population.Countries with no domestic transmission of COVID-19 should consider introducing prevention strategies for both inbound travellers and imported goods.Several measures to prevent the introduction of the virus via cold-chain goods can be implemented.Huilai Ma1 Jianqun Zhang Ji Wang Ying Qin Cao Chen Yang Song Liang Wang Jun Meng Lingling Mao Fengqin Li Ning Li Jian Cai Yong Zhang Dayan Wang Yunting Xia Hong Wang Shaofeng Jiang Xiang Zhao Peihua Niu Wenjie Tan Tao Ma Yecheng Yao Naiying Mao Zhen Zhu Tianjiao Ji Qian Yang Baoying Huang Li Zhao Jianxing Yu Li Bai Shuangli Zhu Dongyan Wang Yan Zhang Yingwei Sun Mingchun Luan Yanhai Wang Haibo Sun Shihong Yang Zhijian Bo Xiang Ren Zhongjie Li George Fu Gao Wei Yao Wenqing Yao Zijian Feng Wenbo Xu 2021China CDC weekly2021,3,21:16
4Pore characterization of different types of coal from coal and gas outburst disaster sites using low temperature nitrogen adsorption approach显示文摘To characterize the pore features of outburst coal samples and investigate whether outburst coal has some unique features or not, one of the authors, working as the member of the State Coal Mine Safety Committee of China, sampled nine outburst coal samples(coal powder and block) from outburst disaster sites in underground coal mines in China, and then analyzed the pore and surface features of these samples using low temperature nitrogen adsorption tests. Test data show that outburst powder and block coal samples have similar properties in both pore size distribution and surface area. With increasing coal rank, the proportion of micropores increases, which results in a higher surface area. The Jiulishan samples are rich in micropores, and other tested samples contain mainly mesopores, macropores and fewer micropores. Both the unclosed hysteresis loop and force closed desorption phenomena are observed in all tested samples. The former can be attributed to the instability of the meniscus condensation in pores,interconnected pore features of coal and the potential existence of ink-bottle pores, and the latter can be attributed to the non-rigid structure of coal and the gas affinity of coal.Qi Lingling Tang Xu Wang Zhaofeng Peng Xinshan 2017International Journal of Mining Science and Technology2017,27,2:15
5Multichannel vectorial holographic display and encryption显示文摘Since its invention,holography has emerged as a powerful tool to fully reconstruct the wavefronts of light including all the fundamental properties(amplitude,phase,polarization,wave vector,and frequency).For exploring the full capability for information storage/display and enhancing the encryption security of metasurface holograms,smart multiplexing techniques together with suitable metasurface designs are highly demanded.Here,we integrate multiple polarization manipulation channels for various spatial phase profiles into a single birefringent vectorial hologram by completely avoiding unwanted cross-talk.Multiple independent target phase profiles with quantified phase relations that can process significantly different information in different polarization states are realized within a single metasurface.For our metasurface holograms,we demonstrate high fidelity,large efficiency,broadband operation,and a total of twelve polarization channels.Such multichannel polarization multiplexing can be used for dynamic vectorial holographic display and can provide triple protection for optical security.The concept is appealing for applications of arbitrary spin to angular momentum conversion and various phase modulation/beam shaping elements.Ruizhe Zhao Basudeb Sain Qunshuo Wei Chengchun Tang Xiaowei Li Thomas Weiss Lingling Huang Yongtian Wang Thomas Zentgraf 2018Light(Science & Applications)2018,7,1:15
