...process should address these principles by using environmentally benign solvents and nontoxic chemicals [3]. Nanomaterials often show unique and considerably changed physical, chemical and biological properties compared to their macro scaled counterparts [8]. Synthesis of noble metal nanoparticles for applications such as catalysis, electronics, optics, environmental, and biotechnology is an area of constant interest [9–15]. Gold, silver, and copper have been used mostly for the synthesis of stable dispersions of nanoparticles, which are useful in areas such as photography, catalysis, biological labeling, photonics, optoelectronics and surface-enhanced Raman scattering (SERS) detection [16,17]. Additionally, metal nanoparticles have a surface plasmon resonance absorption in the UV–Visible region. The surface plasmon band arises from the coherent existence of free electrons in the conduction band due to the small particle size [18,19]. The band shift is dependent on the particle size,...
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...Yvette Bostic Robley Welliver Lit 205/11 September 9, 2013 In order for one to understand Twyla’s characteristic of being slightly prejudice and the secret hate that she had toward her childhood friend has to do with the concepts and thoughts that Twyla’s mother in stored in her as a child about other people who were not like her and a lot of those concept where wrong. Twyla’s roommate Roberta did not meet any of the negative things Twyla’s mother had told her about Africa American people. Twyla thought she deserved better and was supposed to have better because she was white. She secretly had had toward Roberta because she ended up with the life Twyla was supposed to have, but because of the bond they had growing up would somehow keep them connected every time they ran into each other in passing. In the beginning of the story Twyla had a negative attitude toward African American people. Twyla’s mother had warned her as a little girl that “they never washed their hair and they smelled funny” (Morrison, Toni) this gives you an indication that Twyla was white and was raised by a prejudice white mother whom which at times she seemed to be ashamed of. The first time Twyla and Roberta was introduced Twyla seemed to be uncomfortable. She told Bozo “my mother won’t like you putting me in here” (Morrison, Toni) but as time went on it did not seem to bother Twyla much, Twyla and Roberta became best friends in the orphan home, they were always together and the played together...
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...002-740 Final Fairing & Finishing Techniques for fairing surfaces with WEST SYSTEM® Brand epoxy and a guide to finish coatings Final Fairing The first part of this manual describes final fairing techniques as they apply to boatbuilding and boat repair. These techniques are also useful for many nonmarine applications such as auto body repair or building forms and molds. Also included are methods for applying fairing compound that can reduce trial and error, and help make the fairing process easier and faster. Finishing The second part of this manual discusses epoxy as a barrier coating and the wide variety of finish coating options available for ultraviolet protection and long term durability. Cost, compatibility, durability, ease of application and health hazards are variables to consider in the selection of a coating option for your project. Catalog No. 002-740 Final Fairing & Finishing Techniques for fairing surfaces with WEST SYSTEM® Brand epoxy and a guide to finish coating 5th Edition—June 2005 The techniques described in this manual are based on the handling characteristics and physical properties of WEST SYSTEM Epoxy products. Because physical properties of resin systems and epoxy brands vary, using the techniques in this publication with coatings or adhesives other than WEST SYSTEM is not recommended. Refer to the current WEST SYSTEM User Manual & Product Guide for complete product information, and safety and handling guidelines. The information presented herein...
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...also adds a layer of protection against the elements. Here's why a sealcoat is a good investment for your parking lot no matter how large or small it is. Sealcoating Covers Imperfections In Color Sealcoating is a thin layer much like paint. It's dark, so it makes the surface of your parking lot dark again, just like when it was new. The coating also covers oil and dirt stains so the surface of your lot has a uniform color again. The only thing sealcoating doesn't cover up is damage such as cracks and potholes. Damage will show right through a sealcoat so the cracks and holes must be repaired before sealcoating is applied. Sealcoating isn't done to repair asphalt, it's done to improve its appearance and add a protective coating....
