Injection molding essays

Injection molding essays Injection molding is a process used to form products from plastic. The process requires a mold, clamping component, injection unit, and some sort of plastic. As time has advanced so has injection molding by developing new techniques and new products to aid in the manufacturing of the injection molded parts. Injection molding was used as early as the 1860s. It can be used to form many different products. Whether the products are small, large, complex, or simple they can be produced. Injection molding has derived from metal die casting. However, the polymer cant just be poured into a mold, it has to be forced into the mold cavity. The polymer is forced into the mold and pressure is held on it to avoid shrinkage in the mold cavity as it cools. Injection molding is capable of producing a large number of parts with very high precision. All thermoplastics except polytetraflouroethylene (PTFE), polyamides, and some aromatic polyesters can be used by the injection molding machine. Some thermosetting plastics can also be used. The typical fabrication process can be done by one of two different types of injection molding equipment. Either a plunger, or reciprocating screw type machine can be used. The process starts by melting the polymer resin. Once the resin is melted, a mold is placed in the clamping unit. The clamping unit is to hold the mold together. The plunger or reciprocating screw then force the polymer resin into the mold. In the plunger operated machine, the plunger is hydraulically operated. This forces the plastic through a heated area, where it is then spread into a thin layer by the torpedo. Then the melt comes to the nozzle and is injected into the mold. The reciprocating screw rotates, this moves the polymer resin forward for injection. As the screw rotates it acts to melt, mix, and pump the polymer to prepare it for injection. The reciprocating ...

How to stay focused at work during the holidays

How to stay focused at work during the holidays Every year, as the weather gets colder and holiday shopping ads start appearing on TV (though admittedly those start showing up around Labor Day now), even the most diligent and focused employees find their attention wandering a bit. There’s a lot going on- travel plans, potluck food appearing like magic in the office, everyone feeling a little more festive and social- and the daily grind can get lost in all of that. So how do you keep on top of your actual job, despite holiday disruptions? Be prepared to shut out distractions.This doesn’t mean you have to hunch over your desk like Ebenezer Scrooge, frowning disapprovingly at your cheerful slacker colleagues. It just means finding ways to keep your own attention focused on the daily tasks you need to accomplish. For some, that means wearing noise-canceling headphones while working on a project or setting blocks of â€Å"head down† time where you don’t allow yourself to be distracted by things like online s hopping, social media, or extracurricular conversations with coworkers. It’s time to be honest with yourself and figure out what works best at keeping you on-task. If that means setting calendar reminders for everything, do it. If it involves using an app to keep you from wandering to particular distracting websites, go for it.Try to avoid multitasking, because that can lead to†¦flexible attention span. If you’re giving all of your effort to a particular task, you’re more likely to get it done. Even if you’re usually an A+ multitasker, try to limit the number of things you’re doing at once.Lean in to (some of) the distractions.This may seem counterintuitive to #1, but it’s also important to embrace the non-work stuff as part of your day. It’s far more realistic to plan for small bursts of non-work activity than to think you’ll be able to shut it out completely. Be sure to schedule some breaks when you can check those fligh t prices or stop and grab a cookie with a colleague. If you start making the down time part of your workday (in small chunks), it’ll be easier to move from â€Å"holiday mode† back to â€Å"work beast mode.† Moderation is key here- it’s not an â€Å"hour of work, hour of goofing off† proposition. Think of it as more like a standard coffee break, but instead you’re taking a few minutes to check out your Facebook friends’ pets in various holiday sweaters.Come up with a â€Å"rest of year† plan.Chances are, your workload has a combination of things that will need to be accomplished either now or in the near future, and things that can reasonably wait until January. It’s time to sit down and make a comprehensive list of must-dos, should-dos, and can-do-laters. Your to-do list should be realistic and have milestones/deadlines included wherever possible so that you can plan your time. If you need to, talk through your end of y ear priorities with your boss to make sure you’re hitting everything you need to do before everyone checks out. This has the added benefit of showing your boss how organized and driven you are, even as everyone else might already be starting to slip a little.While you’re making the list, also make note of what you’ll need from other people. This time of year people can be in and out of the office, so if there’s something important that you’ll need from Andy by mid-December, start thinking (and talking) about it now in case Andy’s planning on taking time off. If you’ve waited until the last minute and then you’re faced with Andy’s â€Å"Bye, see you next year!† Out of Office message, it’s too late.Reset your work-life boundaries.Setting a clear line between your work day and your personal time can help you stay focused at work if you know you can get all the fun stuff or personal logistics accomplished later . If you’re usually a â€Å"stay late† kind of person, start leaving at a set time every day. If you’re usually a â€Å"wander in a little late in the morning† kind of person, start putting in extra effort to get to work on time. And whenever possible, you should avoid taking work home- instead, set a realistic workload and to-do list for the official workday. That way, family/friend/personal time gets its own spotlight in your day, separate from work, and you’ll feel less inclined to â€Å"catch up† on the outside stuff while you’re at work.Don’t forget to take care of yourself.The time leading up to the holidays can often take a physical toll as well, if you’re indulging in special food, more drinks than usual, and/or later bedtimes to account for social activities. All of those can set you up for failure at work and make you feel lousy, so try to set up some extra healthy habits to compensate this time of year.Take sh ort walks and exercise breaks instead of coffee breaks.Stay hydrated (and not with egg nog).Practice some desk yoga.Aim for half an hour more sleep.Bring a healthy lunch so you can sneak in some extra calories later.These can all help you feel better during the workday and more ready to devote your time and mental sharpness to accomplishing what needs to be done.No matter what the distractions are between Thanksgiving and the New Year, staying organized is not a lost cause. It’s all about being realistic and developing some extra coping mechanisms to defeat those â€Å"it’s the holidays, woo!† impulses and stay productive. Fully embrace the good cheer of the season- just make sure it’s on your to-do list, next to all the other things you want to get done.

