Photosensitive materials (x-ray films) are used to record the invisible x-ray image. It is required to reproduce all the characteristics of the invisible image in visible form .The films ability to do so depends on its sensitometric properties. Sensitometer: Measures films sensitivity to light; shows the range of densities on an image. Sensitometry:- The scientific study of the response of photosensitive material to different levels of exposure. How is it done? Producing a sensitometric strip
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Sustainable material －POROUS PAVEMENT -- OPEN-JOINED PAVING BLOCKS Introduction: This essay will focus on the application of open-joined paving blocks to minimize the impact of urban development on natural drainage system-capturing‚ slowing and absorbing storm water in the urban condition. In the natural system‚ 10% surface flow‚30% evapotranspiration‚ 40% infiltration‚ 20% interflow‚ while in an urban condition‚ 75% surface flow to pipes‚ 15% evapotranspiration
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Lecture based on Materials (Book: The science of strong materials‚ Penguin Publishers.) The aeronautical journal (Library can order for you)‚ one article written in 1996‚ by Peal‚ I.J.Mocolm. Ceramic Science‚ pg 123-131. (Relevant to exam) There are two key reasons for using thermoplastic composites: * save time & handling costs in production * eliminate labour-intensive riveting & bonding * can produce large profile sections that are some 20 % lighter than metal &
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Aims: The materials aim to cover some of the MoE’s (Ministry of Education) learning outcomes such as familiarity and correct use of parts of speech‚ syllables etc. Poetry is a Ministry curriculum genre to be used both for passive analysis as well as a productive skill and teachers shy away from it for many reasons‚ which I will deal with later. Evans (2001) proposes poetry as a good medium for teaching creative writing‚ something parents and the MoE want but schools find hard to teach.
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Smokers Get a Raw Deal Stanley S. Scott Stanley S. Scott (1933-1992) was vice president and director of corporate affairs of Philip Morris Companies Inc. This essay originally appeared on December 29‚ 1984‚ on the op-ed page of the New York Times. The Civil Rights Act‚ the Voting Rights Act‚ and a host of antidiscrimination laws notwithstanding‚ millions of Americans are still forced to sit in the back of planes‚ trains‚ and buses. Many more are subject to segregation in public places
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text ‘Raw’ by Scott Monk and the film Shawshank Redemption that have had an impact on society and their image on institutions. The basic definition of an institution is an organisation which is founded for a religious‚ educational‚ social‚ imprisonment or similar purpose. The significance that these texts have on the image of institutions is so important through the elaborate actions and behavior of the characters and the roles in which they play in. The way in which Scott Monk in his book ‘Raw’ created
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SMART MATERIALS 1. Introduction The primary characteristic of a ‘‘smart material’’ is that it has the ability to respond to external stimuli in a technically useful and technically controlled way. The words ‘‘technically useful’’ and ‘‘technically controlled’’ are emphasized since all materials respond to external stimuli of some sort or other (as a simple example‚ all materials respond to temperature by changing their volume)‚ however‚ to be considered a ‘‘smart material’’ the response must
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CHAPTER 5 MATERIALS HANDLING METHODS ______________________________________________________ 1. Introduction Material Handling is the movement‚ storage‚ control and protection of materials‚ goods and products throughout the process of manufacturing‚ distribution‚ consumption and disposal. The focus is on the methods‚ mechanical equipment‚ systems and related controls used to achieve these functions. The material handling industry manufactures and distributes the equipment and services required
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Composite Materials A composite is a combination of two or more materials bonded together to gain some overall necessary goods. Types of composite include: laminated materials fibre composites particle composites. A laminate contains thin pieces of material fused together. Common examples are plywood and car windscreens. Wood is durable when exposed to a ductile force equivalent to its grain‚ but if the strength is across the particle it splits simply. A windscreen is made in a parallel way; two
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By:Samailagi Poteki Production and Consumption in the Raw Substitution is present in our everyday lives‚ and maybe much more than we once thought. Marx’s idea of commodity fetishism is loosely defined by substitutions‚ stand-ins‚ and clones of real objects and real labor. These commodities tape off and block out the public form the truth. In this essay I will peel back the label on some of these products and companies that have sold us lies time and time again. We are the martyr to the capitalist
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