and Hydroxylpropyl methylcellulose (HPMC) was sprayed over sugar beads to form thin film consisting of molecularly dispersed drug and polymer. This amorphous formulation reported enhanced bioavailability than that of crystalline Itraconazole. Apart from spray layering‚ Itraconazole solid dispersions were also prepared using hot melt extrusion with varying polymers such as HPMC‚ Eudragit E100 and Eudragit E100 and Polyvinyl pyrrolidone(PVP) mixture. In vitro studies revealed a faster dissolution of
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Diapers have always been a part of daily use. Even in ancient times‚ of course they weren’t as modern as now days. Diapers have been gradually evolving over time. There is not a definite place were diapers were first used‚ because everywhere mothers covered their children with whatever they had in hand. Documents show that babies from ancient times might have worn milkweed leaf wraps‚ animal skins‚ and other natural resources as types of diapers. Native American mothers and Inca mothers in South
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December 2). What is Polymerization? Retrieved from http://www.wisegeek.com/what-is-polymerization.htm Education planet Knowledgerush. (2009). Alkyne. Retrieved from http://www.knowledgerush.com/kr/encyclopedia/Alkyne/ Manisha Ophardt‚ C. E. (2003). Polymers. In Virtual Chembook. Polymerization – Definition‚ (2010). Retrieved from http://www.wordiq.com/definition/Polymerization P.S Scope of Organic Chemistry. (2008). Retrieved from http://www.tutornext.com/scope-organic-chemistry/ 14431 StasoSphere
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A well-designed experiment will have only one critical variable that is changed over several trials A bacterium swimming away from a toxic chemical is an example of what aspect of living things? the capacity to respond to environment Evolution is a central‚ unifying theme in biology because the enormously diverse forms of life on Earth have all been shaped by it An atom with an unequal number of protons and electrons is called an ion. This produces a charged atom‚ or ion. An
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refer to these efforts as “recovery”. There are three main types of recovery‚ primary recovery (solution gas‚ gas cap and natural water drive) secondary recovery (gas injection and water flooding) and tertiary recovery (enhanced oil recovery EOR‚ polymer flooding and steam flooding). In this article‚ analysis on the “enhanced oil recovery” technology and trends will be emphasized upon. ENHANCED OIL RECOVERY Enhanced oil recovery becomes very vital when oil production has to be increased to obtain
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Abstract (1‚3)-β-D-Glucans are naturally occurring polysaccharide polymers found in the cell walls of various fungi and bacteria. They are structurally composed of D-glucose polymers consisting of linear (1‚3)-β-D-glucosidic linkages of varying length and also branched polymers with side chains attached as (1‚6)-β-D-linkages. These side chains can be (1‚3)-β or (1‚6)-β glucoside chains of varying length. β-Glucans belong to a class of drugs called biological response modifiers (BRMs) due to their
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Science High School Department De La Salle Supervised Sta. Filomena‚ Dipolog City 1 Introduction Plastic bottles‚ plastic spoons‚ plastic packaging‚ plastic bags… we use a lot of plastic. Plastics are made from polymers‚ which are super long chains of atoms. We love them because they’re cheap and super sturdy for how light they are. The problem is that they’re so sturdy that‚ after we throw them away‚ they can sit around in a landfill for a million years. Almost
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Synthesis Pregablin William Knowles- first non-enzymatic asymmetric catalysts Carbon nano-tubes Greenhouse gases (all) History of industrial synthesis of acetic acid‚ benzene‚ ethylbeneze‚ or any other commodity industrial chemical Nylon polymers Cellulosic ethanol Sonochemistry Biodiesel from fatty acids (FAME) and aglea Codexis- Sitaglipin synthesis Suzuki Reaction Wilkinson’s catalyst Ionic Liquids Subjects Wilkinson’s catalyst Use of asymmetric catalysts to produce chiral
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INTRODUCTION The purpose of this project paper is to highlight the chemistry and science of the very curious material: Kevlar®. Our aim is to create a very informative piece of writing that can be of reference to our project subject‚ when in need. Upon taking up this project we conducted some very superficial research initially. Our research led us to believe that Kevlar® is a rather well known material that has been used in bullet proof vests for the last couple of decades. In addition to
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the polyurethane is pre-loaded with rapamycin‚ and all struts are equally covered‚ the drug distribution pattern into the vessel tissue is even and uniform. ChronoFlexTM Polyurethane The biocompatibility of the polymer used for coating the carotid stent is crucial. The polymer must be non-inflammatory‚ capable of being stretched without flaking
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