Correction to: Bismuth Yttrium Oxide (Bi3YO6), A New Electrode Material For Asymmetric Aqueous Supercapacitors

Journal of Inorganic and Organometallic Polymers and Materials - The original version of this article unfortunately contained mistakes. In line 9 of the abstract, 5% should read as 2%. The...     

搅拌摩擦加工Zr41Ti14Cu12.5Ni10Be22.5大块非晶的组织和性能

研究了搅拌摩擦加工对Zr41Ti14Cu12.5Ni10Be22.5大块非晶的组织和性能影响规律。结果表明：搅拌摩擦加工后非晶合金没有发生晶化。室温下准静态压缩后,母材区﹑热影响区﹑搅拌区试样的抗压强度基本相当,但是搅拌区和热影响区的弹性模量明显提高,搅拌区和热影响区试样断裂前均出现锯齿流变现象,其断口呈现多重剪切特征,认为这与搅拌摩擦加工改变自由体积浓度和分布有关     

Porous SnIn4S8 microspheres in a new polymorph that promotes dyes degradation under visible light irradiation

Porous SnIn(4)S(8) microspheres were initially synthesized through a facile solvothermal approach and were investigated as visible-light driven photocatalysts for dyes degradation in polluted water. The photocatalysts were characterized by XRD, SEM, TEM, N(2) adsorption-desorption, and UV-vis diffuse reflectance techniques. Results demonstrated that the as-synthesized SnIn(4)S(8) was of a new tetragonal polymorph, showing a band-gap of 2.5 eV, a specific surface area of 197 m(2) g(-1), and an accessible porous structure as well. The photocatalytic activity of the porous SnIn(4)S(8) was evaluated by decomposition of several typical organic dyes including methyl orange, rhodamine B, and methylene blue in aqueous solution under visible light irradiation. It is demonstrated that porous SnIn(4)S(8) was highly photoactive and stable for dyes degradation, showing photocatalytic activity much higher than binary constituent sulfides like In(2)S(3), SnS(2), or even ternary chalcogenide ZnIn(2)S(4) photocatalyst. The excellent photocatalytic performance of porous SnIn(4)S(8) is the consequence of its high surface area, well-defined porous texture, and large amount of hydroxyl radicals.     

A-site Ca2+ substitution induced polyvalent Cu cations and correlated polaron relaxations in colossal permittivity Li1-xCaxCuNb3O9

LiCuNb₃O₉ has been reported newly a colossal permittivity (CP) perovskite, in which the B-site NbO₆ octahedra play a bridging role in the polaron hopping. However, how the A-site modification affects the origin of the polarons and further the CP behaviours remains unexplored. To this end, A-site Ca²⁺ was incorporated to form Li_1-xCa_xCuNb₃O₉, and the local states, dielectric relaxations and conduction behaviours were comprehensively studied. The substitution induces the polyvalent Cu cations, i.e. Cu⁺/Cu²⁺/Cu³⁺. Bond valence sum calculations imply that Cu²⁺ and Cu³⁺ are underbonded, and Cu⁺ is overbonded, while B-site Nb⁵⁺ shows slightly different with theoretical pentavalence. All the compositions exhibit a similarly room-temperature CP response, but present two dielectric relaxations, i.e. T_R1:170–300 K and T_R2:260–400 K. Comprehensive investigations on universal dielectric response and bulk dc conductivity indicate that the T_R1 follows the variable-range-hopping where the electron hopping between the mixed Cu⁺/Cu²⁺, while T_R2 contributes from the Cu³⁺ nearest neighbor hopping.     

运载火箭可视化仿真系统的设计与实现

研究了基于高层体系结构(high level architecture,HLA)技术的运载火箭可视化仿真系统体系结构的设计与实现,提出了"超联邦"的概念,实现了一种支持多联邦、多人同时操作的仿真控制平台,开发了OGRE_RTI(run-time infra-structure)适配器.实现了面向对象图形渲染引擎(object-oriented graphics rendering engine,OGRE)在HLA/RTI环境中的有效集成.     

SX湿式三效除尘机组在合钢烧结厂混料工段的应用

合钢烧结厂混料工段除尘系统处理的含尘气体温度高、湿度大，粉尘中生石灰的含量比其它烧结厂高两倍以上。极易堵塞风管和设备。在本次除尘系统的改造中。采用了湿式三效除尘机组，并在管道内设置了水洗装置，收到了良好的效果。     

HE系列空气负离子发生器对氡及其子体的净化作用

本文探讨了ＨＥ－Ⅰ和ＨＥ－Ⅱ型空气负离子发生顺降低地下人防工程内氡及其子体浓度的效果。实验结果表明，ＨＥ系列空气负离子发生器降低氡浓度的效果不明显，但使氡子体浓度有明显的降低。     

Dough-Like Aramid Nanofiber Putty-Assisted Design of Free-Standing Liquid Metal-Based Films for Ultrahigh Electromagnetic Interference Shielding

Gallium-based liquid metal (LM) is expected to be an ideal candidate for flexible electromagnetic interference (EMI) shielding materials in wearable electronics due to its excellent electrical conductivity and extraordinary fluidity. However, it is difficult to fabricate LM as a free-standing material due to its high surface tension and unmanageable fluidity, as well as its poor compatibility with other materials. Herein, a processing strategy is developed to fabricate free-standing LM-based films by vacuum filtration with the assistance of dough-like aramid nanofiber (ANF) putty. The ANF putty improves the compatibility of ANF and LM, and also greatly improves the stability, reliability, and processability of ANF. Rational design of the structure enables the preparation of LM/ANF films with ANF as the nanobridge connecting LM micro/nanodroplets, and ANF-LM-ANF sandwich films with ANF as the shells, LM layer as the core. The LM/ANF film (tensile strength: 5.4 MPa) exhibits an ultrahigh EMI SE of up to 105.9 dB (8.0–12.4 GHz) at a thickness of 60 μm. While the ANF-LM-ANF sandwich film has higher mechanical strength (33.1 MPa), and also has good EMI shielding properties. The average EMI SE of the 10 μm thick sandwich film exceeds 45 dB in the X-band.     

基于CATIA/CAA的轨道车辆压型件毛坯展开系统开发

压型件作为轨道车辆主要钣金零件组成部分,其毛坯展开精确性对控制成形精度和制造成本有重要作用。采用一步逆算法,基于CATIA/CAA平台开发一套方便用户交互的轨道车辆压型件毛坯展开GUI界面,完成对轨道车辆压型件毛坯的精确展开。以轨道车辆典型压型件小弯梁为研究对象,验证所开发毛坯展开系统的实用性。     

纹理映射在模型优化中的应用

三维模型的构建是虚拟现实及视景仿真系统中最基本、最重要的组成部分之一。构建三维模型需考虑到场景浏览的真实感与实时性,因而需要建立一个最优化的可视化模型。本文比较了在虚拟现实系统中模型优化的方法,采用了纹理映射代替多边形建模创建高效真实感模型的优化手段,着重介绍了颜色纹理和凹凸纹理的相关理论和方法,并应用于视景仿真系统中,极大的提高了实时性,并保证了真实感。