lab‚ we will put blackworms into the Nicotine to look at the differences in pulse rates when compared to a control. The proper name for blackworms is Lumbriculus Variegatus‚ they are freshwater worms most commonly found in North America and Europe. The blood in blackworms circulates from the dorsal blood vessel toward the head through a series of rhythmic contractions. A common pulse rate for the blackworm is 7 to 8 pulse/minute. Hypothesis- If a stimulant increases heart rate‚ then when the Lumbriculus
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World of Ideas 1 Professor Dotterman Essay # 2: Science Mohammad Yonis Science Originally‚ I always imagined science to be a fact-based subject. I believed there was no second guessing science. That everything was proven by trial and error using the scientific method. After thoroughly investigating science and its’ process‚ I have completely changed my views on it. Now I feel scientist do not care about humans and the environment
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testing. It made the discovery of Insulin possible‚ which has proven to be absolutely crucial to the survival of diabetics‚ and‚ according to the World Health Association‚ animal testing has also led to the discovery of the polio vaccine which took the worldwide occurrence of polio from 350‚000 cases in 1988 to just 223 cases in 2012. In addition to these life-changing advancements‚ animal testing also provided us with pacemakers‚ cardiac valve substitutes‚ anesthetics‚ organ transplants‚ and the list
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intended to hire people that were jobless in that local area. Eleanor Roosevelt did all of these things while Franklin Roosevelt was president and this shows that “Behind every great man is a great woman”. Works Cited Berish‚ Amy. “FDR and Polio”. Franklin D. Roosevelt.10 October‚ 2013. www.fdrlibrary.marist.edu/aboutfdr/polio.htm. Ember‚ Steve and Shirley Griffith. “Eleanor Roosevelt”. Learning English. 10 October‚ 2013. . George Washington University. “The Eleanor Roosevelt papers
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telecommunication links but also used in the Internet and Local area networks (LAN) to achieve high signaling rates. What is fiber optic communication? Fiber-optic communication is a method of transmitting information from one place to another by sending pulses of light through an optical fiber. The light forms an electromagnetic carrier wave that is modulated to carry information. Electrical signal Optical Transmitter Signal input Optical channel Optical Receiver Electrical signal
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its muscular walls. Blackworms have bright‚ red blood because of the presence of a hemoglobin-like pigment‚ erythrocruorin‚ which transports oxygen. Because the body wall of the worm is transparent‚ the blackworm’s pulse is visible as the dorsal
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your data using the tables below. Using your own words‚ answer the following questions. Pulse Measurement: Observations: Data Table 1. Pulse Location Pulse Rate (beats/min) Radial 68 beats/min Carotid 76 beats/min Popliteal 60 beats/min Data Table 2. Radial Pulse Pulse Rate (beats/min) Sitting 68 beats/min Standing 84 beats/min Post Exercise 104 beats/min 1. What is the definition of a single pulse? —A pressure wave in an artery caused by the successive contractions of the heart. 2.
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Introduction The experiment aimed to establish a correlation between caffeine intake and the effects it has on both the pulse and respiration rates of an individual after undergoing moderate-intense cardiovascular exercise. Caffeine itself is one of the most heavily consumed drugs on the planet; it is estimated that over 90% of Americans consume caffeine daily (Richard Lovett‚ 2005‚ New Scientist iss. 2518) and is the most widely used stimulant in the world (Arcerio‚ P‚ Ormsbee‚ J‚ 2009‚ pg. 1)
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begin our exploration of wave interference‚ consider two pulses of the same amplitude traveling in different directions along the same medium. Let’s suppose that each displaced upward 1 unit at its crest and has the shape of a sine wave. As the sine pulses move towards each other‚ there will eventually be a moment in time when they are completely overlapped. At that moment‚ the resulting shape of the medium would be an upward displaced sine pulse with an amplitude of 2 units. The diagrams below depict
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very less as compared to that of conventional welding process. The mode of welding process is governed by the process parameters like laser energy‚ pulse duration‚ pulse frequency‚ power and welding speed. This paper aimed at to examine the influence of welding speed and power on weld bead geometry and performance parameters such as duty cycle‚ pulse overlap‚ energy density and bead diameter. In this contest‚ first experiment is conducted on austenitic 304L stainless steel sheet by varying the
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