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Niklas Dahlström
Hello everyone,   Swedish rookie here with a question: what is the difference between lead and quicksilver? I've tried wikipedia but couldn't find any clear answers. As far with my limited chemical knowledge I can't really find any good answers so that's why I am here. Are they different heavy metals or maybe just a synonym? Any input warmly… (Show more)
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Conor Hawkins
I have some questions about Diels-Alder reaction kinetics.  I have been trying to combine a conjugated fatty acid with TMPTA and keep gelling the reaction.  Do I need more of an inhibitor?  Am I allowing the reaction to go on too long, or at too high a temperature?  Would I have better luck with a diacrylate?
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Alice Lane
During the last month I have had a serious and life altering allergic reaction to a medical device. Here are the details:   In May 2018 I was told by Dr Machado (Kensington MD 301 949 4242) that I needed to wear 15-20 mmHg compression stocking to protect a varicose vein in my L leg. I went to a local drug store, found and bought JOBST thigh highs… (Show more)
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ammonia water
Ammonia water can be both beneficial for multiple manufacturing companies. Ammonia is used commercially as the main chemical for plastic products, explosives, cleaning agents, and etc. However, this chemical poses a grave threat to human life especially when it goes through wastewater.   Aqueous Ammonia | Ammonia Liquid| Liquor Ammonia | Ammonium… (Show more)
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John Garner
  The visible spectrum of light encompasses only a small sliver of available electromagnetic range. Light with wavelengths just slightly past the human visible range are referred to as near-infra-red light and such light is routinely used in house-hold items such as television remote controls and garage-door sensors. This light has the ability to… (Show more)
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John Garner
Colorectal cancer is one of the most commonly diagnosed cancers worldwide. The severe side effects of most chemotherapeutics used for treating this cancer limit their dosage. Use of a delivery system to improve uptake of the medicinal molecules to the cancer site can improve efficacy and reduce side-effects. Recently, researchers at Universidade… (Show more)
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Alice Lane
I believe that medical stocking I wore for several weeks caused this reaction to my skin. I have had this now for over 4 weeks. It is getting better, but very slowly. I need to find a chemist who can determine the components/composition in these stockings--the exact chemical make-up/properties of the pantyhose. How do I find this type of… (Show more)
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Liubov Lokot
In the framework of the effective mass theory the Schrödinger equation is solved for the valence bands with $3\times3$ block Hamiltonian which are shown to be related with the symmetry group of C_{6v}. The exact solutions of the Schrödinger equations for materials with wurtzite band dispersion as well as uncertainty Heisenberg principle of…
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