Investigating the Strength of a Supermarkets Plastic Bag Essay Example for Free

Investigating the Strength of a Supermarkets Plastic Bag Essay Aim I have been asked to investigate the strength of a supermarkets plastic bag. I am going to test and analyse the plastic bag by investigating how applying a gradual increasing force effects the extension of the material. Apparatus * 30cm by 1cm strip of plastic bag, * Stand, * Clamp, * Boss, * Weights (N)- 100g * 2 wood blocks, * Ruler Method Before we can begin the experiment my group and I will have to set up the apparatus as shown on the diagram but with excluding the weights. We will set up the apparatus by cutting a 1 by 30cm strip of plastic from a plastic bag. We will proceed by placing the strip in between the two wooden blocks and then into the clamp. We will then begin the experiment by applying the first weight of 1 Newton. After applying the first weight we will then measure the length of the plastic strip record the length and calculate the extension. We will continue the experiment by adding another 1 Newton and recording the result and extension again. We will continue to keep adding 1 Newton and recording the results until the strip of plastic snaps or we have recorded a total of 10 results. We will redo the experiment twice again so that the results are more accurate and we can determine an average. To make sure that we keep it a fair test we will make sure that we use the same length of plastic strip each time we carry out the experiment. When we increase the force we will always increase by 1 Newton to keep it a fair test. We will be measuring the length and extension of the plastic strip in centimetres (cm). We are doing to this to measure it. Preliminary Work Before completing the plan we tested the experiment as explained in the method. We found that as we increased the force in 1 Newton that the plastic strip actually snapped under an average of 3 Newtons which didnt give us enough results for the experiment. We tested this 3 times and found that this was happening for each time we carried out the experiment. To compensate for this we have decided to increase the force by only half a Newton so that more results can be recorded. Whilst carrying out the experiment we did record a set of results as follows- Experiment 1 Force(N) Length(cm) Extension(cm) 0 28 0 1 28.4 0.4 2 28.8 0.8 3 29.3 1.3 Experiment 2 Force(N) Length(cm) Extension(cm) 0 28 0 1 28.2 0.2 2 28.6 0.6 3 29 1 Experiment 3 Force(N) Length(cm) Extension(cm) 0 28 0 1 28.5 0.5 2 28.7 0.7 3 28.9 0.9 4 29.2 1.2 From these preliminary results I can see that the plastic extends to no more than 1.3cm of its original length before snapping. These results will help me with my prediction. Prediction I already know that the plastic bag is made up of polymers. These are chemical bonds which make up the properties that form the plastic bag. The polymers in which plastic bags are made are more commonly known as polyethylene. Polyethylene is a straight chain polymer. It consists of chains made up of only carbon and hydrogen. The bond that form the chain are covalent bonds and are held together by relatively weak electrostatic forces, because the bond carbon and hydrogen that form the polyethylene are covalent it means that they share electrons. The displayed formula for polyethylene is The chains can go on and on, The longer the chains the stronger the plastic. Polyethylene is very cheap to produce. It is strong and easily moulded. There are forces acting between the particles or molecules of the polyethylene which prevent the change in shape of the material, which when forces are applied can effect. Under the action of external forces the polymer bonds stretch and begin to straighten. At this point the plastic is actin as an elastic. As more force is applied will continue straightening until they reach a point of equal force, at this point the plastic is in a state of strain and can no longer straighten out. This is where the plastic begins to act as a plastic. If more force is applied the bonds will snap and the plastic strip will also snap. After taking into account of the information I already know and the results from my preliminary work, I predict that as the force is applied to the plastic strip it will stretch as an elastic until the force becomes so great it reaches a point at which it can no longer stretch as the bonds have been straightened and weakened, at this point I believe that the plastic strip will snap. Results Whilst carrying out my experiment I recorded the following results, Experiment 1 Force(N) Length(cm) Extension(cm) 0 28 0 1/2 28 0 1 28.2 0.2 1-1/2 28.2 0.2 2 28.4 0.4 2-1/2 28.4 0.4 3 28.6 0.6 3-1/2 28.7 0.7 4 29.0 1 Experiment 2 Weight(N) Length(cm) Extension(cm) 0 28 0 1/2 28 0 1 28.2 0.2 1-1/2 28.3 0.3 2 28.3 0.3 2-1/2 28.5 0.5 3 28.6 0.7 3-1/2 28.8 0.9 4 29.0 1.1 Experiment 3 Weight(N) Length(cm) Extension(cm) 0 28 0 1/2 28.1 0.1 1 28.1 0.1 1-1/2 28.2 0.2 2 28.3 0.3 2-1/2 28.5 0.5 3 28.7 0.7 3-1/2 28.9 0.9 4 29.1 1.1 I am now going to calculate the average for the extensions of each experiment, Average results Weight(N) Average extension(cm) 0 0 1/2 0.03 1 0.1 1-1/2 0.2 2 0.3 2-1/2 0.4 3 0.6 3-1/2 0.8 4 1.0 I am now going to plot a line graph for each set of results and my average results so that they can be easily viewed and analysed. I will use the line graphs to look for patterns and trends. I can also use the line graphs to determine whether I experienced any anomalous or irregular results.

