Ion Implantation
Assume that a 100 mm diameter GaAs wafer is uniformly implanted with 100 KeV zinc ions for 5 minutes with a constant ion beam current of 10 μA. What is the ion dose per unit area and the peak ion concentration?
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Let’s consider an electrical current through a single ion channel, as shown in the following figure. We start by treating an ion channel as a cylindrical pore through the cell membrane. The channel is...
Let’s consider an electrical current through a single ion channel, as shown in the following figure. We start by treating an ion channel as a cylindrical pore through the cell membrane. The channel is of length L ≈ 5 nm and is filled with water. The concentration difference of Na+ ions across the channel is Δc ≈ 100 mM. This concentration difference produces a flux of ions through the channel given by DΔc/L, where D is the diffusion constant for...
4. Assume a 15 cm diameter wafer has a cost of 12, contains 84 dies, and...
4. Assume a 15 cm diameter wafer has a cost of 12, contains 84 dies, and has 0.020 defects/cm2. Assume a 20 cm diameter wafer has a cost of 15, contains 100 dies, and has 0.031 defects/cm2 a) Find the yield for both wafers. b) Find the cost per die for both wafers. c) If the number of dies per wafer is increased by 10% and the defects per area unit increases by 15%, find the die area and yield....
28. An initially 1.8 M aqueous solution of a weak monoprotic acid has a total ion...
28. An initially 1.8 M aqueous solution of a weak monoprotic acid has a total ion concentration has a total ion concentration of 8.45 x 10-3 M when equilibrium is established. What is the acid-ionization constant, K of the weak acid? (assume n a. 3.3 x 10-2 b. 6.8 x 10-2 c. 1 x 10-5 d. 7.1 x 10-5 e. 2.7 x 100
Name BIOL 4360 Assignment/Quiz 3 (15 pts) The following data were obtained from the cells of...
Name BIOL 4360 Assignment/Quiz 3 (15 pts) The following data were obtained from the cells of a rat. ME Ion Intracellular Conc Extracellular Cone Non-excitable cells Excitable cells (mM) 100 10 20 (hepatocytes)(neurons) (mM) 10 100 200 Na CI 0 0 0.1 0.5 1. Calculate the membrane potential. SHOW ALL CALCULATIONS (2 pts). 2·This membrane potential is the electrical force that develops on the membrane to counter the movement of which ion down its concentration gradient (2 pts)? 3. How...
SHOW YOUR WORK, PLEASE WRITE LEDGIBLY AND CLEARLY 1. Patch clamp recording of a single ion...
SHOW YOUR WORK, PLEASE WRITE LEDGIBLY AND CLEARLY 1. Patch clamp recording of a single ion channel yields the following results: Holding Potential Measured Current (mV) 100 50 (pA) 1.0 0.0 +50 +100 +2.0 +3.0 A) Draw a graph of the current (on the vertical axis)-voltage relation for this channel. B) What is the electrical resistance (in ohms) of this channel? (keep in mind mVa 103 volts, pA 101 amperes, and an ohm is a derived unit that is equivalent...
please explain steps and show work no pictures were provided. table 3.13 is given above. 3.46...
please explain steps and show work
no pictures were provided. table 3.13 is given above.
3.46 The cell membrane is covered with protein complexes called Na-K+ pumps. Each pump moves 3 Nations from the intracellular space to the extracellular milieu for every 2 K ions it moves into the cell. During normal function, the pumps work constantly. Under normal conditions, there is a gradient of Nat and K ions between the cell and the extracellular space; the concentrations of these...
Question 2 (25 marks) A square wood platform of side-length L = 2.4 m rests on...
Question 2 (25 marks) A square wood platform of side-length L = 2.4 m rests on masonry walls. The deck of the platform is constructed of 4 cm thick planks supported on two beams which are 2.4 m long. The beams have a width of 100 mm and height of 150 mm and are supported at their ends by the walls. The structure is designed to support a uniformly distributed load, wA (kN/m2), acting over the entire top surface of...
2. A 10-minute unit hydrograph (UH) of a catchment is given in the table below. What...
2. A 10-minute unit hydrograph (UH) of a catchment is given in the table below. What is the catchment area? (5 marks) Time step (10 minutes) 1 2 3 4 Discharge (mº/{s.cm)) 8 18 30 10 For a storm partern given in the table below, determine and plot runoff hydrograph at a 5-minute interval using the above 10-minute UH. Determine the time of concentration of the catchment. Assume the o index value for the catchment to be 12 mm/hr, and...
3. 10 points. Calculate the amounts (kg, 100% basis) of H2SO4 and NaOH required in a dual bed ion exchange system to re...
3. 10 points. Calculate the amounts (kg, 100% basis) of H2SO4 and NaOH required in a dual bed ion exchange system to remove the calcium and chloride ions in 1000 m3 of water containing 100 mg CaCl2/L. Assume 100 % efficiency of chemical usage (which is not correct). Hint: use one mole of H2SO4 per mole of Ca, and one mole of NaOH per mole of Cl 4. 5 points. Using Eq. 4-17 (shown below) calculate the dose of calcium...
