History Essay Example | Topics and Well Written Essays - 750 words - 48

History - Essay Example During this time, there were all sort of corrections that were made concerning to ensure that it is made to fit the motion of the planets to Ptolemy’s ideas. According to the Copernicus, he proposed an alternative theory that showed that the Earth was a planet moving around the sun and all planets were said to move in circular motion in form of a circle, one side to the other, he also made observations that Mercury and the Earth are close to the sun since they were smaller than the earth(Kidner, Bacur and Mathisen 502).Therefore out of discoveries that were made concerning the distance between earth and sun, it made ease estimations of distance of Mars, Jupiter and Saturn toward sun thus creating idea in mind that they had bigger circles than earth and seemed to move backward since they were said to move more slowly(Kidner, Bacur and Mathisen 502). In 16th century, Galileo an Italian mathematician and philosopher made the first observation, that is, he observed the planets through a telescope he built in 1609 and what he saw convinced him that Copernicus observations and discoveries toward the planets and dun was right. Galileo through hi aggressive defense over the Copernican theory was defended by the Catholic Church and therefore this cost him his freedom. Here are the discoveries that were made by the Galileo, he observed the moon and came to discover that it is like a world with mountains and â€Å"seas†(Kidner, Bacur and Mathisen 505). And later he observed the sun which was a risking act due to blindness since the sun should never be looked at through a telescope and he saw the sunspots. After making this discoveries, later he turned to the planet Jupiter, during this time he saw four moons orbiting around the Jupiter. Out of this discovery, he saw that the four moons are in the same plane, and close to their ecliptic and also seemed to be collinear(Kidner, Bacur

Construction Budget Over Runs and Late Project Completion

Construction Budget Over Runs and Late Project Completion Construction projects are graded very successful if the work is completed within budget and to the deadlines agreed in the specification. However, the sad truth is that not all projects are guilty of being successful. Many projects experience failure due to the uncertainties associated with construction projects which include weather, materials, equipment, money and profitability, disagreements between clients, contractors and sub-contractors, statutory regulations, economic and political issues and functionality and purpose. To prevent these failures from constantly occurring, the types of failures need to be addressed so future construction projects do not fall into the same category of unsuccessful Civil Engineering construction projects. It is clear that some of these failures occur regardless of careful planning due to uncontrollable conditions such as climate change, recession, delayed deliveries etc. Therefore addressing the controllable issues, contractors can incorporate the se problems into their specification. By understanding the issues from previous unsuccessful construction projects and correlating the failures, it will be easy to identify the common errors and try to eliminate them from future projects. The research will be based on unsuccessful construction projects by using data from case studies, books, the internet and journals. The constraints and limitation of this paper will depend highly on the data received and analysed by previous sources and their opinion. The paper will also focus on two main factors, budget over runs and late completion. Examples of Budget Over-runs and Late Completion Projects There are many construction projects which have Budget Overruns and Late Completion. A few examples of budget over-run and late completion projects are: Wembley Stadium Sydney Opera House Tfls Jubilee Line Wembley Stadium The Wembley Stadium was a renovation construction project which required the old stadium to be demolished and rebuilt. The main purpose of the new stadium was to increase the capacity of the stadium, be the new home of English football and also host other sports and national events. The original estimated cost of the stadium was  £757m. This value at completion soared to about  £798m. Multiplex (main contractor) reported about  £45m losses in the construction of the New Wembley Stadium. These losses arose due to factors which include: Weather Sub-contractor walkouts (Cleveland Bridge steel company walkout) Sub-contractor disagreements (trade union of workers walkouts) and Changes in design due to failures. Due to the above factors the completion date of the project was pushed back by about three months. [1, 2] Sydney Opera House The Sydney Opera House was built as a performing arts centre and was designed by Jà ¸rn Utzon. The original estimated cost to build the Opera House was AUS $7m in 1957 and expected to be completed in five years. The project was started in 1959 and the value escalated to a massive AUS $102m and was completed in 1973. Not only did the budget over-run to 15 times the original estimate, but it also took 14 years to complete, which is a very late completion. The main factor which affected this project was insufficient planning during the design stage This led to a series of errors during construction, which effectively caused a domino effect. Hence, increasing the cost and pushing back the completion date [3, 4]. Tfls Jubilee Line The London Underground Jubilee Line extension was to link Stratford and the Docklands to Westminster. This project was planned in 1989 and estimated to cost  £1.2billion. The construction started 1993 and expected to take four years. This however was not the case due to a series of setbacks. There are four major causes for these delays: The project was put on hold for 18 months to find funding The movement of the block signalling system caused delays The location of the O2 Centre (Millennium Dome) had not been established and Due to the collapse of Heathrow Express Tunnel, work was put on hold again. This caused many changes to the original design therefore causing the project to be completed in early 1999, which was a twenty months late completion. The cost also increased to  £3.5billion, an astonishing 70% budget over-run [5]. What Are Budget Over-runs? Budget Overrun can be simply defined as when the final cost of the project exceeds the original estimates [6]. In terms of construction, this means the actual cost of the project at completion minus the original tendered cost during the