造价通
更新时间:2024.04.28
用高性能、低价位的温度记录仪构成的流通工程用温湿度管理系统

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随着食品工业物流供应链的发展,在食品流通领域的原料、半成品,加工品都在大力实施恒温和低温输送,主要手段是车载冷冻装置,冷藏设备和空调装置。系统管理的对象是运送车的库内温度和装载的物品的温度变化,在上述监控系统中高性能,低价位,结构紧凑的温度记录仪必不可少,可以从驾驶室中所设置的仪表液晶显示上及时了解以便出现异常状态时及时处理;也可以将记录仪中的数据返回公司后由微机来处理或通过无线手持电话进行通报,文中介绍在温湿度管理系统中所用的多种型号的温度记录仪及其各自的功能。

污水处理中温度对黑藻生长的影响(英文)

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[Objective] The research aimed to study the influence of temperature on the growth of Hydrilla verticillata in the wastewater treatment process.[Method] By using the single factor experiment design,four temperatures which were 5,15,25 and 35 ℃ were set.The growth situation of H.verticillata under the different temperatures was observed in the treatment process of domestic sewerage.[Result] H.verticillata grew luxuriantly at 35 and 25 ℃.Via the cultivation of 15 days,the plant length,branch number,root number and biomass of H.verticillata respectively increased 2.8 and 1.2 cm,7.0 and 5.9 branches,6.2 and 3.7 roots,21% and 25%,which were all significantly or extremely significant higher than that at 5 ℃.Under the cultivation condition of 15 ℃,H.verticillata grew slowly.The increment of plant length,branch number and root number were higher than that at 5 ℃,but they had no significant difference.[Conclusion] During 5-35 ℃,the higher temperature could promote the growth of H.verticillata in wastewater treatment process.

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