Write a research paper about oil price related to people's daily life

Write a about oil price related to people's daily life - Research Paper Example The reduction affected the earnings for OPEC, which in turn reduced its supply to maintain a certain price. Shortage of oil in turn increased its prices in the consuming countries leading to high prices for the basic commodities. The fall in oil prices in year 2014 will affect large economies such as the US, which have large borrowings with expectations that oil prices may go up. Anything that affects the economy of a nation affects the lives of the consumers who the country’s citizens. Rising oil prices in the international markets lead to increased prices of oil products such as cooking fuels and petroleum products. High prices of petroleum products such as petrol and diesel lead increase in the transportation costs for consumers goods forcing the sellers to increase their prices as well. In fact, almost all the commodities used by consumers today depend on the price of oil especially the industrial manufactured goods. Many industries use oil products to run their machines a nd any price fluctuation and increase in price is passed to the consumer. Oil prices affect the prices of consumer goods in the world because they raise the production cost for manufactured basic commodities. Many medical products originate from petroleum, which means that any change in the oil prices will affect the prices of medical products and finally the health of consumers. Many may not be aware that many products they use for medical purposes come from oil products such as petroleum. Without the product, loss of lives will be a common phenomenon due to lack of important medical devices and the high cost of the available ones. Some the examples of the devices from petroleum products are vaporizers, gloves, stethoscope, anesthetic, heart valves, artificial limbs and many more (Horsnell & Mabro, 1993). Hospitals rely on the petroleum product for their daily operations without which diagnosis and treatment would be impossible. Other health items at home use

Criminology Assignment Example | Topics and Well Written Essays - 1750 words - 1

Criminology - Assignment Example It is indicated that personality and genetics of a person have link with social influences like family and peer environment. The impact of parental role is also explained by psychological theories that state neglect or abuse from parents can also lead to criminal tendencies. Therefore, where biological theories stress upon genetic and brain compositions, other theories look at external factors like social and environmental impact (Theories of the Causes of Crime, 2009). 2. It was during the 19th century that physical appearance was given importance regarding studying criminal aggressiveness in individuals. Collins (1999) has explored the core subject of physiognomy which states that unaltered body structures can reflect the characteristic of a person. In the field of physiognomy it is considered that physical features like distance between two eyes or structure of the forehead can tell about a person’s strengths like intelligence and honesty (Collins, 1999, p.251). It was the 19th century Italian criminologist, Cesare Lombroso who had observed resemblance between the skulls of a notorious criminal and those belonging to lower races. He coined the term â€Å"born criminals† and attributed their criminology to physical features like â€Å"drooping eyes, large ears, protruding jaw, flat nose† (Valla et al., 2011, p.70). 3. During the 1970s and 1980s, various studies have demonstrated that children born from parents who have been imprisoned carry greater potential of becoming criminals during adult years even if they are brought up by law-abiding foster parents. From these adoptive studies, it has been concluded that genetic impact on criminal behavior is significant irrespective of gender although females are more subjected to individual genetic risk than the males. Moreover, it has been observed that parents with records of petty

Cosmetic Surgery Essay Example for Free

Cosmetic Surgery Essay â€Å"I wish I had a twin, so I could know what Id look like without cosmetic surgery† a quote by Joan Rivers. She is an American famous person who has done so many cosmetic surgeries. Rivers most likely said this quote because she regretted about all of the cosmetic surgeries that she had. Cosmetic Surgery is a phenomenon that has increased over the past few years and became popular in everywhere on the world. Moreover, many people have been thinking of doing it because it sounds interesting that people can change how they look likes or to improve a normal part of their body appearance. One of the biggest reasons of why cosmetic surgery is so popular is that people are striving to become physically perfect. However, those people are not aware of the risks that can result from these kinds of surgeries. Cosmetic surgeries affect the emotions of people who go under the knife and make them addicted to it. Also, it is dangerous and isn’t worth the risk. Patients will possibly suffer from depression, and encounter emotional difficulties that are hard to overcome after cosmetic surgery. This psychological pressure lasts for a long time and sometimes forever. For example, Olesen mentions that one of the disadvantages of cosmetic surgery is including depression (3). Also, Iverson says that there are studies that say