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网络舆情下教师专业成长的文化冲击及其突围

教育学术月刊 2024年第5期 73-79页

作者：崔宇玮龙宝新陕西师范大学教育学部陕西西安710062

网络舆情下教师专业成长的文化冲击是一种文化心理现象。移动互联时代给予教师成长以丰富有机的时空窗口,但也随之伴生潜在危机。网络舆情下,教师专业成长文化冲击的“四种表征”是:教师觉知失控化、情感负向化、意志唯诺化、行动困顿化... 详细信息

网络舆情下教师专业成长的文化冲击是一种文化心理现象。移动互联时代给予教师成长以丰富有机的时空窗口,但也随之伴生潜在危机。网络舆情下,教师专业成长文化冲击的“四种表征”是:教师觉知失控化、情感负向化、意志唯诺化、行动困顿化,导致的“三重危害”为:教师身份选择力失落、专业成长力下沉、队伍生畏力涨高。文化冲击源起于教师失德失信事件爆发,在潜舆论活跃显舆论冲击下发酵,经由网络生态多点牵引爆发助推,最终生成非理性境遇文化冲击波。未来,纵横连贯、内外共长、情理共治是文化冲击突围思路,教师源头防落网络舆情漩涡,舆情引导及其身心警愈,转向定焦舆情主体,全民参与共建共治共享是促进教师专业成长的应然之道。

关键词：网络舆情教师专业成长文化冲击

The single-cell transcriptomic landscape of the topological differences in mammalian auditory receptors

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Science China Life Sciences 2024年

作者： xiangyu Ma Xin Chen yuwei Che Siyao Zhu Xinlin Wang Shan Gao Jiheng Wu Fanliang Kong Cheng Cheng Yunhao Wu Jiamin Guo Jieyu Qi Renjie Chai State Key Laboratory of Bioelectronics Department of Otolaryngology Head and Neck Surgery Zhongda Hospital School of Life Sciences and Technology Advanced Institute for Life and Health Jiangsu Province High-Tech Key Laboratory for Bio-Medical Research Southeast University School of Engineering Vanderbilt University Department of Otolaryngology-Head and Neck Surgery Affiliated Drum Tower Hospital of Nanjing University Medical School Jiangsu Provincial Key Medical Discipline (Laboratory) Research Institute of Otorhinolaryngology Nanjing Department of Neurology Aerospace Center Hospital School of Life Sciences Beijing Institute of Technology Advanced Technology Research Institute Beijing Institute of Technology Co-innovation Center of Neuroregeneration Nantong University Department of Otolaryngology Head and Neck Surgery Sichuan Provincial People's Hospital University of Electronic Science and Technology of China Southeast University Shenzhen Research Institute

Mammalian hair cells (HCs) are arranged spirally along the cochlear axis and correspond to different frequency ranges. Serving as primary sound detectors, HCs spatially segregate component frequencies into a topographical map. HCs display significant diversity in anatomical and physiological characteristics, yet little is known about the organization of the cochleotopic map of HCs or the molecules involved in this process. Using single-cell RNA sequencing, we determined the distinct molecular profiles of inner hair cells and outer hair cells, and we identified numerous position-dependent genes that were expressed as gradients. Newly identified genes such as Ptn, Rxra, and Nfe2l2 were found to be associated with tonotopy. We employed the SCENIC algorithm to predict the transcription factors that potentially shape these tonotopic gradients. Furthermore, we confirmed that Nfe2l2, a tonotopy-related transcription factor, is critical in mice for sensing low-tomedium sound frequencies in vivo. the analysis of cell-cell communication revealed potential receptor-ligand networks linking inner hair cells to spiral ganglion neurons, including pathways such as BDNF-Ntrk and PTN-Scd4, which likely play essential roles in tonotopic maintenance. Overall, these findings suggest that molecular gradients serve as the organizing principle for maintaining the selection of sound frequencies by HCs.

