Synthesis and Characterization of Zn(Tpp) and Cu(Tpp)

Synthesis and Characterization of Zn(TPP) and Cu(TPP) Complexes 1 Project Summary The overall goal of the project is to synthesize two metalloporhyrins, (Tetraphenylporphyrinato)zinc(II) and (Tetraphenylporphyrinato)copper(II). Because metalloporphyrins occur naturally in hemoglobin and chlorophyll, their study has implications in synthesizing human blood as well as utilizing its ability to convert visible light to energy. In addition to these two applications, metalloporhyrins are utilized in supramolecular studies, are being researched for potential photodynamic therapy, and are used in building electronics on the molecular scale. While Zinc and Copper may not be the basis of chlorophyll or hemoglobin, by studying any metalloporhyrin,†¦show more content†¦Due to its highly conjugated structure, hematoporphyrin absorbs most strongly at around 640 nm, a wavelength that penetrates deeply into living tissue. Newer photodynamic therapy agents, including others based around porphyrin, absorb between 650-850 nm, thus allowing for deeper penetr ation of activating radiation into tissues.4 According to a study by Wormald et al.,5 another 3 porphyrin-based compound, known commercially as verteporfin, also shows promise in the treatment of macular degeneration by selectively halting the growth of harmful blood vessels under the retina. The photochemical and optical properties of porphyrin compounds have also made them a target of research in the field of molecular electronics. One goal of this research has been to produce improved optoelectronic devices such as photovoltaic cells, OLEDs and OFETs by imitating the early steps of photosynthesis. 3 The high thermal and photostabilities of porphyrin compounds also contribute to their appeal in the field of material science. Supramolecular structures of porphyrin compounds have also been studied for their electrical properties, and have been used to build nanoarchitectures and molecular assemblies ranging in length from several nanometers to the millimeter scale.1 This particular project focuses on two metalloporphyrins: (Tetraphenylporphyrinato)zinc(II) (Zn(TPP)) and (Tetra phenylporphyrinato)copper(II) (Cu(TPP)). Energy transfer in systems consisting of zinc

Presentation of Portnoy’s Complaint Free Essays

Phillip Roth’s Portnoy’s Complaint is a part of a cultural movement of the 1960s, a raucous man’s story of his sexual obsessions, the plight of a son who has been dominated by his smothering mother and attempts to release his anxieties through masturbation. This story became famous overnight, receiving both wide acclaim and contempt. Roth is described as a product of the 1950s, the last decade in history when education, family values, high culture and high principles were still held in esteem—until demolished by the sexual and psychedelic revolution that followed. We will write a custom essay sample on Presentation of Portnoy’s Complaint or any similar topic only for you Order Now There are notable similarities between Portnoy and Roth himself, and the debate whether the novel is a thinly veiled autobiography still ensues among literary critics. A particular type of Jewish humor can be traced to the activities of Portnoy. Such humor, which features so prominently in the novel, has been effectively identified as a separate kind by Sigmund Freud, who wrote that Jewish jokes were usually directed inwards and characterized by profound self-criticism. The protagonist in Portnoy’s Complaint confesses that his entire life reminds of a Jewish joke, although it is not a joke. Thus, Alex Portnoy seems incapable of escaping any of the downsides of his cultural predicament. Immediately after the book was published, the novel quickly acquired a scandalous flavor, and Roth had to cope with a lot of newly acquired celebrity which he despised so much. This hymn to self-stimulation and liberation of repressed sexuality got reflected in both social sciences and popular culture of Roth’s era. Shades of Portnoy can be seen in Woody Allen’s films. Portnoy’s Complaint was attacked multiple times by the Jewish community for ridiculing their culture and heritage. Norman Podhoretz and Peter Shaw used their positions as editor and associate editor of the conservative Jewish journal, Commentary, to revile at Roth’s alleged hatred of Jewish history and identity. However, the most scathing vilification of the novel came in 1972 from Irving Howe in an essay titled â€Å"Philip Roth Reconsidered†, who accused the author of Portnoy’s Complaint of lack of taste, vulgarity and, above all, homeliness. Despite its central thematic preoccupations, which appear to be embattled Jewishness and masturbation, the novel’s popularity can be explained by the universalism of the issues author strives to explicate, such as the growth and decay of big cities, the difficulty of reconciling the sex urge and the love urge over time, and the painful need to outgrow one’s parents. While many literary influences can be traced in the novel, by far the greatest and the most important is that of Sigmund Freud. The views on Freud’s theory of psychoanalysis as expressed by Alex Portnoy are interestingly controversial: on the one hand, Freud is often alluded to as a source of wisdom; on the other hand, Portnoy seems to implicitly blame Freud for trivializing complex human relationships by his excessive and exclusive focus on sex. Essentially, the revolt against parental authority was very characteristic of the decade: the hippie culture, hitchhiking, and experiments with mind-altering substances were all manifestations of this revolt. Like many of his contemporaries, Alex struggles for his right to be bad, together with the entire generation that won the right to misbehave for their descendants. In this struggle, there were many obstacles Portnoy had to overcome, mostly of internal psychological nature, such as the fear of retribution, especially in the form of castration. It is necessary to note that Portnoy’s Complaint is a perfect illustration of the notion that literature cannot be fully understood without immersion into the cultural realities of the age when a certain work was created. Subtly autobiographic, the novel ought to be analyzed based on knowledge of Philip Roth’s own life and background. Although critics concur that there are notable differences between the loving and caring family Roth grew up in and oppressive and neurotic parents of Alex Portnoy, beyond reasonable doubt, Roth’s experiences with the mainstream American culture and the opposite sex have been reflected in the novel. How to cite Presentation of Portnoy’s Complaint, Papers

