Biography of Lorraine Hansberry, Playwright and Activist

Biography of Lorraine Hansberry, Playwright and Activist Lorraine Hansberry (May 19, 1930–January 12, 1965) was a playwright, essayist, and civil rights activist. She is best  known for  writing A Raisin in the Sun, the first play by a black woman produced on Broadway.  Her civil rights work and writing career were cut short by her death from pancreatic cancer at age 34. Fast Facts: Lorraine Hansberry Known For:  Lorraine Hansberry was a black playwright, essayist, and activist best known for writing A Raisin in the Sun.Also Known As:  Lorraine Vivian HansberryBorn:  May 19, 1930  in Chicago, IllinoisParents: Carl Augustus Hansberry and Nannie Perry HansberryDied:  January 12, 1965 in New York CityEducation: University of Wisconsin, Roosevelt College, School of Art Institute, New School for Social ResearchPublished Works:  A Raisin in the Sun, The Drinking Gourd, To Be Young, Gifted, and Black: Lorraine Hansberry in Her Own Words, The Sign in Sidney Brusteins Window, Les BlancsAwards and Honors:  New York Drama Critics Circle Award for  A Raisin in the Sun, Cannes Film Festival special award for A Raisin in the Sun (screenplay), Tony Award for Best MusicalSpouse(s): Robert Nemiroff (m. 1953–1964)Notable Quote: [T]hough it be a thrilling and marvelous thing to be merely young and gifted in such times, it is doubly so, doubly dynamic, to be young, gifted  an d black! Early Life The granddaughter of a freed slave, Lorraine Hansberry was born into a family that was active in the black community of Chicago. She was raised in an atmosphere suffused with activism and intellectual rigor. Her uncle William Leo Hansberry was a professor of African history. Visitors to her childhood home included such black luminaries as Duke Ellington, W.E.B. Dubois, Paul Robeson, and Jesse Owens. When she was 8 years old, Hansberrys family moved house and desegregated a white neighborhood that had a restrictive covenant. Though there were violent protests, they did not move out until a court ordered them to do so. The case made it to the U.S. Supreme Court as Hansberry v. Lee, when their case was overturned, but on a technicality. The decision is nevertheless considered to have been an early weakening in the restrictive covenants that enforced segregation nationally. One of Lorraine Hanberrys brothers served in a segregated unit in World War II. Another brother refused his draft call, objecting to segregation and discrimination in the military. Education Lorraine Hansberry attended the University of Wisconsin for two years and she briefly attended the Art Institute in Chicago, where she studied painting. Desiring to pursue her longtime interest in writing and theater, she then moved to New York to attend the New School for Social Research. She also began work for Paul Robesons progressive black newspaper Freedom, first as a writer and then an associate editor. She attended the Intercontinental Peace Congress in Montevideo, Uruguay, in 1952, when Paul Robeson was denied a passport to attend. Marriage Hansberry met Jewish publisher and activist Robert Nemiroff on a picket line and they were married in 1953, spending the night before their wedding protesting the execution of the Rosenbergs. With support from her husband, Lorraine Hansberry left her position at Freedom, focusing mostly on her writing and taking a few temporary jobs. She soon joined the first lesbian civil rights organization in the U.S., Daughters of Bilitis, contributing letters about womens and gay rights to their magazine,  The Ladder. She wrote under an alias, using her initials L.H., for fear of discrimination. At this time, she and her husband separated, but they continued to work together. After her death, he became the executor for her unfinished manuscripts. A Raisin in the Sun Lorraine Hansberry completed her first play in 1957, taking her title from Langston Hughes poem, Harlem. What happens to a dream deferred?Does it dry up like a raisin in the sun?Or fester like a sore- and then run? A Raisin in the Sun is about a struggling black family in Chicago and draws heavily from the lives of the working-class tenants who rented from her father. There are strong influences from her own family on the characters as well. â€Å"Beneatha is me, eight years ago,† she explained. Hansberry began to circulate the play, trying to interest producers, investors, and actors. Sidney Poitier expressed interest in taking the part of the son, and soon a director and other actors (including Louis Gossett, Ruby Dee, and Ossie Davis) were committed to the performance. A Raisin in the Sun opened on Broadway at the Barrymore Theatre on March 11, 1959. The play, with themes both universally human and specifically about racial discrimination and sexist attitudes, was successful and won a Tony Award for Best Musical. Within two years, it was translated into 35 different languages and was performed all over the world. A screenplay soon followed, to which Lorraine Hansberry added more scenes to the story- none of which Columbia Pictures allowed into the film. Later Work   Lorraine Hansberry was commissioned to write a television drama on slavery, which she completed as The Drinking Gourd, but it was not produced. Moving with her husband to Croton-on-Hudson, Lorraine Hansberry continued not only her writing but also her involvement with civil rights and other political protests. In 1964, The Movement: Documentary of a Struggle for Equality was published for SNCC (Student  Nonviolent Coordinating Committee) with text by Hansberry. In October, Lorraine Hansberry moved back into New York City as her new play, The Sign in Sidney Brusteins Window began rehearsals. Although critical reception was cool, supporters kept it running until Lorraine Hansberrys death in January. Death Hansberry was diagnosed with pancreatic cancer in 1963 and she died two years later on January 12, 1965, at age 34.  Hansberrys funeral was held in Harlem and Paul Robeson and SNCC organizer James Forman  gave eulogies. Legacy As a young, black woman, Hansberry was a groundbreaking artist, recognized for her strong, passionate voice on gender, class, and racial issues. She was the first black playwright and youngest American to win a New York Critics’ Circle award. She and her words were the inspiration for Nina Simones song To Be Young Gifted and Black. In 2017, she was inducted into the National Womens Hall of Fame.  In 2018, a new American Masters documentary,  Lorraine Hansberry: Sighted Eyes/Feeling Heart, was released, by filmmaker Tracy Heather Strain. Sources â€Å"Lorraine Hansberry, Creator of A Raisin in the Sun.†Ã‚  Literary Ladies Guide.â€Å"Lorraine Hansberry Biography.†Ã‚  Chicago Public Library.McKissack, Patricia C. and Fredrick L.  Young, Black and Determined: A Biography of Lorraine Hansberry. Holiday House, 1998.

