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Oxidization-induced structural optimization of Ni_(3)Fe-N-C derived from 3D covalent organic framework for high-efficiency and durable oxygen evolution reaction

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Nano Research 2023年第5期16卷 6710-6720页

作者： Haibing Meng Bin Wu Tianxiao Sun Long Wei Yunlong Zhang Bo liu Kai Chen Zhen-Bo Wang Shuhui Sun Chunru Wang Xian-ming Zhang College of Chemistry Taiyuan University of TechnologyTaiyuan 030024China Helmholtz-Zentrum Berlin für Materialien und Energie GmbH Albert-Einstein-Straße 15Berlin 12489Germany Institute of Physics Humboldt University BerlinNewton-Straße 15Berlin 12489Germany National Synchrotron Radiation Laboratory University of Science and Technology of ChinaHefei 230026China MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage School of Chemistry and Chemical EngineeringHarbin Institute of TechnologyHarbin 150001China Institute National de La Recherche Scientifique(INRS)-CentreÉnergie Matériaux Télécommunications VarennesQC J3X 1P7Canada Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of Molecular Nanostructure and NanotechnologyInstitute of ChemistryChinese Academy of SciencesBeijing 100190China

NiFe composites have been regarded as promising candidates to replace commercial noble-based electrocatalysts for the oxygen evolution reaction(OER).However,their practical applications still suffer from poor conductivity,limited activity,*** address these issues,herein,by utilizing three-dimensional covalent organic framework(3D-COF)with porous confined structures and abundant coordinate N sites as the precursor,the partially oxidized Ni_(3)Fe nanoalloys wrapped by Ndoped carbon(N-C)layers are constructed via simple pyrolysis and subsequent *** from the 3D curved hierarchical structure,high-conductivity of Ni_(3)Fe and N-C layers,well-distributed active sites,the as-synthesized O-Ni_(3)Fe-NC catalyst demonstrates excellent activity and durability for catalyzing *** and theoretical analyses disclose that both high-temperature oxidization and the OER process greatly promote the formation and exposure of the Ni(Fe)OOH active species as well as lower charge transfer resistance,inducing its optimized OER *** robust graphitized N-C layers with superior conductivity and their couplings with oxidized Ni_(3)Fe nanoalloys are beneficial for stabilizing catalytic centers,thereby imparting O-Ni_(3)Fe-N-C with such outstanding *** work not only provides a rational guidance for enriching and stabilizing high-activity catalytic sites towards OER but also offers more insights into the structural evolution of NiFe-based OER catalysts.

关键词： three-dimensional covalent organic framework(3D-COF) Ni_(3)Fe graphitized N-C layer structure optimization durability

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Inflammatory biomarkers and cerebral small vessel disease:a community-based cohort study

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Stroke & Vascular Neurology 2022年第4期7卷 302-309,I0009-I0014页

作者： Ding-Ding Zhang Yuan Cao Jing-Yu Mu Yi-ming liu Feng Gao Fei Han Fei-Fei Zhai Li-Xin Zhou Jun Ni ming Yao ming-Li Li Zheng-Yu Jin Shu-Yang Zhang Li-Ying Cui Yong Shen Yi-Cheng Zhu Central Research Laboratory State Key Laboratory of Complex Severe and Rare DiseasesPeking Union Medical College HospitalChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina Department of Neurology State Key Laboratory of Complex Severe and Rare DiseasesPeking Union Medical College HospitalChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina Division of Life Sciences and Medicine Institute on Aging and Brain DisordersThe First Affiliated Hospital of USTCUniversity of Science and Technology of ChinaHefeiChina Department of Radiology State Key Laboratory of Complex Severe and Rare DiseasesPeking Union Medical College HospitalChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina Department of Cardiology State Key Laboratory of Complex Severe and Rare DiseasesPeking Union Medical College HospitalChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina

