期刊文献+
共找到2篇文章
< 1 >
每页显示 20 50 100
续建改建项目结构设计探讨与实践 被引量:1
1
作者 江志峰 张四海 +4 位作者 张春雷 胡国法 赵世杰 王久生 刘波 《建筑结构》 北大核心 2023年第23期72-78,共7页
建筑项目已经开始建设或者施工完项目中的一部分后,由于开发商的变化、建筑定位的调整、市场条件的改变、建筑功能更迭等原因,导致结构设计需要进行相应的复核、调整或者修改,如何对续建改建项目进行设计,确保结构设计的安全、合理,并... 建筑项目已经开始建设或者施工完项目中的一部分后,由于开发商的变化、建筑定位的调整、市场条件的改变、建筑功能更迭等原因,导致结构设计需要进行相应的复核、调整或者修改,如何对续建改建项目进行设计,确保结构设计的安全、合理,并充分利用已经施工的条件,取得合理的经济性,值得思考和探讨。结合具体案例,对不满足最小桩间距情况下桩基承载力的折减、型钢柱与梁纵筋节点优化、坑中坑支护拉板的设置、已施工承台的利用及试桩结果的分析选用等方面给出建议供参考。 展开更多
关键词 续建改建工程 承载力折减 型钢柱节点 承台 试桩
下载PDF
An expression profile of human α-lactalbumin in the milk of transgenic mouse 被引量:3
2
作者 LIU Siguo WEI Yingyun +3 位作者 hu guofa GAO Hong LIU Sijin LAO Weide 《Science China(Life Sciences)》 SCIE CAS 2004年第3期197-202,共6页
Five female transgenic mice were produced by microinjection using a construct made up of a 7.3-kb-5′ flanking region and a 2.0-kb coding region of human a-lactalbumin, as well as a 227-bp 3′-flanking region from bov... Five female transgenic mice were produced by microinjection using a construct made up of a 7.3-kb-5′ flanking region and a 2.0-kb coding region of human a-lactalbumin, as well as a 227-bp 3′-flanking region from bovine growth hormone gene. A founder female ex-pressed human a-lactalbumin as much as 0.3 g per liter of its milk, approximately a 3-fold in-crease in the total a-lactalbumin concentration of the transgenic mouse milk. Compared with the normal mice, the expression profile of the ha-Lac transgene in the transgenics is different during the lactation, showing low level in the first 3 days and becoming increased from day 4, then gradually reaching and stabilizing at the highest level from day 13. In addition, the milk yielding volume in the transgenics tended to be higher than in normal mice, suggesting higher concen-trations of a-lactalbumin might boost more milk output. 展开更多
关键词 Α-LACTALBUMIN transgenic mice mammary gland expression.
原文传递
上一页 1 下一页 到第
使用帮助 返回顶部