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Nano Research 2020年第12期13卷 3387-3395页

作者： Jiejun Ren xiaopeng zhou Yuhua Wang Department of Materials Science School of Physical Science and TechnologyKey Laboratory of Special Function Materials and Structure Design of Ministry of EducationNational and Local Joint Engineering Laboratory for Optical Conversion Materials and Technology of National Development and Reform CommissionLanzhou UniversityLanzhou730000China

Currently,lead halide perovskite quantum dots(PeQDs)have attracted great attention due to their spectacular photophysical ***,the toxicity of Pb2+heavy metal ions in CsPbX3 PeQDs limits their practical ***,a facile post-treatment doping method is proposed,which enables the preparation of highly luminescent low-toxic CsPbX3:Mn^2+PeQDs from nonluminescent Cs4PbX6 PeQDs at water *** monodispersed CsPbX3:Mn^2+PeQDs exhibit excellent photophysical properties,including high photoluminescence quantum yield up to 87%.The reaction process and doping mechanism are deeply explored through in-situ *** simply adjusting the halide composition of the original Cs4PbX6 PeQDs or Mn doping concentration,a series of CsPbX3:Mn^2+PeQDs with adjustable emission could be ***,the CsPbX3:Mn^2+Q-LED was fabricated and exhibited excellent orange light with the color coordinates of(0.564,0.399),correlated color temperature(CCT)of 1,918 K,and luminous efficiency(LE)of 24 lm/W,which illustrate the great promise in light emitting diode(LED)*** work not only provides a facile method for the preparation of highly luminescent low-toxic CsPbX3:Mn^2+PeQDs,but also provides insights into the mechanism of doping process.

关键词： perovskite quantum dots CsPbX3:Mn2+ Cs4PbX6 phase transformation Mn doping

越鞠解郁汤配合开郁针刺治疗抑郁障碍的临床观察

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智慧健康 2024年第10期10卷 62-64,68页

作者：周晓鹏李锐西安庆华医院中医康复科陕西西安710025 长安医院精神科陕西西安710016

目的分析越鞠解郁汤+开郁针刺在抑郁障碍中的疗效。方法选取2021年3月—2022年5月本院收治的60例抑郁障碍患者为研究对象,以随机数字分配法分为常规组(越鞠解郁汤治疗)和干预组(越鞠解郁汤+开郁针刺治疗),每组30例,对比组间临床效果。... 详细信息

目的分析越鞠解郁汤+开郁针刺在抑郁障碍中的疗效。方法选取2021年3月—2022年5月本院收治的60例抑郁障碍患者为研究对象,以随机数字分配法分为常规组(越鞠解郁汤治疗)和干预组(越鞠解郁汤+开郁针刺治疗),每组30例,对比组间临床效果。结果与常规组相比,干预组总有效率、治疗后生活质量更高,治疗后抑郁、焦虑程度评分更低,组间对比差异有统计学意义(P<0.05)。结论越鞠解郁汤+开郁针刺治疗抑郁障碍效果明显,值得临床借鉴。

关键词：抑郁障碍开郁针刺越鞠解郁汤焦虑自评量表焦虑自评量表

Electromagnetic behavior of two-dimensional quasi-crystal left-handed materials with dendritic unit

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Chinese Science Bulletin 2008年第4期53卷 632-637页

作者： zhou Xin ZHAO xiaopeng Institute of Electrorheological Technology Northwestem Polytechnical University Xi'an 710072 China

We demonstrated a two-dimensional quasi-crystal dendritic structure model with negative *** microwave transmission and reflection properties of periodic and quasi-crystal dendritic structure mediums with varied angle incidence were *** results showed that the resonant peaks of quasi-crystal negative permeability samples and left-handed samples had tiny shift with the altering of incident *** of the influence of coupling between quasi-crystal dendritic cells,the resonance of the entire material was enhanced or *** quasi-crystal dendritic structure model will provide an easy method to design isotropic left-handed materials(LHMs).

关键词：左手材料树枝状结构准晶体电磁性能

Estimating Primaries by Sparse Inversion with Cost-Effective Computation

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Communications in Computational Physics 2020年第6期28卷 477-497页

作者： xiaopeng zhou Yike Liu Lanshu Bai Key Laboratory of Petroleum Resource Research Institute of Geology and GeophysicsChinese Academy of SciencesBeijing 100029China University of Chinese Academy of Sciences Beijing 100049China China Earthquake Networks Center Beijing 100045China

Recently,attenuation of surface-related multiples is implemented by a large-scale sparsity-promoting inversion where the primaries are iteratively estimated without a subtraction process,which is called estimation of primaries by sparse inversion(EPSI).By inverting for surface-free impulse responses,EPSI simultaneously updates the primaries and multiples,both of which contribute to explaining the input data,and therefore promote the global convergence ***,one of the major concerns of EPSI may lie in its high computational *** this paper,based on the same gradient-descent framework with EPSI,we develop a computationally cost-effective primary estimation approach in which a newly defined parameterization of primary-multiple model is adopted and an efficiently defined analytical step-length is *** developed approach can yield a better primary estimation at less computational cost as compared to EPSI,which is verified by two synthetic datasets in numerical ***,we apply this approach to a shallow-water field dataset and achieve a desirable performance.

