stimulation (tDCS) is a noninvasive neuromodulation technique that is safe and inexpensive. The mechanisms of tDCS include the transmission of a consistent‚ low electric current through the scalp through two electrodes‚ the anode and the cathode. The anode is the positively charged electrode that has the ability to stimulate neuronal activity while the cathode inhibits brain cell activity. Rather an invoking the action potentials in neurons by changing the magnetic fields over the scalp like what
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APPLICATION OF CHEMICAL SENSORS IN MECHANICAL ENGINEERING A chemical sensor is a device that transforms chemical information‚ ranging from the concentration of a specific sample component to total composition analysis‚ into an analytically useful signal. The chemical information‚ mentioned above‚ may originate from a chemical reaction of the analyte or from a physical property of the system investigated. Chemical sensors its application in various fields of engineering like civil‚ environment‚ medical
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Gel Electrophoresis Lab SBI4U1 May 13th‚ 2013 Gel Electrophoresis Lab Purpose: The purpose of this lab is to learn how restriction enzymes cut DNA molecules at specific sequences‚ thus producing DNA fragments of various lengths. Students learn how fragments form unique patterns‚ which help to distinguish the base for DNA identification. This lab answers the question “whose DNA was left behind?”. Materials: * Transfer pipets * Agarose Gel * Dyed DNA samples *
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Cardiac Pacemakers The heart is bestowed with a specialized system that automatically generates rhythmic control via the sinus node‚ located in the superior lateral wall of the right atrium near the opening of the superior vena cava. The specialized pacemaker cells dictate control of the rest of the heart through regular electrical impulses that propagate from the right atria to the lower ventricles. The rapid conduction of these impulses cause the muscle cells of the atria to contract
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the silent gap would occur. Gaps and other prestartle stimuli (prepulse inhibition) have been previously used in laboratory animals and humans as an audiometric tool to quantify features of the acoustic environment that a subject can detect(Bauer et al.‚ 1999; Li et al.‚ 2013). More salient prestartle stimuli‚ including gaps‚ inhibit the startle response to a greater degree than less salient stimuli. When an animal effectively detects a silent gap embedded in the acoustic background‚ its subsequent
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Riyadh Mohammed Ali Hamza‚ Abdulkareem Aloraier‚ Emad Abdulradh Al-Faraj INVESTIGATION EFFECT OF WELDING POLARITY IN JOINT BEAD GEOMETRY AND MECHANICAL PROPERTIES OF SHIELDED METAL ARC WELDING PROCESS INVESTIGATION EFFECT OF WELDING POLARITY IN JOINT BEAD GEOMETRY AND MECHANICAL PROPERTIES OF SHIELDED METAL ARC WELDING PROCESS Riyadh Mohammed Ali Hamza‚ Abdulkareem Aloraier‚ Emad Abdulradh Al-Faraj ABSTRACT- The aim of this paper is to study the effect of welding polarity of the shielded
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Investigatory Projects in Physics | Repulsorlifts as a Method of Stable Magnetic Levitation | Repulsorlifts were used in the study to find out if they can be used to replace the wheels of a conventional car. It was hypothesized that it will be able to lift a car using magnetic repulsion forces. The different magnets were tested individually with the usual tests for magnetic strength‚ size‚ and temperature increase‚ which were done in the preliminary testing. The prototype road and car were
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Smart solutions overview of street light system in TI grounding system There are many of electrical equipment which can be accessed by the public; however‚ some of them cannot be physically controlled by the operator. One of them is street light system which needs to be protected in order to prevent shock hazards under the fault conditions. Generally‚ street lighting systems are distributed in a large area including urban and sub urban. If fault happens‚ the metal case of these systems might raise
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electromyogram (EMG). As the lab began‚ students were to divide into groups and choose a person who would have their muscle activity recorded as the lab went on. Group participants attatched electrodes to the group’s chosen test subject‚ then recording leads‚ connected to the iWorx box‚ were attatched to the electrodes. After being hooked up to the machinery and computer‚ the lab proceeded with flexing and extending of the wrist while the machine recorded the muscle activity and the computer screen provided
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CHAPTER ONE INTRODUCTION A. STATEMENT OF THE PROBLEM This study aims to find out how long a lemon (Citrus limon) can last as a lemon battery powering a digital clock. B. HYPOTHESIS The researcher assumes that one lemon would last for a day or two and that the usage of more lemons would entail a longer battery time. C. OBJECTIVES Specifically‚ it aims to: 1) come up with a quantity-longevity ratio with the use of a varied quantity of lemons in the production of a lemon battery 2) find
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