Texts in Conversations Essay Example | Topics and Well Written Essays - 1250 words

Texts in Conversations - Essay Example Finally, third wave feminism continues through the contemporary cultural landscape. In addition to large-scale political change, each of these movements is reflected in the artistic and cultural production of feminist writers of the time. This essay critically reviews prominent texts from each of the feminist waves – Virginia Woolf’s ‘Shakespeare’s Sister’, Simone de Beauvoir’s ‘the Second Sex,’ and Rebecca Walker’s ‘Becoming the Third Wave.’ Virginia Woolf was one of the most prominent writers within the first wave spectrum of feminist thought. Today her novels and essays remain widely read for both their literary qualities, as well as their prescient perspective on women’s equality. In terms of her stance on women’s equality, her text ‘Shakespeare’s Sister’ represents one of her most powerful statements. Woolf begins this text with the provocative statement, â€Å"It would h ave been impossible, completely and entirely, for any woman to have written the plays of Shakespeare in the age of Shakespeare† (Woolf). In addition to holding significant rhetorical quality, this statement is an indictment of both 17th century Europe, as well as cultural climate of Woolf’s time that severely restricts the rights of women. While Woolf’s text expresses many of the concerns that will later be echoed in second and third wave feminist literature, it’s clear that Woolf’s formulations distinctly constitute proto-feminist concerns. As Woolf’s text unravels it’s clear that it focuses upon the position of a woman in 17th century England. She seminally writes that any, â€Å"woman born with a great gift in the sixteenth century would certainly have gone crazed, shot herself, or ended her days in some lonely cottage outside the village, half witch, half wizard, feared and mocked† (Woolf). Even as Woolf is referring to the condition of the woman in 17th century Europe, it’s clear that her statements are reflective of her own social challenges. The cultural climate of Woolf’s time remain highly centered on the male as the breadwinner and this carried over into the process of education and social responsibility. In these regards, Woolf is articulating essential aspects of the woman’s experience in her world; namely the nature of patriarchal society as restricting the woman’s full potential and the abhorrent recognition of this reality. While such concerns are more emblematic of first wave feminism, they are reflective of the central of all feminist waves, and are reflected in both de Beauvoir and Walker’s texts. Simone de Beauvoir’s ‘the Second Sex’ is recognized as a seminal text in terms of the second wave feminist movement. While Woolf’s work examined broader feminist and human rights concern, de Beauvoir’s text is more rooted in th e cultural climate of her day. It’s also clear that while Woolf’s text is more concerned with the oppressive social mechanisms that restrict women’s rights, de Beauvoir is further pointed as she directly identifies men as the oppressive party. Consider de Beauvoir who writes, â€Å"The whole of feminine history has been man-made. Just as in America there is no Negro problem, but rather a white problem; just as anti-Semitism is not a Jewish problem, it is our problem; so the woman problem has always been a man problem† (De Beauvoir, pg. 102). In these regards,

Why student athletes should be drug tested Essay

Why student athletes should be drug tested - Essay Example According to ESPN, the University of Oregon has decided to implement drug tests for its athletes on random basis right after a research conducted by ESPN proved that football teams that play at University level have forty to sixty percent of the total players who are involved in the act of abusing marijuana (ESPN, 2012). Similar kind of random and announced drug activities have been implemented by several universities. These tests have gained immense amount of criticism as these tests have failed to achieve the objective for which these tests were being conducted and have ended up being counter productive. These tests have been criticized because these tests do not reduce drug abuse, these tests can result in loss of trust and these tests are against individual’s constitutional rights. The drug tests conducted on random basis among athletes are conducted because educational institutes believe that these tests will decrease the probability of athletes using drugs and since athl etic students are popular, other students will follow their lead. The universities even believe that students will fear the tests and due to the fear that these results will be informed to parents, athletic students will not abuse drugs. Two studies conducted during 2003 reported that drug tests never reduce consumption of drugs and these tests may lead to increase in consumption.

