Experiement to test for anions and cations Essay Example

Experiement to test for anions and cations Paper The aim of the experiment is to test an unknown substance with a variety of experimental methods, by doing this the identity of the substance will be known. The two types of different testing methods will be anions and cations. Cations are positively charged ions; this is because the atom looses an electron during a reaction, therefore having fewer electrons than protons. Anions are negatively charged ions, as the atom gains an electron during a reaction, therefore having more electrons than protons. An ion is an atom or molecule that either has gained or lost either one or more electrons, resulting in a positive or negative charge. The concept of atoms loosing or gaining electrons is known as ionic bonding. Meaning that when an atom of a single element offers electrons to atoms of another element a bond is formed. By observing any chemical changes in the experiment (for example, colour change, precipitate formation or expelling of gas), it should be easy to identify the unknown substance. A chemical change is when a new substance is produced for example the burning of magnesium metal in oxygen to produce magnesium oxide. It is an irreversible reaction, meaning that it is impossible to reverse the reaction back to how it originally was. Hypothesis It is to be expected that it will be possible to identify each unknown cation and anion by various testing methods. Safety assessment Goggles Should be worn to prevent any spillages coming into contact with the eyes Lab coat Should be worn to prevent any spillages on clothes. Glass ware We will write a custom essay sample on Experiement to test for anions and cations specifically for you for only $16.38 $13.9/page Order now We will write a custom essay sample on Experiement to test for anions and cations specifically for you FOR ONLY $16.38 $13.9/page Hire Writer We will write a custom essay sample on Experiement to test for anions and cations specifically for you FOR ONLY $16.38 $13.9/page Hire Writer Correct procedures to be followed for cleaning up, if any breakages occur. Liquids Acids being used in experiment, ALL are corrosive and SOME give off pungent fumes. Correct procedures must be followed if any spillages occur. All liquids, when finished should be diluted and disposed off down the sink, unless told otherwise. Gloves should be worn, with both gloves and hands being thoroughly washed when finished with the experiment. Fume cupboard Should be switched on to provide ventilation for any toxic/pungent fumes. Method Testing for cations (Substance I) A small spatula of substance I was added to a test tube, along with distilled water filling half of the test tube. 2. Using a Bunsen burner the test tube was placed into a blue flame to help it dissolve, and was then allowed to cool. 3. A clean test tube was taken and 1/3 of the solution was added to it, along with 5 drops of dilute sodium hydroxide. 4. No precipitate was formed, so the test tube was placed back into the Bunsen flame, with a piece of moist litmus paper placed over the top of the tube (ensuring that it didnt touch) 5. The paper turned from red to blue, indicating that substance I was ammonium. Testing for cations (Substance J) 1. A small spatula of substance I was added to a test tube, along with distilled water filling half of the test tube. 2. Using a Bunsen burner the test tube was placed into a blue flame to help it dissolve, and was then allowed to cool. 3. A clean test tube was taken and 1/3 of the solution was added to it, along with 5 drops of dilute sodium hydroxide. 4. No precipitate was formed, so the test tube was placed back into the Bunsen flame, with a piece of moist litmus paper placed over the top of the tube (ensuring that it didnt touch) 5. The paper had no change and remained red. 6. A flame test was then done using nichrome wire and a small sample of the solid. 7. The flame turned a yellow/orange colour and was identified as sodium. Testing for anions (Substance J) 1. A small spatula of substance J was added to a test tube, along with 2 dropfulls of dilute hydrochloric acid. 2. Using a Bunsen burner the test tube was placed into a blue flame and warmed gently. 3. No gas was given off, so three drops of barium chloride was added to the test tube. A white precipitate had formed, indicating that it was a sulphate. Testing for anions (Substance I) 1. A small spatula of substance I was added to a test tube, along with 2 dropfulls of dilute hydrochloric acid. 2. Using a Bunsen burner the test tube was placed into a blue flame and warmed gently. 3. No gas was given off, so three drops of barium chloride was added to the test tube. 4. No white precipitate had formed, and the solution was discarded with lots of water down the sink. 5. A fresh solution of substance I was made, with a small amount of water. An equal amount of dilute nitric acid was then added to the test tube, along with 3 drops of silver nitrate solution. 7. No precipitate was formed and the solution was again discarded with lots of water down the sink. 8. A fresh solution of substance I was made, with a small amount of water. 9. Using gloves, a few crystals of iron (II) sulphate were added to the test tube and concentrated sulphuric was added slowly and in drops down the side of the test tube, in a fume cupboard. 10. A brown ring had formed between the two liquids and the substance was identified as a nitrate.