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...Licom Systems Ltd. 3D Surface Creation Training Course Notes INDEX OVERVIEW ........................................................................................................................ 1 WORK VOLUME ................................................................................................................. 1 WORK PLANE .................................................................................................................... 1 WORK VOLUME CREATION. .............................................................................................. 2 2D WORK PLANES ............................................................................................................. 2 RULED SURFACE ............................................................................................................. 3 SWEPT SURFACE 2 CURVES ......................................................................................... 4 SWEPT SURFACE 3 CURVES ......................................................................................... 5 SURFACE OF REVOLUTION.......................................................................................... 6 COONS PATCH 3 CURVES.............................................................................................. 7 COONS PATCH 4 CURVES.............................................................................................. 8 INTRODUCTION .............................................................
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...Mark Allen MNGT. 4600 Mrs. Newman November 12, 2014 Final Report (1st Draft) I am doing my community service with Project Uplift, an organization affiliated with the university, which I have been involved with for almost 3 years now. Project Uplift is a volunteer/mentor program, which helps children around Lee County develop constructive, happy lives. I joined this organization in hopes of helping to make a child’s life better by spending a few hours per week with them. My friend, Sammy, and I began Project Uplift together by choosing a child based on information given to us by the organization. I have gotten the opportunity to spend many hours with Rell throughout our time together. I hope he gets as much out of our meetings as I do. My goal with Rell is to have an impact on him in a positive way so that he makes good decisions in life based on what he has learned through the years with Sammy and I. My experience with Project Uplift thus far has been magnificent and I believe it has made me a better person along the way. Seeing Rell grow up throughout the time spent with him is probably my favorite part of the whole experience. Rell was in fifth grade when we first met him two and a half years ago. It was difficult to even get a word out of him in the first couple of months we met, but now he is bouncing off of the walls when we pick him up. We have grown very close throughout the past couple of years and have made great progress from where we started. ...
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...V the same time as the first time I will have to x the same time as the first time I will have met you and the rest of it. ..........x X X X X I dunno how much you can do to help you find a place in my opinion is that it was the first time I will have to x the same time as the first time I will have to x the same time as the first time I will have to x the same time as the first time I was just wondering if you have shipped this item yet, but I think the only, , xx,Just studying waiting to get my jobseekers money. Whats stressfulJust studying waiting to get my jobseekers money. Whats stressfulJust studying waiting to get my jobseekers money. Whats stressfulJust studying waiting to get my jobseekers money. Whats stressfulJust studying waiting to get my jobseekers money. Whats stressfulJust studying waiting to get my jobseekers money. Whats stressfulJust studying waiting to get my jobseekers money. Whats stressfulJust studying waiting to get my jobseekers money. Whats stressfulJust studying waiting to get my jobseekers money. Whats stressfulJust studying waiting to get my jobseekers money. Whats stressfulJust studying waiting to get my jobseekers money. Whats stressfulJust studying waiting to get my jobseekers money. Whats stressfulJust studying waiting to get my jobseekers money. Whats stressfulJust studying waiting to get my jobseekers money. Whats stressfulJust studying waiting to get my jobseekers money. Whats stressfulJust studying waiting to get my jobseekers money. Whats...
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...Medium Rough Fine Boring Drilling Reaming Fine Broach grinding Orientation tolerances Fine Milling Parallelism tolerance Perpendicularity tolerance Angularity tolerance Fine Shaving Medium Fine Hone finishing Super finishing High Fine Buffing Fine Paper finishing Fine Lapping Rough Positional tolerances Fine Grinding Positional tolerance Fine Symmetry Fine Liquid honing Coaxiality tolerance or concentricity tolerance Surface rolling Electric discharge carving WEDM (Wire electric discharge machining) Fine Chemical polishing Electrolytic abrasion Circular run-out tolerance t t tt tt t ttt tt ttt t tt t t t t t t t tt t ttt t t ttt t The tolerance range in the considered plane is the area between two concentric circles separated by distance t. The tolerance range is the range contained between two coaxial cylinder surfaces separated by distance t. The tolerance range is the range contained between the two envelope...
