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由于在磁性材料体系中缺失时间反演对称性,导致nodalchain被破坏,所以nodalchain通常存在于非磁材料中。但是,磁性材料EuAuBi是与常规磁性材料不同。本工作以第一性原理计算为研究方法,预言了在不考虑自旋轨道相互作用时,磁性材料EuAuBi体系为新型拓扑nodalchain半金属;当考虑自旋轨道耦合时,EuAuBi会退化为外尔半金属。对于非磁材料BaAuBi来说,在不考虑自旋轨道相互...
采用随机踢球模型结合密度泛函理论,在PBEPBE/RE/SDD/Si/6-311+G(d)水平下研究了中性和阴性的硅基稀土掺杂团簇MSi7q(M=Eu,Sm,Yb;q=0,-1)的几何结构、稳定性及电子和磁学性质.计算结果表明,阴性团簇的基态结构是在五角双锥的双锥侧面外法向方向加入一个Si原子而形成的3D结构
During the last two decades we have witnessed great improvements in ICT hardware and software technologies. Three-dimensional content is starting to become commonplace now in many applications. Althou...
Raw cow milk represents one of the most important commodity in the agricultural market. The Slovak agro-food foreign trade is characterized by a substantial increase in the commodity trade, monitoring...
Understanding planetary atmosphere-surface exchange and extra-terrestrial-surface formation processes within our Solar System is one of the fundamental goals of planetary science research. There has b...
利用紫精功能化的配体1-(3,5-二羧基苄基)-4,4'-联吡啶硝酸盐 (H2L+NO-3)与Eu(Ⅲ)离子在溶剂热条件下得到一个金属有机配合物{[Eu(μ2-OH)(L)(HCO2)]·H2O}n(1),其中甲酸阴离子来自于溶剂DMF(N,N'-二甲基甲酰胺)分子的原位分解。 单晶X射线衍射表明配合物1是一个手性的二维层状结构。 配合物1呈现出可逆的、快速响应的光致变色特性。 在光热作用下,它表...
The active involvement of EFSA in the area of pesticide residues assessment started in 2006 following the adoption of new legislation on maximum residue levels (MRLs) of pesticides in food (Regulation...
This paper presents considerations and solutions, done by the National Survey and Cadastre (KMS), to overcome challenges in the transition from analogue to pure digital aerial image collection. Consid...
The paper analyses disparity in the performance of farms in the EU countries and identifies their causes. The individual countries are ranked in the paper according to the long-term average of the amo...
We investigate the degree of financial integration within and between European countries. We construct two measures of de-facto integration across European regions to capture “diversific...
One of the remarkable differences in contract law between legal systems in the European Union and China is the definition and status of contractual freedom. Historically, contractual freedom has not b...
n the early fall of 1998, we sat gazing over the coastal ocean that surrounds Sicily. Scientists from around the world had gathered to participate in a SEPM-IAS (Society for Sedimentary Geology-Intern...
‘ReCover’ was a 3-year EU-FP7 project (Nov. 2010 – Dec. 2013), aiming to develop and improve science based remote sensing services to support tropical forest management and activities to reduce emis...
The paper informs about partial results gathered and processed in the framework of the international research project “Learn for Work”, Leonardo da Vinci programme. The goal of the research project wa...

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