The Crucible Theme Essay Example For Students

The Crucible Theme Essay Giles Corey, Rebecca Nurse, and John Proctor all have something in common which endanger them when the witch-hunt begins. The play, The Crucible, by Arthur Miller is a portrayal of the Salem witch trials. In the play there are three characters, Giles, Rebecca, and John all die at the end. These three people all have something in common which endangers them during the witch-hunt and later leads to their death. The one thing that these three people have in common is that they are all full of pride. One of these people is Giles Corey. In the play he is killed for two different things. One thing was that he would not give Danforth the name of the person who told him that Thomas Putnam was trying to get rid of the people in the town so that he could buy their land when they were gone. This is what originally got him arrested. Later they charged him as a witch and he would not answer his indictment. Because he didnt answer his indictment they could not charge him with being a witch. Therefore, he saved his name and his pride. We will write a custom essay on The Crucible Theme specifically for you for only $16.38 $13.9/page Order now Another person who has the same thing in common with Giles is Rebecca. Throughout the play there are time where she shows the reader these qualities. When she is faced with something she will always follow her religion. Never will she go against her religion even if it means to save her life. An example from the book is when she is in court and in jail Hale is begging with her to confess. She will not confess and she is later hung. Because of her stubbornness or pride she lost her life. Another person is John proctor who also his pride gets in the way of his decision making. One reason, which goes along with most of the people, was that he did not confess in the court. Later in the story, however, he does decide to confess. He signs the papers and everything. He is fine with this until he finds out that the signed confession will be posted on the door of the church. When he finds this out he then rips up the paper and does not confess. He is also hung for this and all because he wanted to save his name. In The Crucible many people were falsely accused and murdered for no reason. These three people could have prevented their own death if it were not for their pride. All they had to do was confess and spend some time in jail and that would be it. Because they wanted to save their names and pride they all ended up killing themselves. Bibliography:The Crucible

10 Things I Learned about Sales from Selling Gum

10 Things I Learned about Sales from Selling Gum On March 7th, I joined a new group to hone my sales skills. Sales Lab, a class at The Wright Foundation, is a place to get coaching and accountability around my sales activities. On my first day, I was asked to share about my business for a few minutes, and then the leader said these terrifying words: â€Å"Your first assignment †¦ is †¦ to sell gum. You must sell it for no less than 25 cents per piece, and you are to sell it in as many different ways as possible, for as much as possible.† My heart rate skyrocketed. Sell gum? Are you kidding me? I learned from my dad at a young age that gum chewing was a bad thing, and that I should never do it. I can count on my two hands the number of times I have chewed gum in my life. And now I was going to sell it? Wow, maybe I wasn’t cut out for this. Then I remembered that I am someone who does not get stopped by fear – and that I could start with baby steps. So I called a friend, who connected me with another friend who works at Wrigley. She gave me some ideas of what could work best for selling gum. She warned me that gum does not sell well online. People like to have it in front of them for impulse purchases. Further research entailed a Facebook message asking my friends what their favorite gum was, and I immediately went out and bought the most popular ones. I wanted to have desirable gum in my possession when I asked people to make those impulse purchases! (A Facebook post asking people to buy gum predictably got exactly 0 responses, confirming the â€Å"in-person† hypothesis. But I’m going to try to disprove it – see below.) Hitting the Streets to Sell My first idea of how to sell gum for high prices was to sell it for charity. I thought it would be a lot easier to sell for a cause than just to walk up to people and ask them to buy gum for 25 ¢/piece. I started carrying gum everywhere. My first sale was in my yoga studio, where one of my fellow yoginis told me she would buy the gum so I would shut up (all in fun). I accepted her $5 check to give to the Clean Lakes Alliance. I continued asking people I know, and a few I didn’t, if they would like to buy gum to support the Clean Lakes Alliance. Pretty much everyone is a fan of this charity, so I didn’t have to work too hard. I raised over $100 in just a few days. I also brought gum to my business planning workday with ActionCOACH. With their permission, I raised money for a charity they support, B1G1. One participant, Mason Tikkanen of Motus Financial, bought a pack of Extra Spearmint gum for $20. One of my favorite moments was when Mason’s girlfriend heard about the transaction and said, â€Å"Mason, I want you to buy me a pack of gum!† Out came another $20 for a single pack. Selling purely for myself was harder. What would make someone spend 25 ¢ per piece of gum (or $1 for 4 pieces) when they could buy a whole pack for $1? I noticed how much more fear came up for me when I was not leaning on charity as a justification for my high prices. I tried â€Å"I’m selling gum. How much would you like to buy?† That worked with people who knew what I was up to. In some situations, I promoted the feature of a â€Å"variety pack† – You could get 4 different flavors of gum for $1. That’s something you don’t get in the stores. And you can’t buy just one piece of gum in the stores either. I got some mileage from that as well as from â€Å"I’m doing this for a class.† 10 Sales Lessons from Selling Gum I count my gum selling project as a success. Here’s a list of some of the things I learned, in addition to the above: Relationship is key. People I knew, or who had a common connection with me, were more likely to buy than people I did not know. Sales can build relationship. I had more in-depth conversations with some of the people I sold to than I ever had before. Follow-up is also good for relationship. One woman let me know she didn’t like the gum I sold her. I gave her a couple of free pieces and I had a happy customer! When I’m selling, I often feel very alive as I think of new, creative ideas, especially when they work – and I often feel hurt when I experience rejection. This is all part of the game. People spend money when they think they will make someone else happy, or when the money is going to charity. One woman started with a no, but then got excited about wrapping the gum in a bow and give it to her daughter, along with a sweet note. Giving free tastes leads to more sales. Many people do not carry cash, but they will pay by Venmo, PayPal, Chase QuickPay, etc. If they want to buy, they’ll find a way. People don’t buy under pressure. The best time to sell things is when people are hanging around and not trying to get somewhere. If you are a pet owner, be careful if you buy anything with Xylitol. As healthy as Xylitol might be for humans, it’s very harmful to pets! A huge majority of gum chewers want minty gum. That’s why the minty gum is so prominent in drug store aisles. Juicy Fruit just doesn’t take care of coffee breath. It’s often cheaper to buy gum in single packs than in multi-packs. No bulk discounts for consumers in this market. Wanna Play? My gum sales are going to end at the end of the day today, March 20th. You have a chance to buy some gum from me! No obligation of course, but if you think this would be fun, then please play with me! I have flavors like Orbit Wintermint, Extra Spearmint, Trident Strawberry, and Spry Peppermint, Spearmint, and Cinnamon. I’ll get different flavors if they are your favorites. If you’d like to have some fun with gum, pick 4 or more pieces you want and I’ll mail you a special package of your chosen gum. It will be in a cute bag and everything. Minimum purchase is $1 and you can buy as much as you want at minimum 25 ¢/piece. You can pay by Venmo (@Brenda-Bernstein), PayPal (brenda.bernstein@att.net), or Chase QuickPay (brenda.bernstein@att.net). I might be crazy, but life is all about risk, so I’m doing this! Curious to see how you respond. Category:Blog ArticleBy Brenda BernsteinMarch 19, 2018 2 Comments Larry says: March 20, 2018 at 8:45 am Lesson Number 1- Dont try to sell gum to someone who has been having major dental work. (Which is why I cant help you out this time.) Lesson Number 2 This one Ive learned from your posting. Sales of low cost items to consumers is quite different than sales of high cost items to businesses. (Back when I sold global computer online solutions to top corporations for GE, they gave us several sales courses that went into exact wording to use at various points, flowcharts, etc. that worked!) Lesson Number 3 I wish I could remember how I sold the most of some similar item when I came in first for my Hebrew School, a long time ago. Lesson Number 4 My mother (of blessed memory) took up gum chewing when she gave up smoking. So perhaps finding a source of people who quit smoking might be one approach. I do agree that building relationships is important. The question is whether you can successfully do that remotely over social networking? Log in to Reply Brenda Bernstein says: March 20, 2018 at 8:57 am Thanks for your insights, Larry! True no gum for anyone with dental issues. It sticks to things. Regarding the relationships over social networking, I believe its possible. When I sent out an offer last week to get my LinkedIn Profile Review service for $50 for a limited time, 10 people stepped up to take advantage of the offer. I believe they felt a level of relationship and trust with me because of my ongoing writing and visibility. Many of them had been following me for years. When I spoke with them, I felt like we knew each other on some level, even though our only connection is that they have been reading my blog. That level of connection might not be enough to sell gum, but well see! Log in to Reply

