In contrast, during laparoscopy, the surgeon can only manipulate tissue indirectly due to the interference of instruments, which are inserted through small incisions.
In the case of the hair samples for those samples with more than 0.1 ppm we were able to determine this ratio directly since the solutions had less interference and the instrument employed (octupole reaction cell) had a greater intrinsic sensitivity.
The marked drop in air mercury concentrations was most likely due to the ventilation, although other possibilities include measurement error during the initial sampling due to instrument interference (e.g., cat urine) or differences in measurement heights between the two sampling dates.
Very precise measurements may also be obtained by the use of light-wave interference, but the instruments that do so are referred to as interferometers.
Herschel's mission lasted until April 29 , 2013 when observations became impossible because it ran out of its supply of liquid helium coolant, which minimized the thermal interference that the instruments received from the rest of the telescope.
A small vibratory compactor was utilized to carry out the compaction work at narrow area with interference of the instruments installed.
In particular, feasibility studies from many different countries have all reported that restricted space in vehicles, uncontrolled light, interference from avionic instruments and vibration from the engine, that potentially can mar the examination, can all be overcome.
Magnetophysiology is the use of a superconducting quantum interference device (SQUID) based instrument to detect neuromagnetic fields evoked by electrical stimulation of brain tissue slices.