Cleaning Oil Spills with Magnets Assignment Example | Topics and Well Written Essays - 750 words

Cleaning Oil Spills with Magnets - Assignment Example The EVTN voraxial oil separator development by Fort Lauderdale uses the centrifugal by the gravity force to separate two or more different liquids. It was used during the 2010 BP Oil Spill, with effects such as the provision of industrial and environmental separation technology, the development of the company for both sells and manufactures, and the establishment of the Florida precision aerospace company. The long-term effect of this oil spill, which is considered as the largest accidental marine oil spill in the history of the petroleum industry, is hydrocarbon poisoning in the environment. However, it also paved the way for the establishment of the Exxon- Valdez voraxial separator. The long-term effects of magnetic soap are a high rate of marine and birds survival, the establishment of the industrial chemist, and the use of electrical melting point, and conductivity to clean the environment.

Curriculum and Methods for Early Childhood Educators Essay

Curriculum and Methods for Early Childhood Educators - Essay Example The realistic goals is to help a child achieve intellectual growth, develop a positive self concept, increase proficiency in skills in writing, reading, thinking, listening and speaking and to increase skills involved in physical coordination. It also helps a child to enlarge his world of experiences, ideas, things and people. These help the child to increase aptitude in dealing with emotions, societal situations, self bearing and independence (Little, 1979). Working with Pre-K age group children calls for good class practices. Pre k/Pre kindergarten, being the first official academic classroom-based education environment that a youngster habitually attends, begins between the ages of 3-5 depending on how long the program is. It combines the focus to harvest a child’s cognitive, social, physical and emotional developments. This means it reflects an understanding of child development principles providing opportunities for the children to acquire concepts and skills involving de cision making, problem solving, questioning, evaluating and discovering. An early childhood educator should therefore, combine philosophies, theories and concepts that endorse the children with opportunities to develop in all dimensions prior to basic education and future life. Direct instruction The direct instruction method is an approach whereby stems of behavior and social training techniques view child education as an input from the environment. The educator presents information to the class and whole groups. He or she structures or drills a practical lesson where they teach discrete skills and isolate facts. These lessons are fast paced and ensure consistency in classrooms (Guide, 1998). Being skill oriented, it emphasizes on the use of small groups, face to face instructions by aides and teachers carefully articulating lessons which cognitive skills are sequenced deliberately after being broken down into small units and taught explicitly. Direct instruction offers one of the most empirically effective and validated curricula for all types of children. These are the gifted, the average, disadvantaged and the developmentally delayed. It stands on the certainty that one should not introduce the subject matter to children when they are developmentally unprepared (little, 1979). For developmental appropriateness, the student teacher interaction is highly emphasized to improve children’s self esteem and improve their self expectations. The National Association for the Education of Young Children in 1998 stated that outdated practices that included extensive whole group and intensive drill and practices on isolated skills were not effective and suitable. Direct instruction though is always in small groups, which provide the kids with the opportunity to interact and participate with other kids while receiving their teacher’s individual attention. The small groups become learning communities allowing the children to share individual and group goals , valorized identities and moral principles. The length of lessons in direct instruction is adjusted according to the attention spans and activity levels of children in different ages. Faulty instructions are the overwhelm causes of children crippling intellectually, and if a student has not learned then a teacher has not taught. Therefore, direct instruction has a consistency with the literature on how to design instructions that children induce or

