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基于案例引导式的自我学习联合情景教学在五年制本科生妇产超声教学中的应用

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中国卫生产业 2024年第4期21卷 175-178页

作者：宋文君新疆石河子大学第一附属医院超声医学科新疆维吾尔自治区石河子832000

目的探究基于案例引导式的自我学习联合情景教学在五年制本科生妇产超声教学中的应用效果。方法将2021年1月—2022年1月在新疆石河子大学第一附属医院超声医学科妇产超声教学时接受传统教学的40名五年制本科生纳入对照组,将2022年2月—2... 详细信息

目的探究基于案例引导式的自我学习联合情景教学在五年制本科生妇产超声教学中的应用效果。方法将2021年1月—2022年1月在新疆石河子大学第一附属医院超声医学科妇产超声教学时接受传统教学的40名五年制本科生纳入对照组,将2022年2月—2023年2月在妇产超声教学时接受基于案例引导式的自我学习联合情景教学的40名五年制本科生纳入观察组。比较两组本科生的理论和技能考试成绩、教学效果、教学满意度。结果观察组的理论和技能考试成绩、教学效果各项评分、教学总满意度均高于对照组,差异有统计学意义(P均<0.05)。结论基于案例引导式的自我学习联合情景教学可提高五年制本科生妇产超声教学效果,提高其教学满意度。

关键词：本科生妇产科超声诊断学案例引导自我学习情景教学

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刺五加猫爪子超微粉啤酒发酵工艺优化

食品科技 2024年第3期49卷 89-95页

作者：秦玉欣李建勋马祖宣李浩然宋文军天津商业大学生物技术与食品科学学院天津300134 贵州国台酒业集团股份有限公司贵州仁怀564501 贵州国台酒业集团研究院天津300410

以刺五加、猫爪子超微粉和麦芽为原料,酿造一种新型刺五加猫爪子超微粉啤酒。以酒精度和感官评分为指标,采用单因素试验分别考察超微粉浸提液加入量、浸提液加入阶段和主发酵温度对刺五加猫爪子超微粉啤酒的影响。在此基础上采用响应面... 详细信息

以刺五加、猫爪子超微粉和麦芽为原料,酿造一种新型刺五加猫爪子超微粉啤酒。以酒精度和感官评分为指标,采用单因素试验分别考察超微粉浸提液加入量、浸提液加入阶段和主发酵温度对刺五加猫爪子超微粉啤酒的影响。在此基础上采用响应面优化试验确定刺五加猫爪子超微粉啤酒最优发酵工艺。结果表明,最佳酿造条件为在200 mL麦芽汁中超微粉浸提液加入量10.2 mL,主发酵加入超微粉浸提液,主发酵温度16.4℃,在此条件下酿造刺五加猫爪子超微粉啤酒风味和口感最佳。

关键词：刺五加猫爪子超微粉啤酒发酵工艺

木质纤维素的微生物法降解及其饲料化研究进展

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饲料工业 2024年第9期45卷 137-144页

作者：李鑫李建勋王雨萌张文娟武山开宋文军天津商业大学生物技术与食品科学学院天津300134 贵州国台酒业集团股份有限公司贵州仁怀564501 贵州国台酒业集团研究院天津300410

农作物秸秆是农业生产过程中的副产物,是地球上第一大可再生资源,我国是农作物秸秆资源量较为丰富的国家。木质纤维素是秸秆细胞壁的主要成分,是一种可循环利用的物质资源,在饲料领域具有很大的利用价值。木质纤维素的结构紧密且复杂,... 详细信息

农作物秸秆是农业生产过程中的副产物,是地球上第一大可再生资源,我国是农作物秸秆资源量较为丰富的国家。木质纤维素是秸秆细胞壁的主要成分,是一种可循环利用的物质资源,在饲料领域具有很大的利用价值。木质纤维素的结构紧密且复杂,利用难度大,采用生物法降解木质纤维素是一种绿色、安全、高效的方式。文章概述了木质纤维素的组成成分及结构,重点叙述了自然界中降解木质纤维素的微生物种类,及微生物降解木质纤维素各组分的降解机理,以期为研究生物降解木质纤维素提供参考依据,进而促进秸秆饲料化的发展进程。

