Why I feel Grateful to Duncan Abdelnour Essay Example | Topics and Well Written Essays - 1000 words - 2

Why I feel Grateful to Duncan Abdelnour - Essay Example For the sake of brevity, I would like to call this a personal epiphany of sorts. I had this experience about two months ago and it involved a news report that talked about the coolest tech startups in the US. Certainly, I know about Silicon Valley or Facebook or how Instagram fetched a whooping $1-billion price tag when it was acquired. The tech world for me is "that far" - something that is within the realm of the probable but not exactly a game changing sphere where I see myself being part of or being successful participating in. Its realness is further diminished by the difference in the field I have chosen for myself, my interests and my skill-sets. What caught my attention was the portmanteau that is seemingly the preferred choice in naming most tech startups nowadays. It was Beatmerch. It was so interesting for me because the name tagged to it is someone I know or, at least, someone I am familiar with: Duncan Abdelnour. This person would probably not remember me from Adam. But he was indelibly etched on my mind. The perfectly coiffed and neat hair and that bushy eyebrows in the news photograph are unmistakably the same as sported by the person who sat before me at a conference I half-heartedly attended for an academic assignment last June. I knew him because we were handed these name tags and that was the only other memory Ive had of that event because he unknowingly dropped it in my latte. He did not apologize because he apparently did not know of it. I was annoyed nonetheless. Here is the thing: Reading about Duncan Abdelnour and Beatmerch sort of woke me up and inspired me at the same time. He is still currently in college, majoring in Marketing and Entrepreneurship in the University of Tampa but he already has this cool startup business, which made $126,000 in less than a year.

Urban Education Essay Example | Topics and Well Written Essays - 500 words - 2

Urban Education - Essay Example Teachers are central to the excellence of students. There are no poor students, there are bad teachers. A good teacher is able to see the potential of every student and help develop that potential. A good teacher considers intellectual, physical, emotional, social and spiritual dimensions of students’ human experience, enhancing students’ social interactions and belief in democracy and other ideas of the US. A good teacher is always a leader. Such a professional becomes a caring mother (or father) for his students, creating comfortable and favorable conditions for the development of each of them. He effectively communicates with parents and community and inspires colleagues to be flexible, to recognize talents and hidden resources of their students and adopt an individual approach. A teacher should be a leader able to encourage others to be creative. Such a leader can organize a thoughtful change process in his school, facing everybody’s needs and aims. A teacher who is a leader educates through all his life, influencing his students, colleagues, parents, and community. As we can see the reforms are to take place not in the sphere of urban education, but in the minds of educators themselves. Then one sees wonders of urban education when students from the poorest districts show results much better than those from prestigious schools when students become valuable citizens and realized personalities. There has always been needed in teachers–leaders, able to inspire and educate others. The fact is that that the profession has always been undervalued. Teachers are underpaid. They are not listened to even in cases when decisions directly concern their needs and work.  

The Aim and Importance of Literacy and Numeracy Essay Example for Free

The Aim and Importance of Literacy and Numeracy Essay Literacy and numeracy are an extremely important part of everyday life and the 2 key subjects taught in school; Literacy is the basis of communication, Speaking Listen, along with Reading and Writing. We speak to and listen to people all the time and we contact people we can’t speak to by letter or email. Then numeracy is in the very least the centre of problem solving; money handling; weighing and measuring along with handling data which we all do on a near daily basis, with activities such as: cooking, shopping and keeping check on our bills and bank account . It is important that every child develops these skills as early on as possible so the foundations are there to build on as they get older. For the majority of children this should begin at home with family members talking as much as possible with them to encourage their speech and crayons to scribble and gradually inspire them to write their name etc. Parents can count things with them and sing counting songs to promote understanding of numbers and by the time a child starts school/pre-school they should be read to daily. The aim is to make sure every student can effectively access literacy and numeracy from a young age as it will later be important across the curriculum. Regardless of their ability work should be tailored to meet their specific needs. It is also to promote numeracy and literacy skills in their