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Magnetic resonance cholangiopancreatography (MRCP) is a medical imaging technique. It uses magnetic resonance imaging to visualize the biliary and pancreatic ducts non-invasively. This procedure can be used to determine whether gallstones are lodged in any of the ducts surrounding the gallbladder .
Connection table M V30 COUNTS 6 5 0 0 1 Counts line M V30 BEGIN ATOM M V30 1 C -0.6622 0.5342 0 0 CFG=2 M V30 2 C 0.6622 -0.3 0 0 M V30 3 C -0.7207 2.0817 0 0 MASS=13 M V30 4 N -1.8622 -0.3695 0 0 CHG=1 M V30 5 O 0.622 -1.8037 0 0 M V30 6 O 1.9464 0.4244 0 0 CHG=-1 M V30 END ATOM: Atom block
Fluoroscopy is used to look for blockages, or other lesions such as stones. [ 8 ] [ 9 ] When needed, the sphincters of the ampulla and bile ducts can be enlarged by a cut (sphincterotomy) with an electrified wire called a sphincterotome for access into either so that gallstones may be removed or other therapy performed.
A packed bed used to perform separation processes, such as absorption, stripping, and distillation is known as a packed column. [1] Columns used in certain types of chromatography consisting of a tube filled with packing material can also be called packed columns and their structure has similarities to packed beds.
In chemistry, the mass concentration ρ i (or γ i) is defined as the mass of a constituent m i divided by the volume of the mixture V. [1]= For a pure chemical the mass concentration equals its density (mass divided by volume); thus the mass concentration of a component in a mixture can be called the density of a component in a mixture.
Dirac is one of the most successful general-purpose quantum chemistry packages that provides accurate description of relativistic effects in molecules, using the Dirac equation as its starting point. [1] The program is available in source code form, at no cost, to the academic community.
Other applications are the virtual screening of ligands in drug discovery, in silico mutagenesis studies [2] [3] and antibody affinity maturation. [4] For the study of reactions it is often necessary to involve a quantum-mechanical (QM) representation of the reaction center because the molecular mechanics (MM) force fields used for FEP ...
Conversion and its related terms yield and selectivity are important terms in chemical reaction engineering.They are described as ratios of how much of a reactant has reacted (X — conversion, normally between zero and one), how much of a desired product was formed (Y — yield, normally also between zero and one) and how much desired product was formed in ratio to the undesired product(s) (S ...