Key Factors of Consumer Behaviour Essay Example for Free

Key Factors of Consumer Behaviour Essay 1. Discuss and explain the key factors influencing consumer behaviour. Why must organisations understand consumer behaviour in order to optimise sales? Marketing is the activity, set of institutions and processes for creating communicating, delivering, and exchanging offerings that have value for customers, clients, partners, and society at large (AMA, 2007). Consumer behaviour is the judgment of final consumers individuals and households who buy goods and services for personal consumption (Kotler et al., 1999) There are four key factors influencing consumer behaviour. They are social, cultural, personal and psychological factors. Consumer may tends to change their buying behaviour according to these factors. Cultural factors are described as people who react particular way regard to religion reason. Different culture response differently, how people behave with their buying decision. for instance in Myanmar, majority of people do not have a habit of doing sport or using supplement for diet purposes. In United Kingdom, on the other hand, groups of men and women tend to emphasis on sport and taking supplement. As a supplement business prospective, they should not supply their product or sell in Myanmar. Social factors are mainly influenced by family, close friend and personal attitude. They are also known as reference group. Reference group are important as the product are satisfied for their needs, the message with forward to another person which is also known as word of mouth. The communication is powerful because we trust our friends and colleagues opinions. For example, majority of wealthy people do not buy a Primark product, simple because of their status, they should be buying much more expensive product such as Gucci and Chanel. If they do consumer Primark product their friend may talk behind their back which affect the status. After taking cultural and social factors into consideration, the next things people naturally put things into account is personal factors. personal factors can be defined as a belief in which a person think the particular brand is valued to them. Personal factors consists of buyers age, occupation, economic situation and lifestyle. Depending on human life cycle, buyers decision making is changing in different stages. Therefore, marketer often segment the market and target the consumer life stages. As an example, it is an inappropriate for the marketer to sell Samsung latest smart phone to senior citizen, they may only want to use simple keypad phone. In term of occupation, people are concerning about their status and image in their society. The products that they consume are crucial to his or her status. Psychological factors include belief, interest and motivation. Everyone has their own belief in different way. Often majority of people are bias when buying a particular brand. There is no right or wrong answer, in fact, people learnt from past experience whether the brand had met their needs or how they perceived the brand . For example, Iphone 5, more and more people are getting the new Iphone 5, not because it is very special. In fact Samsung s3, has better functionality than Iphone but still people buys it. This shows people value the brand of Apple and how they perceived the brand. Motivation factors are another factor that consumer think before they buy. According to Maslow theory, different people has different needs. So, marketer should know how to segment the market and target the right person to maximise sales. In summary, organisation should consider how consumer behave for certain product by looking at these four factors. furthermore, communicating with consumer are crucial to the market as they sent the message the consumer about the products feature. Therefore, marketer has to be segment the market and target the right consumer to deliver the message across.

Principle Of Material Balance With Chemical Reaction Biology Essay

Principle Of Material Balance With Chemical Reaction Biology Essay The aim of this report is to make use of the principal of material balance with chemical reaction so to able to find out the yield, conversion rate and rate of reaction for the batch process. The hypothesis made in this experiment was when the concentration of sodium hydroxide decreases, the conductivity values also decreases. The steps for conducting this experiment are to prepare the reagents first. Then allow the reaction between the two reactants sodium hydroxide and ethyl acetate to mix together for reaction. Take note of the time and draw graphs of the reaction and finally find the yield of the reaction. There are two conditions to be studied in this case and it can be determined by the group itself. In this report, the concentration used is 0.01M of ethyl acetate and 0.02M of ethyl acetate solution. The yield calculated was that yield was higher in 0.02M of ethyl acetate compared to 0.01M of ethyl acetate. The rate of reaction is higher also in 0.02M of ethyl acetate solution based on the steepness of the graph. This is