tendering stage. This therefore creates either a positive value or a negative value. If the value is positive, the project is within budget and has created a profit, if the value is negative, the project has created a loss and is referred to as a Budget Over-run. Why Do Budget Over-runs Occur and What Are The Causes? Budget Over-runs occur constantly in construction projects around the world. The main aim of any business (Construction Company) is to make money, however, it is very common in construction to hear companies reporting losses due to budget over-runs. If the project is completed within the budget specified, it can be graded a success. Therefore this is an ideal factor to use, to rate the success of a project. Budget over-runs occur due to many factors, which are sometimes split into two groups, controllable and extent of damages. The types of budget over-runs are caused by: The cost variations between clients and contractors and sometimes a third party e.g. project manager, consultant etc [7]. Poor estimation during tendering process Disagreements with Trade Union of Workers Climate change Late completion Changes in design etc. This shows that the slightest mistake or changes made could increase the cost of the project dramatically. Research carried out around the world on construction projects has shown that: [8] 9 out of 10 projects over-run Between 50 and 100% over runs were common There was a constant correlation of over-run projects for 70 years in each of the 20 nations and 5 continents surveyed. Average construction project costs are about 33%[9] Another source of research carried out by Jahren, et al [10] predicted that the factors which increased the chances of a budget over-run are: Project size Method of delivery Amount of competition Quality of contract documents and Interpersonal relations There have been predictions published in the User Guide (2005), which outlines the common factors which cause budget overruns. These are: Poor Project Management The project manager/management team is employed to control the entire development to run smoothly and efficiently from start to finish for the project. They may or may not cover the costing depending on the clients preference. If the project management is poor, it will create an effect on the entire project and in the User Guide (2005) it is listed as: Lack of planning and co-ordination Poor communication between members of the project team and the project sponsor Failure to identify problems and institute necessary and timely design and programming changes Lack of control over time and cost inputs Lack of end user involvement. Unexpected Ground Conditions The ground conditions on any construction site are key, if the ground is not tested prior to tendering, the costs could escalate out of control, in order to put it right. This effectively will be the contractors responsibility. Although trial pits and bore holes are used to get an idea of the ground conditions, the true site condition will not be exposed until full excavation. From the time the trial pits and bore holes are carried out to the time of excavation, the ground conditions may have changed. Changes in ground condition may cause a redesign and also cause problems for any machines and materials ordered to site. This therefore should be taken into account as these could increase costs. Shortage of Construction Materials When construction is at its peak development stage in a certain areas, locally ordered materials could be in great demand. Some materials maybe required but cannot keep up with the demand, hence causing delays to the project. These materials might be ordered from other areas of the world, but may cost substantially more as it will need to be shipped in and pushing back the completion date due to delays in material deliveries. Therefore to prevent any shortages occurring this will need to be anticipated and added to the cost to prevent budget overruns. Change in Foreign Exchange Rates If specific materials are unavailable in the local market, it will then need to be imported from overseas. This can cause a problem to the budget if there are dramatic changes in exchange rates. This unexpected exchange rate should be taken into account during costing as it will cause an increase in the budget. Inappropriate and/or Inexperienced Contractors Selection of the right contractor is another key decision. The contractor must be suitable for the project as some projects use a wide range of tenders who price the job. Although, the cheapest tender may be very inviting, it does not guarantee quality. The decision should be made on contractors experience, the contractors successful history of completing jobs on time and within budget and also the most competitive price. Research carried out by Yates et al (2003), the contractors tender which is 15% less than the Engineer, it is very likely there will be a budget over-run. The tenders reputation should also be consider. This could be key as some companies may fall into hardship and bankruptcy. This will delay the project considerably and also increase costs as most contractors tend not to takeover other contractors jobs in case of any problems which could arise during later construction. Natural Disasters/Events These are disasters or events which cause inevitable delays and therefore budget issues to the project. The types of disasters/events which may cause delays and cost implications are wars, riots, earthquakes, landslide, fire, political and economic issues, types of projectile, contamination and many other disasters/events. Underestimations Deliberate cost underestimating occurs in order to gain the job. This will result in the project not being completed and the client having to either increase the budget or retender, hence, causing budget over-runs. Research carried out by Fllyvbjjerg showed that big construction projects were common culprits to underestimation and therefore led to the statement, whatever the cause, almost all large public projects contain initial cost estimating errors that result in the need for increased funding to complete the projects'[8]. The underestimation has been split into four major topics by Fllyvbjjerg: Technical These are known as forecasting errors which are errors requiring changes because of imperfect techniques, honest mistakes, inadequate data, inherited problems in predicting the future and lack of experience on the part of forecasters. In this case, the errors occur between the budgeted estimation and the actual cost of construction. [11] Economical The economical issues are split into two groups, public interest and economic