SEM images of the surface of kepok banana peel powder and cellulose extracted from kepok banana peel are show in figure 2 at a 10.000 magnification. From the image‚ cellulose and banana kepok peel powder showed different size and shape. The banana kepok peel powder has been found many small particles in the surface that cause the morphology is irregular shapes and heterogeneous‚ whereas the morphology of cellulose is homogeneous with the structure of dense and large particles. Composition elements
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The quoted size of a monitor is determined by measuring it ________. A) depth-wise B) diagonally C) vertically D) horizontally 12) A laser printer is a high-resolution printer that uses which of the following types of technology? A) Fusion B) Electrostatic C) Impact D) Static 13) A hard disk drive consists of several fixed‚ rapidly rotating disks called: A) platters. B)
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electricity. An Ionic compound is formed from the electrical attraction between anions and cations‚ typically a metal with a non-metal‚ except hydrogen. When an ionic compound forms‚ the anion transfers an electron to the cation which creates an electrostatic bond and an electrically neutral compound. Also‚ they readily dissolve in aqueous solutions and are good conductors of heat and electricity. Further‚ ionic compounds can be classified as either strong conductors or weak conductors. In contrast
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Data Digitisation At a time when information and data are becoming an integral part of every organization‚ people have realized that paper records‚ books‚ and journals are not as handy or safe as CD-ROMs. Information must be stored in such media that the storage is safe and the retrieval is quick. The age of Data Digitisation has begun. Digitisation is the process by which physical or manual records such as text‚ images‚ video‚ and audio are converted into digital forms. This is of paramount
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surface of a body of water to have a mildly elastic film over it. The type of surface tension connection made with hydrogen and oxygen molecules are called hydrogen bonds. A simple bubble mixture must contain these elements because hydrogen is electrostatic and the other elements are electronegative. Naturally‚ opposites attract‚ so the water molecules form together to make surface tension. Bodies of water unaffected by gravity will always form a sphere because the water molecules inside try to minimize
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β-pleated sheets are folded into compact globule. Protein folding occurs as consequence of interactions between the side chains in their primary structure. It has several interactions that stabilize tertiary structure: Hydrophobic interactions Electrostatic interactions Hydrogen bonds Covalent bond Question (2): Describe the process of protein denaturation. What conditions cause denaturation? The process of protein structure disruption is called denaturation; when a protein is denatured‚ the
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discrepancy could have come from misreading of the x and y values from the mica sheet. It was sometimes hard to get exact values for the x and y. This could have been the reason for the difference between the accepted and observed values. 6.3.2 Electrostatic Deflection Objective: The purpose of the lab was to create a potential difference between the deflection plates of the plates and measure various x and y values at fixed values of Va and Vd. With this data we will make a graph of y vs. x2 and
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electrons. 1.2 IONIC BONDING Exist between Metal + Non metal Formed by the transferring of electrons from metal atom to non metal atom Formation of oppositely charged cation and anion → the two ions held together by strong electrostatic force (ionic bond) Metal loses its valence e → cation Non – metal gains e → anion Eg : Formation of NaCl‚ MgBr2 1.2.1 PROPERTIES OF IONIC COMPOUNDS The ions occupy fixed positions in the ionic lattice They can conduct electricity
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Finite element analysis (FEA) is widely utilized in the automotive industry to study a variety of engineering design activities such as crash test simulations and optimization of manufacturing processes. One of the latest areas to benefit from FEA technology is the E-coat paint process. E-coat paint provides for excellent corrosion resistance and is the first of several different protective paint layers applied to an automotive body. During the E-coat paint process‚ an entire automotive body is immersed
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www.ProcessEngr.com Oil Refinery Processes A Brief Overview Ronald (Ron) F. Colwell‚ P.E. mol`bpp Copyright © 2009 Process Engineering Associates‚ LLC. All rights reserved. “Excellence in Applied Chemical Engineering” Some Historical Events • • • • • • • • • • • • • • • • • 3000 BC Sumerians use asphalt as an adhesive; Eqyptians use pitch to grease chariot wheels; Mesopotamians use bitumen to seal boats 600 BC Confucius writes about drilling a 100’ gas well
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