Friday, February 14, 2020

English Essay Example | Topics and Well Written Essays - 1000 words - 17

English - Essay Example In any war, the soldiers get paranoid; they are dispossessed of the sense of justice and morality, once they are part of the war. The solider will never be the same individual again.War is a terrible evil exercise for humanity. The victor is also a loser! Political leaders plan the war, but the soldiers fight it at the ground level. When one soldier is killed, the immediate family members suffer and the well-wishers go through an agonizing experience. The soldiers have no personal enmity and yet they are compelled to plan to eliminate each other. The only mantra for a soldier is, kill or get killed! Each day is a tough survival option for the soldier and no one at home is able to understand their predicaments. Tim illustrates a story of a soldier who brings his girlfriend to Vietnam. When she arrives, she is fresh and exuberant about the country that she is going to visit. But soon, the jungle life fascinates her; she loses attachment to her old city life. She disappears into the jungle. Tim explains this incident thus: "Tone? I didnt know it was all that complicated. The girl joined the zoo. One more animal--end of story." (O’Brien, p.107)Tim recalls a moment, how he killed a soldier who was walking down a trial. Tim threw a hand grenade at him and his face exploded†¦. He also narrates about the image of a young girl dancing outside her destroyed village, as American soldiers take the dead family away. ---One cries when one is sad; one doesn’t, when mad! Many such stories circulate. But, "Its safe to say that in a true war story nothing is ever absolutely tr ue." (O’Brien, p. 82) In Louise Erdrichs short story, "The Red Convertible," she communicates the emotional disturbances, war creates for a soldier and his relationships through symbolism of car between two brothers, Henry and Lyman. Their great attachment to the joint property, the symbol of their mutual affection during the pre-war days has vanished. Henry realizes that his

Saturday, February 1, 2020

Bacterial Cell Surface Tension Attachment and Implications for Article - 1

Bacterial Cell Surface Tension Attachment and Implications for Bioremediation - Article Example There was no significant relationship between the culturing of the bacteria with their attachment to the different material that was being tested. The environments under which the bacterial species were cultured had the significant influence on the level of attachment of different bacterial species to various surfaces. These results present essentially in seeking to establish the variance of species adherence to hexadecane. The attachment of microbial cells to solids and hydrophobic liquids is an important prerequisite in the degradation of chemicals that are recalcitrant because of extremely low solubility. Bacterial adsorption at interfaces is a physical and chemical process that, for the majority of micro-organisms, does not involve the expenditure of metabolic energy. The attachment process involves non-specific interactions between the cell surface, the solid or hydrophobic liquid and the bulk liquid phase(Abbasnezhad et al. 2011). Many factors influence bacterial attachment at solid/liquid and liquid/liquid interfaces. Environmental factors such as pH, temperature and the presence of cations, anions and organic molecules in the bulk liquid phase all directly affect the attachment process, as does the nature of the solid or the hydrophobic liquid(Mceldowney & Fletcher 1986). Microbial factors are equally important in determining the extent of bacterial attachment to surfaces, and the characterist ics of the cell surface have a considerable impact on attachment. Microbial cell surfaces are complex and consist of a variety of macromolecules, which vary with the microbial type. The macromolecular composition of bacterial cell surfaces, also, differs with growth substrate, growth phase, and growth rate. Such variations alter the charge and hydrophobic characteristics of bacterial surfaces (Rosenberg et al. 1980).  Ã‚