everyday situations by introducing activities and events which are suitable to their requirements and cover the planned outcomes. All young people need to develop these abilities in order to progress in their learning and education as well as developing their life and social skills ready for  most students to successfully gain employment and or to lead independent lives. Numeracy is applied across the curriculum in several ways: In science and cooking, with the use of weights and measures, timing, problem solving and calculations, science also covers data handling and predictions along with the use of graphs. It is also promoted in activities such as shopping and using a cafe where students have to recognise money; calculate amounts; work out which coins they need and how much change should be given. It is introduce in practical activities  such as wood work where students plan and design something they will make, they measure wood, count screws and possibly use problem solving during the activity if it doesn’t go to plan. Students may be encouraged to grow plants, so they can measure and record growth along with plotting the recordings and showing this in a graph. They are encouraged to analyse the data and explain their findings. Other examples of numeracy across the curriculum are geography, history and PE. Geography may be using graphs to see such things as rainfall through out a year or in different places, so  reading and understanding data is required, and history may use numeracy by putting events in chronological date order and knowing which occurred fist etc. PE uses measurement in high jump, long jump, discuss, javelin and any other activity where distance or height need recording. Numeracy skills involving money management, addition, subtraction, weights, area, space and measure will be implemented in daily life when shopping, paying bills, checking wages and bank account transactions, along with planning meals, cooking, decorating, ordering curtains, gardening and most DIY projects. Literacy is more easily promoted across the curriculum as all lessons and activities involve speaking and listening which is generally the main form of communication, and most will involve reading and writing. The majority of mainstream subjects implicate reading a text book, so good reading skills are essential. Many instructions for work to be completed are given orally and listening skills are required. Students need to be able to ask or answer questions verbally; higher order questioning may be used to ascertain knowledge and understanding and to provoke more  independent thinking, so speaking and listening abilities are used here. Good reading skills also help students with their spellings when writing which helps with presentation in every subject. Strong and confident reading and writing skills will enhance the student’s interpretation of exam papers and lead to better qualifications being gained at the end of their education. Our young people are encouraged to take part in verbal dialogue as much as possible, often prompted by questioning which should be aimed at the student’s level; this promotes their listening  skills as well as their speaking. Some students use PECs to communicate to other, but these students are still verbally and gesturally prompted to speak. Students are encouraged to ask for things they need, rather than it just being given to them, which is done to promote their communication capabilities. Literacy skills involving Speaking, listening, reading and writing will be implemented in everyday life when communicating, whether in a verbal conversation or via a social networking site, or in correspondences such as a letter or email. In conclusion, numeracy and literacy are the basis to everyday life, so strong foundations need to be established as early as possible to ensure a strong structure to build up on, in order to develop the essential skills for a successful education and more importantly for the life skills we all require to maintain a good standard of independent living as adults. Every effort should be made to ensure all students develop the capability to communicate to the best of their ability as soon as possible, as this is crucial to the continued development of their learning, independence and their  social skills, as well as an effective life after school. The delivery of literacy and numeracy should enhance student’s confidence and individuality along with their personal and social skills. All outcomes, achievements and progress should be clearly recorded with indicators of the next step to be delivered to the young person. With the use of a personal learning plan work should be resourced to meet the level and needs of a student. Numeracy and literacy can be introduced in each subject or task at the appropriate level and often implemented in a practical manor if necessary.

Hydrostatic Pressure Vessel

