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导师支持对中医硕士专业学位研究生临床科研能力的影响

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中医教育 2024年第3期43卷 13-20页

作者：莫捷赵琛梁佳李磊程璠解华姜幼明张立平北京中医药大学研究生院北京100029 中国中医科学院研究生院北京100700

目的调查分析导师支持对中医硕士专业学位研究生临床科研能力的影响及不同动机和科研效能感在影响途径中发挥的作用。方法采用便利抽样法于2023年4月14—20日对北京市8所中医规培基地的中医硕士专业学位研究生进行问卷调查,被调查者填... 详细信息

目的调查分析导师支持对中医硕士专业学位研究生临床科研能力的影响及不同动机和科研效能感在影响途径中发挥的作用。方法采用便利抽样法于2023年4月14—20日对北京市8所中医规培基地的中医硕士专业学位研究生进行问卷调查,被调查者填写导师支持量表、动机量表、科研效能感量表和临床科研能力自评表,并使用偏最小二乘法-结构方程模型分析数据。结果调查获得404例合格样本。结构方程模型各项参数符合标准,模型的直接路径结果显示:导师支持正向预测临床科研能力(β=0.349,P<0.01)和自主动机(β=0.512,P<0.01),负向预测受控动机(β=-0.338,P<0.05);自主动机正向预测临床科研能力(β=0.187,P<0.05)和科研效能感(β=0.760,P<0.01),负向预测受控动机(β=-0.479,P<0.01);受控动机负向预测科研效能感(β=-0.134,P<0.05);科研效能感正向预测临床科研能力(β=0.306,P<0.01)。Bootstrap结果显示:导师支持对临床科研能力的直接效应占总效应的59.32%,间接效应占总效应的40.68%,一部分间接效应通过两条链式中介路径传递,分别为:导师支持→自主动机→科研效能感→临床科研能力(占总效应的20.85%)、导师支持→受控动机→科研效能感→临床科研能力(占总效应的2.2%)。结论在中医硕士专业学位研究生临床科研能力的培养过程中,导师支持是重要的外部支持力量;对于学生自身来说,自主动机和受控动机的阴阳平衡及较高的科研效能感可以提高培养效率,更加充分地发挥导师支持的作用。培养单位既要重视导师的能力提升和指导风格的转变,也要关注学生动机和效能感的情况,并通过培训和考核全方位地提升导师在学术、自主和人际关系3个方面的指导水平。

关键词：导师支持自我决定理论科研效能感中医硕士专业学位研究生结构方程模型

Microbial production of L-malate from renewable non-food feedstocks

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Chinese Journal of Chemical Engineering 2021年第2期34卷 105-111页

作者： youming jiang Xiaohan Ye Tianwen Zheng Weiliang Dong Fengxue Xin jiangfeng Ma Min jiang State Key Laboratory of Materials-Oriented Chemical Engineering College of Biotechnology and Pharmaceutical EngineeringNanjing Tech UniversityNanjing 211800China

L-malate is an intermediate of the tricarboxylic acid cycle which is naturally occurred in various microorganisms,and it has been widely applied in polymer,beverage and food,textile,agricultural and pharmaceutical *** by the pursuit of a sustainable economy,microbial production of L-malate has received much attention in last *** this review,we focus on the utilization of wastes and/or byproducts as feedstocks for the microbial production of ***,we present the recent developments on the natural or engineered metabolic pathways that dedicate to the biosynthesis of L-malate,and also provide a comprehensive discussions on developing high-efficient ***,the recent achievements in microbial production of L-malate from various carbon sources were concluded and ***,some abundant non-food feedstocks which have been used for microbial production of other chemicals were reviewed,as they may be potential candidate feedstock for L-malate production in ***,we outlined the major challenges and proposed further improvements for the production of L-malate.

关键词： L-malate Renewable feedstock Microbial fermentation Bioeconomy C4 dicarboxylic acid

基于均匀试验的水力旋流器工作效率分析及参数优化

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铁道科学与工程学报 2022年第8期19卷 2428-2436页

作者：姜佑明中铁二十五局集团有限公司广东广州510600

针对砂石骨料加工湿法工艺出现颗粒级配等指标不稳定问题,利用某隧道洞渣再利用项目现场的2组4台直径尺寸为0.3 m的水力旋流器,采用均匀试验设计法对入料压力、进口浓度及底流口喷嘴尺寸3个因素变量设计10组试验,开展砂水混合物固液分... 详细信息

