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One-step preparation of carbon nanotubes with nickel as the core

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Science China(Technological Sciences) 2011年第1期54卷 76-80页

作者： RUAN Zheng LIU xiansong HU Feng ZHU DeRu CHENG ChunHao QIU ShiXing ZHOU Dan GAO HuaMin JIA DaoNing WANG PengPeng Engineering Technology Research Center of Magnetic Materials School of Physics & Materials Science Anhui University Hefei 230039 China Chemistry and Material Science Department Chaohu College Chaohu 238000 China

CNTs with core-shell structure were successfully synthesized by a microwave-assisted polyol method,and magnetic Ni nanoparticles were employed as a catalyst. The preparation method is fast and simple. The structures,morphology and magnetic properties of the as-synthesized samples were investigated using Raman spectrometer,X-ray diffraction (XRD),transmission electron microscopy (TEM),vibrating sample magnetometer (VSM),respectively. The XRD results suggested that Ni particles used as a catalyst in our experiment were nano-sized. In this paper,magnetic Ni nanoparticles were employed as a catalyst,and an electric spark on metal Ni nanoparticles with the microwave eddy current effect could induce CNTs’ formation with the further reaction. The length of hollow carbon nanotubes was micro-sized and the diameters of most of the CNTs were varying from 18 to 20 nm according to the TEM images. Magnetic measurements demonstrated that CNTs with core-shell structure indicated a characteristic ferromagnetic behavior compared with Ni nanoparticles.

关键词： microwave.assisted Ni catalyst carbon nanotube core-shell structure

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海上平台贫乙二醇注入泵流量调节方法研究

化工管理 2024年第16期 136-139页

作者：李瑞建孙英红祝亚恒吴显松孙赞杨宁中海石油(中国)有限公司海南分公司海南海口570312

某海上平台海底管道随着水下生产平稳运行,注入至井口的贫乙二醇需求量逐渐减少,对此要根据实际情况对贫乙二醇注入泵流量进行调节。文章从旁路调节、改变泵的转速、改变柱塞的行程与直径、顶开吸入阀调节等四个方面开展研究,并从改造... 详细信息

某海上平台海底管道随着水下生产平稳运行,注入至井口的贫乙二醇需求量逐渐减少,对此要根据实际情况对贫乙二醇注入泵流量进行调节。文章从旁路调节、改变泵的转速、改变柱塞的行程与直径、顶开吸入阀调节等四个方面开展研究,并从改造的可行性和经济性方面进行充分的分析。经过比较分析,对贫乙二醇泵流量调节方式改造,选择改小柱塞直径是最为经济可靠的方式。

关键词：乙二醇柱塞泵流量调节变频器齿轮箱

基于SP+模型的三元锂离子电池基本反应模型参数修正研究

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黑龙江科学 2024年第4期15卷 94-98页

作者：徐伟周显松许铀周开晴姚锦祥郑振兴广东技术师范大学广州510665

通过改进单粒子模型(SP+模型)对电池基本参数进行预测及限制负极电位来获得充电安全边界是快充策略应用的有效评估方法。SP+模型需建立在三电极电池的基础上,在各种特性上与真实电池有一定的区别,这导致利用负极电位评估方法在预测精度... 详细信息

通过改进单粒子模型(SP+模型)对电池基本参数进行预测及限制负极电位来获得充电安全边界是快充策略应用的有效评估方法。SP+模型需建立在三电极电池的基础上,在各种特性上与真实电池有一定的区别,这导致利用负极电位评估方法在预测精度上存在一定的差异。针对上述问题建立电池基本反应模型,将修正因子导入到涉及SOC、正负极电位、正负极嵌锂浓度的电池平衡电动势表达式中,设置相应的测试计划对修正因子进行标定,实现在25℃和特定SOC情况下对三元锂离子电池平衡电动势及正负极电势预测精度的提升,为后续安全边界评估开路正负极电位预测值提供参考。

关键词：三元锂离子动力电池改进单粒子模型(SP+模型) 电池基本反应模型

Configurable circular-polarization-dependent optoelectronic silent state for ultrahigh light ellipticity discrimination

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光:科学与应用(英文版) 2023年第8期12卷 1651-1660页

作者： Yonghao Bu xiansong Ren Jing Zhou Zhenhan Zhang Jie Deng Hangyu Xu Runzhang Xie Tianxin Li Weida Hu Xia Guo Wei Lu Xiaoshuang Chen State Key Laboratory of Infrared Physics Shanghai Institute of Technical PhysicsChinese Academy of Sciences500 Yu Tian Road200083 ShanghaiChina University of Chinese Academy of Sciences 19 Yuquan Road100049 BeijingChina State Key Laboratory for Information Photonics and Optical Communications School of Electronic EngineeringBeijing University of Posts and Telecommunications100876 BeijingChina