Hydrostatic Pressure Vessel Nomenclature = radial stress = Hoop stress = axial stress Pi = internal pressure Po = external pressure ri = internal radius ro = external radius r = radius at point of interest (usually ri or ro) Delta L = Elongation = Deformation ID = inner dimeter of o-ring Gd = groove diameter Srec = stretch recommended Bd = Bore diameter GW = Groove width CS = cross section diameter C = recommended maximum compression (static)   Summary    A design of a thick vessel is created to measure the effects of hydrostatic pressure when operated in them. The methodology of calculating the stresses on thick walled cylinders is illustrated. A study of the radial and hoop stresses is progressed to find the required sizes of the vessel to operate without a failure under 30 MPa pressure. The bolts are designed to handle the load on the vessel to keep the vessel in one place without moving. The force in the vessel is measured to find the correct bolts that will keep the vessel fixed and safe. A sealing technology study is described to understand how to measure the correct dimension of the o-ring to process the test without air leakage from the entry of vessel. The groove in the vessel was measured to stretch the o-ring designed in a correct manner so the pressure hand move in and out sealed. The calculations in this report are tested mathematically in an academic manner for the design to be brought to life with high efficiency. Introduction In the field of science experimenting, it is necessary to test the efficiency of a specific design, because all products of same function have different specifications and differ in quality. At the same time the true specification of a design can alter its efficiency. Therefore, the best product must be created with real specific measurements that lead to its perfection. It is found that there are three important features of the pressure vessel. Firstly, the shape of the vessel which presents the equations used to study the impact of pressure in them. Secondly, the material used must be chosen correctly to prevent any danger if vessel fails. Finally, the safety is the most important feature in a pressure vessel hence it is important to choose the correct bolts that will keep the vessel fixed at a point. In addition to designing the desired sealing technology of the vessel to keep the air pressure tight in the vessel without any leakage. Companies, industries and labs usually use hydrostatic pressure on a specimen to figure out it properties which allow us to understand the standards of the material. Using hydrostatic pressure is a safe and effective process which helps us to understand more about failure of objects under pressure and the effect of hydrostatic pressure. There are a few different techniques used to measure the failure of a test, for ex ample, when a hydrostatic test is proceeding it is known that if air starts leaking from the vessel, this would be considered as a failed test. Thick walled cylinders nature is that they handle more pressure. Under high pressure, the wall might explode and cause failure thus is it important to dimension right size for the thickness of the cylinder before manufacturing the cylinder for hydrostatic testing. Measuring variables such as, hoop, radial, and axial stresses will be discussed and progressed for the vessel designed in this report. The bolts used are entitled to a high load of pressure which is possible to cause a failure if there was no study taken before using these specific bolts that have this mechanical specification. A study on the strength of the bolt is being used and will be illustrated later in the report. Basically, this report will show a study on how to design the required cylinder and bolts to process a safe hydrostatic test. As the design of the vessel will be illustrated to understand the image of the design and its dimensions. Which will lead to an understanding on how to design a specified thick cylin der to process an internal pressure and a hydraulic press to test a specimen hydrostatically. Aim of the Project The project aim to design a device to measure the effects of hydrostatic pressure on the fracture toughness of the device. It is found that the device required must handle conditions of 30 MPa pressure thus thick walled cylinder is needed. The importunacy of this project is to create a design that meets the required conditions for it to function plus applying correct methods and calculations for it to function. Hydrostatic pressure Hydrostatic pressure test is latest style of testing the ability of fracture toughness of a vessel without causing harm. Hydrostatic test of vessels requires gas or water filled into the vessel if the fracture toughness of vessel is about to crack, the resistance of air reduces the explosion as they resist the inner pressure that causes the failure. Less energy is released when fracture is about to take place LT (2016). Air is a fair medium that is used for a hydrostatic test. Air is less expensive than oil and it has an easier method than water for a test. The sample will not get harmed after the test. When a failure occurs, it means that the vessel does not meet the standard and this failure can be shown when the durability fails and air begins to leak. It is important to assure the leak prevention, reliability, and safety of the pressure test. There are two methods of testing hydrostatic and pneumatic. Air is used as a medium of the hydrostatic test Arshad Mahmud (2012). The hydrostatic test measures the elastic deformation of a metal and its ability to get back to it is formal shape. Air is a safe medium as it is can