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Wuhan University Journal of Natural Sciences 2007年第2期12卷 327-332页

作者： ZHAN Caimao chen Zhiyuan BAI weibin YANG Xi College of Chemistry and Molecular Sciences WuhanUniversity Wuhan 430072 Hubei China

Soluble green light-emitting poly（9,9-dihexylfluorene- co-fluorenone） was synthesized by solvent-free oxidative coupling polymerization of 9,9-dihexylfluorene in a facile one-step reaction. The polymers were characterized by FT-IR, ^1H NMR, ^13C NMR, UV-Vis and fluorescence spectroscopy. The region-regular structure of the polymer linking at 2, 7＇-position on the fluorene moieties was obtained. The FT-IR spectra of the polymers showed fluorenone vibration. The fluorescence spectra of the solid thin film of the polymers displayed green light-emitting, which was emitted from fluorenone moieties produced in the polymerization process.

关键词： solvent-free oxidative coupling polymerization poly(9, 9-dihexylfluorene-co-fluorenone) green light-emitting

Carbon dots embedded in lead-free luminescent metal halide crystals toward single-component white emitters

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Science China Materials 2022年第10期65卷 2802-2808页

作者： weibin chen Wei Li Xuejie Zhang Chonggeng Ma Zhiguo Xia Bingfu Lei The Key Laboratory for Biobased Materials and Energy of Ministry of Education College of Materials and EnergySouth China Agricultural UniversityGuangzhou 510642China The State Key Laboratory of Luminescent Materials and Devices Guangdong Provincial Key Laboratory of Fiber Laser Materials and Applied TechniquesSchool of Physics and OptoelectronicsSouth China University of TechnologyGuangzhou 510641China Maoming Branch Guangdong Laboratory for Lingnan Modern AgricultureMaoming 525100China School of Optoelectronic Engineering and CQUPT-BUL Innovation Institute Chongqing University of Posts and TelecommunicationsChongqing 400065China

The development of single-component white emitters for white light-emitting diodes(WLEDs)remains ***,a rare earth-free white light-emitting composite is developed by assembling blue-emitting carbon dots(CDs)and yellow-emitting Cs_(2)InCl_(5)·H_(2)O:Sb^(3+)metal halide crystals via a facile liquid-liquid diffusion-assisted crystallization *** encapsulation mechanism is then *** on the ratios of blue/yellow emitters,these luminescent composites exhibit white light emission with tunable cold and warm *** composites also possess prominent ultraviolet resistance,thermal tolerance,and good stability at about 200°*** employing such“CDs in metal halide”composites as a converter,a WLED is successfully fabricated with a high color rendering index of 93.6,benefiting from the assembled blue and yellow broadband *** this strategy,the developed composites show great promise in next-generation WLED lighting.

关键词： carbon dots metal halide high color rendering index single-component white emitters

Effectiveness of ZiYin Xiehuo granules and Zishen Qinggan granules on partial precocious puberty in girls: a multicenter, randomized, single-blind, controlled trial

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Journal of Traditional Chinese Medicine 2018年第5期38卷 740-745页

作者： Sun Wen Han Xinghui Wang Yonghong Yu Jian Yan Weili Zhao Jun chen weibin Xue Zheng Traditional Chinese Medicine Department Children's Hospital of Fudan University Teaching and Research Section of Clinical Epidemiology Children's Hospital of Fudan University Department of Pediatrics Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine Department of Pediatrics YueYang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine Department of Pediatrics Shanghai Hospital of Traditional Chinese Medicine

