A simple, reproducible, and rapid gas chromatographic method for short-chain fatty acid determination in human feces was developed. It involves direct injection of fecal supernatants into the gas chromatograph, without any pretreatment. Contamination of the gas chromatographic column with nonvolatile fecal material was prevented by the use of a glass liner in the injector. This liner, which act...

STATEMENT OF PROBLEM The use of soft liners as female receptacles for ball attachments retaining immediately loaded implant overdenture has been recommended to enhance osseointegration and provide a shock absorbing effect. However, which liner and which thickness is still unclear. PURPOSE The purpose of this finite element analysis (FEA) study was to evaluate the effect of a 2- and 4-mm thick...

A 75-year-old woman who suffered a left femoral neck fracture underwent a left total hip arthroplasty using a Stryker Trident (Kalamazoo, MI) hemispherical acetabular shell and Modular Dual Mobility (MDM) metal liner. Post-operative radiographs demonstrated canted seating of the liner. The patient was taken immediately back to the operating room where the acetabular liner appeared well seated s...

The use of an elevated-rim acetabular liner in total hip arthroplasty (THA) is widely accepted. We sought to determine quantitatively the amount of additional stability provided by the elevated-rim liner as compared to the standard non-elevated liner. Furthermore, the stability of the hip with a 32-mm femoral head was compared to the standard 28-mm head. Our results show that a 15° elevated-rim...

We use ROSAT HRI spatial data and ASCA spectral measurements for a sample of seven nearby, early type spiral galaxies, to address the question of whether a lowluminosity Active Galactic Nucleus (LLAGN) is present in galaxies that have a LINER 2 classification. The brightest discrete X-ray source in the ROSAT HRI observations is invariably found to be positionally coincident with the optical gal...

The authors report a case of early failure of a total hip arthroplasty with dissociation of the polyethylene liner of an S-ROM Oblong Cup*, which presented as a dislocation. Initial closed reduction of the dislocation was not possible. Open exploration of the hip revealed that the modular Poly Dial* polyethylene acetabular liner had become dislodged from the acetabular cup. The liner was revise...

We solve the liner shipping fleet repositioning problem (LSFRP), a key problem in the liner shipping industry, using a hybrid reactive tabu search and simulated annealing algorithm in combination with novel local search neighborhoods. Liner carriers reposition vessels between services in order to add, remove or modify services in their network. Repositioning vessels costs between hundreds of th...

To cite: Gkouliopoulou E, Agathangelidis F, Vampertzis T, et al. BMJ Case Rep Published online: [please include Day Month Year] doi:10.1136/bcr-2016218025 DESCRIPTION We present a case of a man aged 81 years who underwent a primary cementless total hip arthroplasty. Eight years after the index surgery, failure of the arthroplasty was revealed by the presence of the radiographic ‘cloud sign’ (fi...

Accurately measuring the in situ hydraulic conductivity (permeability) of a clay liner is a major factor in the construction of landfill containment systems. Laboratory and large-scale field test methods are often utilized on test pads constructed prior to placement of the production liner to determine the hydraulic conductivity of the clay. While these test methods provide reliable results, th...

A finite element (FE) model of the below-knee residual limb and prosthetic socket was created to investigate the effects of parameter variations on the interface stress distribution during static stance . This model was based upon geometric approximations of anthropometric residual limb geometry . The model was not specific to an individual with amputation, but could be scaled to approximate th...