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55篇 您的检索式:作者名="Li Yankun"
    题名 作者 年代 出处 被引量
1miR-20a promotes proliferation and invasion by targeting APP in human ovarian cancer cells显示文摘MicroRNAs (miRNAs ) 作为小调整 RNA 的一个班正在出现,并且 miRNAs 的改变在人的癌症的开始和前进被含有。我们的学习在房间线能压制的 OVCAR3 卵巢的癌症显示出 miR-20a 的那抑制,而 miR-20a 的 overexpression 能提高房间长期的增长和侵略。我们也作为 miR-20a 的直接目标基因证实了淀粉的先锋蛋白质(应用软件) 。而且,应用软件表示的抑制能也支持卵巢的癌症房间增长和侵略,它与 miR-20a overexpression 的结果一致。因此,我们断定应用软件的规定是重要机制让 miR-20a 在卵巢的癌症房间支持增长和侵略。Xingxing Fan Yankun Liu Jiechun Jiang Zhuoya Ma Haidong Wu Tao Liu Min Liu Xin Li Hua Tang 2010Acta Biochimica et Biophysica Sinica2010,42,5:20
2Psychological impact of the COVID-19 pandemic on healthcare workers:a cross-sectional study in China显示文摘Background Healthcare workers fighting against the coronavirus disease 2019(COVID-19)pandemic are under tremendous pressure,which puts them at an increased risk of developing psychological problems.Aims This study aimed to investigate the prevalence of psychological problems in different healthcare workers(ie,physicians,medical residents,nurses,technicians and public health professionals)during the COVID-19 pandemic in China and explore factors that are associated with the onset of psychological problems in this population during this public health crisis.Methods A cross-sectional,web-based survey was conducted in February 2020 among healthcare workers during the COVID-19 pandemic.Psychological problems were assessed using the Generalized Anxiety Disorder Scale,Patient Health Questionnaire and Insomnia Severity Index.Logistic regression analyses were used to explore the factors that were associated with psychological problems.Results The prevalence of symptoms of anxiety,depression,insomnia and the overall psychological problems in healthcare workers during the COVID-19 pandemic in China was 46.04%,44.37%,28.75%and 56.59%,respectively.The prevalence of the overall psychological problems in physicians,medical residents,nurses,technicians and public health professionals was 60.35%,50.82%,62.02%,57.54%and 62.40%,respectively.Compared with healthcare workers who did not participate in front-line work,front-line healthcare workers had a higher risk of anxiety,insomnia and overall psychological problems.In addition,attention to negative or neutral information about the pandemic,receiving negative feedback from families and friends who joined front-line work,and unwillingness to join front-line work if given a free choice were three major factors for these psychological problems.Conclusions Psychological problems are pervasive among healthcare workers during the COVID-19 pandemic.Receiving negative information and participating in front-line work appear to be.important risk factors for psychological problems.The psychological health of different healthcare workers should be protected during the COVID-19 pandemic with timely interventions and proper information feedback.Jianyu Que Le Shi Jiahui Deng Jiajia Liu Li Zhang Suying Wu Yimiao Gong Weizhen Huang Kai Yuan Wei Yan Yankun Sun Maosheng Ran Yanping Bao Lin Lu 2020General Psychiatry2020,33,3:8
3Acoustic emission generated during the gas sorption-desorption process in coal显示文摘An experimental system for monitoring the acoustic signals generated in coal during gas sorption and/or desorption was designed and the acoustic signals were observed under different gas pressures. The experimental results show that signals generated by the coal during gas adsorption are attenuated over time. Also, the signals are not continuous but are impulsive. The intensity of the signals generated during gas desorption is far smaller than that observed during adsorption. The signal seen during desorption remains essentially stable. Cycles of sorption and desorption cause acoustic emission signals that exhibit a memory effect, which depends upon the maximum gas pressure the sample was exposed to in earlier cycles. Lower pressures in subsequent cycles, compared to the maximum adsorption pressure in previous cycles, cause both the energy and impulse frequency to be lower than previously. On the contrary, a gas adsorption pressure that exceeds the maximum pressure seen by the sample during earlier cycles causes both the energy and impulse frequency to be high.Ma Yankun Wang Enyuan Xiao Dong Li Zhonghui Liu Jie Gan Lijia 2012International Journal of Mining Science and Technology2012,22,3:5
