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7502640 |
Positive contrast MRI of magnetically tagged cells, objects, tissues
Contrast agents incorporating super-paramagnetic iron-oxide (SPIO) nanoparticles have shown promise as a means to visualize labeled cells using MRI. Labeled cells cause significant signal dephasing...
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7439743 |
Method and apparatus for rock sample analysis using magnetic susceptibility
A method for determining one or more parameters of a rock sample, comprising the steps of measuring the magnetic susceptibility of the sample, and determining a value of the parameter using that...
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7405555 |
Systems and methods for measuring local magnetic susceptibility including one or more balancing elements with a magnetic core and a coil
A local magnetic susceptibility unit is adapted to measure the AC magnetic susceptibility of a surface region of a sample. The unit comprises a sensing element and one or more balancing elements...
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7394246 |
Superconductive quantum interference device (SQUID) system for measuring magnetic susceptibility of materials
A superconductive quantum interference device (SQUID) system is provided for measuring the alternating current (AC) magnetic susceptibility of material at a single frequency or a mixing frequency...
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7102346 |
Measuring cell for determining characteristics of a paramagnetic gas based on gas flow sweeping past a test element
A measuring cell for use in apparatus for the measurement of the magnetic characteristics of a gas comprises means ( 5 ) defining a chamber ( 3 ) in which a test element ( 11 ) is suspended such as...
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7040140 |
Device for suspension of a sample body
A device for suspension of a sample body which rotates in space about a rotation axis which is in a fixed position or is related to a fixed position, as a function of the intensity of a measurement...
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7026811 |
Methods and apparatus for eddy current inspection of metallic posts
An apparatus for inspecting a metallic post contoured in a single dimension for defects. The apparatus has a clamp having at least one jaw with a surface conforming to the contour to the metallic...
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6739179 |
Device for measuring the oxygen concentration in gases
A measuring device for determining the oxygen content in gases is described. The measuring device is disposed between two magnets that are positioned at a distance from one another. The measuring...
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6559635 |
Method for nondestructively determining aged deterioration accompanying change in brittleness of ferromagnetic struction materials
This invention is a method for nondestructively determining the deterioration of determining ferromagnetic materials by quantifying the change in brittleness with aging of the materials. This...
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6529008 |
Electromagnetic induction coil sensor
An electromagnetic induction coil includes a casing with high magnetic permeability with a magnet disposed within the casing. The magnet has a central hole. A core with high magnetic permeability...
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6477398 |
Resonant magnetic susceptibility imaging (ReMSI)
A three-dimensional magnetic susceptibility map of an object including a patient placed in a magnetic field is generated from a three-dimensional map of the resonant radio frequency (RF) magnetic...
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6263722 |
Magnetomechanical gas analyzer, in particular paramagnetic oxygen analyzer
A magnetomechanical gas analyzer such a paramagnetic oxygen analyzer which has a dumbbell which is rotatably suspended in the region of action of an inhomogeneous magnetic field and around which a...
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6246227 |
Sensor for measuring the magnetic characteristics of a gas
A gas measurement cell has a measurement element suspended to oscillate about a suspension axis in a magnetic field. A coil which oscillates with the element may have electrical signals applied to...
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6208253 |
Wireless monitoring of temperature
Temperature sensing through observable, temperature-dependent effects on an interrogating magnetic field is facilitating by a sensing module having, first, a signal element that interacts with the...
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6037167 |
Magnetic polynucleotide separation and analysis
An apparatus for analyzing a sample of a mixture of compounds selected from the group consisting of polynucleotides, proteins and fragments thereof attached to magnetized moieties which generate a...
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5936401 |
Device and process for measuring electrical properties at a plurality of locations on thin film superconductors
A device and process for determining the uniformity of a superconducting film's critical current density and transition temperature over a large area uses an array of ac coils placed in close...
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5523686 |
Probes for scanning SQUID magnetometers
Improved probes for miniaturized scanning magnetometers (scanning microscopes), particularly those utilizing superconducting quantum interference devices (SQUIDs), are provided by the invention....
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5506500 |
Magnetic property characterization system employing a single sensing coil arrangement to measure both AC susceptibility and DC magnetization
A coil arrangement having a primary and two balanced secondaries is used to measure ac susceptibility and, using sample movement, also to perform absolute dc moment measurements. Since the same...
