Cell Definition and 956 Threads

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.

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  1. S

    One time event:eukaryotic cell from prokaryotsl?

    The linked abstract from a recent article in Nature suggests that eukaryotic cells evolved form prokaryotes in a one time event and that prokaryotes show no tendency to evolve toward greater complexity. This would suggest that complex terrestrial type life forms might be extremely rare in the...
  2. G

    Unit Cell - Linear Density - BCC & FCC

    Unit Cell -- Linear Density -- BCC&FCC Homework Statement Calculate the linear density for the most densely packed directions in BCC and FCC. Note the difference in linear density. Note the difference in linear density. Homework Equations LD = #of atoms/length The Attempt at a...
  3. R

    Recharging an electrochemical cell

    If you want to recharge an elctrochemical cell, which electrode do you supply with more electrons? My thinking was: There was a P.D. between the elctrodes but now that the cell is spent, the P.D. is lower. To create a P.D. again, you must make the negative electrode more nagative or the...
  4. D

    MATLAB First time with matlab, inputting cell arrays into function?

    Hi I am currently trying to program something that will accept a vector as input for one my function. However, this is my first time programming, and I am relying completely on the internet and the Chapra textbook for help. This is what I have so far: %Re=reynolds number %p = density of...
  5. Z

    How do voltaic cells generate ions without a salt bridge?

    There is something that I just can’t seem to understand about the operation of a voltaic cell. I have a question and it would be great if someone could explain to me in detail and help clear it up for me. Let’s take for example a simple zinc and copper electrode immersed in their sulfate...
  6. C

    Help Undersanding The Voltaic Cell

    Alright, so I understand how it works, except that, I don't get how zinc metal reacts with aqueous copper (II) ions if they are completely separated by two jars. How can a copper (II) ion pull the electrons from solid zinc when it can't even physically collide with zinc?
  7. M

    Unit cell dimensions of crystal structure

    Hello all, I already have the answer to my question, but what I would like to know is why. My question is: why in the question below is the plane 111 used to find ao and not another plane? An ordered compound of NiAl has a cubic structure with one formula unit/cell. One Al atom at...
  8. J

    Fabrication of Single GaAs Solar Cell by MBE

    Fabrication of Single Junction GaAs Solar Cell by MBE Hi All, My project is to produce 1 single piece of GaAs solar cell (about the size of 1cm square) by MBE technique. I have gone through some read up and simulation software software called atlas by silvaco. for time being, I am testing on...
  9. C

    Is it Possible to Build a Direct Borohydride Fuel Cell

    Basically as the title says, is it possible to build a DB fuel cell stack? Something that could output 100W (to power a laptop or for power outages). I actually have access to a couple of kilos of sodium borohydride and while looking at what I can do with the stuff I came across this type of...
  10. M

    How Does a Security Gate Use Your Cell Phone to Open?

    Security Gate + Cell Phone = ? OK guys, I have a "how does this work" question. I just moved into a new apartment which has a security gate. Now, aside from a few traditional means of opening, it has a rather unusual method, which I cannot figure out how works. My phone number was entered...
  11. G

    Plating Eyeglasses: How Long for 0.5g Gold/Copper?

    "bar of gold or copper placed in acidic solution, attached via battery to item to be plated. Eyeglasses plated placed in solution, voltage applied to create electrolytic cell, which plates material." 1. Total amount of gold to deposit on glasses made of aluminum = 0.5g. How long should the...
  12. RonL

    Solar Cells: Info, Cost, Quality & Sources for Home & Garden Projects

    What started as a simple project, has become an out of control line of thought and a possible distraction, but one I think is worth picking up again. Several years ago I looked into the cost of solar for my home and the rebate that the city was offering for an approved installation. The cost of...
  13. S

    How Does the Mitotic Spindle Influence Organelle Division During Cell Mitosis?

