谱

It is demonstrated that the ATR difference spectroscopy of emplastrum is in good agreement with that of pure drugs purified by supercritical fluids extraction technique.

由差谱所得到的谱图与超临界流体萃取技术制备的纯有效成分谱图基本一致。

The main enzymolytic products from the reaction of VS on torpedo acetylcholinsterase were studied by means of GC-MS.

本文用气相色谱及气相色谱-质谱联用的方法，对VS与电鳐乙酰胆碱酯酶固相酶作用后其含硫、氮部份的主要酶解产物进行了分析鉴定。

METHODS: Galanga Resurrectionlily Rhizome volatile oil was extracted by wet distillation method and determined by GC-MS , and the relative content of different constituents was determined by chromatographic peak area normalization method.

采用水蒸气蒸馏法提取山柰挥发油，用气相色谱-质谱联用技术进行测定，并用色谱峰面积归一法确定各化学成分的相对含量。

Fragmentation behavior of xanthones by tandem mass spectrometry and analysis of the constituents in four crude extracts from Halenia Elliptica D. Don Firstly, in order to find the relationship between the structural characterization and the mass spectrometric behavior, eight xanthones isolated from Halenia Elliptica D. Don and nine semi-synthetic xanthones was systematically investigated by positive and negative ion ESI-MS〓 and APCI-MS〓.

〓酮类化合物的质谱裂解规律及椭圆叶花锚活性提取物中相关成分的分析研究首先，采用正负离子两种检测模式下的ESI-MS〓和APCI-MS〓方法对从药用植物椭圆叶花锚中提取分离出来的8个〓酮类单体和9个〓酮类合成物进行了详细、深入的质谱裂解规律研究，考察了化合物结构与质谱行为之间的相关性。

Methods Column chromatography over normal phase silica gel, reversed phase silica gel, Sephadex LH-20, and recrystallization techniques were used to isolate and purify constituents from Halenia elliptica.

利用正相硅胶柱色谱、Sephadex LH-20柱色谱、反相高效液相色谱和重结晶等手段进行分离

HPLC conditions for the separation of α-acid and β-acid in hops were optimized. Besides, cohumulone and humulone + adhumulone, and colupulone and lupulone + adlupulone were quantified to determine HPLC conditions. The precision and the accuracy of HPLC were verified.

对高效液相色谱法分离酒花中α-酸和β-酸的色谱条件进行了优化，并对合葎草酮和葎草酮＋加葎草酮，以及合蛇麻酮和蛇麻酮＋加蛇麻酮进行了定量，确定了色谱条件，并对该方法的精密度和准确度进行了验证。

In recent years, although multichannels (more than 256) gamma ray spectrometer has been made overseas, field gamma ray spectrometric survey is only used to determine contents of uranium, thorium and potassium, by reason of applying gamma ray spectrometry later than developing instruments, can't obtaining full spectrum because of the problem of stabilizing gamma ray spectrometric peaks, and it is impercipient for field gamma ray spectrometry.

作者分析了国内外野外地面伽玛射线全谱测量存在的问题主要是：（1）目前国内外野外地面伽玛能谱测量中主要使用四道能谱仪，仅利用能量大于1000keV的伽玛射线，通过数个谱段的读数结果，计算铀、钍、钾的含量，而没有利用伽玛射线全谱，使80％以上的伽玛射线能谱信息摒弃未用。

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.

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。

Borneol and isoborneol, the effective constituent in Chinese Medicine Shuxinping are quantitatively analyzed by GC and GC-MS with hexahydrothymol as an internal standard.

用气相色谱法和气相色谱-质谱联用法对舒心平的有效成分龙脑及异龙脑的提取液进行测定 [1] 。

Methods Purification results were compared among the differential combination chromatography of anion and cation exchange, anion and cation exchange chromatography of both isocratic elution, and affinity chromatography.

阴、阳离子交换示差组合色谱法，以等度洗脱方法进行的阴、阳离子交换组合色谱，以及亲和色谱的纯化结果相对比。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