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Enhanced reversible hydrogen storage properties of wrinkled graphene microflowers confined LiBH_(4) system with high volumetric hydrogen storage capacity

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Materials Reports(Energy) 2024年第1期4卷 79-88页

作者： Zhenglong Li Kaicheng Xian Hao Chen Mingxia Gao Shanqing Qu meihong wu Yaxiong Yang Wenping Sun Chao Gao Yongfeng Liu Xin Zhang Hongge Pan Institute of Science and Technology for New Energy Xi'an Technological UniversityXi'an710021PR China State Key Laboratory of Silicon and Advanced Semiconductor Materials Key Laboratory of Advanced Materials and Applications for Batteries of Zhejiang ProvinceSchool of Materials Science and EngineeringZhejiang UniversityHangzhou310027PR China Department of Polymer Science and Engineering MOE Key Laboratory of Macromolecular Synthesis and FunctionalizationZhejiang UniversityHangzhou310027PR China

LiBH_(4)with high hydrogen storage density,is regarded as one of the most promising hydrogen storage ***,it suffers from high dehydrogenation temperature and poor reversibility for practical *** is effective in achieving low dehydrogenation temperature and favorable ***,graphene can serve as supporting materials for LiBH_(4)catalysts and also destabilize LiBH_(4)via interfacial ***,graphene has never been used alone as a frame material for nanoconfining LiBH_(4).In this study,graphene microflowers with large pore volumes were prepared and used as nanoconfinement framework material for LiBH_(4),and the nanoconfinement effect of graphene was *** loading 70 wt%of LiBH_(4) and mechanically compressed at 350 MPa,8.0 wt% of H2 can be released within 100 min at 320C,corresponding to the highest volumetric hydrogen storage density of 94.9 g H2 L^(-1)ever *** to the nanoconfinement of graphene,the rate-limiting step of dehydrogenation of nanoconfined LiBH_(4) was changed and its apparent activation energy of the dehydrogenation(107.3 kJ mol^(-1))was 42%lower than that of pure LiBH_(4).Moreover,the formation of the intermediate Li_(2)B_(12)H_(12) was effectively inhibited,and the stable nanoconfined structure enhanced the reversibility of LiBH_(4).This work widens the understanding of graphene's nanoconfinement effect and provides new insights for developing high-density hydrogen storage materials.

关键词： Hydrogen storage LiBH_(4) Nanoconfinement Graphene High capacity

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何以理解:国际理解教育的认知原点及实践路向

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中国教育学刊 2024年第5期 54-59页

作者：吴梅红北京外国语大学国际新闻与传播学院北京100089

重回“理解”这一认知与实践的原点,从理解的本质和规律出发,从文化的表层结构转向文化的深层结构,是对国际理解教育的理论与实践的重要拓展,也是重构国际理解教育之必要性的现实逻辑。文化是国际理解的中心,也是国际理解教育的情境,通... 详细信息

重回“理解”这一认知与实践的原点,从理解的本质和规律出发,从文化的表层结构转向文化的深层结构,是对国际理解教育的理论与实践的重要拓展,也是重构国际理解教育之必要性的现实逻辑。文化是国际理解的中心,也是国际理解教育的情境,通过教育促进师生当下与未来对世界文化理解的视域融合。在此基础上,尝试提出构建历时性与共时性兼具的“一体化”国际理解教育体系,以及以媒介在场与社会在场为特征的“在场式”教育实践。国际理解教育还应立足本民族文化,注重共通感的培养,其外延也应从传统的家校社拓展到一切人及其表达形式,尤其重视学生的数字素养的提升。

关键词：国际理解文化结构视域融合共通感人类命运共同体

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Viewpoints of Reading and the Teaching of EFL Reading

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国际商务（对外经济贸易大学学报） 1990年第4期 34-42,49页

作者： wu meihong

The significance of reading is obvious. For one thing, reading is a principal way of getting knowledge in this age of information explosion. Although we have such modern means as radios and television to spread inform... 详细信息

关键词：责任

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基于每日症状指数的动态监测预测儿童青少年抑郁症重复经颅磁刺激疗效的回顾性队列研究