because as more molecules react with each other, more product will form at the same time and therefore in average, more product are formed at the same time and hence rate of reaction increase. However, the conductivity value was higher in 0.01M of ethyl acetate compared to 0.02M of ethyl acetate. This happened as more NaOH is being reacted with 0.02M of ethyl acetate solution. When this occurs, the conductivity value decreases as NaOH is a best conductor of electricity among the reactants and if the concentration decreases, the conductivity values also decreases and vice versa. Overall, the hypothesis made and the aim made for this experiment is correct and it also follows the law of material balance with chemical reaction. iii 1. Introduction Background Literature In the process industry, maximizing the yield is important as not only it save cost of production, but also bring more profits to a company. However, maximizing the yield is closely related to the conversion of units and rate of reaction. This is because with the help of the two factors, then maximizing yield could be done possible (Singapore Polytechnic 2009). Much time were set apart in this area at the industry to adjust the factors to optimum factors for the maximum yield it can have. Beside maximum yield, maximum reaction is also required between the reactants. Reaction rate is especially important in the industry as there is a need to know exactly what is the required time needed for the reaction to be complete. It can be calculated by finding the rate of the reaction is going at a constant time and multiply against the amount of reactants used. In this experiment, the main objective is to look at the saponification of sodium hydroxide and ethyl acetate solution to form the desired product sodium acetate. Overall, the whole experiment wanted the students to get prepared for the fundamentals of material balance with chemical reaction through the reaction between the reactants to get the final product. 1.2 Aim The aim of this experiment is to study and determine the yield, conversion and reaction rate of the starting reagents sodium hydroxide and ethyl acetate. It helps the students to know how to calculate the yield. 1.3 Hypothesis In this experiment, the main objective is to find out the relationship between the concentration of NaOH and the conductivity values. According to the theory, as the reaction of ethyl acetate increases, conductivity values will decrease and vice versa. 1 2. Theory 2.1 Introduction of Theory In this case, material balance deals with chemical reaction where students associate the product and the reactants. Material balance states that reactant that goes in to react must come out from the system as a product. The law of material balance also states that a system must, by conservation of mass, either leave the system or accumulate within the system. (Wikipedia 12 Dec 2009) The reactants used are sodium hydroxide and ethyl acetate by processing it batch wise in a reactor to produce the desired product sodium acetate and the by- product ethanol. 2.2 Saponification Saponification is the hydrolysis of an ester under basic conditions to form an alcohol and the salt of an acid This term is normally associated with the reaction of an alkali (normally metal) with a fat compound to form soap. However, only certain lipids that contain ester linkages can undergo hydrolysis. This reaction is also catalyzed by a strong acid or base. (Wikipedia 12 Dec 2009). The alkali that is going to be used is sodium hydroxide solution and the ester that is to be used is ethyl acetate solution. After it had reacted, it will form the product sodium acetate. In the past, saponification also refers as soap making as the properties of the reactants is about the same only with the exception that fats or oil is used instead of the ester ethyl acetate. 2.3 Batch Process Batch process is an operation where a fixed amount of reactants are being fed into the reactor. It is an unsteady state process where the flow rate of the system is not proportional to the time taken to flow. So therefore, the rate where sodium acetate where it is formed is not constant and the rate of accumulation are also not constant. Accumulation consists of either the reactants which had not been used up during the reaction or the product that are being left inside the reactor. The product will stop producing if any of the reactants is used up. The reactant that is being used up first is the limiting reagent. Normally, limiting reagent is the more expensive reagent. Because it can save up cost of production as it is considered wasteful if there is any expensive reagent not used up. Ethyl acetate, being the more expensive reagent, will be the limiting reagent in wise. There are also two equations relating to the batch process. Final Output-Initial Output = Generation Consumption If there is no reaction, Initial Input= Final Output (Product=Reactants) (Singapore Polytechnic 2009) 2 2.4 Conductivity Conductivity is a measure of an electrolyte of its ability to conduct electricity. (Wikipedia 2009) The S.I unit of conductivity is Siemens