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Gas Chromatography
A Quick Historical Perspective
1903 Adsorption chromatography
1952 Gas chromatography (GLC)
1968 High performance liquid chromatography (HPLC)


Gas Chromatography
HPLC
Mobile phase changes
Constant temperature
Compounds partition from the mobile phase based on solubility.
Elution is generally time or volume dependent


GC
Mobile phase is constant
Increasing temperature
Compounds partition from the mobile phase based on volatility.
Elution ....etc

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1 Introduction
Chromatography is a powerful separation method that finds applications in all branch of science. Chromatography was invented and named by the Russian botanist Mikhail Tswett shortly after the turn of the last century. He employed this technique to separate various plant pigments such as chlorophylls and xanthophylls by passing solutions of these compounds through a glass column packed with finely divided calcium carbonate. The separated species appeared as colored bands on the column, which accounts fo ....etc

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hydraulic intensifier is a hydraulic machine to transform hydraulic energy at low pressure in a volume reduced to a higher pressure

Such a machine can be built by mechanically linking the two pistons, each working in a cylinder separated with a different diameter. As the pistons are mechanically connected, their strength and their stroke length are the same. If the diameters are different, the hydraulic pressure in each cylinder varies in the same ratio as their areas: the small piston giving birth at a pressure more high. When the pressure ....etc

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A washing machine (laundry machine, clothes washer, or washer) is a machine used to wash laundry, such as clothing and sheets. The term is mostly applied to machines that use water as opposed to dry cleaning (which uses alternative cleaning fluids, and is performed by specialist businesses) or ultrasonic cleaners.A washing machine is a machine that washes dirty clothes. It contains a barrel into which the clothes are placed. This barrel is filled with water, and then rotated very quickly to make the water remove dirt from the clothes. Most wash ....etc

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I want to do a project on gel permeation chromatography. how creative can i make with this topic? suggestions required. ....etc

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The slotted links AM and BH are attached to the front wheel axle, which turn on pivots A and B respectively. The rod CD is constrained to move in the direction of its length, by the sliding members at P and Q. These constraints are connected to the slotted page link AM and BH by a sliding and a turning pair at each end. The steering is affected by moving CD to the right or left of its nominal position.


The Davis steering is an exact steering gear mechanism.the slotted links AM and BH are attached to thefront wheel axle, which turns on piv ....etc

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