Significance of Nanotechnology in CIVIL ENGINEERING NANOTECHNOLOGY in construction PRESENTED BY: B.YUGANDHAR‚ 10BG1AO160‚ II B.Tech‚ C.E‚ S.V.I.S.T‚ KADAPA‚ 8985864089 BALARAJU.YUGANDHAR@GMAIL.COM
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comparison to cast iron Flap gate. Features and Benifits • Easy to install - No grouting required. • Light weight due to to the use of HDPE. • Virtually maintenance free. • Ultra Violet and impact resistant. • Standard sizes available for immediate dispatch. • Supplied complete with all seals and stainless steel fixings. Specifications Nominal diameter: DN100mm to DN3000mm‚ other sizes available Maximum working pressure: 25.0 meter water Operating temperature: 90° Corrosion resistance
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steel ball. Casting ball manufacturers mix scrap steel‚ scrap metal and other waste metals in intermediate frequency electric stove for heating so as to fully melting. Right amount precious metal alloy‚ such as ferrochrome‚ ferromanganese‚ vanadium iron are added in melting process. When temperature is above 1550 ℃‚ powering hot metal to the steel mold or mold steel ball production line. This kind of ball is called casting steel ball or casting grinding ball. 10.0% or higher chromium content‚ carbon
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plutonium and thorium are possible energy sources. To protect the environment from radioactivity‚ the fuel is cladded. For the cladding is usually zirconium alloys or stainless steels used because it should be able to let the neutrons pass and be corrosion resistant. This cladding has also the advantage to give strength to the rod. The reaction in the nuclear reactor is controlled with control rods. These control rods should be able to absorb the neutrons‚ so cadmium and boron are most of the time
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Introduction Brasses are copper zinc alloys. It is a substitutional alloy. Brass has higher malleability than copper or zinc. In general‚ they have good strength and corrosion resistance‚ although their structure and properties are a function of zinc content. The relatively low melting point of brass (900 to 940°C‚ depending on composition) and its flow characteristics make it a relatively easy material to cast. By varying the proportions of copper and zinc‚ the properties of the brass can
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Chapter 1 Chemical Reactions and Equations Q.1. Why should magnesium ribbon be cleaned before burning in air ? Ans: Magnesium ribbon is a very reactive metal. When stored it reacts with oxygen to form a layer of magnesium oxide on its surface. This layer of magnesium oxide being a stable compound prevents further reaction of magnesium with oxygen. The magnesium is cleaned before burning in air to remove this layer so that the metal can be exposed to air properly. Q.2. Write the balanced
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Chapter 3 Centrifugation Biochemistry and Molecular Biology (BMB) 3.1 Introduction 3.2 Basic Principle of sedimentation 3.3 Types‚ care and safety of centrifuges 3.4 Preparative centrifugation 3.5 Analytical centrifugation Analytical Biochemistry (AB) 3.4.3 Ultracentrifugation Koolman‚ Color Atlas of Biochemistry‚ 2nd edition 1 General Steps in Biochemical Separation 2 Separation of Macromolecules Chromatography‚ precipitation Electrophoresis‚ ultracentrifugation 3
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Chromite‚ Platinum‚ Gravel‚ Silver‚ Nickel‚ Iron‚ Marble‚ Sulfur 2. Describe the characteristic features of each minerals. Gold- soft‚ lustrous yellow‚ malleable metal. It is one of the transition metals. It is highly sought after precious metal in jewelry Copper- is valued for strength‚ malleability‚ ductility‚ and ability to conduct electricity and heat. It is also non-magnetic‚ resists wear‚ and forms a green patina which makes it resistant to corrosion. Chromite-is the most important ore of
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WOODS Is organic and will decay over time. In wetter conditions with decay will be quicker. It is also subject to conditions such as dry rot‚ or pests. The greater the density of wood‚ the greater its mechanical strength. Knots also contained‚ formed where branches grew from main trunk‚ or where a bud was formed. Can generate weaknesses‚ or be aesthetic. HARDWOODS o o Deciduous (leaf-losing) trees. Slower growing‚ making them denser. Some take up to 100 years to reach full maturity
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Research Task: Metals By Megan Forbes 1. Gold Figure 1 Evidence of gold mines: Ancient Egyptian map showing roads to Nubian gold mines‚ dated 1400-1200 BC (Located in the Egyptian Museum in Turin‚ Italy) Figure 1 Evidence of gold mines: Ancient Egyptian map showing roads to Nubian gold mines‚ dated 1400-1200 BC (Located in the Egyptian Museum in Turin‚ Italy) Figure 2 Ancient Egyptian hieroglyphs depicting gold Figure 2 Ancient Egyptian hieroglyphs depicting gold i) Gold was no
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