What Compact Disc Would I Take to a Desert Island? :: Music

What Compact Disc Would I Take to a Desert Island? Tough question. What else to take? Easy Enough. I would bring as many bags of Utz Salt n’ Vinegar potato chips as possible, one copy of Earnest Hemmingway’s The Old Man and the Sea, and I figure just about any woman would suit me. Denied these things, the choice of a Desert Island Disc is made much more complicated. With nothing else to occupy my mind I need that one great disc. Much like Nick Tosches’ choice of Sticky Fingers I find this decision extremely difficult: "But Sticky Fingers is a choice as mysterious and as difficult to explain to myself as anyone else."(Tosches 4) The choices are numerous and I’m pulled and so many different directions at once it is very difficult to decide. Santiago had it easy; I’ll take the Marlin over this essay any day. The first band that popped into my head was, of course, Led Zeppelin. But, before I thought of any Zeppelin albums a few other choices came by. The first had to be Pink Floyd’s Dark Side of the Moon. This album gets as much listening time as any single Led Zeppelin album. The music is haunting, powerful, and emotional. The problem with this is it lacks some of the levity that I felt would be necessary on the Desert Island. Tracks like "Time", which is about how fast time goes by in life, would only remind of how heart wrenchingly slow time would flow on the desolate sandbar. Darkside had to go. My next thought was Yes 90125 released when the band reformed in the early 80’s. This album in my opinion is on of the greatest albums ever composed. It though my entire lifetime has consumed the lion’s share of my listening time. This album flows as almost a singular musical creation. But this lacked levity and more importantly the variety that I wanted. This one wouldn’t fly either. The next album that popped into my head was Das Efx Dead Serious. This rap album might sound like a strange choice when compared to the other albums I’ve described. But I love it. It like 90125 really is a masterpiece of album composing. I love the beats and the rolling rhythm of the lyrics. The problem with this is that much like Yes it lacks the variety I wanted. All said and done my choice has to be Led Zeppelin’s Houses of the Holy. What Compact Disc Would I Take to a Desert Island? :: Music What Compact Disc Would I Take to a Desert Island? Tough question. What else to take? Easy Enough. I would bring as many bags of Utz Salt n’ Vinegar potato chips as possible, one copy of Earnest Hemmingway’s The Old Man and the Sea, and I figure just about any woman would suit me. Denied these things, the choice of a Desert Island Disc is made much more complicated. With nothing else to occupy my mind I need that one great disc. Much like Nick Tosches’ choice of Sticky Fingers I find this decision extremely difficult: "But Sticky Fingers is a choice as mysterious and as difficult to explain to myself as anyone else."(Tosches 4) The choices are numerous and I’m pulled and so many different directions at once it is very difficult to decide. Santiago had it easy; I’ll take the Marlin over this essay any day. The first band that popped into my head was, of course, Led Zeppelin. But, before I thought of any Zeppelin albums a few other choices came by. The first had to be Pink Floyd’s Dark Side of the Moon. This album gets as much listening time as any single Led Zeppelin album. The music is haunting, powerful, and emotional. The problem with this is it lacks some of the levity that I felt would be necessary on the Desert Island. Tracks like "Time", which is about how fast time goes by in life, would only remind of how heart wrenchingly slow time would flow on the desolate sandbar. Darkside had to go. My next thought was Yes 90125 released when the band reformed in the early 80’s. This album in my opinion is on of the greatest albums ever composed. It though my entire lifetime has consumed the lion’s share of my listening time. This album flows as almost a singular musical creation. But this lacked levity and more importantly the variety that I wanted. This one wouldn’t fly either. The next album that popped into my head was Das Efx Dead Serious. This rap album might sound like a strange choice when compared to the other albums I’ve described. But I love it. It like 90125 really is a masterpiece of album composing. I love the beats and the rolling rhythm of the lyrics. The problem with this is that much like Yes it lacks the variety I wanted. All said and done my choice has to be Led Zeppelin’s Houses of the Holy.

