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قسم الطلاب والطالبات القسم يحوي جميع متطلبات الدراسة |
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أدوات الموضوع |
#17
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Water
Water is the most important liquid in the world. Without water, there would be no life, at least not the way we know it. This source of life makes up about three quarters of the human body. Water contains various minerals - some good for your health, others less so. Explore the different ingredients of bottled waters. Some 70% of the earth is covered with water. But nearly all is unavailable for human consumption without being processed first. The oceans make up for 97% and the polar ice shields hold another 2%. Only about 1% is soft water from lakes rives and underground sources, but even from that tiny amount an increasing part is unsafe for human consumption. Water is of major importance to all living things; in some organisms, up to 90 percent of their body weight comes from water. Up to 60 percent of the human body is water, the brain is composed of 70 percent water, and the lungs are nearly 90 percent water. About 83 percent of our blood is water, which helps digest our food, transport waste, and control body temperature. Each day humans must replace 2.4 liters of water, some through drinking and the rest taken by the body from the foods eaten. The unique qualities and properties of water are what make it so important and basic to life. The cells in our bodies are full of water. The excellent ability of water to dissolve so many substances allows our cells to use valuable nutrients, minerals, and chemicals in biological processes. About 70 percent of the Earth's surface is water-covered. But water also exists in the air as water vapor and in the ground as soil moisture and in aquifers. Thanks to the water cycle our planet's water supply is constantly moving from one place to another and from one form to another. Things would get pretty stale without the water cycle! Even though you may only notice water on the Earth's surface, there is much more freshwater stored in the ground than there is in liquid form on the surface. In fact, some of the water you see flowing in rivers comes from seepage of ground water into river beds. Humans are happy this happens because people make use of both kinds of water. In the United States in 2000, we used about 323 billion gallons per day of surface water and about 84.5 billion gallons per day of ground water. Although surface water is used more to supply drinking water and to irrigate crops, ground water is vital in that it not only helps to keep rivers and lakes full, it also provides water for people in places where visible water is scarce, such as in the desert towns of the western United States. Earth's water is always in movement, and the water cycle, also known as the hydrologic cycle, describes the continuous movement of water on, above, and below the surface of the Earth. Since the water cycle is truly a "cycle," there is no beginning or end. Water can change states among liquid, vapor, and ice at various places in the water cycle, with these processes happening in the blink of an eye and over millions of years. Although the balance of water on Earth remains fairly constant over time, individual water molecules can come and go in a hurry. The water in the apple you ate yesterday may have fallen as rain half-way around the world last year or could have been used 100 million years ago by Dinosaur. Total water use in the United States for 2000 was determined from estimates of water withdrawals for the eight categories of public supply, domestic, irrigation, livestock, and aquaculture, industrial, mining, and thermoelectric power. Total freshwater and saline-water withdrawals for 2000 were estimated to be 408,000 million gallons per day (Mgal/d), or 457,000 thousand acre-feet per year. Freshwater withdrawals were 85 percent of the total, and the remaining 15 percent was saline water. Estimates of withdrawals by source indicate that for 2000, total surface-water withdrawals were 323,000 Mgal/d, or 79 percent of the total withdrawals for all categories of use. About 81 percent of surface water withdrawn was freshwater. Total ground-water withdrawals were 84,600 Mgal/d, of which 99 percent was freshwater. Nearly all (98 percent) saline-water withdrawals were from surface water. The top row of cylinders represents where America's water came from (source) in 2000, either from surface water or from ground water. You can see most of the water we use (262,000 million gallons per day (Mgal/d)) came from surface-water sources, such as rivers and lakes. We used about 83,400 Mgal/d of ground water (from wells). The pipes leading out of the blue and brown cylinders on the top row show where the water was sent after being withdrawn from a river, well, etc. For example, the blue pipe coming out of the surface-water cylinder and entering the Public supply grey cylinder shows that 27,300 Mgal/d of water was withdrawn from surface-water sources for public-supply uses. Likewise, the brown pipe shows that public-suppliers withdrew another 16,100 Mgal/d of water from ground-water sources. Each green cylinder represents a category of water use. The Industrial cylinder, for instance, shows how much water the United States used, each day, by industries. In 2000, about 18,500 Mgal/d of water was used for industrial purposes, with about 14,900 Mgal/d coming from surface water and about 3,570 Mgal/d coming from ground water. So, now you maybe see how the two "Source" cylinders on the top row show how much water was withdrawn from the environment, and, for each water-use category (the green cylinders), the water arrives via the pipes |
