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While BLAST is faster than any Smith-Waterman implementation for most cases, it cannot "guarantee the optimal alignments of the query and database sequences" as Smith-Waterman algorithm does. The Smith-Waterman algorithm was an extension of a previous optimal method, the Needleman–Wunsch algorithm , which was the first sequence alignment ...
BLAST (biotechnology), Basic Local Alignment Search Tool, an algorithm used in bioinformatics; Blast cell or precursor cell, in cytology, a type of partially differentiated, usually unipotent cell; Blast disease, a disease of cereal crops; Blast injury, a complex type of physical trauma resulting from direct or indirect exposure to an explosion
HTML is the default output format for NCBI's web-page. Results for NCBI-BLAST are presented in graphical format with all the hits found, a table with sequence identifiers for the hits having scoring related data, along with the alignments for the sequence of interest and the hits received with analogous BLAST scores for these. [8]
A BLAST variant called MegaBLAST indexes 4 databases to speed up alignments. [ 9 ] BLAT can extend on multiple perfect and near-perfect matches (default is 2 perfect matches of length 11 for nucleotide searches and 3 perfect matches of length 4 for protein searches), while BLAST extends only when one or two matches occur close together.
However, the BLAST program offers more options for correcting for biased composition statistics. Therefore, the program PRSS is added in the FASTA distribution package. PRSS shuffles the matching sequences in the database either on the one-letter level or it shuffles short segments which length the user can determine.
The weapon therefore featured a metal shield attached to the launch tube to protect the operator’s face from the blast. With later designs such as the RPG-7, the rocket exits the launcher with a low-powered gunpowder charge, and the main rocket motor then fires after the rocket has travelled 10 m (33 ft). In some other designs, the propellant ...
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The PCI method is based on the simple concept of primary air (termed the "conveying gas") carrying pulverized coal which injected through a lance to the tuyere (mid-bottom inlet of a blast furnace), then mixed with secondary hot air (termed the "blast") supplied through a blowpipe in the tuyere and then piped to a furnace to create a balloon ...