Corporal punishment Essay

Introduction The performance of most South African schools fluctuates from time to time. These fluctuation trends are as a result of the micro-evolutionary mechanistic changes that consistently take place throughout the country. Some schools in the urban areas perform extremely well, but some perform poorly despite the available resources that the school have. For example some of these schools have laboratories that are highly functional and also well structured for experimental as well as practical work which enhances skills in learners and also intensifies the existing theoretical knowledge that the learners have, whereas in schools geographically featured in remote areas or should I say rural schools, these resources are scarce. Privileged learners in these schools (urban) do not utilize these resources appropriately. Most learners in rural areas come from very disadvantaged homes and go to disadvantaged schools. However, the performance in some of these schools is satisfactory. Some learners academically excel irrespective of the harsh conditions they have to encounter on a daily basis. These Excellencies are facilitated by educators, parents/guardians or community members who act as â€Å"steering† in the learning environment. Educators in these schools sympathize with their learners and thus dedicate themselves in everything they do which effectively enhance as well make active the mindset of learners irrespective of their spectral backgrounds. We often hear of these educators who play such critical roles in learner’s academic life in newspapers, community radio stations and also on televisions. Some of the work of these educators may not be globally recognized but the outcomes are truly appreciated in the South African context. Distinction between resilience and excellence The restoration from form unfavourable conditions due to environmental factors is referred to as resilience. Generally resilience according to Akhurst and Sader, 2012 is â€Å"the process of recovering quickly from misfortune or illness†. If resilience was to be explained in scientific terms: It can be explained as follows, â€Å"let’s consider a typical plant cell and see what happens when you place it in a saturated solution( solution containing an excessive amounts of solutes) , the plant cell shrinks, becomes smaller in size and temporarily lose form and shape. During the process, its contents are rearranged, altered and functionality ceases to operate. When you take the same plant cell and place it in pure water, the cell regains its contents and gets restored back to its original form. The plant cell does not die because there is a â€Å"resilient force† which prevents it from total annihilation. The plant cell stays dormant until its physiological conditions get restored†. Similarly in the context of resilience in schools, some schools are able to overcome the barriers associated with learning and continue with the production of good results irrespective of external factors. Excellence in simple terms can be described as the ability to do well or the production of positive outcomes. Excellence in schools can be assessed differenty depending on the schools primary purpose. For example schools that do well in mathematics regard themselves as being excellent whereas schools that perform well in Speech and drama also regards themselves also as being excellent. So in actual fact, the description of the excellent depends on the desired outcomes of that particular context. Excellence in schools Resilience in Relation to Excellence Corporal punishment was another way of shaping learners, that mischiveously stood on the way pathway of learners with the willingness to perform to produce outstanding results. (Christie, P, 2001, p52). Even though this is very unlawful, meetings based on corporal punishments are first discussed with the parents/guardians of the learners before a decision is taken. Some learners parents/guardians agrees, specifically those with children’s from black schools. The reason why they (parents) permit educators to give corporal punishment is simply because they were raised in a similar way which in a way instilled good discipline and also helped them to be responsible individuals. â€Å"Some parents still believe that abandoning corporal punishment by the government is the reason why learners perform poorly in their subjects at school. However, according to Christie, 2012, the banning of corporal punishment could not be the reason for poor performance in South African schools, because no evidence was gathered in the apartheid era. Some resilient learners were greatly aspired by pupils in the community, these included church, and community services. This is true, for example in my case after trying to give on school . i. e. at high school, some grown up folks that lived in the same neighbourhood as me, folks that i used to hang up with and take drugs encouraged and told me that dropping out of school was not an option for a person who really wants to be successful in life. At first when they said this, i questioned them about why did they drop out at standard 8 and 9, now known as grade 10 and 11 respectively? Unfortunately these guys did history while still at school and the response they gave was a quotation from former S. A president, Nelson Mandela, which stated that â€Å"A 70 year old can never think like a 30 year old, and being 70 years of age gives you the licence and priviledge that the 30 year old can never have†. The second quotation they gave was from Malcom X, which stated that,†The future belongs to those who prepare for it today†. Well at that stage all of this was meaningless to me as a science learner, but after being triggered by a discussion I had with one of my EDPD610 colleague (Ms Moodley) during the first contact session, I started to realise the in depth meaning that these guys were trying to convey to me 11 years ago. Conditions at that time for me were unfavourable, both mom and dad were uneducated, consumed liquor and I had to watch my father beat my mother almost every weekend, the home turned into a â€Å"gladiator ring† with my elder brother and I as the referees. I was good in mathematics and science at grade 8, but when I reached grade 10, the performance started to deteriorate because I started to take drugs and abandoned my soccer training in the afternoons. I joined wrong friends and isolated myself from my primary school buddies. Unfortunately one of my science teachers, Mrs S Padayachee detected the problem and confronted me directly. I received help, woke up and dusted myself, but it was too late for me to catch up with the material covered in grade 12. I ended passing with bad symbols and decided to repeat my matric. After repeating, I passed with good symbols, enrolled for Bsc degree at UKZN, graduated, and now i’m a science educator, with less than a year experience. Generally I feel revived, resurrected, and restored and have this immense power of wanting to infiltrate knowledge to South African learners. I managed to excel academically despite the repulsive forces that acted upon me, I managed to excel in overcoming my negative thoughts, I managed to excel in making my family proud of me because i’m the only person in the family to reach matric and have a degree. Best practices of teacher’s resilience in their schools Conclusion References 1) http://web. uvic. ca/hr/managertoolkit/changeandtransition/takingchargechange. pdf( date accessed 13/03/13) 2) Botha ,R. J(2004). Excellence in leadership : The demands the professional school pricinple. Retrieved 08 March 13, 2013http://www. ajol. info/index. php/saje/article/viewFile/24995/20678 3) Christie,P. (2001). Improving school quality in South Africa: a study of schools that have succeeded against the odds. Journal of Education , 41,45,52 4) Hattie, J (2003). Teachers make a difference: what is the research eveidence.

