TGA

Thermogravimetric analysis (TGA) is a thermal analysis technique in which the mass of a sample is measured as a function of temperature or time under a controlled atmosphere. TGA provides information about composition, thermal stability, moisture content, and desorbed or evolved species. The data are typically plotted as mass versus temperature or time, with the derivative curve (DTG) showing rates of mass loss. Applications include characterization of polymers and composites, fillers and additives, oxidation and decomposition studies, and determination of moisture or solvent content. Measurements are sensitive to atmosphere, heating rate, and sample preparation.

Truevision TGA is an image file format originally developed by Truevision Inc. for raster graphics. The format stores image data with various color depths (commonly 8, 16, 24, or 32 bits) and supports an alpha channel. It can be stored uncompressed or with simple run-length encoding (RLE) compression and may include a color palette for indexed images. Although once popular in graphics pipelines and game development, it has largely been superseded by modern formats such as PNG and TIFF.

The Therapeutic Goods Administration (TGA) is an Australian government regulatory agency within the Department of Health. It assesses and regulates medicines, medical devices, vaccines, blood products, and other therapeutic goods for quality, safety, and efficacy. Responsibilities include pre-market evaluation, registration or listing, post-market surveillance, pharmacovigilance, and enforcement of advertising and labeling standards. The TGA collaborates with industry, health professionals, and international regulators to support public health.

In genetics, TGA is one of the three stop codons in DNA, corresponding to UGA in mRNA. It signals termination of translation during protein synthesis in many organisms, ending polypeptide assembly.