cosmetic surgery cause undesirable feeling for patient (1). As for my own experience, a year and half ago my sister have done a cosmetic surgery in her nose. She didn’t like how she looks like, so she felt so bad about herself and didn’t want to see anyone of her friends. So, my father had to take her to psychiatrist to make her feel better. Thus, these examples indicate that cosmetic surgeries cause the patient so much depression and that is really a big problem that might affect the patient life. Because the patient unused to the new look or difference, the patient might stay secluded and stop socializing with friends and people for long time. Also, the bandaging wouldnt take off before three months. Furthermore, the patient cannot judge the result before six months until it takes its natural form. So, between the periods after the surgery until the result takes its natural form the patient would stay long time without knowing how the result looks like. And that is going to let the patient in a state of depression because prevent the patient to communicate with people . In some cases the result fails to improve and the appearance looks worse than before the surgery. Under this circumstance, the patient goes to another level of emotional effects of depression to the feeling of isolation forever. Thus, it would be hard for the patient to adjust whether he/she likes the result or not because the patient has to undergo days or months of healing process. Sometimes, that wound take forever to heal. In sum, cosmetic surgeries certainly let the patients feel depressed and affect their emotions. Although cosmetic surgery causes a lot of emotional depression, this is not the only reason. One very serious addiction that is often overlooked is cosmetic surgery addiction. Unlike drug addicts who suffer from chemical addiction, cosmetic surgery addicts experience mental obsession to alter their bodies and faces. For instance, Sciarretto says Michael Jackson’s mother admitted that he was addicted to cosmetic surgery (1). Another example, Dr.  Samuels states, â€Å"After one surgery, addicts will find a reason to have a second, then a third and so on in their quest for perfection. The results they are after are unattainable†(4). In addition, Frankr states, â€Å"plastic surgery shouldnt be undergone because it can lead to addiction†(3). Hence, these three examples show cosmetic surgery is a serious problem that can really make patient to become addicted to it. Many of patients begin their journey simply wanting to correct a few specific anatomical issues, but progress to addiction after completing their initial surgical desires. When the patient does one cosmetic surgery and like the result of it, he or she would find a reason to do it again to look better. Similarly, if the patient doesn’t like the surgery result also would do it again until to get satisfied with the results of the surgery. Thus, in both cases whether the patient like the result or not would get addicted. In addition, once the first surgical operation was already done, second, third, fourth, and even more is easy to follow. The patients are always looking for perfection and would never satisfy with their looks because this is the nature of human. As has been noted, Michael Jackson is an evidence to prove this theory. Michael got addicted and he transforms his appearance hundred and eighty degrees. So, cosmetic surgery is grave problem that patient should be aware of before doing it because it have the ability to let the patient obsessed about it. As the case with any kind of surgery, cosmetic surgery does involve risk that in some cases death. In addition, isn’t worth the risk because it could take person’s life forever for unnecessarily reason. For example, Frankr says, â€Å"Just like any surgery, plastic surgery can be dangerous. They involve anesthesia, wound healing and other risks†(2). Another example, John writes an article about a woman named Kathleen Kelly Cregan who died while she was having a cosmetic surgery. So, these two examples show that cosmetic surgeries are not easy and carry risks that might lead to death. A risk that should be taken into consideration is that when cosmetic surgery is undergone and uses anesthesia. Anesthesia is put on a patient to sleep, and to numb the body so the patient won’t feel pain during the surgery. Even though anesthesia prevents pain during the surgery, it has its risks. There is no guarantee that the patient will wake up from the anesthesia, patient can fall into a coma, if not given the right amount of it and if not put in the right place. Furthermore, there is no surgeon who can guarantee that the surgery would succeed. There are always risks of things going amiss. I guarantee that if Cregan knew she would die because of a cosmetic surgery she wouldn’t do it because she could live without it. Doing cosmetic surgery isn’t worth the risk because it’s unimportant surgery that many people could live a happy life without it. Also, it carries risks that could take patient life forever. Cosmetic surgery being so popular and the idea of it sound good. However, many people are not aware of the side affects that can bring into their life. Additionally, it could turn patients life into depressed. Patients always want to perfect in their appearance, which is impossible to reach because this is the nature of human. Cosmetic surgeries have so many disadvantages and I just mentioned few of them.

