Yanshan University

About: Yanshan University is a education organization based out in Qinhuangdao, China. It is known for research contribution in the topics: Microstructure & Control theory. The organization has 19544 authors who have published 16904 publications receiving 184378 citations. The organization is also known as: Yānshān dàxué.

Topological Dirac nodal-net fermions in AlB 2 -type TiB 2 and ZrB 2

Abstract: Based on first-principles calculations and effective model analysis, a Dirac nodal-net semimetal state is recognized in ${\mathrm{AlB}}_{2}$-type ${\mathrm{TiB}}_{2}$ and ${\mathrm{ZrB}}_{2}$ when spin-orbit coupling (SOC) is ignored. Taking ${\mathrm{TiB}}_{2}$ as an example, several topological novel states have been found in this nodal-net structure including triple point, nexus, and nodal link, which are protected by the coexistence of spatial-inversion symmetry and time-reversal symmetry. In addition, linearly and quadratically dispersed two-dimensional surface Dirac points have been identified as getting on the B-terminated and Ti-terminated (001) surfaces of ${\mathrm{TiB}}_{2}$, respectively, which are analogous to those of monolayer and bilayer graphene.

The role of fixed capital formation, renewable and non-renewable energy in economic growth and carbon emission: a case study of Belt and Road Initiative project

Abstract: Economic integration in the form of Belt and Road Initiative project opens many opportunities and hazards, especially of the participating nations’ environment. The current study attempted to empirically test the economic and energy usage (renewable and non-renewable) impact on some selected countries of belt and road projects. For this purpose, the panel data set of twenty-four emerging economies of belt and road projects was selected from 1995 to 2014. The autoregressive distributed lags technique of econometric applied to determine the effect of renewable and non-renewable energy, GDP and GDP2 for EKC, and gross fixed capital formation on carbon emission in the selected countries of Belt and Road Initiative project. The outcomes of this study confirm the existence of EKC in these underlined countries. Here, fossil fuel-based energy consumption is a source of environmental degradation, while renewable and clean energy usage can help sustain environmental conditions without affecting economic growth progress. Capital fixed formation in these economies can enhance economic growth and help to sustainable environmental conditions in the belt and road countries. Thus, based on these empirical outcomes, this study suggests economic and financial assistance in green renewable energy sources and clean technological innovation to enhance economic benefits of Belt and Road Initiative project without compromising the environmental conditions of the region.