OBJECTIVE: To evaluate the effect of ZiYin Xiehuo granules(ZYXH) and Zishen Qinggan granules(ZSQG) on partial precocious puberty(PPP).METHODS: This was a multicenter, randomized, single-blind, positive-controlled trial. A total of 143 pa-tients were assigned to either the ZYXH group or the ZSQG group using a random number table. The ZYXH group received ZYXH three times daily for 6 months and the ZSQG group received ZSQG three times daily for 6 months. Mammary nucleus diameter; the results of uterus, ovarian, and maximum follicle measures; and Chinese medicine symptom pattern scores were compared at baseline and after 3 months and 6 months of ***: After 3 months' treatment, there were no significant differences between the two groups in mammary nucleus index changes(left 3.4 ± 3.1 vs3.5 ± 3.1, P = 0.790; right 3.0 ± 2.9 vs 3.6 ± 3.0, P =0.719). The uterine volume in the ZYXH group was smaller than that in the ZSQG group(2.1 ± 1.6 vs2.6 ± 2.2, P = 0.006). There were no significant between-group differences in ovarian volume and maximum follicular diameter on either side(ovarian volume: left 1.2 ± 0.7 vs 1.3 ± 0.6, P = 0.8; right1.2 ± 0.7 vs 1.4 ± 1.1, P = 0.984; maximum follicular diameter: left 3.9 ± 1.7 vs 3.5 ± 2.2, P = 0.158; right3.5 ± 1.7 vs 3.9 ± 2.1, P = 0.314).CONCLUSION: ZYXH granules and ZSQG granules both affected the size of the mammary nucleus in girls with PPP, and improved Chinese medicine symptom patterns. ZYXH granules showed slight advantages over ZSQG granules in terms of the decrease in the size of the uterus, ovaries, and ovarian follicles.

关键词： ZiYin Xiehuo granules Partial precocious puberty Multicenter,Randomized controlled trial

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从督论治儿童注意缺陷多动障碍思路探析

新中医 2024年第12期56卷 176-181页

作者：周雅刘想张新琳陈伟斌吴欣乐瓅琳上海中医药大学附属岳阳中西医结合医院上海200437 上海市浦东新区北蔡社区卫生服务中心上海201204 安徽中医药大学安徽合肥230038

基于上海市名中医秦亮甫教授“病变在脑,首取督脉”理论,分析儿童注意缺陷多动障碍(ADHD)的病因病机。笔者认为,儿童ADHD的病机关键为动静失制、阴阳失调,而肾精不足、髓海空虚导致神机失用是该病的发病基础,治疗上应疏通督脉以调神机... 详细信息

基于上海市名中医秦亮甫教授“病变在脑,首取督脉”理论,分析儿童注意缺陷多动障碍(ADHD)的病因病机。笔者认为,儿童ADHD的病机关键为动静失制、阴阳失调,而肾精不足、髓海空虚导致神机失用是该病的发病基础,治疗上应疏通督脉以调神机。通督调神法从督论治儿童ADHD疗效显著,为中医临床诊治本病拓宽了思路。

关键词：注意缺陷多动障碍儿童从督论治通督调神秦亮甫

层间冷却对电弧增材制造钛合金构件性能的影响

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焊接 2024年第2期 26-30页

作者：赵昀梁乐孙宏伟陈卫彬张本顺江苏自动化研究所江苏连云港222006

基于钨极氩弧焊的电弧增材制造(GT-WAAM)工艺,以6 mm厚Ti6Al4V合金为基板,直径1.2 mm的Ti6Al4V焊丝为材料,利用CO_(2)进行层间冷却,得到成形均匀的沉积结构。通过对焊接过程热循环特点、沉积形貌、硬度分布及力学性能分析,获得沉积结构... 详细信息

基于钨极氩弧焊的电弧增材制造(GT-WAAM)工艺,以6 mm厚Ti6Al4V合金为基板,直径1.2 mm的Ti6Al4V焊丝为材料,利用CO_(2)进行层间冷却,得到成形均匀的沉积结构。通过对焊接过程热循环特点、沉积形貌、硬度分布及力学性能分析,获得沉积结构质量评价。结果表明,提高冷却速率可以细化沉积结构晶粒,得到针状的α′相,从而改善材料的硬度和抗拉强度;在沉积结构中,堆积高度增加产生的热积累效应,使冷却气体中的C和O元素存在与堆积金属发生潜在的化学反应的可能。采用层间冷却控制层间温度能有效改善沉积结构质量,可使制造效率提高80%以上。

关键词：电弧增材制造 Ti6Al4V合金层间冷却性能

CT影像组学特征联合机器学习预测AECOPD预后价值分析

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华北理工大学学报（医学版） 2024年第5期26卷 349-354页

作者：罗童李爰莹李泽茂孙晓川陈伟彬华北理工大学附属医院医学影像中心河北唐山063000 华北理工大学人工智能学院河北唐山063000

目的分析影像组学特征联合机器学习模型对慢性阻塞性肺疾病急性加重期(AECOPD)患者预后的预测价值。方法回顾性分析2016年7月-2021年2月于华北理工大学附属医院诊断为AECOPD的121例患者,收集其一般资料,采用Pyradiomics软件包提取胸... 详细信息

