Stop using heparin and call your doctor at once if you have: 1  signs of a blood clot - sudden numbness or weakness, severe headache, slurred speech, problems with speech or vision, chest pain, sudden cough, wheezing, swelling or warmth in one or both legs; 2  fever, chills, runny nose, or watery eyes; 3  trouble breathing; or.
Use cracked in a sentence. 1  broken or fractured, usually without complete separation of parts; having a crack or cracks. 2  harsh or strident: a cracked voice. 3  Informal mentally unbalanced.
Cracking is used to modify the structural nature of the feedstock (i.e. crude oil). In short, you can get more of what you want, and waste almost nothing. Even the lousiest feedstock can be cracked into a high quality material.