Nitrogen

Dangers of Underwater Exploration There are over fifty careers that have a sort of connection to underwater exploration. Many people explore for a living and others only for personal interest such as scuba diving. There have been many theories about objects getting lost in the ocean and many people go deep in the ocean to find them. For example, the lost land of Atlantis is said to have silver and gold (Drye). Based on Plato’s writings, philosophers say that as punishment to the…

million cars between 2009 and 2015 to make them appear less polluting than they actually are. Independent tests done by the International Council on Clean Transportation (ICCT) confirmed that a selection of VW vehicles were emitting up to 40 times more nitrogen oxides (NOx) in real-world driving than what was legally allowed. The revelation that the VW Group had installed software to falsify emission test results undermined the trust in the entire automobile industry. It resulted in stringent…

The Rising Nitrate Levels in the Floridian Aquifer The Floridian Aquifer is often referred to as the life blood of the state. With over 1,000 springs throughout Florida being fed freshwater from depths of up to 2,000 feet, no other aquifer in the United States can compare. Many of the aquifer fed springs, that once flowed millions of gallons of crystal clear 72-degree water, are now nothing more than algae filled mud holes. The aquifer is in peril, and one of the main contributors to the decline…

Title The Copper Reaction Cycle demonstrated in the experiment shows that copper can transform into different states of matter, while still conserving mass and returning back to its original room temperature solid state. Authors Makenzie Roybal * and Erin Wimberley Section CHEM 111-554 Introduction A topic of allure to many scientists is how high levels of copper intake can result in the disruption of human metabolism, and how it can degenerate the biological well being of ecosystems. The…

period. Farmers still left a third of their land lie uncultivated so that it would recharge its supply of nitrogen. Without a strong agricultural footing industrialization was impossible. In the latter half of the nineteenth century, the modern agricultural techniques came into common practice. Legumes were planted on land that once would have laid uncultivated as it replenished nitrogen more quickly. Legumes also created more food for cattle; thus more cattle could be kept. More cattle…

of an unknown, false negatives or false positives occur. While examining the results of the nitrate reduction test, a negative test was almost declared because of such a small amount of nitrogen gas trapped within the Durham tube. However as seen in the manual, E. coli partially reduces nitrate to a gaseous nitrogen, meaning the test was positive. Due to human error, what we almost concluded could have skewed the identification of the unknown. Luckily, the mistake was recognized early…

For the past two decades, more research efforts have been focused on the development of Advanced High Strength Steels (AHSS). The AHSS include Dual Phase (DP) steels, [1–10], High Strength Low Alloy steels (HSLA), Transformation Induced Plasticity (TRIP) steels, Twinning Induced Plasticity (TWIP) steels, and medium manganese steels, (Bouaziz et al., 2013). The majority of the research are focused on the development of third generation of steels due to interest in the mechanical properties of…

The agricultural/food industry has been in many argument about how animals and crops are being raised and killed to feed the american people. Michael Pollan uses his selection “An Animal’s Place” to defend his right to eat as he pleases. While, Blake Hurst uses his article “The Omnivore’s Delusion” to shield post-modern farming techniques from a mass of uneducated critics. Now, read as these two duke it out against their opponents to see if they can live as they want. Michael Pollan, a…

CaCO3: 0.02, FeSO4.7H2O: 0.01) in 100 ml flasks and autoclaved at 121° C, 15psi for 15 minutes. Effect of temperature, pH, carbon and nitrogen sources on protease activity The experiment was carried out at different temperature (27° C, 32° C, 37° C) and pH (4, 6 and 8). Different sources of carbon such as maltose, sucrose and glucose at 1.5 % (w/v) were used and nitrogen sources such as beef extract, peptone and yeast extract at 0.3 % (w/v) were used to determine their effect on the production…

complementary as well. This is because cytosine and thymine are pyrimidines (they have one ring)and adenine and guanine are purines (they have two rings). It is also because of the electronegativity of oxygen and nitrogen, as well as the partial positivity of hydrogen. The oxygen and nitrogens in guanine attract the hydrogens in cytosine, and vice versa, to create three hydrogen bonds. The same with adenine and thymine, except only two hydrogen bonds are created. The backbone of the ladder is…