Tuesday, May 22, 2012

History of fireworks-Refrences

        Bennett, J. (n.d.). Fireworks Magazine - History of Fireworks. Fireworks Magazine - homepage. Retrieved October 31, 2011, from http://www.fireworks-mag.org/history.html
      Bradley, C. (n.d.). History of Fireworks. Pyro Universe. Retrieved October 31, 2011, from www.pyrouniverse.com/history.html
       Conkling, J., & Decker, M. (n.d.). Chemical of the Week -- Fireworks!. Science is Fun in the Lab of Shakhashiri. Retrieved October 31, 2011, from      http://scifun.chem.wisc.edu/chemweek/fireworks/fireworks.htm
       Fireworks - Wikipedia, the free encyclopedia. (n.d.). Wikipedia, the free encyclopedia. Retrieved October 31, 2011, from http://en.wikipedia.org/wiki/Fireworks
      Lavoisier. (n.d.). Gunpowder - Wikipedia, the free encyclopedia. Wikipedia, the free encyclopedia. Retrieved October 31, 2011, from http://en.wikipedia.org/wiki/Gunpowder
       Wolchover, N. (2011, July 1). How Do Fireworks Make Shapes?. Life's Little Mysteries. Retrieved October 31, 2011, from www.lifeslittlemysteries.com/fireworks-shapes-patterns-pyrotechnics-1821/

History of fireworks-Modern day


Now in the 21st century, gunpowder based weapons can be found everywhere, among civilians and the military. The advancement of these new weapon systems has come the advancement of fireworks as well. In the beginning, pyrotechnics could only create a few colors of fireworks, but because of new technology, they discovered many more.  Pyrotechnics discovered that “The amount of energy emitted is characteristic of the element, and the amount of energy determines the color of the light emitted.”(Conkling, 1985). Pyrotechnics discovered even more ways to make fireworks even more beautiful, they turned the sparks into artistic shapes. They way to turn them into shapes comes down to how you arrange the aerial shells. If you pack the aerial shell in a certain order, it will come out in the shape you want to form, and new shapes are being created every day. It is said that this was most likely discovered by a number of pyrotechnics working for a company based in China, which is the largest exporter of fireworks in the world.

History of fireworks-Development


  Gunpowder was brought to Italy by Macro Polo in 1292 from the Orient. Later on in the 15th century the Italians began working on the gunpowder to make it into an art form. They created fireworks and aerial shells that were propelled into the sky.
 In China, gunpowder was used in warfare as fire arrows. “They were very effective against soldiers on horseback.”(Bennett, 2008) Arabs acquired knowledge of gunpowder in the 13th century from India, although it originated from China.  They created the first cannon in history and it was used against the Mongols in the battle. It is believed from an old text that Arabs used handheld cannons/guns in the battle of Ain Jalut against the Mongols, and it is considered the very first kind of portable firearm.
 Later on in the 17th century, came the era of gunpowder warfare, when people started using artillery and handguns in wars. They were the weapons of choice for this new era, but gunpowder based weapons were limited, until they became universal in the early modern era, which led to the beginning of increased production (Lavoisier, 2012)

History of fireworks-past

The discovery of fireworks dates back to 2000 years ago in China during the Han dynasty (~200 B.C.). The very first firecracker was discovered by a man that needed fuel for his fire by accident. He threw a green bamboo stick in the fire, which had air pockets in it. When the air pockets heated up they exploded because of the pressure, which produced a very loud bang that scared every living thing, “It was named the “bursting bamboo”(Bradley, 2007) The Chinese people believed that it would scare evil spirits off. However, gunpowder was discovered about 400 to 600 years before the discovery of the pao chuk during the Sui and Tang dynasties (~600-900 A.D.) The very first pyrotechnic was believed to have discovered gunpowder, when he was experimenting with sulfurous mixtures to try and find a cure for death. h

Saturday, May 12, 2012

Water shortage in Somalia

 

 
Introduction

Water is the most important factor for sustaining life. It’s important for humans, animals, and even crops. Water shortages are the main reason for many problems all over the planet. The main cause of water shortage in most countries is droughts. Drought is an irregularly long period of low or no rainfall and that is a reason for the drying up of many water wells in many regions. In addition, statistics show that half of the hospital beds worldwide are occupied by patients diagnosed with water related diseases, and water and sanitary crises claim the lives of more people through disease than war does. 2.6 billion people worldwide live without basic sanitation, 88 percent of the diseases presented by these people are caused by unsafe water (facts about water and sanitation, 2012). Others statistics recorded worldwide are:

· 1.4 million children die every year as a result of diseases caused by unclean water and poor sanitation.

· For children under five, water-related diseases are the leading cause of death.

· Girls under the age of 15 are twice as likely as boys of the same age to carry the responsibility of collecting water.

· Parasitic infection transmitted through unclean water and poor sanitation hinders the learning potential for more than 150 million children.

The shortage of water as well as the lack of sanitation creates a life filled with difficulties, disease, and low educational opportunities(facts about water and sanitation, 2012).