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5491411 |
Method and apparatus for imaging microscopic spatial variations in small currents and magnetic fields
A magnetic flux microscope that measures the magnetic field about a sample surface. The apparatus uses a thin-film superconducting quantum interference device (SQUID) as the scanning device....
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5408178 |
Apparatus and method for imaging the structure of diamagnetic and paramagnetic objects
The surface or internal structure of diamagnetic and paramagnetic materials is imaged by measuring, preferably with a superconducting quantum interference device (SQUID) magnetometer, perturbations...
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5283524 |
AC magnetic susceptometer with odd harmonic measurement for analyzing superconductive magnetic materials
An improved AC susceptometer and methodology for its use which is particularly suitable for the characterization of the properties of superconducting materials. Added to the circuitry of a...
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5280240 |
Methodology using odd harmonic components of an induced magnetic field for analyzing superconducting magnetic materials and their properties
An improved AC susceptometer and methodology for its use which is particularly suitable for the characterization of the properties of superconducting materials. Added to the circuitry of a...
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5252920 |
Magnetic characteristics measuring apparatus with a balancing mechanism
A magnetic characteristics measuring apparatus attains high sensitivity measurement of magnetic characteristics of a specimen. A magnetic field is applied for a predetermined time to the specimen,...
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5073858 |
Magnetic susceptibility imaging (MSI)
Magnetic Susceptibility Imaging (MSI) comprises a generator to magnetize the tissue to be imaged, such as a first Helmholtz coil, which produces a high-strength external magnetic field to which...
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5004726 |
Apparatus and methodology for the non-contact testing of materials for superconductivity by detecting odd harmonics above a threshold
Apparatus and methodology for the rapid and inexpensive characterization of superconducting materials. The method and apparatus induces an alternating magnetic field in the sample to be tested. If...
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4969469 |
Paramagnetic dynamo electromotive force detector and imaging system incorporating same
An imaging system wherein the subject or patient to be examined is placed in a uniform constant magnetic field which is movable over the patient. A secondary magnetic field is generated by...
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4861990 |
Tunneling susceptometry
Methods and apparatus for determining susceptibility of a material to a field, such as magnetic susceptibility, provide an elastic support for a sample of that material, and an electric tunneling...
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4854163 |
Beltless core conveyor system for wellsite analysis
A core trough is driven by drive means along a path adjacent analysis means for preliminary analysis of sectioned core taken during stratigraphic exploration.
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4827217 |
Low noise cryogenic apparatus for making magnetic measurements
Apparatus for performing sensitive magnetic measurements using cryogenically cooled instrumentation, wherein the instrumentation is separated from the bubbles present in a cryogenic cooling fluid....
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4793355 |
Apparatus for process for making biomagnetic measurements
Apparatus for making biomagnetic measurements includes a biomagnetometer for measuring magnetic fields produced by the body and an electromagnetic location measurement and recording system for...
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4588947 |
Integrated miniature DC SQUID susceptometer for measuring properties of very small samples
A miniature, fully integrated susceptometer capable of measuring the magnetic properties of very small samples (<10 μm) is described which is fabricated by thin film lithography on a single...
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4507613 |
Method for identifying non-magnetic minerals in earth formations utilizing magnetic susceptibility measurements
A magnetic susceptibility log is run through an earth formation to identify the presence of any select non-magnetic minerals in association with magnetic minerals. The select non-magnetic mineral...
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4347622 |
Signature surveillance of nuclear fuel
Typical nuclear fuel material contains tramp ferromagnetic particles of random size and distribution. Also, selected amounts of paramagnetic or ferromagnetic material can be added at random or at...
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4277750 |
Induction probe for the measurement of magnetic susceptibility
The probe comprises two inductance windings mounted in opposition and conted to an a.c. generator, a measurement winding placed at right angles between the two inductance windings and a measurement...
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4243939 |
Determining paramagnetic additive content of a base paramagnetic material containing ferromagnetic impurity
Method and apparatus for the nondestructive determination of the amount and quantitative distribution of a paramagnetic additive such as gadolinia in nuclear fuel elements. Changes in paramagnetic...
