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连续刚构加劲钢桁组合结构下节点板控制与施工
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作者 路韡 顾皓玮 +2 位作者 王力 赵兵 李朝晖 《施工技术(中英文)》 2025年第12期80-84,91,共6页
为精确控制和预埋连续刚构加劲钢桁组合结构的下节点板,确保加劲钢桁各杆件能在连续刚构合龙后顺利安装,以漠谷河2号特大桥主桥为工程背景,对下节点板预埋位置和施工技术进行了研究。通过对组合结构施工控制系统的分析,确定了加劲钢桁... 为精确控制和预埋连续刚构加劲钢桁组合结构的下节点板,确保加劲钢桁各杆件能在连续刚构合龙后顺利安装,以漠谷河2号特大桥主桥为工程背景,对下节点板预埋位置和施工技术进行了研究。通过对组合结构施工控制系统的分析,确定了加劲钢桁系统的施工控制目标和关键控制数据;通过建立有限元模型,对影响关键控制数据的参数进行了分析;提出了下节点板位置的计算方法、预埋施工方法和对偏差进行控制的施工措施。结果表明,下节点板的竖向和纵向位置是关键控制指标,在理论分析时需考虑合龙顶推力、加劲梁徐变效应、不平衡自重、纵向预应力、环境温度等因素影响;在预埋时通过对穿放样、分阶段复测、精细调整等措施,保证了设置在悬挑钢架上的下节点板施工精度。 展开更多
关键词 桥梁 连续刚构 加劲钢桁 下节点板 有限元分析 预埋
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基于Ti_(3)C_(2)T_(X)纳米片的高柔性导电棉织物的制备与表征 被引量:6
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作者 张露 包丽 +4 位作者 赵兵 祁宁 黄小萃 柴文波 黄紫娟 《印染》 CAS 北大核心 2022年第5期11-15,共5页
将5 mg/mL Ti_(3)C_(2)T_(X)纳米片通过反复浸涂的方法整理到聚乙烯亚胺(PEI)改性棉织物的表面,制备了一种高柔性导电P-MXene棉织物。研究表明,Ti_(3)C_(2)T_(X)纳米片在棉织物表面均匀成膜,Ti、F、Cl三种元素被成功引入棉织物的表面。P... 将5 mg/mL Ti_(3)C_(2)T_(X)纳米片通过反复浸涂的方法整理到聚乙烯亚胺(PEI)改性棉织物的表面,制备了一种高柔性导电P-MXene棉织物。研究表明,Ti_(3)C_(2)T_(X)纳米片在棉织物表面均匀成膜,Ti、F、Cl三种元素被成功引入棉织物的表面。P-MXene棉织物经历1 000次的大角度弯折和180 min超声波处理,方阻变化不大,具有优异的柔性和耐超声水洗性能。 展开更多
关键词 导电整理 聚乙烯亚胺 MXene 柔性 棉织物
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Ultraviolet-visible and Surface-enhanced Raman Scattering Spectroscopy Studies on Ruthenium Phthalocyanine Monolayer Films Formed on Terephthalonitrile-modified Silver Substrates
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作者 LIXiao-ling XUWei-qing +4 位作者 JIAHui-ying WANGXu zhaobing LIBo-fu OZAKIYukihiro 《Chemical Research in Chinese Universities》 SCIE CAS CSCD 2004年第3期345-349,共5页
A self\|assembled monolayer film(SAM) of ruthenium phthalocyanine(RuPc) fabricated on a silver substrate premodified with an SAM of terephthalonitrile(TPN) was studied by means of surface\|enhanced Raman scattering(SE... A self\|assembled monolayer film(SAM) of ruthenium phthalocyanine(RuPc) fabricated on a silver substrate premodified with an SAM of terephthalonitrile(TPN) was studied by means of surface\|enhanced Raman scattering(SERS) and ultraviolet\|visible(UV\|Vis) spectroscopies. TPN was used as a ligand to link RuPc since it can not only modify the silver substrate but also deliver the nitrile groups protruding from the silver surface. Therefore,we can explore the relationship between the structure and the orientation of RuPc and the TPN\|modified substrate. The UV\|Vis spectra indicate a strong interaction between RuPc and TPN in the composite film. The result is further confirmed by the SERS spectra of RuPc\|TPN SAM,in which the vibrational bands arising from both the RuPc and TPN moieties appear clearly,indicating that the RuPc is successfully assembled on the TPN film. 展开更多
关键词 SELF-ASSEMBLY PHTHALOCYANINE Surface-enhanced Raman scattering
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Observation on Clinical Therapeutic Effect of Dupilumab in the Treatment of 30 Cases of Moderate to Severe Atopic Dermatitis
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作者 MAChunyan SUBin +2 位作者 zhaobing WANGLianxiang ZHOUMin 《外文科技期刊数据库(文摘版)医药卫生》 2022年第5期164-167,共4页
Objective: to analyze the clinical efficacy of dupilumab in the treatment of moderate to severe atopic dermatitis. Methods: a total of 60 patients with moderate to severe atopic dermatitis treated in Beijing Jingcheng... Objective: to analyze the clinical efficacy of dupilumab in the treatment of moderate to severe atopic dermatitis. Methods: a total of 60 patients with moderate to severe atopic dermatitis treated in Beijing Jingcheng Skin Hospital (2021.1-2021.12) were divided into observation group (dupilumab) and control group (conventional treatment). The clinical efficacy (excellent + effective), the improvement time of clinical symptoms (eczema like skin lesions, dry skin, pruritus), EASI (total score of 6, the lower the better) and NRS (total score of 10, the lower the better) were compared after treatment. Results: there were significant differences in clinical efficacy between the observation group (dupilumab) and the control group (conventional treatment) after treatment (P 0.05). There was a significant difference in the improvement time of clinical symptoms between the observation group (dupilumab) and the control group (conventional treatment) after treatment (P 0.05). Before treatment, there were no differences in EASI and NRS scores between the observation group (dupilumab) and the control group (conventional treatment) (P > 0.05), but after treatment, there were differences in EASI and NRS scores between the observation group (dupilumab) and the control group (conventional treatment) (P 0.05). Conclusion: in the treatment of patients, the use of dupilumab can improve the treatment effect, the treatment is obvious, and the symptoms of patients are more obvious, the score of pruritus is more obvious, which is conducive to improve the quality of life of patients, and is worthy of being widely used in clinical practice. 展开更多
关键词 dupilumab moderate and severe atopic dermatitis EASI NRS
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