Identifying Salmonella Choleraesuis Essay Example for Free

Identifying Salmonella Choleraesuis Essay The purpose of this study was to determine what an unknown bacteria was using several different microbiology lab techniques including an API test, an oxidase test, a gram stain, a hanging drop slide, and morphology identification. The unknown bacterium, which was contaminated with Serratia marcescens, was isolated by streaking the bacteria solution to single colonies. The isolated unknown white bacteria, had the appearance of circular form, convex elevation, entire margin, elongated cocci. The tests than showed that the bacteria was gram-negative, non-motile, and was identified as a Salmonella species bacteria, Salmonella choleraesuis. Introduction When applying biology to real world cases, it takes numerous tests to be able to identify exactly what a type of bacteria an unidentified bacterium is, whether it is a bacterium that is causing a person to be ill or a bacterium that is being studied in a laboratory. Often times a bacteria is taken from a contaminated sample that may contain more than one type of bacteria and therefore the specific bacteria that is to be identified has to be isolated. This can often be done by streaking the sample to single colonies. The individual colonies can then be put through several different tests that allow one to identify distinctive aspects of the bacteria. Some examples of these tests are a gram-stain and an API test. These tests allow one to figure out what properties a bacteria strain contains, such as gram negative or gram positive with the gram staining test, or what bacteria an unknown is based on positives and negative of the API test. The results of API tests, will show extremely accurately what a bacteria is based on previous tests performed. One such bacteria than can be identified is Salmonella choleraesuis. There have been many studies done where the particular strain of Salmonella needed to be identified so that a vaccine could be found. In one such study, the strain of Salmonella Choleraesuis had to be identified in order to then use live Salmonella choleraesuis to reduce the seroprevalence and the number of Salmonella carrier pigs at slaughter (Schwarz et al, 2011). By being able to identify the specific strain of the species Salmonella, scientists were about to prevent Salmonella from being passed on through pigs because of the Salmonella choleraesuis vaccine. Identification of a specific bacteria can help scientists make so many improvements in getting rid of deadly bacteria. Materials and Methods This lab was performed over several different days in order to utilize several different techniques in identifying the unknown bacteria. A tube that contained a red species S. marcescens and a white unknown bacteria was streaked to single colonies onto an agar plate using an inoculating loop. The plate was placed in the 37Â ° incubator for 24 hours. Once incubation had occurred the single colonies were used for the different microbiology lab techniques. The first of these techniques used was to determine what the morphology of the unknown bacteria was. The second of these tests was a gram stain. This test was done in order to determine if the unknown bacteria was gram negative or gram positive. The third technique used was a hanging drop slide, which was prepared using another single colony and a light microscope at 100x resolution, in order to observe the bacteria’s motility. The fourth test used was an oxidase test, which was also performed using another single colony of the unknown bacteria. This was done by placing the bacterial colony on filter paper and adding drops of oxidase reagent. The filter paper was then observed to see if it changed blue or not, in order to see if the bacteria produced cytochrome c oxidase. The final test used in the experiment was an API test. To begin the API test, a solution with bacteria and 5 mL of sterile saline, had to be made with a turbidity the same as the McFarland No. 3 (BaSO4) standard. This was done by adding loopfuls of bacteria to the saline solution, mixing the solution on the vortex, and then comparing the turbidity to the McFarland No. 3 standard, until the tubes were both at the same cloudiness. This created solution was then used in the API test by adding specified amounts to each of the microtubes on the API strip. For each of the microtubes whose names were not underlined or boxed, the tubes were filled to where the microtubes met the capsule. In the microtubes whose names were underlined, the microtubes were slightly underfilled, and then the capsule was filled with mineral oil in order to create and anaerobic environment. The last of the microbes were the ones whose names were boxed. In each of these the microtube and the capsule were filled all the way up with the bacteria. The API test strip was then placed in the 37Â °C incubator for 20 hours. After this time, observations were made about each of the different microtubes based on a given summary of results chart for the API test. A select number of microtubes had to have a few reagents added such as 10% ferric chloride, Barritt’s A and B solutions, Kovacs’ reagent, nitrate test reagent, zinc, and hydrogen peroxide, in order to see how the specific microtubes reacted at that time. Once the API test was performed, the negatives and positives found for each of the microtubes was used to identify the unknown bacteria using an identification table that showed the positives and negatives of many known bacterias. Results In the first part technique used in the lab, the morphology of the unknown bacteria colonies was found to be circular form, convex elevation, and entire margin. The second technique used, gram-staining, produced pink bacteria, which had the appearance of elongated cocci. The pink color indicated that the unknown bacteria was gram-negative. In the third technique, the hanging drop slip, there was not true motility and instead only Brownian movement. In the fourth technique, the oxidase test, the filter paper did not turn blue. In the final test, the API test, the results (Fig. 1) shows that the unknown bacteria being studied was Salmonella species, or more specifically, Salmonella choleraesuis. (Fig. 1) The API strip results after 20 hours of incubation at 37Â °C Discussion Through the use of the API test, the results most accurately showed that the bacteria was Salmonella species. This is what the bacteria was, however, it was a specific kind of Salmonella, S. choleraesuis. In the results of the tests, there were four different microtubes that contained different results than in the identification table. In each of the these cases, the API test showed positive results when the table showed negative results. Just because these didn’t match exactly, didn’t mean that the experiment didn’t work right. Each organism is different and because of this will have different reactions at times. In each of the cases, there was a small percentage that the results would be different than the identification table said it would be. With that, the Salmonella species all together was able to be identified better because, in general the different strains of Salmonella each come from the same species. There could also have been slight error when the mi crotubes were filled up. There may have been times when the tubes were overfilled or underfilled or air bubbles may have gotten into the tubes changing the results. Overall, the results were fairly accurate since the Salmonella species was able to be identified. The other tests used in the experiment were also useful in helping identify that S. choleraesuis was the unknown bacteria. It can be shown through previous tests that S. choleraesuis and Salmonella strains have similar characteristics to those found from the techniques used in this lab. In several cases it is shown that Salmonella strains are gram-negative (Kempf et al, 2012). The fact that S. choleraesuis fit the characteristics of previous studies helps show that bacteria was found correctly when preforming the different techniques. References Agbor, T. A., McCormick, B. A. (2011). Salmonella effectors: Imortant players modulating host cell function during infection. Cell Microbiology , 13 (12), 1858-69. Schwarz, P., Kich, J. D., Kolb, J., Cardoso, M. (2011). Use of an avirulentlive Salmonella Choleraesuis vaccine to reduce the prevalence of Salmonella carrier pigs at slaughter. Vet Rec , 21 (169), 553.

