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Remarkable enhancement of gas selectivity on organosilica hybrid membranes using urea-modulated metal-organic framework nanoparticles

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Frontiers of Chemical Science and engineering 2024年第2期18卷 83-92页

作者： Yayun Zhao Dechuan Zhao Chunlong Kong Yichao lin Xuezhen Wang Liang Chen Key Laboratory of Advanced Fuel Cells and electrolyzers Technology of Zhejiang Province Ningbo Institute of Materials Technology and EngineeringChinese Academy of SciencesNingbo 315201China University of Chinese Academy of Sciences Beijing 100049China Collaboration Innovation Center for Tissue Repair Material engineering Technology China West Normal UniversityNanchong 637009China

Metal-organic framework/organosilica hybrid membranes on tubular ceramic substrates have shown great potential for the implementation of membrane technology in practical gas separation projects due to their higher permeance compared to commercial ***,the selectivities of the reported membranes are ***,we have incorporated urea-modulated metal-organic frameworks into organosilica membranes to greatly enhance its separation *** urea-modulated metal-organic frameworks exhibit less-defined edges of crystallographic facets and high defect *** can be well-dispersed in the organosilica layer,which substantially suppresses the interfacial defects between metal-organic frameworks and organosilica,which is beneficial for improving the selectivity of membranes for gas *** results have shown that the enhanced ideal selectivity of H_(2)/CH_(4) was 165 and that of CO_(2)/CH_(4) was 43,with H_(2) permeance of about 1.25×10^(−6) mol·m^(−2)·s^(−1)·Pa^(−1) and CO_(2) permeance of 3.27×10^(−7) mol·m^(−2)·s^(−1)·Pa^(−1) at 0.2 MPa and 25℃.In conclusion,the high level of hybrid membranes can be used to separate H_(2)(or CO_(2))from the binary gas mixture H_(2)/CH_(4)(or CO_(2)/CH_(4)),which is important for gas separation in practical ***,the simple and feasible modulation of metal-organic framework is a promising strategy to tune different metal-organic frameworks for membranes according to the actual demands.

关键词： ZIF-8 nanocrystals urea organosilica hybrid membrane enhanced separation performance

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高校实验中心高效运行机制探究

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实验室研究与探索 2024年第4期43卷 94-98页

作者：林玲冯鹏举暨南大学化学与材料学院广州510630

实验中心是高校师生开展教学实验与科研工作的重要平台。化学与材料学院实验中心将原化学系实验教学中心与材料系实验教学中心融合,整合教学资源与分析测试仪器,由实验中心统筹管理。实验中心承担实验室建设、实验准备、实验室管理、大... 详细信息

实验中心是高校师生开展教学实验与科研工作的重要平台。化学与材料学院实验中心将原化学系实验教学中心与材料系实验教学中心融合,整合教学资源与分析测试仪器,由实验中心统筹管理。实验中心承担实验室建设、实验准备、实验室管理、大型精密仪器培训与维护等工作,繁杂的工作任务使实验系列教师超负荷运作,工作效率偏低。从教学、仪器管理、实验室开放与安全3个维度探讨并制定相应管理制度,提升了实验中心运行效率,高效高质量服务教学科研,相关运行机制和实践经验可供其他科研院所参考。

关键词：实验中心团队管理实验室管理仪器管理

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Interstitial carbon induces enriched Cu^(δ+) sites in Cu_(2)O nanoparticles to facilitate CO_(2) electroreduction to C_(2+) products

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Nano Research 2024年第8期17卷 7013-7019页

作者： Haoran Wang Rongbo Sun Peigen Liu Haohui Hu Chen ling Xiao Han Yi Shi Xusheng Zheng Geng Wu Xun Hong Center of Advanced Nanocatalysis(CAN) Department of Applied ChemistryHefei National Laboratory for Physical Sciences at the MicroscaleUniversity of Science and Technology of ChinaHefei 230026China Sinochem Holdings Co Ltd Xiongan New AreaHebei 071700China National Synchrotron Radiation Laboratory(NSRL) University of Science and Technology of ChinaHefei 230029China

