Thursday, October 31, 2019
Public display of affection Essay Example | Topics and Well Written Essays - 250 words
Public display of affection - Essay Example Lenny would see his sea turtle friends, Liam and Levon, kissing and showing affection to the Lady Leatherbacks without a single thread of emotion or care for who was around. And the next day he would see these same friends displaying affection with new Lady Leatherbacks. Lenny wanted nothing to do with this. Lenny thought that affection was personal and wanted to meet someone who shared the same thoughts. He searched and searched for many years. He grew larger and larger. He waited and he waited but he never seemed to find that special Lady Leatherback. Instead he always seemed to find Liam and Levon up to the same old tricks. Oh, how Lenny longed to meet someone like him. As Lenny grew older he decided that perhaps he should give up and began to realize that maybe he really was one in a million. He thought the chances of him finding his dream turtle were also 1 in a million. He crawled up on the shore and came to terms with his new realization. Minutes passed and as Lenny lay content in the sun he realized he was not alone. Within turtle tails reach was a Lady Leatherback. Lenny started a slow turtle conversation that has now lasted over 30 years. At the point in his life where Lenny became content with himself he found his lady leatherback and she found him. Though, to this day, there hasnââ¬â¢t been another turtle to verify their affection Lenny is now a proud father to 8 turtle children, 23 turtle grandchildren, 45 turtle great grandchildren, and 100 turtle great great grandchildren. And Lenny and his Lady Leatherback are as happy as
Tuesday, October 29, 2019
Liverpool one shopping development Essay Example for Free
Liverpool one shopping development Essay Liverpoolââ¬â¢s CBD needed regeneration for a variety of reasons. During WW2, it was bombed heavily, due to it being a major port for resources from the USA. During the 1960s, it was rebuilt too quickly and then fell into disrepair before 2000, when the design and infrastructure was outdated. Many parts of the city, especially the CBD suffered from urban decline, with its population dropping by 50% and 45% of its industry also leaving. In addition, Liverpool faced competition for shopping by nearby Manchester and Chester, as well as out-of-town shopping centres like the Trafford Centre. Therefore, Liverpoolââ¬â¢s CBD needed regeneration to be more attractive to consumers, and regain its spot in the top 5 shopping destinations in the UK. Liverpool One, the project to rejuvenate Liverpoolââ¬â¢s CBD was completed in 2008. It was opened in phases on 29 May and 1 October 2008, with the final residential lots opening in early 2009. In the same year, Liverpool was named as the European Capital of Culture. Its total cost is approximately ? 1billion, with 42 acres of Liverpool city centre being redeveloped. It includes 3000 parking spaces, 169 stores or services, as well as a 5 acre park, and 500 new apartments. It also contains a 14-screen cinema and a 36-hole adventure golf centre. Shops present include Debenhams, John Lewis, Ted Baker, Waterstones, Starbucks, Topshop and Caffe Nero. These are all mainly comparison, high-order goods which are chain stores. The area is indoor, yet also mainly open-air. It is of a modern design, and is two storeys tall. There are many cafes and food areas, with many benches. There are also electronic maps and information panels across the centre. The pedestrian areas are wide and escalators are available to proceed to the higher floors. There have also been other improvements in the CBD, such as the rejuvenation of the Docks and the introduction of the Merseytram tram line in the CBD. As well as this, many roads and smaller streets in Liverpool have been rejuvenated and rebuilt as part of the redevelopments. Areas such as Princes Dock and the Kings Waterfront have seen heavy redevelopments. These have been to attract more tourists and shoppers to the CBD. The project has overall been successful as of yet, with 83% of consumers thinking that the city centre has improved. 91% of people said they were likely to return to Liverpool, and enjoyed the experience. And now, 40% of the shops in Liverpool One are new to the city, showing the popularity of the area. The previously redeveloped Albert Dock has been receiving an extra 100000 visitors per week, with Liverpool One itself receiving over 120000 visitors in the first day, and 13 million in the first year. It is safe the say the rejuvenation of Liverpoolââ¬â¢s CBD has been a success, and that Liverpool One has played a big part in reversing the effect of urban decline.