Summary of Life of Pi by Yann Martel Essay -- essays research papers

The novel, Life of Pi, by Yann Martel, is about a young boy, Pi, and his survival on a lifeboat drifting in the Pacific Ocean. It is written in three sections, the second part, spanning from chapters 37 to 94, concerns the events on the lifeboat and what Pi experiences. This part contrasts part 1 as Pi is not alone, the only human, left to dwell in his own thoughts and be self-sufficient. Whereas in part 1, Pi is living in India, surrounded by his family and friends, not alone in the slightest. To sustain interest in this middle section of the novel, Martel uses a variety of techniques. This is needed as the reader already knows that Pi survives the ordeal, as confirmed in section 1, therefore the journey in the Pacific must be fascinating to keep the readers interest. An example of this would be Pi?s decision to tame the tiger, Richard Parker, in which was trapped on the lifeboat with him. This occurred in chapter 57 of the novel. The task that Pi sets out to achieve creates suspense, as there is the ever-present danger of the wild tiger. ?The first training session was over. ...

Dissolved Gas Analysis Method

FINAL YEAR PROJECT 1 PROGRESS REPORT 1 AUTHOR’S NAME:Ruban s/o Paramasivam STUDENT ID:EP083765 REPORTING PERIOD:18TH JUNE 2012 – 15TH JULY 2012 SUPERVISOR’S:Mr. John Steven NAME PROJECT TITLE:Dissolved Gas Analysis in determining Transformer Faults SUBMISSION DATE:16TH JULY 2012 1. 0 Background of Studies Oil sampling analysis is a useful, predictive, maintenance tool for determining transformer health. DGA is identified as one of the sufficient method of oil sampling in evaluating transformer health. The breakdown of electrical insulating material inside the transformer generates gases within the transformer.The identity of gases being generated is useful in any preventive method maintenance program. DGA method involves oil sampling method and testing the sample to measure the concentration of the dissolved gases. The two typical principal cause of gas formation within an operating transformer are electrical disturbance and thermal decomposition. All transformer s generate gasses to some extent at normal operating temperature. Insulating mineral oils for transformer are mixtures of many different hydrocarbons and the decomposition process for these hydrocarbons are complex.During this process, active hydrogen atoms and hydrocarbons fragments are formed. These fragments can combine with each other to form gasses such as Hydrogen (H2), Methane (CH4), Acetylene (C2H2), Ethylene (C2H4), Ethane (C2H6) and many more. The gasses listed are considered combustible. The rate at which each gas are produced depends on the temperature. Therefore, the concentration of the individual dissolved gasses found in transformer insulating oil may be used directly to evaluate the transformer and suggest any faults within the transformer.After samples have been taken and analysed, the first step in evaluating DGA result is to consider the concentration level of each gasses. Basically, any sharp increase of the key gasses stated above indicates potential problem wi thin the transformer. The type of faults which the key gasses can produce will be further discussed in the study. Literature Review 2. 0 Dissolved Gas Analysis Power Transformers are filled with oil which acts as a dielectric medium and also as a heat transfer agent besides being an insulator to the transformer. The insulated oil is made up of saturated hydrocarbons.These molecules are connected together to form a chain liked manner by carbon and hydrogen. [1] Table 1: Chemical structure of insulating oil and fault gases During normal use, there is a slow degradation of mineral oil which produces gases that dissolve in the oil, but when there is a electrical fault, the oil starts to degrade and temperature rises. Different patterns of gases are generated due to different intensities of energy dissipated according to the type of faults. This happens because of the broken chain of the chemical structure of the insulating oil.Therefore, the broken chain will form its own chemical struc ture which is known as hydrocarbon gases or also known as fault gases. It can be divided into 3 categories which is Thermal heating, Corona and Arching, The most severe intensity of energy dissipation occurs with arching, followed by thermal heating and the least severe is Corona. Figure 1 illustrates the process of breaking chain within the insulating oil chemical structure of the fault arcing, thermal heating, and corona. Figure 1: Breaking chain process of fault arcing, corona, thermal heating and pyrolysis of celluloseGases which are produced by the degradation of oil because of the increase of temperature may be caused by several factors: [2] * severe overloading * lighting * switching transients * mechanical flaws * chemical decomposition of oil or insulation * overheated areas of the windings * bad connections which have a high contact resistance The type of gases present in an oil sample makes it possible to find the type of fault that occurs in the transformer. This is done by evaluating the concentration of gases present in the oil during maintenance.The type of fault and its characteristics are as below [3]: * Arcing Arcing is the most severe of all fault processes. Large amount of hydrogen and acetylene are produced, with minor quantities of methane and ethylene. Arcing occurs in high current and high temperature conditions. Carbon dioxide and carbon monoxide may also be formed if the fault involved cellulose. In some instances, the oil may become carbonized. * Thermal heating Decomposition products include ethylene and methane, together with smaller quantities of hydrogen and ethane.Traces of acetylene may be formed if the fault is severe or involves electrical contacts. * Corona Corona is a low-energy electrical fault. Low-energy electrical discharges produce hydrogen and methane, with small quantities of ethane and ethylene. Comparable amounts of carbon monoxide and dioxide may result from discharge in cellulose. 2. 