old and new varieties) will be the independent variables in the experiment as the vitamin C content is unknown. The dependent variable is the measureable amount of each of these drinks solutions that is required to decolourise a known amount of blue dye. As there are pairs of fruit juice solutions being measured it is possible to compare one against the other. It is also necessary to repeat each cycle of the experiment to minimise any variances in the solutions being tested. It is also possible
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The accuracy of the ‘Modified Evans Blue Dye Test’‚ for detecting aspiration pneumonia: A literature review.Objective: The ‘Modified Evans Blue Dye Test’ is a common procedure‚ used to detect aspiration pneumonia. The purpose of this study was to determine the accuracy of ‘Modified Evans Blue Dye Test’‚ across published clinical studies. Method: The speech pathologist conducted a literature review. Articles were collected from a variety of resources and analysed - using Dollaghan’s (2005) meta-analysis
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Chapter I. THE PROBLEM AND ITS BACKGROUND Introduction Banana is a tropical plant classified as annual and it produces very abundantly. It is cultivated throughout the country especially in the provinces. “The king of the fruits”‚ mango fruit is one of the most popular‚ nutritionally rich fruit with unique flavor‚ fragrance‚ taste‚ and health promoting qualities making it a common ingredient in new functional foods often called “super fruits”. Banana is one of the delicious tropical seasonal fruit
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antibody. (Labelling phase) Bio-Rad Protein Assay The Bio-Rad Protein Assay‚ based on the method of Bradford‚ is a simple and accurate procedure for determining concentration of solubilised protein. It involves the addition of an acidic dye to protein solution‚ and subsequent measurement at 595 nm with a spectrophotometer or micro plate reader. Comparison to a standard curve provides a relative
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ALCIAN BLUE RATIONALE FOR USE Alcian blue is a water soluble‚ amphoteric copper phthalocyanine‚ which is most often used as a basic dye. In general‚ alcian blue has an affinity for sulfated and carboxylated groups of acid mucopolysaccharides‚ but the specific group demonstrated is dependent on the dye solution pH. RECOMMENDED FIXATIVES 10% neutral buffered formalin and Bouin’s fixative. AVOID Chromate Fixatives MODE OF ACTION (1‚ 2‚ 3) Alcian blue binds electrostatically with
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dyeing of hair is an ancient art. In ancient times‚ the dyes were obtained from plants.[ Some of the most well known are henna (Lawsonia inermis)‚ indigo‚ Cassia obovata‚ senna‚ turmeric and amla. Others include katam‚ black walnut hulls‚ red ochre and leeks.[16] In the 1661 book Eighteen Books of the Secrets of Art & Nature‚ various methods of coloring hair black‚ gold‚ green‚ red‚ yellow‚ and white are explained. The development of synthetic dyes for hair is traced to the 1860s discovery of the reactivity
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Abstract The Bradford method used to determine the protein content of a certain solution (Menguito‚ 2010) and involves the acidic Coomassie Brilliant Blue G-250 as a coloring reagent. [1] The dye is originally pinkish-brown in color when it is in its acidic state. When protein is bound to the dye the color turns blue. In this experiment a standard was used to start the experiment‚ specifically the BSA stock solution. This standard served as the “control” group of the experiment. Due to the
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Methods and Materials In this experiment‚ three dye molecules were used to calculate the solubility of the chemical structures in the relation to Rf . The Carmine dye was used because it contain six –OH bonds. Since‚ six –OH bonds were identified in this molecule the Rf results obtained‚ should differ greatly from the results taken from the other molecules. Alizarin (red) dye was chosen because it has one -OH bond. The third molecule Azure chosen because it does
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2: SYNTHESIS OF ORANGE II (2-NAFTHOL ORANGE OBJECTIVE 1. To produce dye based to the coupling of diazonium. 2. To understand the characteristic of dye orange II. INTRODUCTION The first dye was introduced by William Henry Perkin on 1856. It can be produced by the coupling of diazonium sulfanilic acid with nafthol in alkaline solution.. This was the common method used to produce dye nowadays. In this experiment‚ dye produced was the orange II. Azo compound is compound that contain azo group
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exciting solutions happening throughout the life cycle of this pioneering industry. Impacts and Concerns The environmental footprint of creating apparel varies based on the methods used to produce and extract the resources; the process to create‚ dye and finish the materials; the steps to cut‚ sew and assemble the products‚ and the packaging and distribution systems to move and deliver the product. Examples of the environmental impacts of these steps are discussed below: Conventional Cotton Farming
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