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Influence of the ordered structure of short-chain polymer molecule all-trans-β-carotene on Raman scattering cross section in liquid
,欧阳顺利,王微微,里佐威,孙成林,门志伟
中国物理 B , 2011,
Abstract: We measured the resonant Raman spectra of all-trans-β-carotene in solvents with different densities and concentrations at different temperatures. The results demonstrated that the Raman scattering cross section (RSCS) of short-chain polymer all-trans-β-carotene is extremely high in liquid. Resonance and strong coherent weakly damped CC bond vibrating properties play important roles under these conditions. Coherent weakly damped CC bond vibration strength is associated with molecular ordered structure. All-trans-β-carotene has highly ordered structure and strong coherent weakly damped CC bond vibrating properties, which lead to large RSCS in the solvent with large density and low concentration at low temperature.
Study of second-order nonlinear hyperpolarisability of all-trans-β-carotene in solutions by linear spectroscopic technique
房文汇,门志伟,孙成林,,杨光,里佐威,高淑琴,陆国会
中国物理 B , 2010,
Abstract: This paper demonstrates the second-order nonlinear hyperpolarisability $\gamma $ of all-trans-β-carotene in different solvents by linear spectroscopic technique that is based on resonance Raman scattering and UV--VIS (Ultraviolet-visible) absorption spectroscopy. Owing to the two-level model well describing the link that exists between the resonance Raman scattering and stimulated Raman scattering, the stimulated Raman polarisability α_{\rm R}$ can be calculated through the two-photon resonance system. The value of $\gamma $ of all-trans-β-carotene in carbon bisulfide solution is 6.435$\times 10^{-33}$ esu (1~esu of resistance $=8.98755\times10^{11}~\Omega$) that is close to the true value, because the solution of all-trans-β-carotene in carbon bisulfide satisfies the rigid resonance Raman scattering condition. This method is expected to be worthy of applications to measure the second-order nonlinear hyperpolarisability of a conjugate organic molecule.
表面增强拉曼散射效应无标记、无分离检测三聚氰胺
,,苏艳,徐回春,周晓东,沈爱国,胡继明
分析化学 , 2014, DOI: 10.11895/j.issn.0253-3820.131233
Abstract: 利用纳米金的表面增强拉曼效应,建立了一种快速、灵敏、无标记、无分离的检测三聚氰胺的分析方法。通过柠檬酸钠还原法制得平均粒径为30nm的纳米金溶胶,利用Au-S之间的共价键作用,将对巯基苯硼酸(4-MPBA)自组装到纳米金的表面,构建了一个三聚氰胺的检测平台。当溶液中存在三聚氰胺(MA)时,MA与4-MPBA之间存在强烈的氢键作用,使4-MPBA功能化的纳米金发生聚集。而且,MA的浓度越高,纳米金的聚集程度越大,形成的"热点"越多,4-MPBA和MA的拉曼信号越强。4-MPBA与MA的拉曼特征峰分别位于1076和715cm-1处,若以I715与I1076的比值为依据,便可以实现三聚氰胺的定性及定量的检测,线性检测范围为0.1~1.5μmol/L,检出限(LOD)为0.02μmol/L。
溶剂密度对β胡萝卜素拉曼散射截面的影响
,李东飞,李占龙,欧阳顺利,里佐威,高淑琴,周密,门志伟,王微微,杨健戈
物理学报 , 2010,
Abstract: 测量了含有9个CC共轭双键的链状多烯类生物分子β胡萝卜素在9种溶剂中的紫外—可见吸收和拉曼光谱.结果表明,β胡萝卜素C—C,CC键拉曼散射截面随溶剂体密度增加而线性增加,其机理是β胡萝卜素分子在体密度大的溶剂中受浮动干扰小,分子结构有序性高,π电子离域扩展,产生强的相干弱阻尼CC键振动,而产生大的拉曼散射截面.密度对分子拉曼散射截面影响研究还没见过报道,本文为多烯类链状分子的光散射理论研究提供了实验线索,也对多烯类链状分子性能研究及光电器件研制有参考价值.
Stimulated supercontinuum-radiation generation of carbon disulfide by all-trans-β-carotene fluorescence enhancement effect in liquid core optical fibre
门志伟,房文汇,里佐威,,高淑琴,陆国会,杨健戈,孙成林
中国物理 B , 2010,
Abstract: We demonstrate stimulated supercontinuum-radiation of carbon disulfide (CS2) influenced by biological molecules all-trans-β -carotene in liquid core optical fibre (LCOF). By virtue of the broad fluorescence characteristics and large third-order optical nonlinearities of all-{trans}-β-carotene,the high-order Stokes lines of stimulated Raman scattering (SRS) and the multi-order Stokes lines of stimulated Brillouin scattering (SBS) excitated by SRS are observed at low input-laser energies. The results indicate that the fluorescence not only enhances the SRS, but also the SBS. These Stokes lines generate the SRS--SBS supercontinuum radiation (RBSR). A flat-amplitude bandwidth of 110 nm from 515nm to 625nm is observed when a frequency-doubled Nd:YAG laser at 532nm with an energy of 0.86mJ is used. This result is expected to be useful for the multi-wavelength fibre laser.
激光诱导等离子体对水团簇受激拉曼散射的影响
贾丽华,单肖宁,,王一丁,里佐威,姜永恒,何丽桥,刘晓磊
红外与毫米波学报 , 2012,
Abstract: 利用532nm脉冲激光作用于水分子,研究其受激拉曼Stokes和anti-Stokes散射.实验表明:激光束经过聚焦后,在能量为4mJ时,水分子产生等离子体;在泵浦激光能量由5mJ增加到15mJ的过程中,水分子OH键伸缩振动的受激拉曼Stokes散射光强逐渐增大、受激谱带宽度逐渐加宽,并且受激拉曼Stokes散射中心波长呈现蓝移趋势;当能量为15mJ时,产生了OH键伸缩振动的受激拉曼anti-Stokes散射光.利用激光诱导等离子体增强水分子团簇的受激拉曼散射理论解释了以上现象,实验与理论符合的很好.
The remote supervisory solution of DaQing petrochemical inc, for the employee hospitalization insurance
大庆石化职工医疗保险的远程化管理解决方案