Different Reactions From The Brine Shrimp Biology Essay

Different Reactions From The Brine Shrimp Biology Essay The objective of the Pharmacology Lab is to find the lethal chemical(s) or the LD50 relevant to a certain genus. In order for a chemical to be considered the LD50, 50% of the population of the organism present in a container must die. A total of three trials and four tests are completed to determine whether or not the chemical has the ability to kill the brine shrimp. The three trials contain 5mL of the chemical in each container, while the four tests have different amounts of the chemical in each container. The amount of water used for both the trials and tests remain constant at 40mL. Once the correct amount of the required substances and brine shrimp are placed into their respective and labeled containers for both trials and tests, they are then moved under a desk light. For the next duration of time, the death rate of the brine shrimp and the physical or behavioral changes visible are observed and recorded. After performing the experiments, the data shows that a great number of t hese selected regular household items have deadly chemicals in them that can kill other living organisms if given the right amount of dosage, including humans. Out of all five products, the LD50 was only found in soda and hydrogen peroxide. Lemon juice, nail polish remover, and hand sanitizer were not considered the LD50 because the death rate percentage was higher than 50%. This research provides a better understanding of how toxic household chemicals are. Products that were created for consuming such as the Lemon Juice and Soda were found to instantly and over a certain amount of time, kill the brine shrimp once in contact. II. Introduction In this experiment, one of the main purposes is to find the LD50 of several household chemicals on Brine Shrimp. LD means lethal dose of a certain product. The LD50 formula gives the estimate of deaths of half a population when receiving the molarity of each chemical. A possible solution to this problem is to perform and experiment where an organism is tested on with different types of chemicals for the death rate. Brine shrimp, the genus used, are aquatic crustaceans that can be grown by adding water and brine shrimp eggs into a tank. This process takes approximately two days. Brine shrimp lives in salt water, but can also survive in regular water for 24 hours. Completing this experiment determines whether they can survive a certain about of chemicals in different time intervals. This lab contains five different chemicals including: nail polish remover, hydrogen peroxide, lemon juice, hand sanitizer, and lemon soda. These household chemicals are tested as the positive controls, whil e the negative control is water. With five positive controls, there would be different results from each chemical. As the experiment takes place through four tests; each containing 3 trials; the observation of the deaths of brine shrimp demonstrates the amount of time they can survive in new obscure habitats. The test of each chemical shows whether there are traces of deadly substances, which could help find the measures of toxicity in each chemical. Testing the toxicity by molarity and time shows the maximum amount of toxicity that humans can handle to be able to survive. The experiment is an example of how living organisms react to chemicals. The brine shrimp will play the role of the organism. However, different organisms will have different reactions depending on their adaptations and physical traits. As the brine shrimp take in the chemicals, the inability to survive increases. The death of the aquatic crustaceans shows how toxic harmless household chemicals can truly be.This lab will explore the ingredients from the five chemicals used. The observations of the LD50 will determine which chemical is deadlier than the others, causing the public to be more aware of these fatal factors. III. Methods: The brine shrimp are grown by adding water and brine shrimp eggs into a tank. Brine shrimp takes two days to mature enough to be experimented on. The lethal chemical(s) or the LD50 are found by placing different substances mixed with water into containers with nine brine shrimp. Through a series of tests and trials, the lethal chemicals are distinguished. A total of three trials and four tests are completed to determine whether or not the chemical has the ability to kill the brine shrimp. The three trials contain 5ml of the chemical in each container, while the four tests have different amounts of the chemical in each container; (5ml, 10ml, 15ml, and 20ml). The amount of water used for both the trials and tests remain constant at 40ml. Once the correct amount of the required substances the brine shrimp are placed into their labeled containers for both trials and tests. Next, the Brine shrimp are moved under a desk light because they are attracted to any form of light. The death rate and physical or behavioral changes of the brine shrimp are observed and recorded in tests with intervals of 10-minute trials and 5-30 minutes. This lab consists of four tests and three trials for five different chemicals to find the LD50. The positive controls include: Super Chill Lemon Lime soda, hydrogen peroxide, House Recipe lemon juice, 2.2 oz. of Assured Aloe Vera scented hand sanitizer and 2.2 oz. of ONYX Professional lavender scented nail polish remover, while the negative control is water throughout the entire experiment. For each test, there are three trials performed beforehand. Twenty