fluorophore excitation. This is important when we consider that the pinhole rejects signal photons emitting from the focus that are scattered on their way out of the tissue; thus‚ deep in tissue‚ confocal microscopy becomes unacceptably wasteful in terms of signal photons. Compensating for signal-loss with increased fluorescence excitation‚ confocal imaging leads to more phototoxicity and photobleaching. Therefore‚ experiments deeper in tissue benefit from two-photon excitation. The excitation wavelengths
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Anatomy & Physiology I Course Review for Final Review: 1. The Levels of Organization: Chemical Level: atoms (elements) >>>> molecules (two or more chemicals together) Cellular Lever: individualized (specialized cells) Tissue Level: tissues (groups of cells and materials surrounding them) Organs Level: different tissues that join together as a structure for a specific function System Level: related organs with a common/synergistic function Organism Level: a living
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SYNCMTR1 Synchronous Motor Characteristics Copyright 2004 Kilowatt Classroom‚ LLC. Synchronous Motors are three-phase AC motors which run at synchronous speed‚ without slip. (In an induction motor the rotor must have some “slip”. The rotor speed must be less than‚ or lag behind‚ that of the rotating stator flux in order for current to be induced into the rotor. If an induction motor rotor were to achieve synchronous speed‚ no lines of force would cut through the rotor‚ so no current would
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The Software is the Instrument NATIONAL INSTRUMENTS Application Note 065 ® ® Measuring Temperature withThermistors – a Tutorial David Potter Introduction Thermistors are thermally sensitive resistors used in a variety of applications‚ including temperature measurement. This application note discusses this application of thermistors‚ including basic theory and how to interface thermistors to modern data acquisition systems. Thermistor Overview A thermistor is a piece of semiconductor
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CLASSIFICATION OF VIBRATION Vibration can be classified in several ways. Some of the important classifications are as follows. • Free Vibration. If a system‚ after an initial disturbance‚ is left to vibrate on its own‚ the ensuing vibration is known as free vibration. No external force acts on the system. The oscillation of a simple pendulum is an example of free vibration. • Forced Vibration. If a system is subjected to an external force (often‚ a repeating type of force)‚ the resulting vibration
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“SMART MATERIALS” ABSTRACT The world has undergone two materials ages‚ the plastics age and the composite age‚ during the past centuries. In the midst of these two ages a new era has developed. This is the smart materials era. According to early definitions‚ smart materials are materials that respond to their environments in a timely manner. The definition of smart materials has been expanded to materials that receive‚ transmit or process a stimulus and respond
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Chapter (11) Synchronous Motors Introduction It may be recalled that a d.c. generator can be run as a d.c. motor. In like manner‚ an alternator may operate as a motor by connecting its armature winding to a 3-phase supply. It is then called a synchronous motor. As the name implies‚ a synchronous motor runs at synchronous speed (Ns = 120f/P) i.e.‚ in synchronism with the revolving field produced by the 3-phase supply. The speed of rotation is‚ therefore‚ tied to the frequency of the source. Since
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Histo Review 1. nCAM - to block migration of neurons (it’s an antibody) 2. KNOW RBC’S EVERY STAGE‚ BRS p. 137 3. know zona glomerulosa‚ fasiculaa etc. secretions 4. in the anterior pituitary‚ know acidophils vs. basophils 5. if a drug is applied after S phase…. Stops G2 6. dynein arms have ciliary movement 7. kinesin- for fast axonal transport 8. apocrine sweat gland duct is what cell type? Simple cuboidal? 9. medial meniscus needs synovial fluid from neighboring synovial joint 10. know
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1. INTRODUCTION Generally when most people think about electronics‚ they may initially think of products such as cell phones‚ radios‚ laptop computers‚ etc. others‚ having some engineering background‚ may think of resistors‚ capacitors‚ etc. which are the basic components necessary for electronics to function. Such basic components are fairly limited in number and each having their own characteristic function. Memristor theory was formulated and named by Leon Chua in a 1971 paper. Chua
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Print Form E X E R C I S E 6 Frog Cardiovascular Physiology O B J E C T I V E S 1. To list the properties of cardiac muscle as automaticity and rhythmicity‚ and to define each. 2. To explain the statement‚ “Cardiac muscle has an intrinsic ability to beat.” 3. To compare the relative length of the refractory period of cardiac muscle with that of skeletal muscle‚ and to explain why it is not possible to tetanize cardiac muscle. 4. To define extrasystole‚ and to explain
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