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Phyton-International Journal of Experimental Botany 2020年第4期89卷 883-891页

作者： Jiali Wei Ying Zou Ping Li xiaojun yuan Shanghai Key Laboratory of Bio-Energy Crops Research Center for Natural ProductsPlant Science CenterSchool of Life SciencesShanghai UniversityShanghai200444China

TiO_(2) nanoparticles(nano-TiO_(2))are widely used in the world,and a considerable amount of nano-TiO_(2) is released into the environment,with toxic effects on *** the various species of higher plants,growth,including seed germination,root elongation,and biomass accumulation,is affected by nano-TiO_(2).However,the underlying molecular mechanisms remain to be *** this study,we observed that nano-TiO_(2) promoted root elongation in a dose-dependent ***,we found that nano-TiO_(2) elevated auxin accumulation in the root tips of the auxin marker lines DII-VENUS and DR5::GUS,and,correspondingly,quantitative real-time PCR analysis revealed that nano-TiO_(2) increased the expression levels of auxin biosynthesis-and transport-related *** fluorescence observation using transgenic PIN2-GFP indicated that nano-TiO_(2) promoted root growth by inducing PIN2 ***,we propose that nano-TiO_(2) promote root growth in Arabidopsis thaliana by altering the expression levels of auxin biosynthesis-and transport-related genes.

关键词： Nanoparticles nano-TiO_(2) root length auxin PIN2 auxin-related genes

Reconfigurable Intelligent Surface Assisted D2D Underlay Communications:A Two-Timescale Optimization Design

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Journal of Communications and Information Networks 2020年第4期5卷 369-380页

作者： Chang Cai Huiyuan Yang xiaojun yuan Ying-Jun Angela Zhang Yi Liu Center for Intelligent Networking and Communications(CINC) University of Electronic Science and Technology of China(UESTC)Chengdu 611731China Department of Information Engineering The Chinese University of Hong KongHong Kong 999077China

The performance of a device-to-device(D2D)underlay communication system is limited by the co-channel interference between cellular users(CUs)and D2D *** address this challenge,a reconfigurable intelligent surface(RIS)aided D2D underlay system is studied in this paper.A two-timescale optimization scheme is proposed to reduce the required channel training and feedback overhead,where transmit beamforming at the base station(BS)and power control at the D2D transmitters are adapted to instantaneous effective channel state information(CSI);and the RIS phase shifts are adapted to slow-varying channel *** on the two-timescale optimization scheme,we aim to maximize the D2D ergodic weighted sum-rate(WSR)subject to a given outage probability constrained signal-to-interference-plus-noise ratio(SINR)target for each *** two-timescale problem is decoupled into two sub-problems,and the two sub-problems are solved *** results verified that the two-timescale based optimization performs better than two baselines,and also demonstrated a favourable trade-off between system performance and CSI overhead.

关键词： reconfigurable intelligent surface(RIS) device-to-device(D2D)underlay communication twotimescale optimization

Quantitative trait locus analysis of lateral branch-related traits in cucumber(Cucumis sativus L.)using recombinant inbred lines

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Science China(Life Sciences) 2008年第9期51卷 833-841页

作者： JIANG Su yuan xiaojun PAN JunSong HE HuanLe CAI Run School of Agriculture and Biology Shanghai Jiaotong UniversityShanghai 200240China

A group of 224 recombinant inbred lines (RILs) was derived from a narrow cross between 2 cucumber (Cucumis sativus L.) lines, namely, S94 (Northern China type with weak lateral branch growth potential and early lateral branch sprouting time) and S06 (Northern European type with strong lateral branch growth potential and late lateral branch sprouting time). These lines were then used for investigating lateral branch-related traits. A total of 36 quantitative trait loci (QTLs) were detected for the following 4 lateral branch-related traits: lateral branch average length (LBAL), lateral branch total length (LBTL), lateral branch number (LBN), and first lateral branch node (FLBN). Further, each QTL explained 3.1% (lbtl2.1, spring) to 32.3% (lbn2.3, spring) of the observed phenotypic variance. Eleven QTLs (lbal1.1, lbtl1.1, lbn1.2, flbn1.2, etc.) for different traits were found to be clustered on the e23m18d-ME23EM6c section (7.4 cM) of linkage group (LG) 1; further, 15 QTLs (lbal2.1, lbtl2.1, lbn2.1, flbn2.1, etc.) were found to be clustered on the S94A1-ME4SA4a section (13.9 cM) of LG2. Twenty-one QTLs explained more than 10% of the phenotypic variance. Moreover, lbtl1.3 (autumn, 26.2%, logarithm of odds (LOD) = 17.4; spring, 26.9%, LOD = 17.9) had stable position and contribution in both seasons. Several se-quence-anchor markers (CMBR40, F, CS30, S94A1, CSWTA11B, etc.) were closely linked with some QTLs for LBAL, LBTL, LBN, and FLBN, which can be used for the marker-assisted selection to improve the plant architecture in cucumber breeding.

