wait. 1. 'wait'. You use the verb wait to say that someone remains in the same place, or avoids doing something, until something happens or someone arrives. Please wait here until he is ready to see you. She had been waiting to buy some stamps. 2. 'wait for'. You can say that someone waits for something or someone.
X-ray crystallography is a tool used for identifying the atomic and molecular structure of a crystal, in which the crystalline atoms cause a beam of incident X-rays to diffract into many specific directions.-ray crystallography is related to several other methods for determining atomic structures. Similar diffraction patterns can be produced by scattering electrons or neutrons, which are likewise interpreted by Fourier transformation.
Intravenous urography (also known as intravenous pyelography) is an X-ray procedure which is used to assess problems in the kidneys, ureters, bladder and urethra. These structures make up the urinary tract. The ureters are tubes which go from each kidney to the bladder. The urethra is the tube from the bladder that passes out urine. The urinary tract does not show up well on ordinary X-ray pictures. However, with intravenous urography a contrast dye is injected into a vein ('intravenous' injection).