and is affected by the magnitude and direction of the current flow. It works by placing electrodes on the skin as the body is a good conductor of electricity. There are leads attached to an amplifier within the machine‚ which must be clipped to the edge of the electrodes. The ECG is recorded from 12 different electrode sites. The amplitude and the shape of the signals depend upon the position of the electrodes (Brown‚ 1999) (Conover‚ 1992). The SA node produces the pacemaker potential and if this
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directly transferred between the oxidizing and reducing agents. A salt bridge must be used to avoid polarization of the electrodes by facilitating the circulation of ions from electrolyte. Each electrode is connected to the voltmeter by clips and wires. The voltmeter measures the voltage generated by the redox reaction. The voltage reading will be positive when the electrodes are connected properly for spontaneous reaction. A redox reaction occurs when the species with higher reduction potential
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the chamber is connected to a power supply and an electrical current is applied to the gel. The chamber is designed with a positive electrode (anode) at one end and a negative electrode (cathode) at the other end. Molecules with a net negative charge migrate toward the positive electrode and molecules with a net positive charge migrate toward the negative electrode because opposite charges attract. The overall charge of a molecule affects the speed at which it travels through the gel. Highly
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problems etc. The next part strives to discuss about the Welding Business of Linde Bangladesh as well as the Distribution department of the welding business with its major functions.Linde Bangladesh is a leading manufacturer of welding electrodes and provides one stop solution for cutting and joining through countrywide distribution network. Countrywide the company has 18 sales centre based at different locations to serve more than 800 dealers. Country as a whole is demarcated into five
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Determining Standard Reduction Potentials‚ Equilibrium Constants and Investigating a Lead-Acid Electrolytic Cell Purpose Experimental Methods All procedures were followed according to the lab manual (experiment 10 – Electrochemistry Laboratory). Data and Observations Part A: Grams of FeSO4 used: 0.759 Voltage during voltmeter and battery check: 9.23V Table 1. Electrochemical Cells Data Part B: Table 2. Lead-Acid Battery Results and Calculations In order to make
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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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trauma effects during the cochlea placement of the electrodes (Skarzynski & Fayette 2010). The cochlear idea has revolution in the way in the patients
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a branch of chemistry that studies chemical reactions which take place in a solution at the interface of an electron conductor (a metal or a semiconductor) and an ionic conductor (the electrolyte)‚ and which involve electron transfer between the electrode and the electrolyte or species in solution. If a chemical reaction is driven by an external applied voltage‚ as in electrolysis‚ or if a voltage is created by a chemical reaction as in a battery‚ it is an electrochemical reaction. In contrast‚ chemical
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GASEOUS DISCHARGE LAMPS: A gaseous discharge lamp is essentially a glass or quartz envelop containing two electrodes and a small quantity of gas or vapour at a low pressure. In these lamps light is obtained by applying an electric potential difference to a gas or vapour contained by the lamp under a suitable pressure. Due to application of electric potential difference gas gets ionised and an electric current flows; the tube is filled with a luminous discharge. The light spectrum
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Introduction MIG (Metal Inert Gas Welding) or Inert Gas Welding. In the process the electrodes are melted and mixed with molten parent metal to form a weld pool. Thus‚ the electrode must be supplied constant current throughout the welding process is carried out. For a continuous supply of electrodes‚ the electrodes are made in the form of wire to be extended out from the nozzle welder automatically at a specified speed. Protective gas is supplied through the nozzle weld as is done in TIG welding
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