关键词： Cucumis sativus L. lateral branching recombinant inbred lines quantitative trait loci

A SYSTEMATIC ARCHITECTURE AND MODELING OF VIRTUAL MANUFACTURING AND MEASURING CELL

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Chinese Journal of Mechanical Engineering 1999年第4期12卷 247-253页

作者： Yao Yingxue Li xiaojun yuan Zhejun Dept. of Mechanical Engineering, Harbin Institute of Technology Harbin Inst of Technology Harbin China

The concept of virtual manufacturing and measuring cell (VMMC) is proposed, the systematic architecture of the VMMC is established and two key problems: the error fusion in machining and the reconstructable modeling of workpiece during virtual manufacturing and measuring, are discussed. An actual VMMC is presented as an example and its modularized frame is introduced.

关键词： Virtual manufacturing Virtual measuring Modeling Transform matrix

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侧加热器功率对电饭煲烹饪米饭品质影响研究

家电科技 2024年第4期4卷 67-71页

作者：袁小钧乐晓辉楼杭颖陈侠何琼松下家电(中国)有限公司浙江杭州310018

为改善发热盘加热式电饭煲炊饭不均匀的问题,通过锅内热对流、含水率、炊饭不均匀率和感官评价等指标探讨侧加热器功率对米饭品质的影响。在普通的5 L电饭煲本体(P=750 W底功率+不同的侧加热器功率)上验证,实验表明侧加热器功率40 W时... 详细信息

为改善发热盘加热式电饭煲炊饭不均匀的问题,通过锅内热对流、含水率、炊饭不均匀率和感官评价等指标探讨侧加热器功率对米饭品质的影响。在普通的5 L电饭煲本体(P=750 W底功率+不同的侧加热器功率)上验证,实验表明侧加热器功率40 W时米饭均匀度最好,为6.85%;侧加热器功率20 W时的米饭均匀度与40 W时相似,为7.96%;侧加热器功率20 W和40 W时热对流测试锅内各点平滑度最好;而侧加热器功率80 W时米饭样品感官评价得分最高。研究结果显示,针对5 L本体、750 W底功率的电饭煲,匹配20 W~40 W的侧加热器对米饭品质改善效果最好。

关键词：功率侧加热器米饭品质电饭煲

基于连通域分割与SVM的城轨百米标检测与识别算法

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控制与信息技术 2024年第4期 82-89页

作者：袁小军田野苏震刘昕武李晨张慧源株洲中车时代电气股份有限公司湖南株洲412001

城轨道路沿线的百米标志牌是统计行车里程、辅助建图定位的重要参考信息,对其的检测与识别将有助于轨道交通车辆的智能驾驶与维护。文章基于传统的检测与识别技术归纳总结了一种百米标检测识别通用算法,其基于收缩算法进行检测定位,再... 详细信息

城轨道路沿线的百米标志牌是统计行车里程、辅助建图定位的重要参考信息,对其的检测与识别将有助于轨道交通车辆的智能驾驶与维护。文章基于传统的检测与识别技术归纳总结了一种百米标检测识别通用算法,其基于收缩算法进行检测定位,再基于模板匹配进行百米标上的数字识别;同时,对通用算法进行了优化改进,提出了一种基于连通域分割检测与支持向量机(SVM)数字识别的百米标检测识别算法。首先,在对图像进行二值化、形态学填充等预处理后,基于连通域分割剔除噪点斑块并完成百米标定位;然后,对定位得到的百米标进行背景噪点剔除、倾斜校正及字符分割;最后,再将获得的字符输入SVM模型进行识别。实验结果表明,优化后的算法对于百米标的检测准确率提升了约34.4个百分点,识别准确率提高了约25.6个百分点。

关键词：城市轨道交通百米标标志牌检测连通域分割数字识别 SVM

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磁共振脂肪定量技术分析腹腔内脏脂肪含量与2型糖尿病关系的Meta分析

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现代医学 2024年第5期52卷 687-694页

作者：王金凤王海静罗琳陈强原小军内蒙古科技大学包头医学院内蒙古包头014010 内蒙古科技大学包头医学院第一附属医院医学影像科内蒙古包头014010

目的:基于Meta分析评估磁共振脂肪定量技术在腹腔内脏脂肪含量与2型糖尿病(T2DM)关系中的效能,进而探讨以腹腔内脏脂肪含量预测T2DM发病的可行性。方法:检索PubMed、Embase、The Cochrane Library、知网和万方数据库自1995年1月1日至202... 详细信息