6Source of major anions and cations of snowpacks in Hailuogou No.1 glacier, Mt. Gongga and Baishui No.1 glacier, Mt. Yulong显示文摘积雪场样品是从二条冰河的 colleted:在 2006 年 6 月的 Baishui No.1 冰河和 Hailuogou No.1 冰河。海盐离子 tracer。LI Zongxing HE Yuanqing PANG Hongxi YANG Xiaomei JIA Wenxiong ZHANG Ningning WANG Xufeng NING Baoying YUAN Lingling SONG Bo 2008Journal of Geographical Sciences2008,18,1:13
7Chemical screen identifies a geroprotective role of quercetin in premature aging显示文摘Aging increases the risk of various diseases. The main goal of aging research is to find therapies that attenuate aging and alleviate aging-related diseases. In this study, we screened a natural product library for geroprotective compounds using Werner syndrome (WS) human mesenchymal stem cells (hMSCs), a premature aging model that we recently established. Ten candidate compounds were identified and quercetin was investigated in detail due to its leading effects. Mechanistic studies revealed that quercetin alleviated senescence via the enhancement of cell proliferation and restoration of heterochromatin architecture in WS hMSCs. RNA-sequencing analysis revealed the transcriptional commonalities and differences in the geroprotective effects by quercetin and Vitamin C. Besides WS hMSCs, quercetin also attenuated cellular senescence in Hutchinson-Gilford progeria syndrome (HGPS) and physiological-aging hMSCs. Taken together, our study identifies quercetin as a geroprotective agent against accelerated and natural aging in hMSCs, providing a potential therapeutic intervention for treating age-associated disorders.Lingling Geng Zunpeng Liu Weiqi Zhang Wei Li Zeming Wu Wei Wang Ruotong Ren Yao Su Peichang Wang Liang Sun Zhenyu Ju Piu Chan Moshi Song Jing Qu Guang-Hui Liu 2019Protein & Cell2019,10,6:13
8Gene expression signatures for phlegm-dampness constitution of Chinese Medicine显示文摘Dear Editor,The term'individualized medicine'was first used in Biochemistry Individuality in 1956 by Williams(Williams et al.,1956).With the emergence of the post-genome era in the21st century,individualized precision medicine has attracted increasing attention.In traditional Chinese medicine(TCM),there is also concept of individualized medicine,which is known as the Chinese constitutional theory,proposed in the1970s(Wang,2012).According to this theory,theLingru Li Juan Feng Haiqiang Yao Lan Xie Yu Chen Lingling Yang Shujuan Hou Shipeng Zhao Ranran Sun Yanling Wu Tongtong Bai Yingshuai Li Ruoxi Yu Ji Wang Qi Wang 2017Science China(Life Sciences)2017,60,1:13
9Role of BKCa channels in diabetic vascular complications显示文摘Qian Lingling Liu Xiaoyu Wang Ruxing 2014Chinese Medical Journal2014,,9:12
10Low-dose quercetin positively regulates mouse healthspan显示文摘Dear Editor,Aging is the leading risk factor for many chronic diseases,accounting for almost 60%of all deaths worldwide.How to achieve healthy aging,alleviate aging-related diseases,and extend healthspan has become a main topic of biomedical research(He et al.,2019).Geroprotective compounds,such as metformin and rapamycin,have been shown to improve both healthspan and lifespan in mice(Martin-Montalvo et al.,2013;Bitto et al.,2016),whereas nicotinamide partially improves healthspan in mice(Mitchell et al.,2018).Lingling Geng Zunpeng Liu Si Wang Shuhui Sun Shuai Ma Xiaoqian Liu Piu Chan Liang Sun Moshi Song Weiqi Zhang Guang-Hui Liu Jing Qu 2019Protein & Cell2019,10,10:12
