African Americans in Pop Culture Essay Example for Free

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Bio Cement Essay Example for Free

Bio Cement Essay The project aims at attaining high durability of concrete and gaining high strength of cement. We plan to make use of bacterial species which can hydrolyze the enzyme Urease efficiently to produce microbial concrete. Such bacterial are known to produce calcium which is useful in giving strength to cement. We are working in 2 stages. Stage 1: Here we check the effect of bacterial solution on cement mortar and along with that we check the effectiveness of the bacterial solution to fill the cracks in concrete by precipitation of calcium in the cracks. Stage 2: To prepare concrete using the cement and solution (bacterial) in optimum ratio and checking its effectiveness from strength and durability perspective. Till now Stage 1 is partially over: We have made use of this bacterial solution(Emulsion: Bacillus culture+ nutrient broth+ sucrose+ urea+ calcium chloride+ antifungal agent(griseofulvin)to heal the existing cracks in the concrete walls. For achieving high 7 days we have made use of bacterial solution in some fixed proportion with water. The 7 days test was performed on 7/12/11 with 5%, 10%, and 15% of the bacterial solution with respective percentage of water. We have gained a significant percentage increase in the strength of the cubes made with bacterial solution with water versus those made with only water Bacteria at work Microbially induced calcite precipitation (MICP) Microbially induced calcite precipitation (MICP) is known to be a natural phenomenon associated with a wide range of bacterial species such as Bacillus spp. provided the right conditions, namely, an alkaline environment rich in Ca2+ ions. Bacterially induced mineralization has recently emerged as a method for protecting and consolidating decayed construct materials. Calcite (CaCO3) is one of the most common and widespread minerals on the earth, constituting 4% by weight of the earth’s crust. Calcite precipitation is a common phenomenon which forms natural rock and exists in environments such as marine water, fresh water, and soils. Microbial calcite precipitation can be induced by organisms involved in the nitrogen cycle, via the hydrolysis of urea by enzyme urease, which results in the production of carbonate ions in the presence of ammonium. Calcium carbonate is readily precipitated under these conditions, in the presence of calcium. Microbial calcite precipitation comprises a series of complex biochemical reactions. During microbial urease activity, 1 mol of urea is hydrolyzed intracellularly to 1 mol of ammonia and 1 mol of carbonate, which spontaneously hydrolyzes to form additional 1 mol of ammonia and carbonic acid. Subsequently, these products equilibrate in water to form bicarbonate, 1 mol of ammonium and hydroxide ions which give rise to a pH increase and ions Ca2+ and CO32- present in the surrounding precipitate as CaCO3. Urea hydrolysis is the most easily controlled of the carbonate generating reactions, with the potential to produce high concentrations of carbonate within a short time. Bacillus spp. was used in this study. The culture was grown in Nutrient broth-urea (NBU) medium containing peptone, sodium chloride, yeast extract, 2% urea and 25mM calcium chloride and incubated at room temperature on shaker condition (130 rpm). Calcium chloride acts as the source of calcium ions and urea as the source of carbonate ions. Observations * There is a rise in the compressive strength of the mortar cubes till 5 % bacterial solution. * The strength is reduced when the proportion of bacterial solution is increased up to 10 % and beyond. * The cubes with 15% bacterial solution shows 8 % decrease in strength. * The 1%, 2%, 3% cubes developed less cracks in comparison to control cubes. * The cubes when observed after testing , the control cubes had more number of empty pores. Conclusion * 3% cubes showed an increase in compressive strength of 36 % in comparison to control cubes. * Reduction in empty pore space.(which prevent the ingress of water and other chemicals ) * Bacteria does not have any physical effect on the cement. * Chemically inert. * Bacterial solution can be prepared on a large scale . * No skilled labour is required. * Its production is economical. References * Microbial activity on the microstructure of bacteria modified mortar by S.Ghosh, M.Biswas, B.D. Chattopadhyay, S.Mandal. * Effect of calcifying bacteria on permeation properties of concrete structures by Dr. Varenyam Achal. * Work on BacillaFilla by New Castle University.

