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53篇 您的检索式:作者名="TIAN Yanling"
    题名 作者 年代 出处 被引量
1Study of atmospheric CO2 and CH4 at Longfengshan WMO/GAW regional station: The variations, trends, influence of local sources/sinks, and transport显示文摘Atmospheric CO_2 and CH_4 have been continuously measured since 2009 at Longfengshan WMO/GAW station(LFS) in China. Variations of the mole fractions, influence of long-distance transport, effects of local sources/sinks and the characteristics of synoptic scale variations have been studied based on the records from 2009 to 2013. Both the CO_2 and CH_4 mole fractions display increasing trends in the last five years, with growth rates of 3.1±0.02 ppm yr.1 for CO_2 and 8±0.04 ppb yr.1(standard error, 1-σ)for CH_4. In summer, the regional CO_2 mole fractions are apparently lower than the Marine Boundary Layer reference, with the lowest value of.13.6±0.7 ppm in July, while the CH_4 values are higher than the MBL reference, with the maximum of 139±6 ppb.From 9 to 17(Local time, LT) in summer, the atmospheric CO_2 mole fractions at 10 m a.g.l. are always lower than at 80 m, with a mean difference of.1.1±0.2 ppm, indicating that the flask sampling approach deployed may underestimate the background mole fractions in summer. In winter, anthropogenic emissions dominate the regional CO_2 and CH_4 mole fractions. Cluster analysis of backward trajectories shows that atmospheric CO_2 and CH_4 at LFS are influenced by anthropogenic emissions from the southwest(Changchun and Jilin city) all year. The synoptic scale variations indicate that the northeastern China plain acts as an important source of atmospheric CO_2 and CH_4 in winter.FANG ShuangXi Pieter P.TANS YAO Bo LUAN Tian WU YanLing YU DaJiang 2017Science China Earth Sciences2017,60,10:16
2Hybrid Laser Ablation and Chemical Modification for Fast Fabrication of Bio-inspired Super-hydrophobic Surface with Excellent Self-cleaning,Stability and Corrosion Resistance显示文摘Although laser ablation is considered as a facile technique to fabricate bio-inspired super-hydrophobic surfaces,the issue is that the initial laser treated metallic surfaces show super-hydrophilic property.It will take a long period to reach super-hydrophobic state under ambient air.It is reported that these super-hydrophobic surfaces could be easily damaged by thermal heating effect or interaction with other liquids,causing uncontrolled loss of super-hydrophobicity.In this study,a stable super-hydrophobic aluminum surface was rapidly fab-ricated via the hybrid laser ablation and surface chemical modification of(heptadecafluoro-1,1,2,2-tetradecyl)triethoxysilane(AC-FAS).Surface morphology and chemistry were systematically investigated to explore the generation mechanism of super-hydrophobicity.The water contact angle of the treated surfaces can reach up to 160.6°±1.5°with rolling angle of 3.0°±1.0°,exhibiting perfect self-cleaning capability,long-term stability,and excellent chemical stability in acidic as well as alkaline solutions.The potentiodynamic polarization tests implied that the super-hydrophobic surfaces showed better anti-corrosion performance.This hybrid laser ablation and surface chemical modification are very time-saving and low-cost,which offers a rapid way for quantity production of super-hydrophobic surface on aluminum material.Zhen Yang Xianping Liu Yanling Tian 2019Journal of Bionic Engineering2019,16,1:15
