Results 21 to 30 of about 206 (82)
Gongye shui chuli循环冷却水系统普遍存在的结垢问题严重制约其运行效率与安全性。电化学水软化技术虽能有效除硬，但阴极表面结垢会导致效率下降。倒极是一种有效的脱垢方法，但频繁倒极易使尺寸稳定阳极（DSA）表面氧化物涂层还原脱落，显著缩短电极使用寿命。为解决此问题，本研究考察了一种阴极自倒极脱垢方法。该方法以铝电极和DSA阳极构建电化学系统，在软化阶段利用阴极反应产生的OH⁻与硬度离子反应以实现除硬；在脱垢阶段，则将铝电极分组并进行自倒极，通过其作为阳极时的电解产酸与自身溶解作用，协同促进垢层剥离 ...
黄一宸 +4 more
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Gongye shui chuli, 1982 蒸汽机车的炉内水质处理,以往都用NaOH、Na2CO3、Na3PO4、（NaPO3）6作为去除Ca++、Mg++的药品,烤胶或纸浆废液作为调节泥垢流动性及防止氧腐蚀的药品,由这些药品组成的软水剂,在我段给水质量的条件下,防垢效率一般都在75～80%之间,
郑金锡, 蔡文轩, 张成和
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, 2016 Elder Gongga (1903-1997), a Chinese Buddhist woman native of Beiping, played a crucial role in the transmission of Tibetan Buddhism in China and Taiwan, bridged Dharma traditions, and merged Buddhist and cultural identities; she also became an eminent nun in the history of female Buddhism for life achievements and the worship of her mummified body ...
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Gongye shui chuli, 2018 针对工业循环冷却水出现的腐蚀与结垢对管道设备的影响，从国内石化公司提取了相关的水质和工艺数据，对数据进行动态主成分分析处理后得出对水质腐蚀及结垢影响较大的6种因素，同时基于非线性自回归模型（NARX）神经网络和模糊逻辑控制方法建立腐蚀速率和黏附速率预测模型，并设计了工业循环水智能决策系统软件。该软件不仅能对水质腐蚀速率及黏附速率进行预测，还能根据预测结果给出相应的处理意见，经实际运行，缩短了运行预测周期，提高了运行效率。
冯胜, 刘明远, 冯旭
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[Profiles and differences of submucosal microbial in peri-implantitis and health implants: A cross-sectional study]. [PDF]
Beijing Da Xue Xue Bao Yi Xue Ban, 2023 Sun F +5 more
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Gongye shui chuli, 1994 对化学清洗供暖设备的几点体会鞍钢房产供暖公司设计室刘文红供暖设备运行-定时间后，会在金属表面形成水垢，在软化设备运行不正常或保养不良时更为严重。水垢的导热性极差，其导热系数仅为钢材的１／３０～１／５０，因而使受热面的传热情况恶化，造成锅炉热效率降低。
刘文红
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[Effect of Pulsating Vacuum Cleaning Sterilizer on the Cleaning Quality of Dental Handpieces]. [PDF]
Sichuan Da Xue Xue Bao Yi Xue Ban, 2023 Liu M, Xie W, Song S, Wang Y, Lu Z.
europepmc +1 more source
[Evaluation of effect of oral health intervention on children in Shaoshan area of Hunan province]. [PDF]
Beijing Da Xue Xue Bao Yi Xue Ban, 2020 Zhang ZY +5 more
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A case of precise prosthesis under the direction of target restoration space analysis after multidisciplinary combination therapy. [PDF]
Hua Xi Kou Qiang Yi Xue Za Zhi, 2022 Yang L, Qin H, Zhang J, Han X.
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Prediction model of dental caries in 12-year-old children in Sichuan Province based on machine learning. [PDF]
Hua Xi Kou Qiang Yi Xue Za Zhi, 2023 Yan X, Sun T, Lu Y, Tan X, Wang Z, Li M.
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