Hyundai case study Example | Topics and Well Written Essays - 250 words

Hyundai - Case Study Example Hyundai Motor Company is considered one of the best performing motor companies even in the face of the effects that followed recession. Factors of success within the firm which has beaten fort to take the fourth place in the motor industry applies strategies like the implementation of strong leadership and the continuous introduction of new models in the market to suit the preference of consumers within the different markets (Schmitt). Even with the likes of competitors like Tata and General Motors, among other, Hyundai has managed to do well in markets like Korea and other international markets in spite of having greater production capacity than their sales capabilities. Hyundai’s success is also attributed to their sensitivity to opportunities, say to the diversity that exists within the Middle East and their efforts in partnering with other firms. Their affiliation with Guangzhou Motor Group, in the year 2002, for instance, helped boosts the level of sales within the firm a nd therefore its overall performance (Yeats 54). The firms focus on producing the right products for the markets has also been of essence in helping Hyundai succeed like it has at the global levels. Basically, the demands of the consumers govern the ways by which the firms produce their automobiles. For example, the extremely high quality demand by the Korean populace has all through the time, made the company centre on always producing the best quality products for the markets (Davidson and Goldsmith 34). The stringent competition that exists from other car makers has also forced the firm to continually improve on all the aspects of production (Hyundai Motor America). The firm has even been ranked as the best in terms of customer satisfaction. Hyundai Motor America. Hyundai Motor America Reports Record January Sales. N.d. Web. February 27, 2012. Schmitt,

Information Security and the National Infrastructure Case Study

Information Security and the National Infrastructure - Case Study Example The present research has identified that in the very old resist among defender and attacker, the attacker above ever comes into view to have the benefits by being well armed, generously deciding the strength of the attack and the target and without constraints of geographical distances and frontiers. In addition, the Federal Government administrator has approved actions against security and vulnerability based issues which have become more and more critical for national infrastructure in the United States began by the PDD (Presidential Decision Directive/NSC-63) on CIP (Critical Infrastructure Protection), approved by Bill Clinton in 1988. Additionally, the managerial synopses of those directives involve the protection of national natural resources for better corporate management and handling. Moreover, national critical infrastructures are based on cyber or physical systems that are essential to the lowest processes of the financial and government departments. In this scenario, thes e departments comprise, however, are not limited to, energy, telecommunications, finance, banking, water, transportation and emergency systems and services; in cooperation with private and government. Additionally, the majority of the nation’s important infrastructures have traditionally been logically and physically detached systems that had small mutual dependence. However, in the result of advancements in information technology and the need for increased performance, these arrangements have turned out to be more and more interlinked and automated.

Forming stage of a team Essay Example | Topics and Well Written Essays - 500 words

Forming stage of a team - Essay Example The process of forming a team and identifying a set of value and norms takes time, this process takes five stages that were highlighted by Tuckman the 1960’s and revised in 1977. Forming is the first stage of the Tuckmans team development model, and at this stage, the individual team member comes together with a sense of anticipation and commitment towards working as part of a team. In our table, this has been experienced where members have accepted to come together in order to become members of our team during the meetings. In our team meetings, individual members feel that they should be committed, and anticipations are high towards working together to achieve the team’s objectives. In the forming stage, motivation of members is high because members appreciate the fact of being selected to become part of the team. In our class meetings, members are motivated towards working together in the team. Every individual is seen to be in positive attitude so that cohesiveness is maintained in the team. Members are usually high in spirit during discussions and this helps to boost motivation in the team. Secondly, this stage is characterized by anxiety of members because they might not have met each other anywhere else before. Hence, individuals are anxious to meet new people who are different in personalities. In addition, members are anxious because they do not know what kind of work they are going to do in the team. This is because they are not sure or their purpose in the team, and they do not know what is expected of them. In our table, members had not worked anywhere else before as a team and hence, there was anxiety, which was felt when we came together as a team t he first time. The forming stage is also characterized by expression of personal relations and dependence of members on each other. This means that individuals highly rely on the

