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Acta Oceanologica Sinica 2006年第5期25卷 55-62页

作者： SUN peiyan BAO Mutai GAO Zhenhui LI Mei zhao Yuhui WANG Xinping ZHOU Qing WANG Xiulin Key Laboratory of Marine Chemistry Theory and Technology of Ministry of Education Ocean University of China Qingdao266003 China North China Sea Monitoring Center State Oceanic Administration Qingdao 266033 China

By gas chromatogram, six crude oils fingerprinting distributed in four oilfields and four oil platforms were analyzed and the corre- sponding normal paraffin hydrocarbon （ including pristane and phytane） concentration was obtained by the internal standard methed. The normal paraffin hydrocarbon distribution patterns of six crude oils were built and compared. The cluster analysis on the normal paraffin hydrocarbon concentration was conducted for classification and some ratios of oils were used for oils comparison. The results indicated： there was a clear difference within different crude oils in different oil fields and a small difference between the crude oils in the same oil platform. The normal paraffin hydrocarbon distribution pattern and ratios, as well as the cluster analysis on the nomad paraffin hydrocarbon concentration can have a better differentiation result for the crude oils with small difference than the original gas chromatogram.

关键词： oil fingerprinting identification gas chromatogram normal paraffin hydrocarbons distribution pattern ratio cluster analysis

Dynamic Colloidal Photonic Crystal Hydrogels with Self-Recovery and Injectability

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Research 2021年第1期2021卷 575-585页

作者： Yue Ma peiyan He Wanli Xie Qiang Zhang Weiling Yin Jianming Pan Miao Wang Xin zhao Guoqing Pan Institute for Advanced Materials School of Materials Science and EngineeringJiangsu UniversityZhenjiangJiangsu 212013China School of Chemistry and Chemical Engineering Jiangsu UniversityZhenjiangJiangsu 212013China Jiangsu Agrochem Laboratory ChangzhouJiangsu 213022China Department of Biomedical Engineering The Hong Kong Polytechnic UniversityHung HomHong KongChina

Simulation of self-recovery and diversity of natural photonic crystal(PC)structures remain great challenges for artificial PC *** by the dynamic characteristics of PC nanostructures,here,we present a new strategy for the design of hydrogel-based artificial PC materials with reversible interactions in the periodic *** dynamic PC hydrogels,derived from self-assembled microgel colloidal crystals,were tactfully constructed by reversible crosslinking of adjacent microgels in the ordered structure via phenylboronate covalent *** proof of concept,three types of dynamic colloidal PC hydrogels with different structural colors were *** the hydrogels showed perfect self-healing ability against physical ***,dynamic crosslinking within the microgel crystals enabled shear-thinning injection of the PC hydrogels through a syringe(indicating injectability or printability),followed by rapid recovery of the structural *** short,in addition to the great significance in biomimicry of self-healing function of natural PC materials,our work provides a facile strategy for the construction of diversified artificial PC materials for different applications such as chem-/biosensing,counterfeit prevention,optical display,and energy conversion.

关键词： materials reversible crosslinking

安图A2000PLUS仪器主轴系统中端面圆跳动的影响因素研究

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机械工程师 2024年第4期 76-78,85页

作者：王培艳秦兵兵仇凌燕李龙海赵鹏安图实验仪器(郑州)有限公司郑州450016

安图A2000PLUS仪器主轴系统中顶端的端面圆跳动受多种因素的影响,其中主要的因素是盘的端面圆跳动或者端面的平面度、轴系统的上下两个接触面的偏摆两方面的影响。文中进行系统的分析并采用推理计算和实际装配验证两种方法得出端面圆跳... 详细信息

安图A2000PLUS仪器主轴系统中顶端的端面圆跳动受多种因素的影响,其中主要的因素是盘的端面圆跳动或者端面的平面度、轴系统的上下两个接触面的偏摆两方面的影响。文中进行系统的分析并采用推理计算和实际装配验证两种方法得出端面圆跳动结果,并对比分析确认端面圆跳动结果的一致性。找到解决端面圆跳动超差问题的方案,同时跟踪方案执行结果,按此设计改进后端面圆跳动合格率由原来的90%提高到100%,为企业解决了难题。

关键词：主轴系统端面圆跳动公差

Self-supported high-entropy alloy electrocatalyst for highly efficient H_(2) evolution in acid condition

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Journal of Materiomics 2020年第4期6卷 736-742页

作者： peiyan Ma Mingming zhao Long Zhang Heng Wang Junfeng Gu Yuchen Sun Wei Ji Zhengyi Fu School of Chemistry Chemical Engineering and Life scienceWuhan University of TechnologyWuhan CityHubei ProvincePR China State Key Lab of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan CityHubei ProvincePR China Engineering Research Center of Environmental Materials and Membrane Technology School of Materials Science and EngineeringWuhan Institute of TechnologyWuhan CityHubei ProvincePR China