3Coordinated Transcriptional Regulation by the UVB Photoreceptor and Multiple Transcription Factors for Plant UV-B Responses显示文摘Non-damaging ultraviolet B(UV-B)light promotes photomorphogenic development and stress acclimation through UV-B-specific signal transduction in Arabidopsis.UV-B irradiation induces monomerization and nuclear translocation of the UV-B photoreceptor UV RESISTANCE LOCUS 8(UVR8).However,it is not clear how the nuclear localization of UVR8 leads to changes in global gene expression.Here,we reveal that nuclear UVR8 governs UV-B-responsive transcriptional networks in concert with several previously known transcription factors,including ELONGATED HYPOCOTYL 5(HY5)and PHYTOCHROME INTERACTING FACTOR 4(PIF4).Based on the transcriptomic analysis,we identify MYB13 as a novel positive regulator in UV-B-induced cotyledon expansion and stress acclimation.MYB13 is UV-B inducible and is predominantly expressed in the cotyledons.Our results demonstrate that MYB13 protein functions as a transcription factor to regulate the expression of genes involved in auxin response and flavonoid biosynthesis through direct binding with their promoters.In addition,photoactivated UVR8 interacts with MYB13 in a UV-B-dependent manner and differentially modulates the affinity of MYB13 with its targets.Taken together,our results elucidate the cooperative function of the UV-B photoreceptor UVR8 with various transcription factors in the nucleus to orchestrate the expression of specific sets of downstream genes and,ultimately,mediate plant responses to UV-B light.Chongzhen Qian Zhiren Chen Qing Liu Weiwei Mao Yanling Chen Wei Tian Yan Liu Jiupan Han Xinhao Ouyang Xi Huang 2020Molecular Plant2020,13,5:13
4Comparison of Clinical and Epidemiological Characteristics of Asymptomatic and Symptomatic SARS-CoV-2 Infection in Children显示文摘To understand the epidemiological and clinical features of the symptomatic and asymptomatic pediatric cases of COVID-19,we carried out a prospective study in Shanghai during the period of January 19 to April 30,2020.A total of 49 children(mean age 11.5±5.12 years)confirmed with SARS-CoV-2 infection were enrolled in the study,including 11(22.4%)domestic cases and 38(77.6%)imported cases.Nine(81.8%)local cases and 12(31.6%)imported cases had a definitive epidemiological exposure.Twenty-eight(57.1%)were symptomatic and 21(42.9%)were asymptomatic.Neither asymptomatic nor symptomatic cases progressed to severe diseases.The mean duration of viral shedding for SARS-CoV-2 in upper respiratory tract was 14.1±6.4 days in asymptomatic cases and 14.8±8.4 days in symptomatic cases(P>0.05).Forty-five(91.8%)cases had viral RNA detected in stool.The mean duration of viral shedding in stool was 28.1±13.3 days in asymptomatic cases and 30.8±18.6 days in symptomatic participants(P>0.05).Children<7 years shed viral RNA in stool for a longer duration than school-aged children(P<0.05).Forty-three(87.8%)cases had seropositivity for antibodies against SARS-CoV-2 within 1–3 weeks after confirmation with infection.In conclusion,asymptomatic SARS-CoV-2 infection may be common in children in the community during the COVID-19 pandemic wave.Asymptomatic cases shed viral RNA in a similar pattern as symptomatic cases do.It is of particular concern that asymptomatic individuals are potentially seed transmission of SARS-CoV-2 and pose a challenge to disease control.Jiehao Cai Xiangshi Wang Jun Zhao Yanling Ge Jin Xu He Tian Hailing Chang Aimei Xia Jiali Wang Jinqiang Zhang Zhongqiu Wei Jingjing Li Chuning Wang Jianshe Wang Qirong Zhu Xiaowen Zhai Mei Zeng 2020Virologica Sinica2020,35,6:4
5MOTION ERROR ESTIMATION OF 5-AXIS MACHINING CENTER USING DBB METHOD显示文摘为了估计 5 轴的运动错误,用机器制造中心,双球酒吧(DBB ) 方法被采用认识到诊断过程。在用机器制造中心的 5 轴的旋转的轴的运动错误来源由于各种各样的因素旋转的轴的排列错误和尖错误包括,例如旋转的轴的倾斜。从敏感观点,每个运动错误是可能的有 DBB 错误踪迹的偏差从一些仅仅特定的错误来源在产生的一个特别敏感方向。DBBerror 踪迹的模型根据空间几何学理论被建立。因此,每运动错误来源的敏感方向通过数字模拟被弄明白,它是使用的著名计算机生产厂商他为旋转错误评价的参考模式。评价方法被建议容易以量的方式估计旋转斧子的运动错误来源。为旋转错误评价验证建议 DBBmethod,试验性的测试在用机器制造中心 M-400 (MORISEIKI ) 的 5 轴上被执行。DBB 的失配的效果也被学习保证评价精确性。从试验性的数据,用机器制造中心的建议评价方法 for5 轴可行、有效,这被注意。CHEN Huawei ZHANG Dawei TIAN Yanling ICHIR0 Hagiwara 2006Chinese Journal of Mechanical Engineering2006,19,2:3
