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Economics evaluation:materials(urine glass,test tube,sipper,columnella, kieselguhr),reagent,consumption of instrument(pH meter, GC/MS,carrier gas,heating element,injector,sample injector),service charge, 80.00 yuan totally. Conclusion Compare with the other biology materials,as a study target,urine is easy to get and preserve,otherwise,it also contains several biology information.

共需3小时。经济学评价:取检材材料费(尿杯、试管、吸管、小柱)、检测试剂衍生化试剂、内标、浓盐酸、氢氧化钠、固相萃取材料(硅藻土的费用和仪器的消耗费(pH计、GC/MS、载气、加热器、注射器、微量加样器),共计八十元左右。

By synthetically analysizing the physical and chemical properties of all components and particle size, the content of F2641 in the JOB-iC is determined by gravimetric analysis after F2641 is seperated from HMX,TATB and PNP through ? alkali reflux. Determination conditions is set as follows the sample is boilingly refluxed for six hour in a constant temperature bath after adding lOOm! 8.0 ?? 0.1% NaOH. The solvent DMF saturated by TATB is used for extracting HMX,F21 and PNP from the sample and TATB is seperated by crucible filter G4. The mass precent of TATB is determined by extraction fractionation. The mass percent of PNP is measured by multiwavlength linear regression ultraviolet spectrophotometry. The testing conditions are set as follows:multiwavlength constitution: X=267nxn, 275nm, 283nm, 29mm, 299nm,the application scope of the Lambert-Beer law: the concentration of PNP is O.005?0.O25mgIml, the concentration of HMX is 0.060.3Omg/ml,absorption coefficents of PNP and HMX are solved by the slope of linear regression curve of absorbency- concentration of standard solution of PNP and HMIX for measuring wavelengthes,on the basis of the Lanibert-Beer law and absorbancy additivity principle, the slope of linear regression curve of A/E(1) and E1 of PNP and HMX solution is regarded as the concentration of PNP in the solution.

根据传爆药中各组分的物理、化学性质及主体炸药的粒度大小,进行综合分析,确定了采用碱回流重量法测定JOB-1C 中F_(2641)的含量,测定条件:加入100ml浓度为8.0±0.1%的氢氧化钠,在恒温水浴中煮沸回流6h;采用溶剂萃取法测定JOB-1C中TATB的含量,选择TATB饱和的二甲基甲酰胺为萃取溶剂,用G4坩埚式过虑器进行萃取分离;采用多波长线性回归紫外分光光度法测定JOB-1C中PNP的含量,通过实验确定了多波长组合:λ=267nm,275nm,283nm,291nm,299nm;朗波—比耳定律的适用范围为PNP浓度:0.005~0.025mg/ml,HMX浓度:0.06~0.30mg/ml;在测定波长下,对PNP、HMX标准溶液的吸光度—浓度进行线性回归,由回归曲线的斜率得出PNP、HMX的吸收系数;根据朗波—比耳定律和吸光度加和性原理,在测定波长下,对PNP、HMX 两组分混合溶液A_i/E_HMX(i与E_PNP(i/E_HMX(i进行线性回归,回归曲线的斜率即为混合溶液中PNP的浓度。

Based on membrane extraction and helical tube technique, the mass transfer performance of some membrane modules with a different helically wound hollow-fibre was studied with the system of 30%TBP-water and phenol as the solute. The effects of two phase flow rates, geometry of the membranes on mass transfer coefficients were investigated.

在对中空纤维膜萃取以及螺旋管技术进行充分调研的基础上,选择水-苯酚- 30 %TBP煤油为实验体系,溶质由水相萃取到有机相,在不同结构的单束螺旋状中空纤维膜器中研究了螺旋管纤维膜管内外流速以及螺旋管结构等因素对传质系数的影响。

A novel poly(phthalazine ether sulfone ketone, PPESK) stir bar was prepared. The method for analyzing trace level nitroaromatic explosives in aqueous samples by stir bar sorptive extraction coupled to GC through thermal desorption was developed.

制备了以聚醚砜酮为萃取相的新型固态萃取搅拌棒,建立了一种固态萃取搅拌棒/热解吸器直接热解吸/气相色谱联用分析水样品中痕量爆炸物的新方法。

The unit of IPL Purify in IPL circulation system was calculated and analyse . Feed temperature is consequential to effect of extract and vapor flux of reboil is marked to the stripper.

对无机循环系统的无机工艺液净化单元进行了工艺参数分析,定量的分析了进料温度和进料量对萃取塔萃取效果的影响,以及再沸器蒸汽流量对汽提塔分离效果的影响。

Three results are obtained by an orthogonal experiment. The main components of essential oil in separating containerⅠare terpenoid, terpeneless compound is in separating container Ⅱ. Through second-level separation the technological conditions of de-terpene are: pressure 7MPa, temperature 32℃ in separating containerⅠ;pressure 4~5MPa, temperature 32℃ in separating containerⅡ. The optimum technological parameters of obtaining two essential oils are: particle size 0.60mm, pressure 10MPa, temperature 36℃, operating time 90 minutes. There are 1.46% and 1.88% essential oil in separating containerⅠand Ⅱ respectively.

通过正交试验表明:分离器Ⅰ中精油的主要成分是萜烯烃类化合物,分离器Ⅱ中精油的主要成分是由高级醇类、醛类、酮类、酯类等组成的含氧化合物;二级分离脱萜的适宜参数是:分离器Ⅰ的压力为7MPa,分离器Ⅱ的压力与循环压力相同,温度都为32℃;同时得到萜烯烃类精油和低萜精油的最优工艺组合是粒度0.60mm,萃取压力10MPa,萃取温度36℃,萃取时间90min,精油得率分别为1.46%和1.88%。

His paper deals with the purification of tetrabromoethane by continuous countercurrent scrub-bing with annular centrfugal extractor.

研究了离心萃取器的转速和重相堰直径在四溴乙烷一水体系中对洗涤效果的影响,并得到了优化参数。

The procedure is similar to the one used for inserting intra-uterine devices.

这项处置方法与放置宫内避孕器的方法相似,医生通过子宫颈把一根小管插入子宫,然而并不是通过小管放置宫内避孕器,而是在管的一端接通真空泵,借此吸出(也就是&吸取&或&萃取&)子宫内膜(正常时以月经的形式脱落)。

This material is then transferred to a screw press where the pulp and fibre material is separated from the liquid.

然后,螺旋挤压萃取器会将原料内的浆状及纤维原料与液体分离。

The Extractor is the latest brainchild of mad genius Rob Bromley.

萃取器是最新的创意疯牛病天才抢bromley 。

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