1 How DGA Works DGA method in cludes sampling of oil inside the transformer at different locations. Chromatographic analysis will be done on the oil sample to find the concentration of dissolved gas.The gases are then separated, identified and quantitatively determined such that the DGA method can then be applied in order to obtain reliable diagnosis [6]. The extracted gases meant for analysis purpose are Hydrogen (H2), Methane (CH4), Ethane (CH6), Ethylene (C2H4), Acetylene (C2H2), Carbon Monoxide (CO), Carbon Dioxide (CO2), Nitrogen (N2) and Oxygen (O2). These fault gases can be classified into 3 groups which are shown in Table 2. Group| Hydrocarbons & Hydrogen| Carbon Oxides| Non-fault gases| Gases| CH4,H2,CH6, C2H4,C2H2| CO, CO2| N2, O2| Table 2 :Fault Gases GroupDepending on the concentration of the dissolved gases, condition of the transformer can be evaluated. This is achievable because each type of fault burns the oil in a different way where it generates different type of gases. Therefore, it is easy to examine the fault base on the gas released and its concentration level. Table 3 : Relation between Fault type and Fault gases 2. 2 DGA Diagnostic Methods Insulating oil breakdowns to small quantity of gases due to over electrical or thermal stress. Thus, the composition of these gases plays a role in determining type of fault.Through DGA diagnostic methods, it is possible to find faults as discussed earlier. There are many methods in DGA and 5 methods will be studied in this literature review part. 2. 2. 1 Rogers Ratio Method The Roger’s method utilizes four gases ratios: CH4/H2, C2H6/CH4, C2H4/C2H6 and C2H2/C2H6. Diagnosis if faults are accomplished via a simple coding scheme based on ranges of the ratio as shown in tables below [4]. Table 4: Gas Ratio Codes [4] Table 5: Roger’s Ratio Code [4] The combination of the coding gives 12 different types of transformer faults. The type of faults based on the code is shown in table 6 below: [4]Table 6 : Classification based on Roger’s Ratio Codes 2. 2. 2 IEC Ratio Method This method originated from the Roger’s Ratio method, except that the ratio C2H6 /CH4 was dropped since it only indicated a limited temperature range of decomposition [3]. Here, the remaining three gas ratios have different ranges of code as compared to the Roger’s ratio method and they are shown in table 7. The faults are divided into nine different types as listed in table 8. [4] Table 7: IEC Ratio Codes [4] Table 8: Classification based on IEC Ratio Codes 2. 2. 3 Doenenbury Ratio MethodThis method utilizes the gas concentration from ratio of CH4/H2, C2H2/CH4, C2H4/C2H6 and C2H2/ C2H4. The value of the gases at first must exceed the concentration L1 to as certain whether there is really a problem with the unit and then whether there is sufficient generation of each gas for the ratio analysis to be applicable [5]. Table 9 shows the key gases and their concentration L1 [5], and table 10 shows fault type of specific ratios. Table 9: Concentration of L1 for Doernenburg Ratio Table 10: Fault diagnosis for Doernenburg Ratio Method 2. 2. 4 Duval Triangle Method M.Duval developed this method in the 1960s. To determine whether a problem exists at least one of the hydrocarbon gases or hydrogen must be at L1 level or above and the gas generation rate is at least at G2. [6] The L1 level and the gas generation rate for this method are shown in table 11. Table 11: L1 limits and gas generation rate for Duval Triangle Methode Once a problem has been determined to exist, to obtain diagnosis, calculate the total accumulated amount of the three Duval Triangle gases (CH4, C2H2, C2H4) and divide each gas by the total to find the percentage of each gas of the total.Plot the percentages of the total on the triangle (Figure2) to arrive at the diagnosis [6] Figure 2: Duval Triangle Transformer Fault Diagnosis 2. 2. 5 Key Gas Method Figure 3 : Key Gases Diagnosis The principle of the Key Gas method is based on the q uantity of fault gases released from the insulating oil when a fault occurs which in turn increase the temperature in the power transformer. The presence of the fault gases depends on the temperature or energy that will break the link or relation of the insulating oil chemical structure.This method uses the individual gas rather than the calculation of gas ratios for detecting fault. The significant and proportion of the gases are called â€Å"key gases†. Figure 3 indicate these â€Å"key gases† and relative proportions for the four general fault types [5]. 3. 0 Scheduled Work Task| Start Date| Duration (days)| Remarks| Progress| Project Title Selection| 28. 05. 2012| 12| Proposed own project title and submitted it on 4th June 2012| Completed| Research for Project Proposal| 08. 06. 2012| 10| Journals and articles were browsed through in IEEE, Science Direct, Scopus| Completed| Project Proposal| 14. 6. 2012| 3| Project Proposal was done based on the journals and article s found. | Completed | Research for Literature Review| 19. 06. 2012| unknown| Journals and articles were searched for the literature review| Ongoing| Progress Report 1| 01. 07. 2012| 15| Each progress towards the completion of Final Year Project 1| Completed| Research / Oral Presentation Preparation| 17. 07. 2012| 24| Complete the literature review and getting prepared for the oral presentation while doing research for the project| Incomplete| Oral Presentation| 10. 08. 2012 / 29. 08. 012| -| Presentation of all the findings and research and logbook to be submitted| Incomplete| Progress Report 2| 10. 08. 2012| 3| Each progress towards the completion of Final Year Project 1| Incomplete| 4. 0 Conclusion In the end of this study, I’ll be able to determine the pros and cons of all the different types of DGA diagnostics methods and be able to determine transformer faults out of the diagnostic methods which are very essential to prevent transformer damage. Suggestions and recommend ations will be given to further improve the efficiency of those available diagnostic methods . 0 Reference 1. Church, J. O. , Haupert, T. J. and Jakob, Fredi (1987). â€Å"Analyze Incipient Faults with Dissolved-gas Nomograph. † Elecrical World. Oct. Pgs. 40-44. 2. DiGiorgio, Joseph B. (1997). â€Å"Dissolved Gas Analysis of Mineral Oil Insulating Fluids. † California: Northern Technology & Testing 3. Domun, M. K. (1996). â€Å"Condition Monitoring of Power Transformers by Oil Analysis Techniques. † Proc. of the 11th Conference on Electric Power Supply Industry (CEPSI). Kuala Lumpur, Malaysia 4. Siva Sarma, D. V. S. S. and G. N. S.Kalyani, ANN Approach for Condition Monitoring of Power Transformers using DGA. 2004 IEEE Region 10 Conference, TENCON 2004. , 2004. C: p. 444-447. 5. C57. 104. 1991, I. , IEEE Guide for Interpretation of Gases Generated in Oil-Immersed Transformer, I. The Institute of Electrical and Electronic Engineers, Editor. 1992, The Institute of Electrical and Electronic Engineers, Inc p. 27 6. FIST3-31, Facilities Instructions, Standards and Techniques Volume 3-31 Transformer Diagnostics. 2003, Bureu of Reclamation Hydroelectric Research and Technical Services Group Denver. p. 5-13.

