abstract self compacting concrete (scc) is a new construction material in the world. the aim of this research is to construct self compacting concrete with high compressive strength using combination of nano silica and micro silica. for this purpose, nano silica, micro silica, portland cement type 2, superplasticizer (sp), and gravel and sand have been used. three different groups of samples wi...

background advocacy coalitions play an increasingly prominent role within the global health landscape, linking actors and institutions to attract political attention and resources. this paper examines how coalitions negotiate among themselves and exercise hidden forms of power to produce policy on the basis of their beliefs and strategic interests.   methods this paper examines the beliefs...

Neuropathic pain involves injury or alteration of the normal sensory and modulatory nervous systems to produce a set of symptoms that are often difficult to treat. Previous study indicates that saffron has anti-inflammatory properties that may be mediate by neurotransmitter system. In this study we determine the role of cannabinoids receptors in peripheral and central effects of Crocin on behav...

In this study, carbon nano-micro spheres with tightly controllable size, regularand perfect shape, high yields and narrow size distribution were prepared simply fromglucose and DI water as precursors using a hydrothermal method. By setting the initialconcentration of glucose solution and changing the hydrothermal process time at aconstant temperature of 160 °C, carbon spheres with various sizes...

We studied the effect of two social settings (collaborative versus competitive) on the visual and auditory expressions of uncertainty by children in two age groups (8 and 11). We conducted an experiment in which children played a quiz game in pairs. They either had to collaborate or compete with each other. We found that the Feeling-of-Knowing of eight-year-old children did not seem to be affec...

The instrument was designed to measure the O2 uptake of living material which consumes between o-oi and 5-0 yl. O2/ hr. Its accuracy is +o-ooi /u.1., and it has the following advantages over other micro-respirometers of similar sensitivity. (a) It is robust, easy to handle and is suitable for routine use. (b) The respirometer constant is independent of the gas volume of the reaction vessel. (c)...

Understanding the degree of price stickiness and the nature of price setting is necessary for analyzing the effects of monetary policy on economy. To the best of our knowledge, no comprehensive study has examined the degree of price stickiness in Iran yet. For this reason, we examine the basic features of retail price setting behavior using a large data set containing the micro data underly...

BACKGROUND Child screen viewing (SV) is positively associated with poor health indicators. Interventions addressing rule-based parenting practices may offer an effective means of limiting SV. This study examined associations between rule-based parenting practices (limit and collaborative rule setting) and SV in 6-8-year old children. METHODS An online survey of 735 mothers in 2011 assessed: t...