Silver Star

The D-glucose serves to reduce the silver from Ag1- to Ag1+. The sodium citrate first reduces Ag1+ to Ag, and then functions to bind with the particle surface of silver nitrate particles to allow them to interact. Finally, silver nitrate can aggregate. The silver nitrate combined with D-glucose, sodium citrate, and heat forms an aggregate. The citrate binds with the particle coating and dispels the repulsion between silver nitrate nanoparticles. The nanoparticles then form an aggregate-- a loose…

Social and Environmental Impacts of the Gold Commodity Chain Gold’s unique qualities make it one of the most sought-after commodities in the world. Even in antiquity, gold was praised for its luster, shine, and beauty and was cast into jewelry and was widely regarded as a luxury item. Its inherent scarcity gave gold value and it became a symbol of status and wealth because those who could afford to frivolously spend on jewelry were well-off. In some societies, it even became a currency, shaped…

Gold is widely used in modern day medicine to treat disorders. This is because gold is very resistant to bacteria. Bacteria are microscopic single-celled organisms. Bacteria are prokaryotes, meaning the entire organism consists of a single cell with a simple internal structure. The DNA of a prokaryote is neatly packed in the nucleus. The bacterial DNA floats freely in a twisted thread-like mass called the nucleoid. Gold is unaffected by almost everything. The only materials that can affect gold…

One of the earliest metals to be discovered, lead has a long history with mankind. It was first discovered around 7000 BC as a byproduct of silver smelting. Lead is metal known for its resistance against corrosion, malleability, and low melting point. Mined all across the world, lead was one of the most important metals in ancient times. Although lead was toxic, it was used widely, particularly in the Roman Empire. Through its uses and toxicity, lead affected the classical era in a drastic way.…

Blue People: Family of Troublesome Creek Martin Fugate and his wife Elizabeth Smith moved onto the bunks of Troublesome Creek, an area in Appalachian Kentucky. Martin and Elizabeth together had seven children. The family tried to hide out in the mountains because of the blood disorder that they carry with them. The blood disorder makes their skin turn blue. The blood disorder of how and why the family’s skin turns blue. Some facts about the blue people of Kentucky. The family has lived in the…

are any markings on the jewelry. This is important because many metals from silver-plated to sterling silver or palladium look the same to an untrained eye. Most of the time, jewelry will have markings…

Sterling silver jewelry has always been popular precious metal in all countries in ancient legends and throughout history. While silver is used in many products, their use as money and sterling silver jewelry are the source of its mystique and intrigue. There are many pieces of film on the basis of the sterling silver jewelry theft and looking for sterling silver jewelry lost items with magical properties. If you like sterling silver jewelry, you will probably feel the same way every time you…

Selection of Necklaces for all occasions Sterling silver necklaces are adaptable pieces that may be worn for special events and everyday use. For example, they flawlessly emphasize your ambiance for a particular, romantic candlelight supper, for office wear or for a particular family celebration. In addition they make a good gifting option, whether it be for weddings, Valentine’s Day or any other occasion. Sterling silver Necklace Benefits Equally as each folks are endowed with original…

The air turned black all around me. Something was going on. I was at the old destroyed science lab. Something was emitting radioactive surges. Then I remembered, five years ago a crazed scientist named ben destroyed half of the lab and overtook the other half to create a radioactive toilet weapon. Unfortunately, it out of hand and one day a big radioactive surge occurred while he was working on it and it killed him. But now the toilet was getting out of hand and it was starting to slowly destroy…

3.4. Friction Characteristics of the NCD, MCD and boron doped NCD Coatings against Alumina Balls The friction coefficient curves of NCD, MCD and boron-doped diamond films sliding with Al2O3 balls are shown in figure 4, figure 5 and figure 6, respectively, for a sliding speed of 8 m/s and a load of 1N, 5N and 10N, respectively. Figure 4 (a), figure 5 (a) and figure 6 (a) show the friction coefficient of NCD, MCD and BDNCD at 1 N, respectively. Figure 4 (b), figure 5 (b) and figure 6 (b) show…