inner content
2.The passage introduces the square wave pulse electric methods,conducts transient experiments to the homemade minitype Zn-air battery,measures the ohm polarization of the battery quickly and accurately,calculates the ohm polarization inner resitance of the battery,and offers a method to decrease the ohm inner resistence. All those content is to clirect the selection of the material and technics in the battery manufacture and the high-effucuebcy methods of charge-discharge in the usury of battery.
5.The re suits showed that during storage, the WI value of lotus epidermis were decreased, but not much change in inner lotus root; Polyphenol oxidase activity and phenols content were both showed increased and then de creased; The fiber content of lotus root can affect the change of tender; Taken the factor of WI value, tender and decomposed rate into account, the quality of JN Dawolong was the best.
9.Sodium percarbonate,which contained more than 13% effective oxygen,could be prepared by reaction of 20% H 2O 2 solution and industrial grade anhydrous sodium carbonate by a one step liquid solid phase reaction,using a new type of inner stabilizer A and magnesium silicate as outer stabilizer. The content of the effective oxygen of the product was more than 14 5%,and the content was still more than 13 5% after 3 month preservation.
10.Exactly 20 μL blood was drawn from inner canthus before swimming and immediately and 20 minutes after swimming, the content of serum lactic acid (actual value was 3 times of the measured value) was determined with lactic acid meter, and then the area under the curve of serum lactic acid was calculated.
