Membrane Processing MEMBRANEFILTRATION A membrane or‚ more properly‚ a semipermeable membrane‚ is a thin layer of material capable of separating substances when a driving force is applied across the membrane. Membrane filtration enables to separate particles with a diameter smaller than the pore diameter in the membrane from the liquid feed‚ by applying a driving force (pressure) over the membrane. The membrane technology consists principally of Microfiltration (MF)‚ Ultrafiltration
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Advancement of Medical Research from HeLa Cells HeLa simply stands for Henrietta Lacks‚ a young mother in the 1951 who went to the doctor complaining of vaginal bleeding and discovered she had cervical cancer. Henrietta’s cells were taken for a biopsy and were found to be like nothing ever seen before; her cells were immortal. Her cancer cells double every 20 to 24 hours and have lived on for the past 60 years. Since HeLa cells were created‚ our world of modern medicine has been completely changed. We now
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substances across a semipermeable membrane to gain a better understanding of how cells move materials across cell membranes. The experiment was designed to exhibit Brownian Motion; the random movement and tendency of particles of a substance to move from an area of greater concentration to lower concentration via diffusion until equilibrium has been attained. In addition to observing the passive process of diffusion‚ the experiment demonstrated how a semipermeable membrane will only allow certain substances
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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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Neurons: The Basic Elements of Behavior Neurons‚ or otherwise called nerve cells‚ are the basic elements of our nervous systems. We have as many as one trillion nerve cells throughout our bodies. These cells are responsible for controlling our behavior. So what is a neuron? “A neuron is a nerve cell that is the basic building block of the nervous system. Neurons are similar to other cells in the human body in a number of ways‚ but there is one key difference between neurons and other cells
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Mirror Neurons are neurons that fires both when an action is being done by a person‚ animal‚ or thing and when the person or animal observes the same action performed by someone or something else. These neurons have been observed in primates. They act and “mirrors” the behavior of the other‚ as though the observer were doing the acting. Mirror neurons are considered to do many different things; it is said that they may be helpful for creating social understanding‚ giving us empathy as well as
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Experiment 5 Title: Membrane Permeability Objectives: 1. Define solvent‚ solute‚ solution‚ selectively permeable‚ diffusion‚ osmosis‚ concentration gradient‚ equilibrium‚ turgid‚ plasmolyzed‚ plasmolysis‚ turgor pressure‚ tonicity‚ hypertonic‚ isotonic‚ hypotonic; 2. Describe the effects of hypertonic‚ isotonic‚ and hypotonic solutions on Elodea leaf cells and onion scale leafs. Introduction: Membrane permeability is a quality of a cell’s plasma membrane that allows substances to pass in
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Topic Selection Microsoft recently unveiled its prototype‚ Surface‚ their version of a tablet or alternative device to a personal computer. It is questionable how Microsoft‚ a known software company‚ will be able to manufacture and sell a tablet device that is a contender in the marketplace against devices such as the iPad. Thesis: It is critical that Microsoft produce a device that overcomes the limitations of its competitors and adds features that set it apart‚ in order to define itself in
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Singapore Polytechnic School of Chemical and Life Sciences Basic Mathematics [MS2125] Active Learning Assignment Part I Submitted by: Yap Xin Yi (1416237) Yjasmin Yvette Morales Naquila (1452129) DCHE/FT/1A/06 Date of submission: 18 July 2014 Q1. Fill in the table below: (The table below is to help you in your brain-storming; you do not need to be specific or accurate at this stage‚ but try to think divergently.) (5 marks) What do we know about this problem? (i.e. what information is
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Statement of findings: Conclusion: The Transport Department of Govt. of NCT of Delhi is entrusted with the responsibility of providing an efficient public transportation system‚ control of vehicular pollution‚ registration of vehicles in Delhi‚ issuance of Driving licences‚ issuance of various permits‚ collection of road taxes. The department also entrusted in policy-making‚ co-ordination‚ implementation‚ monitoring and regulatory functions of all the Transport related aspects of National Capital Territory
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