Wear Rate of an Advanced Polymer Coating Experiment

Wear Rate of an Advanced Polymer Coating Experiment CHAPTER 1 1.0 INTRODUCTION The general purpose of coating is to protect the substrate and to be decorative, enhancing the appearance of substrate in terms of gloss, colour, adhesion and wetability. Consequently, in addition, surface properties such as resistance to wear, indentation, and scratching are critical to retain the basic functions [1, 2]. Polymers are common materials which are widely used in industry. Polymer coating acts as a protective covering in corrosive environments. The properties of polymers depend largely on the structures of individual polymer molecules, molecule shape and size as well as how molecules are arranged to form a polymer structure. Polymer molecules are characterised by their very large size a feature that distinguished them from other most organic chemical compositions. The wear rate for an advanced polymer materials varies depending on the applied normal load and the sliding speed which is affected by size, shape, the matrix composition and the test conditions [3]. As the load decreases the contact becomes elastic with consequent changes in mechanism of friction. Epoxy resin are characterized by the presence of three- member cyclic ether group commonly referred to as an epoxy group, epoxies cross-link when a catalyzing agent (hardener) is added, forming a three-dimensional molecular network. Because of their outstanding bonding strength, epoxy resins are used to make coatings, adhesives, composite laminates and have important applications in the aerospace industry. Epoxy powder coating is still widely used today, especially as a functional and tough coating where flexibility, adhesion, toughness and corrosion resistance are needed. Epoxy coatings are based on epoxy resin; they are manufactured in a way which enables the possibility of coating to a certain thickness without defect in the coating after curing [14, 16]. Epoxy power coatings get a good adhesion to aluminium or steel surfaces, and provide a good corrosion protection layer (for indoor use). Most outstanding with powder finish is the excellent resistance against other chemicals. Epo xy powder coatings are suitable especially in aggressive environments. However, they are not suitable for external use where they become discoloured as the pigments are broken down by ultra violet rays when exposed to sunlight. They consequently become chalky and actually decreased in thickness as they are washed away [15]. 1.1 AIM The main aim of this project is to determine the effect of sliding speeds on the wear rate of an advanced Polymer coating. 1.2 RESEARCH OBJECTIVES The objective of this project is to investigate the wear rate of an advanced powder coating using a reciprocating linear ball-on-flat sliding machine. Due to the nature of the resources required to run the experiments, this investigation included the careful attention taken for wear testing especially in areas of the ball-on-flat sliding machine, data acquisition and wear rate calculation. The technical approach for the investigation will involved preparing different test specimens cured at temperatures of 140oC, 160oC, 180oC, and 200oC respectively. These test specimens would then be tested for one hour at sliding speeds of 0.02 m/s, 0.03 m/s and 0.04 m/s on a fixed normal load of 0.76 kg. Data from the wear testing would be acquired at once as electrical signals through with the help of electronic data acquisition devices. Also this would involve investigating and analysing the microstructure of the all the tested coated sample to see the level of damage done to it at the above temperatures and sliding speeds. CHAPTER 2 2.0 LITERATURE REVIEW 2.1 POLYMERS Modern scientific tools revolutionized the processing of polymers thus available synthetic polymers like useful plastics, rubbers and fibre materials says (Satish V. Kailas) [38]. As with other engineering materials (metals and ceramics), the properties of polymers are related their constituent structural elements and their arrangement. The suffix in polymer ‘mer is originated from Greek word meros which means part. The word polymer is thus coined to mean material consisting of many parts/mers. Most of the polymers are basically organic compounds, however they can be inorganic (e.g. silicones based on Si-O network). This chapter introduces classification of polymers, processing and synthesis of polymers, followed by mechanism of deformation and mechanical behaviour of polymers [10, 11, 38]. Polymers are classified in several ways by how the molecules are synthesized, by their molecular structure, or by their chemical family. For example, linear polymers consist of long molecular chains, while the branched polymers consist of primary long chains and secondary chains that stem from their main chains. However, linear does not mean straight lines. The better way to classify polymers is according to their mechanical and thermal behaviour. Individually, polymers are classified into two main classes plastics and elastomers [10, 11]. 2.1.1 PLASTICS Plastics are mouldable organic resins. These are either natural or synthetic, and are processed by forming or moulding into shapes. Plastics are important engineering materials for many reasons. They have a wide range of properties, some of which are unattainable from any other materials, and in most cases they are relatively low in cost. Following is the brief list of properties of plastics: light weight, wide range of colours, low thermal and electrical conductivity, less brittle, good toughness, good resistance to acids, bases and moisture, high dielectric strength (use in electrical insulation), etc. Plastics are again classified in two groups depending on their mechanical and thermal behaviour as thermoplasts (thermoplastic polymers) and thermosets (thermosetting polymers) [10, 11]. 2.1.2 TYPES OF PLASTICS 2.1.2.1 THERMOPLASTS These plastics soften when heated and harden when cooled processes that are totally reversible and may be repeated. These materials are normally fabricated by the simultaneous application of heat and pressure. They are linear polymers without any cross-linking in structure where long molecular chains are bonded to each other by secondary bonds and/or inter-wined. They have the property of increasing plasticity with increasing temperature which breaks the secondary bonds between individual chains. Common thermoplasts are: acrylics, Vinyl resins (PVCs), polyethylene, polypropylene, polystyrene, polyimide, ABS (acrylonitrile butadiene and styrene) etc [10, 11]. Acrylics (poly-methyl-methacrylate) They are characterised by outstanding light transmission and resistance to weathering; only fair mechanical properties. Their applications are mostly in lenses, transparent aircraft enclosures (aeroplane windows), drafting equipment, and outdoor signs [17]. Polystyrene They have low specific gravity (1.07), availability in colours form clear to opaque, resistance to water and most chemicals, dimensional stability, insulating ability. Polystyrene is an excellent rubber substitute for electrical insulation. Styrene resin is moulded into battery boxes, dishes, radio parts, lenses, flotation gears etc [17]. Polyethylene These materials are flexible at room and low temperatures, waterproof, unaffected by most chemicals, capable of being heat-sealed, and can be produced in a variety of colours. Polyethylene, which floats on water, has a density range from 0.91 to 0.96% and is one of the inexpensive plastics, and its moisture-resistant characteristics ensure its use for packing and squeeze bottles [12, 17]. Polyethylene Polymer Table 2.1 Properties of polyethylene Polypropylene Polypropylene has excellent electrical properties, high impact and tensile strength and is resistant to heat and chemicals. Monofilaments of polypropylene are used in making rope, nets, and textiles. Polyimide These thermoplastics are produced in the form of solids, films or solutions. They have unusual heat-resisting properties up to 750oF (400oC), low coefficient of friction, high degree of radiation resistance, and good electrical properties. Products from this include sleeve bearing, valves seats, tubing, and various electrical components. The films, tough and strong, are used for wire insulation, motor insulation, and printed circuit backing [17]. ABS (Acrylonitrile, Butadiene, and Styrene) This plastic can be compounded to have a degree of hardness or great flexibility and toughness. The ABS plastics are used in applications that requires abuse resistance, colourability, hardness, electrical and moisture properties, and limited heat (2200oF (105oC). These plastics and processed by thermoforming injection, flow, rotational, and extrusion moulding. Applications include household piping, cameras, electrical hand tool housings, telephone handsets, and canoes [12]. Vinyl Resins These thermoplastic materials can be processed by compression or injection moulding, extrusion, or blow moulding. Vinyl resins are suitable especially for surface coating and flexible and rigid sheeting. The vinyl resins commercially available include polyvinyl chlorides (PVCs), butyrates, and polyvinylidene chloride. Polyvinyl chloride has a high degree of resistance, to many solvents and does not support combustion. It is used for rubberlike products including raincoat, packaging and blow-moulded bottles. Polyvinyl butyrate is a clear tough resin, which is used for interlayers in safety glasses, raincoats, sealing fuel tanks, and flexible moulded products. It has moisture resistance, great adhesiveness, and stability towards light and heat [17]. 