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Journal of Mathematical Research with Applications 2024年第2期44卷 248-268页

作者： Yue CHENG dongsheng tang School of Mathematics and Statistics Nantong University Jiangsu Xinhai Senior High School

In this paper, we give improved error estimates for linearized and nonlinear CrankNicolson type finite difference schemes of Ginzburg-Landau equation in two dimensions. For linearized Crank-Nicolson scheme, we use mathematical induction to get unconditional error estimates in discrete L2and H1norm. However, it is not applicable for the nonlinear ***, based on a ‘cut-off ’ function and energy analysis method, we get unconditional L2and H1error estimates for the nonlinear scheme, as well as boundedness of numerical solutions. In addition, if the assumption for exact solutions is improved compared to before, unconditional and optimal pointwise error estimates can be obtained by energy analysis method and several Sobolev inequalities. Finally, some numerical examples are given to verify our theoretical analysis.

关键词： complex Ginzburg-Landau equation finite difference method unconditional convergence optimal estimates pointwise error estimates

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胜红蓟种子在不同土壤环境的存活力

南京农业大学学报 2024年第2期47卷 284-291页

作者：张燕欧阳爱莲王飞贾成成杨帆汤东生云南农业大学省部共建生物多样性利用与保护国家重点实验室云南昆明650201

[目的]本文旨在通过探究胜红蓟种子在不同土壤环境中的存活力大小,揭示胜红蓟种子在农田形成优势种群的原因。[方法]以胜红蓟种子为研究对象,检测胜红蓟种子采收后210 d内在不同温度、湿度、深度、pH值、盐浓度和渗透势土壤环境下存活... 详细信息

[目的]本文旨在通过探究胜红蓟种子在不同土壤环境中的存活力大小,揭示胜红蓟种子在农田形成优势种群的原因。[方法]以胜红蓟种子为研究对象,检测胜红蓟种子采收后210 d内在不同温度、湿度、深度、pH值、盐浓度和渗透势土壤环境下存活力动态。[结果]在10~30℃的土壤贮藏环境中,210 d内最适萌发温度始终为20℃,因此,将20℃培养的胜红蓟种子萌发率作为表征种子存活力的指标。在不同的土壤温度、湿度环境中,胜红蓟种子在5~30℃、土壤湿度20%环境中贮藏120 d的种子存活力均高于90%。在土壤深度20 cm,贮藏120 d的胜红蓟种子存活力无显著下降;贮藏深度达到30 cm种子存活力下降至60%。在pH值为4~10环境中贮藏120 d的胜红蓟种子存活力一直维持在95%以上,各处理之间无显著差异。在不同NaCl浓度的土壤环境中贮藏150 d的胜红蓟种子存活力无显著差异,存活力均超过95%;贮藏180 d后,160 mmol·L^(-1)NaCl处理种子存活力才显著低于其他处理。在渗透势高于-0.8 MPa的土壤环境中,贮藏150 d各处理胜红蓟种子存活力保持在95%以上;当渗透势达到-1 MPa时,贮藏180 d的种子存活力下降至85%。[结论]贮藏210 d,胜红蓟种子在不同梯度土壤温度、土壤湿度、pH值、盐浓度、渗透势、深度的贮藏条件下存活力保持稳定,显示出强大的适应性和耐受性,可能是其成为热带亚热带地区农田恶性杂草的原因。

关键词：胜红蓟土壤环境种子存活力持久性

短视频泛娱乐化对大学生思想政治教育的挑战及对策

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广西教育学院学报 2024年第1期39卷 79-84页

作者：张彤彤唐东升南宁师范大学马克思主义学院广西南宁530299 广西建设职业技术学院广西南宁530007

短视频时代,以享乐主义、消费主义为核心的泛娱乐化的野蛮生长,对大学生思想政治教育构成了隐蔽性冲击和挑战,在一定程度上会削弱教育主体的主导性与权威性,影响教育客体的受控性与可塑性,冲击教育介体的整体性与实效性,加剧教育环体的... 详细信息

短视频时代,以享乐主义、消费主义为核心的泛娱乐化的野蛮生长,对大学生思想政治教育构成了隐蔽性冲击和挑战,在一定程度上会削弱教育主体的主导性与权威性,影响教育客体的受控性与可塑性,冲击教育介体的整体性与实效性,加剧教育环体的复杂性与斗争性。为应对短视频泛娱乐化给大学生思想政治教育带来的一系列挑战,需要政府、短视频平台、高校和大学生的共同努力:加强教育主体建设,提高应对短视频泛娱乐化的战斗力;提升教育客体素养,增强应对短视频泛娱乐化的免疫力;坚持教育介体创新,激发应对短视频泛娱乐化的新活力;推进教育环境优化,汇聚应对短视频泛娱乐化的大合力。

