Propositions of vapor compression cycles for microgravity applications have a long history. In contrast, experimental efforts and implemented are rare in general recent years even less than the 1980s 1990s. The paper shows results from cycle on parabolic flights. focus lies effects varying gravity forces condenser evaporator. Flow visualizations clearly showed change to an annular or slug-annul...

Mutation testing is widely considered as a high-end test coverage criterion due to the vast number of mutants it generates. Although many efforts have been made to reduce the computational cost of mutation testing, in practice, the scalability issue remains. In this paper, we explore whether we can use compression techniques to improve the efficiency of strong mutation based on weak mutation in...

BACKGROUND Compression fractures at adjacent mobile segments have been reported as adjacent segment disease under trauma in several studies. In this study, the occurrence of fractures at the adjacent segment was evaluated experimentally under trauma. METHODS Static testing of different fixation systems was performed to show their biomechanical performances. The ovine vertebrae fixed with rigi...

BACKGROUND Hereditary neuropathy with liability to pressure palsies (HNPP) is an autosomal-dominant painless peripheral neuropathy characterized by episodes of repeated focal pressure neuropathies at sites of entrapment/compression, with a considerable variability in the clinical course. Electrodiagnostic and genetic testing are important in the diagnostic evaluation of these patients. CASE P...

OBJECTIVE This study describes a method for inducing spinal cord injuries in dogs by using balloon catheters via laminectomy and the subsequent changes in the electrophysiological response. METHODS Female Beagle (Orient Bio, Seongnam, Korea) dogs weighing 10 kg at the time of injury were used. Under inhalation anesthesia, a posterior midline approach laminectomy was performed. A silicone ball...

INTRODUCTION Predominant collagen fiber orientation (CFO) can significantly influence the mechanical properties of cortical bone (e.g., Martin and Ishida, 1989; Martin and Broadman, 1993; Riggs et al., 1993). Previous studies have demonstrated that CFO is a strong predictor of tensile, compressive, or bending strength. Few of these studies, however, have examined the relative effects of CFO, m...

In this paper, the non-destructive testing methods are analyzed in view of their usability in evalulation of the interlocking paving blocks’ compressive strength. Ultrasonic pulse method and impact method (Schmidt impact hammers) were chosen for testing. Testing methodology and way of the results processing considering requests of the national and European standards are described there. In addi...