Exponential Population Growth Jessica Fratantoni: Lab 2's
.Asexual .Sexual
Even though we started with the same
number of lizards in both the asexually
and sexually reproducing populations,
the asexual population ended up with
considerably more lizards af
Asexual Female Lizard
@ Time: 00:36
Total Crickets Eaten: 9
Calories from Crickets: 450
Calories Used for Egg Production: 120
Calories Used to Reproduce: 190
Calories Used for BMR: 123
Total Calories Used: 433
Leftover Calories after Reproduction: 87
ono
Jessica Fratantoni
1.
Assign attractiveness scores to the first 20 faces of each sex on a scale from 1 10.
Male Or Female
Female #1
Female #2
Female #3
Female #4
Female #5
Female #6
Female #7
Female #8
Female #9
Female #10
Female #11
Female #12
Female #13
Jessica Fratantoni
Lab 8
I am currently in the process of fostering a puppy at my home in Tempe and named her
Lucy. This puppy is currently a female and is an eight-week old terrier mix. In todays society
most puppies are known to not be a complete purebr
Fratantoni 1
Jessica Fratantoni
Bio 112 (I-course)
Lab 3
24 January 2017
Observation for Earths inclination:
The 23.5-degree axial tilt of the Earth had many interesting observations. For starters, it was the
coldest temperature during the autumn and the
Jessica Fratantoni
Lab 5
February 9, 2017
The lizard in the video did 8 push-ups in 13 seconds. Having this information, you are to
figure out how many pushups the lizard could do in the allotted time of 30 minutes. Knowing
that there are 60 seconds in ea
Solutions To The Linear Diffusion Equation
Martin Eden Glicksman
Afina Lupulescu
Rensselaer Polytechnic Institute
Troy, NY, 12180
USA
meg/aol 02
Outline
Transform methods
Linear diffusion into semi-infinite medium
Boundary conditions
Laplace transfor
Crystal Growth
General Formalism
Phase growing into with velocity v :
v f k
f ( site factor ) : fraction of sites where a new atom
can be incorporated 0 < f < 1
: interatomic distance
k
: jump frequency
*at equilibrium temperature and ( T ) the net k mu
Thermodynamics of surface and interfaces (Gibbs 1876
-78)
J. W. Gibbs, collected works, Yale Univ. Press, New Haven, vol.1(1957), p. 219 ~ 331.
Define
:
Consider
to be a force / unit length of surface perimeter.
(fluid systems)
If a portion of the perim
Diffusion in Substitutional Alloys
In a binary substitutional alloy, the rate at which solvent (A) and solute (B)
atoms move into a vacant site is not equal, and each spices will have its own
diffusion coefficient, called the intrinsic diffusion coefficie
Simple Rate Equations
Consider a chemical reaction: A B
There are two common trends for the time rate of
change of the concentration, CA.
first order reaction kinetics
2
second order reaction kinetics
order refers to the exponent on CA and k is the ra
Kinetics of Nucleation
(a) i 1 1
ki 1
i
ki
(b) i 1 i 1
For eqn. (a)
Bimolecular reactions describing
flux of atoms into and out of i
sized-clusters
forward Rx
dni
kii ni 1
dt
backward Rx
dni
ki ni
dt
Writing a similar set of eqns. For (b) and combining
Description of Phase Transformation
(i) Equilibrium phase transformations occurring at the transition
temperature ( e. g. freezing at Tm)
(ii) Non-equilibrium phase transformations
(freezing below Tm)
Equilibrium phase transitions:
Recall the Ehrenfest (c
Diffusion in interfaces on surfaces and along dislocations
Grain Boundary Diffusion :
d
Diffusion along grain boundaries is more rapid than normal lattice diffusion.
