Madonna's Voyage to the iWorld Term Paper Example | Topics and Well Written Essays - 3500 words

Madonna's Voyage to the iWorld - Term Paper Example Music and technology have always gone hand-in-hand. As far as 1877, when the voice was first recorded with the inventions of the phonograph and graphophone, the music industry has already been assisted and improved by what innovation has to offer. Given that Madonna’s rise to stardom happened in the 80s, this is also where this paper will begin to trace the chronology of the technological development in the music industry and how Madonna figured out in all of them. By the end of the 1970s, music sales drop and various record companies start campaigns within the industry to restrain or even eliminate home taping. However, in 1979, cassette popularity skyrocketed with the launch of the Sony Walkman. This introduction corresponds to the upgrading of the sound quality of the cassette. Instantly, the cassette tape became the sole format that can be used in your home, carried in your pocket and played in your vehicle. The Recording Industry Association of America, which is the lobby ing and trade organization of the record industry, constantly fought for taxes placed on blank tapes up until the 1980s. Eventually, legislators gave the music labels a part of the sale of each blank tape. In 1978, Sony and Philips revealed their proposal to collaborate and produce an identical format for the Compact Disc. Record labels then revealed, in 1982, a global standard that guarantees that all kinds of CDs will work on every CD player there is. During the same year, â€Å"52nd Street† by Billy Joel was made public in Japan, which is the first ever CD to be launched in the world. Come 1988, the CD exceeded the LP in terms of sales percentage. The 80s was considered the most important period in the history of the recorded audio industry, primarily because of the launch of the Compact Disc. Within three years of the arrival of the compact disc in the industry, one million CD players have already been sold in the electronics market. In comparison, it took more than a dec ade for the manufacturers of colored television to sell one million TVs. Shortly after the introduction of the CD, the Digital Audio Tape (DAT) was launched. Unfortunately, it was met with abrupt opposition from music publishers and composers since they feared the possibility of the piracy, especially because of the almost perfect duplication capability and excellent sound quality of the DAT. From the kick-off, RIAA contends for a tool to be positioned inside the recorder in order to prevent duplication. Even after this tool, which is known as the "serial copy management system†, was placed on all DAT recorders sent to the United States, composers and music publishers continued claiming for fees on every DAT tape or machine sold as a compensation in case of home taping. This dispute led to the lack of support of the format from the record industry. Seeing that the DAT format is not feasible, record labels decided not to produce or market pre-recorded DATs. Since there is no pr e-recorded tape, no one will buy a recorder. Ultimately, since there are no sales for recorders, a market for pre-recorded tape is non-existent. In 1990, the mishmash of the Internet and digital audio started an explosive phenomenon – the creation of the Moving Pictures Experts Group-1 Layer-3 or simply MP3. This is a compressed audio file with a small size but still the same sound quality. This format makes file transfer way easier. Madonna knew well how she can make use of these new technological developments in the music industry to the fullest. The internet also made her popularity easier to enhance and spread out. However, along with advantages are disadvantages brought about by the same technological innovations. A proof of pop superstar Madonna’s awareness of how technology can advance her career is her fight to gain tight and control over a domain name that clearly alludes to her name and makes use of her popularity. The said domain, madonna.com, is actually a pornographic website that is obviously riding with her name’

Sophocles, Oedipus the King Essay Example for Free

Sophocles, Oedipus the King Essay The following analysis will examine Oedipus the King, by Sophocles. The following questions will be addressed: What is the historical context of this period? What are the storylines, as revealed in the document? What does the document reveal about the Greek notion of fate and free-will? Who was the author and does he reveal a bias? What was the author’s intent in writing this and whom did he see as his audience? And lastly, what stands out as particularly meaningful and why? The historical context of the period reveals the Greeks believed the gods could see everything that humans did and could, if they choose, fulfill such needs as food, shelter and clothing as well as wants like love, wealth and victory. [1] The Greeks were often described as â€Å"independent-minded† and there seems to be no doubt that geography played a major role in shaping that character. It was the mountains and the sea that molded Greece and Greeks into what they were. [2] Polytheism is a belief in many gods and syncretism reflects a willingness to add foreign gods into the belief system-even if the new additions dont exactly fit. 3] Fate was very important to the ancient Greeks, which played a huge role in there daily life actions and behaviors which they believed would affect their fate in life. The Greeks created Greek mythology; this was the body of their myths and teachings. It was concerning their gods and goddesses, their heroes, and the nature of the world to them. â€Å"It was God that aided you, men say, and you are held with God’s assistance to have saved our lives Now Oedipus, Greatest in all men’s eyes, here falling at your feet we all entreat you, find us some strength