dictionary definitions of tar and pitch are so close "viscous liquid obtained by destructive destillation of organic material" that I cannot see the difference?
someone in the know - possibly someone from the proximity of the fabled pitch drop experiment?
To transport substances from the site of their production to their destination, the body needs a sophisticated transport and sorting system. Various receptors in and on the cells recognize certain molecules, pack them and ensure that they are transported to the right place. One of these...
Children who are exposed to polychlorinated biphenyls (PCBs), which were commonly used in a range of industrial products, could be at risk of an increase in asthma symptoms, according to new research. The study was presented in a poster discussion at the European Respiratory Society's Annual...
could you supply me with some ideas? if you can also tell me what kind of eco friendly ingredients can i add into the cigarette to make it environment friendlier? thnks .. also could you turn bamboo/hemp/or cornstarch into a cigarette tube?
The RCP has responded to comments about decriminalisation of illicit substances made by the former president of the Royal College of Physicians (RCP), Professor Sir Ian Gilmore. 'The findings of the RCP's joint report with the Royal College of Psychiatrists in 2000 Drugs, dilemmas and choices...
or the removal of other substances? why is that important to know when changing your diet?
how do the cells react in your body with introduction of new subtances (food)? or its removal
A new study on the smokeless tobacco product called moist snuff placed between lip and gum - has led scientists in Minnesota to urge the tobacco industry to change manufacturing practices to reduce snuff's content of carcinogens. Their study is published online in ACS' monthly journal Chemical...