(non-DIS placement) Microencapsulation Techniques and Applications Student Name: Photchara Chawasap‚ B118708 Date: 26/9/2013 Word Count: 8321 SUMMARY Microencapsulation is a technique in which active ingredients solid or liquid are coated within a second material for the purpose of protecting the active ingredient from the surrounding environment. The coated core material is called a ‘microcapsule’. The active ingredient is the core material and the surrounding material
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1 This essay will examine the role of attachment in childhood and it’s subsequent formation of relationships. Most babies of mammals exhibit the same patterns as human infants; they seek proximity to the mother and react with anxeity on seperation from her‚ which is the essense pf attachment behaviour. John bowlby believed that attachment was an innate pattern and it helped infants to survive. Bowlby had observed how baby monkeys reacted with distress on sepearation from their mother for
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Background Research Gelatine is a clear‚ colorless‚ brittle (when dry)‚ flavourless solid substance‚ derived from the collagen inside the skin and bones of animals. Substances containing gelatine or functioning in a similar way are called gelatinous. gelatine is an irreversibly hydrolysed form of collagen. It is found in some gummy candies as well as other products such as marshmallows‚ gelatine dessert‚ and some low-fat yogurt. Household gelatine comes in the form of sheets‚ granules‚ or powder
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Stanitski & Jurs‚ 2009). Freezing point is the fixed temperature at which a pure liquid converted into crystalline solid. Melting point is the fixed temperature at which a crystalline solid converted to a liquid (Ebbing & Gammon‚ 2010). The melting point of a solid and the freezing point of its liquid is the same. It is the temperature at which the rate of freezing of its liquid is the same as the rate of melting of a solid under a given applied pressure (Whitten‚ Davis & Peck‚ 2009). A change of state
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are: solid‚ liquid and gas. In addition‚ all matter is made up of particles: atoms‚ molecules and ions. Solids In the solid state state‚ the particles are packed closely together in a regular manner. The focus of attraction between these particles are very strong and as a result solids are usually very hard and very difficult to compress. Futhermore‚ the solids cannot move out of position‚ causing solids to have a fixed volume and a definite shape. In addition‚ the particles in a solid have a
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force keeps the particles together. The strength of this force of attraction varies from one kind of matter to another. States of Matter 1. THE SOLID STATE- all solids have a definite shape‚ distinct boundaries and fixed volumes‚ that is‚ have negligible compressibility. Solids have a tendency to maintain their shape when subjected to outside force. Solids may break under force but it is difficult to change their shape‚ so
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tool used to measure the volume of a liquid 3. Pipets- Pipets are small tubes that suck up and contain liquids C. Technique 1. The water displacement technique is used to measure the volume of a solid object using a graduated cylinder and water. This works by filling up a graduated cylinder about halfway with water and then measuring the volume by looking at the lowest
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Physical Properties The purpose of this lab was to see how certain substances; Naphthalene‚ Toulene‚ and and 2 unknowns (one liquid‚ one solid) react with 3 different solvents. To identify the two unknowns‚ testing needs to be done to find the density of both the liquid and the solid‚ determine the melting point of the solid‚ and the boiling point of the liquid. The Physical Properties of Pure Substances Table can then be used to compare the observed results with the accurate properties from
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Density of Unknown Liquid Trial 1 Trial 2 Trial 3 Mass of Empty 10 mL graduated cylinder (grams‚ g) [1] Volume of liquid (milliliters‚ mL) [2] Mass of graduated cylinder and liquid (grams‚ g) [3] Part II: Density of Irregular-Shaped Solid Mass of solid (grams‚ g) [4] Volume of water (milliliters‚ mL) [5] Volume of water and solid (milliliters‚ mL) [6] Part III: Density of Regular-Shaped Solid Mass of solid (grams‚ g) [7]
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three states of matter are known as solid‚ liquid and gas. Gases‚ liquids‚ and especially solids surround us and give form to out world. These three states of matter have different characteristics that can and cannot be easily defined. Solids : The state of matter that is mostly known and seen would be a solid. A solid has a shape‚ mass‚ and volume that can be identified. The way that you can identify the volume of a regular solid is by multiplying length x width x
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