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Smoke-developed index (abbreviated SDI) is a measure of the concentration of smoke a material emits as it burns. [1] Like the Flame Spread Index, it is based on an arbitrary scale in which asbestos-cement board has a value of 0, and red oak wood has 100. The SDI is measured using a horizontal test specimen, according to the Steiner tunnel test ...
The test measures the rate at which a 0.45-micrometre filter is plugged when subjected to a constant water pressure of 206.8 kPa (30 psi). The SDI gives the percent drop per minute in the flow rate of the water through the filter, averaged over a period of time such as 15 minutes. [citation needed] [1]
The various serial digital interface standards all use (one or more) coaxial cables with BNC connectors, with a nominal impedance of 75 ohms. This is the same type of cable used in analog composite video setups, which potentially makes for easier "drop in" equipment upgrades (though may be necessary for long runs at the higher bitrates for older oxidising or lower grade of cable to replaced ...
SDI, DI, DIN, SI, SDA - on sub devices; various abbreviations for serial data in; connects to MOSI on main; SDO, DO, DOUT, SO - on main devices; various abbreviations for serial data out; connects to MOSI on sub; COPI, PICO for peripheral and controller, [36] [37] or COTI for controller and target [38] Main in, sub out (MISO)
The suspect in the New Orleans attack that killed 14 people on New Year's Day is believed to have acted alone in a "premeditated and evil act," the FBI has said. The latest information is counter ...
Millions of low-wage earners are getting a raise in 2025 as 21 states are slated to hike their minimum pay starting Jan. 1. State laws that index the minimum wage to inflation are behind 13 of the ...
No, Scrooge you!. A 29-year-old Florida housekeeper robbed and assaulted her 83-year-old employer on Christmas Eve when the elderly woman said she couldn’t afford to pay her once-trusted worker ...
The Strategic Defense Initiative (SDI), derisively nicknamed the Star Wars program, was a proposed missile defense system intended to protect the United States from attack by ballistic nuclear missiles. The program was announced in 1983, by President Ronald Reagan. [1]