The applications for synthetic polymers fall into the main categories of thermoplastics‚ thermosets‚ elastomers and synthetic fibers. Epoxy falls in the thermoset category. It begins in a soft solid or viscous liquid in the prepolymer state. Once the two parts react during polymerization‚ the epoxy resin will become hard
Premium Epoxy Plastic Composite material
edu/research/vegroup/vp/papers/dickerson-mmvr14.pdf Francis‚ A. L.‚ Nusbaum‚ H. C.‚ & Fenn‚ K. (2007). Effects of Training on the Acoustic–Phonetic Representation of Synthetic Speech. Journal of Speech‚ Language‚ and Hearing Research‚ 50(6)‚ 1445-1465. Retrieved from http://web.ics.purdue.edu/~francisa/Articles/Francis-etal_JSLHR07.pdf Kang‚ M.‚ Kashiwagi‚ H.‚ Treviranus‚ J.‚ & Kaburagi‚ M. (2008). Synthetic speech in foreign language learning: an evaluation by learners. International Journal of Speech Technology‚ 11(2)‚ 97-106.
Premium Human voice Speech recognition Singing
It is incredible to look at all that is being threatened in Rachel Carson’s Silent Spring. To have synthetic pesticides like DDT enter the biosphere and disrupt the natural world in the manner she describes is bewildering. Despite being so effective the damage they caused was irreversible throughout ecosystems. It was so polarizing she effectively reinvented the environmental movement‚ and defined who was responsible (NYT nopage). Perhaps the largest contributor to the environmental problem is human
Premium Carbon dioxide Global warming Greenhouse gas
Chapter 3: Insurance‚ Collars‚ and Other Strategies FINA0301 Derivatives Faculty of Business and Economics University of Hong Kong Dr. Tao Lin Chapter Outline Options and basic insurance strategies Spreads and collars: bull and bear spreads; box spreads; ratio spreads; collars Speculating on volatility: straddles; butterfly spreads; asymmetric butterfly spreads 2 Long / Short Call / Put Options 3 Strategies: Based on Price Directions & Volatility Movements The simple call and
Premium Options Option Derivatives
Analgesics by TLC and Isolation of β-Carotene by Column Chromatography Introduction/Background: Flavonoids are an important group of additives that can be defined as pure substances either natural‚ extracted from raw materials or synthetic. Chromatography is the separation of two or more compounds or ions caused by their molecular interactions with two phases – one moving and one stationary (Weldegirma 2012). Three types of chromatography are used in organic chemistry: Thin Layer Chromatography
Free Chromatography Thin layer chromatography
Anselm’s most famous work was a book called the Proslogion in which he outlines his Ontological argument in the form of a prayer spoken directly to God. As a firm believer in God‚ Anselm wished to prove God’s existence and confirm his strong faith by using logic and reason. The Ontological argument is a priori and is based on deductive reasoning because it seeks to prove the existence of God from the understanding of the attributes of the God of classical theism. Chapter Two of the Proslogion introduces
Premium Ontology Existence Metaphysics
believe organic foods are better for you and the environment because they do not use chemicals. For instance‚ The USDA website states that organic foods are foods that are produced without using most conventional pesticides; fertilizers made with synthetic ingredients; bioengineering; sewage sludge; or ionizing radiation (USDA). The truth is organic foods claim to be chemical-free except the organic pesticides they are allowed to use are so dangerous they have been “grandfathered” with current regulations
Premium Organic food Organic farming Sustainable agriculture
Mrs. Mercer Hon. English 1 13 February 2012 Organic Farming “Pesticide residues have been ranked among the top three environmental cancer risks by the American government” (Cleeton). This startling statistic fuels some of the arguments between organic farming and conventional farming. Although organic products cost more‚ they have many benefits to humans and rural societies. Organic farming is better than conventional farming because of the benefits to the natural environment‚ the methods
Premium Organic farming Agriculture Sustainable agriculture
artificial organ replacement; the latter of the two types consists of either synthetic or natural materials. However‚ because xenotransplantation poses many health risks‚ artificial organs provide a more sensible‚ disease-free approach to organ replacement. Thus‚ efforts of scientists and engineers should be directed toward furthering the development of artificial and bioartificial organs and materials. Artificial organs are synthetic devices that replace injured or weakened body parts and functions. Similarly
Premium Organ transplant Liver Artificial organ
fibres Natural fibres are either animal or plant-based. Silk‚ wool and hair are all animal fibres Plant fibres include cotton and linen. Synthetic fibres and regenerated fibres are manufactured. Regenerated fibres are made from natural materials‚ such as cellulose from wood‚ that are chemically processed. Viscose and rayon are regenerated fibres. Synthetic fibres are all man-made from organic polymers Modern fibers: microfibers and smart fibres Turning fibres into yearn: carding Turning fibres
Premium Weaving Knitting Wool