Results 31 to 40 of about 1,801 (95)

谈谈磁处理水技术及其在热水供暖锅炉中的应用

open access: yesGongye shui chuli, 1999
论述了利用磁场处理水进行防垢除垢的工作原理,介绍了新一代水处理设备BCH型磁防垢除垢器,通过工程实例说明了磁处理水技术的应用效果,并做了经济效益分析。为磁处理水技术的进一步推广提供了理论和实践上的依据。
高阳
doaj  

水解聚马来酸酐阻垢性能的研究

open access: yesGongye shui chuli, 1996
用静态阻垢方法研究水解聚马来酸酐(简称HPMA)的阻垢性能。探讨其阻垢率与阻垢剂用量,Ca2+浓度,配制水的配比,溶液的温度和溶液的pH值之间的关系。结果表明,水解聚马来酸酐的阻垢性能好,耐高温,对溶液的pH值适用范围宽,具有广阔的应用前景。
王平, 候金平, 陈友明
doaj  

[Technical specification and consensus on routine oral health examinations for adults]. [PDF]

open access: yesHua Xi Kou Qiang Yi Xue Za Zhi
Health Promotion Professional Committee of China Association for Promotion of Health Science and Technology   +5 more
europepmc   +1 more source

Prediction model of dental caries in 12-year-old children in Sichuan Province based on machine learning. [PDF]

open access: yesHua Xi Kou Qiang Yi Xue Za Zhi, 2023
Yan X, Sun T, Lu Y, Tan X, Wang Z, Li M.
europepmc   +1 more source

[Age-Related Changes in the Oral Microbiota]. [PDF]

open access: yesSichuan Da Xue Xue Bao Yi Xue Ban
Zhou J   +8 more
europepmc   +1 more source

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