2.1.2.2 THERMOSETS These plastics require heat and pressure to mould them into shape. They are formed into a permanent shape and cured or ‘set by chemical reactions such as extensive cross-linking. They cannot be re-melted or reformed into another shape but decompose upon being heated to too high a temperature. Thus thermosets cannot be recycled, whereas thermoplasts can be recycled. The term thermoset implies that heat is required to permanently set the plastic. Most thermosets composed of long chains that are strongly cross-linked (and/or covalently bonded) to one another to form 3-D network structures to form a rigid solid. Thermosets are generally stronger, but more brittle than thermoplasts [10, 11]. An advantage of thermosets for engineering design applications includes the following: high thermal stability, high dimensional stability, high rigidity, light weight, high electrical and thermal insulating properties and resistance to creep and deformation under load. There are two methods whereby cross-linking reaction can be initiated cross-linking can be accomplished by heating the resin in a suitable mould (e.g. bakelite), or resins such as epoxies (araldite) are cured at low temperature by the addition of a suitable cross-linking agent, an amine. Epoxies, vulcanized rubbers, phenolics, unsaturated polyester resins, and amino resins (ureas and melamines) are examples of thermosets [10, 11]. Phenolics These resins for popular for thermosetting applications. The synthetic resign, made by the reactions of phenol with formaldehyde, forms a hard, high-strength, durable material that is capable of being moulded under a variety of conditions. It is characterized by excellent thermal stability to over 150oC (that is, has high heat and water resistance) and can be coloured in a variety of way; may be compounded with a large number of resins, fillers [12]. It is used in manufacturing coating materials, laminated products, grinding wheels, and metals as well as glass bonding agents, and can be cast into moulded cases, bottle caps, knobs, dials, knife handles, electrical appliance cabinets and numerous electrical parts [17]. Epoxy Resins Epoxy resins, both monomers and oligomers, can be powders or they can be thick and clear or yellow liquids with strong and unpleasant odours. They are known for their excellent adhesion, chemical and heat resistance, excellent mechanical and good electrical insulating properties. Moulding a fibre reinforced epoxy composite is much easier compared to other thermoset resins [19]. The typical applications of epoxy are in adhesives, electrical parts, coating and lamination process, moulds/dies/tools and in military, biomedical and automotive fields. Epoxy being a thermoset polymer, during the process of curing, when mixed with curing agent or harder, polymerises and cross-links. In other words, this curing agent reacts with epoxy resin monomers to form epoxy product. The curing agent selection will determine to a large extent the performance of the final epoxy composite. Table 2 below shows the properties of epoxy resins. Table 2.2 Properties of Epoxy resins Epoxy resins are the major part of the class of adhesives called ‘structural adhesives. These high performance adhesives are normally used in the construction of aircraft, automobiles, bicycles, golf clubs, snowboards and other applications where strength bond are required. Also, they are exceptional adhesives for wood, metal, glass, and some plastics. Epoxy resins can be made flexible of rigid, transparent, opaque or coloured and fast setting or extremely slow setting. Furthermore, epoxy adhesives are unmatched in heat and chemical resistance among other adhesives. Usually requires heat curing for maximum performance [22]. Therefore epoxy adhesives cured with heat will be more heat and chemical resistant than those cured at room temperature. Also, the peak adhesion strengths achievable for epoxy/metal interfaces depends greatly on the types and sequences of wet chemicals used to treat the surface. For all these reasons, they are used in high performance and decorative flooring applications too [22]. Epoxy coatings are also widely used as primers to improve the adhesion of automotive and marine paints especially on metal surfaces where corrosion resistance is important. However, they are not used in the outer layer of a boat as they can deteriorate when exposed to ultra violet light. But they are often used during boat repair and assembly and also over-coated with conventional paints or marine varnishes which can provide ultra violet protection [23]. Also, metal cans and containers are often coated with epoxy to prevent rusting especially for foods like tomatoes, which are acidic in nature. In addition, epoxy resin is an excellent electrical insulator too. It helps to protect electrical components from short-circuiting due to dust and moisture. Hence, epoxy resins are important in the electronic industry, finding application in motors, generators, transformers, switchgears, bushings and insulators. Also, in the electronic industry, epoxy resins are the primary resin used in moulding integrated circuits, transistors and hybrid circuits. The cured epoxy is an insulator and a much better conductor of heat than air. Using epoxy in transformers and inductors greatly reduces hot spots which in turn give the component a stable and longer life than unprotected products [24]. Another interesting property of epoxy is that it does not stick to mould release compounds like paraffin wax, polyethylene sheeting, sandwich bags and the non glued side of packaging tape which is of great use during lay-ups and also during the manufacturing of precision parts. Though epoxy resins are more expensive than any other resins such as polyester resins, in brief, the purpose of selecting epoxy as the base resin for this research is because of its un-matching high chemical and thermal resistance, good adhesion to various materials, compatibility with various substrates and other additives, low shrinkage, availability of solvent free formulations, light in colour, easy to control viscosity and low vapour pressure besides holding good to excellent mechanical properties and very good electrical insulating properties. The properties of polymers depend largely on the structures of individual polymer molecules, molecule shape and size as well as how molecules are arranged to form a polymer structure. Polymer molecules are characterised by their very large size a feature that distinguished them from other most organic chemical compositions. 2.1.2.3 ELASTOMERS Polymers are long-chain molecules that are formed by polymerization (that is by linking and cross-linking of different monomers. A monomer is the basic building block of a polymer. One of the fascinating properties of the elastomeric materials is their rubber-like elasticity. That is, they have the ability to be deformed to quite large deformations, and then elastically spring back to their original form. This results from the cross-links in the polymer that provides a force to restore the chains to their undeformed conformations. Elastomeric behaviour was probably fist observed in natural rubber; however, the past few years have brought about the synthesis of a large number of elastomers with a wide variety of properties. Typical stress-strain characteristic of elastomeric materials is displayed in figure 2 curve. Upon stretching, it is immediately noted that there is a flat region in the stress-strain curve. This essentially means that after an initial elongation, there is a region stretching which occurs without increasing strain. 2.2 CRYSTALLIZATION, MELTING AND GLASS TRANSITION Polymers are known by their high sensitivity of mechanical and/or thermal properties. This section explains their thermal behaviour. During processing of polymers, they are cooled with/ without presence of presence from liquid state to form final product. During cooling, an ordered solid phase may be formed having a highly random molecular structure. This process is called crystallization. The melting occurs when a polymer is heated. If the polymer during cooling retains amorphous or non-crystalline state i.e. disordered molecular structure, rigid solid may be considered as frozen liquid resulting from glass transition. Thus, enhancement of either mechanical and/or thermal properties needs to consider crystallization, melting, and the glass transition. Crystallization and the mechanism involved play an important role as it influences the properties of plastics. As in solidification of metals, polymer crystallization involves nucleation and growth. Near to solidification temperature at favourable places, nuclei forms, and then nuclei grow by the continued ordering and alignment of additional molecular segments. Extent of crystallization is measured by volume change as there will be a considerable change in volume during solidification of a polymer. Crystallization rate is dependent on crystallization temperature and also on the molecular weight of the polymer. Crystallization rate decreases with increasing molecular weight. Melting of polymer involves transformation of solid polymer to viscous liquid upon heating at melting temperature, Tm. Polymer melting is distinctive from that of metals in many respects melting takes place over a temperature range; melting behaviour depends on history of the polymer; melting behaviour is a function of rate of heating, where increasing rate results in an elevation of melting temperature. During melting there occurs rearrangement of the molecules from ordered state to disordered state. This is influenced by molecular chemistry and structure (degree of branching) along with chain stiffness and molecular weight. 