Clayton Campus- R... Unit Guide Manager Current students- ENG1001-Lighter.. SISys NGT001 Q1: Ans: I113.5...
Clayton Campus- R... Unit Guide Manager Current students- ENG1001-Lighter.. SISys NGT001 Q1: Ans: I113.5x10 beam centre mm max compress stress = 358MPa at A/D, max tension stress 286 MPa at QUESTION 2 A concrete slab, 300 mm thick, 3 m wide and 4 m long, is used to support a characteristic live load of 4 kN/m2. It has two service ducts (holes) of diameter 100 mm equally spaced along its width. The concrete slab with ducts is simply supported by...
4. Assume a 15 cm diameter wafer has a cost of 12, contains 84 dies, and has 0.020 defects/cm2. Assume a 20 cm diameter wafer has a cost of 15, contains 100 dies, and has 0.031 defects/cm2 a) Find the yield for both wafers. b) Find the cost per die for both wafers. c) If the number of dies per wafer is increased by 10% and the defects per area unit increases by 15%, find the die area and yield....
28. An initially 1.8 M aqueous solution of a weak monoprotic acid has a total ion concentration has a total ion concentration of 8.45 x 10-3 M when equilibrium is established. What is the acid-ionization constant, K of the weak acid? (assume n a. 3.3 x 10-2 b. 6.8 x 10-2 c. 1 x 10-5 d. 7.1 x 10-5 e. 2.7 x 100
Name BIOL 4360 Assignment/Quiz 3 (15 pts) The following data were obtained from the cells of a rat. ME Ion Intracellular Conc Extracellular Cone Non-excitable cells Excitable cells (mM) 100 10 20 (hepatocytes)(neurons) (mM) 10 100 200 Na CI 0 0 0.1 0.5 1. Calculate the membrane potential. SHOW ALL CALCULATIONS (2 pts). 2·This membrane potential is the electrical force that develops on the membrane to counter the movement of which ion down its concentration gradient (2 pts)? 3. How...
SHOW YOUR WORK, PLEASE WRITE LEDGIBLY AND CLEARLY 1. Patch clamp recording of a single ion channel yields the following results: Holding Potential Measured Current (mV) 100 50 (pA) 1.0 0.0 +50 +100 +2.0 +3.0 A) Draw a graph of the current (on the vertical axis)-voltage relation for this channel. B) What is the electrical resistance (in ohms) of this channel? (keep in mind mVa 103 volts, pA 101 amperes, and an ohm is a derived unit that is equivalent...
please explain steps and show work
no pictures were provided. table 3.13 is given above.
3.46 The cell membrane is covered with protein complexes called Na-K+ pumps. Each pump moves 3 Nations from the intracellular space to the extracellular milieu for every 2 K ions it moves into the cell. During normal function, the pumps work constantly. Under normal conditions, there is a gradient of Nat and K ions between the cell and the extracellular space; the concentrations of these...
Question 2 (25 marks) A square wood platform of side-length L = 2.4 m rests on masonry walls. The deck of the platform is constructed of 4 cm thick planks supported on two beams which are 2.4 m long. The beams have a width of 100 mm and height of 150 mm and are supported at their ends by the walls. The structure is designed to support a uniformly distributed load, wA (kN/m2), acting over the entire top surface of...
2. A 10-minute unit hydrograph (UH) of a catchment is given in the table below. What is the catchment area? (5 marks) Time step (10 minutes) 1 2 3 4 Discharge (mº/{s.cm)) 8 18 30 10 For a storm partern given in the table below, determine and plot runoff hydrograph at a 5-minute interval using the above 10-minute UH. Determine the time of concentration of the catchment. Assume the o index value for the catchment to be 12 mm/hr, and...
3. 10 points. Calculate the amounts (kg, 100% basis) of H2SO4 and NaOH required in a dual bed ion exchange system to remove the calcium and chloride ions in 1000 m3 of water containing 100 mg CaCl2/L. Assume 100 % efficiency of chemical usage (which is not correct). Hint: use one mole of H2SO4 per mole of Ca, and one mole of NaOH per mole of Cl 4. 5 points. Using Eq. 4-17 (shown below) calculate the dose of calcium...
Clayton Campus- R... Unit Guide Manager Current students- ENG1001-Lighter.. SISys NGT001 Q1: Ans: I113.5x10 beam centre mm max compress stress = 358MPa at A/D, max tension stress 286 MPa at QUESTION 2 A concrete slab, 300 mm thick, 3 m wide and 4 m long, is used to support a characteristic live load of 4 kN/m2. It has two service ducts (holes) of diameter 100 mm equally spaced along its width. The concrete slab with ducts is simply supported by...
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