6Efficacy and safety of Liangxue Jiedu decoction for the treatment of progressive psoriasis vulgaris: a multicenter, randomized, controlled study显示文摘OBJECTIVE: To determine the clinical efficacy and safety of Liangxue Jiedu decoction(LJD) for the treatment of progressive psoriasis vulgaris and to provide the basis for the development of a standardized treatment protocol for psoriasis vulgaris.METHODS: In this multicenter, randomized, controlled study, patients with blood-heat type psoriasis were randomly assigned to receive either Chinese herbal medicine(LJD;treatment group) or Western Medicine(cetirizine hydrochloride, vitamin C, and vitamin B complex;control group). Psoriasis Area and Severity Index(PASI) scores were calculated in addition to the number of patients who achieved ≥ 50% or ≥ 75% improvement in PASI score from baseline. The change in symptoms of Chinese medicine(color of rash, burning sensation,itchiness, severity of irritation, and anger) was evaluated and safety was assessed as adverse events and laboratory analysis. t test, independent sample non-parametric test and χ2 test were used to analyze the results.RESULTS: A total of 238 participants were included in the study [treatment group, n = 122(PP analysis117);control group, n = 116(PP analysis 104)]. LJD treatment was associated with a significant improvement in skin lesions and symptoms com-pared with Western Medicine treatment. At the end of the 8-week treatment period, 23.77%(PP analysis 24.79%) of patients in the treatment group had achieved PASI75 and 57.38%(PP analysis 58.97%)had achieved PASI50;the corresponding figures in the control group were 9.48%(9.62%) and 25.00%(25.00%), respectively. The between-group differences were statistically significant(P < 0.05).CONCLUSION: Treatment of psoriasis vulgaris of the blood-heat type using LJD was associated with significantly better outcomes compared with those achieved using standard Western Medicine.Sun Liyun Li Tiantian Zhou Dongmei Yang Xiumin Tian Jing Zhao Junying Xu Wei He Yanling Liu Fang Tong Chunguan Chu Xiaoling Dai Ling Zhu Wei Xu Xuying Wang Ping 2020Journal of Traditional Chinese Medicine2020,40,2:3
7Design and Dynamic Modeling of a 2-DOF Decoupled Flexure-Based Mechanism显示文摘Flexure mechanisms with decoupled characteristics have been widely utilized in precision positioning applications.However,these mechanisms suffer from either slow response or low load capability.Furthermore,asymmetric design always leads to thermal error.In order to solve these issues,a novel 2-DOF decoupled mechanism is developed by monolithically manufacturing sets of statically indeterminate symmetric(SIS) flexure structures in parallel.Symmetric design helps to eliminate the thermal error and Finite Element Analysis(FEA) results show that the maximum coupling ratio between X and Y axes is below 0.25% when a maximum pretension force of 200 N is applied.By ignoring the mass effect,all the SIS flexure structures are simplified to 'spring-damper' components,from which the static and dynamics model are derived.The relation between the first resonant frequency of the mechanism and the load is investigated by incorporating the load mass into the proposed dynamics model.Analytical results show that even with a load of 0.5 kg,the first resonant frequency is still higher than 300 Hz,indicating a high load capability.The mechanism's static and dynamic performances are experimentally examined.The linear stiffnesses of the mechanism at the working platform and at the driving point are measured to be 3.563 0 N·μm-1 and 3.362 1 N·μm-1,respectively.The corresponding estimation values from analytical models are 3.405 7 N·μm-1 and 3.381 7 N·μm-1,which correspond to estimation errors of-4.41% and 0.6%,respectively.With an additional load of 0.16 kg,the measured and estimated first resonant frequencies are 362 Hz and 365 Hz,respectively.The estimation error is only 0.55%.The analytical and experimental results show that the developed mechanism has good performances in both decoupling ability and load capability;its static and dynamic performance can be precisely estimated from corresponding analytical models.The proposed mechanism has wide potentials in precision positioning applications.QIN Yanding TIAN Yanling ZHANG Dawei 2012Chinese Journal of Mechanical Engineering2012,25,4:3