Background and purpose Although inflammation has been proposed to be a candidate risk factor for cerebral small vessel disease(CSVD),previous findings remain largely inconclusive and vary according to disease status and study *** present study aimed to investigate possible associations between inflammatory biomarkers and MRI markers of *** A group of 15 serum inflammatory biomarkers representing a variety of those putatively involved in the inflammatory cascade was grouped and assessed in a cross-sectional study involving 960 stroke-free *** biomarker panel was grouped as follows:systemic inflammation(high-sensitivity C reactive protein(hsCRP),interleukin 6 and tumour necrosis factorα),endothelial-related inflammation(E-selectin,P-selectin,intercellular adhesion molecule 1,vascular cell adhesion molecule 1(VCAM-1),CD40 ligand,lipoprotein-associated phospholipase A2,chitinase-3-like 1 protein and total homocysteine(tHCY))and media-related inflammation(matrix metalloproteinases 2,3 and 9,and osteopontin).The association(s)between different inflammatory groups and white matter hyperintensity(WMH),lacunes,cerebral microbleeds(CMBs),enlarged perivascular space(PVS)and the number of deep medullary veins(DMVs)were *** High levels of serum endothelial-related inflammatory biomarkers were associated with both increased WMH volume(R^(2)=0.435,p=0.015)and the presence of lacunes(R^(2)=0.254,p=0.027).Backward stepwise elimination of individual inflammatory biomarkers for endothelial-related biomarkers revealed that VCAM-1 was significant for WMH(β=0.063,p=0.005)and tHCY was significant for lacunes(β=0.069,p<0.001).There was no association between any group of inflammatory biomarkers and CMBs or *** inflammatory biomarkers were associated with fewer DMVs(R^(2)=0.032,p=0.006),and backward stepwise elimination of individual systemic-related inflammatory biomarkers revealed that hsCRP(β=−0.162,p=0.007)was *** WM

关键词： inflammation cerebral stepwise

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Tough Hydrogen Bonding Crosslinked Poly(3-fluorothiophene)Network via Electrosynthesis for High-performance Electrochromic Supercapacitors

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Chinese Journal of Polymer Science 2024年第11期42卷 1749-1757,I0011页

作者： Chun-Hui Du Yu-Hua Xu Hui Li Zhi-Xin Wu Han-Jun Yang Xi-Mei liu Bao-Yang Lu Guang-ming Nie Ge Zhang Jiangxi Key Lab of Flexible Electronics Flexible Electronics Innovation InstituteJiangxi Science&Technology Normal UniversityNanchang330013China Key Laboratory of Optic-Electric Sensing and Analytical Chemistry for Life Science MOEState Key Laboratory Base of Eco-chemical EngineeringCollege of Chemistry and Molecular EngineeringQingdao University of Science and TechnologyQingdao266042China

As a type of bi-functional device,electrochromic supercapacitors(EC-SCs)have attracted extensive attention in diverse applications such as flexible ***,despite recent encouraging progress,rational design and development of high-performance EC-SC materials with desirable stability remain challenging for practical ***,we propose a fluorination strategy to develop high-performance EC-SC materials with tough hydrogen bonding cross-linked intermolecular polymer network by one-step electrosynthesis of *** electrosynthesized free-standing poly(3-fluorothiophene)(PFT)films simultaneously achieve high electrochromic performance(optical contrast 42%at 560 nm with reversible color changes between purple and blue),and good capacitance property(290 F·g^(-1),1 A·g^(-1)),as well as outstanding cyclic stability(<2%reduction after 20000 cycles).We further demonstrate the fabrication of PFT-based flexible electrochromic supercapacitor devices(FESDs),and the resultant devices can be used to visually monitor the energy storage state in real-time and maintain outstanding stability under mechanical distortion like *** a tough fluorination hydrogen bonding cross-linking strategy may provide a new design concept for high-performance EC-SC materials and reliable FESDs toward practical applications.

