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Finally we have come to the most difficult question of all : " When will the detection and unambiguous attribution of human-induced climate change occur ? PC Evans is an adept investigator and she currently has a detection rate of 83 per cent . The test that will be released has a detection sensitivity similar to the 2 other tests and shows a concordance rate of nearly 100 % with these existing tests . This side had a detection range from 1 to 10 keV . That is to say , if a participant had a detection or recognition distance of 183 m ( 600 ft ) , the threshold value was determined by linear interpolation between the 152.5-m ( 500-ft ) and 244-m ( 800-ft ) photometric measurements . I did n't think we had the detection devices to know whether they were following for sure , and that became a source of argument with several of the professors at California Institute of Technology who were supporting what Stevenson was advocating . The tire tread with the FIR also had a detection distance difference of 3 percent from Phase II to the current research . The recent emergence of liquid chromatography / mass spectrometry ( LC / MS ) techniques capable of testing for CAP in complex matrices has a detection limit at or below one part per billion5 . The proof is in what happens next , " said Bruce Schneier , chief technical officer for Counterpane Internet Security , a managed security monitoring company that has a detection response service that effectively is an alarm system for corporate networks . Yet certainly it was not meant as caricature ; for his heart , almost even to idolatry , was in his reverence of Dr. Dr. Burney was often surprised that this kind of farcical similitude escaped the notice of the Doctor ; but attributed his missing it to a high superiority over any such suspicion , as much as to his near-sightedness ; for fully was Dr. Burney persuaded , that had any detection of such imitation taken place , Dr. Johnson , who generally treated Mr. Boswell as a schoolboy , whom , without the smallest ceremony , he pardoned or rebuked , alternately , would so indignantly have been provoked , as to have instantaneously inflicted upon him some mark of his displeasure . The method had a detection limit of 3.7 nanoM with a linear range to 37 microM . The hydrogen levels in the tanks are currently being monitored with an electrochemical sensor , but this instrument has a detection limit of 7 parts per thousand and a response time of several minutes . Of the 175 not detected results , 122 had a detection limit greater than the 0.57 minimum concentration .