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X-ray absorption spectroscopy. X-ray absorption spectroscopy (XAS) is a widely used technique for determining the local geometric and/or electronic structure of matter. [1] The experiment is usually performed at synchrotron radiation facilities, which provide intense and tunable X-ray beams. Samples can be in the gas phase, solutions, or solids.
Small-angle X-ray scattering (SAXS) is a small-angle scattering technique by which nanoscale density differences in a sample can be quantified. This means that it can determine nanoparticle size distributions, resolve the size and shape of (monodisperse) macromolecules, determine pore sizes, characteristic distances of partially ordered materials, and much more.
A powder X-ray diffractometer in motion. X-ray crystallography is the experimental science of determining the atomic and molecular structure of a crystal, in which the crystalline structure causes a beam of incident X-rays to diffract in specific directions. By measuring the angles and intensities of the X-ray diffraction, a crystallographer ...
Donald Trump’s lawyers are asking a New York judge to lift the gag order that barred the former president from commenting about witnesses, jurors and others tied to the criminal case that led to ...
A "personal computer" version of Windows is considered to be a version that end-users or OEMs can install on personal computers, including desktop computers, laptops, and workstations. The first five versions of Windows– Windows 1.0, Windows 2.0, Windows 2.1, Windows 3.0, and Windows 3.1 –were all based on MS-DOS, and were aimed at both ...
At the graduation ceremony of New York University Abu Dhabi this May, a student wearing the traditional Palestinian black-and-white keffiyeh scarf shouted “Free Palestine!” as he crossed the ...
MARI YAMAGUCHI. June 1, 2024 at 8:10 AM. TOKYO (AP) — Japanese billionaire Yusaku Maezawa on Saturday canceled his planned flight around the moon on a SpaceX vehicle because of uncertainty about ...
Cobalt-60 ( 60 Co) is a synthetic radioactive isotope of cobalt with a half-life of 5.2714 years. [3] [4] : 39 It is produced artificially in nuclear reactors. Deliberate industrial production depends on neutron activation of bulk samples of the monoisotopic and mononuclidic cobalt isotope 59. Co. . [5]