The Whistleblower: Julian Assange

The Whistleblower: Julian Assange Julian Assange is one of the most famous whistleblowers since 2006. Assange is an Australian citizen and the leader of a group that attacks the secret documents of governments by leaking them. In fact, he managed to leak confidential information and data about global financial transactions between different countries and organizations as well as secret operations regarding military and policies. He also founded WikiLeaks as a website where whistleblowers and hackers could have the ability to put stolen information about organizations without having to mention their real identities. The website as well as Assange started to gain fame in most of the houses all over the world since Chelsea Manning contributed in the leakage of data about the American army. Furthermore, hackers were able to put on WikiLeaks a video about shooting Iraqi citizens, who were not armed, by helicopters that belonged to the United States. This video was named Collateral Murder. Since then, the name of Julian wa s mentioned in many fields including poisonous wastes thrown near Cote dIvoire along with operations and procedures regarding detention in Guantanamo Bay. Christodoulou, holly. (2017, February 8). In 2010, whistleblowers on WikiLeaks were able to release more than two thousand documents regarding diplomatic cables. They managed to get these documents from a source without an identity. In addition, these documents were leaked and released after the spread of Collateral Murder video and the documents related to Iraqi and Afghani Wars in 2010. Both documents exceeded more than four thousand documents. It is said that the leakage of such information and data came from a source that belonged to Bradley Manning. As a matter of fact, Manning is an analyst who used to work in the American Army Intelligence. However, he was imprisoned later. A lot of people ask about whether WikiLeaks was able to release confidential documents before or not. In fact, the answer for such question is yes.   In order to succeed in leaking all these amounts of information, WikiLeaks has passed through three stages directly after being created. It is worth mentioning that the first stage involved the rele ase of documents regarding Kenya about eight years ago. During this period, the responsible persons of the website and its management worked according to a wiki model. This model provided readers and loggers with the ability to put information on the website no matter what this information is or these documents are. On the contrary, the website had the authority to determine the kind of documents and whether to accept them or not. The second stage, through which WikiLeaks moved, included the release of Collateral Murder seven years ago. As a matter of fact, a lot of political organization took that video really seriously since it was considered as a political declaration of the brutality of the United States policies. This video was released in order to show and clarify a certain opinion, not in order to inform public about such point of view. Finally, the third stage included the release of diplomatic documents and labels. This stage is happening right now. WikiLeaks managed to hav e connections and strong relationships with organizations in the field of media and news to be able to collect, analyze and publish political documents through using organized ways instead of throwing such diplomatic cables on the internet or implementing them as a source to show a certain opinion. Zittrain, J. (2010). While Julian and other whistleblowers believe that people all over the world are in deep need of WikiLeaks, the governmental authorities and organizations think the opposite. In fact, Assange thinks that these leakages of documents force the governments to be more open and not to hide any secrets. In addition, they encourage those political organizations to respect the public and their privacy along with showing that they are clear and honest. It has to be taken into consideration the fact that WikiLeaks was an anonymous unknown website unless it succeeded in the release of videos like Collateral Murder and Baghdad Airstrike videos. Unfortunately, Baghdad video was released by the website seven years ago and talked about the murder of two reporters, who used to work in Reuters, by American military forces. On the other side, the case is different for the United States. Officials in the American government had the desire to accuse Assange of betrayal and espionage since he has release d private confidential diplomatic cables regarding Pentagon. Actually, the American government believed in the idea that these documents have resulted in the destruction of its national security and foreign affairs with other powerful countries. The WikiLeaks impact the American business journal. (2016). As for how the United States responded to these leakages, it resorted to the policy of power in order to force WikiLeaks and Assange to return back the hacked documents just after the release of diplomatic cables regarding the Afghani War. Moreover, it started along with the British government to condemn these actions because they thought they could lead to the destruction of peoples lives and their privacy. Moreover, a lot of authorities thought these documents to be very sensitive since it touched a lot of top secret political problems and situations. Universities also in the United States have warned their students not to enter WikiLeaks, read any document or put any data in order not to expose their lives to danger. Finally, it is worth mentioning that governments must be very careful while dealing with confidential documents and secure them well so that they could be able to avoid any kind of hacking or any whistleblower who might think of leaking them. Karhula, P. (2012). References: Karhula, P. (2012). What is the effect of WikiLeaks for freedom of information? Retrieved February 15, 2017, from IFLA, http://www.ifla.org/publications/what-is-the-effect-of-wikileaks-for-freedom-of-information The WikiLeaks impact the American business journal. (2016). Retrieved February 15, 2017, from The American Business Journal, http://www.abjusa.com/features/features_apr_may_11/the_wikileaks_impact_don_t_shoot_the_messenger.html Zittrain, J. (2010). Everything you need to know about Wikileaks. Retrieved February 15, 2017, from https://www.technologyreview.com/s/421949/everything-you-need-to-know-about-wikileaks/ Christodoulou, holly. (2017, February 8). Who is Julian Assange and why is the WikiLeaks founder wanted by Sweden? Retrieved February 15, 2017, from THE SUN, https://www.thesun.co.uk/news/2188164/who-is-julian-assange/