seven brine shrimp are needed for the trials. For each of the three trials, nine brine shrimp are obtained from the twenty seven. Then, 40mL of distilled water is added to the brine shrimp container through pipettes and graduated cylinders; the total volume of water for each trial is 40mL in order to maintain consistency. From each chemical, 5mL are added into the labeled containers of the 40 mL distilled water. Once all substances are added, the containers are placed under direct light from a desk lamp because brine shrimp are att racted to light. Through five tests after the three trials, various amounts of nail polish remover, hydrogen peroxide, lemon juice, hand sanitizer, and Sprite soda are added to its assigned containers. For each test, there will be four containers for the different amounts used of each chemical. The first container contains 5mL of the chemical while the other three containers will have an increase of 5mL from the prior container. This process will be done five times for the five chemicals used. The counts of deceased shrimp after each time interval are recorded over a course of 5 minutes to 30 minutes in percentages. Different reactions from the brine shrimp were recorded in the data table as well as pictures being taken. This procedure was used according to the outline given in order to achieve the objective of this lab. Given a certain the amount of time, three trials and four tests were used. In the procedure, several changes were included, instead of adding 40ml of water with the nine brine shrimp, 40ml of water was added to the desired chemical first to have enough time to collect the brine shrimp for the specific trial and test. IV. Data Data table for Trial: Peroxide (3 trials total) @ (5ml of chemical) PH: 7 Time interval Observations Deaths (%) Deaths (#) 10 mins move erratically; attracted to light; hitting against the cup 0% 0 10 mins move erratically, attracted to light 11% 1 10 mins move erratically, attracted to light 11% 1 Data table for Test: Peroxide 5mL Time Interval Observations Deaths (%) Deaths (#) 5 min has bubbles 0% 0 10 min has bubbles 0% 0 15 min has bubbles 22% 2 20 min has bubbles 22% 2 25 min has bubbles 33% 3 30 min has bubbles 33% 3 Data table for Test: Peroxide 10mL Time Interval Observations Deaths (%) Deaths (#) 5 min has bubbles 44% 4 10 min has bubbles 44% 4 15 min has bubbles 44% 4 20 min has bubbles 44% 4 25 min has bubbles 44% 4 30 min has bubbles 44% 4 Data table for Test: Peroxide 15mL Time Interval Observations Deaths (%) Deaths (#) 5 min has bubbles 33% 3 10 min has bubbles 44% 4 15 min has bubbles 44% 4 20 min has bubbles 55% 5 25 min has bubbles 55% 5 30 min has bubbles 55% 5 Data table for Test: Peroxide 20mL Time Interval Observations Deaths (%) Deaths (#) 5 min has bubbles 33% 3 10 min has bubbles 33% 3 15 min shrimp turn orange 44% 4 20 min has bubbles 55% 5 25 min has bubbles 55% 5 30 min has bubbles 55% 5 Data table for Trial: Nail Polish Remover (3 trials total) @ (5ml of chemical) PH: 7 Time interval Observations Deaths (%) Deaths (#) 10 mins hitting against the cup under the light 22% 2 10 mins hitting against the cup under the light 22% 2 10 mins hitting against the cup under the light 22% 2 Data table for Test: Nail Polish 5mL Time Interval Observations Deaths (%) Deaths (#) 5 min has bubbles 11% 1 10 min has bubbles 22% 2 15 min has bubbles 22% 2 20 min has bubbles 55% 5 25 min has bubbles 66% 6 30 min has bubbles 66% 6 Data table for Test: Nail Polish 10mL Time Interval Observations Deaths (%) Deaths (#) 5 min has bubbles 100% 9 10 min has bubbles 100% 9 15 min has bubbles 100% 9 20 min has bubbles 100% 9 25 min has bubbles 100% 9 30 min has bubbles 100% 9 Data table for Test: Nail Polish 15mL Time Interval Observations Deaths (%) Deaths (#) 5 min has bubbles 100% 9 10 min has bubbles 100% 9 15 min has bubbles 100% 9 20 min has bubbles 100% 9 25 min has bubbles 100% 9 30 min has bubbles 100% 9 Data table for Test: Nail Polish 20mL Time Interval Observations Deaths (%) Deaths (#) 5 min has bubbles 100% 9 10 min has bubbles 100% 9 -15 min has bubbles 100% 9 20 min has bubbles 100% 9 25 min has bubbles 100% 9 30 min has bubbles 100% 9 Data table for Trial: Lemon (3 trials total) @ (5ml of chemical) PH: 2 Time interval Observations Deaths (%) Deaths (#) 10 mins some floats 100% 9 10 mins transparent with some orange 100% 9 10 mins completely transparent 100% 9 Data table for Test: Lemon 5 mL Time Interval Observations Deaths (%) Deaths (#) 5 min completely transparent 100% 9 10 min completely transparent 100% 9 15 min completely transparent 100% 9 20 min completely transparent 100% 9 25 min completely transparent 100% 9 30 min completely transparent 100% 9 Data table for Test: Lemon 10mL Time Interval Observations Deaths (%) Deaths (#) 5 min completely transparent 100% 9 10 min completely transparent 100% 9 15 min completely transparent 100% 9 20 min completely transparent 100% 9 25 min completely transparent 100% 9 30 min completely transparent 100% 9 Data table for Test: Lemon 15mL Time Interval Observations Deaths (%) Deaths (#) 5 min completely transparent 100% 9 10 min completely transparent 100% 9 15 min completely transparent 100% 9 20 min completely transparent 100% 9 25 min completely transparent 100% 9 30 min completely transparent 100% 9 Data table for Test: Lemon 20mL Time Interval Observations Deaths (%) Deaths (#) 5 min completely transparent 100% 9 10 min completely transparent 100% 9 15 min completely transparent 100% 9 20 min completely transparent 100% 9 25 min completely