关键词：短视频泛娱乐化思想政治教育挑战对策

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新型还原响应纳米四价铂抗卵巢癌作用研究

中华肿瘤杂志 2024年第1期46卷 76-85页

作者：侯弘毅唐东升张亚男王焜煜奥妙雒海瑕李斌国家癌症中心、国家肿瘤临床医学研究中心、中国医学科学院北京协和医学院肿瘤医院妇科北京100021 北京大学人民医院妇产科北京100044 北京分子科学国家研究中心、中国科学院化学研究所高分子物理化学实验室北京100190

目的探讨新型还原响应纳米四价铂[NP@Pt(Ⅳ)]的抗卵巢癌作用。方法合成还原响应的聚合物载体, 与四价铂[Pt(Ⅳ)]组装形成NP@Pt(Ⅳ)。电感耦合等离子体质谱检测NP@Pt(Ⅳ)在还原环境下的铂释放情况, 以及经顺铂、Pt(Ⅳ)和NP@Pt(Ⅳ)处理后... 详细信息

目的探讨新型还原响应纳米四价铂[NP@Pt(Ⅳ)]的抗卵巢癌作用。方法合成还原响应的聚合物载体, 与四价铂[Pt(Ⅳ)]组装形成NP@Pt(Ⅳ)。电感耦合等离子体质谱检测NP@Pt(Ⅳ)在还原环境下的铂释放情况, 以及经顺铂、Pt(Ⅳ)和NP@Pt(Ⅳ)处理后卵巢癌ES2细胞中的铂含量。四甲基偶氮唑蓝和流式细胞术检测顺铂、Pt(Ⅳ)和NP@Pt(Ⅳ)对卵巢癌细胞增殖抑制能力的影响。收集2022年10—12月于中国医学科学院肿瘤医院手术治疗的原发性高级别浆液性卵巢癌患者的原发卵巢癌组织, 采用动物活体成像观察花菁染料(Cy)7.5标记的NP@Pt(Ⅳ)在高级别浆液性卵巢癌人源性肿瘤异种移植(PDX)小鼠体内的生物分布。PDX小鼠尾静脉注射磷酸盐缓冲液(对照组)、顺铂(顺铂组)和NP@Pt(Ⅳ), 测量各组小鼠的肿瘤体积和重量, 采用HE染色、TUNEL荧光染色和Ki-67免疫组化染色检测肿瘤组织的坏死、凋亡和细胞增殖情况。测量各组小鼠的体重变化和主要器官的HE染色情况。结果 NP@Pt(Ⅳ)在还原环境中48 h后的铂释放量为76.29%, 高于非还原环境中的26.82%(P0.05]。小鼠心脏、肝脏、脾脏、肺、肾脏主要脏器HE染色未见明显异常。结论 NP@Pt(Ⅳ)可靶向蓄积于肿瘤组织, 促进铂在卵巢癌细胞内的累积, 具有较强的抗卵巢癌作用。

关键词：卵巢肿瘤顺铂四价铂纳米递送还原响应铂耐药

基于事故树的云机房网络安全态势自动化预测系统

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自动化与仪表 2024年第4期39卷 149-152,157页

作者：丁之何启学唐冬升倪杨四川中烟工业有限责任公司成都610016 中科院成都信息技术股份有限公司成都610299 成都中科信息技术有限公司成都610299

为全面掌握云机房网络安全的运行状态,预测网络的安全态势,该文设计基于事故树的云机房网络安全态势自动化预测系统。该系统的云机房模块采用日志类传感器采集云机房网络数据,并存储至数据管理模块中,功能模块以存储的数据为依据,通过... 详细信息

为全面掌握云机房网络安全的运行状态,预测网络的安全态势,该文设计基于事故树的云机房网络安全态势自动化预测系统。该系统的云机房模块采用日志类传感器采集云机房网络数据,并存储至数据管理模块中,功能模块以存储的数据为依据,通过时间窗口检测存储数据中的异常数据流,采用逐级量化方法计算云机房网络危险度后,利用事故分析法计算云机房网络安全事件重要度,依据该结果即可分析网络未来的变化情况。测试结果可知,该系统具有全面的网络运行相关数据采集能力,网络安全态势的量化效果较好,决定系数结果均在0.022以下;有效实现不同目的IP地址网络的风险态势预测量化分析,可靠掌握云机房网络的安全态势情况。