    Hello everyone, When a cell divide, do the organalles divide, or does DNA divide first, and using that DNA information new cells synthesize organalles. Thanks :smile:
  14. Pythagorean

    Major internal diff: single cell vs. multicellular

    What are some of the major (if not the major) difference(s) between the inside of a single specialized cell (like a muscle cell or a skin cell) and a single-celled organism. Does a single-celled organism have the capacity to make more "decisions" than a muscle cell?
  15. J

    Progencell Stem Cell Therapy Aides Doctor Diagnosed with Parkinsons

    When Dr. José Luis Salgado Ruiz was diagnosed with Parkinson's disease nearly six years ago, he thought his career and his future were over. Parkinson's Disease, also known as PD, is a neurodegenerative condition that affects the central nervous system. The condition causes tremors, slowed...
  16. L

    Do you think cell phones pose a health risk?

    I have a few questions/thoughts about microwaves ovens and cell phones that I'm hoping someone here can help with. Microwaves ovens and cell phones both use around the same range of frequencies. But microwave ovens use way more power. Ovens about 500W, cell phones at most 2W. More power...
  17. S

    CO2 gas diffusion into a cell factory

    I have to pick the best cell culture vessel: For my experiments, the vessel initially contains 0% CO2. Then it's placed in an incubator set to 37 degreesC and 5% CO2. There is a 1 micron filter i can attach to a port in the vessel that can be 10mm wide or a .2 micron filter can be attached to a...
  18. J

    How Much Pressure to Open Plant Cell Stomata?

    Can someone explain to me how much pressure it would take to open the stomata of a plant cell?
  19. E

    How can I improve the accuracy of my load cell signal output?

    Howdy, I am a mechanical engineering student with limited circuitry knowledge to start... Anyhow I have a [-500,+500]lbf load cell that is essentially a wheatstone bridge strain gauge. I want to give it either 9Vdc or 12Vdc excitation voltage since I have a regulated power supply that can...
  20. T

    Couple of questions on the behaviour of a Solar CEll

    Hey guys, Homework Statement Im doing my physics coursework atm and its on the subject of Solar cells and am changing a few variables and observing how the voltage of the solar cell changes. I am also measuring the current and using that to calculate the Power output. the caluclations are...
  21. S

    Question on solary cell etc very simple

    what is the difference between solar cell, solar array, solar panel? aren't all of them the same?
  22. A

    How is the EMF of a Galvanic Cell Calculated?

    Homework Statement What is the emf of the galvanic cell Al(s)[Al+3(aq .18mol/liter) [] Fe+2(aq .85mol/liter)[Fe(s) Homework Equations The Attempt at a Solution Al(s) ---> Al+3 + 3e E=-1.676 V Fe+2 + 2e ---> Fe(s) E=-.440V How do we proceed after this...
  23. N

    MATLAB Student's Innovative Solar Cell Project Using MATLAB

    For a junior design project i heard about a student using MATLAB to help operate a solar cell. Basically the sensors detected the light and shifted the p.v.cell into the lights direction, if you were to move light then cell would get re-adjusted. I guess my question is that I am not sure how...
  24. O

    Generating Electricity with HHO Gas: What Fuel Cell?

    Is there a way to make the atoms in HHO gas (Browns gas) to separte into it's elements; so the Hydrogen atoms go one way and the Oxygen in another way. By doing this I'm hoping to generate electricity from the reaction by bringing them together again. What kind of fuelcell do I need?
  25. J

    Calculating Ionic Radius of Chloride Ion in LiCl (NaCl Structure)

    Q.The unit cube length of LiCl (NaCl structure) is 5.14 amstrong . Assuming anion-anion contact, calculate the ionic radius for chloride ion. How to assume anion-anion contact ? Can anyone help with a 3D figure?
  26. J

    Current electricity and terminals of a cell

    when the terminals of a single cell are connected by means of a conducting wire with no resistor component is there a current flow through the wire ? jus started with current electricity have a lot of doubts thanks for any help
  27. Gokul43201

