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Wet-chemical synthesis of two-dimensional metal nanomaterials for electrocatalysis

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National Science Review 2022年第5期9卷 37-56页

作者： zijian li li Zhai Yiyao Ge Zhiqi Huang Zhenyu Shi Jiawei liu Wei Zhai Jinzhe liang Hua Zhang Department of Chemistry City University of Hong Kong Hong Kong Branch of National Precious Metals Material Engineering Research Center(NPMM) City University of Hong Kong School of Materials Science and Engineering Nanyang Technological University Shenzhen Research Institute City University of Hong Kong

Two-dimensional(2D) metal nanomaterials have gained ever-growing research interest owing to their fascinating physico chemical properties and promising application,especially in the held of ele *** this review,we briefly introduce the recent advances in wet-chemical synthesis of 2D metal ***,the catalytic performances of 2D metal nanomaterials in a variety of electrochemical reactions are ***,we summarize current challenges and highlight our perspectives on preparing high-performance 2D metal electro catalysts.

关键词： two-dimensional metal nanomaterials wet-chemical synthesis phase heterophase electrocatalysis

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岩质边坡结构面交互式识别技术与系统研发

金属矿山 2024年第1期 80-89页

作者：代永新徐全卢敬标李子健张思远杨月明中钢集团马鞍山矿山研究总院股份有限公司安徽马鞍山243000 山东大学土建与水利学院山东济南250061 非煤露天矿山灾害防控国家矿山安全监察局重点实验室安徽马鞍山243000 金属矿山安全与健康国家重点实验室安徽马鞍山243000

岩质边坡中的岩体结构面调查与分析是进行边坡稳定性分析的基础工作之一。然而,传统手段获取边坡岩体结构面存在效率低、安全性差、主观性高、数字化程度低以及流程繁琐等不足。基于三维重建SFM算法,深入研究了高精度大场景露天矿边坡... 详细信息

岩质边坡中的岩体结构面调查与分析是进行边坡稳定性分析的基础工作之一。然而,传统手段获取边坡岩体结构面存在效率低、安全性差、主观性高、数字化程度低以及流程繁琐等不足。基于三维重建SFM算法,深入研究了高精度大场景露天矿边坡岩体三维实景模型重建方法,并融合高精度边坡岩体三维实景模型中的空间和纹理特征信息,构建了以Opengl图形库为基底的可视化交互系统,实现了岩质边坡高精度三维实景模型的高效采集和可视化操作。同时,将不共线三点确定一个平面的理论应用到结构面识别中,实现岩体结构的交互式精准识别。在此基础上,开发了岩质边坡结构面识别系统,并以某露天矿边坡为研究对象,结合岩体力学基本理论深度挖掘岩体结构信息解译结果,对边坡稳定性进行了详细分析。研究结果表明:该系统能够使岩质边坡的稳定性分析与灾害防控更具有及时性、高效性、准确性,具备广泛的应用前景。

关键词：岩质边坡无人机边坡稳定性倾斜摄影结构面识别

Supramolecular Surface Engineering of Carbon Dots Enables Matrix-Free Room Temperature Phosphorescence

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Chinese Journal of Chemistry 2023年第18期41卷 2330-2336页

作者： Tao Zhang Xiaoyan Wu Lele liu Yuxiang Yang Jialuo Zhuang zijian li Hong Bi School of Chemistry and Chemical Engineering Anhui UniversityHefeiAnhui 230601China School of Materials Science and Engineering Anhui University HefeiAnhui 230601Chin

Comprehensive Summary,Carbon dots(CDs)are an emerging class of nanomaterials with intriguing photophysical ***,achieving room temperature phosphorescence(RTP)for CDs has attracted considerable attention for biomedical and information ***,the CDs based RTP materials generally require the use of polymeric and inorganic matrix to provide the rigid environments,which remains a great challenge to obtain matrix-free CDs with ***,a novel supramolecular strategy based on strong interparticle interactions has been developed to attain this objective,by covalent decoration of ureido-pyrimidinone(UPy,a multiple hydrogen bonding unit)on the surface of *** characterizations validated the core-shell structure of the as-prepared CDs(EDTA-CDs)and demonstrated the successful attachment of UPy via post-modification(UPy-CDs).The presence of UPy recognition units render the strong hydrogen bonding between UPy-CDs,which stabilizes the triplet state via rigidifying *** a result,UPy-CDs exhibit matrix-free efficient RTP(λ_(em)=534 nm)with high brightness and long lifetime(33.6 ms)in the solid *** to the dual-emission character,we further explored the application potential of UPy-CDs in information encryption and ***,this work provides a new and facile strategy for achieving matrix-free phosphorescent CDs with elegant incorporation of supramolecular chemistry.

