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Bimetallic MOF derived nickel nanoclusters supported by nitrogendoped carbon for efficient electrocatalytic CO_(2)reduction

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Nano Research 2023年第4期16卷 4546-4553页

作者： Haojing Wang Xiaodong Wu Guanyu Liu Shuyang Wu rong xu School of Chemical and Biomedical Engineering Nanyang Technological UniversitySingapore 637459Singapore College of Materials Science and Engineering Nanjing Tech UniversityNanjing 210009China Cambridge Centre for Advanced Research and Education in Singapore(CARES) Singapore 138602Singapore

Utilizing electrocatalytic CO_(2)reduction(ECR)to decrease the carbon footprint has been regarded as a promising ***,we report the synthesis of Ni nanoclusters(NCs)of below 2 nm highly dispersed on N-doped carbon using a Ni/Zn bimetallic metal-organic framework(MOF)*** size and the content of the Ni catalyst can be effectively controlled by varying the Ni:Zn ratio in MOF ***-NH2 group in MOF ligand critically influences the size of Ni catalyst,as well as the property of the carbon *** the optimum ratio of 1:150,Ni NCs with an average size of 1.9 nm anchored on pyridinic N-rich carbon were obtained after MOF *** resultant catalyst exhibits a high Faradaic efficiency for CO(FECO,98.7%)and considerable partial current density for CO(JCO,−40.4 mA·cm^(−2))at−0.88 V versus reversible hydrogen electrode(RHE).Benefiting from the synergistic effect of small Ni clusters and their optimal interaction with the carbon support,the catalyst displays exceptional long-term *** functional theory(DFT)calculations carried out for the three model structures confirm that Ni NCs anchored on N-doped carbon facilitate the easier formation of*COOH intermediate and faster electron transfer rate compared with the large-sized Ni particles represented by Ni(111)and the N-doped carbon without Ni.

关键词： electrochemical CO_(2)reduction metal-organic framework N-doped carbon nanocluster

Treatment of a giant low-grade appendiceal mucinous neoplasm:A case report

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World Journal of Clinical Cases 2021年第35期9卷 11056-11060页

作者： rong xu Zhi-Long Yang Department of Gynecology and Obstetrics Nanjing Lishui People’s HospitalNanjing 211200Jiangsu ProvinceChina Department of General Surgery Nanjing Lishui People’s HospitalNanjing 211200Jiangsu ProvinceChina

BACKGROUND Low-grade appendiceal mucinous neoplasm(LAMN)is extremely rare and easily misdiagnosed before *** SUMMARY We report the treatment of an asymptomatic case of LAMN diagnosed by magnetic resonance imaging(MRI)and surgical findings.A 70-year-old woman presented with an adnexal mass found by physical examination in July *** ultrasonography revealed a cystic mass in the right adnexa,and computed tomography showed a cystic mass in the pelvic *** tumor markers were normal.A further MRI examination suggested mucinous neoplasm in the right pelvic cavity,excluding the possibility of adnexal *** exploration found a huge cystic mass of about 10 cm×7 cm that originated from the apex of the appendix,with spontaneous *** was confirmed by pathological *** of May 2021,no disease recurrence occurred after an open *** This case indicates that we should pay more attention to female patients who are clinically diagnosed with an adnexal mass at admission,.The physical examination should be done carefully,and the laboratory and imaging examination results should be comprehensively analyzed to avoid misdiagnosis and to ensure prompt diagnosis and treatment,and to improve *** may be a better option for the diagnosis of appendiceal mucinous neoplasm.