Discrimination on Women Fight for Equality - 800 Words

Years have passed since Berkeley was a place that was governed by the male stereotype whereby close to everything was done from a male perspective. Gender discrimination in this age and era has been at an all time low but there are those people who do not wish to accept that we are all equal. There have been attempts to change the idea that some people have of the way that women or the female gender should be treated but they have seemed to be futile. This paper shall discuss the inequality that occurs by gender and its relation to some of the things that have happened in the past. In the time when people were more focused on the gender of a person, there was a lot of disparity in the way that they treated each other. Men were held more†¦show more content†¦There may have been a reduced sense of feminism but the fact that fewer people are more willing to think of ladies as important has resulted in fewer women being courageous enough to venture into politics (Rudman, Laurie, Peter 2001). The government process is seen as one that is not meant for women who are seen to be motherly and that they cannot make the hard decisions that are needed to be made for the greater good of the country and thus, if they venture into the government, they will be given jobs that are not as dependant on them as their male counterparts would be. Women are seen o be more emotional and thus believed that their judgment could be biased due to their emotional state. The fact that ladies are looked down upon may result in there being a sense of low self-esteem and this is some thing that plagues many women forcing them to take menial jobs that they are over-qualified for. Women and the female gender are seen as people that do not need to be given too much work and they should be handled with care for they are women. However, according to sociologist Allie Hochschild, the women that were given jobs in high ranking positions were still not recognized for their efforts and were even paid less than the people that worked under them (Hochschild, and Machung 67). In the family, the lady is seen as the person that should be more involved in the catering of the family by taking care of the children and the family needs whereasShow MoreRelatedWomen s Role For Women1343 Words   |  6 Pagesfelt superior to women while women are referred to as the weaker sex. Boys are raised up knowing that they are the stronger gender and that there are some tasks, which they can perform well than their female counterparts. The debate about equality for both genders has dominated the media over the years, from the times of feminism (the 1980s) to post feminism (Hokowhitu). In politics, the belief about masculinity is still a major issue that has been discussed over the years. Women fight to receive equalRead MoreGender Should Not Be A Problem1737 Words   |  7 Pagesnew problem. Women have been discriminated against for decades. This has and always will lead to a rift in the equality of women. It’s an unfair battle for equality, sure women have an amendmendment stating that all women have the right to vote , but it’s still not enough. That amendmendment only fixes half the problem. There’s still the problem of gender roles, the wage gap, and countless other problems stopping women from have the equality women have deserved for quite a while. Women like SusanRead MoreGender Should Not Be A Problem1737 Words   |  7 Pagesnew problem. Women have been discriminated against for decades. This has and always will lead to a rift in the equality of women. It’s an unfair battle for equality, sure women have an amendmendment stating that all women have the right to vote , but it’s still not enough. That amendmendment only fixes half the problem. There’s still the problem of gender roles, the wage gap, and countless other problems stopping women from have the equality women have deserved for quite a while. Women like SusanRead MoreDescribing Canada1135 Words   |  5 Pagesencountered many defining moments throughout its history. During the twentieth century women of Canada have undergone numerous moments that brought about significant changes for themselves. The most prominent moments, which brought about the most change and significance are: the persons case of 1928, the womens liberation movement throughout the 1960s and 70s and the ratification of the Treaty for Rights of Women (CEDAW) in 1981. 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Women had no say when it came to politics, they couldn’t own property, they were not allowed to do many jobs, and they couldn’t even speak in front of men. They had the duty to be a mother and raise their chil dren but even thought they had this responsibility it was the husband who had the completeRead MoreThe Advancement For Equality Of Women974 Words   |  4 Pagesfeminism is not that women are above men, it is instead the advancement for equality of women. Thesis Statement: The actual meaning of feminism is not that women are above men, it is instead the advancement for equality of women. Organizational Pattern: Categorical I. Intro A. Attention Getter: With a show of hands how many of you all think feminists believe that men are evil and that females are the superior gender? B. Thesis Statement: The actual meaning of feminism is