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.
protective measures. One type of protective measure is personal protective equipment (PPE). PPE is equipment or a device that protects a workerâ¢s body from hazards and any harmful conditions (existing and potential) that may result in injury, illness, or possibly death. PPE may be an item worn on the body, such as gloves, or a device, such as a