Abstract There are many methods employed to precipitate proteins out of solution. In this experiment we manipulated many physical and chemical variables in order to achieve purification of a protein via precipitation. In the first part of the experiment we purified the protein casein by modifying it’s pH. In the second part of the experiment we manipulated the ionic strength of albumin in egg whites‚ in a process called salting out. By manipulating these chemical properties we were able to
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Attenuation Effects on Data Transmitted through Cable Abstract Attenuation refers to any reduction in the strength of a signal. Attenuation occurs with digital or analog signals. Attenuation is the end result of signals being transmitted extended distances. Attenuation is usually expressed in units called decibels (dBs). The cable type will determine at what point along the length of the cable signal degradation occurs. Repeaters can be inserted along the length of the cable to boost
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REMOTE CONTROLLING OF HOME APPLIANCES ABSTRACT The main aim of conducting this project is to control a maximum of eight electrical appliances by just using a TV remote. Normal IR circuits can switch only one device. But using this circuit‚ different devices can be controlled using same remote with different switches. In this circuit‚ we interfaced 8 devices. These devices are switched using remote keypad -1 to 8. AT89C51 microcontroller is used to control the inputs and
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Introduction Aim of the project Block diagram Components used Rectifier diodes Transistor 78XX regulator IC NE 555 Timer IC Resistor Capacitor Relay Circuit diagram Circuit operation Applications Advantages Disadvantages Limitation Future scope Conclusion Bibliography Introduction: We have seen many more times that our street light were turned On even inday time also. This shows that we are wasting much power even it may be saved and supplied for any crop fields for several hours. Here
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These days‚ in many homes‚ it is virtually impossible to have a so called modern kitchen‚ without having a microwave oven in it. The microwave oven could probably occupy the second place (after the refrigerator)‚ in terms of dependence‚ in the kitchen. This magical piece of technology has revolutionized the way people‚ and the food industries cook food. The microwave oven is only a natural evolution of technology; to fit into this fast-paced world. As in every evolutionary process‚ one must look
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In this assignment‚ we are assign to construct a 2 button type Ac motor control system. The 2 type button means that there are only 2 buttons which is the stop button and the forward button. The successful build the whole system‚ a few component are very critical in this system. Circuit breaker First is the circuit breaker. Circuit breaker is a switch which is designed to prevent damaging the circuit when there is over load or short circuit. But the circuit breaker works differently compare
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The Effect of Microwave Radiation On the Germination of Eggplant (Solanum melongena) A Research Proposal Presented to the Faculty and Staff of Solano High School By Kristine Jocel Micu Charmane Jae Dacumos Ivory Pearl Taberna Researchers Mrs. Melba Agravante Research Teacher ACKNOWLEDGEMENT This scientific research proposal was accomplished because of the following people to whom the researcher is fully indebted: Mrs. Regimel Rosana‚ Biology teacher‚ for her productive
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resonant chamber; resonant element; rhumbatron; tuned cavity; waveguide resonator. an oscillatory system that operates at superhigh frequencies; it is the analog of an oscillatory circuit. The cavity resonator has the form of a volume filled with a dielectric—air‚ in most cases. The volume is bounded by a conducting surface or by a space having differing electrical or magnetic properties. Hollow cavity resonators—cavities enclosed by metal walls—are most widely used. Generally speaking‚ the boundary
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electromagnetic wave of wavelength λ is incident on a dielectric surface‚ part of the electromagnetic wave is reflected‚ and part of it is transmitted. If the dielectric is thin‚ i.e. its thickness t is comparable to λ‚ the plane electromagnetic wave will be reflected again at the second dielectric surface‚ as shown in Figure 1. [pic] Figure 1. Electromagnetic waves incident at angle θ1 reflected from the top and bottom surfaces of a thin dielectric film of thickness t‚ and refractive index n.
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Alessandro improved and popularized the electrophorus which is an invention made by Jonah Carl Wilcke. The electrophorus consists of a dielectric plate; it is an electrical insulator and a metal plate with an insulating handle. It works by the dielectric plate being charged through the triboelectric effect by rubbing it with fur or cloth. The dielectric gains create negative charge by rubbing together.
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