The electrochemical CO_(2) reduction reaction(CO_(2)RR)holds significant promise in advancing carbon *** catalysts for the electrochemical CO_(2)RR to multi-carbon(C_(2+))products(e.g.,C_(2)H_(4))under industrial-level current density is urgently needed and ***,we report the Cu_(2)O nanoparticles doped with interstitial carbon atoms(denoted as C-Cu_(2)O NPs)for the conversion of CO_(2) to C_(2+)*** interstitial carbon promotes the C-Cu_(2)O NPs to possess abundant unsaturated Cu–O bonds,leading to a high-density Cu^(δ+)(0ed C-Cu_(2)O NPs exhibited significant Faradic efficiency(Fe)of C_(2+) products approaching 76.9%and a partial current density reaching 615.2 mA·cm^(–2)under an industrial-level current density of 800 mA·cm^(–2).Furthermore,the efficient electrosynthesis of C_(2)H_(4) achieved an Fe of 57.4%with a partial current density of 459.2 mA·cm^(–2).In situ electrochemical attenuated total reflection Fourier transform infrared spectroscopy and in situ Raman spectroscopy analyses revealed that C-Cu_(2)O NPs stabilized the intermediate*CO and facilitated C–C coupling,leading to increased selectivity towards C_(2+) products.

关键词： CO_(2) electroreduction C-C coupling interstitial carbon *CO coverage industrial-level current density

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Correlation analysis of human papillomavirus e6/e7 mRNA detection with diagnosis,prognosis and recurrence risk in patients with cervical epithelioma

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World journal of Clinical Cases 2024年第20期12卷 4146-4153页

作者： ling-Li Zhang Ming-Yan Du Xin Du j.e Duan Dong-Mei Yao jing jing Chun Feng lin Song Department of Gynaecology Maternal and Child Health Hospital of Hubei ProvinceWuhan 430075Hubei ProvinceChina Department of Gynaecology China Resources WISCO General HospitalWuhan 430080Hubei ProvinceChina Department of Surgery Maternal and Child Health Hospital of Hubei ProvinceWuhan 430075Hubei ProvinceChina

BACKGROUND Cervical intraepithelial neoplasia(CIN)is an important precursor of cervical *** detection and treatment can reduce the incidence of cervical *** To investigate the detection rate of human papillomavirus(HPV)e6/e7 mRNA in cervical tissue of patients with different types of epithelial cell neoplasia(CIN)and its relationship with CIN progression and *** One hundred women with HPV infection detected by cervical exfoliation cytology between january 2022 and january 2023 were retrospectively *** patients were graded CIN based on colposcopy and cervical *** positive expression rates of HPV e6/e7 mRNA and HPV[polymerase chain reaction(PCR)-reverse dot crossing]were compared among all *** with HPV e6/e7 mRNA expression in the grade 1 CIN group were followed up for 1 *** relationship between atypical squamous epithelium and high malignant epithelial neoplasia was investigated by univariate and multivariate *** The diagnostic sensitivity,specificity,and sensitivity of PCR-reverse point hybrid ization technology for secondary CIN were 70.41%,70.66%,and 0.714,*** and specificity for secondary CIN were 752%and 7853%,respectively,the area under the curve value was *** Multifactorial model analysis revealed that the HPV positive rates and the HPV e6/e7 mRNA positive rates were independent risk factors of CIN grade I(Pe I patients with positive for HPV e6/e7 mRNA,in its orientation to grade CIN patients,in its orientation to grade CIN patients,at 69.2%,compared with patients negative for HPV e6/e7 mRNA(30.8%),significant difference(Pe6/e7 mRNA and HPV(PCR-reverse dot hybrid)positive expression have a close relationship with CINgrade disease progression and is an independent risk factor for high-grade CIN lesions.