Karma And Samsara Essays - Shabda, Reincarnation, Karma In Hinduism

Karma And Samsara Essays - Shabda, Reincarnation, Karma In Hinduism Karma And Samsara The belief in Karma and Samsara form the basis for the Hindus religious worldview. It has been central to Hinduism for thousands of years, and as a result forms a major part in the philosophical thinking of many Hindus today. The ideas of Karma and Samsara are evident in almost all of the great Hindu scriptures, being touched on in the Vedas, but first properly introduced in the Upanishads. When the idea of Samsara was first introduced it led to a quest for liberation through the practice of austerity or meditation or both. To be released form this life the Hindus needed to wipe out the effects of their past actions or Karma. It is this set of beliefs that formed the background of many of Hindus religious movements and beliefs. Karma is the belief according to which a persons future life is determined by past and present actions. Every action, bodily, intellectual or ethical, good or bad, big or small will have its effect. Nothing other than the effects of earlier actions has determined the present state of affairs and nothing other than the present actions will determine the future circumstances. The law of Karma allows no room for chance or divine intervention as everything is inevitably determined by it. The Brhardaranyaka Upanisad simply sates By good actions one becomes good, by bad actions one becomes bad(4.4.5) (Koller 1982: 59). Intertwined with belief in Karma is the idea of Samsara, which is the cycle of repeated births and deaths that subjects an individual not merely to one death but to innumerable deaths (Koller 1982:9). Hindus believe that as a person dies the Atman (the unconscious, immaterial part of a human) carries the results of their good and bad actions (Karma) into their next existence. This previous Karma will determine what sort of position a Hindu will occupy in their new existence, for example, if a person in a low caste has been very good in their past existence they will be born into a higher caste in their next life. The ideas of Karma and Samsara have justified the unequal Caste system, which has been an integral part of Indian society for hundreds of years. At the time of the Rig Veda (the earliest Hindu scriptures around 1000 B.C.E) (Smart 1989: 60) the key concepts of Karma and Samsara had not actually been stated. However, it does mention that a persons conduct in this world determines his life after death. The brahmins (the religious leaders) stressed the importance of the sacred act of sacrificing which was supposed to have a bearing on mans fate in the next world, and consequently the Satapatha Brahmana 11.1.8,6, states that the Sacrifice becomes the self of the sacrificer in the next world(Stutley 1985: 23). So, even at this early stage of Hinduism, the idea of Karma played an important role in the Hindus worldview. It was not until the Upanishads (the principal ones dating from 800-400B.C.E) (Smart 1989:49) that we first meet with the doctrines of Karma and Samsara. The Upanishads are concerned essentially with the meaning of the sacrificial rites, and come to the conclusion that knowledge in the true reality is the key rather than expertise in rituals like the Rig Vedas were. In the process they introduce profound metaphysical and religious ideas, such as Karma and Samsara. The Chandogya Upanisad sums up the ideas of Karma and Samsara those who are of pleasant conduct here the prospect is indeed that they will enter a pleasant womb, either the womb of a Kshatriya or the womb of a Vaisya (high Indian Castes). But those who are of a striking conduct here the prospect is indeed, that, they will enter the womb of a dog, or the womb of a swine, or the womb of an outcast(Lipner 1994: 45). The central concept in the Upanishads is that of Brahman. Brahman is the highest truth, the eternal being on which all other beings depend on. Brahman is the same as the atman, in other words, that ultimate being out there, is the same as that eternal something within you. The goal for many Hindus became at this time to gain Moksha (release from Samsara) which

Accounting methods of Asset Management Essay Example | Topics and Well Written Essays - 500 words