Developing non-precious catalysts as Pt substitutes for electrochemical hydrogen evolution reaction(HER)with superior stability in acidic electrolyte is of critical importance for large-scale,low-cost hydrogen production from ***,we report a CoCrFeNiAl high-entropy alloy(HEA)electrocatalyst with self-supported structure synthesized by mechanical alloying and spark plasma sintering(SPS)*** HEA after HF treatment and in situ electrochemical activation for 4000 cycles of cyclic voltammetry(HF-HEAa2)presents favourable activity with overpotential of 73 mV to reach a current density of 10 mA cm^(2) and a Tafel slope of 39.7 mV dec*** alloy effect of Al/Cr with Co/Fe/Ni at atomic level,high-temperature crystallization,as well as consolidation by SPS endow CoCrFeNiAl HEA with high stability in 0.5 M H2SO4 *** superior performance of HF-HEAa2 is related with the presence of metal hydroxides/oxides groups on HEA.

关键词： loy Hydrogen evolution reaction Electrocatalysts Acidic electrolyte Stability

基于ArcGIS的秦岭汉中植烟土壤养分现状及空间分布特征分析

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中国农学通报 2023年第35期39卷 103-110页

作者：刘福童郑梅迎王辉李茂森赵培炎郑邦玺何文勤姚峰任天宝河南农业大学烟草学院/河南省生物炭研究工程技术中心郑州450002 陕西省烟草汉中市公司陕西汉中723000 陕西中烟工业有限责任公司陕西汉中723000

通过分析秦岭汉中地区植烟土壤养分含量,为秦岭汉中植烟土壤科学施肥和土壤健康培育提供理论依据。运用统计学方法和ArcGIS软件分析秦岭汉中植烟土壤养分空间分布规律及特征。研究表明:秦岭汉中植烟土壤有机质、速效氮、有效磷、速效钾... 详细信息

通过分析秦岭汉中地区植烟土壤养分含量,为秦岭汉中植烟土壤科学施肥和土壤健康培育提供理论依据。运用统计学方法和ArcGIS软件分析秦岭汉中植烟土壤养分空间分布规律及特征。研究表明:秦岭汉中植烟土壤有机质、速效氮、有效磷、速效钾和pH平均值分别为16.69 g/kg、159.31 g/kg、43.34 mg/kg、375.22 mg/kg和pH 6.21;土壤有机质含量主要属于第4级别,所占比例为34.09%,速效氮主要属于第2级别,所占比例为46.59%,土壤有效磷、速效钾和pH主要属于第1级别,所占比例分别为38.64%、75.00%和23.86%;土壤各养分含量之间呈极显著正相关关系;从空间分布来看,土壤有机质含量和速效氮含量以南郑县和西乡县接壤地区最高,有效磷含量以宁强县和南郑县最高,速效钾含量以南郑县、宁强县和西乡县最高,pH等级以略阳县中南部、勉县南部、南郑县北部和西乡县中部最高。勉县、洋县、略阳县和西乡县土壤养分含量相对较低,南郑县和宁强县土壤养分状况相对较好,建议增施有机肥提升土壤有机碳含量,并减少化肥的施用,增强土壤固碳培肥能力。

关键词：秦岭土壤养分空间分布有机质养分特征

Application of a Step-by-Step Fingerprinting Identification Method on a Spilled Oil Accident in the Bohai Sea Area

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Journal of Ocean University of China 2011年第1期10卷 35-41页

作者： SUN peiyan GAO Zhenhui CAO Lixin WANG Xinping ZHOU Qing zhao Yuhui LI Guangmei Key Laboratory of Marine Spill Oil Identification and Damage Assessment Technology SOA Qingdao 266000 P. R. China North China Sea Environmental Monitoring Center of State Oceanic Administration Qingdao 266000 P. R. China

In recent years,oil spill accidents occur frequently in the marine area of *** out the spilled oil source is a key step in the relevant *** this paper,a step-by-step fingerprinting identification method was used in a spilled oil accident in the Bohai Sea in *** chemical fingerprinting and data interpretation techniques were used to characterize the chemical composition and determine the possible sources of two spilled oil *** original gas chromatography -flame ionization detec-tion (GC-FID) chromatogram of saturated hydrocarbons was *** gas chromatography-mass spectrometry (GC/MS) chromatograms of aromatic hydrocarbons terpane and sterane,n-alkane and poly-aromatic hydrocarbons (PAHs) were *** correlation analysis on diagnostic ratios was performed with Student’s *** is found that the oil fingerprinting of the spilled oil (designated as sz1) from the polluted sand beach was identical with the suspected oil (designated as ky1) from a nearby crude oil refinery *** both showed the fingerprinting character of mixed *** oil fingerprinting of the spilled oil (designated as ms1) collected from the port was significantly different from oil ky1 and oil sz1 and was with a lubricating oil fingerprint *** identification result not only gave support for the spilled oil investigation,but also served as an example for studying spilled oil accidents.

