My Summer Vacation in Florida Essay - 1288 Words

Have you ever been on a vacation? To me a vacation is a time to be with friends or family. When I think of vacations, I think of packing, the flight or drive, and relaxation. Not only is it very exciting to go on a vacation, but you get closer to the people that go with you. Linda, my best friends mom had asked me if I would want to go with their family to Florida. When she asked me I thought she was kidding, but when she said, I need to know because if you are I need to get you a airplane ticket, I knew she was serious. I was so excited I could have kissed her. I was going to Florida with my best friend, Lisa, and her family. The people from Lisas family that were going were Tina, Randy, Ashley, and Linda. Tina is Lis?s sister,†¦show more content†¦Although the drive was three hours the time went fast before I knew it we were at the airport. I had never been on an airplane. My stomach felt like I had just eaten rotten fish and I was about to throw up. I was so excited to go, but at the same time I was scared because I had never been on a plane. We waited in the airport for at least an hour. Finally our flight was called, as I walked on the plane my heart was about to jump out of my skin. After the flight attendant had went through all the rules and we put our seat belts on the plane was going to take off. I thought the worst thing about the flight was taking off and landing. I didn?t like taking off and landing because my ears popped. Other than the fact that my ears popped taking off and landing the flight went smooth, we didn?t crash. When the plane landed, I couldn?t wait to stand on solid ground again. When I got off the plane the first thing I saw was a giant palm tree. It wasn?t like the palm trees you see in pictures. This palm tree was kind of ugly it was about thirty feet tall, the leaves at the top looked like they were dead, and it was leaning to the right. Other than that palm tree it was a beautiful day. It was ninety seven degrees, but it didn?t feel like Minnesota?s ninety seven degrees because there wasn?t much humidity. Before we could leave we had to wait forShow MoreRelatedFamily Memories : My Family Vacation994 Words   |  4 Pagesyesterday. Many of those memories that have special meaning to me were of family vacations when I was young growing up with my brothers and sisters. Family memories are important to many of us because they take us back to a time or place that was special. One particular family vacation I remember vividly, and it’s a story I have shared with my kids on many occasions. Over the 40 or more years since that memorable vacation, I still smile and think how lucky I was growing up with a mother and father thatRead Moremy favorite summer vacation getaways918 Words   |  4 Pages Have you ever been on a vacation outside of the United States? Vacations can be very enjoyable, fun, and memorable. 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My party of six, made up of my parents, two younger brothers and a close friend, packed up the cars; and I was still somehow excited to go home. I missed the little comforts and convenience of a real home, and my dog who I left in the care of my grandmother. But I would miss so much about the campsite I called home for some time. When I first arrived at Indian Creek Campground

Difficult Conversations Final Paper Conflict Resolutions

Final Paper Difficult Conversations By Wayne State University School of Social Work Social Work 6991 Professor Pauline Everette Fall 2012 Conflict is everywhere we go, at home, school, church in the community and especially at work. How we decide to handle the conflict at hand will determine whether we strengthen the relationship or break it up. Each situation can be dealt with in a way that can bring healing instead of animosity and further pain. Most of the time conflict is looked at as a negative experience that most people refuse to be a part of because of their own lack of conflict management skills; but if both parties are willing to sit down and discuss the issue, there is a possibility of a positive†¦show more content†¦B) John’s intentions were to convince me that all they were going to do is study and if I allowed it with some ground rules like leave the door open, only when parents are home and a time limit, he would have followed those rules only until I got comfortable with the idea and slacked up on looking in on them, then he would have tried to get intimate with the young lady, which eventually could lead to having sexual intercourse in my home. (Not going to happen) C) My contribution to the problem was as John grew up, I allowed my best friend’s daughter, (who was the same age and they grew up together), to visit/play with John in his room and even to date when she comes over she freely would walk to his bedroom and they would sit up and watch TV on his bed, sometimes with the door closed. I felt no harm in the situation because they would say they were cousins and treated each other as such. II. What happen? What is the other’s story? What happen was John threw that situation in my face, he said, â€Å"Mom what difference does it make, Kim, (name change for confidentiality), comes over lays in the bed with me to watch TV and sometimes when you and her mom go out, she spends the night and me and her are only friends.† John’ story was â€Å"Kim isn’t my only female friend, you don’t trust me.† A) The impact for me was tough for me to swallow; I was lost for words because he was correct. 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Heat Exchanger and Design of Thermal Systems Heat Exchanger Design