关键词： Appendiceal mucinous neoplasm Diagnosis Cystic mass Pelvic cavity Appendectomy Case report

Electroacupuncture effects on cortical neurons, as well as Janus kinase 2-signal transducer and activator of transcription 3 signal transduction pathway, in a rat model of cerebral ischemia

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Neural Regeneration Research 2012年第6期7卷 457-462页

作者： rong Liu Nenggui xu Wei Yi Kangbai Huang Guangzhou University of Chinese Medicine Guangzhou 510405 Guangdong Province China

The present study established a model of focal cerebral ischemia through heat-coagulation induced occlusion of the middle cerebral artery. Following electroacupuncture at Baihui （GV20） and Dazhui （GV14）, or intracerebroventricular infusion of AG490, a Janus kinase 2 phosphorylation inhibitor, the amount of necrotic or degenerated neurons in the ischemic cerebral cortex decreased, neuronal swelling was ameliorated, and expression of phosphorylated Janus kinase 2 and signal transducer and activator of transcription 3 decreased Results confirmed that electroacupuncture promoted neuronal repair in the cerebral cortex by reducing expression of phosphorylated Janus kinase 2 and signal transducer and activator of transcription 3, as well as weakening the phosphorylated activation, thereby blocking abnormal activation of the Janus kinase 2- signal transducer and activator of transcription 3 signal transduction pathway.

关键词： cerebral ischemia JAK2-STAT3 neurons electroacupuncture AG490

Mass of a short-range correlated nucleon

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Chinese Physics C 2021年第2期45卷 1-5页

作者： rong Wang xu-rong Chen Tao-Feng Wang Institute of Modern Physics Chinese Academy of SciencesLanzhou 730000China School of Nuclear Science and Technology University of Chinese Academy of SciencesBeijing 100049China Guangdong Provincial Key Laboratory of Nuclear Science Institute of Quantum MatterSouth China Normal UniversityGuangzhou 510006China School of Physics Beihang UniversityBeijing 100191China

Nucleon properties and structure should be modified by short-range correlations(SRC)among *** analyzing SRC ratio data,we extract the mass of a nucleon in an SRC pair and the expected number of pn-SRC pairs in deuterium,under the assumption that the SRC nucleon mass is universal for different *** nucleon mass of a two-nucleon SRC pair is m_(SRC)=852±18 MeV,and the number of pn-SRC pairs in deuterium is n^(d)_(SRC)=0.021±*** mass deficit of the strongly overlapping nucleon can be explained by the trace anomaly contribution to the mass in QCD or alternatively by the vacuum energy in the MIT bag model.

关键词： nucleon mass nucleon-nucleon short-range correlation quasielastic scattering

Fin performance of 3-D aerator devices with backward lateral deflectors

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Journal of Hydrodynamics 2020年第2期32卷 410-413页

作者： Jian-rong xu Jian-hua Wu Yu Peng Fei Ma Powerchina Huadong Engineering Corporation Limited Hangzhou311122China College of Water Conservancy and Hydropower Engineering Hohai UniversityNanjing210098China

In the present work,a 3-D aerator device with backward lateral deflectors,called BLD-3-D aerator device,is developed,and the lateral cavity and fin performance of the BLD-3-D aerator device are experimentally *** findings show that,the relative lateral cavity length with backward lateral deflectors is shorter than that with current lateral deflectors under the same approach flow conditions,and on the basis of the results of the relative cavity length ratio between the lateral and bottom aerators the BLD-3-D aerator device is of remarkable performance for the water fin control thanks to the decrease of the relative lateral cavity length.

关键词： Aerator backward lateral deflector BLD-3-D aerator device cavity water fin

Possible PKHD1 Hot-spot Mutations Related to Early Kidney Function Failure or Hepatofibrosis in Chinese Children with ARPKD:A Retrospective Single Center Cohort Study and Literature Review

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Current Medical Science 2020年第5期40卷 835-844页

作者： Li-ru QIU rong-rong xu Jin-hui TANG Jian-hua ZHOU Department of Pediatrics Tongji HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430030China

