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微型外固定装置治疗陈旧性近指间关节骨折伴背侧脱位

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中华手外科杂志 2024年第1期40卷 64-67页

作者：赵志明李立全何祥春薛云皓随州市中心医院微创骨科随州441300 北京积水潭医院手外科北京100035

目的评估应用指间关节松解术结合微型外固定装置治疗陈旧性近指间关节骨折伴背侧脱位的疗效。方法自2013年6月至2016年11月,我们采用指间关节松解术结合微型外固定装置治疗陈旧性近指间关节骨折伴背侧脱位患者11例,按Schenck分型:ⅠA型4... 详细信息

目的评估应用指间关节松解术结合微型外固定装置治疗陈旧性近指间关节骨折伴背侧脱位的疗效。方法自2013年6月至2016年11月,我们采用指间关节松解术结合微型外固定装置治疗陈旧性近指间关节骨折伴背侧脱位患者11例,按Schenck分型:ⅠA型4例,ⅠB型2例,ⅡB型5例。术前指间关节功能按Ishida-Ikuta评分均评定为差。术中松解指浅屈肌腱止点粘连带,并将掌板近端做V形切开,新鲜化骨折端,松解近指间关节,使关节可被动屈伸达到正常范围,复位骨折,并用肌腱缝线修复掌板及副侧副韧带,固定骨折块后采用微型外固定装置牵开及维持关节间隙。术后4周去除外固定支架,开始进行近指间关节主被动屈伸功能锻炼。术后随访骨折愈合情况,并用Ishida-Ikuta评分进行功能评定。结果术后所有患者均获得完整随访,时间为7~24个月,平均13.1个月,切口均Ⅰ期愈合,无指神经损伤等并发症发生,其中1例出现针道感染,去除外固定装置、换药后愈合。术后X线片示所有病例骨折均完全愈合,时间为9~13周,平均10.3周。功能评价按Ishida-Ikuta评分:优10例,良1例。结论近指间关节松解术结合微型外固定装置治疗陈旧性近指间关节骨折伴背侧脱位疗效良好。

关键词：骨折脱位近指间关节外固定器关节松解术

Building and Application of the“Relay”Volunteer Teaching Model for Pre-service Teachers under“Internet Plus”

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Frontiers of Education in China 2022年第3期17卷 404-432页

作者： SheN Junru GUO Shaoqing he xiangchun WANG Dong WANG Jiayang School of Educational Science Zhengzhou Normal UniversityZhengzhou 450044China School of Educational Technology Northwest Normal UniversityLanzhou 730070China

The educational practice of pre-service teachers is an essential part of teacher *** an important form of educational practice,volunteer teaching can effectively improve the quality of teacher training and bridge the serving of basic *** the literature review on existing volunteer teaching models,this paper develops a teaching community of teachers under“Internet Plus”and the prototype of a“relay”volunteer teaching model towards the integrated design of training undergraduate pre-teachers and improving the educational quality of small rural *** sound“relay”volunteer teaching model has been formed upon revisions around checking its completeness,optimizing its operability,and enhancing its stability using the design-based research paradigm according to the research path of“planning-application-reflection-improvement.”The practice has indicated positive effects of the new model in promoting the academic development of students in small rural schools,enhancing the classroom teaching competency of rural teachers,and improving the professionalism of pre-service *** quality and efficiency of the new model can be improved through initiatives such as providing timely and efficient technical support,establishing a favorable and harmonious relationship between teachers and students,adopting guidance with double-qualified instructors for instant companionship,and implementing flexible incentives and restraints.

关键词： Internet Plus pre-service teacher small rural school volunteer teaching model community

连续施用不同种类生物质炭对植烟土壤养分的影响

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土壤 2024年第2期56卷 326-332页

作者：肖和友朱伟郑生猛刘聪聪何祥春刘蓉张赐喜刘娜梅刘旭唐涛陈立军湖南省烟草公司邵阳市公司湖南邵阳422000 福建省生态产业绿色技术重点实验室武夷学院生态与资源工程学院福建武夷山354300

为了改良植烟土壤质量,探讨连续施用不同种类生物质炭对植烟土壤养分含量的影响,通过3 a大田定位试验研究了连续施用不同生物质炭(CK:不添加生物质炭;T1:添加烟秆炭;T2:废弃烟叶炭;T3:玉米秸秆炭)下植烟土壤中的养分含量。结果表明:(1)... 详细信息

为了改良植烟土壤质量,探讨连续施用不同种类生物质炭对植烟土壤养分含量的影响,通过3 a大田定位试验研究了连续施用不同生物质炭(CK:不添加生物质炭;T1:添加烟秆炭;T2:废弃烟叶炭;T3:玉米秸秆炭)下植烟土壤中的养分含量。结果表明:(1)连续施用不同种类生物质炭能够显著提高土壤有机质、全氮、有效磷和速效钾含量,但对全磷、全钾以及碱解氮的作用并不显著。(2)在2018年采收期,3种生物质炭处理分别提高有机质10.26%、9.12%和6.96%,全氮10.36%、18.29%和9.03%,有效磷6.96%、18.57%和9.82%,速效钾16.53%、33.84%和13.05%。(3)随着试验年限的延长,添加烟秆炭对土壤有机质提升效果最好,其次是废弃烟叶炭,玉米秸秆炭最次;废弃烟叶炭提升土壤全氮、有效磷和速效钾效果最佳。综合分析来看,连续施用生物质炭能提高土壤养分含量,改善土壤肥力,以废弃烟叶炭效果最好,可大面积推广。

