595results about How to "Expand the detection range" patented technology

The invention discloses a method for carrying out deceleration and monomolecular capture on a nucleic acid molecule based on a solid-state nano hole. The method comprises the following steps of: adding the nucleic acid molecule to be measured into a nano hole sequencing device filled with an electrolyte, wherein the nano hole sequencing device comprises an electrolytic bath provided with an anode and a cathode, and a solid-state nano hole thin film for separating the anode of the electrolytic bath from the cathode of the electrolytic bath; placing the nucleic acid molecule in a positive chamber of the electrolytic bath; during measurement, introducing a pressure external field into the positive chamber as a driving external field for the perforation of the nucleic acid molecule; applying a voltage between the anode and the cathode as an electric field external field reverse to the pressure external field; and in a measurement process, enabling the acting force of the pressure external field, from which the nucleic acid molecule is suffered in the nano hole to be more than or approximately equal to electric field force according to a deceleration purpose or a capture purpose to be realized by the method. By using the method, on the premise that the signal-to-noise ratio of a measurement signal is not decreased, the speed at which a DNA (deoxyribonucleic acid) molecule penetrates through a nano hole device can be effectively decreased, and a perforation speed can be slowed down for above one order of magnitude.

The invention discloses a while-drilling borehole electromagnetic wave tomography advanced detection device and method. A detection probe is arranged in a detection drill pipe and used for drilling with a drilling rig; the detection probe automatically detects according to the working state of the drilling rig; during the detection, the stratum conditions of stratum geologies with different radii around a drill hole is detected through transmitting and receiving a group of electromagnetic waves with different frequencies; when the drill hole is finished and the detection probe exits in the drill hole, the data of the detection probe can be transmitted to a site host; the site host can compute the apparent resistivity of the stratums with different radii around the drill hole at each detection point and generate an apparent resistivity atlas with different radii around the whole drill hole depth; according to the apparent resistivity atlas, the geologic feature in a cylindrical space which takes the axis of the drill hole as center can be judged and whether the stratums have water-containing bodies or water-containing geologic structures can be analyzed and judged.