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AOPAN@PAN同轴纳米纤维的制备及吸附性能

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高等学校化学学报 2018年第4期39卷 825-831页

作者：任晶王书刚李延春杨清彪宋岩李耀先吉林大学化学学院长春130021 吉林化工学院材料科学与工程学院吉林132022

将盐酸羟胺与聚丙烯腈(PAN)反应得到偕胺肟化聚丙烯腈(AOPAN)溶液,随后采用同轴静电纺丝技术,制备了以AOPAN为壳,PAN为芯的同轴纳米纤维(AOPAN@PAN).通过透射电子显微镜(TEM)、扫描电子显微镜(SEM)和红外光谱(FTIR)等对纤维的形貌、组... 详细信息

将盐酸羟胺与聚丙烯腈(PAN)反应得到偕胺肟化聚丙烯腈(AOPAN)溶液,随后采用同轴静电纺丝技术,制备了以AOPAN为壳,PAN为芯的同轴纳米纤维(AOPAN@PAN).通过透射电子显微镜(TEM)、扫描电子显微镜(SEM)和红外光谱(FTIR)等对纤维的形貌、组成和力学性能进行了表征.结果表明,随着PAN用量的增加,AOPAN@PAN同轴纳米纤维的强度逐渐变大,当芯层与壳层质量比为1∶3时,纳米纤维的抗拉伸强度和断裂伸长率分别为3.677 MPa和18.03%;对Cu^(2.),Pb^(2.),CrO_4^(2.)和甲基橙(MO)的最大吸附量分别为135.1,151.2.12..48和43.45 mg/g;使水中Cu^(2.),Pb^(2.),CrO_4^(2.)和MO的浓度分别降低到0.17,0.03,0.06和0.91 mg/L.

关键词：同轴静电纺丝偕胺肟化聚丙烯腈金属离子吸附染料

miR-96在口腔鳞状细胞癌中的表达及作用的相关研究

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临床口腔医学杂志 2018年第5期34卷 267-270页

作者：许璐郭松新汶矿业集团公司中心医院肿瘤科山东泰安271233 新汶矿业集团公司中心医院口腔科山东泰安271233

目的:探讨miR-96在人口腔鳞癌(Oral squamous cell carcinoma,OSCC)组织标本和细胞系中的表达差异。方法:采用实时荧光定量PCR(qRT-PCR)检测人OSCC组织标本和细胞系中miR-96的表达情况,并分析miR-96的表达与患者临床病理特征的相关性。... 详细信息

目的:探讨miR-96在人口腔鳞癌(Oral squamous cell carcinoma,OSCC)组织标本和细胞系中的表达差异。方法:采用实时荧光定量PCR(qRT-PCR)检测人OSCC组织标本和细胞系中miR-96的表达情况,并分析miR-96的表达与患者临床病理特征的相关性。体外转染miR-96抑制剂至OSCC细胞Tca8113中,qRT-PCR检测转染后Tca8113细胞中miR-96的表达变化,CCK-8实验和流式细胞术检测转染后Tca8113细胞的增殖和凋亡情况。结果:qRT-PCR结果显示miR-96在人OSCC组织标本和Tca8113细胞中异常高表达(P<0.01),并且miR-96的表达与临床分期和淋巴结转移密切相关(P<0.01)。转染miR-96抑制剂后,Tca8113细胞中miR-96的表达水平明显降低(P<0.01),细胞增殖能力明显下降(P<0.01),细胞凋亡率明显上升(P<0.01)。结论:miR-96在OSCC组织标本和细胞系中异常高表达,下调miR-96的表达能够明显抑制OSCC细胞的增殖,促进其凋亡。

关键词：口腔鳞状细胞癌 miR-96 增殖凋亡

老年2.糖尿病合并心血管病的病变特点及危险因素分析

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海南医学 2017年第16期28卷 2599-2601页

作者：钟菊陈劲松佛山市第一人民医院同济康复医院内科广东佛山528000 佛山市第一人民医院内分泌科广东佛山528000

目的观察佛山地区老年糖尿病合并心血管病患者的临床特征,并分析其危险因素。方法选取2.14年2.至2.16年2.间佛山市第一人民医院同济康复医院及佛山市第一人民医院收治的老年2.糖尿病患者1 877例为研究对象,其中600例合并心血管病患... 详细信息

