Knee meniscus tear A meniscus tear, damage to a piece of cartilage in the knee, causes pain and swelling. Cellulitis Cellulitis, a bacterial infection of the skin, causes red, tender skin that is usually swollen and warm. Insect bites Redness, swelling, pain, itching, bumps are common symptoms of insect bites.
|. International Standard Atmosphere (ISA) is a model used for the standardization of aircraft instruments. It was established, with tables of values over a range of altitudes, to provide a common reference for temperature and pressure. Flying in ISA-plus temperatures will have a negative impact on aircraft performance.
NIST uses a temperature of 20 Â°C (293.15 K, 68 Â°F) and an absolute pressure of 101.325 kPa (14.696 psi, 1 atm). The International Standard Metric Conditions for natural gas and similar fluids are 288.15 K (15.00 Â°C; 59.00 Â°F) and 101.325 kPa.owever, many technical publications (books, journals, advertisements for equipment and machinery) simply state standard conditions without specifying them, often leading to confusion and errors. Good practice is to always incorporate the reference conditions of temperature and pressure.