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Nano Research 2016年第4期9卷 1148-1158页

作者： zongyuan wang Minyue Li Wei wang Min Fang Qidi Sun Changjun Liu Collaborative Innovation Center of Chemical Science and Engineering School of Chemical Engineering and Technology Tianjin University Tianjin 300072 China

In recent years, surface-enhanced Raman spectroscopy （SERS） has developed rapidly and is used for the detection of molecules and biomolecules in liquids. However, few studies have focused on SERS using a water surface as the substrate. A floating metal film on water is desirable for an enhanced SERS performance. In this work, silver nanopartides （Ag NPs） encased in poly（vinylpyrrolidone） films （Ag-PVP films） were synthesized on the surface of an aqueous solution by room temperature electron reduction. A floating silver film on a water surface was thereby achieved and is reported for the first time. The synthesized Ag-PVP film is an excellent flexible substrate for SERS and has other potential appli- cations. Using the floating silver film as a flexible SERS substrate, 10-11 M of 4-aminothiophenol, 10^-6 M of riboflavin, 10^-9 M of 4-mercaptobenzoic acid, 10^-7 M of 4-mercaptophenol, and 10^-7 M of 4-aminobenzoic acid are identified, demonstrating potential use for the floating substrate in the liquid-phase detection of molecules.

关键词： liquid phase detection surface-enhanced Raman gas/liquid silver film poly(vinylpyrrolidone) electron reduction

Manipulating micro-electric field and coordination-saturated site configuration boosted activity and safety of frustrated single-atom Cu/O Lewis pair for acetylene hydrochlorination

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Nano Research 2023年第7期16卷 9039-9049页

作者： Junchen Peng Dandan Dong zongyuan wang Hong Yang Dongyang Qiao Qinqin wang Wei Sun Minmin Liu Jiajun wang Mingyuan Zhu Bin Dai Fei He Chaofeng Huang School of Chemistry and Chemical Engineering/State Key Laboratory Incubation Base for Green Processing of Chemical Engineering Shihezi UniversityShihezi 832000China School of Chemistry and Chemical Engineering Southeast UniversityNanjing 211189China School of Materials Science and Engineering Key Laboratory of Advanced Ceramics and Machining Technology of Ministry of EducationTianjin UniversityTianjin 300072China College of Chemistry&Chemical Engineering Yantai UniversityYantai 264010China School of Material Science and Engineering University of JinanJinan 250022China

Simultaneously boosting acetylene hydrochlorination activity and avoiding formation of explosive copper acetylide over Cu-based catalyst,which represented a promising alternative to Hg-based and noble metal catalysts,remained ***,we fabricated a frustrated single-atom Cu/O Lewis pair catalyst(Cu/O-FLP)by coupling epoxide group(C-O-C)with atomdispersed Cu-cis-N_(2)C_(2)Cl center to address this *** basic epoxy site modulated the electron-deficient state of Lewisacidic Cu center and paired with the Cu-cis-N_(2)C_(2)Cl moiety to preferentially break HCl into different electronegative Cu-Clδ-and C-O-H^(δ+)intermediates,which further induced both an extra localized electric field to polarize acetylene and a upshift of the dband center of catalyst,thereby promoting adsorption and enrichment of acetylene by enhancing the dipolar interaction between acetylene and active ***,the generated Cu-Clδ-and C-O-H^(δ+)drastically reduced the energy barrier of ratelimiting step and made vinyl chloride easier to desorb from the Lewis-basic oxygen-atom site rather than traditional Lewis-acidic Cu *** superiorities ensured a higher activity of Cu/O-FLP compared with its ***,preferential dissociation of HCl endowed single-atom Cu with the coordination-saturated configuration,which impeded formation of explosive copper acetylide by avoiding the direct interaction between Cu and acetylene,ensuring the intrinsic safety during catalysis.

关键词： acetylene hydrochlorination Lewis pair single-atom Cu site configuration electric field

Applying Dairy Cow Behavior in Management Practice

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Journal of Northeast Agricultural University(English Edition) 2009年第1期16卷 86-92页

作者： YUAN Kai LIU Zongping wang zongyuan College of Veterinary Medicine Yangzhou University Yangzhou 225009 China

Applying dairy cow behavior in management practice is an effective way of improving cow health, welfare and performance. This paper first reviewed daily time budget and normal patterns of dairy cow behavior, and then discussed the influence of major management conditions and practices （such as competitive environments, stocking density, grouping strategies） on cow＇s feeding, lying and social behavior. Finally, new findings of using feeding behavior to predict disorders in transition period were addressed. It was suggested that dairy researchers and farmers should take advantage of related knowledge of dairy cow behavior to improve dairy cow health and welfare. More research is required to further study dairy cow behavior so as to better apply it in practical management and meet the needs of production.