self interest. Public interest is where there are promoters and forecasters who underestimate the cost of the project on purpose to give public officials an incentive to cut costs to save public money. Economical self interest is used to create jobs for Engineers and construction companies and shareholders also get involved to make more money. The fact that shareholders get involved tends to influence the forecasting process and therefore makes an impression on the result. [8] Psychological This is known as appraisal optimism. Promoters and forecasters are held to be overly optimistic about project outcomes in the appraisal phase, when projects are planned and decided. [12] By making the cost seem lower than it should be, will effectively cause the budget to over-run. Political Political explanations interpret cost underestimation in terms of interests and power. The political issue arises on the fact that whether forecasters are intentionally biased to serve the interests of project promoters in getting projects started. This is key in order to start a project quickly, however, there is a legal and moral deception attached this form of underestimation [13]. Change and Variation Orders These are changes to the project and are not part of the outlined work during the agreement of the project. In construction, changes tend to be inevitable and will cause a disruption to the project deadline and also budget. These decisions are therefore discussed prior to any changes being made as it may not suit the client or contractor. Inflation The general definition of inflation in economics is the increase in prices and fall in the purchasing the value of money [14]. This means that if there is an inflation increase, the value of all parts of the project will increase e.g. material costs, machinery hire, wages etc, which in turn increases the budget. To avoid these extra costs, predictions of the market should be checked during the tendering process, by both client and contractors. Acceleration This is where there is a delay but the client demands the project to be completed by the contractor on time, before the completion date or before the agreed extension completion date. Delays Of Completion Time and Payments Delays of completion tend to equal delays of payments, this will cause interest rate repayments to escalate causing the alleged interest trap for both client and contractor. What Are The Overall Effects From Budget Over-runs? It is clear that budget over-runs occur continuously in construction projects around the world. There are many causes for these extra costs which have not been considered during the tendering process. This has caused a bad impression not only on clients but also contractors and end users. The effects on each party is as follows: The client loses faith in the construction industry but in-particular their consultants who are unable to deliver the project on time. This also leads to higher investment being required from the client. The consultants reputation is ruined as they have an inability to control the project budget therefore leaving question marks for winning new projects. Contractors do not make the profits anticipated and failure to complete the jobs leaves their reputation in tatters. The end user will effectively be the one paying the highest price in terms of buying/renting/leasing in order for the shareholders to cover their costs. Overall, its the construction industry that suffers as it causes major headlines in the media for the wrong reasons. Clients will be more cautious before investing in large scale projects which will cause a drop in the construction industry projects due to its feeble reputation. Many construction projects which are accepted by the client will come with a greater risk to the contractor. How To Prevent Future Projects From Budget Over-runs? To prevent future projects from being unsuccessful in terms of budget, the management of costs need to be broken down to show exactly where costs will be greatest and smallest. The estimating, scheduling, accumulating and analyzing costs, and implementing measures to correct construction costing must be adhered to strictly. This will prevent any failures in terms of budget. There is a three step process which can be employed during the planning stage through to the construction stage: Identify the scale of the project (in terms of quality, completion time and budget), Ensure scope is adhered to strictly (in terms of time and budget) Monitor and control the above 2 steps constantly till the completion of the project. A successful project is based on the project manager and contractor working hand in hand to get the greatest efficiency from a project and tend to be based on time, performance and cost. There are many types of key principles and actions which should be followed for a project to be labelled successful and a few are listed below [15]: Good project definition and sound business case, Appropriate choice of project strategy, Strong support for the project and its manager from higher management, Availability of sufficient funds and other resources, Firm control of changes to the authorized project, Technical competence, A sound quality culture throughout the organization, A suitable organization structure, Appropriate regard for the health and safety of everyone connected with the project, Good project communications, Well-motivated staff, Quick and fair resolution of conflict. Risks and uncertainties increase the budget of any project. Therefore, a 10% of the estimated cost contingency plan is usually inputted into many projects to prevent the project from delays and going over budget. Although 10% sounds fairly small, by adding other control systems to the project performance, this value could increase dramatically. However, a good project management costing is more desirable and efficient than a contingency plan. What are Late Completions? In construction projects a late completion is commonly referred to as the time between the actual deadline agreed, to the time the project is completed. This is commonly called a delay in construction and tends to have a major effect on the client, end user, contractor and shareholders. If delays occur in construction projects, the contractor will be subjected to: Additional/Extension time of completion, Immediate termination of contract, Reduced profit or A mixture of the above. This is not always the case, as some delays are not the contractors fault. The other parties involved in the construction stage are, clients, consultants and external influences e.g. suppliers, machinery, mother nature etc. Any delay