Wenbin Wang^*, Yang Cao

International Journal of Mental Health Promotion, Vol.25, No.10, pp. 1127-1136, 2023, DOI:10.32604/ijmhp.2023.030315 - 03 November 2023

Abstract How does psychological distress evolve over time? This study utilizes cross-sectional data from the China General Social Survey from 2010 to 2017 to explore the differences in psychological distress among Chinese residents at various ages, periods, and cohorts. The dummy variable method and random effects hierarchical age-period-cohort model were employed to isolate the age, period, and cohort effects that impacted the psychological distress of Chinese urban residents. First, in terms of the age effect, the psychological distress experienced by residents tends to increase initially and then decrease with age. Middle-aged individuals, around 40 years old,… More >

Meng Song^1,*, Yuncai Liu², Zhen Wang¹

FDMP-Fluid Dynamics & Materials Processing, Vol.18, No.2, pp. 313-327, 2022, DOI:10.32604/fdmp.2022.017737 - 16 December 2021

Abstract The purpose of the study is to implement a new model based on the Navier-Stokes equations for the characterization of landslide sediments interacting with a moving fluid. The model is implemented by combining Hypermesh, the LS-DYNA software and MATLAB. The results show that the main factors affecting the permeability of landslide sediments are the genetic mechanism, the structure and composition of materials, material lithology, and stress. The characteristics and mechanism of permeability changes are determined by adjusting the water levels of fluids. It is found that the permeability of landslide sediments increases at the front More >

PAN Yi-shan, XIAO Xiao-chun, LV Xiang-feng

The International Conference on Computational & Experimental Engineering and Sciences, Vol.16, No.4, pp. 97-98, 2011, DOI:10.3970/icces.2011.016.097

Abstract Gas slippage effects is the first time found by Kundt and Warburg, Muskat for the first time applied gas flow in porous media theory to the development of oil and gas fields, it marks gas slippage effect theoretical research possible to achieve low permeability gas reservoirs industrialized mining. In recent years, our country scholars used the theoretical analysis and experimental research methods to low permeability gas reservoirs of slippage effects, to achieve low permeability gas reservoirs industrialization mining provide a theoretical basis, as for coal-bed methane reservoir gas slippage effects study is extremely rare. So… More >