Objective-  To evaluate kidney hemodynamic response including blood flow velocity in segmental arteries shortly after administration of various dose of saffron extract (10, 40 and 90 mg/kg).   Design- Technical assessment, experimental study.   Animals- 20 healthy male Sprague-Dawley rats.   Procedures- In this study, using a real-time pulsed doppler analysis, kidney hemodynamic response inc...

While flamelet-based progress variable models have matured to production-level in recent years for incompressible flows, little development toward compressible formulations of the flamelet model has ensued. For supersonic and hypersonic flows exhibiting combustion, an applicable flamelet-based combustion model must reflect the compressible nature of the flow, the tight coupling of the flow and ...

The concentration of dissolved fatty acids decreased in seawater as it flowed across a windward barrier reef at Grand Cayman. No comparable changes were observed over a leeward fringing reef although an increasingly enriched organic surface layer could be detected as distance from shore increased. across reefs (e.g. Johannes et al. 1972). Here I report observations on changes in dissolved fatty...

The main objective of this paper is to assess the effect of different viscosity-enhancing admixture (VEA) types and concentrations on deformability and stability of self-consolidating concrete (SCC). Two polysaccharide-based VEAs, one cellulose-based VEA, and a modified-startch VEA are used in this investigation. Regardless of polymer type, results showed that the incorporation of VEA leads to ...

In order to compare and optimize powders regarding flowability and to design powder handling equipment like silos, feeders, and flow promoting devices, it is necessary to know the mechanical properties – the so-called flow properties. In the present paper it is outlined which physical parameters describe the flow properties of a powder or a bulk solid, and how these parameters are determined ex...

In a stepwise development process, it is essential that system properties that have been already investigated in some phase need not be re-investigated in later phases. In formal developments, this corresponds to the requirement that properties are preserved under refinement. While safety and liveness properties are indeed preserved under most standard forms of refinement, it is well known that...