Cell is a multi-core microprocessor microarchitecture that combines a general-purpose PowerPC core of modest performance with streamlined coprocessing elements which greatly accelerate multimedia and vector processing applications, as well as many other forms of dedicated computation.It was developed by Sony, Toshiba, and IBM, an alliance known as "STI". The architectural design and first implementation were carried out at the STI Design Center in Austin, Texas over a four-year period beginning March 2001 on a budget reported by Sony as approaching US$400 million. Cell is shorthand for Cell Broadband Engine Architecture, commonly abbreviated CBEA in full or Cell BE in part.
The first major commercial application of Cell was in Sony's PlayStation 3 game console, released in 2006. In May 2008, the Cell-based IBM Roadrunner supercomputer became the first TOP500 LINPACK sustained 1.0 petaflops system. Mercury Computer Systems also developed designs based on the Cell.
The Cell architecture includes a memory coherence architecture that emphasizes power efficiency, prioritizes bandwidth over low latency, and favors peak computational throughput over simplicity of program code. For these reasons, Cell is widely regarded as a challenging environment for software development. IBM provides a Linux-based development platform to help developers program for Cell chips.
I need some help identifying what three(3) factors that can affect the point at which a cell loses its totipotency or to simplify it, when the cell's fate becomes determined
My Attempt
Approximately four days after fertilization and after several cycles of cell division, these totipotent...
HI. I got some question about the derivation of the I-V characteristic in a solar cell.
The first step is to solve the minority carrier diffusion equation with appropriate boundary conditions: at the edges of the cell and at the edges of the depletion zone.
At the edges of the d.z. the...
Hello,
I'm having a lot of trouble understanding/visualizing the movement of ions through a capacitor. My book says the total current flowing through a neural membrane (that is in steady state) is equal to the current flowing through ion channels (rm) and the capacitor. However, how can ions...
Homework Statement
A protozoa that normally lives in the ocean is placed in a freshwater fish tank. What would happen to the water balance in the cell? Use the terms osmosis, turgor, cell membrane, hypertonic or hypotonic. Describe what could happen to this cell (remember to include any...
can an educated person give me an explanation on how the first cell came to be? I mean how simple can a cell really be? and I thought of something, once a cell assembles why does it need DNA, as long as the current enzymes are not destroyed it does not need blueprints on how to create them again...
This question has been bothering me for a while. When you learn about mitosis you learn about replication of DNA via specific enzymes. However, it is never fully explained just exactly how the rest of the cell is both told to divide and how it divides. I mean how do organelles like the golgi...
Do cells communicate with each other using electrical signals? and if so is it because when the membrane of the cell takes on a charge it affects the adjacent cell to it which affects that cells membranes charge?
and how is that helpful to what is happening on the inside of the cell
Dear all,
I have got abit mixed up by the way different articles make supercells. As an example the below article:
http://arxiv.org/PS_cache/cond-mat/pdf/0511/0511274v3.pdf
for making the super cell for the single layer ZnO:
1. How should we make the unit cell?
2. How amny atoms...
Hello
I'm wondering if someone can explain how OH- ions physically move from the anode to the cathode within an electrolytic cell (w/ pure water) .
Do they physically migrate from one side to the other? Or do they just pass electrons/protons back and forth between other ions H3O+ to the...
I've heard about the units that run on DC and extract O and H from water. The gases are then used on automobles to increase fuel mileage. I'd like to hear the thoughts on energe in and energy out. Also, as hybrids store energy for a finite number of power demands, can these fuel cells do a...
They give me a table of ion concentrations of the most common ions in the cell interior and in the blood. I am asked to calculate the conductivity of the cell interior and that of the blood. I have no idea how to calculate conductivity if I only know the concentrations. Here is the table I am...
Homework Statement
A cell diverges into X new cells. Each of them reproduces in the same manner. X is a geometric random variable with success parameter of 0.25.
What is the expectation of the number of great-grandsons a cell have?
2. The attempt at a solution
I thought about using the...
according to wikipedia:
Myelin increases resistance across the cell membrane by a factor of 5,000 and decreases capacitance by a factor of 50.[citation needed]
why would it decrease capacitance? I thought dielectrics were added between capacitor plates to increase capacitance...
If you have a phosphate buffered saline, you can suspend erythrocytes in it for a few minutes. But, for the sake of argument, can one as ionic compounds to the the PBS, like CsF, will it combine to form new compounds and cross the cell membrane. Or will it dissociate and stay in solution as...
hi... i have a thought in advance, that i can charge my cell phone through solar energy itself . actually I am doing my activities regarding that... giva me some suggestions which is helpful for me.. and i want to know why this is still not in market..my project is reasonable or not ?...
Finding the EMF of the cell...
first post =)
Homework Statement
Find the EMF of the cell.
(diagram has been uploaded)
Homework Equations
Resistors is series : Rs= R1 + R2 + R3
Resistors in parallel: 1/Rp = 1/R1 + 1/R2 + 1/r3
V=IR
The Attempt at a Solution
Firstly i re-drew...
Photovoltaic cell as an "on/off" switch - circuit help
Hi all,
My first post here. I'm a Mechanical Engineer prodding my finger where it shouldn't be - circuits! I need help and I am hoping you folks can. PLEASE excuse the umb terminology - I don't know this world well!
I want to turn a...
http://tinyurl.com/6fptha
The new solar cell in the link appears to violate the Second Law of Thermodynamics. It extracts energy and cools in a uniform temperature environment according to how I understand the article. Can someone explain why it doesn't? (I have no idea.)
iwe had an expirament that goes like this
we made a galvanic cell with half cell zinc and its solution (Zn(NO3)2) and the other half cell was with iron and its solution (Fe(NO3)3) (the Fe solution with ions Fe+3) (both same concentration!) the potential i measured was 0.287V
now i just don't...