关键词： step-by-step fingerprinting identification saturated hydrocarbons poly-aromatic hydrocarbons biomarkers Student'st-test

DWI、DCE联合APT成像在鉴别乳腺良恶性病变中的价值研究

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中国医疗设备 2024年第6期39卷 124-130,155页

作者：赵傲武新英付彤王培炎李可申璐璐林海刘林栋南京医科大学附属南京医院(南京市第一医院)医学影像科江苏南京210006 上海联影中央研究院上海201800

目的对比磁共振酰胺质子转移(Amide Proton Transfer,APT)成像、扩散加权成像(Diffusion Weighted Imaging,DWI)和动态增强(Dynamic Contrast-Enhanced,DCE)成像以及3者联合应用在鉴别乳腺良恶性病变中的诊断价值。方法纳入55例乳腺疾... 详细信息

目的对比磁共振酰胺质子转移(Amide Proton Transfer,APT)成像、扩散加权成像(Diffusion Weighted Imaging,DWI)和动态增强(Dynamic Contrast-Enhanced,DCE)成像以及3者联合应用在鉴别乳腺良恶性病变中的诊断价值。方法纳入55例乳腺疾病患者,均进行APT、DWI以及DCE扫描,测量非对称磁化转移(Magnetization Transfer Asymmetry,MTRasym)率和表观扩散系数(Apparent Diffusion Coefficient,ADC)值,并记录乳腺影像报告和数据系统的分类。分析乳腺良恶性病变各参数之间的差异,使用Logistic回归建立联合诊断模型,采用受试者工作特征曲线(Receive Operating Characteristic,ROC)计算各诊断模型在乳腺良恶性病变中的诊断价值,并比较恶性病变中不同病理因素组间的差异以及各病理因素与APT之间的相关性。结果恶性组中MTRasym和ADC值均小于良性组,差异具有统计学意义(均P<0.05),DWI、APT、DCE以及APT+DCE、APT+DWI、DCE+DWI、DWI+APT+DCE联合模型鉴别乳腺良恶性病变的曲线下面积(Area Under Curve,AUC)分别为0.804、0.723、0.741以及0.782、0.895、0.897、0.970;DWI+APT+DCE联合诊断模型的AUC显著大于DWI、APT、DCE以及任意两者联合诊断模型(均P<0.05)。Ki-67高表达组的MTRasym值较低表达组高[(3.934%±0.883%)v s.(3.192%±0.949%)],乳腺癌浸润程度组织学分级Ⅲ级组的M T R a s y m值较Ⅱ级组高[(4.225%±0.932%)vs.(3.451%±0.873%)],差异均有统计学意义(均P<0.05),并且APT与两者均呈中度正相关(r=0.627、0.537,均P<0.05)。结论APT成像技术在乳腺良恶性病变的鉴别中具有较好的诊断价值,与常规DWI、DCE成像无显著差异,并且三者联合应用的诊断价值更高。

关键词：乳腺良恶性病变酰胺质子转移成像扩散加权成像动态对比增强磁共振成像

Deep eutectic solvent-based gel electrolytes for flexible electrochromic devices with excellent high/low temperature durability

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InfoMat 2023年第2期5卷 11-21页

作者： peiyan Sun Jian Chen Yaowu Li Xueqing Tang Hongzhao Sun Ge Song Xinyang Mu Taoyang Zhang Xiuling Zha Feifan Li Yanfeng Gao Shan Cong Zhigang zhao School of Materials Science and Engineering Shanghai UniversityShanghaiPeople's Republic of China Key Lab of Nanodevices and Applications Suzhou Institute of Nano-Tech and Nano-BionicsChinese Academy of SciencesSuzhouChina

With the increasing interest in the application of electrochromism to flexible and wearable electronics in recent years,flexible electrochromic devices(ECDs)that can function at extreme temperatures are ***,the functionalities of flexible ECDs are severely hampered by the inadequate choice of electrolytes,which might ultimately result in performance fading during low-and high-temperature ***,we develop a deep eutectic solvent(DES)-based gel electrolyte that can maintain its optical,electrical,and mechanical properties over a wide range of temperatures(-40 to 150℃),exhibiting an extremely high visible-range transmittance over 90%,ion conductivity of 0.63 mS cm^(-1),and fracture strain exceeding 2000%.Owing to the excellent processability of the DES-based electrolytes,provided by dynamic interactions such as the lithium and hydrogen bonding between the DES and polymer matrix,a directly written patterning in ECDs is realized for the first *** fabricated ECDs exhibit an excellent electrochromic behavior superior to the behavior of the ECDs fabricated with traditional gel *** introduction of such DES-based electrolytes is expected to pave the way for a widespread application of electrochromic products.

