Carbon cycle

initiated by stimulation of a chemoreceptor it is known as chemoreflex activation, an action which is important to this research. Chemoreflex can be activated by hypoxia, a deficiency in the amount of oxygen reaching the tissue and hypercapnia, excessive carbon dioxide in the bloodstream. Chemoreflex is a powerful stimulus that can “excite” the sympathetic nervous system, this excitement can then evoke “elevations in the muscle sympathetic nerve activity (MSNA)”. The interaction between…

practiced sustainable yield forestry. A major environmental problem associated with clear-cutting is increased carbon dioxide levels. Trees are a major carbon sink, meaning that they take in more carbon than they release. By cutting them down you are not only preventing from further carbon absorption, you are also releasing stored carbon back into the atmosphere. Not to mention the whole carbon cycle in the area will be off balance. Another, equally important environmental effect caused by…

up. Examples of adhesion include: water adhering to your skin or hair, bubble gum sticking to almost anything dry, and peanut butter getting stuck on the roof of your mouth. Adhesion plays an important role in the ecosystem, especially in the water cycle. When water falls to the surface…

care about as we do not see it every day, however, it is a danger to not only our way of life but human life in general. Ocean acidification refers to a reduction in the pH of the ocean over an extended period of time, caused primarily by uptake of carbon dioxide (CO2) from the atmosphere. Humans have caused this, mankind is not only disturbing the ocean…

Use of Carbon Compounds as Fuel: Carbon based fuels: What makes a good fuel? What are these fuels used for? Combustion effects good bad The main carbon based gases in use today are coal, gasoline and natural gas. Coal: The chemical formula of coal is C135H96O9NS. Nearly 85% of Coal is made up of Carbon and the rest is mainly hydrogen and oxygen. Coal doesn’t have a melting point. Like all fossil and biofuels, all different kinds of coal produce CO2 when burned. Coal energy quality varies…

Our lives and the lives of those before us, have been unknowingly (or knowingly) shaped by elements. In The Disappearing Spoon, the author Sam Kean, discusses the wonderful world of the periodic table in depth. Within the first nine chapters of the novel, Kean explains the importance of location on the table, origin and discovery of each element, and its impact on other aspects of human life. Through various tales, the table is pulled apart and analyzed in an ingenious way. To a reader, it is…

Esterification is a Nucleophilic Acyl Substitution Reaction wherein a carboxylic acid or a derivative of a carboxylic acid accepts a nucleophile which in turns substitutes for a leaving group. In esterification a leaving group connected to the carbonyl carbon is substituted by an alkoxide ion which forms the formula RCOOR’ which is an ester. For this particular experiment the esterification used was the Fischer esterification reaction which involves a carboxylic acid and an alcohol mixed in…

In the Acid-Catalyzed Hydration of norbornene, water and sulfuric acid were added to the C=C double bond to form norborneol. Sulfuric acid acted as a catalyst, where it was not consumed in the reaction and helped to propel the reaction forward, as it was vital in forming hydronium ion and breaking the double bond. Both the products endo-norborneol and exo-norborneol were synthesized; however regioselectivity and stereoselectivity played a role as to which product was more preferred and whether…

Beryllium General Characteristics According to Hornbostel (1991), Beryllium is a hard, exceptionally, lightweight, gray-white metal, corrosion resistant at ordinary temperatures; chemically it is related to aluminum. Other than titanium, it is the only light metal which has both good strength and a high melting point. Additionally, it is a good electrical conductor, has high modulus of elasticity, exceptionally transmit x-rays and sounds at very high velocities. Moreover, it has the ability to…

goal of the OMCVD process, to produce zero-valent state of metal element with existing technology and producing units is only possible for the Ni(CO)4. The processes which apply other precursors usually produce the thin film of metal polluted by the carbon or…