关键词：危险度评价事故树分析云机房网络安全态势自动化预测事件重要度

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Van der Waals contacted WSe_(2) ambipolar transistor for in-sensor computing

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Nano Research 2023年第11期16卷 12713-12719页

作者： Yue Wang Haoran Sun Zhe Sheng Jianguo Dong Wennan Hu dongsheng tang Zengxing Zhang School of Microelectronics Fudan UniversityShanghai 200433China Synergetic Innovation Center for Quantum Effects and Application Key Laboratory of Low-Dimensional Quantum Structures and Quantum Control of Ministry of EducationSchool of Physics and ElectronicsHunan Normal UniversityChangsha 410081China National Integrated Circuit Innovation Center No.825 Zhangheng RoadShanghai 201203China

Image sensors with an in-sensor computing architecture have shown great potential in meeting the energy-efficient requirements of emergent data-intensive applications,where images are processed within the photodiode *** demands the composed photodiodes are reconfigurable,which are usually achieved by ambipolar two-dimensional(2D)*** improve the ambipolar charges injection,here we report a top-gated field-effect transistor(FET)design that is of bottom van der Waals contact via transferring ambipolar 2D WSe_(2) onto Pd/Cr source/drain *** devices exhibit nearly negligible effective barrier heights for both holes and electrons based on thermionic emission mode,and show an almost balanced on/off ratio in the p-branch and *** replacing the top gate with two aligned semi-gates,the devices can effectively function as reconfigurable *** can be switched between PIN and NIP configurations via controlling the two semi-gates,exhibiting good linearity in terms of short-circuit current(ISC)and incident light power *** photodiode arrays are also demonstrated for in-sensor optoelectronic convolutional image processing,showing significant potential for in-sensor computing image processors.

关键词： ambipolar transistor van der Waals contact reconfigurable photodiode in-senor computing

Scientific literature addressing brain glioma in the Web of Science A 10-year bibliometric analysis

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Neural Regeneration Research 2011年第32期6卷 2537-2544页

作者： Zaihua Xu Tao tang dongsheng Pan Di Fan Zhenquan Song Hongli Xue Department of Neurosurgery General Hospital of Shenyang Military Command of Chinese PLA Shenyang 110016 Liaoning ProvinceChina

Brain glioma is a hot topic in recent years; however, brain glioma remains poorly understood. A bibliometric analysis based on the Science Citation Index （SCI） published by the Institute of Scientific Information （ISI） was performed to identify the global research and to improve the understanding of research trends in the brain glioma field from 2001 to 2010. During 2001 to 2010, there were 8 413 papers addressing brain glioma added to the SCI, and this trend is increasing annually. Of these reports, 6 945 papers are written in English. Journals published in the United States had the most papers, including ten core source titles. The Journal of Neuro-Oncology published the most articles followed by Cancer Research. Furthermore, the University of California San Francisco, is the most productive institution for publishing articles in the brain glioma field. Finally, this study highlights the topics in brain glioma research that are being published around th~ world.

关键词： brain glioma bibliometrics SCI analysis scientific literature

In situ electrochemical dehydrogenation of ultrathin Co(OH)_(2) nanosheets for enhanced hydrogen evolution

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Chinese Chemical Letters 2023年第1期34卷 469-473页

作者： Qian Zhou Qihang Bian Liling Liao Fang Yu Dongyang Li dongsheng tang Haiqing Zhou Department of Physics and Synergetic Innovation Center for Quantum Effects and Applications Key Laboratory of Low-Dimensional Quantum Structures and Quantum Control of Ministry of EducationKey Laboratory for Matter Microstructure and Function of Hunan ProvinceHunan Normal UniversityChangsha 410081China Hunan Joint International Laboratory of Advanced Materials and Technology for Clean Energy Hunan UniversityChangsha 410082China