per metre (S/m). Conductivity measurements are usually used in many industrial and environmental applications. This is because it has been proven as a fast, inexpensive way of measuring the ionic content of a solution. For example, the measurement of product conductivity is done so by tracing the performance of the water purification system under close monitor. In many cases, conductivity is linked directly to the total dissolved solids (T.D.S). High quality deionised water has a conductivity values of about 5.5 lS/m, drinking water is in the range of five-fifty mS/m while sea water is about 5 S/m. The reason why sea water has such high conductivity because of the ionic compounds dissolved in it and all of them are conductor of electricity. The most basic compound dissolved in seawater is table salt, Sodium Chloride. For this experiment, the result that is required is the conductivity of sodium hydroxide solution after reacting with ethyl acetate for a certain period of time. The amount of time set for the reaction is twenty minutes and it can be adjusted accordingly. 2.5 Yield Yield is the amount of product obtained in a chemical reaction. The units of yield can be given in grams or in moles. To be exact, yield is also defined as the mole/s of desired product formed per mole of key reactant fed into the reactor. This experiment also required the students to find out the yield or how much the products it has which is the desired product sodium acetate. Even though ethanol is still considered as a product, it is a by-product and hence the yield is not required to find out. 3 Procedure (Singapore Polytechnic 2009). 3.1 Pre- Assessment activity Before starting the experiment, besides preparing the starting reagents, students have to ensure what are the equipments required for this experiment. After checking it, make sure to rinsed all apparatus with D.I water to ensure no impurities present in any of the equipments. There is also a Material Safety Data Sheet (MSDS) that tell us the nature of NaOH and ethyl acetate. The data sheet also tells us what are the hazards and the safety precaution to take note of for these two compounds. 3.2 How to Prepare the Starting Reactant Firstly, students must read how to handle NaOH and ethyl acetate and the recommended way of disposing these two chemicals. Disposable gloves and chemical goggles is a must as even if the chemical spilled out, the glove will prevent the chemicals from harming the students. 500ml of ethyl acetate is to be prepared at this stage as the concentration is being discussed during the pre- assessment activity. Students may use the measuring cylinder to measure the required volume of both reactants and the volume is the pre-determined during the pre-assessment activity. Then both are being poured into the 500ml volumetric flask respectively. The solutions are to be filled up to the 500ml mark for both reactants. 3.3 Experimental Setup Pour in the NaOH solution to the reactor. Alter the set up condition accordingly by the discussed by the group earlier same as the volume used for the reactants. Make sure it is approved by the lecturer. Remember to record down the reaction of conditions such as the stirring speed of the stirrer, concentrations, temperature and the volume of the reactants. Make sure the conductivity probe is inside the solution. Pour NaOH in first. Then when ethyl acetate solution is poured in, start the timer immediately. Record the value every 1 minute and this goes on up to 20 minutes. After 20 minutes, stop the stirring device and remove the magnetic bar using the magnetic rod. Clean all the equipments properly (e.g. Clean the conductivity probe with D.I water etc). Before doing so, pour all the unwanted solution to the containers respectively. Repeat the experiment again with different condition. Repeat the steps mentioned above. Tidy up the workplace and the experiment is considered done. 4 Results And Calculation 4.1 How to Determine the Yield of Sodium Acetate at 15 Minutes for 0.01M of Ethyl Acetate? The yield of sodium acetate at 15 minutes can be determined by the concentration of NaOH. From the concentration, students can find out the amount of mole of NaOH and also by the molar ratio of NaOH and ethyl acetate. By making use of the results form the procedure, students can also find out the concentration of NaOH and ethyl acetate. Theoretical Mole of NaOH = 0.01 X 0.5L = 0.005 mol Actual Mole of NaOH = 0.00156 X 0.5L = 0.00078mol Number of moles reacted = 0.005 0.00078 = 0.00422mol Conversion of NaOH= 0.00422/0.005 X 100% = 84.4% Theoretically, since 1 mole of NaOH react and form 1 mole of CH3COONa, actual mole of CH3COONa= 0.00078 Yield of CH3COONa= 0.00078/0.005 =0.156 4.2 What Is the Yield When 0.02M of Ethyl Acetate Solution Used At 15 Minutes? Theoretical mole of NaOH = 0.02 X 0.5L = 0.01 mol Actual mole of NaOH = 0.0017 X 0.5L = 0.00085mol Number of moles reacted = 0.01 0.00085 = 0.00915mol Conversion of NaOH= 0.00915/0.01 X 100% = 91.5% Theoretically, since 1 mole of NaOH react and form 1 mole of CH3COONa, Actual mole of CH3COONa= 0.00085 Yield of CH3COONa= 0.00085/0.01 = 