Previous studies have documented that decompression led to endothelial dysfunction with controversial results. This study aimed to clarify the relationship between endothelial dysfunction, bubble formation and decompression rate. Rats were subjected to simulated air dives with one of four decompression rates: one slow and three rapid. Bubble formation was detected ultrasonically following decom...

Success of multimedia applications demand on-line transmission of image data. This demands online compression/decompression of image data files. Spatial redundancy of an image data file are detected and removed with a simple and elegant scheme that can be easily implemented on a compression algorithm. Compression hardware having throughput that can match the capacity of high-speed data communic...

Edgebreaker is a simple scheme for compressing the triangle/vertex incidence graphs (sometimes called connectivity or topology) of three-dimensional triangle meshes. Edgebreaker improves upon the storage required by previously reported schemes, most of which can guarantee only an O(tlog(t)) storage cost for the incidence graph of a mesh of t triangles. Edgebreaker requires at most 2t bits for a...

The effect of decompression on the structure of Methanococcus jannaschii, an extremely thermophilic deep-sea methanogen, was studied in a novel high-pressure, high-temperature bioreactor. The cell envelope of M. jannaschii appeared to rupture upon rapid decompression (ca. 1 s) from 260 atm of hyperbaric pressure. When decompression from 260 atm was performed over 5 min, the proportion of ruptur...

OBJECTIVE To evaluate changes in corneal astigmatism in patients undergoing orbital decompression surgery. METHODS This retrospective, non randomized comparative study involved 42 eyes from 21 patients with thyroid ophthalmopathy who underwent orbital decompression surgery between September 2011 and September 2014. The 42 eyes were divided into three groups: control (9 eyes), two-wall decompr...

INTRODUCTION Dysbaric osteonecrosis is a rare illness in professional divers and compressed-air workers. The correlation between dysbaric osteonecrosis and previous decompression sickness with osteoarthromuscular pain (type 1 decompression sickness) remains a controversial subject. The probability for ischemic lesions detected with MRI to turn into osteonecrosis after decompression sickness is ...

100 cases of extradural spinal compression comprising 74% of all cases of spinal  compression were included. ver-tebral and extravertebral compression occurred with  equal frequency.  1. most of tjhe cases occurred between 20-50 years of age, with no significant dif'fe'rerlce1s between various causes, except in vertebral hemangioma which tend o affect the younger age groups (10-20). males were ...

The authors present the endoscopic intranasal orbital decompression, one of the surgical techniques used for orbital decompression. It can be applied for various indications. The most common indications are: maxillo-facial trauma, orbital haemorrhage, subperiorbital abscess as the complication of sinusitis, optic neuropathy, thyroidassociated orbitopathy (Graves’ orbitopathy). The authors concl...

According to the study on shape of plunge pool in horizontal swirl spillway tunnel, design scheme a with better energy dissipation effect is proposed. Based hydraulic physical model test, which includes atmospheric pressure and decompression tests, combined different pool, measurement results fluctuating pressure. Main frequency sidewall are analysed. The show that inlet section connected by gr...

BACKGROUND AND PURPOSE The value of core decrompression for treatment of osteonecrosis of the femoral head (ONFH) is unclear. We investigated by a literature review whether implantation of autologous bone marrow aspirate, containing high concentrations of pluripotent mesenchymal stem cells, into the core decompression track would improve the clinical and radiological results compared with the c...