Transition metal hydroxides/oxyhydroxides have recently emerged as highly active electrocatalysts for oxygen evolution reaction in alkaline water electrolysis,while have not yet been widely investigated for hydrogen evolution electrocatalysts owing to their unfavorable H*-adsorption,making it difficult to construct an overall-water-splitting cell for hydrogen *** this work,we proposed a straightforward and effective approach to develop an efficient in-plane heterostructured CoOOH/Co(OH)_(2) catalyst via in-situ electrochemical dehydrogenation method,in which the dehydrogenated–CoOOH and Co(OH)_(2) at the surface synergistically boost the hydrogen evolution reaction(HER)kinetics in base as confirmed by high-resolution transmission electron microscope,synchrotron X-ray absorption spectroscopy,and electron energy loss *** to the in-situ dehydrogenation of ultrathin Co(OH)_(2) nanosheets,the catalytic activity of the CoOOH/Co(OH)_(2) heterostructures is progressively improved,which exhibit outstanding hydrogen-evolving activity in base requiring a low overpotential of 132 m V to afford 10 m A/cm^(2)with very fast reaction kinetics after 60 h *** gradually improved catalytic performance for the CoOOH/Co(OH)2is probably due to the enhanced H*-adsorption induced by the synergistic effect of heterostructures and better conductivity of Co OOH relative to electrically insulating Co(OH)_(2).This work will open the opportunity for a new family of transition metal hydroxides/oxyhydroxides as active HER catalysts,and also highlight the importance of using in situ techniques to construct precious metal-free efficient catalysts for alkaline hydrogen evolution.

关键词： Hydrogen evolution reaction Transition metal hydroxide In-situ electrochemical dehydrogenation In-plane heterostructure Water splitting

Identification and characterization of human neuronal voltage-gated calcium channel gamma 3 subunit gene

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Chinese Science Bulletin 2000年第23期45卷 2172-2176页

作者： Jiahui Xia Huali Zhang dongsheng tang Xixiang tang Heping Dai Qian Pan Zhigao Long Xiaodong Liao Hunan Med Univ Natl Lab Med Genet Changsha 410078 Peoples R China

By homologous expressed sequence tag (EST) searching, one EST (GenBank: W29095) was obtained, which shows 75% identity in 435 bp overlap with the coding sequence of mouse Cacng2 gene. A 1 545 bp cDNA fragment was obtained from the nested polymerase chain reaction (PCR) and rapid applification of cDNA end (RACE) reaction in the human brain prefrontal cortex cDNA library and the human brain Ready cDNA with the primers designed on W29095. The fragment contained a 948-bp open reading frame (ORF) encoding 315 amino acids, and was named CACNG3. As it was identical to a BAC clone (GenBank: AC004125) from chromosome 16p12-p13.1, the CACNG3 gene was mapped to human chromosome 16p12-p13.1, and the coding region was composed of 4 exons. Reverse transcription PCR (RT-PCR) analysis showed that the CACNG3 gene expressed in human adult brain and fetal brain. Single strand comformation polymorphism (SSCP) analysis was performed in 3 pedigrees with autosomal recessive retinitis pigmentosa, 8 pedigrees with autosomal

关键词： Cacng2 CACNG3 gene cloning SSCP homologous searching.

云南曲靖和蒙自万寿菊主栽区有害生物调查与分析

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植物保护 2024年第3期50卷 293-299,306页

作者：张艺萍杨慈琳许凤钱绍方张丽芳王丽花王继华汤东生云南省农业科学院花卉研究所云南省花卉育种重点实验室国家观赏园艺工程技术研究中心昆明650205 云南农业大学植物保护学院云南生物资源保护与利用国家重点实验室昆明650201 云南博浩生物科技集团股份有限公司曲靖655331

近年来,我国万寿菊单一种植规模不断扩大,有害生物的发生越发严重,影响万寿菊产量与品质,造成较大的经济损失。关于万寿菊有害生物调查,前人报道多集中于吉林、海南、黑龙江、贵州、甘肃、山西等地,对云南万寿菊主产区的有害生物缺乏系... 详细信息

近年来,我国万寿菊单一种植规模不断扩大,有害生物的发生越发严重,影响万寿菊产量与品质,造成较大的经济损失。关于万寿菊有害生物调查,前人报道多集中于吉林、海南、黑龙江、贵州、甘肃、山西等地,对云南万寿菊主产区的有害生物缺乏系统调查。因此,本次研究在全国最大的万寿菊种植区和近两年来万寿菊叶黄素含量最高的种植区,即曲靖市沾益区和蒙自市冷泉镇进行有害生物系统调查,发现曲靖地区万寿菊主要病害有褐斑病和枯萎病;主要害虫包括美洲斑潜蝇、斜纹夜蛾、棉铃虫等10种;主要杂草有粗毛牛膝菊、鬼针草、马唐、千针苋等19种。蒙自地区万寿菊主要病害有褐斑病和炭疽病;主要害虫包括美洲斑潜蝇、四斑长跗萤叶甲、棉铃虫等9种;主要杂草有粗毛牛膝菊、马唐、尼泊尔蓼、细柄野荞麦等13种。

关键词：万寿菊病害虫害草害调查

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