Nas

the current flow through the copper electrodes increased as the electrolyte concentration increased, supporting the hypothesis, and corresponding to the research. This would have been because as the electrolyte concentration increased, the amount of Na+ ions and Cl- in the solution…

Native Americans were the first peoples to succumb to slavery by the Europeans. Due to the mining of gold and silver they seemed like the obvious choice. However, the Natives were not so easily taken into slavery and the diseases that were brought to them decreased their numbers drastically. Once the Natives proved to be a fruitless plan the Europeans looked to their own country for those less fortunate to use as slaves. British colonists became convinced that Africans best served their demand…

First of all, social media can be used for crimes. This is obvious because it states “Gangs use social media to recruit younger members, coordinate crimes, and threaten other gangs” (Socialnetworking.procon.org NA). Society today is way different than it was 20 years ago. Kids no longer have some of the problems many people faced back then. For example, adolescents stress over things like why their picture didn’t get any likes or running out of shows to watch on Netflix. Back then, technology…

That's a sticky, slimy substance made up mostly of the germs that cause tooth decay. The bacteria in your mouth make acids and when plaque clings to your teeth, the acids can eat away at the outermost layer of the tooth, called the enamel (say: ih-NA-mul). If you don't go to the dentist, the acids can continue to make their way through the enamel, and the…

My favorite book is ''Portas Abertas: Três meses na Europa sem um centavo no bolso''. It's about a woman that traveled for 92 days in Europe and visited 14 countries without money. Aline Campbell is a Brazilian plastic artist woman that decided to live a unique experience just believing in the goodness of strangers. She traveled for three months where she took rides and stayed in the house of strangers, she just bought the airline tickets and flew to Germany to start this adventure. She tell…

contraction occurs in a series of steps, and they are as follows: First, a motor neuron must have acetylcholine released in the synaptic cleft. The acetylcholine is then able to bind with receptors found in the cell membrane. This binding causes the Ca+/Na+ channels to open. The terminal cisternae then releases calcium into the muscle fiber. Calcium will begin to bind to troponin. The troponin moves tropomyosin out of the way since it blocks the actin’s active site. Next, actin uses…

Hydrogen Carbonate (NaHCO3) and Citric acid on the other hand react together in the aqueous solution to form sodium citrate. The sodium citrate produced is able to neutralise the HCl produced in the stomach by exchanging the H+ in the solution with the Na+ forming citric acid, which is a weaker acid than hydrochloric acid. There is also an excess amount of Sodium Bicarbonate present with solution and the bicarbonate ions act as the main buffering agents neutralising any acid or alkali added…

elements such as H, C, N, O ,Ca ,P, Na, Mg, S, CI ,K ,Fe and I in their elemental composition. We have studied the variation of mass attenuation and energy absorption coefficients with atomic number at different energies for the elements which are constitutes of tissues of human organs. It has been proposed the empirical relations for mass attenuation and energy absorption coefficients interms of atomic number and energy for the elements such as H, C, N, O ,Ca ,P, Na, Mg, S, CI ,K ,Fe and I.…

one venom. Each cone venom appears to have its own distinctive signature of conotoxin sequences. These peptides are now standard research tools in neuroscience. The µ-conotoxins, because of their ability to preferentially block muscle but not axonal Na+ channels, are convenient tools for immobilizing skeletal muscle without affecting axonal or synaptic events. The ա-conotoxins have become standard pharmacological reagents for investigating voltage-sensitive Ca2+ channels and are used to block…

Drug addictions is one of the most destructible things a person can do to themselves. Illicit drugs are becoming more popular on the streets and are taking more lives every single day. One very popular drug on the street is heroin. Many people who used heroin started off using marijuana or prescription drugs and switched for a stronger drug. They are unaware of the health risks of this dangerous drug. Heroin is a drug made from poppy plants and is a thick powder. It is highly addictive and…