The British synchrotron radiation source (SRS) at Daresbury, Cheshire was a pioneering achievement when it started work in 1981. It was the first accelerator ring to be built for the main purpose of harvesting the highly focused synchrotron radiation from electrons travelling round in circles at extremely high speeds. It became an invaluable facility for high-resolution X-ray crystallography an...

a 4.5 years old boy with left postero superior lateral neck mass admitted to shahid rahnemoon hospital in yazd. the mass had been noticed 2 years ago and there was no improvement after three times antibiotic therapy. on physical examination there were two masses on the neck. one of them was approximately 3×4 cm and the other was 2×2 cm. on of the masses was located in the left posterior auricul...

Grading of renal cell carcinoma (RCC) has prognostic significance, and there is recent consensus by the International Society of Urological Pathology (ISUP) that for clear cell and papillary RCC, grading should primarily be based on nucleolar prominence. Microscopic tumor necrosis also predicts outcome independent of tumor grading. This study was undertaken to assess whether the incorporation o...

There is growing scientific evidence of climate change at the Earth’s poles but also increasing worries that most people, living in more temperate latitudes, are failing to grasp the significance of these events. And it is not just scientists that are worried by this perception gap: many artists are also concerned about the apparent failure to grab public attention over these issues. A new exhi...

It is well established that multisensory integration is a functional characteristic of the superior colliculus that disambiguates external stimuli and therefore reduces the reaction times toward simple audiovisual targets in space. However, in a condition where a complex audiovisual stimulus is used, such as the optical flow in the presence of modulated audio signals, little is known about the ...

T he importance of closed-chest compression in maintaining at least a minimum of myocardial blood flow during cardiac arrest has been increasingly recognized. The adverse effect of interruptions of chest compressions on coronary perfusion pressure is immediate and important; Berg et al showed a 40% decrease in cumulative coronary perfusion after a 13-second pause in chest compression. The 2010 ...

Network coding in geometric space, a new research direction also known as S pace In f ormation Flow, is a promising research field which shows the superiority of network coding in space over routing in space. Present literatures proved that given six terminal nodes, network coding in space is strictly superior to routing in space in terms of single-source multicast in regular (5+1) model, in wh...