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1. United States Department of Energy subsidies LED lighting $ 10.1 million in two years June 18, 2013 According to the U.S. Department of Energy (United States Department of Energy, DOE) latest report, LED lamps installed capacity has increased 10-fold in the past two years from 4.5 million units in 2010 to 49 million units in 2012 in the United States, estimated that annual savings is $ 675 million in energy costs. By 2030, LED lighting is expected to account for 75% of total lighting sales, saving energy for 26 million U.S. homes. The Energy Minister Ernest Moniz (Ernest Moniz) said: "Efficient lighting industry's production can save money for consumers, while increasing employment for ... (read more) Author: floodlights lsd

2. What is regeneration June 18, 2013 What is regeneration? Wouldn't it be wonderful if people who lost an arm or a leg or even a finger in an accident could simply grow another one in its place? Human beings can't do this, but there are living creatures who can! The process by which such organisms can replace struc­tures or organs is called regeneration. Regeneration varies quite a bit among these creatures. For example, in certain types of worms and in starfish, a tiny part of the body can restore the whole organism. If only a small piece is left, a whole new body will grow! At the other extreme, we ... (read more) Author: SM Bakhtiar

3. What is fat June 18, 2013 What is fat? Everybody today is so weight-conscious, and so many people are on diets, that you could probably say fat is something nobody wants. Yet fat, of course, is very necessary to the body. It accumulates in this way: At certain points, the connective-tissue cells become filled with fat. First, tiny droplets appear inside the cells. They increase in size, run together into a large drop, and finally fill the cell and swell it out like a balloon. Eventually, the cell is changed into a large drop of fat surrounded by a thin envelope of tissue. This takes place only in certa... (read more) Author: SM Bakhtiar

4. What is an enzyme June 18, 2013 What is an enzyme? The body of every living animal and plant is a chemical factory. In fact, if all kinds of chemical changes weren't constantly taking place, life would be impossible. You are able to use food, breathe, grow, and move because of the chemical changes which take place in the cells, tissues, and organs of your body. Here is an example of this chemical life process. You eat a piece of bread, or a cereal, or a potato. The starch in this food is changed into sugars which go into the blood. There they are burned by the oxygen which is in the air you breathe, and your... (read more) Author: SM Bakhtiar

5. Why is sunshine healthful June 18, 2013 Why is sunshine healthful? Everybody has a kind of instinctive feeling that being in the sunshine is good for us. But did you know that there are specific scientific reasons why this is so? Let's consider some of the things that happen when we expose our bod­ies to the rays of the sun. Sunlight actually destroys certain fungi and bacteria that may have settled on the skin. It acts as a pretty strong medicine in this way! Another way in which it acts as a medicine is by causing the white blood cells, or phagocytes, to become more active. These are the cells which attack dise... (read more) Author: SM Bakhtiar

6. Why is bread called "the staff of life" June 18, 2013 Why is bread called "the staff of life ?" Wherever you may go in the world-whatever the local customs, lan­guage, dress, or taste in food-you will find some form of bread! Of course, there are almost as many varieties of bread as there are nations. In China, bread is made from rice flour. In India, they use millet. In Germany and in the Scandinavian countries, bread is made from rye and barley. There are countries that use beans, potatoes, and even acorns in the making of bread! But bread as we usually think of it is made from cereal grains of various types. It is the most imp... (read more) Author: SM Bakhtiar

7. Why do we need vitamin c June 18, 2013 Why do we need vitamin c? The food we take into our bodies supplies us with many important substances such as proteins, fats, carbohydrates, water, and mineral substances. But these alone are not enough. In order to maintain life we need still other substances known as vitamins. Vitamins are substances formed by plants or animals. They must be supplied to the body in minute quantities so that vital processes can continue undisturbed. When there is a lack of vita­mins in our body, diseases will occur. For instance, lack of vitamin A affects our vision; lack of vitamin B produces a dis... (read more) Author: SM Bakhtiar

8. What is an odor June 18, 2013 What is an odor? Everybody likes pleasant odors-the perfume of flowers, or the aroma of a cake baking. But a disagreeable odor can be quite unpleasant. The strange thing is that the amount of odor in both pleasant and unpleasant cases can be very, very tiny! Did you know that we can detect the odor of certain sub­stances if only 0,000,000.000 part by weight is present in a given weight of air? And this is true of man-whose sense of smell is a fraction as good as that of What is it that produces what we call an odor? We detect an odor when a chemical substance comes in contact with certain... (read more) Author: SM Bakhtiar

