discovered by Alexander Fleming in 1928 and it saved several lives including our soldiers but have we abused this medical miracle? However‚ it is imperative for our civilization to understand how penicillin was invented‚ the war it saved‚ and the resistance that it has sir come. Alexander Fleming was born in Ayshire in the lowlands of southwestern Scotland (Sir Alexander Fleming-Biography). Fleming was obsessed with the body’s fight with infection and he became a professor at St. Mary’s Hospital
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series circuit only has one path for current to flow. 3) The sum of all the voltages sources is equal to the sum of all the voltage drops. 4) The total resistance in the circuit is equal to the sum of the individual resistances. 3. Calculate the total resistance in the circuit below. Show the formula used. Calculated: = __6.5kΩ____ (Total resistance) Rt = R1+R2+R3 = 1kΩ + 3.3kΩ + 2.2kΩ = 6500 x 10^3= 6.5kΩ 4. Download the Multisim file “Series1” from Doc Sharing‚ Week 3. Run the simulation and
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No one likes to lose. A fight‚ an argument - or freedom. Peaceful resistance to laws allows people to exercise autonomy and publicize opinions. Because the act of resisting governmental orders itself requires freedom‚ any resistance contributes to a free society. Certain people are against the promotion of liberty for particular groups. Ideas such as voting rights‚ affirmative action‚ and the current debate of gay marriage all extend freedoms to minority groups. The people who are against these
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Variation of Conductance with Temperature in Electrolytes Index 1.Certificate.................................................................3 2.Acknowledgements.....................................................4 3.Aim..........................................................................5 4.Apparatus..................................................................6 5.Important Terms........................................................7 6.Conductivity...
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Plant Watering System The whole circuit is based on IC CA3140 which is basically an operational amplifier which can unite the voltage PMOS transistors to the high voltage bipolar transistor on particular chip. LDR (Light depending resistor ) whose resistance is based upon the quantity of the light declining on it along with a few more components. Circuit Diagram of Automatic Street Light Controller Switch Circuit using Relays and LDR is given below. Automatic Street Light Controller Switch Circuit
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conductance and resistance? They are the reciprocals of one another. 2. What is the symbol for mhos? ______upside down omega sign (Ω)___ 3. What other unit‚ other than mhos‚ can conductance be measured in? What is its symbol? Siemens‚ S 4. What is the total resistance of a circuit with three parallel resistors with the values below? Gt= G1+G2+G3= 0.5mS+0.25mS+0.75mS= 0.0015 x 10^-3= 1.5mS Rt= 1/Gt= 1/1.5mS= 667Ω 5. Use the reciprocal method to calculate the total resistance of the circuit
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Quantities 2 Units 3 Factors Affecting Resistance 4 Length of the Conductor: 4 Area of Cross-Section of the Conductor: 4 Electrical Resistivity of Substances 5 Effect of Temperature 5 Components of Electrical Circuits 6 Components of an Electric Circuit 7 Measuring Current‚ Voltage and Resistance 8 Measuring voltage 8 Measuring current 9 Measuring resistance 9 Ohm’s Law‚ Electricity 10 Definition of Ohm 11 Unit of resistance is ’ohm’ 11 Statement of Ohm’s Law 11 Ohm’s
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from As-contaminated groundwater Mahima Rani and Pinaki Sar* Department of Biotechnology‚ Indian Institute of Technology‚ Kharagpur‚ West Bengal–721302‚ India mahima06bt11@gmail.com‚ Ph: +91 8348523016 Abstract Role of plasmids in conferring resistance to several heavy metals and antibiotics to naturally occurring bacteria is well known. In contaminated environments‚ presence of metal resistant genes on plasmids often provide the other bacteria within the same niche to acquire the necessary genes
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could exhibit artificial competence with calcium chloride treatment (Mandel and Higa‚ 1970). Transformation of plasmid DNA would give the cell a nonessential gene‚ like resistance to antibiotics. Ampicillin is a toxin that causes bacterial cells to lyse by hindering cell wall synthesis. The selectable marker is the Ampicillin Resistance gene that codes beta-lactamase enzyme which breaks down the antibiotic. The transformed E. coli cells will be able to thrive in an ampicillin environment. The purpose
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design a circuit that will do what you want it to? This guided activity will introduce you to some components‚ tools‚ and concepts that are fundamental in electronics. It will allow you to investigate and discover: What are voltage‚ current‚ and resistance? How are they related to one another? What are some of the basic components that make up simple circuits and what do they do? What are the important characteristics of a circuit and how do I measure different parts of a circuit? How do I measure
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