关键词： dairy cows behavior management

BICs-enhanced active terahertz wavefront modulator enabled by laser-cut graphene ribbons

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Photonics Research 2023年第7期11卷 1185-1195页

作者： JIANZHOU HUANG BIN HU GUOCUI wang zongyuan wang JINLONG LI JUAN LIU YAN ZHANG Beijing Engineering Research Center for Mixed Reality and Advanced Display School of Optics and PhotonicsBeijing Institute of TechnologyBeijing 100081China Beijing Key Laboratory for Metamaterials and Devices Key Laboratory of Terahertz OptoelectronicsMinistry of Educationand Beijing Advanced Innovation Center for Imaging TechnologyDepartment of PhysicsCapital Normal UniversityBeijing 100048China

Graphene-based terahertz(THz)metasurfaces combined with metallic antennas have the advantages of ultrasmall thickness,electrical tunability,and fast tuning ***,their tuning ability is limited by nonindependently tunable pixels and low modulation depth due to the ultra-small thickness of ***,we demonstrate a reconfigurable THz phase modulator with 5×5 independently tunable units enabled by switching the voltages applied on 10 graphene ribbons prepared by laser *** addition,by introducing quasibound states in the continuum resonance through a designed double C-shaped antenna,the efficiency of the device is enhanced by 2.7–3.6 times under different graphene chemical *** results demonstrate that a focus can be formed,and the focal length is changed from 14.3 mm to 22.6 *** work provides potential for compact THz spatial light modulators that may be applied in THz communication,detection,and imaging.

关键词： modulator tuning laser

学生t量测分布下鲁棒粒子滤波算法的设计与实现

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电子与信息学报 2019年第12期41卷 2957-2964页

作者：王宗原周卫东哈尔滨工程大学自动化学院哈尔滨150001 哈尔滨工程大学数学科学学院哈尔滨150001

野值是一种异于总体数据的非高斯量测值,在实际传输中野值的加入常使信号出现厚尾特性。粒子滤波是基于贝叶斯框架的适用于非线性/非高斯系统的一种滤波方法。如果在量测噪声中存在野值会使粒子滤波的精度下降。该文利用学生t分布建模... 详细信息

野值是一种异于总体数据的非高斯量测值,在实际传输中野值的加入常使信号出现厚尾特性。粒子滤波是基于贝叶斯框架的适用于非线性/非高斯系统的一种滤波方法。如果在量测噪声中存在野值会使粒子滤波的精度下降。该文利用学生t分布建模量测噪声模型,结合变分贝叶斯(VB)递推方法设计一种新颖的边缘粒子滤波(MPF-VBM),它在滤波同时可对量测噪声的包括均值在内的全部参数进行实时估计。进一步,利用该估计算法,在量测噪声时变条件下研究了噪声关联的粒子滤波算法(MPF-VBM-COR)。通过对典型单变量增长模型的仿真,验证了所提两种算法相比于已有算法在状态估计上具有更优越的鲁棒性。

关键词：粒子滤波变分贝叶斯均值估计噪声关联学生t分布

柔性空间机械臂系统的模糊滑模神经网络控制及柔性振动主动抑制

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空间科学学报 2013年第5期33卷 569-576页

作者：王宗源陈力福州大学机械工程及自动化学院福州350108 福建省制造业数字化设计工程研究中心福州350002

研究了参数不确定漂浮基柔性空间机械臂关节空间的轨迹跟踪及柔性振动主动控制问题.运用虚拟力概念,生成能同时反映柔性振动和刚性运动的虚拟期望轨迹,设计了一种自适应非奇异Terminal滑模控制器来跟踪该虚拟期望轨迹,以实现载体姿态及... 详细信息

研究了参数不确定漂浮基柔性空间机械臂关节空间的轨迹跟踪及柔性振动主动控制问题.运用虚拟力概念,生成能同时反映柔性振动和刚性运动的虚拟期望轨迹,设计了一种自适应非奇异Terminal滑模控制器来跟踪该虚拟期望轨迹,以实现载体姿态及关节稳定跟踪运动轨迹并对所产生的柔性振动进行主动抑制的控制目标.所设计的控制器结合了Terminal滑模控制快速收敛性,模糊小波神经网络优良的函数逼近特性及鲁棒技术处理逼近误差的优势,利用自适应算法在线自适应调节模糊小波神经网络的所有网络权值和参数,使控制器具有很强的鲁棒性.仿真实验证明了所提控制方案的有效性.

关键词：漂浮基柔性空间机械臂虚拟期望轨迹非奇异Terminal滑模控制模糊小波神经网络

Rao-Blackwellised粒子滤波及在重力梯度导航中应用

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弹箭与制导学报 2013年第6期33卷 153-155,159页

作者：王宗原孙枫哈尔滨工程大学哈尔滨150001

在导航、定位等研究领域会用到一类具有线性、非线性混合状态的模型。其特点为量测方程仅是某些状态的非线性函数,而状态方程是线性或弱非线性方程组。这类问题可通过状态分解的Rao-Blackwellised思想求解,它是非线性状态用粒子滤波求... 详细信息

