Aims The increasing interest in cortical bone strenght [1,2] led up to the investigation of the cortical tissue through X-ray microcomputed tomography (microCT). In the past histology has been the gold standard for the morphometric examination of bone specimens but this new method permits the non-destructive analyses of specimens in a faster way preserving the integrity of the samples [3] and t...

The objective of the present study was verify the influence of specimen dimensions on polymerization contraction stress of a self-cure dental composite and investigate the influence of confinement (expressed by the ratio between the bonded and unbonded area of the composite, or ‘C factor’) and volume of the specimen on stress values. The composite was inserted between the flat surfaces two glas...

Abstract A large-scale fatigue testing machine based on the rotating beam method in a four-point bending configuration was designed and built. With device, high-strength metal specimens with 32-mm gauge diameter 100-mm length can be tested at cyclic frequency of up to 48 Hz. In this work, particular attention paid evaluating spatial temporal uniformity loading within large specimen; methods for...

We have demonstrated that structures down to 150 nm can be visualized in X-ray projection images using a nano-focus X-ray source. Due to their unlimited depth of focus, they don a limit on the specimen size in the case of 3D tomographic imaging. Further simulation studies have shown that optimization of the detector response curve and switching from a reflective Xray target to a transmission ta...

An 83-year-old Japanese man was referred to our clinic with a 3-year history of multiple cutaneous lesions on both feet, which had slowly increased in size and number. A physical examination revealed scattered blue-red papules up to 5 mm in diameter on both feet, mainly on the soles. The largest domeshaped nodule (10 mm in diameter) was present on the ventral aspect of his right first toe. The ...

The influence of endoscopic forceps variables (size, design, and make) on biopsy specimen weight, depth, and diagnostic adequacy has been studied in vitro on normal human stomach, and in vivo at endoscopy in dog and in patients. Greater pressure during the biopsy procedure yielded significantly heavier, deeper, and histologically more acceptable specimens. Standard sized forceps (diameter 2.4 m...