关键词： Carbon dots Room-temperature phosphorescence Hydrogen bonds Matrix-free Supramolecular chemistry Surface chemistry

衰弱评估及其对老年胃癌手术临床结局影响的研究进展

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中华全科医师杂志 2024年第5期23卷 532-536页

作者：殷诗舒李子建马福海曹祥龙骆紫衿赵刚北京医院普通外科国家老年医学中心中国医学科学院老年医学研究院北京100730

衰弱是一种以生理储备下降和脆弱性增加为特点的非特异性状态,被广泛应用于评估老年患者术前状态。胃癌是全球常见的恶性肿瘤,老年患者日益增加,手术是可切除胃癌的首选治疗方式。老年患者因其功能下降,术后不良事件发生率高,准确评估... 详细信息

衰弱是一种以生理储备下降和脆弱性增加为特点的非特异性状态,被广泛应用于评估老年患者术前状态。胃癌是全球常见的恶性肿瘤,老年患者日益增加,手术是可切除胃癌的首选治疗方式。老年患者因其功能下降,术后不良事件发生率高,准确评估患者术前状态有望提高其手术预后。文章就衰弱评估及对老年胃癌手术临床结局的影响展开综述,阐述了目前常见的几种衰弱评估工具及不同国家和地区选择的倾向性,总结了衰弱对术后病死率、并发症、生存质量及医疗花费的影响,发现衰弱可显著增加术后短期和长期死亡率、使Clavien-Dindo(CD)分级>2患者的并发症发生率显著增高,并降低术后生存质量,但其对癌症特异性生存期及医疗花费的影响暂不明确。

关键词：老年人胃肿瘤衰弱

Hige namine as a Potential Pharmacologic Stress Age nt in the Detection of Coro nary Artery Disease

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Chinese Medical Sciences Journal 2022年第3期37卷 275-281,I0014页

作者： Nana Zhang zijian li Haibo Zhu Unstitute of Food Scienee and Technology Chinese Academy of Agricultural SciencesBeijing 100050China Institute of Vascular Medicine Peking University Third HospitalKey Laboratory of Cardiovascular Molecular Biology and Regulatory Peptides Ministry of HealthKey Laboratory of Molecular Cardiovascular Sciences Ministry of Educationand Beijing Key Laboratory of Cardiovascular Receptors ResearchBeijing 100050China State Key Laboratory for Bioactive Substances and Functions of Natural Medicines Beijing Key Laboratory of New Drug Mechanisms and Pharmacological Evaluation StudyInstitute of Materia MedicaChinese Academy of Medical Sciences&Peking Union Medical CollegeBeijing 100050China

Myocardial perfusion imaging(MPI) is valuable for the diagnosis,prognosis,and management of coronary artery disease(CAD).The most commonly used pharmacologic stress agents at present are vasodilators and adrenergic ***,these agents have contraindications and may cause adverse effects in some ***,other stress agents feasible for more patients are ***(HG) is a β-adrenergic receptor agonist currently approved for clinical trials as a stress agent for myocardial *** also has a promising value in MPI for the detection of CAD in preclinical and clinical *** review summarizes the application of HG on MPI,including its mechanism of action,stress protocol,efficacy,and safety.

关键词： coronary artery disease higenamine myocardial perfusion imaging stress agent

(NH4)3B11PO19F3: a deep-UV nonlinear optical crystal with unique [B5PO10F]∞ layers

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National Science Review 2022年第8期9卷 138-143页

作者： Bingliang Cheng zijian li Yu Chu Abudukadi Tudi Miriding Mutailipu Fangfang Zhang Zhihua Yang Shilie Pan CAS Key Laboratory of Functional Materials and Devices for Special Environments Xinjiang Technical Institute of Physics and Chemistry of Chinese Academy of Sciences Xinjiang Key Laboratory of Electronic Information Materials and Devices Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of Sciences

Deep-ultraviolet（DUV） nonlinear optical（NLO） crystals that can extend the output range of coherent light below 200 nm are pivotal materials for solid-state lasers. To date, KBe2BO3F2（KBBF） is the only usable crystal that can generate DUV coherent light by direct second harmonic generation（SHG）, but the layered growth habit and toxic ingredients limit its application. Herein, we report a new fluoroborophosphate,（NH4）3B11PO19F3（ABPF）, containing four different functional units: [BO3],[BO4], [BO3F] and [PO4]. ABPF exhibits a KBBF-like structure while eliminating the limitations of KBBF crystal. The unique [B5PO10F]∞layers enhance ABPF's performance; for example, it has a large SHG response（1.2 × KDP） and a sufficient birefringence（0.088 at 1064 nm） that enables the shortest phase-matching wavelength to reach the DUV region. Meanwhile, the introduction of strong B-O-P covalent bonds decreases the layered growth habit. These findings will enrich the structural chemistry of fluoroborophosphate and contribute to the discovery of more excellent DUV NLO crystals.