关键词： Inverse problem multiple removal primary estimation impulse response

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基于电介质超材料的中红外超窄带吸波器

安徽大学学报（自然科学版） 2024年第2期48卷 40-45页

作者：廖艳林周霄鹏卢一博赵艳谌正艮安徽大学纽约石溪学院安徽合肥230039 安徽医科大学生物医学工程学院安徽合肥230032

电介质超材料因具有极低欧姆损耗受到广泛关注.提出一种基于电介质超材料的中红外超窄带吸波器,该吸波器由顶层电介质微结构、中间层电介质膜和基底金属构成.研究结果表明:该吸波器在中红外波段存在带宽为2.40nm的吸收峰;电场主要分布... 详细信息

电介质超材料因具有极低欧姆损耗受到广泛关注.提出一种基于电介质超材料的中红外超窄带吸波器,该吸波器由顶层电介质微结构、中间层电介质膜和基底金属构成.研究结果表明:该吸波器在中红外波段存在带宽为2.40nm的吸收峰;电场主要分布于顶层硅微结构之间的间隙,导致吸收损耗功率显著降低,进而实现吸收带宽压缩;作为传感器时,在中红外波段该吸波器的品质因数可达80.可见,该吸波器可应用于中红外热辐射光源和高性能传感器.

关键词：超材料中红外吸波器传感器热辐射源

无托槽隐形矫正推磨牙向后在成人正畸中的应用效果分析

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中国社区医师 2024年第18期40卷 62-64页

作者：马媛媛周晓鹏王瑜陇南市第一人民医院口腔科甘肃陇南746000 陇南市第一人民医院胸外科甘肃陇南746000 重庆医科大学附属口腔医院口腔科重庆400010

目的:分析无托槽隐形矫正推磨牙向后在成人正畸中的应用效果。方法:选取2017年1月—2023年1月陇南市第一人民医院收治的60例口腔正畸患者作为研究对象,按照随机数字表法分为观察组、对照组,各30例。对照组应用固定矫治器治疗,观察组应... 详细信息

目的:分析无托槽隐形矫正推磨牙向后在成人正畸中的应用效果。方法:选取2017年1月—2023年1月陇南市第一人民医院收治的60例口腔正畸患者作为研究对象,按照随机数字表法分为观察组、对照组,各30例。对照组应用固定矫治器治疗,观察组应用无托槽隐形矫正。比较两组正畸效果。结果:治疗后,两组探诊出血指数、牙龈指数、牙齿松动度、探诊深度低于治疗前,且观察组低于对照组,差异有统计学意义(P0.05)。结论:无托槽隐形矫正推磨牙向后在成人正畸中的应用效果显著,可改善患者牙周指数、咀嚼功能,提高患者满意度,且安全性较高。

关键词：正畸无托槽隐形矫正固定矫治器推磨牙向后

Measurement of solar pp neutrino flux using electron recoil data from PandaX-4T commissioning run

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CHINESE PHYSICS C 2024年第9期48卷 1-7,300页

