波谱

The result may be a microquasar that glows across the electromagnetic spectrum and produces powerful jets that expel much of the infalling matter back into the cosmos at near light speed before it can even approach the black hole's event horizon .

结果可能是形成一颗微类星体辐射出整个电磁波谱，产生猛烈的喷气，能够驱逐出大部分落入物质以光速返回宇宙，直至接近黑洞的视界。

Intrasellar malignant lymphoma developing within pituitary adenoma.

氢质子磁共振波谱在颅内肿瘤诊断中的应用。

In this dissertation, the chemical constituents of the red algae Laurencia cartilaginea and Laurencia majuscula collected from the South China Sea of the Xisha Islands were studied, and 12 compounds were isolated by combination of extraction and separation and identified by various kinds of spectrum.

本论文主要采用硅胶柱层析、RPC—18反相柱、Sephdex LH—20、薄层层析及重结晶等方法，对采自中国南海西沙群岛的软骨凹顶藻Laurencia cartilaginea和略大凹顶藻Laurencia majuscula的化学成分进行研究，共得到12种化合物，并运用各种波谱手段对得到的化合物进行了结构鉴定。

In Laurencia cartilaginea, nine compounds (compoundsl-9) have been isolated and identified from the extraction of EtOAc fraction.

从软骨凹顶藻Laurencia cartilaginea乙醇浸提液的乙酸乙酯部分分离得到8个单体化合物和一组甾醇混合物(化合物1—9)，并通过IR、~1H-NMR、~(13)C-NMR、EI-MS、GC-MS、FAB-MS、ESI等波谱技术进行鉴定。

Then mensurate their physical property and do elemental analysis ,infrared spectrum analysis to them .

依次测定了它们的物理性质，元素分析及红外光谱数据，并通过波谱数据表征了它们各自的构象，证实其确为目标产物，从而验证了此合成路线的可行性和可靠性。

By dehydrochlorination reaction the poly[(2-methoxyl-5-octyloxy)phenylene vinylene] is synthesized and the material"s structure is characterized by nuclear magnetic resonance spectroscopy, infrared absorption spectrum, ultraviolet and visible spectrophotometry. At the meantime, the fluorescence spectrum is measured and the mechanism of fluorescence occurring is analyzed. Thermal Gravimetric Analyzer"s results show that the MO-PPV"s thermal stability is fine. Also the experiment of resolvable property indicates that the MO-PPV can well dissolve in chloroform. Through analyzing the film"s surface by Metaloscope and Atomic Force Microscope, the good filming is found.

通过脱氯缩合法合成了聚(2-甲氧基-5-辛氧基)对苯乙炔，并分别用核磁共振波谱法、红外吸收光谱法、紫外-可见分光光度法等对其进行了结构表征；测量了样品的荧光光谱，分析了荧光产生的机理；热失重仪分析了材料的热稳定性，研究表明MO-PPV材料具有良好的热稳定性；溶解性实验发现材料在氯仿中溶解性较好；金相显微镜和原子力显微镜研究了薄膜的表面形貌，发现该材料的成膜性良好；材料的导电性研究表明，固体材料在掺杂下才可以表现出导电特性，而配成溶液的材料导电性因溶剂的不同而不同，并随溶解时间的长短发生变化。

This thesis investigated the influence of the structure of LHTO on thermalcracking reaction by using elemental analysis,NMR,GPC,Quinoline-lnsolubles analysis and micropolariscope .

本文利用元素分析、核磁共振波谱分析、相对分子质量分布分析、喹啉不溶物分析和偏光显微镜测试等试验方法研究了辽河稠油的组成结构特点对热转化反应过程的影响。

Based on the results of 1H-NMR, 13C-NMR, ESI-MS and UV spectra, the structures of three compounds with antitumor activity were identified as Prodigiosin、7-Hexadecenoic acid、7,10-Octadecadienoic acid, respectively; another compounds (no activity to above tumor cells)was identified as Myristic acid.

运用核磁共振（1H-NMR、13C-NMR）、质谱、紫外光谱等现代波谱技术分析，将其中3种具有抗肿瘤活性的化合物分别鉴定为灵菌红素、7-十六碳烯酸（7-Hexadecenoic acid）、7，10-十八碳二烯酸（7，10-Octadecadienoic acid）；鉴定另一种对上述肿瘤细胞无活性的化合物为肉豆蔻酸。

The present doctoral dissertation was carried out to study the chemical constituents isolated from stems of two medicinal schisandraceous plants.34 compounds were isolated from the ethanol extracts of the stems S.henryi collected in the Jiangxi province by various column chromatographies.27 of them were identified on the basis of spectral analysis.There are 18 lignans,(including 5 dibenzocyclooctadienes,6 aryltetralins,2 tetrahydrofurans,3 diarylbutanes,2 other lignans),3 flavanols,2 glyceroesters,1 naphthoquinone,1 xanthine and 2 steroids,of which 6 compounds were new compounds,and 7 compounds were isolated from this family for the first time.

采用多种色谱技术进行分离纯化，从翼梗五味子藤茎的乙醇提取物中分离到34个化合物，综合运用现代波谱学技术鉴定了27个化合物，包括木脂素类化合物18个(其中联苯环辛烯类木脂素5个，芳基四氢萘类木脂素6个，四氢呋喃类木脂素2个，二芳基丁烷类3个，其他类型木脂素2个)，黄烷醇类化合物3个，甘油酯类化合物2个，萘醌类化合物1个，黄嘌呤类化合物1个，甾体类化合物2个，其中，5个为新化合物，7个为本科首次报道。

Based on synthesis of six naphthyl substituted urea and thiourea open-chained compounds, the interaction of these compounds as host molecules with several anionic guests in molecular level were studied via absorption, fluorescence and 〓HNMR spectra.

二、在设计合成六种萘取代的脲及硫脲类多足开链化合物的基础上，利用吸收光谱、荧光光谱及〓H NMR波谱手段详细研究了该类化合物作为主体分子与不同种类阴离子客体分子间的相互作用。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。