compressed like water. When a cylinder blows out, air will leak which is safer than using other material due its possibility to be highly explosive. Pressure vessel Pressure Vessel is a tank that is designed to contain gases or liquids at different pressure limits. The pressure or temperature drops can be dangerous; this can cause an explosion which can injure anyone near the vessel. Thus, when designing a pressure vessel legal commands must be taken to create a vessel that is safe to perform its task. History of pressure vessels started in 1495 when Leonardo Da Vinci designed a vessel. The major problems that occurred were mainly explosions because of leakage of compressed gas or liquid, and if a fire was burning near. Engineers created safety factors as measurements of safety of pressure vessels LT (2016). Pressure vessels are used in many applications, for example, in compressed air receivers, hot water storage tank, compression chambers, mining operations and nuclear reactor vessels. A cylinder is the usual shape that is used for hydrostatic testing. It has good maintenance because it is checked every five years for public safety. When the device gets cold when in storage, fatigue might occur hence the importance of the maintenances. However, hard steel responds to it properties to handle in high pressures. Steel also provides controlled and safe environment to prevent any explosion that is possible to harm people. Shape of the vessel Cylinders have an ideal shape because it is easy to analyze when in operation and are easily made. This makes cylindrical vessels the cheapest in cost and most effective. Even though the cylinder is the ideal shape for the vessel, it comes with a few disadvantages, for example, the bigger the diameter, the more expensive the construction of the cylinder would be. The ideal size for a cylindrical vessel is 8cm, this is to avoid inspections and testing issues RR (2012). In this case, the maximum internal pressure chosen is 30MPa which allow us to design a thick-walled cylinder. Equation, and variables of thick walled cylinder will be illustrated in this report, based on them a design of a vessel will be created for hydrostatic testing. Thick Walled Cylinders There are a lot of examples for thick cylinder such as, guns, hydrostatic testing device, and high pressure hydraulic pipes. Thick cylinders are entitled to internal and external pressure. The wall thickness is large and the stress across the thickness is notable. Stresses in this case are solved by using specific boundary conditions, compatibility, and equilibrium. The problem of thick walled cylinders is that they are entitled to high pressure and temperature which is possible at constant or changing duration. The usual problem is ductile fracture of the material which is because of the geometry or the properties of the material. The real analysis of a thick cylinder is dependent on the radial and hoop stress caused by the internal pressure which stand up to the yield strength of the material. Equilibrium equation is important because we need it to relate stresses to strains and strains to displacement d(sr) / dr + sr sh / r = 0. Compatibility equations; Thick walled cylinders have three main mechanical stresses. To design a thick, cylinder the thickness of the wall should be more than 1/10 of the greatest diameter of the cylinder: 1-Hoop Stress 2-Radial Stress 3-Axial Stress (2017) Thick walled cylinder The boundary conditions of a thick-walled cylinder are: Thin surface is, at and outer surface is, at Thus -pi = A (B / ri^2) and -po = A (B / ro^2) Variables can be seen in figure 1.1, Figure 1.1 shows location of the variables (2017) Thick walled cylinder A and B in the simultaneous equations above when applied to the boundary conditions above, two constant equations for A and B will be concluded; Now, to find the final general equation, Lames equation is included thus the hoop stress and radial stress will be; (2017) Thick walled cylinder the axial stress on the case of the cylinder designed bellow which a closed end is calculated by means of equilibrium which is reduced to as shown above. Maximum shear stress follow that stresses on the cylinder at any point on the wall are principal stresses. Thus, the maximum shear stress at any point will be given by the equation of Tresca theory, Giuseppe Catalanotti (2017) Material of the vessel Pressure vessel are mainly made from steel. Rolling or forging is used to make out the shape out of the vessel. Current standards use steel to impact resistance which increases the mechanical strength. Steel is the most important material for engineering and construction in the world. Steel has a great resistance to corrosion because of its formability and durability, high tensile and yield strength and is very effective for thermal conductivity. Stiffness, ductility and yield strength are measured using tensile stress test. Impact test used to figure out the toughness and hardness of surface resistance Total Material (2016). -Yield strength of steel is 260MPa -Young modulus is between 210 GPa (Stiffness better three times than aluminum) -density of 7.7/8.1(kg/dm3) -Poissons ratio 0.30 -Thermal conductivity 11.2/48.3(W/mK) -Thermal expansion 9/27(10-6/K) Total Material (2016). Safe tank