Scanning Electron Microscopy (SEM) Investigation Of Selected Desensitising Agents In The Dentine Disc Model

2001 ◽  
Vol 27 (1) ◽  
pp. 24-24 ◽  
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Disc Model ◽  
Sem Investigation ◽  
Scanning Electron

scholarly journals Exomorphic Characters of Seeds of Some Species of Capparaceae Family in Taif, KSA

2019 ◽  
pp. 1-7
Author(s):  
Hatim M. Al-Yasi
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Seed Coat ◽  
Seed Shape ◽  
Specific Level ◽  
Coarse Texture ◽  
Wide Range ◽  
Capparis Decidua ◽  
Sem Investigation ◽  
Scanning Electron

Seed exomorphic characters of six species belonging to four genera of family Capparaceae were studied using light microscope (LM) and scanning electron microscopy (SEM) in order to determine the importance of seed features as taxonomic evidence. These species are Cadaba farinosa Forssk, Capparis decidua (Forssk). Edgew, Capparis cartilaginea Decne, Dipterygium glaucum Decne, Maerua crassifolia Forssk and Maerua oblongifolia (Forssk.) A. Rich. The diagnostic characters at level of the general and specific level are shape of seed, size, color, texture and seed coat surface. There is a wide range of variations of seed shape among the studied species. LM revealed that the studied seeds are mostly varying from ovate to globose or cardiac- shape. All of the seeds lack wings except Dipterygium glaucum Decne. and most of the seed is coarse texture. There are six main types of seed surface sculptures revealed by SEM investigation at higher magnifications; reticulate, rugose-striate, winding undulate, ribbed and papillate.

The Microstructure and Hardness of Al2O3 Particle Reinforced Composite

2012 ◽  
Vol 232 ◽  
pp. 39-44
Author(s):  
Y. Şahin ◽  
K. Emre Öksüz
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Aluminium Alloys ◽  
Particle Sizes ◽  
Alloy Composite ◽  
Alloy Matrix ◽  
Reinforced Composite ◽  
Particle Reinforced Composite ◽  
Sem Investigation ◽  
Scanning Electron

Aluminium alloys (Al2014 and Al2124 alloy) and their composites containing 10wt.% Al2O3 with 3 µm and 43 µm sizes of particles have been produced by powder metallurgy (PM) method and the microstructure and hardness were investigated. Scanning electron microscopy (SEM) investigation showed a nearly uniform distribution of the Al2O3 particles within the Al2124 alloy matrix although some porosities were found in the Al2014 alloy matrix. Furthermore, it was found that the macrohardness of Al2124 alloy composite improved highly in comparison to that of Al2014 alloy due to fine of microstructure and increased hardness. The hardnesses of both MMCs increased with increasing the particle sizes.

Biliary stent occlusion : a microbiological and scanning electron microscopy (SEM) investigation

1999 ◽  
pp. 69-80 ◽  
Author(s):  
Antonio Basoli ◽  
Fausto Fiocca ◽  
Roberta Di Rosa ◽  
Lucilla Baldassarri ◽  
Gianfranco Donelli
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Biliary Stent ◽  
Stent Occlusion ◽  
Sem Investigation ◽  
Scanning Electron

Pathogenesis of Human Hair Defects

1974 ◽  
Vol 32 ◽  
pp. 12-13
Author(s):  
P.S. Porter ◽  
T. Aoyagi ◽  
R. Matta
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Human Hair ◽  
Standard Techniques ◽  
Scanning Electron

Using standard techniques of scanning electron microscopy (SEM), over 1000 human hair defects have been studied. In several of the defects, the pathogenesis of the abnormality has been clarified using these techniques. It is the purpose of this paper to present several distinct morphologic abnormalities of hair and to discuss their pathogenesis as elucidated through techniques of scanning electron microscopy.

Ultrastructural Analysis of the Salivary Glands of Gromphadorhina Portentosa (Schaum)

1977 ◽  
Vol 35 ◽  
pp. 638-639
Author(s):  
P.J. Dailey
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Salivary Glands ◽  
Secretory Vesicles ◽  
The Past ◽  
Transmission Electron ◽  
Means Of Transmission ◽  
Gromphadorhina Portentosa ◽  
Scanning Electron ◽  
Topographical Relief

The structure of insect salivary glands has been extensively investigated during the past decade; however, none have attempted scanning electron microscopy (SEM) in ultrastructural examinations of these secretory organs. This study correlates fine structure by means of SEM cryofractography with that of thin-sectioned epoxy embedded material observed by means of transmission electron microscopy (TEM).Salivary glands of Gromphadorhina portentosa were excised and immediately submerged in cold (4°C) paraformaldehyde-glutaraldehyde fixative1 for 2 hr, washed and post-fixed in 1 per cent 0s04 in phosphosphate buffer (4°C for 2 hr). After ethanolic dehydration half of the samples were embedded in Epon 812 for TEM and half cryofractured and subsequently critical point dried for SEM. Dried specimens were mounted on aluminum stubs and coated with approximately 150 Å of gold in a cold sputtering apparatus.Figure 1 shows a cryofractured plane through a salivary acinus revealing topographical relief of secretory vesicles.

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