Oracle Application Development
Framework 11g Essentials
Your Partner of IT Exam
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1.You select a binding In the page definition file and set the ChangeEventPolicy property to ppr.
What effect does this action have on the way the page is rendered?
A.It allows a component to partially refresh another component whose partialSubmit property is set to true.
B.When a user selects a new value...
...Gathering water for African villages is a job placed on the women. They spend countless hours carrying water from distant sources. These sources are often polluted and this continuous effort is an enormous waste of time that could be better used for childcare and education (Wanja). According to J.W.N. Riviere in a publication called "Threats to the Worlds Waters", women and girls in Africa spend 40 billion person hours a year hauling polluted water. Both natural and man-made pollutants have damaged water quality in Africa and India, which has adversely affected the population's health and wasted time.
The poorest coverage for water supply and sanitation is in Africa. It is estimated that the current investment is 1.3 billion dollars per year. This amount of coverage is completely inadequate for this continents needs (Wanja). It is estimated by a report called "Year 2000 Progress Report" from the World Health Organization that the funds necessary on a yearly basis for water supply and sanitation is 2.2 billion dollars. This report also stated that over half of the population of Africa currently lacks safe drinking water. It also says that two thirds of the population doesn't have a sanitary means of human waste disposal.
In Africa, polluted water, water shortages, poor water management, and improper waste disposal all...
September 27, 2010
Waterpollution is when a body of water is adversely affected due to the addition of large amounts of materials to the water. (www.imbgnet.net) There are four types of waterpollutions and I’m going to describe each one of them. I’m also going to tell you the solutions that I can up with and how I’m going to get the government and people involved to help. It is a lot of things that we don’t know aboutwaterpollution and how bad it is for our health. Every year, 14 billion pounds of sewage, sludge, and garbage are dump into the water. (www.thinkquest.com)
Nineteen trillion gallons of waste also enter the water annually and it is a hard thing to clean up. The first type of waterpollution I’m going to talk about is Toxic substance; which is a chemical pollutant that is not a naturally occurring substance. This is what we would call man made material that we dump into the water every day. The second one is Organic substance that occurs when an excess of organic matter such as manure or sewage enters the water. This is a natural thing that we as humans can try to stop at a point in time.
Waterpollution is a point...
According to the Columbia Encyclopedia, waterpollution is defined as contamination of water resources by harmful wastes. In most cases this contamination is a result of people overloading the water environment with wastes. The scope of this problem covers any and all water sources including but not limited to streams, lakes, underground water, bays or oceans.
II. Statement of Problem
It is no misconception that water is a necessary compound to all life on Earth. Absolutely all organisms need water in one form or another. Plants and animals including humans require water that is reasonably pure, and they cannot survive if their water is encumbered with toxic chemicals or harmful microorganisms. If severe, waterpollution is capable of harming and even killing fish, birds, and other animals, in some cases wiping out the entire population of a species in that affected area. Pollution makes streams, lakes, and coastal waters unpleasant to look at, to smell, and to swim in. The fish and shellfish that live in these polluted waters are no longer suitable for consumption, so the harvesting of such could have impairing effects to the general population. Even though illness might or might not appear initially,...
...Waterpollution in China started with industrial development and has become more one of the most devastating environmental problems faced by the country today.
From the chart, we can see that as the country’s GDP rises, the volume of wastewater discharge increases as well. This suggests that to achieve a rise in GDP, the environment has to be sacrificed. The reason for this is that wastewater treatment techniques and facilities have fallen far behind from the growth of industrial production and city construction. Official data shows that more than 4.4 billion tons of untreated or partially treated wastewater is dumped into the river annually, and this has incurred an economic loss of 7 billion yuan.
All of these have resulted in more than a third of China’s rivers and 90% of its urban water supplies to be heavily polluted. A famous example would be the Pearl River Delta contamination in Guangdong province. The delta was previously known as “String of Pearls” but the contamination was so bad that it is now known as the Poisoned Pearl.
There are 2 main causes of waterpollution in China, namely pulp and paper production and manufacturing.
The paper industry is one of the most fatal industries as it has the highest chemical oxygen demand and contributes most to China’s organic water...
...Waterpollution and pollution in general is a problem that people don't like to deal with. Waterpollution can cause so much damage to people and to the animals that live in that body of water. The laws that we have are doing what they need to but we need to monitor the water more closely because if we don't catch the pollution when it happens it could cause a big disaster. It could kill all of the plant life that lives in the water and the animals that live there to. Some of the pollutions that occur are very hard to clean up and things might never be the same that it was. To clean something up it takes a lot of hours and a lot of man power to get this mess taken care of. Waterpollution could be the cause of some animals being endangered. The government needs to strongly enforce environmental policies in order to resolve the current problems that our facing our bodies of water.
The laws that we have right now are doing what they need to. It is control the pollution level right now. It can get out of hand at any time. It just takes one big oil spill or someone dumping large amounts of items into the water. All kinds of things can cause pollution and we can't watch over everything. Water...
All around the world, countries are fighting to keep their water clean. Whether it's streams, rivers, lakes, or the ocean, countries have taken great measures to maintain a high quality of water for both human consumption and as a key component to the environment. We deal with the pollutionproblems and then decide on ways to clean it up. This valuable resource is the key to survival. Both plants and animals depend on water for their growth, so the water must be kept clean. The major contributors to waterpollution can be classified in three categories, industrial, agricultural and municipal.
Examples of industrial wastes that can contaminant bodies of water are oil spills, acid rain, and waste run-off from industrial buildings and factories. Oil spills, even though they do not happen that often, can spill millions of gallons of its crude oil cargo into the ocean causing long term damage. The oil spreads out over the surface of the water, creating a deadly coating. It kills fish and animals and washes on shores polluting the beaches, shutting them down to the public. Once the oil has contaminated the water, immediate action must be taken to clean it out of the water. The most common procedure is to contain the oil with oil absorbent plastic booms and...
...off eccentric leads the main eccentric by 30°; i.e., the cut off eccentric leads the crankpin by 145°. Both eccentrics have different throws and need to be designed to meet the requirements of the engine to which the governor is being applied; e.g., on the 3” by 4½” model mill engine I am making, the main eccentric has a total throw of 0.9375” which provides the main valve with a travel of the same distance. The cut off eccentric has a total throw of 0.71875” and due to the continual changing position of the cut off valve rod in the expansion link the travel of the cut off valve also varies as required to maintain correct engine speed. All in all, a very fascinating governor.
*To date this author has not been able to discover anything about Mr. Hartnell, his origin, or his technical background.