Summary of William Shakespeares Romeo and Juliet :: Romeo and Juliet Essays

Summary of William Shakespeare's Romeo and Juliet Paris asks Capulet for his daughter Juliet's hand in marriage. Capulet replies that she is still too young to be married, but nevertheless invites Paris to try to woo her at a banquet he is holding that night. He gives a servant a list of guests and tells him to take an invitation to each of them. The servant is illiterate, and so goes about trying to find someone to read the list for him. He runs into Romeo and Benvolio, who are still discussing Romeo's unrequited love. The servant gets Romeo to read the guest list for him, and then tells him about the banquet. Benvolio convinces Romeo to go along with him to the banquet to compare the other beautiful women there with the one he is pining for: Rosaline, a niece of Capulet. Act I, Scene iii Lady Capulet, Juliet, and the Nurse talk about the possibility of Juliet being married to Paris. Lady Capulet encourages Juliet to consider him as a potential husband when she sees him at the banquet. The Nurse is completely taken with the idea, but Juliet is not especially enthusiastic. Commentary These two scenes introduce Paris as Capulet's pick for Juliet's husband and, more broadly, establish the theme of parental influence over a child's happiness. In the last scene, it was shown how the hatred Capulet and Montague bear for each other flows down to affect the rest of their households and results in violent conflict, but here the influence is more subtle and mundane. Paris is a nobleman and a worthy choice to be Juliet's husband; there is no reason why she should not want to marry him. Capulet himself defers to her ability to choose for herself ("My will to her consent is but a part"), but his power to force her into a marriage if he feels it necessary is implicitly present. It is significant that Paris speaks to Juliet's father before he ever shows her any indication of his feelings, and apparently before he even gets to know her particularly well. Lady Capulet, for her part, offers her entire support to her husband's plan for their daughter, and begins to put pressure on Juliet to think about Paris as a husband before Juliet begins to think about marriage at all on her own. Juliet even says to Lady Capulet in scene 3 how important her influence is to her in this matter: "I'll look to like, looking liking move; / But no more deep will I endart mine eye / Than your consent gives strength to make it fly.

An Analysis of Frosts Poem Once by the Pacific :: Once by the Pacific Essays

An Analysis of Frost's Poem Once by the Pacific Although "Once by the Pacific" is not one of Frost's most commercial poems, that does not mean that it is not one of his best. It appears quite obvious to me by one read through of the poem that it has an apocalyptic theme to it. Frost uses the first four lines of the poem to give us a mental image of how powerful the ocean water is: The shattered water made a misty din. Great waves looked over others coming in, And thought of doing something to the shore That water never did to land before. We imagine water crashing down upon the shore line wave upon wave, getting bigger and bigger as they continue. Frost personifies the water in line 3 by giving us the idea that the water has an actual mind and can do as it wishes. That we are at the mercy of the ocean as it stands there in its threatening tone and demands respect from us. I think that line 4 is ironic because if we look at biblical history, water has covered the entire earth before (Genesis 7:17-24). Yet Frost approaches this as if it is a new idea, perhaps because we have a hard time comprehending such an unimaginable occurrence as the Great Flood. The next 3 lines use the image of the clouds in the sky concealing what is to come: The clouds were low and hairy in the skies, Like locks blown forward in the gleam of eyes. You could not tell and yet it looked as if .

