Based on the materials from which produced disposable utensils, disposable cups can be divided into: polystyrene disposable cups (PS-PS), polypropylene disposable cups (PP – PP) and cardboard. Since we are interested polymer disposable cups, then we will stand on them. Disposable cups made from polystyrene have their advantages and disadvantages. They are cheap to produce and when used properly polystyrene disposable cup you do not feel any discomfort. Disposable cups made from polystyrene, given the physical and chemical properties of raw materials, designed exclusively for cold drinks, no their subsequent heating in a polystyrene cup in the microwave. You can use these disposable cups for chilled coffee, milk products, beer and other chilled beverages. Disposable cups made of polypropylene characterized as a higher price and a large range of their use. Polypropylene disposable cups are not afraid of high and low temperatures, they can be safely used for hot and cold beverages, and as packaging for reheating in the microwave. Determine the material from which made disposable cup is easy enough. You must read the conditional designation marked on the back of the bottom of a disposable cup, if you see the abbreviation ps is in the hands you are holding a disposable cup made of polystyrene and you should keep in mind about what to use a disposable cup neobhoditelno only soft drinks and chilled drinks. In turn, pp means that the disposable cups made of polypropylene and restrictions on use, as in polystyrene disposable cups, no, it can easily withstand high and low temperatures.
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As for training, Colombia has 4.578 teachers with doctorate and, of these, at least 60 per cent is in public universities. Quality accreditation involves having a balance between teaching staff of full time and time Chair, as well as a commitment to research, says Ana Maria Botero, Deputy Director of the Vice-Ministry of higher education quality assurance. However, the lack of resources prevents the greater involvement of high-level teachers, explains Gabriel masses, Professor and researcher at the National University. By this lack of silver they have to go en masse to teachers of Chair and it is not suitable to be many, it clarifies. To this he added, according to the Deputy Minister Botero, that there are several teachers with doctoral training who perform administrative work rather than being in the classroom. Public universities have shown that we have a commitment with the quality, but more resources do us need to do this for that reason, we do not agree that to remain University give us five years to meet quality requirements, says Daniel Vivas, President of the State University System (SUE). In quality, rescues Moises Wasserman, rector of the National University, the public have good indicators if measured by results of Ecaes (today know Pro), research and employment that graduates receive.
The Icfes data show that in tests know Pro, carried out between 2004 and 2008, and involving more than 400,000 students on a voluntary basis (37 per cent of the official sector), in nine of the ten Ecaes in the area of health, the official students science overtook the private.In administration, private them exceeded significantly, but in economics, accounting and engineering annual averages of students from official institutions were better. Regarding employability, 76.3 percent of graduates from the official sector is today used in the sector of private education, and formal, 75.4 percent. The investigative capacity is an important indicator of quality.