In front of the LMC molecular hydrogen is found in absorption near 0 kms, being local disk gas, near +60 kms in an intermediate velocity cloud, and near +120 kms, being a high velocity halo cloud. The nature of the gas is discussed based on four Orfeus far UV spectra of LMC stars and including data from the ground and from the IUE satellite. The local gas is cool and, given a span of sight line...

ever since studies on uranium miners established the presence of a positive risk coefficient for the occurrence of lung cancer in miners exposed to elevated levels of 222rn and its progeny, there was a great upsurge of interest in the measurement of 222rn in the environment and considerable data is generated on the levels of 222rn in the environment across the worlds and is periodically reporte...

Investigation of radiation damage in protein crystals has progressed in several directions over the past couple of years. There have been improvements in the basic procedures such as calibration of the incident X-ray intensity and calculation of the dose likely to be deposited in a crystal of known size and composition with this intensity. There has been increased emphasis on using additional t...

27. Hefez A. The role of the press and the medical community in the epidemic of "mysterious gas poisoning" in the Jordan West Bank. Am J Psychiatry 142:833-837 (1985). 28. Faust H, Brilliant L. Is the diagnosis of "mass hysteria' an excuse for incomplete investigation of low-level environmental contamination? J Occup Med 23:22-26 (1981). 29. Donnell HD Jr, Bagby JR, Harmon RG, Crellin JR, Chask...

The ATLAS Transition Radiation Tracker (TRT) is the outermost of the three inner detector tracking subsystems and consists of ∼300000 thin-walled drift tubes (“straw tubes”) that are 4 mm in diameter. The TRT system provides ∼30 space points with ∼130 micron resolution for charged tracks with |η| < 2 and pT > 0.5 GeV/c. The TRT also provides electron identification capability by detecting trans...

Despite significant progress made over more than 15 years of research, structural biologists are still grappling with the issue of radiation damage suffered by macromolecular crystals which is induced by the resultant radiation chemistry occurring during X-ray diffraction experiments. Further insights into these effects and the possible mitigation strategies for use in both diffraction and SAXS...

background: indoor radon gas (222rn) has been recognized as one of the health hazards for human. air radon comes mainly from basement soil and construction materials. saghand region with rich uranium mines lies 180 km from yazd, so the indoor radon concentration can be high. yazd, with population of about 457000, is the biggest city near saghand, thus, indoor gamma background radiation of yazd ...

Radiation damage is one of the bottlenecks in the field of structural biology. Cryo-cooling of protein crystals provided a breakthrough in the 1980s and resulted in significant reductions in radiation damage. Other factors positively influencing the progression of damage include the application of radical scavengers and reductions in the experimental beam size. Here we study the impact on radia...

I review the properties of the interstellar medium in the Magellanic Clouds and Local Group dwarf galaxies. The more massive, star-forming galaxies show a complex, multi-phase ISM full of shells and holes ranging from very cold phases (a few 10 K) to extremely hot gas (> 10 K). In environments with high UV radiation fields the formation of molecular gas is suppressed, while in dwarfs with low U...

Anomalously high radiation counts were observed using several different Geiger-Mueller (GM) detectors as well as sodium iodide (NaI) detectors during electrolysis experiments with palladium cathodes in heavy water. These high radiation counts were often observed in codeposition experiments where palladium metal is deposited from a D2O solution onto a copper cathode in the presence of evolving d...