for rescue. [4] The storyline of Oedipus- the King, Sophocles starts in front of the palace of Oedipus at Thebes. Oedipus is the King of Thebes, this is where the play is based around. â€Å"Oedipus the King† was believed to be written around 430 B. C, in the city of Thebes. A horrible plague has come into this city, making everyone sick and dying. Oedipus comes through the central doors to find a priest and a crowd of children praying to the gods to free them from this horrible curse, the plague. The priest is begging Oedipus to go and save the city. Oedipus explains to the priest how he has sent Creon who is his brother-in-law to speak to Apollo at his Pythian temple to find out how to save the city. Once Creon arrives back he tells Oedipus what he has heard from God. He explains that God commands them to drive out a pollution from their land, a pollution that had grown ingrained within their land. They were talking about when Laius was murdered. Lauis was the king before Oedipus had piloted the state. His murdered was said to happen many years before this plague had happened, and no one took any action into finding out what happened, or who had done it. Everyone who was with Lauis at the time was killed as well, except for one messenger who fled in terror. This messenger could only speak of one thing; how there were many robbers, and this king was killed by many. Now Oedipus goes on trying to solve this murder in order to help his city. He soon will learn of Creon turning against him. He then turns to his wife Jocasta to help him better understand events that lead up to the death of Lauis, and to understand more about the death of Lauis. After this is done you start to get an understanding of what this play is really about. The notions of fate and free-will are revealed during the play when they are talking about Oedipus’s life. This is a dramatic tale of a great king who is brought down by â€Å"fate† and the destiny of the gods. Prophecy is one of the main things of Oedipus the king. Oedipus tells Jocasta whom is his wife, of a prophecy he has heard as a young man. This prophecy was that he would kill his father and sleep with his mother. Jocasta then tells Oedipus of a prophecy just like his that was given to Laius; her son would grow up to kill his father. Oedipus seems only to want to flee his fate, but his fate continually catches up with him. OEDIPUS: â€Å"Why should man fear since chance is all in all for him, and he can clearly foreknow nothing? Best to live lightly, as one can, unthinkingly. [5] Oedipus has a strong will to find out about his past, and to discover the truth about things in his life. Jocasta is the one trying to keep him from clearly getting answers to things he wants to know. â€Å"Jocasta: I beg you- do not hunt this out- I beg you, if you have any care for your own life. What I am suffering is enough. [6] Oedipus then responds to her showing us how he is free willed and wants to know his fate in life. Oedipus: Break out what will! I at least shall be willing to see my ancestry, though humble. Perhaps she is ashamed of my low birth, for she has all women’s high flown pride. But I account myself a child of Fortune, beneficent Fortune, and I shall not be dishonored. [7] It just proves that Oedipus has a strong will of finding things out no matter what happens. He believes his fate will play out one way or the other. The author of Oedipus is Sophocles was an innovator of drama. His main stories were, Sophocles, Euripides and Aeschylus. These three were well-known as masters of tragedy. 8] Sophocles’s most famous surviving work includes the Theban plays: Oedipus Rex (sometimes called Oedipus Tyrannus) Oedipus at Colonus, and Antigone. There are different quotes through out Oedipus the King that leads you to believe Sophocles as an unbiased writer in this play. â€Å"But do not charge me on obscure opinion without some proof to back it. It’s not just lightly to count your knaves as honest man, nor honest men as knaves. To throw away an honest friend is, as it were, to throw your life away, which a man loves the best. †[9] There are so many different lessons to be learned in Oedipus the king. These are lessons I believe that everyone today could benefit from. It shows the downfalls of someone being arrogance and selfishness, what kind of actions can happen from being judgmental, and the repercussions of being quick to act without sufficient knowledge. These are things that a lot of people in the world do not understand well, and a lot of times many people do a lot of things with out thinking or worrying about any repercussion. The author’s intent is clear because he shows you that we shouldn’t temp fate. What’s going to happen will happen, and in this case it did happen in a disaster. Jocasta: Do not concern yourself abut this matter; listen to me and learn that human beings have no part in the craft of prophecy. [10] It seems apparent that the intended audience would have been the people who already knew the Oedipus story. These people would experience the effects of a dramatic irony as they watched the unfortunate events play out during the play. In conclusion, what stands out as meaningful from Oedipus’s story is that no matter what you try to do fate will always win. You can not do wrong to someone or something and get away with it. Over time it’ll come back to you and it won’t always work out the way you want it to. This historical period has lead you through a time when someone did something wrong and was taught a lesson. In Oedipus’s story you gain an insight of the Greek tragedy, and you learn about fate and irony. Learning about fate and free will is something that allows you to get a better understanding of the two. When you see something happening to someone that’s so tragic, it gives you a better understanding of the meaning, and allows you to see things really do happen to people who do wrong.

