In order to investigate H2 rich blowout limit at different blockage ratios and flow velocities, a CFD software FLUENT was used to simulate H2 burning flow field in bluff-body burner, and the software CHEMKIN was adopted to analyze the sensitivity of each elementary reaction. Composition Probability Density Function C-PDF model was adopted to simulate H2 combustion field in turbulence flame. The...

OBJECTIVES This study aimed to evaluate subjective symptom changes in obstructive sleep apnoea hypopnea syndrome patients following nasal surgery, and to explore treatment efficacy in improving patient quality of life. METHODS Patients with nasal blockage accompanied by habitual snoring were stratified into four groups. Their subjective symptoms were evaluated before and after nasal surgery. ...

Various DNA sequences that interfere with transcription due to their unusual structural properties have been implicated in the regulation of gene expression and with genomic instability. An important example is sequences containing G-rich homopurine-homopyrimidine stretches, for which unusual transcriptional behavior is implicated in regulation of immunogenesis and in other processes such as ge...

., When designing a reflector Impulse Radiating Antenna, one must choose an appropriate feed impedance. Using the simplest approximations valid for high feed impedances, one finds that lower feed impedances are always prcfcrablc. However, low feed impedances imply thick feed arms, which incrcasc feed blockage for many designs, thus reducing the radiated field. Low feed impedances also lead to a...

CONCLUSION Blockage of the endolymphatic duct is a significant finding in Meniere's disease. The position of the utriculo-endolymphatic valve (UEV) and blockage of the ductus reuniens in the temporal bones were not found to be directly indicative of Meniere's disease. OBJECTIVE Comparison of blockage of the longitudinal flow of endolymph between ears affected by Meniere's disease and normal e...

hemangioma of the ovary is reported in a 66 years old woman. vascular tumors of the female genital tract are rare, especially those of the ovaiy. most cases are discovered incidentally. the case presented here was missed clinically.

Line-of-sight link blockages represent a key challenge for the reliability and latency of millimeter wave (mmWave) terahertz (THz) communication networks. To address this challenge, paper leverages mmWave LiDAR sensory data to provide awareness about environment proactively predict dynamic before they occur. This allows network make proactive decisions hand-off/beam switching, enhancing latency...

Cerebral vasospasm is one of the most severe complications of subarachnoid haemorrhage (SAH), leading to pathological changes in the vessel wall itself and in the nervous tissue, due to ischaemia of endothelial cells and neurones. Amongst the known substances inducing vasospasm, the most potent spasmogenic effect is exerted by endothelin-1 (ET1). The constriction of cerebral arteries and oblite...

background major vascular injury during a spinal surgery is a rare but most dreaded complication. case presentation a 39 years old female undergoing microscopic lumbar discectomy suddenly developed severe hypotension on table. the procedure was abandoned and the patient turned supine. it was diagnosed to be a major vessel tear and the patient was taken up for immediate successful vascular repai...

Peripheral artery disease (PAD) is caused by atherosclerosis, hardening and narrowing arteries over time due to buildup of fatty deposit in vascular bed called plaque. Severe blockage of an artery of the lower extremity markedly reduce blood flow, resulting in critical limb ischemia (CLI) manifested by a variety of clinical syndromes including rest pain in the feet or toes, ulcer and gangrene w...