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综合医院儿童精神科联络会诊中躯体化症状障碍患儿焦虑症状、抑郁症状和自我意识的分析

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内科 2024年第2期19卷 143-148页

作者：李桂克孙华孟纲尤美娜李南施广西医科大学第一附属医院心理卫生科南宁市530021

目的探讨综合医院儿童精神科联络会诊中躯体化症状障碍(SSD)患儿的焦虑症状、抑郁症状和自我意识及其影响因素。方法选取83例SSD患儿作为研究对象,依据症状表现分为神经系统症状组(n=44)和消化系统症状组(n=39)。比较两组焦虑症状、抑... 详细信息

目的探讨综合医院儿童精神科联络会诊中躯体化症状障碍(SSD)患儿的焦虑症状、抑郁症状和自我意识及其影响因素。方法选取83例SSD患儿作为研究对象,依据症状表现分为神经系统症状组(n=44)和消化系统症状组(n=39)。比较两组焦虑症状、抑郁症状和自我意识,应用多因素Logistic回归模型分析SSD患儿自我意识的影响因素。结果神经系统症状组的儿童焦虑性情绪障碍筛查量表总分、社交恐怖因子分和学校恐怖因子分均高于消化系统症状组,消化系统症状组儿童自我意识量表的焦虑因子分高于神经系统症状组(均P<0.05)。多因素Logistic回归模型分析结果显示,人际关系、独生子女、焦虑症状、抑郁症状均是SSD患儿自我意识的影响因素(均P<0.05)。结论综合医院儿童精神科联络会诊中不同症状表现的SSD患儿的焦虑症状和自我意识水平不同,患儿的自我意识跟人际关系、是否独生子女、焦虑症状和抑郁症状均有关,对SSD患儿的治疗应更多关注其情绪状态,提高其自我意识。

关键词：躯体化症状障碍焦虑抑郁儿童自我意识量表联络会诊

Infrared transition properties of vanadium dioxide thin films across semiconductor-metal transition

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Rare Metals 2011年第3期30卷 247-251页

作者： liANG Jiran HU Ming KAN Qiang liANG Xiuqin WANG Xiaodong li guike CHEN Hongda School of Electronic and Information Technology Tianjin University Tianjin 300072 China State Key Laboratory of Integrated Optoelectronics Institute of Semiconductors Chinese Academy of Sciences Beijing 100083 China Engineering Research Center for Semiconductor Integrated Technology Institute of Semiconductors Chinese Academy of Sciences Beijing 100083 China State Key Laboratory for Super Lattices and Microstructures Institute of Semiconductors Chinese Academy of Sciences Beijing 100083 China

Vanadium dioxide thin films were fabricated through annealing vanadium oxide thin films deposited by dual ion beam sputtering. X-ray diffraction （XRD）, atom force microscopy （AFM）, and Fourier transform infrared spectrum （FTIR） were employed to measure the crystalline structure, surface morphology, and infrared optical transmittance. The phase transition properties were characterized by transmittance. The results show that the annealed vanadium oxide thin film is composed of monoclinic VO2, with preferred orientation of （011）. The maximum of transmittance change is beyond 65% as the temperature increases from 20 to 80 C. The reversible changes in optical transmittance against temperature were observed. The change rate of transmittance at short wavelength is higher than that at long wavelength at the same temperature across semiconductor-metal phase transition. This phenomenon was discussed using diffraction effect.

关键词： vanadium dioxide infrared transition diffraction effect dual ion beam sputtering annealing

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基于深度学习的动态危险区域入侵检测方法

中国安全生产科学技术 2024年第7期20卷 170-178页

作者：朱鹏浩李军张世义宋贵科郭龙真李丹重庆交通大学机电与车辆工程学院重庆400074 郑州恒达智控科技股份有限公司河南郑州450000 重庆交通大学航运与船舶工程学院重庆400074 郑州经济技术开发区艺术小学河南郑州450000

为解决天车吊装动态危险区域难识别、位置信息难确定、车间生产环境复杂导致特殊的相机视角所获取的人员目标特征信息不明显,影响漏检误检和标准目标检测模型部署应用难等问题,提出1种基于深度学习的动态危险区域人员入侵检测方法。该... 详细信息