Effect Of Boiling On The Vitamin C Biology Essay

Effect Of Boiling On The Vitamin C Biology Essay Abstract This experiment was designed to investigate the effect of boiling on the vitamin C content of selected vegetables (bitter gourd, broccoli, cabbage, cauliflower, green pepper, sweet peas, long beans and tomato). Vegetables were boiled for 10 minutes. The juices of both raw and boiled vegetables were extracted and titrated with 1 cm3 of 0.1% DCPIP solution. The volume of each juice needed to decolourise the DCPIP solution was measured and the vitamin C content was determined. The same procedure was repeated with other types of vegetables. The statistical t-test (paired sample) showed that the vitamin C content of raw vegetables is significantly higher than that of boiled vegetables. The results support the hypothesis; boiling reduces the vitamin C content of vegetables. Cumulative word count: 135 Research and Rationale Vitamin C is needed for growth, the healings of wounds, and the repair and maintenance of cartilage, bones and teeth. It is essential in the formation of collagen, a structural protein needed in the synthesis of skin, scar tissue, tendons, ligaments and blood vessels.  [1]  The antioxidant activity of vitamin C reduces the damage caused by free radicals, which contribute to aging, cancer, heart disease and inflammatory conditions.  [2]  Vitamin C improves resistance to infection and reduces the risk of cardiovascular diseases by raising the level of blood high-density lipoproteins (HDL) cholesterol.  [3]  4 The Recommended Dietary Allowance (RDA) of vitamin C is approximately 90mg for men and 75mg for women.2 Vitamin C must be consumed through our diet because it is not stored in our body. Since it is water soluble, excessive amounts of vitamin C are excreted via urine.1 Deficiency in vitamin C can lead to scurvy.  [5]  Sources of vitamin C include citrus fruits and fresh vegetables.  [6]   Cumulative word count: 337 The main biologically active form of vitamin C is ascorbic acid. In this experiment, the presence of ascorbic acid is indicated by a redox dye, DCPIP (2,6-dichloroindophenol).  [7]  DCPIP reacts with ascorbic acid in a 1:1 ratio. Ascorbic acid, being a reducing agent, reduces the DCPIP, while ascorbic acid itself is oxidised to dehydroascorbic acid. Ascorbic acid Dehydroascorbic acid DCPIP (blue) Reduced DCPIP (Colourless) Figure 1: The oxidation of ascorbic acid and reduction of DCPIP  [8]   The end-point of this DCPIP titration is when the blue colour of DCPIP disappears, forming a colourless solution which persists for 10 seconds or more.8 This method is chosen because DCPIP is less toxic. It is assumed that the vegetable tissue component which reduces the DCPIP rapidly is vitamin C. Cumulative word count: 495 Traditionally, vegetables are cooked to destroy germs, to soften the food so that it can be easily digested, to make them look attractive and to enhance the taste.  [9]  1011However, the stability of vitamin C is affected by exposure to air or light, presence of metals or heat and alkalinity. Marzena et al (2007) reported that boiling caused a reduction in vitamin C content (3.68 mg/100g in potatoes and 2.38mg/100g in carrots)  [12]  . This experiment was aimed to compare the vitamin C content of raw and boiled vegetables, thus determining the best method of consuming them so that the intake of vitamin C is maximised. Vegetables selected are those which are eaten raw or after being boiled by Malaysians. Vegetables such as broccoli and green pepper were selected because of their high vitamin C content so that the loss of vitamin C during boiling is more significant. Furthermore, the vitamin C content of cooking water of broccoli, cauliflower, cabbage and tomato were also determined to identify whether the vitamin C content was lost due to heat from boiling or leaching into the cooking water. These vegetables were chosen because they are the typical ingredients to make vegetable soup. Some people rarely eat raw vegetables.  [13]  14The results from this experiment can be used as evidence that eating fresh, raw vegetables are healthier as they contain more nutritional values. Consuming boiled vegetables may result in a lower intake of vitamin C because the water used for boiling is usually discarded. Thus, it may also be advisable to use the cooking water as a soup base to prevent wastage of vitamin C. Cumulative word count: 855 Experimental Hypothesis The vitamin C content of the raw vegetables is significantly higher than that of boiled vegetables. Null Hypothesis There is no significant difference between the vitamin C content of raw and boiled vegetables. Variables Manipulated: State of vegetables (raw, boiled) Responding: Volume of vegetable juice needed to decolourise 1cm3 DCPIP solution Fixed: Type and concentration of vegetable juice, length of exposure to air after blending the juice, volume of 0.1% DCPIP solution, standard vitamin C solution, boiling time and amount of water used for boiling. Apparatus Test tubes, test tube rack, 500ml volumetric flask, pipette (to measure accurately to 1cm3), burette, pestle and