The diffusion coefficient of a large protein molecule is found
to be 2.2×10-13 m2/s in the...
The diffusion coefficient of a large protein molecule is found
to be 2.2×10-13 m2/s in the water at 20∘C.
Assuming it is spherical with a density of 1.3×103
kg/m3, compute its molar mass.
1) The diffusion coefficient of the protein BSA in water at 25°C
is 6.7 10-11 m2s-1. Calculate the
hydrodynamic volume of this protein assuming it can be regarded as
a sphere
Vh =
2) The molecular weight of BSA is 66,430 g/mol, and its partial
specific volume (the inverse of the density) is 0.734
cm3/g. What is the volume of one “dry” molecule of BSA?
(i.e. the unhydrated protein)
V =
1. If the oxygen diffusion coefficient in tissue is assumed to
be 1.1x10-5 cm2/s and fluid velocity is 1 mm/s, how large a
distance between capillaries is required for convection to play an
equally significant role as diffusion? Assuming an average distance
between capillaries of 100 mm, does convection play a significant
role? Use Peclet number to justify answers.
Given: M1= 75kg; M2 = 50kg; V (M1) = 10 m/s North; V (M2) = 10
m/s West
Action: Collision, two masses stick together, move at
unspecified angle in M2's initial direction
Question: Find magnitude of their speed together after
collision.
Oil, with ρ = 1100 kg/m3 and kinematic coefficient of viscosity ν =
0,00001 m2/s,flows at qv = 0,2 m3/s through 500 m of 200-mm
diameter smooth pipe. Determine (a) the head loss and (b) the
pressure drop
This question pertains to Fluid Flow in the Chemical
Engineering Department. The response is required within 30
minutes
A liquid (ρ = 1000 kg/m3; μ = 2 × 10–2 N ∙ s/m2; v = 2 × 10–5 m2/s) flows tangentially past a flat plate with total length of 4 m (parallel to the flow direction), a velocity of 1 m/s, and a width of 1.5 m. What is the skin friction drag (shear force) on one side of the plate?
The steady-state diffusion flux through a metal plate is 5.4 x 10-10 kg/m2 s at a temperature of 827 °C (1100 K) and when the concentration gradient is -350 kg/m4 . Calculate the diffusion flux at 1027 °C (1300 K) for the same concentration gradient and assuming an activation energy for diffusion of 150,000 J/mol.
Calculate the heat-removal factor for a collector having an
overall heat loss coefficient of 10 W/m2 K and constructed of
copper fins and tubes (k = 390 W/m?K). Tube-to-tube center distance
is 12 cm, fin thickness is 0.05 cm, tube diameter is 1.5 cm, and
fluid-tube heat transfer coefficient is 1000 W/m2K. The cover
transmittance to solar radiation is 0.8 and is independent of
direction. The solar absorptance of the absorber plate is 0.9, the
collector is 1 m wide...
What is the Spike protein found in the SARS-CoV-2 virus?
Describe the structure of the S protein (quaternary, tertiary,
secondary and primary protein layers). Also highlight key domains
and features of the structure of the S-protein that are important
for its function.
Analyze the assertions and principles of Scripture found in
Ecclesiastes 5:10-11, Luke 3:13-14, Philippians 4:10-13, and 1
Timothy 6:1-16. How do these passages apply to economics? How do
they affect and impact a Christian understanding of economics? 250
words or more