Tidal stream generators (TSGs) make use of the kinetic energy of moving water to power turbines, in a similar way to wind turbines that use moving air.
A TSG is a machine that extracts energy from moving masses of water, or tides.
Energy can be captured from tidal streams using two methods,
Tidal fences andTidal turbines.
Dynamic tidal power or DTP is a new an
1. The Necessity of the Study
1.1 . Natural Disasters in Korea on the Rise
Humankind in modern society has been leading an affluent life by virtue of the rapid scientific progress. However, we are never safe from natural disasters such as a typhoon and an earthquake which are powerful enough to bring it down.(A Research on the Actual Condition of the Victims of Natural Disasters in Korea and
and supply are always unstable and that causes the global problem. The finitude of original resources and threat to the environment also motivate the development of new energy. In this stream, the energy of nuclear fission and nuclear fusion, solar energy, subterranean heat energy, hydrogen energy, tidal energy and so on are researched with activity by scientists. Among them, hydrogen energy sys
5. C02 emision
this graph shows the amount of co2 emission for each energy source. coal is the highest source emitting co2, and then gas, petrol in a row.
6. energy dependence in korea
import rate : 96.62%, independence rate : 16.17%
South Korea consumed over two million barrels of oil per day in 2009, making it the tenth largest consumer of oil in the world. The country ha
and the 32-bit era
Following Bill Gates's internal "Internet Tidal Wave memo" on May 26, 1995 Microsoft began to redefine its offerings and expand its product line into computer networking and the World Wide Web.[ The company released Windows 95 on August 24, 1995, featuring pre-emptive multitasking, a completely new user interface with a novel start button, and 32-bit compatibility; similar to
of north pole glacier :
2080
2040
2013~2018 !!!!!!!
3.Global warming glaciers are melting
change of sea current change of weather
- A protocol to UNFCCC
- Fighting Global warming
- Adopted on 11 December 1997 in Kyoto, Japan
- Entered into force on 16 February 2005
- 187 states have signed and ratified (Nov., 2009)
and the main onshore oil fields are located here.
The two main bridges, Maqta and Mussafah, connect the island of Abu Dhabi city to the mainland, with others currently being constructed. There are around 200 islands which fall under Abu Dhabi territory, some of the major ones include, Saadiyat, Al Futaisi, and Sir Bani Yas Island.
Abu Dhabi’s coastline extends to over 600 kilometers and
and restructuring. By using the foreign workforce that wages are relatively smaller than domestic manpower can make an effect like the government give subsidy for enterprise. It is delaying an industrial structure change. Thus, a social problem is occurring by a being not enough of a foreign manpower. system. Therefore, in order to solve this we should check how the current foreign workforce syst
■ Introduction : What we are going to find out?
Steel is a fundamental material for economic development because it is a primary raw material in an industrial age. On that account, developing countries as well as developed ones are taking an interest and putting a lot of efforts on the steel industry.
There are manifold steel products. But, briefly, they can be classified as “steel plates
1. Introduction
Internet is one of the fastest growing media that has an enormous effect on our life today. As already being aware of this, many of our lives have changed into parts of Internet. During this, recently portal site has become a very important concept, which can be powerful tools for delivering information to us. Portal means a gateway literally and most of the Netizen pass through