0.085 5 4.3 What Is the Rate of Reaction When 0.01M And 0.02M of Ethyl Acetate? Figure 1: Rate of reaction for 0.01M of ethyl acetate Figure:2 Rate of reaction for 0.02M of ethyl acetate 6 4.4 How to Determine Rate Constant The rate constant can also be determined by the graph except by drawing a tangent line against it as the tangent line mean the rate is going at a constant rate. Figure 3: Rate constant for 0.01M of ethyl acetate Graph shown above is straight line. Gradient= 0.00265-0.0012 Ã · 20 1 = 0.0000763 (From the graph) Figure 4: Rate constant of 0.02M of ethyl acetate Graph shown above is straight line. Gradient= 0.00275 0.00125 Ã · 20 1 = 0.0000789 (From the graph) 7 Discussion 5.1 Factors Affecting Rate of Constant The factor that may affect rate of constant is temperature of the reactor, concentration of the reactants, pressure or volume of the reactants. Firstly, as temperature rises, it can lead to a higher probability of particles colliding each other. Hence it will increase rate of reaction with an increase of the temperature, the moving speed of the molecules increases, with higher moving speed, it will increase the chances of molecules colliding to each other, therefore increases the rate of reaction. However, during the experiment, the temperature of the reactor was keep constant at a range of 23.5oC which is at room temperature, therefore, temperature was not taken in to account in this experiment. Secondly, concentration of the reactors, with a high concentration of the reactant, the rate of reaction with also increases. This is caused by the increasing number of particles in a reactant. With larger amount of particles, the successful rate of particles colliding in to each other are higher, therefore cater to a faster rate of reaction. However, as we are conducting the experiments, instruction of using a constant concentration of the reactant were told, therefore, concentration of the reactant is also not to be taken in to account. 5.2 Factors Affecting Conversion and Yield The equation above have NaOH and ethyl acetate as their reactants and sodium acetate and ethanol as the products formed. As indicated on the lab manual, the amount of NaOH used is fixed at 0.1M, therefore reactant A is ethyl acetate and the desired product is sodium acetate. The factors that affect the yield of the desired product are the volume and concentration of reactant A which are fed in to the reactor. With an increment of both the volume and concentration of reactant A, the number of moles of the reactant will increase. Two experiments were done to prove that volume can cater to a different yield. The first trail of the experiment, the volume of ethyl acetate was set to 0.49cm3 and on the second trial, 0.92cm3. The yield of the product decreased as the volume increased, this was proven as the yield of the second reaction was lower than the first. 8 Factors Affecting Conductivity Values Mainly, there are two main factors that are affecting the conductivity values. There are the speed of the stirrer and rate of reaction. When the speed of the stirrer increases, the conductivity values decreases. This is because it introduces more collisions between the particles and hence more products are formed at the same time. As more NaOH is being converted to sodium acetate, the conductivity value will increase as mainly NaOH is the best conductor of electricity present within the reaction and vice versa. Temperature indeed affects the conductivity values but as the temperature during the reaction is being kept constant, it will not be any of the factors that affect the reaction. Precautions In Experiment There are some precautions taken for the experiment. For example, when handle corrosive or volatile chemicals such as NaOH or ethyl acetate, make sure to wear disposable glove and avoid smelling ethyl acetate as it is a volatile liquid. Also, the smell of ethyl acetate is harmful to our body and when are diluting it, it is best to wear a surgical mask while extracting the pure ethyl acetate solution. While doing the experiment, wear safety goggles at all times to prevent the spurring of the reactants during the chemical reaction. After doing the experiment, also make sure that the magnet is taken out by the magnetic rod and not take it by the hand itself. This is because chemicals present in the beaker may not have reacted completely and traces of reactants may still be found present in the solution. This is a common mistake made by students as some of them will take it out by bare hand after realizing they did not take it out before washing. Comparison between the Yields of Different Concentration of Ethyl Acetate. Yield obtained in 0.01M of ethyl acetate is 78% while yield obtained in 0.02M of ethyl acetate is 85%. After comparing the yield between the two concentrations of ethyl acetate, 0.02M of ethyl acetate tends to have higher yield than 0.01M of ethyl acetate solution. The result is the same as the hypothesis made at the start of the report. This is because as there are more molecules of ethyl acetate present during the reaction. The rate of reaction increases because of the kinetic particle theory. The kinetic particle theory states that as more molecules collide during the reaction, it will form more products. Hence, yield will increase as more products are formed. 