We describe x-ray diffraction and magnetic measurements of annealed MnPt and NiMn spin valves as a function of MnPt ~NiMn! film thickness. Thin films (&5 – 10 nm) are not chemically ordered and hence not antiferromagnetic, which explains the lack of exchange coupling in these films. With increasing thickness, the L10 chemical order develops ~through coexistence between fcc and L10 phases! and t...

A streamlined protocol is described that allows high sensitivity antigen detection by Western blotting in a single day. The choice of membrane blotting matrix, as well as blocking reagents, has been optimized in order to allow rapid development of the blot with chemiluminescent reagents. The entire process, from gel to blot to a permanent, hard copy image on x-ray film, can be accomplished with...

Twelve years ago, under the auspices of the United States Children's Bureau, Dr. Martha Eliot undertook the prevention of rickets in a district of New Haven, Connecticut, numbering 12,000 inhabitants. At once it became necessary to have more accurate knowledge than was available concerning the criteria for the diagnosis of early rickets in the x-ray films. Accordingly comparative x-ray and hist...

Special radiographic examination(RT) techniques for the common and special welded joints in pressure equipment are outlined, covering the tube-to-tube sheet joints of heat exchangers and the nozzle and branch joints of various vessels for which the examination procedures are more difficult. The characteristics and attention matters of mega-voltage radiography and the main points and difficultie...

Some unusual structures on the surface of metals and films (various x-ray films and nuclear emulsions ) caused by exposure to bombardment by low-energy ions in glow discharge plasma, in electrolysis and other low-energy processes (when energy of particles doesn’t exceed several keV) have been found. The mechanism and model of the strange tracks formations and explanation of their structure chan...

A single calibration film method was evaluated for use with intensity-modulated radiation therapy film quality assurance measurements. The single-film method has the potential advantages of exposure simplicity, less media consumption, and improved processor quality control. Potential disadvantages include cross contamination of film exposure, implementation effort to document delivered dose, an...

X-ray mammograms reveal abnormal tissue densities, while metabolic images identify regions of abnormal metabolism. Conventional nuclear medicine and radiologic breast images must be acquired at different times with different patient positions making coregistration difficult. Accurate coregistration of metabolic and x-ray images of the breast is likely to be important when acquiring information ...