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Scanning Electron Microscopy (SEM)While 'TEM is useful to study the internal structul-c of thc ccll. SEM is an important technique if you wish to examine the surl'ace features of the specimen. Moreover, a specimen can be viewed at different angles. The resolving power of a SEM is lower than that of a TEM since a resolution of only about 3.0 nm can be attained hy SEM.In a SEM, a low energy beam of electrons (primary electrons) strikes the surface of a specimen. This causes the emission of the secondar!, electrons from the specimen which are gathered by a photonlultiplier tube to form an image which is built up line by line as in the case of television. The image forlncci by SEM has a three-dimensional appearance. Unlike -in a TEM, the electrons in a SEM do not pass through the specimen.
List and briefly describe the mechanisms that prevent acid-base imbalances from appearing in the body. In addition, indicate where each mechanism functions most significantly.
(i) Effect on Human Health: Air pollution causes many respiratory problems in human being. (1) Dust, soot and smog causes several respiratory troubles such as bronc
Explain the Meaning of Transfer of Culture Transfer of culture can be done from one liquid media to another liquid media or from liquid to solid media or vice versa. The steps
Explain the Occurrence of vitamin B 6 Vitamin B 6 activity is attributed to the 3 compounds-pyridoxol (pyridoxine), pyridoxal and pyridoxamine, generally comprised in the vit
canal system in porifera
State the Diagnosis and prevention of VIBRIO PARAHAEMOLYTICUS Diagnosis: Diagnosis of gastroenteritis caused by this organism is made by culturing the organism from the diarrh
What is Splitin first heart sound ? In complete RBBB, due to delay of tricuspid closure, the split is wide. In complete LBBB, due to delay of mitral closure the S I is single.
Airway Management To improved ventilation, suctioning, IPPB, Ultrasonic mist therapy and postural drainage with clapping and vibrating are all employed to halt the progress o
Q. Which kind of polarity do fat-soluble and water-soluble substances respectively have? Ans. Water-soluble substances are behave as polar molecules, i.e., they have e
Explain Supravalvular aortic stenosis murmur? Supravalvular Aortic Stenosis Murmur : Characteristic: Murmur may be loudest in 1st Right ICS. It isn't associated with systolic
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