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Electron micrograph of a MIL-101 crystal showing its supertetrahedra. Metal–organic frameworks ( MOFs) are a class of porous polymers consisting of metal clusters (also known as Secondary Building Units - SBUs) coordinated to organic ligands to form one-, two-, or three-dimensional structures.
A non-renewable resource (also called a finite resource) is a natural resource that cannot be readily replaced by natural means at a pace quick enough to keep up with consumption. [1] An example is carbon-based fossil fuels. The original organic matter, with the aid of heat and pressure, becomes a fuel such as oil or gas.
2020–present. Samuel Wellings, known professionally as Kim Dracula, is an Australian alternative/indie music artist from Hobart, Tasmania whose songs have achieved popularity on TikTok. [2] They [3] are known both for original work and for metal covers of songs not typically associated with the genre. They became popular on YouTube for their ...
The lists of black metal bands that have articles available on Wikipedia can be found at: List of black metal bands, 0–K, for bands beginning with 0–9 through K. List of black metal bands, L–Z, for bands beginning with L through Z. Category: Lists of black metal bands.
An alloy is a mixture of chemical elements, which forms an impure substance (admixture) that retains the characteristics of a metal. An alloy is distinct from an impure metal in that, with an alloy, the added elements are well controlled to produce desirable properties, while impure metals such as wrought iron are less controlled, but are often ...
Yttrium is also used in the production of electrodes, electrolytes, electronic filters, lasers, superconductors, various medical applications, and tracing various materials to enhance their properties. Yttrium has no known biological role. Exposure to yttrium compounds can cause lung disease in humans.
