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煤矿矿井水零排放系统工程实践与优化分析 被引量:1
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作者 李敏恒 王仁雷 +3 位作者 汪庆喜 封云 艾周磐 曹荣 《绿色科技》 2025年第4期108-111,122,共5页
西北地区某大型煤矿处理规模为1900 m^(3)/h的矿井水零排放系统采用混凝澄清+化学除硬软化+RO脱盐+NF分盐+DTRO浓缩+MVR蒸发结晶工艺,产品水达到工农业回用水标准,所产结晶盐硫酸钠纯度在98.5%以上。介绍了矿井水零排放系统的工艺设计... 西北地区某大型煤矿处理规模为1900 m^(3)/h的矿井水零排放系统采用混凝澄清+化学除硬软化+RO脱盐+NF分盐+DTRO浓缩+MVR蒸发结晶工艺,产品水达到工农业回用水标准,所产结晶盐硫酸钠纯度在98.5%以上。介绍了矿井水零排放系统的工艺设计及实际运行效果。工程实践表明:该工艺系统主要指标满足设计要求,可实现矿井水零排放目标。对目前系统运行存在的例如化学软化环节药剂耗量高、高密池污泥未资源化利用、超滤装置膜污堵、纳滤装置回收率未达设计值、DTRO浓水循环能耗高、管式膜除硬效果欠佳等问题进行了分析探讨,并提出下一步优化措施。 展开更多
关键词 矿井水 零排放 化学软化 膜浓缩 MVR 蒸发结晶
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广东省高速公路设计回溯费用编制
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作者 肖梅峰 冯韵 许嘉显 《广东公路交通》 2025年第4期64-70,共7页
高速公路设计回溯是交通运输部部署的专项工作。以编制设计回溯费用参考指标为目的,针对费用标准编制需要研究的费用范围、费用组成、费用子目设置和费用指标值等问题,基于广东省交通运输厅印发的高速公路设计回溯实施方案和相关专业排... 高速公路设计回溯是交通运输部部署的专项工作。以编制设计回溯费用参考指标为目的,针对费用标准编制需要研究的费用范围、费用组成、费用子目设置和费用指标值等问题,基于广东省交通运输厅印发的高速公路设计回溯实施方案和相关专业排查工作指引,对工作主体、工作流程、各专业排查工作内容、实际投入展开研究,明确了费用编制范围、费用组成和费用子目项,通过成本法统计测算分析得出费用参考指标,为设计回溯工作提供计费依据。 展开更多
关键词 高速公路 费用标准 造价管理 设计回溯
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Analysis of the Effect of GINS4 Regarding the Proliferation and Invasion of Breast Cancer Cells
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作者 Yaxuan Liu fen yun +2 位作者 Yongfeng Jia Lin Shi Xia Liu 《Journal of Clinical and Nursing Research》 2024年第4期61-68,共8页
Objective: To analyze the role and influence of the GINS4 gene in breast cancer progression and to explore its expression in triple-negative and non-triple-negative breast cancer cell lines. Methods: Single-gene analy... Objective: To analyze the role and influence of the GINS4 gene in breast cancer progression and to explore its expression in triple-negative and non-triple-negative breast cancer cell lines. Methods: Single-gene analysis of GINS4 was performed by breast cancer RNA transcriptome data from The Cancer Genome Atlas (TCGA). Real-time quantitative polymerase chain reaction (PCR) was used to detect the expression of GINS4 in triple-negative and non-triple-negative breast cancer cell lines. The knockdown effects of GINS4 in MDA-MB-231 and MCF-7 cell lines on the proliferation and invasion of breast cancer cells were examined by cell counting kit 8 (CCK8) and Transwell assays. Results: Bioinformatics analysis showed that the expression of GINS4 in breast cancer was significantly higher than that in normal breast tissues (P > 0.05). At the same time, cell experiments confirmed that GINS4 was highly expressed in human breast cancer cell lines with normal breast cells as reference and in MDA-MB-231 and MCF-7 cell lines as reference, where the ability of proliferation and invasion of MDA-MB-231 and MCF-7 cells decreased after GINS4 knockdown. Conclusion: GINS4 is a gene associated with breast cancer malignancy, which can act as a novel tumor marker and has the potential as a new therapeutic target for breast cancer. 展开更多
关键词 Breast Cancer GINS4 PROLIFERATION Tumor marker INVASION
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