Twin Peaks Review Essay Example

Twin Peaks Review Paper Essay on Twin Peaks A book version of the acclaimed once the series Twin Peaks includes five books Twin Peaks: The Secret Diary of Laura Palmer Twin Peaks: Memoirs of FBI Special Agent Dale Cooper Twin Peaks : The murder investigation. Book 1 We will write a custom essay sample on Twin Peaks Review specifically for you for only $16.38 $13.9/page Order now We will write a custom essay sample on Twin Peaks Review specifically for you FOR ONLY $16.38 $13.9/page Hire Writer We will write a custom essay sample on Twin Peaks Review specifically for you FOR ONLY $16.38 $13.9/page Hire Writer Twin Peaks: The murder investigation. Book 2 Twin Peaks: Who killed Laura Palmer The first two, in my opinion, is more successful than the next. One of the sites had read the reviews for The Secret Diary of Laura Palmer, beginning with the words do not breathe on a masterpiece and is still associated with the book, only this phrase. In fact, the book is ambiguous and caused a lot of disputes and misunderstandings. I too have long thought, how to evaluate the product, even for herself. I agree with those who believe that if you read this diary abstract of the film, in addition to rearing of hair shock effect, probably will not be . And only on the background of the film, especially if you are a fan of his, The Diary of Laura Palmer acquires a special appeal. The very essence and form of narration Its a teenage diary. Does anyone remember, at this age, tossed between good and evil actions, trying to identify yourself to yourself then? It is only with adult height seems that childhood a golden time, obey your parents and teachers and become a man. But, my God, how it is difficult, if everything is interesting and I want to try. And any ban only stirs interest. And then really easy to fly off the rails, and after each act, that you yourself also set itself bad, it seems that there is something good in you died, and you along with it good, too And you were childhood diary  «Memoirs of FBI special agent Dale Cooper also a kind of diary tapes. Read that, frankly, it was quite boring. Diary of Laura seemed brighter, even if you remove all the shocking moments. Cooper with his tedious phlegmatic character and the name of Diana (which I will dream!) At the beginning of every sentence As a persons emotional, like him or strangle, or quit reading:) However, so different, but meticulously drawn, fully open heroes. . Here it is, straight from within his own I to the reader on a platter Once again I insist that reading these books without seeing the film is meaningless. Only after the film you get the living heroes with all the overtones of their behavior and actions, as in the movie, and in the continuation of the book And so the idea of ​​creating a book version -. My applause . for the form submission My evaluation of sincerity, emotion and internal honesty. But everything else in the book just the background for our hobbies other parts of this mysterious stories .