#18
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Keep Clicking to Get Fit
Maybe you're looking at your sedentary lifestyle the wrong way. All of the time in front of a computer, like right now, doesn't have to work against your fitness regime. According to a new study, all of the motivation you need is right at your fingertips. Web-based intervention programs are just as effective as more traditional print-based programs in changing the habits of sedentary adults, a new study published in Monday's issue of the Archives of Internal Medicine found. A team of researchers studied 249 healthy, sedentary (less than 90 minutes of physical activity per week) adults. Participants were divided into three different programs: tailored Internet, standard Internet and tailored print. The tailored print and Internet groups had exactly the same features, including personalized feedback that the standardized group did not have. The researchers wanted to be sure the tailored groups had exactly the same features in order to test the method of delivery. This meant that there were a lot of features that were left out of the Internet group, such as chat rooms and blogs, because there was no way to replicate those in a print format. The standard Internet group, however, accessed what the researchers felt were the six best physical activity sites available to the public. Marcus said the American Heart Association' s "Just Move" was the most popular website. The other five included Shape Up America, the Mayo Clinic Fitness and Sports Medicine Center, American Academy of Family Physicians, American Council on Exercise, and American College of Sports Medicine Health and Fitness Information. All three groups kept logs of their activities and filled out monthly questionnaires. The tailored Internet group posted the biggest gains in physical activity after six months, averaging 120 minutes per week. The tailored print group was not far behind with 112.5 minutes per week, and the standard Internet group reported 90 minutes. The difference was not as notable after 12 months, with the groups reporting 90, 90 and 80 respectively. The three programs only focused on increasing physical activity, and did not take eating habits into account. Marcus said many of the people in the program reported zero activity at the beginning of the program, making the gains by all groups even more impressive. The researchers were surprised that the tailored Internet group did not have stronger gains over the standardized Internet group. They suspect that the reason may be that while they offered more personalized feedback to the tailored group, Marcus said it did not have the "bells and whistles" usually associated with Internet fitness and weight-loss programs. This study shows that the Internet is a more cost-effective way to reach the 55 percent of Americans who do not meet the Surgeon General's minimum requirement of 150 minutes a week of moderate- intensity physical exercise. And since motivation is key, the Internet offers a 24-hour smorgasbord of options to keep people clicking for more. If you're the sort of person who occasionally ventures off your couch to get moving, you may have the smoothest transition into an active lifestyle. Marcus said for the people in the study who were already doing something - as long as it is in at least 10 minute intervals - had the easiest time getting into a regular routine of exercise. The key to get moving out of your office chair or recliner, Marcus said, is to take baby steps instead of walking lunges. She recommended that with low expectations, it is much easier to exceed those goals. Starting small is even easier than you think, according to Marcus. If you're heading out to lunch or dinner, because all this thinking about activity has you famished, try walking to your dining spot, carry your lunch to a park, or at least park your car a short walk away from the restaurant. |
#19
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12Rules for Marriage
My sister asked me, as part of her wedding ceremony, to Say Something About Marriage. I've been married for over two years, so obviously I have way too much insight on this issue than could reasonably be fit into the middle of an otherwise fairly compact service, but with some effort, and some help from my wife Bethany, I got the list down to twelve potentially useful pieces of advice. These probably aren't the most useful twelve pieces of advice, but I think they're better than nothing. As delivered at the wedding last weekend: 1. Your world is getting bigger today, not smaller! More history, more friends, more possibilities. Marriage is not the end of the search, it's the beginning of all the searches that are more fun to do together. 2. Be the guardians of each other's solitudes. Not only do you need to give each other space, you need to make each other space. 3. No difficult conversations after 10pm. Not only is it harder to solve problems when you're tired, but at least half the time being tired is the problem. 4. The Dutch principle of Total Soccer means that any player can attack when there is an opportunity, and any player can defend when there is a need. In Total Marriage you only have two players, so this is even more important. Both of you should be able to do everything your team needs. You'll have your preferences and strengths and habits, but if one of you goes down, the other one has to be able to cover. 