为解决天车吊装动态危险区域难识别、位置信息难确定、车间生产环境复杂导致特殊的相机视角所获取的人员目标特征信息不明显,影响漏检误检和标准目标检测模型部署应用难等问题,提出1种基于深度学习的动态危险区域人员入侵检测方法。该方法首先利用双目视觉技术完成重物提升判断及天车吊装动态危险区域检测2项任务,然后利用提出的PDConv轻量化卷积模块和卷积注意力机制模块对YOLOv5基础模型进行改进,并设计开发天车吊装动态危险区域人员入侵检测系统。研究结果表明:利用双目视觉技术可以更精准获取动态危险区域位置信息;改进后的YOLOv5基础模型在保证模型检测精度的同时可降低适当参数量;天车吊装动态危险区域人员入侵检测系统可实现远程管控天车危险区域入侵检测任务,并利用振动报警装置可实时对入侵人员进行提醒管理,该系统在实际测试中的漏检误检率为2%,满足工业生产需求。研究结果可为动态危险区域入侵检测研究提供参考。

关键词： YOLOv5模型动态危险区域卷积注意力模块双目视觉

Electrochemical NO reduction to NH3 on Cu single atom catalyst

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Nano Research 2023年第4期16卷 5857-5863页

作者： Kai Chen guike Zhang Xiaotian li Xiaolin Zhao Ke Chu School of Materials Science and Engineering Lanzhou Jiaotong UniversityLanzhou 730070China National Engineering Laboratory for Electric Vehicles Beijing Institute of TechnologyBeijing 100081China

Electrochemical NO reduction reaction(NORR)to generate NH_(3)emerges as a fascinating approach to achieve both NO pollution mitigation and sustainable NH_(3)***,we demonstrate that single-atomic Cu anchored on MoS_(2)(Cu_(1)/MoS_(2))comprising Cu_(1)-S_(3)motifs can serve as a highly efficient NORR ***1/MoS_(2)exhibits an NH_(3)yield rate of 337.5μmol·h^(−1)·cm^(−2)with a Faradaic efficiency of 90.6%at−0.6 V *** hydrogen electrode(RHE).Combined experiments and theoretical calculations reveal that Cu1-S3 motifs enable the effective activation and hydrogenation of NO through a mixed pathway and simultaneously retard proton coverage,contributing to the high activity and selectivity of Cu1/MoS_(2)for the NORR.

关键词： electrochemical NO reduction to NH_(3) Cu single-atom catalyst theoretical calculations

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大理洱源县高氟温泉水中氟含量控制研究

环境科学与技术 2015年第12期38卷 210-214,221页

作者：徐永新王凤兰李桂科喻铮铮许昌学院河南许昌461000 云南师范大学云南昆明650000 大理洱源县疾控中心云南洱源671200

为探讨大理洱源县氟中毒区高氟温泉水中氟含量控制方法,文章采用羟基磷酸钙离子交换法和黏土、明矾吸附法进行温泉水中除氟。结果表明,采用羟基磷酸钙离子交换法进行温泉水中除氟,分别在24、79、92℃温泉水样中按照1.67 g/L比例加入羟... 详细信息

为探讨大理洱源县氟中毒区高氟温泉水中氟含量控制方法,文章采用羟基磷酸钙离子交换法和黏土、明矾吸附法进行温泉水中除氟。结果表明,采用羟基磷酸钙离子交换法进行温泉水中除氟,分别在24、79、92℃温泉水样中按照1.67 g/L比例加入羟基磷酸钙,温泉水样中的氟含量由5.28μg/m L到4.55、3.30和2.62μg/m L,将水样温度调节到当地沸点92℃,除氟后水样的含氟量仍高达2.62μg/m L,超过国家饮水氟含量标准(1.0μg/m L,GB 5749-2006)。采用的黏土和明矾吸附法进行温泉水中除氟,在室温稳定的情况下,加入标准量、1.5倍量、2倍量、3倍量除氟剂,温泉水中氟含量由5.28μg/m L分别降至0.95、0.33、0.12、0.08μg/m L;当加入除氟剂量保持不变,在室温(24℃)、50、79℃时氟含量由5.28μg/m L分别降至0.95、0.75、0.73μg/m L;当除氟剂量和作用温度均保持不变,加入标准除氟剂量在室温条件下分别静置30 min和12 h,温泉水中氟含量由5.28μg/m L分别降至0.87、0.91μg/m L。以上采用黏土和明矾去除洱源当地温泉水中氟试验中,改变添加除氟试剂量、温度以及静置时间等条件时,除氟量和除氟率有所变化,但是除氟后的温泉水中氟含量均低于1.0μg/m L,符合国家生活饮用水卫生标准。

