Abstract This study aims to determine the effect of activator-binder ratio on water absorption ambient-cured geopolymer concrete. Class F fly ash from Mpanau power plant was used as precursor. raw material activated by a mixture sodium silicate and hydroxide solution, with an 0,45; 0,50; 0,55; 0,60. Five percent replacement slaked lime added achieve ambient curing. The test specimen for is made...

Along with high sensitivity in detecting gas, the response and recovery times of semiconductor gas sensors are of considerable importance for real life applications. In most cases, the recovery time is more than the response time. At the same time, water vapor present in the ambient, is chemisorbed on the tin oxide, SnO2 surface and the water molecules dissociate into hydroxyl species, which ac...

Ambient temperature is one of the most important environmental factors affecting physiological mechanisms and biochemical reactions of living organisms. Thus the effect of ambient temperature on HSPs and IGF-I gene expression levels in the liver and muscle tissues of Sparus aurata were investigated in this research. The levels of HSPs, and IGF-I gene expression of the liver and muscle of Sparus...

To determine the effects of CO(2)-enriched air and root restriction on photosynthetic capacity, we measured net photosynthetic rates of 1-year-old loblolly pine seedlings grown in 0.6-, 3.8- or 18.9-liter pots in ambient (360 micro mol mol(-1)) or 2x ambient CO(2) (720 micro mol mol(-1)) concentration for 23 weeks. We also measured needle carbohydrate concentration and water relations to determ...

We examined the degree of airway obstruction that developed in eight asthmatics who exercised while breathing air under four conditions: (a) ambient room temperature and water content; (b) body temperature and ambient water content; (c) ambient room temperature fully saturated; and (d) body temperature fully saturated. These test conditions were performed in random order. Multiple aspects of pu...

BACKGROUND/PURPOSE Water content is the most vital parameter governing the overall function of the epidermal stratum corneum (SC). Thus, knowledge of the in vivo absolute water content of the SC is of great interest. METHODS We have investigated a non-invasive method for the estimation of in vivo SC water content based on transepidermal water loss measurements combined with desorption studies...