5. Wedding rings don't really come with magic powers. You will learn how to take care of each other one insight at a time. And even when you're not sure how, show up and you'll think of something. 6. Headphones; separate closets. 7. If you aren't already the world's leading experts on each other, you will be soon. It is thus your responsibility to be not only the world's biggest fans of each other's best qualities, but also the world's staunchest fans of each other's weaknesses and flaws. 8. Get pets. By far the easiest way to remember that you have to feed your shared life together is if part of it comes and stomps on you every morning. 9. No ultimatums. Ever. 10. Travel. Surprise and challenge yourselves. It's easier to have a world together if you have a world to compare it to, and part of the fun of getting to know each other is putting yourselves, together, in positions where neither of you know what you're going to do yourself. 11. Committing yourselves to one another is one of the most mature, responsible, focused decisions you can make. Balance it out by being immature, irresponsible and playful together as often as possible. 12. When people, especially your relatives, offer you long lists of marriage advice, just smile politely and nod until they finally shut up. |
#20
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Women Driving in Saudi Arabia? Why Not?
Readers who do not know Saudi Arabia well couldn't understand or appreciate the reasoning against women driving. Saudis and residents who are familiar with the issue cite logistical and practical problems and concerns. No one claims the ban is Islamic. In Prophet's (peace be upon him) time, women rode their horses and camels. In other Islamic countries, women didn't have to compromise their modest dress code to drive. And they drive as well as men, if not better and safer. Many readers fear that men, especially the young, will harass or chase female drivers. This is blaming the victim. If men are the guilty party, then let's ban them. Some suspect that if we allow women driving, it will make it much easier for dating. They say it is bad as it is. Girls pretending to be out for school and social events go for dates! Give them cars and see what happens! I say if they decide to date they will find a way. If you don't trust your kids, boys or girls, don't give them cars. But if you brought them up well, trust them. Besides, why do we assume girls would be less observant and conservative than boys? If both are as much suspect, then nobody should be allowed to drive. What difference does it make who sits on the driving seat? Other arguments focus on practicalities, like traffic jams, accidents, car breakdowns, driving in remote areas, etc. I say, we should plan and prepare. We could go gradually, allowing women over thirty to drive first, and then schedule other age groups. If they get in trouble they could use their cell phones. Mobile car service operators would help in case of breakdowns. We must take extra security measures and harsher punishment for harassers, like publishing offenders' names and photos in the papers. They did that in Dubai and it worked. We have to start by educating the public with media campaigns and encourage preachers, teachers and parents to contribute and participate. Solutions are there if we just look for them. As the Americans say, if there is a will, there is a way. I like the following e-mail message I received from a Western teacher in a girls school. It very much sums up the problem from women's perspective. It says: I am a female teacher here in the Kingdom and I teach Saudi girls English. I was pleasantly surprised at the caliber of females I have come in contact with. I listen to their frustrations on a daily basis of the restrictions (mainly of not being able to drive) placed on them. The majority are perfectly capable human beings who just need their country to stop underestimating them and their abilities and the possibilities are limitless to what they will be able to offer this society. Of course I can also understand the hesitation in allowing women to drive but I would place the fault of this completely on the men of this country. I could just imagine a car full of teenage Saudi boys hitting a woman's car just for flirting purposes and this would make me personally more apprehensive about driving in this country. The problems are structural and deep-rooted. You can't just lift the ban, but on the other hand, the longer you wait the harder it will get to change it. A suggestion would be to fill the streets with competent, well- trained and prepared police, and have them clean up the act on the streets here. Maybe after a few months of over ticketing and tight restrictions you may have a situation where women will feel comfortable driving. You will also have to have driving schools for women and then, maybe, the country can conceptualize driving for women. Another thing that needs to change is the attitude some men have toward women in this country. If the laws are there to make women feel more comfortable when in public then they are retroactive. This can only change when men begin to see women as having a more independent role in society, for example, by driving. But women can't drive until this attitude is curbed. What comes first, the chicken or the egg? It's quite the dilemma. All I can say is the situation needs to change so better to start now and deal with the problems head on, rather than just watch things become more difficult to unravel. Bite the bullet, as we would say. |
#21
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Why Is It A Good Idea To Study Abroad?
