You will have it the rest of your life. COPD usually gets worse over time, but you can learn how to manage it. Pulmonary refers to the lungs and airways. The condition is obstructive because it limits the flow of air into and out of your lungs.
The FischerâTropsch process is a set of chemical reactions that changes a mixture of carbon monoxide gas and hydrogen gas into liquid hydrocarbons. People care about the F-T process for many different reasons, for example, it might be a way to make fuel for cars and trucks that doesn't pollute as much as fossil fuels.
Scutching is a step in the processing of cotton or the dressing of flax in preparation for spinning. The scutching process separates the impurities from the raw material, such as the seeds from raw cotton or the straw and woody stem from flax fibers. Scutching can be done by hand or by a machine known as a scutcher. Hand scutching of flax is done with a wooden scutching knife and a small iron scraper.