Saturday, May 7, 2011
Vitamin D
1:17 PM
Ankur Dubey
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Vitamin - D
Functions of Vitamin D
Requlates absorption of calcium and phosphorus from the intestinal tract. Affords antiachitic activity.
Deficiency - Effects
Interferes with utilisation of calcium and phosphorus in bone and teeth formation. Development of bone disease, rickets and caries.
Sources
Butter, Milk, Ghee, Cod liver oil, Yolk of Eggs and also in Sunrays.
Functions of Vitamin D
Requlates absorption of calcium and phosphorus from the intestinal tract. Affords antiachitic activity.
Deficiency - Effects
Interferes with utilisation of calcium and phosphorus in bone and teeth formation. Development of bone disease, rickets and caries.
Sources
Butter, Milk, Ghee, Cod liver oil, Yolk of Eggs and also in Sunrays.
Vitamin C
1:15 PM
Ankur Dubey
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Vitamin - C
Functions of Vitamin C
Needed for form the cementing substance, collagen, in various tissues. Assists in woundhealing and bone fractures.
Deficiency - Effects
Lowered resistance to infections.Susceptibility to dental cavities, pyotthea and bleeding gums. Delayed wound healing. Specific treatment for Scurvy.
Sources
Fresh vegetables, Lemon, Orange, Tomatoes, Cabbage , Turnip and Lettuce (Beetroot).
Functions of Vitamin C
Needed for form the cementing substance, collagen, in various tissues. Assists in woundhealing and bone fractures.
Deficiency - Effects
Lowered resistance to infections.Susceptibility to dental cavities, pyotthea and bleeding gums. Delayed wound healing. Specific treatment for Scurvy.
Sources
Fresh vegetables, Lemon, Orange, Tomatoes, Cabbage , Turnip and Lettuce (Beetroot).
Vitamin B
1:14 PM
Ankur Dubey
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Vitamin - B2
Vitamin - B2
Functions of Vitamin B2
Needed in formation of certain enzymes and in cellular oxidation. Prevents inflammation of oral mucous membranes and the tongue.
Deficiency - Effects
Impaired growth, lassitude and weakness. Causes cheillosis or glossittis. May result in Photophobia and cataracts.
Sources
Peas, Beans and Cereals.
Vitamin - B2
Functions of Vitamin B2
Needed in formation of certain enzymes and in cellular oxidation. Prevents inflammation of oral mucous membranes and the tongue.
Deficiency - Effects
Impaired growth, lassitude and weakness. Causes cheillosis or glossittis. May result in Photophobia and cataracts.
Sources
Peas, Beans and Cereals.
Vitamin - A
1:12 PM
Ankur Dubey
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Vitamin - A
Functions of Vitamin A
Essential for normal growth and development. For normal function of epithelical cells and normal development of teeth and bones.Prevent Night Blendness.
Deficiency - Effects
Retarded growth.Reduced resistance to infection. Abnormal function of gastrointestinal, and respiratory tracts due to altered epithelial membranes. Interferes with production of "night purple"
Sources
Milk, Egg yolk, Ghee, Butter, Carrots, Tomatoes, Leafy and Yellow vegetables, Cod liver oil and Fresh fruits. Peas, Beans and Cereals.
Functions of Vitamin A
Essential for normal growth and development. For normal function of epithelical cells and normal development of teeth and bones.Prevent Night Blendness.
Deficiency - Effects
Retarded growth.Reduced resistance to infection. Abnormal function of gastrointestinal, and respiratory tracts due to altered epithelial membranes. Interferes with production of "night purple"
Sources
Milk, Egg yolk, Ghee, Butter, Carrots, Tomatoes, Leafy and Yellow vegetables, Cod liver oil and Fresh fruits. Peas, Beans and Cereals.
