The importance of consistency of VRLA batteries was summarized in this paper.The effects of consistency of batteries on service life were analyzed.The reasons and solutions about consistency of the batteries were discussed,and the effects of several key points during battery assembly process on consistency were also discussed.

This article generally introduces the characteristics,ranges for use and developing trends of commonly used lead alloys for lead-acid battery grids.In consideration of environment protection,if only the process control is reasonalbe,it is possible to make high performance products of Pb-Ca-high Sn complex alloys by which Pb-Cd alloys can be replaced.

This paper analyzes and verifies charge acceptance of VRLA batteries correlated with their discharge capacities and cycle lives,and partially tests and analyzes some aspects in the design and manufacture which have influence on the charge acceptance of batteries.

Objective:To study the effects of TMP on hyperoxia-induced lung injury.Methods:160 newborn rats (2-day old, 5-10 g) were divided into 8 groups: I. 3days normal control group; II. 7days normal control group; III. 3days hyperoxia group; IV. 7days hyperoxia group; V. 3days hypemxia+TMP group; VI. 7days hyperoxia+TMP group..The newborn rats begin to be mteraperitoneally injected with TMP(30 mg/kg) after being established hyperoxia-induced lung injury model for 2days, then the rats were killed after hypemxia for 3days and 7days to exam the lung histophathological changes stained with HE and TUNEL, to detect the apoptosis index of alveolar wall cells. For paris of rats, to take broncho-alveolar lavage fluid to detect total protein and MDA levels, and to compare the conclusions with normal control group ,hypemxia group and drug group.Results:The apoptosis indexes of hypemxia groups were much higher than that in normal control groups(P<0.01). The apoptosis indexes of drug groups were much lower than that in saline groups(P<0.01). The total protein and MDA levels in BALF of hyperoxia groups were much higher than that in normal control groups(P<0.01). The total protein and MDA levels in BALF of drug groups were much lower than that insaline groups(P<0.01).Conclusion:TMP can decrease cerebrocelMar apoptosis in lung tissues with hyperoxia damage. It also can decrease total protein and MDA levels in BALF of neonatal rats lung with hypemxia damage, so TMP has prevention and cure effect on neonatal rats s lung with hyperoxia damage.