to perform a hydrostatic test must remain sealed. Lip seal technology is used in this system. O-ring were created to prevent any leakage when hydraulic hand is inserted into the chamber. A hydrostatic test should meet these requirements of the vessel to remain testing of pressure safe. Calculations Results: First, the maximum pressure that will cause yield at the internal surface of the vessel will be calculated, using the hoop and radial stresses to find the maximum shear strength and the yield strength. The equations will be used are explained in thick-walled cylinder section which are the hoop and radial stresses. In addition to the maximum shear strength equation and yield equation which will be mentioned in the following; Giuseppe Catalanotti (2017) Secondly, the elongation equation will be used to determine the size of the deformation; Delta(L) = deformation(z) * L (L) is the height of the internal cut which has a height of 0.210m Deformation(z) v = passions ratio E = the young modulus k is the ratio of external diameter on the internal diameter ro/ri First the hoop and radial stresses must be calculated hence the hoop stress equation is pi = 30MParo = 0.210m k = 2.625ri = 0.08m hoop stress is = 145.67MPausing hoop stress equation above. pi = 30MParo = 0.210m k = 2.625ri = 0.08mk = ro / ri The radial stress is = -(108.75 MPa)but r = -piusing radial stress equation above. The yield equation is pi = 30*10^6 k = 2.625using the yield equation above. = 70.18 MPa Since the yield strength of the steel is 260Mpa and it is greater than the yield at 70.18MPa pressure then the measurements of the vessel appear to be able to handle an extra 190MPa on the system before it begins to fail. The maximum shear strength Tresca is      = Since hoop and radial stresses are found, maximum shear stress can be calculated. = 145.67MPa = 108.75MPa= 70.18MPa Giuseppe Catalanotti (2017) Now finding the Elongation which has the equation Delta(L) =* L = (1 2v) * pi / E (k^2 1) = (1 2 * 0.3) * 30*10^6 / 210*10^9 * (2.625^2 1) = 9.7*10^-6 v = passions ratio of steel pi = internal pressure E = the young modulus of steel k is the ratio of external diameter on the internal diameter ro/ri Deformation= 9.7 *10^-6m Since, Delta(L) = defamation(z) * L Then, L = Length of the cylinder which is = 0.21m. See figure (3). Elongation is 9.7 * ^-6 * 0.21 = 2.037 *10^-6m from Elongation equation above Giuseppe Catalanotti (2017) Bill of Materials (6) (4) (1) (3) (5) (2) Item Number Description quantity Material (1) Vessel 1 Steel (2) O-Ring 1 Rubber (3) M14 Bolts 6 Steel (4) M12 Bolts 4 Steel (5) Pressure hand 1 Steel (6) Holding Stick 1 Steel The Design and assembly procedure A hydrostatic pressure device was designed to measure the pressure. This tank is to be attached to the hydraulic machine. Measurement of the machine were taken to design the vessel. The purpose of this device in figure (1) is to ensure that pressure tests are maintained safely and properly. This design is measured to handle pressure between 0MPa to 70MPa. The test will be progressed at 30 MPa. The material used is steel. The design contains six different main parts as shown in figure (1). This section will provide dimension and function of each part. Figure (1) Vessel Components (Exploded View) The size and the thickness are very important factors when designing a safe vessel. Figure (2) shows the circular diameter of the head of the vessel which is 21cm and that it was extruded to 34cm. Figure (2) is also a cross sectional view of the final shape of the vessel.The thichness of the wall surrounding the chamber is 6.5cm and the bottom has a thickness of 7cm. Figure (3) shows the dimsion of the chamber which is a cylinder of 8cm diameter and length of 21cm. This area is where it is expected to place the specimen. The specimen size is measured to be 20*50*4mm Figure (2) Dimension (1)Figure (3)Chamber dimensions The mechanism that will hold the vessel is smart. Figure (4) shows a diameter of a cut of 5.1 cm and 6.5 high. This area is meant to be placed into the bottom holding hand of the hydraulic machine in the Ashby building. Where the vessel has an extrusion of 27cm and height of 5cm and was created as a base of vessel as shown in figure (5). Figure (4) Bottom hand holder Figure (5) shows the base diameter and height Figure (6) shows that the base cylinder has 6 holes of M14 size. These holes were created to be tighten up with bolts of M14 shown in figure (7) on the table of the hydraulic machine. Six bolts are created and can be seen in figure (6). Figure-(6) M14 holes x6 Specification of the Bolts (F = P x A),which means that the force is equal to the pressure multiplied by the area. Figure (3) shows the internal diameter of the vessel which is 0.08m. (a = pi x (d)^2 / 4) is used to calculate the area of a cylinder, which means that (pi x (0.08m)^2 / 4) = (50.03*10^-3 m^2). The maximum pressure will be tested is 30 MPa. Since pressure is 30MPa and area is (5.03*10^-3 mm^2). then as they multiplied to bring a force of 150 kN. This means that thetotal force in the cylinder is equal to 150 kN. The question here is that will the bolts in figure (7) and (8) M14, M12 handle 150 kN of force. The research on the metric bolts shows the ability of each size of the bolts. It was