not that women are above men,Read MoreThe Challenges Of Equal Ness1615 Words   |  7 PagesPakistan by Taliban gunmen, for speaking up for her rights, rights of women and wanting an education, to learn (NBC News, 2013). This was a story that has been played around the world. A story that could be looked at by women as a treat, or more as a time to stand and fight for their rights, the right to the same privileges as men. This young lady who lived through the pain, and near death experience has become a stand for women, not just to be educated, but the right for equal rights, to be fareRead MoreDoes One Gender Incite Fear Over Another?987 Words   |  4 Pagesa factor? Discrimination may not be a conscious decision, but everyone does it at one time or another. Some people may not be aware they are showing bias and some knowingly do it. 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Political Views Of A Democratic Country - 950 Words

Political views refer to a body of ideas that points the beliefs of people of a nation, the political system of governance and all other aspects of the governance of a country. In a democratic country like America, people have a say or have personal political views on matters affecting them directly or indirectly and such idea may or may not influence the governing system already in place. Politics involves the activities that that focus on to controlling or directing the actions and policies of a government or acquisition and keeping power in a government with the aim of achieving already preset goals. This paper focuses on my personal political views and interests by critically analyzing what is already in place and what ought to be done that is not yet in place or rather the adjustments to be done. The American governing system is one of the best in the world especially with the system of checks and balances which ensure that no one body acts without the consent of the other. The notion of â€Å"Separation of Power† is well spelt out in the American Constitution with well-defined boundaries and or rather limitations and extent of actions of each body. The executive, the legislature and the congress are all very significant and play vital roles to sustain the long lasting governing system. The stability of the United States is based on this three governing bodies. It is easy for a country to fall when it has a one-body system of governance or two in aShow MoreRelatedDemocracy And The Right Of Voting901 Words   |  4 Pagesfamiliar with it. Democracy is a topic of debate now-a-days and most of the research about it has already been conducted through surveys and choices of people. Democracy is a system that assures the people’s part in taking decisions of state and political affairs through the right of voting. The generic definition and concepts of democracy are easy accessible on many websites online. Democracy is a on which almost 70% of the research is already done and further research is mostly taken in order toRead MoreCompetitive Authoritarianism And Political Authoritarianism869 Words   |  4 Pagesnot quite a democracy, but it has democratic institutions in place and incumbents cannot reduce them. 2. perils of presidentialism and democratic failure Juan Linz Presidentialism can increase democratic failure by promoting zero-sum politics, it has potential to become a divided government or dictatorship, potential to can permanently exclude minorities from the executive because of no representation. His thesis also says Presidentialism prevents democratic consolidation because the PresidentRead MoreThe Benefits and Problems of Democracy1750 Words   |  7 Pagesmay be a variety of flaws in a democratic government, it is still a far more suitable choice of governing as opposed to alternate forms of government. Widely accepted as the most popular and working form of government, democracy is, in a nutshell, a political system in which the power is given to the popular vote of the people. In fact, the very origins of the term democracy hail from the Greek term for ‘ruled by the people’. The basic form of our modern democratic system originated in Greece asRead MoreThe First Wave Of Democratization1177 Words   |  5 Pagesthose wh o steered towards democratic practices and views. Samuel defines democracy and democratization using several different concepts. He divides democracy’s definition into three parts â€Å"1) sources of authority for government, 2) purposes served by government, and 3) procedures for constituting government†. He then provides several examples of how democracy worked in different countries in terms of democratic or undemocratic status (variances amongst democratic political systems) and how it finallyRead MoreJapan s Change Of Modernity And Democracy992 Words   |  4 PagesThere are many things that contributed to Japan’s change to modernity and democracy whether it was between the political parties or if it was between their cultural system and the people s rights. Before Japan changed to a more modern and democratic society it was a feudal government structure based on Confucius views which was during the Tokugawa period. During the Tokugawa period there was a s eparation between the social classes which was categorized in four groups the samurai, peasants, artisansRead MoreThe Current Chinese Government Fits Into The Category