transparent 100% 9 30 min completely transparent 100% 9 Data table for Trial: Hand Sanitizer (3 trials total) @ (5ml of chemical) PH: 7 Time interval Observations Deaths (%) Deaths (#) 10 mins shrimp turns orange 33% 3 10 mins all on the bottom 33% 3 10 mins against the wall 22% 2 Data table for Test: Hand Sanitizer 5 mL Time Interval Observations Deaths (%) Deaths (#) 5 min turns orange 66% 6 10 min turns orange 66% 6 15 min turns orange 77% 7 20 min turns orange 77% 7 25 min turns orange 100% 9 30 min turn orange 100% 9 Data table for Test: Hand Sanitizer- 10mL Time Interval Observations Deaths (%) Deaths (#) 5 min turns orange 22% 2 10 min turns orange 33% 3 15 min turns orange 55% 5 20 min turns orange 55% 5 25 min turns orange 88% 8 30 min turns orange 100% 9 Data table for Test:Hand Sanitizer- 15mL Time Interval Observations Deaths (%) Deaths (#) 5 min turns orange 44% 4 10 min turns orange 66% 6 15 min turns orange 66% 6 20 min turns orange 66% 6 25 min turns orange 77% 7 30 min turns orange 100% 9 Data table for Test: Hand Sanitizer- 20mL Time Interval Observations Deaths (%) Deaths (#) 5 min turns orange 88% 8 10 min turns orange 88% 8 15 min turns orange 100% 9 20 min turns orange 100% 9 25 min turns orange 100% 9 30 min turns orange 100% 9 Data table for Trial: soda (3 trials total) @ (5ml of chemical) PH: 7 Time interval Observations Deaths (%) Deaths (#) 10 mins bubbles 22% 2 10 mins some are orange 22% 2 10 mins some are orange 22% 2 Data table for Test: soda 5 mL Time Interval Observations Deaths (%) Deaths (#) 5 min bubbles 11% 1 10 min bubbles 11% 1 15 min bubbles 11% 1 20 min bubbles 11% 1 25 min bubbles 22% 2 30 min bubbles 22% 2 Data table for Test: soda 10mL Time Interval Observations Deaths (%) Deaths (#) 5 min bubbles 55% 5 10 min bubbles 55% 5 15 min bubbles 55% 5 20 min bubbles 55% 5 25 min bubbles 55% 5 30 min bubbles 55% 5 Data table for Test: soda- 15mL Time Interval Observations Deaths (%) Deaths (#) 5 min bubbles 44% 4 10 min bubbles 44% 4 15 min bubbles 55% 5 20 min bubbles 66% 6 25 min bubbles 66% 6 30 min bubbles 77% 7 Data table for Test: soda 20mL: Time Interval Observations Death (%) Deaths (#) 5 min bubbles 88% 8 10 min bubbles 88% 8 15 min bubbles 88% 8 20 min bubbles 88% 8 25 min bubbles 88% 8 30 min bubbles 88% 8 V. Analysis The LD50 for hydrogen peroxide is approximately 0.24 molars. Hydrogen peroxide has 3% Hydrogen Peroxide (Stabilized), Purpose First Aid Antiseptic/Oral Debriding Agent. Its Inactive Ingredient is Purified Water. Hydrogen peroxide is a deteriorizing agent that is commonly used as a hair bleach when diluted. An Oral debriding agent describes what the hydrogen peroxide can do. This means that the hydrogen peroxide when diulted in water can help heal minor mouth and gum irritation. Since all living organisms have an enzyme called peroxidase, it helps decompose low concentrations hydrogen peroxide into water and oxygen. . There is no LD50 for nail polish remover. Nail Polish remover has the ingredients: Acetone, aqua, denatonium benzoate, tocopheryl acetate, aloe barbadensis leaf juice, parfum(means perfume in french), Cl 45410(dye), Cl 60730(dye). Denatonium benzoate is a chemical compound known to prevent and discourage people from drinking harmful products. Tocopheryl acetate, also known as vitamin E acetate provides beneficial antioxidant effects. Aloe barbadensis leaf juice, also know as Aloe Vera is a plant. When consumed, it can help relieve irritable bowel syndrome and heartburn. Acetone is an organic compound that is a colorless and flammable liquid. Concluding that acetone is the lethal ingredient and causes the death of the brine shrimp when ingested, it will cause liver problems, which causes the liver to have a hard time breaking them down. Large intake of acetone can lead to unconsciousness and death. There was no LD50 for Lemon; the ingredients in the lemon juice packets include water, lemon juice concentrate, sodium benzoate, sodium bisulfite, and lemon oil. Sodium Benozoate is a type of salt often used a preservative because it works well at killing bacteria, yeast, and fungi. Sodium bisulfite is a food addictive. When in contact with chlorine bleach, it will release harmful fumes.The brine shrimp died within 20 minutes because of the sodium benzoate in the lemon juice packet, which is a type of salt mixed together with vitamin C causes a carcinogen substance called benzene. Benzene is a carcinogen because when exposed into the air, it can cause leukemia. Eating or drinking substances with high levels of benzene can cause vomiting, dizziness, sleepiness, and or death. It may not be lethal enough to kill humans yet, but having a high amount of the lemon juice packets can potentially kill a human or any living organism. There is no LD50 for Hand Sanitizer but the graph decreases and increases because there was a slight change in the number of brine shrimp needed in each container. The ingredients contained in this chemical are: water, triethanolamine, glycerin, propylene glycol, aloe barbadensis gel(another form of aloe vera), carbomer, fragrance, blue 1(dye), yellow 5(dye), and 62% ethyl alcohol. Triethanolamine is a chemical compound that occasionally causes contact allergy. Glycerin is a simple alcohol compound that is used as a sweetener and sometimes a preservative in food and beverages. Propylene glycol is an organic compound used in many applications such as a food addictive called E number 1520, moisturizer in medicine, and a solvent for food coloring. Carbomer is a synthetic polymer that forms