2.3 POLYMER COATING The task of coating technology is to provide surface protection, decorative finish and numerous special functions for commodities and merchandise by means of organic coatings. Many everyday products are only made useable and thus saleable because their surface treatment. To achieve this, relevant coating formulations, their production plant, the coating material and suitable coating processes for product must be available. However, the quality to be achieved by means of coating process is not the only function of the coating material used. The object to be painted or coated itself with its specific material and design and appropriate application process are further variables which play a significant role. Coating itself is a layer of material which is applied to a surface to decorate, preserve, protect, seal, or smooth the substrate; usually applied by brushing, spraying, mopping, or dipping [26]. There are two principal technologies that are the backbone of the coatings industry: Ø Liquid coating technology (wet), which has been applied for more than two centuries Ø Powder coating technology (dry), which has been applied on an industrial scale for some 30 years. 2.3.1 WHY POWDER COATING The global average annual growth for powder coatings has been approximately 7-9% over the last 10 years. From country to country worldwide these figures have varied considerably. This relatively high performance has been achieved by autonomous growth on the one side and by replacing liquid coatings on the other. Powder coating involves applying a finely grounded resin (powder) to a substrate and subjecting this powder to heat. During the heating process, the powder melts and creates a uniform, continuous coating [26]. The use of powder coating as a finishing process has grown significantly in the past several years. It dates back to the 1950s when powders were flamed-sprayed on metallic surfaces to protect them from corrosion and abrasion. As the process evolved, most powder-coating application involved lowering a heated part (sometimes referred to as a â€Å"ware† or a â€Å"substrate†) into a bed of fluidized powder. However, this process resulted in inconsistent film thickness. Electrostatic introduced in the early 1960s, enabled powder coatings to be applied to cold substrates, resulting in more uniform, thinner surface application and thus, savings in raw materials [26]. Today, powder-coating processes are employed in many production settings involving protective finishes. Powder formulations can be created to deliver cosmetic, protective, and longevity characteristic, and to achieve maximum hardness, chemical resistance, and gloss retention. More and more companies have turned to powder coating as a way to produce a high-quality finish while increasing production rates, cutting costs, and complying with increasing environmental pressures. Also, ongoing technological breakthroughs are continually knocking down the few barriers that hindered powder coatings ability to grow in the market. 2.4 POWDER COATING MANUFACTURING PROCESS The process of producing a powder coating is somewhat more complex, the equipments are numerous and the production time is somewhat long. This process can be simplified into 4 basic stages. 2.4.1 PREMIXTURE This is the first stage in the manufacture of a powder coating and is the most crucial for production. In this stage, the various sizes of resin flake, pigment powder, etc must be transformed into a homogeneous blend of similar sizes before they enter the extrusion stage. This is for the fact that the extruder is a simple melt mixer and not a very efficient disperser; the premix equipment consists of a mixing bowl with a locking cover. The equipment is usually fitted with a cooling jacket capable of being filled with running water or cryogenic gases. Inside the mixing bowl are mixing-blades placed at different heights and orientation to one another depending on the machine configuration [27]. 2.4.2 EXTRUSION This is the second stage of the powder coat manufacture. The extruder is composed of a horizontally placed barrel. Within the barrel is a cylindrical screw shaft that is slightly smaller than the barrel in diameter. As the shaft turns, the premix moves forward through heated mixing zones. The mixing zones contain attachments called paddles that knead the melted premix and blends the various ingredients. 2.4.3 GRINDING The third phase (grinding stage) is very important to its performance. This is because the average particle size and distribution are important in the application properties and final surface appearance. In the grinder, grinds the chilled and pressed extruded mix into fine particles. This is usually done using, impact/hammer mill, air jet mill or the air classifier mill. 2.4.4 SIFTING AND CLASSIFYING The final structuring of the particle size is accomplished by passing the ground materials through sieves or cyclonic separators. This is to sort out the distribution and average particle size of the powder. 2.5 ECONOMIC BENEFITS OF POWDER COATING Although equipment and materials cost are similar in powder-coating and liquid-coating processes, yet powder coating processes provide a number of advantages over other surface coating methods. These include: Fewer rejects. Less floor space required. Less material waste. Lower energy costs. Lower training and labour costs. Lower waste-disposal costs. More efficient cleaning operations. More uniform finishes. Powder coating materials are immediately ready for use. They do not have to be mixed with any other ingredients such as solvents or catalysts and are easy to apply, thus labour costs associated with training, setup, and processing are low when compared with liquid-coating processes [26]. Liquid coating usually requires thinning before application, leading to additional material and labour costs. This is not the case with powder coating. Liquid paint requires flash-off time before surface can re recoated which is not applicable to powder, meaning that racks can be spaced closer together and thus more parts per hour can be processed [25]. Powder coating processes results in fewer rejects than liquid coating processes. Since the former is a dry process, air and water associated problems such as sags, runs, and contaminations are almost eliminated. Blowing off the surface with an air hose and reapplying the powder can easily repair coating rejects in booth or application area. 2.5.1 THERMOSETTING POWDER Most powder coating materials are thermosetting powders. The greatest technological advances in powder coatings are being made in this area. Thermosetting powders are composed of solid resins higher in molecular weight than resigns found in liquid coatings and lower in molecular weight than those found in thermoplastics. The solid resins melt and flow chemically, and cross-link within themselves or with other relative components forming a higher molecular weight reaction product. The coating film formed by this reaction is heat stable and will not soften back to a liquid on further exposure to heat (Wick and Veilleux 1985). At these higher temperatures, a coating emerges with different chemical properties than before heating. Cured coatings have different chemical structures than basic resins. Newly formed cured materials are heat stable and will not re-melt to liquid after further exposure to heat. These powders are ground from brittle resin systems into fine particles in the range of 0.004 0.0016 in (10 40 um) or less. ‘Due to the rheology of these resin systems, they can produce thin like paint coatings in the range of 0.001 0.003 in (25 75 ÃŽ ¼m) with properties equivalent or superior to coatings produced from liquid-compliance technologies [33]. The types of resins commonly used in thermosetting powder include:  § Several types of epoxies  § Hydroxyl and carboxyl types of polyesters  § Several types of acrylics, and  § Several types of silicones. They require lower temperatures for curing than thermoplastic resins. Table 2.4 Main properties of different types of thermosetting powder coatings[27] Thermosetting powders chemical reaction begins in oven. Ovens produce and maintain heat-the sole cause of chemical reaction needed for in powder coating. P

