( 4 ) the active material is small in the biomass , but it participates in almost all biochemical reaction . meanwhile the experiment shows that the activity of biofilm is lower in low temperature than in normal temperature ( 4 )生物膜中的活性物质虽然在生物膜总量中的比例很小,但是正是这些活性物质担负着所有生物化学反应进行的任务,试验表明低温时生物膜的活性较常温低很多。
Lithium manganese oxides have advantages as the positive active materials for lithium - ion batteries , such as non - toxicity , low cost etc . however , the capacity fade of lithium manganese oxides makes its application difficulty 锂锰氧化物由于具有污染低,价格便宜等优点,己经成为最有吸引力的锂离子电池的正极材料。但其容量衰减、循环寿命短等问题,成为困扰它商品化应用的主要障碍。
Before bottle , the product adopt the device of membrane separation which is to utilize nano technology reach super filtration level , the clear liquid filtered is asepsis , it protect active material and various kinds of amino acid of products not to be decreased 本品在灌装前采用的膜分离装置,是利用纳米技术达到超滤水平,它所过滤出的清液是无菌的,从而保护了产品中的活性物质和各种氨基酸不受损失;
When mechanical doping 5 % co , the discharge specific capacity is 225mah / g , the ratio of active material utilization is 78 % . the addition of zn can prevent the swelling of nickel electrode and prolong the cyclic life , decrease the existence of y - niooh when over - charged 随着co掺杂量的增加,镍电极的放电比容量明显提高,机械混合掺杂5 co时镍电极的放电比容量为225mah g ,活性物质的利用率达到78 ,循环性能比较稳定。
Active carbon could effectively inhibit the reaction products ? polysulfides dissolving into electrolyte for its strong absorbability arising from very large surface area . so li / s batteries show good cyclability with high utilization of the active materials 活性炭具有巨大的比表面积和强大的吸附能力,能够有效地阻止硫的还原产物?聚硫化合物溶解到电解质中,从整体上提高了硫电极活性物质的利用率,并改善了电池的循环性能。