Examine the Argument That Neighbourly Relations Essay

Neighbourly relations can be ordered and defined in a number of ways whether it is through certain identities or virtual social rules, created, maintained and repaired by people in groups with a situation in common or a relationship to act out in their everyday lives. This essay examines the relations, conflicts and differences that come with neighbourhood life both in the Uk and other countries where contradictions and the limits between what is seen as friendly and where invasive behaviour starts are an important part of ordinary, daily life. Last of all it will show how these relations can easily break down due to tensions caused by conflicts over noise and space where the division between private and public life is hard to define. When we speak about local residents we see them as having a collective or group identity with a particular situation in common, but they also have relational identities as neighbours with conflicting feelings of trust and suspiciousness. In addition people seem to behave in certain ways when they are part of a group as many researchers have discovered through studies on identity, one of these Tajfel cited in Taylor, 2009, p. 170, from his study found that if you tell people that they are part of a group this automatically influences the way they act. We often behave in ways which tell others who we are or how we want to be seen, a little like play acting, our daily lives become a stage on which we perform and relate to our public in social situations, as Ervin Goffman cited in Taylor, 2009, p. 72, found from his study in 1959 on everyday lives, society is a moving picture and identities are understood by looking at what people do rather than who they are. Furthermore a social identity is created through connections with others in different situations or places as we can find in neighbourhoods, by looking at the way people interact with each other and the sort of virtual, unwritten rules regarding privacy and friendsh ip that people abide by everyday. Stephanie Taylor, 2009, on pg. 173) seems to sum all this interaction up in just one short sentence; â€Å"social life proceeds rather like an endless slow dance†, and if we look at the discursive psychological approach that Jovan Byford (2009) uses to analyse a conversation he had with his neighbour, a perfect example of this dance is the way his neighbour tries to maintain a pattern of identity and typical behaviour of a how a ‘good’ neighbour should act. These patterns of behaviour and uses of identity are an essential part of maintaining and repairing order within certain groups or in society in general something which we have heard an example of in ‘Studying Identities’, 2009, track 1, when Professor Margaret Wetherall speaks about the studies carried out on conflicts of a segregated society in Ireland. She explains that the segregated groups had a stronger sense of community with less elaborate identities and social networks, but that this had a great impact on the levels of prejudice towards other groups. Neighbourly relations can be complicated and contradictive as there are two contrasting sides to this type of relationship, the first being that neighbours need to live together happily, be helpful and always be there when needed and the other is that they need to respect a person’s privacy and mind their own business. This is when the dancing partners need to keep an adequate distance from each other trying not to step on each other’s toes, and as (Jovan Byford, 2009, pg. 251) says â€Å"good fences make good neighbours†. This is particularly so with regards to the UK, Anthropologist Stanley Brandes cited in Byford, 2009, p. 59, from his study on social order in Becedas, Spain found the same kind of strong contradictions in rural life, but with a difference in how they acted and danced in their every day lives. He compared neighbourly relationships to the family and found that they feared privacy and saw it as being rude something which could be seen as a breath of fresh air from an English point of view, but these neighbours needed each other to survive and this closeness was seen as a form of surveillance and the necessity to lean on each other brought with it great suspicion, vulnerability and distrust. However there can be tensions in neighbourly relations causing them to break down, this can be for a series of reasons but mostly regarding space and noise when we talk about neighbourhoods. Disputes can arise through people stepping over unwritten, social or group boundaries and if the two sides are unable to repair or settle their dispute then a mediator is often introduced to try and stop the case getting out of control and ending up in court. Elizabeth Stokoe, cited in Byford, 2009, p. 264, in 2006 examined cases of complaints about sexual intercourse and found that people didn’t really want to complain as they were afraid of invading a person’s private life, but at the same time they believed that private activities should be kept private. Another example of tensions between neighbours is a study done by Joanna Bourke, cited in Byford, 2009, p. 66, in 1994 on the noise in overcrowded working-class housing in the 1940/50s, and here too we can see that residents took measures to distance themselves from their neighbours like placing their bed on the other side of the room to try and resolve and repair the conflict that could or had already arisen. In conclusion we can say that the fine line between what is seen as a friendly or intrusive neighbour is very difficult to decipher, and we are continuously dancing with each other throughout life to find the right balance, so finally we can say that neighbourly rel ations are definitely characterized by a friendly distance.