11Nitrogen cycle of a typical Suaeda salsa marsh ecosystem in the Yellow River estuary显示文摘The nitrogen(N) biological cycle of the Suaeda salsa marsh ecosystem in the Yellow River estuary was studied during 2008 to 2009.Results showed that soil N had significant seasonal fluctuations and vertical distribution.The N/P ratio(15.73±1.77) of S.salsa was less than 16,indicating that plant growth was limited by both N and P.The N absorption coefficient of S.salsa was very low(0.007),while the N utilization and cycle coefficients were high(0.824 and 0.331,respectively).The N turnover among compartments of S.salsa marsh showed that N uptake from aboveground parts and roots were 2.539 and 0.622 g/m2,respectively.The N translocation from aboveground parts to roots and from roots to soil were 2.042 and 0.076 g/m2,respectively.The N translocation from aboveground living bodies to litter was 0.497 g/m2,the annual N return from litter to soil was far less than 0.368 g/m2,and the net N mineralization in topsoil during the growing season was 0.033 g/m2.N was an important limiting factor in S.salsa marsh,and the ecosystem was classified as unstable and vulnerable.S.salsa was seemingly well adapted to the low-nutrient status and vulnerable habitat,and the nutrient enrichment due to N import from the Yellow River estuary would be a potential threat to the S.salsa marsh.Excessive nutrient loading might favor invasive species and induce severe long-term degradation of the ecosystem if human intervention measures were not taken.The N quantitative relationships determined in our study might provide a scientific basis for the establishment of effective measures.Xiaojie Mou Zhigao Sun Lingling Wang Chuanyuan Wang 2011Journal of Environmental Sciences2011,23,6:11
12Recent development of a refined multiple air pollutant emission inventory of vehicles in the Central Plains of China显示文摘Central Plains region of China,represented by Henan Province,is facing serious air pollution problems.Vehicular exhaust emissions had adverse impacts on the atmospheric environment.The first comprehensive and novel vehicle emission inventory for Henan Province using vehicle kilometers traveled,localized emission factors,and activity data at city-level was developed.Furthermore,3 km×3 km gridded emission and temporal variations were determined by using localized information.Results show that the total emissions of sulfur dioxide(SO2),nitrogen oxides(NOx),carbon monoxide(CO),particular matter with aerodynamic diameter<10μm(PM10),aerodynamic diameter<2.5μm(PM2.5),volatile organic compounds(VOCs),VOCs-evaporation and ammonia in 2015 were 9.1,533.4,1190.7,23.7,21.6,150.8,31.5 and 10.4 Gg,respectively,and the emission intensities of the above pollutants were 0.05,2.7,6.0,0.1,0.1,0.8,0.2 and 0.05 g/km,respectively.Vehicles meeting the Primary China 1,China 3 and China 4 contributed 89.1%,82.7%,75.3%,75.5%,75.5%,68.2%,68.4%and 82.3%for SO2,NOx,CO,PM10,PM2.5,VOCs,VOCs-evaporation and ammonia emissions,respectively.Zhengzhou,Zhoukou,Nanyang,Luoyang,Shangqiu and Xinyang showed relatively higher emissions and contributed more than 50%of each pollutant.The spatial distribution indicated obvious characteristics of the road network,and high-level emission was concentrated in the downtown areas.Additionally,the ozone formation potential(OFP)based on the estimated speciated VOC emissions was 569.6 Gg in Henan Province.Aliphatic and aromatic hydrocarbons were the main species of VOCs,whereas olefins contributed the largest proportion of OFP,with 42.2%.Xingke Gu Shasha Yin Xuan Lu Huan Zhang Lingling Wang Ling Bai Chen Wang Ruiqin Zhang Minghao Yuan 2019Journal of Environmental Sciences2019,31,10:11