an adhesive eye gel. 62% ethyl alcohol is a flammable liquid used as solvents and fuel. The brine shrimp died because of the 62% ethyl alcohol in the hand sanitizer, when consumed can cause death. Alt hough used in wine and any alcoholic drinks, the drinks only contain small concentrations of alcohol, legal enough to drink. The LD50 for Super chill lemon lime soda is approximately 0.19 molars. The ingredients in the soda are carbonated water, high fructose corn syrup, citric acid, natural flavors, potassium citrate and potassium benzoate. High frutose corn syrup is comprised of many corn syrups that has undergone enzymatic(enzymes that catalyze) process that converts glucose into frutose for desired sweetness. There have been health concerns about raising the risks of diabetes and cardiovascular disease. Citric acid is a weak organic acid that is a natural preservative and used to add a sour taste to food and soft drinks. Contact with dry citric acid can result in skin or eye irritation. potassium citrate is a food addictive and used to regulate acidity. It is also a potential health hazard when administered incorrectly. Elevated blood levels of potassium citrate can result in heart attacks and death. Potassium benzoate is a food preservative that inhibits the growth of yeast, mold, and some bacteria. T he reason why the brine shrimp died because of potassium citrate in the soft drink. Too much potassium citrate can cause irregular heartbeat and a risk of having a heart attack. Although there are potassium citrate pills sold in stores, they are only recommended if the person had been having a case of fatigue or muscle weakness. The kidney is responsible for eliminating excess potassium in the body. The molarity formula: iM1V1=1M2V2 was used to find the LD50 and true concentration of each chemical after all the substance has been added to container and totaled. The LD50 for Hydrogen Peroxide is 0.24 molars. The LD50 for Super Chill lemon lime soda is 0.19 molars. There are no LD50 for lemon, nail polish remover, and hand sanitizer because the deaths were higher than fifty percent. The standard deviation at 20 ml for Hydrogen Peroxide is approximately 0.833, for Nail Polish remover, lemon, hand sanitizer, and soda is 0. The chemicals included in this experiment are normally used in everyday use in the household. Chemicals such as peroxide are used to clean injuries or cuts. Hand sanitizer is used to clean 99.9% of bacteria on hands. Nail polish remover is used for getting the nail polish off of the fingernails. Lemon juice packets are used in making the dressing for a salad. The LD50 for Nail Polish remover is 1.159 g/kg for humans when digested. Unfortunately, the LD50 for the r est of chemicals are unavailable because they have only been conducted on rats and mice. Although the results of the data were both consistent and gradual in terms of death percentages, a few of the brine shrimp died before 5 minutes of data was recorded. This indicated that the brine shrimp could not live in the high toxicity levels on some of the chemicals used in this experimentation even with the addition of water. VI. Conclusion This lab is significant because the participants are able to discover the true dangers of certain household products such as hydrogen peroxide, soda, hand sanitizer, lemon juice, and nail polish remover. With everyday household chemicals, a personà ¢Ã¢â€š ¬Ã¢â€ž ¢s health can be affected, thus finding the LD50 will tell us how toxic a certain item is. The use of the LD50 is to study the amount of a chemical that will kill 50% of the tested animal, which will show us how dangerous a product can truly be. Some insights include the participants testing the dangers of à ¢Ã¢â€š ¬Ã…“harmlessà ¢Ã¢â€š ¬Ã‚  products. The lab offered similarities and an opportunity for a hands on experience of the procedures a toxicologist, like finding the cause and effects of poison. By using mathematical formulas like the molarity formula and the standard deviation formula, accurate and reliable data was collected to find the true concentration of the LD50 chemicals. For example, the data and calculat ions from these formulas show that one of the chemicals, Hydrogen Peroxide is the LD50 with a molarity of 0.24 molars. The data tables show that chemicals like the lemon juice, nail polish remover, and hand sanitizer are not the LD50. This is most likely due to the fact that these products contain amounts of citric acid and alcohol which results in death rates that are over 50%. In the trials and tests, many occurrences of errors and mistakes which could have affected the outcome of the results. In one of the hand sanitizer tests, 18mL was added into the mixture of substance instead of 20mL. Instead of counting the number of death at a certain time, some of the intervals were missed by a minute or two. This lab was not as accurate as expected because of the difficulties experienced during the beginning of the lab. For example, lotion was one of the chemicals to be tested on the brine shrimp prior to the lab. However, because the lotion was dense, it was difficult to mix with the wat er. Also, the color made it nearly impossible to see and count the brine shrimp. These errors could be easily avoided in the future by double checking the amount of a substance being added, keeping track of time, and using transparent products. For a clearer understanding several alterations of a procedure outline, being careful with the amount of measurements and constant data collection could be applied in the future.