Accounting methods of Asset Management - Essay Example 2. The are many ways the long term assets can be presented in the balance sheet per reference to AASB 1010 and AASB 1041. AASB 38 has recently been replaced by AASB 1041. AASB 1010 and AASB 1041 speaks of new ways of presenting the long term assets like buildings, equipment, plant, etc. usually with concentration on presenting them using the fair value1. Comparison of the various benchmarking methods is enumerated below:4) Revalued at Replacement Cost - Buying a new item to replace damaged or outmoded equipments etc. Due to the continuous rise of inflationary goods and services, replacement cost has a higher probability of going up. 3. There are other parameters for generating value added when what is being benchmarked is not in goods production but involved actively in the government health department, service company, local council, etc.For local government health departments and councils , prompt delivery of health programs and services, without the usual redundant application forms, is highly recommended. Doctors track patients and refer them to specialists, when needed. Most sponsors and charitable organizations will donate medicines and other related health and economic needs to poor patients. Doctors may share patients' information with other health workers so there is lesser medical history interview time resulting in public health being handled faster.

Anemia Essay Example | Topics and Well Written Essays - 250 words - 1

Anemia - Essay Example The body may also fail to generate red blood cells to lead to the shortage in the body. Alternatively, the rate of degeneration of red blood cells may be higher than the rate of regeneration to identify shortage into anemia. Anemia also exists in different forms and examples are â€Å"iron deficiency anemia,† â€Å"vitamin deficiency anemia,† â€Å"anemia caused by underlying diseases,† and anemia that results from hereditary diseases (Women’s Health, 2012, p. 1). Symptoms exist that indicate possible existence of anemia and examples include â€Å"fatigue, weakness, dizziness, headache, low body temperature, pale skin, and shortness of breath† (Women’s Health, 2012, p. 1). Existing tests for the condition are limited to physical examination on the symptoms and treatments such as blood transfusion, suppression of the immune system, facilitated generation of red blood cells, and consumption of necessary supplements exist. The treatments focus o n each cause of the condition. In severe conditions, anemia can lead to cardiac arrest (Chem,

Invictus Response Paper Essay Example | Topics and Well Written Essays - 750 words

Invictus Response Paper - Essay Example I knew a great deal about the man and personally regard him as one of my several role models. Not only did the man spend 27 years in prison for being sentenced as a result of standing up for his people through his political activities and his believes but his resolve was so firm that he later became one of South Africa’s most beloved Presidents in the year 1994. One thing that is undeniable throughout the movie is the open admiration and respect in the hearts of the viewers for Nelson Mendela. His tact, his firm determination for his anti-apartheid cause and his true desire to unify his country wins the hearts of the viewers and dominates every aspect of the film. For me this film is focused stringently on Nelson Mandela and for most of the part I believe it is a great depiction of the man. Invictus spins around a web of celebration for the political leader as a sage. His wisdom and insights surpass not just that of his associates but he is shown as someone who has the ability to be autocratic in the gentlest manner, guiding his country from the midst of a chaos resulting from racial segregation with a firm grasp. This can be seen in the way Mandela not only realizes the reason for his nation’s disunity was apartheid but he decides to step forward and do something about it. Of the numerous qualities of Nelson Mandela, his determination and resolve are key highlighting characteristics that research highlights. Similarly in the movie, despite having a limited knowledge of sport, the viewed the South African rugby team as a tool to unify the country by participating in the 1995 World Cup Championship and gathering all his people under one flag regardless of their differences. It was a wise tactical move, one born not for the intent to entertain but for the underlying genius to move a nation into one. Invictus manages to shift focus from portraying the life of Nelson Mandela not during his years in prison and concluding with his release but depicts th e immediately inspiring struggle of the genius and his breathtaking act of leadership in the course of his first year as President. It shows the ability of the man to unite a scarred, fractious country through sports and as a result become the real champion. Invictus is accurate in showing how the defensive Afrikaner were won over by the Nelson Mandela’s endorsement of what they perceived was their sport, and gradually succumbed to the man’s charm. Furthermore the collaboration which views between Mandela and Pienaar the rugby team captain was a risky move which was a result of remarkable vision and courage. It could have easily be viewed as a symbol of betrayal by the black voters who had elected him and supporting the rugby team could have easily backfired as in the minds of his many supports it seemed to qualify as a symbol of apartheid. Keeping this in mind any average political leader might have simply disbanded the team in order to retain the favor of his support ers. However as seen in Invictus the true genius of the man lied in his ability to fight the odds and recognize that the rugby team which was a symbol of division as well as hatred for the masses could be transformed into an effective instrument of national unity. His thoughts can be accurately seen from a quote in Invictus "The rainbow nation starts here. Reconciliation starts here. Forgiveness starts here" (The guardian, 2010). Nelson Mendela’