Question: Discuss about the Report for Heat Exchanger and Design of Thermal Systems of Heat Exchanger Design. Answer: Introduction The report is about the design of a condenser for 100 cubic meter cool room at 3 Degrees Celsius and R134a. A condenser is a kind of heat exchanger in which vapors are changed into liquid state by removing the latent heat with the aid of a coolant like water. There are two main types of condensers namely the type where the coolant and condensing vapor come into direct contact and the type where the coolant and condensate stream are differentiated by a solid surface, specifically a tube wall. Problem Statement The is need to attain a proper design of a condenser as a form of heat exchange with a fliud that optimizes the heat generated and provides the best result. The rationale for choosing the R134a revolves around its various advantages over other possible selections. Such advantages include the idea that it uses low price of the fluid (Caputo, Pelagagge, Salini, 2008). In addition, R134a employs the technology that is already generally studied and entrenched, and with verified formulas for condensation experiments (Tarrad Altameemi, 2015). Further, the R134a condenser is efficient because it utilizes the economic turbines for the expansion that is already available in the market. Moreover, the fluid used by the R134a condenser does not have the uppermost efficiency measures, both for the heat exchange and the generation of energy (Laskowski, 2012). Operating conditions and parameters based on worst scenario Design of Shell and Tube Heat Exchangers Several methods can be used in this design such as: i. Kern method This method does not cater for the bypass and leakage streams It is simple to apply and precise enough for preliminary design computations It is usually restricted to a fixed baffle cut of about 25 percent ii. Bell-Delaware method This is the most widely used method that considers the leakage through the openings between tubes and baffles and the baffles and shell and bypassing of flow of the fluid around the gap between tube bundle and the shell. iii. Stream Analysis method This is a more rigorous and generic method that is appropriate for computer estimations and forms the basis for most of the commercial computer codes. Construction Details i. The Tube Dimensions The Tube diameters in the range 16 mm and 50 mm Smaller diameters of up to 2.54 cm are preferred since this produces a compact and affordable heat exchanger The larger tubes are used mainly for heavily fouling fluids The suitable steel tubes are BS 3606 although other tubes can be used such as the BS 3274 The Preferred tube lengths range between 6 ft and 24 ft The optimum tube length to shell diameter ratio is approximately between 5 and 10 An estimated value of 19 mm is the suitable tube diameter for the worst scenario cases ii. The Tube Arrangements The tubes normally arranged in equilateral triangular, rotated square patterns or square The Tube pitch, Pt, is computed as OD multiplied by 1.25 iii. The Shells The Shell will be put at a close fit to the tube bundle to minimize bypassing The Shell-bundle clearance will be based on the type of heat exchanger (R134a) iv. Shell-Bundle Clearance The chosen Bundle diameter depends on not only number of tubes but also the number of tube passes The other parameters for the design include Nt = the number of tubes Db = the bundle diameter D0 = tube outside diameter Moreover, n1 and K1 are constants v. The Baffles The single segmental baffle will be used for the purpose of Directing the fluid stream across the tubes (Bhatnagar Bartaria, 2012) Increasing the fluid velocity Improving the rate of transfer The optimal baffle cut for the design is 45% Literature Review All air conditioners have four fundamental constituents and these include an expansion valve, a pump, an evaporator, and a condenser. In addition, they operate using a working fluid as a prinary medium and another opposing fluid medium. It implies that two air conditioners may seem completely different in configuration, size, shape but they would operate in essentially in a similar manner (Bhatnagar Bartaria, 2012). This is due to the broad range of applications and energy sources existing. Most air conditioners obtain their power from a combination of an electrically-driven motor and pump to circulate or pump the refrigerant fluid. A number of natural chillers that are gas-driven couple the pump with a gas engine to produce considerably additional torque. It is also worth mentioning that as the refrigerant or working fluid circulates through theair conditioning systemat significantly evelated pressure through the pump, it jets into an evaporator whereby it transforms to achieve a gaseous state. In the process, the working fluid takes away heat from the opposing fluid medium and operates in the same way as the heat exchanger (Bell, 2004). The working refrigenrant subdesuently enters into to the condenser, where it releases heat to the ambient by condensing back into a liquid state (Laskowski Lewandowski, 2015). The working fluid attains its former low pressure state after passing through an expansion valve. When the cooling medium that can be a fluid or air passes close to the evaporator, substantive quantity of heat is drawn to the evaporator. As a result, the process efficiently cools the opposing medium thereby aiding in the localized cooling within the building (Capata Zangrillo, 2014). The olden times air conditioners used freon as their working refrigenrant, but due to the harmful effects freon poses to the environment, it is no longer widely used. The contemporary designs have met stern challenges to develop the efficiency of a unit, while utilizing a substandard substitute for the freon as a refrigerant (Walawade, Barve, Kulkarni, 2012). Design Drawing The drawing of the design of the condenser is as shown below. The parts of the design are as shown below The geometry of the baffle is as shown in the drawing below Materials List Part Use Plastic used to reduce weight and cost Copper or aluminum tubing provides better-quality thermal properties and a positive impact on the efficiency of the system Paint or powder coating to protect sheet metal Water as a working fluid Is the fluid that circulates through the air-conditioning setup References Bell, K. (2004). Heat Exchanger Design for the Process Industries.J. Heat Transfer,126(6), 877. https://dx.doi.org/10.1115/1.1833366 Bhatnagar, P., Bartaria, V. N. (2012). Numerical Analysis of a Surface Condenser Design.International Journal of Innovative Research and Development ISSN 2278 0211,1(5), 223-231. Bhatnagar, P., Bartaria, V. N. (2012). Surface Condenser Design-A Review. International Journal of Innovative Research and Development ISSN 22780211,1(5), 438-449. Capata, R. Zangrillo, E. (2014). Preliminary Design of Compact Condenser in an Organic Rankine Cycle System for the Low Grade Waste Heat Recovery.Energies,7(12), 8008-8035. https://dx.doi.org/10.3390/en7128008 Caputo, A., Pelagagge, P., Salini, P. (2008). Heat exchanger design based on economic optimisation.Applied Thermal Engineering,28(10), 1151-1159. https://dx.doi.org/10.1016/j.applthermaleng.2007.08.010 Laskowski, R. M. (2012). A mathematical model of a steam condenser in off-design operation. J.Power Technol,92(2), 101-108. Laskowski, R., Lewandowski, J. (2015). Simplified correlation for steam condenser effectiveness under off-design conditions as a function of inlet parameters.Journal of Power Technologies. Tarrad, H., Ali Farhan Altameemi, A. (2015). Experimental and Numerical Model for Thermal Design of Air Cooled Condenser.Global Journal of Research In Engineering,15(3). Walawade, S. C., Barve, B. R., Kulkarni, P. R. (2012). Design and Development of Waste Heat Recovery System for Domestic Refrigerator.IOSR Journal of Mechanical and Civil Engineering, 28-32.