关键词： Flexible electrochromic-supercapacitors Conducting polymers Hydrogen bonding crosslinking Electrosynthesis Polythiophene

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Triptolide prolonged allogeneic islet graft survival in chemically induced and spontaneously diabetic mice without impairment of islet function

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Hepatobiliary & Pancreatic Diseases International 2010年第3期9卷 312-318页

作者： Xin, ming-Jun Cui, Shi-Hua liu, Shuang Sun, Hai-Chen Li, Fei Sun, Jia-Bang Luo, Bin Capital Med Univ Dept Gen Surg Xuanwu Hosp Beijing 100053 Peoples R China Qingdao Municiple Hosp Dept Hepatobiliary Surg Qingdao 266011 Peoples R China Peking Univ Sch Clin Shougang Hosp Dept Surg Beijing 100144 Peoples R China

BACKGROUND: Triptolide (TPT) is a diterpenoid triepoxide extracted from the Chinese herb Tripterygium wilfordii Hook. F. It exhibits potent immunosuppressive and anti-inflammatory properties. This study was undertaken to investigate its effects on prolongation of islet allograft survival in rodents. Additionally, we investigated whether TPT would be toxic to islet function in vivo. METHODS: We transplanted BALB/c islets to either chemically induced diabetic C57BL/6 mice or spontaneously diabetic non-obese diabetic (NOD) mice. TPT was injected within 2 weeks or continuously, until rejection, in the two combinations. Then, we evaluated the toxicity of TPT on islet function by daily injection to naive BALB/c or diabetic BALB/c that was cured by syngeneic islet transplantation under the kidney capsule. Mice injected with cyclosporine A (CsA) or vehicle served as controls. Intraperitoneal glucose tolerance tests (IPGTTs) performed at 4 and 8 weeks in the naive BALB/c group, and at 2, 4, 6, and 8 weeks in the syngeneic transplanted group. RESULTS: The medium survival time of islets allograft from TPT treated C57BL/6 and NOD recipients were 28.5 days (range 24-30 days, n=10) and 33.0 days (range 15-47 days, n=6), respectively, and they were significantly different from those of the vehicle treated controls, which were 14.0 days (range 13-16 days, n=6) and 5.0 days (range 4-10 days, n=6), respectively (all P<0.0001). The IPGTT demonstrated that there was no difference between the TPT treated and vehicle treated groups, either in the normal or syngeneic transplanted islet BALB/c mice. However, CsA injection impaired islet function in both normal and syngeneic transplanted mice as early as 4 weeks. CONCLUSION: TPT prolonged islets allograft survival in a chemically induced diabetic or an autoimmune diabetic murine model without impairment of islet function. (Hepatobiliary Pancreat Dis Int 2010; 9: 312-318)

关键词： glucose tolerance test immunosuppression islet transplantation non-obese diabetic mice triptolide

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中老年慢性病患者服药依从性风险列线图模型的构建与验证

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济宁医学院学报 2025年第1期48卷 32-37页

作者：邵明董奥奇刘欢潘玲玲徐勤陶秀彬周志庆皖南医学院研究生学院芜湖241002 皖南医学院第一附属医院(弋矶山医院)血液净化中心芜湖241001 皖南医学院第一附属医院(弋矶山医院)心血管内科芜湖241001 皖南医学院第一附属医院(弋矶山医院)介入科芜湖241001 皖南医学院第一附属医院(弋矶山医院)护理部芜湖241001

目的探究中老年慢性病患者服药依从性现状及其影响因素,构建并验证风险预测模型,为提升中老年慢性病患者服药依从性提供借鉴。方法采取便利抽样法,选取2023年9月—2024年4月在皖南医学院第一、第二附属医院的1030名中老年慢性病患者为... 详细信息

目的探究中老年慢性病患者服药依从性现状及其影响因素,构建并验证风险预测模型,为提升中老年慢性病患者服药依从性提供借鉴。方法采取便利抽样法,选取2023年9月—2024年4月在皖南医学院第一、第二附属医院的1030名中老年慢性病患者为研究对象。采用一般资料调查表、服药依从性量表、衰弱量表、社会衰弱量表、主观认知功能量表,分析中老年慢性病患者服依从性的影响因素,构建并验证风险预测模型。结果1030名中老年慢性病患者中服药依从性好者515(50.0%)名。单因素分析结果显示,不同居住地、自理程度、衰弱、社会衰弱、主观认知功能是服药依从性的影响因素(P<0.05)。多因素logistic回归分析显示,衰弱(OR=1.970)、社会衰弱(OR=1.559)、主观认知功能下降(OR=2.141)是中老年慢性病患者服药依从性的危险因素(P<0.05)。基于上述的危险因素构建列线图预测模型,H-L检验中χ^(2)=1.418,P=0.710,ROC曲线下面积为0.671(95%CI:0.639~0.703);校准曲线显示模型预测发生概率与实际发生概率一致性良好;决策曲线显示模型具有较好的实用性。结论构建的风险预测列线图模型具有较好的预测价值,可为中老年慢性病患者的服药依从性的干预提供一定的参考意见。