9. How do we taste our food June 18, 2013 How do we taste our food? Taste depends on the impact of the atoms given off by a substance on certain specially sensitive organs in our bodies. If the atoms of a sub­stance can't move about freely, we can't taste it. That's why we can only taste things that are in a state of solution. Animals that live in water have taste buds all over their bodies. For instance, fish can taste with their tail fins! Animals that live on land have their taste buds concentrated in their mouths, and in man they exist only on the tongue. If you examine your tongue in a mirror, you w... (read more) Author: SM Bakhtiar

10. What makes us feel hungry June 18, 2013 What makes us feel hungry? The feeling of hunger is a message sent to your brain by your body. The message is that nutritive materials are missing from the blood. Let's see how this happens. Our bodies and those of all living things must maintain a state of metabolic equilibri­um. This means there has to be a certain balance and control over our intake of fuel and its use. To regulate our body weight we have thirst, hunger, and appetite. In the brain we have a hunger center. It acts like a brake on the activities of the stomach and intestines. When the blood has su... (read more) Author: SM Bakhtiar

11. Why do we have to eat June 18, 2013 Why do we have to eat? If we didn't eat, we couldn't keep our bodies alive, we couldn't grow, we wouldn't have energy, and various parts of our bodies couldn't function as they must. Modern scientists have been able to find out which sub­stances in food our bodies need, and how much of these substances we need to be healthy. In other words, it isn't enough to just eat; we must take in enough of each type of food substance for a specific purpose. Protein foods such as milk, eggs, cheese, meat and fish contain large quantities of the kind of material the body needs to build cell... (read more) Author: SM Bakhtiar

12. Are our teeth the same as animal teeth June 18, 2013 Are our teeth the same as animal teeth? When a scientist who has been digging for fossils or other remains of ancient life turns up with some teeth, he is very happy. Teeth are an important clue as to the kind of creature it was that lived there. For example, beasts of prey have tearing teeth, rodents have gnawing teeth, and cattle have grinding teeth. Every animal - whether horse, cow, mouse, cat, or dog - has teeth suit­able for its way of life, its food, and even its general nature. A beaver, for example, has great cutting teeth. The canine teeth of dogs and cats are sharp ... (read more) Author: SM Bakhtiar

13. What are our teeth made of June 18, 2013 What are our teeth made of? Do you brush your teeth at least twice a day? If you do, and you brush hard, have you ever wondered why you don't wear your teeth down? The fact is that our teeth are pretty tough - about as hard as rocks.Every tooth is made up of the same two parts: a root, or roots, to anchor it in the jaw­bone, and a crown, the part that can be seen in the mouth. Teeth are composed mostly of mineral salts, of which calcium and phosphorus are the most prominent. The enamel is hard and shiny, and covers the crown. The cementum is a bonelike material that covers the... (read more) Author: SM Bakhtiar

14. What is calcium June 18, 2013 What is calcium? The average body of a human being contains about three pounds of calcium. Most of this is found in the bones. Calcium is an essential part of the structure of the bone. We might, in fact, compare the structure of a bone to reinforced concrete. The bone has certain fibers called collagen fibers which are like the flexible iron wires often embedded in concrete. Calcium forms the bed in which these bone fibers are fixed. The calcium content of our bones changes as we grow older. Dur­ing the first year, a child's bones have little calcium and great fle... (read more) Author: SM Bakhtiar

15. What are our bones made of June 18, 2013 What are our bones made of? The strength of normal, healthy human bones is amazing. The saying that our bones are "twice as strong as oak" is not far from wrong. Bone needs to be strong because it forms the framework, or skele­ ton, that supports the whole body. Bones vary in shape and size according to the type of animal to which they belong. Fish and small birds have tiny bones. Elephants have bones that weigh several hundred pounds! All bones have similar composition. Bone is a hard, grayish-white substance, of which about two thirds are inorganic, or mineral ... (read more) Author: SM Bakhtiar

16. How do our joints work June 18, 2013 How do our joints work? If our bodies didn't have joints, it would be impossible for us to live as we do. We would have to lie absolutely still always, unable to move our heads, walk, raise our arms, or move a single finger! Our ability to move is possible because of the existence of joints. Wherever two bones glide over one another, a joint exists. A joint allows the bones to glide smoothly with very little friction. This is because the ends of the bones are covered by cartilage so that they don't really rub against each other. In addition, a whitish fluid which has the consi... (read more) Author: SM Bakhtiar

17. How do our muscles work June 18, 2013 How do our muscles work? In our bodies there are certain cells which make up connective tissue­tissue that joins the various parts of the body together. All the cells in connective tissue can contract, or tighten up. In some parts of the body, these cells can contract to a special de­gree, so they transform themselves into muscle cells. At those points in the body where muscle cells are used frequently, they multiply and join together to form a single smooth muscle com­posed of many fibers. Smooth muscles are found in many parts of the body and help many organs to function. Fo... (read more) Author: SM Bakhtiar

