An Introduction to Gas Exchange Lecturer: Sally Osborne‚ Ph.D. Department of Cellular & Physiological Sciences Email: sosborne@interchange.ubc.ca Useful link: www.sallyosborne.com Required Reading: Respiratory Physiology: A Clinical Approach‚ Shwarrtzstein & Parker‚ Chapter 5 (pp 95-100; 111112). Objectives 1. Distinguish between the following terms: minute‚ alveolar and dead space ventilation; and anatomic‚ alveolar and physiologic dead space. 2. Specify the partial pressures of CO2 and O2
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GAS CHROMATOGRAPHY EXPERIMENT The purpose of this experiment is for the student: 1) to learn the general theoretical aspects of gas chromatography as a separation method‚ 2) to learn how to operate gas chromatographs specific to COD‚ 3) to become familiar with using the gas chromatograph (GC) to qualitatively identify components of mixtures‚ 4) to be introduced to and to interpret the quantitative data available via gas chromatography‚ 5) to gain insight into how the GC technique is used
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Thomas Graham studied the behavior of the diffusion of gases of unequal densities when placed in contact with each other‚ using air as his control. He wanted to numerically prove how the diffusion of the gas volumes was inversely proportional to the value of the density of the gas‚ under constant temperature and pressure. The significance of this experiment was that in led to a reevaluation of the concept of the movement of matter‚ realizing that diffusion dealt with small immeasurable elements of
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Diffusion of innovation and persuasion Diffusion‚ What is it? “Diffusion is the process by which an innovation is communicated through certain channels over time among the members of a social system.” “Diffusion is a special type of communication concerned with the spread of messages perceived (or understood) as new ideas” 2 Main Elements of Diffusion 1. 2. 3. 4. An innovation Channels of communication The spread and speed of the idea over time The social network and individuals who
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Gas Exchange The process of gas exchange in the body is called respiration. This process has three basic steps that involve pulmonary ventilation‚ external respiration‚ and internal respiration. All three steps are functions that involve gas exchanges between the lungs and the atmosphere. For instance‚ pulmonary ventilation‚ or breathing involves the inhalation and exhalation of air between our lungs and the atmosphere. External respiration is the exchange of gases across the respiratory membrane
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LAB EXERCISE: Diffusion and Osmosis Laboratory Objectives After completing this lab topic‚ you should be able to: 1. Describe the mechanism of diffusion at the molecular level. 2. List several factors that influence the rate of diffusion. 3. Explain why diffusion is important to cells. 4. Describe a selectively permeable membrane‚ and explain its role in osmosis. 5. Define hypotonic‚ hypertonic‚ and isotonic in terms of relative concentrations of osmotically active substances. 6. Discuss
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Coefficient of Linear Expansion Introduction With few exceptions materials expand somewhat when heated through a temperature range that does not produce a change in phase (i.e. melting‚ freezing‚ boiling etc.). The added heat increases the average amplitude of vibration of the atoms in the material‚ which increases the average separation between the atoms. Although this effect is small‚ it is very important in any application that involves using different materials in an environment where they
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think about 1000 radial stations are required for a converged calculation. 2) The first plot is of a rotor with linear twist showing the lift coefficient variation with rbar in hover. The second plot is the lift coefficient max along the radius which looks to be about 1.2. The maximum thrust of the rotor in hover in terms of thrust coefficient is 0.0183. Cpo = 2.5668e-004 Cpi = 0.0020 Cpt = 0.0022 Cpideal = 0.0017 Fig Mer = 0.7832 MATLAB CODE: First Code: This
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therefore‚ it would take longer for a person to decide to call for help and the longer span of time taken can lead worse injuries and even the death of those involved in the accident. An experimental research study that would help test whether diffusion of responsibility is present
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Coefficient of Kinetic Friction Objective: After completing this experiment‚ you should be able to measure the coefficient of sliding friction of an object that is located on an inclined plane. Apparatus: Inclined Plane Pulley attachment for plane Wooden blcok‚ with hook attached Meterstick Felt Set of masses String Protractor Procedure: 1. Place the board in the position shown in Figure 7-1. 2. The angle of the board should be small enough so that the wooden block will not slide
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