目的:基于Meta分析评估磁共振脂肪定量技术在腹腔内脏脂肪含量与2型糖尿病(T2DM)关系中的效能,进而探讨以腹腔内脏脂肪含量预测T2DM发病的可行性。方法:检索PubMed、Embase、The Cochrane Library、知网和万方数据库自1995年1月1日至2023年3月31日关于腹腔内脏脂肪与T2DM关系的中英文文献,依据纳入及排除标准独立筛选文献、提取数据并进行质量评估。最后采用STATA 12.0软件进行统计分析并绘制森林图。采用亚组分析的方法寻找异质性来源,绘制漏斗图以评估是否存在发表偏倚。结果:共纳入16篇文献。共1814例受试者,其中T2DM组759例,健康对照(HC)组1055例。T2DM患者的胰腺及肝脏异位脂肪沉积含量高于健康人群,且腹腔内脏脂肪含量亦高于健康人群。T2DM组患者的胰腺脂肪分数(PFF)[加权均数差(WMD)=2.71,95%CI 2.01~3.41]、肝脏脂肪分数(HFF)(WMD=6.03,95%CI 4.10~7.95)、腹腔内脏脂肪面积(VFA)(WMD=77.71,95%CI 39.98~115.43)及皮下脂肪组织面积(SFA)(WMD=27.72,95%CI 6.76~48.69)均大于HC组,且组间差异有统计学意义(P<0.01)。结论:T2DM患者的腹腔内脏脂肪组织、皮下脂肪组织、肝脏及胰腺脂肪含量明显高于健康人群。磁共振脂肪定量技术为定量测量腹腔内脏脂肪及异位脂肪沉积提供了一种有效的无创性方法指标,在未来用于脂肪定量科研中具有较大的发展前景。

关键词： 2型糖尿病脂肪核磁共振 Meta分析

The BHLH Transcriptional Factor PIF4 Competes with the R2R3-MYB Transcriptional Factor MYB75 to Fine-Tune Seeds Germination under High Glucose Stress

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Phyton-International Journal of Experimental Botany 2021年第5期90卷 1387-1400页

作者： Xiaoli Li Shiyan Lu Yaru Yang Wenjie Wei Jiali Wei xiaojun yuan Ping Li Shanghai Key Laboratory of Bio-Energy Crops School of Life SciencesShanghai UniversityShanghai200444China

It is known that the high level of sugar including glucose suppresses seed germination through ABA ***5 is an essential component to mediate ABA-dependent seed germination inhibition,but underlying mechanism needs more *** study demonstrated the PIF4 activated the expression of ABI5 to suppress seed germination in *** we reported that PIF4 also mediated the seed germination inhibition through ABI5 under high concentration of glucose ***,we found that PIF4 interacted with PAP1,the central factor to control anthocyanin *** interaction was confirmed in vitro and in *** and physiological analysis revealed that PAP1 bond the promoter of ABI5 to suppress its expression,thus enhanced seed germination under high concentration of glucose ***,PAP1 competed with PIF4 to antagonize the activation of PIF4 on ABI5 expression,thus promoted seed germination under high glucose *** these,we uncover a novel role for PIF4 and PAP1 in controlling seed germination under high glucose treatment,and reveal their antagonistic mechanism by which coordinates ABI5 expression to control seed germination in response to the glucose signal.

关键词： Seeds germination glucose MYB75 PIF4 ABI5

脉冲式心电门控与Force CT 70 kV前瞻性大螺距技术在冠状动脉成像中的对比研究

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影像研究与医学应用 2024年第19期8卷 7-10页

作者：王云玲罗琳穆紫薇罗成茂原小军内蒙古科技大学包头医学院第一附属医院影像科内蒙古包头014010

目的:探讨脉冲式心电门控与Force CT 70 kV前瞻性大螺距冠状动脉成像对辐射剂量和图像质量的影响。方法:搜集2022年1月—2023年1月在内蒙古科技大学包头医学院第一附属医院就诊的49例行256层iCT 100 kV脉冲式心电门控冠状动脉CT血管成像... 详细信息

目的:探讨脉冲式心电门控与Force CT 70 kV前瞻性大螺距冠状动脉成像对辐射剂量和图像质量的影响。方法:搜集2022年1月—2023年1月在内蒙古科技大学包头医学院第一附属医院就诊的49例行256层iCT 100 kV脉冲式心电门控冠状动脉CT血管成像(CCTA)的患者和37例行Force CT 70 kV前瞻性大螺距CCTA的患者资料,分别记为A组和B组,共86例。比较两组患者的心率、各段冠状动脉CT值、信噪比、对比噪声比及辐射剂量。结果:两组患者的心率、各段冠状动脉CT值、信噪比、对比噪声比及辐射剂量的差异有统计学意义(P<0.05)。结论:Force CT 70 kV前瞻性大螺距冠状动脉成像比脉冲式心电门控100 kV管电压下冠脉成像对心率的要求减低,70 kV管电压条件下可以降低辐射剂量,而图像质量仍可满足诊断要求。

关键词：双源CT 冠状血管造影术自适应前瞻性心电门控辐射剂量

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