perforated tube the back Pressure. Will remain constant and the sound level is reduced. Using the perforated tube the fuel consumption remains same as conventional system. By using water as a medium the sound can be lowered and also by using activated charcoal in water. We can control the exhaust emission to a grater level. The water contamination is found to be negligible in aqua silencer‚ because the amount of acidity level in aqua silencer is expected to be below the dangerous acidity. It is smokeless
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the substances in order to transform them. The alchemist Wei Boyang wrote the Book of the Kinship of the Three detailing the experiments made by the alchemists. During the 8th century Tang dynasty‚ sulphur and saltpeter were first combined with charcoal to create an explosive called huoyao or gunpowder. A substance that did not encourage eternal life‚ however‚ gunpowder was used to treat skin diseases and as a fumigant to kill insects before its advantage as a weapon was made clear. The Chinese
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ABSTRACT Polluted air causes physical ill effect decides undesirable aesthetic and physiological effects. The main pollutants contributed by automobiles‚ electric power generating stations‚ industrial and domestic fuel consumption‚ refuse burning‚ industrial processing etc. are carbon monoxide (CO)‚ unburned hydrocarbon (UBHC)‚ oxides of nitrogen (NOx) and Lead. An aqua silencer is an attempt mainly dealing with control of emission and noise. The noise and smoke level is considerably less than the
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Regena Ramprasad Commentary on Adichie Chimamanda Ngozi Adichie is a Nigerian writer who typically compares America to her home land‚ Nigeria. In the three short stories we are focused on; “My Mother‚ the Crazy African”‚ “Ghost”‚ and “Cell One” Adichie’s unique culture was brought out in her writing. The author’s intentions including Igbo in her stories‚ her native language had an effect on the readers
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Experiment 1: Purification of Benzoic Acid by Recrystallization III. Introduction Purification - physical separation of impurities and by-products from an impure sample pure substance. *Distillation- for liquid compounds‚ *Recrystallization- solid compounds Recrystallization - precipitation of a solid cpd. from a saturated solution in the form of crystals through cooling or evaporation -7 steps: 1) selecting the appropriate solvent 2) dissolving the solute 3) decolorizing the
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the surface energy is decrease. The solid on which adsoprtion occurs is called adsorbent and the substance that is adorbed is called as adorbate. The total phenomenon is called as the freundlich adsorption isotherm. In the illustration cited above‚ charcoal is adsorbent and the particles or molecules of the dye are adsorbate and the total phenomenon is adsorption. Explanation of Freundlich Adsorption Isotherm The following is the relation between the adsorption or gaseous adsorbent at definite
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How about a little bit more on the brief history about Toothpaste: • 1st known tooth powder was used in Egypt around 5000BC and included egg-shells and ox hooves • Early toothpastes had ingredients such as dried animal parts‚ honey and powedered charcoal • Europeans didn’t use toothpaste until 1800s and it contained chalk and pulverised brick • Dr. Washington Sheffield invented the Toothpaste Tube in 1892 • Striped tootpaste was invented in England nearly 50 years
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chemicals. So‚ quickly‚ both sides developed gas masks. At first‚ soldiers held chemically treated cotton pads over their noses and mouths. Later they wore fabric face masks soaked in chemicals‚ and finally soldiers on both sides wore respirators with charcoal filters.("Technology.") These gas masks were the new protection which the soldiers used to protect themselves from poison. World War I turned into a fight to see who was more protected‚ it changed from the constant battering of the opposing team
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professional‚ according to the brand perception statistics of Professional-Tradesmen segment buyers(Figure C). The other possible reason is that Black & Decker has black/charcoal grey for all their products‚ compared to Makita that differentiates their professional product line with teal color versus consumer’s black/charcoal grey (Figure D). Thus‚ when tradesmen look at the Black & Decker’s Professional-Industrial product line they assume that those are Comsumer segment tools and don’t even consider
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primarily those that employ pyrolysis and gasification to process municipal solid waste (MSW). The gasification and pyrolysis of solid materials is not a recent concept. It has been used extensively to produce fuels such as charcoal‚ coke. Pyrolysis of coal and wood gives coke and charcoal respectively and in addition a combustible gas in produced by gasification of coke in the presence of controlled quantity of oxygen. Post 2006 pyrolysis and gasification have been commercially used in treatment of Municipal
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