1.5.2.5 Detectors The detectors used in UPLC should be able to handle very fast scanning methods because half-height peak widths of less than one second are usually obtained with columns packed with 1.7 µm particles. The detector must be able to give high sampling rate adequate to capture enough data points across the peak for an accurate and reproducible integration of analyte peak. The dispersion (volume) of the detector flow cell must be minimal to maintain separation efficiency. Conceptually
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extract a metal Industrial mineral- either has some direct practical use‚ or take part in some industrial process Gems and precious stones are an exception to industrial metals as they do have a direct ‘practical’ application but are dealt with separately. Some common minerals include: * * Silica- (silicon dioxide) most common mineral on earth * Calcite- (calcium carbonate) main mineral in limestone and marble Ore: A naturally occurring solid material from which a metal or valuable
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Metals & Non-Metals Metals: Good conductors of heat and electricity. Have shining luster. Malleable (this means that they can be hammered or distorted). Ductile (this means that they can be drawn into wires). Most have high melting and boiling points. Are sonorous (give out sound when beaten). Usually solid at room temperature. An exception to this is mercury‚ which is liquid in nature. Examples: Aluminum‚ Gold‚ Copper‚ Silver‚ Sodium‚ Potassium‚ Mercury. Corrode or oxidize in
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INVISIBLE BROKEN WIRE DETECTOR 1 1. INTRODUCTION In our day to day life we are dealing with electricity as well as so many electrical equipments. In this electrical equipment the household appliances play a major role. So the fault occurring with them is also a major problem. Generally the fault seen is the breaking of wire inside the two layer or three layer cables or the short circuit between them. Portable loads such as video cameras‚ halogen flood lights‚ electrical irons‚ hand drill
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MATERIALS : METALS AND NON-METALS Y Iron Coal ou are familiar with a number of materials like iron‚ aluminium‚ copper‚ etc. Some materials have been given in Table 4.1. Table 4.1 : Appearance and Hardness of materials Object /Material Appearance Hardness (Shiny/Dull) (Very hard/ Not very hard) similar change if we try to beat a wood log ? Let us find out. Activity 4.1 Take a small iron nail‚ a coal piece‚ a piece of thick aluminium wire and a pencil lead. Beat the iron nail with
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Lie detector is basicly the sidekick of the twenty first century. Lie detectors tell the truth 80-90% of the time. it was not until 1914 and 1915 when the first lie detector came out and that was many years ago so they would have innovated it to make it more reliable.Lie detectors work by measuring breathing‚ pulse‚ and galvanic skin response. Lie detector is basicly the sidekick of the twenty first century. Lie detectors tell the truth 80-90% of the time. It was not until 1914 and 1915 when
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Khadijah Sabir Smoke Detector essay One of the most effective ways to protect yourself and your family from a fire is to install smoke detectors in your home. Unfortunately many people don’t take advantage of the protection that smoke alarms provide. Smoke alarms can warn you of a fire when you are asleep‚ busy or in a different part of the house from where the fire is. Did you know that the National Fire Protection Association (NFPA) urges replacing home smoke alarms after 10 years? As leaders
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“Liar!” How do we know? Can you guess? We use a lie detector. Lie detector tells us if people are lying. Sometimes we can automatically tell and sometimes we can’t‚ that’s when we use the lie detector. Lie detectors have 95% accuracy and are mostly reliable‚ but they are the easy to cheat. Can we trust lie detectors to do all the work? Maybe‚ some are more accurate than others. Lie detectors aren’t completely accurate‚ but they’re accurate enough to trust (Prusher 1). Can they betray themselves
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Extraction of metals The History of Metals. Metals have been used by people for many thousands of years. Gold and silver‚ found as native metal‚ were used both as jewellery and as a status symbol - nothing new there. These metals were known in the Stone Age‚ but gold and silver are too soft to be used as tools. The first really useful metal to be discovered was bronze. This began the Bronze Age. Bronze was used extensively for tools and weapons in Asia and Africa from 4‚500 B.C. (6‚500 years
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know how important a radar detector can be. These tiny devices can greatly reduce your chance of getting pulled over for speeding but do you know how they work? It is one of the technological advances that we seem to take for granted. Most of us have no clue beyond plugging them into the cigarette lighter and mounting them on the dashboard. But are they legal? How do they work? Those are just a few of the questions that you should have when it comes to radar detectors. This is your lucky day.
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