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7-Methylxanthine ( 7-MX ), also known as heteroxanthine, is an active metabolite of caffeine (1,3,7-trimethylxanthine) and theobromine (3,7-dimethylxanthine). [ 1][ 2] It is a non-selective antagonist of the adenosine receptors. [ 1][ 2] The compound may slow the progression of myopia (nearsightedness). [ 1][ 2] It is under investigation for ...
On-board diagnostics. Various views of a "MaxScan OE509" – a fairly typical onboard diagnostics (OBD) scanner, 2015. On-board diagnostics ( OBD) is a term referring to a vehicle's self-diagnostic and reporting capability. In the United States, this capability is a requirement to comply with federal emissions standards to detect failures that ...
Caffeine is a central nervous system (CNS) stimulant of the methylxanthine class. [ 9] It is mainly used as a eugeroic ( wakefulness promoter) or as a mild cognitive enhancer to increase alertness and attentional performance. [ 10][ 11] Caffeine acts by blocking binding of adenosine to the adenosine A 1 receptor, which enhances release of the ...
Automatic, the company behind an on-board diagnostics (OBD-II) dongle for cars, announced that it’s shutting down due to COVID-19. The company says customers can toss (or recycle) its adapters ...
Infobox references. 1,3,7-Trimethyluric acid, also referred to as trimethyluric acid and 8-oxy-caffeine, is a purine alkaloid that is produced in some plants and occurs as a minor metabolite of caffeine in humans. [ 1] The enzymes that metabolize caffeine into 1,3,7-trimethyluric acid in humans include CYP1A2, CYP2E1, CYP2C8, CYP2C9, and CYP3A4 ...
Naturally, the mark will try to use the fob again, and once again, Rolljam will jam the signal and steal the second code. But this time, Kamkar's device will re-transmit the first code and unlock ...
OBD-II PIDs (On-board diagnostics Parameter IDs) are codes used to request data from a vehicle, used as a diagnostic tool. SAE standard J1979 defines many OBD-II PIDs. All on-road vehicles and trucks sold in North America are required to support a subset of these codes, primarily for state mandated emissions inspections .
Using the O2 sensor signal, the ECU can operate the engine with an air–fuel ratio very close to 14.7:1, which is the ideal operating mixture for a three way catalyst to be effective. [2] Robert Bosch GmbH introduced the first automotive lambda sensor in 1976, [3] and it was first used by Volvo and Saab in that year. The sensors were ...