关键词：氟温泉水控制研究洱源县

Steering surface reconstruction of hybrid metal oxides for efficient oxygen evolution reaction in water splitting and zinc-air batteries

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Journal of Energy Chemistry 2024年第5期92卷 383-393页

作者： Jie Zhu Junxue Chen Xida li Kun Luo Zewei Xiong Zhiyu Zhou Wenyun Zhu Zhihong Luo Jingbin Huang Yibing li Key Lab of New Processing Technology for Nonferrous Metals and Materials Ministry of EducationSchool of Materials Science and EngineeringGuilin University of TechnologyGuilin 541000GuangxiChina The Key Laboratory of Rare Earth Functional Materials and Applications Zhoukou Normal UniversityZhoukou 466001HenanChina School of Chemistry and Chemical Engineering Beijing Institute of TechnologyBeijing 100081China School of Materials Science and Engineering Changzhou UniversityChangzhou 213164JiangsuChina Wuhan Sunmoon Battery Co. LtdWuhan 430090HubeiChina

Surface reconstruction yields real active species in electrochemical oxygen evolution reaction(OER)conditions;however,rationally regulating reconstruction in a targeted manner for constructing highly active OER electrocatalysts remains a formidable ***,an electrochemical activation strategy with selective etching was utilized to guide the reconstruction process of a hybrid cobalt-molybdenum oxide(CoMoO_(4)/Co_(3)O_(4)@CC)in a favorable direction to improve the OER *** in-situ Raman and multiple ex-situ characterization tools demonstrate that controlled surface reconstruction can be easily achieved through Mo etching,with the formation of a dynamically stable amorphous-crystalline *** calculations together with experimental results reveal that the synergistic effects between amorphous CoOOH and crystalline Co_(3)O_(4) are crucial in enhancing the catalytic ***,the reconstructed CoMoO_(4)/Co_(3)O_(4)@CC exhibits a low overpotential of 250 mV to achieve a current density of 10 mA cm^(-2) in 1 M KOH,and more importantly it can be practiced in electrolytic water splitting and rechargeable zinc-air batteries devices,achieving ultra-long stability for over 500 and 1200 h,*** work provides a promising route for the construction of high-performance electrocatalysts.

关键词： Electrocatalyst Oxygen evolution reaction Surface reconstruction Selective etching Amorphous-crystalline heterostructures

Hybrid assembly of conducting nanofiber network for ultra-stretchable and highly sensitive conductive hydrogels

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Journal of Materials Science & Technology 2024年第2期169卷 1-10页

作者： Yalei Wang Shulong Zeng Shaohong Shi Yuheng Jiang Zhiwei Du Bingzhen Wang Xiurong li State Key Laboratory of Featured Metal Materials and life-cycle Safety for Composite Structures School of ResourcesEnvironment and MaterialsGuangxi UniversityNanning 530004China State Key Laboratory of Polymer Materials Engineering Polymer Research Institute of Sichuan UniversitySichuan UniversityChengdu 610065China