Filterless light-ellipticity-sensitive optoelectronic response generally has low discrimination,thus severely hindering the development of monolithic polarization ***,we achieve a breakthrough based on a configurable circular-polarization-dependent optoelectronic silent state created by the superposition of two photoresponses with enantiomerically opposite ellipticity *** zero photocurrent and the significantly suppressed noise of the optoelectronic silent state singularly enhance the circular polarization extinction ratio(CPER)and the sensitivity to light ellipticity *** CPER of our device approaches infinity by the traditional *** newly established CPER taking noise into account is 3-4 orders of magnitude higher than those of ordinary integrated circular polarization detectors,and it remains high in an expanded wavelength *** noise equivalent light ellipticity difference goes below 0.009° Hz-1/2 at modulation frequencies above 1000 Hz by a light power of 281 *** scheme brings a leap in developing monolithic ultracompact circular polarization detectors.

关键词： circular state ordinary

Intelligent microneedle patch with prolonged local release of hydrogen and magnesium ions for diabetic wound healing

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Bioactive Materials 2023年第6期24卷 463-476页

作者： Pei Wang Jiayingzi Wu Haiyan Yang Hengke Liu Tianyu Yao Chang Liu Yan Gong Mingsong Wang Guangyu Ji Peng Huang xiansong Wang Department of Thoracic Surgery Shanghai Key Laboratory of Tissue EngineeringShanghai Ninth People’s HospitalShanghai Jiao Tong University School of MedicineShanghai200011China Marshall Laboratory of Biomedical Engineering International Cancer CenterLaboratory of Evolutionary Theranostics(LET)School of Biomedical EngineeringShenzhen University Medical SchoolShenzhen518060China Center of Hydrogen Science Shanghai Jiao Tong UniversityShanghai200240China

Diabetes mellitus,an epidemic with a rapidly increasing number of patients,always leads to delayed wound healing associated with consistent pro-inflammatory M1 polarization,decreased angiogenesis and increased reactive oxygen species(ROS)in the ***,a poly(lactic-co-glycolic acid)(PLGA)-based microneedle patch loaded with magnesium hydride(MgH_(2))(MN-MgH_(2))is manufactured for defeating diabetic *** application of microneedle patch contributes to the transdermal delivery and the prolonged release of MgH_(2) that can generate hydrogen(H_(2))and magnesium ions(Mg^(2+))after reaction with body *** released H_(2) reduces the production of ROS,transforming the pathological microenvironment induced by diabetes ***,the released Mg^(2+)promotes the polarization of pro-healing M2 ***,cell proliferation and migration are improved,and angiogenesis and tissue regeneration are *** intelligent microneedle patch provides a novel way for accelerating wound healing through steadily preserving and releasing of H_(2) and Mg^(2+)locally and sustainably.

关键词： Microneedle patch Magnesium hydride Hydrogen Magnesium ion Diabetic wound healing

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色酚废水处理新方法

山东化工 2024年第1期53卷 249-251,255页

作者：黄长亮于秀明高冬云邵健屈莉铭于宪松山东世纪阳光科技有限公司山东济宁272412

色酚是常用红色偶氮颜料的偶合组分,在其生产过程中会产生大量的高COD、高色度的含磷废水。本文通过酸析结合络合萃取,活性炭吸附脱色工艺除去色酚AS废水中的有机物,并对每一步废水的COD分析,计算了COD去除率。然后对活性炭吸附过滤后... 详细信息

色酚是常用红色偶氮颜料的偶合组分,在其生产过程中会产生大量的高COD、高色度的含磷废水。本文通过酸析结合络合萃取,活性炭吸附脱色工艺除去色酚AS废水中的有机物,并对每一步废水的COD分析,计算了COD去除率。然后对活性炭吸附过滤后的废水进行蒸发浓缩,得到了符合行业标准合格品的白色亚磷酸固体。实验结果表明:酸析、络合萃取加活性炭吸附脱色工艺能够达到分离色酚废水中有机物和水的目的,蒸发浓缩得到的亚磷酸的质量符合行业标准,该废水处理方法接近绿色,适合工业化生产。