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入侵植物生物炭负载Co/Fe双金属去除水中有机污染物的性能与机理研究

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环境科学学报 2024年第6期44卷 31-43页

作者：路雨微范宇寒陈明长江大学资源与环境学院武汉430199 中国科学院重庆绿色智能技术研究院重庆400714

以入侵植物钻叶紫菀、大狼耙草、意大利苍耳为生物质原材料,采用一步水热法和Co、Fe双金属掺杂制备了3种双金属催化剂,分别为Co-Fe-ASM、Co-Fe-BF、Co-Fe-XIM,它们均可有效活化过一硫酸盐(PMS)降解水中有机污染物.本研究以Co-Fe-ASM和... 详细信息

以入侵植物钻叶紫菀、大狼耙草、意大利苍耳为生物质原材料,采用一步水热法和Co、Fe双金属掺杂制备了3种双金属催化剂,分别为Co-Fe-ASM、Co-Fe-BF、Co-Fe-XIM,它们均可有效活化过一硫酸盐(PMS)降解水中有机污染物.本研究以Co-Fe-ASM和磺胺甲噁唑(SMX)为模型催化剂和污染物,通过扫描电子显微镜、透射电镜、X射线光电子能谱等一系列技术对Co-Fe-ASM进行表征,考察了不同环境条件对Co-FeASM/PMS体系降解SMX性能的影响与催化剂的稳定性.同时,通过自由基清除实验和电子顺磁共振技术研究了活性物种(ROS).结果表明,Co-Fe-ASM能有效活化PMS,可在3 min中完全去除SMX.此外,Co-Fe-ASM/PMS体系在实际水样中可有效去除污染物,其中,非自由基途径对SMX降解起主导作用.综上所述,本研究为以入侵植物作为原材料通过一步水热法成功合成双金属生物炭催化剂提供了有效的方法,并为实现含有机污染物的污水处理提供了一种具有前景的策略.

关键词：入侵植物生物炭高级氧化过一硫酸盐(PMS) 有机污染物

Wearable and interactive multicolored photochromic fiber display

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Light(Science & Applications) 2024年第3期13卷 454-465页

作者： Pan Li yuwei Wang Xiaoxian He Yuyang Cui Jingyu Ouyang Ju Ouyang Zicheng He Jiayu Hu Xiaojuan Liu Hang Wei Yu Wang Xiaoling Lu Qian Ji Xinyuan Cai Li Liu Chong Hou Ning Zhou Shaowu Pan xiangru Wang Huamin Zhou Cheng-Wei Qiu Yan-Qing Lu Guangming Tao State Key Laboratory of Material Processing and Die&Mould Technology School of Materials Science and Engineering and Wuhan National Laboratory for OptoelectronicsHuazhong University of Science and TechnologyWuhan 430074China Key Laboratory of Vascular Aging(HUST) Ministry of EducationWuhan 430030China School of Optoelectronic Science and Engineering University of Electronic Science and Technology of ChinaChengdu 611731China Department of Electrical and Computer Engineering National University of SingaporeSingapore 117583Singapore National Laboratory of Solid State Microstructures Key Laboratory of Intelligent Optical Sensing and ManipulationCollege of Engineering and Applied Sciencesand Collaborative Innovation Center of Advanced MicrostructuresNanjing UniversityNanjing 210023China School of Performing Arts Wuhan Conservatory of MusicWuhan 430060China School of Mechanical Science and Engineering Huazhong University of Science and TechnologyWuhan 430074China School of Architecture and Urban Planning Huazhong University of Science and TechnologyWuhan 430074China School of Fashion Beijing Institute of Fashion TechnologyBeijing 100029China School of Optical and Electronic Information Huazhong University of Science and TechnologyWuhan 430074China Tongji Medical College Huazhong University of Science and TechnologyWuhan 430074China State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Materials Science and EngineeringDonghua UniversityShanghai 201620China

Endowing flexible and adaptable fiber devices with light-emitting capabilities has the potential to revolutionize the current design philosophy of intelligent,wearable interactive ***,significant challenges remain in developing fiber devices when it comes to achieving uniform and customizable light effects while utilizing lightweight ***,we introduce a mass-produced,wearable,and interactive photochromic fiber that provides uniform multicolored light *** designed independent waveguides inside the fiber to maintain total internal reflection of light as it traverses the *** impact of excessive light leakage on the overall illuminance can be reduced by utilizing the saturable absorption effect of fluorescent materials to ensure light emission uniformity along the transmission *** addition,we coupled various fluorescent composite materials inside the fiber to achieve artificially controllable spectral radiation of multiple color systems in a single *** prepared fibers on mass-produced kilometer-long using the thermal drawing *** fibers can be directly integrated into daily wearable devices or clothing in various patterns and combined with other signal input components to control and display patterns as *** work provides a new perspective and inspiration to the existing field of fiber display interaction,paving the way for future human–machine integration.

