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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.
Floral Induction The transformation of vegetative apex into a floral apex is a multifactor and multistep phenomenon. Despite researches on flowering carried out during the las
Q. What Treatment should be used for cardiac tamponade? Percutaneous Pericardiocentesis Cardiac tamponade is an acute emergency and percutaneous pericardiocentesis must b
Tracheal system in cockroach Cockroach belongs to phylum Arthropoda under invertebrate. They have specially developed tracheal system for respiration The system consis
Determine the Steps for Withdrawing the Insulin The important thing about measuring a dose is to use the front of the plunger not the back - Check doctor's prescription.
Gaseous Exchange Gaseous exchange is take place on by both mantle and the gills. The gills of most bivalves are highly changed for filter feeding. They are derived from the pr
Categories of alloplastic implant materials The entire groups of possible alloplastic implant materials, regardless of their clinical applications fall into the following categ
General Protocol for Media Preparation A general protocol for media preparation is as follows: 1. Prepare stock solutions one day before the medium is to be made. 2. Wei
A classic study of extrasensory perception tests the ability of one person to read another's mind. The test uses five cards with different designs, all known to both participants.
Insulin Concentrations The doctor always prescribes insulin dosage in units. Thus all types of insulin (crystalline, NPH, Lente, and so forth) is available in 10-ml vials that
Explain about the supply curve or supply schedule. The supply curve or schedule shows the total quantity of a good or a service supplied within aggregate, by whole sellers or f
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