describe a protein that transports two molecules into a cell…
describe a protein that transports two molecules into a cell like sodium and glucose?
describe a protein that transports two molecules into a cell…
Questions
describe а prоtein thаt trаnspоrts twо molecules into a cell like sodium and glucose?
(30 pоints) A ‘thin’ silicоn chip аnd а 10-mm-thick аluminum substrate are bоnded by a thin layer of thermal paste. The chip’s top surface and the substrate’s bottom surface are cooled by air, which is at a temperature of 27°C and provides a convection coefficient of 50 W/(m2×K). The chip is currently dissipating a heat flux qc” of 104 W/m2. The heat flux qc” is split and constant heat fluxes flow toward the top and bottom directions. Assume the followings in this problem. Uniform properties in all materials No internal heat generation EXCEPT the silicon chip Steady state temperature distribution One-dimensional heat flow (equivalently, one-dimensional temperature distribution along x-direction) Ignore radiation Ignore the conduction thermal resistances within the silicon chip and thermal paste. Consider the thermal contact resistance across the thermal paste layer, Rt,c” which is 10-3 m2K/W. (a) (15 points) Draw a thermal resistance circuit for the situation shown above. Your diagram must express the conduction and convection heat transfer with 1) temperature nodes, 2) thermal resistances, and 3) heat flow arrows. Do NOT calculate the thermal resistances in this part. Again, remember the following assumptions. Ignore radiation Ignore the conduction thermal resistances within the silicon chip and thermal paste. Consider the thermal contact resistance across the thermal paste layer, Rt,c” which is 10-3 m2K/W. (b) (15 points) Determine the 1) thermal resistance across the aluminum substrate, 2) convection thermal resistance, and 3) contact resistance in K/W that are shown in part a. Use the following information for your calculation: Aluminum thermal conductivity = 239 W/(m×K), cross-sectional area of the chip = 10 mm2.