<span>The data showed the concentration of antibodies which lets you know how far the disease is. The deeper the color the more prominent the antibodies, so you can see who has been exposed to the disease longer and try and identify patient zero.</span>
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Carboxylic acids boil at considerably higher temperatures than do alcohols, ketones, or aldehydes of similar molecular weights. This is because they form stable hydrogen-bonded dimers.
Carboxylic acid dimers are useful model systems for understanding the interplay of hydrogen bonding, hydrophobic effects, and entropy in self-association and assembly.
Through extensive sampling with a classical force field and careful free energy analysis, it is demonstrated that both hydrogen bonding and hydrophobic interactions are indeed important for dimerization of carboxylic acids (except formic acid).
The dimers are only weakly ordered, and the degree of ordering increases with stronger hydrophobic interactions between longer alkyl chains. Comparison of calculated and experimental dimerization constants reveals a systematic tendency for excessive self-aggregation in current classical force fields.
Qualitative and quantitative information on the thermodynamics of hydrogen bonding and hydrophobic interactions derived from these simulations is in excellent agreement with existing results from experiment and theory. These results provide a verification from first principles of previous estimations based on two statistical mechanical hydrophobic theories.
We also revisit and clarify the fundamental statistical thermodynamics formalism for calculating absolute binding constants, external entropy, and solvation entropy changes upon association from detailed free energy simulations. This analysis is believed to be useful for a wide range of applications including computational studies of protein-ligand and protein-protein binding.
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The foods that would best
meet the vitamin needs identified for bone health:
Peaches, spinach, milk and tomatoes. Dark leafy vegetables are good for
the bones too. Milk is rich in calcium, good for the bones. Tomato is rich in
magnesium, good for the bones.
Answer:
it's true because physic is related with health