How to Convert Celsius to Fahrenheit

How to Convert Celsius to Fahrenheit Temperature conversions are common, but you cant always look at a thermometer that lists degrees in both Celsius and Fahrenheit. However, all you need to convert between the two is a simple formula. Conversion Formula The formula for converting a measurement in Celsius to Fahrenheit is: F 1.8  C   32 where F is the temperature in degrees Fahrenheit and C is the temperature in degrees Celsius. The formula may also be written as: F 9/5  C   32 It is easy to convert Celsius to Fahrenheit  by following  these two steps: Multiply your Celsius measurement by 1.8.Add 32 to the result. The final answer will be the temperature in degrees Fahrenheit. Note: If you are doing temperature conversions for a homework problem, take care to report the converted value using the same number of significant digits as the original number. Example Imagine, for example, that while traveling in Europe you come down with an illness. You only have access to a thermometer with Celsius measurements, which tells you that your body temperature is  37 degrees. You want to convert this measurement to  Fahrenheit. To do this, plug the  temperature measurement into the equation: F 1.8 C 32F (1.8)(37) 32F 66.6 32F 98.6 The original value,  37 degrees Celsius, has two  significant digits, so the Fahrenheit temperature should be reported as  99 degrees Fahrenheit.

Human Resource Management Employee Selection Processes Research Paper

Human Resource Management Employee Selection Processes - Research Paper Example Methods of selection on the other hand should have some reasonable quality as dictated by the concept of utility. Selected employees should add value to the organization. A method that selects employees who cannot add value to the organization is an ineffective method. Lastly, selection process must adhere to the legal regulations and provisions of employment such as discrimination and equal employment regulations (Ullah, 2010). Organizations selecting employees should ensure that there are no discriminations and equal employment opportunities. Equally suited candidates must be subjected to equal interviews or selection process. One of the easiest and most effective approaches in selecting one of the two equally suited candidates is the thorough analysis and evaluation of experiences and job specifications. There is no doubt that there must be one candidate who is slightly more experienced that the other or has an additional qualification. In the event that they have the same years of experience, academic qualifications, and admirable track or records, the two equally suited candidates should be subjected to various selection processes such as aptitude of panel interview to critically evaluate their uniqueness (Knouse,

