Monday, 27 July 2009

About My project "The History of Wind Power"

Humans have been using wind power for at least 5,500 years to propel sailboats and sailing ships, and architects have used wind-driven natural ventilation
in buildings since similarly ancient times. The use of wind to provide mechanical power came somewhat later in antiquity.

The Babylonian emperor Hammurabi planned to use wind power for his ambitious irrigation project in the 17th century BC. The ancient Sinhalese used the monsoon winds to power furnaces as early as 300 BC evidence has been found in cities such as Anuradhapura and in other cities around Sri Lanka. The furnaces were constructed on the path of the monsoon winds to exploit the wind power, to bring the temperatures inside up to 1100-1200 Celsius. An early historical reference to a rudimentary windmill was used to power an organ in the 1st century AD. The first practical windmills were later built in Sistan, Afghanistan, from the 7th century. These were vertical-axle windmills, which had long vertical driveshafts with rectangle shaped blades. Made of six to twelve sails covered in reed matting or cloth material, these windmills were used to grind corn and draw up water, and were used in the gristmilling and sugarcane industries. Horizontal-axle windmills were later used extensively in Northwestern Europe to grind flour beginning in the 1180s, and many Dutch windmills still exist.

In the United States, the development of the "water-pumping windmill" was the major factor in allowing the farming and ranching of vast areas of North America, which were otherwise devoid of readily accessible water. They contributed to the expansion of rail transport systems throughout the world, by pumping water from wells for the steam locomotives. The multi-bladed wind turbine atop a lattice tower made of wood or steel was, for many years, a fixture of the landscape throughout rural America.

The first modern wind turbines were built in the early 1980s, and have been subject to increasingly efficient design.

Monday, 8 June 2009

Using Recycled Boxes When Moving

With the rising concern about our fragile planet, more people are looking for ways to lead environmentally friendly lives. This includes implementing measures to save energy, recycle, and protect our natural resources. Recycling has become a method that everyone can put into practice. When moving to a new home or apartment, people can use recycled boxes to help protect the environment and save money.
There are many reasons why people choose to recycled boxes when moving, including:
- Using recycled boxes cuts down on waste because boxes are used more than once.
- It is environmentally friendly. Up to 65% less energy is required to make new paper from recycled paper than from virgin wood. (U.S. Department of Energy) Every ton of recycled paper saves approximately 17 trees and millions of gallons of water.
- Recycled boxes are the same quality and strength as new boxes.
- There are many economical advantages to using recycled boxes
- Box manufacturers have improved boxes and now make stronger boxes using less material.
- There is a growing demand for old corrugated containers which can economically benefit communities who recycle these containers.

Moving companies that provide recycled boxes choose their boxes from factory surplus boxes, boxes that contain a minor defect such as size, type, or misprint, boxes bought from homeowners who have recently moved, as well as used boxes purchased from other suppliers such as self storage companies and national moving companies.
It is very easy to obtain environmentally friendly packaging. You can use your own recycled newspapers or ask your friends to start saving their papers. For delicate items, you can use recycled paper and grocery bags which are heavier. There are biodegradable pellets that are made from recycled diapers or corn starch. Environmentally friendly packaging also includes recycled plastic wrap, recycled bubble wrap, recycled paper towel,
and towels. There are now packing peanuts that are made from recycled material as well as bio degradable materials. Wood pallets are often used when moving or shipping items, however, there are now plastic pallets that are made of recycled products. This not only saves trees but saves you money because you can reuse the pallets.
There are a number of economical advantages to using recycled boxes when moving that include:
Buyback Guarantee: Some moving companies will offer clients a Buyback guarantee for their moving boxes. They will buy the moving boxes back
after the customer has finished moving. The price can vary from full purchase price or a percentage of what the customer paid for the boxes.
Take a Box, Leave a Box: Some moving companies will provide a box drop-off location for companies and individuals so that new customers will be able to take the boxes for their own moving needs.
Moving Box Rentals: Use rentals if possible. Some companies will rent boxes and supplies to their customers. The boxes are usually a heavy plastic.
Renting boxes eliminates waste.
There are other ways one can obtain recycled moving boxes. Check with supermarkets and other store managers to see if they have extra boxes. If you are unable to obtain used boxes, purchasing new boxes made from 100% recycled materials is a good choice. Boxes made from 100% recycled materials are just as strong as new boxes.
Everyday more people are doing their part to protect the environment. With millions of people moving each year, choosing recycled moving boxes has become a positive way to help protect the planet. It is good for the environment, community, and your wallet.

Sunday, 31 May 2009

Using The Dictionary


On 11 September 1940, George Stibitz was able to transmit problems using teletype to his Complex Number Calculator in New York and receive the computed results back at Dartmouth College in New Hampshire. This configuration of a centralized computer or mainframe with remote dumb terminals remained popular throughout the 1950s.
However, it was not until the 1960s that researchers started to investigate packet switching — a technology that would allow chunks of data to be sent to different computers without first passing through a centralized mainframe. A four-node network emerged on 5 December 1969; this network would become ARPANET, which by 1981 would consist of 213 nodes.[19] ARPANET's development centred around the Request for Comment process and on 7 April 1969, RFC 1 was published. This process is important because ARPANET would eventually merge with other networks to form the Internet and many of the protocols the Internet relies upon today were specified through the Request for Comment process.
In September 1981, RFC 791 introduced the Internet Protocol v4 (IPv4) and RFC 793 introduced the Transmission Control Protocol (TCP) — thus creating the TCP/IP protocol that much of the Internet relies upon today. However, not all important developments were made through the Request for Comment process.
Two popular link protocols for local area networks (LANs) also appeared in the 1970s. A patent for the token ring protocol was filed by Olof Soderblom on 29 October 1974 and a paper on the Ethernet protocol was published by Robert Metcalfe and David Boggs in the July 1976 issue of Communications of the ACM.


Chunk (chŭngk) noun

  • A thick mass or piece: a chunk of ice.
  • Informal. A substantial amount: won quite a chunk of money.
  • A strong stocky horse.

Thus (THŭs) Adverb

  • In this manner: Lay the pieces out thus. See Usage Note at thusly.
  • To a stated degree or extent; so.
  • Therefore; consequently: Thus it was necessary for me to resign.
  • For example: Few of the nation's largest cities are state capitals; thus neither New York nor Chicago is the seat of its state's government.

Internet (ĭn'tər-nĕt') noun

An interconnected system of networks that connects computers around the world via the TCP/IP protocol

Monday, 11 May 2009



I was born and raised in Maracaibo. I’m 26 years old and I’m the oldest of two brothers. I am an Engineering student at URBE in Maracaibo.I enjoy listen to music, go to the movies but I prefer the action movies than other kind, go to the gym and search information about new technologies. I like travel to other countries and know other cultures. On weekends I go out for dinner with my friends. I think the English is a very important language today because it’s the universal language, in my free time I listen to music in English to practice and in this course I’m going to learn other tips about the English.