Sunday, October 27, 2019
Synthesis of Polyelectrolyte Pani Membrane
Synthesis of Polyelectrolyte Pani Membrane SYNTHESIS OF POLYELECTROLYTE PAni MEMBRANE BYÃ PHASE INVERSION AND ITS CHARACTERIZATIONS NURUL IZZATI IZNI BT MAT YUSOFF INTRODUCTION During the last few decades, the application of membrane based separation is the leading technology as one of the alternatives used in separating and removal of organic solvents. Moreover, it holds a significant commercial impact in several areas including water and wastewater treatment, chemical, food industries, pharmaceuticals, petrochemical related industries and bioseparation areas (Javed Alam et al., 2012). However, membrane-based separation processes are comparatively new in the field of separation which makes current membranes have limitations that hinder their wide used in aggressive solvents. The situation has led many studies in order to develop this membrane-based technology. Amongst the new generation of intrinsically conducting polymer, polyaniline (PAni) membranes have captured the intense attention of scientific community and one of the promising candidates. PAni is a polymer which poorly soluble in almost all solvents and has been widely known due to its conductive properties. Most important, it is easy to synthesize this polymer and it has an interesting doping and dedoping characteristics. However, the high yield of PAni demands several essential conditions. In order to obtain a higher quality polymer product, highly pured monomers, chemicals and solvents are needed. Besides, a strict control on polymerization conditions are needed since the small variation in the polymerization conditions might alter the nature of the product (Sadia Ameen et al., 2011). From the previous study, there are many research have been done in order to produce a stable and useful PAni membrane in nanofiltration. Most of the researches focused on synthesize, membrane fabrication and doping/dedoping of PAni membrane. However, the study on PAni membrane can be expand more instead of those previous research. The stability and performance of PAni membrane on polyelectrolyte coating should be done to further this study. Polyelectrolyte is a macromolecular species that upon being placed in water or any other ionizing solvent dissociates into a highly charged polymeric molecule (Reza Derakhshandeh et al., 2010). One of the methods of polyelectrolyte coating is layer by layer (LBL) coating. LBL is the simplest process being used by most of the researcher. There are numerous advantages of this method compared to other methods for thin film fabrication. The unique advantages of the method are that, both organic and inorganic can be incorporated into LBL thin films bes ides offers easier preparation and durable (unknown, yr). PROBLEM STATEMENTS There are numerous number of membranes have been develop by researchers. However, membranes nowadays have fixed physical-chemical properties which make separation by membranes very limited to the fixed selectivity of their constituent. Therefore, new membrane materials must be explored to cope with these limiting factors. Next generation of filtration membranes must be more selective and robust which requires low chemical and energy input (Sajjad Sedaghat, 2014). These properties must be considered to meet goals in applications since current membranes often problematic in cost. Membranes basically can be prepared from ceramic and polymeric materials. There are many studies shown that ceramic materials have several advantages over polymeric materials. As example, membrane from ceramic materials is highly stable in terms of chemical and thermal stability. Unfortunately, the market share of polymeric membranes is far greater than ceramic membranes as the polymeric materials are easier to process and less expensive (Khulbe et al., 2008). Instead of those materials, there are also membranes from inorganic materials that have been successfully applied in dehydration of tetrahydrofuran (THF). However, to produce an inorganic membrane requires a high cost rather than polymeric membrane beside their system design is more complex (Chapman et al., 2007). Therefore, membrane from polymeric material is a suitable candidate for the research since it meets the desired criteria. PAni as a polymeric material has been widely researched due to its conductive properties. To date, although PAni has been applied to a number of applications but there are still some deficiency. For instance, PAni membranes which applied to chemically crosslinked swell in THF although it retained their structure while too much thermal crosslinking gave membranes with no fluxes in any solvents at all. Furthermore, unsupported PAni membranes shrank during the process of thermal crosslinking which causing some trouble for large scale membrane