目的观察佛山地区老年糖尿病合并心血管病患者的临床特征,并分析其危险因素。方法选取2.14年2.至2.16年2.间佛山市第一人民医院同济康复医院及佛山市第一人民医院收治的老年2.糖尿病患者1 877例为研究对象,其中600例合并心血管病患者为观察组,1 2.7例未合并心血管病患者为对照组,比较两组患者的临床资料,并以Logistic多元回归分析方法分析老年2.糖尿病患者合并心血管病的危险因素。结果观察组和对照组患者的糖尿病(DM)病程[(10.3±3.1)年vs(8.9±2.5)年]、吸烟年限[(19.1±6.2.年vs(16.5±6.6)年],体质量指数(BMI)(2..1±1.3 vs 2..3±1.1)比较,观察组均明显长于或大于对照组,差异均有统计学意义(P2.vs 54.2.)和脑血管病(56.2.vs 50.4%)的比例比较,观察组均明显高于对照组,差异均有统计学意义(P2.h空腹血糖(2.h FBG)及糖化血红蛋白(Hb A1c)均明显高于对照组,高密度脂蛋白(HDL-C)、载脂蛋白A(Apo A)、水平明显低于对照组,差异均有显著统计学意义(P2.糖尿病合并心血管的独立危险因素(P2.糖尿病合并心血管病的发生率高,随着糖尿病病程的延长、Hb A1C控制不良、吸烟年限的延长,其发生心血管病的危险性增加。

关键词： 2.糖尿病心血管病缺血性 Logistic分析

The Persistence and Zonal Scale of Atmospheric Dipolar Modes

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Advances in Atmospheric Sciences 2024年第3期41卷 478-492页

作者： Jie song State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics(LASG) Institute of Atmospheric Physics(IAP)Chinese Academy of SciencesBeijing 100029China

This study investigates the relationship between the persistence and the zonal scale of atmospheric dipolar modes(DMs). Results from the daily data of ERA5 and the long-term output of an idealized atmospheric model show that the atmospheric DMs with a broader(narrower) zonal scale dipolar structure possess a longer(shorter) persistence. A detailed vorticity budget analysis indicates that the persistence of a hemispheric-scale DM(1/1 DM) and a regional or sectoral DM(1/8 DM) in the model both largely rely on the persistence of the nonlinear eddy forcing. Linear terms can indirectly reduce the persistence of the anomalous nonlinear eddy forcing in a 1/8 DM by modifying the baroclinicity via the arousal of anomalous vertical motions. Therefore, the atmospheric DMs with a broader(narrower) zonal scale possess a longer(shorter) persistence because the effects of the linear terms are less(more) pronounced when the atmospheric DMs have better(worse) zonal symmetry. Further analyses show that the positive eddy feedback effect is weak or even absent in a 1/8DM and the high-frequency eddy forcing acts more like a concomitant phenomenon rather than a leading driving factor for a 1/8 DM. Thus, the hemispheric-scale DM and the regional or sectoral DMs are different, not only in their persistence but also in their dynamics.

关键词： NAM NAO eddy feedback persistence linear term

Identification of Linear Systems Using Binary Sensors with Random Thresholds

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Journal of Systems Science & Complexity 2024年第3期37卷 907-923页

作者： HUANG Zhiyong song Qijiang School of Mathematics Renmin University of ChinaBeijing 100872China School of Mathematics Sino-French InstituteRenmin University of ChinaBeijing 100872China

In this paper,the problem of identifying autoregressive-moving-average systems under random threshold binary-valued output measurements is *** the help of stochastic approximation algorithms with expanding truncations,the authors give the recursive estimates for the parameters of both the linear system and the binary *** reasonable conditions,all constructed estimates are proved to be convergent to the true values with probability one,and the convergence rates are also established.A simulation example is provided to justify the theoretical results.

关键词： α-mixing binary sensor quantized system stochastic approximation stochastic thresh-old strongly consistent system identification

The learning curve for transurethral enucleation with bipolar energy for benign prostate hyperplasia:a single-surgeon experience of 494 patients

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Asian Journal of Andrology 2024年第3期26卷 288-294页

作者： Byeongdo song Sang Hun song Seong Jin Jeong Department of Urology Seoul National University Bundang HospitalSeongnam 13620Korea Department of Urology Seoul National University College of MedicineSeoul 03080Korea

This study was performed to investigate the learning curve of transurethral enucleation with bipolar energy(TUEB)for benignprostatic *** study involved 494 consecutive patients who underwent TUEB for benign prostatic hyperplasia fromAugust 2.18 to March 2.2. by one surgeon(SJJ,Seoul National University Bundang Hospital,Seongnam,Korea).The patientswere followed up at 1 week,1 month,3 months,and 6 months *** evaluate the learning curve of TUEB,perioperativeparameters including the enucleation ratio(enucleated tissue weight/transitional zone volume),TUEB efficiency(enucleatedtissue weight/operation time),and enucleation efficiency(enucleated tissue weight/enucleation time)were *** and postoperative complications were also assessed,including the International Prostate Symptom Score(IPSS),IPSSquality-of-life(QoL)score,and uroflowmetry *** patients’median age was 72.interquartile range[IQR]:66–78)years,and the estimated prostate volume and transitional zone volume were 63.0(IQR:46.0–90.6)ml and 37.1(IQR:2..0–60.0)ml,*** enucleation ratio,TUEB efficiency,and enucleation efficiency were 0.60(IQR:0.46–0.54)g ml−1,0.33(IQR:0.2.–0.46)g min−1,and 0.50(IQR:0.35–0.72.g min−1,respectively,plateauing after 70 *** functional outcomes,including total IPSS,IPSS QoL score,and uroflowmetry outcomes,significantly improved at 6 months after TUEB(all P2.)patients developed complications after TUEB,2..5%of whom experienced major complications(Clavien–Dindo grade≥3).The rate of major complications declined as the number ofTUEB cases increased(P=0.013).Our results suggest that the efficiency of TUEB stabilized within 70 procedures.

