We have presented the kinetic study of the very initial growth stages of an ultra thin film (40Å-150Å) of Ag sputter-deposited on Si(001) substrate containing native oxide using grazing incidence x-ray reflectivity (GIXR) technique and Atomic Force Microscopy (AFM). We observe that the film consists of mounds with the presence of voids. The thickness 'd xray ' and the packing fraction 'η' of th...

We report the first observation of the smectic C–smectic I (C–I) critical point by Xray diffraction studies on a binary system. This is in confirmity with the theoretical idea of Nelson and Halperin that coupling to the molecular tilt should induce hexatic order even in the C phase and as such both C and I (a tilted hexatic phase) should have the same symmetry. The results provide evidence in s...

We report the results of experimental and numerical-simulation studies of shielded radiography using narrowband MeVenergy X-rays from a compact all-laser-driven inverse-Compton-scattering X-ray light source. This recently developed Xray light source is based on a laser-wakefield accelerator with ultra-high-field gradient (GeV/cm). We demonstrate experimentally high-quality radiographic imaging ...

Predicting pathologic fractures of long bones caused by metastatic disease continues to be a challenging clinical problem. We assessed the ability of noninvasive imaging and computational techniques to predict the strength of bones with osteolytic lesions. A murine model of induced tumor osteolysis to the distal femur was used as a model system resulting in a wide range of lesion sizes. Microco...

A 26-years-old man was admitted to our hospital emergency room for a traumatic pneumothorax four days after a fight. He had dyspnea, decreased blood pressure, tachycardia and tachypnea. Chest Xray showed a left pneumothorax with midline structures desviation and he was treated by intercostal drainage. 30 minutes later he started again with dyspnea and oxygen saturation decreased despite the add...

We compile a blue AGN sample from SDSS and investigate the ratio of hard Xray to bolometric luminosity in dependence on Eddington ratio and black hole mass. Our sample comprises 240 radio-quiet Seyfert 1 galaxies and QSOs. We find that the fraction of hard X-ray luminosity (log(L2−10kev/Lbol)) decreases with the increase of Eddington ratio. We also find that the fraction of hard X-ray luminosit...