Name two properties of this polymer. e) Name two uses for this type of polymer. 4. a) What is addition polymerisation? b) Polyethylene is an example of an addition polymer. Describe what happens to the ethene molecule during this process. c) The mechanism of addition polymerisation consists of three steps. Name each step and give a brief description of each. 5. a) What is condensation polymerisation? b) Where is condensation polymerisation
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Introduction: An oxygen sensor‚ or lambda sensor‚ is an electronic device that measures the proportion of oxygen (O2) in the gas or liquid being analyzed. It was developed by Robert Bosch GmbH during the late 1960s under supervision by Dr. Günter Bauman. The original sensing element is made with a thimble-shaped zirconia ceramic coated on both the exhaust and reference sides with a thin layer of platinum and comes in both heated and unheated forms. The most common application is to measure the
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Chronic Obstructive Pulmonary Disease (COPD)‚ as the name implies‚ is a long-term disease affecting the airways in the lungs. It can be further classified into chronic bronchitis or emphysema forms‚ the latter of which is associated with a history of smoking or smoke exposure. Common symptoms of COPD include progressive dyspnea and fatigue‚ which can be a major cause of disability‚ affect the patient’s activities of daily living‚ and reduce his or her overall feeling of health. There is no cure for
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Pulmonary Artery Catheterization Pulmonary artery catheterization is a procedure that is done to test blood movement through the heart and to monitor the heart’s function. In this procedure‚ a thin‚ flexible tube (catheter) is passed into the right side of the heart and into the main artery that carries blood from your heart to your lungs (pulmonary artery). The procedure may be done to evaluate or help diagnose various problems‚ such as: • Heart failure. • Shock. • Leaky heart valves (valvular
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Oxygen Exchange and Transport Oxygen exchange or respiration takes place at a respiratory surface; a boundary between the external environment and the interior of the body. Gas exchange is the process by which oxygen and carbon dioxide (the respiratory gases) move in opposite directions across an organism’s respiratory membranes‚ between the air or water of the external environment and the body fluids of the internal environment. Oxygen is needed by cells to extract energy from organic molecules
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Defending the Lung From Injury Charlotta McMurphy Respiratory Procedures 3 September 12‚ 2011 Acute lung injury and acute respiratory distress syndrome seem to be more common these days as people have surgery or simply a medical patient in seeing a doctor. As we study and are learning about ALI and ARDS it seems people have a much longer survival rate than years ago. The technology‚ doctors and scientists have improved the outcome for people who have ADRS and ALI. We continue to make advancement
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properties of an element and cannot be broken down into smaller parts. Molecules are formed when two or more atoms are combined. This formation can happen in a variety of ways. When two oxygen atoms join O2 is formed‚ and when three oxygen atoms join O3 or ozone is formed. Both of these have different properties. Different atoms can also combine to form molecules. Hydrogen combines with sulfur to form H2S and hydrogen and oxygen also combine to form H2O. Dmitri Mendeleev’s Periodic table is
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Oxygen sensor invention could benefit fisheries to breweries | MSU News... 1 of 1 http://news.msu.edu/story/9168/ News Site Oxygen sensor invention could benefit fisheries to breweries Contact: Layne Cameron‚ University Relations‚ Office: (517) 353-8819‚ Cell: (765) 748-4827‚ layne.cameron@ur.msu.edu Published: April 04‚ 2011 E-m ail Editor ShareThis EAST LANSING‚ Mich. — Monitoring oxygen levels in water has applications for oil spills‚ fish farming‚ brewing beer and more
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are hypertensive heart disease‚ coronary heart disease and heart failure. What is a respiratory disease? Respiratory disease is a class of diseases that involve every part of the lungs including the nerves and muscles of the lungs. Some of the respiratory diseases are pneumonia‚ pulmonary embolism‚ and lung cancer. Hypertensive heart disease Cause Hypertensive heart disease is caused by the arterial hypertension or high blood pressure that affects the heart. Symptoms
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Tyrian Reed Chemistry 1st Period The History Of Oxygen Oxygen is a chemical element with symbol O and atomic number 8. One of the first known experiments on the relationship between combustion and air was conducted by the 2nd century BCE Greek writer on mechanics‚ Philo of Byzantium. Many centuries later Leonardo da Vinci built on Philo’s work by observing that a portion of air is consumed during combustion and respiration. In the late 17th century‚ Robert Boyle proved that air is necessary
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