13Evapotranspiration estimation methods in hydrological models显示文摘实际土壤水分蒸发蒸腾损失总量是水文学周期和连接陆地表面水平衡和陆地表面精力平衡的一个唯一的术语的一个关键过程。土壤水分蒸发蒸腾损失总量在在水文学模型模仿土壤水分蒸发蒸腾损失总量评价方法的气候变化,和评论的水文学效果起一个关键作用具有重要重要性。这篇论文第一总结方法在水文学模型使用了的土壤水分蒸发蒸腾损失总量评价然后分类他们进由他们的机制收集方法的综合变换方法和分类。综合变换方法通常在水文学模型被使用,二差别在他们之中存在:一个人在潜在的蒸发评价方法,当时其它在为定义在潜在的蒸发和实际土壤水分蒸发蒸腾损失总量之间的关系的功能。由于 Penman-Monteith 方法和存在数据无常的更高的信息要求,简化了实验方法因为精明的潜在、实际的土壤水分蒸发蒸腾损失总量广泛地在水文学模型被使用。不同土壤水分蒸发蒸腾损失总量计算方法被使用取决于水文学模型,和重要性的复杂性,在最合适的土壤水分蒸发蒸腾损失总量方法的选择的困难被讨论。最后,这份报纸指出在水文学建模估计方法的土壤水分蒸发蒸腾损失总量的未来的发展趋势。ZHAO Lingling XIA Jun XU Chong-yu WANG Zhonggen SOBKOWIAKLeszek LONG Cangrui 2013Journal of Geographical Sciences2013,23,2:10
14Plant HP1 protein ADCP1 links multivalent H3K9 methylation readout to heterochromatin formation显示文摘Heterochromatin Protein 1 (HP1) recognizes histone H3 lysine 9 methylation (H3K9me) through its conserved chromodomain and maintains heterochromatin from fission yeast to mammals. However, in Arabidopsis, Like Heterochromatin Protein 1 (LHP1) recognizes and colocalizes genome-wide with H3K27me3, and is the functional homolog of Polycomb protein. This raises the question whether genuine HP1 homologs exist in plants. Here, we report on the discovery of ADCP1, a plant-specific triple tandem Agenet protein, as a multivalent H3K9me reader in Arabidopsis, and establish that ADCP1 is essential for heterochromatin formation and transposon silencing through modulating H3K9 and DNA methylation levels. Structural studies revealed the molecular basis underlying H3K9me-specific recognition by tandem Agenet of ADCP1. Similar to human HP1α and fly HP1a, ADCP1 mediates heterochromatin phase separation. Our results demonstrate that despite its distinct domain compositions, ADCP1 convergently evolves as an HP1-equivalent protein in plants to regulate heterochromatin formation.Shuai Zhao Lingling Cheng Yifei Gao Baichao Zhang Xiangdong Zheng Liang Wang Pilong Li Qianwen Sun Haitao Li 2019Cell Research2019,29,1:10
15Characteristics of secondary inorganic aerosol and sulfate species in size-fractionated aerosol particles in Shanghai显示文摘Sulfate, nitrate and ammonium(SNA) are the dominant species in secondary inorganic aerosol, and are considered an important factor in regional haze formation. Size-fractionated aerosol particles for a whole year were collected to study the size distribution of SNA as well as their chemical species in Shanghai. SNA mainly accumulated in fine particles and the highest average ratio of SNA to particulate matter(PM) was observed to be 47% in the fine size fraction(0.49–0.95 μm). Higher sulfur oxidation ratio and nitrogen oxidation ratio values were observed in PM of fine size less than 0.95 μm. Ion balance calculations indicated that more secondary sulfate and nitrate would be generated in PM of fine size(0.49–0.95 μm). Sulfur K-edge X-ray absorption near-edge structure(XANES) spectra of typical samples were analyzed. Results revealed that sulfur mainly existed as sulfate with a proportion(atomic basis) more than 73% in all size of PM and even higher at 90% in fine particles. Sulfate mainly existed as(NH4)2SO4 and gypsum in PM of Shanghai. Compared to non-haze days, a dramatic increase of(NH4)2SO4 content was found in fine particles on haze days only, which suggested the promoting impact of(NH4)2SO4 on haze formation. According to the result of air mass backward trajectory analysis, more(NH4)2SO4 would be generated during the periods of air mass stagnation. Based on XANES, analysis of sulfate species in size-fractionated aerosol particles can be an effective way to evaluate the impact of sulfate aerosols on regional haze formation.Shilei Long Jianrong Zeng Yan Li Liangman Bao Lingling Cao Ke Liu Liang Xu Jun Lin Wei Liu Guanghua Wang Jian Yao Chenyan Ma Yidong Zhao 2014Journal of Environmental Sciences2014,26,5:10