mortar, measuring balance, glass rod, 200ml beaker, blender, a stainless steel pot and stove. Materials 0.1% DCPIP solution, vitamin C tablet, distilled water, muslin cloth and eight different types of vegetables listed in Table 5. Cumulative word count: 995 Planning A trial experiment was conducted using cabbage to determine the most suitable method of manipulating the variable. The vitamin C was extracted by blending 100g cabbage in 100ml distilled water using a commercial blender. The juice extracted was then boiled for 10 minutes. Another 100g of cabbage was boiled in 100ml cooking water for the same period of time. The boiled cabbage was blended to extract its juice. The control experiment was carried out using raw cabbage juice. Cabbage Volume of cabbage juice needed to decolourise 1 cm3 DCPIP solution (ml) Raw 9.70 Blended, then boiled 11.30 Boiled, then blended 15.75 Table 1: Results for the different methods used to determine the volume of juice needed The results show that boiling the cabbage before blending it had the most significant effect on the vitamin C content. Besides, this is the conventional way of cooking. Thus, the method of boiling before blending was used. The ratio of cabbage to cooking water to be used was identified. 100g of cabbage was added to either 100ml (1:1 ratio) or 200ml (1:2 ratios) distilled water and boiled. Cabbage Cabbage to cooking water ratio Volume of juice needed (ml) Raw 9.70 Boiled 1:1 1:2 13.65 15.85 Table 2: The volume of cabbage juice needed with respect to different cabbage to cooking water ratio Based on table 2, when a ratio of 1:1 was used, the difference in volume of juice was small. Thus, the cabbage to water ratio was changed to 1:2 so that the effect was more significant. Cumulative word count: 1251 The most suitable concentration of DCPIP solution to be used was determined. 0.1g of DCPIP was dissolved in either 100ml or 10ml distilled water. Volume of distilled water (ml) Concentration of DCPIP solution (%) Volume of cabbage juice needed (ml) Raw Boiled 100 0.1 9.7 15.7 10 1.0 34.6 54.0 Table 3: The volume of cabbage juices needed to decolourise 1 cm3 DCPIP solution with respect to different concentration of DCPIP solution DCPIP solution of concentration 0.1% was used because a smaller volume of cabbage juice is needed to decolourise the DCPIP solution. This makes the procedure easier and shortens the experimental time. Cumulative word count: 1354 Real Experimental Procedures I Preparing standard vitamin C solution A vitamin C tablet was crushed into fine powder with a pestle and mortar. 62.5mg of the vitamin C powder was weighed using a measuring balance. The powder was dissolved in a 200ml beaker by adding 10ml portions of distilled water. The solution was stirred using a glass rod. The solution was transferred into a 500ml volumetric flask. The beaker and glass rod were rinsed with successive portions of distilled water and the washings was transferred into the flask. The solution was made up to mark using a dropper. The solution is now exactly 0.125 mg of ascorbic acid per cm3 of solution. Steps 2 to 4 were repeated to prepare different concentrations of vitamin C solution listed in Table 4 using different amounts of vitamin C powder. II Preparing standard curve of vitamin C 1cm3 of 0.1% DCPIP solution was pipette into a test tube. A burette was filled with 0.125 mg cm-3 vitamin C solution. The vitamin C solution was added drop by drop into the test tube containing DCPIP solution until the blue DCPIP decolourises. The tube was shaken gently after each drop. The volume of vitamin C solution needed was measured. The procedure was repeated twice to get an average titre. Steps 1 to 4 were repeated using vitamin C solution of concentrations listed in Table 4. A standard vitamin C curve (Graph 1) was plotted based on the result. Cumulative word count: 1608 III Identifying the vitamin C content of raw and boiled vegetables The non-edible parts of a bitter gourd were removed. 100g of bitter gourd was blended in 100ml distilled water using a commercial blender and was filtered using a muslin cloth. The volume of the freshly extracted vegetable juice needed to decolourise the DCPIP solution was determined using steps 1 to 4 in Experiment II. 100g of bitter guard was boiled for 10 minutes in 200ml boiling water using a 5-inch-deep stainless steel pot. After 10 minutes, the boiled bitter gourd was immediately removed from the cooking water and cooled by immersing in an ice-cold water bath for 5 minutes. Steps 2 and 3 were repeated using the boiled vegetables. This experiment was repeated with the other vegetables listed in Table 5. The vitamin C content of all vegetables was calculated using the standard vitamin C curve. The data of volume needed and vitamin C content were tabulated. A graph of vitamin C content of raw and boiled vegetables was plotted. A t-test was used to statistically analyse the data. IV Identifying how vitamin C is loss The cooking water of broccoli, cabbage, cauliflower and tomato was collected. 