Artificial Insemination in Swine

Artificial Insemination in Swine Introduction The use of artificial insemination (AI) increased in these last years because it offers several advantages over natural mating. New genetics can be introduced into a herd with decreased health risks. The semen that is collected from the boar can be diluted in a semen extender and with one ejaculation multiple insemination doses can be created and can be used to breed several sows and gilts. This allows more extensive use of genetically superior boars, increasing the rate of genetic improvement within a herd. On farms employing artificial insemination few boars are needed, and as a consequence, feed, labour and housing costs are reduced. The major processes of AI are: semen collection, evaluation, and processing; detection of oestrus; and insemination. Reproductive physiology of female swine For successful artificial insemination, heat detection of the female swine is very important. Oestrus begins with the pituitary gland, which is a gland situated just below the brain. The pituitary gland secretes hormones into the bloodstream such as the luteinizing hormone (LH) and the follicle stimulating hormone (FSH), which are called gonadotropins. In immature gilts gonadotropin secretion is low, but at 6 to 8 months of age, when there is the 1st oestrus it increases dramatically. During the 2 to 3 day period just prior to oestrus, the increase of LH and FSH cause the follicles on each of the two ovaries to grow rapidly. The follicles secrete increased levels of estradiol, which is a hormone into the blood that causes changes in behaviour and physiology of the animal. These changes are associated with the oestrus. Each follicle contains an ovum. When the ovum is released and fertilised by a sperm cell, it develops into an embryo. The increase of estradiol concentration in the blood reaches a threshold which triggers a large release of LH from the pituitary gland around the onset of oestrus. The release of ova from the follicles into the oviducts is stimulated by the LH. On average, ovulation occurs 40 hours after the onset of oestrus. Fertilization of the ova by the sperm cells occurs in the oviducts, the tubes between the ovaries and the horns of the uterus, and then the fertilised egg moves to the uterus. The sites on the ovaries from which ova are released, then form structures that are called corpora lutea. These corpora lutea secrete the hormone progesterone into the blood. During the luteal phase of the oestrus cycle, which is approximately between day 4 and day 16, progesterone inhibits the secretion of LH and FSH from the pituitary gland, inhibiting follicular growth. When the ova are not fertilised during oestrus or embryos do not implant in the uterus, around day 16, the uterus starts t secrete the hormone prostaglandin-F2o into the blood. This hormone causes the falling off or death of the corpora lutea. This causes the progesterone level to decline and this allows the increase of LH and FSH levels, follicle growth, and the return of oestrus. In a female swine, oestrus occurs every 18 to 22 days, unless the cycle is interrupted by pregnancy, lactation, poor nutrition, disease, etc. If fertilisation occurs and pregnancy is initiated, the prostaglandin-F2o is not released in the blood stream. The corpora lutea are maintained and secrete high levels of progesterone into the blood stream throughout gestation. Progesterone is essential in pregnancy, as it inhibits follicular growth and uterine contractions. Around day 114 of gestation, the uterus releases a large amount of prostaglandin-F2o into the blood, and this causes the corpora lutea to regress. The progesterone level is then decreased, uterine contractions commence and the foetuses are expelled. During lactation, when the pigs are sucking from the sow, LH and FSH are not secreted. When the suckling are weaned, a stimulus allows the secretion of gonadotropin to increase and the follicles grow rapidly and there is the corresponding rise in the circulating levels of estradiol. The sows return in oestrus in seven days after weaning and estradiol elicits the surge of LH, causing ovulation. Detecting oestrus The detection of oestrus is very important for successful artificial insemination. The oestrus duration is variable, but the average is 38 hours in gilts and 53 hours for sows. With the high concentrations of estradiol several sign can show that the sow or gilt is approaching or is in oestrus. These signs are: a red, swollen vulva and enlarged clitoris, mucous discharge from the vulva, nervous and restless behaviour, moving back and forth along pen partitions, frequent urination, increased vocalisation, decreased appetite, mounting other females and/or standing to be mounted by other females, elevation of ears, locking knees, and elevating the back. The