|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | A review of lithium-ion battery safety concerns:The issues,strategies,and testing standards显示文摘Efficient and reliable energy storage systems are crucial for our modern society.Lithium-ion batteries(LIBs)with excellent performance are widely used in portable electronics and electric vehicles(EVs),but frequent fires and explosions limit their further and more widespread applications.This review summarizes aspects of LIB safety and discusses the related issues,strategies,and testing standards.Specifically,it begins with a brief introduction to LIB working principles and cell structures,and then provides an overview of the notorious thermal runaway,with an emphasis on the effects of mechanical,electrical,and thermal abuse.The following sections examine strategies for improving cell safety,including approaches through cell chemistry,cooling,and balancing,afterwards describing current safety standards and corresponding tests.The review concludes with insights into potential future developments and the prospects for safer LIBs. | Yuqing Chen Yuqiong Kang Yun Zhao Li Wang Jilei Liu Yanxi Li Zheng Liang Xiangming He Xing Li Naser Tavajohi Baohua Li | 2021 | Journal of Energy Chemistry2021，30，8： | 29 |
| 2 | Computer-assisted preoperative planning for proximal humeral fractures by minimally invasive plate osteosynthesis显示文摘 | Chen Yanxi Zhang Kun Qiang Minfei Li Haobo Dai Hao | 2014 | Chinese Medical Journal2014，，18： | 9 |
| 3 | Hydrogen sulfide promotes flowering in heading Chinese cabbage by S-sulfhydration of BraFLCs显示文摘Heading Chinese cabbage(Brassica rapa L.syn.B.campestris L.ssp.chinensis Makino var.pekinensis(Rupr.)J.Cao et Sh.Cao)is a cruciferous Brassica vegetable that has a triplicate genome,owing to an ancient genome duplication event.It is unclear whether the duplicated homologs have conserved or diversi fied functions.Hydrogen sulfide(H_(2)S)is a plant gasotransmitter that plays important physiological roles in growth,development,and responses to environmental stresses.The modification of cysteines through S-sulfhydration is an important mechanism of H_(2)S,which regulates protein functions.H?S promotes flowering in Arabidopsis and heading Chinese cabbage.Here we investigated the molecular mechanisms of H_(2)S used to promote flowering in the latter.Four,five,and four BraFLC,BraSOC I,and BraFT homologs were identi fi ed in heading Chinese cabbage.Different BraFLC proteins were bound to different CArG boxes in the promoter regions of the BraSOC I and BraFT homologs,producing different binding patterns.Thus,there may be functionally diverse BraFLC homologs in heading Chinese cabbage.Exogenous H_(2)S at 100μmol L^(-1) significantly promoted flowering by compensating for insuf fi cient vernalization.BraFLC 1 and BraFLC_(3) underwent S-sulfhydration by H_(2)S,after which their abilities to bind most BraSOC I or BraFT promoter probes weakened or even disappeared.These changes in binding ability were consistent with the expression pattern of the BraFT and BraSOC I homologs in seedlings treated with H_(2)S.These results indicated that H_(2)S signaling regulates flowering time.In summary,H_(2)S signaling promoted plant flowering by weakening or eliminating the binding abilities of BraFLCs to downstream promoters through S-sulfhydration. | Xiaoli Ma Liping Zhang Zhuoya Pei Linlin Zhang Zhiqiang Liu Danmei Liu Xuefeng Hao Zhuping Jin Yanxi Pei | 2021 | Horticulture Research2021，8，1： | 6 |
| 4 | Online Monitoring of Welding Status Based on a DBN Model During Laser Welding显示文摘In this research,an auxiliary illumination visual sensor system,an ultraviolet/visible(UVV)band visual sensor system(with a wavelength less than 780 nm),a spectrometer,and a photodiode are employed to capture insights into the high-power disc laser welding process.The features of the visible optical light signal and the reflected laser light signal are extracted by decomposing the original signal captured by the photodiode via the wavelet packet decomposition(WPD)method.The captured signals of the spectrometer mainly have a wavelength of 400-900 nm,and are divided into 25 sub-bands to extract the spectrum features by statistical methods.The features of the plume and spatters are