will create problems between all/some of the parties involved. Why Do Late Completions Occur and What Are The Causes? Delays can be split into three categories, these are: Excusable Delays These are delays which are not caused directly or indirectly by the contractor and in turn the contractor is allowed an extension of time. The excusable delay can also be split into two parts, Excusable With Compensation This is where the contractor is delayed due to the actions of the client, and is given and extension of time and compensated with money for wasted time. An example is if client cannot access the site after the client has approved for the work to start. Excusable Without Compensation This is where the client and contractor cannot be blamed for the delays caused and the contractor is only given an extension of time. An example would be Mother Nature. Non Excusable Delays These are delays caused by the contractor or sub contractor and the contractor is not given any extensions. But the client may get liquidated damages. Concurrent Delays These are delays which occur at the same time. If, and only if two delays or more occur at the same time, then the contractor is entitled to an extension. Delays are caused by the members directly involved in the project and also members indirectly involved in the project. Research was carried out by Odeh and Battaineh (2002) and their finding showed that [17], Client Delays The client caused delays in terms of: Finance and Payments, Constantly Interfering, Indecisive Decisions on Design and Requirements, Very Unrealistic Forced Time Schedule, Minimal Experience of Construction Projects, Minimal Experience of Co-ordination and Communication, Very Poor Employment of Representatives, Inappropriate Feasibility Study. Consultant Delays The consultant causes delays in terms of: Poor Management/Management Team in general, Poor Management of the Contract, Lack of Preparation and Poor Drawings leading to Slow Approval of Drawings, Quality Assurance and Control, Improper Site Investigations and Slow Approval of Tests and Inspections, Poor Consultant Team with Minimal Experience. Contractor Delays The contractor causes delays in terms of: Poor employment of Sub-contractors, Poor Site Management, Inappropriate Construction Methods, Poor Planning including costs, time, budget etc, Terrible Decision Making during Construction, Inadequate Contractor Experience. Material Delays Material cause delays in construction projects in terms of: Overall Quality, Its Demand and Supply, Importing Materials, Inflation Rate of Materials, Late Delivery and Unreliable Suppliers Labour and Equipment Delays Labour and Equipment cause delays in construction projects in terms of: Labour Availability and Productivity, Skilled Labour Availability, Low motivation and morale, Strike Action and Absent Labourers, Equipment Demand and Supply, Frequent Breakdown and Maintenance of Equipment, Improper and Inadequate Equipment. Contract Delays Contract cause delays in construction projects in terms of: Constant Changing of Design, Mistakes and Discrepancies in Contract Documents, Different Party Relationship Breakdowns e.g. disputes, negotiations, breakdown in communication, improper organisation. External Delays External influences cause delays in construction projects in terms of: Climate and Weather Changes, Unexpected Ground Condition Changes, Regular Changes e.g. security codes, I.D.s etc, Complaints and Problems from Neighbours, Inflation of All Materials, War, Riots, and Other Conflicts, Slow Clearance of Site. How To Prevent Future Projects From Late Completions? There are many factors which cause late completions of construction projects. The delays can be caused by direct or indirect actions. Direct actions are delays which can be avoided as these tend to be made by the parties involved. Indirect actions are uncontrollable and therefore by minimising the direct actions, the delay can be kept to a minimum. Research carried out by Nguyen, et al. (2004) on project success factors in large construction projects in Vietnam, Aibinu and Jagboro (2002) on acceleration of site activities and contingency allowances, Koushki, et al. (2005) on what the minimization of time delays and cost overruns would require, and Odeh and Battaineh (2002) on recommendations for improving the situation of construction projects allowed for a table of thirty five methods to be created. These methods would show how to minimise/eliminate delays from construction projects.   Conclusion From the research carried out, it appears that Budget Over-runs and Late Completions are a common aspect of the construction industry. However, it is clear that not all Budget Over-runs and Late Completions are controllable and some are fabricated to seem as over-run and completed late due to the process of tendering. In appears that there is a connection between late completion and budget over-runs hence, these are key factors which need addressing. The most influential effects for over-running and late completion are delays, insufficient finances, loss of reputations and controversial decision making from clients, consultants and shareholders. It is therefore compulsory that all the above measures should be followed, but a few major recommendations must be adhered to in order to make sure the project is always successful. The major recommendations for all parties involved are, Client The client should make sure all finances and payments are available and paid on time, the feasibility study is well planned and accurate as possible, the client should be proactive in decision making and understand what is feasible and what isnt, and the client should recommended a deadline but allow for any anticipated delays. Consultant The consultant should have good people skills, understand the projects objectives and the clients obligations, any misunderstood/discrepancies should be ironed out prior to construction and during the construction stages, this will prevent any major changes required during construction. The management team should be more than adequate and have a good history in the field of the construction project, quality control and assurance procedures should be put in place along with potential disagreement solutions which could arise. Contractor The contractor should tender based on the actual job costs and not the minimum tender in order to gain the contract. The contractor should employ reliable sub-contractors which have a good history in terms of completion and quality, the contractor should have a good management history as well as a good reputation in the type of construction project.