作者： Lu, Xiaoying Abdukerim, Abdusalam Bo, Zihao Chen, Wei Chen, Xun Chen, Yunhua Cheng, Chen Cheng, Zhaokan Cui, Xiangyi Fan, Yingjie Fang, Deqing Geng, Lisheng Giboni, Karl Guo, Xuyuan Han, Chencheng Han, Ke He, Changda He, Jinrong Huang, Di Huang, Junting Huang, zhou Hou, Ruquan Hou, Yu Ji, Xiangdong Ju, Yonglin Li, Chenxiang Li, Jiafu Li, Mingchuan Li, Shuaijie Li, Tao Lin, Qing Liu, Jianglai Lu, Congcong Luo, Lingyin Luo, Yunyang Ma, Wenbo Ma, Yugang Mao, Yajun Meng, Yue Ning, Xuyang Pang, Binyu Qi, Ningchun Qian, Zhicheng Ren, Xiangxiang Shaheed, Nasir Shang, Xiaofeng Shao, Xiyuan Shen, Guofang Shen, Manbin Si, Lin Tao, Yi Wang, Anqing Wang, Meng Wang, Qiuhong Wang, Shaobo Wang, Siguang Wang, Wei Wang, Xiuli Wang, Xu Wang, zhou Wei, Yuehuan Wu, Mengmeng Wu, Weihao Wu, Yuan Xiao, Mengjiao Xiao, Xiang Xiong, Kaizhi Yan, Binbin Yan, Xiyu Yang, Yong Yuan, Ying Yuan, Zhe Yun, Youhui Zeng, Xinning Zhang, Minzhen Zhang, Peng Zhang, Shibo Zhang, Shu Zhang, Tao Zhang, Wei Zhang, Yang Zhang, Yingxin Zhang, Yuanyuan Zhao, Li zhou, Jifang zhou, Ning zhou, xiaopeng zhou, Yubo zhou, Zhizhen Shandong Univ Inst Frontier & Interdisciplinary Sci Res Ctr Particle Sci & Technol Qingdao 266237 Peoples R China Shandong Univ Key Lab Particle Phys & Particle Irradiat Minist Educ Qingdao 266237 Peoples R China Shanghai Jiao Tong Univ Sch Phys & Astron Shanghai Key Lab Particle Phys & Cosmol Key Lab Particle Astrophys & Cosmol MOE Shanghai 200240 Peoples R China Shanghai Jiao Tong Univ Tsung Dao Lee Inst New Cornerstone Sci Lab Shanghai 200240 Peoples R China Shanghai Jiao Tong Univ Sichuan Res Inst Chengdu 610213 Peoples R China Jinping Deep Underground Frontier Sci & Dark Matt Liangshan 615000 Peoples R China Yalong River Hydropower Dev Co Ltd 288 Shuanglin Rd Chengdu 610051 Peoples R China Shanghai Jiao Tong Univ SJTU Paris Elite Inst Technol Shanghai 200240 Peoples R China Shanghai Jiao Tong Univ Sch Mech Engn Shanghai 200240 Peoples R China Sun Yat Sen Univ Sch Phys Guangzhou 510275 Peoples R China Sun Yat Sen Univ Sino French Inst Nucl Engn & Technol Zhuhai 519082 Peoples R China Yantai Univ Dept Phys Yantai 264005 Peoples R China Fudan Univ Inst Modern Phys Key Lab Nucl Phys & Ion Beam Applicat MoE Shanghai 200433 Peoples R China Beihang Univ Sch Phys Beijing 102206 Peoples R China Beihang Univ Beijing Key Lab Adv Nucl Mat & Phys Beijing 102206 Peoples R China Beihang Univ Peng Huanwu Collaborat Ctr Res & Educ Beijing 100191 Peoples R China Chinese Acad Sci Inst Modern Phys Southern Ctr Nucl Sci Theory SCNT Huizhou 516000 Peoples R China Univ Maryland Dept Phys College Pk MD 20742 USA Univ Sci & Technol China State Key Lab Particle Detect & Elect Hefei 230026 Peoples R China Univ Sci & Technol China Dept Modern Phys Hefei 230026 Peoples R China Peking Univ Sch Phys Beijing 100871 Peoples R China Nankai Univ Sch Phys Tianjin 300071 Peoples R China Sun Yat Sen Univ Sch Phys & Astron Zhuhai 519082 Peoples R China

The proton-proton (pp) fusion chain dominates the neutrino production in the Sun. The uncertainty of the predicted pp neutrino flux is at the sub-percent level, whereas that of the best measurement is O(10%). In this study, for the first time, we measure solar pp neutrinos in the electron recoil energy range from 24 to 144 keV using the PandaX-4T commissioning data with 0.63 tonne x year exposure. The pp neutrino flux is determined as, (8.0 +/- 3.9 (stat) +/- 10.0 (syst) x 10(10) s(-1) cm(-2) which is consistent with the Standard Solar Model and existing measurements, corresponding to an upper flux limit of 23.3 x 10(10) at 90% C.L..

