Objective: The Levodopa effervescent floating tablets were prepared using different low density polymers (POLYOX different grades) in various drug polymer ratios for prolongation of gastric residence time and to improve the patience compliance. Methods: The Levodopa effervescent floating tablets were prepared by direct compression method. The floating tablets were evaluated for friability‚ thickness‚ hardness‚ weight variation test‚ drug content‚in vitro release and floating properties. The drug
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that it was because the hydrocarbons have been inhibiting the cooper pairs. However‚ he deduced that if there was a drastic temperature change in a short period of time‚ the polymer will become conductive and that completes the metastable sphere. He sets to work; by adding an organic catalyst and some electricity to the polymer‚ he successfully created flubber in the pressure reactor. Unfortunately‚ his brilliant insights and experimentation caused him to miss his wedding again. Erroneous science
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advanced resist systems. Diffusion of photoacid is believed to be a dominant cause of LER for CAR platforms.However‚ a number of other factors are believed to contribute to LER and the major contributors include mask roughness‚ aerial image contrast‚ polymer-developer interactions and energy blur such as diffusion of secondary electrons in the case of EUV lithography. Despite the large amount of work investigating issues that effect LER a global understanding of all the different components is yet
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Chapter 1: Biology- The study of life A Hierarchy of Organization 1. Molecules 2. Organelle 3. Cell 4. Tissue 5. Organ 6. Organism Emergent Properties- Novel properties that emerge as each step up the hierarchy of biological order is taken. Reductionism- Reducing complex systems to simpler components that are more manageable to study. Cells- The lowest level of structure capable of performing all the activities of life‚ all organisms are composed of cells which are the basic units of structure
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biologically active and the other is not 2. Pharmaceuticals- important because often one of the isomer is not as effective or could produce harmful effects (thalidomide) III. Polymers – Macromolecule of many identical or similar subunits (monomers) a. Condensation synthesis- process by which links monomers into polymers 1. 1 water molecule is removed for each monomer added (one monomer loses a hydroxyl group and the other loses a hydrogen so that they are then able to bond covalently to each
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bus 9.2 – Production of Materials: Δ. Construct word and balanced formulae equations of all chemical reactions as they are encountered in this module: • Basic reactions to remember: – Acid reactions: ▪ acid + base [pic] salt + water HCl(aq) + NaOH(aq) [pic]NaCl(s) + H2O(l) ▪ acid + metal [pic] salt + hydrogen gas HCl(aq) + Mg(s)[pic]MgCl2(s) + H2 (g) ▪ acid + carbonate [pic] salt + carbon dioxide gas + water HCl(aq) + CaCO3(s)[pic] CaCl(s) + CO2(g) + H2O
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Try Synthetic Ivory In a time of limited resources‚ and with the population of the human race increasing at an alarming rate‚ demand for products will be at an all time high. This is why synthetic resources will become of great importance in the near future. For instance‚ ivory is high in price and involves the hunting of an endangered species‚ the elephant‚ this is why creating a synthetic form of this material would not only make it more affordable‚ it would also help preserve wildlife. A synthetic
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Week 2 Quiz Which of these is NOT one of the four general categories of cells that make up the human body? collagen cells muscle cell neuron connective tissue cell epithelial cells What is the term for the developmental process that leads to specialized cell types? homeostasis differentiation positive feedback genomics acclimatization If a person begins to sweat upon entering a hot room but continued sweating is able to keep the body temperature constant‚ which of these best
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What are monomers? molecules that can bond to form polymers. building blocks. What are polymers? Chain of monomers. What is the process of polymerization? Taking monomers and making polymers. What are the four molecule characteristics of living things? Proteins(made from amino acids)‚ Carbohydrates(made from monosaccharides)‚ Nucleic acid( made from nucleotides)‚ lipids What is a macromolecule? give examples Polymers with molecular weight exceeding 1000 g/mol. examples:
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Rapid prototyping 3D printers 3D printing is a form of additive manufacturing technology where a three dimensional object is created by laying down successive layers of material. 3D printers are generally faster‚ more affordable and easier to use than other additive manufacturing technologies. 3D printers offer product developers the ability to print parts and assemblies made of several materials with different mechanical and physical properties in a single build process. Advanced 3D printing
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