16Phase-transfer interface promoted corrosion from PtNi10 nanoctahedra to Pt4Ni nanoframes显示文摘向 PtNi 的腐蚀的一条新奇二阶段的途径 < 潜水艇 class= “ a-plus-plus ” > 10 nanoctahedra 被开发了。在这策略,在油可溶的 PtNi 的 Ni 的活跃部件 < 潜水艇 class= “ a-plus-plus ” > 居住在上面的甲苯阶段,受不了蚀刻并且是的 10 nanoctahedra 然后由 ethylenediaminetetraacetate (EDTA ) 与协作转了进一个更低的水的阶段。由于 EDTA 支持的阶段转移接口的存在,腐蚀反应在温和条件下面以加速的率继续了。明确地,八面的磅的结果的产品 < 潜水艇 class= “ a-plus-plus ” > 4 Ni nanoframes 成功地第一次被制作,并且 PtNi < 潜水艇 class= “ a-plus-plus ” > 4 当 EDTA-2Na 的剂量被减少时,多孔的 octahedra 能被获得。在这个二阶段的系统的系统的研究以后,合作腐蚀机制被建议说明八面的磅的形成<潜水艇class=“ a-plus-plus ”> 4 Ni nanoframes ,从许多种类包含贡献(即, O <潜水艇class=“ a-plus-plus ”> 2 , H <潜水艇class=“ a-plus-plus ”> 2 O , H <啜class=“ a-plus-plus ”>+, OAm ,和 EDTA <潜水艇class=“ a-plus-plus ”> 4 )。由于磅的迷人的三维的几何学<潜水艇class=“ a-plus-plus ”> 4 Ni nanoframes 和 PtNi <潜水艇class=“ a-plus-plus ”> 4 多孔的 octahedra ,两个在太古的 PtNi 上侵蚀的 nanocrystals 显示出优异活动<潜水艇class=“ a-plus-plus ”>为在硝基苯的碱的媒介和加氢的乙醇 electrooxidation 的 10 nanoctahedra 。Yu Wang Yueguang Chen Caiyun Nan Lingling Li Dingsheng Wang Qing Peng Yadong Li 2015Nano Research2015,8,1:10
17Lentiviral-mediated gene transfer into human adipose-derived stem cells:role of NELL1 versus BMP2 in osteogenesis and adipogenesis in vitro显示文摘(NELL1 ) 象 NEL 一样分子 1 是与 craniosynostosis 联系的一个有势力 osteogenic 因素。侵入人体气管粘膜的病菌,大多数通常为基因治疗使用了病毒的向量,有可以限制成骨的几劣势。以前的研究证明了 lentiviruses 能为骨头新生为基因治疗用作理想的向量。在这研究,编码人的 NELL1 和骨头的二 lentiviral 向量(LvNELL1 和 LvBMP2 ) 分别地,形态基因的 protein-2 (BMP2 ) 被构造。在 vitro 的人的脂肪质导出干细胞(hADSCs ) 的增长,成骨,和 adipogenesis 上的 LvNELL1 感染的效果被估计并且与 LvBMP2 的相比。结果显示出感染 LvNELL1 的那 hADSCs 能高效地并且稳定地 overexpress 目标基因。3-(4,5-dimethylthiazol-2-yl )-2,5-diphenyltetrazolium 溴化物试金结果表明了那 LvBMP2,然而并非 LvNELL1,提高了 hADSCs 的增长。对碱的磷酸酶活动和细胞的矿化作用的评价显示 LvNELL1 感染支持了 hADSCs 的 osteogenic 区别,并且效果与 LvBMP2 的是可比较的。实时聚合酶链反应(PCR ) 在 hADSCs 揭示了那 LvNELL1 感染 upregulated OSX 表情然而并非 RUNX2 表示。另外,分析显示出的 adipogenic 标记(类脂化合物微滴, peroxisome 激活 proliferator 受体,和脂蛋白脂肪分解酵素) LvNELL1 能戏剧性地禁止 hADSCs,而是 LvBMP2 的 adipogenic 区别,这没有如此的效果。一起拿,这些调查结果建议在 hADSCs 的调停 lentiviral 的 NELL1 基因转移可以是一条新奇、有希望的途径完成有效、精确的骨头新生。Yajing Liu Caiyun Chen Huixia He Dongsheng Wang LingLing E Zhongyu Liu Hongchen Liu 2012Acta Biochimica et Biophysica Sinica2012,44,10:10
18Nitrogen Biological Cycle Characteristics of Seepweed(Suaeda salsa) Wetland in Intertidal Zone of Huanghe(Yellow) River Estuary显示文摘From April 2008 to November 2009,the nitrogen(N) cycle of plantsoil system in seepweed(Suaeda salsa) wetland in the intertidal zone of the Huanghe(Yellow) River estuary was studied.Results showed that soil N had sig-nificant seasonal fluctuations and vertical distribution,and the net N mineralization rates in topsoil were significantly different in growing season(p < 0.01).The N/P ratio(9.87 ± 1.23) of S.salsa was less than 14,indicating that plant growth was limited by N.The N accumulated in S.salsa litter at all times during decomposition,which was ascribed to the N immobilization by microbes from the environment.Soil organic N was the main N stock of plant-soil system,accounting for 97.35% of the total N stock.The N absorption and utilization coefficients of S.salsa were very low(0.0145 and 0.3844,respectively),while the N cycle coefficient was high(0.7108).The results of the N turnovers among compartments of S.salsa wetland showed that the N uptake amount of