关键词：秸秆木质纤维素木质纤维素降解菌组成成分降解机理生物降解

Development of PREDAC-H1pdm to model the antigenic evolution of influenza A/(H1N1)pdm09 viruses

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Virologica Sinica 2023年第4期38卷 541-548页

作者： Mi Liu Jingze Liu wenjun song Yousong Peng Xiao Ding Lizong Deng Taijiao Jiang Jiangsu Institute of Clinical Immunology The First Affiliated Hospital of Soochow UniversitySuzhou215006China Institute of Systems Medicine Chinese Academy of Medical Sciences&Peking Union Medical CollegeBeijing100005China Suzhou Institute of Systems Medicine Suzhou215123China Guangzhou Laboratory Guangzhou510005China Bioinformatics Center College of BiologyHunan Provincial Key Laboratory of Medical VirologyHunan UniversityChangsha410082China State Key Laboratory of Respiratory Disease the First Affiliated Hospital of Guangzhou Medical UniversityGuangzhou Medical UniversityGuangzhou510120China

The Influenza A(H1N1)pdm09 virus caused a global pandemic in 2009 and has circulated seasonally ever *** the continual genetic evolution of hemagglutinin in this virus leads to antigenic drift,rapid identification of antigenic variants and characterization of the antigenic evolution are *** this study,we developed PREDAC-H1pdm,a model to predict antigenic relationships between H1N1pdm viruses and identify antigenic clusters for post-2009 pandemic H1N1 *** model performed well in predicting antigenic variants,which was helpful in influenza *** mapping the antigenic clusters for H1N1pdm,we found that substitutions on the Sa epitope were common for H1N1pdm,whereas for the former seasonal H1N1,substitutions on the Sb epitope were more common in antigenic ***,the localized epidemic pattern of H1N1pdm was more obvious than that of the former seasonal H1N1,which could make vaccine recommendation more ***,the antigenic relationship prediction model we developed provides a rapid determination method for identifying antigenic variants,and the further analysis of evolutionary and epidemic characteristics can facilitate vaccine recommendations and influenza surveillance for H1N1pdm.

关键词： H1N1pdm virus Antigenic relationship prediction Antigenic evolution Vaccine recommendation

Revealing the specific role of sulfide and nano-alumina in composite solid-state electrolytes for performance-reinforced ether-nitrile copolymers

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Journal of Energy Chemistry 2024年第4期91卷 628-636页

作者： Haoyang Yuan Changhao Tian Mengyuan song wenjun Lin Tao Huang Aishui Yu Department of Chemistry Collaborative Innovation Center of Chemistry for Energy MaterialsShanghai Key Laboratory of Molecular Catalysis and Innovative MaterialsInstitute of New EnergyFudan UniversityShanghai 200438China Laboratory of Advanced Materials Fudan UniversityShanghai 200438China

Composite solid-state electrolytes represent a critical pathway that balances the interface compatibility and lithium-ion conductivity in all-solid-state *** quest for stable and highly ion-conductive combinations between polymers and fillers is vital,but blind attempts are often made due to a lack of understanding of the mechanisms involved in the interaction between polymers and ***,we employ in-situ polymerization to prepare a polymer based on an ether-nitrile copolymer with high cathode stability as the foundation and discuss the performance enhancement mechanisms of argyrodite and *** 1%content of sulfide interacting with the polymer at the two-phase interface,the local enhancement of lithium-ion migration capability can be achieved,avoiding the reduction in capacity due to the low ion conductivity of the passivation layer during *** capacity retention after 50cycles at 0.5 C increases from 83.5%to 94.4%.Nano-alumina,through anchoring the anions and interface inhibition functions,eventually poses an initial discharge capacity of 136.8 m A h g^(-1)at 0.5 C and extends the cycling time to 1000 h without short-circuiting in lithium metal *** the combined action of dual fillers on the composite solid-state electrolyte,promising insights are provided for future material design.

