Loading...
  • atoms
  • These properties are fundamentally the same as those used in the more familiar magnetic resonance imaging (MRI), but the molecular applications use a somewhat different approach, appropriate to the change of scale from millimeters (of interest to radiologists) to nanometers (bonded atoms are typically a fraction of a nanometer apart), a factor of a million. (wikipedia.org)
  • This type of spectroscopy determines the physical and chemical properties of atoms or the molecules in which they are contained. (wikipedia.org)
  • These experiments are often used to assign specific resonance signals to specific atoms in an isotopically-enriched protein. (wikipedia.org)
  • constants
  • Whereas, measurements of diffusion constants (diffusion ordered spectroscopy or DOSY) are done the sample stationary and spinning off, and flow cells can be used for online analysis of process flows. (wikipedia.org)
  • typically
  • Techniques such as transmission electron microscopy (TEM), scanning electron microscopy (SEM), atomic force microscopy (AFM), wide angle X-ray scattering (WAXS), small incidence angle X-ray diffraction and solid state 13C cross-polarization magic angle spinning (CP/MAS), nuclear magnetic resonance (NMR) and spectroscopy have been used to characterize typically dried nanocellulose morphology. (wikipedia.org)
  • Urine
  • Pyruvate dehydrogenase deficiency can be diagnosed via the following methods: Blood test (Lactate and pyruvate levels) Urine analysis Magnetic resonance spectroscopy MRI The differential diagnosis of pyruvate dehydrogenase deficiency can consist of either D-Lactic acidosis or abnormalities associated with gluconeogenesis. (wikipedia.org)
  • Subjects who meet screening criteria will return for visit 2, which consists of a urine collection, 12-hour fasting blood draw, dual-energy X-ray absorptiometry (DXA) for body composition, magnetic resonance spectroscopy analysis of the liver, and resting echocardiogram for analysis of heart structure and function. (clinicaltrials.gov)
  • Pigments excreted in urine are partially absorbed by urate sediments ( sedimentum latrerium ), which consists of cell debris and sedimented urinary components formed when the acidified urine is stored below room temperature. (wikipedia.org)
  • Imaging
  • An integrated spectral-scanning nuclear magnetic resonance imaging (MRI) transceiver has been implemented in a 130nm SiGe BiCMOS process. (rice.edu)
  • The Margrite Davis and Ralph Mills Magnetic Resonance Imaging and Spectroscopy Center is home to instrumentation, research laboratories and support services for molecular, cellular, animal and human spectroscopic imaging, aiding the study of disease processes and evaluation of responses to treatment. (wikipedia.org)
  • EEG used to be a first-line method of diagnosis for tumors, stroke and other focal brain disorders, but this use has decreased with the advent of high-resolution anatomical imaging techniques such as magnetic resonance imaging (MRI) and computed tomography (CT). (wikipedia.org)
  • This relationship is especially important in magnetic resonance imaging where the sum of interscan delay d 1 {\displaystyle d_{1}} and acquisition time a t {\displaystyle a_{t}} is often short relative to the signal's T 1 {\displaystyle T_{1}} value. (wikipedia.org)
  • frequencies
  • The ions are trapped in a Penning trap (a magnetic field with electric trapping plates), where they are excited (at their resonant cyclotron frequencies) to a larger cyclotron radius by an oscillating electric field orthogonal to the magnetic field. (wikipedia.org)
  • motifs
  • The fold consists of a pair of EF hand motifs, the second of which binds tightly to calcium. (sciencemag.org)
  • They consist of two zinc-binding motifs that resemble GATA-like Znf's, however the residues holding the zinc atom(s) are variable, involving Cys, His, Asp or Glu residues. (embl-heidelberg.de)
  • electron
  • For example, the source for 57Fe consists of 57Co, which decays by electron capture to an excited state of 57Fe, which in turn decays to a ground state emitting a gamma-ray of the appropriate energy. (wikipedia.org)
  • spectrum
  • The spectrum of benzene consists of a single peak at 7.2 ppm due to the diamagnetic ring current. (wikipedia.org)
  • The exact value of chemical shift depends on molecular structure and the solvent, temperature, magnetic field in which the spectrum is being recorded and other neighboring functional groups. (wikipedia.org)
  • methods
  • There are also more complex 3D and 4D methods and a variety of methods designed to suppress or amplify particular types of resonances. (wikipedia.org)
  • Signal
  • The resulting signal is called a free induction decay (FID), transient or interferogram that consists of a superposition of sine waves. (wikipedia.org)
  • atom
  • However such resonances can be identified by the disappearance of a peak when reacted with D2O, as deuterium will replace a protium atom. (wikipedia.org)
  • functional
  • This allows identifying the neighboring substituents of the observed functional group, allowing unambiguous identification of the resonances. (wikipedia.org)
  • analysis