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中国循证儿科杂志 2024年第3期19卷 173-178页

作者：蒲犇江浩邬梅红胡旭姣方晶晶许咸加宁波市民康医院精神科宁波315032 宁波市民康医院护理部宁波315032 宁波大学附属人民医院宁波315000

背景重复经颅磁刺激(rTMS)+抗抑郁药物已成为治疗儿童和青少年抑郁症的新兴疗法,但如何早期预测疗效仍是一大挑战。目的探讨rTMS+抗抑郁药物治疗过程中预测远期疗效的潜在因子。设计回顾性队列研究。方法首次诊断中重度单相或双相抑郁... 详细信息

背景重复经颅磁刺激(rTMS)+抗抑郁药物已成为治疗儿童和青少年抑郁症的新兴疗法,但如何早期预测疗效仍是一大挑战。目的探讨rTMS+抗抑郁药物治疗过程中预测远期疗效的潜在因子。设计回顾性队列研究。方法首次诊断中重度单相或双相抑郁症的年龄0.05);DI-5和HAMD基线分数应答组较未应答组差异均无统计学意义(P>0.05);第20次rTMS治疗后DI-5分数应答组较未应答组差异有统计学意义(P<0.001);HAMD最后1次评分应答组较未应答组差异有统计学意义(P<0.001)。第11次rTMS治疗时DI-5分数应答组较未应答组DI-5分数差异有统计学意义(P<0.001),应答组较未应答组DI-5中位数分数减少2分并以此作为分层依据,DI-5量表减少分数<2分组107例(46.9%)在第20次rTMS治疗时有98.1%的概率为未应答,DI-5量表减少分数≥2分组64例(87.4%)在第20次TMS治疗时有89.2%的概率为应答。结论第11次rTMS较治疗前DI-5减分≥2分可能是预测儿童青少年抑郁症rTMS+抗抑郁药物疗效的早期预测因子。

关键词：重复经颅磁刺激儿童青少年抑郁症结局预测每日症状指数

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Myopathological features in MELAS syndrome without significant changes in muscle biopsy pathology

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Neural Regeneration Research 2010年第21期5卷 1673-1677页

作者： Pu Fang Chengsi wu meihong Zhou Renshi Xu Xianhua Liu Caixia Wei Department of Neurology First Hospital of Nanchang University Nanchang 330006 Jiangxi Province China

Mitochondrial encephalomyopathy, lactic acidosis, and stroke-like episodes （MELAS） are common types of mitochondrial encephalomyopathy. The involved muscular pathology is characterized by typical changes of mitochondrial abnormalities. Gene screening has been the gold diagnostic standard for MELAS diagnosis. This study presents three primary MELAS patients, with an age of onset from 13 to 18 years, including one patient with seizure, and two with headache and vomiting. All patients had a family history of disease, with maternal inheritance. Cerebral magnetic resonance imaging revealed abnormally high signals in T2-weighted images： temporal lobe in three cases, occipital lobe in two cases, and parietal lobe in one case. Migrating stroke-like lesions were confirmed in one patient. Muscle biopsy revealed several strongly succinate dehydrogenase-reactive vessels scattered in muscle sections of three patients, but ragged-red fibers and cytochrome c oxidase-negative/dense （COX-/＋） fibers were not observed. Mitochondrial DNA A3243G mutation was identified in all three cases. MELAS syndrome has obvious clinical heterogeneity, and muscle weakness was not prominent in some of the cases. Muscle pathological changes did not accompany ragged-red fibers or COX-/＋ fibers, but succinate dehydrogenase- reactive vessels are important for MELAS diagnosis.

