Wednesday, February 26, 2020

Geopolitical factors and the possible involvement of the U.S. in the Assignment

Geopolitical factors and the possible involvement of the U.S. in the BSEC region - Assignment Example It would be noted that geopolitical factors commonly entails political issues that arise as a result of geographical factors1. In this sense, the issue of geographic proximity from the existing BSEC member states and for that the Black Sea from the U.S ought to be considered. It will be noted that the existing members include Albania, Armenia, Azerbaijan, Serbia, Bulgaria, Greece, Moldova, Georgia, Russia, Turkey, and Ukraine, most of who are also members of the European Union2. What this implies is that there are different geographic concerns and needs that these nations have from the United States. As a result, one would wonder if the issue with Romania joining the E.U where there was an increase in disparity will not arise again. As noted by Grama, because of the perceived geographic disadvantage that Romania suffered, most of the interests that could be protected for the country were shifted to the other 4 major CBC programs that Romania was involved in.3 It is therefore importan t for the U.S to consider the issue of how effective it can be with the level of distance that exists between itself and the other member states, and the fact that the other members belong to a different economic block must be considered. There is also the factor of geopolitical factor of equitable distribution of resources within the geographic free zone of the Black Sea and how this will affect the U.S in terms of the size of the country. This is because in comparison to the other countries, the size of U.S. may be far larger than all the other countries; even when they are put together4. This means that there could be a possible problem with equity; from whichever size it is viewed. That is, when resources are shared in the same quantity among member states, the U.S is going to have a proportionally smaller quantum than it requires. On the other hand, when the sharing is done in relation to the sizes of the nations, the others are going to

Monday, February 10, 2020

History and uses of carbonnanotubes Essay Example | Topics and Well Written Essays - 750 words

History and uses of carbonnanotubes - Essay Example The molecule has been known for the past fifteen years. The molecules were observed by employing high resolution transmission electron microscopy (HRTEM) (Rakov, 2002). It was referred to carbon nanotubes that were multi walled. The molecules contained two graphic layers and nested as Russian dolls. The molecules have diameters of four 4nm. Two years later Bethune and IBM Almaden research centre colleagues, lijima and ichihashi of NEC created a carbon nanotubes that were single walled. Single walled nanotubes were synthesized in the same way to multi walled carbon nanotubes but some metallic particles were added to the electrodes of carbon. The procedure resulted to the difference in appearance among the two molecules. The individual tubes are looped and curled than straight. Twenty fours ago, the electronic properties of single walled nanotubes were predicted by two different research groups. Their findings revealed that single walled nanotubes can either be semi conducting or metallic depending on their diameter or chirality. The prediction was later confirmed by the various experiments done (Crandall, 2007). Since then a review on synthesis, application, electronic properties, characterization and basic metallic properties of carbon nanotubes have been done. The various properties possessed by carbon nanotubes have made it the most investigated nanostructure materials. The various properties of carbon nanotubes have made companies and researchers to apply them in various fields. The molecule has been applied in the fields of energy. It has been applied as an anode for Li-ion batteries. The carbon nanotubes used, is usually coated with silicon to increase the capacity of the battery to more than ten times. Silicon expansion during the cycle of discharge has resulted to anode damage. The application of nanotubes to the silicon anode is aimed at preventing damage caused (Mordkovich & Karaeva,