magnetic gradient

magnetic gradient

An MRI term for the degree and direction of the linear rate of change of a magnetic field in space, which is one of three linear magnetisation waveforms superimposed on the main magnetic field at specific times within a pulse sequence to select the imaging region or provide necessary spatial localising information.
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v]), magnetic induction (B) and magnetic gradient (dB/ dL) can be used as a tool to control combustion.
The southwestern corner of this belt is occupied by an elongated negative closure with low frequency and low amplitude (blue colored); moreover, the NW-SE moderately positive magnetic belt, lies between the two negative anomalies and the moderately steep magnetic gradient delimits the previous southern negative magnetic belt and the northern positive magnetic belt.
They magnetized the beads in solution and formed a magnetic gradient to attract the antibody-coated beads to the surface in contact with any bound targets.
Subsequently, the external magnetic gradient enables and enhances the movement of the therapeutic-nanoparticle complex into the tumor environment where the drug is “activated,” resulting in a significant anti-tumor response.
The microbots will navigate towards the direction of an externally exerted magnetic gradient and its movement could potentially be tracked by using the differential microwave imaging (DMI) algorithm proposed in [11].
The potential for significantly higher velocities can be obtained with stronger magnetic fields and more precise shaping of the magnetic field along the axis for a greater magnetic gradient.
With the idea to measure the vertical magnetic gradient in different points on the zone of interest, two sensors separated a distance 1 m on a system of aluminum tubes for the easy handling on the land, were used (Fig.
For a more adequate spatial resolution, in order to detect a magnetic source in an airborne vertical magnetic gradient survey, it should be flown at line spacing equal to the distance between the sensor and the top of the magnetic source (Reid, 1980).
Unlike with lifting magnets, the purpose of magnetism for separating is not to anchor a load firmly, but to induce a motion into material (attraction for the ferrous and repulsion for the nonferrous), that has more to do with magnetic gradient and suitable frequency.
The researchers added two lasers to the setup, one atop j the other, such that their light would cross the magnetic gradient.
In MRI systems, this breakthrough technology improves image quality, enables precise control of the magnetic gradient in high-field-strength applications, and results in superior image resolution and contrast.
Map relief was similar to that of the horizontal magnetic gradient map (Figure 3b) where the area having a relatively low horizontal gradient correlated with the high resistivity area and the area having relatively high gradient correlated with the low resistivity area.