shown that M14 bolt has a load proof of 66.7 kN. Figure (6) shows that there are 6 bolts of M14 is used. Now, the total force applied is divided by the number of the bolts to show the required ability of the bolts. (150 kN / 6 = 25 kN) which means that the system requires six bolts that each of them can handle 25 kN of force Metric Bolts (2016). Above it is mentioned that the load proof of each of the M14 bolts is 66.7 kN which means that a total of six M14 bolts will provide an ability of 400 kN, 400 kN of force can handle 150 kN of applied force. In brief, the bolts used in the system in figure (11) meet the requirement of the study which is 30 MPa. To ensure the safety of fixing the vessel to the machine, four M12 bolts were added. M12 bolt figure (8) has a load proof of 48.9 kN, Total load proof of four bolts is equal to 195.6 kN which has a good impact on keeping the vessel safe from any danger of being rapidly moved away from it fixed point. Eventually, the total ability of the bolts is equal to 595.6 kN which are designed to prevent the vessel from any possible danger of a maximum pressure load of 150 kNMetric Bolts (2016). Figure (7) M14 Bolt x6 Figure (1) shows 4 holes created on top of the vessel. They are M12 holes created to increase stability of the vessel and more safety in case of the vessel left it place. Bolts of M12 were created to have a length of 39cm as shown figure (8). Calculations above are measurements of parts in figure (1) . Ten bolts, 4 of M12 and 6 of M14 are attached to the base of hydraulic machine. Finally, a hydrostatic test can be done safely.   Figure (8) Long M12 bolts x4 Sealing Technology O-ring is a mechanical gasket in a shape of loop with a diameter that is made of rubber. It is designed to be fitted at circler cut which means that an o-ring will be compressed during work. It is expected to seal a joint of two parts. One mechanical benefit of the o-rings is to seal a moving hand through a vessel without an air leakage. Thus, a specific design of an o-ring will be designed to be fitted at the entry gate of the vessel for the hand to enter the vessel without air leaking (efunda) 2017. Figure (5) shows the place of the o-ring. The thickness of the o-ring is calculated to be 0.84 mm and the inner diameter of the o-ring is measured to be 79.46 mm. The o-ring designed can be seen in figure (10). Figure (9) shows the grave and the dimension of the O-ring. An o-ring is meant to be attached in this system. The groove was measured to be 4 cm away from the top of the vessel in the chamber section. The groove diameter was calculated to be 8.1 cm and the width of the groove is 1.15 mm. As hydraulic hand enters the chamber, it will pass through three rubber bands that reduces the area of the chamber making it tighter for the hand to be inserted without any leakage outside the system PS (2016). The design of the grave and the o-ring must be studied before they are designed. To design a sealing technology there are a few variables to know to create it. These variables are the bore dimeter of the outside radius, the groove diameter of the inside radius and the groove width of the axial length. The maximum stretch of the 0-ring should not be more than 5% of the grove size (efunda) 2017. Calculations of the O-ring and Results ID is the inner diameterof the o-ring and can be found if Srec the recommended stretchischosen and the groove diameter Gd the groove diameter can also be found when this equation is used; Srec = 2% ID = Gd * (1 Srec) then, ID = Gd * (0.98). The stretch of the o-ring is to make the o-ringstay at the groove tightly without falling out (efunda). ID = (39.94 * 2) 0.42 = 79.46 mm ID = 79.46mm Gd = ID / 0.98 Gd = 79.46 / 0.98 = 81mm Gd = 81mm Cross sectional Diameter (CS) of the o-ring: O-ring will be compressed in radial direction when it is attached to the groove. As the cross section of the ring is compressed between groove and bore diameter then the cross-sectional diameter must be more the depth of the groove. Which means that CS > Gd ID / 2 (efunda) 2017. CS = Gd ID / 2 = 81mm- 79.46mm / 2 = 0.77mm As CS must be > than 0.77mm then CS = 1mm C is the recommended maximum compression is 40% and must be for the ring to be compressed. The recommendation of C depended on the seal kind. Static seals do not require an axial movement in the bore(efunda) 2017. Groove Width in the Vessel (GW) = When the ring is compressed horizontally it will expand vertically. The material of the ring will be helpful to be compressed effectively. However, the groove width should be about 1.5 by the cross sectional of the o-ring diameter and this to stretch the ring vertically (efunda) 2017. GW = CS * (1.5) = 1mm * 1.5mm = 1.5mm. Figure (9) Section Cut shows the position and size of the Groove width and diameter Figure (10) O-ring CS dimeter and radius (r) Figure (11) Final Product (Thick walled Vessel) Discussion Thick Walled cylinders handle high pressures with least effects on the vessel and remain safe for future use. The deformation possible in the vessel is calculated to find the amount of elongation (the change in formation or length in an object). The elongation value is 0.002mm which is proper. The maximum pressure in the vessel is 30MPa hence finding the hoop and radial stresses to