BACKGROUND Whilst being the most prevalent disease worldwide, dental caries is increasingly concentrated in high-risk populations. New caries treatments should therefore be evaluated not only in terms of their cost-effectiveness in individuals, but also their effects on the distribution of costs and benefits across different populations. To treat deep caries, there are currently three strategie...

The similar material plays an important role in Geo-mechanical model test, and the proportion influences the test results directly. According to the physical and mechanical properties of the prototype, the cementitious material with good elastic-plastic for iron crystal sand (ISBM) was chosen as the similar material for the research on failure mechanism of surrounding rock under the environment...

INTRODUCTION At the invitation of the Dean and Chapter of Rochester Cathedral, the Canterbury Archaeological Trust carried out an excavation within the Lay cemetery of the Cathedral during April and May 1990. This project, funded by the Cathedral authorities, was undertaken before work began on the consolidation of the foundations of the Chair Store, which is situated between the west side of t...

Deep dentinal lesion progress is often presented as the point of no return for the specific pulp involved. In these lesions, however large variations and changes within the lesion environment may be detected. As the disease process is better studied and understood, more conservative treatments have come 5 up in the treatment of deep carious lesions. One such is a step-wise excavation procedure,...

The deep rock masses show a different mechanical behavior compared with the shallow rock masses. They are classified into alternating fractured and intact zones during the excavation, which is known as zonal disintegration. Such phenomenon is a great disaster and will induce the different excavation and anchoring methodology. In this study, a 3D geomechanics model test was conducted to research...

Abstract Steel sheet pile walls are being widely used in civil engineering projects for support systems. Soil is not uniform in depth, sometimes may be exit loose or soft soil layer in various depth. This issue can cause different effects on ground surface displacements, forces and moments acting on sheet piles and struts during excavation procedure, compared with status that soil is uniform...