针对砂石骨料加工湿法工艺出现颗粒级配等指标不稳定问题,利用某隧道洞渣再利用项目现场的2组4台直径尺寸为0.3 m的水力旋流器,采用均匀试验设计法对入料压力、进口浓度及底流口喷嘴尺寸3个因素变量设计10组试验,开展砂水混合物固液分离与细砂回收的工作效率关联试验分析与生产参数优化。通过保持旋流器结构参数基本不变,将预处理后级配连续的机制砂和清水按设计浓度配比均匀混合,经渣浆泵和管道等辅助设施注入水力旋流器中,通过调节3个因素变量,比较不同入料压力、进口浓度与底流口直径尺寸对旋流器细砂回收效果的关系,以及对机制砂参数指标的影响。对试验数据进行回归分析,结果表明:入料压力对旋流器工作效率的影响最大,进口浓度最小,在合适范围内,均能正面促进工作效率的提升,但需要注意干涉沉降效应、底流拥挤和异常磨损等异常情况。通过分析试验规律,对水力旋流器生产参数进行优化:设置组1入料压力0.08 MPa,开启旋流器2个,底流口喷嘴直径均为20 mm;组2入料压力0.20 MPa,开启旋流器1个,底流口喷嘴直径为40 mm。机制砂细度模数数值稳定在2.9±0.1,石粉含量均在3%以下,获得了较为理想的工作效率,为类似生产现场提供有益参考。

关键词：均匀试验设计洞渣水力旋流器细砂回收压力浓度

Diagnostic Method for Beam Position Monitor Based on Clustering by Fast Search and Find of Density Peaks

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Journal of Shanghai Jiaotong university(Science) 2024年第3期29卷 457-462页

作者：姜瑞涛杨星邓又铭冷用斌 Shanghai Synchrotron Radiation Facility Shanghai Advanced Research InstituteChinese Academy of SciencesShanghai 201204China Shanghai Institute of Applied Physics Chinese Academy of SciencesShanghai 201800China

Beam position monitors(BPMs)are important to monitor the beam moving *** the beam's normal motion is an important mission for Shanghai Synchrotron Radiation *** diagnostic analysis is an important way to accomplish this *** paper develops a new method based on clustering analysis to diagnose the healthy of BPMs with basic running data,i.e.,the β oscillation of X and Y directions and noise *** analysis results showed that all beam position monitors(140 BPMs)can be classified into three groups:normal group,worse performance group,and fault group,*** addition,the abnormal BPMs(including worse performance)could be *** new method showed its ability to handle faulty BPMs and it could instruct daily *** the other hand,it will be a useful supplement for data analysis in accelerator physics.

关键词： synchrotron radiation beam position monitor(BPM) βoscillation beam position monitor noise beam position monitor troubleshooting

An improved initial rotor position estimation method using high-frequency pulsating voltage injection for PMSM

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Defence Technology（防务技术） 2024年第3期33卷 19-29页

作者： Yang jiang Ming Cheng School of Electrical Engineering Southeast UniversityNanjing 210096China

High frequency pulsating voltage injection method is a good candidate for detecting the initial rotor position of permanent magnet synchronous ***,traditional methods require a large number of filters,which leads to the deterioration of system stability and dynamic *** order to solve these problems,a new signal demodulation method is proposed in this *** proposed new method can directly obtain the amplitude of high-frequency current,thus eliminating the use of filters,improving system stability and dynamic performance and saving the work of adjusting filter *** addition,a new magnetic polarity detection method is proposed,which is robust to current measurement ***,experiments verify the effectiveness of the method.

关键词： Initial position detection Signal demodulation algorithm Magnetic polarity detection Filter elimination

Capturing Plateau-Rayleigh instability in silver nanowires via ultrafast electron microscopy

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Nano Research 2024年第9期17卷 8402-8407页

作者： Shuai jiang Volkan Ortalan Department of Materials Science and Engineering University of ConnecticutStorrsCT 06269USA

Understanding the structural stability of nanomaterials such as nanowires is imperative for their practical ***,using single-shot ultrafast transmission electron microscopy,we captured the Plateau-Rayleigh instability behavior of silver nanowires decomposing into silver nanoparticles upon laser irradiation on nanosecond time *** found that this dynamic process can be accelerated by a factor of 10 through increasing the peak laser fluence from 6.03 to 14.60 mJ/cm^(2).Moreover,by comparing the laser fluence required to initiate the Plateau-Rayleigh instability in silver nanowires on carbon and Formvar membranes,it was found that the main driving force for the Plateau-Rayleigh instability in this study was substrate *** element analysis and molecular dynamics simulations are also applied to estimate the temperature jump of the nanowires and atomistic behavior,*** addition,the complex motions of silver nanowires under laser irradiation were systematically investigated by combining the results of ultrafast transmission electron microscopy with scanning electron microscopy characterizations and were determined to be related to nanowire-membrane interactions or pre-existing stresses on the nanowires,which in turn demonstrated the potential of ultrafast transmission electron microscopy for the characterization of nanomaterials and devices under extreme conditions.