8Porous rod-like Ni_(2)P/Ni assemblies for enhanced urea electrooxidation显示文摘The urea oxidation reaction has attracted increasing attention.Here,porous rod-like Ni2P/Ni assemblies,which consist of numerous nanoparticle subunits with matching interfaces at the nanoscale have been synthesized via a simple phosphating approach.Density functional theory calculations and density of states indicate that porous rod-like Ni2P/Ni assemblies can significantly enhance the activity of chemical bonds and the conductivity compared with NiO/Ni toward the urea oxidation reaction.The optimal catalyst of Ni2P/Ni can deliver a low overpotential of 50 mV at 10 mA·cm−2 and Tafel slope of 87.6 mV·dec−1 in urea oxidation reaction.Moreover,the constructed electrolytic cell exhibits a current density of 10 mA·cm−2 at a cell voltage of 1.47 V and an outstanding durability in the two-electrode system.This work has provided a new possibility to fabricate metal phosphides-metal assemblies with advanced performance.Qing Li Xinran Li Jiawei Gu Yanle Li Ziqi Tian Huan Pang 2021Nano Research2021,14,5:3
9Stability analysis of diffusive predator–prey model with modified Leslie–Gower and Holling-type III schemes显示文摘Yanling Tian Peixuan Weng 2011Applied Mathematics and Computation2011,,7:2
10Applying Stack Bidirectional LSTM Model to Intrusion Detection显示文摘Nowadays,Internet has become an indispensable part of daily life and is used in many fields.Due to the large amount of Internet traffic,computers are subject to various security threats,which may cause serious economic losses and even endanger national security.It is hoped that an effective security method can systematically classify intrusion data in order to avoid leakage of important data or misuse of data.As machine learning technology matures,deep learning is widely used in various industries.Combining deep learning with network security and intrusion detection is the current trend.In this paper,the problem of data classification in intrusion detection system is studied.We propose an intrusion detection model based on stack bidirectional long short-term memory(LSTM),introduce stack bidirectional LSTM into the field of intrusion detection and apply it to the intrusion detection.In order to determine the appropriate parameters and structure of stack bidirectional LSTM network,we have carried out experiments on various network structures and parameters and analyzed the experimental results.The classic KDD Cup’1999 dataset was selected for experiments so that we can obtain convincing and comparable results.Experimental results derived from the KDD Cup’1999 dataset show that the network with three hidden layers containing 80 LSTM cells is superior to other algorithms in computational cost and detection performance due to stack bidirectional LSTM model’s ability to review time and correlate with connected records continuously.The experiment shows the effectiveness of stack bidirectional LSTM network in intrusion detection.Ziyong Ran Desheng Zheng Yanling Lai Lulu Tian 2020Computers, Materials & Continua2020,,10:2
11The Study on the Anti-corrosion Performance of NiTi Alloy in Human Body Solution with the Fabricating Processes of Laser Irradiation and PDMS Modification显示文摘This paper presents a new and safe method of fabricating super-hydrophobic surface on NiTi Shape Memory Alloy(SMA),which aims to further improve the corrosion resistance performance and biocompatibility of NiTi SMA.The super-hydrophobic surfaces with Water Contact Angle(WCA)of 155.4°±0.9°and Water Sliding Angle(WSA)of 4.4°±1.1°were obtained by the hybrid of laser irradiation and polydimethylsiloxane(PDMS)modification.The forming mechanism was systematically revealed via Scanming Electron Microscopy(SEM)and X-ray Photoelectron Spectroscopy(XPS).The ant-corrosion of samples was investigated in Simulated Body Fluid(SBF)via the potentiodynamie polarization(PDP)and Electrochemical Impedance Spectroscopy(EIS)tests.PDMS super-hydrophobic coatings showed superior anti-corrosion performance.The Ni ions release experiment was also conducted and the corresponding result demonstrated that the super-hydrophobic samplcs effectively inhibited the rclease of Ni ions both in clctrolyte and SBF Besides,biocompaibility was further analyzed,indicating that the prepared super-hydrophobic surfaces present a huge potential advantage in biocompatibility.Chengjuan Yang weiran Cao Zhen Yang Meng Wang Xiubing Jing Yanling Tian 2021Journal of Bionic Engineering2021,18,1:2