    Bacterial Cell with a Chemically Synthesized Genome

    http://www.sciencedaily.com/releases/2010/05/100520131435.htm Sounds really neat! Reference: D. G. Gibson et al "Creation of a Bacterial Cell Controlled by a Chemically Synthesized Genome" Science, May 20, 2010 (DOI: 10.1126/science.1190719) Link...
  28. C

    Average Radius of a Unit Cell: Na

    What is the average radius for a unit cell, for example, for Na? Is it the average of the ionic radii for the different coordination numbers (weighting each coordination number the same)? Or would it be the covalent radii or something else?
  29. N

    Help Anna Find Multijunction Solar Cell Articles

    Hi everyone, I'd like to prepare a presentation about solar cells. I need a few articles about multijunction solar cells from popular magazines. If you can help me, please, post there links for these articles. Thank you, Anna
  30. S

    Fuel Cell Efficiency: Average Output for Cars, Homes, & More

    I understand that generating the hydrogen that powers a typical fuel cell is (prohibitively?) energy intensive at this point, but I was curious about the following: Assuming a sufficiently efficient catalyst was obtained that allowed large-scale production of pure hydrogen without...
  31. L

    What is the Importance of Cell Differentiation?

    Homework Statement What is the Importance of Cell Differentiation in the formation of tissue? Homework Equations N/A The Attempt at a Solution I know that cell differentiation is the process in which a generic cell develops into a specific type of cell, but could you please explain...
  32. S

    Help Needed on 12 Transistor CMOS SRAM Cell Schematic

    I am looking for help on a schematic for a 12 transistor CMOS SRAM cell shown below. I understand how to implement the inverter and transmission gates and how a tri state inverter works, but I am confused when it comes to inverting the input of the buffer and how to tie it all together. Thanks...
  33. B

    Nickel-penny composition for voltaic cell

    I was organizing pennies into categories based on what they were composed of; before 1982 (I believe) pennies were made out of 95% Cu, and after they were made primarily out of zinc. I thought that the ideal penny for a voltaic cell would use a Copper penny, and a Nickel. However, I found that...
  34. P

    Elementary crystal cell or the whole crystal?

    Is fullerene C_{60} elementary crystal cell or the whole crystal? I do not clearly understand it fom the context? Why is considered most perfect point symmetry form?
  35. 4

    Finding cell emf in a concentration cell

    Question: A voltaic cell is constructed with two silver-silver chloride electrodes, each of which is based on the following half-reaction: AgCl(s) + e- = Ag(s) + Cl-(aq). The two cell compartments have [Cl-]= 1.41×10−2 M and [Cl-]= 2.70 M, respectively. What is the emf of the cell for the...
  36. R

    Mass difference of a charged and a drained battery cell

    Is there a difference between the mass of a battery cell which is charged and the one which is drained? If yes, is difference of the two values proportional to the total work done by the cell (including loss due to resistance), with c^2 as the proportionality constant?
  37. M

    MATLAB MATLAB: cell arrays of function handles

    Hello I am trying to store function handles in an array. First attempt was to do something like the following: for i = 1:5 r(i) = @(x) [grid(i) - x(1)*(x(2) + value(i))]; end So I would store 5 function handles, each one using the <5x1> vectors "grid" and "value". Result: Nonscalar...
  38. D

    How to find the mass of one cell using centrifuge data?

    Hi. I want to find the mass of one cell, using the data obtained during its centrfugal separation. Let me elaborate. I have a sample of cells. I have kept it in a test tube and used the centrifuge on it. Finally, I have 40k cells/ cc obtained near the rim of the test tube, at 150g setting...
  39. W

    Calculate Voltage From Solar Cell - No Temperature/Apparatus Needed

    How to calculate the voltage produre by solar cell ? Need temperature reading or other apparatus ?
  40. N

    Electrochemical Cell | 75W Bulb | 50min | 12V Battery

    Homework Statement A 75.0-W light bulb is powered by connecting it to a standard 12.0 V auto lead-storage battery. How much energy (J) is required to keep the bulb burning for 50.0 continuous minutes ? Assume 100 percent efficency.Homework Equations 1 watt = 1 J/s 1 J = 1 C x 1 V The Attempt...
  41. Saladsamurai

    Where Does Platinum Fit in Hydrogen Fuel Cells and Electrolysis?