Protein Research Paper Example | Topics and Well Written Essays - 6250 words

Protein - Research Paper Example Results indicated antibacterial activity to be present in pepsin-digested lactoferrin and F2 sample. Thus, purification of lactoferricin obtained through peptic digestion of bovine lactoferrin was accomplished by fractionation of the hydrolysate using cation exchange chromatography. Lactoferrin (Lf) is an iron-binding glycoprotein and, as the name suggests, is a constituent of milk. It is also found, to a lesser extent, in various mucosal (exocrine) secretions of mammals that are commonly exposed to normal flora such as tears, nasal exudate, saliva, bronchial mucus, gastrointestinal fluids, cervicovaginal mucus and seminal fluid (Weinberg, 2003). Also, Lf is produced by secondary granules of polymorphonuclear neutrophils for deposition at septic sites. The granular contents of neutrophils can be released into inflammatory fluids after neutrophil death, by what is known as "holocrine secretion". The protein is closely related to transferrin, the iron-transport protein present in the plasma. Lactoferrin is a multifunctional innate-defense protein, known to exert a broad-spectrum primary defense activity against microbes including bacteria, fungi, protozoa and viruses (Orsi, 2004), and even some antibiotic-resistant pathogens (Wakabayashi et al., 2003). Lf is foun d in high concentrations in breast milk (~3–7 mg/ml) and tear fluid (1–4 mg/ml) (Rogan et al., 2006). Among the many constituents of milk which have revealed antimicrobial activity, lactoferrin exhibits both bacteriostatic and bactericidal activity against a wide array of microorganisms, including those causing gastroenteric infections, food poisoning, listeriosis and mastitis (Dionysius et al., 1993). Recently, clinical trials have demonstrated that bovine lactoferrin (bLF) administration can reduce the risk of colon carcinogenesis in humans (Tsuda et al., 2010). A key role of Lf is to scavenge non-protein-bound iron in body

