There has been increased deconstruction and demolition of reinforced concrete structures due to the aging of the structures and redevelopment of urban areas resulting in the generation of massive amounts of construction. The production volume of waste concrete is projected to increase rapidly over 100 million tons by 2020. However, due to the high cement paste content, recycled aggregates have ...

Induction of ornithine decarboxylase (ODC), a key enzyme in polyamine biosynthesis, in ODC transgenic skin stimulates epidermal proliferation but not hyperplasia, activates underlying stromal cells and promotes skin tumorigenesis following a single subthreshold dose of a carcinogen. Because chronic wounds are a well-recognized risk factor for skin cancer, we investigated the response to a tissu...

Abstract This study aimed to determine the abrasion resistance of ultra-high-performance concretes (UHPCs) for railway sleepers. Test samples were made with different cementitious material combinations and varying steel fiber contents shapes, using conventional fine aggregate. A total 25 UHPCs two high-strength (HSCs) selected evaluate their depth wear bulk properties. The results coefficient v...

CLINICAL QUESTION What is the best treatment for traumatic corneal abrasion? RESULTS Eye patching does not reduce pain in patients with corneal abrasions. Topical diclofenac does reduce pain in patients with corneal abrasions IMPLEMENTATION Pitfalls to avoid when treating abrasions: Treatment of small abrasions Treatment of larger abrasions When to refer for specialist treatment.

The tribological behavior of a nickel-based single crystal superalloy treated by shot-peening has been investigated. Friction tests under three normal loads and temperatures were carried out based on the ball-on-disk configuration. results showed that coefficient friction (COF) wear rate shot-peened (SP-NBSC) at room temperature nearly 2 times 4 600 ?, respectively. However, there no significan...