A Comparison of Classical Management Theorists and Contingency Theorist

A Comparison of Classical Management Theorists and Contingency Theorists The management field is characterised by a wide variety of theories, schools and directions. This essay examines the classical and contingency schools of thought -- the approaches to organization that have had the greatest impact on management today. Firstly the essay delineates and criticises the important theories propounded by classical writers. The essay continues with an account of the contingency school, and finally evaluates its impacts on managerial thought. Up until about the late 1950s academic writing about organisational structure was dominated by the classical management school. This held that there was a single organisational structure that was effective in all organisations. (Clegg & Handy, 1999). According to Holt (1999), the classical school is characterised by ?being highly structured, with emphasis on the formal organisation with clearly defined functions and detailed rules, autocratic leadership, a rigid chain of command and control by superiors? (Holt, 1999, p.137). The three greatest proponents of classical theory were Taylor, Fayol, and Weber. Each identifies detailed principles and methods through which this kind of organisation could be achieved. Taylor (1947) developed a systematic approach to called ?Scientific Management?, which focused on efficient production. Through the study of task movements, or ?time and motion studies? as it was known, he recognized matching the correct worker to the task was crucial to increasing work efficiency. Under this so-called Taylorism, emphasis is placed on power confered to those in control. According to Morgan (1997), this approach to work design is found in traditional forms of assembly-line manufacturing and in production processes. Another major sub-field within the classical perspective is ?Administrative Management,? set forth by Fayol (1949). While Scientific Management took a micro approach, Fayol saw the macro concepts, a body of knowledge which emphasised broad administrative principles applicable to large organizations. In Fayol?s account, management is conceptualised as consisting of five elements, namely planning, organizing, command, co-ordination, and control. He also developed 14 principles of management or organisation, the best-known being division of work, unit... ...ure. Academy of Management Journal, 25 (3), 553-566. Luthans, F. (1973). The Contingency Theory of Management: A path out of the jungle. Business Horizons, 6, 67-72 Meyer, M.W. (1972). Size and the structure of organizations: A causal analysis, American Sociological Review, 37, 434-441. Pugh, D., Hickson, D., Hinings, R. & Turner, C. (1969). The context of organization structures. Administrative Science Quarterly 14:91-114. Pugh, D. & Hickson, D. (1996). Writers on organisations. London: Penguin. Robbins, S. & Barnwell, N. (2002). Organisation Theory: Concepts and cases. Victoria, Australia: Pentice Hall. Taylor, F.W. (1947). Scientific Management, Harper & Row. Watz, T. (1996). Technology rules OK? A review of technological determinism and contingency theory. Creativity and Innovation Management, 5(1) 13-21. Weber, M. (1947). The Theory of Social and Economic Organization. A.H. Henderson and Talcott Parsons (eds.). Glencoe, IL: Free Press. Woodward, J. (1980). Industrial Organization: Theory and Practice, second edition. New York: Oxford University Press --------------------------------------------------------------------- [1] Pugh et al.

Free Color Purple Essays: The Power of Women :: Color Purple Essays

The Power of Women in The Color Purple   Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚   Despite the odds women can overcome all obstacles.   In the past, women have desperately struggled because they were belittled by men.   They were thought of as ignorant beings that only knew how to manage housework.   In The Color Purple, by Alice Walker, sexism was interrelated in the novel.   Throughout the story, several women were extremely mistreated by men.   Their experiences were considered trivial because they were always subordinated to them.   Through the collection of letters that Celie wrote, the reader could see the development of a frightened young woman who had little regard for herself and of another, Shug, who struggled to become a successful woman.   Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚   In fact, Celie nearly struggled for her happiness her entire life.   When she was only a little girl, her stepfather sexually abused her.   He then sold her to a man named Mr. ____ who had no intention of loving her, â€Å"No matter what I’m thinking.   No matter what I feel.   It just him† (Walker 69).   Mr. ____ verbally and physically abused her.   He expected her to manage all the housework and demanded that she took care of his kids, â€Å"They look at me there struggling with Mr.____ children† (Walker 45).   If Celie refused, she was punished.   Through all these traumatizing events, Celie lost respect for herself and forgot how to love.   Her life was full of darkness without a single trace of light.   However, Celie met a woman named Shug who gave her the courage to fight for what she believed in.   Shug taught her how to laugh and play and showed Celie a whole new perspective of life.   Shug constantly reminded Celie to speak out if something was bothering her and to not do anything that she did not feel like doing, â€Å"†¦say whatever come to mind, forgit about polite† (Walker 75).   Cel ie was no longer afraid of Mr. ____.   She stopped doing housework and left the dwelling to start her own business, â€Å"You a lowdown dog is what’s wrong.   It’s time to leave you and enter into the Creation.   And your dead body just the welcome mat I need† (Walker 207).   She realized that women do not need men to survive because they can manage on their own.   Celie was a brand new woman.   Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚   Moreover, Shug was a successful and powerful woman.   She was a desirable blues singer who was creative and smart.

