A guitalele is a hybrid of a classic guitar and a ukulele. It sports a size equal to 1/4 of a classical acoustic guitar, along with all the tonal possibilities of a ukulele.
DTA stands for Digital Transport Adapter. It's an inexpensive and very basic digital cable device that allows you to watch all Limited Basic and Expanded Service channels that were migrated from analog to digital (Usually the first 99 channels). DTAs will not receive premium channels such as HBO, Showtime, etc.
Trichloroacetic acid (TCA) precipitation of proteins is commonly used to concentrate protein samples or remove contaminants, including salts and detergents, prior to downstream applications such as SDS-PAGE or 2D-gels.. Theory. TCA is an analog of acetic acid in which the three hydrogen atoms of the methyl carbon have been replaced with chlorine atoms. TCA is a relatively weak acid so it cannot hydrolyze the peptide bonds of proteins, but it does maintain an acidic pH in water.