,李卉
计算机系统应用 , 2002,
Abstract: 本文阐述了大庆石化职工医疗保险的远程必要性、依据,从系统功能设计、系统特点及本系统所产生的社会效率和经济效益等几个方面论述了如何实现大庆石化职工保险的远程化管理。
Effect of molecule polarity on the resonance raman spectrum of caroteniod
分子极性对类胡萝卜素共振拉曼光谱的影响

Wu Yong-Ling,Liu Tian-Yuan,Sun Cheng-Lin,Qu Guan-Nan,Li Zuo-Wei,
吴咏玲
,刘天元,孙成林,,里佐威

物理学报 , 2013,
Abstract: 测量了非极性分子β胡萝卜素和极性分子角黄素, 在非极性溶剂CS2和极性溶 剂1,2二氯乙烷中243–293 K的温度范围内的共振拉曼光谱. 结果表明, 溶质和溶剂的极性对拉曼光谱影响很大. 非极性分子β胡萝卜素在非极性溶剂CS2中的拉曼散射截面最大, 线宽最窄, 而极性分子角黄素在极性溶剂1,2二氯乙烷中的拉曼散射截面最小, 线宽最大. 用溶剂效应及线性多烯分子的“相干弱阻尼电子-晶格振动”, “有效共轭长度”模型给予了解释.
部分分散控制及其在单元机组协调控制中的应用
,谭文
中国电机工程学报 , 2011,
Abstract: 针对强耦合多变量对象控制系统设计中分散控制不能满足高性能要求,而多变量先进控制算法结构复杂、较难推广的现象,研究基于扩展对象的部分分散控制器设计。设计过程首先通过结构分析法得出部分分散控制器结构,再对其对象进行非方扩展,利用非方内模法设计相应非方分散控制器并转化为部分分散控制器,最后应用扩展m交互法进行稳定性分析。将该方法应用于一500MW单元机组协调控制系统的仿真研究,结果表明:部分分散控制系统能达到与多变量协调控制系统相近的性能,并且部分分散控制结构更加简单、设计及调试方法更加容易。
l波段微波辐射计冷空定标源亮温分析
,吴季,刘浩
遥感技术与研究 , 2008,
Abstract: 欧空局smos任务的塔克拉玛干沙漠地面定标实验,采用l波段微波辐射计测量塔克拉玛干沙漠的土壤亮温。此辐射计的定标采用冷空作为低温定标源。由于冷空的情况比较复杂,在l波段,其亮温受到诸多因素的影响。根据日地关系、太阳与天线的位置关系,建立太阳辐射模型,得出了任意时刻太阳进入天线视场范围内的影响亮温值,并简要分析了月球、其它星球、中性氢原子分立谱发射和热源连续谱发射对辐射亮温的影响,为选取冷空作为低温定标源提供了理论及数据参考。
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