2.1.5. Arduino UNO: Arduino is an open-source project that created microcontroller-based kits for building digital devices and interactive objects that can sense and control physical devices. Arduino/Genuino Uno is a microcontroller board based on the ATmega328P. It has 14 digital input/output pins (of which 6 can be used as PWM outputs)‚ 6 analog inputs‚ a 16 MHz quartz crystal‚ a USB connection‚ a power jack‚ an ICSP header and a reset button. It contains everything needed to support the microcontroller;
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SYNTHETIC EXPLOITATION OF ENZYMES: BIOCATALYSIS IN ORGANIC SOLVENTS: FUNDAMENTALS ENZYMES IN ORGANIC SYNTHESIS 1. Enzymes catalyze a broad spectrum of reactions with high turnover numbers. Rate enhancements approach 1012 fold. 2. Enzymes may accept a wide range of substrates. 3. Enzymes are highly regio and stereoselective. 4. Enzyme reactions take place under mild conditions; this minimizes problems of isomerization and racemization. 5. Enzymatic processes are less hazardous and polluting
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capacitor Electrical double-layer capacitors (EDLC) are‚ together with pseudocapacitors‚ part of a new type of electrochemical capacitors[1] called supercapacitors‚ also known as ultracapacitors. Supercapacitors do not have a conventional solid dielectric. The capacitance value of an electrochemical capacitor is determined by two storage principles: Double-layer capacitance – electrostatic storage of the electrical energy achieved by separation of charge in a Helmholtz double layer at the
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Initially‚ they could find no satisfactory explanation for their observations‚ and considered the possibility that their signal may have been due to some undetermined systematic noise. They even considered the possibility that it was due to "a white dielectric substance" (ie pigeon droppings) in their horn! • However‚ it soon came to their attention through Robert Dicke and Jim Peebles of Princeton that this background radiation had in fact been predicted years earlier by George Gamow as a relic of the
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phase transformers connections. A three-phase transformer is constructed by winding three single-phase transformers on a single core. These transformers are put into an enclosure‚ which is then filled with dielectric oil. The dielectric oil performs several functions. Since it is a dielectric‚ a nonconductor of electricity‚ it provides electrical insulation between the windings and the case. It is also used to help provide cooling and to prevent the formation of moisture‚ which can deteriorate the
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optics‚ one must first understand photonic crystals: crystals which exhibit effects of photon-directing similar to the electron-directing effects of semi-conductor crystals. The resulting phenomena occur by the fact that photonic crystals have dielectric constants which are periodically modulated (causing effects such as varying refractive indices‚ as seen in the figure below). Photonic crystals can be fabricated‚ but they can occur in nature: like the commonly known gemstone‚ opal. Photonic
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skin. When the frequency is higher than 3000 MHz penetrates the skin and absorbed in the tissues increasing the body temperature. A core temperature rise of 2 /hr is estimated to occur in humans under a whole body SAR of 1- 4 w/Kg at 70 MHz. This heating of biological tissues could result in burns‚ cataract‚ possible detrimental effect on reproduction and even death. Mobile
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CHAPTER ONE 1.1 BACKGROUND TO THE STUDY Electronics has so much improved to the extent of applying its use to the health sector. In Africa there has been a very high infection rate of the malaria parasite due to the breeding environment conducive for its reproduction available in almost in all regions.About 3.3 billion people half of the world ’s population are at risk of malaria. In 2010‚ there were about 219 million malaria cases (with an uncertainty range of 154 million to 289 million)
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A parabolic antenna for Erdfunkstelle Raisting‚ based in Raisting‚ Bavaria‚ Germany. To direct microwaves in narrow beams for point-to-point communication links or radiolocation (radar)‚ a parabolic antenna is usually used. This is an antenna that uses a parabolic reflector to direct the microwaves. To achieve narrow beamwidths‚ the reflector must be much larger than the wavelength of the radio waves. The relatively short wavelength of microwaves allows reasonably sized dishes to exhibit the desired
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Assignment 2: Answer Sheet (LSM 1401 Semester 2 AY2011/12) Nucleic Acid Virtual Laboratories |Name | | |Matriculation number | | |A. DNA Extraction Virtual Lab [2 marks]
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