目的分析影像组学特征联合机器学习模型对慢性阻塞性肺疾病急性加重期(AECOPD)患者预后的预测价值。方法回顾性分析2016年7月-2021年2月于华北理工大学附属医院诊断为AECOPD的121例患者,收集其一般资料,采用Pyradiomics软件包提取胸部CT横断位影像组学特征。根据随访结果将患者分为预后不良组(n=59)和预后良好组(n=62)。采用Lasso回归模型对影像组学特征进行筛选降维,并计算rad_score;按7:3的比例将患者分为训练集(n=85)与测试集(n=36),分别采用LR算法、SVM算法、DT算法构建影像组学预测模型,采用ROC曲线、混淆矩阵及Delong检验,评估三种模型对AECOPD预后的预测效能并比较模型之间的差异。结果共提取出2 381个影像组学特征。Lasso回归模型结果显示,模型拟合效果最好时共包含11个影像组学特征。将这11个影像组学特征与相应的加权系数乘积的线性组合作为rad_score。分析结果显示,LR算法、SVM算法、DT算法三种模型预测AECOPD预后的效能不同,在训练集中其AUC值分别为0.858、0.774和0.767,测试集中分别为0.848、0.748、0.774;其中LR模型的AUC值均最高,约登指数显示其预测效能最优。Delong检验结果显示在训练集中和测试集中,LR模型的AUC值均高于SVM模型(0.858 vs 0.774,P=0.022;0.848 vs 0.748,P=0.011);训练集与测试集中LR模型与DT模型、SVM模型与DT模型的AUC比较差异均无统计学意义(P>0.05)。综合AUC值、约登指数与Delong检验结果,LR模型在此次研究中表现最优。结论由LR算法、SVM算法、DT算法三种机器学习算法构建的影像组学预测模型对AECOPD预后有较好的预测价值,其中LR模型最优。

关键词：影像组学慢性阻塞性肺疾病急性加重机器学习分类器

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卸压孔设置对冻结暗挖隧道冻胀卸荷影响研究

人民长江 2024年第2期55卷 146-155,170页

作者：黄建华陈伟斌严耿明福建理工大学土木工程学院福建福州350118 福建理工大学地下工程福建省高校重点实验室福建福州350118 福州大学土木工程学院福建福州350118

冻结法暗挖隧道施工中,冻胀常导致土体和隧道等发生大变形,给地铁隧道和周边环境以及建(构)筑物带来不利影响。以福州市滨海软土地层冻结暗挖隧道工程为例,通过对原型工程建模和非线性分析,综合实测数据及工程情况,分析冻胀变形分布规... 详细信息

冻结法暗挖隧道施工中,冻胀常导致土体和隧道等发生大变形,给地铁隧道和周边环境以及建(构)筑物带来不利影响。以福州市滨海软土地层冻结暗挖隧道工程为例,通过对原型工程建模和非线性分析,综合实测数据及工程情况,分析冻胀变形分布规律和设置卸压孔前后冻结暗挖隧道的位移变化特点。研究结果表明:人工冻结加固技术结合卸压孔应用,对土体冻胀力的释放和冻胀变形的控制效果较好,与没有设置卸压孔时的地层相比,卸压孔在冻土帷幕冻结交圈形成后,为土体冻胀提供自由变形空间,降低了土体的冻胀位移和冻胀应力;冻结期末2个冻结暗挖隧道中心点纵向剖面处冻胀位移最大值由28.88 mm降至16.75 mm,冻胀应力最大值由335 kPa降至265 kPa,卸压作用效果明显。研究结果可为人工冻结暗挖隧道工程提供借鉴和参考。

关键词：冻结法冻胀变形卸压孔位移场暗挖隧道

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Recent progress on mechanisms,principles,and strategies for high-activity and high-stability non-PGM fuel cell catalyst design

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Carbon Energy 2024年第5期6卷 25-52页

作者： Yuping Yuan Yun Zheng Dan Luo weibin Qiu Jiantao Wang Xin Wang Zhongwei chen GRINM(Guangdong)Institute of New Materials Technology FoshanChina Department of Chemical Engineering Waterloo Institute for NanotechnologyWaterloo Institute for Sustainable EnergyUniversity of WaterlooWaterlooOntarioCanada Guangdong Provincial Key Laboratory of Nanophotonic Functional Materials and Devices School of Information and Optoelectronic Science and EngineeringSouth China Normal UniversityGuangdongChina National Power Battery Innovation Center GRINM Group Co.Ltd.BeijingChina

