Search results
Results From The WOW.Com Content Network
Main page; Contents; Current events; Random article; About Wikipedia; Contact us
A simplified Jablonski diagram illustrating the change of energy levels.. The principle behind fluorescence is that the fluorescent moiety contains electrons which can absorb a photon and briefly enter an excited state before either dispersing the energy non-radiatively or emitting it as a photon, but with a lower energy, i.e., at a longer wavelength (wavelength and energy are inversely ...
In biology, a probe is a single strand of DNA or RNA that is complementary to a nucleotide sequence of interest. RNA probes can be designed for any gene or any sequence within a gene for visualization of mRNA , [ 3 ] [ 4 ] [ 5 ] lncRNA [ 6 ] [ 7 ] [ 8 ] and miRNA in tissues and cells.
His 1811 paper "Essay on Determining the Relative Masses of the Elementary Molecules of Bodies", he essentially states, i.e. according to Partington's A Short History of Chemistry, that: [15] The smallest particles of gases are not necessarily simple atoms, but are made up of a certain number of these atoms united by attraction to form a single ...
Commercially available laboratory-based chemical imaging systems emerged in the early 1990s (ref. 1-5). In addition to economic factors, such as the need for sophisticated electronics and extremely high-end computers, a significant barrier to commercialization of infrared imaging was that the focal plane array (FPA) needed to read IR images were not readily available as commercial items.
It was founded in 2000 and launched its first journal, PLOS Biology, in October 2003. As of 2024, PLOS publishes 14 academic journals, [ 2 ] including 7 journals indexed within the Science Citation Index Expanded , and consequently 7 journals ranked with an impact factor .
A graphical abstract (or visual abstract [1]) is a graphical or visual equivalent of a written abstract. [2] [3] Graphical abstracts are a single image and are designed to help the reader to quickly gain an overview on a scholarly paper, research article, thesis or review: and to quickly ascertain the purpose and results of a given research, as well as the salient details of authors and journal.
The figure on the left illustrates the definition of the φ and ψ backbone dihedral angles [2] (called φ and φ' by Ramachandran). The ω angle at the peptide bond is normally 180°, since the partial-double-bond character keeps the peptide bond planar. [3]