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L-Ribulose 5-phosphate 4-epimerase catalyzes the epimerization of L-ribulose 5-phosphate to D-xylulose 5-phosphate by retro-aldol cleavage and subsequent aldol reaction.The proposed mechanism involves the abstraction of the proton from the hydroxyl group on C-4, followed by cleavage of the bond between C-3 and C-4 to give a metal-stabilized acetone enediolate and a glycolaldehyde phosphate ...
A sample of thorium. The thorium fuel cycle is a nuclear fuel cycle that uses an isotope of thorium, 232 Th, as the fertile material. In the reactor, 232 Th is transmuted into the fissile artificial uranium isotope 233 U which is the nuclear fuel. Unlike natural uranium, natural thorium contains only trace amounts of fissile material (such as ...
For example, ChemDraw supports this, as does ChemSketch and BIOVIA Draw (.emf is preferable for the latter). Draw the structure in your molecule editor, and save it as a Windows Metafile ( .wmf ), Enhanced Metafile ( .emf ), or Encapsulated Postscript ( .eps ).
This misconception, sometimes called the equal transit-time fallacy, is widespread among textbooks and non-technical reference books, and even appears in pilot training materials. In fact, the air moving over the top of an aerofoil generating lift is always moving much faster than the equal transit theory would imply, [ 439 ] as described in ...
A New York judge is set to decide this week whether President-elect Donald Trump's criminal conviction on charges involving hush money paid to a porn star should be overturned in light of the U.S ...
Health insurance industry officials remain uncharacteristically reserved in the aftermath of the fatal shooting of UnitedHealthcare CEO Brian Thompson on Dec. 4.. A week after the attack, the ...
Protactinium-231 arises naturally from the decay of natural uranium-235, and artificially in nuclear reactors by the reaction 232 Th + n → 231 Th + 2n and the subsequent beta decay of 231 Th. It was once thought to be able to support a nuclear chain reaction, which could in principle be used to build nuclear weapons ; the physicist Walter ...
Virgin Australia crew members were allegedly sexually assaulted and robbed in one of Fiji's nightclub areas on New Year's Day, the island country's Deputy Prime Minister Viliame Gavoka announced.