wood (2) Phloem or bast (3) Cambium. They have different kinds of tissue elements. (1) Xylem or wood This lies towards the centre and is composed of (i) Trachae or vessels (ii) sone tracheids‚ (iii) a number of wood fibres and (iv) a small patch of wood parenchyma. Vessels are of various kinds such as spiral‚ annular‚ scalariform‚ and reticulate and pitted (with simple or bordered pits). Some tracheids also lie associated with the vessels. Wood fibres and wood parenchymatous cells lying associated
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COMPUTER GRAPHICS (XCS 354) Two Mark Question UNIT – I 1. Define Computer graphics. Computer graphics remains one of the most existing and rapidly growing computer fields. Computer graphics may be defined as a pictorial representation or graphical representation of objects in a computer. 2. What is meant by scan code? When a key is pressed on the keyboard‚ the keyboard controller places a code carry to the key pressed into a part of the memory called as the keyboard buffer. This code is
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MIMO-OFDM VISIBLE LIGHT COMMUNICATION SYSTEM WITH LOW COMPLEXITY SUBJECT: MODERN SATELLITE COMMUNICATION SUBJECT CODE: EEE 637 SUBMITTED BY‚ M.TECH COMMUNICATION ENGINEERING (2nd SEMESTER) SCHOOL OF ELECTRONICS ENGINEERING (SENSE) VELLORE INSTITUTE OF TECHNOLOGY VELLORE‚ TAMIL NADU - 632014 ABSTRACT Visible Light Communication (VLC) systems are being developed with the ultimate aim to create ultra-high-speed‚ high security‚ biologically friendly communications networks that
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CHAPTER I ------------------------------------------------- INTRODUCTION 1.1 Introduction Portable electronic devices are very popular nowadays. As the usage of these portable electronic devices is increasing‚ the demands for longer battery life are also increasing. These batteries need to be recharged or replaced periodically. It is a hassle to charge or change the battery after a while‚ especially when there is no power outlet around. Therefore‚ our team is inspired to design a wireless
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BANGLADESH RESEARCH PUBLICATIONS JOURNAL ISSN: 1998-2003‚ Volume: 7‚ Issue: 4‚ Page: 403-411‚ November - December‚ 2012 PERFORMANCE ANALYSIS OF A SINGLE RELAY COOPERATIVE COMMUNICATION SYSTEM WITH DIFFERENT DIVERSITY PROTOCOL Md. Mahabub Hossain1*‚ Md. Dulal Haque1‚ Md. Mominul Islam2‚ Md. Raji All Noor Islam1 and Mohammad Minhazur Rahman1 Md. Mahabub Hossain‚ Md. Dulal Haque‚ Md. Mominul Islam‚ Md. Raji All Noor Islam and Mohammad Minhazur Rahman (2012). Performance Analysis of a Single Relay
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Research Program (HAARP). This is an ionospheric research center. This ionospheric research facility in Gakona‚ Alaska studies the properties of the ionosphere. HAARP is the largest ionospheric heater. An ionospheric heater is defined as an array of antennas which are used for heating the ionosphere. HAARP’s radio beams excites or heats the ionized particles. HAARP was designed to probe 50k patches of the atmosphere with high frequency radio waves. The atmosphere is made up of three layers. The
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its spatially uniform and longitudinally polarized series current of the short-circuited CRLH TL is utilized in the context of RF field excitation in a 7-Tesla magnetic resonance imaging (MRI) scanner. The usage of coaxial stubs instead of sidewise microstrip lines has several advantages‚ especially for the MRI application‚ such as a unit cell with smaller width‚ the unwanted longitudinal magnetic field components excited by the shunt resonantor are shielded by the outer coaxial connector and the upper
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CONTENTS Introduction to AutoCAD GUI of AutoCAD Commands in AutoCAD Layers Viewports Exercises • Sample – 1 • Sample – 2 • Sample – 3 • Sample – 4 • Sample – 5 3D in AutoCAD 3D commands 3D Exercises • Sample – 1 • Sample – 2 AutoCAD AutoCAD‚ developed by Autodesk Inc.‚ is the most popular PC – CAD system available in the market. This design package is a general purpose computer aided design and drafting application for your computer. The speed and ease with
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Successional sequence for flora species and changes in richness and assemblage due to ecological succession on Rangitoto Island‚ New Zealand Successional sequence for flora species and changes in richness and assemblage due to ecological succession on Rangitoto Island‚ New Zealand Abstract: A survey of 12 different areas of various sizes was done in the study of whether or not species richness increased with ecological succession‚ using the areas of vegetation growth as a benchmark for stages
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Code Division Multiple Access INTRODUCTION:- Mobile communications are rapidly becoming more and more necessary for everyday activities. With so many more users to accommodate‚ more efficient use of bandwidth is a priority among cellular phone system operators. Equally important is the security and reliability of these calls. One solution that has been offered is a CODE DIVISION MULTIPLE ACCESS SYSTEM. CDMA is one method for implementing a multiple access communication
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