查询词典 silica gel

In order to elucidate the effect of minerals and humic matter on the sorption of hydrophobic organic chemicals, sorption of trichloroethylene on series humic acid modified and unmodified montmorillonite, kaolinite and silica gel was studied in this paper.

为了分别揭示矿物质、有机质在疏水性有机物吸附中的作用，文章研究了蒙脱石、高岭土、硅胶以及用腐殖酸修饰后的这3种模型吸附剂对三氯乙烯的吸附行为。

TW-600 Outside pumping vacuum packer: using air pressure style sealing, and it is clean and reliable; adopting the Japanese and Korea technology and equipment, is provided with dual functions of vacuum and charge; the whole machine circuit is from Korea and is programmable control, and is stable; sponge shape silica gel bar to ensure a fine airproof after pumping out the air; using the variable stroke air cylinder to make sure the sealing is neat and tidy; it is a perfect safe packaging after the product charge; stainless platform, and can adjust the height freely in terms of the size of the packaging goods; and also can change the work place easily for its installing truckle; simple style storage case to store the vacuum packaging bag or spare part in common use; Light touch style padding switch can be operated conveniently.

TW-600外抽式真空包装机：采用气压式封口，干净、可靠；日、韩先进的技术设备，具有真空及充气双重功能；整机电路由韩国可编程控制，性能稳定；海棉状硅胶条，确保抽气后密封良好；采用变行程气缸，使封口整洁平整；充气后产品理想的安全包装；不锈缸工作台，根据包装物的大小，任意调整高低；装有脚轮，可任意移动工作地点；简易型储物盒，存放真空包装袋或常用备件；轻触式脚踏开关，方便操作。

Unsling and wash stand the silicone tube if a long time do not need, silica gel tube should be washed with water after each use.

长时间不用应取下硅胶管洗净备用，每次使用后须用 H2O 冲洗硅胶管。

The relative contact angle of the aqueous solution on the silica gel powder has been obtained by modified Washburn method.

用改进的Washburn方法测定16-2-16水溶液在矽胶粉末表面的接触角，幷进一步讨论了16-2-16在矽胶表面的吸附引起的润湿性变化。

A novel method was established for the preparation of solid phase extractor by modified xylenol orange onto silica gel.

制备了二甲酚橙键合硅胶固相萃取剂，研究了它对常见重金属离子的分离富集行为，发现对水中痕量Hg2+有较好的选择性分离富集效果。

The exact of petroleum ether was the acaricidal active site of Eungenia caryophyllata. 3.Isolation, purification and identification of compounds with acaricidal activity in Eugenia Caryphyllata: The exact of petroleum ether was separated into 6 parts by silica gel column chromatography with gradually increasing polarity of petroleum ether: ethyl acetate. The part C was demonstrated to be the most effective part by acaricidal activity test in vitro,and the time for it to kill all experimental mites was about 20 min.

丁香杀螨活性成分的追踪分离、纯化与结构鉴定：采用硅胶柱层析法，以石油醚：乙酸乙酯溶剂系统梯度洗脱，对丁香石油醚提取物进行分离，得到A~F 等6 段混合物，离体杀螨试验发现，C 段混合物具有突出的杀螨活性，50%浓度平均15min可杀死全部供试螨虫。

All the compounds were isolated and identified from the bituminous coals for the first time, bis(2-ethylheptyl) terephthalate and 18-ethyl-17-(hexan-2\'-yl) docosanoic acid are new compounds.Further more, a Colourless Oil Liquid, a white acerate crystals containing some alkanes, a white tabular crystals consisting of some fatty acid esters and a white powder crystals in which some fatty acids exist were isolated and analysed by GC/MS for the first time.Through this research, a study method of"classification extract of bituminous coal- separation with silica-gel and gelatin column chromatographies- identification of the isolated compounds by FTIR, GC/MS, LC/MS, 1H NMR and 13C NMR analyses"was established and proved to be a practical approach toward separable and non-destructive identification of some organic compounds in bituminous coals for coal chemistry research.

本研究建立了&原煤分级萃取-硅胶与凝胶柱层析分离与纯化-GC/MS或LC/MS检测-FTIR、MS、1H NMR和13C NMR波谱解析&这一煤中有机化学成分的非破坏性分离与分析的研究方法，并验证该研究方法有效可行。

Because the product adapts electronic circuit to control it changes the design of acesodyne infusion pump for single use mechanical pump with silica gel liquid stored vesica as power and with constant limited flow device as control measure of flow rate So it makes that the product does not affect by temperature and viscosity of liquid The flow rate is more accuracy and the usage is more safety .

本产品电子集成电路控制可变注液流量，达到控制最小有效剂量，安全剂量，均匀给药的临床用药目的，该产品设计了多种参数，增加了功能的选择，使流量更加线性和平稳，不仅适合手术后止痛，更适合用于无痛分娩，化疗等临床运用。

Compounds were extracted by 90% ethanol-petroleum ether and acetoacetate, then purified by silica gel column chromatography.

采用硅胶柱层析进行分离纯化，根据理化性质和波谱学数据进行结构鉴定。

Chemiluminescent immunoassay is one of the advanced immunoassay ofnon-radioisotopic immunoassay because of its high sensitivity, wide dynamic range,high accuracy, stable labeled protein, full automation and extensive application field.CLIA using acridinium ester derivatives as chemiluminescent label has advantages oflow background, high signal-to-noise ratio, no need of catalyst and simpleluminescence system. Different aspects associating the DMAE·NHS-based CLIA were studied in thisthesis, including synthesis of acridinium ester, chemiluminescentcharacteristics of DMAE·NHS, labelling antibody or streptavidin with DMAE·NHS,two-site sandwich chemiluminescent immunoassay for TSH, two-sitesandwich chemiluminescent immunoassay involved biotin-streptavidinsystem for TSH, and competitive chemiluminescent immunoassay usingbiotin-streptavidin system for TT〓. The desired acridinium ester, DMAE·NHS, was synthesized according to thereference method with some modifications. The products were identified by IR, NMR,MS and elemental analysis. In our method, KOH was used in place of NaOH tosynthesize benzyl ester of 3,5-dimethyl-4-hydroxybenzoic acid,2',6'-dimethyl-4'-(n-succinimidyloxycarbonyl) phenyl-acridinium-9-carboxylate waspurified on a silica gel column with chloroform/ethylacetate(4:1, v/v) as eluent andfurther purified by triturating with hexane/acetone(2:1, v/v).

DMAE·NHS的合成是本论文的关键和难点，我们对文献方法进行改进：文献方法用氢氧化钠与3，5-二甲基-4-羟基苯甲酸反应制得3，5-二甲基-4-羟基苯甲酸钠，再用3，5-二甲基-4-羟基苯甲酸钠与苄氯作用制备3，5-二甲基-4-羟基苯甲酸苄酯，我们用氢氧化钾代替氢氧化钠，使合成取得成功；在合成2'，6'-二甲基-4'-苯基-吖啶-9-甲酸酯时，文献方法对粗产品进行两次硅胶柱层析纯化，第一次柱层析用氯仿／乙酸乙酯(4∶1，V∶V)作溶剂和淋洗剂，第二次柱层析用己烷／丙酮(2∶1，V∶V)作溶剂和淋洗剂，按照文献方法得到的不是所需要的化合物，我们只进行第一次柱层析纯化，然后用己烷／丙酮(2∶1，V∶V)进行研磨，过滤，洗涤，除去溶于己烷／丙酮(2∶1，V∶V)的部分，得到所需要的产品。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。