关键词：连续施用生物质炭植烟土壤养分

Advanced strategies for 3D-printed neural scaffolds:materials,structure,and nerve remodeling

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Bio-Design and Manufacturing 2024年第5期7卷 747-770页

作者： Jian he Liang Qiao Jiuhong Li Junlin Lu Zhouping Fu Jiafang Chen xiangchun Zhang Xulin Hu College of Basic Medicine and Forensic Medicine Henan University of Science and TechnologyLuoyang 471023China The First Affiliated Hospital College of Clinical Medicine of Henan University of Science and TechnologyLuoyang 471003China Tea Research Institute Chinese Academy of Agricultural SciencesHangzhou 310008China Clinical Medical College Affiliated Hospital of Chengdu UniversityChengdu UniversityChengdu 610081China Department of Cardiovascular Surgery Department of BiotherapyCancer Center and State Key Laboratory of BiotherapyWest China HospitalSichuan UniversityChengdu 610041China Department of Neurosurgery West China HospitalSichuan UniversityChengdu 610041China

Nerve regeneration holds significant potential in the treatment of various skeletal and neurological disorders to restore lost sensory and motor *** potential of nerve regeneration in ameliorating neurological diseases and injuries is critical to human ***-dimensional(3D)printing offers versatility and precision in the fabrication of neural *** neural structures such as neural tubes and scaffolds can be fabricated via *** reviewcomprehensively analyzes the current state of 3D-printed neural scaffolds and explores strategies to enhance their *** highlights therapeutic strategies and structural design involving neural materials and stem ***,nerve regeneration materials and their fabrication techniques are *** applications of conductive materials in neural scaffolds are reviewed,and their potential to facilitate neural signal transmission and regeneration is ***,the progress in 3D-printed neural scaffolds applied to the peripheral and central nerves is comprehensively evaluated,and their potential to restore neural function and promote the recovery of different nervous systems is *** addition,various applications of 3D-printed neural scaffolds in peripheral and neurological diseases,as well as the design strategies of multifunctional biomimetic scaffolds,are discussed.

关键词： Nerve regeneration 3D printing based neural scaffolds Biomaterials Nervous system Design strategies

Multi-affect(ed):improving recommendation with similarity-enhanced user reliability and influence propagation

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Frontiers of Computer Science 2021年第5期15卷 111-121页

作者： Lele HUANG Huifang MA xiangchun he Liang CHANG College of Computer science and engineering Northwest Normal UniversityLanzhou 730070China College of Computer Science and Information Security Guilin University of Electronic TechnologyGuilin 541004China

Traditional recommendation algorithms predict the latent interest of an active user by collecting rating information from other similar users or ***,more and more recommendation systems attempt to involve social relations to improve recommendation ***,the existing works either leave out the user reliability or cannot capture the correlation between two users who are similar but not socially ***,they also take the trust value between users either 0 or 1,thus degenerating the prediction *** this paper,we propose an efficient social affect model,multi-affect(ed),for recommendation via incorporating both users'reliability and influence ***,the model contains two main components,i.e.,computation of user reliability and influence propagation,designing of user-shared feature ***,a reliability calculation strategy based on user similarity is developed for measuring the recommendation accuracy between ***,the factor of influence propagation relationship among users is taken into ***,the multi-affect(ed)model is developed with user-shared feature space to generate the predicted *** results demonstrate that the proposed model achieves better accuracy than other counterparts recommendation techniques.

关键词： recommender systems similarity-enhanced user reliability user-shared feature space influence propagation matrix factorization

Biodegradation of polycyclic aromatic hydrocarbons in sediments from the Daliao River watershed, China

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Journal of Environmental Sciences 2009年第7期21卷 865-871页

作者： QUAN xiangchun, TANG Qian, he Mengchang, YANG Zhifeng, LIN Chunye, GUO Wei State Key Joint Laboratory of Environmental Simulation and Pollution Control, School of Environment, Beijing Normal University, Beijing 100875, China. State Key Joint Laboratory of Environmental Simulation and Pollution Control School of Environment Beijing Normal University Beijing 100875 China