The Best Jobs for Introverts Who Hate Social Interaction

The Best Jobs for Introverts Who Hate Social Interaction If you consider yourself introverted (or you just really prefer to work on your own), you might want to take your comfort with people  into account when choosing your career. Some professions will just plain demand more personal interaction than you can tolerate. The Occupational Information Network (O*NET) rated jobs on a scale of 0-100, based on how much contact with others is required and how much it requires a worker to be pleasant in their interactions.Here are their top jobs for introverts.If You Have a High School DiplomaPoet, lyricist, or creative writer: Solitude galore. And you’ll be in excellent company with some of the greatest writers who never bothered going to college and still wrote masterpieces. If you’re creative and good with words, it’s worth considering.Dental lab technician: Dentists have to talk to and see patients all day, but their technicians work behind the scenes making molds and doing other laboratory work. And most positions only r equire a diploma or equivalent.Farm or crop worker: If you love working outdoors and don’t mind physical labor, this could be great for you. You could work farm equipment, harvest fruits or vegetables, apply pesticides. And you won’t have to talk much while you do it. This industry is set to grow in the next few years. And there are many different ways to fit into the field.Potter: Operate machines or hand-make ceramics, pottery and stoneware. If you like working with your hands and are on the creative side, then this could be right for you.If You Have an Associate’s DegreePhotonics technician: Work in fiberoptics and with laser technology. This field is set to boom and is also a â€Å"green occupation† where you’d be working with energy-efficient activities and technologies.Machinist: This is another â€Å"green occupation† with a bright future, and it requires a whole lot more interaction with machines than with other people.If You Have  a Bachelor’s DegreeReal estate appraiser: Appraisers interact with properties, where agents interact with potential buyers and sellers. Spend your time appraising properties for purchases, sales, or loans.Cryotechnologist: A lab setting is always good for those who crave alone time. Take refuge among cell samples. You might need an additional post-graduate certification, but you can easily get your start with just a Bachelor’s degree.Geological Sample Test Tech: Survey and analyze geological samples. Another field in which you’ll spend a great deal of time on your own and outside.If You Have  a  Master’s Degree or HigherMathematician: Math is increasingly important in our technological age. If you have the talent and enjoy it, it’s a great way to take refuge in numbers and your own brain to solve the biggest problems of various fields.Archivist: You like people, but you prefer to interact with them on paper. Archivists maintain documents and d atabases, but often work in blissful silence on their own.Environmental Economist: If you have a head for numbers and love nature, this could be a great field for you. Another â€Å"green occupation† experiencing rapid growth, this research and analysis position will be incredibly valuable in the economy to come.

How to Write a Cover Letter

How to Write a Cover Letter How to Write a Cover Letter How to Write a Cover Letter By Mark Nichol Does anyone write business letters anymore? Whether or not you still employ this declining form of communication, you should be aware of the customary procedure, because the necessity may come up. This model is only one of several variations, but whichever version you employ, veer from the template only if you have a good reason to do so. (Word-processing programs generally have a business-letter template, but it’s simple enough to create a letter on your own.) Start the letter with your own address on one line, followed by the city and state (using the US Postal Service’s two-letter state symbols) and the ZIP code on the next. (It’s not necessary to include your name here.) Enter a line space, and then type the date in full for example, â€Å"November 1, 2012† (or, if you’re writing to someone outside the United States, â€Å"1 â€Å"November 2012†). A few lines below that, write the recipient’s name (preceded, if known and applicable, by a title such as Professor or Doctor or by a social title like Mr. or Ms., or a variation you know the person prefers). If you don’t know the name of the person you wish to contact, research it online or phone or e-mail the company and obtain a name. On subsequent lines, add the address and then the city and state and the ZIP code. Several lines below that, enter the salutation, which should consist of the word dear and the full name as it appears in the address section for example, â€Å"Dear Mr. Mark Nichol,† followed by a colon. If you know the recipient on a first-name basis, write simply, â€Å"Dear Mark,† followed by a colon. (If you can’t easily determine whether a person with a name used by men and women alike is male or female, or if you prefer, omit the social title or use another applicable title.) The body of the letter should be concise, beginning with a friendly introduction and a statement of the purpose of your letter. In one or more subsequent paragraphs, expand on your main point and supporting details, then close with a summary of your intent in writing and a request for action from the recipient or a reference to action you or another party will undertake that the recipient should expect or be aware of. Separate each pair of paragraphs by a line space (or a double space), and use single-space lines and left-aligned, or ragged-right, justification. (A left-aligned block of type has a straight left margin and a right margin that varies depending on the length of the words in each line, hence the alternative name.) Margins should be set about one inch from the left edge of the paper and should be no wider than six or six and a half inches. Also, because you’re inserting line spaces between paragraphs, it’s not necessary to indent the first lines. The closing (â€Å"thank you,† or, as informal alternative, â€Å"thanks† in either case, the first letter should be capitalized) should be followed by a comma, then leave several line spaces between that and your typed name (which is optional) to allow you to handwrite your signature. If you are including one or more enclosures, type the initial-capped singular or plural form of that word (or the abbreviation Encl.) so that the recipient knows that he or she should find additional materials in the envelope with the letter. You might also want to list the specific enclosures so that the recipient will be certain that he or she has received all of them. Times New Roman in 12-point type is the standard font, though other easy-to-read fonts are acceptable. Want to improve your English in five minutes a day? Get a subscription and start receiving our writing tips and exercises daily! Keep learning! Browse the Business Writing category, check our popular posts, or choose a related post below:Spelling Test 1What is the Difference Between Metaphor and Simile?One "L" or Two?