acquired by images captured by the UVV visual sensor system,and the features of the keyhole are extracted from images captured by the auxiliary illumination visual sensor system.Based on these real-time quantized features of the welding process,a deep belief network(DBN)is established to monitor the welding status.A genetic algorithm is applied to optimize the parameters of the proposed DBN model.The established DBN model shows higher accuracy and robustness in monitoring welding status in comparison with a traditional back-propagation neural network(BPNN)model.The effectiveness and generalization ability of the proposed DBN are validated by three additional experiments with different welding parameters. | Yanxi Zhang Deyong You Xiangdong Gao Seiji Katayama | 2019 | Engineering2019，5，4： | 5 |
| 5 | Construction of piezoelectric BaTiO_(3)/MoS_(2) heterojunction for boosting piezo-activation of peroxymonosulfate显示文摘The rapid recombination of charge carriers in piezoelectric materials has always been the problem that limits their piezoelectric performance for removal of organic pollutants in water.Herein,we construct a piezoelectric Ba TiO_(3)/MoS_(2)(BTO/MS)that follows a type II heterojunction charge transfer system to inhibit the recombination of electron-hole(e^(-)-h^(+))pairs,which is beneficial to the activation of peroxymonosulfate(PMS)for the removal of antibiotic ornidazole(ORZ)pollutants.The optimal ratio of BTO/MS for ORZ degradation under the piezo/PMS process is 13.9,3.6,62.1 and 2.0 times higher than that of the BTO/piezo,MS/piezo,(BTO/MS)/PMS and(BTO/MS)/piezo processes,respectively.The high efficiency charge separation in the piezoelectric heterojunction of BTO/MS promotes the activation of PMS,resulting in the synergy of pizeocatalysis and PMS oxidation during the process of ORZ degradation.This study provides an idea for enhancing piezo-activation of PMS by constructing heterojunctions in piezoelectric materials. | Yanxi Chen Shenyu Lan Mingshan Zhu | 2021 | Chinese Chemical Letters2021，32，6： | 5 |
| 6 | Hydrogen sulfide inhibits ethylene-induced petiole abscission in tomato(Solanum lycopersicum L.)显示文摘Abscission is a dynamic physiological process that is ubiquitous in plants and can also be an essential agronomic trait in crops,thus attracting attention from plant growers and breeders.In general,the process of plant organ abscission can be divided into four steps,among which the step to obtain the competence to respond to abscission signals(step 2)is the most complex;however,the molecular mechanism underlying this process remains unclear.In this study,we found that hydrogen sulfide(H_(2)S)inhibited the abscission of the tomato petiole in a dose-dependent manner,and the abscission of the petiole was accelerated when an H_(2)S scavenger was applied.Further enzymatic activity and gene expression analyses showed that H_(2)S suppressed the activity of enzymes capable of modifying the cell wall by inhibiting the usual upregulation of the transcription of the corresponding genes during the abscission process but not by affecting the activities of these enzymes by direct posttranslational modification.H_(2)S treatment upregulated the expression levels of SlIAA3 and SlIAA4 but downregulated the transcription of ILR-L3 and ILR-L4 in the earlier stages of the abscission process,indicating that H_(2)S probably functioned in the second step of the abscission process by preventing the abscission zone cells from obtaining the competence to respond to abscission signals by modulating the content of the bioactive-free auxin in these cells.Moreover,similar H_(2)S inhibitory effects were also demonstrated in the process of floral organ abscission and anther dehiscence in other plant species,suggesting a ubiquitous role for H_(2)S in cell separation processes. | Danmei Liu Jianing Li Zhuowen Li Yanxi Pei | 2020 | Horticulture Research2020，7，1： | 4 |
| 7 | Depressing effect of sodium hexametaphosphate on apatite in flotation of rutile显示文摘The separation of rutile from apatite by flotation and the mechanism of depressing the apatite of sodium hexametaphosphate were studied. The results showed that rutile and apatite could be separated by using alkyl-imino-bismethylene phosphoric acid and sodium hexametaphosphate as a collector and a regulator, respectively. Sodium hexametaphosphate could selectively dissolve calcium ions on the apatite surface, and make calcium ions break away from lattice binding through combining. | Hao Ding Hai Lin Yanxi Deng | 2007 | Journal of University of Science and Technology Beijing2007，14，3： | 4 |