productions where certain amount of bending or curling is required (Loh et al., 2008). An alternative to thermal or chemical crosslinking would be polyelectrolyte coating to make them more stable. OBJECTIVES The objectives of this study are: To produce phase inversion PAni membrane from chemical polymerization of PAni in APS solution. To introduce polyelectrolyte onto the synthesized membrane. To characterize the membrane morphological, physical, chemical, electrical and filtration properties. LITERATURE REVIEW METHODOLOGY Chemicals All chemicals and reagents will be used are analytical grade. AnalaR aniline, ammonium persulfate (APS), N-methyl-2-pyrrolidone (NMP), 4-methylpiperidine (4MP), poly(acrylic acid) (PAA) poly(allylamine hydrochloric) (PAH), hydrochloride acid (HCL) and lithium chloride (LiCl) PAni synthesis by chemical polymerization To produce an Aniline solution, 37.25 g of 0.4 mol Aniline will be added into a beaker containing 400 mL of 1.0 M HCl. The mixture is well mix. In another beaker, APS solution will be prepared by adding 91.26 g of 0.4 mol APS into 256 mL of 1.0 M HCL. To prevent the mixture from freezing at -15 oC, add 66.8 g and 39.68 g of LiCl into both beakers respectively. After finish the preparation of both solutions, mix them in a conical flask. The conical flask then will be put in an incubator shaker at temperature -15 oC and continuously shake for 48 h. During this period, a reaction occur which polymer filter cake will be produced. After 48 h, filter and wash with 1.5 L DI water to remove any left-over reactants. To deprotonate the emaraldine salt to its base form, the filter cake then is being place in a beaker contain 250 mL ammonia solution (33% w/v) in a beaker and will be mix by using incubator shaker for 12 h at room temperature. Next, the filter cake will be filter and will be wash with 1 L DI water. To remove any low weight PAni oligomers and decrease time drying, the filter cake will be wash again with 500 mL methanol before being dry under vacuum for 24 h. After drying, the dry Emeralidine Base (EB) powder will be pass through a 160 Ã µm mesh sieve to remove remaining clusters. Then, the EB powder will be stored under argon at 4 oC until required (Chapman et al., 2007). Membrane production by phase inversion PAni membrane will be produce by wet phase inversion method. First of all, 4MP and NMP will be mix in a beaker to make up the solvent. Then EB powder will be add using a funnel and mix at speed 300 rpm for 12 h. After 12 h mixing, dope the solution by adding maleic acids and mix at speed 150 rpm for 12 h. The solution will turn from dark blue to dark green to indicate that acid doping is taken place. The solution is then left to stand for 4 h to remove air bubble. Next, cast the solution on a nonwoven polyester support fabric and immediately immersed in DI water at room temperature for 24 h. During the 24 h, DI water will be change once after 12 h (Loh et al., 2008). Polyelectrolyte coating Polyelectrolyte coating of PAni membrane will be done by dipping the membrane into an anionic and cationic solution. Anionic solution will be used in this research is PAA while PAH is for cationic solution. To prepare anionic solution, PAA will be dissolve in DI water and 5 M HCl will be used to adjust the pH to 3.5. For cationic solution, PAH also will be dissolve in DI water but to adjust the pH solution to 3.5, 5 M NaOH will be used. Next, PAni membrane will be immerse in PAA solution for 10 min followed by two DI water rinses for 2 and 1 min respectively. The PAni membrane then will be immerse in PAH solution for 10 min followed by two DI water rinses for 2 and 1 min respectively. These complete the first bilayer of polyelectrolyte coating. For the next layer, the steps before will be repeated again which is starting from immersing in anionic solution and then cationic solution. After finish the process, the membrane need to be wash with ammonia and let it to fully dry before bei ng proceed with characterization (Jinhua Dai et al., 2005 unknown, yr). Characterization of PAni membrane Flow chart Stock and reagent solutions preparation PAni synthesis by chemical polymerization Characterization of EB powder by using GPC Membrane production and casting Polyelectrolyte coating Characterization Analysis GANTT CHART MILESTONE Table 7.1 : Milestone EXPECTED OUTCOMES/COMMERCIALIZATIONS REFERENCES Chapman, P., Loh, X.X., Livingston, A.G., Li, K., Oliveira, T.A.C. (2007). Polyaniline Membranes for The Dehydration of Tetrahydrofuran by Pervaporation. Journal of Membrane Science, 309 (2008), pp. 102-111. Loh, X.X., Sairam, M., Bismarck, A., Steinke, J.H.G., Livingston, A.G., Li, K. (2008) Crosslinked Integrally Skinned Asymmetric Polyaniline Membranes for Use in Organic Solvents. Journal of Membrane Science, 326 (2009), pp. 635-642.
