Synthesis of magnetic nanocomposite microparticles for binding of chlorinated organics in contaminated water sources

In this work, the development of novel magnetic nanocomposite microparticles (MNMs) via free radical polymerization for their application in the remediation of contaminated water is presented. Acrylated plant-based polyphenols, curcumin multiacrylate (CMA) and quercetin multiacrylate (QMA), were incorporated as functional monomers to create high affinity binding sites for the capture of polychlorinated biphenyls (PCBs), as a model pollutant. The MNMs were characterized by Fourier transform infrared spectroscopy, thermogravimetric analysis, scanning electron microscopy, dynamic light scattering, and UV–visible spectroscopy. The affinity of these novel materials for PCB 126 was evaluated and fitted to the nonlinear Langmuir model to determine binding affinities (K_D). The results suggest the presence of the polyphenolic moieties enhances the binding affinity for PCB 126, with K_D values comparable to that of antibodies. This demonstrates that these nanocomposite materials have promising potential as environmental remediation adsorbents for harmful contaminants.     

新城市科学背景下的城市设计新可能

本文面对智慧城市和新城市科学 迅速发展的背景，立足新时期城市设计转型 需求，针对新近涌现出的以机器学习、虚拟 现实、计算机可视化等为代表的多种新技术 和以街景数据、兴趣点数据、位置服务数据 等为代表的多源城市数据开展讨论。继而对 其所带来的城市设计新可能进行了探讨和展 望，并对于相关典型工具和代表性案例进行 了介绍。这些伴随新城市科学涌现的数据和 技术不仅能够为城市设计在场地分析、设计 开展和方案评估上带来工作方式的革新，而 且有望进一步明确城市设计的专属技术体 系，并以此推动城市设计的领域构建。     

Dynamische Verformungsmessungen an Eisenbahnbrücken mittels Mikrowelleninterferometrie

Dynamic measurements of railway bridge displacements through microwave interferometry – Part 1: measurement method The microwave interferometry is a rather new measuring technique, yet little‐known in civil engineering applications. It allows the non‐contact acquisition of structural displacements with accuracy in the sub‐millimetre range at a sampling rate of up to 4 kHz. The high sampling frequency allows also the caption of dynamic structural responses, which can be used for a straightforward determination of the main modal parameters of the structures (natural frequencies, damping ratios). Furthermore, the synchronous acquisition of the overall motion of the targeted object is possible due to a high range resolution, which facilitates a direct identification of modal shapes. This paper gives a short introduction of the measurement method and outlines its boundary conditions and limitations with respect to applications in railway bridge dynamics. The knowledge has been gained on the basis of comprehensive systematic experimental investigations performed within the frame of a cooperation project with the German Railways (Deutsche Bahn AG). As a result an evaluation matrix was created, which clearly illustrates the applicability of the microwave interferometry for different railway‐specific tasks. The second part will present selected results of microwave interferometry measurements of railway bridges in comparison to parallel conventional measurements and the corresponding numerical investigations, which were used for the validation of the measurement technique.     

Methoden zur Analyse des Bruchverhaltens hochfester Stahlfaserbetone

Methods for analyzing the fracture behavior of high‐strength steel fiber‐reinforced concretes High‐strength and ultra‐high strength fiber‐reinforced concretes are most suitable for applications with extreme mechanical loads. These extreme conditions require a ductile behavior under tensile loading, which is obtained solely by the addition of steel fibers and their working mechanism. Profound know ledge on the working mechanism of the steel fibers is necessary for optimizing this material. Usually, this knowledge is obtained by means of classical measuring techniques of destructive tests. Adopting measuring techniques from non‐destructive material testing helps to analyze and to identify the different stages of the fracture mechanism of high‐strength and ultra‐high strength fiber‐reinforced concretes in detail. The application of different non‐destructive measuring techniques is shown exemplary on tensile tests conducted on an ultra‐high strength fiber‐reinforced concrete and its applicability for analyzing the fracture behavior is discussed. The main focus is on the characterization of the relevant failure modes under tensile loading by the different measuring techniques and the comparison with classical measuring techniques (e. g. extensometer). The tensile tests have been analyzed by optical deformation measurements using digital image correlation (DIC), acoustic emission analysis (AE), and 3D computed tomography (CT).     

诺克斯事务所的非标准化建筑进程

文章通过分析荷兰诺克斯事务所在三个不同领域——研究、艺术和建筑方面的工作，力图探寻其设计技巧与方法论的关系。设计技巧从纯物理模型到类比计算再到现在的脚本编写，这种进步亦反映出科学技术进步对当代建筑设计的影响。     

德国新型建筑节能理念与应用

介绍了德国当前的建筑节能理念和实际技术的应用,并针对中国目前情况提出建筑生态节能设计系统的概念及其重要组成部分;建筑整体的能量平衡系统设计;优秀的建筑构造系统设计和正确地选用建筑材料和技术设备系统。     

向太阳索取,为人类造福--全国首届太阳能建筑设计竞赛综述

本文试图通过对全国首届太阳能建筑设计竞赛获奖作品创意的品味,描述太阳能建筑的理念及其技术,以期获得更多对于建筑行业和太阳能行业发展的关注.     

建筑的"光合"--2004年国际太阳能设计竞赛回顾

方案试图通过技术手段使建筑成为像植物一样沐浴在阳光下的生命体，利用太阳能及其他能源来满足其自身运转，又不对外界环境产生污染。以此为创作出发点，通过对建筑各部分构件及室内外环境的研究与设计，营造一个综合利用太阳能、风能等多种能源，既节能环保又舒适的绿色生态建筑。     

Recent Trends,Applications, and Perspectives in 3D Shape Similarity Assessment

The recent introduction of 3D shape analysis frameworks able to quantify the deformation of a shape into another in terms of the variation of real functions yields a new interpretation of the 3D shape similarity assessment and opens new perspectives. Indeed, while the classical approaches to similarity mainly quantify it as a numerical score, map‐based methods also define (dense) shape correspondences. After presenting in detail the theoretical foundations underlying these approaches, we classify them by looking at their most salient features, including the kind of structure and invariance properties they capture, as well as the distances and the output modalities according to which the similarity between shapes is assessed and returned. We also review the usage of these methods in a number of 3D shape application domains, ranging from matching and retrieval to annotation and segmentation. Finally, the most promising directions for future research developments are discussed.     

锥面共形阵列信源方位和极化参数的联合估计算法

该文用交叉电偶极子对在锥面共形载体表面构造极化敏感阵列,在建立其快拍数据模型的基础上实现了信源方位和极化参数的联合估计.算法首先通过合理的矩阵变换将阵列流形中的信源方位和极化信息“去耦合”,然后分别根据秩损理论和旋转不变子空间思想对其进行估计,最后通过一种轮换比对配对方法实现信源方位和极化参数的联合估计.Monte-C...