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    have the same working principle and use the same technology. There are ways to reach the desired shape. To do so, one can create the desired object by melting or softening the material to produce layers. Selective Laser Sintering (SLS) and Fused Deposition Modeling (FDM) are considered as examples of melting or softening the material to produce layers. On the other hand, layers can be obtained using liquid materials that are solidified. Stereolithography (SLA) is considered as an example of using

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    reduction of graphene oxide via HI and Woolins reagent. The most effective method for producing graphene of high structural integrity is chemical vapour deposition (CVD) using transition metal surfaces. Common transition metals include Cu , Ni and Ru . The conditions of growth, and solubility of carbon in the metal determine how the deposition occurs, resulting in varied morphology and thinness of the produced graphene . The most promising metals for the growth of graphene have occurred using Ni11

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    Carbon nanotubes (CNTs) are widely synthesized at high temperatures using floating catalyst chemical vapor deposition (FC-CVD) method. It is important to reduce the synthesis temperature of CNTs to prevent the self-pyrolysis of hydrocarbon to enhance the growth of CNTs. This work was addressed to synthesize CNTs at low temperature using some improvements on the technique used. In-situ monitoring device was used to monitor the temperature profile in the reactor and thus, to initiate the reaction.

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    Acid Deposition

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    Acid Deposition Acid deposition is a huge problem in our world today. It contaminates our waters causing the deaths of plants, trees, and fish as well as other animals. This is not a problem that only affects wildlife, as humans, we depend on this wildlife for our own sources of food and shelter. It is a problem we must face together in order to solve it. However, acid rain by itself is not the biggest problem. It causes many other deadly problems such as aluminum poisoning. What is acid

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    seen in Rogier Van Der Weyden’s Deposition (1435, see figure 1). The artists of Flanders had no interest in the study of the nude; therefore the figures in Deposition have oblong proportions and unnatural balance. However, the Flanders artisans had developed certain techniques, which made their works advanced in certain aspects. For centuries, monks in the area had been illuminating their manuscripts with extreme precision. This focus on detail is seen in Deposition. Every last hair is individualized

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    the ice margin and or other glacial lakes. Much of the sediment that was deposited in Glacial Lake Peterborough came from either from the stagnant ice blocks located on the Oak Ridges moraine or from the Lake Algonquin drainage system. Much of the deposition in this lake was dominated by sediment stratification, which may have been largely influenced by thermal stratification. As a result of thermal stratification occurring in this glacial lake sediment inputs were greatly influenced depending on the

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    Acid Rain

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    paints, including statues and sculptures that cannot be rebuilt. SO2 and NOx gases and their products can also damage visibility and harm peoples health. Solutions to the Problem ======================== Figure 1: Modelled total sulphur deposition in England and Wales, 1970, 1994 and 2010 The best way to combat acid rain is to reduce the amount of NOx and SO2 being released into the atmosphere. Catalytic converters in cars can reduce the emissions of NOx by up to 90 percent, but although

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    Acid Rain in Europe

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    oxide SO2 and water H2O When these mix together they form acids such as sulphurous acid (H2SO3). Acid rain can be deposited in three ways: * Wet deposition - The deposition of pollutants in rain and snow mainly affects upland areas. * Dry deposition - The deposition of gases and particles directly onto terrestrial surfaces. * Cloud deposition - The capture of cloud droplets that contain concentrated pollutants. We can measure how acidic the rain actually is by the pH scale, 7 is neutral

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    money tourists spend while visiting the beach. Beaches are naturally very dynamic places, but people try to control them and build permanent structures, such as houses, restaurants, shops and hotels, on or near the shore. The natural erosion and deposition of beaches becomes a problem. Beaches con disappear over time, or even over night during severe storms. Beaches are areas of loose sediment (sand, gravel, cobbles) controlled by ocean processes. Most beaches have several characteristic features

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    Greek Cypriot Leaders

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    the terrible enemy of Hellenism is expelled, the duty of the heroes of EOKA can never be considered as terminated" (Makarios declared on 4 September 1963) - The present Greek Cypriot leader, Glafkos Clerides in his memoirs entitled "Cyprus: My Deposition" described the Cyprus question as a conflict between "the Greek Cypriot preoccupation... that Cyprus should be a Greek Cypriot stale with protected Turkish Cypriot minority" and "the Turkish preoccupation ... to defeat any such effort and maintain

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