查询词典 extraction

Their extraction properties have been studied by metal picrates liquid-liquid extraction and the results show:By using three thio-heterocyclic compounds, twelve novel derivatives of thioalkoxycalix[4]arenes on the lower rim have been synthesized and structurally characterized by 1H NMR、13C NMR、IR and MS.

本文采用三种巯基杂环化合物对杯芳烃下沿进行修饰，得到了下沿含有杂环硫烷氧基的杯芳烃系类系列衍生物，并利用~1H NMR、~(13)C NMR、IR和MS对所合成的十二个未见文献报道的新化合物进行了结构表征。

Bearing a basket full of fresh fruits, Tzu Chi volunteers visit this peripheral blood stem cells donor. Family members can rest assured, because from pre-extraction to post-extraction, volunteers are with the donors each step of the way. A traditional herbal tonic soup is even included on the menu, to improve the patients' health.

带上营养品和新鲜的水果，志工们拜访这位捐赠周边血的替代役男，而家属能够安心都是因为捐赠前到捐赠后的关怀；志工都无微不至的陪伴在侧，甚至带来炖煮的大补汤，要帮捐髓者补身体。

A primary study on extraction and antioxidant activity of Pu-er tea polysaccharide, Single factor analysis was used to optimize the extraction conditions of tea polysaccharide, and the antioxidant activity of TPS was also studied through the method of pyrogallic acid's own oxidating.

用单因素实验研究茶多糖提取工艺条件，并进一步通过连苯三酚自氧化测定所得普洱茶茶多糖的抗氧化活性。

A rapid and simple method was developed for determination of aroma c omponents of apple wine by head space solide-phase microextraction coupled to capillary gas chromatography-mass spectrometry. Four paramete rs, including fiber coatings,extraction time,concentration of salt, and extraction temperature,were optimized. 2-Octanol was used as an inter nal standard for accuracy improvement.

以顶空固相微萃取法（Head Space Solid-Phase Micro-Extractions，HS-SPME）和气相色谱质谱（Gas Chromatgraphy-Mass Spectrometry，GC-MS）联用，2-辛醇为内标，研究了萃取头、萃取时间、加盐质量浓度、萃取温度对苹果酒中香气物质萃取的影响，优化了分析条件，建立了快速测定苹果酒中香气物质的方法。

The efficiency of re-extraction using reused EDTA reached the original level of chelating extraction only for sludge B.

Fe置换螯合铜后之DTPA悬浮液可再利用於萃取A、B或C污泥中之重金属，而Fe置换螯合铜后之EDTA悬浮液则仅可再利用於萃取B污泥中之重金属，这是B污泥中重金属结合型态多为易萃出之可交换态与碳酸盐态所致。

And the phenol extraction is a propriety procedure for extraction proteins from aqueous phase. Based on the well-resolved 2-DE patterns, our protein preparation is free of interfering compounds.

使用此方法制备的蛋白质样品进行双向电泳，所得图谱背景清晰，蛋白质点分离效果良好，可有效分离蛋白质点3662个。

The oil extraction rod is connects the pumping unit and the oil pump transmission device, Through reciprocal motion extraction petroleum.

抽油杆是连接抽油机和抽油泵的传动装置，通过往复运动抽取石油。

Methods The models of tooth extraction wound were established by extracting the left and right maxillary first molares in 60 Wistar rats, and randomly divided into two groups. Right sides of teeth extraction socket were used as experimental groups,experimental group 1 was filled with 30% aloe mastic , experimental group 2 was filled with 50% aloe mastic.

60只Wistar大鼠拔除左右上颌第一磨牙，建立拔牙创动物模型，随机分为实验1和2组（30%和50%芦荟膏组，每组30只），右侧拔牙创内放入芦荟膏作为实验组，左侧常规处理作为对照组。

METHODS: Broken roots of fifteen patients dislocated into maxillary sinus during teeth extraction were removed by negative pressure drainage, irrigation of maxillary sinus and filling gauze piece into maxillary sinus through tooth extraction wound.

对在拔牙过程中断根进入上颌窦的15例患者，应用经牙槽窝吸引法经牙槽窝上颌窦冲洗法、经牙槽窝上颌窦纱条填塞法进行手术取出断根。

Methods:Liquid-liquid extraction was used to enrich and purify the samples.By studying the experimental conditions such as the extraction solvent,the derivative temperature and the derivative time,etc.

采用液液萃取法进行样品的富集和净化，通过对萃取溶剂、衍生温度、衍生时间等试验条件的筛选研究，确立了2，4-二氨基甲苯的气相色谱分析方法。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。