History of Napkin Napkins have been in used from the times of ancient Roman Empire and prior to them‚ in ancient Greece. References to word napkin dates back to 1384 AD. Spartans from ancient Greece (around 4th century BC)are known to have used bread slices made from a lump of dough as napkins to wipe their hands and it is possible that they ate these bread napkins after use. The ancient Romans (first to 5th century AD) are known to have used cloth napkins (called Mappa) to protect from food spill
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The initial theory of continental drift was put forward by a German meteorologist Alfred Wegener in 1915. This theory did not seem credible until it was connected with the plate tectonic theory in the mid 1960’s. The Tectonic plate theory had an advantage over previous predictions as it could be supported by observed occurrences. One such thing that supports these two theories is that seen from space the continents look as if they might once have been joined together. This possible idea was then
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Viscose Rayon Viscose Rayon It is a regenerated cellulosic fibre and cellulose is the raw material for producing this man made fibre. The raw material is obtained from a special variety of wood called spruce. Manufacturing Process [pic] a. Purification of Cellulose: The manufacture of viscose rayon starts with the purification of cellulose. Spruce trees are cut into timber. Their barks are removed and cut into pieces. These pieces are treated with a
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Isolation and Purification of Lyngbya majuscula on Nutrient-enriched Agar Plates A Special Problem Isolation and Purification of Lyngbya majuscula on Nutrient-enriched Agar Plates ABSTRACT Lyngbya majuscula samples were obtained from the Phycology Laboratory stock culture of the UPV Institute of Aquaculture. Five (5) mm fragments of these were inoculated into agar plates that used 1% agar concentration enriched with varying concentrations (1.0%‚ 1.5%‚ and 2.0%) of Hughes‚ et
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Introduction Known as sanitary pads‚ sanitary towels or maxi pads‚ sanitary napkins form an important part of the gynecological hygiene of every woman. A sanitary napkin is a form of a porous item that has the capability of soaking the flow of blood. Hence‚ menstruating women wear them during their periods. Some women also prefer using them while recovering from vaginal surgeries‚ childbirth or abortion. Today‚ there are different varieties of disposable sanitary pads available in the market‚
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spelled without repeating a letter is uncopyrightable The Sanskrit word for "war" means "desire for more cows." There are two credit cards for every person in the United States. You’re born with 300 bones‚ but when you get to be an adult‚ you only have 206. Your heart beats over 100‚000 times a day. Women’s hearts beat faster than men’s. The average person has over 1‚460 dreams a year. The average person’s left hand does 56% of the typing.
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Volcanic and Seismic events are major pieces of evidence towards proving that plate tectonics theory is valid (40 marks) The theory of plate tectonics states that the Earth’s lithosphere (top layer of the Earth’s crust) is split up into rigid sections called plates that are moving relative to one another as they move on top of the underlying semi-molten mantle. These plates are either continental‚ The North American Plate‚ or oceanic‚ The Nazca Plate. Tectonic plates are powered by convection currents
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March‚ 2010 Title: Investigating the capacitance of a parallel-plate capacitor using a reed switch Objective: To investigate the factors which affect the capacitance of a parallel-plate capacitor using a reed switch. Apparatus: - reed switch - signal generator - capacitor plates of area about 0.24m X 0.24 m 1 pair - polythene spacers ( 10 X 10 X 1 mm ) - polythene sheet‚ same area as capacitor plate 1 mm thick - battery box with 4 cells
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Evaluate how Plate Tectonic Theory helps our Understanding of the Distribution of Seismic and Volcanic Events (40 marks) The Plate Tectonic Theory developed in the late 1960’s‚ when people noticed how continents either side of the Atlantic Ocean seemed to almost fit together. Francis Bacon‚ an English Philosopher was aware of this as early as 1620. Topographical and geological evidence built up and allowed Alfred Wegener to publish a theory in 1912‚ suggesting that the continents were once all joined
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about 30% of earth is still forested. The economic value of forests‚ supply many products like wood from trees as lumber‚ plywood and fuel wood or charcoal. Timber is used in furniture making‚ building houses‚ ships and railway sleepers. Pulp and paper are made from the cellulose of trees. Processed wood products include cellophane‚ plastics‚ synthetic fibers like rayon and nylon. Latex from trees such as the rubber tree goes to make tyres‚ tunes and a wide range of rubber goods. Other uses;
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