Purpose. To assess differences in dose distribution of a vertebral body injected with bone cement as calculated by radiation treatment planning system (RTPS) and actual dose distribution. Methods. We prepared two water-equivalent phantoms with cement, and the other two phantoms without cement. The bulk density of the bone cement was imported into RTPS to reduce error from high CT values. A dose...

An alternative supplementary cementitious material (SCM) based on quarry waste sludge, namely gravel wash mud (GWM) powder, is investigated for its performance in blended cement pastes and concretes. Varying mix designs of concrete mixtures at Ordinary Portland (OPC) substitution degrees from 10 wt% up to 30 by uncalcined calcined GWM powders were examined different curing ages using isothermal...

Shiramizu K; Lovric V; Leung AMD; +Walsh WR Surgical & Orthopaedic Research Laboratories, University of New South Wales, Sydney, Australia [email protected] INTRODUCTION Deep infection after total joint replacement is a severe complication, and the use of antibiotic-loaded bone cement as a joint spacer is an established and efficient treatment method to treat infected arthroplasties. When pre...

New fossil collections from two Callovian (Middle Jurassic) localities of the South Hungarian Villány Hills (Villány, Templom Hill Quarry and Siklós, Rózsa Quarry) include specimens rare ammonite genus Phlycticeras sporadic Oecoptychius. A review is given herein on previously published newly found specimens. Dimorphism, as well palaeogeographical distribution genera, also briefly discussed.

Study Design A biomechanical and radiographic study using vertebral analogues. Objectives Kyphoplasty and vertebroplasty are widely used techniques to alleviate pain in fractures secondary to osteoporosis. However, cement leakage toward vital structures like the spinal cord can be a major source of morbidity and even mortality. We define safe cement injection as the volume of the cement injecte...

Reclaimed mine soils (RMS) which develop on post-mining sites play significant role in Carbon sequestration in new ecosystems, especially in local range on areas disturbed by human activity. This study presents the potential for Carbon sequestration in RMS developing on 3 post surface mining areas in Poland (Central Europe) reforested with Scots pine (Pinus sylvestris L). Research was conducted...

The purpose of this study was to examine the effectiveness of a new glass polyphosphonate cement (Diamond) for orthodontic banding. Thirty-one subjects underwent in vivo testing to compare the failure rate of bands cemented using the test cement and bands cemented using a conventional glass polyalkenoate cement (Ketac-Cem) over a 6-month period at the beginning of active appliance therapy. In a...

BACKGROUND AND PURPOSE Adequate depth of cement penetration and cement mantle thickness is important for the durability of cemented cups. A flanged cup, as opposed to unflanged, has been suggested to give a more uniform cement mantle and superior cement pressurization, thus improving the depth of cement penetration. This hypothesis was tested experimentally. MATERIALS AND METHODS The same cup...

qareh qeshlaq marble quarry as one of the valuable resources of ornamental stones in west azarbaijan province formed through thermal carbonate springs while its mineral deposit thickness is limited in comparison with surface extension. in the present research, geological and blocky modeling of the marble deposit was carried out in order to develop a production planning for this quarry, identify...

In this research, a novel Hydraulically Bound Mixture (HBM) is successfully developed using waste minerals and industrial by-products to fully replace cement in road (base) foundation materials. HBM mixture that sets hardens by hydraulic reaction usually has compaction rolling. The materials used were reclaimed asphalt filler (RAF), quarry dust (QWD), plasterboard gypsum (PG) ground granulated ...