关键词： Cervical epithelial neoplasia Human papilloma change with virus e6/e7 mRNA Cervical cancer Correlation analysis

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In situ visualization of the cellular uptake and sub-cellular distribution of mussel oligosaccharides

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journal of Pharmaceutical Analysis 2024年第6期14卷 840-850页

作者： Zhenj.e Yu Huarong Shao Xintian Shao linyan Yu Yanan Gao Youxiao Ren Fei Liu Caicai Meng Peixue ling Qixin Chen Key Laboratory for Biotechnology Drugs of National Health Commission School of Pharmaceutical Sciences&Institute of Materia MedicaMedical Science and Technology Innovation CenterShandong First Medical University&Shandong Academy of Medical SciencesJinan250117China Key Laboratory of Biopharmaceuticals Engineering Laboratory of Polysaccharide DrugsNational-Local Joint Engineering Laboratory of Polysaccharide DrugsShandong Academy of Pharmaceutical ScienceJinan250101China Shenzhen Research Institute of Xiamen University ShenzhenGuangdong518057China School of Life Sciences Medical Science and Technology Innovation CenterShandong First Medical University&Shandong Academy of Medical SciencesJinan250117China Departments of Diagnostic Radiology SurgeryChemical and Biomolecular Engineeringand Biomedical EngineeringYong Loo Lin School of Medicine and Faculty of EngineeringNational University of SingaporeSingapore119074Singapore School of Pharmaceutical Sciences Shandong UniversityJinan250101China

Unlike chemosynthetic drugs designed for specific molecular and disease targets,active small-molecule natural products typically have a wide range of bioactivities and multiple targets,necessitating extensive screening and *** address this issue,we propose a strategy for the direct in situ microdynamic examination of potential drug candidates to rapidly identify their effects and mechanisms of *** a proof-of-concept,we investigated the behavior of mussel oligosaccharide(MOS-1)by tracking the subcellular dynamics of fluorescently labeled MOS-1 in cultured *** recorded the entire dynamic process of the localization of fluorescein isothiocyanate(FITC)-MOS-1 to the lysosomes and visualized the distribution of the drug within the ***,lysosomes containing FITC-MOS-1 actively recruited lipid droplets,leading to fusion events and increased cellular lipid *** drug behaviors confirmed MOS-1 is a candidate for the treatment of lipid-related ***,in a high-fat HepG2 cell model and in high-fat diet-fed apolipoprotein e(Apoe)^(-/-)mice,MOS-1 significantly promoted triglyceride degradation,reduced lipid droplet accumulation,lowered serum triglyceride levels,and mitigated liver damage and ***,our work supports the prioritization of in situ visual monitoring of drug location and distribution in subcellular compartments during the drug development phase,as this methodology contributes to the rapid identification of drug ***,this methodology is significant for the screening and development of selective small-molecule drugs,and is expected to expedite the identification of candidate molecules with medicinal effects.

关键词： Cellular imaging Fluorescence labeling Mussel oligosaccharide Lipid metabolism

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全回转吊舱推进器动态转舵力矩数值预报研究

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中国造船 2024年第1期65卷 123-132页

作者：舒永东凌宏杰林勇刚吉青山浙江大学流体动力与机电系统国家重点实验室杭州310027 南京高精船用设备有限公司南京211103 江苏科技大学海洋装备研究院镇江212003

吊舱推进器兼备推进和操纵功能,可在水平面上实现360°全回转。论文基于黏流理论,采用双重滑移网格技术,在指定的吊舱推进器回转与螺旋旋转运动模式下,构建动态转舵力矩数值预报方法。研究表明:与来流速度相比,转舵速度对转舵力矩的影... 详细信息

吊舱推进器兼备推进和操纵功能,可在水平面上实现360°全回转。论文基于黏流理论,采用双重滑移网格技术,在指定的吊舱推进器回转与螺旋旋转运动模式下,构建动态转舵力矩数值预报方法。研究表明:与来流速度相比,转舵速度对转舵力矩的影响很小,当j=0.5时,转舵力矩在260°附近出现最大值,力矩系数为2.384×10^(-3);转舵力矩存在2个响应频率,分别为轴频4.17 Hz和叶频20.8 Hz。研究成果对吊舱推进器转舵系统的设计具有指导意义。