Of Authoritarian Regimes856 Words   |  4 Pages The current Chinese government fits into the category of Authoritarian Regimes because Chinese government just use the coercion to limit political pluralism in order to maintain their power, but allows some social pluralism and does not use ideology or coercive mobilization to shape citizen’s interests, or support for the regime. However, China had been in a category of totalitarian regimes once after the World War 2 ended. After the world war 2, under the Mao’s control, China’s sovereignty imposedRead MoreDemocracy has in the 20th and 21st century grown in popularity, which has been credited due to the600 Words   |  3 Pageswill be spoken about, especially what affect the ‘waves of democracy’ has had on new democratic systems. Mo reover the affect that institutional design plays in maintaining a stable political system, in terms of representation and participation, and what this has had on states which have become democratic. This will be followed by a perspective from Juan Linz, a noted political and social scientist, and his view on presidentialism. Furthermore this essay will look at the advantages of a presidentialismRead More Democracy: An Analysis Essay1358 Words   |  6 Pageshis statement, this paper will examine the problems of democratic governments using specific examples, and compare it to the failure of fascist governments in Nazi Germany and Italy and communist governments in the Soviet Union and China. Theoretically, democracy is a stable form of government where power is in the hands of the people. In a democracy, people have the liberty to elect officials that best represent their interests, and political institutions exist as a result: Benjamin Constant arguesRead MoreCitizen Participation : An Individual Choice956 Words   |  4 PagesIn a democratic government, citizen participation is essential and beneficial in order to ensure everyone’s opinions will be heard and represented. With a wide range of morals, socioeconomic statuses, personalities, and knowledge existing among the American population, citizens’ participation in the democratic system range from dedicated, involved, and uninvolved. The upbringing and life situation of individuals directly affects their governmental decisions including their stances on issues the countryRead MoreThe Importance of External Influences in Building a Democracy1315 Words   |  6 Pagescircumstances that have been important in the past for building a democracy for current democratic regimes. Pinkney studies seven comparatives and their theories for the cause and effect of democracy and identifies their pros and cons. The most important of these conditions stands in the external influences and foreign participation in building the state as a democracy of a non-democratic country. In his â€Å"Conditions Conducive to Democracy† chart Pinkney introduces the condition

Anti Corruption Watchdog Transparency International Ranks...

Corruption is a treacherous plague that has a wide range of volatile effects on societies; it undermines democracy and the rule of law, which leads to violations of human rights, distortion of markets, and it erodes the quality of life allowing for organized crime, terrorism, and other threats to human security. Corruption is universal, as it is found in all countries, yet it does the most damage to the developing world. Corruption hurts the poor disproportionately by diverting funds intended for development, undermining a government’s ability to provide basic services, feeding inequality and injustice and discouraging foreign aid and investment. Corruption is rampant in India, as it has taken a prevalent role of Indian politics and bureaucracy. Corruption in India has been one of the most interesting and discussed problems in modern political history. Anti-corruption watchdog Transparency International ranks the national perception of corruption in India to be 85th in the wo rld out of 175 positions, indicating that India’s governance is corrupt and isn’t accountable to its citizens. There is a plethora of factors encouraging corruption and not every factor can be discussed, or else the narrative would run into volumes. Only a few factors can be identified to highlight the impact of corruption (Shekhawat, 2005). It may seem that the presence of widespread corruption throughout the India conjures notions that the country is inherently dysfunctional, but for politicians,Show MoreRelatedGraft and Corruption3534 Words   |  15 PagesA. INTRODUCTION In 1988, graft and corruption in the Philippines was considered as the biggest problem of all by Jaime Cardinal Sin, the Archbishop of Manila. Then President Corazon C. Aquino likewise despaired that corruption has returned. 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Opportunities And Threats For Building Environmental Sciences Essay Free Essays