9 Comparison between the rates of reaction of different concentration of ethyl acetate. The curve was smoother in 0.01M of ethyl acetate compared to 0.02M of ethyl acetate. This is because with a high concentration of the reactant, the rate of reaction with also increases. This is caused by the increasing number of particles in a reactant. With larger amount of particles, the successful rate of particles colliding in to each other are higher, therefore cater to a faster rate of reaction. Hence, rate of reaction was faster in 0.02M of ethyl acetate compared to 0.01M of ethyl acetate. 10 6. Conclusion In conclusion, the aim that was made at the start of the experiment was successful as students has indeed learnt the fundamentals of material balance that even though the time required to make the product varies with the amount of products, anything that goes in must also get out is the main point that the students learnt. There are many factors that can affect the condition studied. This includes temperature, pressure, volume, rate of reaction, conversion and yield etc. Also, as the NaOH concentration increases, the conductivity values also increases and vice versa. This is the same hypothesis made in this report and therefore it can be concluded that the hypothesis is correct. 11

Palestine And Isreal Conflict Essay -- essays research papers

Territorial disputes over which religion should have control over the holy lands have been ongoing for about two thousand years with little to no resolution in sight. Everyday, on the news, there is a story about how there was retaliation over the killing of a Palestinian or Israeli. As a result of these more are killed leading to the cyclical pattern of retribution. This conflict has diminutive weight in the eyes of the people of the world since it has been carried on for so long. The argument for both groups is a claim that Jerusalem is the rightful possession of their religion and the key to the survival of their cultures. Promises for peace are frequent but never upheld by either side. As the everyday struggle for peace continues little is accomplished to up hold that pledge for peace to end the violence and hate. The shouting voices of the Palestinian People in the streets cry out in anger, †Down the olive branch, long live the gun.† There is more to the never endin g holy war than that of which the media allows us to see, the fear and loathing for that of a better life. The trifling stories of the individual are frequently untold even though they are a transgression committed against personal liberties.   Ã‚  Ã‚  Ã‚  Ã‚  When the rest of the world gets involved it becomes a much more complicated affair than if people were to leave it alone for the two countries to work it out between themselves. The Palestinians and the Israelis could view intervention as siding with one side or the other leading to defensiveness and therefor slowing down or sometimes halting any progress that may have been made. Since the late 1940’s the Untied Nations has become increasingly more involved in order to put and end to the human suffering of the people in that region. By having the two groups send representatives to the Netherlands, which is seen as a non-partisan territory that would be less intrusive in negotiations. The United Nations and the Palestinian Liberation Organization have assembled and come to resolutions that were thought to be in the best interest of each of the countries in order to instill peace and bring order to the region. By this process there has been much animosity bui lding within the population with civilians killing soldiers and vice versa as seen on the news reports.   Ã‚  Ã‚  Ã‚  Ã‚  In around the year 750 A.C.E the A... ...and being helpful and non-intrusive in the peace making process. Since the UN General Assembly met in 1947 and recommended that the land be partitioned among the two groups. In this the Jewish people took less land than they originally had previously wished to control. The PLO was formed of the different Arab groups that wanted to control the Israeli occupied territory. This is an example of how intervention from groups could be used to further their cause. In 1974 the UN recognizes the PLO as a legitimate representative body of the Palestinian people and therefore fueling the nationalism within the hearts of its people which is good for their cause. After the Israelis had defeated the Arabic aggressors they then were forced by the UN to return the settlements taken in the war. This action would not have been taken if the Arabs were to win. The PLO would have let them keep the lands since their primary goal was to destroy Israeli. Because of these efforts to maintain peace it is a better premise than if it were to be left up to the factions to settle disputes for themselves. The UN has used their influence to pursue a more peaceful resolution and to save the lives of the citizens.