4Feature extraction method of hyperspectral scattering images for prediction of total viable count in pork meat显示文摘This study aimed to investigate the capabilities of hyperspectral scattering imaging in tandem with Gaussian function,Exponential function and Lorentzian function for rapid and nondestructive determination of total viable count(TVC)in pork meat.Two batches of fresh pork meat was purchased from a local market and stored at 10°C for 1-9 d.Totally 60 samples were used,and several samples were taken out randomly for hyperspectral scattering imaging and conventional microbiological tests on each day of the experiments.The functions of Gaussian,Exponential and Lorentzian were employed to model the hyperspectral scattering profiles of pork meat,and good fitting results were obtained by all three functions between 455 nm and 1000 nm.The Lorentzian function performed best for fitting the hyperspectral scattering profiles of pork meat compared with other functions.Both principal component regression(PCR)and partial least squares regression(PLSR)methods were performed to establish the prediction models.Among all the developed models,the models developed using parameters CE(scattering width parameter of Exponential function)and CL(scattering width parameter of Lorentzian function)by PLSR method gave superior results for predicting pork meat TVC,with RV and RMSEV of 0.92,0.59 log CFU/g,and 0.91,0.61 log CFU/g,respectively.In addition,based on the improved hyperspectral scattering system,parameter c which represented the scattering widths in all three functions gave more accurate prediction results,regardless of the modeling methods(PCR or PLSR).The obtained results demonstrated that hyperspectral scattering imaging combined with the presented data analysis algorithm can be a powerful tool for evaluating the microbial safety of meat in the future.Tao Feifei Peng Yankun Li Yongyu 2015International Journal of Agricultural and Biological Engineering2015,8,4:5
5MiR-214-3p promotes proliferation and inhibits estradiol synthesis in porcine granulosa cells显示文摘Background: Granulosa cells(GCs) proliferation and estradiol synthesis significantly affect follicular development.The miR-214-3p expression in the ovarian tissues of high-yielding sows is higher than that in low-yielding sows,indicating that miR-214-3p may be involved in sow fertility. However, the functions and mechanisms of miR-214-3p on GCs are unclear. This study focuses on miR-214-3p in terms of the effects on GCs proliferation and estradiol synthesis.Results: Our findings revealed that miR-214-3p promotes proliferation and inhibits estradiol synthesis in porcine GCs. MiR-214-3p can increase the percentage of S-phase cells, the number of EdU labeled positive cells, and cell viability. However, E2 concentration was reduced after miR-214-3p agomir treatment. We also found that miR-214-3p up-regulates the expression of cell cycle genes including cell cycle protein B(Cyclin B), cell cycle protein D(Cyclin D), cell cycle protein E(Cyclin E), and cyclin-dependent kinase 4(CDK4) at the transcription and translation levels, but down-regulates the mRNA and protein levels of cytochrome P450 family 11 subfamily A member 1(CYP11A1), cytochrome P450 family 19 subfamily A member 1(CYP19A1), and steroidogenic acute regulatory protein(StAR)(i.e., the key enzymes in estradiol synthesis). On-line prediction, bioinformatics analysis, a luciferase reporter assay, RT-qPCR, and Western blot results showed that the target genes of miR-214-3p in proliferation and estradiol synthesis are Mfn2 and NR5A1, respectively.Conclusions: Our findings suggest that miR-214-3 p plays an important role in the functional regulation of porcine GCs and therefore may be a target gene for regulating follicular development.Shengjie Shi Xiaoge Zhou Jingjing Li Lutong Zhang Yamei Hu Yankun Li Gongshe Yang Guiyan Chu 2021Journal of Animal Science and Biotechnology2021,12,1:3
