When we had our first child we were worried about contracting pertussis and then passing it on to our as yet unvaccinated infant. So my wife and I both had booster shots for pertussis a few weeks after the baby was born, all recommended by and paid for by the Australian government. Consulting google it was probably Diphtheria-tetanus-acellular pertussis (dTpa) vaccine. I don't see the problem with the inclusion of several more antigens...
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This is a polymer formed from a diamine and paraformaldehyde which would yield formaldehyde upon depolymerisation. It will make a network of hemiaminals initially which then give poly(hexahydrotriazine)s when heated, ie 6 membered rings with alternating carbons and nitrogens. Heating an aminal (NH-C-OH) would eliminate water which is driven off giving the ring.
Different diamines could be used, either PEG diamines to give water soluble materials or aryl diamines. Not sure if part of the thermosetting is due to Mannich reactions (Aryl ring + -N=CH2) in the case of aryl diamines.
Note I only read the abstract.
Science can be settled. This happens when there is a consensus that the evidence for a theory is overwhelming. When there is a consensus that the current theory doesn't explain observations, then it is settled that a new theory is needed.
The atomic theory of matter is an example. Atomic theory was once nothing more than conjecture. Experimentation and observation determined that matter is made of atoms. All modern industries involved in biology and chemistry as well as manufacturing rely upon this theory. We can now "see" atoms with a variety of different tools, but their presence is still inferred much like I infer that there is a computer screen in front of me because light reflected from it is hitting my retina.
Atomic theory being wrong has the same probability as someone discovering that a 2013 Prius is not made from parts.
- if you or any relative ever used opiates (e.g., as painkillers for a cancer), then you're at least partially responsible for funding the taliban in Afghanistan. (There is no opium poppy grown in the USA to the best of my knowledge, you know.)
Pharmaceutical companies do not buy their raw poppy extracts from Aghanistan. They buy them from opium poppy farms in the first world. Much of it comes from Tasmania, an island state in Australia which is geographically isolated and so not easily raided by addicted fiends.
On the other hand, as a doctor I can tell you that caffeine and taurine belong to the group of drugs called xanthines, whose pharmacodynamic and pharmacokinetic effects are very well known.
You may be a doctor but you are most definitely not a doctor of chemistry. Caffeine is a xanthine which is a type of heterocycle. Taurine is 2-aminoethanesulfonic acid.