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Maya pottery. Actun Tunichil Muknal (the Cave of the Crystal Sepulchre), also known locally as ATM, is a cave in Belize, near San Ignacio, Cayo District, notable as a Maya archaeological site that includes skeletons, ceramics, and stoneware.
Crystallization is the process by which solids form, where the atoms or molecules are highly organized into a structure known as a crystal.Some ways by which crystals form are precipitating from a solution, freezing, or more rarely deposition directly from a gas.
Experiments have provided many examples of the complexities that control which mineral is crystallized first as the melt cools down past the liquidus. One example concerns crystallization of melts that form mafic and ultramafic rocks.
Crystallization affects optical, mechanical, thermal and chemical properties of the polymer. The degree of crystallinity is estimated by different analytical methods and it typically ranges between 10 and 80%, with crystallized polymers often called "semi-crystalline". The properties of semi-crystalline polymers are determined not only by the ...
The U.S. Preventive Services Task Force released a draft recommendation advising against using vitamin D to prevent falls and fractures in people over 60. Pharmacist Katy Dubinsky weighs in.
With many viruses now on the rise, it can be hard to know which illness you have and how to handle it. A doctor helps you to decide.
A disgraced Missouri teacher is scheduled to enter pleas next month to 19 charges alleging she paid her underage students for sex with cash, alcohol and marijuana and then attempted to intimidate ...
Combined with certain metallic species, amorphous films can crystallize in a process known as metal-induced crystallization (MIC). The effect was discovered in 1969, when amorphous germanium (a-Ge) films crystallized at surprisingly low temperatures when in contact with Al, Ag, Cu, or Sn. [1]