关键词： mitochondrial encephalomyopathy, lactic acidosis, and stroke-like episodes syndrome muscle biopsy neuroimaging pathology

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Combining Block and Corner Features for Content-Based Trademark Retrieval

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wuhan University Journal of Natural Sciences 2007年第5期12卷 907-911页

作者： HONG Zhiling JIANG Qingshan wu meihong School of Information Science and Technology Xiamen University Xiamen 361005 Fujian China School of Software Xiamen University Xiamen 361005 Fujian China

In order to retrieve a similarly look trademark from a large trademark database, an automatic content based trademark retrieval method using block hit statistic and comer Delaunay Triangulation features was proposed. The block features are derived from the hit statistic on a series of concentric ellipse. The comers are detected based on an enhanced SUSAN （Smallest Univalue Segment Assimilating Nucleus） algorithm and the Delaunay Triangulation of comer points are used as the comer features. Experiments have been conducted on the MPEG-7 Core Experiment CE-Shape-1 database of 1 400 images and a trademark database of 2 000 images. The retrieval results are very encouraging.

关键词： content-based image retrieval trademark concentric ellipse enhanced SUSAN

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High-loading, ultrafine Ni nanoparticles dispersed on porous hollow carbon nanospheres for fast (de)hydrogenation kinetics of MgH_(2)

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Journal of Magnesium and Alloys 2022年第12期10卷 3354-3366页

作者： Shun Wang Mingxia Gao Zhihao Yao Kaicheng Xian meihong wu Yongfeng Liu Wenping Sun Hongge Pan State Key Laboratory of Silicon Materials Key Laboratory of Advanced Materials and Applications for Batteries of Zhejiang Province&School of Materials Science and EngineeringZhejiang UniversityHangzhou 310027P.R.China

Magnesium hydride(MgH2) is one of the most promising hydrogen storage materials for practical application due to its favorable reversibility, low cost and environmental benign;however, it suffers from high dehydrogenation temperature and slow sorption *** proper catalysts with high and sustainable activity is extremely desired for substantially improving the hydrogen storage properties of MgH2. In this work, a composite catalyst with high-loading of ultrafine Ni nanoparticles(NPs) uniformly dispersed on porous hollow carbon nanospheres is developed, which shows superior catalytic activity towards the de-/hydrogenation of MgH2. With an addition of 5wt% of the composite, which contains 90 wt% Ni NPs, the onset and peak dehydrogenation temperatures of MgH2are lowered to 190 and 242 ℃, respectively. 6.2 wt% H2is rapidly released within 30 min at 250 ℃. The amount of H2that the dehydrogenation product can absorb at a low temperature of 150 ℃ in only 250 s is very close to the initial dehydrogenation value. A dehydrogenation capacity of 6.4wt% remains after 50 cycles at a moderate cyclic regime, corresponding to a capacity retention of 94.1%. The Ni NPs are highly active,reacting with MgH2and forming nanosized Mg2Ni/Mg2NiH4. They act as catalysts during hydrogen sorption cycling, and maintain a high dispersibility with the help of the dispersive role of the carbon substrate, leading to sustainably catalytic activity. The present work provides new insight into designing stable and highly active catalysts for promoting the(de)hydrogenation kinetics of MgH2.

关键词： Hydrogen storage materials Nano-catalysis Magnesium hydride Porous hollow carbon nanospheres Ni nanoparticles

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“自我督导”教学法在肿瘤内科住培教学中的应用

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中国继续医学教育 2024年第19期16卷 56-59页

作者：王一然王斌彭小波吴梅红冯丹湛先保海军军医大学第一附属医院肿瘤科上海200433

目的分析“自我督导”教学法在肿瘤内科住培中的教学效果。方法选取2022年5月—2023年4月进入上海长海医院肿瘤内科住培的130名内科医师分为2组,奇数月份轮转住培生为对照组,共67人;偶数月份轮转住培生为试验组,共63人。对照组住培生使... 详细信息

目的分析“自我督导”教学法在肿瘤内科住培中的教学效果。方法选取2022年5月—2023年4月进入上海长海医院肿瘤内科住培的130名内科医师分为2组,奇数月份轮转住培生为对照组,共67人;偶数月份轮转住培生为试验组,共63人。对照组住培生使用常规教学法进行教学,试验组住培生使用“自我督导”教学法进行教学。分析2组住培生肿瘤内科轮转后的出科考核成绩以及教学满意度。结果试验组的出科考核总成绩为(81.3±7.4)分,对照组的成绩(78.7±9.8)分,差异无统计学意义(P>0.05)。其中试验组的理论考核成绩(82.3±12.2)分,优于对照组的(77.2±14.2)分(P<0.05)差异有统计学意义。试验组住培生的教学总满意度为(86.0±6.7)分,高于对照组的(81.5±8.6)分(P<0.05)差异有统计学意义。结论采用“自我督导”教学法,有助于促进住培生对肿瘤内科知识的学习,锻炼其临床工作能力,提高教学满意度。