Gun Control: Should the Second Amendment of the Constitution be Updated

According to the F.B.I., 14,369 murders involving firearms took place in the year 2013 within the United States. We as Americans have the right to â€Å"bear arms,† however there can be some changes to at least try to minimize these casualties. The 2nd Amendment states â€Å"A well regulated Militia, being necessary to the security of a Free State, the right of the people to keep and bear Arms, shall not be infringed.† This may be outdated now that we have a strong military (that is our â€Å"well regulated Militia,†) to protect our security, but can a right be scratched off the Constitution because of someone’s interpretation?   Ã‚  Ã‚  Ã‚  Ã‚  Perhaps there can be some changes to the laws to determine who can own a firearm and what types of weapons can be sold. In Arizona and many other states there are no permits required to purchase any type of firearm. While other states have more laws to determine who can own a gun. New York requires you to have a permit to purchase and then register a handgun. The permit may be issued if the applicant is over 18 years of age, has not been convicted of a felony or spent more than one year in prison, and is not an addict, alcoholic or convicted of a narcotics offense. New York also requires the gun stores selling rifles, shotguns, or handguns, provide with the gun a locking device and a label on safe storage. As of March, 2001, any firearms dealer licensed in the state of New York must provide to the state police, along with the original receipt of sale, a sealed container enclosing a shell casing from the handgun sold within ten days of the transfer of a handgun.   Ã‚  Ã‚  Ã‚  Ã‚  Gun control groups are requesting a bill that would create a national handgun licensing and registration system, and that would extend the Brady law to the secondary market of handgun purchases such as gun shows. Under the Brady II legislation it will be illegal to sell, deliver, or otherwise transfer a handgun to someone who does not have an FFL (Federal Firearms License), unless the dealer verifies that the buyer has a valid state handgun license. It will also make it a violation of the law for anyone who does not hold an FFL to obtain, either through purchase or as a gift, a handgun or handgun ammunition unless they possess a valid state handgun license. Brady II would require state officials to set up and manage a license sys... ...fense is not an acceptable reason. In the years 1996-1997, Australia destroyed almost 700,000 guns, which are about one-seventh the guns in Australia. In America that number would be around 30 million. By 1998, homicides by firearms were down thirty percent in Australia. In 1991 and 1995 Canada established new gun laws reducing the number of deaths caused by guns to a thirty year low. The UK banned handguns and destroyed the guns the government bought from the citizens. Within a year later, gun-related violations have decreased by thirteen percent in England and Wales. Some say that Americans are fifty times more likely than British citizens to be killed by a firearm. Many people in America do not want to see a ban on firearms, but if that is not the answer what is? Perhaps what we need is for the anti-gun groups and the pro-gun groups to come together and reach some sort of a compromise that could help reduce our nation’s homicide rates. References: National Center for Health Statistics Center for Disease Control and Prevention FBI (Federal Bureau of Investigation) NRA (National Rifle Association) John McCain @ mccain.senate.gov www.guncite.com www.converge.org

