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1.
Appl Opt ; 41(27): 5660-7, 2002 Sep 20.
Article in English | MEDLINE | ID: mdl-12269566

ABSTRACT

A new regime for silica glass machining for micro-optical fabrication applications, which uses pulsed CO2 laser radiation in the 2.5-100-micros pulse width region that has been generated by an acousto-optic modulator, is investigated. A filamentary melt ejection process that generates fibers and significant melt displacement limits machining quality below 30-micros pulse width. Ablation and melt ejection thresholds are quantified relative to pulse width, and the region from 30 to 50 micros is identified for low-threshold, smooth machining without melt displacement and ejection effects.

2.
Bioinformatics ; 18(9): 1162-6, 2002 Sep.
Article in English | MEDLINE | ID: mdl-12217907

ABSTRACT

MOTIVATION: In gene discovery projects based on EST sequencing, effective post-sequencing identification methods are important in determining tissue sources of ESTs within pooled cDNA libraries. In the past, such identification efforts have been characterized by higher than necessary failure rates due to the presence of errors within the subsequence containing the oligo tag intended to define the tissue source for each EST. RESULTS: A large-scale EST-based gene discovery program at The University of Iowa has led to the creation of a unique software method named UITagCreator usable in the creation of large sets of synthetic tissue identification tags. The identification tags provide error detection and correction capability and, in conjunction with automated annotation software, result in a substantial improvement in the accurate identification of the tissue source in the presence of sequencing and base-calling errors. These identification rates are favorable, relative to past paradigms. AVAILABILITY: The UITagCreator source code and installation instructions, along with detection software usable in concert with created tag sets, is freely available at http://genome.uiowa.edu/pubsoft/software.html CONTACT: tomc@eng.uiowa.edu


Subject(s)
Database Management Systems , Expressed Sequence Tags , Gene Library , Information Storage and Retrieval/methods , Software , Algorithms , Animals , Base Sequence , Models, Genetic , Models, Statistical , Molecular Sequence Data , Rats , Reproducibility of Results , Sequence Analysis, DNA , Sequence Tagged Sites
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