白云鄂博矿区富钾板岩中稀土铌矿物特征研究*

采用主要化学成分分析、自动矿物分析系统、偏反光显微镜、场发射扫描电镜、能谱仪等手段对白云鄂博矿区内富钾板岩化学成分、矿物组成以及稀土铌矿物特征等方面进行研究。结果显示，白云鄂博矿区内富钾板岩K2O含量高达13.15%，高SiO2富Al2O3，岩石主要由微斜长石与黑云母组成；富钾板岩中REO与Nb2O5含量分别为0.076%、0.012%，稀土、铌矿物含量低且粒度细小，形态产状多种多样，矿物共生组合与接触关系复杂，指示富钾板岩遭受了后期热液的蚀变改造作用。     

Controlled nanodot fabrication by rippling polycarbonate surface using an AFM diamond tip

The single scratching test of polymer polycarbonate (PC) sample surface using an atomic force microscope (AFM) diamond tip for fabricating ripple patterns has been studied with the focus on the evaluation of the effect of the tip scratching angle on the pattern formation. The experimental results indicated that the different oriented ripples can be easily machined by controlling the scratching angles of the AFM. And, the effects of the normal load and the feed on the ripples formation and their periods were also studied. Based on the ripple pattern formation, we firstly proposed a two-step scratching method to fabricate controllable and oriented complex three-dimensional (3D) nanodot arrays. These typical ripple formations can be described via a stick-slip and crack formation process.     

平顺天台庵正殿

山西省平顺县的天台庵正殿是山西省文物保护单位，相关专家推断其为唐代遗构。本文通过分析在考察中取得的数据资料，就其物征和用材尺度等方面对建筑物年代做初步探讨。     

火电输煤系统物流工艺

煤是火电的主要能源,输煤系统作为火电的重要组成部分,担负着卸煤、储存、配送、筛分和破碎等工作。对输煤系统进行深入地解析,通过物流管理的理念来设计输煤系统的关键工艺环节,使整个输煤系统既能安全有效地运行又能节约经济成本。     

Fabrication of a low‐cost nano‐SiO2/PVC composite ultrafiltration membrane and its antifouling performance

A novel low‐cost SiO₂/Polyvinylchloride (PVC) membrane with different nano‐SiO₂ particles loading (0–4 wt %) was prepared by the phase‐inversion process. The optimum nano‐SiO₂ dosage was determined as 1.5 wt % based on the casting solution compositions, the membranes' mechanical properties and hydrophilicities, the pure water fluxes, microstructures, and absorption of protein. Compared with the bare membrane, the membrane with 1.5 wt % nano‐SiO₂ addition presented better capabilities against the protein absorption and bacterial attachment, better antifouling performance, and higher flux recovery ratio in filtration of the supernatant liquor which collected from a secondary sedimentation tank in a municipal wastewater plant. The SiO₂/PVC membranes have applicable potential in the municipal wastewater treatment for their low price, good antifouling performance and high removal efficiencies of SS (over 97.2%), COD (up to 82.9%) and total bacteria (more than 93.6%). © 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015 , 132, 41267.     

Y5V多层陶瓷电容器低频介电性能失效研究

研究了Y5V多层陶瓷电容器(MLCC)在直接浸泡和电化学注氢两种作用下的低频介电性能。结果表明直接浸泡对样品性能的影响很小,这与电子元器件成品的封装技术造成的保护作用有关。然而电化学注氢会对样品造成显著的影响,样品的电容值会随之减小,同时其介电损耗及漏电流增大,这是由于电化学注氢过程中所产生的氢离子会沿着电容器的电极进入元件内部,从而与原材料产生作用造成的,这种作用效果会随着电容器的多层结构而显著表现出来。     

按需供给的移动云计算动态安全服务

提出一套按需供给移动云计算安全服务解决方案,提升了云计算环境中安全资源的使用率,充分保障云服务的安全。该方案针对移动互联网环境,基于云计算提供服务的业务,满足不同用户、不同业务对安全的复杂、多变、多样化的安全需求,能够动态、实时地感知并分析安全态势、调整安全执行策略,尽可能地为用户降低安全支出成本,为不同用户、不同安全状态下的移动互联网业务提供差异化、高效的安全防护机制。     

M-ICT时代的业务智能化发展趋势

认为在M-ICT时代,在云计算和政企业务领域总体趋势为:首先,发展方向从软件定义的存储,到软件定义计算,到软件定义的数据中心;其次,微模块正成为数据中心部署的主流模式,而Open Stack主导数据中心的管理方式;第三,云计算技术正在重塑容灾备份方案,私有云与公有云融合的混合云正成为政企云建设的重要模式,而分布式块存储引领企业存储。认为因为云计算的发展和成熟,使得大数据和人工智能得以快速发展,从而进一步促进了ICT融合业务的创新:首先,Hadoop与Spark开源大数据平台成为业界主流,内存和流计算成为热点,针对特定场景的专有计算方式不断涌现;其次,智能问答成为人工智能的热点,实用性强前景广阔,而机器智能与行业应用深度结合使基于统一基础平台开发定制成为趋势。认为基于Web RTC的轻量级的企业协同走向成熟,Web技术的发展促使ICT融合新业务发展格局正在不断改变并持续前行。     

He+离子辐照Inconel 718合金表面形貌改变及机理研究

研究了3种不同剂量He⁺离子辐照后Inconel 718合金的形貌变化规律及其形成机理。结果表明，He⁺离子辐照会在合金表面形成纳米多孔结构，其孔径会随辐照剂量的增加而增大。此外，He⁺离子辐照还会破坏合金表面δ相并导致碳化物的持续溅射损耗，且这一现象会随着辐照剂量的增加而愈发严重。由于辐照过程中氦泡间微观应力σ n作用会引起毗邻材料断裂及氦泡合并长大，且辐照溅射作用又会导致氦泡上层薄膜的损耗甚至破裂，因而这也是He⁺离子辐照Inconel 718合金表面纳米多孔结构的形成机制。