The compilation of the results obtained during the last 10 years on the retention behaviour of homologous series in reversed-phase liquid chromatography makes it possible to build a coherent model of molecular interactions for this type of sample. This model takes into account the effects of the chain length and the polarity of the sample molecule. It rationalizes the influence of the bonding d...

Global Positioning System (GPS)-based virtual fences offer the potential to improve the management of grazing animals. Prototype collar devices utilising patented virtual fencing algorithms were placed on six Angus heifers in a 6.15 hectare paddock. After a "no fence" period, sequential, shifting virtual fences restricted the animals to 40%, 60%, and 80% of the paddock area widthways and 50% le...

omplex nervous system patterning—usually assumed to have coevolved with advanced, centralized nervous systems— may have arisen before nerves consolidated into a central nerve chord, according to Christopher Lowe, John Gerhart (University of California, Berkeley, CA), Marc Kirschner (Harvard Medical School, Boston, MA), and colleagues. Their idea runs counter to the prevailing theory of dorsoven...

The numerical analysis and performance simulation of a sudden expansion with fence viewed as a diffuser are presented in this paper. SIMPLE algorithm is used to solve two-dimensional steady differential equations for conservation of mass and momentum. The Reynolds number is in the range of 20 to 100 and fence subtended angle (FSA) between 10 ̊ to 30 ̊. The location of fence from throat varies fro...

BACKGROUND Angle-stable locking plates have improved the surgical management of fractures. However, locking implants are costly and removal can be difficult. The aim of this in vitro study was to evaluate the biomechanical performance of a newly proposed crossed-screw concept ("Fence") utilizing conventional (non-locked) implants in comparison to conventional LC-DCP (limited contact dynamic com...

Background: Before treatment planning and dose delivery, quality assurance of multi-leaf collimator (MLC) has an important role in intensity-modulated radiation therapy (IMRT) due to the creation of multiple segments from optimization process.Objective: The purpose of this study is to assess the quality control of MLC leaves using EBT3 Gafchromic films.Material and Methods: Leaf Position accur...