关键词： fiber interactive colored

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肝硬化门静脉血栓防治的新靶点

中华肝脏病杂志 2024年第6期32卷 484-488页

作者：王宇威丁惠国首都医科大学附属北京佑安医院肝病消化中心北京100000

门静脉血栓(PVT)分为肝硬化性PVT和非肝硬化性PVT。PVT发病率在肝硬化不同临床阶段差别较大,总体发病率约为13.92%,而肝硬化脾切除术后PVT患病率高达60%。肝硬化性PVT的发病机制尚不明确,但Janus激酶/信号转导与转录激活子信号通路活化... 详细信息

门静脉血栓(PVT)分为肝硬化性PVT和非肝硬化性PVT。PVT发病率在肝硬化不同临床阶段差别较大,总体发病率约为13.92%,而肝硬化脾切除术后PVT患病率高达60%。肝硬化性PVT的发病机制尚不明确,但Janus激酶/信号转导与转录激活子信号通路活化、血管性血友病因子表达增加、肠道菌群及其代谢产物三甲胺-N-氧化物在肝硬化血管内皮细胞损伤、PVT形成中具有重要作用,可能是肝硬化性PVT防治的新靶点。

关键词：肝硬化门静脉血栓治疗危险因素肠道菌群预防靶点

食管胃结合部腺癌下纵隔淋巴结清扫范围与手术技巧

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中华胃肠外科杂志 2024年第9期27卷 909-913页

作者：曹钰尉陈小龙杨昆四川大学华西医院胃癌中心成都610041

食管胃结合部腺癌的发病率逐渐增高,其外科手术步骤主要包括了根治性原发肿瘤切除、淋巴结清扫及消化道重建。由于食管胃结合部腺癌解剖部位的特殊性,即位于食管和胃交界区域,其淋巴结转移规律尚不明确,如何清扫区域淋巴结仍存争议,特... 详细信息

食管胃结合部腺癌的发病率逐渐增高,其外科手术步骤主要包括了根治性原发肿瘤切除、淋巴结清扫及消化道重建。由于食管胃结合部腺癌解剖部位的特殊性,即位于食管和胃交界区域,其淋巴结转移规律尚不明确,如何清扫区域淋巴结仍存争议,特别是下纵隔淋巴结清扫的范围还有待更多高质量证据予以论证。同时,由于下纵隔所处解剖部位的特殊性,在进行下纵隔淋巴结清扫时往往存在较大的手术难度。如何更安全有效地完成下纵隔淋巴结的清扫,是胃癌外科医师关注的要点。本文探讨了食管胃结合部腺癌患者下纵隔淋巴结清扫范围的相关进展、共识和争议,结合自身经验,总结了目前临床上较为成熟的下纵隔淋巴结清扫技巧,以期进一步提高食管胃结合部腺癌下纵隔淋巴结清扫的质量。

关键词：食管胃结合部腺癌下纵隔淋巴结淋巴结清扫手术技巧

基于失能存活时间差异的长期护理保险收入再分配效应

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中国人口科学 2024年第4期38卷 67-82页

作者：何文炯侯雨薇浙江大学公共管理学院

长期护理保险(简称“长护险”)已试点多年并将在全国普遍实施,其收入再分配效应值得关注。文章基于CLHLS数据,估计了不同收入群体的预期失能存活时间,通过构建长护险终身缴费和待遇总额的精算分析模型,测算公平保费并计算不同群体的内... 详细信息

长期护理保险(简称“长护险”)已试点多年并将在全国普遍实施,其收入再分配效应值得关注。文章基于CLHLS数据,估计了不同收入群体的预期失能存活时间,通过构建长护险终身缴费和待遇总额的精算分析模型,测算公平保费并计算不同群体的内部收益率,以探究在不同做法下长护险制度可能产生的收入再分配效应。研究发现:(1)低收入群体在获取医疗和照护资源等方面处于劣势,可能导致其发生失能后的死亡风险更高,预期失能存活时间较短;(2)若全体参保者按公平保费定额筹资,且待遇水平相同,长护险可能产生逆向再分配,即预期失能存活期较短的低收入群体帮助预期失能存活期较长的高收入群体;(3)若按公平保费定额筹资,在设有最高支付限额的条件下,即使提高低收入参保者的报销比率,对促进正向收入再分配的效果也不明显;(4)若按工资或收入的固定比率筹资,则有利于实现正向的收入再分配。在设计全国统一的长护险制度时,需要注重制度的公平性和可持续性,在统一且适度的待遇水平下,科学测算公平费率并实行按固定比率筹资的方式,促使长护险发挥正向收入再分配功能。

