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C50泵送混凝土在桥梁工程中的配合比设计研究
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作者 陈军法 《建筑机械》 2023年第6期142-146,共5页
针对桥梁工程中泵送混凝土易出现的堵管、强度不足、凝结异常等问题,本文围绕材料的力学性能、坍落度、耐久性展开C50泵送混凝土的配合比设计及优化研究。研究结果表明,水泥用量与砂率的过度增加,均会造成C50泵送混凝土的黏度增加,降低... 针对桥梁工程中泵送混凝土易出现的堵管、强度不足、凝结异常等问题,本文围绕材料的力学性能、坍落度、耐久性展开C50泵送混凝土的配合比设计及优化研究。研究结果表明,水泥用量与砂率的过度增加,均会造成C50泵送混凝土的黏度增加,降低混凝土的施工和易性;使用粉煤灰作为矿物掺合料提升材料的保水性能,减水剂最优掺配比例为1.2%,经过试验,考虑工程实际状况与工程造价,最终优选配合比为W/B=0.31,水泥∶粉煤灰∶水∶砂∶碎石∶减水剂=485∶25∶158∶695∶1087∶6.12,并进行耐久性试验与氯离子含量计算,均满足材料设计要求,可为同类工程C50泵送混凝土的配合比设计提供一定的指导。 展开更多
关键词 C50泵送混凝土 桥梁工程 配合比设计
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Effect of Chinese Medicine Treatment Based on Pattern Identification on Cellular Immunophenotype of Myelodysplastic Syndrome 被引量:6
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作者 ZHANG Yu QIAN Li-li +5 位作者 SHEN Jian-ping chen jun-fa GAO Yan-ting XIANG Jing-jing YE Bao-dong ZHOU Yu-hong 《Chinese Journal of Integrative Medicine》 SCIE CAS CSCD 2017年第6期469-473,共5页
Objective: To observe the influence of treatment based on Chinese medicine pattem identification on cellular immunophenotype of the myelodysplastic syndrome (MDS). Methods: Sixty patients with MDS were randomly an... Objective: To observe the influence of treatment based on Chinese medicine pattem identification on cellular immunophenotype of the myelodysplastic syndrome (MDS). Methods: Sixty patients with MDS were randomly and equally assigned to the treatment group and the control group using a randomized digital table. Thirty patients in each group included 3 risk levels (low, moderate and high risks) with each level 10 patients according to the international prognostic scoring system. The control group was given conventional therapy which was also used in the treatment group. While the treatment group was given Zuogui Pill (左归丸) and Yougui Pill (右归丸) for low risk patients; Qingwen Baidu Decoction (清瘟败毒饮) and Bazhen Decoction (八珍汤) for moderate risk patients; Gexia Zhuyu Decoction (膈下逐瘀汤) and Qinghao Biejia Decoction (青蒿鳖甲汤) combined with Shiquan Dabu Decoction (十全大补汤 ) for high risk patients. After the treatment, the differences of overatl response rate and immunophenotype (CD13, CD14, CD15, CD33 and CD34) of each group were analyzed. Results: The overall response rate of the treatment group was significantly higher than the control group in low risk and moderate risk patients (P=0.029), there was no statistical differences of overall response rate between the treatment group and the control group in high risk patients (P=0.089). The expressions of CD13, CD14, CD33 and CD34 in all three risk levels of the treatment group were obviously decreased after the treatment, while CD15 in all three risk levels of the treatment group was obviously increased after the treatment (P〈0.05 or P〈0.01). Meanwhile, the difference values of CD13 and CD33 in low risk level of the treatment group, CD33 and CD34 in moderate risk level of the treatment group as well as CD34 and CD15 in high risk level of the treatment group, were all greater than the control groups and they were statistically significant (P〈0.05 or P〈0.01). Conclusions: It shows a better therapeutic effect if the MDS patients treated with Chinese medicine pattern identification in addition to conventional therapy. Since the treatment may inhibit the malignant clones and improve the dysmaturity of granulocyte differentiation, it is a feasible option in clinical practice. 展开更多
关键词 myelodysplastic syndrome Chinese medicine pattern identification IMMUNOPHENOTYPE
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