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4134064 |
Method and apparatus for magnetically determining the Gd.sub.2 O.sub.3 content in UO.sub.2 fuel pellets while eliminating the effect of ferromagnetic impurities
A method and apparatus for magnetically determining the Gd 2 O 3 content in UO 2 fuel pellets is described. The alternating current susceptibility of fuel pellets within a zircalloy cladding is...
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3934192 |
Method of detection of ions in solution that are susceptible to an applied force field and apparatus therefor
A process wherein a solution is allowed to fall from the end of a capillary tube in the presence of a gradient field of an applied force field (magnetic or electric). If the fluid contains ions...
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3879658 |
Apparatus for measuring magnetic susceptibility
Two magnetic circuits are provided with two gaps penetrated normally by similar magnetic fields and having similar zones of inhomogeneities as effective on two test bodies which are interconnected...
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3826974 |
GAS TESTING APPARATUS OF THE MAGNETIC SUSCEPTIBILITY TYPE UTILIZING A GLASS COATED FILAMENT SUPPORT FUSED TO THE TEST BODY
Glass is used in the construction of gas testing apparatus of the magnetic susceptibility type for both protectively coating and mechanically connecting together parts of the apparatus exposed to...
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3815018 |
MAGNETIC GAS ANALYZER USING A GAS CHAMBER FOR IMPROVED GAS FLOW WITH MAGNETS EXTERNAL TO SAID CHAMBER
A test body is suspended in an inhomogeneous magnetic field in a chamber and exposed to a gas to be tested. The test piece comprises a pair of axially opposite arms movable about an axis of...
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3742344 |
APPARATUS FOR MEASURING THE DIFFERENCES IN MAGNETIC SUSCEPTIBILITIES OF GASES
Apparatus for measuring the difference in magnetic susceptibility of a sample gas and of a reference gas, the reference gas having particular, constant susceptibility; a magnetic circuit has at...
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3736500 |
LIQUID IDENTIFICATION USING MAGNETIC PARTICLES HAVING A PRESELECTED CURIE TEMPERATURE
Methods are disclosed for uniquely identifying liquids so that a particular liquid may be distinguished from other similar liquids. In one embodiment, an identification tag comprising sub-micron...
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3665297 |
APPARATUS FOR DETERMINING MAGNETIC SUSCEPTIBILITY IN A CONTROLLED CHEMICAL AND THERMAL ENVIRONMENT
An apparatus for determining the static magnetic susceptibility of dia- and paramagnetic compositions in a controlled chemical and thermal environment comprises an elongate dewar flask containing a...
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3665296 |
SUSCEPTIBILITY METER FOR FIELD USE FOR DETERMINING SUSCEPTIBILITY OF A ROCK OUTCROP
A method and apparatus measures susceptibility of a rock specimen by measuring the change of the equilibrium forces acting upon an electromagnet. The displacement of the magnet from equilibrium is...
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3651397 |
METHOD AND DEVICE FOR TESTING APPARATUS FOR SUSCEPTIBILITY TO MAGNETIC FIELD
Disclosed is improved apparatus and an improved method for use in testing the susceptibility of electrical apparatus to magnetic fields, wherein current is provided to an antenna for producing a...
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3614618 |
MAGNETIC SUSCEPTIBILITY TESTER
A testing apparatus for nondestructive testing of the magnetic characteristics of a portion of magnetic thin-film on a magnetic recording disc is disclosed. The recording disc is inserted into a...
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3568050 |
METHOD FOR MONITORING FERROMAGNETIC MATERIAL TEMPERATURE ABOVE THE CURIE POINT
A method and apparatus for automatically measuring and/or recording the temperature of a paramagnetically susceptible material, such as steel during hot rolling, whereby the material is passed...
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3534256 |
MAGNETIC SUSCEPTIBILITY MEASURING MEANS UTILIZING A BRIDGE CIRCUIT WITH ONE ARM HAVING A PAIR OF FIXED COILS AND A PAIR OF SAMPLE COILS
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3492566 |
THREE DIMENSIONAL MAGNETIC ANISOTROPIC SUSCEPTIBILITY METER
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3488577 |
ASYMMETRIC ORTHOGONAL COIL SUSCEPTIBILITY METER
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