Protein Thermal Stability Essay -- Scientific Research, Food Industry

In the food industry, plant-derived protein, such as soy protein, is being used as an economical replacement for animal-derived proteins, such as whey and casein, but limitations occur due to the functionality and stability of these proteins in different applications (Pasupuleti and Demain 2010). Protein concentrates contain 50-80% protein, while protein isolates contain greater than 90% protein (Hui 2007). Soy protein isolates are utilized in bakery goods to add texture and emulsification properties with minimal change to the color and flavor of the food (Riaz 1999). In addition, the combination of soy protein concentrates and dried whey protein is used in bakery products as an economical replacement for milk (Riaz 1999). Whey and casein, while typically found in milk, can be isolated and utilized in many other applications, such as the branded ingredient Simplesse, a fat replacer (Hui 2007). Simplesse employs microparticulation, during which milk proteins are denatured and folded i nto smaller proteins that mimic the lubricating nature of lipids (Hui 2007). The isoelectric pH range for soy protein, during which solubility is minimal and precipitation may occur due to hydrophobic interactions, is between 4.2 to 4.6 (Pabby 2009). The isoelectric pH range for casein is 4.5 to 4.7 (Pabby 2009). After casein precipitates, the remaining supernatant contains the whey proteins, which may be removed through a process called salting-out (Mine and Shahidi 2006). Ammonium sulfate added to the supernatant will dissociate and the ions will interact with the water to alter water’s structure and increase surface tension, leading to the decreased solubility of and precipitation of nonpolar molecules, such as whey proteins (Mine and Shahidi 2006... ...rk: Springer Science + Business Media. 229 p. Poklar N, Vesnaver G. 2000. Thermal denaturation of proteins studied by UV spectroscopy. J Chem Edu 77(3):380-2. Riaz MN. 1999. Healthy baking with soy ingredients. Cereal Food World. 44 (3):136. Ryan M, McEvoy E, Duignan S, Crowley C, Fenelon M, O’Callaghan DM, FitzGerald RJ. 2008. Thermal stability of soy protein isolate and hydrolysate ingredients. J Food Chem 108(2):503-10. Thermo Fisher Scientific Inc. 2011. Protein assay data analysis. Rockford, Ill.: Thermo Fisher Scientific Inc. Available from: http://www.piercenet.com/browse.cfm?fldID=876769DB 5056-8A76-4ED7-480BC9A5AD92. Accessed Nov 20, 2011. Thompson LD, Dinh T. 2009. Food proteins – protein isolation and thermal stability. FDSC 4303/5305 food chemistry laboratory manual. Lubbock, Tx.: Texas Tech University, Department of Animal and Food Sciences.

Investigatory Project Essay

ACKNOWLEDGEMENT First of all the researchers would like to thank to their Science teacher Ms. Aira T. Velasquez for teaching them and helping them to do this Investigatory Project also giving us knowledge for us to understand every problem that has made in our I.P. The researchers would like to thank also to their Parents for their undying support to their children and giving them strength to finish the project successfully. Also the researchers want to give their gratitude for all the people and friends who help them and cooperate with them in order to do this. Lastly the researchers would like to thank to God Almighty, for his bountiful spiritual guidance, blessings and love. CHAPTER I : INTRODUCTION STATEMENT OF THE PROBLEM What are the other ingredients in making insect repellant which has a main ingredients of lemongrass and ginger insecticide? What are the ingredients needed in making a lemongrass and ginger insect repellant? What is the procedures on how to make a lemongrass and ginger insect repellant? How would it be in demand in other people? If this product sold in the market commercially what would be its price rate? What will be the effect of this product in the insects? What will be the outcome of this product to other people? HYPOTHESIS Water Lemongrass, Ginger and Water First get Lemongrass and Ginger, Second get a pan and put a water on it and let it boil, Third put the Lemongrass and Ginger let it boil for about 15 minutes. After get the extract of the lemongrass and ginger and put it in a atomizer. Very in demand because of its natural ingredients. It will sold for a cheap price because the ingredients is cheap. The insects will go away and they will be exterminate because of the strong smell. Surely it will be in demand because all ingredients used are natural and it cant cause harm OBJECTIVES To be able to make a insect repellant out of Lemongrass and Ginger. In order to create natural mixture this can kill insects. Because it is natural, it cannot harm our environment unlike other insect killers which can also harm our environment. And to save money because this insecticide is very cheap you will not cost hundreds to be safe from insects. SIGNIFICANCE OF THE STUDY The researchers have made this organic insect killer out of lemongrass to create an environment friendly substance. Since our environment is at stake because of pollutions. One of these pollutions is on air. If you haven’t noticed our planet is deteriorating because of this. And one of the causes of air pollutions is the insecticides and pesticides which have chemicals that can affect the air. Serves as an eye opener for people to use natural insecticides that can help our environment and cost cheaper rather that using insect sprayer full of chemicals that can harm our environment and destroy mother earth. Promote awareness and resourcefulness for the good of everyone. It can be an inspiration for others to do this with other natural components and also to lessen garbage which people are worrying of nowadays. SCOPE AND LIMITATION Our product is insect repellant, its main ingredients are Lemongrass and Ginger which has a very strong smell. IN making this insect repellant we  only use natural ingredients such as Lemongrass and Ginger because of its natural aroma that makes the insect away. We the researchers didn’t use any kind of chemical ingredients because we are promoting natural resources. DEFINITION OF TERMS For purpose of clarity, the folloing terms used in the study are hereby defined Lemongrass- is native in India and tropical Asia (Cympobogon citrarus) it can be a tea or food adding flavor. Ginger or ginger root- is the rhizome of the plants Zingiber officinale, consumed as a