Savannah Booker‚ Dubie Dubin Research Plan Problem: What is the effect of gasoline fumes on bean plant growth? Hypothesis: If the bean plants are exposed in the presence of gasoline fumes for a longer period of time‚ then the plants will die more quickly. Procedures: 1. Place ten bean plants in each of five Rubbermaid clear plastic containers. 2. Let the bean plants sit for one week without being manipulated. 3. Leave the first container alone without manipulation.
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CHAPTER 1 Introduction Background of the Study Air is a precious resource that most of us take for granted. Air supplies us with oxygen‚ which is essential for our bodies to live. Without it‚ we would die within minutes. Pure air is a mixture of several gases that are invisible and odourless. It consists of about 78% nitrogen‚ 21% oxygen‚ and less than 1% of argon‚ carbon dioxide‚ and other gases — as well as varying amounts of water vapour. Pollution is one of the major problems of our country
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Old Big Red When I look out the window and say out loud with a boasting voice “there is Old Big Red”‚ most folks will not know what I am talking about. Hearing what I just said‚ my youngest granddaughter‚ Jenifer‚ asks grandpa‚ “Who is Old Big Red?” With a big smile quickly growing across my face‚ I tell her that Old Big Red is not a who‚ but Old Big Red is a what. I say to her‚ come on over here and sit on my knee “let me tell you about Old Big Red.” I want you to know that Old Big Red is a passion
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Display for the Virginia Museum of Science Digital Communications Date Submitted: 6 October 2002 Independent Research Project EE 491 Digital Communications Cadets: Joseph Wunder Brian Holt I. Introduction Many electronic devices today communicate with each other externally and internally. The information in these devices can be numbers‚ words‚ sounds‚ and pictures. The simplest form of this information is digital one’s and zero’s. Sequences of one’s and zero’s are used by electronic
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indication of the voltage. Circuit description The circuit uses an analogue-todigital converter ICL7107 made by INTERSIL. Fig. 1 shows the pin detail of IC L7107. This IC incorporates in a 40-pin case all the circuitry necessary to convert an analogue signal into digital and can drive a series of four seven-segment LED displays directly. Parts List Semiconductor: IC1 - ICL7107 3½ digit analogue-to-digital converter IC2 - 7805 +5V regulator IC3 - 7905 -5V regulator DIS1-DIS4 - LTS542 CA seven
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OBSERVATION The modicom 1 board‚ first in my observation is the power input these are the electrical input connections necessary to power the module. The LJ Technical Systems’ "I.C. Power 60" or "System Power 90" is the recommended power supplies. Then second is the sampling control logic is the circuitry generates the timing and control signals that sample the input waveform‚ and also creates a sinusoidal 1 kHz signal for use during the MODICOM 1 practical exercises. It is recommended that this
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Controller” brings out basic idea behind monitoring the various parameters using an Analog to Digital Converter. Normally in an Analog digital converter there are eight channels the A/D converter used here is 0809. In which the selection of these channels can be done using their address lines A0‚ A1‚ A3. Methodology: Any analog received from another external hardware can be amplified a given to A/D converters. Let us consider the analog inputs are given by the four different sensors ranging from 0-5v
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BIBLIOGRAPHY ....................................................................................................................... 14 ADC 3-bits Flash DURRMANN Antoine – GEAMBLU Clément 1 I- Introduction We have decided to design an one-step Flash converter. As shown in the schematic below‚ in this type of ADC the input signal is compared to the 2n nodes of resistors. At the output of the comparators‚ the sampled input value can be read in thermometer-code. At the beginning of this project‚ we were
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Abstract: This article covers the theory behind a Delta-Sigma analog-to-digital converter (ADC). It specifically focuses on key digital concepts of oversampling‚ noise shaping‚ and decimation filtering. Introduction Sigma-delta converters offer high resolution‚ high integration‚ and low cost‚ making them a good ADC choice for applications such as process control and monitoring. The analog side of a sigma-delta converter (a 1-bit ADC) is very simple. The digital side‚ performing filtering and decimation
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channel can be used for increasing the channel performance. It also analyzes‚ quantifies‚ and compare two alternative RF cancellation strategies where reference signal is taken either from TX power amplifier (PA) input or output. Analog to digital converter (ADC) is used in addition to linearity analysis. The quantization noise of the ADCs is another significant problem and the increase in maximum transmits power can also cause the nonlinear distortion. In this project‚ it is shown that‚ with digitally
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