Abstract This study investigated the optimal water/binder (w/b) and aggregate/binder (a/b) ratios in producing a concrete paving block. The w/b a/b block were optimised using response surface methodology (RSM), considering performances of ultrasonic pulse velocity (UPV), flexural, compressive strengths. Regression modelling was conducted to represent relationships between UPV strength flexural ...

Introduction:The prevalence of atopic diseases has increased in recent decades dramatically. The most common aeroallergens in Northeastern Iran have not been fully defined. Define the most common aeroallergens in allergic patients based on the skin prick test (SPT) was aimed in this investigation.Materials and Methods:This cross-sectional study enrolled 1,006 allergic patients (aged 1–86 years)...

Lean Manufacturing concept is well described in the literature in the context of low-mix high-volume production. There are numerous case studies proving outstanding benefits of implementation Lean principles. Nowadays enterprises have to face the problem of high variety of products and dynamically changing demand. Lean tools and methods known from repetitive production do not always fit to high...