Magical Realism and Mans Search for Meaning :: Literature Essays Literary Criticism

Magical Realism and Man's Search for Meaning Five Works Cited Real life experiences that happen in a person's life are important, and these are what magical realism is all about. The meaning of life is wrapped all into our way of living. The world is full of passion and magic and without this passion and magic the world would not exist. Victor Frankl, a 2oth century psychiatrist, had this passion as well as a lot of other people who have survived many obstacles in their lives. Magic is the marvelous in reality. Everyday living is magic alone, trying to survive the rat race of today's society, yet the marvelous is there, too. Simpkins spoke of the marvelous, fantastic, and other things pertaining to magical realism (146). Simpkins states that magical realism appears to overcome the "limits" of realism (145). Leal also has given his opinion of the magic and the passion of magical realism. Leal spoke of the emotions that magical realism has. He states that magical realism is unreal and fantasy like fairy tales or made up stories (119). Leal states that the job of magical realism is to express the emotions not evoke them (121). A writer must confront reality and try to untangle it (121). In magical realism, key events have no logic or explanation (123). Frankl, in his book Man's Search for Meaning, addresses some of the same issues that are associated with magical realism. Frankl's will to meaning is used in distinguishing several forms of neurosis and traces some of them to the failure of the sufferer to find meaning and sense of responsibility in his existence. Freud stresses frustration in the sexual life, and Frankl stresses frustration in the will-to-meaning (9). Frankl refers to the strategies to preserve the remnants of one's life though the chances of surviving are slight. Hunger, humiliation, fear, and deep anger at injustice are rendered tolerable by closely guarded images of beloved persons, by religion, by a grim sense of humor, and even by glimpses of the healing beauties of nature-a tree or a sunset (10). Frankl noticed that people who survived the horrors of the nazi concentration camps had purpose. The reasons for their survival is Frankle's will to meaning. Comparing Like Water for Chocolate Frankl's Man's search for Meaning gives a great discussion of the magical in reality. Both stories had passion in the people's lives, enough to make the magical realism show.

Movie Review †The Help Essay

â€Å"The Help† based on a best-selling novel by Kathryn Stockett, a story of three women who take extraordinary risk in writing a novel based on the stories from the view of black maids and nannies. Set in Jackson, Mississippi in the early 1960s, a young girl sets out to change the town. Skeeter, who is 21 years old, white, educated from Ole Miss, dreams of becoming a journalist. She returns home to find the family maid, Constantine, gone and no one will explain to her what happened. Skeeter acquires a job as a columnist for the local paper at the being of the movie. Skeeter mother’s only concern is for Skeeter to find a husband. Skeeter’s ambition to become a writer starts with her idea to write a novel about from the view of the black maids and nannies in Jackson. Aibileen, who lost her son after he was ran over and dumped at a hospital, works as a maid for a family. She watches after the seventeenth child of a white family. Minny, Aibileen’s friend and a maid, raises children of her own and keep secrets of the white women she works for. The unlikely trio begins to write the stories of the life of the maid from their viewpoint. It is socially unacceptable and against the law in Mississippi to discuss integration. Skeeter needs to recruit more maids to tell their stories. However no maids are willing to help until a series of events happen that change their minds. The book published called â€Å"The Help† with all of the stories having hidden identities. The white women of the town begin to question who the true characters are and where the book is actually taking place. Some of the women swear up and down it is not Jackson to protect themselves from humiliation. The movie along with the book the three wrote during the movie depicts how life was really like in Jackson for black families. There are several areas within the movie that describe what live is Jackson was like. There is a scene in the movie where Aibileen was in the bathroom, built specifically for her because a white lady in the movies says that bla ck people have different diseases than white people. In several scenes in the movie, the maids travel on buses that are for black people only or are at the back of a bus with the white people at the front. Skeeter goes to the  library in Jackson and gets a book with information about segregation and the laws. Blacks could not attend the same schools and churches as the white people. The transferring of books between whites and blacks was not acceptable. They remained with whoever began using them first. They were to remain with the population that started using them. They also use separate entrances to public buildings. Aibileen tells the story of how her son died and explained that they the white bosses loaded him up in the back of a pickup after being ran over. They dropped him off in front of the colored hospital, honked the horn, and drove away. He later died at home with a collapsed lung because there was nothing the doctors could do to save him. The list above shows some of the issues that are within the movie about segregation and discrimination. The movie, filmed well, shows the different views of life and shows different things and values affect different people. There are several other movies that I have watched related to this one including Ali, a movie about an amazing African American boxer during the 60s and 70s and his way to winning the heavy weight title. Remember the Titans, a film related to integration of schools during the early 70s. The movie is about a new African American football coach that faces the challenges with a racially integrated football team.