best indicator that female swine are in oestrus and ready to be mated is the immobilisation response. When in oestrus they exhibit the immobilisation response as a reaction to a combination of visual, auditory, olfactory and tactile stimuli originating from the boar. It is important to put a mature boar in contact with the female swine that are being checked for oestrus. The females should be checked at least twice a day, with 12 hours interval in between for more accurate determinations. When checking for oestrus, the female should be exposed to a boar for several minutes and observed closely for several signs. If the female re checked in the morning, this should be done before or at least one hour after feeding. Considerable energy expenditure is required for maintaining the immobilization response. If a gilt or sow that is in oestrus becomes fatigued, it may become unresponsive to boar exposure and not resume an immobilisation response for several hours. During periods when not checking for oestrus, the boar should be kept away from the females, because this greatly increases the likelihood that sows and gilts in oestrus will display the immobilisation response when exposed to the boar during the oestrus check. The boar exposure during oestrus checking should be restricted to small group of females. When the sows and gilts are housed in crates, a boar should be moved in the front of the females, while a second herdsman applies back pressure. If the female is in oestrus it move forward and assume immobilisation response and when pressure is applied to the back it will push back. This is an effective method of detecting oestrus. Inseminating females Disposable AI equipment should be used and catheters should only be used ones, so different equipment is used on different female swine to protect plant health. Before inseminating, the vulva should be cleaned with a paper towel and the tip of the catheter should be coated with a non-spermicidal lubricant. The lips of the vulva should be spread and the breeding catheter inserted. The catheter should be angled slightly upwards while moved through the reproductive tract. This helps prevent entry into the urethra, which is the tube leading to the bladder. After wards the catheter should be slid gently through the vagina until the operator feels resistance. The resistance indicates that the catheter has reached the cervix. With a spirette-type catheter the instrument should be turned counter-clockwise until it locks into the cervix. Then to remove the spirette, it should be turned clockwise while gently pulled outwards. With a foam-tipped catheter, firm forward pressure should be applied to the catheter until the bulbous tip is locked into the cervix, and to remove the bulbous catheter tip, it should be pulled outwards gently. After the semen and extender is mixed gently, the semen bottle, tube, or bag should be connected to the open end of the catheter. The semen is dispensed by gently squeezing the container over a three to five minute period, taking care to avoid excessive back flow of the extended semen out of the vulva. The tip of the catheter may be blocked against cervical tissues occasionally, blocking the flow of the semen, and if this happens the catheter should be repositioned by turning it. The insemination is easier if the female swine is exhibiting the immobilisation response, although it is not necessary. If a boar is placed in an adjacent pen, it can facilitate AI, but on the other hand, immobilisation response requires considerable energy expenditure and the female may become fatigued. When there is a large number of sows to be bred, some of them may become refractory to the boar stimuli prior to artificial insemination. When the boar is present during artificial insemination, the sows pituitary gland releases oxytocin into the bloodstream, which a protein hormone. It stimulates muscles contractions of the uterus and oviducts, and these contractions cause the semen to be drawn into the reproductive tract during AI. This is also known as self insemination. If the AI technician applies firm back pressure and rubs the flank or udder of the sow during insemination, he will facilitate the self insemination. Timing of insemination Accurate oestrus detection is the success of artificial insemination. Timing of insemination is normally based on the time when oestrus is first detected. Insemination should be done prior to ovulation, i.e. maximum 24 hours before ovulation in sows and maximum of 12 hours before ovulation in gilts. Inseminating twice during oestrus increases the likelihood that one will occur during the optimum time. If female swine are in standing heat for 3 days, a third mating should be beneficial. The females that are not in oestrus should not be inseminated because reproductive performance will be adversely affected.