关键词： deep eutectic solvent direct writing electrolyte flexible electrochromic devices temperature durability

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蜂蜜中链霉素仿生印迹电化学传感检测方法

食品与发酵工业 2024年第16期50卷 285-292页

作者：李兆周赵明辉张冉陈秀金王耀万宁波牛华伟高红丽李芳于慧春袁云霞吴影李佩艳河南科技大学食品与生物工程学院河南洛阳471000 河南省食品绿色加工与质量安全控制国际联合实验室河南洛阳471000 食品加工与安全国家级实验教学示范中心河南洛阳471000

动物源食品中链霉素残留危害严重,建立高性能分析方法是确保食品安全和人类健康的必要手段。仿生印迹电化学传感检测方法具有高效、特异和灵敏等优点,已成为食品安全检测技术研究的重要领域。该研究以链霉素为模板分子,氧化石墨烯和壳... 详细信息

动物源食品中链霉素残留危害严重,建立高性能分析方法是确保食品安全和人类健康的必要手段。仿生印迹电化学传感检测方法具有高效、特异和灵敏等优点,已成为食品安全检测技术研究的重要领域。该研究以链霉素为模板分子,氧化石墨烯和壳聚糖为增敏材料,3-氨基苯基硼酸和邻苯二胺为复合功能单体,采用电聚合法构建了仿生印迹聚合物传感界面,建立了蜂蜜中链霉素的仿生印迹电化学传感检测方法。通过扫描电镜对印迹传感界面进行了表征,采用循环伏安法、差分脉冲伏安法和电化学交流阻抗法对仿生印迹传感器的电化学性能进行表征。在最佳反应条件下,该传感器的检测限为2.59×10^(-12) mol/L,线性范围为1.0×10^(-10)~1.0×10^(-6) mol/L,洋槐蜜、枣花蜜和桂花蜜样品的加标回收率分别为94.78%~106.24%、93.65%~103.81%和97.19%~106.18%,相对标准偏差≤4.28%。试验结果表明,该方法具有良好的重复性、稳定性和重现性,能够满足蜂蜜中链霉素残留分析的需要。相关研究为复杂基质中痕量靶标的高特异性和超灵敏分析提供了技术支撑,对于蜂蜜中链霉素的快速筛查和安全监测具有重要意义。

关键词：蜂蜜链霉素仿生印迹电化学传感器

ITO/Cu multilayer electrodes for high-brightness electrochromic displays

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eScience 2022年第6期2卷 632-638页

作者： Xueqing Tang Zishou Hu Zhen Wang Jian Chen Xinyang Mu Ge Song peiyan Sun Zhengji Wen Jiaming Hao Shan Cong Zhigang zhao School of Nano-Tech and Nano-Bionics University of Science and Technology of Chin1Hefei 230000China Key Laboratory of Multifunctional Nanomaterials and Smart Systems Chinese Academy of Sciences(CAS)Suzhou 215123China Key Lab of Nanodevices and Applications Suzhou Institute of Nano-Tech and Nano-BionicsChinese Academy of SciencesSuzhou 215123China Division of Nanomaterials Suzhou Institute of Nano-Tech and Nano-BionicsChinese Academy of SciencesNanchang 330200China State Key Laboratory of Infrared Physics Shanghai Institute of Technical PhysicsChinese Academy of SciencesShanghai 200083China

Fabry-Perot(F-P)nanocavity-type electrochromic devices with multicolor tunability have attracted significant interest in the past two years for their potential uses in a wide variety of applications,such as electronic display,military camouflage,and dynamic ***,challenges such as insufficient brightness,lengthy switching times,and poor cycling stability have yet to be ***,we demonstrate electrochromic electrodes based on ITO/Cu as both the current collector and the reflective layer,with WO_(3 )as the electrochromic material,forming a unique three-layered *** constituted WO_(3 )/ITO/Cu films present a high brightness value of about 84%before coloration,and a decent brightness value of 48%after coloration at−0.8***,a fast switching time between different coloration states(tc=2.2s;tb=1s)is recorded,attributed to the extremely low sheet resistivity of the ITO/Cu current *** films also reveal excellent electrochemical cycling stability across 2000 cycles.

关键词： Electrochromic High brightness Tungsten trioxide Copper