关键词： silver nanowire Plateau-Rayleigh instability ultrafast transmission electron microscopy molecular dynamics simulation

Advances in Triboelectric Nanogenerators for Blue Energy Harvesting and Marine Environmental Monitoring

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Engineering 2024年第2期33卷 204-224页

作者： Yang jiang Xi Liang Tao jiang Zhong Lin Wang CAS Center for Excellence in Nanoscience Beijing Key Laboratory of Micro–Nano Energy and SensorsBeijing Institute of Nanoenergy and NanosystemsChinese Academy of SciencesBeijing 101400China School of Nanoscience and Technology University of Chinese Academy of SciencesBeijing 100049China Georgia Institute of Technology AtlantaGA 30332USA

Blue energy,which includes rainfall,tidal current,wave,and water-flow energy,is a promising renewable resource,although its exploitation is limited by current technologies and thus remains *** form of energy is mainly harvested by electromagnetic generators(EMGs),which generate electricity via Lorenz force-driven electron *** nano genera tors(TENGs)and TENG networks exhibit superiority over EMGs in low-frequency and high-entropy energy harvesting as a new approach for blue energy harvesting.A TENG produces electrical outputs by adopting the mechanism of Maxwell’s displacement *** date,a series of research efforts have been made to optimize the structure and performance of TENGs for effective blue energy harvesting and marine environmental *** the great progress that has been achieved in the use of TENGs in this context so far,continuous exploration is required in energy conversion,device durability,power management,and environmental *** review reports on advances in TENGs for blue energy harvesting and marine environmental *** introduces the theoretical foundations of TENGs and discusses advanced TENG prototypes for blue energy harvesting,including TENG structures that function in freestanding and contact-separation *** enhancement strategies for TENGs intended for blue energy harvesting are also ***,marine environmental applications of TENGs based on blue energy harvesting are discussed.

关键词： Triboelectric nanogenerator TENG networks Blue energy Energy harvesting Ocean sensors

Highly homogeneous zero-index metamaterials make devices more compact and perform better

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Light(Science & Applications) 2024年第5期13卷 806-807页

作者： Wei-Xiang jiang State Key Laboratory of Millimeter Waves School of Information Science and EngineeringSoutheast University210096 NanjingChina

A highly homogeneous microwave zero-index metamaterial based on high-permittivity SrTiO3 ceramics is demonstrated to realize the small-aperture high-directivity *** a novel technique is a remarkable step forward to de... 详细信息

关键词： ceramics SrTiO3 Highly

Drug-Target Interactions Prediction Based on Signed Heterogeneous Graph Neural Networks

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Chinese Journal of Electronics 2024年第1期33卷 231-244页

作者： Ming CHEN Yajian jiang Xiujuan LEI Yi PAN Chunyan JI Wei jiang College of Information Science and Engineering Hunan Normal University School of Computer Science Shaanxi Normal University Faculty of Computer Science and Control Engineering Shenzhen Institute of Advanced TechnologyChinese Academy of Sciences Computer Science Department BNU-HKBU United International College

Drug-target interactions(DTIs) prediction plays an important role in the process of drug *** computational methods treat it as a binary prediction problem, determining whether there are connections between drugs and targets while ignoring relational types information. Considering the positive or negative effects of DTIs will facilitate the study on comprehensive mechanisms of multiple drugs on a common target, in this work, we model DTIs on signed heterogeneous networks, through categorizing interaction patterns of DTIs and additionally extracting interactions within drug pairs and target protein pairs. We propose signed heterogeneous graph neural networks(SHGNNs), further put forward an end-to-end framework for signed DTIs prediction, called SHGNN-DTI,which not only adapts to signed bipartite networks, but also could naturally incorporate auxiliary information from drug-drug interactions(DDIs) and protein-protein interactions(PPIs). For the framework, we solve the message passing and aggregation problem on signed DTI networks, and consider different training modes on the whole networks consisting of DTIs, DDIs and PPIs. Experiments are conducted on two datasets extracted from Drug Bank and related databases, under different settings of initial inputs, embedding dimensions and training modes. The prediction results show excellent performance in terms of metric indicators, and the feasibility is further verified by the case study with two drugs on breast cancer.

关键词： Drugs Training Proteins Measurement Message passing Prediction methods Graph neural networks