Zobrazeno 1 - 10
of 1 480
pro vyhledávání: '"金属"'
Publikováno v:
Jianzhu Gangjiegou Jinzhan, Vol 26, Pp 72-79 (2024)
北京未来城学校教学楼的地上部分采用钢框架结构，并设置2道结构缝将造型奇特的教学楼分为3个部分。教学楼地下部分不设缝连为整体，采用钢筋混凝土框架结构。钢连廊跨度为33 m，采用2
Externí odkaz:
https://doaj.org/article/a398df3420114fdba5291fe815846fcb
Publikováno v:
全球能源互联网, Vol 7, Iss 1, Pp 79-91 (2024)
为实现更强的能量耗散能力，混合式高压直流断路器的耗能支路需串并联大量金属氧化物压敏电阻（metal oxide varistor，MOV），耗能支路的可靠性将直接影响混合式高压直流断路器的可靠性。
Externí odkaz:
https://doaj.org/article/d324c5456a9f4734b0981b8369184f65
Autor:
杨涛, 张兆波, 郑添屹, 彭保
Publikováno v:
大数据, Vol 10, Iss 1, Pp 185-194 (2024)
随着地下水利、水务管网对材料需求的多样性和复杂性日益加剧，通过机器学习高效便捷地设计满足个性化需求的特种材料成为人们关注的热点。传统监督学习方法均以大量数据训练建模为
Externí odkaz:
https://doaj.org/article/7466c0d7bcfd40f1b433acdf2ba4352a
Publikováno v:
Xibei Gongye Daxue Xuebao, Vol 41, Iss 4, Pp 794-801 (2023)
Metal hydride hydrogen storage has the advantages of high hydrogen storage volume density, high safety, and high hydrogen purity, which can meet the hydrogen storage and supply needs of fuel cells in both mobile and fixed scenarios. It has become one
Externí odkaz:
https://doaj.org/article/b7a86abd81064eed902acc8c844853c4
Publikováno v:
Zhongguo youzhi, Vol 48, Iss 7, Pp 39-43 (2023)
摘要：金属有机骨架（MOF）具有多样性、高比表面积、化学稳定性和易于后修饰等优势，是固定化酶的优良载体。为了促进生物柴油的发展，针对MOF固定化脂肪酶的方法及其在生物柴油生产
Externí odkaz:
https://doaj.org/article/6b8270859c844015b52a1b2d32a8f382
Publikováno v:
Zhongguo youzhi, Vol 48, Iss 7, Pp 49-55 (2023)
摘要：环氧植物油可广泛用作各种化工材料，为提高植物油环氧化催化剂钛硅分子筛TS-1的活性，采用沉淀沉积法制备了系列金属改性的TS-1催化剂（M/TS-1，M为Mn、Fe、Cu、Mg），对其进行了表
Externí odkaz:
https://doaj.org/article/59b7e149004e4cd0be99b62fd233b8c4
Autor:
张莺芳，叶民，尚羽，吴明凤
Publikováno v:
Zhongguo cuzhong zazhi, Vol 18, Iss 6, Pp 677-683 (2023)
目的 观察重度恶性大脑中动脉梗死（malignant middle cerebral artery infarction，MMCAI）患者早期血清MMP组织抑制剂（tissue inhibitor of matrix metalloproteinase，TIMP）3水平变化，确定其对患者30 d死亡的预测
Externí odkaz:
https://doaj.org/article/29673af498d94438bae711d0af1e4b61
Publikováno v:
Zhongguo youzhi, Vol 48, Iss 3, Pp 95-101 (2023)
旨在为大豆油（供注射用）的质量控制及安全评价提供参考，建立了微波消解-电感耦合等离子体质谱( ICP-MS)法测定大豆油（供注射用）中金属元素含量。将0.5 g大豆油（供注射用）加硝酸溶
Externí odkaz:
https://doaj.org/article/3f9336aa199d4989939ba7fdaeb0de25
Publikováno v:
Jianzhu Gangjiegou Jinzhan, Vol 25, Pp 102-112 (2023)
国内在高强冷弯厚壁型钢的冷作硬化效应和残余应力分布领域的研究还十分有限，基础数据匮乏。针对这一问题，对高强冷弯厚壁C形钢展开研究，对其母板及冷弯型钢构件的材性进行拉伸试
Externí odkaz:
https://doaj.org/article/970ecc57ce894486bedcc6f68423d761
Publikováno v:
Xibei Gongye Daxue Xuebao, Vol 40, Iss 6, Pp 1269-1277 (2022)
Soft metals are often used for space mechanism lubrication because of their low shear strength. In outer space, the vibration of spatial mechanism will occur when there is a small disturbance due to the effects of microgravity environment. Studies on
Externí odkaz:
https://doaj.org/article/3e49faa832424a50bb26e8457475e72e