delicacy, medicine, or spice. ABSTRACT We the researcher conduct this study due to economic crisis nowadays. Its aim is to create a product of insect repellant which is cheaper and could give the same quality which the commercial one could give through lemon grass and ginger. Insect repellant are important tools for prevention of insect borne – diseases well as painful or uncomfortable insect bites. And one natural insect repellant is the lemon grass (Cympobogon Citratus). Determining the effectiveness of lemon grass as insect repellant is the main goal of the study. Specifically, it intends to apply the Steam Distillation Technique in obtaining the natural elements and essential oil of lemon grass such as citral and citronella. Lemon grass is a native herb from temperate and warm regions such as India, is widely used in Asian cooking and is an ingredient in many Thai and Vietnamese foods. Lemon grass used in cooking has become popular in the Caribbean and in the United States for its aromatic citrus flavor with a trace of garlic. Lemmon grass is a member of species of grass that grows to as high as 1 meter with leaves of 1 to 1.5 centimeters in width that grows from a stalk of about 30 to 80 cm. long with bulbous lower end. The researchers used lemongrass and ginger to promote natural insect repellant but have a good quality and very cheap in this way we can lessen tha air pollution and also the garbage of the can of insect repellant. Lemongrass and Ginger as Mosquito Repellant Our product is all organic and since it is safe to use and effective it is great replacement on those toxic insecticide. Lemongrass and Ginger are the main ingredients of our product. Ginger has oils in which can help kill insects and Lemongrass as well has a strong aroma that surely insect will go away. That’s why this project is much of use to you specially when it comes to gardening.

History of Ireland

In the years after 1000 AD the cultural and social landscape of Ireland changed a great deal. The influx of foreigners in Ireland had intentions to control, settle, and exploit the people and land and had a profound effect on the otherwise autonomous peoples who existed there. Most people assume the first people to inhabit Ireland were the Celtic speaking natives, who arrived between 700 and 500 BC. However, the island has been inhabited since as far back as 8000BC when nomads crossed the Irish Sea from continental Europe on ice bridges. Before the arrival of any other groups in Ireland the people of the island were very inward looking and not concerned with the events which took place in the rest of Europe. This paper will detail the effects that the newcomers had on the physical and social climate of Ireland and especially how and why the English were able to establish a control over the island which lasted for over 800 years. The primary unit of the Irish society was the family, each having its own lands. The source of power which gave rise to kingships and other forms of authority was cattle or other livestock given to families for use on their lands. In return for this families pledged their loyalty and services to their superior, such as in battle. As a result cattle became the measure of wealth and not lands as it was in the rest of Europe. 2 There was no single authority in Ireland to whom all answered; rather, historians noted any number of kingships on the island at any time. The kings were constantly fighting amongst themselves in an attempt to gain power and wealth. Perhaps even more divisive was the infighting amongst their own families; often, even brothers would fight each other dividing the established hierarchy. This created increased divisions between competing clans on the island and made any attempt to rule over it seemingly impossible as no Irishman was able to accomplish it. The Irish are naturally an open-minded and accepting people who have great respect for other cultures and traditions. The best example of this mentality is the spread of Christianity which St. Patrick introduced there beginning in 432AD. It must be noted that the spread of Christianity in Ireland was bloodless, unlike in many other parts of the world. By peacefully accepting the new faith, elements of openness and tolerance are evident in their natural character. The Irish people's actions were morally based on tradition and precedents set by their ancestors. They followed tradition very strictly when they warred with each other or had other disputes. Places such as monasteries were considered sacred, due to their strong belief in Christianity, and not to be interfered with when fighting took place. When a battle was won, the victor did not win the lands because tradition required that they stay in the possession of the family who tended them. Instead, loyalty and influence was won. This shows the respect land held in Irish society, it could be said that land was too sacred to become a pawn in the games of warring men. The first record of a strong foreign presence in Ireland came in 795 AD when Vikings arrived. It was reported that heathens had come ashore to loot and kill. 5 Throughout the forty years that followed sporadic raids were reported in all parts of Ireland as the Vikings sailed inland on the rivers and continued to attack coastal settlements. Similar raids were occurring at the same time in England and eventually it became evident to local populations on both islands that the goal of the raiders was shifting from bounty to settlement. 6 By the year 841 AD, the Vikings had established their own settlements on the island called Longphorts. These settlements were located on key waterways and used as a base from which to launch further attacks on the inland settlements of Ireland and on other areas of Europe, especially the island of England. Settlements included what are now major urban centers of Ireland such as Waterford and Dublin, which was founded in 852. These towns proved to be an important development as they would become forever sources of the wealth associated with trade. After establishing themselves permanently in Ireland the Vikings became much more vulnerable to counter attacks from native peoples and soon became part of the infighting which took place between all who inhabited Ireland. 7 Due to the changing condition of their homeland the Irish people had become more advanced and inline with the developing societies of Europe. They had been describe as â€Å"Tribal, rural, hierarchical and familiar† (In the sense of being family orientated) by one scholar but were quickly losing these traits. 