Coping with Traumatic Life Events Essay

  Ã¢â‚¬Å"All this time, I thought I was learning to live, when all along, I was learning to die.† So said Leonardo da Vinci. We read his words, smile and think to ourselves that they don’t really apply to us. Why so? Most Westerners run from even the talk of death. True, we cry at movies like Terms of Endearment when dying is unrealistically romanticized; we weep at funerals, cheer when the bad guys die on television, and shudder at newspaper accounts of catastrophes, though we soon get over it. But as for the thought of our own death, we avoid discussing it at all cost. We deny death because we are afraid of it. This fear is so deeply ingrained that it keeps us from being fully in the present. It takes attention to hold off death. We plan. We become anxious. We busy ourselves so we do not have to think about it. And we lose contact with present time and present place where wonder and joy–and not death—exist.   Introduction Mourning is a complex process in which the bereaved separate and detach themselves from loved ones who have died and replace them with new relationships. If the work of grieving is handled well, new ties can afford equivalent or greater satisfaction to needs formerly satisfied by lost relationships. On the other hand, if restitutive relationships are not established or are incapable of equivalent satisfaction, the process of mourning becomes diverted, remaining incomplete and in danger of becoming dysfunctional. Mourning is a stressful process. It takes its toll psychologically as well as physiologically. Dysfunctional grief is the root if an astonishingly high proportion of emotional, behavioral, addictive and psychosomatic disorders. The literature of psychotherapy is rich with case materials relating symptomatology to dysfunctional grief. In recent years, an increasing body of data has accumulated relating significant increases in the incidence of physical illness and death to populations experiencing the loss of spouse or other central family members. Parkes, Bereavement: Studies of Grief in Adult Life (1973), summarizes the results of a number of studies. He concludes that mourning is a powerful stressor, subjugating body and psyche to crushing pressures, which frequently cause mental and physical illness. A survey of studies on the psychological effects of childhood bereavement is found in Chapter 9 of Furman’s (1974) volume on childhood bereavement. These studies strongly suggest that childhood bereavement, even more than adult bereavement, can be a significant factor in the development of various forms of mental illness and adult maladjustment. Counseling the bereaved Counseling can shorten the period of unresolved grief, and it can increase the probability of establishing satisfactory replacement relationships. This help can be useful in preventing and minimizing the pathological outcome of bereavement. Those interested in primary prevention of mental illness see bereavement as a crucial area requiring further research and new services. This paper takes a look at this event in one’s life and the different ways by which academic and clinical psychologists identify ways of coping that facilitates coping during these traumatic events. This hopes to guide professionals in helping the bereaved by establishing theoretical and clinical benchmarks for assessing the individual situation. The bereavement counseling task is complex and emotionally draining. The novice counselor will find it difficult to translate theoretical formulations into successful clinical work without supervision. Authors Wortman and Cohen Silver pose the question on whether certain beliefs or assumptions about how people should react to the loss of a loved one that is prevalent to Western Cultures. Thus, to determine whether such assumptions exist, they then review some theoretical modes of reactions to loss such as Freud and Bowlby’s. Apparently, it was revealed that there are strong assumptions about the grieving process in Western society. The study also demonstrates that if counseling fore bereaved individuals is based on these erroneous assumptions, then it may ultimately prove unhelpful. Understanding bereavement Early in his clinical work with healthy and dysfunctional grief, the author concluded that a theoretical map to guide the clinician through the labyrinths of normal grief is a necessity. Without a baseline description of normal grief, it is difficult to distinguish factors that lead to pathology. The writings of Lindemann (1944), Glick, Weiss and Parkes (1974), and Parkes (1973), in particular, extended the author’s thinking about the phenomena of normal bereavement. The five-stage theory of a patient’s response to terminal illness, developed by Kubler-Ross (1969), made available a theoretical model for describing the bereavement process.

Is Fashion Trivial?

Is Fashion Trivial? Malcolm Barnyard's book ‘Fashion as Communication' (Bernard, 1996) addresses the argument that fashion is trivial and is used to communicate and challenge issues. One of the topics which is discussed in this book is the topic of whether fashion is trivial' this was questioned by Elizabeth Wilson who said that â€Å"the idea that fashion and clothing are trivial pursuits is Just one popular prejudice† (Wilson, 1992). In her book she quoted a letter that was in the Guardian newspaper, which stated, â€Å"fashion s trivial and ridiculous and serious minds need not be detained by it† (Wilson, 1992).In Sharon Stellar article she says, â€Å"As civilized human beings, clothing is a requirement in order to be decent and presentable to the public. † (Sharon Stellar, August 2007) She argues that clothing does more to our body than Just covers us. â€Å"It has to ability to accentuate your figure, minimize your flaws, give you the image of either professionalism or slovenliness, convey your individuality, and make you feel your best. Sharon Stellar, August 2007) What Stellar is saying is that clothes or fashion isn't only there to Just conceal us but it is there to express ourselves, show outsiders our personality and to most importantly to feel good. However Anneal Frostier argues that without a doubt fashion is trivial, she states her own opinion that â€Å"Fashion seems to me the most ludicrous and, frankly, disgraceful thing – the whole â€Å"out with the old† thing and the waste appeals me. † (Daily Mail 2008) In a sense she is right, why should we throw away clothes after t goes out of season?Surely we buy clothes because we love the way the look or feel on us. However I do not agree with her that fashion is â€Å"ludicrous† and â€Å"disgraceful† Everything that we wear, whether it is a E top from Primary or a El 50 dress from Marc Jacobs, was designed for a reason. Many women, espe cially those in professional positions, see themselves as having no interaction with the fashion industry as they do not follow the latest trends. Nonetheless every item of clothing that they pick up and buy links them to the fashion industry.Somebody has designed the fabric, color and style specifically for that person, and that isn't something that should be ignored. If these people state that they don't follow fashion and think what they wear has nothing to do with the fashion industry, then they should be walking around naked. Personally I do not feel that fashion is trivial. Yes sometimes it can be annoying when we spend EYE on the latest cashmere cardiac, then two weeks later its already out of trend. But fashion like Elizabeth Wilson states is a way of communicating with the est. of the world; it shows others our personality and individuality.