关键词： Composite solid-state electrolytes Lithium metal anode Dual fillers Interfacial ionic conduction Inert nano-alumina

Distributed High-Gain Attitude Synchronization Using Rotation Vectors

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Journal of Systems Science & Complexity 2015年第2期28卷 289-304页

作者： song wenjun THUNBERG Johan HU Xiaoming HONG Yiguang Key Laboratory of Systems and Control Chinese Academy of Sciences Optimization and Systems Theory Royal Institute of Technology

This paper addresses attitude synchronization problems for systems of multiple rigid-body agents with directed interconnection *** scenarios which differ in available information are *** the first scenario the agents can obtain their rotations and angular velocities relative to an inertial reference frame and transmit these information to their neighbors,while in the second scenario the agents can only obtain their own angular velocities and measure the relative rotations and relative angular velocities of their *** using rotation vectors and the high gain control,the authors provide torque control laws asymptotically synchronizing the rotations of the system almost globally for the first scenario and with initial rotations of the agents contained in a convex ball of SO(3)for the second *** illustrative example is provided to show the synchronization results for both scenarios.

关键词：同步系统旋转向量高增益分布式姿态角速度互连系统拓扑结构

Distributed attitude synchronization using backstepping and sliding mode control

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Control Theory and Technology 2014年第1期12卷 48-55页

作者： Johan THUNBERG wenjun song Yiguang HONG Xiaoming HU KTH Royal Institute of Technology S-100 44 Stockholm Sweden Key Laboratory of Systems and Control Academy of Mathematics and Systems Science Chinese Academy of Sciences Beijing 100190 China

We consider the problem of attitude synchronization for systems of rigid body agents with directed topologies. Two different scenarios for the rotation matrices of the agents are considered. In the first scenario, the rotations are contained in a convex subset of SO（3）, which is a ball of radius less than π/2, whereas in the second scenario the agents are contained in a subset of SO（3）, which is a ball of radius less than ~. Using a control law based on backstepping and sliding mode control, we provide distributed, semi-global, torque control laws for the agents so that the rotations asymptotically synchronize. The control laws for the agents in the first scenario only depend on the relative rotations between neighboring agents, whereas the control laws in the second scenario depend on rotations defined in a global coordinate frame, lllustrative examples are provided where the synchronization is shown for both scenarios.

关键词： Attitude synchronization Distributed control Multi-agent systems

Research on Realization Mechanism and Path of Beautiful Countryside under Perspective of Ecological Economic Compound System

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学术界 2018年第4期 274-284页

作者： Zhang Yuan song wenjun Lingnan College Sun Yat -sen University Guangzhou Guangdong 510275 School of Marxism Sun Yat -sen University Guangzhou Guangdong 510275

The practice based on"beautiful countryside"studies the evolution of Chinese rural society from supply-demand resource allocation to welfare type,forms the symbiotic model for the mechanism of"One Belt,One Road", establishes regional macroeconomic fundamentals, conforms to the situation of the marketization of China’s rural society and the"integration"of urban &rural areas. And it reestablishes the welfare form of rural"phenomenological"philosophy and it develops economic, ecological &social macroeconomic model. The research and use on the openness of"rural system"can promote the formation of ecological structure of rural system, can construct the symbiotic model of rural society, can form the social welfare system including "ecological synthesis","industrial complex"and"institutional community", can realize rural social stratification,o rganization optimization & demand support,and can lay the foundation of stability with Chinese characteristics.

关键词：中国农村复合系统宏观经济生态机制社会福利路径模型

Enlarged DNA unwinding by Nme2Cas9 permits a broadened base editing window beyond the protospacer

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Science China(Life Sciences) 2024年第2期67卷 424-427页

作者： Ziting Chen Xiangyang Li Qian Zhang wenjun Sun Xiaoxuan song Xia Zhang Xingxu Huang Bo Sun School of Life Science and Technology and Gene Editing Center ShanghaiTech UniversityShanghai 201210China Zhejiang Lab HangzhouZhejiang 311121China CAS Center for Excellence in Molecular Cell Science Shanghai Institute of Biochemistry and Cell BiologyChinese Academy of SciencesShanghai 200031China University of Chinese Academy of Sciences Beijing 100049China

Dear Editor,Base editing has been developed to be one of the effective CRISPR-based gene editing techniques(Rees and Liu,2018).Base editors(BEs)take advantage of DNAmodifying enzymes fused with a catalytically impaired CRISPR protein to install base *** BE,DNA-modifying enzymes often process nontarget singlestranded DNA(NTS)generated by Cas proteins.

关键词： install base winding