Reaction against hydrogen peroxide Essay Example for Free

Reaction against hydrogen peroxide Essay The action of catalase on hydrogen peroxide Aim The aim of this experiment is to discover the relationship between the concentration of the substrate and the rate of the reaction catalysed by an enzyme, by looking at the decomposition of hydrogen peroxide under the action of catalase, and to determine a value for Vmax and the Michaelis constant for catalase. Background Theory An enzyme is a protein biological catalyst. Catalysts speed up or slow down the rate at which chemical reactions occur. They are not used up in the reactions and can be retrieved unchanged afterwards. Biological catalysts control the rate of reactions in living things. Each enzyme is substrate specific it can control only one reaction. For example, the digestion of starch is begun in the mouth by the enzyme amylase. An equation for this reaction can be shown like this: Amylase Starch Simple sugars The enzyme only facilitates the reaction, it is not used up. Each molecule of enzyme can be reused indefinitely, unless it is damaged, or denatured. Enzymes are proteins, so they are denatured if the polypeptide chains, which are precisely coiled and folded to form the active site, become unfolded by the kinetic energy from heat, or the covalent bonds are disrupted. Whilst some heat will increase the rate of reaction because of the increased number of collisions between enzyme and substrate, too much heat will denature the enzyme and render it completely ineffective. Enzymes are also affected by the pH at which they have to work. Charged hydrogen or hydroxide ions in acids or alkalis can cancel out the charges on the active sites of the enzymes, and render them ineffective. Hydrogen peroxide is a toxin produced in every cell of living organisms as a by-product of respiration. It is the same chemical that is used to bleach hair, and so must be broken down before it can damage the cells. It decomposes to give water and oxygen. This reaction will occur naturally, but at a very slow rate. To speed it up an enzyme is used. The enzyme which catalyses the decomposition of hydrogen peroxide is called catalase. Catalase is found in all living cells to decompose the hydrogen peroxide. In this experiment it is being obtained from live yeast in a suspension. The method by which catalase works is called the lock and key method. Catalase works because it has an active site. At this point the enzyme attaches to the hydrogen peroxide molecule, because the opposite charges of enzyme and substrate attract each other, forming an enzyme substrate complex. The enzyme catalyses the reaction, and then the new charges on the product repel the enzyme away to act on a new substrate molecule. (see fig 1) The decomposition of hydrogen peroxide has the following formula: catalase 2H2O2 2H2O + O2 The rate of a reaction is a measure of the change in the amount of reactant or product with time. The rate of decomposition H2O2 can be measured using the volume of oxygen produced, from the formula: Rate of reaction = change in amount of product time The rate of reaction is determined by collision theory:- For a reaction between two substances to occur, the enzyme and substrate particles must collide with each other. If more collisions occur in a reaction, rate will increase. If the reactant particles gain energy and collide faster, then each collision will have more energy, there will be more successful collisions, and rate will also increase. In this case, the more collisions between hydrogen peroxide and catalase molecules, the more hydrogen peroxide will decompose. Anything which increases collisions will increase rate. Increasing the concentration of the substrate (hydrogen peroxide) solution means that there are more substrate molecules in the same volume, causing more collisions, and thus increasing rate. The rate of reaction changes with concentration, but the overall yield of oxygen is independent of factors affecting the rate, so measuring the amount of oxygen produced over the whole reaction is meaningless. Instead, the initial rate of reaction can be estimated by measuring the volume of oxygen produced in the early stages of the reaction. This value can then be compared between the different concentrations of hydrogen peroxide, and used to plot a graph of substrate concentration against rate, from which values for Vmax and the Michaelis constant (Km) can be obtained. The relationship between substrate concentration and rate of reaction is described by the Michaelis-Menton equation: v = Vmax [S] Km + [S]. Vmax is a measure of the maximum rate at which an enzyme can act, and it is the horizontal asymptote of the graph of substrate against time that is when the amount of enzyme is the limiting factor. The Km is defined as the substrate concentration at which the rate of enzyme action is half Vmax. It is measure of the affinity of an enzyme for its substrate molecule the higher Km, the weaker the binding force between the enzyme and substrate. Both Km and Vmax are constants at a specific enzyme concentration and temperature. Pilot Experiment A pilot experiment was carried out in order to see whether the method was practical and could produce good, reliable results, and to choose the concentrations of hydrogen peroxide and the length of time over which the oxygen would be collected so that no more than 50cm3 of gas was given off. Pilot Method 1. 10cm3 of hydrogen peroxide solution was measured into boiling tubes using a syringe, and the apparatus set up as shown below. 2. Using a 1cm3 syringe the yeast suspension was added to the boiling tube and the stopwatch started. 3. Thirty seconds was timed, and then the burette was taken off the end of the delivery tube, but not out of the water, and the volume of gas collected was measured. 4. This was recorded and repeated for each concentration of hydrogen peroxide, made up as shown in the dilution tables below. Pilot Results Concentration of hydrogen peroxide Initial reading on burette (cm3) Final reading on burette (cm3) Volume of gas collected (cm3) Rate of reaction (cm3/s) to 2dOff scale. Analysis of and Modifications to the Pilot These results show a clear increase in the volume of gas collected as the concentration increases, suggesting that with modifications this method will enable clear conclusions to be drawn. Carrying the experiment out over 30s resulted in too much gas being produced at the highest concentration to be recorded with the apparatus available, so for the main experiment the oxygen will be collected over 15s. More readings will be taken to enable a more reliable graph to be drawn at9 and 20%. The experiment will be repeated three times and any anomalous results will be identified and excluded from the average in order to enable more reliable results. Prediction I predict that initially the rate of reaction will increase with the concentration. As the concentration of hydrogen peroxide increases so will the number of collisions between enzyme and substrate molecules, so the hydrogen peroxide will decompose faster into water and oxygen. I predict that this reaction will obey Michaelis-Menton kinetics, and that the graph of rate of reaction against hydrogen peroxide concentration will give a rectangular hyperbola as shown below: The increase in rate of reaction will not continue indefinitely there will be an asymptote when Rate = Vmax, when all the catalase molecules are catalysing the reaction as fast as possible, and so the rate cannot increase without supplying more enzyme. Main Experiment Plan Fair Test A fair test is one from which a reliable conclusion can be drawn. For a fair test only one variable must be changed at a time. In this experiment the concentration of hydrogen peroxide is being changed, and so all others must be controlled. Variables. Independent Variable:- concentration of hydrogen peroxide Dependent Variable:- volume of oxygen gas collected in 15s Controlled Variables:- temperature, volume of hydrogen peroxide, amount of yeast, apparatus, time.   The reaction will be carried out in a water bath at 20? C. Since water is a good thermal buffer it should be fairly easy to keep the temperature constant.   Volume of hydrogen peroxide solution will be controlled quite easily by using two syringes to measure the water and hydrogen peroxide volumes as dictated by the dilution table below.

