Diffusion of responsibility is a pervasive socio-psychological phenomenon that is deeply entrenched in all societies. This tends to occur when the size of a group reaches a certain threshold and individuals within the group assume that others will take action or have already intervened‚ commonly resulting in the collective inaction by potential helpers. Another contributing factor is the gender of the individual in need for help which affects the action/inaction of the individuals in the group. The
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350 © IWA Publishing 2013 Journal of Water Supply: Research and Technology—AQUA | 62.6 | 2013 Behaviour of cyanobacterial bloom material following coagulation and/or sedimentation Lionel Ho‚ Albane Barbero‚ Jennifer Dreyfus‚ David R. Dixon‚ Feng Qian‚ Peter J. Scales and Gayle Newcombe ABSTRACT The global increase in detection of cyanobacteria and their metabolites has prompted greater emphasis in optimizing water treatment options for their effective removal. In particular
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Introduction A computerized simulation experiment will be conducted in order to study the cell transport mechanism via the cell’s selectively permeable membrane and passive processes of simple and facilitated diffusion. The plasma membrane is a gateway which allows nutrients to enter the cell and keep undesirable substances out‚ hence‚ making it selectively permeable. One method of transport is called active transport‚ which uses ATP to transport substances through the membrane. The other is
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|Course Code |Credit Hours |Introduction to Computers |Contact Hrs/Week |Total Periods Allocated | | |(Th-Pr) | |(Th-Pr) |(Th-Pr) | |CS 111 | | |2 - 2 |40- 40 | | |2 - 1 |
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because the lower the concentration of sugar the greater its water potential and consequently the faster the rate of osmosis. The results show that in each of the five sugar solutions‚ the rate of osmosis decreased with time. This happened because the difference in water potential between the inside and the outside of the beetroot time decreased as the experiment proceeded. Osmosis occurred most in distilled water because this contained the highest water potential when compared with the other beakers
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Introduction In chemistry‚ substances require a certain amount of energy in the form of average kinetic energy (temperature) to freeze. To reach the temperature a substance requires to freeze‚ it must lose a certain amount of heat energy (a form of energy transferred from one object to another‚ because of a temperature difference). When a substance reaches its freezing point and begins to freeze‚ its temperature remains constant until it is completely frozen. However‚ in order to melt a substance
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9/17/2013‚ Lois Andersen & Claire Ma “The Power of Osmosis” The purpose of the lab was to discover‚ through osmosis‚ the concentration of sugar water in a potato. First‚ potatoes were cut into strips about 3 centimetres in length and six strips were individually massed. Next‚ the six strips were placed in 6 different Dixie cups‚ labelled A‚ B‚ Q‚ X‚ Y‚ and Z. Each of the Dixie cups were then filled just enough to cover the potato strips‚ with substances that matched the letters of the cups
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A River About The poet Attipat Krishnaswami Ramanujan was an Indian playwright‚ folklorist‚ and poet author who wrote in both English and Kannada. Ramanujan ’s work shows that cultural tradition in India is a conflict between the colonial English identity and post-colonial ethnic identities. As a poet‚ he is known for his avant-garde approach and atavistic poetic arguments rather than innate genius. His major works include: Hymns for the Drowning‚ Speaking of Siva‚ and A River etc. In 1976‚
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Introduction In this experiment‚ I measured the impact of two different topical chemicals on growing bacteria over the course of a week. Bleach‚ water‚ hand sanitizer and hand soap were all variables used to observe the effects of the bacteria swabbed from my palm and fingers. Bleach has been the go to product for killing germs and it is because of the similar effects it has with high temperature on the proteins in bacteria. I hypothesized that bleach would be the most efficient way for killing the
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shows the higher the concentration of salt the higher the drop in mass. This happened because the potato slices in the 0% and 5% salt concentration became turgid which means it had swollen and became hard. This occurred because of the process called osmosis in which plant cells take up water and they start to swell‚ but the cell wall prevents them from bursting. Evaluation In my opinion the experiment was very successful‚ went according to plan and produced a lot of good results. The timing‚ weighing
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