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The multiple crystals on the right were grown from a sugar cube, while the one on the left was grown from a single seed taken from the one on the right. Red dye was added to the sugar solution before growing the large crystal, but was insoluble with the sugar in its solid state, and all but small traces of the dye was forced to precipitate out ...
Crystallographic image processing (CIP) is traditionally understood as being a set of key steps in the determination of the atomic structure of crystalline matter from high-resolution electron microscopy images obtained in a transmission electron microscope that is run in the parallel illumination mode.
Developing protein crystals is a difficult process influenced by many factors, including pH, temperature, ionic strength in the crystallization solution, and even gravity. [3] Once formed, these crystals can be used in structural biology to study the molecular structure of the protein, particularly for various industrial or medical purposes. [4 ...
Crystallized sugar. Crystals on the right were grown from a sugar cube, while the left from a single seed crystal taken from the right. Red dye was added to the solution when growing the larger crystal, but, insoluble with the solid sugar, all but small traces were forced to precipitate out as it grew.
Microscope image processing is a broad term that covers the use of digital image processing techniques to process, analyze and present images obtained from a microscope. Such processing is now commonplace in a number of diverse fields such as medicine , biological research , cancer research , drug testing , metallurgy , etc.
Under ideal conditions, this produces an "hourglass" shape of this point source in the third (axial) dimension. This shape is called the point spread function (PSF) of the microscope imaging system. Since any fluorescence image is made up of a large number of such small fluorescent light sources, the image is said to be "convolved by the point ...
Despite early successes such as the determination of the positions of hydrogen atoms in NH 4 Cl crystals by W. E. Laschkarew and I. D. Usykin in 1933, [19] boric acid by John M. Cowley in 1953 [20] and orthoboric acid by William Houlder Zachariasen in 1954, [21] electron diffraction for many years was a qualitative technique used to check ...
In geology, phase contrast is exploited to highlight differences between mineral crystals cut to a standardised thin section (usually 30 μm) and mounted under a light microscope. Crystalline materials are capable of exhibiting double refraction , in which light rays entering a crystal are split into two beams that may exhibit different ...