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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.
Spray-drying method Spray-drying is the common drying method in the production of ISP. The primary physical form of ISP in commerce, is that of fine powders. Structured form
C omp uted tomography: Computed tomography (CT imaging) is also known as CAT (computed axial tomography) scanning and it is based on the X-ray principle. The CAT sc
What is the chemical equation of photosynthesis? The chemical equation of photosynthesis is the following: 6 CO 2 + 6 H 2 O + light --> C 6 H 12 O 6 + 6 O 2
Q. What is Chemical disinfection? Chemicals are added to waste to kill or inactivate the pathogens it contains, this treatment usually results in disinfection rather than steri
Explain the Occurrence of vitamin B 2 Vitamin B 2 (riboflavin) occurs in nature almost exclusively in a combined form i.e. esterified with phosphoric acid as riboflavin-5'-ph
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Give an introduction to intensive care ? Intensive Care Medicine has its origins from the polio epidemic of 1952 in Copenhagen. Patients who suffered respiratory paralysis were
what is proteins?properties of protein
Explain some Feeding Considerations or Nutrition Support? The preferred route for feeding the patient should be oral intake1 via the utilization of gastrointestinal tract. If o
Genetics Genetics is the study of heredity. It is an ancient discipline. At least 4000 years ago, in Sumeria, Egypt and other parts of the world, farmers recognized that they
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