On Neanderthals Debunking Traditional Creationist Views free essay sample

This paper presents information to support the theory of evolution. The author attempts to debunk creationism as a theory through an examination of bone structure of the Neanderthal. The paper offers a basic scientific look at evolution. In the twentieth century one of the most heated and perhaps futile debates is whether man was created in a single moment by a supreme deity or if man is simply a highly evolved specimen of billions of years of evolution. In the last one hundred years, scientific evidence of hominid evolution has amassed as scientists have begun to excavate more sites containing mesmerizing archeological findings. Bones of such infamous hominids like Lucy, the Peking Man, and Neanderthals have increased understanding and awareness of our hominid ancestors, which have only fueled the fire for debate among Creationists and Evolutionists. While many sound arguments concerning these findings have been raised, many more invalid claims have emerged which lack the validity and scientific evidence but have nevertheless become a staple in Creationist reasoning. We will write a custom essay sample on On Neanderthals : Debunking Traditional Creationist Views or any similar topic specifically for you Do Not WasteYour Time HIRE WRITER Only 13.90 / page

Yemen Developing A Country Essays - Republics, Western Asia, Yemen

Yemen: Developing A Country Yemen: A Focus on Development for the Oil and Tourism Industries Yemen, a third world country desperately trying to achieve 2nd or even 1st world status, is in the midst of turmoil and tribulation in trying to bail out their economy and increase their level of reform. Since 1995, the Yemeni government began to implement a large scale program of reform. The program was formulated in cooperation with the IMF and the World Bank and it is considered a liberal program aimed at making the market the dominant regulator of the economy (6. Mallakh, 241.) Unfortunately, the outcome of this reform is not encouraging even though 1995 and 1996 were nominally successful years for the program. Yemen's economy continues to operate under the auspices of the International Monetary Fund (IMF) and the World Bank, with the government moving forward with the economic-reform package that was initiated in 1995 (6. Mallakh, 241.) In the conclusion of my first case study, I found that in order for Yemen to successfully reform economically, there was a definite need for for eign investment. Whereas this may prove to be true for a minute part of the economy, it fails to recognize the most blatant of truths: the Yemeni economy cannot survive without the counterbalance on the oil industry concerning the imports and exports. I. Yemeni oil production, Exploration and Foreign Investment 1. Oil Production Yemen's current oil output of about 350,000 bbl/d provides the country's main source of income. After a slight decline from 1995 to 1996, oil production is back on the increase. In 1996, output fell 5,000 bbl/d to 340,000 bbl/d, rebounding to 385,000 bbl/d in 1997. Yemen contains proven oil reserves of 4 billion barrels. Proven recoverable reserves of 1.7 billion barrels are concentrated in five areas: Marib-Jawf Block 18 (490 million barrels), Masila Block 14 (550 million barrels) in the south, the Jannab Block 5 (345 million barrels), and Iyad Block 4 (135 million barrels) in central Yemen. The Masila block is the country's most productive oil field at 200,000 bbl/d followed by Marib-Jawf at 140,000 bbl/d (4. USEIA) 2. Exploration and Bringing in Foreign Investment A. Exploration Exploration for additional reserves and new investments from foreign companies began to decline in 1994, due mainly to civil war between north and south Yemen, unattractive exploration and production contractual conditions, and the low success rate of hydrocarbon discoveries. However, exploration activity picked up again in 1997 after the civil war ended and the government started to offer more attractive contract terms. By mid 1997, approximately 20 exploration agreements were in force with foreign oil companies (4. USEIA) (5. E.I.U. p. 37-40.) B. Foreign Investment Projects In September 1997, Canada's TransGlobe Energy signed a MOU with Yemen's ministry of oil and mineral resources followed by a production sharing