find the shear stress of the vessel and compare it with the yield strength of the vessels material and it dimensions. Therefore, the stresses applied at different sections in the chamber are calculated above and hoop stress is found to be 145.67MPa and radial stress is 108.7MPa. The maximum shear stressin the vessel is calculated from the hoop and radialstresses and it is found to be 70.18 MPa. Based on Total Material (2016) the yield strength of steel is 260 MPa. Giuseppe Catalanotti (2017) have stated that if yield strength of material is bigger than the shear stress calculated in the vessel then the vessel is safe when pressure applied. The Bolts are designed to handle keep the vessel fixed on the ground of the hydraulic machine. The total force initiated in the vessel is calculated and found to be 150kN thus the required bolts are must have a higher force than 150kN. The six M14 bolts used can handle force of 400kN and this enough for the vessel to function safely. Finally, the sealing technology, the o- ­ring is designed to keep the vessel sealed when it is preforming. (efunda) 2017 stated that the maximum recommended stretch of an o- ­ring is 5% and the designed o- ­ring has a stretch of 2%. The groove width is 8.1cm, cal culated using 2% max. stretch and an inner diameter of 7.94cm. The CS diameter o- ­ring is 1mm, which must be higher than the calculatedCS diameter which is 0.77mm. Hence, the

The Self-destructive Relationship in Wuthering Heights Essay -- Wuther

On the face of it, it would seem that the relationship between Catherine and Heathcliff is self-destructive to an extreme. Due to the lovers’ precarious circumstances, passionate personalities and class divisions, it seems that fate transpires to keep them apart and therefore the hopelessness of their situation drives them to self destruction. However, although the relationship is undeniably self-destructive, there are elements within it that suggest the pain Heathcliff and Catherine put each other through is atoned for to an extent when they share their brief moments of harmony. Catherine is trapped between her love of Heathcliff and her love for Edgar, setting the two men down a path of destruction, a whirlwind of anger and resentment that Catherine gets caught in the middle of. Catherine is drawn to Heathcliff because of his fiery personality, their raw attraction and one certainly gets the sense that they are drawn together on a deeper level, that perhaps they are soulmates. C. Day Lewis thought so, when he declared that Heathcliff and Catherine "represent the essential isolation of the soul...two halves of a single soul–forever sundered and struggling to unite." This certainly seems to be backed up in the novel when Catherine exclaims â€Å"Nelly, I am Heathcliff! He's always, always in my mind--not as a pleasure, any more than I am always a pleasure to myself, but as my own being...† This shows clearly the struggle Catherine feels as she is drawn spiritually to Heathcliff, but also to Edgar for very different reasons. Edgar attracts Cath erine predominantly because he is of the right social class. Catherine finds him "handsome, and pleasant to be with," but her feelings for him seem petty when compared to the ones she harbours... ...ctive. Catherine is pushed to death and Heathcliff to brutal revenge, bordering on the psychotic. Yet before Cathy’s death, the knowledge that the other loves them is strong enough to make Wuthering Heights such a classic love story, and â€Å"that old man by the kitchen fire affirming he has seen two of 'em looking out of his chamber window, on every rainy night since his death,† shows that as they walk together on the moors, their self destruction may have led them to death, but also to what they most desired-being together. Works Cited - MLA Format Bronte, Emily. Wuthering Heights. London: Dover Publications, 1996. Chatterjee, Praving. Emily Bronte. September 28, 2013. Web 22 Apr. 2015. https://emilybronteparminder.wordpress.com/2013/09/28/brontes-contributions/ Wikipedia. Emily Bronte. Web 22 Apr. 2015. http://en.wikipedia.org/wiki/Emily_Bront%C3%AB

Wisdom of Parents in the Poem, Photograph of My Father In His Twenty-Second Year :: Photograph of My Father In His Twenty-Second Year

Wisdom of Parents in the Poem, Photograph of My Father In His Twenty-Second Year We have all grown up hearing our parent's advice "Do as I say, not as I do". When your parents give this advice you do not always listen at first, but later on in life you may catch yourself using it. I believe it is very important value, respect and listen to what your parent's say; their experience with life is their major tool in shaping their children into adults. Parents have lived life longer than their children that is a fact. And what they have gained is wisdom. Through out their lives they have learned from their personal experience and can use these experiences to try and guide their children in the right direction in a similar experience. In the poem "A Song In The Front Yard" (Gwendoly Brooks, Bridges 44) it gives us a picture of a child wanting to explore more of the world than her parents think she should. "I've stayed in the front yard all my life,"(Line 1) this line tells us that the child was a little sheltered. Not able to