metoda zderzeniowa
English translation: impact method
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| 12:40 May 7, 2018 |
| Polish to English translations [PRO] Science - Biology (-tech,-chem,micro-) | |||||||
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|  Selected response from: Frank Szmulowicz, Ph. D. United States Local time: 00:15 | ||||||
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| 3 +1 | impact method |
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Answers
3 mins confidence: 
peer agreement (net): +1
peer agreement (net): +1impact method Explanation: Propozycja. . A – metoda sedymentacyjna / sedimentation method, B – metoda zderzeniowa / impact method. http://medpr.imp.lodz.pl/Mikrobiologiczna-jakosc-powietrza-w... -------------------------------------------------- Note added at 6 mins (2018-05-07 12:47:29 GMT) -------------------------------------------------- metoda zderzeniowa impact method metoda sedymentacyjna sedimentation method. Rys. 2. Oczekiwane średnie brzegowe liczby bakterii (jtk·m–3) w http://yadda.icm.edu.pl/yadda/element/bwmeta1.element.baztec... -------------------------------------------------- Note added at 18 mins (2018-05-07 12:59:39 GMT) -------------------------------------------------- cccccccccc N.1 – Principle of microbial air sampler by impact method on agar plate Air containing microbe-carrying particles is aspirated and accelerate through a hole and direct towards a nutrient agar surface of a plate. As the air turns away from the agar surface, the microbe-carrying particles that cannot follow the flow are impacted. The plate containing nutrient agar is then incubate at a suitable time and temperature, and the resulting Colony Forming Units (CFU) are counted to evaluate the number of microbe-containing particles collected from a specific volume of air. How the microbe-carrying particles impact on agar surface The aspirated air passes through an intake orifice of the sampler head at a velocity of “U” and, as it approaches the agar surface, it turns. The arc of the turning circle has a radius of “r” which is assumed to be the same as the radius of the intake nozzle. The velocity round the curve is assumed to be “U”. The microbe-carrying particle travels along the streamline and experiences a centrifugal force that causes it to move toward the agar surface of the plate. http://www.triobas.com/microbiological-air-sampler/applicati... cc Metoda zderzeniowa polega na przepuszczeniu próbki powietrza przez szczeliny lub otwory, nadające mu prędkość wystarczającą do wydzielenia zanieczyszczeń podczas uderzenia o powierzchnię pożywki znajdującej się na specjalnej, dostosowanej do miernika płytce podobnej do płytki Petriego, np. płytce typu Rodac. Następnie zainfekowaną pożywkę poddaje się inkubacji i zlicza liczbę kolonii. http://www.tchik.com.pl/archiwum/2007/4/KontrolaCzystosci_KA... |
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