多层砖混房屋顶层墙体裂缝成因及其防治

本文分析了多层砖混结构房屋顶层墙体裂缝的形态及产生机理,给出了防治裂缝的一些有效措施。     

浅水位软土地基常用的挡土围护结构

结合浅水位软土地基常用的挡土围护结构类型,介绍其在施工中的应用,总结比较其适用条件和优缺点。     

结核分枝杆菌诱导抗原提呈细胞Toll样受体表达差异性研究进展

该文结核分枝杆菌感染后,抗原提呈细胞表面Toll样受体(toll-like receptors,TLR)表达差异、抗原提呈细胞的增殖、分化以及相关信号通路作一阐述.     

Role of transfusion in stem cell transplantation: a freedom-from-transfusion (FFT), cost and survival analysis

Abstract

Background: Transfusion of blood products is often necessary for patients undergoing stem cell transplantation (SCT). The need for red cell and platelet transfusion may vary significantly depending on the type of transplantation and underlying disease.

Methods: In an attempt to evaluate the need and volume of transfusions in patients undergoing SCT at University of Kansas Medical Center, the authors retrospectively evaluated the transfusion data of all patients who received SCT between 2000 and 2005.

Results: A total of 138 (90%) out of 154 patients undergoing autologous SCT and 24 (43%) out of 56 patients with allogeneic SCT exhibited total hematopoietic engraftment and freedom from transfusion (FFT). Time to achieve FFT (median; range) for RBC units for autologous SCT (12; 0–183) was significantly shorter compared with allogeneic SCT (16.5; 0–373). Number of RBC units (median; range) transfused were significantly less in patients undergoing autologous SCT (4; 0–26) compared to patients undergoing allogeneic SCT (6.5; 0–54). The median cost of transfusion was significantly higher in patients undergoing allogeneic SCT (red cell: $2,015; platelet: $4,480) compared to patients undergoing autologous SCT (red cell: $1,240; platelet: $2,520). The authors recognize that this was a retrospective single-center study and practice guidelines may vary from center to center.

Conclusion: Authors conclude that transfusion of blood products is an expensive but integral part of SCT, more so for allogeneic SCT than for patients undergoing autologous SCT. Total FFT is a desirable long-term goal of successful marrow transplantation.     

建筑幕墙工程的技术要求及质量控制

文章介绍了建筑幕墙工程的结构设计、施工要点及施工质量控制措施,并对其弊端进行了分析,提出了处理措施。     

动物对温度适应的分子生物学研究进展

动物对环境温度的适应,会使自身的细胞内转录和表达模式发成变化,以适合环境的变化,此时它会出现新的基因开放和新蛋白因子的合成,这总的来说是动物对自身的一种保护方式。本文从基因水平、蛋白质水平、细胞膜水平等三个方面综述了动物对环境温度适应的研究概况,并讨论了动物对环境温度适应的分子生物学机制以及在进化中的意义。     

生物气固体氧化物燃料电池研究进展

对近年来国内外生物气固体氧化物燃料电池发电领域的研究进行了归纳分析。在介绍生物气产生和氧离子型固体氧化物燃料电池产电原理的基础上，总结了固体氧化物燃料电池以生物质产出的生物气为燃料发电所涉及的电化学反应；介绍了国外研究者对该类发电过程进行的试验和模拟研究；同时，对生物气结合固体氧化物燃料电池的研究进展进行了分析。得出的结论为，生物气结合固体氧化物燃料电池进行产电具有重大的实际和环保意义。     

荣地水电站增机扩容工程压力钢管的结构设计

荣地水电站增机扩容工程原发电引水系统主要为总长为2663 m的隧洞，由于隧洞竖井至原钢衬段前的钢筋混凝土衬砌施工质量较差，达不到结构安全运行的要求，因此需对原发电引水系统进行加固处理，经方案比选后，采用竖井段进行埋管回填混凝土加固+下平洞内铺设明钢管的方式进行加固处理，并相应对钢管进行结构设计。     

On regulations for 5G: Micro licensing for locally operated networks

Future 5G networks aim at providing new high-quality wireless services to meet stringent and case-specific needs of various vertical sectors beyond traditional mobile broadband offerings. 5G is expected to disrupt the mobile communication business ecosystem and open the market to drastically new sharing based network operational models. 5G technical features of network slicing and small cell deployments in higher carrier frequencies will lower the investment barrier for new entrants to deploy local radio access networks and offer vertical specific services in specific areas and allow them lease the remaining required infrastructure on demand from mobile network operators (MNO) or infrastructure vendors. To realize the full vision of 5G to benefit the society and promote competition, innovation and emergence of new services when the 5G end-to-end network spans across different stakeholders administrative domains, the existing regulations governing the mobile communication business ecosystem are being refined. This paper provides a tutorial overview on how 5G innovations impact mobile communications and reviews the regulatory elements relevant to 5G development for locally deployed networks. This paper expands the recent micro licensing model for local spectrum authorization in future 5G systems and provides guidelines for the development of the key micro licensing elements. This local micro licensing model can open the mobile market by allowing different stakeholders to deploy local small cell networks with locally issued spectrum licenses ensuring pre-defined quality guarantees for the vertical sectors’ case specific needs.     

论环保型外墙涂料的施工质量控制

环保型涂料是一种性能优良、用途广泛的新型外墙涂料.文章在简要介绍环保型涂料分类的基础上,针对环保型外墙涂料的特殊性,提出适用性的施工质量控制要点.