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AbstractThis paper investigates the notion of stochastic convergence behaviour across the Chinese provinces. Unlike previous works, the present paper takes into account the economic geography by examining the regional clusters and the significant transformation of the Chinese economy through the introduction of structural breaks and nonlinearities in the model. Results indicate that the regional clusters are relevant to the convergence behaviour across China, when both the administrative division and the regional clusters are considered. However, the number of provinces that are converging is higher in the latter case. When nonlinearities were considered across the regional clusters, we found that 18 provinces have already converged with their cluster, 3 provinces are catching up and 10 regions show divergence. These findings are useful for the design and development of national and regional economic policies in the Chinese economy.

Although it is not a new phenomenon, in recent years inequality has moved to the top of the political agenda given the concern that will result in political instability and social resentment. Persistence in inequality can further undermine economic growth and development by hindering educational opportunities, human capital formation, and intergenerational mobility. The persistent nature of inequality stands as one of the most serious challenges for the global economy. This paper analyses inequality persistence for a sample of 60 countries from 1984 to 2015. The authors conclude that inequality is persistent and government redistribution polices through taxes and transfers did not significantly reduce inequality persistence.

Although it is not a new phenomenon, in recent years inequality has moved to the top of the political agenda given the concern that will result in political instability and social resentment. Persistence in inequality can further undermine economic growth and development by hindering educational opportunities, human capital formation, and intergenerational mobility. The persistent nature of inequality stands as one of the most serious challenges for the global economy. This paper analyses inequality persistence for a sample of 60 countries from 1984 to 2015. The authors conclude that inequality is persistent and Government redistribution polices through taxes and transfers did not significantly reduce inequality persistence.

The aim of this paper is to investigate whether there exists a long‐run relationship between the real exchange rate and the commodity terms of trade in the so‐called Mediterranean or MENA countries. These economies are good candidates for this type of formulation, as are commodity exporting countries. Using cointegration techniques, we find long‐run relationships linking the real exchange rate and a commodity‐based measure of the terms of trade. Therefore, commodity terms of trade are a potential explanation for the apparent nonstationarity of MENA countries' real exchange rates previously found in the empirical literature.

Trabajo presentado al Young Researchers CIS, celebrado online del 6 al 8 de septiembre de 2021. ; Financial support from the research project PID2019-104009RB-100 is gratefully acknowledge. M. P.-M. thanks the Aragon Government for her PhD grant. ; Peer reviewed

In recent years, alternative methods to conventional synthesis of MOFs (metal-organic frameworks) have emerged due to the problematic use of solvents for both the environment and human health. Here we present the synthesis of ZIFs (zeolitic imidazolate frameworks) at high pressure by means of a hydraulic press provided with a heating mechanism. By the optimization of parameters such as temperature, time and the addition of promotor NH4NO3, a considerable increase in the reaction yield was achieved in products, neither washed nor activated, obtained since the first minute of reaction. Depending on the operation conditions, ZIF-L appeared as competing phase with ZIF-8. Upon transformation of ZIF-L into ZIF-8 in presence of ethanol, a reaction yield of 58.2% was achieved to highly crystalline ZIF-8 with a BET specific surface area of 947 m2/g. This green, fast, versatile and improved method suggests a possible way to future synthesis of other MOFs and the possibility of their industrial implementation. ; Financial support from the Research Projects MAT2016-77290-R and the PID2019-104009RB-I00/AEI/10.13039/501100011033 (Spanish AEI/FEDER, UE), the Aragón Government (T43-20R and Marta Pérez-Miana PhD grant) and the ESF are gratefully acknowledged. All the microscopy work was done in the Laboratorio de Microscopías Avanzadas (LMA). The authors acknowledge the LMA for offering access to their instruments and expertise and the Servicios de Apoyo a la Investigación (SAI), both from the Universidad de Zaragoza. ; Peer reviewed