关键词： solar pp neutrino flux PandaX-4T electron recoil spectrum GENERATION

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溜砂坡开挖的稳定性分析

高原科学研究 2024年第2期8卷 126-132页

作者：叶唐进张宇何佳林周小朋杨雨蒿四川建筑职业技术学院四川成都610399 西藏大学工学院西藏拉萨850000

为探明不同含水率对溜砂坡开挖稳定性的影响,文章通过对溜砂坡碎屑物进行工程地质参数测试,运用FLAC3D对不同含水率条件下的溜砂坡进行稳定性分析,并通过物理模型试验验证其开挖的稳定性。研究表明:(1)通过室内测试得到,随着溜砂坡含水... 详细信息

为探明不同含水率对溜砂坡开挖稳定性的影响,文章通过对溜砂坡碎屑物进行工程地质参数测试,运用FLAC3D对不同含水率条件下的溜砂坡进行稳定性分析,并通过物理模型试验验证其开挖的稳定性。研究表明:(1)通过室内测试得到,随着溜砂坡含水率的增加,其碎屑物粘聚力呈现先增大后减小的趋势,内摩擦角则呈现出降低的趋势;(2)通过数值模拟可知随着含水率的逐渐增加,边坡开挖面应力、位移和安全系数均呈现出先增加后减小的趋势,当边坡含水率为11%时稳定性最高;(3)通过物理模型试验所得到的边坡稳定性特征与数值模拟一致,验证了数值模拟的准确性。研究结果可为类似溜砂坡的开挖研究提供参考。

关键词：溜砂坡含水率开挖稳定性 FLAC3D

Analysis of statistical thermodynamic model for binary protein adsorption equilibria on cation exchange adsorbent

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Frontiers of Chemical Science and Engineering 2007年第2期1卷 103-112页

作者： zhou xiaopeng SU Xueli SUN Yan Department of Biochemical Engineering School of Chemical Engineering and TechnologyTianjin UniversityTianjin 300072China

A study of nonlinear competitive adsorption equilibria of proteins is of fundamental importance in understanding the behavior of preparative chromatographic *** work describes the nonlinear binary protein adsorption equilibria on ion exchangers by the statistical thermodynamic(ST)*** single-component and binary protein adsorption isotherms of bovine hemoglobin(Hb)and bovine serum albumin(BSA)on SP Sepharose FF were determined by batch adsorption experiments in 0.05 mol/L sodium acetate buffer at three pH values(4.5,5.0 and 5.5)and three NaCl concentrations(0.05,0.10 and 0.15 mol/L)at pH *** ST model was found to depict the effects of pH and ionic strength on the single-component equilibria well,with model parameters depending on the pH and ionic ***,the ST model gave acceptable fitting to the binary adsorption data with the fitted single-component model parameters,leading to the estimation of the binary ST model *** effects of pH and ionic strength on the model parameters are reasonably interpreted by the electrostatic and thermodynamic *** demonstrate the availability of the ST model for describing nonlinear competitive protein adsorption equilibria in the presence of two proteins.

关键词： equilibrium model ion exchange electrostatic adsorption binary protein adsorption

Hydrogen and nitrogen absorption properties of Ce-added Zr_(2)(Fe_(1-x)Ni_(x)) alloys

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Journal of Rare Earths 2024年第6期42卷 1136-1141,I0005页

作者： Kai Yin xiaopeng Liu State Key Laboratory of Advanced Materials for Smart Sensing GRINM Group Co.Ltd.Beijing10088China GRIMAT Engineering Institute Co. Ltd.Beijing101407China General Research Institute of Nonferrous Metals Beijing100088China

To improve the nitriding resistance of Zr_(2)Fe alloy,the Ce-added Zr_(2)(Fe_(1-x)Ni_(x))(x=0,0.15,0.3,0.5)alloys were prepared by magnetic levitation melting *** effects of Ni substitution for Fe on the phase structure,hydrogen and nitrogen absorption properties of the alloys were investigated by X-ray diffraction,scanning electron microscopy and p-c isotherm *** experimental results show that Ni substitution can effectively inhibit the formation of both α-Zr and ZrFe_(2) phases and promote the formation of C16 structure Zr_(2)(Fe,Ni)phase,causing Ni-substituted alloys to exhibit low nitrogen absorption rate and *** 623 K under 0.5 MPa nitrogen pressure,the nitrogen absorption capacity of Ce-added Zr_(2)(Fe_(0.5)Ni_(0.5))alloy reaches to 0.8 mL/g,much lower than that of Zr_(2)Fe alloy(1.5 mL/g).Ni substitution decreases the crystal cell volume of the C_(16)Zr_(2)(Fe,Ni)phase,resulting in an increase in the hydrogen absorption equilibrium *** 623 K under 0.05 MPa hydrogen pressure,the hydrogen absorption capacity decreases from 1.46 wt%of Zr_(2)Fe alloy to 1.41 wt%of Ce-added Zr_(2)(Fe_(0.5)Ni_(0.5))alloy.

关键词： Zr_(2)Fe alloy Ce Pressure-composition isotherm Hydrogen absorption Nitrogen absorption Rare earths