| 8 | Preparation of layered oxide Li(Co_(1/3)Ni_(1/3)Mn_(1/3))O_2 via the sol-gel process显示文摘获得同质的分层的氧化物李(Co1/3Ni1/3Mn1/3 ) 是的 O2 锂插入积极电极材料,把柠檬性的酸用作一个 chelating 代理人的大音阶的第五音胶化过程被使用。材料李(Co1/3Ni1/3Mn1/3 ) O2 在不同锻烧温度被综合。XRD 实验显示分层的李(Co1/3Ni1/3Mn1/3 ) O2 材料能在 800 的更低的温度被综合 ? 琠? 楢整漠吗? | ZHANG Wen LIU Hanxing HU Chen ZHU Xianjun LI Yanxi | 2008 | Rare Metals2008，27，2： | 4 |
| 9 | Preparation and luminescence properties of Y_2O_3:Er^(3+) /TiO_2 with high specific surface area显示文摘The three composites Y2O3 :Er3+ , Y2O3 :Er3+ /Yb 3+ andY2O3 :Er3+ /TiO2 were prepared using coprecipitation and sol-gel techniques. Their morphology, specific surface area, porosity, UV-vis. absorption spectra and fluorescence spectra were measured using SEM, TEM, surface analysis, UV-vis. absorption and photoluminescence spectrophotometry. SEM and TEM showed that samples prepared using coprecipitation were dispersed, while Y2O3 :Er3+ /TiO2 particles possessed a mesoporous surface and average diameter of about 10 nm. The specific surface area and porosity of Y2O3 :Er3+ /TiO2 did not result from the combination of the individual properties of Y2O3 :Er3+ and TiO2 . The specific surface area of Y2O3 :Er3+ /TiO2 was 135.991 m 2 /g and was 4.8 times that of Y2O3 :Er3+ and 2.5 times that of Degussa P25 TiO2 . A high specific surface area is conducive for application to TiO2 photocatalysis. The fluorescence spectra of the three composites exhibited three upconversion emission peaks with maxima at 237, 395 and 467 nm following excitation at 388, 500 and 570 nm, respectively. | YE YanXi LIU EnZhou HU XiaoYun YAN ZhiYun JIANG ZhenYi FAN Jun | 2011 | Chinese Science Bulletin2011，56，25： | 4 |
| 10 | Nickel catalysts supported on MgO with different specific surface area for carbon dioxide reforming of methane显示文摘In this paper, three kinds of MgO with different specific surface area were prepared, and their effects on the catalytic performance of nickel catalysts for the carbon dioxide reforming of methane were investigated. The results showed that MgO support with the higher specific surface area led to the higher dispersion of the active metal, which resulted in the higher initial activity. On the other hand, the specific surface area of MgO materials might not be the dominant factor for the basicity of support to chemisorb and activate CO2, which was another important factor for the performance of catalysts. Herein, Ni/MgO(CA) catalyst with proper specific surface area and strong ability to activate CO2exhibited stable catalytic property and the carbon species deposited on the Ni/MgO(CA) catalyst after 10 h of reaction at 650 ?C were mainly activated carbon species. | Luming Zhang Lin Li Yuhua Zhang Yanxi Zhao Jinlin Li | 2014 | Journal of Energy Chemistry2014，23，1： | 4 |
| 11 | Growth and sustainability of Suaeda salsa in the Lop Nur,China显示文摘Extremely saline soils are very harsh environments for the growth and survival of most plant species, however, halophytes can grow well. The underlying mechanism of halophyte to resist high saline is not well understood by us. This study was conducted at the potash mine near the Lop Nur, China, where the effects of the halophyte Suaeda salsa L. on the saline-alkaline soils and its growth and sustainability were investigated. Four plots(in which the salt encrustation layers were removed), with different soil treatments were evaluated:(1) undisturbed soil, with no additional treatment(T1);(2) the slag soil zone, in which a 40-cm layer of slag was placed on the undisturbed soil surface(T2);(3) slag+sandy soil, in which a 20-cm layer of slag was placed in the lower layer and 20 cm of sandy soil, taken from an area about 70 km away from Lop Nur potash mine, where Tamarix species were growing, was placed in the upper layer(T3); and(4) a 40-cm sandy soil layer taken from the area where Tamarix species were growing was placed on undisturbed soil(T4). Soil nutrient contents increased in the four