Design of various types of Patch Antenna for WLAN Application Presented By: Monica Gupta Deptt. of Electronics & Communication Engineering Raj Kumar Goel Institute of Technology‚ Ghaziabad ABSTRACT In this project‚ High Frequency Structure Simulator (HFSS) is used to design Linearly Polarized Rectangular Microstrip Patch Antenna. The aim of the project is to design and fabricate various Microstrip Antenna using different feed techniques and
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an infection and subsequent illness‚ or that between the instant of stimulation and the beginning of response. 2. What is the role of acetylcholine in a skeletal muscle contraction? Acetylcholine is the chemical signal the nerve sends to the muscle to cause contraction 3. Describe the process of excitation-contraction coupling in skeletal muscle fibers. ACH is released at the end-plate potential. ACH diffuses into the sarcolemma‚ attaches to the receptors in the motor end plate and causes a change
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regulated by hormones from the endocrine system. D) A and B are correct. E) A‚ B and C are correct. 4) Cardiac muscle A) is found in the walls of blood vessels and in the heart. B) is largely under voluntary control. C) is striated. D) contraction is dependent on stimulation by the nervous system. E) is unaffected by hormones. 5) Smooth muscle A) is largely under voluntary control. B) is located in the coverings of solid organs. C) is striated. D) moves blood through the heart
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Michelson-Morley experiment. Given that: [pic]‚ [pic]‚ [pic]‚ and [pic]. 3. State the fundamental postulates of Einstein special theory of relativity and deduce from them the Lorentz Transformation Equations . 4. Explain relativistic length contraction and time dilation in special theory of relativity? What are proper length and proper time interval? 5. A rod has length 100 cm. When the rod is in a satellite moving with velocity 0.9 c relative to the laboratory‚ what is the length of the rod
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of spontaneous contractions and the response to stimulating the nerves at 20 Hz with both a voltage that produced only a modest response and the voltage that produced the maximal response. 1) Briefly describe the response of the ileum when it is unstimulated and during stimulation of the nerves. It is shown that the rabbit ileum has a constant rate of contractions and relaxations‚ when it is not stimulated. However there is a significant drop in the amplitude of the contractions‚ when the ileum
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change in contractions during different levels of stimulation and inhibition‚ such as that from different voltages and alpha/beta blockers. A. RESPONSES TO NERVE STIMULATION Figure 1.0 Spontaneous contractions of rabbit ileum at 20Hz. Figure 1‚1 Contractions of rabbit ileum at 20Hz‚ with a stimulation of 2V applied to produce a moderate reaction. Figure 1.2 Contractions of rabbit
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Textbook: Neural Reflexes * all neural reflexes begin with stimulus that activates sensory receptor * receptor sends info in form of AP through sensory neurons to CNS * CNS: integrating center that evaluates all incoming info and selects appropriate response * Initiates AP in efferent neurons to direct response of muscles or glands (effectors) * Negative feedback: * Feedback signals from muscle or joint receptors keep CNS continuously informed of changing body position
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1. Consider the equation F = DP/R. It describes the flow (F) of fluid in a tube in which there is a pressure difference (DP) between the two ends and a resistance (R) to flow. The equation indicates that(2.0 Score ) A.the flow of fluid from point A to point B in a tube depends upon the difference in pressure between A and B. B.the flow of fluid in a tube depends upon the absolute pressure at the beginning of the tube. C.the greater the resistance to flow in a tube‚ the greater the flow for any
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apply to all physiological processes Physiological Processes Chemical & Physical Laws Rooted in the laws of physics & chemistry Nerve conduction‚ action potentials & ionic currents Gas exchange Animal locomotion and blood flow Muscle contraction and limb movement Anabolic and catabolic metabolism What is Animal Physiology? (continued) Animal Physiology includes behavior‚ ecology‚ anatomy‚ evolution‚….. Sub-disciplines of animal physiology Cellular Comparative Environmental
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AP?: no nerve response What is the effect of lidocaine on eliciting an AP?: Blocks sodium ion channels from opening‚ inhibiting AP. What is the equation for Fick’s First Law of Diffusion?: J = -DA△ｃ/△ｘ What is the key variable in an isometric contraction?: muscle length What is the relationship b/w size of a nerve and conduction velocity?: The larger the nerve‚ the faster the conduction velocity. What is the role of hypothalamus in the production of thyroxine & TSH?: It is a primary endocrine
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