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Reversed-phase liquid chromatography (RP-LC) is a mode of liquid chromatography in which non-polar stationary phase and polar mobile phases are used for the separation of organic compounds. [ 1 ] [ 2 ] [ 3 ] The vast majority of separations and analyses using high-performance liquid chromatography (HPLC) in recent years are done using the ...
In numismatics, the abbreviation obv. is used for obverse, [1] while ℞, [1])([2] and rev. [3] are used for reverse. Vexillologists use the symbols "normal" for the obverse and "reverse" for the reverse. The "two-sided" , "mirror" , and "equal" symbols are further used to describe the relationship between the obverse and reverse sides of a flag.
The major difference between Japanese and Dutch reverse auctions is in putting suppliers in two different position. While in Dutch reverse auctions suppliers opt-in at intended price point and thus end the auction immediately, in reverse Japanese auctions suppliers explicitly opt-out of a given market at their intended price point.
A and B can react to form C and D or, in the reverse reaction, C and D can react to form A and B. This is distinct from a reversible process in thermodynamics. Weak acids and bases undergo reversible reactions. For example, carbonic acid: H 2 CO 3 (l) + H 2 O (l) ⇌ HCO 3 − (aq) + H 3 O + (aq).
In some cases, it may be important to distinguish between reversible and quasistatic processes. Reversible processes are always quasistatic, but the converse is not always true. [2] For example, an infinitesimal compression of a gas in a cylinder where there is friction between the piston and the cylinder is a quasistatic, but not reversible ...
If faced with the proposition of owning one share of company stock for $50 or two shares for $25, you might wonder what difference it makes. In a reverse stock split, the amount of shares ...
The Tupolev Tu-4, a Soviet bomber built by reverse engineering captured Boeing B-29 Superfortresses. Reverse engineering (also known as backwards engineering or back engineering) is a process or method through which one attempts to understand through deductive reasoning how a previously made device, process, system, or piece of software accomplishes a task with very little (if any) insight ...
Thrust reversal, also called reverse thrust, is the temporary diversion of an aircraft engine's thrust for it to act against the forward travel of the aircraft, providing deceleration. Thrust reverser systems are featured on many jet aircraft to help slow down just after touch-down, reducing wear on the brakes and enabling shorter landing ...