200ml distilled water was added to the cooking water. It was cooled by immersing in an ice-cold water bath for 5 minutes. Steps 1 to 4 in Experiment II and steps 8 and 9 in Experiment III were repeated using the cooking water. The difference between vitamin C content of vegetables before and after boiling (inclusive of its cooking water) was calculated. A graph of vitamin C content of cooking water was plotted. Cumulative word count: 1895 Safety Precautions Heat resistant gloves were worn when dealing with boiled vegetables. Laboratory coat and goggles were worn to prevent the DCPIP solution and vitamin C solution or vegetable juices from staining the clothes or skin, or getting into the eyes. All glasswares such as test tubes, pipette and beakers were handled with extra care since the apparatus could break easily and cause injury. When using the burette, care must be taken to ensure that no air bubbles were trapped at the jet which may affect the accuracy of the titre. Cumulative word count: 1990 Results I Preparing standard vitamin C solution Mass of vitamin C powder (mg) Concentration of Vitamin C solution (mg cm-3) Volume of vitamin C solution (ml) 1 2 3 Average 62.5 0.125 10.30 10.20 10.20 10.20 125.0 0.250 5.20 5.20 5.15 5.20 187.5 0.375 4.00 4.05 4.00 4.00 250.0 0.500 2.90 3.00 3.00 3.00 312.5 0.625 1.80 1.80 1.80 1.80 375.0 0.750 1.40 1.35 1.50 1.40 Table 4: The mass of vitamin C powder needed for serial dilution and the volume of vitamin C solution needed to decolourise 1 cm3 DCPIP solution Cumulative word count: 2082 II Standard Vitamin C curve Cumulative word count: 2133Graph 1: Graph of volume of vitamin C solution needed to decolourise 1 cm3 of 0.1% DCPIP solution against concentration of Vitamin C III Calculating the vitamin C content of raw and boiled vegetables From graph 1, vitamin C solution is needed to decolourise 1 cm3 0.1% DCPIP solution. Using the formula: where v = Volume of vitamin C solution needed to decolourise the DCPIP solution c = concentration of vitamin C solution k = constant It can be derived that: Thus, the vitamin C content of vegetables, c can be calculated by: Cumulative word count: 2219 Types of vegetables Volume needed to decolourise 1cm3 0.1% DCPIP solution (ml) Raw vegetables Boiled Vegetables 1 2 3 Average 1 2 3 Average Bitter gourd 2.40 2.55 2.45 2.50 4.20 4.05 4.10 4.10 Broccoli 4.25 4.20 4.15 4.20 6.20 6.15 6.20 6.20 Cabbage 9.70 9.55 9.60 9.60 15.60 15.80 15.75 15.70 Cauliflower 2.85 2.85 2.65 2.80 3.65 3.65 3.75 3.70 Green pepper 1.20 1.05 1.30 1.20 3.50 3.40 3.60 3.50 Sweet peas 4.25 4.40 4.25 4.30 9.00 9.00 8.80 8.90 Long beans 13.00 13.00 12.90 13.00 21.00 21.20 20.90 21.00 Tomato 0.55 0.70 0.60 0.60 1.85 2.00 1.90 1.90 Table 5: Volume of juices needed for different types of raw and boiled vegetables Types of vegetables Vitamin C content (mg cm-3) Raw vegetables Boiled Vegetables Bitter gourd Broccoli Cabbage Cauliflower Green pepper Sweet peas Long beans Tomato Cumulative word count: 2387Table 6: Vitamin C content of raw and boiled vegetables Cumulative word count: 2430Figure 2: Bar chart of vitamin C content of raw and boiled vegetables IV Identifying how vitamin C is loss Cooking water Volume needed to decolourise 1cm3 0.1% DCPIP solution (ml) Vitamin C content (mg cm-3) 1 2 3 Average Broccoli 13.20 13.00 13.15 13.10 Cabbage 15.20 15.20 15.00 15.10 Cauliflower 15.70 15.85 15.80 15.80 Tomato 9.45 9.50 9.50 9.50 Table 7: The vitamin C content of cooking water Types of Vegetables Vitamin C content (mg cm-3) Before boiling After boiling Difference = Before After (Raw Total) Raw Boiled Cooking water Total (Boiled + Cooking water) Broccoli 0.4277 -0.0009 Cabbage 0.2335 0.0460 Cauliflower 0.6004 -0.0425 Tomato 1.1369 -1.8631 Cumulative word count: 2553Table 8: Difference in total vitamin C content before and after boiling Cumulative word count: 2598Figure 3: Bar chart of vitamin C content of cooking water Statistical Analysis The paired sample t-test was used to analyse the data. Types of vegetables Vitamin C content (mg cm-3) Difference, d = Raw Boiled Raw Boiled Bitter gourd 0.7200 0.4390 0.2810 Broccoli 0.4286 0.2903 0.1383 Cabbage 0.1875 0.1146 0.0729 Cauliflower 0.6429 0.4865 0.1564 Green pepper 1.5000 0.5143 0.9857 Sweet peas 0.4186 0.2022 0.2164 Long beans 0.1385 0.0857 0.0528 Tomato 3.0000 0.9474 2.0526 Table 7: Difference in vitamin C content of raw and boiled vegetables Cumulative word count: 2735The calculated t-value (2.005) shows it is significant whereby it exceeds the tabulated t-value, which is 1.895 (p Data Analysis The vitamin C content of raw vegetables is on average 0.4945 mg cm-3 higher than that of boiled vegetables. The percentage loss of vitamin C during boiling is 56.22%. Error bars displayed on Figure 2 represent the overall distribution of the data. Upper error bar for boiled vegetables does not overlap the range of value within error bar of raw vegetables. Thus, these two vitamin C content values differ significantly. Figure 2 shows that raw vegetables have higher vitamin C content than boiled vegetables, suggesting that it is best to eat raw vegetables rather than those boiled. Nevertheless, if vegetables were to be boiled, it is advisable to serve the vegetables with the cooking water since vitamin C is found in the cooking water after boiling (Figure 3). Cumulative word count: 2865 Boiling breaks down the cell wall of vegetables, causing their permeability to increase. Vitamin C, being water-soluble, leaches into the cooking water. This agrees with the data in Table 7 as vitamin C is found in the cooking water after boiling. The vitamin C is lost as the cooking water is discarded.  [15]   The reduction in vitamin C content of vegetables (including their cooking water) after boiling as shown in Table 8 agrees with the suggestion that vitamin C is lost due to thermal degradation.  [16]  17The high temperature of boiling water increases the rate of oxidation of L-ascorbic acid to L-dehydroascorbic acid. L-dehydroascorbic acid, being unstable, tends to undergo hydrolysis to form diketogulonic acid, a physiologically inactive compound. This suggests that heat produced during boiling can cause vitamin loss. Figure 4: The destruction of vitamin C  [18]   Burg Fraile (1995) reported that vitamin C can also be destroyed by enzymatic destruction and enzyme thermal deactivation reactions during home cooking.  [19]  20 Cumulative word count: 3123 However, the results differ for cabbage. Unlike the other three vegetables, the total vitamin C content of cabbage after boiling is 0.0460 mg cm-3 higher than that of raw cabbage. This may be due to the more complete extraction of juice as the cabbage tissue is softer after boiling. The results of my investigation are supported by a previous investigation by Podsedek A. et al (2007) on two varieties of red cabbage Koda and Kissendrup. The vitamin C content of vegetables decreased after boiling.  [21]   Cooking method Cooking time (min) Vegetable: water (g/ml) Koda Kissendrup Vitamin C content (mg/100g) Raw cabbage 72.56 62.00 In boiling water 20 1:2 23.74 26.77 20 1:1 33.61 38.36 10 1:1 31.74 38.72 Table 8: The effect of boiling on the vitamin C content of red cabbage Moreover, Carol Reiss (1993) reported an average of 21.75mg/100g ascorbic acid in the cooking water after boiling a cabbage. This agrees with my results that vitamin C is present in the cooking water after boiling.  [22]   Cumulative word count: 3360 Evaluation The tube was shaken gently and consistently during each experiment after each drop of vitamin C solution to allow rapid diffusion of vitamin C throughout the DCPIP solution. Shaking the tube too vigorously may cause oxygen from air to dissolve and oxidise the reduced DCPIP solution, restoring the blue colour. Then, an increased volume of vegetable juice may be needed. All vegetable juices, as well as those boiled, should be titrated with the DCPIP solution once they have been extracted because vitamin C is easily destroyed by the atmospheric oxygen via oxidation. The DCPIP solution must be freshly prepared on the day of experiment. The DCPIP solution was filtered to avoid any impurities suspending at the bottom of test tube. Similarly, the vegetable juice was filtered to remove the vegetable pulp which may clog the burette tap. The non-edible parts and damaged leaf or stem of the vegetable samples were removed. Vegetables were cut into small cubes of about the same size so that the surface area exposed to the cooking water is constant. They were added into the pot only after the water starts boiling to keep the boiling temperature and duration constant. A stainless steel pot was used as ordinary pots may have transition metals which may oxidise the ascorbic acid. Before starting the experiment, a rough titration was run to determine the exact colour change at the end point. For cauliflower, the colour may change from blue to pale yellow, which is the colour of the cauliflower juice. [Appendix] To minimise inaccuracy, the procedure was repeated to get an average titre. Eight types of vegetables were sampled to obtain enough replicates to support the hypothesis. A burette and pipette were used because of their high accuracy. Burette readings are accurate to 0.05cm3. Since two readings are taken, there is a combined error of  ± 0.1cm3. If the titre is 20.00cm3, the possible error due to apparatus is 0.5%. Cumulative word count: 3682 Limitations in this experiment include the ripeness, place of origin, storage and handling conditions of the vegetables.  [23]  The season of year and time of day from which the vegetables were picked were uncontrollable. They were bought from a hypermarket and were chosen based on their appearance such as colour and degree of damage. Modifications include repeating the experiment using other types of vegetables such as potatoes and carrots. Boiling may have different effects on different varieties of vegetables as their nutritional contents vary. Using only eight types of vegetables may give a wrong representation on the effect of boiling on the vitamin C content of all vegetables. The experiment can also be modified to investigate the effect of other cooking methods like deep-frying, steaming and microwave cooking on the vitamin C content of vegetables thus determining the best cooking method which results in minimal vitamin C loss. To ensure complete extraction of ascorbic acid, the vegetables can be blended with 5% metaphosphoric acid. This acid inactivates the enzyme ascorbic acid oxidase (an enzyme present in many plant tissue) which catalyses the oxidation of ascorbic acid when the cell components of a vegetable is mixed during blending.  [24]  25 Conclusion Boiling significantly reduces the vitamin C content of vegetables (by 56.22%). The vitamin C content of raw vegetable is significantly higher than that of boiled vegetable. Cumulative word count: 3947 Source Evaluation Source 4 is a published book with ten contributors. Hence, the information provided is reliable and factual unless it has become out-dated since it was published in 1993. Source 5 (The Star) is Malaysias most widely-read English-language daily. One of its pullouts, Fit for Life, provides up-to-date articles on diet and nutrition. Therefore, the information can be trusted. ScienceDirect (Source 10) offers more than 2,500 peer-reviewed journals and more than nine million full-text articles. EBSCO (Source 11) provides online information databases and has a renewal rate of 99.6%. Thus, these online-journal sources are trustable. Source 12 is a website produced by the National Library of Medicine, a part of the National Institutes of Health. It shares extensive information on over 800 diseases and health conditions, and is reviewed at least every 6 months. Thus, it should be reliable. Cumulative word count: 4087 Appendix Figure 2: The colour change at end point for cauliflower Cumulative word count: 4098

Acid Precipitation Essay -- essays research papers

  Ã‚  Ã‚  Ã‚  Ã‚   Sitting in your room late at night, you listen to the gentle pittter-patter of the rain on your window. Ahh, so soothing and relaxing. Have you ever really wondered what the rain is really made of? Is that just water or is it acid slowly streaming down out there? That rain you hear just might be acid rain, it could change the way you live your life.   Ã‚  Ã‚  Ã‚  Ã‚  The commonly used terms â€Å"acid rain† and â€Å"acid precipitation† describe specific forms of a type of pollution described generally as â€Å"acid deposition.† Harmful gases that rise into the air mix with cloud moisture, sunlight, and oxidants. There they chemically combine into dilute sulfuric and nitric acids, which fall back to the earth. This is acid deposition. The major contributing pollutants are sulfur dioxide and nitrogen oxide (Morgan, 5). â€Å"Acid rain† is basically rainwater with a pH level lower than 5.6 (Morgan, 3). The term pH means â€Å"potential hydrogen†. When a substance has a pH level of 7, it is completely neutral with the same number of hydroxyl and hydrogen ions (Pringle, 6). Acidity in the atmosphere can be changed by many natural things. When a volcano erupts, sulfur dioxide is spewed out. Droughts produce unusually dry soil conditions allowing dust particles to be carried upward into the air, neutralizing the acids that may be present at the time (Pringle, 4). Acid Rain can come in concentrations sometimes more acidic than lemon juice. These pollutants reach the earth in rain, snow, hail, sleet, or fog. The rain at the beginning of a shower is usually more acidic than the rain that follows. Dry acidic particles can also fall from the atmosphere. Because wind can carry gases and moisture for hundreds of miles, even areas far away from the source bear the effects of acid deposition (Durha m, 10). There are of course, many things that we as humans do everyday to promote and support the continuation of acid rain. Not intentionally, of course. When the fossil fuel, (i.e. coal) is used, the sulfur in it mixes with Oxygen in the air to form sulfur dioxide. The sulfur dioxide is eventually turned into acid over a matter of days. Coal-fired power plants are the single greatest cause of acid rain in the United States. They account for two-thirds of all sulfur dioxide emissions in the US (Pringle 16; Morgan 75). In the mid-1980’s, the United states alon... ...ain can aggravate a person's ability to breathe and may increase disease, which could lead to death (Bennet) In conclusion, any rain with a pH level lower than 5.6 are classified as acid rain. Acid rain is made when sulfur dioxides mix with nitrogen oxides to form acids. The acids then can come back down out of the atmosphere in either a dry or a wet form. Both of these have proven devastating to both aquatic animals and forests. Billions of dollars have been spent to correct and try to fix what acid rain had done to buildings and monuments. Acid rain also has its toll on the health of us humans. The food you eat could be contaminated with toxins due to acid rain, you’d never know it either. Sources: Bennet, Mark. â€Å"Acid Rain† 2-25-00. Online. Internet. 1-17-96 Available WWW: http://www.soton.ac.uk/~engenvir/enviroment/air/acid.home.html Durham, Jack. Acid Rain: A Student’s First Sourcebook. Diane Publishing Co.: 1994. Morgan, Sally. Acid Rain. Franklin Watts, Incorporated 1999. Phamornsuwana, Sam. â€Å"Effects of Acid Rain† 2-24-00. Online. Internet. 1-5-99 Available WWW: http://www.epa.gov/acidrain/effects.html Pringle, Laurence. Rain of Troubles. Macmillan Publishing Co.: 1988.

