In recent years there have been a number of attempts to study the cerebral blood flow. Kety and Schmidt' between 1945 and 1948 introduced a nitrous oxide method, and for the firet time measured quantitatively the minute volume of the brain. This was the first occasion on which the total oxygen consumption of the brain was measured through simultaneous determination of the arterial venous oxygen...

Thorium is a naturally occurring radioactive element that has been identified as potential alternative fuel for nuclear energy production. Additionally, thorium-based reactors have inherent safety features reduce the risk of accidents and proliferation. As result, there growing interest in development viable to fossil fuels. This paper looks at present status thorium technology, providing an ov...

A fast spectrum accelerator-driven system (ADS) may become a very versatile tool in the nuclear industry and allow a number of new applications. Such a system may serve as a means of transmuting large quantities of actinides and long lived fission products into short lived waste. Other possibilities, include the cross-progeny fuel cycle burning Pu in a thorium matrix and generating 233U which c...

it is expected that residential units may replace   traditional heat and power production systems with cogeneration ones. among the different cogeneration systems, fuel cell based systems are a suitable choice due to their high efficiency, high power density, low emission and low noise. in this paper, a cogeneration system based on solid oxide fuel cells is examined. the system, including the f...

Neutronics calculations have been performed of the MYRRHA ADS Reactor with a thorium-based fuel mixture, using simulation programs MCNPX (Waters, 2002) and Geant4 (Agostinelli, 2003). Thorium is often considered for systems, this first evaluation possibilities thorium based fuels reactor design which has developed in detail. It also extends application widely-used program to geometry thorium. A...

Determination of lanthanides by Inductively Coupled Plasma Mass Spectrometry (ICP-MS) using modified mathematical correction method has been studied. Normally, the ICP-MS analysis of middle and heavier lanthanides becomes difficult by severe spectroscopic overlap of M , MO or MOH ions from lighter lanthanides and Ba. A q q q correction method based on a single element oxide yield measurement, i...