Haitians in Miami essays

Haitians in Miami essays Alex Stepick III examines the underlying causes and consequences of the Haitian presence in Miami and finds: (1) A consistent U.S. federal policy designed to repress the flow of Haitian refugees to Miami that was impeded by its own illegality, by political support from Black Americans and national church, civil, and human rights organizations, and by the coincidental arrival and initial welcome of Mariel Cuban refugees. (2) A contrast between negative stereotypes of the Haitians and the reality of a diverse Haitian population, with some having comfortable middle-class life-styles and others being among the countrys most suffering immigrants. (3) Their difficulties, afflicting even those relatively well-off Haitians. He asserts that these difficulties do not occur because of Haitians attitudes, behaviors, or skills. Rather, the majority of the Miamians have discriminated against Haitians. 1970s: A wave of hysteria swept the people of south Florida. There was an unfounded fear that tuberculosis was endemic among Haitians. Many Haitians lost their jobs, and negative stereotypes and fears of Haitians became firmly embedded in the general south Florida population. There was this stereotype that Haitians were disease-ridden, uneducated and unskilled. This was misleading and unfounded. Often Haitian refugees were semiskilled, had some education. A typical refugee had completed only an average of four to six years of formal education. Fewer than 5 percent had graduated from high school. Members of south Floridas political elite-including Democratic party members, elected officials, and some Cubans-believed that the boat people were a disruptive force, destroying the community and draining public resources. The INS expends a far greater effort in controlling the flow of Haitians than before. 1980s: Centers for Disease Control announced that ...

Minimal Pairs Pronunciation Lesson

Minimal Pairs Pronunciation Lesson Minimal pairs are pairs of words that have one phonemic change between them. For example: let and lit. Using these pairs to help students recognize the minor differences between English muted vowel sounds can greatly help not only pronunciation skills, but also comprehension. Aim Improve pronunciation and recognition skills Activity The use of minimal pairs to help students distinguish minor differences between English vowel sounds Level Pre-intermediate to upper-intermediate depending on students capabilities Outline Introduce the idea of minimal pairs by writing a list on the board of a number of minimal pairs. For example: but - boot, sit - set, caught - cut, sing - song, etc.Practice comprehension skills by using the provided lists of minimal pairs. Each list contains one minimal pair with a number of examples.Once students are comfortable with the sounds, read sentence examples (for example: The call took a long time to go through - for the first pair) using one word of the pair provided. Ask students to identify which word of each pair was used.Continue using the list of pairs by asking students to practice the lists.Ask students to identify two vowel sounds which they want to focus on, for example: eh and uh, and have them create their own list of minimal pairs.Have pairs exchange lists and practice reading the others lists aloud.If appropriate, continue lesson by a more extended look into the IPA (International Phonetic Alphabet, see IPA Lesson) Back to lessons resource page

Technology trends in Hospitality Industry Essay

Technology trends in Hospitality Industry - Essay Example Engineering technology is the type of technology that seeks to study, design and expound on other specific types of technology. Modern technology has revolutionized the livelihoods and operational designs of human beings since the mid-20th century. Communication, which is the basic channel of human interaction, has greatly improved over time. In the ancient error, communication was hectic and time consuming. The ancient communication means comprised of messengers, signals such as smoke, drum beating, and letters (Barth & Hayes, 2006, p. 87). Technology has revolutionized the use of the internet, which has made communication within extreme corners of the world possible by the use of e-mails or even skype. Another milestone in the communication sector is the widespread and use of cellphones. Education has also improved in that the internet contains many things that learners strive to get acquainted to (Aswathapp, 2010, p. 45-63). The ancient bookshelves have been reduced to a single folder in a computer. Online education has also been on the rise since courses can be undertaken online. Other fields such as hea lth care facilities have improved through the introduction of modern sophisticated diagnostic tools that carry out effective medical practices. Industrial productivity has been on the rise through the introduction of machinery that performs tasks as many times more effectively as compared to humans. The hospitality industry is a widespread group of fields in the service provision branch that encompasses accommodation, event planning, theme parks, carriage, cruise line, and extra fields inside the travel and leisure industry. The hospitality industry is a billion dollar industry that depends on the availability of leisure time and extra income. According to Vermaan (2011, p. 11), hospitality components such as a cafeteria, guesthouse, or amusement parks comprise of multiple

The Contemporary Practice Of Political Spin Essay

The Contemporary Practice Of Political Spin - Essay Example The United States of America is the world’s most prominent democracy, and though never openly calling itself secular, it has been overt in proving its colorblindness in the matter of religion. But without doubt, Americans are probably more devoutly religious then any other people of the West. This devoutness has been the target of the Republican party of the United States ever since George W. Bush won the election in the year 2000. The stance taken by the present government in the issue of gay marriages and the status of immigrants in the United States provides ample proof of the importance of ambiguity and ‘spin’ in U.S political rhetoric. The Republican Party cannot openly show its opposition to the proposition of same-sex marriages, considering the position that gay people have managed to win in society. Neither can the US government openly state that it considers closing the borders of the country a viable option for ensuring home security, considering that a giant portion of the American workforce comprises of immigrants living and working illegally. Thus in both cases the government has cultivated the backing of the Christian right by using religious terminology and hyperbole.