Besides the excitement of travel, one reason to study abroad is that you will experience new customs, holidays, foods, art, music, and politics firsthand. "Obviously, I learned the language and am now fluent, but perhaps more importantly was how much I learned about cultures, people, and myself. I learned this from the viewpoint of an active member of the community and my [host] family, not from the tourist's point of view," says Andrew, who studied in Poitiers, France. Another reason for studying abroad is that you'll gain self- confidence. Christina studied in Caracas, Venezuela, a city of 10 million people and a huge change from her hometown of 35,000! Christina says she learned how to better stand up for herself and her beliefs and to express herself in another language. What could make you more confident than that? Living away from home can also help you adjust in the transition to college and adulthood. Matthew says he returned from studying in Australia with confidence, social savvy, and a genuine interest in international affairs that really set him apart from his peers. "After having gone abroad in high school, I found the transition to college to be a breeze - moving 560 miles from home didn't seem particularly daunting after having lived thousands of miles away." And speaking of college, improving your language skills might help you get into choice colleges and even land future jobs. Colleges and employers know that studying abroad provides leadership skills in a world that is increasingly globally interconnected. Most of all, it's fun! You're not likely to suffer from sophomore slump or general boredom while you're studying in a different learning environment |
#22
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Plastic Surgery
Plastic surgery is also often called cosmetic surgery and has become a widespread method to reshape the body and to help to improve the appearance, it includes absolutely different operations starting with abdominoplasty and ending with eyes surgery and face lifting. Besides plastic surgery deals even more vitally important spheres, like for example repair damages caused by some accidents or injuries. It is well promoted and rather expensive but still carriers certain risks, like any other type of operation. For example, patients, who decide to make some dental operations, are put at great risks. People who go through a number of plastic operations are often still not satisfied with the result and start doing other procedures, which is of course not the best way to influence the state of the body: many people, who are overweight turn to special operations, but after the fat is gone they face the problem of lots of hanging skin. Besides most people who have done it once, will return to these operations again and again, even with the same problem, as they feel constantly not satisfied with the result and are ready to give huge sums of money, which they by the way could have used for some better needs, like really supporting their health. "Plastic surgery junkies need to think about why they keep wanting more work done. Obviously it's much easier to change your outlook on life than it is to change your external look…" (Rosen Christine, The Democratization of Beauty, 2004, p.2). So this constant seeking for perfection can be considered more of a psychological problem than real problems with appearance. To avoid such result of plastic operations, the doctors are to provide sufficient amount of explanation for the potential patient concerning the results and reasons of this operation. Some may need just a psychological help instead of this operation. And this is of course a task of the society to work out the "rules" for dealing the people, who want to make plastic surgery and do the best to defend the clients of the plastic surgery clinics. All these is a good basis for the surgeons to build their businesses upon, they can use the week sides of a person, as almost every person feels not absolutely sure about his/her appearance and would love to look better, and earn good money. People are surrounded by advertisements of "absolutely safe" and prestigious methods of changing the appearance. As any other branch of medicine, plastic surgery can have its field for development and application, but there are still certain rules or restrictions to be made about it. From the very beginning there should be a strict division between cases of application of plastic surgery, a person who was burnt or injured as a result of some accident or war or any other conflict has to make such kind of operation under the circumstances, even he doesn't want to, and a person, who watches too much television and wants to get the same face Britney Spears or Tom Cruise have, chooses to make this operation on his own free will. It is absolutely not right to make these two people pay the same price for the plastic operation. |
#23
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The Power of God