Computer Security and Hacking :: Internet Security

Getting Ip's:-- To see the ip all computers you are connected to (web servers, people attempting to hack into your computer). Go to dos (start>run>type command) and run the netstat command. Type netstat /? for details. Type netstat -r at the command prompt to see the ip of all computers you are connected to In MSN (and other programs) when you are chatting to someone everything you type goes through the MSN servers first (they act as a proxy) so you see their ip rather than who you are chatting to. You can get round this by sending them a file as MSN doesn't send file through its proxy. When you type the netstat -r (or -a for a different view) the ip's are under the foreign address table. The ports are separated by a : . Different programs use different ports, so you can work out which ip's are from which program. Connecting to other computers and what ports are:-- Servers send information. Clients retrieve. Simple. Windows comes with a built in program to connect to other computers called telnet. To start Windows telnet Start menu> Run> type Telnet. Click connect> remote system Ports are doors into computers. Hosts are computer names (ip number or a name that is translated into the ip automatically) Different programs open different ports, but they always open the same ports so other computers know which port to connect to. You can get a port list listing all the different ports, but a basic one is: 11 :- Sends info on the computer 21 :- FTP (File transfer program) 23 :- Telnet (Login to the computers command line) 25 :- Smtp (Sends mail) 80 :- Http (Web pages) There are thousands of different programs using different ports. You can get programs called portscanners which check a computer for all ports up to a certain number, looking for ways in. You can portscan a computer looking for ways-in. Anyway, back to telnet. Type www.yahoo.com as the host and port as 80 the click connect. If nothing happens, you're in. Wow. You are connected to Yahoo's server. You can now type http commands (you are connected to an http server, so it supports http commands). Ie. on an ftp server you can type open and it will do something. On an http server it will just wonder what the hell you are on about. Type get / http/1.

Ethics of Hydraulic Fracturing Essay

Large gas companies have been wreaking havoc on Midwestern United States. These companies’ practices of hydraulic fracturing have been very detrimental to the local populace. Hydraulic fracturing has been known to damage the environment through earthquakes and gas spills. In addition, it has been said that these companies have certain law exemptions that only they enjoy. These unsafe practices have contaminated local’s water supplies. There have even been cases where people have been able to light the water from their faucets on fire. Stricter government regulation should be enforced on these gas companies. Hydraulic Fracturing, or fracking, has recently (in the last ten years) been used extensively by gas companies (â€Å"The Facts About Fracking†). Fracking involves drilling down below shale formations (over a thousand feet) in the ground and pumping water, sand, and chemicals until the rock fractures. When the rock fractures it releases natural gas that can be collected at very inexpensive cost. The problem is that this can contaminate local water supplies, including lakes, ponds, streams, rivers, and ground water. The documentary Gasland stirred up interest in the American population to the effects of fracking. After being offered one hundred thousand dollars for his land from a gas company, the director Josh Fox traveled around America investigating the effects of fracking on the local rural populace. Josh Fox did an excellent job at exposing the gas industry for what it really is. The film won an Oscar nomination and has been praised by environmentalists nation-wide. One of the environmentally damaging effects of hydraulic fracturing is that it has been known to cause earthquakes. Reports of minor tremors of no greater than 2. 8 on the Richter scale were reported on June 2, 2009 in Cleburne, Texas, the first in the town’s 140-year history† (Fox). On the other side of the argument, they claim â€Å"Given the ubiquity of fracking without seismic impact, the risks would seem to be remote† (â€Å"The Facts About Fracking†). This is irrelevant considering that earthquakes are happening where they otherwise would not have occurred. In addition to earthquakes, they also damage the environment by causing environmentally damaging oil spills. In the past two years alone, a series of surface spills, including two blowouts at wells operated by Chesapeake Energy and EOG Resources and a spill of 8000 gallons of fracking fluid at a site in Dimock, Pa. , have contaminated groundwater in the Marcellus Shale region. The amount of water required to drill all 2916 of the Marcellus wells permitted in Pennsylvania in the first 