关键词：色酚络合萃取亚磷酸活性炭吸附脱色

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TyG指数与冠状动脉钙化的关系研究

临床医学研究与实践 2024年第18期9卷 5-8页

作者：王培育金富璐王莉蒋雨枫曾钇尧常先松赵良平苏州大学附属第二医院心内科江苏苏州215004 苏州大学附属第二医院浒关院区急诊科江苏苏州215151 苏州大学附属第四医院心内科江苏苏州215000

目的探究甘油三脂-葡萄糖(TyG)指数与冠状动脉钙化(CAC)的关系。方法回顾性纳入1572例经冠状动脉计算机断层扫描血管造影(CTA)检查患者为研究对象,根据冠脉钙化积分(CACS)将其分为钙化组(CACS≥1分)和无钙化组(CACS=0分)。采用多因素Log... 详细信息

目的探究甘油三脂-葡萄糖(TyG)指数与冠状动脉钙化(CAC)的关系。方法回顾性纳入1572例经冠状动脉计算机断层扫描血管造影(CTA)检查患者为研究对象,根据冠脉钙化积分(CACS)将其分为钙化组(CACS≥1分)和无钙化组(CACS=0分)。采用多因素Logistic回归分析评估CAC发生的影响因素。结果1572例患者中,存在CAC的患者808例(钙化组);无CAC的患者764例(无钙化组)。钙化组的男性占比、年龄、高血压史占比、糖尿病史占比、TyG指数、空腹血糖、糖化血红蛋白、血尿素氮、血肌酐、C反应蛋白水平高于无钙化组(P<0.05)。Logistic回归分析显示,年龄、高血压史、糖尿病史、TyG指数、血肌酐、C-反应蛋白是CAC发生的独立危险因素(P<0.05)。结论TyG指数与CAC的发生独立相关,其对CAC的发生有较高预测价值。

关键词：冠状动脉钙化甘油三脂-葡萄糖指数胰岛素抵抗

Graphene/SrTiO3 interface-based UV photodetectors with high responsivity

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Chinese Physics B 2021年第3期30卷 540-545页

作者： Heng Yue Anqi Hu Qiaoli Liu Huijun Tian Chengri Hu xiansong Ren Nianyu Chen Chen Ge Kuijuan Jin Xia Guo State Key Laboratory for Information Photonics and Optical Communications School of Electronic EngineeringBeijing University of Posts and TelecommunicationsBeijing 100876China Beijing National Laboratory for Condensed Matter Physics Institute of PhysicsChinese Academy of SciencesBeijing 100190China

Strontium titanate(SrTiO3),which is a crucial perovskite oxide with a direct energy band gap of 3.2 eV,holds great promise for ultraviolet(UV)***,the response performance of the conventional SrTiO3-based photodetectors is limited by the large relative dielectric constant of the material,which reduces the internal electric field for electron-hole pair separation to form a current collected by ***,graphene/semiconductor hybrid photodetectors by van-der-Waals heteroepitaxy method demonstrate ultrahigh sensitivity,which is benefit from the interface junction architecture and then prolonged lifetime of photoexcited ***,a graphene/SrTiO3 interface-based photodetector is demonstrated with an ultrahigh responsivity of 1.2×106 A/W at the wavelength of 325 nm and∼2.4×104 A/W at 261 *** corresponding response time is in the order of∼*** with graphene/GaN interface junctionbased hybrid photodetectors,∼2 orders of magnitude improvement of the ultrahigh responsivity originates from a gain mechanism which correlates with the large work function difference induced long photo-carrier lifetime as well as the low background carrier *** performance of high responsivity and fast response speed facilitates SrTiO3 material for further efforts seeking practical applications.

关键词： interface SrTiO3 ultraviolet photodetector high responsivity

城市化与能源消费关系的动态计量分析——以陕西省电力消费为例

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城市发展研究 2009年第3期16卷 92-98页

作者：黄献松南京理工大学经济管理学院

运用经济计量方法,实证了陕西省城市化与能源消费之间的动态相关性,并利用因素分解模型定量测算出陕西城市化对能源消费变动的贡献份额。结果表明,陕西省城市化与能源消费量之间存在协整关系,但这种长期均衡的短期调整幅度不大;现阶段... 详细信息

运用经济计量方法,实证了陕西省城市化与能源消费之间的动态相关性,并利用因素分解模型定量测算出陕西城市化对能源消费变动的贡献份额。结果表明,陕西省城市化与能源消费量之间存在协整关系,但这种长期均衡的短期调整幅度不大;现阶段城市化对陕西能源需求的贡献作用尚比较小,且呈现逐年下降的趋势。因此,能源需求不会成为制约陕西省城市化进程中的瓶颈。

关键词：城市化能源消费协整分析因素分解模型