All power of decision belongs to God before and after. And on that day the believers will rejoice in God's support. He grants support to whomever He wills. He alone is Almighty, Merciful. This is God's promise. Never does God fail to fulfil His promise; but most people do not know it. They only know the outer surface of this world's life, whereas of the hereafter they remain unaware. All power of decision belongs to God before and after. And on that day the believers will rejoice in God's support. God's promise was certainly fulfilled as stated, and the believers rejoiced at the victory granted by God. He grants support to whomever He wills. He alone is Almighty, Merciful. Thus the decision is His while His support is granted to whom He chooses. Nothing opposes His will. Indeed His will, which determines the results, is the same as the will that brings about the elements and the causes that leads to these results. Thus, there is no conflict between the desired results and the prevailing circumstances. The laws that operate the whole universe are devised by the same free will. It is this will that has determined that there should be laws of nature that operate without fail, and systems to ensure stability. Both victory and defeat are the results of certain factors that work in accordance with the laws set in operation. The Islamic faith is very clear and logical. While it makes clear that all power of decision rests with God, it does not exempt people from taking the measures that are normally necessary to bring about practical results. Whether these results take effect is not part of people's responsibility, because it ultimately belongs to God's overall design. A Bedouin left his she- camel untied and went into the mosque to pray. As he entered, he said: "I fully rely on God." The Prophet said to him: "Tie your she- camel and then rely on God." (Related by Al-Tirmidhi. ) Thus, Islam makes true reliance on God conditional on taking all the necessary measures in any particular situation, knowing that ultimately all decisions are left to Him. He grants support to whomever He wills. He alone is Almighty, Merciful. Victory is thus the result of the power that makes it a reality and the mercy that fulfils what is in the best interests of people. In this way, such a victory is an aspect of mercy for both the victors and the vanquished. God says in the Qur'an: "Had it not been for the fact that God repels one group of people by another, the earth would have been utterly corrupted." (2: 251) That the earth should remain free of corruption is ultimately good for all, including those who are defeated. This is God's promise. Never does God fail to fulfil His promise; but most people do not know it. They only know the outer surface of this world's life, whereas of the hereafter they remain unaware." Such victory has been promised by God, which means that it will certainly come about in real life. For, "never does God fail to fulfil His promise." The facts of the matter are that His promise issues from His free will and absolute wisdom; He is able to fulfil it, as no power can repel His judgment. Indeed, nothing takes place in the universe except as he wills. Thus, the fulfilment of God's promise is part of the overall universal law that is subject to no alteration. Yet, "most people do not know it," even though they may appear to be great scientists who have a firm grasp and wide scope of knowledge. The fact is that their knowledge is superficial, related to what is apparent in life. It does not extend to basic laws and rules, and cannot comprehend their interrelations: "They only know the outer surface of this world's life. They cannot penetrate any deeper than this outer surface or fathom what lies beyond it. This outer surface of the present life is very limited, even though it may appear to us to be wide and vast. Only a small part of it occupies all their efforts. They cannot learn all that is related to that small part even when they devote their entire lives to it. Still, this world's life is only a small part of the great universe that is run in accordance with laws and rules operating throughout it all. A person who cannot relate to the depths of the universe and its operative laws will inevitably fail to see even though he looks. He will only see the outer shape and movement, but will fail to recognize the wisdom behind it or interact with it. Most people fall into this category, because it is only true faith that links what appears on life's surface with universal secrets. It is only that which gives knowledge its spirit that can look into these secrets. Believers who have such true faith are few among the world's population. Hence, the great majority of people are incapable of acquiring true knowledge. Whereas of the hereafter they remain unaware." The hereafter is another stage in the chain of creation; it is one of the many pages of the universe. People who do not understand the wisdom of creation or the law governing the universe remain unaware of the life to come, unable to give it its true measure and value. They do not realize that it is a part of the way of the universe and, as such, will never fail. To be unaware of the hereafter makes all measures such people use inaccurate, and