8 Where it was once impossible to control lands or the kingdoms of other families, Irish leaders began to claim these kingdoms and lands in their name. Kings would capture Norse towns and hold them as their own; such acts were previously unheard of. 9 These actions occurred because the Norse had no knowledge of, or respect for the customs which were previously in place. Therefore, if the Irish wished to hold off the ever-expanding foreigners, their towns would have to have been overtaken and held. As a result of the importance of holding lands and towns a feudal system began to develop in parts of Ireland. . It is not reasonable to expect the Irish to show the traditional respect to an enemy who showed none in return. The effects of the Viking influence on Irish tradition can easily be seen in how the natives fought their wars after the arrival of the outsiders. No longer were certain things, such as monasteries, sacred and not to be interfered with. The Vikings upon first arrival were not Christian and so had no comprehension of the sanctity of monasteries, rather, they saw them as sources of great wealth and bounty. In order for the Irish to remain competitive in war they had to rebut in the same fashion. They did so by neglecting their traditions and attacking monasteries in Viking held positions. Viking kingdoms were established and were as active in the wars on the island as the clans who fought each other before their arrival. As intermarriage blurred the distinguish ability of Viking communities from native communities the people were divided less and less by race and more by kingdoms with none becoming dominant over the island as a whole. By the 1150s the Vikings had become much less a foreigner as a people who were establishing their own kingdoms on the island which the three predominate families of the island tried to rule over The most notable Norse Kingdom is that of Dublin where the Vikings traded with much of Europe. 10 It was during such a time that the English presence began in Ireland. In 1166 Dermot MacMorrough, a King of Leinster and Dublin, appealed to King Henry II of England to help him in his quest to regain his thrown and ultimately become king of all Ireland. The families he had ruled over did not whole-heartedly support him. As a result, when he stole the wife of another Irish king, O'Rourke of Breffni, the peoples who were to support him had an excuse not to. He was ousted in what had become a routine power shift like many which had occurred over the previous two centuries and was banished. In his mind he felt abandoned by his allies and so he looked to England for help in regaining his position. 11 He went to England because he had influential contacts there whom he met while they were trading in Dublin, as many people from all over Europe did at that time. 12 Henry II, who was fighting his own wars in France, agreed to help with his own motives in mind. He realized the value of the trade rich coastal cities such as Dublin and Waterford and realized Dermot would be in his debt should his attempt at restoration be successful. Henry himself was not able to help due to the battles he was involved with at the time. He drafted a letter addressed to all his subjects, who were many as he was the most powerful king in Europe at the time. In it he stated his approval for the cause of Dermot and encouraged all to aid him realizing that they went in his name. 13 Equipped with the letter of endorsement Dermot set out to recruit the force with which he would conquer Ireland. Using monies loaned to him by his wealthy friends and giving promises of lands and titles to those who helped him he was able to muster a small force. He was also able to assure promises of more men in the coming years from someone who would become a predominant figure in the years to come, Richard fitz Gilbert also called Strongbow. This man was eager to help because he was out of favor with Henry as he did not support him in the English Civil War. To Strongbow Dermot promised his daughter in marriage, making him the heir to whatever territories they gained. Using his new allies, Dermot returned in 1167 and reinstated himself in his old capital where for the next two years he waged small scale wars against his old enemies. As his enemies were still pre-occupied fighting each other he was able to regain most of his former lands and to live in peace as he awaited his next wave. 14 Having been the first Irishman to look to England for help in Ireland he was branded â€Å"Dermot of the foreigners† and is still considered the greatest traitor in Irish history as his invitation marked the beginning of the end of Irish sovereignty in the minds of many Irish. 15 It is tragic that the Irish peoples continued to fight against one another even after knowing that Dermot had aligned himself with the most powerful King Europe. Should they have worked together to throw off the English the course of Irish history would have undoubtedly been different. They would have saved themselves from the centuries of horror and catastrophic neglect which were to follow. As promised, Dermot's new allies arrived in Ireland in 1170 numbering nearly 2000 men. These newcomers held a tremendous advantage over the natives in the form of their advanced weapons. They possessed archers which proved to be an essential part of their success in the conquests that followed. They soon gained control of strategic coastal cities where they established themselves and expanded from, mostly winning territories on the eastern half of Ireland and proceeding westward. 16 The Character of Dermot is one dominated by greed and selfishness but also fierce determination. In the city of Waterford Strongbow married Dermot's daughter and secured his place as heir. Having effectively given what had become the highest position in Ireland to a foreigner it is easy to see why Dermot is seen as a traitor. Another account tells of how Dermot abandoned his own son for power. As a condition for peace upon his arrival he gave his son to one of his enemies to be held as assurance that Dermot would not go on the offensive. 