plentiful food. New World innovation came not from creating machines‚ but from building on and expanding on the environment around them. For example‚ the dyes produced by the native people were revolutionary. Red dyes in Europe were mottled and orange‚ and the only true red colors were expensive. The Native people‚ however‚ were able to make these dyes out of bugs found on prickly pear cactus. Another huge contribution that the Natives made to the Europeans was their advancements in food. Scholars are
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individuals were allowed to own and wear‚ an easy and immediate way to identify rank and privilege. The materials and even the colors of Elizabethan clothing were therefore very important and sections have been dedicated to these subjects in relation to dyes‚ fabrics and the type of clothes that men were allowed to wear and
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Secondary storage (optical) Table of contents Why was secondary storage needed? 1 Different types of optical discs: 1 1‚ CD (compact disc): 1 2‚ DVD (digital versatile storage) 2 3‚ Blu-Ray Disc (BD): 3 Which type of recordable disc should I choose: 3 Understanding the difference between the Live File System and Mastered disc formats: 3 Discs formatted with the Live File System option: 3 Discs formatted with the Mastered option: 4 Questions from students: 4 References: 5
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|Observations of the Reaction| A.|NaHCO3 + HCl| H12|White and bubbled slightly and settled down to smaller smaller bubbles| B.|HCl + BTB| H11|Golden yellow; looked darker under the black paper| C.|NH3 + BTB|H10 |Dark blue| D.|HCl + blue dye| H9|Greenish color| E.|Blue dye + NaOCl| H8|Blue and lighter than NH3+BTB solution color| | with the 1 drop of HCl| H8|Turned blue green in color| F.|NaOCl + KI| |See back page| | with 1 drop of starch| || G.|KI + Pb(NO3)2| H6|Bright yellow | H.|NaOH + phenolphthalein|
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. Safety aspect of glow sticks Glow sticks are a form of lighting typically used in events and parties. The chemicals responsible for luminescence are contained within a plastic case. The chemicals are separated by a glass vial‚ such that when the stick is bent‚ the vial breaks and allows the reaction to occur. In general‚ glow sticks are considered safe to use. None of the chemicals used are classified as radiation‚ flammable or explosive hazards. Some of the chemicals however‚ are classified
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TITLE OF PRJECT WORK STUDIES ON THE PRODUCTION OF QUALITY GARMENTS LEATHER FROM CALF SKIN Project Supervisor Prof.Dipl.-Ing. Mathias Paas Faculty of Textile and Clothing Technology Hochschule Niederrhein Mönchengladbach‚ Germany. Participant Md.Saiful Islam Matriculation No-871349 Master Management of Textile Trade and Technology ACKNOWLEDGEMENT The preparation of the garments leather is very interesting and sensitive issue. I tried my best to provide valuable information to
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Food additives are in most of the things we eat. Most People consume food additives every day in all the foods they eat. There are many additives used that people know about and many that the average person has no knowledge about. This paper will give you a greater understanding which food additives are common and what effect it has on your health. According to the U.S. Food and Drug Administration (FDA)‚ a food additive is any substance added to food. Legally the term means‚ "any substance the
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In the 1930’s‚ Richard Dogmagk experimented with a red dye called prontosil and found that it had strange healing effects‚ when he injected the dye into mice with severe streptococcus infections‚ they all survived. Dogmagk had discovered the one of the fist antibiotics‚ specifically the first Sulfa drug. When scientists isolated the active part of the prontosil molecule they discovered how it and all sulfa drugs work. Sulfa drugs contain a sulfur atom that has six total bonds (shared electrons)
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Introduction: Experiments 1 and 2 main aims are as follows: • To able to use the Beer-Lambert law to explain the relationship linking concentration and absorbance of the coloured solutions methyl orange and bromophenol blue. • To be able to rightly operate a spectrophotometer to assess the absorbance at various wavelengths • To be able to identify the main component parts of a spectrophotometer • To be able to draw a ‘Standard Curve’ from the data collected
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carotene‚ which gives butter its yellow colour)‚ sterols and waxes. Fats supply the body with a concentrated OBJECTIVES: To investigate on the composition of two different types of unknown milk‚ K1 and K2. To investigate a small volume of dye‚ K3 this stains fats red. To investigate the reducing sugar and protein concentrations in both sample of milk‚ K1 and K2. To compare the composition of two different
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