go out of the front yard the child was kept in away from the rest of the world. "I want a peek at the back" (Line 2) in this line the child wants to explore more than just the front yard, just to go into the back yard would be great. "To where the charity children play. I want a good time today. They do some wonderful things. They have some wonderful fun. (Lines 8-10) In these lines they show how the child sees the surroundings outside the fence. The child sees that the other children are doing fun things that the child wishes he or she could do. He or she sees the activities of the other children as wonderful. The other children are probably doing things that the child in the front yard doesn't get to do. "My mother sneers, but I say it's fine how they don't have to go in at quarter to nine. My mother, she tells me that Johnnie Ma will grow up to be a bad woman." (Lines 11-14) In these lines the poet depicts the mother's feelings of the other children. She doesn't think that they are the best crowd for her child to be influenced by or maybe the activities they are doing are quite appropriate.

Professional Ethics and Toxic Waste Essay

1.Discuss why Rachel has an ethical responsibility to take some action about her suspicion of the illegal dumping of toxic wastes. Rachel has an ethical responsibility to take some action about her suspicion of the illegal dumping of toxic wastes because it is illegal to begin with and even though it might only be a suspicion, if it turns out to be true, under the eyes of the law if she knew about it and did nothing, she is just as guilty as the responsible parties. She might be working for a very prominent firm but if her suspicions turn out to be true, the minute those news go public the firm’s reputation will definitely suffer as will the firms employees. No employee wants to have to suffer the consequences of a wrong doing by the upper management of any firm and even more if the actions taken by the upper management are strictly illegal and they are knowingly performing such actions. Having found such incriminating note directed to the plants general manager and doing nothing about it is like saying you are ok with the illegal activities that you think might be taking place. Rachel is the director of financial reporting, this will be a person of interest in case an investigation takes place and if the investigation finds that she knew what was going on and did nothing, it will put her in a very bad position regarding the law and future employment. Rachel definitely has an ethical responsibility to take actions in regards to her findings. 2.For each of the three alternative courses of action, explain whether the action is appropriate. †¢Seek the advice of her boss, the vice president of finance for Alberta: This would be an appropriate action to take. Even though she might not know if her boss is directly involved in the situation, going to him with the concern is proof enough that she cares about her company and doing the right thing. If her boss is not involved she might even be somehow recognized as an example employee for going forward with such information and doing the right thing. †¢Anonymously release the information to the local newspaper: Releasing the information to the news anonymously is always an option even though for her specific case I would not recommend it. She has no proof that her suspicions are in fact taking place and it would be very irresponsible on her part to say her company is doing something as illegal as improperly dumping toxic waste on purpose just to save some money. †¢Give the information to an outside member of Alberta’s board of directors, whom she knew because he lived in her neighborhood: Again, releasing such information to an outsider without knowing if it’s true or not, might be irresponsible on her part because from that point on it would only be one step for a company outsider to make the information public without knowing the facts. Since in this case the outsider is a member of the board of directors, she could contact that person if she feels comfortable with him in order to discuss her findings privately. That way she is also showing her commitment to doing the right thing for her company and shows her concern to do right by her as an employee. 3.Assume that Rachel sought the advice of the vice president of finance and discovered that he both knew about and approved of the dumping of toxic wastes. What steps should she take to resolve the conflict in this situation? If Rachel sought the advice of the vice president of finance and discovered that he both knew about and approved of the dumping of toxic wastes I’m sure she will have a conversation with her regarding what she just found. Rachel will have to see what he has to say about the toxic waste dumping and then make a decision regarding the confirmation of her findings. That decision might range from leaving the company and not reporting the incident, to staying as an employee and going directly to the appropriate agencies and reporting her findings. Whatever Rachel decides to do, she still has an ethical obligation to report her company’s illegal activities be it to her superiors or to an agency like for example the United States Environmental Protection Agency (USEPA).