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关键词： 公路桥梁工程   伸缩缝施工技术  

摘要： 伸缩缝施工技术作为公路桥梁工程施工最为重要的环节,由于该工程涉及范围较广,在此过程当中,需要加强各个环节之间的配合.若某一环节出现问题,那么伸缩缝整体就会产生不平整的问题,严重影响整个工程的施工质量.因此,做好公路桥梁伸缩缝施工技术的研究至关重要.

关键词： 负荷计算   负荷分级  

摘要： 节约用电是为了节约能源.电能是用途最广泛的能源之一,在低压供配电系统的设计中负荷计算是很重要的内容,所以设计人员在负荷计算和负荷分级时在满足用户使用的情况下,最大限度的合理经济的计算负荷.负荷计算结果对供电容量估算、选择供配电用电设备及安全经济性都起决定性的作用.

关键词： CENTER B-CELL   PRIMARY IMMUNE-RESPONSE   CXC CHEMOKINE RECEPTOR-5   TRANSCRIPTION FACTOR   ANTIBODY-RESPONSES   BCL6 EXPRESSION   ANTIGEN   AFFINITY   DIFFERENTIATION   SELECTION  

摘要： T follicular helper (Tfh) cells are defined by a Bcl6(+)CXCR5(hi)PD-1(hi) phenotype, but only a minor fraction of these reside in germinal centers (GCs). Here, we examined whether GC-resident and-nonresident Tfh cells share a common physiology and function. Fluorescently labeled, GC-resident Tfh cells in different mouse models were distinguished by low expression of CD90. CD90(neg/lo) GCTfh cells required antigen-specific, MHCII+ B cells to develop and stopped proliferating soon after differentiation. In contrast, nonresident, CD90(hi) Tfh (GCTfh-like) cells developed normally in the absence of MHCII+ B cells and proliferated continuously during primary responses. The TCR repertoires of both Tfh subsets overlapped initially but later diverged in association with dendritic cell-dependent proliferation of CD90(hi) GCTfh-like cells, suggestive of TCR-dependency seen also in TCR-transgenic adoptive transfer experiments. Furthermore, the transcriptomes of CD90(neg/lo) and CD90(hi) GCTfh-like cells were enriched in different functional pathways. Thus, GC resident and nonresident Tfh cells have distinct developmental requirements and activities, implying distinct functions.

关键词： Schiff base ligand   Copper(I) complex   Photophysical property   Light-absorption ability   Density functional theory   ACTIVATED DELAYED FLUORESCENCE   HETEROLEPTIC CU(I) COMPLEXES   DENSITY-FUNCTIONAL THEORY   PHOTOPHYSICAL PROPERTIES   STRUCTURAL-CHARACTERIZATION   EXCITATION-ENERGIES   LIGANDS   DESIGN   APPROXIMATION  

摘要： The three Schiff base-type Cu(I) complexes [Cu(POP)(N boolean AND N)]PF6, N boolean AND N = N,N-diphenyl-4-(6-((phenylimino) methyl)pyridin-3-yl)aniline (P1), N-((5-(4-(diphenylamino)phenyl)pyridin-2-yl)methylene)naphthalen-2-amine (P2), N-((5-(4-(diphenylamino)phenyl)pyridin-2-yl)methylene)adamantan-1-amine (P3), were prepared and characterized. The photophysical properties of these Cu(I) complexes is tuned by the addition of different substituents such as phenyl, naphthyl and adamantanyl groups into the backbone of Schiff base ligand. The resulting complexes exhibit high absorption ability in the visible region with molar extinction coefficients of up to 3 7400 M-1 cm(-1). The emissions in CH2Cl2 solution are in the range of 551-552 nm with lower quantum yields of 1.1-2.0% and short-lived excited lifetimes of 2.78-3.09 ns for all the complexes at room temperature. The photophysical properties were further explained by DFT and TDDFT methods. (c) 2021 Elsevier B.V. All rights reserved.

关键词： 住宅空间   阳台   定制家具设计  

摘要： 随着居住生活方式的改变,住宅阳台空间逐渐成为生活中的重要空间,对阳台空间定制家具进行设计研究,以推动阳台空间和阳台家具设计的进步,同时优化阳台生活方式,提高居住者的生活品质。通过对我国住宅阳台的历史变迁分析,按照景观阳台与生活阳台的分类,对阳台的功能与住宅空间之间的对应联系进行阐述。总结提出住宅阳台空间中定制家具设计的要点,并以景观阳台为例对其进行设计,从服务、休闲、绿化三方面设计相应的功能模块,以休闲娱乐、收纳储物等功能服务于阳台,为住宅阳台定制家具设计提供参考。

关键词： 伸缩缝施工技术   市政   道路桥梁   应用  

摘要： 市政道路桥梁工程在我国现代化城市化建设与社会经济发展过程中占据着十分重要的地位,伸缩缝施工作为道路桥梁工程建设中的一个关键环节,其应用效果对整个工程项目施工质量具有很大的影响,和道路桥梁工程的使用寿命及安全保障也息息相关。所以深入研究伸缩缝施工技术在市政道路桥梁施工中的应用十分必要,能够促进市政路桥整体施工技术水平的不断提升,帮助攻克市政路桥工程施工技术难题。

关键词： 建筑设计   商业综合体   优化设计   功能分区   交通线设计  

摘要： 商业综合体作为城市标志性建筑,代表城市经济、商业、文化发展水平,故优化城市商业综合体建筑设计意义重大,应结合商业运营招商计划,优化商业综合体建筑设计,为商业综合体建设奠定良好的基础,保障商业综合体建设效益。围绕现代城市商业综合体建筑设计,阐述设计原则、要点,并结合项目设计时间进行探讨。