Abstract A polymer-enhanced bentonite-sand mixture has been widely used as a clay liner. This research focuses on the potential use of chitosan natural polymer mixed with bentonite liner base material. The is type calcium bentonite, which easily obtained in market. Meanwhile, produced from shrimp shell waste and also available process mixing percentage 2–6% was carried out using certain method,...

We previously reported the average 9.3-year (range, 5-13 years) results of 74 patients (83 hips) with porous-coated acetabular components that were placed without bulk bone graft at revision surgery. Since the previous report, 7 patients (7 hips) died before the minimum follow-up of 10 years, and 1 patient (1 hip) was lost to follow-up. We now report the average 15.6-year (range, 10-20 years) r...

A low profile prosthesis was designed using a flexible liner in conjunction with a rigid shell, with a toe extension. Thus far, two paediatric patients have been fitted with the device, at the University of Virginia Medical Center. One patient is a five year old with a Lisfranc level amputation and the other, a sixteen year old with a Chopart level amputation. Both patients have successfully wo...

Cementation of polyethylene (PE) liners into well-fixed metal shells has become a popular option during revision total hip arthroplasty (THA) particularly for older and frail patients. Although dramatic results were reported with dual-mobility acetabular components to manage hip instability during revision THA, no study evaluated the fixation strength of the cementation of dual-mobility compone...

In this work, the stress distribution along cylindrical composite pressure vessels with different dome geometries is investigated. The contours are generated through an integral method based on shell stresses. Here, influence of each contour at interface dome-cylinder evaluated. At first, formulation for curve generation presented and solved contours. An analytical approach calculation secondar...

Hybrid materials collected from organic and inorganic sources, which are traditionally used as brake lining materials, generally include fly ash, cashew shell powder, phenolic resins, aluminium wool, barites, lime carbon powder copper powder. The present research focuses on the specific effects produced by ash aims to provide useful indications for replacement of asbestos due health hazards cau...

Many women use panty liners between menstrual periods. The aim of this study was to investigate whether the use of such products might influence the vulva skin. Twelve healthy women were studied on four occasions with three different product constructions and on one occasion without products. Temperature, surface wetness and surface pH were measured on vulva skin. Mean skin temperature when the...