aboveground part and root were 7.764 g/m2and 4.332 g/m2,respectively.The N translocation amounts from aboveground part to root and from root to soil were 3.881 g/m2 and 0.626 g/m2,respectively.The N translocation amount from aboveground living body to litter was 3.883 g/m2,the annual N return amount from litter to soil was more than 0.125(-) g/m2(minus represented immobilization),and the net N mineralization amount in topsoil(0-15 cm) in growing season was 1.190 g/m2.The assessment of N biological cycle status of S.salsa wetland indicated that N was a very important limiting factor and the ecosystem was situated in unstable and vulnerable status.The S.salsa was seemingly well adapted to the low-nutrient status and vulnerable habitat,and the N quantitative relationships determined in the compartment model might provide scientific base for us to reveal the special adaptive strategy of S.salsa to the vulnerable habitat in the following studies.SUN Zhigao MOU Xiaojie SUN Jingkuan SONG Hongli YU Xiang WANG Lingling JIANG Huanhuan SUN Wanlong SUN Wenguang 2012Chinese Geographical Science2012,22,1:9
19Toxicological effects involved in risk assessment of rare earth lanthanum on roots of Vicia faba L.seedlings显示文摘Combined chemical analyses and biological measurements were utilized to investigate potential toxicological effects and possible mechanisms involved in risk assessment of rare earth elements (REEs) on Vicia faba L.seedlings,which were hydroponically cultivated and exposed to various concentrations of lanthanum (La) for 15 days.The results showed that La contents in both the solution and roots increased with the increase of extraneous La,contributing to hormetic dose responses of superoxide dismutase (SOD),catalase (CAT),guaiacol peroxidase (GPX),ascorbate peroxidase (APX) and endoprotease (EP) isozymes activities,and HSP 70 production enhanced at low doses but suppressed at higher doses of La.These physiological responses constituted antioxidant and detoxification systems against La-induced oxidative stress.The elevated La levels also contributed to oxidatively modified proteins,which were most responsible for subsequent cell death and growth retardation of the roots.By combination of hormetic and traditional threshold dose levels,the threshold dose range was deduced to be 108-195 μg La/g dry weight in the roots,corresponding to 0.90-3.12 mg/L of soluble La in the culture solution.It suggests that persistent applications of REEs may lead to potential ecological risk in the environment.Chengrun Wang Mei He Wen Shi Jessie Wong Tao Cheng Xiaorong Wang Lingling Hu Fenfen Chen 2011Journal of Environmental Sciences2011,23,10:9
20Deformation behavior of non-rigid airships in wind tunnel tests显示文摘Deformation behavior of non-rigid airships in wind tunnel tests is studied by considering three factors, including internal pressure, flow velocity and angle of attack. Fiber Bragg grating strain sensors are used to measure the deformation of non-rigid airships. Wind tunnel tests in the case of different flow velocities and angles of attack are conducted. The measurement results reveal that the airship deformation is in proportion to internal pressure. For the tensile region,the airship deformation is in proportion to flow velocity. Effects of angle of attack on structural deformation are more complicated and there is no clear relationship existing between airship deformation and angle of attack.Lingling LU Hongwei SONG Yiwei WANG Chenguang HUANG 2019Chinese Journal of Aeronautics2019,32,3:9
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