By an argon flow where its condensation occurs while being cooled. The analyte containing aerosol particulates can then be quantitatively re-collected by means of intra-furnace electrostatic precipitation on the wall of a graphite tube , or by external EP on a secondary graphite boat or onto one or a set of secondaryplatforms by means of corona discharge applied to the deposition site .In comparison with other techniques, the ETV-EP sampling offers some essential advantages.

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Methods: Mesityl oxide in the air was sampled by active carbon tube and desorbed by the solvent of carbon disulfide which included 1% methanol, then separated by FFAP capillary column, and finally detected by hydrogen flame detector. The experimental study was conducted according to the requirements of Regulation of studies on the determination of toxicants in the air of workplace.

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Methods: Mesityl oxide in the air was sampled by active carbon tube and desorbed by the solvent of carbon disulfide which included 1% methanol, then separated by HP-5 capillary column,and finally detected by mass detector.

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At present, Zhao organized and the management Chinese side Enterprise has been evaluated by the Chinese five ore chemical industry import and export chamber of commerce AAA the level credit enterprise, by the Agriculture Bank of China Shanxi Province Branch, the letter bank Taiyuan Branch, the Minsheng Bank Shanxi branch is evaluated not bad record and defends the credit enterprise, is evaluated tax payment pivot man, the demonstration enterprise by Internal Revenue Service, in the customs, the outer tube aspect is prompt, the code of honor, does not have any bad record, evaluates the model enterprise by Tianjin and Dalian Customs, and after-crops "not bad records" the enterprise document; Zhao managed the foreign enterprise is evaluated the No.1 enterprise, some section of Listed enterprise produced the product was also commended US's; Zhao now in the US, Japan, Singapore, Australia, Germany and Britain has the enterprise and the staff, altogether managed 15721 professional supervisors, to buy the hand, to sell the hand and the staff member.

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The antifungal activities of these materials were investigated and build foundation to develop low poison plant antifungal products. In experiment, polyphenols were extracted by reflux ectraction method which applyed petroleum ether to degrease and methyl alcohol solvent. Phenolic hydroxyl were examined and inspected by colour-developing reaction and the content of total polyphenols was determined by UV-spectrophotometry. Screening test were performed to the antifungal activities of polyphenol extraction by the tube dilution method to the selected ten pathogenic fungus such as Dothiorella gregaria, Rhizoctonia solani, Phyllosticta pirina, and the minimal inhibitory concentration were measured. The column chromatography and thin layer chromatography were applyed to separate and analyse cortex extracts of Dracaena cochinchinensi Lour.

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METHODS:The way of inhibition of Escherichia coli,Bacillus pyocyaneus,Staphylococcus aureus by amicacine and gintamincine,the methods of the plate,the tube and U-type disk (quantitative analysis by microdose and germ MQQA) were compared in nathre.RESULTS:Minimun inhibitory concentration by MQQA was lower than that by other two methods with higher sensitivity.

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The compensator is made up with compensate pipeline, two flanges fixedly connected with the compensate pipeline and a diversion knot fixedly connected with one of the two flanges and installed in compensate pipeline. Tube wall's structure is as follows: outer layer is fibre enhanced elastomer composite material whose concrete form is fibre cloth enhanced latex mixedly weaved by non-asbestos fibre and steel wire; the second layer is anti corrosive coating wax cloth made by polytetrafluoroethylene; the third layer is thermal protective coating made by glass wool or refractory wool in block shape between two layers of glass fibre clothes; inter layer is dust layer made by glass fibre dilatants voile fabric braided after surface treatment.

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The effect of proliferation,invasion and tube formation on SGC7901 cells were detected by colone formation assay,invasion assay and tube formation assay respectively in vitro.

Maniotis AJ等發(fā)現(xiàn)具有高度侵犯性的黑色素瘤組織可以形成模擬的血管通道并稱之為血管生成擬態(tài)(vasculogenic mimicryMm一级黄色，VM)[1]激情亚洲国产另类图片在线观看AV。

Fill the piping with stuff, line to define the length and position for heating tube, daub tube, warm-up, make the role touch the piping by pressing the push-bike, heat up the piping to the necessary temperature, cut off power supply, one-off complete the process in the bending model.

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The earliest version of the CRT was invented by the German physicist Ferdinand Braun in 1897 and is also known as the Braun tube.[1] It was a cold-cathode diode, a modification of the Crookes tube with a phosphor-coated screen.

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