definitions

Plaque Assay:

 Assay for virus in which a dilute solution of the virus is applied to a culture dish containing a layer of the host cells, convective spread is prevented by making the medium very viscous. After incubation the plaques, areas in which cells have been killed (or transformed), can be recognised and the number of infective virus particles in the original suspension estimated.

http://www.mondofacto.com/facts/dictionary?plaque%20assay

Plaque Reduction Assay

a method for titrating an antiserum by analyzing the inhibitory eect of antibodies on the infectivity of virus using the plaque assay

B.W.J. Mahy, A Dictionary of Virology, Academic Press, 2nd edition, 1997.

What is an Object File?

An object file is basically a file containing machine language instructions and data in a form that the linker can use to create an executable program. Each routine or data item defined in an object file has a corresponding symbol name by which it is referenced. A symbol generated for a routine or data definition can be either a local definition or global definition. Any reference to a symbol outside the object file is known as an external reference.

explanations of Local Definitions, Global Definitions, External References follow

from http://docs.hp.com/en/B2355-90655/ch02s03.html

On DNA, RNA and other such stuff

Following images from http://www.salisbury.edu/biology/faculty/flerickson/Human%20Genome%20assignment%20paper%2006.htm

DNA Song on Youtube

Central Dogma explained (spaceship isshtyle)

Main principle of central dogma: 

DNA -> RNA -> Protein

• DNA stores information e.g. codes for sequence of amino acids to form specific proteins
  
• TRANSCRIPTION: writing by copying from one medium to another, as a typewritten version of dictation.
  Here copied from DNA to RNA (messenger RNA)
  Occurs inside nucleus
• mRNA moves out to cytoplasm and attaches to Ribosome
• Then mRNA TRANSLATED into Proteins

Other processes

REPLICATION: DNA -> DNA 

SPLICING: RNA -> RNA

Good Explanation Series - the first entry

Eigen Vectors, Eigen Values and Eigen Spaces
(Eigenvalue, eigenvector and eigenspace)
- well explained at http://en.wikipedia.org/wiki/Eigenvector

Hilbert Space
- well explained at http://en.wikipedia.org/wiki/Hilbert_space