17 Knowing that his son would be killed he pressed on anyway. These actions show the greed and self-fulfilling character of Dermot, he wished to be King of the Irish at any cost. He cared only about his time and did not bother himself with what would become of his kingdom after his death when he could not personally benefit. Following Dermot's death in 1171 Strongbow assumed control, however it was not a smooth transition. Many natives did not recognize him as a legitimate king and rebelled against his authority. Strongbow was able to maintain control but it became increasingly difficult for him after Henry II, who was still unsure of his loyalty and motives, took measures to limit Strongbow's control and future successes. Henry cut off supplies and reinforcements fearing Strongbow would establish a powerful rival regime so close to England. As a result the new regime had difficulty fending off the Irish who resented his presence and authority and they spent more time fending off attackers than expanding their influence. 8 Henry was not confidant that Ireland was under his control or that it did not pose a future threat even after Strongbow reaffirmed his loyalty to him and submitted the conquered lands to him. Henry decided to travel there and ensure that his objectives were accomplished; he was surprised and encouraged by the accomplishments of his countrymen and was confident that the entire island could be brought under his control. There is evidence to suggest Henry anticipated battle as he brought with him the largest English army to date, 5000 men, and provisions to last them for months. 9 It is difficult to imagine the state of mind the Irish were in while anticipating the arrival of Henry, they would have undoubtedly realized the threat he posed to them and the power he possessed. The fear of what was to come would have weakened the resolve of the forces still trying to fend off the existing English. Henry finally arrived in Waterford in 1171 and became the first English king to set foot on Irish soil and immediately received the appropriate respect from the Irish. 0 The presence of his army was more useful than their skills or techniques as they did not have to fight a single battle. All leaders of Ireland, except one high-king in the north-west, submitted to Henry knowing that if a battle was fought, they would not win. Due simply to his superior army Henry was able to conquer almost the entire island without fighting a single battle. Upon leaving Ireland Henry made his son John Lord of Ireland under who the leaders who had submitted to Henry ruled. When John became King of England Ireland was incorporated into the English Kingdom. The implications of theses events would be felt throughout the rest of Ireland's history. 21 When Henry II departed Ireland with poise he left behind him a new form of Ireland. Some new concepts were simple such as new foods he had introduced in an attempt to impress the subjugated Irish kings at a lavish dinner. He also effectively pushed most Irish and Viking inhabitants out of Dublin22. Others were more fundamental to the Irish way of life. A more strict enforcement of the evolving Christian church form was to take place in Ireland where it had not been adopted. This was made possible because now the church could spread a uniform throughout a single Kingdom. The new form of the church was adopted by the Irish and has shaped the faith of the Irish ever since. Even later when the English reformed and become Protestant the Irish remained Catholic. 23 This fundamental divide has shaped relations between Ireland and her authority to the current time. It is seen in the bitter relationship between the Catholic Irish Republic and the Protestant Northern Ireland, which remains part of Great Britain even now. This difference was a focal point of the separation of the two in 1922 as many inhabitants Northern Ireland were of English backgrounds whose ancestors had settled there and been upper-class citizens. The concept of feudalism was spread after Henry departed, this would prove to be a source of discontent among the Irish for the remainder of their subjugation. Two English Lords were appointed by Henry, given lands which belonged to Irishmen. They established feudal regimes in their territories as the remaining Irish kings continued in their traditional fashion. 4 Eventually, despite strong political and physical opposition from the Irish, the concept was spread throughout the entire island and the plight of the Irish took full effect. The fact that the Irish, along with their customs and heritage, were thrown aside in order for the egos and greed of the Kings men to be satisfied is unsettling. The English portrayed the Irish as uncivil and barbaric, but to in reviewing the English beha vior treatment of the natives a paradox is seen. Henry also began a long and merciless neglect and exploitation of the Irish people and their land and crop rights. All Irish Kings and English Lords he had put in place had to pay a tax to him. The payment of this tax would become another focal point in English-Irish relations. The most evident example of this came in 1845-1847 when many Irish were forced to leave their homelands due to famine. The potato famine caused over one million people to leave from 1847-1851 and the deaths of tens of thousands due to starvation. 25 The Irish starved because they were forced to export their crops, such as corn, to England as a tax. In most years this left them with little more than potatoes to eat and when they did not grow the deprivation took its toll. If the taxes have been forgiven in these years the displacement and death of over a million Irish could have been prevented. The Irish world was self-concerned and to an extent underdeveloped before the arrival of any foreign people, when power was finally returned to the Irish people in 1922 the entire landscape had changed. The distressing point in this fact is that the Irish had very little to do with shaping their country for over 800 years, instead it was shaped by the prerogatives of outsiders. The foreigners to settle in Ireland did also leave some positive marks such as key cities, trade partnerships, and the development of Irish nationalism. The most apparent sign of English influence today is that they remain the highest authority in Northern Ireland. If any lessons are to be learned from how the Irish handled the arrival of the Vikings and the English it is that a country divided against itself will fall. If they have worked together the fate of the Irish people, and Europe, would have been much different.