18. What is leprosy June 18, 2013 What is leprosy? Since ancient times, the disease we call leprosy has terrorized man. Aside from what it did to a person's body, a person with leprosy was forced to live away from other people. No one wanted to come near him or have him around; a leper had to spend the rest of his life alone. Today we know much more about leprosy and treat this disease differently. Leprosy is an infectious or contagious disease which affects the skin or the nerves, or both. The bacteria that cause the infection were discovered by a Norwegian named Hansen, so leprosy is also known as Hanse... (read more) Author: SM Bakhtiar

19. Why does alcohol cause drunkenness June 18, 2013 Why does alcohol cause drunkenness? Alcohol is present in our body at all times. After every meal we eat, the carbohydrates,starch and sugar, form alcohol and enter the bloodstream. So there is always about a gram of alcohol circulating in our body. But what happens if we take in additional alcohol? Alcohol is a narcotic, which is how we describe a substance which enters the nerve cells quickly and tends to paralyze them. But before any narcotic paralyzes, it stimulates nerve cells, putting them in a state of excitement. So alcohol first acts as a stimulant. And in order for ... (read more) Author: SM Bakhtiar

20. Why do we have two nervous systems June 18, 2013 Why do we have two nervous systems? The human nervous system is like a network of wires that lead from the brain, establishing contact with every portion of the body. The brain is the center of this system. From the brain, orders go forth over the nerve wires and make us move, laugh, eat, and otherwise behave like human beings. The nerves also serve the brain as messengers. Through a special part of the nervous system, the brain is informed of everything that happens to the body. The main line of communication connecting brain and body is the spinal cord. It is enclosed within... (read more) Author: SM Bakhtiar

21. What causes a reflex June 18, 2013 What causes a reflex? When you go to the doctor, does he ask you to cross your legs and then hit your knee with a small rubber hammer? What the doctor is testing is the reflex action. In this case, it is a special reflex called the patellar reflex, because the hammer struck a ligament called the patellar ligament. What actually happens when the hammer strikes the ligament? A stimulus passes from a sensory cell in the ligament to the spinal cord. There it is transferred to a motor cell, and this sends an action current to the muscles of the leg. The leg twitches, just a... (read more) Author: SM Bakhtiar

22. We are not afraid of accidents any more due to LED tunnel light June 18, 2013 I am very sorry to see traffic accidents, we all know that drunk driving and fatigue driving are two main reasons that induce accidents , drunk driving can be controlled, but we can not control fatigue driving,we can only try to eliminate the long driving to effectively prevent fatigue driving, but the long-distance bus drivers and train drivers have to long highly concentrated, which put forward higher requirements, do we have no better way to solve it fatigue driving? The answer is no, of course, why fatigue driving arises is because that we haven’t adequate rest, the facing emergency, ... (read more) Author: floodlights lsd

23. NIT-T To Hire 120 Assistant Professors June 18, 2013 The National Institute of Technology-Tiruchi (NIT-T) will recruit 120 assistant professors for its several undergraduate engineering departments. Currently, the institute has 245 faculty members against the total sanctioned staff strength of 393. The requirement for staff has surged following implementation of 27 per cent OBC reservation due to which student strength had gone up. The institute, , which is celebrating its Golden Jubilee this year, may also induct assistant professors with minimum of M Tech qualification on contract basis. The vacancies are more in civil engineering, mechanic... (read more) Author: ayan hood

24. Why do we popularize LED lighting especially in China June 18, 2013 Mainly in three aspects. 1.LED lighting promote the application in the city. If considering only 657 cities nationwide municipal lighting (not including about 2,000 counties and about 20,000 small town),there are 17,740,000 municipal road lights, the number of LED flood light and other landscape lighting is huge. Because China is in the urbanization high-speed development period,the urban population annual increase more than 10 million, the number of street lights will grow 120-150 ten thousand, and this process will continue for 25 years or even 30 years. If the city’s new street fill with L... (read more) Author: floodlights lsd

25. Unvergessliche Hochzeit June 17, 2013 Freund, Sie müssen ihre eigene HochzeitBRAUTKLEIDER zu organisieren, vielleicht haben Sie für die Kinder bei der Hochzeit, vielleicht haben Sie besucht Hochzeit eines Kollegen, vielleicht haben andere Menschen Hochzeiten gehört. Sie würden sagen, ja. Die heutige Hochzeit, dass die Dynamik, die Szene, dass Form, machen Sie überrascht und erstaunt, Autos können Flöße einen halben Kilometer, die Kamera-Rotation, Kamera "Klick, Klick"-Geräusch in den Ohren. In den Hochzeitssaal, ein Anblick, nicht dazu beitragen, dass Sie schreien: wow! Abzüglich 30 Tabellen; nicht! Mehr als 40 Tabellen. Setzen ... (read more) Author: Angela Lee

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