在导航、定位等研究领域会用到一类具有线性、非线性混合状态的模型。其特点为量测方程仅是某些状态的非线性函数,而状态方程是线性或弱非线性方程组。这类问题可通过状态分解的Rao-Blackwellised思想求解,它是非线性状态用粒子滤波求解、非线性状态粒子给定下边缘出线性状态,用解析的方法 Kalman滤波求解。文中对此进行理论研究并给出算法过程。通过对水下重力梯度辅助导航研究,发现满足此类模型条件,故应用此算法进行仿真,把它与APO-PF(人工物理优化粒子滤波)算法在相同初始误差条件进行比较研究。结果表明,该算法对于水下重力梯度组合导航更加高效。

关键词：线性非线性模型非线性滤波组合导航重力梯度

An EKF Algorithm Based on a Skew-t Measurement Noise Model

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An EKF Algorithm Based on a Skew-t Measurement Noise Model

Electron-induced rapid crosslinking in supramolecular metal-peptide assembly and chemically responsive disaggregation for catalytic application

第36届中国控制会议

作者： zongyuan wang Weidong Zhou Ling Xue Huanzhang Ling Tao Chen College of Science Harbin Engineering University College of Automation Harbin Engineering University

In many practical problems,measurement noise data are often skewed,heterogeneous,or containing *** Gaussian or even Student-t measurement noise settings are often not fit to the request of system.A novel EKF filtering algorithm for nonlinear discrete state-space models with skewed Student-t measurement noise is *** algorithm makes use of the method of Variational Bayes to make approximation of the posterior of system state based on the known measurement noise *** prediction uses the standard step of *** on the model of Signal tracking with skew-t measurement noise indicates the proposed algorithm outperforms the standard EKF for the set noise conditions.

关键词： skew t-distribution Extended Kalman Filter Variational Bayes robust filtering

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Chinese Journal of Catalysis 2021年第3期42卷 376-387页

作者： zongyuan wang Jiajun wang Zeyu Sun Wenlong Xiang Chenyang Shen Ning Rui Mingzhu Ding Yingjin Yuan Honggang Cui Chang-jun Liu Collaborative Innovation Center of Chemical Science and Engineering School of Chemical Engineering and TechnologyTianjin UniversityTianjin 300072China Department of Chemical and Biomolecular Engineering and Institute for NanoBioTechnologyThe Johns Hopkins University3400 North Charles StreetBaltimoreMaryland 21218United States Center for Nanomedicine The Wilmer Eye InstituteJohns Hopkins University School of Medicine400 North BroadwayBaltimoreMaryland 21231United States Department of Oncology and Sidney Kimmel Comprehensive Cancer Center The Johns Hopkins University School of MedicineBaltimoreMaryland 21205United States

The applications of supramolecular metal-peptide assemblies as catalyst or catalyst precursor have recent attracted increasing *** this work,a fragment of the amyloid β-peptide,NH_(2)-KLVFF-COOH,was assembled into nanofilms with encapsulated Pd,Pt and Au nanoparticles(NPs)via a one-step room temperature electron induction *** effects of building block,intermolecular interaction,driving force and side-chain on the assembly were *** assembly mechanism was thereby *** crosslinking of peptide monomers results in mainly random and unordered *** obtained metal-peptide assemblies are extremely stable in water at neutral pH for long ***,the metal NPs are able to be responsively released under basic and reductive *** released NPs show a high activity to catalyze the reduction of *** present studies on assembly mechanism and responsive release will be helpful for the design of organic skeletons and also for the future development of peptide stabilized metallic NPs with applications beyond catalysts.

关键词： Metal Peptide Assembly Responsive release Reduction Catalyst

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土壤中游离烃技术的油气化探意义

天然气工业 2004年第6期24卷 30-32,i001页

作者：张宗元王国建中国石化勘探开发研究院石油化探研究所

介绍了游离烃技术方法 ,该方法通过抽取土壤中气体 ,检测其中与油气微渗漏有关的烃类组分 ,确定油气化探异常。研究了游离烃组分的浓度分布特征 ,揭示出烷烃中甲烷 (以YC1 表示 )是独立因子 ,加之其浓度分布分异性好 ,证明了YC1 中储存... 详细信息

介绍了游离烃技术方法 ,该方法通过抽取土壤中气体 ,检测其中与油气微渗漏有关的烃类组分 ,确定油气化探异常。研究了游离烃组分的浓度分布特征 ,揭示出烷烃中甲烷 (以YC1 表示 )是独立因子 ,加之其浓度分布分异性好 ,证明了YC1 中储存与油气有关的信息 ,具有重要的化探意义。通过游离烃组分与其它化探指标关系的分析研究 ,得出了与其它化探指标不相关的认识 ,证明游离烃在其它化探指标中是独立因子 ,指出其具有独立的化探意义。最后阐述了其化探意义表现的 3个方面 :已知区验证效果良好 ;应用地域广阔 ,不仅适用于北方碱性土壤区 ,更适用于南方酸性土壤区 ;YC1 的δ1 3C1 具有良好的应用前景。

关键词：土壤游离烃技术甲烷地球化学勘探油气勘探酸解烃