agreement (PSA) in December 1997 for the Dameis Block S1. Under the terms of the PSA, Transglobe will conduct a 3D seismic survey covering 60 square miles and drill three wells. This first exploration phase will take 22 years at a total cost of US$11 million. A second 22-year phase requires an additional 40 square miles of 3d seismic data and drilling three more wells. This second phase will cost another US$11 million. Block S1 was previously explored by Royal Dutch/Shell between 1990 and 1993. Meanwhile, another Canadian company, First Calgary Petroleum, signed a US$15 million deal for oil exploration in Yemen's southern province of Hadramaut. Two phases of exploration activities are expected, which will include drilling two wells as well as conducting 3D seismic surveys (2. Yemen Observer) 3. IMF Reform Package: Is it the answer? A.What is the IMF Reform package? The IMF program includes banking reform, privatization of state-run industries, major infrastructure investment, and reduction or elimination of government subsidies. Thus far, the economic situation has been improving in what is one of the world's poorest countries (3.IMF: Policy) B. Problems One of the main provisions in the IMF reform package calls for the government to reduce subsidies. The first two phases of reforms reduced subsidies on oil and electricity. Transportation fuel prices were doubled in March 1995, sparking violent protests especially in Aden. Prices for fuel, electricity, and water were increased again in January 1996; diesel prices increased between 40% and 60%.

Osmosis Lab Report Essays

Osmosis Lab Report Essays Osmosis Lab Report Paper Osmosis Lab Report Paper I then compared the three volume measurements and provided observation. The ext experiment was to determine the effects of salt concentration on bacterial growth. The tubes of broth were labeled as directed and antiseptically inoculated with the appropriate organism, and incubated for 24-rash. After incubation I observed the tubes for the presence or absence of growth. Methods 1. Start with a graduated beaker, or some other container marked at known volume levels. Fill the beaker or measuring cup to 200 ml with water. . Set that measuring device aside for later. 3. Then get a cup and place the raw egg in the cup and fill it with vinegar until the egg is covered. Let sit in vinegar for 24 hrs. . After soaking for 24 hrs remove the egg and rinse with water to remove any remainder of the egg shell. 5. Place egg in the designated cup with water and measure volume. 6. Record the starting volume of the egg (final volume)-(starting volume)=egg volume. 7. Then place t he egg in another cup and fill it with corn syrup until egg is covered. Let sit for 24 hrs. 8. After soaking for 24 hrs remove the egg and rinse with water. 9. Place egg in the designated cup with water in it and measure volume and record volume. 10. Then place the egg in another cup and fill with water until egg is covered. Let it for 24 hrs. 11. After soaking remove the egg and place in the designated cup with water and measure and record volume 12. Compare the three volume measurements. Results The vinegar resolved the shell of the egg and some of the vinegar when into the egg by osmosis. The egg was bigger and really slimy and had no shell. Egg volume results: (IF) 200 (SF) 185 = 15 The egg has shrunk in the corn syrup, it looked like it was deflated and you could see the yolk. Egg volume results: (IF) 237-(SF) 200= 37 The egg got much bigger when placed into the water, the membrane went from very loose to really tight. It looked like it was back to the size it was before it was placed in the corn syrup. Egg volume results: (IF) 112-(SF) 200= 88 Interpretation The vinegar was a hypotonic solution and the egg was hypersonic solution. Lack of water will lead to a plant wilting and possibly dying. When a cell is in a hypotonic solution (more solute concentration than the cell), eater will move from the hypersonic solution (less concentrated) to the hypotonic solution via the process of osmosis. In this experiment, the movement of water in and out of potato cells left in sodium chloride solution will be investigated. The sodium chloride molecule is too large to be passively transported across the cell membrane, so only net movement of water will happen without any input of energy.

