This paper aims to analyze the thermal performance of four different heat transfer fluids in a hot oil system located paraffin hydrotreatment and fractionation plant petroleum refinery. The software Petro-SIM? (KBC- -Yokogawa) was employed elaborate steady-state simulations intended compare fluid currently used (eutectic biphenyl diphenyl oxide) three proposed as substitutes: (namely n-C13 +) p...

Institut für Biologie V (Ökologie/Ökotoxikologie/Ökoehemie), Rheinisch-Westfälische Technische Hochschule, Worringer Weg 1, D-52056 Aachen, Bundesrepublik Deutschland Z. Naturforsch. 49c, 719-726 (1994); received August 1/September 7, 1994 Glycine max, Triticum aestivum, 3,4-Dichloroaniline, Metabolism, Translocation The roots of 13-day-old soybean (Glycine max L.) and 7-day-old wheat ( Triticu...

For dye-sensitized solar cells (DSSC), the fundamental process that determines the maximum short-circuit current is the absorption of light. In such devices, this is produced by the concurrent phenomena of light absorption by dye molecules and light trapping in the mesoporous, titania photoanode structure. The decoupling of these two phenomena is important for device characterization and the de...

Introduction: Average glandular dose calculation in mammography with Mo-Rh target-filter and dose calculation for different situations is accurate and fast. Material and Methods: In this research, first of all, x-ray spectra of a Mo target bombarded by a 28 keV electron beam with and without a Rh filter were calculated using the MCNP code. Then, we used the Sobol-Wu parameters to write a FORTRA...

We recently reported that air cell administration of penta-brominated diphenyl ether (penta-BDE; DE71) evokes biochemical and immunologic effects in chicken (Gallus gallus) embryos at very low doses, and impairs pipping (i.e., stage immediately prior to hatching) and hatching success at 1.8 lg g 1 egg (actual dose absorbed) in American kestrels (Falco sparverius). In the present study, absorpti...

UNLABELLED Absorbed-dose calculations provide a scientific basis for evaluating the biologic effects associated with administered radiopharmaceuticals. In cancer therapy, radiation dosimetry supports treatment planning, dose-response analyses, predictions of therapy effectiveness, and completeness of patient medical records. In this study, we evaluated the organ radiation absorbed doses from in...

In individuals with similar body stores of iron, the amount of iron absorbed from a single oral dose is not proportional to the amount of iron administered. Although a greater amount of iron is absorbed as the size of the oral dose increases, the percentage or fraction of the dose that is absorbed actually decreases (1-3). In addition, the amount of iron absorbed from a given dose is dependent ...