treatments, but salt content only decreased in the T1 treatment. Salt content in the T4 treatment increased over the two-year period, which may be partly attributed to salt deposition from wind-blown dust within the mine and salt accumulation within the surface soil(0–20 cm) in response to high evaporative demands. The S. salsa plants exhibited greater improvements in growth under the T4 treatment than under the T1, T2, and T3 treatments, which demonstrated that low levels of salinity are beneficial for the growth of this species. The T1 treatment was sustainable because of its low cost and superior soil improvement characteristics. Therefore, S. salsa plants not only reduced soil salinity and increased soil nutrient levels, but also ameliorated the plant growth environment, which would be beneficial for both the ecological restoration of the Lop Nur area and similar areas throughout the world. | LI Congjuan LIU Ran WANG Shijie SUN Yongqiang LI Shengyu ZHANG Heng GAO Jie DANG Yanxi ZHANG Lili | 2018 | Journal of Arid Land2018，10，3： | 4 |
| 12 | The green-emitting fluorescence of nano Y_2O_3:Er^(3+) under different excitations显示文摘The green-emitting fluorescent powders of nano Y2O3:Er3+ were fabricated by the coprecipitation method. The X-ray diffraction pattern shows that as-prepared Y2O3:Er3+ is the cubic phase crystal with a grain size of about 30 nm. The UV-Vis spectrum indicates Y2O3:Er3+ exhibits five ultraviolet visible absorption peaks at 365, 377, 489, 521 and 652 nm respectively. Meanwhile, the fluorescence spectra of Y2O3:Er3+ display four emission peaks at 522, 537, 550 and 562 nm at the excitation of 365, 377 and 521 nm, respectively. The green-emitting fluorescent mechanism of Y2O3:Er3+ is proposed as well. Additionally, the temperature dependence of fluorescence properties and metal Ag fluorescence enhancement effect are investigated. Results show that increasing the annealing temperature and metal Ag doping both can enhance the fluorescence intensity. The maximum enhancement is 87.5% after Ag is doped. | JI RuoNan YE YanXi HU XiaoYun FAN Jun LIU EnZhou ZHANG Qian ZHAO ChaoShuai YE SiWen | 2012 | Science China(Physics,Mechanics & Astronomy)2012，55，7： | 3 |
| 13 | Seismic vulnerability assessment of water supply network in Tianjin, China显示文摘水供应网络(WSN ) 系统是民用的基础结构系统的一个批评元素。它操作的复杂性和都系统分开的部件平均数的高数字不能简单地被估计。地震是到 WSN 的最严肃的自然危险,并且地震风险评价是必要的识别它的危险到损坏的不同阶段并且保证系统安全。在这份报纸,使用作为案例研究在北中国位于天津的机场区域的 WSN ,一个量的危险评价方法被用来估计水供应管道将在地震承受的损坏,并且有限元素软件 ABAQUS 和模糊数学理论被采用构造评价方法。ABAQUS 被使用模仿地震损坏输送 WSN 的片断和部件。会员函数基于模糊理论被建立在系统计算部件的会员。然而,考虑整个系统的危险,模糊的簇分析被用来区分管子片断和部件的重要性。最后,危险被这些功能确定。建议方法论试图基于被模型和数学方法基于损坏的数据模仿并且计算的管子危险估计 WSN 的表演。在这研究,为 WSN 的一个整个地震危险评价方法被造,并且这些分析被期望在地震灾难为一个缓解计划提供必要信息。 | Yanxi CHEN Zhiguang NIU Jiaqi BAI Yufei WANG3 | 2014 | Frontiers of Environmental Science & Engineering2014，8，5： | 3 |
| 14 | Hydrogen sulfide: the shutter button of stomata in plants显示文摘In the past few decades,Hydrogen sulfide(H2S)has been newly witnessed as a third gasotransmitter with similar biological functions to its two previously identified counterparts nitric oxide(NO)and carbon monoxide(CO),after being rec- | Zhuping Jin Yanxi Pei | 2016 | Science China(Life Sciences)2016，59，11： | 2 |
| 15 | A Convenient and Biosafe Replicon with Accessory Genes of SARS-CoV-2 and Its Potential Application in Antiviral Drug Discovery显示文摘SARS-CoV-2 causes the pandemic of COVID-19 and no effective drugs for this disease are available thus far.Due to the high infectivity and pathogenicity of this virus,all studies on the live virus are strictly confined in the biosafety level 3(BSL3)laboratory but this would hinder the basic research and antiviral drug development of SARS-CoV-2 because the BSL3 facility is not commonly available and the work in the containment is costly and laborious.In this study,we constructed a reverse genetics system of SARS-CoV-2 by assembling the viral cDNA in a bacterial artificial chromosome(BAC)vector with deletion of the spike(S)gene.Transfection of the cDNA into cells results in the production of an RNA replicon that keeps the capability of genome or subgenome replication but is deficient in virion assembly and infection due to the absence of S protein.Therefore,such a replicon system is not infectious and can be used