LED-Based Stage Light Capable of Control via DMX512 Dissertation

LED-Based Stage Light Capable of Control via DMX512 - Dissertation Example DMX is an acronym of "Digital Multiplexing†. The DMX founded lighting control is premeditated to create, organize and dispense information to DMX-well-suited lighting fixtures. DMX512 is a regular reference for digital communication arrangements that are usually utilized to direct stage illumination and special effects. It was initially proposed as a standardized plot for scheming light dimmers, which, earlier to DMX512, had used assorted unsuited, proprietary procedures. Conversely, it later became the chief technique for connecting not only controllers and dimmers, but also supplementary sophisticated fixtures and special effects strategies for example fog machines and automated lights and has also extended to implications in non-theatrical architectural illumination; DMX512 has been utilized starting from the beauty of Christmas lightening to billboards which are electronically operated through LEDs. Microcontrollers are utilized in routinely manipulated products and applian ces, for example vehicle engine management systems, operational medical appliances, distant controls, office equipment etc. By minimizing the dimension and expenditure evaluated against a design that utilized a detached memory chip, memory, and input/output accessories, microcontrollers formulate it reasonable to electronically organize extra appliances and processes. In this project, the intended objective is to design a system of illuminating stage LEDs controlled by DMX 512. The same protocols as defined by DMX 51 are employed in this project. TABLE OF CONTENTS Number Topic Pages 1 Introduction 1 2 Project Aim 2 3 Project Approach 2-3 4 Operating Components 4 i. Serial UART 4-5 ii. USART Registers 5-11 iii. HyperTerminal 11-12 iv. USB-RS485 Board 13-16 v. RS485-ATMEGA8 Board 17-19 vi. LEDs 19-21 5 Software Implementation 22-23 6 Conclusion 24 Bibliography 25 1. Introduction DMX in general is a mechanism of scheming "smart" lighting fixtures and dimmers. Technically, DMX is a furt her contraction for DMX512-A, updated by Entertainment Services Technology Association abbreviated as the ESTA. DMX512-A is the Standard for controlling illumination equipment and connected appliances.1 In current years, the DMX customary is being utilized more commonly in Architectural illumination projects, as well as lightening of building outer walls, inflection lighting, wide-ranging usage building organization and housing lighting. This is appropriate chiefly to the elevated fame of LED founded on lighting fixtures, which are commonly manipulated through DMX electronic pointers. An extensive diversity of illumination control consoles, manipulators and additional appliances that produce DMX signals can be utilized to attach to an even better diversity of illumination fixtures and appliances that can be manipulated by DMX. DMX manipulated lighting schemes are utilized in many specialized events, for example concert illumination, stage automated lighting, studio lights, and theme park illumination etc. In this project, three colors i.e. RGB-Red, Green, and Blue LEDs are utilized where each region is applicable to all three colors. The DMX manipulator regulates the strength i.e. in intensity of each of these colors so that any required color can be formed. One or more LED drivers are concentrated on to exclusive DMX channel, and those drivers, against the DMX channel instructs, put the intensity value of the LEDs they control. 2. Project Aim The project aims to devise a stage-style light which utilized LEDs as the light resource and is alterable by means of the standard DMX512 protocol, and is competent of producing a variety of output colors. The major endeavor of this project is to organize the color of LED radiance through a DMX controller. The DMX controller discussed in this project is entirely automated through a computer. A simple logic of a program is also founded during the project. 3. Project Approach DMX is separated into four sectors or zones in which every sector comprises of