关键词：吊舱推进器全回转水动力数值预报动态转动力矩

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Tuning interface mechanism of FeCo alloy embedded N,S-codoped carbon substrate for rechargeable Zn-air battery

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journal of energy Chemistry 2024年第6期93卷 400-410,I0010页

作者： Hui Chang Lulu Zhao Shan Zhao Zong-lin Liu Peng-Fei Wang Ying Xie Ting-Feng Yi School of Materials Science and engineering Northeastern UniversityShenyang 110819LiaoningChina Key Laboratory of Functional Inorganic Material Chemistry Ministry of EducationSchool of Chemistry and Materials ScienceHeilongjiang UniversityHarbin 150080HeilongjiangChina Key Laboratory of Dielectric and electrolyte Functional Material Hebei Province School of Resources and MaterialsNortheastern University at QinhuangdaoQinhuangdao 066004HebeiChina

The interface mechanism between catalyst and carbon substrate has been the focus of *** this paper,the FeCo alloy embedded N,S co-doped carbon substrate bifunctional catalyst(FeCo/S-NC)is obtained by a simple one-step pyrolysis *** experimental results and density functional theory(DFT)calculation show that the formation of FeCo alloy is conducive to promoting electron transfer,and the introduction of S atom can enhance the interaction between FeCo alloy and carbon substrate,thus inhibiting the migration and agglomeration of particles on the surface of carbon *** FeCo/SNC catalysts show outstanding performance for oxygen reduction reaction(ORR)and oxygen evolution reaction(OeR).FeCo/S-NC shows a high half-wave potential(e_(1/2)=0.8823 V)for ORR and a low overpotential at 10 mA cm^(-2)(e_(j=10)=299 mV)for *** addition,compared with Pt/C+RuO_(2) assembled Zn-air battery(ZAB),the FeCo/S-NC assembled ZAB exhibits a larger power density(198.8 mW cm^(-2)),a higher specific capacity(786.1 mA h g_(zn)~(-1)),and ultra-stable cycle *** results confirm that the optimized composition and the interfacial interaction between catalyst and carbon substrate synergistically enhance the electrochemical performance.

关键词： FeCo alloy N S co-doped carbon DFT calculation Zn-air batteries Interfacial interaction

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Coupling metal-organic frameworks and wood-based carbon for water remediation

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Nano Research 2024年第6期17卷 5661-5669页

作者： Akhter Zia Manish Neupane Aidan McGlone Rui He Ruikun Xin Yifeng Liu Qiangu Yan jinwu Wang ling Li Zhiyong Cai Pei Dong Yingchao Yang Department of Mechanical engineering University of MaineOronoME 04469USA Department of Mechanical and Aerospace engineering University of MissouriColumbiaMO 65211USA Department of Mechanical engineering George Mason UniversityFairfaxVA 22030USA Department of Civil and environmental engineering Rice UniversityHoustonTX 77005USA Department of Materials Science and Nanoengineering Rice UniversityHoustonTX 77005USA Forest Products Laboratory USDAMadisonWI 53726USA School of Forestry Resources University of MaineOronoME 04469USA

Fresh and clean water is highly demanded throughout the *** effectively address the need,nanomaterials enabled nanotechnology has been explored as a means of more efficient,reliable,and environmentally friendly approach towards water treatment *** concern in adopting nanomaterials is how to retrieve them from water body to avoid secondary *** this work,the earth abundant and sustainable wood,e.g.,basswood,was selected and carbonized into porous carbon as host skeleton,and metal-organic frameworks(MOFs),e.g.,MOF-199 with extremely high surface area,were grown throughout all channels in the porous basswood *** the traditional organic pollutant,methyl orange(MO),the combination of MOFs and basswood carbon(MOFs@carbon)demonstrates a remarkable adsorption capacity,which is 243%and 454%higher than basswood carbon and MOF-199,*** an outstanding adsorption performance originates from that the positively charged carbon pulls MO molecules close to carbon surface,leading to a high MO molecule concentration,and then the concentration gradient drives the MO molecules to be stored inside MOFs,functioning like *** findings highlight the potential application of coupled MOFs and biomass carbon in addressing water remediation.

