谱

It is found that there are no obvious corresponding signals related to the Slichter modes claimed by Smylie (1992), Smylie et al.(1993) and Courtier et al.(2000) in the product spectral density estimates. Instead, it is found that there exist 8 common significant spectral peaks in the subtidal band in the product spectral density estimates of the SCG gravity data, which may be related to some unknown global geodynamical or geophysical effects. It is very encouraging that the central periods of three peaks of them are estimated accurately as 4.93438 ±0.00186h, 4.42734 ±0.001159h and 4.09269 ±0.00082h, respectively, and in significant accordance with the eigenperiod of the Slichter modes of the solid inner core expected theoretically by Smith (1976) with only differences of 0.4%,-1.4% and 1.0%, respectively.

初步分析结果表明，在积谱密度估计中没有Smylie(1992)，Smylie等(1993)和Courtier等(2000)发现的与内核平动振荡有关的共振信号，但存在与某些未知的全球地球物理或地球动力学效应有关的8个重要的明显公共谱峰，估计了在这些谱峰附近的重力共振参数，其中三个谱峰的中心周期与Smith(1976)理论预测的固体内核Slichter模的本征周期符合得非常好，二者之间的差异分别仅为0.4％，-1.4％和1.0％。

Gingerols in ginger oleoresin were separated by AB8 macroporous adsorption resin and silica gel column chromatography. The samples were characterized by the gas chromatography-mass spectrometry method.The peak area normalization method was used to determine the relative percentage of the components and the rate of accumulation of gingerol was determined by contrasting with gingerol standard samples. The results showed that gingerols was concentrated on the 3rd and the 4th parts.

采用硅胶柱层析和AB8大孔树脂吸脱附两种方法分离姜油树脂中的姜酚，采用气相色谱-质谱(gas chromatography-mass spectrometry， GC-MS)对分离样品进行表征，用峰面积归一化法对测试样品的气相色谱-质谱结果进行分析，确定了分离样品中各组分的相对峰面积百分比。

For the protein side chain,the band at 1 368 cm-1 assigned to the "buried" tryptophan shifted to 1 365 cm-1 of the "exposed" and the relative intensity reduced 59%. The relative intensity of 635 cm-1 assigned to the gauche conformation of the C—S decrased 15% and the band at 725 cm-1 increased 58%.These indicate that the structure of the protein changed in the diabetic serum.The relative intensity at 1 449 cm-1 assigned to the lipids characteristic increased 58%.The relative intensity of the glucide characteristic at 1 331,1 099 and 740 cm-1 increased 35%,100% and 62%,respectively.

蛋白质侧链色氨酸吲哚环&埋藏式&的谱线1 368 cm-1位移到&暴露式&的1 365 cm-1，且相对强度减少了59%；侧链C—S键的扭曲构象的谱线635 cm-1相对强度减少了15%，而反式构象的谱线725 cm-1增加了58%，说明C—S键的扭曲构象部分转变为反式构象，表明糖尿病人血清中蛋白质的有序结构发生变化；类脂物特征峰1 449 cm-1相对强度增加了58%，与糖类有关的特征峰谱线1 331，1 099和740 cm-1相对强度分别增加了35%，100％和62%，从而表明糖尿病人血清中与脂类和糖蛋白有关的物质含量增加。

By electrospray ionization multistage mass spectrometry, the fragmentation pathways of ＋ and ＋ions of homocyclic peptides were studied in detail. The fragmentation pathways of ＋ ions were different from those of ＋ ions and their dissociation mechanisms were proposed, respectively.

采用电喷雾多级质谱技术，对系列均环多肽＋离子和＋离子的质谱裂解规律进行了系统研究，两种系列的离子具有不同的质谱裂解特征，分别提出了其可能的质谱裂解机制。

Serial types of important multiple-pluse NMRexperiments were analyzed: J-modulated spin-echo; polarization transfer; two-dimensional NMR spectra (NOESY,INADEQUATE,homonuclear COSY,heteronuclear COSY,SECSY,homonuclear J-resolved spectra,heteronuclear J-resolved spectra).

二维谱实验，分析了NOESY实验INADEQUATE实验、同核COSY实验、异核COSY实验、自旋回波相关谱SECSY实验、同核J分解谱实验和异核J分解谱实验(涉及质子反转门控去偶、FOCSY门控去偶和RE-FOCSY门控去偶四种实验)。

We discuss the method of emergency monitor ing in pollution accident which happened in water,air,and soil by using GC-MS,on account of emergency pollution accident happened increasedly and the appropriate analysis method hav't been provided.

鉴于国内突发污染事故的不断增多而相应监测方法尚未完善的当前状况，为充分发挥气相色谱-质谱联用在定性、定量中的优势，在讨论气相色谱-质谱联用在水体、大气、土壤三类有机污染事故中的应急监测方法，并针对不同的污染物情况提出了相关的前处理方法、条件程序。

ABSTRACT The ionic strength of mobile phase can significantly affect the peak shape of ionogenic compounds such as antibiotics in reversedphase high performance liquid chromatography. The influence may be attributed to overloading of ionogenic analytes in lower ionic strength mobile phase.

在反相高效液相色谱过程中，流动相的离子强度可显著影响可解离的化合物如抗生素的色谱峰形，原因在于流动相的离子强度较低时，色谱填料的固定相易于过载，使离子化的化合物的色谱峰形呈典型的过载特征――峰形接近直角三角形。

ABSTRACT The ionic strength of mobile phase can significantly affect the peak shape of ionogenic compounds such as antibiotics in reversedphase high performance liquid chromatography. The influence may be attributed to overloading of ionogenic analytes in lower ionic strength mobile phase. In such phase, peak becomes increasingly rightangled triangle in shape with increasing sample load together with increasing peak width and tailing.

在反相高效液相色谱过程中，流动相的离子强度可显著影响可解离的化合物如抗生素的色谱峰形，原因在于流动相的离子强度较低时，色谱填料的固定相易于过载，使离子化的化合物的色谱峰形呈典型的过载特征――峰形接近直角三角形。

ABSTRACT ionic strength of mobile phase can significantly affect the peak shape of ionogenic compounds such as antibiotics in reversedphase high performance liquid chromatography. The influence may be attributed to overloading of ionogenic analytes in lower ionic strength mobile phase. In such phase, peak becomes increasingly rightangled triangle in shape with increasing sample load together with increasing peak width and tailing.

在反相高效液相色谱过程中，流动相的离子强度可显著可解离的化合物如抗生素的色谱峰形，原因在于流动相的离子强度较低时，色谱填料的固定相易于过载，使离子化的化合物的色谱峰形呈典型的过载特征――峰形接近直角三角形。

First the spectrum-equalized seismic data is equalized by trace, then the result is analyzed with the MESE. If the resolving power of the MESE doesn't reach the precision desire, the equalized data is added with appropriate white noise, then is analyzed with the MESE. Thus the more precise spectral estimate is gotten.

首先对谱均衡后的地震数据作归一化处理，然后对处理结果作最大熵谱估计，若估计结果的谱分辨率精度不能满足要求，则先对归一化的地震记录叠加適当的白噪声，然后再作最大熵谱，这样可以得到较高的估计精度。

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。