The commercialization of a polymer membrane H2-O2 fuel cell and its widespread use call for the development of cost-effective oxygen reduction reaction(ORR)nonplatinum group metal(NPGM)***,to meet the requests for the real-world fuel cell application and replacing platinum catalysts,it still needs to address some challenges for NPGM catalysts regarding the sluggish ORR kinetics in the cathode and their poor durability in acidic *** response to these issues,numerous efforts have been made to study NPGM catalysts both theoretically and experimentally,developed these into the atomically dispersed coordinated metal-nitrogen-carbon(M-N-C)form over the past *** this review,we present a comprehensive summary of recent advancements on NPGM catalysts with high activity and *** design strategies in terms of optimizing active-site density and enhancing catalyst stability against demetalization and carbon corrosion are *** is also emphasized the importance of understanding the mechanisms and principles behind those strategies through a combination of theoretical modeling and experimental ***,further understanding the mechanisms related to the active-site structure and the formation process of the single-atom active site under pyrolysis conditions is critical for active-site *** the active-site distance is the basic principle for improving catalyst activity through increasing the catalyst active-site *** studies for the catalyst deactivation mechanism and modeling stable active-site structures provide both mechanisms and principles to improve the NPGM catalyst ***,currently remained challenges and perspectives in the future on designing high-performance atomically dispersed NPGM catalysts toward fuel cell application are discussed.

关键词： batteries electrocatalysis energy storage and conversion fuel cells

新医科视域下肿瘤专业医学生医工融合能力培养模式探讨

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中国综合临床 2024年第2期40卷 157-160页

作者：孙国贵陈伟彬戈艳蕾阎红灿聂怀勇赵雅宁赵亚婷黄晓红华北理工大学附属医院肿瘤放化疗科唐山063000 华北理工大学附属医院CT室唐山063000 华北理工大学附属医院呼吸与危重症医学科唐山063000 华北理工大学理学院大学计算机教学部唐山063000 华北理工大学心理与精神卫生学院唐山063000 华北理工大学护理与康复学院唐山063000 华北理工大学附属医院乳腺外科唐山063000 华北理工大学人工智能学院唐山063000

随着我国医疗改革的深入,人们对健康的需求不断增长,这推动了“新医科”的建设,对医学生的能力培养教育提出了更高的要求。医学本科教育是医学生成长的关键时期,如何在“新医科”背景下做好本科教学是目前的研究热点。临床教学阶段是医... 详细信息

随着我国医疗改革的深入,人们对健康的需求不断增长,这推动了“新医科”的建设,对医学生的能力培养教育提出了更高的要求。医学本科教育是医学生成长的关键时期,如何在“新医科”背景下做好本科教学是目前的研究热点。临床教学阶段是医学生全面了解临床各学科,培养其对专科认识的重要时期。因此,我们应该探索新的教学方法和手段,以适应新时代的需求。在“新医科”的背景下,医工融合的诊疗技术已经成为肿瘤专业临床诊疗工作的重要趋势。为了适应这一变化,肿瘤专业临床教学和教学管理也需要进行新的探索和研究。现以肿瘤专业临床教学为例,探讨如何培养医学生的医工融合能力。

关键词：新医科医工融合肿瘤专业临床教学

Magnetic coupling governed pinning directions in magnetic tunnel junctions under magnetic field annealing with zero magnetic field cooling

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Science China(Information Sciences) 2023年第4期66卷 305-306页

作者： weibin chen Shaohua YAN Zhiqiang CAO Shiyang LU Xiaonan ZHAO Runrun HAO Zitong ZHOU Zhi LI Kun ZHANG Shishen YAN Qunwen LENG School of Physics State Key Laboratory of Crystal Materials Shandong University Fert Beijing Institute MIIT Key Laboratory of Spintronics School of Integrated Circuit Science and Engineering Beihang University

With the rapid development of emerging concepts, such as the Internet of things and big data, the use of various magnetoresistance(MR) sensors, especially tunneling MR(TMR) in magnetic tunnel junctions(MTJs), for information perception is considered the critical first step. A typical topic in this field is the construction of a Wheatstone bridge structure to restrain the temperature drift and amplify the magnetic response signal.

关键词： Magnetic fields