Problem

Somalia is one of the most troubled countries in Africa as it is run by war lords who exposed the people to a lot of violence and bloodshed. The country of Somalia has many problems, one of which is a severe water shortage. Water shortage is the main reason for AWD(acute water diarrhea), a disease which claimed the lives of 12 people from villages surrounding the capital Mogadishu (Somalia: water shortage to blame for awd outbreak, 2009).only 29% of the Somali population has access to safe and clean water. Most of these 29%are forced to walk about 20 km in order to get to the water, and others have to sell their belongings in order to be able to buy water(mannak, 2009). In 2011, the voice of America news agency published an article titled “Somalia: drought brings water shortages, high food prices”, which discussed the outcomes of the water shortages and the downside it had on the population. People feared that due to the water shortage, livestock might start to die in large numbers and that would cause villagers to move back to the unstable capital in search for food. The U.N already pays a total of $60 million to meet the food needs of the Somali people, but if droughts keep occurring then an estimate of more than $150 million will be needed to meet the food needs of the population(decapua, 2011).on the other hand, the fear wasn’t only of dying livestock but also of migrating livestock. Livestock migrated in search of more water in order to survive, lowering the amount of dairy products available and increasing the levels of malnutrition in many regions of the country (press release: Somalia faces severe water crisis as drought looms, 2011).it was not only the livestock migrating, as droughts were also the main reason for many people abandoning the villages that surrounded adado town, due to the drying up of the local wells and bark ads (water pans). The only water available to remaining villagers was 75 km away, which left them with the sole option of water trucking, which is considered difficult and expensive for villagers (Somalia: galgadud villages abandoned as water shortage bites, 2010).






Solutions

The U.N along with other humanitarian organizations is already working on finding solutions to the Somalia water crisis. In solving such crises internationally in Somalia, foundations shouldn’t only focus on the shortage of water but also on the proper uses of sanitation of already available water sources. Well-funded organizations would be able to provide state- of- the- art equipment, that would secure, purify and distribute water for domestic and agricultural uses (our background, 2003). Drilling new water wells in areas that have no water or only have access to contaminated water, is required in order to provide new water supplies. In the case of polluted water, the solution would be digging below the surface of the pollution spill in order to reach uncontaminated water supplies and then insuring that recontamination does not occur. On the other hand, reverse osmosis can also be used to purify already polluted water. New disinfection technologies and new distribution techniques can be used on water supplies only contaminated with microorganisms(our background, 2003). However these major organizations that call themselves “humanitarian” will have to spend millions of dollars in creating such solutions. Keeping in mind that they are aware that it’s a charity based action and they will not gain anything from it as a profit. This would then take us back to square one because obviously most if not all of these “humanitarian” organizations might decline such widespread activities.


Conclusion

Droughts are the main reason for water shortage in Somalia, which is one of the main causes of human suffering. Water shortage causes many more problems than the unavailability of drinking water, such as the increase in food prices, the possibility of livestock death and the increase in malnutrition levels. Water is an essential substance for humans, animal and plants for survival, therefore, a lot of effort should be concentrated into finding and developing new water supplies for countries and regions suffering from such a crisis. Most if not all of Somalia's clean water supplies are running very low and its causing many villagers to leave their homes and farms to look for new water supplies and clean wells. They end up going back to their homes because they couldn’t find anywhere else or the place they found was too expensive for them to afford. (mannak, 2009)these demographic changes are affecting the traditional farming practices and causing soil erosion which leads to a lowering of gross domestic product.

Wednesday, May 2, 2012

Final Assignment Bibliography:


Final Assignment Bibliography:


DeCapua, J. (2011, February 25). Somalia: Drought Brings Water Shortages, High Food Prices | Africa | English. News | English. Retrieved May 2, 2012, from http://www.voanews.com/english/news/africa/decapua-somalia-drought-25feb11-116919323.html

Gitahi,, S. (n.d.). Somalia - Water Management amid recurrent drought.Waterwiki. Retrieved May 2, 2012, from waterwiki.net/index.php/Somalia_-_Water_Management_amid_recurrent_dr

Mannak, M. (2009, May 21). Food and water shortage ravage Somalia - 400.000 lives at stake | NowPublic News Coverage. NowPublic.com | The News is NowPublic. Retrieved May 2, 2012, from http://www.nowpublic.com/world/food-and-water-shortage-ravage-somalia-400-000-lives-stake

Press Release: Somalia faces severe water crisis as drought looms | FSNAU. (2011, January 28). FSNAU. Retrieved May 2, 2012, from http://www.fsnau.org/in-focus/press-release-somalia-faces-severe-water-crisis-drought-looms
Ryan's Well Foundation | Learn the Facts | About Water and Sanitation. (2010, July 18). Ryan's Well Foundation | Home. Retrieved May 2, 2012, from http://ryanswell.ca/learn-the-facts/facts-about-water-and-sanitation.aspx

IRIN Africa | SOMALIA: Galgadud villages abandoned as water shortage bites | Somalia | Early Warning | Economy | Environment | Food Security | Refugees/IDPs. (2010, March 17). IRIN • humanitarian news and analysis from Africa, Asia and the Middle East - updated daily. Retrieved May 2, 2012, from http://www.irinnews.org/Report/88454/SOMALIA-Galgadud-villages-abandoned-as-water-shortage-bites

IRIN Africa | SOMALIA: Water shortage to blame for AWD outbreak | Somalia | Early Warning | Environment | Health & Nutrition. (2010, April 30). IRIN • humanitarian news and analysis from Africa, Asia and the Middle East - updated daily. Retrieved May 2, 2012, from http://www.irinnews.org/Report/83377/SOMALIA-Water-shortage-to-blame-for-AWD-outbreak

UNICEF Somalia - Water, environment and sanitation - Action. (n.d.). UNICEF - UNICEF Home. Retrieved May 2, 2012, from http://www.unicef.org/somalia/wes_95.