Endgame Essay Example | Topics and Well Written Essays - 250 words

Endgame - Essay Example The play mirrors this chess approach by comparing it to life. Life is just like endgame in chess where there are few moves left, but the actual end is unknown and unwanted. Hamm talks of how his life is close to the end and he would like to finish it. According to Byron (2007), when Hamm says, â€Å"I hesitate, I hesitate to end. Yes, there it is, its time it ended and yet I hesitate to end,† (Byron, 2007) he talks about how the end is not the simplest choice (p. 2). To man, the world is seen as a source of suffering. Hamm says that that his mother, father and dog all suffer â€Å"as much as creatures can suffer†. He, however, insists than none of them experience â€Å"suffering that equals† his own. From this illustration, the world is depicted as not being understanding to other people’s pain. Repetition has been used by Beckett to emphasize certain themes and motifs of the play. For instance, the words ‘finished’ and ‘end’ have been used repeatedly to emphasize the nature of the end game. While Clov says, â€Å"Finished, its finished, nearly finished, it must be nearly finished† to show the never-ending nature of his task, Hamm uses it repeatedly to ask if his servant can ‘finish’ him (Byron,

The recent advancements made in petroleum microbiology Term Paper

The recent advancements made in petroleum microbiology - Term Paper Example Petroleum, in the twenty – first century, remains to be one of the most significant sources of fuel and energy. It is a complex blend or mixture of different types of hydrocarbons and organic compounds. It may sometimes also contain traces of transition metal complexes (called organometallo) like nickel and vanadium (Lerner, 2011). The compositions of petroleum, and thus its physical and chemical properties, vary from place to place, and from area to area. In the current scenario, the demand for petroleum and its by – products continues to rise. In an answer to them, science has come up with the use of microbiology during the extraction and purification of petroleum. The study of this use and application of microorganisms in the fuel industry is called petroleum microbiology (Encyclopedia, 2005). The most important experimental works in the field of petroleum microbiology have been done by Claude ZoBell (Lerner, 2011). His research, which extended for over 40 years (193 0 – 1970), has proved that microorganisms, especially bacteria, play an important role in most of the vital processes related to petroleum, which include its formation, extraction and refining. The hydrocarbons and petroleum products have been termed as ‘substrates’ or ‘nutrients’ for microbes, which they need in order to carry out efficient metabolism. This feeding of bacteria and fungi is aided by the action of certain enzymes and is called, biodegradation (Hamme, 2003). Most of the hydrocarbons are broken down to release carbon dioxide, water, proteins and nucleic acids. The carbon dioxide escapes to the atmosphere while the rest of the products are used for cellular growth. Bacteria and fungi involved in biodegradation are highly specific in function, that is, not all bacteria can break down a specific hydrocarbon or organic compound. Pseudomonas and mycobacterium are examples of some degrading bacteria while examples of fungi include Candida (Va n Hamme, 2003). With the advancement of biotechnology and microbiology, scientists have widened their understanding and developed better concepts of the metabolic processes related to microbial actions on petroleum (Van Hamme, 2003). The effects of the use of the hydrocarbons as substrates by the microorganisms involve alteration of cell surface membranes and mechanisms of both uptake and discharge. Similarly, the ability to study the behaviour of microbial organisms, in a petroleum rich environment at a molecular level has also been enhanced. Under the optimum conditions for the growth of these organisms, they have been treated with hydrocarbons, and transformed to take part in highly accelerated and bioreactor-based petroleum waste degradation processes, that are now being implemented (Atlas, 1995) (Van Hamme, 2003). In the modern world, petroleum microbiology is an important part of bioremediation which involves controlling oil pollution (Bronson, 1993). Bioremediation is the use of microorganisms to get rid of pollutants and harmful substances from the environment. Oil pollution is the result of seeping and spillage of oil from tankers into the sea, as well as intentional or deliberate discharge of oil products into the water sources. The huge spill of crude oil from a tanker near Alaska’s coast back in the 1980s practically showed the scientific world of the usefulness of biodegradation (Bronson, 1993). Scientists observed the actions of the microorganisms present in breaking down the oil and thus, getting rid of it, both on and offshore. Experimental evidences also showed that the microbial actions are affected by factors like temperature and pH. This led to the establishment of a rapidly growing industry which makes uses of microbial remedies to counter water pollution. Modern researches have also proved that waste products produced by one microorganism during biodegradation can be used as a source of food by the others