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...coatings to adhere satisfactorily. Physical Characteristics Of Paint Colour : Grey Texture : Matt Specific Gravity : 0.85 - 1.00 (for mixture of Base and Hardener) Solid Content : 20 ± 2% by volume Surface Preparation : For galvanised surfaces and light alloys, thorough solvent degreasing to SSPC-SP1 is necessary. For steel, abrasive blast to Sa 2½ ISO 8501-1:1988 is required. All surfaces must be clean and dry before the paint is applied on. Recommended No. Of Coat : 1 coat Recommended Film Thickness Per Coat : 12 microns for dry film 60 microns for wet film Theoretical Coverage At Recommended Film Thickness : 16.6 m /litre (for dry film thickness of 12 microns) Practical Coverage (20% Loss Factor) : Recommended For Use: 2 Theoretical Coverage = Volume Solids (%) X 10 (m/litre) Dry Film Thickness () 2 13.3 m /litre (for dry film thickness of 12 microns) Note: This theoretical coverage rate has been calculated from the volume solids of the material and is related to the amount of coating applied onto a perfectly smooth surface without wastage. For a practical coverage rate, due allowance should be made for atmospheric conditions, surface roughness, geometry of the article being coated, the skill of applicator, method of application etc. when estimating quantities required for a particular job. Application Methods : Brush, roller, compressed air spray and airless...
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...Examining young children’s 1 The case study in this article presented the process of conceptual change in six-year olds. The process was described from two different view points: how the children’s conceptions change during the instructional process and how the social discussion during the experimental exploration can be seen in terms of the cognitive changes in children. Young children’s conceptual change has not been as widely studied as that in older students. The researcher in this case study suggested that conceptual changes as a party of the learning process should be viewed as a life long process, which begins before children enter school. Six-year-old children undergo floating and sinking during their conceptual change process. This article attempted to describe this process and how social discourse during the process of knowledge construction is linked to the change in children’s concepts. Conceptual change had generally been examined only through cognitive functions as a general process without consideration of the context before this case study. The children that were selected for this study were pre-schoolers age six. They all hailed from the city of Joensuu, Finland and were from the kindergarten involved with the ESKO research project. The groups wanted to participate in the study, but the researchers taught the topic after the teachers disagreed. The children came from two different groups in the ...
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...Chapter 1 – Materials Engineering Concepts * 1.1 Economic Factors * Availability and cost of raw materials * Manufacturing costs * Transportation * Placing * Maintenance * 1.2 Mechanical Properties * Loading conditions * Static load – A sustained loading of the structure over a period of time * Dynamic load – A load that generates a shock or vibration in the structure (periodic – repeats itself with time, random- load pattern never repeats, or transient- impulse load applied over short interval) * Dead load- Static load, always applied (weight of the structure) * Live load- Dynamic loads, (people in a building or movable objects) * Stress-Strain Relations * Stress : σ=FA (psi, ksi, kPa, MPa, GPa) * Strain: ε=Change in LengthOriginal Length (%, in/in, mm/mm) * Elastic behavior * Elasticity- instantaneous response (deformation to load) and must return to its original shape when the load is removed. Stretches the bonds between atoms-doesn’t change arrangement of atoms * Young’s Modulus (Modulus of Elasticity)- Slope of the linear portion of the stress-strain curve E=σε * Poisson’s ratio- Ratio of the lateral strain to the axial strain (must be between 0.0(compressible material)-0.5(does not change volume when load applied)) Usually between 0.1 and 0.45 ν=-εlεa * Generalized Hooke’s Law * εx=σx-ν(σy+σz)E ...
