Modifications of the fiber cross-section allow designing surface properties in yarn and fabric. However, the effect of profiled fibers on yarn properties has not been well documented yet. hi this article, the influence of different filament cross-section geometry on fiber
properties was studied. PET (polyethylene terepfithalate) filament yarns having two different crosssectional shaped filaments, circular and cruciform, were manufactured by melt spinning. Differences in tensile properties of filament yarn and as well as of individual filament depending on the cross-sectional type were studied and revealed. More over, thermal and therniomechaiiical properties of filament yarn of both the cross-sectioos were studied and revealed by DSC and TMA method, respectively. (C) 2008 Wiley Periodicals, inc. J Appl Polym Sci 111: 805-812, 2009″
“Phytochemical investigation of the methylenechloride/methanol Selleck GSK923295 extract of the aerial parts of Stachys aegyptiaca afforded a new neoclerodane-type diterpene with a new side chain 1, in addition to two known diterpenes
2 and 3 and a known flavonoid glycoside 4. The structures of the compounds were determined by comprehensive NMR studies including DEPT, COSY, Liproxstatin-1 inhibitor NOESY, HMQC, HMBC and HR-MS.”
“Study Design. We performed a retrospective study of spinal roentgenograms of a large cohort of patients suffering from osteogenesis imperfecta.
Objective. To determine the prevalence
of vertebral pars defects (spondylolysis) in patients with osteogenesis imperfecta.
Summary of Background Data. Patients suffering from osteogenesis imperfecta are known to be prone to pathologic fractures. Pathologic fractures due to microtraumas, repetitive activities, and posture acting together on a congenitally weakened pars interarticularis may lead to vertebral pars defects. The prevalence of vertebral pars defects in patients with osteogenesis selleck compound imperfecta has never been studied before to our knowledge.
Methods. We performed a retrospective study of posterior-anterior and lateral, standing, roentgenograms of the spine of patients with osteogenesis imperfecta for the occurrence of vertebral pars interarticularis defects.
Results. The patients (5.3%) in our series showed vertebral pars defects, this is not significantly different from the prevalence of vertebral pars defects in the general population.
Conclusion. 5.3% of the patients with osteogenesis imperfecta showed vertebral pars defects, this does not differ significantly from the occurrence in the general population.”
“A bifunctional reactive surfactant containing a polymerizable methacrylate group and a benzophenone group, [2-(methacryloyloxy)ethyl](4-benzoylbenzyl)dimethylammonium bromide (MDAB), was synthesized to modify montmorillortite (MMT) for the preparation of nanocomposites via photoinduced polymerization.