Ladies Of Missalonghi Essays - Novellas, The Ladies Of Missalonghi

Ladies Of Missalonghi Essays - Novellas, The Ladies Of Missalonghi Ladies Of Missalonghi The author of the book, The Ladies of Missalonghi, by Colleen McCullough describes to the reader how Missy, an unattractive woman, in a small town differs from Alicia. Missy, the daughter of Drusilla did not really have any self-confidence in herself. She would begin by wondering what she really looked like. The house owned only one mirror, in the bathroom, and it was forbidden to stand and gaze at one's reflection. Thus Missy's impressions of herself were hedged with guilt that she might have stayed too long gazing. Oh, she knew she was quite tall, she knew she was far too thin, she knew her hair was straight and dark, that her eyes were black-brown, and her nose sadly out of kilter due to a fall as a child. She knew her mouth drooped down at its left corner and twisted up at its right, but she didn't know how this made her rare smiles fascinating and her normal solemn expression a clown like tragicomedy(Pg.35-36). Missy didn't really pay close attention to what she really looked liked. It didn't matter how women appeared in those days as how it does today. They seem to think that it's evil to look at oneself in the mirror, and that it's forbidden for a woman to look at her own image. Life had taught her to think of herself as a very homely person, yet something in her refused to believe that entirely, would not be convinced by any amount of logical evidence. So each night she would wonder what she looked like(Pg.36). She knew what she really looked like, but her conscious was telling her different. It was like she had something in her that was really setting her apart from her family and friends. Even in her mid-twenties she was still treated unfairly. Her mother looked down at her and did not appreciate any of the things that she did. Any pip-dreams Drusilla might have harboured about Missy's growing up to snatch the ladies of Missalonghi out of penury via a spectacular marriage died before Missy turned then; she was always homely and unprepossessing(Pg. 39). What her mother pictured Missy to be had been vanished when Missy was about ten. Her mother lost fate in her before she even had a chance to prove her decency. Missy also was living in her own fantasy world. Her mother was against her from reading romance books because it was a sin to know about love. She was shatter inside for she felt she will never experience love, thus this made her even more interested in romance and love. She also grew up into a family where love was evil and bad. She also never felt that intimate passion that she always wanted to feel. Her mother may have made her believe in other things that was n't true, but she wasn't going to abide by it. Missy felt that she was in-slaved by her mother and her aunts. Her mother made her do all the chores even when she was so sick that she couldn't move out of bed. When she got so sick and fainted, her mother and aunt were worrying about who was going to do the chores. She was like Cinderella who was left behind to clean and do everything. Even when she left the house to go get something, she always thought about milking the cows and that she had to hurry back before her mother would get mad at her. She had such a big responsibility that she didn't have any time for anyone, not even for her self to enjoy. Oh let it not be brown! Prayed Missy. I want a scarlet dress! A lace dress in the sort of red that makes your eyes swim when you look t its that's what I want!brown, Drusilla finished at last, and sighed(Pg.51). She wanted a brown dress out of all the colors she had to pick from. She always felt that she matched brown best aside from other colors. The color brown which made her figure even more darken, is the color that she liked best. I understand how disappointing this must be, but the truth of the matter

Embedding Core Skills Essay Example | Topics and Well Written Essays - 1500 words

Embedding Core Skills - Essay Example According to Moser report (1998), one in five people were found to be functionally illiterate. The more recent Leitch report (2006) also discovered that a third of adults are not equipped with the basic school-leaving qualifications. Chances of functioning or success are undermined without this minimum core level. The two reports were funded by the government that was concerned that learners were not being equipped with the required level in core subjects like information and communication technology, mathematics and literacy. Embedding core skills in vocational subjects with emphasis on transferred skills that could be applied to workplace was considered. That’s why screening assessment like the BKSB are very important especially at the start of a course as a section of their opening assessment. It is very essential to know the level that your learners are operating at for their functional skills. Knowing where your students are, makes it possible for you to make out what they need to be taught. Having this knowledge will help in building towards where the students need to be. Embedding is the term mostly used to refer to the inclusion of these functional skills. Embedding, as defined in the Oxford English Dictionary (2012), refers to fixing an object deeply and firmly in a surrounding mass. Additionally it refers to implanting a feeling or an idea for it to become ingrained in a certain context. This indicates clearly that trainers and teachers have a responsibility of incorporating functional skills at any available chance. Beginning with planning, by writing lesson plans and schemes of learning which take into consideration core elements, showing details how ICT, numeracy and Literacy will be included to some degree in every lesson, helps in finding creative solutions. Therefore, it is the responsibility of teachers to find actively out chances of

Should fighting be banned from hockey Explain your reasoning Essay

Should fighting be banned from hockey Explain your reasoning - Essay Example Recently NHL has been banning fights, but as said earlier, the fights remain to be a main attraction in hockey games. While the NHL does not necessarily approve of the violence in the game, there are some unwritten rules in hockey and most of them have something to do with fighting. On the other side of the coin there are also written rules when playing hockey, and some of it are (McNaughton 1): 1) not being the third man in; 2) not leaving the bench to join the fight and 3) dropping of gloves and stick if someone intends to enter into an altercation. There are definitely penalties for getting into fights like being ejected or suspended; and all players must adhere to the rules or they are subjected to additional penalties which are generally known as misconducts. Another article claims that hockey fighting should not be banned in the game because hockey is a physical sport and things are expected to get rough now and again. But nobody likes to see a player get seriously hurt during or after a brawl (Ruth 1). Revising the rule calls for imposing correct restrictions that if a player gets out of line or intentionally hurts another player, then â€Å"he must be put in his proper place.† John Buccigross says he finds it hard to believe that hockey fans merely go to the games and watch it because of the expected fights, which if they do happen is usually short lived (1). He goes on to suggest that to avoid head and face injuries, hockey players should wear full facial protective gears. Buccigross also pointed out that enforcers within the games are needed to protect the star players who play in order to win the game. He likewise states that even if the NHL bans fighting in the games, there would still be fights due to the tensions and expectation of the players. Rick Sadowski of Rocky Mountain News similarly commented that there will always be fighting in hockey games even if the league officials impose sanctions like automatic