psychoanalysis of frankenstein Essay -- essays research papers fc

Essay 2 Psychoanalysis is the method of psychological therapy originated by Sigmund Freud in which free association, dream interpretation, and analysis of resistance and transference are used to explore repressed or unconscious impulses, anxieties, and internal conflicts (â€Å"Psychoanalysis†). This transfers to analyzing writing in order to obtain a meaning behind the text. There are two types of people who read stories and articles. The first type attempts to understand the plot or topic while the second type reads to understand the meaning behind the text. Baldick is the second type who analyzes everything. Since his article, â€Å"Allure, Authority and Psychoanalysis† discusses the meaning behind everything that happens in Mary Shelley’s â€Å"Frankenstein† we can also examine â€Å"The Ones Who Walk Away from Omelas† in the same manner. â€Å"Allure, Authority, and Psychoanalysis† discusses the unconscious wishes, effects, conflicts, anxieties, and fantasies within â€Å"Frankenstein.† The absence of strong female characters in â€Å"Frankenstein† suggests the idea of Victor’s desire to create life without the female. This desire possibly stems from Victor’s attempt to compensate for the lack of a penis or, similarly, from the fear of female sexuality. Victor’s strong desire for maternal love is transferred to Elizabeth, the orphan taken into the Frankenstein family. This idea is then reincarnated in the form of a monster which leads to the conclusion that Mary Shelley felt like an abandoned child who is reflected in the rage of the monster. After reading the article by Baldick, I immediately thought of Ursula K. Le Guin’s â€Å"The Ones Who Walk Away from Omelas.† I was forced to read the story again having an open mind and the idea that everything has an alternative meaning. After doing so, I realized that it contains the same concept of abandonment and anger. In order to keep everything in Omelas prime and perfect one person has to be sacrificed. One child is kept in a broom closet in exchange for the splendor and happiness of Omelas. The people of Omelas know what is in the broom closet and, â€Å"they all understand that their happiness, the beauty of their city, the tenderness of their friendships, the health of their children†¦depend wholly on this child’s abominable misery† (Le Guin 216). Possibly Le Guin was an abandoned child who’s family was happy to see her in misery. This could le... ...ned in a boating accident. Abandonment seems to link her life together with the deaths of three children, her mother, her husband, and the suicide of her half-sister (Cliff Notes 2-3). The critical analysis of â€Å"Frankenstein† in Baldick’s article allowed a similar examination of â€Å"The Ones Who Walk Away from Omelas.† In the end I think it is safe to say that science fiction writing contains some of the authors own experiences whether directly or indirectly. Alternatively, science fiction stories can say something about the reader and that LeGuin wants the reader to look into their own fears of abandonment. Works Cited Baldick, C. "Making Monstrous - 'Frankenstein', Criticism, Theory - Botting,F." Review Of English Studies 45 (1994): 90-99. Coghill, Jeff. â€Å"CliffsNotes Frankenstein† New Jersey: Wiley Publishing, Inc. 2001. â€Å"Dictionary.com† 2 March 2005 < http://dictionary.reference.com/search?q= psychoanalysis> Le Guin, Ursula. â€Å"The Ones Who Walk Away from Omelas† Masterpieces: The Best Science Fiction of the Twentieth Century. Ed. Orson Scott Card. New York: The Berkley Publishing Group, 2001. 212-217. Shelley, Mary. â€Å"Frankenstein† New York: Bantam Dell, 1981.

