If plaque buildup reduces the radius of the artery by a factor of 2, the flow rate becomes 1/16th of the original.
Coronary heart disease results from a deposition of plaque in the blood vessels which transport blood to the heart. When the flow of blood to the heart is hampered or obstructed, the heart can be harmed due to a deficiency of oxygen.
Moreover, if a large section of plaque that is deposited gets displaced from an artery wall, it can get stick in other arteries in the body as well, including those present in the brain.
For convenience, an assumption can be made that the artery is cylindrical in shape with a radius of R. The flow rate of a viscous fluid (blood in this case) is determined by Poiseuille's Law, i.e. Q = (π/8) (ΔP/ηl)r4.
To learn more about Poiseuille's Law here
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He MRP proteins<span> are </span>found<span> throughout the nature and they mediate </span>many<span> important</span>functions<span>. .... In tumor </span>cells<span>, the 190 kDa MRP1 </span>can<span> confer </span>resistance<span> to not only doxorubicin, but </span>many other<span> widely used antineoplastic </span>drugs<span>, including methotrexate (MTX), daunorubicin, vincristine and etoposide [5, 23, ...</span>
As in printing a book, if there is a slight defect in the mutation, it will be copied to every other mutation, just like a grammatical error in a book.
Answer:
1-
1One of the main problems is the lack of sewers, 2overcrowding, 3misbehavior when dividing garbage into organic and inorganic, 4 and the lack of habits when it comes to not throwing garbage on the floor.
2 -
the measures they have to have is subdivision of baskets for organic and inorganic material, installation of sewers, fine for those who contaminate public roads
3-
My contribution would be to encourage and try to instill these low-pollution habits in my neighbors or acquaintances, relatives and make them understand the importance of why they are carried out.
4-
Test:
Today we have to understand that in order to develop optimally in our work environment, it is essential that it be healthy, optimal and pleasant for human life. Pollution today is not only physical but can also be noise, climate, energy and even in terms of the attitudes of the people around us.
That is why the work environment should be as decontaminated as possible against anything that affects human viability or good work.
Explanation:
Today, domestic waste is the least controlled waste, and the one that is emitted the most en masse, many people are not aware as daily life requires a rhythm of life that they do not stop to think about the importance of this problem.