Era of Fashion

An Era of Fashion Webster dictionary states that fashion is â€Å"The make or form of something. The prevailing style during a particular time. † Personally, I believe fashion is not Just what you wear but a state of mind. I once read a quote by Coco Channel that read, â€Å"Be daring, be different, be impractical, be anything that will â€Å"assert integrity of purpose and imaginative vision against the play-it-safer, the creatures of the commonplace the slaves of the ordinary. † This to me said it all.Fashion is about showing the true o and the statement that you want to make on that particular day, weather that statement is bold or casual in sweat pants and a white T. Fashion is not Just what we see everyday in magazines. Fashion is what you make it. During the pre ass's through the early to mid-ass's fashion trends such as the mini skirt, maxi skirt, mini dress, the halter neck cat dress, flared trousers, empire dresses, high waist banana sears, bell bottoms, army Jackets and Jumpsuits were all the rage.Two of the more well known people I believed to represent the ass's well was, Affray Facet, who cocked the feathered hairstyle and ass's style well for the ladies and Elvis Presley who was well known for always looking amazing in Jumpsuits showed the boys exactly how to make an outfit look good. In the photos I have chosen to use you will see my Grandparent's, my Uncle, my mother and my father. My Grandparent's and Uncle have always lived in Tucson, Az as for my mother for most of her life has lived in Tucson, except with a two year influence from her time spent in California.As for my father he was born and raised in Nassau, Bahamas until his college years when he moved to Tucson. The pictures were not taken for a particular reason other than to remember the time my father went to the Pimp Air Show and the time my mother spent visiting Harbor Island. The trends in both hair style and garments are shown. For instance my mother in the black an d white photograph shows Just how being â€Å"hip† in that time of age would have been represented, which was shown by the mini dress and having hair as big as you could get it to go. The types of clothing shown in my pictures are more on the casual side of everyday life in the U.S. Back in the ass's. Because fashion has always reflected its moment in history one could say that clothes mocked their environment. More designers were finally getting the chance to travel. This gave them a chance to see other nations. Viewing other nations meant new colors, textures, materials and ideas. There was now more to fashion than the same old boring prints. What is special about the ass's clothing to me are the patterns and the colors. The ass's was bold and therefore the colors and shapes of the garments were bigger than life. Personally, it seems to me that living in the ass's meant that one could not be shy!This era in time was such a big influence on the world and trends can still be seen in present day. For example, â€Å"That ass's Show,† puts forth a great understanding of the prints, textures, and all around style of the ass's. Another show that from time to time will represent the ass's is â€Å"The Rachel Zoe Project. † Rachel Zoe is a fashion stylist, who herself every so often will show high wasted pants, big earrings, big hair, patterns, and styles from the ass's. All in all I believe that the seventies was an amazing and inspiring era. QUESTIONS: 1 . The people included in my photos are as followed: My nana, that, UncleGilbert, along with my mother and my father. 2. The time period in the photos are as followed: 1981 3. They lived in Tucson, AZ and the Nassau Bahamas 4. The Time of year these pictures were taken were: Summer (all photos except grandparent's), and winter. 5. Where the photographs taken for a special event: (dad) Pimp Air Show, (mom) Visiting Harbor Island, otherwise the others were not for special events. 6. The clothing w as not related to a particular profession of the time period. 7. The significant historical events happening at the time were: RonaldReagan was Just elected President of the United States, The American hostages was held in Iran, Interest rates was at 14% (very high). 8. The historical events are depicted in the clothing by 9. What is special to me about the clothing are the patterns and the colors, very little black. The clothes do inspire me, the whole 60-70 era inspires me. Yes its fashion. Fashion is not one particular trend or look. Fashion includes person style and the emotion behind the person, It's a statement. 10. The style is Mod and personal. 11. That ass's Show I believe uses this era as inspiration along with â€Å"The Rachel Zoe Project. â€Å"

Expert help with scholarship essay

Expert help with scholarship essay Scholarship essay You may be assigned to produce a scholarship essay in any subject. When writing this paper, you should share your experience and describe what you have learnt from it. If you need help with preparing this work, you should take the following logical steps: First, you should pay scrupulous attention to the topic of your paper Thus, you will understand how to write a scholarship essay properly and what to start with. It is important to have enough time for developing ideas about how to explore the issue fully. At this stage, you may even pick the topic you have not thought about before. The next step is to represent your achievements. You should explain why you think that you have done something significant. By the way, you should not write about your current accomplishments only. You may also describe the events that have happened in the past, but mean a lot to you. Thus, you will be able to produce an original paper with the right scholarship essay format. If you want to provide readers with valuable information about yourself, answer the following questions. They will help you understand how to start a scholarship essay.Do you possess any extraordinary skills that differ you from other applicants? How do you master them? What are your favorite movies or literary compositions? Have they changed your outlook? Describe the most complicated situation you have ever faced. Have you drawn valuable lessons from it? It is rather interesting to analyze such points in scholarship essays. Have you ever put considerable efforts to achieve the set goals? Have you ever failed in anything? How did you feel about it?When producing scholarship works, you may talk about the things you would like to possess most of all You may also describe the places where you would like to be with someone you admire. You should not be shy to describe your feelings when discussing unbelievable moments of your life. Remember to make a proper scholarship essay format. Below, there is a list of question you should consider when writing scholarship essays:What are your strong points? What can your friends tell about you? Imagine that your friends have to prepare a scholarship essay instead of you. What topic would they cover? Did you participate in extracurricular activities at high school? Why? Which one did you like the most?Students may also talk about their aspirations and future plans in their scholarships essays. Can you imagine yourself in twenty years? Will you have achieved your goals by that time? If you follow the afore-mentioned scholarship essay tips, you will write an outstanding paper.