Nano materials and particles can act as catalyst to increase the reaction rate along with that produce better yield as compared to other catalyst.
Some of the most interesting properties when particle gets converted to nano scale are substances which usually stop light become transparent (copper); it becomes possible to burn some materials (aluminum); solids turn into liquids at room temperature (gold); insulators become conductors (silicon). A material such as gold, which does not react with other chemicals at normal scales, can be a powerful chemical catalyst at nanoscales. These special properties which we can only see at the nano scale are one of the most interesting things about nanotechnology.
Hattem
Hattem is a municipality and a city in the eastern Netherlands.
Hattem became a city in 1299. That is one year before Amsterdam.
Alex McLeish
Alex McLeish is a Scottish association football manager. He was born in 1959 and is currently manager of Aston Villa F.C. after his reign in Birmingham City F.C.. He also managed Rangers F.C. and the Scotland national football team.
Óscar Arias
Oscar Arias was born on 13 September 1940 in the city of Heredia. He is a former President of Costa Rica. He was president two times. First in 1986 to 1990, later in 2006 to 2010. He received the Nobel Peace Prize in 1987 for his efforts to end civil wars in Central America. He is also a winner of the Albert Schweitzer Prize for Humanitarianism and a trustee of Economists for Peace and Security.
In 2003, he was elected to the Board of Directors of the International Criminal Court's TrustFund for Victims. He is also a member of the "Club de Madrid". It is a nonprofit organization. It is made up of 81 former leaders of democratic nations. They work to strengthen democracy.
Arias started his political career in the 1970s.
In January of 2005 Arias was selected as the candidate for the National Liberation party. He was reelected as president of Costa Rica. There was a lot of criticism for his support towards the Free Trade Agreement process in Costa Rica. Because of his political background and determination, many Costa Ricans still trust and respect Arias.
Universal history
Universal history, world history or global history examines history from a global perspective.
It looks for common patterns that one can find across all cultures. Universal historians use a thematic approach. That means they look at history from two viewpoints: On the one hand they look at processes of world history that have drawn people of the world together, on the other hand they want to find out how patterns of world history reveal the diversity of the human experience.
The study of universal or global history is in some ways a product of the current period of accelerated globalization. This period has two tendencies: it integrates various cultures and it shows their differences when people of different cultures and civilizations have to live with each other.
To discuss "the history of the world" in a unified framework is not that new. For example, it was a genre popular in the 19th century, and with Christian historians going back to at least the 4th century.
Brewery
A brewery is a building, where beer is made or a business (brewing company) whose trade is the production and sale of beer.
Breweries can take up several city blocks, or be a collection of equipment in a homebrewer's kitchen. The diversity of size in breweries is matched by the diversity of processes, degrees of automation, and kinds of beer produced in breweries. Typically a brewery is divided into distinct sections, with each section reserved for one part of the brewing process.
The oldest brewery in the world still in operation is believed to be the Bavarian State-owned brewery Weihenstephan, found in the German city of Freising, which can trace its history back to 1040. Although the Zatec brewery in the Czech Republic claims it can prove paying beer tax in 1004.
Butane
Butane is an organic compound with the chemical formula . It is an alkane with four carbon atoms. It is used as a fuel (sometimes with propane) and in aerosol cans.
Butane is sold in canisters, for cooking and camping. It is also used as fuel in cigarette lighters, and as propellant in aerosol sprays or deodorants. Some kinds of Butane are used in refrigerators.
Mixtures with Propane are known as LPG.
Butane can be hazardous. Inhalation can lead to death by asphyxiation due to displacement of oxygen in the lungs. Contact with the skin can lead to frostbite. If the gas is mixed with air and ignighted it is prone to explode like many other fuels that are volatile
Liquefied petroleum gas
Liquefied petroleum gas (also known as LPG, LP Gas or autogas) is a mixture of hydrocarbon gases. It is commonly used in the household, for example for cooking, or as fuel for heating. LPG is replacing Chlorofluorocarbons more and more, also because it is less harmful to the ozone layer.
Very often, mixes of propane and butane are sold.
Aerosol spray
Aerosol spray is a system used in certain containers, like spray cans. The contents of the can, like color or deodorant are pressurized. The can has a valve. When this valve is opened, the liquid is forced out. It will emerge as an aerosol or mist. Apart from the liquid, there is another substance in the container, usually called propellant. When the valve is opened, some propellant will be forced inside the container. That way the pressure in the container is kept constant.
Around 1790, it was discovered that a carbonated beverage was pushed out of a container in France.
In 1837, the syphon was invented.
In 1862, several experiments with liquid spraying using compressed gas were held.
In 1927, Norwegian engineer Eric Rotheim proposed the first usable aerosol balloon construction.
In 1943, Americans Lyle Goodhugh and William Sullivan, commissioned by the US government, developed a "bug bomb" (World War II was going on, and it was necessary to find a way to quickly spray insecticide in order to control insect-borne diseases). This date is considered to be the beginning of the mass production of aerosol balloons.
In 1947, aerosolized insecticides appeared on the mass market.
In 1949, Robert Abplanalp invented the modern spray valve. In the same year, Edward Seymour started the production of spray paint.
The instructions for most aerosols warn that it is forbidden to spray it near open flames, electric stoves, and so on.
It is also forbidden to overheat balloons and put them in the sun in hot weather, as well as on heaters. There were many cases of balloon explosions in hot weather, as well as pyrotechnic entertainment of detonating aerosols on fires, which is a rather dangerous activity.
Max Born
Max Born (11 December 1882 – 5 January 1970) was a German-British physicist and mathematician who was important in the development of quantum mechanics. He also made contributions to solid-state physics and optics and supervised the work of a number of important physicists in the 1920s and 30s. Born became a British subject in 1939. He won the 1954 Nobel Prize in Physics.
He was of Jewish descent.
Born's descendants include his grandaughter Olivia Newton-John and his great-granddaughter Chloe Rose Lattanzi.
United Nations Office for Outer Space Affairs
The United Nations Office for Outer Space Affairs (UNOOSA) is a branch of the United Nations General Assembly. UNOOSA creates, maintains and carries out the General Assembly's rules about space.
The building for UNOOSA is located in the United Nations Office in Vienna in Austria.
UNOOSA operates the Programme on Space Applications and maintains a list of objects sent into space - the Register of Objects Launched into Outer Space. UNOOSA also helps developing nations develop space technology to help their economies.
Craig Mello
Craig Cameron Mello (born October 18, 1960) is an American biologist and Professor of Molecular Medicine at the University of Massachusetts Medical School.