Conductive hydrogels have attracted extensive attention owing to their promising application prospects in flexible and wearable ***,achieving both high sensitivity and mechanical robustness remains ***,a novel and versatile conductive hydrogel based on the hybrid assem-bly of conductive cellulose nanofiber(CNF)networks has been designed and *** by the templating effect of CNFs and stabilizing effect of negatively charged poly(styrene sulfonate)(PSS),conducting polymer poly(3,4-ethylenedioxythiophene)(PEDOT)was self-organized into three-dimensional nanostructures which constructed a robust conductive network after in-situ oxidative *** unique structure derived from CNF bio-template endowed polyacrylamide(PAM)hydrogels with improved electrical conductivity and excellent mechanical *** a result,the as-fabricated CNF/PEDOT:PSS/PAM hydrogel exhibited an ultimate tensile strain of 1881%and toughness of 3.72 MJ/m^(3),which were 4.07 and 8.27 times higher than the CNF-free hydrogel,*** significantly,the resultant hydrogel sensor showed highly desirable sensing properties,including remarkable sensing range(1100%),high gauge factor(GF=5.16),fast response time(185 ms),and commendable durability,as well as good ***,the hydrogel sensor was able to distinguish subtle physiological activities including phonation and facial expression,and monitor large human body motions such as finger flexion and elbow ***,it was feasible to integrate the strain sensor on the joints of robots to recognize complicated machine motion signals,showing potential in advanced human-machine interactions.

关键词： Strain sensor Cellulose nanofibers PEDOT:PSS Conductive hydrogel Templating method

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脑肿瘤靶向纳米递药系统的研究进展

肿瘤药学 2016年第2期6卷 89-95页

作者：杜雯雯吴俊珠李贵轲张汉超张成桂大理大学药学与化学学院云南省昆虫生物医药研发重点实验室云南大理671000

脑肿瘤中恶性肿瘤较为常见,脑瘤发展快、治疗难导致了较高的死亡率。采用化学药物治疗时,药物进入脑肿瘤组织必须通过血脑屏障和血-脑瘤屏障。一些有潜力的抗肿瘤药物由于自身物理化学性质的限制,不能有效到达肿瘤。针对脑肿瘤形成和发... 详细信息

脑肿瘤中恶性肿瘤较为常见,脑瘤发展快、治疗难导致了较高的死亡率。采用化学药物治疗时,药物进入脑肿瘤组织必须通过血脑屏障和血-脑瘤屏障。一些有潜力的抗肿瘤药物由于自身物理化学性质的限制,不能有效到达肿瘤。针对脑肿瘤形成和发展不同阶段的特点,目前脑肿瘤靶向递药有3种策略:跨血脑屏障(BBB)转运递药、跨血-脑瘤屏障(BBTB)转运递药和利用实体瘤的高通透性和滞留效应(EPR效应)递药,已被广泛研究的纳米递药载体有脂质体、固体脂质纳米粒、聚合物胶束、树枝状聚合物、碳纳米管、聚合物纳米粒、磁性纳米粒等。控制载药纳米微粒粒径大小以及对其表面进行修饰可改善药物在体内的分布与滞留,提高化疗药物的疗效,降低毒副作用。多级靶向纳米递药系统有潜力成为治疗脑肿瘤的重要辅助方式。

关键词：脑肿瘤靶向纳米给药系统

Numerical simulation on gas-solid flow during circulating fluidized roasting of bauxite by a computational particle fluid dynamics method

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Particuology 2024年第7期90卷 179-188页

作者： Chengming Xie Rongbin li Qijin Wei Fengqin liu Hongliang Zhao Yongmin Zhang Hong Yong Sohn State Key Laboratory of Green and Low-carbon Metallurgy University of Science and Technology BeijingBeijing 100083China School of Metallurgical and Ecological Engineering University of Science and Technology BeijingBeijing 100083China BGRIMM Technology Group Beijing 100160China State Key Laboratory of Heavy Oil Processing China University of PetroleumBeijing102249China Department of Materials Science and Engineering The University of UtahSalt Lake CityUT 84112USA

A full-cycle numerical simulation of a circulating fluidized bed(CFB)by the use of the computational particle fluid dynamics(CPFD)method has been *** effects of the presence or absence of the secondary air,different secondary air positions,and different secondary air ratios on the gas–solid flow characteristics were *** results show that the presence of the secondary air makes a core-annular structure of the velocity distribution of particles in the fluidized bed,which enhances the uniformity of particles’distribution and the stability of *** position and the ratio of the secondary air have a significant impact on the particle distribution,particle flow rate,and gas flow rate in the fluidized *** the secondary air position and ratio are optimal,the particles,particle flow rate,and air flow rate in the CFB are evenly distributed,the gas–solid flow state is good,and the CFB can operate stably.

关键词： Circulating fluidized bed CPFD method Secondary air position Secondary air ratio Gas–solid flow characteristics