Navy, and more specifically, its enormously expensive aircraft carrier battle groups. During the exercise, a Canadian submarine slipped quietly through a carrier's destroyer screen, and conducted a devastating simulated torpedo attack on the ship.
Feature keys reference 7.
Summary of qualifiers for feature keys 7. The GenBank, EMBL, and DDBJ nucleic acid sequence data banks have from their inception used tables of sites and features to describe the roles and locations of higher order sequence domains and elements within the genome of an organism. The Feature Table documentation represents the shared rules that allow the three databases to exchange data on a daily basis.
The range of features to be represented is diverse, including regions which: Feature key - a single word or abbreviation indicating functional group Location - instructions for finding the feature Qualifiers - auxiliary information about a feature 2.
Feature keys are arranged hierarchically, allowing complex and compound features to be expressed. Both location operators and the feature keys show feature relationships even when the features are not contiguous.
The hierarchy of feature keys allows broad categories of biological functionality, such as rRNAs, to be easily retrieved. A number of "generic" or miscellaneous feature keys have been added to permit annotation of features that cannot be adequately described by existing feature keys.
These generic feature keys will serve as an intermediate step in the identification and addition of new feature keys. The syntax has been designed to allow the addition of new feature keys as they are required.
Each end point of a feature may be specified as a single point, an alternate set of possible end points, a base number beyond which the end point lies, or a region which contains the end point. The location field can contain operators or functional descriptors specifying what must be done to the sequence to reproduce the feature.
For example, a series of exons may be "join"ed into a full coding sequence. Features, such as open reading frames or sequences showing sequence similarity to consensus sequences, for which there is no direct experimental evidence can be annotated.
Therefore, the feature table can incorporate contributions from researchers doing computational analysis of the sequence databases. However, all features that are supported by experimental data will be clearly marked as such. A consistent syntax allows machine extraction and manipulation of sequences coding for all features in the table.
For example, an item in the feature table such as: The feature CDS is a coding sequence beginning at base 23 and ending at basehas a product called 'alcohol dehydrogenase' and is coded for by a gene called "adhI".
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The DDBJ/ENA/GenBank Feature Table Definition Feature Table: Definition Version December DNA Data Bank of Japan, Mishima, Japan. Fastest way to get the integer part of sqrt(n)? Ask Question. up vote 59 down vote favorite. As we know if n is not a perfect square, then sqrt(n) would not be an integer.
Since I need only the integer part, I feel that calling sqrt(n) wouldn't be that fast, as it takes time to calculate the fractional part also.