分离

Based on the derived frequency representation of each frame for convolutive mixtures, a modified discrete Fourier transform is proposed for the frequency domain convolutive blind separation. MDFT serves as an optimal transform in the minimum square error sense to replace the traditional DFT.

针对频域卷积混合盲分离，依据所导出的卷积混合信号每帧的频域表示模型，提出了一种最小均方误差意义下的最优变换－修正离散傅里叶变换，用于代替频域卷积混合盲分离中常用的离散傅里叶变换。

By a method using fraction precipitation of ammonium sulphate, ion exchange, modified hydrorylapatite and gel filtration chromatography, we separated and purified two kinds of phycoerythrin(R-PE and r-PE) from Corallina officinalis . The purity standard(ratio of ODs65/OD2go) of R-PE reaches to 11, which is the highest purity comparing with the reported purity of phycoerythrin.

经盐析、离子交换层析、羟基磷灰石吸附层析和凝胶过滤层析等分离纯化方法，从珊瑚藻中分离纯化出两种藻红蛋白，其中R-PE纯度OD_(565／OD_(280)高达11左右，是目前国内外报道的藻红蛋白中纯度最高。

Methods: The olfactory nerve layer and glomerular layer was isolated from the olfactory bulb of three-day old rats, Enzyme digestion method was used to isolate cells and the cells were purified by differential adhesion method. Freshly isolated OECs were plated onto poly-L-lysine-coated tissue culture and then incubated for 2 days. The purity of OECs was identified by immunocytochemistry of NGFRp75 and S100 and Hoechst33342 counterstain method.

从新生SD大鼠(3d)嗅球中迅速分离嗅神经层和嗅颗粒层，采用酶消化法分离细胞，差速贴壁法纯化细胞，接种于多聚赖氨酸包被的培养板内培养2d，采用NGFR p75和S100蛋白双标免疫组化、以Hoechst33342复染鉴定OECs的纯度。

Methods The minimal inhibitory concentrations of 134 clincal isolates of bacteria were determined by standard agar dilution method,and miconazole nitrate cremor.

采用琼脂平皿稀释法测定2%硝酸舍他康唑软膏对134株临床分离分离致病菌的最低抑菌浓度，并与硝酸咪康唑霜进行比较。

Objective To evaluate the in vitro antifuangal activity of 2% sertaconazole nitrate ointment and miconazole nitrate cremor. Methods The minimal inhibitory concentrations of 134 clincal isolates of bacteria were determined by standard agar dilution method,and miconazole nitrate cremor.

目的 评价硝酸舍他康唑软膏的体外抗菌活性方法采用琼脂平皿稀释法测定2%硝酸舍他康唑软膏对134株临床分离分离致病菌的最低抑菌浓度，并与硝酸咪康唑霜进行比较。

In the course of establishing standard operating procedure, The temperature, time , the feasibility without decorticating and efficiency were investigated when alliinase was deactivated used a dry heating apparatus in tunnel type, but the efficiency can be achieved less than 70%, need to be improved; The reformative cribriform plate has been proved to be good in practice result in pulping enzyme-deactivated garlic without dehulling; The extraction efficiency achieved more than 90% when volumic ratio of 20% alcohol and water is 3 I 1 and 2:1 was adopted to extract alliin two times respectively; During exact filtration, the ratio of diatomite in precoating and filtration was 3% and 1% respectively, the losses of alliin adsorbed by diatomite in extraction solution were not remarkable. In the stage of alliin isolation by ion exchange resin, three simple and sensitive detected measures were successfully adopted to control the whole process; the efficiency of alliin isolation was similar to laboratory results; The alliin yield was over 50% in acidic fractions and the purity quotient of alliin achieved above 50% after drying; Furthermore, the phenomenon was found that losses of alliin were seriously affected by the temperature and time periods in concentration.

在制定中试生产标准操作规程中，考察了隧道式干热烘干机杀酶的温度、时间和效率，干热灭酶效率只能达到70%，待改进；改良的筛板使带皮打浆效果良好，证明非脱皮熟蒜打浆的可行性，减少了工序，降低了成本；提取过程中，20%酒精分别1∶3和1∶2提取2次，效率达90%以上；硅藻土板框过滤时，探索了精滤过程中提取液中预涂和过滤时硅藻土的比例分别为3%和1%，并考察硅藻土对蒜氨酸的吸附损失，滤液澄明度良好，蒜氨酸损失很少；在树脂吸附分离阶段，采用三种简便灵敏检测手段控制生产过程，分离蒜氨酸的效果与实验室一致，酸性流分中蒜氨酸收率可达50%以上，干燥后蒜氨酸纯度达50%以上；试验发现浓缩蒜氨酸洗脱液时温度和浓缩时间对蒜氨酸损失的具有很大影响。

The crocin synthesis mechanism was investigated at the molecular level by studying the genes related to crocin syntheses.

对藏红花苷合成的相关基因进行了初步分离与克隆实验研究，旨在分离与藏红花苷合成相关的特异性表达的cDNA克隆，为进一步从分子水平上研究藏红花素的合成机理奠定基础。

As to the catalytic coupling of aryl bromides, when triphenylphosphine as ligand and malononitrile as subtracts, their isolated yields were generally in 72-88%; While using cyanoacetate instead of malononitrile, the yields were in 67-84%.

当采用常见的三苯基膦为配体、对取代溴苯而言，以丙二腈为底物时，偶联产物的分离产率一般都在72-88％之间；以腈基乙酸乙酯为底物时，分离产率在67-84％之间。

The experimental results indicate that the instrument error can be more completely separated using the researched method in the paper. So, the precision measurement for the cylindricity error can be realized.

实验结果表明，本文提出的圆柱度误差分离及重构方法可以比较完整地分离出仪器误差，从而实现圆柱度误差的精密测量。

Aiming at precision measurement of cylindricity,this paper puts forward a kind of method which can sep- arate the cross- section roundness error,the radius error of different cross sections,the initial coordinates of least square centers of measured cross sections and can reconstruct the pattern of the measured cylinder,i.

本文针对圆柱度误差的精密测量，提出了一种可分离截面圆度误差、截面半径差和截面最小二乘圆心初始位置并重构出被测圆柱形貌的方法，即三点法圆柱度误差分离与重构技术。

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。