Lifestyles Theory Essay

The â€Å"lifestyle/exposure theory† was developed by Hindelang, Gottfredson, and Garofalo (1978:243; e.g., see Goldstein, 1994; Maxfield, 1987:275; Miethe, Stafford, and Long, 1987:184). This model of criminal events links victimization risks to the daily activities of specific individuals (Goldstein, 1994:54; Kennedy and Forde, 1990:208).Lifestyles are patterned, regular, recurrent, prevalent, or â€Å"routine activities† (Robinson, 1997b; also see Cohen and Felson, 1979; Felson, 1994; Hindelang, Gottfredson, and Garofalo, 1978:241; Garofalo, 1987:24, 39). Lifestyles consist of the activities that people engage in on a daily basis, including both obligatory and discretionary activities. LeBeau and Coulson (1996:3; also see LeBeau and Corcoran, 1990) assert that:The former are activities that must be undertaken while the latter because they are pursued by choice are called discretionary. ‘An activity is discretionary if there is a greater chance of choice than constraint, and obligatory if there is a greater degree of constraint than choice† (Chapin, 1974:38). Both activities have a duration, position in time, a place in a sequence of events, and a fixed location or path in space (Chapin, 1974:37).Kennedy and Forde (1990:208) summarized the lifestyle/exposure model as â€Å"lifestyle, encompassing differences in age, sex, marital status, family income, and race, influences daily routines and vulnerability to criminal victimization, resulting in the fact that â€Å"Victimization is not evenly distributed randomly across space and time — there are high-risk locations and high-risk time periods† (Garofalo, 1987:26). â€Å"Lifestyle patterns influence (a) the amount of exposure to places and times with varying risks of victimization, and (b) the prevalence of associations with others who are more or less likely to commit crimes.† A similar theoretical model developed by Kennedy and Forde (1990: 209, 211) suggested that background characteristics and daily activities affect time spent in risky lifestyles which lead to dangerous results (i.e., criminal victimization). In their words, â€Å"demographic and lifestyle variables . . . can be interpreted as contributing to more or less ‘time spent in risky activities’ and indirectly contributing to ‘dangerous results'† (Kennedy and Forde, 1990:209).Numerous studies have shown relationships between daily activities of individuals and their likelihood of criminal victimization (Riley, 1987:340). In other words, what people do and how they behave places them at either more or less risk of criminal victimization (Maxfield, 1987; Miethe, Stafford, and Long, 1987; Sampson and Wooldredge, 1987).According to Sampson and Wooldredge (1987:372): â€Å"An active lifestyle . . . appears to influence victimization risk by increasing exposure of persons and homes to potential offenders while guardianship is low.† Yet, an active lifestyle may not necessarily increase one’s risk of criminal victimization. For example, if there is a great deal of activity by residents, neighbors, or passers by around a residence, then this activity may serve to decrease the likelihood that a property offender will victimize a residence. In fact, many property offenders are non-confrontational and want to avoid being seen by residents, neighbors, or passers by (Cromwell, Olson, and Avary, 1991; Tunnell, 1994; Wright and Decker, 1994). Whether an active lifestyle leads to higher or lower risks for criminal victimization may depend on several factors. It might depend on the nature of one’s activities — i.e., whether they are patterned and predictable to offenders, or sporadic and less predictable. This issue has not been settled by academic research, although the majority of lifestyle research suggests that active lifestyles increase risks for criminal victimization (Robinson, 1997b). Part of why there is some uncertainty about this issue is because when relationships between lifestyles and crime are studied, dependent variables typically consist of some composite measure of crime (see Robinson, 1997b; Thompson and Fisher, 1996). Whether active lifestyles lead to higher or lower risks for crime might depend on the specific type of crime that is being studied. Since composite measures of crime have been utilized by researchers rather than distinct measures of individual crime types (Bennett, 1991; Maxfield, 1987; Thompson and Fisher, 1996), it is nearly impossible to differentiate the effects of peoples’ lifestyles on different types of criminal victimization. This is problematic, because lifestyle/exposure theory is â€Å"crime specific† (Bennett, 1991:158; Thompson and Fisher, 1996). For example, crimes such as burglary and theft may create different opportunities for offenders: For a burglary to occur, an offender has to break and enter a home to get the desired goods. An offender who commits a larceny, on the other hand, may ride off with a bicycle left out on the lawn or steal something from the porch of a home. These examples demonstrate that the opportunity structure for burglary and larceny are different and therefore the two crimes must be examined separately in research (Thompson and Fisher, 1996:52; also see Gottfredson, 1984; Maxfield, 1987; Sampson and Wooldredge, 1987).Research examining the relationship between lifestyles and crime should avoid pooling or aggregating crime types, because examining the effects of lifestyles on composite measures of crime leads to inconsistent findings (Thompson and Fisher, 1996:53).