Geopolitical risk and the systemic risk in the commodity markets under the war in Ukraine

Causality of geopolitical risk on food prices: Considering the Russo–Ukrainian conflict

Connectedness between geopolitical risk, financial instability indices and precious metals markets: Novel findings from Russia Ukraine conflict perspective

The Russo-Ukrainian war and financial markets: the role of dependence on Russian commodities

PurposeThe purpose of this paper is to assess the impact of the Ukraine–Russia military conflict on the returns and investment flows of equity funds across multiple countries.Design/methodology/approachUsing a comprehensive sample of 1,281 equity funds in 40 countries. The countries were segregated into conflict states, members of NATO, and those which abstained from voting on the UN resolution on March 2, 2022. The authors employ a GARCH-based event study and estimate CARs for t−5, t−3, t, t + 3, and t + 5 event windows. Further, the authors use panel estimation to assess the link between the CARs and the investment exposure of the sample funds.FindingsThe findings highlight an adverse reaction of mutual funds in Russia, Ukraine, and the NATO States. On the contrary, the mutual funds in the countries that abstained during the voting on the UN resolution on March 2nd posted positive abnormal returns. Similarly, the investment exposure towards the conflicted countries and NATO states is unfavorable except for the abstained countries.Originality/valueThis is the primary study to evaluate the impact of the recent geopolitical tensions on mutual funds domiciled across various geographical locations.

The price reaction and investment exposure of equity funds: evidence from the Russia–Ukraine military conflict

Geopolitical risk and dynamic connectedness between commodity markets

In order to solve the problems of high temperature rise and large temperature difference of the battery pack, a novel liquid-immersed battery thermal management system (BTMS) for lithium-ion pouch batteries with compact structure and excellent heat dissipation performance was designed. High insulation No.10 transformer oil was employed as the immersion coolant, and the system could operate in active and passive modes. The experimental platform consisting of five 10Ah lithium-ion pouch batteries connected in parallel was constructed to investigate the cooling performance and its influencing factors of liquid-immersed BTMS. The results demonstrated that the liquid-immersed cooling scheme with the immersion depth of 13.2 cm (the full immersion height) and the flow rate of 0.8 L/min exhibited the optimal thermal management performance under the discharge rate of 2C (100A) and the ambient temperature of 25 °C. Compared with that without immersion coolant (i.e. natural air cooling), the maximum temperature decreased from 58.3 °C to 39.4 °C, which fell by 32.4%; and the maximum temperature difference of the battery module decreased from 4.97 °C to 1.23 °C, with a decrease of 75.3%, the cooling performance of BTMS was greatly improved. Hence, the liquid-immersed BTMS would be an effective and suitable thermal management system for lithium-ion pouch batteries. 

Thermal performance of a liquid-immersed battery thermal management system for lithium-ion pouch batteries

Curve extrusion processes, including symmetric curve extrusion (SCE) and asymmetric curve extrusion (ACE) processes, were proposed to fabricate Mg–3Al–1Zn (AZ31) alloy sheets with the aim of improving planar anisotropy. For comparison, traditional extrusion (TE) was conducted on producing AZ31 sheets. The dynamic recrystallization and flow behavior of AZ31 Mg alloy during extrusion were examined and analyzed, and the final microstructures and mechanical properties of AZ31 sheets were investigated. In comparison with the TE sheet, finer grain size, more uniform microstructure and weaker tilted basal texture were achieved in the SCE and ACE sheets. Both the SCE and ACE sheets exhibited unique textures which basal poles tilted to extrusion direction (ED) and new transverse direction (TD)-tilted texture component was developed. The reasons were mainly ascribed to the introduction of additional flow velocity difference along TD during extrusion. Furthermore, the ACE sheet exhibited the lowest basal pole intensity, which was attributed to the introduction of extra asymmetric shear deformation during extrusion process. As a result, the ACE sheet showed the lowest yield strength and r-value, but highest elongation and n-value. Improving the planar anisotropy of AZ31 sheet was achieved by the ACE process. 

Tailoring microstructure and texture of Mg–3Al–1Zn alloy sheets through curve extrusion process for achieving low planar anisotropy

http://manuscript.elsevier.com/S2405829721006000/pdf/S2405829721006000.pdf

Vladimir P. Sotskov

Papers

Geopolitical risk and dynamic connectedness between commodity markets

Thermal performance of a liquid-immersed battery thermal management system for lithium-ion pouch batteries

Tailoring microstructure and texture of Mg–3Al–1Zn alloy sheets through curve extrusion process for achieving low planar anisotropy

A multiphysics understanding of internal short circuit mechanisms in lithium-ion batteries upon mechanical stress abuse

Identification and ecotoxicity prediction of pyrisoxazole transformation products formed in soil and water using an effective HRMS workflow