关键词： metal-organic framework(MOF)-199 basswood carbon MOFs@carbon methyl orange

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生长激素对感染j亚群禽白血病病毒的鸡胚成纤维细胞系的影响

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基因组学与应用生物学 2024年第4期43卷 663-674页

作者：林玲莫国东吴强张细权华南农业大学动物科学学院广州510642 广西农业职业技术大学动物科技学院南宁530009

生长激素(growth hormone,GH)不仅能调节动物的代谢、生长、发育和生殖,也能调节动物的免疫系统。本研究旨在通过转录组测序及生物信息学技术分析GH影响j亚群禽白血病病毒(subgroup j avian leukosis viruses,ALV-j)感染的鸡胚成纤维细... 详细信息

生长激素(growth hormone,GH)不仅能调节动物的代谢、生长、发育和生殖,也能调节动物的免疫系统。本研究旨在通过转录组测序及生物信息学技术分析GH影响j亚群禽白血病病毒(subgroup j avian leukosis viruses,ALV-j)感染的鸡胚成纤维细胞系(chicken fibroblast cells,DF-1)中的关键基因和信号通路。将空载和GH的过表达质粒分别转染至DF-1,接着均接种ALV-j毒株SCAU-HN06,采用转录组测序技术检测相关的基因表达谱变化。结果显示,与对照组相比,实验组中有上调差异表达基因(differentially expressed genes,DeGs)122个(49%),下调DeGs 127个(51%)。通过GO功能富集分析发现,DeGs主要富集于新陈代谢过程、生物调节、细胞过程、细胞部分、催化活性和结合等过程。经KeGG富集分析发现DeGs主要在免疫系统、信号转导、信号分子和相互作用、细胞生长和死亡等通路上富集。进一步构建蛋白质-蛋白质相互作用(protein-protein interaction,PPI)网络,筛选出7个免疫相关基因进行实时定量PCR(RT-qPCR)验证,其中TRAF1、DSTYK、HeSX1基因的表达趋势与转录组测序技术(RNA sequencing,RNA-seq)的测序结果相一致。本研究通过生物信息学分析挖掘出可能参与调控ALV-j的关键基因和信号通路,以期为禽白血病病毒-宿主相互作用的关系提供新的见解,为禽白血病的净化提供新的思路。

关键词：差异表达基因(DeGs) 生长激素(GH) j亚群禽白血病病毒(ALV-j) 转录组测序

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Polarization Study of Swift j151857.0–572147 with IXPe Observation

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Research in Astronomy and Astrophysics 2024年第9期24卷 62-67页

作者： Yu-Shan ling Fei Xie Ming-Yu Ge Fabio La Monaca Guangxi Key Laboratory for Relativistic Astrophysics School of Physical Science and Technology Guangxi University Key Laboratory of Particle Astrophysics Institute of High Energy Physics Chinese Academy of Sciences INAF Istituto di Astrofisica e Planetologia Spaziali Dipartimento di Fisica Università degli Studi di Roma “Tor Vergata” Dipartimento di Fisica Università degli Studi di Roma “La Sapienza”

We present an analysis of the Imaging X-ray Polarimetry explorer observation from a newly discovered transient source: Swift j151857.0–572147. The obtained polarization degree(PD) and angle are 0.3% ± 0.3% and-24° ± 26° respectively in 2–8 keV within 68% confidence level errors, and polarization results are below MDP99in all energy bins, with the upper limit on PD of 0.8% in the 2–8 keV energy range. No quasi-periodic oscillations(QPOs) are detected in this observation. The polarization and QPO analyses support the hypothesis that the source was in the high soft state, and the results are consistent with predictions for a thin accretion disk model.

关键词： polarization stars: black holes X-rays: bursts

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