Di(2-ethylhexyl)phthalate, commonly referred to as DEHP, is predominantly used as a plasticizer in the production of flexible polyvinyl chloride (PVC) products. At least 95% of DEHP produced is used as a plasticizer for PVC. PVC is made flexible by addition of plasticizers and is used in many common items such as wall coverings, tablecloths, floor tiles, furniture upholstery, shower curtains, g...

This paper presents theoretical modelling of the sound transmission loss through double-leaf lightweight partitions stiffened with periodically placed studs. First, by assuming that the effect of the studs can be replaced with elastic springs uniformly distributed between the sheathing panels, a simple smeared model is established. Second, periodic structure theory is used to develop a more acc...

BACKGROUND Chickenpox is rarely associated with posterior segment inflammation. We report on a case of unilateral chickenpox chorioretinitis with retinal exudates and periphlebitis. CASE PRESENTATION A 21-year-old healthy man, who suffered from chickenpox 2 weeks prior to symptom development, exhibited mild anterior chamber cells, vitreous opacity, sheathing of retinal veins, and yellow-white...

This paper presents the structural behaviour of an emerging prefabricated wall system made up of glass fibre reinforced rigid polyurethane foam (PUF) and Magnesium Oxide (MgO) board. Full-scale wall specimens were prepared and tested under transverse bending, compression and shear. The results of the experimental investigation showed that the behaviour of the composite walls is governed by the ...

The poor performance of wood light-frame construction (WLFC) during recent hurricanes disputed the efficacy of the wood light-frame building process in high wind environments. Deficiencies observed in the wake of Hurricane Andrew (1992) in particular suggest that solutions to the problem must consider human-based factors within the building process. The objective of this thesis is to develop an...

Stipules are leaf structures common in many groups of plants that can take a variety of forms. In Gentianales, interpetiolar stipules are considered a synapomorphy of Rubiaceae; however, some reports in the literature refer to their presence in other families. The goal of this study was to analyze the development of leaf primordia to investigate the possible presence of reduced or modified stip...

BACKGROUND Recent reports have established that eye changes occur in patients treated with vigabatrin. AIM To identify the eye changes associated with vigabatrin, based on a prospective study of children treated for seizures. METHODS Twenty nine children on vigabatrin (mainly as add on therapy) were followed up for 6.5 years. Ophthalmic examination was performed before starting treatment an...

Purpose To report a case of idiopathic retinal vasculitis, aneurysms and neuroretinitis (IRVAN) in a young woman. Observations A 21-year-old white female patient was referred to retina clinic with decreased vision in the left eye. On examination, best corrected visual acuity was 20/20 in the right eye and counting fingers in the left eye. Fundus examination revealed bilateral optic disc edema...

Bed bugs, Cimex lectularius L., hide in cracks and crevices in furniture and are difÞcult to control. The bed bug thermal death kinetics were examined to develop a heat treatment method to eliminate bed bug infestations in room contents. High temperatures caused temporary immobilization (knockdown) of bed bugs evenwith exposures that did not have lethal effects. Exposure of bed bug adults to 39...