Important National Days of India
1:04 PM
Ankur Dubey
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Date | Important Day |
Janurary 12 | National Youth Day ( Birth Anniversary of Swami Vivekananda) |
Janurary 15 | Army Day |
Janurary 23 | Netaji S.C. Bose's Birth Anniversary |
Janurary 26 | Republic Day |
Janurary 30 | Martyr's Day ( Gandhi's Death Anniversary) |
February 24 | Central Excise day |
February 28 | National Science Day |
May 21 | Antiterrorism Day (Rajiv Gandhi Death) |
August 15 | Independence Day |
August 29 | National Sports Day |
September 5 | Teachers' Day; Sanskrit Day |
October 2 | Gandhi Jayanti |
October 8 | Indian Air Force Day |
November 14 | Children's Day |
December 4 | Navy Day |
December 23 | Kisan Divas (Framers's Day) |
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Important Days
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Tuesday, May 3, 2011
Barcodes
2:13 PM
Ankur Dubey
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Barcodes
When you checkout from a supermarket, the person at the counter checks all that you have bought by flashing a small light at a set of lines marked somewhere on every item. How does this system of checking work?
A barcode is machine-readable information. It allows data to be collected accurately and rapidly about the product such as what product it is, the country where it was manufactured, prices, stocks left and so on.
A Barcode symbol consists of a series of parallel bars and spaces. Each of these wide and narrow bars and spaces in the pattern represents a character which in turn represents some kind of a code. Such as, numbers 00-13 is the country code for USA and Canada, 45 for Japan and 890 for India.
How is the barcode read?
A barcode reader uses a scanning device which is basically a photo sensor. It measures the relative widths of the bars and spaces, translates the different patterns back into regular characters, and sends them on to a computer or portable terminal. Here the original data is recovered. A bar code works like a light when turned on in a dark room. You see the walls and furniture in the room by the light reflected from these items.
The scanning device contains a small sensory reading element. This sensor detects the light being reflected back from the bar code, and converts the light energy into electrical energy. The result is an electrical signal that can be converted into data. Scanners employ various technologies to “read” codes. The two most common are lasers and cameras. Scanners may be fixed position type or hand-held devices.
History of Barcodes
In 1948, a local food shop owner Philadelphia (Pennsylvania) requested Bernard Silver, a research student to devise a method of automatically reading product information during checkout. Bernard Silver joined together with fellow research student Joseph Woodland to work on a solution. After four years of hard work, Woodland and Silver developed a method of “article classification through the medium of identifying patterns” and got it patented on the 7 October 1952.
Thus began the system of barcodes. The first product to have a bar code was Wrigley’s Gum. Bar codes were first used commercially in 1966, but it was soon realized that there would have to be a common standard all over the world to derive maximum benefit.
The Universal Product Code (UPC) was the first bar code symbology to be widely adopted. This was on 3 April 1973. Foreign interest in UPC led to the adoption of the EAN (European Article Numbering) code format, similar to UPC, in December 1976.
Currently, the United States and Canada use UPC bar codes as their standard for retail labeling, whereas the rest of the world uses EAN. Numerous other methods of bar-coding have evolved ever since. Originally barcodes were, stored data in the widths and spacing of printed parallel lines, but nowadays they also come in patterns of dots, concentric circles, and hidden in images. Also today we have numeric-only barcodes, alphanumeric barcodes and 2-Dimensional barcodes.
An Example
Consider a barcode found on a loaf of bread which contains a 12-digit product number. When this number is scanned by the cashier, it’s transmitted to the store’s computer which finds the record associated with that item number in its database. The matching item record contains a description of the product, vendor name, price, quantity-on-hand, etc. The computer instantly does a “price lookup” and displays the price on the cash register (it also subtracts the quantity purchased from the quantity-on-hand.) This entire transaction is done instantly; think of how long it would take the cashier to key in a 12-digit number for every item you wanted to buy!
Barcodes are thus a time saving, cost effective and accurate means of handling and checking large numbers of consumer goods.
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Amazing facts
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facts
Apes And Human
2:10 PM
Ankur Dubey
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The Relationship between Apes and Humans
Since scientists developed the ability to decode the genome and compare the genetic makeup of species, some people have been stunned to learn that about 98.5% of the genes in people and chimpanzees are identical. This finding means chimps are the closest living biological relatives to humans, but it does not mean that humans evolved from chimps. What it does indicate is that humans share a common ancestor with modern African apes (i.e., gorillas and chimpanzees), making us very, very distant cousins. We are therefore related to these other living primates, but we did not descend from them.
Modern humans differ from apes in many significant ways. Human brains are larger and more complex; people have elaborate forms of communication and culture; and people habitually walk upright, can manipulate very small objects, and can speak.