Friday, October 25, 2019
Performance Assessment Essay -- essays papers
Performance Assessment Not since the development of the objective paper and pencil test early in the century has an assessment method hit the American educational scene with such force as has performance assessment methodology in the 1990s. Performance assessment relies on teacher observation and professional judgment to draw inferences about student achievement. The reasons for the intense interest in an assessment methodology can be summarized as follows: During the 1980s important new curriculum research and development efforts at school district, state, national and university levels began to provide new insights into the complexity of some of our most valued achievement targets. We came to understand the multidimensionality of what it means to be a proficient reader, writer, and math or science problem solver, for example. With these and other enhanced visions of the complex nature of the meaning of academic success came a sense of the insufficiency of the traditional multiple choice test. Educat ors began to embrace the reality that some targets, like complex reasoning, skill demonstration and product development, "require"--don't merely permit--the use of subjective, judgmental means of assessment. One simply cannot assess the ability to write well, communicate effectively in a second language, work cooperatively on a team, and complete science laboratory work in a quality manner using the traditional selected response modes of assessment. As a result, we have witnessed a virtual stampede of teachers, administrators and educational policy makers to embrace performance assessment. In short, educators have become as obsessed with performance assessment in the 1990s as we were with the multiple choice tests for 60 years. Warnings from the assessment community (Dunbar, Kortez, and Hoover, 1991) about the potential dangers of invalidity and unreliability of carelessly developed subjective assessments not only have often gone unheeded, but by and large they have gone unheard. Now that we are a decade into the performance assessment movement, however, some of those quality control lessons have begun to take hold. Assessment specialists have begun to articulate in terms that practitioners can understand the rules of evidence for the development and use of high quality performance assessments (e.g. Messick, 1994). As a result, we are well i... ... student performance in specific academic disciplines. If and when such opportunities arise, thorough training is essential for all who are to serve in this capacity. If the teachers issuing this invitation have developed or gleaned from their professional literature refined visions of the meaning of academic success, have transformed them into quality criteria and provide quality training for all who are to observe and evaluate student performance, this can be a very rewarding professional experience. If these standards are not met, it is wise to urge (and perhaps help with) a redevelopment of the assessment. The third and final contact for counselors is as an evaluator of students within the context of the guidance function, observing and judging academic or affective student characteristics. In this case, the counselor will be both the developer and user of the assessment and must know how to adhere to the above mentioned standards of assessment quality. For all of these reasons, it is advisable for school guidance and counseling personnel to understand when this methodology is likely to be useful and when it is not and how to design and develop sound performance assessments. Performance Assessment Essay -- essays papers Performance Assessment Not since the development of the objective paper and pencil test early in the century has an assessment method hit the American educational scene with such force as has performance assessment methodology in the 1990s. Performance assessment relies on teacher observation and professional judgment to draw inferences about student achievement. The reasons for the intense interest in an assessment methodology can be summarized as follows: During the 1980s important new curriculum research and development efforts at school district, state, national and university levels began to provide new insights into the complexity of some of our most valued achievement targets. We came to understand the multidimensionality of what it means to be a proficient reader, writer, and math or science problem solver, for example. With these and other enhanced visions of the complex nature of the meaning of academic success came a sense of the insufficiency of the traditional multiple choice test. Educat ors began to embrace the reality that some targets, like complex reasoning, skill demonstration and product development, "require"--don't merely permit--the use of subjective, judgmental means of assessment. One simply cannot assess the ability to write well, communicate effectively in a second language, work cooperatively on a team, and complete science laboratory work in a quality manner using the traditional selected response modes of assessment. As a result, we have witnessed a virtual stampede of teachers, administrators and educational policy makers to embrace performance assessment. In short, educators have become as obsessed with performance assessment in the 1990s as we were with the multiple choice tests for 60 years. Warnings from the assessment community (Dunbar, Kortez, and Hoover, 1991) about the potential dangers of invalidity and unreliability of carelessly developed subjective assessments not only have often gone unheeded, but by and large they have gone unheard. Now that we are a decade into the performance assessment movement, however, some of those quality control lessons have begun to take hold. Assessment specialists have begun to articulate in terms that practitioners can understand the rules of evidence for the development and use of high quality performance assessments (e.g. Messick, 1994). As a result, we are well i... ... student performance in specific academic disciplines. If and when such opportunities arise, thorough training is essential for all who are to serve in this capacity. If the teachers issuing this invitation have developed or gleaned from their professional literature refined visions of the meaning of academic success, have transformed them into quality criteria and provide quality training for all who are to observe and evaluate student performance, this can be a very rewarding professional experience. If these standards are not met, it is wise to urge (and perhaps help with) a redevelopment of the assessment. The third and final contact for counselors is as an evaluator of students within the context of the guidance function, observing and judging academic or affective student characteristics. In this case, the counselor will be both the developer and user of the assessment and must know how to adhere to the above mentioned standards of assessment quality. For all of these reasons, it is advisable for school guidance and counseling personnel to understand when this methodology is likely to be useful and when it is not and how to design and develop sound performance assessments.