PKHD1 mutations are generally considered to cause autosomal recessive polycystic kidney disease(ARPKD).ARPKD is a rare disorder and one o f the most severe conditions leading to end-stage renal disease in *** the biallelic deletion mutation,patients have difficulty in surviving the perinatal period,resulting in perinatal or neonatal *** study retrospectively analyzed patient characteristics,imaging characteristics,laboratory examinations and family surveys from 7 Chinese children with different PKHD1 gene mutations diagnosed by high-throughput sequencing from January 2014 to February 2018.O f the 7 children,there were 3 males and 4 *** missense mutations,two frameshift mutations,two deletion mutations,and two intronic slicing mutations were *** of the mutations have not previously been *** the literature search,we identified a total of 29 Chinese children with PKHD1 *** missense mutation c.2507T>C in exon 24 was found in one patient in our study,and five patients with liver fibrosis but normal renal function were reported in the *** missense mutation c.5935G>A in exon 37 was found in two patients in our study and three cases in the *** patients had renal failure at an age as young as 1 year of those five patients with the missense mutation c.5935G>A in exon *** was concluded that:(1)Kidney length more than 2-3 SDs above the mean and early-onset hypertension might be associated with PKHDI-associated ARPICD;(2)The more enlarged the kidney size is,the lower the renal function is likely to be;(3)c.5935G>A may be a hot spot that leads to early renal failure in Chinese children with PKHD1 mutations;(4)c.2507T>C may be a hot-spot mutation associated with hepatic lesions in Chinese children with PKHD1.

关键词： PKHD1 mutations autosomal recessive polycystic kidney disease clinical phenotype genotypic characteristics Chinese children

Clinical application of hepatic CT perfusion

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World Journal of Gastroenterology 2009年第8期15卷 907-911页

作者： Liang Zhong Wen-Jing Wang Jian-rong xu Department of Radiology Affiliated Renji Hospital Shanghai Jiaotong University School of Medicine Shanghai 200001 China

Complicated changes occur in hemodynamics of hepatic artery and vein, and portal vein under various kinds of pathologic status hepatic blood supply. This because of distinct double article reviews the clinical applica... 详细信息

关键词： X-ray computed tomography Perfusion Liver Hemodynamics

IMPACT PROPERTIES OF METALLOCENE - CATALYZED ETHYLENE-α-OLEFIN COPOLYMERS

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Chinese Journal of Polymer Science 2002年第5期20卷 473-480页

作者： xu-rong xu Jun-ting xu Lin-xian Feng Department of Polymer Science and Engineering Zhejiang University Hangzhou 310027,China Department of Polymer Science and Engineering College of Chemistry & Molecular Engineering Peking University Beijing 100871, China Department of Polymer Science and Engineering Zhejiang University Hangzhou 310027

The impact properties of two selected metallocene-catalyzed ethylene-butene copolymers and one conventionalcopolymer were evaluated using Izod impact test. It is found that the metallocene-catalyzed copolymer shows superior impactproperties. This result was explained on the basis of the more homogeneous inter-molecular composition distribution andnarrower molecular weight distribution, which leads to more homogeneous morphology with fewer defects. Stepwisecrystallization improves the impact properties, especially in the crack propagation process, to a large extent. This is due to thedecrease of entanglements by stepwise crystallization, which is advantageous for the chain slip and shear. The polymer withheterogeneous intra-molecular composition distribution exhibits a more evident improvement of impact properties understepwise crystallization.

关键词： Metallocene-catalyzed ethylene-butene copolymer Impact properties Molecular heterogeneities Thermal treatment

The impact of radicals in cold atmospheric plasma on the structural modification of gap junction:a reactive molecular dynamics study

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International Journal of Smart and Nano Materials 2019年第2期10卷 144-155页

作者： rong-Guang xu Zhitong Chen Michael Keidar Yongsheng Leng Department of Mechanical and Aerospace Engineering The George Washington UniversityWashingtonDCUSA

Cold atmospheric plasmas are currently gaining increasing attention for cancer ***,very limited studies regarding the interaction mechanisms between plasma species and tissues are *** report the interaction of plasma produced species(^(*)OH and HO_(2)^(*))with gap junction by employing reactive molecular dynamics *** results indicate ^(*)OH and HO_(2)^(*) radicals can chemically react with N-terminal of gap junction resulting in its structural *** are two breaking mechanisms being identified:C-N peptide bonds and C-C bonds can be damaged by ^(*)OH and HO_(2)^(*) radicals,*** findings could be particularly important for understanding the plasma-generated reactive species triggering bystander effect based on gap junction intercellular communication.

关键词： Cold atmospheric plasma reactive species molecular dynamics bystander effect gap junction