Othello and Film “O”

Despite the shift in time and place, the two texts Shakespeare’s Othello and Tim Blake Nelson’s film ‘O’ explores timeless ideas such as jealousy and illusion versus reality. These ideas transcend through time and still remain constant in modern society. To achieve universal themes represented in Othello, Tim Blake Nelson uses a variety of different techniques such as camera angles and Verdi’s Opera music to effectively achieve such themes and values in his film to suit his 21st century adolescent audiences.On the other hand, Shakespeare have originated the plot by using literacy devices such as imagery, soliloquies and asides to suit his contemporary Elizabethan audience. In Shakespeare’s Othello, the theme jealousy is evident throughout the play. The composer uses techniques such as imagery and characterisation to convey this idea effectively. The protagonist Othello was characterised as a general, a man who has high social standards, ration al, logical and a military man who is known as the â€Å"Valiant† and â€Å"more fail than black†.This has shaped a strong comparison towards the end of the play when the Moor who is perplexed and enraged by jealousy for Desdemona, calling her â€Å"Impudent Strumpet! †. Othello is a man of reason, and it is not until the proof of the handkerchief does the audience see his decline into distrust. With Iago’s understanding of human nature and their characteristics, Iago was able to turn their honesty against themselves. Othello’s mind became so corrupted by Iago that Othello got lose of his mind â€Å"Lie with her? Lie on her?.. Handkerchief! – Oh devil!† that the once calm and honourable figure was unfortunately lost to the â€Å"green eyed monster which doth mock the meat it feeds on†.Shakespeare uses imagery to describe jealousy as a monster, effectively highlighted the destructive nature of jealousy. In a different form the f ilm â€Å"O† also represents the theme of jealousy effectively. Tim Blake Nelson conveys jealousy effectively through techniques such as super imposition, a variety of non diegetic (Verdi’s opera representing tragedy at the opening scene of doves) and a range of different angled camera shots to convey his theme of jealousy.The composer utilizes the popular medium of cinema as well as the use of colloquial language, slangs and profanities to suit his contemporary adolescent audiences. Oden having similar characteristics to Othello is naive and easily trusting who fall into the deception of Hugo. The use of non diegetic sounds as well as superimposition was imposed to symbolise jealousy. Tim Blake Nelson used such technique in the â€Å"willow† scene, the lyrics â€Å"Even the sun goes down Heroes eventually die† are all forecasts of the tragic death of Desi.The sex scene when Oden looks into the mirror and saw Mike’s face looking straight back at hi m smiling â€Å"evilly† gives the audience a look into Oden’s mind of jealousy and an indication of corruption of Oden’s mind. Iago is a success model in reflecting the theme â€Å"illusion verses reality†. Shakespeare employs techniques such as soliloquies and dramatic irony to effectively present the theme to his audience. In the beginning of the play, audiences are quickly known the â€Å"devil† of the story is Iago. Deception than arises in Othello when the protagonist constantly referred Iago as â€Å"the honest Iago†.However the audience is aware that Iago is indeed not honest at all, from quotes â€Å"I am not what I am† and â€Å"In following him I follow but myself† is an indication of the double-faced Iago. Iago is seen as the most loyal friend to Othello, Iago helped Othello to â€Å"prove† the unfaithfulness of Desdemona and evidenced Othello being cuckold by Desdemona. The effective use of asides creates dra matic irony for the audiences as Othello’s naivety and trust in Iago is evident. These scenes effectively conveys the theme of illusion vs reality as Iago creates the â€Å"illusion† of being Othello’s honest friend.In comparison to â€Å"O†, Nelson also used characterisation and dramatic irony in shaping the theme illusion verses reality. However techniques differs greatly between the two text in order to suit its audiences. In â€Å"O†, Iago was being further conveyed through the character Hugo, who is a teenager boy and craves for everyone’s attention. â€Å"All my life, I always wanted to fly† is a voice over at both opening and closing of the movie indicating Hugo wanting to success and will be able to receive attention from his father and friends. Dramatic irony has been effectively used to engage audiences to reflect upon the nature of illusion versus reality.The conversation between Michael and Hugo, when Michael asked Hugo fo r advices about reputation. Hugo replied quickly â€Å"Like who gives a fuck about reputation, the only person you have to answer is yourself†, this quote is not only an indication of Hugo being a true Machiavellian villain, but it also highlights the theme of reality vs illusion. Shakespeare focused on values in integrity and reputation however to suit the 21st audiences Tim Blake Nelson have focused more on popularity. Hugo appeared to be a trustworthy friend in the film to both Oden and Michael and this is a representation of illusion verses reality.Tim Blake Nelson effectively presents this thought through the use of dramatic irony and mis en scene throughout the movie similarly to Shakespeare’s Othello. Despite the time and space, both composer explored the basic humanity by using similar techniques however it differs greatly to suit its contemporary audiences. Shakespeare’s â€Å"Othello† used literacy devices such as dramatic irony and soliloquies instead Tim Blake Nelson structured his film â€Å"O† using popular medium of cinema along with pop and opera music to create his universal themes.