Patent application number | Description | Published |
20080204026 | NMR SPECTROMETER - An object of the present invention is to solve the bending of an NMR probe and a room temperature shim coil so that they can be positioned easily. In the NMR spectrometer including split-pair magnets and a cross bore, a high rigidity straight pipe to which an NMR probe and a room temperature shim coil are attached so as to make an integral object, is provided. The outer diameter of the straight pipe is smaller than the inner diameter of a horizontal bore into which the room temperature shim coil and the probe are inserted. After the room temperature shim coil and the NMR probe are attached to the straight pipe by bolts, respectively, the integral object is inserted into the horizontal bore (a room temperature space) of the NMR spectrometer. The room temperature shim coil and the probe may be attached to different straight pipes. | 08-28-2008 |
20080284470 | Direct Digital Synthesizer and Nuclear Magnetic Resonance Instrument Using the Same - A DDS (direct digital synthesizer) remarkably increased in the number of frequencies which can be output while maintaining the phase coherency, and an NMR instrument using such a DDS are provided. A DDS including phase accumulators and a phase-to-amplitude modulator is provided with a plurality of phase accumulators operating with fixed phase implements which are equal to powers of 2, a controller for outputting each bit of a frequency tuning word as control data, a plurality of switches for outputting an output of an associated one of the phase accumulators when an associated one of the control data supplied from the controller is 1 and outputting 0 when the associated one of the control data is 0, and an adder for adding up outputs of the switches. | 11-20-2008 |
20090066333 | NMR Sample Tube - An NMR sample tube for NMR measurement is provided. It includes a plug on both sides or one side of a sample to be measured, in an axial direction of the sample tube. The plug is adjusted to have magnetic susceptibility equal to or substantially equal to that of the sample. A whole shape of the plug and a sample space together is axisymmetric about an axis of the sample tube, and a surface of the plug not abutting the sample space bulges in a direction away from the sample space. | 03-12-2009 |
20090174406 | NMR Probe - An NMR probe is provided that prevents homogeneity of the static magnetic field from being reduced in a sensitive area of an RF coil used for measuring an NMR signal. The RF coil is wound around a bobbin, and mounted on the NMR probe. In the NMR probe, a substance having a magnetic susceptibility of the same polarity as that of the RF coil is disposed on a surface of the bobbin which is not contacted by the RF coil. Alternatively, the bobbin is formed with grooves, and the RF coil is wound around the grooves. The bulk susceptibility of the bobbin or RF coil winding is adjusted such that the difference between the product of the depth of the groove and bulk susceptibility of the bobbin and the product of winding thickness and bulk susceptibility of the RF coil winding is 5 percent or less. | 07-09-2009 |
20100156423 | Signal Transmitting and Receiving Circuit, a NMR Probe, and a Nuclear Magnetic Resonance Equipment - An object of the invention is to change over accurately the switch part between use condition and nonuse condition. A signal transmitting and receiving circuit | 06-24-2010 |
20110226950 | LINEAR MOTOR PAIR, MOVING STAGE AND ELECTRON MICROSCOPE - When using a moving magnet type linear motor pair for a moving stage, the magnetic field in a space defined by the linear motor pair varies greatly in association with the movement of movable bodies. For this reason, 4N sets (N is a natural number) of magnet pairs | 09-22-2011 |
20120305766 | LINEAR MOTOR, MOVABLE STAGE AND ELECTRON MICROSCOPE - It is an object to balance suppression of a leakage magnetic field and driving performance. In a linear motor including a stator including a first yoke having an open face and two rows of permanent magnets linearly arrayed inside the first yoke so that S-poles and N-poles are alternate and a movable element arranged between the two rows of permanent magnets and linearly moving, a second yoke is connected to an open end of the first yoke so as to cover the open end of the first yoke and the permanent magnets when viewed from the open face of the first yoke. | 12-06-2012 |
20130012392 | SUPERCONDUCTING SWITCH, SUPERCONDUCTING MAGNET AND MRI - A superconducting switch is provided in which the structural strength of the superconducting switch is kept, and thermal efficiency between a superconducting film and a heater is high when an ON state (superconducting state) and an OFF state (normal conducting state) of the superconducting switch are switched. The superconducting switch includes a substrate, a heater for generating heat by energization, a conductive film, and a MgB | 01-10-2013 |
20130313431 | ELECTRON MICROSCOPE - Provided is an electron microscope capable of enhancing a magnetic shield function even though the structure thereof has an objective tens that projects into a sample chamber space. The electron microscope includes: an objective lens ( | 11-28-2013 |