关键词：长期护理保险失能存活时间终身收入再分配内部收益率

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基于改进高斯混合模型的概率潮流解析方法

电力系统保护与控制 2020年第10期48卷 146-155页

作者：李聪聪王彤相禹维王增平时伯年张岩新能源电力系统国家重点实验室(华北电力大学) 北京102206 北京四方继保自动化股份有限公司北京100085 国网北京市电力科学研究院北京100075

大规模风电并网使电力系统的随机性问题日益突出,概率潮流分析是一种能够计及电力系统随机性的稳态运行分析重要工具。针对风电的随机性和多个风电场出力之间的相关性问题,提出利用遗传算法改进的高斯混合模型求解多个风电场出力的联合... 详细信息

大规模风电并网使电力系统的随机性问题日益突出,概率潮流分析是一种能够计及电力系统随机性的稳态运行分析重要工具。针对风电的随机性和多个风电场出力之间的相关性问题,提出利用遗传算法改进的高斯混合模型求解多个风电场出力的联合概率密度函数,利用联合概率密度函数对多个风电场出力的随机性和相关性进行刻画。在此基础之上,利用线性潮流方程计算多条线路和多个节点电压的联合概率分布,最终求解概率潮流的计算结果。仿真结果表明,所提方法计算精度高,速度快,利用联合概率密度函数和联合分布函数能够比边缘分布更精确地评估电力系统多条线路同时过载的风险。

关键词：概率潮流高斯混合模型遗传算法相关性联合分布

Photo-induced Ag modulating carbon dots:Greatly improved fluorescent properties and derived sensing application

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Chinese Chemical Letters 2024年第1期35卷 338-342页

作者： yuwei Wang Ye Li Guixiang Yang Xiaofeng Yang Chenglu Yan Huaqiao Peng Huiyong Wang Juan Du Baozhan Zheng Yong Guo Department of Chemistry Sichuan UniversityChengdu 610064China Institute of Quality Standard and Testing Technology for Agro-products Sichuan Academy of Agricultural SciencesChengdu 610066China Key Laboratory of Aviation Fuel&Chemical Airworthiness and Green Development The Second Research Institute of Civil Aviation Administration of ChinaChengdu 610041China School of Chemistry and Chemical Engineering Henan Normal UniversityXinxiang 453007China

Carbon dots(CDs)have been attracted much attention and widely studied due to their excellent fluorescence(FL)properties,better biocompatibility and outstanding photo/chemical ***,the disadvantage of lower quantum yield(QY)still limits its wide ***,we reported a novel and convenient strategy to prepare photo-induced Ag/CDs(p-Ag/CDs)by irradiating the mixed Ag+and hydrophobic CDs(h-CDs)acetone solution with ultraviolet(UV)*** obtained p-Ag/CDs exhibit a greatly enhanced FL emission together with a blue shift(460 nm)than h-CDs(520 nm).The QY of p-Ag/CDs is measured to be 51.1%,which is 10.4 times higher than that of h-CDs(4.9%),indicating that photo-induced Ag modulation can effectively improve the optical properties of *** mechanisms for the FL enhancement and blue shift of h-CDs are studied in *** results prove that the greatly enhanced FL emission is from the generated Ag nanoparticles(AgNPs)by UV light irradiation based on metal-enhanced fluorescence(MEF),and the increased oxygen-contained groups in this process lead to the blue shift in CDs ***,the p-Ag/CDs exhibit higher sensitivity and selectivity for sulfide ions(S2-)detection than that of h-CDs,which have a lower response to S2-.This work not only offers a novel strategy to improve the FL properties of materials but also endows them with new functions and broadens their application fields.

关键词： Carbon dots Photo-induced Ag modulating Fluorescent enhancement High quantum yield Derived sensing application Sulfide determination