2. Qualitative ORGANIC functional group tests in various homologous series | TEST FOR | TEST METHOD | OBSERVATIONS | TEST CHEMISTRY and comments | ALKENE or alkyne i.e. any non-aromatic unsaturated hydrocarbon with a double or triple carbon-carbon bond. | Bubble gas through‚ or add liquid to‚ a solution of bromine in hexane or water. | The orange/brown bromine rapidly decolourises‚ as a saturated colourless organic bromo-compound is formed. | R2C=CR2 + Br2 ==> BrR2C-CR2BrRCCR + 2Br2 ==> Br2RC-CRBr2R
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had stress-concentrating corners. Also‚ materials such as vanadium steel‚ which was chosen for its good mechanical properties corroded rapidly in the body and caused adverse effects on the healing processes 1930s: Stainless steels and cobalt chromium alloys were introduced and great success was achieved in fracture fixation‚ and soon joint replacement surgeries were performed Biomaterials‚ Joyce Y Wong and Joseph D Bronzino (Eds)‚ CRC Press‚ Boca Raton‚ FL‚ 2007 4 History of biomaterials
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with 24-karat gold” as an artificial root to “fit exactly the circular incision made for it in the jaw-bone of the patient”. In the 1930’s‚ two brothers‚ Dr. Alvin and Dr. Moses Strock‚ experimented with orthopedic screw fixtures made of Vitallium (chromium-cobalt alloy). They carefully observed how physicians successfully placed implants in the hip bone‚ so they implanted them in both humans and dogs to restore
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insulin through the skin of the patient. Fast acting insulin is shot continuously via a needle into the abdominal fat to keep blood glucose levels steady. Alternative treatments include taking supplements and herbs. Supplements include magnesium‚ chromium‚ vanadium. Herbs include ginseng‚ hawthorn‚ garlic‚ etc. Although‚ these alternative methods have few clinical research and evidence to prove their
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Laboratory Testing Routine laboratory screening for suspected prosthetic joint infection in the setting of a painful THA includes a complete blood count with differential‚ C-reactive protein level (normal‚ 4200 cells/µL and neutrophil differential of >80% is highly suggestive for chronic infection about a THA [16]. Additionally‚ the onset of symptoms in relation to the primary operation can help identify the causative organism. Early (12 months) infections are commonly due to staphylococcus aureus
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sweeping the dirt under the rug to the extreme. The dramatization primary focus surrounds the deception PG&E has cast over the inhabits of Hinkley‚ California. For years‚ the company had been polluting the environment with a known deadly toxin‚ Chromium six. The toxin eventually seeps into natural underground water reservoirs then onto the unsuspecting town folk. The effects on the human body were devastating. In which the worst being various types of cancer to an untimely death for many of the
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Nathan Jingst Mrs. Miller Spanish II 31 October 2014 Geography of Cuba Cuba is located in the Caribbean‚ and is the largest island there. Technically‚ the country does not border any other countries. The United States leases Guantanamo Bay‚ a military prison‚ in an eastern section of the country (Geography). Other than this‚ Cuba is completely surrounded by water. Cuba has an area of 42‚803 sq. miles. It is about 760 miles long‚ and about 55 miles wide. Its closest neighbor is Haiti‚ about 50 miles
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We all know that energy on earth is running out‚ but what if we could use stars? Stars contain so much energy‚ if we could harvest it‚ we would never run out of energy. Energy from stars could be the energy source we are looking for. Energy is something we probably take for granted‚ we use so much of it everyday‚ and our current energy source‚ fossil fuels‚ releases gases into the environment‚ but with energy from stars‚ it could be a fresh start for our energy sources and our environment. Stars
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Resources‚ Conservation and Recycling 21 (1997) 145–173 Metals recycling: economic and environmental implications Robert U. Ayres * INSEAD‚ Boule6ard de Constance‚ F-77305‚ Fontainebleau‚ France Received 17 July 1997; accepted 27 July 1997 Abstract We are in a period of economic transition. The ‘cowboy economy’ of the past is obsolescent‚ if not obsolete. Environmental services are no longer free goods‚ and this fact is driving major changes. Recycling is the wave of the (immediate) future
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almost the same amount of chemicals as a smoker. Tobacco smoke contains more than 4‚000 chemical compounds‚ more than 50 of which are known to cause cancer.6 Chemicals that cause cancer include: Arsenic‚ Benzene‚ Beryllium‚ Butadiene‚ Cadmium‚ Chromium‚ Ethylene Oxide‚ Nickel‚ Polohium-210‚ and Vinyl Chloride.1 Other toxic chemicals in secondhand smoke is Hydrogen Cyanide‚ Carbon Monoxide‚ Formaldehyde‚ and Ammonia. No one would want to consume any one of these chemicals separately‚ but billions
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