Every individual on Earth is exposed to environmental radiation. This radiation consists of natural radiation, cosmic radiation and external radiation. External radiation derives from the medical activities, such as X raies or accidents in atomic workss, while natural radiation derives from the decay of radioisotopes in dirt or in bedrock. We will write a custom essay sample on Opportunities And Threats For Building Environmental Sciences Essay or any similar topic only for you Order Now These radioisotopes may be answered either as a consequence of human activities, such as Strontium-90 ( A ­90Sr ) and Technetium-99 ( 99Tc ) or with physical presence like Uranium-238 ( 238U ) . The decay of 238U green goodss Radium-88 ( 88Ra ) and the decay of 88Ra, eventually produces Radon-222 ( 222Rn ) . Since the 2nd portion of twentieth century when plentifulness of mineworkers suffered from lung malignant neoplastic disease, a batch of research has been conducted on the effects of Rn on worlds. The last 20 old ages and more, the effects of Rn in residential sector have been investigated. Because of this the undermentioned study was necessary to discourse the issues with Radon in homes. 2. Radon, beginnings and effects 2.1 Radon Radon-222 is a chemical component which has atomic figure 86 and belongs to baronial gases. ( Table 1 ) What is more, it has 3 chief characteristics: it is colorless, odorless and tasteless, and as a consequence it can non be traced by human senses. In add-on, it is chiefly in gaseous stage and and its half life is 3.83 yearss. Al-Saleh ( 2007 ) writes that the half-life clip of Rn makes it more of import than other isotopes ( 220Rn, 219Rn ) . Because of the fact that Rn is radioactive, it comprises a risky component for human wellness. Table 1 Beginning: hypertext transfer protocol: //en.wikipedia.org/wiki/File: Periodic_table.svg Finally, radon concentration is measured in Becquerel per three-dimensional metre ( Bq/mA ­A ­3 ) in SI and harmonizing to UNSCEAR ( 2006 ) ; typically Numberss for indoor and out-of-door concentration are 100 Bq/ mA ­A ­3 and 10 Bq/ mA ­A ­3 correspondingly. A 2nd unit for radon concentration is picocuries per liter of air ( pCi/L ) and the relationship between the two units is: 1 pCi/l is tantamount to 37 Bq/m3. 2.2. Radon out-of-doorss As mentioned before, Rn is produced in dirt or in bedrock from the decay of Uranium. Because of its gas stage, Rn is diffused in permeable dirts through clefts and so it can be released to the ambiance. When the component enters in atmosphere, it is dispersed and so the concentration is really low. Therefore, radon out-of-doorss is non unsafe for human wellness. 2.3 Radon indoors Harmonizing to BRE ( 1991 ) , â€Å" Rn enters in edifices chiefly by air flow from the underlying land. † Radon is the densest gas, as a consequence to be concentrated below edifices. In add-on, the different force per unit area between the dirt and the indoor may do clefts on the ground-floor concrete slab which are the way that radon gas discoveries to come in the edifice and that difference is besides the necessary force which radon demands to come in. ( Figure 1 ) EPA ( 2012 ) indicates that good H2O and edifice stuffs are besides means with which Rn is transferred into houses. However, it continues reasoning that Rn through stuffs is non unsafe every bit good as H2O, when its beginning is surface H2O. After come ining inside the house, Rn is trapped and it starts to disintegrate. This poses a menace for residents because ; as UNSCEAR ( 2006 ) argues â€Å" radon and its decay merchandises cause lung malignant neoplastic disease † . Khan ( 2000 ) explains that this phenomenon is happened because the restricted airing inside the houses permits Rn and its girls to make high degrees of concentration. Therefore, they enter in human organic structure through respiratory and they are deposited in the lungs. Finally, Rn and its girls, particularly ephemeral offsprings: Polonium- ( 218, 214 ) , Bismouth-214 and Lead-214 emit alpha atoms which lead to malignant neoplastic disease. As WHO ( 2009 ) references, Rn is deemed the 2nd cause after smoking for lung malignant neoplastic disease in the general population. Figure 1: all possible waies which radon can follow Beginning: BRE 1999 3. Radon: Protective-remedial steps EPA ( 2012 ) writes that new edifices should be built with Rn protection steps and should besides be tested for Rn concentrations after tenancy. BRE ( 1999 ) , EPA ( 2012 ) and WHO ( 2009 ) reference that all the bing edifices should be tested for radon concentration. However, as EPA ( 2012 ) argues, there is non a degree of radon concentration that it can be deemed as a safe figure. This is explained by WHO ( 2009 ) which writes that the invariably exposure to â€Å" low or moderate † Rn concentrations causes more lung malignant neoplastic disease instances than exposed to high. Therefore, even if homes have concentrations lt ; 4pCi/L, remedial steps should be implemented for cut downing the figure to the lower limit. 