关键词： benign prostate hyperplasia learning curve perioperative efficiency prostate transurethral enucleation with bipolar energy

A Novel Three-stage Tectonic Model for Mississippi Valleytype Zn-Pb Deposits in Orogenic Fold-and-Thrust Belts

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Acta Geologica Sinica(English Edition) 2024年第4期98卷 843-849页

作者： song Yucai SinoProbe Laboratory Institute of GeologyChinese Academy of Geological SciencesBeijing 100037China

Mississippi Valley-type(MVT) Zn-Pb deposits predominantly form within both orogenic forelands and fold-andthrust belts, yet the mineralization process within the latter tectonic setting remains inadequately understood. This study, through a comprehensive review of MVT deposits across global fold-and-thrust belts, introduces a novel model elucidating the mineralization process in the context of tectonic belt evolution. It is demonstrated that during the stage Ⅰ, regional compression is introduced by early stages of plate convergence, causing the folding and thrusting and creating structural or lithological traps such as evaporite diapirs and unconformity-related carbonate dissolution-collapse structures. Thereafter, in stage Ⅱ, hydrocarbons begin to migrate and accumulate within these traps, where reduced sulfur is generated through thermochemical or bacterial sulfate reduction concurrent with or preceding Zn-Pb mineralization. In the subsequent stage Ⅲ, as plate convergence persists, the regional stress transitions from compression to transpression or extension. Under these conditions, steeply-dipping extensional faults are generated, facilitating the ascent of metalliferous brines into early-formed structural or lithological traps. Precipitation of Zn and Pb sulfides occurs through the mixing of Zn-Pb-transporting fluids with pre-existing reduced sulfur or by interaction with hydrocarbons.

关键词： Mississippi Valley-type Zn-Pb deposits fold-and-thrust belts tectonic model structural or lithological traps extensional faults

Preparation and characterization of high-reactivity explosive-based nano-boron microspheres

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Particuology 2024年第10期93卷 125-136页

作者： Chen Dong Yi Wang Kanghui Jia Dan song Xiaolan song Chongwei An School of Materials Science and Engineering North University of ChinaTaiyuan030051China Jinxi Group Shanxi Jiangyang Chemical Co. Ltd.Taiyuan030051China China Ordnance Institute of Science and Technology Beijing100089China School of Environment and Safety Engineering North University of ChinaTaiyuan030051China

Boron nanoparticles,with their remarkably high gravimetric and volumetric calorific values,emerge as the most promising fuel in energetic ***,challenges such as susceptibility to oxidation,high ignition temperature,and low combustion efficiency have constrained their further *** this study,we fabricated high explosives based nano-boron microspheres with uniform size using the electrostatic spray method,in which the boron nanoparticles and high explosives(CL-2. or PETN)are closely bonded together by fluorinated polymer(F2.02.and evenly *** results indicated that the microspheres exhibited high sphericity and showed an enhanced antioxidant *** addition of high-energy explosives not only reduced the thermal oxidation temperature of nano-boron powder within the microspheres but also significantly enhanced the pressurization ***,the microspheres with added high-energy explosives released more energy during the combustion *** to physically mixed samples,electrostatically sprayed microspheres with a uniform microstructure still exhibited higher ***,the design and synthesis of microspheres with controllable structures using the electrostatic spray method show promising application prospects.

关键词： Nano-boron CL-2. PETN Electrospraying Ignition and combustion

Self-healing Ga-based liquid metal/alloy anodes for rechargeable batteries

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Nano Research 2024年第3期17卷 1366-1383页

作者： Meijia song Zhonghua Zhang School of Energy and Power Jiangsu University of Science and TechnologyZhenjiang 212000China Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials(Ministry of Education) School of Materials Science and EngineeringShandong UniversityJingshi Road 17923Jinan 250061China

With the rapid development of electronics,electric vehicles,and grid energy storage stations,higher requirements have been put forward for advanced secondary *** metal/alloy electrodes have been considered as a promising development direction to achieve excellent electrochemical performance in metal-ion batteries,due to their specific advantages including the excellent electrode kinetics and self-healing ability against microstructural electrode *** conventional liquid batteries,high temperatures are needed to keep electrode liquid and ensure the high conductivity of molten salt electrolytes,which also brings the corrosion and safety ***-based metal/alloys,which can be operated at or near room temperature,are potential candidates to circumvent the above *** this review,the properties and advantages of Ga-based metal/alloys are ***,Ga-based liquid metal/alloys as anodes in various metal-ion batteries are reviewed in terms of their self-healing ability,battery configurations,working mechanisms,and so ***,some views on the future development of Ga-based electrodes in batteries are provided.

关键词： metal-ion batteries Ga-based liquid metal/alloy anodes self-healing capability room temperature