关键词：中老年慢性病服药依从性预测模型

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Triazine-based multicomponent metallacages with tunable structures for SO_(2) selective capture and conversion

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Aggregate 2024年第1期5卷 270-279页

作者： Ruoqian Zhang Dingyue Hu Yu Fu Qian Feng Chaoqun Mu Kai Gao Heping Ma ming liu mingming Zhang State Key Laboratory for Mechanical Behavior of Materials Shaanxi International Research Center for Soft MatterSchool of Materials Science and EngineeringXi’an Jiaotong UniversityXi’anP.R.China Department of Chemistry Hangzhou Global Scientific and Technological Innovation Center(HIC)Zhejiang UniversityHangzhouP.R.China School of Chemical Engineering and Technology Xi’an Jiaotong UniversityXi’anP.R.China

The design of novel materials for sulfur dioxide(SO_(2))capture and conversion with considerable efficiency under mild conditions is of great significance for human health and environmental protection yet highly ***,we report a series of triazine-based multicomponent metallacages via coordination-driven self-assembly of 2,4,6-tri(4-pyridyl)-1,3,5-triazine,cis-Pt(PEt3)2(OTf)2 and different tetracarboxylic *** the increase of the length of the tetracarboxylates,the structures of the metallacages change from pyramids to extended *** to their N-rich structure,these metallacages are further used for selective SO_(2)capture,showing good adsorption capacity and remarkable SO_(2)/CO_(2)selectivity in ambient conditions,suggesting their potential applications toward real flue gas *** metallacages are further employed for the conversion of SO_(2)into value-added compounds,showing exceptional efficiency even dilute SO_(2)is used as the *** study represents a type of structure-tunable triazinebased metallacages for SO_(2)capture and conversion,which will pave the way on the applications of metal-organic complexes for gas adsorption.

关键词： multicomponent metallacages self-assembly SO_(2) adsorption SO_(2) conversion tunable structures

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Elevated serum growth differentiation factor 15 in multiple system atrophy patients:A case control study

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World Journal of Clinical Cases 2020年第12期8卷 2473-2483页

作者： Tao Yue Hui Lu Xiao-Mei Yao Xia Du Ling-Ling Wang Dan-Dan Guo Yi-ming liu Department of Neurology Qilu HospitalCheeloo College of MedicineShandong UniversityJinan 250012Shandong ProvinceChina Department of Gerontology Zibo Central HospitalZibo 255036Shandong ProvinceChina Department of Ophthalmology Zibo Central HospitalZibo 255036Shandong ProvinceChina Department of Gerontology Jinan Central HospitalCheeloo College of MedicineShandong UniversityJinan 250013Shandong ProvinceChina Department of Neurology Jinan Central Hospital Affiliated to Shandong UniversityJinan 250013Shandong ProvinceChina Department of Neurology Yantaishan HospitalYantai 264001Shandong ProvinceChina

BACKGROUND Multiple system atrophy(MSA) is a serious progressive neurodegenerative disease. Early diagnosis of MSA is very difficult, and diagnostic biomarkers are limited. Growth differentiation factor 15(GDF15) is involved in the differentiation and progression of the central nervous system, and is widely distributed in peripheral blood, which may be a novel biomarker for *** To determine serum GDF15 levels, related factors and their potential diagnostic value in MSA patients, compared with Parkinson’s disease(PD) patients and healthy *** A case-control study was conducted, including 49 MSA patients, 50 PD patients and 50 healthy controls. Serum GDF15 levels were measured by human enzymelinked immunosorbent assay, and the differences between the MSA, PD and control groups were analyzed. Further investigations were performed in different MSA subgroups according to age of onset, sex, clinical subtypes, diagnostic criteria, and disease duration. Receiver-operating characteristic curve analysiswas used to evaluate the diagnostic value of GDF15, especially for the differential diagnosis between MSA and *** Serum GDF15 levels were significantly higher in MSA patients than in PD patients and healthy controls(P = 0.000). Males and those with a disease duration of more than three years showed higher serum GDF15 levels(P = 0.043 and 0.000;respectively). Serum GDF15 levels may be a potential diagnostic biomarker for MSA patients compared with healthy controls and PD patients(cutoff: 470.42 pg/m L, sensitivity: 85.7%, specificity: 88.0%;cutoff: 1075.91 pg/m L, sensitivity:51.0%, specificity: 96.0%;respectively).CONCLUSION Serum GDF15 levels are significantly higher in MSA patients and provide suggestions on the etiology of MSA.

