Gamma Spectroscopic Analysis and Associated Radiation Hazards Parameters of Cement Used in Saudi Arabia

2016 ◽  
Vol 9 (2) ◽  
pp. 238-245 ◽  
Author(s):  
S. Alashrah ◽  
A. El- Taher
Keyword(s):  
Saudi Arabia ◽  
Spectroscopic Analysis ◽  
Radiation Hazards

Radiation hazards in selected areas in the Adham Governorate, southwest of Saudi Arabia

2021 ◽  
Vol 14 (23) ◽  
Author(s):  
Helmy S. O. Abuelnaga ◽  
Essam Aboud ◽  
Faisal A. Alqahtani ◽  
Murad Abdulfarraj ◽  
Sultan Almalki ◽  
...  
Keyword(s):  
Saudi Arabia ◽  
Radiation Hazards

Evaluation of Radiation Hazards Due to Mining Activities in Al Jalamid Mining Area, North Province, Saudi Arabia

2019 ◽  
Vol 44 (10) ◽  
pp. 8799-8804
Author(s):  
El-Said Ibrahim Shabana ◽  
Essam Mohammed Banoqitah ◽  
Maher Mohammad Taher Qutub ◽  
Mohammad Sami Tayeb ◽  
Abdulraheem Abdulrahman Kinsara
Keyword(s):  
Saudi Arabia ◽  
Mining Area ◽  
Mining Activities ◽  
Radiation Hazards ◽  
Area North

Characterization of Chemical Impurities in Glutaraldehyde

1975 ◽  
Vol 33 ◽  
pp. 620-621
Author(s):  
B. J. Grenon ◽  
A. J. Tousimis
Keyword(s):  
Glutaric Acid ◽  
Spectroscopic Analysis ◽  
Aldol Condensation ◽  
Condensation Product ◽  
Amorphous Solid ◽  
Water Soluble ◽  
Impurity Component ◽  
Chemical Impurities ◽  
Soluble Liquid

Ever since the introduction of glutaraldehyde as a fixative in electron microscopy of biological specimens, the identification of impurities and consequently their effects on biologic ultrastructure have been under investigation. Several reports postulate that the impurities of glutaraldehyde, used as a fixative, are glutaric acid, glutaraldehyde polymer, acrolein and glutaraldoxime.Analysis of commercially available biological or technical grade glutaraldehyde revealed two major impurity components, none of which has been reported. The first compound is a colorless, water-soluble liquid with a boiling point of 42°C at 16 mm. Utilizing Nuclear Magnetic Resonance (NMR) spectroscopic analysis, this compound has been identified to be — dihydro-2-ethoxy 2H-pyran. This impurity component of the glutaraldehyde biological or technical grades has an UV absorption peak at 235nm. The second compound is a white amorphous solid which is insoluble in water and has a melting point of 80-82°C. Initial chemical analysis indicates that this compound is an aldol condensation product(s) of glutaraldehyde.

Elemental analysis of human erythrocytes

1989 ◽  
Vol 47 ◽  
pp. 242-243
Author(s):  
S. A. Livesey ◽  
A. A. del Campo ◽  
E. S. Griffey ◽  
D. Ohlmer ◽  
T. Schifani ◽  
...  
Keyword(s):  
Sample Preparation ◽  
Elemental Analysis ◽  
Human Erythrocyte ◽  
Spectroscopic Analysis ◽  
Model System ◽  
Human Erythrocytes ◽  
List Type ◽  
Chemical Fixation ◽  
Ethanol Dehydration ◽  
Lowicryl K4m

The aim of this study is to compare methods of sample preparation for elemental analysis. The model system which is used is the human erythrocyte. Energy dispersive spectroscopic analysis has been previously reported for cryofixed and cryosectioned erythrocytes. Such work represents the reference point for this study. The use of plastic embedded samples for elemental analysis has also been documented. The work which is presented here is based on human erythrocytes which have been either chemically fixed and embedded or cryofixed and subsequently processed by a variety of techniques which culminated in plastic embedded samples.Heparinized and washed erythrocytes were prepared by the following methods for this study :(1). Chemical fixation in 4% paraformaldehyde/0.25% glutaraldehyde/0.2 M sucrose in 0.1 M Na cacodylate, pH 7.3 for 30 min, followed by ethanol dehydration, infiltration and embedding in Lowicryl K4M at -20° C.

Confidence toward vaccination as reported by parents of children admitted to a tertiary care hospital in Riyadh, Saudi Arabia: A cross sectional study

Vacunas ◽  
2020 ◽  
Vol 21 (2) ◽  
pp. 95-104 ◽  
Author(s):  
Y.M. AlGoraini ◽  
N.N. AlDujayn ◽  
M.A. AlRasheed ◽  
Y.E. Bashawri ◽  
S.S. Alsubaie ◽  
...  
Keyword(s):  
Saudi Arabia ◽  
Tertiary Care Hospital ◽  
Tertiary Care ◽  
Cross Sectional Study ◽  
Care Hospital ◽  
Sectional Study ◽  
Cross Sectional

Abstract #955: Sheehan Syndrome in a Jizan Region of Saudi Arabia.

2016 ◽  
Vol 22 ◽  
pp. 224
Author(s):  
Subodh Banzal ◽  
Sonal Banzal ◽  
Sadhana Banzal ◽  
Ayobenji Ayoola
Keyword(s):  
Saudi Arabia ◽  
Sheehan Syndrome
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