background: the purpose of this project was to derive the brachytherapy dosimetric functions described by american association of physicists in medicine (aapm) tg-43 u1 based on high dose rate 192i sources. materials and methods: the method utilized included both simulation of the designed polymethyl methacrylate (pmma) phantom using the monte carlo of mcnp4c and benchmarking of the simulation ...

In this report we describe the results of a study conducted to determine the rates of bacterial aerosol emission from the surfaces of the aeration tanks of the Metropolitan Water Reclamation District of Greater Chicago John E. Egan Water Reclamation Plant. This study was accomplished by conducting test runs in which Andersen six-stage viable samplers were used to collect bacterial aerosol sampl...

We study the electronic properties of graphene with a finite concentration of vacancies or other resonant scatterers by a straightforward lattice quantum Monte Carlo calculation. Taking into account a realistic long-range Coulomb interaction, we calculate the distribution of the spin density associated with midgap states and demonstrate antiferromagnetic ordering. An energy gap is open due to i...

Pd nanocubes between 8 and 50 nm in size were synthesized at the same concentration of Na2PdCl4 precursor by controlling the number of seeds formed in the nucleation stage. Increasing the concentration of FeCl3, an oxidative etchant for Pd, reduced the number of seeds and led to formation of larger Pd nanocubes. The larger nanocubes exhibited surface plasmon resonance peaks in the visible regio...

A simulated moving-bed adsorber (SMBA)consisting of only three or four columns packed with gel chromatographic materials was applied for the continuous desalting of bovine serum albumin (BSA) from ammoniumsulfate. It was shownexperimentally that the solutes could be continuously recovered in different streams at concentrations of over 50% of their feed concentrations. The recovery of BSAwas in ...

Although the teaching case report in the March 27 issue on a negative anion gap and elevated osmolar gap resulting from lithium overdose is interesting, I identified the following concern. In the third paragraph from the end of the report, the authors listed lactate as one of the potential causes of an elevated osmolar gap that they excluded. It is unfortunate that they perpetuated this common ...