in ordinary biological laboratories.We confirmed the efficient replication of the replicon by demonstrating the expression of the subgenomic RNAs which have similar profiles to the wild-type virus.By mutational analysis of nsp12 and nsp14,we showed that the RNA polymerase,exonuclease,and cap N7 methyltransferase play essential roles in genome replication and sgRNA production.We also created a SARS-CoV-2 replicon carrying a luciferase reporter gene and this system was validated by the inhibition assays with known anti-SARS-CoV-2 inhibitors.Thus,such a one-plasmid system is biosafe and convenient to use,which will benefit both fundamental research and development of antiviral drugs. | Yun-Yun Jin Hanwen Lin Liu Cao Wei-Chen Wu Yanxi Ji Liubing Du Yiling Jiang Yanchun Xie Kuijie Tong Fan Xing Fuxiang Zheng Mang Shi Ji-An Pan Xiaoxue Peng Deyin Guo | 2021 | Virologica Sinica2021，36，5： | 2 |
| 16 | Impacts of climate warming and crop management on maize phenology in northern China显示文摘Climate warming has and will continue to exert a significantly impact on crop phenology in the past and coming decades.Combining observed data of phenology and a crop growth model provides a good approach for quantitating the effects of climate warming and crop management on crop phenology.The purpose of this study is to determine the impacts of temperature change, sowing date(SD) adjustment and cultivar shift on maize phenology in northern China during 1981–2010.Results indicated that climate warming caused anthesis date(AD) and maturity date(MD) of maize to advance by 0.2-5.5 and 0.6-11.1 d/10 a, respectively.Due to climate-driven changes in maize phenology, three growth periods of maize, i.e., vegetative growth period(VGP;from sowing to anthesis), reproductive growth period(RGP;from anthesis to maturity) and whole growth period(WGP;from sowing to maturity) shortened by 0.2-5.5, 0.4-5.6 and 0.6-11.1 d/10 a, respectively.With SD adjustment(i.e., SD advancement), AD and MD occurred early by 0.5-2.6 and 0.1-3.4 d/10 a, respectively.SD adjustment caused duration of VGP of maize to prolong.However, duration of RGP slightly shortened by 0.1-1.3 d/10 a.Furthermore, due to cultivar shift, MD of maize significantly delayed by 4.9-12.2 d/10 a.Durations of VGP, RGP and WGP of maize prolonged by 0.2-4.1, 1.6-8.4 and 4.3-11.8 d/10 a, respectively.In conclusion, our results indicated that cultivar shift, to some extent, could mitigate the negative impact of climate warming on maize phenology. | XIAO Dengpan ZHAO Yanxi BAI Huizi HU Yukun CAO Jiansheng | 2019 | Journal of Arid Land2019，11，6： | 2 |
| 17 | AGAMOUS AND TERMINAL FLOWER controls floral organ identity and inflorescence development in Medicago truncatula显示文摘Angiosperms integrate a multitude of endogenous and environmental signals to control floral development,thereby ensuring reproductive success.Here,we report the identification of AGAMOUS AND TERMINAL FLOWER(AGTFL),a novel regulator of floral development in Medicago truncatula.Mutation of AGTFL led to the transformation of carpels and stamens into numerous sepals and petals and altered primary inflorescence identity.AGTFL encodes a nucleus-localized proteincontaining a putative Myb/SANT-like DNA-binding domain and a PKc kinase domain.Molecular and genetic analyses revealed that AGTFL regulates the transcription of MtAGs and MtTFL1 to control floral organ identity and inflorescence development. | Butuo Zhu Hui Li Yifeng Hou Pengcheng Zhang Xiuzhi Xia Na Wang Hui Wang Kirankumar S.Mysore Jiangqi Wen Yanxi Pei Lifang Niu Hao Lin | 2019 | Journal of Integrative Plant Biology2019，61，8： | 2 |
| 18 | Facial asymmetry quantification for expression-invariant human identification 显示文摘 | Liu Yanxi Schmidt Karen L Cohn Jeffrey F | 2003 | Computer Vision and Image Understanding2003，91，12： | 1 |
| 19 | Two Pb(II) dicarboxylates constructed by rigid terephthalate or flexible d(+ )-camphorate with different 3D motif based on cooperative effect of steric hindrance of ligand and lone pair electrons 显示文摘 | TAN Yanxi WENG Fayan WU Meichun | 2009 | J Mol Struct2009，928，1： | 1 |
| 20 | Chaotic behavior of pulsating heat pipes 显示文摘 | Song Yanxi Xu Jinliang | 2009 | International Journal of Heat and Mass Transfer2009，，52： | 1 |
您所在的机构暂未开通此部分的功能，请联系管理员