关键词： deep-ultraviolet nonlinear optical materials KBBF-like structure fluoroborophosphate

Enriching the library of axial superlattice nanowires

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Science China Materials 2021年第10期64卷 2627-2628页

作者： li Zhai zijian li Hua Zhang Department of Chemistry City University of Hong KongKowloonHong KongChina Hong Kong Branch of National Precious Metals Material Engineering Research Center(NPMM) City University of Hong KongHong KongChina Shenzhen Research Institute City University of Hong KongShenzhen 518057China

Integrating functional materials to form heterostructures with novel,sophisticated architectures has attracted extensive interest in chemistry and materials science^([1]).Heterostructures are expected to exhibit superior electrical,thermal,optical and magnetic properties due to the synergistic effect of their different ***,the rational design and preparation of heterostructures with controlled compositions,dimensions.

关键词： nanowires axial rational

基于材料成分波动的22CrMo锥齿轮渗碳淬火性能评估

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汽车工艺与材料 2024年第9期 33-40页

作者：陈冠方张星李子健季伟纪同圣肖超中国重型汽车集团有限公司汽车研究总院济南250000

以22CrMo材料锥齿轮为研究对象,通过有限元方法,研究了材料成分波动对锥齿轮渗碳淬火性能的影响。利用材料数据库软件,基于22CrMo材料元素范围的上、下限建立2组材料性能数据库;利用热处理仿真软件建立模型,并对2组材料成分的被动锥齿... 详细信息

以22CrMo材料锥齿轮为研究对象,通过有限元方法,研究了材料成分波动对锥齿轮渗碳淬火性能的影响。利用材料数据库软件,基于22CrMo材料元素范围的上、下限建立2组材料性能数据库;利用热处理仿真软件建立模型,并对2组材料成分的被动锥齿轮进行渗碳淬火仿真,对比分析了锥齿轮渗碳淬火后表层碳浓度、微观组织演化及齿轮变形等数据。结果表明,材料成分波动对22CrMo锥齿轮淬火后的相组织分布以及齿轮变形量影响较大,对渗碳层影响较小。

关键词： 22CrMo 被动锥齿轮渗碳淬火仿真热处理仿真软件材料数据库软件

Angiotensin-converting enzyme 2(ACE2):SARS-CoV-2 receptor and RAS modulator

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Acta Pharmaceutica Sinica B 2021年第1期11卷 1-12页

作者： Jingwei Bian zijian li Department of Cardiology and Institute of Vascular Medicine Peking University Third HospitalKey Laboratory of Cardiovascular Molecular Biology and Regulatory PeptidesMinistry of HealthKey Laboratory of Molecular Cardiovascular SciencesMinistry of EducationBeijing Key Laboratory of Cardiovascular Receptors ResearchBeijing 100191China Department of Pharmacy Peking University Third HospitalBeijing 100191China

The coronavirus disease 2019(COVID-19)outbreak is caused by severe acute respiratory syndrome coronavirus 2(SARS-CoV-2).Angiotensin-converting enzyme 2(ACE2)was rapidly identified as the critical functional receptor for ***2 is well-known as a counter-regulator of the renin-angiotensin system(RAS)and plays a key role in the cardiovascular *** that ACE2 functions as both a SARS-CoV-2 receptor and a RAS modulator,the treatment for COVID-19 presents a dilemma of how to limit virus entry but protect ACE2 physiological ***,an in-depth summary of the recent progress of ACE2 research and its relationship to the virus is urgently needed to provide possible solution to the ***,we summarize the complexity and interplay between the coronavirus,ACE2 and RAS(including anti-RAS drugs).We propose five novel working modes for functional receptor for SARS-CoV-2 infection and the routes of ACE2-mediated virus entering host cells,as well as its regulatory *** the controversy of anti-RAS drugs application,we also give theoretical analysis and discussed for drug *** will contribute to a deeper understanding of the complex mechanisms of underlying the relationship between the virus and ACE2,and provide guidance for virus intervention strategies.

关键词： SARS-CoV-2 Angiotensin-converting enzyme 2 Renin-angiotensin system Receptor Modulator COVID-19 Anti-RAS drug Drug target