They are extremely sensitive to the breath of mammals, and when they detect the warm, humid and aromatic air that mammals exhale, the aphids instantly let go and drop off of the plant.
Health care providers at the University of Arizona Family Medicine clinic are trained to screen patients for them, and when they detect a problem, they send the patient to see a lawyer at their medical-legal partnership, the Tucson Family Advocacy Program.
The motorized dress has proximity sensors built in, and when they detect someone invading the wearer's personal space, they trigger a plastic scaffolding around the dress' hem to expand.
Two years ago, however, a team led by Michael Walker from the University of Auckland in New Zealand reported that captive trout could be conditioned to nudge a bar and receive food when they detected a magnetic field.
The fluorescence emission colors of Fiber-g-PyDAN2 and Fiber-g-RhBN2 were initially nonfluorescent, but they transformed into strong fluorescence emissions with blue and orange-red colors when they detected Cu2 + and Hg2 +/pH, respectively.
Less than a year ago, Swedish scientists caused widespread concern among health officials and the general public when they detected high concentrations of acrylamide--a potent carcinogen in lab animals--in bread, chips, and French fries.
Subjects were asked to fixate the cross in the center of the screen and press a button when they detected a happy face in the target stimulus.
Test drivers drove at the speed of 30 km/h (inner city speed and the speed limit of the street), and they pressed a button immediately when they detected the target.
When they detected certain sounds, the dolphins had to press a paddle.
General practitioners in Spain are assigned entire families (husband, wife and children), and consequently when they detect a case of IPV they usually have been in contact with the woman-and her partner-for a long time.
