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So far this method has been successfully applied to HPLC analysis of simple monosaccharides. A baseline separation of five monosaccharides was obtained under optimized isocratic condition. Both UV detector and electrospray ionization-Mass spectrometry were selected to determine the monosaccharide composition in real samples.

结合建立的衍生化方法与高效液相色谱HPLC,优化分离条件,并选择紫外和电喷雾—离子阱质谱两种检测模式对实际样品中所含的单糖进行分离分析,建立了5种单糖的常规定性定量方法。

By using an uncoated silica capillary(75um I.D,60cm of total length,and 50cm of efficient length)and 75mmol/L borax(pH 10.5)as carrier electrolyte,the derivatized isomaltooligosaccharides with a-naphymethamine,including isomaltose,panose,isomaltotriose,were sufficiently separated at the qualification of an applied voltage of 15kV and aUV detection wave-length of 214nm.

在未涂渍的石英毛细管中,以75mmol/L硼砂(pH 10.5)为运行缓冲液,在检测波长214nm、分离电压15kV下对低聚异麦芽糖主要组分的α-萘胺衍生物进行快速地分离测定。

Three flavonoids compounds: kaempferol *!, quercetin *, and isoquercitrin *# were isolated from the leaves of Cyclocarya paliurus Batal.

采用溶剂萃取及多种色谱技术分离纯化,根据理化性质和光谱分析方法鉴定其结构,确定从青钱柳中分离得到山柰酚、槲皮素和异槲皮苷 3个黄酮单体化合物,并用反相高效液相色谱法对其含量进行了测定,测得各自在甲醇和水提取物中的含量:山柰酚 0 。

Direct separation of lead and antimony from jamesonite by oxidizing volatilization roasting, with addition of one kind of catalyst; in addition, it discusses separately the factors that affect lead and antimony separation results under such process.

本试验研究了一种新工艺,通过加入一种催化剂,对脆硫铅锑矿进行氧化挥发焙烧,实现铅锑的一步分离;同时,对该工艺下影响脆硫铅锑矿铅锑分离效果的因素也分别进行了讨论。

A comparison study of constituents of the absolute extracted from flower of Jasminum sambac by supercritical CO 2 and petroleum ether was made using GC and GC MS.

利用 GC和 GC- MS联用仪对超临界 CO2 萃取茉莉浸膏的净油进行化学成分分析,分离出 131个组分,鉴定出其中的 35个化合物,所鉴定的成分占分离成分的 85%以上。

Results:From the extraction of 95% in the green peel of Juglans Mandshurica,we got five compounds,which were respectively:β-sitosterol;juglone;3,5-dimethoxy-4-hydroxybenzoic acid;regiolon;succinic acid 4-oxyethyl-5-hydroxide-β-tetralone;...

结果:从核桃楸的乙醇提取物中分离鉴定了5个化合物,分别是:β-谷甾醇;胡桃醌;3, 5-二甲氧基-4-羟基苯甲酸;regiolon;琥珀酸;4-乙氧基-5-羟基-β-四氢萘酮;胡桃酮。结论:化合物Ⅲ、Ⅶ、Ⅵ为首次从核桃楸青皮中分离得到,Ⅶ、Ⅵ为新的天然化合物。

RESULTS Kaempferol, quercetin and impurities were separated.

结果 槲皮素,山柰酚与相邻杂质能很好分离,其分离度分别为1.96和5.32,理论塔板数以槲皮素峰和山柰酚峰计算,分别为5121和6673;在5~100mg·L^-1内峰面积与其浓度均呈良好的线性关系(r=0.9994,0.9996),样品回收率分别为97.58%和105.67%;两成分含量以湖南张家界的最高而湖北赤壁最低。

By using the kernel function, the input space is mapped to a high dimension feature space where the data are expected to be more separable, the initial centroids in the feature space are selected by applying the KRA algorithm, and the large and small clusters are partitioned and the outliers can be split from the large clusters iteratively after the kk-means clustering. As a result, the audit data can be clustered better. Secondly, the closed sequential patterns mining algorithm CloSpan is improved according to the restrictions that is composed of the axis properties and reference properties.

该方法通过核函数把数据样本空间映射到一个高维的特征空间,使数据在新的空间中具有更好的可分离性;在特征空间采用KRA算法选取初始聚类中心,然后在核k-means聚类的基础上,划分出大簇小簇并在大簇中分离出异类再次进行核聚类,从而不断地优化聚类结果。

With two methods, plate cultivation and the novel semi-solid in situ cultivation method, strains belong to Family Leptothrix were isolated. XRF showed that the amorphous iron and manganese were two major metal elements of the precipitation formed by one strain of Leptothrix spp..

研究发现,铁细菌2号培养基为合适的分离培养基;采用平板涂布法分离出的2株氧化铁和锰的细菌,经系统发育地位的分析确定为纤发菌属;对运动纤发菌的产物分析确定无定形铁和锰为其主要金属元素;形态观察确定霍氏纤发菌呈树枝状鞘结构,而运动纤发菌呈蛛网状鞘结构。

Objective: To study the source of the separation of our hospitals to methicillin-resistant Staphylococcus aureus in molecular epidemiology of the characteristics, identify MRSA clinical isolates in our country, investigate the distribution characteristics of staphylococcal chromosomal cassette mec typing of MRSA and detect the Panton-Valentine leukocidin virulence gene of MRSA.

目的:研究我国医院来源分离到的耐甲氧西林金黄色葡萄球菌的分子流行病学特征,鉴定我国临床分离的MRSA,分析MRSA葡萄球菌染色体mec盒基因型,检测MRSA的PVL毒力基因。

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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。

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