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Что (кто) такое dielectric imaging material - определение

ELECTRICALLY POORLY CONDUCTING OR NON-CONDUCTING, NON-METALLIC SUBSTANCE OF WHICH CHARGE CARRIERS ARE GENERALLY NOT FREE TO MOVE

Dielectric level; Paraelectricity; Dielectric dispersion; Dipolar polarization; Ionic polarization; Dielectric media; Dielectric medium; Dielectric relaxation; Debye relaxation; Debye equation; Dielectrics; Dialectric; Dielectric materials; Relaxation time of electrons; Dielectric relaxation as a chemical rate process; Dielectric relaxation asa chemical rate process; Paraelectric; Dielectric polarization; Dielectric properties; Dielectric response; Perfect dielectric; Dielectric material; Paraelectrics; Ionic polarisation

Найдено результатов: 1489

Dielectric

·noun Any substance or medium that transmits the electric force by a process different from conduction, as in the phenomena of induction; a nonconductor. separating a body electrified by induction, from the electrifying body.

Dielectric Polarization

A term due to Faraday. It expresses what he conceived to be the condition of a dielectric when its opposite faces are oppositely electrified. The molecules are supposed to be arranged by the electrification in a series of polar chains, possibly being originally in themselves seats of opposite polarities, or having such imparted to them by the electricities. The action is analogous to that of a magnet pole on a mass of soft iron, or on a pile of iron filings.

Dielectric

A non-conductor; a substance, the different parts of which may, after an electric disturbance, remain, without any process of readjustment, and for an indefinite period of time, at potentials differing to any extent (Daniell). There is no perfect dielectric. The term dielectric is generally only used when an insulator acts to permit induction to take place through it, like the glass of a Leyden jar.

Dielectric

In electromagnetism, a dielectric (or dielectric material or dielectric medium) is an electrical insulator that can be polarised by an applied electric field. When a dielectric material is placed in an electric field, electric charges do not flow through the material as they do in an electrical conductor, because they have no loosely bound, or free, electrons that may drift through the material, but instead they shift, only slightly, from their average equilibrium positions, causing dielectric polarisation.

https://en.wikipedia.org/wiki/Dielectric

Breast imaging

NEW QT BREAST IMAGING FDA APPROVED

Imaging of breasts; Imaging of the breast

In medicine, breast imaging is a sub-speciality of diagnostic radiology that involves imaging of the breasts for screening or diagnostic purposes. There are various methods of breast imaging using a variety of technologies as described in detail below.

https://en.wikipedia.org/wiki/Breast_imaging

JACC: Cardiovascular Imaging

JOURNAL

JACC. Cardiovascular Imaging; JACC: Cardiovasc Imaging; JACC: Cardiovasc. Imaging; JACC Cardiovasc Imaging; JACC Cardiovasc. Imaging; JACC Cardiovascular Imaging

JACC: Cardiovascular Imaging is a peer-reviewed scientific journal published by Elsevier for the American College of Cardiology since 2008. It currently has the highest impact factor among journals with a focus on cardiovascular imaging and it publishes original articles ranging from clinical studies to translational and basic research on novel imaging modalities with potential for future clinical usage.

https://en.wikipedia.org/wiki/JACC:_Cardiovascular_Imaging

MALDI imaging

Maldi imaging; MALDI MS Imaging; MALDI IMS

MALDI mass spectrometry imaging (MALDI-MSI) is the use of matrix-assisted laser desorption ionization as a mass spectrometry imaging technique in which the sample, often a thin tissue section, is moved in two dimensions while the mass spectrum is recorded. Advantages, like measuring the distribution of a large amount of analytes at one time without destroying the sample, make it a useful method in tissue-based study.

https://en.wikipedia.org/wiki/MALDI_imaging

Imaging biomarker

BIOLOGIC FEATURE OR BIOMARKER DETECTABLE IN AN IMAGE

Imaging biomarkers; Roentgen sign; CT biomarker; MRI biomaraker; Imaging marker; Predictive classifier; Predictive classifiers

An imaging biomarker is a biologic feature, or biomarker detectable in an image. In medicine, an imaging biomarker is a feature of an image relevant to a patient's diagnosis.

https://en.wikipedia.org/wiki/Imaging_biomarker

High-κ dielectric

DIELECTRIC WITH HIGH DIELECTRIC CONSTANT Κ

High-k; High-K; High-k Dielectric; High-k Metals; High-k dielectrics; High-k dielectric; High-K Metal Gate; HKMG; High-κ

The term high-κ dielectric refers to a material with a high dielectric constant (κ, kappa), as compared to silicon dioxide. High-κ dielectrics are used in semiconductor manufacturing processes where they are usually used to replace a silicon dioxide gate dielectric or another dielectric layer of a device.

https://en.wikipedia.org/wiki/High-κ_dielectric

Magnetic field imaging

NONINVASIVE AND CONTACT-FREE CARDIAC DIAGNOSTIC METHOD

Magnetic Field Imaging

Magnetic Field Imaging (MFI) is a non-invasive and side-effect-free cardiac diagnostic method. In more recent technology, magnetocardiography (MCG) has become the clinically predominant application for recording the heart's magnetic signals.

https://en.wikipedia.org/wiki/Magnetic_field_imaging

Википедия

Dielectric

In electromagnetism, a dielectric (or dielectric medium) is an electrical insulator that can be polarised by an applied electric field. When a dielectric material is placed in an electric field, electric charges do not flow through the material as they do in an electrical conductor, because they have no loosely bound, or free, electrons that may drift through the material, but instead they shift, only slightly, from their average equilibrium positions, causing dielectric polarisation. Because of dielectric polarisation, positive charges are displaced in the direction of the field and negative charges shift in the direction opposite to the field (for example, if the field is moving parallel to the positive x axis, the negative charges will shift in the negative x direction). This creates an internal electric field that reduces the overall field within the dielectric itself. If a dielectric is composed of weakly bonded molecules, those molecules not only become polarised, but also reorient so that their symmetry axes align to the field.

The study of dielectric properties concerns storage and dissipation of electric and magnetic energy in materials. Dielectrics are important for explaining various phenomena in electronics, optics, solid-state physics and cell biophysics.

https://en.wikipedia.org/wiki/Dielectric