Soil conditioning is of great significance for tunneling in soft ground with earth pressure balance shield (EPBS) machines, which leads to safe, highly efficient, and high-quality tunneling.To study the effects of soil conditioning on properties of a clay-sand-gravel mixed soil encountered in an EPBS tunneling project in Beijing, a series of geotec
How to endow diverse functions for lightweight structures without increasing mass has always been a major challenge (e.g., to have simultaneous high static stiffness and extreme-low dynamic stiffness in one structure) from both fundamental science and engineering application.In this work, Archimedean spiral metastructures are proposed for low-frequ
BACKGROUND: Infectious bursal disease (IBD) is a highly contagious immunosuppressive disease of young chickens caused by infectious bursal disease virus (IBDV).IBDV consists of a two-segmented double-stranded RNA genome which can easily undergo genomic recombination or reassortment during mixed infections.OBJECTIVES:The objectives of this study wer
Online surveys have become a popular method for data gathering for many reasons, including low costs and the ability to collect data rapidly.However, online data collection is often conducted without adequate attention to implementation details.One example is the frequent use of the forced answering option, which forces the respondent to answer eac
Background Universities can be understood as work-like environments for students, with similar risks and expectations regarding psychosocial environment.Limited research has examined this study environment from a Demand-Control-Support perspective with regard to sexual harassment.Understanding this environment Sofa/Chairs/Table Set (4/CN) is key to