12Development and dynamic modelling of a flexure-based Scott–Russell mechanism for nano-manipulation显示文摘Yanling Tian Bijan Shirinzadeh Dawei Zhang Gursel Alici 2008Mechanical Systems and Signal Processing2008,,3:1
13A flexure-based five-bar mechanism for micro/nano manipulation显示文摘TIAN Yanling SHIRINZADEH B ZHANG Dawei 2009Sensors and Actuators A-Physical2009,153,1:1
14Development of a novel flexure -based microgripper for high precision micro -object manipulation 显示文摘Zubir Mohd Nashrul Mohd Shirinazdeh Bijan Tian Yanling 2009Sensors and Actuators A :Physical2009,150,2:1
15Bisphenol A promotes dendritic morphogenesis of hippocampal neurons through estrogen receptor-mediated ERK1/2 signal pathway显示文摘Xiaohong Xu Yang Lu Guangxia Zhang Lei Chen Dong Tian Xiuying Shen Yanling Yang Fanni Dong 2014Chemosphere2014,,:1
16Hybrid process of BAC and sMBR for treating pollu- ted raw water显示文摘Tian Jiayu Chen Zhonglin Yang Yanling 2009Bioresource Technology2009,100,24:1
17Design and dynamics of a 3-DOF flexure-based parallel mechanism for micro/nano manipulation显示文摘TIAN Yanling SHIRINZADEH B ZHANG Dawei 2010Microelectronic Engineering2010,87,2:1
18Stability analysis of diffusive predator-prey model with mod- ified Leslie-Gower and Holling-type III schemes显示文摘Tian Yanling Weng Peixuan 2011Applied Mathematics and Computation2011,218,7:1
19Mild Cytokine Elevation, Moderate CD4^+ T Cell Response and Abundant Antibody Production in Children with COVID-19显示文摘Children with Coronavirus Disease 2019(COVID-19) were reported to show milder symptoms and better prognosis than their adult counterparts, but the difference of immune response against SARS-CoV-2 between children and adults hasn’t been reported. Therefore we initiated this study to figure out the features of immune response in children with COVID-19.Sera and whole blood cells from 19 children with COVID-19 during different phases after disease onset were collected.The cytokine concentrations, SARS-CoV-2 S-RBD or N-specific antibodies and T cell immune responses were detected respectively. In children with COVID-19, only 3 of 12 cytokines were increased in acute sera, including interferon(IFN)-cinduced protein 10(IP10), interleukin(IL)-10 and IL-16. We observed an increase in T helper(Th)-2 cells and a suppression in regulatory T cells(Treg) in patients during acute phase, but no significant response was found in the IFN-cproducing or tumor necrosis factor(TNF)-a-producing CD8?T cells in patients. S-RBD and N IgM showed an early induction, while S-RBD and N IgG were prominently induced later in convalescent phase. Potent S-RBD IgA response was observed but N IgA seemed to be inconspicuous. Children with COVID-19 displayed an immunophenotype that is less inflammatory than adults, including unremarkable cytokine elevation, moderate CD4?T cell response and inactive CD8?T cell response, but their humoral immunity against SARS-CoV-2 were as strong as adults. Our finding presented immunological characteristics of children with COVID-19 and might give some clues as to why children develop less severe disease than adults.Ran Jia Xiangshi Wang Pengcheng Liu Xiaozhen Liang Yanling Ge He Tian Hailing Chang Hao Zhou Mei Zeng Jin Xu 2020Virologica Sinica2020,35,6:1
20Consecutive chemical cleaning of fouled PVC membrane using NaOH and ethanol during ultrafiltration of river water显示文摘Tian Jiayu Chen Zhonglin Yang Yanling 2010Water Res2010,44,1:1
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