Tswett developed this process to separate the pigments in green leaves. He dissolved the leaf extract in an organic solvent and let the solution run down through a vertical glass tube with chalk powder. A variety of pigments flowed through the column at different rates‚ while a series of bands appeared on the white chalk column Several chromatographic techniques are being used today such as gas chromatography
Free Chromatography Thin layer chromatography
Is bullet proof clothing helpful and should it be made? Over the years the world has used bullet proof clothing to protect many people. It’s mainly used in military and police regimes. Bulletproof vests are mainly used on a daily basis by these forces. These vest are a type of modern light armor specifically designed to protect vital organs from gunfire. Some vest are specifically made to defend from knives. These are called ballistic vest‚ which specify in protection from stabbings with knives.
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The Nefertiti Bust is a 3‚300-year-old painted limestone bust of Nefertiti‚ the Great Royal Wife of the Egyptian Pharaoh Akhenaten‚ and one of the most copied works of ancient Egypt. Owing to the work‚ Nefertiti has become one of the most famous women of the ancient world‚ and an icon of feminine beauty. The work is believed to have been crafted in 1345 BC by the sculptor Thutmose. A German archaeological team led by Ludwig Borchardt discovered the Nefertiti bust in 1912 in Thutmose’s workshop in
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The Beauty of Cosmetology Have you ever thought about being a cosmetologist? A person who is called a cosmetologist or beautician. Cosmetology is a professional skill and practice of beautifying the face‚ hair‚ and body. Cutting‚ coloring‚ shampooing‚ hair styling are some of the things a cosmetologist specialize in. Cosmetology is a rewarding career that requires training and dedication. Cosmetology started back in Ancient Egypt. The Egyptians were the first to show beauty in an high fashion.
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José Parlá José Parlá is a modern contemporary artist born in 1973 Miami‚ Florida. Parlá began painting in 1983 and by 1988 he was accepted into the Savannah College of Art and Design’s scholarship program. He used this experience to extend his art making by combining concepts he already knew as a self taught artist and concepts he learnt from the Savannah College. Parlá’s works are huge canvases (usually 4x6ft) painted in a way that makes you wonder what it is that lurks under all the layers
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“Finding someone you love and who loves you back is a wonderful‚ wonderful feeling. But finding a true soul mate is an even better feeling. A soul mate is someone who understands you like no other‚ loves you like no other‚ will be there for you forever‚ no matter what. They say that nothing lasts forever‚ but I am a firm believer in the fact that for some‚ love lives on even after we’re gone.” This quotation comes from book “PS I love you”‚ written by Cecelia Ahern‚ and perfectly describes the
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sit and discuss the situation and make them work for the fruits they seek rather than offering them in a plate. G3 seeking a JOB in the COMPANY: A generation 3 seeking a job augurs well for the company. Tom and Carol should encourage the boy and chalk out a progression plan for him. It is important for him to gain business experience. Tom and carol should set goals for the kid and encourage him to succeed in the family
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presents Drawing faces Learn How to Draw a Face with Attitude‚ How to Draw Eyes with Impact and How to Draw Lips with Structure Drawing faces Depicting features is only the beginning. putting life into a heaD Drawing requires assimilating it with the rest of the boDy‚ capturing an attituDe—anD much more. How to Draw Dynamic HeaDs here are many ways to keep your figure drawings lively‚ fresh‚ and dynamic. But there is one sure way to destroy an active and energetic drawing: by plopping
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intrusive rocks harden slowly beneath the surface of the earth‚ and often form large mineral crystals within the rock. Granite is a good example of an intrusive rock.Porphyritic intrusive rocks have large crystals embedded in a matrix of smaller crystals. Pegmatite is the only porphyritic rock on the Science Olympiad list.Extrusive rocks harden quickly during a volcanic eruption and are usually smooth-grained. Basalt is the most common form of extrusive rock. |IgneousName |Classification|Description
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Dear farmer Stan: I am so happy to hear you are taking on such a fantastic task and would be thrilled to help and inform you of the proper specifications to introduce artificial insemination into your farm. Such important requirements to have a successful outcome would be‚ herd identification‚ nutrition‚ heat detection‚ sire selection‚ proper facilities‚ A.I. equipment‚ semen storage and insemination procedures. Also‚ I will go into detail on the female reproductive system to help you better
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