Since conventional methods are insensitive at the low frequencies of these molecular transitions, the paramagnetic resonance method is being used instead.

A proton magnetic resonance study of polycrystalline Af as a function of magnetic field and temperature is presented.

The general theory of resonance shifts is used to derive a general expression for the second moment Af of a polycrystalline paramagnetic sample and is specialized to Af.

It is important to consider and experimentally verify this influence since quantitative nuclear resonance is becoming increasingly used in investigations of structure.

Field shifts were derived from the mean value of the resonance line, defined as the field about which the first moment is zero.

This equivalency is well explained by resonance forms.

It is estimated that acetamide is described by resonance structure A for 62 % and by B for 28 %

Also, mass spectrometry is categorized by approaches of mass analyzers: magnetic-sector, quadrupole mass analyzer, quadrupole ion trap, time-of-flight, Fourier transform ion cyclotron resonance, and so on.

If the speed of the fluttering is close to a harmonic of the control's movement, the resonance could break the control off completely.

The nitrogen atom of an ideal amide is sp < sup > 2 </ sup >- hybridized due to resonance, and sp < sup > 2 </ sup >- hybridized atoms have trigonal planar bond geometry.

As a pyramidal bond geometry is forced upon the nitrogen atom by the ring strain, the resonance of the amid bond is reduced, and the carbonyl becomes more ketone-like.

Nuclear magnetic resonance ( NMR ) is a technique by which external magnetic fields can be used to find resonance modes of individual electrons, thus giving information about the atomic, molecular and bond structure of their neighborhood.

Condensed matter physics also has important applications to Biophysics, for example, the experimental technique of magnetic resonance imaging, which is widely used in medical diagnosis.

The energy of the incident photons is absorbed by the pigments and funneled to the reaction centre of this complex through resonance energy transfer.

Although water is vital for life, the structure of this water in the cytosol is not well understood, mostly because methods such as nuclear magnetic resonance only give information on the average structure of water, and cannot measure local variations at the microscopic scale.

However, the use of advanced nuclear magnetic resonance methods to directly measure the mobility of water in living cells contradicts this idea, as it suggests that 85 % of cell water acts like that pure water, while the remainder is less mobile and probably bound to macromolecules.

The function of the vast majority of chlorophyll ( up to several hundred molecules per photosystem ) is to absorb light and transfer that light energy by resonance energy transfer to a specific chlorophyll pair in the reaction center of the photosystems.

Its importance in physics is the result of its being the solution to the differential equation describing forced resonance.

* Magnetic resonance imaging ( MRI ) MRI is a method of imaging objects that uses a strong magnetic field to detect the relaxation of protons that have been perturbed by a radio-frequency pulse.

The most commonly known applications of nuclear physics are nuclear power generation and nuclear weapons technology, but the research has provided application in many fields, including those in nuclear medicine and magnetic resonance imaging, ion implantation in materials engineering, and radiocarbon dating in geology and archaeology.

* Nuclear magnetic resonance ( NMR ) spectroscopy is the most commonly used technique, often permitting complete assignment of atom connectivity and even stereochemistry using correlation spectroscopy.

The most important example is benzene, the structure of which was formulated by Kekulé who first proposed the delocalization or resonance principle for explaining its structure.

In most cases, this results in an unstable interaction, in which the bodies exchange momentum and shift orbits until the resonance no longer exists.

The special case of 1: 1 resonance ( between bodies with similar orbital radii ) causes large Solar System bodies to eject most other bodies sharing their orbits ; this is part of the much more extensive process of clearing the neighbourhood, an effect that is used in the current definition of a planet.

The most remarkable resonance involving Io-Europa-Ganymede includes the following relation locking the orbital phase of the moons:

The 3: 2 resonance is the strongest and most stable among all resonances.

While George Romero denies he hired Duane Jones simply because he was black, reviewer Mark Deming notes that " the grim fate of Duane Jones, the sole heroic figure and only African-American, had added resonance with the assassinations of Martin Luther King, Jr. and Malcolm X fresh in the minds of most Americans ".

Objects with a 1: 2 resonance are called twotinos, and objects with a 2: 3 resonance are called plutinos, after their most prominent member, Pluto.

Thus, while most organic acids are deprotonated by the ionization of a polar hydrogen-to-oxygen bond, usually accompanied by some form of resonance stabilization ( resulting in a carboxylate ion ), uric acid is deprotonated at a nitrogen atom and uses a tautomeric keto / hydroxy group as an electron-withdrawing group to increase the pK < sub > 1 </ sub > value.

The primary method for singers to accomplish this is through the use of the Singer's Formant, which has been shown to be a resonance added to the normal resonances of the vocal tract above the frequency range of most instruments and so enables the singer's voice to carry better over musical accompaniment.

Though most spurious modes are typically some tens of kilohertz above the wanted series resonance their temperature coefficient will be different from the main mode and the spurious response may move through the main mode at certain temperatures.

Acoustic resonance is an important consideration for instrument builders, as most acoustic instruments use resonators, such as the strings and body of a violin, the length of tube in a flute, and the shape of, and tension on, a drum membrane.

In most cases, this results in an unstable interaction, in which the bodies exchange momentum and shift orbits until the resonance no longer exists.

The two most common imaging tests are ultrasound and magnetic resonance imaging ( MRI ).

Although denti-alveolar consonants are often described as dental, it is the rear-most point of contact that is most relevant, for this is what defines the maximum acoustic space of resonance and will give a consonant its characteristic sound.

This means that, unlike a flute or recorder, sound is created by resonance of the entire cavity and the placement of the holes on an ocarina is largely irrelevant – their size is the most important factor.

NMEs 10 / 10 review summarised the album as " a record that ventures deep into the heart of darkness of war itself and its resonance throughout England's past, present and future " and other reviews also noted its themes and writing style as " bloody and forceful ," mixing " ethereal form with brutal content ," and " her most powerful.

Through thorough clinical evaluation, via physical findings, detailed patient history, and advanced imaging techniques, such as angiogram, computerized tomography ( CT scan ), magnetic resonance imaging ( MRI ), or more rarely transillumination ( shining of bright light through the skull ) after birth are the most accurate diagnostic techniques.

Since this circuit lacked any frequency-selective elements besides the broad resonance of the antenna, it had little ability to reject unwanted stations, so all stations within a wide band of frequencies were heard in the earphone ( in practice the most powerful usually drowns out the others ).

In most cases, certain diagnostic tests such as magnetic resonance imaging ( MRI ) cannot be used on patients with cochlear implants without first removing the small internal magnet ( an outpatient procedure usually performed with a local anesthetic ), but some implants are now FDA approved for use with certain strengths of MRI machine.

The best documented and the most debated features of the Schumann resonance phenomenon are the diurnal variations of the background Schumann resonance power spectrum.

Magnetic resonance imaging ( MRI ) most often shows bilateral symmetric fluid-attenuated inversion recovery ( FLAIR ) hyperintense lesions of the dentate nuclei ( which is one of the deep cerebellar nuclei ), as well as symmetric lesions of the corpus callosum and basal ganglia.