Qun Wang Livres

Focusing on the development of a validated finite element model, this monograph presents a sophisticated approach to predicting and preventing traumatic brain injuries during vehicle collisions. The model, based on advanced imaging techniques, features over 293,000 nodes and 1,173,000 elements, accurately reflecting human anatomy. It incorporates detailed material properties and has demonstrated enhanced biofidelity compared to previous models. This innovative tool aims to refine Head Injury Criteria and improve safety systems, ultimately contributing to a deeper understanding of injury mechanisms in automotive contexts.

This work presents an indirect hydro-mechanical (HM) coupling concept to study the caprock integrity with regards to CO2 storage in saline aquifer by means of numerical simulations. The HM coupling concept is realized by developing an effective mean stress dependent permeability model and an effective mean stress dependent Biot’s coefficient model in reservoir sandstones. The developed models are implemented into the numerical HM-simulator TOUGH2MP-FLAC3D by writing functions with Fortran 90 in an open source code TOUGH2MP and FISH Language in FLAC3D, respectively. The pilot project for CO2 storage in Ketzin is chosen as a case study to validate the developed HM concept. The numerical simulations are performed using the modified HM coupling simulator TOUGH2MP-FLAC3D. The good agreement of the simulation results with the existing research data suggests that the developed coupling concept can be used for the caprock integrity analysis in the pilot project at Ketzin. In addition, a generic model with reasonable assumption is adopted to study the caprock integrity with regards to CO2 storage in saline aquifer under commercial injection conditions, and the results confirm that the developed coupling concept can be applied to CO2 storage in commercial scale.

This book analyzes the patterns of and factors associated with health seeking behavior and out-of-pocket (OOP) spending on chronic non-communicable diseases (CNCDs) in rural Malawi. The author used descriptive statistics to describe treatment options and related household OOP expenditure on CNCDs and econometrics models to analyze factors influencing health seeking behavior and OOP expenditure on CNCDs. This study found that in spite of a context where care for CNCDs should in principle be free of charge at the point of use, the utilization rates of CNCD care are still low and OOP payments impose a considerable financial burden on rural households, especially among the poorest.