Magnesium sulphate attenuate remifentanil-induced postoperative hyperalgesia via regulating tyrosine phosphorylation of the NR2B subunit of the NMDA receptor in the spinal cord

Data of PWTL and PWMT values in the study. (XLS 19 kb

A General Equilibrium Assessment of COVID-19’s Labor Productivity Impacts on China’s Regional Economies

This study introduces a database for analyzing COVID-19’s impacts on China’s regional economies. This database contains various sectoral and regional economic outcomes at the weekly and monthly level. In the context of a general equilibrium trade model, we first formulate a mathematical representation of the Chinese regional economy and calibrate the model with China’s multi-regional input-output table. We then utilize the monthly provincial and sectoral value-added and national trade series to estimate COVID-19’s province-by-month labor-productivity impacts from February 2020 to September 2020. As a year-on-year comparison, relative to February 2019 levels, we find an average 39.5% decrease in labor productivity (equivalent to around 305 million jobs) and an average 25.9% decrease in welfare. Labor productivity and welfare quickly returned to the recent high-growth trends for China in the latter half of 2020. By September 2020, relative to September 2019, average labor productivity increased by 12.2% (equivalent to around 94 million jobs) and average welfare increased by 8.2%

Compressed air energy storage in salt caverns in China: Development and outlook

With the promotion of China’s carbon peaking and carbon neutrality goals, the energy industry is transforming from traditional fossil energy to renewable energy, which is sustainable, clean and safe. The development of renewable energy is not only an important measure to achieve the above goals but also a significant factor to alleviate the global energy crisis. Salt caverns, with good air tightness, have been considered as the best choice for large-scale underground energy storage. To elaborate on the research and future development of salt cavern compressed air energy storage technology in China, this paper analyzes the mode and characteristics of compressed air energy storage, explores the current development, key technologies and engineering experience of the construction of underground salt caverns for compressed air energy storage at home and abroad. Focusing on salt cavern compressed air energy storage technology, this paper provides a deep analysis of large-diameter drilling and completion, solution mining and morphology control, and evaluates the factors affecting cavern tightness and wellbore integrity. The future development and challenges of underground salt caverns for compressed air energy storage in China are discussed, and the prospects for the three key technologies of large-diameter drilling and completion and wellbore integrity, solution mining morphology control and detection, and tubing corrosion and control are considered. This paper aims to provide a useful reference for the development of underground salt cavern compressed air energy storage technology, the transformation of green and renewable energy, and the realization of carbon neutral vision.Document Type: Invited reviewCited as: Wan, M., Ji, W., Wan, J., He, Y., Li, J., Liu, W., Jurado, M. J. Compressed air energy storage in salt caverns in China: Development and outlook. Advances in Geo-Energy Research, 2023, 9(1): 54-67. https://doi.org/10.46690/ager.2023.07.0

Study on Impact of Compositional Gradient on Volatile Oil Reservoir Development

The existing of compositional gradient in volatile oil reservoir makes the reservoir special. It will have great significance in calculating reserves, determining reasonable development mode and improving volatile oil recovery，if the composition profile and vertical distribution characteristic of the underground fluid are considered, when developing volatile oil reservoir. Based on the theory of compositional gradient[1], the paper analyzed the compositional gradient in various kinds of reservoir, researched the impact of compositional gradient on reserves estimation in volatile oil reservoir, and then evaluated the final recovery efficiency of different development modes (depletion, water-flood, gas injection) with the method of compositional numerical simulation. Results show that: If the reservoir fluid contains more light components, the compositional gradient phenomenon will be more obvious; by choosing fluid samples at the middle of the reservoir to calculate reserves of the volatile oil reservoir, accurate value will be obtained; when developing volatile oil reservoirs, the compositional gradient phenomenon affects greater on recovery efficiency of gas injection development than that of depletion and water-flood development. The achievements provide theoretical guidance and basis for volatile oil reservoir development.Key words: Volatile oil reservoir; Compositional gradient; Compositional simulation; Development mode; Phase behavio