Scanning electron microscope studies of the egg shell in some anostraca (Crustacea: Branchiopoda)

1978 ◽  
Vol 193 (2) ◽  
Author(s):  
BarbaraM. Gilchrist
Keyword(s):  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Egg Shell ◽  
Scanning Electron

Hydroxyapatite/ Chitosan Biocomposite for Remazol Blue Dyes Removal

2014 ◽  
Vol 695 ◽  
pp. 106-109 ◽  
Author(s):  
Sofiah Hamzah ◽  
M.F.M. Salleh
Keyword(s):  
Wastewater Treatment ◽  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Mechanical Strength ◽  
Adsorption Capacity ◽  
Textile Industry ◽  
Fundamental Knowledge ◽  
Egg Shell ◽  
Scanning Electron ◽  
Dyes Removal

This study aimed to synthesis and characterized hydroxyapatite/ chitosan biocomposite for Remazol Blue Dyes Removal. Hydroxyapatite was extracted from egg shell and incooporated with commercial chitosan to improve its mechanical strength and adsorption capacity. The prepared adsorbent was characterized in term of morphology using scanning electron microscope and the presence of funtional group in this biocomposite were confirmed by ATR-FTIR. Performance of hydroxyapatite/ chitosan was evaluted by its efficiency for remazol blue dyes removal. The observed results show that the developed adsorbent achieved the highest adsorption capacity for about 95 % dyes removal. The findings in this study perhaps can be used as a fundamental knowledge for the development of dyes wastewater treatment mainly in textile industry.

scholarly journals Egg quality and age of laying hens: implications for product safety

2013 ◽  
Vol 53 (12) ◽  
pp. 1291 ◽  
Author(s):  
J. R. Roberts ◽  
Kapil Chousalkar ◽  
Samiullah
Keyword(s):  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Laying Hens ◽  
Egg Quality ◽  
Age Groups ◽  
Product Safety ◽  
Shell Quality ◽  
Low Correlation ◽  
Egg Shell ◽  
Scanning Electron

Eggs were collected from commercial caged layer flocks in early, mid, late and very late lay. Eggs were candled and scored for translucency. Cuticle cover was estimated using MST Cuticle Stain and a Konica Minolta hand-held spectrophotometer. Traditional measures of egg quality were determined using specialised equipment. Shell ultrastructural features were scored following plasma ashing of shell samples and viewing under a benchtop scanning electron microscope. Translucency score was significantly higher in late lay than for all other age groups. Shell quality declined with increasing flock age. However, the extent of cuticle cover on the egg shell was not significantly different among flock age groups. The incidence of shell ultrastructural features associated with good quality shells was lower for older flocks and incidence of ultrastructural features associated with poorer quality shells was higher for older flocks. Translucency score had a low correlation with the ultrastructural features of the mammillary layer.

Small spines on the egg shells of Schistosoma

Parasitology ◽  
1968 ◽  
Vol 58 (2) ◽  
pp. 367-370 ◽  
Author(s):  
David J. Hockley
Keyword(s):  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Schistosoma Mansoni ◽  
Main Part ◽  
Maximum Size ◽  
Extracellular Material ◽  
Cell Debris ◽  
Egg Shells ◽  
Egg Shell ◽  
Scanning Electron

Small spines of maximum size 0.28 μm × 0.5 μm have been found all over the shells of the eggs of Schistosoma mansoni and S. haematobium. The small spines on S. haematobium eggs are less pointed than those on S. mansoni eggs. They consist of inner and outer parts made up of subunits, and they are continuous with the main part of the shell underneath. S. mansoni eggs still within the blood vessels of the gut have extracellular material between the spines and there is cell debris over them. The scanning electron microscope shows the increased surface area of the egg shell due to the small spines.I wish to thank many people for their help with this work and in particular Dr F. Hawking, Dr S. R. Smithers and Mrs. L. Ebden.

The Alteration of the Pore Spaces in Sandstones

1973 ◽  
Vol 31 ◽  
pp. 210-211
Author(s):  
R. E. Ferrell ◽  
G. G. Paulson
Keyword(s):  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
The Other ◽  
Coarse Grained ◽  
Depositional Fabric ◽  
Soluble Components ◽  
Scanning Electron ◽  
Shape And Size

The pore spaces in sandstones are the result of the original depositional fabric and the degree of post-depositional alteration that the rock has experienced. The largest pore volumes are present in coarse-grained, well-sorted materials with high sphericity. The chief mechanisms which alter the shape and size of the pores are precipitation of cementing agents and the dissolution of soluble components. Each process may operate alone or in combination with the other, or there may be several generations of cementation and solution.The scanning electron microscope has ‘been used in this study to reveal the morphology of the pore spaces in a variety of moderate porosity, orthoquartzites.

The Broad Applications of the Scanning Electron Microscope

1969 ◽  
Vol 27 ◽  
pp. 20-21
Author(s):  
C. T. Nightingale ◽  
S. E. Summers ◽  
T. P. Turnbull
Keyword(s):  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Light Microscopy ◽  
Surface Topography ◽  
Great Depth ◽  
Resolving Power ◽  
Depth Of Field ◽  
Pictorial Representations ◽  
Scanning Electron

The ease of operation of the scanning electron microscope has insured its wide application in medicine and industry. The micrographs are pictorial representations of surface topography obtained directly from the specimen. The need to replicate is eliminated. The great depth of field and the high resolving power provide far more information than light microscopy.

Observability of Very Thick Specimen by Using Transmission Scanning Electron Microscope

1971 ◽  
Vol 29 ◽  
pp. 26-27
Author(s):  
K. Shibatomi ◽  
T. Yamanoto ◽  
H. Koike
Keyword(s):  
Electron Microscope ◽  
Image Quality ◽  
Scanning Electron Microscope ◽  
Chromatic Aberration ◽  
Image Contrast ◽  
Objective Lens ◽  
Thick Specimen ◽  
Transmission Electron ◽  
Scanning Electron

In the observation of a thick specimen by means of a transmission electron microscope, the intensity of electrons passing through the objective lens aperture is greatly reduced. So that the image is almost invisible. In addition to this fact, it have been reported that a chromatic aberration causes the deterioration of the image contrast rather than that of the resolution. The scanning electron microscope is, however, capable of electrically amplifying the signal of the decreasing intensity, and also free from a chromatic aberration so that the deterioration of the image contrast due to the aberration can be prevented. The electrical improvement of the image quality can be carried out by using the fascionating features of the SEM, that is, the amplification of a weak in-put signal forming the image and the descriminating action of the heigh level signal of the background. This paper reports some of the experimental results about the thickness dependence of the observability and quality of the image in the case of the transmission SEM.

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