波谱

In this article are described the forming causes and features of coiling -effect by using wave spectrums and words.

通过文字和波谱图描述了圈条效应的产生原因和特征，借助立达专家系统对机械波的分析，指出了判别圈条效应的重要性，并阐述了几种运用电子条干仪判别的方法。

In order to isolate the active compounds in ethyl acetate fraction of Psoralea corylifolia L., activity-guided isolation was performed along with chromatographic techniques. Four active compounds were isolated from ethyl acetate fraction and identified by their NMR spectral data and physical-chemical properties. They are corylin and bavachin, which showed stimulating effect on osteoblastic proliferation and differentiation, isopsoralen and psoralen exhibited activity of promoting cell differentiation in some degree.

为了追踪分离补骨脂乙酸乙酯萃取物中的活性成分，本实验采用多种色谱分离技术，以活性测试为导向，结合波谱技术及理化数据，从补骨脂乙酸乙酯萃取物中分离并鉴定了4个活性化合物的化学结构，它们是具有促进细胞增殖和分化作用的补骨脂异黄酮和补骨脂二氢黄酮，对细胞分化有一定促进作用的异补骨脂素和补骨脂素。

Metabolites, including 1 phenolic diterpene, 2 phenolic acids (rosmarinic acid and caffeic acid), 2 flavonoids (6-methoxyluteolin-7-glucoside and homoplantaginin) and 1 coumaric acid ( cis-4-glucosyloxycinnamic acid), were successfully identified from two rosemary extracts with chloroform-methanol ( v / v , 3/1) and 50% aqueous methanol on the basis of HPLC, UV, NMR and MS data.

基于高效液相色谱、紫外吸收、核磁共振波谱及质谱数据，具有代表性的6个迷迭香代谢物的结构得到了确定，它们分别为1个酚类二萜、2个酚酸、2个黄酮（6-甲氧基木樨草素-7-葡萄糖苷和高车前甙）和1个香豆酸(顺-4-香豆酸葡萄糖苷)。

1H-MRS can detect brain metabolic changes in patients with cyanosed congenital heart disease in vivo noninvasively and can detect the metabolism disorder of the energy and amino acid,so the pathophysiology of this disease can be understood.

磁共振质子波谱能无创性地观察到紫绀型先天性心脏病患儿脑代谢异常的部分产物，可揭示慢性缺氧对脑组织代谢的影响及脑损害的病理生理机制。

Objective To study the metabolic alteration in the brain of patients with cyanosed congenital heart disease by using 1H-magnetic resonance spectroscopy (1H-MRS) and discover the pathophysiology of chronic hypoxic brain,which will help to diagnose and treat this disease completely.

目的 用磁共振质子波谱(1H-MRS)方法观察紫绀型先天性心脏病的脑代谢异常。

Furthermore, seven compounds were isolated from CSPD and their chemical structures were authenticated by spectral analysis as tetrandrine, fangchinoline, tetrandrine-2′- N-β-oxide, tetrandrine-2′- N-α-oxide, dicentrine, dicentrinone, and adenine, respectively.

从粉防己专属性对照物质中分得粉防己碱、防己诺林碱、tetrandrine-2′- N-β-oxide，tetrandrine-2′- N-α-oxide，荷包牡丹碱、荷包牡丹酮和腺嘌呤等7个成分，经波谱分析鉴定了结构。

The results indicated: The pearl and its concliolin showed specific Infrared Spectroscopy and Circular Dichromism spectra.

结果显示：珍珠及其壳角蛋白具有特定的IR图谱和CD波谱。

B. Three novel dimeric dissymmetric chiral ligands and six chain binuclear Salen complexes were synthesized and characterized by FT-IR,〓HNMR, Elemental analyses, UV-vis, furthermore the CD spectra properties of the ligands and complexes were discussed in detail for the first time.

合成了三个未见报道的链式双Salen配体和六个链式双核Salen金属配合物，通过核磁共振波谱、元素分析、红外光谱、紫外-可见光谱进行了表征，并首次详讨论了手性配体及配合物的圆二色光谱性质。

Luzoniana collected from the South China sea were studied. A compound, isolated from the soft coral, was found to be a bicyclic diterpene alcohol with a rearranged dolabellane skeleton.

应用波谱和X-射线单晶衍射分析等方法确定Ⅰ为具有变形dolabellane型碳架的双环二萜醇：(3 E，5 S，7 E，11 S，12 S，14 Z)-11-甲基-15-降dolabella-3，7，14-三烯-5-醇(图1)。

Methods The constituents in the marcroporous adsorption resin 50% EtOH eluent of Drynaria fortunei were isolated by a combination of silica gel, Sephadex LH-20 and ODS chromatographies and their structures were identified by spectral methods.

利用硅胶、Sephadex LH-20、ODS柱色谱及制备型HPLC等方法进行分离纯化，根据化合物的理化性质及波谱数据鉴定结构。

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。