Packing density in a grain boundary is less than the perfect lattice so
atoms can change
Alloy Solidification
Def. Partition coefficient k
xs
k
xL
T1
T2
T3
xs and xL are the mole fraction of
solute in the solid and liquid
respectively.
kx0 x0
x0 / k
We will consider 3 limiting cases of the solidification process. :
(a) Infinitely slow (equil
MSE 335 2nd problem set Due Tuesday Feb 14, 2016
An interdiffusion experiment is performed at 1054 C for 300 hours with pure copper
and pure nickel as end members of a diffusion couple. The concentration profile is
measured and shown in the Table below. I
MSE 250: Structure and Properties of Materials
2. Atomic Structure & Atomic Bonding
Instructor: Prof. Yang Jiao ([email protected])
Office: Engineering Research Center Rm 387
Phone: 480-965-4560
Expected Outcome
Key concepts:
Skills:
Atomic structure;
P
MSE 250: Structure and Properties of Materials
13. Ceramics I
Instructor: Prof. Yang Jiao ([email protected])
Office: Engineering Research Center Rm 387
Phone: 480-965-4560
Expected Outcome
Key concepts:
Amorphous structure of ceramics
Glass transition
MSE 250: Structure and Properties of Materials
15. Polymers I
Instructor: Prof. Yang Jiao ([email protected])
Office: Engineering Research Center Rm 387
Phone: 480-965-4560
Expected Outcome
Key concepts:
Structure and properties of polymers
Molecular we
MSE 250: Structure and Properties of Materials
18. Semiconductors
Instructor: Prof. Yang Jiao ([email protected])
Office: Engineering Research Center Rm 387
Phone: 480-965-4560
Expected Outcome
Key concepts:
Electrical conductivity
Electronic band
Intri
MSE 250: Structure and Properties of Materials
10. Phase Diagram I
Instructor: Prof. Yang Jiao ([email protected])
Office: Engineering Research Center Rm 387
Phone: 480-965-4560
Expected Outcome
Key concepts:
Phase
Phase diagram and tie line
Liquidus an
MSE 250: Structure and Properties of Materials
1. Overview
Instructor: Prof. Yang Jiao ([email protected])
Office: Engineering Research Center Rm 387
Phone: 480-965-4560
Expected Outcome
What is materials science and engineering and why its important?
W
MSE 250: Structure and Properties of Materials
16. Polymers II
Instructor: Prof. Yang Jiao ([email protected])
Office: Engineering Research Center Rm 387
Phone: 480-965-4560
Expected Outcome
Key concepts:
Structure-properties relations of polymers
Diffe
MSE 250: Structure and Properties of Materials
11. Phase Diagram II
Instructor: Prof. Yang Jiao ([email protected])
Office: Engineering Research Center Rm 387
Phone: 480-965-4560
Expected Outcome
Key concepts:
Phase, phase diagram, tie line, level rule
MSE 250: Structure and Properties of Materials
17. Composites
Instructor: Prof. Yang Jiao ([email protected])
Office: Engineering Research Center Rm 387
Phone: 480-965-4560
Expected Outcome
Key concepts:
Key structural elements (matrix, reinforcement, i
MSE 250: Structure and Properties of Materials
13. Ceramics I
Instructor: Prof. Yang Jiao ([email protected])
Office: Engineering Research Center Rm 387
Phone: 480-965-4560
Expected Outcome
Key concepts:
Different crystal structures for ceramics
Typical
MSE 250 HW 2 Due Wed 09/07/2016
Reading: Callister Ch. 3 and 4
Academic Integrity: Students are encouraged to study with a partner or small group, but each student should
complete their homework by themselves (no copying allowed).
Please write clearly, sh
MSE 250 HW 1 Due 08/29/2016
Reading: Callister Ch. 1 and 2
Academic Integrity: Students are encouraged to study with a partner or small group, but each student should
complete their homework by themselves (no copying allowed).
Please write clearly, show a
HW 1 RESPONSE
Question 1
1 out of 1 points
When looking at a bright incandescent light bulb (household bulb) what
kind of a spectrum did you see through your spectrometer?
Selected
Answer:
a continuous spectrum (like a
rainbow)
Question 2
1 out of 1 point
HW3
Question 1
1 out of 1 points
Compared to the size of your face, on the convex surface, is the image
Selected
Answer:
small
er
Question 2
1 out of 1 points
Your reflection is upside down on the _ surface of the spoon?
Selected
Answer:
conca
ve
Question