1 Systematics : The study of the identification, taxonomy and nomenclature of organisms, including the classification of living things with regard to their natural relationships and the study of variation and the evolution of taxa.he Swedish botanist Carolus Linnaeus is regarded as the father of taxonomy, as he developed a system known as Linnaean classification for categorization of organisms and binomial nomenclature for naming organisms.
Pulmonary thromboendarterectomy. In thoracic surgery, a pulmonary thromboendarterectomy (PTE) is an operation that removes organized clotted blood (thrombus) from the pulmonary arteries. Contents. 1 Indication. 2 Description of the surgery.
Also known as: Perchloroethylene, Perc, PCE, PerSec, Tetranec. Chemical reference number (CAS): 127-18- 4. Tetrachloroethylene (PCE) is a nonflammable, liquid solvent widely used in dry cleaning, wood processing, fabric manufacturing, and metal degreasing.In homes, it may be found in suede protectors, paint removers, furniture stripper, water repellents, silicone lubricants, spot removers, glues, and wood cleaners.nformation. People are most often exposed to PCE when they use it in their work, when cleaning or doing hobbies. Breathing: PCE evaporates into the air. People are commonly exposed to PCE by breathing air containing its vapors. PCE can contaminate home air when people use cleaning solvents or other products.