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The Voynich manuscript is an illustrated codex, hand-written in an unknown script referred to as 'Voynichese.'. [18] The vellum on which it is written has been carbon-dated to the early 15th century (1404–1438). Stylistic analysis has indicated the manuscript may have been composed in Italy during the Italian Renaissance.
Critical green inclusions, also known as green neutrophilic inclusions and informally, death crystals or crystals of death, [1] [2] are amorphous blue-green cytoplasmic inclusions found in neutrophils and occasionally in monocytes. They appear brightly coloured and refractile when stained with Wright-Giemsa stain.
Charcot–Leyden crystals are often seen pathologically in patients with bronchial asthma. History. Friedrich Albert von Zenker was the first to notice these crystals, doing so in 1851, after which they were described jointly by Jean-Martin Charcot and Charles-Philippe Robin in 1853, then in 1872 by Ernst Viktor von Leyden. See also
It seeks to contain information on all inorganic crystal structures published since 1913, including pure elements, minerals, metals, and intermetallic compounds (with atomic coordinates). ICSD contains over 210,000 entries as of December 2020 [update] and is updated twice a year.
A crystallographic database is a database specifically designed to store information about the structure of molecules and crystals. Crystals are solids having, in all three dimensions of space, a regularly repeating arrangement of atoms, ions, or molecules. They are characterized by symmetry, morphology, and directionally dependent physical ...
The distortion free energy density is a quantity that describes the increase in the free energy density of a liquid crystal caused by distortions from its uniformly aligned configuration. It also commonly goes by the name Frank free energy density named after Frederick Charles Frank.
Free, MIT: Fortran 90: Unknown: Unknown: No: Unknown: Unknown CP2K: Free, GPL: Fortran 95: Yes: Yes: Yes, CUDA and OpenCL: Unknown: Unknown CPMD: Academic: Fortran: Yes: Yes: No: Unknown: Unknown CRYSTAL: Academic (UK), Commercial (IT) Fortran: Yes: Yes: No: Unknown: Unknown Dalton: Free, LGPL: Fortran: Yes: Yes, LSDalton ...
Specimen from California, US; size: 5.9 cm × 3.8 cm × 3.8 cm (2.3 in × 1.5 in × 1.5 in). Cristobalite ( / krɪˈstoʊbəˌlaɪt /) is a mineral polymorph of silica that is formed at very high temperatures. It has the same chemical formula as quartz, SiO 2, but a distinct crystal structure. Both quartz and cristobalite are polymorphs with ...
The Crystallography Open Database (COD) is a database of crystal structures. Unlike similar crystallography databases, the database is entirely open-access, with registered users able to contribute published and unpublished structures of small molecules and small to medium-sized unit cell crystals to the database.
It is formed by precipitation from hydrothermal fluids, and contains by mass: 16.3% Tl, 47.3% Cu, 2.9% Ag, and 33.6% Se. [2] Crookesite is an opaque, bluish grey to pink toned brown metallic mineral crystallizing in the tetragonal system. It has a Mohs hardness of 2.5 to 3 and a specific gravity of 6.9.