What happens when you connect two silver wires immersed in 0.1M HCl to the poles of a 1.5 V battery and passing current for some time? What are the possible reactions that can occur at the anode and cathode? Which reactions will be more favorable? Can silver chloride form at either electrode...
Hi,
Just having a little trouble understanding the concept of standard cell potential...what is it exactly? I understand that it is compared to a reference potential of 0 for the reaction 2H+ + 2e- -> H2(g). But what does it mean when a given reaction has positive potential (other than the fact...
How do these batteries work? Are they simply capacitors being connected in a parallel configuration?
What is the difference between a laptop and a cell phone battery?
http://www.telegraph.co.uk/portal/main.jhtml?view=DETAILS&grid=&xml=/earth/2008/06/18/scicanc118.xml
This is pretty exciting news.
I wonder how they define "response" in response rate.
I would want to implement cell broadcast for updating people with issues on the ground on a university campus.My problem is I want to know what percentage of phones support it now and how feasible it could be, the economics of it. I am familiar with the theory .Thank you
Is there a physical model of the cell developed or being developed?
I'm nearly a physics graduate, but I'm starting to get interested in cells, they're like amazing little factories.
Homework Statement
If .060 faraday is passed through an electrolytic cell containing a solution of In +3 ions,what is the maximum number of moles on In that could be deposited at the cathode? Show half cell equation and demensional analysis.
Homework Equations
N/A
The Attempt at a...
I know that Bragg cell used in laser doppler vibrometer (LDV) is used to give information about the direction of the velocity of the object that we measure. I also know that Bragg cell will shift the frequency of the laser beam(modulation frequency is reduced) when the object is moving towards...
http://img.photobucket.com/albums/v345/crimsonflames/ddsa.jpg
thats the circuit.
isn't the equation emf = I(R+r)
0.032 * 900?
isn't right and i know it isn't, so i don't know what to do! =(
I have just finished my sophomore year at Columbia University with a major in physics. I chose Columbia College instead of the engineering school due to the better reputation/ranking and I was not sure whether to go into physics or engineering. However, after two years of courses, I am very...
Homework Statement
For my physics project I decided to make a Faraday cage to cancel out cell phone signal.
Homework Equations
The Attempt at a Solution
For my first attempts at making a successful project I used chicken wire and wire mesh to make a cylindrical cage. Our goal was...
Describe an electrochemical cell that would determine the solubility product constant at equilibrium for cupric hydroxide and calculate it.
I'm totally lost on this one, any help is greatly appreciated.
Hi All,
Let's consider a Copper bulk material. This one can be reproduce (ad infinitum) by using a cubic unit cell (fcc) of lattice constant a. Let's cut this bulk along the (110) plane and expose the Cu(110) surface to the vacuum. My question is: which are the x and y dimensions of a (1x1)...
Homework Statement
i've been asked to compare the efficiency of a photo voltaic cell and a solar heating cell (an array of pipes). both will be exposed to a 150W bulb for an equal amount of time.
Homework Equations
for photo cell: P=IV
for heating panel: P=fcT f=flow rate...
Homework Statement
I am asked to plan a practical to determine the power output of a solar cell, i.e how much light energy is converted toe electrical energy per second. Now I thought(obviously) to just connect voltmeter across it with an ammeter and use PVI, however thinking about it, I don't...
Homework Statement
Basically, my task is to find out the internal resistance of a solar cell. I set-up a circuit as seen here (http : / / mt14 . quickshareit . com / share / picture666d18 . png), and measured the Current and Voltage on different settings of resistance in 5Ohm intervals from...
I'm told that ethanol crosses a cell membrane very easily and can screw up the inner workings of the cell. But ethanol is very hydrophilic, so shouldn't it have a really tough time crossing a phospholipid membrane? does it hijack a transport protein or something?
1. Can HIV attach itself to a muscle cell or a skin cell?
It seems that HIV attacks the immune system mainly by damaging the CD4 (also known as T4 or T-helper) cells which help the body fight off diseases.
But I don't think that is the correct answer to this question. Theoretically...
Homework Statement
Given the following half-reactions:
Ce4+ + e− → Ce3+ E° = 1.72 V
Fe3+ + e− → Fe2+ E° = 0.771 V
A solution is prepared by mixing 9.0 mL of 0.30 M Fe2+ with 7.0 mL of 0.11 M Ce4+.
1. What is the potential of a platinum electrode dipped into the resulting...
Homework Statement
Cell membranes (the walled enclosure around a cell) are typically about 7.5 nm thick. They are partially permeable to allow charged material to pass in and out, as needed. Equal but opposite charge densities build up on the inside and outside faces of such a membrane, and...
Hi guys,
Some background : I'm in the early stages of my first semester of High School Biology and I'm already having some problems coming to terms with the basics. Our original teacher was in car accident over break so we're stuck with a sub, who's a spanish teacher and completely hopeless...
Dear all,
i am possible to do experiment on the application of solar cell and i have run into several problems so i need to seek advice from all the experts in here. I have several DC loads include:
1 x Cooler fan (12V, 0.25A)
1 x cooler fan (12V, 0.2A)
2 x rechargable AA size battery...
I had some questions...
1. How come garlic extract increases the hayflick limit?
http://www.smartskincare.com/aging/aging-mechanisms_cellular-clock.html
2. How come feeding the cell more results in its growth in size?(if that's so then why don't liver cells grow?)
3. I have read...
I am looking to make an automated feeder system using hoppers. The first design used 50lb single ended load cells. However, a side load was accidently applied to the system and the load cell was rendered inoperable. i am not worried about the accuracy of the system when a side load is applied, i...