Amazing Language Facts
2:08 PM
Ankur Dubey
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- Amazing Language Facts
There are more than 2,700 languages in the world. In addition, there are more than 7,000 dialects.
A dialect is a regional variety of a language that has a different pronunciation, vocabulary, or meaning.
A dialect is a regional variety of a language that has a different pronunciation, vocabulary, or meaning.
The most difficult language to learn is Basque, which is spoken in northwestern Spain and southwestern France. It is not related to any other language in the world. It has an extremely complicated word structure and vocabulary.
All pilots on international flights identify themselves in English.
Somalia is the only African country in which the entire population speaks the same language, Somali.
The language in which a government conducts business is the official language of that country.
More than 1,000 different languages are spoken on the continent of Africa.
Many languages in Africa include a â€Å“click†sound that is pronounced at the same time as other sounds. You must learn these languages in childhood to do it properly.
Many languages in Africa include a â€Å“click†sound that is pronounced at the same time as other sounds. You must learn these languages in childhood to do it properly.
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Amazing facts
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facts
All About Lotus
2:07 PM
Ankur Dubey
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All about Lotus
A symbol of purity, fertility, eternity and the divine seat of the goddess Lakshmi, the lotus is also the National Flower of India. Here’s why this flower is so pure.
In India, the lotus is considered as a sacred flower and a lot of folklore and religious mythology is woven around it. It is also the national flower of India.
Religious and social symbolism
The lotus stands tall, clean and beautiful despite its murky surroundings. Rich in meaning and metaphor; it is considered as the foremost symbol of purity, beauty, wealth and fertility. It is also symbolic of youth and feminine beauty.
Laxmi, the goddess of wealth, and several other deities, sit on huge lotus flowers. Many gods and goddesses are also depicted holding a lotus in one of their (many) hands!
Hinduism adjures human beings to be like the lotus–to maintain the purity of the mind and body while floating on the muddy waters of sins and desires.
The seeds of the lotus have been found to be viable for germination even after thousands of years. Hence it is a symbol of a strong vital force that can withstand extremely adverse conditions.
Buddhism also attaches a lot of importance to the lotus.
The popular ‘padmasana’ in yoga means the ‘lotus position’.
Science
Moving to science, the botanical name of the lotus is Nilumbo Nucifera. Here, it is just another flower. But its peculiar properties have awed scientists. Research shows that the lotus is indeed pure -even from the scientific point of view.
You must have seen those large round lotus leaves. If you can get one them, try splashing lots of water on them. You will find that all the water rolls off the leaf. Then, if you touch the leaf it will still be dry. What is it that makes it water repellent?
Scientific research shows that the leaves of all aquatic plants secrete wax crystals. Thus the leaves are in a sense, coated with a layer of wax which repels water. This prevents the leaves from getting drenched in the water around them. Interestingly, these wax crystals also help the leaves to retain the required amount of water within them.
Further studies by scientists have led to the discovery of something more interesting. It has been called the “lotus effect”. According to this, the lotus has an amazing ability to clean itself. It can easily wash off any dirt or microorganisms such as bacteria that try to settle on it.
To understand how they do it, we must take a deeper look into the structure of the lotus leaves. Contrary to popular belief, lotus leaves are not smooth. When the leaf cells are examined under a powerful microscope, they are seen to have a bumpy surface. This means that the surface of the leaf is actually rough. These rough surfaces were found to be spotlessly clean. They did not require to be cleaned even for viewing under the microscope.
Where does the dirt go?
The dirt particles form its surroundings lodge themselves on the tip of the wax crystals on the leaf. Also, because of the roughness they cannot hold on very tightly to the surface.
Next, when water comes in contact with the surface, it forms droplets which slide off immediately. Since the dirt particles rest loosely on the miniature bumps, they stick more strongly to the water droplets than to the leaf surfaces. Therefore the water droplets carry away the dirt particles as they run off. In this way they the lotus manages to wash itself without any effort.
Had the surface been smooth, the dirt particles would have been pushed from one part of the leaf to the other. Also on a flat surface they would find a greater contact area and hence would rest more firmly.
Even if a few of the microorganisms remain on the leaf, they do not get water for survival and eventually die. Thus the lotus is able to purify itself.