新徽派建筑设计创作方法初探

徽州建筑作为中国三大地域文化中重要的一支——徽文化的重要组成部分,保护与传承其精髓已经成为目前众多学者致力研究的课题.本文以传承创新为宗旨,尝试探索新徽派建筑创作方法,引导新徽派建筑创作理论研究与实践创新.     

夏热冬冷地区不同墙体材料节能冬季试验研究

对利用两淮矿区固体废弃物制备的夏热冬冷地区常用的三种新型墙体材料（粉煤灰蒸压加气混凝土砌块、粉煤灰混凝土空心砌块、烧结煤矸石空心砖）与传统粘土实心砖进行了冬季同环境下的能耗评价、环境评价等技术方面的对比试验研究.结果表明,新型墙体材料节能降耗指标均优于传统粘土实心砖,其中粉煤灰蒸压加气混凝土砌块相对较好.     

环 上线性码的对称重量计数器

定义了环 （其中, ）上线性码的对称重量计数器的概念,利用离散的Hadamard变换,确定了该环上线性码与其对偶码之间关于对称重量计数器的MacWilliams恒等式．最后,利用对称重量计数器,进一步建立了环 上线性码关于Hamming重量计数器和Lee重量计数器的MacWilliams恒等式．     

钢筋混凝土框架结构Pushover抗震性能分析

运用SAP2000Pushover对框架混凝土结构抗震性能进行了分析,得到了框架混凝土结构在多遇、罕遇条件下底部总剪力-顶点位移曲线、抗震性能点及层间位移角和塑性铰的分布结果,并对结果进行了分析与性能评价,基于上述分析结果,找出了结构在罕遇条件下结构的薄弱环节,且使结构满足"强柱弱梁"和"大震不倒"的抗震设防要求,可为此类结构的抗震分析与设计提供参考。     

The effect of wood biomass blending with pulverized coal on combustion characteristics under oxy-fuel condition

In this study, combustion from the co-firing of coal and wood biomass, and thermal characteristics such as ignition temperature, burn-out temperature, and activation energy were discussed using a thermogravimetric analyzer (TGA). We investigated the effects of biomass blending with two kinds of pulverized coal (bituminous Shenhua, and sub-bituminous Adaro) under air and oxy-fuel conditions. The coal fraction in the blended samples was set to 1, 0.8, and 0.5. The oxygen fraction in the oxidant was set to 0.21, 0.3, 0.5, and 0.8. The ignition temperature was governed by the fuel composition, particularly in the blended biomass which has a much higher content of volatile matter comparing to coal. However, the burnout temperature, which shows a strong relationship with char combustion, depended on the oxidant ingredients rather than on the fuel components. Thermal characteristics such as ignition, burnout temperature, reaction region, and heat flow were very similar between air and a 0.3 oxygen concentration under oxy-fuel conditions with Shenhua coal.     

High performance black-to-transmissive electrochromic device with panchromatic absorption based on TiO2-supported viologen and triphenylamine derivatives

A novel black-to-transmissive electrochromic device based on TiO₂-supported viologen and triphenylamine derivatives was designed and constructed via the absorption-complementary approach. In the device, cathodically coloring electrochromic material 1,4-bis[((N-phosphono-2-ethyl)-4,4′-bipyridinium)-methyl]-benzene tetrachloride acted as working electrode and novel anodically coloring electrochromic material (4-((4-(dimethylamino)-phenyl)(4-methoxyphenyl)-amino)-benzyl) phosphonic acid acted as counter electrode. The assembled electrochromic device achieved panchromatic absorption over entire visible spectrum with almost zero transmittance in colored state. The optical contrast (ΔT) of the device realized in this work was comparable to the highest value (60%) among all reported black-to-transmissive ECDs. Furthermore, excellent cycling stability was achieved, which maintained almost 80% of the initial ΔT value at 570 nm after continuous 100,000 switchings. These outstanding comprehensive electrochromic performances potentially make this device a promising candidate for electrochromic device applications.     

合肥某高校图书馆空调能耗模拟及影响因素分析

结合空调室内外的设计参数,以合肥某高校图书馆为例,分析了不同空调运行模式及不同保温方式对空调系统能耗的影响,得出的结论为图书馆类公共建筑的节能设计、改造提供参考。     

Ceramic flaws: Laboratory tests and analysis using Scanning Electron Microscope to identify surface defects

The pollution of raw materials and ceramic products is a problem that affects all ceramic companies operating in the fields of traditional ceramics and thus needs to be further investigated. The presence of impurities in ceramic glaze and bodies, or between their contact surface, causes aesthetic defects.The aim of this work is to analyse ceramic flaws generated during the processing phases. Analysis of the morphological and compositional imperfections was carried out on different samples by the use of a Scanning Electron Microscope. An efficient model of the flaws in the final ceramic product was later developed, correlating imperfections and pollutants which caused them. In this way the phases of the process, where the pollution might occur, are successfully identified. In order to reach this goal, ceramic samples were created and contaminated in laboratory by the use of potential pollutants, previously and carefully selected in the planning phase of the study.     

大功率LED散热回路热管的实验研究

大功率LED热问题是制约大功率 LED的稳定性、可靠性和寿命的技术瓶颈之一,有效的低热阻封装LED热设计是提高LE D性能的关键。本文提 出一种应用于大功率LED散热的铜-水回路热管(LHP),研究了加热方 式、充液率、风压和倾角 等对LHP均温性、起动性和热阻等的影响。研究结果表明:在输入功率为30W时,LHP的启动时间约为 6.5min;热阻范围为0.48～1.62K/W;在热 负荷为30W时,蒸发器的温度可以稳定控制在75℃以下;蒸发器表 面均温差被控制在1.6℃以下;LHP的最佳的充液率为60%;冷凝器侧 风压在一定范围内(小于130Pa)时,冷凝器侧风压力越大,LED产 品的散热性能越好。     

Synthesis and properties of new water‐soluble copolymers based on methyl acrylic acid sucrose ester and methyl acrylic acid

The new series of copolymers were obtained based on free radical solution copolymerization by mixing self‐made methyl acrylic acid sucrose ester (MASE) and methyl acrylic acid (MAA) with different ratios. Copolymerization behavior and properties of the new copolymers was investigated with the reaction time, temperature, monomer ratios and characterized by Fourier transform infrared spectra (FT‐IR), carbon nuclear magnetic resonance (¹³C NMR), and intrinsic viscosity. The results indicated that sucrose was successfully grafted onto poly (methyl acrylic acid). Further, it was demonstrated that low temperature benefited the esterification of MASE. Importantly, the copolymers were founded to have good compatibility with polymethyl methacrylate (PMMA), polytetrafluoroethylene (PTFE), and polyethylene (PE). © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016 , 133, 43627.