    Hey folks, I am currently doing some research on hydrogen fuel cells as part of a project. I just wanted to clear up some confusion I am having with the whole *platinum issue.* Very generally speaking, this is what I have gathered on H2 Fuel cell vehicles: 1) Electrolysis is needed to...
  42. K

    Calculating Cell Potential at 25oC with Cu2+ and NaOH

    What is the potential of this cell ( in V) at 25 oC if the copper electrode is placed in a solution in which [Cu2+] = 5.1×10-10 M? I found this answer to be 0.065 which is correct. The second part: If the copper electrode of the above cell is placed in a solution of 0.270 M NaOH that is...
  43. K

    Can Fe2+(aq) Reduce Sn2+(aq) to Sn Metal?

    Is Fe2+(aq) capable of reducing Sn2+(aq) to Sn metal? The standard reduction potentials from my book are -0.14 for Sn2+ and -0.44 for Fe2+ Because Sn has a more positive Epot it has a greater tendency to be reduced. So add the Epot up: -0.14 + 0.44 (oxidation)= 0.3. It's positive...
  44. D

    What Should I Use For Solar Cell Dust Testing

    Hello! Right now I am trying to figure out how much of an affect dust has on the power production of some solar cells that I have. I was just searching for a possible material to use for dust testing. Anyone have any bright ideas?
  45. Char. Limit

    Prime Cell Phone Numbers: Oddity or Probability?

    I was playing with Wolfram|Alpha, and I typed in my ten-digit phone number. And it was prime! I have a prime cell phone number! Of course, I tried this with other numbers... my SSN isn't prime, and neither is my dad's phone number. My seven-digit phone number can be divided by two square...
  46. S

    Are ions always aqueous inside the cell? (simple question)

    Hello guys, So there are hydrogen ions inside the cell which is pumped out in cellular respiration. Now my question is when they say hydrogen ions are inside the cell are these actually dissolved in water, ions can not exist without being dissolved right, why is that they are so reactive...
  47. P

    Thermal Physics - Methane Fuel Cell

    I think I got a and b, the rest I did my best on, and I could use some guidance! Thanks!Homework Statement 1. [6] Methane (Natural Gas) Fuel Cell. Consider a fuel cell that uses methane as fuel. The chemical reaction is CH4 + 2O2 = 2H2O + CO2 + energy (a) [0.5] Measurements reveal that...
  48. B

    Which Electrode Builds Up Metal Precipitate in a Galvanic Cell?

    Homework Statement In a galvanic cell, the electrode that builds up a precipitate of metal (known as plating out) is: A. the cathode, and its surface is rich in positive charge. B. the anode, and its surface is rich in positive charge. C. the cathode, and its surface is rich in electrons. D...
  49. S

    Calculating Amperage of Voltaic Cells for Efficient Electrochemical Reactions

    Hello all, I am an AP Chemistry student currently studying electrochemistry. The other day, some friends of mine and I discovered some waste copper oxide laying around the lab. We thought, "Why not reduce all the copper out of this?", and so we set to work. We got our experiment...
  50. C

    How to Calculate the Theoretical Voltage of a PEM Fuel Cell?

    Hi, I'm working on a commercially available PEM fuel cell and I'm trying to calculate the theoretical voltage of the cell: The only electrochemical reaction considered is H2 + 0.5O2 --> H2O And I understand that I need to use the Nernst equation: E = EO - (RT / 2F) ln (PH2O / (PH2 *...
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