3.1 Protective steps for new homes Basic Rn protection Initially, new homes can be protected by implementing a radon-proof barrier between the dirt and ground-floor concrete slab. This technique is named â€Å" basic Rn protection † ( BRE 1992 ) and can be used to a suspended, unmoved and ground-supported concrete floor. In peculiar, a damp-proof membrane is installed between concrete floor and floor toping ( Figure 2, 3 ) or under them ( Figure 4 ) which secures the airtightness of the house. It is significant to be mentioned that this method should be implemented decently because there are many dangers like damaging the uninterrupted signifier of the membrane. In add-on, this membrane should cover any wall pits so as to be a barrier for Rn and by and large be uninterrupted to the whole building site. If any specific country demands to be sealed or lapped, chiefly articulations, it should be done right. Therefore, craft should be high-quality. Following these stairss, the edifice lessens the infiltration through clefts or gaps an d it is protected by Rn. Figure 2: damp-proof membrane Figure 3: damp-proof membrane in suspended concrete floors in unmoved or land supported concrete floor Beginning: BRE ( 1991 ) Beginning: BRE ( 1991 ) Figure 4: damp-proof membrane in unmoved Figure 5: full Rn protection in suspended or land supported concrete floor concrete floors ( natural airing ) Beginning: BRE ( 1991 ) Beginning: BRE ( 1991 ) Full Rn protection BRE ( 1991 ) argues that the above method is non so effectual while, BRE ( 1999 ) writes that in countries with high concentrations more techniques should be used during building. These techniques are the usage of Rn sumps and usage of natural airing in suspended concrete floors. Natural-Mechanical airing In suspended concrete floors below the slab, natural airing system can be constructed as in figure 5. Meanwhile, the place of fans can besides be created because there are possibilities that the natural airing consequences may be unequal. Therefore, this method combines characteristics of natural and mechanical airing ; nevertheless its effectivity is non certain. Radon sumps Radon sumps are particular buildings which are placed in dirt below the slab in ground-suspended floors. There are two sorts of sumps: depressurised and pressurised sumps. The former has as a consequence the extenuation of Rn from dirt to the ambiance, while the latter leads the Rn gas off of the dirt where the house is placed. They can besides be distinguished in two sub-categories: passive and active. ( Figure 6, 7 ) Passive sump systems do non use fans while active sump systems do use. The map of Rn sumps is based on I ) the stack consequence and two ) the air current consequence. These two phenomena secure that the motion of the radon-laden air throw pipes will be natural. The stack consequence is based on the construct that the warm air moves upwards. The interior decorator has to procure that the pipes used for breathing the radon-laden air will travel through warm topographic points of the house. As a consequence, the air inside the pipe will be warmer and will be given to travel upwards, making a drive force inside the pipe. Therefore, the Rn gas in sump will be emitted to the ambiance of course. ( BRE 1996 ) Figure 4: Typical Passive Sump Figure 7: Typical Active sump Beginning: BRE ( 1996 ) Beginning: BRE ( 1996 ) The air current consequence is related with the phenomenon that when air blows on or above a surface, tends to make a zone of negative force per unit area. In instance of Rn sumps, the air current pulls the air from the airing terminus off. Due to this, a likewise impulsive force is created and the Rn gas from the dirt dispels in the ambiance. ( BRE, 1996 ) Depressurizing sumps have the possible to work as a â€Å" vacuity pumps † . The different force per unit area between sump and air, and the at the same time upward air flow in pipes have as a consequence the dirt gases to come in into the sump and afterwards to be driven to the air. The inactive depressurising sumps ( figure 8 ) do non hold a merriment. However, as BRE ( 1999 ) , WHO ( 2009 ) reference, when the decrease is non satisfactory so an in-line fan should be installed in the pipe in order to increase the air flow. The new system will be called active depressurising. ( Figure 9 ) Owing to this, BRE ( 1999 ) , WHO ( 2009 ) propose that when constructing a inactive sump system, builders should put in the system with a manner to be easy transformed subsequently, if it will be necessary. Active pressurising sumps have as a consequence to take the Rn from the house. A fan located in the pipe blows air in the sump which consequences in the decrease of the sump ‘s force per unit area because the air is removed to the land. Therefore, the air of the house tries to equilibrate the force per unit area and this eventually leads radon out of the house. ( BRE 1996 ) Figure 8: Passive depressurizing sump Figure 9: Active depressurising sump Beginning: WHO ( 2009 ) Beginning: WHO ( 2009 ) 3.2 Remedial steps for bing homes In bing homes the remedial steps do non differ from the protective steps for the new buildings. The execution of sumps may be hard and expensive but it is a remedial step with certain results. However, the simplest mitigating step is the waterproofing of the clefts and gaps which permit Rn gas to come in the house. 4. Discussion 6. Decision As mentioned before, there is no peculiar degree of Rn which could be deemed as a safe degree. In add-on, as Jelle ( 2012 ) indicates there is neither a manner of ciphering exactly the Rn which enters inside house nor the exact decrease after the execution of remedial or protective steps. This is because Rn is a gas and it can work even the smallest cleft or hole to come in a house. Therefore, applied scientists, builders, interior decorators and by and large everyone who is involved in a building, should work with professionalism in order to guarantee the best consequence. How to cite Opportunities And Threats For Building Environmental Sciences Essay, Essay examples