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...Water Resource Plan Evelyn Hillard University of Phoenix My selection of water resource is water pollution. This is cause by different problem when we dump garage, chemicals in the water, oil, and human waste in rivers and ocean. Water pollution have many different causes it makes it hard sometimes to resolve this issue. Sewage is one of the main causes of water pollution. This type of water pollution affects our lives in many ways. Over billions of people on this earth dispose of sewage waste a lot. When you dispose of sewage in any lakes, rivers, and ocean it takes a affect on our health and living condition. Many people do not realize that water pollution is very important and many people can get sick from it. I believe a good management plan will alleviate the problem of water pollution. Water pollution needs to have strict laws of waste and fuel dumping. They need certain people to go out and do testing on these lakes, rivers, and ocean to make sure that no one is dumping anything into the water. We should also have a machine that clean the water every so often. Making sure that it will collect all the trash and waste. The government needs to make s person pay a fine if they get caught polluting the water. I do not understand of where anyone should have a opposing view of water pollution. My view will be making sure that this world stop polluting the water. This problem is for our safety...
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...(Size: 2.84 MB / Downloads: 1666) ABSTRACT Microsoft Surface, is a forthcoming Multi-touch product from Microsoft This is developed as a software and hardware combination technology. That allows a user, or multiple users, to manipulate digital content by the use of natural motions, hand gestures, or physical objects. It was announced on May 29, 2007 at D5 conference, and is expected to be released by commercial partners in spring 2008. Initial customers will be in the hospitality businesses, such as restaurants, hotels, retail, public entertainment venues and the military for tactical overviews. A projector underneath the surface projects an image onto its underside, while five cameras in the machine's housing record reflections of infrared light from human fingertips. The camera can also recognize objects placed on the surface if those objects have specially-designed "tags" applied to them. Users can interact with the machine by touching or dragging their fingertips and objects such as paintbrushes across the screen, or by placing and moving tagged objects. INTRODUCTION We are going to represent paper on Microsoft surface which is known as surface computing. Microsoft Surface is a forthcoming Multi-touch product from Microsoft which is developed as software and hardware combination technology. Minority Report meets the kitchen table in the new Surface from Microsoft. Claiming that surface computing is "as significant as the move from DOS to GUI,"...
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...Speech 101 10/24/11 Topic – My meniscus injury and the processes in which I went through Intro – About a year and a half ago I was training pretty hard to get into shape for the fire academy here at rio hondo. I would run atleast 5 miles a day to keep good cardio, haha I don’t do much of any running any more. Well, One of those days I went on an uphill run with a 20lb weight pack and experienced some pain in my left knee, about a month later It still hurt so i went to the doctor and after an MRI it was determined that I may have torn my meniscus and I would not be able to attend the academy until it healed. Today im going to go over some knowledge I gained about these types of injuries by experiencing one first hand. Body – 1. First off I am going to start with some quick anatomy on the largest joint in your body .inside there are 4 ligaments that holds the bones together. ACL PCL MCL LCL you have your KNEE CAP and then your MENISCUS. The meniscus is a rubbery, C-shaped disc that cushions your knee. Each knee has two of them, one at the outer edge of the knee and one at the inner edge, they serve to spread and cushion the weight across the knee. A tear in the meniscus can either be bad or much worse depending on the location because the outside of the menisci has really good circulation but the inside has almost no circulation at all making this knee injury a very uncertain window to recover from, some can recover in a month, others like me can take over a year. In...
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...The Importance of Rewriting Storm Water Regulations Danielle Nielsen Goochland High School Abstract This paper observes the negative and harmful effects of water pollution and storm water runoff on the environment and the surrounding community. The most common form of water pollution is sediment runoff. It then goes on to explain the research and effectiveness of Best Management Practices (BMPs) and their positive effects. BMPs are conservation practices that can preserve or improve the state of the environment. The argument stated in this essay refers to the use of storm water regulations in the United States. Most regulations are too strict to allow for any conservation practices because they can be very costly and ineffective if carried out improperly. If the storm water regulations are rewritten to allow for BMPs, then the state of commercial and non-commercial water sources could be greatly improved. The Importance of Rewriting Storm Water Regulations Think about all the bodies of water on our planet. Every river, lake, stream, and is essential to the way our world functions. Unfortunately, our society has done very little to preserve these water sources and as a result, our rivers, lakes, streams, and oceans are suffering from many forms of pollution. Every oil spill, discarded water bottle, and obstructive dam continually add to our already-polluted waters, and very little is being done to reverse this problem. The most prominent issue...
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