Transcript of Cast Iron: An Invention of Ancient China. Mass-production began in the Han dynasty. At the time of its invention, cast iron had many uses. Since the discovery of steel, iron (both cast and wrought) has become less common, as steel is generally stronger.
Asafoetida is a plant. It has a bad smell and tastes bitter. That probably explains why it is sometimes called âdevilâs dung.â. People use asafoetida resin, a gum-like material, as medicine. Asafoetida resin is produced by solidifying juice that comes out of cuts made in the plantâs living roots. Asafoetida is used for breathing problems including ongoing (chronic) bronchitis, H1N1 swine flu, and asthma.
Sulfasalazine is used to treat a certain type of bowel disease called ulcerative colitis. This medication does not cure this condition, but it helps decrease symptoms such as fever, stomach pain, diarrhea, and rectal bleeding. After an attack is treated, sulfasalazine is also used to increase the amount of time between attacks.