x ray examination - traduction vers arabe
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x ray examination - traduction vers arabe

WIKIMEDIA DISAMBIGUATION PAGE
X–Ray; X—ray

x ray examination      
تصوير شفاف بالأشعة السينية, فحص شامل بأشعة التحت سينية
x ray crystallography         
  • Model of the arrangement of water molecules in ice, revealing the [[hydrogen bond]]s (1) that hold the solid together.
  • The incoming beam (coming from upper left) causes each scatterer to re-radiate a small portion of its intensity as a spherical wave. If scatterers are arranged symmetrically with a separation ''d'', these spherical waves will be in sync (add constructively) only in directions where their path-length difference 2''d'' sin θ equals an integer multiple of the [[wavelength]] λ. In that case, part of the incoming beam is deflected by an angle 2θ, producing a ''reflection'' spot in the [[diffraction pattern]].
  • Three methods of preparing crystals, A: Hanging drop. B: Sitting drop. C: Microdialysis
  • tetrahedrally]] and held together by single [[covalent bond]]s, making it strong in all directions. By contrast, graphite is composed of stacked sheets. Within the sheet, the bonding is covalent and has hexagonal symmetry, but there are no covalent bonds between the sheets, making graphite easy to cleave into flakes.
  • access-date=2018-11-28}}</ref> The electron density is obtained from experimental data, and the ligand is modeled into this electron density.
  • Structure of a protein alpha helix, with stick-figures for the covalent bonding within electron density for the crystal structure at ultra-high-resolution (0.91&nbsp;Å). The density contours are in gray, the helix backbone in white, sidechains in cyan, O atoms in red, N atoms in blue, and hydrogen bonds as green dotted lines.<ref>From PDB file 2NRL, residues 17–32.</ref>
  • Animation showing the five motions possible with a four-circle kappa goniometer. The rotations about each of the four angles φ, κ, ω and 2θ leave the crystal within the X-ray beam, but change the crystal orientation. The detector (red box) can be slid closer or further away from the crystal, allowing higher resolution data to be taken (if closer) or better discernment of the Bragg peaks (if further away).
  • backbone]] from its N-terminus to its C-terminus.
  • Rocknest]]", October 17, 2012).<ref name="NASA-20121030" />
  • A protein crystal seen under a [[microscope]]. Crystals used in X-ray crystallography may be smaller than a millimeter across.
  • An X-ray diffraction pattern of a crystallized enzyme. The pattern of spots (''reflections'') and the relative strength of each spot (''intensities'') can be used to determine the structure of the enzyme.
  • Workflow for solving the structure of a molecule by X-ray crystallography.
TECHNIQUE USED FOR DETERMINING THE ATOMIC OR MOLECULAR STRUCTURE OF A CRYSTAL, IN WHICH THE ORDERED ATOMS CAUSE A BEAM OF INCIDENT X-RAYS TO DIFFRACT INTO SPECIFIC DIRECTIONS
X-ray structure; X-Ray Crystallography; X-Ray Diffraction Pattern; X ray diffraction; X-ray diffraction analysis; Crystallography, x-ray; Protein Crystallography; Protein crystallography; Xray crystallography; Xray Crystallography; X-ray Crystallography; X-ray crystalography; Crystallographic resolution; Laue diffraction; X-ray diffraction; History of X-ray crystallography; X ray crystallography; X-ray single-crystal analysis; X-ray crystal structure; Single-crystal X-ray crystallography; X-ray crystallographer; Laue method; X-ray diffraction crystallography; Single-crystal X-ray diffraction; X-ray structural analysis
‎ مَبْحَثُ تَصْويرِ البِلَّوراتِ بالأَشِعَّةِ السِّينِيَّة‎
x-ray diffraction         
  • Spectrum of various inelastic scattering processes that can be probed with inelastic X-ray scattering (IXS).
FAMILY OF NON-DESTRUCTIVE ANALYTICAL TECHNIQUES
X-ray scattering; X-Ray Diffraction; Resonant anomalous X-ray scattering; X-ray diffuse scattering; X-Ray diffraction; X-ray Diffraction; Inelastic X-ray scattering
انْعِراجُ الأشِعَّةِ السينِيَّة

Définition

X-ray crystallography
¦ noun the study of crystals and their structure by means of the diffraction of X-rays by the regularly spaced atoms of crystalline materials.

Wikipédia

X-ray (disambiguation)

X-rays are a form of electromagnetic radiation or radiographs: photographs made with X-rays.

X-ray or Xray may also refer to:

Exemples du corpus de texte pour x ray examination
1. French cardiologists and dentists looked at 131 patients referred to hospital for an X–ray examination of the arteries.
2. The government has invested a lot of time and money in his training, which has included postdoctoral courses in surgery, orthopedics, obstetrics and X–ray examination, he said.
3. The X–ray examination findings indicated a possiblity of lung infection, and the doctors decided on the bronchoscopy at a joint meeting of lung, hematology, intensive care and infection experts.
4. Defense attorneys and other trial–related visitors must walk through metal detectors and submit their bags to X–ray examination when they enter the prison but are not subject to physical searches or frisks, which are required for relatives or other personal visitors, tribunal officials said.
5. Study author Dr Benjamin Horne, professor of biomedical informatics at the University of Utah in Salt Lake City, said: "People who fast seem to receive a heart–protective benefit, and this appeared to also hold true in non–LDS (Latter Day Saints) people who fast as part of a health–conscious lifestyle." His team examined the records of patients who had had a coronary angiography – an X–ray examination of the blood vessels of the heart to look for blockages – between 1''4 and 2002.