关键词： Multiple system atrophy Parkinson’s disease Serum growth differentiation factor 15 Biomarker Receiver-operating characteristic curve Neurodegenerative disease

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Radiation heat transfer model for complex superalloy turbine blade in directional solidification process based on finite element method

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China Foundry 2016年第2期13卷 123-132页

作者： Dun-ming Liao liu Cao Tao Chen Fei Sun Yong-zhen Jia Zi-hao Teng Yu-long Tang State Key Laboratory of Materials Processing and Die & Mould Technology Huazhong University of Science and Technology

For the sake of a more accurate shell boundary and calculation of radiation heat transfer in the Directional Solidification(DS) process, a radiation heat transfer model based on the Finite Element Method(FEM)is developed in this study. Key technologies, such as distinguishing boundaries automatically, local matrix and lumped heat capacity matrix, are also stated. In order to analyze the effect of withdrawing rate on DS process,the solidification processes of a complex superalloy turbine blade in the High Rate Solidification(HRS) process with different withdrawing rates are simulated; and by comparing the simulation results, it is found that the most suitable withdrawing rate is determined to be 5.0 mm·min^(-1). Finally, the accuracy and reliability of the radiation heat transfer model are verified, because of the accordance of simulation results with practical process.

关键词： directional solidification radiation heat transfer finite element method numerical simulation local matrix superalloy turbine blade

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UV-activated single-layer WSe_(2) for highly sensitive NO2 detection

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Rare Metals 2022年第5期41卷 1520-1528页

作者： Guo-Cai Lu Xiang-Hong liu Wei Zheng Jia-Yue Xie Zi-Shuo Li Cheng-ming Lou Guang-Lu Lei Jun Zhang College of Physics Center for Marine Observation and CommunicationsQingdao UniversityQingdao 266071China Key Laboratory of Advanced Energy Materials Chemistry(Ministry of Education) Nankai UniversityTianjin 300071China

Transition metal dichalcogenides(TMDs)materials have received significantly increasing attention in gas sensors because of their capability of working at room temperature(RT).However,the bottlenecks such as low respon... 详细信息

关键词： Transition limit layer

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High-Pressure Phase Transitions of Cubic Y_2O_3 under High Pressures by In-situ Synchrotron X-Ray Diffraction

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Chinese Physics Letters 2019年第4期36卷 66-70页

作者： Sheng Jiang Jing liu Xiao-Dong Li Yan-Chun Li Shang-ming He Ji-Chao Zhang Shanghai Institute of Applied Physics Chinese Academy of Sciences Shanghai Advanced Research Institute Chinese Academy of Sciences Institute of High Energy Physics Chinese Academy of Sciences

High-pressure phase transitions of cubic Y_2O_3 are investigated using in situ synchrotron x-ray diffraction in a diamond anvil cell up to 36.3 GPa. The pressure-induced phase transitions of cubic Y_2O_3, which display apparent inconsistencies in previous studies, are verified to be from a cubic phase to a monoclinic phase and further to a hexagonal phase at 11.7 and 21.6 GPa, respectively. The hexagonal Y_2O_3 displays noticeable anisotropic compressibility due to its layered structure and it is stable up to the highest pressure in the present study. A third-order Birch–Murnaghan fit based on the observed pressure-volume data yields zero pressure bulk moduli of180(3), 196(7) and 177(7) GPa for cubic, monoclinic and hexagonal phases, respectively.

关键词： High-pressure synchrotron previous

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