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The transportation of oil and gas in Russia’s northern Arctic regions has seen significant growth recent years. However, the presence permafrost these areas can cause malfunctions main pipelines due to soil frost heaving. operational also often suffer from various defects their body surface. To mitigate issues, above-ground trunkline supports are utilized protect cryogenic processes. Neverthele...

Case Report A 68-year-old Hindoo male, who had been under treatment for years for hypertension, was seen in a state of left ventricular failure in February, 1953. On examination, he was found to be orthopnceic and pale, with a markedly displaced and heaving apex beat and a loud systolic murmur over the precordium. The blood pressure was 176/112 mm. His electrocardiogram (Fig. 1), showed left ve...