关键词：住院医师自我督导规范化培训肿瘤内科教学改革满意度

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老龄化对F0轮廓线索在汉语言语识别去掩蔽作用的影响

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心理学报 2023年第1期55卷 94-105页

作者：吴梅红厦门大学信息学院厦门大学心理学研究所厦门361005

动态基频(F0)轮廓有助于嘈杂环境下的言语识别,可以作为将目标语音从背景声中分离的知觉线索。本研究通过评估老年人与年轻人在言语掩蔽下聆听具有自然动态F0轮廓与对F0轮廓操作调节后的汉语语句的言语识别能力,探讨老龄化对F0轮廓线索... 详细信息

动态基频(F0)轮廓有助于嘈杂环境下的言语识别,可以作为将目标语音从背景声中分离的知觉线索。本研究通过评估老年人与年轻人在言语掩蔽下聆听具有自然动态F0轮廓与对F0轮廓操作调节后的汉语语句的言语识别能力,探讨老龄化对F0轮廓线索在汉语言语识别去掩蔽作用中的影响。结果显示,在言语掩蔽下自然动态的F0轮廓比压扁或拉伸的F0轮廓更能帮助年轻人抵抗信息掩蔽识别目标言语;而老年人在言语掩蔽下却难以从动态F0轮廓线索中受益。研究结果揭示了老年人利用F0轮廓线索促进掩蔽下言语感知能力的老化特点。

关键词：汉语言语识别 F0轮廓线索老龄化言语掩蔽去掩蔽

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Inhalable iron redox cycling powered nanoreactor for amplified ferroptosis-apoptosis synergetic therapy of lung cancer

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Nano Research 2024年第6期17卷 5435-5451页

作者： Linjing wu Wenhao Wang Mengqin Guo Fangqin Fu Wenhua Wang Tszching Sung meihong Zhang Ziqiao Zhong Chuanbin wu Xin Pan Zhengwei Huang College of Pharmacy Jinan UniversityGuangzhou 511436China School of Pharmaceutical Sciences Sun Yat-sen UniversityGuangzhou 510006China

Fenton reaction centered ferroptosis-apoptosis synergetic therapy has emerged as a promising tumor elimination ***,the low intracellular Fenton level and accumulation of therapeutics at the lesion site greatly limit the efficacy of ferroptosis *** overcome these two bottlenecks,an inhalable metal polyphenol network(MPN)-hybrid liposome,encoded as LDG,was proposed for enhancing the intracellular Fenton reaction level by co-delivering the ferroptosis inducer dihydroartemisinin(DHA)and the ferrous ion(Fe2+)donor *** synthesized LDG had excellent nebulization performance which significantly improved the accumulation in the lungs,about 8.2 times of intravenous *** terms of anticancer mechanisms,MPN raised the intracellular level of Fe2+by constructing iron cycling in the weakly acidic environment of *** by Fe2+,DHA with peroxide-bridge structure underwent a high level of Fenton-like reaction,promoted the production of intracellular reactive oxygen species(ROS)and induced strong ferroptosis while cooperating with *** exhibited extraordinary antitumor ability in an orthotopic lung tumor model,whose tumor inhibition efficiency was 1.53(P=0.0014)and 1.32(P=0.0183)times of the LG group(liposomes coated with gallic acid(GA)-Fe MPN)and LD group(liposomes loaded with DHA),respectively,showing the strongest anticancer *** conclusion,the constructed MPN-hybrid liposomes could be a potent custom nanoplatform for pulmonary delivery and underscored the great potential of ferroptosis-apoptosis synergetic therapy.

关键词： lung cancer pulmonary delivery ferroptosis metallic polyphenol network

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