11 months of 2010 would equal the amount of drinking water used by just one city, Pittsburgh, during the same period, says environmental engineering professor Jeanne VanBriesen (qtd. n McGraw). Spills like these cause water contamination for the locals. In this case, a large portion of the spilled fracking fluid flowed into a nearby stream (McGraw). The level of contamination is still being investigated. These irresponsible and selfish practices must be regulated before irreversible collateral and environmental damage occurs. Gas companies have even been able to exploit certain loopholes in the law. An employee from the Environmental Protection Agency stated that the fracking industry enjoy certain legal exemptions from the Clean Water Act – courtesy of Dick Cheney (qtd. in Fox). The federal Energy Policy Act of 2005 contained a provision that has come to be known as the â€Å"Halliburton Loophole,† an exemption for gas drilling and extraction from requirements in the underground injection control (UIC) program of the Safe Drinking Water Act (SDWA). Other exemptions are also present in the Clean Air Act and Clean Water Act (Fox). This is an injustice to the local people whose water has been contaminated by these companies. If the government will not regulate these large companies, what will stop these large companies? Furthermore, chemicals contaminating the locals’ water supply have been shown to be a serious health risk. It is reported that â€Å"Last year the EPA found that some chemicals known to be used in fracturing were among the contaminants detected in 11 residential drinking water wells†¦Ã¢â‚¬  (Lustgarten). These chemicals have even been known to be carcinogenic (Lustgarten). Contaminated groundwater becomes a problem for locals when their cattle have to drink the contaminated water. There are even cases of sick animals where all their hair falls out (Fox). Many farmers worry about the welfare of their cattle’s health which is sometimes their only source of income (Fox). Landowners in shale gas drilling areas have reported foul smells in tap water, and toxic chemicals, such as benzene, have been detected in water from wells near drilling sites (Fox). In addition, there are cases of air pollution from the machinery from the drill sites (Fox). Many claim that the air pollution is the cause of a lot of cancer in the locals (Fox). In Dish, Texas, Mayor Calvin Tillman claimed that the fracking industry created carcinogenic pollution in his town (â€Å"The Facts About Fracking†). He then quit his job and left his hometown to protect his sons from this pollution (â€Å"The Facts About Fracking†). These unsafe practices can be very harmful to the local rural populace, and must be regulated. Scientific studies have shown that the drilling has caused local drinking water to be contaminated with methane. In fact, it has been shown that locals can light their water on fire. â€Å"â€Å"Our results show evidence for methane contamination of shallow drinking water systems in at least three areas of the region and suggest important environmental risks accompanying shale gas exploration worldwide. A scientific study has linked natural gas drilling and hydraulic fracturing with a pattern of drinking water contamination so severe that some faucets can be lit on fire. While most of the wells had some methane, the water samples taken closest to the gas wells had on average 17 times the levels detected in wells further from active drilling† (Lustgarten). This shows that their gas drilling in fact causes this contamination. The contamination can get so bad that it directly affects the local’s safety. There is a case that is being investigated where a large portion of a river is highly contaminated from seeping methane gas; it is so highly contaminated that all wildlife has died along a large portion of the river (Fox). Along the banks of the river are dead bodies of birds, squirrels, and other wildlife (Fox). One local even claims that her father died from drinking the water many years earlier (Fox). In Josh Fox’s documentary, it shows a clip of someone lighting seeping gas coming out of the ground on fire (Fox). â€Å"In several cases, homes blew up after gas seeped into their basements or water supplies. In Pennsylvania, a 2004 accident killed three people, including a baby† (Lustgarten). This irresponsible, disregard for basic human rights must be stopped. Large corporations that run free and unregulated will do whatever it takes for their own gain. The local rural populace has been very badly affected by the practices of hydraulic fracturing. It is clearly shown that these locals are not being heard and little is being done for compensation for the locals (Fox). These gas companies have too much freedom to operate and must be put to stricter government regulation. The question is not whether we should frack or not, but rather how do we regulate these practices to minimize the collateral and environmental damage.