6Laboratory core flooding experimental systems for CO_2 geosequestration: An updated review over the past decade显示文摘Carbon dioxide(CO_2) geosequestration in deep saline aquifers has been currently deemed as a preferable and practicable mitigation means for reducing anthropogenic greenhouse gases(GHGs) emissions to the atmosphere, as deep saline aquifers can offer the greatest potential from a capacity point of view. Hence,research on core-scale CO_2/brine multiphase migration processes is of great significance for precisely estimating storage efficiency, ensuring storage security, and predicting the long-term effects of the sequestered CO_2 in subsurface saline aquifers. This review article initially presents a brief description of the essential aspects of CO_2 subsurface transport and geological trapping mechanisms, and then outlines the state-of-the-art laboratory core flooding experimental apparatus that has been adopted for simulating CO_2 injection and migration processes in the literature over the past decade. Finally, a summary of the characteristics, components and applications of publicly reported core flooding equipment as well as major research gaps and areas in need of further study are given in relevance to laboratory-scale core flooding experiments in CO_2 geosequestration under reservoir conditions.Yankun Sun Qi Li Duoxing Yang Xuehao Liu 2016Journal of Rock Mechanics and Geotechnical Engineering2016,8,1:3
7Hepatitis B virus evades immune recognition via RNA adenosine deaminase ADAR1-mediated viral RNA editing in hepatocytes显示文摘HBV is considered as a“stealth”virus that does not invoke interferon(IFN)responses;however,the mechanisms by which HBV bypasses innate immune recognition are poorly understood.In this study,we identified adenosine deaminases acting on RNA 1(ADAR1),which is a key factor in HBV evasion from IFN responses in hepatocytes.Mechanically,ADAR1 interacted with HBV RNAs and deaminated adenosine(A)to generate inosine(I),which disrupted host immune recognition and thus promoted HBV replication.Loss of ADAR1 or its deficient deaminase activity promoted IFN responses and inhibited HBV replication in hepatocytes,and blocking the IFN signaling pathways released the inhibition of HBV replication caused by ADAR1 deficiency.Notably,the HBV X protein(HBx)transcriptionally promoted ADAR1 expression to increase the threshold required to trigger intrinsic immune activation,which in turn enhanced HBV escape from immune recognition,leading to persistent infection.Supplementation with 8-azaadenosine,an ADAR1 inhibitor,efficiently enhanced liver immune activation to promote HBV clearance in vivo and in vitro.Taken together,our results delineate a molecular mechanism by which HBx promotes ADAR1-derived HBV immune escape and suggest a targeted therapeutic intervention for HBV infection.Liyuan Wang Yang Sun Xiaojia Song Zehua Wang Yankun Zhang Ying Zhao Xueqi Peng Xiaodong Zhang Chunyang Li Chengjiang Gao Nailin Li Lifen Gao Xiaohong Liang Zhuanchang Wu Chunhong Ma 2021Cellular & Molecular Immunology2021,18,8:2
8Separate Dimming Controlling and Data Transmission for an Indoor Visible Light Communication System显示文摘Simultaneous dimming controlling and data transmission are usually required in a white LED based indoor visible light communication system.However,the diming controlling of LED normally interferes the data transmission due to the modulation nonlinearity of LED.In order to solve this problem,a scheme by separating the LEDs for the functions of dimming control and data transmission respectively is proposed in this paper.In the scheme,the LEDs used for dimming control function are driven by a dc amplified circuit,and the LEDs for data transmission are driven by a digital modulation circuit respectively.In this way,the modulation distortion to the data signal caused by the modulation nonlinearity can be avoided even if the dimming is at high level dc driven current.The proof-of-concept experiment of a 2.5Mbit/s visible light communication system demonstrates that the dimming controlling and data transmission can be realized simultaneously in a simple way,and the data transmission is not affected by the dimming controlling function.Compared to previous methods,the scheme in this paper is simpler and cost effective,and makes sense when high rate data is transmitted in a visible light communication system.LIU Xiang YANG Aiying LI Yankun FENG Lihui 2015China Communications2015,12,3:2
9D609 protects retinal pigmented epithelium as a potential therapy for age-related macular degeneration显示文摘Accumulated oxidative damage may lead to irreversible retinal pigmented epithelium(RPE)cell death,which is considered to be the primary cause of dry age-related macular degeneration(AMD),leading to blindness in the elderly.However,an effective therapy for this disease is lacking.Here,we described a robust high-content screening procedure with a library of 814 protective compounds and found that D609 strongly protected RPE cells from sodium iodate(SI)-induced oxidative cell death and prolonged their healthy survival.D609 effectively attenuated excessive reactive oxygen species(ROS)and