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  2. Chemical library - Wikipedia

    en.wikipedia.org/wiki/Chemical_library

    A carousel system to store assay plates used in high-throughput screening process. A chemical library or compound library is a collection of stored chemicals usually used ultimately in high-throughput screening or industrial manufacture.

  3. Space Shuttle thermal protection system - Wikipedia

    en.wikipedia.org/wiki/Space_Shuttle_thermal...

    HRSI was primarily designed to withstand transition from areas of extremely low temperature (the void of space, about −270 °C or −454 °F) to the high temperatures of re-entry (caused by interaction, mostly compression at the hypersonic shock, between the gases of the upper atmosphere & the hull of the Space Shuttle, typically around 1,600 ...

  4. Pan-assay interference compounds - Wikipedia

    en.wikipedia.org/wiki/Pan-assay_interference...

    Diagram depicting a representative pan-assay interference compound. The drug-like molecule specifically interacts with target B, but the PAINS-like compound non-specifically interacts with multiple targets. Pan-assay interference compounds (PAINS) are chemical compounds that often give false positive results in high-throughput screens. [1]

  5. Simplified Molecular Input Line Entry System - Wikipedia

    en.wikipedia.org/wiki/Simplified_Molecular_Input...

    The Simplified Molecular Input Line Entry System (SMILES) is a specification in the form of a line notation for describing the structure of chemical species using short ASCII strings. SMILES strings can be imported by most molecule editors for conversion back into two-dimensional drawings or three-dimensional models of the molecules.

  6. Open-chain compound - Wikipedia

    en.wikipedia.org/wiki/Open-chain_compound

    In chemistry, an open-chain compound (or open chain compound) or acyclic compound (Greek prefix α 'without' and κύκλος 'cycle') is a compound with a linear structure, rather than a cyclic one. [1] An open-chain compound having no side groups is called a straight-chain compound (also spelled as straight chain compound).

  7. Atmospheric entry - Wikipedia

    en.wikipedia.org/wiki/Atmospheric_entry

    Atmospheric entry (sometimes listed as V impact or V entry) is the movement of an object from outer space into and through the gases of an atmosphere of a planet, dwarf planet, or natural satellite. Atmospheric entry may be uncontrolled entry, as in the entry of astronomical objects , space debris , or bolides .

  8. Functional group - Wikipedia

    en.wikipedia.org/wiki/Functional_group

    In organic chemistry, a functional group is a substituent or moiety in a molecule that causes the molecule's characteristic chemical reactions.The same functional group will undergo the same or similar chemical reactions regardless of the rest of the molecule's composition.

  9. AS Val and VSS Vintorez - Wikipedia

    en.wikipedia.org/wiki/AS_Val_and_VSS_Vintorez

    A VSSM with a 20-round magazine. The AS Val uses a modified Kalashnikov action - a gas-operated rotating bolt combined with an integral suppressor and chambered for the 9×39mm SP-6 cartridge firing a heavy 250 grain bullet at subsonic speed. [9]