that the cold cast films are generally mechanically weak‚ susceptible to crack formation and soluble in many polar solvents‚ especially in water at room temperature. Generally‚ the annealed films undergo morphological changes when heated above the glass transition temperature (Tg=109oC for protonated Nafion) leading to improvement of mechanical stability of the membrane. This phenomenon was clearly explained by Zook et al. [2] by observing that cold cast Nafion films have a micellar configuration
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striking examples of symmetry…are crystals. Herman Weyl Study Period Focus Image Question Your Observations Week 5 Image 5 What observations can you make about these octahedra of cubic cristobalite‚ another polymorph of quartz‚ ‘frozen’ in volcanic glass? (no more than 50 words) (2 marks) What is your personal favourite gemstone and what is its space group. (around 10 words) (2 marks) Week 6 Image 6 Cavansite and vandinite are both oxide minerals‚ and as their names suggest‚ contain the
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Product: Paper Vending Machine Height: 5ft Width: 3ft Thickness: 3ft Description: powered by electricity‚ looking glass window as the front past of the machine that will show the merchandise that student can buy. The window can be opened sideways for the merchandise to be refilled. (please see picture below) PVM is a new and strategic and innovative way to sell paper. We will be selling papers from intermediate papers‚ bond papers up to school booklets. Eventually‚ we will also be selling basic school
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rug. And how I loved to sit in the middle of the room and trace the carpet’s intricate motifs. But by far the most important to me was the commanding wardrobe. The heavy center door was not flat but bulged outward. The center of that door had a glass window that was also curved and followed the contour of the bulging door. And behind that window on a shelf stood twenty volumes of the most complete encyclopedia of its time in Germany‚ my Gates to the Universe and its wonders and marvels. In
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toughened base which supports the bottle and the theme suits the specification also the lid is plastic. | The writing on the perfume bottle is not attractive which is against the specification. Also the sustainability of the bottle as it is made from glass and therefore it is also non-recyclable | The area of development for this particular bottle is to make sure that have been spotted to improve at meet the specification general need e.g. recycablity and sustainability | 4 | The strengths of this
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Cryonics (often mistakenly called "cryogenics") is the practice of cryopreserving humans or animals that can no longer be sustained by contemporary medicine until resuscitation may be possible in the future. The process is not currently reversible. Cryonics can only be performed on humans after clinical death‚ and a legal determination that further medical care is not appropriate (legal death). The rationale for cryonics is that the process may be reversible in the future if performed soon enough
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When the carriage stopped in front of the townhouse‚ Boudreaux bid us a good night‚ and informed us‚ I felt more for me‚ than Louis‚ that he was leaving first thing next morning and traveling to his plantation to oversee the planting. We wished him well and parted ways. I felt Boudreaux’s eyes on me as we walked inside. After we went inside‚ Louis said that he wished he had told Ransom that he was leaving within the week and going back to Barbados; the unrest there was threatening the cane crop.
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exercise‚ it was required to observe carefully what happened when certain substances were heated in a burner‚ and to note the appearance of the residue after heating. AIM: To observe the effects of heating different substances. MATERIALS: Hard glass test tubes Powered samples of Lead (II) nitrate Copper (II) sulphate Ammonium chloride Zinc sulphate Basic copper (II) carbonate‚ CuCO3. Cu(OH)2 Blue and red litmus and a splint METHOD: 1. About
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justified to believe in bottled water as the best and only safe water to drink and that they cannot drink any other water apart from bottled water. Bottled water demanded and highly consumed by many people around the world. Turning on the tap‚ put a glass underneath‚ and drink is not simple for some people. The use of bottled water has been regarded by many as a describing factor of one’s status in the society and believes that consumption of water from the taps would be putting them very low. The choice
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Miracle Polish is a story about a man who buys a bottle of “Miracle Polish” from a salesman who goes from house to house. From the moment the narrator begins using the Miracle Polish to clean one of the few mirrors in his house‚ his obsession for his own reflection – and his girlfriend Monica’s – led him to buying more mirrors. This goes on up to the point when Monica gets fed up with the narrator‚ for he is more appealed to the Monica in the mirror rather than the real Monica. The narrator then
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