Super-oleophilicity Co-doping Co2+/F-/TiO2 one-dimensional nanotubes for photocatalytic denitrification of light oil

In this study, a simple hydrothermal synthesis method was adapted for the preparation of Co-doping Co²⁺/F^-/TiO₂ nanotubes photocatalyst, and the micro-nano structure of catalysts prepared by biomimetic technology which makes the catalyst have super-oleophilicity property. Co²⁺/F^-/TiO₂ revealed improved photocatalytic performance for denitrification of light oil compared to single TiO₂ photocatalysts. The enhance of photocatalytic activity can be attributed to narrowing the band gap, increasing the light response wavelength and exposing more highly active crystal surfaces due to synergistic effects of Co²⁺ and F^? in the photocatalyst.     

离子膜车间杜邦膜监测工作总结

通过对杜邦膜NX2002TX和旭硝子公司的F-893膜在第1年应用中运行数据的比较。证明在使用第1年内，NX2002TX膜的性能高于F-893膜。     

Materials for supercapacitors: When Li-ion battery power is not enough

Supercapacitors, also known as electrochemical capacitors, have witnessed a fast evolution in the recent years, but challenges remain. This review covers the fundamentals and state-of-the-art developments of supercapacitors. Conventional and novel electrode materials, including high surface area porous carbons for electrical double layer capacitors (EDLCs) and transition metal oxides, carbides, nitrides and their various nanocomposites for pseudocapacitors – are described. Latest characterization techniques help to better understand the charge storage mechanisms in such supercapacitors and recognize their current limitations, while recently proposed synthesis approaches enable various breakthroughs in this field.     

玉米赤霉烯酮多克隆抗体的制备及特性分析

合成玉米赤霉烯酮半抗原,应用液相色谱-质谱联用法进行鉴定,并采用活泼酯法将半抗原与载体蛋白OVA或BSA偶联,分别作为免疫原或包被原,并通过SDS-聚丙烯酰胺凝胶电泳(SDS-PAGE)和紫外扫描法鉴定偶联效果,免疫3只BALB/c小鼠,制备玉米赤霉烯酮多克隆抗体。结果表明:抗血清效价最高达1∶32 000,以此多抗建立的玉米赤霉烯酮间接竞争标准曲线IC50为39.8ng/mL,IC10为0.71ng/mL,多抗与玉米赤霉烯酮类似物β-zearalenol、zear-alanone、α-zearalanol、β-zearalanol交叉反应率分别为4.80%,3.07%,0.96%,0.09%。说明试验成功制备了玉米赤霉烯酮人工抗原及高特异性多克隆抗体。     

Numerical verification of the continuous calculation method for tip stress during the driving process of the dynamic penetration test

This paper presents a calculation method for obtaining the continuous variation in stress between the tip and the soil during dynamic penetration tests, particularly in the case of using the Panda 3® penetration testing device. The originality of the method is that the tip stress can be computed continuously throughout the driving process. For each impact of the hammer on the penetrometer, data are recorded by sensors located at the top of the apparatus. Then, the stress at the tip and the displacement of the apparatus are calculated with a method based on the propagation of waves in the device. A three-dimensional numerical model of the penetration test, based on the Panda 3® specifications and using the discrete element method (DEM), is proposed in this paper. The purpose of the simulations is to validate the calculation method by comparing the curves of the tip stress versus the penetration distance obtained in two different ways, the first being the distance directly observed at the tip and the second being the distance calculated from the data recorded at the top of the penetrometer, as with the experimental device. The entire apparatus is represented, including the hammer, the rod, and the tip, and is driven into the model soil. The calculation method is applied, and the results are compared to the actual response of the soil to the driving of the penetrometer directly at the tip, which can be obtained with the numerical model. The responses are found to be very similar, confirming the theoretical framework and its underlying assumptions. This method is applied to dynamic penetration tests and provides the opportunity to obtain mechanical parameters other than the tip resistance from the tests.     

Vodou Material Culture in the Museum: Reflections on the complexities of demonstrating material culture of assemblage and accumulation in a traditional museum environment

Abstract

Through experiences of two different museum spaces the nature of material objects of Vodou are considered. How can the complexities of ritual deposits, assemblage, and continued interaction that are present within a religious space, such as the Vodou altar, be demonstrated to outsiders via a curated space? The materiality of these objects and accumulations is considered and the question is posed as to their importance in the understanding of the nature of Vodou worship. Can a traditional museum setting that favours manufactured objects over the spontaneous ritual deposit and repurposed object convey the intricacy of the material culture of Vodou if it negates the inclusion of these artefacts?     

F-在方解石表面的吸附及其对方解石表面性质的影响

氟元素主要存在于磷矿和萤石等矿物中,这些矿物中都伴生有方解石脉石矿物,在浮选分离的弱酸条件下,矿物表面的F^-会部分溶出并吸附到矿物表面,从而影响矿物表面性质。本文研究了F^-在方解石表面的吸附及其对方解石表面性质的影响机理。结果表明,在矿浆pH 值为5.5时,F^-以化学吸附的方式吸附在方解石表面,随着吸附时间的增加吸附量逐渐增加,90 min时方解石对F^-的吸附达到平衡。在油酸钠(NaOL)为捕收剂时,F^-的存在会降低方解石表面的疏水性。通过Zeta电位测试、溶液化学计算和X射线光电子能谱仪(XPS)分析表明,F^-会和方解石表面的Ca²⁺反应生成CaF₂沉淀,占据方解石表面的Ca位点,降低NaOL在方解石表面的吸附量。     

The effect of chemical reaction on effective diffusivity within biporous catalysts—I: Theoretical development

The effect of chemical reaction on the measured value of the effective diffusivity is studied by comparing diffusivities measured under reaction and noMoments of the effluent curves are derived for various experimental situations, and by suitable mathematical manipulation, it is shown how the adsorptiThese procedures are applied to the experimental data in Part II to show that there can be an order of magnitude difference between diffusivities measu     

Design of FLC for high-angle-of-attack flight using adaptive evolutionary algorithm

In this paper, a new methodology of evolutionary computations - An Adaptive Evolutionary Algorithm (AEA) is proposed. AEA uses a genetic algorithm (GA) and an evolution strategy (ES) in an adaptive manner in order to take merits of two different evolutionary computations : global search capability of GA and local search capability of ES. In the reproduction procedure, the proportions of the population by GA and ES are udaptively modulated according to the fitness. AEA is used for designing fuzzy logic controller (FLC) for a high-angle-of-attack flight system for a super-maneuverable version of F-18 aircraft. AEA is used to determine the membership functions and scaling factors of an FLC. The computer simulation results show that the FLC has met both robustness and performance requirements.     

SC10版用户电路SPL建立方法

介绍F-150交换机SC10版用户电路SPL建立方法。