Thursday, October 24, 2019
Greenhouse Gases
We know electricity is a form of energy and energy is the ability to perform work or make things happen, we also know there are several sources of energy and ââ¬Å"windâ⬠happens to be one of those sources. Since ââ¬Å"windâ⬠is simply air in motion, what then is ââ¬Å"wind energyâ⬠and how can we generate electricity from it? Well, based on my research, wind energy is the result of the sunââ¬â¢s energy interacting with the earthââ¬â¢s surfaces. It is also an ideal renewable energy source that is infinitely sustainable; pollution free; doesnââ¬â¢t use fuel; and doesnââ¬â¢t produce greenhouse gases, toxic or radioactive waste.This type of energy is considered a green power technology because it has minor impacts on the environment. When using wind to generate electricity we use machines known as turbines and this turbines use blades that are connected to a drive shaft to collect the windsââ¬â¢ kinetic energy which creates a lift that causes them to tur n and then produces electricity using an electric generator. Okay now we know basics, how does this energy source reduce greenhouse gases? First of all, what are these ââ¬Å"greenhouse gasesâ⬠?Greenhouse gases are gases in an atmosphere that absorb and emit radiation within the thermal infrared range . The primary greenhouse gases in the Earth's atmosphere are water vapor, carbon dioxide (the principal greenhouse gas), methane, nitrous oxide, and ozone. From definition, we know that generating electricity for wind does not produce any of these GHG. Before analyzing how efficient wind energy is in reducing GHG, let us consider some other sources of energy. These other sources include: hydropower (water), solar (sun), geothermal (heat) and nuclear.
Tuesday, October 22, 2019
Pedicure and Dressing Area
Client: Excuse me. Where would I find body lotion? Lucy: Body lotion? Have a look in the makeup section, in isle 4. Client: Actually, I did and there wasn't any. Lucy: I'm sorry. Let me get some from De back. Do you need anything else? Client: Yes. I couldn't find any nail file. Lucy: Ooh. I'm sorry, but we don't have any nail file at the moment. Client: Oh, no. Don't tell me that. Mom is going to kill me.I lost her nail file yesterday, so I need to get new one. Lucy: I'm sorry to hear that. Where is my nail file Let's see, it will be 80 dollars in all. But you can charge it to your room. Great. Thank you. By the way, how much will the massage and the facial? I don't have much cash on me. Sure. Let me show you to the dressing area. Mom. That's a long time. Can I get massage in the meantime? For around 20 minutes. How long do I have to wait? Of course, but you might have to wait. There's someone ahead of you.Good morning. WSDL it be possible to get facial? Can I help you, Ms' Mary: I' m Mary. I have a 4 o'clock appointment for a manicure with Lisa. Receptionist: get a facial in the meantime? Receptionist: I'm sorry we don't have anything until 5. Mary: Oh no. What about a massage. Receptionist: Yes. Please let me show you the dressing area. Mary: Thank you. One more question. Is it customary to tip the staff? Receptionist: Well, that's up to you. But most clients give one or two dollars.
Essay on how to make egg roles
Essay on how to make egg roles Essay on how to make egg roles ââ¬Å"All men are created equal.â⬠Black, white, brown, short, tall, smart, and dumb, all are created equally. Therefore every person deserves fair chance at life. Unfortunately, it is a fact that not everyone is born normal and able to do a task unlike a common person, who does not have any disabilities. According to the National Association of the Deaf, ââ¬Å"Almost 10 percent of all American have some kind of hearing loss. These ten percent suffer from unfair treatment from professional, social and government service providers, including court and policeâ⬠. Obviously, because deaf and hard of hearing have limited hearing, their communication and social skills are below a common hearing person. Therefore, most of these people are ignored, neglected, and discriminated against. However, a citizen protected by the American with Disabilities Act, deaf and hard of hearing people deserve equal rights and must be treated equally as if they were a person with no disabilities. T his ensures a future in a deaf or hard of hearing personââ¬â¢s life. They now can get jobs without the discrimination of employers, which is a great thing for not only deaf people, but to all disabled persons around the United States. If everyone is entitled to all the rights and freedom that is said in the Declaration, disabled people should not be robbed of their rights, yet they seem to be unvalued and less able to work than a normal person. Which is not true. A deaf person is just as abled as a hearing person only they canââ¬â¢t hear. They can walk around living life and no one will notice until they are asked about it. To solve this problem, on July 26, 1990, President George Bush signed the ADA law that serves and protects people with disabilities. This law prohibits discrimination against the disabled by employers. When the law was signed, new doors opened for the deaf and hard of hearing community for a better opportunity. If a deaf or hard of hearing employee can pass the essential part of the job qualification, he or she is protected by the ADA to be hired. Also, the ADA prohibits employers to discriminate disabled people in means of job applications procedures, pay rates, and promotions. The second title, Title II,
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