Search results
Results from the WOW.Com Content Network
1,4-Butanediol, also called Butane-1,4-diol (other names include 1,4-B, BD, BDO and 1,4-BD), [5] is a primary alcohol and an organic compound with the formula HOCH 2 CH 2 CH 2 CH 2 OH. . It is a colorless viscous liquid first synthesized in 1890 via acidic hydrolysis of N,N'-dinitro-1,4-butanediamine by Dutch chemist Pieter Johannes Dekkers, who called it "tetramethylene glyco
The resulting melting curves are then analyzed to detect genetic differences based on the melting temperatures of the DNA fragments. The technique has been further advanced by its application on digital microfluidics platforms, which can facilitate the analysis of single-nucleotide polymorphisms (SNPs) with high accuracy and sensitivity. [ 10 ]
The most important chain extenders are ethylene glycol, 1,4-butanediol (1,4-BDO or BDO), 1,6-hexanediol, cyclohexane dimethanol and hydroquinone bis(2-hydroxyethyl) ether (HQEE). All of these glycols form polyurethanes that phase separate well and form well defined hard segment domains, and are melt processable.
The melting temperature, T m, occurs when half of the double-stranded nucleic acid has dissociated. If no additional nucleic acids are present, then [A], [B], and [AB] will be equal, and equal to half the initial concentration of double-stranded nucleic acid, [AB] initial. This gives an expression for the melting point of a nucleic acid duplex of
The fragments then formed Bennu and other "rubble pile" asteroids - loose amalgamations of rocky material rather than solid objects. Early in its history, some of the ice inside the parent body ...
The defining characteristic of an energy-based molecular fragmentation method is that the molecule (also cluster of molecules, or liquid or solid) is broken up into a set of relatively small molecular fragments, in such a way that the electronic energy, , of the full system is given by a sum of the energies of these fragment molecules:
Romance needs a refresh when your idea of spicing things up means ordering from a different takeout spot. Level up your love life with 22 date ideas that go beyond the basic dinner reservation ...
These were a favorite on school field trips because they didn't have chocolate and wouldn't melt," says Associate Editorial Director Kimberly Holland. "We'd pack them in our lunches and snack on ...