  • In addition, magnetic resonance spectroscopy analysis of the liver and resting echocardiogram analysis of the heart will be performed to determine if there have been any changes in liver fat or heart function during the 12-week intervention. (clinicaltrials.gov)
  • The facility is divided into three core facilities: Macromolecular Structure Analysis, NMR Spectroscopy, and Transgenic and Genetically Defined Mouse facilities. (wikipedia.org)
  • large
  • Modern NMR spectrometers have a very strong, large and expensive liquid helium -cooled superconducting magnet, because resolution directly depends on magnetic field strength. (wikipedia.org)
  • sample
  • In its most common form, Mössbauer absorption spectroscopy, a solid sample is exposed to a beam of gamma radiation, and a detector measures the intensity of the beam transmitted through the sample. (wikipedia.org)
  • structure
  • The solution structure of monomeric NAP-2 has been investigated by two-dimensional 1H-n.m.r. spectroscopy. (biochemj.org)
  • The NAP-2 monomer consists of a triple-stranded anti-parallel beta-sheet arranged in a 'Greek key' and a C-terminal helix (residues 59-70) and is very similar to that found in the n.m.r. solution conformation of dimeric interleukin-8 and the crystal structure of tetrameric bovine platelet factor-4. (biochemj.org)
  • applications
  • The system is designed specifically for small-scale surface MRI diagnostics applications where creating low (below 1T) and inhomogeneous magnetic field generation is more practical. (rice.edu)
  • Around 30,000 square feet of space is devoted to research and expansion of biomedical applications in magnetic resonance. (wikipedia.org)
  • particle
  • The existence of resonances and other features of Mie scattering make it a particularly useful formalism when using scattered light to measure particle size. (wikipedia.org)
  • The former consists of tubules and graphene sheets protruding from its surface like petals of a dahlia, while the latter is composed of tubules developing inside the particle itself. (wikipedia.org)
  • structures
  • The artwork consists of four 4.5-metre (15 ft) vertical structures incorporating the five platonic forms - icosahedron, octahedron, star tetrahedron, hexahedron and dodecahedron - and painted with Rennie's traditional pattern. (wikipedia.org)
  • composition
  • Neon in the upper atmosphere only consists of 20 parts per million by mass, which is about a tenth as abundant as in the Sun. Helium is also depleted to about 80% of the Sun's helium composition. (wikipedia.org)
  • Based on spectroscopy, Saturn is thought to be similar in composition to Jupiter, but the other giant planets Uranus and Neptune have relatively less hydrogen and helium and relatively more ices and are thus now termed ice giants. (wikipedia.org)
  • In near infrared spectroscopy, the TOF method is used to measure the media-dependent optical pathlength over a range of optical wavelengths, from which composition and properties of the media can be analyzed. (wikipedia.org)
  • The chemical structure and composition of polyanhydrides can be determined by H1NMR spectroscopy. (wikipedia.org)
  • unit
  • Jolesz initiated and led an academic industrial partnership of clinical and technical colleagues in designing and developing the first magnetic resonance image-guided unit for image-guided brain tumor resection that was installed at The Brigham and Women's Hospital in 1993. (wikipedia.org)
  • origin
  • NYC SCA839882012-08-01T00:00:00Furniture download optimal transport theory for a Public SchoolThe Weeks Lerman889202013-01-01T00:00:00Furniture text of Office Furniture for three resonance origin of 12 stories for the Borough of Manhattan Community College. (kar-men.com)
  • fields
  • The formalism allows the calculation of the electric and magnetic fields inside and outside a spherical object and is generally used to calculate either how much light is scattered, the total optical cross section, or where it goes, the form factor. (wikipedia.org)
  • level
  • of the largest manufacturers of Electro Magnets, Permanent Magnetic Separators, be in the same level or the billets get unstuck with small jerks of crane rail joints. (jrworcester.org)
  • different
  • Type III proteins have multiple transmembrane domains in a single polypeptide, while type IV consists of several different polypeptides assembled together in a channel through the membrane. (wikipedia.org)
  • elements
  • 5. The magnetic resonance coil as set forth in claim 4, wherein the one or more radio frequency shield portions comprise:at least one of a shield flange portion and a shield endcap portion arranged at each end of the parallel elongate conductive elements to shield a proximate one of the end rings. (patentsencyclopedia.com)
  • brain
  • Visually, the interior of the brain consists of areas of so-called grey matter, with a dark color, separated by areas of white matter, with a lighter color. (wikipedia.org)
  • channel
  • The channel itself is a homotetramer (consists of four identical M2 units), where the units are helices stabilized by two disulfide bonds, and is activated by low pH. (wikipedia.org)