Alchemy, Compare Paracelsus Essay

Neither Francis Bacon nor Paracelsus claims to be a professional alchemist, however, they both portray a strong defence as to why it is imperative to divulge the mysteries of nature. Both readings assert alchemy as a way of discovering the true forms of things. Paracelsus uses alchemy as a reference point of the past in defence for his use of medicine, whereas Bacon asserts through inductive reasoning that this ‘art of logic’ is how ‘we conquer nature’ (Bacon 1620). What they both get right is their concept of alchemy as an art, and how it is seen as ‘the art of discovery’ (Dawkins 1999). f the divine power. Bacon has two readings that both discuss the matter of alchemy, however, in diverse ways. Firstly, let us acknowledge his insisting on inductive reasoning. Essentially, Bacon presumes through inductive reasoning several interpretations of nature; he chooses this argumentative approach because of his inferences of the unobserved patterns of the future from particulars observed in the past. He suggests an entirely new system of logic, which is based on induction, rather than on syllogism. In fact, Bacon rejects proof by syllogism as it ‘operates in confusion and lets nature slip out of our hands’ (Bacon 1620). Through alchemy, we can conquer nature; overcome the ‘difficult and dark things’ (Bacon 1620). What’s more is the role he suggests of observational experiment as prerequisites for the construction of scientific theory (Bacon 1620). Paracelsus, on the other hand, convinces us that alchemy is ‘nothing, but the art, which can separate the useful from the useless, and transmute it into its final substance and its ultimate essence’ (Paracelsus 1951). He deduces that, without alchemy, there would not be medicine. So we can conclude that when he defends alchemy, he defends medicine, rather than the revelation of the mysteries of nature. In his guide, Bacon discusses how we can teach our minds to be receptive to truth and how our minds can invoke illusions, perceptual illusions – idols of the tribe (Mulder 2000)that are inherent in the nature of the intellect itself. Our senses are how we inspect and analyse the nature of this real world (Bacon 1620), and it is within our subconsciousness that we devise things in certain ways. Our senses affect the way in which we perceive shapes, colours and metals. Whereas Paracelsus talks about physical changes, like from lead to gold. Did he then consider himself to be a ‘natural magician’, who explored the secrets of nature(Gal 2013)? Moreover, he notes the mysteries of nature and how alchemy attempts to reveal and ‘brings to light’ (Paracelsus 1951) what is hidden. There is physical transmutation, an experience, which leads to the unveiling of truth and disproves mystery. What we also should take into consideration is the role of God and how His influence has affected their respective analysis In Bacon’s The Making of Gold, he addresses the negative view on alchemy due to incorrect implementation. He notes that if done in a proper manner with axioms, then it would work and people would be more accepting of it. Similarly, Paracelsus believes his medicine is the only way to recognize and overcome diseases. ‘Physicians who say that the prescriptions (he) writes are poison’ (Paracelsus 1951), are lacking in understanding of natural forces. The mysterium of nature created by God is implemented through alchemy. As a consequence, are alchemists seen to be meddling with God’s creation? If they are, it is supposedly both futile and heretical, and we’ll say: dangerous. Indeed God tasks man with completing his natural creation, for ‘man is nature’s agent and interpreter’(Bacon 1620), however, can we say the transmutation of base metals to gold is a way for mankind to alter the ways of God’s creation, perhaps even replace God’s intentions? For example, the ‘spirit of metal be quickened, and the tangible parts opened’(Bacon 1627) leads to the revelation of gold, hence the alchemist reveals great virtues that ‘lie hidden in nature’(Paracelsus 1951). Here, Bacon presents us with two types of worlds in his Guide to the Interpretation of Nature; nature, free and unconstrained, and nature, confined and harassed when forced from its own condition by art and human agency (Bacon 1627). Essentially, Bacon argues that nature is more likely to reveal its full potential through the ‘harassment of art’, rather than in ‘her own proper freedom’(Bacon 1627). Although Paracelsus asserts that alchemy is indispensable, Bacon accepts the understanding of nature that upheld the theoretical principles of alchemy (Linden 1974). He embraced a similarity of sorts, but one divested in the tremendously complicated system of analogies (those referencing God, included) adopted by Paracelsus and the magicians.