prevented severe mitochondrial loss due to oxidative stress in the RPE cells.Surprisingly,the potent antioxidative effects of D609 were not achieved through its own reducibility but were primarily dependent on its ability to increase the expression of metallothionein.The injection of this small water-soluble molecule also showed an explicit protective effect of the RPE layer in an SI-induced AMD mouse model.These findings suggested that D609 could serve as a novel antioxidative protector of RPE cells both in vitro and in vivo and unveiled a novel antioxidative mechanism of D609,which may ultimately have clinical applications for the treatment of AMD.Bowen Wang Li Wang Sijie Gu Yankun Yu Huaxing Huang Kunlun Mo He Xu Fanzhu Zeng Yichen Xiao Lulu Peng Chunqiao Liu Nan Cao Yizhi Liu Jin Yuan Hong Ouyang 2020Signal Transduction and Targeted Therapy2020,5,1:2
10Kinetics and thermodynamics study for electrosorption of NaCl onto carbon nanotubes and carbon nanofibers electrodes显示文摘Haibo Li Likun Pan Yanping Zhang Linda Zou Changqing Sun Yankun Zhan Zhuo Sun 2009Chemical Physics Letters2009,,1:2
11A variable selection method based on uninformative variable elimination for multivariate calibration of near-infrared spectra显示文摘Wensheng Cai Yankun Li Xueguang Shao 2007Chemometrics and Intelligent Laboratory Systems2007,,2:2
12Potential prediction of the microbial spoilage of beef using spatially resolved hyperspectral scattering profiles显示文摘Yankun Peng Jing Zhang Wei Wang Yongyu Li Jianhu Wu Hui Huang Xiaodong Gao Weikang Jiang 2010Journal of Food Engineering2010,,2:1
13A variable selection method based on uninformative variable elimination formultivariate calibration of near - infrared spectra 显示文摘Wensheng Cai Yankun Li Xueguang Shao 2008Chemometrics and Intelligent Laboratory Systems2008,90,:1
14Simultaneous determination of tenderness and Escherichia coli contamination of pork using hyperspectral scattering technique显示文摘Feifei Tao Yankun Peng Yongyu Li Kuanglin Chao Sagar Dhakal 2011Meat Science2011,,3:1
15Detection of chlorpyrifos in apples using gold nanoparticles based on surface enhanced Raman spectroscopy显示文摘In this study,gold nanoparticles(AuNPs)were synthesized for rapid and sensitive characterization and quantification of chlorpyrifos in apples.Min-max signal adaptive zooming and second derivative transformation method were adopted to pre-process Raman spectral signal.The min-max signal adaptive zooming method showed a higher correlation coefficient than derivative transformation when developing linear calibration curve between chlorpyrifos pesticide and Raman spectral peak intensity.The present method had a high reproducibility with the relative standard deviation less than 15%.Regression models showed a good linear relationship(R=0.962)between intensity of characteristic spectral peaks(at 677 cm-1)and chlorpyrifos concentration on whole apples ranging from 0.13 mg/kg to 7.59 mg/kg.The application of surface enhancement Raman spectroscopy(SERS)detected chlorpyrifos pesticide to the detection limit of 0.13 mg/kg,which can be applied further for lower concentration in the future.The method presented in this study can provide a way-out for detection of pesticide residue in whole apple to trace amount.Zhai Chen Li Yongyu Peng Yankun Xu Tianfeng 2015International Journal of Agricultural and Biological Engineering2015,8,5:1
16Potential prediction of the microbial spoilage of beef using spatially resolved hyperspectral scattering profiles显示文摘Yankun Peng Jing Zhang Wei Wang Yongyu Li Jianhu Wu Hui Huang Xiaodong Gao Weikang Jiang 2010Journal of Food Engineering2010,,2:1
17Energy management strategy for fuel cell/battery/ultracapacitor hybrid vechicle based on fuzzy logic显示文摘Li Qi Chen Weirong Li Yankun 0,,01:1
18A variable selection method based on uninformative variable elimination for multivariate calibration of near-infrared spectra 显示文摘Cai Wensheng Li Yankun Shao Xueguang 2008Chemometrics and Intelligent Laboratory Systems2008,90,2:1
19Energy management strategy for fuel cell/battery/ultracapacitor hybrid vehicle based on fuzzy logic显示文摘LI Qi CHEN Weirong LI Yankun 2012International Journal of Electrical Power and Energy Systems2012,43,1:1
20Potential prediction of the microbial spoilage of beef using spatially resolved hyperspectral scattering profiles显示文摘Yankun Peng Jing Zhang Wei Wang Yongyu Li Jianhu Wu Hui Huang Xiaodong Gao Weikang Jiang 2010Journal of Food Engineering2010,,2:1
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