vacuum drier

• The so - called vacuum drying is heating & drying of the materials under vacuum conditions to which , vacuum pump is adopted for air - bleed and humidity suction thus speedy drying is reached
  真空干燥，就是将被干燥物料处于真空条件下，进行加热干燥，它是利用真空泵进行抽气抽湿，加快了干燥速度。
• Abstract : the thesis introduces drying principle ， the characteristics ， construction and control prmciple of a new developed vacuum drying furnace with the heat air by harbin song jiang electric furnace work
  文摘:本文介绍了哈尔滨松扛电炉厂新开发的真空热风干燥炉的干燥原理、性能、结构及控制原理。
• After the vacuum dry and the sphere mill , the level of agglomeration is low , the particle size is very small , spherical and the nanometer stannic dioxide powder with the aspects of good scattered nature is achieved
  经真空干燥和球磨粉碎后得到团聚程度低，粒度细小均匀，达到纳米水平并具有较好分散性的球形二氧化锡粉体。
• This model vacuum pump is widely applied in industries of metallurgical , mechanical , electronic , chemical , petroleum , medicine for vacuum metallurgy , vacuum coating , vacuum heat - treatment , vacuum drying processes etc
  该型泵广泛应用于冶金、机械、电子、化工、石油、医药等行业的真空冶炼、真空镀膜、真空热处理，真空干燥等工艺过程中。
• The influence of pipeline flow resistance on net speed of vacuum pump is analyzed in long - distance pipeline vacuum drying , the calculation method of net speed of vacuum pump is given and checked up with site experiment
  摘要分析了长输管道真空干燥中真空泵组的有效抽速受管道流阻的影响，给出了有效抽速的计算方法，并用现场实验对其进行了验证。
• Conventionally the power capacitors were manufactured the way their wound cores should be heated and dried in a vacuum drying vessel first , and the cores should be pressed into capacitor shells , then all the unfinished capacitors were put into a vacuum pressure tank for inpregnation
  摘要传统的电力电容器的生产工艺是将芯体元件卷绕后，先在真空干燥罐内进行加热和真空干燥，然后将芯体元件压装到电容器壳内，再在另一台真空压力浸渍罐内进行真空压力浸渍。
• The hwtx - i gene was chemically synthesized according to its known cdna sequence , the gene was inserted into vector ppic9k which contained aoxj promotor and the sequence of a secreting signal peptide - a - factor , the cloning ppic9k / hwtx - i was constructed and confirmed by two - step pcr and dna sequence analysis , then it was transformed into host strain gs115 , a his + muts cell line was screened and multicopy transformants were screened by various g418 concentrations , the multicopy transformant was named gh1 . gh1 was cultivated in flasks . after 6 days of induction by 0 . 5 % methanol , the supernatant was checked by 16 . 5 % tricine - sds page , which showed there was a band in the position of 3 . 5 - 6 . 1kd , then it was isolated and desalted by ultrofiltration followed by ion exchange of cm column , after reverse phase hplc of ci8 and vacuum drying , the purified rhwtx - 1 was obtained which was proved to be correct recombinant hwtx - i by tricine sds - page , maldi - tof mass spectrometry , amino acid composition analysis , the n - terminal amino acid sequence and its biological activity , the final field of the purified rhwtx - i was about 80mg / l , accounting for 23 . 6 % of it total secretory proteins
  将带有hwtx -基因的ppic9k经blgii线性化后，转化酵母宿主菌gs115原生质体后经筛选阳性克隆并经表型鉴定为his ~ + mut ~ s酵母菌，进一步用遗传毒素g418筛选多拷贝的转化菌株，命名为gh1 ；将gh1甲醇酵母菌用0 . 5的甲醇诱导表达，发酵上清经90饱和度的( nh _ 4 ) _ 2so _ 4沉淀， yw - 3 ( mwc03000 )的超滤膜超滤，再经cm阳离子交换， c _ ( 18 )反相hplc纯化得到分子量为4kd左右的组分，其中4289 . 05的组分经质谱鉴定，氨基酸组成分析和序列测定为正确的表达产物，生物学活性表明其活性为天然毒素活性70 % ，表达量为80mg / l 。