The Daliao River, as an important water system in Northeast China, was reported to be heavily polluted by polycyclic aromatic hydrocarbons （PAHs）. Aerobic biodegradations of four selected PAHs （naphthalene, phenanthrene, fluorene and anthracene） alone or in their mixture in river sediments from the Daliao River water systems were studied in microcosm systems. Effects of additional carbon source, inorganic nitrogen and phosphorus, temperature variation on PAHs degradation were also investigated. Results showed that the degradation of phenanthrene in water alone system was faster than that in water-sediment combined system. Degradation of phenanthrene in sediment was enhanced by adding yeast extract and ammonium, but retarded by adding sodium acetate and not significantly influenced by adding phosphate. Although PAHs could also be biodegraded in sediment under low temperature （5~C）, much lower degradation rate was observed. Sediments from the three main streams of the Daliao River water system （the Hun River, the Taizi River and the Daliao River） demonstrated different degradation capacities and patterns to four PAHs. Average removal rates （15 or 19 d） of naphthalene, phenanthrene, fluorene and anthracene by sediment were in the range of 0.062-0.087, 0.005-0.066, 0.008- 0.016 and 0-0.059 mg/（L.d）, respectively. As a result, naphthalene was most easily degraded compound, anthracene was the hardest one. In multiple PAHs systems, the interactions between PAHs influenced each PAH biodegradation.

关键词： biodegradation the Daliao River microcosm polycyclic aromatic hydrocarbon sediment

Dix-Type Multi-Component Scholte Wave Dispersion Inversion without Initial Model

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Journal of Earth Science 2024年第4期35卷 1393-1396页

作者： Linjing Zhao xiangchun Wang Xiaobo Liu School of Geophysics and Information Technology China University of GeosciencesBeijing 100083China Key Laboratory of Intraplate Volcanoes and Earthquakes Ministry of EducationChina University of GeosciencesBeijing 100083China School of Ocean Sciences China University of GeosciencesBeijing 100083China Key Laboratory of Polar Geology and Marine Mineral Resources Ministry of EducationChina University of GeosciencesBeijing 100083China

0 INTRODUCTION Scholte wave dispersion curves contain rich information regarding seafloor media and have therefore attracted increasing attention(Wang et al.,2022;Dong et al.,2021;Du et al.,2020).Ocean bottom seismometer(OBS)data are widely used in the study of seafloor medium information(Wang et al.,2024),and contain rich surface wave information.

关键词： seafloor wave Inversion

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邵阳市植烟田杂草种类分析及防控研究

中国农学通报 2024年第6期40卷 152-156页

作者：肖和友刘聪聪刘娜梅马冠华何祥春刘蓉张赐喜于庆涛姚廷山湖南省烟草公司邵阳市公司湖南邵阳422000 西南大学植物保护学院重庆400716

旨在有效防控邵阳市植烟田杂草,维护大田烟草健康生长,调查了植烟田的杂草种类并归纳分析,在前期优选除草剂混配(乙羧氟草醚+砜嘧磺隆)基础上,通过施药后30 d除草效果调查,验证自制助剂的增效作用。结果表明,邵阳市植烟田杂草共有42种,... 详细信息

旨在有效防控邵阳市植烟田杂草,维护大田烟草健康生长,调查了植烟田的杂草种类并归纳分析,在前期优选除草剂混配(乙羧氟草醚+砜嘧磺隆)基础上,通过施药后30 d除草效果调查,验证自制助剂的增效作用。结果表明,邵阳市植烟田杂草共有42种,隶属于22科,广泛分布于各植烟田。自制助剂混配除草药剂有较好的除草效果,施药后30 d,砜嘧磺隆+乙羧氟草醚+助剂3000倍液总株防效95.44%,总鲜重防效达到97.19%,且对烟草安全。供试自制助剂+除草剂可以减施增效,可为烟草杂草的有效防控提供参考。

关键词：烟田杂草助剂除草剂减施增效

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人工智能助力教学创新的路径研究

国家教育行政学院学报 2021年第9期285卷 31-38页

作者：贺相春郭绍青西北师范大学互联网教育数据学习分析技术国家地方联合工程实验室甘肃兰州730070

以人工智能技术为代表的新兴信息技术与课程融合正在走向深水区,对教师教学创新提出新的挑战。智能时代由"互联网"、"教与学终端"、"资源"以及"平台"构成了教师教学环境的技术生态体系,师生通过"教与学终端"获取多样化的"资源"服务与多... 详细信息

以人工智能技术为代表的新兴信息技术与课程融合正在走向深水区,对教师教学创新提出新的挑战。智能时代由"互联网"、"教与学终端"、"资源"以及"平台"构成了教师教学环境的技术生态体系,师生通过"教与学终端"获取多样化的"资源"服务与多类态的"平台"服务。教师教学环境的变革对教师理性认知技术、驾驭智能教学环境、创新教学、适应人机协同教学、提升数据素养等提出了更高要求。智能技术助力教师在大单元教学、基于资源的个性化学习、规模个性化教学、教师专业发展、综合素质评价以及家校协同共育等方面开展教学创新。在此过程中,加强"互联网+教育"大平台的建设并充分发挥数据要素的作用,提升教学应用的智能化、个性化水平,推动教师智能教育素养培养值得重点关注。

关键词：人工智能教学创新个性化教学智能研训