1.0 Wavelength-division Multiplexing Technology 1.1 Wavelength-division Multiplexing In fibre optic telecommunications‚ wavelength-division multiplexing (WDM) is a technology which multiplexes multiple optical carrier signals on a single optical fibre by using different wavelengths (colors) of laser light to carry different signals. This allows for a multiplication in capacity‚ in addition to making it possible to perform bidirectional communications over one strand of fiber. (Tomlinson & Lin
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Information Processes and Technology Aldain Austria 12IPT – Mrs Petrovich CONTENTS PAGE Table of ContentsTable of Contents Problem definition3 Requirements report3 Current network investigation5 Current Network Documentation5 Current Network Explanation6 Cables6 Network Nodes6 Servers7 Possible Solutions12 Solution 1 – WIRED12 Solution 2 – WIRELESS 14 Solution 3 – HYBRID 16 Recommendation18 Justification18 Implementation20 Cost Estimate20 Rollout21 Problem definitionThe situation
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signal attenuation: Fewer repeaters – RESISTANCE: Greater resistance to electromagnetic noise such as radios‚ motors or other nearby cables. – MAINTENANCE: Fiber optic cables costs much less to maintain – Security • Extremely difficult to tap a fibre as it does not radiate energy that can be received by a nearby antenna. circulation to Trainees only For Why Fiber ? – Security - Being a dielectric • It cannot cause fire. • Does not carry electricity. • Can be run through hazardous areas.
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compared. In the IAD-diagnosed teenagers‚ the scientists found evidence of disruption to ’white matter’ nerve fibres connecting vital parts of the brain involved in emotions‚ decision making‚ and self-control. A measurement of water diffusion called ’fractional anisotropy’ (FA) was used which provides a picture of the state of nerve fibres. Low FA was an indicator of poor nerve fibre structure. The researchers‚ led by Dr Hao Lei from the Chinese Academy of Sciences in Wuhan‚ wrote in the online
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Medication for Heartburn - 8 Natural Alternatives To Use Instead By Kim Brown Nov 27‚ 2010 Heartburn or acid reflux has a number of different symptoms but it is mainly known for creating a burning sensation and distinct discomfort in the upper chest area. If you are experiencing this problem‚ it should not be ignored. Even though there is no shortage of heartburn medications that can be taken to relieve the symptoms‚ there are also many safe‚ effective and natural solutions to manage and help to
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in the arteries * Trans fat intake – contributes to build up of LDL cholesterol by reducing production of HDL cholesterol * Sodium intake - increases blood pressure and results in hypertension Nutritional protective factors: * High fibre intake - assists in regulating cholesterol levels (by binding to LDL cholesterol to prevent build up in arteries) which reduces the risk of cardiovascular disease * Omega-3 and omega-6 fatty acids – lowers LDL cholesterol and improves blood vessel
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Science 9 Chapter 5.1 The Cell Cycle and Mitosis Pg152-158 Notes Cell Replacement and Development -Cells continue to divide as you continue to grow. -Muscle & nerve cells usually do not continue to divide in adult. The Cell Cycle -Life of cell = divided into 3 stages called cell cycle. -Stages = Interphase‚ Mitosis and Cytokinesis -Interphase= cells carry out functions necessary for survival and cells that divide prepare for reproduction. -Mitosis divides duplicated contents of cell’s nucleus
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cancers‚ stroke‚ heart disease and helps you to keep a healthy weight. Food has a few different types of nutrients‚ such as: carbohydrates‚ proteins‚ fats‚ vitamins and minerals. Another important element of our diet is fibre. Fibre isn’t classed as a nutrient‚ but fibre can help to control our blood cholesterol levels. In a healthy diet there are many different food groups: starchy foods‚ milk and dairy products‚ protein foods‚ fruit and vegetables‚ foods high in fat and sugar. It is very important
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CHEMICAL INDUSTRY The chemical industry comprises the companies that produce industrial chemicals. It is central to modern world economy‚ converting raw material (oil‚ natural gas‚ air‚ water‚ metals‚ and minerals) into more than 70‚000 different products. The chemical industry is a key contributor to the world economy. It is a knowledge-based industry with significant investments in R&D. The industry supplies to virtually all sectors of the economy. In terms of consumption‚ the chemical industry
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By: Dr.R.Suresh Kumar‚ Chartered Engineer Introduction: Coir is a natural fibre extracted from the husk of the coconut. Among the natural fibre‚ coir has some unique characteristic particularly its rigidity‚ durability and friction. Coir Industry in India is one of the important rural industries. Although the coir industry has traditionally been associated
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