In this study, the effect of limewater on strength assessments and percentage of water absorption of concrete incorporating ZnO 2 nanoparticles has been investigated. Portland cement was partially replaced by ZnO 2 nanoparticles with the average particle size of 15 nm and the specimens were cured in water and saturated limewater for specific ages. The results indicate that ZnO 2 nanoparticles u...

This paper presents the results of theoretical analyses conducted to investigate potential of various particle removal techniques. The purpose is to limit the extent of cross contamination caused by the small particles generated through in situ handling and processing of the simulated Martian rock. Since the same hardware would be used to process several rocks, the cross contamination is define...

OBJECTIVE The main objective of this study was to evaluate the wear characteristics of fiber-reinforced dental composites. Variables under investigation include the fiber weight percent added to the matrix as well as fiber length. METHODS Dental specimens with glass fiber content of 2, 5.1, 5.7, and 7.6 wt% with fiber length of either 1.5 or 3 mm, were prepared by mixing an activated dental r...

Fourteen Solanum cultivars (S. aculeatissimum, S. melongena, S. torvum, S. trilobatum, S. stramonifolium, S. mammosum and S. wrightii) and fourteen Capsicum cultivars (C. annuum, C. frutescens and C. minimum) cultivated in Thailand were determined their total phenolic contents in term of gallic acid (g) per 100 g of crude extract and per 100 g of dry herb powder. The total phenolic content of S...

A simple water extract of a flower was exploited as a natural reagent for acidity assay. The natural reagent from Gomphrena globosa was obtained by simple extraction and introduced into a simple lab-on-chip (LOC). The natural reagent adjusted to pH 9 was loaded into the vertical channel of the LOC, and then acetic acid standard/sample was injected into the horizonal channel of the LOC. The inje...

The purpose of this study was to determine whether the effects of dietary protein on sexual organ development were different in mice and rats kept under constant darkness. Four-week-old mice (ICR strain) and rats (F344 strain) were kept under constant darkness (D) or normal lighting (N; 12-h light/dark cycle) for 4 wk. The dietary protein level was 9% casein with the addition of 0.135% cystine ...

Cellulose nanoreinforcements have been used to improve mechanical and barrier properties of biopolymers, whose performance is usually poor when compared to those of synthetic polymers. Nanocomposite edible films have been developed by adding cellulose nanofibers (CNF) in different concentrations (up to 36 g/100 g) as nanoreinforcement to mango puree based edible films. The effect of CNF was stu...

BACKGROUND Age-related decreases in lean mass represent a serious health problem. We aimed to analyze the risks of rapid decreases in lean mass by age and sex in relatively young Korean adults during a 4-year follow-up study. METHODS A total of 65,856 non-diabetic participants (59.5% men, mean age 39.1 years) in a health screening program were subjected to bioimpedance body composition analys...