their values suspect. They cannot correctly appreciate life's events and values. Their knowledge of life remains superficial, incomplete. When anyone takes the hereafter and its life into account, his perspective and the way he looks at all events in this life changes. He realizes that his life on earth is but a short stage in his journey through the universe, and his lot in this present life is but a small portion of his share in the universe. He feels that all events that take place on earth are no more than a brief act in a long play on the universal stage. To base one's judgment on a short stage, a small portion or a brief act is unwise and can only lead to error. The person who believes in the life to come and takes it into account will not be able to see eye to eye on anything with someone whose cares and interests are only for this present life, so much so that they will not be able to agree in judging a single event or question. They have two different viewpoints and perspectives; they look at things in different lights. One of them sees only the outer surface of this present life and the other looks at the bonds, laws and rules that are behind things, taking into account not only what we see in our world, but what lies beyond our perception, life and death, the present life and the life to come, and the universe stretching into the limitless. It is to such a great horizon that Islam wants humanity to look up. It is this broad perspective that befits man, the creature God has honoured when He placed him in charge of the earth |
#24
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A Visit to Italy
The capital city of Italy is a very extraordinary place to visit. The population of Rome is well over two-million. The people there are very friendly and are extremely proud of their country. Rome is a beautiful bustling city that has a moderate cli mate. The temperature usually stays around eighty degrees. The main way of transportation is by bus. The side walk cafes are very popular in Rome. The cafes were always populated with happy Italians and a few curious tourists. The most preferred cafe was the Cafe S. Petro. this cafe was in perfect walking distance from the Vatican city. The Vatica n city is were the pope lives. The main meals served at the cafes varied from pizza to tortillini. The pizzas were not exactly like Pizza Hut's pizza. They were crispy thin with very few toppings available. Most pizzas came with cheese, pepperoni and a watery tomato sauce. The tortillini had soft, medium-length, hollow noodles with more watery tomato sauce. Another favorite at the cafe was the lasagna which was unbelievably delicious. After having tasted the pizzas and the tortillini, I was not exp ecting the lasagna to be so tasty. The lasagna was packed full of hot meat, zesty cheese, and a tangy tomato sauce. It was not out of the ordinary to see Italians, instead of eating at the cafe, talking with their friends and sipping on hot cappucino. The streets in Rome were always swamped with motor scooters, three-wheeled cars, and buses. Although, the main way of transportation are buses, Italians also scooted around on their motor scooters. The scooters were more convenient because the scoote rs could easily slip through traffic jams. The parking was very hazardous for people because some cars would be blocked in by a small car that was parked vertical between two horizontally parked cars. Car accidents were very common in Rome. When two pe ople had a car accident, they would just wave or yell at each other and drive hurriedly away. The police were not notified and there was no question of who would pay for the damages. The worst part about Rome were the buses. These buses were jammed tight with people who were sweaty and excessively vulgar. The buses were small in size, the color was a dull blue, and they contained only a few seats that were rarely available. The men on these buses were extremely vulgar in their actions. Because we had to stand so close, the men had chances to pick my pockets or place their hands on my bottom. Once this incident happened, I had to practically shove them off. This did not bother them, they would just move on to the next woman. Over all, Rome is an exciting place to visit because it has so many attractions to offer. This trip will always be special to me because I got to see a different culture and had many entertaining experiences. I would advise anyone who was going to ta ke a trip to go to Italy because it is surely an amazing place to visit. |
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من, موضوع, اللي, تحت, يمكن, يحصل, عنده, writing, هنا |
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المواضيع المتشابهه | ||||
الموضوع | كاتب الموضوع | المنتدى | مشاركات | آخر مشاركة |
مريض يحصل على كلية بالخطأ | غلآ ابوهاا | أخبار المجتمع | 2 | 08-19-2013 05:30 PM |
اللي وصل نص الغلا يمكن امك | فدوك | قسم الشعر والخواطر | 11 | 12-25-2011 12:23 AM |
هل يمكن نقل الروح من شخص لآخر؟ | نهر العلقمي | المواضيع العامة | 3 | 04-06-2011 10:19 PM |
لاتيأس فالحصان يمكن ان يطير | شجاعة حيدرة | المواضيع العامة | 2 | 09-17-2010 08:10 PM |